Documentation/ABI/testing/debugfs-aufs | 55 +
Documentation/ABI/testing/sysfs-aufs | 31 +
Documentation/devicetree/bindings/power/pwrseq/pwrseq-generic.txt | 48 +
Documentation/devicetree/bindings/usb/usb-device.txt | 9 +-
Documentation/driver-api/pwm.rst | 6 +-
Documentation/filesystems/aufs/README | 399 +
Documentation/filesystems/aufs/design/01intro.txt | 171 +
Documentation/filesystems/aufs/design/02struct.txt | 258 +
Documentation/filesystems/aufs/design/03atomic_open.txt | 85 +
Documentation/filesystems/aufs/design/03lookup.txt | 113 +
Documentation/filesystems/aufs/design/04branch.txt | 74 +
Documentation/filesystems/aufs/design/05wbr_policy.txt | 64 +
Documentation/filesystems/aufs/design/06dirren.dot | 31 +
Documentation/filesystems/aufs/design/06dirren.txt | 102 +
Documentation/filesystems/aufs/design/06fhsm.txt | 120 +
Documentation/filesystems/aufs/design/06mmap.txt | 72 +
Documentation/filesystems/aufs/design/06xattr.txt | 96 +
Documentation/filesystems/aufs/design/07export.txt | 58 +
Documentation/filesystems/aufs/design/08shwh.txt | 52 +
Documentation/filesystems/aufs/design/10dynop.txt | 47 +
Documentation/power/power-sequence/design.rst | 54 +
Documentation/tp_smapi.txt | 275 +
MAINTAINERS | 27 +
Makefile | 8 +-
arch/arm/boot/Makefile | 4 +
arch/arm/boot/compressed/atags_to_fdt.c | 8 +-
arch/arm/boot/dts/Makefile | 14 +
arch/arm/boot/dts/am335x-abbbi.dts | 164 +
arch/arm/boot/dts/am335x-bone-common-no-capemgr.dtsi | 373 +
arch/arm/boot/dts/am335x-bone-common-univ.dtsi | 2920 +++++
arch/arm/boot/dts/am335x-bone-common.dtsi | 14 +-
arch/arm/boot/dts/am335x-bone-jtag.dtsi | 15 +
arch/arm/boot/dts/am335x-bone-uboot-univ.dts | 29 +
arch/arm/boot/dts/am335x-bone.dts | 6 +
arch/arm/boot/dts/am335x-boneblack-common.dtsi | 10 +-
arch/arm/boot/dts/am335x-boneblack-uboot-univ.dts | 40 +
arch/arm/boot/dts/am335x-boneblack-uboot.dts | 41 +
arch/arm/boot/dts/am335x-boneblack-wireless.dts | 6 +
arch/arm/boot/dts/am335x-boneblack.dts | 6 +
arch/arm/boot/dts/am335x-boneblue.dts | 491 +-
arch/arm/boot/dts/am335x-bonegreen-wireless-common-univ.dtsi | 2794 +++++
arch/arm/boot/dts/am335x-bonegreen-wireless-uboot-univ.dts | 55 +
arch/arm/boot/dts/am335x-bonegreen-wireless.dts | 6 +
arch/arm/boot/dts/am335x-bonegreen.dts | 6 +
arch/arm/boot/dts/am335x-osd3358-sm-red.dts | 25 +-
arch/arm/boot/dts/am335x-pocketbeagle.dts | 2042 +++-
arch/arm/boot/dts/am335x-sancloud-bbe.dts | 5 +
arch/arm/boot/dts/am33xx-l4.dtsi | 162 +
arch/arm/boot/dts/am33xx.dtsi | 2 +-
arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi | 4 +
arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts | 5 +
arch/arm/boot/dts/am57xx-beagle-x15-revc.dts | 5 +
arch/arm/boot/dts/am57xx-beagle-x15.dts | 5 +
arch/arm/boot/dts/armada-370-smileplug.dts | 173 +
arch/arm/boot/dts/dove-d3plug.dts | 7 +
arch/arm/boot/dts/dra7.dtsi | 10 +
arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 2 +-
arch/arm/boot/dts/imx6q-evi.dts | 25 +-
arch/arm/boot/dts/imx6qdl-udoo.dtsi | 46 +-
arch/arm/boot/dts/imx6qdl-wandboard-revb1.dtsi | 19 +-
arch/arm/boot/dts/imx6qdl-wandboard-revc1.dtsi | 18 +
arch/arm/boot/dts/imx6qdl-wandboard-revd1.dtsi | 20 +
arch/arm/boot/dts/imx6qdl.dtsi | 6 +
arch/arm/boot/dts/imx6ul-usbarmory.dts | 255 +
arch/arm/boot/dts/imx6ull-usbarmory.dts | 256 +
arch/arm/boot/dts/imx7d-pico-pi.dts | 4 +
arch/arm/boot/dts/omap3-beagle-xm.dts | 53 +-
arch/arm/boot/dts/omap3-beagle.dts | 11 +
arch/arm/boot/dts/omap4-panda-a4.dts | 12 +
arch/arm/boot/dts/omap4-panda-common.dtsi | 10 -
arch/arm/boot/dts/omap4-panda-es-b3.dts | 85 +
arch/arm/boot/dts/omap4-panda-es.dts | 12 +
arch/arm/boot/dts/omap4-panda.dts | 12 +
arch/arm/boot/dts/omap4-sdp.dts | 2 +
arch/arm/boot/dts/omap4.dtsi | 2 +
arch/arm/boot/dts/sun7i-a20-cubietruck.dts | 2 +
arch/arm/boot/dts/twl6030.dtsi | 5 +
arch/arm/include/uapi/asm/setup.h | 17 +
arch/arm/mach-imx/devices/Kconfig | 6 +
arch/arm/mach-imx/devices/Makefile | 1 +
arch/arm/mach-imx/devices/wand-rfkill.c | 290 +
arch/x86/Kconfig.cpu | 249 +-
arch/x86/Makefile | 39 +-
arch/x86/Makefile_32.cpu | 26 +-
arch/x86/include/asm/module.h | 44 +
arch/x86/kernel/amd_nb.c | 3 +
block/Kconfig | 1 -
block/bfq-iosched.c | 35 +-
block/elevator.c | 8 +
drivers/block/loop.c | 18 +
drivers/block/zram/Kconfig | 3 +-
drivers/block/zram/zram_drv.c | 4 +
drivers/cpufreq/cpufreq_ondemand.c | 4 +
drivers/gpio/Kconfig | 14 +
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-of-helper.c | 435 +
drivers/gpio/gpiolib-sysfs.c | 35 +-
drivers/gpio/gpiolib.c | 8 +-
drivers/hwmon/k10temp.c | 1 +
drivers/infiniband/core/addr.c | 1 +
drivers/input/misc/tps65218-pwrbutton.c | 2 +-
drivers/input/mouse/synaptics.c | 4 +-
drivers/input/mouse/synaptics.h | 1 +
drivers/input/touchscreen/ar1021_i2c.c | 85 +-
drivers/input/touchscreen/atmel_mxt_ts.c | 2 +-
drivers/input/touchscreen/ti_am335x_tsc.c | 11 +-
drivers/macintosh/Kconfig | 7 +
drivers/macintosh/adbhid.c | 83 +-
drivers/misc/Kconfig | 8 +
drivers/misc/Makefile | 2 +
drivers/misc/cape/Kconfig | 5 +
drivers/misc/cape/Makefile | 5 +
drivers/misc/cape/beaglebone/Kconfig | 10 +
drivers/misc/cape/beaglebone/Makefile | 5 +
drivers/misc/cape/beaglebone/bone-pinmux-helper.c | 242 +
drivers/misc/udoo_ard.c | 417 +
drivers/mmc/host/mvsdio.c | 4 +-
drivers/net/ethernet/ti/davinci_mdio.c | 97 +
drivers/net/usb/smsc95xx.c | 56 +
drivers/platform/x86/Kconfig | 19 +
drivers/platform/x86/Makefile | 2 +
drivers/platform/x86/hdaps.c | 945 +-
drivers/platform/x86/thinkpad_ec.c | 513 +
drivers/platform/x86/tp_smapi.c | 1493 +++
drivers/power/Kconfig | 1 +
drivers/power/Makefile | 1 +
drivers/power/pwrseq/Kconfig | 20 +
drivers/power/pwrseq/Makefile | 2 +
drivers/power/pwrseq/core.c | 335 +
drivers/power/pwrseq/pwrseq_generic.c | 234 +
drivers/pwm/sysfs.c | 15 +-
drivers/regulator/twl6030-regulator.c | 23 +
drivers/scsi/Kconfig | 2 +
drivers/scsi/Makefile | 1 +
drivers/scsi/vhba/Kconfig | 9 +
drivers/scsi/vhba/Makefile | 4 +
drivers/scsi/vhba/vhba.c | 1073 ++
drivers/spi/spidev.c | 6 +-
drivers/staging/Kconfig | 2 +
drivers/staging/Makefile | 1 +
drivers/staging/exfat/Kconfig | 39 +
drivers/staging/exfat/Makefile | 10 +
drivers/staging/exfat/TODO | 12 +
drivers/staging/exfat/exfat.h | 973 ++
drivers/staging/exfat/exfat_blkdev.c | 136 +
drivers/staging/exfat/exfat_cache.c | 722 ++
drivers/staging/exfat/exfat_core.c | 3704 +++++++
drivers/staging/exfat/exfat_nls.c | 404 +
drivers/staging/exfat/exfat_super.c | 4137 +++++++
drivers/staging/exfat/exfat_upcase.c | 740 ++
drivers/staging/fbtft/fb_ssd1306.c | 68 +-
drivers/staging/fbtft/fbtft_device.c | 19 +
drivers/tty/Kconfig | 13 +
drivers/tty/serial/8250/8250_omap.c | 6 +-
drivers/usb/Kconfig | 1 +
drivers/usb/core/hub.c | 49 +-
drivers/usb/core/hub.h | 1 +
drivers/usb/gadget/function/u_serial.c | 5 +
drivers/video/logo/Kconfig | 83 +-
drivers/video/logo/Makefile | 12 +
drivers/video/logo/logo.c | 48 +
drivers/video/logo/logo_arch_clut224.ppm | 43204 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
drivers/video/logo/logo_bsd_clut224.ppm | 2403 +++++
drivers/video/logo/logo_debian_clut224.ppm | 883 ++
drivers/video/logo/logo_exherbo_clut224.ppm | 963 ++
drivers/video/logo/logo_fbsd_clut224.ppm | 2403 +++++
drivers/video/logo/logo_fedoraglossy_clut224.ppm | 1123 ++
drivers/video/logo/logo_fedorasimple_clut224.ppm | 1123 ++
drivers/video/logo/logo_gentoo_clut224.ppm | 803 ++
drivers/video/logo/logo_linux_clut224.ppm | 16006 +++++++++++++++++++++++++---
drivers/video/logo/logo_linux_mono.pbm | 273 +-
drivers/video/logo/logo_linux_vga16.ppm | 16006 +++++++++++++++++++++++++---
drivers/video/logo/logo_oldzen_clut224.ppm | 882 ++
drivers/video/logo/logo_pck_clut224.ppm | 2043 ++++
drivers/video/logo/logo_slackware_clut224.ppm | 1123 ++
drivers/video/logo/logo_tits_clut224.ppm | 1443 +++
fs/Kconfig | 1 +
fs/Makefile | 1 +
fs/aufs/Kconfig | 199 +
fs/aufs/Makefile | 46 +
fs/aufs/aufs.h | 62 +
fs/aufs/branch.c | 1428 +++
fs/aufs/branch.h | 366 +
fs/aufs/conf.mk | 40 +
fs/aufs/cpup.c | 1458 +++
fs/aufs/cpup.h | 100 +
fs/aufs/dbgaufs.c | 526 +
fs/aufs/dbgaufs.h | 53 +
fs/aufs/dcsub.c | 225 +
fs/aufs/dcsub.h | 137 +
fs/aufs/debug.c | 441 +
fs/aufs/debug.h | 226 +
fs/aufs/dentry.c | 1154 ++
fs/aufs/dentry.h | 268 +
fs/aufs/dinfo.c | 554 +
fs/aufs/dir.c | 763 ++
fs/aufs/dir.h | 134 +
fs/aufs/dirren.c | 1316 +++
fs/aufs/dirren.h | 140 +
fs/aufs/dynop.c | 367 +
fs/aufs/dynop.h | 77 +
fs/aufs/export.c | 838 ++
fs/aufs/f_op.c | 819 ++
fs/aufs/fhsm.c | 427 +
fs/aufs/file.c | 863 ++
fs/aufs/file.h | 342 +
fs/aufs/finfo.c | 149 +
fs/aufs/fstype.h | 401 +
fs/aufs/hbl.h | 65 +
fs/aufs/hfsnotify.c | 288 +
fs/aufs/hfsplus.c | 60 +
fs/aufs/hnotify.c | 721 ++
fs/aufs/i_op.c | 1505 +++
fs/aufs/i_op_add.c | 936 ++
fs/aufs/i_op_del.c | 513 +
fs/aufs/i_op_ren.c | 1250 +++
fs/aufs/iinfo.c | 286 +
fs/aufs/inode.c | 529 +
fs/aufs/inode.h | 698 ++
fs/aufs/ioctl.c | 220 +
fs/aufs/lcnt.h | 186 +
fs/aufs/loop.c | 148 +
fs/aufs/loop.h | 55 +
fs/aufs/magic.mk | 31 +
fs/aufs/module.c | 273 +
fs/aufs/module.h | 166 +
fs/aufs/mvdown.c | 706 ++
fs/aufs/opts.c | 1880 ++++
fs/aufs/opts.h | 225 +
fs/aufs/plink.c | 516 +
fs/aufs/poll.c | 51 +
fs/aufs/posix_acl.c | 103 +
fs/aufs/procfs.c | 171 +
fs/aufs/rdu.c | 384 +
fs/aufs/rwsem.h | 73 +
fs/aufs/sbinfo.c | 314 +
fs/aufs/super.c | 1047 ++
fs/aufs/super.h | 589 +
fs/aufs/sysaufs.c | 93 +
fs/aufs/sysaufs.h | 102 +
fs/aufs/sysfs.c | 374 +
fs/aufs/sysrq.c | 160 +
fs/aufs/vdir.c | 896 ++
fs/aufs/vfsub.c | 902 ++
fs/aufs/vfsub.h | 354 +
fs/aufs/wbr_policy.c | 830 ++
fs/aufs/whout.c | 1062 ++
fs/aufs/whout.h | 86 +
fs/aufs/wkq.c | 392 +
fs/aufs/wkq.h | 89 +
fs/aufs/xattr.c | 356 +
fs/aufs/xino.c | 1965 ++++
fs/dcache.c | 4 +-
fs/exec.c | 7 +-
fs/fcntl.c | 5 +-
fs/file_table.c | 3 +
fs/inode.c | 3 +-
fs/namespace.c | 9 +
fs/notify/group.c | 3 +
fs/notify/mark.c | 4 +
fs/open.c | 5 +
fs/proc/base.c | 2 +-
fs/proc/nommu.c | 5 +-
fs/proc/task_mmu.c | 7 +-
fs/proc/task_nommu.c | 5 +-
fs/read_write.c | 26 +
fs/splice.c | 12 +-
fs/sync.c | 3 +-
fs/xattr.c | 1 +
include/dt-bindings/board/am335x-bbw-bbb-base.h | 103 +
include/linux/blkdev.h | 4 +
include/linux/fs.h | 10 +
include/linux/linux_logo.h | 12 +
include/linux/lockdep.h | 3 +
include/linux/mm.h | 22 +
include/linux/mm_types.h | 2 +
include/linux/mnt_namespace.h | 3 +
include/linux/pci_ids.h | 1 +
include/linux/power/pwrseq.h | 81 +
include/linux/splice.h | 6 +
include/linux/thinkpad_ec.h | 47 +
include/trace/events/fs.h | 53 +
include/uapi/linux/Kbuild | 1 +
include/uapi/linux/aufs_type.h | 452 +
include/uapi/linux/can/isotp.h | 135 +
include/uapi/linux/futex.h | 7 +
include/uapi/linux/vt.h | 15 +-
init/Kconfig | 56 +
kernel/fork.c | 17 +-
kernel/futex.c | 214 +-
kernel/locking/lockdep.c | 4 +-
kernel/sched/fair.c | 25 +
kernel/sysctl.c | 12 +
kernel/task_work.c | 1 +
kernel/user_namespace.c | 7 +
mm/Kconfig | 4 +-
mm/Makefile | 2 +-
mm/filemap.c | 2 +-
mm/huge_memory.c | 4 +
mm/mmap.c | 33 +-
mm/nommu.c | 10 +-
mm/page-writeback.c | 8 +
mm/prfile.c | 86 +
mm/zswap.c | 12 +
net/can/Kconfig | 10 +
net/can/Makefile | 3 +
net/can/isotp.c | 1533 +++
net/ipv4/Kconfig | 4 +
samples/seccomp/Makefile | 2 +
scripts/mkcompile_h | 4 +-
security/device_cgroup.c | 1 +
security/security.c | 8 +
312 files changed, 156029 insertions(+), 4077 deletions(-)
diff --git a/Documentation/ABI/testing/debugfs-aufs b/Documentation/ABI/testing/debugfs-aufs
new file mode 100644
index 0000000000..4a6694194b
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-aufs
@@ -0,0 +1,55 @@
+What: /debug/aufs/si_<id>/
+Date: March 2009
+Contact: J. R. Okajima <hooanon05g@gmail.com>
+Description:
+ Under /debug/aufs, a directory named si_<id> is created
+ per aufs mount, where <id> is a unique id generated
+ internally.
+
+What: /debug/aufs/si_<id>/plink
+Date: Apr 2013
+Contact: J. R. Okajima <hooanon05g@gmail.com>
+Description:
+ It has three lines and shows the information about the
+ pseudo-link. The first line is a single number
+ representing a number of buckets. The second line is a
+ number of pseudo-links per buckets (separated by a
+ blank). The last line is a single number representing a
+ total number of psedo-links.
+ When the aufs mount option 'noplink' is specified, it
+ will show "1\n0\n0\n".
+
+What: /debug/aufs/si_<id>/xib
+Date: March 2009
+Contact: J. R. Okajima <hooanon05g@gmail.com>
+Description:
+ It shows the consumed blocks by xib (External Inode Number
+ Bitmap), its block size and file size.
+ When the aufs mount option 'noxino' is specified, it
+ will be empty. About XINO files, see the aufs manual.
+
+What: /debug/aufs/si_<id>/xi0, xi1 ... xiN and xiN-N
+Date: March 2009
+Contact: J. R. Okajima <hooanon05g@gmail.com>
+Description:
+ It shows the consumed blocks by xino (External Inode Number
+ Translation Table), its link count, block size and file
+ size.
+ Due to the file size limit, there may exist multiple
+ xino files per branch. In this case, "-N" is added to
+ the filename and it corresponds to the index of the
+ internal xino array. "-0" is omitted.
+ When the aufs mount option 'noxino' is specified, Those
+ entries won't exist. About XINO files, see the aufs
+ manual.
+
+What: /debug/aufs/si_<id>/xigen
+Date: March 2009
+Contact: J. R. Okajima <hooanon05g@gmail.com>
+Description:
+ It shows the consumed blocks by xigen (External Inode
+ Generation Table), its block size and file size.
+ If CONFIG_AUFS_EXPORT is disabled, this entry will not
+ be created.
+ When the aufs mount option 'noxino' is specified, it
+ will be empty. About XINO files, see the aufs manual.
diff --git a/Documentation/ABI/testing/sysfs-aufs b/Documentation/ABI/testing/sysfs-aufs
new file mode 100644
index 0000000000..82f9518495
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-aufs
@@ -0,0 +1,31 @@
+What: /sys/fs/aufs/si_<id>/
+Date: March 2009
+Contact: J. R. Okajima <hooanon05g@gmail.com>
+Description:
+ Under /sys/fs/aufs, a directory named si_<id> is created
+ per aufs mount, where <id> is a unique id generated
+ internally.
+
+What: /sys/fs/aufs/si_<id>/br0, br1 ... brN
+Date: March 2009
+Contact: J. R. Okajima <hooanon05g@gmail.com>
+Description:
+ It shows the abolute path of a member directory (which
+ is called branch) in aufs, and its permission.
+
+What: /sys/fs/aufs/si_<id>/brid0, brid1 ... bridN
+Date: July 2013
+Contact: J. R. Okajima <hooanon05g@gmail.com>
+Description:
+ It shows the id of a member directory (which is called
+ branch) in aufs.
+
+What: /sys/fs/aufs/si_<id>/xi_path
+Date: March 2009
+Contact: J. R. Okajima <hooanon05g@gmail.com>
+Description:
+ It shows the abolute path of XINO (External Inode Number
+ Bitmap, Translation Table and Generation Table) file
+ even if it is the default path.
+ When the aufs mount option 'noxino' is specified, it
+ will be empty. About XINO files, see the aufs manual.
diff --git a/Documentation/devicetree/bindings/power/pwrseq/pwrseq-generic.txt b/Documentation/devicetree/bindings/power/pwrseq/pwrseq-generic.txt
new file mode 100644
index 0000000000..ebf0d477b6
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/pwrseq/pwrseq-generic.txt
@@ -0,0 +1,48 @@
+The generic power sequence library
+
+Some hard-wired devices (eg USB/MMC) need to do power sequence before
+the device can be enumerated on the bus, the typical power sequence
+like: enable USB PHY clock, toggle reset pin, etc. But current
+Linux device driver lacks of such code to do it, it may cause some
+hard-wired devices works abnormal or can't be recognized by
+controller at all. The power sequence will be done before this device
+can be found at the bus.
+
+The power sequence properties is under the device node.
+
+Optional properties:
+- clocks: the input clocks for device.
+- reset-gpios: Should specify the GPIO for reset.
+- reset-duration-us: the duration in microsecond for assert reset signal.
+
+Below is the example of USB power sequence properties on USB device
+nodes which have two level USB hubs.
+
+&usbotg1 {
+ vbus-supply = <®_usb_otg1_vbus>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usb_otg1_id>;
+ status = "okay";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ genesys: hub@1 {
+ compatible = "usb5e3,608";
+ reg = <1>;
+
+ clocks = <&clks IMX6SX_CLK_CKO>;
+ reset-gpios = <&gpio4 5 GPIO_ACTIVE_LOW>; /* hub reset pin */
+ reset-duration-us = <10>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ asix: ethernet@1 {
+ compatible = "usbb95,1708";
+ reg = <1>;
+
+ clocks = <&clks IMX6SX_CLK_IPG>;
+ reset-gpios = <&gpio4 6 GPIO_ACTIVE_LOW>; /* ethernet_rst */
+ reset-duration-us = <15>;
+ };
+ };
+};
diff --git a/Documentation/devicetree/bindings/usb/usb-device.txt b/Documentation/devicetree/bindings/usb/usb-device.txt
index 036be172b1..cb85f82a12 100644
--- a/Documentation/devicetree/bindings/usb/usb-device.txt
+++ b/Documentation/devicetree/bindings/usb/usb-device.txt
@@ -65,6 +65,9 @@ Required properties for host-controller nodes with device nodes:
- #address-cells: shall be 1
- #size-cells: shall be 0
+Optional properties:
+power sequence properties, see
+Documentation/devicetree/bindings/power/pwrseq/pwrseq-generic.txt for detail
Example:
@@ -72,9 +75,13 @@ Example:
#address-cells = <1>;
#size-cells = <0>;
- hub@1 { /* hub connected to port 1 */
+ genesys: hub@1 { /* hub connected to port 1 */
compatible = "usb5e3,608";
reg = <1>;
+
+ clocks = <&clks IMX6SX_CLK_CKO>;
+ reset-gpios = <&gpio4 5 GPIO_ACTIVE_LOW>; /* hub reset pin */
+ reset-duration-us = <10>;
};
device@2 { /* device connected to port 2 */
diff --git a/Documentation/driver-api/pwm.rst b/Documentation/driver-api/pwm.rst
index ab62f1bb03..7fdff19ed2 100644
--- a/Documentation/driver-api/pwm.rst
+++ b/Documentation/driver-api/pwm.rst
@@ -89,9 +89,11 @@ will find:
The PWM channels are numbered using a per-chip index from 0 to npwm-1.
-When a PWM channel is exported a pwmX directory will be created in the
+When a PWM channel is exported a pwm-N:X directory will be created in the
pwmchipN directory it is associated with, where X is the number of the
-channel that was exported. The following properties will then be available:
+channel that was exported. It will also be exposed at /sys/class/pwm/ and
+can be identified by the pwm_channel device type.
+The following properties will then be available:
period
The total period of the PWM signal (read/write).
diff --git a/Documentation/filesystems/aufs/README b/Documentation/filesystems/aufs/README
new file mode 100644
index 0000000000..6e6774fbf6
--- /dev/null
+++ b/Documentation/filesystems/aufs/README
@@ -0,0 +1,399 @@
+
+Aufs5 -- advanced multi layered unification filesystem version 5.x
+http://aufs.sf.net
+Junjiro R. Okajima
+
+
+0. Introduction
+----------------------------------------
+In the early days, aufs was entirely re-designed and re-implemented
+Unionfs Version 1.x series. Adding many original ideas, approaches,
+improvements and implementations, it became totally different from
+Unionfs while keeping the basic features.
+Later, Unionfs Version 2.x series began taking some of the same
+approaches to aufs1's.
+Unionfs was being developed by Professor Erez Zadok at Stony Brook
+University and his team.
+
+Aufs5 supports linux-v5.0 and later, If you want older kernel version
+support,
+- for linux-v4.x series, try aufs4-linux.git or aufs4-standalone.git
+- for linux-v3.x series, try aufs3-linux.git or aufs3-standalone.git
+- for linux-v2.6.16 and later, try aufs2-2.6.git, aufs2-standalone.git
+ or aufs1 from CVS on SourceForge.
+
+Note: it becomes clear that "Aufs was rejected. Let's give it up."
+ According to Christoph Hellwig, linux rejects all union-type
+ filesystems but UnionMount.
+<http://marc.info/?l=linux-kernel&m=123938533724484&w=2>
+
+PS. Al Viro seems have a plan to merge aufs as well as overlayfs and
+ UnionMount, and he pointed out an issue around a directory mutex
+ lock and aufs addressed it. But it is still unsure whether aufs will
+ be merged (or any other union solution).
+<http://marc.info/?l=linux-kernel&m=136312705029295&w=1>
+
+
+1. Features
+----------------------------------------
+- unite several directories into a single virtual filesystem. The member
+ directory is called as a branch.
+- you can specify the permission flags to the branch, which are 'readonly',
+ 'readwrite' and 'whiteout-able.'
+- by upper writable branch, internal copyup and whiteout, files/dirs on
+ readonly branch are modifiable logically.
+- dynamic branch manipulation, add, del.
+- etc...
+
+Also there are many enhancements in aufs, such as:
+- test only the highest one for the directory permission (dirperm1)
+- copyup on open (coo=)
+- 'move' policy for copy-up between two writable branches, after
+ checking free space.
+- xattr, acl
+- readdir(3) in userspace.
+- keep inode number by external inode number table
+- keep the timestamps of file/dir in internal copyup operation
+- seekable directory, supporting NFS readdir.
+- whiteout is hardlinked in order to reduce the consumption of inodes
+ on branch
+- do not copyup, nor create a whiteout when it is unnecessary
+- revert a single systemcall when an error occurs in aufs
+- remount interface instead of ioctl
+- maintain /etc/mtab by an external command, /sbin/mount.aufs.
+- loopback mounted filesystem as a branch
+- kernel thread for removing the dir who has a plenty of whiteouts
+- support copyup sparse file (a file which has a 'hole' in it)
+- default permission flags for branches
+- selectable permission flags for ro branch, whether whiteout can
+ exist or not
+- export via NFS.
+- support <sysfs>/fs/aufs and <debugfs>/aufs.
+- support multiple writable branches, some policies to select one
+ among multiple writable branches.
+- a new semantics for link(2) and rename(2) to support multiple
+ writable branches.
+- no glibc changes are required.
+- pseudo hardlink (hardlink over branches)
+- allow a direct access manually to a file on branch, e.g. bypassing aufs.
+ including NFS or remote filesystem branch.
+- userspace wrapper for pathconf(3)/fpathconf(3) with _PC_LINK_MAX.
+- and more...
+
+Currently these features are dropped temporary from aufs5.
+See design/08plan.txt in detail.
+- nested mount, i.e. aufs as readonly no-whiteout branch of another aufs
+ (robr)
+- statistics of aufs thread (/sys/fs/aufs/stat)
+
+Features or just an idea in the future (see also design/*.txt),
+- reorder the branch index without del/re-add.
+- permanent xino files for NFSD
+- an option for refreshing the opened files after add/del branches
+- light version, without branch manipulation. (unnecessary?)
+- copyup in userspace
+- inotify in userspace
+- readv/writev
+
+
+2. Download
+----------------------------------------
+There are three GIT trees for aufs5, aufs5-linux.git,
+aufs5-standalone.git, and aufs-util.git. Note that there is no "5" in
+"aufs-util.git."
+While the aufs-util is always necessary, you need either of aufs5-linux
+or aufs5-standalone.
+
+The aufs5-linux tree includes the whole linux mainline GIT tree,
+git://git.kernel.org/.../torvalds/linux.git.
+And you cannot select CONFIG_AUFS_FS=m for this version, eg. you cannot
+build aufs5 as an external kernel module.
+Several extra patches are not included in this tree. Only
+aufs5-standalone tree contains them. They are described in the later
+section "Configuration and Compilation."
+
+On the other hand, the aufs5-standalone tree has only aufs source files
+and necessary patches, and you can select CONFIG_AUFS_FS=m.
+But you need to apply all aufs patches manually.
+
+You will find GIT branches whose name is in form of "aufs5.x" where "x"
+represents the linux kernel version, "linux-5.x". For instance,
+"aufs5.0" is for linux-5.0. For latest "linux-5.x-rcN", use
+"aufs5.x-rcN" branch.
+
+o aufs5-linux tree
+$ git clone --reference /your/linux/git/tree \
+ git://github.com/sfjro/aufs5-linux.git aufs5-linux.git
+- if you don't have linux GIT tree, then remove "--reference ..."
+$ cd aufs5-linux.git
+$ git checkout origin/aufs5.0
+
+Or You may want to directly git-pull aufs into your linux GIT tree, and
+leave the patch-work to GIT.
+$ cd /your/linux/git/tree
+$ git remote add aufs5 git://github.com/sfjro/aufs5-linux.git
+$ git fetch aufs5
+$ git checkout -b my5.0 v5.0
+$ (add your local change...)
+$ git pull aufs5 aufs5.0
+- now you have v5.0 + your_changes + aufs5.0 in you my5.0 branch.
+- you may need to solve some conflicts between your_changes and
+ aufs5.0. in this case, git-rerere is recommended so that you can
+ solve the similar conflicts automatically when you upgrade to 5.1 or
+ later in the future.
+
+o aufs5-standalone tree
+$ git clone git://github.com/sfjro/aufs5-standalone.git aufs5-standalone.git
+$ cd aufs5-standalone.git
+$ git checkout origin/aufs5.0
+
+o aufs-util tree
+$ git clone git://git.code.sf.net/p/aufs/aufs-util aufs-util.git
+- note that the public aufs-util.git is on SourceForge instead of
+ GitHUB.
+$ cd aufs-util.git
+$ git checkout origin/aufs5.0
+
+Note: The 5.x-rcN branch is to be used with `rc' kernel versions ONLY.
+The minor version number, 'x' in '5.x', of aufs may not always
+follow the minor version number of the kernel.
+Because changes in the kernel that cause the use of a new
+minor version number do not always require changes to aufs-util.
+
+Since aufs-util has its own minor version number, you may not be
+able to find a GIT branch in aufs-util for your kernel's
+exact minor version number.
+In this case, you should git-checkout the branch for the
+nearest lower number.
+
+For (an unreleased) example:
+If you are using "linux-5.10" and the "aufs5.10" branch
+does not exist in aufs-util repository, then "aufs5.9", "aufs5.8"
+or something numerically smaller is the branch for your kernel.
+
+Also you can view all branches by
+ $ git branch -a
+
+
+3. Configuration and Compilation
+----------------------------------------
+Make sure you have git-checkout'ed the correct branch.
+
+For aufs5-linux tree,
+- enable CONFIG_AUFS_FS.
+- set other aufs configurations if necessary.
+
+For aufs5-standalone tree,
+There are several ways to build.
+
+1.
+- apply ./aufs5-kbuild.patch to your kernel source files.
+- apply ./aufs5-base.patch too.
+- apply ./aufs5-mmap.patch too.
+- apply ./aufs5-standalone.patch too, if you have a plan to set
+ CONFIG_AUFS_FS=m. otherwise you don't need ./aufs5-standalone.patch.
+- copy ./{Documentation,fs,include/uapi/linux/aufs_type.h} files to your
+ kernel source tree. Never copy $PWD/include/uapi/linux/Kbuild.
+- enable CONFIG_AUFS_FS, you can select either
+ =m or =y.
+- and build your kernel as usual.
+- install the built kernel.
+- install the header files too by "make headers_install" to the
+ directory where you specify. By default, it is $PWD/usr.
+ "make help" shows a brief note for headers_install.
+- and reboot your system.
+
+2.
+- module only (CONFIG_AUFS_FS=m).
+- apply ./aufs5-base.patch to your kernel source files.
+- apply ./aufs5-mmap.patch too.
+- apply ./aufs5-standalone.patch too.
+- build your kernel, don't forget "make headers_install", and reboot.
+- edit ./config.mk and set other aufs configurations if necessary.
+ Note: You should read $PWD/fs/aufs/Kconfig carefully which describes
+ every aufs configurations.
+- build the module by simple "make".
+- you can specify ${KDIR} make variable which points to your kernel
+ source tree.
+- install the files
+ + run "make install" to install the aufs module, or copy the built
+ $PWD/aufs.ko to /lib/modules/... and run depmod -a (or reboot simply).
+ + run "make install_headers" (instead of headers_install) to install
+ the modified aufs header file (you can specify DESTDIR which is
+ available in aufs standalone version's Makefile only), or copy
+ $PWD/usr/include/linux/aufs_type.h to /usr/include/linux or wherever
+ you like manually. By default, the target directory is $PWD/usr.
+- no need to apply aufs5-kbuild.patch, nor copying source files to your
+ kernel source tree.
+
+Note: The header file aufs_type.h is necessary to build aufs-util
+ as well as "make headers_install" in the kernel source tree.
+ headers_install is subject to be forgotten, but it is essentially
+ necessary, not only for building aufs-util.
+ You may not meet problems without headers_install in some older
+ version though.
+
+And then,
+- read README in aufs-util, build and install it
+- note that your distribution may contain an obsoleted version of
+ aufs_type.h in /usr/include/linux or something. When you build aufs
+ utilities, make sure that your compiler refers the correct aufs header
+ file which is built by "make headers_install."
+- if you want to use readdir(3) in userspace or pathconf(3) wrapper,
+ then run "make install_ulib" too. And refer to the aufs manual in
+ detail.
+
+There several other patches in aufs5-standalone.git. They are all
+optional. When you meet some problems, they will help you.
+- aufs5-loopback.patch
+ Supports a nested loopback mount in a branch-fs. This patch is
+ unnecessary until aufs produces a message like "you may want to try
+ another patch for loopback file".
+- proc_mounts.patch
+ When there are many mountpoints and many mount(2)/umount(2) are
+ running, then /proc/mounts may not show the all mountpoints. This
+ patch makes /proc/mounts always show the full mountpoints list.
+ If you don't want to apply this patch and meet such problem, then you
+ need to increase the value of 'ProcMounts_Times' make-variable in
+ aufs-util.git as a second best solution.
+- vfs-ino.patch
+ Modifies a system global kernel internal function get_next_ino() in
+ order to stop assigning 0 for an inode-number. Not directly related to
+ aufs, but recommended generally.
+- tmpfs-idr.patch
+ Keeps the tmpfs inode number as the lowest value. Effective to reduce
+ the size of aufs XINO files for tmpfs branch. Also it prevents the
+ duplication of inode number, which is important for backup tools and
+ other utilities. When you find aufs XINO files for tmpfs branch
+ growing too much, try this patch.
+- lockdep-debug.patch
+ Because aufs is not only an ordinary filesystem (callee of VFS), but
+ also a caller of VFS functions for branch filesystems, subclassing of
+ the internal locks for LOCKDEP is necessary. LOCKDEP is a debugging
+ feature of linux kernel. If you enable CONFIG_LOCKDEP, then you will
+ need to apply this debug patch to expand several constant values.
+ If don't know what LOCKDEP is, then you don't have apply this patch.
+
+
+4. Usage
+----------------------------------------
+At first, make sure aufs-util are installed, and please read the aufs
+manual, aufs.5 in aufs-util.git tree.
+$ man -l aufs.5
+
+And then,
+$ mkdir /tmp/rw /tmp/aufs
+# mount -t aufs -o br=/tmp/rw:${HOME} none /tmp/aufs
+
+Here is another example. The result is equivalent.
+# mount -t aufs -o br=/tmp/rw=rw:${HOME}=ro none /tmp/aufs
+ Or
+# mount -t aufs -o br:/tmp/rw none /tmp/aufs
+# mount -o remount,append:${HOME} /tmp/aufs
+
+Then, you can see whole tree of your home dir through /tmp/aufs. If
+you modify a file under /tmp/aufs, the one on your home directory is
+not affected, instead the same named file will be newly created under
+/tmp/rw. And all of your modification to a file will be applied to
+the one under /tmp/rw. This is called the file based Copy on Write
+(COW) method.
+Aufs mount options are described in aufs.5.
+If you run chroot or something and make your aufs as a root directory,
+then you need to customize the shutdown script. See the aufs manual in
+detail.
+
+Additionally, there are some sample usages of aufs which are a
+diskless system with network booting, and LiveCD over NFS.
+See sample dir in CVS tree on SourceForge.
+
+
+5. Contact
+----------------------------------------
+When you have any problems or strange behaviour in aufs, please let me
+know with:
+- /proc/mounts (instead of the output of mount(8))
+- /sys/module/aufs/*
+- /sys/fs/aufs/* (if you have them)
+- /debug/aufs/* (if you have them)
+- linux kernel version
+ if your kernel is not plain, for example modified by distributor,
+ the url where i can download its source is necessary too.
+- aufs version which was printed at loading the module or booting the
+ system, instead of the date you downloaded.
+- configuration (define/undefine CONFIG_AUFS_xxx)
+- kernel configuration or /proc/config.gz (if you have it)
+- behaviour which you think to be incorrect
+- actual operation, reproducible one is better
+- mailto: aufs-users at lists.sourceforge.net
+
+Usually, I don't watch the Public Areas(Bugs, Support Requests, Patches,
+and Feature Requests) on SourceForge. Please join and write to
+aufs-users ML.
+
+
+6. Acknowledgements
+----------------------------------------
+Thanks to everyone who have tried and are using aufs, whoever
+have reported a bug or any feedback.
+
+Especially donators:
+Tomas Matejicek(slax.org) made a donation (much more than once).
+ Since Apr 2010, Tomas M (the author of Slax and Linux Live
+ scripts) is making "doubling" donations.
+ Unfortunately I cannot list all of the donators, but I really
+ appreciate.
+ It ends Aug 2010, but the ordinary donation URL is still available.
+ <http://sourceforge.net/donate/index.php?group_id=167503>
+Dai Itasaka made a donation (2007/8).
+Chuck Smith made a donation (2008/4, 10 and 12).
+Henk Schoneveld made a donation (2008/9).
+Chih-Wei Huang, ASUS, CTC donated Eee PC 4G (2008/10).
+Francois Dupoux made a donation (2008/11).
+Bruno Cesar Ribas and Luis Carlos Erpen de Bona, C3SL serves public
+ aufs2 GIT tree (2009/2).
+William Grant made a donation (2009/3).
+Patrick Lane made a donation (2009/4).
+The Mail Archive (mail-archive.com) made donations (2009/5).
+Nippy Networks (Ed Wildgoose) made a donation (2009/7).
+New Dream Network, LLC (www.dreamhost.com) made a donation (2009/11).
+Pavel Pronskiy made a donation (2011/2).
+Iridium and Inmarsat satellite phone retailer (www.mailasail.com), Nippy
+ Networks (Ed Wildgoose) made a donation for hardware (2011/3).
+Max Lekomcev (DOM-TV project) made a donation (2011/7, 12, 2012/3, 6 and
+11).
+Sam Liddicott made a donation (2011/9).
+Era Scarecrow made a donation (2013/4).
+Bor Ratajc made a donation (2013/4).
+Alessandro Gorreta made a donation (2013/4).
+POIRETTE Marc made a donation (2013/4).
+Alessandro Gorreta made a donation (2013/4).
+lauri kasvandik made a donation (2013/5).
+"pemasu from Finland" made a donation (2013/7).
+The Parted Magic Project made a donation (2013/9 and 11).
+Pavel Barta made a donation (2013/10).
+Nikolay Pertsev made a donation (2014/5).
+James B made a donation (2014/7 and 2015/7).
+Stefano Di Biase made a donation (2014/8).
+Daniel Epellei made a donation (2015/1).
+OmegaPhil made a donation (2016/1, 2018/4).
+Tomasz Szewczyk made a donation (2016/4).
+James Burry made a donation (2016/12).
+Carsten Rose made a donation (2018/9).
+Porteus Kiosk made a donation (2018/10).
+
+Thank you very much.
+Donations are always, including future donations, very important and
+helpful for me to keep on developing aufs.
+
+
+7.
+----------------------------------------
+If you are an experienced user, no explanation is needed. Aufs is
+just a linux filesystem.
+
+
+Enjoy!
+
+# Local variables: ;
+# mode: text;
+# End: ;
diff --git a/Documentation/filesystems/aufs/design/01intro.txt b/Documentation/filesystems/aufs/design/01intro.txt
new file mode 100644
index 0000000000..609bf0e9b9
--- /dev/null
+++ b/Documentation/filesystems/aufs/design/01intro.txt
@@ -0,0 +1,171 @@
+
+# Copyright (C) 2005-2019 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Introduction
+----------------------------------------
+
+aufs [ei ju: ef es] | /ey-yoo-ef-es/ | [a u f s]
+1. abbrev. for "advanced multi-layered unification filesystem".
+2. abbrev. for "another unionfs".
+3. abbrev. for "auf das" in German which means "on the" in English.
+ Ex. "Butter aufs Brot"(G) means "butter onto bread"(E).
+ But "Filesystem aufs Filesystem" is hard to understand.
+4. abbrev. for "African Urban Fashion Show".
+
+AUFS is a filesystem with features:
+- multi layered stackable unification filesystem, the member directory
+ is called as a branch.
+- branch permission and attribute, 'readonly', 'real-readonly',
+ 'readwrite', 'whiteout-able', 'link-able whiteout', etc. and their
+ combination.
+- internal "file copy-on-write".
+- logical deletion, whiteout.
+- dynamic branch manipulation, adding, deleting and changing permission.
+- allow bypassing aufs, user's direct branch access.
+- external inode number translation table and bitmap which maintains the
+ persistent aufs inode number.
+- seekable directory, including NFS readdir.
+- file mapping, mmap and sharing pages.
+- pseudo-link, hardlink over branches.
+- loopback mounted filesystem as a branch.
+- several policies to select one among multiple writable branches.
+- revert a single systemcall when an error occurs in aufs.
+- and more...
+
+
+Multi Layered Stackable Unification Filesystem
+----------------------------------------------------------------------
+Most people already knows what it is.
+It is a filesystem which unifies several directories and provides a
+merged single directory. When users access a file, the access will be
+passed/re-directed/converted (sorry, I am not sure which English word is
+correct) to the real file on the member filesystem. The member
+filesystem is called 'lower filesystem' or 'branch' and has a mode
+'readonly' and 'readwrite.' And the deletion for a file on the lower
+readonly branch is handled by creating 'whiteout' on the upper writable
+branch.
+
+On LKML, there have been discussions about UnionMount (Jan Blunck,
+Bharata B Rao and Valerie Aurora) and Unionfs (Erez Zadok). They took
+different approaches to implement the merged-view.
+The former tries putting it into VFS, and the latter implements as a
+separate filesystem.
+(If I misunderstand about these implementations, please let me know and
+I shall correct it. Because it is a long time ago when I read their
+source files last time).
+
+UnionMount's approach will be able to small, but may be hard to share
+branches between several UnionMount since the whiteout in it is
+implemented in the inode on branch filesystem and always
+shared. According to Bharata's post, readdir does not seems to be
+finished yet.
+There are several missing features known in this implementations such as
+- for users, the inode number may change silently. eg. copy-up.
+- link(2) may break by copy-up.
+- read(2) may get an obsoleted filedata (fstat(2) too).
+- fcntl(F_SETLK) may be broken by copy-up.
+- unnecessary copy-up may happen, for example mmap(MAP_PRIVATE) after
+ open(O_RDWR).
+
+In linux-3.18, "overlay" filesystem (formerly known as "overlayfs") was
+merged into mainline. This is another implementation of UnionMount as a
+separated filesystem. All the limitations and known problems which
+UnionMount are equally inherited to "overlay" filesystem.
+
+Unionfs has a longer history. When I started implementing a stackable
+filesystem (Aug 2005), it already existed. It has virtual super_block,
+inode, dentry and file objects and they have an array pointing lower
+same kind objects. After contributing many patches for Unionfs, I
+re-started my project AUFS (Jun 2006).
+
+In AUFS, the structure of filesystem resembles to Unionfs, but I
+implemented my own ideas, approaches and enhancements and it became
+totally different one.
+
+Comparing DM snapshot and fs based implementation
+- the number of bytes to be copied between devices is much smaller.
+- the type of filesystem must be one and only.
+- the fs must be writable, no readonly fs, even for the lower original
+ device. so the compression fs will not be usable. but if we use
+ loopback mount, we may address this issue.
+ for instance,
+ mount /cdrom/squashfs.img /sq
+ losetup /sq/ext2.img
+ losetup /somewhere/cow
+ dmsetup "snapshot /dev/loop0 /dev/loop1 ..."
+- it will be difficult (or needs more operations) to extract the
+ difference between the original device and COW.
+- DM snapshot-merge may help a lot when users try merging. in the
+ fs-layer union, users will use rsync(1).
+
+You may want to read my old paper "Filesystems in LiveCD"
+(http://aufs.sourceforge.net/aufs2/report/sq/sq.pdf).
+
+
+Several characters/aspects/persona of aufs
+----------------------------------------------------------------------
+
+Aufs has several characters, aspects or persona.
+1. a filesystem, callee of VFS helper
+2. sub-VFS, caller of VFS helper for branches
+3. a virtual filesystem which maintains persistent inode number
+4. reader/writer of files on branches such like an application
+
+1. Callee of VFS Helper
+As an ordinary linux filesystem, aufs is a callee of VFS. For instance,
+unlink(2) from an application reaches sys_unlink() kernel function and
+then vfs_unlink() is called. vfs_unlink() is one of VFS helper and it
+calls filesystem specific unlink operation. Actually aufs implements the
+unlink operation but it behaves like a redirector.
+
+2. Caller of VFS Helper for Branches
+aufs_unlink() passes the unlink request to the branch filesystem as if
+it were called from VFS. So the called unlink operation of the branch
+filesystem acts as usual. As a caller of VFS helper, aufs should handle
+every necessary pre/post operation for the branch filesystem.
+- acquire the lock for the parent dir on a branch
+- lookup in a branch
+- revalidate dentry on a branch
+- mnt_want_write() for a branch
+- vfs_unlink() for a branch
+- mnt_drop_write() for a branch
+- release the lock on a branch
+
+3. Persistent Inode Number
+One of the most important issue for a filesystem is to maintain inode
+numbers. This is particularly important to support exporting a
+filesystem via NFS. Aufs is a virtual filesystem which doesn't have a
+backend block device for its own. But some storage is necessary to
+keep and maintain the inode numbers. It may be a large space and may not
+suit to keep in memory. Aufs rents some space from its first writable
+branch filesystem (by default) and creates file(s) on it. These files
+are created by aufs internally and removed soon (currently) keeping
+opened.
+Note: Because these files are removed, they are totally gone after
+ unmounting aufs. It means the inode numbers are not persistent
+ across unmount or reboot. I have a plan to make them really
+ persistent which will be important for aufs on NFS server.
+
+4. Read/Write Files Internally (copy-on-write)
+Because a branch can be readonly, when you write a file on it, aufs will
+"copy-up" it to the upper writable branch internally. And then write the
+originally requested thing to the file. Generally kernel doesn't
+open/read/write file actively. In aufs, even a single write may cause a
+internal "file copy". This behaviour is very similar to cp(1) command.
+
+Some people may think it is better to pass such work to user space
+helper, instead of doing in kernel space. Actually I am still thinking
+about it. But currently I have implemented it in kernel space.
diff --git a/Documentation/filesystems/aufs/design/02struct.txt b/Documentation/filesystems/aufs/design/02struct.txt
new file mode 100644
index 0000000000..2467788c7f
--- /dev/null
+++ b/Documentation/filesystems/aufs/design/02struct.txt
@@ -0,0 +1,258 @@
+
+# Copyright (C) 2005-2019 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Basic Aufs Internal Structure
+
+Superblock/Inode/Dentry/File Objects
+----------------------------------------------------------------------
+As like an ordinary filesystem, aufs has its own
+superblock/inode/dentry/file objects. All these objects have a
+dynamically allocated array and store the same kind of pointers to the
+lower filesystem, branch.
+For example, when you build a union with one readwrite branch and one
+readonly, mounted /au, /rw and /ro respectively.
+- /au = /rw + /ro
+- /ro/fileA exists but /rw/fileA
+
+Aufs lookup operation finds /ro/fileA and gets dentry for that. These
+pointers are stored in a aufs dentry. The array in aufs dentry will be,
+- [0] = NULL (because /rw/fileA doesn't exist)
+- [1] = /ro/fileA
+
+This style of an array is essentially same to the aufs
+superblock/inode/dentry/file objects.
+
+Because aufs supports manipulating branches, ie. add/delete/change
+branches dynamically, these objects has its own generation. When
+branches are changed, the generation in aufs superblock is
+incremented. And a generation in other object are compared when it is
+accessed. When a generation in other objects are obsoleted, aufs
+refreshes the internal array.
+
+
+Superblock
+----------------------------------------------------------------------
+Additionally aufs superblock has some data for policies to select one
+among multiple writable branches, XIB files, pseudo-links and kobject.
+See below in detail.
+About the policies which supports copy-down a directory, see
+wbr_policy.txt too.
+
+
+Branch and XINO(External Inode Number Translation Table)
+----------------------------------------------------------------------
+Every branch has its own xino (external inode number translation table)
+file. The xino file is created and unlinked by aufs internally. When two
+members of a union exist on the same filesystem, they share the single
+xino file.
+The struct of a xino file is simple, just a sequence of aufs inode
+numbers which is indexed by the lower inode number.
+In the above sample, assume the inode number of /ro/fileA is i111 and
+aufs assigns the inode number i999 for fileA. Then aufs writes 999 as
+4(8) bytes at 111 * 4(8) bytes offset in the xino file.
+
+When the inode numbers are not contiguous, the xino file will be sparse
+which has a hole in it and doesn't consume as much disk space as it
+might appear. If your branch filesystem consumes disk space for such
+holes, then you should specify 'xino=' option at mounting aufs.
+
+Aufs has a mount option to free the disk blocks for such holes in XINO
+files on tmpfs or ramdisk. But it is not so effective actually. If you
+meet a problem of disk shortage due to XINO files, then you should try
+"tmpfs-ino.patch" (and "vfs-ino.patch" too) in aufs4-standalone.git.
+The patch localizes the assignment inumbers per tmpfs-mount and avoid
+the holes in XINO files.
+
+Also a writable branch has three kinds of "whiteout bases". All these
+are existed when the branch is joined to aufs, and their names are
+whiteout-ed doubly, so that users will never see their names in aufs
+hierarchy.
+1. a regular file which will be hardlinked to all whiteouts.
+2. a directory to store a pseudo-link.
+3. a directory to store an "orphan"-ed file temporary.
+
+1. Whiteout Base
+ When you remove a file on a readonly branch, aufs handles it as a
+ logical deletion and creates a whiteout on the upper writable branch
+ as a hardlink of this file in order not to consume inode on the
+ writable branch.
+2. Pseudo-link Dir
+ See below, Pseudo-link.
+3. Step-Parent Dir
+ When "fileC" exists on the lower readonly branch only and it is
+ opened and removed with its parent dir, and then user writes
+ something into it, then aufs copies-up fileC to this
+ directory. Because there is no other dir to store fileC. After
+ creating a file under this dir, the file is unlinked.
+
+Because aufs supports manipulating branches, ie. add/delete/change
+dynamically, a branch has its own id. When the branch order changes,
+aufs finds the new index by searching the branch id.
+
+
+Pseudo-link
+----------------------------------------------------------------------
+Assume "fileA" exists on the lower readonly branch only and it is
+hardlinked to "fileB" on the branch. When you write something to fileA,
+aufs copies-up it to the upper writable branch. Additionally aufs
+creates a hardlink under the Pseudo-link Directory of the writable
+branch. The inode of a pseudo-link is kept in aufs super_block as a
+simple list. If fileB is read after unlinking fileA, aufs returns
+filedata from the pseudo-link instead of the lower readonly
+branch. Because the pseudo-link is based upon the inode, to keep the
+inode number by xino (see above) is essentially necessary.
+
+All the hardlinks under the Pseudo-link Directory of the writable branch
+should be restored in a proper location later. Aufs provides a utility
+to do this. The userspace helpers executed at remounting and unmounting
+aufs by default.
+During this utility is running, it puts aufs into the pseudo-link
+maintenance mode. In this mode, only the process which began the
+maintenance mode (and its child processes) is allowed to operate in
+aufs. Some other processes which are not related to the pseudo-link will
+be allowed to run too, but the rest have to return an error or wait
+until the maintenance mode ends. If a process already acquires an inode
+mutex (in VFS), it has to return an error.
+
+
+XIB(external inode number bitmap)
+----------------------------------------------------------------------
+Addition to the xino file per a branch, aufs has an external inode number
+bitmap in a superblock object. It is also an internal file such like a
+xino file.
+It is a simple bitmap to mark whether the aufs inode number is in-use or
+not.
+To reduce the file I/O, aufs prepares a single memory page to cache xib.
+
+As well as XINO files, aufs has a feature to truncate/refresh XIB to
+reduce the number of consumed disk blocks for these files.
+
+
+Virtual or Vertical Dir, and Readdir in Userspace
+----------------------------------------------------------------------
+In order to support multiple layers (branches), aufs readdir operation
+constructs a virtual dir block on memory. For readdir, aufs calls
+vfs_readdir() internally for each dir on branches, merges their entries
+with eliminating the whiteout-ed ones, and sets it to file (dir)
+object. So the file object has its entry list until it is closed. The
+entry list will be updated when the file position is zero and becomes
+obsoleted. This decision is made in aufs automatically.
+
+The dynamically allocated memory block for the name of entries has a
+unit of 512 bytes (by default) and stores the names contiguously (no
+padding). Another block for each entry is handled by kmem_cache too.
+During building dir blocks, aufs creates hash list and judging whether
+the entry is whiteouted by its upper branch or already listed.
+The merged result is cached in the corresponding inode object and
+maintained by a customizable life-time option.
+
+Some people may call it can be a security hole or invite DoS attack
+since the opened and once readdir-ed dir (file object) holds its entry
+list and becomes a pressure for system memory. But I'd say it is similar
+to files under /proc or /sys. The virtual files in them also holds a
+memory page (generally) while they are opened. When an idea to reduce
+memory for them is introduced, it will be applied to aufs too.
+For those who really hate this situation, I've developed readdir(3)
+library which operates this merging in userspace. You just need to set
+LD_PRELOAD environment variable, and aufs will not consume no memory in
+kernel space for readdir(3).
+
+
+Workqueue
+----------------------------------------------------------------------
+Aufs sometimes requires privilege access to a branch. For instance,
+in copy-up/down operation. When a user process is going to make changes
+to a file which exists in the lower readonly branch only, and the mode
+of one of ancestor directories may not be writable by a user
+process. Here aufs copy-up the file with its ancestors and they may
+require privilege to set its owner/group/mode/etc.
+This is a typical case of a application character of aufs (see
+Introduction).
+
+Aufs uses workqueue synchronously for this case. It creates its own
+workqueue. The workqueue is a kernel thread and has privilege. Aufs
+passes the request to call mkdir or write (for example), and wait for
+its completion. This approach solves a problem of a signal handler
+simply.
+If aufs didn't adopt the workqueue and changed the privilege of the
+process, then the process may receive the unexpected SIGXFSZ or other
+signals.
+
+Also aufs uses the system global workqueue ("events" kernel thread) too
+for asynchronous tasks, such like handling inotify/fsnotify, re-creating a
+whiteout base and etc. This is unrelated to a privilege.
+Most of aufs operation tries acquiring a rw_semaphore for aufs
+superblock at the beginning, at the same time waits for the completion
+of all queued asynchronous tasks.
+
+
+Whiteout
+----------------------------------------------------------------------
+The whiteout in aufs is very similar to Unionfs's. That is represented
+by its filename. UnionMount takes an approach of a file mode, but I am
+afraid several utilities (find(1) or something) will have to support it.
+
+Basically the whiteout represents "logical deletion" which stops aufs to
+lookup further, but also it represents "dir is opaque" which also stop
+further lookup.
+
+In aufs, rmdir(2) and rename(2) for dir uses whiteout alternatively.
+In order to make several functions in a single systemcall to be
+revertible, aufs adopts an approach to rename a directory to a temporary
+unique whiteouted name.
+For example, in rename(2) dir where the target dir already existed, aufs
+renames the target dir to a temporary unique whiteouted name before the
+actual rename on a branch, and then handles other actions (make it opaque,
+update the attributes, etc). If an error happens in these actions, aufs
+simply renames the whiteouted name back and returns an error. If all are
+succeeded, aufs registers a function to remove the whiteouted unique
+temporary name completely and asynchronously to the system global
+workqueue.
+
+
+Copy-up
+----------------------------------------------------------------------
+It is a well-known feature or concept.
+When user modifies a file on a readonly branch, aufs operate "copy-up"
+internally and makes change to the new file on the upper writable branch.
+When the trigger systemcall does not update the timestamps of the parent
+dir, aufs reverts it after copy-up.
+
+
+Move-down (aufs3.9 and later)
+----------------------------------------------------------------------
+"Copy-up" is one of the essential feature in aufs. It copies a file from
+the lower readonly branch to the upper writable branch when a user
+changes something about the file.
+"Move-down" is an opposite action of copy-up. Basically this action is
+ran manually instead of automatically and internally.
+For desgin and implementation, aufs has to consider these issues.
+- whiteout for the file may exist on the lower branch.
+- ancestor directories may not exist on the lower branch.
+- diropq for the ancestor directories may exist on the upper branch.
+- free space on the lower branch will reduce.
+- another access to the file may happen during moving-down, including
+ UDBA (see "Revalidate Dentry and UDBA").
+- the file should not be hard-linked nor pseudo-linked. they should be
+ handled by auplink utility later.
+
+Sometimes users want to move-down a file from the upper writable branch
+to the lower readonly or writable branch. For instance,
+- the free space of the upper writable branch is going to run out.
+- create a new intermediate branch between the upper and lower branch.
+- etc.
+
+For this purpose, use "aumvdown" command in aufs-util.git.
diff --git a/Documentation/filesystems/aufs/design/03atomic_open.txt b/Documentation/filesystems/aufs/design/03atomic_open.txt
new file mode 100644
index 0000000000..9f16ac1e01
--- /dev/null
+++ b/Documentation/filesystems/aufs/design/03atomic_open.txt
@@ -0,0 +1,85 @@
+
+# Copyright (C) 2015-2019 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Support for a branch who has its ->atomic_open()
+----------------------------------------------------------------------
+The filesystems who implement its ->atomic_open() are not majority. For
+example NFSv4 does, and aufs should call NFSv4 ->atomic_open,
+particularly for open(O_CREAT|O_EXCL, 0400) case. Other than
+->atomic_open(), NFSv4 returns an error for this open(2). While I am not
+sure whether all filesystems who have ->atomic_open() behave like this,
+but NFSv4 surely returns the error.
+
+In order to support ->atomic_open() for aufs, there are a few
+approaches.
+
+A. Introduce aufs_atomic_open()
+ - calls one of VFS:do_last(), lookup_open() or atomic_open() for
+ branch fs.
+B. Introduce aufs_atomic_open() calling create, open and chmod. this is
+ an aufs user Pip Cet's approach
+ - calls aufs_create(), VFS finish_open() and notify_change().
+ - pass fake-mode to finish_open(), and then correct the mode by
+ notify_change().
+C. Extend aufs_open() to call branch fs's ->atomic_open()
+ - no aufs_atomic_open().
+ - aufs_lookup() registers the TID to an aufs internal object.
+ - aufs_create() does nothing when the matching TID is registered, but
+ registers the mode.
+ - aufs_open() calls branch fs's ->atomic_open() when the matching
+ TID is registered.
+D. Extend aufs_open() to re-try branch fs's ->open() with superuser's
+ credential
+ - no aufs_atomic_open().
+ - aufs_create() registers the TID to an internal object. this info
+ represents "this process created this file just now."
+ - when aufs gets EACCES from branch fs's ->open(), then confirm the
+ registered TID and re-try open() with superuser's credential.
+
+Pros and cons for each approach.
+
+A.
+ - straightforward but highly depends upon VFS internal.
+ - the atomic behavaiour is kept.
+ - some of parameters such as nameidata are hard to reproduce for
+ branch fs.
+ - large overhead.
+B.
+ - easy to implement.
+ - the atomic behavaiour is lost.
+C.
+ - the atomic behavaiour is kept.
+ - dirty and tricky.
+ - VFS checks whether the file is created correctly after calling
+ ->create(), which means this approach doesn't work.
+D.
+ - easy to implement.
+ - the atomic behavaiour is lost.
+ - to open a file with superuser's credential and give it to a user
+ process is a bad idea, since the file object keeps the credential
+ in it. It may affect LSM or something. This approach doesn't work
+ either.
+
+The approach A is ideal, but it hard to implement. So here is a
+variation of A, which is to be implemented.
+
+A-1. Introduce aufs_atomic_open()
+ - calls branch fs ->atomic_open() if exists. otherwise calls
+ vfs_create() and finish_open().
+ - the demerit is that the several checks after branch fs
+ ->atomic_open() are lost. in the ordinary case, the checks are
+ done by VFS:do_last(), lookup_open() and atomic_open(). some can
+ be implemented in aufs, but not all I am afraid.
diff --git a/Documentation/filesystems/aufs/design/03lookup.txt b/Documentation/filesystems/aufs/design/03lookup.txt
new file mode 100644
index 0000000000..08b443d94d
--- /dev/null
+++ b/Documentation/filesystems/aufs/design/03lookup.txt
@@ -0,0 +1,113 @@
+
+# Copyright (C) 2005-2019 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Lookup in a Branch
+----------------------------------------------------------------------
+Since aufs has a character of sub-VFS (see Introduction), it operates
+lookup for branches as VFS does. It may be a heavy work. But almost all
+lookup operation in aufs is the simplest case, ie. lookup only an entry
+directly connected to its parent. Digging down the directory hierarchy
+is unnecessary. VFS has a function lookup_one_len() for that use, and
+aufs calls it.
+
+When a branch is a remote filesystem, aufs basically relies upon its
+->d_revalidate(), also aufs forces the hardest revalidate tests for
+them.
+For d_revalidate, aufs implements three levels of revalidate tests. See
+"Revalidate Dentry and UDBA" in detail.
+
+
+Test Only the Highest One for the Directory Permission (dirperm1 option)
+----------------------------------------------------------------------
+Let's try case study.
+- aufs has two branches, upper readwrite and lower readonly.
+ /au = /rw + /ro
+- "dirA" exists under /ro, but /rw. and its mode is 0700.
+- user invoked "chmod a+rx /au/dirA"
+- the internal copy-up is activated and "/rw/dirA" is created and its
+ permission bits are set to world readable.
+- then "/au/dirA" becomes world readable?
+
+In this case, /ro/dirA is still 0700 since it exists in readonly branch,
+or it may be a natively readonly filesystem. If aufs respects the lower
+branch, it should not respond readdir request from other users. But user
+allowed it by chmod. Should really aufs rejects showing the entries
+under /ro/dirA?
+
+To be honest, I don't have a good solution for this case. So aufs
+implements 'dirperm1' and 'nodirperm1' mount options, and leave it to
+users.
+When dirperm1 is specified, aufs checks only the highest one for the
+directory permission, and shows the entries. Otherwise, as usual, checks
+every dir existing on all branches and rejects the request.
+
+As a side effect, dirperm1 option improves the performance of aufs
+because the number of permission check is reduced when the number of
+branch is many.
+
+
+Revalidate Dentry and UDBA (User's Direct Branch Access)
+----------------------------------------------------------------------
+Generally VFS helpers re-validate a dentry as a part of lookup.
+0. digging down the directory hierarchy.
+1. lock the parent dir by its i_mutex.
+2. lookup the final (child) entry.
+3. revalidate it.
+4. call the actual operation (create, unlink, etc.)
+5. unlock the parent dir
+
+If the filesystem implements its ->d_revalidate() (step 3), then it is
+called. Actually aufs implements it and checks the dentry on a branch is
+still valid.
+But it is not enough. Because aufs has to release the lock for the
+parent dir on a branch at the end of ->lookup() (step 2) and
+->d_revalidate() (step 3) while the i_mutex of the aufs dir is still
+held by VFS.
+If the file on a branch is changed directly, eg. bypassing aufs, after
+aufs released the lock, then the subsequent operation may cause
+something unpleasant result.
+
+This situation is a result of VFS architecture, ->lookup() and
+->d_revalidate() is separated. But I never say it is wrong. It is a good
+design from VFS's point of view. It is just not suitable for sub-VFS
+character in aufs.
+
+Aufs supports such case by three level of revalidation which is
+selectable by user.
+1. Simple Revalidate
+ Addition to the native flow in VFS's, confirm the child-parent
+ relationship on the branch just after locking the parent dir on the
+ branch in the "actual operation" (step 4). When this validation
+ fails, aufs returns EBUSY. ->d_revalidate() (step 3) in aufs still
+ checks the validation of the dentry on branches.
+2. Monitor Changes Internally by Inotify/Fsnotify
+ Addition to above, in the "actual operation" (step 4) aufs re-lookup
+ the dentry on the branch, and returns EBUSY if it finds different
+ dentry.
+ Additionally, aufs sets the inotify/fsnotify watch for every dir on branches
+ during it is in cache. When the event is notified, aufs registers a
+ function to kernel 'events' thread by schedule_work(). And the
+ function sets some special status to the cached aufs dentry and inode
+ private data. If they are not cached, then aufs has nothing to
+ do. When the same file is accessed through aufs (step 0-3) later,
+ aufs will detect the status and refresh all necessary data.
+ In this mode, aufs has to ignore the event which is fired by aufs
+ itself.
+3. No Extra Validation
+ This is the simplest test and doesn't add any additional revalidation
+ test, and skip the revalidation in step 4. It is useful and improves
+ aufs performance when system surely hide the aufs branches from user,
+ by over-mounting something (or another method).
diff --git a/Documentation/filesystems/aufs/design/04branch.txt b/Documentation/filesystems/aufs/design/04branch.txt
new file mode 100644
index 0000000000..3ab3682a42
--- /dev/null
+++ b/Documentation/filesystems/aufs/design/04branch.txt
@@ -0,0 +1,74 @@
+
+# Copyright (C) 2005-2019 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Branch Manipulation
+
+Since aufs supports dynamic branch manipulation, ie. add/remove a branch
+and changing its permission/attribute, there are a lot of works to do.
+
+
+Add a Branch
+----------------------------------------------------------------------
+o Confirm the adding dir exists outside of aufs, including loopback
+ mount, and its various attributes.
+o Initialize the xino file and whiteout bases if necessary.
+ See struct.txt.
+
+o Check the owner/group/mode of the directory
+ When the owner/group/mode of the adding directory differs from the
+ existing branch, aufs issues a warning because it may impose a
+ security risk.
+ For example, when a upper writable branch has a world writable empty
+ top directory, a malicious user can create any files on the writable
+ branch directly, like copy-up and modify manually. If something like
+ /etc/{passwd,shadow} exists on the lower readonly branch but the upper
+ writable branch, and the writable branch is world-writable, then a
+ malicious guy may create /etc/passwd on the writable branch directly
+ and the infected file will be valid in aufs.
+ I am afraid it can be a security issue, but aufs can do nothing except
+ producing a warning.
+
+
+Delete a Branch
+----------------------------------------------------------------------
+o Confirm the deleting branch is not busy
+ To be general, there is one merit to adopt "remount" interface to
+ manipulate branches. It is to discard caches. At deleting a branch,
+ aufs checks the still cached (and connected) dentries and inodes. If
+ there are any, then they are all in-use. An inode without its
+ corresponding dentry can be alive alone (for example, inotify/fsnotify case).
+
+ For the cached one, aufs checks whether the same named entry exists on
+ other branches.
+ If the cached one is a directory, because aufs provides a merged view
+ to users, as long as one dir is left on any branch aufs can show the
+ dir to users. In this case, the branch can be removed from aufs.
+ Otherwise aufs rejects deleting the branch.
+
+ If any file on the deleting branch is opened by aufs, then aufs
+ rejects deleting.
+
+
+Modify the Permission of a Branch
+----------------------------------------------------------------------
+o Re-initialize or remove the xino file and whiteout bases if necessary.
+ See struct.txt.
+
+o rw --> ro: Confirm the modifying branch is not busy
+ Aufs rejects the request if any of these conditions are true.
+ - a file on the branch is mmap-ed.
+ - a regular file on the branch is opened for write and there is no
+ same named entry on the upper branch.
diff --git a/Documentation/filesystems/aufs/design/05wbr_policy.txt b/Documentation/filesystems/aufs/design/05wbr_policy.txt
new file mode 100644
index 0000000000..1f9b86bc6a
--- /dev/null
+++ b/Documentation/filesystems/aufs/design/05wbr_policy.txt
@@ -0,0 +1,64 @@
+
+# Copyright (C) 2005-2019 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Policies to Select One among Multiple Writable Branches
+----------------------------------------------------------------------
+When the number of writable branch is more than one, aufs has to decide
+the target branch for file creation or copy-up. By default, the highest
+writable branch which has the parent (or ancestor) dir of the target
+file is chosen (top-down-parent policy).
+By user's request, aufs implements some other policies to select the
+writable branch, for file creation several policies, round-robin,
+most-free-space, and other policies. For copy-up, top-down-parent,
+bottom-up-parent, bottom-up and others.
+
+As expected, the round-robin policy selects the branch in circular. When
+you have two writable branches and creates 10 new files, 5 files will be
+created for each branch. mkdir(2) systemcall is an exception. When you
+create 10 new directories, all will be created on the same branch.
+And the most-free-space policy selects the one which has most free
+space among the writable branches. The amount of free space will be
+checked by aufs internally, and users can specify its time interval.
+
+The policies for copy-up is more simple,
+top-down-parent is equivalent to the same named on in create policy,
+bottom-up-parent selects the writable branch where the parent dir
+exists and the nearest upper one from the copyup-source,
+bottom-up selects the nearest upper writable branch from the
+copyup-source, regardless the existence of the parent dir.
+
+There are some rules or exceptions to apply these policies.
+- If there is a readonly branch above the policy-selected branch and
+ the parent dir is marked as opaque (a variation of whiteout), or the
+ target (creating) file is whiteout-ed on the upper readonly branch,
+ then the result of the policy is ignored and the target file will be
+ created on the nearest upper writable branch than the readonly branch.
+- If there is a writable branch above the policy-selected branch and
+ the parent dir is marked as opaque or the target file is whiteouted
+ on the branch, then the result of the policy is ignored and the target
+ file will be created on the highest one among the upper writable
+ branches who has diropq or whiteout. In case of whiteout, aufs removes
+ it as usual.
+- link(2) and rename(2) systemcalls are exceptions in every policy.
+ They try selecting the branch where the source exists as possible
+ since copyup a large file will take long time. If it can't be,
+ ie. the branch where the source exists is readonly, then they will
+ follow the copyup policy.
+- There is an exception for rename(2) when the target exists.
+ If the rename target exists, aufs compares the index of the branches
+ where the source and the target exists and selects the higher
+ one. If the selected branch is readonly, then aufs follows the
+ copyup policy.
diff --git a/Documentation/filesystems/aufs/design/06dirren.dot b/Documentation/filesystems/aufs/design/06dirren.dot
new file mode 100644
index 0000000000..2d62bb6dd5
--- /dev/null
+++ b/Documentation/filesystems/aufs/design/06dirren.dot
@@ -0,0 +1,31 @@
+
+// to view this graph, run dot(1) command in GRAPHVIZ.
+
+digraph G {
+node [shape=box];
+whinfo [label="detailed info file\n(lower_brid_root-hinum, h_inum, namelen, old name)"];
+
+node [shape=oval];
+
+aufs_rename -> whinfo [label="store/remove"];
+
+node [shape=oval];
+inode_list [label="h_inum list in branch\ncache"];
+
+node [shape=box];
+whinode [label="h_inum list file"];
+
+node [shape=oval];
+brmgmt [label="br_add/del/mod/umount"];
+
+brmgmt -> inode_list [label="create/remove"];
+brmgmt -> whinode [label="load/store"];
+
+inode_list -> whinode [style=dashed,dir=both];
+
+aufs_rename -> inode_list [label="add/del"];
+
+aufs_lookup -> inode_list [label="search"];
+
+aufs_lookup -> whinfo [label="load/remove"];
+}
diff --git a/Documentation/filesystems/aufs/design/06dirren.txt b/Documentation/filesystems/aufs/design/06dirren.txt
new file mode 100644
index 0000000000..3b80f8659b
--- /dev/null
+++ b/Documentation/filesystems/aufs/design/06dirren.txt
@@ -0,0 +1,102 @@
+
+# Copyright (C) 2017-2019 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Special handling for renaming a directory (DIRREN)
+----------------------------------------------------------------------
+First, let's assume we have a simple usecase.
+
+- /u = /rw + /ro
+- /rw/dirA exists
+- /ro/dirA and /ro/dirA/file exist too
+- there is no dirB on both branches
+- a user issues rename("dirA", "dirB")
+
+Now, what should aufs behave against this rename(2)?
+There are a few possible cases.
+
+A. returns EROFS.
+ since dirA exists on a readonly branch which cannot be renamed.
+B. returns EXDEV.
+ it is possible to copy-up dirA (only the dir itself), but the child
+ entries ("file" in this case) should not be. it must be a bad
+ approach to copy-up recursively.
+C. returns a success.
+ even the branch /ro is readonly, aufs tries renaming it. Obviously it
+ is a violation of aufs' policy.
+D. construct an extra information which indicates that /ro/dirA should
+ be handled as the name of dirB.
+ overlayfs has a similar feature called REDIRECT.
+
+Until now, aufs implements the case B only which returns EXDEV, and
+expects the userspace application behaves like mv(1) which tries
+issueing rename(2) recursively.
+
+A new aufs feature called DIRREN is introduced which implements the case
+D. There are several "extra information" added.
+
+1. detailed info per renamed directory
+ path: /rw/dirB/$AUFS_WH_DR_INFO_PFX.<lower branch-id>
+2. the inode-number list of directories on a branch
+ path: /rw/dirB/$AUFS_WH_DR_BRHINO
+
+The filename of "detailed info per directory" represents the lower
+branch, and its format is
+- a type of the branch id
+ one of these.
+ + uuid (not implemented yet)
+ + fsid
+ + dev
+- the inode-number of the branch root dir
+
+And it contains these info in a single regular file.
+- magic number
+- branch's inode-number of the logically renamed dir
+- the name of the before-renamed dir
+
+The "detailed info per directory" file is created in aufs rename(2), and
+loaded in any lookup.
+The info is considered in lookup for the matching case only. Here
+"matching" means that the root of branch (in the info filename) is same
+to the current looking-up branch. After looking-up the before-renamed
+name, the inode-number is compared. And the matched dentry is used.
+
+The "inode-number list of directories" is a regular file which contains
+simply the inode-numbers on the branch. The file is created or updated
+in removing the branch, and loaded in adding the branch. Its lifetime is
+equal to the branch.
+The list is refered in lookup, and when the current target inode is
+found in the list, the aufs tries loading the "detailed info per
+directory" and get the changed and valid name of the dir.
+
+Theoretically these "extra informaiton" may be able to be put into XATTR
+in the dir inode. But aufs doesn't choose this way because
+1. XATTR may not be supported by the branch (or its configuration)
+2. XATTR may have its size limit.
+3. XATTR may be less easy to convert than a regular file, when the
+ format of the info is changed in the future.
+At the same time, I agree that the regular file approach is much slower
+than XATTR approach. So, in the future, aufs may take the XATTR or other
+better approach.
+
+This DIRREN feature is enabled by aufs configuration, and is activated
+by a new mount option.
+
+For the more complicated case, there is a work with UDBA option, which
+is to dected the direct access to the branches (by-passing aufs) and to
+maintain the cashes in aufs. Since a single cached aufs dentry may
+contains two names, before- and after-rename, the name comparision in
+UDBA handler may not work correctly. In this case, the behaviour will be
+equivalen to udba=reval case.
diff --git a/Documentation/filesystems/aufs/design/06fhsm.txt b/Documentation/filesystems/aufs/design/06fhsm.txt
new file mode 100644
index 0000000000..8b498d0af8
--- /dev/null
+++ b/Documentation/filesystems/aufs/design/06fhsm.txt
@@ -0,0 +1,120 @@
+
+# Copyright (C) 2011-2019 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+
+File-based Hierarchical Storage Management (FHSM)
+----------------------------------------------------------------------
+Hierarchical Storage Management (or HSM) is a well-known feature in the
+storage world. Aufs provides this feature as file-based with multiple
+writable branches, based upon the principle of "Colder, the Lower".
+Here the word "colder" means that the less used files, and "lower" means
+that the position in the order of the stacked branches vertically.
+These multiple writable branches are prioritized, ie. the topmost one
+should be the fastest drive and be used heavily.
+
+o Characters in aufs FHSM story
+- aufs itself and a new branch attribute.
+- a new ioctl interface to move-down and to establish a connection with
+ the daemon ("move-down" is a converse of "copy-up").
+- userspace tool and daemon.
+
+The userspace daemon establishes a connection with aufs and waits for
+the notification. The notified information is very similar to struct
+statfs containing the number of consumed blocks and inodes.
+When the consumed blocks/inodes of a branch exceeds the user-specified
+upper watermark, the daemon activates its move-down process until the
+consumed blocks/inodes reaches the user-specified lower watermark.
+
+The actual move-down is done by aufs based upon the request from
+user-space since we need to maintain the inode number and the internal
+pointer arrays in aufs.
+
+Currently aufs FHSM handles the regular files only. Additionally they
+must not be hard-linked nor pseudo-linked.
+
+
+o Cowork of aufs and the user-space daemon
+ During the userspace daemon established the connection, aufs sends a
+ small notification to it whenever aufs writes something into the
+ writable branch. But it may cost high since aufs issues statfs(2)
+ internally. So user can specify a new option to cache the
+ info. Actually the notification is controlled by these factors.
+ + the specified cache time.
+ + classified as "force" by aufs internally.
+ Until the specified time expires, aufs doesn't send the info
+ except the forced cases. When aufs decide forcing, the info is always
+ notified to userspace.
+ For example, the number of free inodes is generally large enough and
+ the shortage of it happens rarely. So aufs doesn't force the
+ notification when creating a new file, directory and others. This is
+ the typical case which aufs doesn't force.
+ When aufs writes the actual filedata and the files consumes any of new
+ blocks, the aufs forces notifying.
+
+
+o Interfaces in aufs
+- New branch attribute.
+ + fhsm
+ Specifies that the branch is managed by FHSM feature. In other word,
+ participant in the FHSM.
+ When nofhsm is set to the branch, it will not be the source/target
+ branch of the move-down operation. This attribute is set
+ independently from coo and moo attributes, and if you want full
+ FHSM, you should specify them as well.
+- New mount option.
+ + fhsm_sec
+ Specifies a second to suppress many less important info to be
+ notified.
+- New ioctl.
+ + AUFS_CTL_FHSM_FD
+ create a new file descriptor which userspace can read the notification
+ (a subset of struct statfs) from aufs.
+- Module parameter 'brs'
+ It has to be set to 1. Otherwise the new mount option 'fhsm' will not
+ be set.
+- mount helpers /sbin/mount.aufs and /sbin/umount.aufs
+ When there are two or more branches with fhsm attributes,
+ /sbin/mount.aufs invokes the user-space daemon and /sbin/umount.aufs
+ terminates it. As a result of remounting and branch-manipulation, the
+ number of branches with fhsm attribute can be one. In this case,
+ /sbin/mount.aufs will terminate the user-space daemon.
+
+
+Finally the operation is done as these steps in kernel-space.
+- make sure that,
+ + no one else is using the file.
+ + the file is not hard-linked.
+ + the file is not pseudo-linked.
+ + the file is a regular file.
+ + the parent dir is not opaqued.
+- find the target writable branch.
+- make sure the file is not whiteout-ed by the upper (than the target)
+ branch.
+- make the parent dir on the target branch.
+- mutex lock the inode on the branch.
+- unlink the whiteout on the target branch (if exists).
+- lookup and create the whiteout-ed temporary name on the target branch.
+- copy the file as the whiteout-ed temporary name on the target branch.
+- rename the whiteout-ed temporary name to the original name.
+- unlink the file on the source branch.
+- maintain the internal pointer array and the external inode number
+ table (XINO).
+- maintain the timestamps and other attributes of the parent dir and the
+ file.
+
+And of course, in every step, an error may happen. So the operation
+should restore the original file state after an error happens.
diff --git a/Documentation/filesystems/aufs/design/06mmap.txt b/Documentation/filesystems/aufs/design/06mmap.txt
new file mode 100644
index 0000000000..cdd84ea777
--- /dev/null
+++ b/Documentation/filesystems/aufs/design/06mmap.txt
@@ -0,0 +1,72 @@
+
+# Copyright (C) 2005-2019 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+mmap(2) -- File Memory Mapping
+----------------------------------------------------------------------
+In aufs, the file-mapped pages are handled by a branch fs directly, no
+interaction with aufs. It means aufs_mmap() calls the branch fs's
+->mmap().
+This approach is simple and good, but there is one problem.
+Under /proc, several entries show the mmapped files by its path (with
+device and inode number), and the printed path will be the path on the
+branch fs's instead of virtual aufs's.
+This is not a problem in most cases, but some utilities lsof(1) (and its
+user) may expect the path on aufs.
+
+To address this issue, aufs adds a new member called vm_prfile in struct
+vm_area_struct (and struct vm_region). The original vm_file points to
+the file on the branch fs in order to handle everything correctly as
+usual. The new vm_prfile points to a virtual file in aufs, and the
+show-functions in procfs refers to vm_prfile if it is set.
+Also we need to maintain several other places where touching vm_file
+such like
+- fork()/clone() copies vma and the reference count of vm_file is
+ incremented.
+- merging vma maintains the ref count too.
+
+This is not a good approach. It just fakes the printed path. But it
+leaves all behaviour around f_mapping unchanged. This is surely an
+advantage.
+Actually aufs had adopted another complicated approach which calls
+generic_file_mmap() and handles struct vm_operations_struct. In this
+approach, aufs met a hard problem and I could not solve it without
+switching the approach.
+
+There may be one more another approach which is
+- bind-mount the branch-root onto the aufs-root internally
+- grab the new vfsmount (ie. struct mount)
+- lazy-umount the branch-root internally
+- in open(2) the aufs-file, open the branch-file with the hidden
+ vfsmount (instead of the original branch's vfsmount)
+- ideally this "bind-mount and lazy-umount" should be done atomically,
+ but it may be possible from userspace by the mount helper.
+
+Adding the internal hidden vfsmount and using it in opening a file, the
+file path under /proc will be printed correctly. This approach looks
+smarter, but is not possible I am afraid.
+- aufs-root may be bind-mount later. when it happens, another hidden
+ vfsmount will be required.
+- it is hard to get the chance to bind-mount and lazy-umount
+ + in kernel-space, FS can have vfsmount in open(2) via
+ file->f_path, and aufs can know its vfsmount. But several locks are
+ already acquired, and if aufs tries to bind-mount and lazy-umount
+ here, then it may cause a deadlock.
+ + in user-space, bind-mount doesn't invoke the mount helper.
+- since /proc shows dev and ino, aufs has to give vma these info. it
+ means a new member vm_prinode will be necessary. this is essentially
+ equivalent to vm_prfile described above.
+
+I have to give up this "looks-smater" approach.
diff --git a/Documentation/filesystems/aufs/design/06xattr.txt b/Documentation/filesystems/aufs/design/06xattr.txt
new file mode 100644
index 0000000000..edd7553f32
--- /dev/null
+++ b/Documentation/filesystems/aufs/design/06xattr.txt
@@ -0,0 +1,96 @@
+
+# Copyright (C) 2014-2019 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+
+Listing XATTR/EA and getting the value
+----------------------------------------------------------------------
+For the inode standard attributes (owner, group, timestamps, etc.), aufs
+shows the values from the topmost existing file. This behaviour is good
+for the non-dir entries since the bahaviour exactly matches the shown
+information. But for the directories, aufs considers all the same named
+entries on the lower branches. Which means, if one of the lower entry
+rejects readdir call, then aufs returns an error even if the topmost
+entry allows it. This behaviour is necessary to respect the branch fs's
+security, but can make users confused since the user-visible standard
+attributes don't match the behaviour.
+To address this issue, aufs has a mount option called dirperm1 which
+checks the permission for the topmost entry only, and ignores the lower
+entry's permission.
+
+A similar issue can happen around XATTR.
+getxattr(2) and listxattr(2) families behave as if dirperm1 option is
+always set. Otherwise these very unpleasant situation would happen.
+- listxattr(2) may return the duplicated entries.
+- users may not be able to remove or reset the XATTR forever,
+
+
+XATTR/EA support in the internal (copy,move)-(up,down)
+----------------------------------------------------------------------
+Generally the extended attributes of inode are categorized as these.
+- "security" for LSM and capability.
+- "system" for posix ACL, 'acl' mount option is required for the branch
+ fs generally.
+- "trusted" for userspace, CAP_SYS_ADMIN is required.
+- "user" for userspace, 'user_xattr' mount option is required for the
+ branch fs generally.
+
+Moreover there are some other categories. Aufs handles these rather
+unpopular categories as the ordinary ones, ie. there is no special
+condition nor exception.
+
+In copy-up, the support for XATTR on the dst branch may differ from the
+src branch. In this case, the copy-up operation will get an error and
+the original user operation which triggered the copy-up will fail. It
+can happen that even all copy-up will fail.
+When both of src and dst branches support XATTR and if an error occurs
+during copying XATTR, then the copy-up should fail obviously. That is a
+good reason and aufs should return an error to userspace. But when only
+the src branch support that XATTR, aufs should not return an error.
+For example, the src branch supports ACL but the dst branch doesn't
+because the dst branch may natively un-support it or temporary
+un-support it due to "noacl" mount option. Of course, the dst branch fs
+may NOT return an error even if the XATTR is not supported. It is
+totally up to the branch fs.
+
+Anyway when the aufs internal copy-up gets an error from the dst branch
+fs, then aufs tries removing the just copied entry and returns the error
+to the userspace. The worst case of this situation will be all copy-up
+will fail.
+
+For the copy-up operation, there two basic approaches.
+- copy the specified XATTR only (by category above), and return the
+ error unconditionally if it happens.
+- copy all XATTR, and ignore the error on the specified category only.
+
+In order to support XATTR and to implement the correct behaviour, aufs
+chooses the latter approach and introduces some new branch attributes,
+"icexsec", "icexsys", "icextr", "icexusr", and "icexoth".
+They correspond to the XATTR namespaces (see above). Additionally, to be
+convenient, "icex" is also provided which means all "icex*" attributes
+are set (here the word "icex" stands for "ignore copy-error on XATTR").
+
+The meaning of these attributes is to ignore the error from setting
+XATTR on that branch.
+Note that aufs tries copying all XATTR unconditionally, and ignores the
+error from the dst branch according to the specified attributes.
+
+Some XATTR may have its default value. The default value may come from
+the parent dir or the environment. If the default value is set at the
+file creating-time, it will be overwritten by copy-up.
+Some contradiction may happen I am afraid.
+Do we need another attribute to stop copying XATTR? I am unsure. For
+now, aufs implements the branch attributes to ignore the error.
diff --git a/Documentation/filesystems/aufs/design/07export.txt b/Documentation/filesystems/aufs/design/07export.txt
new file mode 100644
index 0000000000..9b983f3dd7
--- /dev/null
+++ b/Documentation/filesystems/aufs/design/07export.txt
@@ -0,0 +1,58 @@
+
+# Copyright (C) 2005-2019 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Export Aufs via NFS
+----------------------------------------------------------------------
+Here is an approach.
+- like xino/xib, add a new file 'xigen' which stores aufs inode
+ generation.
+- iget_locked(): initialize aufs inode generation for a new inode, and
+ store it in xigen file.
+- destroy_inode(): increment aufs inode generation and store it in xigen
+ file. it is necessary even if it is not unlinked, because any data of
+ inode may be changed by UDBA.
+- encode_fh(): for a root dir, simply return FILEID_ROOT. otherwise
+ build file handle by
+ + branch id (4 bytes)
+ + superblock generation (4 bytes)
+ + inode number (4 or 8 bytes)
+ + parent dir inode number (4 or 8 bytes)
+ + inode generation (4 bytes))
+ + return value of exportfs_encode_fh() for the parent on a branch (4
+ bytes)
+ + file handle for a branch (by exportfs_encode_fh())
+- fh_to_dentry():
+ + find the index of a branch from its id in handle, and check it is
+ still exist in aufs.
+ + 1st level: get the inode number from handle and search it in cache.
+ + 2nd level: if not found in cache, get the parent inode number from
+ the handle and search it in cache. and then open the found parent
+ dir, find the matching inode number by vfs_readdir() and get its
+ name, and call lookup_one_len() for the target dentry.
+ + 3rd level: if the parent dir is not cached, call
+ exportfs_decode_fh() for a branch and get the parent on a branch,
+ build a pathname of it, convert it a pathname in aufs, call
+ path_lookup(). now aufs gets a parent dir dentry, then handle it as
+ the 2nd level.
+ + to open the dir, aufs needs struct vfsmount. aufs keeps vfsmount
+ for every branch, but not itself. to get this, (currently) aufs
+ searches in current->nsproxy->mnt_ns list. it may not be a good
+ idea, but I didn't get other approach.
+ + test the generation of the gotten inode.
+- every inode operation: they may get EBUSY due to UDBA. in this case,
+ convert it into ESTALE for NFSD.
+- readdir(): call lockdep_on/off() because filldir in NFSD calls
+ lookup_one_len(), vfs_getattr(), encode_fh() and others.
diff --git a/Documentation/filesystems/aufs/design/08shwh.txt b/Documentation/filesystems/aufs/design/08shwh.txt
new file mode 100644
index 0000000000..647a86a65d
--- /dev/null
+++ b/Documentation/filesystems/aufs/design/08shwh.txt
@@ -0,0 +1,52 @@
+
+# Copyright (C) 2005-2019 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Show Whiteout Mode (shwh)
+----------------------------------------------------------------------
+Generally aufs hides the name of whiteouts. But in some cases, to show
+them is very useful for users. For instance, creating a new middle layer
+(branch) by merging existing layers.
+
+(borrowing aufs1 HOW-TO from a user, Michael Towers)
+When you have three branches,
+- Bottom: 'system', squashfs (underlying base system), read-only
+- Middle: 'mods', squashfs, read-only
+- Top: 'overlay', ram (tmpfs), read-write
+
+The top layer is loaded at boot time and saved at shutdown, to preserve
+the changes made to the system during the session.
+When larger changes have been made, or smaller changes have accumulated,
+the size of the saved top layer data grows. At this point, it would be
+nice to be able to merge the two overlay branches ('mods' and 'overlay')
+and rewrite the 'mods' squashfs, clearing the top layer and thus
+restoring save and load speed.
+
+This merging is simplified by the use of another aufs mount, of just the
+two overlay branches using the 'shwh' option.
+# mount -t aufs -o ro,shwh,br:/livesys/overlay=ro+wh:/livesys/mods=rr+wh \
+ aufs /livesys/merge_union
+
+A merged view of these two branches is then available at
+/livesys/merge_union, and the new feature is that the whiteouts are
+visible!
+Note that in 'shwh' mode the aufs mount must be 'ro', which will disable
+writing to all branches. Also the default mode for all branches is 'ro'.
+It is now possible to save the combined contents of the two overlay
+branches to a new squashfs, e.g.:
+# mksquashfs /livesys/merge_union /path/to/newmods.squash
+
+This new squashfs archive can be stored on the boot device and the
+initramfs will use it to replace the old one at the next boot.
diff --git a/Documentation/filesystems/aufs/design/10dynop.txt b/Documentation/filesystems/aufs/design/10dynop.txt
new file mode 100644
index 0000000000..13e8583f2b
--- /dev/null
+++ b/Documentation/filesystems/aufs/design/10dynop.txt
@@ -0,0 +1,47 @@
+
+# Copyright (C) 2010-2019 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Dynamically customizable FS operations
+----------------------------------------------------------------------
+Generally FS operations (struct inode_operations, struct
+address_space_operations, struct file_operations, etc.) are defined as
+"static const", but it never means that FS have only one set of
+operation. Some FS have multiple sets of them. For instance, ext2 has
+three sets, one for XIP, for NOBH, and for normal.
+Since aufs overrides and redirects these operations, sometimes aufs has
+to change its behaviour according to the branch FS type. More importantly
+VFS acts differently if a function (member in the struct) is set or
+not. It means aufs should have several sets of operations and select one
+among them according to the branch FS definition.
+
+In order to solve this problem and not to affect the behaviour of VFS,
+aufs defines these operations dynamically. For instance, aufs defines
+dummy direct_IO function for struct address_space_operations, but it may
+not be set to the address_space_operations actually. When the branch FS
+doesn't have it, aufs doesn't set it to its address_space_operations
+while the function definition itself is still alive. So the behaviour
+itself will not change, and it will return an error when direct_IO is
+not set.
+
+The lifetime of these dynamically generated operation object is
+maintained by aufs branch object. When the branch is removed from aufs,
+the reference counter of the object is decremented. When it reaches
+zero, the dynamically generated operation object will be freed.
+
+This approach is designed to support AIO (io_submit), Direct I/O and
+XIP (DAX) mainly.
+Currently this approach is applied to address_space_operations for
+regular files only.
diff --git a/Documentation/power/power-sequence/design.rst b/Documentation/power/power-sequence/design.rst
new file mode 100644
index 0000000000..554608e5f3
--- /dev/null
+++ b/Documentation/power/power-sequence/design.rst
@@ -0,0 +1,54 @@
+====================================
+Power Sequence Library
+====================================
+
+:Date: Feb, 2017
+:Author: Peter Chen <peter.chen@nxp.com>
+
+
+Introduction
+============
+
+We have an well-known problem that the device needs to do a power
+sequence before it can be recognized by related host, the typical
+examples are hard-wired mmc devices and usb devices. The host controller
+can't know what kinds of this device is in its bus if the power
+sequence has not done, since the related devices driver's probe calling
+is determined by runtime according to eunumeration results. Besides,
+the devices may have custom power sequence, so the power sequence library
+which is independent with the devices is needed.
+
+Design
+============
+
+The power sequence library includes the core file and customer power
+sequence library. The core file exports interfaces are called by
+host controller driver for power sequence and customer power sequence
+library files to register its power sequence instance to global
+power sequence list. The custom power sequence library creates power
+sequence instance and implement custom power sequence.
+
+Since the power sequence describes hardware design, the description is
+located at board description file, eg, device tree dts file. And
+a specific power sequence belongs to device, so its description
+is under the device node, please refer to:
+Documentation/devicetree/bindings/power/pwrseq/pwrseq-generic.txt
+
+Custom power sequence library allocates one power sequence instance at
+bootup periods using postcore_initcall, this static allocated instance is
+used to compare with device-tree (DT) node to see if this library can be
+used for the node or not. When the result is matched, the core API will
+try to get resourses (->get, implemented at each library) for power
+sequence, if all resources are got, it will try to allocate another
+instance for next possible request from host driver.
+
+Then, the host controller driver can carry out power sequence on for this
+DT node, the library will do corresponding operations, like open clocks,
+toggle gpio, etc. The power sequence off routine will close and free the
+resources, and is called when the parent is removed. And the power
+sequence suspend and resume routine can be called at host driver's
+suspend and resume routine if needed.
+
+The exported interfaces
+.. kernel-doc:: drivers/power/pwrseq/core.c
+ :export:
diff --git a/Documentation/tp_smapi.txt b/Documentation/tp_smapi.txt
new file mode 100644
index 0000000000..a249678a88
--- /dev/null
+++ b/Documentation/tp_smapi.txt
@@ -0,0 +1,275 @@
+tp_smapi version 0.42
+IBM ThinkPad hardware functions driver
+
+Author: Shem Multinymous <multinymous@gmail.com>
+Project: http://sourceforge.net/projects/tpctl
+Wiki: http://thinkwiki.org/wiki/tp_smapi
+List: linux-thinkpad@linux-thinkpad.org
+ (http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad)
+
+Description
+-----------
+
+ThinkPad laptops include a proprietary interface called SMAPI BIOS
+(System Management Application Program Interface) which provides some
+hardware control functionality that is not accessible by other means.
+
+This driver exposes some features of the SMAPI BIOS through a sysfs
+interface. It is suitable for newer models, on which SMAPI is invoked
+through IO port writes. Older models use a different SMAPI interface;
+for those, try the "thinkpad" module from the "tpctl" package.
+
+WARNING:
+This driver uses undocumented features and direct hardware access.
+It thus cannot be guaranteed to work, and may cause arbitrary damage
+(especially on models it wasn't tested on).
+
+
+Module parameters
+-----------------
+
+thinkpad_ec module:
+ force_io=1 lets thinkpad_ec load on some recent ThinkPad models
+ (e.g., T400 and T500) whose BIOS's ACPI DSDT reserves the ports we need.
+tp_smapi module:
+ debug=1 enables verbose dmesg output.
+
+
+Usage
+-----
+
+Control of battery charging thresholds (in percents of current full charge
+capacity):
+
+# echo 40 > /sys/devices/platform/smapi/BAT0/start_charge_thresh
+# echo 70 > /sys/devices/platform/smapi/BAT0/stop_charge_thresh
+# cat /sys/devices/platform/smapi/BAT0/*_charge_thresh
+
+ (This is useful since Li-Ion batteries wear out much faster at very
+ high or low charge levels. The driver will also keeps the thresholds
+ across suspend-to-disk with AC disconnected; this isn't done
+ automatically by the hardware.)
+
+Inhibiting battery charging for 17 minutes (overrides thresholds):
+
+# echo 17 > /sys/devices/platform/smapi/BAT0/inhibit_charge_minutes
+# echo 0 > /sys/devices/platform/smapi/BAT0/inhibit_charge_minutes # stop
+# cat /sys/devices/platform/smapi/BAT0/inhibit_charge_minutes
+
+ (This can be used to control which battery is charged when using an
+ Ultrabay battery.)
+
+Forcing battery discharging even if AC power available:
+
+# echo 1 > /sys/devices/platform/smapi/BAT0/force_discharge # start discharge
+# echo 0 > /sys/devices/platform/smapi/BAT0/force_discharge # stop discharge
+# cat /sys/devices/platform/smapi/BAT0/force_discharge
+
+ (When AC is connected, forced discharging will automatically stop
+ when battery is fully depleted -- this is useful for calibration.
+ Also, this attribute can be used to control which battery is discharged
+ when both a system battery and an Ultrabay battery are connected.)
+
+Misc read-only battery status attributes (see note about HDAPS below):
+
+/sys/devices/platform/smapi/BAT0/installed # 0 or 1
+/sys/devices/platform/smapi/BAT0/state # idle/charging/discharging
+/sys/devices/platform/smapi/BAT0/cycle_count # integer counter
+/sys/devices/platform/smapi/BAT0/current_now # instantaneous current
+/sys/devices/platform/smapi/BAT0/current_avg # last minute average
+/sys/devices/platform/smapi/BAT0/power_now # instantaneous power
+/sys/devices/platform/smapi/BAT0/power_avg # last minute average
+/sys/devices/platform/smapi/BAT0/last_full_capacity # in mWh
+/sys/devices/platform/smapi/BAT0/remaining_percent # remaining percent of energy (set by calibration)
+/sys/devices/platform/smapi/BAT0/remaining_percent_error # error range of remaing_percent (not reset by calibration)
+/sys/devices/platform/smapi/BAT0/remaining_running_time # in minutes, by last minute average power
+/sys/devices/platform/smapi/BAT0/remaining_running_time_now # in minutes, by instantenous power
+/sys/devices/platform/smapi/BAT0/remaining_charging_time # in minutes
+/sys/devices/platform/smapi/BAT0/remaining_capacity # in mWh
+/sys/devices/platform/smapi/BAT0/design_capacity # in mWh
+/sys/devices/platform/smapi/BAT0/voltage # in mV
+/sys/devices/platform/smapi/BAT0/design_voltage # in mV
+/sys/devices/platform/smapi/BAT0/charging_max_current # max charging current
+/sys/devices/platform/smapi/BAT0/charging_max_voltage # max charging voltage
+/sys/devices/platform/smapi/BAT0/group{0,1,2,3}_voltage # see below
+/sys/devices/platform/smapi/BAT0/manufacturer # string
+/sys/devices/platform/smapi/BAT0/model # string
+/sys/devices/platform/smapi/BAT0/barcoding # string
+/sys/devices/platform/smapi/BAT0/chemistry # string
+/sys/devices/platform/smapi/BAT0/serial # integer
+/sys/devices/platform/smapi/BAT0/manufacture_date # YYYY-MM-DD
+/sys/devices/platform/smapi/BAT0/first_use_date # YYYY-MM-DD
+/sys/devices/platform/smapi/BAT0/temperature # in milli-Celsius
+/sys/devices/platform/smapi/BAT0/dump # see below
+/sys/devices/platform/smapi/ac_connected # 0 or 1
+
+The BAT0/group{0,1,2,3}_voltage attribute refers to the separate cell groups
+in each battery. For example, on the ThinkPad 600, X3x, T4x and R5x models,
+the battery contains 3 cell groups in series, where each group consisting of 2
+or 3 cells connected in parallel. The voltage of each group is given by these
+attributes, and their sum (roughly) equals the "voltage" attribute.
+(The effective performance of the battery is determined by the weakest group,
+i.e., the one those voltage changes most rapidly during dis/charging.)
+
+The "BAT0/dump" attribute gives a a hex dump of the raw status data, which
+contains additional data now in the above (if you can figure it out). Some
+unused values are autodetected and replaced by "--":
+
+In all of the above, replace BAT0 with BAT1 to address the 2nd battery (e.g.
+in the UltraBay).
+
+
+Raw SMAPI calls:
+
+/sys/devices/platform/smapi/smapi_request
+This performs raw SMAPI calls. It uses a bad interface that cannot handle
+multiple simultaneous access. Don't touch it, it's for development only.
+If you did touch it, you would so something like
+# echo '211a 100 0 0' > /sys/devices/platform/smapi/smapi_request
+# cat /sys/devices/platform/smapi/smapi_request
+and notice that in the output "211a 34b b2 0 0 0 'OK'", the "4b" in the 2nd
+value, converted to decimal is 75: the current charge stop threshold.
+
+
+Model-specific status
+---------------------
+
+Works (at least partially) on the following ThinkPad model:
+* A30
+* G41
+* R40, R50p, R51, R52
+* T23, T40, T40p, T41, T41p, T42, T42p, T43, T43p, T60, T61, T400, T410, T420 (partially)
+* X24, X31, X32, X40, X41, X60, X61, X200, X201, X220 (partially)
+* Z60t, Z61m
+
+Does not work on:
+* X230 and newer
+* T430 and newer
+* Any ThinkPad Edge
+* Any ThinkPad Yoga
+* Any ThinkPad L series
+* Any ThinkPad P series
+
+Not all functions are available on all models; for detailed status, see:
+ http://thinkwiki.org/wiki/tp_smapi
+
+Please report success/failure by e-mail or on the Wiki.
+If you get a "not implemented" or "not supported" message, your laptop
+probably just can't do that (at least not via the SMAPI BIOS).
+For negative reports, follow the bug reporting guidelines below.
+If you send me the necessary technical data (i.e., SMAPI function
+interfaces), I will support additional models.
+
+
+Additional HDAPS features
+-------------------------
+
+The modified hdaps driver has several improvements on the one in mainline
+(beyond resolving the conflict with thinkpad_ec and tp_smapi):
+
+- Fixes reliability and improves support for recent ThinkPad models
+ (especially *60 and newer). Unlike the mainline driver, the modified hdaps
+ correctly follows the Embedded Controller communication protocol.
+
+- Extends the "invert" parameter to cover all possible axis orientations.
+ The possible values are as follows.
+ Let X,Y denote the hardware readouts.
+ Let R denote the laptop's roll (tilt left/right).
+ Let P denote the laptop's pitch (tilt forward/backward).
+ invert=0: R= X P= Y (same as mainline)
+ invert=1: R=-X P=-Y (same as mainline)
+ invert=2: R=-X P= Y (new)
+ invert=3: R= X P=-Y (new)
+ invert=4: R= Y P= X (new)
+ invert=5: R=-Y P=-X (new)
+ invert=6: R=-Y P= X (new)
+ invert=7: R= Y P=-X (new)
+ It's probably easiest to just try all 8 possibilities and see which yields
+ correct results (e.g., in the hdaps-gl visualisation).
+
+- Adds a whitelist which automatically sets the correct axis orientation for
+ some models. If the value for your model is wrong or missing, you can override
+ it using the "invert" parameter. Please also update the tables at
+ http://www.thinkwiki.org/wiki/tp_smapi and
+ http://www.thinkwiki.org/wiki/List_of_DMI_IDs
+ and submit a patch for the whitelist in hdaps.c.
+
+- Provides new attributes:
+ /sys/devices/platform/hdaps/sampling_rate:
+ This determines the frequency at which the host queries the embedded
+ controller for accelerometer data (and informs the hdaps input devices).
+ Default=50.
+ /sys/devices/platform/hdaps/oversampling_ratio:
+ When set to X, the embedded controller is told to do physical accelerometer
+ measurements at a rate that is X times higher than the rate at which
+ the driver reads those measurements (i.e., X*sampling_rate). This
+ makes the readouts from the embedded controller more fresh, and is also
+ useful for the running average filter (see next). Default=5
+ /sys/devices/platform/hdaps/running_avg_filter_order:
+ When set to X, reported readouts will be the average of the last X physical
+ accelerometer measurements. Current firmware allows 1<=X<=8. Setting to a
+ high value decreases readout fluctuations. The averaging is handled by the
+ embedded controller, so no CPU resources are used. Higher values make the
+ readouts smoother, since it averages out both sensor noise (good) and abrupt
+ changes (bad). Default=2.
+
+- Provides a second input device, which publishes the raw accelerometer
+ measurements (without the fuzzing needed for joystick emulation). This input
+ device can be matched by a udev rule such as the following (all on one line):
+ KERNEL=="event[0-9]*", ATTRS{phys}=="hdaps/input1",
+ ATTRS{modalias}=="input:b0019v1014p5054e4801-*",
+ SYMLINK+="input/hdaps/accelerometer-event
+
+A new version of the hdapsd userspace daemon, which uses the input device
+interface instead of polling sysfs, is available seprately. Using this reduces
+the total interrupts per second generated by hdaps+hdapsd (on tickless kernels)
+to 50, down from a value that fluctuates between 50 and 100. Set the
+sampling_rate sysfs attribute to a lower value to further reduce interrupts,
+at the expense of response latency.
+
+Licensing note: all my changes to the HDAPS driver are licensed under the
+GPL version 2 or, at your option and to the extent allowed by derivation from
+prior works, any later version. My version of hdaps is derived work from the
+mainline version, which at the time of writing is available only under
+GPL version 2.
+
+Bug reporting
+-------------
+
+Mail <multinymous@gmail.com>. Please include:
+* Details about your model,
+* Relevant "dmesg" output. Make sure thinkpad_ec and tp_smapi are loaded with
+ the "debug=1" parameter (e.g., use "make load HDAPS=1 DEBUG=1").
+* Output of "dmidecode | grep -C5 Product"
+* Does the failed functionality works under Windows?
+
+
+More about SMAPI
+----------------
+
+For hints about what may be possible via the SMAPI BIOS and how, see:
+
+* IBM Technical Reference Manual for the ThinkPad 770
+ (http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=PFAN-3TUQQD)
+* Exported symbols in PWRMGRIF.DLL or TPPWRW32.DLL (e.g., use "objdump -x").
+* drivers/char/mwave/smapi.c in the Linux kernel tree.*
+* The "thinkpad" SMAPI module (http://tpctl.sourceforge.net).
+* The SMAPI_* constants in tp_smapi.c.
+
+Note that in the above Technical Reference and in the "thinkpad" module,
+SMAPI is invoked through a function call to some physical address. However,
+the interface used by tp_smapi and the above mwave drive, and apparently
+required by newer ThinkPad, is different: you set the parameters up in the
+CPU's registers and write to ports 0xB2 (the APM control port) and 0x4F; this
+triggers an SMI (System Management Interrupt), causing the CPU to enter
+SMM (System Management Mode) and run the BIOS firmware; the results are
+returned in the CPU's registers. It is not clear what is the relation between
+the two variants of SMAPI, though the assignment of error codes seems to be
+similar.
+
+In addition, the embedded controller on ThinkPad laptops has a non-standard
+interface at IO ports 0x1600-0x161F (mapped to LCP channel 3 of the H8S chip).
+The interface provides various system management services (currently known:
+battery information and accelerometer readouts). For more information see the
+thinkpad_ec module and the H8S hardware documentation:
+http://documentation.renesas.com/eng/products/mpumcu/rej09b0300_2140bhm.pdf
diff --git a/MAINTAINERS b/MAINTAINERS
index a50e97a63b..e0b5d32094 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2822,6 +2822,19 @@ F: include/linux/audit.h
F: include/uapi/linux/audit.h
F: kernel/audit*
+AUFS (advanced multi layered unification filesystem) FILESYSTEM
+M: "J. R. Okajima" <hooanon05g@gmail.com>
+L: aufs-users@lists.sourceforge.net (members only)
+L: linux-unionfs@vger.kernel.org
+W: http://aufs.sourceforge.net
+T: git://github.com/sfjro/aufs4-linux.git
+S: Supported
+F: Documentation/filesystems/aufs/
+F: Documentation/ABI/testing/debugfs-aufs
+F: Documentation/ABI/testing/sysfs-aufs
+F: fs/aufs/
+F: include/uapi/linux/aufs_type.h
+
AUXILIARY DISPLAY DRIVERS
M: Miguel Ojeda Sandonis <miguel.ojeda.sandonis@gmail.com>
S: Maintained
@@ -6082,6 +6095,11 @@ F: include/trace/events/mdio.h
F: include/uapi/linux/mdio.h
F: include/uapi/linux/mii.h
+EXFAT FILE SYSTEM
+M: Valdis Kletnieks <valdis.kletnieks@vt.edu>
+S: Maintained
+F: fs/exfat/
+
EXT2 FILE SYSTEM
M: Jan Kara <jack@suse.com>
L: linux-ext4@vger.kernel.org
@@ -12884,6 +12902,15 @@ F: drivers/firmware/psci/
F: include/linux/psci.h
F: include/uapi/linux/psci.h
+POWER SEQUENCE LIBRARY
+M: Peter Chen <Peter.Chen@nxp.com>
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb.git
+L: linux-pm@vger.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/power/pwrseq/
+F: drivers/power/pwrseq/
+F: include/linux/power/pwrseq.h
+
POWER SUPPLY CLASS/SUBSYSTEM and DRIVERS
M: Sebastian Reichel <sre@kernel.org>
L: linux-pm@vger.kernel.org
diff --git a/Makefile b/Makefile
index 80e59a3c40..ed3ce4bfda 100644
--- a/Makefile
+++ b/Makefile
@@ -2,8 +2,8 @@
VERSION = 5
PATCHLEVEL = 3
SUBLEVEL = 1
-EXTRAVERSION = -gnu
-NAME = Bobtail Squid
+EXTRAVERSION = -gnu-pck1
+NAME = The Beauty and the Bug
# *DOCUMENTATION*
# To see a list of typical targets execute "make help"
@@ -703,8 +703,12 @@ KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
KBUILD_CFLAGS += -Os
else
+ifdef CONFIG_CC_OPTIMIZE_HARDER
+KBUILD_CFLAGS += -O3
+else
KBUILD_CFLAGS += -O2
endif
+endif
ifdef CONFIG_CC_DISABLE_WARN_MAYBE_UNINITIALIZED
KBUILD_CFLAGS += -Wno-maybe-uninitialized
diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
index 0b3cd7a33a..87a8b8db34 100644
--- a/arch/arm/boot/Makefile
+++ b/arch/arm/boot/Makefile
@@ -29,6 +29,10 @@ export ZRELADDR INITRD_PHYS PARAMS_PHYS
targets := Image zImage xipImage bootpImage uImage
+ifeq ($(CONFIG_OF_OVERLAY),y)
+DTC_FLAGS += -@
+endif
+
ifeq ($(CONFIG_XIP_KERNEL),y)
cmd_deflate_xip_data = $(CONFIG_SHELL) -c \
diff --git a/arch/arm/boot/compressed/atags_to_fdt.c b/arch/arm/boot/compressed/atags_to_fdt.c
index 330cd3c2ea..82f3802ff6 100644
--- a/arch/arm/boot/compressed/atags_to_fdt.c
+++ b/arch/arm/boot/compressed/atags_to_fdt.c
@@ -19,7 +19,7 @@ static int node_offset(void *fdt, const char *node_path)
}
static int setprop(void *fdt, const char *node_path, const char *property,
- uint32_t *val_array, int size)
+ void *val_array, int size)
{
int offset = node_offset(fdt, node_path);
if (offset < 0)
@@ -203,6 +203,12 @@ int atags_to_fdt(void *atag_list, void *fdt, int total_space)
hex_str(serno, atag->u.serialnr.high);
hex_str(serno+8, atag->u.serialnr.low);
setprop_string(fdt, "/", "serial-number", serno);
+ } else if (atag->hdr.tag == ATAG_MV_UBOOT) {
+ /* This ATAG provides up to 4 MAC addresses */
+ setprop(fdt, "eth0", "mac-address", atag->u.mv_uboot.macAddr[0], 6);
+ setprop(fdt, "eth1", "mac-address", atag->u.mv_uboot.macAddr[1], 6);
+ setprop(fdt, "eth2", "mac-address", atag->u.mv_uboot.macAddr[2], 6);
+ setprop(fdt, "eth3", "mac-address", atag->u.mv_uboot.macAddr[3], 6);
}
}
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 9159fa2cea..d1e04ca0ab 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1,4 +1,9 @@
# SPDX-License-Identifier: GPL-2.0
+
+ifeq ($(CONFIG_OF_OVERLAY),y)
+DTC_FLAGS += -@
+endif
+
dtb-$(CONFIG_ARCH_ALPINE) += \
alpine-db.dtb
dtb-$(CONFIG_MACH_ARTPEC6) += \
@@ -577,9 +582,11 @@ dtb-$(CONFIG_SOC_IMX6UL) += \
imx6ul-tx6ul-0010.dtb \
imx6ul-tx6ul-0011.dtb \
imx6ul-tx6ul-mainboard.dtb \
+ imx6ul-usbarmory.dtb \
imx6ull-14x14-evk.dtb \
imx6ull-colibri-eval-v3.dtb \
imx6ull-colibri-wifi-eval-v3.dtb \
+ imx6ull-usbarmory.dtb \
imx6ulz-14x14-evk.dtb
dtb-$(CONFIG_SOC_IMX7D) += \
imx7d-cl-som-imx7.dtb \
@@ -732,6 +739,11 @@ dtb-$(CONFIG_SOC_AM33XX) += \
am335x-base0033.dtb \
am335x-bone.dtb \
am335x-boneblack.dtb \
+ am335x-bonegreen-wireless-uboot-univ.dtb \
+ am335x-boneblack-uboot-univ.dtb \
+ am335x-bone-uboot-univ.dtb \
+ am335x-boneblack-uboot.dtb \
+ am335x-abbbi.dtb \
am335x-boneblack-wireless.dtb \
am335x-boneblue.dtb \
am335x-bonegreen.dtb \
@@ -762,6 +774,7 @@ dtb-$(CONFIG_ARCH_OMAP4) += \
omap4-duovero-parlor.dtb \
omap4-kc1.dtb \
omap4-panda.dtb \
+ omap4-panda-es-b3.dtb \
omap4-panda-a4.dtb \
omap4-panda-es.dtb \
omap4-sdp.dtb \
@@ -1206,6 +1219,7 @@ dtb-$(CONFIG_MACH_ARMADA_370) += \
armada-370-db.dtb \
armada-370-dlink-dns327l.dtb \
armada-370-mirabox.dtb \
+ armada-370-smileplug.dtb \
armada-370-netgear-rn102.dtb \
armada-370-netgear-rn104.dtb \
armada-370-rd.dtb \
diff --git a/arch/arm/boot/dts/am335x-abbbi.dts b/arch/arm/boot/dts/am335x-abbbi.dts
new file mode 100644
index 0000000000..870ce85674
--- /dev/null
+++ b/arch/arm/boot/dts/am335x-abbbi.dts
@@ -0,0 +1,164 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
+ * Copyright 2015 Konsulko Group
+ */
+/dts-v1/;
+
+#include "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+
+/ {
+ model = "Arrow BeagleBone Black Industrial";
+ compatible = "arrow,am335x-abbbi", "ti,am335x-bone", "ti,am33xx";
+
+ chosen {
+ base_dtb = "am335x-abbbi.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
+};
+
+&ldo3_reg {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+};
+
+&mmc1 {
+ vmmc-supply = <&vmmcsd_fixed>;
+};
+
+&mmc2 {
+ vmmc-supply = <&vmmcsd_fixed>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&emmc_pins>;
+ bus-width = <8>;
+ status = "okay";
+};
+
+&am33xx_pinmux {
+ adi_hdmi_bbbi_pins: adi_hdmi_bbbi_pins {
+ pinctrl-single,pins = <
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA0, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA1, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA2, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA3, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA4, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA5, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA6, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA7, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA8, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA9, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA10, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA11, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA12, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA13, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA14, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_DATA15, PIN_OUTPUT, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_VSYNC, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_HSYNC, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_PCLK, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_LCD_AC_BIAS_EN, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+ >;
+ };
+
+ mcasp0_pins: mcasp0_pins {
+ pinctrl-single,pins = <
+ AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKX, PIN_INPUT_PULLUP, MUX_MODE0) /* mcasp0_ahcklx.mcasp0_ahclkx */
+ AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKR, PIN_OUTPUT_PULLDOWN, MUX_MODE2) /* mcasp0_ahclkr.mcasp0_axr2*/
+ AM33XX_PADCONF(AM335X_PIN_MCASP0_FSX, PIN_OUTPUT_PULLUP, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MCASP0_ACLKX, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_GPMC_A11, PIN_OUTPUT_PULLDOWN, MUX_MODE7) /* gpmc_a11.GPIO1_27 */
+ >;
+ };
+};
+
+&lcdc {
+ status = "okay";
+
+ /* If you want to get 24 bit RGB and 16 BGR mode instead of
+ * current 16 bit RGB and 24 BGR modes, set the propety
+ * below to "crossed" and uncomment the video-ports -property
+ * in tda19988 node.
+ */
+ blue-and-red-wiring = "straight";
+
+ port {
+ lcdc_0: endpoint@0 {
+ remote-endpoint = <&hdmi_0>;
+ };
+ };
+};
+
+&i2c0 {
+ adv7511: adv7511@39 {
+ compatible = "adi,adv7511";
+ reg = <0x39>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&adi_hdmi_bbbi_pins>;
+
+ /* Convert 24bit BGR to RGB, e.g. cross red and blue wiring */
+ /* video-ports = <0x234501>; */
+
+ #sound-dai-cells = <0>;
+
+ ports {
+ port@0 {
+ hdmi_0: endpoint@0 {
+ remote-endpoint = <&lcdc_0>;
+ };
+ };
+ };
+ };
+};
+
+&rtc {
+ system-power-controller;
+};
+
+&mcasp0 {
+ #sound-dai-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&mcasp0_pins>;
+ status = "okay";
+ op-mode = <0>; /* MCASP_IIS_MODE */
+ tdm-slots = <2>;
+ serial-dir = < /* 0: INACTIVE, 1: TX, 2: RX */
+ 0 0 1 0
+ >;
+ tx-num-evt = <1>;
+ rx-num-evt = <1>;
+};
+
+/ {
+ clk_mcasp0_fixed: clk_mcasp0_fixed {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <24576000>;
+ };
+
+ clk_mcasp0: clk_mcasp0 {
+ #clock-cells = <0>;
+ compatible = "gpio-gate-clock";
+ clocks = <&clk_mcasp0_fixed>;
+ enable-gpios = <&gpio1 27 0>; /* BeagleBone Black Clk enable on GPIO1_27 */
+ };
+
+ sound {
+ compatible = "simple-audio-card";
+ simple-audio-card,name = "TI BeagleBone Black";
+ simple-audio-card,format = "i2s";
+ simple-audio-card,bitclock-master = <&dailink0_master>;
+ simple-audio-card,frame-master = <&dailink0_master>;
+
+ dailink0_master: simple-audio-card,cpu {
+ sound-dai = <&mcasp0>;
+ clocks = <&clk_mcasp0>;
+ };
+
+ simple-audio-card,codec {
+ sound-dai = <&adv7511>;
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/am335x-bone-common-no-capemgr.dtsi b/arch/arm/boot/dts/am335x-bone-common-no-capemgr.dtsi
new file mode 100644
index 0000000000..90f13e0629
--- /dev/null
+++ b/arch/arm/boot/dts/am335x-bone-common-no-capemgr.dtsi
@@ -0,0 +1,373 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
+ */
+
+/ {
+ cpus {
+ cpu@0 {
+ cpu0-supply = <&dcdc2_reg>;
+ };
+ };
+
+ memory@80000000 {
+ device_type = "memory";
+ reg = <0x80000000 0x10000000>; /* 256 MB */
+ };
+
+ chosen {
+ stdout-path = &uart0;
+ };
+
+ leds {
+ pinctrl-names = "default";
+ pinctrl-0 = <&user_leds_s0>;
+
+ compatible = "gpio-leds";
+
+ led2 {
+ label = "beaglebone:green:usr0";
+ gpios = <&gpio1 21 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "heartbeat";
+ default-state = "off";
+ };
+
+ led3 {
+ label = "beaglebone:green:usr1";
+ gpios = <&gpio1 22 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "mmc0";
+ default-state = "off";
+ };
+
+ led4 {
+ label = "beaglebone:green:usr2";
+ gpios = <&gpio1 23 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "cpu0";
+ default-state = "off";
+ };
+
+ led5 {
+ label = "beaglebone:green:usr3";
+ gpios = <&gpio1 24 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "mmc1";
+ default-state = "off";
+ };
+ };
+
+ vmmcsd_fixed: fixedregulator0 {
+ compatible = "regulator-fixed";
+ regulator-name = "vmmcsd_fixed";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
+};
+
+&am33xx_pinmux {
+ user_leds_s0: user_leds_s0 {
+ pinctrl-single,pins = <
+ AM33XX_PADCONF(AM335X_PIN_GPMC_A5, PIN_OUTPUT_PULLDOWN, MUX_MODE7) /* gpmc_a5.gpio1_21 */
+ AM33XX_PADCONF(AM335X_PIN_GPMC_A6, PIN_OUTPUT_PULLUP, MUX_MODE7) /* gpmc_a6.gpio1_22 */
+ AM33XX_PADCONF(AM335X_PIN_GPMC_A7, PIN_OUTPUT_PULLDOWN, MUX_MODE7) /* gpmc_a7.gpio1_23 */
+ AM33XX_PADCONF(AM335X_PIN_GPMC_A8, PIN_OUTPUT_PULLUP, MUX_MODE7) /* gpmc_a8.gpio1_24 */
+ >;
+ };
+
+ i2c0_pins: pinmux_i2c0_pins {
+ pinctrl-single,pins = <
+ AM33XX_PADCONF(AM335X_PIN_I2C0_SDA, PIN_INPUT_PULLUP, MUX_MODE0) /* i2c0_sda.i2c0_sda */
+ AM33XX_PADCONF(AM335X_PIN_I2C0_SCL, PIN_INPUT_PULLUP, MUX_MODE0) /* i2c0_scl.i2c0_scl */
+ >;
+ };
+
+ i2c2_pins: pinmux_i2c2_pins {
+ pinctrl-single,pins = <
+ AM33XX_PADCONF(AM335X_PIN_UART1_CTSN, PIN_INPUT_PULLUP, MUX_MODE3) /* uart1_ctsn.i2c2_sda */
+ AM33XX_PADCONF(AM335X_PIN_UART1_RTSN, PIN_INPUT_PULLUP, MUX_MODE3) /* uart1_rtsn.i2c2_scl */
+ >;
+ };
+
+ uart0_pins: pinmux_uart0_pins {
+ pinctrl-single,pins = <
+ AM33XX_PADCONF(AM335X_PIN_UART0_RXD, PIN_INPUT_PULLUP, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_UART0_TXD, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+ >;
+ };
+
+ cpsw_default: cpsw_default {
+ pinctrl-single,pins = <
+ /* Slave 1 */
+ AM33XX_PADCONF(AM335X_PIN_MII1_RX_ER, PIN_INPUT_PULLUP, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MII1_TX_EN, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MII1_RX_DV, PIN_INPUT_PULLUP, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MII1_TXD3, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MII1_TXD2, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MII1_TXD1, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MII1_TXD0, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MII1_TX_CLK, PIN_INPUT_PULLUP, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MII1_RX_CLK, PIN_INPUT_PULLUP, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MII1_RXD3, PIN_INPUT_PULLUP, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MII1_RXD2, PIN_INPUT_PULLUP, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MII1_RXD1, PIN_INPUT_PULLUP, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MII1_RXD0, PIN_INPUT_PULLUP, MUX_MODE0)
+ >;
+ };
+
+ cpsw_sleep: cpsw_sleep {
+ pinctrl-single,pins = <
+ /* Slave 1 reset value */
+ AM33XX_PADCONF(AM335X_PIN_MII1_RX_ER, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ AM33XX_PADCONF(AM335X_PIN_MII1_TX_EN, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ AM33XX_PADCONF(AM335X_PIN_MII1_RX_DV, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ AM33XX_PADCONF(AM335X_PIN_MII1_TXD3, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ AM33XX_PADCONF(AM335X_PIN_MII1_TXD2, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ AM33XX_PADCONF(AM335X_PIN_MII1_TXD1, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ AM33XX_PADCONF(AM335X_PIN_MII1_TXD0, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ AM33XX_PADCONF(AM335X_PIN_MII1_TX_CLK, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ AM33XX_PADCONF(AM335X_PIN_MII1_RX_CLK, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ AM33XX_PADCONF(AM335X_PIN_MII1_RXD3, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ AM33XX_PADCONF(AM335X_PIN_MII1_RXD2, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ AM33XX_PADCONF(AM335X_PIN_MII1_RXD1, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ AM33XX_PADCONF(AM335X_PIN_MII1_RXD0, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ >;
+ };
+
+ davinci_mdio_default: davinci_mdio_default {
+ pinctrl-single,pins = <
+ /* MDIO */
+ AM33XX_PADCONF(AM335X_PIN_MDIO, PIN_INPUT_PULLUP | SLEWCTRL_FAST, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MDC, PIN_OUTPUT_PULLUP, MUX_MODE0)
+ >;
+ };
+
+ davinci_mdio_sleep: davinci_mdio_sleep {
+ pinctrl-single,pins = <
+ /* MDIO reset value */
+ AM33XX_PADCONF(AM335X_PIN_MDIO, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ AM33XX_PADCONF(AM335X_PIN_MDC, PIN_INPUT_PULLDOWN, MUX_MODE7)
+ >;
+ };
+
+ mmc1_pins: pinmux_mmc1_pins {
+ pinctrl-single,pins = <
+ AM33XX_PADCONF(AM335X_PIN_SPI0_CS1, PIN_INPUT, MUX_MODE7) /* spio0_cs1.gpio0_6 */
+ AM33XX_PADCONF(AM335X_PIN_MMC0_DAT0, PIN_INPUT_PULLUP, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MMC0_DAT1, PIN_INPUT_PULLUP, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MMC0_DAT2, PIN_INPUT_PULLUP, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MMC0_DAT3, PIN_INPUT_PULLUP, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MMC0_CMD, PIN_INPUT_PULLUP, MUX_MODE0)
+ AM33XX_PADCONF(AM335X_PIN_MMC0_CLK, PIN_INPUT_PULLUP, MUX_MODE0)
+ >;
+ };
+
+ emmc_pins: pinmux_emmc_pins {
+ pinctrl-single,pins = <
+ AM33XX_PADCONF(AM335X_PIN_GPMC_CSN1, PIN_INPUT_PULLUP, MUX_MODE2) /* gpmc_csn1.mmc1_clk */
+ AM33XX_PADCONF(AM335X_PIN_GPMC_CSN2, PIN_INPUT_PULLUP, MUX_MODE2) /* gpmc_csn2.mmc1_cmd */
+ AM33XX_PADCONF(AM335X_PIN_GPMC_AD0, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad0.mmc1_dat0 */
+ AM33XX_PADCONF(AM335X_PIN_GPMC_AD1, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad1.mmc1_dat1 */
+ AM33XX_PADCONF(AM335X_PIN_GPMC_AD2, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad2.mmc1_dat2 */
+ AM33XX_PADCONF(AM335X_PIN_GPMC_AD3, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad3.mmc1_dat3 */
+ AM33XX_PADCONF(AM335X_PIN_GPMC_AD4, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad4.mmc1_dat4 */
+ AM33XX_PADCONF(AM335X_PIN_GPMC_AD5, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad5.mmc1_dat5 */
+ AM33XX_PADCONF(AM335X_PIN_GPMC_AD6, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad6.mmc1_dat6 */
+ AM33XX_PADCONF(AM335X_PIN_GPMC_AD7, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad7.mmc1_dat7 */
+ >;
+ };
+};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_pins>;
+
+ status = "okay";
+};
+
+&usb {
+ status = "okay";
+};
+
+&usb_ctrl_mod {
+ status = "okay";
+};
+
+&usb0_phy {
+ status = "okay";
+};
+
+&usb1_phy {
+ status = "okay";
+};
+
+&usb0 {
+ status = "okay";
+ dr_mode = "peripheral";
+ interrupts-extended = <&intc 18 &tps 0>;
+ interrupt-names = "mc", "vbus";
+};
+
+&usb1 {
+ status = "okay";
+ dr_mode = "host";
+};
+
+&cppi41dma {
+ status = "okay";
+};
+
+&i2c0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c0_pins>;
+
+ status = "okay";
+ clock-frequency = <400000>;
+
+ tps: tps@24 {
+ reg = <0x24>;
+ };
+
+ baseboard_eeprom: baseboard_eeprom@50 {
+ compatible = "atmel,24c256";
+ reg = <0x50>;
+
+ #address-cells = <1>;
+ #size-cells = <1>;
+ baseboard_data: baseboard_data@0 {
+ reg = <0 0x100>;
+ };
+ };
+};
+
+&i2c2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c2_pins>;
+
+ status = "okay";
+ clock-frequency = <100000>;
+};
+
+
+/include/ "tps65217.dtsi"
+
+&tps {
+ /*
+ * Configure pmic to enter OFF-state instead of SLEEP-state ("RTC-only
+ * mode") at poweroff. Most BeagleBone versions do not support RTC-only
+ * mode and risk hardware damage if this mode is entered.
+ *
+ * For details, see linux-omap mailing list May 2015 thread
+ * [PATCH] ARM: dts: am335x-bone* enable pmic-shutdown-controller
+ * In particular, messages:
+ * http://www.spinics.net/lists/linux-omap/msg118585.html
+ * http://www.spinics.net/lists/linux-omap/msg118615.html
+ *
+ * You can override this later with
+ * &tps { /delete-property/ ti,pmic-shutdown-controller; }
+ * if you want to use RTC-only mode and made sure you are not affected
+ * by the hardware problems. (Tip: double-check by performing a current
+ * measurement after shutdown: it should be less than 1 mA.)
+ */
+
+ interrupts = <7>; /* NMI */
+ interrupt-parent = <&intc>;
+
+ ti,pmic-shutdown-controller;
+
+ charger {
+ status = "okay";
+ };
+
+ pwrbutton {
+ status = "okay";
+ };
+
+ regulators {
+ dcdc1_reg: regulator@0 {
+ regulator-name = "vdds_dpr";
+ regulator-always-on;
+ };
+
+ dcdc2_reg: regulator@1 {
+ /* VDD_MPU voltage limits 0.95V - 1.26V with +/-4% tolerance */
+ regulator-name = "vdd_mpu";
+ regulator-min-microvolt = <925000>;
+ regulator-max-microvolt = <1351500>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ dcdc3_reg: regulator@2 {
+ /* VDD_CORE voltage limits 0.95V - 1.1V with +/-4% tolerance */
+ regulator-name = "vdd_core";
+ regulator-min-microvolt = <925000>;
+ regulator-max-microvolt = <1150000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo1_reg: regulator@3 {
+ regulator-name = "vio,vrtc,vdds";
+ regulator-always-on;
+ };
+
+ ldo2_reg: regulator@4 {
+ regulator-name = "vdd_3v3aux";
+ regulator-always-on;
+ };
+
+ ldo3_reg: regulator@5 {
+ regulator-name = "vdd_1v8";
+ regulator-always-on;
+ };
+
+ ldo4_reg: regulator@6 {
+ regulator-name = "vdd_3v3a";
+ regulator-always-on;
+ };
+ };
+};
+
+&cpsw_emac0 {
+ phy-handle = <ðphy0>;
+ phy-mode = "mii";
+};
+
+&mac {
+ slaves = <1>;
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&cpsw_default>;
+ pinctrl-1 = <&cpsw_sleep>;
+ status = "okay";
+};
+
+&davinci_mdio {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&davinci_mdio_default>;
+ pinctrl-1 = <&davinci_mdio_sleep>;
+ status = "okay";
+
+ ethphy0: ethernet-phy@0 {
+ reg = <0>;
+ };
+};
+
+&mmc1 {
+ status = "okay";
+ bus-width = <0x4>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmc1_pins>;
+ cd-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
+};
+
+&aes {
+ status = "okay";
+};
+
+&sham {
+ status = "okay";
+};
+
+&rtc {
+ clocks = <&clk_32768_ck>, <&clk_24mhz_clkctrl AM3_CLK_24MHZ_CLKDIV32K_CLKCTRL 0>;
+ clock-names = "ext-clk", "int-clk";
+ system-power-controller;
+};
diff --git a/arch/arm/boot/dts/am335x-bone-common-univ.dtsi b/arch/arm/boot/dts/am335x-bone-common-univ.dtsi
new file mode 100644
index 0000000000..6d51e3b4ed
--- /dev/null
+++ b/arch/arm/boot/dts/am335x-bone-common-univ.dtsi
@@ -0,0 +1,2920 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
+ */
+
+&am33xx_pinmux {
+ /************************/
+ /* P8 Header */
+ /************************/
+
+ /* P8_01 GND */
+
+ /* P8_02 GND */
+
+
+ /* P8_03 (ZCZ ball R9) emmc */
+ P8_03_default_pin: pinmux_P8_03_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0818, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad6.gpio1_6 */
+ P8_03_gpio_pin: pinmux_P8_03_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0818, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad6.gpio1_6 */
+ P8_03_gpio_pu_pin: pinmux_P8_03_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0818, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad6.gpio1_6 */
+ P8_03_gpio_pd_pin: pinmux_P8_03_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0818, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad6.gpio1_6 */
+ P8_03_gpio_input_pin: pinmux_P8_03_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0818, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad6.gpio1_6 */
+
+ /* P8_04 (ZCZ ball T9) emmc */
+ P8_04_default_pin: pinmux_P8_04_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x081c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad7.gpio1_7 */
+ P8_04_gpio_pin: pinmux_P8_04_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x081c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad7.gpio1_7 */
+ P8_04_gpio_pu_pin: pinmux_P8_04_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x081c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad7.gpio1_7 */
+ P8_04_gpio_pd_pin: pinmux_P8_04_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x081c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad7.gpio1_7 */
+ P8_04_gpio_input_pin: pinmux_P8_04_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x081c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad7.gpio1_7 */
+
+ /* P8_05 (ZCZ ball R8) emmc */
+ P8_05_default_pin: pinmux_P8_05_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0808, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad2.gpio1_2 */
+ P8_05_gpio_pin: pinmux_P8_05_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0808, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad2.gpio1_2 */
+ P8_05_gpio_pu_pin: pinmux_P8_05_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0808, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad2.gpio1_2 */
+ P8_05_gpio_pd_pin: pinmux_P8_05_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0808, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad2.gpio1_2 */
+ P8_05_gpio_input_pin: pinmux_P8_05_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0808, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad2.gpio1_2 */
+
+ /* P8_06 (ZCZ ball T8) emmc */
+ P8_06_default_pin: pinmux_P8_06_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x080c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad3.gpio1_3 */
+ P8_06_gpio_pin: pinmux_P8_06_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x080c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad3.gpio1_3 */
+ P8_06_gpio_pu_pin: pinmux_P8_06_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x080c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad3.gpio1_3 */
+ P8_06_gpio_pd_pin: pinmux_P8_06_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x080c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad3.gpio1_3 */
+ P8_06_gpio_input_pin: pinmux_P8_06_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x080c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad3.gpio1_3 */
+
+ /* P8_07 (ZCZ ball R7) gpio2_2 */
+ P8_07_default_pin: pinmux_P8_07_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_advn_ale.gpio2_2 */
+ P8_07_gpio_pin: pinmux_P8_07_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0890, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_advn_ale.gpio2_2 */
+ P8_07_gpio_pu_pin: pinmux_P8_07_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_advn_ale.gpio2_2 */
+ P8_07_gpio_pd_pin: pinmux_P8_07_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_advn_ale.gpio2_2 */
+ P8_07_gpio_input_pin: pinmux_P8_07_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0890, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_advn_ale.gpio2_2 */
+ P8_07_timer_pin: pinmux_P8_07_timer_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* gpmc_advn_ale.timer4 */
+
+ /* P8_08 (ZCZ ball T7) gpio2_3 */
+ P8_08_default_pin: pinmux_P8_08_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_oen_ren.gpio2_3 */
+ P8_08_gpio_pin: pinmux_P8_08_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0894, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_oen_ren.gpio2_3 */
+ P8_08_gpio_pu_pin: pinmux_P8_08_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_oen_ren.gpio2_3 */
+ P8_08_gpio_pd_pin: pinmux_P8_08_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_oen_ren.gpio2_3 */
+ P8_08_gpio_input_pin: pinmux_P8_08_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0894, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_oen_ren.gpio2_3 */
+ P8_08_timer_pin: pinmux_P8_08_timer_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* gpmc_oen_ren.timer7 */
+
+ /* P8_09 (ZCZ ball T6) gpio2_5 */
+ P8_09_default_pin: pinmux_P8_09_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be0n_cle.gpio2_5 */
+ P8_09_gpio_pin: pinmux_P8_09_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x089c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be0n_cle.gpio2_5 */
+ P8_09_gpio_pu_pin: pinmux_P8_09_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be0n_cle.gpio2_5 */
+ P8_09_gpio_pd_pin: pinmux_P8_09_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be0n_cle.gpio2_5 */
+ P8_09_gpio_input_pin: pinmux_P8_09_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x089c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_be0n_cle.gpio2_5 */
+ P8_09_timer_pin: pinmux_P8_09_timer_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* gpmc_be0n_cle.timer5 */
+
+ /* P8_10 (ZCZ ball U6) gpio2_4 */
+ P8_10_default_pin: pinmux_P8_10_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wen.gpio2_4 */
+ P8_10_gpio_pin: pinmux_P8_10_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0898, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wen.gpio2_4 */
+ P8_10_gpio_pu_pin: pinmux_P8_10_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wen.gpio2_4 */
+ P8_10_gpio_pd_pin: pinmux_P8_10_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wen.gpio2_4 */
+ P8_10_gpio_input_pin: pinmux_P8_10_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0898, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_wen.gpio2_4 */
+ P8_10_timer_pin: pinmux_P8_10_timer_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* gpmc_wen.timer6 */
+
+ /* P8_11 (ZCZ ball R12) gpio1_13 */
+ P8_11_default_pin: pinmux_P8_11_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P8_11_gpio_pin: pinmux_P8_11_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P8_11_gpio_pu_pin: pinmux_P8_11_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P8_11_gpio_pd_pin: pinmux_P8_11_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P8_11_gpio_input_pin: pinmux_P8_11_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P8_11_qep_pin: pinmux_P8_11_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad13.eqep2b_in */
+ P8_11_pruout_pin: pinmux_P8_11_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_ad13.pru0_out15 */
+
+ /* P8_12 (ZCZ ball T12) gpio1_12 */
+ P8_12_default_pin: pinmux_P8_12_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P8_12_gpio_pin: pinmux_P8_12_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P8_12_gpio_pu_pin: pinmux_P8_12_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P8_12_gpio_pd_pin: pinmux_P8_12_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P8_12_gpio_input_pin: pinmux_P8_12_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P8_12_qep_pin: pinmux_P8_12_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad12.eqep2a_in */
+ P8_12_pruout_pin: pinmux_P8_12_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_ad12.pru0_out14 */
+
+ /* P8_13 (ZCZ ball T10) gpio0_23 */
+ P8_13_default_pin: pinmux_P8_13_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P8_13_gpio_pin: pinmux_P8_13_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P8_13_gpio_pu_pin: pinmux_P8_13_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P8_13_gpio_pd_pin: pinmux_P8_13_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P8_13_gpio_input_pin: pinmux_P8_13_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P8_13_pwm_pin: pinmux_P8_13_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad9.ehrpwm2b */
+
+ /* P8_14 (ZCZ ball T11) gpio0_26 */
+ P8_14_default_pin: pinmux_P8_14_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad10.gpio0_26 */
+ P8_14_gpio_pin: pinmux_P8_14_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0828, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad10.gpio0_26 */
+ P8_14_gpio_pu_pin: pinmux_P8_14_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad10.gpio0_26 */
+ P8_14_gpio_pd_pin: pinmux_P8_14_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad10.gpio0_26 */
+ P8_14_gpio_input_pin: pinmux_P8_14_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0828, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad10.gpio0_26 */
+ P8_14_pwm_pin: pinmux_P8_14_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad10.ehrpwm2_tripzone_input */
+
+ /* P8_15 (ZCZ ball U13) gpio1_15 */
+ P8_15_default_pin: pinmux_P8_15_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P8_15_gpio_pin: pinmux_P8_15_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P8_15_gpio_pu_pin: pinmux_P8_15_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P8_15_gpio_pd_pin: pinmux_P8_15_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P8_15_gpio_input_pin: pinmux_P8_15_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P8_15_qep_pin: pinmux_P8_15_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad15.eqep2_strobe */
+ P8_15_pru_ecap_pin: pinmux_P8_15_pru_ecap_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* gpmc_ad15.pr1_ecap0_ecap_capin_apwm_o */
+ P8_15_pruin_pin: pinmux_P8_15_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_INPUT | MUX_MODE6) >; }; /* gpmc_ad15.pru0_in15 */
+
+ /* P8_16 (ZCZ ball V13) gpio1_14 */
+ P8_16_default_pin: pinmux_P8_16_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P8_16_gpio_pin: pinmux_P8_16_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P8_16_gpio_pu_pin: pinmux_P8_16_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P8_16_gpio_pd_pin: pinmux_P8_16_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P8_16_gpio_input_pin: pinmux_P8_16_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P8_16_qep_pin: pinmux_P8_16_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad14.eqep2_index */
+ P8_16_pruin_pin: pinmux_P8_16_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_INPUT | MUX_MODE6) >; }; /* gpmc_ad14.pru0_in14 */
+
+ /* P8_17 (ZCZ ball U12) gpio0_27 */
+ P8_17_default_pin: pinmux_P8_17_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad11.gpio0_27 */
+ P8_17_gpio_pin: pinmux_P8_17_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x082c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad11.gpio0_27 */
+ P8_17_gpio_pu_pin: pinmux_P8_17_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad11.gpio0_27 */
+ P8_17_gpio_pd_pin: pinmux_P8_17_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad11.gpio0_27 */
+ P8_17_gpio_input_pin: pinmux_P8_17_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x082c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad11.gpio0_27 */
+ P8_17_pwm_pin: pinmux_P8_17_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad11.ehrpwm0_synco */
+
+ /* P8_18 (ZCZ ball V12) gpio2_1 */
+ P8_18_default_pin: pinmux_P8_18_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+ P8_18_gpio_pin: pinmux_P8_18_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+ P8_18_gpio_pu_pin: pinmux_P8_18_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+ P8_18_gpio_pd_pin: pinmux_P8_18_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+ P8_18_gpio_input_pin: pinmux_P8_18_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+
+ /* P8_19 (ZCZ ball U10) gpio0_22 */
+ P8_19_default_pin: pinmux_P8_19_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad8.gpio0_22 */
+ P8_19_gpio_pin: pinmux_P8_19_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0820, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad8.gpio0_22 */
+ P8_19_gpio_pu_pin: pinmux_P8_19_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad8.gpio0_22 */
+ P8_19_gpio_pd_pin: pinmux_P8_19_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad8.gpio0_22 */
+ P8_19_gpio_input_pin: pinmux_P8_19_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0820, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad8.gpio0_22 */
+ P8_19_pwm_pin: pinmux_P8_19_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad8.ehrpwm2a */
+
+ /* P8_20 (ZCZ ball V9) emmc */
+ P8_20_default_pin: pinmux_P8_20_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn2.gpio1_31 */
+ P8_20_gpio_pin: pinmux_P8_20_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0884, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn2.gpio1_31 */
+ P8_20_gpio_pu_pin: pinmux_P8_20_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn2.gpio1_31 */
+ P8_20_gpio_pd_pin: pinmux_P8_20_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn2.gpio1_31 */
+ P8_20_gpio_input_pin: pinmux_P8_20_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0884, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_csn2.gpio1_31 */
+ P8_20_pruout_pin: pinmux_P8_20_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* gpmc_csn2.pru1_out13 */
+ P8_20_pruin_pin: pinmux_P8_20_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0884, PIN_INPUT | MUX_MODE6) >; }; /* gpmc_csn2.pru1_in13 */
+
+ /* P8_21 (ZCZ ball U9) emmc */
+ P8_21_default_pin: pinmux_P8_21_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn1.gpio1_30 */
+ P8_21_gpio_pin: pinmux_P8_21_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0880, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn1.gpio1_30 */
+ P8_21_gpio_pu_pin: pinmux_P8_21_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn1.gpio1_30 */
+ P8_21_gpio_pd_pin: pinmux_P8_21_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn1.gpio1_30 */
+ P8_21_gpio_input_pin: pinmux_P8_21_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0880, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_csn1.gpio1_30 */
+ P8_21_pruout_pin: pinmux_P8_21_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* gpmc_csn1.pru1_out12 */
+ P8_21_pruin_pin: pinmux_P8_21_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0880, PIN_INPUT | MUX_MODE6) >; }; /* gpmc_csn1.pru1_in12 */
+
+ /* P8_22 (ZCZ ball V8) emmc */
+ P8_22_default_pin: pinmux_P8_22_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0814, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad5.gpio1_5 */
+ P8_22_gpio_pin: pinmux_P8_22_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0814, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad5.gpio1_5 */
+ P8_22_gpio_pu_pin: pinmux_P8_22_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0814, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad5.gpio1_5 */
+ P8_22_gpio_pd_pin: pinmux_P8_22_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0814, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad5.gpio1_5 */
+ P8_22_gpio_input_pin: pinmux_P8_22_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0814, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad5.gpio1_5 */
+
+ /* P8_23 (ZCZ ball U8) emmc */
+ P8_23_default_pin: pinmux_P8_23_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0810, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad4.gpio1_4 */
+ P8_23_gpio_pin: pinmux_P8_23_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0810, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad4.gpio1_4 */
+ P8_23_gpio_pu_pin: pinmux_P8_23_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0810, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad4.gpio1_4 */
+ P8_23_gpio_pd_pin: pinmux_P8_23_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0810, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad4.gpio1_4 */
+ P8_23_gpio_input_pin: pinmux_P8_23_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0810, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad4.gpio1_4 */
+
+ /* P8_24 (ZCZ ball V7) emmc */
+ P8_24_default_pin: pinmux_P8_24_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0804, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad1.gpio1_1 */
+ P8_24_gpio_pin: pinmux_P8_24_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0804, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad1.gpio1_1 */
+ P8_24_gpio_pu_pin: pinmux_P8_24_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0804, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad1.gpio1_1 */
+ P8_24_gpio_pd_pin: pinmux_P8_24_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0804, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad1.gpio1_1 */
+ P8_24_gpio_input_pin: pinmux_P8_24_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0804, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad1.gpio1_1 */
+
+ /* P8_25 (ZCZ ball U7) emmc */
+ P8_25_default_pin: pinmux_P8_25_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0800, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad0.gpio1_0 */
+ P8_25_gpio_pin: pinmux_P8_25_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0800, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad0.gpio1_0 */
+ P8_25_gpio_pu_pin: pinmux_P8_25_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0800, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad0.gpio1_0 */
+ P8_25_gpio_pd_pin: pinmux_P8_25_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0800, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad0.gpio1_0 */
+ P8_25_gpio_input_pin: pinmux_P8_25_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0800, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad0.gpio1_0 */
+
+ /* P8_26 (ZCZ ball V6) gpio1_29 */
+ P8_26_default_pin: pinmux_P8_26_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x087c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn0.gpio1_29 */
+ P8_26_gpio_pin: pinmux_P8_26_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x087c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn0.gpio1_29 */
+ P8_26_gpio_pu_pin: pinmux_P8_26_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x087c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn0.gpio1_29 */
+ P8_26_gpio_pd_pin: pinmux_P8_26_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x087c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn0.gpio1_29 */
+ P8_26_gpio_input_pin: pinmux_P8_26_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x087c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_csn0.gpio1_29 */
+
+ /* P8_27 (ZCZ ball U5) hdmi */
+ P8_27_default_pin: pinmux_P8_27_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P8_27_gpio_pin: pinmux_P8_27_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P8_27_gpio_pu_pin: pinmux_P8_27_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P8_27_gpio_pd_pin: pinmux_P8_27_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P8_27_gpio_input_pin: pinmux_P8_27_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_INPUT | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P8_27_pruout_pin: pinmux_P8_27_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_vsync.pru1_out8 */
+ P8_27_pruin_pin: pinmux_P8_27_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_INPUT | MUX_MODE6) >; }; /* lcd_vsync.pru1_in8 */
+
+ /* P8_28 (ZCZ ball V5) hdmi */
+ P8_28_default_pin: pinmux_P8_28_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_pclk.gpio2_24 */
+ P8_28_gpio_pin: pinmux_P8_28_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_pclk.gpio2_24 */
+ P8_28_gpio_pu_pin: pinmux_P8_28_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_pclk.gpio2_24 */
+ P8_28_gpio_pd_pin: pinmux_P8_28_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_pclk.gpio2_24 */
+ P8_28_gpio_input_pin: pinmux_P8_28_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_INPUT | MUX_MODE7) >; }; /* lcd_pclk.gpio2_24 */
+ P8_28_pruout_pin: pinmux_P8_28_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_pclk.pru1_out10 */
+ P8_28_pruin_pin: pinmux_P8_28_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_INPUT | MUX_MODE6) >; }; /* lcd_pclk.pru1_in10 */
+
+ /* P8_29 (ZCZ ball R5) hdmi */
+ P8_29_default_pin: pinmux_P8_29_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P8_29_gpio_pin: pinmux_P8_29_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P8_29_gpio_pu_pin: pinmux_P8_29_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P8_29_gpio_pd_pin: pinmux_P8_29_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P8_29_gpio_input_pin: pinmux_P8_29_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_INPUT | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P8_29_pruout_pin: pinmux_P8_29_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_hsync.pru1_out9 */
+ P8_29_pruin_pin: pinmux_P8_29_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_INPUT | MUX_MODE6) >; }; /* lcd_hsync.pru1_in9 */
+
+ /* P8_30 (ZCZ ball R6) hdmi */
+ P8_30_default_pin: pinmux_P8_30_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P8_30_gpio_pin: pinmux_P8_30_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P8_30_gpio_pu_pin: pinmux_P8_30_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P8_30_gpio_pd_pin: pinmux_P8_30_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P8_30_gpio_input_pin: pinmux_P8_30_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_INPUT | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P8_30_pruout_pin: pinmux_P8_30_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_ac_bias_en.pru1_out11 */
+ P8_30_pruin_pin: pinmux_P8_30_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_INPUT | MUX_MODE6) >; }; /* lcd_ac_bias_en.pru1_in11 */
+
+ /* P8_31 (ZCZ ball V4) hdmi */
+ P8_31_default_pin: pinmux_P8_31_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data14.gpio0_10 */
+ P8_31_gpio_pin: pinmux_P8_31_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data14.gpio0_10 */
+ P8_31_gpio_pu_pin: pinmux_P8_31_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data14.gpio0_10 */
+ P8_31_gpio_pd_pin: pinmux_P8_31_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data14.gpio0_10 */
+ P8_31_gpio_input_pin: pinmux_P8_31_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d8, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data14.gpio0_10 */
+ P8_31_qep_pin: pinmux_P8_31_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* lcd_data14.eqep1_index */
+ P8_31_uart_pin: pinmux_P8_31_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* lcd_data14.uart5_rxd */
+
+ /* P8_32 (ZCZ ball T5) hdmi */
+ P8_32_default_pin: pinmux_P8_32_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data15.gpio0_11 */
+ P8_32_gpio_pin: pinmux_P8_32_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08dc, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data15.gpio0_11 */
+ P8_32_gpio_pu_pin: pinmux_P8_32_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data15.gpio0_11 */
+ P8_32_gpio_pd_pin: pinmux_P8_32_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data15.gpio0_11 */
+ P8_32_gpio_input_pin: pinmux_P8_32_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08dc, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data15.gpio0_11 */
+ P8_32_qep_pin: pinmux_P8_32_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* lcd_data15.eqep1_strobe */
+
+ /* P8_33 (ZCZ ball V3) hdmi */
+ P8_33_default_pin: pinmux_P8_33_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data13.gpio0_9 */
+ P8_33_gpio_pin: pinmux_P8_33_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data13.gpio0_9 */
+ P8_33_gpio_pu_pin: pinmux_P8_33_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data13.gpio0_9 */
+ P8_33_gpio_pd_pin: pinmux_P8_33_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data13.gpio0_9 */
+ P8_33_gpio_input_pin: pinmux_P8_33_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d4, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data13.gpio0_9 */
+ P8_33_qep_pin: pinmux_P8_33_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* lcd_data13.eqep1b_in */
+
+ /* P8_34 (ZCZ ball U4) hdmi */
+ P8_34_default_pin: pinmux_P8_34_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data11.gpio2_17 */
+ P8_34_gpio_pin: pinmux_P8_34_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08cc, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data11.gpio2_17 */
+ P8_34_gpio_pu_pin: pinmux_P8_34_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data11.gpio2_17 */
+ P8_34_gpio_pd_pin: pinmux_P8_34_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data11.gpio2_17 */
+ P8_34_gpio_input_pin: pinmux_P8_34_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08cc, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data11.gpio2_17 */
+ P8_34_pwm_pin: pinmux_P8_34_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; }; /* lcd_data11.ehrpwm1b */
+
+ /* P8_35 (ZCZ ball V2) hdmi */
+ P8_35_default_pin: pinmux_P8_35_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data12.gpio0_8 */
+ P8_35_gpio_pin: pinmux_P8_35_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data12.gpio0_8 */
+ P8_35_gpio_pu_pin: pinmux_P8_35_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data12.gpio0_8 */
+ P8_35_gpio_pd_pin: pinmux_P8_35_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data12.gpio0_8 */
+ P8_35_gpio_input_pin: pinmux_P8_35_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d0, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data12.gpio0_8 */
+ P8_35_qep_pin: pinmux_P8_35_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* lcd_data12.eqep1a_in */
+
+ /* P8_36 (ZCZ ball U3) hdmi */
+ P8_36_default_pin: pinmux_P8_36_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data10.gpio2_16 */
+ P8_36_gpio_pin: pinmux_P8_36_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data10.gpio2_16 */
+ P8_36_gpio_pu_pin: pinmux_P8_36_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data10.gpio2_16 */
+ P8_36_gpio_pd_pin: pinmux_P8_36_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data10.gpio2_16 */
+ P8_36_gpio_input_pin: pinmux_P8_36_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c8, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data10.gpio2_16 */
+ P8_36_pwm_pin: pinmux_P8_36_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; }; /* lcd_data10.ehrpwm1a */
+
+ /* P8_37 (ZCZ ball U1) hdmi */
+ P8_37_default_pin: pinmux_P8_37_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data8.gpio2_14 */
+ P8_37_gpio_pin: pinmux_P8_37_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data8.gpio2_14 */
+ P8_37_gpio_pu_pin: pinmux_P8_37_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data8.gpio2_14 */
+ P8_37_gpio_pd_pin: pinmux_P8_37_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data8.gpio2_14 */
+ P8_37_gpio_input_pin: pinmux_P8_37_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c0, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data8.gpio2_14 */
+ P8_37_pwm_pin: pinmux_P8_37_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; }; /* lcd_data8.ehrpwm1_tripzone_input */
+ P8_37_uart_pin: pinmux_P8_37_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* lcd_data8.uart5_txd */
+
+ /* P8_38 (ZCZ ball U2) hdmi */
+ P8_38_default_pin: pinmux_P8_38_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data9.gpio2_15 */
+ P8_38_gpio_pin: pinmux_P8_38_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data9.gpio2_15 */
+ P8_38_gpio_pu_pin: pinmux_P8_38_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data9.gpio2_15 */
+ P8_38_gpio_pd_pin: pinmux_P8_38_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data9.gpio2_15 */
+ P8_38_gpio_input_pin: pinmux_P8_38_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c4, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data9.gpio2_15 */
+ P8_38_pwm_pin: pinmux_P8_38_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; }; /* lcd_data9.ehrpwm0_synco */
+ P8_38_uart_pin: pinmux_P8_38_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* lcd_data9.uart5_rxd */
+
+ /* P8_39 (ZCZ ball T3) hdmi */
+ P8_39_default_pin: pinmux_P8_39_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data6.gpio2_12 */
+ P8_39_gpio_pin: pinmux_P8_39_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data6.gpio2_12 */
+ P8_39_gpio_pu_pin: pinmux_P8_39_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data6.gpio2_12 */
+ P8_39_gpio_pd_pin: pinmux_P8_39_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data6.gpio2_12 */
+ P8_39_gpio_input_pin: pinmux_P8_39_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data6.gpio2_12 */
+ P8_39_qep_pin: pinmux_P8_39_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* lcd_data6.eqep2_index */
+ P8_39_pruout_pin: pinmux_P8_39_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data6.pru1_out6 */
+ P8_39_pruin_pin: pinmux_P8_39_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data6.pru1_in6 */
+
+ /* P8_40 (ZCZ ball T4) hdmi */
+ P8_40_default_pin: pinmux_P8_40_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data7.gpio2_13 */
+ P8_40_gpio_pin: pinmux_P8_40_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data7.gpio2_13 */
+ P8_40_gpio_pu_pin: pinmux_P8_40_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data7.gpio2_13 */
+ P8_40_gpio_pd_pin: pinmux_P8_40_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data7.gpio2_13 */
+ P8_40_gpio_input_pin: pinmux_P8_40_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data7.gpio2_13 */
+ P8_40_qep_pin: pinmux_P8_40_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* lcd_data7.eqep2_strobe */
+ P8_40_pruout_pin: pinmux_P8_40_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data7.pru1_out7 */
+ P8_40_pruin_pin: pinmux_P8_40_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data7.pru1_in7 */
+
+ /* P8_41 (ZCZ ball T1) hdmi */
+ P8_41_default_pin: pinmux_P8_41_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data4.gpio2_10 */
+ P8_41_gpio_pin: pinmux_P8_41_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data4.gpio2_10 */
+ P8_41_gpio_pu_pin: pinmux_P8_41_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data4.gpio2_10 */
+ P8_41_gpio_pd_pin: pinmux_P8_41_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data4.gpio2_10 */
+ P8_41_gpio_input_pin: pinmux_P8_41_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data4.gpio2_10 */
+ P8_41_qep_pin: pinmux_P8_41_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* lcd_data4.eqep2a_in */
+ P8_41_pruout_pin: pinmux_P8_41_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data4.pru1_out4 */
+ P8_41_pruin_pin: pinmux_P8_41_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data4.pru1_in4 */
+
+ /* P8_42 (ZCZ ball T2) hdmi */
+ P8_42_default_pin: pinmux_P8_42_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data5.gpio2_11 */
+ P8_42_gpio_pin: pinmux_P8_42_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data5.gpio2_11 */
+ P8_42_gpio_pu_pin: pinmux_P8_42_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data5.gpio2_11 */
+ P8_42_gpio_pd_pin: pinmux_P8_42_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data5.gpio2_11 */
+ P8_42_gpio_input_pin: pinmux_P8_42_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data5.gpio2_11 */
+ P8_42_qep_pin: pinmux_P8_42_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* lcd_data5.eqep2b_in */
+ P8_42_pruout_pin: pinmux_P8_42_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data5.pru1_out5 */
+ P8_42_pruin_pin: pinmux_P8_42_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data5.pru1_in5 */
+
+ /* P8_43 (ZCZ ball R3) hdmi */
+ P8_43_default_pin: pinmux_P8_43_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data2.gpio2_8 */
+ P8_43_gpio_pin: pinmux_P8_43_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data2.gpio2_8 */
+ P8_43_gpio_pu_pin: pinmux_P8_43_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data2.gpio2_8 */
+ P8_43_gpio_pd_pin: pinmux_P8_43_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data2.gpio2_8 */
+ P8_43_gpio_input_pin: pinmux_P8_43_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data2.gpio2_8 */
+ P8_43_pwm_pin: pinmux_P8_43_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* lcd_data2.ehrpwm2_tripzone_input */
+ P8_43_pruout_pin: pinmux_P8_43_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data2.pru1_out2 */
+ P8_43_pruin_pin: pinmux_P8_43_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data2.pru1_in2 */
+
+ /* P8_44 (ZCZ ball R4) hdmi */
+ P8_44_default_pin: pinmux_P8_44_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data3.gpio2_9 */
+ P8_44_gpio_pin: pinmux_P8_44_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data3.gpio2_9 */
+ P8_44_gpio_pu_pin: pinmux_P8_44_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data3.gpio2_9 */
+ P8_44_gpio_pd_pin: pinmux_P8_44_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data3.gpio2_9 */
+ P8_44_gpio_input_pin: pinmux_P8_44_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data3.gpio2_9 */
+ P8_44_pwm_pin: pinmux_P8_44_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* lcd_data3.ehrpwm0_synco */
+ P8_44_pruout_pin: pinmux_P8_44_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data3.pru1_out3 */
+ P8_44_pruin_pin: pinmux_P8_44_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data3.pru1_in3 */
+
+ /* P8_45 (ZCZ ball R1) hdmi */
+ P8_45_default_pin: pinmux_P8_45_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data0.gpio2_6 */
+ P8_45_gpio_pin: pinmux_P8_45_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data0.gpio2_6 */
+ P8_45_gpio_pu_pin: pinmux_P8_45_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data0.gpio2_6 */
+ P8_45_gpio_pd_pin: pinmux_P8_45_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data0.gpio2_6 */
+ P8_45_gpio_input_pin: pinmux_P8_45_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data0.gpio2_6 */
+ P8_45_pwm_pin: pinmux_P8_45_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* lcd_data0.ehrpwm2a */
+ P8_45_pruout_pin: pinmux_P8_45_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data0.pru1_out0 */
+ P8_45_pruin_pin: pinmux_P8_45_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data0.pru1_in0 */
+
+ /* P8_46 (ZCZ ball R2) hdmi */
+ P8_46_default_pin: pinmux_P8_46_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data1.gpio2_7 */
+ P8_46_gpio_pin: pinmux_P8_46_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data1.gpio2_7 */
+ P8_46_gpio_pu_pin: pinmux_P8_46_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data1.gpio2_7 */
+ P8_46_gpio_pd_pin: pinmux_P8_46_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data1.gpio2_7 */
+ P8_46_gpio_input_pin: pinmux_P8_46_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data1.gpio2_7 */
+ P8_46_pwm_pin: pinmux_P8_46_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* lcd_data1.ehrpwm2b */
+ P8_46_pruout_pin: pinmux_P8_46_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data1.pru1_out1 */
+ P8_46_pruin_pin: pinmux_P8_46_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data1.pru1_in1 */
+
+ /************************/
+ /* P9 Header */
+ /************************/
+
+ /* P9_01 GND */
+
+ /* P9_02 GND */
+
+ /* P9_03 3V3 */
+
+ /* P9_04 3V3 */
+
+ /* P9_05 VDD_5V */
+
+ /* P9_06 VDD_5V */
+
+ /* P9_07 SYS_5V */
+
+ /* P9_08 SYS_5V */
+
+ /* P9_09 PWR_BUT */
+
+ /* P9_10 RSTn */
+
+ /* P9_11 (ZCZ ball T17) gpio0_30 */
+ P9_11_default_pin: pinmux_P9_11_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wait0.gpio0_30 */
+ P9_11_gpio_pin: pinmux_P9_11_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wait0.gpio0_30 */
+ P9_11_gpio_pu_pin: pinmux_P9_11_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wait0.gpio0_30 */
+ P9_11_gpio_pd_pin: pinmux_P9_11_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wait0.gpio0_30 */
+ P9_11_gpio_input_pin: pinmux_P9_11_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_wait0.gpio0_30 */
+ P9_11_uart_pin: pinmux_P9_11_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; }; /* gpmc_wait0.uart4_rxd */
+
+ /* P9_12 (ZCZ ball U18) gpio1_28 */
+ P9_12_default_pin: pinmux_P9_12_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+ P9_12_gpio_pin: pinmux_P9_12_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+ P9_12_gpio_pu_pin: pinmux_P9_12_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+ P9_12_gpio_pd_pin: pinmux_P9_12_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+ P9_12_gpio_input_pin: pinmux_P9_12_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+
+ /* P9_13 (ZCZ ball U17) gpio0_31 */
+ P9_13_default_pin: pinmux_P9_13_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wpn.gpio0_31 */
+ P9_13_gpio_pin: pinmux_P9_13_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wpn.gpio0_31 */
+ P9_13_gpio_pu_pin: pinmux_P9_13_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wpn.gpio0_31 */
+ P9_13_gpio_pd_pin: pinmux_P9_13_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wpn.gpio0_31 */
+ P9_13_gpio_input_pin: pinmux_P9_13_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_wpn.gpio0_31 */
+ P9_13_uart_pin: pinmux_P9_13_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; }; /* gpmc_wpn.uart4_txd */
+
+ /* P9_14 (ZCZ ball U14) gpio1_18 */
+ P9_14_default_pin: pinmux_P9_14_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a2.gpio1_18 */
+ P9_14_gpio_pin: pinmux_P9_14_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a2.gpio1_18 */
+ P9_14_gpio_pu_pin: pinmux_P9_14_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a2.gpio1_18 */
+ P9_14_gpio_pd_pin: pinmux_P9_14_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a2.gpio1_18 */
+ P9_14_gpio_input_pin: pinmux_P9_14_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_a2.gpio1_18 */
+ P9_14_pwm_pin: pinmux_P9_14_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_a2.ehrpwm1a */
+
+ /* P9_15 (ZCZ ball R13) gpio1_16 */
+ P9_15_default_pin: pinmux_P9_15_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a0.gpio1_16 */
+ P9_15_gpio_pin: pinmux_P9_15_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0840, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a0.gpio1_16 */
+ P9_15_gpio_pu_pin: pinmux_P9_15_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a0.gpio1_16 */
+ P9_15_gpio_pd_pin: pinmux_P9_15_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a0.gpio1_16 */
+ P9_15_gpio_input_pin: pinmux_P9_15_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0840, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_a0.gpio1_16 */
+ P9_15_pwm_pin: pinmux_P9_15_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_a0.ehrpwm1_tripzone_input */
+
+ /* P9_16 (ZCZ ball T14) gpio1_19 */
+ P9_16_default_pin: pinmux_P9_16_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a3.gpio1_19 */
+ P9_16_gpio_pin: pinmux_P9_16_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x084c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a3.gpio1_19 */
+ P9_16_gpio_pu_pin: pinmux_P9_16_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a3.gpio1_19 */
+ P9_16_gpio_pd_pin: pinmux_P9_16_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a3.gpio1_19 */
+ P9_16_gpio_input_pin: pinmux_P9_16_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x084c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_a3.gpio1_19 */
+ P9_16_pwm_pin: pinmux_P9_16_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_a3.ehrpwm1b */
+
+ /* P9_17 (ZCZ ball A16) gpio0_5 */
+ P9_17_default_pin: pinmux_P9_17_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_cs0.gpio0_5 */
+ P9_17_gpio_pin: pinmux_P9_17_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* spi0_cs0.gpio0_5 */
+ P9_17_gpio_pu_pin: pinmux_P9_17_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_cs0.gpio0_5 */
+ P9_17_gpio_pd_pin: pinmux_P9_17_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* spi0_cs0.gpio0_5 */
+ P9_17_gpio_input_pin: pinmux_P9_17_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_INPUT | MUX_MODE7) >; }; /* spi0_cs0.gpio0_5 */
+ P9_17_spi_cs_pin: pinmux_P9_17_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_cs0.spi0_cs0 */
+ P9_17_i2c_pin: pinmux_P9_17_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* spi0_cs0.i2c1_scl */
+ P9_17_pwm_pin: pinmux_P9_17_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* spi0_cs0.ehrpwm0_synci */
+ P9_17_pru_uart_pin: pinmux_P9_17_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* spi0_cs0.pr1_uart0_txd */
+
+ /* P9_18 (ZCZ ball B16) gpio0_4 */
+ P9_18_default_pin: pinmux_P9_18_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_d1.gpio0_4 */
+ P9_18_gpio_pin: pinmux_P9_18_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* spi0_d1.gpio0_4 */
+ P9_18_gpio_pu_pin: pinmux_P9_18_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_d1.gpio0_4 */
+ P9_18_gpio_pd_pin: pinmux_P9_18_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* spi0_d1.gpio0_4 */
+ P9_18_gpio_input_pin: pinmux_P9_18_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_INPUT | MUX_MODE7) >; }; /* spi0_d1.gpio0_4 */
+ P9_18_spi_pin: pinmux_P9_18_spi_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_d1.spi0_d1 */
+ P9_18_i2c_pin: pinmux_P9_18_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* spi0_d1.i2c1_sda */
+ P9_18_pwm_pin: pinmux_P9_18_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* spi0_d1.ehrpwm0_tripzone_input */
+ P9_18_pru_uart_pin: pinmux_P9_18_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* spi0_d1.pr1_uart0_rxd */
+
+ /* P9_19 (ZCZ ball D17) i2c2_scl */
+ P9_19_default_pin: pinmux_P9_19_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_rtsn.i2c2_scl */
+ P9_19_gpio_pin: pinmux_P9_19_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart1_rtsn.gpio0_13 */
+ P9_19_gpio_pu_pin: pinmux_P9_19_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_rtsn.gpio0_13 */
+ P9_19_gpio_pd_pin: pinmux_P9_19_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart1_rtsn.gpio0_13 */
+ P9_19_gpio_input_pin: pinmux_P9_19_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_INPUT | MUX_MODE7) >; }; /* uart1_rtsn.gpio0_13 */
+ P9_19_timer_pin: pinmux_P9_19_timer_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* uart1_rtsn.timer5 */
+ P9_19_can_pin: pinmux_P9_19_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_INPUT_PULLUP | MUX_MODE2) >; }; /* uart1_rtsn.dcan0_rx */
+ P9_19_i2c_pin: pinmux_P9_19_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_rtsn.i2c2_scl */
+ P9_19_spi_cs_pin: pinmux_P9_19_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* uart1_rtsn.spi1_cs1 */
+ P9_19_pru_uart_pin: pinmux_P9_19_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; }; /* uart1_rtsn.pr1_uart0_rts_n */
+
+ /* P9_20 (ZCZ ball D18) i2c2_sda */
+ P9_20_default_pin: pinmux_P9_20_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_ctsn.i2c2_sda */
+ P9_20_gpio_pin: pinmux_P9_20_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart1_ctsn.gpio0_12 */
+ P9_20_gpio_pu_pin: pinmux_P9_20_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_ctsn.gpio0_12 */
+ P9_20_gpio_pd_pin: pinmux_P9_20_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart1_ctsn.gpio0_12 */
+ P9_20_gpio_input_pin: pinmux_P9_20_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_INPUT | MUX_MODE7) >; }; /* uart1_ctsn.gpio0_12 */
+ P9_20_timer_pin: pinmux_P9_20_timer_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* uart1_ctsn.timer6 */
+ P9_20_can_pin: pinmux_P9_20_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | MUX_MODE2) >; }; /* uart1_ctsn.dcan0_tx */
+ P9_20_i2c_pin: pinmux_P9_20_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_ctsn.i2c2_sda */
+ P9_20_spi_cs_pin: pinmux_P9_20_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* uart1_ctsn.spi1_cs0 */
+ P9_20_pru_uart_pin: pinmux_P9_20_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; }; /* uart1_ctsn.pr1_uart0_cts_n */
+
+ /* P9_21 (ZCZ ball B17) gpio0_3 */
+ P9_21_default_pin: pinmux_P9_21_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_d0.gpio0_3 */
+ P9_21_gpio_pin: pinmux_P9_21_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* spi0_d0.gpio0_3 */
+ P9_21_gpio_pu_pin: pinmux_P9_21_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_d0.gpio0_3 */
+ P9_21_gpio_pd_pin: pinmux_P9_21_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* spi0_d0.gpio0_3 */
+ P9_21_gpio_input_pin: pinmux_P9_21_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_INPUT | MUX_MODE7) >; }; /* spi0_d0.gpio0_3 */
+ P9_21_spi_pin: pinmux_P9_21_spi_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_d0.spi0_d0 */
+ P9_21_uart_pin: pinmux_P9_21_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* spi0_d0.uart2_txd */
+ P9_21_i2c_pin: pinmux_P9_21_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* spi0_d0.i2c2_scl */
+ P9_21_pwm_pin: pinmux_P9_21_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* spi0_d0.ehrpwm0b */
+ P9_21_pru_uart_pin: pinmux_P9_21_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* spi0_d0.pr1_uart0_rts_n */
+
+ /* P9_22 (ZCZ ball A17) gpio0_2 */
+ P9_22_default_pin: pinmux_P9_22_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_sclk.gpio0_2 */
+ P9_22_gpio_pin: pinmux_P9_22_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* spi0_sclk.gpio0_2 */
+ P9_22_gpio_pu_pin: pinmux_P9_22_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_sclk.gpio0_2 */
+ P9_22_gpio_pd_pin: pinmux_P9_22_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* spi0_sclk.gpio0_2 */
+ P9_22_gpio_input_pin: pinmux_P9_22_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_INPUT | MUX_MODE7) >; }; /* spi0_sclk.gpio0_2 */
+ P9_22_spi_sclk_pin: pinmux_P9_22_spi_sclk_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_sclk.spi0_sclk */
+ P9_22_uart_pin: pinmux_P9_22_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* spi0_sclk.uart2_rxd */
+ P9_22_i2c_pin: pinmux_P9_22_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* spi0_sclk.i2c2_sda */
+ P9_22_pwm_pin: pinmux_P9_22_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* spi0_sclk.ehrpwm0a */
+ P9_22_pru_uart_pin: pinmux_P9_22_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* spi0_sclk.pr1_uart0_cts_n */
+
+ /* P9_23 (ZCZ ball V14) gpio1_17 */
+ P9_23_default_pin: pinmux_P9_23_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a1.gpio1_17 */
+ P9_23_gpio_pin: pinmux_P9_23_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0844, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a1.gpio1_17 */
+ P9_23_gpio_pu_pin: pinmux_P9_23_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a1.gpio1_17 */
+ P9_23_gpio_pd_pin: pinmux_P9_23_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a1.gpio1_17 */
+ P9_23_gpio_input_pin: pinmux_P9_23_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0844, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_a1.gpio1_17 */
+ P9_23_pwm_pin: pinmux_P9_23_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_a1.ehrpwm0_synco */
+
+ /* P9_24 (ZCZ ball D15) gpio0_15 */
+ P9_24_default_pin: pinmux_P9_24_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_txd.gpio0_15 */
+ P9_24_gpio_pin: pinmux_P9_24_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart1_txd.gpio0_15 */
+ P9_24_gpio_pu_pin: pinmux_P9_24_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_txd.gpio0_15 */
+ P9_24_gpio_pd_pin: pinmux_P9_24_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart1_txd.gpio0_15 */
+ P9_24_gpio_input_pin: pinmux_P9_24_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_INPUT | MUX_MODE7) >; }; /* uart1_txd.gpio0_15 */
+ P9_24_uart_pin: pinmux_P9_24_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* uart1_txd.uart1_txd */
+ P9_24_can_pin: pinmux_P9_24_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_INPUT_PULLUP | MUX_MODE2) >; }; /* uart1_txd.dcan1_rx */
+ P9_24_i2c_pin: pinmux_P9_24_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_txd.i2c1_scl */
+ P9_24_pru_uart_pin: pinmux_P9_24_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; }; /* uart1_txd.pr1_uart0_txd */
+ P9_24_pruin_pin: pinmux_P9_24_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_INPUT | MUX_MODE6) >; }; /* uart1_txd.pru0_in16 */
+
+ /* P9_25 (ZCZ ball A14) audio */
+ P9_25_default_pin: pinmux_P9_25_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkx.gpio3_21 */
+ P9_25_gpio_pin: pinmux_P9_25_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkx.gpio3_21 */
+ P9_25_gpio_pu_pin: pinmux_P9_25_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkx.gpio3_21 */
+ P9_25_gpio_pd_pin: pinmux_P9_25_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkx.gpio3_21 */
+ P9_25_gpio_input_pin: pinmux_P9_25_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_ahclkx.gpio3_21 */
+ P9_25_qep_pin: pinmux_P9_25_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_ahclkx.eqep0_strobe */
+ P9_25_pruout_pin: pinmux_P9_25_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_ahclkx.pru0_out7 */
+ P9_25_pruin_pin: pinmux_P9_25_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_ahclkx.pru0_in7 */
+
+ /* P9_26 (ZCZ ball D16) gpio0_14 */
+ P9_26_default_pin: pinmux_P9_26_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_rxd.gpio0_14 */
+ P9_26_gpio_pin: pinmux_P9_26_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart1_rxd.gpio0_14 */
+ P9_26_gpio_pu_pin: pinmux_P9_26_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_rxd.gpio0_14 */
+ P9_26_gpio_pd_pin: pinmux_P9_26_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart1_rxd.gpio0_14 */
+ P9_26_gpio_input_pin: pinmux_P9_26_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_INPUT | MUX_MODE7) >; }; /* uart1_rxd.gpio0_14 */
+ P9_26_uart_pin: pinmux_P9_26_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* uart1_rxd.uart1_rxd */
+ P9_26_can_pin: pinmux_P9_26_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | MUX_MODE2) >; }; /* uart1_rxd.dcan1_tx */
+ P9_26_i2c_pin: pinmux_P9_26_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_rxd.i2c1_sda */
+ P9_26_pru_uart_pin: pinmux_P9_26_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; }; /* uart1_rxd.pr1_uart0_rxd */
+ P9_26_pruin_pin: pinmux_P9_26_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_INPUT | MUX_MODE6) >; }; /* uart1_rxd.pru1_in16 */
+
+ /* P9_27 (ZCZ ball C13) gpio3_19 */
+ P9_27_default_pin: pinmux_P9_27_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsr.gpio3_19 */
+ P9_27_gpio_pin: pinmux_P9_27_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsr.gpio3_19 */
+ P9_27_gpio_pu_pin: pinmux_P9_27_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsr.gpio3_19 */
+ P9_27_gpio_pd_pin: pinmux_P9_27_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsr.gpio3_19 */
+ P9_27_gpio_input_pin: pinmux_P9_27_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_fsr.gpio3_19 */
+ P9_27_qep_pin: pinmux_P9_27_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_fsr.eqep0b_in */
+ P9_27_pruout_pin: pinmux_P9_27_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_fsr.pru0_out5 */
+ P9_27_pruin_pin: pinmux_P9_27_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_fsr.pru0_in5 */
+
+ /* P9_28 (ZCZ ball C12) audio */
+ P9_28_default_pin: pinmux_P9_28_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkr.gpio3_17 */
+ P9_28_gpio_pin: pinmux_P9_28_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkr.gpio3_17 */
+ P9_28_gpio_pu_pin: pinmux_P9_28_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkr.gpio3_17 */
+ P9_28_gpio_pd_pin: pinmux_P9_28_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkr.gpio3_17 */
+ P9_28_gpio_input_pin: pinmux_P9_28_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_ahclkr.gpio3_17 */
+ P9_28_pwm_pin: pinmux_P9_28_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_ahclkr.ehrpwm0_synci */
+ P9_28_spi_cs_pin: pinmux_P9_28_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* mcasp0_ahclkr.spi1_cs0 */
+ P9_28_pwm2_pin: pinmux_P9_28_pwm2_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; }; /* mcasp0_ahclkr.ecap2_in_pwm2_out */
+ P9_28_pruout_pin: pinmux_P9_28_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_ahclkr.pru0_out3 */
+ P9_28_pruin_pin: pinmux_P9_28_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_ahclkr.pru0_in3 */
+
+ /* P9_29 (ZCZ ball B13) audio */
+ P9_29_default_pin: pinmux_P9_29_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsx.gpio3_15 */
+ P9_29_gpio_pin: pinmux_P9_29_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsx.gpio3_15 */
+ P9_29_gpio_pu_pin: pinmux_P9_29_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsx.gpio3_15 */
+ P9_29_gpio_pd_pin: pinmux_P9_29_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsx.gpio3_15 */
+ P9_29_gpio_input_pin: pinmux_P9_29_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_fsx.gpio3_15 */
+ P9_29_pwm_pin: pinmux_P9_29_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_fsx.ehrpwm0b */
+ P9_29_spi_pin: pinmux_P9_29_spi_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* mcasp0_fsx.spi1_d0 */
+ P9_29_pruout_pin: pinmux_P9_29_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_fsx.pru0_out1 */
+ P9_29_pruin_pin: pinmux_P9_29_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_fsx.pru0_in1 */
+
+ /* P9_30 (ZCZ ball D12) gpio3_16 */
+ P9_30_default_pin: pinmux_P9_30_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr0.gpio3_16 */
+ P9_30_gpio_pin: pinmux_P9_30_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr0.gpio3_16 */
+ P9_30_gpio_pu_pin: pinmux_P9_30_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr0.gpio3_16 */
+ P9_30_gpio_pd_pin: pinmux_P9_30_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr0.gpio3_16 */
+ P9_30_gpio_input_pin: pinmux_P9_30_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_axr0.gpio3_16 */
+ P9_30_pwm_pin: pinmux_P9_30_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_axr0.ehrpwm0_tripzone_input */
+ P9_30_spi_pin: pinmux_P9_30_spi_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* mcasp0_axr0.spi1_d1 */
+ P9_30_pruout_pin: pinmux_P9_30_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_axr0.pru0_out2 */
+ P9_30_pruin_pin: pinmux_P9_30_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_axr0.pru0_in2 */
+
+ /* P9_31 (ZCZ ball A13) audio */
+ P9_31_default_pin: pinmux_P9_31_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkx.gpio3_14 */
+ P9_31_gpio_pin: pinmux_P9_31_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkx.gpio3_14 */
+ P9_31_gpio_pu_pin: pinmux_P9_31_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkx.gpio3_14 */
+ P9_31_gpio_pd_pin: pinmux_P9_31_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkx.gpio3_14 */
+ P9_31_gpio_input_pin: pinmux_P9_31_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_aclkx.gpio3_14 */
+ P9_31_pwm_pin: pinmux_P9_31_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_aclkx.ehrpwm0a */
+ P9_31_spi_sclk_pin: pinmux_P9_31_spi_sclk_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* mcasp0_aclkx.spi1_sclk */
+ P9_31_pruout_pin: pinmux_P9_31_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_aclkx.pru0_out0 */
+ P9_31_pruin_pin: pinmux_P9_31_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_aclkx.pru0_in0 */
+
+ /* P9_32 VADC */
+
+ /* P9_33 (ZCZ ball C8) AIN4 */
+
+ /* P9_34 AGND */
+
+ /* P9_35 (ZCZ ball A8) AIN6 */
+
+ /* P9_36 (ZCZ ball B8) AIN5 */
+
+ /* P9_37 (ZCZ ball B7) AIN2 */
+
+ /* P9_38 (ZCZ ball A7) AIN3 */
+
+ /* P9_39 (ZCZ ball B6) AIN0 */
+
+ /* P9_40 (ZCZ ball C7) AIN1 */
+
+ /* P9_41 (ZCZ ball D14) gpio0_20 */
+ P9_41_default_pin: pinmux_P9_41_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P9_41_gpio_pin: pinmux_P9_41_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P9_41_gpio_pu_pin: pinmux_P9_41_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P9_41_gpio_pd_pin: pinmux_P9_41_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P9_41_gpio_input_pin: pinmux_P9_41_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_INPUT | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P9_41_timer_pin: pinmux_P9_41_timer_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* xdma_event_intr1.timer7 */
+ P9_41_pruin_pin: pinmux_P9_41_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_INPUT | MUX_MODE5) >; }; /* xdma_event_intr1.pru0_in16 */
+
+ /* P9_41.1 */
+ /* P9_91 (ZCZ ball D13) gpio3_20 */
+ P9_91_default_pin: pinmux_P9_91_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr1.gpio3_20 */
+ P9_91_gpio_pin: pinmux_P9_91_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr1.gpio3_20 */
+ P9_91_gpio_pu_pin: pinmux_P9_91_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr1.gpio3_20 */
+ P9_91_gpio_pd_pin: pinmux_P9_91_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr1.gpio3_20 */
+ P9_91_gpio_input_pin: pinmux_P9_91_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_axr1.gpio3_20 */
+ P9_91_qep_pin: pinmux_P9_91_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_axr1.eqep0_index */
+ P9_91_pruout_pin: pinmux_P9_91_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_axr1.pru0_out6 */
+ P9_91_pruin_pin: pinmux_P9_91_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_axr1.pru0_in6 */
+
+ /* P9_42 (ZCZ ball C18) gpio0_7 */
+ P9_42_default_pin: pinmux_P9_42_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* eCAP0_in_PWM0_out.gpio0_7 */
+ P9_42_gpio_pin: pinmux_P9_42_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* eCAP0_in_PWM0_out.gpio0_7 */
+ P9_42_gpio_pu_pin: pinmux_P9_42_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* eCAP0_in_PWM0_out.gpio0_7 */
+ P9_42_gpio_pd_pin: pinmux_P9_42_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* eCAP0_in_PWM0_out.gpio0_7 */
+ P9_42_gpio_input_pin: pinmux_P9_42_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_INPUT | MUX_MODE7) >; }; /* eCAP0_in_PWM0_out.gpio0_7 */
+ P9_42_pwm_pin: pinmux_P9_42_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE0) >; }; /* eCAP0_in_PWM0_out.ecap0_in_pwm0_out */
+ P9_42_uart_pin: pinmux_P9_42_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* eCAP0_in_PWM0_out.uart3_txd */
+ P9_42_spi_cs_pin: pinmux_P9_42_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* eCAP0_in_PWM0_out.spi1_cs1 */
+ P9_42_pru_ecap_pin: pinmux_P9_42_pru_ecap_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* eCAP0_in_PWM0_out.pr1_ecap0_ecap_capin_apwm_o */
+ P9_42_spi_sclk_pin: pinmux_P9_42_spi_sclk_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* eCAP0_in_PWM0_out.spi1_sclk */
+
+ /* P9_42.1 */
+ /* P9_92 (ZCZ ball B12) gpio3_18 */
+ P9_92_default_pin: pinmux_P9_92_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkr.gpio3_18 */
+ P9_92_gpio_pin: pinmux_P9_92_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkr.gpio3_18 */
+ P9_92_gpio_pu_pin: pinmux_P9_92_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkr.gpio3_18 */
+ P9_92_gpio_pd_pin: pinmux_P9_92_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkr.gpio3_18 */
+ P9_92_gpio_input_pin: pinmux_P9_92_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_aclkr.gpio3_18 */
+ P9_92_qep_pin: pinmux_P9_92_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_aclkr.eqep0a_in */
+ P9_92_pruout_pin: pinmux_P9_92_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_aclkr.pru0_out4 */
+ P9_92_pruin_pin: pinmux_P9_92_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_aclkr.pru0_in4 */
+
+ /* P9_43 GND */
+
+ /* P9_44 GND */
+
+ /* P9_45 GND */
+
+ /* P9_46 GND */
+};
+
+&i2c1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ clock-frequency = <100000>;
+};
+
+&i2c2 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ clock-frequency = <100000>;
+};
+
+&uart1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&uart2 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&uart3 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&uart4 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&uart5 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&dcan0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&dcan1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&eqep0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ count_mode = <0>; /* 0 - Quadrature mode, normal 90 phase offset cha & chb. 1 - Direction mode. cha input = clock, chb input = direction */
+ swap_inputs = <0>; /* Are channel A and channel B swapped? (0 - no, 1 - yes) */
+ invert_qa = <1>; /* Should we invert the channel A input? */
+ invert_qb = <1>; /* Should we invert the channel B input? I invert these because my encoder outputs drive transistors that pull down the pins */
+ invert_qi = <0>; /* Should we invert the index input? */
+ invert_qs = <0>; /* Should we invert the strobe input? */
+};
+
+&eqep1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ count_mode = <0>; /* 0 - Quadrature mode, normal 90 phase offset cha & chb. 1 - Direction mode. cha input = clock, chb input = direction */
+ swap_inputs = <0>; /* Are channel A and channel B swapped? (0 - no, 1 - yes) */
+ invert_qa = <1>; /* Should we invert the channel A input? */
+ invert_qb = <1>; /* Should we invert the channel B input? I invert these because my encoder outputs drive transistors that pull down the pins */
+ invert_qi = <0>; /* Should we invert the index input? */
+ invert_qs = <0>; /* Should we invert the strobe input? */
+};
+
+&eqep2 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ count_mode = <0>; /* 0 - Quadrature mode, normal 90 phase offset cha & chb. 1 - Direction mode. cha input = clock, chb input = direction */
+ swap_inputs = <0>; /* Are channel A and channel B swapped? (0 - no, 1 - yes) */
+ invert_qa = <1>; /* Should we invert the channel A input? */
+ invert_qb = <1>; /* Should we invert the channel B input? I invert these because my encoder outputs drive transistors that pull down the pins */
+ invert_qi = <0>; /* Should we invert the index input? */
+ invert_qs = <0>; /* Should we invert the strobe input? */
+};
+
+&epwmss0 {
+ status = "okay";
+};
+
+&epwmss1 {
+ status = "okay";
+};
+
+&epwmss2 {
+ status = "okay";
+};
+
+&ehrpwm0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&ehrpwm1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&ehrpwm2 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&ecap0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&ecap1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&ecap2 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&spi0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ channel@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compatible = "spidev";
+ symlink = "spi/0.0";
+
+ reg = <0>;
+ spi-max-frequency = <16000000>;
+ spi-cpha;
+ };
+
+ channel@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compatible = "spidev";
+ symlink = "spi/0.1";
+
+ reg = <1>;
+ spi-max-frequency = <16000000>;
+ };
+};
+
+&spi1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ channel@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compatible = "spidev";
+ symlink = "spi/1.0";
+
+ reg = <0>;
+ spi-max-frequency = <16000000>;
+ spi-cpha;
+ };
+
+ channel@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compatible = "spidev";
+ symlink = "spi/1.1";
+
+ reg = <1>;
+ spi-max-frequency = <16000000>;
+ };
+};
+
+/**********************************************************************/
+/* Pin Multiplex Helpers */
+/* */
+/* These provide userspace runtime pin configuration for the */
+/* BeagleBone cape expansion headers */
+/**********************************************************************/
+
+&ocp {
+ /************************/
+ /* P8 Header */
+ /************************/
+
+ /* P8_01 GND */
+
+ /* P8_02 GND */
+
+
+ /* P8_03 (ZCZ ball R9) emmc */
+ P8_03_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_03_default_pin>;
+ pinctrl-1 = <&P8_03_gpio_pin>;
+ pinctrl-2 = <&P8_03_gpio_pu_pin>;
+ pinctrl-3 = <&P8_03_gpio_pd_pin>;
+ pinctrl-4 = <&P8_03_gpio_input_pin>;
+ };
+
+ /* P8_04 (ZCZ ball T9) emmc */
+ P8_04_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_04_default_pin>;
+ pinctrl-1 = <&P8_04_gpio_pin>;
+ pinctrl-2 = <&P8_04_gpio_pu_pin>;
+ pinctrl-3 = <&P8_04_gpio_pd_pin>;
+ pinctrl-4 = <&P8_04_gpio_input_pin>;
+ };
+
+ /* P8_05 (ZCZ ball R8) emmc */
+ P8_05_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_05_default_pin>;
+ pinctrl-1 = <&P8_05_gpio_pin>;
+ pinctrl-2 = <&P8_05_gpio_pu_pin>;
+ pinctrl-3 = <&P8_05_gpio_pd_pin>;
+ pinctrl-4 = <&P8_05_gpio_input_pin>;
+ };
+
+ /* P8_06 (ZCZ ball T8) emmc */
+ P8_06_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_06_default_pin>;
+ pinctrl-1 = <&P8_06_gpio_pin>;
+ pinctrl-2 = <&P8_06_gpio_pu_pin>;
+ pinctrl-3 = <&P8_06_gpio_pd_pin>;
+ pinctrl-4 = <&P8_06_gpio_input_pin>;
+ };
+
+ /* P8_07 (ZCZ ball R7) */
+ P8_07_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+ pinctrl-0 = <&P8_07_default_pin>;
+ pinctrl-1 = <&P8_07_gpio_pin>;
+ pinctrl-2 = <&P8_07_gpio_pu_pin>;
+ pinctrl-3 = <&P8_07_gpio_pd_pin>;
+ pinctrl-4 = <&P8_07_gpio_input_pin>;
+ pinctrl-5 = <&P8_07_timer_pin>;
+ };
+
+ /* P8_08 (ZCZ ball T7) */
+ P8_08_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+ pinctrl-0 = <&P8_08_default_pin>;
+ pinctrl-1 = <&P8_08_gpio_pin>;
+ pinctrl-2 = <&P8_08_gpio_pu_pin>;
+ pinctrl-3 = <&P8_08_gpio_pd_pin>;
+ pinctrl-4 = <&P8_08_gpio_input_pin>;
+ pinctrl-5 = <&P8_08_timer_pin>;
+ };
+
+ /* P8_09 (ZCZ ball T6) */
+ P8_09_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+ pinctrl-0 = <&P8_09_default_pin>;
+ pinctrl-1 = <&P8_09_gpio_pin>;
+ pinctrl-2 = <&P8_09_gpio_pu_pin>;
+ pinctrl-3 = <&P8_09_gpio_pd_pin>;
+ pinctrl-4 = <&P8_09_gpio_input_pin>;
+ pinctrl-5 = <&P8_09_timer_pin>;
+ };
+
+ /* P8_10 (ZCZ ball U6) */
+ P8_10_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+ pinctrl-0 = <&P8_10_default_pin>;
+ pinctrl-1 = <&P8_10_gpio_pin>;
+ pinctrl-2 = <&P8_10_gpio_pu_pin>;
+ pinctrl-3 = <&P8_10_gpio_pd_pin>;
+ pinctrl-4 = <&P8_10_gpio_input_pin>;
+ pinctrl-5 = <&P8_10_timer_pin>;
+ };
+
+ /* P8_11 (ZCZ ball R12) */
+ P8_11_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout";
+ pinctrl-0 = <&P8_11_default_pin>;
+ pinctrl-1 = <&P8_11_gpio_pin>;
+ pinctrl-2 = <&P8_11_gpio_pu_pin>;
+ pinctrl-3 = <&P8_11_gpio_pd_pin>;
+ pinctrl-4 = <&P8_11_gpio_input_pin>;
+ pinctrl-5 = <&P8_11_qep_pin>;
+ pinctrl-6 = <&P8_11_pruout_pin>;
+ };
+
+ /* P8_12 (ZCZ ball T12) */
+ P8_12_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout";
+ pinctrl-0 = <&P8_12_default_pin>;
+ pinctrl-1 = <&P8_12_gpio_pin>;
+ pinctrl-2 = <&P8_12_gpio_pu_pin>;
+ pinctrl-3 = <&P8_12_gpio_pd_pin>;
+ pinctrl-4 = <&P8_12_gpio_input_pin>;
+ pinctrl-5 = <&P8_12_qep_pin>;
+ pinctrl-6 = <&P8_12_pruout_pin>;
+ };
+
+ /* P8_13 (ZCZ ball T10) */
+ P8_13_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P8_13_default_pin>;
+ pinctrl-1 = <&P8_13_gpio_pin>;
+ pinctrl-2 = <&P8_13_gpio_pu_pin>;
+ pinctrl-3 = <&P8_13_gpio_pd_pin>;
+ pinctrl-4 = <&P8_13_gpio_input_pin>;
+ pinctrl-5 = <&P8_13_pwm_pin>;
+ };
+
+ /* P8_14 (ZCZ ball T11) */
+ P8_14_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P8_14_default_pin>;
+ pinctrl-1 = <&P8_14_gpio_pin>;
+ pinctrl-2 = <&P8_14_gpio_pu_pin>;
+ pinctrl-3 = <&P8_14_gpio_pd_pin>;
+ pinctrl-4 = <&P8_14_gpio_input_pin>;
+ pinctrl-5 = <&P8_14_pwm_pin>;
+ };
+
+ /* P8_15 (ZCZ ball U13) */
+ P8_15_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pru_ecap", "pruin";
+ pinctrl-0 = <&P8_15_default_pin>;
+ pinctrl-1 = <&P8_15_gpio_pin>;
+ pinctrl-2 = <&P8_15_gpio_pu_pin>;
+ pinctrl-3 = <&P8_15_gpio_pd_pin>;
+ pinctrl-4 = <&P8_15_gpio_input_pin>;
+ pinctrl-5 = <&P8_15_qep_pin>;
+ pinctrl-6 = <&P8_15_pru_ecap_pin>;
+ pinctrl-7 = <&P8_15_pruin_pin>;
+ };
+
+ /* P8_16 (ZCZ ball V13) */
+ P8_16_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruin";
+ pinctrl-0 = <&P8_16_default_pin>;
+ pinctrl-1 = <&P8_16_gpio_pin>;
+ pinctrl-2 = <&P8_16_gpio_pu_pin>;
+ pinctrl-3 = <&P8_16_gpio_pd_pin>;
+ pinctrl-4 = <&P8_16_gpio_input_pin>;
+ pinctrl-5 = <&P8_16_qep_pin>;
+ pinctrl-6 = <&P8_16_pruin_pin>;
+ };
+
+ /* P8_17 (ZCZ ball U12) */
+ P8_17_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P8_17_default_pin>;
+ pinctrl-1 = <&P8_17_gpio_pin>;
+ pinctrl-2 = <&P8_17_gpio_pu_pin>;
+ pinctrl-3 = <&P8_17_gpio_pd_pin>;
+ pinctrl-4 = <&P8_17_gpio_input_pin>;
+ pinctrl-5 = <&P8_17_pwm_pin>;
+ };
+
+ /* P8_18 (ZCZ ball V12) */
+ P8_18_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_18_default_pin>;
+ pinctrl-1 = <&P8_18_gpio_pin>;
+ pinctrl-2 = <&P8_18_gpio_pu_pin>;
+ pinctrl-3 = <&P8_18_gpio_pd_pin>;
+ pinctrl-4 = <&P8_18_gpio_input_pin>;
+ };
+
+ /* P8_19 (ZCZ ball U10) */
+ P8_19_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P8_19_default_pin>;
+ pinctrl-1 = <&P8_19_gpio_pin>;
+ pinctrl-2 = <&P8_19_gpio_pu_pin>;
+ pinctrl-3 = <&P8_19_gpio_pd_pin>;
+ pinctrl-4 = <&P8_19_gpio_input_pin>;
+ pinctrl-5 = <&P8_19_pwm_pin>;
+ };
+
+ /* P8_20 (ZCZ ball V9) emmc */
+ P8_20_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P8_20_default_pin>;
+ pinctrl-1 = <&P8_20_gpio_pin>;
+ pinctrl-2 = <&P8_20_gpio_pu_pin>;
+ pinctrl-3 = <&P8_20_gpio_pd_pin>;
+ pinctrl-4 = <&P8_20_gpio_input_pin>;
+ pinctrl-5 = <&P8_20_pruout_pin>;
+ pinctrl-6 = <&P8_20_pruin_pin>;
+ };
+
+ /* P8_21 (ZCZ ball U9) emmc */
+ P8_21_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P8_21_default_pin>;
+ pinctrl-1 = <&P8_21_gpio_pin>;
+ pinctrl-2 = <&P8_21_gpio_pu_pin>;
+ pinctrl-3 = <&P8_21_gpio_pd_pin>;
+ pinctrl-4 = <&P8_21_gpio_input_pin>;
+ pinctrl-5 = <&P8_21_pruout_pin>;
+ pinctrl-6 = <&P8_21_pruin_pin>;
+ };
+
+ /* P8_22 (ZCZ ball V8) emmc */
+ P8_22_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_22_default_pin>;
+ pinctrl-1 = <&P8_22_gpio_pin>;
+ pinctrl-2 = <&P8_22_gpio_pu_pin>;
+ pinctrl-3 = <&P8_22_gpio_pd_pin>;
+ pinctrl-4 = <&P8_22_gpio_input_pin>;
+ };
+
+ /* P8_23 (ZCZ ball U8) emmc */
+ P8_23_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_23_default_pin>;
+ pinctrl-1 = <&P8_23_gpio_pin>;
+ pinctrl-2 = <&P8_23_gpio_pu_pin>;
+ pinctrl-3 = <&P8_23_gpio_pd_pin>;
+ pinctrl-4 = <&P8_23_gpio_input_pin>;
+ };
+
+ /* P8_24 (ZCZ ball V7) emmc */
+ P8_24_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_24_default_pin>;
+ pinctrl-1 = <&P8_24_gpio_pin>;
+ pinctrl-2 = <&P8_24_gpio_pu_pin>;
+ pinctrl-3 = <&P8_24_gpio_pd_pin>;
+ pinctrl-4 = <&P8_24_gpio_input_pin>;
+ };
+
+ /* P8_25 (ZCZ ball U7) emmc */
+ P8_25_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_25_default_pin>;
+ pinctrl-1 = <&P8_25_gpio_pin>;
+ pinctrl-2 = <&P8_25_gpio_pu_pin>;
+ pinctrl-3 = <&P8_25_gpio_pd_pin>;
+ pinctrl-4 = <&P8_25_gpio_input_pin>;
+ };
+
+ /* P8_26 (ZCZ ball V6) */
+ P8_26_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_26_default_pin>;
+ pinctrl-1 = <&P8_26_gpio_pin>;
+ pinctrl-2 = <&P8_26_gpio_pu_pin>;
+ pinctrl-3 = <&P8_26_gpio_pd_pin>;
+ pinctrl-4 = <&P8_26_gpio_input_pin>;
+ };
+
+ /* P8_27 (ZCZ ball U5) hdmi */
+ P8_27_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P8_27_default_pin>;
+ pinctrl-1 = <&P8_27_gpio_pin>;
+ pinctrl-2 = <&P8_27_gpio_pu_pin>;
+ pinctrl-3 = <&P8_27_gpio_pd_pin>;
+ pinctrl-4 = <&P8_27_gpio_input_pin>;
+ pinctrl-5 = <&P8_27_pruout_pin>;
+ pinctrl-6 = <&P8_27_pruin_pin>;
+ };
+
+ /* P8_28 (ZCZ ball V5) hdmi */
+ P8_28_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P8_28_default_pin>;
+ pinctrl-1 = <&P8_28_gpio_pin>;
+ pinctrl-2 = <&P8_28_gpio_pu_pin>;
+ pinctrl-3 = <&P8_28_gpio_pd_pin>;
+ pinctrl-4 = <&P8_28_gpio_input_pin>;
+ pinctrl-5 = <&P8_28_pruout_pin>;
+ pinctrl-6 = <&P8_28_pruin_pin>;
+ };
+
+ /* P8_29 (ZCZ ball R5) hdmi */
+ P8_29_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P8_29_default_pin>;
+ pinctrl-1 = <&P8_29_gpio_pin>;
+ pinctrl-2 = <&P8_29_gpio_pu_pin>;
+ pinctrl-3 = <&P8_29_gpio_pd_pin>;
+ pinctrl-4 = <&P8_29_gpio_input_pin>;
+ pinctrl-5 = <&P8_29_pruout_pin>;
+ pinctrl-6 = <&P8_29_pruin_pin>;
+ };
+
+ /* P8_30 (ZCZ ball R6) hdmi */
+ P8_30_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P8_30_default_pin>;
+ pinctrl-1 = <&P8_30_gpio_pin>;
+ pinctrl-2 = <&P8_30_gpio_pu_pin>;
+ pinctrl-3 = <&P8_30_gpio_pd_pin>;
+ pinctrl-4 = <&P8_30_gpio_input_pin>;
+ pinctrl-5 = <&P8_30_pruout_pin>;
+ pinctrl-6 = <&P8_30_pruin_pin>;
+ };
+
+ /* P8_31 (ZCZ ball V4) hdmi */
+ P8_31_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "qep";
+ pinctrl-0 = <&P8_31_default_pin>;
+ pinctrl-1 = <&P8_31_gpio_pin>;
+ pinctrl-2 = <&P8_31_gpio_pu_pin>;
+ pinctrl-3 = <&P8_31_gpio_pd_pin>;
+ pinctrl-4 = <&P8_31_gpio_input_pin>;
+ pinctrl-5 = <&P8_31_uart_pin>;
+ pinctrl-6 = <&P8_31_qep_pin>;
+ };
+
+ /* P8_32 (ZCZ ball T5) hdmi */
+ P8_32_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep";
+ pinctrl-0 = <&P8_32_default_pin>;
+ pinctrl-1 = <&P8_32_gpio_pin>;
+ pinctrl-2 = <&P8_32_gpio_pu_pin>;
+ pinctrl-3 = <&P8_32_gpio_pd_pin>;
+ pinctrl-4 = <&P8_32_gpio_input_pin>;
+ pinctrl-5 = <&P8_32_qep_pin>;
+ };
+
+ /* P8_33 (ZCZ ball V3) hdmi */
+ P8_33_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep";
+ pinctrl-0 = <&P8_33_default_pin>;
+ pinctrl-1 = <&P8_33_gpio_pin>;
+ pinctrl-2 = <&P8_33_gpio_pu_pin>;
+ pinctrl-3 = <&P8_33_gpio_pd_pin>;
+ pinctrl-4 = <&P8_33_gpio_input_pin>;
+ pinctrl-5 = <&P8_33_qep_pin>;
+ };
+
+ /* P8_34 (ZCZ ball U4) hdmi */
+ P8_34_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P8_34_default_pin>;
+ pinctrl-1 = <&P8_34_gpio_pin>;
+ pinctrl-2 = <&P8_34_gpio_pu_pin>;
+ pinctrl-3 = <&P8_34_gpio_pd_pin>;
+ pinctrl-4 = <&P8_34_gpio_input_pin>;
+ pinctrl-5 = <&P8_34_pwm_pin>;
+ };
+
+ /* P8_35 (ZCZ ball V2) hdmi */
+ P8_35_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep";
+ pinctrl-0 = <&P8_35_default_pin>;
+ pinctrl-1 = <&P8_35_gpio_pin>;
+ pinctrl-2 = <&P8_35_gpio_pu_pin>;
+ pinctrl-3 = <&P8_35_gpio_pd_pin>;
+ pinctrl-4 = <&P8_35_gpio_input_pin>;
+ pinctrl-5 = <&P8_35_qep_pin>;
+ };
+
+ /* P8_36 (ZCZ ball U3) hdmi */
+ P8_36_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P8_36_default_pin>;
+ pinctrl-1 = <&P8_36_gpio_pin>;
+ pinctrl-2 = <&P8_36_gpio_pu_pin>;
+ pinctrl-3 = <&P8_36_gpio_pd_pin>;
+ pinctrl-4 = <&P8_36_gpio_input_pin>;
+ pinctrl-5 = <&P8_36_pwm_pin>;
+ };
+
+ /* P8_37 (ZCZ ball U1) hdmi */
+ P8_37_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "pwm";
+ pinctrl-0 = <&P8_37_default_pin>;
+ pinctrl-1 = <&P8_37_gpio_pin>;
+ pinctrl-2 = <&P8_37_gpio_pu_pin>;
+ pinctrl-3 = <&P8_37_gpio_pd_pin>;
+ pinctrl-4 = <&P8_37_gpio_input_pin>;
+ pinctrl-5 = <&P8_37_uart_pin>;
+ pinctrl-6 = <&P8_37_pwm_pin>;
+ };
+
+ /* P8_38 (ZCZ ball U2) hdmi */
+ P8_38_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "pwm";
+ pinctrl-0 = <&P8_38_default_pin>;
+ pinctrl-1 = <&P8_38_gpio_pin>;
+ pinctrl-2 = <&P8_38_gpio_pu_pin>;
+ pinctrl-3 = <&P8_38_gpio_pd_pin>;
+ pinctrl-4 = <&P8_38_gpio_input_pin>;
+ pinctrl-5 = <&P8_38_uart_pin>;
+ pinctrl-6 = <&P8_38_pwm_pin>;
+ };
+
+ /* P8_39 (ZCZ ball T3) hdmi */
+ P8_39_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P8_39_default_pin>;
+ pinctrl-1 = <&P8_39_gpio_pin>;
+ pinctrl-2 = <&P8_39_gpio_pu_pin>;
+ pinctrl-3 = <&P8_39_gpio_pd_pin>;
+ pinctrl-4 = <&P8_39_gpio_input_pin>;
+ pinctrl-5 = <&P8_39_qep_pin>;
+ pinctrl-6 = <&P8_39_pruout_pin>;
+ pinctrl-7 = <&P8_39_pruin_pin>;
+ };
+
+ /* P8_40 (ZCZ ball T4) hdmi */
+ P8_40_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P8_40_default_pin>;
+ pinctrl-1 = <&P8_40_gpio_pin>;
+ pinctrl-2 = <&P8_40_gpio_pu_pin>;
+ pinctrl-3 = <&P8_40_gpio_pd_pin>;
+ pinctrl-4 = <&P8_40_gpio_input_pin>;
+ pinctrl-5 = <&P8_40_qep_pin>;
+ pinctrl-6 = <&P8_40_pruout_pin>;
+ pinctrl-7 = <&P8_40_pruin_pin>;
+ };
+
+ /* P8_41 (ZCZ ball T1) hdmi */
+ P8_41_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P8_41_default_pin>;
+ pinctrl-1 = <&P8_41_gpio_pin>;
+ pinctrl-2 = <&P8_41_gpio_pu_pin>;
+ pinctrl-3 = <&P8_41_gpio_pd_pin>;
+ pinctrl-4 = <&P8_41_gpio_input_pin>;
+ pinctrl-5 = <&P8_41_qep_pin>;
+ pinctrl-6 = <&P8_41_pruout_pin>;
+ pinctrl-7 = <&P8_41_pruin_pin>;
+ };
+
+ /* P8_42 (ZCZ ball T2) hdmi */
+ P8_42_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P8_42_default_pin>;
+ pinctrl-1 = <&P8_42_gpio_pin>;
+ pinctrl-2 = <&P8_42_gpio_pu_pin>;
+ pinctrl-3 = <&P8_42_gpio_pd_pin>;
+ pinctrl-4 = <&P8_42_gpio_input_pin>;
+ pinctrl-5 = <&P8_42_qep_pin>;
+ pinctrl-6 = <&P8_42_pruout_pin>;
+ pinctrl-7 = <&P8_42_pruin_pin>;
+ };
+
+ /* P8_43 (ZCZ ball R3) hdmi */
+ P8_43_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P8_43_default_pin>;
+ pinctrl-1 = <&P8_43_gpio_pin>;
+ pinctrl-2 = <&P8_43_gpio_pu_pin>;
+ pinctrl-3 = <&P8_43_gpio_pd_pin>;
+ pinctrl-4 = <&P8_43_gpio_input_pin>;
+ pinctrl-5 = <&P8_43_pwm_pin>;
+ pinctrl-6 = <&P8_43_pruout_pin>;
+ pinctrl-7 = <&P8_43_pruin_pin>;
+ };
+
+ /* P8_44 (ZCZ ball R4) hdmi */
+ P8_44_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P8_44_default_pin>;
+ pinctrl-1 = <&P8_44_gpio_pin>;
+ pinctrl-2 = <&P8_44_gpio_pu_pin>;
+ pinctrl-3 = <&P8_44_gpio_pd_pin>;
+ pinctrl-4 = <&P8_44_gpio_input_pin>;
+ pinctrl-5 = <&P8_44_pwm_pin>;
+ pinctrl-6 = <&P8_44_pruout_pin>;
+ pinctrl-7 = <&P8_44_pruin_pin>;
+ };
+
+ /* P8_45 (ZCZ ball R1) hdmi */
+ P8_45_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P8_45_default_pin>;
+ pinctrl-1 = <&P8_45_gpio_pin>;
+ pinctrl-2 = <&P8_45_gpio_pu_pin>;
+ pinctrl-3 = <&P8_45_gpio_pd_pin>;
+ pinctrl-4 = <&P8_45_gpio_input_pin>;
+ pinctrl-5 = <&P8_45_pwm_pin>;
+ pinctrl-6 = <&P8_45_pruout_pin>;
+ pinctrl-7 = <&P8_45_pruin_pin>;
+ };
+
+ /* P8_46 (ZCZ ball R2) hdmi */
+ P8_46_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P8_46_default_pin>;
+ pinctrl-1 = <&P8_46_gpio_pin>;
+ pinctrl-2 = <&P8_46_gpio_pu_pin>;
+ pinctrl-3 = <&P8_46_gpio_pd_pin>;
+ pinctrl-4 = <&P8_46_gpio_input_pin>;
+ pinctrl-5 = <&P8_46_pwm_pin>;
+ pinctrl-6 = <&P8_46_pruout_pin>;
+ pinctrl-7 = <&P8_46_pruin_pin>;
+ };
+
+ /************************/
+ /* P9 Header */
+ /************************/
+
+ /* P9_01 GND */
+
+ /* P9_02 GND */
+
+ /* P9_03 3V3 */
+
+ /* P9_04 3V3 */
+
+ /* P9_05 VDD_5V */
+
+ /* P9_06 VDD_5V */
+
+ /* P9_07 SYS_5V */
+
+ /* P9_08 SYS_5V */
+
+ /* P9_09 PWR_BUT */
+
+ /* P9_10 RSTn */
+
+ /* P9_11 (ZCZ ball T17) */
+ P9_11_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart";
+ pinctrl-0 = <&P9_11_default_pin>;
+ pinctrl-1 = <&P9_11_gpio_pin>;
+ pinctrl-2 = <&P9_11_gpio_pu_pin>;
+ pinctrl-3 = <&P9_11_gpio_pd_pin>;
+ pinctrl-4 = <&P9_11_gpio_input_pin>;
+ pinctrl-5 = <&P9_11_uart_pin>;
+ };
+
+ /* P9_12 (ZCZ ball U18) */
+ P9_12_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P9_12_default_pin>;
+ pinctrl-1 = <&P9_12_gpio_pin>;
+ pinctrl-2 = <&P9_12_gpio_pu_pin>;
+ pinctrl-3 = <&P9_12_gpio_pd_pin>;
+ pinctrl-4 = <&P9_12_gpio_input_pin>;
+ };
+
+ /* P9_13 (ZCZ ball U17) */
+ P9_13_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart";
+ pinctrl-0 = <&P9_13_default_pin>;
+ pinctrl-1 = <&P9_13_gpio_pin>;
+ pinctrl-2 = <&P9_13_gpio_pu_pin>;
+ pinctrl-3 = <&P9_13_gpio_pd_pin>;
+ pinctrl-4 = <&P9_13_gpio_input_pin>;
+ pinctrl-5 = <&P9_13_uart_pin>;
+ };
+
+ /* P9_14 (ZCZ ball U14) */
+ P9_14_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P9_14_default_pin>;
+ pinctrl-1 = <&P9_14_gpio_pin>;
+ pinctrl-2 = <&P9_14_gpio_pu_pin>;
+ pinctrl-3 = <&P9_14_gpio_pd_pin>;
+ pinctrl-4 = <&P9_14_gpio_input_pin>;
+ pinctrl-5 = <&P9_14_pwm_pin>;
+ };
+
+ /* P9_15 (ZCZ ball R13) */
+ P9_15_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P9_15_default_pin>;
+ pinctrl-1 = <&P9_15_gpio_pin>;
+ pinctrl-2 = <&P9_15_gpio_pu_pin>;
+ pinctrl-3 = <&P9_15_gpio_pd_pin>;
+ pinctrl-4 = <&P9_15_gpio_input_pin>;
+ pinctrl-5 = <&P9_15_pwm_pin>;
+ };
+
+ /* P9_16 (ZCZ ball T14) */
+ P9_16_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P9_16_default_pin>;
+ pinctrl-1 = <&P9_16_gpio_pin>;
+ pinctrl-2 = <&P9_16_gpio_pu_pin>;
+ pinctrl-3 = <&P9_16_gpio_pd_pin>;
+ pinctrl-4 = <&P9_16_gpio_input_pin>;
+ pinctrl-5 = <&P9_16_pwm_pin>;
+ };
+
+ /* P9_17 (ZCZ ball A16) */
+ P9_17_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "i2c", "pwm", "pru_uart";
+ pinctrl-0 = <&P9_17_default_pin>;
+ pinctrl-1 = <&P9_17_gpio_pin>;
+ pinctrl-2 = <&P9_17_gpio_pu_pin>;
+ pinctrl-3 = <&P9_17_gpio_pd_pin>;
+ pinctrl-4 = <&P9_17_gpio_input_pin>;
+ pinctrl-5 = <&P9_17_spi_cs_pin>;
+ pinctrl-6 = <&P9_17_i2c_pin>;
+ pinctrl-7 = <&P9_17_pwm_pin>;
+ pinctrl-8 = <&P9_17_pru_uart_pin>;
+ };
+
+ /* P9_18 (ZCZ ball B16) */
+ P9_18_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "i2c", "pwm", "pru_uart";
+ pinctrl-0 = <&P9_18_default_pin>;
+ pinctrl-1 = <&P9_18_gpio_pin>;
+ pinctrl-2 = <&P9_18_gpio_pu_pin>;
+ pinctrl-3 = <&P9_18_gpio_pd_pin>;
+ pinctrl-4 = <&P9_18_gpio_input_pin>;
+ pinctrl-5 = <&P9_18_spi_pin>;
+ pinctrl-6 = <&P9_18_i2c_pin>;
+ pinctrl-7 = <&P9_18_pwm_pin>;
+ pinctrl-8 = <&P9_18_pru_uart_pin>;
+ };
+
+ /* P9_19 (ZCZ ball D17) i2c */
+ P9_19_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "can", "i2c", "pru_uart", "timer";
+ pinctrl-0 = <&P9_19_default_pin>;
+ pinctrl-1 = <&P9_19_gpio_pin>;
+ pinctrl-2 = <&P9_19_gpio_pu_pin>;
+ pinctrl-3 = <&P9_19_gpio_pd_pin>;
+ pinctrl-4 = <&P9_19_gpio_input_pin>;
+ pinctrl-5 = <&P9_19_spi_cs_pin>;
+ pinctrl-6 = <&P9_19_can_pin>;
+ pinctrl-7 = <&P9_19_i2c_pin>;
+ pinctrl-8 = <&P9_19_pru_uart_pin>;
+ pinctrl-9 = <&P9_19_timer_pin>;
+ };
+
+ /* P9_20 (ZCZ ball D18) i2c */
+ P9_20_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "can", "i2c", "pru_uart", "timer";
+ pinctrl-0 = <&P9_20_default_pin>;
+ pinctrl-1 = <&P9_20_gpio_pin>;
+ pinctrl-2 = <&P9_20_gpio_pu_pin>;
+ pinctrl-3 = <&P9_20_gpio_pd_pin>;
+ pinctrl-4 = <&P9_20_gpio_input_pin>;
+ pinctrl-5 = <&P9_20_spi_cs_pin>;
+ pinctrl-6 = <&P9_20_can_pin>;
+ pinctrl-7 = <&P9_20_i2c_pin>;
+ pinctrl-8 = <&P9_20_pru_uart_pin>;
+ pinctrl-9 = <&P9_20_timer_pin>;
+ };
+
+ /* P9_21 (ZCZ ball B17) */
+ P9_21_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "uart", "i2c", "pwm", "pru_uart";
+ pinctrl-0 = <&P9_21_default_pin>;
+ pinctrl-1 = <&P9_21_gpio_pin>;
+ pinctrl-2 = <&P9_21_gpio_pu_pin>;
+ pinctrl-3 = <&P9_21_gpio_pd_pin>;
+ pinctrl-4 = <&P9_21_gpio_input_pin>;
+ pinctrl-5 = <&P9_21_spi_pin>;
+ pinctrl-6 = <&P9_21_uart_pin>;
+ pinctrl-7 = <&P9_21_i2c_pin>;
+ pinctrl-8 = <&P9_21_pwm_pin>;
+ pinctrl-9 = <&P9_21_pru_uart_pin>;
+ };
+
+ /* P9_22 (ZCZ ball A17) */
+ P9_22_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_sclk", "uart", "i2c", "pwm", "pru_uart";
+ pinctrl-0 = <&P9_22_default_pin>;
+ pinctrl-1 = <&P9_22_gpio_pin>;
+ pinctrl-2 = <&P9_22_gpio_pu_pin>;
+ pinctrl-3 = <&P9_22_gpio_pd_pin>;
+ pinctrl-4 = <&P9_22_gpio_input_pin>;
+ pinctrl-5 = <&P9_22_spi_sclk_pin>;
+ pinctrl-6 = <&P9_22_uart_pin>;
+ pinctrl-7 = <&P9_22_i2c_pin>;
+ pinctrl-8 = <&P9_22_pwm_pin>;
+ pinctrl-9 = <&P9_22_pru_uart_pin>;
+ };
+
+ /* P9_23 (ZCZ ball V14) */
+ P9_23_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P9_23_default_pin>;
+ pinctrl-1 = <&P9_23_gpio_pin>;
+ pinctrl-2 = <&P9_23_gpio_pu_pin>;
+ pinctrl-3 = <&P9_23_gpio_pd_pin>;
+ pinctrl-4 = <&P9_23_gpio_input_pin>;
+ pinctrl-5 = <&P9_23_pwm_pin>;
+ };
+
+ /* P9_24 (ZCZ ball D15) */
+ P9_24_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "can", "i2c", "pru_uart", "pruin";
+ pinctrl-0 = <&P9_24_default_pin>;
+ pinctrl-1 = <&P9_24_gpio_pin>;
+ pinctrl-2 = <&P9_24_gpio_pu_pin>;
+ pinctrl-3 = <&P9_24_gpio_pd_pin>;
+ pinctrl-4 = <&P9_24_gpio_input_pin>;
+ pinctrl-5 = <&P9_24_uart_pin>;
+ pinctrl-6 = <&P9_24_can_pin>;
+ pinctrl-7 = <&P9_24_i2c_pin>;
+ pinctrl-8 = <&P9_24_pru_uart_pin>;
+ pinctrl-9 = <&P9_24_pruin_pin>;
+ };
+
+ /* P9_25 (ZCZ ball A14) audio */
+ P9_25_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P9_25_default_pin>;
+ pinctrl-1 = <&P9_25_gpio_pin>;
+ pinctrl-2 = <&P9_25_gpio_pu_pin>;
+ pinctrl-3 = <&P9_25_gpio_pd_pin>;
+ pinctrl-4 = <&P9_25_gpio_input_pin>;
+ pinctrl-5 = <&P9_25_qep_pin>;
+ pinctrl-6 = <&P9_25_pruout_pin>;
+ pinctrl-7 = <&P9_25_pruin_pin>;
+ };
+
+ /* P9_26 (ZCZ ball D16) */
+ P9_26_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "can", "i2c", "pru_uart", "pruin";
+ pinctrl-0 = <&P9_26_default_pin>;
+ pinctrl-1 = <&P9_26_gpio_pin>;
+ pinctrl-2 = <&P9_26_gpio_pu_pin>;
+ pinctrl-3 = <&P9_26_gpio_pd_pin>;
+ pinctrl-4 = <&P9_26_gpio_input_pin>;
+ pinctrl-5 = <&P9_26_uart_pin>;
+ pinctrl-6 = <&P9_26_can_pin>;
+ pinctrl-7 = <&P9_26_i2c_pin>;
+ pinctrl-8 = <&P9_26_pru_uart_pin>;
+ pinctrl-9 = <&P9_26_pruin_pin>;
+ };
+
+ /* P9_27 (ZCZ ball C13) */
+ P9_27_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P9_27_default_pin>;
+ pinctrl-1 = <&P9_27_gpio_pin>;
+ pinctrl-2 = <&P9_27_gpio_pu_pin>;
+ pinctrl-3 = <&P9_27_gpio_pd_pin>;
+ pinctrl-4 = <&P9_27_gpio_input_pin>;
+ pinctrl-5 = <&P9_27_qep_pin>;
+ pinctrl-6 = <&P9_27_pruout_pin>;
+ pinctrl-7 = <&P9_27_pruin_pin>;
+ };
+
+ /* P9_28 (ZCZ ball C12) audio */
+ P9_28_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "pwm", "pwm2", "pruout", "pruin";
+ pinctrl-0 = <&P9_28_default_pin>;
+ pinctrl-1 = <&P9_28_gpio_pin>;
+ pinctrl-2 = <&P9_28_gpio_pu_pin>;
+ pinctrl-3 = <&P9_28_gpio_pd_pin>;
+ pinctrl-4 = <&P9_28_gpio_input_pin>;
+ pinctrl-5 = <&P9_28_spi_cs_pin>;
+ pinctrl-6 = <&P9_28_pwm_pin>;
+ pinctrl-7 = <&P9_28_pwm2_pin>;
+ pinctrl-8 = <&P9_28_pruout_pin>;
+ pinctrl-9 = <&P9_28_pruin_pin>;
+ };
+
+ /* P9_29 (ZCZ ball B13) audio */
+ P9_29_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P9_29_default_pin>;
+ pinctrl-1 = <&P9_29_gpio_pin>;
+ pinctrl-2 = <&P9_29_gpio_pu_pin>;
+ pinctrl-3 = <&P9_29_gpio_pd_pin>;
+ pinctrl-4 = <&P9_29_gpio_input_pin>;
+ pinctrl-5 = <&P9_29_spi_pin>;
+ pinctrl-6 = <&P9_29_pwm_pin>;
+ pinctrl-7 = <&P9_29_pruout_pin>;
+ pinctrl-8 = <&P9_29_pruin_pin>;
+ };
+
+ /* P9_30 (ZCZ ball D12) */
+ P9_30_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P9_30_default_pin>;
+ pinctrl-1 = <&P9_30_gpio_pin>;
+ pinctrl-2 = <&P9_30_gpio_pu_pin>;
+ pinctrl-3 = <&P9_30_gpio_pd_pin>;
+ pinctrl-4 = <&P9_30_gpio_input_pin>;
+ pinctrl-5 = <&P9_30_spi_pin>;
+ pinctrl-6 = <&P9_30_pwm_pin>;
+ pinctrl-7 = <&P9_30_pruout_pin>;
+ pinctrl-8 = <&P9_30_pruin_pin>;
+ };
+
+ /* P9_31 (ZCZ ball A13) audio */
+ P9_31_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_sclk", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P9_31_default_pin>;
+ pinctrl-1 = <&P9_31_gpio_pin>;
+ pinctrl-2 = <&P9_31_gpio_pu_pin>;
+ pinctrl-3 = <&P9_31_gpio_pd_pin>;
+ pinctrl-4 = <&P9_31_gpio_input_pin>;
+ pinctrl-5 = <&P9_31_spi_sclk_pin>;
+ pinctrl-6 = <&P9_31_pwm_pin>;
+ pinctrl-7 = <&P9_31_pruout_pin>;
+ pinctrl-8 = <&P9_31_pruin_pin>;
+ };
+
+ /* P9_32 VADC */
+
+ /* P9_33 (ZCZ ball C8) AIN4 */
+
+ /* P9_34 AGND */
+
+ /* P9_35 (ZCZ ball A8) AIN6 */
+
+ /* P9_36 (ZCZ ball B8) AIN5 */
+
+ /* P9_37 (ZCZ ball B7) AIN2 */
+
+ /* P9_38 (ZCZ ball A7) AIN3 */
+
+ /* P9_39 (ZCZ ball B6) AIN0 */
+
+ /* P9_40 (ZCZ ball C7) AIN1 */
+
+ /* P9_41 (ZCZ ball D14) */
+ P9_41_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer", "pruin";
+ pinctrl-0 = <&P9_41_default_pin>;
+ pinctrl-1 = <&P9_41_gpio_pin>;
+ pinctrl-2 = <&P9_41_gpio_pu_pin>;
+ pinctrl-3 = <&P9_41_gpio_pd_pin>;
+ pinctrl-4 = <&P9_41_gpio_input_pin>;
+ pinctrl-5 = <&P9_41_timer_pin>;
+ pinctrl-6 = <&P9_41_pruin_pin>;
+ };
+
+ /* P9_41.1 */
+ /* P9_91 (ZCZ ball D13) */
+ P9_91_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P9_91_default_pin>;
+ pinctrl-1 = <&P9_91_gpio_pin>;
+ pinctrl-2 = <&P9_91_gpio_pu_pin>;
+ pinctrl-3 = <&P9_91_gpio_pd_pin>;
+ pinctrl-4 = <&P9_91_gpio_input_pin>;
+ pinctrl-5 = <&P9_91_qep_pin>;
+ pinctrl-6 = <&P9_91_pruout_pin>;
+ pinctrl-7 = <&P9_91_pruin_pin>;
+ };
+
+ /* P9_42 (ZCZ ball C18) */
+ P9_42_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "spi_sclk", "uart", "pwm", "pru_ecap";
+ pinctrl-0 = <&P9_42_default_pin>;
+ pinctrl-1 = <&P9_42_gpio_pin>;
+ pinctrl-2 = <&P9_42_gpio_pu_pin>;
+ pinctrl-3 = <&P9_42_gpio_pd_pin>;
+ pinctrl-4 = <&P9_42_gpio_input_pin>;
+ pinctrl-5 = <&P9_42_spi_cs_pin>;
+ pinctrl-6 = <&P9_42_spi_sclk_pin>;
+ pinctrl-7 = <&P9_42_uart_pin>;
+ pinctrl-8 = <&P9_42_pwm_pin>;
+ pinctrl-9 = <&P9_42_pru_ecap_pin>;
+ };
+
+ /* P9_42.1 */
+ /* P9_92 (ZCZ ball B12) */
+ P9_92_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P9_92_default_pin>;
+ pinctrl-1 = <&P9_92_gpio_pin>;
+ pinctrl-2 = <&P9_92_gpio_pu_pin>;
+ pinctrl-3 = <&P9_92_gpio_pd_pin>;
+ pinctrl-4 = <&P9_92_gpio_input_pin>;
+ pinctrl-5 = <&P9_92_qep_pin>;
+ pinctrl-6 = <&P9_92_pruout_pin>;
+ pinctrl-7 = <&P9_92_pruin_pin>;
+ };
+
+ /* P9_43 GND */
+
+ /* P9_44 GND */
+
+ /* P9_45 GND */
+
+ /* P9_46 GND */
+
+
+ cape-universal {
+ compatible = "gpio-of-helper";
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ P8_03 {
+ gpio-name = "P8_03";
+ gpio = <&gpio1 6 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_04 {
+ gpio-name = "P8_04";
+ gpio = <&gpio1 7 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_05 {
+ gpio-name = "P8_05";
+ gpio = <&gpio1 2 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_06 {
+ gpio-name = "P8_06";
+ gpio = <&gpio1 3 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_07 {
+ gpio-name = "P8_07";
+ gpio = <&gpio2 2 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_08 {
+ gpio-name = "P8_08";
+ gpio = <&gpio2 3 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_09 {
+ gpio-name = "P8_09";
+ gpio = <&gpio2 5 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_10 {
+ gpio-name = "P8_10";
+ gpio = <&gpio2 4 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_11 {
+ gpio-name = "P8_11";
+ gpio = <&gpio1 13 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_12 {
+ gpio-name = "P8_12";
+ gpio = <&gpio1 12 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_13 {
+ gpio-name = "P8_13";
+ gpio = <&gpio0 23 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_14 {
+ gpio-name = "P8_14";
+ gpio = <&gpio0 26 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_15 {
+ gpio-name = "P8_15";
+ gpio = <&gpio1 15 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_16 {
+ gpio-name = "P8_16";
+ gpio = <&gpio1 14 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_17 {
+ gpio-name = "P8_17";
+ gpio = <&gpio0 27 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_18 {
+ gpio-name = "P8_18";
+ gpio = <&gpio2 1 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_19 {
+ gpio-name = "P8_19";
+ gpio = <&gpio0 22 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_20 {
+ gpio-name = "P8_20";
+ gpio = <&gpio1 31 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_21 {
+ gpio-name = "P8_21";
+ gpio = <&gpio1 30 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_22 {
+ gpio-name = "P8_22";
+ gpio = <&gpio1 5 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_23 {
+ gpio-name = "P8_23";
+ gpio = <&gpio1 4 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_24 {
+ gpio-name = "P8_24";
+ gpio = <&gpio1 1 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_25 {
+ gpio-name = "P8_25";
+ gpio = <&gpio1 0 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_26 {
+ gpio-name = "P8_26";
+ gpio = <&gpio1 29 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_27 {
+ gpio-name = "P8_27";
+ gpio = <&gpio2 22 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_28 {
+ gpio-name = "P8_28";
+ gpio = <&gpio2 24 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_29 {
+ gpio-name = "P8_29";
+ gpio = <&gpio2 23 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_30 {
+ gpio-name = "P8_30";
+ gpio = <&gpio2 25 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_31 {
+ gpio-name = "P8_31";
+ gpio = <&gpio0 10 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_32 {
+ gpio-name = "P8_32";
+ gpio = <&gpio0 11 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_33 {
+ gpio-name = "P8_33";
+ gpio = <&gpio0 9 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_34 {
+ gpio-name = "P8_34";
+ gpio = <&gpio2 17 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_35 {
+ gpio-name = "P8_35";
+ gpio = <&gpio0 8 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_36 {
+ gpio-name = "P8_36";
+ gpio = <&gpio2 16 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_37 {
+ gpio-name = "P8_37";
+ gpio = <&gpio2 14 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_38 {
+ gpio-name = "P8_38";
+ gpio = <&gpio2 15 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_39 {
+ gpio-name = "P8_39";
+ gpio = <&gpio2 12 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_40 {
+ gpio-name = "P8_40";
+ gpio = <&gpio2 13 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_41 {
+ gpio-name = "P8_41";
+ gpio = <&gpio2 10 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_42 {
+ gpio-name = "P8_42";
+ gpio = <&gpio2 11 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_43 {
+ gpio-name = "P8_43";
+ gpio = <&gpio2 8 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_44 {
+ gpio-name = "P8_44";
+ gpio = <&gpio2 9 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_45 {
+ gpio-name = "P8_45";
+ gpio = <&gpio2 6 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_46 {
+ gpio-name = "P8_46";
+ gpio = <&gpio2 7 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_11 {
+ gpio-name = "P9_11";
+ gpio = <&gpio0 30 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_12 {
+ gpio-name = "P9_12";
+ gpio = <&gpio1 28 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_13 {
+ gpio-name = "P9_13";
+ gpio = <&gpio0 31 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_14 {
+ gpio-name = "P9_14";
+ gpio = <&gpio1 18 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_15 {
+ gpio-name = "P9_15";
+ gpio = <&gpio1 16 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_16 {
+ gpio-name = "P9_16";
+ gpio = <&gpio1 19 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_17 {
+ gpio-name = "P9_17";
+ gpio = <&gpio0 5 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_18 {
+ gpio-name = "P9_18";
+ gpio = <&gpio0 4 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_19 {
+ gpio-name = "P9_19";
+ gpio = <&gpio0 13 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_20 {
+ gpio-name = "P9_20";
+ gpio = <&gpio0 12 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_21 {
+ gpio-name = "P9_21";
+ gpio = <&gpio0 3 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_22 {
+ gpio-name = "P9_22";
+ gpio = <&gpio0 2 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_23 {
+ gpio-name = "P9_23";
+ gpio = <&gpio1 17 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_24 {
+ gpio-name = "P9_24";
+ gpio = <&gpio0 15 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_25 {
+ gpio-name = "P9_25";
+ gpio = <&gpio3 21 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_26 {
+ gpio-name = "P9_26";
+ gpio = <&gpio0 14 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_27 {
+ gpio-name = "P9_27";
+ gpio = <&gpio3 19 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_28 {
+ gpio-name = "P9_28";
+ gpio = <&gpio3 17 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_29 {
+ gpio-name = "P9_29";
+ gpio = <&gpio3 15 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_30 {
+ gpio-name = "P9_30";
+ gpio = <&gpio3 16 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_31 {
+ gpio-name = "P9_31";
+ gpio = <&gpio3 14 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_41 {
+ gpio-name = "P9_41";
+ gpio = <&gpio0 20 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_91 {
+ gpio-name = "P9_91";
+ gpio = <&gpio3 20 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_42 {
+ gpio-name = "P9_42";
+ gpio = <&gpio0 7 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_92 {
+ gpio-name = "P9_92";
+ gpio = <&gpio3 18 0>;
+ input;
+ dir-changeable;
+ };
+
+ };
+};
diff --git a/arch/arm/boot/dts/am335x-bone-common.dtsi b/arch/arm/boot/dts/am335x-bone-common.dtsi
index 89b4cf2cb7..914f23be9b 100644
--- a/arch/arm/boot/dts/am335x-bone-common.dtsi
+++ b/arch/arm/boot/dts/am335x-bone-common.dtsi
@@ -26,14 +26,14 @@
compatible = "gpio-leds";
led2 {
- label = "beaglebone:green:heartbeat";
+ label = "beaglebone:green:usr0";
gpios = <&gpio1 21 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "heartbeat";
default-state = "off";
};
led3 {
- label = "beaglebone:green:mmc0";
+ label = "beaglebone:green:usr1";
gpios = <&gpio1 22 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "mmc0";
default-state = "off";
@@ -63,9 +63,6 @@
};
&am33xx_pinmux {
- pinctrl-names = "default";
- pinctrl-0 = <&clkout2_pin>;
-
user_leds_s0: user_leds_s0 {
pinctrl-single,pins = <
AM33XX_PADCONF(AM335X_PIN_GPMC_A5, PIN_OUTPUT_PULLDOWN, MUX_MODE7) /* gpmc_a5.gpio1_21 */
@@ -96,12 +93,6 @@
>;
};
- clkout2_pin: pinmux_clkout2_pin {
- pinctrl-single,pins = <
- AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR1, PIN_OUTPUT_PULLDOWN, MUX_MODE3) /* xdma_event_intr1.clkout2 */
- >;
- };
-
cpsw_default: cpsw_default {
pinctrl-single,pins = <
/* Slave 1 */
@@ -418,4 +409,5 @@
&rtc {
clocks = <&clk_32768_ck>, <&clk_24mhz_clkctrl AM3_CLK_24MHZ_CLKDIV32K_CLKCTRL 0>;
clock-names = "ext-clk", "int-clk";
+ system-power-controller;
};
diff --git a/arch/arm/boot/dts/am335x-bone-jtag.dtsi b/arch/arm/boot/dts/am335x-bone-jtag.dtsi
new file mode 100644
index 0000000000..2cdca01417
--- /dev/null
+++ b/arch/arm/boot/dts/am335x-bone-jtag.dtsi
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2015 Robert Nelson <robertcnelson@gmail.com>
+ */
+
+&am33xx_pinmux {
+ pinctrl-names = "default";
+ pinctrl-0 = <&clkout2_pin>;
+
+ clkout2_pin: pinmux_clkout2_pin {
+ pinctrl-single,pins = <
+ AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR1, PIN_OUTPUT_PULLDOWN, MUX_MODE3) /* xdma_event_intr1.clkout2 */
+ >;
+ };
+};
diff --git a/arch/arm/boot/dts/am335x-bone-uboot-univ.dts b/arch/arm/boot/dts/am335x-bone-uboot-univ.dts
new file mode 100644
index 0000000000..87559166d3
--- /dev/null
+++ b/arch/arm/boot/dts/am335x-bone-uboot-univ.dts
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
+ */
+/dts-v1/;
+
+#include "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+#include "am335x-bone-common-univ.dtsi"
+
+/ {
+ model = "TI AM335x BeagleBone";
+ compatible = "ti,am335x-bone", "ti,am33xx";
+
+ chosen {
+ base_dtb = "am335x-bone-uboot-univ.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
+};
+
+&ldo3_reg {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+};
+
+&mmc1 {
+ vmmc-supply = <&ldo3_reg>;
+};
diff --git a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts
index 43bfbce410..c7ae3e59d2 100644
--- a/arch/arm/boot/dts/am335x-bone.dts
+++ b/arch/arm/boot/dts/am335x-bone.dts
@@ -6,10 +6,16 @@
#include "am33xx.dtsi"
#include "am335x-bone-common.dtsi"
+/* #include "am335x-bone-jtag.dtsi" */
/ {
model = "TI AM335x BeagleBone";
compatible = "ti,am335x-bone", "ti,am33xx";
+
+ chosen {
+ base_dtb = "am335x-bone.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
};
&ldo3_reg {
diff --git a/arch/arm/boot/dts/am335x-boneblack-common.dtsi b/arch/arm/boot/dts/am335x-boneblack-common.dtsi
index 7ad079861e..40e88b1c2d 100644
--- a/arch/arm/boot/dts/am335x-boneblack-common.dtsi
+++ b/arch/arm/boot/dts/am335x-boneblack-common.dtsi
@@ -27,7 +27,6 @@
&am33xx_pinmux {
nxp_hdmi_bonelt_pins: nxp_hdmi_bonelt_pins {
pinctrl-single,pins = <
- AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR0, PIN_OUTPUT_PULLDOWN, MUX_MODE3)
AM33XX_PADCONF(AM335X_PIN_LCD_DATA0, PIN_OUTPUT, MUX_MODE0)
AM33XX_PADCONF(AM335X_PIN_LCD_DATA1, PIN_OUTPUT, MUX_MODE0)
AM33XX_PADCONF(AM335X_PIN_LCD_DATA2, PIN_OUTPUT, MUX_MODE0)
@@ -51,12 +50,6 @@
>;
};
- nxp_hdmi_bonelt_off_pins: nxp_hdmi_bonelt_off_pins {
- pinctrl-single,pins = <
- AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR0, PIN_OUTPUT_PULLDOWN, MUX_MODE3)
- >;
- };
-
mcasp0_pins: mcasp0_pins {
pinctrl-single,pins = <
AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKX, PIN_INPUT_PULLUP, MUX_MODE0) /* mcasp0_ahcklx.mcasp0_ahclkx */
@@ -92,9 +85,8 @@
nxp,calib-gpios = <&gpio1 25 0>;
interrupts-extended = <&gpio1 25 IRQ_TYPE_LEVEL_LOW>;
- pinctrl-names = "default", "off";
+ pinctrl-names = "default";
pinctrl-0 = <&nxp_hdmi_bonelt_pins>;
- pinctrl-1 = <&nxp_hdmi_bonelt_off_pins>;
/* Convert 24bit BGR to RGB, e.g. cross red and blue wiring */
/* video-ports = <0x234501>; */
diff --git a/arch/arm/boot/dts/am335x-boneblack-uboot-univ.dts b/arch/arm/boot/dts/am335x-boneblack-uboot-univ.dts
new file mode 100644
index 0000000000..4e5633e386
--- /dev/null
+++ b/arch/arm/boot/dts/am335x-boneblack-uboot-univ.dts
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
+ */
+/dts-v1/;
+
+#include "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+#include "am335x-bone-common-univ.dtsi"
+
+/ {
+ model = "TI AM335x BeagleBone Black";
+ compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+ chosen {
+ base_dtb = "am335x-boneblack-uboot-univ.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
+};
+
+&cpu0_opp_table {
+ /*
+ * All PG 2.0 silicon may not support 1GHz but some of the early
+ * BeagleBone Blacks have PG 2.0 silicon which is guaranteed
+ * to support 1GHz OPP so enable it for PG 2.0 on this board.
+ */
+ oppnitro-1000000000 {
+ opp-supported-hw = <0x06 0x0100>;
+ };
+};
+
+&ldo3_reg {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+};
+
+&mmc1 {
+ vmmc-supply = <&vmmcsd_fixed>;
+};
diff --git a/arch/arm/boot/dts/am335x-boneblack-uboot.dts b/arch/arm/boot/dts/am335x-boneblack-uboot.dts
new file mode 100644
index 0000000000..09e8c27a4b
--- /dev/null
+++ b/arch/arm/boot/dts/am335x-boneblack-uboot.dts
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
+ */
+/dts-v1/;
+
+#include "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+
+/* #include "am335x-bone-jtag.dtsi" */
+
+/ {
+ model = "TI AM335x BeagleBone Black";
+ compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+ chosen {
+ base_dtb = "am335x-boneblack-uboot.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
+};
+
+&cpu0_opp_table {
+ /*
+ * All PG 2.0 silicon may not support 1GHz but some of the early
+ * BeagleBone Blacks have PG 2.0 silicon which is guaranteed
+ * to support 1GHz OPP so enable it for PG 2.0 on this board.
+ */
+ oppnitro-1000000000 {
+ opp-supported-hw = <0x06 0x0100>;
+ };
+};
+
+&ldo3_reg {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+};
+
+&mmc1 {
+ vmmc-supply = <&vmmcsd_fixed>;
+};
diff --git a/arch/arm/boot/dts/am335x-boneblack-wireless.dts b/arch/arm/boot/dts/am335x-boneblack-wireless.dts
index 3124d94c0b..f98e0cfe14 100644
--- a/arch/arm/boot/dts/am335x-boneblack-wireless.dts
+++ b/arch/arm/boot/dts/am335x-boneblack-wireless.dts
@@ -8,11 +8,17 @@
#include "am335x-bone-common.dtsi"
#include "am335x-boneblack-common.dtsi"
#include <dt-bindings/interrupt-controller/irq.h>
+/* #include "am335x-bone-jtag.dtsi" */
/ {
model = "TI AM335x BeagleBone Black Wireless";
compatible = "ti,am335x-bone-black-wireless", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+ chosen {
+ base_dtb = "am335x-boneblack-wireless.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
+
wlan_en_reg: fixedregulator@2 {
compatible = "regulator-fixed";
regulator-name = "wlan-en-regulator";
diff --git a/arch/arm/boot/dts/am335x-boneblack.dts b/arch/arm/boot/dts/am335x-boneblack.dts
index d3928662ae..40b17b9561 100644
--- a/arch/arm/boot/dts/am335x-boneblack.dts
+++ b/arch/arm/boot/dts/am335x-boneblack.dts
@@ -7,10 +7,16 @@
#include "am33xx.dtsi"
#include "am335x-bone-common.dtsi"
#include "am335x-boneblack-common.dtsi"
+/* #include "am335x-bone-jtag.dtsi" */
/ {
model = "TI AM335x BeagleBone Black";
compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+ chosen {
+ base_dtb = "am335x-boneblack.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
};
&cpu0_opp_table {
diff --git a/arch/arm/boot/dts/am335x-boneblue.dts b/arch/arm/boot/dts/am335x-boneblue.dts
index 0257576d5d..6df70194b1 100644
--- a/arch/arm/boot/dts/am335x-boneblue.dts
+++ b/arch/arm/boot/dts/am335x-boneblue.dts
@@ -11,6 +11,11 @@
model = "TI AM335x BeagleBone Blue";
compatible = "ti,am335x-bone-blue", "ti,am33xx";
+ chosen {
+ base_dtb = "am335x-boneblue.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
+
cpus {
cpu@0 {
cpu0-supply = <&dcdc2_reg>;
@@ -122,9 +127,183 @@
gpio = <&gpio3 9 0>;
enable-active-high;
};
+
+ bt_en {
+ pinctrl-names = "default";
+ pinctrl-0 = <&bt_pins>;
+ compatible = "gpio-leds";
+
+ wl18xx_bt_en {
+ label = "wl18xx_bt_en";
+ gpios = <&gpio0 28 GPIO_ACTIVE_HIGH>;
+ default-state = "off";
+ };
+ };
+};
+
+&cpu0_opp_table {
+ /*
+ * Octavo Systems:
+ * The EFUSE_SMA register is not programmed for any of the AM335x wafers
+ * we get and we are not programming them during our production test.
+ * Therefore, from a DEVICE_ID revision point of view, the silicon looks
+ * like it is Revision 2.1. However, from an EFUSE_SMA point of view for
+ * the HW OPP table, the silicon looks like it is Revision 1.0 (ie the
+ * EFUSE_SMA register reads as all zeros).
+ */
+ oppnitro-1000000000 {
+ opp-supported-hw = <0x06 0x0100>;
+ };
};
&am33xx_pinmux {
+ /***************************************************************************
+ * Static Pinmux
+ ***************************************************************************/
+ mux_helper_pins: pins {
+ pinctrl-single,pins = <
+
+ /* GPIO Inputs */
+ 0x09c 0x37 /*P8.9 Pause BUTTON, input pullup*/
+ 0x098 0x37 /*P8.10 MODE BUTTON input pullup*/
+ 0x1AC 0x37 /*P9.25 MPU-9150 INTERRUPT IN*/
+
+ /* Motor Control GPIO Out*/
+ 0x088 ( PIN_OUTPUT | MUX_MODE7 ) /* (T13) gpmc_csn3.gpio2[0] - MDIR_1A different from cape! */
+ 0x074 ( PIN_OUTPUT | MUX_MODE7 ) /* (U17) gpmc_wpn.gpio0[31] - P9.13, MDIR_1B */
+ 0x040 ( PIN_OUTPUT | MUX_MODE7 ) /* (R13) gpmc_a0.gpio1[16] - P9.15, MDIR_2A */
+ 0x0D8 ( PIN_OUTPUT | MUX_MODE7 ) /* (V4) lcd_data14.gpio0[10] - P8.31, MDIR_2B different from cape! */
+ 0x0AC ( PIN_OUTPUT | MUX_MODE7 ) /* (R4) lcd_data3.gpio2[9] - P8.44, MDIR_3A */
+ 0x0A8 ( PIN_OUTPUT | MUX_MODE7 ) /* (R3) lcd_data2.gpio2[8] - P8.43, MDIR_3B */
+ 0x0A0 ( PIN_OUTPUT | MUX_MODE7 ) /* (R1) lcd_data0.gpio2[6] - P8.45, MDIR_4A */
+ 0x0A4 ( PIN_OUTPUT | MUX_MODE7 ) /* (R2) lcd_data1.gpio2[7] - P8.46, MDIR_4B */
+ 0x1B4 ( PIN_OUTPUT | MUX_MODE7 ) /* (D14) xdma_event_intr1.gpio0[20] - P9.41, MOT_STBY */
+
+ /* PRU encoder input */
+ 0x038 0x36 /* P8_16,PRU0_r31_16,MODE6 */
+
+ /* PRU Servo output */
+ 0x0e0 0x05 /*pru1_pru_r30_8, MODE5*/
+ 0x0e8 0x05 /*pru1_pru_r30_10, MODE5 */
+ 0x0e4 0x05 /*pr1_pru1_pru_r30_9, MODE5 */
+ 0x0ec 0x05 /*pru1_pru_r30_11, MODE5 */
+ 0x0b8 0x05 /*pru1_pru_r30_6, MODE5 */
+ 0x0bc 0x05 /*pru1_pru_r30_7, MODE5 */
+ 0x0b0 0x05 /*pru1_pru_r30_4, MODE5 */
+ 0x0b4 0x05 /*pru1_pru_r30_5, MODE5 */
+ 0x0C8 0x0F /*P8.36, SERVO_PWR GPIO OUT*/
+
+ /* WILINK 8 */
+ 0x08c 0x0F /*P8.18 V12 A2DP FSYNC */
+ 0x078 0x0F /*P9.12 A2DP_CLOCK*/
+ >;
+
+ /* D13 BLUE_GP0_PIN_5 gpio 3_20 */
+ D13_default_pin: pinmux_D13_default_pin {
+ pinctrl-single,pins = < 0x1A8 ( PIN_INPUT_PULLUP | MUX_MODE7 ) >; };
+ D13_gpio_pin: pinmux_D13_gpio_pin {
+ pinctrl-single,pins = < 0x1A8 ( PIN_OUTPUT | MUX_MODE7 ) >; };
+ D13_gpio_pu_pin: pinmux_D13_gpio_pu_pin {
+ pinctrl-single,pins = < 0x1A8 ( PIN_INPUT_PULLUP | MUX_MODE7 ) >; };
+ D13_gpio_pd_pin: pinmux_D13_gpio_pd_pin {
+ pinctrl-single,pins = < 0x1A8 ( PIN_INPUT_PULLDOWN | MUX_MODE7 ) >; };
+
+ /* H17 BLUE_GP1_PIN_4 gpio 3_1 */
+ H17_default_pin: pinmux_H17_default_pin {
+ pinctrl-single,pins = < 0x10C ( PIN_INPUT_PULLUP | MUX_MODE7 ) >; };
+ H17_gpio_pin: pinmux_H17_gpio_pin {
+ pinctrl-single,pins = < 0x10C ( PIN_OUTPUT | MUX_MODE7 ) >; };
+ H17_gpio_pu_pin: pinmux_H17_gpio_pu_pin {
+ pinctrl-single,pins = < 0x10C ( PIN_INPUT_PULLUP | MUX_MODE7 ) >; };
+ H17_gpio_pd_pin: pinmux_H17_gpio_pd_pin {
+ pinctrl-single,pins = < 0x10C ( PIN_INPUT_PULLDOWN | MUX_MODE7 ) >; };
+
+ /* J15 BLUE_GP1_PIN_3 gpio 3_2 */
+ J15_default_pin: pinmux_J15_default_pin {
+ pinctrl-single,pins = < 0x110 ( PIN_INPUT_PULLUP | MUX_MODE7 ) >; };
+ J15_gpio_pin: pinmux_J15_gpio_pin {
+ pinctrl-single,pins = < 0x110 ( PIN_OUTPUT | MUX_MODE7 ) >; };
+ J15_gpio_pu_pin: pinmux_J15_gpio_pu_pin {
+ pinctrl-single,pins = < 0x110 ( PIN_INPUT_PULLUP | MUX_MODE7 ) >; };
+ J15_gpio_pd_pin: pinmux_J15_gpio_pd_pin {
+ pinctrl-single,pins = < 0x110 ( PIN_INPUT_PULLDOWN | MUX_MODE7 ) >; };
+
+ /* P8_15 (ZCZ ball U13) */
+ P8_15_default_pin: pinmux_P8_15_default_pin {
+ pinctrl-single,pins = <0x03c 0x27>; }; /* Mode 7, Pull-Down, RxActive */
+ P8_15_gpio_pin: pinmux_P8_15_gpio_pin {
+ pinctrl-single,pins = <0x03c 0x2F>; }; /* Mode 7, RxActive */
+ P8_15_gpio_pu_pin: pinmux_P8_15_gpio_pu_pin {
+ pinctrl-single,pins = <0x03c 0x37>; }; /* Mode 7, Pull-Up, RxActive */
+ P8_15_gpio_pd_pin: pinmux_P8_15_gpio_pd_pin {
+ pinctrl-single,pins = <0x03c 0x27>; }; /* Mode 7, Pull-Down, RxActive */
+ P8_15_pruin_pin: pinmux_P8_15_pruin_pin {
+ pinctrl-single,pins = <0x03c 0x26>; }; /* Mode 6, Pull-Down, RxActive */
+ P8_15_qep_pin: pinmux_P8_15_qep_pin {
+ pinctrl-single,pins = <0x03c 0x24>; }; /* Mode 4, Pull-Down, RxActive */
+ P8_15_pruin_pu_pin: pinmux_P8_15_pruin_pu_pin {
+ pinctrl-single,pins = <0x03c 0x36>; }; /* Mode 6, Pull-Up, RxActive */
+ P8_15_pruecapin_pu_pin: pinmux_P8_15_pruecapin_pu_pin {
+ pinctrl-single,pins = <0x03c 0x35>; }; /* Mode 5, Pull-Up, RxActive */
+
+ /* P9_11 (ZCZ ball T17) */
+ P9_11_default_pin: pinmux_P9_11_default_pin {
+ pinctrl-single,pins = <0x070 0x37>; }; /* Mode 7, Pull-Up, RxActive */
+ P9_11_gpio_pin: pinmux_P9_11_gpio_pin {
+ pinctrl-single,pins = <0x070 0x2F>; }; /* Mode 7, RxActive */
+ P9_11_gpio_pu_pin: pinmux_P9_11_gpio_pu_pin {
+ pinctrl-single,pins = <0x070 0x37>; }; /* Mode 7, Pull-Up, RxActive */
+ P9_11_gpio_pd_pin: pinmux_P9_11_gpio_pd_pin {
+ pinctrl-single,pins = <0x070 0x27>; }; /* Mode 7, Pull-Down, RxActive */
+ P9_11_uart_pin: pinmux_P9_11_uart_pin {
+ pinctrl-single,pins = <0x070 0x36>; }; /* Mode 6, Pull-Up, RxActive */
+
+ /* P9_23 (ZCZ ball V14) */
+ P9_23_default_pin: pinmux_P9_23_default_pin {
+ pinctrl-single,pins = <0x044 0x27>; }; /* Mode 7, Pull-Down, RxActive */
+ P9_23_gpio_pin: pinmux_P9_23_gpio_pin {
+ pinctrl-single,pins = <0x044 0x2F>; }; /* Mode 7, RxActive */
+ P9_23_gpio_pu_pin: pinmux_P9_23_gpio_pu_pin {
+ pinctrl-single,pins = <0x044 0x37>; }; /* Mode 7, Pull-Up, RxActive */
+ P9_23_gpio_pd_pin: pinmux_P9_23_gpio_pd_pin {
+ pinctrl-single,pins = <0x044 0x27>; }; /* Mode 7, Pull-Down, RxActive */
+ P9_23_pwm_pin: pinmux_P9_23_pwm_pin {
+ pinctrl-single,pins = <0x044 0x26>; }; /* Mode 6, Pull-Down, RxActive */
+
+ /* P9_28 (ZCZ ball C12) Audio */
+ P9_28_default_pin: pinmux_P9_28_default_pin {
+ pinctrl-single,pins = <0x19c 0x27>; }; /* Mode 7, Pull-Down, RxActive */
+ P9_28_gpio_pin: pinmux_P9_28_gpio_pin {
+ pinctrl-single,pins = <0x19c 0x2F>; }; /* Mode 7, RxActive */
+ P9_28_gpio_pu_pin: pinmux_P9_28_gpio_pu_pin {
+ pinctrl-single,pins = <0x19c 0x37>; }; /* Mode 7, Pull-Up, RxActive */
+ P9_28_gpio_pd_pin: pinmux_P9_28_gpio_pd_pin {
+ pinctrl-single,pins = <0x19c 0x27>; }; /* Mode 7, Pull-Down, RxActive */
+ P9_28_pwm_pin: pinmux_P9_28_pwm_pin {
+ pinctrl-single,pins = <0x19c 0x21>; }; /* Mode 1, Pull-Down, RxActive */
+ P9_28_spi_pin: pinmux_P9_28_spi_pin {
+ pinctrl-single,pins = <0x19c 0x23>; }; /* Mode 3, Pull-Down, RxActive */
+ P9_28_pwm2_pin: pinmux_P9_28_pwm2_pin {
+ pinctrl-single,pins = <0x19c 0x24>; }; /* Mode 4, Pull-Down, RxActive */
+ P9_28_pruout_pin: pinmux_P9_28_pruout_pin {
+ pinctrl-single,pins = <0x19c 0x25>; }; /* Mode 5, Pull-Down, RxActive */
+ P9_28_pruin_pin: pinmux_P9_28_pruin_pin {
+ pinctrl-single,pins = <0x19c 0x26>; }; /* Mode 6, Pull-Down, RxActive */
+ P9_28_audio_pin: pinmux_P9_28_audio_pin {
+ pinctrl-single,pins = <0x19c (PIN_OUTPUT_PULLDOWN | MUX_MODE2)>; }; /* mcasp0_ahclkr.mcasp0_axr2 */
+
+ /* U16 BLUE_GP0_PIN_3 gpio 1_25 */
+ U16_default_pin: pinmux_U16_default_pin {
+ pinctrl-single,pins = < 0x064 ( PIN_INPUT_PULLUP | MUX_MODE7 ) >; };
+ U16_gpio_pin: pinmux_U16_gpio_pin {
+ pinctrl-single,pins = < 0x064 ( PIN_OUTPUT | MUX_MODE7 ) >; };
+ U16_gpio_pu_pin: pinmux_U16_gpio_pu_pin {
+ pinctrl-single,pins = < 0x064 ( PIN_INPUT_PULLUP | MUX_MODE7 ) >; };
+ U16_gpio_pd_pin: pinmux_U16_gpio_pd_pin {
+ pinctrl-single,pins = < 0x064 ( PIN_INPUT_PULLDOWN | MUX_MODE7 ) >; };
+
+ };
+
user_leds_s0: user_leds_s0 {
pinctrl-single,pins = <
AM33XX_PADCONF(AM335X_PIN_GPMC_A5, PIN_OUTPUT, MUX_MODE7) /* (V15) gpmc_a5.gpio1[21] - USR_LED_0 */
@@ -181,11 +360,11 @@
};
/* DSM2 */
- uart4_pins: pinmux_uart4_pins {
- pinctrl-single,pins = <
- AM33XX_PADCONF(AM335X_PIN_GPMC_WAIT0, PIN_INPUT_PULLUP, MUX_MODE6) /* (T17) gpmc_wait0.uart4_rxd */
- >;
- };
+ //uart4_pins: pinmux_uart4_pins {
+ // pinctrl-single,pins = <
+ // AM33XX_PADCONF(AM335X_PIN_GPMC_WAIT0, PIN_INPUT_PULLUP, MUX_MODE6) /* (T17) gpmc_wait0.uart4_rxd */
+ // >;
+ //};
/* UT5 */
uart5_pins: pinmux_uart5_pins {
@@ -258,6 +437,51 @@
AM33XX_PADCONF(AM335X_PIN_MII1_RXD0, PIN_OUTPUT, MUX_MODE7) /* (M16) gmii1_rxd0.gpio2[21] */
>;
};
+
+ ehrpwm1_pins: pinmux_ehrpwm1_pins {
+ pinctrl-single,pins = <
+ 0x020 0x24 /* P8_19_pwm_pin */
+ 0x024 0x24 /* P8_13_pwm_pin */
+ >;
+ };
+
+ ehrpwm2_pins: pinmux_ehrpwm2_pins {
+ pinctrl-single,pins = <
+ 0x048 0x26 /* P9_14_pwm_pin */
+ 0x04c 0x26 /* P9_16_pwm_pin */
+ >;
+ };
+
+ eqep0_pins: pinmux_eqep0_pins {
+ pinctrl-single,pins = <
+ 0x1a0 0x21 /* P9_92_qep_pin */
+ 0x1a4 0x21 /* P9_27_qep_pin */
+ >;
+ };
+
+ eqep1_pins: pinmux_eqep1_pins {
+ pinctrl-single,pins = <
+ 0x0d4 0x22 /* P8_33_qep_pin */
+ 0x0d0 0x22 /* P8_35_qep_pin */
+ >;
+ };
+
+ eqep2_pins: pinmux_eqep2_pins {
+ pinctrl-single,pins = <
+ 0x030 0x24 /* P8_12_qep_pin */
+ 0x034 0x24 /* P8_11_qep_pin */
+ >;
+ };
+
+ spi1_pins: pinmux_spi1_pins {
+ pinctrl-single,pins = <
+ 0x190 0x23 /* spi1_sclk */
+ 0x194 0x23 /* spi1_d0 */
+ 0x198 0x23 /* spi1_d1 */
+ 0x144 ( PIN_OUTPUT | MUX_MODE2 ) /* spi1_cs0 */
+ 0x164 ( PIN_OUTPUT | MUX_MODE2 ) /* spi1_cs1 */
+ >;
+ };
};
&uart0 {
@@ -281,12 +505,12 @@
status = "okay";
};
-&uart4 {
- pinctrl-names = "default";
- pinctrl-0 = <&uart4_pins>;
-
- status = "okay";
-};
+//&uart4 {
+// pinctrl-names = "default";
+// pinctrl-0 = <&uart4_pins>;
+//
+// status = "okay";
+//};
&uart5 {
pinctrl-names = "default";
@@ -384,6 +608,8 @@
interrupts = <7>; /* NMI */
interrupt-parent = <&intc>;
+ ti,pmic-shutdown-controller;
+
charger {
interrupts = <0>, <1>;
interrupt-names = "USB", "AC";
@@ -484,22 +710,23 @@
};
};
-&tscadc {
- status = "okay";
- adc {
- ti,adc-channels = <0 1 2 3 4 5 6 7>;
- };
-};
+//&tscadc {
+// status = "okay";
+// adc {
+// ti,adc-channels = <0 1 2 3 4 5 6 7>;
+// };
+//};
&uart3 {
pinctrl-names = "default";
- pinctrl-0 = <&uart3_pins &bt_pins>;
+ //pinctrl-0 = <&uart3_pins &bt_pins>;
+ pinctrl-0 = <&uart3_pins>;
status = "okay";
- bluetooth {
- compatible = "ti,wl1835-st";
- enable-gpios = <&gpio0 28 GPIO_ACTIVE_HIGH>;
- };
+// bluetooth {
+// compatible = "ti,wl1835-st";
+// enable-gpios = <&gpio0 28 GPIO_ACTIVE_HIGH>;
+// };
};
&aes {
@@ -512,8 +739,10 @@
&rtc {
system-power-controller;
- clocks = <&clk_32768_ck>, <&clk_24mhz_clkctrl AM3_CLK_24MHZ_CLKDIV32K_CLKCTRL 0>;
- clock-names = "ext-clk", "int-clk";
+};
+
+&wkup_m3_ipc {
+ ti,scale-data-fw = "am335x-bone-scale-data.bin";
};
&dcan1 {
@@ -530,3 +759,217 @@
line-name = "LS_BUF_EN";
};
};
+
+&ocp {
+ /* activate the static pinmux helper list of pin modes above */
+ test_helper: helper {
+ compatible = "bone-pinmux-helper";
+ pinctrl-names = "default";
+ pinctrl-0 = <&mux_helper_pins>;
+
+ status = "okay";
+ };
+
+ /* Encoder 4 (U13) */
+ P8_15_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "pruin_pu", "gpio", "gpio_pu", "gpio_pd", "pruin", "qep", "pruecapin_pu";
+ pinctrl-0 = <&P8_15_pruin_pu_pin>;
+ pinctrl-1 = <&P8_15_pruin_pu_pin>;
+ pinctrl-2 = <&P8_15_gpio_pin>;
+ pinctrl-3 = <&P8_15_gpio_pu_pin>;
+ pinctrl-4 = <&P8_15_gpio_pd_pin>;
+ pinctrl-5 = <&P8_15_pruin_pin>;
+ pinctrl-6 = <&P8_15_qep_pin>;
+ pinctrl-7 = <&P8_15_pruecapin_pu_pin>;
+ };
+
+ /* UART4 RX DSM */
+ P9_11_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "uart", "gpio", "gpio_pu", "gpio_pd";
+ pinctrl-0 = <&P9_11_uart_pin>;
+ pinctrl-1 = <&P9_11_uart_pin>;
+ pinctrl-2 = <&P9_11_gpio_pin>;
+ pinctrl-3 = <&P9_11_gpio_pu_pin>;
+ pinctrl-4 = <&P9_11_gpio_pd_pin>;
+ };
+
+ /* U16 BLUE_GP0_PIN_3 gpio 1_25*/
+ U16_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd";
+ pinctrl-0 = <&U16_default_pin>;
+ pinctrl-1 = <&U16_gpio_pin>;
+ pinctrl-2 = <&U16_gpio_pu_pin>;
+ pinctrl-3 = <&U16_gpio_pd_pin>;
+ };
+
+
+ /* BLUE_GP0_PIN_3 gpio1_17*/
+ P9_23_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "pwm";
+ pinctrl-0 = <&P9_23_default_pin>;
+ pinctrl-1 = <&P9_23_gpio_pin>;
+ pinctrl-2 = <&P9_23_gpio_pu_pin>;
+ pinctrl-3 = <&P9_23_gpio_pd_pin>;
+ pinctrl-4 = <&P9_23_pwm_pin>;
+ };
+
+ /* BLUE_GP0_PIN_5 gpio3_20 */
+ D13_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd";
+ pinctrl-0 = <&D13_default_pin>;
+ pinctrl-1 = <&D13_gpio_pin>;
+ pinctrl-2 = <&D13_gpio_pu_pin>;
+ pinctrl-3 = <&D13_gpio_pd_pin>;
+ };
+
+ /* BLUE_GP0_PIN_6 gpio3_17 */
+ P9_28_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "pwm", "spi", "pwm2", "pruout", "pruin";
+ pinctrl-0 = <&P9_28_default_pin>;
+ pinctrl-1 = <&P9_28_gpio_pin>;
+ pinctrl-2 = <&P9_28_gpio_pu_pin>;
+ pinctrl-3 = <&P9_28_gpio_pd_pin>;
+ pinctrl-4 = <&P9_28_pwm_pin>;
+ pinctrl-5 = <&P9_28_spi_pin>;
+ pinctrl-6 = <&P9_28_pwm2_pin>;
+ pinctrl-7 = <&P9_28_pruout_pin>;
+ pinctrl-8 = <&P9_28_pruin_pin>;
+ };
+
+ /* BLUE_GP1_PIN_3 gpio3_2 */
+ J15_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd";
+ pinctrl-0 = <&J15_default_pin>;
+ pinctrl-1 = <&J15_gpio_pin>;
+ pinctrl-2 = <&J15_gpio_pu_pin>;
+ pinctrl-3 = <&J15_gpio_pd_pin>;
+ };
+
+ /* BLUE_GP1_PIN_4 gpio3_1 */
+ H17_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd";
+ pinctrl-0 = <&H17_default_pin>;
+ pinctrl-1 = <&H17_gpio_pin>;
+ pinctrl-2 = <&H17_gpio_pu_pin>;
+ pinctrl-3 = <&H17_gpio_pd_pin>;
+ };
+};
+
+/*******************************************************************************
+* PWMSS
+*******************************************************************************/
+&epwmss0 {
+ status = "okay";
+};
+
+&epwmss1 {
+ status = "okay";
+};
+
+&epwmss2 {
+ status = "okay";
+};
+
+&ehrpwm0 {
+ status = "okay";
+};
+
+&ehrpwm1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&ehrpwm1_pins>;
+ status = "okay";
+};
+
+&ehrpwm2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&ehrpwm2_pins>;
+ status = "okay";
+};
+
+/*******************************************************************************
+* EQEP
+*******************************************************************************/
+&eqep0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&eqep0_pins>;
+
+ count_mode = <0>; /* 0 - Quadrature mode, normal 90 phase offset cha & chb. 1 - Direction mode. cha input = clock, chb input = direction */
+ swap_inputs = <0>; /* Are channel A and channel B swapped? (0 - no, 1 - yes) */
+ invert_qa = <1>; /* Should we invert the channel A input? */
+ invert_qb = <1>; /* Should we invert the channel B input? I invert these because my encoder outputs drive transistors that pull down the pins */
+ invert_qi = <0>; /* Should we invert the index input? */
+ invert_qs = <0>; /* Should we invert the strobe input? */
+ status = "okay";
+};
+
+&eqep1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&eqep1_pins>;
+
+ count_mode = <0>; /* 0 - Quadrature mode, normal 90 phase offset cha & chb. 1 - Direction mode. cha input = clock, chb input = direction */
+ swap_inputs = <0>; /* Are channel A and channel B swapped? (0 - no, 1 - yes) */
+ invert_qa = <1>; /* Should we invert the channel A input? */
+ invert_qb = <1>; /* Should we invert the channel B input? I invert these because my encoder outputs drive transistors that pull down the pins */
+ invert_qi = <0>; /* Should we invert the index input? */
+ invert_qs = <0>; /* Should we invert the strobe input? */
+ status = "okay";
+};
+
+&eqep2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&eqep2_pins>;
+
+ count_mode = <0>; /* 0 - Quadrature mode, normal 90 phase offset cha & chb. 1 - Direction mode. cha input = clock, chb input = direction */
+ swap_inputs = <0>; /* Are channel A and channel B swapped? (0 - no, 1 - yes) */
+ invert_qa = <1>; /* Should we invert the channel A input? */
+ invert_qb = <1>; /* Should we invert the channel B input? I invert these because my encoder outputs drive transistors that pull down the pins */
+ invert_qi = <0>; /* Should we invert the index input? */
+ invert_qs = <0>; /* Should we invert the strobe input? */
+ status = "okay";
+};
+
+/*******************************************************************************
+ SPI
+*******************************************************************************/
+&spi1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi1_pins>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ channel@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "spidev";
+ symlink = "spi/1.0";
+ reg = <0>;
+ spi-max-frequency = <24000000>;
+ };
+
+ channel@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "spidev";
+ symlink = "spi/1.1";
+ reg = <1>;
+ spi-max-frequency = <24000000>;
+ };
+};
diff --git a/arch/arm/boot/dts/am335x-bonegreen-wireless-common-univ.dtsi b/arch/arm/boot/dts/am335x-bonegreen-wireless-common-univ.dtsi
new file mode 100644
index 0000000000..e6f28c969b
--- /dev/null
+++ b/arch/arm/boot/dts/am335x-bonegreen-wireless-common-univ.dtsi
@@ -0,0 +1,2794 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
+ */
+
+&am33xx_pinmux {
+ /************************/
+ /* P8 Header */
+ /************************/
+
+ /* P8_01 GND */
+
+ /* P8_02 GND */
+
+
+ /* P8_03 (ZCZ ball R9) emmc */
+ P8_03_default_pin: pinmux_P8_03_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0818, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad6.gpio1_6 */
+ P8_03_gpio_pin: pinmux_P8_03_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0818, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad6.gpio1_6 */
+ P8_03_gpio_pu_pin: pinmux_P8_03_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0818, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad6.gpio1_6 */
+ P8_03_gpio_pd_pin: pinmux_P8_03_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0818, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad6.gpio1_6 */
+ P8_03_gpio_input_pin: pinmux_P8_03_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0818, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad6.gpio1_6 */
+
+ /* P8_04 (ZCZ ball T9) emmc */
+ P8_04_default_pin: pinmux_P8_04_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x081c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad7.gpio1_7 */
+ P8_04_gpio_pin: pinmux_P8_04_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x081c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad7.gpio1_7 */
+ P8_04_gpio_pu_pin: pinmux_P8_04_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x081c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad7.gpio1_7 */
+ P8_04_gpio_pd_pin: pinmux_P8_04_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x081c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad7.gpio1_7 */
+ P8_04_gpio_input_pin: pinmux_P8_04_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x081c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad7.gpio1_7 */
+
+ /* P8_05 (ZCZ ball R8) emmc */
+ P8_05_default_pin: pinmux_P8_05_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0808, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad2.gpio1_2 */
+ P8_05_gpio_pin: pinmux_P8_05_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0808, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad2.gpio1_2 */
+ P8_05_gpio_pu_pin: pinmux_P8_05_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0808, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad2.gpio1_2 */
+ P8_05_gpio_pd_pin: pinmux_P8_05_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0808, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad2.gpio1_2 */
+ P8_05_gpio_input_pin: pinmux_P8_05_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0808, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad2.gpio1_2 */
+
+ /* P8_06 (ZCZ ball T8) emmc */
+ P8_06_default_pin: pinmux_P8_06_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x080c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad3.gpio1_3 */
+ P8_06_gpio_pin: pinmux_P8_06_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x080c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad3.gpio1_3 */
+ P8_06_gpio_pu_pin: pinmux_P8_06_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x080c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad3.gpio1_3 */
+ P8_06_gpio_pd_pin: pinmux_P8_06_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x080c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad3.gpio1_3 */
+ P8_06_gpio_input_pin: pinmux_P8_06_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x080c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad3.gpio1_3 */
+
+ /* P8_07 (ZCZ ball R7) gpio2_2 */
+ P8_07_default_pin: pinmux_P8_07_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_advn_ale.gpio2_2 */
+ P8_07_gpio_pin: pinmux_P8_07_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0890, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_advn_ale.gpio2_2 */
+ P8_07_gpio_pu_pin: pinmux_P8_07_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_advn_ale.gpio2_2 */
+ P8_07_gpio_pd_pin: pinmux_P8_07_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_advn_ale.gpio2_2 */
+ P8_07_gpio_input_pin: pinmux_P8_07_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0890, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_advn_ale.gpio2_2 */
+ P8_07_timer_pin: pinmux_P8_07_timer_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* gpmc_advn_ale.timer4 */
+
+ /* P8_08 (ZCZ ball T7) gpio2_3 */
+ P8_08_default_pin: pinmux_P8_08_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_oen_ren.gpio2_3 */
+ P8_08_gpio_pin: pinmux_P8_08_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0894, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_oen_ren.gpio2_3 */
+ P8_08_gpio_pu_pin: pinmux_P8_08_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_oen_ren.gpio2_3 */
+ P8_08_gpio_pd_pin: pinmux_P8_08_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_oen_ren.gpio2_3 */
+ P8_08_gpio_input_pin: pinmux_P8_08_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0894, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_oen_ren.gpio2_3 */
+ P8_08_timer_pin: pinmux_P8_08_timer_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* gpmc_oen_ren.timer7 */
+
+ /* P8_09 (ZCZ ball T6) gpio2_5 */
+ P8_09_default_pin: pinmux_P8_09_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be0n_cle.gpio2_5 */
+ P8_09_gpio_pin: pinmux_P8_09_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x089c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be0n_cle.gpio2_5 */
+ P8_09_gpio_pu_pin: pinmux_P8_09_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be0n_cle.gpio2_5 */
+ P8_09_gpio_pd_pin: pinmux_P8_09_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be0n_cle.gpio2_5 */
+ P8_09_gpio_input_pin: pinmux_P8_09_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x089c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_be0n_cle.gpio2_5 */
+ P8_09_timer_pin: pinmux_P8_09_timer_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* gpmc_be0n_cle.timer5 */
+
+ /* P8_10 (ZCZ ball U6) gpio2_4 */
+ P8_10_default_pin: pinmux_P8_10_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wen.gpio2_4 */
+ P8_10_gpio_pin: pinmux_P8_10_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0898, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wen.gpio2_4 */
+ P8_10_gpio_pu_pin: pinmux_P8_10_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wen.gpio2_4 */
+ P8_10_gpio_pd_pin: pinmux_P8_10_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wen.gpio2_4 */
+ P8_10_gpio_input_pin: pinmux_P8_10_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0898, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_wen.gpio2_4 */
+ P8_10_timer_pin: pinmux_P8_10_timer_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* gpmc_wen.timer6 */
+
+ /* P8_11 (ZCZ ball R12) gpio1_13 */
+ P8_11_default_pin: pinmux_P8_11_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P8_11_gpio_pin: pinmux_P8_11_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P8_11_gpio_pu_pin: pinmux_P8_11_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P8_11_gpio_pd_pin: pinmux_P8_11_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P8_11_gpio_input_pin: pinmux_P8_11_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P8_11_qep_pin: pinmux_P8_11_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad13.eqep2b_in */
+ P8_11_pruout_pin: pinmux_P8_11_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_ad13.pru0_out15 */
+
+ /* P8_12 (ZCZ ball T12) gpio1_12 */
+ P8_12_default_pin: pinmux_P8_12_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P8_12_gpio_pin: pinmux_P8_12_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P8_12_gpio_pu_pin: pinmux_P8_12_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P8_12_gpio_pd_pin: pinmux_P8_12_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P8_12_gpio_input_pin: pinmux_P8_12_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P8_12_qep_pin: pinmux_P8_12_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad12.eqep2a_in */
+ P8_12_pruout_pin: pinmux_P8_12_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_ad12.pru0_out14 */
+
+ /* P8_13 (ZCZ ball T10) gpio0_23 */
+ P8_13_default_pin: pinmux_P8_13_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P8_13_gpio_pin: pinmux_P8_13_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P8_13_gpio_pu_pin: pinmux_P8_13_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P8_13_gpio_pd_pin: pinmux_P8_13_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P8_13_gpio_input_pin: pinmux_P8_13_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P8_13_pwm_pin: pinmux_P8_13_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad9.ehrpwm2b */
+
+ /* P8_14 (ZCZ ball T11) wl1835: wl_en */
+
+ /* P8_15 (ZCZ ball U13) gpio1_15 */
+ P8_15_default_pin: pinmux_P8_15_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P8_15_gpio_pin: pinmux_P8_15_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P8_15_gpio_pu_pin: pinmux_P8_15_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P8_15_gpio_pd_pin: pinmux_P8_15_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P8_15_gpio_input_pin: pinmux_P8_15_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P8_15_qep_pin: pinmux_P8_15_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad15.eqep2_strobe */
+ P8_15_pru_ecap_pin: pinmux_P8_15_pru_ecap_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* gpmc_ad15.pr1_ecap0_ecap_capin_apwm_o */
+ P8_15_pruin_pin: pinmux_P8_15_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_INPUT | MUX_MODE6) >; }; /* gpmc_ad15.pru0_in15 */
+
+ /* P8_16 (ZCZ ball V13) gpio1_14 */
+ P8_16_default_pin: pinmux_P8_16_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P8_16_gpio_pin: pinmux_P8_16_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P8_16_gpio_pu_pin: pinmux_P8_16_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P8_16_gpio_pd_pin: pinmux_P8_16_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P8_16_gpio_input_pin: pinmux_P8_16_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P8_16_qep_pin: pinmux_P8_16_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad14.eqep2_index */
+ P8_16_pruin_pin: pinmux_P8_16_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_INPUT | MUX_MODE6) >; }; /* gpmc_ad14.pru0_in14 */
+
+ /* P8_17 (ZCZ ball U12) wl1835: wl_irq */
+
+ /* P8_18 (ZCZ ball V12) gpio2_1 */
+ P8_18_default_pin: pinmux_P8_18_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+ P8_18_gpio_pin: pinmux_P8_18_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+ P8_18_gpio_pu_pin: pinmux_P8_18_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+ P8_18_gpio_pd_pin: pinmux_P8_18_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+ P8_18_gpio_input_pin: pinmux_P8_18_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+
+ /* P8_19 (ZCZ ball U10) gpio0_22 */
+ P8_19_default_pin: pinmux_P8_19_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad8.gpio0_22 */
+ P8_19_gpio_pin: pinmux_P8_19_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0820, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad8.gpio0_22 */
+ P8_19_gpio_pu_pin: pinmux_P8_19_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad8.gpio0_22 */
+ P8_19_gpio_pd_pin: pinmux_P8_19_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad8.gpio0_22 */
+ P8_19_gpio_input_pin: pinmux_P8_19_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0820, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad8.gpio0_22 */
+ P8_19_pwm_pin: pinmux_P8_19_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad8.ehrpwm2a */
+
+ /* P8_20 (ZCZ ball V9) emmc */
+ P8_20_default_pin: pinmux_P8_20_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn2.gpio1_31 */
+ P8_20_gpio_pin: pinmux_P8_20_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0884, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn2.gpio1_31 */
+ P8_20_gpio_pu_pin: pinmux_P8_20_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn2.gpio1_31 */
+ P8_20_gpio_pd_pin: pinmux_P8_20_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn2.gpio1_31 */
+ P8_20_gpio_input_pin: pinmux_P8_20_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0884, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_csn2.gpio1_31 */
+ P8_20_pruout_pin: pinmux_P8_20_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* gpmc_csn2.pru1_out13 */
+ P8_20_pruin_pin: pinmux_P8_20_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0884, PIN_INPUT | MUX_MODE6) >; }; /* gpmc_csn2.pru1_in13 */
+
+ /* P8_21 (ZCZ ball U9) emmc */
+ P8_21_default_pin: pinmux_P8_21_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn1.gpio1_30 */
+ P8_21_gpio_pin: pinmux_P8_21_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0880, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn1.gpio1_30 */
+ P8_21_gpio_pu_pin: pinmux_P8_21_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn1.gpio1_30 */
+ P8_21_gpio_pd_pin: pinmux_P8_21_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn1.gpio1_30 */
+ P8_21_gpio_input_pin: pinmux_P8_21_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0880, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_csn1.gpio1_30 */
+ P8_21_pruout_pin: pinmux_P8_21_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* gpmc_csn1.pru1_out12 */
+ P8_21_pruin_pin: pinmux_P8_21_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0880, PIN_INPUT | MUX_MODE6) >; }; /* gpmc_csn1.pru1_in12 */
+
+ /* P8_22 (ZCZ ball V8) emmc */
+ P8_22_default_pin: pinmux_P8_22_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0814, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad5.gpio1_5 */
+ P8_22_gpio_pin: pinmux_P8_22_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0814, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad5.gpio1_5 */
+ P8_22_gpio_pu_pin: pinmux_P8_22_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0814, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad5.gpio1_5 */
+ P8_22_gpio_pd_pin: pinmux_P8_22_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0814, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad5.gpio1_5 */
+ P8_22_gpio_input_pin: pinmux_P8_22_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0814, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad5.gpio1_5 */
+
+ /* P8_23 (ZCZ ball U8) emmc */
+ P8_23_default_pin: pinmux_P8_23_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0810, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad4.gpio1_4 */
+ P8_23_gpio_pin: pinmux_P8_23_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0810, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad4.gpio1_4 */
+ P8_23_gpio_pu_pin: pinmux_P8_23_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0810, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad4.gpio1_4 */
+ P8_23_gpio_pd_pin: pinmux_P8_23_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0810, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad4.gpio1_4 */
+ P8_23_gpio_input_pin: pinmux_P8_23_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0810, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad4.gpio1_4 */
+
+ /* P8_24 (ZCZ ball V7) emmc */
+ P8_24_default_pin: pinmux_P8_24_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0804, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad1.gpio1_1 */
+ P8_24_gpio_pin: pinmux_P8_24_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0804, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad1.gpio1_1 */
+ P8_24_gpio_pu_pin: pinmux_P8_24_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0804, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad1.gpio1_1 */
+ P8_24_gpio_pd_pin: pinmux_P8_24_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0804, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad1.gpio1_1 */
+ P8_24_gpio_input_pin: pinmux_P8_24_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0804, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad1.gpio1_1 */
+
+ /* P8_25 (ZCZ ball U7) emmc */
+ P8_25_default_pin: pinmux_P8_25_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0800, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad0.gpio1_0 */
+ P8_25_gpio_pin: pinmux_P8_25_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0800, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad0.gpio1_0 */
+ P8_25_gpio_pu_pin: pinmux_P8_25_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0800, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad0.gpio1_0 */
+ P8_25_gpio_pd_pin: pinmux_P8_25_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0800, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad0.gpio1_0 */
+ P8_25_gpio_input_pin: pinmux_P8_25_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0800, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad0.gpio1_0 */
+
+ /* P8_26 (ZCZ ball V6) gpio-hog wl1835 */
+
+ /* P8_27 (ZCZ ball U5) hdmi */
+ P8_27_default_pin: pinmux_P8_27_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P8_27_gpio_pin: pinmux_P8_27_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P8_27_gpio_pu_pin: pinmux_P8_27_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P8_27_gpio_pd_pin: pinmux_P8_27_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P8_27_gpio_input_pin: pinmux_P8_27_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_INPUT | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P8_27_pruout_pin: pinmux_P8_27_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_vsync.pru1_out8 */
+ P8_27_pruin_pin: pinmux_P8_27_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_INPUT | MUX_MODE6) >; }; /* lcd_vsync.pru1_in8 */
+
+ /* P8_28 (ZCZ ball V5) hdmi */
+ P8_28_default_pin: pinmux_P8_28_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_pclk.gpio2_24 */
+ P8_28_gpio_pin: pinmux_P8_28_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_pclk.gpio2_24 */
+ P8_28_gpio_pu_pin: pinmux_P8_28_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_pclk.gpio2_24 */
+ P8_28_gpio_pd_pin: pinmux_P8_28_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_pclk.gpio2_24 */
+ P8_28_gpio_input_pin: pinmux_P8_28_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_INPUT | MUX_MODE7) >; }; /* lcd_pclk.gpio2_24 */
+ P8_28_pruout_pin: pinmux_P8_28_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_pclk.pru1_out10 */
+ P8_28_pruin_pin: pinmux_P8_28_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_INPUT | MUX_MODE6) >; }; /* lcd_pclk.pru1_in10 */
+
+ /* P8_29 (ZCZ ball R5) hdmi */
+ P8_29_default_pin: pinmux_P8_29_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P8_29_gpio_pin: pinmux_P8_29_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P8_29_gpio_pu_pin: pinmux_P8_29_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P8_29_gpio_pd_pin: pinmux_P8_29_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P8_29_gpio_input_pin: pinmux_P8_29_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_INPUT | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P8_29_pruout_pin: pinmux_P8_29_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_hsync.pru1_out9 */
+ P8_29_pruin_pin: pinmux_P8_29_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_INPUT | MUX_MODE6) >; }; /* lcd_hsync.pru1_in9 */
+
+ /* P8_30 (ZCZ ball R6) hdmi */
+ P8_30_default_pin: pinmux_P8_30_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P8_30_gpio_pin: pinmux_P8_30_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P8_30_gpio_pu_pin: pinmux_P8_30_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P8_30_gpio_pd_pin: pinmux_P8_30_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P8_30_gpio_input_pin: pinmux_P8_30_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_INPUT | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P8_30_pruout_pin: pinmux_P8_30_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_ac_bias_en.pru1_out11 */
+ P8_30_pruin_pin: pinmux_P8_30_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_INPUT | MUX_MODE6) >; }; /* lcd_ac_bias_en.pru1_in11 */
+
+ /* P8_31 (ZCZ ball V4) hdmi */
+ P8_31_default_pin: pinmux_P8_31_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data14.gpio0_10 */
+ P8_31_gpio_pin: pinmux_P8_31_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data14.gpio0_10 */
+ P8_31_gpio_pu_pin: pinmux_P8_31_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data14.gpio0_10 */
+ P8_31_gpio_pd_pin: pinmux_P8_31_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data14.gpio0_10 */
+ P8_31_gpio_input_pin: pinmux_P8_31_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d8, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data14.gpio0_10 */
+ P8_31_qep_pin: pinmux_P8_31_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* lcd_data14.eqep1_index */
+ P8_31_uart_pin: pinmux_P8_31_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* lcd_data14.uart5_rxd */
+
+ /* P8_32 (ZCZ ball T5) hdmi */
+ P8_32_default_pin: pinmux_P8_32_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data15.gpio0_11 */
+ P8_32_gpio_pin: pinmux_P8_32_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08dc, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data15.gpio0_11 */
+ P8_32_gpio_pu_pin: pinmux_P8_32_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data15.gpio0_11 */
+ P8_32_gpio_pd_pin: pinmux_P8_32_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data15.gpio0_11 */
+ P8_32_gpio_input_pin: pinmux_P8_32_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08dc, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data15.gpio0_11 */
+ P8_32_qep_pin: pinmux_P8_32_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* lcd_data15.eqep1_strobe */
+
+ /* P8_33 (ZCZ ball V3) hdmi */
+ P8_33_default_pin: pinmux_P8_33_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data13.gpio0_9 */
+ P8_33_gpio_pin: pinmux_P8_33_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data13.gpio0_9 */
+ P8_33_gpio_pu_pin: pinmux_P8_33_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data13.gpio0_9 */
+ P8_33_gpio_pd_pin: pinmux_P8_33_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data13.gpio0_9 */
+ P8_33_gpio_input_pin: pinmux_P8_33_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d4, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data13.gpio0_9 */
+ P8_33_qep_pin: pinmux_P8_33_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* lcd_data13.eqep1b_in */
+
+ /* P8_34 (ZCZ ball U4) hdmi */
+ P8_34_default_pin: pinmux_P8_34_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data11.gpio2_17 */
+ P8_34_gpio_pin: pinmux_P8_34_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08cc, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data11.gpio2_17 */
+ P8_34_gpio_pu_pin: pinmux_P8_34_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data11.gpio2_17 */
+ P8_34_gpio_pd_pin: pinmux_P8_34_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data11.gpio2_17 */
+ P8_34_gpio_input_pin: pinmux_P8_34_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08cc, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data11.gpio2_17 */
+ P8_34_pwm_pin: pinmux_P8_34_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; }; /* lcd_data11.ehrpwm1b */
+
+ /* P8_35 (ZCZ ball V2) hdmi */
+ P8_35_default_pin: pinmux_P8_35_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data12.gpio0_8 */
+ P8_35_gpio_pin: pinmux_P8_35_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data12.gpio0_8 */
+ P8_35_gpio_pu_pin: pinmux_P8_35_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data12.gpio0_8 */
+ P8_35_gpio_pd_pin: pinmux_P8_35_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data12.gpio0_8 */
+ P8_35_gpio_input_pin: pinmux_P8_35_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d0, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data12.gpio0_8 */
+ P8_35_qep_pin: pinmux_P8_35_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* lcd_data12.eqep1a_in */
+
+ /* P8_36 (ZCZ ball U3) hdmi */
+ P8_36_default_pin: pinmux_P8_36_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data10.gpio2_16 */
+ P8_36_gpio_pin: pinmux_P8_36_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data10.gpio2_16 */
+ P8_36_gpio_pu_pin: pinmux_P8_36_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data10.gpio2_16 */
+ P8_36_gpio_pd_pin: pinmux_P8_36_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data10.gpio2_16 */
+ P8_36_gpio_input_pin: pinmux_P8_36_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c8, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data10.gpio2_16 */
+ P8_36_pwm_pin: pinmux_P8_36_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; }; /* lcd_data10.ehrpwm1a */
+
+ /* P8_37 (ZCZ ball U1) hdmi */
+ P8_37_default_pin: pinmux_P8_37_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data8.gpio2_14 */
+ P8_37_gpio_pin: pinmux_P8_37_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data8.gpio2_14 */
+ P8_37_gpio_pu_pin: pinmux_P8_37_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data8.gpio2_14 */
+ P8_37_gpio_pd_pin: pinmux_P8_37_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data8.gpio2_14 */
+ P8_37_gpio_input_pin: pinmux_P8_37_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c0, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data8.gpio2_14 */
+ P8_37_pwm_pin: pinmux_P8_37_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; }; /* lcd_data8.ehrpwm1_tripzone_input */
+ P8_37_uart_pin: pinmux_P8_37_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* lcd_data8.uart5_txd */
+
+ /* P8_38 (ZCZ ball U2) hdmi */
+ P8_38_default_pin: pinmux_P8_38_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data9.gpio2_15 */
+ P8_38_gpio_pin: pinmux_P8_38_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data9.gpio2_15 */
+ P8_38_gpio_pu_pin: pinmux_P8_38_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data9.gpio2_15 */
+ P8_38_gpio_pd_pin: pinmux_P8_38_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data9.gpio2_15 */
+ P8_38_gpio_input_pin: pinmux_P8_38_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c4, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data9.gpio2_15 */
+ P8_38_pwm_pin: pinmux_P8_38_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; }; /* lcd_data9.ehrpwm0_synco */
+ P8_38_uart_pin: pinmux_P8_38_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* lcd_data9.uart5_rxd */
+
+ /* P8_39 (ZCZ ball T3) hdmi */
+ P8_39_default_pin: pinmux_P8_39_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data6.gpio2_12 */
+ P8_39_gpio_pin: pinmux_P8_39_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data6.gpio2_12 */
+ P8_39_gpio_pu_pin: pinmux_P8_39_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data6.gpio2_12 */
+ P8_39_gpio_pd_pin: pinmux_P8_39_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data6.gpio2_12 */
+ P8_39_gpio_input_pin: pinmux_P8_39_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data6.gpio2_12 */
+ P8_39_qep_pin: pinmux_P8_39_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* lcd_data6.eqep2_index */
+ P8_39_pruout_pin: pinmux_P8_39_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data6.pru1_out6 */
+ P8_39_pruin_pin: pinmux_P8_39_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b8, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data6.pru1_in6 */
+
+ /* P8_40 (ZCZ ball T4) hdmi */
+ P8_40_default_pin: pinmux_P8_40_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data7.gpio2_13 */
+ P8_40_gpio_pin: pinmux_P8_40_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data7.gpio2_13 */
+ P8_40_gpio_pu_pin: pinmux_P8_40_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data7.gpio2_13 */
+ P8_40_gpio_pd_pin: pinmux_P8_40_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data7.gpio2_13 */
+ P8_40_gpio_input_pin: pinmux_P8_40_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data7.gpio2_13 */
+ P8_40_qep_pin: pinmux_P8_40_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* lcd_data7.eqep2_strobe */
+ P8_40_pruout_pin: pinmux_P8_40_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data7.pru1_out7 */
+ P8_40_pruin_pin: pinmux_P8_40_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08bc, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data7.pru1_in7 */
+
+ /* P8_41 (ZCZ ball T1) hdmi */
+ P8_41_default_pin: pinmux_P8_41_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data4.gpio2_10 */
+ P8_41_gpio_pin: pinmux_P8_41_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data4.gpio2_10 */
+ P8_41_gpio_pu_pin: pinmux_P8_41_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data4.gpio2_10 */
+ P8_41_gpio_pd_pin: pinmux_P8_41_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data4.gpio2_10 */
+ P8_41_gpio_input_pin: pinmux_P8_41_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data4.gpio2_10 */
+ P8_41_qep_pin: pinmux_P8_41_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* lcd_data4.eqep2a_in */
+ P8_41_pruout_pin: pinmux_P8_41_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data4.pru1_out4 */
+ P8_41_pruin_pin: pinmux_P8_41_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b0, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data4.pru1_in4 */
+
+ /* P8_42 (ZCZ ball T2) hdmi */
+ P8_42_default_pin: pinmux_P8_42_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data5.gpio2_11 */
+ P8_42_gpio_pin: pinmux_P8_42_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data5.gpio2_11 */
+ P8_42_gpio_pu_pin: pinmux_P8_42_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data5.gpio2_11 */
+ P8_42_gpio_pd_pin: pinmux_P8_42_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data5.gpio2_11 */
+ P8_42_gpio_input_pin: pinmux_P8_42_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data5.gpio2_11 */
+ P8_42_qep_pin: pinmux_P8_42_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* lcd_data5.eqep2b_in */
+ P8_42_pruout_pin: pinmux_P8_42_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data5.pru1_out5 */
+ P8_42_pruin_pin: pinmux_P8_42_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08b4, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data5.pru1_in5 */
+
+ /* P8_43 (ZCZ ball R3) hdmi */
+ P8_43_default_pin: pinmux_P8_43_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data2.gpio2_8 */
+ P8_43_gpio_pin: pinmux_P8_43_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data2.gpio2_8 */
+ P8_43_gpio_pu_pin: pinmux_P8_43_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data2.gpio2_8 */
+ P8_43_gpio_pd_pin: pinmux_P8_43_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data2.gpio2_8 */
+ P8_43_gpio_input_pin: pinmux_P8_43_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data2.gpio2_8 */
+ P8_43_pwm_pin: pinmux_P8_43_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* lcd_data2.ehrpwm2_tripzone_input */
+ P8_43_pruout_pin: pinmux_P8_43_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data2.pru1_out2 */
+ P8_43_pruin_pin: pinmux_P8_43_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a8, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data2.pru1_in2 */
+
+ /* P8_44 (ZCZ ball R4) hdmi */
+ P8_44_default_pin: pinmux_P8_44_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data3.gpio2_9 */
+ P8_44_gpio_pin: pinmux_P8_44_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data3.gpio2_9 */
+ P8_44_gpio_pu_pin: pinmux_P8_44_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data3.gpio2_9 */
+ P8_44_gpio_pd_pin: pinmux_P8_44_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data3.gpio2_9 */
+ P8_44_gpio_input_pin: pinmux_P8_44_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data3.gpio2_9 */
+ P8_44_pwm_pin: pinmux_P8_44_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* lcd_data3.ehrpwm0_synco */
+ P8_44_pruout_pin: pinmux_P8_44_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data3.pru1_out3 */
+ P8_44_pruin_pin: pinmux_P8_44_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ac, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data3.pru1_in3 */
+
+ /* P8_45 (ZCZ ball R1) hdmi */
+ P8_45_default_pin: pinmux_P8_45_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data0.gpio2_6 */
+ P8_45_gpio_pin: pinmux_P8_45_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data0.gpio2_6 */
+ P8_45_gpio_pu_pin: pinmux_P8_45_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data0.gpio2_6 */
+ P8_45_gpio_pd_pin: pinmux_P8_45_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data0.gpio2_6 */
+ P8_45_gpio_input_pin: pinmux_P8_45_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data0.gpio2_6 */
+ P8_45_pwm_pin: pinmux_P8_45_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* lcd_data0.ehrpwm2a */
+ P8_45_pruout_pin: pinmux_P8_45_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data0.pru1_out0 */
+ P8_45_pruin_pin: pinmux_P8_45_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a0, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data0.pru1_in0 */
+
+ /* P8_46 (ZCZ ball R2) hdmi */
+ P8_46_default_pin: pinmux_P8_46_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data1.gpio2_7 */
+ P8_46_gpio_pin: pinmux_P8_46_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_data1.gpio2_7 */
+ P8_46_gpio_pu_pin: pinmux_P8_46_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_data1.gpio2_7 */
+ P8_46_gpio_pd_pin: pinmux_P8_46_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_data1.gpio2_7 */
+ P8_46_gpio_input_pin: pinmux_P8_46_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_INPUT | MUX_MODE7) >; }; /* lcd_data1.gpio2_7 */
+ P8_46_pwm_pin: pinmux_P8_46_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* lcd_data1.ehrpwm2b */
+ P8_46_pruout_pin: pinmux_P8_46_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_data1.pru1_out1 */
+ P8_46_pruin_pin: pinmux_P8_46_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08a4, PIN_INPUT | MUX_MODE6) >; }; /* lcd_data1.pru1_in1 */
+
+ /************************/
+ /* P9 Header */
+ /************************/
+
+ /* P9_01 GND */
+
+ /* P9_02 GND */
+
+ /* P9_03 3V3 */
+
+ /* P9_04 3V3 */
+
+ /* P9_05 VDD_5V */
+
+ /* P9_06 VDD_5V */
+
+ /* P9_07 SYS_5V */
+
+ /* P9_08 SYS_5V */
+
+ /* P9_09 PWR_BUT */
+
+ /* P9_10 RSTn */
+
+ /* P9_11 (ZCZ ball T17) gpio0_30 */
+ P9_11_default_pin: pinmux_P9_11_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wait0.gpio0_30 */
+ P9_11_gpio_pin: pinmux_P9_11_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wait0.gpio0_30 */
+ P9_11_gpio_pu_pin: pinmux_P9_11_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wait0.gpio0_30 */
+ P9_11_gpio_pd_pin: pinmux_P9_11_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wait0.gpio0_30 */
+ P9_11_gpio_input_pin: pinmux_P9_11_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_wait0.gpio0_30 */
+ P9_11_uart_pin: pinmux_P9_11_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; }; /* gpmc_wait0.uart4_rxd */
+
+ /* P9_12 (ZCZ ball U18) gpio1_28 */
+ P9_12_default_pin: pinmux_P9_12_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+ P9_12_gpio_pin: pinmux_P9_12_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+ P9_12_gpio_pu_pin: pinmux_P9_12_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+ P9_12_gpio_pd_pin: pinmux_P9_12_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+ P9_12_gpio_input_pin: pinmux_P9_12_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+
+ /* P9_13 (ZCZ ball U17) gpio0_31 */
+ P9_13_default_pin: pinmux_P9_13_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wpn.gpio0_31 */
+ P9_13_gpio_pin: pinmux_P9_13_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wpn.gpio0_31 */
+ P9_13_gpio_pu_pin: pinmux_P9_13_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wpn.gpio0_31 */
+ P9_13_gpio_pd_pin: pinmux_P9_13_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wpn.gpio0_31 */
+ P9_13_gpio_input_pin: pinmux_P9_13_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_wpn.gpio0_31 */
+ P9_13_uart_pin: pinmux_P9_13_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; }; /* gpmc_wpn.uart4_txd */
+
+ /* P9_14 (ZCZ ball U14) gpio1_18 */
+ P9_14_default_pin: pinmux_P9_14_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a2.gpio1_18 */
+ P9_14_gpio_pin: pinmux_P9_14_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a2.gpio1_18 */
+ P9_14_gpio_pu_pin: pinmux_P9_14_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a2.gpio1_18 */
+ P9_14_gpio_pd_pin: pinmux_P9_14_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a2.gpio1_18 */
+ P9_14_gpio_input_pin: pinmux_P9_14_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_a2.gpio1_18 */
+ P9_14_pwm_pin: pinmux_P9_14_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_a2.ehrpwm1a */
+
+ /* P9_15 (ZCZ ball R13) gpio1_16 */
+ P9_15_default_pin: pinmux_P9_15_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a0.gpio1_16 */
+ P9_15_gpio_pin: pinmux_P9_15_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0840, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a0.gpio1_16 */
+ P9_15_gpio_pu_pin: pinmux_P9_15_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a0.gpio1_16 */
+ P9_15_gpio_pd_pin: pinmux_P9_15_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a0.gpio1_16 */
+ P9_15_gpio_input_pin: pinmux_P9_15_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0840, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_a0.gpio1_16 */
+ P9_15_pwm_pin: pinmux_P9_15_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_a0.ehrpwm1_tripzone_input */
+
+ /* P9_16 (ZCZ ball T14) gpio1_19 */
+ P9_16_default_pin: pinmux_P9_16_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a3.gpio1_19 */
+ P9_16_gpio_pin: pinmux_P9_16_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x084c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a3.gpio1_19 */
+ P9_16_gpio_pu_pin: pinmux_P9_16_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a3.gpio1_19 */
+ P9_16_gpio_pd_pin: pinmux_P9_16_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a3.gpio1_19 */
+ P9_16_gpio_input_pin: pinmux_P9_16_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x084c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_a3.gpio1_19 */
+ P9_16_pwm_pin: pinmux_P9_16_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_a3.ehrpwm1b */
+
+ /* P9_17 (ZCZ ball A16) gpio0_5 */
+ P9_17_default_pin: pinmux_P9_17_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_cs0.gpio0_5 */
+ P9_17_gpio_pin: pinmux_P9_17_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* spi0_cs0.gpio0_5 */
+ P9_17_gpio_pu_pin: pinmux_P9_17_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_cs0.gpio0_5 */
+ P9_17_gpio_pd_pin: pinmux_P9_17_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* spi0_cs0.gpio0_5 */
+ P9_17_gpio_input_pin: pinmux_P9_17_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_INPUT | MUX_MODE7) >; }; /* spi0_cs0.gpio0_5 */
+ P9_17_spi_cs_pin: pinmux_P9_17_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_cs0.spi0_cs0 */
+ P9_17_i2c_pin: pinmux_P9_17_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* spi0_cs0.i2c1_scl */
+ P9_17_pwm_pin: pinmux_P9_17_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* spi0_cs0.ehrpwm0_synci */
+ P9_17_pru_uart_pin: pinmux_P9_17_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* spi0_cs0.pr1_uart0_txd */
+
+ /* P9_18 (ZCZ ball B16) gpio0_4 */
+ P9_18_default_pin: pinmux_P9_18_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_d1.gpio0_4 */
+ P9_18_gpio_pin: pinmux_P9_18_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* spi0_d1.gpio0_4 */
+ P9_18_gpio_pu_pin: pinmux_P9_18_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_d1.gpio0_4 */
+ P9_18_gpio_pd_pin: pinmux_P9_18_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* spi0_d1.gpio0_4 */
+ P9_18_gpio_input_pin: pinmux_P9_18_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_INPUT | MUX_MODE7) >; }; /* spi0_d1.gpio0_4 */
+ P9_18_spi_pin: pinmux_P9_18_spi_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_d1.spi0_d1 */
+ P9_18_i2c_pin: pinmux_P9_18_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* spi0_d1.i2c1_sda */
+ P9_18_pwm_pin: pinmux_P9_18_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* spi0_d1.ehrpwm0_tripzone_input */
+ P9_18_pru_uart_pin: pinmux_P9_18_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* spi0_d1.pr1_uart0_rxd */
+
+ /* P9_19 (ZCZ ball D17) i2c2_scl */
+ P9_19_default_pin: pinmux_P9_19_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_rtsn.i2c2_scl */
+ P9_19_gpio_pin: pinmux_P9_19_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart1_rtsn.gpio0_13 */
+ P9_19_gpio_pu_pin: pinmux_P9_19_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_rtsn.gpio0_13 */
+ P9_19_gpio_pd_pin: pinmux_P9_19_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart1_rtsn.gpio0_13 */
+ P9_19_gpio_input_pin: pinmux_P9_19_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_INPUT | MUX_MODE7) >; }; /* uart1_rtsn.gpio0_13 */
+ P9_19_timer_pin: pinmux_P9_19_timer_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* uart1_rtsn.timer5 */
+ P9_19_can_pin: pinmux_P9_19_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_INPUT_PULLUP | MUX_MODE2) >; }; /* uart1_rtsn.dcan0_rx */
+ P9_19_i2c_pin: pinmux_P9_19_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_rtsn.i2c2_scl */
+ P9_19_spi_cs_pin: pinmux_P9_19_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* uart1_rtsn.spi1_cs1 */
+ P9_19_pru_uart_pin: pinmux_P9_19_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; }; /* uart1_rtsn.pr1_uart0_rts_n */
+
+ /* P9_20 (ZCZ ball D18) i2c2_sda */
+ P9_20_default_pin: pinmux_P9_20_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_ctsn.i2c2_sda */
+ P9_20_gpio_pin: pinmux_P9_20_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart1_ctsn.gpio0_12 */
+ P9_20_gpio_pu_pin: pinmux_P9_20_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_ctsn.gpio0_12 */
+ P9_20_gpio_pd_pin: pinmux_P9_20_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart1_ctsn.gpio0_12 */
+ P9_20_gpio_input_pin: pinmux_P9_20_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_INPUT | MUX_MODE7) >; }; /* uart1_ctsn.gpio0_12 */
+ P9_20_timer_pin: pinmux_P9_20_timer_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* uart1_ctsn.timer6 */
+ P9_20_can_pin: pinmux_P9_20_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | MUX_MODE2) >; }; /* uart1_ctsn.dcan0_tx */
+ P9_20_i2c_pin: pinmux_P9_20_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_ctsn.i2c2_sda */
+ P9_20_spi_cs_pin: pinmux_P9_20_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* uart1_ctsn.spi1_cs0 */
+ P9_20_pru_uart_pin: pinmux_P9_20_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; }; /* uart1_ctsn.pr1_uart0_cts_n */
+
+ /* P9_21 (ZCZ ball B17) gpio0_3 */
+ P9_21_default_pin: pinmux_P9_21_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_d0.gpio0_3 */
+ P9_21_gpio_pin: pinmux_P9_21_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* spi0_d0.gpio0_3 */
+ P9_21_gpio_pu_pin: pinmux_P9_21_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_d0.gpio0_3 */
+ P9_21_gpio_pd_pin: pinmux_P9_21_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* spi0_d0.gpio0_3 */
+ P9_21_gpio_input_pin: pinmux_P9_21_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_INPUT | MUX_MODE7) >; }; /* spi0_d0.gpio0_3 */
+ P9_21_spi_pin: pinmux_P9_21_spi_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_d0.spi0_d0 */
+ P9_21_uart_pin: pinmux_P9_21_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* spi0_d0.uart2_txd */
+ P9_21_i2c_pin: pinmux_P9_21_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* spi0_d0.i2c2_scl */
+ P9_21_pwm_pin: pinmux_P9_21_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* spi0_d0.ehrpwm0b */
+ P9_21_pru_uart_pin: pinmux_P9_21_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* spi0_d0.pr1_uart0_rts_n */
+
+ /* P9_22 (ZCZ ball A17) gpio0_2 */
+ P9_22_default_pin: pinmux_P9_22_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_sclk.gpio0_2 */
+ P9_22_gpio_pin: pinmux_P9_22_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* spi0_sclk.gpio0_2 */
+ P9_22_gpio_pu_pin: pinmux_P9_22_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_sclk.gpio0_2 */
+ P9_22_gpio_pd_pin: pinmux_P9_22_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* spi0_sclk.gpio0_2 */
+ P9_22_gpio_input_pin: pinmux_P9_22_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_INPUT | MUX_MODE7) >; }; /* spi0_sclk.gpio0_2 */
+ P9_22_spi_sclk_pin: pinmux_P9_22_spi_sclk_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_sclk.spi0_sclk */
+ P9_22_uart_pin: pinmux_P9_22_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* spi0_sclk.uart2_rxd */
+ P9_22_i2c_pin: pinmux_P9_22_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* spi0_sclk.i2c2_sda */
+ P9_22_pwm_pin: pinmux_P9_22_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* spi0_sclk.ehrpwm0a */
+ P9_22_pru_uart_pin: pinmux_P9_22_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* spi0_sclk.pr1_uart0_cts_n */
+
+ /* P9_23 (ZCZ ball V14) gpio1_17 */
+ P9_23_default_pin: pinmux_P9_23_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a1.gpio1_17 */
+ P9_23_gpio_pin: pinmux_P9_23_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0844, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a1.gpio1_17 */
+ P9_23_gpio_pu_pin: pinmux_P9_23_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a1.gpio1_17 */
+ P9_23_gpio_pd_pin: pinmux_P9_23_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a1.gpio1_17 */
+ P9_23_gpio_input_pin: pinmux_P9_23_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0844, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_a1.gpio1_17 */
+ P9_23_pwm_pin: pinmux_P9_23_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_a1.ehrpwm0_synco */
+
+ /* P9_24 (ZCZ ball D15) gpio0_15 */
+ P9_24_default_pin: pinmux_P9_24_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_txd.gpio0_15 */
+ P9_24_gpio_pin: pinmux_P9_24_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart1_txd.gpio0_15 */
+ P9_24_gpio_pu_pin: pinmux_P9_24_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_txd.gpio0_15 */
+ P9_24_gpio_pd_pin: pinmux_P9_24_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart1_txd.gpio0_15 */
+ P9_24_gpio_input_pin: pinmux_P9_24_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_INPUT | MUX_MODE7) >; }; /* uart1_txd.gpio0_15 */
+ P9_24_uart_pin: pinmux_P9_24_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* uart1_txd.uart1_txd */
+ P9_24_can_pin: pinmux_P9_24_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_INPUT_PULLUP | MUX_MODE2) >; }; /* uart1_txd.dcan1_rx */
+ P9_24_i2c_pin: pinmux_P9_24_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_txd.i2c1_scl */
+ P9_24_pru_uart_pin: pinmux_P9_24_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; }; /* uart1_txd.pr1_uart0_txd */
+ P9_24_pruin_pin: pinmux_P9_24_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_INPUT | MUX_MODE6) >; }; /* uart1_txd.pru0_in16 */
+
+ /* P9_25 (ZCZ ball A14) audio */
+ P9_25_default_pin: pinmux_P9_25_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkx.gpio3_21 */
+ P9_25_gpio_pin: pinmux_P9_25_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkx.gpio3_21 */
+ P9_25_gpio_pu_pin: pinmux_P9_25_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkx.gpio3_21 */
+ P9_25_gpio_pd_pin: pinmux_P9_25_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkx.gpio3_21 */
+ P9_25_gpio_input_pin: pinmux_P9_25_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_ahclkx.gpio3_21 */
+ P9_25_qep_pin: pinmux_P9_25_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_ahclkx.eqep0_strobe */
+ P9_25_pruout_pin: pinmux_P9_25_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_ahclkx.pru0_out7 */
+ P9_25_pruin_pin: pinmux_P9_25_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_ahclkx.pru0_in7 */
+
+ /* P9_26 (ZCZ ball D16) gpio0_14 */
+ P9_26_default_pin: pinmux_P9_26_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_rxd.gpio0_14 */
+ P9_26_gpio_pin: pinmux_P9_26_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart1_rxd.gpio0_14 */
+ P9_26_gpio_pu_pin: pinmux_P9_26_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_rxd.gpio0_14 */
+ P9_26_gpio_pd_pin: pinmux_P9_26_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart1_rxd.gpio0_14 */
+ P9_26_gpio_input_pin: pinmux_P9_26_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_INPUT | MUX_MODE7) >; }; /* uart1_rxd.gpio0_14 */
+ P9_26_uart_pin: pinmux_P9_26_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* uart1_rxd.uart1_rxd */
+ P9_26_can_pin: pinmux_P9_26_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | MUX_MODE2) >; }; /* uart1_rxd.dcan1_tx */
+ P9_26_i2c_pin: pinmux_P9_26_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_rxd.i2c1_sda */
+ P9_26_pru_uart_pin: pinmux_P9_26_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; }; /* uart1_rxd.pr1_uart0_rxd */
+ P9_26_pruin_pin: pinmux_P9_26_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_INPUT | MUX_MODE6) >; }; /* uart1_rxd.pru1_in16 */
+
+ /* P9_27 (ZCZ ball C13) gpio3_19 */
+ P9_27_default_pin: pinmux_P9_27_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsr.gpio3_19 */
+ P9_27_gpio_pin: pinmux_P9_27_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsr.gpio3_19 */
+ P9_27_gpio_pu_pin: pinmux_P9_27_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsr.gpio3_19 */
+ P9_27_gpio_pd_pin: pinmux_P9_27_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsr.gpio3_19 */
+ P9_27_gpio_input_pin: pinmux_P9_27_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_fsr.gpio3_19 */
+ P9_27_qep_pin: pinmux_P9_27_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_fsr.eqep0b_in */
+ P9_27_pruout_pin: pinmux_P9_27_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_fsr.pru0_out5 */
+ P9_27_pruin_pin: pinmux_P9_27_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_fsr.pru0_in5 */
+
+ /* P9_28 (ZCZ ball C12) audio */
+ P9_28_default_pin: pinmux_P9_28_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkr.gpio3_17 */
+ P9_28_gpio_pin: pinmux_P9_28_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkr.gpio3_17 */
+ P9_28_gpio_pu_pin: pinmux_P9_28_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkr.gpio3_17 */
+ P9_28_gpio_pd_pin: pinmux_P9_28_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkr.gpio3_17 */
+ P9_28_gpio_input_pin: pinmux_P9_28_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_ahclkr.gpio3_17 */
+ P9_28_pwm_pin: pinmux_P9_28_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_ahclkr.ehrpwm0_synci */
+ P9_28_spi_cs_pin: pinmux_P9_28_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* mcasp0_ahclkr.spi1_cs0 */
+ P9_28_pwm2_pin: pinmux_P9_28_pwm2_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; }; /* mcasp0_ahclkr.ecap2_in_pwm2_out */
+ P9_28_pruout_pin: pinmux_P9_28_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_ahclkr.pru0_out3 */
+ P9_28_pruin_pin: pinmux_P9_28_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_ahclkr.pru0_in3 */
+
+ /* P9_29 (ZCZ ball B13) audio */
+ P9_29_default_pin: pinmux_P9_29_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsx.gpio3_15 */
+ P9_29_gpio_pin: pinmux_P9_29_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsx.gpio3_15 */
+ P9_29_gpio_pu_pin: pinmux_P9_29_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsx.gpio3_15 */
+ P9_29_gpio_pd_pin: pinmux_P9_29_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsx.gpio3_15 */
+ P9_29_gpio_input_pin: pinmux_P9_29_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_fsx.gpio3_15 */
+ P9_29_pwm_pin: pinmux_P9_29_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_fsx.ehrpwm0b */
+ P9_29_spi_pin: pinmux_P9_29_spi_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* mcasp0_fsx.spi1_d0 */
+ P9_29_pruout_pin: pinmux_P9_29_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_fsx.pru0_out1 */
+ P9_29_pruin_pin: pinmux_P9_29_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_fsx.pru0_in1 */
+
+ /* P9_30 (ZCZ ball D12) gpio-hog wl1835 */
+
+ /* P9_31 (ZCZ ball A13) audio */
+ P9_31_default_pin: pinmux_P9_31_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkx.gpio3_14 */
+ P9_31_gpio_pin: pinmux_P9_31_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkx.gpio3_14 */
+ P9_31_gpio_pu_pin: pinmux_P9_31_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkx.gpio3_14 */
+ P9_31_gpio_pd_pin: pinmux_P9_31_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkx.gpio3_14 */
+ P9_31_gpio_input_pin: pinmux_P9_31_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_aclkx.gpio3_14 */
+ P9_31_pwm_pin: pinmux_P9_31_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_aclkx.ehrpwm0a */
+ P9_31_spi_sclk_pin: pinmux_P9_31_spi_sclk_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* mcasp0_aclkx.spi1_sclk */
+ P9_31_pruout_pin: pinmux_P9_31_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_aclkx.pru0_out0 */
+ P9_31_pruin_pin: pinmux_P9_31_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_aclkx.pru0_in0 */
+
+ /* P9_32 VADC */
+
+ /* P9_33 (ZCZ ball C8) AIN4 */
+
+ /* P9_34 AGND */
+
+ /* P9_35 (ZCZ ball A8) AIN6 */
+
+ /* P9_36 (ZCZ ball B8) AIN5 */
+
+ /* P9_37 (ZCZ ball B7) AIN2 */
+
+ /* P9_38 (ZCZ ball A7) AIN3 */
+
+ /* P9_39 (ZCZ ball B6) AIN0 */
+
+ /* P9_40 (ZCZ ball C7) AIN1 */
+
+ /* P9_41 (ZCZ ball D14) gpio0_20 */
+ P9_41_default_pin: pinmux_P9_41_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P9_41_gpio_pin: pinmux_P9_41_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P9_41_gpio_pu_pin: pinmux_P9_41_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P9_41_gpio_pd_pin: pinmux_P9_41_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P9_41_gpio_input_pin: pinmux_P9_41_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_INPUT | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P9_41_timer_pin: pinmux_P9_41_timer_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* xdma_event_intr1.timer7 */
+ P9_41_pruin_pin: pinmux_P9_41_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_INPUT | MUX_MODE5) >; }; /* xdma_event_intr1.pru0_in16 */
+
+ /* P9_41.1 */
+ /* P9_91 (ZCZ ball D13) gpio3_20 */
+ P9_91_default_pin: pinmux_P9_91_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr1.gpio3_20 */
+ P9_91_gpio_pin: pinmux_P9_91_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr1.gpio3_20 */
+ P9_91_gpio_pu_pin: pinmux_P9_91_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr1.gpio3_20 */
+ P9_91_gpio_pd_pin: pinmux_P9_91_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr1.gpio3_20 */
+ P9_91_gpio_input_pin: pinmux_P9_91_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_axr1.gpio3_20 */
+ P9_91_qep_pin: pinmux_P9_91_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_axr1.eqep0_index */
+ P9_91_pruout_pin: pinmux_P9_91_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_axr1.pru0_out6 */
+ P9_91_pruin_pin: pinmux_P9_91_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_axr1.pru0_in6 */
+
+ /* P9_42 (ZCZ ball C18) gpio0_7 */
+ P9_42_default_pin: pinmux_P9_42_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* eCAP0_in_PWM0_out.gpio0_7 */
+ P9_42_gpio_pin: pinmux_P9_42_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* eCAP0_in_PWM0_out.gpio0_7 */
+ P9_42_gpio_pu_pin: pinmux_P9_42_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* eCAP0_in_PWM0_out.gpio0_7 */
+ P9_42_gpio_pd_pin: pinmux_P9_42_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* eCAP0_in_PWM0_out.gpio0_7 */
+ P9_42_gpio_input_pin: pinmux_P9_42_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_INPUT | MUX_MODE7) >; }; /* eCAP0_in_PWM0_out.gpio0_7 */
+ P9_42_pwm_pin: pinmux_P9_42_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE0) >; }; /* eCAP0_in_PWM0_out.ecap0_in_pwm0_out */
+ P9_42_uart_pin: pinmux_P9_42_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* eCAP0_in_PWM0_out.uart3_txd */
+ P9_42_spi_cs_pin: pinmux_P9_42_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* eCAP0_in_PWM0_out.spi1_cs1 */
+ P9_42_pru_ecap_pin: pinmux_P9_42_pru_ecap_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* eCAP0_in_PWM0_out.pr1_ecap0_ecap_capin_apwm_o */
+ P9_42_spi_sclk_pin: pinmux_P9_42_spi_sclk_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* eCAP0_in_PWM0_out.spi1_sclk */
+
+ /* P9_42.1 */
+ /* P9_92 (ZCZ ball B12) gpio3_18 */
+ P9_92_default_pin: pinmux_P9_92_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkr.gpio3_18 */
+ P9_92_gpio_pin: pinmux_P9_92_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkr.gpio3_18 */
+ P9_92_gpio_pu_pin: pinmux_P9_92_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkr.gpio3_18 */
+ P9_92_gpio_pd_pin: pinmux_P9_92_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkr.gpio3_18 */
+ P9_92_gpio_input_pin: pinmux_P9_92_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_aclkr.gpio3_18 */
+ P9_92_qep_pin: pinmux_P9_92_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_aclkr.eqep0a_in */
+ P9_92_pruout_pin: pinmux_P9_92_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_aclkr.pru0_out4 */
+ P9_92_pruin_pin: pinmux_P9_92_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_aclkr.pru0_in4 */
+
+ /* P9_43 GND */
+
+ /* P9_44 GND */
+
+ /* P9_45 GND */
+
+ /* P9_46 GND */
+};
+
+&i2c1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ clock-frequency = <100000>;
+};
+
+&i2c2 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ clock-frequency = <100000>;
+};
+
+&uart1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&uart2 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&uart3 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&uart4 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&uart5 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&dcan0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&dcan1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&eqep0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ count_mode = <0>; /* 0 - Quadrature mode, normal 90 phase offset cha & chb. 1 - Direction mode. cha input = clock, chb input = direction */
+ swap_inputs = <0>; /* Are channel A and channel B swapped? (0 - no, 1 - yes) */
+ invert_qa = <1>; /* Should we invert the channel A input? */
+ invert_qb = <1>; /* Should we invert the channel B input? I invert these because my encoder outputs drive transistors that pull down the pins */
+ invert_qi = <0>; /* Should we invert the index input? */
+ invert_qs = <0>; /* Should we invert the strobe input? */
+};
+
+&eqep1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ count_mode = <0>; /* 0 - Quadrature mode, normal 90 phase offset cha & chb. 1 - Direction mode. cha input = clock, chb input = direction */
+ swap_inputs = <0>; /* Are channel A and channel B swapped? (0 - no, 1 - yes) */
+ invert_qa = <1>; /* Should we invert the channel A input? */
+ invert_qb = <1>; /* Should we invert the channel B input? I invert these because my encoder outputs drive transistors that pull down the pins */
+ invert_qi = <0>; /* Should we invert the index input? */
+ invert_qs = <0>; /* Should we invert the strobe input? */
+};
+
+&eqep2 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ count_mode = <0>; /* 0 - Quadrature mode, normal 90 phase offset cha & chb. 1 - Direction mode. cha input = clock, chb input = direction */
+ swap_inputs = <0>; /* Are channel A and channel B swapped? (0 - no, 1 - yes) */
+ invert_qa = <1>; /* Should we invert the channel A input? */
+ invert_qb = <1>; /* Should we invert the channel B input? I invert these because my encoder outputs drive transistors that pull down the pins */
+ invert_qi = <0>; /* Should we invert the index input? */
+ invert_qs = <0>; /* Should we invert the strobe input? */
+};
+
+&epwmss0 {
+ status = "okay";
+};
+
+&epwmss1 {
+ status = "okay";
+};
+
+&epwmss2 {
+ status = "okay";
+};
+
+&ehrpwm0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&ehrpwm1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&ehrpwm2 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&ecap0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&ecap1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&ecap2 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&spi0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ channel@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compatible = "spidev";
+ symlink = "spi/0.0";
+
+ reg = <0>;
+ spi-max-frequency = <16000000>;
+ spi-cpha;
+ };
+
+ channel@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compatible = "spidev";
+ symlink = "spi/0.1";
+
+ reg = <1>;
+ spi-max-frequency = <16000000>;
+ };
+};
+
+&spi1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ channel@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compatible = "spidev";
+ symlink = "spi/1.0";
+
+ reg = <0>;
+ spi-max-frequency = <16000000>;
+ spi-cpha;
+ };
+
+ channel@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compatible = "spidev";
+ symlink = "spi/1.1";
+
+ reg = <1>;
+ spi-max-frequency = <16000000>;
+ };
+};
+
+/**********************************************************************/
+/* Pin Multiplex Helpers */
+/* */
+/* These provide userspace runtime pin configuration for the */
+/* BeagleBone cape expansion headers */
+/**********************************************************************/
+
+&ocp {
+ /************************/
+ /* P8 Header */
+ /************************/
+
+ /* P8_01 GND */
+
+ /* P8_02 GND */
+
+
+ /* P8_03 (ZCZ ball R9) emmc */
+ P8_03_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_03_default_pin>;
+ pinctrl-1 = <&P8_03_gpio_pin>;
+ pinctrl-2 = <&P8_03_gpio_pu_pin>;
+ pinctrl-3 = <&P8_03_gpio_pd_pin>;
+ pinctrl-4 = <&P8_03_gpio_input_pin>;
+ };
+
+ /* P8_04 (ZCZ ball T9) emmc */
+ P8_04_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_04_default_pin>;
+ pinctrl-1 = <&P8_04_gpio_pin>;
+ pinctrl-2 = <&P8_04_gpio_pu_pin>;
+ pinctrl-3 = <&P8_04_gpio_pd_pin>;
+ pinctrl-4 = <&P8_04_gpio_input_pin>;
+ };
+
+ /* P8_05 (ZCZ ball R8) emmc */
+ P8_05_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_05_default_pin>;
+ pinctrl-1 = <&P8_05_gpio_pin>;
+ pinctrl-2 = <&P8_05_gpio_pu_pin>;
+ pinctrl-3 = <&P8_05_gpio_pd_pin>;
+ pinctrl-4 = <&P8_05_gpio_input_pin>;
+ };
+
+ /* P8_06 (ZCZ ball T8) emmc */
+ P8_06_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_06_default_pin>;
+ pinctrl-1 = <&P8_06_gpio_pin>;
+ pinctrl-2 = <&P8_06_gpio_pu_pin>;
+ pinctrl-3 = <&P8_06_gpio_pd_pin>;
+ pinctrl-4 = <&P8_06_gpio_input_pin>;
+ };
+
+ /* P8_07 (ZCZ ball R7) */
+ P8_07_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+ pinctrl-0 = <&P8_07_default_pin>;
+ pinctrl-1 = <&P8_07_gpio_pin>;
+ pinctrl-2 = <&P8_07_gpio_pu_pin>;
+ pinctrl-3 = <&P8_07_gpio_pd_pin>;
+ pinctrl-4 = <&P8_07_gpio_input_pin>;
+ pinctrl-5 = <&P8_07_timer_pin>;
+ };
+
+ /* P8_08 (ZCZ ball T7) */
+ P8_08_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+ pinctrl-0 = <&P8_08_default_pin>;
+ pinctrl-1 = <&P8_08_gpio_pin>;
+ pinctrl-2 = <&P8_08_gpio_pu_pin>;
+ pinctrl-3 = <&P8_08_gpio_pd_pin>;
+ pinctrl-4 = <&P8_08_gpio_input_pin>;
+ pinctrl-5 = <&P8_08_timer_pin>;
+ };
+
+ /* P8_09 (ZCZ ball T6) */
+ P8_09_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+ pinctrl-0 = <&P8_09_default_pin>;
+ pinctrl-1 = <&P8_09_gpio_pin>;
+ pinctrl-2 = <&P8_09_gpio_pu_pin>;
+ pinctrl-3 = <&P8_09_gpio_pd_pin>;
+ pinctrl-4 = <&P8_09_gpio_input_pin>;
+ pinctrl-5 = <&P8_09_timer_pin>;
+ };
+
+ /* P8_10 (ZCZ ball U6) */
+ P8_10_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+ pinctrl-0 = <&P8_10_default_pin>;
+ pinctrl-1 = <&P8_10_gpio_pin>;
+ pinctrl-2 = <&P8_10_gpio_pu_pin>;
+ pinctrl-3 = <&P8_10_gpio_pd_pin>;
+ pinctrl-4 = <&P8_10_gpio_input_pin>;
+ pinctrl-5 = <&P8_10_timer_pin>;
+ };
+
+ /* P8_11 (ZCZ ball R12) */
+ P8_11_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout";
+ pinctrl-0 = <&P8_11_default_pin>;
+ pinctrl-1 = <&P8_11_gpio_pin>;
+ pinctrl-2 = <&P8_11_gpio_pu_pin>;
+ pinctrl-3 = <&P8_11_gpio_pd_pin>;
+ pinctrl-4 = <&P8_11_gpio_input_pin>;
+ pinctrl-5 = <&P8_11_qep_pin>;
+ pinctrl-6 = <&P8_11_pruout_pin>;
+ };
+
+ /* P8_12 (ZCZ ball T12) */
+ P8_12_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout";
+ pinctrl-0 = <&P8_12_default_pin>;
+ pinctrl-1 = <&P8_12_gpio_pin>;
+ pinctrl-2 = <&P8_12_gpio_pu_pin>;
+ pinctrl-3 = <&P8_12_gpio_pd_pin>;
+ pinctrl-4 = <&P8_12_gpio_input_pin>;
+ pinctrl-5 = <&P8_12_qep_pin>;
+ pinctrl-6 = <&P8_12_pruout_pin>;
+ };
+
+ /* P8_13 (ZCZ ball T10) */
+ P8_13_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P8_13_default_pin>;
+ pinctrl-1 = <&P8_13_gpio_pin>;
+ pinctrl-2 = <&P8_13_gpio_pu_pin>;
+ pinctrl-3 = <&P8_13_gpio_pd_pin>;
+ pinctrl-4 = <&P8_13_gpio_input_pin>;
+ pinctrl-5 = <&P8_13_pwm_pin>;
+ };
+
+ /* P8_14 (ZCZ ball T11) wl1835: wl_en */
+
+ /* P8_15 (ZCZ ball U13) */
+ P8_15_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pru_ecap", "pruin";
+ pinctrl-0 = <&P8_15_default_pin>;
+ pinctrl-1 = <&P8_15_gpio_pin>;
+ pinctrl-2 = <&P8_15_gpio_pu_pin>;
+ pinctrl-3 = <&P8_15_gpio_pd_pin>;
+ pinctrl-4 = <&P8_15_gpio_input_pin>;
+ pinctrl-5 = <&P8_15_qep_pin>;
+ pinctrl-6 = <&P8_15_pru_ecap_pin>;
+ pinctrl-7 = <&P8_15_pruin_pin>;
+ };
+
+ /* P8_16 (ZCZ ball V13) */
+ P8_16_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruin";
+ pinctrl-0 = <&P8_16_default_pin>;
+ pinctrl-1 = <&P8_16_gpio_pin>;
+ pinctrl-2 = <&P8_16_gpio_pu_pin>;
+ pinctrl-3 = <&P8_16_gpio_pd_pin>;
+ pinctrl-4 = <&P8_16_gpio_input_pin>;
+ pinctrl-5 = <&P8_16_qep_pin>;
+ pinctrl-6 = <&P8_16_pruin_pin>;
+ };
+
+ /* P8_17 (ZCZ ball U12) wl1835: wl_irq */
+
+ /* P8_18 (ZCZ ball V12) */
+ P8_18_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_18_default_pin>;
+ pinctrl-1 = <&P8_18_gpio_pin>;
+ pinctrl-2 = <&P8_18_gpio_pu_pin>;
+ pinctrl-3 = <&P8_18_gpio_pd_pin>;
+ pinctrl-4 = <&P8_18_gpio_input_pin>;
+ };
+
+ /* P8_19 (ZCZ ball U10) */
+ P8_19_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P8_19_default_pin>;
+ pinctrl-1 = <&P8_19_gpio_pin>;
+ pinctrl-2 = <&P8_19_gpio_pu_pin>;
+ pinctrl-3 = <&P8_19_gpio_pd_pin>;
+ pinctrl-4 = <&P8_19_gpio_input_pin>;
+ pinctrl-5 = <&P8_19_pwm_pin>;
+ };
+
+ /* P8_20 (ZCZ ball V9) emmc */
+ P8_20_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P8_20_default_pin>;
+ pinctrl-1 = <&P8_20_gpio_pin>;
+ pinctrl-2 = <&P8_20_gpio_pu_pin>;
+ pinctrl-3 = <&P8_20_gpio_pd_pin>;
+ pinctrl-4 = <&P8_20_gpio_input_pin>;
+ pinctrl-5 = <&P8_20_pruout_pin>;
+ pinctrl-6 = <&P8_20_pruin_pin>;
+ };
+
+ /* P8_21 (ZCZ ball U9) emmc */
+ P8_21_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P8_21_default_pin>;
+ pinctrl-1 = <&P8_21_gpio_pin>;
+ pinctrl-2 = <&P8_21_gpio_pu_pin>;
+ pinctrl-3 = <&P8_21_gpio_pd_pin>;
+ pinctrl-4 = <&P8_21_gpio_input_pin>;
+ pinctrl-5 = <&P8_21_pruout_pin>;
+ pinctrl-6 = <&P8_21_pruin_pin>;
+ };
+
+ /* P8_22 (ZCZ ball V8) emmc */
+ P8_22_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_22_default_pin>;
+ pinctrl-1 = <&P8_22_gpio_pin>;
+ pinctrl-2 = <&P8_22_gpio_pu_pin>;
+ pinctrl-3 = <&P8_22_gpio_pd_pin>;
+ pinctrl-4 = <&P8_22_gpio_input_pin>;
+ };
+
+ /* P8_23 (ZCZ ball U8) emmc */
+ P8_23_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_23_default_pin>;
+ pinctrl-1 = <&P8_23_gpio_pin>;
+ pinctrl-2 = <&P8_23_gpio_pu_pin>;
+ pinctrl-3 = <&P8_23_gpio_pd_pin>;
+ pinctrl-4 = <&P8_23_gpio_input_pin>;
+ };
+
+ /* P8_24 (ZCZ ball V7) emmc */
+ P8_24_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_24_default_pin>;
+ pinctrl-1 = <&P8_24_gpio_pin>;
+ pinctrl-2 = <&P8_24_gpio_pu_pin>;
+ pinctrl-3 = <&P8_24_gpio_pd_pin>;
+ pinctrl-4 = <&P8_24_gpio_input_pin>;
+ };
+
+ /* P8_25 (ZCZ ball U7) emmc */
+ P8_25_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P8_25_default_pin>;
+ pinctrl-1 = <&P8_25_gpio_pin>;
+ pinctrl-2 = <&P8_25_gpio_pu_pin>;
+ pinctrl-3 = <&P8_25_gpio_pd_pin>;
+ pinctrl-4 = <&P8_25_gpio_input_pin>;
+ };
+
+ /* P8_26 (ZCZ ball V6) gpio-hog wl1835 */
+
+ /* P8_27 (ZCZ ball U5) hdmi */
+ P8_27_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P8_27_default_pin>;
+ pinctrl-1 = <&P8_27_gpio_pin>;
+ pinctrl-2 = <&P8_27_gpio_pu_pin>;
+ pinctrl-3 = <&P8_27_gpio_pd_pin>;
+ pinctrl-4 = <&P8_27_gpio_input_pin>;
+ pinctrl-5 = <&P8_27_pruout_pin>;
+ pinctrl-6 = <&P8_27_pruin_pin>;
+ };
+
+ /* P8_28 (ZCZ ball V5) hdmi */
+ P8_28_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P8_28_default_pin>;
+ pinctrl-1 = <&P8_28_gpio_pin>;
+ pinctrl-2 = <&P8_28_gpio_pu_pin>;
+ pinctrl-3 = <&P8_28_gpio_pd_pin>;
+ pinctrl-4 = <&P8_28_gpio_input_pin>;
+ pinctrl-5 = <&P8_28_pruout_pin>;
+ pinctrl-6 = <&P8_28_pruin_pin>;
+ };
+
+ /* P8_29 (ZCZ ball R5) hdmi */
+ P8_29_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P8_29_default_pin>;
+ pinctrl-1 = <&P8_29_gpio_pin>;
+ pinctrl-2 = <&P8_29_gpio_pu_pin>;
+ pinctrl-3 = <&P8_29_gpio_pd_pin>;
+ pinctrl-4 = <&P8_29_gpio_input_pin>;
+ pinctrl-5 = <&P8_29_pruout_pin>;
+ pinctrl-6 = <&P8_29_pruin_pin>;
+ };
+
+ /* P8_30 (ZCZ ball R6) hdmi */
+ P8_30_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P8_30_default_pin>;
+ pinctrl-1 = <&P8_30_gpio_pin>;
+ pinctrl-2 = <&P8_30_gpio_pu_pin>;
+ pinctrl-3 = <&P8_30_gpio_pd_pin>;
+ pinctrl-4 = <&P8_30_gpio_input_pin>;
+ pinctrl-5 = <&P8_30_pruout_pin>;
+ pinctrl-6 = <&P8_30_pruin_pin>;
+ };
+
+ /* P8_31 (ZCZ ball V4) hdmi */
+ P8_31_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "qep";
+ pinctrl-0 = <&P8_31_default_pin>;
+ pinctrl-1 = <&P8_31_gpio_pin>;
+ pinctrl-2 = <&P8_31_gpio_pu_pin>;
+ pinctrl-3 = <&P8_31_gpio_pd_pin>;
+ pinctrl-4 = <&P8_31_gpio_input_pin>;
+ pinctrl-5 = <&P8_31_uart_pin>;
+ pinctrl-6 = <&P8_31_qep_pin>;
+ };
+
+ /* P8_32 (ZCZ ball T5) hdmi */
+ P8_32_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep";
+ pinctrl-0 = <&P8_32_default_pin>;
+ pinctrl-1 = <&P8_32_gpio_pin>;
+ pinctrl-2 = <&P8_32_gpio_pu_pin>;
+ pinctrl-3 = <&P8_32_gpio_pd_pin>;
+ pinctrl-4 = <&P8_32_gpio_input_pin>;
+ pinctrl-5 = <&P8_32_qep_pin>;
+ };
+
+ /* P8_33 (ZCZ ball V3) hdmi */
+ P8_33_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep";
+ pinctrl-0 = <&P8_33_default_pin>;
+ pinctrl-1 = <&P8_33_gpio_pin>;
+ pinctrl-2 = <&P8_33_gpio_pu_pin>;
+ pinctrl-3 = <&P8_33_gpio_pd_pin>;
+ pinctrl-4 = <&P8_33_gpio_input_pin>;
+ pinctrl-5 = <&P8_33_qep_pin>;
+ };
+
+ /* P8_34 (ZCZ ball U4) hdmi */
+ P8_34_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P8_34_default_pin>;
+ pinctrl-1 = <&P8_34_gpio_pin>;
+ pinctrl-2 = <&P8_34_gpio_pu_pin>;
+ pinctrl-3 = <&P8_34_gpio_pd_pin>;
+ pinctrl-4 = <&P8_34_gpio_input_pin>;
+ pinctrl-5 = <&P8_34_pwm_pin>;
+ };
+
+ /* P8_35 (ZCZ ball V2) hdmi */
+ P8_35_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep";
+ pinctrl-0 = <&P8_35_default_pin>;
+ pinctrl-1 = <&P8_35_gpio_pin>;
+ pinctrl-2 = <&P8_35_gpio_pu_pin>;
+ pinctrl-3 = <&P8_35_gpio_pd_pin>;
+ pinctrl-4 = <&P8_35_gpio_input_pin>;
+ pinctrl-5 = <&P8_35_qep_pin>;
+ };
+
+ /* P8_36 (ZCZ ball U3) hdmi */
+ P8_36_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P8_36_default_pin>;
+ pinctrl-1 = <&P8_36_gpio_pin>;
+ pinctrl-2 = <&P8_36_gpio_pu_pin>;
+ pinctrl-3 = <&P8_36_gpio_pd_pin>;
+ pinctrl-4 = <&P8_36_gpio_input_pin>;
+ pinctrl-5 = <&P8_36_pwm_pin>;
+ };
+
+ /* P8_37 (ZCZ ball U1) hdmi */
+ P8_37_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "pwm";
+ pinctrl-0 = <&P8_37_default_pin>;
+ pinctrl-1 = <&P8_37_gpio_pin>;
+ pinctrl-2 = <&P8_37_gpio_pu_pin>;
+ pinctrl-3 = <&P8_37_gpio_pd_pin>;
+ pinctrl-4 = <&P8_37_gpio_input_pin>;
+ pinctrl-5 = <&P8_37_uart_pin>;
+ pinctrl-6 = <&P8_37_pwm_pin>;
+ };
+
+ /* P8_38 (ZCZ ball U2) hdmi */
+ P8_38_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "pwm";
+ pinctrl-0 = <&P8_38_default_pin>;
+ pinctrl-1 = <&P8_38_gpio_pin>;
+ pinctrl-2 = <&P8_38_gpio_pu_pin>;
+ pinctrl-3 = <&P8_38_gpio_pd_pin>;
+ pinctrl-4 = <&P8_38_gpio_input_pin>;
+ pinctrl-5 = <&P8_38_uart_pin>;
+ pinctrl-6 = <&P8_38_pwm_pin>;
+ };
+
+ /* P8_39 (ZCZ ball T3) hdmi */
+ P8_39_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P8_39_default_pin>;
+ pinctrl-1 = <&P8_39_gpio_pin>;
+ pinctrl-2 = <&P8_39_gpio_pu_pin>;
+ pinctrl-3 = <&P8_39_gpio_pd_pin>;
+ pinctrl-4 = <&P8_39_gpio_input_pin>;
+ pinctrl-5 = <&P8_39_qep_pin>;
+ pinctrl-6 = <&P8_39_pruout_pin>;
+ pinctrl-7 = <&P8_39_pruin_pin>;
+ };
+
+ /* P8_40 (ZCZ ball T4) hdmi */
+ P8_40_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P8_40_default_pin>;
+ pinctrl-1 = <&P8_40_gpio_pin>;
+ pinctrl-2 = <&P8_40_gpio_pu_pin>;
+ pinctrl-3 = <&P8_40_gpio_pd_pin>;
+ pinctrl-4 = <&P8_40_gpio_input_pin>;
+ pinctrl-5 = <&P8_40_qep_pin>;
+ pinctrl-6 = <&P8_40_pruout_pin>;
+ pinctrl-7 = <&P8_40_pruin_pin>;
+ };
+
+ /* P8_41 (ZCZ ball T1) hdmi */
+ P8_41_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P8_41_default_pin>;
+ pinctrl-1 = <&P8_41_gpio_pin>;
+ pinctrl-2 = <&P8_41_gpio_pu_pin>;
+ pinctrl-3 = <&P8_41_gpio_pd_pin>;
+ pinctrl-4 = <&P8_41_gpio_input_pin>;
+ pinctrl-5 = <&P8_41_qep_pin>;
+ pinctrl-6 = <&P8_41_pruout_pin>;
+ pinctrl-7 = <&P8_41_pruin_pin>;
+ };
+
+ /* P8_42 (ZCZ ball T2) hdmi */
+ P8_42_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P8_42_default_pin>;
+ pinctrl-1 = <&P8_42_gpio_pin>;
+ pinctrl-2 = <&P8_42_gpio_pu_pin>;
+ pinctrl-3 = <&P8_42_gpio_pd_pin>;
+ pinctrl-4 = <&P8_42_gpio_input_pin>;
+ pinctrl-5 = <&P8_42_qep_pin>;
+ pinctrl-6 = <&P8_42_pruout_pin>;
+ pinctrl-7 = <&P8_42_pruin_pin>;
+ };
+
+ /* P8_43 (ZCZ ball R3) hdmi */
+ P8_43_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P8_43_default_pin>;
+ pinctrl-1 = <&P8_43_gpio_pin>;
+ pinctrl-2 = <&P8_43_gpio_pu_pin>;
+ pinctrl-3 = <&P8_43_gpio_pd_pin>;
+ pinctrl-4 = <&P8_43_gpio_input_pin>;
+ pinctrl-5 = <&P8_43_pwm_pin>;
+ pinctrl-6 = <&P8_43_pruout_pin>;
+ pinctrl-7 = <&P8_43_pruin_pin>;
+ };
+
+ /* P8_44 (ZCZ ball R4) hdmi */
+ P8_44_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P8_44_default_pin>;
+ pinctrl-1 = <&P8_44_gpio_pin>;
+ pinctrl-2 = <&P8_44_gpio_pu_pin>;
+ pinctrl-3 = <&P8_44_gpio_pd_pin>;
+ pinctrl-4 = <&P8_44_gpio_input_pin>;
+ pinctrl-5 = <&P8_44_pwm_pin>;
+ pinctrl-6 = <&P8_44_pruout_pin>;
+ pinctrl-7 = <&P8_44_pruin_pin>;
+ };
+
+ /* P8_45 (ZCZ ball R1) hdmi */
+ P8_45_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P8_45_default_pin>;
+ pinctrl-1 = <&P8_45_gpio_pin>;
+ pinctrl-2 = <&P8_45_gpio_pu_pin>;
+ pinctrl-3 = <&P8_45_gpio_pd_pin>;
+ pinctrl-4 = <&P8_45_gpio_input_pin>;
+ pinctrl-5 = <&P8_45_pwm_pin>;
+ pinctrl-6 = <&P8_45_pruout_pin>;
+ pinctrl-7 = <&P8_45_pruin_pin>;
+ };
+
+ /* P8_46 (ZCZ ball R2) hdmi */
+ P8_46_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P8_46_default_pin>;
+ pinctrl-1 = <&P8_46_gpio_pin>;
+ pinctrl-2 = <&P8_46_gpio_pu_pin>;
+ pinctrl-3 = <&P8_46_gpio_pd_pin>;
+ pinctrl-4 = <&P8_46_gpio_input_pin>;
+ pinctrl-5 = <&P8_46_pwm_pin>;
+ pinctrl-6 = <&P8_46_pruout_pin>;
+ pinctrl-7 = <&P8_46_pruin_pin>;
+ };
+
+ /************************/
+ /* P9 Header */
+ /************************/
+
+ /* P9_01 GND */
+
+ /* P9_02 GND */
+
+ /* P9_03 3V3 */
+
+ /* P9_04 3V3 */
+
+ /* P9_05 VDD_5V */
+
+ /* P9_06 VDD_5V */
+
+ /* P9_07 SYS_5V */
+
+ /* P9_08 SYS_5V */
+
+ /* P9_09 PWR_BUT */
+
+ /* P9_10 RSTn */
+
+ /* P9_11 (ZCZ ball T17) */
+ P9_11_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart";
+ pinctrl-0 = <&P9_11_default_pin>;
+ pinctrl-1 = <&P9_11_gpio_pin>;
+ pinctrl-2 = <&P9_11_gpio_pu_pin>;
+ pinctrl-3 = <&P9_11_gpio_pd_pin>;
+ pinctrl-4 = <&P9_11_gpio_input_pin>;
+ pinctrl-5 = <&P9_11_uart_pin>;
+ };
+
+ /* P9_12 (ZCZ ball U18) */
+ P9_12_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P9_12_default_pin>;
+ pinctrl-1 = <&P9_12_gpio_pin>;
+ pinctrl-2 = <&P9_12_gpio_pu_pin>;
+ pinctrl-3 = <&P9_12_gpio_pd_pin>;
+ pinctrl-4 = <&P9_12_gpio_input_pin>;
+ };
+
+ /* P9_13 (ZCZ ball U17) */
+ P9_13_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart";
+ pinctrl-0 = <&P9_13_default_pin>;
+ pinctrl-1 = <&P9_13_gpio_pin>;
+ pinctrl-2 = <&P9_13_gpio_pu_pin>;
+ pinctrl-3 = <&P9_13_gpio_pd_pin>;
+ pinctrl-4 = <&P9_13_gpio_input_pin>;
+ pinctrl-5 = <&P9_13_uart_pin>;
+ };
+
+ /* P9_14 (ZCZ ball U14) */
+ P9_14_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P9_14_default_pin>;
+ pinctrl-1 = <&P9_14_gpio_pin>;
+ pinctrl-2 = <&P9_14_gpio_pu_pin>;
+ pinctrl-3 = <&P9_14_gpio_pd_pin>;
+ pinctrl-4 = <&P9_14_gpio_input_pin>;
+ pinctrl-5 = <&P9_14_pwm_pin>;
+ };
+
+ /* P9_15 (ZCZ ball R13) */
+ P9_15_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P9_15_default_pin>;
+ pinctrl-1 = <&P9_15_gpio_pin>;
+ pinctrl-2 = <&P9_15_gpio_pu_pin>;
+ pinctrl-3 = <&P9_15_gpio_pd_pin>;
+ pinctrl-4 = <&P9_15_gpio_input_pin>;
+ pinctrl-5 = <&P9_15_pwm_pin>;
+ };
+
+ /* P9_16 (ZCZ ball T14) */
+ P9_16_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P9_16_default_pin>;
+ pinctrl-1 = <&P9_16_gpio_pin>;
+ pinctrl-2 = <&P9_16_gpio_pu_pin>;
+ pinctrl-3 = <&P9_16_gpio_pd_pin>;
+ pinctrl-4 = <&P9_16_gpio_input_pin>;
+ pinctrl-5 = <&P9_16_pwm_pin>;
+ };
+
+ /* P9_17 (ZCZ ball A16) */
+ P9_17_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "i2c", "pwm", "pru_uart";
+ pinctrl-0 = <&P9_17_default_pin>;
+ pinctrl-1 = <&P9_17_gpio_pin>;
+ pinctrl-2 = <&P9_17_gpio_pu_pin>;
+ pinctrl-3 = <&P9_17_gpio_pd_pin>;
+ pinctrl-4 = <&P9_17_gpio_input_pin>;
+ pinctrl-5 = <&P9_17_spi_cs_pin>;
+ pinctrl-6 = <&P9_17_i2c_pin>;
+ pinctrl-7 = <&P9_17_pwm_pin>;
+ pinctrl-8 = <&P9_17_pru_uart_pin>;
+ };
+
+ /* P9_18 (ZCZ ball B16) */
+ P9_18_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "i2c", "pwm", "pru_uart";
+ pinctrl-0 = <&P9_18_default_pin>;
+ pinctrl-1 = <&P9_18_gpio_pin>;
+ pinctrl-2 = <&P9_18_gpio_pu_pin>;
+ pinctrl-3 = <&P9_18_gpio_pd_pin>;
+ pinctrl-4 = <&P9_18_gpio_input_pin>;
+ pinctrl-5 = <&P9_18_spi_pin>;
+ pinctrl-6 = <&P9_18_i2c_pin>;
+ pinctrl-7 = <&P9_18_pwm_pin>;
+ pinctrl-8 = <&P9_18_pru_uart_pin>;
+ };
+
+ /* P9_19 (ZCZ ball D17) i2c */
+ P9_19_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "can", "i2c", "pru_uart", "timer";
+ pinctrl-0 = <&P9_19_default_pin>;
+ pinctrl-1 = <&P9_19_gpio_pin>;
+ pinctrl-2 = <&P9_19_gpio_pu_pin>;
+ pinctrl-3 = <&P9_19_gpio_pd_pin>;
+ pinctrl-4 = <&P9_19_gpio_input_pin>;
+ pinctrl-5 = <&P9_19_spi_cs_pin>;
+ pinctrl-6 = <&P9_19_can_pin>;
+ pinctrl-7 = <&P9_19_i2c_pin>;
+ pinctrl-8 = <&P9_19_pru_uart_pin>;
+ pinctrl-9 = <&P9_19_timer_pin>;
+ };
+
+ /* P9_20 (ZCZ ball D18) i2c */
+ P9_20_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "can", "i2c", "pru_uart", "timer";
+ pinctrl-0 = <&P9_20_default_pin>;
+ pinctrl-1 = <&P9_20_gpio_pin>;
+ pinctrl-2 = <&P9_20_gpio_pu_pin>;
+ pinctrl-3 = <&P9_20_gpio_pd_pin>;
+ pinctrl-4 = <&P9_20_gpio_input_pin>;
+ pinctrl-5 = <&P9_20_spi_cs_pin>;
+ pinctrl-6 = <&P9_20_can_pin>;
+ pinctrl-7 = <&P9_20_i2c_pin>;
+ pinctrl-8 = <&P9_20_pru_uart_pin>;
+ pinctrl-9 = <&P9_20_timer_pin>;
+ };
+
+ /* P9_21 (ZCZ ball B17) */
+ P9_21_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "uart", "i2c", "pwm", "pru_uart";
+ pinctrl-0 = <&P9_21_default_pin>;
+ pinctrl-1 = <&P9_21_gpio_pin>;
+ pinctrl-2 = <&P9_21_gpio_pu_pin>;
+ pinctrl-3 = <&P9_21_gpio_pd_pin>;
+ pinctrl-4 = <&P9_21_gpio_input_pin>;
+ pinctrl-5 = <&P9_21_spi_pin>;
+ pinctrl-6 = <&P9_21_uart_pin>;
+ pinctrl-7 = <&P9_21_i2c_pin>;
+ pinctrl-8 = <&P9_21_pwm_pin>;
+ pinctrl-9 = <&P9_21_pru_uart_pin>;
+ };
+
+ /* P9_22 (ZCZ ball A17) */
+ P9_22_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_sclk", "uart", "i2c", "pwm", "pru_uart";
+ pinctrl-0 = <&P9_22_default_pin>;
+ pinctrl-1 = <&P9_22_gpio_pin>;
+ pinctrl-2 = <&P9_22_gpio_pu_pin>;
+ pinctrl-3 = <&P9_22_gpio_pd_pin>;
+ pinctrl-4 = <&P9_22_gpio_input_pin>;
+ pinctrl-5 = <&P9_22_spi_sclk_pin>;
+ pinctrl-6 = <&P9_22_uart_pin>;
+ pinctrl-7 = <&P9_22_i2c_pin>;
+ pinctrl-8 = <&P9_22_pwm_pin>;
+ pinctrl-9 = <&P9_22_pru_uart_pin>;
+ };
+
+ /* P9_23 (ZCZ ball V14) */
+ P9_23_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P9_23_default_pin>;
+ pinctrl-1 = <&P9_23_gpio_pin>;
+ pinctrl-2 = <&P9_23_gpio_pu_pin>;
+ pinctrl-3 = <&P9_23_gpio_pd_pin>;
+ pinctrl-4 = <&P9_23_gpio_input_pin>;
+ pinctrl-5 = <&P9_23_pwm_pin>;
+ };
+
+ /* P9_24 (ZCZ ball D15) */
+ P9_24_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "can", "i2c", "pru_uart", "pruin";
+ pinctrl-0 = <&P9_24_default_pin>;
+ pinctrl-1 = <&P9_24_gpio_pin>;
+ pinctrl-2 = <&P9_24_gpio_pu_pin>;
+ pinctrl-3 = <&P9_24_gpio_pd_pin>;
+ pinctrl-4 = <&P9_24_gpio_input_pin>;
+ pinctrl-5 = <&P9_24_uart_pin>;
+ pinctrl-6 = <&P9_24_can_pin>;
+ pinctrl-7 = <&P9_24_i2c_pin>;
+ pinctrl-8 = <&P9_24_pru_uart_pin>;
+ pinctrl-9 = <&P9_24_pruin_pin>;
+ };
+
+ /* P9_25 (ZCZ ball A14) audio */
+ P9_25_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P9_25_default_pin>;
+ pinctrl-1 = <&P9_25_gpio_pin>;
+ pinctrl-2 = <&P9_25_gpio_pu_pin>;
+ pinctrl-3 = <&P9_25_gpio_pd_pin>;
+ pinctrl-4 = <&P9_25_gpio_input_pin>;
+ pinctrl-5 = <&P9_25_qep_pin>;
+ pinctrl-6 = <&P9_25_pruout_pin>;
+ pinctrl-7 = <&P9_25_pruin_pin>;
+ };
+
+ /* P9_26 (ZCZ ball D16) */
+ P9_26_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "can", "i2c", "pru_uart", "pruin";
+ pinctrl-0 = <&P9_26_default_pin>;
+ pinctrl-1 = <&P9_26_gpio_pin>;
+ pinctrl-2 = <&P9_26_gpio_pu_pin>;
+ pinctrl-3 = <&P9_26_gpio_pd_pin>;
+ pinctrl-4 = <&P9_26_gpio_input_pin>;
+ pinctrl-5 = <&P9_26_uart_pin>;
+ pinctrl-6 = <&P9_26_can_pin>;
+ pinctrl-7 = <&P9_26_i2c_pin>;
+ pinctrl-8 = <&P9_26_pru_uart_pin>;
+ pinctrl-9 = <&P9_26_pruin_pin>;
+ };
+
+ /* P9_27 (ZCZ ball C13) */
+ P9_27_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P9_27_default_pin>;
+ pinctrl-1 = <&P9_27_gpio_pin>;
+ pinctrl-2 = <&P9_27_gpio_pu_pin>;
+ pinctrl-3 = <&P9_27_gpio_pd_pin>;
+ pinctrl-4 = <&P9_27_gpio_input_pin>;
+ pinctrl-5 = <&P9_27_qep_pin>;
+ pinctrl-6 = <&P9_27_pruout_pin>;
+ pinctrl-7 = <&P9_27_pruin_pin>;
+ };
+
+ /* P9_28 (ZCZ ball C12) audio */
+ P9_28_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "pwm", "pwm2", "pruout", "pruin";
+ pinctrl-0 = <&P9_28_default_pin>;
+ pinctrl-1 = <&P9_28_gpio_pin>;
+ pinctrl-2 = <&P9_28_gpio_pu_pin>;
+ pinctrl-3 = <&P9_28_gpio_pd_pin>;
+ pinctrl-4 = <&P9_28_gpio_input_pin>;
+ pinctrl-5 = <&P9_28_spi_cs_pin>;
+ pinctrl-6 = <&P9_28_pwm_pin>;
+ pinctrl-7 = <&P9_28_pwm2_pin>;
+ pinctrl-8 = <&P9_28_pruout_pin>;
+ pinctrl-9 = <&P9_28_pruin_pin>;
+ };
+
+ /* P9_29 (ZCZ ball B13) audio */
+ P9_29_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P9_29_default_pin>;
+ pinctrl-1 = <&P9_29_gpio_pin>;
+ pinctrl-2 = <&P9_29_gpio_pu_pin>;
+ pinctrl-3 = <&P9_29_gpio_pd_pin>;
+ pinctrl-4 = <&P9_29_gpio_input_pin>;
+ pinctrl-5 = <&P9_29_spi_pin>;
+ pinctrl-6 = <&P9_29_pwm_pin>;
+ pinctrl-7 = <&P9_29_pruout_pin>;
+ pinctrl-8 = <&P9_29_pruin_pin>;
+ };
+
+ /* P9_30 (ZCZ ball D12) gpio-hog wl1835 */
+
+ /* P9_31 (ZCZ ball A13) audio */
+ P9_31_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_sclk", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P9_31_default_pin>;
+ pinctrl-1 = <&P9_31_gpio_pin>;
+ pinctrl-2 = <&P9_31_gpio_pu_pin>;
+ pinctrl-3 = <&P9_31_gpio_pd_pin>;
+ pinctrl-4 = <&P9_31_gpio_input_pin>;
+ pinctrl-5 = <&P9_31_spi_sclk_pin>;
+ pinctrl-6 = <&P9_31_pwm_pin>;
+ pinctrl-7 = <&P9_31_pruout_pin>;
+ pinctrl-8 = <&P9_31_pruin_pin>;
+ };
+
+ /* P9_32 VADC */
+
+ /* P9_33 (ZCZ ball C8) AIN4 */
+
+ /* P9_34 AGND */
+
+ /* P9_35 (ZCZ ball A8) AIN6 */
+
+ /* P9_36 (ZCZ ball B8) AIN5 */
+
+ /* P9_37 (ZCZ ball B7) AIN2 */
+
+ /* P9_38 (ZCZ ball A7) AIN3 */
+
+ /* P9_39 (ZCZ ball B6) AIN0 */
+
+ /* P9_40 (ZCZ ball C7) AIN1 */
+
+ /* P9_41 (ZCZ ball D14) */
+ P9_41_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer", "pruin";
+ pinctrl-0 = <&P9_41_default_pin>;
+ pinctrl-1 = <&P9_41_gpio_pin>;
+ pinctrl-2 = <&P9_41_gpio_pu_pin>;
+ pinctrl-3 = <&P9_41_gpio_pd_pin>;
+ pinctrl-4 = <&P9_41_gpio_input_pin>;
+ pinctrl-5 = <&P9_41_timer_pin>;
+ pinctrl-6 = <&P9_41_pruin_pin>;
+ };
+
+ /* P9_41.1 */
+ /* P9_91 (ZCZ ball D13) */
+ P9_91_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P9_91_default_pin>;
+ pinctrl-1 = <&P9_91_gpio_pin>;
+ pinctrl-2 = <&P9_91_gpio_pu_pin>;
+ pinctrl-3 = <&P9_91_gpio_pd_pin>;
+ pinctrl-4 = <&P9_91_gpio_input_pin>;
+ pinctrl-5 = <&P9_91_qep_pin>;
+ pinctrl-6 = <&P9_91_pruout_pin>;
+ pinctrl-7 = <&P9_91_pruin_pin>;
+ };
+
+ /* P9_42 (ZCZ ball C18) */
+ P9_42_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "spi_sclk", "uart", "pwm", "pru_ecap";
+ pinctrl-0 = <&P9_42_default_pin>;
+ pinctrl-1 = <&P9_42_gpio_pin>;
+ pinctrl-2 = <&P9_42_gpio_pu_pin>;
+ pinctrl-3 = <&P9_42_gpio_pd_pin>;
+ pinctrl-4 = <&P9_42_gpio_input_pin>;
+ pinctrl-5 = <&P9_42_spi_cs_pin>;
+ pinctrl-6 = <&P9_42_spi_sclk_pin>;
+ pinctrl-7 = <&P9_42_uart_pin>;
+ pinctrl-8 = <&P9_42_pwm_pin>;
+ pinctrl-9 = <&P9_42_pru_ecap_pin>;
+ };
+
+ /* P9_42.1 */
+ /* P9_92 (ZCZ ball B12) */
+ P9_92_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P9_92_default_pin>;
+ pinctrl-1 = <&P9_92_gpio_pin>;
+ pinctrl-2 = <&P9_92_gpio_pu_pin>;
+ pinctrl-3 = <&P9_92_gpio_pd_pin>;
+ pinctrl-4 = <&P9_92_gpio_input_pin>;
+ pinctrl-5 = <&P9_92_qep_pin>;
+ pinctrl-6 = <&P9_92_pruout_pin>;
+ pinctrl-7 = <&P9_92_pruin_pin>;
+ };
+
+ /* P9_43 GND */
+
+ /* P9_44 GND */
+
+ /* P9_45 GND */
+
+ /* P9_46 GND */
+
+
+ cape-universal {
+ compatible = "gpio-of-helper";
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ P8_03 {
+ gpio-name = "P8_03";
+ gpio = <&gpio1 6 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_04 {
+ gpio-name = "P8_04";
+ gpio = <&gpio1 7 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_05 {
+ gpio-name = "P8_05";
+ gpio = <&gpio1 2 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_06 {
+ gpio-name = "P8_06";
+ gpio = <&gpio1 3 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_07 {
+ gpio-name = "P8_07";
+ gpio = <&gpio2 2 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_08 {
+ gpio-name = "P8_08";
+ gpio = <&gpio2 3 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_09 {
+ gpio-name = "P8_09";
+ gpio = <&gpio2 5 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_10 {
+ gpio-name = "P8_10";
+ gpio = <&gpio2 4 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_11 {
+ gpio-name = "P8_11";
+ gpio = <&gpio1 13 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_12 {
+ gpio-name = "P8_12";
+ gpio = <&gpio1 12 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_13 {
+ gpio-name = "P8_13";
+ gpio = <&gpio0 23 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_15 {
+ gpio-name = "P8_15";
+ gpio = <&gpio1 15 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_16 {
+ gpio-name = "P8_16";
+ gpio = <&gpio1 14 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_18 {
+ gpio-name = "P8_18";
+ gpio = <&gpio2 1 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_19 {
+ gpio-name = "P8_19";
+ gpio = <&gpio0 22 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_20 {
+ gpio-name = "P8_20";
+ gpio = <&gpio1 31 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_21 {
+ gpio-name = "P8_21";
+ gpio = <&gpio1 30 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_22 {
+ gpio-name = "P8_22";
+ gpio = <&gpio1 5 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_23 {
+ gpio-name = "P8_23";
+ gpio = <&gpio1 4 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_24 {
+ gpio-name = "P8_24";
+ gpio = <&gpio1 1 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_25 {
+ gpio-name = "P8_25";
+ gpio = <&gpio1 0 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_27 {
+ gpio-name = "P8_27";
+ gpio = <&gpio2 22 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_28 {
+ gpio-name = "P8_28";
+ gpio = <&gpio2 24 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_29 {
+ gpio-name = "P8_29";
+ gpio = <&gpio2 23 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_30 {
+ gpio-name = "P8_30";
+ gpio = <&gpio2 25 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_31 {
+ gpio-name = "P8_31";
+ gpio = <&gpio0 10 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_32 {
+ gpio-name = "P8_32";
+ gpio = <&gpio0 11 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_33 {
+ gpio-name = "P8_33";
+ gpio = <&gpio0 9 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_34 {
+ gpio-name = "P8_34";
+ gpio = <&gpio2 17 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_35 {
+ gpio-name = "P8_35";
+ gpio = <&gpio0 8 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_36 {
+ gpio-name = "P8_36";
+ gpio = <&gpio2 16 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_37 {
+ gpio-name = "P8_37";
+ gpio = <&gpio2 14 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_38 {
+ gpio-name = "P8_38";
+ gpio = <&gpio2 15 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_39 {
+ gpio-name = "P8_39";
+ gpio = <&gpio2 12 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_40 {
+ gpio-name = "P8_40";
+ gpio = <&gpio2 13 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_41 {
+ gpio-name = "P8_41";
+ gpio = <&gpio2 10 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_42 {
+ gpio-name = "P8_42";
+ gpio = <&gpio2 11 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_43 {
+ gpio-name = "P8_43";
+ gpio = <&gpio2 8 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_44 {
+ gpio-name = "P8_44";
+ gpio = <&gpio2 9 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_45 {
+ gpio-name = "P8_45";
+ gpio = <&gpio2 6 0>;
+ input;
+ dir-changeable;
+ };
+
+ P8_46 {
+ gpio-name = "P8_46";
+ gpio = <&gpio2 7 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_11 {
+ gpio-name = "P9_11";
+ gpio = <&gpio0 30 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_12 {
+ gpio-name = "P9_12";
+ gpio = <&gpio1 28 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_13 {
+ gpio-name = "P9_13";
+ gpio = <&gpio0 31 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_14 {
+ gpio-name = "P9_14";
+ gpio = <&gpio1 18 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_15 {
+ gpio-name = "P9_15";
+ gpio = <&gpio1 16 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_16 {
+ gpio-name = "P9_16";
+ gpio = <&gpio1 19 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_17 {
+ gpio-name = "P9_17";
+ gpio = <&gpio0 5 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_18 {
+ gpio-name = "P9_18";
+ gpio = <&gpio0 4 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_19 {
+ gpio-name = "P9_19";
+ gpio = <&gpio0 13 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_20 {
+ gpio-name = "P9_20";
+ gpio = <&gpio0 12 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_21 {
+ gpio-name = "P9_21";
+ gpio = <&gpio0 3 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_22 {
+ gpio-name = "P9_22";
+ gpio = <&gpio0 2 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_23 {
+ gpio-name = "P9_23";
+ gpio = <&gpio1 17 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_24 {
+ gpio-name = "P9_24";
+ gpio = <&gpio0 15 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_25 {
+ gpio-name = "P9_25";
+ gpio = <&gpio3 21 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_26 {
+ gpio-name = "P9_26";
+ gpio = <&gpio0 14 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_27 {
+ gpio-name = "P9_27";
+ gpio = <&gpio3 19 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_28 {
+ gpio-name = "P9_28";
+ gpio = <&gpio3 17 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_29 {
+ gpio-name = "P9_29";
+ gpio = <&gpio3 15 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_31 {
+ gpio-name = "P9_31";
+ gpio = <&gpio3 14 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_41 {
+ gpio-name = "P9_41";
+ gpio = <&gpio0 20 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_91 {
+ gpio-name = "P9_91";
+ gpio = <&gpio3 20 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_42 {
+ gpio-name = "P9_42";
+ gpio = <&gpio0 7 0>;
+ input;
+ dir-changeable;
+ };
+
+ P9_92 {
+ gpio-name = "P9_92";
+ gpio = <&gpio3 18 0>;
+ input;
+ dir-changeable;
+ };
+
+ };
+};
diff --git a/arch/arm/boot/dts/am335x-bonegreen-wireless-uboot-univ.dts b/arch/arm/boot/dts/am335x-bonegreen-wireless-uboot-univ.dts
new file mode 100644
index 0000000000..ac63c249b1
--- /dev/null
+++ b/arch/arm/boot/dts/am335x-bonegreen-wireless-uboot-univ.dts
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
+ */
+/dts-v1/;
+
+#include "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+#include "am335x-bonegreen-wireless-common-univ.dtsi"
+
+/ {
+ model = "TI AM335x BeagleBone Green Wireless";
+ compatible = "ti,am335x-bone-green-wireless", "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+ chosen {
+ base_dtb = "am335x-bonegreen-wireless-uboot-univ.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
+};
+
+&ldo3_reg {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+};
+
+&mmc1 {
+ vmmc-supply = <&vmmcsd_fixed>;
+};
+
+&gpio1 {
+ ls_buf_en {
+ gpio-hog;
+ gpios = <29 GPIO_ACTIVE_HIGH>;
+ output-high;
+ line-name = "LS_BUF_EN";
+ };
+};
+
+/* BT_AUD_OUT from wl1835 has to be pulled low when WL_EN is activated.*/
+/* in case it isn't, wilink8 ends up in one of the test modes that */
+/* intruces various issues (elp wkaeup timeouts etc.) */
+/* On the BBGW this pin is routed through the level shifter (U21) that */
+/* introduces a pullup on the line and wilink8 ends up in a bad state. */
+/* use a gpio hog to force this pin low. An alternative may be adding */
+/* an external pulldown on U21 pin 4. */
+
+&gpio3 {
+ bt_aud_in {
+ gpio-hog;
+ gpios = <16 GPIO_ACTIVE_HIGH>;
+ output-low;
+ line-name = "MCASP0_AHCLKR";
+ };
+};
diff --git a/arch/arm/boot/dts/am335x-bonegreen-wireless.dts b/arch/arm/boot/dts/am335x-bonegreen-wireless.dts
index 4092cd193b..a0a841d971 100644
--- a/arch/arm/boot/dts/am335x-bonegreen-wireless.dts
+++ b/arch/arm/boot/dts/am335x-bonegreen-wireless.dts
@@ -8,11 +8,17 @@
#include "am335x-bone-common.dtsi"
#include "am335x-bonegreen-common.dtsi"
#include <dt-bindings/interrupt-controller/irq.h>
+/* #include "am335x-bone-jtag.dtsi" */
/ {
model = "TI AM335x BeagleBone Green Wireless";
compatible = "ti,am335x-bone-green-wireless", "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+ chosen {
+ base_dtb = "am335x-bonegreen-wireless.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
+
wlan_en_reg: fixedregulator@2 {
compatible = "regulator-fixed";
regulator-name = "wlan-en-regulator";
diff --git a/arch/arm/boot/dts/am335x-bonegreen.dts b/arch/arm/boot/dts/am335x-bonegreen.dts
index c12bb07177..d3009aeeb6 100644
--- a/arch/arm/boot/dts/am335x-bonegreen.dts
+++ b/arch/arm/boot/dts/am335x-bonegreen.dts
@@ -7,8 +7,14 @@
#include "am33xx.dtsi"
#include "am335x-bone-common.dtsi"
#include "am335x-bonegreen-common.dtsi"
+/* #include "am335x-bone-jtag.dtsi" */
/ {
model = "TI AM335x BeagleBone Green";
compatible = "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+ chosen {
+ base_dtb = "am335x-bonegreen.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
};
diff --git a/arch/arm/boot/dts/am335x-osd3358-sm-red.dts b/arch/arm/boot/dts/am335x-osd3358-sm-red.dts
index f47cc9fea2..bdb7838792 100644
--- a/arch/arm/boot/dts/am335x-osd3358-sm-red.dts
+++ b/arch/arm/boot/dts/am335x-osd3358-sm-red.dts
@@ -13,10 +13,16 @@
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/display/tda998x.h>
+/* #include "am335x-bone-jtag.dtsi" */
/ {
model = "Octavo Systems OSD3358-SM-RED";
compatible = "oct,osd3358-sm-refdesign", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+ chosen {
+ base_dtb = "am335x-osd3358-sm-red.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
};
&ldo3_reg {
@@ -40,7 +46,6 @@
&am33xx_pinmux {
nxp_hdmi_bonelt_pins: nxp-hdmi-bonelt-pins {
pinctrl-single,pins = <
- AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR0, PIN_OUTPUT_PULLDOWN, MUX_MODE3)
AM33XX_PADCONF(AM335X_PIN_LCD_DATA0, PIN_OUTPUT, MUX_MODE0)
AM33XX_PADCONF(AM335X_PIN_LCD_DATA1, PIN_OUTPUT, MUX_MODE0)
AM33XX_PADCONF(AM335X_PIN_LCD_DATA2, PIN_OUTPUT, MUX_MODE0)
@@ -64,12 +69,6 @@
>;
};
- nxp_hdmi_bonelt_off_pins: nxp-hdmi-bonelt-off-pins {
- pinctrl-single,pins = <
- AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR0, PIN_OUTPUT_PULLDOWN, MUX_MODE3)
- >;
- };
-
mcasp0_pins: mcasp0-pins {
pinctrl-single,pins = <
AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKX, PIN_INPUT_PULLUP, MUX_MODE0)
@@ -124,9 +123,8 @@
compatible = "nxp,tda998x";
reg = <0x70>;
- pinctrl-names = "default", "off";
+ pinctrl-names = "default";
pinctrl-0 = <&nxp_hdmi_bonelt_pins>;
- pinctrl-1 = <&nxp_hdmi_bonelt_off_pins>;
/* Convert 24bit BGR to RGB, e.g. cross red and blue wiring */
/* video-ports = <0x234501>; */
@@ -264,9 +262,6 @@
};
&am33xx_pinmux {
- pinctrl-names = "default";
- pinctrl-0 = <&clkout2_pin>;
-
user_leds_s0: user-leds-s0 {
pinctrl-single,pins = <
AM33XX_PADCONF(AM335X_PIN_GPMC_A5, PIN_OUTPUT_PULLDOWN, MUX_MODE7) /* gpmc_a5.gpio1_21 */
@@ -290,12 +285,6 @@
>;
};
- clkout2_pin: pinmux-clkout2-pin {
- pinctrl-single,pins = <
- AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR1, PIN_OUTPUT_PULLDOWN, MUX_MODE3) /* xdma_event_intr1.clkout2 */
- >;
- };
-
cpsw_default: cpsw-default {
pinctrl-single,pins = <
/* Slave 1 */
diff --git a/arch/arm/boot/dts/am335x-pocketbeagle.dts b/arch/arm/boot/dts/am335x-pocketbeagle.dts
index ff4f919d22..d2533a8878 100644
--- a/arch/arm/boot/dts/am335x-pocketbeagle.dts
+++ b/arch/arm/boot/dts/am335x-pocketbeagle.dts
@@ -15,6 +15,8 @@
chosen {
stdout-path = &uart0;
+ base_dtb = "am335x-pocketbeagle.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
};
leds {
@@ -60,24 +62,24 @@
};
&am33xx_pinmux {
- i2c2_pins: pinmux-i2c2-pins {
- pinctrl-single,pins = <
- AM33XX_PADCONF(AM335X_PIN_UART1_RTSN, PIN_INPUT_PULLUP, MUX_MODE3) /* (D17) uart1_rtsn.I2C2_SCL */
- AM33XX_PADCONF(AM335X_PIN_UART1_CTSN, PIN_INPUT_PULLUP, MUX_MODE3) /* (D18) uart1_ctsn.I2C2_SDA */
- >;
- };
+// i2c2_pins: pinmux-i2c2-pins {
+// pinctrl-single,pins = <
+// AM33XX_PADCONF(AM335X_PIN_UART1_RTSN, PIN_INPUT_PULLUP, MUX_MODE3) /* (D17) uart1_rtsn.I2C2_SCL */
+// AM33XX_PADCONF(AM335X_PIN_UART1_CTSN, PIN_INPUT_PULLUP, MUX_MODE3) /* (D18) uart1_ctsn.I2C2_SDA */
+// >;
+// };
- ehrpwm0_pins: pinmux-ehrpwm0-pins {
- pinctrl-single,pins = <
- AM33XX_PADCONF(AM335X_PIN_MCASP0_ACLKX, PIN_OUTPUT_PULLDOWN, MUX_MODE1) /* (A13) mcasp0_aclkx.ehrpwm0A */
- >;
- };
+// ehrpwm0_pins: pinmux-ehrpwm0-pins {
+// pinctrl-single,pins = <
+// AM33XX_PADCONF(AM335X_PIN_MCASP0_ACLKX, PIN_OUTPUT_PULLDOWN, MUX_MODE1) /* (A13) mcasp0_aclkx.ehrpwm0A */
+// >;
+// };
- ehrpwm1_pins: pinmux-ehrpwm1-pins {
- pinctrl-single,pins = <
- AM33XX_PADCONF(AM335X_PIN_GPMC_A2, PIN_OUTPUT_PULLDOWN, MUX_MODE6) /* (U14) gpmc_a2.ehrpwm1A */
- >;
- };
+// ehrpwm1_pins: pinmux-ehrpwm1-pins {
+// pinctrl-single,pins = <
+// AM33XX_PADCONF(AM335X_PIN_GPMC_A2, PIN_OUTPUT_PULLDOWN, MUX_MODE6) /* (U14) gpmc_a2.ehrpwm1A */
+// >;
+// };
mmc0_pins: pinmux-mmc0-pins {
pinctrl-single,pins = <
@@ -88,27 +90,26 @@
AM33XX_PADCONF(AM335X_PIN_MMC0_DAT3, PIN_INPUT_PULLUP, MUX_MODE0)
AM33XX_PADCONF(AM335X_PIN_MMC0_CMD, PIN_INPUT_PULLUP, MUX_MODE0)
AM33XX_PADCONF(AM335X_PIN_MMC0_CLK, PIN_INPUT_PULLUP, MUX_MODE0)
- AM33XX_PADCONF(AM335X_PIN_MCASP0_ACLKR, PIN_INPUT, MUX_MODE4) /* (B12) mcasp0_aclkr.mmc0_sdwp */
>;
};
- spi0_pins: pinmux-spi0-pins {
- pinctrl-single,pins = <
- AM33XX_PADCONF(AM335X_PIN_SPI0_SCLK, PIN_INPUT_PULLUP, MUX_MODE0)
- AM33XX_PADCONF(AM335X_PIN_SPI0_D0, PIN_INPUT_PULLUP, MUX_MODE0)
- AM33XX_PADCONF(AM335X_PIN_SPI0_D1, PIN_INPUT_PULLUP, MUX_MODE0)
- AM33XX_PADCONF(AM335X_PIN_SPI0_CS0, PIN_INPUT_PULLUP, MUX_MODE0)
- >;
- };
+// spi0_pins: pinmux-spi0-pins {
+// pinctrl-single,pins = <
+// AM33XX_PADCONF(AM335X_PIN_SPI0_SCLK, PIN_INPUT_PULLUP, MUX_MODE0) /* (A17) spi0_sclk.spi0_sclk */
+// AM33XX_PADCONF(AM335X_PIN_SPI0_D0, PIN_INPUT_PULLUP, MUX_MODE0) /* (B17) spi0_d0.spi0_d0 */
+// AM33XX_PADCONF(AM335X_PIN_SPI0_D1, PIN_INPUT_PULLUP, MUX_MODE0) /* (B16) spi0_d1.spi0_d1 */
+// AM33XX_PADCONF(AM335X_PIN_SPI0_CS0, PIN_INPUT_PULLUP, MUX_MODE0) /* (A16) spi0_cs0.spi0_cs0 */
+// >;
+// };
- spi1_pins: pinmux-spi1-pins {
- pinctrl-single,pins = <
- AM33XX_PADCONF(AM335X_PIN_ECAP0_IN_PWM0_OUT, PIN_INPUT_PULLUP, MUX_MODE4) /* (C18) eCAP0_in_PWM0_out.spi1_sclk */
- AM33XX_PADCONF(AM335X_PIN_UART0_CTSN, PIN_INPUT_PULLUP, MUX_MODE4) /* (E18) uart0_ctsn.spi1_d0 */
- AM33XX_PADCONF(AM335X_PIN_UART0_RTSN, PIN_INPUT_PULLUP, MUX_MODE4) /* (E17) uart0_rtsn.spi1_d1 */
- AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR0, PIN_INPUT_PULLUP, MUX_MODE4) /* (A15) xdma_event_intr0.spi1_cs1 */
- >;
- };
+// spi1_pins: pinmux-spi1-pins {
+// pinctrl-single,pins = <
+// AM33XX_PADCONF(AM335X_PIN_ECAP0_IN_PWM0_OUT, PIN_INPUT_PULLUP, MUX_MODE4) /* (C18) eCAP0_in_PWM0_out.spi1_sclk */
+// AM33XX_PADCONF(AM335X_PIN_UART0_CTSN, PIN_INPUT_PULLUP, MUX_MODE4) /* (E18) uart0_ctsn.spi1_d0 */
+// AM33XX_PADCONF(AM335X_PIN_UART0_RTSN, PIN_INPUT_PULLUP, MUX_MODE4) /* (E17) uart0_rtsn.spi1_d1 */
+// AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR0, PIN_INPUT_PULLUP, MUX_MODE4) /* (A15) xdma_event_intr0.spi1_cs1 */
+// >;
+// };
usr_leds_pins: pinmux-usr-leds-pins {
pinctrl-single,pins = <
@@ -126,12 +127,839 @@
>;
};
- uart4_pins: pinmux-uart4-pins {
- pinctrl-single,pins = <
- AM33XX_PADCONF(AM335X_PIN_GPMC_WAIT0, PIN_INPUT_PULLUP, MUX_MODE6) /* (T17) gpmc_wait0.uart4_rxd */
- AM33XX_PADCONF(AM335X_PIN_GPMC_WPN, PIN_OUTPUT_PULLDOWN, MUX_MODE6) /* (U17) gpmc_wpn.uart4_txd */
- >;
- };
+// uart4_pins: pinmux-uart4-pins {
+// pinctrl-single,pins = <
+// AM33XX_PADCONF(AM335X_PIN_GPMC_WAIT0, PIN_INPUT_PULLUP, MUX_MODE6) /* (T17) gpmc_wait0.uart4_rxd */
+// AM33XX_PADCONF(AM335X_PIN_GPMC_WPN, PIN_OUTPUT_PULLDOWN, MUX_MODE6) /* (U17) gpmc_wpn.uart4_txd */
+// >;
+// };
+
+ /************************/
+ /* P1 Header */
+ /************************/
+
+ /* P1_01 VIN-AC */
+
+ /* P1_02 (ZCZ ball R5) gpio2_23 */
+ P1_02_default_pin: pinmux_P1_02_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_INPUT | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P1_02_gpio_pin: pinmux_P1_02_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P1_02_gpio_pu_pin: pinmux_P1_02_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P1_02_gpio_pd_pin: pinmux_P1_02_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P1_02_gpio_input_pin: pinmux_P1_02_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_INPUT | MUX_MODE7) >; }; /* lcd_hsync.gpio2_23 */
+ P1_02_pruout_pin: pinmux_P1_02_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_hsync.pru1_out9 */
+ P1_02_pruin_pin: pinmux_P1_02_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e4, PIN_INPUT | MUX_MODE6) >; }; /* lcd_hsync.pru1_in9 */
+
+ /* P1_03 (ZCZ ball F15) usb1_vbus_out */
+
+ /* P1_04 (ZCZ ball R6) gpio2_25 */
+ P1_04_default_pin: pinmux_P1_04_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P1_04_gpio_pin: pinmux_P1_04_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P1_04_gpio_pu_pin: pinmux_P1_04_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P1_04_gpio_pd_pin: pinmux_P1_04_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P1_04_gpio_input_pin: pinmux_P1_04_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_INPUT | MUX_MODE7) >; }; /* lcd_ac_bias_en.gpio2_25 */
+ P1_04_pruout_pin: pinmux_P1_04_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_ac_bias_en.pru1_out11 */
+ P1_04_pruin_pin: pinmux_P1_04_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08ec, PIN_INPUT | MUX_MODE6) >; }; /* lcd_ac_bias_en.pru1_in11 */
+
+ /* P1_05 (ZCZ ball T18) usb1_vbus_in */
+
+ /* P1_06 (ZCZ ball A16) spi0_cs0 */
+ P1_06_default_pin: pinmux_P1_06_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_cs0.spi0_cs0 */
+ P1_06_gpio_pin: pinmux_P1_06_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* spi0_cs0.gpio0_5 */
+ P1_06_gpio_pu_pin: pinmux_P1_06_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_cs0.gpio0_5 */
+ P1_06_gpio_pd_pin: pinmux_P1_06_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* spi0_cs0.gpio0_5 */
+ P1_06_gpio_input_pin: pinmux_P1_06_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_INPUT | MUX_MODE7) >; }; /* spi0_cs0.gpio0_5 */
+ P1_06_spi_cs_pin: pinmux_P1_06_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_cs0.spi0_cs0 */
+ P1_06_i2c_pin: pinmux_P1_06_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* spi0_cs0.i2c1_scl */
+ P1_06_pwm_pin: pinmux_P1_06_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* spi0_cs0.ehrpwm0_synci */
+ P1_06_pru_uart_pin: pinmux_P1_06_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* spi0_cs0.pr1_uart0_txd */
+
+ /* P1_07 VIN-USB */
+
+ /* P1_08 (ZCZ ball A17) spi0_sclk */
+ P1_08_default_pin: pinmux_P1_08_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_sclk.spi0_sclk */
+ P1_08_gpio_pin: pinmux_P1_08_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* spi0_sclk.gpio0_2 */
+ P1_08_gpio_pu_pin: pinmux_P1_08_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_sclk.gpio0_2 */
+ P1_08_gpio_pd_pin: pinmux_P1_08_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* spi0_sclk.gpio0_2 */
+ P1_08_gpio_input_pin: pinmux_P1_08_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_INPUT | MUX_MODE7) >; }; /* spi0_sclk.gpio0_2 */
+ P1_08_spi_sclk_pin: pinmux_P1_08_spi_sclk_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_sclk.spi0_sclk */
+ P1_08_uart_pin: pinmux_P1_08_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* spi0_sclk.uart2_rxd */
+ P1_08_i2c_pin: pinmux_P1_08_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* spi0_sclk.i2c2_sda */
+ P1_08_pwm_pin: pinmux_P1_08_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* spi0_sclk.ehrpwm0a */
+ P1_08_pru_uart_pin: pinmux_P1_08_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* spi0_sclk.pr1_uart0_cts_n */
+
+ /* P1_09 (ZCZ ball R18) USB1-DN */
+
+ /* P1_10 (ZCZ ball B17) spi0_d0 */
+ P1_10_default_pin: pinmux_P1_10_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_d0.spi0_d0 */
+ P1_10_gpio_pin: pinmux_P1_10_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* spi0_d0.gpio0_3 */
+ P1_10_gpio_pu_pin: pinmux_P1_10_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_d0.gpio0_3 */
+ P1_10_gpio_pd_pin: pinmux_P1_10_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* spi0_d0.gpio0_3 */
+ P1_10_gpio_input_pin: pinmux_P1_10_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_INPUT | MUX_MODE7) >; }; /* spi0_d0.gpio0_3 */
+ P1_10_spi_pin: pinmux_P1_10_spi_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_d0.spi0_d0 */
+ P1_10_uart_pin: pinmux_P1_10_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* spi0_d0.uart2_txd */
+ P1_10_i2c_pin: pinmux_P1_10_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* spi0_d0.i2c2_scl */
+ P1_10_pwm_pin: pinmux_P1_10_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* spi0_d0.ehrpwm0b */
+ P1_10_pru_uart_pin: pinmux_P1_10_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* spi0_d0.pr1_uart0_rts_n */
+
+ /* P1_11 (ZCZ ball R17) USB1-DP */
+
+ /* P1_12 (ZCZ ball B16) spi0_d1 */
+ P1_12_default_pin: pinmux_P1_12_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_d1.spi0_d1 */
+ P1_12_gpio_pin: pinmux_P1_12_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* spi0_d1.gpio0_4 */
+ P1_12_gpio_pu_pin: pinmux_P1_12_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* spi0_d1.gpio0_4 */
+ P1_12_gpio_pd_pin: pinmux_P1_12_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* spi0_d1.gpio0_4 */
+ P1_12_gpio_input_pin: pinmux_P1_12_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_INPUT | MUX_MODE7) >; }; /* spi0_d1.gpio0_4 */
+ P1_12_spi_pin: pinmux_P1_12_spi_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* spi0_d1.spi0_d1 */
+ P1_12_i2c_pin: pinmux_P1_12_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* spi0_d1.i2c1_sda */
+ P1_12_pwm_pin: pinmux_P1_12_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* spi0_d1.ehrpwm0_tripzone_input */
+ P1_12_pru_uart_pin: pinmux_P1_12_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* spi0_d1.pr1_uart0_rxd */
+
+ /* P1_13 (ZCZ ball P17) USB1-ID */
+
+ /* P1_14 VOUT-3.3V */
+
+ /* P1_15 GND */
+
+ /* P1_16 GND */
+
+ /* P1_17 (ZCZ ball A9) VREFN */
+
+ /* P1_18 (ZCZ ball B9) VREFP */
+
+ /* P1_19 (ZCZ ball B6) AIN0 */
+
+ /* P1_20 (ZCZ ball D14) gpio0_20 */
+ P1_20_default_pin: pinmux_P1_20_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P1_20_gpio_pin: pinmux_P1_20_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P1_20_gpio_pu_pin: pinmux_P1_20_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P1_20_gpio_pd_pin: pinmux_P1_20_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P1_20_gpio_input_pin: pinmux_P1_20_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_INPUT | MUX_MODE7) >; }; /* xdma_event_intr1.gpio0_20 */
+ P1_20_pruin_pin: pinmux_P1_20_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b4, PIN_INPUT | MUX_MODE5) >; }; /* xdma_event_intr1.pru0_in16 */
+
+ /* P1_21 (ZCZ ball C7) AIN1 */
+
+ /* P1_22 GND */
+
+ /* P1_23 (ZCZ ball B7) AIN2 */
+
+ /* P1_24 VOUT-5V */
+
+ /* P1_25 (ZCZ ball A7) AIN3 */
+
+ /* P1_26 (ZCZ ball D18) i2c2_sda */
+ P1_26_default_pin: pinmux_P1_26_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_ctsn.i2c2_sda */
+ P1_26_gpio_pin: pinmux_P1_26_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart1_ctsn.gpio0_12 */
+ P1_26_gpio_pu_pin: pinmux_P1_26_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_ctsn.gpio0_12 */
+ P1_26_gpio_pd_pin: pinmux_P1_26_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart1_ctsn.gpio0_12 */
+ P1_26_gpio_input_pin: pinmux_P1_26_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_INPUT | MUX_MODE7) >; }; /* uart1_ctsn.gpio0_12 */
+ P1_26_can_pin: pinmux_P1_26_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | MUX_MODE2) >; }; /* uart1_ctsn.dcan0_tx */
+ P1_26_i2c_pin: pinmux_P1_26_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_ctsn.i2c2_sda */
+ P1_26_spi_cs_pin: pinmux_P1_26_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* uart1_ctsn.spi1_cs0 */
+ P1_26_pru_uart_pin: pinmux_P1_26_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; }; /* uart1_ctsn.pr1_uart0_cts_n */
+
+ /* P1_27 (ZCZ ball C8) AIN4 */
+
+ /* P1_28 (ZCZ ball D17) i2c2_scl */
+ P1_28_default_pin: pinmux_P1_28_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_rtsn.i2c2_scl */
+ P1_28_gpio_pin: pinmux_P1_28_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart1_rtsn.gpio0_13 */
+ P1_28_gpio_pu_pin: pinmux_P1_28_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_rtsn.gpio0_13 */
+ P1_28_gpio_pd_pin: pinmux_P1_28_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart1_rtsn.gpio0_13 */
+ P1_28_gpio_input_pin: pinmux_P1_28_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_INPUT | MUX_MODE7) >; }; /* uart1_rtsn.gpio0_13 */
+ P1_28_can_pin: pinmux_P1_28_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_INPUT_PULLUP | MUX_MODE2) >; }; /* uart1_rtsn.dcan0_rx */
+ P1_28_i2c_pin: pinmux_P1_28_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_rtsn.i2c2_scl */
+ P1_28_spi_cs_pin: pinmux_P1_28_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* uart1_rtsn.spi1_cs1 */
+ P1_28_pru_uart_pin: pinmux_P1_28_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; }; /* uart1_rtsn.pr1_uart0_rts_n */
+
+ /* P1_29 (ZCZ ball A14) pru0_in7 */
+ P1_29_default_pin: pinmux_P1_29_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_ahclkx.pru0_in7 */
+ P1_29_gpio_pin: pinmux_P1_29_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkx.gpio3_21 */
+ P1_29_gpio_pu_pin: pinmux_P1_29_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkx.gpio3_21 */
+ P1_29_gpio_pd_pin: pinmux_P1_29_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkx.gpio3_21 */
+ P1_29_gpio_input_pin: pinmux_P1_29_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_ahclkx.gpio3_21 */
+ P1_29_qep_pin: pinmux_P1_29_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_ahclkx.eqep0_strobe */
+ P1_29_pruout_pin: pinmux_P1_29_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_ahclkx.pru0_out7 */
+ P1_29_pruin_pin: pinmux_P1_29_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09ac, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_ahclkx.pru0_in7 */
+
+ /* P1_30 (ZCZ ball E16) uart0_txd */
+ P1_30_default_pin: pinmux_P1_30_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0974, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* uart0_txd.uart0_txd */
+ P1_30_gpio_pin: pinmux_P1_30_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0974, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart0_txd.gpio1_11 */
+ P1_30_gpio_pu_pin: pinmux_P1_30_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0974, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart0_txd.gpio1_11 */
+ P1_30_gpio_pd_pin: pinmux_P1_30_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0974, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart0_txd.gpio1_11 */
+ P1_30_gpio_input_pin: pinmux_P1_30_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0974, PIN_INPUT | MUX_MODE7) >; }; /* uart0_txd.gpio1_11 */
+ P1_30_uart_pin: pinmux_P1_30_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0974, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* uart0_txd.uart0_txd */
+ P1_30_spi_cs_pin: pinmux_P1_30_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0974, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* uart0_txd.spi1_cs1 */
+ P1_30_can_pin: pinmux_P1_30_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0974, PIN_INPUT_PULLUP | MUX_MODE2) >; }; /* uart0_txd.dcan0_rx */
+ P1_30_i2c_pin: pinmux_P1_30_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0974, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart0_txd.i2c2_scl */
+ P1_30_pruout_pin: pinmux_P1_30_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0974, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* uart0_txd.pru1_out15 */
+ P1_30_pruin_pin: pinmux_P1_30_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0974, PIN_INPUT | MUX_MODE6) >; }; /* uart0_txd.pru1_in15 */
+
+ /* P1_31 (ZCZ ball B12) pru0_in4 */
+ P1_31_default_pin: pinmux_P1_31_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_aclkr.pru0_in4 */
+ P1_31_gpio_pin: pinmux_P1_31_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkr.gpio3_18 */
+ P1_31_gpio_pu_pin: pinmux_P1_31_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkr.gpio3_18 */
+ P1_31_gpio_pd_pin: pinmux_P1_31_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkr.gpio3_18 */
+ P1_31_gpio_input_pin: pinmux_P1_31_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_aclkr.gpio3_18 */
+ P1_31_qep_pin: pinmux_P1_31_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_aclkr.eqep0a_in */
+ P1_31_pruout_pin: pinmux_P1_31_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_aclkr.pru0_out4 */
+ P1_31_pruin_pin: pinmux_P1_31_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a0, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_aclkr.pru0_in4 */
+
+ /* P1_32 (ZCZ ball E15) uart0_rxd */
+ P1_32_default_pin: pinmux_P1_32_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* uart0_rxd.uart0_rxd */
+ P1_32_gpio_pin: pinmux_P1_32_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0970, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart0_rxd.gpio1_10 */
+ P1_32_gpio_pu_pin: pinmux_P1_32_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart0_rxd.gpio1_10 */
+ P1_32_gpio_pd_pin: pinmux_P1_32_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart0_rxd.gpio1_10 */
+ P1_32_gpio_input_pin: pinmux_P1_32_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0970, PIN_INPUT | MUX_MODE7) >; }; /* uart0_rxd.gpio1_10 */
+ P1_32_uart_pin: pinmux_P1_32_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* uart0_rxd.uart0_rxd */
+ P1_32_spi_cs_pin: pinmux_P1_32_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* uart0_rxd.spi1_cs0 */
+ P1_32_can_pin: pinmux_P1_32_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLUP | MUX_MODE2) >; }; /* uart0_rxd.dcan0_tx */
+ P1_32_i2c_pin: pinmux_P1_32_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart0_rxd.i2c2_sda */
+ P1_32_pruout_pin: pinmux_P1_32_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* uart0_rxd.pru1_out14 */
+ P1_32_pruin_pin: pinmux_P1_32_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0970, PIN_INPUT | MUX_MODE6) >; }; /* uart0_rxd.pru1_in14 */
+
+ /* P1_33 (ZCZ ball B13) pru0_in1 */
+ P1_33_default_pin: pinmux_P1_33_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_fsx.pru0_in1 */
+ P1_33_gpio_pin: pinmux_P1_33_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsx.gpio3_15 */
+ P1_33_gpio_pu_pin: pinmux_P1_33_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsx.gpio3_15 */
+ P1_33_gpio_pd_pin: pinmux_P1_33_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsx.gpio3_15 */
+ P1_33_gpio_input_pin: pinmux_P1_33_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_fsx.gpio3_15 */
+ P1_33_pwm_pin: pinmux_P1_33_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_fsx.ehrpwm0b */
+ P1_33_spi_pin: pinmux_P1_33_spi_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* mcasp0_fsx.spi1_d0 */
+ P1_33_pruout_pin: pinmux_P1_33_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_fsx.pru0_out1 */
+ P1_33_pruin_pin: pinmux_P1_33_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0994, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_fsx.pru0_in1 */
+
+ /* P1_34 (ZCZ ball T11) gpio0_26 */
+ P1_34_default_pin: pinmux_P1_34_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad10.gpio0_26 */
+ P1_34_gpio_pin: pinmux_P1_34_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0828, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad10.gpio0_26 */
+ P1_34_gpio_pu_pin: pinmux_P1_34_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad10.gpio0_26 */
+ P1_34_gpio_pd_pin: pinmux_P1_34_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad10.gpio0_26 */
+ P1_34_gpio_input_pin: pinmux_P1_34_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0828, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad10.gpio0_26 */
+ P1_34_pwm_pin: pinmux_P1_34_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad10.ehrpwm2_tripzone_input */
+
+ /* P1_35 (ZCZ ball V5) pru1_in10 */
+ P1_35_default_pin: pinmux_P1_35_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_INPUT | MUX_MODE6) >; }; /* lcd_pclk.pru1_in10 */
+ P1_35_gpio_pin: pinmux_P1_35_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_pclk.gpio2_24 */
+ P1_35_gpio_pu_pin: pinmux_P1_35_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_pclk.gpio2_24 */
+ P1_35_gpio_pd_pin: pinmux_P1_35_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_pclk.gpio2_24 */
+ P1_35_gpio_input_pin: pinmux_P1_35_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_INPUT | MUX_MODE7) >; }; /* lcd_pclk.gpio2_24 */
+ P1_35_pruout_pin: pinmux_P1_35_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_pclk.pru1_out10 */
+ P1_35_pruin_pin: pinmux_P1_35_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e8, PIN_INPUT | MUX_MODE6) >; }; /* lcd_pclk.pru1_in10 */
+
+ /* P1_36 (ZCZ ball A13) ehrpwm0a */
+ P1_36_default_pin: pinmux_P1_36_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_aclkx.ehrpwm0a */
+ P1_36_gpio_pin: pinmux_P1_36_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkx.gpio3_14 */
+ P1_36_gpio_pu_pin: pinmux_P1_36_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkx.gpio3_14 */
+ P1_36_gpio_pd_pin: pinmux_P1_36_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_aclkx.gpio3_14 */
+ P1_36_gpio_input_pin: pinmux_P1_36_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_aclkx.gpio3_14 */
+ P1_36_pwm_pin: pinmux_P1_36_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_aclkx.ehrpwm0a */
+ P1_36_spi_sclk_pin: pinmux_P1_36_spi_sclk_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* mcasp0_aclkx.spi1_sclk */
+ P1_36_pruout_pin: pinmux_P1_36_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_aclkx.pru0_out0 */
+ P1_36_pruin_pin: pinmux_P1_36_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0990, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_aclkx.pru0_in0 */
+
+
+ /************************/
+ /* P2 Header */
+ /************************/
+
+ /* P2_01 (ZCZ ball U14) ehrpwm1a */
+ P2_01_default_pin: pinmux_P2_01_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_a2.ehrpwm1a */
+ P2_01_gpio_pin: pinmux_P2_01_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a2.gpio1_18 */
+ P2_01_gpio_pu_pin: pinmux_P2_01_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a2.gpio1_18 */
+ P2_01_gpio_pd_pin: pinmux_P2_01_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a2.gpio1_18 */
+ P2_01_gpio_input_pin: pinmux_P2_01_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_a2.gpio1_18 */
+ P2_01_pwm_pin: pinmux_P2_01_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_a2.ehrpwm1a */
+
+ /* P2_02 (ZCZ ball V17) gpio1_27 */
+ P2_02_default_pin: pinmux_P2_02_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x086c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a11.gpio1_27 */
+ P2_02_gpio_pin: pinmux_P2_02_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x086c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a11.gpio1_27 */
+ P2_02_gpio_pu_pin: pinmux_P2_02_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x086c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a11.gpio1_27 */
+ P2_02_gpio_pd_pin: pinmux_P2_02_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x086c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a11.gpio1_27 */
+ P2_02_gpio_input_pin: pinmux_P2_02_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x086c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_a11.gpio1_27 */
+
+ /* P2_03 (ZCZ ball T10) gpio0_23 */
+ P2_03_default_pin: pinmux_P2_03_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P2_03_gpio_pin: pinmux_P2_03_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P2_03_gpio_pu_pin: pinmux_P2_03_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P2_03_gpio_pd_pin: pinmux_P2_03_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P2_03_gpio_input_pin: pinmux_P2_03_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad9.gpio0_23 */
+ P2_03_pwm_pin: pinmux_P2_03_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad9.ehrpwm2b */
+
+ /* P2_04 (ZCZ ball T16) gpio1_26 */
+ P2_04_default_pin: pinmux_P2_04_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0868, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a10.gpio1_26 */
+ P2_04_gpio_pin: pinmux_P2_04_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0868, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a10.gpio1_26 */
+ P2_04_gpio_pu_pin: pinmux_P2_04_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0868, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a10.gpio1_26 */
+ P2_04_gpio_pd_pin: pinmux_P2_04_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0868, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a10.gpio1_26 */
+ P2_04_gpio_input_pin: pinmux_P2_04_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0868, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_a10.gpio1_26 */
+
+ /* P2_05 (ZCZ ball T17) uart4_rxd */
+ P2_05_default_pin: pinmux_P2_05_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; }; /* gpmc_wait0.uart4_rxd */
+ P2_05_gpio_pin: pinmux_P2_05_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wait0.gpio0_30 */
+ P2_05_gpio_pu_pin: pinmux_P2_05_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wait0.gpio0_30 */
+ P2_05_gpio_pd_pin: pinmux_P2_05_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wait0.gpio0_30 */
+ P2_05_gpio_input_pin: pinmux_P2_05_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_wait0.gpio0_30 */
+ P2_05_uart_pin: pinmux_P2_05_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; }; /* gpmc_wait0.uart4_rxd */
+
+ /* P2_06 (ZCZ ball U16) gpio1_25 */
+ P2_06_default_pin: pinmux_P2_06_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0864, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a9.gpio1_25 */
+ P2_06_gpio_pin: pinmux_P2_06_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0864, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a9.gpio1_25 */
+ P2_06_gpio_pu_pin: pinmux_P2_06_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0864, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a9.gpio1_25 */
+ P2_06_gpio_pd_pin: pinmux_P2_06_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0864, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a9.gpio1_25 */
+ P2_06_gpio_input_pin: pinmux_P2_06_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0864, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_a9.gpio1_25 */
+
+ /* P2_07 (ZCZ ball U17) uart4_txd */
+ P2_07_default_pin: pinmux_P2_07_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; }; /* gpmc_wpn.uart4_txd */
+ P2_07_gpio_pin: pinmux_P2_07_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wpn.gpio0_31 */
+ P2_07_gpio_pu_pin: pinmux_P2_07_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wpn.gpio0_31 */
+ P2_07_gpio_pd_pin: pinmux_P2_07_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_wpn.gpio0_31 */
+ P2_07_gpio_input_pin: pinmux_P2_07_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_wpn.gpio0_31 */
+ P2_07_uart_pin: pinmux_P2_07_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; }; /* gpmc_wpn.uart4_txd */
+
+ /* P2_08 (ZCZ ball U18) gpio1_28 */
+ P2_08_default_pin: pinmux_P2_08_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+ P2_08_gpio_pin: pinmux_P2_08_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+ P2_08_gpio_pu_pin: pinmux_P2_08_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+ P2_08_gpio_pd_pin: pinmux_P2_08_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+ P2_08_gpio_input_pin: pinmux_P2_08_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0878, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_be1n.gpio1_28 */
+
+ /* P2_09 (ZCZ ball D15) i2c1_scl */
+ P2_09_default_pin: pinmux_P2_09_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_txd.i2c1_scl */
+ P2_09_gpio_pin: pinmux_P2_09_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart1_txd.gpio0_15 */
+ P2_09_gpio_pu_pin: pinmux_P2_09_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_txd.gpio0_15 */
+ P2_09_gpio_pd_pin: pinmux_P2_09_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart1_txd.gpio0_15 */
+ P2_09_gpio_input_pin: pinmux_P2_09_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_INPUT | MUX_MODE7) >; }; /* uart1_txd.gpio0_15 */
+ P2_09_uart_pin: pinmux_P2_09_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* uart1_txd.uart1_txd */
+ P2_09_can_pin: pinmux_P2_09_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_INPUT_PULLUP | MUX_MODE2) >; }; /* uart1_txd.dcan1_rx */
+ P2_09_i2c_pin: pinmux_P2_09_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_txd.i2c1_scl */
+ P2_09_pru_uart_pin: pinmux_P2_09_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; }; /* uart1_txd.pr1_uart0_txd */
+ P2_09_pruin_pin: pinmux_P2_09_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0984, PIN_INPUT | MUX_MODE6) >; }; /* uart1_txd.pru0_in16 */
+
+ /* P2_10 (ZCZ ball R14) gpio1_20 */
+ P2_10_default_pin: pinmux_P2_10_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0850, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a4.gpio1_20 */
+ P2_10_gpio_pin: pinmux_P2_10_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0850, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a4.gpio1_20 */
+ P2_10_gpio_pu_pin: pinmux_P2_10_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0850, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a4.gpio1_20 */
+ P2_10_gpio_pd_pin: pinmux_P2_10_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0850, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_a4.gpio1_20 */
+ P2_10_gpio_input_pin: pinmux_P2_10_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0850, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_a4.gpio1_20 */
+ P2_10_qep_pin: pinmux_P2_10_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0850, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; }; /* gpmc_a4.eqep1a_in */
+
+ /* P2_11 (ZCZ ball D16) i2c1_sda */
+ P2_11_default_pin: pinmux_P2_11_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_rxd.i2c1_sda */
+ P2_11_gpio_pin: pinmux_P2_11_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart1_rxd.gpio0_14 */
+ P2_11_gpio_pu_pin: pinmux_P2_11_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart1_rxd.gpio0_14 */
+ P2_11_gpio_pd_pin: pinmux_P2_11_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart1_rxd.gpio0_14 */
+ P2_11_gpio_input_pin: pinmux_P2_11_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_INPUT | MUX_MODE7) >; }; /* uart1_rxd.gpio0_14 */
+ P2_11_uart_pin: pinmux_P2_11_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; }; /* uart1_rxd.uart1_rxd */
+ P2_11_can_pin: pinmux_P2_11_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | MUX_MODE2) >; }; /* uart1_rxd.dcan1_tx */
+ P2_11_i2c_pin: pinmux_P2_11_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart1_rxd.i2c1_sda */
+ P2_11_pru_uart_pin: pinmux_P2_11_pru_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; }; /* uart1_rxd.pr1_uart0_rxd */
+ P2_11_pruin_pin: pinmux_P2_11_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0980, PIN_INPUT | MUX_MODE6) >; }; /* uart1_rxd.pru1_in16 */
+
+ /* P2_12 POWER_BUTTON */
+
+ /* P2_13 VOUT-5V */
+
+ /* P2_14 BAT-VIN */
+
+ /* P2_15 GND */
+
+ /* P2_16 BAT-TEMP */
+
+ /* P2_17 (ZCZ ball V12) gpio2_1 */
+ P2_17_default_pin: pinmux_P2_17_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+ P2_17_gpio_pin: pinmux_P2_17_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+ P2_17_gpio_pu_pin: pinmux_P2_17_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+ P2_17_gpio_pd_pin: pinmux_P2_17_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+ P2_17_gpio_input_pin: pinmux_P2_17_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x088c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_clk.gpio2_1 */
+
+ /* P2_18 (ZCZ ball U13) gpio1_15 */
+ P2_18_default_pin: pinmux_P2_18_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P2_18_gpio_pin: pinmux_P2_18_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P2_18_gpio_pu_pin: pinmux_P2_18_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P2_18_gpio_pd_pin: pinmux_P2_18_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P2_18_gpio_input_pin: pinmux_P2_18_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad15.gpio1_15 */
+ P2_18_qep_pin: pinmux_P2_18_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad15.eqep2_strobe */
+ P2_18_pru_ecap_pin: pinmux_P2_18_pru_ecap_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* gpmc_ad15.pr1_ecap0_ecap_capin_apwm_o */
+ P2_18_pruin_pin: pinmux_P2_18_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x083c, PIN_INPUT | MUX_MODE6) >; }; /* gpmc_ad15.pru0_in15 */
+
+ /* P2_19 (ZCZ ball U12) gpio0_27 */
+ P2_19_default_pin: pinmux_P2_19_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad11.gpio0_27 */
+ P2_19_gpio_pin: pinmux_P2_19_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x082c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad11.gpio0_27 */
+ P2_19_gpio_pu_pin: pinmux_P2_19_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad11.gpio0_27 */
+ P2_19_gpio_pd_pin: pinmux_P2_19_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad11.gpio0_27 */
+ P2_19_gpio_input_pin: pinmux_P2_19_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x082c, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad11.gpio0_27 */
+ P2_19_pwm_pin: pinmux_P2_19_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad11.ehrpwm0_synco */
+
+ /* P2_20 (ZCZ ball T13) gpio2_0 */
+ P2_20_default_pin: pinmux_P2_20_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0888, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn3.gpio2_0 */
+ P2_20_gpio_pin: pinmux_P2_20_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0888, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn3.gpio2_0 */
+ P2_20_gpio_pu_pin: pinmux_P2_20_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0888, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn3.gpio2_0 */
+ P2_20_gpio_pd_pin: pinmux_P2_20_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0888, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_csn3.gpio2_0 */
+ P2_20_gpio_input_pin: pinmux_P2_20_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0888, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_csn3.gpio2_0 */
+
+ /* P2_21 GND */
+
+ /* P2_22 (ZCZ ball V13) gpio1_14 */
+ P2_22_default_pin: pinmux_P2_22_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P2_22_gpio_pin: pinmux_P2_22_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P2_22_gpio_pu_pin: pinmux_P2_22_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P2_22_gpio_pd_pin: pinmux_P2_22_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P2_22_gpio_input_pin: pinmux_P2_22_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad14.gpio1_14 */
+ P2_22_qep_pin: pinmux_P2_22_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad14.eqep2_index */
+ P2_22_pruin_pin: pinmux_P2_22_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0838, PIN_INPUT | MUX_MODE6) >; }; /* gpmc_ad14.pru0_in14 */
+
+ /* P2_23 VOUT-3.3V */
+
+ /* P2_24 (ZCZ ball T12) gpio1_12 */
+ P2_24_default_pin: pinmux_P2_24_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P2_24_gpio_pin: pinmux_P2_24_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P2_24_gpio_pu_pin: pinmux_P2_24_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P2_24_gpio_pd_pin: pinmux_P2_24_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P2_24_gpio_input_pin: pinmux_P2_24_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad12.gpio1_12 */
+ P2_24_qep_pin: pinmux_P2_24_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad12.eqep2a_in */
+ P2_24_pruout_pin: pinmux_P2_24_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_ad12.pru0_out14 */
+
+ /* P2_25 (ZCZ ball E17) spi1_d1 */
+ P2_25_default_pin: pinmux_P2_25_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x096c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* uart0_rtsn.spi1_d1 */
+ P2_25_gpio_pin: pinmux_P2_25_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x096c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart0_rtsn.gpio1_9 */
+ P2_25_gpio_pu_pin: pinmux_P2_25_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x096c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart0_rtsn.gpio1_9 */
+ P2_25_gpio_pd_pin: pinmux_P2_25_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x096c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart0_rtsn.gpio1_9 */
+ P2_25_gpio_input_pin: pinmux_P2_25_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x096c, PIN_INPUT | MUX_MODE7) >; }; /* uart0_rtsn.gpio1_9 */
+ P2_25_uart_pin: pinmux_P2_25_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x096c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* uart0_rtsn.uart4_txd */
+ P2_25_can_pin: pinmux_P2_25_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x096c, PIN_INPUT_PULLUP | MUX_MODE2) >; }; /* uart0_rtsn.dcan1_rx */
+ P2_25_i2c_pin: pinmux_P2_25_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x096c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart0_rtsn.i2c1_scl */
+ P2_25_spi_pin: pinmux_P2_25_spi_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x096c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* uart0_rtsn.spi1_d1 */
+ P2_25_spi_cs_pin: pinmux_P2_25_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x096c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; }; /* uart0_rtsn.spi1_cs0 */
+
+ /* P2_26 RESET# */
+
+ /* P2_27 (ZCZ ball E18) spi1_d0 */
+ P2_27_default_pin: pinmux_P2_27_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0968, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* uart0_ctsn.spi1_d0 */
+ P2_27_gpio_pin: pinmux_P2_27_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0968, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* uart0_ctsn.gpio1_8 */
+ P2_27_gpio_pu_pin: pinmux_P2_27_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0968, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* uart0_ctsn.gpio1_8 */
+ P2_27_gpio_pd_pin: pinmux_P2_27_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0968, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* uart0_ctsn.gpio1_8 */
+ P2_27_gpio_input_pin: pinmux_P2_27_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0968, PIN_INPUT | MUX_MODE7) >; }; /* uart0_ctsn.gpio1_8 */
+ P2_27_uart_pin: pinmux_P2_27_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0968, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* uart0_ctsn.uart4_rxd */
+ P2_27_can_pin: pinmux_P2_27_can_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0968, PIN_OUTPUT_PULLUP | MUX_MODE2) >; }; /* uart0_ctsn.dcan1_tx */
+ P2_27_i2c_pin: pinmux_P2_27_i2c_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0968, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* uart0_ctsn.i2c1_sda */
+ P2_27_spi_pin: pinmux_P2_27_spi_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0968, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* uart0_ctsn.spi1_d0 */
+
+ /* P2_28 (ZCZ ball D13) pru0_in6 */
+ P2_28_default_pin: pinmux_P2_28_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_axr1.pru0_in6 */
+ P2_28_gpio_pin: pinmux_P2_28_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr1.gpio3_20 */
+ P2_28_gpio_pu_pin: pinmux_P2_28_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr1.gpio3_20 */
+ P2_28_gpio_pd_pin: pinmux_P2_28_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr1.gpio3_20 */
+ P2_28_gpio_input_pin: pinmux_P2_28_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_axr1.gpio3_20 */
+ P2_28_qep_pin: pinmux_P2_28_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_axr1.eqep0_index */
+ P2_28_pruout_pin: pinmux_P2_28_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_axr1.pru0_out6 */
+ P2_28_pruin_pin: pinmux_P2_28_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a8, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_axr1.pru0_in6 */
+
+ /* P2_29 (ZCZ ball C18) spi1_sclk */
+ P2_29_default_pin: pinmux_P2_29_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* eCAP0_in_PWM0_out.spi1_sclk */
+ P2_29_gpio_pin: pinmux_P2_29_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* eCAP0_in_PWM0_out.gpio0_7 */
+ P2_29_gpio_pu_pin: pinmux_P2_29_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* eCAP0_in_PWM0_out.gpio0_7 */
+ P2_29_gpio_pd_pin: pinmux_P2_29_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* eCAP0_in_PWM0_out.gpio0_7 */
+ P2_29_gpio_input_pin: pinmux_P2_29_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_INPUT | MUX_MODE7) >; }; /* eCAP0_in_PWM0_out.gpio0_7 */
+ P2_29_pwm_pin: pinmux_P2_29_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE0) >; }; /* eCAP0_in_PWM0_out.ecap0_in_pwm0_out */
+ P2_29_uart_pin: pinmux_P2_29_uart_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* eCAP0_in_PWM0_out.uart3_txd */
+ P2_29_spi_cs_pin: pinmux_P2_29_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; }; /* eCAP0_in_PWM0_out.spi1_cs1 */
+ P2_29_pru_ecap_pin: pinmux_P2_29_pru_ecap_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; }; /* eCAP0_in_PWM0_out.pr1_ecap0_ecap_capin_apwm_o */
+ P2_29_spi_sclk_pin: pinmux_P2_29_spi_sclk_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* eCAP0_in_PWM0_out.spi1_sclk */
+
+ /* P2_30 (ZCZ ball C12) pru0_in3 */
+ P2_30_default_pin: pinmux_P2_30_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_ahclkr.pru0_in3 */
+ P2_30_gpio_pin: pinmux_P2_30_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkr.gpio3_17 */
+ P2_30_gpio_pu_pin: pinmux_P2_30_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkr.gpio3_17 */
+ P2_30_gpio_pd_pin: pinmux_P2_30_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_ahclkr.gpio3_17 */
+ P2_30_gpio_input_pin: pinmux_P2_30_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_ahclkr.gpio3_17 */
+ P2_30_pwm_pin: pinmux_P2_30_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_ahclkr.ehrpwm0_synci */
+ P2_30_spi_cs_pin: pinmux_P2_30_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* mcasp0_ahclkr.spi1_cs0 */
+ P2_30_pruout_pin: pinmux_P2_30_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_ahclkr.pru0_out3 */
+ P2_30_pruin_pin: pinmux_P2_30_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x099c, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_ahclkr.pru0_in3 */
+
+ /* P2_31 (ZCZ ball A15) spi1_cs1 */
+ P2_31_default_pin: pinmux_P2_31_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* xdma_event_intr0.spi1_cs1 */
+ P2_31_gpio_pin: pinmux_P2_31_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr0.gpio0_19 */
+ P2_31_gpio_pu_pin: pinmux_P2_31_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr0.gpio0_19 */
+ P2_31_gpio_pd_pin: pinmux_P2_31_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* xdma_event_intr0.gpio0_19 */
+ P2_31_gpio_input_pin: pinmux_P2_31_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b0, PIN_INPUT | MUX_MODE7) >; }; /* xdma_event_intr0.gpio0_19 */
+ P2_31_spi_cs_pin: pinmux_P2_31_spi_cs_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* xdma_event_intr0.spi1_cs1 */
+ P2_31_pruin_pin: pinmux_P2_31_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09b0, PIN_INPUT | MUX_MODE5) >; }; /* xdma_event_intr0.pru1_in16 */
+
+ /* P2_32 (ZCZ ball D12) pru0_in2 */
+ P2_32_default_pin: pinmux_P2_32_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_axr0.pru0_in2 */
+ P2_32_gpio_pin: pinmux_P2_32_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr0.gpio3_16 */
+ P2_32_gpio_pu_pin: pinmux_P2_32_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr0.gpio3_16 */
+ P2_32_gpio_pd_pin: pinmux_P2_32_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_axr0.gpio3_16 */
+ P2_32_gpio_input_pin: pinmux_P2_32_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_axr0.gpio3_16 */
+ P2_32_pwm_pin: pinmux_P2_32_pwm_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_axr0.ehrpwm0_tripzone_input */
+ P2_32_spi_pin: pinmux_P2_32_spi_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; }; /* mcasp0_axr0.spi1_d1 */
+ P2_32_pruout_pin: pinmux_P2_32_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_axr0.pru0_out2 */
+ P2_32_pruin_pin: pinmux_P2_32_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0998, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_axr0.pru0_in2 */
+
+ /* P2_33 (ZCZ ball R12) gpio1_13 */
+ P2_33_default_pin: pinmux_P2_33_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P2_33_gpio_pin: pinmux_P2_33_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P2_33_gpio_pu_pin: pinmux_P2_33_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P2_33_gpio_pd_pin: pinmux_P2_33_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P2_33_gpio_input_pin: pinmux_P2_33_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_INPUT | MUX_MODE7) >; }; /* gpmc_ad13.gpio1_13 */
+ P2_33_qep_pin: pinmux_P2_33_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; }; /* gpmc_ad13.eqep2b_in */
+ P2_33_pruout_pin: pinmux_P2_33_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; }; /* gpmc_ad13.pru0_out15 */
+
+ /* P2_34 (ZCZ ball C13) pru0_in5 */
+ P2_34_default_pin: pinmux_P2_34_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_fsr.pru0_in5 */
+ P2_34_gpio_pin: pinmux_P2_34_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsr.gpio3_19 */
+ P2_34_gpio_pu_pin: pinmux_P2_34_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsr.gpio3_19 */
+ P2_34_gpio_pd_pin: pinmux_P2_34_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* mcasp0_fsr.gpio3_19 */
+ P2_34_gpio_input_pin: pinmux_P2_34_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_INPUT | MUX_MODE7) >; }; /* mcasp0_fsr.gpio3_19 */
+ P2_34_qep_pin: pinmux_P2_34_qep_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; }; /* mcasp0_fsr.eqep0b_in */
+ P2_34_pruout_pin: pinmux_P2_34_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* mcasp0_fsr.pru0_out5 */
+ P2_34_pruin_pin: pinmux_P2_34_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x09a4, PIN_INPUT | MUX_MODE6) >; }; /* mcasp0_fsr.pru0_in5 */
+
+ /* P2_35 (ZCZ ball U5) gpio2_22 */
+ P2_35_default_pin: pinmux_P2_35_default_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_INPUT | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P2_35_gpio_pin: pinmux_P2_35_gpio_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P2_35_gpio_pu_pin: pinmux_P2_35_gpio_pu_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P2_35_gpio_pd_pin: pinmux_P2_35_gpio_pd_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P2_35_gpio_input_pin: pinmux_P2_35_gpio_input_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_INPUT | MUX_MODE7) >; }; /* lcd_vsync.gpio2_22 */
+ P2_35_pruout_pin: pinmux_P2_35_pruout_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; }; /* lcd_vsync.pru1_out8 */
+ P2_35_pruin_pin: pinmux_P2_35_pruin_pin { pinctrl-single,pins = <
+ AM33XX_IOPAD(0x08e0, PIN_INPUT | MUX_MODE6) >; }; /* lcd_vsync.pru1_in8 */
+
+ /* P2_36 (ZCZ ball C9) AIN7 */
};
&epwmss0 {
@@ -141,7 +969,8 @@
&ehrpwm0 {
status = "okay";
pinctrl-names = "default";
- pinctrl-0 = <&ehrpwm0_pins>;
+ //pinctrl-0 = <&ehrpwm0_pins>;
+ pinctrl-0 = <>;
};
&epwmss1 {
@@ -151,7 +980,18 @@
&ehrpwm1 {
status = "okay";
pinctrl-names = "default";
- pinctrl-0 = <&ehrpwm1_pins>;
+ //pinctrl-0 = <&ehrpwm1_pins>;
+ pinctrl-0 = <>;
+};
+
+&epwmss2 {
+ status = "okay";
+};
+
+&ehrpwm2 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
};
&i2c0 {
@@ -161,9 +1001,18 @@
};
};
+&i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ status = "okay";
+ clock-frequency = <400000>;
+};
+
&i2c2 {
pinctrl-names = "default";
- pinctrl-0 = <&i2c2_pins>;
+// pinctrl-0 = <&i2c2_pins>;
+ pinctrl-0 = <>;
status = "okay";
clock-frequency = <400000>;
@@ -194,14 +1043,30 @@
&uart0 {
pinctrl-names = "default";
- pinctrl-0 = <&uart0_pins>;
+ //pinctrl-0 = <&uart0_pins>;
+ pinctrl-0 = <>;
+
+ status = "okay";
+};
+
+&uart1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ status = "okay";
+};
+
+&uart2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
status = "okay";
};
&uart4 {
pinctrl-names = "default";
- pinctrl-0 = <&uart4_pins>;
+ //pinctrl-0 = <&uart4_pins>;
+ pinctrl-0 = <>;
status = "okay";
};
@@ -235,3 +1100,1092 @@
&cppi41dma {
status = "okay";
};
+
+&spi0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ channel@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "spidev";
+ symlink = "spi/0.0";
+ reg = <0>;
+ spi-max-frequency = <24000000>;
+ };
+
+ channel@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "spidev";
+ symlink = "spi/0.1";
+ reg = <1>;
+ spi-max-frequency = <24000000>;
+ status = "disabled";
+ };
+};
+
+&spi1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ channel@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "spidev";
+ symlink = "spi/1.0";
+ reg = <0>;
+ spi-max-frequency = <24000000>;
+ };
+
+ channel@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "spidev";
+ symlink = "spi/1.1";
+ reg = <1>;
+ spi-max-frequency = <24000000>;
+ };
+};
+
+&dcan0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&dcan1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+};
+
+&ocp {
+ /************************/
+ /* P1 Header */
+ /************************/
+
+ /* P1_01 VIN-AC */
+
+ /* P1_02 (ZCZ ball R5) gpio_input */
+ P1_02_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P1_02_default_pin>;
+ pinctrl-1 = <&P1_02_gpio_pin>;
+ pinctrl-2 = <&P1_02_gpio_pu_pin>;
+ pinctrl-3 = <&P1_02_gpio_pd_pin>;
+ pinctrl-4 = <&P1_02_gpio_input_pin>;
+ pinctrl-5 = <&P1_02_pruout_pin>;
+ pinctrl-6 = <&P1_02_pruin_pin>;
+ };
+
+ /* P1_03 (ZCZ ball F15) usb1_vbus_out */
+
+ /* P1_04 (ZCZ ball R6) */
+ P1_04_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P1_04_default_pin>;
+ pinctrl-1 = <&P1_04_gpio_pin>;
+ pinctrl-2 = <&P1_04_gpio_pu_pin>;
+ pinctrl-3 = <&P1_04_gpio_pd_pin>;
+ pinctrl-4 = <&P1_04_gpio_input_pin>;
+ pinctrl-5 = <&P1_04_pruout_pin>;
+ pinctrl-6 = <&P1_04_pruin_pin>;
+ };
+
+ /* P1_05 (ZCZ ball T18) usb1_vbus_in */
+
+ /* P1_06 (ZCZ ball A16) spi_cs */
+ P1_06_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "i2c", "pwm", "pru_uart";
+ pinctrl-0 = <&P1_06_default_pin>;
+ pinctrl-1 = <&P1_06_gpio_pin>;
+ pinctrl-2 = <&P1_06_gpio_pu_pin>;
+ pinctrl-3 = <&P1_06_gpio_pd_pin>;
+ pinctrl-4 = <&P1_06_gpio_input_pin>;
+ pinctrl-5 = <&P1_06_spi_cs_pin>;
+ pinctrl-6 = <&P1_06_i2c_pin>;
+ pinctrl-7 = <&P1_06_pwm_pin>;
+ pinctrl-8 = <&P1_06_pru_uart_pin>;
+ };
+
+ /* P1_07 VIN-USB */
+
+ /* P1_08 (ZCZ ball A17) spi_sclk */
+ P1_08_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_sclk", "uart", "i2c", "pwm", "pru_uart";
+ pinctrl-0 = <&P1_08_default_pin>;
+ pinctrl-1 = <&P1_08_gpio_pin>;
+ pinctrl-2 = <&P1_08_gpio_pu_pin>;
+ pinctrl-3 = <&P1_08_gpio_pd_pin>;
+ pinctrl-4 = <&P1_08_gpio_input_pin>;
+ pinctrl-5 = <&P1_08_spi_sclk_pin>;
+ pinctrl-6 = <&P1_08_uart_pin>;
+ pinctrl-7 = <&P1_08_i2c_pin>;
+ pinctrl-8 = <&P1_08_pwm_pin>;
+ pinctrl-9 = <&P1_08_pru_uart_pin>;
+ };
+
+ /* P1_09 (ZCZ ball R18) USB1-DN */
+
+ /* P1_10 (ZCZ ball B17) spi */
+ P1_10_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "uart", "i2c", "pwm", "pru_uart";
+ pinctrl-0 = <&P1_10_default_pin>;
+ pinctrl-1 = <&P1_10_gpio_pin>;
+ pinctrl-2 = <&P1_10_gpio_pu_pin>;
+ pinctrl-3 = <&P1_10_gpio_pd_pin>;
+ pinctrl-4 = <&P1_10_gpio_input_pin>;
+ pinctrl-5 = <&P1_10_spi_pin>;
+ pinctrl-6 = <&P1_10_uart_pin>;
+ pinctrl-7 = <&P1_10_i2c_pin>;
+ pinctrl-8 = <&P1_10_pwm_pin>;
+ pinctrl-9 = <&P1_10_pru_uart_pin>;
+ };
+
+ /* P1_11 (ZCZ ball R17) USB1-DP */
+
+ /* P1_12 (ZCZ ball B16) spi */
+ P1_12_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "i2c", "pwm", "pru_uart";
+ pinctrl-0 = <&P1_12_default_pin>;
+ pinctrl-1 = <&P1_12_gpio_pin>;
+ pinctrl-2 = <&P1_12_gpio_pu_pin>;
+ pinctrl-3 = <&P1_12_gpio_pd_pin>;
+ pinctrl-4 = <&P1_12_gpio_input_pin>;
+ pinctrl-5 = <&P1_12_spi_pin>;
+ pinctrl-6 = <&P1_12_i2c_pin>;
+ pinctrl-7 = <&P1_12_pwm_pin>;
+ pinctrl-8 = <&P1_12_pru_uart_pin>;
+ };
+
+ /* P1_13 (ZCZ ball P17) USB1-ID */
+
+ /* P1_14 VOUT-3.3V */
+
+ /* P1_15 GND */
+
+ /* P1_16 GND */
+
+ /* P1_17 (ZCZ ball A9) VREFN */
+
+ /* P1_18 (ZCZ ball B9) VREFP */
+
+ /* P1_19 (ZCZ ball B6) AIN0 */
+
+ /* P1_20 (ZCZ ball D14) */
+ P1_20_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruin";
+ pinctrl-0 = <&P1_20_default_pin>;
+ pinctrl-1 = <&P1_20_gpio_pin>;
+ pinctrl-2 = <&P1_20_gpio_pu_pin>;
+ pinctrl-3 = <&P1_20_gpio_pd_pin>;
+ pinctrl-4 = <&P1_20_gpio_input_pin>;
+ pinctrl-5 = <&P1_20_pruin_pin>;
+ };
+
+ /* P1_21 (ZCZ ball C7) AIN1 */
+
+ /* P1_22 GND */
+
+ /* P1_23 (ZCZ ball B7) AIN2 */
+
+ /* P1_24 VOUT-5V */
+
+ /* P1_25 (ZCZ ball A7) AIN3 */
+
+ /* P1_26 (ZCZ ball D18) i2c */
+ P1_26_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "can", "i2c", "pru_uart";
+ pinctrl-0 = <&P1_26_default_pin>;
+ pinctrl-1 = <&P1_26_gpio_pin>;
+ pinctrl-2 = <&P1_26_gpio_pu_pin>;
+ pinctrl-3 = <&P1_26_gpio_pd_pin>;
+ pinctrl-4 = <&P1_26_gpio_input_pin>;
+ pinctrl-5 = <&P1_26_spi_cs_pin>;
+ pinctrl-6 = <&P1_26_can_pin>;
+ pinctrl-7 = <&P1_26_i2c_pin>;
+ pinctrl-8 = <&P1_26_pru_uart_pin>;
+ };
+
+ /* P1_27 (ZCZ ball C8) AIN4 */
+
+ /* P1_28 (ZCZ ball D17) i2c */
+ P1_28_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "can", "i2c", "pru_uart";
+ pinctrl-0 = <&P1_28_default_pin>;
+ pinctrl-1 = <&P1_28_gpio_pin>;
+ pinctrl-2 = <&P1_28_gpio_pu_pin>;
+ pinctrl-3 = <&P1_28_gpio_pd_pin>;
+ pinctrl-4 = <&P1_28_gpio_input_pin>;
+ pinctrl-5 = <&P1_28_spi_cs_pin>;
+ pinctrl-6 = <&P1_28_can_pin>;
+ pinctrl-7 = <&P1_28_i2c_pin>;
+ pinctrl-8 = <&P1_28_pru_uart_pin>;
+ };
+
+ /* P1_29 (ZCZ ball A14) pruin */
+ P1_29_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P1_29_default_pin>;
+ pinctrl-1 = <&P1_29_gpio_pin>;
+ pinctrl-2 = <&P1_29_gpio_pu_pin>;
+ pinctrl-3 = <&P1_29_gpio_pd_pin>;
+ pinctrl-4 = <&P1_29_gpio_input_pin>;
+ pinctrl-5 = <&P1_29_qep_pin>;
+ pinctrl-6 = <&P1_29_pruout_pin>;
+ pinctrl-7 = <&P1_29_pruin_pin>;
+ };
+
+ /* P1_30 (ZCZ ball E16) uart */
+ P1_30_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "uart", "can", "i2c", "pruout", "pruin";
+ pinctrl-0 = <&P1_30_default_pin>;
+ pinctrl-1 = <&P1_30_gpio_pin>;
+ pinctrl-2 = <&P1_30_gpio_pu_pin>;
+ pinctrl-3 = <&P1_30_gpio_pd_pin>;
+ pinctrl-4 = <&P1_30_gpio_input_pin>;
+ pinctrl-5 = <&P1_30_spi_cs_pin>;
+ pinctrl-6 = <&P1_30_uart_pin>;
+ pinctrl-7 = <&P1_30_can_pin>;
+ pinctrl-8 = <&P1_30_i2c_pin>;
+ pinctrl-9 = <&P1_30_pruout_pin>;
+ pinctrl-10 = <&P1_30_pruin_pin>;
+ };
+
+ /* P1_31 (ZCZ ball B12) pruin */
+ P1_31_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P1_31_default_pin>;
+ pinctrl-1 = <&P1_31_gpio_pin>;
+ pinctrl-2 = <&P1_31_gpio_pu_pin>;
+ pinctrl-3 = <&P1_31_gpio_pd_pin>;
+ pinctrl-4 = <&P1_31_gpio_input_pin>;
+ pinctrl-5 = <&P1_31_qep_pin>;
+ pinctrl-6 = <&P1_31_pruout_pin>;
+ pinctrl-7 = <&P1_31_pruin_pin>;
+ };
+
+ /* P1_32 (ZCZ ball E15) uart */
+ P1_32_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "uart", "can", "i2c", "pruout", "pruin";
+ pinctrl-0 = <&P1_32_default_pin>;
+ pinctrl-1 = <&P1_32_gpio_pin>;
+ pinctrl-2 = <&P1_32_gpio_pu_pin>;
+ pinctrl-3 = <&P1_32_gpio_pd_pin>;
+ pinctrl-4 = <&P1_32_gpio_input_pin>;
+ pinctrl-5 = <&P1_32_spi_cs_pin>;
+ pinctrl-6 = <&P1_32_uart_pin>;
+ pinctrl-7 = <&P1_32_can_pin>;
+ pinctrl-8 = <&P1_32_i2c_pin>;
+ pinctrl-9 = <&P1_32_pruout_pin>;
+ pinctrl-10 = <&P1_32_pruin_pin>;
+ };
+
+ /* P1_33 (ZCZ ball B13) pruin */
+ P1_33_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P1_33_default_pin>;
+ pinctrl-1 = <&P1_33_gpio_pin>;
+ pinctrl-2 = <&P1_33_gpio_pu_pin>;
+ pinctrl-3 = <&P1_33_gpio_pd_pin>;
+ pinctrl-4 = <&P1_33_gpio_input_pin>;
+ pinctrl-5 = <&P1_33_spi_pin>;
+ pinctrl-6 = <&P1_33_pwm_pin>;
+ pinctrl-7 = <&P1_33_pruout_pin>;
+ pinctrl-8 = <&P1_33_pruin_pin>;
+ };
+
+ /* P1_34 (ZCZ ball T11) */
+ P1_34_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P1_34_default_pin>;
+ pinctrl-1 = <&P1_34_gpio_pin>;
+ pinctrl-2 = <&P1_34_gpio_pu_pin>;
+ pinctrl-3 = <&P1_34_gpio_pd_pin>;
+ pinctrl-4 = <&P1_34_gpio_input_pin>;
+ pinctrl-5 = <&P1_34_pwm_pin>;
+ };
+
+ /* P1_35 (ZCZ ball V5) pruin */
+ P1_35_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P1_35_default_pin>;
+ pinctrl-1 = <&P1_35_gpio_pin>;
+ pinctrl-2 = <&P1_35_gpio_pu_pin>;
+ pinctrl-3 = <&P1_35_gpio_pd_pin>;
+ pinctrl-4 = <&P1_35_gpio_input_pin>;
+ pinctrl-5 = <&P1_35_pruout_pin>;
+ pinctrl-6 = <&P1_35_pruin_pin>;
+ };
+
+ /* P1_36 (ZCZ ball A13) pwm */
+ P1_36_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_sclk", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P1_36_default_pin>;
+ pinctrl-1 = <&P1_36_gpio_pin>;
+ pinctrl-2 = <&P1_36_gpio_pu_pin>;
+ pinctrl-3 = <&P1_36_gpio_pd_pin>;
+ pinctrl-4 = <&P1_36_gpio_input_pin>;
+ pinctrl-5 = <&P1_36_spi_sclk_pin>;
+ pinctrl-6 = <&P1_36_pwm_pin>;
+ pinctrl-7 = <&P1_36_pruout_pin>;
+ pinctrl-8 = <&P1_36_pruin_pin>;
+ };
+
+
+ /************************/
+ /* P2 Header */
+ /************************/
+
+ /* P2_01 (ZCZ ball U14) pwm */
+ P2_01_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P2_01_default_pin>;
+ pinctrl-1 = <&P2_01_gpio_pin>;
+ pinctrl-2 = <&P2_01_gpio_pu_pin>;
+ pinctrl-3 = <&P2_01_gpio_pd_pin>;
+ pinctrl-4 = <&P2_01_gpio_input_pin>;
+ pinctrl-5 = <&P2_01_pwm_pin>;
+ };
+
+ /* P2_02 (ZCZ ball V17) */
+ P2_02_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P2_02_default_pin>;
+ pinctrl-1 = <&P2_02_gpio_pin>;
+ pinctrl-2 = <&P2_02_gpio_pu_pin>;
+ pinctrl-3 = <&P2_02_gpio_pd_pin>;
+ pinctrl-4 = <&P2_02_gpio_input_pin>;
+ };
+
+ /* P2_03 (ZCZ ball T10) */
+ P2_03_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P2_03_default_pin>;
+ pinctrl-1 = <&P2_03_gpio_pin>;
+ pinctrl-2 = <&P2_03_gpio_pu_pin>;
+ pinctrl-3 = <&P2_03_gpio_pd_pin>;
+ pinctrl-4 = <&P2_03_gpio_input_pin>;
+ pinctrl-5 = <&P2_03_pwm_pin>;
+ };
+
+ /* P2_04 (ZCZ ball T16) */
+ P2_04_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P2_04_default_pin>;
+ pinctrl-1 = <&P2_04_gpio_pin>;
+ pinctrl-2 = <&P2_04_gpio_pu_pin>;
+ pinctrl-3 = <&P2_04_gpio_pd_pin>;
+ pinctrl-4 = <&P2_04_gpio_input_pin>;
+ };
+
+ /* P2_05 (ZCZ ball T17) uart */
+ P2_05_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart";
+ pinctrl-0 = <&P2_05_default_pin>;
+ pinctrl-1 = <&P2_05_gpio_pin>;
+ pinctrl-2 = <&P2_05_gpio_pu_pin>;
+ pinctrl-3 = <&P2_05_gpio_pd_pin>;
+ pinctrl-4 = <&P2_05_gpio_input_pin>;
+ pinctrl-5 = <&P2_05_uart_pin>;
+ };
+
+ /* P2_06 (ZCZ ball U16) */
+ P2_06_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P2_06_default_pin>;
+ pinctrl-1 = <&P2_06_gpio_pin>;
+ pinctrl-2 = <&P2_06_gpio_pu_pin>;
+ pinctrl-3 = <&P2_06_gpio_pd_pin>;
+ pinctrl-4 = <&P2_06_gpio_input_pin>;
+ };
+
+ /* P2_07 (ZCZ ball U17) uart */
+ P2_07_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart";
+ pinctrl-0 = <&P2_07_default_pin>;
+ pinctrl-1 = <&P2_07_gpio_pin>;
+ pinctrl-2 = <&P2_07_gpio_pu_pin>;
+ pinctrl-3 = <&P2_07_gpio_pd_pin>;
+ pinctrl-4 = <&P2_07_gpio_input_pin>;
+ pinctrl-5 = <&P2_07_uart_pin>;
+ };
+
+ /* P2_08 (ZCZ ball U18) */
+ P2_08_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P2_08_default_pin>;
+ pinctrl-1 = <&P2_08_gpio_pin>;
+ pinctrl-2 = <&P2_08_gpio_pu_pin>;
+ pinctrl-3 = <&P2_08_gpio_pd_pin>;
+ pinctrl-4 = <&P2_08_gpio_input_pin>;
+ };
+
+ /* P2_09 (ZCZ ball D15) i2c */
+ P2_09_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "can", "i2c", "pru_uart", "pruin";
+ pinctrl-0 = <&P2_09_default_pin>;
+ pinctrl-1 = <&P2_09_gpio_pin>;
+ pinctrl-2 = <&P2_09_gpio_pu_pin>;
+ pinctrl-3 = <&P2_09_gpio_pd_pin>;
+ pinctrl-4 = <&P2_09_gpio_input_pin>;
+ pinctrl-5 = <&P2_09_uart_pin>;
+ pinctrl-6 = <&P2_09_can_pin>;
+ pinctrl-7 = <&P2_09_i2c_pin>;
+ pinctrl-8 = <&P2_09_pru_uart_pin>;
+ pinctrl-9 = <&P2_09_pruin_pin>;
+ };
+
+ /* P2_10 (ZCZ ball R14) */
+ P2_10_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep";
+ pinctrl-0 = <&P2_10_default_pin>;
+ pinctrl-1 = <&P2_10_gpio_pin>;
+ pinctrl-2 = <&P2_10_gpio_pu_pin>;
+ pinctrl-3 = <&P2_10_gpio_pd_pin>;
+ pinctrl-4 = <&P2_10_gpio_input_pin>;
+ pinctrl-5 = <&P2_10_qep_pin>;
+ };
+
+ /* P2_11 (ZCZ ball D16) i2c */
+ P2_11_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "can", "i2c", "pru_uart", "pruin";
+ pinctrl-0 = <&P2_11_default_pin>;
+ pinctrl-1 = <&P2_11_gpio_pin>;
+ pinctrl-2 = <&P2_11_gpio_pu_pin>;
+ pinctrl-3 = <&P2_11_gpio_pd_pin>;
+ pinctrl-4 = <&P2_11_gpio_input_pin>;
+ pinctrl-5 = <&P2_11_uart_pin>;
+ pinctrl-6 = <&P2_11_can_pin>;
+ pinctrl-7 = <&P2_11_i2c_pin>;
+ pinctrl-8 = <&P2_11_pru_uart_pin>;
+ pinctrl-9 = <&P2_11_pruin_pin>;
+ };
+
+ /* P2_12 POWER_BUTTON */
+
+ /* P2_13 VOUT-5V */
+
+ /* P2_14 BAT-VIN */
+
+ /* P2_15 GND */
+
+ /* P2_16 BAT-TEMP */
+
+ /* P2_17 (ZCZ ball V12) */
+ P2_17_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P2_17_default_pin>;
+ pinctrl-1 = <&P2_17_gpio_pin>;
+ pinctrl-2 = <&P2_17_gpio_pu_pin>;
+ pinctrl-3 = <&P2_17_gpio_pd_pin>;
+ pinctrl-4 = <&P2_17_gpio_input_pin>;
+ };
+
+ /* P2_18 (ZCZ ball U13) */
+ P2_18_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pru_ecap", "pruin";
+ pinctrl-0 = <&P2_18_default_pin>;
+ pinctrl-1 = <&P2_18_gpio_pin>;
+ pinctrl-2 = <&P2_18_gpio_pu_pin>;
+ pinctrl-3 = <&P2_18_gpio_pd_pin>;
+ pinctrl-4 = <&P2_18_gpio_input_pin>;
+ pinctrl-5 = <&P2_18_qep_pin>;
+ pinctrl-6 = <&P2_18_pru_ecap_pin>;
+ pinctrl-7 = <&P2_18_pruin_pin>;
+ };
+
+ /* P2_19 (ZCZ ball U12) */
+ P2_19_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+ pinctrl-0 = <&P2_19_default_pin>;
+ pinctrl-1 = <&P2_19_gpio_pin>;
+ pinctrl-2 = <&P2_19_gpio_pu_pin>;
+ pinctrl-3 = <&P2_19_gpio_pd_pin>;
+ pinctrl-4 = <&P2_19_gpio_input_pin>;
+ pinctrl-5 = <&P2_19_pwm_pin>;
+ };
+
+ /* P2_20 (ZCZ ball T13) */
+ P2_20_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+ pinctrl-0 = <&P2_20_default_pin>;
+ pinctrl-1 = <&P2_20_gpio_pin>;
+ pinctrl-2 = <&P2_20_gpio_pu_pin>;
+ pinctrl-3 = <&P2_20_gpio_pd_pin>;
+ pinctrl-4 = <&P2_20_gpio_input_pin>;
+ };
+
+ /* P2_21 GND */
+
+ /* P2_22 (ZCZ ball V13) */
+ P2_22_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruin";
+ pinctrl-0 = <&P2_22_default_pin>;
+ pinctrl-1 = <&P2_22_gpio_pin>;
+ pinctrl-2 = <&P2_22_gpio_pu_pin>;
+ pinctrl-3 = <&P2_22_gpio_pd_pin>;
+ pinctrl-4 = <&P2_22_gpio_input_pin>;
+ pinctrl-5 = <&P2_22_qep_pin>;
+ pinctrl-6 = <&P2_22_pruin_pin>;
+ };
+
+ /* P2_23 VOUT-3.3V */
+
+ /* P2_24 (ZCZ ball T12) */
+ P2_24_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout";
+ pinctrl-0 = <&P2_24_default_pin>;
+ pinctrl-1 = <&P2_24_gpio_pin>;
+ pinctrl-2 = <&P2_24_gpio_pu_pin>;
+ pinctrl-3 = <&P2_24_gpio_pd_pin>;
+ pinctrl-4 = <&P2_24_gpio_input_pin>;
+ pinctrl-5 = <&P2_24_qep_pin>;
+ pinctrl-6 = <&P2_24_pruout_pin>;
+ };
+
+ /* P2_25 (ZCZ ball E17) spi */
+ P2_25_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "spi_cs", "uart", "can", "i2c";
+ pinctrl-0 = <&P2_25_default_pin>;
+ pinctrl-1 = <&P2_25_gpio_pin>;
+ pinctrl-2 = <&P2_25_gpio_pu_pin>;
+ pinctrl-3 = <&P2_25_gpio_pd_pin>;
+ pinctrl-4 = <&P2_25_gpio_input_pin>;
+ pinctrl-5 = <&P2_25_spi_pin>;
+ pinctrl-6 = <&P2_25_spi_cs_pin>;
+ pinctrl-7 = <&P2_25_uart_pin>;
+ pinctrl-8 = <&P2_25_can_pin>;
+ pinctrl-9 = <&P2_25_i2c_pin>;
+ };
+
+ /* P2_26 RESET# */
+
+ /* P2_27 (ZCZ ball E18) spi */
+ P2_27_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "uart", "can", "i2c";
+ pinctrl-0 = <&P2_27_default_pin>;
+ pinctrl-1 = <&P2_27_gpio_pin>;
+ pinctrl-2 = <&P2_27_gpio_pu_pin>;
+ pinctrl-3 = <&P2_27_gpio_pd_pin>;
+ pinctrl-4 = <&P2_27_gpio_input_pin>;
+ pinctrl-5 = <&P2_27_spi_pin>;
+ pinctrl-6 = <&P2_27_uart_pin>;
+ pinctrl-7 = <&P2_27_can_pin>;
+ pinctrl-8 = <&P2_27_i2c_pin>;
+ };
+
+ /* P2_28 (ZCZ ball D13) pruin */
+ P2_28_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P2_28_default_pin>;
+ pinctrl-1 = <&P2_28_gpio_pin>;
+ pinctrl-2 = <&P2_28_gpio_pu_pin>;
+ pinctrl-3 = <&P2_28_gpio_pd_pin>;
+ pinctrl-4 = <&P2_28_gpio_input_pin>;
+ pinctrl-5 = <&P2_28_qep_pin>;
+ pinctrl-6 = <&P2_28_pruout_pin>;
+ pinctrl-7 = <&P2_28_pruin_pin>;
+ };
+
+ /* P2_29 (ZCZ ball C18) spi_sclk */
+ P2_29_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "spi_sclk", "uart", "pwm", "pru_ecap";
+ pinctrl-0 = <&P2_29_default_pin>;
+ pinctrl-1 = <&P2_29_gpio_pin>;
+ pinctrl-2 = <&P2_29_gpio_pu_pin>;
+ pinctrl-3 = <&P2_29_gpio_pd_pin>;
+ pinctrl-4 = <&P2_29_gpio_input_pin>;
+ pinctrl-5 = <&P2_29_spi_cs_pin>;
+ pinctrl-6 = <&P2_29_spi_sclk_pin>;
+ pinctrl-7 = <&P2_29_uart_pin>;
+ pinctrl-8 = <&P2_29_pwm_pin>;
+ pinctrl-9 = <&P2_29_pru_ecap_pin>;
+ };
+
+ /* P2_30 (ZCZ ball C12) pruin */
+ P2_30_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P2_30_default_pin>;
+ pinctrl-1 = <&P2_30_gpio_pin>;
+ pinctrl-2 = <&P2_30_gpio_pu_pin>;
+ pinctrl-3 = <&P2_30_gpio_pd_pin>;
+ pinctrl-4 = <&P2_30_gpio_input_pin>;
+ pinctrl-5 = <&P2_30_spi_cs_pin>;
+ pinctrl-6 = <&P2_30_pwm_pin>;
+ pinctrl-7 = <&P2_30_pruout_pin>;
+ pinctrl-8 = <&P2_30_pruin_pin>;
+ };
+
+ /* P2_31 (ZCZ ball A15) spi_cs */
+ P2_31_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "pruin";
+ pinctrl-0 = <&P2_31_default_pin>;
+ pinctrl-1 = <&P2_31_gpio_pin>;
+ pinctrl-2 = <&P2_31_gpio_pu_pin>;
+ pinctrl-3 = <&P2_31_gpio_pd_pin>;
+ pinctrl-4 = <&P2_31_gpio_input_pin>;
+ pinctrl-5 = <&P2_31_spi_cs_pin>;
+ pinctrl-6 = <&P2_31_pruin_pin>;
+ };
+
+ /* P2_32 (ZCZ ball D12) pruin */
+ P2_32_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "pwm", "pruout", "pruin";
+ pinctrl-0 = <&P2_32_default_pin>;
+ pinctrl-1 = <&P2_32_gpio_pin>;
+ pinctrl-2 = <&P2_32_gpio_pu_pin>;
+ pinctrl-3 = <&P2_32_gpio_pd_pin>;
+ pinctrl-4 = <&P2_32_gpio_input_pin>;
+ pinctrl-5 = <&P2_32_spi_pin>;
+ pinctrl-6 = <&P2_32_pwm_pin>;
+ pinctrl-7 = <&P2_32_pruout_pin>;
+ pinctrl-8 = <&P2_32_pruin_pin>;
+ };
+
+ /* P2_33 (ZCZ ball R12) */
+ P2_33_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout";
+ pinctrl-0 = <&P2_33_default_pin>;
+ pinctrl-1 = <&P2_33_gpio_pin>;
+ pinctrl-2 = <&P2_33_gpio_pu_pin>;
+ pinctrl-3 = <&P2_33_gpio_pd_pin>;
+ pinctrl-4 = <&P2_33_gpio_input_pin>;
+ pinctrl-5 = <&P2_33_qep_pin>;
+ pinctrl-6 = <&P2_33_pruout_pin>;
+ };
+
+ /* P2_34 (ZCZ ball C13) pruin */
+ P2_34_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+ pinctrl-0 = <&P2_34_default_pin>;
+ pinctrl-1 = <&P2_34_gpio_pin>;
+ pinctrl-2 = <&P2_34_gpio_pu_pin>;
+ pinctrl-3 = <&P2_34_gpio_pd_pin>;
+ pinctrl-4 = <&P2_34_gpio_input_pin>;
+ pinctrl-5 = <&P2_34_qep_pin>;
+ pinctrl-6 = <&P2_34_pruout_pin>;
+ pinctrl-7 = <&P2_34_pruin_pin>;
+ };
+
+ /* P2_35 (ZCZ ball U5) gpio_input */
+ P2_35_pinmux {
+ compatible = "bone-pinmux-helper";
+ status = "okay";
+ pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+ pinctrl-0 = <&P2_35_default_pin>;
+ pinctrl-1 = <&P2_35_gpio_pin>;
+ pinctrl-2 = <&P2_35_gpio_pu_pin>;
+ pinctrl-3 = <&P2_35_gpio_pd_pin>;
+ pinctrl-4 = <&P2_35_gpio_input_pin>;
+ pinctrl-5 = <&P2_35_pruout_pin>;
+ pinctrl-6 = <&P2_35_pruin_pin>;
+ };
+
+ /* P2_36 (ZCZ ball C9) AIN7 */
+
+ cape-universal {
+ compatible = "gpio-of-helper";
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ P1_02 {
+ gpio-name = "P1_02";
+ gpio = <&gpio2 23 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_04 {
+ gpio-name = "P1_04";
+ gpio = <&gpio2 25 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_06 {
+ gpio-name = "P1_06";
+ gpio = <&gpio0 5 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_08 {
+ gpio-name = "P1_08";
+ gpio = <&gpio0 2 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_10 {
+ gpio-name = "P1_10";
+ gpio = <&gpio0 3 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_12 {
+ gpio-name = "P1_12";
+ gpio = <&gpio0 4 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_20 {
+ gpio-name = "P1_20";
+ gpio = <&gpio0 20 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_26 {
+ gpio-name = "P1_26";
+ gpio = <&gpio0 12 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_28 {
+ gpio-name = "P1_28";
+ gpio = <&gpio0 13 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_29 {
+ gpio-name = "P1_29";
+ gpio = <&gpio3 21 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_30 {
+ gpio-name = "P1_30";
+ gpio = <&gpio1 11 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_31 {
+ gpio-name = "P1_31";
+ gpio = <&gpio3 18 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_32 {
+ gpio-name = "P1_32";
+ gpio = <&gpio1 10 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_33 {
+ gpio-name = "P1_33";
+ gpio = <&gpio3 15 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_34 {
+ gpio-name = "P1_34";
+ gpio = <&gpio0 26 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_35 {
+ gpio-name = "P1_35";
+ gpio = <&gpio2 24 0>;
+ input;
+ dir-changeable;
+ };
+
+ P1_36 {
+ gpio-name = "P1_36";
+ gpio = <&gpio3 14 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_01 {
+ gpio-name = "P2_01";
+ gpio = <&gpio1 18 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_02 {
+ gpio-name = "P2_02";
+ gpio = <&gpio1 27 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_03 {
+ gpio-name = "P2_03";
+ gpio = <&gpio0 23 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_04 {
+ gpio-name = "P2_04";
+ gpio = <&gpio1 26 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_05 {
+ gpio-name = "P2_05";
+ gpio = <&gpio0 30 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_06 {
+ gpio-name = "P2_06";
+ gpio = <&gpio1 25 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_07 {
+ gpio-name = "P2_07";
+ gpio = <&gpio0 31 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_08 {
+ gpio-name = "P2_08";
+ gpio = <&gpio1 28 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_09 {
+ gpio-name = "P2_09";
+ gpio = <&gpio0 15 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_10 {
+ gpio-name = "P2_10";
+ gpio = <&gpio1 20 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_11 {
+ gpio-name = "P2_11";
+ gpio = <&gpio0 14 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_17 {
+ gpio-name = "P2_17";
+ gpio = <&gpio2 1 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_18 {
+ gpio-name = "P2_18";
+ gpio = <&gpio1 15 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_19 {
+ gpio-name = "P2_19";
+ gpio = <&gpio0 27 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_20 {
+ gpio-name = "P2_20";
+ gpio = <&gpio2 0 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_22 {
+ gpio-name = "P2_22";
+ gpio = <&gpio1 14 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_24 {
+ gpio-name = "P2_24";
+ gpio = <&gpio1 12 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_25 {
+ gpio-name = "P2_25";
+ gpio = <&gpio1 9 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_27 {
+ gpio-name = "P2_27";
+ gpio = <&gpio1 8 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_28 {
+ gpio-name = "P2_28";
+ gpio = <&gpio3 20 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_29 {
+ gpio-name = "P2_29";
+ gpio = <&gpio0 7 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_30 {
+ gpio-name = "P2_30";
+ gpio = <&gpio3 17 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_31 {
+ gpio-name = "P2_31";
+ gpio = <&gpio0 19 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_32 {
+ gpio-name = "P2_32";
+ gpio = <&gpio3 16 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_33 {
+ gpio-name = "P2_33";
+ gpio = <&gpio1 13 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_34 {
+ gpio-name = "P2_34";
+ gpio = <&gpio3 19 0>;
+ input;
+ dir-changeable;
+ };
+
+ P2_35 {
+ gpio-name = "P2_35";
+ gpio = <&gpio2 22 0>;
+ input;
+ dir-changeable;
+ };
+
+ };
+};
diff --git a/arch/arm/boot/dts/am335x-sancloud-bbe.dts b/arch/arm/boot/dts/am335x-sancloud-bbe.dts
index 8678e6e354..2381a5c511 100644
--- a/arch/arm/boot/dts/am335x-sancloud-bbe.dts
+++ b/arch/arm/boot/dts/am335x-sancloud-bbe.dts
@@ -12,6 +12,11 @@
/ {
model = "SanCloud BeagleBone Enhanced";
compatible = "sancloud,am335x-boneenhanced", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+ chosen {
+ base_dtb = "am335x-sancloud-bbe.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
};
&am33xx_pinmux {
diff --git a/arch/arm/boot/dts/am33xx-l4.dtsi b/arch/arm/boot/dts/am33xx-l4.dtsi
index 46849d6ecb..7ba792f721 100644
--- a/arch/arm/boot/dts/am33xx-l4.dtsi
+++ b/arch/arm/boot/dts/am33xx-l4.dtsi
@@ -158,6 +158,39 @@
#interrupt-cells = <2>;
reg = <0x0 0x1000>;
interrupts = <96>;
+ gpio-line-names =
+ "MDIO_DATA", // 0
+ "MDIO_CLK", // 1
+ "SPI0_SCLK", // 2
+ "SPI0_D0", // 3
+ "SPI0_D1", // 4
+ "SPI0_CS0", // 5
+ "SPI0_CS1", // 6
+ "ECAP0_IN_PWM0_OUT", // 7
+ "LCD_DATA12", // 8
+ "LCD_DATA13", // 9
+ "LCD_DATA14", // 10
+ "LCD_DATA15", // 11
+ "UART1_CTSN", // 12
+ "UART1_RTSN", // 13
+ "UART1_RXD", // 14
+ "UART1_TXD", // 15
+ "GMII1_TXD3", // 16
+ "GMII1_TXD2", // 17
+ "USB0_DRVVBUS", // 18
+ "XDMA_EVENT_INTR0", // 19
+ "XDMA_EVENT_INTR1", // 20
+ "GMII1_TXD1", // 21
+ "GPMC_AD8", // 22
+ "GPMC_AD9", // 23
+ "NC", // 24
+ "NC", // 25
+ "GPMC_AD10", // 26
+ "GPMC_AD11", // 27
+ "GMII1_TXD0", // 28
+ "RMII1_REFCLK", // 29
+ "GPMC_WAIT0", // 30
+ "GPMC_WPN"; // 31
};
};
@@ -1299,6 +1332,39 @@
#interrupt-cells = <2>;
reg = <0x0 0x1000>;
interrupts = <98>;
+ gpio-line-names =
+ "GPMC_AD0", // 0
+ "GPMC_AD1", // 1
+ "GPMC_AD2", // 2
+ "GPMC_AD3", // 3
+ "GPMC_AD4", // 4
+ "GPMC_AD5", // 5
+ "GPMC_AD6", // 6
+ "GPMC_AD7", // 7
+ "UART0_CTSN", // 8
+ "UART0_RTSN", // 9
+ "UART0_RXD", // 10
+ "UART0_TXD", // 11
+ "GPMC_AD12", // 12
+ "GPMC_AD13", // 13
+ "GPMC_AD14", // 14
+ "GPMC_AD15", // 15
+ "GPMC_A0", // 16
+ "GPMC_A1", // 17
+ "GPMC_A2", // 18
+ "GPMC_A3", // 19
+ "GPMC_A4", // 20
+ "GPMC_A5", // 21
+ "GPMC_A6", // 22
+ "GPMC_A7", // 23
+ "GPMC_A8", // 24
+ "GPMC_A9", // 25
+ "GPMC_A10", // 26
+ "GPMC_A11", // 27
+ "GPMC_BE1N", // 28
+ "GPMC_CSN0", // 29
+ "GPMC_CSN1", // 30
+ "GPMC_CSN2"; // 31
};
};
@@ -1711,6 +1777,39 @@
#interrupt-cells = <2>;
reg = <0x0 0x1000>;
interrupts = <32>;
+ gpio-line-names =
+ "GPMC_CSN3", // 0
+ "GPMC_CLK", // 1
+ "GPMC_ADVN_ALE", // 2
+ "GPMC_OEN_REN", // 3
+ "GPMC_WEN", // 4
+ "GPMC_BE0N_CLE", // 5
+ "LCD_DATA0", // 6
+ "LCD_DATA1", // 7
+ "LCD_DATA2", // 8
+ "LCD_DATA3", // 9
+ "LCD_DATA4", // 10
+ "LCD_DATA5", // 11
+ "LCD_DATA6", // 12
+ "LCD_DATA7", // 13
+ "LCD_DATA8", // 14
+ "LCD_DATA9", // 15
+ "LCD_DATA10", // 16
+ "LCD_DATA11", // 17
+ "GMII1_RXD3", // 18
+ "GMII1_RXD2", // 19
+ "GMII1_RXD1", // 20
+ "GMII1_RXD0", // 21
+ "LCD_VSYNC", // 22
+ "LCD_HSYNC", // 23
+ "LCD_PCLK", // 24
+ "LCD_AC_BIAS_EN", // 25
+ "MMC0_DAT3", // 26
+ "MMC0_DAT2", // 27
+ "MMC0_DAT1", // 28
+ "MMC0_DAT0", // 29
+ "MMC0_CLK", // 30
+ "MMC0_CMD"; // 31
};
};
@@ -1745,6 +1844,39 @@
#interrupt-cells = <2>;
reg = <0x0 0x1000>;
interrupts = <62>;
+ gpio-line-names =
+ "GMII1_COL", // 0
+ "GMII1_CRS", // 1
+ "GMII1_RXER", // 2
+ "GMII1_TXEN", // 3
+ "GMII1_RXDV", // 4
+ "I2C0_SDA", // 5
+ "I2C0_SCL", // 6
+ "EMU0", // 7
+ "EMU1", // 8
+ "GMII1_TXCLK", // 9
+ "GMII1_RXCLK", // 10
+ "NC", // 11
+ "NC", // 12
+ "USB1_DRVVBUS", // 13
+ "MCASP0_ACLKX", // 14
+ "MCASP0_FSX", // 15
+ "MCASP0_AXR0", // 16
+ "MCASP0_AHCLKR", // 17
+ "MCASP0_ACLKR", // 18
+ "MCASP0_FSR", // 19
+ "MCASP0_AXR1", // 20
+ "MCASP0_AHCLKX", // 21
+ "NC", // 22
+ "NC", // 23
+ "NC", // 24
+ "NC", // 25
+ "NC", // 26
+ "NC", // 27
+ "NC", // 28
+ "NC", // 29
+ "NC", // 30
+ "NC"; // 31
};
};
@@ -1914,6 +2046,16 @@
status = "disabled";
};
+ eqep0: eqep@180 {
+ compatible = "ti,am33xx-eqep";
+ reg = <0x180 0x80>;
+ clocks = <&l4ls_gclk>;
+ clock-names = "fck";
+ interrupts = <79>;
+ interrupt-names = "eqep0";
+ status = "disabled";
+ };
+
ehrpwm0: pwm@200 {
compatible = "ti,am3352-ehrpwm",
"ti,am33xx-ehrpwm";
@@ -1967,6 +2109,16 @@
status = "disabled";
};
+ eqep1: eqep@180 {
+ compatible = "ti,am33xx-eqep";
+ reg = <0x180 0x80>;
+ clocks = <&l4ls_gclk>;
+ clock-names = "fck";
+ interrupts = <88>;
+ interrupt-names = "eqep1";
+ status = "disabled";
+ };
+
ehrpwm1: pwm@200 {
compatible = "ti,am3352-ehrpwm",
"ti,am33xx-ehrpwm";
@@ -2020,6 +2172,16 @@
status = "disabled";
};
+ eqep2: eqep@180 {
+ compatible = "ti,am33xx-eqep";
+ reg = <0x180 0x80>;
+ clocks = <&l4ls_gclk>;
+ clock-names = "fck";
+ interrupts = <89>;
+ interrupt-names = "eqep2";
+ status = "disabled";
+ };
+
ehrpwm2: pwm@200 {
compatible = "ti,am3352-ehrpwm",
"ti,am33xx-ehrpwm";
diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index 37e297b72c..2ca4f0c2a6 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -160,7 +160,7 @@
* for the moment, just use a fake OCP bus entry to represent
* the whole bus hierarchy.
*/
- ocp {
+ ocp: ocp {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
diff --git a/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi b/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi
index bc76f1705c..d5c56a111d 100644
--- a/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi
+++ b/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi
@@ -164,6 +164,10 @@
};
};
+&bb2d {
+ status = "okay";
+};
+
&i2c1 {
status = "okay";
clock-frequency = <400000>;
diff --git a/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts b/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts
index 7b113b52c3..062ff4806e 100644
--- a/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts
+++ b/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts
@@ -7,6 +7,11 @@
/ {
model = "TI AM5728 BeagleBoard-X15 rev B1";
+
+ chosen {
+ base_dtb = "am57xx-beagle-x15-revb1.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
};
&tpd12s015 {
diff --git a/arch/arm/boot/dts/am57xx-beagle-x15-revc.dts b/arch/arm/boot/dts/am57xx-beagle-x15-revc.dts
index 30c500b15b..4ad6551c90 100644
--- a/arch/arm/boot/dts/am57xx-beagle-x15-revc.dts
+++ b/arch/arm/boot/dts/am57xx-beagle-x15-revc.dts
@@ -7,6 +7,11 @@
/ {
model = "TI AM5728 BeagleBoard-X15 rev C";
+
+ chosen {
+ base_dtb = "am57xx-beagle-x15-revc.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
};
&tpd12s015 {
diff --git a/arch/arm/boot/dts/am57xx-beagle-x15.dts b/arch/arm/boot/dts/am57xx-beagle-x15.dts
index a5c24ed4d1..dbda396f92 100644
--- a/arch/arm/boot/dts/am57xx-beagle-x15.dts
+++ b/arch/arm/boot/dts/am57xx-beagle-x15.dts
@@ -8,6 +8,11 @@
/ {
/* NOTE: This describes the "original" pre-production A2 revision */
model = "TI AM5728 BeagleBoard-X15";
+
+ chosen {
+ base_dtb = "am57xx-beagle-x15.dts";
+ base_dtb_timestamp = __TIMESTAMP__;
+ };
};
&tpd12s015 {
diff --git a/arch/arm/boot/dts/armada-370-smileplug.dts b/arch/arm/boot/dts/armada-370-smileplug.dts
new file mode 100644
index 0000000000..d01308ab84
--- /dev/null
+++ b/arch/arm/boot/dts/armada-370-smileplug.dts
@@ -0,0 +1,173 @@
+/*
+ * Device Tree file for Marvell SMILE Plug
+ *
+ * Kevin Mihelich <kevin@archlinuxarm.org>
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+/dts-v1/;
+#include <dt-bindings/gpio/gpio.h>
+#include "armada-370.dtsi"
+
+/ {
+ model = "Marvell SMILE Plug";
+ compatible = "marvell,smileplug", "marvell,armada370", "marvell,armada-370-xp";
+
+ chosen {
+ bootargs = "console=ttyS0,115200 earlyprintk";
+ };
+
+ memory {
+ device_type = "memory";
+ reg = <0x00000000 0x20000000>; /* 512 MB */
+ };
+
+ soc {
+ ranges = <MBUS_ID(0xf0, 0x01) 0 0xd0000000 0x100000
+ MBUS_ID(0x01, 0xe0) 0 0xfff00000 0x100000>;
+
+ pcie-controller {
+ status = "okay";
+
+ /* Internal mini-PCIe connector */
+ pcie@1,0 {
+ /* Port 0, Lane 0 */
+ status = "okay";
+ };
+
+ /* Connected on the PCB to a USB 3.0 XHCI controller */
+ pcie@2,0 {
+ /* Port 1, Lane 0 */
+ status = "okay";
+ };
+ };
+
+ internal-regs {
+ serial@12000 {
+ status = "okay";
+ };
+ timer@20300 {
+ clock-frequency = <600000000>;
+ status = "okay";
+ };
+
+ gpio_leds {
+ compatible = "gpio-leds";
+ pinctrl-names = "default";
+ pinctrl-0 = <&smile_led_pins>;
+
+ red_eyes_led {
+ label = "smileplug:red:eyes";
+ gpios = <&gpio1 31 0>;
+ default-state = "off";
+ };
+
+ green_eyes_led {
+ label = "smileplug:green:eyes";
+ gpios = <&gpio2 0 0>;
+ linux,default-trigger = "default-on";
+ };
+
+ red_smile_led {
+ label = "smileplug:red:smile";
+ gpios = <&gpio1 15 0>;
+ default-state = "off";
+ };
+
+ green_smile_led {
+ label = "smileplug:green:smile";
+ gpios = <&gpio1 27 0>;
+ linux,default-trigger = "default-on";
+ };
+ };
+
+ mdio {
+ pinctrl-0 = <&mdio_pins>;
+ pinctrl-names = "default";
+ phy0: ethernet-phy@0 {
+ reg = <0>;
+ };
+
+ phy1: ethernet-phy@1 {
+ reg = <1>;
+ };
+ };
+ ethernet@70000 {
+ pinctrl-0 = <&ge0_rgmii_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+ phy = <&phy0>;
+ phy-mode = "rgmii-id";
+ };
+ ethernet@74000 {
+ pinctrl-0 = <&ge1_rgmii_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+ phy = <&phy1>;
+ phy-mode = "rgmii-id";
+ };
+
+ mvsdio@d4000 {
+ pinctrl-0 = <&sdio_pins3>;
+ pinctrl-names = "default";
+ status = "okay";
+ /*
+ * No CD or WP GPIOs: SDIO interface used for
+ * Wifi/Bluetooth chip
+ */
+ broken-cd;
+ };
+
+ usb@50000 {
+ status = "okay";
+ };
+
+ usb@51000 {
+ status = "okay";
+ };
+
+ i2c@11000 {
+ status = "okay";
+ clock-frequency = <100000>;
+ pca9505: pca9505@25 {
+ compatible = "nxp,pca9505";
+ gpio-controller;
+ #gpio-cells = <2>;
+ reg = <0x25>;
+ };
+ };
+
+ nand@d0000 {
+ status = "okay";
+ num-cs = <1>;
+ marvell,nand-keep-config;
+ marvell,nand-enable-arbiter;
+ nand-on-flash-bbt;
+
+ partition@0 {
+ label = "U-Boot";
+ reg = <0 0x400000>;
+ };
+ partition@400000 {
+ label = "Linux";
+ reg = <0x400000 0x400000>;
+ };
+ partition@800000 {
+ label = "Filesystem";
+ reg = <0x800000 0x3f800000>;
+ };
+ };
+ };
+ };
+};
+
+&pinctrl {
+ smile_led_pins: smile-led-pins {
+ marvell,pins = "mpp63", "mpp64", "mpp47", "mpp59";
+ marvell,function = "gpio";
+ };
+};
diff --git a/arch/arm/boot/dts/dove-d3plug.dts b/arch/arm/boot/dts/dove-d3plug.dts
index 826026c28f..a4c9963e12 100644
--- a/arch/arm/boot/dts/dove-d3plug.dts
+++ b/arch/arm/boot/dts/dove-d3plug.dts
@@ -61,6 +61,13 @@
&uart0 { status = "okay"; };
&sata0 { status = "okay"; };
&i2c0 { status = "okay"; };
+&mdio { status = "okay"; };
+ð { status = "okay"; };
+
+ðphy {
+ compatible = "marvell,88e1310";
+ reg = <1>;
+};
/* Samsung M8G2F eMMC */
&sdio0 {
diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
index 953f0ffce2..05ebd38d54 100644
--- a/arch/arm/boot/dts/dra7.dtsi
+++ b/arch/arm/boot/dts/dra7.dtsi
@@ -377,6 +377,16 @@
ti,hwmods = "dmm";
};
+ bb2d: bb2d@59000000 {
+ compatible = "ti,dra7-bb2d","vivante,gc";
+ reg = <0x59000000 0x0700>;
+ interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
+ ti,hwmods = "bb2d";
+ clocks = <&dpll_core_h24x2_ck>;
+ clock-names = "fclk";
+ status = "disabled";
+ };
+
mmu0_dsp1: mmu@40d01000 {
compatible = "ti,dra7-dsp-iommu";
reg = <0x40d01000 0x100>;
diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
index ea55f377d1..a7bfc58bbc 100644
--- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
+++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
@@ -430,7 +430,7 @@
buck2_reg: BUCK2 {
regulator-name = "vdd_arm";
- regulator-min-microvolt = <900000>;
+ regulator-min-microvolt = <1100000>;
regulator-max-microvolt = <1350000>;
regulator-always-on;
regulator-boot-on;
diff --git a/arch/arm/boot/dts/imx6q-evi.dts b/arch/arm/boot/dts/imx6q-evi.dts
index c63f371ede..546d9d4e8c 100644
--- a/arch/arm/boot/dts/imx6q-evi.dts
+++ b/arch/arm/boot/dts/imx6q-evi.dts
@@ -55,18 +55,6 @@
reg = <0x10000000 0x40000000>;
};
- reg_usbh1_vbus: regulator-usbhubreset {
- compatible = "regulator-fixed";
- regulator-name = "usbh1_vbus";
- regulator-min-microvolt = <5000000>;
- regulator-max-microvolt = <5000000>;
- enable-active-high;
- startup-delay-us = <2>;
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_usbh1_hubreset>;
- gpio = <&gpio7 12 GPIO_ACTIVE_HIGH>;
- };
-
reg_usb_otg_vbus: regulator-usbotgvbus {
compatible = "regulator-fixed";
regulator-name = "usb_otg_vbus";
@@ -214,12 +202,18 @@
};
&usbh1 {
- vbus-supply = <®_usbh1_vbus>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usbh1>;
dr_mode = "host";
disable-over-current;
status = "okay";
+
+ usb2415host: hub@1 {
+ compatible = "usb424,2513";
+ reg = <1>;
+ reset-gpios = <&gpio7 12 GPIO_ACTIVE_LOW>;
+ reset-duration-us = <3000>;
+ };
};
&usbotg {
@@ -482,11 +476,6 @@
MX6QDL_PAD_GPIO_3__USB_H1_OC 0x1b0b0
/* usbh1_b OC */
MX6QDL_PAD_GPIO_0__GPIO1_IO00 0x1b0b0
- >;
- };
-
- pinctrl_usbh1_hubreset: usbh1hubresetgrp {
- fsl,pins = <
MX6QDL_PAD_GPIO_17__GPIO7_IO12 0x1b0b0
>;
};
diff --git a/arch/arm/boot/dts/imx6qdl-udoo.dtsi b/arch/arm/boot/dts/imx6qdl-udoo.dtsi
index 776bfc77f8..554f601eb7 100644
--- a/arch/arm/boot/dts/imx6qdl-udoo.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-udoo.dtsi
@@ -5,6 +5,8 @@
* Author: Fabio Estevam <fabio.estevam@freescale.com>
*/
+#include <dt-bindings/gpio/gpio.h>
+
/ {
aliases {
backlight = &backlight;
@@ -62,17 +64,6 @@
#address-cells = <1>;
#size-cells = <0>;
- reg_usb_h1_vbus: regulator@0 {
- compatible = "regulator-fixed";
- reg = <0>;
- regulator-name = "usb_h1_vbus";
- regulator-min-microvolt = <5000000>;
- regulator-max-microvolt = <5000000>;
- enable-active-high;
- startup-delay-us = <2>; /* USB2415 requires a POR of 1 us minimum */
- gpio = <&gpio7 12 0>;
- };
-
reg_panel: regulator@1 {
compatible = "regulator-fixed";
reg = <1>;
@@ -93,6 +84,17 @@
mux-int-port = <1>;
mux-ext-port = <6>;
};
+
+ udoo_ard: udoo_ard_manager {
+ compatible = "udoo,imx6q-udoo-ard";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_udooard>;
+ bossac-clk-gpio = <&gpio6 3 0>;
+ bossac-dat-gpio = <&gpio5 18 0>;
+ bossac-erase-gpio = <&gpio4 21 0>;
+ bossac-reset-gpio = <&gpio1 0 0>;
+ status = "okay";
+ };
};
&fec {
@@ -205,11 +207,20 @@
pinctrl_usbh: usbhgrp {
fsl,pins = <
- MX6QDL_PAD_GPIO_17__GPIO7_IO12 0x80000000
+ MX6QDL_PAD_GPIO_17__GPIO7_IO12 0x1b0b0
MX6QDL_PAD_NANDF_CS2__CCM_CLKO2 0x130b0
>;
};
+ pinctrl_udooard: udooardgrp {
+ fsl,pins = <
+ MX6QDL_PAD_DISP0_DAT0__GPIO4_IO21 0x80000000
+ MX6QDL_PAD_CSI0_DAT17__GPIO6_IO03 0x80000000
+ MX6QDL_PAD_CSI0_PIXCLK__GPIO5_IO18 0x80000000
+ MX6QDL_PAD_GPIO_0__GPIO1_IO00 0x80000000
+ >;
+ };
+
pinctrl_usdhc3: usdhc3grp {
fsl,pins = <
MX6QDL_PAD_SD3_CMD__SD3_CMD 0x17059
@@ -282,9 +293,16 @@
&usbh1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usbh>;
- vbus-supply = <®_usb_h1_vbus>;
- clocks = <&clks IMX6QDL_CLK_CKO>;
status = "okay";
+
+ usb2415: hub@1 {
+ compatible = "usb424,2514";
+ reg = <1>;
+
+ clocks = <&clks IMX6QDL_CLK_CKO>;
+ reset-gpios = <&gpio7 12 GPIO_ACTIVE_LOW>;
+ reset-duration-us = <3000>;
+ };
};
&usdhc3 {
diff --git a/arch/arm/boot/dts/imx6qdl-wandboard-revb1.dtsi b/arch/arm/boot/dts/imx6qdl-wandboard-revb1.dtsi
index e781a45785..68daf5570e 100644
--- a/arch/arm/boot/dts/imx6qdl-wandboard-revb1.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-wandboard-revb1.dtsi
@@ -6,6 +6,24 @@
#include "imx6qdl-wandboard.dtsi"
+/ {
+ rfkill {
+ compatible = "wand,imx6qdl-wandboard-rfkill";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ bluetooth-on = <&gpio3 13 0>;
+ bluetooth-wake = <&gpio3 14 0>;
+ bluetooth-host-wake = <&gpio3 15 0>;
+
+ wifi-ref-on = <&gpio2 29 0>;
+ wifi-rst-n = <&gpio5 2 0>;
+ wifi-reg-on = <&gpio1 26 0>;
+ wifi-host-wake = <&gpio1 29 0>;
+ wifi-wake = <&gpio1 30 0>;
+ };
+};
+
&iomuxc {
pinctrl-0 = <&pinctrl_hog>;
@@ -31,6 +49,5 @@
&usdhc2 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc2>;
- non-removable;
status = "okay";
};
diff --git a/arch/arm/boot/dts/imx6qdl-wandboard-revc1.dtsi b/arch/arm/boot/dts/imx6qdl-wandboard-revc1.dtsi
index 3874e74703..be5445d3fe 100644
--- a/arch/arm/boot/dts/imx6qdl-wandboard-revc1.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-wandboard-revc1.dtsi
@@ -6,6 +6,24 @@
#include "imx6qdl-wandboard.dtsi"
+/ {
+ rfkill {
+ compatible = "wand,imx6qdl-wandboard-rfkill";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ bluetooth-on = <&gpio5 21 0>;
+ bluetooth-wake = <&gpio5 30 0>;
+ bluetooth-host-wake = <&gpio5 20 0>;
+
+ wifi-ref-on = <&gpio5 31 0>; /* Wifi Power Enable */
+ wifi-rst-n = <&gpio6 0 0>; /* WIFI_ON reset */
+ wifi-reg-on = <&gpio1 26 0>; /* WL_REG_ON */
+ wifi-host-wake = <&gpio1 29 0>; /* WL_HOST_WAKE */
+ wifi-wake = <&gpio1 30 0>; /* WL_WAKE */
+ };
+};
+
&iomuxc {
pinctrl-0 = <&pinctrl_hog>;
diff --git a/arch/arm/boot/dts/imx6qdl-wandboard-revd1.dtsi b/arch/arm/boot/dts/imx6qdl-wandboard-revd1.dtsi
index 9390979688..d595f4e235 100644
--- a/arch/arm/boot/dts/imx6qdl-wandboard-revd1.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-wandboard-revd1.dtsi
@@ -7,6 +7,26 @@
#include "imx6qdl-wandboard.dtsi"
/ {
+ rfkill {
+ compatible = "wand,imx6qdl-wandboard-rfkill";
+ pinctrl-names = "default";
+ pinctrl-0 = <>;
+
+ bluetooth-on = <&gpio5 30 0>; /* BT_RST_N */
+ bluetooth-wake = <&gpio5 21 0>; /* BT_WAKE */
+ bluetooth-host-wake = <&gpio5 20 0>; /* BT_HOST_WAKE */
+
+ wifi-ref-on = <&gpio6 0 0>; /* WIFI_ON: M4: CSI0_DAT14 */
+ wifi-reg-on = <&gpio1 26 0>; /* WL_REG_ON: W22: ENET_RXD1 */
+ wifi-host-wake = <&gpio1 29 0>; /* WL_HOST_WAKE: W20: ENET_TXD1 */
+
+ //HACK: use un-populated pins for missing rfkill pins, dont want to fix the driver...
+ //GPIO6_IO17 - SD3_DAT7
+ //GPIO6_IO18 - SD3_DAT6
+ wifi-rst-n = <&gpio6 17 0>; /* NOT POPULATED */
+ wifi-wake = <&gpio6 18 0>; /* NOT POPULATED */
+ };
+
reg_eth_phy: regulator-eth-phy {
compatible = "regulator-fixed";
regulator-name = "ETH_PHY";
diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index bda3c8dbd8..112d57e882 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -988,6 +988,8 @@
usbh1: usb@2184200 {
compatible = "fsl,imx6q-usb", "fsl,imx27-usb";
+ #address-cells = <1>;
+ #size-cells = <0>;
reg = <0x02184200 0x200>;
interrupts = <0 40 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clks IMX6QDL_CLK_USBOH3>;
@@ -1002,6 +1004,8 @@
usbh2: usb@2184400 {
compatible = "fsl,imx6q-usb", "fsl,imx27-usb";
+ #address-cells = <1>;
+ #size-cells = <0>;
reg = <0x02184400 0x200>;
interrupts = <0 41 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clks IMX6QDL_CLK_USBOH3>;
@@ -1017,6 +1021,8 @@
usbh3: usb@2184600 {
compatible = "fsl,imx6q-usb", "fsl,imx27-usb";
+ #address-cells = <1>;
+ #size-cells = <0>;
reg = <0x02184600 0x200>;
interrupts = <0 42 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clks IMX6QDL_CLK_USBOH3>;
diff --git a/arch/arm/boot/dts/imx6ul-usbarmory.dts b/arch/arm/boot/dts/imx6ul-usbarmory.dts
new file mode 100644
index 0000000000..3936ef8a64
--- /dev/null
+++ b/arch/arm/boot/dts/imx6ul-usbarmory.dts
@@ -0,0 +1,255 @@
+/*
+ * USB armory Mk II device tree file
+ * https://inversepath.com/usbarmory
+ *
+ * Copyright (C) 2019, F-Secure Corporation
+ * Andrej Rosano <andrej.rosano@f-secure.com>
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ * a) This file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This file is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ * b) Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+
+#include "imx6ul.dtsi"
+
+/ {
+ model = "F-Secure USB armory Mk II";
+ compatible = "inversepath,imx6ul-usbarmory-mkII", "fsl,imx6ul";
+
+ chosen {
+ stdout-path = &uart2;
+ };
+
+ memory {
+ reg = <0x80000000 0x20000000>;
+ };
+
+ leds {
+ compatible = "gpio-leds";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_led>;
+
+ led-white {
+ label = "LED_WHITE";
+ gpios = <&gpio4 21 GPIO_ACTIVE_LOW>;
+ linux,default-trigger = "heartbeat";
+ };
+
+ led-blue {
+ label = "LED_BLUE";
+ gpios = <&gpio4 22 GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ regulators {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ reg_sd1_vmmc: sd1_regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "VSD_3V3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
+ };
+};
+
+&uart1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_bluetooth>;
+ uart-has-rtscts;
+ status = "okay";
+};
+
+&uart2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart2>;
+ status = "okay";
+};
+
+&usdhc1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc1>;
+ no-1-8-v;
+ keep-power-in-suspend;
+ wakeup-source;
+ status = "okay";
+};
+
+&usdhc2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc2>;
+ non-removable;
+ status = "okay";
+};
+
+&i2c1 {
+ pinctrl-0 = <&pinctrl_i2c1>;
+ status = "okay";
+};
+
+&iomuxc {
+ pinctrl_uart2: uart2grp {
+ fsl,pins = <
+ MX6UL_PAD_UART2_TX_DATA__UART2_DCE_TX 0x1b0b1
+ MX6UL_PAD_UART2_RX_DATA__UART2_DCE_RX 0x1b0b1
+ >;
+ };
+
+ pinctrl_bluetooth: uart1grp {
+ fsl,pins = <
+ MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX 0x1b0b0 /* BT_UART_TX */
+ MX6UL_PAD_UART1_RX_DATA__UART1_DCE_RX 0x1b0b0 /* BT_UART_RX */
+ MX6UL_PAD_UART1_CTS_B__UART1_DCE_CTS 0x1b0b0 /* BT_UART_CTS */
+ MX6UL_PAD_GPIO1_IO07__UART1_DCE_RTS 0x130b0 /* BT_UART_RTS */
+ MX6UL_PAD_UART3_TX_DATA__GPIO1_IO24 0x1f020 /* BT_UART_DSR */
+ MX6UL_PAD_UART3_RX_DATA__GPIO1_IO25 0x10020 /* BT_UART_DTR */
+ MX6UL_PAD_GPIO1_IO04__GPIO1_IO04 0x1f020 /* BT_SWDCLK */
+ MX6UL_PAD_GPIO1_IO05__GPIO1_IO05 0x1f020 /* BT_SWDIO */
+ MX6UL_PAD_GPIO1_IO09__GPIO1_IO09 0x1f020 /* BT_RESET */
+ MX6UL_PAD_UART3_RTS_B__GPIO1_IO27 0x1f020 /* BT_SWITCH_1 */
+ MX6UL_PAD_UART3_CTS_B__GPIO1_IO26 0x1f020 /* BT_SWITCH_2 */
+ >;
+ };
+
+ pinctrl_i2c1: i2c1grp {
+ fsl,pins = <
+ MX6UL_PAD_GPIO1_IO02__I2C1_SCL 0x4001b8b0
+ MX6UL_PAD_GPIO1_IO03__I2C1_SDA 0x4001b8b0
+ >;
+ };
+
+ pinctrl_led: ledgrp {
+ fsl,pins = <
+ MX6UL_PAD_CSI_DATA06__GPIO4_IO27 0x1f020
+ MX6UL_PAD_CSI_DATA07__GPIO4_IO28 0x1f020
+ >;
+ };
+
+ pinctrl_usdhc1: usdhc1grp {
+ fsl,pins = <
+ MX6UL_PAD_SD1_CMD__USDHC1_CMD 0x1f019
+ MX6UL_PAD_SD1_CLK__USDHC1_CLK 0x1f019
+ MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x1f019
+ MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x1f019
+ MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x1f019
+ MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x1f019
+ >;
+ };
+
+ pinctrl_usdhc2: usdhc2grp {
+ fsl,pins = <
+ MX6UL_PAD_NAND_RE_B__USDHC2_CLK 0x10071
+ MX6UL_PAD_NAND_WE_B__USDHC2_CMD 0x17059
+ MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x17059
+ MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x17059
+ MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x17059
+ MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x17059
+ MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x17059
+ MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x17059
+ MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x17059
+ MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x17059
+ >;
+ };
+};
+
+&aips2 {
+ crypto: caam@2140000 {
+ compatible = "fsl,imx6ul-caam", "fsl,sec-v4.0";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x2140000 0x3c000>;
+ ranges = <0 0x2140000 0x3c000>;
+ interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clks IMX6UL_CLK_CAAM_IPG>, <&clks IMX6UL_CLK_CAAM_ACLK>,
+ <&clks IMX6UL_CLK_CAAM_MEM>;
+ clock-names = "ipg", "aclk", "mem";
+
+ sec_jr0: jr0@1000 {
+ compatible = "fsl,sec-v4.0-job-ring";
+ reg = <0x1000 0x1000>;
+ interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ sec_jr1: jr1@2000 {
+ compatible = "fsl,sec-v4.0-job-ring";
+ reg = <0x2000 0x1000>;
+ interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
+ };
+ sec_jr2: jr2@3000 {
+ compatible = "fsl,sec-v4.0-job-ring";
+ reg = <0x3000 0x1000>;
+ interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;
+ };
+ };
+};
+
+/ {
+ soc {
+ caam_sm: caam-sm@00100000 {
+ compatible = "fsl,imx7d-caam-sm", "fsl,imx6q-caam-sm";
+ reg = <0x00100000 0x3fff>;
+ };
+
+ irq_sec_vio: caam_secvio {
+ compatible = "fsl,imx7d-caam-secvio", "fsl,imx6q-caam-secvio";
+ interrupts = <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
+ };
+ };
+
+ caam_keyblob: caam-keyblob {
+ compatible = "fsl,sec-v4.0-keyblob";
+ status = "okay";
+ };
+};
+
+&usbotg1 {
+ dr_mode = "otg";
+ disable-over-current;
+ tpl-support;
+ status = "okay";
+};
+
+&usbotg2 {
+ dr_mode = "host";
+ disable-over-current;
+ tpl-support;
+ status = "okay";
+};
diff --git a/arch/arm/boot/dts/imx6ull-usbarmory.dts b/arch/arm/boot/dts/imx6ull-usbarmory.dts
new file mode 100644
index 0000000000..85cf30bff5
--- /dev/null
+++ b/arch/arm/boot/dts/imx6ull-usbarmory.dts
@@ -0,0 +1,256 @@
+/*
+ * USB armory Mk II device tree file
+ * https://inversepath.com/usbarmory
+ *
+ * Copyright (C) 2019, F-Secure Corporation
+ * Andrej Rosano <andrej.rosano@f-secure.com>
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ * a) This file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This file is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ * b) Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+
+#include "imx6ul.dtsi"
+
+/ {
+ model = "F-Secure USB armory Mk II";
+ compatible = "inversepath,imx6ull-usbarmory-mkII", "fsl,imx6ull";
+
+ chosen {
+ stdout-path = &uart2;
+ };
+
+ memory {
+ reg = <0x80000000 0x20000000>;
+ };
+
+ leds {
+ compatible = "gpio-leds";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_led>;
+
+ led-white {
+ label = "LED_WHITE";
+ gpios = <&gpio4 21 GPIO_ACTIVE_LOW>;
+ linux,default-trigger = "heartbeat";
+ };
+
+ led-blue {
+ label = "LED_BLUE";
+ gpios = <&gpio4 22 GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ regulators {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ reg_sd1_vmmc: sd1_regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "VSD_3V3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
+ };
+};
+
+/* Delete CAAM node in AIPS-2 (i.MX6UL specific) */
+/delete-node/ &crypto;
+
+&cpu0 {
+ operating-points = <
+ /* kHz uV */
+ 900000 1275000
+ 792000 1225000
+ 528000 1175000
+ 396000 1025000
+ 198000 950000
+ >;
+ fsl,soc-operating-points = <
+ /* KHz uV */
+ 900000 1250000
+ 792000 1175000
+ 528000 1175000
+ 396000 1175000
+ 198000 1175000
+ >;
+};
+
+&uart1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_bluetooth>;
+ uart-has-rtscts;
+ status = "okay";
+};
+
+&uart2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart2>;
+ status = "okay";
+};
+
+&usdhc1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc1>;
+ no-1-8-v;
+ keep-power-in-suspend;
+ wakeup-source;
+ status = "okay";
+};
+
+&usdhc2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc2>;
+ non-removable;
+ status = "okay";
+};
+
+&i2c1 {
+ pinctrl-0 = <&pinctrl_i2c1>;
+ status = "okay";
+};
+
+&iomuxc {
+ pinctrl_uart2: uart2grp {
+ fsl,pins = <
+ MX6UL_PAD_UART2_TX_DATA__UART2_DCE_TX 0x1b0b1
+ MX6UL_PAD_UART2_RX_DATA__UART2_DCE_RX 0x1b0b1
+ >;
+ };
+
+ pinctrl_bluetooth: uart1grp {
+ fsl,pins = <
+ MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX 0x1b0b0 /* BT_UART_TX */
+ MX6UL_PAD_UART1_RX_DATA__UART1_DCE_RX 0x1b0b0 /* BT_UART_RX */
+ MX6UL_PAD_UART1_CTS_B__UART1_DCE_CTS 0x1b0b0 /* BT_UART_CTS */
+ MX6UL_PAD_GPIO1_IO07__UART1_DCE_RTS 0x130b0 /* BT_UART_RTS */
+ MX6UL_PAD_UART3_TX_DATA__GPIO1_IO24 0x1f020 /* BT_UART_DSR */
+ MX6UL_PAD_UART3_RX_DATA__GPIO1_IO25 0x10020 /* BT_UART_DTR */
+ MX6UL_PAD_GPIO1_IO04__GPIO1_IO04 0x1f020 /* BT_SWDCLK */
+ MX6UL_PAD_GPIO1_IO05__GPIO1_IO05 0x1f020 /* BT_SWDIO */
+ MX6UL_PAD_GPIO1_IO09__GPIO1_IO09 0x1f020 /* BT_RESET */
+ MX6UL_PAD_UART3_RTS_B__GPIO1_IO27 0x1f020 /* BT_SWITCH_1 */
+ MX6UL_PAD_UART3_CTS_B__GPIO1_IO26 0x1f020 /* BT_SWITCH_2 */
+ >;
+ };
+
+ pinctrl_i2c1: i2c1grp {
+ fsl,pins = <
+ MX6UL_PAD_GPIO1_IO02__I2C1_SCL 0x4001b8b0
+ MX6UL_PAD_GPIO1_IO03__I2C1_SDA 0x4001b8b0
+ >;
+ };
+
+ pinctrl_led: ledgrp {
+ fsl,pins = <
+ MX6UL_PAD_CSI_DATA06__GPIO4_IO27 0x1f020
+ MX6UL_PAD_CSI_DATA07__GPIO4_IO28 0x1f020
+ >;
+ };
+
+ pinctrl_usdhc1: usdhc1grp {
+ fsl,pins = <
+ MX6UL_PAD_SD1_CMD__USDHC1_CMD 0x1f019
+ MX6UL_PAD_SD1_CLK__USDHC1_CLK 0x1f019
+ MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x1f019
+ MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x1f019
+ MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x1f019
+ MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x1f019
+ >;
+ };
+
+ pinctrl_usdhc2: usdhc2grp {
+ fsl,pins = <
+ MX6UL_PAD_NAND_RE_B__USDHC2_CLK 0x10071
+ MX6UL_PAD_NAND_WE_B__USDHC2_CMD 0x17059
+ MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x17059
+ MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x17059
+ MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x17059
+ MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x17059
+ MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x17059
+ MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x17059
+ MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x17059
+ MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x17059
+ >;
+ };
+};
+
+/ {
+ soc {
+ aips3: aips-bus@02200000 {
+ compatible = "fsl,aips-bus", "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x02200000 0x100000>;
+ ranges;
+
+ dcp: dcp@02280000 {
+ compatible = "fsl,imx6ull-dcp", "fsl,imx6sl-dcp", "fsl,imx28-dcp";
+ reg = <0x02280000 0x4000>;
+ interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clks IMX6ULL_CLK_DCP_CLK>;
+ clock-names = "dcp";
+ };
+
+ rngb: rngb@02284000 {
+ compatible = "fsl,imx6sl-rng", "fsl,imx25-rngb", "fsl,imx-rng", "imx-rng";
+ reg = <0x02284000 0x4000>;
+ interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clks IMX6UL_CLK_DUMMY>;
+ };
+ };
+ };
+};
+
+&usbotg1 {
+ dr_mode = "peripheral";
+ disable-over-current;
+ tpl-support;
+ status = "okay";
+};
+
+&usbotg2 {
+ dr_mode = "host";
+ disable-over-current;
+ tpl-support;
+ status = "okay";
+};
diff --git a/arch/arm/boot/dts/imx7d-pico-pi.dts b/arch/arm/boot/dts/imx7d-pico-pi.dts
index 70bea95c06..a50edba80c 100644
--- a/arch/arm/boot/dts/imx7d-pico-pi.dts
+++ b/arch/arm/boot/dts/imx7d-pico-pi.dts
@@ -8,6 +8,10 @@
model = "TechNexion PICO-IMX7D Board and PI baseboard";
compatible = "technexion,imx7d-pico-pi", "fsl,imx7d";
+ chosen {
+ stdout-path = "serial4:115200n8";
+ };
+
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
index 1aa99fc148..28d5c07072 100644
--- a/arch/arm/boot/dts/omap3-beagle-xm.dts
+++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
@@ -152,6 +152,7 @@
};
etb@5401b000 {
+ status = "disabled";
compatible = "arm,coresight-etb10", "arm,primecell";
reg = <0x5401b000 0x1000>;
@@ -167,6 +168,7 @@
};
etm@54010000 {
+ status = "disabled";
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0x54010000 0x1000>;
@@ -214,6 +216,25 @@
>;
};
+ spi3_pins: pinmux_spi3_pins {
+ pinctrl-single,pins = <
+ OMAP3_CORE1_IOPAD(0x2128, PIN_INPUT | MUX_MODE1) /* sdmmc2_clk.mcspi3_clk gpio_130 */
+ OMAP3_CORE1_IOPAD(0x212a, PIN_OUTPUT | MUX_MODE1) /* sdmmc2_cmd.mcspi3_simo gpio_131 */
+ OMAP3_CORE1_IOPAD(0x212c, PIN_INPUT_PULLUP | MUX_MODE1) /* sdmmc2_dat0.mcspi3_somi gpio_132 */
+ OMAP3_CORE1_IOPAD(0x2130, PIN_OUTPUT | MUX_MODE1) /* sdmmc2_dat2.mcspi3_cs1 gpio_134 */
+ OMAP3_CORE1_IOPAD(0x2132, PIN_OUTPUT | MUX_MODE1) /* sdmmc2_dat3.mcspi3_cs0 gpio_135 */
+ >;
+ };
+
+ spi4_pins: pinmux_spi4_pins {
+ pinctrl-single,pins = <
+ OMAP3_CORE1_IOPAD(0x215c, PIN_INPUT | MUX_MODE1) /* mcbsp1_clkr.mcspi4_clk gpio_156 */
+ OMAP3_CORE1_IOPAD(0x2160, PIN_OUTPUT | MUX_MODE1) /* mcbsp1_dx.mcspi4_simo gpio_158 */
+ OMAP3_CORE1_IOPAD(0x2162, PIN_INPUT_PULLUP | MUX_MODE1) /* mcbsp1_dr.mcspi4_somi gpio_159 */
+ OMAP3_CORE1_IOPAD(0x2166, PIN_OUTPUT | MUX_MODE1) /* mcbsp1_fsx.mcspi4_cs0 gpio_161 */
+ >;
+ };
+
hsusb2_pins: pinmux_hsusb2_pins {
pinctrl-single,pins = <
OMAP3_CORE1_IOPAD(0x21d4, PIN_INPUT_PULLDOWN | MUX_MODE3) /* mcspi1_cs3.hsusb2_data2 */
@@ -291,7 +312,7 @@
};
twl_power: power {
- compatible = "ti,twl4030-power-beagleboard-xm", "ti,twl4030-power-idle-osc-off";
+ compatible = "ti,twl4030-power-reset";
ti,use_poweroff;
};
};
@@ -322,6 +343,36 @@
status = "disabled";
};
+&mcspi3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi3_pins>;
+ status = "okay";
+
+ spidev0: spi@0 {
+ compatible = "spidev";
+ reg = <0>;
+ spi-max-frequency = <48000000>;
+ };
+
+ spidev1: spi@1 {
+ compatible = "spidev";
+ reg = <1>;
+ spi-max-frequency = <48000000>;
+ };
+};
+
+&mcspi4 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi4_pins>;
+ status = "okay";
+
+ spidev2: spi@0 {
+ compatible = "spidev";
+ reg = <0>;
+ spi-max-frequency = <48000000>;
+ };
+};
+
&twl_gpio {
ti,use-leds;
/* pullups: BIT(1) */
diff --git a/arch/arm/boot/dts/omap3-beagle.dts b/arch/arm/boot/dts/omap3-beagle.dts
index e3df3c1669..64f0787d96 100644
--- a/arch/arm/boot/dts/omap3-beagle.dts
+++ b/arch/arm/boot/dts/omap3-beagle.dts
@@ -139,6 +139,7 @@
};
etb@540000000 {
+ status = "disabled";
compatible = "arm,coresight-etb10", "arm,primecell";
reg = <0x5401b000 0x1000>;
@@ -154,6 +155,7 @@
};
etm@54010000 {
+ status = "disabled";
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0x54010000 0x1000>;
@@ -272,9 +274,18 @@
codec {
};
};
+
+ twl_power: power {
+ compatible = "ti,twl4030-power-reset";
+ ti,use_poweroff;
+ };
};
};
+&i2c2 {
+ clock-frequency = <400000>;
+};
+
#include "twl4030.dtsi"
#include "twl4030_omap3.dtsi"
diff --git a/arch/arm/boot/dts/omap4-panda-a4.dts b/arch/arm/boot/dts/omap4-panda-a4.dts
index 64083075dd..065f3db3f2 100644
--- a/arch/arm/boot/dts/omap4-panda-a4.dts
+++ b/arch/arm/boot/dts/omap4-panda-a4.dts
@@ -7,6 +7,18 @@
#include "omap443x.dtsi"
#include "omap4-panda-common.dtsi"
+&emif1 {
+ cs1-used;
+ device-handle = <&elpida_ECB240ABACN>;
+ status = "ok";
+};
+
+&emif2 {
+ cs1-used;
+ device-handle = <&elpida_ECB240ABACN>;
+ status = "ok";
+};
+
/* Pandaboard Rev A4+ have external pullups on SCL & SDA */
&dss_hdmi_pins {
pinctrl-single,pins = <
diff --git a/arch/arm/boot/dts/omap4-panda-common.dtsi b/arch/arm/boot/dts/omap4-panda-common.dtsi
index 14be2ecb62..e5f842c122 100644
--- a/arch/arm/boot/dts/omap4-panda-common.dtsi
+++ b/arch/arm/boot/dts/omap4-panda-common.dtsi
@@ -481,16 +481,6 @@
};
};
-&emif1 {
- cs1-used;
- device-handle = <&elpida_ECB240ABACN>;
-};
-
-&emif2 {
- cs1-used;
- device-handle = <&elpida_ECB240ABACN>;
-};
-
&mcbsp1 {
pinctrl-names = "default";
pinctrl-0 = <&mcbsp1_pins>;
diff --git a/arch/arm/boot/dts/omap4-panda-es-b3.dts b/arch/arm/boot/dts/omap4-panda-es-b3.dts
new file mode 100644
index 0000000000..19d02df8d8
--- /dev/null
+++ b/arch/arm/boot/dts/omap4-panda-es-b3.dts
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+/dts-v1/;
+
+#include "omap4460.dtsi"
+#include "omap4-panda-common.dtsi"
+
+/ {
+ model = "TI OMAP4 PandaBoard-ES";
+ compatible = "ti,omap4-panda-es", "ti,omap4-panda", "ti,omap4460", "ti,omap4430", "ti,omap4";
+};
+
+/* Audio routing is differnet between PandaBoard4430 and PandaBoardES */
+&sound {
+ ti,model = "PandaBoardES";
+
+ /* Audio routing */
+ ti,audio-routing =
+ "Headset Stereophone", "HSOL",
+ "Headset Stereophone", "HSOR",
+ "Ext Spk", "HFL",
+ "Ext Spk", "HFR",
+ "Line Out", "AUXL",
+ "Line Out", "AUXR",
+ "AFML", "Line In",
+ "AFMR", "Line In";
+};
+
+/* PandaboardES has external pullups on SCL & SDA */
+&dss_hdmi_pins {
+ pinctrl-single,pins = <
+ OMAP4_IOPAD(0x09a, PIN_INPUT | MUX_MODE0) /* hdmi_cec.hdmi_cec */
+ OMAP4_IOPAD(0x09c, PIN_INPUT | MUX_MODE0) /* hdmi_scl.hdmi_scl */
+ OMAP4_IOPAD(0x09e, PIN_INPUT | MUX_MODE0) /* hdmi_sda.hdmi_sda */
+ >;
+};
+
+&omap4_pmx_core {
+ led_gpio_pins: gpio_led_pmx {
+ pinctrl-single,pins = <
+ OMAP4_IOPAD(0x0f6, PIN_OUTPUT | MUX_MODE3) /* gpio_110 */
+ >;
+ };
+
+ button_pins: pinmux_button_pins {
+ pinctrl-single,pins = <
+ OMAP4_IOPAD(0x11b, PIN_INPUT_PULLUP | MUX_MODE3) /* gpio_113 */
+ >;
+ };
+};
+
+&led_wkgpio_pins {
+ pinctrl-single,pins = <
+ OMAP4_IOPAD(0x05c, PIN_OUTPUT | MUX_MODE3) /* gpio_wk8 */
+ >;
+};
+
+&leds {
+ pinctrl-0 = <
+ &led_gpio_pins
+ &led_wkgpio_pins
+ >;
+
+ heartbeat {
+ gpios = <&gpio4 14 GPIO_ACTIVE_HIGH>;
+ };
+ mmc {
+ gpios = <&gpio1 8 GPIO_ACTIVE_HIGH>;
+ };
+};
+
+&gpio_keys {
+ buttonS2 {
+ gpios = <&gpio4 17 GPIO_ACTIVE_LOW>; /* gpio_113 */
+ };
+};
+
+&gpio1_target {
+ ti,no-reset-on-init;
+};
diff --git a/arch/arm/boot/dts/omap4-panda-es.dts b/arch/arm/boot/dts/omap4-panda-es.dts
index 9dd307b526..ea4dce2f3a 100644
--- a/arch/arm/boot/dts/omap4-panda-es.dts
+++ b/arch/arm/boot/dts/omap4-panda-es.dts
@@ -12,6 +12,18 @@
compatible = "ti,omap4-panda-es", "ti,omap4-panda", "ti,omap4460", "ti,omap4430", "ti,omap4";
};
+&emif1 {
+ cs1-used;
+ device-handle = <&elpida_ECB240ABACN>;
+ status = "ok";
+};
+
+&emif2 {
+ cs1-used;
+ device-handle = <&elpida_ECB240ABACN>;
+ status = "ok";
+};
+
/* Audio routing is differnet between PandaBoard4430 and PandaBoardES */
&sound {
ti,model = "PandaBoardES";
diff --git a/arch/arm/boot/dts/omap4-panda.dts b/arch/arm/boot/dts/omap4-panda.dts
index fb2f47717b..2ca852eadb 100644
--- a/arch/arm/boot/dts/omap4-panda.dts
+++ b/arch/arm/boot/dts/omap4-panda.dts
@@ -11,3 +11,15 @@
model = "TI OMAP4 PandaBoard";
compatible = "ti,omap4-panda", "ti,omap4430", "ti,omap4";
};
+
+&emif1 {
+ cs1-used;
+ device-handle = <&elpida_ECB240ABACN>;
+ status = "ok";
+};
+
+&emif2 {
+ cs1-used;
+ device-handle = <&elpida_ECB240ABACN>;
+ status = "ok";
+};
diff --git a/arch/arm/boot/dts/omap4-sdp.dts b/arch/arm/boot/dts/omap4-sdp.dts
index 3c274965ff..97001fefe8 100644
--- a/arch/arm/boot/dts/omap4-sdp.dts
+++ b/arch/arm/boot/dts/omap4-sdp.dts
@@ -521,11 +521,13 @@
&emif1 {
cs1-used;
device-handle = <&elpida_ECB240ABACN>;
+ status = "ok";
};
&emif2 {
cs1-used;
device-handle = <&elpida_ECB240ABACN>;
+ status = "ok";
};
&keypad {
diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi
index c43e52fd5f..ec51eaabb4 100644
--- a/arch/arm/boot/dts/omap4.dtsi
+++ b/arch/arm/boot/dts/omap4.dtsi
@@ -252,6 +252,7 @@
hw-caps-read-idle-ctrl;
hw-caps-ll-interface;
hw-caps-temp-alert;
+ status = "disabled";
};
emif2: emif@4d000000 {
@@ -264,6 +265,7 @@
hw-caps-read-idle-ctrl;
hw-caps-ll-interface;
hw-caps-temp-alert;
+ status = "disabled";
};
aes1: aes@4b501000 {
diff --git a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
index 99f531b8d2..534392a726 100644
--- a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
+++ b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
@@ -78,6 +78,7 @@
blue {
label = "cubietruck:blue:usr";
gpios = <&pio 7 21 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "heartbeat";
};
orange {
@@ -93,6 +94,7 @@
green {
label = "cubietruck:green:usr";
gpios = <&pio 7 7 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "mmc0";
};
};
diff --git a/arch/arm/boot/dts/twl6030.dtsi b/arch/arm/boot/dts/twl6030.dtsi
index 9d588cfaa5..c0094e0c4e 100644
--- a/arch/arm/boot/dts/twl6030.dtsi
+++ b/arch/arm/boot/dts/twl6030.dtsi
@@ -80,6 +80,11 @@
regulator-always-on;
};
+ clk32kg: regulator-clk32kg {
+ compatible = "ti,twl6030-clk32kg";
+ regulator-always-on;
+ };
+
twl_usb_comparator: usb-comparator {
compatible = "ti,twl6030-usb";
interrupts = <4>, <10>;
diff --git a/arch/arm/include/uapi/asm/setup.h b/arch/arm/include/uapi/asm/setup.h
index 25ceda63b2..83578c5497 100644
--- a/arch/arm/include/uapi/asm/setup.h
+++ b/arch/arm/include/uapi/asm/setup.h
@@ -144,6 +144,18 @@ struct tag_memclk {
__u32 fmemclk;
};
+/* Marvell uboot parameters */
+#define ATAG_MV_UBOOT 0x41000403
+struct tag_mv_uboot {
+ __u32 uboot_version;
+ __u32 tclk;
+ __u32 sysclk;
+ __u32 isUsbHost;
+ __u8 macAddr[4][6];
+ __u16 mtu[4];
+ __u32 nand_ecc;
+};
+
struct tag {
struct tag_header hdr;
union {
@@ -166,6 +178,11 @@ struct tag {
* DC21285 specific
*/
struct tag_memclk memclk;
+
+ /*
+ * Marvell specific
+ */
+ struct tag_mv_uboot mv_uboot;
} u;
};
diff --git a/arch/arm/mach-imx/devices/Kconfig b/arch/arm/mach-imx/devices/Kconfig
index fdca73d117..95e0e8ee5d 100644
--- a/arch/arm/mach-imx/devices/Kconfig
+++ b/arch/arm/mach-imx/devices/Kconfig
@@ -69,3 +69,9 @@ config IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX
config IMX_HAVE_PLATFORM_SPI_IMX
bool
+
+config WAND_RFKILL
+ tristate "Wandboard RF Kill support"
+ depends on SOC_IMX6Q
+ default m
+ select RFKILL
diff --git a/arch/arm/mach-imx/devices/Makefile b/arch/arm/mach-imx/devices/Makefile
index e44758aaa1..c179a55009 100644
--- a/arch/arm/mach-imx/devices/Makefile
+++ b/arch/arm/mach-imx/devices/Makefile
@@ -26,3 +26,4 @@ obj-$(CONFIG_IMX_HAVE_PLATFORM_MXC_W1) += platform-mxc_w1.o
obj-$(CONFIG_IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX) += platform-sdhci-esdhc-imx.o
obj-$(CONFIG_IMX_HAVE_PLATFORM_SPI_IMX) += platform-spi_imx.o
obj-$(CONFIG_IMX_HAVE_PLATFORM_MX2_EMMA) += platform-mx2-emma.o
+obj-$(CONFIG_WAND_RFKILL) += wand-rfkill.o
diff --git a/arch/arm/mach-imx/devices/wand-rfkill.c b/arch/arm/mach-imx/devices/wand-rfkill.c
new file mode 100644
index 0000000000..da7ef9f426
--- /dev/null
+++ b/arch/arm/mach-imx/devices/wand-rfkill.c
@@ -0,0 +1,290 @@
+/*
+ * arch/arm/mach-imx/devices/wand-rfkill.c
+ *
+ * Copyright (C) 2013 Vladimir Ermakov <vooon341@gmail.com>
+ *
+ * based on net/rfkill/rfkill-gpio.c
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/of_device.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/platform_device.h>
+#include <linux/rfkill.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+
+struct wand_rfkill_data {
+ struct rfkill *rfkill_dev;
+ int shutdown_gpio;
+ const char *shutdown_name;
+};
+
+static int wand_rfkill_set_block(void *data, bool blocked)
+{
+ struct wand_rfkill_data *rfkill = data;
+
+ pr_debug("wandboard-rfkill: set block %d\n", blocked);
+
+ if (blocked) {
+ if (gpio_is_valid(rfkill->shutdown_gpio))
+ gpio_direction_output(rfkill->shutdown_gpio, 0);
+ } else {
+ if (gpio_is_valid(rfkill->shutdown_gpio))
+ gpio_direction_output(rfkill->shutdown_gpio, 1);
+ }
+
+ return 0;
+}
+
+static const struct rfkill_ops wand_rfkill_ops = {
+ .set_block = wand_rfkill_set_block,
+};
+
+static int wand_rfkill_wifi_probe(struct device *dev,
+ struct device_node *np,
+ struct wand_rfkill_data *rfkill)
+{
+ int ret;
+ int wl_ref_on, wl_rst_n, wl_reg_on, wl_wake, wl_host_wake;
+
+ wl_ref_on = of_get_named_gpio(np, "wifi-ref-on", 0);
+ wl_rst_n = of_get_named_gpio(np, "wifi-rst-n", 0);
+ wl_reg_on = of_get_named_gpio(np, "wifi-reg-on", 0);
+ wl_wake = of_get_named_gpio(np, "wifi-wake", 0);
+ wl_host_wake = of_get_named_gpio(np, "wifi-host-wake", 0);
+
+ if (!gpio_is_valid(wl_rst_n) || !gpio_is_valid(wl_ref_on) ||
+ !gpio_is_valid(wl_reg_on) || !gpio_is_valid(wl_wake) ||
+ !gpio_is_valid(wl_host_wake)) {
+
+ dev_err(dev, "incorrect wifi gpios (%d %d %d %d %d)\n",
+ wl_rst_n, wl_ref_on, wl_reg_on, wl_wake, wl_host_wake);
+ return -EINVAL;
+ }
+
+ dev_info(dev, "initialize wifi chip\n");
+
+ gpio_request(wl_rst_n, "wl_rst_n");
+ gpio_direction_output(wl_rst_n, 0);
+ msleep(11);
+ gpio_set_value(wl_rst_n, 1);
+
+ gpio_request(wl_ref_on, "wl_ref_on");
+ gpio_direction_output(wl_ref_on, 1);
+
+ gpio_request(wl_reg_on, "wl_reg_on");
+ gpio_direction_output(wl_reg_on, 1);
+
+ gpio_request(wl_wake, "wl_wake");
+ gpio_direction_output(wl_wake, 1);
+
+ gpio_request(wl_host_wake, "wl_host_wake");
+ gpio_direction_input(wl_host_wake);
+
+ rfkill->shutdown_name = "wifi_shutdown";
+ rfkill->shutdown_gpio = wl_wake;
+
+ rfkill->rfkill_dev = rfkill_alloc("wifi-rfkill", dev, RFKILL_TYPE_WLAN,
+ &wand_rfkill_ops, rfkill);
+ if (!rfkill->rfkill_dev) {
+ ret = -ENOMEM;
+ goto wifi_fail_free_gpio;
+ }
+
+ ret = rfkill_register(rfkill->rfkill_dev);
+ if (ret < 0)
+ goto wifi_fail_unregister;
+
+ dev_info(dev, "wifi-rfkill registered.\n");
+
+ return 0;
+
+wifi_fail_unregister:
+ rfkill_destroy(rfkill->rfkill_dev);
+wifi_fail_free_gpio:
+ if (gpio_is_valid(wl_rst_n)) gpio_free(wl_rst_n);
+ if (gpio_is_valid(wl_ref_on)) gpio_free(wl_ref_on);
+ if (gpio_is_valid(wl_reg_on)) gpio_free(wl_reg_on);
+ if (gpio_is_valid(wl_wake)) gpio_free(wl_wake);
+ if (gpio_is_valid(wl_host_wake)) gpio_free(wl_host_wake);
+
+ return ret;
+}
+
+static int wand_rfkill_bt_probe(struct device *dev,
+ struct device_node *np,
+ struct wand_rfkill_data *rfkill)
+{
+ int ret;
+ int bt_on, bt_wake, bt_host_wake;
+
+ bt_on = of_get_named_gpio(np, "bluetooth-on", 0);
+ bt_wake = of_get_named_gpio(np, "bluetooth-wake", 0);
+ bt_host_wake = of_get_named_gpio(np, "bluetooth-host-wake", 0);
+
+ if (!gpio_is_valid(bt_on) || !gpio_is_valid(bt_wake) ||
+ !gpio_is_valid(bt_host_wake)) {
+
+ dev_err(dev, "incorrect bt gpios (%d %d %d)\n",
+ bt_on, bt_wake, bt_host_wake);
+ return -EINVAL;
+ }
+
+ dev_info(dev, "initialize bluetooth chip\n");
+
+ gpio_request(bt_on, "bt_on");
+ gpio_direction_output(bt_on, 0);
+ msleep(11);
+ gpio_set_value(bt_on, 1);
+
+ gpio_request(bt_wake, "bt_wake");
+ gpio_direction_output(bt_wake, 1);
+
+ gpio_request(bt_host_wake, "bt_host_wake");
+ gpio_direction_input(bt_host_wake);
+
+ rfkill->shutdown_name = "bluetooth_shutdown";
+ rfkill->shutdown_gpio = bt_wake;
+
+ rfkill->rfkill_dev = rfkill_alloc("bluetooth-rfkill", dev, RFKILL_TYPE_BLUETOOTH,
+ &wand_rfkill_ops, rfkill);
+ if (!rfkill->rfkill_dev) {
+ ret = -ENOMEM;
+ goto bt_fail_free_gpio;
+ }
+
+ ret = rfkill_register(rfkill->rfkill_dev);
+ if (ret < 0)
+ goto bt_fail_unregister;
+
+ dev_info(dev, "bluetooth-rfkill registered.\n");
+
+ return 0;
+
+bt_fail_unregister:
+ rfkill_destroy(rfkill->rfkill_dev);
+bt_fail_free_gpio:
+ if (gpio_is_valid(bt_on)) gpio_free(bt_on);
+ if (gpio_is_valid(bt_wake)) gpio_free(bt_wake);
+ if (gpio_is_valid(bt_host_wake)) gpio_free(bt_host_wake);
+
+ return ret;
+}
+
+static int wand_rfkill_probe(struct platform_device *pdev)
+{
+ struct wand_rfkill_data *rfkill;
+ struct pinctrl *pinctrl;
+ int ret;
+
+ dev_info(&pdev->dev, "Wandboard rfkill initialization\n");
+
+ if (!pdev->dev.of_node) {
+ dev_err(&pdev->dev, "no device tree node\n");
+ return -ENODEV;
+ }
+
+ rfkill = kzalloc(sizeof(*rfkill) * 2, GFP_KERNEL);
+ if (!rfkill)
+ return -ENOMEM;
+
+ pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
+ if (IS_ERR(pinctrl)) {
+ int ret = PTR_ERR(pinctrl);
+ dev_err(&pdev->dev, "failed to get default pinctrl: %d\n", ret);
+ return ret;
+ }
+
+ /* setup WiFi */
+ ret = wand_rfkill_wifi_probe(&pdev->dev, pdev->dev.of_node, &rfkill[0]);
+ if (ret < 0)
+ goto fail_free_rfkill;
+
+ /* setup bluetooth */
+ ret = wand_rfkill_bt_probe(&pdev->dev, pdev->dev.of_node, &rfkill[1]);
+ if (ret < 0)
+ goto fail_unregister_wifi;
+
+ platform_set_drvdata(pdev, rfkill);
+
+ return 0;
+
+fail_unregister_wifi:
+ if (rfkill[1].rfkill_dev) {
+ rfkill_unregister(rfkill[1].rfkill_dev);
+ rfkill_destroy(rfkill[1].rfkill_dev);
+ }
+
+ /* TODO free gpio */
+
+fail_free_rfkill:
+ kfree(rfkill);
+
+ return ret;
+}
+
+static int wand_rfkill_remove(struct platform_device *pdev)
+{
+ struct wand_rfkill_data *rfkill = platform_get_drvdata(pdev);
+
+ dev_info(&pdev->dev, "Module unloading\n");
+
+ if (!rfkill)
+ return 0;
+
+ /* WiFi */
+ if (gpio_is_valid(rfkill[0].shutdown_gpio))
+ gpio_free(rfkill[0].shutdown_gpio);
+
+ rfkill_unregister(rfkill[0].rfkill_dev);
+ rfkill_destroy(rfkill[0].rfkill_dev);
+
+ /* Bt */
+ if (gpio_is_valid(rfkill[1].shutdown_gpio))
+ gpio_free(rfkill[1].shutdown_gpio);
+
+ rfkill_unregister(rfkill[1].rfkill_dev);
+ rfkill_destroy(rfkill[1].rfkill_dev);
+
+ kfree(rfkill);
+
+ return 0;
+}
+
+static struct of_device_id wand_rfkill_match[] = {
+ { .compatible = "wand,imx6q-wandboard-rfkill", },
+ { .compatible = "wand,imx6dl-wandboard-rfkill", },
+ { .compatible = "wand,imx6qdl-wandboard-rfkill", },
+ {}
+};
+
+static struct platform_driver wand_rfkill_driver = {
+ .driver = {
+ .name = "wandboard-rfkill",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(wand_rfkill_match),
+ },
+ .probe = wand_rfkill_probe,
+ .remove = wand_rfkill_remove
+};
+
+module_platform_driver(wand_rfkill_driver);
+
+MODULE_AUTHOR("Vladimir Ermakov <vooon341@gmail.com>");
+MODULE_DESCRIPTION("Wandboard rfkill driver");
+MODULE_LICENSE("GPL v2");
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index 8e29c991ba..710b3fae02 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -116,6 +116,7 @@ config MPENTIUMM
config MPENTIUM4
bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon"
depends on X86_32
+ select X86_P6_NOP
---help---
Select this for Intel Pentium 4 chips. This includes the
Pentium 4, Pentium D, P4-based Celeron and Xeon, and
@@ -148,9 +149,8 @@ config MPENTIUM4
-Paxville
-Dempsey
-
config MK6
- bool "K6/K6-II/K6-III"
+ bool "AMD K6/K6-II/K6-III"
depends on X86_32
---help---
Select this for an AMD K6-family processor. Enables use of
@@ -158,7 +158,7 @@ config MK6
flags to GCC.
config MK7
- bool "Athlon/Duron/K7"
+ bool "AMD Athlon/Duron/K7"
depends on X86_32
---help---
Select this for an AMD Athlon K7-family processor. Enables use of
@@ -166,12 +166,83 @@ config MK7
flags to GCC.
config MK8
- bool "Opteron/Athlon64/Hammer/K8"
+ bool "AMD Opteron/Athlon64/Hammer/K8"
---help---
Select this for an AMD Opteron or Athlon64 Hammer-family processor.
Enables use of some extended instructions, and passes appropriate
optimization flags to GCC.
+config MK8SSE3
+ bool "AMD Opteron/Athlon64/Hammer/K8 with SSE3"
+ ---help---
+ Select this for improved AMD Opteron or Athlon64 Hammer-family processors.
+ Enables use of some extended instructions, and passes appropriate
+ optimization flags to GCC.
+
+config MK10
+ bool "AMD 61xx/7x50/PhenomX3/X4/II/K10"
+ ---help---
+ Select this for an AMD 61xx Eight-Core Magny-Cours, Athlon X2 7x50,
+ Phenom X3/X4/II, Athlon II X2/X3/X4, or Turion II-family processor.
+ Enables use of some extended instructions, and passes appropriate
+ optimization flags to GCC.
+
+config MBARCELONA
+ bool "AMD Barcelona"
+ ---help---
+ Select this for AMD Family 10h Barcelona processors.
+
+ Enables -march=barcelona
+
+config MBOBCAT
+ bool "AMD Bobcat"
+ ---help---
+ Select this for AMD Family 14h Bobcat processors.
+
+ Enables -march=btver1
+
+config MJAGUAR
+ bool "AMD Jaguar"
+ ---help---
+ Select this for AMD Family 16h Jaguar processors.
+
+ Enables -march=btver2
+
+config MBULLDOZER
+ bool "AMD Bulldozer"
+ ---help---
+ Select this for AMD Family 15h Bulldozer processors.
+
+ Enables -march=bdver1
+
+config MPILEDRIVER
+ bool "AMD Piledriver"
+ ---help---
+ Select this for AMD Family 15h Piledriver processors.
+
+ Enables -march=bdver2
+
+config MSTEAMROLLER
+ bool "AMD Steamroller"
+ ---help---
+ Select this for AMD Family 15h Steamroller processors.
+
+ Enables -march=bdver3
+
+config MEXCAVATOR
+ bool "AMD Excavator"
+ ---help---
+ Select this for AMD Family 15h Excavator processors.
+
+ Enables -march=bdver4
+
+config MPCK
+ bool "AMD Zen"
+ ---help---
+ Select this for AMD Family 17h Zen processors.
+
+ Enables -march=znver1
+
config MCRUSOE
bool "Crusoe"
depends on X86_32
@@ -253,6 +324,7 @@ config MVIAC7
config MPSC
bool "Intel P4 / older Netburst based Xeon"
+ select X86_P6_NOP
depends on X86_64
---help---
Optimize for Intel Pentium 4, Pentium D and older Nocona/Dempsey
@@ -262,8 +334,19 @@ config MPSC
using the cpu family field
in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one.
+config MATOM
+ bool "Intel Atom"
+ select X86_P6_NOP
+ ---help---
+
+ Select this for the Intel Atom platform. Intel Atom CPUs have an
+ in-order pipelining architecture and thus can benefit from
+ accordingly optimized code. Use a recent GCC with specific Atom
+ support in order to fully benefit from selecting this option.
+
config MCORE2
- bool "Core 2/newer Xeon"
+ bool "Intel Core 2"
+ select X86_P6_NOP
---help---
Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and
@@ -271,14 +354,106 @@ config MCORE2
family in /proc/cpuinfo. Newer ones have 6 and older ones 15
(not a typo)
-config MATOM
- bool "Intel Atom"
+ Enables -march=core2
+
+config MNEHALEM
+ bool "Intel Nehalem"
+ select X86_P6_NOP
---help---
- Select this for the Intel Atom platform. Intel Atom CPUs have an
- in-order pipelining architecture and thus can benefit from
- accordingly optimized code. Use a recent GCC with specific Atom
- support in order to fully benefit from selecting this option.
+ Select this for 1st Gen Core processors in the Nehalem family.
+
+ Enables -march=nehalem
+
+config MWESTMERE
+ bool "Intel Westmere"
+ select X86_P6_NOP
+ ---help---
+
+ Select this for the Intel Westmere formerly Nehalem-C family.
+
+ Enables -march=westmere
+
+config MSILVERMONT
+ bool "Intel Silvermont"
+ select X86_P6_NOP
+ ---help---
+
+ Select this for the Intel Silvermont platform.
+
+ Enables -march=silvermont
+
+config MSANDYBRIDGE
+ bool "Intel Sandy Bridge"
+ select X86_P6_NOP
+ ---help---
+
+ Select this for 2nd Gen Core processors in the Sandy Bridge family.
+
+ Enables -march=sandybridge
+
+config MIVYBRIDGE
+ bool "Intel Ivy Bridge"
+ select X86_P6_NOP
+ ---help---
+
+ Select this for 3rd Gen Core processors in the Ivy Bridge family.
+
+ Enables -march=ivybridge
+
+config MHASWELL
+ bool "Intel Haswell"
+ select X86_P6_NOP
+ ---help---
+
+ Select this for 4th Gen Core processors in the Haswell family.
+
+ Enables -march=haswell
+
+config MBROADWELL
+ bool "Intel Broadwell"
+ select X86_P6_NOP
+ ---help---
+
+ Select this for 5th Gen Core processors in the Broadwell family.
+
+ Enables -march=broadwell
+
+config MSKYLAKE
+ bool "Intel Skylake"
+ select X86_P6_NOP
+ ---help---
+
+ Select this for 6th Gen Core processors in the Skylake family.
+
+ Enables -march=skylake
+
+config MSKYLAKEX
+ bool "Intel Skylake X"
+ select X86_P6_NOP
+ ---help---
+
+ Select this for 6th Gen Core processors in the Skylake X family.
+
+ Enables -march=skylake-avx512
+
+config MCANNONLAKE
+ bool "Intel Cannon Lake"
+ select X86_P6_NOP
+ ---help---
+
+ Select this for 8th Gen Core processors
+
+ Enables -march=cannonlake
+
+config MICELAKE
+ bool "Intel Ice Lake"
+ select X86_P6_NOP
+ ---help---
+
+ Select this for 8th Gen Core processors in the Ice Lake family.
+
+ Enables -march=icelake
config GENERIC_CPU
bool "Generic-x86-64"
@@ -287,6 +462,19 @@ config GENERIC_CPU
Generic x86-64 CPU.
Run equally well on all x86-64 CPUs.
+config MNATIVE
+ bool "Native optimizations autodetected by GCC"
+ ---help---
+
+ GCC 4.2 and above support -march=native, which automatically detects
+ the optimum settings to use based on your processor. -march=native
+ also detects and applies additional settings beyond -march specific
+ to your CPU, (eg. -msse4). Unless you have a specific reason not to
+ (e.g. distcc cross-compiling), you should probably be using
+ -march=native rather than anything listed below.
+
+ Enables -march=native
+
endchoice
config X86_GENERIC
@@ -311,7 +499,7 @@ config X86_INTERNODE_CACHE_SHIFT
config X86_L1_CACHE_SHIFT
int
default "7" if MPENTIUM4 || MPSC
- default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU
+ default "6" if MK7 || MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MSTEAMROLLER || MEXCAVATOR || MPCK || MJAGUAR || MPENTIUMM || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MNATIVE || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU
default "4" if MELAN || M486 || MGEODEGX1
default "5" if MWINCHIP3D || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX
@@ -329,35 +517,36 @@ config X86_ALIGNMENT_16
config X86_INTEL_USERCOPY
def_bool y
- depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2
+ depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK8SSE3 || MK7 || MEFFICEON || MCORE2 || MK10 || MBARCELONA || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MNATIVE
config X86_USE_PPRO_CHECKSUM
def_bool y
- depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MATOM
+ depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MK10 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MK8SSE3 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MATOM || MNATIVE
config X86_USE_3DNOW
def_bool y
depends on (MCYRIXIII || MK7 || MGEODE_LX) && !UML
-#
-# P6_NOPs are a relatively minor optimization that require a family >=
-# 6 processor, except that it is broken on certain VIA chips.
-# Furthermore, AMD chips prefer a totally different sequence of NOPs
-# (which work on all CPUs). In addition, it looks like Virtual PC
-# does not understand them.
-#
-# As a result, disallow these if we're not compiling for X86_64 (these
-# NOPs do work on all x86-64 capable chips); the list of processors in
-# the right-hand clause are the cores that benefit from this optimization.
-#
config X86_P6_NOP
- def_bool y
- depends on X86_64
- depends on (MCORE2 || MPENTIUM4 || MPSC)
+ default n
+ bool "Support for P6_NOPs on Intel chips"
+ depends on (MCORE2 || MPENTIUM4 || MPSC || MATOM || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MNATIVE)
+ ---help---
+ P6_NOPs are a relatively minor optimization that require a family >=
+ 6 processor, except that it is broken on certain VIA chips.
+ Furthermore, AMD chips prefer a totally different sequence of NOPs
+ (which work on all CPUs). In addition, it looks like Virtual PC
+ does not understand them.
+
+ As a result, disallow these if we're not compiling for X86_64 (these
+ NOPs do work on all x86-64 capable chips); the list of processors in
+ the right-hand clause are the cores that benefit from this optimization.
+
+ Say Y if you have Intel CPU newer than Pentium Pro, N otherwise.
config X86_TSC
def_bool y
- depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MATOM) || X86_64
+ depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MK8SSE3 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MNATIVE || MATOM) || X86_64
config X86_CMPXCHG64
def_bool y
@@ -367,7 +556,7 @@ config X86_CMPXCHG64
# generates cmov.
config X86_CMOV
def_bool y
- depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX)
+ depends on (MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MSTEAMROLLER || MEXCAVATOR || MPCK || MJAGUAR || MK7 || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MNATIVE || MATOM || MGEODE_LX)
config X86_MINIMUM_CPU_FAMILY
int
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 94df086880..dfcfd34233 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -119,13 +119,46 @@ else
KBUILD_CFLAGS += $(call cc-option,-mskip-rax-setup)
# FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
+ cflags-$(CONFIG_MNATIVE) += $(call cc-option,-march=native)
cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
+ cflags-$(CONFIG_MK8SSE3) += $(call cc-option,-march=k8-sse3,-mtune=k8)
+ cflags-$(CONFIG_MK10) += $(call cc-option,-march=amdfam10)
+ cflags-$(CONFIG_MBARCELONA) += $(call cc-option,-march=barcelona)
+ cflags-$(CONFIG_MBOBCAT) += $(call cc-option,-march=btver1)
+ cflags-$(CONFIG_MJAGUAR) += $(call cc-option,-march=btver2)
+ cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1)
+ cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2)
+ cflags-$(CONFIG_MSTEAMROLLER) += $(call cc-option,-march=bdver3)
+ cflags-$(CONFIG_MEXCAVATOR) += $(call cc-option,-march=bdver4)
+ cflags-$(CONFIG_MPCK) += $(call cc-option,-march=znver1)
cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
cflags-$(CONFIG_MCORE2) += \
- $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
- cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom) \
- $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic))
+ $(call cc-option,-march=core2,$(call cc-option,-mtune=core2))
+ cflags-$(CONFIG_MNEHALEM) += \
+ $(call cc-option,-march=nehalem,$(call cc-option,-mtune=nehalem))
+ cflags-$(CONFIG_MWESTMERE) += \
+ $(call cc-option,-march=westmere,$(call cc-option,-mtune=westmere))
+ cflags-$(CONFIG_MSILVERMONT) += \
+ $(call cc-option,-march=silvermont,$(call cc-option,-mtune=silvermont))
+ cflags-$(CONFIG_MSANDYBRIDGE) += \
+ $(call cc-option,-march=sandybridge,$(call cc-option,-mtune=sandybridge))
+ cflags-$(CONFIG_MIVYBRIDGE) += \
+ $(call cc-option,-march=ivybridge,$(call cc-option,-mtune=ivybridge))
+ cflags-$(CONFIG_MHASWELL) += \
+ $(call cc-option,-march=haswell,$(call cc-option,-mtune=haswell))
+ cflags-$(CONFIG_MBROADWELL) += \
+ $(call cc-option,-march=broadwell,$(call cc-option,-mtune=broadwell))
+ cflags-$(CONFIG_MSKYLAKE) += \
+ $(call cc-option,-march=skylake,$(call cc-option,-mtune=skylake))
+ cflags-$(CONFIG_MSKYLAKEX) += \
+ $(call cc-option,-march=skylake-avx512,$(call cc-option,-mtune=skylake-avx512))
+ cflags-$(CONFIG_MCANNONLAKE) += \
+ $(call cc-option,-march=cannonlake,$(call cc-option,-mtune=cannonlake))
+ cflags-$(CONFIG_MICELAKE) += \
+ $(call cc-option,-march=icelake,$(call cc-option,-mtune=icelake))
+ cflags-$(CONFIG_MATOM) += $(call cc-option,-march=bonnell) \
+ $(call cc-option,-mtune=bonnell,$(call cc-option,-mtune=generic))
cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
KBUILD_CFLAGS += $(cflags-y)
diff --git a/arch/x86/Makefile_32.cpu b/arch/x86/Makefile_32.cpu
index 1f5faf8606..d9d3b2fad2 100644
--- a/arch/x86/Makefile_32.cpu
+++ b/arch/x86/Makefile_32.cpu
@@ -23,7 +23,18 @@ cflags-$(CONFIG_MK6) += -march=k6
# Please note, that patches that add -march=athlon-xp and friends are pointless.
# They make zero difference whatsosever to performance at this time.
cflags-$(CONFIG_MK7) += -march=athlon
+cflags-$(CONFIG_MNATIVE) += $(call cc-option,-march=native)
cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8,-march=athlon)
+cflags-$(CONFIG_MK8SSE3) += $(call cc-option,-march=k8-sse3,-march=athlon)
+cflags-$(CONFIG_MK10) += $(call cc-option,-march=amdfam10,-march=athlon)
+cflags-$(CONFIG_MBARCELONA) += $(call cc-option,-march=barcelona,-march=athlon)
+cflags-$(CONFIG_MBOBCAT) += $(call cc-option,-march=btver1,-march=athlon)
+cflags-$(CONFIG_MJAGUAR) += $(call cc-option,-march=btver2,-march=athlon)
+cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1,-march=athlon)
+cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2,-march=athlon)
+cflags-$(CONFIG_MSTEAMROLLER) += $(call cc-option,-march=bdver3,-march=athlon)
+cflags-$(CONFIG_MEXCAVATOR) += $(call cc-option,-march=bdver4,-march=athlon)
+cflags-$(CONFIG_MPCK) += $(call cc-option,-march=znver1,-march=athlon)
cflags-$(CONFIG_MCRUSOE) += -march=i686 -falign-functions=0 -falign-jumps=0 -falign-loops=0
cflags-$(CONFIG_MEFFICEON) += -march=i686 $(call tune,pentium3) -falign-functions=0 -falign-jumps=0 -falign-loops=0
cflags-$(CONFIG_MWINCHIPC6) += $(call cc-option,-march=winchip-c6,-march=i586)
@@ -32,8 +43,19 @@ cflags-$(CONFIG_MCYRIXIII) += $(call cc-option,-march=c3,-march=i486) -falign-fu
cflags-$(CONFIG_MVIAC3_2) += $(call cc-option,-march=c3-2,-march=i686)
cflags-$(CONFIG_MVIAC7) += -march=i686
cflags-$(CONFIG_MCORE2) += -march=i686 $(call tune,core2)
-cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom,$(call cc-option,-march=core2,-march=i686)) \
- $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic))
+cflags-$(CONFIG_MNEHALEM) += -march=i686 $(call tune,nehalem)
+cflags-$(CONFIG_MWESTMERE) += -march=i686 $(call tune,westmere)
+cflags-$(CONFIG_MSILVERMONT) += -march=i686 $(call tune,silvermont)
+cflags-$(CONFIG_MSANDYBRIDGE) += -march=i686 $(call tune,sandybridge)
+cflags-$(CONFIG_MIVYBRIDGE) += -march=i686 $(call tune,ivybridge)
+cflags-$(CONFIG_MHASWELL) += -march=i686 $(call tune,haswell)
+cflags-$(CONFIG_MBROADWELL) += -march=i686 $(call tune,broadwell)
+cflags-$(CONFIG_MSKYLAKE) += -march=i686 $(call tune,skylake)
+cflags-$(CONFIG_MSKYLAKEX) += -march=i686 $(call tune,skylake-avx512)
+cflags-$(CONFIG_MCANNONLAKE) += -march=i686 $(call tune,cannonlake)
+cflags-$(CONFIG_MICELAKE) += -march=i686 $(call tune,icelake)
+cflags-$(CONFIG_MATOM) += $(call cc-option,-march=bonnell,$(call cc-option,-march=core2,-march=i686)) \
+ $(call cc-option,-mtune=bonnell,$(call cc-option,-mtune=generic))
# AMD Elan support
cflags-$(CONFIG_MELAN) += -march=i486
diff --git a/arch/x86/include/asm/module.h b/arch/x86/include/asm/module.h
index 7948a17feb..2d7657ef0b 100644
--- a/arch/x86/include/asm/module.h
+++ b/arch/x86/include/asm/module.h
@@ -25,6 +25,30 @@ struct mod_arch_specific {
#define MODULE_PROC_FAMILY "586MMX "
#elif defined CONFIG_MCORE2
#define MODULE_PROC_FAMILY "CORE2 "
+#elif defined CONFIG_MNATIVE
+#define MODULE_PROC_FAMILY "NATIVE "
+#elif defined CONFIG_MNEHALEM
+#define MODULE_PROC_FAMILY "NEHALEM "
+#elif defined CONFIG_MWESTMERE
+#define MODULE_PROC_FAMILY "WESTMERE "
+#elif defined CONFIG_MSILVERMONT
+#define MODULE_PROC_FAMILY "SILVERMONT "
+#elif defined CONFIG_MSANDYBRIDGE
+#define MODULE_PROC_FAMILY "SANDYBRIDGE "
+#elif defined CONFIG_MIVYBRIDGE
+#define MODULE_PROC_FAMILY "IVYBRIDGE "
+#elif defined CONFIG_MHASWELL
+#define MODULE_PROC_FAMILY "HASWELL "
+#elif defined CONFIG_MBROADWELL
+#define MODULE_PROC_FAMILY "BROADWELL "
+#elif defined CONFIG_MSKYLAKE
+#define MODULE_PROC_FAMILY "SKYLAKE "
+#elif defined CONFIG_MSKYLAKEX
+#define MODULE_PROC_FAMILY "SKYLAKEX "
+#elif defined CONFIG_MCANNONLAKE
+#define MODULE_PROC_FAMILY "CANNONLAKE "
+#elif defined CONFIG_MICELAKE
+#define MODULE_PROC_FAMILY "ICELAKE "
#elif defined CONFIG_MATOM
#define MODULE_PROC_FAMILY "ATOM "
#elif defined CONFIG_M686
@@ -43,6 +67,26 @@ struct mod_arch_specific {
#define MODULE_PROC_FAMILY "K7 "
#elif defined CONFIG_MK8
#define MODULE_PROC_FAMILY "K8 "
+#elif defined CONFIG_MK8SSE3
+#define MODULE_PROC_FAMILY "K8SSE3 "
+#elif defined CONFIG_MK10
+#define MODULE_PROC_FAMILY "K10 "
+#elif defined CONFIG_MBARCELONA
+#define MODULE_PROC_FAMILY "BARCELONA "
+#elif defined CONFIG_MBOBCAT
+#define MODULE_PROC_FAMILY "BOBCAT "
+#elif defined CONFIG_MBULLDOZER
+#define MODULE_PROC_FAMILY "BULLDOZER "
+#elif defined CONFIG_MPILEDRIVER
+#define MODULE_PROC_FAMILY "PILEDRIVER "
+#elif defined CONFIG_MSTEAMROLLER
+#define MODULE_PROC_FAMILY "STEAMROLLER "
+#elif defined CONFIG_MJAGUAR
+#define MODULE_PROC_FAMILY "JAGUAR "
+#elif defined CONFIG_MEXCAVATOR
+#define MODULE_PROC_FAMILY "EXCAVATOR "
+#elif defined CONFIG_MPCK
+#define MODULE_PROC_FAMILY "PCK "
#elif defined CONFIG_MELAN
#define MODULE_PROC_FAMILY "ELAN "
#elif defined CONFIG_MCRUSOE
diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c
index d63e63b7d1..0a8b816857 100644
--- a/arch/x86/kernel/amd_nb.c
+++ b/arch/x86/kernel/amd_nb.c
@@ -21,6 +21,7 @@
#define PCI_DEVICE_ID_AMD_17H_DF_F4 0x1464
#define PCI_DEVICE_ID_AMD_17H_M10H_DF_F4 0x15ec
#define PCI_DEVICE_ID_AMD_17H_M30H_DF_F4 0x1494
+#define PCI_DEVICE_ID_AMD_17H_M70H_DF_F4 0x1444
/* Protect the PCI config register pairs used for SMN and DF indirect access. */
static DEFINE_MUTEX(smn_mutex);
@@ -49,6 +50,7 @@ const struct pci_device_id amd_nb_misc_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_DF_F3) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M10H_DF_F3) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M30H_DF_F3) },
+ { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M70H_DF_F3) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CNB17H_F3) },
{}
};
@@ -63,6 +65,7 @@ static const struct pci_device_id amd_nb_link_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_DF_F4) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M10H_DF_F4) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M30H_DF_F4) },
+ { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M70H_DF_F4) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CNB17H_F4) },
{}
};
diff --git a/block/Kconfig b/block/Kconfig
index 8b5f8e560e..e227cd4cf2 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -73,7 +73,6 @@ config BLK_DEV_INTEGRITY
config BLK_DEV_ZONED
bool "Zoned block device support"
- select MQ_IOSCHED_DEADLINE
---help---
Block layer zoned block device support. This option enables
support for ZAC/ZBC host-managed and host-aware zoned block devices.
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index b33be928d1..0319d63398 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -2016,7 +2016,7 @@ static void bfq_add_request(struct request *rq)
(bfqq->last_serv_time_ns > 0 &&
bfqd->rqs_injected && bfqd->rq_in_driver > 0)) &&
time_is_before_eq_jiffies(bfqq->decrease_time_jif +
- msecs_to_jiffies(100))) {
+ msecs_to_jiffies(10))) {
bfqd->last_empty_occupied_ns = ktime_get_ns();
/*
* Start the state machine for measuring the
@@ -2025,7 +2025,21 @@ static void bfq_add_request(struct request *rq)
* be set when rq will be dispatched.
*/
bfqd->wait_dispatch = true;
- bfqd->rqs_injected = false;
+ /*
+ * If there is no I/O in service in the drive,
+ * then possible injection occurred before the
+ * arrival of rq will not affect the total
+ * service time of rq. So the injection limit
+ * must not be updated as a function of such
+ * total service time, unless new injection
+ * occurs before rq is completed. To have the
+ * injection limit updated only in the latter
+ * case, reset rqs_injected here (rqs_injected
+ * will be set in case injection is performed
+ * on bfqq before rq is completed).
+ */
+ if (bfqd->rq_in_driver == 0)
+ bfqd->rqs_injected = false;
}
}
@@ -5784,14 +5798,14 @@ static void bfq_update_inject_limit(struct bfq_data *bfqd,
u64 tot_time_ns = ktime_get_ns() - bfqd->last_empty_occupied_ns;
unsigned int old_limit = bfqq->inject_limit;
- if (bfqq->last_serv_time_ns > 0) {
+ if (bfqq->last_serv_time_ns > 0 && bfqd->rqs_injected) {
u64 threshold = (bfqq->last_serv_time_ns * 3)>>1;
if (tot_time_ns >= threshold && old_limit > 0) {
bfqq->inject_limit--;
bfqq->decrease_time_jif = jiffies;
} else if (tot_time_ns < threshold &&
- old_limit < bfqd->max_rq_in_driver<<1)
+ old_limit <= bfqd->max_rq_in_driver)
bfqq->inject_limit++;
}
@@ -5809,12 +5823,14 @@ static void bfq_update_inject_limit(struct bfq_data *bfqd,
*/
if ((bfqq->last_serv_time_ns == 0 && bfqd->rq_in_driver == 1) ||
tot_time_ns < bfqq->last_serv_time_ns) {
+ if (bfqq->last_serv_time_ns == 0) {
+ /*
+ * Now we certainly have a base value: make sure we
+ * start trying injection.
+ */
+ bfqq->inject_limit = max_t(unsigned int, 1, old_limit);
+ }
bfqq->last_serv_time_ns = tot_time_ns;
- /*
- * Now we certainly have a base value: make sure we
- * start trying injection.
- */
- bfqq->inject_limit = max_t(unsigned int, 1, old_limit);
} else if (!bfqd->rqs_injected && bfqd->rq_in_driver == 1)
/*
* No I/O injected and no request still in service in
@@ -5830,6 +5846,7 @@ static void bfq_update_inject_limit(struct bfq_data *bfqd,
/* update complete, not waiting for any request completion any longer */
bfqd->waited_rq = NULL;
+ bfqd->rqs_injected = false;
}
/*
diff --git a/block/elevator.c b/block/elevator.c
index 2f17d66d0e..48384c07f1 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -604,8 +604,10 @@ int elevator_init_mq(struct request_queue *q)
struct elevator_type *e;
int err = 0;
+#ifndef CONFIG_PCK_INTERACTIVE
if (q->nr_hw_queues != 1)
return 0;
+#endif
/*
* q->sysfs_lock must be held to provide mutual exclusion between
@@ -615,7 +617,13 @@ int elevator_init_mq(struct request_queue *q)
if (unlikely(q->elevator))
goto out_unlock;
+#if defined(CONFIG_PCK_INTERACTIVE) && defined(CONFIG_MQ_IOSCHED_BFQ)
+ e = elevator_get(q, "bfq-mq", false);
+#elif defined(CONFIG_PCK_INTERACTIVE) && defined(CONFIG_IOSCHED_BFQ)
+ e = elevator_get(q, "bfq", false);
+#else
e = elevator_get(q, "mq-deadline", false);
+#endif
if (!e)
goto out_unlock;
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index ab7ca59890..80d06084b0 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -738,6 +738,24 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
return error;
}
+/*
+ * for AUFS
+ * no get/put for file.
+ */
+struct file *loop_backing_file(struct super_block *sb)
+{
+ struct file *ret;
+ struct loop_device *l;
+
+ ret = NULL;
+ if (MAJOR(sb->s_dev) == LOOP_MAJOR) {
+ l = sb->s_bdev->bd_disk->private_data;
+ ret = l->lo_backing_file;
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(loop_backing_file);
+
/* loop sysfs attributes */
static ssize_t loop_attr_show(struct device *dev, char *page,
diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig
index fe7a4b7d30..19cc8cf60b 100644
--- a/drivers/block/zram/Kconfig
+++ b/drivers/block/zram/Kconfig
@@ -2,7 +2,8 @@
config ZRAM
tristate "Compressed RAM block device support"
depends on BLOCK && SYSFS && ZSMALLOC && CRYPTO
- select CRYPTO_LZO
+ select CRYPTO_LZO if !PCK_INTERACTIVE
+ select CRYPTO_LZ4 if PCK_INTERACTIVE
help
Creates virtual block devices called /dev/zramX (X = 0, 1, ...).
Pages written to these disks are compressed and stored in memory
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index d58a359a66..395332f0a3 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -41,7 +41,11 @@ static DEFINE_IDR(zram_index_idr);
static DEFINE_MUTEX(zram_index_mutex);
static int zram_major;
+#ifdef CONFIG_PCK_INTERACTIVE
+static const char *default_compressor = "lz4";
+#else
static const char *default_compressor = "lzo-rle";
+#endif
/* Module params (documentation at end) */
static unsigned int num_devices = 1;
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index dced033875..0329632a8a 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -19,7 +19,11 @@
/* On-demand governor macros */
#define DEF_FREQUENCY_UP_THRESHOLD (80)
+#ifdef CONFIG_PCK_INTERACTIVE
+#define DEF_SAMPLING_DOWN_FACTOR (5)
+#else
#define DEF_SAMPLING_DOWN_FACTOR (1)
+#endif
#define MAX_SAMPLING_DOWN_FACTOR (100000)
#define MICRO_FREQUENCY_UP_THRESHOLD (95)
#define MICRO_FREQUENCY_MIN_SAMPLE_RATE (10000)
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index bb13c266c3..2fc9317ccb 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -69,6 +69,20 @@ config GPIO_SYSFS
ioctl() operations instead. The character device is always
available.
+config GPIO_OF_HELPER
+ bool "GPIO OF helper device (EXPERIMENTAL)"
+ depends on OF_GPIO
+ help
+ Say Y here to add an GPIO OF helper driver
+
+ Allows you specify a GPIO helper based on OF
+ which allows simple export of GPIO functionality
+ in user-space.
+
+ Features include, value set/get, direction control,
+ interrupt/value change poll support, event counting
+ and others.
+
config GPIO_GENERIC
depends on HAS_IOMEM # Only for IOMEM drivers
tristate
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index a4e91175c7..3a7520ba02 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_GPIOLIB) += gpiolib-devprop.o
obj-$(CONFIG_OF_GPIO) += gpiolib-of.o
obj-$(CONFIG_GPIO_SYSFS) += gpiolib-sysfs.o
obj-$(CONFIG_GPIO_ACPI) += gpiolib-acpi.o
+obj-$(CONFIG_GPIO_OF_HELPER) += gpio-of-helper.o
# Device drivers. Generally keep list sorted alphabetically
obj-$(CONFIG_GPIO_GENERIC) += gpio-generic.o
diff --git a/drivers/gpio/gpio-of-helper.c b/drivers/gpio/gpio-of-helper.c
new file mode 100644
index 0000000000..83f362f7da
--- /dev/null
+++ b/drivers/gpio/gpio-of-helper.c
@@ -0,0 +1,435 @@
+/*
+ * GPIO OF based helper
+ *
+ * A simple DT based driver to provide access to GPIO functionality
+ * to user-space via sysfs.
+ *
+ * Copyright (C) 2013 Pantelis Antoniou <panto@antoniou-consulting.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/atomic.h>
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+#include <linux/math64.h>
+#include <linux/atomic.h>
+#include <linux/idr.h>
+
+/* fwd decl. */
+struct gpio_of_helper_info;
+
+enum gpio_type {
+ GPIO_TYPE_INPUT = 0,
+ GPIO_TYPE_OUTPUT = 1,
+};
+
+struct gpio_of_entry {
+ int id;
+ struct gpio_of_helper_info *info;
+ struct device_node *node;
+ enum gpio_type type;
+ int gpio;
+ int irq;
+ const char *name;
+ atomic64_t counter;
+ unsigned int count_flags;
+#define COUNT_RISING_EDGE (1 << 0)
+#define COUNT_FALLING_EDGE (1 << 1)
+};
+
+struct gpio_of_helper_info {
+ struct platform_device *pdev;
+ struct idr idr;
+};
+
+static const struct of_device_id gpio_of_helper_of_match[] = {
+ {
+ .compatible = "gpio-of-helper",
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, gpio_of_helper_of_match);
+
+static ssize_t gpio_of_helper_show_status(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct gpio_of_helper_info *info = platform_get_drvdata(pdev);
+ struct gpio_of_entry *entry;
+ char *p, *e;
+ int id, n;
+
+ p = buf;
+ e = p + PAGE_SIZE;
+ n = 0;
+ idr_for_each_entry(&info->idr, entry, id) {
+ switch (entry->type) {
+ case GPIO_TYPE_INPUT:
+ n = snprintf(p, e - p, "%2d %-24s %3d %-3s %llu\n",
+ entry->id, entry->name, entry->gpio, "IN",
+ (unsigned long long)
+ atomic64_read(&entry->counter));
+ break;
+ case GPIO_TYPE_OUTPUT:
+ n = snprintf(p, e - p, "%2d %-24s %3d %-3s\n",
+ entry->id, entry->name, entry->gpio, "OUT");
+ break;
+ }
+ p += n;
+ }
+
+ return p - buf;
+}
+
+static DEVICE_ATTR(status, S_IRUGO,
+ gpio_of_helper_show_status, NULL);
+
+static irqreturn_t gpio_of_helper_handler(int irq, void *ptr)
+{
+ struct gpio_of_entry *entry = ptr;
+
+ /* caution - low speed interfaces only! */
+ atomic64_inc(&entry->counter);
+
+ return IRQ_HANDLED;
+}
+
+static struct gpio_of_entry *
+gpio_of_entry_create(struct gpio_of_helper_info *info,
+ struct device_node *node)
+{
+ struct platform_device *pdev = info->pdev;
+ struct device *dev = &pdev->dev;
+ struct gpio_of_entry *entry;
+ int err, gpio, irq;
+ unsigned int req_flags, count_flags, irq_flags;
+ enum gpio_type type;
+ enum of_gpio_flags gpio_flags;
+ const char *name;
+
+ /* get the type of the node first */
+ if (of_property_read_bool(node, "input"))
+ type = GPIO_TYPE_INPUT;
+ else if (of_property_read_bool(node, "output")
+ || of_property_read_bool(node, "init-low")
+ || of_property_read_bool(node, "init-high"))
+ type = GPIO_TYPE_OUTPUT;
+ else {
+ dev_err(dev, "Not valid gpio node type\n");
+ err = -EINVAL;
+ goto err_bad_node;
+ }
+
+ /* get the name */
+ if (of_property_read_string(node, "line-name", &name))
+ if (of_property_read_string(node, "gpio-name", &name))
+ name = node->name;
+
+ err = of_get_named_gpio_flags(node, "gpio", 0, &gpio_flags);
+ if (IS_ERR_VALUE(err)) {
+ dev_err(dev, "Failed to get gpio property of '%s'\n", name);
+ goto err_bad_node;
+ }
+ gpio = err;
+
+ req_flags = 0;
+ count_flags = 0;
+
+ /* set the request flags */
+ switch (type) {
+ case GPIO_TYPE_INPUT:
+ req_flags = GPIOF_DIR_IN | GPIOF_EXPORT;
+ if (of_property_read_bool(node, "count-falling-edge"))
+ count_flags |= COUNT_FALLING_EDGE;
+ if (of_property_read_bool(node, "count-rising-edge"))
+ count_flags |= COUNT_RISING_EDGE;
+ break;
+ case GPIO_TYPE_OUTPUT:
+ req_flags = GPIOF_DIR_OUT | GPIOF_EXPORT;
+ if (of_property_read_bool(node, "init-high"))
+ req_flags |= GPIOF_OUT_INIT_HIGH;
+ else if (of_property_read_bool(node, "init-low"))
+ req_flags |= GPIOF_OUT_INIT_LOW;
+ break;
+ }
+ if (of_property_read_bool(node, "dir-changeable"))
+ req_flags |= GPIOF_EXPORT_CHANGEABLE;
+ if (gpio_flags & OF_GPIO_ACTIVE_LOW)
+ req_flags |= GPIOF_ACTIVE_LOW;
+ if (gpio_flags & OF_GPIO_SINGLE_ENDED) {
+ if (gpio_flags & OF_GPIO_ACTIVE_LOW)
+ req_flags |= GPIOF_OPEN_DRAIN;
+ else
+ req_flags |= GPIOF_OPEN_SOURCE;
+ }
+
+ /* request the gpio */
+ err = devm_gpio_request_one(dev, gpio, req_flags, name);
+ if (err != 0) {
+ dev_err(dev, "Failed to request gpio '%s'\n", name);
+ goto err_bad_node;
+ }
+
+ irq = -1;
+ irq_flags = 0;
+
+ /* counter mode requested - need an interrupt */
+ if (count_flags != 0) {
+ irq = gpio_to_irq(gpio);
+ if (IS_ERR_VALUE(irq)) {
+ dev_err(dev, "Failed to request gpio '%s'\n", name);
+ goto err_bad_node;
+ }
+
+ if (count_flags & COUNT_RISING_EDGE)
+ irq_flags |= IRQF_TRIGGER_RISING;
+ if (count_flags & COUNT_FALLING_EDGE)
+ irq_flags |= IRQF_TRIGGER_FALLING;
+ }
+
+// if (!idr_pre_get(&info->idr, GFP_KERNEL)) {
+// dev_err(dev, "Failed on idr_pre_get of '%s'\n", name);
+// err = -ENOMEM;
+// goto err_no_mem;
+// }
+
+ idr_preload(GFP_KERNEL);
+
+ entry = devm_kzalloc(dev, sizeof(*entry), GFP_KERNEL);
+ if (entry == NULL) {
+ dev_err(dev, "Failed to allocate gpio entry of '%s'\n", name);
+ err = -ENOMEM;
+ goto err_no_mem;
+ }
+
+ entry->id = -1;
+ entry->info = info;
+ entry->node = of_node_get(node); /* get node reference */
+ entry->type = type;
+ entry->gpio = gpio;
+ entry->irq = irq;
+ entry->name = name;
+
+ /* interrupt enable is last thing done */
+ if (irq >= 0) {
+ atomic64_set(&entry->counter, 0);
+ entry->count_flags = count_flags;
+ err = devm_request_irq(dev, irq, gpio_of_helper_handler,
+ irq_flags, name, entry);
+ if (err != 0) {
+ dev_err(dev, "Failed to request irq of '%s'\n", name);
+ goto err_no_irq;
+ }
+ }
+
+ /* all done; insert */
+// err = idr_get_new(&info->idr, entry, &entry->id);
+// if (IS_ERR_VALUE(err)) {
+// dev_err(dev, "Failed to idr_get_new of '%s'\n", name);
+// goto err_fail_idr;
+// }
+
+ err = idr_alloc(&info->idr, entry, 0, 0, GFP_NOWAIT);
+ if (err >= 0)
+ entry->id = err;
+
+ idr_preload_end();
+
+ if (err < 0) {
+ dev_err(dev, "Failed to idr_get_new of '%s'\n", name);
+ goto err_fail_idr;
+ }
+
+ dev_dbg(dev, "Allocated GPIO id=%d name='%s'\n", entry->id, name);
+
+ return entry;
+
+err_fail_idr:
+ /* nothing to do */
+err_no_irq:
+ /* release node ref */
+ of_node_put(node);
+ /* nothing else needs to be done, devres handles it */
+err_no_mem:
+err_bad_node:
+ return ERR_PTR(err);
+}
+
+static int gpio_of_entry_destroy(struct gpio_of_entry *entry)
+{
+ struct gpio_of_helper_info *info = entry->info;
+ struct platform_device *pdev = info->pdev;
+ struct device *dev = &pdev->dev;
+
+ dev_dbg(dev, "Destroying GPIO id=%d\n", entry->id);
+
+ /* remove from the IDR */
+ idr_remove(&info->idr, entry->id);
+
+ /* remove node ref */
+ of_node_put(entry->node);
+
+ /* free gpio */
+ devm_gpio_free(dev, entry->gpio);
+
+ /* gree irq */
+ if (entry->irq >= 0)
+ devm_free_irq(dev, entry->irq, entry);
+
+ /* and free */
+ devm_kfree(dev, entry);
+
+ return 0;
+}
+
+static int gpio_of_helper_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct gpio_of_helper_info *info;
+ struct gpio_of_entry *entry;
+ struct device_node *pnode = pdev->dev.of_node;
+ struct device_node *cnode;
+ struct pinctrl *pinctrl;
+ int err;
+
+ /* we only support OF */
+ if (pnode == NULL) {
+ dev_err(&pdev->dev, "No platform of_node!\n");
+ return -ENODEV;
+ }
+
+ pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
+ if (IS_ERR(pinctrl)) {
+ /* special handling for probe defer */
+ if (PTR_ERR(pinctrl) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+ dev_warn(&pdev->dev,
+ "pins are not configured from the driver\n");
+ }
+
+ info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
+ if (info == NULL) {
+ dev_err(&pdev->dev, "Failed to allocate info\n");
+ err = -ENOMEM;
+ goto err_no_mem;
+ }
+ platform_set_drvdata(pdev, info);
+ info->pdev = pdev;
+
+ idr_init(&info->idr);
+
+ err = device_create_file(dev, &dev_attr_status);
+ if (err != 0) {
+ dev_err(dev, "Failed to create status sysfs attribute\n");
+ goto err_no_sysfs;
+ }
+
+ for_each_child_of_node(pnode, cnode) {
+
+ entry = gpio_of_entry_create(info, cnode);
+ if (IS_ERR_OR_NULL(entry)) {
+ dev_err(dev, "Failed to create gpio entry\n");
+ err = PTR_ERR(entry);
+ goto err_fail_entry;
+ }
+ }
+
+ dev_info(&pdev->dev, "ready\n");
+
+ return 0;
+err_fail_entry:
+ device_remove_file(&pdev->dev, &dev_attr_status);
+err_no_sysfs:
+err_no_mem:
+ return err;
+}
+
+static int gpio_of_helper_remove(struct platform_device *pdev)
+{
+ struct gpio_of_helper_info *info = platform_get_drvdata(pdev);
+ struct gpio_of_entry *entry;
+ int id;
+
+ dev_info(&pdev->dev, "removing\n");
+
+ device_remove_file(&pdev->dev, &dev_attr_status);
+
+ id = 0;
+ idr_for_each_entry(&info->idr, entry, id) {
+ /* destroy each and every one */
+ gpio_of_entry_destroy(entry);
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+//#ifdef CONFIG_PM_RUNTIME
+static int gpio_of_helper_runtime_suspend(struct device *dev)
+{
+ /* place holder */
+ return 0;
+}
+
+static int gpio_of_helper_runtime_resume(struct device *dev)
+{
+ /* place holder */
+ return 0;
+}
+//#endif /* CONFIG_PM_RUNTIME */
+
+static struct dev_pm_ops gpio_of_helper_pm_ops = {
+ SET_RUNTIME_PM_OPS(gpio_of_helper_runtime_suspend,
+ gpio_of_helper_runtime_resume, NULL)
+};
+#define GPIO_OF_HELPER_PM_OPS (&gpio_of_helper_pm_ops)
+#else
+#define GPIO_OF_HELPER_PM_OPS NULL
+#endif /* CONFIG_PM */
+
+struct platform_driver gpio_of_helper_driver = {
+ .probe = gpio_of_helper_probe,
+ .remove = gpio_of_helper_remove,
+ .driver = {
+ .name = "gpio-of-helper",
+ .owner = THIS_MODULE,
+ .pm = GPIO_OF_HELPER_PM_OPS,
+ .of_match_table = gpio_of_helper_of_match,
+ },
+};
+
+module_platform_driver(gpio_of_helper_driver);
+
+MODULE_AUTHOR("Pantelis Antoniou <panto@antoniou-consulting.com>");
+MODULE_DESCRIPTION("GPIO OF Helper driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:gpio-of-helper");
diff --git a/drivers/gpio/gpiolib-sysfs.c b/drivers/gpio/gpiolib-sysfs.c
index fbf6b1a0a4..ec7aa6f3c5 100644
--- a/drivers/gpio/gpiolib-sysfs.c
+++ b/drivers/gpio/gpiolib-sysfs.c
@@ -37,10 +37,10 @@ static DEFINE_MUTEX(sysfs_lock);
/*
* /sys/class/gpio/gpioN... only for GPIOs that are exported
* /direction
- * * MAY BE OMITTED if kernel won't allow direction changes
* * is read/write as "in" or "out"
* * may also be written as "high" or "low", initializing
* output value as specified ("out" implies "low")
+ * * read-only if kernel won't allow direction changes
* /value
* * always readable, subject to hardware behavior
* * may be writable, as zero/nonzero
@@ -53,6 +53,8 @@ static DEFINE_MUTEX(sysfs_lock);
* * is read/write as zero/nonzero
* * also affects existing and subsequent "falling" and "rising"
* /edge configuration
+ * /label
+ * * descriptor label
*/
static ssize_t direction_show(struct device *dev,
@@ -83,7 +85,9 @@ static ssize_t direction_store(struct device *dev,
mutex_lock(&data->mutex);
- if (sysfs_streq(buf, "high"))
+ if (!data->direction_can_change)
+ status = -EPERM;
+ else if (sysfs_streq(buf, "high"))
status = gpiod_direction_output_raw(desc, 1);
else if (sysfs_streq(buf, "out") || sysfs_streq(buf, "low"))
status = gpiod_direction_output_raw(desc, 0);
@@ -362,6 +366,23 @@ static ssize_t active_low_store(struct device *dev,
}
static DEVICE_ATTR_RW(active_low);
+static ssize_t label_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct gpiod_data *data = dev_get_drvdata(dev);
+ struct gpio_desc *desc = data->desc;
+ ssize_t status;
+
+ mutex_lock(&data->mutex);
+
+ status = sprintf(buf, "%s\n", desc->label);
+
+ mutex_unlock(&data->mutex);
+
+ return status;
+}
+static DEVICE_ATTR_RO(label);
+
static umode_t gpio_is_visible(struct kobject *kobj, struct attribute *attr,
int n)
{
@@ -373,12 +394,15 @@ static umode_t gpio_is_visible(struct kobject *kobj, struct attribute *attr,
if (attr == &dev_attr_direction.attr) {
if (!show_direction)
- mode = 0;
+ mode &= 0444;
} else if (attr == &dev_attr_edge.attr) {
if (gpiod_to_irq(desc) < 0)
mode = 0;
if (!show_direction && test_bit(FLAG_IS_OUT, &desc->flags))
mode = 0;
+ } else if (attr == &dev_attr_value.attr) {
+ if (!show_direction && !test_bit(FLAG_IS_OUT, &desc->flags))
+ mode &= 0444;
}
return mode;
@@ -389,6 +413,7 @@ static struct attribute *gpio_attrs[] = {
&dev_attr_edge.attr,
&dev_attr_value.attr,
&dev_attr_active_low.attr,
+ &dev_attr_label.attr,
NULL,
};
@@ -402,6 +427,10 @@ static const struct attribute_group *gpio_groups[] = {
NULL
};
+/* bwlegh, a second device in the same file... get out of my namespace! */
+#define dev_attr_label dev_attr_chip_label
+#define label_show chip_label_show
+
/*
* /sys/class/gpio/gpiochipN/
* /base ... matching gpio_chip.base (N)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index d9074191ed..5d3566209f 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -2355,10 +2355,10 @@ static int gpiod_request_commit(struct gpio_desc *desc, const char *label)
if (test_and_set_bit(FLAG_REQUESTED, &desc->flags) == 0) {
desc_set_label(desc, label ? : "?");
status = 0;
- } else {
- kfree_const(label);
- status = -EBUSY;
- goto done;
+// } else {
+// kfree_const(label);
+// status = -EBUSY;
+// goto done;
}
if (chip->request) {
diff --git a/drivers/hwmon/k10temp.c b/drivers/hwmon/k10temp.c
index c77e89239d..5c1dddde19 100644
--- a/drivers/hwmon/k10temp.c
+++ b/drivers/hwmon/k10temp.c
@@ -349,6 +349,7 @@ static const struct pci_device_id k10temp_id_table[] = {
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_17H_DF_F3) },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_17H_M10H_DF_F3) },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_17H_M30H_DF_F3) },
+ { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_17H_M70H_DF_F3) },
{ PCI_VDEVICE(HYGON, PCI_DEVICE_ID_AMD_17H_DF_F3) },
{}
};
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index 9b76a8fcdd..2a0f9ce8bb 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -817,6 +817,7 @@ int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
union {
struct sockaddr_in _sockaddr_in;
struct sockaddr_in6 _sockaddr_in6;
+ struct sockaddr_ib _sockaddr_ib;
} sgid_addr, dgid_addr;
int ret;
diff --git a/drivers/input/misc/tps65218-pwrbutton.c b/drivers/input/misc/tps65218-pwrbutton.c
index a4455bb12a..b6d4321d42 100644
--- a/drivers/input/misc/tps65218-pwrbutton.c
+++ b/drivers/input/misc/tps65218-pwrbutton.c
@@ -36,7 +36,7 @@ struct tps6521x_data {
static const struct tps6521x_data tps65217_data = {
.reg_status = TPS65217_REG_STATUS,
.pb_mask = TPS65217_STATUS_PB,
- .name = "tps65217_pwrbutton",
+ .name = "tps65217_pwr_but",
};
static const struct tps6521x_data tps65218_data = {
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 46bbe99d65..efa243e480 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -1342,7 +1342,9 @@ static int set_input_params(struct psmouse *psmouse,
if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
__set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
- }
+ } else if (SYN_CAP_CLICKPAD2BTN(info->ext_cap_0c) ||
+ SYN_CAP_CLICKPAD2BTN2(info->ext_cap_0c))
+ __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
return 0;
}
diff --git a/drivers/input/mouse/synaptics.h b/drivers/input/mouse/synaptics.h
index 08533d1b1b..e85f840a27 100644
--- a/drivers/input/mouse/synaptics.h
+++ b/drivers/input/mouse/synaptics.h
@@ -83,6 +83,7 @@
*/
#define SYN_CAP_CLICKPAD(ex0c) ((ex0c) & BIT(20)) /* 1-button ClickPad */
#define SYN_CAP_CLICKPAD2BTN(ex0c) ((ex0c) & BIT(8)) /* 2-button ClickPad */
+#define SYN_CAP_CLICKPAD2BTN2(ex0c) ((ex0c) & BIT(21)) /* 2-button ClickPad */
#define SYN_CAP_MAX_DIMENSIONS(ex0c) ((ex0c) & BIT(17))
#define SYN_CAP_MIN_DIMENSIONS(ex0c) ((ex0c) & BIT(13))
#define SYN_CAP_ADV_GESTURE(ex0c) ((ex0c) & BIT(19))
diff --git a/drivers/input/touchscreen/ar1021_i2c.c b/drivers/input/touchscreen/ar1021_i2c.c
index 28644f372b..230d27cbd9 100644
--- a/drivers/input/touchscreen/ar1021_i2c.c
+++ b/drivers/input/touchscreen/ar1021_i2c.c
@@ -17,6 +17,11 @@
#define AR1021_MAX_X 4095
#define AR1021_MAX_Y 4095
+#define AR1021_MAX_PRESSURE 255
+
+#define AR1021_CMD 0x55
+
+#define AR1021_CMD_ENABLE_TOUCH 0x12
#define AR1021_CMD 0x55
@@ -26,8 +31,29 @@ struct ar1021_i2c {
struct i2c_client *client;
struct input_dev *input;
u8 data[AR1021_TOCUH_PKG_SIZE];
+ bool invert_x;
+ bool invert_y;
+ bool swap_xy;
};
+static bool ar1021_get_prop_u32(struct device *dev,
+ const char *property,
+ unsigned int default_value,
+ unsigned int *value)
+{
+ u32 val;
+ int error;
+
+ error = device_property_read_u32(dev, property, &val);
+ if (error) {
+ *value = default_value;
+ return false;
+ }
+
+ *value = val;
+ return true;
+}
+
static irqreturn_t ar1021_i2c_irq(int irq, void *dev_id)
{
struct ar1021_i2c *ar1021 = dev_id;
@@ -49,9 +75,22 @@ static irqreturn_t ar1021_i2c_irq(int irq, void *dev_id)
x = ((data[2] & 0x1f) << 7) | (data[1] & 0x7f);
y = ((data[4] & 0x1f) << 7) | (data[3] & 0x7f);
- input_report_abs(input, ABS_X, x);
- input_report_abs(input, ABS_Y, y);
+ if (ar1021->invert_x)
+ x = AR1021_MAX_X - x;
+
+ if (ar1021->invert_y)
+ y = AR1021_MAX_Y - y;
+
+ if (ar1021->swap_xy) {
+ input_report_abs(input, ABS_X, y);
+ input_report_abs(input, ABS_Y, x);
+ } else {
+ input_report_abs(input, ABS_X, x);
+ input_report_abs(input, ABS_Y, y);
+ }
+
input_report_key(input, BTN_TOUCH, button);
+ input_report_abs(input, ABS_PRESSURE, AR1021_MAX_PRESSURE);
input_sync(input);
out:
@@ -93,6 +132,8 @@ static int ar1021_i2c_probe(struct i2c_client *client,
struct ar1021_i2c *ar1021;
struct input_dev *input;
int error;
+ unsigned int offset_x, offset_y;
+ bool data_present;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
dev_err(&client->dev, "i2c_check_functionality error\n");
@@ -116,10 +157,44 @@ static int ar1021_i2c_probe(struct i2c_client *client,
input->open = ar1021_i2c_open;
input->close = ar1021_i2c_close;
+ ar1021->invert_x = device_property_read_bool(&client->dev, "touchscreen-inverted-x");
+ ar1021->invert_y = device_property_read_bool(&client->dev, "touchscreen-inverted-y");
+ ar1021->swap_xy = device_property_read_bool(&client->dev, "touchscreen-swapped-x-y");
+
+ data_present = ar1021_get_prop_u32(&client->dev,
+ "touchscreen-offset-x",
+ 0,
+ &offset_x);
+
+ if (data_present)
+ dev_info(&client->dev, "touchscreen-offset-x: %d\n", offset_x);
+
+ data_present = ar1021_get_prop_u32(&client->dev,
+ "touchscreen-offset-y",
+ 0,
+ &offset_y);
+
+ if (data_present)
+ dev_info(&client->dev, "touchscreen-offset-y: %d\n", offset_y);
+
__set_bit(INPUT_PROP_DIRECT, input->propbit);
- input_set_capability(input, EV_KEY, BTN_TOUCH);
- input_set_abs_params(input, ABS_X, 0, AR1021_MAX_X, 0, 0);
- input_set_abs_params(input, ABS_Y, 0, AR1021_MAX_Y, 0, 0);
+ //input_set_capability(input, EV_KEY, BTN_TOUCH);
+
+ input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+ input->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+
+ if(ar1021->swap_xy)
+ {
+ input_set_abs_params(input, ABS_X, 0, AR1021_MAX_Y, 0, 0);
+ input_set_abs_params(input, ABS_Y, 0, AR1021_MAX_X, 0, 0);
+ }
+ else
+ {
+ input_set_abs_params(input, ABS_X, offset_x, AR1021_MAX_X-offset_x, 0, 0);
+ input_set_abs_params(input, ABS_Y, offset_y, AR1021_MAX_Y-offset_y, 0, 0);
+ }
+
+ input_set_abs_params(input, ABS_PRESSURE, 0, AR1021_MAX_PRESSURE, 0, 0);
input_set_drvdata(input, ar1021);
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index bc94bd1bcb..d4bc28dcec 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -2142,7 +2142,7 @@ static int mxt_initialize(struct mxt_data *data)
if (error)
return error;
- error = reject_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME,
+ error = request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME,
&client->dev, GFP_KERNEL, data,
mxt_config_cb);
if (error) {
diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index 83e685557a..dd358bff4a 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -34,6 +34,7 @@
#define ADCFSM_STEPID 0x10
#define SEQ_SETTLE 275
#define MAX_12BIT ((1 << 12) - 1)
+#define PRESSURE_MAX 1000
#define TSC_IRQENB_MASK (IRQENB_FIFO0THRES | IRQENB_EOS | IRQENB_HW_PEN)
@@ -234,6 +235,7 @@ static void titsc_read_coordinates(struct titsc *ts_dev,
for (i = 0; i < creads; i++) {
xvals[i] = titsc_readl(ts_dev, REG_FIFO0);
xvals[i] &= 0xfff;
+ pr_debug("i %d xval %d yval %d z1 %d z2 %d\n", i, xvals[i], yvals[i], *z1, *z2);
}
/*
@@ -312,13 +314,13 @@ static irqreturn_t titsc_irq(int irq, void *dev)
* Resistance(touch) = x plate resistance *
* x postion/4096 * ((z2 / z1) - 1)
*/
- z = z1 - z2;
+ z = z2 - z1;
z *= x;
z *= ts_dev->x_plate_resistance;
- z /= z2;
+ z /= z1;
z = (z + 2047) >> 12;
-
- if (z <= MAX_12BIT) {
+ pr_debug("x %d y %d z1 %d z2 %d z %d\n", x, y, z1, z2, z);
+ if (z <= PRESSURE_MAX) {
input_report_abs(input_dev, ABS_X, x);
input_report_abs(input_dev, ABS_Y, y);
input_report_abs(input_dev, ABS_PRESSURE, z);
@@ -459,6 +461,7 @@ static int titsc_probe(struct platform_device *pdev)
input_dev->name = "ti-tsc";
input_dev->dev.parent = &pdev->dev;
+ __set_bit(INPUT_PROP_DIRECT, input_dev->propbit);
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig
index 574e122ae1..bd4d86fc82 100644
--- a/drivers/macintosh/Kconfig
+++ b/drivers/macintosh/Kconfig
@@ -149,6 +149,13 @@ config INPUT_ADBHID
If unsure, say Y.
+config ADB_TRACKPAD_ABSOLUTE
+ bool "Enable absolute mode for adb trackpads"
+ depends on INPUT_ADBHID
+ help
+ Enable absolute mode in adb-base trackpads. This feature adds
+ compatibility with synaptics Xorg / Xfree drivers.
+
config MAC_EMUMOUSEBTN
tristate "Support for mouse button 2+3 emulation"
depends on SYSCTL && INPUT
diff --git a/drivers/macintosh/adbhid.c b/drivers/macintosh/adbhid.c
index 75482eeab2..13f9321e06 100644
--- a/drivers/macintosh/adbhid.c
+++ b/drivers/macintosh/adbhid.c
@@ -262,6 +262,15 @@ static struct adb_ids buttons_ids;
#define ADBMOUSE_MS_A3 8 /* Mouse systems A3 trackball (handler 3) */
#define ADBMOUSE_MACALLY2 9 /* MacAlly 2-button mouse */
+#ifdef CONFIG_ADB_TRACKPAD_ABSOLUTE
+#define ABS_XMIN 310
+#define ABS_XMAX 1700
+#define ABS_YMIN 200
+#define ABS_YMAX 1000
+#define ABS_ZMIN 0
+#define ABS_ZMAX 55
+#endif
+
static void
adbhid_keyboard_input(unsigned char *data, int nb, int apoll)
{
@@ -405,6 +414,9 @@ static void
adbhid_mouse_input(unsigned char *data, int nb, int autopoll)
{
int id = (data[0] >> 4) & 0x0f;
+#ifdef CONFIG_ADB_TRACKPAD_ABSOLUTE
+ int btn = 0; int x_axis = 0; int y_axis = 0; int z_axis = 0;
+#endif
if (!adbhid[id]) {
pr_err("ADB HID on ID %d not yet registered\n", id);
@@ -436,6 +448,17 @@ adbhid_mouse_input(unsigned char *data, int nb, int autopoll)
high bits of y-axis motion. XY is additional
high bits of x-axis motion.
+ For ADB Absolute motion protocol the data array will contain the
+ following values:
+
+ BITS COMMENTS
+ data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd.
+ data[1] = byyy yyyy Left button and y-axis motion.
+ data[2] = bxxx xxxx Second button and x-axis motion.
+ data[3] = 1yyy 1xxx Half bits of y-axis and x-axis motion.
+ data[4] = 1yyy 1xxx Higher bits of y-axis and x-axis motion.
+ data[5] = 1zzz 1zzz Higher and lower bits of z-pressure.
+
MacAlly 2-button mouse protocol.
For MacAlly 2-button mouse protocol the data array will contain the
@@ -458,8 +481,17 @@ adbhid_mouse_input(unsigned char *data, int nb, int autopoll)
switch (adbhid[id]->mouse_kind)
{
case ADBMOUSE_TRACKPAD:
+#ifdef CONFIG_ADB_TRACKPAD_ABSOLUTE
+ x_axis = (data[2] & 0x7f) | ((data[3] & 0x07) << 7) |
+ ((data[4] & 0x07) << 10);
+ y_axis = (data[1] & 0x7f) | ((data[3] & 0x70) << 3) |
+ ((data[4] & 0x70) << 6);
+ z_axis = (data[5] & 0x07) | ((data[5] & 0x70) >> 1);
+ btn = (!(data[1] >> 7)) & 1;
+#else
data[1] = (data[1] & 0x7f) | ((data[1] & data[2]) & 0x80);
data[2] = data[2] | 0x80;
+#endif
break;
case ADBMOUSE_MICROSPEED:
data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7);
@@ -485,17 +517,39 @@ adbhid_mouse_input(unsigned char *data, int nb, int autopoll)
break;
}
- input_report_key(adbhid[id]->input, BTN_LEFT, !((data[1] >> 7) & 1));
- input_report_key(adbhid[id]->input, BTN_MIDDLE, !((data[2] >> 7) & 1));
+#ifdef CONFIG_ADB_TRACKPAD_ABSOLUTE
+ if ( adbhid[id]->mouse_kind == ADBMOUSE_TRACKPAD ) {
- if (nb >= 4 && adbhid[id]->mouse_kind != ADBMOUSE_TRACKPAD)
- input_report_key(adbhid[id]->input, BTN_RIGHT, !((data[3] >> 7) & 1));
+ if(z_axis > 30) input_report_key(adbhid[id]->input, BTN_TOUCH, 1);
+ if(z_axis < 25) input_report_key(adbhid[id]->input, BTN_TOUCH, 0);
- input_report_rel(adbhid[id]->input, REL_X,
- ((data[2]&0x7f) < 64 ? (data[2]&0x7f) : (data[2]&0x7f)-128 ));
- input_report_rel(adbhid[id]->input, REL_Y,
- ((data[1]&0x7f) < 64 ? (data[1]&0x7f) : (data[1]&0x7f)-128 ));
+ if(z_axis > 0){
+ input_report_abs(adbhid[id]->input, ABS_X, x_axis);
+ input_report_abs(adbhid[id]->input, ABS_Y, y_axis);
+ input_report_key(adbhid[id]->input, BTN_TOOL_FINGER, 1);
+ input_report_key(adbhid[id]->input, ABS_TOOL_WIDTH, 5);
+ } else {
+ input_report_key(adbhid[id]->input, BTN_TOOL_FINGER, 0);
+ input_report_key(adbhid[id]->input, ABS_TOOL_WIDTH, 0);
+ }
+
+ input_report_abs(adbhid[id]->input, ABS_PRESSURE, z_axis);
+ input_report_key(adbhid[id]->input, BTN_LEFT, btn);
+ } else {
+#endif
+ input_report_key(adbhid[id]->input, BTN_LEFT, !((data[1] >> 7) & 1));
+ input_report_key(adbhid[id]->input, BTN_MIDDLE, !((data[2] >> 7) & 1));
+
+ if (nb >= 4 && adbhid[id]->mouse_kind != ADBMOUSE_TRACKPAD)
+ input_report_key(adbhid[id]->input, BTN_RIGHT, !((data[3] >> 7) & 1));
+ input_report_rel(adbhid[id]->input, REL_X,
+ ((data[2]&0x7f) < 64 ? (data[2]&0x7f) : (data[2]&0x7f)-128 ));
+ input_report_rel(adbhid[id]->input, REL_Y,
+ ((data[1]&0x7f) < 64 ? (data[1]&0x7f) : (data[1]&0x7f)-128 ));
+#ifdef CONFIG_ADB_TRACKPAD_ABSOLUTE
+ }
+#endif
input_sync(adbhid[id]->input);
}
@@ -850,6 +904,15 @@ adbhid_input_register(int id, int default_id, int original_handler_id,
input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
+#ifdef CONFIG_ADB_TRACKPAD_ABSOLUTE
+ set_bit(EV_ABS, input_dev->evbit);
+ input_set_abs_params(input_dev, ABS_X, ABS_XMIN, ABS_XMAX, 0, 0);
+ input_set_abs_params(input_dev, ABS_Y, ABS_YMIN, ABS_YMAX, 0, 0);
+ input_set_abs_params(input_dev, ABS_PRESSURE, ABS_ZMIN, ABS_ZMAX, 0, 0);
+ set_bit(BTN_TOUCH, input_dev->keybit);
+ set_bit(BTN_TOOL_FINGER, input_dev->keybit);
+ set_bit(ABS_TOOL_WIDTH, input_dev->absbit);
+#endif
break;
case ADB_MISC:
@@ -1128,7 +1191,11 @@ init_trackpad(int id)
r1_buffer[3],
r1_buffer[4],
r1_buffer[5],
+#ifdef CONFIG_ADB_TRACKPAD_ABSOLUTE
+ 0x00, /* Enable absolute mode */
+#else
0x03, /*r1_buffer[6],*/
+#endif
r1_buffer[7]);
/* Without this flush, the trackpad may be locked up */
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 16900357af..12378b010e 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -488,6 +488,13 @@ config PVPANIC
a paravirtualized device provided by QEMU; it lets a virtual machine
(guest) communicate panic events to the host.
+config UDOO_ARD
+ tristate "UDOO-Arduino erase/reset Driver"
+ default y
+ help
+ This driver is used to erase and reset arduino board via command sent
+ over USB-to-SERIAL connection.
+
source "drivers/misc/c2port/Kconfig"
source "drivers/misc/eeprom/Kconfig"
source "drivers/misc/cb710/Kconfig"
@@ -498,6 +505,7 @@ source "drivers/misc/mei/Kconfig"
source "drivers/misc/vmw_vmci/Kconfig"
source "drivers/misc/mic/Kconfig"
source "drivers/misc/genwqe/Kconfig"
+source "drivers/misc/cape/Kconfig"
source "drivers/misc/echo/Kconfig"
source "drivers/misc/cxl/Kconfig"
source "drivers/misc/ocxl/Kconfig"
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index abd8ae2497..13e132dd62 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -50,9 +50,11 @@ obj-$(CONFIG_SRAM) += sram.o
obj-$(CONFIG_SRAM_EXEC) += sram-exec.o
obj-y += mic/
obj-$(CONFIG_GENWQE) += genwqe/
+obj-y += cape/
obj-$(CONFIG_ECHO) += echo/
obj-$(CONFIG_VEXPRESS_SYSCFG) += vexpress-syscfg.o
obj-$(CONFIG_CXL_BASE) += cxl/
+obj-$(CONFIG_UDOO_ARD) += udoo_ard.o
obj-$(CONFIG_PCI_ENDPOINT_TEST) += pci_endpoint_test.o
obj-$(CONFIG_OCXL) += ocxl/
obj-y += cardreader/
diff --git a/drivers/misc/cape/Kconfig b/drivers/misc/cape/Kconfig
new file mode 100644
index 0000000000..a2ef85e041
--- /dev/null
+++ b/drivers/misc/cape/Kconfig
@@ -0,0 +1,5 @@
+#
+# Capes
+#
+
+source "drivers/misc/cape/beaglebone/Kconfig"
diff --git a/drivers/misc/cape/Makefile b/drivers/misc/cape/Makefile
new file mode 100644
index 0000000000..7c4eb96ab2
--- /dev/null
+++ b/drivers/misc/cape/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for cape like devices
+#
+
+obj-y += beaglebone/
diff --git a/drivers/misc/cape/beaglebone/Kconfig b/drivers/misc/cape/beaglebone/Kconfig
new file mode 100644
index 0000000000..eeb67828fd
--- /dev/null
+++ b/drivers/misc/cape/beaglebone/Kconfig
@@ -0,0 +1,10 @@
+#
+# Beaglebone capes
+#
+
+config BEAGLEBONE_PINMUX_HELPER
+ tristate "Beaglebone Pinmux Helper"
+ depends on ARCH_OMAP2PLUS && OF
+ default n
+ help
+ Say Y here to include support for the pinmux helper
diff --git a/drivers/misc/cape/beaglebone/Makefile b/drivers/misc/cape/beaglebone/Makefile
new file mode 100644
index 0000000000..7f4617a01e
--- /dev/null
+++ b/drivers/misc/cape/beaglebone/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for beaglebone capes
+#
+
+obj-$(CONFIG_BEAGLEBONE_PINMUX_HELPER) += bone-pinmux-helper.o
diff --git a/drivers/misc/cape/beaglebone/bone-pinmux-helper.c b/drivers/misc/cape/beaglebone/bone-pinmux-helper.c
new file mode 100644
index 0000000000..d81363a77b
--- /dev/null
+++ b/drivers/misc/cape/beaglebone/bone-pinmux-helper.c
@@ -0,0 +1,242 @@
+/*
+ * Pinmux helper driver
+ *
+ * Copyright (C) 2013 Pantelis Antoniou <panto@antoniou-consulting.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/slab.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/consumer.h>
+
+static const struct of_device_id bone_pinmux_helper_of_match[] = {
+ {
+ .compatible = "bone-pinmux-helper",
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, bone_pinmux_helper_of_match);
+
+struct pinmux_helper_data {
+ struct pinctrl *pinctrl;
+ char *selected_state_name;
+};
+
+static ssize_t pinmux_helper_show_state(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct pinmux_helper_data *data = platform_get_drvdata(pdev);
+ const char *name;
+
+ name = data->selected_state_name;
+ if (name == NULL || strlen(name) == 0)
+ name = "none";
+ return sprintf(buf, "%s\n", name);
+}
+
+static ssize_t pinmux_helper_store_state(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct pinmux_helper_data *data = platform_get_drvdata(pdev);
+ struct pinctrl_state *state;
+ char *state_name;
+ char *s;
+ int err;
+
+ /* duplicate (as a null terminated string) */
+ state_name = kmalloc(count + 1, GFP_KERNEL);
+ if (state_name == NULL)
+ return -ENOMEM;
+ memcpy(state_name, buf, count);
+ state_name[count] = '\0';
+
+ /* and chop off newline */
+ s = strchr(state_name, '\n');
+ if (s != NULL)
+ *s = '\0';
+
+ /* try to select default state at first (if it exists) */
+ state = pinctrl_lookup_state(data->pinctrl, state_name);
+ if (!IS_ERR(state)) {
+ err = pinctrl_select_state(data->pinctrl, state);
+ if (err != 0)
+ dev_err(dev, "Failed to select state %s\n",
+ state_name);
+ } else {
+ dev_err(dev, "Failed to find state %s\n", state_name);
+ err = PTR_RET(state);
+ }
+
+ if (err == 0) {
+ kfree(data->selected_state_name);
+ data->selected_state_name = state_name;
+ }
+
+ return err ? err : count;
+}
+
+static DEVICE_ATTR(state, S_IWUSR | S_IRUGO,
+ pinmux_helper_show_state, pinmux_helper_store_state);
+
+static struct attribute *pinmux_helper_attributes[] = {
+ &dev_attr_state.attr,
+ NULL
+};
+
+static const struct attribute_group pinmux_helper_attr_group = {
+ .attrs = pinmux_helper_attributes,
+};
+
+static int bone_pinmux_helper_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct pinmux_helper_data *data;
+ struct pinctrl_state *state;
+ char *state_name;
+ const char *mode_name;
+ int mode_len;
+ int err;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+ if (data == NULL) {
+ dev_err(dev, "Failed to allocate data\n");
+ err = -ENOMEM;
+ goto err_no_mem;
+ }
+
+ state_name = kmalloc(strlen(PINCTRL_STATE_DEFAULT) + 1,
+ GFP_KERNEL);
+ if (state_name == NULL) {
+ dev_err(dev, "Failed to allocate state name\n");
+ err = -ENOMEM;
+ goto err_no_state_mem;
+ }
+ data->selected_state_name = state_name;
+ strcpy(data->selected_state_name, PINCTRL_STATE_DEFAULT);
+
+ platform_set_drvdata(pdev, data);
+
+ data->pinctrl = devm_pinctrl_get(dev);
+ if (IS_ERR(data->pinctrl)) {
+ dev_err(dev, "Failed to get pinctrl\n");
+ err = PTR_RET(data->pinctrl);
+ goto err_no_pinctrl;
+ }
+
+ /* See if an initial mode is specified in the device tree */
+ mode_name = of_get_property(dev->of_node, "mode", &mode_len);
+
+ err = -1;
+ if (mode_name != NULL ) {
+ state_name = kmalloc(mode_len + 1, GFP_KERNEL);
+ if (state_name == NULL) {
+ dev_err(dev, "Failed to allocate state name\n");
+ err = -ENOMEM;
+ goto err_no_mode_mem;
+ }
+ strncpy(state_name, mode_name, mode_len);
+
+ /* try to select requested mode */
+ state = pinctrl_lookup_state(data->pinctrl, state_name);
+ if (!IS_ERR(state)) {
+ err = pinctrl_select_state(data->pinctrl, state);
+ if (err != 0) {
+ dev_warn(dev, "Unable to select requested mode %s\n", state_name);
+ kfree(state_name);
+ } else {
+ kfree(data->selected_state_name);
+ data->selected_state_name = state_name;
+ dev_notice(dev, "Set initial pinmux mode to %s\n", state_name);
+ }
+ }
+ }
+
+ /* try to select default state if mode_name failed */
+ if ( err != 0) {
+ state = pinctrl_lookup_state(data->pinctrl,
+ data->selected_state_name);
+ if (!IS_ERR(state)) {
+ err = pinctrl_select_state(data->pinctrl, state);
+ if (err != 0) {
+ dev_err(dev, "Failed to select default state\n");
+ goto err_no_state;
+ }
+ } else {
+ data->selected_state_name = '\0';
+ }
+ }
+
+ /* Register sysfs hooks */
+ err = sysfs_create_group(&dev->kobj, &pinmux_helper_attr_group);
+ if (err) {
+ dev_err(dev, "Failed to create sysfs group\n");
+ goto err_no_sysfs;
+ }
+
+ return 0;
+
+err_no_sysfs:
+err_no_state:
+err_no_mode_mem:
+ devm_pinctrl_put(data->pinctrl);
+err_no_pinctrl:
+ devm_kfree(dev, data->selected_state_name);
+err_no_state_mem:
+ devm_kfree(dev, data);
+err_no_mem:
+ return err;
+}
+
+static int bone_pinmux_helper_remove(struct platform_device *pdev)
+{
+ struct pinmux_helper_data *data = platform_get_drvdata(pdev);
+ struct device *dev = &pdev->dev;
+
+ sysfs_remove_group(&dev->kobj, &pinmux_helper_attr_group);
+ kfree(data->selected_state_name);
+ devm_pinctrl_put(data->pinctrl);
+ devm_kfree(dev, data);
+
+ return 0;
+}
+
+struct platform_driver bone_pinmux_helper_driver = {
+ .probe = bone_pinmux_helper_probe,
+ .remove = bone_pinmux_helper_remove,
+ .driver = {
+ .name = "bone-pinmux-helper",
+ .owner = THIS_MODULE,
+ .of_match_table = bone_pinmux_helper_of_match,
+ },
+};
+
+module_platform_driver(bone_pinmux_helper_driver);
+
+MODULE_AUTHOR("Pantelis Antoniou");
+MODULE_DESCRIPTION("Beaglebone pinmux helper driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:bone-pinmux-helper");
diff --git a/drivers/misc/udoo_ard.c b/drivers/misc/udoo_ard.c
new file mode 100755
index 0000000000..2210738e09
--- /dev/null
+++ b/drivers/misc/udoo_ard.c
@@ -0,0 +1,417 @@
+/*
+ * udoo_ard.c
+ * UDOO quad/dual Arduino flash erase / CPU resetter
+ *
+ * Copyright (C) 2013-2015 Aidilab srl
+ * Author: UDOO Team <social@udoo.org>
+ * Author: Giuseppe Pagano <giuseppe.pagano@seco.com>
+ * Author: Francesco Montefoschi <francesco.monte@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/errno.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/sched.h>
+#include <linux/sched/clock.h>
+#include <linux/kernel.h>
+#include <linux/workqueue.h>
+#include <linux/fs.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_gpio.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/uaccess.h>
+
+#define DRIVER_NAME "udoo_ard"
+#define PINCTRL_DEFAULT "default"
+#define AUTH_TOKEN 0x5A5A
+#define MAX_MSEC_SINCE_LAST_IRQ 400
+#define GRAY_TIME_BETWEEN_RESET 10000 // In this time we can't accept new erase/reset code
+
+static struct workqueue_struct *erase_reset_wq;
+typedef struct {
+ struct work_struct erase_reset_work;
+ struct pinctrl *pinctrl;
+ struct pinctrl_state *pins_default;
+ int step;
+ int cmdcode;
+ int erase_reset_lock;
+ int gpio_bossac_clk;
+ int gpio_bossac_dat;
+ int gpio_ard_erase;
+ int gpio_ard_reset;
+ unsigned long last_int_time_in_ns;
+ unsigned long last_int_time_in_sec;
+} erase_reset_work_t;
+
+erase_reset_work_t *work;
+static u32 origTX, origRX; // original UART4 TX/RX pad control registers
+static int major; // for /dev/udoo_ard
+static struct class *udoo_class;
+
+static struct platform_device_id udoo_ard_devtype[] = {
+ {
+ /* keep it for coldfire */
+ .name = DRIVER_NAME,
+ .driver_data = 0,
+ }, {
+ /* sentinel */
+ }
+};
+MODULE_DEVICE_TABLE(platform, udoo_ard_devtype);
+
+static const struct of_device_id udoo_ard_dt_ids[] = {
+ { .compatible = "udoo,imx6q-udoo-ard", .data = &udoo_ard_devtype[0], },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, udoo_ard_dt_ids);
+
+static void disable_serial(void)
+{
+ u32 addrTX;
+ void __iomem *_addrTX;
+
+ printk("[bossac] Disable UART4 serial port.\n");
+
+ addrTX = 0x20E01F8;
+ _addrTX = ioremap(addrTX, 8);
+
+ origTX = __raw_readl(_addrTX);
+ origRX = __raw_readl(_addrTX + 0x4);
+
+ __raw_writel(0x15, _addrTX);
+ __raw_writel(0x15, _addrTX + 0x4);
+
+ iounmap(_addrTX);
+}
+
+static void enable_serial(void)
+{
+ u32 addrTX;
+ void __iomem *_addrTX;
+
+ printk("[bossac] Enable UART4 serial port.\n");
+
+ addrTX = 0x20E01F8;
+ _addrTX = ioremap(addrTX, 8);
+
+ __raw_writel(origTX, _addrTX);
+ __raw_writel(origRX, _addrTX + 0x4);
+
+ iounmap(_addrTX);
+}
+
+static void erase_reset(void)
+{
+ printk("[bossac] UDOO ERASE and RESET on Sam3x started.\n");
+
+ gpio_direction_input(work->gpio_ard_erase);
+ gpio_set_value(work->gpio_ard_reset, 1);
+ msleep(1);
+
+ gpio_direction_output(work->gpio_ard_erase, 1);
+ msleep(300);
+ gpio_direction_input(work->gpio_ard_erase);
+
+ msleep(10);
+ gpio_set_value(work->gpio_ard_reset, 0);
+
+ msleep(80);
+ gpio_set_value(work->gpio_ard_reset, 1);
+
+ printk("[bossac] UDOO ERASE and RESET on Sam3x EXECUTED.\n");
+}
+
+static void shutdown_sam3x(void)
+{
+ printk("[bossac] RESET on Sam3x.\n");
+
+ gpio_set_value(work->gpio_ard_reset, 0);
+}
+
+static void erase_reset_wq_function( struct work_struct *work2)
+{
+ disable_serial();
+ erase_reset();
+ msleep(GRAY_TIME_BETWEEN_RESET);
+
+ work->erase_reset_lock = 0;
+}
+
+/*
+ * Called everytime the gpio_bossac_clk signal toggles.
+ * If the auth token (16 bit) is found, we look for the command code (4 bit).
+ * The code 0x0F is sent by Bossac to trigger an erase/reset (to achieve this,
+ * erase_reset_wq is scheduled). Before starting to program the flash, we disable
+ * the UART4 serial port, otherwise there is too noise on the serial lines (the
+ * programming port and UART4 port are connected together, see hw schematics).
+ * When Bossac finishes to flash/verify, the code 0x00 is sent which re-enables
+ * the UART4 port.
+ */
+static irqreturn_t udoo_bossac_req(int irq, void *dev_id)
+{
+ int retval, auth_bit, expected_bit, msec_since_last_irq;
+ u64 nowsec;
+ unsigned long rem_nsec;
+ erase_reset_work_t *erase_reset_work;
+
+ auth_bit = 0;
+ if (gpio_get_value(work->gpio_bossac_dat) != 0x0) {
+ auth_bit = 1;
+ }
+
+ erase_reset_work = (erase_reset_work_t *)work;
+
+ nowsec = local_clock();
+ rem_nsec = do_div(nowsec, 1000000000) ;
+ msec_since_last_irq = (((unsigned long)nowsec * 1000) + rem_nsec/1000000 ) - (((unsigned long)erase_reset_work->last_int_time_in_sec * 1000) + erase_reset_work->last_int_time_in_ns/1000000);
+
+ if (msec_since_last_irq > MAX_MSEC_SINCE_LAST_IRQ) {
+ erase_reset_work->step = 0;
+#ifdef DEBUG
+ printk("[bossac] Reset authentication timeout!\n");
+#endif
+ }
+
+#ifdef DEBUG
+ printk("[bossac] STEP %d -> 0x%d \n", erase_reset_work->step, auth_bit);
+#endif
+ erase_reset_work->last_int_time_in_ns = rem_nsec;
+ erase_reset_work->last_int_time_in_sec = nowsec;
+
+ if ( erase_reset_work->step < 16 ) { // Authenticating received token bit.
+ expected_bit = (( AUTH_TOKEN >> erase_reset_work->step ) & 0x01 );
+ if ( auth_bit == expected_bit ) {
+ erase_reset_work->step = erase_reset_work->step + 1;
+ } else {
+ erase_reset_work->step = 0;
+ }
+ } else { // Passed all authentication step. Receiving command code.
+ erase_reset_work->cmdcode = erase_reset_work->cmdcode | (auth_bit << (erase_reset_work->step - 16));
+ erase_reset_work->step = erase_reset_work->step + 1;
+ }
+
+#ifdef DEBUG
+ printk("erase_reset_work->erase_reset_lock = %d \n", erase_reset_work->erase_reset_lock);
+#endif
+ if ( erase_reset_work->step == 20 ) { // Passed authentication and code acquiring step.
+#ifdef DEBUG
+ printk("[bossac] Received code = 0x%04x \n", erase_reset_work->cmdcode);
+#endif
+ if (erase_reset_work->cmdcode == 0xF) {
+ if (erase_reset_work->erase_reset_lock == 0) {
+ erase_reset_work->erase_reset_lock = 1;
+ retval = queue_work( erase_reset_wq, (struct work_struct *)work );
+ } else {
+#ifdef DEBUG
+ printk("Erase and reset operation already in progress. Do nothing.\n");
+#endif
+ }
+ } else {
+ enable_serial();
+ }
+ erase_reset_work->step = 0;
+ erase_reset_work->cmdcode = 0;
+ }
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * Takes control of clock, data, erase, reset GPIOs.
+ */
+static int gpio_setup(void)
+{
+ int ret;
+
+ ret = gpio_request(work->gpio_bossac_clk, "BOSSA_CLK");
+ if (ret) {
+ printk(KERN_ERR "request BOSSA_CLK IRQ\n");
+ return -1;
+ } else {
+ gpio_direction_input(work->gpio_bossac_clk);
+ }
+
+ ret = gpio_request(work->gpio_bossac_dat, "BOSSA_DAT");
+ if (ret) {
+ printk(KERN_ERR "request BOSSA_DAT IRQ\n");
+ return -1;
+ } else {
+ gpio_direction_input(work->gpio_bossac_dat);
+ }
+
+ ret = gpio_request(work->gpio_ard_erase, "BOSSAC");
+ if (ret) {
+ printk(KERN_ERR "request GPIO FOR ARDUINO ERASE\n");
+ return -1;
+ } else {
+ gpio_direction_input(work->gpio_ard_erase);
+ }
+
+ ret = gpio_request(work->gpio_ard_reset, "BOSSAC");
+ if (ret) {
+ printk(KERN_ERR "request GPIO FOR ARDUINO RESET\n");
+ return -1;
+ } else {
+ gpio_direction_output(work->gpio_ard_reset, 1);
+ }
+
+ return 0;
+}
+
+static ssize_t device_write(struct file *filp, const char *buff, size_t len, loff_t *off)
+{
+ char msg[10];
+ long res;
+
+ if (len > 10)
+ return -EINVAL;
+
+
+ res = copy_from_user(msg, buff, len);
+ if (res) {
+ return -EFAULT;
+ }
+ msg[len] = '\0';
+
+ if (strcmp(msg, "erase")==0) {
+ erase_reset();
+ } else if (strcmp(msg, "shutdown")==0) {
+ shutdown_sam3x();
+ } else if (strcmp(msg, "uartoff")==0) {
+ disable_serial();
+ } else if (strcmp(msg, "uarton")==0) {
+ enable_serial();
+ } else {
+ printk("[bossac] udoo_ard invalid operation! %s", msg);
+ }
+
+ return len;
+}
+
+static struct file_operations fops = {
+ .write = device_write,
+};
+
+/*
+ * If a fdt udoo_ard entry is found, we register an IRQ on bossac clock line
+ * and we create /dev/udoo_ard
+ */
+static int udoo_ard_probe(struct platform_device *pdev)
+{
+ int retval;
+ struct device *temp_class;
+ struct platform_device *bdev;
+ struct device_node *np;
+
+ bdev = kzalloc(sizeof(*bdev), GFP_KERNEL);
+ np = pdev->dev.of_node;
+
+ if (!np)
+ return -ENODEV;
+
+ work = (erase_reset_work_t *)kmalloc(sizeof(erase_reset_work_t), GFP_KERNEL);
+ if (work) {
+ work->gpio_ard_reset = of_get_named_gpio(np, "bossac-reset-gpio", 0);
+ work->gpio_ard_erase = of_get_named_gpio(np, "bossac-erase-gpio", 0);
+ work->gpio_bossac_clk = of_get_named_gpio(np, "bossac-clk-gpio", 0);
+ work->gpio_bossac_dat = of_get_named_gpio(np, "bossac-dat-gpio", 0);
+ work->pinctrl = devm_pinctrl_get(&pdev->dev);
+ work->pins_default = pinctrl_lookup_state(work->pinctrl, PINCTRL_DEFAULT);
+ } else {
+ printk("[bossac] Failed to allocate data structure.");
+ return -ENOMEM;
+ }
+
+ pinctrl_select_state(work->pinctrl, work->pins_default);
+ gpio_setup();
+
+ printk("[bossac] Registering IRQ %d for BOSSAC Arduino erase/reset operation\n", gpio_to_irq(work->gpio_bossac_clk));
+ retval = request_irq(gpio_to_irq(work->gpio_bossac_clk), udoo_bossac_req, IRQF_TRIGGER_FALLING, "UDOO", bdev);
+
+ major = register_chrdev(major, "udoo_ard", &fops);
+ if (major < 0) {
+ printk(KERN_ERR "[bossac] Cannot get major for UDOO Ard\n");
+ return -EBUSY;
+ }
+
+ udoo_class = class_create(THIS_MODULE, "udoo_ard");
+ if (IS_ERR(udoo_class)) {
+ return PTR_ERR(udoo_class);
+ }
+
+ temp_class = device_create(udoo_class, NULL, MKDEV(major, 0), NULL, "udoo_ard");
+ if (IS_ERR(temp_class)) {
+ return PTR_ERR(temp_class);
+ }
+
+ printk("[bossac] Created device file /dev/udoo_ard\n");
+
+ erase_reset_wq = create_workqueue("erase_reset_queue");
+ if (erase_reset_wq) {
+
+ /* Queue some work (item 1) */
+ if (work) {
+ INIT_WORK( (struct work_struct *)work, erase_reset_wq_function );
+ work->step = 1;
+ work->cmdcode = 0;
+ work->last_int_time_in_ns = 0;
+ work->last_int_time_in_sec = 0;
+ work->erase_reset_lock = 0;
+ // retval = queue_work( erase_reset_wq, (struct work_struct *)work );
+ }
+ }
+ return 0;
+}
+
+static int udoo_ard_remove(struct platform_device *pdev)
+{
+ printk("[bossac] Unloading UDOO ard driver.\n");
+ free_irq(gpio_to_irq(work->gpio_bossac_clk), NULL);
+
+ gpio_free(work->gpio_ard_reset);
+ gpio_free(work->gpio_ard_erase);
+ gpio_free(work->gpio_bossac_clk);
+ gpio_free(work->gpio_bossac_dat);
+
+ device_destroy(udoo_class, MKDEV(major, 0));
+ class_destroy(udoo_class);
+ unregister_chrdev(major, "udoo_ard");
+
+ return 0;
+}
+
+static struct platform_driver udoo_ard_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = udoo_ard_dt_ids,
+ },
+ .id_table = udoo_ard_devtype,
+ .probe = udoo_ard_probe,
+ .remove = udoo_ard_remove,
+};
+
+module_platform_driver(udoo_ard_driver);
+
+MODULE_ALIAS("platform:"DRIVER_NAME);
+MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c
index 74a0a7fbbf..92eadb1167 100644
--- a/drivers/mmc/host/mvsdio.c
+++ b/drivers/mmc/host/mvsdio.c
@@ -90,7 +90,7 @@ static int mvsd_setup_data(struct mvsd_host *host, struct mmc_data *data)
tmout_index = fls(tmout - 1) - 12;
if (tmout_index < 0)
tmout_index = 0;
- if (tmout_index > MVSD_HOST_CTRL_TMOUT_MAX)
+// if (tmout_index > MVSD_HOST_CTRL_TMOUT_MAX) //by steven, try to setup the timeout to maximum value
tmout_index = MVSD_HOST_CTRL_TMOUT_MAX;
dev_dbg(host->dev, "data %s at 0x%08x: blocks=%d blksz=%d tmout=%u (%d)\n",
@@ -613,6 +613,8 @@ static void mvsd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
u32 m = DIV_ROUND_UP(host->base_clock, ios->clock) - 1;
if (m > MVSD_BASE_DIV_MAX)
m = MVSD_BASE_DIV_MAX;
+ if(ios->clock==50000000 ) //by steven
+ m=1;
mvsd_write(MVSD_CLK_DIV, m);
host->clock = ios->clock;
host->ns_per_clk = 1000000000 / (host->base_clock / (m+1));
diff --git a/drivers/net/ethernet/ti/davinci_mdio.c b/drivers/net/ethernet/ti/davinci_mdio.c
index 38b7f6d357..4e6b814fc9 100644
--- a/drivers/net/ethernet/ti/davinci_mdio.c
+++ b/drivers/net/ethernet/ti/davinci_mdio.c
@@ -92,6 +92,10 @@ struct davinci_mdio_data {
u32 clk_div;
};
+#if IS_ENABLED(CONFIG_OF)
+static void davinci_mdio_update_dt_from_phymask(u32 phy_mask);
+#endif
+
static void davinci_mdio_init_clk(struct davinci_mdio_data *data)
{
u32 mdio_in, div, mdio_out_khz, access_time;
@@ -159,6 +163,12 @@ static int davinci_mdio_reset(struct mii_bus *bus)
/* restrict mdio bus to live phys only */
dev_info(data->dev, "detected phy mask %x\n", ~phy_mask);
phy_mask = ~phy_mask;
+
+ #if IS_ENABLED(CONFIG_OF)
+ if (of_machine_is_compatible("ti,am335x-bone"))
+ davinci_mdio_update_dt_from_phymask(phy_mask);
+ #endif
+
} else {
/* desperately scan all phys */
dev_warn(data->dev, "no live phy, scanning all\n");
@@ -472,6 +482,93 @@ static int davinci_mdio_runtime_resume(struct device *dev)
davinci_mdio_enable(data);
return 0;
}
+static void davinci_mdio_update_dt_from_phymask(u32 phy_mask)
+{
+ int i, len, skip;
+ u32 addr;
+ __be32 *old_phy_p, *phy_id_p;
+ struct property *phy_id_property = NULL;
+ struct device_node *node_p, *slave_p;
+
+ addr = 0;
+
+ for (i = 0; i < PHY_MAX_ADDR; i++) {
+ if ((phy_mask & (1 << i)) == 0) {
+ addr = (u32) i;
+ break;
+ }
+ }
+
+ for_each_compatible_node(node_p, NULL, "ti,cpsw") {
+ for_each_node_by_name(slave_p, "slave") {
+
+#if IS_ENABLED(CONFIG_OF_OVERLAY)
+ skip = 1;
+ // Hack, the overlay fixup "slave" doesn't have phy-mode...
+ old_phy_p = (__be32 *) of_get_property(slave_p, "phy-mode", &len);
+
+ if (len != (sizeof(__be32 *) * 1))
+ {
+ skip = 0;
+ }
+
+ if (skip) {
+#endif
+
+ old_phy_p = (__be32 *) of_get_property(slave_p, "phy_id", &len);
+
+ if (len != (sizeof(__be32 *) * 2))
+ goto err_out;
+
+ if (old_phy_p) {
+
+ phy_id_property = kzalloc(sizeof(*phy_id_property), GFP_KERNEL);
+
+ if (! phy_id_property)
+ goto err_out;
+
+ phy_id_property->length = len;
+ phy_id_property->name = kstrdup("phy_id", GFP_KERNEL);
+ phy_id_property->value = kzalloc(len, GFP_KERNEL);
+
+ if (! phy_id_property->name)
+ goto err_out;
+
+ if (! phy_id_property->value)
+ goto err_out;
+
+ memcpy(phy_id_property->value, old_phy_p, len);
+
+ phy_id_p = (__be32 *) phy_id_property->value + 1;
+
+ *phy_id_p = cpu_to_be32(addr);
+
+ of_update_property(slave_p, phy_id_property);
+ pr_info("davinci_mdio: dt: updated phy_id[%d] from phy_mask[%x]\n", addr, phy_mask);
+
+ ++addr;
+ }
+#if IS_ENABLED(CONFIG_OF_OVERLAY)
+ }
+#endif
+ }
+ }
+
+ return;
+
+err_out:
+
+ if (phy_id_property) {
+ if (phy_id_property->name)
+ kfree(phy_id_property->name);
+
+ if (phy_id_property->value)
+ kfree(phy_id_property->value);
+
+ if (phy_id_property)
+ kfree(phy_id_property);
+ }
+}
#endif
#ifdef CONFIG_PM_SLEEP
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 355be77f42..c94a7193e0 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -48,6 +48,7 @@
#define SUSPEND_SUSPEND3 (0x08)
#define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
+#define MAC_ADDR_LEN (6)
#define CARRIER_CHECK_DELAY (2 * HZ)
@@ -70,6 +71,10 @@ static bool turbo_mode = true;
module_param(turbo_mode, bool, 0644);
MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
+static char *macaddr = ":";
+module_param(macaddr, charp, 0);
+MODULE_PARM_DESC(macaddr, "MAC address");
+
static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
u32 *data, int in_pm)
{
@@ -899,8 +904,59 @@ static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
}
+/* Check the macaddr module parameter for a MAC address */
+static int smsc95xx_is_macaddr_param(struct usbnet *dev, u8 *dev_mac)
+{
+ int i, j, got_num, num;
+ u8 mtbl[MAC_ADDR_LEN];
+
+ if (macaddr[0] == ':')
+ return 0;
+
+ i = 0;
+ j = 0;
+ num = 0;
+ got_num = 0;
+ while (j < MAC_ADDR_LEN) {
+ if (macaddr[i] && macaddr[i] != ':') {
+ got_num++;
+ if ('0' <= macaddr[i] && macaddr[i] <= '9')
+ num = num * 16 + macaddr[i] - '0';
+ else if ('A' <= macaddr[i] && macaddr[i] <= 'F')
+ num = num * 16 + 10 + macaddr[i] - 'A';
+ else if ('a' <= macaddr[i] && macaddr[i] <= 'f')
+ num = num * 16 + 10 + macaddr[i] - 'a';
+ else
+ break;
+ i++;
+ } else if (got_num == 2) {
+ mtbl[j++] = (u8) num;
+ num = 0;
+ got_num = 0;
+ i++;
+ } else {
+ break;
+ }
+ }
+
+ if (j == MAC_ADDR_LEN) {
+ netif_dbg(dev, ifup, dev->net, "Overriding MAC address with: "
+ "%02x:%02x:%02x:%02x:%02x:%02x\n", mtbl[0], mtbl[1], mtbl[2],
+ mtbl[3], mtbl[4], mtbl[5]);
+ for (i = 0; i < MAC_ADDR_LEN; i++)
+ dev_mac[i] = mtbl[i];
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
static void smsc95xx_init_mac_address(struct usbnet *dev)
{
+ /* Check module parameters */
+ if (smsc95xx_is_macaddr_param(dev, dev->net->dev_addr))
+ return;
+
const u8 *mac_addr;
/* maybe the boot loader passed the MAC address in devicetree */
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 1b67bb578f..cb1fc6e30d 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -620,9 +620,28 @@ config THINKPAD_ACPI_HOTKEY_POLL
If you are not sure, say Y here. The driver enables polling only if
it is strictly necessary to do so.
+config THINKPAD_EC
+ tristate
+ ---help---
+ This is a low-level driver for accessing the ThinkPad H8S embedded
+ controller over the LPC bus (not to be confused with the ACPI Embedded
+ Controller interface).
+
+config TP_SMAPI
+ tristate "ThinkPad SMAPI Support"
+ select THINKPAD_EC
+ default n
+ help
+ This adds SMAPI support on Lenovo/IBM ThinkPads, for features such
+ as battery charging control. For more information about this driver
+ see <http://www.thinkwiki.org/wiki/tp_smapi>.
+
+ If you have a Lenovo/IBM ThinkPad laptop, say Y or M here.
+
config SENSORS_HDAPS
tristate "Thinkpad Hard Drive Active Protection System (hdaps)"
depends on INPUT
+ select THINKPAD_EC
select INPUT_POLLDEV
help
This driver provides support for the IBM Hard Drive Active Protection
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index 4151040330..ea33d4e3fc 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -39,6 +39,8 @@ obj-$(CONFIG_TC1100_WMI) += tc1100-wmi.o
obj-$(CONFIG_SONY_LAPTOP) += sony-laptop.o
obj-$(CONFIG_IDEAPAD_LAPTOP) += ideapad-laptop.o
obj-$(CONFIG_THINKPAD_ACPI) += thinkpad_acpi.o
+obj-$(CONFIG_THINKPAD_EC) += thinkpad_ec.o
+obj-$(CONFIG_TP_SMAPI) += tp_smapi.o
obj-$(CONFIG_SENSORS_HDAPS) += hdaps.o
obj-$(CONFIG_FUJITSU_LAPTOP) += fujitsu-laptop.o
obj-$(CONFIG_FUJITSU_TABLET) += fujitsu-tablet.o
diff --git a/drivers/platform/x86/hdaps.c b/drivers/platform/x86/hdaps.c
index 3adcb0de01..5e4232be23 100644
--- a/drivers/platform/x86/hdaps.c
+++ b/drivers/platform/x86/hdaps.c
@@ -3,7 +3,7 @@
* hdaps.c - driver for IBM's Hard Drive Active Protection System
*
* Copyright (C) 2005 Robert Love <rml@novell.com>
- * Copyright (C) 2005 Jesper Juhl <jj@chaosbits.net>
+ * Copyright (C) 2005 Jesper Juhl <jesper.juhl@gmail.com>
*
* The HardDisk Active Protection System (hdaps) is present in IBM ThinkPads
* starting with the R40, T41, and X40. It provides a basic two-axis
@@ -18,266 +18,384 @@
#include <linux/delay.h>
#include <linux/platform_device.h>
-#include <linux/input-polldev.h>
+#include <linux/input.h>
#include <linux/kernel.h>
-#include <linux/mutex.h>
#include <linux/module.h>
#include <linux/timer.h>
#include <linux/dmi.h>
#include <linux/jiffies.h>
-#include <linux/io.h>
-
-#define HDAPS_LOW_PORT 0x1600 /* first port used by hdaps */
-#define HDAPS_NR_PORTS 0x30 /* number of ports: 0x1600 - 0x162f */
-
-#define HDAPS_PORT_STATE 0x1611 /* device state */
-#define HDAPS_PORT_YPOS 0x1612 /* y-axis position */
-#define HDAPS_PORT_XPOS 0x1614 /* x-axis position */
-#define HDAPS_PORT_TEMP1 0x1616 /* device temperature, in Celsius */
-#define HDAPS_PORT_YVAR 0x1617 /* y-axis variance (what is this?) */
-#define HDAPS_PORT_XVAR 0x1619 /* x-axis variance (what is this?) */
-#define HDAPS_PORT_TEMP2 0x161b /* device temperature (again?) */
-#define HDAPS_PORT_UNKNOWN 0x161c /* what is this? */
-#define HDAPS_PORT_KMACT 0x161d /* keyboard or mouse activity */
-
-#define STATE_FRESH 0x50 /* accelerometer data is fresh */
+#include <linux/thinkpad_ec.h>
+#include <linux/pci_ids.h>
+#include <linux/version.h>
+
+/* Embedded controller accelerometer read command and its result: */
+static const struct thinkpad_ec_row ec_accel_args =
+ { .mask = 0x0001, .val = {0x11} };
+#define EC_ACCEL_IDX_READOUTS 0x1 /* readouts included in this read */
+ /* First readout, if READOUTS>=1: */
+#define EC_ACCEL_IDX_YPOS1 0x2 /* y-axis position word */
+#define EC_ACCEL_IDX_XPOS1 0x4 /* x-axis position word */
+#define EC_ACCEL_IDX_TEMP1 0x6 /* device temperature in Celsius */
+ /* Second readout, if READOUTS>=2: */
+#define EC_ACCEL_IDX_XPOS2 0x7 /* y-axis position word */
+#define EC_ACCEL_IDX_YPOS2 0x9 /* x-axis position word */
+#define EC_ACCEL_IDX_TEMP2 0xb /* device temperature in Celsius */
+#define EC_ACCEL_IDX_QUEUED 0xc /* Number of queued readouts left */
+#define EC_ACCEL_IDX_KMACT 0xd /* keyboard or mouse activity */
+#define EC_ACCEL_IDX_RETVAL 0xf /* command return value, good=0x00 */
#define KEYBD_MASK 0x20 /* set if keyboard activity */
#define MOUSE_MASK 0x40 /* set if mouse activity */
-#define KEYBD_ISSET(n) (!! (n & KEYBD_MASK)) /* keyboard used? */
-#define MOUSE_ISSET(n) (!! (n & MOUSE_MASK)) /* mouse used? */
-#define INIT_TIMEOUT_MSECS 4000 /* wait up to 4s for device init ... */
-#define INIT_WAIT_MSECS 200 /* ... in 200ms increments */
+#define READ_TIMEOUT_MSECS 100 /* wait this long for device read */
+#define RETRY_MSECS 3 /* retry delay */
-#define HDAPS_POLL_INTERVAL 50 /* poll for input every 1/20s (50 ms)*/
#define HDAPS_INPUT_FUZZ 4 /* input event threshold */
#define HDAPS_INPUT_FLAT 4
-
-#define HDAPS_X_AXIS (1 << 0)
-#define HDAPS_Y_AXIS (1 << 1)
-#define HDAPS_BOTH_AXES (HDAPS_X_AXIS | HDAPS_Y_AXIS)
-
+#define KMACT_REMEMBER_PERIOD (HZ/10) /* keyboard/mouse persistence */
+
+/* Input IDs */
+#define HDAPS_INPUT_VENDOR PCI_VENDOR_ID_IBM
+#define HDAPS_INPUT_PRODUCT 0x5054 /* "TP", shared with thinkpad_acpi */
+#define HDAPS_INPUT_JS_VERSION 0x6801 /* Joystick emulation input device */
+#define HDAPS_INPUT_RAW_VERSION 0x4801 /* Raw accelerometer input device */
+
+/* Axis orientation. */
+/* The unnatural bit-representation of inversions is for backward
+ * compatibility with the"invert=1" module parameter. */
+#define HDAPS_ORIENT_INVERT_XY 0x01 /* Invert both X and Y axes. */
+#define HDAPS_ORIENT_INVERT_X 0x02 /* Invert the X axis (uninvert if
+ * already inverted by INVERT_XY). */
+#define HDAPS_ORIENT_SWAP 0x04 /* Swap the axes. The swap occurs
+ * before inverting X or Y. */
+#define HDAPS_ORIENT_MAX 0x07
+#define HDAPS_ORIENT_UNDEFINED 0xFF /* Placeholder during initialization */
+#define HDAPS_ORIENT_INVERT_Y (HDAPS_ORIENT_INVERT_XY | HDAPS_ORIENT_INVERT_X)
+
+static struct timer_list hdaps_timer;
static struct platform_device *pdev;
-static struct input_polled_dev *hdaps_idev;
-static unsigned int hdaps_invert;
-static u8 km_activity;
-static int rest_x;
-static int rest_y;
-
-static DEFINE_MUTEX(hdaps_mtx);
-
-/*
- * __get_latch - Get the value from a given port. Callers must hold hdaps_mtx.
- */
-static inline u8 __get_latch(u16 port)
+static struct input_dev *hdaps_idev; /* joystick-like device with fuzz */
+static struct input_dev *hdaps_idev_raw; /* raw hdaps sensor readouts */
+static unsigned int hdaps_invert = HDAPS_ORIENT_UNDEFINED;
+static int needs_calibration;
+
+/* Configuration: */
+static int sampling_rate = 50; /* Sampling rate */
+static int oversampling_ratio = 5; /* Ratio between our sampling rate and
+ * EC accelerometer sampling rate */
+static int running_avg_filter_order = 2; /* EC running average filter order */
+
+/* Latest state readout: */
+static int pos_x, pos_y; /* position */
+static int temperature; /* temperature */
+static int stale_readout = 1; /* last read invalid */
+static int rest_x, rest_y; /* calibrated rest position */
+
+/* Last time we saw keyboard and mouse activity: */
+static u64 last_keyboard_jiffies = INITIAL_JIFFIES;
+static u64 last_mouse_jiffies = INITIAL_JIFFIES;
+static u64 last_update_jiffies = INITIAL_JIFFIES;
+
+/* input device use count */
+static int hdaps_users;
+static DEFINE_MUTEX(hdaps_users_mtx);
+
+/* Some models require an axis transformation to the standard representation */
+static void transform_axes(int *x, int *y)
{
- return inb(port) & 0xff;
+ if (hdaps_invert & HDAPS_ORIENT_SWAP) {
+ int z;
+ z = *x;
+ *x = *y;
+ *y = z;
+ }
+ if (hdaps_invert & HDAPS_ORIENT_INVERT_XY) {
+ *x = -*x;
+ *y = -*y;
+ }
+ if (hdaps_invert & HDAPS_ORIENT_INVERT_X)
+ *x = -*x;
}
-/*
- * __check_latch - Check a port latch for a given value. Returns zero if the
- * port contains the given value. Callers must hold hdaps_mtx.
+/**
+ * __hdaps_update - query current state, with locks already acquired
+ * @fast: if nonzero, do one quick attempt without retries.
+ *
+ * Query current accelerometer state and update global state variables.
+ * Also prefetches the next query. Caller must hold controller lock.
*/
-static inline int __check_latch(u16 port, u8 val)
+static int __hdaps_update(int fast)
{
- if (__get_latch(port) == val)
- return 0;
- return -EINVAL;
-}
+ /* Read data: */
+ struct thinkpad_ec_row data;
+ int ret;
-/*
- * __wait_latch - Wait up to 100us for a port latch to get a certain value,
- * returning zero if the value is obtained. Callers must hold hdaps_mtx.
- */
-static int __wait_latch(u16 port, u8 val)
-{
- unsigned int i;
+ data.mask = (1 << EC_ACCEL_IDX_READOUTS) | (1 << EC_ACCEL_IDX_KMACT) |
+ (3 << EC_ACCEL_IDX_YPOS1) | (3 << EC_ACCEL_IDX_XPOS1) |
+ (1 << EC_ACCEL_IDX_TEMP1) | (1 << EC_ACCEL_IDX_RETVAL);
+ if (fast)
+ ret = thinkpad_ec_try_read_row(&ec_accel_args, &data);
+ else
+ ret = thinkpad_ec_read_row(&ec_accel_args, &data);
+ thinkpad_ec_prefetch_row(&ec_accel_args); /* Prefetch even if error */
+ if (ret)
+ return ret;
- for (i = 0; i < 20; i++) {
- if (!__check_latch(port, val))
- return 0;
- udelay(5);
+ /* Check status: */
+ if (data.val[EC_ACCEL_IDX_RETVAL] != 0x00) {
+ pr_warn("read RETVAL=0x%02x\n",
+ data.val[EC_ACCEL_IDX_RETVAL]);
+ return -EIO;
}
- return -EIO;
+ if (data.val[EC_ACCEL_IDX_READOUTS] < 1)
+ return -EBUSY; /* no pending readout, try again later */
+
+ /* Parse position data: */
+ pos_x = *(s16 *)(data.val+EC_ACCEL_IDX_XPOS1);
+ pos_y = *(s16 *)(data.val+EC_ACCEL_IDX_YPOS1);
+ transform_axes(&pos_x, &pos_y);
+
+ /* Keyboard and mouse activity status is cleared as soon as it's read,
+ * so applications will eat each other's events. Thus we remember any
+ * event for KMACT_REMEMBER_PERIOD jiffies.
+ */
+ if (data.val[EC_ACCEL_IDX_KMACT] & KEYBD_MASK)
+ last_keyboard_jiffies = get_jiffies_64();
+ if (data.val[EC_ACCEL_IDX_KMACT] & MOUSE_MASK)
+ last_mouse_jiffies = get_jiffies_64();
+
+ temperature = data.val[EC_ACCEL_IDX_TEMP1];
+
+ last_update_jiffies = get_jiffies_64();
+ stale_readout = 0;
+ if (needs_calibration) {
+ rest_x = pos_x;
+ rest_y = pos_y;
+ needs_calibration = 0;
+ }
+
+ return 0;
}
-/*
- * __device_refresh - request a refresh from the accelerometer. Does not wait
- * for refresh to complete. Callers must hold hdaps_mtx.
+/**
+ * hdaps_update - acquire locks and query current state
+ *
+ * Query current accelerometer state and update global state variables.
+ * Also prefetches the next query.
+ * Retries until timeout if the accelerometer is not in ready status (common).
+ * Does its own locking.
*/
-static void __device_refresh(void)
+static int hdaps_update(void)
{
- udelay(200);
- if (inb(0x1604) != STATE_FRESH) {
- outb(0x11, 0x1610);
- outb(0x01, 0x161f);
+ u64 age = get_jiffies_64() - last_update_jiffies;
+ int total, ret;
+
+ if (!stale_readout && age < (9*HZ)/(10*sampling_rate))
+ return 0; /* already updated recently */
+ for (total = 0; total < READ_TIMEOUT_MSECS; total += RETRY_MSECS) {
+ ret = thinkpad_ec_lock();
+ if (ret)
+ return ret;
+ ret = __hdaps_update(0);
+ thinkpad_ec_unlock();
+
+ if (!ret)
+ return 0;
+ if (ret != -EBUSY)
+ break;
+ msleep(RETRY_MSECS);
}
+ return ret;
}
-/*
- * __device_refresh_sync - request a synchronous refresh from the
- * accelerometer. We wait for the refresh to complete. Returns zero if
- * successful and nonzero on error. Callers must hold hdaps_mtx.
+/**
+ * hdaps_set_power - enable or disable power to the accelerometer.
+ * Returns zero on success and negative error code on failure. Can sleep.
*/
-static int __device_refresh_sync(void)
+static int hdaps_set_power(int on)
{
- __device_refresh();
- return __wait_latch(0x1604, STATE_FRESH);
+ struct thinkpad_ec_row args =
+ { .mask = 0x0003, .val = {0x14, on?0x01:0x00} };
+ struct thinkpad_ec_row data = { .mask = 0x8000 };
+ int ret = thinkpad_ec_read_row(&args, &data);
+ if (ret)
+ return ret;
+ if (data.val[0xF] != 0x00)
+ return -EIO;
+ return 0;
}
-/*
- * __device_complete - indicate to the accelerometer that we are done reading
- * data, and then initiate an async refresh. Callers must hold hdaps_mtx.
+/**
+ * hdaps_set_ec_config - set accelerometer parameters.
+ * @ec_rate: embedded controller sampling rate
+ * @order: embedded controller running average filter order
+ * (Normally we have @ec_rate = sampling_rate * oversampling_ratio.)
+ * Returns zero on success and negative error code on failure. Can sleep.
*/
-static inline void __device_complete(void)
+static int hdaps_set_ec_config(int ec_rate, int order)
{
- inb(0x161f);
- inb(0x1604);
- __device_refresh();
+ struct thinkpad_ec_row args = { .mask = 0x000F,
+ .val = {0x10, (u8)ec_rate, (u8)(ec_rate>>8), order} };
+ struct thinkpad_ec_row data = { .mask = 0x8000 };
+ int ret = thinkpad_ec_read_row(&args, &data);
+ pr_debug("setting ec_rate=%d, filter_order=%d\n", ec_rate, order);
+ if (ret)
+ return ret;
+ if (data.val[0xF] == 0x03) {
+ pr_warn("config param out of range\n");
+ return -EINVAL;
+ }
+ if (data.val[0xF] == 0x06) {
+ pr_warn("config change already pending\n");
+ return -EBUSY;
+ }
+ if (data.val[0xF] != 0x00) {
+ pr_warn("config change error, ret=%d\n",
+ data.val[0xF]);
+ return -EIO;
+ }
+ return 0;
}
-/*
- * hdaps_readb_one - reads a byte from a single I/O port, placing the value in
- * the given pointer. Returns zero on success or a negative error on failure.
- * Can sleep.
+/**
+ * hdaps_get_ec_config - get accelerometer parameters.
+ * @ec_rate: embedded controller sampling rate
+ * @order: embedded controller running average filter order
+ * Returns zero on success and negative error code on failure. Can sleep.
*/
-static int hdaps_readb_one(unsigned int port, u8 *val)
+static int hdaps_get_ec_config(int *ec_rate, int *order)
{
- int ret;
-
- mutex_lock(&hdaps_mtx);
-
- /* do a sync refresh -- we need to be sure that we read fresh data */
- ret = __device_refresh_sync();
+ const struct thinkpad_ec_row args =
+ { .mask = 0x0003, .val = {0x17, 0x82} };
+ struct thinkpad_ec_row data = { .mask = 0x801F };
+ int ret = thinkpad_ec_read_row(&args, &data);
if (ret)
- goto out;
-
- *val = inb(port);
- __device_complete();
-
-out:
- mutex_unlock(&hdaps_mtx);
- return ret;
+ return ret;
+ if (data.val[0xF] != 0x00)
+ return -EIO;
+ if (!(data.val[0x1] & 0x01))
+ return -ENXIO; /* accelerometer polling not enabled */
+ if (data.val[0x1] & 0x02)
+ return -EBUSY; /* config change in progress, retry later */
+ *ec_rate = data.val[0x2] | ((int)(data.val[0x3]) << 8);
+ *order = data.val[0x4];
+ return 0;
}
-/* __hdaps_read_pair - internal lockless helper for hdaps_read_pair(). */
-static int __hdaps_read_pair(unsigned int port1, unsigned int port2,
- int *x, int *y)
+/**
+ * hdaps_get_ec_mode - get EC accelerometer mode
+ * Returns zero on success and negative error code on failure. Can sleep.
+ */
+static int hdaps_get_ec_mode(u8 *mode)
{
- /* do a sync refresh -- we need to be sure that we read fresh data */
- if (__device_refresh_sync())
+ const struct thinkpad_ec_row args =
+ { .mask = 0x0001, .val = {0x13} };
+ struct thinkpad_ec_row data = { .mask = 0x8002 };
+ int ret = thinkpad_ec_read_row(&args, &data);
+ if (ret)
+ return ret;
+ if (data.val[0xF] != 0x00) {
+ pr_warn("accelerometer not implemented (0x%02x)\n",
+ data.val[0xF]);
return -EIO;
-
- *y = inw(port2);
- *x = inw(port1);
- km_activity = inb(HDAPS_PORT_KMACT);
- __device_complete();
-
- /* hdaps_invert is a bitvector to negate the axes */
- if (hdaps_invert & HDAPS_X_AXIS)
- *x = -*x;
- if (hdaps_invert & HDAPS_Y_AXIS)
- *y = -*y;
-
+ }
+ *mode = data.val[0x1];
return 0;
}
-/*
- * hdaps_read_pair - reads the values from a pair of ports, placing the values
- * in the given pointers. Returns zero on success. Can sleep.
+/**
+ * hdaps_check_ec - checks something about the EC.
+ * Follows the clean-room spec for HDAPS; we don't know what it means.
+ * Returns zero on success and negative error code on failure. Can sleep.
*/
-static int hdaps_read_pair(unsigned int port1, unsigned int port2,
- int *val1, int *val2)
+static int hdaps_check_ec(void)
{
- int ret;
-
- mutex_lock(&hdaps_mtx);
- ret = __hdaps_read_pair(port1, port2, val1, val2);
- mutex_unlock(&hdaps_mtx);
-
- return ret;
+ const struct thinkpad_ec_row args =
+ { .mask = 0x0003, .val = {0x17, 0x81} };
+ struct thinkpad_ec_row data = { .mask = 0x800E };
+ int ret = thinkpad_ec_read_row(&args, &data);
+ if (ret)
+ return ret;
+ if (!((data.val[0x1] == 0x00 && data.val[0x2] == 0x60) || /* cleanroom spec */
+ (data.val[0x1] == 0x01 && data.val[0x2] == 0x00)) || /* seen on T61 */
+ data.val[0x3] != 0x00 || data.val[0xF] != 0x00) {
+ pr_warn("hdaps_check_ec: bad response (0x%x,0x%x,0x%x,0x%x)\n",
+ data.val[0x1], data.val[0x2],
+ data.val[0x3], data.val[0xF]);
+ return -EIO;
+ }
+ return 0;
}
-/*
- * hdaps_device_init - initialize the accelerometer. Returns zero on success
- * and negative error code on failure. Can sleep.
+/**
+ * hdaps_device_init - initialize the accelerometer.
+ *
+ * Call several embedded controller functions to test and initialize the
+ * accelerometer.
+ * Returns zero on success and negative error code on failure. Can sleep.
*/
+#define FAILED_INIT(msg) pr_err("init failed at: %s\n", msg)
static int hdaps_device_init(void)
{
- int total, ret = -ENXIO;
+ int ret;
+ u8 mode;
- mutex_lock(&hdaps_mtx);
+ ret = thinkpad_ec_lock();
+ if (ret)
+ return ret;
- outb(0x13, 0x1610);
- outb(0x01, 0x161f);
- if (__wait_latch(0x161f, 0x00))
- goto out;
+ if (hdaps_get_ec_mode(&mode))
+ { FAILED_INIT("hdaps_get_ec_mode failed"); goto bad; }
- /*
- * Most ThinkPads return 0x01.
- *
- * Others--namely the R50p, T41p, and T42p--return 0x03. These laptops
- * have "inverted" axises.
- *
- * The 0x02 value occurs when the chip has been previously initialized.
- */
- if (__check_latch(0x1611, 0x03) &&
- __check_latch(0x1611, 0x02) &&
- __check_latch(0x1611, 0x01))
- goto out;
+ pr_debug("initial mode latch is 0x%02x\n", mode);
+ if (mode == 0x00)
+ { FAILED_INIT("accelerometer not available"); goto bad; }
- printk(KERN_DEBUG "hdaps: initial latch check good (0x%02x)\n",
- __get_latch(0x1611));
+ if (hdaps_check_ec())
+ { FAILED_INIT("hdaps_check_ec failed"); goto bad; }
- outb(0x17, 0x1610);
- outb(0x81, 0x1611);
- outb(0x01, 0x161f);
- if (__wait_latch(0x161f, 0x00))
- goto out;
- if (__wait_latch(0x1611, 0x00))
- goto out;
- if (__wait_latch(0x1612, 0x60))
- goto out;
- if (__wait_latch(0x1613, 0x00))
- goto out;
- outb(0x14, 0x1610);
- outb(0x01, 0x1611);
- outb(0x01, 0x161f);
- if (__wait_latch(0x161f, 0x00))
- goto out;
- outb(0x10, 0x1610);
- outb(0xc8, 0x1611);
- outb(0x00, 0x1612);
- outb(0x02, 0x1613);
- outb(0x01, 0x161f);
- if (__wait_latch(0x161f, 0x00))
- goto out;
- if (__device_refresh_sync())
- goto out;
- if (__wait_latch(0x1611, 0x00))
- goto out;
-
- /* we have done our dance, now let's wait for the applause */
- for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) {
- int x, y;
+ if (hdaps_set_power(1))
+ { FAILED_INIT("hdaps_set_power failed"); goto bad; }
- /* a read of the device helps push it into action */
- __hdaps_read_pair(HDAPS_PORT_XPOS, HDAPS_PORT_YPOS, &x, &y);
- if (!__wait_latch(0x1611, 0x02)) {
- ret = 0;
- break;
- }
+ if (hdaps_set_ec_config(sampling_rate*oversampling_ratio,
+ running_avg_filter_order))
+ { FAILED_INIT("hdaps_set_ec_config failed"); goto bad; }
- msleep(INIT_WAIT_MSECS);
- }
+ thinkpad_ec_invalidate();
+ udelay(200);
-out:
- mutex_unlock(&hdaps_mtx);
+ /* Just prefetch instead of reading, to avoid ~1sec delay on load */
+ ret = thinkpad_ec_prefetch_row(&ec_accel_args);
+ if (ret)
+ { FAILED_INIT("initial prefetch failed"); goto bad; }
+ goto good;
+bad:
+ thinkpad_ec_invalidate();
+ ret = -ENXIO;
+good:
+ stale_readout = 1;
+ thinkpad_ec_unlock();
return ret;
}
+/**
+ * hdaps_device_shutdown - power off the accelerometer
+ * Returns nonzero on failure. Can sleep.
+ */
+static int hdaps_device_shutdown(void)
+{
+ int ret;
+ ret = hdaps_set_power(0);
+ if (ret) {
+ pr_warn("cannot power off\n");
+ return ret;
+ }
+ ret = hdaps_set_ec_config(0, 1);
+ if (ret)
+ pr_warn("cannot stop EC sampling\n");
+ return ret;
+}
/* Device model stuff */
@@ -294,13 +412,29 @@ static int hdaps_probe(struct platform_device *dev)
}
#ifdef CONFIG_PM_SLEEP
+static int hdaps_suspend(struct device *dev)
+{
+ /* Don't do hdaps polls until resume re-initializes the sensor. */
+ del_timer_sync(&hdaps_timer);
+ hdaps_device_shutdown(); /* ignore errors, effect is negligible */
+ return 0;
+}
+
static int hdaps_resume(struct device *dev)
{
- return hdaps_device_init();
+ int ret = hdaps_device_init();
+ if (ret)
+ return ret;
+
+ mutex_lock(&hdaps_users_mtx);
+ if (hdaps_users)
+ mod_timer(&hdaps_timer, jiffies + HZ/sampling_rate);
+ mutex_unlock(&hdaps_users_mtx);
+ return 0;
}
#endif
-static SIMPLE_DEV_PM_OPS(hdaps_pm, NULL, hdaps_resume);
+static SIMPLE_DEV_PM_OPS(hdaps_pm, hdaps_suspend, hdaps_resume);
static struct platform_driver hdaps_driver = {
.probe = hdaps_probe,
@@ -310,30 +444,51 @@ static struct platform_driver hdaps_driver = {
},
};
-/*
- * hdaps_calibrate - Set our "resting" values. Callers must hold hdaps_mtx.
+/**
+ * hdaps_calibrate - set our "resting" values.
+ * Does its own locking.
*/
static void hdaps_calibrate(void)
{
- __hdaps_read_pair(HDAPS_PORT_XPOS, HDAPS_PORT_YPOS, &rest_x, &rest_y);
+ needs_calibration = 1;
+ hdaps_update();
+ /* If that fails, the mousedev poll will take care of things later. */
}
-static void hdaps_mousedev_poll(struct input_polled_dev *dev)
+/* Timer handler for updating the input device. Runs in softirq context,
+ * so avoid lenghty or blocking operations.
+ */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,15,0)
+static void hdaps_mousedev_poll(unsigned long unused)
+#else
+static void hdaps_mousedev_poll(struct timer_list *unused)
+#endif
{
- struct input_dev *input_dev = dev->input;
- int x, y;
+ int ret;
- mutex_lock(&hdaps_mtx);
+ stale_readout = 1;
- if (__hdaps_read_pair(HDAPS_PORT_XPOS, HDAPS_PORT_YPOS, &x, &y))
- goto out;
+ /* Cannot sleep. Try nonblockingly. If we fail, try again later. */
+ if (thinkpad_ec_try_lock())
+ goto keep_active;
- input_report_abs(input_dev, ABS_X, x - rest_x);
- input_report_abs(input_dev, ABS_Y, y - rest_y);
- input_sync(input_dev);
+ ret = __hdaps_update(1); /* fast update, we're in softirq context */
+ thinkpad_ec_unlock();
+ /* Any of "successful", "not yet ready" and "not prefetched"? */
+ if (ret != 0 && ret != -EBUSY && ret != -ENODATA) {
+ pr_err("poll failed, disabling updates\n");
+ return;
+ }
-out:
- mutex_unlock(&hdaps_mtx);
+keep_active:
+ /* Even if we failed now, pos_x,y may have been updated earlier: */
+ input_report_abs(hdaps_idev, ABS_X, pos_x - rest_x);
+ input_report_abs(hdaps_idev, ABS_Y, pos_y - rest_y);
+ input_sync(hdaps_idev);
+ input_report_abs(hdaps_idev_raw, ABS_X, pos_x);
+ input_report_abs(hdaps_idev_raw, ABS_Y, pos_y);
+ input_sync(hdaps_idev_raw);
+ mod_timer(&hdaps_timer, jiffies + HZ/sampling_rate);
}
@@ -342,65 +497,41 @@ static void hdaps_mousedev_poll(struct input_polled_dev *dev)
static ssize_t hdaps_position_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- int ret, x, y;
-
- ret = hdaps_read_pair(HDAPS_PORT_XPOS, HDAPS_PORT_YPOS, &x, &y);
+ int ret = hdaps_update();
if (ret)
return ret;
-
- return sprintf(buf, "(%d,%d)\n", x, y);
-}
-
-static ssize_t hdaps_variance_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- int ret, x, y;
-
- ret = hdaps_read_pair(HDAPS_PORT_XVAR, HDAPS_PORT_YVAR, &x, &y);
- if (ret)
- return ret;
-
- return sprintf(buf, "(%d,%d)\n", x, y);
+ return sprintf(buf, "(%d,%d)\n", pos_x, pos_y);
}
static ssize_t hdaps_temp1_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- u8 uninitialized_var(temp);
- int ret;
-
- ret = hdaps_readb_one(HDAPS_PORT_TEMP1, &temp);
- if (ret)
- return ret;
-
- return sprintf(buf, "%u\n", temp);
-}
-
-static ssize_t hdaps_temp2_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- u8 uninitialized_var(temp);
- int ret;
-
- ret = hdaps_readb_one(HDAPS_PORT_TEMP2, &temp);
+ int ret = hdaps_update();
if (ret)
return ret;
-
- return sprintf(buf, "%u\n", temp);
+ return sprintf(buf, "%d\n", temperature);
}
static ssize_t hdaps_keyboard_activity_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- return sprintf(buf, "%u\n", KEYBD_ISSET(km_activity));
+ int ret = hdaps_update();
+ if (ret)
+ return ret;
+ return sprintf(buf, "%u\n",
+ get_jiffies_64() < last_keyboard_jiffies + KMACT_REMEMBER_PERIOD);
}
static ssize_t hdaps_mouse_activity_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- return sprintf(buf, "%u\n", MOUSE_ISSET(km_activity));
+ int ret = hdaps_update();
+ if (ret)
+ return ret;
+ return sprintf(buf, "%u\n",
+ get_jiffies_64() < last_mouse_jiffies + KMACT_REMEMBER_PERIOD);
}
static ssize_t hdaps_calibrate_show(struct device *dev,
@@ -413,10 +544,7 @@ static ssize_t hdaps_calibrate_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- mutex_lock(&hdaps_mtx);
hdaps_calibrate();
- mutex_unlock(&hdaps_mtx);
-
return count;
}
@@ -433,7 +561,7 @@ static ssize_t hdaps_invert_store(struct device *dev,
int invert;
if (sscanf(buf, "%d", &invert) != 1 ||
- invert < 0 || invert > HDAPS_BOTH_AXES)
+ invert < 0 || invert > HDAPS_ORIENT_MAX)
return -EINVAL;
hdaps_invert = invert;
@@ -442,24 +570,128 @@ static ssize_t hdaps_invert_store(struct device *dev,
return count;
}
+static ssize_t hdaps_sampling_rate_show(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%d\n", sampling_rate);
+}
+
+static ssize_t hdaps_sampling_rate_store(
+ struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int rate, ret;
+ if (sscanf(buf, "%d", &rate) != 1 || rate > HZ || rate <= 0) {
+ pr_warn("must have 0<input_sampling_rate<=HZ=%d\n", HZ);
+ return -EINVAL;
+ }
+ ret = hdaps_set_ec_config(rate*oversampling_ratio,
+ running_avg_filter_order);
+ if (ret)
+ return ret;
+ sampling_rate = rate;
+ return count;
+}
+
+static ssize_t hdaps_oversampling_ratio_show(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int ec_rate, order;
+ int ret = hdaps_get_ec_config(&ec_rate, &order);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%u\n", ec_rate / sampling_rate);
+}
+
+static ssize_t hdaps_oversampling_ratio_store(
+ struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int ratio, ret;
+ if (sscanf(buf, "%d", &ratio) != 1 || ratio < 1)
+ return -EINVAL;
+ ret = hdaps_set_ec_config(sampling_rate*ratio,
+ running_avg_filter_order);
+ if (ret)
+ return ret;
+ oversampling_ratio = ratio;
+ return count;
+}
+
+static ssize_t hdaps_running_avg_filter_order_show(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int rate, order;
+ int ret = hdaps_get_ec_config(&rate, &order);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%u\n", order);
+}
+
+static ssize_t hdaps_running_avg_filter_order_store(
+ struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int order, ret;
+ if (sscanf(buf, "%d", &order) != 1)
+ return -EINVAL;
+ ret = hdaps_set_ec_config(sampling_rate*oversampling_ratio, order);
+ if (ret)
+ return ret;
+ running_avg_filter_order = order;
+ return count;
+}
+
+static int hdaps_mousedev_open(struct input_dev *dev)
+{
+ if (!try_module_get(THIS_MODULE))
+ return -ENODEV;
+
+ mutex_lock(&hdaps_users_mtx);
+ if (hdaps_users++ == 0) /* first input user */
+ mod_timer(&hdaps_timer, jiffies + HZ/sampling_rate);
+ mutex_unlock(&hdaps_users_mtx);
+ return 0;
+}
+
+static void hdaps_mousedev_close(struct input_dev *dev)
+{
+ mutex_lock(&hdaps_users_mtx);
+ if (--hdaps_users == 0) /* no input users left */
+ del_timer_sync(&hdaps_timer);
+ mutex_unlock(&hdaps_users_mtx);
+
+ module_put(THIS_MODULE);
+}
+
static DEVICE_ATTR(position, 0444, hdaps_position_show, NULL);
-static DEVICE_ATTR(variance, 0444, hdaps_variance_show, NULL);
static DEVICE_ATTR(temp1, 0444, hdaps_temp1_show, NULL);
-static DEVICE_ATTR(temp2, 0444, hdaps_temp2_show, NULL);
-static DEVICE_ATTR(keyboard_activity, 0444, hdaps_keyboard_activity_show, NULL);
+ /* "temp1" instead of "temperature" is hwmon convention */
+static DEVICE_ATTR(keyboard_activity, 0444,
+ hdaps_keyboard_activity_show, NULL);
static DEVICE_ATTR(mouse_activity, 0444, hdaps_mouse_activity_show, NULL);
-static DEVICE_ATTR(calibrate, 0644, hdaps_calibrate_show,hdaps_calibrate_store);
+static DEVICE_ATTR(calibrate, 0644,
+ hdaps_calibrate_show, hdaps_calibrate_store);
static DEVICE_ATTR(invert, 0644, hdaps_invert_show, hdaps_invert_store);
+static DEVICE_ATTR(sampling_rate, 0644,
+ hdaps_sampling_rate_show, hdaps_sampling_rate_store);
+static DEVICE_ATTR(oversampling_ratio, 0644,
+ hdaps_oversampling_ratio_show,
+ hdaps_oversampling_ratio_store);
+static DEVICE_ATTR(running_avg_filter_order, 0644,
+ hdaps_running_avg_filter_order_show,
+ hdaps_running_avg_filter_order_store);
static struct attribute *hdaps_attributes[] = {
&dev_attr_position.attr,
- &dev_attr_variance.attr,
&dev_attr_temp1.attr,
- &dev_attr_temp2.attr,
&dev_attr_keyboard_activity.attr,
&dev_attr_mouse_activity.attr,
&dev_attr_calibrate.attr,
&dev_attr_invert.attr,
+ &dev_attr_sampling_rate.attr,
+ &dev_attr_oversampling_ratio.attr,
+ &dev_attr_running_avg_filter_order.attr,
NULL,
};
@@ -470,84 +702,82 @@ static struct attribute_group hdaps_attribute_group = {
/* Module stuff */
-/* hdaps_dmi_match - found a match. return one, short-circuiting the hunt. */
-static int __init hdaps_dmi_match(const struct dmi_system_id *id)
-{
- pr_info("%s detected\n", id->ident);
- return 1;
-}
-
/* hdaps_dmi_match_invert - found an inverted match. */
static int __init hdaps_dmi_match_invert(const struct dmi_system_id *id)
{
- hdaps_invert = (unsigned long)id->driver_data;
- pr_info("inverting axis (%u) readings\n", hdaps_invert);
- return hdaps_dmi_match(id);
+ unsigned int orient = (kernel_ulong_t) id->driver_data;
+ hdaps_invert = orient;
+ pr_info("%s detected, setting orientation %u\n", id->ident, orient);
+ return 1; /* stop enumeration */
}
-#define HDAPS_DMI_MATCH_INVERT(vendor, model, axes) { \
+#define HDAPS_DMI_MATCH_INVERT(vendor, model, orient) { \
.ident = vendor " " model, \
.callback = hdaps_dmi_match_invert, \
- .driver_data = (void *)axes, \
+ .driver_data = (void *)(orient), \
.matches = { \
DMI_MATCH(DMI_BOARD_VENDOR, vendor), \
DMI_MATCH(DMI_PRODUCT_VERSION, model) \
} \
}
-#define HDAPS_DMI_MATCH_NORMAL(vendor, model) \
- HDAPS_DMI_MATCH_INVERT(vendor, model, 0)
-
-/* Note that HDAPS_DMI_MATCH_NORMAL("ThinkPad T42") would match
- "ThinkPad T42p", so the order of the entries matters.
- If your ThinkPad is not recognized, please update to latest
- BIOS. This is especially the case for some R52 ThinkPads. */
-static const struct dmi_system_id hdaps_whitelist[] __initconst = {
- HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad R50p", HDAPS_BOTH_AXES),
- HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad R50"),
- HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad R51"),
- HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad R52"),
- HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R61i", HDAPS_BOTH_AXES),
- HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R61", HDAPS_BOTH_AXES),
- HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad T41p", HDAPS_BOTH_AXES),
- HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad T41"),
- HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad T42p", HDAPS_BOTH_AXES),
- HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad T42"),
- HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad T43"),
- HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T400", HDAPS_BOTH_AXES),
- HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T60", HDAPS_BOTH_AXES),
- HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T61p", HDAPS_BOTH_AXES),
- HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T61", HDAPS_BOTH_AXES),
- HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad X40"),
- HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad X41", HDAPS_Y_AXIS),
- HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X60", HDAPS_BOTH_AXES),
- HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X61s", HDAPS_BOTH_AXES),
- HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X61", HDAPS_BOTH_AXES),
- HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad Z60m"),
- HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad Z61m", HDAPS_BOTH_AXES),
- HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad Z61p", HDAPS_BOTH_AXES),
+/* List of models with abnormal axis configuration.
+ Note that HDAPS_DMI_MATCH_NORMAL("ThinkPad T42") would match
+ "ThinkPad T42p", and enumeration stops after first match,
+ so the order of the entries matters. */
+const struct dmi_system_id hdaps_whitelist[] __initconst = {
+ HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad R50p", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad R60", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad T41p", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad T42p", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad X40", HDAPS_ORIENT_INVERT_Y),
+ HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad X41", HDAPS_ORIENT_INVERT_Y),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R60", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R61", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R400", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R500", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T60", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T61", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X60 Tablet", HDAPS_ORIENT_INVERT_Y),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X60s", HDAPS_ORIENT_INVERT_Y),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X60", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X61", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T400s", HDAPS_ORIENT_INVERT_X),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T400", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T410s", HDAPS_ORIENT_SWAP),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T410", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T500", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T510", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X | HDAPS_ORIENT_INVERT_Y),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad W510", HDAPS_ORIENT_MAX),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad W520", HDAPS_ORIENT_MAX),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X200s", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X200", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X | HDAPS_ORIENT_INVERT_Y),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X201 Tablet", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X201s", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X201", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X220", HDAPS_ORIENT_SWAP),
{ .ident = NULL }
};
static int __init hdaps_init(void)
{
- struct input_dev *idev;
int ret;
- if (!dmi_check_system(hdaps_whitelist)) {
- pr_warn("supported laptop not found!\n");
- ret = -ENODEV;
- goto out;
- }
-
- if (!request_region(HDAPS_LOW_PORT, HDAPS_NR_PORTS, "hdaps")) {
- ret = -ENXIO;
- goto out;
- }
-
+ /* Determine axis orientation orientation */
+ if (hdaps_invert == HDAPS_ORIENT_UNDEFINED) /* set by module param? */
+ if (dmi_check_system(hdaps_whitelist) < 1) /* in whitelist? */
+ hdaps_invert = 0; /* default */
+
+ /* Init timer before platform_driver_register, in case of suspend */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,15,0)
+ init_timer(&hdaps_timer);
+ hdaps_timer.function = hdaps_mousedev_poll;
+#else
+ timer_setup(&hdaps_timer, hdaps_mousedev_poll, 0);
+#endif
ret = platform_driver_register(&hdaps_driver);
if (ret)
- goto out_region;
+ goto out;
pdev = platform_device_register_simple("hdaps", -1, NULL, 0);
if (IS_ERR(pdev)) {
@@ -559,47 +789,79 @@ static int __init hdaps_init(void)
if (ret)
goto out_device;
- hdaps_idev = input_allocate_polled_device();
+ hdaps_idev = input_allocate_device();
if (!hdaps_idev) {
ret = -ENOMEM;
goto out_group;
}
- hdaps_idev->poll = hdaps_mousedev_poll;
- hdaps_idev->poll_interval = HDAPS_POLL_INTERVAL;
-
- /* initial calibrate for the input device */
- hdaps_calibrate();
+ hdaps_idev_raw = input_allocate_device();
+ if (!hdaps_idev_raw) {
+ ret = -ENOMEM;
+ goto out_idev_first;
+ }
- /* initialize the input class */
- idev = hdaps_idev->input;
- idev->name = "hdaps";
- idev->phys = "isa1600/input0";
- idev->id.bustype = BUS_ISA;
- idev->dev.parent = &pdev->dev;
- idev->evbit[0] = BIT_MASK(EV_ABS);
- input_set_abs_params(idev, ABS_X,
+ /* calibration for the input device (deferred to avoid delay) */
+ needs_calibration = 1;
+
+ /* initialize the joystick-like fuzzed input device */
+ hdaps_idev->name = "ThinkPad HDAPS joystick emulation";
+ hdaps_idev->phys = "hdaps/input0";
+ hdaps_idev->id.bustype = BUS_HOST;
+ hdaps_idev->id.vendor = HDAPS_INPUT_VENDOR;
+ hdaps_idev->id.product = HDAPS_INPUT_PRODUCT;
+ hdaps_idev->id.version = HDAPS_INPUT_JS_VERSION;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
+ hdaps_idev->cdev.dev = &pdev->dev;
+#endif
+ hdaps_idev->evbit[0] = BIT(EV_ABS);
+ hdaps_idev->open = hdaps_mousedev_open;
+ hdaps_idev->close = hdaps_mousedev_close;
+ input_set_abs_params(hdaps_idev, ABS_X,
-256, 256, HDAPS_INPUT_FUZZ, HDAPS_INPUT_FLAT);
- input_set_abs_params(idev, ABS_Y,
+ input_set_abs_params(hdaps_idev, ABS_Y,
-256, 256, HDAPS_INPUT_FUZZ, HDAPS_INPUT_FLAT);
- ret = input_register_polled_device(hdaps_idev);
+ ret = input_register_device(hdaps_idev);
if (ret)
goto out_idev;
- pr_info("driver successfully loaded\n");
+ /* initialize the raw data input device */
+ hdaps_idev_raw->name = "ThinkPad HDAPS accelerometer data";
+ hdaps_idev_raw->phys = "hdaps/input1";
+ hdaps_idev_raw->id.bustype = BUS_HOST;
+ hdaps_idev_raw->id.vendor = HDAPS_INPUT_VENDOR;
+ hdaps_idev_raw->id.product = HDAPS_INPUT_PRODUCT;
+ hdaps_idev_raw->id.version = HDAPS_INPUT_RAW_VERSION;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
+ hdaps_idev_raw->cdev.dev = &pdev->dev;
+#endif
+ hdaps_idev_raw->evbit[0] = BIT(EV_ABS);
+ hdaps_idev_raw->open = hdaps_mousedev_open;
+ hdaps_idev_raw->close = hdaps_mousedev_close;
+ input_set_abs_params(hdaps_idev_raw, ABS_X, -32768, 32767, 0, 0);
+ input_set_abs_params(hdaps_idev_raw, ABS_Y, -32768, 32767, 0, 0);
+
+ ret = input_register_device(hdaps_idev_raw);
+ if (ret)
+ goto out_idev_reg_first;
+
+ pr_info("driver successfully loaded.\n");
return 0;
+out_idev_reg_first:
+ input_unregister_device(hdaps_idev);
out_idev:
- input_free_polled_device(hdaps_idev);
+ input_free_device(hdaps_idev_raw);
+out_idev_first:
+ input_free_device(hdaps_idev);
out_group:
sysfs_remove_group(&pdev->dev.kobj, &hdaps_attribute_group);
out_device:
platform_device_unregister(pdev);
out_driver:
platform_driver_unregister(&hdaps_driver);
-out_region:
- release_region(HDAPS_LOW_PORT, HDAPS_NR_PORTS);
+ hdaps_device_shutdown();
out:
pr_warn("driver init failed (ret=%d)!\n", ret);
return ret;
@@ -607,12 +869,12 @@ static int __init hdaps_init(void)
static void __exit hdaps_exit(void)
{
- input_unregister_polled_device(hdaps_idev);
- input_free_polled_device(hdaps_idev);
+ input_unregister_device(hdaps_idev_raw);
+ input_unregister_device(hdaps_idev);
+ hdaps_device_shutdown(); /* ignore errors, effect is negligible */
sysfs_remove_group(&pdev->dev.kobj, &hdaps_attribute_group);
platform_device_unregister(pdev);
platform_driver_unregister(&hdaps_driver);
- release_region(HDAPS_LOW_PORT, HDAPS_NR_PORTS);
pr_info("driver unloaded\n");
}
@@ -620,9 +882,8 @@ static void __exit hdaps_exit(void)
module_init(hdaps_init);
module_exit(hdaps_exit);
-module_param_named(invert, hdaps_invert, int, 0);
-MODULE_PARM_DESC(invert, "invert data along each axis. 1 invert x-axis, "
- "2 invert y-axis, 3 invert both axes.");
+module_param_named(invert, hdaps_invert, uint, 0);
+MODULE_PARM_DESC(invert, "axis orientation code");
MODULE_AUTHOR("Robert Love");
MODULE_DESCRIPTION("IBM Hard Drive Active Protection System (HDAPS) driver");
diff --git a/drivers/platform/x86/thinkpad_ec.c b/drivers/platform/x86/thinkpad_ec.c
new file mode 100644
index 0000000000..597614bc17
--- /dev/null
+++ b/drivers/platform/x86/thinkpad_ec.c
@@ -0,0 +1,513 @@
+/*
+ * thinkpad_ec.c - ThinkPad embedded controller LPC3 functions
+ *
+ * The embedded controller on ThinkPad laptops has a non-standard interface,
+ * where LPC channel 3 of the H8S EC chip is hooked up to IO ports
+ * 0x1600-0x161F and implements (a special case of) the H8S LPC protocol.
+ * The EC LPC interface provides various system management services (currently
+ * known: battery information and accelerometer readouts). This driver
+ * provides access and mutual exclusion for the EC interface.
+*
+ * The LPC protocol and terminology are documented here:
+ * "H8S/2104B Group Hardware Manual",
+ * http://documentation.renesas.com/eng/products/mpumcu/rej09b0300_2140bhm.pdf
+ *
+ * Copyright (C) 2006-2007 Shem Multinymous <multinymous@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/dmi.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/thinkpad_ec.h>
+#include <linux/jiffies.h>
+#include <asm/io.h>
+
+#include <linux/version.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)
+ #include <asm/semaphore.h>
+#else
+ #include <linux/semaphore.h>
+#endif
+
+#define TP_VERSION "0.42"
+
+MODULE_AUTHOR("Shem Multinymous");
+MODULE_DESCRIPTION("ThinkPad embedded controller hardware access");
+MODULE_VERSION(TP_VERSION);
+MODULE_LICENSE("GPL");
+
+/* IO ports used by embedded controller LPC channel 3: */
+#define TPC_BASE_PORT 0x1600
+#define TPC_NUM_PORTS 0x20
+#define TPC_STR3_PORT 0x1604 /* Reads H8S EC register STR3 */
+#define TPC_TWR0_PORT 0x1610 /* Mapped to H8S EC register TWR0MW/SW */
+#define TPC_TWR15_PORT 0x161F /* Mapped to H8S EC register TWR15. */
+ /* (and port TPC_TWR0_PORT+i is mapped to H8S reg TWRi for 0<i<16) */
+
+/* H8S STR3 status flags (see "H8S/2104B Group Hardware Manual" p.549) */
+#define H8S_STR3_IBF3B 0x80 /* Bidi. Data Register Input Buffer Full */
+#define H8S_STR3_OBF3B 0x40 /* Bidi. Data Register Output Buffer Full */
+#define H8S_STR3_MWMF 0x20 /* Master Write Mode Flag */
+#define H8S_STR3_SWMF 0x10 /* Slave Write Mode Flag */
+#define H8S_STR3_MASK 0xF0 /* All bits we care about in STR3 */
+
+/* Timeouts and retries */
+#define TPC_READ_RETRIES 150
+#define TPC_READ_NDELAY 500
+#define TPC_REQUEST_RETRIES 1000
+#define TPC_REQUEST_NDELAY 10
+#define TPC_PREFETCH_TIMEOUT (HZ/10) /* invalidate prefetch after 0.1sec */
+
+/* A few macros for printk()ing: */
+#define MSG_FMT(fmt, args...) \
+ "thinkpad_ec: %s: " fmt "\n", __func__, ## args
+#define REQ_FMT(msg, code) \
+ MSG_FMT("%s: (0x%02x:0x%02x)->0x%02x", \
+ msg, args->val[0x0], args->val[0xF], code)
+
+/* State of request prefetching: */
+static u8 prefetch_arg0, prefetch_argF; /* Args of last prefetch */
+static u64 prefetch_jiffies; /* time of prefetch, or: */
+#define TPC_PREFETCH_NONE INITIAL_JIFFIES /* No prefetch */
+#define TPC_PREFETCH_JUNK (INITIAL_JIFFIES+1) /* Ignore prefetch */
+
+/* Locking: */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
+static DECLARE_MUTEX(thinkpad_ec_mutex);
+#else
+static DEFINE_SEMAPHORE(thinkpad_ec_mutex);
+#endif
+
+/* Kludge in case the ACPI DSDT reserves the ports we need. */
+static bool force_io; /* Willing to do IO to ports we couldn't reserve? */
+static int reserved_io; /* Successfully reserved the ports? */
+module_param_named(force_io, force_io, bool, 0600);
+MODULE_PARM_DESC(force_io, "Force IO even if region already reserved (0=off, 1=on)");
+
+/**
+ * thinkpad_ec_lock - get lock on the ThinkPad EC
+ *
+ * Get exclusive lock for accesing the ThinkPad embedded controller LPC3
+ * interface. Returns 0 iff lock acquired.
+ */
+int thinkpad_ec_lock(void)
+{
+ int ret;
+ ret = down_interruptible(&thinkpad_ec_mutex);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(thinkpad_ec_lock);
+
+/**
+ * thinkpad_ec_try_lock - try getting lock on the ThinkPad EC
+ *
+ * Try getting an exclusive lock for accesing the ThinkPad embedded
+ * controller LPC3. Returns immediately if lock is not available; neither
+ * blocks nor sleeps. Returns 0 iff lock acquired .
+ */
+int thinkpad_ec_try_lock(void)
+{
+ return down_trylock(&thinkpad_ec_mutex);
+}
+EXPORT_SYMBOL_GPL(thinkpad_ec_try_lock);
+
+/**
+ * thinkpad_ec_unlock - release lock on ThinkPad EC
+ *
+ * Release a previously acquired exclusive lock on the ThinkPad ebmedded
+ * controller LPC3 interface.
+ */
+void thinkpad_ec_unlock(void)
+{
+ up(&thinkpad_ec_mutex);
+}
+EXPORT_SYMBOL_GPL(thinkpad_ec_unlock);
+
+/**
+ * thinkpad_ec_request_row - tell embedded controller to prepare a row
+ * @args Input register arguments
+ *
+ * Requests a data row by writing to H8S LPC registers TRW0 through TWR15 (or
+ * a subset thereof) following the protocol prescribed by the "H8S/2104B Group
+ * Hardware Manual". Does sanity checks via status register STR3.
+ */
+static int thinkpad_ec_request_row(const struct thinkpad_ec_row *args)
+{
+ u8 str3;
+ int i;
+
+ /* EC protocol requires write to TWR0 (function code): */
+ if (!(args->mask & 0x0001)) {
+ printk(KERN_ERR MSG_FMT("bad args->mask=0x%02x", args->mask));
+ return -EINVAL;
+ }
+
+ /* Check initial STR3 status: */
+ str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK;
+ if (str3 & H8S_STR3_OBF3B) { /* data already pending */
+ inb(TPC_TWR15_PORT); /* marks end of previous transaction */
+ if (prefetch_jiffies == TPC_PREFETCH_NONE)
+ printk(KERN_WARNING REQ_FMT(
+ "EC has result from unrequested transaction",
+ str3));
+ return -EBUSY; /* EC will be ready in a few usecs */
+ } else if (str3 == H8S_STR3_SWMF) { /* busy with previous request */
+ if (prefetch_jiffies == TPC_PREFETCH_NONE)
+ printk(KERN_WARNING REQ_FMT(
+ "EC is busy with unrequested transaction",
+ str3));
+ return -EBUSY; /* data will be pending in a few usecs */
+ } else if (str3 != 0x00) { /* unexpected status? */
+ printk(KERN_WARNING REQ_FMT("unexpected initial STR3", str3));
+ return -EIO;
+ }
+
+ /* Send TWR0MW: */
+ outb(args->val[0], TPC_TWR0_PORT);
+ str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK;
+ if (str3 != H8S_STR3_MWMF) { /* not accepted? */
+ printk(KERN_WARNING REQ_FMT("arg0 rejected", str3));
+ return -EIO;
+ }
+
+ /* Send TWR1 through TWR14: */
+ for (i = 1; i < TP_CONTROLLER_ROW_LEN-1; i++)
+ if ((args->mask>>i)&1)
+ outb(args->val[i], TPC_TWR0_PORT+i);
+
+ /* Send TWR15 (default to 0x01). This marks end of command. */
+ outb((args->mask & 0x8000) ? args->val[0xF] : 0x01, TPC_TWR15_PORT);
+
+ /* Wait until EC starts writing its reply (~60ns on average).
+ * Releasing locks before this happens may cause an EC hang
+ * due to firmware bug!
+ */
+ for (i = 0; i < TPC_REQUEST_RETRIES; i++) {
+ str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK;
+ if (str3 & H8S_STR3_SWMF) /* EC started replying */
+ return 0;
+ else if (!(str3 & ~(H8S_STR3_IBF3B|H8S_STR3_MWMF)))
+ /* Normal progress (the EC hasn't seen the request
+ * yet, or is processing it). Wait it out. */
+ ndelay(TPC_REQUEST_NDELAY);
+ else { /* weird EC status */
+ printk(KERN_WARNING
+ REQ_FMT("bad end STR3", str3));
+ return -EIO;
+ }
+ }
+ printk(KERN_WARNING REQ_FMT("EC is mysteriously silent", str3));
+ return -EIO;
+}
+
+/**
+ * thinkpad_ec_read_data - read pre-requested row-data from EC
+ * @args Input register arguments of pre-requested rows
+ * @data Output register values
+ *
+ * Reads current row data from the controller, assuming it's already
+ * requested. Follows the H8S spec for register access and status checks.
+ */
+static int thinkpad_ec_read_data(const struct thinkpad_ec_row *args,
+ struct thinkpad_ec_row *data)
+{
+ int i;
+ u8 str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK;
+ /* Once we make a request, STR3 assumes the sequence of values listed
+ * in the following 'if' as it reads the request and writes its data.
+ * It takes about a few dozen nanosecs total, with very high variance.
+ */
+ if (str3 == (H8S_STR3_IBF3B|H8S_STR3_MWMF) ||
+ str3 == 0x00 || /* the 0x00 is indistinguishable from idle EC! */
+ str3 == H8S_STR3_SWMF)
+ return -EBUSY; /* not ready yet */
+ /* Finally, the EC signals output buffer full: */
+ if (str3 != (H8S_STR3_OBF3B|H8S_STR3_SWMF)) {
+ printk(KERN_WARNING
+ REQ_FMT("bad initial STR3", str3));
+ return -EIO;
+ }
+
+ /* Read first byte (signals start of read transactions): */
+ data->val[0] = inb(TPC_TWR0_PORT);
+ /* Optionally read 14 more bytes: */
+ for (i = 1; i < TP_CONTROLLER_ROW_LEN-1; i++)
+ if ((data->mask >> i)&1)
+ data->val[i] = inb(TPC_TWR0_PORT+i);
+ /* Read last byte from 0x161F (signals end of read transaction): */
+ data->val[0xF] = inb(TPC_TWR15_PORT);
+
+ /* Readout still pending? */
+ str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK;
+ if (str3 & H8S_STR3_OBF3B)
+ printk(KERN_WARNING
+ REQ_FMT("OBF3B=1 after read", str3));
+ /* If port 0x161F returns 0x80 too often, the EC may lock up. Warn: */
+ if (data->val[0xF] == 0x80)
+ printk(KERN_WARNING
+ REQ_FMT("0x161F reports error", data->val[0xF]));
+ return 0;
+}
+
+/**
+ * thinkpad_ec_is_row_fetched - is the given row currently prefetched?
+ *
+ * To keep things simple we compare only the first and last args;
+ * this suffices for all known cases.
+ */
+static int thinkpad_ec_is_row_fetched(const struct thinkpad_ec_row *args)
+{
+ return (prefetch_jiffies != TPC_PREFETCH_NONE) &&
+ (prefetch_jiffies != TPC_PREFETCH_JUNK) &&
+ (prefetch_arg0 == args->val[0]) &&
+ (prefetch_argF == args->val[0xF]) &&
+ (get_jiffies_64() < prefetch_jiffies + TPC_PREFETCH_TIMEOUT);
+}
+
+/**
+ * thinkpad_ec_read_row - request and read data from ThinkPad EC
+ * @args Input register arguments
+ * @data Output register values
+ *
+ * Read a data row from the ThinkPad embedded controller LPC3 interface.
+ * Does fetching and retrying if needed. The row is specified by an
+ * array of 16 bytes, some of which may be undefined (but the first is
+ * mandatory). These bytes are given in @args->val[], where @args->val[i] is
+ * used iff (@args->mask>>i)&1). The resulting row data is stored in
+ * @data->val[], but is only guaranteed to be valid for indices corresponding
+ * to set bit in @data->mask. That is, if @data->mask&(1<<i)==0 then
+ * @data->val[i] is undefined.
+ *
+ * Returns -EBUSY on transient error and -EIO on abnormal condition.
+ * Caller must hold controller lock.
+ */
+int thinkpad_ec_read_row(const struct thinkpad_ec_row *args,
+ struct thinkpad_ec_row *data)
+{
+ int retries, ret;
+
+ if (thinkpad_ec_is_row_fetched(args))
+ goto read_row; /* already requested */
+
+ /* Request the row */
+ for (retries = 0; retries < TPC_READ_RETRIES; ++retries) {
+ ret = thinkpad_ec_request_row(args);
+ if (!ret)
+ goto read_row;
+ if (ret != -EBUSY)
+ break;
+ ndelay(TPC_READ_NDELAY);
+ }
+ printk(KERN_ERR REQ_FMT("failed requesting row", ret));
+ goto out;
+
+read_row:
+ /* Read the row's data */
+ for (retries = 0; retries < TPC_READ_RETRIES; ++retries) {
+ ret = thinkpad_ec_read_data(args, data);
+ if (!ret)
+ goto out;
+ if (ret != -EBUSY)
+ break;
+ ndelay(TPC_READ_NDELAY);
+ }
+
+ printk(KERN_ERR REQ_FMT("failed waiting for data", ret));
+
+out:
+ prefetch_jiffies = TPC_PREFETCH_JUNK;
+ return ret;
+}
+EXPORT_SYMBOL_GPL(thinkpad_ec_read_row);
+
+/**
+ * thinkpad_ec_try_read_row - try reading prefetched data from ThinkPad EC
+ * @args Input register arguments
+ * @data Output register values
+ *
+ * Try reading a data row from the ThinkPad embedded controller LPC3
+ * interface, if this raw was recently prefetched using
+ * thinkpad_ec_prefetch_row(). Does not fetch, retry or block.
+ * The parameters have the same meaning as in thinkpad_ec_read_row().
+ *
+ * Returns -EBUSY is data not ready and -ENODATA if row not prefetched.
+ * Caller must hold controller lock.
+ */
+int thinkpad_ec_try_read_row(const struct thinkpad_ec_row *args,
+ struct thinkpad_ec_row *data)
+{
+ int ret;
+ if (!thinkpad_ec_is_row_fetched(args)) {
+ ret = -ENODATA;
+ } else {
+ ret = thinkpad_ec_read_data(args, data);
+ if (!ret)
+ prefetch_jiffies = TPC_PREFETCH_NONE; /* eaten up */
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(thinkpad_ec_try_read_row);
+
+/**
+ * thinkpad_ec_prefetch_row - prefetch data from ThinkPad EC
+ * @args Input register arguments
+ *
+ * Prefetch a data row from the ThinkPad embedded controller LCP3
+ * interface. A subsequent call to thinkpad_ec_read_row() with the
+ * same arguments will be faster, and a subsequent call to
+ * thinkpad_ec_try_read_row() stands a good chance of succeeding if
+ * done neither too soon nor too late. See
+ * thinkpad_ec_read_row() for the meaning of @args.
+ *
+ * Returns -EBUSY on transient error and -EIO on abnormal condition.
+ * Caller must hold controller lock.
+ */
+int thinkpad_ec_prefetch_row(const struct thinkpad_ec_row *args)
+{
+ int ret;
+ ret = thinkpad_ec_request_row(args);
+ if (ret) {
+ prefetch_jiffies = TPC_PREFETCH_JUNK;
+ } else {
+ prefetch_jiffies = get_jiffies_64();
+ prefetch_arg0 = args->val[0x0];
+ prefetch_argF = args->val[0xF];
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(thinkpad_ec_prefetch_row);
+
+/**
+ * thinkpad_ec_invalidate - invalidate prefetched ThinkPad EC data
+ *
+ * Invalidate the data prefetched via thinkpad_ec_prefetch_row() from the
+ * ThinkPad embedded controller LPC3 interface.
+ * Must be called before unlocking by any code that accesses the controller
+ * ports directly.
+ */
+void thinkpad_ec_invalidate(void)
+{
+ prefetch_jiffies = TPC_PREFETCH_JUNK;
+}
+EXPORT_SYMBOL_GPL(thinkpad_ec_invalidate);
+
+
+/*** Checking for EC hardware ***/
+
+/**
+ * thinkpad_ec_test - verify the EC is present and follows protocol
+ *
+ * Ensure the EC LPC3 channel really works on this machine by making
+ * an EC request and seeing if the EC follows the documented H8S protocol.
+ * The requested row just reads battery status, so it should be harmless to
+ * access it (on a correct EC).
+ * This test writes to IO ports, so execute only after checking DMI.
+ */
+static int __init thinkpad_ec_test(void)
+{
+ int ret;
+ const struct thinkpad_ec_row args = /* battery 0 basic status */
+ { .mask = 0x8001, .val = {0x01,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0x00} };
+ struct thinkpad_ec_row data = { .mask = 0x0000 };
+ ret = thinkpad_ec_lock();
+ if (ret)
+ return ret;
+ ret = thinkpad_ec_read_row(&args, &data);
+ thinkpad_ec_unlock();
+ return ret;
+}
+
+/* Search all DMI device names of a given type for a substring */
+static int __init dmi_find_substring(int type, const char *substr)
+{
+ const struct dmi_device *dev = NULL;
+ while ((dev = dmi_find_device(type, NULL, dev))) {
+ if (strstr(dev->name, substr))
+ return 1;
+ }
+ return 0;
+}
+
+#define TP_DMI_MATCH(vendor,model) { \
+ .ident = vendor " " model, \
+ .matches = { \
+ DMI_MATCH(DMI_BOARD_VENDOR, vendor), \
+ DMI_MATCH(DMI_PRODUCT_VERSION, model) \
+ } \
+}
+
+/* Check DMI for existence of ThinkPad embedded controller */
+static int __init check_dmi_for_ec(void)
+{
+ /* A few old models that have a good EC but don't report it in DMI */
+ struct dmi_system_id tp_whitelist[] = {
+ TP_DMI_MATCH("IBM", "ThinkPad A30"),
+ TP_DMI_MATCH("IBM", "ThinkPad T23"),
+ TP_DMI_MATCH("IBM", "ThinkPad X24"),
+ TP_DMI_MATCH("LENOVO", "ThinkPad"),
+ { .ident = NULL }
+ };
+ return dmi_find_substring(DMI_DEV_TYPE_OEM_STRING,
+ "IBM ThinkPad Embedded Controller") ||
+ dmi_check_system(tp_whitelist);
+}
+
+/*** Init and cleanup ***/
+
+static int __init thinkpad_ec_init(void)
+{
+ if (!check_dmi_for_ec()) {
+ printk(KERN_WARNING
+ "thinkpad_ec: no ThinkPad embedded controller!\n");
+ return -ENODEV;
+ }
+
+ if (request_region(TPC_BASE_PORT, TPC_NUM_PORTS, "thinkpad_ec")) {
+ reserved_io = 1;
+ } else {
+ printk(KERN_ERR "thinkpad_ec: cannot claim IO ports %#x-%#x... ",
+ TPC_BASE_PORT,
+ TPC_BASE_PORT + TPC_NUM_PORTS - 1);
+ if (force_io) {
+ printk("forcing use of unreserved IO ports.\n");
+ } else {
+ printk("consider using force_io=1.\n");
+ return -ENXIO;
+ }
+ }
+ prefetch_jiffies = TPC_PREFETCH_JUNK;
+ if (thinkpad_ec_test()) {
+ printk(KERN_ERR "thinkpad_ec: initial ec test failed\n");
+ if (reserved_io)
+ release_region(TPC_BASE_PORT, TPC_NUM_PORTS);
+ return -ENXIO;
+ }
+ printk(KERN_INFO "thinkpad_ec: thinkpad_ec " TP_VERSION " loaded.\n");
+ return 0;
+}
+
+static void __exit thinkpad_ec_exit(void)
+{
+ if (reserved_io)
+ release_region(TPC_BASE_PORT, TPC_NUM_PORTS);
+ printk(KERN_INFO "thinkpad_ec: unloaded.\n");
+}
+
+module_init(thinkpad_ec_init);
+module_exit(thinkpad_ec_exit);
diff --git a/drivers/platform/x86/tp_smapi.c b/drivers/platform/x86/tp_smapi.c
new file mode 100644
index 0000000000..209cb6487e
--- /dev/null
+++ b/drivers/platform/x86/tp_smapi.c
@@ -0,0 +1,1493 @@
+/*
+ * tp_smapi.c - ThinkPad SMAPI support
+ *
+ * This driver exposes some features of the System Management Application
+ * Program Interface (SMAPI) BIOS found on ThinkPad laptops. It works on
+ * models in which the SMAPI BIOS runs in SMM and is invoked by writing
+ * to the APM control port 0xB2.
+ * It also exposes battery status information, obtained from the ThinkPad
+ * embedded controller (via the thinkpad_ec module).
+ * Ancient ThinkPad models use a different interface, supported by the
+ * "thinkpad" module from "tpctl".
+ *
+ * Many of the battery status values obtained from the EC simply mirror
+ * values provided by the battery's Smart Battery System (SBS) interface, so
+ * their meaning is defined by the Smart Battery Data Specification (see
+ * http://sbs-forum.org/specs/sbdat110.pdf). References to this SBS spec
+ * are given in the code where relevant.
+ *
+ * Copyright (C) 2006 Shem Multinymous <multinymous@gmail.com>.
+ * SMAPI access code based on the mwave driver by Mike Sullivan.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <linux/mc146818rtc.h> /* CMOS defines */
+#include <linux/delay.h>
+#include <linux/version.h>
+#include <linux/thinkpad_ec.h>
+#include <linux/platform_device.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+
+#define TP_VERSION "0.42"
+#define TP_DESC "ThinkPad SMAPI Support"
+#define TP_DIR "smapi"
+
+MODULE_AUTHOR("Shem Multinymous");
+MODULE_DESCRIPTION(TP_DESC);
+MODULE_VERSION(TP_VERSION);
+MODULE_LICENSE("GPL");
+
+static struct platform_device *pdev;
+
+static int tp_debug;
+module_param_named(debug, tp_debug, int, 0600);
+MODULE_PARM_DESC(debug, "Debug level (0=off, 1=on)");
+
+/* A few macros for printk()ing: */
+#define TPRINTK(level, fmt, args...) \
+ dev_printk(level, &(pdev->dev), "%s: " fmt "\n", __func__, ## args)
+#define DPRINTK(fmt, args...) \
+ do { if (tp_debug) TPRINTK(KERN_DEBUG, fmt, ## args); } while (0)
+
+/*********************************************************************
+ * SMAPI interface
+ */
+
+/* SMAPI functions (register BX when making the SMM call). */
+#define SMAPI_GET_INHIBIT_CHARGE 0x2114
+#define SMAPI_SET_INHIBIT_CHARGE 0x2115
+#define SMAPI_GET_THRESH_START 0x2116
+#define SMAPI_SET_THRESH_START 0x2117
+#define SMAPI_GET_FORCE_DISCHARGE 0x2118
+#define SMAPI_SET_FORCE_DISCHARGE 0x2119
+#define SMAPI_GET_THRESH_STOP 0x211a
+#define SMAPI_SET_THRESH_STOP 0x211b
+
+/* SMAPI error codes (see ThinkPad 770 Technical Reference Manual p.83 at
+ http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=PFAN-3TUQQD */
+#define SMAPI_RETCODE_EOF 0xff
+static struct { u8 rc; char *msg; int ret; } smapi_retcode[] =
+{
+ {0x00, "OK", 0},
+ {0x53, "SMAPI function is not available", -ENXIO},
+ {0x81, "Invalid parameter", -EINVAL},
+ {0x86, "Function is not supported by SMAPI BIOS", -EOPNOTSUPP},
+ {0x90, "System error", -EIO},
+ {0x91, "System is invalid", -EIO},
+ {0x92, "System is busy, -EBUSY"},
+ {0xa0, "Device error (disk read error)", -EIO},
+ {0xa1, "Device is busy", -EBUSY},
+ {0xa2, "Device is not attached", -ENXIO},
+ {0xa3, "Device is disbled", -EIO},
+ {0xa4, "Request parameter is out of range", -EINVAL},
+ {0xa5, "Request parameter is not accepted", -EINVAL},
+ {0xa6, "Transient error", -EBUSY}, /* ? */
+ {SMAPI_RETCODE_EOF, "Unknown error code", -EIO}
+};
+
+
+#define SMAPI_MAX_RETRIES 10
+#define SMAPI_PORT2 0x4F /* fixed port, meaning unclear */
+static unsigned short smapi_port; /* APM control port, normally 0xB2 */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
+static DECLARE_MUTEX(smapi_mutex);
+#else
+static DEFINE_SEMAPHORE(smapi_mutex);
+#endif
+
+/**
+ * find_smapi_port - read SMAPI port from NVRAM
+ */
+static int __init find_smapi_port(void)
+{
+ u16 smapi_id = 0;
+ unsigned short port = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&rtc_lock, flags);
+ smapi_id = CMOS_READ(0x7C);
+ smapi_id |= (CMOS_READ(0x7D) << 8);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+
+ if (smapi_id != 0x5349) {
+ printk(KERN_ERR "SMAPI not supported (ID=0x%x)\n", smapi_id);
+ return -ENXIO;
+ }
+ spin_lock_irqsave(&rtc_lock, flags);
+ port = CMOS_READ(0x7E);
+ port |= (CMOS_READ(0x7F) << 8);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+ if (port == 0) {
+ printk(KERN_ERR "unable to read SMAPI port number\n");
+ return -ENXIO;
+ }
+ return port;
+}
+
+/**
+ * smapi_request - make a SMAPI call
+ * @inEBX, @inECX, @inEDI, @inESI: input registers
+ * @outEBX, @outECX, @outEDX, @outEDI, @outESI: outputs registers
+ * @msg: textual error message
+ * Invokes the SMAPI SMBIOS with the given input and outpu args.
+ * All outputs are optional (can be %NULL).
+ * Returns 0 when successful, and a negative errno constant
+ * (see smapi_retcode above) upon failure.
+ */
+static int smapi_request(u32 inEBX, u32 inECX,
+ u32 inEDI, u32 inESI,
+ u32 *outEBX, u32 *outECX, u32 *outEDX,
+ u32 *outEDI, u32 *outESI, const char **msg)
+{
+ int ret = 0;
+ int i;
+ int retries;
+ u8 rc;
+ /* Must use local vars for output regs, due to reg pressure. */
+ u32 tmpEAX, tmpEBX, tmpECX, tmpEDX, tmpEDI, tmpESI;
+
+ for (retries = 0; retries < SMAPI_MAX_RETRIES; ++retries) {
+ DPRINTK("req_in: BX=%x CX=%x DI=%x SI=%x",
+ inEBX, inECX, inEDI, inESI);
+
+ /* SMAPI's SMBIOS call and thinkpad_ec end up using use
+ * different interfaces to the same chip, so play it safe. */
+ ret = thinkpad_ec_lock();
+ if (ret)
+ return ret;
+
+ __asm__ __volatile__(
+ "movl $0x00005380,%%eax\n\t"
+ "movl %6,%%ebx\n\t"
+ "movl %7,%%ecx\n\t"
+ "movl %8,%%edi\n\t"
+ "movl %9,%%esi\n\t"
+ "xorl %%edx,%%edx\n\t"
+ "movw %10,%%dx\n\t"
+ "out %%al,%%dx\n\t" /* trigger SMI to SMBIOS */
+ "out %%al,$0x4F\n\t"
+ "movl %%eax,%0\n\t"
+ "movl %%ebx,%1\n\t"
+ "movl %%ecx,%2\n\t"
+ "movl %%edx,%3\n\t"
+ "movl %%edi,%4\n\t"
+ "movl %%esi,%5\n\t"
+ :"=m"(tmpEAX),
+ "=m"(tmpEBX),
+ "=m"(tmpECX),
+ "=m"(tmpEDX),
+ "=m"(tmpEDI),
+ "=m"(tmpESI)
+ :"m"(inEBX), "m"(inECX), "m"(inEDI), "m"(inESI),
+ "m"((u16)smapi_port)
+ :"%eax", "%ebx", "%ecx", "%edx", "%edi",
+ "%esi");
+
+ thinkpad_ec_invalidate();
+ thinkpad_ec_unlock();
+
+ /* Don't let the next SMAPI access happen too quickly,
+ * may case problems. (We're hold smapi_mutex). */
+ msleep(50);
+
+ if (outEBX) *outEBX = tmpEBX;
+ if (outECX) *outECX = tmpECX;
+ if (outEDX) *outEDX = tmpEDX;
+ if (outESI) *outESI = tmpESI;
+ if (outEDI) *outEDI = tmpEDI;
+
+ /* Look up error code */
+ rc = (tmpEAX>>8)&0xFF;
+ for (i = 0; smapi_retcode[i].rc != SMAPI_RETCODE_EOF &&
+ smapi_retcode[i].rc != rc; ++i) {}
+ ret = smapi_retcode[i].ret;
+ if (msg)
+ *msg = smapi_retcode[i].msg;
+
+ DPRINTK("req_out: AX=%x BX=%x CX=%x DX=%x DI=%x SI=%x r=%d",
+ tmpEAX, tmpEBX, tmpECX, tmpEDX, tmpEDI, tmpESI, ret);
+ if (ret)
+ TPRINTK(KERN_NOTICE, "SMAPI error: %s (func=%x)",
+ smapi_retcode[i].msg, inEBX);
+
+ if (ret != -EBUSY)
+ return ret;
+ }
+ return ret;
+}
+
+/* Convenience wrapper: discard output arguments */
+static int smapi_write(u32 inEBX, u32 inECX,
+ u32 inEDI, u32 inESI, const char **msg)
+{
+ return smapi_request(inEBX, inECX, inEDI, inESI,
+ NULL, NULL, NULL, NULL, NULL, msg);
+}
+
+
+/*********************************************************************
+ * Specific SMAPI services
+ * All of these functions return 0 upon success, and a negative errno
+ * constant (see smapi_retcode) on failure.
+ */
+
+enum thresh_type {
+ THRESH_STOP = 0, /* the code assumes this is 0 for brevity */
+ THRESH_START
+};
+#define THRESH_NAME(which) ((which == THRESH_START) ? "start" : "stop")
+
+/**
+ * __get_real_thresh - read battery charge start/stop threshold from SMAPI
+ * @bat: battery number (0 or 1)
+ * @which: THRESH_START or THRESH_STOP
+ * @thresh: 1..99, 0=default 1..99, 0=default (pass this as-is to SMAPI)
+ * @outEDI: some additional state that needs to be preserved, meaning unknown
+ * @outESI: some additional state that needs to be preserved, meaning unknown
+ */
+static int __get_real_thresh(int bat, enum thresh_type which, int *thresh,
+ u32 *outEDI, u32 *outESI)
+{
+ u32 ebx = (which == THRESH_START) ? SMAPI_GET_THRESH_START
+ : SMAPI_GET_THRESH_STOP;
+ u32 ecx = (bat+1)<<8;
+ const char *msg;
+ int ret = smapi_request(ebx, ecx, 0, 0, NULL,
+ &ecx, NULL, outEDI, outESI, &msg);
+ if (ret) {
+ TPRINTK(KERN_NOTICE, "cannot get %s_thresh of bat=%d: %s",
+ THRESH_NAME(which), bat, msg);
+ return ret;
+ }
+ if (!(ecx&0x00000100)) {
+ TPRINTK(KERN_NOTICE, "cannot get %s_thresh of bat=%d: ecx=0%x",
+ THRESH_NAME(which), bat, ecx);
+ return -EIO;
+ }
+ if (thresh)
+ *thresh = ecx&0xFF;
+ return 0;
+}
+
+/**
+ * get_real_thresh - read battery charge start/stop threshold from SMAPI
+ * @bat: battery number (0 or 1)
+ * @which: THRESH_START or THRESH_STOP
+ * @thresh: 1..99, 0=default (passes as-is to SMAPI)
+ */
+static int get_real_thresh(int bat, enum thresh_type which, int *thresh)
+{
+ return __get_real_thresh(bat, which, thresh, NULL, NULL);
+}
+
+/**
+ * set_real_thresh - write battery start/top charge threshold to SMAPI
+ * @bat: battery number (0 or 1)
+ * @which: THRESH_START or THRESH_STOP
+ * @thresh: 1..99, 0=default (passes as-is to SMAPI)
+ */
+static int set_real_thresh(int bat, enum thresh_type which, int thresh)
+{
+ u32 ebx = (which == THRESH_START) ? SMAPI_SET_THRESH_START
+ : SMAPI_SET_THRESH_STOP;
+ u32 ecx = ((bat+1)<<8) + thresh;
+ u32 getDI, getSI;
+ const char *msg;
+ int ret;
+
+ /* verify read before writing */
+ ret = __get_real_thresh(bat, which, NULL, &getDI, &getSI);
+ if (ret)
+ return ret;
+
+ ret = smapi_write(ebx, ecx, getDI, getSI, &msg);
+ if (ret)
+ TPRINTK(KERN_NOTICE, "set %s to %d for bat=%d failed: %s",
+ THRESH_NAME(which), thresh, bat, msg);
+ else
+ TPRINTK(KERN_INFO, "set %s to %d for bat=%d",
+ THRESH_NAME(which), thresh, bat);
+ return ret;
+}
+
+/**
+ * __get_inhibit_charge_minutes - get inhibit charge period from SMAPI
+ * @bat: battery number (0 or 1)
+ * @minutes: period in minutes (1..65535 minutes, 0=disabled)
+ * @outECX: some additional state that needs to be preserved, meaning unknown
+ * Note that @minutes is the originally set value, it does not count down.
+ */
+static int __get_inhibit_charge_minutes(int bat, int *minutes, u32 *outECX)
+{
+ u32 ecx = (bat+1)<<8;
+ u32 esi;
+ const char *msg;
+ int ret = smapi_request(SMAPI_GET_INHIBIT_CHARGE, ecx, 0, 0,
+ NULL, &ecx, NULL, NULL, &esi, &msg);
+ if (ret) {
+ TPRINTK(KERN_NOTICE, "failed for bat=%d: %s", bat, msg);
+ return ret;
+ }
+ if (!(ecx&0x0100)) {
+ TPRINTK(KERN_NOTICE, "bad ecx=0x%x for bat=%d", ecx, bat);
+ return -EIO;
+ }
+ if (minutes)
+ *minutes = (ecx&0x0001)?esi:0;
+ if (outECX)
+ *outECX = ecx;
+ return 0;
+}
+
+/**
+ * get_inhibit_charge_minutes - get inhibit charge period from SMAPI
+ * @bat: battery number (0 or 1)
+ * @minutes: period in minutes (1..65535 minutes, 0=disabled)
+ * Note that @minutes is the originally set value, it does not count down.
+ */
+static int get_inhibit_charge_minutes(int bat, int *minutes)
+{
+ return __get_inhibit_charge_minutes(bat, minutes, NULL);
+}
+
+/**
+ * set_inhibit_charge_minutes - write inhibit charge period to SMAPI
+ * @bat: battery number (0 or 1)
+ * @minutes: period in minutes (1..65535 minutes, 0=disabled)
+ */
+static int set_inhibit_charge_minutes(int bat, int minutes)
+{
+ u32 ecx;
+ const char *msg;
+ int ret;
+
+ /* verify read before writing */
+ ret = __get_inhibit_charge_minutes(bat, NULL, &ecx);
+ if (ret)
+ return ret;
+
+ ecx = ((bat+1)<<8) | (ecx&0x00FE) | (minutes > 0 ? 0x0001 : 0x0000);
+ if (minutes > 0xFFFF)
+ minutes = 0xFFFF;
+ ret = smapi_write(SMAPI_SET_INHIBIT_CHARGE, ecx, 0, minutes, &msg);
+ if (ret)
+ TPRINTK(KERN_NOTICE,
+ "set to %d failed for bat=%d: %s", minutes, bat, msg);
+ else
+ TPRINTK(KERN_INFO, "set to %d for bat=%d\n", minutes, bat);
+ return ret;
+}
+
+
+/**
+ * get_force_discharge - get status of forced discharging from SMAPI
+ * @bat: battery number (0 or 1)
+ * @enabled: 1 if forced discharged is enabled, 0 if not
+ */
+static int get_force_discharge(int bat, int *enabled)
+{
+ u32 ecx = (bat+1)<<8;
+ const char *msg;
+ int ret = smapi_request(SMAPI_GET_FORCE_DISCHARGE, ecx, 0, 0,
+ NULL, &ecx, NULL, NULL, NULL, &msg);
+ if (ret) {
+ TPRINTK(KERN_NOTICE, "failed for bat=%d: %s", bat, msg);
+ return ret;
+ }
+ *enabled = (!(ecx&0x00000100) && (ecx&0x00000001))?1:0;
+ return 0;
+}
+
+/**
+ * set_force_discharge - write status of forced discharging to SMAPI
+ * @bat: battery number (0 or 1)
+ * @enabled: 1 if forced discharged is enabled, 0 if not
+ */
+static int set_force_discharge(int bat, int enabled)
+{
+ u32 ecx = (bat+1)<<8;
+ const char *msg;
+ int ret = smapi_request(SMAPI_GET_FORCE_DISCHARGE, ecx, 0, 0,
+ NULL, &ecx, NULL, NULL, NULL, &msg);
+ if (ret) {
+ TPRINTK(KERN_NOTICE, "get failed for bat=%d: %s", bat, msg);
+ return ret;
+ }
+ if (ecx&0x00000100) {
+ TPRINTK(KERN_NOTICE, "cannot force discharge bat=%d", bat);
+ return -EIO;
+ }
+
+ ecx = ((bat+1)<<8) | (ecx&0x000000FA) | (enabled?0x00000001:0);
+ ret = smapi_write(SMAPI_SET_FORCE_DISCHARGE, ecx, 0, 0, &msg);
+ if (ret)
+ TPRINTK(KERN_NOTICE, "set to %d failed for bat=%d: %s",
+ enabled, bat, msg);
+ else
+ TPRINTK(KERN_INFO, "set to %d for bat=%d", enabled, bat);
+ return ret;
+}
+
+
+/*********************************************************************
+ * Wrappers to threshold-related SMAPI functions, which handle default
+ * thresholds and related quirks.
+ */
+
+/* Minimum, default and minimum difference for battery charging thresholds: */
+#define MIN_THRESH_DELTA 4 /* Min delta between start and stop thresh */
+#define MIN_THRESH_START 2
+#define MAX_THRESH_START (100-MIN_THRESH_DELTA)
+#define MIN_THRESH_STOP (MIN_THRESH_START + MIN_THRESH_DELTA)
+#define MAX_THRESH_STOP 100
+#define DEFAULT_THRESH_START MAX_THRESH_START
+#define DEFAULT_THRESH_STOP MAX_THRESH_STOP
+
+/* The GUI of IBM's Battery Maximizer seems to show a start threshold that
+ * is 1 more than the value we set/get via SMAPI. Since the threshold is
+ * maintained across reboot, this can be confusing. So we kludge our
+ * interface for interoperability: */
+#define BATMAX_FIX 1
+
+/* Get charge start/stop threshold (1..100),
+ * substituting default values if needed and applying BATMAT_FIX. */
+static int get_thresh(int bat, enum thresh_type which, int *thresh)
+{
+ int ret = get_real_thresh(bat, which, thresh);
+ if (ret)
+ return ret;
+ if (*thresh == 0)
+ *thresh = (which == THRESH_START) ? DEFAULT_THRESH_START
+ : DEFAULT_THRESH_STOP;
+ else if (which == THRESH_START)
+ *thresh += BATMAX_FIX;
+ return 0;
+}
+
+
+/* Set charge start/stop threshold (1..100),
+ * substituting default values if needed and applying BATMAT_FIX. */
+static int set_thresh(int bat, enum thresh_type which, int thresh)
+{
+ if (which == THRESH_STOP && thresh == DEFAULT_THRESH_STOP)
+ thresh = 0; /* 100 is out of range, but default means 100 */
+ if (which == THRESH_START)
+ thresh -= BATMAX_FIX;
+ return set_real_thresh(bat, which, thresh);
+}
+
+/*********************************************************************
+ * ThinkPad embedded controller readout and basic functions
+ */
+
+/**
+ * read_tp_ec_row - read data row from the ThinkPad embedded controller
+ * @arg0: EC command code
+ * @bat: battery number, 0 or 1
+ * @j: the byte value to be used for "junk" (unused) input/outputs
+ * @dataval: result vector
+ */
+static int read_tp_ec_row(u8 arg0, int bat, u8 j, u8 *dataval)
+{
+ int ret;
+ const struct thinkpad_ec_row args = { .mask = 0xFFFF,
+ .val = {arg0, j,j,j,j,j,j,j,j,j,j,j,j,j,j, (u8)bat} };
+ struct thinkpad_ec_row data = { .mask = 0xFFFF };
+
+ ret = thinkpad_ec_lock();
+ if (ret)
+ return ret;
+ ret = thinkpad_ec_read_row(&args, &data);
+ thinkpad_ec_unlock();
+ memcpy(dataval, &data.val, TP_CONTROLLER_ROW_LEN);
+ return ret;
+}
+
+/**
+ * power_device_present - check for presence of battery or AC power
+ * @bat: 0 for battery 0, 1 for battery 1, otherwise AC power
+ * Returns 1 if present, 0 if not present, negative if error.
+ */
+static int power_device_present(int bat)
+{
+ u8 row[TP_CONTROLLER_ROW_LEN];
+ u8 test;
+ int ret = read_tp_ec_row(1, bat, 0, row);
+ if (ret)
+ return ret;
+ switch (bat) {
+ case 0: test = 0x40; break; /* battery 0 */
+ case 1: test = 0x20; break; /* battery 1 */
+ default: test = 0x80; /* AC power */
+ }
+ return (row[0] & test) ? 1 : 0;
+}
+
+/**
+ * bat_has_status - check if battery can report detailed status
+ * @bat: 0 for battery 0, 1 for battery 1
+ * Returns 1 if yes, 0 if no, negative if error.
+ */
+static int bat_has_status(int bat)
+{
+ u8 row[TP_CONTROLLER_ROW_LEN];
+ int ret = read_tp_ec_row(1, bat, 0, row);
+ if (ret)
+ return ret;
+ if ((row[0] & (bat?0x20:0x40)) == 0) /* no battery */
+ return 0;
+ if ((row[1] & (0x60)) == 0) /* no status */
+ return 0;
+ return 1;
+}
+
+/**
+ * get_tp_ec_bat_16 - read a 16-bit value from EC battery status data
+ * @arg0: first argument to EC
+ * @off: offset in row returned from EC
+ * @bat: battery (0 or 1)
+ * @val: the 16-bit value obtained
+ * Returns nonzero on error.
+ */
+static int get_tp_ec_bat_16(u8 arg0, int offset, int bat, u16 *val)
+{
+ u8 row[TP_CONTROLLER_ROW_LEN];
+ int ret;
+ if (bat_has_status(bat) != 1)
+ return -ENXIO;
+ ret = read_tp_ec_row(arg0, bat, 0, row);
+ if (ret)
+ return ret;
+ *val = *(u16 *)(row+offset);
+ return 0;
+}
+
+/*********************************************************************
+ * sysfs attributes for batteries -
+ * definitions and helper functions
+ */
+
+/* A custom device attribute struct which holds a battery number */
+struct bat_device_attribute {
+ struct device_attribute dev_attr;
+ int bat;
+};
+
+/**
+ * attr_get_bat - get the battery to which the attribute belongs
+ */
+static int attr_get_bat(struct device_attribute *attr)
+{
+ return container_of(attr, struct bat_device_attribute, dev_attr)->bat;
+}
+
+/**
+ * show_tp_ec_bat_u16 - show an unsigned 16-bit battery attribute
+ * @arg0: specified 1st argument of EC raw to read
+ * @offset: byte offset in EC raw data
+ * @mul: correction factor to multiply by
+ * @na_msg: string to output is value not available (0xFFFFFFFF)
+ * @attr: battery attribute
+ * @buf: output buffer
+ * The 16-bit value is read from the EC, treated as unsigned,
+ * transformed as x->mul*x, and printed to the buffer.
+ * If the value is 0xFFFFFFFF and na_msg!=%NULL, na_msg is printed instead.
+ */
+static ssize_t show_tp_ec_bat_u16(u8 arg0, int offset, int mul,
+ const char *na_msg,
+ struct device_attribute *attr, char *buf)
+{
+ u16 val;
+ int ret = get_tp_ec_bat_16(arg0, offset, attr_get_bat(attr), &val);
+ if (ret)
+ return ret;
+ if (na_msg && val == 0xFFFF)
+ return sprintf(buf, "%s\n", na_msg);
+ else
+ return sprintf(buf, "%u\n", mul*(unsigned int)val);
+}
+
+/**
+ * show_tp_ec_bat_s16 - show an signed 16-bit battery attribute
+ * @arg0: specified 1st argument of EC raw to read
+ * @offset: byte offset in EC raw data
+ * @mul: correction factor to multiply by
+ * @add: correction term to add after multiplication
+ * @attr: battery attribute
+ * @buf: output buffer
+ * The 16-bit value is read from the EC, treated as signed,
+ * transformed as x->mul*x+add, and printed to the buffer.
+ */
+static ssize_t show_tp_ec_bat_s16(u8 arg0, int offset, int mul, int add,
+ struct device_attribute *attr, char *buf)
+{
+ u16 val;
+ int ret = get_tp_ec_bat_16(arg0, offset, attr_get_bat(attr), &val);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%d\n", mul*(s16)val+add);
+}
+
+/**
+ * show_tp_ec_bat_str - show a string from EC battery status data
+ * @arg0: specified 1st argument of EC raw to read
+ * @offset: byte offset in EC raw data
+ * @maxlen: maximum string length
+ * @attr: battery attribute
+ * @buf: output buffer
+ */
+static ssize_t show_tp_ec_bat_str(u8 arg0, int offset, int maxlen,
+ struct device_attribute *attr, char *buf)
+{
+ int bat = attr_get_bat(attr);
+ u8 row[TP_CONTROLLER_ROW_LEN];
+ int ret;
+ if (bat_has_status(bat) != 1)
+ return -ENXIO;
+ ret = read_tp_ec_row(arg0, bat, 0, row);
+ if (ret)
+ return ret;
+ strncpy(buf, (char *)row+offset, maxlen);
+ buf[maxlen] = 0;
+ strcat(buf, "\n");
+ return strlen(buf);
+}
+
+/**
+ * show_tp_ec_bat_power - show a power readout from EC battery status data
+ * @arg0: specified 1st argument of EC raw to read
+ * @offV: byte offset of voltage in EC raw data
+ * @offI: byte offset of current in EC raw data
+ * @attr: battery attribute
+ * @buf: output buffer
+ * Computes the power as current*voltage from the two given readout offsets.
+ */
+static ssize_t show_tp_ec_bat_power(u8 arg0, int offV, int offI,
+ struct device_attribute *attr, char *buf)
+{
+ u8 row[TP_CONTROLLER_ROW_LEN];
+ int milliamp, millivolt, ret;
+ int bat = attr_get_bat(attr);
+ if (bat_has_status(bat) != 1)
+ return -ENXIO;
+ ret = read_tp_ec_row(1, bat, 0, row);
+ if (ret)
+ return ret;
+ millivolt = *(u16 *)(row+offV);
+ milliamp = *(s16 *)(row+offI);
+ return sprintf(buf, "%d\n", milliamp*millivolt/1000); /* units: mW */
+}
+
+/**
+ * show_tp_ec_bat_date - decode and show a date from EC battery status data
+ * @arg0: specified 1st argument of EC raw to read
+ * @offset: byte offset in EC raw data
+ * @attr: battery attribute
+ * @buf: output buffer
+ */
+static ssize_t show_tp_ec_bat_date(u8 arg0, int offset,
+ struct device_attribute *attr, char *buf)
+{
+ u8 row[TP_CONTROLLER_ROW_LEN];
+ u16 v;
+ int ret;
+ int day, month, year;
+ int bat = attr_get_bat(attr);
+ if (bat_has_status(bat) != 1)
+ return -ENXIO;
+ ret = read_tp_ec_row(arg0, bat, 0, row);
+ if (ret)
+ return ret;
+
+ /* Decode bit-packed: v = day | (month<<5) | ((year-1980)<<9) */
+ v = *(u16 *)(row+offset);
+ day = v & 0x1F;
+ month = (v >> 5) & 0xF;
+ year = (v >> 9) + 1980;
+
+ return sprintf(buf, "%04d-%02d-%02d\n", year, month, day);
+}
+
+
+/*********************************************************************
+ * sysfs attribute I/O for batteries -
+ * the actual attribute show/store functions
+ */
+
+static ssize_t show_battery_start_charge_thresh(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int thresh;
+ int bat = attr_get_bat(attr);
+ int ret = get_thresh(bat, THRESH_START, &thresh);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%d\n", thresh); /* units: percent */
+}
+
+static ssize_t show_battery_stop_charge_thresh(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int thresh;
+ int bat = attr_get_bat(attr);
+ int ret = get_thresh(bat, THRESH_STOP, &thresh);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%d\n", thresh); /* units: percent */
+}
+
+/**
+ * store_battery_start_charge_thresh - store battery_start_charge_thresh attr
+ * Since this is a kernel<->user interface, we ensure a valid state for
+ * the hardware. We do this by clamping the requested threshold to the
+ * valid range and, if necessary, moving the other threshold so that
+ * it's MIN_THRESH_DELTA away from this one.
+ */
+static ssize_t store_battery_start_charge_thresh(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int thresh, other_thresh, ret;
+ int bat = attr_get_bat(attr);
+
+ if (sscanf(buf, "%d", &thresh) != 1 || thresh < 1 || thresh > 100)
+ return -EINVAL;
+
+ if (thresh < MIN_THRESH_START) /* clamp up to MIN_THRESH_START */
+ thresh = MIN_THRESH_START;
+ if (thresh > MAX_THRESH_START) /* clamp down to MAX_THRESH_START */
+ thresh = MAX_THRESH_START;
+
+ down(&smapi_mutex);
+ ret = get_thresh(bat, THRESH_STOP, &other_thresh);
+ if (ret != -EOPNOTSUPP && ret != -ENXIO) {
+ if (ret) /* other threshold is set? */
+ goto out;
+ ret = get_real_thresh(bat, THRESH_START, NULL);
+ if (ret) /* this threshold is set? */
+ goto out;
+ if (other_thresh < thresh+MIN_THRESH_DELTA) {
+ /* move other thresh to keep it above this one */
+ ret = set_thresh(bat, THRESH_STOP,
+ thresh+MIN_THRESH_DELTA);
+ if (ret)
+ goto out;
+ }
+ }
+ ret = set_thresh(bat, THRESH_START, thresh);
+out:
+ up(&smapi_mutex);
+ return count;
+
+}
+
+/**
+ * store_battery_stop_charge_thresh - store battery_stop_charge_thresh attr
+ * Since this is a kernel<->user interface, we ensure a valid state for
+ * the hardware. We do this by clamping the requested threshold to the
+ * valid range and, if necessary, moving the other threshold so that
+ * it's MIN_THRESH_DELTA away from this one.
+ */
+static ssize_t store_battery_stop_charge_thresh(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int thresh, other_thresh, ret;
+ int bat = attr_get_bat(attr);
+
+ if (sscanf(buf, "%d", &thresh) != 1 || thresh < 1 || thresh > 100)
+ return -EINVAL;
+
+ if (thresh < MIN_THRESH_STOP) /* clamp up to MIN_THRESH_STOP */
+ thresh = MIN_THRESH_STOP;
+
+ down(&smapi_mutex);
+ ret = get_thresh(bat, THRESH_START, &other_thresh);
+ if (ret != -EOPNOTSUPP && ret != -ENXIO) { /* other threshold exists? */
+ if (ret)
+ goto out;
+ /* this threshold exists? */
+ ret = get_real_thresh(bat, THRESH_STOP, NULL);
+ if (ret)
+ goto out;
+ if (other_thresh >= thresh-MIN_THRESH_DELTA) {
+ /* move other thresh to be below this one */
+ ret = set_thresh(bat, THRESH_START,
+ thresh-MIN_THRESH_DELTA);
+ if (ret)
+ goto out;
+ }
+ }
+ ret = set_thresh(bat, THRESH_STOP, thresh);
+out:
+ up(&smapi_mutex);
+ return count;
+}
+
+static ssize_t show_battery_inhibit_charge_minutes(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int minutes;
+ int bat = attr_get_bat(attr);
+ int ret = get_inhibit_charge_minutes(bat, &minutes);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%d\n", minutes); /* units: minutes */
+}
+
+static ssize_t store_battery_inhibit_charge_minutes(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int ret;
+ int minutes;
+ int bat = attr_get_bat(attr);
+ if (sscanf(buf, "%d", &minutes) != 1 || minutes < 0) {
+ TPRINTK(KERN_ERR, "inhibit_charge_minutes: "
+ "must be a non-negative integer");
+ return -EINVAL;
+ }
+ ret = set_inhibit_charge_minutes(bat, minutes);
+ if (ret)
+ return ret;
+ return count;
+}
+
+static ssize_t show_battery_force_discharge(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int enabled;
+ int bat = attr_get_bat(attr);
+ int ret = get_force_discharge(bat, &enabled);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%d\n", enabled); /* type: boolean */
+}
+
+static ssize_t store_battery_force_discharge(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int ret;
+ int enabled;
+ int bat = attr_get_bat(attr);
+ if (sscanf(buf, "%d", &enabled) != 1 || enabled < 0 || enabled > 1)
+ return -EINVAL;
+ ret = set_force_discharge(bat, enabled);
+ if (ret)
+ return ret;
+ return count;
+}
+
+static ssize_t show_battery_installed(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int bat = attr_get_bat(attr);
+ int ret = power_device_present(bat);
+ if (ret < 0)
+ return ret;
+ return sprintf(buf, "%d\n", ret); /* type: boolean */
+}
+
+static ssize_t show_battery_state(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ u8 row[TP_CONTROLLER_ROW_LEN];
+ const char *txt;
+ int ret;
+ int bat = attr_get_bat(attr);
+ if (bat_has_status(bat) != 1)
+ return sprintf(buf, "none\n");
+ ret = read_tp_ec_row(1, bat, 0, row);
+ if (ret)
+ return ret;
+ switch (row[1] & 0xf0) {
+ case 0xc0: txt = "idle"; break;
+ case 0xd0: txt = "discharging"; break;
+ case 0xe0: txt = "charging"; break;
+ default: return sprintf(buf, "unknown (0x%x)\n", row[1]);
+ }
+ return sprintf(buf, "%s\n", txt); /* type: string from fixed set */
+}
+
+static ssize_t show_battery_manufacturer(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* type: string. SBS spec v1.1 p34: ManufacturerName() */
+ return show_tp_ec_bat_str(4, 2, TP_CONTROLLER_ROW_LEN-2, attr, buf);
+}
+
+static ssize_t show_battery_model(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* type: string. SBS spec v1.1 p34: DeviceName() */
+ return show_tp_ec_bat_str(5, 2, TP_CONTROLLER_ROW_LEN-2, attr, buf);
+}
+
+static ssize_t show_battery_barcoding(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* type: string */
+ return show_tp_ec_bat_str(7, 2, TP_CONTROLLER_ROW_LEN-2, attr, buf);
+}
+
+static ssize_t show_battery_chemistry(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* type: string. SBS spec v1.1 p34-35: DeviceChemistry() */
+ return show_tp_ec_bat_str(6, 2, 5, attr, buf);
+}
+
+static ssize_t show_battery_voltage(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mV. SBS spec v1.1 p24: Voltage() */
+ return show_tp_ec_bat_u16(1, 6, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_design_voltage(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mV. SBS spec v1.1 p32: DesignVoltage() */
+ return show_tp_ec_bat_u16(3, 4, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_charging_max_voltage(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mV. SBS spec v1.1 p37,39: ChargingVoltage() */
+ return show_tp_ec_bat_u16(9, 8, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_group0_voltage(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mV */
+ return show_tp_ec_bat_u16(0xA, 12, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_group1_voltage(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mV */
+ return show_tp_ec_bat_u16(0xA, 10, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_group2_voltage(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mV */
+ return show_tp_ec_bat_u16(0xA, 8, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_group3_voltage(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mV */
+ return show_tp_ec_bat_u16(0xA, 6, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_current_now(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mA. SBS spec v1.1 p24: Current() */
+ return show_tp_ec_bat_s16(1, 8, 1, 0, attr, buf);
+}
+
+static ssize_t show_battery_current_avg(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mA. SBS spec v1.1 p24: AverageCurrent() */
+ return show_tp_ec_bat_s16(1, 10, 1, 0, attr, buf);
+}
+
+static ssize_t show_battery_charging_max_current(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mA. SBS spec v1.1 p36,38: ChargingCurrent() */
+ return show_tp_ec_bat_s16(9, 6, 1, 0, attr, buf);
+}
+
+static ssize_t show_battery_power_now(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mW. SBS spec v1.1: Voltage()*Current() */
+ return show_tp_ec_bat_power(1, 6, 8, attr, buf);
+}
+
+static ssize_t show_battery_power_avg(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mW. SBS spec v1.1: Voltage()*AverageCurrent() */
+ return show_tp_ec_bat_power(1, 6, 10, attr, buf);
+}
+
+static ssize_t show_battery_remaining_percent(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: percent. SBS spec v1.1 p25: RelativeStateOfCharge() */
+ return show_tp_ec_bat_u16(1, 12, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_remaining_percent_error(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: percent. SBS spec v1.1 p25: MaxError() */
+ return show_tp_ec_bat_u16(9, 4, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_remaining_charging_time(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: minutes. SBS spec v1.1 p27: AverageTimeToFull() */
+ return show_tp_ec_bat_u16(2, 8, 1, "not_charging", attr, buf);
+}
+
+static ssize_t show_battery_remaining_running_time(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: minutes. SBS spec v1.1 p27: RunTimeToEmpty() */
+ return show_tp_ec_bat_u16(2, 6, 1, "not_discharging", attr, buf);
+}
+
+static ssize_t show_battery_remaining_running_time_now(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: minutes. SBS spec v1.1 p27: RunTimeToEmpty() */
+ return show_tp_ec_bat_u16(2, 4, 1, "not_discharging", attr, buf);
+}
+
+static ssize_t show_battery_remaining_capacity(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mWh. SBS spec v1.1 p26. */
+ return show_tp_ec_bat_u16(1, 14, 10, "", attr, buf);
+}
+
+static ssize_t show_battery_last_full_capacity(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mWh. SBS spec v1.1 p26: FullChargeCapacity() */
+ return show_tp_ec_bat_u16(2, 2, 10, "", attr, buf);
+}
+
+static ssize_t show_battery_design_capacity(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mWh. SBS spec v1.1 p32: DesignCapacity() */
+ return show_tp_ec_bat_u16(3, 2, 10, "", attr, buf);
+}
+
+static ssize_t show_battery_cycle_count(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: ordinal. SBS spec v1.1 p32: CycleCount() */
+ return show_tp_ec_bat_u16(2, 12, 1, "", attr, buf);
+}
+
+static ssize_t show_battery_temperature(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: millicelsius. SBS spec v1.1: Temperature()*10 */
+ return show_tp_ec_bat_s16(1, 4, 100, -273100, attr, buf);
+}
+
+static ssize_t show_battery_serial(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* type: int. SBS spec v1.1 p34: SerialNumber() */
+ return show_tp_ec_bat_u16(3, 10, 1, "", attr, buf);
+}
+
+static ssize_t show_battery_manufacture_date(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* type: YYYY-MM-DD. SBS spec v1.1 p34: ManufactureDate() */
+ return show_tp_ec_bat_date(3, 8, attr, buf);
+}
+
+static ssize_t show_battery_first_use_date(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* type: YYYY-MM-DD */
+ return show_tp_ec_bat_date(8, 2, attr, buf);
+}
+
+/**
+ * show_battery_dump - show the battery's dump attribute
+ * The dump attribute gives a hex dump of all EC readouts related to a
+ * battery. Some of the enumerated values don't really exist (i.e., the
+ * EC function just leaves them untouched); we use a kludge to detect and
+ * denote these.
+ */
+#define MIN_DUMP_ARG0 0x00
+#define MAX_DUMP_ARG0 0x0a /* 0x0b is useful too but hangs old EC firmware */
+static ssize_t show_battery_dump(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int i;
+ char *p = buf;
+ int bat = attr_get_bat(attr);
+ u8 arg0; /* first argument to EC */
+ u8 rowa[TP_CONTROLLER_ROW_LEN],
+ rowb[TP_CONTROLLER_ROW_LEN];
+ const u8 junka = 0xAA,
+ junkb = 0x55; /* junk values for testing changes */
+ int ret;
+
+ for (arg0 = MIN_DUMP_ARG0; arg0 <= MAX_DUMP_ARG0; ++arg0) {
+ if ((p-buf) > PAGE_SIZE-TP_CONTROLLER_ROW_LEN*5)
+ return -ENOMEM; /* don't overflow sysfs buf */
+ /* Read raw twice with different junk values,
+ * to detect unused output bytes which are left unchaged: */
+ ret = read_tp_ec_row(arg0, bat, junka, rowa);
+ if (ret)
+ return ret;
+ ret = read_tp_ec_row(arg0, bat, junkb, rowb);
+ if (ret)
+ return ret;
+ for (i = 0; i < TP_CONTROLLER_ROW_LEN; i++) {
+ if (rowa[i] == junka && rowb[i] == junkb)
+ p += sprintf(p, "-- "); /* unused by EC */
+ else
+ p += sprintf(p, "%02x ", rowa[i]);
+ }
+ p += sprintf(p, "\n");
+ }
+ return p-buf;
+}
+
+
+/*********************************************************************
+ * sysfs attribute I/O, other than batteries
+ */
+
+static ssize_t show_ac_connected(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int ret = power_device_present(0xFF);
+ if (ret < 0)
+ return ret;
+ return sprintf(buf, "%d\n", ret); /* type: boolean */
+}
+
+/*********************************************************************
+ * The the "smapi_request" sysfs attribute executes a raw SMAPI call.
+ * You write to make a request and read to get the result. The state
+ * is saved globally rather than per fd (sysfs limitation), so
+ * simultaenous requests may get each other's results! So this is for
+ * development and debugging only.
+ */
+#define MAX_SMAPI_ATTR_ANSWER_LEN 128
+static char smapi_attr_answer[MAX_SMAPI_ATTR_ANSWER_LEN] = "";
+
+static ssize_t show_smapi_request(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int ret = snprintf(buf, PAGE_SIZE, "%s", smapi_attr_answer);
+ smapi_attr_answer[0] = '\0';
+ return ret;
+}
+
+static ssize_t store_smapi_request(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned int inEBX, inECX, inEDI, inESI;
+ u32 outEBX, outECX, outEDX, outEDI, outESI;
+ const char *msg;
+ int ret;
+ if (sscanf(buf, "%x %x %x %x", &inEBX, &inECX, &inEDI, &inESI) != 4) {
+ smapi_attr_answer[0] = '\0';
+ return -EINVAL;
+ }
+ ret = smapi_request(
+ inEBX, inECX, inEDI, inESI,
+ &outEBX, &outECX, &outEDX, &outEDI, &outESI, &msg);
+ snprintf(smapi_attr_answer, MAX_SMAPI_ATTR_ANSWER_LEN,
+ "%x %x %x %x %x %d '%s'\n",
+ (unsigned int)outEBX, (unsigned int)outECX,
+ (unsigned int)outEDX, (unsigned int)outEDI,
+ (unsigned int)outESI, ret, msg);
+ if (ret)
+ return ret;
+ else
+ return count;
+}
+
+/*********************************************************************
+ * Power management: the embedded controller forgets the battery
+ * thresholds when the system is suspended to disk and unplugged from
+ * AC and battery, so we restore it upon resume.
+ */
+
+static int saved_threshs[4] = {-1, -1, -1, -1}; /* -1 = don't know */
+
+static int tp_suspend(struct platform_device *dev, pm_message_t state)
+{
+ int restore = (state.event == PM_EVENT_HIBERNATE ||
+ state.event == PM_EVENT_FREEZE);
+ if (!restore || get_real_thresh(0, THRESH_STOP , &saved_threshs[0]))
+ saved_threshs[0] = -1;
+ if (!restore || get_real_thresh(0, THRESH_START, &saved_threshs[1]))
+ saved_threshs[1] = -1;
+ if (!restore || get_real_thresh(1, THRESH_STOP , &saved_threshs[2]))
+ saved_threshs[2] = -1;
+ if (!restore || get_real_thresh(1, THRESH_START, &saved_threshs[3]))
+ saved_threshs[3] = -1;
+ DPRINTK("suspend saved: %d %d %d %d", saved_threshs[0],
+ saved_threshs[1], saved_threshs[2], saved_threshs[3]);
+ return 0;
+}
+
+static int tp_resume(struct platform_device *dev)
+{
+ DPRINTK("resume restoring: %d %d %d %d", saved_threshs[0],
+ saved_threshs[1], saved_threshs[2], saved_threshs[3]);
+ if (saved_threshs[0] >= 0)
+ set_real_thresh(0, THRESH_STOP , saved_threshs[0]);
+ if (saved_threshs[1] >= 0)
+ set_real_thresh(0, THRESH_START, saved_threshs[1]);
+ if (saved_threshs[2] >= 0)
+ set_real_thresh(1, THRESH_STOP , saved_threshs[2]);
+ if (saved_threshs[3] >= 0)
+ set_real_thresh(1, THRESH_START, saved_threshs[3]);
+ return 0;
+}
+
+
+/*********************************************************************
+ * Driver model
+ */
+
+static struct platform_driver tp_driver = {
+ .suspend = tp_suspend,
+ .resume = tp_resume,
+ .driver = {
+ .name = "smapi",
+ .owner = THIS_MODULE
+ },
+};
+
+
+/*********************************************************************
+ * Sysfs device model
+ */
+
+/* Attributes in /sys/devices/platform/smapi/ */
+
+static DEVICE_ATTR(ac_connected, 0444, show_ac_connected, NULL);
+static DEVICE_ATTR(smapi_request, 0600, show_smapi_request,
+ store_smapi_request);
+
+static struct attribute *tp_root_attributes[] = {
+ &dev_attr_ac_connected.attr,
+ &dev_attr_smapi_request.attr,
+ NULL
+};
+static struct attribute_group tp_root_attribute_group = {
+ .attrs = tp_root_attributes
+};
+
+/* Attributes under /sys/devices/platform/smapi/BAT{0,1}/ :
+ * Every attribute needs to be defined (i.e., statically allocated) for
+ * each battery, and then referenced in the attribute list of each battery.
+ * We use preprocessor voodoo to avoid duplicating the list of attributes 4
+ * times. The preprocessor output is just normal sysfs attributes code.
+ */
+
+/**
+ * FOREACH_BAT_ATTR - invoke the given macros on all our battery attributes
+ * @_BAT: battery number (0 or 1)
+ * @_ATTR_RW: macro to invoke for each read/write attribute
+ * @_ATTR_R: macro to invoke for each read-only attribute
+ */
+#define FOREACH_BAT_ATTR(_BAT, _ATTR_RW, _ATTR_R) \
+ _ATTR_RW(_BAT, start_charge_thresh) \
+ _ATTR_RW(_BAT, stop_charge_thresh) \
+ _ATTR_RW(_BAT, inhibit_charge_minutes) \
+ _ATTR_RW(_BAT, force_discharge) \
+ _ATTR_R(_BAT, installed) \
+ _ATTR_R(_BAT, state) \
+ _ATTR_R(_BAT, manufacturer) \
+ _ATTR_R(_BAT, model) \
+ _ATTR_R(_BAT, barcoding) \
+ _ATTR_R(_BAT, chemistry) \
+ _ATTR_R(_BAT, voltage) \
+ _ATTR_R(_BAT, group0_voltage) \
+ _ATTR_R(_BAT, group1_voltage) \
+ _ATTR_R(_BAT, group2_voltage) \
+ _ATTR_R(_BAT, group3_voltage) \
+ _ATTR_R(_BAT, current_now) \
+ _ATTR_R(_BAT, current_avg) \
+ _ATTR_R(_BAT, charging_max_current) \
+ _ATTR_R(_BAT, power_now) \
+ _ATTR_R(_BAT, power_avg) \
+ _ATTR_R(_BAT, remaining_percent) \
+ _ATTR_R(_BAT, remaining_percent_error) \
+ _ATTR_R(_BAT, remaining_charging_time) \
+ _ATTR_R(_BAT, remaining_running_time) \
+ _ATTR_R(_BAT, remaining_running_time_now) \
+ _ATTR_R(_BAT, remaining_capacity) \
+ _ATTR_R(_BAT, last_full_capacity) \
+ _ATTR_R(_BAT, design_voltage) \
+ _ATTR_R(_BAT, charging_max_voltage) \
+ _ATTR_R(_BAT, design_capacity) \
+ _ATTR_R(_BAT, cycle_count) \
+ _ATTR_R(_BAT, temperature) \
+ _ATTR_R(_BAT, serial) \
+ _ATTR_R(_BAT, manufacture_date) \
+ _ATTR_R(_BAT, first_use_date) \
+ _ATTR_R(_BAT, dump)
+
+/* Define several macros we will feed into FOREACH_BAT_ATTR: */
+
+#define DEFINE_BAT_ATTR_RW(_BAT,_NAME) \
+ static struct bat_device_attribute dev_attr_##_NAME##_##_BAT = { \
+ .dev_attr = __ATTR(_NAME, 0644, show_battery_##_NAME, \
+ store_battery_##_NAME), \
+ .bat = _BAT \
+ };
+
+#define DEFINE_BAT_ATTR_R(_BAT,_NAME) \
+ static struct bat_device_attribute dev_attr_##_NAME##_##_BAT = { \
+ .dev_attr = __ATTR(_NAME, 0644, show_battery_##_NAME, 0), \
+ .bat = _BAT \
+ };
+
+#define REF_BAT_ATTR(_BAT,_NAME) \
+ &dev_attr_##_NAME##_##_BAT.dev_attr.attr,
+
+/* This provide all attributes for one battery: */
+
+#define PROVIDE_BAT_ATTRS(_BAT) \
+ FOREACH_BAT_ATTR(_BAT, DEFINE_BAT_ATTR_RW, DEFINE_BAT_ATTR_R) \
+ static struct attribute *tp_bat##_BAT##_attributes[] = { \
+ FOREACH_BAT_ATTR(_BAT, REF_BAT_ATTR, REF_BAT_ATTR) \
+ NULL \
+ }; \
+ static struct attribute_group tp_bat##_BAT##_attribute_group = { \
+ .name = "BAT" #_BAT, \
+ .attrs = tp_bat##_BAT##_attributes \
+ };
+
+/* Finally genereate the attributes: */
+
+PROVIDE_BAT_ATTRS(0)
+PROVIDE_BAT_ATTRS(1)
+
+/* List of attribute groups */
+
+static struct attribute_group *attr_groups[] = {
+ &tp_root_attribute_group,
+ &tp_bat0_attribute_group,
+ &tp_bat1_attribute_group,
+ NULL
+};
+
+
+/*********************************************************************
+ * Init and cleanup
+ */
+
+static struct attribute_group **next_attr_group; /* next to register */
+
+static int __init tp_init(void)
+{
+ int ret;
+ printk(KERN_INFO "tp_smapi " TP_VERSION " loading...\n");
+
+ ret = find_smapi_port();
+ if (ret < 0)
+ goto err;
+ else
+ smapi_port = ret;
+
+ if (!request_region(smapi_port, 1, "smapi")) {
+ printk(KERN_ERR "tp_smapi cannot claim port 0x%x\n",
+ smapi_port);
+ ret = -ENXIO;
+ goto err;
+ }
+
+ if (!request_region(SMAPI_PORT2, 1, "smapi")) {
+ printk(KERN_ERR "tp_smapi cannot claim port 0x%x\n",
+ SMAPI_PORT2);
+ ret = -ENXIO;
+ goto err_port1;
+ }
+
+ ret = platform_driver_register(&tp_driver);
+ if (ret)
+ goto err_port2;
+
+ pdev = platform_device_alloc("smapi", -1);
+ if (!pdev) {
+ ret = -ENOMEM;
+ goto err_driver;
+ }
+
+ ret = platform_device_add(pdev);
+ if (ret)
+ goto err_device_free;
+
+ for (next_attr_group = attr_groups; *next_attr_group;
+ ++next_attr_group) {
+ ret = sysfs_create_group(&pdev->dev.kobj, *next_attr_group);
+ if (ret)
+ goto err_attr;
+ }
+
+ printk(KERN_INFO "tp_smapi successfully loaded (smapi_port=0x%x).\n",
+ smapi_port);
+ return 0;
+
+err_attr:
+ while (--next_attr_group >= attr_groups)
+ sysfs_remove_group(&pdev->dev.kobj, *next_attr_group);
+ platform_device_unregister(pdev);
+err_device_free:
+ platform_device_put(pdev);
+err_driver:
+ platform_driver_unregister(&tp_driver);
+err_port2:
+ release_region(SMAPI_PORT2, 1);
+err_port1:
+ release_region(smapi_port, 1);
+err:
+ printk(KERN_ERR "tp_smapi init failed (ret=%d)!\n", ret);
+ return ret;
+}
+
+static void __exit tp_exit(void)
+{
+ while (next_attr_group && --next_attr_group >= attr_groups)
+ sysfs_remove_group(&pdev->dev.kobj, *next_attr_group);
+ platform_device_unregister(pdev);
+ platform_driver_unregister(&tp_driver);
+ release_region(SMAPI_PORT2, 1);
+ if (smapi_port)
+ release_region(smapi_port, 1);
+
+ printk(KERN_INFO "tp_smapi unloaded.\n");
+}
+
+module_init(tp_init);
+module_exit(tp_exit);
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index ff0350ca3b..78b6fa270c 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -2,3 +2,4 @@
source "drivers/power/avs/Kconfig"
source "drivers/power/reset/Kconfig"
source "drivers/power/supply/Kconfig"
+source "drivers/power/pwrseq/Kconfig"
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index b7c2e37218..13046c7fb4 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -2,3 +2,4 @@
obj-$(CONFIG_POWER_AVS) += avs/
obj-$(CONFIG_POWER_RESET) += reset/
obj-$(CONFIG_POWER_SUPPLY) += supply/
+obj-$(CONFIG_POWER_SEQUENCE) += pwrseq/
diff --git a/drivers/power/pwrseq/Kconfig b/drivers/power/pwrseq/Kconfig
new file mode 100644
index 0000000000..c6b356926c
--- /dev/null
+++ b/drivers/power/pwrseq/Kconfig
@@ -0,0 +1,20 @@
+#
+# Power Sequence library
+#
+
+menuconfig POWER_SEQUENCE
+ bool "Power sequence control"
+ help
+ It is used for drivers which needs to do power sequence
+ (eg, turn on clock, toggle reset gpio) before the related
+ devices can be found by hardware, eg, USB bus.
+
+if POWER_SEQUENCE
+
+config PWRSEQ_GENERIC
+ bool "Generic power sequence control"
+ depends on OF
+ help
+ This is the generic power sequence control library, and is
+ supposed to support common power sequence usage.
+endif
diff --git a/drivers/power/pwrseq/Makefile b/drivers/power/pwrseq/Makefile
new file mode 100644
index 0000000000..ad82389028
--- /dev/null
+++ b/drivers/power/pwrseq/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_POWER_SEQUENCE) += core.o
+obj-$(CONFIG_PWRSEQ_GENERIC) += pwrseq_generic.o
diff --git a/drivers/power/pwrseq/core.c b/drivers/power/pwrseq/core.c
new file mode 100644
index 0000000000..3d19e62a2e
--- /dev/null
+++ b/drivers/power/pwrseq/core.c
@@ -0,0 +1,335 @@
+/*
+ * core.c power sequence core file
+ *
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ * Author: Peter Chen <peter.chen@nxp.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 of
+ * the License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.
+ */
+
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+#include <linux/power/pwrseq.h>
+
+static DEFINE_MUTEX(pwrseq_list_mutex);
+static LIST_HEAD(pwrseq_list);
+
+static int pwrseq_get(struct device_node *np, struct pwrseq *p)
+{
+ if (p && p->get)
+ return p->get(np, p);
+
+ return -ENOTSUPP;
+}
+
+static int pwrseq_on(struct pwrseq *p)
+{
+ if (p && p->on)
+ return p->on(p);
+
+ return -ENOTSUPP;
+}
+
+static void pwrseq_off(struct pwrseq *p)
+{
+ if (p && p->off)
+ p->off(p);
+}
+
+static void pwrseq_put(struct pwrseq *p)
+{
+ if (p && p->put)
+ p->put(p);
+}
+
+/**
+ * pwrseq_register - Add pwrseq instance to global pwrseq list
+ *
+ * @pwrseq: the pwrseq instance
+ */
+void pwrseq_register(struct pwrseq *pwrseq)
+{
+ mutex_lock(&pwrseq_list_mutex);
+ list_add(&pwrseq->node, &pwrseq_list);
+ mutex_unlock(&pwrseq_list_mutex);
+}
+EXPORT_SYMBOL_GPL(pwrseq_register);
+
+/**
+ * pwrseq_unregister - Remove pwrseq instance from global pwrseq list
+ *
+ * @pwrseq: the pwrseq instance
+ */
+void pwrseq_unregister(struct pwrseq *pwrseq)
+{
+ mutex_lock(&pwrseq_list_mutex);
+ list_del(&pwrseq->node);
+ mutex_unlock(&pwrseq_list_mutex);
+}
+EXPORT_SYMBOL_GPL(pwrseq_unregister);
+
+static struct pwrseq *pwrseq_find_available_instance(struct device_node *np)
+{
+ struct pwrseq *pwrseq;
+
+ mutex_lock(&pwrseq_list_mutex);
+ list_for_each_entry(pwrseq, &pwrseq_list, node) {
+ if (pwrseq->used)
+ continue;
+
+ /* compare compatible string for pwrseq node */
+ if (of_match_node(pwrseq->pwrseq_of_match_table, np)) {
+ pwrseq->used = true;
+ mutex_unlock(&pwrseq_list_mutex);
+ return pwrseq;
+ }
+
+ /* return generic pwrseq instance */
+ if (!strcmp(pwrseq->pwrseq_of_match_table->compatible,
+ "generic")) {
+ pr_debug("using generic pwrseq instance for %s\n",
+ np->full_name);
+ pwrseq->used = true;
+ mutex_unlock(&pwrseq_list_mutex);
+ return pwrseq;
+ }
+ }
+ mutex_unlock(&pwrseq_list_mutex);
+ pr_debug("Can't find any pwrseq instances for %s\n", np->full_name);
+
+ return NULL;
+}
+
+/**
+ * of_pwrseq_on - Carry out power sequence on for device node
+ *
+ * @np: the device node would like to power on
+ *
+ * Carry out a single device power on. If multiple devices
+ * need to be handled, use of_pwrseq_on_list() instead.
+ *
+ * Return a pointer to the power sequence instance on success,
+ * or an error code otherwise.
+ */
+struct pwrseq *of_pwrseq_on(struct device_node *np)
+{
+ struct pwrseq *pwrseq;
+ int ret;
+
+ pwrseq = pwrseq_find_available_instance(np);
+ if (!pwrseq)
+ return ERR_PTR(-ENOENT);
+
+ ret = pwrseq_get(np, pwrseq);
+ if (ret) {
+ /* Mark current pwrseq as unused */
+ pwrseq->used = false;
+ return ERR_PTR(ret);
+ }
+
+ ret = pwrseq_on(pwrseq);
+ if (ret)
+ goto pwr_put;
+
+ return pwrseq;
+
+pwr_put:
+ pwrseq_put(pwrseq);
+ return ERR_PTR(ret);
+}
+EXPORT_SYMBOL_GPL(of_pwrseq_on);
+
+/**
+ * of_pwrseq_off - Carry out power sequence off for this pwrseq instance
+ *
+ * @pwrseq: the pwrseq instance which related device would like to be off
+ *
+ * This API is used to power off single device, it is the opposite
+ * operation for of_pwrseq_on.
+ */
+void of_pwrseq_off(struct pwrseq *pwrseq)
+{
+ pwrseq_off(pwrseq);
+ pwrseq_put(pwrseq);
+}
+EXPORT_SYMBOL_GPL(of_pwrseq_off);
+
+/**
+ * of_pwrseq_on_list - Carry out power sequence on for list
+ *
+ * @np: the device node would like to power on
+ * @head: the list head for pwrseq list on this bus
+ *
+ * This API is used to power on multiple devices at single bus.
+ * If there are several devices on bus (eg, USB bus), uses this
+ * this API. Otherwise, use of_pwrseq_on instead. After the device
+ * is powered on successfully, it will be added to pwrseq list for
+ * this bus. The caller needs to use mutex_lock for concurrent.
+ *
+ * Return 0 on success, or an error value otherwise.
+ */
+int of_pwrseq_on_list(struct device_node *np, struct list_head *head)
+{
+ struct pwrseq *pwrseq;
+ struct pwrseq_list_per_dev *pwrseq_list_node;
+
+ pwrseq_list_node = kzalloc(sizeof(*pwrseq_list_node), GFP_KERNEL);
+ if (!pwrseq_list_node)
+ return -ENOMEM;
+
+ pwrseq = of_pwrseq_on(np);
+ if (IS_ERR(pwrseq)) {
+ kfree(pwrseq_list_node);
+ return PTR_ERR(pwrseq);
+ }
+
+ pwrseq_list_node->pwrseq = pwrseq;
+ list_add(&pwrseq_list_node->list, head);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(of_pwrseq_on_list);
+
+/**
+ * of_pwrseq_off_list - Carry out power sequence off for the list
+ *
+ * @head: the list head for pwrseq instance list on this bus
+ *
+ * This API is used to power off all devices on this bus, it is
+ * the opposite operation for of_pwrseq_on_list.
+ * The caller needs to use mutex_lock for concurrent.
+ */
+void of_pwrseq_off_list(struct list_head *head)
+{
+ struct pwrseq *pwrseq;
+ struct pwrseq_list_per_dev *pwrseq_list_node, *tmp_node;
+
+ list_for_each_entry_safe(pwrseq_list_node, tmp_node, head, list) {
+ pwrseq = pwrseq_list_node->pwrseq;
+ of_pwrseq_off(pwrseq);
+ list_del(&pwrseq_list_node->list);
+ kfree(pwrseq_list_node);
+ }
+}
+EXPORT_SYMBOL_GPL(of_pwrseq_off_list);
+
+/**
+ * pwrseq_suspend - Carry out power sequence suspend for this pwrseq instance
+ *
+ * @pwrseq: the pwrseq instance
+ *
+ * This API is used to do suspend operation on pwrseq instance.
+ *
+ * Return 0 on success, or an error value otherwise.
+ */
+int pwrseq_suspend(struct pwrseq *p)
+{
+ int ret = 0;
+
+ if (p && p->suspend)
+ ret = p->suspend(p);
+ else
+ return ret;
+
+ if (!ret)
+ p->suspended = true;
+ else
+ pr_err("%s failed\n", __func__);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(pwrseq_suspend);
+
+/**
+ * pwrseq_resume - Carry out power sequence resume for this pwrseq instance
+ *
+ * @pwrseq: the pwrseq instance
+ *
+ * This API is used to do resume operation on pwrseq instance.
+ *
+ * Return 0 on success, or an error value otherwise.
+ */
+int pwrseq_resume(struct pwrseq *p)
+{
+ int ret = 0;
+
+ if (p && p->resume)
+ ret = p->resume(p);
+ else
+ return ret;
+
+ if (!ret)
+ p->suspended = false;
+ else
+ pr_err("%s failed\n", __func__);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(pwrseq_resume);
+
+/**
+ * pwrseq_suspend_list - Carry out power sequence suspend for list
+ *
+ * @head: the list head for pwrseq instance list on this bus
+ *
+ * This API is used to do suspend on all power sequence instances on this bus.
+ * The caller needs to use mutex_lock for concurrent.
+ */
+int pwrseq_suspend_list(struct list_head *head)
+{
+ struct pwrseq *pwrseq;
+ struct pwrseq_list_per_dev *pwrseq_list_node;
+ int ret = 0;
+
+ list_for_each_entry(pwrseq_list_node, head, list) {
+ ret = pwrseq_suspend(pwrseq_list_node->pwrseq);
+ if (ret)
+ break;
+ }
+
+ if (ret) {
+ list_for_each_entry(pwrseq_list_node, head, list) {
+ pwrseq = pwrseq_list_node->pwrseq;
+ if (pwrseq->suspended)
+ pwrseq_resume(pwrseq);
+ }
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(pwrseq_suspend_list);
+
+/**
+ * pwrseq_resume_list - Carry out power sequence resume for the list
+ *
+ * @head: the list head for pwrseq instance list on this bus
+ *
+ * This API is used to do resume on all power sequence instances on this bus.
+ * The caller needs to use mutex_lock for concurrent.
+ */
+int pwrseq_resume_list(struct list_head *head)
+{
+ struct pwrseq_list_per_dev *pwrseq_list_node;
+ int ret = 0;
+
+ list_for_each_entry(pwrseq_list_node, head, list) {
+ ret = pwrseq_resume(pwrseq_list_node->pwrseq);
+ if (ret)
+ break;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(pwrseq_resume_list);
diff --git a/drivers/power/pwrseq/pwrseq_generic.c b/drivers/power/pwrseq/pwrseq_generic.c
new file mode 100644
index 0000000000..4e7c09086c
--- /dev/null
+++ b/drivers/power/pwrseq/pwrseq_generic.c
@@ -0,0 +1,234 @@
+/*
+ * pwrseq_generic.c Generic power sequence handling
+ *
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ * Author: Peter Chen <peter.chen@nxp.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 of
+ * the License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/slab.h>
+
+#include <linux/power/pwrseq.h>
+
+struct pwrseq_generic {
+ struct pwrseq pwrseq;
+ struct gpio_desc *gpiod_reset;
+ struct clk *clks[PWRSEQ_MAX_CLKS];
+ u32 duration_us;
+ bool suspended;
+};
+
+#define to_generic_pwrseq(p) container_of(p, struct pwrseq_generic, pwrseq)
+
+static int pwrseq_generic_alloc_instance(void);
+static const struct of_device_id generic_id_table[] = {
+ { .compatible = "generic",},
+ { /* sentinel */ }
+};
+
+static int pwrseq_generic_suspend(struct pwrseq *pwrseq)
+{
+ struct pwrseq_generic *pwrseq_gen = to_generic_pwrseq(pwrseq);
+ int clk;
+
+ for (clk = PWRSEQ_MAX_CLKS - 1; clk >= 0; clk--)
+ clk_disable_unprepare(pwrseq_gen->clks[clk]);
+
+ pwrseq_gen->suspended = true;
+ return 0;
+}
+
+static int pwrseq_generic_resume(struct pwrseq *pwrseq)
+{
+ struct pwrseq_generic *pwrseq_gen = to_generic_pwrseq(pwrseq);
+ int clk, ret = 0;
+
+ for (clk = 0; clk < PWRSEQ_MAX_CLKS && pwrseq_gen->clks[clk]; clk++) {
+ ret = clk_prepare_enable(pwrseq_gen->clks[clk]);
+ if (ret) {
+ pr_err("Can't enable clock, ret=%d\n", ret);
+ goto err_disable_clks;
+ }
+ }
+
+ pwrseq_gen->suspended = false;
+ return ret;
+
+err_disable_clks:
+ while (--clk >= 0)
+ clk_disable_unprepare(pwrseq_gen->clks[clk]);
+
+ return ret;
+}
+
+static void pwrseq_generic_put(struct pwrseq *pwrseq)
+{
+ struct pwrseq_generic *pwrseq_gen = to_generic_pwrseq(pwrseq);
+ int clk;
+
+ if (pwrseq_gen->gpiod_reset)
+ gpiod_put(pwrseq_gen->gpiod_reset);
+
+ for (clk = 0; clk < PWRSEQ_MAX_CLKS; clk++)
+ clk_put(pwrseq_gen->clks[clk]);
+
+ pwrseq_unregister(&pwrseq_gen->pwrseq);
+ kfree(pwrseq_gen);
+}
+
+static void pwrseq_generic_off(struct pwrseq *pwrseq)
+{
+ struct pwrseq_generic *pwrseq_gen = to_generic_pwrseq(pwrseq);
+ int clk;
+
+ if (pwrseq_gen->suspended)
+ return;
+
+ for (clk = PWRSEQ_MAX_CLKS - 1; clk >= 0; clk--)
+ clk_disable_unprepare(pwrseq_gen->clks[clk]);
+}
+
+static int pwrseq_generic_on(struct pwrseq *pwrseq)
+{
+ struct pwrseq_generic *pwrseq_gen = to_generic_pwrseq(pwrseq);
+ int clk, ret = 0;
+ struct gpio_desc *gpiod_reset = pwrseq_gen->gpiod_reset;
+
+ for (clk = 0; clk < PWRSEQ_MAX_CLKS && pwrseq_gen->clks[clk]; clk++) {
+ ret = clk_prepare_enable(pwrseq_gen->clks[clk]);
+ if (ret) {
+ pr_err("Can't enable clock, ret=%d\n", ret);
+ goto err_disable_clks;
+ }
+ }
+
+ if (gpiod_reset) {
+ u32 duration_us = pwrseq_gen->duration_us;
+
+ if (duration_us <= 10)
+ udelay(10);
+ else
+ usleep_range(duration_us, duration_us + 100);
+ gpiod_set_value(gpiod_reset, 0);
+ }
+
+ return ret;
+
+err_disable_clks:
+ while (--clk >= 0)
+ clk_disable_unprepare(pwrseq_gen->clks[clk]);
+
+ return ret;
+}
+
+static int pwrseq_generic_get(struct device_node *np, struct pwrseq *pwrseq)
+{
+ struct pwrseq_generic *pwrseq_gen = to_generic_pwrseq(pwrseq);
+ enum of_gpio_flags flags;
+ int reset_gpio, clk, ret = 0;
+
+ for (clk = 0; clk < PWRSEQ_MAX_CLKS; clk++) {
+ pwrseq_gen->clks[clk] = of_clk_get(np, clk);
+ if (IS_ERR(pwrseq_gen->clks[clk])) {
+ ret = PTR_ERR(pwrseq_gen->clks[clk]);
+ if (ret != -ENOENT)
+ goto err_put_clks;
+ pwrseq_gen->clks[clk] = NULL;
+ break;
+ }
+ }
+
+ reset_gpio = of_get_named_gpio_flags(np, "reset-gpios", 0, &flags);
+ if (gpio_is_valid(reset_gpio)) {
+ unsigned long gpio_flags;
+
+ if (flags & OF_GPIO_ACTIVE_LOW)
+ gpio_flags = GPIOF_ACTIVE_LOW | GPIOF_OUT_INIT_LOW;
+ else
+ gpio_flags = GPIOF_OUT_INIT_HIGH;
+
+ ret = gpio_request_one(reset_gpio, gpio_flags,
+ "pwrseq-reset-gpios");
+ if (ret)
+ goto err_put_clks;
+
+ pwrseq_gen->gpiod_reset = gpio_to_desc(reset_gpio);
+ of_property_read_u32(np, "reset-duration-us",
+ &pwrseq_gen->duration_us);
+ } else if (reset_gpio == -ENOENT) {
+ ; /* no such gpio */
+ } else {
+ ret = reset_gpio;
+ pr_err("Failed to get reset gpio on %s, err = %d\n",
+ np->full_name, reset_gpio);
+ goto err_put_clks;
+ }
+
+ /* allocate new one for later pwrseq instance request */
+ ret = pwrseq_generic_alloc_instance();
+ if (ret)
+ goto err_put_gpio;
+
+ return 0;
+
+err_put_gpio:
+ if (pwrseq_gen->gpiod_reset)
+ gpiod_put(pwrseq_gen->gpiod_reset);
+err_put_clks:
+ while (--clk >= 0)
+ clk_put(pwrseq_gen->clks[clk]);
+ return ret;
+}
+
+/**
+ * pwrseq_generic_alloc_instance - power sequence instance allocation
+ *
+ * This function is used to allocate one generic power sequence instance,
+ * it is called when the system boots up and after one power sequence
+ * instance is got successfully.
+ *
+ * Return zero on success or an error code otherwise.
+ */
+static int pwrseq_generic_alloc_instance(void)
+{
+ struct pwrseq_generic *pwrseq_gen;
+
+ pwrseq_gen = kzalloc(sizeof(*pwrseq_gen), GFP_KERNEL);
+ if (!pwrseq_gen)
+ return -ENOMEM;
+
+ pwrseq_gen->pwrseq.pwrseq_of_match_table = generic_id_table;
+ pwrseq_gen->pwrseq.get = pwrseq_generic_get;
+ pwrseq_gen->pwrseq.on = pwrseq_generic_on;
+ pwrseq_gen->pwrseq.off = pwrseq_generic_off;
+ pwrseq_gen->pwrseq.put = pwrseq_generic_put;
+ pwrseq_gen->pwrseq.suspend = pwrseq_generic_suspend;
+ pwrseq_gen->pwrseq.resume = pwrseq_generic_resume;
+
+ pwrseq_register(&pwrseq_gen->pwrseq);
+ return 0;
+}
+
+/* Allocate one pwrseq instance during boots up */
+static int __init pwrseq_generic_register(void)
+{
+ return pwrseq_generic_alloc_instance();
+}
+postcore_initcall(pwrseq_generic_register)
diff --git a/drivers/pwm/sysfs.c b/drivers/pwm/sysfs.c
index 2389b86698..50325699c1 100644
--- a/drivers/pwm/sysfs.c
+++ b/drivers/pwm/sysfs.c
@@ -14,6 +14,8 @@
#include <linux/kdev_t.h>
#include <linux/pwm.h>
+static struct class pwm_class;
+
struct pwm_export {
struct device child;
struct pwm_device *pwm;
@@ -231,6 +233,10 @@ static struct attribute *pwm_attrs[] = {
};
ATTRIBUTE_GROUPS(pwm);
+static const struct device_type pwm_channel_type = {
+ .name = "pwm_channel",
+};
+
static void pwm_export_release(struct device *child)
{
struct pwm_export *export = child_to_pwm_export(child);
@@ -240,6 +246,7 @@ static void pwm_export_release(struct device *child)
static int pwm_export_child(struct device *parent, struct pwm_device *pwm)
{
+ struct pwm_chip *chip = dev_get_drvdata(parent);
struct pwm_export *export;
char *pwm_prop[2];
int ret;
@@ -258,9 +265,11 @@ static int pwm_export_child(struct device *parent, struct pwm_device *pwm)
export->child.release = pwm_export_release;
export->child.parent = parent;
+ export->child.type = &pwm_channel_type;
export->child.devt = MKDEV(0, 0);
+ export->child.class = &pwm_class;
export->child.groups = pwm_groups;
- dev_set_name(&export->child, "pwm%u", pwm->hwpwm);
+ dev_set_name(&export->child, "pwm-%d:%u", chip->base, pwm->hwpwm);
ret = device_register(&export->child);
if (ret) {
@@ -476,7 +485,6 @@ static SIMPLE_DEV_PM_OPS(pwm_class_pm_ops, pwm_class_suspend, pwm_class_resume);
static struct class pwm_class = {
.name = "pwm",
.owner = THIS_MODULE,
- .dev_groups = pwm_chip_groups,
.pm = &pwm_class_pm_ops,
};
@@ -493,7 +501,8 @@ void pwmchip_sysfs_export(struct pwm_chip *chip)
* If device_create() fails the pwm_chip is still usable by
* the kernel it's just not exported.
*/
- parent = device_create(&pwm_class, chip->dev, MKDEV(0, 0), chip,
+ parent = device_create_with_groups(&pwm_class, chip->dev, MKDEV(0, 0),
+ chip, pwm_chip_groups,
"pwmchip%d", chip->base);
if (IS_ERR(parent)) {
dev_warn(chip->dev,
diff --git a/drivers/regulator/twl6030-regulator.c b/drivers/regulator/twl6030-regulator.c
index 5fe208b381..472ce342d7 100644
--- a/drivers/regulator/twl6030-regulator.c
+++ b/drivers/regulator/twl6030-regulator.c
@@ -289,6 +289,13 @@ static const struct regulator_ops twl6030fixed_ops = {
.get_status = twl6030reg_get_status,
};
+static struct regulator_ops twl6030_fixed_resource = {
+ .enable = twl6030reg_enable,
+ .disable = twl6030reg_disable,
+ .is_enabled = twl6030reg_is_enabled,
+ .get_status = twl6030reg_get_status,
+};
+
/*
* SMPS status and control
*/
@@ -562,6 +569,19 @@ static const struct twlreg_info TWLSMPS_INFO_##label = { \
}, \
}
+#define TWL6030_FIXED_RESOURCE(label, offset, turnon_delay) \
+static struct twlreg_info TWLRES_INFO_##label = { \
+ .base = offset, \
+ .desc = { \
+ .name = #label, \
+ .id = TWL6030_REG_##label, \
+ .ops = &twl6030_fixed_resource, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .enable_time = turnon_delay, \
+ }, \
+ }
+
/* VUSBCP is managed *only* by the USB subchip */
/* 6030 REG with base as PMC Slave Misc : 0x0030 */
/* Turnon-delay and remap configuration values for 6030 are not
@@ -591,6 +611,7 @@ TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
+TWL6030_FIXED_RESOURCE(CLK32KG, 0x8C, 0);
TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
@@ -622,6 +643,7 @@ static u8 twl_get_smps_mult(void)
#define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
#define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
#define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
+#define TWLRES_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLRES, label)
#define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
static const struct of_device_id twl_of_match[] = {
@@ -649,6 +671,7 @@ static const struct of_device_id twl_of_match[] = {
TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
+ TWLRES_OF_MATCH("ti,twl6030-clk32kg", CLK32KG),
TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 1b92f3c19f..99c1287fe3 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -1529,4 +1529,6 @@ endif # SCSI_LOWLEVEL
source "drivers/scsi/device_handler/Kconfig"
+source "drivers/scsi/vhba/Kconfig"
+
endmenu
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index c00e3dd579..97546650b6 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -153,6 +153,7 @@ obj-$(CONFIG_CHR_DEV_SCH) += ch.o
obj-$(CONFIG_SCSI_ENCLOSURE) += ses.o
obj-$(CONFIG_SCSI_HISI_SAS) += hisi_sas/
+obj-$(CONFIG_VHBA) += vhba/
# This goes last, so that "real" scsi devices probe earlier
obj-$(CONFIG_SCSI_DEBUG) += scsi_debug.o
diff --git a/drivers/scsi/vhba/Kconfig b/drivers/scsi/vhba/Kconfig
new file mode 100644
index 0000000000..7ccb7d8dc2
--- /dev/null
+++ b/drivers/scsi/vhba/Kconfig
@@ -0,0 +1,9 @@
+config VHBA
+ tristate "Virtual (SCSI) Host Bus Adapter"
+ depends on SCSI
+ ---help---
+ This is the in-kernel part of CDEmu, a CD/DVD-ROM device
+ emulator.
+
+ This driver can also be built as a module. If so, the module
+ will be called vhba.
diff --git a/drivers/scsi/vhba/Makefile b/drivers/scsi/vhba/Makefile
new file mode 100644
index 0000000000..aee4d88175
--- /dev/null
+++ b/drivers/scsi/vhba/Makefile
@@ -0,0 +1,4 @@
+VHBA_VERSION := 20190831
+
+obj-$(CONFIG_VHBA) += vhba.o
+ccflags-y := -DVHBA_VERSION=\"$(VHBA_VERSION)\" -Werror
diff --git a/drivers/scsi/vhba/vhba.c b/drivers/scsi/vhba/vhba.c
new file mode 100644
index 0000000000..05e455529d
--- /dev/null
+++ b/drivers/scsi/vhba/vhba.c
@@ -0,0 +1,1073 @@
+/*
+ * vhba.c
+ *
+ * Copyright (C) 2007-2012 Chia-I Wu <b90201047 AT ntu DOT edu DOT tw>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/version.h>
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/highmem.h>
+#include <linux/fs.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
+#include <linux/sched/signal.h>
+#else
+#include <linux/sched.h>
+#endif
+#include <linux/platform_device.h>
+#include <linux/miscdevice.h>
+#include <linux/poll.h>
+#include <linux/slab.h>
+#include <linux/scatterlist.h>
+#ifdef CONFIG_COMPAT
+#include <linux/compat.h>
+#endif
+#include <asm/uaccess.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+
+
+MODULE_AUTHOR("Chia-I Wu");
+MODULE_VERSION(VHBA_VERSION);
+MODULE_DESCRIPTION("Virtual SCSI HBA");
+MODULE_LICENSE("GPL");
+
+#ifdef DEBUG
+#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__, ## args)
+#else
+#define DPRINTK(fmt, args...)
+#endif
+
+#define VHBA_MAX_SECTORS_PER_IO 256
+#define VHBA_MAX_BUS 16
+#define VHBA_MAX_ID 16 /* Usually 8 or 16 */
+#define VHBA_MAX_DEVICES (VHBA_MAX_BUS * (VHBA_MAX_ID-1))
+#define VHBA_CAN_QUEUE 32
+#define VHBA_INVALID_BUS -1
+#define VHBA_INVALID_ID -1
+#define VHBA_KBUF_SIZE PAGE_SIZE
+
+#define DATA_TO_DEVICE(dir) ((dir) == DMA_TO_DEVICE || (dir) == DMA_BIDIRECTIONAL)
+#define DATA_FROM_DEVICE(dir) ((dir) == DMA_FROM_DEVICE || (dir) == DMA_BIDIRECTIONAL)
+
+
+enum vhba_req_state {
+ VHBA_REQ_FREE,
+ VHBA_REQ_PENDING,
+ VHBA_REQ_READING,
+ VHBA_REQ_SENT,
+ VHBA_REQ_WRITING,
+};
+
+struct vhba_command {
+ struct scsi_cmnd *cmd;
+ unsigned long serial_number;
+ int status;
+ struct list_head entry;
+};
+
+struct vhba_device {
+ int bus; /* aka. channel */
+ int id;
+ int num;
+ spinlock_t cmd_lock;
+ struct list_head cmd_list;
+ wait_queue_head_t cmd_wq;
+ atomic_t refcnt;
+
+ unsigned char *kbuf;
+ size_t kbuf_size;
+
+ unsigned long cmd_count;
+};
+
+struct vhba_host {
+ struct Scsi_Host *shost;
+ spinlock_t cmd_lock;
+ int cmd_next;
+ struct vhba_command commands[VHBA_CAN_QUEUE];
+ spinlock_t dev_lock;
+ struct vhba_device *devices[VHBA_MAX_DEVICES];
+ int num_devices;
+ DECLARE_BITMAP(chgmap, VHBA_MAX_DEVICES);
+ int chgtype[VHBA_MAX_DEVICES];
+ struct work_struct scan_devices;
+};
+
+#define MAX_COMMAND_SIZE 16
+
+struct vhba_request {
+ __u32 tag;
+ __u32 lun;
+ __u8 cdb[MAX_COMMAND_SIZE];
+ __u8 cdb_len;
+ __u32 data_len;
+};
+
+struct vhba_response {
+ __u32 tag;
+ __u32 status;
+ __u32 data_len;
+};
+
+static struct vhba_command *vhba_alloc_command (void);
+static void vhba_free_command (struct vhba_command *vcmd);
+
+static struct platform_device vhba_platform_device;
+
+static struct vhba_device *vhba_device_alloc (void)
+{
+ struct vhba_device *vdev;
+
+ vdev = kzalloc(sizeof(struct vhba_device), GFP_KERNEL);
+ if (!vdev) {
+ return NULL;
+ }
+
+ vdev->bus = VHBA_INVALID_BUS;
+ vdev->id = VHBA_INVALID_ID;
+ spin_lock_init(&vdev->cmd_lock);
+ INIT_LIST_HEAD(&vdev->cmd_list);
+ init_waitqueue_head(&vdev->cmd_wq);
+ atomic_set(&vdev->refcnt, 1);
+
+ vdev->kbuf = NULL;
+ vdev->kbuf_size = 0;
+
+ vdev->cmd_count = 0;
+
+ return vdev;
+}
+
+static void devnum_to_bus_and_id(int devnum, int *bus, int *id)
+{
+ int a = devnum / (VHBA_MAX_ID-1);
+ int b = devnum % (VHBA_MAX_ID-1);
+
+ *bus = a;
+ *id = b + 1;
+}
+
+static int bus_and_id_to_devnum(int bus, int id)
+{
+ return (bus * (VHBA_MAX_ID-1)) + id - 1;
+}
+
+static void vhba_device_put (struct vhba_device *vdev)
+{
+ if (atomic_dec_and_test(&vdev->refcnt)) {
+ kfree(vdev);
+ }
+}
+
+static struct vhba_device *vhba_device_get (struct vhba_device *vdev)
+{
+ atomic_inc(&vdev->refcnt);
+
+ return vdev;
+}
+
+static int vhba_device_queue (struct vhba_device *vdev, struct scsi_cmnd *cmd)
+{
+ struct vhba_command *vcmd;
+ unsigned long flags;
+
+ vcmd = vhba_alloc_command();
+ if (!vcmd) {
+ return SCSI_MLQUEUE_HOST_BUSY;
+ }
+
+ vcmd->cmd = cmd;
+
+ spin_lock_irqsave(&vdev->cmd_lock, flags);
+ vcmd->serial_number = vdev->cmd_count++;
+ list_add_tail(&vcmd->entry, &vdev->cmd_list);
+ spin_unlock_irqrestore(&vdev->cmd_lock, flags);
+
+ wake_up_interruptible(&vdev->cmd_wq);
+
+ return 0;
+}
+
+static int vhba_device_dequeue (struct vhba_device *vdev, struct scsi_cmnd *cmd)
+{
+ struct vhba_command *vcmd;
+ int retval;
+ unsigned long flags;
+
+ spin_lock_irqsave(&vdev->cmd_lock, flags);
+ list_for_each_entry(vcmd, &vdev->cmd_list, entry) {
+ if (vcmd->cmd == cmd) {
+ list_del_init(&vcmd->entry);
+ break;
+ }
+ }
+
+ /* command not found */
+ if (&vcmd->entry == &vdev->cmd_list) {
+ spin_unlock_irqrestore(&vdev->cmd_lock, flags);
+ return SUCCESS;
+ }
+
+ while (vcmd->status == VHBA_REQ_READING || vcmd->status == VHBA_REQ_WRITING) {
+ spin_unlock_irqrestore(&vdev->cmd_lock, flags);
+ scmd_dbg(cmd, "wait for I/O before aborting\n");
+ schedule_timeout(1);
+ spin_lock_irqsave(&vdev->cmd_lock, flags);
+ }
+
+ retval = (vcmd->status == VHBA_REQ_SENT) ? FAILED : SUCCESS;
+
+ vhba_free_command(vcmd);
+
+ spin_unlock_irqrestore(&vdev->cmd_lock, flags);
+
+ return retval;
+}
+
+static inline void vhba_scan_devices_add (struct vhba_host *vhost, int bus, int id)
+{
+ struct scsi_device *sdev;
+
+ sdev = scsi_device_lookup(vhost->shost, bus, id, 0);
+ if (!sdev) {
+ scsi_add_device(vhost->shost, bus, id, 0);
+ } else {
+ dev_warn(&vhost->shost->shost_gendev, "tried to add an already-existing device %d:%d:0!\n", bus, id);
+ scsi_device_put(sdev);
+ }
+}
+
+static inline void vhba_scan_devices_remove (struct vhba_host *vhost, int bus, int id)
+{
+ struct scsi_device *sdev;
+
+ sdev = scsi_device_lookup(vhost->shost, bus, id, 0);
+ if (sdev) {
+ scsi_remove_device(sdev);
+ scsi_device_put(sdev);
+ } else {
+ dev_warn(&vhost->shost->shost_gendev, "tried to remove non-existing device %d:%d:0!\n", bus, id);
+ }
+}
+
+static void vhba_scan_devices (struct work_struct *work)
+{
+ struct vhba_host *vhost = container_of(work, struct vhba_host, scan_devices);
+ unsigned long flags;
+ int devnum, change, exists;
+ int bus, id;
+
+ while (1) {
+ spin_lock_irqsave(&vhost->dev_lock, flags);
+
+ devnum = find_first_bit(vhost->chgmap, VHBA_MAX_DEVICES);
+ if (devnum >= VHBA_MAX_DEVICES) {
+ spin_unlock_irqrestore(&vhost->dev_lock, flags);
+ break;
+ }
+ change = vhost->chgtype[devnum];
+ exists = vhost->devices[devnum] != NULL;
+
+ vhost->chgtype[devnum] = 0;
+ clear_bit(devnum, vhost->chgmap);
+
+ spin_unlock_irqrestore(&vhost->dev_lock, flags);
+
+ devnum_to_bus_and_id(devnum, &bus, &id);
+
+ if (change < 0) {
+ dev_dbg(&vhost->shost->shost_gendev, "trying to remove target %d:%d:0\n", bus, id);
+ vhba_scan_devices_remove(vhost, bus, id);
+ } else if (change > 0) {
+ dev_dbg(&vhost->shost->shost_gendev, "trying to add target %d:%d:0\n", bus, id);
+ vhba_scan_devices_add(vhost, bus, id);
+ } else {
+ /* quick sequence of add/remove or remove/add; we determine
+ which one it was by checking if device structure exists */
+ if (exists) {
+ /* remove followed by add: remove and (re)add */
+ dev_dbg(&vhost->shost->shost_gendev, "trying to (re)add target %d:%d:0\n", bus, id);
+ vhba_scan_devices_remove(vhost, bus, id);
+ vhba_scan_devices_add(vhost, bus, id);
+ } else {
+ /* add followed by remove: no-op */
+ dev_dbg(&vhost->shost->shost_gendev, "no-op for target %d:%d:0\n", bus, id);
+ }
+ }
+ }
+}
+
+static int vhba_add_device (struct vhba_device *vdev)
+{
+ struct vhba_host *vhost;
+ int i;
+ unsigned long flags;
+ int bus, id;
+
+ vhost = platform_get_drvdata(&vhba_platform_device);
+
+ vhba_device_get(vdev);
+
+ spin_lock_irqsave(&vhost->dev_lock, flags);
+ if (vhost->num_devices >= VHBA_MAX_DEVICES) {
+ spin_unlock_irqrestore(&vhost->dev_lock, flags);
+ vhba_device_put(vdev);
+ return -EBUSY;
+ }
+
+ for (i = 0; i < VHBA_MAX_DEVICES; i++) {
+ devnum_to_bus_and_id(i, &bus, &id);
+
+ if (vhost->devices[i] == NULL) {
+ vdev->bus = bus;
+ vdev->id = id;
+ vdev->num = i;
+ vhost->devices[i] = vdev;
+ vhost->num_devices++;
+ set_bit(i, vhost->chgmap);
+ vhost->chgtype[i]++;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&vhost->dev_lock, flags);
+
+ schedule_work(&vhost->scan_devices);
+
+ return 0;
+}
+
+static int vhba_remove_device (struct vhba_device *vdev)
+{
+ struct vhba_host *vhost;
+ unsigned long flags;
+
+ vhost = platform_get_drvdata(&vhba_platform_device);
+
+ spin_lock_irqsave(&vhost->dev_lock, flags);
+ set_bit(vdev->num, vhost->chgmap);
+ vhost->chgtype[vdev->num]--;
+ vhost->devices[vdev->num] = NULL;
+ vhost->num_devices--;
+ vdev->bus = VHBA_INVALID_BUS;
+ vdev->id = VHBA_INVALID_ID;
+ spin_unlock_irqrestore(&vhost->dev_lock, flags);
+
+ vhba_device_put(vdev);
+
+ schedule_work(&vhost->scan_devices);
+
+ return 0;
+}
+
+static struct vhba_device *vhba_lookup_device (int devnum)
+{
+ struct vhba_host *vhost;
+ struct vhba_device *vdev = NULL;
+ unsigned long flags;
+
+ vhost = platform_get_drvdata(&vhba_platform_device);
+
+ if (likely(devnum < VHBA_MAX_DEVICES)) {
+ spin_lock_irqsave(&vhost->dev_lock, flags);
+ vdev = vhost->devices[devnum];
+ if (vdev) {
+ vdev = vhba_device_get(vdev);
+ }
+
+ spin_unlock_irqrestore(&vhost->dev_lock, flags);
+ }
+
+ return vdev;
+}
+
+static struct vhba_command *vhba_alloc_command (void)
+{
+ struct vhba_host *vhost;
+ struct vhba_command *vcmd;
+ unsigned long flags;
+ int i;
+
+ vhost = platform_get_drvdata(&vhba_platform_device);
+
+ spin_lock_irqsave(&vhost->cmd_lock, flags);
+
+ vcmd = vhost->commands + vhost->cmd_next++;
+ if (vcmd->status != VHBA_REQ_FREE) {
+ for (i = 0; i < vhost->shost->can_queue; i++) {
+ vcmd = vhost->commands + i;
+
+ if (vcmd->status == VHBA_REQ_FREE) {
+ vhost->cmd_next = i + 1;
+ break;
+ }
+ }
+
+ if (i == vhost->shost->can_queue) {
+ vcmd = NULL;
+ }
+ }
+
+ if (vcmd) {
+ vcmd->status = VHBA_REQ_PENDING;
+ }
+
+ vhost->cmd_next %= vhost->shost->can_queue;
+
+ spin_unlock_irqrestore(&vhost->cmd_lock, flags);
+
+ return vcmd;
+}
+
+static void vhba_free_command (struct vhba_command *vcmd)
+{
+ struct vhba_host *vhost;
+ unsigned long flags;
+
+ vhost = platform_get_drvdata(&vhba_platform_device);
+
+ spin_lock_irqsave(&vhost->cmd_lock, flags);
+ vcmd->status = VHBA_REQ_FREE;
+ spin_unlock_irqrestore(&vhost->cmd_lock, flags);
+}
+
+static int vhba_queuecommand_lck (struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
+{
+ struct vhba_device *vdev;
+ int retval;
+
+ scmd_dbg(cmd, "queue %p\n", cmd);
+
+ vdev = vhba_lookup_device(bus_and_id_to_devnum(cmd->device->channel, cmd->device->id));
+ if (!vdev) {
+ scmd_dbg(cmd, "no such device\n");
+
+ cmd->result = DID_NO_CONNECT << 16;
+ done(cmd);
+
+ return 0;
+ }
+
+ cmd->scsi_done = done;
+ retval = vhba_device_queue(vdev, cmd);
+
+ vhba_device_put(vdev);
+
+ return retval;
+}
+
+#ifdef DEF_SCSI_QCMD
+DEF_SCSI_QCMD(vhba_queuecommand)
+#else
+#define vhba_queuecommand vhba_queuecommand_lck
+#endif
+
+static int vhba_abort (struct scsi_cmnd *cmd)
+{
+ struct vhba_device *vdev;
+ int retval = SUCCESS;
+
+ scmd_dbg(cmd, "abort %p\n", cmd);
+
+ vdev = vhba_lookup_device(bus_and_id_to_devnum(cmd->device->channel, cmd->device->id));
+ if (vdev) {
+ retval = vhba_device_dequeue(vdev, cmd);
+ vhba_device_put(vdev);
+ } else {
+ cmd->result = DID_NO_CONNECT << 16;
+ }
+
+ return retval;
+}
+
+static struct scsi_host_template vhba_template = {
+ .module = THIS_MODULE,
+ .name = "vhba",
+ .proc_name = "vhba",
+ .queuecommand = vhba_queuecommand,
+ .eh_abort_handler = vhba_abort,
+ .can_queue = VHBA_CAN_QUEUE,
+ .this_id = -1,
+ .cmd_per_lun = 1,
+ .max_sectors = VHBA_MAX_SECTORS_PER_IO,
+ .sg_tablesize = 256,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0)
+ .max_segment_size = VHBA_KBUF_SIZE,
+#endif
+};
+
+static ssize_t do_request (struct vhba_device *vdev, unsigned long cmd_serial_number, struct scsi_cmnd *cmd, char __user *buf, size_t buf_len)
+{
+ struct vhba_request vreq;
+ ssize_t ret;
+
+ scmd_dbg(cmd, "request %lu (%p), cdb 0x%x, bufflen %d, sg count %d\n",
+ cmd_serial_number, cmd, cmd->cmnd[0], scsi_bufflen(cmd), scsi_sg_count(cmd));
+
+ ret = sizeof(vreq);
+ if (DATA_TO_DEVICE(cmd->sc_data_direction)) {
+ ret += scsi_bufflen(cmd);
+ }
+
+ if (ret > buf_len) {
+ scmd_dbg(cmd, "buffer too small (%zd < %zd) for a request\n", buf_len, ret);
+ return -EIO;
+ }
+
+ vreq.tag = cmd_serial_number;
+ vreq.lun = cmd->device->lun;
+ memcpy(vreq.cdb, cmd->cmnd, MAX_COMMAND_SIZE);
+ vreq.cdb_len = cmd->cmd_len;
+ vreq.data_len = scsi_bufflen(cmd);
+
+ if (copy_to_user(buf, &vreq, sizeof(vreq))) {
+ return -EFAULT;
+ }
+
+ if (DATA_TO_DEVICE(cmd->sc_data_direction) && vreq.data_len) {
+ buf += sizeof(vreq);
+
+ if (scsi_sg_count(cmd)) {
+ unsigned char *kaddr, *uaddr;
+ struct scatterlist *sglist = scsi_sglist(cmd);
+ struct scatterlist *sg;
+ int i;
+
+ uaddr = (unsigned char *) buf;
+
+ for_each_sg(sglist, sg, scsi_sg_count(cmd), i) {
+ size_t len = sg->length;
+
+ if (len > vdev->kbuf_size) {
+ scmd_dbg(cmd, "segment size (%zu) exceeds kbuf size (%zu)!", len, vdev->kbuf_size);
+ len = vdev->kbuf_size;
+ }
+
+ kaddr = kmap_atomic(sg_page(sg));
+ memcpy(vdev->kbuf, kaddr + sg->offset, len);
+ kunmap_atomic(kaddr);
+
+ if (copy_to_user(uaddr, vdev->kbuf, len)) {
+ return -EFAULT;
+ }
+ uaddr += len;
+ }
+ } else {
+ if (copy_to_user(buf, scsi_sglist(cmd), vreq.data_len)) {
+ return -EFAULT;
+ }
+ }
+ }
+
+ return ret;
+}
+
+static ssize_t do_response (struct vhba_device *vdev, unsigned long cmd_serial_number, struct scsi_cmnd *cmd, const char __user *buf, size_t buf_len, struct vhba_response *res)
+{
+ ssize_t ret = 0;
+
+ scmd_dbg(cmd, "response %lu (%p), status %x, data len %d, sg count %d\n",
+ cmd_serial_number, cmd, res->status, res->data_len, scsi_sg_count(cmd));
+
+ if (res->status) {
+ unsigned char sense_stack[SCSI_SENSE_BUFFERSIZE];
+
+ if (res->data_len > SCSI_SENSE_BUFFERSIZE) {
+ scmd_dbg(cmd, "truncate sense (%d < %d)", SCSI_SENSE_BUFFERSIZE, res->data_len);
+ res->data_len = SCSI_SENSE_BUFFERSIZE;
+ }
+
+ /* Copy via temporary buffer on stack in order to avoid problems
+ with PAX on grsecurity-enabled kernels */
+ if (copy_from_user(sense_stack, buf, res->data_len)) {
+ return -EFAULT;
+ }
+ memcpy(cmd->sense_buffer, sense_stack, res->data_len);
+
+ cmd->result = res->status;
+
+ ret += res->data_len;
+ } else if (DATA_FROM_DEVICE(cmd->sc_data_direction) && scsi_bufflen(cmd)) {
+ size_t to_read;
+
+ if (res->data_len > scsi_bufflen(cmd)) {
+ scmd_dbg(cmd, "truncate data (%d < %d)\n", scsi_bufflen(cmd), res->data_len);
+ res->data_len = scsi_bufflen(cmd);
+ }
+
+ to_read = res->data_len;
+
+ if (scsi_sg_count(cmd)) {
+ unsigned char *kaddr, *uaddr;
+ struct scatterlist *sglist = scsi_sglist(cmd);
+ struct scatterlist *sg;
+ int i;
+
+ uaddr = (unsigned char *)buf;
+
+ for_each_sg(sglist, sg, scsi_sg_count(cmd), i) {
+ size_t len = (sg->length < to_read) ? sg->length : to_read;
+
+ if (len > vdev->kbuf_size) {
+ scmd_dbg(cmd, "segment size (%zu) exceeds kbuf size (%zu)!", len, vdev->kbuf_size);
+ len = vdev->kbuf_size;
+ }
+
+ if (copy_from_user(vdev->kbuf, uaddr, len)) {
+ return -EFAULT;
+ }
+ uaddr += len;
+
+ kaddr = kmap_atomic(sg_page(sg));
+ memcpy(kaddr + sg->offset, vdev->kbuf, len);
+ kunmap_atomic(kaddr);
+
+ to_read -= len;
+ if (to_read == 0) {
+ break;
+ }
+ }
+ } else {
+ if (copy_from_user(scsi_sglist(cmd), buf, res->data_len)) {
+ return -EFAULT;
+ }
+
+ to_read -= res->data_len;
+ }
+
+ scsi_set_resid(cmd, to_read);
+
+ ret += res->data_len - to_read;
+ }
+
+ return ret;
+}
+
+static inline struct vhba_command *next_command (struct vhba_device *vdev)
+{
+ struct vhba_command *vcmd;
+
+ list_for_each_entry(vcmd, &vdev->cmd_list, entry) {
+ if (vcmd->status == VHBA_REQ_PENDING) {
+ break;
+ }
+ }
+
+ if (&vcmd->entry == &vdev->cmd_list) {
+ vcmd = NULL;
+ }
+
+ return vcmd;
+}
+
+static inline struct vhba_command *match_command (struct vhba_device *vdev, u32 tag)
+{
+ struct vhba_command *vcmd;
+
+ list_for_each_entry(vcmd, &vdev->cmd_list, entry) {
+ if (vcmd->serial_number == tag) {
+ break;
+ }
+ }
+
+ if (&vcmd->entry == &vdev->cmd_list) {
+ vcmd = NULL;
+ }
+
+ return vcmd;
+}
+
+static struct vhba_command *wait_command (struct vhba_device *vdev, unsigned long flags)
+{
+ struct vhba_command *vcmd;
+ DEFINE_WAIT(wait);
+
+ while (!(vcmd = next_command(vdev))) {
+ if (signal_pending(current)) {
+ break;
+ }
+
+ prepare_to_wait(&vdev->cmd_wq, &wait, TASK_INTERRUPTIBLE);
+
+ spin_unlock_irqrestore(&vdev->cmd_lock, flags);
+
+ schedule();
+
+ spin_lock_irqsave(&vdev->cmd_lock, flags);
+ }
+
+ finish_wait(&vdev->cmd_wq, &wait);
+ if (vcmd) {
+ vcmd->status = VHBA_REQ_READING;
+ }
+
+ return vcmd;
+}
+
+static ssize_t vhba_ctl_read (struct file *file, char __user *buf, size_t buf_len, loff_t *offset)
+{
+ struct vhba_device *vdev;
+ struct vhba_command *vcmd;
+ ssize_t ret;
+ unsigned long flags;
+
+ vdev = file->private_data;
+
+ /* Get next command */
+ if (file->f_flags & O_NONBLOCK) {
+ /* Non-blocking variant */
+ spin_lock_irqsave(&vdev->cmd_lock, flags);
+ vcmd = next_command(vdev);
+ spin_unlock_irqrestore(&vdev->cmd_lock, flags);
+
+ if (!vcmd) {
+ return -EWOULDBLOCK;
+ }
+ } else {
+ /* Blocking variant */
+ spin_lock_irqsave(&vdev->cmd_lock, flags);
+ vcmd = wait_command(vdev, flags);
+ spin_unlock_irqrestore(&vdev->cmd_lock, flags);
+
+ if (!vcmd) {
+ return -ERESTARTSYS;
+ }
+ }
+
+ ret = do_request(vdev, vcmd->serial_number, vcmd->cmd, buf, buf_len);
+
+ spin_lock_irqsave(&vdev->cmd_lock, flags);
+ if (ret >= 0) {
+ vcmd->status = VHBA_REQ_SENT;
+ *offset += ret;
+ } else {
+ vcmd->status = VHBA_REQ_PENDING;
+ }
+
+ spin_unlock_irqrestore(&vdev->cmd_lock, flags);
+
+ return ret;
+}
+
+static ssize_t vhba_ctl_write (struct file *file, const char __user *buf, size_t buf_len, loff_t *offset)
+{
+ struct vhba_device *vdev;
+ struct vhba_command *vcmd;
+ struct vhba_response res;
+ ssize_t ret;
+ unsigned long flags;
+
+ if (buf_len < sizeof(res)) {
+ return -EIO;
+ }
+
+ if (copy_from_user(&res, buf, sizeof(res))) {
+ return -EFAULT;
+ }
+
+ vdev = file->private_data;
+
+ spin_lock_irqsave(&vdev->cmd_lock, flags);
+ vcmd = match_command(vdev, res.tag);
+ if (!vcmd || vcmd->status != VHBA_REQ_SENT) {
+ spin_unlock_irqrestore(&vdev->cmd_lock, flags);
+ DPRINTK("not expecting response\n");
+ return -EIO;
+ }
+ vcmd->status = VHBA_REQ_WRITING;
+ spin_unlock_irqrestore(&vdev->cmd_lock, flags);
+
+ ret = do_response(vdev, vcmd->serial_number, vcmd->cmd, buf + sizeof(res), buf_len - sizeof(res), &res);
+
+ spin_lock_irqsave(&vdev->cmd_lock, flags);
+ if (ret >= 0) {
+ vcmd->cmd->scsi_done(vcmd->cmd);
+ ret += sizeof(res);
+
+ /* don't compete with vhba_device_dequeue */
+ if (!list_empty(&vcmd->entry)) {
+ list_del_init(&vcmd->entry);
+ vhba_free_command(vcmd);
+ }
+ } else {
+ vcmd->status = VHBA_REQ_SENT;
+ }
+
+ spin_unlock_irqrestore(&vdev->cmd_lock, flags);
+
+ return ret;
+}
+
+static long vhba_ctl_ioctl (struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct vhba_device *vdev = file->private_data;
+ struct vhba_host *vhost;
+ struct scsi_device *sdev;
+
+ switch (cmd) {
+ case 0xBEEF001: {
+ vhost = platform_get_drvdata(&vhba_platform_device);
+ sdev = scsi_device_lookup(vhost->shost, vdev->bus, vdev->id, 0);
+
+ if (sdev) {
+ int id[4] = {
+ sdev->host->host_no,
+ sdev->channel,
+ sdev->id,
+ sdev->lun
+ };
+
+ scsi_device_put(sdev);
+
+ if (copy_to_user((void *)arg, id, sizeof(id))) {
+ return -EFAULT;
+ }
+
+ return 0;
+ } else {
+ return -ENODEV;
+ }
+ }
+ }
+
+ return -ENOTTY;
+}
+
+#ifdef CONFIG_COMPAT
+static long vhba_ctl_compat_ioctl (struct file *file, unsigned int cmd, unsigned long arg)
+{
+ unsigned long compat_arg = (unsigned long)compat_ptr(arg);
+ return vhba_ctl_ioctl(file, cmd, compat_arg);
+}
+#endif
+
+static unsigned int vhba_ctl_poll (struct file *file, poll_table *wait)
+{
+ struct vhba_device *vdev = file->private_data;
+ unsigned int mask = 0;
+ unsigned long flags;
+
+ poll_wait(file, &vdev->cmd_wq, wait);
+
+ spin_lock_irqsave(&vdev->cmd_lock, flags);
+ if (next_command(vdev)) {
+ mask |= POLLIN | POLLRDNORM;
+ }
+ spin_unlock_irqrestore(&vdev->cmd_lock, flags);
+
+ return mask;
+}
+
+static int vhba_ctl_open (struct inode *inode, struct file *file)
+{
+ struct vhba_device *vdev;
+ int retval;
+
+ DPRINTK("open\n");
+
+ /* check if vhba is probed */
+ if (!platform_get_drvdata(&vhba_platform_device)) {
+ return -ENODEV;
+ }
+
+ vdev = vhba_device_alloc();
+ if (!vdev) {
+ return -ENOMEM;
+ }
+
+ vdev->kbuf_size = VHBA_KBUF_SIZE;
+ vdev->kbuf = kmalloc(vdev->kbuf_size, GFP_KERNEL);
+ if (!vdev->kbuf) {
+ return -ENOMEM;
+ }
+
+ if (!(retval = vhba_add_device(vdev))) {
+ file->private_data = vdev;
+ }
+
+ vhba_device_put(vdev);
+
+ return retval;
+}
+
+static int vhba_ctl_release (struct inode *inode, struct file *file)
+{
+ struct vhba_device *vdev;
+ struct vhba_command *vcmd;
+ unsigned long flags;
+
+ DPRINTK("release\n");
+
+ vdev = file->private_data;
+
+ vhba_device_get(vdev);
+ vhba_remove_device(vdev);
+
+ spin_lock_irqsave(&vdev->cmd_lock, flags);
+ list_for_each_entry(vcmd, &vdev->cmd_list, entry) {
+ WARN_ON(vcmd->status == VHBA_REQ_READING || vcmd->status == VHBA_REQ_WRITING);
+
+ scmd_dbg(vcmd->cmd, "device released with command %lu (%p)\n", vcmd->serial_number, vcmd->cmd);
+ vcmd->cmd->result = DID_NO_CONNECT << 16;
+ vcmd->cmd->scsi_done(vcmd->cmd);
+
+ vhba_free_command(vcmd);
+ }
+ INIT_LIST_HEAD(&vdev->cmd_list);
+ spin_unlock_irqrestore(&vdev->cmd_lock, flags);
+
+ kfree(vdev->kbuf);
+ vdev->kbuf = NULL;
+
+ vhba_device_put(vdev);
+
+ return 0;
+}
+
+static struct file_operations vhba_ctl_fops = {
+ .owner = THIS_MODULE,
+ .open = vhba_ctl_open,
+ .release = vhba_ctl_release,
+ .read = vhba_ctl_read,
+ .write = vhba_ctl_write,
+ .poll = vhba_ctl_poll,
+ .unlocked_ioctl = vhba_ctl_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = vhba_ctl_compat_ioctl,
+#endif
+};
+
+static struct miscdevice vhba_miscdev = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "vhba_ctl",
+ .fops = &vhba_ctl_fops,
+};
+
+static int vhba_probe (struct platform_device *pdev)
+{
+ struct Scsi_Host *shost;
+ struct vhba_host *vhost;
+ int i;
+
+ shost = scsi_host_alloc(&vhba_template, sizeof(struct vhba_host));
+ if (!shost) {
+ return -ENOMEM;
+ }
+
+ shost->max_channel = VHBA_MAX_BUS-1;
+ shost->max_id = VHBA_MAX_ID;
+ /* we don't support lun > 0 */
+ shost->max_lun = 1;
+ shost->max_cmd_len = MAX_COMMAND_SIZE;
+
+ vhost = (struct vhba_host *)shost->hostdata;
+ memset(vhost, 0, sizeof(*vhost));
+
+ vhost->shost = shost;
+ vhost->num_devices = 0;
+ spin_lock_init(&vhost->dev_lock);
+ spin_lock_init(&vhost->cmd_lock);
+ INIT_WORK(&vhost->scan_devices, vhba_scan_devices);
+ vhost->cmd_next = 0;
+ for (i = 0; i < vhost->shost->can_queue; i++) {
+ vhost->commands[i].status = VHBA_REQ_FREE;
+ }
+
+ platform_set_drvdata(pdev, vhost);
+
+ if (scsi_add_host(shost, &pdev->dev)) {
+ scsi_host_put(shost);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static int vhba_remove (struct platform_device *pdev)
+{
+ struct vhba_host *vhost;
+ struct Scsi_Host *shost;
+
+ vhost = platform_get_drvdata(pdev);
+ shost = vhost->shost;
+
+ scsi_remove_host(shost);
+ scsi_host_put(shost);
+
+ return 0;
+}
+
+static void vhba_release (struct device * dev)
+{
+ return;
+}
+
+static struct platform_device vhba_platform_device = {
+ .name = "vhba",
+ .id = -1,
+ .dev = {
+ .release = vhba_release,
+ },
+};
+
+static struct platform_driver vhba_platform_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "vhba",
+ },
+ .probe = vhba_probe,
+ .remove = vhba_remove,
+};
+
+static int __init vhba_init (void)
+{
+ int ret;
+
+ ret = platform_device_register(&vhba_platform_device);
+ if (ret < 0) {
+ return ret;
+ }
+
+ ret = platform_driver_register(&vhba_platform_driver);
+ if (ret < 0) {
+ platform_device_unregister(&vhba_platform_device);
+ return ret;
+ }
+
+ ret = misc_register(&vhba_miscdev);
+ if (ret < 0) {
+ platform_driver_unregister(&vhba_platform_driver);
+ platform_device_unregister(&vhba_platform_device);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void __exit vhba_exit(void)
+{
+ misc_deregister(&vhba_miscdev);
+ platform_driver_unregister(&vhba_platform_driver);
+ platform_device_unregister(&vhba_platform_device);
+}
+
+module_init(vhba_init);
+module_exit(vhba_exit);
+
diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 255786f2e8..bf4fe6ec73 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -720,9 +720,9 @@ static int spidev_probe(struct spi_device *spi)
* compatible string, it is a Linux implementation thing
* rather than a description of the hardware.
*/
- WARN(spi->dev.of_node &&
- of_device_is_compatible(spi->dev.of_node, "spidev"),
- "%pOF: buggy DT: spidev listed directly in DT\n", spi->dev.of_node);
+// WARN(spi->dev.of_node &&
+// of_device_is_compatible(spi->dev.of_node, "spidev"),
+// "%pOF: buggy DT: spidev listed directly in DT\n", spi->dev.of_node);
spidev_probe_acpi(spi);
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 7c96a01eef..429a608bd2 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -120,4 +120,6 @@ source "drivers/staging/kpc2000/Kconfig"
source "drivers/staging/isdn/Kconfig"
+source "drivers/staging/exfat/Kconfig"
+
endif # STAGING
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index fcaac9693b..53be23e920 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -50,3 +50,4 @@ obj-$(CONFIG_EROFS_FS) += erofs/
obj-$(CONFIG_FIELDBUS_DEV) += fieldbus/
obj-$(CONFIG_KPC2000) += kpc2000/
obj-$(CONFIG_ISDN_CAPI) += isdn/
+obj-$(CONFIG_EXFAT_FS) += exfat/
diff --git a/drivers/staging/exfat/Kconfig b/drivers/staging/exfat/Kconfig
new file mode 100644
index 0000000000..78b32aa2ca
--- /dev/null
+++ b/drivers/staging/exfat/Kconfig
@@ -0,0 +1,39 @@
+config EXFAT_FS
+ tristate "exFAT fs support"
+ select NLS
+ help
+ This adds support for the exFAT file system.
+
+config EXFAT_DISCARD
+ bool "enable discard support"
+ depends on EXFAT_FS
+ default y
+
+config EXFAT_DELAYED_SYNC
+ bool "enable delayed sync"
+ depends on EXFAT_FS
+ default n
+
+config EXFAT_KERNEL_DEBUG
+ bool "enable kernel debug features via ioctl"
+ depends on EXFAT_FS
+ default n
+
+config EXFAT_DEBUG_MSG
+ bool "print debug messages"
+ depends on EXFAT_FS
+ default n
+
+config EXFAT_DEFAULT_CODEPAGE
+ int "Default codepage for exFAT"
+ default 437
+ depends on EXFAT_FS
+ help
+ This option should be set to the codepage of your exFAT filesystems.
+
+config EXFAT_DEFAULT_IOCHARSET
+ string "Default iocharset for exFAT"
+ default "utf8"
+ depends on EXFAT_FS
+ help
+ Set this to the default input/output character set you'd like exFAT to use.
diff --git a/drivers/staging/exfat/Makefile b/drivers/staging/exfat/Makefile
new file mode 100644
index 0000000000..84944dfbae
--- /dev/null
+++ b/drivers/staging/exfat/Makefile
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_EXFAT_FS) += exfat.o
+
+exfat-y := exfat_core.o \
+ exfat_super.o \
+ exfat_blkdev.o \
+ exfat_cache.o \
+ exfat_nls.o \
+ exfat_upcase.o
diff --git a/drivers/staging/exfat/TODO b/drivers/staging/exfat/TODO
new file mode 100644
index 0000000000..a3eb282f9e
--- /dev/null
+++ b/drivers/staging/exfat/TODO
@@ -0,0 +1,12 @@
+exfat_core.c - ffsReadFile - the goto err_out seem to leak a brelse().
+same for ffsWriteFile.
+
+exfat_core.c - fs_sync(sb,0) all over the place looks fishy as hell.
+There's only one place that calls it with a non-zero argument.
+
+ffsTruncateFile - if (old_size <= new_size) {
+That doesn't look right. How did it ever work? Are they relying on lazy
+block allocation when actual writes happen? If nothing else, it never
+does the 'fid->size = new_size' and do the inode update....
+
+ffsSetAttr() is just dangling in the breeze, not wired up at all...
diff --git a/drivers/staging/exfat/exfat.h b/drivers/staging/exfat/exfat.h
new file mode 100644
index 0000000000..bae180e106
--- /dev/null
+++ b/drivers/staging/exfat/exfat.h
@@ -0,0 +1,973 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
+ */
+
+#ifndef _EXFAT_H
+#define _EXFAT_H
+
+#include <linux/types.h>
+#include <linux/buffer_head.h>
+
+#ifdef CONFIG_EXFAT_KERNEL_DEBUG
+ /* For Debugging Purpose */
+ /* IOCTL code 'f' used by
+ * - file systems typically #0~0x1F
+ * - embedded terminal devices #128~
+ * - exts for debugging purpose #99
+ * number 100 and 101 is available now but has possible conflicts
+ */
+#define EXFAT_IOC_GET_DEBUGFLAGS _IOR('f', 100, long)
+#define EXFAT_IOC_SET_DEBUGFLAGS _IOW('f', 101, long)
+
+#define EXFAT_DEBUGFLAGS_INVALID_UMOUNT 0x01
+#define EXFAT_DEBUGFLAGS_ERROR_RW 0x02
+#endif /* CONFIG_EXFAT_KERNEL_DEBUG */
+
+#ifdef CONFIG_EXFAT_DEBUG_MSG
+#define DEBUG 1
+#else
+#undef DEBUG
+#endif
+
+#define DENTRY_SIZE 32 /* dir entry size */
+#define DENTRY_SIZE_BITS 5
+
+/* PBR entries */
+#define PBR_SIGNATURE 0xAA55
+#define EXT_SIGNATURE 0xAA550000
+#define VOL_LABEL "NO NAME " /* size should be 11 */
+#define OEM_NAME "MSWIN4.1" /* size should be 8 */
+#define STR_FAT12 "FAT12 " /* size should be 8 */
+#define STR_FAT16 "FAT16 " /* size should be 8 */
+#define STR_FAT32 "FAT32 " /* size should be 8 */
+#define STR_EXFAT "EXFAT " /* size should be 8 */
+#define VOL_CLEAN 0x0000
+#define VOL_DIRTY 0x0002
+
+/* max number of clusters */
+#define FAT12_THRESHOLD 4087 /* 2^12 - 1 + 2 (clu 0 & 1) */
+#define FAT16_THRESHOLD 65527 /* 2^16 - 1 + 2 */
+#define FAT32_THRESHOLD 268435457 /* 2^28 - 1 + 2 */
+#define EXFAT_THRESHOLD 268435457 /* 2^28 - 1 + 2 */
+
+/* file types */
+#define TYPE_UNUSED 0x0000
+#define TYPE_DELETED 0x0001
+#define TYPE_INVALID 0x0002
+#define TYPE_CRITICAL_PRI 0x0100
+#define TYPE_BITMAP 0x0101
+#define TYPE_UPCASE 0x0102
+#define TYPE_VOLUME 0x0103
+#define TYPE_DIR 0x0104
+#define TYPE_FILE 0x011F
+#define TYPE_SYMLINK 0x015F
+#define TYPE_CRITICAL_SEC 0x0200
+#define TYPE_STREAM 0x0201
+#define TYPE_EXTEND 0x0202
+#define TYPE_ACL 0x0203
+#define TYPE_BENIGN_PRI 0x0400
+#define TYPE_GUID 0x0401
+#define TYPE_PADDING 0x0402
+#define TYPE_ACLTAB 0x0403
+#define TYPE_BENIGN_SEC 0x0800
+#define TYPE_ALL 0x0FFF
+
+/* time modes */
+#define TM_CREATE 0
+#define TM_MODIFY 1
+#define TM_ACCESS 2
+
+/* checksum types */
+#define CS_DIR_ENTRY 0
+#define CS_PBR_SECTOR 1
+#define CS_DEFAULT 2
+
+#define CLUSTER_16(x) ((u16)(x))
+#define CLUSTER_32(x) ((u32)(x))
+
+#define FALSE 0
+#define TRUE 1
+
+#define START_SECTOR(x) \
+ ((((sector_t)((x) - 2)) << p_fs->sectors_per_clu_bits) + \
+ p_fs->data_start_sector)
+
+#define IS_LAST_SECTOR_IN_CLUSTER(sec) \
+ ((((sec) - p_fs->data_start_sector + 1) & \
+ ((1 << p_fs->sectors_per_clu_bits) - 1)) == 0)
+
+#define GET_CLUSTER_FROM_SECTOR(sec) \
+ ((u32)((((sec) - p_fs->data_start_sector) >> \
+ p_fs->sectors_per_clu_bits) + 2))
+
+#define GET16(p_src) \
+ (((u16)(p_src)[0]) | (((u16)(p_src)[1]) << 8))
+#define GET32(p_src) \
+ (((u32)(p_src)[0]) | (((u32)(p_src)[1]) << 8) | \
+ (((u32)(p_src)[2]) << 16) | (((u32)(p_src)[3]) << 24))
+#define GET64(p_src) \
+ (((u64)(p_src)[0]) | (((u64)(p_src)[1]) << 8) | \
+ (((u64)(p_src)[2]) << 16) | (((u64)(p_src)[3]) << 24) | \
+ (((u64)(p_src)[4]) << 32) | (((u64)(p_src)[5]) << 40) | \
+ (((u64)(p_src)[6]) << 48) | (((u64)(p_src)[7]) << 56))
+
+#define SET16(p_dst, src) \
+ do { \
+ (p_dst)[0] = (u8)(src); \
+ (p_dst)[1] = (u8)(((u16)(src)) >> 8); \
+ } while (0)
+#define SET32(p_dst, src) \
+ do { \
+ (p_dst)[0] = (u8)(src); \
+ (p_dst)[1] = (u8)(((u32)(src)) >> 8); \
+ (p_dst)[2] = (u8)(((u32)(src)) >> 16); \
+ (p_dst)[3] = (u8)(((u32)(src)) >> 24); \
+ } while (0)
+#define SET64(p_dst, src) \
+ do { \
+ (p_dst)[0] = (u8)(src); \
+ (p_dst)[1] = (u8)(((u64)(src)) >> 8); \
+ (p_dst)[2] = (u8)(((u64)(src)) >> 16); \
+ (p_dst)[3] = (u8)(((u64)(src)) >> 24); \
+ (p_dst)[4] = (u8)(((u64)(src)) >> 32); \
+ (p_dst)[5] = (u8)(((u64)(src)) >> 40); \
+ (p_dst)[6] = (u8)(((u64)(src)) >> 48); \
+ (p_dst)[7] = (u8)(((u64)(src)) >> 56); \
+ } while (0)
+
+#ifdef __LITTLE_ENDIAN
+#define GET16_A(p_src) (*((u16 *)(p_src)))
+#define GET32_A(p_src) (*((u32 *)(p_src)))
+#define GET64_A(p_src) (*((u64 *)(p_src)))
+#define SET16_A(p_dst, src) (*((u16 *)(p_dst)) = (u16)(src))
+#define SET32_A(p_dst, src) (*((u32 *)(p_dst)) = (u32)(src))
+#define SET64_A(p_dst, src) (*((u64 *)(p_dst)) = (u64)(src))
+#else /* BIG_ENDIAN */
+#define GET16_A(p_src) GET16(p_src)
+#define GET32_A(p_src) GET32(p_src)
+#define GET64_A(p_src) GET64(p_src)
+#define SET16_A(p_dst, src) SET16(p_dst, src)
+#define SET32_A(p_dst, src) SET32(p_dst, src)
+#define SET64_A(p_dst, src) SET64(p_dst, src)
+#endif
+
+/* cache size (in number of sectors) */
+/* (should be an exponential value of 2) */
+#define FAT_CACHE_SIZE 128
+#define FAT_CACHE_HASH_SIZE 64
+#define BUF_CACHE_SIZE 256
+#define BUF_CACHE_HASH_SIZE 64
+
+/* Upcase table macro */
+#define HIGH_INDEX_BIT (8)
+#define HIGH_INDEX_MASK (0xFF00)
+#define LOW_INDEX_BIT (16-HIGH_INDEX_BIT)
+#define UTBL_ROW_COUNT (1<<LOW_INDEX_BIT)
+#define UTBL_COL_COUNT (1<<HIGH_INDEX_BIT)
+
+static inline u16 get_col_index(u16 i)
+{
+ return i >> LOW_INDEX_BIT;
+}
+static inline u16 get_row_index(u16 i)
+{
+ return i & ~HIGH_INDEX_MASK;
+}
+
+#define EXFAT_SUPER_MAGIC (0x2011BAB0L)
+#define EXFAT_ROOT_INO 1
+
+/* FAT types */
+#define FAT12 0x01 /* FAT12 */
+#define FAT16 0x0E /* Win95 FAT16 (LBA) */
+#define FAT32 0x0C /* Win95 FAT32 (LBA) */
+#define EXFAT 0x07 /* exFAT */
+
+/* file name lengths */
+#define MAX_CHARSET_SIZE 3 /* max size of multi-byte character */
+#define MAX_PATH_DEPTH 15 /* max depth of path name */
+#define MAX_NAME_LENGTH 256 /* max len of filename including NULL */
+#define MAX_PATH_LENGTH 260 /* max len of pathname including NULL */
+#define DOS_NAME_LENGTH 11 /* DOS filename length excluding NULL */
+#define DOS_PATH_LENGTH 80 /* DOS pathname length excluding NULL */
+
+/* file attributes */
+#define ATTR_NORMAL 0x0000
+#define ATTR_READONLY 0x0001
+#define ATTR_HIDDEN 0x0002
+#define ATTR_SYSTEM 0x0004
+#define ATTR_VOLUME 0x0008
+#define ATTR_SUBDIR 0x0010
+#define ATTR_ARCHIVE 0x0020
+#define ATTR_SYMLINK 0x0040
+#define ATTR_EXTEND 0x000F
+#define ATTR_RWMASK 0x007E
+
+/* file creation modes */
+#define FM_REGULAR 0x00
+#define FM_SYMLINK 0x40
+
+/* return values */
+#define FFS_SUCCESS 0
+#define FFS_MEDIAERR 1
+#define FFS_FORMATERR 2
+#define FFS_MOUNTED 3
+#define FFS_NOTMOUNTED 4
+#define FFS_ALIGNMENTERR 5
+#define FFS_SEMAPHOREERR 6
+#define FFS_INVALIDPATH 7
+#define FFS_INVALIDFID 8
+#define FFS_NOTFOUND 9
+#define FFS_FILEEXIST 10
+#define FFS_PERMISSIONERR 11
+#define FFS_NOTOPENED 12
+#define FFS_MAXOPENED 13
+#define FFS_FULL 14
+#define FFS_EOF 15
+#define FFS_DIRBUSY 16
+#define FFS_MEMORYERR 17
+#define FFS_NAMETOOLONG 18
+#define FFS_ERROR 19
+
+#define NUM_UPCASE 2918
+
+#define DOS_CUR_DIR_NAME ". "
+#define DOS_PAR_DIR_NAME ".. "
+
+#ifdef __LITTLE_ENDIAN
+#define UNI_CUR_DIR_NAME ".\0"
+#define UNI_PAR_DIR_NAME ".\0.\0"
+#else
+#define UNI_CUR_DIR_NAME "\0."
+#define UNI_PAR_DIR_NAME "\0.\0."
+#endif
+
+struct date_time_t {
+ u16 Year;
+ u16 Month;
+ u16 Day;
+ u16 Hour;
+ u16 Minute;
+ u16 Second;
+ u16 MilliSecond;
+};
+
+struct part_info_t {
+ u32 Offset; /* start sector number of the partition */
+ u32 Size; /* in sectors */
+};
+
+struct dev_info_t {
+ u32 SecSize; /* sector size in bytes */
+ u32 DevSize; /* block device size in sectors */
+};
+
+struct vol_info_t {
+ u32 FatType;
+ u32 ClusterSize;
+ u32 NumClusters;
+ u32 FreeClusters;
+ u32 UsedClusters;
+};
+
+/* directory structure */
+struct chain_t {
+ u32 dir;
+ s32 size;
+ u8 flags;
+};
+
+struct file_id_t {
+ struct chain_t dir;
+ s32 entry;
+ u32 type;
+ u32 attr;
+ u32 start_clu;
+ u64 size;
+ u8 flags;
+ s64 rwoffset;
+ s32 hint_last_off;
+ u32 hint_last_clu;
+};
+
+struct dir_entry_t {
+ char Name[MAX_NAME_LENGTH * MAX_CHARSET_SIZE];
+
+ /* used only for FAT12/16/32, not used for exFAT */
+ char ShortName[DOS_NAME_LENGTH + 2];
+
+ u32 Attr;
+ u64 Size;
+ u32 NumSubdirs;
+ struct date_time_t CreateTimestamp;
+ struct date_time_t ModifyTimestamp;
+ struct date_time_t AccessTimestamp;
+};
+
+struct timestamp_t {
+ u16 sec; /* 0 ~ 59 */
+ u16 min; /* 0 ~ 59 */
+ u16 hour; /* 0 ~ 23 */
+ u16 day; /* 1 ~ 31 */
+ u16 mon; /* 1 ~ 12 */
+ u16 year; /* 0 ~ 127 (since 1980) */
+};
+
+/* MS_DOS FAT partition boot record (512 bytes) */
+struct pbr_sector_t {
+ u8 jmp_boot[3];
+ u8 oem_name[8];
+ u8 bpb[109];
+ u8 boot_code[390];
+ u8 signature[2];
+};
+
+/* MS-DOS FAT12/16 BIOS parameter block (51 bytes) */
+struct bpb16_t {
+ u8 sector_size[2];
+ u8 sectors_per_clu;
+ u8 num_reserved[2];
+ u8 num_fats;
+ u8 num_root_entries[2];
+ u8 num_sectors[2];
+ u8 media_type;
+ u8 num_fat_sectors[2];
+ u8 sectors_in_track[2];
+ u8 num_heads[2];
+ u8 num_hid_sectors[4];
+ u8 num_huge_sectors[4];
+
+ u8 phy_drv_no;
+ u8 reserved;
+ u8 ext_signature;
+ u8 vol_serial[4];
+ u8 vol_label[11];
+ u8 vol_type[8];
+};
+
+/* MS-DOS FAT32 BIOS parameter block (79 bytes) */
+struct bpb32_t {
+ u8 sector_size[2];
+ u8 sectors_per_clu;
+ u8 num_reserved[2];
+ u8 num_fats;
+ u8 num_root_entries[2];
+ u8 num_sectors[2];
+ u8 media_type;
+ u8 num_fat_sectors[2];
+ u8 sectors_in_track[2];
+ u8 num_heads[2];
+ u8 num_hid_sectors[4];
+ u8 num_huge_sectors[4];
+ u8 num_fat32_sectors[4];
+ u8 ext_flags[2];
+ u8 fs_version[2];
+ u8 root_cluster[4];
+ u8 fsinfo_sector[2];
+ u8 backup_sector[2];
+ u8 reserved[12];
+
+ u8 phy_drv_no;
+ u8 ext_reserved;
+ u8 ext_signature;
+ u8 vol_serial[4];
+ u8 vol_label[11];
+ u8 vol_type[8];
+};
+
+/* MS-DOS EXFAT BIOS parameter block (109 bytes) */
+struct bpbex_t {
+ u8 reserved1[53];
+ u8 vol_offset[8];
+ u8 vol_length[8];
+ u8 fat_offset[4];
+ u8 fat_length[4];
+ u8 clu_offset[4];
+ u8 clu_count[4];
+ u8 root_cluster[4];
+ u8 vol_serial[4];
+ u8 fs_version[2];
+ u8 vol_flags[2];
+ u8 sector_size_bits;
+ u8 sectors_per_clu_bits;
+ u8 num_fats;
+ u8 phy_drv_no;
+ u8 perc_in_use;
+ u8 reserved2[7];
+};
+
+/* MS-DOS FAT file system information sector (512 bytes) */
+struct fsi_sector_t {
+ u8 signature1[4];
+ u8 reserved1[480];
+ u8 signature2[4];
+ u8 free_cluster[4];
+ u8 next_cluster[4];
+ u8 reserved2[14];
+ u8 signature3[2];
+};
+
+/* MS-DOS FAT directory entry (32 bytes) */
+struct dentry_t {
+ u8 dummy[32];
+};
+
+struct dos_dentry_t {
+ u8 name[DOS_NAME_LENGTH];
+ u8 attr;
+ u8 lcase;
+ u8 create_time_ms;
+ u8 create_time[2];
+ u8 create_date[2];
+ u8 access_date[2];
+ u8 start_clu_hi[2];
+ u8 modify_time[2];
+ u8 modify_date[2];
+ u8 start_clu_lo[2];
+ u8 size[4];
+};
+
+/* MS-DOS FAT extended directory entry (32 bytes) */
+struct ext_dentry_t {
+ u8 order;
+ u8 unicode_0_4[10];
+ u8 attr;
+ u8 sysid;
+ u8 checksum;
+ u8 unicode_5_10[12];
+ u8 start_clu[2];
+ u8 unicode_11_12[4];
+};
+
+/* MS-DOS EXFAT file directory entry (32 bytes) */
+struct file_dentry_t {
+ u8 type;
+ u8 num_ext;
+ u8 checksum[2];
+ u8 attr[2];
+ u8 reserved1[2];
+ u8 create_time[2];
+ u8 create_date[2];
+ u8 modify_time[2];
+ u8 modify_date[2];
+ u8 access_time[2];
+ u8 access_date[2];
+ u8 create_time_ms;
+ u8 modify_time_ms;
+ u8 access_time_ms;
+ u8 reserved2[9];
+};
+
+/* MS-DOS EXFAT stream extension directory entry (32 bytes) */
+struct strm_dentry_t {
+ u8 type;
+ u8 flags;
+ u8 reserved1;
+ u8 name_len;
+ u8 name_hash[2];
+ u8 reserved2[2];
+ u8 valid_size[8];
+ u8 reserved3[4];
+ u8 start_clu[4];
+ u8 size[8];
+};
+
+/* MS-DOS EXFAT file name directory entry (32 bytes) */
+struct name_dentry_t {
+ u8 type;
+ u8 flags;
+ u8 unicode_0_14[30];
+};
+
+/* MS-DOS EXFAT allocation bitmap directory entry (32 bytes) */
+struct bmap_dentry_t {
+ u8 type;
+ u8 flags;
+ u8 reserved[18];
+ u8 start_clu[4];
+ u8 size[8];
+};
+
+/* MS-DOS EXFAT up-case table directory entry (32 bytes) */
+struct case_dentry_t {
+ u8 type;
+ u8 reserved1[3];
+ u8 checksum[4];
+ u8 reserved2[12];
+ u8 start_clu[4];
+ u8 size[8];
+};
+
+/* MS-DOS EXFAT volume label directory entry (32 bytes) */
+struct volm_dentry_t {
+ u8 type;
+ u8 label_len;
+ u8 unicode_0_10[22];
+ u8 reserved[8];
+};
+
+/* unused entry hint information */
+struct uentry_t {
+ u32 dir;
+ s32 entry;
+ struct chain_t clu;
+};
+
+/* DOS name structure */
+struct dos_name_t {
+ u8 name[DOS_NAME_LENGTH];
+ u8 name_case;
+};
+
+/* unicode name structure */
+struct uni_name_t {
+ u16 name[MAX_NAME_LENGTH];
+ u16 name_hash;
+ u8 name_len;
+};
+
+struct buf_cache_t {
+ struct buf_cache_t *next;
+ struct buf_cache_t *prev;
+ struct buf_cache_t *hash_next;
+ struct buf_cache_t *hash_prev;
+ s32 drv;
+ sector_t sec;
+ u32 flag;
+ struct buffer_head *buf_bh;
+};
+
+struct fs_func {
+ s32 (*alloc_cluster)(struct super_block *sb, s32 num_alloc,
+ struct chain_t *p_chain);
+ void (*free_cluster)(struct super_block *sb, struct chain_t *p_chain,
+ s32 do_relse);
+ s32 (*count_used_clusters)(struct super_block *sb);
+
+ s32 (*init_dir_entry)(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, u32 type, u32 start_clu, u64 size);
+ s32 (*init_ext_entry)(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, s32 num_entries,
+ struct uni_name_t *p_uniname,
+ struct dos_name_t *p_dosname);
+ s32 (*find_dir_entry)(struct super_block *sb, struct chain_t *p_dir,
+ struct uni_name_t *p_uniname, s32 num_entries,
+ struct dos_name_t *p_dosname, u32 type);
+ void (*delete_dir_entry)(struct super_block *sb,
+ struct chain_t *p_dir, s32 entry,
+ s32 offset, s32 num_entries);
+ void (*get_uni_name_from_ext_entry)(struct super_block *sb,
+ struct chain_t *p_dir, s32 entry,
+ u16 *uniname);
+ s32 (*count_ext_entries)(struct super_block *sb,
+ struct chain_t *p_dir, s32 entry,
+ struct dentry_t *p_entry);
+ s32 (*calc_num_entries)(struct uni_name_t *p_uniname);
+
+ u32 (*get_entry_type)(struct dentry_t *p_entry);
+ void (*set_entry_type)(struct dentry_t *p_entry, u32 type);
+ u32 (*get_entry_attr)(struct dentry_t *p_entry);
+ void (*set_entry_attr)(struct dentry_t *p_entry, u32 attr);
+ u8 (*get_entry_flag)(struct dentry_t *p_entry);
+ void (*set_entry_flag)(struct dentry_t *p_entry, u8 flag);
+ u32 (*get_entry_clu0)(struct dentry_t *p_entry);
+ void (*set_entry_clu0)(struct dentry_t *p_entry, u32 clu0);
+ u64 (*get_entry_size)(struct dentry_t *p_entry);
+ void (*set_entry_size)(struct dentry_t *p_entry, u64 size);
+ void (*get_entry_time)(struct dentry_t *p_entry,
+ struct timestamp_t *tp, u8 mode);
+ void (*set_entry_time)(struct dentry_t *p_entry,
+ struct timestamp_t *tp, u8 mode);
+};
+
+struct fs_info_t {
+ u32 drv; /* drive ID */
+ u32 vol_type; /* volume FAT type */
+ u32 vol_id; /* volume serial number */
+
+ u64 num_sectors; /* num of sectors in volume */
+ u32 num_clusters; /* num of clusters in volume */
+ u32 cluster_size; /* cluster size in bytes */
+ u32 cluster_size_bits;
+ u32 sectors_per_clu; /* cluster size in sectors */
+ u32 sectors_per_clu_bits;
+
+ u32 PBR_sector; /* PBR sector */
+ u32 FAT1_start_sector; /* FAT1 start sector */
+ u32 FAT2_start_sector; /* FAT2 start sector */
+ u32 root_start_sector; /* root dir start sector */
+ u32 data_start_sector; /* data area start sector */
+ u32 num_FAT_sectors; /* num of FAT sectors */
+
+ u32 root_dir; /* root dir cluster */
+ u32 dentries_in_root; /* num of dentries in root dir */
+ u32 dentries_per_clu; /* num of dentries per cluster */
+
+ u32 vol_flag; /* volume dirty flag */
+ struct buffer_head *pbr_bh; /* PBR sector */
+
+ u32 map_clu; /* allocation bitmap start cluster */
+ u32 map_sectors; /* num of allocation bitmap sectors */
+ struct buffer_head **vol_amap; /* allocation bitmap */
+
+ u16 **vol_utbl; /* upcase table */
+
+ u32 clu_srch_ptr; /* cluster search pointer */
+ u32 used_clusters; /* number of used clusters */
+ struct uentry_t hint_uentry; /* unused entry hint information */
+
+ u32 dev_ejected; /* block device operation error flag */
+
+ struct fs_func *fs_func;
+ struct semaphore v_sem;
+
+ /* FAT cache */
+ struct buf_cache_t FAT_cache_array[FAT_CACHE_SIZE];
+ struct buf_cache_t FAT_cache_lru_list;
+ struct buf_cache_t FAT_cache_hash_list[FAT_CACHE_HASH_SIZE];
+
+ /* buf cache */
+ struct buf_cache_t buf_cache_array[BUF_CACHE_SIZE];
+ struct buf_cache_t buf_cache_lru_list;
+ struct buf_cache_t buf_cache_hash_list[BUF_CACHE_HASH_SIZE];
+};
+
+#define ES_2_ENTRIES 2
+#define ES_3_ENTRIES 3
+#define ES_ALL_ENTRIES 0
+
+struct entry_set_cache_t {
+ /* sector number that contains file_entry */
+ sector_t sector;
+
+ /* byte offset in the sector */
+ s32 offset;
+
+ /*
+ * flag in stream entry.
+ * 01 for cluster chain,
+ * 03 for contig. clusteres.
+ */
+ s32 alloc_flag;
+
+ u32 num_entries;
+
+ /* __buf should be the last member */
+ void *__buf;
+};
+
+#define EXFAT_ERRORS_CONT 1 /* ignore error and continue */
+#define EXFAT_ERRORS_PANIC 2 /* panic on error */
+#define EXFAT_ERRORS_RO 3 /* remount r/o on error */
+
+/* ioctl command */
+#define EXFAT_IOCTL_GET_VOLUME_ID _IOR('r', 0x12, __u32)
+
+struct exfat_mount_options {
+ kuid_t fs_uid;
+ kgid_t fs_gid;
+ unsigned short fs_fmask;
+ unsigned short fs_dmask;
+
+ /* permission for setting the [am]time */
+ unsigned short allow_utime;
+
+ /* codepage for shortname conversions */
+ unsigned short codepage;
+
+ /* charset for filename input/display */
+ char *iocharset;
+
+ unsigned char casesensitive;
+
+ /* on error: continue, panic, remount-ro */
+ unsigned char errors;
+#ifdef CONFIG_EXFAT_DISCARD
+ /* flag on if -o dicard specified and device support discard() */
+ unsigned char discard;
+#endif /* CONFIG_EXFAT_DISCARD */
+};
+
+#define EXFAT_HASH_BITS 8
+#define EXFAT_HASH_SIZE (1UL << EXFAT_HASH_BITS)
+
+/*
+ * EXFAT file system in-core superblock data
+ */
+struct bd_info_t {
+ s32 sector_size; /* in bytes */
+ s32 sector_size_bits;
+ s32 sector_size_mask;
+
+ /* total number of sectors in this block device */
+ s32 num_sectors;
+
+ /* opened or not */
+ bool opened;
+};
+
+struct exfat_sb_info {
+ struct fs_info_t fs_info;
+ struct bd_info_t bd_info;
+
+ struct exfat_mount_options options;
+
+ int s_dirt;
+ struct mutex s_lock;
+ struct nls_table *nls_disk; /* Codepage used on disk */
+ struct nls_table *nls_io; /* Charset used for input and display */
+
+ struct inode *fat_inode;
+
+ spinlock_t inode_hash_lock;
+ struct hlist_head inode_hashtable[EXFAT_HASH_SIZE];
+#ifdef CONFIG_EXFAT_KERNEL_DEBUG
+ long debug_flags;
+#endif /* CONFIG_EXFAT_KERNEL_DEBUG */
+};
+
+/*
+ * EXFAT file system inode data in memory
+ */
+struct exfat_inode_info {
+ struct file_id_t fid;
+ char *target;
+ /* NOTE: mmu_private is 64bits, so must hold ->i_mutex to access */
+ loff_t mmu_private; /* physically allocated size */
+ loff_t i_pos; /* on-disk position of directory entry or 0 */
+ struct hlist_node i_hash_fat; /* hash by i_location */
+ struct rw_semaphore truncate_lock;
+ struct inode vfs_inode;
+ struct rw_semaphore i_alloc_sem; /* protect bmap against truncate */
+};
+
+#define EXFAT_SB(sb) ((struct exfat_sb_info *)((sb)->s_fs_info))
+
+static inline struct exfat_inode_info *EXFAT_I(struct inode *inode)
+{
+ return container_of(inode, struct exfat_inode_info, vfs_inode);
+}
+
+/* NLS management function */
+u16 nls_upper(struct super_block *sb, u16 a);
+int nls_dosname_cmp(struct super_block *sb, u8 *a, u8 *b);
+int nls_uniname_cmp(struct super_block *sb, u16 *a, u16 *b);
+void nls_uniname_to_dosname(struct super_block *sb,
+ struct dos_name_t *p_dosname,
+ struct uni_name_t *p_uniname, bool *p_lossy);
+void nls_dosname_to_uniname(struct super_block *sb,
+ struct uni_name_t *p_uniname,
+ struct dos_name_t *p_dosname);
+void nls_uniname_to_cstring(struct super_block *sb, u8 *p_cstring,
+ struct uni_name_t *p_uniname);
+void nls_cstring_to_uniname(struct super_block *sb,
+ struct uni_name_t *p_uniname, u8 *p_cstring,
+ bool *p_lossy);
+
+/* buffer cache management */
+void buf_init(struct super_block *sb);
+void buf_shutdown(struct super_block *sb);
+int FAT_read(struct super_block *sb, u32 loc, u32 *content);
+s32 FAT_write(struct super_block *sb, u32 loc, u32 content);
+u8 *FAT_getblk(struct super_block *sb, sector_t sec);
+void FAT_modify(struct super_block *sb, sector_t sec);
+void FAT_release_all(struct super_block *sb);
+void FAT_sync(struct super_block *sb);
+u8 *buf_getblk(struct super_block *sb, sector_t sec);
+void buf_modify(struct super_block *sb, sector_t sec);
+void buf_lock(struct super_block *sb, sector_t sec);
+void buf_unlock(struct super_block *sb, sector_t sec);
+void buf_release(struct super_block *sb, sector_t sec);
+void buf_release_all(struct super_block *sb);
+void buf_sync(struct super_block *sb);
+
+/* fs management functions */
+void fs_set_vol_flags(struct super_block *sb, u32 new_flag);
+void fs_error(struct super_block *sb);
+
+/* cluster management functions */
+s32 clear_cluster(struct super_block *sb, u32 clu);
+s32 fat_alloc_cluster(struct super_block *sb, s32 num_alloc,
+ struct chain_t *p_chain);
+s32 exfat_alloc_cluster(struct super_block *sb, s32 num_alloc,
+ struct chain_t *p_chain);
+void fat_free_cluster(struct super_block *sb, struct chain_t *p_chain,
+ s32 do_relse);
+void exfat_free_cluster(struct super_block *sb, struct chain_t *p_chain,
+ s32 do_relse);
+u32 find_last_cluster(struct super_block *sb, struct chain_t *p_chain);
+s32 count_num_clusters(struct super_block *sb, struct chain_t *dir);
+s32 fat_count_used_clusters(struct super_block *sb);
+s32 exfat_count_used_clusters(struct super_block *sb);
+void exfat_chain_cont_cluster(struct super_block *sb, u32 chain, s32 len);
+
+/* allocation bitmap management functions */
+s32 load_alloc_bitmap(struct super_block *sb);
+void free_alloc_bitmap(struct super_block *sb);
+s32 set_alloc_bitmap(struct super_block *sb, u32 clu);
+s32 clr_alloc_bitmap(struct super_block *sb, u32 clu);
+u32 test_alloc_bitmap(struct super_block *sb, u32 clu);
+void sync_alloc_bitmap(struct super_block *sb);
+
+/* upcase table management functions */
+s32 load_upcase_table(struct super_block *sb);
+void free_upcase_table(struct super_block *sb);
+
+/* dir entry management functions */
+u32 fat_get_entry_type(struct dentry_t *p_entry);
+u32 exfat_get_entry_type(struct dentry_t *p_entry);
+void fat_set_entry_type(struct dentry_t *p_entry, u32 type);
+void exfat_set_entry_type(struct dentry_t *p_entry, u32 type);
+u32 fat_get_entry_attr(struct dentry_t *p_entry);
+u32 exfat_get_entry_attr(struct dentry_t *p_entry);
+void fat_set_entry_attr(struct dentry_t *p_entry, u32 attr);
+void exfat_set_entry_attr(struct dentry_t *p_entry, u32 attr);
+u8 fat_get_entry_flag(struct dentry_t *p_entry);
+u8 exfat_get_entry_flag(struct dentry_t *p_entry);
+void fat_set_entry_flag(struct dentry_t *p_entry, u8 flag);
+void exfat_set_entry_flag(struct dentry_t *p_entry, u8 flag);
+u32 fat_get_entry_clu0(struct dentry_t *p_entry);
+u32 exfat_get_entry_clu0(struct dentry_t *p_entry);
+void fat_set_entry_clu0(struct dentry_t *p_entry, u32 start_clu);
+void exfat_set_entry_clu0(struct dentry_t *p_entry, u32 start_clu);
+u64 fat_get_entry_size(struct dentry_t *p_entry);
+u64 exfat_get_entry_size(struct dentry_t *p_entry);
+void fat_set_entry_size(struct dentry_t *p_entry, u64 size);
+void exfat_set_entry_size(struct dentry_t *p_entry, u64 size);
+struct timestamp_t *tm_current(struct timestamp_t *tm);
+void fat_get_entry_time(struct dentry_t *p_entry, struct timestamp_t *tp,
+ u8 mode);
+void exfat_get_entry_time(struct dentry_t *p_entry, struct timestamp_t *tp,
+ u8 mode);
+void fat_set_entry_time(struct dentry_t *p_entry, struct timestamp_t *tp,
+ u8 mode);
+void exfat_set_entry_time(struct dentry_t *p_entry, struct timestamp_t *tp,
+ u8 mode);
+s32 fat_init_dir_entry(struct super_block *sb, struct chain_t *p_dir, s32 entry,
+ u32 type, u32 start_clu, u64 size);
+s32 exfat_init_dir_entry(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, u32 type, u32 start_clu, u64 size);
+s32 fat_init_ext_dir_entry(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, s32 num_entries,
+ struct uni_name_t *p_uniname,
+ struct dos_name_t *p_dosname);
+s32 exfat_init_ext_dir_entry(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, s32 num_entries,
+ struct uni_name_t *p_uniname,
+ struct dos_name_t *p_dosname);
+void init_dos_entry(struct dos_dentry_t *ep, u32 type, u32 start_clu);
+void init_ext_entry(struct ext_dentry_t *ep, s32 order, u8 chksum,
+ u16 *uniname);
+void init_file_entry(struct file_dentry_t *ep, u32 type);
+void init_strm_entry(struct strm_dentry_t *ep, u8 flags, u32 start_clu,
+ u64 size);
+void init_name_entry(struct name_dentry_t *ep, u16 *uniname);
+void fat_delete_dir_entry(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, s32 order, s32 num_entries);
+void exfat_delete_dir_entry(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, s32 order, s32 num_entries);
+
+s32 find_location(struct super_block *sb, struct chain_t *p_dir, s32 entry,
+ sector_t *sector, s32 *offset);
+struct dentry_t *get_entry_with_sector(struct super_block *sb, sector_t sector,
+ s32 offset);
+struct dentry_t *get_entry_in_dir(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, sector_t *sector);
+struct entry_set_cache_t *get_entry_set_in_dir(struct super_block *sb,
+ struct chain_t *p_dir, s32 entry,
+ u32 type,
+ struct dentry_t **file_ep);
+void release_entry_set(struct entry_set_cache_t *es);
+s32 write_whole_entry_set(struct super_block *sb, struct entry_set_cache_t *es);
+s32 write_partial_entries_in_entry_set(struct super_block *sb,
+ struct entry_set_cache_t *es,
+ struct dentry_t *ep, u32 count);
+s32 search_deleted_or_unused_entry(struct super_block *sb,
+ struct chain_t *p_dir, s32 num_entries);
+s32 find_empty_entry(struct inode *inode, struct chain_t *p_dir,
+ s32 num_entries);
+s32 fat_find_dir_entry(struct super_block *sb, struct chain_t *p_dir,
+ struct uni_name_t *p_uniname, s32 num_entries,
+ struct dos_name_t *p_dosname, u32 type);
+s32 exfat_find_dir_entry(struct super_block *sb, struct chain_t *p_dir,
+ struct uni_name_t *p_uniname, s32 num_entries,
+ struct dos_name_t *p_dosname, u32 type);
+s32 fat_count_ext_entries(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, struct dentry_t *p_entry);
+s32 exfat_count_ext_entries(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, struct dentry_t *p_entry);
+s32 count_dos_name_entries(struct super_block *sb, struct chain_t *p_dir,
+ u32 type);
+void update_dir_checksum(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry);
+void update_dir_checksum_with_entry_set(struct super_block *sb,
+ struct entry_set_cache_t *es);
+bool is_dir_empty(struct super_block *sb, struct chain_t *p_dir);
+
+/* name conversion functions */
+s32 get_num_entries_and_dos_name(struct super_block *sb, struct chain_t *p_dir,
+ struct uni_name_t *p_uniname, s32 *entries,
+ struct dos_name_t *p_dosname);
+void get_uni_name_from_dos_entry(struct super_block *sb,
+ struct dos_dentry_t *ep,
+ struct uni_name_t *p_uniname, u8 mode);
+void fat_get_uni_name_from_ext_entry(struct super_block *sb,
+ struct chain_t *p_dir, s32 entry,
+ u16 *uniname);
+void exfat_get_uni_name_from_ext_entry(struct super_block *sb,
+ struct chain_t *p_dir, s32 entry,
+ u16 *uniname);
+s32 extract_uni_name_from_ext_entry(struct ext_dentry_t *ep,
+ u16 *uniname, s32 order);
+s32 extract_uni_name_from_name_entry(struct name_dentry_t *ep,
+ u16 *uniname, s32 order);
+s32 fat_generate_dos_name(struct super_block *sb, struct chain_t *p_dir,
+ struct dos_name_t *p_dosname);
+void fat_attach_count_to_dos_name(u8 *dosname, s32 count);
+s32 fat_calc_num_entries(struct uni_name_t *p_uniname);
+s32 exfat_calc_num_entries(struct uni_name_t *p_uniname);
+u8 calc_checksum_1byte(void *data, s32 len, u8 chksum);
+u16 calc_checksum_2byte(void *data, s32 len, u16 chksum, s32 type);
+u32 calc_checksum_4byte(void *data, s32 len, u32 chksum, s32 type);
+
+/* name resolution functions */
+s32 resolve_path(struct inode *inode, char *path, struct chain_t *p_dir,
+ struct uni_name_t *p_uniname);
+s32 resolve_name(u8 *name, u8 **arg);
+
+/* file operation functions */
+s32 fat16_mount(struct super_block *sb, struct pbr_sector_t *p_pbr);
+s32 fat32_mount(struct super_block *sb, struct pbr_sector_t *p_pbr);
+s32 exfat_mount(struct super_block *sb, struct pbr_sector_t *p_pbr);
+s32 create_dir(struct inode *inode, struct chain_t *p_dir,
+ struct uni_name_t *p_uniname, struct file_id_t *fid);
+s32 create_file(struct inode *inode, struct chain_t *p_dir,
+ struct uni_name_t *p_uniname, u8 mode, struct file_id_t *fid);
+void remove_file(struct inode *inode, struct chain_t *p_dir, s32 entry);
+s32 rename_file(struct inode *inode, struct chain_t *p_dir, s32 old_entry,
+ struct uni_name_t *p_uniname, struct file_id_t *fid);
+s32 move_file(struct inode *inode, struct chain_t *p_olddir, s32 oldentry,
+ struct chain_t *p_newdir, struct uni_name_t *p_uniname,
+ struct file_id_t *fid);
+
+/* sector read/write functions */
+int sector_read(struct super_block *sb, sector_t sec,
+ struct buffer_head **bh, bool read);
+int sector_write(struct super_block *sb, sector_t sec,
+ struct buffer_head *bh, bool sync);
+int multi_sector_read(struct super_block *sb, sector_t sec,
+ struct buffer_head **bh, s32 num_secs, bool read);
+int multi_sector_write(struct super_block *sb, sector_t sec,
+ struct buffer_head *bh, s32 num_secs, bool sync);
+
+void bdev_open(struct super_block *sb);
+void bdev_close(struct super_block *sb);
+int bdev_read(struct super_block *sb, sector_t secno,
+ struct buffer_head **bh, u32 num_secs, bool read);
+int bdev_write(struct super_block *sb, sector_t secno,
+ struct buffer_head *bh, u32 num_secs, bool sync);
+int bdev_sync(struct super_block *sb);
+
+extern const u8 uni_upcase[];
+#endif /* _EXFAT_H */
diff --git a/drivers/staging/exfat/exfat_blkdev.c b/drivers/staging/exfat/exfat_blkdev.c
new file mode 100644
index 0000000000..f086c75e70
--- /dev/null
+++ b/drivers/staging/exfat/exfat_blkdev.c
@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
+ */
+
+#include <linux/blkdev.h>
+#include <linux/buffer_head.h>
+#include <linux/fs.h>
+#include "exfat.h"
+
+void bdev_open(struct super_block *sb)
+{
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ if (p_bd->opened)
+ return;
+
+ p_bd->sector_size = bdev_logical_block_size(sb->s_bdev);
+ p_bd->sector_size_bits = ilog2(p_bd->sector_size);
+ p_bd->sector_size_mask = p_bd->sector_size - 1;
+ p_bd->num_sectors = i_size_read(sb->s_bdev->bd_inode) >>
+ p_bd->sector_size_bits;
+ p_bd->opened = true;
+}
+
+void bdev_close(struct super_block *sb)
+{
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ p_bd->opened = false;
+}
+
+int bdev_read(struct super_block *sb, sector_t secno, struct buffer_head **bh,
+ u32 num_secs, bool read)
+{
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+#ifdef CONFIG_EXFAT_KERNEL_DEBUG
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ long flags = sbi->debug_flags;
+
+ if (flags & EXFAT_DEBUGFLAGS_ERROR_RW)
+ return FFS_MEDIAERR;
+#endif /* CONFIG_EXFAT_KERNEL_DEBUG */
+
+ if (!p_bd->opened)
+ return FFS_MEDIAERR;
+
+ if (*bh)
+ __brelse(*bh);
+
+ if (read)
+ *bh = __bread(sb->s_bdev, secno,
+ num_secs << p_bd->sector_size_bits);
+ else
+ *bh = __getblk(sb->s_bdev, secno,
+ num_secs << p_bd->sector_size_bits);
+
+ if (*bh)
+ return 0;
+
+ WARN(!p_fs->dev_ejected,
+ "[EXFAT] No bh, device seems wrong or to be ejected.\n");
+
+ return FFS_MEDIAERR;
+}
+
+int bdev_write(struct super_block *sb, sector_t secno, struct buffer_head *bh,
+ u32 num_secs, bool sync)
+{
+ s32 count;
+ struct buffer_head *bh2;
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+#ifdef CONFIG_EXFAT_KERNEL_DEBUG
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ long flags = sbi->debug_flags;
+
+ if (flags & EXFAT_DEBUGFLAGS_ERROR_RW)
+ return FFS_MEDIAERR;
+#endif /* CONFIG_EXFAT_KERNEL_DEBUG */
+
+ if (!p_bd->opened)
+ return FFS_MEDIAERR;
+
+ if (secno == bh->b_blocknr) {
+ lock_buffer(bh);
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+ unlock_buffer(bh);
+ if (sync && (sync_dirty_buffer(bh) != 0))
+ return FFS_MEDIAERR;
+ } else {
+ count = num_secs << p_bd->sector_size_bits;
+
+ bh2 = __getblk(sb->s_bdev, secno, count);
+ if (!bh2)
+ goto no_bh;
+
+ lock_buffer(bh2);
+ memcpy(bh2->b_data, bh->b_data, count);
+ set_buffer_uptodate(bh2);
+ mark_buffer_dirty(bh2);
+ unlock_buffer(bh2);
+ if (sync && (sync_dirty_buffer(bh2) != 0)) {
+ __brelse(bh2);
+ goto no_bh;
+ }
+ __brelse(bh2);
+ }
+
+ return 0;
+
+no_bh:
+ WARN(!p_fs->dev_ejected,
+ "[EXFAT] No bh, device seems wrong or to be ejected.\n");
+
+ return FFS_MEDIAERR;
+}
+
+int bdev_sync(struct super_block *sb)
+{
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+#ifdef CONFIG_EXFAT_KERNEL_DEBUG
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ long flags = sbi->debug_flags;
+
+ if (flags & EXFAT_DEBUGFLAGS_ERROR_RW)
+ return FFS_MEDIAERR;
+#endif /* CONFIG_EXFAT_KERNEL_DEBUG */
+
+ if (!p_bd->opened)
+ return FFS_MEDIAERR;
+
+ return sync_blockdev(sb->s_bdev);
+}
diff --git a/drivers/staging/exfat/exfat_cache.c b/drivers/staging/exfat/exfat_cache.c
new file mode 100644
index 0000000000..f05d692c2b
--- /dev/null
+++ b/drivers/staging/exfat/exfat_cache.c
@@ -0,0 +1,722 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
+ */
+
+#include <linux/buffer_head.h>
+#include <linux/fs.h>
+#include <linux/mutex.h>
+#include "exfat.h"
+
+#define LOCKBIT 0x01
+#define DIRTYBIT 0x02
+
+/* Local variables */
+static DEFINE_SEMAPHORE(f_sem);
+static DEFINE_SEMAPHORE(b_sem);
+
+static struct buf_cache_t *FAT_cache_find(struct super_block *sb, sector_t sec)
+{
+ s32 off;
+ struct buf_cache_t *bp, *hp;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ off = (sec +
+ (sec >> p_fs->sectors_per_clu_bits)) & (FAT_CACHE_HASH_SIZE - 1);
+
+ hp = &p_fs->FAT_cache_hash_list[off];
+ for (bp = hp->hash_next; bp != hp; bp = bp->hash_next) {
+ if ((bp->drv == p_fs->drv) && (bp->sec == sec)) {
+ WARN(!bp->buf_bh,
+ "[EXFAT] FAT_cache has no bh. It will make system panic.\n");
+
+ touch_buffer(bp->buf_bh);
+ return bp;
+ }
+ }
+ return NULL;
+}
+
+static void push_to_mru(struct buf_cache_t *bp, struct buf_cache_t *list)
+{
+ bp->next = list->next;
+ bp->prev = list;
+ list->next->prev = bp;
+ list->next = bp;
+}
+
+static void push_to_lru(struct buf_cache_t *bp, struct buf_cache_t *list)
+{
+ bp->prev = list->prev;
+ bp->next = list;
+ list->prev->next = bp;
+ list->prev = bp;
+}
+
+static void move_to_mru(struct buf_cache_t *bp, struct buf_cache_t *list)
+{
+ bp->prev->next = bp->next;
+ bp->next->prev = bp->prev;
+ push_to_mru(bp, list);
+}
+
+static void move_to_lru(struct buf_cache_t *bp, struct buf_cache_t *list)
+{
+ bp->prev->next = bp->next;
+ bp->next->prev = bp->prev;
+ push_to_lru(bp, list);
+}
+
+static struct buf_cache_t *FAT_cache_get(struct super_block *sb, sector_t sec)
+{
+ struct buf_cache_t *bp;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ bp = p_fs->FAT_cache_lru_list.prev;
+
+ move_to_mru(bp, &p_fs->FAT_cache_lru_list);
+ return bp;
+}
+
+static void FAT_cache_insert_hash(struct super_block *sb,
+ struct buf_cache_t *bp)
+{
+ s32 off;
+ struct buf_cache_t *hp;
+ struct fs_info_t *p_fs;
+
+ p_fs = &(EXFAT_SB(sb)->fs_info);
+ off = (bp->sec +
+ (bp->sec >> p_fs->sectors_per_clu_bits)) &
+ (FAT_CACHE_HASH_SIZE - 1);
+
+ hp = &p_fs->FAT_cache_hash_list[off];
+ bp->hash_next = hp->hash_next;
+ bp->hash_prev = hp;
+ hp->hash_next->hash_prev = bp;
+ hp->hash_next = bp;
+}
+
+static void FAT_cache_remove_hash(struct buf_cache_t *bp)
+{
+ (bp->hash_prev)->hash_next = bp->hash_next;
+ (bp->hash_next)->hash_prev = bp->hash_prev;
+}
+
+static void buf_cache_insert_hash(struct super_block *sb,
+ struct buf_cache_t *bp)
+{
+ s32 off;
+ struct buf_cache_t *hp;
+ struct fs_info_t *p_fs;
+
+ p_fs = &(EXFAT_SB(sb)->fs_info);
+ off = (bp->sec +
+ (bp->sec >> p_fs->sectors_per_clu_bits)) &
+ (BUF_CACHE_HASH_SIZE - 1);
+
+ hp = &p_fs->buf_cache_hash_list[off];
+ bp->hash_next = hp->hash_next;
+ bp->hash_prev = hp;
+ hp->hash_next->hash_prev = bp;
+ hp->hash_next = bp;
+}
+
+static void buf_cache_remove_hash(struct buf_cache_t *bp)
+{
+ (bp->hash_prev)->hash_next = bp->hash_next;
+ (bp->hash_next)->hash_prev = bp->hash_prev;
+}
+
+void buf_init(struct super_block *sb)
+{
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ int i;
+
+ /* LRU list */
+ p_fs->FAT_cache_lru_list.next = &p_fs->FAT_cache_lru_list;
+ p_fs->FAT_cache_lru_list.prev = &p_fs->FAT_cache_lru_list;
+
+ for (i = 0; i < FAT_CACHE_SIZE; i++) {
+ p_fs->FAT_cache_array[i].drv = -1;
+ p_fs->FAT_cache_array[i].sec = ~0;
+ p_fs->FAT_cache_array[i].flag = 0;
+ p_fs->FAT_cache_array[i].buf_bh = NULL;
+ p_fs->FAT_cache_array[i].prev = NULL;
+ p_fs->FAT_cache_array[i].next = NULL;
+ push_to_mru(&p_fs->FAT_cache_array[i],
+ &p_fs->FAT_cache_lru_list);
+ }
+
+ p_fs->buf_cache_lru_list.next = &p_fs->buf_cache_lru_list;
+ p_fs->buf_cache_lru_list.prev = &p_fs->buf_cache_lru_list;
+
+ for (i = 0; i < BUF_CACHE_SIZE; i++) {
+ p_fs->buf_cache_array[i].drv = -1;
+ p_fs->buf_cache_array[i].sec = ~0;
+ p_fs->buf_cache_array[i].flag = 0;
+ p_fs->buf_cache_array[i].buf_bh = NULL;
+ p_fs->buf_cache_array[i].prev = NULL;
+ p_fs->buf_cache_array[i].next = NULL;
+ push_to_mru(&p_fs->buf_cache_array[i],
+ &p_fs->buf_cache_lru_list);
+ }
+
+ /* HASH list */
+ for (i = 0; i < FAT_CACHE_HASH_SIZE; i++) {
+ p_fs->FAT_cache_hash_list[i].drv = -1;
+ p_fs->FAT_cache_hash_list[i].sec = ~0;
+ p_fs->FAT_cache_hash_list[i].hash_next =
+ &p_fs->FAT_cache_hash_list[i];
+ p_fs->FAT_cache_hash_list[i].hash_prev =
+ &p_fs->FAT_cache_hash_list[i];
+ }
+
+ for (i = 0; i < FAT_CACHE_SIZE; i++)
+ FAT_cache_insert_hash(sb, &p_fs->FAT_cache_array[i]);
+
+ for (i = 0; i < BUF_CACHE_HASH_SIZE; i++) {
+ p_fs->buf_cache_hash_list[i].drv = -1;
+ p_fs->buf_cache_hash_list[i].sec = ~0;
+ p_fs->buf_cache_hash_list[i].hash_next =
+ &p_fs->buf_cache_hash_list[i];
+ p_fs->buf_cache_hash_list[i].hash_prev =
+ &p_fs->buf_cache_hash_list[i];
+ }
+
+ for (i = 0; i < BUF_CACHE_SIZE; i++)
+ buf_cache_insert_hash(sb, &p_fs->buf_cache_array[i]);
+}
+
+void buf_shutdown(struct super_block *sb)
+{
+}
+
+static int __FAT_read(struct super_block *sb, u32 loc, u32 *content)
+{
+ s32 off;
+ u32 _content;
+ sector_t sec;
+ u8 *fat_sector, *fat_entry;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ if (p_fs->vol_type == FAT12) {
+ sec = p_fs->FAT1_start_sector +
+ ((loc + (loc >> 1)) >> p_bd->sector_size_bits);
+ off = (loc + (loc >> 1)) & p_bd->sector_size_mask;
+
+ if (off == (p_bd->sector_size - 1)) {
+ fat_sector = FAT_getblk(sb, sec);
+ if (!fat_sector)
+ return -1;
+
+ _content = (u32)fat_sector[off];
+
+ fat_sector = FAT_getblk(sb, ++sec);
+ if (!fat_sector)
+ return -1;
+
+ _content |= (u32)fat_sector[0] << 8;
+ } else {
+ fat_sector = FAT_getblk(sb, sec);
+ if (!fat_sector)
+ return -1;
+
+ fat_entry = &fat_sector[off];
+ _content = GET16(fat_entry);
+ }
+
+ if (loc & 1)
+ _content >>= 4;
+
+ _content &= 0x00000FFF;
+
+ if (_content >= CLUSTER_16(0x0FF8)) {
+ *content = CLUSTER_32(~0);
+ return 0;
+ }
+ *content = CLUSTER_32(_content);
+ return 0;
+ } else if (p_fs->vol_type == FAT16) {
+ sec = p_fs->FAT1_start_sector +
+ (loc >> (p_bd->sector_size_bits - 1));
+ off = (loc << 1) & p_bd->sector_size_mask;
+
+ fat_sector = FAT_getblk(sb, sec);
+ if (!fat_sector)
+ return -1;
+
+ fat_entry = &fat_sector[off];
+
+ _content = GET16_A(fat_entry);
+
+ _content &= 0x0000FFFF;
+
+ if (_content >= CLUSTER_16(0xFFF8)) {
+ *content = CLUSTER_32(~0);
+ return 0;
+ }
+ *content = CLUSTER_32(_content);
+ return 0;
+ } else if (p_fs->vol_type == FAT32) {
+ sec = p_fs->FAT1_start_sector +
+ (loc >> (p_bd->sector_size_bits - 2));
+ off = (loc << 2) & p_bd->sector_size_mask;
+
+ fat_sector = FAT_getblk(sb, sec);
+ if (!fat_sector)
+ return -1;
+
+ fat_entry = &fat_sector[off];
+
+ _content = GET32_A(fat_entry);
+
+ _content &= 0x0FFFFFFF;
+
+ if (_content >= CLUSTER_32(0x0FFFFFF8)) {
+ *content = CLUSTER_32(~0);
+ return 0;
+ }
+ *content = CLUSTER_32(_content);
+ return 0;
+ } else if (p_fs->vol_type == EXFAT) {
+ sec = p_fs->FAT1_start_sector +
+ (loc >> (p_bd->sector_size_bits - 2));
+ off = (loc << 2) & p_bd->sector_size_mask;
+
+ fat_sector = FAT_getblk(sb, sec);
+ if (!fat_sector)
+ return -1;
+
+ fat_entry = &fat_sector[off];
+ _content = GET32_A(fat_entry);
+
+ if (_content >= CLUSTER_32(0xFFFFFFF8)) {
+ *content = CLUSTER_32(~0);
+ return 0;
+ }
+ *content = CLUSTER_32(_content);
+ return 0;
+ }
+
+ /* Unknown volume type, throw in the towel and go home */
+ *content = CLUSTER_32(~0);
+ return 0;
+}
+
+/* in : sb, loc
+ * out: content
+ * returns 0 on success
+ * -1 on error
+ */
+int FAT_read(struct super_block *sb, u32 loc, u32 *content)
+{
+ s32 ret;
+
+ down(&f_sem);
+ ret = __FAT_read(sb, loc, content);
+ up(&f_sem);
+
+ return ret;
+}
+
+static s32 __FAT_write(struct super_block *sb, u32 loc, u32 content)
+{
+ s32 off;
+ sector_t sec;
+ u8 *fat_sector, *fat_entry;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ if (p_fs->vol_type == FAT12) {
+ content &= 0x00000FFF;
+
+ sec = p_fs->FAT1_start_sector +
+ ((loc + (loc >> 1)) >> p_bd->sector_size_bits);
+ off = (loc + (loc >> 1)) & p_bd->sector_size_mask;
+
+ fat_sector = FAT_getblk(sb, sec);
+ if (!fat_sector)
+ return -1;
+
+ if (loc & 1) { /* odd */
+ content <<= 4;
+
+ if (off == (p_bd->sector_size - 1)) {
+ fat_sector[off] = (u8)(content |
+ (fat_sector[off] &
+ 0x0F));
+ FAT_modify(sb, sec);
+
+ fat_sector = FAT_getblk(sb, ++sec);
+ if (!fat_sector)
+ return -1;
+
+ fat_sector[0] = (u8)(content >> 8);
+ } else {
+ fat_entry = &fat_sector[off];
+ content |= GET16(fat_entry) & 0x000F;
+
+ SET16(fat_entry, content);
+ }
+ } else { /* even */
+ fat_sector[off] = (u8)(content);
+
+ if (off == (p_bd->sector_size - 1)) {
+ fat_sector[off] = (u8)(content);
+ FAT_modify(sb, sec);
+
+ fat_sector = FAT_getblk(sb, ++sec);
+ fat_sector[0] = (u8)((fat_sector[0] & 0xF0) |
+ (content >> 8));
+ } else {
+ fat_entry = &fat_sector[off];
+ content |= GET16(fat_entry) & 0xF000;
+
+ SET16(fat_entry, content);
+ }
+ }
+ }
+
+ else if (p_fs->vol_type == FAT16) {
+ content &= 0x0000FFFF;
+
+ sec = p_fs->FAT1_start_sector + (loc >>
+ (p_bd->sector_size_bits - 1));
+ off = (loc << 1) & p_bd->sector_size_mask;
+
+ fat_sector = FAT_getblk(sb, sec);
+ if (!fat_sector)
+ return -1;
+
+ fat_entry = &fat_sector[off];
+
+ SET16_A(fat_entry, content);
+ } else if (p_fs->vol_type == FAT32) {
+ content &= 0x0FFFFFFF;
+
+ sec = p_fs->FAT1_start_sector + (loc >>
+ (p_bd->sector_size_bits - 2));
+ off = (loc << 2) & p_bd->sector_size_mask;
+
+ fat_sector = FAT_getblk(sb, sec);
+ if (!fat_sector)
+ return -1;
+
+ fat_entry = &fat_sector[off];
+
+ content |= GET32_A(fat_entry) & 0xF0000000;
+
+ SET32_A(fat_entry, content);
+ } else { /* p_fs->vol_type == EXFAT */
+ sec = p_fs->FAT1_start_sector + (loc >>
+ (p_bd->sector_size_bits - 2));
+ off = (loc << 2) & p_bd->sector_size_mask;
+
+ fat_sector = FAT_getblk(sb, sec);
+ if (!fat_sector)
+ return -1;
+
+ fat_entry = &fat_sector[off];
+
+ SET32_A(fat_entry, content);
+ }
+
+ FAT_modify(sb, sec);
+ return 0;
+}
+
+int FAT_write(struct super_block *sb, u32 loc, u32 content)
+{
+ s32 ret;
+
+ down(&f_sem);
+ ret = __FAT_write(sb, loc, content);
+ up(&f_sem);
+
+ return ret;
+}
+
+u8 *FAT_getblk(struct super_block *sb, sector_t sec)
+{
+ struct buf_cache_t *bp;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ bp = FAT_cache_find(sb, sec);
+ if (bp) {
+ move_to_mru(bp, &p_fs->FAT_cache_lru_list);
+ return bp->buf_bh->b_data;
+ }
+
+ bp = FAT_cache_get(sb, sec);
+
+ FAT_cache_remove_hash(bp);
+
+ bp->drv = p_fs->drv;
+ bp->sec = sec;
+ bp->flag = 0;
+
+ FAT_cache_insert_hash(sb, bp);
+
+ if (sector_read(sb, sec, &bp->buf_bh, 1) != FFS_SUCCESS) {
+ FAT_cache_remove_hash(bp);
+ bp->drv = -1;
+ bp->sec = ~0;
+ bp->flag = 0;
+ bp->buf_bh = NULL;
+
+ move_to_lru(bp, &p_fs->FAT_cache_lru_list);
+ return NULL;
+ }
+
+ return bp->buf_bh->b_data;
+}
+
+void FAT_modify(struct super_block *sb, sector_t sec)
+{
+ struct buf_cache_t *bp;
+
+ bp = FAT_cache_find(sb, sec);
+ if (bp)
+ sector_write(sb, sec, bp->buf_bh, 0);
+}
+
+void FAT_release_all(struct super_block *sb)
+{
+ struct buf_cache_t *bp;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ down(&f_sem);
+
+ bp = p_fs->FAT_cache_lru_list.next;
+ while (bp != &p_fs->FAT_cache_lru_list) {
+ if (bp->drv == p_fs->drv) {
+ bp->drv = -1;
+ bp->sec = ~0;
+ bp->flag = 0;
+
+ if (bp->buf_bh) {
+ __brelse(bp->buf_bh);
+ bp->buf_bh = NULL;
+ }
+ }
+ bp = bp->next;
+ }
+
+ up(&f_sem);
+}
+
+void FAT_sync(struct super_block *sb)
+{
+ struct buf_cache_t *bp;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ down(&f_sem);
+
+ bp = p_fs->FAT_cache_lru_list.next;
+ while (bp != &p_fs->FAT_cache_lru_list) {
+ if ((bp->drv == p_fs->drv) && (bp->flag & DIRTYBIT)) {
+ sync_dirty_buffer(bp->buf_bh);
+ bp->flag &= ~(DIRTYBIT);
+ }
+ bp = bp->next;
+ }
+
+ up(&f_sem);
+}
+
+static struct buf_cache_t *buf_cache_find(struct super_block *sb, sector_t sec)
+{
+ s32 off;
+ struct buf_cache_t *bp, *hp;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ off = (sec + (sec >> p_fs->sectors_per_clu_bits)) &
+ (BUF_CACHE_HASH_SIZE - 1);
+
+ hp = &p_fs->buf_cache_hash_list[off];
+ for (bp = hp->hash_next; bp != hp; bp = bp->hash_next) {
+ if ((bp->drv == p_fs->drv) && (bp->sec == sec)) {
+ touch_buffer(bp->buf_bh);
+ return bp;
+ }
+ }
+ return NULL;
+}
+
+static struct buf_cache_t *buf_cache_get(struct super_block *sb, sector_t sec)
+{
+ struct buf_cache_t *bp;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ bp = p_fs->buf_cache_lru_list.prev;
+ while (bp->flag & LOCKBIT)
+ bp = bp->prev;
+
+ move_to_mru(bp, &p_fs->buf_cache_lru_list);
+ return bp;
+}
+
+static u8 *__buf_getblk(struct super_block *sb, sector_t sec)
+{
+ struct buf_cache_t *bp;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ bp = buf_cache_find(sb, sec);
+ if (bp) {
+ move_to_mru(bp, &p_fs->buf_cache_lru_list);
+ return bp->buf_bh->b_data;
+ }
+
+ bp = buf_cache_get(sb, sec);
+
+ buf_cache_remove_hash(bp);
+
+ bp->drv = p_fs->drv;
+ bp->sec = sec;
+ bp->flag = 0;
+
+ buf_cache_insert_hash(sb, bp);
+
+ if (sector_read(sb, sec, &bp->buf_bh, 1) != FFS_SUCCESS) {
+ buf_cache_remove_hash(bp);
+ bp->drv = -1;
+ bp->sec = ~0;
+ bp->flag = 0;
+ bp->buf_bh = NULL;
+
+ move_to_lru(bp, &p_fs->buf_cache_lru_list);
+ return NULL;
+ }
+
+ return bp->buf_bh->b_data;
+}
+
+u8 *buf_getblk(struct super_block *sb, sector_t sec)
+{
+ u8 *buf;
+
+ down(&b_sem);
+ buf = __buf_getblk(sb, sec);
+ up(&b_sem);
+
+ return buf;
+}
+
+void buf_modify(struct super_block *sb, sector_t sec)
+{
+ struct buf_cache_t *bp;
+
+ down(&b_sem);
+
+ bp = buf_cache_find(sb, sec);
+ if (likely(bp))
+ sector_write(sb, sec, bp->buf_bh, 0);
+
+ WARN(!bp, "[EXFAT] failed to find buffer_cache(sector:%llu).\n",
+ (unsigned long long)sec);
+
+ up(&b_sem);
+}
+
+void buf_lock(struct super_block *sb, sector_t sec)
+{
+ struct buf_cache_t *bp;
+
+ down(&b_sem);
+
+ bp = buf_cache_find(sb, sec);
+ if (likely(bp))
+ bp->flag |= LOCKBIT;
+
+ WARN(!bp, "[EXFAT] failed to find buffer_cache(sector:%llu).\n",
+ (unsigned long long)sec);
+
+ up(&b_sem);
+}
+
+void buf_unlock(struct super_block *sb, sector_t sec)
+{
+ struct buf_cache_t *bp;
+
+ down(&b_sem);
+
+ bp = buf_cache_find(sb, sec);
+ if (likely(bp))
+ bp->flag &= ~(LOCKBIT);
+
+ WARN(!bp, "[EXFAT] failed to find buffer_cache(sector:%llu).\n",
+ (unsigned long long)sec);
+
+ up(&b_sem);
+}
+
+void buf_release(struct super_block *sb, sector_t sec)
+{
+ struct buf_cache_t *bp;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ down(&b_sem);
+
+ bp = buf_cache_find(sb, sec);
+ if (likely(bp)) {
+ bp->drv = -1;
+ bp->sec = ~0;
+ bp->flag = 0;
+
+ if (bp->buf_bh) {
+ __brelse(bp->buf_bh);
+ bp->buf_bh = NULL;
+ }
+
+ move_to_lru(bp, &p_fs->buf_cache_lru_list);
+ }
+
+ up(&b_sem);
+}
+
+void buf_release_all(struct super_block *sb)
+{
+ struct buf_cache_t *bp;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ down(&b_sem);
+
+ bp = p_fs->buf_cache_lru_list.next;
+ while (bp != &p_fs->buf_cache_lru_list) {
+ if (bp->drv == p_fs->drv) {
+ bp->drv = -1;
+ bp->sec = ~0;
+ bp->flag = 0;
+
+ if (bp->buf_bh) {
+ __brelse(bp->buf_bh);
+ bp->buf_bh = NULL;
+ }
+ }
+ bp = bp->next;
+ }
+
+ up(&b_sem);
+}
+
+void buf_sync(struct super_block *sb)
+{
+ struct buf_cache_t *bp;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ down(&b_sem);
+
+ bp = p_fs->buf_cache_lru_list.next;
+ while (bp != &p_fs->buf_cache_lru_list) {
+ if ((bp->drv == p_fs->drv) && (bp->flag & DIRTYBIT)) {
+ sync_dirty_buffer(bp->buf_bh);
+ bp->flag &= ~(DIRTYBIT);
+ }
+ bp = bp->next;
+ }
+
+ up(&b_sem);
+}
diff --git a/drivers/staging/exfat/exfat_core.c b/drivers/staging/exfat/exfat_core.c
new file mode 100644
index 0000000000..9f76ca175c
--- /dev/null
+++ b/drivers/staging/exfat/exfat_core.c
@@ -0,0 +1,3704 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
+ */
+
+#include <linux/types.h>
+#include <linux/buffer_head.h>
+#include <linux/fs.h>
+#include <linux/mutex.h>
+#include <linux/blkdev.h>
+#include <linux/slab.h>
+#include "exfat.h"
+
+
+static void __set_sb_dirty(struct super_block *sb)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+
+ sbi->s_dirt = 1;
+}
+
+static u8 name_buf[MAX_PATH_LENGTH * MAX_CHARSET_SIZE];
+
+static char *reserved_names[] = {
+ "AUX ", "CON ", "NUL ", "PRN ",
+ "COM1 ", "COM2 ", "COM3 ", "COM4 ",
+ "COM5 ", "COM6 ", "COM7 ", "COM8 ", "COM9 ",
+ "LPT1 ", "LPT2 ", "LPT3 ", "LPT4 ",
+ "LPT5 ", "LPT6 ", "LPT7 ", "LPT8 ", "LPT9 ",
+ NULL
+};
+
+static u8 free_bit[] = {
+ 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, /* 0 ~ 19 */
+ 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, 0, 1, 0, 2, 0, 1, 0, 3, /* 20 ~ 39 */
+ 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, /* 40 ~ 59 */
+ 0, 1, 0, 6, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, /* 60 ~ 79 */
+ 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, 0, 1, 0, 2, /* 80 ~ 99 */
+ 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, /* 100 ~ 119 */
+ 0, 1, 0, 2, 0, 1, 0, 7, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, /* 120 ~ 139 */
+ 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, /* 140 ~ 159 */
+ 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, /* 160 ~ 179 */
+ 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 6, 0, 1, 0, 2, 0, 1, 0, 3, /* 180 ~ 199 */
+ 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, /* 200 ~ 219 */
+ 0, 1, 0, 5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, /* 220 ~ 239 */
+ 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0 /* 240 ~ 254 */
+};
+
+static u8 used_bit[] = {
+ 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, 1, 2, 2, 3, /* 0 ~ 19 */
+ 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 1, 2, 2, 3, 2, 3, 3, 4, /* 20 ~ 39 */
+ 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, /* 40 ~ 59 */
+ 4, 5, 5, 6, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, /* 60 ~ 79 */
+ 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 2, 3, 3, 4, /* 80 ~ 99 */
+ 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, /* 100 ~ 119 */
+ 4, 5, 5, 6, 5, 6, 6, 7, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, /* 120 ~ 139 */
+ 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, /* 140 ~ 159 */
+ 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, /* 160 ~ 179 */
+ 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 2, 3, 3, 4, 3, 4, 4, 5, /* 180 ~ 199 */
+ 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, /* 200 ~ 219 */
+ 5, 6, 6, 7, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, /* 220 ~ 239 */
+ 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8 /* 240 ~ 255 */
+};
+
+#define BITMAP_LOC(v) ((v) >> 3)
+#define BITMAP_SHIFT(v) ((v) & 0x07)
+
+static inline s32 exfat_bitmap_test(u8 *bitmap, int i)
+{
+ u8 data;
+
+ data = bitmap[BITMAP_LOC(i)];
+ if ((data >> BITMAP_SHIFT(i)) & 0x01)
+ return 1;
+ return 0;
+}
+
+static inline void exfat_bitmap_set(u8 *bitmap, int i)
+{
+ bitmap[BITMAP_LOC(i)] |= (0x01 << BITMAP_SHIFT(i));
+}
+
+static inline void exfat_bitmap_clear(u8 *bitmap, int i)
+{
+ bitmap[BITMAP_LOC(i)] &= ~(0x01 << BITMAP_SHIFT(i));
+}
+
+/*
+ * File System Management Functions
+ */
+
+void fs_set_vol_flags(struct super_block *sb, u32 new_flag)
+{
+ struct pbr_sector_t *p_pbr;
+ struct bpbex_t *p_bpb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ if (p_fs->vol_flag == new_flag)
+ return;
+
+ p_fs->vol_flag = new_flag;
+
+ if (p_fs->vol_type == EXFAT) {
+ if (p_fs->pbr_bh == NULL) {
+ if (sector_read(sb, p_fs->PBR_sector,
+ &p_fs->pbr_bh, 1) != FFS_SUCCESS)
+ return;
+ }
+
+ p_pbr = (struct pbr_sector_t *)p_fs->pbr_bh->b_data;
+ p_bpb = (struct bpbex_t *)p_pbr->bpb;
+ SET16(p_bpb->vol_flags, (u16)new_flag);
+
+ /* XXX duyoung
+ * what can we do here? (cuz fs_set_vol_flags() is void)
+ */
+ if ((new_flag == VOL_DIRTY) && (!buffer_dirty(p_fs->pbr_bh)))
+ sector_write(sb, p_fs->PBR_sector, p_fs->pbr_bh, 1);
+ else
+ sector_write(sb, p_fs->PBR_sector, p_fs->pbr_bh, 0);
+ }
+}
+
+void fs_error(struct super_block *sb)
+{
+ struct exfat_mount_options *opts = &EXFAT_SB(sb)->options;
+
+ if (opts->errors == EXFAT_ERRORS_PANIC) {
+ panic("[EXFAT] Filesystem panic from previous error\n");
+ } else if ((opts->errors == EXFAT_ERRORS_RO) && !sb_rdonly(sb)) {
+ sb->s_flags |= SB_RDONLY;
+ pr_err("[EXFAT] Filesystem has been set read-only\n");
+ }
+}
+
+/*
+ * Cluster Management Functions
+ */
+
+s32 clear_cluster(struct super_block *sb, u32 clu)
+{
+ sector_t s, n;
+ s32 ret = FFS_SUCCESS;
+ struct buffer_head *tmp_bh = NULL;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ if (clu == CLUSTER_32(0)) { /* FAT16 root_dir */
+ s = p_fs->root_start_sector;
+ n = p_fs->data_start_sector;
+ } else {
+ s = START_SECTOR(clu);
+ n = s + p_fs->sectors_per_clu;
+ }
+
+ for (; s < n; s++) {
+ ret = sector_read(sb, s, &tmp_bh, 0);
+ if (ret != FFS_SUCCESS)
+ return ret;
+
+ memset((char *)tmp_bh->b_data, 0x0, p_bd->sector_size);
+ ret = sector_write(sb, s, tmp_bh, 0);
+ if (ret != FFS_SUCCESS)
+ break;
+ }
+
+ brelse(tmp_bh);
+ return ret;
+}
+
+s32 fat_alloc_cluster(struct super_block *sb, s32 num_alloc,
+ struct chain_t *p_chain)
+{
+ int i, num_clusters = 0;
+ u32 new_clu, last_clu = CLUSTER_32(~0), read_clu;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ new_clu = p_chain->dir;
+ if (new_clu == CLUSTER_32(~0))
+ new_clu = p_fs->clu_srch_ptr;
+ else if (new_clu >= p_fs->num_clusters)
+ new_clu = 2;
+
+ __set_sb_dirty(sb);
+
+ p_chain->dir = CLUSTER_32(~0);
+
+ for (i = 2; i < p_fs->num_clusters; i++) {
+ if (FAT_read(sb, new_clu, &read_clu) != 0)
+ return -1;
+
+ if (read_clu == CLUSTER_32(0)) {
+ if (FAT_write(sb, new_clu, CLUSTER_32(~0)) < 0)
+ return -1;
+ num_clusters++;
+
+ if (p_chain->dir == CLUSTER_32(~0)) {
+ p_chain->dir = new_clu;
+ } else {
+ if (FAT_write(sb, last_clu, new_clu) < 0)
+ return -1;
+ }
+
+ last_clu = new_clu;
+
+ if ((--num_alloc) == 0) {
+ p_fs->clu_srch_ptr = new_clu;
+ if (p_fs->used_clusters != (u32) ~0)
+ p_fs->used_clusters += num_clusters;
+
+ return num_clusters;
+ }
+ }
+ if ((++new_clu) >= p_fs->num_clusters)
+ new_clu = 2;
+ }
+
+ p_fs->clu_srch_ptr = new_clu;
+ if (p_fs->used_clusters != (u32) ~0)
+ p_fs->used_clusters += num_clusters;
+
+ return num_clusters;
+}
+
+s32 exfat_alloc_cluster(struct super_block *sb, s32 num_alloc,
+ struct chain_t *p_chain)
+{
+ s32 num_clusters = 0;
+ u32 hint_clu, new_clu, last_clu = CLUSTER_32(~0);
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ hint_clu = p_chain->dir;
+ if (hint_clu == CLUSTER_32(~0)) {
+ hint_clu = test_alloc_bitmap(sb, p_fs->clu_srch_ptr-2);
+ if (hint_clu == CLUSTER_32(~0))
+ return 0;
+ } else if (hint_clu >= p_fs->num_clusters) {
+ hint_clu = 2;
+ p_chain->flags = 0x01;
+ }
+
+ __set_sb_dirty(sb);
+
+ p_chain->dir = CLUSTER_32(~0);
+
+ while ((new_clu = test_alloc_bitmap(sb, hint_clu-2)) != CLUSTER_32(~0)) {
+ if (new_clu != hint_clu) {
+ if (p_chain->flags == 0x03) {
+ exfat_chain_cont_cluster(sb, p_chain->dir,
+ num_clusters);
+ p_chain->flags = 0x01;
+ }
+ }
+
+ if (set_alloc_bitmap(sb, new_clu-2) != FFS_SUCCESS)
+ return -1;
+
+ num_clusters++;
+
+ if (p_chain->flags == 0x01) {
+ if (FAT_write(sb, new_clu, CLUSTER_32(~0)) < 0)
+ return -1;
+ }
+
+ if (p_chain->dir == CLUSTER_32(~0)) {
+ p_chain->dir = new_clu;
+ } else {
+ if (p_chain->flags == 0x01) {
+ if (FAT_write(sb, last_clu, new_clu) < 0)
+ return -1;
+ }
+ }
+ last_clu = new_clu;
+
+ if ((--num_alloc) == 0) {
+ p_fs->clu_srch_ptr = hint_clu;
+ if (p_fs->used_clusters != (u32) ~0)
+ p_fs->used_clusters += num_clusters;
+
+ p_chain->size += num_clusters;
+ return num_clusters;
+ }
+
+ hint_clu = new_clu + 1;
+ if (hint_clu >= p_fs->num_clusters) {
+ hint_clu = 2;
+
+ if (p_chain->flags == 0x03) {
+ exfat_chain_cont_cluster(sb, p_chain->dir,
+ num_clusters);
+ p_chain->flags = 0x01;
+ }
+ }
+ }
+
+ p_fs->clu_srch_ptr = hint_clu;
+ if (p_fs->used_clusters != (u32) ~0)
+ p_fs->used_clusters += num_clusters;
+
+ p_chain->size += num_clusters;
+ return num_clusters;
+}
+
+void fat_free_cluster(struct super_block *sb, struct chain_t *p_chain,
+ s32 do_relse)
+{
+ s32 num_clusters = 0;
+ u32 clu, prev;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ int i;
+ sector_t sector;
+
+ if ((p_chain->dir == CLUSTER_32(0)) || (p_chain->dir == CLUSTER_32(~0)))
+ return;
+ __set_sb_dirty(sb);
+ clu = p_chain->dir;
+
+ if (p_chain->size <= 0)
+ return;
+
+ do {
+ if (p_fs->dev_ejected)
+ break;
+
+ if (do_relse) {
+ sector = START_SECTOR(clu);
+ for (i = 0; i < p_fs->sectors_per_clu; i++)
+ buf_release(sb, sector+i);
+ }
+
+ prev = clu;
+ if (FAT_read(sb, clu, &clu) == -1)
+ break;
+
+ if (FAT_write(sb, prev, CLUSTER_32(0)) < 0)
+ break;
+ num_clusters++;
+
+ } while (clu != CLUSTER_32(~0));
+
+ if (p_fs->used_clusters != (u32) ~0)
+ p_fs->used_clusters -= num_clusters;
+}
+
+void exfat_free_cluster(struct super_block *sb, struct chain_t *p_chain,
+ s32 do_relse)
+{
+ s32 num_clusters = 0;
+ u32 clu;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ int i;
+ sector_t sector;
+
+ if ((p_chain->dir == CLUSTER_32(0)) || (p_chain->dir == CLUSTER_32(~0)))
+ return;
+
+ if (p_chain->size <= 0) {
+ pr_err("[EXFAT] free_cluster : skip free-req clu:%u, because of zero-size truncation\n",
+ p_chain->dir);
+ return;
+ }
+
+ __set_sb_dirty(sb);
+ clu = p_chain->dir;
+
+ if (p_chain->flags == 0x03) {
+ do {
+ if (do_relse) {
+ sector = START_SECTOR(clu);
+ for (i = 0; i < p_fs->sectors_per_clu; i++)
+ buf_release(sb, sector+i);
+ }
+
+ if (clr_alloc_bitmap(sb, clu-2) != FFS_SUCCESS)
+ break;
+ clu++;
+
+ num_clusters++;
+ } while (num_clusters < p_chain->size);
+ } else {
+ do {
+ if (p_fs->dev_ejected)
+ break;
+
+ if (do_relse) {
+ sector = START_SECTOR(clu);
+ for (i = 0; i < p_fs->sectors_per_clu; i++)
+ buf_release(sb, sector+i);
+ }
+
+ if (clr_alloc_bitmap(sb, clu-2) != FFS_SUCCESS)
+ break;
+
+ if (FAT_read(sb, clu, &clu) == -1)
+ break;
+ num_clusters++;
+ } while ((clu != CLUSTER_32(0)) && (clu != CLUSTER_32(~0)));
+ }
+
+ if (p_fs->used_clusters != (u32) ~0)
+ p_fs->used_clusters -= num_clusters;
+}
+
+u32 find_last_cluster(struct super_block *sb, struct chain_t *p_chain)
+{
+ u32 clu, next;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ clu = p_chain->dir;
+
+ if (p_chain->flags == 0x03) {
+ clu += p_chain->size - 1;
+ } else {
+ while ((FAT_read(sb, clu, &next) == 0) &&
+ (next != CLUSTER_32(~0))) {
+ if (p_fs->dev_ejected)
+ break;
+ clu = next;
+ }
+ }
+
+ return clu;
+}
+
+s32 count_num_clusters(struct super_block *sb, struct chain_t *p_chain)
+{
+ int i, count = 0;
+ u32 clu;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ if ((p_chain->dir == CLUSTER_32(0)) || (p_chain->dir == CLUSTER_32(~0)))
+ return 0;
+
+ clu = p_chain->dir;
+
+ if (p_chain->flags == 0x03) {
+ count = p_chain->size;
+ } else {
+ for (i = 2; i < p_fs->num_clusters; i++) {
+ count++;
+ if (FAT_read(sb, clu, &clu) != 0)
+ return 0;
+ if (clu == CLUSTER_32(~0))
+ break;
+ }
+ }
+
+ return count;
+}
+
+s32 fat_count_used_clusters(struct super_block *sb)
+{
+ int i, count = 0;
+ u32 clu;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ for (i = 2; i < p_fs->num_clusters; i++) {
+ if (FAT_read(sb, i, &clu) != 0)
+ break;
+ if (clu != CLUSTER_32(0))
+ count++;
+ }
+
+ return count;
+}
+
+s32 exfat_count_used_clusters(struct super_block *sb)
+{
+ int i, map_i, map_b, count = 0;
+ u8 k;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ map_i = map_b = 0;
+
+ for (i = 2; i < p_fs->num_clusters; i += 8) {
+ k = *(((u8 *) p_fs->vol_amap[map_i]->b_data) + map_b);
+ count += used_bit[k];
+
+ if ((++map_b) >= p_bd->sector_size) {
+ map_i++;
+ map_b = 0;
+ }
+ }
+
+ return count;
+}
+
+void exfat_chain_cont_cluster(struct super_block *sb, u32 chain, s32 len)
+{
+ if (len == 0)
+ return;
+
+ while (len > 1) {
+ if (FAT_write(sb, chain, chain+1) < 0)
+ break;
+ chain++;
+ len--;
+ }
+ FAT_write(sb, chain, CLUSTER_32(~0));
+}
+
+/*
+ * Allocation Bitmap Management Functions
+ */
+
+s32 load_alloc_bitmap(struct super_block *sb)
+{
+ int i, j, ret;
+ u32 map_size;
+ u32 type;
+ sector_t sector;
+ struct chain_t clu;
+ struct bmap_dentry_t *ep;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ clu.dir = p_fs->root_dir;
+ clu.flags = 0x01;
+
+ while (clu.dir != CLUSTER_32(~0)) {
+ if (p_fs->dev_ejected)
+ break;
+
+ for (i = 0; i < p_fs->dentries_per_clu; i++) {
+ ep = (struct bmap_dentry_t *)get_entry_in_dir(sb, &clu,
+ i, NULL);
+ if (!ep)
+ return FFS_MEDIAERR;
+
+ type = p_fs->fs_func->get_entry_type((struct dentry_t *)ep);
+
+ if (type == TYPE_UNUSED)
+ break;
+ if (type != TYPE_BITMAP)
+ continue;
+
+ if (ep->flags == 0x0) {
+ p_fs->map_clu = GET32_A(ep->start_clu);
+ map_size = (u32) GET64_A(ep->size);
+
+ p_fs->map_sectors = ((map_size-1) >> p_bd->sector_size_bits) + 1;
+
+ p_fs->vol_amap = kmalloc_array(p_fs->map_sectors,
+ sizeof(struct buffer_head *),
+ GFP_KERNEL);
+ if (p_fs->vol_amap == NULL)
+ return FFS_MEMORYERR;
+
+ sector = START_SECTOR(p_fs->map_clu);
+
+ for (j = 0; j < p_fs->map_sectors; j++) {
+ p_fs->vol_amap[j] = NULL;
+ ret = sector_read(sb, sector+j, &(p_fs->vol_amap[j]), 1);
+ if (ret != FFS_SUCCESS) {
+ /* release all buffers and free vol_amap */
+ i = 0;
+ while (i < j)
+ brelse(p_fs->vol_amap[i++]);
+
+ kfree(p_fs->vol_amap);
+ p_fs->vol_amap = NULL;
+ return ret;
+ }
+ }
+
+ p_fs->pbr_bh = NULL;
+ return FFS_SUCCESS;
+ }
+ }
+
+ if (FAT_read(sb, clu.dir, &clu.dir) != 0)
+ return FFS_MEDIAERR;
+ }
+
+ return FFS_FORMATERR;
+}
+
+void free_alloc_bitmap(struct super_block *sb)
+{
+ int i;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ brelse(p_fs->pbr_bh);
+
+ for (i = 0; i < p_fs->map_sectors; i++)
+ __brelse(p_fs->vol_amap[i]);
+
+ kfree(p_fs->vol_amap);
+ p_fs->vol_amap = NULL;
+}
+
+s32 set_alloc_bitmap(struct super_block *sb, u32 clu)
+{
+ int i, b;
+ sector_t sector;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ i = clu >> (p_bd->sector_size_bits + 3);
+ b = clu & ((p_bd->sector_size << 3) - 1);
+
+ sector = START_SECTOR(p_fs->map_clu) + i;
+
+ exfat_bitmap_set((u8 *) p_fs->vol_amap[i]->b_data, b);
+
+ return sector_write(sb, sector, p_fs->vol_amap[i], 0);
+}
+
+s32 clr_alloc_bitmap(struct super_block *sb, u32 clu)
+{
+ int i, b;
+ sector_t sector;
+#ifdef CONFIG_EXFAT_DISCARD
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ struct exfat_mount_options *opts = &sbi->options;
+ int ret;
+#endif /* CONFIG_EXFAT_DISCARD */
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ i = clu >> (p_bd->sector_size_bits + 3);
+ b = clu & ((p_bd->sector_size << 3) - 1);
+
+ sector = START_SECTOR(p_fs->map_clu) + i;
+
+ exfat_bitmap_clear((u8 *) p_fs->vol_amap[i]->b_data, b);
+
+ return sector_write(sb, sector, p_fs->vol_amap[i], 0);
+
+#ifdef CONFIG_EXFAT_DISCARD
+ if (opts->discard) {
+ ret = sb_issue_discard(sb, START_SECTOR(clu),
+ (1 << p_fs->sectors_per_clu_bits),
+ GFP_NOFS, 0);
+ if (ret == -EOPNOTSUPP) {
+ pr_warn("discard not supported by device, disabling");
+ opts->discard = 0;
+ }
+ }
+#endif /* CONFIG_EXFAT_DISCARD */
+}
+
+u32 test_alloc_bitmap(struct super_block *sb, u32 clu)
+{
+ int i, map_i, map_b;
+ u32 clu_base, clu_free;
+ u8 k, clu_mask;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ clu_base = (clu & ~(0x7)) + 2;
+ clu_mask = (1 << (clu - clu_base + 2)) - 1;
+
+ map_i = clu >> (p_bd->sector_size_bits + 3);
+ map_b = (clu >> 3) & p_bd->sector_size_mask;
+
+ for (i = 2; i < p_fs->num_clusters; i += 8) {
+ k = *(((u8 *) p_fs->vol_amap[map_i]->b_data) + map_b);
+ if (clu_mask > 0) {
+ k |= clu_mask;
+ clu_mask = 0;
+ }
+ if (k < 0xFF) {
+ clu_free = clu_base + free_bit[k];
+ if (clu_free < p_fs->num_clusters)
+ return clu_free;
+ }
+ clu_base += 8;
+
+ if (((++map_b) >= p_bd->sector_size) ||
+ (clu_base >= p_fs->num_clusters)) {
+ if ((++map_i) >= p_fs->map_sectors) {
+ clu_base = 2;
+ map_i = 0;
+ }
+ map_b = 0;
+ }
+ }
+
+ return CLUSTER_32(~0);
+}
+
+void sync_alloc_bitmap(struct super_block *sb)
+{
+ int i;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ if (p_fs->vol_amap == NULL)
+ return;
+
+ for (i = 0; i < p_fs->map_sectors; i++)
+ sync_dirty_buffer(p_fs->vol_amap[i]);
+}
+
+/*
+ * Upcase table Management Functions
+ */
+static s32 __load_upcase_table(struct super_block *sb, sector_t sector,
+ u32 num_sectors, u32 utbl_checksum)
+{
+ int i, ret = FFS_ERROR;
+ u32 j;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+ struct buffer_head *tmp_bh = NULL;
+ sector_t end_sector = num_sectors + sector;
+
+ u8 skip = FALSE;
+ u32 index = 0;
+ u16 uni = 0;
+ u16 **upcase_table;
+
+ u32 checksum = 0;
+
+ upcase_table = p_fs->vol_utbl = kmalloc(UTBL_COL_COUNT * sizeof(u16 *),
+ GFP_KERNEL);
+ if (upcase_table == NULL)
+ return FFS_MEMORYERR;
+ memset(upcase_table, 0, UTBL_COL_COUNT * sizeof(u16 *));
+
+ while (sector < end_sector) {
+ ret = sector_read(sb, sector, &tmp_bh, 1);
+ if (ret != FFS_SUCCESS) {
+ pr_debug("sector read (0x%llX)fail\n",
+ (unsigned long long)sector);
+ goto error;
+ }
+ sector++;
+
+ for (i = 0; i < p_bd->sector_size && index <= 0xFFFF; i += 2) {
+ uni = GET16(((u8 *) tmp_bh->b_data)+i);
+
+ checksum = ((checksum & 1) ? 0x80000000 : 0) +
+ (checksum >> 1) + *(((u8 *)tmp_bh->b_data) +
+ i);
+ checksum = ((checksum & 1) ? 0x80000000 : 0) +
+ (checksum >> 1) + *(((u8 *)tmp_bh->b_data) +
+ (i + 1));
+
+ if (skip) {
+ pr_debug("skip from 0x%X ", index);
+ index += uni;
+ pr_debug("to 0x%X (amount of 0x%X)\n",
+ index, uni);
+ skip = FALSE;
+ } else if (uni == index)
+ index++;
+ else if (uni == 0xFFFF)
+ skip = TRUE;
+ else { /* uni != index , uni != 0xFFFF */
+ u16 col_index = get_col_index(index);
+
+ if (upcase_table[col_index] == NULL) {
+ pr_debug("alloc = 0x%X\n", col_index);
+ upcase_table[col_index] = kmalloc_array(UTBL_ROW_COUNT,
+ sizeof(u16), GFP_KERNEL);
+ if (upcase_table[col_index] == NULL) {
+ ret = FFS_MEMORYERR;
+ goto error;
+ }
+
+ for (j = 0; j < UTBL_ROW_COUNT; j++)
+ upcase_table[col_index][j] = (col_index << LOW_INDEX_BIT) | j;
+ }
+
+ upcase_table[col_index][get_row_index(index)] = uni;
+ index++;
+ }
+ }
+ }
+ if (index >= 0xFFFF && utbl_checksum == checksum) {
+ if (tmp_bh)
+ brelse(tmp_bh);
+ return FFS_SUCCESS;
+ }
+ ret = FFS_ERROR;
+error:
+ if (tmp_bh)
+ brelse(tmp_bh);
+ free_upcase_table(sb);
+ return ret;
+}
+
+static s32 __load_default_upcase_table(struct super_block *sb)
+{
+ int i, ret = FFS_ERROR;
+ u32 j;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ u8 skip = FALSE;
+ u32 index = 0;
+ u16 uni = 0;
+ u16 **upcase_table;
+
+ upcase_table = p_fs->vol_utbl = kmalloc(UTBL_COL_COUNT * sizeof(u16 *),
+ GFP_KERNEL);
+ if (upcase_table == NULL)
+ return FFS_MEMORYERR;
+ memset(upcase_table, 0, UTBL_COL_COUNT * sizeof(u16 *));
+
+ for (i = 0; index <= 0xFFFF && i < NUM_UPCASE*2; i += 2) {
+ uni = GET16(uni_upcase + i);
+ if (skip) {
+ pr_debug("skip from 0x%X ", index);
+ index += uni;
+ pr_debug("to 0x%X (amount of 0x%X)\n", index, uni);
+ skip = FALSE;
+ } else if (uni == index)
+ index++;
+ else if (uni == 0xFFFF)
+ skip = TRUE;
+ else { /* uni != index , uni != 0xFFFF */
+ u16 col_index = get_col_index(index);
+
+ if (upcase_table[col_index] == NULL) {
+ pr_debug("alloc = 0x%X\n", col_index);
+ upcase_table[col_index] = kmalloc_array(UTBL_ROW_COUNT,
+ sizeof(u16),
+ GFP_KERNEL);
+ if (upcase_table[col_index] == NULL) {
+ ret = FFS_MEMORYERR;
+ goto error;
+ }
+
+ for (j = 0; j < UTBL_ROW_COUNT; j++)
+ upcase_table[col_index][j] = (col_index << LOW_INDEX_BIT) | j;
+ }
+
+ upcase_table[col_index][get_row_index(index)] = uni;
+ index++;
+ }
+ }
+
+ if (index >= 0xFFFF)
+ return FFS_SUCCESS;
+
+error:
+ /* FATAL error: default upcase table has error */
+ free_upcase_table(sb);
+ return ret;
+}
+
+s32 load_upcase_table(struct super_block *sb)
+{
+ int i;
+ u32 tbl_clu, tbl_size;
+ sector_t sector;
+ u32 type, num_sectors;
+ struct chain_t clu;
+ struct case_dentry_t *ep;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ clu.dir = p_fs->root_dir;
+ clu.flags = 0x01;
+
+ if (p_fs->dev_ejected)
+ return FFS_MEDIAERR;
+
+ while (clu.dir != CLUSTER_32(~0)) {
+ for (i = 0; i < p_fs->dentries_per_clu; i++) {
+ ep = (struct case_dentry_t *)get_entry_in_dir(sb, &clu,
+ i, NULL);
+ if (!ep)
+ return FFS_MEDIAERR;
+
+ type = p_fs->fs_func->get_entry_type((struct dentry_t *)ep);
+
+ if (type == TYPE_UNUSED)
+ break;
+ if (type != TYPE_UPCASE)
+ continue;
+
+ tbl_clu = GET32_A(ep->start_clu);
+ tbl_size = (u32) GET64_A(ep->size);
+
+ sector = START_SECTOR(tbl_clu);
+ num_sectors = ((tbl_size-1) >> p_bd->sector_size_bits) + 1;
+ if (__load_upcase_table(sb, sector, num_sectors,
+ GET32_A(ep->checksum)) != FFS_SUCCESS)
+ break;
+ return FFS_SUCCESS;
+ }
+ if (FAT_read(sb, clu.dir, &clu.dir) != 0)
+ return FFS_MEDIAERR;
+ }
+ /* load default upcase table */
+ return __load_default_upcase_table(sb);
+}
+
+void free_upcase_table(struct super_block *sb)
+{
+ u32 i;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ u16 **upcase_table;
+
+ upcase_table = p_fs->vol_utbl;
+ for (i = 0; i < UTBL_COL_COUNT; i++)
+ kfree(upcase_table[i]);
+
+ kfree(p_fs->vol_utbl);
+ p_fs->vol_utbl = NULL;
+}
+
+/*
+ * Directory Entry Management Functions
+ */
+
+u32 fat_get_entry_type(struct dentry_t *p_entry)
+{
+ struct dos_dentry_t *ep = (struct dos_dentry_t *) p_entry;
+
+ if (*(ep->name) == 0x0)
+ return TYPE_UNUSED;
+
+ else if (*(ep->name) == 0xE5)
+ return TYPE_DELETED;
+
+ else if (ep->attr == ATTR_EXTEND)
+ return TYPE_EXTEND;
+
+ else if ((ep->attr & (ATTR_SUBDIR|ATTR_VOLUME)) == ATTR_VOLUME)
+ return TYPE_VOLUME;
+
+ else if ((ep->attr & (ATTR_SUBDIR|ATTR_VOLUME)) == ATTR_SUBDIR)
+ return TYPE_DIR;
+
+ return TYPE_FILE;
+}
+
+u32 exfat_get_entry_type(struct dentry_t *p_entry)
+{
+ struct file_dentry_t *ep = (struct file_dentry_t *) p_entry;
+
+ if (ep->type == 0x0) {
+ return TYPE_UNUSED;
+ } else if (ep->type < 0x80) {
+ return TYPE_DELETED;
+ } else if (ep->type == 0x80) {
+ return TYPE_INVALID;
+ } else if (ep->type < 0xA0) {
+ if (ep->type == 0x81) {
+ return TYPE_BITMAP;
+ } else if (ep->type == 0x82) {
+ return TYPE_UPCASE;
+ } else if (ep->type == 0x83) {
+ return TYPE_VOLUME;
+ } else if (ep->type == 0x85) {
+ if (GET16_A(ep->attr) & ATTR_SUBDIR)
+ return TYPE_DIR;
+ else
+ return TYPE_FILE;
+ }
+ return TYPE_CRITICAL_PRI;
+ } else if (ep->type < 0xC0) {
+ if (ep->type == 0xA0)
+ return TYPE_GUID;
+ else if (ep->type == 0xA1)
+ return TYPE_PADDING;
+ else if (ep->type == 0xA2)
+ return TYPE_ACLTAB;
+ return TYPE_BENIGN_PRI;
+ } else if (ep->type < 0xE0) {
+ if (ep->type == 0xC0)
+ return TYPE_STREAM;
+ else if (ep->type == 0xC1)
+ return TYPE_EXTEND;
+ else if (ep->type == 0xC2)
+ return TYPE_ACL;
+ return TYPE_CRITICAL_SEC;
+ }
+
+ return TYPE_BENIGN_SEC;
+}
+
+void fat_set_entry_type(struct dentry_t *p_entry, u32 type)
+{
+ struct dos_dentry_t *ep = (struct dos_dentry_t *) p_entry;
+
+ if (type == TYPE_UNUSED)
+ *(ep->name) = 0x0;
+
+ else if (type == TYPE_DELETED)
+ *(ep->name) = 0xE5;
+
+ else if (type == TYPE_EXTEND)
+ ep->attr = ATTR_EXTEND;
+
+ else if (type == TYPE_DIR)
+ ep->attr = ATTR_SUBDIR;
+
+ else if (type == TYPE_FILE)
+ ep->attr = ATTR_ARCHIVE;
+
+ else if (type == TYPE_SYMLINK)
+ ep->attr = ATTR_ARCHIVE | ATTR_SYMLINK;
+}
+
+void exfat_set_entry_type(struct dentry_t *p_entry, u32 type)
+{
+ struct file_dentry_t *ep = (struct file_dentry_t *) p_entry;
+
+ if (type == TYPE_UNUSED) {
+ ep->type = 0x0;
+ } else if (type == TYPE_DELETED) {
+ ep->type &= ~0x80;
+ } else if (type == TYPE_STREAM) {
+ ep->type = 0xC0;
+ } else if (type == TYPE_EXTEND) {
+ ep->type = 0xC1;
+ } else if (type == TYPE_BITMAP) {
+ ep->type = 0x81;
+ } else if (type == TYPE_UPCASE) {
+ ep->type = 0x82;
+ } else if (type == TYPE_VOLUME) {
+ ep->type = 0x83;
+ } else if (type == TYPE_DIR) {
+ ep->type = 0x85;
+ SET16_A(ep->attr, ATTR_SUBDIR);
+ } else if (type == TYPE_FILE) {
+ ep->type = 0x85;
+ SET16_A(ep->attr, ATTR_ARCHIVE);
+ } else if (type == TYPE_SYMLINK) {
+ ep->type = 0x85;
+ SET16_A(ep->attr, ATTR_ARCHIVE | ATTR_SYMLINK);
+ }
+}
+
+u32 fat_get_entry_attr(struct dentry_t *p_entry)
+{
+ struct dos_dentry_t *ep = (struct dos_dentry_t *) p_entry;
+
+ return (u32) ep->attr;
+}
+
+u32 exfat_get_entry_attr(struct dentry_t *p_entry)
+{
+ struct file_dentry_t *ep = (struct file_dentry_t *) p_entry;
+
+ return (u32) GET16_A(ep->attr);
+}
+
+void fat_set_entry_attr(struct dentry_t *p_entry, u32 attr)
+{
+ struct dos_dentry_t *ep = (struct dos_dentry_t *) p_entry;
+
+ ep->attr = (u8) attr;
+}
+
+void exfat_set_entry_attr(struct dentry_t *p_entry, u32 attr)
+{
+ struct file_dentry_t *ep = (struct file_dentry_t *) p_entry;
+
+ SET16_A(ep->attr, (u16) attr);
+}
+
+u8 fat_get_entry_flag(struct dentry_t *p_entry)
+{
+ return 0x01;
+}
+
+u8 exfat_get_entry_flag(struct dentry_t *p_entry)
+{
+ struct strm_dentry_t *ep = (struct strm_dentry_t *) p_entry;
+
+ return ep->flags;
+}
+
+void fat_set_entry_flag(struct dentry_t *p_entry, u8 flags)
+{
+}
+
+void exfat_set_entry_flag(struct dentry_t *p_entry, u8 flags)
+{
+ struct strm_dentry_t *ep = (struct strm_dentry_t *) p_entry;
+
+ ep->flags = flags;
+}
+
+u32 fat_get_entry_clu0(struct dentry_t *p_entry)
+{
+ struct dos_dentry_t *ep = (struct dos_dentry_t *) p_entry;
+
+ return ((u32)GET16_A(ep->start_clu_hi) << 16) |
+ GET16_A(ep->start_clu_lo);
+}
+
+u32 exfat_get_entry_clu0(struct dentry_t *p_entry)
+{
+ struct strm_dentry_t *ep = (struct strm_dentry_t *) p_entry;
+
+ return GET32_A(ep->start_clu);
+}
+
+void fat_set_entry_clu0(struct dentry_t *p_entry, u32 start_clu)
+{
+ struct dos_dentry_t *ep = (struct dos_dentry_t *)p_entry;
+
+ SET16_A(ep->start_clu_lo, CLUSTER_16(start_clu));
+ SET16_A(ep->start_clu_hi, CLUSTER_16(start_clu >> 16));
+}
+
+void exfat_set_entry_clu0(struct dentry_t *p_entry, u32 start_clu)
+{
+ struct strm_dentry_t *ep = (struct strm_dentry_t *)p_entry;
+
+ SET32_A(ep->start_clu, start_clu);
+}
+
+u64 fat_get_entry_size(struct dentry_t *p_entry)
+{
+ struct dos_dentry_t *ep = (struct dos_dentry_t *)p_entry;
+
+ return (u64) GET32_A(ep->size);
+}
+
+u64 exfat_get_entry_size(struct dentry_t *p_entry)
+{
+ struct strm_dentry_t *ep = (struct strm_dentry_t *)p_entry;
+
+ return GET64_A(ep->valid_size);
+}
+
+void fat_set_entry_size(struct dentry_t *p_entry, u64 size)
+{
+ struct dos_dentry_t *ep = (struct dos_dentry_t *)p_entry;
+
+ SET32_A(ep->size, (u32) size);
+}
+
+void exfat_set_entry_size(struct dentry_t *p_entry, u64 size)
+{
+ struct strm_dentry_t *ep = (struct strm_dentry_t *)p_entry;
+
+ SET64_A(ep->valid_size, size);
+ SET64_A(ep->size, size);
+}
+
+void fat_get_entry_time(struct dentry_t *p_entry, struct timestamp_t *tp,
+ u8 mode)
+{
+ u16 t = 0x00, d = 0x21;
+ struct dos_dentry_t *ep = (struct dos_dentry_t *)p_entry;
+
+ switch (mode) {
+ case TM_CREATE:
+ t = GET16_A(ep->create_time);
+ d = GET16_A(ep->create_date);
+ break;
+ case TM_MODIFY:
+ t = GET16_A(ep->modify_time);
+ d = GET16_A(ep->modify_date);
+ break;
+ }
+
+ tp->sec = (t & 0x001F) << 1;
+ tp->min = (t >> 5) & 0x003F;
+ tp->hour = (t >> 11);
+ tp->day = (d & 0x001F);
+ tp->mon = (d >> 5) & 0x000F;
+ tp->year = (d >> 9);
+}
+
+void exfat_get_entry_time(struct dentry_t *p_entry, struct timestamp_t *tp,
+ u8 mode)
+{
+ u16 t = 0x00, d = 0x21;
+ struct file_dentry_t *ep = (struct file_dentry_t *)p_entry;
+
+ switch (mode) {
+ case TM_CREATE:
+ t = GET16_A(ep->create_time);
+ d = GET16_A(ep->create_date);
+ break;
+ case TM_MODIFY:
+ t = GET16_A(ep->modify_time);
+ d = GET16_A(ep->modify_date);
+ break;
+ case TM_ACCESS:
+ t = GET16_A(ep->access_time);
+ d = GET16_A(ep->access_date);
+ break;
+ }
+
+ tp->sec = (t & 0x001F) << 1;
+ tp->min = (t >> 5) & 0x003F;
+ tp->hour = (t >> 11);
+ tp->day = (d & 0x001F);
+ tp->mon = (d >> 5) & 0x000F;
+ tp->year = (d >> 9);
+}
+
+void fat_set_entry_time(struct dentry_t *p_entry, struct timestamp_t *tp,
+ u8 mode)
+{
+ u16 t, d;
+ struct dos_dentry_t *ep = (struct dos_dentry_t *)p_entry;
+
+ t = (tp->hour << 11) | (tp->min << 5) | (tp->sec >> 1);
+ d = (tp->year << 9) | (tp->mon << 5) | tp->day;
+
+ switch (mode) {
+ case TM_CREATE:
+ SET16_A(ep->create_time, t);
+ SET16_A(ep->create_date, d);
+ break;
+ case TM_MODIFY:
+ SET16_A(ep->modify_time, t);
+ SET16_A(ep->modify_date, d);
+ break;
+ }
+}
+
+void exfat_set_entry_time(struct dentry_t *p_entry, struct timestamp_t *tp,
+ u8 mode)
+{
+ u16 t, d;
+ struct file_dentry_t *ep = (struct file_dentry_t *)p_entry;
+
+ t = (tp->hour << 11) | (tp->min << 5) | (tp->sec >> 1);
+ d = (tp->year << 9) | (tp->mon << 5) | tp->day;
+
+ switch (mode) {
+ case TM_CREATE:
+ SET16_A(ep->create_time, t);
+ SET16_A(ep->create_date, d);
+ break;
+ case TM_MODIFY:
+ SET16_A(ep->modify_time, t);
+ SET16_A(ep->modify_date, d);
+ break;
+ case TM_ACCESS:
+ SET16_A(ep->access_time, t);
+ SET16_A(ep->access_date, d);
+ break;
+ }
+}
+
+s32 fat_init_dir_entry(struct super_block *sb, struct chain_t *p_dir, s32 entry,
+ u32 type, u32 start_clu, u64 size)
+{
+ sector_t sector;
+ struct dos_dentry_t *dos_ep;
+
+ dos_ep = (struct dos_dentry_t *)get_entry_in_dir(sb, p_dir, entry,
+ §or);
+ if (!dos_ep)
+ return FFS_MEDIAERR;
+
+ init_dos_entry(dos_ep, type, start_clu);
+ buf_modify(sb, sector);
+
+ return FFS_SUCCESS;
+}
+
+s32 exfat_init_dir_entry(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, u32 type, u32 start_clu, u64 size)
+{
+ sector_t sector;
+ u8 flags;
+ struct file_dentry_t *file_ep;
+ struct strm_dentry_t *strm_ep;
+
+ flags = (type == TYPE_FILE) ? 0x01 : 0x03;
+
+ /* we cannot use get_entry_set_in_dir here because file ep is not initialized yet */
+ file_ep = (struct file_dentry_t *)get_entry_in_dir(sb, p_dir, entry,
+ §or);
+ if (!file_ep)
+ return FFS_MEDIAERR;
+
+ strm_ep = (struct strm_dentry_t *)get_entry_in_dir(sb, p_dir, entry+1,
+ §or);
+ if (!strm_ep)
+ return FFS_MEDIAERR;
+
+ init_file_entry(file_ep, type);
+ buf_modify(sb, sector);
+
+ init_strm_entry(strm_ep, flags, start_clu, size);
+ buf_modify(sb, sector);
+
+ return FFS_SUCCESS;
+}
+
+static s32 fat_init_ext_entry(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, s32 num_entries,
+ struct uni_name_t *p_uniname,
+ struct dos_name_t *p_dosname)
+{
+ int i;
+ sector_t sector;
+ u8 chksum;
+ u16 *uniname = p_uniname->name;
+ struct dos_dentry_t *dos_ep;
+ struct ext_dentry_t *ext_ep;
+
+ dos_ep = (struct dos_dentry_t *)get_entry_in_dir(sb, p_dir, entry,
+ §or);
+ if (!dos_ep)
+ return FFS_MEDIAERR;
+
+ dos_ep->lcase = p_dosname->name_case;
+ memcpy(dos_ep->name, p_dosname->name, DOS_NAME_LENGTH);
+ buf_modify(sb, sector);
+
+ if ((--num_entries) > 0) {
+ chksum = calc_checksum_1byte((void *)dos_ep->name,
+ DOS_NAME_LENGTH, 0);
+
+ for (i = 1; i < num_entries; i++) {
+ ext_ep = (struct ext_dentry_t *)get_entry_in_dir(sb,
+ p_dir,
+ entry - i,
+ §or);
+ if (!ext_ep)
+ return FFS_MEDIAERR;
+
+ init_ext_entry(ext_ep, i, chksum, uniname);
+ buf_modify(sb, sector);
+ uniname += 13;
+ }
+
+ ext_ep = (struct ext_dentry_t *)get_entry_in_dir(sb, p_dir,
+ entry - i,
+ §or);
+ if (!ext_ep)
+ return FFS_MEDIAERR;
+
+ init_ext_entry(ext_ep, i+0x40, chksum, uniname);
+ buf_modify(sb, sector);
+ }
+
+ return FFS_SUCCESS;
+}
+
+static s32 exfat_init_ext_entry(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, s32 num_entries,
+ struct uni_name_t *p_uniname,
+ struct dos_name_t *p_dosname)
+{
+ int i;
+ sector_t sector;
+ u16 *uniname = p_uniname->name;
+ struct file_dentry_t *file_ep;
+ struct strm_dentry_t *strm_ep;
+ struct name_dentry_t *name_ep;
+
+ file_ep = (struct file_dentry_t *)get_entry_in_dir(sb, p_dir, entry,
+ §or);
+ if (!file_ep)
+ return FFS_MEDIAERR;
+
+ file_ep->num_ext = (u8)(num_entries - 1);
+ buf_modify(sb, sector);
+
+ strm_ep = (struct strm_dentry_t *)get_entry_in_dir(sb, p_dir, entry+1,
+ §or);
+ if (!strm_ep)
+ return FFS_MEDIAERR;
+
+ strm_ep->name_len = p_uniname->name_len;
+ SET16_A(strm_ep->name_hash, p_uniname->name_hash);
+ buf_modify(sb, sector);
+
+ for (i = 2; i < num_entries; i++) {
+ name_ep = (struct name_dentry_t *)get_entry_in_dir(sb, p_dir,
+ entry + i,
+ §or);
+ if (!name_ep)
+ return FFS_MEDIAERR;
+
+ init_name_entry(name_ep, uniname);
+ buf_modify(sb, sector);
+ uniname += 15;
+ }
+
+ update_dir_checksum(sb, p_dir, entry);
+
+ return FFS_SUCCESS;
+}
+
+void init_dos_entry(struct dos_dentry_t *ep, u32 type, u32 start_clu)
+{
+ struct timestamp_t tm, *tp;
+
+ fat_set_entry_type((struct dentry_t *) ep, type);
+ SET16_A(ep->start_clu_lo, CLUSTER_16(start_clu));
+ SET16_A(ep->start_clu_hi, CLUSTER_16(start_clu >> 16));
+ SET32_A(ep->size, 0);
+
+ tp = tm_current(&tm);
+ fat_set_entry_time((struct dentry_t *) ep, tp, TM_CREATE);
+ fat_set_entry_time((struct dentry_t *) ep, tp, TM_MODIFY);
+ SET16_A(ep->access_date, 0);
+ ep->create_time_ms = 0;
+}
+
+void init_ext_entry(struct ext_dentry_t *ep, s32 order, u8 chksum, u16 *uniname)
+{
+ int i;
+ u8 end = FALSE;
+
+ fat_set_entry_type((struct dentry_t *) ep, TYPE_EXTEND);
+ ep->order = (u8) order;
+ ep->sysid = 0;
+ ep->checksum = chksum;
+ SET16_A(ep->start_clu, 0);
+
+ for (i = 0; i < 10; i += 2) {
+ if (!end) {
+ SET16(ep->unicode_0_4+i, *uniname);
+ if (*uniname == 0x0)
+ end = TRUE;
+ else
+ uniname++;
+ } else {
+ SET16(ep->unicode_0_4+i, 0xFFFF);
+ }
+ }
+
+ for (i = 0; i < 12; i += 2) {
+ if (!end) {
+ SET16_A(ep->unicode_5_10 + i, *uniname);
+ if (*uniname == 0x0)
+ end = TRUE;
+ else
+ uniname++;
+ } else {
+ SET16_A(ep->unicode_5_10 + i, 0xFFFF);
+ }
+ }
+
+ for (i = 0; i < 4; i += 2) {
+ if (!end) {
+ SET16_A(ep->unicode_11_12 + i, *uniname);
+ if (*uniname == 0x0)
+ end = TRUE;
+ else
+ uniname++;
+ } else {
+ SET16_A(ep->unicode_11_12 + i, 0xFFFF);
+ }
+ }
+}
+
+void init_file_entry(struct file_dentry_t *ep, u32 type)
+{
+ struct timestamp_t tm, *tp;
+
+ exfat_set_entry_type((struct dentry_t *)ep, type);
+
+ tp = tm_current(&tm);
+ exfat_set_entry_time((struct dentry_t *)ep, tp, TM_CREATE);
+ exfat_set_entry_time((struct dentry_t *)ep, tp, TM_MODIFY);
+ exfat_set_entry_time((struct dentry_t *)ep, tp, TM_ACCESS);
+ ep->create_time_ms = 0;
+ ep->modify_time_ms = 0;
+ ep->access_time_ms = 0;
+}
+
+void init_strm_entry(struct strm_dentry_t *ep, u8 flags, u32 start_clu, u64 size)
+{
+ exfat_set_entry_type((struct dentry_t *)ep, TYPE_STREAM);
+ ep->flags = flags;
+ SET32_A(ep->start_clu, start_clu);
+ SET64_A(ep->valid_size, size);
+ SET64_A(ep->size, size);
+}
+
+void init_name_entry(struct name_dentry_t *ep, u16 *uniname)
+{
+ int i;
+
+ exfat_set_entry_type((struct dentry_t *)ep, TYPE_EXTEND);
+ ep->flags = 0x0;
+
+ for (i = 0; i < 30; i++, i++) {
+ SET16_A(ep->unicode_0_14+i, *uniname);
+ if (*uniname == 0x0)
+ break;
+ uniname++;
+ }
+}
+
+void fat_delete_dir_entry(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, s32 order, s32 num_entries)
+{
+ int i;
+ sector_t sector;
+ struct dentry_t *ep;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ for (i = num_entries-1; i >= order; i--) {
+ ep = get_entry_in_dir(sb, p_dir, entry-i, §or);
+ if (!ep)
+ return;
+
+ p_fs->fs_func->set_entry_type(ep, TYPE_DELETED);
+ buf_modify(sb, sector);
+ }
+}
+
+void exfat_delete_dir_entry(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, s32 order, s32 num_entries)
+{
+ int i;
+ sector_t sector;
+ struct dentry_t *ep;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ for (i = order; i < num_entries; i++) {
+ ep = get_entry_in_dir(sb, p_dir, entry+i, §or);
+ if (!ep)
+ return;
+
+ p_fs->fs_func->set_entry_type(ep, TYPE_DELETED);
+ buf_modify(sb, sector);
+ }
+}
+
+void update_dir_checksum(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry)
+{
+ int i, num_entries;
+ sector_t sector;
+ u16 chksum;
+ struct file_dentry_t *file_ep;
+ struct dentry_t *ep;
+
+ file_ep = (struct file_dentry_t *)get_entry_in_dir(sb, p_dir, entry,
+ §or);
+ if (!file_ep)
+ return;
+
+ buf_lock(sb, sector);
+
+ num_entries = (s32) file_ep->num_ext + 1;
+ chksum = calc_checksum_2byte((void *)file_ep, DENTRY_SIZE, 0,
+ CS_DIR_ENTRY);
+
+ for (i = 1; i < num_entries; i++) {
+ ep = get_entry_in_dir(sb, p_dir, entry+i, NULL);
+ if (!ep) {
+ buf_unlock(sb, sector);
+ return;
+ }
+
+ chksum = calc_checksum_2byte((void *)ep, DENTRY_SIZE, chksum,
+ CS_DEFAULT);
+ }
+
+ SET16_A(file_ep->checksum, chksum);
+ buf_modify(sb, sector);
+ buf_unlock(sb, sector);
+}
+
+void update_dir_checksum_with_entry_set(struct super_block *sb,
+ struct entry_set_cache_t *es)
+{
+ struct dentry_t *ep;
+ u16 chksum = 0;
+ s32 chksum_type = CS_DIR_ENTRY, i;
+
+ ep = (struct dentry_t *)&(es->__buf);
+ for (i = 0; i < es->num_entries; i++) {
+ pr_debug("%s ep %p\n", __func__, ep);
+ chksum = calc_checksum_2byte((void *)ep, DENTRY_SIZE, chksum,
+ chksum_type);
+ ep++;
+ chksum_type = CS_DEFAULT;
+ }
+
+ ep = (struct dentry_t *)&(es->__buf);
+ SET16_A(((struct file_dentry_t *)ep)->checksum, chksum);
+ write_whole_entry_set(sb, es);
+}
+
+static s32 _walk_fat_chain(struct super_block *sb, struct chain_t *p_dir,
+ s32 byte_offset, u32 *clu)
+{
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ s32 clu_offset;
+ u32 cur_clu;
+
+ clu_offset = byte_offset >> p_fs->cluster_size_bits;
+ cur_clu = p_dir->dir;
+
+ if (p_dir->flags == 0x03) {
+ cur_clu += clu_offset;
+ } else {
+ while (clu_offset > 0) {
+ if (FAT_read(sb, cur_clu, &cur_clu) == -1)
+ return FFS_MEDIAERR;
+ clu_offset--;
+ }
+ }
+
+ if (clu)
+ *clu = cur_clu;
+ return FFS_SUCCESS;
+}
+
+s32 find_location(struct super_block *sb, struct chain_t *p_dir, s32 entry,
+ sector_t *sector, s32 *offset)
+{
+ s32 off, ret;
+ u32 clu = 0;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ off = entry << DENTRY_SIZE_BITS;
+
+ if (p_dir->dir == CLUSTER_32(0)) { /* FAT16 root_dir */
+ *offset = off & p_bd->sector_size_mask;
+ *sector = off >> p_bd->sector_size_bits;
+ *sector += p_fs->root_start_sector;
+ } else {
+ ret = _walk_fat_chain(sb, p_dir, off, &clu);
+ if (ret != FFS_SUCCESS)
+ return ret;
+
+ /* byte offset in cluster */
+ off &= p_fs->cluster_size - 1;
+
+ /* byte offset in sector */
+ *offset = off & p_bd->sector_size_mask;
+
+ /* sector offset in cluster */
+ *sector = off >> p_bd->sector_size_bits;
+ *sector += START_SECTOR(clu);
+ }
+ return FFS_SUCCESS;
+}
+
+struct dentry_t *get_entry_with_sector(struct super_block *sb, sector_t sector,
+ s32 offset)
+{
+ u8 *buf;
+
+ buf = buf_getblk(sb, sector);
+
+ if (buf == NULL)
+ return NULL;
+
+ return (struct dentry_t *)(buf + offset);
+}
+
+struct dentry_t *get_entry_in_dir(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, sector_t *sector)
+{
+ s32 off;
+ sector_t sec;
+ u8 *buf;
+
+ if (find_location(sb, p_dir, entry, &sec, &off) != FFS_SUCCESS)
+ return NULL;
+
+ buf = buf_getblk(sb, sec);
+
+ if (buf == NULL)
+ return NULL;
+
+ if (sector != NULL)
+ *sector = sec;
+ return (struct dentry_t *)(buf + off);
+}
+
+/* returns a set of dentries for a file or dir.
+ * Note that this is a copy (dump) of dentries so that user should call write_entry_set()
+ * to apply changes made in this entry set to the real device.
+ * in:
+ * sb+p_dir+entry: indicates a file/dir
+ * type: specifies how many dentries should be included.
+ * out:
+ * file_ep: will point the first dentry(= file dentry) on success
+ * return:
+ * pointer of entry set on success,
+ * NULL on failure.
+ */
+
+#define ES_MODE_STARTED 0
+#define ES_MODE_GET_FILE_ENTRY 1
+#define ES_MODE_GET_STRM_ENTRY 2
+#define ES_MODE_GET_NAME_ENTRY 3
+#define ES_MODE_GET_CRITICAL_SEC_ENTRY 4
+struct entry_set_cache_t *get_entry_set_in_dir(struct super_block *sb,
+ struct chain_t *p_dir, s32 entry,
+ u32 type,
+ struct dentry_t **file_ep)
+{
+ s32 off, ret, byte_offset;
+ u32 clu = 0;
+ sector_t sec;
+ u32 entry_type;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+ struct entry_set_cache_t *es = NULL;
+ struct dentry_t *ep, *pos;
+ u8 *buf;
+ u8 num_entries;
+ s32 mode = ES_MODE_STARTED;
+ size_t bufsize;
+
+ pr_debug("%s entered p_dir dir %u flags %x size %d\n",
+ __func__, p_dir->dir, p_dir->flags, p_dir->size);
+
+ byte_offset = entry << DENTRY_SIZE_BITS;
+ ret = _walk_fat_chain(sb, p_dir, byte_offset, &clu);
+ if (ret != FFS_SUCCESS)
+ return NULL;
+
+
+ /* byte offset in cluster */
+ byte_offset &= p_fs->cluster_size - 1;
+
+ /* byte offset in sector */
+ off = byte_offset & p_bd->sector_size_mask;
+
+ /* sector offset in cluster */
+ sec = byte_offset >> p_bd->sector_size_bits;
+ sec += START_SECTOR(clu);
+
+ buf = buf_getblk(sb, sec);
+ if (buf == NULL)
+ goto err_out;
+
+
+ ep = (struct dentry_t *)(buf + off);
+ entry_type = p_fs->fs_func->get_entry_type(ep);
+
+ if ((entry_type != TYPE_FILE)
+ && (entry_type != TYPE_DIR))
+ goto err_out;
+
+ if (type == ES_ALL_ENTRIES)
+ num_entries = ((struct file_dentry_t *)ep)->num_ext+1;
+ else
+ num_entries = type;
+
+ bufsize = offsetof(struct entry_set_cache_t, __buf) + (num_entries) *
+ sizeof(struct dentry_t);
+ pr_debug("%s: trying to kmalloc %zx bytes for %d entries\n", __func__,
+ bufsize, num_entries);
+ es = kmalloc(bufsize, GFP_KERNEL);
+ if (es == NULL)
+ goto err_out;
+
+ es->num_entries = num_entries;
+ es->sector = sec;
+ es->offset = off;
+ es->alloc_flag = p_dir->flags;
+
+ pos = (struct dentry_t *) &(es->__buf);
+
+ while (num_entries) {
+ /*
+ * instead of copying whole sector, we will check every entry.
+ * this will provide minimum stablity and consistancy.
+ */
+ entry_type = p_fs->fs_func->get_entry_type(ep);
+
+ if ((entry_type == TYPE_UNUSED) || (entry_type == TYPE_DELETED))
+ goto err_out;
+
+ switch (mode) {
+ case ES_MODE_STARTED:
+ if ((entry_type == TYPE_FILE) || (entry_type == TYPE_DIR))
+ mode = ES_MODE_GET_FILE_ENTRY;
+ else
+ goto err_out;
+ break;
+ case ES_MODE_GET_FILE_ENTRY:
+ if (entry_type == TYPE_STREAM)
+ mode = ES_MODE_GET_STRM_ENTRY;
+ else
+ goto err_out;
+ break;
+ case ES_MODE_GET_STRM_ENTRY:
+ if (entry_type == TYPE_EXTEND)
+ mode = ES_MODE_GET_NAME_ENTRY;
+ else
+ goto err_out;
+ break;
+ case ES_MODE_GET_NAME_ENTRY:
+ if (entry_type == TYPE_EXTEND)
+ break;
+ else if (entry_type == TYPE_STREAM)
+ goto err_out;
+ else if (entry_type & TYPE_CRITICAL_SEC)
+ mode = ES_MODE_GET_CRITICAL_SEC_ENTRY;
+ else
+ goto err_out;
+ break;
+ case ES_MODE_GET_CRITICAL_SEC_ENTRY:
+ if ((entry_type == TYPE_EXTEND) ||
+ (entry_type == TYPE_STREAM))
+ goto err_out;
+ else if ((entry_type & TYPE_CRITICAL_SEC) !=
+ TYPE_CRITICAL_SEC)
+ goto err_out;
+ break;
+ }
+
+ memcpy(pos, ep, sizeof(struct dentry_t));
+
+ if (--num_entries == 0)
+ break;
+
+ if (((off + DENTRY_SIZE) & p_bd->sector_size_mask) <
+ (off & p_bd->sector_size_mask)) {
+ /* get the next sector */
+ if (IS_LAST_SECTOR_IN_CLUSTER(sec)) {
+ if (es->alloc_flag == 0x03) {
+ clu++;
+ } else {
+ if (FAT_read(sb, clu, &clu) == -1)
+ goto err_out;
+ }
+ sec = START_SECTOR(clu);
+ } else {
+ sec++;
+ }
+ buf = buf_getblk(sb, sec);
+ if (buf == NULL)
+ goto err_out;
+ off = 0;
+ ep = (struct dentry_t *)(buf);
+ } else {
+ ep++;
+ off += DENTRY_SIZE;
+ }
+ pos++;
+ }
+
+ if (file_ep)
+ *file_ep = (struct dentry_t *)&(es->__buf);
+
+ pr_debug("%s exiting es %p sec %llu offset %d flags %d, num_entries %u buf ptr %p\n",
+ __func__, es, (unsigned long long)es->sector, es->offset,
+ es->alloc_flag, es->num_entries, &es->__buf);
+ return es;
+err_out:
+ pr_debug("%s exited NULL (es %p)\n", __func__, es);
+ kfree(es);
+ return NULL;
+}
+
+void release_entry_set(struct entry_set_cache_t *es)
+{
+ pr_debug("%s es=%p\n", __func__, es);
+ kfree(es);
+}
+
+
+static s32 __write_partial_entries_in_entry_set(struct super_block *sb,
+ struct entry_set_cache_t *es,
+ sector_t sec, s32 off, u32 count)
+{
+ s32 num_entries, buf_off = (off - es->offset);
+ u32 remaining_byte_in_sector, copy_entries;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+ u32 clu;
+ u8 *buf, *esbuf = (u8 *)&(es->__buf);
+
+ pr_debug("%s entered es %p sec %llu off %d count %d\n",
+ __func__, es, (unsigned long long)sec, off, count);
+ num_entries = count;
+
+ while (num_entries) {
+ /* white per sector base */
+ remaining_byte_in_sector = (1 << p_bd->sector_size_bits) - off;
+ copy_entries = min_t(s32,
+ remaining_byte_in_sector >> DENTRY_SIZE_BITS,
+ num_entries);
+ buf = buf_getblk(sb, sec);
+ if (buf == NULL)
+ goto err_out;
+ pr_debug("es->buf %p buf_off %u\n", esbuf, buf_off);
+ pr_debug("copying %d entries from %p to sector %llu\n",
+ copy_entries, (esbuf + buf_off),
+ (unsigned long long)sec);
+ memcpy(buf + off, esbuf + buf_off,
+ copy_entries << DENTRY_SIZE_BITS);
+ buf_modify(sb, sec);
+ num_entries -= copy_entries;
+
+ if (num_entries) {
+ /* get next sector */
+ if (IS_LAST_SECTOR_IN_CLUSTER(sec)) {
+ clu = GET_CLUSTER_FROM_SECTOR(sec);
+ if (es->alloc_flag == 0x03) {
+ clu++;
+ } else {
+ if (FAT_read(sb, clu, &clu) == -1)
+ goto err_out;
+ }
+ sec = START_SECTOR(clu);
+ } else {
+ sec++;
+ }
+ off = 0;
+ buf_off += copy_entries << DENTRY_SIZE_BITS;
+ }
+ }
+
+ pr_debug("%s exited successfully\n", __func__);
+ return FFS_SUCCESS;
+err_out:
+ pr_debug("%s failed\n", __func__);
+ return FFS_ERROR;
+}
+
+/* write back all entries in entry set */
+s32 write_whole_entry_set(struct super_block *sb, struct entry_set_cache_t *es)
+{
+ return __write_partial_entries_in_entry_set(sb, es, es->sector,
+ es->offset,
+ es->num_entries);
+}
+
+/* write back some entries in entry set */
+s32 write_partial_entries_in_entry_set(struct super_block *sb,
+ struct entry_set_cache_t *es, struct dentry_t *ep, u32 count)
+{
+ s32 ret, byte_offset, off;
+ u32 clu = 0;
+ sector_t sec;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+ struct chain_t dir;
+
+ /* vaidity check */
+ if (ep + count > ((struct dentry_t *)&(es->__buf)) + es->num_entries)
+ return FFS_ERROR;
+
+ dir.dir = GET_CLUSTER_FROM_SECTOR(es->sector);
+ dir.flags = es->alloc_flag;
+ dir.size = 0xffffffff; /* XXX */
+
+ byte_offset = (es->sector - START_SECTOR(dir.dir)) <<
+ p_bd->sector_size_bits;
+ byte_offset += ((void **)ep - &(es->__buf)) + es->offset;
+
+ ret = _walk_fat_chain(sb, &dir, byte_offset, &clu);
+ if (ret != FFS_SUCCESS)
+ return ret;
+
+ /* byte offset in cluster */
+ byte_offset &= p_fs->cluster_size - 1;
+
+ /* byte offset in sector */
+ off = byte_offset & p_bd->sector_size_mask;
+
+ /* sector offset in cluster */
+ sec = byte_offset >> p_bd->sector_size_bits;
+ sec += START_SECTOR(clu);
+ return __write_partial_entries_in_entry_set(sb, es, sec, off, count);
+}
+
+/* search EMPTY CONTINUOUS "num_entries" entries */
+s32 search_deleted_or_unused_entry(struct super_block *sb,
+ struct chain_t *p_dir, s32 num_entries)
+{
+ int i, dentry, num_empty = 0;
+ s32 dentries_per_clu;
+ u32 type;
+ struct chain_t clu;
+ struct dentry_t *ep;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
+ dentries_per_clu = p_fs->dentries_in_root;
+ else
+ dentries_per_clu = p_fs->dentries_per_clu;
+
+ if (p_fs->hint_uentry.dir == p_dir->dir) {
+ if (p_fs->hint_uentry.entry == -1)
+ return -1;
+
+ clu.dir = p_fs->hint_uentry.clu.dir;
+ clu.size = p_fs->hint_uentry.clu.size;
+ clu.flags = p_fs->hint_uentry.clu.flags;
+
+ dentry = p_fs->hint_uentry.entry;
+ } else {
+ p_fs->hint_uentry.entry = -1;
+
+ clu.dir = p_dir->dir;
+ clu.size = p_dir->size;
+ clu.flags = p_dir->flags;
+
+ dentry = 0;
+ }
+
+ while (clu.dir != CLUSTER_32(~0)) {
+ if (p_fs->dev_ejected)
+ break;
+
+ if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
+ i = dentry % dentries_per_clu;
+ else
+ i = dentry & (dentries_per_clu-1);
+
+ for (; i < dentries_per_clu; i++, dentry++) {
+ ep = get_entry_in_dir(sb, &clu, i, NULL);
+ if (!ep)
+ return -1;
+
+ type = p_fs->fs_func->get_entry_type(ep);
+
+ if (type == TYPE_UNUSED) {
+ num_empty++;
+ if (p_fs->hint_uentry.entry == -1) {
+ p_fs->hint_uentry.dir = p_dir->dir;
+ p_fs->hint_uentry.entry = dentry;
+
+ p_fs->hint_uentry.clu.dir = clu.dir;
+ p_fs->hint_uentry.clu.size = clu.size;
+ p_fs->hint_uentry.clu.flags = clu.flags;
+ }
+ } else if (type == TYPE_DELETED) {
+ num_empty++;
+ } else {
+ num_empty = 0;
+ }
+
+ if (num_empty >= num_entries) {
+ p_fs->hint_uentry.dir = CLUSTER_32(~0);
+ p_fs->hint_uentry.entry = -1;
+
+ if (p_fs->vol_type == EXFAT)
+ return dentry - (num_entries-1);
+ else
+ return dentry;
+ }
+ }
+
+ if (p_dir->dir == CLUSTER_32(0))
+ break; /* FAT16 root_dir */
+
+ if (clu.flags == 0x03) {
+ if ((--clu.size) > 0)
+ clu.dir++;
+ else
+ clu.dir = CLUSTER_32(~0);
+ } else {
+ if (FAT_read(sb, clu.dir, &clu.dir) != 0)
+ return -1;
+ }
+ }
+
+ return -1;
+}
+
+s32 find_empty_entry(struct inode *inode, struct chain_t *p_dir, s32 num_entries)
+{
+ s32 ret, dentry;
+ u32 last_clu;
+ sector_t sector;
+ u64 size = 0;
+ struct chain_t clu;
+ struct dentry_t *ep = NULL;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct file_id_t *fid = &(EXFAT_I(inode)->fid);
+
+ if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
+ return search_deleted_or_unused_entry(sb, p_dir, num_entries);
+
+ while ((dentry = search_deleted_or_unused_entry(sb, p_dir, num_entries)) < 0) {
+ if (p_fs->dev_ejected)
+ break;
+
+ if (p_fs->vol_type == EXFAT) {
+ if (p_dir->dir != p_fs->root_dir)
+ size = i_size_read(inode);
+ }
+
+ last_clu = find_last_cluster(sb, p_dir);
+ clu.dir = last_clu + 1;
+ clu.size = 0;
+ clu.flags = p_dir->flags;
+
+ /* (1) allocate a cluster */
+ ret = p_fs->fs_func->alloc_cluster(sb, 1, &clu);
+ if (ret < 1)
+ return -1;
+
+ if (clear_cluster(sb, clu.dir) != FFS_SUCCESS)
+ return -1;
+
+ /* (2) append to the FAT chain */
+ if (clu.flags != p_dir->flags) {
+ exfat_chain_cont_cluster(sb, p_dir->dir, p_dir->size);
+ p_dir->flags = 0x01;
+ p_fs->hint_uentry.clu.flags = 0x01;
+ }
+ if (clu.flags == 0x01)
+ if (FAT_write(sb, last_clu, clu.dir) < 0)
+ return -1;
+
+ if (p_fs->hint_uentry.entry == -1) {
+ p_fs->hint_uentry.dir = p_dir->dir;
+ p_fs->hint_uentry.entry = p_dir->size << (p_fs->cluster_size_bits - DENTRY_SIZE_BITS);
+
+ p_fs->hint_uentry.clu.dir = clu.dir;
+ p_fs->hint_uentry.clu.size = 0;
+ p_fs->hint_uentry.clu.flags = clu.flags;
+ }
+ p_fs->hint_uentry.clu.size++;
+ p_dir->size++;
+
+ /* (3) update the directory entry */
+ if (p_fs->vol_type == EXFAT) {
+ if (p_dir->dir != p_fs->root_dir) {
+ size += p_fs->cluster_size;
+
+ ep = get_entry_in_dir(sb, &fid->dir,
+ fid->entry + 1, §or);
+ if (!ep)
+ return -1;
+ p_fs->fs_func->set_entry_size(ep, size);
+ p_fs->fs_func->set_entry_flag(ep, p_dir->flags);
+ buf_modify(sb, sector);
+
+ update_dir_checksum(sb, &(fid->dir),
+ fid->entry);
+ }
+ }
+
+ i_size_write(inode, i_size_read(inode)+p_fs->cluster_size);
+ EXFAT_I(inode)->mmu_private += p_fs->cluster_size;
+ EXFAT_I(inode)->fid.size += p_fs->cluster_size;
+ EXFAT_I(inode)->fid.flags = p_dir->flags;
+ inode->i_blocks += 1 << (p_fs->cluster_size_bits - 9);
+ }
+
+ return dentry;
+}
+
+/* return values of fat_find_dir_entry()
+ * >= 0 : return dir entiry position with the name in dir
+ * -1 : (root dir, ".") it is the root dir itself
+ * -2 : entry with the name does not exist
+ */
+s32 fat_find_dir_entry(struct super_block *sb, struct chain_t *p_dir,
+ struct uni_name_t *p_uniname, s32 num_entries,
+ struct dos_name_t *p_dosname, u32 type)
+{
+ int i, dentry = 0, lossy = FALSE, len;
+ s32 order = 0, is_feasible_entry = TRUE, has_ext_entry = FALSE;
+ s32 dentries_per_clu;
+ u32 entry_type;
+ u16 entry_uniname[14], *uniname = NULL, unichar;
+ struct chain_t clu;
+ struct dentry_t *ep;
+ struct dos_dentry_t *dos_ep;
+ struct ext_dentry_t *ext_ep;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ if (p_dir->dir == p_fs->root_dir) {
+ if ((!nls_uniname_cmp(sb, p_uniname->name,
+ (u16 *)UNI_CUR_DIR_NAME)) ||
+ (!nls_uniname_cmp(sb, p_uniname->name,
+ (u16 *)UNI_PAR_DIR_NAME)))
+ return -1; // special case, root directory itself
+ }
+
+ if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
+ dentries_per_clu = p_fs->dentries_in_root;
+ else
+ dentries_per_clu = p_fs->dentries_per_clu;
+
+ clu.dir = p_dir->dir;
+ clu.flags = p_dir->flags;
+
+ while (clu.dir != CLUSTER_32(~0)) {
+ if (p_fs->dev_ejected)
+ break;
+
+ for (i = 0; i < dentries_per_clu; i++, dentry++) {
+ ep = get_entry_in_dir(sb, &clu, i, NULL);
+ if (!ep)
+ return -2;
+
+ entry_type = p_fs->fs_func->get_entry_type(ep);
+
+ if ((entry_type == TYPE_FILE) || (entry_type == TYPE_DIR)) {
+ if ((type == TYPE_ALL) || (type == entry_type)) {
+ if (is_feasible_entry && has_ext_entry)
+ return dentry;
+
+ dos_ep = (struct dos_dentry_t *) ep;
+ if ((!lossy) && (!nls_dosname_cmp(sb, p_dosname->name, dos_ep->name)))
+ return dentry;
+ }
+ is_feasible_entry = TRUE;
+ has_ext_entry = FALSE;
+ } else if (entry_type == TYPE_EXTEND) {
+ if (is_feasible_entry) {
+ ext_ep = (struct ext_dentry_t *) ep;
+ if (ext_ep->order > 0x40) {
+ order = (s32)(ext_ep->order - 0x40);
+ uniname = p_uniname->name + 13 * (order-1);
+ } else {
+ order = (s32) ext_ep->order;
+ uniname -= 13;
+ }
+
+ len = extract_uni_name_from_ext_entry(ext_ep, entry_uniname, order);
+
+ unichar = *(uniname+len);
+ *(uniname+len) = 0x0;
+
+ if (nls_uniname_cmp(sb, uniname, entry_uniname))
+ is_feasible_entry = FALSE;
+
+ *(uniname+len) = unichar;
+ }
+ has_ext_entry = TRUE;
+ } else if (entry_type == TYPE_UNUSED) {
+ return -2;
+ }
+ is_feasible_entry = TRUE;
+ has_ext_entry = FALSE;
+ }
+
+ if (p_dir->dir == CLUSTER_32(0))
+ break; /* FAT16 root_dir */
+
+ if (FAT_read(sb, clu.dir, &clu.dir) != 0)
+ return -2;
+ }
+
+ return -2;
+}
+
+/* return values of exfat_find_dir_entry()
+ * >= 0 : return dir entiry position with the name in dir
+ * -1 : (root dir, ".") it is the root dir itself
+ * -2 : entry with the name does not exist
+ */
+s32 exfat_find_dir_entry(struct super_block *sb, struct chain_t *p_dir,
+ struct uni_name_t *p_uniname, s32 num_entries,
+ struct dos_name_t *p_dosname, u32 type)
+{
+ int i = 0, dentry = 0, num_ext_entries = 0, len, step;
+ s32 order = 0, is_feasible_entry = FALSE;
+ s32 dentries_per_clu, num_empty = 0;
+ u32 entry_type;
+ u16 entry_uniname[16], *uniname = NULL, unichar;
+ struct chain_t clu;
+ struct dentry_t *ep;
+ struct file_dentry_t *file_ep;
+ struct strm_dentry_t *strm_ep;
+ struct name_dentry_t *name_ep;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ if (p_dir->dir == p_fs->root_dir) {
+ if ((!nls_uniname_cmp(sb, p_uniname->name,
+ (u16 *)UNI_CUR_DIR_NAME)) ||
+ (!nls_uniname_cmp(sb, p_uniname->name,
+ (u16 *)UNI_PAR_DIR_NAME)))
+ return -1; // special case, root directory itself
+ }
+
+ if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
+ dentries_per_clu = p_fs->dentries_in_root;
+ else
+ dentries_per_clu = p_fs->dentries_per_clu;
+
+ clu.dir = p_dir->dir;
+ clu.size = p_dir->size;
+ clu.flags = p_dir->flags;
+
+ p_fs->hint_uentry.dir = p_dir->dir;
+ p_fs->hint_uentry.entry = -1;
+
+ while (clu.dir != CLUSTER_32(~0)) {
+ if (p_fs->dev_ejected)
+ break;
+
+ while (i < dentries_per_clu) {
+ ep = get_entry_in_dir(sb, &clu, i, NULL);
+ if (!ep)
+ return -2;
+
+ entry_type = p_fs->fs_func->get_entry_type(ep);
+ step = 1;
+
+ if ((entry_type == TYPE_UNUSED) || (entry_type == TYPE_DELETED)) {
+ is_feasible_entry = FALSE;
+
+ if (p_fs->hint_uentry.entry == -1) {
+ num_empty++;
+
+ if (num_empty == 1) {
+ p_fs->hint_uentry.clu.dir = clu.dir;
+ p_fs->hint_uentry.clu.size = clu.size;
+ p_fs->hint_uentry.clu.flags = clu.flags;
+ }
+ if ((num_empty >= num_entries) || (entry_type == TYPE_UNUSED))
+ p_fs->hint_uentry.entry = dentry - (num_empty-1);
+ }
+
+ if (entry_type == TYPE_UNUSED)
+ return -2;
+ } else {
+ num_empty = 0;
+
+ if ((entry_type == TYPE_FILE) || (entry_type == TYPE_DIR)) {
+ file_ep = (struct file_dentry_t *) ep;
+ if ((type == TYPE_ALL) || (type == entry_type)) {
+ num_ext_entries = file_ep->num_ext;
+ is_feasible_entry = TRUE;
+ } else {
+ is_feasible_entry = FALSE;
+ step = file_ep->num_ext + 1;
+ }
+ } else if (entry_type == TYPE_STREAM) {
+ if (is_feasible_entry) {
+ strm_ep = (struct strm_dentry_t *)ep;
+ if (p_uniname->name_hash == GET16_A(strm_ep->name_hash) &&
+ p_uniname->name_len == strm_ep->name_len) {
+ order = 1;
+ } else {
+ is_feasible_entry = FALSE;
+ step = num_ext_entries;
+ }
+ }
+ } else if (entry_type == TYPE_EXTEND) {
+ if (is_feasible_entry) {
+ name_ep = (struct name_dentry_t *)ep;
+
+ if ((++order) == 2)
+ uniname = p_uniname->name;
+ else
+ uniname += 15;
+
+ len = extract_uni_name_from_name_entry(name_ep,
+ entry_uniname, order);
+
+ unichar = *(uniname+len);
+ *(uniname+len) = 0x0;
+
+ if (nls_uniname_cmp(sb, uniname, entry_uniname)) {
+ is_feasible_entry = FALSE;
+ step = num_ext_entries - order + 1;
+ } else if (order == num_ext_entries) {
+ p_fs->hint_uentry.dir = CLUSTER_32(~0);
+ p_fs->hint_uentry.entry = -1;
+ return dentry - (num_ext_entries);
+ }
+
+ *(uniname+len) = unichar;
+ }
+ } else {
+ is_feasible_entry = FALSE;
+ }
+ }
+
+ i += step;
+ dentry += step;
+ }
+
+ i -= dentries_per_clu;
+
+ if (p_dir->dir == CLUSTER_32(0))
+ break; /* FAT16 root_dir */
+
+ if (clu.flags == 0x03) {
+ if ((--clu.size) > 0)
+ clu.dir++;
+ else
+ clu.dir = CLUSTER_32(~0);
+ } else {
+ if (FAT_read(sb, clu.dir, &clu.dir) != 0)
+ return -2;
+ }
+ }
+
+ return -2;
+}
+
+s32 fat_count_ext_entries(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, struct dentry_t *p_entry)
+{
+ s32 count = 0;
+ u8 chksum;
+ struct dos_dentry_t *dos_ep = (struct dos_dentry_t *) p_entry;
+ struct ext_dentry_t *ext_ep;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ chksum = calc_checksum_1byte((void *) dos_ep->name, DOS_NAME_LENGTH, 0);
+
+ for (entry--; entry >= 0; entry--) {
+ ext_ep = (struct ext_dentry_t *)get_entry_in_dir(sb, p_dir,
+ entry, NULL);
+ if (!ext_ep)
+ return -1;
+
+ if ((p_fs->fs_func->get_entry_type((struct dentry_t *)ext_ep) ==
+ TYPE_EXTEND) && (ext_ep->checksum == chksum)) {
+ count++;
+ if (ext_ep->order > 0x40)
+ return count;
+ } else {
+ return count;
+ }
+ }
+
+ return count;
+}
+
+s32 exfat_count_ext_entries(struct super_block *sb, struct chain_t *p_dir,
+ s32 entry, struct dentry_t *p_entry)
+{
+ int i, count = 0;
+ u32 type;
+ struct file_dentry_t *file_ep = (struct file_dentry_t *)p_entry;
+ struct dentry_t *ext_ep;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ for (i = 0, entry++; i < file_ep->num_ext; i++, entry++) {
+ ext_ep = get_entry_in_dir(sb, p_dir, entry, NULL);
+ if (!ext_ep)
+ return -1;
+
+ type = p_fs->fs_func->get_entry_type(ext_ep);
+ if ((type == TYPE_EXTEND) || (type == TYPE_STREAM))
+ count++;
+ else
+ return count;
+ }
+
+ return count;
+}
+
+s32 count_dos_name_entries(struct super_block *sb, struct chain_t *p_dir,
+ u32 type)
+{
+ int i, count = 0;
+ s32 dentries_per_clu;
+ u32 entry_type;
+ struct chain_t clu;
+ struct dentry_t *ep;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
+ dentries_per_clu = p_fs->dentries_in_root;
+ else
+ dentries_per_clu = p_fs->dentries_per_clu;
+
+ clu.dir = p_dir->dir;
+ clu.size = p_dir->size;
+ clu.flags = p_dir->flags;
+
+ while (clu.dir != CLUSTER_32(~0)) {
+ if (p_fs->dev_ejected)
+ break;
+
+ for (i = 0; i < dentries_per_clu; i++) {
+ ep = get_entry_in_dir(sb, &clu, i, NULL);
+ if (!ep)
+ return -1;
+
+ entry_type = p_fs->fs_func->get_entry_type(ep);
+
+ if (entry_type == TYPE_UNUSED)
+ return count;
+ if (!(type & TYPE_CRITICAL_PRI) &&
+ !(type & TYPE_BENIGN_PRI))
+ continue;
+
+ if ((type == TYPE_ALL) || (type == entry_type))
+ count++;
+ }
+
+ if (p_dir->dir == CLUSTER_32(0))
+ break; /* FAT16 root_dir */
+
+ if (clu.flags == 0x03) {
+ if ((--clu.size) > 0)
+ clu.dir++;
+ else
+ clu.dir = CLUSTER_32(~0);
+ } else {
+ if (FAT_read(sb, clu.dir, &clu.dir) != 0)
+ return -1;
+ }
+ }
+
+ return count;
+}
+
+bool is_dir_empty(struct super_block *sb, struct chain_t *p_dir)
+{
+ int i, count = 0;
+ s32 dentries_per_clu;
+ u32 type;
+ struct chain_t clu;
+ struct dentry_t *ep;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
+ dentries_per_clu = p_fs->dentries_in_root;
+ else
+ dentries_per_clu = p_fs->dentries_per_clu;
+
+ clu.dir = p_dir->dir;
+ clu.size = p_dir->size;
+ clu.flags = p_dir->flags;
+
+ while (clu.dir != CLUSTER_32(~0)) {
+ if (p_fs->dev_ejected)
+ break;
+
+ for (i = 0; i < dentries_per_clu; i++) {
+ ep = get_entry_in_dir(sb, &clu, i, NULL);
+ if (!ep)
+ break;
+
+ type = p_fs->fs_func->get_entry_type(ep);
+
+ if (type == TYPE_UNUSED)
+ return TRUE;
+ if ((type != TYPE_FILE) && (type != TYPE_DIR))
+ continue;
+
+ if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
+ return FALSE;
+
+ if (p_fs->vol_type == EXFAT)
+ return FALSE;
+ if ((p_dir->dir == p_fs->root_dir) || ((++count) > 2))
+ return FALSE;
+ }
+
+ if (p_dir->dir == CLUSTER_32(0))
+ break; /* FAT16 root_dir */
+
+ if (clu.flags == 0x03) {
+ if ((--clu.size) > 0)
+ clu.dir++;
+ else
+ clu.dir = CLUSTER_32(~0);
+ }
+ if (FAT_read(sb, clu.dir, &clu.dir) != 0)
+ break;
+ }
+
+ return TRUE;
+}
+
+/*
+ * Name Conversion Functions
+ */
+
+/* input : dir, uni_name
+ * output : num_of_entry, dos_name(format : aaaaaa~1.bbb)
+ */
+s32 get_num_entries_and_dos_name(struct super_block *sb, struct chain_t *p_dir,
+ struct uni_name_t *p_uniname, s32 *entries,
+ struct dos_name_t *p_dosname)
+{
+ s32 ret, num_entries;
+ bool lossy = false;
+ char **r;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ num_entries = p_fs->fs_func->calc_num_entries(p_uniname);
+ if (num_entries == 0)
+ return FFS_INVALIDPATH;
+
+ if (p_fs->vol_type != EXFAT) {
+ nls_uniname_to_dosname(sb, p_dosname, p_uniname, &lossy);
+
+ if (lossy) {
+ ret = fat_generate_dos_name(sb, p_dir, p_dosname);
+ if (ret)
+ return ret;
+ } else {
+ for (r = reserved_names; *r; r++) {
+ if (!strncmp((void *)p_dosname->name, *r, 8))
+ return FFS_INVALIDPATH;
+ }
+
+ if (p_dosname->name_case != 0xFF)
+ num_entries = 1;
+ }
+
+ if (num_entries > 1)
+ p_dosname->name_case = 0x0;
+ }
+
+ *entries = num_entries;
+
+ return FFS_SUCCESS;
+}
+
+void get_uni_name_from_dos_entry(struct super_block *sb,
+ struct dos_dentry_t *ep,
+ struct uni_name_t *p_uniname, u8 mode)
+{
+ struct dos_name_t dos_name;
+
+ if (mode == 0x0)
+ dos_name.name_case = 0x0;
+ else
+ dos_name.name_case = ep->lcase;
+
+ memcpy(dos_name.name, ep->name, DOS_NAME_LENGTH);
+ nls_dosname_to_uniname(sb, p_uniname, &dos_name);
+}
+
+void fat_get_uni_name_from_ext_entry(struct super_block *sb,
+ struct chain_t *p_dir, s32 entry,
+ u16 *uniname)
+{
+ int i;
+ struct ext_dentry_t *ep;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ for (entry--, i = 1; entry >= 0; entry--, i++) {
+ ep = (struct ext_dentry_t *)get_entry_in_dir(sb, p_dir, entry,
+ NULL);
+ if (!ep)
+ return;
+
+ if (p_fs->fs_func->get_entry_type((struct dentry_t *)ep) ==
+ TYPE_EXTEND) {
+ extract_uni_name_from_ext_entry(ep, uniname, i);
+ if (ep->order > 0x40)
+ return;
+ } else {
+ return;
+ }
+
+ uniname += 13;
+ }
+}
+
+void exfat_get_uni_name_from_ext_entry(struct super_block *sb,
+ struct chain_t *p_dir, s32 entry,
+ u16 *uniname)
+{
+ int i;
+ struct dentry_t *ep;
+ struct entry_set_cache_t *es;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ es = get_entry_set_in_dir(sb, p_dir, entry, ES_ALL_ENTRIES, &ep);
+ if (es == NULL || es->num_entries < 3) {
+ if (es)
+ release_entry_set(es);
+ return;
+ }
+
+ ep += 2;
+
+ /*
+ * First entry : file entry
+ * Second entry : stream-extension entry
+ * Third entry : first file-name entry
+ * So, the index of first file-name dentry should start from 2.
+ */
+ for (i = 2; i < es->num_entries; i++, ep++) {
+ if (p_fs->fs_func->get_entry_type(ep) == TYPE_EXTEND)
+ extract_uni_name_from_name_entry((struct name_dentry_t *)
+ ep, uniname, i);
+ else
+ goto out;
+ uniname += 15;
+ }
+
+out:
+ release_entry_set(es);
+}
+
+s32 extract_uni_name_from_ext_entry(struct ext_dentry_t *ep, u16 *uniname,
+ s32 order)
+{
+ int i, len = 0;
+
+ for (i = 0; i < 10; i += 2) {
+ *uniname = GET16(ep->unicode_0_4 + i);
+ if (*uniname == 0x0)
+ return len;
+ uniname++;
+ len++;
+ }
+
+ if (order < 20) {
+ for (i = 0; i < 12; i += 2) {
+ *uniname = GET16_A(ep->unicode_5_10 + i);
+ if (*uniname == 0x0)
+ return len;
+ uniname++;
+ len++;
+ }
+ } else {
+ for (i = 0; i < 8; i += 2) {
+ *uniname = GET16_A(ep->unicode_5_10 + i);
+ if (*uniname == 0x0)
+ return len;
+ uniname++;
+ len++;
+ }
+ *uniname = 0x0; /* uniname[MAX_NAME_LENGTH-1] */
+ return len;
+ }
+
+ for (i = 0; i < 4; i += 2) {
+ *uniname = GET16_A(ep->unicode_11_12 + i);
+ if (*uniname == 0x0)
+ return len;
+ uniname++;
+ len++;
+ }
+
+ *uniname = 0x0;
+ return len;
+}
+
+s32 extract_uni_name_from_name_entry(struct name_dentry_t *ep, u16 *uniname,
+ s32 order)
+{
+ int i, len = 0;
+
+ for (i = 0; i < 30; i += 2) {
+ *uniname = GET16_A(ep->unicode_0_14 + i);
+ if (*uniname == 0x0)
+ return len;
+ uniname++;
+ len++;
+ }
+
+ *uniname = 0x0;
+ return len;
+}
+
+s32 fat_generate_dos_name(struct super_block *sb, struct chain_t *p_dir,
+ struct dos_name_t *p_dosname)
+{
+ int i, j, count = 0, count_begin = FALSE;
+ s32 dentries_per_clu;
+ u32 type;
+ u8 bmap[128/* 1 ~ 1023 */];
+ struct chain_t clu;
+ struct dos_dentry_t *ep;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ memset(bmap, 0, sizeof(bmap));
+ exfat_bitmap_set(bmap, 0);
+
+ if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
+ dentries_per_clu = p_fs->dentries_in_root;
+ else
+ dentries_per_clu = p_fs->dentries_per_clu;
+
+ clu.dir = p_dir->dir;
+ clu.flags = p_dir->flags;
+
+ while (clu.dir != CLUSTER_32(~0)) {
+ if (p_fs->dev_ejected)
+ break;
+
+ for (i = 0; i < dentries_per_clu; i++) {
+ ep = (struct dos_dentry_t *)get_entry_in_dir(sb, &clu,
+ i, NULL);
+ if (!ep)
+ return FFS_MEDIAERR;
+
+ type = p_fs->fs_func->get_entry_type((struct dentry_t *)
+ ep);
+
+ if (type == TYPE_UNUSED)
+ break;
+ if ((type != TYPE_FILE) && (type != TYPE_DIR))
+ continue;
+
+ count = 0;
+ count_begin = FALSE;
+
+ for (j = 0; j < 8; j++) {
+ if (ep->name[j] == ' ')
+ break;
+
+ if (ep->name[j] == '~') {
+ count_begin = TRUE;
+ } else if (count_begin) {
+ if ((ep->name[j] >= '0') &&
+ (ep->name[j] <= '9')) {
+ count = count * 10 +
+ (ep->name[j] - '0');
+ } else {
+ count = 0;
+ count_begin = FALSE;
+ }
+ }
+ }
+
+ if ((count > 0) && (count < 1024))
+ exfat_bitmap_set(bmap, count);
+ }
+
+ if (p_dir->dir == CLUSTER_32(0))
+ break; /* FAT16 root_dir */
+
+ if (FAT_read(sb, clu.dir, &clu.dir) != 0)
+ return FFS_MEDIAERR;
+ }
+
+ count = 0;
+ for (i = 0; i < 128; i++) {
+ if (bmap[i] != 0xFF) {
+ for (j = 0; j < 8; j++) {
+ if (exfat_bitmap_test(&bmap[i], j) == 0) {
+ count = (i << 3) + j;
+ break;
+ }
+ }
+ if (count != 0)
+ break;
+ }
+ }
+
+ if ((count == 0) || (count >= 1024))
+ return FFS_FILEEXIST;
+ fat_attach_count_to_dos_name(p_dosname->name, count);
+
+ /* Now dos_name has DOS~????.EXT */
+ return FFS_SUCCESS;
+}
+
+void fat_attach_count_to_dos_name(u8 *dosname, s32 count)
+{
+ int i, j, length;
+ char str_count[6];
+
+ snprintf(str_count, sizeof(str_count), "~%d", count);
+ length = strlen(str_count);
+
+ i = 0;
+ j = 0;
+ while (j <= (8 - length)) {
+ i = j;
+ if (dosname[j] == ' ')
+ break;
+ if (dosname[j] & 0x80)
+ j += 2;
+ else
+ j++;
+ }
+
+ for (j = 0; j < length; i++, j++)
+ dosname[i] = (u8)str_count[j];
+
+ if (i == 7)
+ dosname[7] = ' ';
+}
+
+s32 fat_calc_num_entries(struct uni_name_t *p_uniname)
+{
+ s32 len;
+
+ len = p_uniname->name_len;
+ if (len == 0)
+ return 0;
+
+ /* 1 dos name entry + extended entries */
+ return (len - 1) / 13 + 2;
+}
+
+s32 exfat_calc_num_entries(struct uni_name_t *p_uniname)
+{
+ s32 len;
+
+ len = p_uniname->name_len;
+ if (len == 0)
+ return 0;
+
+ /* 1 file entry + 1 stream entry + name entries */
+ return (len - 1) / 15 + 3;
+}
+
+u8 calc_checksum_1byte(void *data, s32 len, u8 chksum)
+{
+ int i;
+ u8 *c = (u8 *)data;
+
+ for (i = 0; i < len; i++, c++)
+ chksum = (((chksum & 1) << 7) | ((chksum & 0xFE) >> 1)) + *c;
+
+ return chksum;
+}
+
+u16 calc_checksum_2byte(void *data, s32 len, u16 chksum, s32 type)
+{
+ int i;
+ u8 *c = (u8 *)data;
+
+ switch (type) {
+ case CS_DIR_ENTRY:
+ for (i = 0; i < len; i++, c++) {
+ if ((i == 2) || (i == 3))
+ continue;
+ chksum = (((chksum & 1) << 15) |
+ ((chksum & 0xFFFE) >> 1)) + (u16)*c;
+ }
+ break;
+ default
+ :
+ for (i = 0; i < len; i++, c++)
+ chksum = (((chksum & 1) << 15) |
+ ((chksum & 0xFFFE) >> 1)) + (u16)*c;
+ }
+
+ return chksum;
+}
+
+u32 calc_checksum_4byte(void *data, s32 len, u32 chksum, s32 type)
+{
+ int i;
+ u8 *c = (u8 *)data;
+
+ switch (type) {
+ case CS_PBR_SECTOR:
+ for (i = 0; i < len; i++, c++) {
+ if ((i == 106) || (i == 107) || (i == 112))
+ continue;
+ chksum = (((chksum & 1) << 31) |
+ ((chksum & 0xFFFFFFFE) >> 1)) + (u32)*c;
+ }
+ break;
+ default
+ :
+ for (i = 0; i < len; i++, c++)
+ chksum = (((chksum & 1) << 31) |
+ ((chksum & 0xFFFFFFFE) >> 1)) + (u32)*c;
+ }
+
+ return chksum;
+}
+
+/*
+ * Name Resolution Functions
+ */
+
+/* return values of resolve_path()
+ * > 0 : return the length of the path
+ * < 0 : return error
+ */
+s32 resolve_path(struct inode *inode, char *path, struct chain_t *p_dir,
+ struct uni_name_t *p_uniname)
+{
+ bool lossy = false;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct file_id_t *fid = &(EXFAT_I(inode)->fid);
+
+ if (strlen(path) >= (MAX_NAME_LENGTH * MAX_CHARSET_SIZE))
+ return FFS_INVALIDPATH;
+
+ strcpy(name_buf, path);
+
+ nls_cstring_to_uniname(sb, p_uniname, name_buf, &lossy);
+ if (lossy)
+ return FFS_INVALIDPATH;
+
+ fid->size = i_size_read(inode);
+
+ p_dir->dir = fid->start_clu;
+ p_dir->size = (s32)(fid->size >> p_fs->cluster_size_bits);
+ p_dir->flags = fid->flags;
+
+ return FFS_SUCCESS;
+}
+
+/*
+ * File Operation Functions
+ */
+static struct fs_func fat_fs_func = {
+ .alloc_cluster = fat_alloc_cluster,
+ .free_cluster = fat_free_cluster,
+ .count_used_clusters = fat_count_used_clusters,
+
+ .init_dir_entry = fat_init_dir_entry,
+ .init_ext_entry = fat_init_ext_entry,
+ .find_dir_entry = fat_find_dir_entry,
+ .delete_dir_entry = fat_delete_dir_entry,
+ .get_uni_name_from_ext_entry = fat_get_uni_name_from_ext_entry,
+ .count_ext_entries = fat_count_ext_entries,
+ .calc_num_entries = fat_calc_num_entries,
+
+ .get_entry_type = fat_get_entry_type,
+ .set_entry_type = fat_set_entry_type,
+ .get_entry_attr = fat_get_entry_attr,
+ .set_entry_attr = fat_set_entry_attr,
+ .get_entry_flag = fat_get_entry_flag,
+ .set_entry_flag = fat_set_entry_flag,
+ .get_entry_clu0 = fat_get_entry_clu0,
+ .set_entry_clu0 = fat_set_entry_clu0,
+ .get_entry_size = fat_get_entry_size,
+ .set_entry_size = fat_set_entry_size,
+ .get_entry_time = fat_get_entry_time,
+ .set_entry_time = fat_set_entry_time,
+};
+
+s32 fat16_mount(struct super_block *sb, struct pbr_sector_t *p_pbr)
+{
+ s32 num_reserved, num_root_sectors;
+ struct bpb16_t *p_bpb = (struct bpb16_t *)p_pbr->bpb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ if (p_bpb->num_fats == 0)
+ return FFS_FORMATERR;
+
+ num_root_sectors = GET16(p_bpb->num_root_entries) << DENTRY_SIZE_BITS;
+ num_root_sectors = ((num_root_sectors - 1) >>
+ p_bd->sector_size_bits) + 1;
+
+ p_fs->sectors_per_clu = p_bpb->sectors_per_clu;
+ p_fs->sectors_per_clu_bits = ilog2(p_bpb->sectors_per_clu);
+ p_fs->cluster_size_bits = p_fs->sectors_per_clu_bits +
+ p_bd->sector_size_bits;
+ p_fs->cluster_size = 1 << p_fs->cluster_size_bits;
+
+ p_fs->num_FAT_sectors = GET16(p_bpb->num_fat_sectors);
+
+ p_fs->FAT1_start_sector = p_fs->PBR_sector + GET16(p_bpb->num_reserved);
+ if (p_bpb->num_fats == 1)
+ p_fs->FAT2_start_sector = p_fs->FAT1_start_sector;
+ else
+ p_fs->FAT2_start_sector = p_fs->FAT1_start_sector +
+ p_fs->num_FAT_sectors;
+
+ p_fs->root_start_sector = p_fs->FAT2_start_sector +
+ p_fs->num_FAT_sectors;
+ p_fs->data_start_sector = p_fs->root_start_sector + num_root_sectors;
+
+ p_fs->num_sectors = GET16(p_bpb->num_sectors);
+ if (p_fs->num_sectors == 0)
+ p_fs->num_sectors = GET32(p_bpb->num_huge_sectors);
+
+ num_reserved = p_fs->data_start_sector - p_fs->PBR_sector;
+ p_fs->num_clusters = ((p_fs->num_sectors - num_reserved) >>
+ p_fs->sectors_per_clu_bits) + 2;
+ /* because the cluster index starts with 2 */
+
+ if (p_fs->num_clusters < FAT12_THRESHOLD)
+ p_fs->vol_type = FAT12;
+ else
+ p_fs->vol_type = FAT16;
+ p_fs->vol_id = GET32(p_bpb->vol_serial);
+
+ p_fs->root_dir = 0;
+ p_fs->dentries_in_root = GET16(p_bpb->num_root_entries);
+ p_fs->dentries_per_clu = 1 << (p_fs->cluster_size_bits -
+ DENTRY_SIZE_BITS);
+
+ p_fs->vol_flag = VOL_CLEAN;
+ p_fs->clu_srch_ptr = 2;
+ p_fs->used_clusters = (u32)~0;
+
+ p_fs->fs_func = &fat_fs_func;
+
+ return FFS_SUCCESS;
+}
+
+s32 fat32_mount(struct super_block *sb, struct pbr_sector_t *p_pbr)
+{
+ s32 num_reserved;
+ struct bpb32_t *p_bpb = (struct bpb32_t *)p_pbr->bpb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ if (p_bpb->num_fats == 0)
+ return FFS_FORMATERR;
+
+ p_fs->sectors_per_clu = p_bpb->sectors_per_clu;
+ p_fs->sectors_per_clu_bits = ilog2(p_bpb->sectors_per_clu);
+ p_fs->cluster_size_bits = p_fs->sectors_per_clu_bits +
+ p_bd->sector_size_bits;
+ p_fs->cluster_size = 1 << p_fs->cluster_size_bits;
+
+ p_fs->num_FAT_sectors = GET32(p_bpb->num_fat32_sectors);
+
+ p_fs->FAT1_start_sector = p_fs->PBR_sector + GET16(p_bpb->num_reserved);
+ if (p_bpb->num_fats == 1)
+ p_fs->FAT2_start_sector = p_fs->FAT1_start_sector;
+ else
+ p_fs->FAT2_start_sector = p_fs->FAT1_start_sector +
+ p_fs->num_FAT_sectors;
+
+ p_fs->root_start_sector = p_fs->FAT2_start_sector +
+ p_fs->num_FAT_sectors;
+ p_fs->data_start_sector = p_fs->root_start_sector;
+
+ p_fs->num_sectors = GET32(p_bpb->num_huge_sectors);
+ num_reserved = p_fs->data_start_sector - p_fs->PBR_sector;
+
+ p_fs->num_clusters = ((p_fs->num_sectors - num_reserved) >>
+ p_fs->sectors_per_clu_bits) + 2;
+ /* because the cluster index starts with 2 */
+
+ p_fs->vol_type = FAT32;
+ p_fs->vol_id = GET32(p_bpb->vol_serial);
+
+ p_fs->root_dir = GET32(p_bpb->root_cluster);
+ p_fs->dentries_in_root = 0;
+ p_fs->dentries_per_clu = 1 << (p_fs->cluster_size_bits -
+ DENTRY_SIZE_BITS);
+
+ p_fs->vol_flag = VOL_CLEAN;
+ p_fs->clu_srch_ptr = 2;
+ p_fs->used_clusters = (u32)~0;
+
+ p_fs->fs_func = &fat_fs_func;
+
+ return FFS_SUCCESS;
+}
+
+static struct fs_func exfat_fs_func = {
+ .alloc_cluster = exfat_alloc_cluster,
+ .free_cluster = exfat_free_cluster,
+ .count_used_clusters = exfat_count_used_clusters,
+
+ .init_dir_entry = exfat_init_dir_entry,
+ .init_ext_entry = exfat_init_ext_entry,
+ .find_dir_entry = exfat_find_dir_entry,
+ .delete_dir_entry = exfat_delete_dir_entry,
+ .get_uni_name_from_ext_entry = exfat_get_uni_name_from_ext_entry,
+ .count_ext_entries = exfat_count_ext_entries,
+ .calc_num_entries = exfat_calc_num_entries,
+
+ .get_entry_type = exfat_get_entry_type,
+ .set_entry_type = exfat_set_entry_type,
+ .get_entry_attr = exfat_get_entry_attr,
+ .set_entry_attr = exfat_set_entry_attr,
+ .get_entry_flag = exfat_get_entry_flag,
+ .set_entry_flag = exfat_set_entry_flag,
+ .get_entry_clu0 = exfat_get_entry_clu0,
+ .set_entry_clu0 = exfat_set_entry_clu0,
+ .get_entry_size = exfat_get_entry_size,
+ .set_entry_size = exfat_set_entry_size,
+ .get_entry_time = exfat_get_entry_time,
+ .set_entry_time = exfat_set_entry_time,
+};
+
+s32 exfat_mount(struct super_block *sb, struct pbr_sector_t *p_pbr)
+{
+ struct bpbex_t *p_bpb = (struct bpbex_t *)p_pbr->bpb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ if (p_bpb->num_fats == 0)
+ return FFS_FORMATERR;
+
+ p_fs->sectors_per_clu = 1 << p_bpb->sectors_per_clu_bits;
+ p_fs->sectors_per_clu_bits = p_bpb->sectors_per_clu_bits;
+ p_fs->cluster_size_bits = p_fs->sectors_per_clu_bits +
+ p_bd->sector_size_bits;
+ p_fs->cluster_size = 1 << p_fs->cluster_size_bits;
+
+ p_fs->num_FAT_sectors = GET32(p_bpb->fat_length);
+
+ p_fs->FAT1_start_sector = p_fs->PBR_sector + GET32(p_bpb->fat_offset);
+ if (p_bpb->num_fats == 1)
+ p_fs->FAT2_start_sector = p_fs->FAT1_start_sector;
+ else
+ p_fs->FAT2_start_sector = p_fs->FAT1_start_sector +
+ p_fs->num_FAT_sectors;
+
+ p_fs->root_start_sector = p_fs->PBR_sector + GET32(p_bpb->clu_offset);
+ p_fs->data_start_sector = p_fs->root_start_sector;
+
+ p_fs->num_sectors = GET64(p_bpb->vol_length);
+ p_fs->num_clusters = GET32(p_bpb->clu_count) + 2;
+ /* because the cluster index starts with 2 */
+
+ p_fs->vol_type = EXFAT;
+ p_fs->vol_id = GET32(p_bpb->vol_serial);
+
+ p_fs->root_dir = GET32(p_bpb->root_cluster);
+ p_fs->dentries_in_root = 0;
+ p_fs->dentries_per_clu = 1 << (p_fs->cluster_size_bits -
+ DENTRY_SIZE_BITS);
+
+ p_fs->vol_flag = (u32)GET16(p_bpb->vol_flags);
+ p_fs->clu_srch_ptr = 2;
+ p_fs->used_clusters = (u32)~0;
+
+ p_fs->fs_func = &exfat_fs_func;
+
+ return FFS_SUCCESS;
+}
+
+s32 create_dir(struct inode *inode, struct chain_t *p_dir,
+ struct uni_name_t *p_uniname, struct file_id_t *fid)
+{
+ s32 ret, dentry, num_entries;
+ u64 size;
+ struct chain_t clu;
+ struct dos_name_t dos_name, dot_name;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct fs_func *fs_func = p_fs->fs_func;
+
+ ret = get_num_entries_and_dos_name(sb, p_dir, p_uniname, &num_entries,
+ &dos_name);
+ if (ret)
+ return ret;
+
+ /* find_empty_entry must be called before alloc_cluster */
+ dentry = find_empty_entry(inode, p_dir, num_entries);
+ if (dentry < 0)
+ return FFS_FULL;
+
+ clu.dir = CLUSTER_32(~0);
+ clu.size = 0;
+ clu.flags = (p_fs->vol_type == EXFAT) ? 0x03 : 0x01;
+
+ /* (1) allocate a cluster */
+ ret = fs_func->alloc_cluster(sb, 1, &clu);
+ if (ret < 0)
+ return FFS_MEDIAERR;
+ else if (ret == 0)
+ return FFS_FULL;
+
+ ret = clear_cluster(sb, clu.dir);
+ if (ret != FFS_SUCCESS)
+ return ret;
+
+ if (p_fs->vol_type == EXFAT) {
+ size = p_fs->cluster_size;
+ } else {
+ size = 0;
+
+ /* initialize the . and .. entry
+ * Information for . points to itself
+ * Information for .. points to parent dir
+ */
+
+ dot_name.name_case = 0x0;
+ memcpy(dot_name.name, DOS_CUR_DIR_NAME, DOS_NAME_LENGTH);
+
+ ret = fs_func->init_dir_entry(sb, &clu, 0, TYPE_DIR, clu.dir,
+ 0);
+ if (ret != FFS_SUCCESS)
+ return ret;
+
+ ret = fs_func->init_ext_entry(sb, &clu, 0, 1, NULL, &dot_name);
+ if (ret != FFS_SUCCESS)
+ return ret;
+
+ memcpy(dot_name.name, DOS_PAR_DIR_NAME, DOS_NAME_LENGTH);
+
+ if (p_dir->dir == p_fs->root_dir)
+ ret = fs_func->init_dir_entry(sb, &clu, 1, TYPE_DIR,
+ CLUSTER_32(0), 0);
+ else
+ ret = fs_func->init_dir_entry(sb, &clu, 1, TYPE_DIR,
+ p_dir->dir, 0);
+
+ if (ret != FFS_SUCCESS)
+ return ret;
+
+ ret = p_fs->fs_func->init_ext_entry(sb, &clu, 1, 1, NULL,
+ &dot_name);
+ if (ret != FFS_SUCCESS)
+ return ret;
+ }
+
+ /* (2) update the directory entry */
+ /* make sub-dir entry in parent directory */
+ ret = fs_func->init_dir_entry(sb, p_dir, dentry, TYPE_DIR, clu.dir,
+ size);
+ if (ret != FFS_SUCCESS)
+ return ret;
+
+ ret = fs_func->init_ext_entry(sb, p_dir, dentry, num_entries, p_uniname,
+ &dos_name);
+ if (ret != FFS_SUCCESS)
+ return ret;
+
+ fid->dir.dir = p_dir->dir;
+ fid->dir.size = p_dir->size;
+ fid->dir.flags = p_dir->flags;
+ fid->entry = dentry;
+
+ fid->attr = ATTR_SUBDIR;
+ fid->flags = (p_fs->vol_type == EXFAT) ? 0x03 : 0x01;
+ fid->size = size;
+ fid->start_clu = clu.dir;
+
+ fid->type = TYPE_DIR;
+ fid->rwoffset = 0;
+ fid->hint_last_off = -1;
+
+ return FFS_SUCCESS;
+}
+
+s32 create_file(struct inode *inode, struct chain_t *p_dir,
+ struct uni_name_t *p_uniname, u8 mode, struct file_id_t *fid)
+{
+ s32 ret, dentry, num_entries;
+ struct dos_name_t dos_name;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct fs_func *fs_func = p_fs->fs_func;
+
+ ret = get_num_entries_and_dos_name(sb, p_dir, p_uniname, &num_entries,
+ &dos_name);
+ if (ret)
+ return ret;
+
+ /* find_empty_entry must be called before alloc_cluster() */
+ dentry = find_empty_entry(inode, p_dir, num_entries);
+ if (dentry < 0)
+ return FFS_FULL;
+
+ /* (1) update the directory entry */
+ /* fill the dos name directory entry information of the created file.
+ * the first cluster is not determined yet. (0)
+ */
+ ret = fs_func->init_dir_entry(sb, p_dir, dentry, TYPE_FILE | mode,
+ CLUSTER_32(0), 0);
+ if (ret != FFS_SUCCESS)
+ return ret;
+
+ ret = fs_func->init_ext_entry(sb, p_dir, dentry, num_entries, p_uniname,
+ &dos_name);
+ if (ret != FFS_SUCCESS)
+ return ret;
+
+ fid->dir.dir = p_dir->dir;
+ fid->dir.size = p_dir->size;
+ fid->dir.flags = p_dir->flags;
+ fid->entry = dentry;
+
+ fid->attr = ATTR_ARCHIVE | mode;
+ fid->flags = (p_fs->vol_type == EXFAT) ? 0x03 : 0x01;
+ fid->size = 0;
+ fid->start_clu = CLUSTER_32(~0);
+
+ fid->type = TYPE_FILE;
+ fid->rwoffset = 0;
+ fid->hint_last_off = -1;
+
+ return FFS_SUCCESS;
+}
+
+void remove_file(struct inode *inode, struct chain_t *p_dir, s32 entry)
+{
+ s32 num_entries;
+ sector_t sector;
+ struct dentry_t *ep;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct fs_func *fs_func = p_fs->fs_func;
+
+ ep = get_entry_in_dir(sb, p_dir, entry, §or);
+ if (!ep)
+ return;
+
+ buf_lock(sb, sector);
+
+ /* buf_lock() before call count_ext_entries() */
+ num_entries = fs_func->count_ext_entries(sb, p_dir, entry, ep);
+ if (num_entries < 0) {
+ buf_unlock(sb, sector);
+ return;
+ }
+ num_entries++;
+
+ buf_unlock(sb, sector);
+
+ /* (1) update the directory entry */
+ fs_func->delete_dir_entry(sb, p_dir, entry, 0, num_entries);
+}
+
+s32 rename_file(struct inode *inode, struct chain_t *p_dir, s32 oldentry,
+ struct uni_name_t *p_uniname, struct file_id_t *fid)
+{
+ s32 ret, newentry = -1, num_old_entries, num_new_entries;
+ sector_t sector_old, sector_new;
+ struct dos_name_t dos_name;
+ struct dentry_t *epold, *epnew;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct fs_func *fs_func = p_fs->fs_func;
+
+ epold = get_entry_in_dir(sb, p_dir, oldentry, §or_old);
+ if (!epold)
+ return FFS_MEDIAERR;
+
+ buf_lock(sb, sector_old);
+
+ /* buf_lock() before call count_ext_entries() */
+ num_old_entries = fs_func->count_ext_entries(sb, p_dir, oldentry,
+ epold);
+ if (num_old_entries < 0) {
+ buf_unlock(sb, sector_old);
+ return FFS_MEDIAERR;
+ }
+ num_old_entries++;
+
+ ret = get_num_entries_and_dos_name(sb, p_dir, p_uniname,
+ &num_new_entries, &dos_name);
+ if (ret) {
+ buf_unlock(sb, sector_old);
+ return ret;
+ }
+
+ if (num_old_entries < num_new_entries) {
+ newentry = find_empty_entry(inode, p_dir, num_new_entries);
+ if (newentry < 0) {
+ buf_unlock(sb, sector_old);
+ return FFS_FULL;
+ }
+
+ epnew = get_entry_in_dir(sb, p_dir, newentry, §or_new);
+ if (!epnew) {
+ buf_unlock(sb, sector_old);
+ return FFS_MEDIAERR;
+ }
+
+ memcpy((void *)epnew, (void *)epold, DENTRY_SIZE);
+ if (fs_func->get_entry_type(epnew) == TYPE_FILE) {
+ fs_func->set_entry_attr(epnew,
+ fs_func->get_entry_attr(epnew) |
+ ATTR_ARCHIVE);
+ fid->attr |= ATTR_ARCHIVE;
+ }
+ buf_modify(sb, sector_new);
+ buf_unlock(sb, sector_old);
+
+ if (p_fs->vol_type == EXFAT) {
+ epold = get_entry_in_dir(sb, p_dir, oldentry + 1,
+ §or_old);
+ buf_lock(sb, sector_old);
+ epnew = get_entry_in_dir(sb, p_dir, newentry + 1,
+ §or_new);
+
+ if (!epold || !epnew) {
+ buf_unlock(sb, sector_old);
+ return FFS_MEDIAERR;
+ }
+
+ memcpy((void *)epnew, (void *)epold, DENTRY_SIZE);
+ buf_modify(sb, sector_new);
+ buf_unlock(sb, sector_old);
+ }
+
+ ret = fs_func->init_ext_entry(sb, p_dir, newentry,
+ num_new_entries, p_uniname,
+ &dos_name);
+ if (ret != FFS_SUCCESS)
+ return ret;
+
+ fs_func->delete_dir_entry(sb, p_dir, oldentry, 0,
+ num_old_entries);
+ fid->entry = newentry;
+ } else {
+ if (fs_func->get_entry_type(epold) == TYPE_FILE) {
+ fs_func->set_entry_attr(epold,
+ fs_func->get_entry_attr(epold) |
+ ATTR_ARCHIVE);
+ fid->attr |= ATTR_ARCHIVE;
+ }
+ buf_modify(sb, sector_old);
+ buf_unlock(sb, sector_old);
+
+ ret = fs_func->init_ext_entry(sb, p_dir, oldentry,
+ num_new_entries, p_uniname,
+ &dos_name);
+ if (ret != FFS_SUCCESS)
+ return ret;
+
+ fs_func->delete_dir_entry(sb, p_dir, oldentry, num_new_entries,
+ num_old_entries);
+ }
+
+ return FFS_SUCCESS;
+}
+
+s32 move_file(struct inode *inode, struct chain_t *p_olddir, s32 oldentry,
+ struct chain_t *p_newdir, struct uni_name_t *p_uniname,
+ struct file_id_t *fid)
+{
+ s32 ret, newentry, num_new_entries, num_old_entries;
+ sector_t sector_mov, sector_new;
+ struct chain_t clu;
+ struct dos_name_t dos_name;
+ struct dentry_t *epmov, *epnew;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct fs_func *fs_func = p_fs->fs_func;
+
+ epmov = get_entry_in_dir(sb, p_olddir, oldentry, §or_mov);
+ if (!epmov)
+ return FFS_MEDIAERR;
+
+ /* check if the source and target directory is the same */
+ if (fs_func->get_entry_type(epmov) == TYPE_DIR &&
+ fs_func->get_entry_clu0(epmov) == p_newdir->dir)
+ return FFS_INVALIDPATH;
+
+ buf_lock(sb, sector_mov);
+
+ /* buf_lock() before call count_ext_entries() */
+ num_old_entries = fs_func->count_ext_entries(sb, p_olddir, oldentry,
+ epmov);
+ if (num_old_entries < 0) {
+ buf_unlock(sb, sector_mov);
+ return FFS_MEDIAERR;
+ }
+ num_old_entries++;
+
+ ret = get_num_entries_and_dos_name(sb, p_newdir, p_uniname,
+ &num_new_entries, &dos_name);
+ if (ret) {
+ buf_unlock(sb, sector_mov);
+ return ret;
+ }
+
+ newentry = find_empty_entry(inode, p_newdir, num_new_entries);
+ if (newentry < 0) {
+ buf_unlock(sb, sector_mov);
+ return FFS_FULL;
+ }
+
+ epnew = get_entry_in_dir(sb, p_newdir, newentry, §or_new);
+ if (!epnew) {
+ buf_unlock(sb, sector_mov);
+ return FFS_MEDIAERR;
+ }
+
+ memcpy((void *)epnew, (void *)epmov, DENTRY_SIZE);
+ if (fs_func->get_entry_type(epnew) == TYPE_FILE) {
+ fs_func->set_entry_attr(epnew, fs_func->get_entry_attr(epnew) |
+ ATTR_ARCHIVE);
+ fid->attr |= ATTR_ARCHIVE;
+ }
+ buf_modify(sb, sector_new);
+ buf_unlock(sb, sector_mov);
+
+ if (p_fs->vol_type == EXFAT) {
+ epmov = get_entry_in_dir(sb, p_olddir, oldentry + 1,
+ §or_mov);
+ buf_lock(sb, sector_mov);
+ epnew = get_entry_in_dir(sb, p_newdir, newentry + 1,
+ §or_new);
+ if (!epmov || !epnew) {
+ buf_unlock(sb, sector_mov);
+ return FFS_MEDIAERR;
+ }
+
+ memcpy((void *)epnew, (void *)epmov, DENTRY_SIZE);
+ buf_modify(sb, sector_new);
+ buf_unlock(sb, sector_mov);
+ } else if (fs_func->get_entry_type(epnew) == TYPE_DIR) {
+ /* change ".." pointer to new parent dir */
+ clu.dir = fs_func->get_entry_clu0(epnew);
+ clu.flags = 0x01;
+
+ epnew = get_entry_in_dir(sb, &clu, 1, §or_new);
+ if (!epnew)
+ return FFS_MEDIAERR;
+
+ if (p_newdir->dir == p_fs->root_dir)
+ fs_func->set_entry_clu0(epnew, CLUSTER_32(0));
+ else
+ fs_func->set_entry_clu0(epnew, p_newdir->dir);
+ buf_modify(sb, sector_new);
+ }
+
+ ret = fs_func->init_ext_entry(sb, p_newdir, newentry, num_new_entries,
+ p_uniname, &dos_name);
+ if (ret != FFS_SUCCESS)
+ return ret;
+
+ fs_func->delete_dir_entry(sb, p_olddir, oldentry, 0, num_old_entries);
+
+ fid->dir.dir = p_newdir->dir;
+ fid->dir.size = p_newdir->size;
+ fid->dir.flags = p_newdir->flags;
+
+ fid->entry = newentry;
+
+ return FFS_SUCCESS;
+}
+
+/*
+ * Sector Read/Write Functions
+ */
+
+int sector_read(struct super_block *sb, sector_t sec, struct buffer_head **bh,
+ bool read)
+{
+ s32 ret = FFS_MEDIAERR;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ if ((sec >= (p_fs->PBR_sector + p_fs->num_sectors)) &&
+ (p_fs->num_sectors > 0)) {
+ pr_err("[EXFAT] %s: out of range error! (sec = %llu)\n",
+ __func__, (unsigned long long)sec);
+ fs_error(sb);
+ return ret;
+ }
+
+ if (!p_fs->dev_ejected) {
+ ret = bdev_read(sb, sec, bh, 1, read);
+ if (ret != FFS_SUCCESS)
+ p_fs->dev_ejected = TRUE;
+ }
+
+ return ret;
+}
+
+int sector_write(struct super_block *sb, sector_t sec, struct buffer_head *bh,
+ bool sync)
+{
+ s32 ret = FFS_MEDIAERR;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ if (sec >= (p_fs->PBR_sector + p_fs->num_sectors) &&
+ (p_fs->num_sectors > 0)) {
+ pr_err("[EXFAT] %s: out of range error! (sec = %llu)\n",
+ __func__, (unsigned long long)sec);
+ fs_error(sb);
+ return ret;
+ }
+
+ if (!bh) {
+ pr_err("[EXFAT] %s: bh is NULL!\n", __func__);
+ fs_error(sb);
+ return ret;
+ }
+
+ if (!p_fs->dev_ejected) {
+ ret = bdev_write(sb, sec, bh, 1, sync);
+ if (ret != FFS_SUCCESS)
+ p_fs->dev_ejected = TRUE;
+ }
+
+ return ret;
+}
+
+int multi_sector_read(struct super_block *sb, sector_t sec,
+ struct buffer_head **bh, s32 num_secs, bool read)
+{
+ s32 ret = FFS_MEDIAERR;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ if (((sec + num_secs) > (p_fs->PBR_sector + p_fs->num_sectors)) &&
+ (p_fs->num_sectors > 0)) {
+ pr_err("[EXFAT] %s: out of range error! (sec = %llu, num_secs = %d)\n",
+ __func__, (unsigned long long)sec, num_secs);
+ fs_error(sb);
+ return ret;
+ }
+
+ if (!p_fs->dev_ejected) {
+ ret = bdev_read(sb, sec, bh, num_secs, read);
+ if (ret != FFS_SUCCESS)
+ p_fs->dev_ejected = TRUE;
+ }
+
+ return ret;
+}
+
+int multi_sector_write(struct super_block *sb, sector_t sec,
+ struct buffer_head *bh, s32 num_secs, bool sync)
+{
+ s32 ret = FFS_MEDIAERR;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ if ((sec + num_secs) > (p_fs->PBR_sector + p_fs->num_sectors) &&
+ (p_fs->num_sectors > 0)) {
+ pr_err("[EXFAT] %s: out of range error! (sec = %llu, num_secs = %d)\n",
+ __func__, (unsigned long long)sec, num_secs);
+ fs_error(sb);
+ return ret;
+ }
+ if (!bh) {
+ pr_err("[EXFAT] %s: bh is NULL!\n", __func__);
+ fs_error(sb);
+ return ret;
+ }
+
+ if (!p_fs->dev_ejected) {
+ ret = bdev_write(sb, sec, bh, num_secs, sync);
+ if (ret != FFS_SUCCESS)
+ p_fs->dev_ejected = TRUE;
+ }
+
+ return ret;
+}
diff --git a/drivers/staging/exfat/exfat_nls.c b/drivers/staging/exfat/exfat_nls.c
new file mode 100644
index 0000000000..2ca5861615
--- /dev/null
+++ b/drivers/staging/exfat/exfat_nls.c
@@ -0,0 +1,404 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
+ */
+
+#include <linux/string.h>
+#include <linux/nls.h>
+#include "exfat.h"
+
+static u16 bad_dos_chars[] = {
+ /* + , ; = [ ] */
+ 0x002B, 0x002C, 0x003B, 0x003D, 0x005B, 0x005D,
+ 0xFF0B, 0xFF0C, 0xFF1B, 0xFF1D, 0xFF3B, 0xFF3D,
+ 0
+};
+
+static u16 bad_uni_chars[] = {
+ /* " * / : < > ? \ | */
+ 0x0022, 0x002A, 0x002F, 0x003A,
+ 0x003C, 0x003E, 0x003F, 0x005C, 0x007C,
+ 0
+};
+
+static int convert_ch_to_uni(struct nls_table *nls, u16 *uni, u8 *ch,
+ bool *lossy)
+{
+ int len;
+
+ *uni = 0x0;
+
+ if (ch[0] < 0x80) {
+ *uni = (u16)ch[0];
+ return 1;
+ }
+
+ len = nls->char2uni(ch, NLS_MAX_CHARSET_SIZE, uni);
+ if (len < 0) {
+ /* conversion failed */
+ pr_info("%s: fail to use nls\n", __func__);
+ if (lossy)
+ *lossy = true;
+ *uni = (u16)'_';
+ if (!strcmp(nls->charset, "utf8"))
+ return 1;
+ else
+ return 2;
+ }
+
+ return len;
+}
+
+static int convert_uni_to_ch(struct nls_table *nls, u8 *ch, u16 uni,
+ bool *lossy)
+{
+ int len;
+
+ ch[0] = 0x0;
+
+ if (uni < 0x0080) {
+ ch[0] = (u8)uni;
+ return 1;
+ }
+
+ len = nls->uni2char(uni, ch, NLS_MAX_CHARSET_SIZE);
+ if (len < 0) {
+ /* conversion failed */
+ pr_info("%s: fail to use nls\n", __func__);
+ if (lossy)
+ *lossy = true;
+ ch[0] = '_';
+ return 1;
+ }
+
+ return len;
+}
+
+u16 nls_upper(struct super_block *sb, u16 a)
+{
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ if (EXFAT_SB(sb)->options.casesensitive)
+ return a;
+ if (p_fs->vol_utbl && p_fs->vol_utbl[get_col_index(a)])
+ return p_fs->vol_utbl[get_col_index(a)][get_row_index(a)];
+ else
+ return a;
+}
+
+static u16 *nls_wstrchr(u16 *str, u16 wchar)
+{
+ while (*str) {
+ if (*(str++) == wchar)
+ return str;
+ }
+
+ return NULL;
+}
+
+int nls_dosname_cmp(struct super_block *sb, u8 *a, u8 *b)
+{
+ return strncmp(a, b, DOS_NAME_LENGTH);
+}
+
+int nls_uniname_cmp(struct super_block *sb, u16 *a, u16 *b)
+{
+ int i;
+
+ for (i = 0; i < MAX_NAME_LENGTH; i++, a++, b++) {
+ if (nls_upper(sb, *a) != nls_upper(sb, *b))
+ return 1;
+ if (*a == 0x0)
+ return 0;
+ }
+ return 0;
+}
+
+void nls_uniname_to_dosname(struct super_block *sb,
+ struct dos_name_t *p_dosname,
+ struct uni_name_t *p_uniname, bool *p_lossy)
+{
+ int i, j, len;
+ bool lossy = false;
+ u8 buf[MAX_CHARSET_SIZE];
+ u8 lower = 0, upper = 0;
+ u8 *dosname = p_dosname->name;
+ u16 *uniname = p_uniname->name;
+ u16 *p, *last_period;
+ struct nls_table *nls = EXFAT_SB(sb)->nls_disk;
+
+ for (i = 0; i < DOS_NAME_LENGTH; i++)
+ *(dosname + i) = ' ';
+
+ if (!nls_uniname_cmp(sb, uniname, (u16 *)UNI_CUR_DIR_NAME)) {
+ *(dosname) = '.';
+ p_dosname->name_case = 0x0;
+ if (p_lossy)
+ *p_lossy = false;
+ return;
+ }
+
+ if (!nls_uniname_cmp(sb, uniname, (u16 *)UNI_PAR_DIR_NAME)) {
+ *(dosname) = '.';
+ *(dosname + 1) = '.';
+ p_dosname->name_case = 0x0;
+ if (p_lossy)
+ *p_lossy = false;
+ return;
+ }
+
+ /* search for the last embedded period */
+ last_period = NULL;
+ for (p = uniname; *p; p++) {
+ if (*p == (u16)'.')
+ last_period = p;
+ }
+
+ i = 0;
+ while (i < DOS_NAME_LENGTH) {
+ if (i == 8) {
+ if (!last_period)
+ break;
+
+ if (uniname <= last_period) {
+ if (uniname < last_period)
+ lossy = true;
+ uniname = last_period + 1;
+ }
+ }
+
+ if (*uniname == (u16)'\0') {
+ break;
+ } else if (*uniname == (u16)' ') {
+ lossy = true;
+ } else if (*uniname == (u16)'.') {
+ if (uniname < last_period)
+ lossy = true;
+ else
+ i = 8;
+ } else if (nls_wstrchr(bad_dos_chars, *uniname)) {
+ lossy = true;
+ *(dosname + i) = '_';
+ i++;
+ } else {
+ len = convert_uni_to_ch(nls, buf, *uniname, &lossy);
+
+ if (len > 1) {
+ if ((i >= 8) && ((i + len) > DOS_NAME_LENGTH))
+ break;
+
+ if ((i < 8) && ((i + len) > 8)) {
+ i = 8;
+ continue;
+ }
+
+ lower = 0xFF;
+
+ for (j = 0; j < len; j++, i++)
+ *(dosname + i) = *(buf + j);
+ } else { /* len == 1 */
+ if ((*buf >= 'a') && (*buf <= 'z')) {
+ *(dosname + i) = *buf - ('a' - 'A');
+
+ if (i < 8)
+ lower |= 0x08;
+ else
+ lower |= 0x10;
+ } else if ((*buf >= 'A') && (*buf <= 'Z')) {
+ *(dosname + i) = *buf;
+
+ if (i < 8)
+ upper |= 0x08;
+ else
+ upper |= 0x10;
+ } else {
+ *(dosname + i) = *buf;
+ }
+ i++;
+ }
+ }
+
+ uniname++;
+ }
+
+ if (*dosname == 0xE5)
+ *dosname = 0x05;
+
+ if (*uniname != 0x0)
+ lossy = TRUE;
+
+ if (upper & lower)
+ p_dosname->name_case = 0xFF;
+ else
+ p_dosname->name_case = lower;
+
+ if (p_lossy)
+ *p_lossy = lossy;
+}
+
+void nls_dosname_to_uniname(struct super_block *sb,
+ struct uni_name_t *p_uniname,
+ struct dos_name_t *p_dosname)
+{
+ int i = 0, j, n = 0;
+ u8 buf[DOS_NAME_LENGTH + 2];
+ u8 *dosname = p_dosname->name;
+ u16 *uniname = p_uniname->name;
+ struct nls_table *nls = EXFAT_SB(sb)->nls_disk;
+
+ if (*dosname == 0x05) {
+ *buf = 0xE5;
+ i++;
+ n++;
+ }
+
+ for (; i < 8; i++, n++) {
+ if (*(dosname + i) == ' ')
+ break;
+
+ if ((*(dosname + i) >= 'A') && (*(dosname + i) <= 'Z') &&
+ (p_dosname->name_case & 0x08))
+ *(buf + n) = *(dosname + i) + ('a' - 'A');
+ else
+ *(buf + n) = *(dosname + i);
+ }
+ if (*(dosname + 8) != ' ') {
+ *(buf + n) = '.';
+ n++;
+ }
+
+ for (i = 8; i < DOS_NAME_LENGTH; i++, n++) {
+ if (*(dosname + i) == ' ')
+ break;
+
+ if ((*(dosname + i) >= 'A') && (*(dosname + i) <= 'Z') &&
+ (p_dosname->name_case & 0x10))
+ *(buf + n) = *(dosname + i) + ('a' - 'A');
+ else
+ *(buf + n) = *(dosname + i);
+ }
+ *(buf + n) = '\0';
+
+ i = 0;
+ j = 0;
+ while (j < (MAX_NAME_LENGTH - 1)) {
+ if (*(buf + i) == '\0')
+ break;
+
+ i += convert_ch_to_uni(nls, uniname, (buf + i), NULL);
+
+ uniname++;
+ j++;
+ }
+
+ *uniname = (u16)'\0';
+}
+
+void nls_uniname_to_cstring(struct super_block *sb, u8 *p_cstring,
+ struct uni_name_t *p_uniname)
+{
+ int i, j, len;
+ u8 buf[MAX_CHARSET_SIZE];
+ u16 *uniname = p_uniname->name;
+ struct nls_table *nls = EXFAT_SB(sb)->nls_io;
+
+ if (!nls) {
+ len = utf16s_to_utf8s(uniname, MAX_NAME_LENGTH,
+ UTF16_HOST_ENDIAN, p_cstring,
+ MAX_NAME_LENGTH);
+ p_cstring[len] = 0;
+ return;
+ }
+
+ i = 0;
+ while (i < (MAX_NAME_LENGTH - 1)) {
+ if (*uniname == (u16)'\0')
+ break;
+
+ len = convert_uni_to_ch(nls, buf, *uniname, NULL);
+
+ if (len > 1) {
+ for (j = 0; j < len; j++)
+ *p_cstring++ = (char)*(buf + j);
+ } else { /* len == 1 */
+ *p_cstring++ = (char)*buf;
+ }
+
+ uniname++;
+ i++;
+ }
+
+ *p_cstring = '\0';
+}
+
+void nls_cstring_to_uniname(struct super_block *sb,
+ struct uni_name_t *p_uniname, u8 *p_cstring,
+ bool *p_lossy)
+{
+ int i, j;
+ bool lossy = false;
+ u8 *end_of_name;
+ u8 upname[MAX_NAME_LENGTH * 2];
+ u16 *uniname = p_uniname->name;
+ struct nls_table *nls = EXFAT_SB(sb)->nls_io;
+
+ /* strip all trailing spaces */
+ end_of_name = p_cstring + strlen(p_cstring);
+
+ while (*(--end_of_name) == ' ') {
+ if (end_of_name < p_cstring)
+ break;
+ }
+ *(++end_of_name) = '\0';
+
+ if (strcmp(p_cstring, ".") && strcmp(p_cstring, "..")) {
+ /* strip all trailing periods */
+ while (*(--end_of_name) == '.') {
+ if (end_of_name < p_cstring)
+ break;
+ }
+ *(++end_of_name) = '\0';
+ }
+
+ if (*p_cstring == '\0')
+ lossy = true;
+
+ if (!nls) {
+ i = utf8s_to_utf16s(p_cstring, MAX_NAME_LENGTH,
+ UTF16_HOST_ENDIAN, uniname,
+ MAX_NAME_LENGTH);
+ for (j = 0; j < i; j++)
+ SET16_A(upname + j * 2, nls_upper(sb, uniname[j]));
+ uniname[i] = '\0';
+ } else {
+ i = 0;
+ j = 0;
+ while (j < (MAX_NAME_LENGTH - 1)) {
+ if (*(p_cstring + i) == '\0')
+ break;
+
+ i += convert_ch_to_uni(nls, uniname,
+ (u8 *)(p_cstring + i), &lossy);
+
+ if ((*uniname < 0x0020) ||
+ nls_wstrchr(bad_uni_chars, *uniname))
+ lossy = true;
+
+ SET16_A(upname + j * 2, nls_upper(sb, *uniname));
+
+ uniname++;
+ j++;
+ }
+
+ if (*(p_cstring + i) != '\0')
+ lossy = true;
+ *uniname = (u16)'\0';
+ }
+
+ p_uniname->name_len = j;
+ p_uniname->name_hash = calc_checksum_2byte(upname, j << 1, 0,
+ CS_DEFAULT);
+
+ if (p_lossy)
+ *p_lossy = lossy;
+}
diff --git a/drivers/staging/exfat/exfat_super.c b/drivers/staging/exfat/exfat_super.c
new file mode 100644
index 0000000000..5b5c2ca8c9
--- /dev/null
+++ b/drivers/staging/exfat/exfat_super.c
@@ -0,0 +1,4137 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
+ */
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/time.h>
+#include <linux/slab.h>
+#include <linux/seq_file.h>
+#include <linux/pagemap.h>
+#include <linux/mpage.h>
+#include <linux/buffer_head.h>
+#include <linux/exportfs.h>
+#include <linux/mount.h>
+#include <linux/vfs.h>
+#include <linux/aio.h>
+#include <linux/iversion.h>
+#include <linux/parser.h>
+#include <linux/uio.h>
+#include <linux/writeback.h>
+#include <linux/log2.h>
+#include <linux/hash.h>
+#include <linux/backing-dev.h>
+#include <linux/sched.h>
+#include <linux/fs_struct.h>
+#include <linux/namei.h>
+#include <linux/time.h>
+
+#include <linux/string.h>
+#include <linux/nls.h>
+#include <linux/mutex.h>
+#include <linux/swap.h>
+
+#define EXFAT_VERSION "1.3.0"
+
+#include "exfat.h"
+
+static struct kmem_cache *exfat_inode_cachep;
+
+// FIXME use commented lines
+// static int exfat_default_codepage = CONFIG_EXFAT_DEFAULT_CODEPAGE;
+// static char exfat_default_iocharset[] = CONFIG_EXFAT_DEFAULT_IOCHARSET;
+static int exfat_default_codepage = CONFIG_FAT_DEFAULT_CODEPAGE;
+static char exfat_default_iocharset[] = CONFIG_FAT_DEFAULT_IOCHARSET;
+
+#define INC_IVERSION(x) (inode_inc_iversion(x))
+#define GET_IVERSION(x) (inode_peek_iversion_raw(x))
+#define SET_IVERSION(x, y) (inode_set_iversion(x, y))
+
+static struct inode *exfat_iget(struct super_block *sb, loff_t i_pos);
+static int exfat_sync_inode(struct inode *inode);
+static struct inode *exfat_build_inode(struct super_block *sb,
+ struct file_id_t *fid, loff_t i_pos);
+static int exfat_write_inode(struct inode *inode,
+ struct writeback_control *wbc);
+static void exfat_write_super(struct super_block *sb);
+
+#define UNIX_SECS_1980 315532800L
+
+#if BITS_PER_LONG == 64
+#define UNIX_SECS_2108 4354819200L
+#endif
+
+/* days between 1.1.70 and 1.1.80 (2 leap days) */
+#define DAYS_DELTA_DECADE (365 * 10 + 2)
+/* 120 (2100 - 1980) isn't leap year */
+#define NO_LEAP_YEAR_2100 (120)
+#define IS_LEAP_YEAR(y) (!((y) & 0x3) && (y) != NO_LEAP_YEAR_2100)
+
+#define SECS_PER_MIN (60)
+#define SECS_PER_HOUR (60 * SECS_PER_MIN)
+#define SECS_PER_DAY (24 * SECS_PER_HOUR)
+
+#define MAKE_LEAP_YEAR(leap_year, year) \
+ do { \
+ if (unlikely(year > NO_LEAP_YEAR_2100)) \
+ leap_year = ((year + 3) / 4) - 1; \
+ else \
+ leap_year = ((year + 3) / 4); \
+ } while (0)
+
+/* Linear day numbers of the respective 1sts in non-leap years. */
+static time_t accum_days_in_year[] = {
+ /* Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec */
+ 0, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0,
+};
+
+/* Convert a FAT time/date pair to a UNIX date (seconds since 1 1 70). */
+static void exfat_time_fat2unix(struct exfat_sb_info *sbi,
+ struct timespec64 *ts, struct date_time_t *tp)
+{
+ time_t year = tp->Year;
+ time_t ld;
+
+ MAKE_LEAP_YEAR(ld, year);
+
+ if (IS_LEAP_YEAR(year) && (tp->Month) > 2)
+ ld++;
+
+ ts->tv_sec = tp->Second +
+ tp->Minute * SECS_PER_MIN +
+ tp->Hour * SECS_PER_HOUR +
+ (ld + accum_days_in_year[(tp->Month)] +
+ (tp->Day - 1)) * SECS_PER_DAY +
+ (year * 365 + DAYS_DELTA_DECADE) * SECS_PER_DAY +
+ sys_tz.tz_minuteswest * SECS_PER_MIN;
+
+ ts->tv_nsec = 0;
+}
+
+/* Convert linear UNIX date to a FAT time/date pair. */
+static void exfat_time_unix2fat(struct exfat_sb_info *sbi,
+ struct timespec64 *ts, struct date_time_t *tp)
+{
+ time_t second = ts->tv_sec;
+ time_t day, month, year;
+ time_t ld;
+
+ second -= sys_tz.tz_minuteswest * SECS_PER_MIN;
+
+ /* Jan 1 GMT 00:00:00 1980. But what about another time zone? */
+ if (second < UNIX_SECS_1980) {
+ tp->Second = 0;
+ tp->Minute = 0;
+ tp->Hour = 0;
+ tp->Day = 1;
+ tp->Month = 1;
+ tp->Year = 0;
+ return;
+ }
+#if (BITS_PER_LONG == 64)
+ if (second >= UNIX_SECS_2108) {
+ tp->Second = 59;
+ tp->Minute = 59;
+ tp->Hour = 23;
+ tp->Day = 31;
+ tp->Month = 12;
+ tp->Year = 127;
+ return;
+ }
+#endif
+ day = second / SECS_PER_DAY - DAYS_DELTA_DECADE;
+ year = day / 365;
+ MAKE_LEAP_YEAR(ld, year);
+ if (year * 365 + ld > day)
+ year--;
+
+ MAKE_LEAP_YEAR(ld, year);
+ day -= year * 365 + ld;
+
+ if (IS_LEAP_YEAR(year) && day == accum_days_in_year[3]) {
+ month = 2;
+ } else {
+ if (IS_LEAP_YEAR(year) && day > accum_days_in_year[3])
+ day--;
+ for (month = 1; month < 12; month++) {
+ if (accum_days_in_year[month + 1] > day)
+ break;
+ }
+ }
+ day -= accum_days_in_year[month];
+
+ tp->Second = second % SECS_PER_MIN;
+ tp->Minute = (second / SECS_PER_MIN) % 60;
+ tp->Hour = (second / SECS_PER_HOUR) % 24;
+ tp->Day = day + 1;
+ tp->Month = month;
+ tp->Year = year;
+}
+
+struct timestamp_t *tm_current(struct timestamp_t *tp)
+{
+ struct timespec64 ts;
+ time_t second, day, leap_day, month, year;
+
+ ktime_get_real_ts64(&ts);
+
+ second = ts.tv_sec;
+ second -= sys_tz.tz_minuteswest * SECS_PER_MIN;
+
+ /* Jan 1 GMT 00:00:00 1980. But what about another time zone? */
+ if (second < UNIX_SECS_1980) {
+ tp->sec = 0;
+ tp->min = 0;
+ tp->hour = 0;
+ tp->day = 1;
+ tp->mon = 1;
+ tp->year = 0;
+ return tp;
+ }
+#if BITS_PER_LONG == 64
+ if (second >= UNIX_SECS_2108) {
+ tp->sec = 59;
+ tp->min = 59;
+ tp->hour = 23;
+ tp->day = 31;
+ tp->mon = 12;
+ tp->year = 127;
+ return tp;
+ }
+#endif
+
+ day = second / SECS_PER_DAY - DAYS_DELTA_DECADE;
+ year = day / 365;
+
+ MAKE_LEAP_YEAR(leap_day, year);
+ if (year * 365 + leap_day > day)
+ year--;
+
+ MAKE_LEAP_YEAR(leap_day, year);
+
+ day -= year * 365 + leap_day;
+
+ if (IS_LEAP_YEAR(year) && day == accum_days_in_year[3]) {
+ month = 2;
+ } else {
+ if (IS_LEAP_YEAR(year) && day > accum_days_in_year[3])
+ day--;
+ for (month = 1; month < 12; month++) {
+ if (accum_days_in_year[month + 1] > day)
+ break;
+ }
+ }
+ day -= accum_days_in_year[month];
+
+ tp->sec = second % SECS_PER_MIN;
+ tp->min = (second / SECS_PER_MIN) % 60;
+ tp->hour = (second / SECS_PER_HOUR) % 24;
+ tp->day = day + 1;
+ tp->mon = month;
+ tp->year = year;
+
+ return tp;
+}
+
+static void __lock_super(struct super_block *sb)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+
+ mutex_lock(&sbi->s_lock);
+}
+
+static void __unlock_super(struct super_block *sb)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+
+ mutex_unlock(&sbi->s_lock);
+}
+
+static int __is_sb_dirty(struct super_block *sb)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+
+ return sbi->s_dirt;
+}
+
+static void __set_sb_clean(struct super_block *sb)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+
+ sbi->s_dirt = 0;
+}
+
+static int __exfat_revalidate(struct dentry *dentry)
+{
+ return 0;
+}
+
+static int exfat_revalidate(struct dentry *dentry, unsigned int flags)
+{
+ if (flags & LOOKUP_RCU)
+ return -ECHILD;
+
+ if (dentry->d_inode)
+ return 1;
+ return __exfat_revalidate(dentry);
+}
+
+static int exfat_revalidate_ci(struct dentry *dentry, unsigned int flags)
+{
+ if (flags & LOOKUP_RCU)
+ return -ECHILD;
+
+ if (dentry->d_inode)
+ return 1;
+
+ if (!flags)
+ return 0;
+
+ if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
+ return 0;
+
+ return __exfat_revalidate(dentry);
+}
+
+static unsigned int __exfat_striptail_len(unsigned int len, const char *name)
+{
+ while (len && name[len - 1] == '.')
+ len--;
+ return len;
+}
+
+static unsigned int exfat_striptail_len(const struct qstr *qstr)
+{
+ return __exfat_striptail_len(qstr->len, qstr->name);
+}
+
+static int exfat_d_hash(const struct dentry *dentry, struct qstr *qstr)
+{
+ qstr->hash = full_name_hash(dentry, qstr->name,
+ exfat_striptail_len(qstr));
+ return 0;
+}
+
+static int exfat_d_hashi(const struct dentry *dentry, struct qstr *qstr)
+{
+ struct super_block *sb = dentry->d_sb;
+ const unsigned char *name;
+ unsigned int len;
+ unsigned long hash;
+
+ name = qstr->name;
+ len = exfat_striptail_len(qstr);
+
+ hash = init_name_hash(dentry);
+ while (len--)
+ hash = partial_name_hash(nls_upper(sb, *name++), hash);
+ qstr->hash = end_name_hash(hash);
+
+ return 0;
+}
+
+static int exfat_cmpi(const struct dentry *dentry, unsigned int len,
+ const char *str, const struct qstr *name)
+{
+ struct nls_table *t = EXFAT_SB(dentry->d_sb)->nls_io;
+ unsigned int alen, blen;
+
+ alen = exfat_striptail_len(name);
+ blen = __exfat_striptail_len(len, str);
+ if (alen == blen) {
+ if (t == NULL) {
+ if (strncasecmp(name->name, str, alen) == 0)
+ return 0;
+ } else if (nls_strnicmp(t, name->name, str, alen) == 0)
+ return 0;
+ }
+ return 1;
+}
+
+static int exfat_cmp(const struct dentry *dentry, unsigned int len,
+ const char *str, const struct qstr *name)
+{
+ unsigned int alen, blen;
+
+ alen = exfat_striptail_len(name);
+ blen = __exfat_striptail_len(len, str);
+ if (alen == blen) {
+ if (strncmp(name->name, str, alen) == 0)
+ return 0;
+ }
+ return 1;
+}
+
+static const struct dentry_operations exfat_ci_dentry_ops = {
+ .d_revalidate = exfat_revalidate_ci,
+ .d_hash = exfat_d_hashi,
+ .d_compare = exfat_cmpi,
+};
+
+static const struct dentry_operations exfat_dentry_ops = {
+ .d_revalidate = exfat_revalidate,
+ .d_hash = exfat_d_hash,
+ .d_compare = exfat_cmp,
+};
+
+static DEFINE_SEMAPHORE(z_sem);
+
+static inline void fs_sync(struct super_block *sb, bool do_sync)
+{
+ if (do_sync)
+ bdev_sync(sb);
+}
+
+/*
+ * If ->i_mode can't hold S_IWUGO (i.e. ATTR_RO), we use ->i_attrs to
+ * save ATTR_RO instead of ->i_mode.
+ *
+ * If it's directory and !sbi->options.rodir, ATTR_RO isn't read-only
+ * bit, it's just used as flag for app.
+ */
+static inline int exfat_mode_can_hold_ro(struct inode *inode)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb);
+
+ if (S_ISDIR(inode->i_mode))
+ return 0;
+
+ if ((~sbi->options.fs_fmask) & 0222)
+ return 1;
+ return 0;
+}
+
+/* Convert attribute bits and a mask to the UNIX mode. */
+static inline mode_t exfat_make_mode(struct exfat_sb_info *sbi, u32 attr,
+ mode_t mode)
+{
+ if ((attr & ATTR_READONLY) && !(attr & ATTR_SUBDIR))
+ mode &= ~0222;
+
+ if (attr & ATTR_SUBDIR)
+ return (mode & ~sbi->options.fs_dmask) | S_IFDIR;
+ else if (attr & ATTR_SYMLINK)
+ return (mode & ~sbi->options.fs_dmask) | S_IFLNK;
+ else
+ return (mode & ~sbi->options.fs_fmask) | S_IFREG;
+}
+
+/* Return the FAT attribute byte for this inode */
+static inline u32 exfat_make_attr(struct inode *inode)
+{
+ if (exfat_mode_can_hold_ro(inode) && !(inode->i_mode & 0222))
+ return (EXFAT_I(inode)->fid.attr) | ATTR_READONLY;
+ else
+ return EXFAT_I(inode)->fid.attr;
+}
+
+static inline void exfat_save_attr(struct inode *inode, u32 attr)
+{
+ if (exfat_mode_can_hold_ro(inode))
+ EXFAT_I(inode)->fid.attr = attr & ATTR_RWMASK;
+ else
+ EXFAT_I(inode)->fid.attr = attr & (ATTR_RWMASK | ATTR_READONLY);
+}
+
+static int ffsMountVol(struct super_block *sb)
+{
+ int i, ret;
+ struct pbr_sector_t *p_pbr;
+ struct buffer_head *tmp_bh = NULL;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ pr_info("[EXFAT] trying to mount...\n");
+
+ down(&z_sem);
+
+ buf_init(sb);
+
+ sema_init(&p_fs->v_sem, 1);
+ p_fs->dev_ejected = FALSE;
+
+ /* open the block device */
+ bdev_open(sb);
+
+ if (p_bd->sector_size < sb->s_blocksize) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ if (p_bd->sector_size > sb->s_blocksize)
+ sb_set_blocksize(sb, p_bd->sector_size);
+
+ /* read Sector 0 */
+ if (sector_read(sb, 0, &tmp_bh, 1) != FFS_SUCCESS) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+
+ p_fs->PBR_sector = 0;
+
+ p_pbr = (struct pbr_sector_t *) tmp_bh->b_data;
+
+ /* check the validity of PBR */
+ if (GET16_A(p_pbr->signature) != PBR_SIGNATURE) {
+ brelse(tmp_bh);
+ bdev_close(sb);
+ ret = FFS_FORMATERR;
+ goto out;
+ }
+
+ /* fill fs_stuct */
+ for (i = 0; i < 53; i++)
+ if (p_pbr->bpb[i])
+ break;
+
+ if (i < 53) {
+ if (GET16(p_pbr->bpb + 11)) /* num_fat_sectors */
+ ret = fat16_mount(sb, p_pbr);
+ else
+ ret = fat32_mount(sb, p_pbr);
+ } else {
+ ret = exfat_mount(sb, p_pbr);
+ }
+
+ brelse(tmp_bh);
+
+ if (ret) {
+ bdev_close(sb);
+ goto out;
+ }
+
+ if (p_fs->vol_type == EXFAT) {
+ ret = load_alloc_bitmap(sb);
+ if (ret) {
+ bdev_close(sb);
+ goto out;
+ }
+ ret = load_upcase_table(sb);
+ if (ret) {
+ free_alloc_bitmap(sb);
+ bdev_close(sb);
+ goto out;
+ }
+ }
+
+ if (p_fs->dev_ejected) {
+ if (p_fs->vol_type == EXFAT) {
+ free_upcase_table(sb);
+ free_alloc_bitmap(sb);
+ }
+ bdev_close(sb);
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+
+ pr_info("[EXFAT] mounted successfully\n");
+
+out:
+ up(&z_sem);
+
+ return ret;
+}
+
+static int ffsUmountVol(struct super_block *sb)
+{
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ int err = FFS_SUCCESS;
+
+ pr_info("[EXFAT] trying to unmount...\n");
+
+ down(&z_sem);
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ fs_sync(sb, false);
+ fs_set_vol_flags(sb, VOL_CLEAN);
+
+ if (p_fs->vol_type == EXFAT) {
+ free_upcase_table(sb);
+ free_alloc_bitmap(sb);
+ }
+
+ FAT_release_all(sb);
+ buf_release_all(sb);
+
+ /* close the block device */
+ bdev_close(sb);
+
+ if (p_fs->dev_ejected) {
+ pr_info("[EXFAT] unmounted with media errors. Device is already ejected.\n");
+ err = FFS_MEDIAERR;
+ }
+
+ buf_shutdown(sb);
+
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+ up(&z_sem);
+
+ pr_info("[EXFAT] unmounted successfully\n");
+
+ return err;
+}
+
+static int ffsGetVolInfo(struct super_block *sb, struct vol_info_t *info)
+{
+ int err = FFS_SUCCESS;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ /* check the validity of pointer parameters */
+ if (info == NULL)
+ return FFS_ERROR;
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ if (p_fs->used_clusters == (u32) ~0)
+ p_fs->used_clusters = p_fs->fs_func->count_used_clusters(sb);
+
+ info->FatType = p_fs->vol_type;
+ info->ClusterSize = p_fs->cluster_size;
+ info->NumClusters = p_fs->num_clusters - 2; /* clu 0 & 1 */
+ info->UsedClusters = p_fs->used_clusters;
+ info->FreeClusters = info->NumClusters - info->UsedClusters;
+
+ if (p_fs->dev_ejected)
+ err = FFS_MEDIAERR;
+
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ return err;
+}
+
+static int ffsSyncVol(struct super_block *sb, bool do_sync)
+{
+ int err = FFS_SUCCESS;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ /* synchronize the file system */
+ fs_sync(sb, do_sync);
+ fs_set_vol_flags(sb, VOL_CLEAN);
+
+ if (p_fs->dev_ejected)
+ err = FFS_MEDIAERR;
+
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ return err;
+}
+
+/*----------------------------------------------------------------------*/
+/* File Operation Functions */
+/*----------------------------------------------------------------------*/
+
+static int ffsLookupFile(struct inode *inode, char *path, struct file_id_t *fid)
+{
+ int ret, dentry, num_entries;
+ struct chain_t dir;
+ struct uni_name_t uni_name;
+ struct dos_name_t dos_name;
+ struct dentry_t *ep, *ep2;
+ struct entry_set_cache_t *es = NULL;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ pr_debug("%s entered\n", __func__);
+
+ /* check the validity of pointer parameters */
+ if ((fid == NULL) || (path == NULL) || (*path == '\0'))
+ return FFS_ERROR;
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ /* check the validity of directory name in the given pathname */
+ ret = resolve_path(inode, path, &dir, &uni_name);
+ if (ret)
+ goto out;
+
+ ret = get_num_entries_and_dos_name(sb, &dir, &uni_name, &num_entries,
+ &dos_name);
+ if (ret)
+ goto out;
+
+ /* search the file name for directories */
+ dentry = p_fs->fs_func->find_dir_entry(sb, &dir, &uni_name, num_entries,
+ &dos_name, TYPE_ALL);
+ if (dentry < -1) {
+ return FFS_NOTFOUND;
+ goto out;
+ }
+
+ fid->dir.dir = dir.dir;
+ fid->dir.size = dir.size;
+ fid->dir.flags = dir.flags;
+ fid->entry = dentry;
+
+ if (dentry == -1) {
+ fid->type = TYPE_DIR;
+ fid->rwoffset = 0;
+ fid->hint_last_off = -1;
+
+ fid->attr = ATTR_SUBDIR;
+ fid->flags = 0x01;
+ fid->size = 0;
+ fid->start_clu = p_fs->root_dir;
+ } else {
+ if (p_fs->vol_type == EXFAT) {
+ es = get_entry_set_in_dir(sb, &dir, dentry,
+ ES_2_ENTRIES, &ep);
+ if (!es) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ ep2 = ep+1;
+ } else {
+ ep = get_entry_in_dir(sb, &dir, dentry, NULL);
+ if (!ep) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ ep2 = ep;
+ }
+
+ fid->type = p_fs->fs_func->get_entry_type(ep);
+ fid->rwoffset = 0;
+ fid->hint_last_off = -1;
+ fid->attr = p_fs->fs_func->get_entry_attr(ep);
+
+ fid->size = p_fs->fs_func->get_entry_size(ep2);
+ if ((fid->type == TYPE_FILE) && (fid->size == 0)) {
+ fid->flags = (p_fs->vol_type == EXFAT) ? 0x03 : 0x01;
+ fid->start_clu = CLUSTER_32(~0);
+ } else {
+ fid->flags = p_fs->fs_func->get_entry_flag(ep2);
+ fid->start_clu = p_fs->fs_func->get_entry_clu0(ep2);
+ }
+
+ if (p_fs->vol_type == EXFAT)
+ release_entry_set(es);
+ }
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+out:
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ return ret;
+}
+
+static int ffsCreateFile(struct inode *inode, char *path, u8 mode,
+ struct file_id_t *fid)
+{
+ struct chain_t dir;
+ struct uni_name_t uni_name;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ int ret;
+
+ /* check the validity of pointer parameters */
+ if ((fid == NULL) || (path == NULL) || (*path == '\0'))
+ return FFS_ERROR;
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ /* check the validity of directory name in the given pathname */
+ ret = resolve_path(inode, path, &dir, &uni_name);
+ if (ret)
+ goto out;
+
+ fs_set_vol_flags(sb, VOL_DIRTY);
+
+ /* create a new file */
+ ret = create_file(inode, &dir, &uni_name, mode, fid);
+
+#ifdef CONFIG_EXFAT_DELAYED_SYNC
+ fs_sync(sb, false);
+ fs_set_vol_flags(sb, VOL_CLEAN);
+#endif
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+
+out:
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ return ret;
+}
+
+static int ffsReadFile(struct inode *inode, struct file_id_t *fid, void *buffer,
+ u64 count, u64 *rcount)
+{
+ s32 offset, sec_offset, clu_offset;
+ u32 clu;
+ int ret;
+ sector_t LogSector;
+ u64 oneblkread, read_bytes;
+ struct buffer_head *tmp_bh = NULL;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ /* check the validity of the given file id */
+ if (fid == NULL)
+ return FFS_INVALIDFID;
+
+ /* check the validity of pointer parameters */
+ if (buffer == NULL)
+ return FFS_ERROR;
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ /* check if the given file ID is opened */
+ if (fid->type != TYPE_FILE) {
+ ret = FFS_PERMISSIONERR;
+ goto out;
+ }
+
+ if (fid->rwoffset > fid->size)
+ fid->rwoffset = fid->size;
+
+ if (count > (fid->size - fid->rwoffset))
+ count = fid->size - fid->rwoffset;
+
+ if (count == 0) {
+ if (rcount != NULL)
+ *rcount = 0;
+ ret = FFS_EOF;
+ goto out;
+ }
+
+ read_bytes = 0;
+
+ while (count > 0) {
+ clu_offset = (s32)(fid->rwoffset >> p_fs->cluster_size_bits);
+ clu = fid->start_clu;
+
+ if (fid->flags == 0x03) {
+ clu += clu_offset;
+ } else {
+ /* hint information */
+ if ((clu_offset > 0) && (fid->hint_last_off > 0) &&
+ (clu_offset >= fid->hint_last_off)) {
+ clu_offset -= fid->hint_last_off;
+ clu = fid->hint_last_clu;
+ }
+
+ while (clu_offset > 0) {
+ /* clu = FAT_read(sb, clu); */
+ if (FAT_read(sb, clu, &clu) == -1)
+ return FFS_MEDIAERR;
+
+ clu_offset--;
+ }
+ }
+
+ /* hint information */
+ fid->hint_last_off = (s32)(fid->rwoffset >>
+ p_fs->cluster_size_bits);
+ fid->hint_last_clu = clu;
+
+ /* byte offset in cluster */
+ offset = (s32)(fid->rwoffset & (p_fs->cluster_size-1));
+
+ /* sector offset in cluster */
+ sec_offset = offset >> p_bd->sector_size_bits;
+
+ /* byte offset in sector */
+ offset &= p_bd->sector_size_mask;
+
+ LogSector = START_SECTOR(clu) + sec_offset;
+
+ oneblkread = (u64)(p_bd->sector_size - offset);
+ if (oneblkread > count)
+ oneblkread = count;
+
+ if ((offset == 0) && (oneblkread == p_bd->sector_size)) {
+ if (sector_read(sb, LogSector, &tmp_bh, 1) !=
+ FFS_SUCCESS)
+ goto err_out;
+ memcpy((char *)buffer + read_bytes,
+ (char *)tmp_bh->b_data, (s32)oneblkread);
+ } else {
+ if (sector_read(sb, LogSector, &tmp_bh, 1) !=
+ FFS_SUCCESS)
+ goto err_out;
+ memcpy((char *)buffer + read_bytes,
+ (char *)tmp_bh->b_data + offset,
+ (s32)oneblkread);
+ }
+ count -= oneblkread;
+ read_bytes += oneblkread;
+ fid->rwoffset += oneblkread;
+ }
+ brelse(tmp_bh);
+
+/* How did this ever work and not leak a brlse()?? */
+err_out:
+ /* set the size of read bytes */
+ if (rcount != NULL)
+ *rcount = read_bytes;
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+
+out:
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ return ret;
+}
+
+static int ffsWriteFile(struct inode *inode, struct file_id_t *fid,
+ void *buffer, u64 count, u64 *wcount)
+{
+ s32 modified = FALSE, offset, sec_offset, clu_offset;
+ s32 num_clusters, num_alloc, num_alloced = (s32) ~0;
+ int ret = 0;
+ u32 clu, last_clu;
+ sector_t LogSector, sector = 0;
+ u64 oneblkwrite, write_bytes;
+ struct chain_t new_clu;
+ struct timestamp_t tm;
+ struct dentry_t *ep, *ep2;
+ struct entry_set_cache_t *es = NULL;
+ struct buffer_head *tmp_bh = NULL;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+
+ /* check the validity of the given file id */
+ if (fid == NULL)
+ return FFS_INVALIDFID;
+
+ /* check the validity of pointer parameters */
+ if (buffer == NULL)
+ return FFS_ERROR;
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ /* check if the given file ID is opened */
+ if (fid->type != TYPE_FILE) {
+ ret = FFS_PERMISSIONERR;
+ goto out;
+ }
+
+ if (fid->rwoffset > fid->size)
+ fid->rwoffset = fid->size;
+
+ if (count == 0) {
+ if (wcount != NULL)
+ *wcount = 0;
+ ret = FFS_SUCCESS;
+ goto out;
+ }
+
+ fs_set_vol_flags(sb, VOL_DIRTY);
+
+ if (fid->size == 0)
+ num_clusters = 0;
+ else
+ num_clusters = (s32)((fid->size-1) >>
+ p_fs->cluster_size_bits) + 1;
+
+ write_bytes = 0;
+
+ while (count > 0) {
+ clu_offset = (s32)(fid->rwoffset >> p_fs->cluster_size_bits);
+ clu = last_clu = fid->start_clu;
+
+ if (fid->flags == 0x03) {
+ if ((clu_offset > 0) && (clu != CLUSTER_32(~0))) {
+ last_clu += clu_offset - 1;
+
+ if (clu_offset == num_clusters)
+ clu = CLUSTER_32(~0);
+ else
+ clu += clu_offset;
+ }
+ } else {
+ /* hint information */
+ if ((clu_offset > 0) && (fid->hint_last_off > 0) &&
+ (clu_offset >= fid->hint_last_off)) {
+ clu_offset -= fid->hint_last_off;
+ clu = fid->hint_last_clu;
+ }
+
+ while ((clu_offset > 0) && (clu != CLUSTER_32(~0))) {
+ last_clu = clu;
+ /* clu = FAT_read(sb, clu); */
+ if (FAT_read(sb, clu, &clu) == -1) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ clu_offset--;
+ }
+ }
+
+ if (clu == CLUSTER_32(~0)) {
+ num_alloc = (s32)((count - 1) >>
+ p_fs->cluster_size_bits) + 1;
+ new_clu.dir = (last_clu == CLUSTER_32(~0)) ?
+ CLUSTER_32(~0) : last_clu+1;
+ new_clu.size = 0;
+ new_clu.flags = fid->flags;
+
+ /* (1) allocate a chain of clusters */
+ num_alloced = p_fs->fs_func->alloc_cluster(sb,
+ num_alloc,
+ &new_clu);
+ if (num_alloced == 0)
+ break;
+ else if (num_alloced < 0) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+
+ /* (2) append to the FAT chain */
+ if (last_clu == CLUSTER_32(~0)) {
+ if (new_clu.flags == 0x01)
+ fid->flags = 0x01;
+ fid->start_clu = new_clu.dir;
+ modified = TRUE;
+ } else {
+ if (new_clu.flags != fid->flags) {
+ exfat_chain_cont_cluster(sb,
+ fid->start_clu,
+ num_clusters);
+ fid->flags = 0x01;
+ modified = TRUE;
+ }
+ if (new_clu.flags == 0x01)
+ FAT_write(sb, last_clu, new_clu.dir);
+ }
+
+ num_clusters += num_alloced;
+ clu = new_clu.dir;
+ }
+
+ /* hint information */
+ fid->hint_last_off = (s32)(fid->rwoffset >>
+ p_fs->cluster_size_bits);
+ fid->hint_last_clu = clu;
+
+ /* byte offset in cluster */
+ offset = (s32)(fid->rwoffset & (p_fs->cluster_size - 1));
+
+ /* sector offset in cluster */
+ sec_offset = offset >> p_bd->sector_size_bits;
+
+ /* byte offset in sector */
+ offset &= p_bd->sector_size_mask;
+
+ LogSector = START_SECTOR(clu) + sec_offset;
+
+ oneblkwrite = (u64)(p_bd->sector_size - offset);
+ if (oneblkwrite > count)
+ oneblkwrite = count;
+
+ if ((offset == 0) && (oneblkwrite == p_bd->sector_size)) {
+ if (sector_read(sb, LogSector, &tmp_bh, 0) !=
+ FFS_SUCCESS)
+ goto err_out;
+ memcpy((char *)tmp_bh->b_data,
+ (char *)buffer + write_bytes, (s32)oneblkwrite);
+ if (sector_write(sb, LogSector, tmp_bh, 0) !=
+ FFS_SUCCESS) {
+ brelse(tmp_bh);
+ goto err_out;
+ }
+ } else {
+ if ((offset > 0) ||
+ ((fid->rwoffset+oneblkwrite) < fid->size)) {
+ if (sector_read(sb, LogSector, &tmp_bh, 1) !=
+ FFS_SUCCESS)
+ goto err_out;
+ } else {
+ if (sector_read(sb, LogSector, &tmp_bh, 0) !=
+ FFS_SUCCESS)
+ goto err_out;
+ }
+
+ memcpy((char *)tmp_bh->b_data + offset,
+ (char *)buffer + write_bytes, (s32)oneblkwrite);
+ if (sector_write(sb, LogSector, tmp_bh, 0) !=
+ FFS_SUCCESS) {
+ brelse(tmp_bh);
+ goto err_out;
+ }
+ }
+
+ count -= oneblkwrite;
+ write_bytes += oneblkwrite;
+ fid->rwoffset += oneblkwrite;
+
+ fid->attr |= ATTR_ARCHIVE;
+
+ if (fid->size < fid->rwoffset) {
+ fid->size = fid->rwoffset;
+ modified = TRUE;
+ }
+ }
+
+ brelse(tmp_bh);
+
+ /* (3) update the direcoty entry */
+ if (p_fs->vol_type == EXFAT) {
+ es = get_entry_set_in_dir(sb, &(fid->dir), fid->entry,
+ ES_ALL_ENTRIES, &ep);
+ if (es == NULL)
+ goto err_out;
+ ep2 = ep+1;
+ } else {
+ ep = get_entry_in_dir(sb, &(fid->dir), fid->entry, §or);
+ if (!ep)
+ goto err_out;
+ ep2 = ep;
+ }
+
+ p_fs->fs_func->set_entry_time(ep, tm_current(&tm), TM_MODIFY);
+ p_fs->fs_func->set_entry_attr(ep, fid->attr);
+
+ if (p_fs->vol_type != EXFAT)
+ buf_modify(sb, sector);
+
+ if (modified) {
+ if (p_fs->fs_func->get_entry_flag(ep2) != fid->flags)
+ p_fs->fs_func->set_entry_flag(ep2, fid->flags);
+
+ if (p_fs->fs_func->get_entry_size(ep2) != fid->size)
+ p_fs->fs_func->set_entry_size(ep2, fid->size);
+
+ if (p_fs->fs_func->get_entry_clu0(ep2) != fid->start_clu)
+ p_fs->fs_func->set_entry_clu0(ep2, fid->start_clu);
+
+ if (p_fs->vol_type != EXFAT)
+ buf_modify(sb, sector);
+ }
+
+ if (p_fs->vol_type == EXFAT) {
+ update_dir_checksum_with_entry_set(sb, es);
+ release_entry_set(es);
+ }
+
+#ifdef CONFIG_EXFAT_DELAYED_SYNC
+ fs_sync(sb, false);
+ fs_set_vol_flags(sb, VOL_CLEAN);
+#endif
+
+err_out:
+ /* set the size of written bytes */
+ if (wcount != NULL)
+ *wcount = write_bytes;
+
+ if (num_alloced == 0)
+ ret = FFS_FULL;
+
+ else if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+
+out:
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ return ret;
+}
+
+static int ffsTruncateFile(struct inode *inode, u64 old_size, u64 new_size)
+{
+ s32 num_clusters;
+ u32 last_clu = CLUSTER_32(0);
+ int ret = 0;
+ sector_t sector = 0;
+ struct chain_t clu;
+ struct timestamp_t tm;
+ struct dentry_t *ep, *ep2;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct file_id_t *fid = &(EXFAT_I(inode)->fid);
+ struct entry_set_cache_t *es = NULL;
+
+ pr_debug("%s entered (inode %p size %llu)\n", __func__, inode,
+ new_size);
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ /* check if the given file ID is opened */
+ if (fid->type != TYPE_FILE) {
+ ret = FFS_PERMISSIONERR;
+ goto out;
+ }
+
+ if (fid->size != old_size) {
+ pr_err("[EXFAT] truncate : can't skip it because of size-mismatch(old:%lld->fid:%lld).\n",
+ old_size, fid->size);
+ }
+
+ if (old_size <= new_size) {
+ ret = FFS_SUCCESS;
+ goto out;
+ }
+
+ fs_set_vol_flags(sb, VOL_DIRTY);
+
+ clu.dir = fid->start_clu;
+ clu.size = (s32)((old_size-1) >> p_fs->cluster_size_bits) + 1;
+ clu.flags = fid->flags;
+
+ if (new_size > 0) {
+ num_clusters = (s32)((new_size-1) >>
+ p_fs->cluster_size_bits) + 1;
+
+ if (clu.flags == 0x03) {
+ clu.dir += num_clusters;
+ } else {
+ while (num_clusters > 0) {
+ last_clu = clu.dir;
+ if (FAT_read(sb, clu.dir, &clu.dir) == -1)
+ return FFS_MEDIAERR;
+ num_clusters--;
+ }
+ }
+
+ clu.size -= num_clusters;
+ }
+
+ fid->size = new_size;
+ fid->attr |= ATTR_ARCHIVE;
+ if (new_size == 0) {
+ fid->flags = (p_fs->vol_type == EXFAT) ? 0x03 : 0x01;
+ fid->start_clu = CLUSTER_32(~0);
+ }
+
+ /* (1) update the directory entry */
+ if (p_fs->vol_type == EXFAT) {
+ es = get_entry_set_in_dir(sb, &fid->dir, fid->entry,
+ ES_ALL_ENTRIES, &ep);
+ if (es == NULL) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ ep2 = ep+1;
+ } else {
+ ep = get_entry_in_dir(sb, &(fid->dir), fid->entry, §or);
+ if (!ep) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ ep2 = ep;
+ }
+
+ p_fs->fs_func->set_entry_time(ep, tm_current(&tm), TM_MODIFY);
+ p_fs->fs_func->set_entry_attr(ep, fid->attr);
+
+ p_fs->fs_func->set_entry_size(ep2, new_size);
+ if (new_size == 0) {
+ p_fs->fs_func->set_entry_flag(ep2, 0x01);
+ p_fs->fs_func->set_entry_clu0(ep2, CLUSTER_32(0));
+ }
+
+ if (p_fs->vol_type != EXFAT)
+ buf_modify(sb, sector);
+ else {
+ update_dir_checksum_with_entry_set(sb, es);
+ release_entry_set(es);
+ }
+
+ /* (2) cut off from the FAT chain */
+ if (last_clu != CLUSTER_32(0)) {
+ if (fid->flags == 0x01)
+ FAT_write(sb, last_clu, CLUSTER_32(~0));
+ }
+
+ /* (3) free the clusters */
+ p_fs->fs_func->free_cluster(sb, &clu, 0);
+
+ /* hint information */
+ fid->hint_last_off = -1;
+ if (fid->rwoffset > fid->size)
+ fid->rwoffset = fid->size;
+
+#ifdef CONFIG_EXFAT_DELAYED_SYNC
+ fs_sync(sb, false);
+ fs_set_vol_flags(sb, VOL_CLEAN);
+#endif
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+
+out:
+ pr_debug("%s exited (%d)\n", __func__, ret);
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ return ret;
+}
+
+static void update_parent_info(struct file_id_t *fid,
+ struct inode *parent_inode)
+{
+ struct fs_info_t *p_fs = &(EXFAT_SB(parent_inode->i_sb)->fs_info);
+ struct file_id_t *parent_fid = &(EXFAT_I(parent_inode)->fid);
+
+ if (unlikely((parent_fid->flags != fid->dir.flags) ||
+ (parent_fid->size !=
+ (fid->dir.size << p_fs->cluster_size_bits)) ||
+ (parent_fid->start_clu != fid->dir.dir))) {
+ fid->dir.dir = parent_fid->start_clu;
+ fid->dir.flags = parent_fid->flags;
+ fid->dir.size = ((parent_fid->size + (p_fs->cluster_size-1))
+ >> p_fs->cluster_size_bits);
+ }
+}
+
+static int ffsMoveFile(struct inode *old_parent_inode, struct file_id_t *fid,
+ struct inode *new_parent_inode, struct dentry *new_dentry)
+{
+ s32 ret;
+ s32 dentry;
+ struct chain_t olddir, newdir;
+ struct chain_t *p_dir = NULL;
+ struct uni_name_t uni_name;
+ struct dentry_t *ep;
+ struct super_block *sb = old_parent_inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ u8 *new_path = (u8 *) new_dentry->d_name.name;
+ struct inode *new_inode = new_dentry->d_inode;
+ int num_entries;
+ struct file_id_t *new_fid = NULL;
+ s32 new_entry = 0;
+
+ /* check the validity of the given file id */
+ if (fid == NULL)
+ return FFS_INVALIDFID;
+
+ /* check the validity of pointer parameters */
+ if ((new_path == NULL) || (*new_path == '\0'))
+ return FFS_ERROR;
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ update_parent_info(fid, old_parent_inode);
+
+ olddir.dir = fid->dir.dir;
+ olddir.size = fid->dir.size;
+ olddir.flags = fid->dir.flags;
+
+ dentry = fid->entry;
+
+ /* check if the old file is "." or ".." */
+ if (p_fs->vol_type != EXFAT) {
+ if ((olddir.dir != p_fs->root_dir) && (dentry < 2)) {
+ ret = FFS_PERMISSIONERR;
+ goto out2;
+ }
+ }
+
+ ep = get_entry_in_dir(sb, &olddir, dentry, NULL);
+ if (!ep) {
+ ret = FFS_MEDIAERR;
+ goto out2;
+ }
+
+ if (p_fs->fs_func->get_entry_attr(ep) & ATTR_READONLY) {
+ ret = FFS_PERMISSIONERR;
+ goto out2;
+ }
+
+ /* check whether new dir is existing directory and empty */
+ if (new_inode) {
+ u32 entry_type;
+
+ ret = FFS_MEDIAERR;
+ new_fid = &EXFAT_I(new_inode)->fid;
+
+ update_parent_info(new_fid, new_parent_inode);
+
+ p_dir = &(new_fid->dir);
+ new_entry = new_fid->entry;
+ ep = get_entry_in_dir(sb, p_dir, new_entry, NULL);
+ if (!ep)
+ goto out;
+
+ entry_type = p_fs->fs_func->get_entry_type(ep);
+
+ if (entry_type == TYPE_DIR) {
+ struct chain_t new_clu;
+
+ new_clu.dir = new_fid->start_clu;
+ new_clu.size = (s32)((new_fid->size - 1) >>
+ p_fs->cluster_size_bits) + 1;
+ new_clu.flags = new_fid->flags;
+
+ if (!is_dir_empty(sb, &new_clu)) {
+ ret = FFS_FILEEXIST;
+ goto out;
+ }
+ }
+ }
+
+ /* check the validity of directory name in the given new pathname */
+ ret = resolve_path(new_parent_inode, new_path, &newdir, &uni_name);
+ if (ret)
+ goto out2;
+
+ fs_set_vol_flags(sb, VOL_DIRTY);
+
+ if (olddir.dir == newdir.dir)
+ ret = rename_file(new_parent_inode, &olddir, dentry, &uni_name,
+ fid);
+ else
+ ret = move_file(new_parent_inode, &olddir, dentry, &newdir,
+ &uni_name, fid);
+
+ if ((ret == FFS_SUCCESS) && new_inode) {
+ /* delete entries of new_dir */
+ ep = get_entry_in_dir(sb, p_dir, new_entry, NULL);
+ if (!ep)
+ goto out;
+
+ num_entries = p_fs->fs_func->count_ext_entries(sb, p_dir,
+ new_entry, ep);
+ if (num_entries < 0)
+ goto out;
+ p_fs->fs_func->delete_dir_entry(sb, p_dir, new_entry, 0,
+ num_entries+1);
+ }
+out:
+#ifdef CONFIG_EXFAT_DELAYED_SYNC
+ fs_sync(sb, false);
+ fs_set_vol_flags(sb, VOL_CLEAN);
+#endif
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+out2:
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ return ret;
+}
+
+static int ffsRemoveFile(struct inode *inode, struct file_id_t *fid)
+{
+ s32 dentry;
+ int ret = FFS_SUCCESS;
+ struct chain_t dir, clu_to_free;
+ struct dentry_t *ep;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ /* check the validity of the given file id */
+ if (fid == NULL)
+ return FFS_INVALIDFID;
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ dir.dir = fid->dir.dir;
+ dir.size = fid->dir.size;
+ dir.flags = fid->dir.flags;
+
+ dentry = fid->entry;
+
+ ep = get_entry_in_dir(sb, &dir, dentry, NULL);
+ if (!ep) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+
+ if (p_fs->fs_func->get_entry_attr(ep) & ATTR_READONLY) {
+ ret = FFS_PERMISSIONERR;
+ goto out;
+ }
+ fs_set_vol_flags(sb, VOL_DIRTY);
+
+ /* (1) update the directory entry */
+ remove_file(inode, &dir, dentry);
+
+ clu_to_free.dir = fid->start_clu;
+ clu_to_free.size = (s32)((fid->size-1) >> p_fs->cluster_size_bits) + 1;
+ clu_to_free.flags = fid->flags;
+
+ /* (2) free the clusters */
+ p_fs->fs_func->free_cluster(sb, &clu_to_free, 0);
+
+ fid->size = 0;
+ fid->start_clu = CLUSTER_32(~0);
+ fid->flags = (p_fs->vol_type == EXFAT) ? 0x03 : 0x01;
+
+#ifdef CONFIG_EXFAT_DELAYED_SYNC
+ fs_sync(sb, false);
+ fs_set_vol_flags(sb, VOL_CLEAN);
+#endif
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+out:
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ return ret;
+}
+
+#if 0
+/* Not currently wired up */
+static int ffsSetAttr(struct inode *inode, u32 attr)
+{
+ u32 type;
+ int ret = FFS_SUCCESS;
+ sector_t sector = 0;
+ struct dentry_t *ep;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct file_id_t *fid = &(EXFAT_I(inode)->fid);
+ u8 is_dir = (fid->type == TYPE_DIR) ? 1 : 0;
+ struct entry_set_cache_t *es = NULL;
+
+ if (fid->attr == attr) {
+ if (p_fs->dev_ejected)
+ return FFS_MEDIAERR;
+ return FFS_SUCCESS;
+ }
+
+ if (is_dir) {
+ if ((fid->dir.dir == p_fs->root_dir) &&
+ (fid->entry == -1)) {
+ if (p_fs->dev_ejected)
+ return FFS_MEDIAERR;
+ return FFS_SUCCESS;
+ }
+ }
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ /* get the directory entry of given file */
+ if (p_fs->vol_type == EXFAT) {
+ es = get_entry_set_in_dir(sb, &(fid->dir), fid->entry,
+ ES_ALL_ENTRIES, &ep);
+ if (es == NULL) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ } else {
+ ep = get_entry_in_dir(sb, &(fid->dir), fid->entry, §or);
+ if (!ep) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ }
+
+ type = p_fs->fs_func->get_entry_type(ep);
+
+ if (((type == TYPE_FILE) && (attr & ATTR_SUBDIR)) ||
+ ((type == TYPE_DIR) && (!(attr & ATTR_SUBDIR)))) {
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+ else
+ ret = FFS_ERROR;
+
+ if (p_fs->vol_type == EXFAT)
+ release_entry_set(es);
+ goto out;
+ }
+
+ fs_set_vol_flags(sb, VOL_DIRTY);
+
+ /* set the file attribute */
+ fid->attr = attr;
+ p_fs->fs_func->set_entry_attr(ep, attr);
+
+ if (p_fs->vol_type != EXFAT)
+ buf_modify(sb, sector);
+ else {
+ update_dir_checksum_with_entry_set(sb, es);
+ release_entry_set(es);
+ }
+
+#ifdef CONFIG_EXFAT_DELAYED_SYNC
+ fs_sync(sb, false);
+ fs_set_vol_flags(sb, VOL_CLEAN);
+#endif
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+out:
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ return ret;
+}
+#endif
+
+static int ffsReadStat(struct inode *inode, struct dir_entry_t *info)
+{
+ sector_t sector = 0;
+ s32 count;
+ int ret = FFS_SUCCESS;
+ struct chain_t dir;
+ struct uni_name_t uni_name;
+ struct timestamp_t tm;
+ struct dentry_t *ep, *ep2;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct file_id_t *fid = &(EXFAT_I(inode)->fid);
+ struct entry_set_cache_t *es = NULL;
+ u8 is_dir = (fid->type == TYPE_DIR) ? 1 : 0;
+
+ pr_debug("%s entered\n", __func__);
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ if (is_dir) {
+ if ((fid->dir.dir == p_fs->root_dir) &&
+ (fid->entry == -1)) {
+ info->Attr = ATTR_SUBDIR;
+ memset((char *)&info->CreateTimestamp, 0,
+ sizeof(struct date_time_t));
+ memset((char *)&info->ModifyTimestamp, 0,
+ sizeof(struct date_time_t));
+ memset((char *)&info->AccessTimestamp, 0,
+ sizeof(struct date_time_t));
+ strcpy(info->ShortName, ".");
+ strcpy(info->Name, ".");
+
+ dir.dir = p_fs->root_dir;
+ dir.flags = 0x01;
+
+ if (p_fs->root_dir == CLUSTER_32(0)) {
+ /* FAT16 root_dir */
+ info->Size = p_fs->dentries_in_root <<
+ DENTRY_SIZE_BITS;
+ } else {
+ info->Size = count_num_clusters(sb, &dir) <<
+ p_fs->cluster_size_bits;
+ }
+
+ count = count_dos_name_entries(sb, &dir, TYPE_DIR);
+ if (count < 0) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ info->NumSubdirs = count;
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ }
+
+ /* get the directory entry of given file or directory */
+ if (p_fs->vol_type == EXFAT) {
+ es = get_entry_set_in_dir(sb, &(fid->dir), fid->entry,
+ ES_2_ENTRIES, &ep);
+ if (es == NULL) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ ep2 = ep+1;
+ } else {
+ ep = get_entry_in_dir(sb, &(fid->dir), fid->entry, §or);
+ if (!ep) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ ep2 = ep;
+ buf_lock(sb, sector);
+ }
+
+ /* set FILE_INFO structure using the acquired struct dentry_t */
+ info->Attr = p_fs->fs_func->get_entry_attr(ep);
+
+ p_fs->fs_func->get_entry_time(ep, &tm, TM_CREATE);
+ info->CreateTimestamp.Year = tm.year;
+ info->CreateTimestamp.Month = tm.mon;
+ info->CreateTimestamp.Day = tm.day;
+ info->CreateTimestamp.Hour = tm.hour;
+ info->CreateTimestamp.Minute = tm.min;
+ info->CreateTimestamp.Second = tm.sec;
+ info->CreateTimestamp.MilliSecond = 0;
+
+ p_fs->fs_func->get_entry_time(ep, &tm, TM_MODIFY);
+ info->ModifyTimestamp.Year = tm.year;
+ info->ModifyTimestamp.Month = tm.mon;
+ info->ModifyTimestamp.Day = tm.day;
+ info->ModifyTimestamp.Hour = tm.hour;
+ info->ModifyTimestamp.Minute = tm.min;
+ info->ModifyTimestamp.Second = tm.sec;
+ info->ModifyTimestamp.MilliSecond = 0;
+
+ memset((char *) &info->AccessTimestamp, 0, sizeof(struct date_time_t));
+
+ *(uni_name.name) = 0x0;
+ /* XXX this is very bad for exfat cuz name is already included in es.
+ * API should be revised
+ */
+ p_fs->fs_func->get_uni_name_from_ext_entry(sb, &(fid->dir), fid->entry,
+ uni_name.name);
+ if (*uni_name.name == 0x0 && p_fs->vol_type != EXFAT)
+ get_uni_name_from_dos_entry(sb, (struct dos_dentry_t *)ep,
+ &uni_name, 0x1);
+ nls_uniname_to_cstring(sb, info->Name, &uni_name);
+
+ if (p_fs->vol_type == EXFAT) {
+ info->NumSubdirs = 2;
+ } else {
+ buf_unlock(sb, sector);
+ get_uni_name_from_dos_entry(sb, (struct dos_dentry_t *)ep,
+ &uni_name, 0x0);
+ nls_uniname_to_cstring(sb, info->ShortName, &uni_name);
+ info->NumSubdirs = 0;
+ }
+
+ info->Size = p_fs->fs_func->get_entry_size(ep2);
+
+ if (p_fs->vol_type == EXFAT)
+ release_entry_set(es);
+
+ if (is_dir) {
+ dir.dir = fid->start_clu;
+ dir.flags = 0x01;
+
+ if (info->Size == 0)
+ info->Size = (u64)count_num_clusters(sb, &dir) <<
+ p_fs->cluster_size_bits;
+
+ count = count_dos_name_entries(sb, &dir, TYPE_DIR);
+ if (count < 0) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ info->NumSubdirs += count;
+ }
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+
+out:
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ pr_debug("%s exited successfully\n", __func__);
+ return ret;
+}
+
+static int ffsWriteStat(struct inode *inode, struct dir_entry_t *info)
+{
+ sector_t sector = 0;
+ int ret = FFS_SUCCESS;
+ struct timestamp_t tm;
+ struct dentry_t *ep, *ep2;
+ struct entry_set_cache_t *es = NULL;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct file_id_t *fid = &(EXFAT_I(inode)->fid);
+ u8 is_dir = (fid->type == TYPE_DIR) ? 1 : 0;
+
+ pr_debug("%s entered (inode %p info %p\n", __func__, inode, info);
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ if (is_dir) {
+ if ((fid->dir.dir == p_fs->root_dir) &&
+ (fid->entry == -1)) {
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+ ret = FFS_SUCCESS;
+ goto out;
+ }
+ }
+
+ fs_set_vol_flags(sb, VOL_DIRTY);
+
+ /* get the directory entry of given file or directory */
+ if (p_fs->vol_type == EXFAT) {
+ es = get_entry_set_in_dir(sb, &(fid->dir), fid->entry,
+ ES_ALL_ENTRIES, &ep);
+ if (es == NULL) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ ep2 = ep+1;
+ } else {
+ /* for other than exfat */
+ ep = get_entry_in_dir(sb, &(fid->dir), fid->entry, §or);
+ if (!ep) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ ep2 = ep;
+ }
+
+ p_fs->fs_func->set_entry_attr(ep, info->Attr);
+
+ /* set FILE_INFO structure using the acquired struct dentry_t */
+ tm.sec = info->CreateTimestamp.Second;
+ tm.min = info->CreateTimestamp.Minute;
+ tm.hour = info->CreateTimestamp.Hour;
+ tm.day = info->CreateTimestamp.Day;
+ tm.mon = info->CreateTimestamp.Month;
+ tm.year = info->CreateTimestamp.Year;
+ p_fs->fs_func->set_entry_time(ep, &tm, TM_CREATE);
+
+ tm.sec = info->ModifyTimestamp.Second;
+ tm.min = info->ModifyTimestamp.Minute;
+ tm.hour = info->ModifyTimestamp.Hour;
+ tm.day = info->ModifyTimestamp.Day;
+ tm.mon = info->ModifyTimestamp.Month;
+ tm.year = info->ModifyTimestamp.Year;
+ p_fs->fs_func->set_entry_time(ep, &tm, TM_MODIFY);
+
+ p_fs->fs_func->set_entry_size(ep2, info->Size);
+
+ if (p_fs->vol_type != EXFAT) {
+ buf_modify(sb, sector);
+ } else {
+ update_dir_checksum_with_entry_set(sb, es);
+ release_entry_set(es);
+ }
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+
+out:
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ pr_debug("%s exited (%d)\n", __func__, ret);
+
+ return ret;
+}
+
+static int ffsMapCluster(struct inode *inode, s32 clu_offset, u32 *clu)
+{
+ s32 num_clusters, num_alloced, modified = FALSE;
+ u32 last_clu;
+ int ret = FFS_SUCCESS;
+ sector_t sector = 0;
+ struct chain_t new_clu;
+ struct dentry_t *ep;
+ struct entry_set_cache_t *es = NULL;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct file_id_t *fid = &(EXFAT_I(inode)->fid);
+
+ /* check the validity of pointer parameters */
+ if (clu == NULL)
+ return FFS_ERROR;
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ fid->rwoffset = (s64)(clu_offset) << p_fs->cluster_size_bits;
+
+ if (EXFAT_I(inode)->mmu_private == 0)
+ num_clusters = 0;
+ else
+ num_clusters = (s32)((EXFAT_I(inode)->mmu_private - 1) >>
+ p_fs->cluster_size_bits) + 1;
+
+ *clu = last_clu = fid->start_clu;
+
+ if (fid->flags == 0x03) {
+ if ((clu_offset > 0) && (*clu != CLUSTER_32(~0))) {
+ last_clu += clu_offset - 1;
+
+ if (clu_offset == num_clusters)
+ *clu = CLUSTER_32(~0);
+ else
+ *clu += clu_offset;
+ }
+ } else {
+ /* hint information */
+ if ((clu_offset > 0) && (fid->hint_last_off > 0) &&
+ (clu_offset >= fid->hint_last_off)) {
+ clu_offset -= fid->hint_last_off;
+ *clu = fid->hint_last_clu;
+ }
+
+ while ((clu_offset > 0) && (*clu != CLUSTER_32(~0))) {
+ last_clu = *clu;
+ if (FAT_read(sb, *clu, clu) == -1) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ clu_offset--;
+ }
+ }
+
+ if (*clu == CLUSTER_32(~0)) {
+ fs_set_vol_flags(sb, VOL_DIRTY);
+
+ new_clu.dir = (last_clu == CLUSTER_32(~0)) ? CLUSTER_32(~0) :
+ last_clu + 1;
+ new_clu.size = 0;
+ new_clu.flags = fid->flags;
+
+ /* (1) allocate a cluster */
+ num_alloced = p_fs->fs_func->alloc_cluster(sb, 1, &new_clu);
+ if (num_alloced < 0) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ } else if (num_alloced == 0) {
+ ret = FFS_FULL;
+ goto out;
+ }
+
+ /* (2) append to the FAT chain */
+ if (last_clu == CLUSTER_32(~0)) {
+ if (new_clu.flags == 0x01)
+ fid->flags = 0x01;
+ fid->start_clu = new_clu.dir;
+ modified = TRUE;
+ } else {
+ if (new_clu.flags != fid->flags) {
+ exfat_chain_cont_cluster(sb, fid->start_clu,
+ num_clusters);
+ fid->flags = 0x01;
+ modified = TRUE;
+ }
+ if (new_clu.flags == 0x01)
+ FAT_write(sb, last_clu, new_clu.dir);
+ }
+
+ num_clusters += num_alloced;
+ *clu = new_clu.dir;
+
+ if (p_fs->vol_type == EXFAT) {
+ es = get_entry_set_in_dir(sb, &fid->dir, fid->entry,
+ ES_ALL_ENTRIES, &ep);
+ if (es == NULL) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ /* get stream entry */
+ ep++;
+ }
+
+ /* (3) update directory entry */
+ if (modified) {
+ if (p_fs->vol_type != EXFAT) {
+ ep = get_entry_in_dir(sb, &(fid->dir),
+ fid->entry, §or);
+ if (!ep) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ }
+
+ if (p_fs->fs_func->get_entry_flag(ep) != fid->flags)
+ p_fs->fs_func->set_entry_flag(ep, fid->flags);
+
+ if (p_fs->fs_func->get_entry_clu0(ep) != fid->start_clu)
+ p_fs->fs_func->set_entry_clu0(ep,
+ fid->start_clu);
+
+ if (p_fs->vol_type != EXFAT)
+ buf_modify(sb, sector);
+ }
+
+ if (p_fs->vol_type == EXFAT) {
+ update_dir_checksum_with_entry_set(sb, es);
+ release_entry_set(es);
+ }
+
+ /* add number of new blocks to inode */
+ inode->i_blocks += num_alloced << (p_fs->cluster_size_bits - 9);
+ }
+
+ /* hint information */
+ fid->hint_last_off = (s32)(fid->rwoffset >> p_fs->cluster_size_bits);
+ fid->hint_last_clu = *clu;
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+
+out:
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ return ret;
+}
+
+/*----------------------------------------------------------------------*/
+/* Directory Operation Functions */
+/*----------------------------------------------------------------------*/
+
+static int ffsCreateDir(struct inode *inode, char *path, struct file_id_t *fid)
+{
+ int ret = FFS_SUCCESS;
+ struct chain_t dir;
+ struct uni_name_t uni_name;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ pr_debug("%s entered\n", __func__);
+
+ /* check the validity of pointer parameters */
+ if ((fid == NULL) || (path == NULL) || (*path == '\0'))
+ return FFS_ERROR;
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ /* check the validity of directory name in the given old pathname */
+ ret = resolve_path(inode, path, &dir, &uni_name);
+ if (ret)
+ goto out;
+
+ fs_set_vol_flags(sb, VOL_DIRTY);
+
+ ret = create_dir(inode, &dir, &uni_name, fid);
+
+#ifdef CONFIG_EXFAT_DELAYED_SYNC
+ fs_sync(sb, false);
+ fs_set_vol_flags(sb, VOL_CLEAN);
+#endif
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+out:
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ return ret;
+}
+
+static int ffsReadDir(struct inode *inode, struct dir_entry_t *dir_entry)
+{
+ int i, dentry, clu_offset;
+ int ret = FFS_SUCCESS;
+ s32 dentries_per_clu, dentries_per_clu_bits = 0;
+ u32 type;
+ sector_t sector;
+ struct chain_t dir, clu;
+ struct uni_name_t uni_name;
+ struct timestamp_t tm;
+ struct dentry_t *ep;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct fs_func *fs_func = p_fs->fs_func;
+ struct file_id_t *fid = &(EXFAT_I(inode)->fid);
+
+ /* check the validity of pointer parameters */
+ if (dir_entry == NULL)
+ return FFS_ERROR;
+
+ /* check if the given file ID is opened */
+ if (fid->type != TYPE_DIR)
+ return FFS_PERMISSIONERR;
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ if (fid->entry == -1) {
+ dir.dir = p_fs->root_dir;
+ dir.flags = 0x01;
+ } else {
+ dir.dir = fid->start_clu;
+ dir.size = (s32)(fid->size >> p_fs->cluster_size_bits);
+ dir.flags = fid->flags;
+ }
+
+ dentry = (s32)fid->rwoffset;
+
+ if (dir.dir == CLUSTER_32(0)) {
+ /* FAT16 root_dir */
+ dentries_per_clu = p_fs->dentries_in_root;
+
+ if (dentry == dentries_per_clu) {
+ clu.dir = CLUSTER_32(~0);
+ } else {
+ clu.dir = dir.dir;
+ clu.size = dir.size;
+ clu.flags = dir.flags;
+ }
+ } else {
+ dentries_per_clu = p_fs->dentries_per_clu;
+ dentries_per_clu_bits = ilog2(dentries_per_clu);
+
+ clu_offset = dentry >> dentries_per_clu_bits;
+ clu.dir = dir.dir;
+ clu.size = dir.size;
+ clu.flags = dir.flags;
+
+ if (clu.flags == 0x03) {
+ clu.dir += clu_offset;
+ clu.size -= clu_offset;
+ } else {
+ /* hint_information */
+ if ((clu_offset > 0) && (fid->hint_last_off > 0) &&
+ (clu_offset >= fid->hint_last_off)) {
+ clu_offset -= fid->hint_last_off;
+ clu.dir = fid->hint_last_clu;
+ }
+
+ while (clu_offset > 0) {
+ /* clu.dir = FAT_read(sb, clu.dir); */
+ if (FAT_read(sb, clu.dir, &clu.dir) == -1) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ clu_offset--;
+ }
+ }
+ }
+
+ while (clu.dir != CLUSTER_32(~0)) {
+ if (p_fs->dev_ejected)
+ break;
+
+ if (dir.dir == CLUSTER_32(0)) /* FAT16 root_dir */
+ i = dentry % dentries_per_clu;
+ else
+ i = dentry & (dentries_per_clu-1);
+
+ for ( ; i < dentries_per_clu; i++, dentry++) {
+ ep = get_entry_in_dir(sb, &clu, i, §or);
+ if (!ep) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ type = fs_func->get_entry_type(ep);
+
+ if (type == TYPE_UNUSED)
+ break;
+
+ if ((type != TYPE_FILE) && (type != TYPE_DIR))
+ continue;
+
+ buf_lock(sb, sector);
+ dir_entry->Attr = fs_func->get_entry_attr(ep);
+
+ fs_func->get_entry_time(ep, &tm, TM_CREATE);
+ dir_entry->CreateTimestamp.Year = tm.year;
+ dir_entry->CreateTimestamp.Month = tm.mon;
+ dir_entry->CreateTimestamp.Day = tm.day;
+ dir_entry->CreateTimestamp.Hour = tm.hour;
+ dir_entry->CreateTimestamp.Minute = tm.min;
+ dir_entry->CreateTimestamp.Second = tm.sec;
+ dir_entry->CreateTimestamp.MilliSecond = 0;
+
+ fs_func->get_entry_time(ep, &tm, TM_MODIFY);
+ dir_entry->ModifyTimestamp.Year = tm.year;
+ dir_entry->ModifyTimestamp.Month = tm.mon;
+ dir_entry->ModifyTimestamp.Day = tm.day;
+ dir_entry->ModifyTimestamp.Hour = tm.hour;
+ dir_entry->ModifyTimestamp.Minute = tm.min;
+ dir_entry->ModifyTimestamp.Second = tm.sec;
+ dir_entry->ModifyTimestamp.MilliSecond = 0;
+
+ memset((char *)&dir_entry->AccessTimestamp, 0,
+ sizeof(struct date_time_t));
+
+ *(uni_name.name) = 0x0;
+ fs_func->get_uni_name_from_ext_entry(sb, &dir, dentry,
+ uni_name.name);
+ if (*uni_name.name == 0x0 && p_fs->vol_type != EXFAT)
+ get_uni_name_from_dos_entry(sb,
+ (struct dos_dentry_t *)ep,
+ &uni_name, 0x1);
+ nls_uniname_to_cstring(sb, dir_entry->Name, &uni_name);
+ buf_unlock(sb, sector);
+
+ if (p_fs->vol_type == EXFAT) {
+ ep = get_entry_in_dir(sb, &clu, i+1, NULL);
+ if (!ep) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ } else {
+ get_uni_name_from_dos_entry(sb,
+ (struct dos_dentry_t *)ep,
+ &uni_name, 0x0);
+ nls_uniname_to_cstring(sb, dir_entry->ShortName,
+ &uni_name);
+ }
+
+ dir_entry->Size = fs_func->get_entry_size(ep);
+
+ /* hint information */
+ if (dir.dir == CLUSTER_32(0)) { /* FAT16 root_dir */
+ } else {
+ fid->hint_last_off = dentry >>
+ dentries_per_clu_bits;
+ fid->hint_last_clu = clu.dir;
+ }
+
+ fid->rwoffset = (s64) ++dentry;
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+
+ if (dir.dir == CLUSTER_32(0))
+ break; /* FAT16 root_dir */
+
+ if (clu.flags == 0x03) {
+ if ((--clu.size) > 0)
+ clu.dir++;
+ else
+ clu.dir = CLUSTER_32(~0);
+ } else {
+ /* clu.dir = FAT_read(sb, clu.dir); */
+ if (FAT_read(sb, clu.dir, &clu.dir) == -1) {
+ ret = FFS_MEDIAERR;
+ goto out;
+ }
+ }
+ }
+
+ *(dir_entry->Name) = '\0';
+
+ fid->rwoffset = (s64) ++dentry;
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+
+out:
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ return ret;
+}
+
+static int ffsRemoveDir(struct inode *inode, struct file_id_t *fid)
+{
+ s32 dentry;
+ int ret = FFS_SUCCESS;
+ struct chain_t dir, clu_to_free;
+ struct super_block *sb = inode->i_sb;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ /* check the validity of the given file id */
+ if (fid == NULL)
+ return FFS_INVALIDFID;
+
+ dir.dir = fid->dir.dir;
+ dir.size = fid->dir.size;
+ dir.flags = fid->dir.flags;
+
+ dentry = fid->entry;
+
+ /* check if the file is "." or ".." */
+ if (p_fs->vol_type != EXFAT) {
+ if ((dir.dir != p_fs->root_dir) && (dentry < 2))
+ return FFS_PERMISSIONERR;
+ }
+
+ /* acquire the lock for file system critical section */
+ down(&p_fs->v_sem);
+
+ clu_to_free.dir = fid->start_clu;
+ clu_to_free.size = (s32)((fid->size-1) >> p_fs->cluster_size_bits) + 1;
+ clu_to_free.flags = fid->flags;
+
+ if (!is_dir_empty(sb, &clu_to_free)) {
+ ret = FFS_FILEEXIST;
+ goto out;
+ }
+
+ fs_set_vol_flags(sb, VOL_DIRTY);
+
+ /* (1) update the directory entry */
+ remove_file(inode, &dir, dentry);
+
+ /* (2) free the clusters */
+ p_fs->fs_func->free_cluster(sb, &clu_to_free, 1);
+
+ fid->size = 0;
+ fid->start_clu = CLUSTER_32(~0);
+ fid->flags = (p_fs->vol_type == EXFAT) ? 0x03 : 0x01;
+
+#ifdef CONFIG_EXFAT_DELAYED_SYNC
+ fs_sync(sb, false);
+ fs_set_vol_flags(sb, VOL_CLEAN);
+#endif
+
+ if (p_fs->dev_ejected)
+ ret = FFS_MEDIAERR;
+
+out:
+ /* release the lock for file system critical section */
+ up(&p_fs->v_sem);
+
+ return ret;
+}
+
+/*======================================================================*/
+/* Directory Entry Operations */
+/*======================================================================*/
+
+static int exfat_readdir(struct file *filp, struct dir_context *ctx)
+{
+ struct inode *inode = file_inode(filp);
+ struct super_block *sb = inode->i_sb;
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ struct fs_info_t *p_fs = &(sbi->fs_info);
+ struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
+ struct dir_entry_t de;
+ unsigned long inum;
+ loff_t cpos;
+ int err = 0;
+
+ __lock_super(sb);
+
+ cpos = ctx->pos;
+ /* Fake . and .. for the root directory. */
+ if ((p_fs->vol_type == EXFAT) || (inode->i_ino == EXFAT_ROOT_INO)) {
+ while (cpos < 2) {
+ if (inode->i_ino == EXFAT_ROOT_INO)
+ inum = EXFAT_ROOT_INO;
+ else if (cpos == 0)
+ inum = inode->i_ino;
+ else /* (cpos == 1) */
+ inum = parent_ino(filp->f_path.dentry);
+
+ if (!dir_emit_dots(filp, ctx))
+ goto out;
+ cpos++;
+ ctx->pos++;
+ }
+ if (cpos == 2)
+ cpos = 0;
+ }
+ if (cpos & (DENTRY_SIZE - 1)) {
+ err = -ENOENT;
+ goto out;
+ }
+
+get_new:
+ EXFAT_I(inode)->fid.size = i_size_read(inode);
+ EXFAT_I(inode)->fid.rwoffset = cpos >> DENTRY_SIZE_BITS;
+
+ err = ffsReadDir(inode, &de);
+ if (err) {
+ /* at least we tried to read a sector
+ * move cpos to next sector position (should be aligned)
+ */
+ if (err == FFS_MEDIAERR) {
+ cpos += 1 << p_bd->sector_size_bits;
+ cpos &= ~((1 << p_bd->sector_size_bits)-1);
+ }
+
+ err = -EIO;
+ goto end_of_dir;
+ }
+
+ cpos = EXFAT_I(inode)->fid.rwoffset << DENTRY_SIZE_BITS;
+
+ if (!de.Name[0])
+ goto end_of_dir;
+
+ if (!memcmp(de.ShortName, DOS_CUR_DIR_NAME, DOS_NAME_LENGTH)) {
+ inum = inode->i_ino;
+ } else if (!memcmp(de.ShortName, DOS_PAR_DIR_NAME, DOS_NAME_LENGTH)) {
+ inum = parent_ino(filp->f_path.dentry);
+ } else {
+ loff_t i_pos = ((loff_t) EXFAT_I(inode)->fid.start_clu << 32) |
+ ((EXFAT_I(inode)->fid.rwoffset-1) & 0xffffffff);
+ struct inode *tmp = exfat_iget(sb, i_pos);
+
+ if (tmp) {
+ inum = tmp->i_ino;
+ iput(tmp);
+ } else {
+ inum = iunique(sb, EXFAT_ROOT_INO);
+ }
+ }
+
+ if (!dir_emit(ctx, de.Name, strlen(de.Name), inum,
+ (de.Attr & ATTR_SUBDIR) ? DT_DIR : DT_REG))
+ goto out;
+
+ ctx->pos = cpos;
+ goto get_new;
+
+end_of_dir:
+ ctx->pos = cpos;
+out:
+ __unlock_super(sb);
+ return err;
+}
+
+static int exfat_ioctl_volume_id(struct inode *dir)
+{
+ struct super_block *sb = dir->i_sb;
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ struct fs_info_t *p_fs = &(sbi->fs_info);
+
+ return p_fs->vol_id;
+}
+
+static long exfat_generic_ioctl(struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+struct inode *inode = filp->f_path.dentry->d_inode;
+#ifdef CONFIG_EXFAT_KERNEL_DEBUG
+ unsigned int flags;
+#endif /* CONFIG_EXFAT_KERNEL_DEBUG */
+
+ switch (cmd) {
+ case EXFAT_IOCTL_GET_VOLUME_ID:
+ return exfat_ioctl_volume_id(inode);
+#ifdef CONFIG_EXFAT_KERNEL_DEBUG
+ case EXFAT_IOC_GET_DEBUGFLAGS: {
+ struct super_block *sb = inode->i_sb;
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+
+ flags = sbi->debug_flags;
+ return put_user(flags, (int __user *)arg);
+ }
+ case EXFAT_IOC_SET_DEBUGFLAGS: {
+ struct super_block *sb = inode->i_sb;
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (get_user(flags, (int __user *) arg))
+ return -EFAULT;
+
+ __lock_super(sb);
+ sbi->debug_flags = flags;
+ __unlock_super(sb);
+
+ return 0;
+ }
+#endif /* CONFIG_EXFAT_KERNEL_DEBUG */
+ default:
+ return -ENOTTY; /* Inappropriate ioctl for device */
+ }
+}
+
+static const struct file_operations exfat_dir_operations = {
+ .llseek = generic_file_llseek,
+ .read = generic_read_dir,
+ .iterate = exfat_readdir,
+ .unlocked_ioctl = exfat_generic_ioctl,
+ .fsync = generic_file_fsync,
+};
+
+static int exfat_create(struct inode *dir, struct dentry *dentry, umode_t mode,
+ bool excl)
+{
+ struct super_block *sb = dir->i_sb;
+ struct inode *inode;
+ struct file_id_t fid;
+ loff_t i_pos;
+ int err;
+
+ __lock_super(sb);
+
+ pr_debug("%s entered\n", __func__);
+
+ err = ffsCreateFile(dir, (u8 *) dentry->d_name.name, FM_REGULAR, &fid);
+ if (err) {
+ if (err == FFS_INVALIDPATH)
+ err = -EINVAL;
+ else if (err == FFS_FILEEXIST)
+ err = -EEXIST;
+ else if (err == FFS_FULL)
+ err = -ENOSPC;
+ else if (err == FFS_NAMETOOLONG)
+ err = -ENAMETOOLONG;
+ else
+ err = -EIO;
+ goto out;
+ }
+ INC_IVERSION(dir);
+ dir->i_ctime = dir->i_mtime = dir->i_atime = current_time(dir);
+ if (IS_DIRSYNC(dir))
+ (void) exfat_sync_inode(dir);
+ else
+ mark_inode_dirty(dir);
+
+ i_pos = ((loff_t) fid.dir.dir << 32) | (fid.entry & 0xffffffff);
+
+ inode = exfat_build_inode(sb, &fid, i_pos);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ goto out;
+ }
+ INC_IVERSION(inode);
+ inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+ /*
+ * timestamp is already written, so mark_inode_dirty() is unnecessary.
+ */
+
+ dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode);
+ d_instantiate(dentry, inode);
+
+out:
+ __unlock_super(sb);
+ pr_debug("%s exited\n", __func__);
+ return err;
+}
+
+static int exfat_find(struct inode *dir, struct qstr *qname,
+ struct file_id_t *fid)
+{
+ int err;
+
+ if (qname->len == 0)
+ return -ENOENT;
+
+ err = ffsLookupFile(dir, (u8 *) qname->name, fid);
+ if (err)
+ return -ENOENT;
+
+ return 0;
+}
+
+static int exfat_d_anon_disconn(struct dentry *dentry)
+{
+ return IS_ROOT(dentry) && (dentry->d_flags & DCACHE_DISCONNECTED);
+}
+
+static struct dentry *exfat_lookup(struct inode *dir, struct dentry *dentry,
+ unsigned int flags)
+{
+ struct super_block *sb = dir->i_sb;
+ struct inode *inode;
+ struct dentry *alias;
+ int err;
+ struct file_id_t fid;
+ loff_t i_pos;
+ u64 ret;
+ mode_t i_mode;
+
+ __lock_super(sb);
+ pr_debug("%s entered\n", __func__);
+ err = exfat_find(dir, &dentry->d_name, &fid);
+ if (err) {
+ if (err == -ENOENT) {
+ inode = NULL;
+ goto out;
+ }
+ goto error;
+ }
+
+ i_pos = ((loff_t) fid.dir.dir << 32) | (fid.entry & 0xffffffff);
+ inode = exfat_build_inode(sb, &fid, i_pos);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ goto error;
+ }
+
+ i_mode = inode->i_mode;
+ if (S_ISLNK(i_mode) && !EXFAT_I(inode)->target) {
+ EXFAT_I(inode)->target = kmalloc(i_size_read(inode) + 1,
+ GFP_KERNEL);
+ if (!EXFAT_I(inode)->target) {
+ err = -ENOMEM;
+ goto error;
+ }
+ ffsReadFile(dir, &fid, EXFAT_I(inode)->target,
+ i_size_read(inode), &ret);
+ *(EXFAT_I(inode)->target + i_size_read(inode)) = '\0';
+ }
+
+ alias = d_find_alias(inode);
+ if (alias && !exfat_d_anon_disconn(alias)) {
+ BUG_ON(d_unhashed(alias));
+ if (!S_ISDIR(i_mode))
+ d_move(alias, dentry);
+ iput(inode);
+ __unlock_super(sb);
+ pr_debug("%s exited 1\n", __func__);
+ return alias;
+ }
+ dput(alias);
+out:
+ __unlock_super(sb);
+ dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode);
+ dentry = d_splice_alias(inode, dentry);
+ if (dentry)
+ dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode);
+ pr_debug("%s exited 2\n", __func__);
+ return dentry;
+
+error:
+ __unlock_super(sb);
+ pr_debug("%s exited 3\n", __func__);
+ return ERR_PTR(err);
+}
+
+static inline unsigned long exfat_hash(loff_t i_pos)
+{
+ return hash_32(i_pos, EXFAT_HASH_BITS);
+}
+
+static void exfat_attach(struct inode *inode, loff_t i_pos)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb);
+ struct hlist_head *head = sbi->inode_hashtable + exfat_hash(i_pos);
+
+ spin_lock(&sbi->inode_hash_lock);
+ EXFAT_I(inode)->i_pos = i_pos;
+ hlist_add_head(&EXFAT_I(inode)->i_hash_fat, head);
+ spin_unlock(&sbi->inode_hash_lock);
+}
+
+static void exfat_detach(struct inode *inode)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb);
+
+ spin_lock(&sbi->inode_hash_lock);
+ hlist_del_init(&EXFAT_I(inode)->i_hash_fat);
+ EXFAT_I(inode)->i_pos = 0;
+ spin_unlock(&sbi->inode_hash_lock);
+}
+
+static int exfat_unlink(struct inode *dir, struct dentry *dentry)
+{
+ struct inode *inode = dentry->d_inode;
+ struct super_block *sb = dir->i_sb;
+ int err;
+
+ __lock_super(sb);
+
+ pr_debug("%s entered\n", __func__);
+
+ EXFAT_I(inode)->fid.size = i_size_read(inode);
+
+ err = ffsRemoveFile(dir, &(EXFAT_I(inode)->fid));
+ if (err) {
+ if (err == FFS_PERMISSIONERR)
+ err = -EPERM;
+ else
+ err = -EIO;
+ goto out;
+ }
+ INC_IVERSION(dir);
+ dir->i_mtime = dir->i_atime = current_time(dir);
+ if (IS_DIRSYNC(dir))
+ (void) exfat_sync_inode(dir);
+ else
+ mark_inode_dirty(dir);
+
+ clear_nlink(inode);
+ inode->i_mtime = inode->i_atime = current_time(inode);
+ exfat_detach(inode);
+ remove_inode_hash(inode);
+
+out:
+ __unlock_super(sb);
+ pr_debug("%s exited\n", __func__);
+ return err;
+}
+
+static int exfat_symlink(struct inode *dir, struct dentry *dentry,
+ const char *target)
+{
+ struct super_block *sb = dir->i_sb;
+ struct inode *inode;
+ struct file_id_t fid;
+ loff_t i_pos;
+ int err;
+ u64 len = (u64) strlen(target);
+ u64 ret;
+
+ __lock_super(sb);
+
+ pr_debug("%s entered\n", __func__);
+
+ err = ffsCreateFile(dir, (u8 *) dentry->d_name.name, FM_SYMLINK, &fid);
+ if (err) {
+ if (err == FFS_INVALIDPATH)
+ err = -EINVAL;
+ else if (err == FFS_FILEEXIST)
+ err = -EEXIST;
+ else if (err == FFS_FULL)
+ err = -ENOSPC;
+ else
+ err = -EIO;
+ goto out;
+ }
+
+ err = ffsWriteFile(dir, &fid, (char *) target, len, &ret);
+
+ if (err) {
+ ffsRemoveFile(dir, &fid);
+
+ if (err == FFS_FULL)
+ err = -ENOSPC;
+ else
+ err = -EIO;
+ goto out;
+ }
+
+ INC_IVERSION(dir);
+ dir->i_ctime = dir->i_mtime = dir->i_atime = current_time(dir);
+ if (IS_DIRSYNC(dir))
+ (void) exfat_sync_inode(dir);
+ else
+ mark_inode_dirty(dir);
+
+ i_pos = ((loff_t) fid.dir.dir << 32) | (fid.entry & 0xffffffff);
+
+ inode = exfat_build_inode(sb, &fid, i_pos);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ goto out;
+ }
+ INC_IVERSION(inode);
+ inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+ /* timestamp is already written, so mark_inode_dirty() is unneeded. */
+
+ EXFAT_I(inode)->target = kmalloc(len+1, GFP_KERNEL);
+ if (!EXFAT_I(inode)->target) {
+ err = -ENOMEM;
+ goto out;
+ }
+ memcpy(EXFAT_I(inode)->target, target, len+1);
+
+ dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode);
+ d_instantiate(dentry, inode);
+
+out:
+ __unlock_super(sb);
+ pr_debug("%s exited\n", __func__);
+ return err;
+}
+
+static int exfat_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
+{
+ struct super_block *sb = dir->i_sb;
+ struct inode *inode;
+ struct file_id_t fid;
+ loff_t i_pos;
+ int err;
+
+ __lock_super(sb);
+
+ pr_debug("%s entered\n", __func__);
+
+ err = ffsCreateDir(dir, (u8 *) dentry->d_name.name, &fid);
+ if (err) {
+ if (err == FFS_INVALIDPATH)
+ err = -EINVAL;
+ else if (err == FFS_FILEEXIST)
+ err = -EEXIST;
+ else if (err == FFS_FULL)
+ err = -ENOSPC;
+ else if (err == FFS_NAMETOOLONG)
+ err = -ENAMETOOLONG;
+ else
+ err = -EIO;
+ goto out;
+ }
+ INC_IVERSION(dir);
+ dir->i_ctime = dir->i_mtime = dir->i_atime = current_time(dir);
+ if (IS_DIRSYNC(dir))
+ (void) exfat_sync_inode(dir);
+ else
+ mark_inode_dirty(dir);
+ inc_nlink(dir);
+
+ i_pos = ((loff_t) fid.dir.dir << 32) | (fid.entry & 0xffffffff);
+
+ inode = exfat_build_inode(sb, &fid, i_pos);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ goto out;
+ }
+ INC_IVERSION(inode);
+ inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+ /* timestamp is already written, so mark_inode_dirty() is unneeded. */
+
+ dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode);
+ d_instantiate(dentry, inode);
+
+out:
+ __unlock_super(sb);
+ pr_debug("%s exited\n", __func__);
+ return err;
+}
+
+static int exfat_rmdir(struct inode *dir, struct dentry *dentry)
+{
+ struct inode *inode = dentry->d_inode;
+ struct super_block *sb = dir->i_sb;
+ int err;
+
+ __lock_super(sb);
+
+ pr_debug("%s entered\n", __func__);
+
+ EXFAT_I(inode)->fid.size = i_size_read(inode);
+
+ err = ffsRemoveDir(dir, &(EXFAT_I(inode)->fid));
+ if (err) {
+ if (err == FFS_INVALIDPATH)
+ err = -EINVAL;
+ else if (err == FFS_FILEEXIST)
+ err = -ENOTEMPTY;
+ else if (err == FFS_NOTFOUND)
+ err = -ENOENT;
+ else if (err == FFS_DIRBUSY)
+ err = -EBUSY;
+ else
+ err = -EIO;
+ goto out;
+ }
+ INC_IVERSION(dir);
+ dir->i_mtime = dir->i_atime = current_time(dir);
+ if (IS_DIRSYNC(dir))
+ (void) exfat_sync_inode(dir);
+ else
+ mark_inode_dirty(dir);
+ drop_nlink(dir);
+
+ clear_nlink(inode);
+ inode->i_mtime = inode->i_atime = current_time(inode);
+ exfat_detach(inode);
+ remove_inode_hash(inode);
+
+out:
+ __unlock_super(sb);
+ pr_debug("%s exited\n", __func__);
+ return err;
+}
+
+static int exfat_rename(struct inode *old_dir, struct dentry *old_dentry,
+ struct inode *new_dir, struct dentry *new_dentry,
+ unsigned int flags)
+{
+ struct inode *old_inode, *new_inode;
+ struct super_block *sb = old_dir->i_sb;
+ loff_t i_pos;
+ int err;
+
+ if (flags)
+ return -EINVAL;
+
+ __lock_super(sb);
+
+ pr_debug("%s entered\n", __func__);
+
+ old_inode = old_dentry->d_inode;
+ new_inode = new_dentry->d_inode;
+
+ EXFAT_I(old_inode)->fid.size = i_size_read(old_inode);
+
+ err = ffsMoveFile(old_dir, &(EXFAT_I(old_inode)->fid), new_dir,
+ new_dentry);
+ if (err) {
+ if (err == FFS_PERMISSIONERR)
+ err = -EPERM;
+ else if (err == FFS_INVALIDPATH)
+ err = -EINVAL;
+ else if (err == FFS_FILEEXIST)
+ err = -EEXIST;
+ else if (err == FFS_NOTFOUND)
+ err = -ENOENT;
+ else if (err == FFS_FULL)
+ err = -ENOSPC;
+ else
+ err = -EIO;
+ goto out;
+ }
+ INC_IVERSION(new_dir);
+ new_dir->i_ctime = new_dir->i_mtime = new_dir->i_atime =
+ current_time(new_dir);
+ if (IS_DIRSYNC(new_dir))
+ (void) exfat_sync_inode(new_dir);
+ else
+ mark_inode_dirty(new_dir);
+
+ i_pos = ((loff_t) EXFAT_I(old_inode)->fid.dir.dir << 32) |
+ (EXFAT_I(old_inode)->fid.entry & 0xffffffff);
+
+ exfat_detach(old_inode);
+ exfat_attach(old_inode, i_pos);
+ if (IS_DIRSYNC(new_dir))
+ (void) exfat_sync_inode(old_inode);
+ else
+ mark_inode_dirty(old_inode);
+
+ if ((S_ISDIR(old_inode->i_mode)) && (old_dir != new_dir)) {
+ drop_nlink(old_dir);
+ if (!new_inode)
+ inc_nlink(new_dir);
+ }
+ INC_IVERSION(old_dir);
+ old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir);
+ if (IS_DIRSYNC(old_dir))
+ (void) exfat_sync_inode(old_dir);
+ else
+ mark_inode_dirty(old_dir);
+
+ if (new_inode) {
+ exfat_detach(new_inode);
+ drop_nlink(new_inode);
+ if (S_ISDIR(new_inode->i_mode))
+ drop_nlink(new_inode);
+ new_inode->i_ctime = current_time(new_inode);
+ }
+
+out:
+ __unlock_super(sb);
+ pr_debug("%s exited\n", __func__);
+ return err;
+}
+
+static int exfat_cont_expand(struct inode *inode, loff_t size)
+{
+ struct address_space *mapping = inode->i_mapping;
+ loff_t start = i_size_read(inode), count = size - i_size_read(inode);
+ int err, err2;
+
+ err = generic_cont_expand_simple(inode, size);
+ if (err != 0)
+ return err;
+
+ inode->i_ctime = inode->i_mtime = current_time(inode);
+ mark_inode_dirty(inode);
+
+ if (IS_SYNC(inode)) {
+ err = filemap_fdatawrite_range(mapping, start,
+ start + count - 1);
+ err2 = sync_mapping_buffers(mapping);
+ err = (err) ? (err) : (err2);
+ err2 = write_inode_now(inode, 1);
+ err = (err) ? (err) : (err2);
+ if (!err)
+ err = filemap_fdatawait_range(mapping, start,
+ start + count - 1);
+ }
+ return err;
+}
+
+static int exfat_allow_set_time(struct exfat_sb_info *sbi, struct inode *inode)
+{
+ mode_t allow_utime = sbi->options.allow_utime;
+
+ if (!uid_eq(current_fsuid(), inode->i_uid)) {
+ if (in_group_p(inode->i_gid))
+ allow_utime >>= 3;
+ if (allow_utime & MAY_WRITE)
+ return 1;
+ }
+
+ /* use a default check */
+ return 0;
+}
+
+static int exfat_sanitize_mode(const struct exfat_sb_info *sbi,
+ struct inode *inode, umode_t *mode_ptr)
+{
+ mode_t i_mode, mask, perm;
+
+ i_mode = inode->i_mode;
+
+ if (S_ISREG(i_mode) || S_ISLNK(i_mode))
+ mask = sbi->options.fs_fmask;
+ else
+ mask = sbi->options.fs_dmask;
+
+ perm = *mode_ptr & ~(S_IFMT | mask);
+
+ /* Of the r and x bits, all (subject to umask) must be present.*/
+ if ((perm & 0555) != (i_mode & 0555))
+ return -EPERM;
+
+ if (exfat_mode_can_hold_ro(inode)) {
+ /*
+ * Of the w bits, either all (subject to umask) or none must be
+ * present.
+ */
+ if ((perm & 0222) && ((perm & 0222) != (0222 & ~mask)))
+ return -EPERM;
+ } else {
+ /*
+ * If exfat_mode_can_hold_ro(inode) is false, can't change w
+ * bits.
+ */
+ if ((perm & 0222) != (0222 & ~mask))
+ return -EPERM;
+ }
+
+ *mode_ptr &= S_IFMT | perm;
+
+ return 0;
+}
+
+static void exfat_truncate(struct inode *inode, loff_t old_size)
+{
+ struct super_block *sb = inode->i_sb;
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ struct fs_info_t *p_fs = &(sbi->fs_info);
+ int err;
+
+ __lock_super(sb);
+
+ /*
+ * This protects against truncating a file bigger than it was then
+ * trying to write into the hole.
+ */
+ if (EXFAT_I(inode)->mmu_private > i_size_read(inode))
+ EXFAT_I(inode)->mmu_private = i_size_read(inode);
+
+ if (EXFAT_I(inode)->fid.start_clu == 0)
+ goto out;
+
+ err = ffsTruncateFile(inode, old_size, i_size_read(inode));
+ if (err)
+ goto out;
+
+ inode->i_ctime = inode->i_mtime = current_time(inode);
+ if (IS_DIRSYNC(inode))
+ (void) exfat_sync_inode(inode);
+ else
+ mark_inode_dirty(inode);
+
+ inode->i_blocks = ((i_size_read(inode) + (p_fs->cluster_size - 1)) &
+ ~((loff_t)p_fs->cluster_size - 1)) >> 9;
+out:
+ __unlock_super(sb);
+}
+
+static int exfat_setattr(struct dentry *dentry, struct iattr *attr)
+{
+
+ struct exfat_sb_info *sbi = EXFAT_SB(dentry->d_sb);
+ struct inode *inode = dentry->d_inode;
+ unsigned int ia_valid;
+ int error;
+ loff_t old_size;
+
+ pr_debug("%s entered\n", __func__);
+
+ if ((attr->ia_valid & ATTR_SIZE)
+ && (attr->ia_size > i_size_read(inode))) {
+ error = exfat_cont_expand(inode, attr->ia_size);
+ if (error || attr->ia_valid == ATTR_SIZE)
+ return error;
+ attr->ia_valid &= ~ATTR_SIZE;
+ }
+
+ ia_valid = attr->ia_valid;
+
+ if ((ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET))
+ && exfat_allow_set_time(sbi, inode)) {
+ attr->ia_valid &= ~(ATTR_MTIME_SET |
+ ATTR_ATIME_SET |
+ ATTR_TIMES_SET);
+ }
+
+ error = setattr_prepare(dentry, attr);
+ attr->ia_valid = ia_valid;
+ if (error)
+ return error;
+
+ if (((attr->ia_valid & ATTR_UID) &&
+ (!uid_eq(attr->ia_uid, sbi->options.fs_uid))) ||
+ ((attr->ia_valid & ATTR_GID) &&
+ (!gid_eq(attr->ia_gid, sbi->options.fs_gid))) ||
+ ((attr->ia_valid & ATTR_MODE) &&
+ (attr->ia_mode & ~(S_IFREG | S_IFLNK | S_IFDIR | 0777)))) {
+ return -EPERM;
+ }
+
+ /*
+ * We don't return -EPERM here. Yes, strange, but this is too
+ * old behavior.
+ */
+ if (attr->ia_valid & ATTR_MODE) {
+ if (exfat_sanitize_mode(sbi, inode, &attr->ia_mode) < 0)
+ attr->ia_valid &= ~ATTR_MODE;
+ }
+
+ EXFAT_I(inode)->fid.size = i_size_read(inode);
+
+ if (attr->ia_valid & ATTR_SIZE) {
+ old_size = i_size_read(inode);
+ down_write(&EXFAT_I(inode)->truncate_lock);
+ truncate_setsize(inode, attr->ia_size);
+ exfat_truncate(inode, old_size);
+ up_write(&EXFAT_I(inode)->truncate_lock);
+ }
+ setattr_copy(inode, attr);
+ mark_inode_dirty(inode);
+
+ pr_debug("%s exited\n", __func__);
+ return error;
+}
+
+static int exfat_getattr(const struct path *path, struct kstat *stat,
+ u32 request_mask, unsigned int flags)
+{
+ struct inode *inode = path->dentry->d_inode;
+
+ pr_debug("%s entered\n", __func__);
+
+ generic_fillattr(inode, stat);
+ stat->blksize = EXFAT_SB(inode->i_sb)->fs_info.cluster_size;
+
+ pr_debug("%s exited\n", __func__);
+ return 0;
+}
+
+static const struct inode_operations exfat_dir_inode_operations = {
+ .create = exfat_create,
+ .lookup = exfat_lookup,
+ .unlink = exfat_unlink,
+ .symlink = exfat_symlink,
+ .mkdir = exfat_mkdir,
+ .rmdir = exfat_rmdir,
+ .rename = exfat_rename,
+ .setattr = exfat_setattr,
+ .getattr = exfat_getattr,
+};
+
+/*======================================================================*/
+/* File Operations */
+/*======================================================================*/
+static const char *exfat_get_link(struct dentry *dentry, struct inode *inode,
+ struct delayed_call *done)
+{
+ struct exfat_inode_info *ei = EXFAT_I(inode);
+
+ if (ei->target != NULL) {
+ char *cookie = ei->target;
+
+ if (cookie != NULL)
+ return (char *)(ei->target);
+ }
+ return NULL;
+}
+
+static const struct inode_operations exfat_symlink_inode_operations = {
+ .get_link = exfat_get_link,
+};
+
+static int exfat_file_release(struct inode *inode, struct file *filp)
+{
+ struct super_block *sb = inode->i_sb;
+
+ EXFAT_I(inode)->fid.size = i_size_read(inode);
+ ffsSyncVol(sb, false);
+ return 0;
+}
+
+static const struct file_operations exfat_file_operations = {
+ .llseek = generic_file_llseek,
+ .read_iter = generic_file_read_iter,
+ .write_iter = generic_file_write_iter,
+ .mmap = generic_file_mmap,
+ .release = exfat_file_release,
+ .unlocked_ioctl = exfat_generic_ioctl,
+ .fsync = generic_file_fsync,
+ .splice_read = generic_file_splice_read,
+};
+
+static const struct inode_operations exfat_file_inode_operations = {
+ .setattr = exfat_setattr,
+ .getattr = exfat_getattr,
+};
+
+/*======================================================================*/
+/* Address Space Operations */
+/*======================================================================*/
+
+static int exfat_bmap(struct inode *inode, sector_t sector, sector_t *phys,
+ unsigned long *mapped_blocks, int *create)
+{
+ struct super_block *sb = inode->i_sb;
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ struct fs_info_t *p_fs = &(sbi->fs_info);
+ struct bd_info_t *p_bd = &(sbi->bd_info);
+ const unsigned long blocksize = sb->s_blocksize;
+ const unsigned char blocksize_bits = sb->s_blocksize_bits;
+ sector_t last_block;
+ int err, clu_offset, sec_offset;
+ unsigned int cluster;
+
+ *phys = 0;
+ *mapped_blocks = 0;
+
+ if ((p_fs->vol_type == FAT12) || (p_fs->vol_type == FAT16)) {
+ if (inode->i_ino == EXFAT_ROOT_INO) {
+ if (sector <
+ (p_fs->dentries_in_root >>
+ (p_bd->sector_size_bits-DENTRY_SIZE_BITS))) {
+ *phys = sector + p_fs->root_start_sector;
+ *mapped_blocks = 1;
+ }
+ return 0;
+ }
+ }
+
+ last_block = (i_size_read(inode) + (blocksize - 1)) >> blocksize_bits;
+ if (sector >= last_block) {
+ if (*create == 0)
+ return 0;
+ } else {
+ *create = 0;
+ }
+
+ /* cluster offset */
+ clu_offset = sector >> p_fs->sectors_per_clu_bits;
+
+ /* sector offset in cluster */
+ sec_offset = sector & (p_fs->sectors_per_clu - 1);
+
+ EXFAT_I(inode)->fid.size = i_size_read(inode);
+
+ err = ffsMapCluster(inode, clu_offset, &cluster);
+
+ if (err) {
+ if (err == FFS_FULL)
+ return -ENOSPC;
+ else
+ return -EIO;
+ } else if (cluster != CLUSTER_32(~0)) {
+ *phys = START_SECTOR(cluster) + sec_offset;
+ *mapped_blocks = p_fs->sectors_per_clu - sec_offset;
+ }
+
+ return 0;
+}
+
+static int exfat_get_block(struct inode *inode, sector_t iblock,
+ struct buffer_head *bh_result, int create)
+{
+ struct super_block *sb = inode->i_sb;
+ unsigned long max_blocks = bh_result->b_size >> inode->i_blkbits;
+ int err;
+ unsigned long mapped_blocks;
+ sector_t phys;
+
+ __lock_super(sb);
+
+ err = exfat_bmap(inode, iblock, &phys, &mapped_blocks, &create);
+ if (err) {
+ __unlock_super(sb);
+ return err;
+ }
+
+ if (phys) {
+ max_blocks = min(mapped_blocks, max_blocks);
+ if (create) {
+ EXFAT_I(inode)->mmu_private += max_blocks <<
+ sb->s_blocksize_bits;
+ set_buffer_new(bh_result);
+ }
+ map_bh(bh_result, sb, phys);
+ }
+
+ bh_result->b_size = max_blocks << sb->s_blocksize_bits;
+ __unlock_super(sb);
+
+ return 0;
+}
+
+static int exfat_readpage(struct file *file, struct page *page)
+{
+ return mpage_readpage(page, exfat_get_block);
+}
+
+static int exfat_readpages(struct file *file, struct address_space *mapping,
+ struct list_head *pages, unsigned int nr_pages)
+{
+ return mpage_readpages(mapping, pages, nr_pages, exfat_get_block);
+}
+
+static int exfat_writepage(struct page *page, struct writeback_control *wbc)
+{
+ return block_write_full_page(page, exfat_get_block, wbc);
+}
+
+static int exfat_writepages(struct address_space *mapping,
+ struct writeback_control *wbc)
+{
+ return mpage_writepages(mapping, wbc, exfat_get_block);
+}
+
+static void exfat_write_failed(struct address_space *mapping, loff_t to)
+{
+ struct inode *inode = mapping->host;
+
+ if (to > i_size_read(inode)) {
+ truncate_pagecache(inode, i_size_read(inode));
+ EXFAT_I(inode)->fid.size = i_size_read(inode);
+ exfat_truncate(inode, i_size_read(inode));
+ }
+}
+
+static int exfat_write_begin(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned int len, unsigned int flags,
+ struct page **pagep, void **fsdata)
+{
+ int ret;
+
+ *pagep = NULL;
+ ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+ exfat_get_block,
+ &EXFAT_I(mapping->host)->mmu_private);
+
+ if (ret < 0)
+ exfat_write_failed(mapping, pos+len);
+ return ret;
+}
+
+static int exfat_write_end(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned int len, unsigned int copied,
+ struct page *pagep, void *fsdata)
+{
+ struct inode *inode = mapping->host;
+ struct file_id_t *fid = &(EXFAT_I(inode)->fid);
+ int err;
+
+ err = generic_write_end(file, mapping, pos, len, copied, pagep, fsdata);
+
+ if (err < len)
+ exfat_write_failed(mapping, pos+len);
+
+ if (!(err < 0) && !(fid->attr & ATTR_ARCHIVE)) {
+ inode->i_mtime = inode->i_ctime = current_time(inode);
+ fid->attr |= ATTR_ARCHIVE;
+ mark_inode_dirty(inode);
+ }
+ return err;
+}
+
+static ssize_t exfat_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
+{
+ struct inode *inode = iocb->ki_filp->f_mapping->host;
+ struct address_space *mapping = iocb->ki_filp->f_mapping;
+ ssize_t ret;
+ int rw;
+
+ rw = iov_iter_rw(iter);
+
+ if (rw == WRITE) {
+ if (EXFAT_I(inode)->mmu_private < iov_iter_count(iter))
+ return 0;
+ }
+ ret = blockdev_direct_IO(iocb, inode, iter, exfat_get_block);
+
+ if ((ret < 0) && (rw & WRITE))
+ exfat_write_failed(mapping, iov_iter_count(iter));
+ return ret;
+}
+
+static sector_t _exfat_bmap(struct address_space *mapping, sector_t block)
+{
+ sector_t blocknr;
+
+ /* exfat_get_cluster() assumes the requested blocknr isn't truncated. */
+ down_read(&EXFAT_I(mapping->host)->truncate_lock);
+ blocknr = generic_block_bmap(mapping, block, exfat_get_block);
+ up_read(&EXFAT_I(mapping->host)->truncate_lock);
+
+ return blocknr;
+}
+
+static const struct address_space_operations exfat_aops = {
+ .readpage = exfat_readpage,
+ .readpages = exfat_readpages,
+ .writepage = exfat_writepage,
+ .writepages = exfat_writepages,
+ .write_begin = exfat_write_begin,
+ .write_end = exfat_write_end,
+ .direct_IO = exfat_direct_IO,
+ .bmap = _exfat_bmap
+};
+
+/*======================================================================*/
+/* Super Operations */
+/*======================================================================*/
+
+static struct inode *exfat_iget(struct super_block *sb, loff_t i_pos)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ struct exfat_inode_info *info;
+ struct hlist_head *head = sbi->inode_hashtable + exfat_hash(i_pos);
+ struct inode *inode = NULL;
+
+ spin_lock(&sbi->inode_hash_lock);
+ hlist_for_each_entry(info, head, i_hash_fat) {
+ BUG_ON(info->vfs_inode.i_sb != sb);
+
+ if (i_pos != info->i_pos)
+ continue;
+ inode = igrab(&info->vfs_inode);
+ if (inode)
+ break;
+ }
+ spin_unlock(&sbi->inode_hash_lock);
+ return inode;
+}
+
+/* doesn't deal with root inode */
+static int exfat_fill_inode(struct inode *inode, struct file_id_t *fid)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb);
+ struct fs_info_t *p_fs = &(sbi->fs_info);
+ struct dir_entry_t info;
+
+ memcpy(&(EXFAT_I(inode)->fid), fid, sizeof(struct file_id_t));
+
+ ffsReadStat(inode, &info);
+
+ EXFAT_I(inode)->i_pos = 0;
+ EXFAT_I(inode)->target = NULL;
+ inode->i_uid = sbi->options.fs_uid;
+ inode->i_gid = sbi->options.fs_gid;
+ INC_IVERSION(inode);
+ inode->i_generation = get_seconds();
+
+ if (info.Attr & ATTR_SUBDIR) { /* directory */
+ inode->i_generation &= ~1;
+ inode->i_mode = exfat_make_mode(sbi, info.Attr, 0777);
+ inode->i_op = &exfat_dir_inode_operations;
+ inode->i_fop = &exfat_dir_operations;
+
+ i_size_write(inode, info.Size);
+ EXFAT_I(inode)->mmu_private = i_size_read(inode);
+ set_nlink(inode, info.NumSubdirs);
+ } else if (info.Attr & ATTR_SYMLINK) { /* symbolic link */
+ inode->i_generation |= 1;
+ inode->i_mode = exfat_make_mode(sbi, info.Attr, 0777);
+ inode->i_op = &exfat_symlink_inode_operations;
+
+ i_size_write(inode, info.Size);
+ EXFAT_I(inode)->mmu_private = i_size_read(inode);
+ } else { /* regular file */
+ inode->i_generation |= 1;
+ inode->i_mode = exfat_make_mode(sbi, info.Attr, 0777);
+ inode->i_op = &exfat_file_inode_operations;
+ inode->i_fop = &exfat_file_operations;
+ inode->i_mapping->a_ops = &exfat_aops;
+ inode->i_mapping->nrpages = 0;
+
+ i_size_write(inode, info.Size);
+ EXFAT_I(inode)->mmu_private = i_size_read(inode);
+ }
+ exfat_save_attr(inode, info.Attr);
+
+ inode->i_blocks = ((i_size_read(inode) + (p_fs->cluster_size - 1))
+ & ~((loff_t)p_fs->cluster_size - 1)) >> 9;
+
+ exfat_time_fat2unix(sbi, &inode->i_mtime, &info.ModifyTimestamp);
+ exfat_time_fat2unix(sbi, &inode->i_ctime, &info.CreateTimestamp);
+ exfat_time_fat2unix(sbi, &inode->i_atime, &info.AccessTimestamp);
+
+ return 0;
+}
+
+static struct inode *exfat_build_inode(struct super_block *sb,
+ struct file_id_t *fid, loff_t i_pos)
+{
+ struct inode *inode;
+ int err;
+
+ inode = exfat_iget(sb, i_pos);
+ if (inode)
+ goto out;
+ inode = new_inode(sb);
+ if (!inode) {
+ inode = ERR_PTR(-ENOMEM);
+ goto out;
+ }
+ inode->i_ino = iunique(sb, EXFAT_ROOT_INO);
+ SET_IVERSION(inode, 1);
+ err = exfat_fill_inode(inode, fid);
+ if (err) {
+ iput(inode);
+ inode = ERR_PTR(err);
+ goto out;
+ }
+ exfat_attach(inode, i_pos);
+ insert_inode_hash(inode);
+out:
+ return inode;
+}
+
+static int exfat_sync_inode(struct inode *inode)
+{
+ return exfat_write_inode(inode, NULL);
+}
+
+static struct inode *exfat_alloc_inode(struct super_block *sb)
+{
+ struct exfat_inode_info *ei;
+
+ ei = kmem_cache_alloc(exfat_inode_cachep, GFP_NOFS);
+ if (!ei)
+ return NULL;
+
+ init_rwsem(&ei->truncate_lock);
+
+ return &ei->vfs_inode;
+}
+
+static void exfat_destroy_inode(struct inode *inode)
+{
+ if (EXFAT_I(inode)->target)
+ kfree(EXFAT_I(inode)->target);
+ EXFAT_I(inode)->target = NULL;
+
+ kmem_cache_free(exfat_inode_cachep, EXFAT_I(inode));
+}
+
+static int exfat_write_inode(struct inode *inode, struct writeback_control *wbc)
+{
+ struct super_block *sb = inode->i_sb;
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ struct dir_entry_t info;
+
+ if (inode->i_ino == EXFAT_ROOT_INO)
+ return 0;
+
+ info.Attr = exfat_make_attr(inode);
+ info.Size = i_size_read(inode);
+
+ exfat_time_unix2fat(sbi, &inode->i_mtime, &info.ModifyTimestamp);
+ exfat_time_unix2fat(sbi, &inode->i_ctime, &info.CreateTimestamp);
+ exfat_time_unix2fat(sbi, &inode->i_atime, &info.AccessTimestamp);
+
+ ffsWriteStat(inode, &info);
+
+ return 0;
+}
+
+static void exfat_evict_inode(struct inode *inode)
+{
+ truncate_inode_pages(&inode->i_data, 0);
+
+ if (!inode->i_nlink)
+ i_size_write(inode, 0);
+ invalidate_inode_buffers(inode);
+ clear_inode(inode);
+ exfat_detach(inode);
+
+ remove_inode_hash(inode);
+}
+
+static void exfat_free_super(struct exfat_sb_info *sbi)
+{
+ if (sbi->nls_disk)
+ unload_nls(sbi->nls_disk);
+ if (sbi->nls_io)
+ unload_nls(sbi->nls_io);
+ if (sbi->options.iocharset != exfat_default_iocharset)
+ kfree(sbi->options.iocharset);
+ /* mutex_init is in exfat_fill_super function. only for 3.7+ */
+ mutex_destroy(&sbi->s_lock);
+ kfree(sbi);
+}
+
+static void exfat_put_super(struct super_block *sb)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+
+ if (__is_sb_dirty(sb))
+ exfat_write_super(sb);
+
+ ffsUmountVol(sb);
+
+ sb->s_fs_info = NULL;
+ exfat_free_super(sbi);
+}
+
+static void exfat_write_super(struct super_block *sb)
+{
+ __lock_super(sb);
+
+ __set_sb_clean(sb);
+
+ if (!sb_rdonly(sb))
+ ffsSyncVol(sb, true);
+
+ __unlock_super(sb);
+}
+
+static int exfat_sync_fs(struct super_block *sb, int wait)
+{
+ int err = 0;
+
+ if (__is_sb_dirty(sb)) {
+ __lock_super(sb);
+ __set_sb_clean(sb);
+ err = ffsSyncVol(sb, true);
+ __unlock_super(sb);
+ }
+
+ return err;
+}
+
+static int exfat_statfs(struct dentry *dentry, struct kstatfs *buf)
+{
+ struct super_block *sb = dentry->d_sb;
+ u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+ struct vol_info_t info;
+
+ if (p_fs->used_clusters == (u32) ~0) {
+ if (ffsGetVolInfo(sb, &info) == FFS_MEDIAERR)
+ return -EIO;
+
+ } else {
+ info.FatType = p_fs->vol_type;
+ info.ClusterSize = p_fs->cluster_size;
+ info.NumClusters = p_fs->num_clusters - 2;
+ info.UsedClusters = p_fs->used_clusters;
+ info.FreeClusters = info.NumClusters - info.UsedClusters;
+
+ if (p_fs->dev_ejected)
+ pr_info("[EXFAT] statfs on device that is ejected\n");
+ }
+
+ buf->f_type = sb->s_magic;
+ buf->f_bsize = info.ClusterSize;
+ buf->f_blocks = info.NumClusters;
+ buf->f_bfree = info.FreeClusters;
+ buf->f_bavail = info.FreeClusters;
+ buf->f_fsid.val[0] = (u32)id;
+ buf->f_fsid.val[1] = (u32)(id >> 32);
+ buf->f_namelen = 260;
+
+ return 0;
+}
+
+static int exfat_remount(struct super_block *sb, int *flags, char *data)
+{
+ *flags |= SB_NODIRATIME;
+ return 0;
+}
+
+static int exfat_show_options(struct seq_file *m, struct dentry *root)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(root->d_sb);
+ struct exfat_mount_options *opts = &sbi->options;
+
+ if (__kuid_val(opts->fs_uid))
+ seq_printf(m, ",uid=%u", __kuid_val(opts->fs_uid));
+ if (__kgid_val(opts->fs_gid))
+ seq_printf(m, ",gid=%u", __kgid_val(opts->fs_gid));
+ seq_printf(m, ",fmask=%04o", opts->fs_fmask);
+ seq_printf(m, ",dmask=%04o", opts->fs_dmask);
+ if (opts->allow_utime)
+ seq_printf(m, ",allow_utime=%04o", opts->allow_utime);
+ if (sbi->nls_disk)
+ seq_printf(m, ",codepage=%s", sbi->nls_disk->charset);
+ if (sbi->nls_io)
+ seq_printf(m, ",iocharset=%s", sbi->nls_io->charset);
+ seq_printf(m, ",namecase=%u", opts->casesensitive);
+ if (opts->errors == EXFAT_ERRORS_CONT)
+ seq_puts(m, ",errors=continue");
+ else if (opts->errors == EXFAT_ERRORS_PANIC)
+ seq_puts(m, ",errors=panic");
+ else
+ seq_puts(m, ",errors=remount-ro");
+#ifdef CONFIG_EXFAT_DISCARD
+ if (opts->discard)
+ seq_puts(m, ",discard");
+#endif
+ return 0;
+}
+
+static const struct super_operations exfat_sops = {
+ .alloc_inode = exfat_alloc_inode,
+ .destroy_inode = exfat_destroy_inode,
+ .write_inode = exfat_write_inode,
+ .evict_inode = exfat_evict_inode,
+ .put_super = exfat_put_super,
+ .sync_fs = exfat_sync_fs,
+ .statfs = exfat_statfs,
+ .remount_fs = exfat_remount,
+ .show_options = exfat_show_options,
+};
+
+/*======================================================================*/
+/* Export Operations */
+/*======================================================================*/
+
+static struct inode *exfat_nfs_get_inode(struct super_block *sb, u64 ino,
+ u32 generation)
+{
+ struct inode *inode = NULL;
+
+ if (ino < EXFAT_ROOT_INO)
+ return inode;
+ inode = ilookup(sb, ino);
+
+ if (inode && generation && (inode->i_generation != generation)) {
+ iput(inode);
+ inode = NULL;
+ }
+
+ return inode;
+}
+
+static struct dentry *exfat_fh_to_dentry(struct super_block *sb,
+ struct fid *fid, int fh_len,
+ int fh_type)
+{
+ return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
+ exfat_nfs_get_inode);
+}
+
+static struct dentry *exfat_fh_to_parent(struct super_block *sb,
+ struct fid *fid, int fh_len,
+ int fh_type)
+{
+ return generic_fh_to_parent(sb, fid, fh_len, fh_type,
+ exfat_nfs_get_inode);
+}
+
+static const struct export_operations exfat_export_ops = {
+ .fh_to_dentry = exfat_fh_to_dentry,
+ .fh_to_parent = exfat_fh_to_parent,
+};
+
+/*======================================================================*/
+/* Super Block Read Operations */
+/*======================================================================*/
+
+enum {
+ Opt_uid,
+ Opt_gid,
+ Opt_umask,
+ Opt_dmask,
+ Opt_fmask,
+ Opt_allow_utime,
+ Opt_codepage,
+ Opt_charset,
+ Opt_namecase,
+ Opt_debug,
+ Opt_err_cont,
+ Opt_err_panic,
+ Opt_err_ro,
+ Opt_utf8_hack,
+ Opt_err,
+#ifdef CONFIG_EXFAT_DISCARD
+ Opt_discard,
+#endif /* EXFAT_CONFIG_DISCARD */
+};
+
+static const match_table_t exfat_tokens = {
+ {Opt_uid, "uid=%u"},
+ {Opt_gid, "gid=%u"},
+ {Opt_umask, "umask=%o"},
+ {Opt_dmask, "dmask=%o"},
+ {Opt_fmask, "fmask=%o"},
+ {Opt_allow_utime, "allow_utime=%o"},
+ {Opt_codepage, "codepage=%u"},
+ {Opt_charset, "iocharset=%s"},
+ {Opt_namecase, "namecase=%u"},
+ {Opt_debug, "debug"},
+ {Opt_err_cont, "errors=continue"},
+ {Opt_err_panic, "errors=panic"},
+ {Opt_err_ro, "errors=remount-ro"},
+ {Opt_utf8_hack, "utf8"},
+#ifdef CONFIG_EXFAT_DISCARD
+ {Opt_discard, "discard"},
+#endif /* CONFIG_EXFAT_DISCARD */
+ {Opt_err, NULL}
+};
+
+static int parse_options(char *options, int silent, int *debug,
+ struct exfat_mount_options *opts)
+{
+ char *p;
+ substring_t args[MAX_OPT_ARGS];
+ int option;
+ char *iocharset;
+
+ opts->fs_uid = current_uid();
+ opts->fs_gid = current_gid();
+ opts->fs_fmask = opts->fs_dmask = current->fs->umask;
+ opts->allow_utime = (unsigned short) -1;
+ opts->codepage = exfat_default_codepage;
+ opts->iocharset = exfat_default_iocharset;
+ opts->casesensitive = 0;
+ opts->errors = EXFAT_ERRORS_RO;
+#ifdef CONFIG_EXFAT_DISCARD
+ opts->discard = 0;
+#endif
+ *debug = 0;
+
+ if (!options)
+ goto out;
+
+ while ((p = strsep(&options, ",")) != NULL) {
+ int token;
+
+ if (!*p)
+ continue;
+
+ token = match_token(p, exfat_tokens, args);
+ switch (token) {
+ case Opt_uid:
+ if (match_int(&args[0], &option))
+ return 0;
+ opts->fs_uid = KUIDT_INIT(option);
+ break;
+ case Opt_gid:
+ if (match_int(&args[0], &option))
+ return 0;
+ opts->fs_gid = KGIDT_INIT(option);
+ break;
+ case Opt_umask:
+ case Opt_dmask:
+ case Opt_fmask:
+ if (match_octal(&args[0], &option))
+ return 0;
+ if (token != Opt_dmask)
+ opts->fs_fmask = option;
+ if (token != Opt_fmask)
+ opts->fs_dmask = option;
+ break;
+ case Opt_allow_utime:
+ if (match_octal(&args[0], &option))
+ return 0;
+ opts->allow_utime = option & 0022;
+ break;
+ case Opt_codepage:
+ if (match_int(&args[0], &option))
+ return 0;
+ opts->codepage = option;
+ break;
+ case Opt_charset:
+ if (opts->iocharset != exfat_default_iocharset)
+ kfree(opts->iocharset);
+ iocharset = match_strdup(&args[0]);
+ if (!iocharset)
+ return -ENOMEM;
+ opts->iocharset = iocharset;
+ break;
+ case Opt_namecase:
+ if (match_int(&args[0], &option))
+ return 0;
+ opts->casesensitive = option;
+ break;
+ case Opt_err_cont:
+ opts->errors = EXFAT_ERRORS_CONT;
+ break;
+ case Opt_err_panic:
+ opts->errors = EXFAT_ERRORS_PANIC;
+ break;
+ case Opt_err_ro:
+ opts->errors = EXFAT_ERRORS_RO;
+ break;
+ case Opt_debug:
+ *debug = 1;
+ break;
+#ifdef CONFIG_EXFAT_DISCARD
+ case Opt_discard:
+ opts->discard = 1;
+ break;
+#endif /* CONFIG_EXFAT_DISCARD */
+ case Opt_utf8_hack:
+ break;
+ default:
+ if (!silent)
+ pr_err("[EXFAT] Unrecognized mount option %s or missing value\n",
+ p);
+ return -EINVAL;
+ }
+ }
+
+out:
+ if (opts->allow_utime == (unsigned short) -1)
+ opts->allow_utime = ~opts->fs_dmask & 0022;
+
+ return 0;
+}
+
+static void exfat_hash_init(struct super_block *sb)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ int i;
+
+ spin_lock_init(&sbi->inode_hash_lock);
+ for (i = 0; i < EXFAT_HASH_SIZE; i++)
+ INIT_HLIST_HEAD(&sbi->inode_hashtable[i]);
+}
+
+static int exfat_read_root(struct inode *inode)
+{
+ struct super_block *sb = inode->i_sb;
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ struct fs_info_t *p_fs = &(sbi->fs_info);
+ struct dir_entry_t info;
+
+ EXFAT_I(inode)->fid.dir.dir = p_fs->root_dir;
+ EXFAT_I(inode)->fid.dir.flags = 0x01;
+ EXFAT_I(inode)->fid.entry = -1;
+ EXFAT_I(inode)->fid.start_clu = p_fs->root_dir;
+ EXFAT_I(inode)->fid.flags = 0x01;
+ EXFAT_I(inode)->fid.type = TYPE_DIR;
+ EXFAT_I(inode)->fid.rwoffset = 0;
+ EXFAT_I(inode)->fid.hint_last_off = -1;
+
+ EXFAT_I(inode)->target = NULL;
+
+ ffsReadStat(inode, &info);
+
+ inode->i_uid = sbi->options.fs_uid;
+ inode->i_gid = sbi->options.fs_gid;
+ INC_IVERSION(inode);
+ inode->i_generation = 0;
+ inode->i_mode = exfat_make_mode(sbi, ATTR_SUBDIR, 0777);
+ inode->i_op = &exfat_dir_inode_operations;
+ inode->i_fop = &exfat_dir_operations;
+
+ i_size_write(inode, info.Size);
+ inode->i_blocks = ((i_size_read(inode) + (p_fs->cluster_size - 1))
+ & ~((loff_t)p_fs->cluster_size - 1)) >> 9;
+ EXFAT_I(inode)->i_pos = ((loff_t) p_fs->root_dir << 32) | 0xffffffff;
+ EXFAT_I(inode)->mmu_private = i_size_read(inode);
+
+ exfat_save_attr(inode, ATTR_SUBDIR);
+ inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
+ set_nlink(inode, info.NumSubdirs + 2);
+
+ return 0;
+}
+
+static void setup_dops(struct super_block *sb)
+{
+ if (EXFAT_SB(sb)->options.casesensitive == 0)
+ sb->s_d_op = &exfat_ci_dentry_ops;
+ else
+ sb->s_d_op = &exfat_dentry_ops;
+}
+
+static int exfat_fill_super(struct super_block *sb, void *data, int silent)
+{
+ struct inode *root_inode = NULL;
+ struct exfat_sb_info *sbi;
+ int debug, ret;
+ long error;
+ char buf[50];
+
+ /*
+ * GFP_KERNEL is ok here, because while we do hold the
+ * supeblock lock, memory pressure can't call back into
+ * the filesystem, since we're only just about to mount
+ * it and have no inodes etc active!
+ */
+ sbi = kzalloc(sizeof(struct exfat_sb_info), GFP_KERNEL);
+ if (!sbi)
+ return -ENOMEM;
+ mutex_init(&sbi->s_lock);
+ sb->s_fs_info = sbi;
+ sb->s_flags |= SB_NODIRATIME;
+ sb->s_magic = EXFAT_SUPER_MAGIC;
+ sb->s_op = &exfat_sops;
+ sb->s_export_op = &exfat_export_ops;
+
+ error = parse_options(data, silent, &debug, &sbi->options);
+ if (error)
+ goto out_fail;
+
+ setup_dops(sb);
+
+ error = -EIO;
+ sb_min_blocksize(sb, 512);
+ sb->s_maxbytes = 0x7fffffffffffffffLL; /* maximum file size */
+
+ ret = ffsMountVol(sb);
+ if (ret) {
+ if (!silent)
+ pr_err("[EXFAT] ffsMountVol failed\n");
+
+ goto out_fail;
+ }
+
+ /* set up enough so that it can read an inode */
+ exfat_hash_init(sb);
+
+ /*
+ * The low byte of FAT's first entry must have same value with
+ * media-field. But in real world, too many devices is
+ * writing wrong value. So, removed that validity check.
+ *
+ * if (FAT_FIRST_ENT(sb, media) != first)
+ */
+
+ /* codepage is not meaningful in exfat */
+ if (sbi->fs_info.vol_type != EXFAT) {
+ error = -EINVAL;
+ sprintf(buf, "cp%d", sbi->options.codepage);
+ sbi->nls_disk = load_nls(buf);
+ if (!sbi->nls_disk) {
+ pr_err("[EXFAT] Codepage %s not found\n", buf);
+ goto out_fail2;
+ }
+ }
+
+ sbi->nls_io = load_nls(sbi->options.iocharset);
+
+ error = -ENOMEM;
+ root_inode = new_inode(sb);
+ if (!root_inode)
+ goto out_fail2;
+ root_inode->i_ino = EXFAT_ROOT_INO;
+ SET_IVERSION(root_inode, 1);
+
+ error = exfat_read_root(root_inode);
+ if (error < 0)
+ goto out_fail2;
+ error = -ENOMEM;
+ exfat_attach(root_inode, EXFAT_I(root_inode)->i_pos);
+ insert_inode_hash(root_inode);
+ sb->s_root = d_make_root(root_inode);
+ if (!sb->s_root) {
+ pr_err("[EXFAT] Getting the root inode failed\n");
+ goto out_fail2;
+ }
+
+ return 0;
+
+out_fail2:
+ ffsUmountVol(sb);
+out_fail:
+ if (root_inode)
+ iput(root_inode);
+ sb->s_fs_info = NULL;
+ exfat_free_super(sbi);
+ return error;
+}
+
+static struct dentry *exfat_fs_mount(struct file_system_type *fs_type,
+ int flags, const char *dev_name,
+ void *data)
+{
+ return mount_bdev(fs_type, flags, dev_name, data, exfat_fill_super);
+}
+
+static void init_once(void *foo)
+{
+ struct exfat_inode_info *ei = (struct exfat_inode_info *)foo;
+
+ INIT_HLIST_NODE(&ei->i_hash_fat);
+ inode_init_once(&ei->vfs_inode);
+}
+
+static int __init exfat_init_inodecache(void)
+{
+ exfat_inode_cachep = kmem_cache_create("exfat_inode_cache",
+ sizeof(struct exfat_inode_info),
+ 0,
+ (SLAB_RECLAIM_ACCOUNT |
+ SLAB_MEM_SPREAD),
+ init_once);
+ if (exfat_inode_cachep == NULL)
+ return -ENOMEM;
+ return 0;
+}
+
+static void __exit exfat_destroy_inodecache(void)
+{
+ /*
+ * Make sure all delayed rcu free inodes are flushed before we
+ * destroy cache.
+ */
+ rcu_barrier();
+ kmem_cache_destroy(exfat_inode_cachep);
+}
+
+#ifdef CONFIG_EXFAT_KERNEL_DEBUG
+static void exfat_debug_kill_sb(struct super_block *sb)
+{
+ struct exfat_sb_info *sbi = EXFAT_SB(sb);
+ struct block_device *bdev = sb->s_bdev;
+ struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
+
+ long flags;
+
+ if (sbi) {
+ flags = sbi->debug_flags;
+
+ if (flags & EXFAT_DEBUGFLAGS_INVALID_UMOUNT) {
+ /*
+ * invalidate_bdev drops all device cache include
+ * dirty. We use this to simulate device removal.
+ */
+ down(&p_fs->v_sem);
+ FAT_release_all(sb);
+ buf_release_all(sb);
+ up(&p_fs->v_sem);
+
+ invalidate_bdev(bdev);
+ }
+ }
+
+ kill_block_super(sb);
+}
+#endif /* CONFIG_EXFAT_KERNEL_DEBUG */
+
+static struct file_system_type exfat_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "exfat",
+ .mount = exfat_fs_mount,
+#ifdef CONFIG_EXFAT_KERNEL_DEBUG
+ .kill_sb = exfat_debug_kill_sb,
+#else
+ .kill_sb = kill_block_super,
+#endif /* CONFIG_EXFAT_KERNEL_DEBUG */
+ .fs_flags = FS_REQUIRES_DEV,
+};
+
+static int __init init_exfat(void)
+{
+ int err;
+
+ BUILD_BUG_ON(sizeof(struct dentry_t) != DENTRY_SIZE);
+ BUILD_BUG_ON(sizeof(struct dos_dentry_t) != DENTRY_SIZE);
+ BUILD_BUG_ON(sizeof(struct ext_dentry_t) != DENTRY_SIZE);
+ BUILD_BUG_ON(sizeof(struct file_dentry_t) != DENTRY_SIZE);
+ BUILD_BUG_ON(sizeof(struct strm_dentry_t) != DENTRY_SIZE);
+ BUILD_BUG_ON(sizeof(struct name_dentry_t) != DENTRY_SIZE);
+ BUILD_BUG_ON(sizeof(struct bmap_dentry_t) != DENTRY_SIZE);
+ BUILD_BUG_ON(sizeof(struct case_dentry_t) != DENTRY_SIZE);
+ BUILD_BUG_ON(sizeof(struct volm_dentry_t) != DENTRY_SIZE);
+
+ pr_info("exFAT: Version %s\n", EXFAT_VERSION);
+
+ err = exfat_init_inodecache();
+ if (err)
+ return err;
+
+ err = register_filesystem(&exfat_fs_type);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static void __exit exit_exfat(void)
+{
+ exfat_destroy_inodecache();
+ unregister_filesystem(&exfat_fs_type);
+}
+
+module_init(init_exfat);
+module_exit(exit_exfat);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("exFAT Filesystem Driver");
+MODULE_ALIAS_FS("exfat");
diff --git a/drivers/staging/exfat/exfat_upcase.c b/drivers/staging/exfat/exfat_upcase.c
new file mode 100644
index 0000000000..366082fb3d
--- /dev/null
+++ b/drivers/staging/exfat/exfat_upcase.c
@@ -0,0 +1,740 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
+ */
+
+#include <linux/types.h>
+#include "exfat.h"
+
+const u8 uni_upcase[NUM_UPCASE << 1] = {
+ 0x00, 0x00, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00,
+ 0x04, 0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00,
+ 0x08, 0x00, 0x09, 0x00, 0x0A, 0x00, 0x0B, 0x00,
+ 0x0C, 0x00, 0x0D, 0x00, 0x0E, 0x00, 0x0F, 0x00,
+ 0x10, 0x00, 0x11, 0x00, 0x12, 0x00, 0x13, 0x00,
+ 0x14, 0x00, 0x15, 0x00, 0x16, 0x00, 0x17, 0x00,
+ 0x18, 0x00, 0x19, 0x00, 0x1A, 0x00, 0x1B, 0x00,
+ 0x1C, 0x00, 0x1D, 0x00, 0x1E, 0x00, 0x1F, 0x00,
+ 0x20, 0x00, 0x21, 0x00, 0x22, 0x00, 0x23, 0x00,
+ 0x24, 0x00, 0x25, 0x00, 0x26, 0x00, 0x27, 0x00,
+ 0x28, 0x00, 0x29, 0x00, 0x2A, 0x00, 0x2B, 0x00,
+ 0x2C, 0x00, 0x2D, 0x00, 0x2E, 0x00, 0x2F, 0x00,
+ 0x30, 0x00, 0x31, 0x00, 0x32, 0x00, 0x33, 0x00,
+ 0x34, 0x00, 0x35, 0x00, 0x36, 0x00, 0x37, 0x00,
+ 0x38, 0x00, 0x39, 0x00, 0x3A, 0x00, 0x3B, 0x00,
+ 0x3C, 0x00, 0x3D, 0x00, 0x3E, 0x00, 0x3F, 0x00,
+ 0x40, 0x00, 0x41, 0x00, 0x42, 0x00, 0x43, 0x00,
+ 0x44, 0x00, 0x45, 0x00, 0x46, 0x00, 0x47, 0x00,
+ 0x48, 0x00, 0x49, 0x00, 0x4A, 0x00, 0x4B, 0x00,
+ 0x4C, 0x00, 0x4D, 0x00, 0x4E, 0x00, 0x4F, 0x00,
+ 0x50, 0x00, 0x51, 0x00, 0x52, 0x00, 0x53, 0x00,
+ 0x54, 0x00, 0x55, 0x00, 0x56, 0x00, 0x57, 0x00,
+ 0x58, 0x00, 0x59, 0x00, 0x5A, 0x00, 0x5B, 0x00,
+ 0x5C, 0x00, 0x5D, 0x00, 0x5E, 0x00, 0x5F, 0x00,
+ 0x60, 0x00, 0x41, 0x00, 0x42, 0x00, 0x43, 0x00,
+ 0x44, 0x00, 0x45, 0x00, 0x46, 0x00, 0x47, 0x00,
+ 0x48, 0x00, 0x49, 0x00, 0x4A, 0x00, 0x4B, 0x00,
+ 0x4C, 0x00, 0x4D, 0x00, 0x4E, 0x00, 0x4F, 0x00,
+ 0x50, 0x00, 0x51, 0x00, 0x52, 0x00, 0x53, 0x00,
+ 0x54, 0x00, 0x55, 0x00, 0x56, 0x00, 0x57, 0x00,
+ 0x58, 0x00, 0x59, 0x00, 0x5A, 0x00, 0x7B, 0x00,
+ 0x7C, 0x00, 0x7D, 0x00, 0x7E, 0x00, 0x7F, 0x00,
+ 0x80, 0x00, 0x81, 0x00, 0x82, 0x00, 0x83, 0x00,
+ 0x84, 0x00, 0x85, 0x00, 0x86, 0x00, 0x87, 0x00,
+ 0x88, 0x00, 0x89, 0x00, 0x8A, 0x00, 0x8B, 0x00,
+ 0x8C, 0x00, 0x8D, 0x00, 0x8E, 0x00, 0x8F, 0x00,
+ 0x90, 0x00, 0x91, 0x00, 0x92, 0x00, 0x93, 0x00,
+ 0x94, 0x00, 0x95, 0x00, 0x96, 0x00, 0x97, 0x00,
+ 0x98, 0x00, 0x99, 0x00, 0x9A, 0x00, 0x9B, 0x00,
+ 0x9C, 0x00, 0x9D, 0x00, 0x9E, 0x00, 0x9F, 0x00,
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+ 0xB4, 0x04, 0xB4, 0x04, 0xB6, 0x04, 0xB6, 0x04,
+ 0xB8, 0x04, 0xB8, 0x04, 0xBA, 0x04, 0xBA, 0x04,
+ 0xBC, 0x04, 0xBC, 0x04, 0xBE, 0x04, 0xBE, 0x04,
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+ 0xC3, 0x04, 0xC5, 0x04, 0xC5, 0x04, 0xC7, 0x04,
+ 0xC7, 0x04, 0xC9, 0x04, 0xC9, 0x04, 0xCB, 0x04,
+ 0xCB, 0x04, 0xCD, 0x04, 0xCD, 0x04, 0xC0, 0x04,
+ 0xD0, 0x04, 0xD0, 0x04, 0xD2, 0x04, 0xD2, 0x04,
+ 0xD4, 0x04, 0xD4, 0x04, 0xD6, 0x04, 0xD6, 0x04,
+ 0xD8, 0x04, 0xD8, 0x04, 0xDA, 0x04, 0xDA, 0x04,
+ 0xDC, 0x04, 0xDC, 0x04, 0xDE, 0x04, 0xDE, 0x04,
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+ 0xE4, 0x04, 0xE4, 0x04, 0xE6, 0x04, 0xE6, 0x04,
+ 0xE8, 0x04, 0xE8, 0x04, 0xEA, 0x04, 0xEA, 0x04,
+ 0xEC, 0x04, 0xEC, 0x04, 0xEE, 0x04, 0xEE, 0x04,
+ 0xF0, 0x04, 0xF0, 0x04, 0xF2, 0x04, 0xF2, 0x04,
+ 0xF4, 0x04, 0xF4, 0x04, 0xF6, 0x04, 0xF6, 0x04,
+ 0xF8, 0x04, 0xF8, 0x04, 0xFA, 0x04, 0xFA, 0x04,
+ 0xFC, 0x04, 0xFC, 0x04, 0xFE, 0x04, 0xFE, 0x04,
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+ 0x04, 0x05, 0x04, 0x05, 0x06, 0x05, 0x06, 0x05,
+ 0x08, 0x05, 0x08, 0x05, 0x0A, 0x05, 0x0A, 0x05,
+ 0x0C, 0x05, 0x0C, 0x05, 0x0E, 0x05, 0x0E, 0x05,
+ 0x10, 0x05, 0x10, 0x05, 0x12, 0x05, 0x12, 0x05,
+ 0x14, 0x05, 0x15, 0x05, 0x16, 0x05, 0x17, 0x05,
+ 0x18, 0x05, 0x19, 0x05, 0x1A, 0x05, 0x1B, 0x05,
+ 0x1C, 0x05, 0x1D, 0x05, 0x1E, 0x05, 0x1F, 0x05,
+ 0x20, 0x05, 0x21, 0x05, 0x22, 0x05, 0x23, 0x05,
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+ 0x2C, 0x05, 0x2D, 0x05, 0x2E, 0x05, 0x2F, 0x05,
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+ 0x38, 0x05, 0x39, 0x05, 0x3A, 0x05, 0x3B, 0x05,
+ 0x3C, 0x05, 0x3D, 0x05, 0x3E, 0x05, 0x3F, 0x05,
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+ 0x4C, 0x05, 0x4D, 0x05, 0x4E, 0x05, 0x4F, 0x05,
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+ 0x5C, 0x05, 0x5D, 0x05, 0x5E, 0x05, 0x5F, 0x05,
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+ 0x3C, 0x05, 0x3D, 0x05, 0x3E, 0x05, 0x3F, 0x05,
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+ 0x4C, 0x05, 0x4D, 0x05, 0x4E, 0x05, 0x4F, 0x05,
+ 0x50, 0x05, 0x51, 0x05, 0x52, 0x05, 0x53, 0x05,
+ 0x54, 0x05, 0x55, 0x05, 0x56, 0x05, 0xFF, 0xFF,
+ 0xF6, 0x17, 0x63, 0x2C, 0x7E, 0x1D, 0x7F, 0x1D,
+ 0x80, 0x1D, 0x81, 0x1D, 0x82, 0x1D, 0x83, 0x1D,
+ 0x84, 0x1D, 0x85, 0x1D, 0x86, 0x1D, 0x87, 0x1D,
+ 0x88, 0x1D, 0x89, 0x1D, 0x8A, 0x1D, 0x8B, 0x1D,
+ 0x8C, 0x1D, 0x8D, 0x1D, 0x8E, 0x1D, 0x8F, 0x1D,
+ 0x90, 0x1D, 0x91, 0x1D, 0x92, 0x1D, 0x93, 0x1D,
+ 0x94, 0x1D, 0x95, 0x1D, 0x96, 0x1D, 0x97, 0x1D,
+ 0x98, 0x1D, 0x99, 0x1D, 0x9A, 0x1D, 0x9B, 0x1D,
+ 0x9C, 0x1D, 0x9D, 0x1D, 0x9E, 0x1D, 0x9F, 0x1D,
+ 0xA0, 0x1D, 0xA1, 0x1D, 0xA2, 0x1D, 0xA3, 0x1D,
+ 0xA4, 0x1D, 0xA5, 0x1D, 0xA6, 0x1D, 0xA7, 0x1D,
+ 0xA8, 0x1D, 0xA9, 0x1D, 0xAA, 0x1D, 0xAB, 0x1D,
+ 0xAC, 0x1D, 0xAD, 0x1D, 0xAE, 0x1D, 0xAF, 0x1D,
+ 0xB0, 0x1D, 0xB1, 0x1D, 0xB2, 0x1D, 0xB3, 0x1D,
+ 0xB4, 0x1D, 0xB5, 0x1D, 0xB6, 0x1D, 0xB7, 0x1D,
+ 0xB8, 0x1D, 0xB9, 0x1D, 0xBA, 0x1D, 0xBB, 0x1D,
+ 0xBC, 0x1D, 0xBD, 0x1D, 0xBE, 0x1D, 0xBF, 0x1D,
+ 0xC0, 0x1D, 0xC1, 0x1D, 0xC2, 0x1D, 0xC3, 0x1D,
+ 0xC4, 0x1D, 0xC5, 0x1D, 0xC6, 0x1D, 0xC7, 0x1D,
+ 0xC8, 0x1D, 0xC9, 0x1D, 0xCA, 0x1D, 0xCB, 0x1D,
+ 0xCC, 0x1D, 0xCD, 0x1D, 0xCE, 0x1D, 0xCF, 0x1D,
+ 0xD0, 0x1D, 0xD1, 0x1D, 0xD2, 0x1D, 0xD3, 0x1D,
+ 0xD4, 0x1D, 0xD5, 0x1D, 0xD6, 0x1D, 0xD7, 0x1D,
+ 0xD8, 0x1D, 0xD9, 0x1D, 0xDA, 0x1D, 0xDB, 0x1D,
+ 0xDC, 0x1D, 0xDD, 0x1D, 0xDE, 0x1D, 0xDF, 0x1D,
+ 0xE0, 0x1D, 0xE1, 0x1D, 0xE2, 0x1D, 0xE3, 0x1D,
+ 0xE4, 0x1D, 0xE5, 0x1D, 0xE6, 0x1D, 0xE7, 0x1D,
+ 0xE8, 0x1D, 0xE9, 0x1D, 0xEA, 0x1D, 0xEB, 0x1D,
+ 0xEC, 0x1D, 0xED, 0x1D, 0xEE, 0x1D, 0xEF, 0x1D,
+ 0xF0, 0x1D, 0xF1, 0x1D, 0xF2, 0x1D, 0xF3, 0x1D,
+ 0xF4, 0x1D, 0xF5, 0x1D, 0xF6, 0x1D, 0xF7, 0x1D,
+ 0xF8, 0x1D, 0xF9, 0x1D, 0xFA, 0x1D, 0xFB, 0x1D,
+ 0xFC, 0x1D, 0xFD, 0x1D, 0xFE, 0x1D, 0xFF, 0x1D,
+ 0x00, 0x1E, 0x00, 0x1E, 0x02, 0x1E, 0x02, 0x1E,
+ 0x04, 0x1E, 0x04, 0x1E, 0x06, 0x1E, 0x06, 0x1E,
+ 0x08, 0x1E, 0x08, 0x1E, 0x0A, 0x1E, 0x0A, 0x1E,
+ 0x0C, 0x1E, 0x0C, 0x1E, 0x0E, 0x1E, 0x0E, 0x1E,
+ 0x10, 0x1E, 0x10, 0x1E, 0x12, 0x1E, 0x12, 0x1E,
+ 0x14, 0x1E, 0x14, 0x1E, 0x16, 0x1E, 0x16, 0x1E,
+ 0x18, 0x1E, 0x18, 0x1E, 0x1A, 0x1E, 0x1A, 0x1E,
+ 0x1C, 0x1E, 0x1C, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E,
+ 0x20, 0x1E, 0x20, 0x1E, 0x22, 0x1E, 0x22, 0x1E,
+ 0x24, 0x1E, 0x24, 0x1E, 0x26, 0x1E, 0x26, 0x1E,
+ 0x28, 0x1E, 0x28, 0x1E, 0x2A, 0x1E, 0x2A, 0x1E,
+ 0x2C, 0x1E, 0x2C, 0x1E, 0x2E, 0x1E, 0x2E, 0x1E,
+ 0x30, 0x1E, 0x30, 0x1E, 0x32, 0x1E, 0x32, 0x1E,
+ 0x34, 0x1E, 0x34, 0x1E, 0x36, 0x1E, 0x36, 0x1E,
+ 0x38, 0x1E, 0x38, 0x1E, 0x3A, 0x1E, 0x3A, 0x1E,
+ 0x3C, 0x1E, 0x3C, 0x1E, 0x3E, 0x1E, 0x3E, 0x1E,
+ 0x40, 0x1E, 0x40, 0x1E, 0x42, 0x1E, 0x42, 0x1E,
+ 0x44, 0x1E, 0x44, 0x1E, 0x46, 0x1E, 0x46, 0x1E,
+ 0x48, 0x1E, 0x48, 0x1E, 0x4A, 0x1E, 0x4A, 0x1E,
+ 0x4C, 0x1E, 0x4C, 0x1E, 0x4E, 0x1E, 0x4E, 0x1E,
+ 0x50, 0x1E, 0x50, 0x1E, 0x52, 0x1E, 0x52, 0x1E,
+ 0x54, 0x1E, 0x54, 0x1E, 0x56, 0x1E, 0x56, 0x1E,
+ 0x58, 0x1E, 0x58, 0x1E, 0x5A, 0x1E, 0x5A, 0x1E,
+ 0x5C, 0x1E, 0x5C, 0x1E, 0x5E, 0x1E, 0x5E, 0x1E,
+ 0x60, 0x1E, 0x60, 0x1E, 0x62, 0x1E, 0x62, 0x1E,
+ 0x64, 0x1E, 0x64, 0x1E, 0x66, 0x1E, 0x66, 0x1E,
+ 0x68, 0x1E, 0x68, 0x1E, 0x6A, 0x1E, 0x6A, 0x1E,
+ 0x6C, 0x1E, 0x6C, 0x1E, 0x6E, 0x1E, 0x6E, 0x1E,
+ 0x70, 0x1E, 0x70, 0x1E, 0x72, 0x1E, 0x72, 0x1E,
+ 0x74, 0x1E, 0x74, 0x1E, 0x76, 0x1E, 0x76, 0x1E,
+ 0x78, 0x1E, 0x78, 0x1E, 0x7A, 0x1E, 0x7A, 0x1E,
+ 0x7C, 0x1E, 0x7C, 0x1E, 0x7E, 0x1E, 0x7E, 0x1E,
+ 0x80, 0x1E, 0x80, 0x1E, 0x82, 0x1E, 0x82, 0x1E,
+ 0x84, 0x1E, 0x84, 0x1E, 0x86, 0x1E, 0x86, 0x1E,
+ 0x88, 0x1E, 0x88, 0x1E, 0x8A, 0x1E, 0x8A, 0x1E,
+ 0x8C, 0x1E, 0x8C, 0x1E, 0x8E, 0x1E, 0x8E, 0x1E,
+ 0x90, 0x1E, 0x90, 0x1E, 0x92, 0x1E, 0x92, 0x1E,
+ 0x94, 0x1E, 0x94, 0x1E, 0x96, 0x1E, 0x97, 0x1E,
+ 0x98, 0x1E, 0x99, 0x1E, 0x9A, 0x1E, 0x9B, 0x1E,
+ 0x9C, 0x1E, 0x9D, 0x1E, 0x9E, 0x1E, 0x9F, 0x1E,
+ 0xA0, 0x1E, 0xA0, 0x1E, 0xA2, 0x1E, 0xA2, 0x1E,
+ 0xA4, 0x1E, 0xA4, 0x1E, 0xA6, 0x1E, 0xA6, 0x1E,
+ 0xA8, 0x1E, 0xA8, 0x1E, 0xAA, 0x1E, 0xAA, 0x1E,
+ 0xAC, 0x1E, 0xAC, 0x1E, 0xAE, 0x1E, 0xAE, 0x1E,
+ 0xB0, 0x1E, 0xB0, 0x1E, 0xB2, 0x1E, 0xB2, 0x1E,
+ 0xB4, 0x1E, 0xB4, 0x1E, 0xB6, 0x1E, 0xB6, 0x1E,
+ 0xB8, 0x1E, 0xB8, 0x1E, 0xBA, 0x1E, 0xBA, 0x1E,
+ 0xBC, 0x1E, 0xBC, 0x1E, 0xBE, 0x1E, 0xBE, 0x1E,
+ 0xC0, 0x1E, 0xC0, 0x1E, 0xC2, 0x1E, 0xC2, 0x1E,
+ 0xC4, 0x1E, 0xC4, 0x1E, 0xC6, 0x1E, 0xC6, 0x1E,
+ 0xC8, 0x1E, 0xC8, 0x1E, 0xCA, 0x1E, 0xCA, 0x1E,
+ 0xCC, 0x1E, 0xCC, 0x1E, 0xCE, 0x1E, 0xCE, 0x1E,
+ 0xD0, 0x1E, 0xD0, 0x1E, 0xD2, 0x1E, 0xD2, 0x1E,
+ 0xD4, 0x1E, 0xD4, 0x1E, 0xD6, 0x1E, 0xD6, 0x1E,
+ 0xD8, 0x1E, 0xD8, 0x1E, 0xDA, 0x1E, 0xDA, 0x1E,
+ 0xDC, 0x1E, 0xDC, 0x1E, 0xDE, 0x1E, 0xDE, 0x1E,
+ 0xE0, 0x1E, 0xE0, 0x1E, 0xE2, 0x1E, 0xE2, 0x1E,
+ 0xE4, 0x1E, 0xE4, 0x1E, 0xE6, 0x1E, 0xE6, 0x1E,
+ 0xE8, 0x1E, 0xE8, 0x1E, 0xEA, 0x1E, 0xEA, 0x1E,
+ 0xEC, 0x1E, 0xEC, 0x1E, 0xEE, 0x1E, 0xEE, 0x1E,
+ 0xF0, 0x1E, 0xF0, 0x1E, 0xF2, 0x1E, 0xF2, 0x1E,
+ 0xF4, 0x1E, 0xF4, 0x1E, 0xF6, 0x1E, 0xF6, 0x1E,
+ 0xF8, 0x1E, 0xF8, 0x1E, 0xFA, 0x1E, 0xFB, 0x1E,
+ 0xFC, 0x1E, 0xFD, 0x1E, 0xFE, 0x1E, 0xFF, 0x1E,
+ 0x08, 0x1F, 0x09, 0x1F, 0x0A, 0x1F, 0x0B, 0x1F,
+ 0x0C, 0x1F, 0x0D, 0x1F, 0x0E, 0x1F, 0x0F, 0x1F,
+ 0x08, 0x1F, 0x09, 0x1F, 0x0A, 0x1F, 0x0B, 0x1F,
+ 0x0C, 0x1F, 0x0D, 0x1F, 0x0E, 0x1F, 0x0F, 0x1F,
+ 0x18, 0x1F, 0x19, 0x1F, 0x1A, 0x1F, 0x1B, 0x1F,
+ 0x1C, 0x1F, 0x1D, 0x1F, 0x16, 0x1F, 0x17, 0x1F,
+ 0x18, 0x1F, 0x19, 0x1F, 0x1A, 0x1F, 0x1B, 0x1F,
+ 0x1C, 0x1F, 0x1D, 0x1F, 0x1E, 0x1F, 0x1F, 0x1F,
+ 0x28, 0x1F, 0x29, 0x1F, 0x2A, 0x1F, 0x2B, 0x1F,
+ 0x2C, 0x1F, 0x2D, 0x1F, 0x2E, 0x1F, 0x2F, 0x1F,
+ 0x28, 0x1F, 0x29, 0x1F, 0x2A, 0x1F, 0x2B, 0x1F,
+ 0x2C, 0x1F, 0x2D, 0x1F, 0x2E, 0x1F, 0x2F, 0x1F,
+ 0x38, 0x1F, 0x39, 0x1F, 0x3A, 0x1F, 0x3B, 0x1F,
+ 0x3C, 0x1F, 0x3D, 0x1F, 0x3E, 0x1F, 0x3F, 0x1F,
+ 0x38, 0x1F, 0x39, 0x1F, 0x3A, 0x1F, 0x3B, 0x1F,
+ 0x3C, 0x1F, 0x3D, 0x1F, 0x3E, 0x1F, 0x3F, 0x1F,
+ 0x48, 0x1F, 0x49, 0x1F, 0x4A, 0x1F, 0x4B, 0x1F,
+ 0x4C, 0x1F, 0x4D, 0x1F, 0x46, 0x1F, 0x47, 0x1F,
+ 0x48, 0x1F, 0x49, 0x1F, 0x4A, 0x1F, 0x4B, 0x1F,
+ 0x4C, 0x1F, 0x4D, 0x1F, 0x4E, 0x1F, 0x4F, 0x1F,
+ 0x50, 0x1F, 0x59, 0x1F, 0x52, 0x1F, 0x5B, 0x1F,
+ 0x54, 0x1F, 0x5D, 0x1F, 0x56, 0x1F, 0x5F, 0x1F,
+ 0x58, 0x1F, 0x59, 0x1F, 0x5A, 0x1F, 0x5B, 0x1F,
+ 0x5C, 0x1F, 0x5D, 0x1F, 0x5E, 0x1F, 0x5F, 0x1F,
+ 0x68, 0x1F, 0x69, 0x1F, 0x6A, 0x1F, 0x6B, 0x1F,
+ 0x6C, 0x1F, 0x6D, 0x1F, 0x6E, 0x1F, 0x6F, 0x1F,
+ 0x68, 0x1F, 0x69, 0x1F, 0x6A, 0x1F, 0x6B, 0x1F,
+ 0x6C, 0x1F, 0x6D, 0x1F, 0x6E, 0x1F, 0x6F, 0x1F,
+ 0xBA, 0x1F, 0xBB, 0x1F, 0xC8, 0x1F, 0xC9, 0x1F,
+ 0xCA, 0x1F, 0xCB, 0x1F, 0xDA, 0x1F, 0xDB, 0x1F,
+ 0xF8, 0x1F, 0xF9, 0x1F, 0xEA, 0x1F, 0xEB, 0x1F,
+ 0xFA, 0x1F, 0xFB, 0x1F, 0x7E, 0x1F, 0x7F, 0x1F,
+ 0x88, 0x1F, 0x89, 0x1F, 0x8A, 0x1F, 0x8B, 0x1F,
+ 0x8C, 0x1F, 0x8D, 0x1F, 0x8E, 0x1F, 0x8F, 0x1F,
+ 0x88, 0x1F, 0x89, 0x1F, 0x8A, 0x1F, 0x8B, 0x1F,
+ 0x8C, 0x1F, 0x8D, 0x1F, 0x8E, 0x1F, 0x8F, 0x1F,
+ 0x98, 0x1F, 0x99, 0x1F, 0x9A, 0x1F, 0x9B, 0x1F,
+ 0x9C, 0x1F, 0x9D, 0x1F, 0x9E, 0x1F, 0x9F, 0x1F,
+ 0x98, 0x1F, 0x99, 0x1F, 0x9A, 0x1F, 0x9B, 0x1F,
+ 0x9C, 0x1F, 0x9D, 0x1F, 0x9E, 0x1F, 0x9F, 0x1F,
+ 0xA8, 0x1F, 0xA9, 0x1F, 0xAA, 0x1F, 0xAB, 0x1F,
+ 0xAC, 0x1F, 0xAD, 0x1F, 0xAE, 0x1F, 0xAF, 0x1F,
+ 0xA8, 0x1F, 0xA9, 0x1F, 0xAA, 0x1F, 0xAB, 0x1F,
+ 0xAC, 0x1F, 0xAD, 0x1F, 0xAE, 0x1F, 0xAF, 0x1F,
+ 0xB8, 0x1F, 0xB9, 0x1F, 0xB2, 0x1F, 0xBC, 0x1F,
+ 0xB4, 0x1F, 0xB5, 0x1F, 0xB6, 0x1F, 0xB7, 0x1F,
+ 0xB8, 0x1F, 0xB9, 0x1F, 0xBA, 0x1F, 0xBB, 0x1F,
+ 0xBC, 0x1F, 0xBD, 0x1F, 0xBE, 0x1F, 0xBF, 0x1F,
+ 0xC0, 0x1F, 0xC1, 0x1F, 0xC2, 0x1F, 0xC3, 0x1F,
+ 0xC4, 0x1F, 0xC5, 0x1F, 0xC6, 0x1F, 0xC7, 0x1F,
+ 0xC8, 0x1F, 0xC9, 0x1F, 0xCA, 0x1F, 0xCB, 0x1F,
+ 0xC3, 0x1F, 0xCD, 0x1F, 0xCE, 0x1F, 0xCF, 0x1F,
+ 0xD8, 0x1F, 0xD9, 0x1F, 0xD2, 0x1F, 0xD3, 0x1F,
+ 0xD4, 0x1F, 0xD5, 0x1F, 0xD6, 0x1F, 0xD7, 0x1F,
+ 0xD8, 0x1F, 0xD9, 0x1F, 0xDA, 0x1F, 0xDB, 0x1F,
+ 0xDC, 0x1F, 0xDD, 0x1F, 0xDE, 0x1F, 0xDF, 0x1F,
+ 0xE8, 0x1F, 0xE9, 0x1F, 0xE2, 0x1F, 0xE3, 0x1F,
+ 0xE4, 0x1F, 0xEC, 0x1F, 0xE6, 0x1F, 0xE7, 0x1F,
+ 0xE8, 0x1F, 0xE9, 0x1F, 0xEA, 0x1F, 0xEB, 0x1F,
+ 0xEC, 0x1F, 0xED, 0x1F, 0xEE, 0x1F, 0xEF, 0x1F,
+ 0xF0, 0x1F, 0xF1, 0x1F, 0xF2, 0x1F, 0xF3, 0x1F,
+ 0xF4, 0x1F, 0xF5, 0x1F, 0xF6, 0x1F, 0xF7, 0x1F,
+ 0xF8, 0x1F, 0xF9, 0x1F, 0xFA, 0x1F, 0xFB, 0x1F,
+ 0xF3, 0x1F, 0xFD, 0x1F, 0xFE, 0x1F, 0xFF, 0x1F,
+ 0x00, 0x20, 0x01, 0x20, 0x02, 0x20, 0x03, 0x20,
+ 0x04, 0x20, 0x05, 0x20, 0x06, 0x20, 0x07, 0x20,
+ 0x08, 0x20, 0x09, 0x20, 0x0A, 0x20, 0x0B, 0x20,
+ 0x0C, 0x20, 0x0D, 0x20, 0x0E, 0x20, 0x0F, 0x20,
+ 0x10, 0x20, 0x11, 0x20, 0x12, 0x20, 0x13, 0x20,
+ 0x14, 0x20, 0x15, 0x20, 0x16, 0x20, 0x17, 0x20,
+ 0x18, 0x20, 0x19, 0x20, 0x1A, 0x20, 0x1B, 0x20,
+ 0x1C, 0x20, 0x1D, 0x20, 0x1E, 0x20, 0x1F, 0x20,
+ 0x20, 0x20, 0x21, 0x20, 0x22, 0x20, 0x23, 0x20,
+ 0x24, 0x20, 0x25, 0x20, 0x26, 0x20, 0x27, 0x20,
+ 0x28, 0x20, 0x29, 0x20, 0x2A, 0x20, 0x2B, 0x20,
+ 0x2C, 0x20, 0x2D, 0x20, 0x2E, 0x20, 0x2F, 0x20,
+ 0x30, 0x20, 0x31, 0x20, 0x32, 0x20, 0x33, 0x20,
+ 0x34, 0x20, 0x35, 0x20, 0x36, 0x20, 0x37, 0x20,
+ 0x38, 0x20, 0x39, 0x20, 0x3A, 0x20, 0x3B, 0x20,
+ 0x3C, 0x20, 0x3D, 0x20, 0x3E, 0x20, 0x3F, 0x20,
+ 0x40, 0x20, 0x41, 0x20, 0x42, 0x20, 0x43, 0x20,
+ 0x44, 0x20, 0x45, 0x20, 0x46, 0x20, 0x47, 0x20,
+ 0x48, 0x20, 0x49, 0x20, 0x4A, 0x20, 0x4B, 0x20,
+ 0x4C, 0x20, 0x4D, 0x20, 0x4E, 0x20, 0x4F, 0x20,
+ 0x50, 0x20, 0x51, 0x20, 0x52, 0x20, 0x53, 0x20,
+ 0x54, 0x20, 0x55, 0x20, 0x56, 0x20, 0x57, 0x20,
+ 0x58, 0x20, 0x59, 0x20, 0x5A, 0x20, 0x5B, 0x20,
+ 0x5C, 0x20, 0x5D, 0x20, 0x5E, 0x20, 0x5F, 0x20,
+ 0x60, 0x20, 0x61, 0x20, 0x62, 0x20, 0x63, 0x20,
+ 0x64, 0x20, 0x65, 0x20, 0x66, 0x20, 0x67, 0x20,
+ 0x68, 0x20, 0x69, 0x20, 0x6A, 0x20, 0x6B, 0x20,
+ 0x6C, 0x20, 0x6D, 0x20, 0x6E, 0x20, 0x6F, 0x20,
+ 0x70, 0x20, 0x71, 0x20, 0x72, 0x20, 0x73, 0x20,
+ 0x74, 0x20, 0x75, 0x20, 0x76, 0x20, 0x77, 0x20,
+ 0x78, 0x20, 0x79, 0x20, 0x7A, 0x20, 0x7B, 0x20,
+ 0x7C, 0x20, 0x7D, 0x20, 0x7E, 0x20, 0x7F, 0x20,
+ 0x80, 0x20, 0x81, 0x20, 0x82, 0x20, 0x83, 0x20,
+ 0x84, 0x20, 0x85, 0x20, 0x86, 0x20, 0x87, 0x20,
+ 0x88, 0x20, 0x89, 0x20, 0x8A, 0x20, 0x8B, 0x20,
+ 0x8C, 0x20, 0x8D, 0x20, 0x8E, 0x20, 0x8F, 0x20,
+ 0x90, 0x20, 0x91, 0x20, 0x92, 0x20, 0x93, 0x20,
+ 0x94, 0x20, 0x95, 0x20, 0x96, 0x20, 0x97, 0x20,
+ 0x98, 0x20, 0x99, 0x20, 0x9A, 0x20, 0x9B, 0x20,
+ 0x9C, 0x20, 0x9D, 0x20, 0x9E, 0x20, 0x9F, 0x20,
+ 0xA0, 0x20, 0xA1, 0x20, 0xA2, 0x20, 0xA3, 0x20,
+ 0xA4, 0x20, 0xA5, 0x20, 0xA6, 0x20, 0xA7, 0x20,
+ 0xA8, 0x20, 0xA9, 0x20, 0xAA, 0x20, 0xAB, 0x20,
+ 0xAC, 0x20, 0xAD, 0x20, 0xAE, 0x20, 0xAF, 0x20,
+ 0xB0, 0x20, 0xB1, 0x20, 0xB2, 0x20, 0xB3, 0x20,
+ 0xB4, 0x20, 0xB5, 0x20, 0xB6, 0x20, 0xB7, 0x20,
+ 0xB8, 0x20, 0xB9, 0x20, 0xBA, 0x20, 0xBB, 0x20,
+ 0xBC, 0x20, 0xBD, 0x20, 0xBE, 0x20, 0xBF, 0x20,
+ 0xC0, 0x20, 0xC1, 0x20, 0xC2, 0x20, 0xC3, 0x20,
+ 0xC4, 0x20, 0xC5, 0x20, 0xC6, 0x20, 0xC7, 0x20,
+ 0xC8, 0x20, 0xC9, 0x20, 0xCA, 0x20, 0xCB, 0x20,
+ 0xCC, 0x20, 0xCD, 0x20, 0xCE, 0x20, 0xCF, 0x20,
+ 0xD0, 0x20, 0xD1, 0x20, 0xD2, 0x20, 0xD3, 0x20,
+ 0xD4, 0x20, 0xD5, 0x20, 0xD6, 0x20, 0xD7, 0x20,
+ 0xD8, 0x20, 0xD9, 0x20, 0xDA, 0x20, 0xDB, 0x20,
+ 0xDC, 0x20, 0xDD, 0x20, 0xDE, 0x20, 0xDF, 0x20,
+ 0xE0, 0x20, 0xE1, 0x20, 0xE2, 0x20, 0xE3, 0x20,
+ 0xE4, 0x20, 0xE5, 0x20, 0xE6, 0x20, 0xE7, 0x20,
+ 0xE8, 0x20, 0xE9, 0x20, 0xEA, 0x20, 0xEB, 0x20,
+ 0xEC, 0x20, 0xED, 0x20, 0xEE, 0x20, 0xEF, 0x20,
+ 0xF0, 0x20, 0xF1, 0x20, 0xF2, 0x20, 0xF3, 0x20,
+ 0xF4, 0x20, 0xF5, 0x20, 0xF6, 0x20, 0xF7, 0x20,
+ 0xF8, 0x20, 0xF9, 0x20, 0xFA, 0x20, 0xFB, 0x20,
+ 0xFC, 0x20, 0xFD, 0x20, 0xFE, 0x20, 0xFF, 0x20,
+ 0x00, 0x21, 0x01, 0x21, 0x02, 0x21, 0x03, 0x21,
+ 0x04, 0x21, 0x05, 0x21, 0x06, 0x21, 0x07, 0x21,
+ 0x08, 0x21, 0x09, 0x21, 0x0A, 0x21, 0x0B, 0x21,
+ 0x0C, 0x21, 0x0D, 0x21, 0x0E, 0x21, 0x0F, 0x21,
+ 0x10, 0x21, 0x11, 0x21, 0x12, 0x21, 0x13, 0x21,
+ 0x14, 0x21, 0x15, 0x21, 0x16, 0x21, 0x17, 0x21,
+ 0x18, 0x21, 0x19, 0x21, 0x1A, 0x21, 0x1B, 0x21,
+ 0x1C, 0x21, 0x1D, 0x21, 0x1E, 0x21, 0x1F, 0x21,
+ 0x20, 0x21, 0x21, 0x21, 0x22, 0x21, 0x23, 0x21,
+ 0x24, 0x21, 0x25, 0x21, 0x26, 0x21, 0x27, 0x21,
+ 0x28, 0x21, 0x29, 0x21, 0x2A, 0x21, 0x2B, 0x21,
+ 0x2C, 0x21, 0x2D, 0x21, 0x2E, 0x21, 0x2F, 0x21,
+ 0x30, 0x21, 0x31, 0x21, 0x32, 0x21, 0x33, 0x21,
+ 0x34, 0x21, 0x35, 0x21, 0x36, 0x21, 0x37, 0x21,
+ 0x38, 0x21, 0x39, 0x21, 0x3A, 0x21, 0x3B, 0x21,
+ 0x3C, 0x21, 0x3D, 0x21, 0x3E, 0x21, 0x3F, 0x21,
+ 0x40, 0x21, 0x41, 0x21, 0x42, 0x21, 0x43, 0x21,
+ 0x44, 0x21, 0x45, 0x21, 0x46, 0x21, 0x47, 0x21,
+ 0x48, 0x21, 0x49, 0x21, 0x4A, 0x21, 0x4B, 0x21,
+ 0x4C, 0x21, 0x4D, 0x21, 0x32, 0x21, 0x4F, 0x21,
+ 0x50, 0x21, 0x51, 0x21, 0x52, 0x21, 0x53, 0x21,
+ 0x54, 0x21, 0x55, 0x21, 0x56, 0x21, 0x57, 0x21,
+ 0x58, 0x21, 0x59, 0x21, 0x5A, 0x21, 0x5B, 0x21,
+ 0x5C, 0x21, 0x5D, 0x21, 0x5E, 0x21, 0x5F, 0x21,
+ 0x60, 0x21, 0x61, 0x21, 0x62, 0x21, 0x63, 0x21,
+ 0x64, 0x21, 0x65, 0x21, 0x66, 0x21, 0x67, 0x21,
+ 0x68, 0x21, 0x69, 0x21, 0x6A, 0x21, 0x6B, 0x21,
+ 0x6C, 0x21, 0x6D, 0x21, 0x6E, 0x21, 0x6F, 0x21,
+ 0x60, 0x21, 0x61, 0x21, 0x62, 0x21, 0x63, 0x21,
+ 0x64, 0x21, 0x65, 0x21, 0x66, 0x21, 0x67, 0x21,
+ 0x68, 0x21, 0x69, 0x21, 0x6A, 0x21, 0x6B, 0x21,
+ 0x6C, 0x21, 0x6D, 0x21, 0x6E, 0x21, 0x6F, 0x21,
+ 0x80, 0x21, 0x81, 0x21, 0x82, 0x21, 0x83, 0x21,
+ 0x83, 0x21, 0xFF, 0xFF, 0x4B, 0x03, 0xB6, 0x24,
+ 0xB7, 0x24, 0xB8, 0x24, 0xB9, 0x24, 0xBA, 0x24,
+ 0xBB, 0x24, 0xBC, 0x24, 0xBD, 0x24, 0xBE, 0x24,
+ 0xBF, 0x24, 0xC0, 0x24, 0xC1, 0x24, 0xC2, 0x24,
+ 0xC3, 0x24, 0xC4, 0x24, 0xC5, 0x24, 0xC6, 0x24,
+ 0xC7, 0x24, 0xC8, 0x24, 0xC9, 0x24, 0xCA, 0x24,
+ 0xCB, 0x24, 0xCC, 0x24, 0xCD, 0x24, 0xCE, 0x24,
+ 0xCF, 0x24, 0xFF, 0xFF, 0x46, 0x07, 0x00, 0x2C,
+ 0x01, 0x2C, 0x02, 0x2C, 0x03, 0x2C, 0x04, 0x2C,
+ 0x05, 0x2C, 0x06, 0x2C, 0x07, 0x2C, 0x08, 0x2C,
+ 0x09, 0x2C, 0x0A, 0x2C, 0x0B, 0x2C, 0x0C, 0x2C,
+ 0x0D, 0x2C, 0x0E, 0x2C, 0x0F, 0x2C, 0x10, 0x2C,
+ 0x11, 0x2C, 0x12, 0x2C, 0x13, 0x2C, 0x14, 0x2C,
+ 0x15, 0x2C, 0x16, 0x2C, 0x17, 0x2C, 0x18, 0x2C,
+ 0x19, 0x2C, 0x1A, 0x2C, 0x1B, 0x2C, 0x1C, 0x2C,
+ 0x1D, 0x2C, 0x1E, 0x2C, 0x1F, 0x2C, 0x20, 0x2C,
+ 0x21, 0x2C, 0x22, 0x2C, 0x23, 0x2C, 0x24, 0x2C,
+ 0x25, 0x2C, 0x26, 0x2C, 0x27, 0x2C, 0x28, 0x2C,
+ 0x29, 0x2C, 0x2A, 0x2C, 0x2B, 0x2C, 0x2C, 0x2C,
+ 0x2D, 0x2C, 0x2E, 0x2C, 0x5F, 0x2C, 0x60, 0x2C,
+ 0x60, 0x2C, 0x62, 0x2C, 0x63, 0x2C, 0x64, 0x2C,
+ 0x65, 0x2C, 0x66, 0x2C, 0x67, 0x2C, 0x67, 0x2C,
+ 0x69, 0x2C, 0x69, 0x2C, 0x6B, 0x2C, 0x6B, 0x2C,
+ 0x6D, 0x2C, 0x6E, 0x2C, 0x6F, 0x2C, 0x70, 0x2C,
+ 0x71, 0x2C, 0x72, 0x2C, 0x73, 0x2C, 0x74, 0x2C,
+ 0x75, 0x2C, 0x75, 0x2C, 0x77, 0x2C, 0x78, 0x2C,
+ 0x79, 0x2C, 0x7A, 0x2C, 0x7B, 0x2C, 0x7C, 0x2C,
+ 0x7D, 0x2C, 0x7E, 0x2C, 0x7F, 0x2C, 0x80, 0x2C,
+ 0x80, 0x2C, 0x82, 0x2C, 0x82, 0x2C, 0x84, 0x2C,
+ 0x84, 0x2C, 0x86, 0x2C, 0x86, 0x2C, 0x88, 0x2C,
+ 0x88, 0x2C, 0x8A, 0x2C, 0x8A, 0x2C, 0x8C, 0x2C,
+ 0x8C, 0x2C, 0x8E, 0x2C, 0x8E, 0x2C, 0x90, 0x2C,
+ 0x90, 0x2C, 0x92, 0x2C, 0x92, 0x2C, 0x94, 0x2C,
+ 0x94, 0x2C, 0x96, 0x2C, 0x96, 0x2C, 0x98, 0x2C,
+ 0x98, 0x2C, 0x9A, 0x2C, 0x9A, 0x2C, 0x9C, 0x2C,
+ 0x9C, 0x2C, 0x9E, 0x2C, 0x9E, 0x2C, 0xA0, 0x2C,
+ 0xA0, 0x2C, 0xA2, 0x2C, 0xA2, 0x2C, 0xA4, 0x2C,
+ 0xA4, 0x2C, 0xA6, 0x2C, 0xA6, 0x2C, 0xA8, 0x2C,
+ 0xA8, 0x2C, 0xAA, 0x2C, 0xAA, 0x2C, 0xAC, 0x2C,
+ 0xAC, 0x2C, 0xAE, 0x2C, 0xAE, 0x2C, 0xB0, 0x2C,
+ 0xB0, 0x2C, 0xB2, 0x2C, 0xB2, 0x2C, 0xB4, 0x2C,
+ 0xB4, 0x2C, 0xB6, 0x2C, 0xB6, 0x2C, 0xB8, 0x2C,
+ 0xB8, 0x2C, 0xBA, 0x2C, 0xBA, 0x2C, 0xBC, 0x2C,
+ 0xBC, 0x2C, 0xBE, 0x2C, 0xBE, 0x2C, 0xC0, 0x2C,
+ 0xC0, 0x2C, 0xC2, 0x2C, 0xC2, 0x2C, 0xC4, 0x2C,
+ 0xC4, 0x2C, 0xC6, 0x2C, 0xC6, 0x2C, 0xC8, 0x2C,
+ 0xC8, 0x2C, 0xCA, 0x2C, 0xCA, 0x2C, 0xCC, 0x2C,
+ 0xCC, 0x2C, 0xCE, 0x2C, 0xCE, 0x2C, 0xD0, 0x2C,
+ 0xD0, 0x2C, 0xD2, 0x2C, 0xD2, 0x2C, 0xD4, 0x2C,
+ 0xD4, 0x2C, 0xD6, 0x2C, 0xD6, 0x2C, 0xD8, 0x2C,
+ 0xD8, 0x2C, 0xDA, 0x2C, 0xDA, 0x2C, 0xDC, 0x2C,
+ 0xDC, 0x2C, 0xDE, 0x2C, 0xDE, 0x2C, 0xE0, 0x2C,
+ 0xE0, 0x2C, 0xE2, 0x2C, 0xE2, 0x2C, 0xE4, 0x2C,
+ 0xE5, 0x2C, 0xE6, 0x2C, 0xE7, 0x2C, 0xE8, 0x2C,
+ 0xE9, 0x2C, 0xEA, 0x2C, 0xEB, 0x2C, 0xEC, 0x2C,
+ 0xED, 0x2C, 0xEE, 0x2C, 0xEF, 0x2C, 0xF0, 0x2C,
+ 0xF1, 0x2C, 0xF2, 0x2C, 0xF3, 0x2C, 0xF4, 0x2C,
+ 0xF5, 0x2C, 0xF6, 0x2C, 0xF7, 0x2C, 0xF8, 0x2C,
+ 0xF9, 0x2C, 0xFA, 0x2C, 0xFB, 0x2C, 0xFC, 0x2C,
+ 0xFD, 0x2C, 0xFE, 0x2C, 0xFF, 0x2C, 0xA0, 0x10,
+ 0xA1, 0x10, 0xA2, 0x10, 0xA3, 0x10, 0xA4, 0x10,
+ 0xA5, 0x10, 0xA6, 0x10, 0xA7, 0x10, 0xA8, 0x10,
+ 0xA9, 0x10, 0xAA, 0x10, 0xAB, 0x10, 0xAC, 0x10,
+ 0xAD, 0x10, 0xAE, 0x10, 0xAF, 0x10, 0xB0, 0x10,
+ 0xB1, 0x10, 0xB2, 0x10, 0xB3, 0x10, 0xB4, 0x10,
+ 0xB5, 0x10, 0xB6, 0x10, 0xB7, 0x10, 0xB8, 0x10,
+ 0xB9, 0x10, 0xBA, 0x10, 0xBB, 0x10, 0xBC, 0x10,
+ 0xBD, 0x10, 0xBE, 0x10, 0xBF, 0x10, 0xC0, 0x10,
+ 0xC1, 0x10, 0xC2, 0x10, 0xC3, 0x10, 0xC4, 0x10,
+ 0xC5, 0x10, 0xFF, 0xFF, 0x1B, 0xD2, 0x21, 0xFF,
+ 0x22, 0xFF, 0x23, 0xFF, 0x24, 0xFF, 0x25, 0xFF,
+ 0x26, 0xFF, 0x27, 0xFF, 0x28, 0xFF, 0x29, 0xFF,
+ 0x2A, 0xFF, 0x2B, 0xFF, 0x2C, 0xFF, 0x2D, 0xFF,
+ 0x2E, 0xFF, 0x2F, 0xFF, 0x30, 0xFF, 0x31, 0xFF,
+ 0x32, 0xFF, 0x33, 0xFF, 0x34, 0xFF, 0x35, 0xFF,
+ 0x36, 0xFF, 0x37, 0xFF, 0x38, 0xFF, 0x39, 0xFF,
+ 0x3A, 0xFF, 0x5B, 0xFF, 0x5C, 0xFF, 0x5D, 0xFF,
+ 0x5E, 0xFF, 0x5F, 0xFF, 0x60, 0xFF, 0x61, 0xFF,
+ 0x62, 0xFF, 0x63, 0xFF, 0x64, 0xFF, 0x65, 0xFF,
+ 0x66, 0xFF, 0x67, 0xFF, 0x68, 0xFF, 0x69, 0xFF,
+ 0x6A, 0xFF, 0x6B, 0xFF, 0x6C, 0xFF, 0x6D, 0xFF,
+ 0x6E, 0xFF, 0x6F, 0xFF, 0x70, 0xFF, 0x71, 0xFF,
+ 0x72, 0xFF, 0x73, 0xFF, 0x74, 0xFF, 0x75, 0xFF,
+ 0x76, 0xFF, 0x77, 0xFF, 0x78, 0xFF, 0x79, 0xFF,
+ 0x7A, 0xFF, 0x7B, 0xFF, 0x7C, 0xFF, 0x7D, 0xFF,
+ 0x7E, 0xFF, 0x7F, 0xFF, 0x80, 0xFF, 0x81, 0xFF,
+ 0x82, 0xFF, 0x83, 0xFF, 0x84, 0xFF, 0x85, 0xFF,
+ 0x86, 0xFF, 0x87, 0xFF, 0x88, 0xFF, 0x89, 0xFF,
+ 0x8A, 0xFF, 0x8B, 0xFF, 0x8C, 0xFF, 0x8D, 0xFF,
+ 0x8E, 0xFF, 0x8F, 0xFF, 0x90, 0xFF, 0x91, 0xFF,
+ 0x92, 0xFF, 0x93, 0xFF, 0x94, 0xFF, 0x95, 0xFF,
+ 0x96, 0xFF, 0x97, 0xFF, 0x98, 0xFF, 0x99, 0xFF,
+ 0x9A, 0xFF, 0x9B, 0xFF, 0x9C, 0xFF, 0x9D, 0xFF,
+ 0x9E, 0xFF, 0x9F, 0xFF, 0xA0, 0xFF, 0xA1, 0xFF,
+ 0xA2, 0xFF, 0xA3, 0xFF, 0xA4, 0xFF, 0xA5, 0xFF,
+ 0xA6, 0xFF, 0xA7, 0xFF, 0xA8, 0xFF, 0xA9, 0xFF,
+ 0xAA, 0xFF, 0xAB, 0xFF, 0xAC, 0xFF, 0xAD, 0xFF,
+ 0xAE, 0xFF, 0xAF, 0xFF, 0xB0, 0xFF, 0xB1, 0xFF,
+ 0xB2, 0xFF, 0xB3, 0xFF, 0xB4, 0xFF, 0xB5, 0xFF,
+ 0xB6, 0xFF, 0xB7, 0xFF, 0xB8, 0xFF, 0xB9, 0xFF,
+ 0xBA, 0xFF, 0xBB, 0xFF, 0xBC, 0xFF, 0xBD, 0xFF,
+ 0xBE, 0xFF, 0xBF, 0xFF, 0xC0, 0xFF, 0xC1, 0xFF,
+ 0xC2, 0xFF, 0xC3, 0xFF, 0xC4, 0xFF, 0xC5, 0xFF,
+ 0xC6, 0xFF, 0xC7, 0xFF, 0xC8, 0xFF, 0xC9, 0xFF,
+ 0xCA, 0xFF, 0xCB, 0xFF, 0xCC, 0xFF, 0xCD, 0xFF,
+ 0xCE, 0xFF, 0xCF, 0xFF, 0xD0, 0xFF, 0xD1, 0xFF,
+ 0xD2, 0xFF, 0xD3, 0xFF, 0xD4, 0xFF, 0xD5, 0xFF,
+ 0xD6, 0xFF, 0xD7, 0xFF, 0xD8, 0xFF, 0xD9, 0xFF,
+ 0xDA, 0xFF, 0xDB, 0xFF, 0xDC, 0xFF, 0xDD, 0xFF,
+ 0xDE, 0xFF, 0xDF, 0xFF, 0xE0, 0xFF, 0xE1, 0xFF,
+ 0xE2, 0xFF, 0xE3, 0xFF, 0xE4, 0xFF, 0xE5, 0xFF,
+ 0xE6, 0xFF, 0xE7, 0xFF, 0xE8, 0xFF, 0xE9, 0xFF,
+ 0xEA, 0xFF, 0xEB, 0xFF, 0xEC, 0xFF, 0xED, 0xFF,
+ 0xEE, 0xFF, 0xEF, 0xFF, 0xF0, 0xFF, 0xF1, 0xFF,
+ 0xF2, 0xFF, 0xF3, 0xFF, 0xF4, 0xFF, 0xF5, 0xFF,
+ 0xF6, 0xFF, 0xF7, 0xFF, 0xF8, 0xFF, 0xF9, 0xFF,
+ 0xFA, 0xFF, 0xFB, 0xFF, 0xFC, 0xFF, 0xFD, 0xFF,
+ 0xFE, 0xFF, 0xFF, 0xFF
+};
diff --git a/drivers/staging/fbtft/fb_ssd1306.c b/drivers/staging/fbtft/fb_ssd1306.c
index 6cf9df579e..c97f14622d 100644
--- a/drivers/staging/fbtft/fb_ssd1306.c
+++ b/drivers/staging/fbtft/fb_ssd1306.c
@@ -55,6 +55,8 @@ static int init_display(struct fbtft_par *par)
write_reg(par, 0x3F);
else if (par->info->var.yres == 48)
write_reg(par, 0x2F);
+ else if (par->info->var.yres == 39)
+ write_reg(par, 0x27); /* https://libstock.mikroe.com/projects/download/1111/2577/1411057038_oled_b_click___e_mikroc_arm.zip */
else
write_reg(par, 0x1F);
@@ -72,16 +74,24 @@ static int init_display(struct fbtft_par *par)
/* Set Memory Addressing Mode */
write_reg(par, 0x20);
- /* Vertical addressing mode */
+ /* Vertical Addressing mode */
write_reg(par, 0x01);
/* Set Segment Re-map */
- /* column address 127 is mapped to SEG0 */
- write_reg(par, 0xA0 | 0x1);
+ if (par->info->var.yres == 39)
+ /* no segment re-map */
+ write_reg(par, 0xA0 | 0x0);
+ else
+ /* column address 127 is mapped to SEG0 */
+ write_reg(par, 0xA0 | 0x1);
/* Set COM Output Scan Direction */
- /* remapped mode. Scan from COM[N-1] to COM0 */
- write_reg(par, 0xC8);
+ if (par->info->var.yres == 39)
+ /* no columnt re-map mode. Scan from COM0 to COM[N-1] */
+ write_reg(par, 0xC0 | 0x0);
+ else
+ /* remapped mode. Scan from COM[N-1] to COM0 */
+ write_reg(par, 0xC0 | 0x8);
/* Set COM Pins Hardware Configuration */
write_reg(par, 0xDA);
@@ -91,18 +101,27 @@ static int init_display(struct fbtft_par *par)
else if (par->info->var.yres == 48)
/* A[4]=1b, Alternative COM pin configuration */
write_reg(par, 0x12);
+ else if (par->info->var.yres == 39)
+ /* A[4]=1b, Alternative COM pin configuration */
+ write_reg(par, 0x12);
else
/* A[4]=0b, Sequential COM pin configuration */
write_reg(par, 0x02);
/* Set Pre-charge Period */
write_reg(par, 0xD9);
- write_reg(par, 0xF1);
+ if (par->info->var.yres == 39)
+ write_reg(par, 0x25);
+ else
+ write_reg(par, 0xF1);
/* Set VCOMH Deselect Level */
write_reg(par, 0xDB);
- /* according to the datasheet, this value is out of bounds */
- write_reg(par, 0x40);
+ if (par->info->var.yres == 39)
+ write_reg(par, 0x20);
+ else
+ /* according to the datasheet, this value is out of bounds */
+ write_reg(par, 0x40);
/* Entire Display ON */
/* Resume to RAM content display. Output follows RAM content */
@@ -133,17 +152,35 @@ static void set_addr_win_64x48(struct fbtft_par *par)
write_reg(par, 0x5);
}
+static void set_addr_win_96x39(struct fbtft_par *par)
+{
+ /* Set Page Address */
+ write_reg(par, 0xB0);
+
+ /* Set Column Address */
+ write_reg(par, 0x21);
+ write_reg(par, 0x00);
+ write_reg(par, 0x5F);
+
+ /* Set Page Address Range */
+ write_reg(par, 0x22);
+ write_reg(par, 0x0);
+ write_reg(par, 0x4);
+}
+
static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
{
- /* Set Lower Column Start Address for Page Addressing Mode */
+ /* Set Lower Column Start Address for Vertical Addressing Mode */
write_reg(par, 0x00 | 0x0);
- /* Set Higher Column Start Address for Page Addressing Mode */
+ /* Set Higher Column Start Address for Vertical Addressing Mode */
write_reg(par, 0x10 | 0x0);
/* Set Display Start Line */
write_reg(par, 0x40 | 0x0);
if (par->info->var.xres == 64 && par->info->var.yres == 48)
set_addr_win_64x48(par);
+ else if (par->info->var.xres == 96 && par->info->var.yres == 39)
+ set_addr_win_96x39(par);
}
static int blank(struct fbtft_par *par, bool on)
@@ -188,11 +225,20 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
*buf |= BIT(i);
buf++;
}
+ if (yres % 8) {
+ *buf = 0x00;
+ for (i = 0; i < (yres - (y * 8)); i++)
+ if (vmem16[(y * 8 + i) * xres + x])
+ *buf |= BIT(i);
+ buf++;
+ y++;
+ }
}
/* Write data */
gpiod_set_value(par->gpio.dc, 1);
- ret = par->fbtftops.write(par, par->txbuf.buf, xres * yres / 8);
+ ret = par->fbtftops.write(par, par->txbuf.buf, xres * (yres / 8 + (yres % 8 != 0)));
+ //ret = par->fbtftops.write(par, par->txbuf.buf, xres * yres / 8);
if (ret < 0)
dev_err(par->info->device, "write failed and returned: %d\n",
ret);
diff --git a/drivers/staging/fbtft/fbtft_device.c b/drivers/staging/fbtft/fbtft_device.c
index 44e1410eb3..e8b4c496b1 100644
--- a/drivers/staging/fbtft/fbtft_device.c
+++ b/drivers/staging/fbtft/fbtft_device.c
@@ -348,6 +348,25 @@ static struct fbtft_device_display displays[] = {
},
}
}
+ }, {
+ .name = "mikroe_oledb",
+ .spi = &(struct spi_board_info) {
+ .modalias = "fb_ssd1306",
+ .max_speed_hz = 16000000,
+ .mode = SPI_MODE_0,
+ .platform_data = &(struct fbtft_platform_data) {
+ .display = {
+ .width = 96,
+ .height = 39,
+ .buswidth = 8,
+ },
+ .gpios = (const struct fbtft_gpio []) {
+ { "reset", 45 },
+ { "dc", 110 },
+ {},
+ },
+ }
+ }
}, {
.name = "admatec_c-berry28",
.spi = &(struct spi_board_info) {
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index c7623f99ac..fc9a83eb2e 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -76,6 +76,19 @@ config VT_CONSOLE_SLEEP
def_bool y
depends on VT_CONSOLE && PM_SLEEP
+config NR_TTY_DEVICES
+ int "Maximum tty device number"
+ depends on VT
+ range 12 63
+ default 63
+ ---help---
+ This option is used to change the number of tty devices in /dev.
+ The default value is 63. The lowest number you can set is 12,
+ 63 is also the upper limit so we don't overrun the serial
+ consoles.
+
+ If unsure, say 63.
+
config HW_CONSOLE
bool
depends on VT && !UML
diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c
index 3ef65cbd24..49d5b036cb 100644
--- a/drivers/tty/serial/8250/8250_omap.c
+++ b/drivers/tty/serial/8250/8250_omap.c
@@ -1498,10 +1498,10 @@ static int __init omap8250_console_fixup(void)
}
add_preferred_console("ttyS", idx, options);
- pr_err("WARNING: Your 'console=ttyO%d' has been replaced by 'ttyS%d'\n",
+ pr_info("WARNING: Your 'console=ttyO%d' has been replaced by 'ttyS%d'\n",
idx, idx);
- pr_err("This ensures that you still see kernel messages. Please\n");
- pr_err("update your kernel commandline.\n");
+ pr_info("This ensures that you still see kernel messages. Please\n");
+ pr_info("update your kernel commandline.\n");
return 0;
}
console_initcall(omap8250_console_fixup);
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 6e59d370ef..2162fd85b3 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -47,6 +47,7 @@ config USB
depends on USB_ARCH_HAS_HCD
select GENERIC_ALLOCATOR
select USB_COMMON
+ select POWER_SEQUENCE
select NLS # for UTF-8 strings
---help---
Universal Serial Bus (USB) is a specification for a serial bus
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 236313f41f..3db75b0d24 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -29,6 +29,7 @@
#include <linux/random.h>
#include <linux/pm_qos.h>
#include <linux/kobject.h>
+#include <linux/power/pwrseq.h>
#include <linux/uaccess.h>
#include <asm/byteorder.h>
@@ -1705,6 +1706,7 @@ static void hub_disconnect(struct usb_interface *intf)
hub->error = 0;
hub_quiesce(hub, HUB_DISCONNECT);
+ of_pwrseq_off_list(&hub->pwrseq_on_list);
mutex_lock(&usb_port_peer_mutex);
/* Avoid races with recursively_mark_NOTATTACHED() */
@@ -1751,11 +1753,41 @@ static bool hub_descriptor_is_sane(struct usb_host_interface *desc)
return true;
}
+#ifdef CONFIG_OF
+static int hub_of_pwrseq_on(struct usb_hub *hub)
+{
+ struct device *parent;
+ struct usb_device *hdev = hub->hdev;
+ struct device_node *np;
+ int ret;
+
+ if (hdev->parent)
+ parent = &hdev->dev;
+ else
+ parent = bus_to_hcd(hdev->bus)->self.sysdev;
+
+ for_each_child_of_node(parent->of_node, np) {
+ ret = of_pwrseq_on_list(np, &hub->pwrseq_on_list);
+ /* Maybe no power sequence library is chosen */
+ if (ret && ret != -ENOENT)
+ return ret;
+ }
+
+ return 0;
+}
+#else
+static int hub_of_pwrseq_on(struct usb_hub *hub)
+{
+ return 0;
+}
+#endif
+
static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_host_interface *desc;
struct usb_device *hdev;
struct usb_hub *hub;
+ int ret = -ENODEV;
desc = intf->cur_altsetting;
hdev = interface_to_usbdev(intf);
@@ -1846,6 +1878,7 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
INIT_DELAYED_WORK(&hub->leds, led_work);
INIT_DELAYED_WORK(&hub->init_work, NULL);
INIT_WORK(&hub->events, hub_event);
+ INIT_LIST_HEAD(&hub->pwrseq_on_list);
spin_lock_init(&hub->irq_urb_lock);
timer_setup(&hub->irq_urb_retry, hub_retry_irq_urb, 0);
usb_get_intf(intf);
@@ -1861,11 +1894,14 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
if (id->driver_info & HUB_QUIRK_CHECK_PORT_AUTOSUSPEND)
hub->quirk_check_port_auto_suspend = 1;
- if (hub_configure(hub, &desc->endpoint[0].desc) >= 0)
- return 0;
+ if (hub_configure(hub, &desc->endpoint[0].desc) >= 0) {
+ ret = hub_of_pwrseq_on(hub);
+ if (!ret)
+ return 0;
+ }
hub_disconnect(intf);
- return -ENODEV;
+ return ret;
}
static int
@@ -3720,7 +3756,7 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg)
/* stop hub_wq and related activity */
hub_quiesce(hub, HUB_SUSPEND);
- return 0;
+ return pwrseq_suspend_list(&hub->pwrseq_on_list);
}
/* Report wakeup requests from the ports of a resuming root hub */
@@ -3760,8 +3796,13 @@ static void report_wakeup_requests(struct usb_hub *hub)
static int hub_resume(struct usb_interface *intf)
{
struct usb_hub *hub = usb_get_intfdata(intf);
+ int ret;
dev_dbg(&intf->dev, "%s\n", __func__);
+ ret = pwrseq_resume_list(&hub->pwrseq_on_list);
+ if (ret)
+ return ret;
+
hub_activate(hub, HUB_RESUME);
/*
diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h
index a9e24e4b8d..feab956a14 100644
--- a/drivers/usb/core/hub.h
+++ b/drivers/usb/core/hub.h
@@ -72,6 +72,7 @@ struct usb_hub {
spinlock_t irq_urb_lock;
struct timer_list irq_urb_retry;
struct usb_port **ports;
+ struct list_head pwrseq_on_list; /* powered pwrseq node list */
};
/**
diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c
index 65f634ec7f..842ec79ba8 100644
--- a/drivers/usb/gadget/function/u_serial.c
+++ b/drivers/usb/gadget/function/u_serial.c
@@ -1366,8 +1366,13 @@ void gserial_disconnect(struct gserial *gser)
gser->ioport = NULL;
if (port->port.count > 0 || port->openclose) {
wake_up_interruptible(&port->drain_wait);
+#if 0
if (port->port.tty)
tty_hangup(port->port.tty);
+#else
+ if (port->port.tty)
+ stop_tty(port->port.tty);
+#endif
}
spin_unlock_irqrestore(&port->port_lock, flags);
diff --git a/drivers/video/logo/Kconfig b/drivers/video/logo/Kconfig
index 6d6f8c0879..93b46e9177 100644
--- a/drivers/video/logo/Kconfig
+++ b/drivers/video/logo/Kconfig
@@ -16,56 +16,117 @@ config FB_LOGO_EXTRA
depends on FB=y
default y if SPU_BASE
+comment "Available logos"
+
+config LOGO_PCK_CLUT224
+ bool "224-color Parabola Community Kernel/Meditating Tux logo"
+ default y
+
config LOGO_LINUX_MONO
bool "Standard black and white Linux logo"
- default y
+ default n
config LOGO_LINUX_VGA16
bool "Standard 16-color Linux logo"
- default y
+ default n
config LOGO_LINUX_CLUT224
bool "Standard 224-color Linux logo"
- default y
+ default n
+
+config LOGO_OLDPCK_CLUT224
+ bool "224-color Old Parabola Community Kernel logo"
+ depends on LOGO
+ default n
+
+config LOGO_ARCH_CLUT224
+ bool "224-color Arch Linux logo"
+ depends on LOGO
+ default n
+
+config LOGO_GENTOO_CLUT224
+ bool "224-color Gentoo Linux logo"
+ depends on LOGO
+ default n
+
+config LOGO_EXHERBO_CLUT224
+ bool "224-color Exherbo Linux logo"
+ depends on LOGO
+ default n
+
+config LOGO_SLACKWARE_CLUT224
+ bool "224-color Slackware Linux logo"
+ depends on LOGO
+ default n
+
+config LOGO_DEBIAN_CLUT224
+ bool "224-color Debian Linux logo"
+ depends on LOGO
+ default n
+
+config LOGO_FEDORASIMPLE_CLUT224
+ bool "224-color Fedora Simple Linux logo"
+ depends on LOGO
+ default n
+
+config LOGO_FEDORAGLOSSY_CLUT224
+ bool "224-color Fedora Glossy Linux logo"
+ depends on LOGO
+ default n
+
+config LOGO_TITS_CLUT224
+ bool "224-color Tits logo"
+ depends on LOGO
+ default n
+
+config LOGO_BSD_CLUT224
+ bool "224-color BSD Devil logo"
+ depends on LOGO
+ default n
+
+config LOGO_FBSD_CLUT224
+ bool "224-color FreeBSD logo"
+ depends on LOGO
+ default n
config LOGO_DEC_CLUT224
bool "224-color Digital Equipment Corporation Linux logo"
depends on MACH_DECSTATION || ALPHA
- default y
+ default n
config LOGO_MAC_CLUT224
bool "224-color Macintosh Linux logo"
depends on MAC
- default y
+ default n
config LOGO_PARISC_CLUT224
bool "224-color PA-RISC Linux logo"
depends on PARISC
- default y
+ default n
config LOGO_SGI_CLUT224
bool "224-color SGI Linux logo"
depends on SGI_IP22 || SGI_IP27 || SGI_IP32
- default y
+ default n
config LOGO_SUN_CLUT224
bool "224-color Sun Linux logo"
depends on SPARC
- default y
+ default n
config LOGO_SUPERH_MONO
bool "Black and white SuperH Linux logo"
depends on SUPERH
- default y
+ default n
config LOGO_SUPERH_VGA16
bool "16-color SuperH Linux logo"
depends on SUPERH
- default y
+ default n
config LOGO_SUPERH_CLUT224
bool "224-color SuperH Linux logo"
depends on SUPERH
- default y
+ default n
endif # LOGO
diff --git a/drivers/video/logo/Makefile b/drivers/video/logo/Makefile
index 228a89b9bd..b668d31d4e 100644
--- a/drivers/video/logo/Makefile
+++ b/drivers/video/logo/Makefile
@@ -5,6 +5,18 @@ obj-$(CONFIG_LOGO) += logo.o
obj-$(CONFIG_LOGO_LINUX_MONO) += logo_linux_mono.o
obj-$(CONFIG_LOGO_LINUX_VGA16) += logo_linux_vga16.o
obj-$(CONFIG_LOGO_LINUX_CLUT224) += logo_linux_clut224.o
+obj-$(CONFIG_LOGO_PCK_CLUT224) += logo_pck_clut224.o
+obj-$(CONFIG_LOGO_OLDPCK_CLUT224) += logo_oldpck_clut224.o
+obj-$(CONFIG_LOGO_ARCH_CLUT224) += logo_arch_clut224.o
+obj-$(CONFIG_LOGO_GENTOO_CLUT224) += logo_gentoo_clut224.o
+obj-$(CONFIG_LOGO_EXHERBO_CLUT224) += logo_exherbo_clut224.o
+obj-$(CONFIG_LOGO_SLACKWARE_CLUT224) += logo_slackware_clut224.o
+obj-$(CONFIG_LOGO_DEBIAN_CLUT224) += logo_debian_clut224.o
+obj-$(CONFIG_LOGO_FEDORASIMPLE_CLUT224) += logo_fedorasimple_clut224.o
+obj-$(CONFIG_LOGO_FEDORAGLOSSY_CLUT224) += logo_fedoraglossy_clut224.o
+obj-$(CONFIG_LOGO_TITS_CLUT224) += logo_tits_clut224.o
+obj-$(CONFIG_LOGO_BSD_CLUT224) += logo_bsd_clut224.o
+obj-$(CONFIG_LOGO_FBSD_CLUT224) += logo_fbsd_clut224.o
obj-$(CONFIG_LOGO_DEC_CLUT224) += logo_dec_clut224.o
obj-$(CONFIG_LOGO_MAC_CLUT224) += logo_mac_clut224.o
obj-$(CONFIG_LOGO_PARISC_CLUT224) += logo_parisc_clut224.o
diff --git a/drivers/video/logo/logo.c b/drivers/video/logo/logo.c
index 141f15a9a4..8ed477ce64 100644
--- a/drivers/video/logo/logo.c
+++ b/drivers/video/logo/logo.c
@@ -99,6 +99,54 @@ const struct linux_logo * __ref fb_find_logo(int depth)
#ifdef CONFIG_LOGO_SUPERH_CLUT224
/* SuperH Linux logo */
logo = &logo_superh_clut224;
+#endif
+#ifdef CONFIG_LOGO_PCK_CLUT224
+ /* Parabola Community-Kernel logo */
+ logo = &logo_pck_clut224;
+#endif
+#ifdef CONFIG_LOGO_OLDPCK_CLUT224
+ /* Old Parabola Community-Kernel logo */
+ logo = &logo_oldpck_clut224;
+#endif
+#ifdef CONFIG_LOGO_ARCH_CLUT224
+ /* Arch Linux logo */
+ logo = &logo_arch_clut224;
+#endif
+#ifdef CONFIG_LOGO_GENTOO_CLUT224
+ /* Gentoo Linux logo */
+ logo = &logo_gentoo_clut224;
+#endif
+#ifdef CONFIG_LOGO_EXHERBO_CLUT224
+ /* Exherbo Linux logo */
+ logo = &logo_exherbo_clut224;
+#endif
+#ifdef CONFIG_LOGO_SLACKWARE_CLUT224
+ /* Slackware Linux logo */
+ logo = &logo_slackware_clut224;
+#endif
+#ifdef CONFIG_LOGO_DEBIAN_CLUT224
+ /* Debian Linux logo */
+ logo = &logo_debian_clut224;
+#endif
+#ifdef CONFIG_LOGO_FEDORASIMPLE_CLUT224
+ /* Fedora Simple logo */
+ logo = &logo_fedorasimple_clut224;
+#endif
+#ifdef CONFIG_LOGO_FEDORAGLOSSY_CLUT224
+ /* Fedora Glossy logo */
+ logo = &logo_fedoraglossy_clut224;
+#endif
+#ifdef CONFIG_LOGO_TITS_CLUT224
+ /* Tits logo */
+ logo = &logo_tits_clut224;
+#endif
+#ifdef CONFIG_LOGO_BSD_CLUT224
+ /* BSD logo */
+ logo = &logo_bsd_clut224;
+#endif
+#ifdef CONFIG_LOGO_FBSD_CLUT224
+ /* Free BSD logo */
+ logo = &logo_fbsd_clut224;
#endif
}
return logo;
diff --git a/drivers/video/logo/logo_arch_clut224.ppm b/drivers/video/logo/logo_arch_clut224.ppm
new file mode 100644
index 0000000000..e4d8daa69d
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diff --git a/drivers/video/logo/logo_linux_mono.pbm b/drivers/video/logo/logo_linux_mono.pbm
index 2f14d9fedf..664de62595 100644
--- a/drivers/video/logo/logo_linux_mono.pbm
+++ b/drivers/video/logo/logo_linux_mono.pbm
@@ -1,203 +1,72 @@
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diff --git a/fs/Kconfig b/fs/Kconfig
index bfb1c6095c..bddba5bb30 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -261,6 +261,7 @@ source "fs/romfs/Kconfig"
source "fs/pstore/Kconfig"
source "fs/sysv/Kconfig"
source "fs/ufs/Kconfig"
+source "fs/aufs/Kconfig"
endif # MISC_FILESYSTEMS
diff --git a/fs/Makefile b/fs/Makefile
index d60089fd68..924c16a40b 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -130,3 +130,4 @@ obj-$(CONFIG_F2FS_FS) += f2fs/
obj-$(CONFIG_CEPH_FS) += ceph/
obj-$(CONFIG_PSTORE) += pstore/
obj-$(CONFIG_EFIVAR_FS) += efivarfs/
+obj-$(CONFIG_AUFS_FS) += aufs/
diff --git a/fs/aufs/Kconfig b/fs/aufs/Kconfig
new file mode 100644
index 0000000000..9f43642571
--- /dev/null
+++ b/fs/aufs/Kconfig
@@ -0,0 +1,199 @@
+# SPDX-License-Identifier: GPL-2.0
+config AUFS_FS
+ tristate "Aufs (Advanced multi layered unification filesystem) support"
+ help
+ Aufs is a stackable unification filesystem such as Unionfs,
+ which unifies several directories and provides a merged single
+ directory.
+ In the early days, aufs was entirely re-designed and
+ re-implemented Unionfs Version 1.x series. Introducing many
+ original ideas, approaches and improvements, it becomes totally
+ different from Unionfs while keeping the basic features.
+
+if AUFS_FS
+choice
+ prompt "Maximum number of branches"
+ default AUFS_BRANCH_MAX_127
+ help
+ Specifies the maximum number of branches (or member directories)
+ in a single aufs. The larger value consumes more system
+ resources and has a minor impact to performance.
+config AUFS_BRANCH_MAX_127
+ bool "127"
+ help
+ Specifies the maximum number of branches (or member directories)
+ in a single aufs. The larger value consumes more system
+ resources and has a minor impact to performance.
+config AUFS_BRANCH_MAX_511
+ bool "511"
+ help
+ Specifies the maximum number of branches (or member directories)
+ in a single aufs. The larger value consumes more system
+ resources and has a minor impact to performance.
+config AUFS_BRANCH_MAX_1023
+ bool "1023"
+ help
+ Specifies the maximum number of branches (or member directories)
+ in a single aufs. The larger value consumes more system
+ resources and has a minor impact to performance.
+config AUFS_BRANCH_MAX_32767
+ bool "32767"
+ help
+ Specifies the maximum number of branches (or member directories)
+ in a single aufs. The larger value consumes more system
+ resources and has a minor impact to performance.
+endchoice
+
+config AUFS_SBILIST
+ bool
+ depends on AUFS_MAGIC_SYSRQ || PROC_FS
+ default y
+ help
+ Automatic configuration for internal use.
+ When aufs supports Magic SysRq or /proc, enabled automatically.
+
+config AUFS_HNOTIFY
+ bool "Detect direct branch access (bypassing aufs)"
+ help
+ If you want to modify files on branches directly, eg. bypassing aufs,
+ and want aufs to detect the changes of them fully, then enable this
+ option and use 'udba=notify' mount option.
+ Currently there is only one available configuration, "fsnotify".
+ It will have a negative impact to the performance.
+ See detail in aufs.5.
+
+choice
+ prompt "method" if AUFS_HNOTIFY
+ default AUFS_HFSNOTIFY
+config AUFS_HFSNOTIFY
+ bool "fsnotify"
+ select FSNOTIFY
+endchoice
+
+config AUFS_EXPORT
+ bool "NFS-exportable aufs"
+ depends on EXPORTFS
+ help
+ If you want to export your mounted aufs via NFS, then enable this
+ option. There are several requirements for this configuration.
+ See detail in aufs.5.
+
+config AUFS_INO_T_64
+ bool
+ depends on AUFS_EXPORT
+ depends on 64BIT && !(ALPHA || S390)
+ default y
+ help
+ Automatic configuration for internal use.
+ /* typedef unsigned long/int __kernel_ino_t */
+ /* alpha and s390x are int */
+
+config AUFS_XATTR
+ bool "support for XATTR/EA (including Security Labels)"
+ help
+ If your branch fs supports XATTR/EA and you want to make them
+ available in aufs too, then enable this opsion and specify the
+ branch attributes for EA.
+ See detail in aufs.5.
+
+config AUFS_FHSM
+ bool "File-based Hierarchical Storage Management"
+ help
+ Hierarchical Storage Management (or HSM) is a well-known feature
+ in the storage world. Aufs provides this feature as file-based.
+ with multiple branches.
+ These multiple branches are prioritized, ie. the topmost one
+ should be the fastest drive and be used heavily.
+
+config AUFS_RDU
+ bool "Readdir in userspace"
+ help
+ Aufs has two methods to provide a merged view for a directory,
+ by a user-space library and by kernel-space natively. The latter
+ is always enabled but sometimes large and slow.
+ If you enable this option, install the library in aufs2-util
+ package, and set some environment variables for your readdir(3),
+ then the work will be handled in user-space which generally
+ shows better performance in most cases.
+ See detail in aufs.5.
+
+config AUFS_DIRREN
+ bool "Workaround for rename(2)-ing a directory"
+ help
+ By default, aufs returns EXDEV error in renameing a dir who has
+ his child on the lower branch, since it is a bad idea to issue
+ rename(2) internally for every lower branch. But user may not
+ accept this behaviour. So here is a workaround to allow such
+ rename(2) and store some extra infromation on the writable
+ branch. Obviously this costs high (and I don't like it).
+ To use this feature, you need to enable this configuration AND
+ to specify the mount option `dirren.'
+ See details in aufs.5 and the design documents.
+
+config AUFS_SHWH
+ bool "Show whiteouts"
+ help
+ If you want to make the whiteouts in aufs visible, then enable
+ this option and specify 'shwh' mount option. Although it may
+ sounds like philosophy or something, but in technically it
+ simply shows the name of whiteout with keeping its behaviour.
+
+config AUFS_BR_RAMFS
+ bool "Ramfs (initramfs/rootfs) as an aufs branch"
+ help
+ If you want to use ramfs as an aufs branch fs, then enable this
+ option. Generally tmpfs is recommended.
+ Aufs prohibited them to be a branch fs by default, because
+ initramfs becomes unusable after switch_root or something
+ generally. If you sets initramfs as an aufs branch and boot your
+ system by switch_root, you will meet a problem easily since the
+ files in initramfs may be inaccessible.
+ Unless you are going to use ramfs as an aufs branch fs without
+ switch_root or something, leave it N.
+
+config AUFS_BR_FUSE
+ bool "Fuse fs as an aufs branch"
+ depends on FUSE_FS
+ select AUFS_POLL
+ help
+ If you want to use fuse-based userspace filesystem as an aufs
+ branch fs, then enable this option.
+ It implements the internal poll(2) operation which is
+ implemented by fuse only (curretnly).
+
+config AUFS_POLL
+ bool
+ help
+ Automatic configuration for internal use.
+
+config AUFS_BR_HFSPLUS
+ bool "Hfsplus as an aufs branch"
+ depends on HFSPLUS_FS
+ default y
+ help
+ If you want to use hfsplus fs as an aufs branch fs, then enable
+ this option. This option introduces a small overhead at
+ copying-up a file on hfsplus.
+
+config AUFS_BDEV_LOOP
+ bool
+ depends on BLK_DEV_LOOP
+ default y
+ help
+ Automatic configuration for internal use.
+ Convert =[ym] into =y.
+
+config AUFS_DEBUG
+ bool "Debug aufs"
+ help
+ Enable this to compile aufs internal debug code.
+ It will have a negative impact to the performance.
+
+config AUFS_MAGIC_SYSRQ
+ bool
+ depends on AUFS_DEBUG && MAGIC_SYSRQ
+ default y
+ help
+ Automatic configuration for internal use.
+ When aufs supports Magic SysRq, enabled automatically.
+endif
diff --git a/fs/aufs/Makefile b/fs/aufs/Makefile
new file mode 100644
index 0000000000..2c819a6493
--- /dev/null
+++ b/fs/aufs/Makefile
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: GPL-2.0
+
+include ${src}/magic.mk
+ifeq (${CONFIG_AUFS_FS},m)
+include ${src}/conf.mk
+endif
+-include ${src}/priv_def.mk
+
+# cf. include/linux/kernel.h
+# enable pr_debug
+ccflags-y += -DDEBUG
+# sparse requires the full pathname
+ifdef M
+ccflags-y += -include ${M}/../../include/uapi/linux/aufs_type.h
+else
+ccflags-y += -include ${srctree}/include/uapi/linux/aufs_type.h
+endif
+
+obj-$(CONFIG_AUFS_FS) += aufs.o
+aufs-y := module.o sbinfo.o super.o branch.o xino.o sysaufs.o opts.o \
+ wkq.o vfsub.o dcsub.o \
+ cpup.o whout.o wbr_policy.o \
+ dinfo.o dentry.o \
+ dynop.o \
+ finfo.o file.o f_op.o \
+ dir.o vdir.o \
+ iinfo.o inode.o i_op.o i_op_add.o i_op_del.o i_op_ren.o \
+ mvdown.o ioctl.o
+
+# all are boolean
+aufs-$(CONFIG_PROC_FS) += procfs.o plink.o
+aufs-$(CONFIG_SYSFS) += sysfs.o
+aufs-$(CONFIG_DEBUG_FS) += dbgaufs.o
+aufs-$(CONFIG_AUFS_BDEV_LOOP) += loop.o
+aufs-$(CONFIG_AUFS_HNOTIFY) += hnotify.o
+aufs-$(CONFIG_AUFS_HFSNOTIFY) += hfsnotify.o
+aufs-$(CONFIG_AUFS_EXPORT) += export.o
+aufs-$(CONFIG_AUFS_XATTR) += xattr.o
+aufs-$(CONFIG_FS_POSIX_ACL) += posix_acl.o
+aufs-$(CONFIG_AUFS_DIRREN) += dirren.o
+aufs-$(CONFIG_AUFS_FHSM) += fhsm.o
+aufs-$(CONFIG_AUFS_POLL) += poll.o
+aufs-$(CONFIG_AUFS_RDU) += rdu.o
+aufs-$(CONFIG_AUFS_BR_HFSPLUS) += hfsplus.o
+aufs-$(CONFIG_AUFS_DEBUG) += debug.o
+aufs-$(CONFIG_AUFS_MAGIC_SYSRQ) += sysrq.o
diff --git a/fs/aufs/aufs.h b/fs/aufs/aufs.h
new file mode 100644
index 0000000000..a62a85211b
--- /dev/null
+++ b/fs/aufs/aufs.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * all header files
+ */
+
+#ifndef __AUFS_H__
+#define __AUFS_H__
+
+#ifdef __KERNEL__
+
+#define AuStub(type, name, body, ...) \
+ static inline type name(__VA_ARGS__) { body; }
+
+#define AuStubVoid(name, ...) \
+ AuStub(void, name, , __VA_ARGS__)
+#define AuStubInt0(name, ...) \
+ AuStub(int, name, return 0, __VA_ARGS__)
+
+#include "debug.h"
+
+#include "branch.h"
+#include "cpup.h"
+#include "dcsub.h"
+#include "dbgaufs.h"
+#include "dentry.h"
+#include "dir.h"
+#include "dirren.h"
+#include "dynop.h"
+#include "file.h"
+#include "fstype.h"
+#include "hbl.h"
+#include "inode.h"
+#include "lcnt.h"
+#include "loop.h"
+#include "module.h"
+#include "opts.h"
+#include "rwsem.h"
+#include "super.h"
+#include "sysaufs.h"
+#include "vfsub.h"
+#include "whout.h"
+#include "wkq.h"
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_H__ */
diff --git a/fs/aufs/branch.c b/fs/aufs/branch.c
new file mode 100644
index 0000000000..608bf76f8f
--- /dev/null
+++ b/fs/aufs/branch.c
@@ -0,0 +1,1428 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * branch management
+ */
+
+#include <linux/compat.h>
+#include <linux/statfs.h>
+#include "aufs.h"
+
+/*
+ * free a single branch
+ */
+static void au_br_do_free(struct au_branch *br)
+{
+ int i;
+ struct au_wbr *wbr;
+ struct au_dykey **key;
+
+ au_hnotify_fin_br(br);
+ /* always, regardless the mount option */
+ au_dr_hino_free(&br->br_dirren);
+ au_xino_put(br);
+
+ AuLCntZero(au_lcnt_read(&br->br_nfiles, /*do_rev*/0));
+ au_lcnt_fin(&br->br_nfiles, /*do_sync*/0);
+ AuLCntZero(au_lcnt_read(&br->br_count, /*do_rev*/0));
+ au_lcnt_fin(&br->br_count, /*do_sync*/0);
+
+ wbr = br->br_wbr;
+ if (wbr) {
+ for (i = 0; i < AuBrWh_Last; i++)
+ dput(wbr->wbr_wh[i]);
+ AuDebugOn(atomic_read(&wbr->wbr_wh_running));
+ AuRwDestroy(&wbr->wbr_wh_rwsem);
+ }
+
+ if (br->br_fhsm) {
+ au_br_fhsm_fin(br->br_fhsm);
+ au_kfree_try_rcu(br->br_fhsm);
+ }
+
+ key = br->br_dykey;
+ for (i = 0; i < AuBrDynOp; i++, key++)
+ if (*key)
+ au_dy_put(*key);
+ else
+ break;
+
+ /* recursive lock, s_umount of branch's */
+ /* synchronize_rcu(); */ /* why? */
+ lockdep_off();
+ path_put(&br->br_path);
+ lockdep_on();
+ au_kfree_rcu(wbr);
+ au_lcnt_wait_for_fin(&br->br_nfiles);
+ au_lcnt_wait_for_fin(&br->br_count);
+ /* I don't know why, but percpu_refcount requires this */
+ /* synchronize_rcu(); */
+ au_kfree_rcu(br);
+}
+
+/*
+ * frees all branches
+ */
+void au_br_free(struct au_sbinfo *sbinfo)
+{
+ aufs_bindex_t bmax;
+ struct au_branch **br;
+
+ AuRwMustWriteLock(&sbinfo->si_rwsem);
+
+ bmax = sbinfo->si_bbot + 1;
+ br = sbinfo->si_branch;
+ while (bmax--)
+ au_br_do_free(*br++);
+}
+
+/*
+ * find the index of a branch which is specified by @br_id.
+ */
+int au_br_index(struct super_block *sb, aufs_bindex_t br_id)
+{
+ aufs_bindex_t bindex, bbot;
+
+ bbot = au_sbbot(sb);
+ for (bindex = 0; bindex <= bbot; bindex++)
+ if (au_sbr_id(sb, bindex) == br_id)
+ return bindex;
+ return -1;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * add a branch
+ */
+
+static int test_overlap(struct super_block *sb, struct dentry *h_adding,
+ struct dentry *h_root)
+{
+ if (unlikely(h_adding == h_root
+ || au_test_loopback_overlap(sb, h_adding)))
+ return 1;
+ if (h_adding->d_sb != h_root->d_sb)
+ return 0;
+ return au_test_subdir(h_adding, h_root)
+ || au_test_subdir(h_root, h_adding);
+}
+
+/*
+ * returns a newly allocated branch. @new_nbranch is a number of branches
+ * after adding a branch.
+ */
+static struct au_branch *au_br_alloc(struct super_block *sb, int new_nbranch,
+ int perm)
+{
+ struct au_branch *add_branch;
+ struct dentry *root;
+ struct inode *inode;
+ int err;
+
+ err = -ENOMEM;
+ add_branch = kzalloc(sizeof(*add_branch), GFP_NOFS);
+ if (unlikely(!add_branch))
+ goto out;
+ add_branch->br_xino = au_xino_alloc(/*nfile*/1);
+ if (unlikely(!add_branch->br_xino))
+ goto out_br;
+ err = au_hnotify_init_br(add_branch, perm);
+ if (unlikely(err))
+ goto out_xino;
+
+ if (au_br_writable(perm)) {
+ /* may be freed separately at changing the branch permission */
+ add_branch->br_wbr = kzalloc(sizeof(*add_branch->br_wbr),
+ GFP_NOFS);
+ if (unlikely(!add_branch->br_wbr))
+ goto out_hnotify;
+ }
+
+ if (au_br_fhsm(perm)) {
+ err = au_fhsm_br_alloc(add_branch);
+ if (unlikely(err))
+ goto out_wbr;
+ }
+
+ root = sb->s_root;
+ err = au_sbr_realloc(au_sbi(sb), new_nbranch, /*may_shrink*/0);
+ if (!err)
+ err = au_di_realloc(au_di(root), new_nbranch, /*may_shrink*/0);
+ if (!err) {
+ inode = d_inode(root);
+ err = au_hinode_realloc(au_ii(inode), new_nbranch,
+ /*may_shrink*/0);
+ }
+ if (!err)
+ return add_branch; /* success */
+
+out_wbr:
+ au_kfree_rcu(add_branch->br_wbr);
+out_hnotify:
+ au_hnotify_fin_br(add_branch);
+out_xino:
+ au_xino_put(add_branch);
+out_br:
+ au_kfree_rcu(add_branch);
+out:
+ return ERR_PTR(err);
+}
+
+/*
+ * test if the branch permission is legal or not.
+ */
+static int test_br(struct inode *inode, int brperm, char *path)
+{
+ int err;
+
+ err = (au_br_writable(brperm) && IS_RDONLY(inode));
+ if (!err)
+ goto out;
+
+ err = -EINVAL;
+ pr_err("write permission for readonly mount or inode, %s\n", path);
+
+out:
+ return err;
+}
+
+/*
+ * returns:
+ * 0: success, the caller will add it
+ * plus: success, it is already unified, the caller should ignore it
+ * minus: error
+ */
+static int test_add(struct super_block *sb, struct au_opt_add *add, int remount)
+{
+ int err;
+ aufs_bindex_t bbot, bindex;
+ struct dentry *root, *h_dentry;
+ struct inode *inode, *h_inode;
+
+ root = sb->s_root;
+ bbot = au_sbbot(sb);
+ if (unlikely(bbot >= 0
+ && au_find_dbindex(root, add->path.dentry) >= 0)) {
+ err = 1;
+ if (!remount) {
+ err = -EINVAL;
+ pr_err("%s duplicated\n", add->pathname);
+ }
+ goto out;
+ }
+
+ err = -ENOSPC; /* -E2BIG; */
+ if (unlikely(AUFS_BRANCH_MAX <= add->bindex
+ || AUFS_BRANCH_MAX - 1 <= bbot)) {
+ pr_err("number of branches exceeded %s\n", add->pathname);
+ goto out;
+ }
+
+ err = -EDOM;
+ if (unlikely(add->bindex < 0 || bbot + 1 < add->bindex)) {
+ pr_err("bad index %d\n", add->bindex);
+ goto out;
+ }
+
+ inode = d_inode(add->path.dentry);
+ err = -ENOENT;
+ if (unlikely(!inode->i_nlink)) {
+ pr_err("no existence %s\n", add->pathname);
+ goto out;
+ }
+
+ err = -EINVAL;
+ if (unlikely(inode->i_sb == sb)) {
+ pr_err("%s must be outside\n", add->pathname);
+ goto out;
+ }
+
+ if (unlikely(au_test_fs_unsuppoted(inode->i_sb))) {
+ pr_err("unsupported filesystem, %s (%s)\n",
+ add->pathname, au_sbtype(inode->i_sb));
+ goto out;
+ }
+
+ if (unlikely(inode->i_sb->s_stack_depth)) {
+ pr_err("already stacked, %s (%s)\n",
+ add->pathname, au_sbtype(inode->i_sb));
+ goto out;
+ }
+
+ err = test_br(d_inode(add->path.dentry), add->perm, add->pathname);
+ if (unlikely(err))
+ goto out;
+
+ if (bbot < 0)
+ return 0; /* success */
+
+ err = -EINVAL;
+ for (bindex = 0; bindex <= bbot; bindex++)
+ if (unlikely(test_overlap(sb, add->path.dentry,
+ au_h_dptr(root, bindex)))) {
+ pr_err("%s is overlapped\n", add->pathname);
+ goto out;
+ }
+
+ err = 0;
+ if (au_opt_test(au_mntflags(sb), WARN_PERM)) {
+ h_dentry = au_h_dptr(root, 0);
+ h_inode = d_inode(h_dentry);
+ if ((h_inode->i_mode & S_IALLUGO) != (inode->i_mode & S_IALLUGO)
+ || !uid_eq(h_inode->i_uid, inode->i_uid)
+ || !gid_eq(h_inode->i_gid, inode->i_gid))
+ pr_warn("uid/gid/perm %s %u/%u/0%o, %u/%u/0%o\n",
+ add->pathname,
+ i_uid_read(inode), i_gid_read(inode),
+ (inode->i_mode & S_IALLUGO),
+ i_uid_read(h_inode), i_gid_read(h_inode),
+ (h_inode->i_mode & S_IALLUGO));
+ }
+
+out:
+ return err;
+}
+
+/*
+ * initialize or clean the whiteouts for an adding branch
+ */
+static int au_br_init_wh(struct super_block *sb, struct au_branch *br,
+ int new_perm)
+{
+ int err, old_perm;
+ aufs_bindex_t bindex;
+ struct inode *h_inode;
+ struct au_wbr *wbr;
+ struct au_hinode *hdir;
+ struct dentry *h_dentry;
+
+ err = vfsub_mnt_want_write(au_br_mnt(br));
+ if (unlikely(err))
+ goto out;
+
+ wbr = br->br_wbr;
+ old_perm = br->br_perm;
+ br->br_perm = new_perm;
+ hdir = NULL;
+ h_inode = NULL;
+ bindex = au_br_index(sb, br->br_id);
+ if (0 <= bindex) {
+ hdir = au_hi(d_inode(sb->s_root), bindex);
+ au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
+ } else {
+ h_dentry = au_br_dentry(br);
+ h_inode = d_inode(h_dentry);
+ inode_lock_nested(h_inode, AuLsc_I_PARENT);
+ }
+ if (!wbr)
+ err = au_wh_init(br, sb);
+ else {
+ wbr_wh_write_lock(wbr);
+ err = au_wh_init(br, sb);
+ wbr_wh_write_unlock(wbr);
+ }
+ if (hdir)
+ au_hn_inode_unlock(hdir);
+ else
+ inode_unlock(h_inode);
+ vfsub_mnt_drop_write(au_br_mnt(br));
+ br->br_perm = old_perm;
+
+ if (!err && wbr && !au_br_writable(new_perm)) {
+ au_kfree_rcu(wbr);
+ br->br_wbr = NULL;
+ }
+
+out:
+ return err;
+}
+
+static int au_wbr_init(struct au_branch *br, struct super_block *sb,
+ int perm)
+{
+ int err;
+ struct kstatfs kst;
+ struct au_wbr *wbr;
+
+ wbr = br->br_wbr;
+ au_rw_init(&wbr->wbr_wh_rwsem);
+ atomic_set(&wbr->wbr_wh_running, 0);
+
+ /*
+ * a limit for rmdir/rename a dir
+ * cf. AUFS_MAX_NAMELEN in include/uapi/linux/aufs_type.h
+ */
+ err = vfs_statfs(&br->br_path, &kst);
+ if (unlikely(err))
+ goto out;
+ err = -EINVAL;
+ if (kst.f_namelen >= NAME_MAX)
+ err = au_br_init_wh(sb, br, perm);
+ else
+ pr_err("%pd(%s), unsupported namelen %ld\n",
+ au_br_dentry(br),
+ au_sbtype(au_br_dentry(br)->d_sb), kst.f_namelen);
+
+out:
+ return err;
+}
+
+/* initialize a new branch */
+static int au_br_init(struct au_branch *br, struct super_block *sb,
+ struct au_opt_add *add)
+{
+ int err;
+ struct au_branch *brbase;
+ struct file *xf;
+ struct inode *h_inode;
+
+ err = 0;
+ br->br_perm = add->perm;
+ br->br_path = add->path; /* set first, path_get() later */
+ spin_lock_init(&br->br_dykey_lock);
+ au_lcnt_init(&br->br_nfiles, /*release*/NULL);
+ au_lcnt_init(&br->br_count, /*release*/NULL);
+ br->br_id = au_new_br_id(sb);
+ AuDebugOn(br->br_id < 0);
+
+ /* always, regardless the given option */
+ err = au_dr_br_init(sb, br, &add->path);
+ if (unlikely(err))
+ goto out_err;
+
+ if (au_br_writable(add->perm)) {
+ err = au_wbr_init(br, sb, add->perm);
+ if (unlikely(err))
+ goto out_err;
+ }
+
+ if (au_opt_test(au_mntflags(sb), XINO)) {
+ brbase = au_sbr(sb, 0);
+ xf = au_xino_file(brbase->br_xino, /*idx*/-1);
+ AuDebugOn(!xf);
+ h_inode = d_inode(add->path.dentry);
+ err = au_xino_init_br(sb, br, h_inode->i_ino, &xf->f_path);
+ if (unlikely(err)) {
+ AuDebugOn(au_xino_file(br->br_xino, /*idx*/-1));
+ goto out_err;
+ }
+ }
+
+ sysaufs_br_init(br);
+ path_get(&br->br_path);
+ goto out; /* success */
+
+out_err:
+ memset(&br->br_path, 0, sizeof(br->br_path));
+out:
+ return err;
+}
+
+static void au_br_do_add_brp(struct au_sbinfo *sbinfo, aufs_bindex_t bindex,
+ struct au_branch *br, aufs_bindex_t bbot,
+ aufs_bindex_t amount)
+{
+ struct au_branch **brp;
+
+ AuRwMustWriteLock(&sbinfo->si_rwsem);
+
+ brp = sbinfo->si_branch + bindex;
+ memmove(brp + 1, brp, sizeof(*brp) * amount);
+ *brp = br;
+ sbinfo->si_bbot++;
+ if (unlikely(bbot < 0))
+ sbinfo->si_bbot = 0;
+}
+
+static void au_br_do_add_hdp(struct au_dinfo *dinfo, aufs_bindex_t bindex,
+ aufs_bindex_t bbot, aufs_bindex_t amount)
+{
+ struct au_hdentry *hdp;
+
+ AuRwMustWriteLock(&dinfo->di_rwsem);
+
+ hdp = au_hdentry(dinfo, bindex);
+ memmove(hdp + 1, hdp, sizeof(*hdp) * amount);
+ au_h_dentry_init(hdp);
+ dinfo->di_bbot++;
+ if (unlikely(bbot < 0))
+ dinfo->di_btop = 0;
+}
+
+static void au_br_do_add_hip(struct au_iinfo *iinfo, aufs_bindex_t bindex,
+ aufs_bindex_t bbot, aufs_bindex_t amount)
+{
+ struct au_hinode *hip;
+
+ AuRwMustWriteLock(&iinfo->ii_rwsem);
+
+ hip = au_hinode(iinfo, bindex);
+ memmove(hip + 1, hip, sizeof(*hip) * amount);
+ au_hinode_init(hip);
+ iinfo->ii_bbot++;
+ if (unlikely(bbot < 0))
+ iinfo->ii_btop = 0;
+}
+
+static void au_br_do_add(struct super_block *sb, struct au_branch *br,
+ aufs_bindex_t bindex)
+{
+ struct dentry *root, *h_dentry;
+ struct inode *root_inode, *h_inode;
+ aufs_bindex_t bbot, amount;
+
+ root = sb->s_root;
+ root_inode = d_inode(root);
+ bbot = au_sbbot(sb);
+ amount = bbot + 1 - bindex;
+ h_dentry = au_br_dentry(br);
+ au_sbilist_lock();
+ au_br_do_add_brp(au_sbi(sb), bindex, br, bbot, amount);
+ au_br_do_add_hdp(au_di(root), bindex, bbot, amount);
+ au_br_do_add_hip(au_ii(root_inode), bindex, bbot, amount);
+ au_set_h_dptr(root, bindex, dget(h_dentry));
+ h_inode = d_inode(h_dentry);
+ au_set_h_iptr(root_inode, bindex, au_igrab(h_inode), /*flags*/0);
+ au_sbilist_unlock();
+}
+
+int au_br_add(struct super_block *sb, struct au_opt_add *add, int remount)
+{
+ int err;
+ aufs_bindex_t bbot, add_bindex;
+ struct dentry *root, *h_dentry;
+ struct inode *root_inode;
+ struct au_branch *add_branch;
+
+ root = sb->s_root;
+ root_inode = d_inode(root);
+ IMustLock(root_inode);
+ IiMustWriteLock(root_inode);
+ err = test_add(sb, add, remount);
+ if (unlikely(err < 0))
+ goto out;
+ if (err) {
+ err = 0;
+ goto out; /* success */
+ }
+
+ bbot = au_sbbot(sb);
+ add_branch = au_br_alloc(sb, bbot + 2, add->perm);
+ err = PTR_ERR(add_branch);
+ if (IS_ERR(add_branch))
+ goto out;
+
+ err = au_br_init(add_branch, sb, add);
+ if (unlikely(err)) {
+ au_br_do_free(add_branch);
+ goto out;
+ }
+
+ add_bindex = add->bindex;
+ sysaufs_brs_del(sb, add_bindex); /* remove successors */
+ au_br_do_add(sb, add_branch, add_bindex);
+ sysaufs_brs_add(sb, add_bindex); /* append successors */
+ dbgaufs_brs_add(sb, add_bindex, /*topdown*/0); /* rename successors */
+
+ h_dentry = add->path.dentry;
+ if (!add_bindex) {
+ au_cpup_attr_all(root_inode, /*force*/1);
+ sb->s_maxbytes = h_dentry->d_sb->s_maxbytes;
+ } else
+ au_add_nlink(root_inode, d_inode(h_dentry));
+
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static unsigned long long au_farray_cb(struct super_block *sb, void *a,
+ unsigned long long max __maybe_unused,
+ void *arg)
+{
+ unsigned long long n;
+ struct file **p, *f;
+ struct hlist_bl_head *files;
+ struct hlist_bl_node *pos;
+ struct au_finfo *finfo;
+
+ n = 0;
+ p = a;
+ files = &au_sbi(sb)->si_files;
+ hlist_bl_lock(files);
+ hlist_bl_for_each_entry(finfo, pos, files, fi_hlist) {
+ f = finfo->fi_file;
+ if (file_count(f)
+ && !special_file(file_inode(f)->i_mode)) {
+ get_file(f);
+ *p++ = f;
+ n++;
+ AuDebugOn(n > max);
+ }
+ }
+ hlist_bl_unlock(files);
+
+ return n;
+}
+
+static struct file **au_farray_alloc(struct super_block *sb,
+ unsigned long long *max)
+{
+ struct au_sbinfo *sbi;
+
+ sbi = au_sbi(sb);
+ *max = au_lcnt_read(&sbi->si_nfiles, /*do_rev*/1);
+ return au_array_alloc(max, au_farray_cb, sb, /*arg*/NULL);
+}
+
+static void au_farray_free(struct file **a, unsigned long long max)
+{
+ unsigned long long ull;
+
+ for (ull = 0; ull < max; ull++)
+ if (a[ull])
+ fput(a[ull]);
+ kvfree(a);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * delete a branch
+ */
+
+/* to show the line number, do not make it inlined function */
+#define AuVerbose(do_info, fmt, ...) do { \
+ if (do_info) \
+ pr_info(fmt, ##__VA_ARGS__); \
+} while (0)
+
+static int au_test_ibusy(struct inode *inode, aufs_bindex_t btop,
+ aufs_bindex_t bbot)
+{
+ return (inode && !S_ISDIR(inode->i_mode)) || btop == bbot;
+}
+
+static int au_test_dbusy(struct dentry *dentry, aufs_bindex_t btop,
+ aufs_bindex_t bbot)
+{
+ return au_test_ibusy(d_inode(dentry), btop, bbot);
+}
+
+/*
+ * test if the branch is deletable or not.
+ */
+static int test_dentry_busy(struct dentry *root, aufs_bindex_t bindex,
+ unsigned int sigen, const unsigned int verbose)
+{
+ int err, i, j, ndentry;
+ aufs_bindex_t btop, bbot;
+ struct au_dcsub_pages dpages;
+ struct au_dpage *dpage;
+ struct dentry *d;
+
+ err = au_dpages_init(&dpages, GFP_NOFS);
+ if (unlikely(err))
+ goto out;
+ err = au_dcsub_pages(&dpages, root, NULL, NULL);
+ if (unlikely(err))
+ goto out_dpages;
+
+ for (i = 0; !err && i < dpages.ndpage; i++) {
+ dpage = dpages.dpages + i;
+ ndentry = dpage->ndentry;
+ for (j = 0; !err && j < ndentry; j++) {
+ d = dpage->dentries[j];
+ AuDebugOn(au_dcount(d) <= 0);
+ if (!au_digen_test(d, sigen)) {
+ di_read_lock_child(d, AuLock_IR);
+ if (unlikely(au_dbrange_test(d))) {
+ di_read_unlock(d, AuLock_IR);
+ continue;
+ }
+ } else {
+ di_write_lock_child(d);
+ if (unlikely(au_dbrange_test(d))) {
+ di_write_unlock(d);
+ continue;
+ }
+ err = au_reval_dpath(d, sigen);
+ if (!err)
+ di_downgrade_lock(d, AuLock_IR);
+ else {
+ di_write_unlock(d);
+ break;
+ }
+ }
+
+ /* AuDbgDentry(d); */
+ btop = au_dbtop(d);
+ bbot = au_dbbot(d);
+ if (btop <= bindex
+ && bindex <= bbot
+ && au_h_dptr(d, bindex)
+ && au_test_dbusy(d, btop, bbot)) {
+ err = -EBUSY;
+ AuVerbose(verbose, "busy %pd\n", d);
+ AuDbgDentry(d);
+ }
+ di_read_unlock(d, AuLock_IR);
+ }
+ }
+
+out_dpages:
+ au_dpages_free(&dpages);
+out:
+ return err;
+}
+
+static int test_inode_busy(struct super_block *sb, aufs_bindex_t bindex,
+ unsigned int sigen, const unsigned int verbose)
+{
+ int err;
+ unsigned long long max, ull;
+ struct inode *i, **array;
+ aufs_bindex_t btop, bbot;
+
+ array = au_iarray_alloc(sb, &max);
+ err = PTR_ERR(array);
+ if (IS_ERR(array))
+ goto out;
+
+ err = 0;
+ AuDbg("b%d\n", bindex);
+ for (ull = 0; !err && ull < max; ull++) {
+ i = array[ull];
+ if (unlikely(!i))
+ break;
+ if (i->i_ino == AUFS_ROOT_INO)
+ continue;
+
+ /* AuDbgInode(i); */
+ if (au_iigen(i, NULL) == sigen)
+ ii_read_lock_child(i);
+ else {
+ ii_write_lock_child(i);
+ err = au_refresh_hinode_self(i);
+ au_iigen_dec(i);
+ if (!err)
+ ii_downgrade_lock(i);
+ else {
+ ii_write_unlock(i);
+ break;
+ }
+ }
+
+ btop = au_ibtop(i);
+ bbot = au_ibbot(i);
+ if (btop <= bindex
+ && bindex <= bbot
+ && au_h_iptr(i, bindex)
+ && au_test_ibusy(i, btop, bbot)) {
+ err = -EBUSY;
+ AuVerbose(verbose, "busy i%lu\n", i->i_ino);
+ AuDbgInode(i);
+ }
+ ii_read_unlock(i);
+ }
+ au_iarray_free(array, max);
+
+out:
+ return err;
+}
+
+static int test_children_busy(struct dentry *root, aufs_bindex_t bindex,
+ const unsigned int verbose)
+{
+ int err;
+ unsigned int sigen;
+
+ sigen = au_sigen(root->d_sb);
+ DiMustNoWaiters(root);
+ IiMustNoWaiters(d_inode(root));
+ di_write_unlock(root);
+ err = test_dentry_busy(root, bindex, sigen, verbose);
+ if (!err)
+ err = test_inode_busy(root->d_sb, bindex, sigen, verbose);
+ di_write_lock_child(root); /* aufs_write_lock() calls ..._child() */
+
+ return err;
+}
+
+static int test_dir_busy(struct file *file, aufs_bindex_t br_id,
+ struct file **to_free, int *idx)
+{
+ int err;
+ unsigned char matched, root;
+ aufs_bindex_t bindex, bbot;
+ struct au_fidir *fidir;
+ struct au_hfile *hfile;
+
+ err = 0;
+ root = IS_ROOT(file->f_path.dentry);
+ if (root) {
+ get_file(file);
+ to_free[*idx] = file;
+ (*idx)++;
+ goto out;
+ }
+
+ matched = 0;
+ fidir = au_fi(file)->fi_hdir;
+ AuDebugOn(!fidir);
+ bbot = au_fbbot_dir(file);
+ for (bindex = au_fbtop(file); bindex <= bbot; bindex++) {
+ hfile = fidir->fd_hfile + bindex;
+ if (!hfile->hf_file)
+ continue;
+
+ if (hfile->hf_br->br_id == br_id) {
+ matched = 1;
+ break;
+ }
+ }
+ if (matched)
+ err = -EBUSY;
+
+out:
+ return err;
+}
+
+static int test_file_busy(struct super_block *sb, aufs_bindex_t br_id,
+ struct file **to_free, int opened)
+{
+ int err, idx;
+ unsigned long long ull, max;
+ aufs_bindex_t btop;
+ struct file *file, **array;
+ struct dentry *root;
+ struct au_hfile *hfile;
+
+ array = au_farray_alloc(sb, &max);
+ err = PTR_ERR(array);
+ if (IS_ERR(array))
+ goto out;
+
+ err = 0;
+ idx = 0;
+ root = sb->s_root;
+ di_write_unlock(root);
+ for (ull = 0; ull < max; ull++) {
+ file = array[ull];
+ if (unlikely(!file))
+ break;
+
+ /* AuDbg("%pD\n", file); */
+ fi_read_lock(file);
+ btop = au_fbtop(file);
+ if (!d_is_dir(file->f_path.dentry)) {
+ hfile = &au_fi(file)->fi_htop;
+ if (hfile->hf_br->br_id == br_id)
+ err = -EBUSY;
+ } else
+ err = test_dir_busy(file, br_id, to_free, &idx);
+ fi_read_unlock(file);
+ if (unlikely(err))
+ break;
+ }
+ di_write_lock_child(root);
+ au_farray_free(array, max);
+ AuDebugOn(idx > opened);
+
+out:
+ return err;
+}
+
+static void br_del_file(struct file **to_free, unsigned long long opened,
+ aufs_bindex_t br_id)
+{
+ unsigned long long ull;
+ aufs_bindex_t bindex, btop, bbot, bfound;
+ struct file *file;
+ struct au_fidir *fidir;
+ struct au_hfile *hfile;
+
+ for (ull = 0; ull < opened; ull++) {
+ file = to_free[ull];
+ if (unlikely(!file))
+ break;
+
+ /* AuDbg("%pD\n", file); */
+ AuDebugOn(!d_is_dir(file->f_path.dentry));
+ bfound = -1;
+ fidir = au_fi(file)->fi_hdir;
+ AuDebugOn(!fidir);
+ fi_write_lock(file);
+ btop = au_fbtop(file);
+ bbot = au_fbbot_dir(file);
+ for (bindex = btop; bindex <= bbot; bindex++) {
+ hfile = fidir->fd_hfile + bindex;
+ if (!hfile->hf_file)
+ continue;
+
+ if (hfile->hf_br->br_id == br_id) {
+ bfound = bindex;
+ break;
+ }
+ }
+ AuDebugOn(bfound < 0);
+ au_set_h_fptr(file, bfound, NULL);
+ if (bfound == btop) {
+ for (btop++; btop <= bbot; btop++)
+ if (au_hf_dir(file, btop)) {
+ au_set_fbtop(file, btop);
+ break;
+ }
+ }
+ fi_write_unlock(file);
+ }
+}
+
+static void au_br_do_del_brp(struct au_sbinfo *sbinfo,
+ const aufs_bindex_t bindex,
+ const aufs_bindex_t bbot)
+{
+ struct au_branch **brp, **p;
+
+ AuRwMustWriteLock(&sbinfo->si_rwsem);
+
+ brp = sbinfo->si_branch + bindex;
+ if (bindex < bbot)
+ memmove(brp, brp + 1, sizeof(*brp) * (bbot - bindex));
+ sbinfo->si_branch[0 + bbot] = NULL;
+ sbinfo->si_bbot--;
+
+ p = au_krealloc(sbinfo->si_branch, sizeof(*p) * bbot, AuGFP_SBILIST,
+ /*may_shrink*/1);
+ if (p)
+ sbinfo->si_branch = p;
+ /* harmless error */
+}
+
+static void au_br_do_del_hdp(struct au_dinfo *dinfo, const aufs_bindex_t bindex,
+ const aufs_bindex_t bbot)
+{
+ struct au_hdentry *hdp, *p;
+
+ AuRwMustWriteLock(&dinfo->di_rwsem);
+
+ hdp = au_hdentry(dinfo, bindex);
+ if (bindex < bbot)
+ memmove(hdp, hdp + 1, sizeof(*hdp) * (bbot - bindex));
+ /* au_h_dentry_init(au_hdentry(dinfo, bbot); */
+ dinfo->di_bbot--;
+
+ p = au_krealloc(dinfo->di_hdentry, sizeof(*p) * bbot, AuGFP_SBILIST,
+ /*may_shrink*/1);
+ if (p)
+ dinfo->di_hdentry = p;
+ /* harmless error */
+}
+
+static void au_br_do_del_hip(struct au_iinfo *iinfo, const aufs_bindex_t bindex,
+ const aufs_bindex_t bbot)
+{
+ struct au_hinode *hip, *p;
+
+ AuRwMustWriteLock(&iinfo->ii_rwsem);
+
+ hip = au_hinode(iinfo, bindex);
+ if (bindex < bbot)
+ memmove(hip, hip + 1, sizeof(*hip) * (bbot - bindex));
+ /* au_hinode_init(au_hinode(iinfo, bbot)); */
+ iinfo->ii_bbot--;
+
+ p = au_krealloc(iinfo->ii_hinode, sizeof(*p) * bbot, AuGFP_SBILIST,
+ /*may_shrink*/1);
+ if (p)
+ iinfo->ii_hinode = p;
+ /* harmless error */
+}
+
+static void au_br_do_del(struct super_block *sb, aufs_bindex_t bindex,
+ struct au_branch *br)
+{
+ aufs_bindex_t bbot;
+ struct au_sbinfo *sbinfo;
+ struct dentry *root, *h_root;
+ struct inode *inode, *h_inode;
+ struct au_hinode *hinode;
+
+ SiMustWriteLock(sb);
+
+ root = sb->s_root;
+ inode = d_inode(root);
+ sbinfo = au_sbi(sb);
+ bbot = sbinfo->si_bbot;
+
+ h_root = au_h_dptr(root, bindex);
+ hinode = au_hi(inode, bindex);
+ h_inode = au_igrab(hinode->hi_inode);
+ au_hiput(hinode);
+
+ au_sbilist_lock();
+ au_br_do_del_brp(sbinfo, bindex, bbot);
+ au_br_do_del_hdp(au_di(root), bindex, bbot);
+ au_br_do_del_hip(au_ii(inode), bindex, bbot);
+ au_sbilist_unlock();
+
+ /* ignore an error */
+ au_dr_br_fin(sb, br); /* always, regardless the mount option */
+
+ dput(h_root);
+ iput(h_inode);
+ au_br_do_free(br);
+}
+
+static unsigned long long empty_cb(struct super_block *sb, void *array,
+ unsigned long long max, void *arg)
+{
+ return max;
+}
+
+int au_br_del(struct super_block *sb, struct au_opt_del *del, int remount)
+{
+ int err, rerr, i;
+ unsigned long long opened;
+ unsigned int mnt_flags;
+ aufs_bindex_t bindex, bbot, br_id;
+ unsigned char do_wh, verbose;
+ struct au_branch *br;
+ struct au_wbr *wbr;
+ struct dentry *root;
+ struct file **to_free;
+
+ err = 0;
+ opened = 0;
+ to_free = NULL;
+ root = sb->s_root;
+ bindex = au_find_dbindex(root, del->h_path.dentry);
+ if (bindex < 0) {
+ if (remount)
+ goto out; /* success */
+ err = -ENOENT;
+ pr_err("%s no such branch\n", del->pathname);
+ goto out;
+ }
+ AuDbg("bindex b%d\n", bindex);
+
+ err = -EBUSY;
+ mnt_flags = au_mntflags(sb);
+ verbose = !!au_opt_test(mnt_flags, VERBOSE);
+ bbot = au_sbbot(sb);
+ if (unlikely(!bbot)) {
+ AuVerbose(verbose, "no more branches left\n");
+ goto out;
+ }
+
+ br = au_sbr(sb, bindex);
+ AuDebugOn(!path_equal(&br->br_path, &del->h_path));
+ if (unlikely(au_lcnt_read(&br->br_count, /*do_rev*/1))) {
+ AuVerbose(verbose, "br %pd2 is busy now\n", del->h_path.dentry);
+ goto out;
+ }
+
+ br_id = br->br_id;
+ opened = au_lcnt_read(&br->br_nfiles, /*do_rev*/1);
+ if (unlikely(opened)) {
+ to_free = au_array_alloc(&opened, empty_cb, sb, NULL);
+ err = PTR_ERR(to_free);
+ if (IS_ERR(to_free))
+ goto out;
+
+ err = test_file_busy(sb, br_id, to_free, opened);
+ if (unlikely(err)) {
+ AuVerbose(verbose, "%llu file(s) opened\n", opened);
+ goto out;
+ }
+ }
+
+ wbr = br->br_wbr;
+ do_wh = wbr && (wbr->wbr_whbase || wbr->wbr_plink || wbr->wbr_orph);
+ if (do_wh) {
+ /* instead of WbrWhMustWriteLock(wbr) */
+ SiMustWriteLock(sb);
+ for (i = 0; i < AuBrWh_Last; i++) {
+ dput(wbr->wbr_wh[i]);
+ wbr->wbr_wh[i] = NULL;
+ }
+ }
+
+ err = test_children_busy(root, bindex, verbose);
+ if (unlikely(err)) {
+ if (do_wh)
+ goto out_wh;
+ goto out;
+ }
+
+ err = 0;
+ if (to_free) {
+ /*
+ * now we confirmed the branch is deletable.
+ * let's free the remaining opened dirs on the branch.
+ */
+ di_write_unlock(root);
+ br_del_file(to_free, opened, br_id);
+ di_write_lock_child(root);
+ }
+
+ sysaufs_brs_del(sb, bindex); /* remove successors */
+ dbgaufs_xino_del(br); /* remove one */
+ au_br_do_del(sb, bindex, br);
+ sysaufs_brs_add(sb, bindex); /* append successors */
+ dbgaufs_brs_add(sb, bindex, /*topdown*/1); /* rename successors */
+
+ if (!bindex) {
+ au_cpup_attr_all(d_inode(root), /*force*/1);
+ sb->s_maxbytes = au_sbr_sb(sb, 0)->s_maxbytes;
+ } else
+ au_sub_nlink(d_inode(root), d_inode(del->h_path.dentry));
+ if (au_opt_test(mnt_flags, PLINK))
+ au_plink_half_refresh(sb, br_id);
+
+ goto out; /* success */
+
+out_wh:
+ /* revert */
+ rerr = au_br_init_wh(sb, br, br->br_perm);
+ if (rerr)
+ pr_warn("failed re-creating base whiteout, %s. (%d)\n",
+ del->pathname, rerr);
+out:
+ if (to_free)
+ au_farray_free(to_free, opened);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_ibusy(struct super_block *sb, struct aufs_ibusy __user *arg)
+{
+ int err;
+ aufs_bindex_t btop, bbot;
+ struct aufs_ibusy ibusy;
+ struct inode *inode, *h_inode;
+
+ err = -EPERM;
+ if (unlikely(!capable(CAP_SYS_ADMIN)))
+ goto out;
+
+ err = copy_from_user(&ibusy, arg, sizeof(ibusy));
+ if (!err)
+ /* VERIFY_WRITE */
+ err = !access_ok(&arg->h_ino, sizeof(arg->h_ino));
+ if (unlikely(err)) {
+ err = -EFAULT;
+ AuTraceErr(err);
+ goto out;
+ }
+
+ err = -EINVAL;
+ si_read_lock(sb, AuLock_FLUSH);
+ if (unlikely(ibusy.bindex < 0 || ibusy.bindex > au_sbbot(sb)))
+ goto out_unlock;
+
+ err = 0;
+ ibusy.h_ino = 0; /* invalid */
+ inode = ilookup(sb, ibusy.ino);
+ if (!inode
+ || inode->i_ino == AUFS_ROOT_INO
+ || au_is_bad_inode(inode))
+ goto out_unlock;
+
+ ii_read_lock_child(inode);
+ btop = au_ibtop(inode);
+ bbot = au_ibbot(inode);
+ if (btop <= ibusy.bindex && ibusy.bindex <= bbot) {
+ h_inode = au_h_iptr(inode, ibusy.bindex);
+ if (h_inode && au_test_ibusy(inode, btop, bbot))
+ ibusy.h_ino = h_inode->i_ino;
+ }
+ ii_read_unlock(inode);
+ iput(inode);
+
+out_unlock:
+ si_read_unlock(sb);
+ if (!err) {
+ err = __put_user(ibusy.h_ino, &arg->h_ino);
+ if (unlikely(err)) {
+ err = -EFAULT;
+ AuTraceErr(err);
+ }
+ }
+out:
+ return err;
+}
+
+long au_ibusy_ioctl(struct file *file, unsigned long arg)
+{
+ return au_ibusy(file->f_path.dentry->d_sb, (void __user *)arg);
+}
+
+#ifdef CONFIG_COMPAT
+long au_ibusy_compat_ioctl(struct file *file, unsigned long arg)
+{
+ return au_ibusy(file->f_path.dentry->d_sb, compat_ptr(arg));
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * change a branch permission
+ */
+
+static void au_warn_ima(void)
+{
+#ifdef CONFIG_IMA
+ /* since it doesn't support mark_files_ro() */
+ AuWarn1("RW -> RO makes IMA to produce wrong message\n");
+#endif
+}
+
+static int do_need_sigen_inc(int a, int b)
+{
+ return au_br_whable(a) && !au_br_whable(b);
+}
+
+static int need_sigen_inc(int old, int new)
+{
+ return do_need_sigen_inc(old, new)
+ || do_need_sigen_inc(new, old);
+}
+
+static int au_br_mod_files_ro(struct super_block *sb, aufs_bindex_t bindex)
+{
+ int err, do_warn;
+ unsigned int mnt_flags;
+ unsigned long long ull, max;
+ aufs_bindex_t br_id;
+ unsigned char verbose, writer;
+ struct file *file, *hf, **array;
+ struct au_hfile *hfile;
+ struct inode *h_inode;
+
+ mnt_flags = au_mntflags(sb);
+ verbose = !!au_opt_test(mnt_flags, VERBOSE);
+
+ array = au_farray_alloc(sb, &max);
+ err = PTR_ERR(array);
+ if (IS_ERR(array))
+ goto out;
+
+ do_warn = 0;
+ br_id = au_sbr_id(sb, bindex);
+ for (ull = 0; ull < max; ull++) {
+ file = array[ull];
+ if (unlikely(!file))
+ break;
+
+ /* AuDbg("%pD\n", file); */
+ fi_read_lock(file);
+ if (unlikely(au_test_mmapped(file))) {
+ err = -EBUSY;
+ AuVerbose(verbose, "mmapped %pD\n", file);
+ AuDbgFile(file);
+ FiMustNoWaiters(file);
+ fi_read_unlock(file);
+ goto out_array;
+ }
+
+ hfile = &au_fi(file)->fi_htop;
+ hf = hfile->hf_file;
+ if (!d_is_reg(file->f_path.dentry)
+ || !(file->f_mode & FMODE_WRITE)
+ || hfile->hf_br->br_id != br_id
+ || !(hf->f_mode & FMODE_WRITE))
+ array[ull] = NULL;
+ else {
+ do_warn = 1;
+ get_file(file);
+ }
+
+ FiMustNoWaiters(file);
+ fi_read_unlock(file);
+ fput(file);
+ }
+
+ err = 0;
+ if (do_warn)
+ au_warn_ima();
+
+ for (ull = 0; ull < max; ull++) {
+ file = array[ull];
+ if (!file)
+ continue;
+
+ /* todo: already flushed? */
+ /*
+ * fs/super.c:mark_files_ro() is gone, but aufs keeps its
+ * approach which resets f_mode and calls mnt_drop_write() and
+ * file_release_write() for each file, because the branch
+ * attribute in aufs world is totally different from the native
+ * fs rw/ro mode.
+ */
+ /* fi_read_lock(file); */
+ hfile = &au_fi(file)->fi_htop;
+ hf = hfile->hf_file;
+ /* fi_read_unlock(file); */
+ spin_lock(&hf->f_lock);
+ writer = !!(hf->f_mode & FMODE_WRITER);
+ hf->f_mode &= ~(FMODE_WRITE | FMODE_WRITER);
+ spin_unlock(&hf->f_lock);
+ if (writer) {
+ h_inode = file_inode(hf);
+ put_write_access(h_inode);
+ __mnt_drop_write(hf->f_path.mnt);
+ if ((hf->f_mode & (FMODE_READ | FMODE_WRITE))
+ == FMODE_READ)
+ i_readcount_inc(h_inode);
+ }
+ }
+
+out_array:
+ au_farray_free(array, max);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+int au_br_mod(struct super_block *sb, struct au_opt_mod *mod, int remount,
+ int *do_refresh)
+{
+ int err, rerr;
+ aufs_bindex_t bindex;
+ struct dentry *root;
+ struct au_branch *br;
+ struct au_br_fhsm *bf;
+
+ root = sb->s_root;
+ bindex = au_find_dbindex(root, mod->h_root);
+ if (bindex < 0) {
+ if (remount)
+ return 0; /* success */
+ err = -ENOENT;
+ pr_err("%s no such branch\n", mod->path);
+ goto out;
+ }
+ AuDbg("bindex b%d\n", bindex);
+
+ err = test_br(d_inode(mod->h_root), mod->perm, mod->path);
+ if (unlikely(err))
+ goto out;
+
+ br = au_sbr(sb, bindex);
+ AuDebugOn(mod->h_root != au_br_dentry(br));
+ if (br->br_perm == mod->perm)
+ return 0; /* success */
+
+ /* pre-allocate for non-fhsm --> fhsm */
+ bf = NULL;
+ if (!au_br_fhsm(br->br_perm) && au_br_fhsm(mod->perm)) {
+ err = au_fhsm_br_alloc(br);
+ if (unlikely(err))
+ goto out;
+ bf = br->br_fhsm;
+ br->br_fhsm = NULL;
+ }
+
+ if (au_br_writable(br->br_perm)) {
+ /* remove whiteout base */
+ err = au_br_init_wh(sb, br, mod->perm);
+ if (unlikely(err))
+ goto out_bf;
+
+ if (!au_br_writable(mod->perm)) {
+ /* rw --> ro, file might be mmapped */
+ DiMustNoWaiters(root);
+ IiMustNoWaiters(d_inode(root));
+ di_write_unlock(root);
+ err = au_br_mod_files_ro(sb, bindex);
+ /* aufs_write_lock() calls ..._child() */
+ di_write_lock_child(root);
+
+ if (unlikely(err)) {
+ rerr = -ENOMEM;
+ br->br_wbr = kzalloc(sizeof(*br->br_wbr),
+ GFP_NOFS);
+ if (br->br_wbr)
+ rerr = au_wbr_init(br, sb, br->br_perm);
+ if (unlikely(rerr)) {
+ AuIOErr("nested error %d (%d)\n",
+ rerr, err);
+ br->br_perm = mod->perm;
+ }
+ }
+ }
+ } else if (au_br_writable(mod->perm)) {
+ /* ro --> rw */
+ err = -ENOMEM;
+ br->br_wbr = kzalloc(sizeof(*br->br_wbr), GFP_NOFS);
+ if (br->br_wbr) {
+ err = au_wbr_init(br, sb, mod->perm);
+ if (unlikely(err)) {
+ au_kfree_rcu(br->br_wbr);
+ br->br_wbr = NULL;
+ }
+ }
+ }
+ if (unlikely(err))
+ goto out_bf;
+
+ if (au_br_fhsm(br->br_perm)) {
+ if (!au_br_fhsm(mod->perm)) {
+ /* fhsm --> non-fhsm */
+ au_br_fhsm_fin(br->br_fhsm);
+ au_kfree_rcu(br->br_fhsm);
+ br->br_fhsm = NULL;
+ }
+ } else if (au_br_fhsm(mod->perm))
+ /* non-fhsm --> fhsm */
+ br->br_fhsm = bf;
+
+ *do_refresh |= need_sigen_inc(br->br_perm, mod->perm);
+ br->br_perm = mod->perm;
+ goto out; /* success */
+
+out_bf:
+ au_kfree_try_rcu(bf);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_br_stfs(struct au_branch *br, struct aufs_stfs *stfs)
+{
+ int err;
+ struct kstatfs kstfs;
+
+ err = vfs_statfs(&br->br_path, &kstfs);
+ if (!err) {
+ stfs->f_blocks = kstfs.f_blocks;
+ stfs->f_bavail = kstfs.f_bavail;
+ stfs->f_files = kstfs.f_files;
+ stfs->f_ffree = kstfs.f_ffree;
+ }
+
+ return err;
+}
diff --git a/fs/aufs/branch.h b/fs/aufs/branch.h
new file mode 100644
index 0000000000..012459ad57
--- /dev/null
+++ b/fs/aufs/branch.h
@@ -0,0 +1,366 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * branch filesystems and xino for them
+ */
+
+#ifndef __AUFS_BRANCH_H__
+#define __AUFS_BRANCH_H__
+
+#ifdef __KERNEL__
+
+#include <linux/mount.h>
+#include "dirren.h"
+#include "dynop.h"
+#include "lcnt.h"
+#include "rwsem.h"
+#include "super.h"
+
+/* ---------------------------------------------------------------------- */
+
+/* a xino file */
+struct au_xino {
+ struct file **xi_file;
+ unsigned int xi_nfile;
+
+ struct {
+ spinlock_t spin;
+ ino_t *array;
+ int total;
+ /* reserved for future use */
+ /* unsigned long *bitmap; */
+ wait_queue_head_t wqh;
+ } xi_nondir;
+
+ struct mutex xi_mtx; /* protects xi_file array */
+ struct hlist_bl_head xi_writing;
+
+ atomic_t xi_truncating;
+
+ struct kref xi_kref;
+};
+
+/* File-based Hierarchical Storage Management */
+struct au_br_fhsm {
+#ifdef CONFIG_AUFS_FHSM
+ struct mutex bf_lock;
+ unsigned long bf_jiffy;
+ struct aufs_stfs bf_stfs;
+ int bf_readable;
+#endif
+};
+
+/* members for writable branch only */
+enum {AuBrWh_BASE, AuBrWh_PLINK, AuBrWh_ORPH, AuBrWh_Last};
+struct au_wbr {
+ struct au_rwsem wbr_wh_rwsem;
+ struct dentry *wbr_wh[AuBrWh_Last];
+ atomic_t wbr_wh_running;
+#define wbr_whbase wbr_wh[AuBrWh_BASE] /* whiteout base */
+#define wbr_plink wbr_wh[AuBrWh_PLINK] /* pseudo-link dir */
+#define wbr_orph wbr_wh[AuBrWh_ORPH] /* dir for orphans */
+
+ /* mfs mode */
+ unsigned long long wbr_bytes;
+};
+
+/* ext2 has 3 types of operations at least, ext3 has 4 */
+#define AuBrDynOp (AuDyLast * 4)
+
+#ifdef CONFIG_AUFS_HFSNOTIFY
+/* support for asynchronous destruction */
+struct au_br_hfsnotify {
+ struct fsnotify_group *hfsn_group;
+};
+#endif
+
+/* sysfs entries */
+struct au_brsysfs {
+ char name[16];
+ struct attribute attr;
+};
+
+enum {
+ AuBrSysfs_BR,
+ AuBrSysfs_BRID,
+ AuBrSysfs_Last
+};
+
+/* protected by superblock rwsem */
+struct au_branch {
+ struct au_xino *br_xino;
+
+ aufs_bindex_t br_id;
+
+ int br_perm;
+ struct path br_path;
+ spinlock_t br_dykey_lock;
+ struct au_dykey *br_dykey[AuBrDynOp];
+ au_lcnt_t br_nfiles; /* opened files */
+ au_lcnt_t br_count; /* in-use for other */
+
+ struct au_wbr *br_wbr;
+ struct au_br_fhsm *br_fhsm;
+
+#ifdef CONFIG_AUFS_HFSNOTIFY
+ struct au_br_hfsnotify *br_hfsn;
+#endif
+
+#ifdef CONFIG_SYSFS
+ /* entries under sysfs per mount-point */
+ struct au_brsysfs br_sysfs[AuBrSysfs_Last];
+#endif
+
+#ifdef CONFIG_DEBUG_FS
+ struct dentry *br_dbgaufs; /* xino */
+#endif
+
+ struct au_dr_br br_dirren;
+};
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct vfsmount *au_br_mnt(struct au_branch *br)
+{
+ return br->br_path.mnt;
+}
+
+static inline struct dentry *au_br_dentry(struct au_branch *br)
+{
+ return br->br_path.dentry;
+}
+
+static inline struct super_block *au_br_sb(struct au_branch *br)
+{
+ return au_br_mnt(br)->mnt_sb;
+}
+
+static inline int au_br_rdonly(struct au_branch *br)
+{
+ return (sb_rdonly(au_br_sb(br))
+ || !au_br_writable(br->br_perm))
+ ? -EROFS : 0;
+}
+
+static inline int au_br_hnotifyable(int brperm __maybe_unused)
+{
+#ifdef CONFIG_AUFS_HNOTIFY
+ return !(brperm & AuBrPerm_RR);
+#else
+ return 0;
+#endif
+}
+
+static inline int au_br_test_oflag(int oflag, struct au_branch *br)
+{
+ int err, exec_flag;
+
+ err = 0;
+ exec_flag = oflag & __FMODE_EXEC;
+ if (unlikely(exec_flag && path_noexec(&br->br_path)))
+ err = -EACCES;
+
+ return err;
+}
+
+static inline void au_xino_get(struct au_branch *br)
+{
+ struct au_xino *xi;
+
+ xi = br->br_xino;
+ if (xi)
+ kref_get(&xi->xi_kref);
+}
+
+static inline int au_xino_count(struct au_branch *br)
+{
+ int v;
+ struct au_xino *xi;
+
+ v = 0;
+ xi = br->br_xino;
+ if (xi)
+ v = kref_read(&xi->xi_kref);
+
+ return v;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* branch.c */
+struct au_sbinfo;
+void au_br_free(struct au_sbinfo *sinfo);
+int au_br_index(struct super_block *sb, aufs_bindex_t br_id);
+struct au_opt_add;
+int au_br_add(struct super_block *sb, struct au_opt_add *add, int remount);
+struct au_opt_del;
+int au_br_del(struct super_block *sb, struct au_opt_del *del, int remount);
+long au_ibusy_ioctl(struct file *file, unsigned long arg);
+#ifdef CONFIG_COMPAT
+long au_ibusy_compat_ioctl(struct file *file, unsigned long arg);
+#endif
+struct au_opt_mod;
+int au_br_mod(struct super_block *sb, struct au_opt_mod *mod, int remount,
+ int *do_refresh);
+struct aufs_stfs;
+int au_br_stfs(struct au_branch *br, struct aufs_stfs *stfs);
+
+/* xino.c */
+static const loff_t au_loff_max = LLONG_MAX;
+
+aufs_bindex_t au_xi_root(struct super_block *sb, struct dentry *dentry);
+struct file *au_xino_create(struct super_block *sb, char *fpath, int silent,
+ int wbrtop);
+struct file *au_xino_create2(struct super_block *sb, struct path *base,
+ struct file *copy_src);
+struct au_xi_new {
+ struct au_xino *xi; /* switch between xino and xigen */
+ int idx;
+ struct path *base;
+ struct file *copy_src;
+};
+struct file *au_xi_new(struct super_block *sb, struct au_xi_new *xinew);
+
+int au_xino_read(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+ ino_t *ino);
+int au_xino_write(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+ ino_t ino);
+ssize_t xino_fread(vfs_readf_t func, struct file *file, void *buf, size_t size,
+ loff_t *pos);
+ssize_t xino_fwrite(vfs_writef_t func, struct file *file, void *buf,
+ size_t size, loff_t *pos);
+
+int au_xib_trunc(struct super_block *sb);
+int au_xino_trunc(struct super_block *sb, aufs_bindex_t bindex, int idx_begin);
+
+struct au_xino *au_xino_alloc(unsigned int nfile);
+int au_xino_put(struct au_branch *br);
+struct file *au_xino_file1(struct au_xino *xi);
+
+struct au_opt_xino;
+void au_xino_clr(struct super_block *sb);
+int au_xino_set(struct super_block *sb, struct au_opt_xino *xiopt, int remount);
+struct file *au_xino_def(struct super_block *sb);
+int au_xino_init_br(struct super_block *sb, struct au_branch *br, ino_t hino,
+ struct path *base);
+
+ino_t au_xino_new_ino(struct super_block *sb);
+void au_xino_delete_inode(struct inode *inode, const int unlinked);
+
+void au_xinondir_leave(struct super_block *sb, aufs_bindex_t bindex,
+ ino_t h_ino, int idx);
+int au_xinondir_enter(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+ int *idx);
+
+int au_xino_path(struct seq_file *seq, struct file *file);
+
+/* ---------------------------------------------------------------------- */
+
+/* @idx is signed to accept -1 meaning the first file */
+static inline struct file *au_xino_file(struct au_xino *xi, int idx)
+{
+ struct file *file;
+
+ file = NULL;
+ if (!xi)
+ goto out;
+
+ if (idx >= 0) {
+ if (idx < xi->xi_nfile)
+ file = xi->xi_file[idx];
+ } else
+ file = au_xino_file1(xi);
+
+out:
+ return file;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* Superblock to branch */
+static inline
+aufs_bindex_t au_sbr_id(struct super_block *sb, aufs_bindex_t bindex)
+{
+ return au_sbr(sb, bindex)->br_id;
+}
+
+static inline
+struct vfsmount *au_sbr_mnt(struct super_block *sb, aufs_bindex_t bindex)
+{
+ return au_br_mnt(au_sbr(sb, bindex));
+}
+
+static inline
+struct super_block *au_sbr_sb(struct super_block *sb, aufs_bindex_t bindex)
+{
+ return au_br_sb(au_sbr(sb, bindex));
+}
+
+static inline int au_sbr_perm(struct super_block *sb, aufs_bindex_t bindex)
+{
+ return au_sbr(sb, bindex)->br_perm;
+}
+
+static inline int au_sbr_whable(struct super_block *sb, aufs_bindex_t bindex)
+{
+ return au_br_whable(au_sbr_perm(sb, bindex));
+}
+
+/* ---------------------------------------------------------------------- */
+
+#define wbr_wh_read_lock(wbr) au_rw_read_lock(&(wbr)->wbr_wh_rwsem)
+#define wbr_wh_write_lock(wbr) au_rw_write_lock(&(wbr)->wbr_wh_rwsem)
+#define wbr_wh_read_trylock(wbr) au_rw_read_trylock(&(wbr)->wbr_wh_rwsem)
+#define wbr_wh_write_trylock(wbr) au_rw_write_trylock(&(wbr)->wbr_wh_rwsem)
+/*
+#define wbr_wh_read_trylock_nested(wbr) \
+ au_rw_read_trylock_nested(&(wbr)->wbr_wh_rwsem)
+#define wbr_wh_write_trylock_nested(wbr) \
+ au_rw_write_trylock_nested(&(wbr)->wbr_wh_rwsem)
+*/
+
+#define wbr_wh_read_unlock(wbr) au_rw_read_unlock(&(wbr)->wbr_wh_rwsem)
+#define wbr_wh_write_unlock(wbr) au_rw_write_unlock(&(wbr)->wbr_wh_rwsem)
+#define wbr_wh_downgrade_lock(wbr) au_rw_dgrade_lock(&(wbr)->wbr_wh_rwsem)
+
+#define WbrWhMustNoWaiters(wbr) AuRwMustNoWaiters(&(wbr)->wbr_wh_rwsem)
+#define WbrWhMustAnyLock(wbr) AuRwMustAnyLock(&(wbr)->wbr_wh_rwsem)
+#define WbrWhMustWriteLock(wbr) AuRwMustWriteLock(&(wbr)->wbr_wh_rwsem)
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_FHSM
+static inline void au_br_fhsm_init(struct au_br_fhsm *brfhsm)
+{
+ mutex_init(&brfhsm->bf_lock);
+ brfhsm->bf_jiffy = 0;
+ brfhsm->bf_readable = 0;
+}
+
+static inline void au_br_fhsm_fin(struct au_br_fhsm *brfhsm)
+{
+ mutex_destroy(&brfhsm->bf_lock);
+}
+#else
+AuStubVoid(au_br_fhsm_init, struct au_br_fhsm *brfhsm)
+AuStubVoid(au_br_fhsm_fin, struct au_br_fhsm *brfhsm)
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_BRANCH_H__ */
diff --git a/fs/aufs/conf.mk b/fs/aufs/conf.mk
new file mode 100644
index 0000000000..12782f8e0f
--- /dev/null
+++ b/fs/aufs/conf.mk
@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: GPL-2.0
+
+AuConfStr = CONFIG_AUFS_FS=${CONFIG_AUFS_FS}
+
+define AuConf
+ifdef ${1}
+AuConfStr += ${1}=${${1}}
+endif
+endef
+
+AuConfAll = BRANCH_MAX_127 BRANCH_MAX_511 BRANCH_MAX_1023 BRANCH_MAX_32767 \
+ SBILIST \
+ HNOTIFY HFSNOTIFY \
+ EXPORT INO_T_64 \
+ XATTR \
+ FHSM \
+ RDU \
+ DIRREN \
+ SHWH \
+ BR_RAMFS \
+ BR_FUSE POLL \
+ BR_HFSPLUS \
+ BDEV_LOOP \
+ DEBUG MAGIC_SYSRQ
+$(foreach i, ${AuConfAll}, \
+ $(eval $(call AuConf,CONFIG_AUFS_${i})))
+
+AuConfName = ${obj}/conf.str
+${AuConfName}.tmp: FORCE
+ @echo ${AuConfStr} | tr ' ' '\n' | sed -e 's/^/"/' -e 's/$$/\\n"/' > $@
+${AuConfName}: ${AuConfName}.tmp
+ @diff -q $< $@ > /dev/null 2>&1 || { \
+ echo ' GEN ' $@; \
+ cp -p $< $@; \
+ }
+FORCE:
+clean-files += ${AuConfName} ${AuConfName}.tmp
+${obj}/sysfs.o: ${AuConfName}
+
+-include ${srctree}/${src}/conf_priv.mk
diff --git a/fs/aufs/cpup.c b/fs/aufs/cpup.c
new file mode 100644
index 0000000000..21134b4489
--- /dev/null
+++ b/fs/aufs/cpup.c
@@ -0,0 +1,1458 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * copy-up functions, see wbr_policy.c for copy-down
+ */
+
+#include <linux/fs_stack.h>
+#include <linux/mm.h>
+#include <linux/task_work.h>
+#include "aufs.h"
+
+void au_cpup_attr_flags(struct inode *dst, unsigned int iflags)
+{
+ const unsigned int mask = S_DEAD | S_SWAPFILE | S_PRIVATE
+ | S_NOATIME | S_NOCMTIME | S_AUTOMOUNT;
+
+ BUILD_BUG_ON(sizeof(iflags) != sizeof(dst->i_flags));
+
+ dst->i_flags |= iflags & ~mask;
+ if (au_test_fs_notime(dst->i_sb))
+ dst->i_flags |= S_NOATIME | S_NOCMTIME;
+}
+
+void au_cpup_attr_timesizes(struct inode *inode)
+{
+ struct inode *h_inode;
+
+ h_inode = au_h_iptr(inode, au_ibtop(inode));
+ fsstack_copy_attr_times(inode, h_inode);
+ fsstack_copy_inode_size(inode, h_inode);
+}
+
+void au_cpup_attr_nlink(struct inode *inode, int force)
+{
+ struct inode *h_inode;
+ struct super_block *sb;
+ aufs_bindex_t bindex, bbot;
+
+ sb = inode->i_sb;
+ bindex = au_ibtop(inode);
+ h_inode = au_h_iptr(inode, bindex);
+ if (!force
+ && !S_ISDIR(h_inode->i_mode)
+ && au_opt_test(au_mntflags(sb), PLINK)
+ && au_plink_test(inode))
+ return;
+
+ /*
+ * 0 can happen in revalidating.
+ * h_inode->i_mutex may not be held here, but it is harmless since once
+ * i_nlink reaches 0, it will never become positive except O_TMPFILE
+ * case.
+ * todo: O_TMPFILE+linkat(AT_SYMLINK_FOLLOW) bypassing aufs may cause
+ * the incorrect link count.
+ */
+ set_nlink(inode, h_inode->i_nlink);
+
+ /*
+ * fewer nlink makes find(1) noisy, but larger nlink doesn't.
+ * it may includes whplink directory.
+ */
+ if (S_ISDIR(h_inode->i_mode)) {
+ bbot = au_ibbot(inode);
+ for (bindex++; bindex <= bbot; bindex++) {
+ h_inode = au_h_iptr(inode, bindex);
+ if (h_inode)
+ au_add_nlink(inode, h_inode);
+ }
+ }
+}
+
+void au_cpup_attr_changeable(struct inode *inode)
+{
+ struct inode *h_inode;
+
+ h_inode = au_h_iptr(inode, au_ibtop(inode));
+ inode->i_mode = h_inode->i_mode;
+ inode->i_uid = h_inode->i_uid;
+ inode->i_gid = h_inode->i_gid;
+ au_cpup_attr_timesizes(inode);
+ au_cpup_attr_flags(inode, h_inode->i_flags);
+}
+
+void au_cpup_igen(struct inode *inode, struct inode *h_inode)
+{
+ struct au_iinfo *iinfo = au_ii(inode);
+
+ IiMustWriteLock(inode);
+
+ iinfo->ii_higen = h_inode->i_generation;
+ iinfo->ii_hsb1 = h_inode->i_sb;
+}
+
+void au_cpup_attr_all(struct inode *inode, int force)
+{
+ struct inode *h_inode;
+
+ h_inode = au_h_iptr(inode, au_ibtop(inode));
+ au_cpup_attr_changeable(inode);
+ if (inode->i_nlink > 0)
+ au_cpup_attr_nlink(inode, force);
+ inode->i_rdev = h_inode->i_rdev;
+ inode->i_blkbits = h_inode->i_blkbits;
+ au_cpup_igen(inode, h_inode);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* Note: dt_dentry and dt_h_dentry are not dget/dput-ed */
+
+/* keep the timestamps of the parent dir when cpup */
+void au_dtime_store(struct au_dtime *dt, struct dentry *dentry,
+ struct path *h_path)
+{
+ struct inode *h_inode;
+
+ dt->dt_dentry = dentry;
+ dt->dt_h_path = *h_path;
+ h_inode = d_inode(h_path->dentry);
+ dt->dt_atime = h_inode->i_atime;
+ dt->dt_mtime = h_inode->i_mtime;
+ /* smp_mb(); */
+}
+
+void au_dtime_revert(struct au_dtime *dt)
+{
+ struct iattr attr;
+ int err;
+
+ attr.ia_atime = dt->dt_atime;
+ attr.ia_mtime = dt->dt_mtime;
+ attr.ia_valid = ATTR_FORCE | ATTR_MTIME | ATTR_MTIME_SET
+ | ATTR_ATIME | ATTR_ATIME_SET;
+
+ /* no delegation since this is a directory */
+ err = vfsub_notify_change(&dt->dt_h_path, &attr, /*delegated*/NULL);
+ if (unlikely(err))
+ pr_warn("restoring timestamps failed(%d). ignored\n", err);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* internal use only */
+struct au_cpup_reg_attr {
+ int valid;
+ struct kstat st;
+ unsigned int iflags; /* inode->i_flags */
+};
+
+static noinline_for_stack
+int cpup_iattr(struct dentry *dst, aufs_bindex_t bindex, struct dentry *h_src,
+ struct au_cpup_reg_attr *h_src_attr)
+{
+ int err, sbits, icex;
+ unsigned int mnt_flags;
+ unsigned char verbose;
+ struct iattr ia;
+ struct path h_path;
+ struct inode *h_isrc, *h_idst;
+ struct kstat *h_st;
+ struct au_branch *br;
+
+ h_path.dentry = au_h_dptr(dst, bindex);
+ h_idst = d_inode(h_path.dentry);
+ br = au_sbr(dst->d_sb, bindex);
+ h_path.mnt = au_br_mnt(br);
+ h_isrc = d_inode(h_src);
+ ia.ia_valid = ATTR_FORCE | ATTR_UID | ATTR_GID
+ | ATTR_ATIME | ATTR_MTIME
+ | ATTR_ATIME_SET | ATTR_MTIME_SET;
+ if (h_src_attr && h_src_attr->valid) {
+ h_st = &h_src_attr->st;
+ ia.ia_uid = h_st->uid;
+ ia.ia_gid = h_st->gid;
+ ia.ia_atime = h_st->atime;
+ ia.ia_mtime = h_st->mtime;
+ if (h_idst->i_mode != h_st->mode
+ && !S_ISLNK(h_idst->i_mode)) {
+ ia.ia_valid |= ATTR_MODE;
+ ia.ia_mode = h_st->mode;
+ }
+ sbits = !!(h_st->mode & (S_ISUID | S_ISGID));
+ au_cpup_attr_flags(h_idst, h_src_attr->iflags);
+ } else {
+ ia.ia_uid = h_isrc->i_uid;
+ ia.ia_gid = h_isrc->i_gid;
+ ia.ia_atime = h_isrc->i_atime;
+ ia.ia_mtime = h_isrc->i_mtime;
+ if (h_idst->i_mode != h_isrc->i_mode
+ && !S_ISLNK(h_idst->i_mode)) {
+ ia.ia_valid |= ATTR_MODE;
+ ia.ia_mode = h_isrc->i_mode;
+ }
+ sbits = !!(h_isrc->i_mode & (S_ISUID | S_ISGID));
+ au_cpup_attr_flags(h_idst, h_isrc->i_flags);
+ }
+ /* no delegation since it is just created */
+ err = vfsub_notify_change(&h_path, &ia, /*delegated*/NULL);
+
+ /* is this nfs only? */
+ if (!err && sbits && au_test_nfs(h_path.dentry->d_sb)) {
+ ia.ia_valid = ATTR_FORCE | ATTR_MODE;
+ ia.ia_mode = h_isrc->i_mode;
+ err = vfsub_notify_change(&h_path, &ia, /*delegated*/NULL);
+ }
+
+ icex = br->br_perm & AuBrAttr_ICEX;
+ if (!err) {
+ mnt_flags = au_mntflags(dst->d_sb);
+ verbose = !!au_opt_test(mnt_flags, VERBOSE);
+ err = au_cpup_xattr(h_path.dentry, h_src, icex, verbose);
+ }
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_do_copy_file(struct file *dst, struct file *src, loff_t len,
+ char *buf, unsigned long blksize)
+{
+ int err;
+ size_t sz, rbytes, wbytes;
+ unsigned char all_zero;
+ char *p, *zp;
+ struct inode *h_inode;
+ /* reduce stack usage */
+ struct iattr *ia;
+
+ zp = page_address(ZERO_PAGE(0));
+ if (unlikely(!zp))
+ return -ENOMEM; /* possible? */
+
+ err = 0;
+ all_zero = 0;
+ while (len) {
+ AuDbg("len %lld\n", len);
+ sz = blksize;
+ if (len < blksize)
+ sz = len;
+
+ rbytes = 0;
+ /* todo: signal_pending? */
+ while (!rbytes || err == -EAGAIN || err == -EINTR) {
+ rbytes = vfsub_read_k(src, buf, sz, &src->f_pos);
+ err = rbytes;
+ }
+ if (unlikely(err < 0))
+ break;
+
+ all_zero = 0;
+ if (len >= rbytes && rbytes == blksize)
+ all_zero = !memcmp(buf, zp, rbytes);
+ if (!all_zero) {
+ wbytes = rbytes;
+ p = buf;
+ while (wbytes) {
+ size_t b;
+
+ b = vfsub_write_k(dst, p, wbytes, &dst->f_pos);
+ err = b;
+ /* todo: signal_pending? */
+ if (unlikely(err == -EAGAIN || err == -EINTR))
+ continue;
+ if (unlikely(err < 0))
+ break;
+ wbytes -= b;
+ p += b;
+ }
+ if (unlikely(err < 0))
+ break;
+ } else {
+ loff_t res;
+
+ AuLabel(hole);
+ res = vfsub_llseek(dst, rbytes, SEEK_CUR);
+ err = res;
+ if (unlikely(res < 0))
+ break;
+ }
+ len -= rbytes;
+ err = 0;
+ }
+
+ /* the last block may be a hole */
+ if (!err && all_zero) {
+ AuLabel(last hole);
+
+ err = 1;
+ if (au_test_nfs(dst->f_path.dentry->d_sb)) {
+ /* nfs requires this step to make last hole */
+ /* is this only nfs? */
+ do {
+ /* todo: signal_pending? */
+ err = vfsub_write_k(dst, "\0", 1, &dst->f_pos);
+ } while (err == -EAGAIN || err == -EINTR);
+ if (err == 1)
+ dst->f_pos--;
+ }
+
+ if (err == 1) {
+ ia = (void *)buf;
+ ia->ia_size = dst->f_pos;
+ ia->ia_valid = ATTR_SIZE | ATTR_FILE;
+ ia->ia_file = dst;
+ h_inode = file_inode(dst);
+ inode_lock_nested(h_inode, AuLsc_I_CHILD2);
+ /* no delegation since it is just created */
+ err = vfsub_notify_change(&dst->f_path, ia,
+ /*delegated*/NULL);
+ inode_unlock(h_inode);
+ }
+ }
+
+ return err;
+}
+
+int au_copy_file(struct file *dst, struct file *src, loff_t len)
+{
+ int err;
+ unsigned long blksize;
+ unsigned char do_kfree;
+ char *buf;
+ struct super_block *h_sb;
+
+ err = -ENOMEM;
+ h_sb = file_inode(dst)->i_sb;
+ blksize = h_sb->s_blocksize;
+ if (!blksize || PAGE_SIZE < blksize)
+ blksize = PAGE_SIZE;
+ AuDbg("blksize %lu\n", blksize);
+ do_kfree = (blksize != PAGE_SIZE && blksize >= sizeof(struct iattr *));
+ if (do_kfree)
+ buf = kmalloc(blksize, GFP_NOFS);
+ else
+ buf = (void *)__get_free_page(GFP_NOFS);
+ if (unlikely(!buf))
+ goto out;
+
+ if (len > (1 << 22))
+ AuDbg("copying a large file %lld\n", (long long)len);
+
+ src->f_pos = 0;
+ dst->f_pos = 0;
+ err = au_do_copy_file(dst, src, len, buf, blksize);
+ if (do_kfree) {
+ AuDebugOn(!au_kfree_do_sz_test(blksize));
+ au_kfree_do_rcu(buf);
+ } else
+ free_page((unsigned long)buf);
+
+out:
+ return err;
+}
+
+static int au_do_copy(struct file *dst, struct file *src, loff_t len)
+{
+ int err;
+ struct super_block *h_src_sb;
+ struct inode *h_src_inode;
+
+ h_src_inode = file_inode(src);
+ h_src_sb = h_src_inode->i_sb;
+
+ /* XFS acquires inode_lock */
+ if (!au_test_xfs(h_src_sb))
+ err = au_copy_file(dst, src, len);
+ else {
+ inode_unlock_shared(h_src_inode);
+ err = au_copy_file(dst, src, len);
+ inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD);
+ }
+
+ return err;
+}
+
+static int au_clone_or_copy(struct file *dst, struct file *src, loff_t len)
+{
+ int err;
+ loff_t lo;
+ struct super_block *h_src_sb;
+ struct inode *h_src_inode;
+
+ h_src_inode = file_inode(src);
+ h_src_sb = h_src_inode->i_sb;
+ if (h_src_sb != file_inode(dst)->i_sb
+ || !dst->f_op->remap_file_range) {
+ err = au_do_copy(dst, src, len);
+ goto out;
+ }
+
+ if (!au_test_nfs(h_src_sb)) {
+ inode_unlock_shared(h_src_inode);
+ lo = vfsub_clone_file_range(src, dst, len);
+ inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD);
+ } else
+ lo = vfsub_clone_file_range(src, dst, len);
+ if (lo == len) {
+ err = 0;
+ goto out; /* success */
+ } else if (lo >= 0)
+ /* todo: possible? */
+ /* paritially succeeded */
+ AuDbg("lo %lld, len %lld. Retrying.\n", lo, len);
+ else if (lo != -EOPNOTSUPP) {
+ /* older XFS has a condition in cloning */
+ err = lo;
+ goto out;
+ }
+
+ /* the backend fs on NFS may not support cloning */
+ err = au_do_copy(dst, src, len);
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/*
+ * to support a sparse file which is opened with O_APPEND,
+ * we need to close the file.
+ */
+static int au_cp_regular(struct au_cp_generic *cpg)
+{
+ int err, i;
+ enum { SRC, DST };
+ struct {
+ aufs_bindex_t bindex;
+ unsigned int flags;
+ struct dentry *dentry;
+ int force_wr;
+ struct file *file;
+ } *f, file[] = {
+ {
+ .bindex = cpg->bsrc,
+ .flags = O_RDONLY | O_NOATIME | O_LARGEFILE,
+ },
+ {
+ .bindex = cpg->bdst,
+ .flags = O_WRONLY | O_NOATIME | O_LARGEFILE,
+ .force_wr = !!au_ftest_cpup(cpg->flags, RWDST),
+ }
+ };
+ struct au_branch *br;
+ struct super_block *sb, *h_src_sb;
+ struct inode *h_src_inode;
+ struct task_struct *tsk = current;
+
+ /* bsrc branch can be ro/rw. */
+ sb = cpg->dentry->d_sb;
+ f = file;
+ for (i = 0; i < 2; i++, f++) {
+ f->dentry = au_h_dptr(cpg->dentry, f->bindex);
+ f->file = au_h_open(cpg->dentry, f->bindex, f->flags,
+ /*file*/NULL, f->force_wr);
+ if (IS_ERR(f->file)) {
+ err = PTR_ERR(f->file);
+ if (i == SRC)
+ goto out;
+ else
+ goto out_src;
+ }
+ }
+
+ /* try stopping to update while we copyup */
+ h_src_inode = d_inode(file[SRC].dentry);
+ h_src_sb = h_src_inode->i_sb;
+ if (!au_test_nfs(h_src_sb))
+ IMustLock(h_src_inode);
+ err = au_clone_or_copy(file[DST].file, file[SRC].file, cpg->len);
+
+ /* i wonder if we had O_NO_DELAY_FPUT flag */
+ if (tsk->flags & PF_KTHREAD)
+ __fput_sync(file[DST].file);
+ else {
+ /* it happened actually */
+ fput(file[DST].file);
+ /*
+ * too bad.
+ * we have to call both since we don't know which place the file
+ * was added to.
+ */
+ task_work_run();
+ flush_delayed_fput();
+ }
+ br = au_sbr(sb, file[DST].bindex);
+ au_lcnt_dec(&br->br_nfiles);
+
+out_src:
+ fput(file[SRC].file);
+ br = au_sbr(sb, file[SRC].bindex);
+ au_lcnt_dec(&br->br_nfiles);
+out:
+ return err;
+}
+
+static int au_do_cpup_regular(struct au_cp_generic *cpg,
+ struct au_cpup_reg_attr *h_src_attr)
+{
+ int err, rerr;
+ loff_t l;
+ struct path h_path;
+ struct inode *h_src_inode, *h_dst_inode;
+
+ err = 0;
+ h_src_inode = au_h_iptr(d_inode(cpg->dentry), cpg->bsrc);
+ l = i_size_read(h_src_inode);
+ if (cpg->len == -1 || l < cpg->len)
+ cpg->len = l;
+ if (cpg->len) {
+ /* try stopping to update while we are referencing */
+ inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD);
+ au_pin_hdir_unlock(cpg->pin);
+
+ h_path.dentry = au_h_dptr(cpg->dentry, cpg->bsrc);
+ h_path.mnt = au_sbr_mnt(cpg->dentry->d_sb, cpg->bsrc);
+ h_src_attr->iflags = h_src_inode->i_flags;
+ if (!au_test_nfs(h_src_inode->i_sb))
+ err = vfsub_getattr(&h_path, &h_src_attr->st);
+ else {
+ inode_unlock_shared(h_src_inode);
+ err = vfsub_getattr(&h_path, &h_src_attr->st);
+ inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD);
+ }
+ if (unlikely(err)) {
+ inode_unlock_shared(h_src_inode);
+ goto out;
+ }
+ h_src_attr->valid = 1;
+ if (!au_test_nfs(h_src_inode->i_sb)) {
+ err = au_cp_regular(cpg);
+ inode_unlock_shared(h_src_inode);
+ } else {
+ inode_unlock_shared(h_src_inode);
+ err = au_cp_regular(cpg);
+ }
+ rerr = au_pin_hdir_relock(cpg->pin);
+ if (!err && rerr)
+ err = rerr;
+ }
+ if (!err && (h_src_inode->i_state & I_LINKABLE)) {
+ h_path.dentry = au_h_dptr(cpg->dentry, cpg->bdst);
+ h_dst_inode = d_inode(h_path.dentry);
+ spin_lock(&h_dst_inode->i_lock);
+ h_dst_inode->i_state |= I_LINKABLE;
+ spin_unlock(&h_dst_inode->i_lock);
+ }
+
+out:
+ return err;
+}
+
+static int au_do_cpup_symlink(struct path *h_path, struct dentry *h_src,
+ struct inode *h_dir)
+{
+ int err, symlen;
+ mm_segment_t old_fs;
+ union {
+ char *k;
+ char __user *u;
+ } sym;
+
+ err = -ENOMEM;
+ sym.k = (void *)__get_free_page(GFP_NOFS);
+ if (unlikely(!sym.k))
+ goto out;
+
+ /* unnecessary to support mmap_sem since symlink is not mmap-able */
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ symlen = vfs_readlink(h_src, sym.u, PATH_MAX);
+ err = symlen;
+ set_fs(old_fs);
+
+ if (symlen > 0) {
+ sym.k[symlen] = 0;
+ err = vfsub_symlink(h_dir, h_path, sym.k);
+ }
+ free_page((unsigned long)sym.k);
+
+out:
+ return err;
+}
+
+/*
+ * regardless 'acl' option, reset all ACL.
+ * All ACL will be copied up later from the original entry on the lower branch.
+ */
+static int au_reset_acl(struct inode *h_dir, struct path *h_path, umode_t mode)
+{
+ int err;
+ struct dentry *h_dentry;
+ struct inode *h_inode;
+
+ h_dentry = h_path->dentry;
+ h_inode = d_inode(h_dentry);
+ /* forget_all_cached_acls(h_inode)); */
+ err = vfsub_removexattr(h_dentry, XATTR_NAME_POSIX_ACL_ACCESS);
+ AuTraceErr(err);
+ if (err == -EOPNOTSUPP)
+ err = 0;
+ if (!err)
+ err = vfsub_acl_chmod(h_inode, mode);
+
+ AuTraceErr(err);
+ return err;
+}
+
+static int au_do_cpup_dir(struct au_cp_generic *cpg, struct dentry *dst_parent,
+ struct inode *h_dir, struct path *h_path)
+{
+ int err;
+ struct inode *dir, *inode;
+
+ err = vfsub_removexattr(h_path->dentry, XATTR_NAME_POSIX_ACL_DEFAULT);
+ AuTraceErr(err);
+ if (err == -EOPNOTSUPP)
+ err = 0;
+ if (unlikely(err))
+ goto out;
+
+ /*
+ * strange behaviour from the users view,
+ * particularly setattr case
+ */
+ dir = d_inode(dst_parent);
+ if (au_ibtop(dir) == cpg->bdst)
+ au_cpup_attr_nlink(dir, /*force*/1);
+ inode = d_inode(cpg->dentry);
+ au_cpup_attr_nlink(inode, /*force*/1);
+
+out:
+ return err;
+}
+
+static noinline_for_stack
+int cpup_entry(struct au_cp_generic *cpg, struct dentry *dst_parent,
+ struct au_cpup_reg_attr *h_src_attr)
+{
+ int err;
+ umode_t mode;
+ unsigned int mnt_flags;
+ unsigned char isdir, isreg, force;
+ const unsigned char do_dt = !!au_ftest_cpup(cpg->flags, DTIME);
+ struct au_dtime dt;
+ struct path h_path;
+ struct dentry *h_src, *h_dst, *h_parent;
+ struct inode *h_inode, *h_dir;
+ struct super_block *sb;
+
+ /* bsrc branch can be ro/rw. */
+ h_src = au_h_dptr(cpg->dentry, cpg->bsrc);
+ h_inode = d_inode(h_src);
+ AuDebugOn(h_inode != au_h_iptr(d_inode(cpg->dentry), cpg->bsrc));
+
+ /* try stopping to be referenced while we are creating */
+ h_dst = au_h_dptr(cpg->dentry, cpg->bdst);
+ if (au_ftest_cpup(cpg->flags, RENAME))
+ AuDebugOn(strncmp(h_dst->d_name.name, AUFS_WH_PFX,
+ AUFS_WH_PFX_LEN));
+ h_parent = h_dst->d_parent; /* dir inode is locked */
+ h_dir = d_inode(h_parent);
+ IMustLock(h_dir);
+ AuDebugOn(h_parent != h_dst->d_parent);
+
+ sb = cpg->dentry->d_sb;
+ h_path.mnt = au_sbr_mnt(sb, cpg->bdst);
+ if (do_dt) {
+ h_path.dentry = h_parent;
+ au_dtime_store(&dt, dst_parent, &h_path);
+ }
+ h_path.dentry = h_dst;
+
+ isreg = 0;
+ isdir = 0;
+ mode = h_inode->i_mode;
+ switch (mode & S_IFMT) {
+ case S_IFREG:
+ isreg = 1;
+ err = vfsub_create(h_dir, &h_path, 0600, /*want_excl*/true);
+ if (!err)
+ err = au_do_cpup_regular(cpg, h_src_attr);
+ break;
+ case S_IFDIR:
+ isdir = 1;
+ err = vfsub_mkdir(h_dir, &h_path, mode);
+ if (!err)
+ err = au_do_cpup_dir(cpg, dst_parent, h_dir, &h_path);
+ break;
+ case S_IFLNK:
+ err = au_do_cpup_symlink(&h_path, h_src, h_dir);
+ break;
+ case S_IFCHR:
+ case S_IFBLK:
+ AuDebugOn(!capable(CAP_MKNOD));
+ /*FALLTHROUGH*/
+ case S_IFIFO:
+ case S_IFSOCK:
+ err = vfsub_mknod(h_dir, &h_path, mode, h_inode->i_rdev);
+ break;
+ default:
+ AuIOErr("Unknown inode type 0%o\n", mode);
+ err = -EIO;
+ }
+ if (!err)
+ err = au_reset_acl(h_dir, &h_path, mode);
+
+ mnt_flags = au_mntflags(sb);
+ if (!au_opt_test(mnt_flags, UDBA_NONE)
+ && !isdir
+ && au_opt_test(mnt_flags, XINO)
+ && (h_inode->i_nlink == 1
+ || (h_inode->i_state & I_LINKABLE))
+ /* todo: unnecessary? */
+ /* && d_inode(cpg->dentry)->i_nlink == 1 */
+ && cpg->bdst < cpg->bsrc
+ && !au_ftest_cpup(cpg->flags, KEEPLINO))
+ au_xino_write(sb, cpg->bsrc, h_inode->i_ino, /*ino*/0);
+ /* ignore this error */
+
+ if (!err) {
+ force = 0;
+ if (isreg) {
+ force = !!cpg->len;
+ if (cpg->len == -1)
+ force = !!i_size_read(h_inode);
+ }
+ au_fhsm_wrote(sb, cpg->bdst, force);
+ }
+
+ if (do_dt)
+ au_dtime_revert(&dt);
+ return err;
+}
+
+static int au_do_ren_after_cpup(struct au_cp_generic *cpg, struct path *h_path)
+{
+ int err;
+ struct dentry *dentry, *h_dentry, *h_parent, *parent;
+ struct inode *h_dir;
+ aufs_bindex_t bdst;
+
+ dentry = cpg->dentry;
+ bdst = cpg->bdst;
+ h_dentry = au_h_dptr(dentry, bdst);
+ if (!au_ftest_cpup(cpg->flags, OVERWRITE)) {
+ dget(h_dentry);
+ au_set_h_dptr(dentry, bdst, NULL);
+ err = au_lkup_neg(dentry, bdst, /*wh*/0);
+ if (!err)
+ h_path->dentry = dget(au_h_dptr(dentry, bdst));
+ au_set_h_dptr(dentry, bdst, h_dentry);
+ } else {
+ err = 0;
+ parent = dget_parent(dentry);
+ h_parent = au_h_dptr(parent, bdst);
+ dput(parent);
+ h_path->dentry = vfsub_lkup_one(&dentry->d_name, h_parent);
+ if (IS_ERR(h_path->dentry))
+ err = PTR_ERR(h_path->dentry);
+ }
+ if (unlikely(err))
+ goto out;
+
+ h_parent = h_dentry->d_parent; /* dir inode is locked */
+ h_dir = d_inode(h_parent);
+ IMustLock(h_dir);
+ AuDbg("%pd %pd\n", h_dentry, h_path->dentry);
+ /* no delegation since it is just created */
+ err = vfsub_rename(h_dir, h_dentry, h_dir, h_path, /*delegated*/NULL,
+ /*flags*/0);
+ dput(h_path->dentry);
+
+out:
+ return err;
+}
+
+/*
+ * copyup the @dentry from @bsrc to @bdst.
+ * the caller must set the both of lower dentries.
+ * @len is for truncating when it is -1 copyup the entire file.
+ * in link/rename cases, @dst_parent may be different from the real one.
+ * basic->bsrc can be larger than basic->bdst.
+ * aufs doesn't touch the credential so
+ * security_inode_copy_up{,_xattr}() are unnecessary.
+ */
+static int au_cpup_single(struct au_cp_generic *cpg, struct dentry *dst_parent)
+{
+ int err, rerr;
+ aufs_bindex_t old_ibtop;
+ unsigned char isdir, plink;
+ struct dentry *h_src, *h_dst, *h_parent;
+ struct inode *dst_inode, *h_dir, *inode, *delegated, *src_inode;
+ struct super_block *sb;
+ struct au_branch *br;
+ /* to reduce stack size */
+ struct {
+ struct au_dtime dt;
+ struct path h_path;
+ struct au_cpup_reg_attr h_src_attr;
+ } *a;
+
+ err = -ENOMEM;
+ a = kmalloc(sizeof(*a), GFP_NOFS);
+ if (unlikely(!a))
+ goto out;
+ a->h_src_attr.valid = 0;
+
+ sb = cpg->dentry->d_sb;
+ br = au_sbr(sb, cpg->bdst);
+ a->h_path.mnt = au_br_mnt(br);
+ h_dst = au_h_dptr(cpg->dentry, cpg->bdst);
+ h_parent = h_dst->d_parent; /* dir inode is locked */
+ h_dir = d_inode(h_parent);
+ IMustLock(h_dir);
+
+ h_src = au_h_dptr(cpg->dentry, cpg->bsrc);
+ inode = d_inode(cpg->dentry);
+
+ if (!dst_parent)
+ dst_parent = dget_parent(cpg->dentry);
+ else
+ dget(dst_parent);
+
+ plink = !!au_opt_test(au_mntflags(sb), PLINK);
+ dst_inode = au_h_iptr(inode, cpg->bdst);
+ if (dst_inode) {
+ if (unlikely(!plink)) {
+ err = -EIO;
+ AuIOErr("hi%lu(i%lu) exists on b%d "
+ "but plink is disabled\n",
+ dst_inode->i_ino, inode->i_ino, cpg->bdst);
+ goto out_parent;
+ }
+
+ if (dst_inode->i_nlink) {
+ const int do_dt = au_ftest_cpup(cpg->flags, DTIME);
+
+ h_src = au_plink_lkup(inode, cpg->bdst);
+ err = PTR_ERR(h_src);
+ if (IS_ERR(h_src))
+ goto out_parent;
+ if (unlikely(d_is_negative(h_src))) {
+ err = -EIO;
+ AuIOErr("i%lu exists on b%d "
+ "but not pseudo-linked\n",
+ inode->i_ino, cpg->bdst);
+ dput(h_src);
+ goto out_parent;
+ }
+
+ if (do_dt) {
+ a->h_path.dentry = h_parent;
+ au_dtime_store(&a->dt, dst_parent, &a->h_path);
+ }
+
+ a->h_path.dentry = h_dst;
+ delegated = NULL;
+ err = vfsub_link(h_src, h_dir, &a->h_path, &delegated);
+ if (!err && au_ftest_cpup(cpg->flags, RENAME))
+ err = au_do_ren_after_cpup(cpg, &a->h_path);
+ if (do_dt)
+ au_dtime_revert(&a->dt);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal link\n");
+ iput(delegated);
+ }
+ dput(h_src);
+ goto out_parent;
+ } else
+ /* todo: cpup_wh_file? */
+ /* udba work */
+ au_update_ibrange(inode, /*do_put_zero*/1);
+ }
+
+ isdir = S_ISDIR(inode->i_mode);
+ old_ibtop = au_ibtop(inode);
+ err = cpup_entry(cpg, dst_parent, &a->h_src_attr);
+ if (unlikely(err))
+ goto out_rev;
+ dst_inode = d_inode(h_dst);
+ inode_lock_nested(dst_inode, AuLsc_I_CHILD2);
+ /* todo: necessary? */
+ /* au_pin_hdir_unlock(cpg->pin); */
+
+ err = cpup_iattr(cpg->dentry, cpg->bdst, h_src, &a->h_src_attr);
+ if (unlikely(err)) {
+ /* todo: necessary? */
+ /* au_pin_hdir_relock(cpg->pin); */ /* ignore an error */
+ inode_unlock(dst_inode);
+ goto out_rev;
+ }
+
+ if (cpg->bdst < old_ibtop) {
+ if (S_ISREG(inode->i_mode)) {
+ err = au_dy_iaop(inode, cpg->bdst, dst_inode);
+ if (unlikely(err)) {
+ /* ignore an error */
+ /* au_pin_hdir_relock(cpg->pin); */
+ inode_unlock(dst_inode);
+ goto out_rev;
+ }
+ }
+ au_set_ibtop(inode, cpg->bdst);
+ } else
+ au_set_ibbot(inode, cpg->bdst);
+ au_set_h_iptr(inode, cpg->bdst, au_igrab(dst_inode),
+ au_hi_flags(inode, isdir));
+
+ /* todo: necessary? */
+ /* err = au_pin_hdir_relock(cpg->pin); */
+ inode_unlock(dst_inode);
+ if (unlikely(err))
+ goto out_rev;
+
+ src_inode = d_inode(h_src);
+ if (!isdir
+ && (src_inode->i_nlink > 1
+ || src_inode->i_state & I_LINKABLE)
+ && plink)
+ au_plink_append(inode, cpg->bdst, h_dst);
+
+ if (au_ftest_cpup(cpg->flags, RENAME)) {
+ a->h_path.dentry = h_dst;
+ err = au_do_ren_after_cpup(cpg, &a->h_path);
+ }
+ if (!err)
+ goto out_parent; /* success */
+
+ /* revert */
+out_rev:
+ a->h_path.dentry = h_parent;
+ au_dtime_store(&a->dt, dst_parent, &a->h_path);
+ a->h_path.dentry = h_dst;
+ rerr = 0;
+ if (d_is_positive(h_dst)) {
+ if (!isdir) {
+ /* no delegation since it is just created */
+ rerr = vfsub_unlink(h_dir, &a->h_path,
+ /*delegated*/NULL, /*force*/0);
+ } else
+ rerr = vfsub_rmdir(h_dir, &a->h_path);
+ }
+ au_dtime_revert(&a->dt);
+ if (rerr) {
+ AuIOErr("failed removing broken entry(%d, %d)\n", err, rerr);
+ err = -EIO;
+ }
+out_parent:
+ dput(dst_parent);
+ au_kfree_rcu(a);
+out:
+ return err;
+}
+
+#if 0 /* reserved */
+struct au_cpup_single_args {
+ int *errp;
+ struct au_cp_generic *cpg;
+ struct dentry *dst_parent;
+};
+
+static void au_call_cpup_single(void *args)
+{
+ struct au_cpup_single_args *a = args;
+
+ au_pin_hdir_acquire_nest(a->cpg->pin);
+ *a->errp = au_cpup_single(a->cpg, a->dst_parent);
+ au_pin_hdir_release(a->cpg->pin);
+}
+#endif
+
+/*
+ * prevent SIGXFSZ in copy-up.
+ * testing CAP_MKNOD is for generic fs,
+ * but CAP_FSETID is for xfs only, currently.
+ */
+static int au_cpup_sio_test(struct au_pin *pin, umode_t mode)
+{
+ int do_sio;
+ struct super_block *sb;
+ struct inode *h_dir;
+
+ do_sio = 0;
+ sb = au_pinned_parent(pin)->d_sb;
+ if (!au_wkq_test()
+ && (!au_sbi(sb)->si_plink_maint_pid
+ || au_plink_maint(sb, AuLock_NOPLM))) {
+ switch (mode & S_IFMT) {
+ case S_IFREG:
+ /* no condition about RLIMIT_FSIZE and the file size */
+ do_sio = 1;
+ break;
+ case S_IFCHR:
+ case S_IFBLK:
+ do_sio = !capable(CAP_MKNOD);
+ break;
+ }
+ if (!do_sio)
+ do_sio = ((mode & (S_ISUID | S_ISGID))
+ && !capable(CAP_FSETID));
+ /* this workaround may be removed in the future */
+ if (!do_sio) {
+ h_dir = au_pinned_h_dir(pin);
+ do_sio = h_dir->i_mode & S_ISVTX;
+ }
+ }
+
+ return do_sio;
+}
+
+#if 0 /* reserved */
+int au_sio_cpup_single(struct au_cp_generic *cpg, struct dentry *dst_parent)
+{
+ int err, wkq_err;
+ struct dentry *h_dentry;
+
+ h_dentry = au_h_dptr(cpg->dentry, cpg->bsrc);
+ if (!au_cpup_sio_test(pin, d_inode(h_dentry)->i_mode))
+ err = au_cpup_single(cpg, dst_parent);
+ else {
+ struct au_cpup_single_args args = {
+ .errp = &err,
+ .cpg = cpg,
+ .dst_parent = dst_parent
+ };
+ wkq_err = au_wkq_wait(au_call_cpup_single, &args);
+ if (unlikely(wkq_err))
+ err = wkq_err;
+ }
+
+ return err;
+}
+#endif
+
+/*
+ * copyup the @dentry from the first active lower branch to @bdst,
+ * using au_cpup_single().
+ */
+static int au_cpup_simple(struct au_cp_generic *cpg)
+{
+ int err;
+ unsigned int flags_orig;
+ struct dentry *dentry;
+
+ AuDebugOn(cpg->bsrc < 0);
+
+ dentry = cpg->dentry;
+ DiMustWriteLock(dentry);
+
+ err = au_lkup_neg(dentry, cpg->bdst, /*wh*/1);
+ if (!err) {
+ flags_orig = cpg->flags;
+ au_fset_cpup(cpg->flags, RENAME);
+ err = au_cpup_single(cpg, NULL);
+ cpg->flags = flags_orig;
+ if (!err)
+ return 0; /* success */
+
+ /* revert */
+ au_set_h_dptr(dentry, cpg->bdst, NULL);
+ au_set_dbtop(dentry, cpg->bsrc);
+ }
+
+ return err;
+}
+
+struct au_cpup_simple_args {
+ int *errp;
+ struct au_cp_generic *cpg;
+};
+
+static void au_call_cpup_simple(void *args)
+{
+ struct au_cpup_simple_args *a = args;
+
+ au_pin_hdir_acquire_nest(a->cpg->pin);
+ *a->errp = au_cpup_simple(a->cpg);
+ au_pin_hdir_release(a->cpg->pin);
+}
+
+static int au_do_sio_cpup_simple(struct au_cp_generic *cpg)
+{
+ int err, wkq_err;
+ struct dentry *dentry, *parent;
+ struct file *h_file;
+ struct inode *h_dir;
+
+ dentry = cpg->dentry;
+ h_file = NULL;
+ if (au_ftest_cpup(cpg->flags, HOPEN)) {
+ AuDebugOn(cpg->bsrc < 0);
+ h_file = au_h_open_pre(dentry, cpg->bsrc, /*force_wr*/0);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out;
+ }
+
+ parent = dget_parent(dentry);
+ h_dir = au_h_iptr(d_inode(parent), cpg->bdst);
+ if (!au_test_h_perm_sio(h_dir, MAY_EXEC | MAY_WRITE)
+ && !au_cpup_sio_test(cpg->pin, d_inode(dentry)->i_mode))
+ err = au_cpup_simple(cpg);
+ else {
+ struct au_cpup_simple_args args = {
+ .errp = &err,
+ .cpg = cpg
+ };
+ wkq_err = au_wkq_wait(au_call_cpup_simple, &args);
+ if (unlikely(wkq_err))
+ err = wkq_err;
+ }
+
+ dput(parent);
+ if (h_file)
+ au_h_open_post(dentry, cpg->bsrc, h_file);
+
+out:
+ return err;
+}
+
+int au_sio_cpup_simple(struct au_cp_generic *cpg)
+{
+ aufs_bindex_t bsrc, bbot;
+ struct dentry *dentry, *h_dentry;
+
+ if (cpg->bsrc < 0) {
+ dentry = cpg->dentry;
+ bbot = au_dbbot(dentry);
+ for (bsrc = cpg->bdst + 1; bsrc <= bbot; bsrc++) {
+ h_dentry = au_h_dptr(dentry, bsrc);
+ if (h_dentry) {
+ AuDebugOn(d_is_negative(h_dentry));
+ break;
+ }
+ }
+ AuDebugOn(bsrc > bbot);
+ cpg->bsrc = bsrc;
+ }
+ AuDebugOn(cpg->bsrc <= cpg->bdst);
+ return au_do_sio_cpup_simple(cpg);
+}
+
+int au_sio_cpdown_simple(struct au_cp_generic *cpg)
+{
+ AuDebugOn(cpg->bdst <= cpg->bsrc);
+ return au_do_sio_cpup_simple(cpg);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * copyup the deleted file for writing.
+ */
+static int au_do_cpup_wh(struct au_cp_generic *cpg, struct dentry *wh_dentry,
+ struct file *file)
+{
+ int err;
+ unsigned int flags_orig;
+ aufs_bindex_t bsrc_orig;
+ struct au_dinfo *dinfo;
+ struct {
+ struct au_hdentry *hd;
+ struct dentry *h_dentry;
+ } hdst, hsrc;
+
+ dinfo = au_di(cpg->dentry);
+ AuRwMustWriteLock(&dinfo->di_rwsem);
+
+ bsrc_orig = cpg->bsrc;
+ cpg->bsrc = dinfo->di_btop;
+ hdst.hd = au_hdentry(dinfo, cpg->bdst);
+ hdst.h_dentry = hdst.hd->hd_dentry;
+ hdst.hd->hd_dentry = wh_dentry;
+ dinfo->di_btop = cpg->bdst;
+
+ hsrc.h_dentry = NULL;
+ if (file) {
+ hsrc.hd = au_hdentry(dinfo, cpg->bsrc);
+ hsrc.h_dentry = hsrc.hd->hd_dentry;
+ hsrc.hd->hd_dentry = au_hf_top(file)->f_path.dentry;
+ }
+ flags_orig = cpg->flags;
+ cpg->flags = !AuCpup_DTIME;
+ err = au_cpup_single(cpg, /*h_parent*/NULL);
+ cpg->flags = flags_orig;
+ if (file) {
+ if (!err)
+ err = au_reopen_nondir(file);
+ hsrc.hd->hd_dentry = hsrc.h_dentry;
+ }
+ hdst.hd->hd_dentry = hdst.h_dentry;
+ dinfo->di_btop = cpg->bsrc;
+ cpg->bsrc = bsrc_orig;
+
+ return err;
+}
+
+static int au_cpup_wh(struct au_cp_generic *cpg, struct file *file)
+{
+ int err;
+ aufs_bindex_t bdst;
+ struct au_dtime dt;
+ struct dentry *dentry, *parent, *h_parent, *wh_dentry;
+ struct au_branch *br;
+ struct path h_path;
+
+ dentry = cpg->dentry;
+ bdst = cpg->bdst;
+ br = au_sbr(dentry->d_sb, bdst);
+ parent = dget_parent(dentry);
+ h_parent = au_h_dptr(parent, bdst);
+ wh_dentry = au_whtmp_lkup(h_parent, br, &dentry->d_name);
+ err = PTR_ERR(wh_dentry);
+ if (IS_ERR(wh_dentry))
+ goto out;
+
+ h_path.dentry = h_parent;
+ h_path.mnt = au_br_mnt(br);
+ au_dtime_store(&dt, parent, &h_path);
+ err = au_do_cpup_wh(cpg, wh_dentry, file);
+ if (unlikely(err))
+ goto out_wh;
+
+ dget(wh_dentry);
+ h_path.dentry = wh_dentry;
+ if (!d_is_dir(wh_dentry)) {
+ /* no delegation since it is just created */
+ err = vfsub_unlink(d_inode(h_parent), &h_path,
+ /*delegated*/NULL, /*force*/0);
+ } else
+ err = vfsub_rmdir(d_inode(h_parent), &h_path);
+ if (unlikely(err)) {
+ AuIOErr("failed remove copied-up tmp file %pd(%d)\n",
+ wh_dentry, err);
+ err = -EIO;
+ }
+ au_dtime_revert(&dt);
+ au_set_hi_wh(d_inode(dentry), bdst, wh_dentry);
+
+out_wh:
+ dput(wh_dentry);
+out:
+ dput(parent);
+ return err;
+}
+
+struct au_cpup_wh_args {
+ int *errp;
+ struct au_cp_generic *cpg;
+ struct file *file;
+};
+
+static void au_call_cpup_wh(void *args)
+{
+ struct au_cpup_wh_args *a = args;
+
+ au_pin_hdir_acquire_nest(a->cpg->pin);
+ *a->errp = au_cpup_wh(a->cpg, a->file);
+ au_pin_hdir_release(a->cpg->pin);
+}
+
+int au_sio_cpup_wh(struct au_cp_generic *cpg, struct file *file)
+{
+ int err, wkq_err;
+ aufs_bindex_t bdst;
+ struct dentry *dentry, *parent, *h_orph, *h_parent;
+ struct inode *dir, *h_dir, *h_tmpdir;
+ struct au_wbr *wbr;
+ struct au_pin wh_pin, *pin_orig;
+
+ dentry = cpg->dentry;
+ bdst = cpg->bdst;
+ parent = dget_parent(dentry);
+ dir = d_inode(parent);
+ h_orph = NULL;
+ h_parent = NULL;
+ h_dir = au_igrab(au_h_iptr(dir, bdst));
+ h_tmpdir = h_dir;
+ pin_orig = NULL;
+ if (!h_dir->i_nlink) {
+ wbr = au_sbr(dentry->d_sb, bdst)->br_wbr;
+ h_orph = wbr->wbr_orph;
+
+ h_parent = dget(au_h_dptr(parent, bdst));
+ au_set_h_dptr(parent, bdst, dget(h_orph));
+ h_tmpdir = d_inode(h_orph);
+ au_set_h_iptr(dir, bdst, au_igrab(h_tmpdir), /*flags*/0);
+
+ inode_lock_nested(h_tmpdir, AuLsc_I_PARENT3);
+ /* todo: au_h_open_pre()? */
+
+ pin_orig = cpg->pin;
+ au_pin_init(&wh_pin, dentry, bdst, AuLsc_DI_PARENT,
+ AuLsc_I_PARENT3, cpg->pin->udba, AuPin_DI_LOCKED);
+ cpg->pin = &wh_pin;
+ }
+
+ if (!au_test_h_perm_sio(h_tmpdir, MAY_EXEC | MAY_WRITE)
+ && !au_cpup_sio_test(cpg->pin, d_inode(dentry)->i_mode))
+ err = au_cpup_wh(cpg, file);
+ else {
+ struct au_cpup_wh_args args = {
+ .errp = &err,
+ .cpg = cpg,
+ .file = file
+ };
+ wkq_err = au_wkq_wait(au_call_cpup_wh, &args);
+ if (unlikely(wkq_err))
+ err = wkq_err;
+ }
+
+ if (h_orph) {
+ inode_unlock(h_tmpdir);
+ /* todo: au_h_open_post()? */
+ au_set_h_iptr(dir, bdst, au_igrab(h_dir), /*flags*/0);
+ au_set_h_dptr(parent, bdst, h_parent);
+ AuDebugOn(!pin_orig);
+ cpg->pin = pin_orig;
+ }
+ iput(h_dir);
+ dput(parent);
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * generic routine for both of copy-up and copy-down.
+ */
+/* cf. revalidate function in file.c */
+int au_cp_dirs(struct dentry *dentry, aufs_bindex_t bdst,
+ int (*cp)(struct dentry *dentry, aufs_bindex_t bdst,
+ struct au_pin *pin,
+ struct dentry *h_parent, void *arg),
+ void *arg)
+{
+ int err;
+ struct au_pin pin;
+ struct dentry *d, *parent, *h_parent, *real_parent, *h_dentry;
+
+ err = 0;
+ parent = dget_parent(dentry);
+ if (IS_ROOT(parent))
+ goto out;
+
+ au_pin_init(&pin, dentry, bdst, AuLsc_DI_PARENT2, AuLsc_I_PARENT2,
+ au_opt_udba(dentry->d_sb), AuPin_MNT_WRITE);
+
+ /* do not use au_dpage */
+ real_parent = parent;
+ while (1) {
+ dput(parent);
+ parent = dget_parent(dentry);
+ h_parent = au_h_dptr(parent, bdst);
+ if (h_parent)
+ goto out; /* success */
+
+ /* find top dir which is necessary to cpup */
+ do {
+ d = parent;
+ dput(parent);
+ parent = dget_parent(d);
+ di_read_lock_parent3(parent, !AuLock_IR);
+ h_parent = au_h_dptr(parent, bdst);
+ di_read_unlock(parent, !AuLock_IR);
+ } while (!h_parent);
+
+ if (d != real_parent)
+ di_write_lock_child3(d);
+
+ /* somebody else might create while we were sleeping */
+ h_dentry = au_h_dptr(d, bdst);
+ if (!h_dentry || d_is_negative(h_dentry)) {
+ if (h_dentry)
+ au_update_dbtop(d);
+
+ au_pin_set_dentry(&pin, d);
+ err = au_do_pin(&pin);
+ if (!err) {
+ err = cp(d, bdst, &pin, h_parent, arg);
+ au_unpin(&pin);
+ }
+ }
+
+ if (d != real_parent)
+ di_write_unlock(d);
+ if (unlikely(err))
+ break;
+ }
+
+out:
+ dput(parent);
+ return err;
+}
+
+static int au_cpup_dir(struct dentry *dentry, aufs_bindex_t bdst,
+ struct au_pin *pin,
+ struct dentry *h_parent __maybe_unused,
+ void *arg __maybe_unused)
+{
+ struct au_cp_generic cpg = {
+ .dentry = dentry,
+ .bdst = bdst,
+ .bsrc = -1,
+ .len = 0,
+ .pin = pin,
+ .flags = AuCpup_DTIME
+ };
+ return au_sio_cpup_simple(&cpg);
+}
+
+int au_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst)
+{
+ return au_cp_dirs(dentry, bdst, au_cpup_dir, NULL);
+}
+
+int au_test_and_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst)
+{
+ int err;
+ struct dentry *parent;
+ struct inode *dir;
+
+ parent = dget_parent(dentry);
+ dir = d_inode(parent);
+ err = 0;
+ if (au_h_iptr(dir, bdst))
+ goto out;
+
+ di_read_unlock(parent, AuLock_IR);
+ di_write_lock_parent(parent);
+ /* someone else might change our inode while we were sleeping */
+ if (!au_h_iptr(dir, bdst))
+ err = au_cpup_dirs(dentry, bdst);
+ di_downgrade_lock(parent, AuLock_IR);
+
+out:
+ dput(parent);
+ return err;
+}
diff --git a/fs/aufs/cpup.h b/fs/aufs/cpup.h
new file mode 100644
index 0000000000..abcbfbc55a
--- /dev/null
+++ b/fs/aufs/cpup.h
@@ -0,0 +1,100 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * copy-up/down functions
+ */
+
+#ifndef __AUFS_CPUP_H__
+#define __AUFS_CPUP_H__
+
+#ifdef __KERNEL__
+
+#include <linux/path.h>
+
+struct inode;
+struct file;
+struct au_pin;
+
+void au_cpup_attr_flags(struct inode *dst, unsigned int iflags);
+void au_cpup_attr_timesizes(struct inode *inode);
+void au_cpup_attr_nlink(struct inode *inode, int force);
+void au_cpup_attr_changeable(struct inode *inode);
+void au_cpup_igen(struct inode *inode, struct inode *h_inode);
+void au_cpup_attr_all(struct inode *inode, int force);
+
+/* ---------------------------------------------------------------------- */
+
+struct au_cp_generic {
+ struct dentry *dentry;
+ aufs_bindex_t bdst, bsrc;
+ loff_t len;
+ struct au_pin *pin;
+ unsigned int flags;
+};
+
+/* cpup flags */
+#define AuCpup_DTIME 1 /* do dtime_store/revert */
+#define AuCpup_KEEPLINO (1 << 1) /* do not clear the lower xino,
+ for link(2) */
+#define AuCpup_RENAME (1 << 2) /* rename after cpup */
+#define AuCpup_HOPEN (1 << 3) /* call h_open_pre/post() in
+ cpup */
+#define AuCpup_OVERWRITE (1 << 4) /* allow overwriting the
+ existing entry */
+#define AuCpup_RWDST (1 << 5) /* force write target even if
+ the branch is marked as RO */
+
+#ifndef CONFIG_AUFS_BR_HFSPLUS
+#undef AuCpup_HOPEN
+#define AuCpup_HOPEN 0
+#endif
+
+#define au_ftest_cpup(flags, name) ((flags) & AuCpup_##name)
+#define au_fset_cpup(flags, name) \
+ do { (flags) |= AuCpup_##name; } while (0)
+#define au_fclr_cpup(flags, name) \
+ do { (flags) &= ~AuCpup_##name; } while (0)
+
+int au_copy_file(struct file *dst, struct file *src, loff_t len);
+int au_sio_cpup_simple(struct au_cp_generic *cpg);
+int au_sio_cpdown_simple(struct au_cp_generic *cpg);
+int au_sio_cpup_wh(struct au_cp_generic *cpg, struct file *file);
+
+int au_cp_dirs(struct dentry *dentry, aufs_bindex_t bdst,
+ int (*cp)(struct dentry *dentry, aufs_bindex_t bdst,
+ struct au_pin *pin,
+ struct dentry *h_parent, void *arg),
+ void *arg);
+int au_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst);
+int au_test_and_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst);
+
+/* ---------------------------------------------------------------------- */
+
+/* keep timestamps when copyup */
+struct au_dtime {
+ struct dentry *dt_dentry;
+ struct path dt_h_path;
+ struct timespec64 dt_atime, dt_mtime;
+};
+void au_dtime_store(struct au_dtime *dt, struct dentry *dentry,
+ struct path *h_path);
+void au_dtime_revert(struct au_dtime *dt);
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_CPUP_H__ */
diff --git a/fs/aufs/dbgaufs.c b/fs/aufs/dbgaufs.c
new file mode 100644
index 0000000000..e32d91d1f6
--- /dev/null
+++ b/fs/aufs/dbgaufs.c
@@ -0,0 +1,526 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * debugfs interface
+ */
+
+#include <linux/debugfs.h>
+#include "aufs.h"
+
+#ifndef CONFIG_SYSFS
+#error DEBUG_FS depends upon SYSFS
+#endif
+
+static struct dentry *dbgaufs;
+static const mode_t dbgaufs_mode = 0444;
+
+/* 20 is max digits length of ulong 64 */
+struct dbgaufs_arg {
+ int n;
+ char a[20 * 4];
+};
+
+/*
+ * common function for all XINO files
+ */
+static int dbgaufs_xi_release(struct inode *inode __maybe_unused,
+ struct file *file)
+{
+ void *p;
+
+ p = file->private_data;
+ if (p) {
+ /* this is struct dbgaufs_arg */
+ AuDebugOn(!au_kfree_sz_test(p));
+ au_kfree_do_rcu(p);
+ }
+ return 0;
+}
+
+static int dbgaufs_xi_open(struct file *xf, struct file *file, int do_fcnt,
+ int cnt)
+{
+ int err;
+ struct kstat st;
+ struct dbgaufs_arg *p;
+
+ err = -ENOMEM;
+ p = kmalloc(sizeof(*p), GFP_NOFS);
+ if (unlikely(!p))
+ goto out;
+
+ err = 0;
+ p->n = 0;
+ file->private_data = p;
+ if (!xf)
+ goto out;
+
+ err = vfsub_getattr(&xf->f_path, &st);
+ if (!err) {
+ if (do_fcnt)
+ p->n = snprintf
+ (p->a, sizeof(p->a), "%d, %llux%u %lld\n",
+ cnt, st.blocks, st.blksize,
+ (long long)st.size);
+ else
+ p->n = snprintf(p->a, sizeof(p->a), "%llux%u %lld\n",
+ st.blocks, st.blksize,
+ (long long)st.size);
+ AuDebugOn(p->n >= sizeof(p->a));
+ } else {
+ p->n = snprintf(p->a, sizeof(p->a), "err %d\n", err);
+ err = 0;
+ }
+
+out:
+ return err;
+}
+
+static ssize_t dbgaufs_xi_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct dbgaufs_arg *p;
+
+ p = file->private_data;
+ return simple_read_from_buffer(buf, count, ppos, p->a, p->n);
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct dbgaufs_plink_arg {
+ int n;
+ char a[];
+};
+
+static int dbgaufs_plink_release(struct inode *inode __maybe_unused,
+ struct file *file)
+{
+ free_page((unsigned long)file->private_data);
+ return 0;
+}
+
+static int dbgaufs_plink_open(struct inode *inode, struct file *file)
+{
+ int err, i, limit;
+ unsigned long n, sum;
+ struct dbgaufs_plink_arg *p;
+ struct au_sbinfo *sbinfo;
+ struct super_block *sb;
+ struct hlist_bl_head *hbl;
+
+ err = -ENOMEM;
+ p = (void *)get_zeroed_page(GFP_NOFS);
+ if (unlikely(!p))
+ goto out;
+
+ err = -EFBIG;
+ sbinfo = inode->i_private;
+ sb = sbinfo->si_sb;
+ si_noflush_read_lock(sb);
+ if (au_opt_test(au_mntflags(sb), PLINK)) {
+ limit = PAGE_SIZE - sizeof(p->n);
+
+ /* the number of buckets */
+ n = snprintf(p->a + p->n, limit, "%d\n", AuPlink_NHASH);
+ p->n += n;
+ limit -= n;
+
+ sum = 0;
+ for (i = 0, hbl = sbinfo->si_plink; i < AuPlink_NHASH;
+ i++, hbl++) {
+ n = au_hbl_count(hbl);
+ sum += n;
+
+ n = snprintf(p->a + p->n, limit, "%lu ", n);
+ p->n += n;
+ limit -= n;
+ if (unlikely(limit <= 0))
+ goto out_free;
+ }
+ p->a[p->n - 1] = '\n';
+
+ /* the sum of plinks */
+ n = snprintf(p->a + p->n, limit, "%lu\n", sum);
+ p->n += n;
+ limit -= n;
+ if (unlikely(limit <= 0))
+ goto out_free;
+ } else {
+#define str "1\n0\n0\n"
+ p->n = sizeof(str) - 1;
+ strcpy(p->a, str);
+#undef str
+ }
+ si_read_unlock(sb);
+
+ err = 0;
+ file->private_data = p;
+ goto out; /* success */
+
+out_free:
+ free_page((unsigned long)p);
+out:
+ return err;
+}
+
+static ssize_t dbgaufs_plink_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct dbgaufs_plink_arg *p;
+
+ p = file->private_data;
+ return simple_read_from_buffer(buf, count, ppos, p->a, p->n);
+}
+
+static const struct file_operations dbgaufs_plink_fop = {
+ .owner = THIS_MODULE,
+ .open = dbgaufs_plink_open,
+ .release = dbgaufs_plink_release,
+ .read = dbgaufs_plink_read
+};
+
+/* ---------------------------------------------------------------------- */
+
+static int dbgaufs_xib_open(struct inode *inode, struct file *file)
+{
+ int err;
+ struct au_sbinfo *sbinfo;
+ struct super_block *sb;
+
+ sbinfo = inode->i_private;
+ sb = sbinfo->si_sb;
+ si_noflush_read_lock(sb);
+ err = dbgaufs_xi_open(sbinfo->si_xib, file, /*do_fcnt*/0, /*cnt*/0);
+ si_read_unlock(sb);
+ return err;
+}
+
+static const struct file_operations dbgaufs_xib_fop = {
+ .owner = THIS_MODULE,
+ .open = dbgaufs_xib_open,
+ .release = dbgaufs_xi_release,
+ .read = dbgaufs_xi_read
+};
+
+/* ---------------------------------------------------------------------- */
+
+#define DbgaufsXi_PREFIX "xi"
+
+static int dbgaufs_xino_open(struct inode *inode, struct file *file)
+{
+ int err, idx;
+ long l;
+ aufs_bindex_t bindex;
+ char *p, a[sizeof(DbgaufsXi_PREFIX) + 8];
+ struct au_sbinfo *sbinfo;
+ struct super_block *sb;
+ struct au_xino *xi;
+ struct file *xf;
+ struct qstr *name;
+ struct au_branch *br;
+
+ err = -ENOENT;
+ name = &file->f_path.dentry->d_name;
+ if (unlikely(name->len < sizeof(DbgaufsXi_PREFIX)
+ || memcmp(name->name, DbgaufsXi_PREFIX,
+ sizeof(DbgaufsXi_PREFIX) - 1)))
+ goto out;
+
+ AuDebugOn(name->len >= sizeof(a));
+ memcpy(a, name->name, name->len);
+ a[name->len] = '\0';
+ p = strchr(a, '-');
+ if (p)
+ *p = '\0';
+ err = kstrtol(a + sizeof(DbgaufsXi_PREFIX) - 1, 10, &l);
+ if (unlikely(err))
+ goto out;
+ bindex = l;
+ idx = 0;
+ if (p) {
+ err = kstrtol(p + 1, 10, &l);
+ if (unlikely(err))
+ goto out;
+ idx = l;
+ }
+
+ err = -ENOENT;
+ sbinfo = inode->i_private;
+ sb = sbinfo->si_sb;
+ si_noflush_read_lock(sb);
+ if (unlikely(bindex < 0 || bindex > au_sbbot(sb)))
+ goto out_si;
+ br = au_sbr(sb, bindex);
+ xi = br->br_xino;
+ if (unlikely(idx >= xi->xi_nfile))
+ goto out_si;
+ xf = au_xino_file(xi, idx);
+ if (xf)
+ err = dbgaufs_xi_open(xf, file, /*do_fcnt*/1,
+ au_xino_count(br));
+
+out_si:
+ si_read_unlock(sb);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+static const struct file_operations dbgaufs_xino_fop = {
+ .owner = THIS_MODULE,
+ .open = dbgaufs_xino_open,
+ .release = dbgaufs_xi_release,
+ .read = dbgaufs_xi_read
+};
+
+void dbgaufs_xino_del(struct au_branch *br)
+{
+ struct dentry *dbgaufs;
+
+ dbgaufs = br->br_dbgaufs;
+ if (!dbgaufs)
+ return;
+
+ br->br_dbgaufs = NULL;
+ /* debugfs acquires the parent i_mutex */
+ lockdep_off();
+ debugfs_remove(dbgaufs);
+ lockdep_on();
+}
+
+void dbgaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex)
+{
+ aufs_bindex_t bbot;
+ struct au_branch *br;
+
+ if (!au_sbi(sb)->si_dbgaufs)
+ return;
+
+ bbot = au_sbbot(sb);
+ for (; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ dbgaufs_xino_del(br);
+ }
+}
+
+static void dbgaufs_br_do_add(struct super_block *sb, aufs_bindex_t bindex,
+ unsigned int idx, struct dentry *parent,
+ struct au_sbinfo *sbinfo)
+{
+ struct au_branch *br;
+ struct dentry *d;
+ /* "xi" bindex(5) "-" idx(2) NULL */
+ char name[sizeof(DbgaufsXi_PREFIX) + 8];
+
+ if (!idx)
+ snprintf(name, sizeof(name), DbgaufsXi_PREFIX "%d", bindex);
+ else
+ snprintf(name, sizeof(name), DbgaufsXi_PREFIX "%d-%u",
+ bindex, idx);
+ br = au_sbr(sb, bindex);
+ if (br->br_dbgaufs) {
+ struct qstr qstr = QSTR_INIT(name, strlen(name));
+
+ if (!au_qstreq(&br->br_dbgaufs->d_name, &qstr)) {
+ /* debugfs acquires the parent i_mutex */
+ lockdep_off();
+ d = debugfs_rename(parent, br->br_dbgaufs, parent,
+ name);
+ lockdep_on();
+ if (unlikely(!d))
+ pr_warn("failed renaming %pd/%s, ignored.\n",
+ parent, name);
+ }
+ } else {
+ lockdep_off();
+ br->br_dbgaufs = debugfs_create_file(name, dbgaufs_mode, parent,
+ sbinfo, &dbgaufs_xino_fop);
+ lockdep_on();
+ if (unlikely(!br->br_dbgaufs))
+ pr_warn("failed creating %pd/%s, ignored.\n",
+ parent, name);
+ }
+}
+
+static void dbgaufs_br_add(struct super_block *sb, aufs_bindex_t bindex,
+ struct dentry *parent, struct au_sbinfo *sbinfo)
+{
+ struct au_branch *br;
+ struct au_xino *xi;
+ unsigned int u;
+
+ br = au_sbr(sb, bindex);
+ xi = br->br_xino;
+ for (u = 0; u < xi->xi_nfile; u++)
+ dbgaufs_br_do_add(sb, bindex, u, parent, sbinfo);
+}
+
+void dbgaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex, int topdown)
+{
+ struct au_sbinfo *sbinfo;
+ struct dentry *parent;
+ aufs_bindex_t bbot;
+
+ if (!au_opt_test(au_mntflags(sb), XINO))
+ return;
+
+ sbinfo = au_sbi(sb);
+ parent = sbinfo->si_dbgaufs;
+ if (!parent)
+ return;
+
+ bbot = au_sbbot(sb);
+ if (topdown)
+ for (; bindex <= bbot; bindex++)
+ dbgaufs_br_add(sb, bindex, parent, sbinfo);
+ else
+ for (; bbot >= bindex; bbot--)
+ dbgaufs_br_add(sb, bbot, parent, sbinfo);
+}
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_EXPORT
+static int dbgaufs_xigen_open(struct inode *inode, struct file *file)
+{
+ int err;
+ struct au_sbinfo *sbinfo;
+ struct super_block *sb;
+
+ sbinfo = inode->i_private;
+ sb = sbinfo->si_sb;
+ si_noflush_read_lock(sb);
+ err = dbgaufs_xi_open(sbinfo->si_xigen, file, /*do_fcnt*/0, /*cnt*/0);
+ si_read_unlock(sb);
+ return err;
+}
+
+static const struct file_operations dbgaufs_xigen_fop = {
+ .owner = THIS_MODULE,
+ .open = dbgaufs_xigen_open,
+ .release = dbgaufs_xi_release,
+ .read = dbgaufs_xi_read
+};
+
+static int dbgaufs_xigen_init(struct au_sbinfo *sbinfo)
+{
+ int err;
+
+ /*
+ * This function is a dynamic '__init' function actually,
+ * so the tiny check for si_rwsem is unnecessary.
+ */
+ /* AuRwMustWriteLock(&sbinfo->si_rwsem); */
+
+ err = -EIO;
+ sbinfo->si_dbgaufs_xigen = debugfs_create_file
+ ("xigen", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo,
+ &dbgaufs_xigen_fop);
+ if (sbinfo->si_dbgaufs_xigen)
+ err = 0;
+
+ return err;
+}
+#else
+static int dbgaufs_xigen_init(struct au_sbinfo *sbinfo)
+{
+ return 0;
+}
+#endif /* CONFIG_AUFS_EXPORT */
+
+/* ---------------------------------------------------------------------- */
+
+void dbgaufs_si_fin(struct au_sbinfo *sbinfo)
+{
+ /*
+ * This function is a dynamic '__fin' function actually,
+ * so the tiny check for si_rwsem is unnecessary.
+ */
+ /* AuRwMustWriteLock(&sbinfo->si_rwsem); */
+
+ debugfs_remove_recursive(sbinfo->si_dbgaufs);
+ sbinfo->si_dbgaufs = NULL;
+}
+
+int dbgaufs_si_init(struct au_sbinfo *sbinfo)
+{
+ int err;
+ char name[SysaufsSiNameLen];
+
+ /*
+ * This function is a dynamic '__init' function actually,
+ * so the tiny check for si_rwsem is unnecessary.
+ */
+ /* AuRwMustWriteLock(&sbinfo->si_rwsem); */
+
+ err = -ENOENT;
+ if (!dbgaufs) {
+ AuErr1("/debug/aufs is uninitialized\n");
+ goto out;
+ }
+
+ err = -EIO;
+ sysaufs_name(sbinfo, name);
+ sbinfo->si_dbgaufs = debugfs_create_dir(name, dbgaufs);
+ if (unlikely(!sbinfo->si_dbgaufs))
+ goto out;
+
+ /* regardless plink/noplink option */
+ sbinfo->si_dbgaufs_plink = debugfs_create_file
+ ("plink", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo,
+ &dbgaufs_plink_fop);
+ if (unlikely(!sbinfo->si_dbgaufs_plink))
+ goto out_dir;
+
+ /* regardless xino/noxino option */
+ sbinfo->si_dbgaufs_xib = debugfs_create_file
+ ("xib", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo,
+ &dbgaufs_xib_fop);
+ if (unlikely(!sbinfo->si_dbgaufs_xib))
+ goto out_dir;
+
+ err = dbgaufs_xigen_init(sbinfo);
+ if (!err)
+ goto out; /* success */
+
+out_dir:
+ dbgaufs_si_fin(sbinfo);
+out:
+ if (unlikely(err))
+ pr_err("debugfs/aufs failed\n");
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void dbgaufs_fin(void)
+{
+ debugfs_remove(dbgaufs);
+}
+
+int __init dbgaufs_init(void)
+{
+ int err;
+
+ err = -EIO;
+ dbgaufs = debugfs_create_dir(AUFS_NAME, NULL);
+ if (dbgaufs)
+ err = 0;
+ return err;
+}
diff --git a/fs/aufs/dbgaufs.h b/fs/aufs/dbgaufs.h
new file mode 100644
index 0000000000..1ea241bf02
--- /dev/null
+++ b/fs/aufs/dbgaufs.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * debugfs interface
+ */
+
+#ifndef __DBGAUFS_H__
+#define __DBGAUFS_H__
+
+#ifdef __KERNEL__
+
+struct super_block;
+struct au_sbinfo;
+struct au_branch;
+
+#ifdef CONFIG_DEBUG_FS
+/* dbgaufs.c */
+void dbgaufs_xino_del(struct au_branch *br);
+void dbgaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex);
+void dbgaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex, int topdown);
+void dbgaufs_si_fin(struct au_sbinfo *sbinfo);
+int dbgaufs_si_init(struct au_sbinfo *sbinfo);
+void dbgaufs_fin(void);
+int __init dbgaufs_init(void);
+#else
+AuStubVoid(dbgaufs_xino_del, struct au_branch *br)
+AuStubVoid(dbgaufs_brs_del, struct super_block *sb, aufs_bindex_t bindex)
+AuStubVoid(dbgaufs_brs_add, struct super_block *sb, aufs_bindex_t bindex,
+ int topdown)
+AuStubVoid(dbgaufs_si_fin, struct au_sbinfo *sbinfo)
+AuStubInt0(dbgaufs_si_init, struct au_sbinfo *sbinfo)
+AuStubVoid(dbgaufs_fin, void)
+AuStubInt0(__init dbgaufs_init, void)
+#endif /* CONFIG_DEBUG_FS */
+
+#endif /* __KERNEL__ */
+#endif /* __DBGAUFS_H__ */
diff --git a/fs/aufs/dcsub.c b/fs/aufs/dcsub.c
new file mode 100644
index 0000000000..0b91223076
--- /dev/null
+++ b/fs/aufs/dcsub.c
@@ -0,0 +1,225 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * sub-routines for dentry cache
+ */
+
+#include "aufs.h"
+
+static void au_dpage_free(struct au_dpage *dpage)
+{
+ int i;
+ struct dentry **p;
+
+ p = dpage->dentries;
+ for (i = 0; i < dpage->ndentry; i++)
+ dput(*p++);
+ free_page((unsigned long)dpage->dentries);
+}
+
+int au_dpages_init(struct au_dcsub_pages *dpages, gfp_t gfp)
+{
+ int err;
+ void *p;
+
+ err = -ENOMEM;
+ dpages->dpages = kmalloc(sizeof(*dpages->dpages), gfp);
+ if (unlikely(!dpages->dpages))
+ goto out;
+
+ p = (void *)__get_free_page(gfp);
+ if (unlikely(!p))
+ goto out_dpages;
+
+ dpages->dpages[0].ndentry = 0;
+ dpages->dpages[0].dentries = p;
+ dpages->ndpage = 1;
+ return 0; /* success */
+
+out_dpages:
+ au_kfree_try_rcu(dpages->dpages);
+out:
+ return err;
+}
+
+void au_dpages_free(struct au_dcsub_pages *dpages)
+{
+ int i;
+ struct au_dpage *p;
+
+ p = dpages->dpages;
+ for (i = 0; i < dpages->ndpage; i++)
+ au_dpage_free(p++);
+ au_kfree_try_rcu(dpages->dpages);
+}
+
+static int au_dpages_append(struct au_dcsub_pages *dpages,
+ struct dentry *dentry, gfp_t gfp)
+{
+ int err, sz;
+ struct au_dpage *dpage;
+ void *p;
+
+ dpage = dpages->dpages + dpages->ndpage - 1;
+ sz = PAGE_SIZE / sizeof(dentry);
+ if (unlikely(dpage->ndentry >= sz)) {
+ AuLabel(new dpage);
+ err = -ENOMEM;
+ sz = dpages->ndpage * sizeof(*dpages->dpages);
+ p = au_kzrealloc(dpages->dpages, sz,
+ sz + sizeof(*dpages->dpages), gfp,
+ /*may_shrink*/0);
+ if (unlikely(!p))
+ goto out;
+
+ dpages->dpages = p;
+ dpage = dpages->dpages + dpages->ndpage;
+ p = (void *)__get_free_page(gfp);
+ if (unlikely(!p))
+ goto out;
+
+ dpage->ndentry = 0;
+ dpage->dentries = p;
+ dpages->ndpage++;
+ }
+
+ AuDebugOn(au_dcount(dentry) <= 0);
+ dpage->dentries[dpage->ndentry++] = dget_dlock(dentry);
+ return 0; /* success */
+
+out:
+ return err;
+}
+
+/* todo: BAD approach */
+/* copied from linux/fs/dcache.c */
+enum d_walk_ret {
+ D_WALK_CONTINUE,
+ D_WALK_QUIT,
+ D_WALK_NORETRY,
+ D_WALK_SKIP,
+};
+
+extern void d_walk(struct dentry *parent, void *data,
+ enum d_walk_ret (*enter)(void *, struct dentry *));
+
+struct ac_dpages_arg {
+ int err;
+ struct au_dcsub_pages *dpages;
+ struct super_block *sb;
+ au_dpages_test test;
+ void *arg;
+};
+
+static enum d_walk_ret au_call_dpages_append(void *_arg, struct dentry *dentry)
+{
+ enum d_walk_ret ret;
+ struct ac_dpages_arg *arg = _arg;
+
+ ret = D_WALK_CONTINUE;
+ if (dentry->d_sb == arg->sb
+ && !IS_ROOT(dentry)
+ && au_dcount(dentry) > 0
+ && au_di(dentry)
+ && (!arg->test || arg->test(dentry, arg->arg))) {
+ arg->err = au_dpages_append(arg->dpages, dentry, GFP_ATOMIC);
+ if (unlikely(arg->err))
+ ret = D_WALK_QUIT;
+ }
+
+ return ret;
+}
+
+int au_dcsub_pages(struct au_dcsub_pages *dpages, struct dentry *root,
+ au_dpages_test test, void *arg)
+{
+ struct ac_dpages_arg args = {
+ .err = 0,
+ .dpages = dpages,
+ .sb = root->d_sb,
+ .test = test,
+ .arg = arg
+ };
+
+ d_walk(root, &args, au_call_dpages_append);
+
+ return args.err;
+}
+
+int au_dcsub_pages_rev(struct au_dcsub_pages *dpages, struct dentry *dentry,
+ int do_include, au_dpages_test test, void *arg)
+{
+ int err;
+
+ err = 0;
+ write_seqlock(&rename_lock);
+ spin_lock(&dentry->d_lock);
+ if (do_include
+ && au_dcount(dentry) > 0
+ && (!test || test(dentry, arg)))
+ err = au_dpages_append(dpages, dentry, GFP_ATOMIC);
+ spin_unlock(&dentry->d_lock);
+ if (unlikely(err))
+ goto out;
+
+ /*
+ * RCU for vfsmount is unnecessary since this is a traverse in a single
+ * mount
+ */
+ while (!IS_ROOT(dentry)) {
+ dentry = dentry->d_parent; /* rename_lock is locked */
+ spin_lock(&dentry->d_lock);
+ if (au_dcount(dentry) > 0
+ && (!test || test(dentry, arg)))
+ err = au_dpages_append(dpages, dentry, GFP_ATOMIC);
+ spin_unlock(&dentry->d_lock);
+ if (unlikely(err))
+ break;
+ }
+
+out:
+ write_sequnlock(&rename_lock);
+ return err;
+}
+
+static inline int au_dcsub_dpages_aufs(struct dentry *dentry, void *arg)
+{
+ return au_di(dentry) && dentry->d_sb == arg;
+}
+
+int au_dcsub_pages_rev_aufs(struct au_dcsub_pages *dpages,
+ struct dentry *dentry, int do_include)
+{
+ return au_dcsub_pages_rev(dpages, dentry, do_include,
+ au_dcsub_dpages_aufs, dentry->d_sb);
+}
+
+int au_test_subdir(struct dentry *d1, struct dentry *d2)
+{
+ struct path path[2] = {
+ {
+ .dentry = d1
+ },
+ {
+ .dentry = d2
+ }
+ };
+
+ return path_is_under(path + 0, path + 1);
+}
diff --git a/fs/aufs/dcsub.h b/fs/aufs/dcsub.h
new file mode 100644
index 0000000000..5e578995c2
--- /dev/null
+++ b/fs/aufs/dcsub.h
@@ -0,0 +1,137 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * sub-routines for dentry cache
+ */
+
+#ifndef __AUFS_DCSUB_H__
+#define __AUFS_DCSUB_H__
+
+#ifdef __KERNEL__
+
+#include <linux/dcache.h>
+#include <linux/fs.h>
+
+struct au_dpage {
+ int ndentry;
+ struct dentry **dentries;
+};
+
+struct au_dcsub_pages {
+ int ndpage;
+ struct au_dpage *dpages;
+};
+
+/* ---------------------------------------------------------------------- */
+
+/* dcsub.c */
+int au_dpages_init(struct au_dcsub_pages *dpages, gfp_t gfp);
+void au_dpages_free(struct au_dcsub_pages *dpages);
+typedef int (*au_dpages_test)(struct dentry *dentry, void *arg);
+int au_dcsub_pages(struct au_dcsub_pages *dpages, struct dentry *root,
+ au_dpages_test test, void *arg);
+int au_dcsub_pages_rev(struct au_dcsub_pages *dpages, struct dentry *dentry,
+ int do_include, au_dpages_test test, void *arg);
+int au_dcsub_pages_rev_aufs(struct au_dcsub_pages *dpages,
+ struct dentry *dentry, int do_include);
+int au_test_subdir(struct dentry *d1, struct dentry *d2);
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * todo: in linux-3.13, several similar (but faster) helpers are added to
+ * include/linux/dcache.h. Try them (in the future).
+ */
+
+static inline int au_d_hashed_positive(struct dentry *d)
+{
+ int err;
+ struct inode *inode = d_inode(d);
+
+ err = 0;
+ if (unlikely(d_unhashed(d)
+ || d_is_negative(d)
+ || !inode->i_nlink))
+ err = -ENOENT;
+ return err;
+}
+
+static inline int au_d_linkable(struct dentry *d)
+{
+ int err;
+ struct inode *inode = d_inode(d);
+
+ err = au_d_hashed_positive(d);
+ if (err
+ && d_is_positive(d)
+ && (inode->i_state & I_LINKABLE))
+ err = 0;
+ return err;
+}
+
+static inline int au_d_alive(struct dentry *d)
+{
+ int err;
+ struct inode *inode;
+
+ err = 0;
+ if (!IS_ROOT(d))
+ err = au_d_hashed_positive(d);
+ else {
+ inode = d_inode(d);
+ if (unlikely(d_unlinked(d)
+ || d_is_negative(d)
+ || !inode->i_nlink))
+ err = -ENOENT;
+ }
+ return err;
+}
+
+static inline int au_alive_dir(struct dentry *d)
+{
+ int err;
+
+ err = au_d_alive(d);
+ if (unlikely(err || IS_DEADDIR(d_inode(d))))
+ err = -ENOENT;
+ return err;
+}
+
+static inline int au_qstreq(struct qstr *a, struct qstr *b)
+{
+ return a->len == b->len
+ && !memcmp(a->name, b->name, a->len);
+}
+
+/*
+ * by the commit
+ * 360f547 2015-01-25 dcache: let the dentry count go down to zero without
+ * taking d_lock
+ * the type of d_lockref.count became int, but the inlined function d_count()
+ * still returns unsigned int.
+ * I don't know why. Maybe it is for every d_count() users?
+ * Anyway au_dcount() lives on.
+ */
+static inline int au_dcount(struct dentry *d)
+{
+ return (int)d_count(d);
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_DCSUB_H__ */
diff --git a/fs/aufs/debug.c b/fs/aufs/debug.c
new file mode 100644
index 0000000000..b93bb4f565
--- /dev/null
+++ b/fs/aufs/debug.c
@@ -0,0 +1,441 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * debug print functions
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+/* Returns 0, or -errno. arg is in kp->arg. */
+static int param_atomic_t_set(const char *val, const struct kernel_param *kp)
+{
+ int err, n;
+
+ err = kstrtoint(val, 0, &n);
+ if (!err) {
+ if (n > 0)
+ au_debug_on();
+ else
+ au_debug_off();
+ }
+ return err;
+}
+
+/* Returns length written or -errno. Buffer is 4k (ie. be short!) */
+static int param_atomic_t_get(char *buffer, const struct kernel_param *kp)
+{
+ atomic_t *a;
+
+ a = kp->arg;
+ return sprintf(buffer, "%d", atomic_read(a));
+}
+
+static struct kernel_param_ops param_ops_atomic_t = {
+ .set = param_atomic_t_set,
+ .get = param_atomic_t_get
+ /* void (*free)(void *arg) */
+};
+
+atomic_t aufs_debug = ATOMIC_INIT(0);
+MODULE_PARM_DESC(debug, "debug print");
+module_param_named(debug, aufs_debug, atomic_t, 0664);
+
+DEFINE_MUTEX(au_dbg_mtx); /* just to serialize the dbg msgs */
+char *au_plevel = KERN_DEBUG;
+#define dpri(fmt, ...) do { \
+ if ((au_plevel \
+ && strcmp(au_plevel, KERN_DEBUG)) \
+ || au_debug_test()) \
+ printk("%s" fmt, au_plevel, ##__VA_ARGS__); \
+} while (0)
+
+/* ---------------------------------------------------------------------- */
+
+void au_dpri_whlist(struct au_nhash *whlist)
+{
+ unsigned long ul, n;
+ struct hlist_head *head;
+ struct au_vdir_wh *pos;
+
+ n = whlist->nh_num;
+ head = whlist->nh_head;
+ for (ul = 0; ul < n; ul++) {
+ hlist_for_each_entry(pos, head, wh_hash)
+ dpri("b%d, %.*s, %d\n",
+ pos->wh_bindex,
+ pos->wh_str.len, pos->wh_str.name,
+ pos->wh_str.len);
+ head++;
+ }
+}
+
+void au_dpri_vdir(struct au_vdir *vdir)
+{
+ unsigned long ul;
+ union au_vdir_deblk_p p;
+ unsigned char *o;
+
+ if (!vdir || IS_ERR(vdir)) {
+ dpri("err %ld\n", PTR_ERR(vdir));
+ return;
+ }
+
+ dpri("deblk %u, nblk %lu, deblk %p, last{%lu, %p}, ver %llu\n",
+ vdir->vd_deblk_sz, vdir->vd_nblk, vdir->vd_deblk,
+ vdir->vd_last.ul, vdir->vd_last.p.deblk, vdir->vd_version);
+ for (ul = 0; ul < vdir->vd_nblk; ul++) {
+ p.deblk = vdir->vd_deblk[ul];
+ o = p.deblk;
+ dpri("[%lu]: %p\n", ul, o);
+ }
+}
+
+static int do_pri_inode(aufs_bindex_t bindex, struct inode *inode, int hn,
+ struct dentry *wh)
+{
+ char *n = NULL;
+ int l = 0;
+
+ if (!inode || IS_ERR(inode)) {
+ dpri("i%d: err %ld\n", bindex, PTR_ERR(inode));
+ return -1;
+ }
+
+ /* the type of i_blocks depends upon CONFIG_LBDAF */
+ BUILD_BUG_ON(sizeof(inode->i_blocks) != sizeof(unsigned long)
+ && sizeof(inode->i_blocks) != sizeof(u64));
+ if (wh) {
+ n = (void *)wh->d_name.name;
+ l = wh->d_name.len;
+ }
+
+ dpri("i%d: %p, i%lu, %s, cnt %d, nl %u, 0%o, sz %llu, blk %llu,"
+ " hn %d, ct %lld, np %lu, st 0x%lx, f 0x%x, v %llu, g %x%s%.*s\n",
+ bindex, inode,
+ inode->i_ino, inode->i_sb ? au_sbtype(inode->i_sb) : "??",
+ atomic_read(&inode->i_count), inode->i_nlink, inode->i_mode,
+ i_size_read(inode), (unsigned long long)inode->i_blocks,
+ hn, (long long)timespec64_to_ns(&inode->i_ctime) & 0x0ffff,
+ inode->i_mapping ? inode->i_mapping->nrpages : 0,
+ inode->i_state, inode->i_flags, inode_peek_iversion(inode),
+ inode->i_generation,
+ l ? ", wh " : "", l, n);
+ return 0;
+}
+
+void au_dpri_inode(struct inode *inode)
+{
+ struct au_iinfo *iinfo;
+ struct au_hinode *hi;
+ aufs_bindex_t bindex;
+ int err, hn;
+
+ err = do_pri_inode(-1, inode, -1, NULL);
+ if (err || !au_test_aufs(inode->i_sb) || au_is_bad_inode(inode))
+ return;
+
+ iinfo = au_ii(inode);
+ dpri("i-1: btop %d, bbot %d, gen %d\n",
+ iinfo->ii_btop, iinfo->ii_bbot, au_iigen(inode, NULL));
+ if (iinfo->ii_btop < 0)
+ return;
+ hn = 0;
+ for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot; bindex++) {
+ hi = au_hinode(iinfo, bindex);
+ hn = !!au_hn(hi);
+ do_pri_inode(bindex, hi->hi_inode, hn, hi->hi_whdentry);
+ }
+}
+
+void au_dpri_dalias(struct inode *inode)
+{
+ struct dentry *d;
+
+ spin_lock(&inode->i_lock);
+ hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias)
+ au_dpri_dentry(d);
+ spin_unlock(&inode->i_lock);
+}
+
+static int do_pri_dentry(aufs_bindex_t bindex, struct dentry *dentry)
+{
+ struct dentry *wh = NULL;
+ int hn;
+ struct inode *inode;
+ struct au_iinfo *iinfo;
+ struct au_hinode *hi;
+
+ if (!dentry || IS_ERR(dentry)) {
+ dpri("d%d: err %ld\n", bindex, PTR_ERR(dentry));
+ return -1;
+ }
+ /* do not call dget_parent() here */
+ /* note: access d_xxx without d_lock */
+ dpri("d%d: %p, %pd2?, %s, cnt %d, flags 0x%x, %shashed\n",
+ bindex, dentry, dentry,
+ dentry->d_sb ? au_sbtype(dentry->d_sb) : "??",
+ au_dcount(dentry), dentry->d_flags,
+ d_unhashed(dentry) ? "un" : "");
+ hn = -1;
+ inode = NULL;
+ if (d_is_positive(dentry))
+ inode = d_inode(dentry);
+ if (inode
+ && au_test_aufs(dentry->d_sb)
+ && bindex >= 0
+ && !au_is_bad_inode(inode)) {
+ iinfo = au_ii(inode);
+ hi = au_hinode(iinfo, bindex);
+ hn = !!au_hn(hi);
+ wh = hi->hi_whdentry;
+ }
+ do_pri_inode(bindex, inode, hn, wh);
+ return 0;
+}
+
+void au_dpri_dentry(struct dentry *dentry)
+{
+ struct au_dinfo *dinfo;
+ aufs_bindex_t bindex;
+ int err;
+
+ err = do_pri_dentry(-1, dentry);
+ if (err || !au_test_aufs(dentry->d_sb))
+ return;
+
+ dinfo = au_di(dentry);
+ if (!dinfo)
+ return;
+ dpri("d-1: btop %d, bbot %d, bwh %d, bdiropq %d, gen %d, tmp %d\n",
+ dinfo->di_btop, dinfo->di_bbot,
+ dinfo->di_bwh, dinfo->di_bdiropq, au_digen(dentry),
+ dinfo->di_tmpfile);
+ if (dinfo->di_btop < 0)
+ return;
+ for (bindex = dinfo->di_btop; bindex <= dinfo->di_bbot; bindex++)
+ do_pri_dentry(bindex, au_hdentry(dinfo, bindex)->hd_dentry);
+}
+
+static int do_pri_file(aufs_bindex_t bindex, struct file *file)
+{
+ char a[32];
+
+ if (!file || IS_ERR(file)) {
+ dpri("f%d: err %ld\n", bindex, PTR_ERR(file));
+ return -1;
+ }
+ a[0] = 0;
+ if (bindex < 0
+ && !IS_ERR_OR_NULL(file->f_path.dentry)
+ && au_test_aufs(file->f_path.dentry->d_sb)
+ && au_fi(file))
+ snprintf(a, sizeof(a), ", gen %d, mmapped %d",
+ au_figen(file), atomic_read(&au_fi(file)->fi_mmapped));
+ dpri("f%d: mode 0x%x, flags 0%o, cnt %ld, v %llu, pos %llu%s\n",
+ bindex, file->f_mode, file->f_flags, (long)file_count(file),
+ file->f_version, file->f_pos, a);
+ if (!IS_ERR_OR_NULL(file->f_path.dentry))
+ do_pri_dentry(bindex, file->f_path.dentry);
+ return 0;
+}
+
+void au_dpri_file(struct file *file)
+{
+ struct au_finfo *finfo;
+ struct au_fidir *fidir;
+ struct au_hfile *hfile;
+ aufs_bindex_t bindex;
+ int err;
+
+ err = do_pri_file(-1, file);
+ if (err
+ || IS_ERR_OR_NULL(file->f_path.dentry)
+ || !au_test_aufs(file->f_path.dentry->d_sb))
+ return;
+
+ finfo = au_fi(file);
+ if (!finfo)
+ return;
+ if (finfo->fi_btop < 0)
+ return;
+ fidir = finfo->fi_hdir;
+ if (!fidir)
+ do_pri_file(finfo->fi_btop, finfo->fi_htop.hf_file);
+ else
+ for (bindex = finfo->fi_btop;
+ bindex >= 0 && bindex <= fidir->fd_bbot;
+ bindex++) {
+ hfile = fidir->fd_hfile + bindex;
+ do_pri_file(bindex, hfile ? hfile->hf_file : NULL);
+ }
+}
+
+static int do_pri_br(aufs_bindex_t bindex, struct au_branch *br)
+{
+ struct vfsmount *mnt;
+ struct super_block *sb;
+
+ if (!br || IS_ERR(br))
+ goto out;
+ mnt = au_br_mnt(br);
+ if (!mnt || IS_ERR(mnt))
+ goto out;
+ sb = mnt->mnt_sb;
+ if (!sb || IS_ERR(sb))
+ goto out;
+
+ dpri("s%d: {perm 0x%x, id %d, wbr %p}, "
+ "%s, dev 0x%02x%02x, flags 0x%lx, cnt %d, active %d, "
+ "xino %d\n",
+ bindex, br->br_perm, br->br_id, br->br_wbr,
+ au_sbtype(sb), MAJOR(sb->s_dev), MINOR(sb->s_dev),
+ sb->s_flags, sb->s_count,
+ atomic_read(&sb->s_active),
+ !!au_xino_file(br->br_xino, /*idx*/-1));
+ return 0;
+
+out:
+ dpri("s%d: err %ld\n", bindex, PTR_ERR(br));
+ return -1;
+}
+
+void au_dpri_sb(struct super_block *sb)
+{
+ struct au_sbinfo *sbinfo;
+ aufs_bindex_t bindex;
+ int err;
+ /* to reduce stack size */
+ struct {
+ struct vfsmount mnt;
+ struct au_branch fake;
+ } *a;
+
+ /* this function can be called from magic sysrq */
+ a = kzalloc(sizeof(*a), GFP_ATOMIC);
+ if (unlikely(!a)) {
+ dpri("no memory\n");
+ return;
+ }
+
+ a->mnt.mnt_sb = sb;
+ a->fake.br_path.mnt = &a->mnt;
+ err = do_pri_br(-1, &a->fake);
+ au_kfree_rcu(a);
+ dpri("dev 0x%x\n", sb->s_dev);
+ if (err || !au_test_aufs(sb))
+ return;
+
+ sbinfo = au_sbi(sb);
+ if (!sbinfo)
+ return;
+ dpri("nw %d, gen %u, kobj %d\n",
+ atomic_read(&sbinfo->si_nowait.nw_len), sbinfo->si_generation,
+ kref_read(&sbinfo->si_kobj.kref));
+ for (bindex = 0; bindex <= sbinfo->si_bbot; bindex++)
+ do_pri_br(bindex, sbinfo->si_branch[0 + bindex]);
+}
+
+/* ---------------------------------------------------------------------- */
+
+void __au_dbg_verify_dinode(struct dentry *dentry, const char *func, int line)
+{
+ struct inode *h_inode, *inode = d_inode(dentry);
+ struct dentry *h_dentry;
+ aufs_bindex_t bindex, bbot, bi;
+
+ if (!inode /* || au_di(dentry)->di_lsc == AuLsc_DI_TMP */)
+ return;
+
+ bbot = au_dbbot(dentry);
+ bi = au_ibbot(inode);
+ if (bi < bbot)
+ bbot = bi;
+ bindex = au_dbtop(dentry);
+ bi = au_ibtop(inode);
+ if (bi > bindex)
+ bindex = bi;
+
+ for (; bindex <= bbot; bindex++) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (!h_dentry)
+ continue;
+ h_inode = au_h_iptr(inode, bindex);
+ if (unlikely(h_inode != d_inode(h_dentry))) {
+ au_debug_on();
+ AuDbg("b%d, %s:%d\n", bindex, func, line);
+ AuDbgDentry(dentry);
+ AuDbgInode(inode);
+ au_debug_off();
+ BUG();
+ }
+ }
+}
+
+void au_dbg_verify_gen(struct dentry *parent, unsigned int sigen)
+{
+ int err, i, j;
+ struct au_dcsub_pages dpages;
+ struct au_dpage *dpage;
+ struct dentry **dentries;
+
+ err = au_dpages_init(&dpages, GFP_NOFS);
+ AuDebugOn(err);
+ err = au_dcsub_pages_rev_aufs(&dpages, parent, /*do_include*/1);
+ AuDebugOn(err);
+ for (i = dpages.ndpage - 1; !err && i >= 0; i--) {
+ dpage = dpages.dpages + i;
+ dentries = dpage->dentries;
+ for (j = dpage->ndentry - 1; !err && j >= 0; j--)
+ AuDebugOn(au_digen_test(dentries[j], sigen));
+ }
+ au_dpages_free(&dpages);
+}
+
+void au_dbg_verify_kthread(void)
+{
+ if (au_wkq_test()) {
+ au_dbg_blocked();
+ /*
+ * It may be recursive, but udba=notify between two aufs mounts,
+ * where a single ro branch is shared, is not a problem.
+ */
+ /* WARN_ON(1); */
+ }
+}
+
+/* ---------------------------------------------------------------------- */
+
+int __init au_debug_init(void)
+{
+ aufs_bindex_t bindex;
+ struct au_vdir_destr destr;
+
+ bindex = -1;
+ AuDebugOn(bindex >= 0);
+
+ destr.len = -1;
+ AuDebugOn(destr.len < NAME_MAX);
+
+#ifdef CONFIG_4KSTACKS
+ pr_warn("CONFIG_4KSTACKS is defined.\n");
+#endif
+
+ return 0;
+}
diff --git a/fs/aufs/debug.h b/fs/aufs/debug.h
new file mode 100644
index 0000000000..9c52470a61
--- /dev/null
+++ b/fs/aufs/debug.h
@@ -0,0 +1,226 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * debug print functions
+ */
+
+#ifndef __AUFS_DEBUG_H__
+#define __AUFS_DEBUG_H__
+
+#ifdef __KERNEL__
+
+#include <linux/atomic.h>
+#include <linux/module.h>
+#include <linux/kallsyms.h>
+#include <linux/sysrq.h>
+
+#ifdef CONFIG_AUFS_DEBUG
+#define AuDebugOn(a) BUG_ON(a)
+
+/* module parameter */
+extern atomic_t aufs_debug;
+static inline void au_debug_on(void)
+{
+ atomic_inc(&aufs_debug);
+}
+static inline void au_debug_off(void)
+{
+ atomic_dec_if_positive(&aufs_debug);
+}
+
+static inline int au_debug_test(void)
+{
+ return atomic_read(&aufs_debug) > 0;
+}
+#else
+#define AuDebugOn(a) do {} while (0)
+AuStubVoid(au_debug_on, void)
+AuStubVoid(au_debug_off, void)
+AuStubInt0(au_debug_test, void)
+#endif /* CONFIG_AUFS_DEBUG */
+
+#define param_check_atomic_t(name, p) __param_check(name, p, atomic_t)
+
+/* ---------------------------------------------------------------------- */
+
+/* debug print */
+
+#define AuDbg(fmt, ...) do { \
+ if (au_debug_test()) \
+ pr_debug("DEBUG: " fmt, ##__VA_ARGS__); \
+} while (0)
+#define AuLabel(l) AuDbg(#l "\n")
+#define AuIOErr(fmt, ...) pr_err("I/O Error, " fmt, ##__VA_ARGS__)
+#define AuWarn1(fmt, ...) do { \
+ static unsigned char _c; \
+ if (!_c++) \
+ pr_warn(fmt, ##__VA_ARGS__); \
+} while (0)
+
+#define AuErr1(fmt, ...) do { \
+ static unsigned char _c; \
+ if (!_c++) \
+ pr_err(fmt, ##__VA_ARGS__); \
+} while (0)
+
+#define AuIOErr1(fmt, ...) do { \
+ static unsigned char _c; \
+ if (!_c++) \
+ AuIOErr(fmt, ##__VA_ARGS__); \
+} while (0)
+
+#define AuUnsupportMsg "This operation is not supported." \
+ " Please report this application to aufs-users ML."
+#define AuUnsupport(fmt, ...) do { \
+ pr_err(AuUnsupportMsg "\n" fmt, ##__VA_ARGS__); \
+ dump_stack(); \
+} while (0)
+
+#define AuTraceErr(e) do { \
+ if (unlikely((e) < 0)) \
+ AuDbg("err %d\n", (int)(e)); \
+} while (0)
+
+#define AuTraceErrPtr(p) do { \
+ if (IS_ERR(p)) \
+ AuDbg("err %ld\n", PTR_ERR(p)); \
+} while (0)
+
+/* dirty macros for debug print, use with "%.*s" and caution */
+#define AuLNPair(qstr) (qstr)->len, (qstr)->name
+
+/* ---------------------------------------------------------------------- */
+
+struct dentry;
+#ifdef CONFIG_AUFS_DEBUG
+extern struct mutex au_dbg_mtx;
+extern char *au_plevel;
+struct au_nhash;
+void au_dpri_whlist(struct au_nhash *whlist);
+struct au_vdir;
+void au_dpri_vdir(struct au_vdir *vdir);
+struct inode;
+void au_dpri_inode(struct inode *inode);
+void au_dpri_dalias(struct inode *inode);
+void au_dpri_dentry(struct dentry *dentry);
+struct file;
+void au_dpri_file(struct file *filp);
+struct super_block;
+void au_dpri_sb(struct super_block *sb);
+
+#define au_dbg_verify_dinode(d) __au_dbg_verify_dinode(d, __func__, __LINE__)
+void __au_dbg_verify_dinode(struct dentry *dentry, const char *func, int line);
+void au_dbg_verify_gen(struct dentry *parent, unsigned int sigen);
+void au_dbg_verify_kthread(void);
+
+int __init au_debug_init(void);
+
+#define AuDbgWhlist(w) do { \
+ mutex_lock(&au_dbg_mtx); \
+ AuDbg(#w "\n"); \
+ au_dpri_whlist(w); \
+ mutex_unlock(&au_dbg_mtx); \
+} while (0)
+
+#define AuDbgVdir(v) do { \
+ mutex_lock(&au_dbg_mtx); \
+ AuDbg(#v "\n"); \
+ au_dpri_vdir(v); \
+ mutex_unlock(&au_dbg_mtx); \
+} while (0)
+
+#define AuDbgInode(i) do { \
+ mutex_lock(&au_dbg_mtx); \
+ AuDbg(#i "\n"); \
+ au_dpri_inode(i); \
+ mutex_unlock(&au_dbg_mtx); \
+} while (0)
+
+#define AuDbgDAlias(i) do { \
+ mutex_lock(&au_dbg_mtx); \
+ AuDbg(#i "\n"); \
+ au_dpri_dalias(i); \
+ mutex_unlock(&au_dbg_mtx); \
+} while (0)
+
+#define AuDbgDentry(d) do { \
+ mutex_lock(&au_dbg_mtx); \
+ AuDbg(#d "\n"); \
+ au_dpri_dentry(d); \
+ mutex_unlock(&au_dbg_mtx); \
+} while (0)
+
+#define AuDbgFile(f) do { \
+ mutex_lock(&au_dbg_mtx); \
+ AuDbg(#f "\n"); \
+ au_dpri_file(f); \
+ mutex_unlock(&au_dbg_mtx); \
+} while (0)
+
+#define AuDbgSb(sb) do { \
+ mutex_lock(&au_dbg_mtx); \
+ AuDbg(#sb "\n"); \
+ au_dpri_sb(sb); \
+ mutex_unlock(&au_dbg_mtx); \
+} while (0)
+
+#define AuDbgSym(addr) do { \
+ char sym[KSYM_SYMBOL_LEN]; \
+ sprint_symbol(sym, (unsigned long)addr); \
+ AuDbg("%s\n", sym); \
+} while (0)
+#else
+AuStubVoid(au_dbg_verify_dinode, struct dentry *dentry)
+AuStubVoid(au_dbg_verify_gen, struct dentry *parent, unsigned int sigen)
+AuStubVoid(au_dbg_verify_kthread, void)
+AuStubInt0(__init au_debug_init, void)
+
+#define AuDbgWhlist(w) do {} while (0)
+#define AuDbgVdir(v) do {} while (0)
+#define AuDbgInode(i) do {} while (0)
+#define AuDbgDAlias(i) do {} while (0)
+#define AuDbgDentry(d) do {} while (0)
+#define AuDbgFile(f) do {} while (0)
+#define AuDbgSb(sb) do {} while (0)
+#define AuDbgSym(addr) do {} while (0)
+#endif /* CONFIG_AUFS_DEBUG */
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_MAGIC_SYSRQ
+int __init au_sysrq_init(void);
+void au_sysrq_fin(void);
+
+#ifdef CONFIG_HW_CONSOLE
+#define au_dbg_blocked() do { \
+ WARN_ON(1); \
+ handle_sysrq('w'); \
+} while (0)
+#else
+AuStubVoid(au_dbg_blocked, void)
+#endif
+
+#else
+AuStubInt0(__init au_sysrq_init, void)
+AuStubVoid(au_sysrq_fin, void)
+AuStubVoid(au_dbg_blocked, void)
+#endif /* CONFIG_AUFS_MAGIC_SYSRQ */
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_DEBUG_H__ */
diff --git a/fs/aufs/dentry.c b/fs/aufs/dentry.c
new file mode 100644
index 0000000000..faf664508e
--- /dev/null
+++ b/fs/aufs/dentry.c
@@ -0,0 +1,1154 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * lookup and dentry operations
+ */
+
+#include <linux/iversion.h>
+#include <linux/namei.h>
+#include "aufs.h"
+
+/*
+ * returns positive/negative dentry, NULL or an error.
+ * NULL means whiteout-ed or not-found.
+ */
+static struct dentry*
+au_do_lookup(struct dentry *h_parent, struct dentry *dentry,
+ aufs_bindex_t bindex, struct au_do_lookup_args *args)
+{
+ struct dentry *h_dentry;
+ struct inode *h_inode;
+ struct au_branch *br;
+ int wh_found, opq;
+ unsigned char wh_able;
+ const unsigned char allow_neg = !!au_ftest_lkup(args->flags, ALLOW_NEG);
+ const unsigned char ignore_perm = !!au_ftest_lkup(args->flags,
+ IGNORE_PERM);
+
+ wh_found = 0;
+ br = au_sbr(dentry->d_sb, bindex);
+ wh_able = !!au_br_whable(br->br_perm);
+ if (wh_able)
+ wh_found = au_wh_test(h_parent, &args->whname, ignore_perm);
+ h_dentry = ERR_PTR(wh_found);
+ if (!wh_found)
+ goto real_lookup;
+ if (unlikely(wh_found < 0))
+ goto out;
+
+ /* We found a whiteout */
+ /* au_set_dbbot(dentry, bindex); */
+ au_set_dbwh(dentry, bindex);
+ if (!allow_neg)
+ return NULL; /* success */
+
+real_lookup:
+ if (!ignore_perm)
+ h_dentry = vfsub_lkup_one(args->name, h_parent);
+ else
+ h_dentry = au_sio_lkup_one(args->name, h_parent);
+ if (IS_ERR(h_dentry)) {
+ if (PTR_ERR(h_dentry) == -ENAMETOOLONG
+ && !allow_neg)
+ h_dentry = NULL;
+ goto out;
+ }
+
+ h_inode = d_inode(h_dentry);
+ if (d_is_negative(h_dentry)) {
+ if (!allow_neg)
+ goto out_neg;
+ } else if (wh_found
+ || (args->type && args->type != (h_inode->i_mode & S_IFMT)))
+ goto out_neg;
+ else if (au_ftest_lkup(args->flags, DIRREN)
+ /* && h_inode */
+ && !au_dr_lkup_h_ino(args, bindex, h_inode->i_ino)) {
+ AuDbg("b%d %pd ignored hi%llu\n", bindex, h_dentry,
+ (unsigned long long)h_inode->i_ino);
+ goto out_neg;
+ }
+
+ if (au_dbbot(dentry) <= bindex)
+ au_set_dbbot(dentry, bindex);
+ if (au_dbtop(dentry) < 0 || bindex < au_dbtop(dentry))
+ au_set_dbtop(dentry, bindex);
+ au_set_h_dptr(dentry, bindex, h_dentry);
+
+ if (!d_is_dir(h_dentry)
+ || !wh_able
+ || (d_really_is_positive(dentry) && !d_is_dir(dentry)))
+ goto out; /* success */
+
+ inode_lock_shared_nested(h_inode, AuLsc_I_CHILD);
+ opq = au_diropq_test(h_dentry);
+ inode_unlock_shared(h_inode);
+ if (opq > 0)
+ au_set_dbdiropq(dentry, bindex);
+ else if (unlikely(opq < 0)) {
+ au_set_h_dptr(dentry, bindex, NULL);
+ h_dentry = ERR_PTR(opq);
+ }
+ goto out;
+
+out_neg:
+ dput(h_dentry);
+ h_dentry = NULL;
+out:
+ return h_dentry;
+}
+
+static int au_test_shwh(struct super_block *sb, const struct qstr *name)
+{
+ if (unlikely(!au_opt_test(au_mntflags(sb), SHWH)
+ && !strncmp(name->name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)))
+ return -EPERM;
+ return 0;
+}
+
+/*
+ * returns the number of lower positive dentries,
+ * otherwise an error.
+ * can be called at unlinking with @type is zero.
+ */
+int au_lkup_dentry(struct dentry *dentry, aufs_bindex_t btop,
+ unsigned int flags)
+{
+ int npositive, err;
+ aufs_bindex_t bindex, btail, bdiropq;
+ unsigned char isdir, dirperm1, dirren;
+ struct au_do_lookup_args args = {
+ .flags = flags,
+ .name = &dentry->d_name
+ };
+ struct dentry *parent;
+ struct super_block *sb;
+
+ sb = dentry->d_sb;
+ err = au_test_shwh(sb, args.name);
+ if (unlikely(err))
+ goto out;
+
+ err = au_wh_name_alloc(&args.whname, args.name);
+ if (unlikely(err))
+ goto out;
+
+ isdir = !!d_is_dir(dentry);
+ dirperm1 = !!au_opt_test(au_mntflags(sb), DIRPERM1);
+ dirren = !!au_opt_test(au_mntflags(sb), DIRREN);
+ if (dirren)
+ au_fset_lkup(args.flags, DIRREN);
+
+ npositive = 0;
+ parent = dget_parent(dentry);
+ btail = au_dbtaildir(parent);
+ for (bindex = btop; bindex <= btail; bindex++) {
+ struct dentry *h_parent, *h_dentry;
+ struct inode *h_inode, *h_dir;
+ struct au_branch *br;
+
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (h_dentry) {
+ if (d_is_positive(h_dentry))
+ npositive++;
+ break;
+ }
+ h_parent = au_h_dptr(parent, bindex);
+ if (!h_parent || !d_is_dir(h_parent))
+ continue;
+
+ if (dirren) {
+ /* if the inum matches, then use the prepared name */
+ err = au_dr_lkup_name(&args, bindex);
+ if (unlikely(err))
+ goto out_parent;
+ }
+
+ h_dir = d_inode(h_parent);
+ inode_lock_shared_nested(h_dir, AuLsc_I_PARENT);
+ h_dentry = au_do_lookup(h_parent, dentry, bindex, &args);
+ inode_unlock_shared(h_dir);
+ err = PTR_ERR(h_dentry);
+ if (IS_ERR(h_dentry))
+ goto out_parent;
+ if (h_dentry)
+ au_fclr_lkup(args.flags, ALLOW_NEG);
+ if (dirperm1)
+ au_fset_lkup(args.flags, IGNORE_PERM);
+
+ if (au_dbwh(dentry) == bindex)
+ break;
+ if (!h_dentry)
+ continue;
+ if (d_is_negative(h_dentry))
+ continue;
+ h_inode = d_inode(h_dentry);
+ npositive++;
+ if (!args.type)
+ args.type = h_inode->i_mode & S_IFMT;
+ if (args.type != S_IFDIR)
+ break;
+ else if (isdir) {
+ /* the type of lower may be different */
+ bdiropq = au_dbdiropq(dentry);
+ if (bdiropq >= 0 && bdiropq <= bindex)
+ break;
+ }
+ br = au_sbr(sb, bindex);
+ if (dirren
+ && au_dr_hino_test_add(&br->br_dirren, h_inode->i_ino,
+ /*add_ent*/NULL)) {
+ /* prepare next name to lookup */
+ err = au_dr_lkup(&args, dentry, bindex);
+ if (unlikely(err))
+ goto out_parent;
+ }
+ }
+
+ if (npositive) {
+ AuLabel(positive);
+ au_update_dbtop(dentry);
+ }
+ err = npositive;
+ if (unlikely(!au_opt_test(au_mntflags(sb), UDBA_NONE)
+ && au_dbtop(dentry) < 0)) {
+ err = -EIO;
+ AuIOErr("both of real entry and whiteout found, %pd, err %d\n",
+ dentry, err);
+ }
+
+out_parent:
+ dput(parent);
+ au_kfree_try_rcu(args.whname.name);
+ if (dirren)
+ au_dr_lkup_fin(&args);
+out:
+ return err;
+}
+
+struct dentry *au_sio_lkup_one(struct qstr *name, struct dentry *parent)
+{
+ struct dentry *dentry;
+ int wkq_err;
+
+ if (!au_test_h_perm_sio(d_inode(parent), MAY_EXEC))
+ dentry = vfsub_lkup_one(name, parent);
+ else {
+ struct vfsub_lkup_one_args args = {
+ .errp = &dentry,
+ .name = name,
+ .parent = parent
+ };
+
+ wkq_err = au_wkq_wait(vfsub_call_lkup_one, &args);
+ if (unlikely(wkq_err))
+ dentry = ERR_PTR(wkq_err);
+ }
+
+ return dentry;
+}
+
+/*
+ * lookup @dentry on @bindex which should be negative.
+ */
+int au_lkup_neg(struct dentry *dentry, aufs_bindex_t bindex, int wh)
+{
+ int err;
+ struct dentry *parent, *h_parent, *h_dentry;
+ struct au_branch *br;
+
+ parent = dget_parent(dentry);
+ h_parent = au_h_dptr(parent, bindex);
+ br = au_sbr(dentry->d_sb, bindex);
+ if (wh)
+ h_dentry = au_whtmp_lkup(h_parent, br, &dentry->d_name);
+ else
+ h_dentry = au_sio_lkup_one(&dentry->d_name, h_parent);
+ err = PTR_ERR(h_dentry);
+ if (IS_ERR(h_dentry))
+ goto out;
+ if (unlikely(d_is_positive(h_dentry))) {
+ err = -EIO;
+ AuIOErr("%pd should be negative on b%d.\n", h_dentry, bindex);
+ dput(h_dentry);
+ goto out;
+ }
+
+ err = 0;
+ if (bindex < au_dbtop(dentry))
+ au_set_dbtop(dentry, bindex);
+ if (au_dbbot(dentry) < bindex)
+ au_set_dbbot(dentry, bindex);
+ au_set_h_dptr(dentry, bindex, h_dentry);
+
+out:
+ dput(parent);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* subset of struct inode */
+struct au_iattr {
+ unsigned long i_ino;
+ /* unsigned int i_nlink; */
+ kuid_t i_uid;
+ kgid_t i_gid;
+ u64 i_version;
+/*
+ loff_t i_size;
+ blkcnt_t i_blocks;
+*/
+ umode_t i_mode;
+};
+
+static void au_iattr_save(struct au_iattr *ia, struct inode *h_inode)
+{
+ ia->i_ino = h_inode->i_ino;
+ /* ia->i_nlink = h_inode->i_nlink; */
+ ia->i_uid = h_inode->i_uid;
+ ia->i_gid = h_inode->i_gid;
+ ia->i_version = inode_query_iversion(h_inode);
+/*
+ ia->i_size = h_inode->i_size;
+ ia->i_blocks = h_inode->i_blocks;
+*/
+ ia->i_mode = (h_inode->i_mode & S_IFMT);
+}
+
+static int au_iattr_test(struct au_iattr *ia, struct inode *h_inode)
+{
+ return ia->i_ino != h_inode->i_ino
+ /* || ia->i_nlink != h_inode->i_nlink */
+ || !uid_eq(ia->i_uid, h_inode->i_uid)
+ || !gid_eq(ia->i_gid, h_inode->i_gid)
+ || !inode_eq_iversion(h_inode, ia->i_version)
+/*
+ || ia->i_size != h_inode->i_size
+ || ia->i_blocks != h_inode->i_blocks
+*/
+ || ia->i_mode != (h_inode->i_mode & S_IFMT);
+}
+
+static int au_h_verify_dentry(struct dentry *h_dentry, struct dentry *h_parent,
+ struct au_branch *br)
+{
+ int err;
+ struct au_iattr ia;
+ struct inode *h_inode;
+ struct dentry *h_d;
+ struct super_block *h_sb;
+
+ err = 0;
+ memset(&ia, -1, sizeof(ia));
+ h_sb = h_dentry->d_sb;
+ h_inode = NULL;
+ if (d_is_positive(h_dentry)) {
+ h_inode = d_inode(h_dentry);
+ au_iattr_save(&ia, h_inode);
+ } else if (au_test_nfs(h_sb) || au_test_fuse(h_sb))
+ /* nfs d_revalidate may return 0 for negative dentry */
+ /* fuse d_revalidate always return 0 for negative dentry */
+ goto out;
+
+ /* main purpose is namei.c:cached_lookup() and d_revalidate */
+ h_d = vfsub_lkup_one(&h_dentry->d_name, h_parent);
+ err = PTR_ERR(h_d);
+ if (IS_ERR(h_d))
+ goto out;
+
+ err = 0;
+ if (unlikely(h_d != h_dentry
+ || d_inode(h_d) != h_inode
+ || (h_inode && au_iattr_test(&ia, h_inode))))
+ err = au_busy_or_stale();
+ dput(h_d);
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+int au_h_verify(struct dentry *h_dentry, unsigned int udba, struct inode *h_dir,
+ struct dentry *h_parent, struct au_branch *br)
+{
+ int err;
+
+ err = 0;
+ if (udba == AuOpt_UDBA_REVAL
+ && !au_test_fs_remote(h_dentry->d_sb)) {
+ IMustLock(h_dir);
+ err = (d_inode(h_dentry->d_parent) != h_dir);
+ } else if (udba != AuOpt_UDBA_NONE)
+ err = au_h_verify_dentry(h_dentry, h_parent, br);
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_do_refresh_hdentry(struct dentry *dentry, struct dentry *parent)
+{
+ int err;
+ aufs_bindex_t new_bindex, bindex, bbot, bwh, bdiropq;
+ struct au_hdentry tmp, *p, *q;
+ struct au_dinfo *dinfo;
+ struct super_block *sb;
+
+ DiMustWriteLock(dentry);
+
+ sb = dentry->d_sb;
+ dinfo = au_di(dentry);
+ bbot = dinfo->di_bbot;
+ bwh = dinfo->di_bwh;
+ bdiropq = dinfo->di_bdiropq;
+ bindex = dinfo->di_btop;
+ p = au_hdentry(dinfo, bindex);
+ for (; bindex <= bbot; bindex++, p++) {
+ if (!p->hd_dentry)
+ continue;
+
+ new_bindex = au_br_index(sb, p->hd_id);
+ if (new_bindex == bindex)
+ continue;
+
+ if (dinfo->di_bwh == bindex)
+ bwh = new_bindex;
+ if (dinfo->di_bdiropq == bindex)
+ bdiropq = new_bindex;
+ if (new_bindex < 0) {
+ au_hdput(p);
+ p->hd_dentry = NULL;
+ continue;
+ }
+
+ /* swap two lower dentries, and loop again */
+ q = au_hdentry(dinfo, new_bindex);
+ tmp = *q;
+ *q = *p;
+ *p = tmp;
+ if (tmp.hd_dentry) {
+ bindex--;
+ p--;
+ }
+ }
+
+ dinfo->di_bwh = -1;
+ if (bwh >= 0 && bwh <= au_sbbot(sb) && au_sbr_whable(sb, bwh))
+ dinfo->di_bwh = bwh;
+
+ dinfo->di_bdiropq = -1;
+ if (bdiropq >= 0
+ && bdiropq <= au_sbbot(sb)
+ && au_sbr_whable(sb, bdiropq))
+ dinfo->di_bdiropq = bdiropq;
+
+ err = -EIO;
+ dinfo->di_btop = -1;
+ dinfo->di_bbot = -1;
+ bbot = au_dbbot(parent);
+ bindex = 0;
+ p = au_hdentry(dinfo, bindex);
+ for (; bindex <= bbot; bindex++, p++)
+ if (p->hd_dentry) {
+ dinfo->di_btop = bindex;
+ break;
+ }
+
+ if (dinfo->di_btop >= 0) {
+ bindex = bbot;
+ p = au_hdentry(dinfo, bindex);
+ for (; bindex >= 0; bindex--, p--)
+ if (p->hd_dentry) {
+ dinfo->di_bbot = bindex;
+ err = 0;
+ break;
+ }
+ }
+
+ return err;
+}
+
+static void au_do_hide(struct dentry *dentry)
+{
+ struct inode *inode;
+
+ if (d_really_is_positive(dentry)) {
+ inode = d_inode(dentry);
+ if (!d_is_dir(dentry)) {
+ if (inode->i_nlink && !d_unhashed(dentry))
+ drop_nlink(inode);
+ } else {
+ clear_nlink(inode);
+ /* stop next lookup */
+ inode->i_flags |= S_DEAD;
+ }
+ smp_mb(); /* necessary? */
+ }
+ d_drop(dentry);
+}
+
+static int au_hide_children(struct dentry *parent)
+{
+ int err, i, j, ndentry;
+ struct au_dcsub_pages dpages;
+ struct au_dpage *dpage;
+ struct dentry *dentry;
+
+ err = au_dpages_init(&dpages, GFP_NOFS);
+ if (unlikely(err))
+ goto out;
+ err = au_dcsub_pages(&dpages, parent, NULL, NULL);
+ if (unlikely(err))
+ goto out_dpages;
+
+ /* in reverse order */
+ for (i = dpages.ndpage - 1; i >= 0; i--) {
+ dpage = dpages.dpages + i;
+ ndentry = dpage->ndentry;
+ for (j = ndentry - 1; j >= 0; j--) {
+ dentry = dpage->dentries[j];
+ if (dentry != parent)
+ au_do_hide(dentry);
+ }
+ }
+
+out_dpages:
+ au_dpages_free(&dpages);
+out:
+ return err;
+}
+
+static void au_hide(struct dentry *dentry)
+{
+ int err;
+
+ AuDbgDentry(dentry);
+ if (d_is_dir(dentry)) {
+ /* shrink_dcache_parent(dentry); */
+ err = au_hide_children(dentry);
+ if (unlikely(err))
+ AuIOErr("%pd, failed hiding children, ignored %d\n",
+ dentry, err);
+ }
+ au_do_hide(dentry);
+}
+
+/*
+ * By adding a dirty branch, a cached dentry may be affected in various ways.
+ *
+ * a dirty branch is added
+ * - on the top of layers
+ * - in the middle of layers
+ * - to the bottom of layers
+ *
+ * on the added branch there exists
+ * - a whiteout
+ * - a diropq
+ * - a same named entry
+ * + exist
+ * * negative --> positive
+ * * positive --> positive
+ * - type is unchanged
+ * - type is changed
+ * + doesn't exist
+ * * negative --> negative
+ * * positive --> negative (rejected by au_br_del() for non-dir case)
+ * - none
+ */
+static int au_refresh_by_dinfo(struct dentry *dentry, struct au_dinfo *dinfo,
+ struct au_dinfo *tmp)
+{
+ int err;
+ aufs_bindex_t bindex, bbot;
+ struct {
+ struct dentry *dentry;
+ struct inode *inode;
+ mode_t mode;
+ } orig_h, tmp_h = {
+ .dentry = NULL
+ };
+ struct au_hdentry *hd;
+ struct inode *inode, *h_inode;
+ struct dentry *h_dentry;
+
+ err = 0;
+ AuDebugOn(dinfo->di_btop < 0);
+ orig_h.mode = 0;
+ orig_h.dentry = au_hdentry(dinfo, dinfo->di_btop)->hd_dentry;
+ orig_h.inode = NULL;
+ if (d_is_positive(orig_h.dentry)) {
+ orig_h.inode = d_inode(orig_h.dentry);
+ orig_h.mode = orig_h.inode->i_mode & S_IFMT;
+ }
+ if (tmp->di_btop >= 0) {
+ tmp_h.dentry = au_hdentry(tmp, tmp->di_btop)->hd_dentry;
+ if (d_is_positive(tmp_h.dentry)) {
+ tmp_h.inode = d_inode(tmp_h.dentry);
+ tmp_h.mode = tmp_h.inode->i_mode & S_IFMT;
+ }
+ }
+
+ inode = NULL;
+ if (d_really_is_positive(dentry))
+ inode = d_inode(dentry);
+ if (!orig_h.inode) {
+ AuDbg("negative originally\n");
+ if (inode) {
+ au_hide(dentry);
+ goto out;
+ }
+ AuDebugOn(inode);
+ AuDebugOn(dinfo->di_btop != dinfo->di_bbot);
+ AuDebugOn(dinfo->di_bdiropq != -1);
+
+ if (!tmp_h.inode) {
+ AuDbg("negative --> negative\n");
+ /* should have only one negative lower */
+ if (tmp->di_btop >= 0
+ && tmp->di_btop < dinfo->di_btop) {
+ AuDebugOn(tmp->di_btop != tmp->di_bbot);
+ AuDebugOn(dinfo->di_btop != dinfo->di_bbot);
+ au_set_h_dptr(dentry, dinfo->di_btop, NULL);
+ au_di_cp(dinfo, tmp);
+ hd = au_hdentry(tmp, tmp->di_btop);
+ au_set_h_dptr(dentry, tmp->di_btop,
+ dget(hd->hd_dentry));
+ }
+ au_dbg_verify_dinode(dentry);
+ } else {
+ AuDbg("negative --> positive\n");
+ /*
+ * similar to the behaviour of creating with bypassing
+ * aufs.
+ * unhash it in order to force an error in the
+ * succeeding create operation.
+ * we should not set S_DEAD here.
+ */
+ d_drop(dentry);
+ /* au_di_swap(tmp, dinfo); */
+ au_dbg_verify_dinode(dentry);
+ }
+ } else {
+ AuDbg("positive originally\n");
+ /* inode may be NULL */
+ AuDebugOn(inode && (inode->i_mode & S_IFMT) != orig_h.mode);
+ if (!tmp_h.inode) {
+ AuDbg("positive --> negative\n");
+ /* or bypassing aufs */
+ au_hide(dentry);
+ if (tmp->di_bwh >= 0 && tmp->di_bwh <= dinfo->di_btop)
+ dinfo->di_bwh = tmp->di_bwh;
+ if (inode)
+ err = au_refresh_hinode_self(inode);
+ au_dbg_verify_dinode(dentry);
+ } else if (orig_h.mode == tmp_h.mode) {
+ AuDbg("positive --> positive, same type\n");
+ if (!S_ISDIR(orig_h.mode)
+ && dinfo->di_btop > tmp->di_btop) {
+ /*
+ * similar to the behaviour of removing and
+ * creating.
+ */
+ au_hide(dentry);
+ if (inode)
+ err = au_refresh_hinode_self(inode);
+ au_dbg_verify_dinode(dentry);
+ } else {
+ /* fill empty slots */
+ if (dinfo->di_btop > tmp->di_btop)
+ dinfo->di_btop = tmp->di_btop;
+ if (dinfo->di_bbot < tmp->di_bbot)
+ dinfo->di_bbot = tmp->di_bbot;
+ dinfo->di_bwh = tmp->di_bwh;
+ dinfo->di_bdiropq = tmp->di_bdiropq;
+ bbot = dinfo->di_bbot;
+ bindex = tmp->di_btop;
+ hd = au_hdentry(tmp, bindex);
+ for (; bindex <= bbot; bindex++, hd++) {
+ if (au_h_dptr(dentry, bindex))
+ continue;
+ h_dentry = hd->hd_dentry;
+ if (!h_dentry)
+ continue;
+ AuDebugOn(d_is_negative(h_dentry));
+ h_inode = d_inode(h_dentry);
+ AuDebugOn(orig_h.mode
+ != (h_inode->i_mode
+ & S_IFMT));
+ au_set_h_dptr(dentry, bindex,
+ dget(h_dentry));
+ }
+ if (inode)
+ err = au_refresh_hinode(inode, dentry);
+ au_dbg_verify_dinode(dentry);
+ }
+ } else {
+ AuDbg("positive --> positive, different type\n");
+ /* similar to the behaviour of removing and creating */
+ au_hide(dentry);
+ if (inode)
+ err = au_refresh_hinode_self(inode);
+ au_dbg_verify_dinode(dentry);
+ }
+ }
+
+out:
+ return err;
+}
+
+void au_refresh_dop(struct dentry *dentry, int force_reval)
+{
+ const struct dentry_operations *dop
+ = force_reval ? &aufs_dop : dentry->d_sb->s_d_op;
+ static const unsigned int mask
+ = DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE;
+
+ BUILD_BUG_ON(sizeof(mask) != sizeof(dentry->d_flags));
+
+ if (dentry->d_op == dop)
+ return;
+
+ AuDbg("%pd\n", dentry);
+ spin_lock(&dentry->d_lock);
+ if (dop == &aufs_dop)
+ dentry->d_flags |= mask;
+ else
+ dentry->d_flags &= ~mask;
+ dentry->d_op = dop;
+ spin_unlock(&dentry->d_lock);
+}
+
+int au_refresh_dentry(struct dentry *dentry, struct dentry *parent)
+{
+ int err, ebrange, nbr;
+ unsigned int sigen;
+ struct au_dinfo *dinfo, *tmp;
+ struct super_block *sb;
+ struct inode *inode;
+
+ DiMustWriteLock(dentry);
+ AuDebugOn(IS_ROOT(dentry));
+ AuDebugOn(d_really_is_negative(parent));
+
+ sb = dentry->d_sb;
+ sigen = au_sigen(sb);
+ err = au_digen_test(parent, sigen);
+ if (unlikely(err))
+ goto out;
+
+ nbr = au_sbbot(sb) + 1;
+ dinfo = au_di(dentry);
+ err = au_di_realloc(dinfo, nbr, /*may_shrink*/0);
+ if (unlikely(err))
+ goto out;
+ ebrange = au_dbrange_test(dentry);
+ if (!ebrange)
+ ebrange = au_do_refresh_hdentry(dentry, parent);
+
+ if (d_unhashed(dentry) || ebrange /* || dinfo->di_tmpfile */) {
+ AuDebugOn(au_dbtop(dentry) < 0 && au_dbbot(dentry) >= 0);
+ if (d_really_is_positive(dentry)) {
+ inode = d_inode(dentry);
+ err = au_refresh_hinode_self(inode);
+ }
+ au_dbg_verify_dinode(dentry);
+ if (!err)
+ goto out_dgen; /* success */
+ goto out;
+ }
+
+ /* temporary dinfo */
+ AuDbgDentry(dentry);
+ err = -ENOMEM;
+ tmp = au_di_alloc(sb, AuLsc_DI_TMP);
+ if (unlikely(!tmp))
+ goto out;
+ au_di_swap(tmp, dinfo);
+ /* returns the number of positive dentries */
+ /*
+ * if current working dir is removed, it returns an error.
+ * but the dentry is legal.
+ */
+ err = au_lkup_dentry(dentry, /*btop*/0, AuLkup_ALLOW_NEG);
+ AuDbgDentry(dentry);
+ au_di_swap(tmp, dinfo);
+ if (err == -ENOENT)
+ err = 0;
+ if (err >= 0) {
+ /* compare/refresh by dinfo */
+ AuDbgDentry(dentry);
+ err = au_refresh_by_dinfo(dentry, dinfo, tmp);
+ au_dbg_verify_dinode(dentry);
+ AuTraceErr(err);
+ }
+ au_di_realloc(dinfo, nbr, /*may_shrink*/1); /* harmless if err */
+ au_rw_write_unlock(&tmp->di_rwsem);
+ au_di_free(tmp);
+ if (unlikely(err))
+ goto out;
+
+out_dgen:
+ au_update_digen(dentry);
+out:
+ if (unlikely(err && !(dentry->d_flags & DCACHE_NFSFS_RENAMED))) {
+ AuIOErr("failed refreshing %pd, %d\n", dentry, err);
+ AuDbgDentry(dentry);
+ }
+ AuTraceErr(err);
+ return err;
+}
+
+static int au_do_h_d_reval(struct dentry *h_dentry, unsigned int flags,
+ struct dentry *dentry, aufs_bindex_t bindex)
+{
+ int err, valid;
+
+ err = 0;
+ if (!(h_dentry->d_flags & DCACHE_OP_REVALIDATE))
+ goto out;
+
+ AuDbg("b%d\n", bindex);
+ /*
+ * gave up supporting LOOKUP_CREATE/OPEN for lower fs,
+ * due to whiteout and branch permission.
+ */
+ flags &= ~(/*LOOKUP_PARENT |*/ LOOKUP_OPEN | LOOKUP_CREATE
+ | LOOKUP_FOLLOW | LOOKUP_EXCL);
+ /* it may return tri-state */
+ valid = h_dentry->d_op->d_revalidate(h_dentry, flags);
+
+ if (unlikely(valid < 0))
+ err = valid;
+ else if (!valid)
+ err = -EINVAL;
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/* todo: remove this */
+static int h_d_revalidate(struct dentry *dentry, struct inode *inode,
+ unsigned int flags, int do_udba, int dirren)
+{
+ int err;
+ umode_t mode, h_mode;
+ aufs_bindex_t bindex, btail, btop, ibs, ibe;
+ unsigned char plus, unhashed, is_root, h_plus, h_nfs, tmpfile;
+ struct inode *h_inode, *h_cached_inode;
+ struct dentry *h_dentry;
+ struct qstr *name, *h_name;
+
+ err = 0;
+ plus = 0;
+ mode = 0;
+ ibs = -1;
+ ibe = -1;
+ unhashed = !!d_unhashed(dentry);
+ is_root = !!IS_ROOT(dentry);
+ name = &dentry->d_name;
+ tmpfile = au_di(dentry)->di_tmpfile;
+
+ /*
+ * Theoretically, REVAL test should be unnecessary in case of
+ * {FS,I}NOTIFY.
+ * But {fs,i}notify doesn't fire some necessary events,
+ * IN_ATTRIB for atime/nlink/pageio
+ * Let's do REVAL test too.
+ */
+ if (do_udba && inode) {
+ mode = (inode->i_mode & S_IFMT);
+ plus = (inode->i_nlink > 0);
+ ibs = au_ibtop(inode);
+ ibe = au_ibbot(inode);
+ }
+
+ btop = au_dbtop(dentry);
+ btail = btop;
+ if (inode && S_ISDIR(inode->i_mode))
+ btail = au_dbtaildir(dentry);
+ for (bindex = btop; bindex <= btail; bindex++) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (!h_dentry)
+ continue;
+
+ AuDbg("b%d, %pd\n", bindex, h_dentry);
+ h_nfs = !!au_test_nfs(h_dentry->d_sb);
+ spin_lock(&h_dentry->d_lock);
+ h_name = &h_dentry->d_name;
+ if (unlikely(do_udba
+ && !is_root
+ && ((!h_nfs
+ && (unhashed != !!d_unhashed(h_dentry)
+ || (!tmpfile && !dirren
+ && !au_qstreq(name, h_name))
+ ))
+ || (h_nfs
+ && !(flags & LOOKUP_OPEN)
+ && (h_dentry->d_flags
+ & DCACHE_NFSFS_RENAMED)))
+ )) {
+ int h_unhashed;
+
+ h_unhashed = d_unhashed(h_dentry);
+ spin_unlock(&h_dentry->d_lock);
+ AuDbg("unhash 0x%x 0x%x, %pd %pd\n",
+ unhashed, h_unhashed, dentry, h_dentry);
+ goto err;
+ }
+ spin_unlock(&h_dentry->d_lock);
+
+ err = au_do_h_d_reval(h_dentry, flags, dentry, bindex);
+ if (unlikely(err))
+ /* do not goto err, to keep the errno */
+ break;
+
+ /* todo: plink too? */
+ if (!do_udba)
+ continue;
+
+ /* UDBA tests */
+ if (unlikely(!!inode != d_is_positive(h_dentry)))
+ goto err;
+
+ h_inode = NULL;
+ if (d_is_positive(h_dentry))
+ h_inode = d_inode(h_dentry);
+ h_plus = plus;
+ h_mode = mode;
+ h_cached_inode = h_inode;
+ if (h_inode) {
+ h_mode = (h_inode->i_mode & S_IFMT);
+ h_plus = (h_inode->i_nlink > 0);
+ }
+ if (inode && ibs <= bindex && bindex <= ibe)
+ h_cached_inode = au_h_iptr(inode, bindex);
+
+ if (!h_nfs) {
+ if (unlikely(plus != h_plus && !tmpfile))
+ goto err;
+ } else {
+ if (unlikely(!(h_dentry->d_flags & DCACHE_NFSFS_RENAMED)
+ && !is_root
+ && !IS_ROOT(h_dentry)
+ && unhashed != d_unhashed(h_dentry)))
+ goto err;
+ }
+ if (unlikely(mode != h_mode
+ || h_cached_inode != h_inode))
+ goto err;
+ continue;
+
+err:
+ err = -EINVAL;
+ break;
+ }
+
+ AuTraceErr(err);
+ return err;
+}
+
+/* todo: consolidate with do_refresh() and au_reval_for_attr() */
+static int simple_reval_dpath(struct dentry *dentry, unsigned int sigen)
+{
+ int err;
+ struct dentry *parent;
+
+ if (!au_digen_test(dentry, sigen))
+ return 0;
+
+ parent = dget_parent(dentry);
+ di_read_lock_parent(parent, AuLock_IR);
+ AuDebugOn(au_digen_test(parent, sigen));
+ au_dbg_verify_gen(parent, sigen);
+ err = au_refresh_dentry(dentry, parent);
+ di_read_unlock(parent, AuLock_IR);
+ dput(parent);
+ AuTraceErr(err);
+ return err;
+}
+
+int au_reval_dpath(struct dentry *dentry, unsigned int sigen)
+{
+ int err;
+ struct dentry *d, *parent;
+
+ if (!au_ftest_si(au_sbi(dentry->d_sb), FAILED_REFRESH_DIR))
+ return simple_reval_dpath(dentry, sigen);
+
+ /* slow loop, keep it simple and stupid */
+ /* cf: au_cpup_dirs() */
+ err = 0;
+ parent = NULL;
+ while (au_digen_test(dentry, sigen)) {
+ d = dentry;
+ while (1) {
+ dput(parent);
+ parent = dget_parent(d);
+ if (!au_digen_test(parent, sigen))
+ break;
+ d = parent;
+ }
+
+ if (d != dentry)
+ di_write_lock_child2(d);
+
+ /* someone might update our dentry while we were sleeping */
+ if (au_digen_test(d, sigen)) {
+ /*
+ * todo: consolidate with simple_reval_dpath(),
+ * do_refresh() and au_reval_for_attr().
+ */
+ di_read_lock_parent(parent, AuLock_IR);
+ err = au_refresh_dentry(d, parent);
+ di_read_unlock(parent, AuLock_IR);
+ }
+
+ if (d != dentry)
+ di_write_unlock(d);
+ dput(parent);
+ if (unlikely(err))
+ break;
+ }
+
+ return err;
+}
+
+/*
+ * if valid returns 1, otherwise 0.
+ */
+static int aufs_d_revalidate(struct dentry *dentry, unsigned int flags)
+{
+ int valid, err;
+ unsigned int sigen;
+ unsigned char do_udba, dirren;
+ struct super_block *sb;
+ struct inode *inode;
+
+ /* todo: support rcu-walk? */
+ if (flags & LOOKUP_RCU)
+ return -ECHILD;
+
+ valid = 0;
+ if (unlikely(!au_di(dentry)))
+ goto out;
+
+ valid = 1;
+ sb = dentry->d_sb;
+ /*
+ * todo: very ugly
+ * i_mutex of parent dir may be held,
+ * but we should not return 'invalid' due to busy.
+ */
+ err = aufs_read_lock(dentry, AuLock_FLUSH | AuLock_DW | AuLock_NOPLM);
+ if (unlikely(err)) {
+ valid = err;
+ AuTraceErr(err);
+ goto out;
+ }
+ inode = NULL;
+ if (d_really_is_positive(dentry))
+ inode = d_inode(dentry);
+ if (unlikely(inode && au_is_bad_inode(inode))) {
+ err = -EINVAL;
+ AuTraceErr(err);
+ goto out_dgrade;
+ }
+ if (unlikely(au_dbrange_test(dentry))) {
+ err = -EINVAL;
+ AuTraceErr(err);
+ goto out_dgrade;
+ }
+
+ sigen = au_sigen(sb);
+ if (au_digen_test(dentry, sigen)) {
+ AuDebugOn(IS_ROOT(dentry));
+ err = au_reval_dpath(dentry, sigen);
+ if (unlikely(err)) {
+ AuTraceErr(err);
+ goto out_dgrade;
+ }
+ }
+ di_downgrade_lock(dentry, AuLock_IR);
+
+ err = -EINVAL;
+ if (!(flags & (LOOKUP_OPEN | LOOKUP_EMPTY))
+ && inode
+ && !(inode->i_state && I_LINKABLE)
+ && (IS_DEADDIR(inode) || !inode->i_nlink)) {
+ AuTraceErr(err);
+ goto out_inval;
+ }
+
+ do_udba = !au_opt_test(au_mntflags(sb), UDBA_NONE);
+ if (do_udba && inode) {
+ aufs_bindex_t btop = au_ibtop(inode);
+ struct inode *h_inode;
+
+ if (btop >= 0) {
+ h_inode = au_h_iptr(inode, btop);
+ if (h_inode && au_test_higen(inode, h_inode)) {
+ AuTraceErr(err);
+ goto out_inval;
+ }
+ }
+ }
+
+ dirren = !!au_opt_test(au_mntflags(sb), DIRREN);
+ err = h_d_revalidate(dentry, inode, flags, do_udba, dirren);
+ if (unlikely(!err && do_udba && au_dbtop(dentry) < 0)) {
+ err = -EIO;
+ AuDbg("both of real entry and whiteout found, %p, err %d\n",
+ dentry, err);
+ }
+ goto out_inval;
+
+out_dgrade:
+ di_downgrade_lock(dentry, AuLock_IR);
+out_inval:
+ aufs_read_unlock(dentry, AuLock_IR);
+ AuTraceErr(err);
+ valid = !err;
+out:
+ if (!valid) {
+ AuDbg("%pd invalid, %d\n", dentry, valid);
+ d_drop(dentry);
+ }
+ return valid;
+}
+
+static void aufs_d_release(struct dentry *dentry)
+{
+ if (au_di(dentry)) {
+ au_di_fin(dentry);
+ au_hn_di_reinit(dentry);
+ }
+}
+
+const struct dentry_operations aufs_dop = {
+ .d_revalidate = aufs_d_revalidate,
+ .d_weak_revalidate = aufs_d_revalidate,
+ .d_release = aufs_d_release
+};
+
+/* aufs_dop without d_revalidate */
+const struct dentry_operations aufs_dop_noreval = {
+ .d_release = aufs_d_release
+};
diff --git a/fs/aufs/dentry.h b/fs/aufs/dentry.h
new file mode 100644
index 0000000000..3b443fc7ee
--- /dev/null
+++ b/fs/aufs/dentry.h
@@ -0,0 +1,268 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * lookup and dentry operations
+ */
+
+#ifndef __AUFS_DENTRY_H__
+#define __AUFS_DENTRY_H__
+
+#ifdef __KERNEL__
+
+#include <linux/dcache.h>
+#include "dirren.h"
+#include "rwsem.h"
+
+struct au_hdentry {
+ struct dentry *hd_dentry;
+ aufs_bindex_t hd_id;
+};
+
+struct au_dinfo {
+ atomic_t di_generation;
+
+ struct au_rwsem di_rwsem;
+ aufs_bindex_t di_btop, di_bbot, di_bwh, di_bdiropq;
+ unsigned char di_tmpfile; /* to allow the different name */
+ struct au_hdentry *di_hdentry;
+ struct rcu_head rcu;
+} ____cacheline_aligned_in_smp;
+
+/* ---------------------------------------------------------------------- */
+
+/* flags for au_lkup_dentry() */
+#define AuLkup_ALLOW_NEG 1
+#define AuLkup_IGNORE_PERM (1 << 1)
+#define AuLkup_DIRREN (1 << 2)
+#define au_ftest_lkup(flags, name) ((flags) & AuLkup_##name)
+#define au_fset_lkup(flags, name) \
+ do { (flags) |= AuLkup_##name; } while (0)
+#define au_fclr_lkup(flags, name) \
+ do { (flags) &= ~AuLkup_##name; } while (0)
+
+#ifndef CONFIG_AUFS_DIRREN
+#undef AuLkup_DIRREN
+#define AuLkup_DIRREN 0
+#endif
+
+struct au_do_lookup_args {
+ unsigned int flags;
+ mode_t type;
+ struct qstr whname, *name;
+ struct au_dr_lookup dirren;
+};
+
+/* ---------------------------------------------------------------------- */
+
+/* dentry.c */
+extern const struct dentry_operations aufs_dop, aufs_dop_noreval;
+struct au_branch;
+struct dentry *au_sio_lkup_one(struct qstr *name, struct dentry *parent);
+int au_h_verify(struct dentry *h_dentry, unsigned int udba, struct inode *h_dir,
+ struct dentry *h_parent, struct au_branch *br);
+
+int au_lkup_dentry(struct dentry *dentry, aufs_bindex_t btop,
+ unsigned int flags);
+int au_lkup_neg(struct dentry *dentry, aufs_bindex_t bindex, int wh);
+int au_refresh_dentry(struct dentry *dentry, struct dentry *parent);
+int au_reval_dpath(struct dentry *dentry, unsigned int sigen);
+void au_refresh_dop(struct dentry *dentry, int force_reval);
+
+/* dinfo.c */
+void au_di_init_once(void *_di);
+struct au_dinfo *au_di_alloc(struct super_block *sb, unsigned int lsc);
+void au_di_free(struct au_dinfo *dinfo);
+void au_di_swap(struct au_dinfo *a, struct au_dinfo *b);
+void au_di_cp(struct au_dinfo *dst, struct au_dinfo *src);
+int au_di_init(struct dentry *dentry);
+void au_di_fin(struct dentry *dentry);
+int au_di_realloc(struct au_dinfo *dinfo, int nbr, int may_shrink);
+
+void di_read_lock(struct dentry *d, int flags, unsigned int lsc);
+void di_read_unlock(struct dentry *d, int flags);
+void di_downgrade_lock(struct dentry *d, int flags);
+void di_write_lock(struct dentry *d, unsigned int lsc);
+void di_write_unlock(struct dentry *d);
+void di_write_lock2_child(struct dentry *d1, struct dentry *d2, int isdir);
+void di_write_lock2_parent(struct dentry *d1, struct dentry *d2, int isdir);
+void di_write_unlock2(struct dentry *d1, struct dentry *d2);
+
+struct dentry *au_h_dptr(struct dentry *dentry, aufs_bindex_t bindex);
+struct dentry *au_h_d_alias(struct dentry *dentry, aufs_bindex_t bindex);
+aufs_bindex_t au_dbtail(struct dentry *dentry);
+aufs_bindex_t au_dbtaildir(struct dentry *dentry);
+
+void au_set_h_dptr(struct dentry *dentry, aufs_bindex_t bindex,
+ struct dentry *h_dentry);
+int au_digen_test(struct dentry *dentry, unsigned int sigen);
+int au_dbrange_test(struct dentry *dentry);
+void au_update_digen(struct dentry *dentry);
+void au_update_dbrange(struct dentry *dentry, int do_put_zero);
+void au_update_dbtop(struct dentry *dentry);
+void au_update_dbbot(struct dentry *dentry);
+int au_find_dbindex(struct dentry *dentry, struct dentry *h_dentry);
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct au_dinfo *au_di(struct dentry *dentry)
+{
+ return dentry->d_fsdata;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* lock subclass for dinfo */
+enum {
+ AuLsc_DI_CHILD, /* child first */
+ AuLsc_DI_CHILD2, /* rename(2), link(2), and cpup at hnotify */
+ AuLsc_DI_CHILD3, /* copyup dirs */
+ AuLsc_DI_PARENT,
+ AuLsc_DI_PARENT2,
+ AuLsc_DI_PARENT3,
+ AuLsc_DI_TMP /* temp for replacing dinfo */
+};
+
+/*
+ * di_read_lock_child, di_write_lock_child,
+ * di_read_lock_child2, di_write_lock_child2,
+ * di_read_lock_child3, di_write_lock_child3,
+ * di_read_lock_parent, di_write_lock_parent,
+ * di_read_lock_parent2, di_write_lock_parent2,
+ * di_read_lock_parent3, di_write_lock_parent3,
+ */
+#define AuReadLockFunc(name, lsc) \
+static inline void di_read_lock_##name(struct dentry *d, int flags) \
+{ di_read_lock(d, flags, AuLsc_DI_##lsc); }
+
+#define AuWriteLockFunc(name, lsc) \
+static inline void di_write_lock_##name(struct dentry *d) \
+{ di_write_lock(d, AuLsc_DI_##lsc); }
+
+#define AuRWLockFuncs(name, lsc) \
+ AuReadLockFunc(name, lsc) \
+ AuWriteLockFunc(name, lsc)
+
+AuRWLockFuncs(child, CHILD);
+AuRWLockFuncs(child2, CHILD2);
+AuRWLockFuncs(child3, CHILD3);
+AuRWLockFuncs(parent, PARENT);
+AuRWLockFuncs(parent2, PARENT2);
+AuRWLockFuncs(parent3, PARENT3);
+
+#undef AuReadLockFunc
+#undef AuWriteLockFunc
+#undef AuRWLockFuncs
+
+#define DiMustNoWaiters(d) AuRwMustNoWaiters(&au_di(d)->di_rwsem)
+#define DiMustAnyLock(d) AuRwMustAnyLock(&au_di(d)->di_rwsem)
+#define DiMustWriteLock(d) AuRwMustWriteLock(&au_di(d)->di_rwsem)
+
+/* ---------------------------------------------------------------------- */
+
+/* todo: memory barrier? */
+static inline unsigned int au_digen(struct dentry *d)
+{
+ return atomic_read(&au_di(d)->di_generation);
+}
+
+static inline void au_h_dentry_init(struct au_hdentry *hdentry)
+{
+ hdentry->hd_dentry = NULL;
+}
+
+static inline struct au_hdentry *au_hdentry(struct au_dinfo *di,
+ aufs_bindex_t bindex)
+{
+ return di->di_hdentry + bindex;
+}
+
+static inline void au_hdput(struct au_hdentry *hd)
+{
+ if (hd)
+ dput(hd->hd_dentry);
+}
+
+static inline aufs_bindex_t au_dbtop(struct dentry *dentry)
+{
+ DiMustAnyLock(dentry);
+ return au_di(dentry)->di_btop;
+}
+
+static inline aufs_bindex_t au_dbbot(struct dentry *dentry)
+{
+ DiMustAnyLock(dentry);
+ return au_di(dentry)->di_bbot;
+}
+
+static inline aufs_bindex_t au_dbwh(struct dentry *dentry)
+{
+ DiMustAnyLock(dentry);
+ return au_di(dentry)->di_bwh;
+}
+
+static inline aufs_bindex_t au_dbdiropq(struct dentry *dentry)
+{
+ DiMustAnyLock(dentry);
+ return au_di(dentry)->di_bdiropq;
+}
+
+/* todo: hard/soft set? */
+static inline void au_set_dbtop(struct dentry *dentry, aufs_bindex_t bindex)
+{
+ DiMustWriteLock(dentry);
+ au_di(dentry)->di_btop = bindex;
+}
+
+static inline void au_set_dbbot(struct dentry *dentry, aufs_bindex_t bindex)
+{
+ DiMustWriteLock(dentry);
+ au_di(dentry)->di_bbot = bindex;
+}
+
+static inline void au_set_dbwh(struct dentry *dentry, aufs_bindex_t bindex)
+{
+ DiMustWriteLock(dentry);
+ /* dbwh can be outside of btop - bbot range */
+ au_di(dentry)->di_bwh = bindex;
+}
+
+static inline void au_set_dbdiropq(struct dentry *dentry, aufs_bindex_t bindex)
+{
+ DiMustWriteLock(dentry);
+ au_di(dentry)->di_bdiropq = bindex;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_HNOTIFY
+static inline void au_digen_dec(struct dentry *d)
+{
+ atomic_dec(&au_di(d)->di_generation);
+}
+
+static inline void au_hn_di_reinit(struct dentry *dentry)
+{
+ dentry->d_fsdata = NULL;
+}
+#else
+AuStubVoid(au_hn_di_reinit, struct dentry *dentry __maybe_unused)
+#endif /* CONFIG_AUFS_HNOTIFY */
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_DENTRY_H__ */
diff --git a/fs/aufs/dinfo.c b/fs/aufs/dinfo.c
new file mode 100644
index 0000000000..86140548f0
--- /dev/null
+++ b/fs/aufs/dinfo.c
@@ -0,0 +1,554 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * dentry private data
+ */
+
+#include "aufs.h"
+
+void au_di_init_once(void *_dinfo)
+{
+ struct au_dinfo *dinfo = _dinfo;
+
+ au_rw_init(&dinfo->di_rwsem);
+}
+
+struct au_dinfo *au_di_alloc(struct super_block *sb, unsigned int lsc)
+{
+ struct au_dinfo *dinfo;
+ int nbr, i;
+
+ dinfo = au_cache_alloc_dinfo();
+ if (unlikely(!dinfo))
+ goto out;
+
+ nbr = au_sbbot(sb) + 1;
+ if (nbr <= 0)
+ nbr = 1;
+ dinfo->di_hdentry = kcalloc(nbr, sizeof(*dinfo->di_hdentry), GFP_NOFS);
+ if (dinfo->di_hdentry) {
+ au_rw_write_lock_nested(&dinfo->di_rwsem, lsc);
+ dinfo->di_btop = -1;
+ dinfo->di_bbot = -1;
+ dinfo->di_bwh = -1;
+ dinfo->di_bdiropq = -1;
+ dinfo->di_tmpfile = 0;
+ for (i = 0; i < nbr; i++)
+ dinfo->di_hdentry[i].hd_id = -1;
+ goto out;
+ }
+
+ au_cache_free_dinfo(dinfo);
+ dinfo = NULL;
+
+out:
+ return dinfo;
+}
+
+void au_di_free(struct au_dinfo *dinfo)
+{
+ struct au_hdentry *p;
+ aufs_bindex_t bbot, bindex;
+
+ /* dentry may not be revalidated */
+ bindex = dinfo->di_btop;
+ if (bindex >= 0) {
+ bbot = dinfo->di_bbot;
+ p = au_hdentry(dinfo, bindex);
+ while (bindex++ <= bbot)
+ au_hdput(p++);
+ }
+ au_kfree_try_rcu(dinfo->di_hdentry);
+ au_cache_free_dinfo(dinfo);
+}
+
+void au_di_swap(struct au_dinfo *a, struct au_dinfo *b)
+{
+ struct au_hdentry *p;
+ aufs_bindex_t bi;
+
+ AuRwMustWriteLock(&a->di_rwsem);
+ AuRwMustWriteLock(&b->di_rwsem);
+
+#define DiSwap(v, name) \
+ do { \
+ v = a->di_##name; \
+ a->di_##name = b->di_##name; \
+ b->di_##name = v; \
+ } while (0)
+
+ DiSwap(p, hdentry);
+ DiSwap(bi, btop);
+ DiSwap(bi, bbot);
+ DiSwap(bi, bwh);
+ DiSwap(bi, bdiropq);
+ /* smp_mb(); */
+
+#undef DiSwap
+}
+
+void au_di_cp(struct au_dinfo *dst, struct au_dinfo *src)
+{
+ AuRwMustWriteLock(&dst->di_rwsem);
+ AuRwMustWriteLock(&src->di_rwsem);
+
+ dst->di_btop = src->di_btop;
+ dst->di_bbot = src->di_bbot;
+ dst->di_bwh = src->di_bwh;
+ dst->di_bdiropq = src->di_bdiropq;
+ /* smp_mb(); */
+}
+
+int au_di_init(struct dentry *dentry)
+{
+ int err;
+ struct super_block *sb;
+ struct au_dinfo *dinfo;
+
+ err = 0;
+ sb = dentry->d_sb;
+ dinfo = au_di_alloc(sb, AuLsc_DI_CHILD);
+ if (dinfo) {
+ atomic_set(&dinfo->di_generation, au_sigen(sb));
+ /* smp_mb(); */ /* atomic_set */
+ dentry->d_fsdata = dinfo;
+ } else
+ err = -ENOMEM;
+
+ return err;
+}
+
+void au_di_fin(struct dentry *dentry)
+{
+ struct au_dinfo *dinfo;
+
+ dinfo = au_di(dentry);
+ AuRwDestroy(&dinfo->di_rwsem);
+ au_di_free(dinfo);
+}
+
+int au_di_realloc(struct au_dinfo *dinfo, int nbr, int may_shrink)
+{
+ int err, sz;
+ struct au_hdentry *hdp;
+
+ AuRwMustWriteLock(&dinfo->di_rwsem);
+
+ err = -ENOMEM;
+ sz = sizeof(*hdp) * (dinfo->di_bbot + 1);
+ if (!sz)
+ sz = sizeof(*hdp);
+ hdp = au_kzrealloc(dinfo->di_hdentry, sz, sizeof(*hdp) * nbr, GFP_NOFS,
+ may_shrink);
+ if (hdp) {
+ dinfo->di_hdentry = hdp;
+ err = 0;
+ }
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void do_ii_write_lock(struct inode *inode, unsigned int lsc)
+{
+ switch (lsc) {
+ case AuLsc_DI_CHILD:
+ ii_write_lock_child(inode);
+ break;
+ case AuLsc_DI_CHILD2:
+ ii_write_lock_child2(inode);
+ break;
+ case AuLsc_DI_CHILD3:
+ ii_write_lock_child3(inode);
+ break;
+ case AuLsc_DI_PARENT:
+ ii_write_lock_parent(inode);
+ break;
+ case AuLsc_DI_PARENT2:
+ ii_write_lock_parent2(inode);
+ break;
+ case AuLsc_DI_PARENT3:
+ ii_write_lock_parent3(inode);
+ break;
+ default:
+ BUG();
+ }
+}
+
+static void do_ii_read_lock(struct inode *inode, unsigned int lsc)
+{
+ switch (lsc) {
+ case AuLsc_DI_CHILD:
+ ii_read_lock_child(inode);
+ break;
+ case AuLsc_DI_CHILD2:
+ ii_read_lock_child2(inode);
+ break;
+ case AuLsc_DI_CHILD3:
+ ii_read_lock_child3(inode);
+ break;
+ case AuLsc_DI_PARENT:
+ ii_read_lock_parent(inode);
+ break;
+ case AuLsc_DI_PARENT2:
+ ii_read_lock_parent2(inode);
+ break;
+ case AuLsc_DI_PARENT3:
+ ii_read_lock_parent3(inode);
+ break;
+ default:
+ BUG();
+ }
+}
+
+void di_read_lock(struct dentry *d, int flags, unsigned int lsc)
+{
+ struct inode *inode;
+
+ au_rw_read_lock_nested(&au_di(d)->di_rwsem, lsc);
+ if (d_really_is_positive(d)) {
+ inode = d_inode(d);
+ if (au_ftest_lock(flags, IW))
+ do_ii_write_lock(inode, lsc);
+ else if (au_ftest_lock(flags, IR))
+ do_ii_read_lock(inode, lsc);
+ }
+}
+
+void di_read_unlock(struct dentry *d, int flags)
+{
+ struct inode *inode;
+
+ if (d_really_is_positive(d)) {
+ inode = d_inode(d);
+ if (au_ftest_lock(flags, IW)) {
+ au_dbg_verify_dinode(d);
+ ii_write_unlock(inode);
+ } else if (au_ftest_lock(flags, IR)) {
+ au_dbg_verify_dinode(d);
+ ii_read_unlock(inode);
+ }
+ }
+ au_rw_read_unlock(&au_di(d)->di_rwsem);
+}
+
+void di_downgrade_lock(struct dentry *d, int flags)
+{
+ if (d_really_is_positive(d) && au_ftest_lock(flags, IR))
+ ii_downgrade_lock(d_inode(d));
+ au_rw_dgrade_lock(&au_di(d)->di_rwsem);
+}
+
+void di_write_lock(struct dentry *d, unsigned int lsc)
+{
+ au_rw_write_lock_nested(&au_di(d)->di_rwsem, lsc);
+ if (d_really_is_positive(d))
+ do_ii_write_lock(d_inode(d), lsc);
+}
+
+void di_write_unlock(struct dentry *d)
+{
+ au_dbg_verify_dinode(d);
+ if (d_really_is_positive(d))
+ ii_write_unlock(d_inode(d));
+ au_rw_write_unlock(&au_di(d)->di_rwsem);
+}
+
+void di_write_lock2_child(struct dentry *d1, struct dentry *d2, int isdir)
+{
+ AuDebugOn(d1 == d2
+ || d_inode(d1) == d_inode(d2)
+ || d1->d_sb != d2->d_sb);
+
+ if ((isdir && au_test_subdir(d1, d2))
+ || d1 < d2) {
+ di_write_lock_child(d1);
+ di_write_lock_child2(d2);
+ } else {
+ di_write_lock_child(d2);
+ di_write_lock_child2(d1);
+ }
+}
+
+void di_write_lock2_parent(struct dentry *d1, struct dentry *d2, int isdir)
+{
+ AuDebugOn(d1 == d2
+ || d_inode(d1) == d_inode(d2)
+ || d1->d_sb != d2->d_sb);
+
+ if ((isdir && au_test_subdir(d1, d2))
+ || d1 < d2) {
+ di_write_lock_parent(d1);
+ di_write_lock_parent2(d2);
+ } else {
+ di_write_lock_parent(d2);
+ di_write_lock_parent2(d1);
+ }
+}
+
+void di_write_unlock2(struct dentry *d1, struct dentry *d2)
+{
+ di_write_unlock(d1);
+ if (d_inode(d1) == d_inode(d2))
+ au_rw_write_unlock(&au_di(d2)->di_rwsem);
+ else
+ di_write_unlock(d2);
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct dentry *au_h_dptr(struct dentry *dentry, aufs_bindex_t bindex)
+{
+ struct dentry *d;
+
+ DiMustAnyLock(dentry);
+
+ if (au_dbtop(dentry) < 0 || bindex < au_dbtop(dentry))
+ return NULL;
+ AuDebugOn(bindex < 0);
+ d = au_hdentry(au_di(dentry), bindex)->hd_dentry;
+ AuDebugOn(d && au_dcount(d) <= 0);
+ return d;
+}
+
+/*
+ * extended version of au_h_dptr().
+ * returns a hashed and positive (or linkable) h_dentry in bindex, NULL, or
+ * error.
+ */
+struct dentry *au_h_d_alias(struct dentry *dentry, aufs_bindex_t bindex)
+{
+ struct dentry *h_dentry;
+ struct inode *inode, *h_inode;
+
+ AuDebugOn(d_really_is_negative(dentry));
+
+ h_dentry = NULL;
+ if (au_dbtop(dentry) <= bindex
+ && bindex <= au_dbbot(dentry))
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (h_dentry && !au_d_linkable(h_dentry)) {
+ dget(h_dentry);
+ goto out; /* success */
+ }
+
+ inode = d_inode(dentry);
+ AuDebugOn(bindex < au_ibtop(inode));
+ AuDebugOn(au_ibbot(inode) < bindex);
+ h_inode = au_h_iptr(inode, bindex);
+ h_dentry = d_find_alias(h_inode);
+ if (h_dentry) {
+ if (!IS_ERR(h_dentry)) {
+ if (!au_d_linkable(h_dentry))
+ goto out; /* success */
+ dput(h_dentry);
+ } else
+ goto out;
+ }
+
+ if (au_opt_test(au_mntflags(dentry->d_sb), PLINK)) {
+ h_dentry = au_plink_lkup(inode, bindex);
+ AuDebugOn(!h_dentry);
+ if (!IS_ERR(h_dentry)) {
+ if (!au_d_hashed_positive(h_dentry))
+ goto out; /* success */
+ dput(h_dentry);
+ h_dentry = NULL;
+ }
+ }
+
+out:
+ AuDbgDentry(h_dentry);
+ return h_dentry;
+}
+
+aufs_bindex_t au_dbtail(struct dentry *dentry)
+{
+ aufs_bindex_t bbot, bwh;
+
+ bbot = au_dbbot(dentry);
+ if (0 <= bbot) {
+ bwh = au_dbwh(dentry);
+ if (!bwh)
+ return bwh;
+ if (0 < bwh && bwh < bbot)
+ return bwh - 1;
+ }
+ return bbot;
+}
+
+aufs_bindex_t au_dbtaildir(struct dentry *dentry)
+{
+ aufs_bindex_t bbot, bopq;
+
+ bbot = au_dbtail(dentry);
+ if (0 <= bbot) {
+ bopq = au_dbdiropq(dentry);
+ if (0 <= bopq && bopq < bbot)
+ bbot = bopq;
+ }
+ return bbot;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_set_h_dptr(struct dentry *dentry, aufs_bindex_t bindex,
+ struct dentry *h_dentry)
+{
+ struct au_dinfo *dinfo;
+ struct au_hdentry *hd;
+ struct au_branch *br;
+
+ DiMustWriteLock(dentry);
+
+ dinfo = au_di(dentry);
+ hd = au_hdentry(dinfo, bindex);
+ au_hdput(hd);
+ hd->hd_dentry = h_dentry;
+ if (h_dentry) {
+ br = au_sbr(dentry->d_sb, bindex);
+ hd->hd_id = br->br_id;
+ }
+}
+
+int au_dbrange_test(struct dentry *dentry)
+{
+ int err;
+ aufs_bindex_t btop, bbot;
+
+ err = 0;
+ btop = au_dbtop(dentry);
+ bbot = au_dbbot(dentry);
+ if (btop >= 0)
+ AuDebugOn(bbot < 0 && btop > bbot);
+ else {
+ err = -EIO;
+ AuDebugOn(bbot >= 0);
+ }
+
+ return err;
+}
+
+int au_digen_test(struct dentry *dentry, unsigned int sigen)
+{
+ int err;
+
+ err = 0;
+ if (unlikely(au_digen(dentry) != sigen
+ || au_iigen_test(d_inode(dentry), sigen)))
+ err = -EIO;
+
+ return err;
+}
+
+void au_update_digen(struct dentry *dentry)
+{
+ atomic_set(&au_di(dentry)->di_generation, au_sigen(dentry->d_sb));
+ /* smp_mb(); */ /* atomic_set */
+}
+
+void au_update_dbrange(struct dentry *dentry, int do_put_zero)
+{
+ struct au_dinfo *dinfo;
+ struct dentry *h_d;
+ struct au_hdentry *hdp;
+ aufs_bindex_t bindex, bbot;
+
+ DiMustWriteLock(dentry);
+
+ dinfo = au_di(dentry);
+ if (!dinfo || dinfo->di_btop < 0)
+ return;
+
+ if (do_put_zero) {
+ bbot = dinfo->di_bbot;
+ bindex = dinfo->di_btop;
+ hdp = au_hdentry(dinfo, bindex);
+ for (; bindex <= bbot; bindex++, hdp++) {
+ h_d = hdp->hd_dentry;
+ if (h_d && d_is_negative(h_d))
+ au_set_h_dptr(dentry, bindex, NULL);
+ }
+ }
+
+ dinfo->di_btop = 0;
+ hdp = au_hdentry(dinfo, dinfo->di_btop);
+ for (; dinfo->di_btop <= dinfo->di_bbot; dinfo->di_btop++, hdp++)
+ if (hdp->hd_dentry)
+ break;
+ if (dinfo->di_btop > dinfo->di_bbot) {
+ dinfo->di_btop = -1;
+ dinfo->di_bbot = -1;
+ return;
+ }
+
+ hdp = au_hdentry(dinfo, dinfo->di_bbot);
+ for (; dinfo->di_bbot >= 0; dinfo->di_bbot--, hdp--)
+ if (hdp->hd_dentry)
+ break;
+ AuDebugOn(dinfo->di_btop > dinfo->di_bbot || dinfo->di_bbot < 0);
+}
+
+void au_update_dbtop(struct dentry *dentry)
+{
+ aufs_bindex_t bindex, bbot;
+ struct dentry *h_dentry;
+
+ bbot = au_dbbot(dentry);
+ for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (!h_dentry)
+ continue;
+ if (d_is_positive(h_dentry)) {
+ au_set_dbtop(dentry, bindex);
+ return;
+ }
+ au_set_h_dptr(dentry, bindex, NULL);
+ }
+}
+
+void au_update_dbbot(struct dentry *dentry)
+{
+ aufs_bindex_t bindex, btop;
+ struct dentry *h_dentry;
+
+ btop = au_dbtop(dentry);
+ for (bindex = au_dbbot(dentry); bindex >= btop; bindex--) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (!h_dentry)
+ continue;
+ if (d_is_positive(h_dentry)) {
+ au_set_dbbot(dentry, bindex);
+ return;
+ }
+ au_set_h_dptr(dentry, bindex, NULL);
+ }
+}
+
+int au_find_dbindex(struct dentry *dentry, struct dentry *h_dentry)
+{
+ aufs_bindex_t bindex, bbot;
+
+ bbot = au_dbbot(dentry);
+ for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++)
+ if (au_h_dptr(dentry, bindex) == h_dentry)
+ return bindex;
+ return -1;
+}
diff --git a/fs/aufs/dir.c b/fs/aufs/dir.c
new file mode 100644
index 0000000000..68e87d6f28
--- /dev/null
+++ b/fs/aufs/dir.c
@@ -0,0 +1,763 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * directory operations
+ */
+
+#include <linux/fs_stack.h>
+#include <linux/iversion.h>
+#include "aufs.h"
+
+void au_add_nlink(struct inode *dir, struct inode *h_dir)
+{
+ unsigned int nlink;
+
+ AuDebugOn(!S_ISDIR(dir->i_mode) || !S_ISDIR(h_dir->i_mode));
+
+ nlink = dir->i_nlink;
+ nlink += h_dir->i_nlink - 2;
+ if (h_dir->i_nlink < 2)
+ nlink += 2;
+ smp_mb(); /* for i_nlink */
+ /* 0 can happen in revaliding */
+ set_nlink(dir, nlink);
+}
+
+void au_sub_nlink(struct inode *dir, struct inode *h_dir)
+{
+ unsigned int nlink;
+
+ AuDebugOn(!S_ISDIR(dir->i_mode) || !S_ISDIR(h_dir->i_mode));
+
+ nlink = dir->i_nlink;
+ nlink -= h_dir->i_nlink - 2;
+ if (h_dir->i_nlink < 2)
+ nlink -= 2;
+ smp_mb(); /* for i_nlink */
+ /* nlink == 0 means the branch-fs is broken */
+ set_nlink(dir, nlink);
+}
+
+loff_t au_dir_size(struct file *file, struct dentry *dentry)
+{
+ loff_t sz;
+ aufs_bindex_t bindex, bbot;
+ struct file *h_file;
+ struct dentry *h_dentry;
+
+ sz = 0;
+ if (file) {
+ AuDebugOn(!d_is_dir(file->f_path.dentry));
+
+ bbot = au_fbbot_dir(file);
+ for (bindex = au_fbtop(file);
+ bindex <= bbot && sz < KMALLOC_MAX_SIZE;
+ bindex++) {
+ h_file = au_hf_dir(file, bindex);
+ if (h_file && file_inode(h_file))
+ sz += vfsub_f_size_read(h_file);
+ }
+ } else {
+ AuDebugOn(!dentry);
+ AuDebugOn(!d_is_dir(dentry));
+
+ bbot = au_dbtaildir(dentry);
+ for (bindex = au_dbtop(dentry);
+ bindex <= bbot && sz < KMALLOC_MAX_SIZE;
+ bindex++) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (h_dentry && d_is_positive(h_dentry))
+ sz += i_size_read(d_inode(h_dentry));
+ }
+ }
+ if (sz < KMALLOC_MAX_SIZE)
+ sz = roundup_pow_of_two(sz);
+ if (sz > KMALLOC_MAX_SIZE)
+ sz = KMALLOC_MAX_SIZE;
+ else if (sz < NAME_MAX) {
+ BUILD_BUG_ON(AUFS_RDBLK_DEF < NAME_MAX);
+ sz = AUFS_RDBLK_DEF;
+ }
+ return sz;
+}
+
+struct au_dir_ts_arg {
+ struct dentry *dentry;
+ aufs_bindex_t brid;
+};
+
+static void au_do_dir_ts(void *arg)
+{
+ struct au_dir_ts_arg *a = arg;
+ struct au_dtime dt;
+ struct path h_path;
+ struct inode *dir, *h_dir;
+ struct super_block *sb;
+ struct au_branch *br;
+ struct au_hinode *hdir;
+ int err;
+ aufs_bindex_t btop, bindex;
+
+ sb = a->dentry->d_sb;
+ if (d_really_is_negative(a->dentry))
+ goto out;
+ /* no dir->i_mutex lock */
+ aufs_read_lock(a->dentry, AuLock_DW); /* noflush */
+
+ dir = d_inode(a->dentry);
+ btop = au_ibtop(dir);
+ bindex = au_br_index(sb, a->brid);
+ if (bindex < btop)
+ goto out_unlock;
+
+ br = au_sbr(sb, bindex);
+ h_path.dentry = au_h_dptr(a->dentry, bindex);
+ if (!h_path.dentry)
+ goto out_unlock;
+ h_path.mnt = au_br_mnt(br);
+ au_dtime_store(&dt, a->dentry, &h_path);
+
+ br = au_sbr(sb, btop);
+ if (!au_br_writable(br->br_perm))
+ goto out_unlock;
+ h_path.dentry = au_h_dptr(a->dentry, btop);
+ h_path.mnt = au_br_mnt(br);
+ err = vfsub_mnt_want_write(h_path.mnt);
+ if (err)
+ goto out_unlock;
+ hdir = au_hi(dir, btop);
+ au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
+ h_dir = au_h_iptr(dir, btop);
+ if (h_dir->i_nlink
+ && timespec64_compare(&h_dir->i_mtime, &dt.dt_mtime) < 0) {
+ dt.dt_h_path = h_path;
+ au_dtime_revert(&dt);
+ }
+ au_hn_inode_unlock(hdir);
+ vfsub_mnt_drop_write(h_path.mnt);
+ au_cpup_attr_timesizes(dir);
+
+out_unlock:
+ aufs_read_unlock(a->dentry, AuLock_DW);
+out:
+ dput(a->dentry);
+ au_nwt_done(&au_sbi(sb)->si_nowait);
+ au_kfree_try_rcu(arg);
+}
+
+void au_dir_ts(struct inode *dir, aufs_bindex_t bindex)
+{
+ int perm, wkq_err;
+ aufs_bindex_t btop;
+ struct au_dir_ts_arg *arg;
+ struct dentry *dentry;
+ struct super_block *sb;
+
+ IMustLock(dir);
+
+ dentry = d_find_any_alias(dir);
+ AuDebugOn(!dentry);
+ sb = dentry->d_sb;
+ btop = au_ibtop(dir);
+ if (btop == bindex) {
+ au_cpup_attr_timesizes(dir);
+ goto out;
+ }
+
+ perm = au_sbr_perm(sb, btop);
+ if (!au_br_writable(perm))
+ goto out;
+
+ arg = kmalloc(sizeof(*arg), GFP_NOFS);
+ if (!arg)
+ goto out;
+
+ arg->dentry = dget(dentry); /* will be dput-ted by au_do_dir_ts() */
+ arg->brid = au_sbr_id(sb, bindex);
+ wkq_err = au_wkq_nowait(au_do_dir_ts, arg, sb, /*flags*/0);
+ if (unlikely(wkq_err)) {
+ pr_err("wkq %d\n", wkq_err);
+ dput(dentry);
+ au_kfree_try_rcu(arg);
+ }
+
+out:
+ dput(dentry);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int reopen_dir(struct file *file)
+{
+ int err;
+ unsigned int flags;
+ aufs_bindex_t bindex, btail, btop;
+ struct dentry *dentry, *h_dentry;
+ struct file *h_file;
+
+ /* open all lower dirs */
+ dentry = file->f_path.dentry;
+ btop = au_dbtop(dentry);
+ for (bindex = au_fbtop(file); bindex < btop; bindex++)
+ au_set_h_fptr(file, bindex, NULL);
+ au_set_fbtop(file, btop);
+
+ btail = au_dbtaildir(dentry);
+ for (bindex = au_fbbot_dir(file); btail < bindex; bindex--)
+ au_set_h_fptr(file, bindex, NULL);
+ au_set_fbbot_dir(file, btail);
+
+ flags = vfsub_file_flags(file);
+ for (bindex = btop; bindex <= btail; bindex++) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (!h_dentry)
+ continue;
+ h_file = au_hf_dir(file, bindex);
+ if (h_file)
+ continue;
+
+ h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out; /* close all? */
+ au_set_h_fptr(file, bindex, h_file);
+ }
+ au_update_figen(file);
+ /* todo: necessary? */
+ /* file->f_ra = h_file->f_ra; */
+ err = 0;
+
+out:
+ return err;
+}
+
+static int do_open_dir(struct file *file, int flags, struct file *h_file)
+{
+ int err;
+ aufs_bindex_t bindex, btail;
+ struct dentry *dentry, *h_dentry;
+ struct vfsmount *mnt;
+
+ FiMustWriteLock(file);
+ AuDebugOn(h_file);
+
+ err = 0;
+ mnt = file->f_path.mnt;
+ dentry = file->f_path.dentry;
+ file->f_version = inode_query_iversion(d_inode(dentry));
+ bindex = au_dbtop(dentry);
+ au_set_fbtop(file, bindex);
+ btail = au_dbtaildir(dentry);
+ au_set_fbbot_dir(file, btail);
+ for (; !err && bindex <= btail; bindex++) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (!h_dentry)
+ continue;
+
+ err = vfsub_test_mntns(mnt, h_dentry->d_sb);
+ if (unlikely(err))
+ break;
+ h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0);
+ if (IS_ERR(h_file)) {
+ err = PTR_ERR(h_file);
+ break;
+ }
+ au_set_h_fptr(file, bindex, h_file);
+ }
+ au_update_figen(file);
+ /* todo: necessary? */
+ /* file->f_ra = h_file->f_ra; */
+ if (!err)
+ return 0; /* success */
+
+ /* close all */
+ for (bindex = au_fbtop(file); bindex <= btail; bindex++)
+ au_set_h_fptr(file, bindex, NULL);
+ au_set_fbtop(file, -1);
+ au_set_fbbot_dir(file, -1);
+
+ return err;
+}
+
+static int aufs_open_dir(struct inode *inode __maybe_unused,
+ struct file *file)
+{
+ int err;
+ struct super_block *sb;
+ struct au_fidir *fidir;
+
+ err = -ENOMEM;
+ sb = file->f_path.dentry->d_sb;
+ si_read_lock(sb, AuLock_FLUSH);
+ fidir = au_fidir_alloc(sb);
+ if (fidir) {
+ struct au_do_open_args args = {
+ .open = do_open_dir,
+ .fidir = fidir
+ };
+ err = au_do_open(file, &args);
+ if (unlikely(err))
+ au_kfree_rcu(fidir);
+ }
+ si_read_unlock(sb);
+ return err;
+}
+
+static int aufs_release_dir(struct inode *inode __maybe_unused,
+ struct file *file)
+{
+ struct au_vdir *vdir_cache;
+ struct au_finfo *finfo;
+ struct au_fidir *fidir;
+ struct au_hfile *hf;
+ aufs_bindex_t bindex, bbot;
+
+ finfo = au_fi(file);
+ fidir = finfo->fi_hdir;
+ if (fidir) {
+ au_hbl_del(&finfo->fi_hlist,
+ &au_sbi(file->f_path.dentry->d_sb)->si_files);
+ vdir_cache = fidir->fd_vdir_cache; /* lock-free */
+ if (vdir_cache)
+ au_vdir_free(vdir_cache);
+
+ bindex = finfo->fi_btop;
+ if (bindex >= 0) {
+ hf = fidir->fd_hfile + bindex;
+ /*
+ * calls fput() instead of filp_close(),
+ * since no dnotify or lock for the lower file.
+ */
+ bbot = fidir->fd_bbot;
+ for (; bindex <= bbot; bindex++, hf++)
+ if (hf->hf_file)
+ au_hfput(hf, /*execed*/0);
+ }
+ au_kfree_rcu(fidir);
+ finfo->fi_hdir = NULL;
+ }
+ au_finfo_fin(file);
+ return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_do_flush_dir(struct file *file, fl_owner_t id)
+{
+ int err;
+ aufs_bindex_t bindex, bbot;
+ struct file *h_file;
+
+ err = 0;
+ bbot = au_fbbot_dir(file);
+ for (bindex = au_fbtop(file); !err && bindex <= bbot; bindex++) {
+ h_file = au_hf_dir(file, bindex);
+ if (h_file)
+ err = vfsub_flush(h_file, id);
+ }
+ return err;
+}
+
+static int aufs_flush_dir(struct file *file, fl_owner_t id)
+{
+ return au_do_flush(file, id, au_do_flush_dir);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_do_fsync_dir_no_file(struct dentry *dentry, int datasync)
+{
+ int err;
+ aufs_bindex_t bbot, bindex;
+ struct inode *inode;
+ struct super_block *sb;
+
+ err = 0;
+ sb = dentry->d_sb;
+ inode = d_inode(dentry);
+ IMustLock(inode);
+ bbot = au_dbbot(dentry);
+ for (bindex = au_dbtop(dentry); !err && bindex <= bbot; bindex++) {
+ struct path h_path;
+
+ if (au_test_ro(sb, bindex, inode))
+ continue;
+ h_path.dentry = au_h_dptr(dentry, bindex);
+ if (!h_path.dentry)
+ continue;
+
+ h_path.mnt = au_sbr_mnt(sb, bindex);
+ err = vfsub_fsync(NULL, &h_path, datasync);
+ }
+
+ return err;
+}
+
+static int au_do_fsync_dir(struct file *file, int datasync)
+{
+ int err;
+ aufs_bindex_t bbot, bindex;
+ struct file *h_file;
+ struct super_block *sb;
+ struct inode *inode;
+
+ err = au_reval_and_lock_fdi(file, reopen_dir, /*wlock*/1, /*fi_lsc*/0);
+ if (unlikely(err))
+ goto out;
+
+ inode = file_inode(file);
+ sb = inode->i_sb;
+ bbot = au_fbbot_dir(file);
+ for (bindex = au_fbtop(file); !err && bindex <= bbot; bindex++) {
+ h_file = au_hf_dir(file, bindex);
+ if (!h_file || au_test_ro(sb, bindex, inode))
+ continue;
+
+ err = vfsub_fsync(h_file, &h_file->f_path, datasync);
+ }
+
+out:
+ return err;
+}
+
+/*
+ * @file may be NULL
+ */
+static int aufs_fsync_dir(struct file *file, loff_t start, loff_t end,
+ int datasync)
+{
+ int err;
+ struct dentry *dentry;
+ struct inode *inode;
+ struct super_block *sb;
+
+ err = 0;
+ dentry = file->f_path.dentry;
+ inode = d_inode(dentry);
+ inode_lock(inode);
+ sb = dentry->d_sb;
+ si_noflush_read_lock(sb);
+ if (file)
+ err = au_do_fsync_dir(file, datasync);
+ else {
+ di_write_lock_child(dentry);
+ err = au_do_fsync_dir_no_file(dentry, datasync);
+ }
+ au_cpup_attr_timesizes(inode);
+ di_write_unlock(dentry);
+ if (file)
+ fi_write_unlock(file);
+
+ si_read_unlock(sb);
+ inode_unlock(inode);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int aufs_iterate_shared(struct file *file, struct dir_context *ctx)
+{
+ int err;
+ struct dentry *dentry;
+ struct inode *inode, *h_inode;
+ struct super_block *sb;
+
+ AuDbg("%pD, ctx{%ps, %llu}\n", file, ctx->actor, ctx->pos);
+
+ dentry = file->f_path.dentry;
+ inode = d_inode(dentry);
+ IMustLock(inode);
+
+ sb = dentry->d_sb;
+ si_read_lock(sb, AuLock_FLUSH);
+ err = au_reval_and_lock_fdi(file, reopen_dir, /*wlock*/1, /*fi_lsc*/0);
+ if (unlikely(err))
+ goto out;
+ err = au_alive_dir(dentry);
+ if (!err)
+ err = au_vdir_init(file);
+ di_downgrade_lock(dentry, AuLock_IR);
+ if (unlikely(err))
+ goto out_unlock;
+
+ h_inode = au_h_iptr(inode, au_ibtop(inode));
+ if (!au_test_nfsd()) {
+ err = au_vdir_fill_de(file, ctx);
+ fsstack_copy_attr_atime(inode, h_inode);
+ } else {
+ /*
+ * nfsd filldir may call lookup_one_len(), vfs_getattr(),
+ * encode_fh() and others.
+ */
+ atomic_inc(&h_inode->i_count);
+ di_read_unlock(dentry, AuLock_IR);
+ si_read_unlock(sb);
+ err = au_vdir_fill_de(file, ctx);
+ fsstack_copy_attr_atime(inode, h_inode);
+ fi_write_unlock(file);
+ iput(h_inode);
+
+ AuTraceErr(err);
+ return err;
+ }
+
+out_unlock:
+ di_read_unlock(dentry, AuLock_IR);
+ fi_write_unlock(file);
+out:
+ si_read_unlock(sb);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#define AuTestEmpty_WHONLY 1
+#define AuTestEmpty_CALLED (1 << 1)
+#define AuTestEmpty_SHWH (1 << 2)
+#define au_ftest_testempty(flags, name) ((flags) & AuTestEmpty_##name)
+#define au_fset_testempty(flags, name) \
+ do { (flags) |= AuTestEmpty_##name; } while (0)
+#define au_fclr_testempty(flags, name) \
+ do { (flags) &= ~AuTestEmpty_##name; } while (0)
+
+#ifndef CONFIG_AUFS_SHWH
+#undef AuTestEmpty_SHWH
+#define AuTestEmpty_SHWH 0
+#endif
+
+struct test_empty_arg {
+ struct dir_context ctx;
+ struct au_nhash *whlist;
+ unsigned int flags;
+ int err;
+ aufs_bindex_t bindex;
+};
+
+static int test_empty_cb(struct dir_context *ctx, const char *__name,
+ int namelen, loff_t offset __maybe_unused, u64 ino,
+ unsigned int d_type)
+{
+ struct test_empty_arg *arg = container_of(ctx, struct test_empty_arg,
+ ctx);
+ char *name = (void *)__name;
+
+ arg->err = 0;
+ au_fset_testempty(arg->flags, CALLED);
+ /* smp_mb(); */
+ if (name[0] == '.'
+ && (namelen == 1 || (name[1] == '.' && namelen == 2)))
+ goto out; /* success */
+
+ if (namelen <= AUFS_WH_PFX_LEN
+ || memcmp(name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) {
+ if (au_ftest_testempty(arg->flags, WHONLY)
+ && !au_nhash_test_known_wh(arg->whlist, name, namelen))
+ arg->err = -ENOTEMPTY;
+ goto out;
+ }
+
+ name += AUFS_WH_PFX_LEN;
+ namelen -= AUFS_WH_PFX_LEN;
+ if (!au_nhash_test_known_wh(arg->whlist, name, namelen))
+ arg->err = au_nhash_append_wh
+ (arg->whlist, name, namelen, ino, d_type, arg->bindex,
+ au_ftest_testempty(arg->flags, SHWH));
+
+out:
+ /* smp_mb(); */
+ AuTraceErr(arg->err);
+ return arg->err;
+}
+
+static int do_test_empty(struct dentry *dentry, struct test_empty_arg *arg)
+{
+ int err;
+ struct file *h_file;
+ struct au_branch *br;
+
+ h_file = au_h_open(dentry, arg->bindex,
+ O_RDONLY | O_NONBLOCK | O_DIRECTORY | O_LARGEFILE,
+ /*file*/NULL, /*force_wr*/0);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out;
+
+ err = 0;
+ if (!au_opt_test(au_mntflags(dentry->d_sb), UDBA_NONE)
+ && !file_inode(h_file)->i_nlink)
+ goto out_put;
+
+ do {
+ arg->err = 0;
+ au_fclr_testempty(arg->flags, CALLED);
+ /* smp_mb(); */
+ err = vfsub_iterate_dir(h_file, &arg->ctx);
+ if (err >= 0)
+ err = arg->err;
+ } while (!err && au_ftest_testempty(arg->flags, CALLED));
+
+out_put:
+ fput(h_file);
+ br = au_sbr(dentry->d_sb, arg->bindex);
+ au_lcnt_dec(&br->br_nfiles);
+out:
+ return err;
+}
+
+struct do_test_empty_args {
+ int *errp;
+ struct dentry *dentry;
+ struct test_empty_arg *arg;
+};
+
+static void call_do_test_empty(void *args)
+{
+ struct do_test_empty_args *a = args;
+ *a->errp = do_test_empty(a->dentry, a->arg);
+}
+
+static int sio_test_empty(struct dentry *dentry, struct test_empty_arg *arg)
+{
+ int err, wkq_err;
+ struct dentry *h_dentry;
+ struct inode *h_inode;
+
+ h_dentry = au_h_dptr(dentry, arg->bindex);
+ h_inode = d_inode(h_dentry);
+ /* todo: i_mode changes anytime? */
+ inode_lock_shared_nested(h_inode, AuLsc_I_CHILD);
+ err = au_test_h_perm_sio(h_inode, MAY_EXEC | MAY_READ);
+ inode_unlock_shared(h_inode);
+ if (!err)
+ err = do_test_empty(dentry, arg);
+ else {
+ struct do_test_empty_args args = {
+ .errp = &err,
+ .dentry = dentry,
+ .arg = arg
+ };
+ unsigned int flags = arg->flags;
+
+ wkq_err = au_wkq_wait(call_do_test_empty, &args);
+ if (unlikely(wkq_err))
+ err = wkq_err;
+ arg->flags = flags;
+ }
+
+ return err;
+}
+
+int au_test_empty_lower(struct dentry *dentry)
+{
+ int err;
+ unsigned int rdhash;
+ aufs_bindex_t bindex, btop, btail;
+ struct au_nhash whlist;
+ struct test_empty_arg arg = {
+ .ctx = {
+ .actor = test_empty_cb
+ }
+ };
+ int (*test_empty)(struct dentry *dentry, struct test_empty_arg *arg);
+
+ SiMustAnyLock(dentry->d_sb);
+
+ rdhash = au_sbi(dentry->d_sb)->si_rdhash;
+ if (!rdhash)
+ rdhash = au_rdhash_est(au_dir_size(/*file*/NULL, dentry));
+ err = au_nhash_alloc(&whlist, rdhash, GFP_NOFS);
+ if (unlikely(err))
+ goto out;
+
+ arg.flags = 0;
+ arg.whlist = &whlist;
+ btop = au_dbtop(dentry);
+ if (au_opt_test(au_mntflags(dentry->d_sb), SHWH))
+ au_fset_testempty(arg.flags, SHWH);
+ test_empty = do_test_empty;
+ if (au_opt_test(au_mntflags(dentry->d_sb), DIRPERM1))
+ test_empty = sio_test_empty;
+ arg.bindex = btop;
+ err = test_empty(dentry, &arg);
+ if (unlikely(err))
+ goto out_whlist;
+
+ au_fset_testempty(arg.flags, WHONLY);
+ btail = au_dbtaildir(dentry);
+ for (bindex = btop + 1; !err && bindex <= btail; bindex++) {
+ struct dentry *h_dentry;
+
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (h_dentry && d_is_positive(h_dentry)) {
+ arg.bindex = bindex;
+ err = test_empty(dentry, &arg);
+ }
+ }
+
+out_whlist:
+ au_nhash_wh_free(&whlist);
+out:
+ return err;
+}
+
+int au_test_empty(struct dentry *dentry, struct au_nhash *whlist)
+{
+ int err;
+ struct test_empty_arg arg = {
+ .ctx = {
+ .actor = test_empty_cb
+ }
+ };
+ aufs_bindex_t bindex, btail;
+
+ err = 0;
+ arg.whlist = whlist;
+ arg.flags = AuTestEmpty_WHONLY;
+ if (au_opt_test(au_mntflags(dentry->d_sb), SHWH))
+ au_fset_testempty(arg.flags, SHWH);
+ btail = au_dbtaildir(dentry);
+ for (bindex = au_dbtop(dentry); !err && bindex <= btail; bindex++) {
+ struct dentry *h_dentry;
+
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (h_dentry && d_is_positive(h_dentry)) {
+ arg.bindex = bindex;
+ err = sio_test_empty(dentry, &arg);
+ }
+ }
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+const struct file_operations aufs_dir_fop = {
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+ .read = generic_read_dir,
+ .iterate_shared = aufs_iterate_shared,
+ .unlocked_ioctl = aufs_ioctl_dir,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = aufs_compat_ioctl_dir,
+#endif
+ .open = aufs_open_dir,
+ .release = aufs_release_dir,
+ .flush = aufs_flush_dir,
+ .fsync = aufs_fsync_dir
+};
diff --git a/fs/aufs/dir.h b/fs/aufs/dir.h
new file mode 100644
index 0000000000..5c8065d258
--- /dev/null
+++ b/fs/aufs/dir.h
@@ -0,0 +1,134 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * directory operations
+ */
+
+#ifndef __AUFS_DIR_H__
+#define __AUFS_DIR_H__
+
+#ifdef __KERNEL__
+
+#include <linux/fs.h>
+
+/* ---------------------------------------------------------------------- */
+
+/* need to be faster and smaller */
+
+struct au_nhash {
+ unsigned int nh_num;
+ struct hlist_head *nh_head;
+};
+
+struct au_vdir_destr {
+ unsigned char len;
+ unsigned char name[0];
+} __packed;
+
+struct au_vdir_dehstr {
+ struct hlist_node hash;
+ struct au_vdir_destr *str;
+ struct rcu_head rcu;
+} ____cacheline_aligned_in_smp;
+
+struct au_vdir_de {
+ ino_t de_ino;
+ unsigned char de_type;
+ /* caution: packed */
+ struct au_vdir_destr de_str;
+} __packed;
+
+struct au_vdir_wh {
+ struct hlist_node wh_hash;
+#ifdef CONFIG_AUFS_SHWH
+ ino_t wh_ino;
+ aufs_bindex_t wh_bindex;
+ unsigned char wh_type;
+#else
+ aufs_bindex_t wh_bindex;
+#endif
+ /* caution: packed */
+ struct au_vdir_destr wh_str;
+} __packed;
+
+union au_vdir_deblk_p {
+ unsigned char *deblk;
+ struct au_vdir_de *de;
+};
+
+struct au_vdir {
+ unsigned char **vd_deblk;
+ unsigned long vd_nblk;
+ struct {
+ unsigned long ul;
+ union au_vdir_deblk_p p;
+ } vd_last;
+
+ u64 vd_version;
+ unsigned int vd_deblk_sz;
+ unsigned long vd_jiffy;
+ struct rcu_head rcu;
+} ____cacheline_aligned_in_smp;
+
+/* ---------------------------------------------------------------------- */
+
+/* dir.c */
+extern const struct file_operations aufs_dir_fop;
+void au_add_nlink(struct inode *dir, struct inode *h_dir);
+void au_sub_nlink(struct inode *dir, struct inode *h_dir);
+loff_t au_dir_size(struct file *file, struct dentry *dentry);
+void au_dir_ts(struct inode *dir, aufs_bindex_t bsrc);
+int au_test_empty_lower(struct dentry *dentry);
+int au_test_empty(struct dentry *dentry, struct au_nhash *whlist);
+
+/* vdir.c */
+unsigned int au_rdhash_est(loff_t sz);
+int au_nhash_alloc(struct au_nhash *nhash, unsigned int num_hash, gfp_t gfp);
+void au_nhash_wh_free(struct au_nhash *whlist);
+int au_nhash_test_longer_wh(struct au_nhash *whlist, aufs_bindex_t btgt,
+ int limit);
+int au_nhash_test_known_wh(struct au_nhash *whlist, char *name, int nlen);
+int au_nhash_append_wh(struct au_nhash *whlist, char *name, int nlen, ino_t ino,
+ unsigned int d_type, aufs_bindex_t bindex,
+ unsigned char shwh);
+void au_vdir_free(struct au_vdir *vdir);
+int au_vdir_init(struct file *file);
+int au_vdir_fill_de(struct file *file, struct dir_context *ctx);
+
+/* ioctl.c */
+long aufs_ioctl_dir(struct file *file, unsigned int cmd, unsigned long arg);
+
+#ifdef CONFIG_AUFS_RDU
+/* rdu.c */
+long au_rdu_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
+#ifdef CONFIG_COMPAT
+long au_rdu_compat_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg);
+#endif
+#else
+AuStub(long, au_rdu_ioctl, return -EINVAL, struct file *file,
+ unsigned int cmd, unsigned long arg)
+#ifdef CONFIG_COMPAT
+AuStub(long, au_rdu_compat_ioctl, return -EINVAL, struct file *file,
+ unsigned int cmd, unsigned long arg)
+#endif
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_DIR_H__ */
diff --git a/fs/aufs/dirren.c b/fs/aufs/dirren.c
new file mode 100644
index 0000000000..0bd412ab68
--- /dev/null
+++ b/fs/aufs/dirren.c
@@ -0,0 +1,1316 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2017-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * special handling in renaming a directory
+ * in order to support looking-up the before-renamed name on the lower readonly
+ * branches
+ */
+
+#include <linux/byteorder/generic.h>
+#include "aufs.h"
+
+static void au_dr_hino_del(struct au_dr_br *dr, struct au_dr_hino *ent)
+{
+ int idx;
+
+ idx = au_dr_ihash(ent->dr_h_ino);
+ au_hbl_del(&ent->dr_hnode, dr->dr_h_ino + idx);
+}
+
+static int au_dr_hino_test_empty(struct au_dr_br *dr)
+{
+ int ret, i;
+ struct hlist_bl_head *hbl;
+
+ ret = 1;
+ for (i = 0; ret && i < AuDirren_NHASH; i++) {
+ hbl = dr->dr_h_ino + i;
+ hlist_bl_lock(hbl);
+ ret &= hlist_bl_empty(hbl);
+ hlist_bl_unlock(hbl);
+ }
+
+ return ret;
+}
+
+static struct au_dr_hino *au_dr_hino_find(struct au_dr_br *dr, ino_t ino)
+{
+ struct au_dr_hino *found, *ent;
+ struct hlist_bl_head *hbl;
+ struct hlist_bl_node *pos;
+ int idx;
+
+ found = NULL;
+ idx = au_dr_ihash(ino);
+ hbl = dr->dr_h_ino + idx;
+ hlist_bl_lock(hbl);
+ hlist_bl_for_each_entry(ent, pos, hbl, dr_hnode)
+ if (ent->dr_h_ino == ino) {
+ found = ent;
+ break;
+ }
+ hlist_bl_unlock(hbl);
+
+ return found;
+}
+
+int au_dr_hino_test_add(struct au_dr_br *dr, ino_t ino,
+ struct au_dr_hino *add_ent)
+{
+ int found, idx;
+ struct hlist_bl_head *hbl;
+ struct hlist_bl_node *pos;
+ struct au_dr_hino *ent;
+
+ found = 0;
+ idx = au_dr_ihash(ino);
+ hbl = dr->dr_h_ino + idx;
+#if 0
+ {
+ struct hlist_bl_node *tmp;
+
+ hlist_bl_for_each_entry_safe(ent, pos, tmp, hbl, dr_hnode)
+ AuDbg("hi%llu\n", (unsigned long long)ent->dr_h_ino);
+ }
+#endif
+ hlist_bl_lock(hbl);
+ hlist_bl_for_each_entry(ent, pos, hbl, dr_hnode)
+ if (ent->dr_h_ino == ino) {
+ found = 1;
+ break;
+ }
+ if (!found && add_ent)
+ hlist_bl_add_head(&add_ent->dr_hnode, hbl);
+ hlist_bl_unlock(hbl);
+
+ if (!found && add_ent)
+ AuDbg("i%llu added\n", (unsigned long long)add_ent->dr_h_ino);
+
+ return found;
+}
+
+void au_dr_hino_free(struct au_dr_br *dr)
+{
+ int i;
+ struct hlist_bl_head *hbl;
+ struct hlist_bl_node *pos, *tmp;
+ struct au_dr_hino *ent;
+
+ /* SiMustWriteLock(sb); */
+
+ for (i = 0; i < AuDirren_NHASH; i++) {
+ hbl = dr->dr_h_ino + i;
+ /* no spinlock since sbinfo must be write-locked */
+ hlist_bl_for_each_entry_safe(ent, pos, tmp, hbl, dr_hnode)
+ au_kfree_rcu(ent);
+ INIT_HLIST_BL_HEAD(hbl);
+ }
+}
+
+/* returns the number of inodes or an error */
+static int au_dr_hino_store(struct super_block *sb, struct au_branch *br,
+ struct file *hinofile)
+{
+ int err, i;
+ ssize_t ssz;
+ loff_t pos, oldsize;
+ __be64 u64;
+ struct inode *hinoinode;
+ struct hlist_bl_head *hbl;
+ struct hlist_bl_node *n1, *n2;
+ struct au_dr_hino *ent;
+
+ SiMustWriteLock(sb);
+ AuDebugOn(!au_br_writable(br->br_perm));
+
+ hinoinode = file_inode(hinofile);
+ oldsize = i_size_read(hinoinode);
+
+ err = 0;
+ pos = 0;
+ hbl = br->br_dirren.dr_h_ino;
+ for (i = 0; !err && i < AuDirren_NHASH; i++, hbl++) {
+ /* no bit-lock since sbinfo must be write-locked */
+ hlist_bl_for_each_entry_safe(ent, n1, n2, hbl, dr_hnode) {
+ AuDbg("hi%llu, %pD2\n",
+ (unsigned long long)ent->dr_h_ino, hinofile);
+ u64 = cpu_to_be64(ent->dr_h_ino);
+ ssz = vfsub_write_k(hinofile, &u64, sizeof(u64), &pos);
+ if (ssz == sizeof(u64))
+ continue;
+
+ /* write error */
+ pr_err("ssz %zd, %pD2\n", ssz, hinofile);
+ err = -ENOSPC;
+ if (ssz < 0)
+ err = ssz;
+ break;
+ }
+ }
+ /* regardless the error */
+ if (pos < oldsize) {
+ err = vfsub_trunc(&hinofile->f_path, pos, /*attr*/0, hinofile);
+ AuTraceErr(err);
+ }
+
+ AuTraceErr(err);
+ return err;
+}
+
+static int au_dr_hino_load(struct au_dr_br *dr, struct file *hinofile)
+{
+ int err, hidx;
+ ssize_t ssz;
+ size_t sz, n;
+ loff_t pos;
+ uint64_t u64;
+ struct au_dr_hino *ent;
+ struct inode *hinoinode;
+ struct hlist_bl_head *hbl;
+
+ err = 0;
+ pos = 0;
+ hbl = dr->dr_h_ino;
+ hinoinode = file_inode(hinofile);
+ sz = i_size_read(hinoinode);
+ AuDebugOn(sz % sizeof(u64));
+ n = sz / sizeof(u64);
+ while (n--) {
+ ssz = vfsub_read_k(hinofile, &u64, sizeof(u64), &pos);
+ if (unlikely(ssz != sizeof(u64))) {
+ pr_err("ssz %zd, %pD2\n", ssz, hinofile);
+ err = -EINVAL;
+ if (ssz < 0)
+ err = ssz;
+ goto out_free;
+ }
+
+ ent = kmalloc(sizeof(*ent), GFP_NOFS);
+ if (!ent) {
+ err = -ENOMEM;
+ AuTraceErr(err);
+ goto out_free;
+ }
+ ent->dr_h_ino = be64_to_cpu((__force __be64)u64);
+ AuDbg("hi%llu, %pD2\n",
+ (unsigned long long)ent->dr_h_ino, hinofile);
+ hidx = au_dr_ihash(ent->dr_h_ino);
+ au_hbl_add(&ent->dr_hnode, hbl + hidx);
+ }
+ goto out; /* success */
+
+out_free:
+ au_dr_hino_free(dr);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/*
+ * @bindex/@br is a switch to distinguish whether suspending hnotify or not.
+ * @path is a switch to distinguish load and store.
+ */
+static int au_dr_hino(struct super_block *sb, aufs_bindex_t bindex,
+ struct au_branch *br, const struct path *path)
+{
+ int err, flags;
+ unsigned char load, suspend;
+ struct file *hinofile;
+ struct au_hinode *hdir;
+ struct inode *dir, *delegated;
+ struct path hinopath;
+ struct qstr hinoname = QSTR_INIT(AUFS_WH_DR_BRHINO,
+ sizeof(AUFS_WH_DR_BRHINO) - 1);
+
+ AuDebugOn(bindex < 0 && !br);
+ AuDebugOn(bindex >= 0 && br);
+
+ err = -EINVAL;
+ suspend = !br;
+ if (suspend)
+ br = au_sbr(sb, bindex);
+ load = !!path;
+ if (!load) {
+ path = &br->br_path;
+ AuDebugOn(!au_br_writable(br->br_perm));
+ if (unlikely(!au_br_writable(br->br_perm)))
+ goto out;
+ }
+
+ hdir = NULL;
+ if (suspend) {
+ dir = d_inode(sb->s_root);
+ hdir = au_hinode(au_ii(dir), bindex);
+ dir = hdir->hi_inode;
+ au_hn_inode_lock_nested(hdir, AuLsc_I_CHILD);
+ } else {
+ dir = d_inode(path->dentry);
+ inode_lock_nested(dir, AuLsc_I_CHILD);
+ }
+ hinopath.dentry = vfsub_lkup_one(&hinoname, path->dentry);
+ err = PTR_ERR(hinopath.dentry);
+ if (IS_ERR(hinopath.dentry))
+ goto out_unlock;
+
+ err = 0;
+ flags = O_RDONLY;
+ if (load) {
+ if (d_is_negative(hinopath.dentry))
+ goto out_dput; /* success */
+ } else {
+ if (au_dr_hino_test_empty(&br->br_dirren)) {
+ if (d_is_positive(hinopath.dentry)) {
+ delegated = NULL;
+ err = vfsub_unlink(dir, &hinopath, &delegated,
+ /*force*/0);
+ AuTraceErr(err);
+ if (unlikely(err))
+ pr_err("ignored err %d, %pd2\n",
+ err, hinopath.dentry);
+ if (unlikely(err == -EWOULDBLOCK))
+ iput(delegated);
+ err = 0;
+ }
+ goto out_dput;
+ } else if (!d_is_positive(hinopath.dentry)) {
+ err = vfsub_create(dir, &hinopath, 0600,
+ /*want_excl*/false);
+ AuTraceErr(err);
+ if (unlikely(err))
+ goto out_dput;
+ }
+ flags = O_WRONLY;
+ }
+ hinopath.mnt = path->mnt;
+ hinofile = vfsub_dentry_open(&hinopath, flags);
+ if (suspend)
+ au_hn_inode_unlock(hdir);
+ else
+ inode_unlock(dir);
+ dput(hinopath.dentry);
+ AuTraceErrPtr(hinofile);
+ if (IS_ERR(hinofile)) {
+ err = PTR_ERR(hinofile);
+ goto out;
+ }
+
+ if (load)
+ err = au_dr_hino_load(&br->br_dirren, hinofile);
+ else
+ err = au_dr_hino_store(sb, br, hinofile);
+ fput(hinofile);
+ goto out;
+
+out_dput:
+ dput(hinopath.dentry);
+out_unlock:
+ if (suspend)
+ au_hn_inode_unlock(hdir);
+ else
+ inode_unlock(dir);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_dr_brid_init(struct au_dr_brid *brid, const struct path *path)
+{
+ int err;
+ struct kstatfs kstfs;
+ dev_t dev;
+ struct dentry *dentry;
+ struct super_block *sb;
+
+ err = vfs_statfs((void *)path, &kstfs);
+ AuTraceErr(err);
+ if (unlikely(err))
+ goto out;
+
+ /* todo: support for UUID */
+
+ if (kstfs.f_fsid.val[0] || kstfs.f_fsid.val[1]) {
+ brid->type = AuBrid_FSID;
+ brid->fsid = kstfs.f_fsid;
+ } else {
+ dentry = path->dentry;
+ sb = dentry->d_sb;
+ dev = sb->s_dev;
+ if (dev) {
+ brid->type = AuBrid_DEV;
+ brid->dev = dev;
+ }
+ }
+
+out:
+ return err;
+}
+
+int au_dr_br_init(struct super_block *sb, struct au_branch *br,
+ const struct path *path)
+{
+ int err, i;
+ struct au_dr_br *dr;
+ struct hlist_bl_head *hbl;
+
+ dr = &br->br_dirren;
+ hbl = dr->dr_h_ino;
+ for (i = 0; i < AuDirren_NHASH; i++, hbl++)
+ INIT_HLIST_BL_HEAD(hbl);
+
+ err = au_dr_brid_init(&dr->dr_brid, path);
+ if (unlikely(err))
+ goto out;
+
+ if (au_opt_test(au_mntflags(sb), DIRREN))
+ err = au_dr_hino(sb, /*bindex*/-1, br, path);
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+int au_dr_br_fin(struct super_block *sb, struct au_branch *br)
+{
+ int err;
+
+ err = 0;
+ if (au_br_writable(br->br_perm))
+ err = au_dr_hino(sb, /*bindex*/-1, br, /*path*/NULL);
+ if (!err)
+ au_dr_hino_free(&br->br_dirren);
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_brid_str(struct au_dr_brid *brid, struct inode *h_inode,
+ char *buf, size_t sz)
+{
+ int err;
+ unsigned int major, minor;
+ char *p;
+
+ p = buf;
+ err = snprintf(p, sz, "%d_", brid->type);
+ AuDebugOn(err > sz);
+ p += err;
+ sz -= err;
+ switch (brid->type) {
+ case AuBrid_Unset:
+ return -EINVAL;
+ case AuBrid_UUID:
+ err = snprintf(p, sz, "%pU", brid->uuid.b);
+ break;
+ case AuBrid_FSID:
+ err = snprintf(p, sz, "%08x-%08x",
+ brid->fsid.val[0], brid->fsid.val[1]);
+ break;
+ case AuBrid_DEV:
+ major = MAJOR(brid->dev);
+ minor = MINOR(brid->dev);
+ if (major <= 0xff && minor <= 0xff)
+ err = snprintf(p, sz, "%02x%02x", major, minor);
+ else
+ err = snprintf(p, sz, "%03x:%05x", major, minor);
+ break;
+ }
+ AuDebugOn(err > sz);
+ p += err;
+ sz -= err;
+ err = snprintf(p, sz, "_%llu", (unsigned long long)h_inode->i_ino);
+ AuDebugOn(err > sz);
+ p += err;
+ sz -= err;
+
+ return p - buf;
+}
+
+static int au_drinfo_name(struct au_branch *br, char *name, int len)
+{
+ int rlen;
+ struct dentry *br_dentry;
+ struct inode *br_inode;
+
+ br_dentry = au_br_dentry(br);
+ br_inode = d_inode(br_dentry);
+ rlen = au_brid_str(&br->br_dirren.dr_brid, br_inode, name, len);
+ AuDebugOn(rlen >= AUFS_DIRREN_ENV_VAL_SZ);
+ AuDebugOn(rlen > len);
+
+ return rlen;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * from the given @h_dentry, construct drinfo at @*fdata.
+ * when the size of @*fdata is not enough, reallocate and return new @fdata and
+ * @allocated.
+ */
+static int au_drinfo_construct(struct au_drinfo_fdata **fdata,
+ struct dentry *h_dentry,
+ unsigned char *allocated)
+{
+ int err, v;
+ struct au_drinfo_fdata *f, *p;
+ struct au_drinfo *drinfo;
+ struct inode *h_inode;
+ struct qstr *qname;
+
+ err = 0;
+ f = *fdata;
+ h_inode = d_inode(h_dentry);
+ qname = &h_dentry->d_name;
+ drinfo = &f->drinfo;
+ drinfo->ino = (__force uint64_t)cpu_to_be64(h_inode->i_ino);
+ drinfo->oldnamelen = qname->len;
+ if (*allocated < sizeof(*f) + qname->len) {
+ v = roundup_pow_of_two(*allocated + qname->len);
+ p = au_krealloc(f, v, GFP_NOFS, /*may_shrink*/0);
+ if (unlikely(!p)) {
+ err = -ENOMEM;
+ AuTraceErr(err);
+ goto out;
+ }
+ f = p;
+ *fdata = f;
+ *allocated = v;
+ drinfo = &f->drinfo;
+ }
+ memcpy(drinfo->oldname, qname->name, qname->len);
+ AuDbg("i%llu, %.*s\n",
+ be64_to_cpu((__force __be64)drinfo->ino), drinfo->oldnamelen,
+ drinfo->oldname);
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/* callers have to free the return value */
+static struct au_drinfo *au_drinfo_read_k(struct file *file, ino_t h_ino)
+{
+ struct au_drinfo *ret, *drinfo;
+ struct au_drinfo_fdata fdata;
+ int len;
+ loff_t pos;
+ ssize_t ssz;
+
+ ret = ERR_PTR(-EIO);
+ pos = 0;
+ ssz = vfsub_read_k(file, &fdata, sizeof(fdata), &pos);
+ if (unlikely(ssz != sizeof(fdata))) {
+ AuIOErr("ssz %zd, %u, %pD2\n",
+ ssz, (unsigned int)sizeof(fdata), file);
+ goto out;
+ }
+
+ fdata.magic = ntohl((__force __be32)fdata.magic);
+ switch (fdata.magic) {
+ case AUFS_DRINFO_MAGIC_V1:
+ break;
+ default:
+ AuIOErr("magic-num 0x%x, 0x%x, %pD2\n",
+ fdata.magic, AUFS_DRINFO_MAGIC_V1, file);
+ goto out;
+ }
+
+ drinfo = &fdata.drinfo;
+ len = drinfo->oldnamelen;
+ if (!len) {
+ AuIOErr("broken drinfo %pD2\n", file);
+ goto out;
+ }
+
+ ret = NULL;
+ drinfo->ino = be64_to_cpu((__force __be64)drinfo->ino);
+ if (unlikely(h_ino && drinfo->ino != h_ino)) {
+ AuDbg("ignored i%llu, i%llu, %pD2\n",
+ (unsigned long long)drinfo->ino,
+ (unsigned long long)h_ino, file);
+ goto out; /* success */
+ }
+
+ ret = kmalloc(sizeof(*ret) + len, GFP_NOFS);
+ if (unlikely(!ret)) {
+ ret = ERR_PTR(-ENOMEM);
+ AuTraceErrPtr(ret);
+ goto out;
+ }
+
+ *ret = *drinfo;
+ ssz = vfsub_read_k(file, (void *)ret->oldname, len, &pos);
+ if (unlikely(ssz != len)) {
+ au_kfree_rcu(ret);
+ ret = ERR_PTR(-EIO);
+ AuIOErr("ssz %zd, %u, %pD2\n", ssz, len, file);
+ goto out;
+ }
+
+ AuDbg("oldname %.*s\n", ret->oldnamelen, ret->oldname);
+
+out:
+ return ret;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* in order to be revertible */
+struct au_drinfo_rev_elm {
+ int created;
+ struct dentry *info_dentry;
+ struct au_drinfo *info_last;
+};
+
+struct au_drinfo_rev {
+ unsigned char already;
+ aufs_bindex_t nelm;
+ struct au_drinfo_rev_elm elm[0];
+};
+
+/* todo: isn't it too large? */
+struct au_drinfo_store {
+ struct path h_ppath;
+ struct dentry *h_dentry;
+ struct au_drinfo_fdata *fdata;
+ char *infoname; /* inside of whname, just after PFX */
+ char whname[sizeof(AUFS_WH_DR_INFO_PFX) + AUFS_DIRREN_ENV_VAL_SZ];
+ aufs_bindex_t btgt, btail;
+ unsigned char no_sio,
+ allocated, /* current size of *fdata */
+ infonamelen, /* room size for p */
+ whnamelen, /* length of the generated name */
+ renameback; /* renamed back */
+};
+
+/* on rename(2) error, the caller should revert it using @elm */
+static int au_drinfo_do_store(struct au_drinfo_store *w,
+ struct au_drinfo_rev_elm *elm)
+{
+ int err, len;
+ ssize_t ssz;
+ loff_t pos;
+ struct path infopath = {
+ .mnt = w->h_ppath.mnt
+ };
+ struct inode *h_dir, *h_inode, *delegated;
+ struct file *infofile;
+ struct qstr *qname;
+
+ AuDebugOn(elm
+ && memcmp(elm, page_address(ZERO_PAGE(0)), sizeof(*elm)));
+
+ infopath.dentry = vfsub_lookup_one_len(w->whname, w->h_ppath.dentry,
+ w->whnamelen);
+ AuTraceErrPtr(infopath.dentry);
+ if (IS_ERR(infopath.dentry)) {
+ err = PTR_ERR(infopath.dentry);
+ goto out;
+ }
+
+ err = 0;
+ h_dir = d_inode(w->h_ppath.dentry);
+ if (elm && d_is_negative(infopath.dentry)) {
+ err = vfsub_create(h_dir, &infopath, 0600, /*want_excl*/true);
+ AuTraceErr(err);
+ if (unlikely(err))
+ goto out_dput;
+ elm->created = 1;
+ elm->info_dentry = dget(infopath.dentry);
+ }
+
+ infofile = vfsub_dentry_open(&infopath, O_RDWR);
+ AuTraceErrPtr(infofile);
+ if (IS_ERR(infofile)) {
+ err = PTR_ERR(infofile);
+ goto out_dput;
+ }
+
+ h_inode = d_inode(infopath.dentry);
+ if (elm && i_size_read(h_inode)) {
+ h_inode = d_inode(w->h_dentry);
+ elm->info_last = au_drinfo_read_k(infofile, h_inode->i_ino);
+ AuTraceErrPtr(elm->info_last);
+ if (IS_ERR(elm->info_last)) {
+ err = PTR_ERR(elm->info_last);
+ elm->info_last = NULL;
+ AuDebugOn(elm->info_dentry);
+ goto out_fput;
+ }
+ }
+
+ if (elm && w->renameback) {
+ delegated = NULL;
+ err = vfsub_unlink(h_dir, &infopath, &delegated, /*force*/0);
+ AuTraceErr(err);
+ if (unlikely(err == -EWOULDBLOCK))
+ iput(delegated);
+ goto out_fput;
+ }
+
+ pos = 0;
+ qname = &w->h_dentry->d_name;
+ len = sizeof(*w->fdata) + qname->len;
+ if (!elm)
+ len = sizeof(*w->fdata) + w->fdata->drinfo.oldnamelen;
+ ssz = vfsub_write_k(infofile, w->fdata, len, &pos);
+ if (ssz == len) {
+ AuDbg("hi%llu, %.*s\n", w->fdata->drinfo.ino,
+ w->fdata->drinfo.oldnamelen, w->fdata->drinfo.oldname);
+ goto out_fput; /* success */
+ } else {
+ err = -EIO;
+ if (ssz < 0)
+ err = ssz;
+ /* the caller should revert it using @elm */
+ }
+
+out_fput:
+ fput(infofile);
+out_dput:
+ dput(infopath.dentry);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+struct au_call_drinfo_do_store_args {
+ int *errp;
+ struct au_drinfo_store *w;
+ struct au_drinfo_rev_elm *elm;
+};
+
+static void au_call_drinfo_do_store(void *args)
+{
+ struct au_call_drinfo_do_store_args *a = args;
+
+ *a->errp = au_drinfo_do_store(a->w, a->elm);
+}
+
+static int au_drinfo_store_sio(struct au_drinfo_store *w,
+ struct au_drinfo_rev_elm *elm)
+{
+ int err, wkq_err;
+
+ if (w->no_sio)
+ err = au_drinfo_do_store(w, elm);
+ else {
+ struct au_call_drinfo_do_store_args a = {
+ .errp = &err,
+ .w = w,
+ .elm = elm
+ };
+ wkq_err = au_wkq_wait(au_call_drinfo_do_store, &a);
+ if (unlikely(wkq_err))
+ err = wkq_err;
+ }
+ AuTraceErr(err);
+
+ return err;
+}
+
+static int au_drinfo_store_work_init(struct au_drinfo_store *w,
+ aufs_bindex_t btgt)
+{
+ int err;
+
+ memset(w, 0, sizeof(*w));
+ w->allocated = roundup_pow_of_two(sizeof(*w->fdata) + 40);
+ strcpy(w->whname, AUFS_WH_DR_INFO_PFX);
+ w->infoname = w->whname + sizeof(AUFS_WH_DR_INFO_PFX) - 1;
+ w->infonamelen = sizeof(w->whname) - sizeof(AUFS_WH_DR_INFO_PFX);
+ w->btgt = btgt;
+ w->no_sio = !!uid_eq(current_fsuid(), GLOBAL_ROOT_UID);
+
+ err = -ENOMEM;
+ w->fdata = kcalloc(1, w->allocated, GFP_NOFS);
+ if (unlikely(!w->fdata)) {
+ AuTraceErr(err);
+ goto out;
+ }
+ w->fdata->magic = (__force uint32_t)htonl(AUFS_DRINFO_MAGIC_V1);
+ err = 0;
+
+out:
+ return err;
+}
+
+static void au_drinfo_store_work_fin(struct au_drinfo_store *w)
+{
+ au_kfree_rcu(w->fdata);
+}
+
+static void au_drinfo_store_rev(struct au_drinfo_rev *rev,
+ struct au_drinfo_store *w)
+{
+ struct au_drinfo_rev_elm *elm;
+ struct inode *h_dir, *delegated;
+ int err, nelm;
+ struct path infopath = {
+ .mnt = w->h_ppath.mnt
+ };
+
+ h_dir = d_inode(w->h_ppath.dentry);
+ IMustLock(h_dir);
+
+ err = 0;
+ elm = rev->elm;
+ for (nelm = rev->nelm; nelm > 0; nelm--, elm++) {
+ AuDebugOn(elm->created && elm->info_last);
+ if (elm->created) {
+ AuDbg("here\n");
+ delegated = NULL;
+ infopath.dentry = elm->info_dentry;
+ err = vfsub_unlink(h_dir, &infopath, &delegated,
+ !w->no_sio);
+ AuTraceErr(err);
+ if (unlikely(err == -EWOULDBLOCK))
+ iput(delegated);
+ dput(elm->info_dentry);
+ } else if (elm->info_last) {
+ AuDbg("here\n");
+ w->fdata->drinfo = *elm->info_last;
+ memcpy(w->fdata->drinfo.oldname,
+ elm->info_last->oldname,
+ elm->info_last->oldnamelen);
+ err = au_drinfo_store_sio(w, /*elm*/NULL);
+ au_kfree_rcu(elm->info_last);
+ }
+ if (unlikely(err))
+ AuIOErr("%d, %s\n", err, w->whname);
+ /* go on even if err */
+ }
+}
+
+/* caller has to call au_dr_rename_fin() later */
+static int au_drinfo_store(struct dentry *dentry, aufs_bindex_t btgt,
+ struct qstr *dst_name, void *_rev)
+{
+ int err, sz, nelm;
+ aufs_bindex_t bindex, btail;
+ struct au_drinfo_store work;
+ struct au_drinfo_rev *rev, **p;
+ struct au_drinfo_rev_elm *elm;
+ struct super_block *sb;
+ struct au_branch *br;
+ struct au_hinode *hdir;
+
+ err = au_drinfo_store_work_init(&work, btgt);
+ AuTraceErr(err);
+ if (unlikely(err))
+ goto out;
+
+ err = -ENOMEM;
+ btail = au_dbtaildir(dentry);
+ nelm = btail - btgt;
+ sz = sizeof(*rev) + sizeof(*elm) * nelm;
+ rev = kcalloc(1, sz, GFP_NOFS);
+ if (unlikely(!rev)) {
+ AuTraceErr(err);
+ goto out_args;
+ }
+ rev->nelm = nelm;
+ elm = rev->elm;
+ p = _rev;
+ *p = rev;
+
+ err = 0;
+ sb = dentry->d_sb;
+ work.h_ppath.dentry = au_h_dptr(dentry, btgt);
+ work.h_ppath.mnt = au_sbr_mnt(sb, btgt);
+ hdir = au_hi(d_inode(dentry), btgt);
+ au_hn_inode_lock_nested(hdir, AuLsc_I_CHILD);
+ for (bindex = btgt + 1; bindex <= btail; bindex++, elm++) {
+ work.h_dentry = au_h_dptr(dentry, bindex);
+ if (!work.h_dentry)
+ continue;
+
+ err = au_drinfo_construct(&work.fdata, work.h_dentry,
+ &work.allocated);
+ AuTraceErr(err);
+ if (unlikely(err))
+ break;
+
+ work.renameback = au_qstreq(&work.h_dentry->d_name, dst_name);
+ br = au_sbr(sb, bindex);
+ work.whnamelen = sizeof(AUFS_WH_DR_INFO_PFX) - 1;
+ work.whnamelen += au_drinfo_name(br, work.infoname,
+ work.infonamelen);
+ AuDbg("whname %.*s, i%llu, %.*s\n",
+ work.whnamelen, work.whname,
+ be64_to_cpu((__force __be64)work.fdata->drinfo.ino),
+ work.fdata->drinfo.oldnamelen,
+ work.fdata->drinfo.oldname);
+
+ err = au_drinfo_store_sio(&work, elm);
+ AuTraceErr(err);
+ if (unlikely(err))
+ break;
+ }
+ if (unlikely(err)) {
+ /* revert all drinfo */
+ au_drinfo_store_rev(rev, &work);
+ au_kfree_try_rcu(rev);
+ *p = NULL;
+ }
+ au_hn_inode_unlock(hdir);
+
+out_args:
+ au_drinfo_store_work_fin(&work);
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_dr_rename(struct dentry *src, aufs_bindex_t bindex,
+ struct qstr *dst_name, void *_rev)
+{
+ int err, already;
+ ino_t ino;
+ struct super_block *sb;
+ struct au_branch *br;
+ struct au_dr_br *dr;
+ struct dentry *h_dentry;
+ struct inode *h_inode;
+ struct au_dr_hino *ent;
+ struct au_drinfo_rev *rev, **p;
+
+ AuDbg("bindex %d\n", bindex);
+
+ err = -ENOMEM;
+ ent = kmalloc(sizeof(*ent), GFP_NOFS);
+ if (unlikely(!ent))
+ goto out;
+
+ sb = src->d_sb;
+ br = au_sbr(sb, bindex);
+ dr = &br->br_dirren;
+ h_dentry = au_h_dptr(src, bindex);
+ h_inode = d_inode(h_dentry);
+ ino = h_inode->i_ino;
+ ent->dr_h_ino = ino;
+ already = au_dr_hino_test_add(dr, ino, ent);
+ AuDbg("b%d, hi%llu, already %d\n",
+ bindex, (unsigned long long)ino, already);
+
+ err = au_drinfo_store(src, bindex, dst_name, _rev);
+ AuTraceErr(err);
+ if (!err) {
+ p = _rev;
+ rev = *p;
+ rev->already = already;
+ goto out; /* success */
+ }
+
+ /* revert */
+ if (!already)
+ au_dr_hino_del(dr, ent);
+ au_kfree_rcu(ent);
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+void au_dr_rename_fin(struct dentry *src, aufs_bindex_t btgt, void *_rev)
+{
+ struct au_drinfo_rev *rev;
+ struct au_drinfo_rev_elm *elm;
+ int nelm;
+
+ rev = _rev;
+ elm = rev->elm;
+ for (nelm = rev->nelm; nelm > 0; nelm--, elm++) {
+ dput(elm->info_dentry);
+ au_kfree_rcu(elm->info_last);
+ }
+ au_kfree_try_rcu(rev);
+}
+
+void au_dr_rename_rev(struct dentry *src, aufs_bindex_t btgt, void *_rev)
+{
+ int err;
+ struct au_drinfo_store work;
+ struct au_drinfo_rev *rev = _rev;
+ struct super_block *sb;
+ struct au_branch *br;
+ struct inode *h_inode;
+ struct au_dr_br *dr;
+ struct au_dr_hino *ent;
+
+ err = au_drinfo_store_work_init(&work, btgt);
+ if (unlikely(err))
+ goto out;
+
+ sb = src->d_sb;
+ br = au_sbr(sb, btgt);
+ work.h_ppath.dentry = au_h_dptr(src, btgt);
+ work.h_ppath.mnt = au_br_mnt(br);
+ au_drinfo_store_rev(rev, &work);
+ au_drinfo_store_work_fin(&work);
+ if (rev->already)
+ goto out;
+
+ dr = &br->br_dirren;
+ h_inode = d_inode(work.h_ppath.dentry);
+ ent = au_dr_hino_find(dr, h_inode->i_ino);
+ BUG_ON(!ent);
+ au_dr_hino_del(dr, ent);
+ au_kfree_rcu(ent);
+
+out:
+ au_kfree_try_rcu(rev);
+ if (unlikely(err))
+ pr_err("failed to remove dirren info\n");
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct au_drinfo *au_drinfo_do_load(struct path *h_ppath,
+ char *whname, int whnamelen,
+ struct dentry **info_dentry)
+{
+ struct au_drinfo *drinfo;
+ struct file *f;
+ struct inode *h_dir;
+ struct path infopath;
+ int unlocked;
+
+ AuDbg("%pd/%.*s\n", h_ppath->dentry, whnamelen, whname);
+
+ *info_dentry = NULL;
+ drinfo = NULL;
+ unlocked = 0;
+ h_dir = d_inode(h_ppath->dentry);
+ inode_lock_shared_nested(h_dir, AuLsc_I_PARENT);
+ infopath.dentry = vfsub_lookup_one_len(whname, h_ppath->dentry,
+ whnamelen);
+ if (IS_ERR(infopath.dentry)) {
+ drinfo = (void *)infopath.dentry;
+ goto out;
+ }
+
+ if (d_is_negative(infopath.dentry))
+ goto out_dput; /* success */
+
+ infopath.mnt = h_ppath->mnt;
+ f = vfsub_dentry_open(&infopath, O_RDONLY);
+ inode_unlock_shared(h_dir);
+ unlocked = 1;
+ if (IS_ERR(f)) {
+ drinfo = (void *)f;
+ goto out_dput;
+ }
+
+ drinfo = au_drinfo_read_k(f, /*h_ino*/0);
+ if (IS_ERR_OR_NULL(drinfo))
+ goto out_fput;
+
+ AuDbg("oldname %.*s\n", drinfo->oldnamelen, drinfo->oldname);
+ *info_dentry = dget(infopath.dentry); /* keep it alive */
+
+out_fput:
+ fput(f);
+out_dput:
+ dput(infopath.dentry);
+out:
+ if (!unlocked)
+ inode_unlock_shared(h_dir);
+ AuTraceErrPtr(drinfo);
+ return drinfo;
+}
+
+struct au_drinfo_do_load_args {
+ struct au_drinfo **drinfop;
+ struct path *h_ppath;
+ char *whname;
+ int whnamelen;
+ struct dentry **info_dentry;
+};
+
+static void au_call_drinfo_do_load(void *args)
+{
+ struct au_drinfo_do_load_args *a = args;
+
+ *a->drinfop = au_drinfo_do_load(a->h_ppath, a->whname, a->whnamelen,
+ a->info_dentry);
+}
+
+struct au_drinfo_load {
+ struct path h_ppath;
+ struct qstr *qname;
+ unsigned char no_sio;
+
+ aufs_bindex_t ninfo;
+ struct au_drinfo **drinfo;
+};
+
+static int au_drinfo_load(struct au_drinfo_load *w, aufs_bindex_t bindex,
+ struct au_branch *br)
+{
+ int err, wkq_err, whnamelen, e;
+ char whname[sizeof(AUFS_WH_DR_INFO_PFX) + AUFS_DIRREN_ENV_VAL_SZ]
+ = AUFS_WH_DR_INFO_PFX;
+ struct au_drinfo *drinfo;
+ struct qstr oldname;
+ struct inode *h_dir, *delegated;
+ struct dentry *info_dentry;
+ struct path infopath;
+
+ whnamelen = sizeof(AUFS_WH_DR_INFO_PFX) - 1;
+ whnamelen += au_drinfo_name(br, whname + whnamelen,
+ sizeof(whname) - whnamelen);
+ if (w->no_sio)
+ drinfo = au_drinfo_do_load(&w->h_ppath, whname, whnamelen,
+ &info_dentry);
+ else {
+ struct au_drinfo_do_load_args args = {
+ .drinfop = &drinfo,
+ .h_ppath = &w->h_ppath,
+ .whname = whname,
+ .whnamelen = whnamelen,
+ .info_dentry = &info_dentry
+ };
+ wkq_err = au_wkq_wait(au_call_drinfo_do_load, &args);
+ if (unlikely(wkq_err))
+ drinfo = ERR_PTR(wkq_err);
+ }
+ err = PTR_ERR(drinfo);
+ if (IS_ERR_OR_NULL(drinfo))
+ goto out;
+
+ err = 0;
+ oldname.len = drinfo->oldnamelen;
+ oldname.name = drinfo->oldname;
+ if (au_qstreq(w->qname, &oldname)) {
+ /* the name is renamed back */
+ au_kfree_rcu(drinfo);
+ drinfo = NULL;
+
+ infopath.dentry = info_dentry;
+ infopath.mnt = w->h_ppath.mnt;
+ h_dir = d_inode(w->h_ppath.dentry);
+ delegated = NULL;
+ inode_lock_nested(h_dir, AuLsc_I_PARENT);
+ e = vfsub_unlink(h_dir, &infopath, &delegated, !w->no_sio);
+ inode_unlock(h_dir);
+ if (unlikely(e))
+ AuIOErr("ignored %d, %pd2\n", e, &infopath.dentry);
+ if (unlikely(e == -EWOULDBLOCK))
+ iput(delegated);
+ }
+ au_kfree_rcu(w->drinfo[bindex]);
+ w->drinfo[bindex] = drinfo;
+ dput(info_dentry);
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void au_dr_lkup_free(struct au_drinfo **drinfo, int n)
+{
+ struct au_drinfo **p = drinfo;
+
+ while (n-- > 0)
+ au_kfree_rcu(*drinfo++);
+ au_kfree_try_rcu(p);
+}
+
+int au_dr_lkup(struct au_do_lookup_args *lkup, struct dentry *dentry,
+ aufs_bindex_t btgt)
+{
+ int err, ninfo;
+ struct au_drinfo_load w;
+ aufs_bindex_t bindex, bbot;
+ struct au_branch *br;
+ struct inode *h_dir;
+ struct au_dr_hino *ent;
+ struct super_block *sb;
+
+ AuDbg("%.*s, name %.*s, whname %.*s, b%d\n",
+ AuLNPair(&dentry->d_name), AuLNPair(&lkup->dirren.dr_name),
+ AuLNPair(&lkup->whname), btgt);
+
+ sb = dentry->d_sb;
+ bbot = au_sbbot(sb);
+ w.ninfo = bbot + 1;
+ if (!lkup->dirren.drinfo) {
+ lkup->dirren.drinfo = kcalloc(w.ninfo,
+ sizeof(*lkup->dirren.drinfo),
+ GFP_NOFS);
+ if (unlikely(!lkup->dirren.drinfo)) {
+ err = -ENOMEM;
+ goto out;
+ }
+ lkup->dirren.ninfo = w.ninfo;
+ }
+ w.drinfo = lkup->dirren.drinfo;
+ w.no_sio = !!uid_eq(current_fsuid(), GLOBAL_ROOT_UID);
+ w.h_ppath.dentry = au_h_dptr(dentry, btgt);
+ AuDebugOn(!w.h_ppath.dentry);
+ w.h_ppath.mnt = au_sbr_mnt(sb, btgt);
+ w.qname = &dentry->d_name;
+
+ ninfo = 0;
+ for (bindex = btgt + 1; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ err = au_drinfo_load(&w, bindex, br);
+ if (unlikely(err))
+ goto out_free;
+ if (w.drinfo[bindex])
+ ninfo++;
+ }
+ if (!ninfo) {
+ br = au_sbr(sb, btgt);
+ h_dir = d_inode(w.h_ppath.dentry);
+ ent = au_dr_hino_find(&br->br_dirren, h_dir->i_ino);
+ AuDebugOn(!ent);
+ au_dr_hino_del(&br->br_dirren, ent);
+ au_kfree_rcu(ent);
+ }
+ goto out; /* success */
+
+out_free:
+ au_dr_lkup_free(lkup->dirren.drinfo, lkup->dirren.ninfo);
+ lkup->dirren.ninfo = 0;
+ lkup->dirren.drinfo = NULL;
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+void au_dr_lkup_fin(struct au_do_lookup_args *lkup)
+{
+ au_dr_lkup_free(lkup->dirren.drinfo, lkup->dirren.ninfo);
+}
+
+int au_dr_lkup_name(struct au_do_lookup_args *lkup, aufs_bindex_t btgt)
+{
+ int err;
+ struct au_drinfo *drinfo;
+
+ err = 0;
+ if (!lkup->dirren.drinfo)
+ goto out;
+ AuDebugOn(lkup->dirren.ninfo < btgt + 1);
+ drinfo = lkup->dirren.drinfo[btgt + 1];
+ if (!drinfo)
+ goto out;
+
+ au_kfree_try_rcu(lkup->whname.name);
+ lkup->whname.name = NULL;
+ lkup->dirren.dr_name.len = drinfo->oldnamelen;
+ lkup->dirren.dr_name.name = drinfo->oldname;
+ lkup->name = &lkup->dirren.dr_name;
+ err = au_wh_name_alloc(&lkup->whname, lkup->name);
+ if (!err)
+ AuDbg("name %.*s, whname %.*s, b%d\n",
+ AuLNPair(lkup->name), AuLNPair(&lkup->whname),
+ btgt);
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+int au_dr_lkup_h_ino(struct au_do_lookup_args *lkup, aufs_bindex_t bindex,
+ ino_t h_ino)
+{
+ int match;
+ struct au_drinfo *drinfo;
+
+ match = 1;
+ if (!lkup->dirren.drinfo)
+ goto out;
+ AuDebugOn(lkup->dirren.ninfo < bindex + 1);
+ drinfo = lkup->dirren.drinfo[bindex + 1];
+ if (!drinfo)
+ goto out;
+
+ match = (drinfo->ino == h_ino);
+ AuDbg("match %d\n", match);
+
+out:
+ return match;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_dr_opt_set(struct super_block *sb)
+{
+ int err;
+ aufs_bindex_t bindex, bbot;
+ struct au_branch *br;
+
+ err = 0;
+ bbot = au_sbbot(sb);
+ for (bindex = 0; !err && bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ err = au_dr_hino(sb, bindex, /*br*/NULL, &br->br_path);
+ }
+
+ return err;
+}
+
+int au_dr_opt_flush(struct super_block *sb)
+{
+ int err;
+ aufs_bindex_t bindex, bbot;
+ struct au_branch *br;
+
+ err = 0;
+ bbot = au_sbbot(sb);
+ for (bindex = 0; !err && bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ if (au_br_writable(br->br_perm))
+ err = au_dr_hino(sb, bindex, /*br*/NULL, /*path*/NULL);
+ }
+
+ return err;
+}
+
+int au_dr_opt_clr(struct super_block *sb, int no_flush)
+{
+ int err;
+ aufs_bindex_t bindex, bbot;
+ struct au_branch *br;
+
+ err = 0;
+ if (!no_flush) {
+ err = au_dr_opt_flush(sb);
+ if (unlikely(err))
+ goto out;
+ }
+
+ bbot = au_sbbot(sb);
+ for (bindex = 0; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ au_dr_hino_free(&br->br_dirren);
+ }
+
+out:
+ return err;
+}
diff --git a/fs/aufs/dirren.h b/fs/aufs/dirren.h
new file mode 100644
index 0000000000..a986736462
--- /dev/null
+++ b/fs/aufs/dirren.h
@@ -0,0 +1,140 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2017-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * renamed dir info
+ */
+
+#ifndef __AUFS_DIRREN_H__
+#define __AUFS_DIRREN_H__
+
+#ifdef __KERNEL__
+
+#include <linux/dcache.h>
+#include <linux/statfs.h>
+#include <linux/uuid.h>
+#include "hbl.h"
+
+#define AuDirren_NHASH 100
+
+#ifdef CONFIG_AUFS_DIRREN
+enum au_brid_type {
+ AuBrid_Unset,
+ AuBrid_UUID,
+ AuBrid_FSID,
+ AuBrid_DEV
+};
+
+struct au_dr_brid {
+ enum au_brid_type type;
+ union {
+ uuid_t uuid; /* unimplemented yet */
+ fsid_t fsid;
+ dev_t dev;
+ };
+};
+
+/* 20 is the max digits length of ulong 64 */
+/* brid-type "_" uuid "_" inum */
+#define AUFS_DIRREN_FNAME_SZ (1 + 1 + UUID_STRING_LEN + 20)
+#define AUFS_DIRREN_ENV_VAL_SZ (AUFS_DIRREN_FNAME_SZ + 1 + 20)
+
+struct au_dr_hino {
+ struct hlist_bl_node dr_hnode;
+ ino_t dr_h_ino;
+};
+
+struct au_dr_br {
+ struct hlist_bl_head dr_h_ino[AuDirren_NHASH];
+ struct au_dr_brid dr_brid;
+};
+
+struct au_dr_lookup {
+ /* dr_name is pointed by struct au_do_lookup_args.name */
+ struct qstr dr_name; /* subset of dr_info */
+ aufs_bindex_t ninfo;
+ struct au_drinfo **drinfo;
+};
+#else
+struct au_dr_hino;
+/* empty */
+struct au_dr_br { };
+struct au_dr_lookup { };
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+struct au_branch;
+struct au_do_lookup_args;
+struct au_hinode;
+#ifdef CONFIG_AUFS_DIRREN
+int au_dr_hino_test_add(struct au_dr_br *dr, ino_t h_ino,
+ struct au_dr_hino *add_ent);
+void au_dr_hino_free(struct au_dr_br *dr);
+int au_dr_br_init(struct super_block *sb, struct au_branch *br,
+ const struct path *path);
+int au_dr_br_fin(struct super_block *sb, struct au_branch *br);
+int au_dr_rename(struct dentry *src, aufs_bindex_t bindex,
+ struct qstr *dst_name, void *_rev);
+void au_dr_rename_fin(struct dentry *src, aufs_bindex_t btgt, void *rev);
+void au_dr_rename_rev(struct dentry *src, aufs_bindex_t bindex, void *rev);
+int au_dr_lkup(struct au_do_lookup_args *lkup, struct dentry *dentry,
+ aufs_bindex_t bindex);
+int au_dr_lkup_name(struct au_do_lookup_args *lkup, aufs_bindex_t btgt);
+int au_dr_lkup_h_ino(struct au_do_lookup_args *lkup, aufs_bindex_t bindex,
+ ino_t h_ino);
+void au_dr_lkup_fin(struct au_do_lookup_args *lkup);
+int au_dr_opt_set(struct super_block *sb);
+int au_dr_opt_flush(struct super_block *sb);
+int au_dr_opt_clr(struct super_block *sb, int no_flush);
+#else
+AuStubInt0(au_dr_hino_test_add, struct au_dr_br *dr, ino_t h_ino,
+ struct au_dr_hino *add_ent);
+AuStubVoid(au_dr_hino_free, struct au_dr_br *dr);
+AuStubInt0(au_dr_br_init, struct super_block *sb, struct au_branch *br,
+ const struct path *path);
+AuStubInt0(au_dr_br_fin, struct super_block *sb, struct au_branch *br);
+AuStubInt0(au_dr_rename, struct dentry *src, aufs_bindex_t bindex,
+ struct qstr *dst_name, void *_rev);
+AuStubVoid(au_dr_rename_fin, struct dentry *src, aufs_bindex_t btgt, void *rev);
+AuStubVoid(au_dr_rename_rev, struct dentry *src, aufs_bindex_t bindex,
+ void *rev);
+AuStubInt0(au_dr_lkup, struct au_do_lookup_args *lkup, struct dentry *dentry,
+ aufs_bindex_t bindex);
+AuStubInt0(au_dr_lkup_name, struct au_do_lookup_args *lkup, aufs_bindex_t btgt);
+AuStubInt0(au_dr_lkup_h_ino, struct au_do_lookup_args *lkup,
+ aufs_bindex_t bindex, ino_t h_ino);
+AuStubVoid(au_dr_lkup_fin, struct au_do_lookup_args *lkup);
+AuStubInt0(au_dr_opt_set, struct super_block *sb);
+AuStubInt0(au_dr_opt_flush, struct super_block *sb);
+AuStubInt0(au_dr_opt_clr, struct super_block *sb, int no_flush);
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_DIRREN
+static inline int au_dr_ihash(ino_t h_ino)
+{
+ return h_ino % AuDirren_NHASH;
+}
+#else
+AuStubInt0(au_dr_ihash, ino_t h_ino);
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_DIRREN_H__ */
diff --git a/fs/aufs/dynop.c b/fs/aufs/dynop.c
new file mode 100644
index 0000000000..ed79f8255a
--- /dev/null
+++ b/fs/aufs/dynop.c
@@ -0,0 +1,367 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2010-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * dynamically customizable operations for regular files
+ */
+
+#include "aufs.h"
+
+#define DyPrSym(key) AuDbgSym(key->dk_op.dy_hop)
+
+/*
+ * How large will these lists be?
+ * Usually just a few elements, 20-30 at most for each, I guess.
+ */
+static struct hlist_bl_head dynop[AuDyLast];
+
+static struct au_dykey *dy_gfind_get(struct hlist_bl_head *hbl,
+ const void *h_op)
+{
+ struct au_dykey *key, *tmp;
+ struct hlist_bl_node *pos;
+
+ key = NULL;
+ hlist_bl_lock(hbl);
+ hlist_bl_for_each_entry(tmp, pos, hbl, dk_hnode)
+ if (tmp->dk_op.dy_hop == h_op) {
+ if (kref_get_unless_zero(&tmp->dk_kref))
+ key = tmp;
+ break;
+ }
+ hlist_bl_unlock(hbl);
+
+ return key;
+}
+
+static struct au_dykey *dy_bradd(struct au_branch *br, struct au_dykey *key)
+{
+ struct au_dykey **k, *found;
+ const void *h_op = key->dk_op.dy_hop;
+ int i;
+
+ found = NULL;
+ k = br->br_dykey;
+ for (i = 0; i < AuBrDynOp; i++)
+ if (k[i]) {
+ if (k[i]->dk_op.dy_hop == h_op) {
+ found = k[i];
+ break;
+ }
+ } else
+ break;
+ if (!found) {
+ spin_lock(&br->br_dykey_lock);
+ for (; i < AuBrDynOp; i++)
+ if (k[i]) {
+ if (k[i]->dk_op.dy_hop == h_op) {
+ found = k[i];
+ break;
+ }
+ } else {
+ k[i] = key;
+ break;
+ }
+ spin_unlock(&br->br_dykey_lock);
+ BUG_ON(i == AuBrDynOp); /* expand the array */
+ }
+
+ return found;
+}
+
+/* kref_get() if @key is already added */
+static struct au_dykey *dy_gadd(struct hlist_bl_head *hbl, struct au_dykey *key)
+{
+ struct au_dykey *tmp, *found;
+ struct hlist_bl_node *pos;
+ const void *h_op = key->dk_op.dy_hop;
+
+ found = NULL;
+ hlist_bl_lock(hbl);
+ hlist_bl_for_each_entry(tmp, pos, hbl, dk_hnode)
+ if (tmp->dk_op.dy_hop == h_op) {
+ if (kref_get_unless_zero(&tmp->dk_kref))
+ found = tmp;
+ break;
+ }
+ if (!found)
+ hlist_bl_add_head(&key->dk_hnode, hbl);
+ hlist_bl_unlock(hbl);
+
+ if (!found)
+ DyPrSym(key);
+ return found;
+}
+
+static void dy_free_rcu(struct rcu_head *rcu)
+{
+ struct au_dykey *key;
+
+ key = container_of(rcu, struct au_dykey, dk_rcu);
+ DyPrSym(key);
+ kfree(key);
+}
+
+static void dy_free(struct kref *kref)
+{
+ struct au_dykey *key;
+ struct hlist_bl_head *hbl;
+
+ key = container_of(kref, struct au_dykey, dk_kref);
+ hbl = dynop + key->dk_op.dy_type;
+ au_hbl_del(&key->dk_hnode, hbl);
+ call_rcu(&key->dk_rcu, dy_free_rcu);
+}
+
+void au_dy_put(struct au_dykey *key)
+{
+ kref_put(&key->dk_kref, dy_free);
+}
+
+/* ---------------------------------------------------------------------- */
+
+#define DyDbgSize(cnt, op) AuDebugOn(cnt != sizeof(op)/sizeof(void *))
+
+#ifdef CONFIG_AUFS_DEBUG
+#define DyDbgDeclare(cnt) unsigned int cnt = 0
+#define DyDbgInc(cnt) do { cnt++; } while (0)
+#else
+#define DyDbgDeclare(cnt) do {} while (0)
+#define DyDbgInc(cnt) do {} while (0)
+#endif
+
+#define DySet(func, dst, src, h_op, h_sb) do { \
+ DyDbgInc(cnt); \
+ if (h_op->func) { \
+ if (src.func) \
+ dst.func = src.func; \
+ else \
+ AuDbg("%s %s\n", au_sbtype(h_sb), #func); \
+ } \
+} while (0)
+
+#define DySetForce(func, dst, src) do { \
+ AuDebugOn(!src.func); \
+ DyDbgInc(cnt); \
+ dst.func = src.func; \
+} while (0)
+
+#define DySetAop(func) \
+ DySet(func, dyaop->da_op, aufs_aop, h_aop, h_sb)
+#define DySetAopForce(func) \
+ DySetForce(func, dyaop->da_op, aufs_aop)
+
+static void dy_aop(struct au_dykey *key, const void *h_op,
+ struct super_block *h_sb __maybe_unused)
+{
+ struct au_dyaop *dyaop = (void *)key;
+ const struct address_space_operations *h_aop = h_op;
+ DyDbgDeclare(cnt);
+
+ AuDbg("%s\n", au_sbtype(h_sb));
+
+ DySetAop(writepage);
+ DySetAopForce(readpage); /* force */
+ DySetAop(writepages);
+ DySetAop(set_page_dirty);
+ DySetAop(readpages);
+ DySetAop(write_begin);
+ DySetAop(write_end);
+ DySetAop(bmap);
+ DySetAop(invalidatepage);
+ DySetAop(releasepage);
+ DySetAop(freepage);
+ /* this one will be changed according to an aufs mount option */
+ DySetAop(direct_IO);
+ DySetAop(migratepage);
+ DySetAop(isolate_page);
+ DySetAop(putback_page);
+ DySetAop(launder_page);
+ DySetAop(is_partially_uptodate);
+ DySetAop(is_dirty_writeback);
+ DySetAop(error_remove_page);
+ DySetAop(swap_activate);
+ DySetAop(swap_deactivate);
+
+ DyDbgSize(cnt, *h_aop);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void dy_bug(struct kref *kref)
+{
+ BUG();
+}
+
+static struct au_dykey *dy_get(struct au_dynop *op, struct au_branch *br)
+{
+ struct au_dykey *key, *old;
+ struct hlist_bl_head *hbl;
+ struct op {
+ unsigned int sz;
+ void (*set)(struct au_dykey *key, const void *h_op,
+ struct super_block *h_sb __maybe_unused);
+ };
+ static const struct op a[] = {
+ [AuDy_AOP] = {
+ .sz = sizeof(struct au_dyaop),
+ .set = dy_aop
+ }
+ };
+ const struct op *p;
+
+ hbl = dynop + op->dy_type;
+ key = dy_gfind_get(hbl, op->dy_hop);
+ if (key)
+ goto out_add; /* success */
+
+ p = a + op->dy_type;
+ key = kzalloc(p->sz, GFP_NOFS);
+ if (unlikely(!key)) {
+ key = ERR_PTR(-ENOMEM);
+ goto out;
+ }
+
+ key->dk_op.dy_hop = op->dy_hop;
+ kref_init(&key->dk_kref);
+ p->set(key, op->dy_hop, au_br_sb(br));
+ old = dy_gadd(hbl, key);
+ if (old) {
+ au_kfree_rcu(key);
+ key = old;
+ }
+
+out_add:
+ old = dy_bradd(br, key);
+ if (old)
+ /* its ref-count should never be zero here */
+ kref_put(&key->dk_kref, dy_bug);
+out:
+ return key;
+}
+
+/* ---------------------------------------------------------------------- */
+/*
+ * Aufs prohibits O_DIRECT by default even if the branch supports it.
+ * This behaviour is necessary to return an error from open(O_DIRECT) instead
+ * of the succeeding I/O. The dio mount option enables O_DIRECT and makes
+ * open(O_DIRECT) always succeed, but the succeeding I/O may return an error.
+ * See the aufs manual in detail.
+ */
+static void dy_adx(struct au_dyaop *dyaop, int do_dx)
+{
+ if (!do_dx)
+ dyaop->da_op.direct_IO = NULL;
+ else
+ dyaop->da_op.direct_IO = aufs_aop.direct_IO;
+}
+
+static struct au_dyaop *dy_aget(struct au_branch *br,
+ const struct address_space_operations *h_aop,
+ int do_dx)
+{
+ struct au_dyaop *dyaop;
+ struct au_dynop op;
+
+ op.dy_type = AuDy_AOP;
+ op.dy_haop = h_aop;
+ dyaop = (void *)dy_get(&op, br);
+ if (IS_ERR(dyaop))
+ goto out;
+ dy_adx(dyaop, do_dx);
+
+out:
+ return dyaop;
+}
+
+int au_dy_iaop(struct inode *inode, aufs_bindex_t bindex,
+ struct inode *h_inode)
+{
+ int err, do_dx;
+ struct super_block *sb;
+ struct au_branch *br;
+ struct au_dyaop *dyaop;
+
+ AuDebugOn(!S_ISREG(h_inode->i_mode));
+ IiMustWriteLock(inode);
+
+ sb = inode->i_sb;
+ br = au_sbr(sb, bindex);
+ do_dx = !!au_opt_test(au_mntflags(sb), DIO);
+ dyaop = dy_aget(br, h_inode->i_mapping->a_ops, do_dx);
+ err = PTR_ERR(dyaop);
+ if (IS_ERR(dyaop))
+ /* unnecessary to call dy_fput() */
+ goto out;
+
+ err = 0;
+ inode->i_mapping->a_ops = &dyaop->da_op;
+
+out:
+ return err;
+}
+
+/*
+ * Is it safe to replace a_ops during the inode/file is in operation?
+ * Yes, I hope so.
+ */
+int au_dy_irefresh(struct inode *inode)
+{
+ int err;
+ aufs_bindex_t btop;
+ struct inode *h_inode;
+
+ err = 0;
+ if (S_ISREG(inode->i_mode)) {
+ btop = au_ibtop(inode);
+ h_inode = au_h_iptr(inode, btop);
+ err = au_dy_iaop(inode, btop, h_inode);
+ }
+ return err;
+}
+
+void au_dy_arefresh(int do_dx)
+{
+ struct hlist_bl_head *hbl;
+ struct hlist_bl_node *pos;
+ struct au_dykey *key;
+
+ hbl = dynop + AuDy_AOP;
+ hlist_bl_lock(hbl);
+ hlist_bl_for_each_entry(key, pos, hbl, dk_hnode)
+ dy_adx((void *)key, do_dx);
+ hlist_bl_unlock(hbl);
+}
+
+/* ---------------------------------------------------------------------- */
+
+void __init au_dy_init(void)
+{
+ int i;
+
+ for (i = 0; i < AuDyLast; i++)
+ INIT_HLIST_BL_HEAD(dynop + i);
+}
+
+void au_dy_fin(void)
+{
+ int i;
+
+ for (i = 0; i < AuDyLast; i++)
+ WARN_ON(!hlist_bl_empty(dynop + i));
+}
diff --git a/fs/aufs/dynop.h b/fs/aufs/dynop.h
new file mode 100644
index 0000000000..5d0b365594
--- /dev/null
+++ b/fs/aufs/dynop.h
@@ -0,0 +1,77 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2010-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * dynamically customizable operations (for regular files only)
+ */
+
+#ifndef __AUFS_DYNOP_H__
+#define __AUFS_DYNOP_H__
+
+#ifdef __KERNEL__
+
+#include <linux/fs.h>
+#include <linux/kref.h>
+
+enum {AuDy_AOP, AuDyLast};
+
+struct au_dynop {
+ int dy_type;
+ union {
+ const void *dy_hop;
+ const struct address_space_operations *dy_haop;
+ };
+};
+
+struct au_dykey {
+ union {
+ struct hlist_bl_node dk_hnode;
+ struct rcu_head dk_rcu;
+ };
+ struct au_dynop dk_op;
+
+ /*
+ * during I am in the branch local array, kref is gotten. when the
+ * branch is removed, kref is put.
+ */
+ struct kref dk_kref;
+};
+
+/* stop unioning since their sizes are very different from each other */
+struct au_dyaop {
+ struct au_dykey da_key;
+ struct address_space_operations da_op; /* not const */
+};
+/* make sure that 'struct au_dykey *' can be any type */
+static_assert(!offsetof(struct au_dyaop, da_key));
+
+/* ---------------------------------------------------------------------- */
+
+/* dynop.c */
+struct au_branch;
+void au_dy_put(struct au_dykey *key);
+int au_dy_iaop(struct inode *inode, aufs_bindex_t bindex,
+ struct inode *h_inode);
+int au_dy_irefresh(struct inode *inode);
+void au_dy_arefresh(int do_dio);
+
+void __init au_dy_init(void);
+void au_dy_fin(void);
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_DYNOP_H__ */
diff --git a/fs/aufs/export.c b/fs/aufs/export.c
new file mode 100644
index 0000000000..1da2ca0a96
--- /dev/null
+++ b/fs/aufs/export.c
@@ -0,0 +1,838 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * export via nfs
+ */
+
+#include <linux/exportfs.h>
+#include <linux/fs_struct.h>
+#include <linux/namei.h>
+#include <linux/nsproxy.h>
+#include <linux/random.h>
+#include <linux/writeback.h>
+#include "aufs.h"
+
+union conv {
+#ifdef CONFIG_AUFS_INO_T_64
+ __u32 a[2];
+#else
+ __u32 a[1];
+#endif
+ ino_t ino;
+};
+
+static ino_t decode_ino(__u32 *a)
+{
+ union conv u;
+
+ BUILD_BUG_ON(sizeof(u.ino) != sizeof(u.a));
+ u.a[0] = a[0];
+#ifdef CONFIG_AUFS_INO_T_64
+ u.a[1] = a[1];
+#endif
+ return u.ino;
+}
+
+static void encode_ino(__u32 *a, ino_t ino)
+{
+ union conv u;
+
+ u.ino = ino;
+ a[0] = u.a[0];
+#ifdef CONFIG_AUFS_INO_T_64
+ a[1] = u.a[1];
+#endif
+}
+
+/* NFS file handle */
+enum {
+ Fh_br_id,
+ Fh_sigen,
+#ifdef CONFIG_AUFS_INO_T_64
+ /* support 64bit inode number */
+ Fh_ino1,
+ Fh_ino2,
+ Fh_dir_ino1,
+ Fh_dir_ino2,
+#else
+ Fh_ino1,
+ Fh_dir_ino1,
+#endif
+ Fh_igen,
+ Fh_h_type,
+ Fh_tail,
+
+ Fh_ino = Fh_ino1,
+ Fh_dir_ino = Fh_dir_ino1
+};
+
+static int au_test_anon(struct dentry *dentry)
+{
+ /* note: read d_flags without d_lock */
+ return !!(dentry->d_flags & DCACHE_DISCONNECTED);
+}
+
+int au_test_nfsd(void)
+{
+ int ret;
+ struct task_struct *tsk = current;
+ char comm[sizeof(tsk->comm)];
+
+ ret = 0;
+ if (tsk->flags & PF_KTHREAD) {
+ get_task_comm(comm, tsk);
+ ret = !strcmp(comm, "nfsd");
+ }
+
+ return ret;
+}
+
+/* ---------------------------------------------------------------------- */
+/* inode generation external table */
+
+void au_xigen_inc(struct inode *inode)
+{
+ loff_t pos;
+ ssize_t sz;
+ __u32 igen;
+ struct super_block *sb;
+ struct au_sbinfo *sbinfo;
+
+ sb = inode->i_sb;
+ AuDebugOn(!au_opt_test(au_mntflags(sb), XINO));
+
+ sbinfo = au_sbi(sb);
+ pos = inode->i_ino;
+ pos *= sizeof(igen);
+ igen = inode->i_generation + 1;
+ sz = xino_fwrite(sbinfo->si_xwrite, sbinfo->si_xigen, &igen,
+ sizeof(igen), &pos);
+ if (sz == sizeof(igen))
+ return; /* success */
+
+ if (unlikely(sz >= 0))
+ AuIOErr("xigen error (%zd)\n", sz);
+}
+
+int au_xigen_new(struct inode *inode)
+{
+ int err;
+ loff_t pos;
+ ssize_t sz;
+ struct super_block *sb;
+ struct au_sbinfo *sbinfo;
+ struct file *file;
+
+ err = 0;
+ /* todo: dirty, at mount time */
+ if (inode->i_ino == AUFS_ROOT_INO)
+ goto out;
+ sb = inode->i_sb;
+ SiMustAnyLock(sb);
+ if (unlikely(!au_opt_test(au_mntflags(sb), XINO)))
+ goto out;
+
+ err = -EFBIG;
+ pos = inode->i_ino;
+ if (unlikely(au_loff_max / sizeof(inode->i_generation) - 1 < pos)) {
+ AuIOErr1("too large i%lld\n", pos);
+ goto out;
+ }
+ pos *= sizeof(inode->i_generation);
+
+ err = 0;
+ sbinfo = au_sbi(sb);
+ file = sbinfo->si_xigen;
+ BUG_ON(!file);
+
+ if (vfsub_f_size_read(file)
+ < pos + sizeof(inode->i_generation)) {
+ inode->i_generation = atomic_inc_return(&sbinfo->si_xigen_next);
+ sz = xino_fwrite(sbinfo->si_xwrite, file, &inode->i_generation,
+ sizeof(inode->i_generation), &pos);
+ } else
+ sz = xino_fread(sbinfo->si_xread, file, &inode->i_generation,
+ sizeof(inode->i_generation), &pos);
+ if (sz == sizeof(inode->i_generation))
+ goto out; /* success */
+
+ err = sz;
+ if (unlikely(sz >= 0)) {
+ err = -EIO;
+ AuIOErr("xigen error (%zd)\n", sz);
+ }
+
+out:
+ return err;
+}
+
+int au_xigen_set(struct super_block *sb, struct path *path)
+{
+ int err;
+ struct au_sbinfo *sbinfo;
+ struct file *file;
+
+ SiMustWriteLock(sb);
+
+ sbinfo = au_sbi(sb);
+ file = au_xino_create2(sb, path, sbinfo->si_xigen);
+ err = PTR_ERR(file);
+ if (IS_ERR(file))
+ goto out;
+ err = 0;
+ if (sbinfo->si_xigen)
+ fput(sbinfo->si_xigen);
+ sbinfo->si_xigen = file;
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+void au_xigen_clr(struct super_block *sb)
+{
+ struct au_sbinfo *sbinfo;
+
+ SiMustWriteLock(sb);
+
+ sbinfo = au_sbi(sb);
+ if (sbinfo->si_xigen) {
+ fput(sbinfo->si_xigen);
+ sbinfo->si_xigen = NULL;
+ }
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct dentry *decode_by_ino(struct super_block *sb, ino_t ino,
+ ino_t dir_ino)
+{
+ struct dentry *dentry, *d;
+ struct inode *inode;
+ unsigned int sigen;
+
+ dentry = NULL;
+ inode = ilookup(sb, ino);
+ if (!inode)
+ goto out;
+
+ dentry = ERR_PTR(-ESTALE);
+ sigen = au_sigen(sb);
+ if (unlikely(au_is_bad_inode(inode)
+ || IS_DEADDIR(inode)
+ || sigen != au_iigen(inode, NULL)))
+ goto out_iput;
+
+ dentry = NULL;
+ if (!dir_ino || S_ISDIR(inode->i_mode))
+ dentry = d_find_alias(inode);
+ else {
+ spin_lock(&inode->i_lock);
+ hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias) {
+ spin_lock(&d->d_lock);
+ if (!au_test_anon(d)
+ && d_inode(d->d_parent)->i_ino == dir_ino) {
+ dentry = dget_dlock(d);
+ spin_unlock(&d->d_lock);
+ break;
+ }
+ spin_unlock(&d->d_lock);
+ }
+ spin_unlock(&inode->i_lock);
+ }
+ if (unlikely(dentry && au_digen_test(dentry, sigen))) {
+ /* need to refresh */
+ dput(dentry);
+ dentry = NULL;
+ }
+
+out_iput:
+ iput(inode);
+out:
+ AuTraceErrPtr(dentry);
+ return dentry;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* todo: dirty? */
+/* if exportfs_decode_fh() passed vfsmount*, we could be happy */
+
+struct au_compare_mnt_args {
+ /* input */
+ struct super_block *sb;
+
+ /* output */
+ struct vfsmount *mnt;
+};
+
+static int au_compare_mnt(struct vfsmount *mnt, void *arg)
+{
+ struct au_compare_mnt_args *a = arg;
+
+ if (mnt->mnt_sb != a->sb)
+ return 0;
+ a->mnt = mntget(mnt);
+ return 1;
+}
+
+static struct vfsmount *au_mnt_get(struct super_block *sb)
+{
+ int err;
+ struct path root;
+ struct au_compare_mnt_args args = {
+ .sb = sb
+ };
+
+ get_fs_root(current->fs, &root);
+ rcu_read_lock();
+ err = iterate_mounts(au_compare_mnt, &args, root.mnt);
+ rcu_read_unlock();
+ path_put(&root);
+ AuDebugOn(!err);
+ AuDebugOn(!args.mnt);
+ return args.mnt;
+}
+
+struct au_nfsd_si_lock {
+ unsigned int sigen;
+ aufs_bindex_t bindex, br_id;
+ unsigned char force_lock;
+};
+
+static int si_nfsd_read_lock(struct super_block *sb,
+ struct au_nfsd_si_lock *nsi_lock)
+{
+ int err;
+ aufs_bindex_t bindex;
+
+ si_read_lock(sb, AuLock_FLUSH);
+
+ /* branch id may be wrapped around */
+ err = 0;
+ bindex = au_br_index(sb, nsi_lock->br_id);
+ if (bindex >= 0 && nsi_lock->sigen + AUFS_BRANCH_MAX > au_sigen(sb))
+ goto out; /* success */
+
+ err = -ESTALE;
+ bindex = -1;
+ if (!nsi_lock->force_lock)
+ si_read_unlock(sb);
+
+out:
+ nsi_lock->bindex = bindex;
+ return err;
+}
+
+struct find_name_by_ino {
+ struct dir_context ctx;
+ int called, found;
+ ino_t ino;
+ char *name;
+ int namelen;
+};
+
+static int
+find_name_by_ino(struct dir_context *ctx, const char *name, int namelen,
+ loff_t offset, u64 ino, unsigned int d_type)
+{
+ struct find_name_by_ino *a = container_of(ctx, struct find_name_by_ino,
+ ctx);
+
+ a->called++;
+ if (a->ino != ino)
+ return 0;
+
+ memcpy(a->name, name, namelen);
+ a->namelen = namelen;
+ a->found = 1;
+ return 1;
+}
+
+static struct dentry *au_lkup_by_ino(struct path *path, ino_t ino,
+ struct au_nfsd_si_lock *nsi_lock)
+{
+ struct dentry *dentry, *parent;
+ struct file *file;
+ struct inode *dir;
+ struct find_name_by_ino arg = {
+ .ctx = {
+ .actor = find_name_by_ino
+ }
+ };
+ int err;
+
+ parent = path->dentry;
+ if (nsi_lock)
+ si_read_unlock(parent->d_sb);
+ file = vfsub_dentry_open(path, au_dir_roflags);
+ dentry = (void *)file;
+ if (IS_ERR(file))
+ goto out;
+
+ dentry = ERR_PTR(-ENOMEM);
+ arg.name = (void *)__get_free_page(GFP_NOFS);
+ if (unlikely(!arg.name))
+ goto out_file;
+ arg.ino = ino;
+ arg.found = 0;
+ do {
+ arg.called = 0;
+ /* smp_mb(); */
+ err = vfsub_iterate_dir(file, &arg.ctx);
+ } while (!err && !arg.found && arg.called);
+ dentry = ERR_PTR(err);
+ if (unlikely(err))
+ goto out_name;
+ /* instead of ENOENT */
+ dentry = ERR_PTR(-ESTALE);
+ if (!arg.found)
+ goto out_name;
+
+ /* do not call vfsub_lkup_one() */
+ dir = d_inode(parent);
+ dentry = vfsub_lookup_one_len_unlocked(arg.name, parent, arg.namelen);
+ AuTraceErrPtr(dentry);
+ if (IS_ERR(dentry))
+ goto out_name;
+ AuDebugOn(au_test_anon(dentry));
+ if (unlikely(d_really_is_negative(dentry))) {
+ dput(dentry);
+ dentry = ERR_PTR(-ENOENT);
+ }
+
+out_name:
+ free_page((unsigned long)arg.name);
+out_file:
+ fput(file);
+out:
+ if (unlikely(nsi_lock
+ && si_nfsd_read_lock(parent->d_sb, nsi_lock) < 0))
+ if (!IS_ERR(dentry)) {
+ dput(dentry);
+ dentry = ERR_PTR(-ESTALE);
+ }
+ AuTraceErrPtr(dentry);
+ return dentry;
+}
+
+static struct dentry *decode_by_dir_ino(struct super_block *sb, ino_t ino,
+ ino_t dir_ino,
+ struct au_nfsd_si_lock *nsi_lock)
+{
+ struct dentry *dentry;
+ struct path path;
+
+ if (dir_ino != AUFS_ROOT_INO) {
+ path.dentry = decode_by_ino(sb, dir_ino, 0);
+ dentry = path.dentry;
+ if (!path.dentry || IS_ERR(path.dentry))
+ goto out;
+ AuDebugOn(au_test_anon(path.dentry));
+ } else
+ path.dentry = dget(sb->s_root);
+
+ path.mnt = au_mnt_get(sb);
+ dentry = au_lkup_by_ino(&path, ino, nsi_lock);
+ path_put(&path);
+
+out:
+ AuTraceErrPtr(dentry);
+ return dentry;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int h_acceptable(void *expv, struct dentry *dentry)
+{
+ return 1;
+}
+
+static char *au_build_path(struct dentry *h_parent, struct path *h_rootpath,
+ char *buf, int len, struct super_block *sb)
+{
+ char *p;
+ int n;
+ struct path path;
+
+ p = d_path(h_rootpath, buf, len);
+ if (IS_ERR(p))
+ goto out;
+ n = strlen(p);
+
+ path.mnt = h_rootpath->mnt;
+ path.dentry = h_parent;
+ p = d_path(&path, buf, len);
+ if (IS_ERR(p))
+ goto out;
+ if (n != 1)
+ p += n;
+
+ path.mnt = au_mnt_get(sb);
+ path.dentry = sb->s_root;
+ p = d_path(&path, buf, len - strlen(p));
+ mntput(path.mnt);
+ if (IS_ERR(p))
+ goto out;
+ if (n != 1)
+ p[strlen(p)] = '/';
+
+out:
+ AuTraceErrPtr(p);
+ return p;
+}
+
+static
+struct dentry *decode_by_path(struct super_block *sb, ino_t ino, __u32 *fh,
+ int fh_len, struct au_nfsd_si_lock *nsi_lock)
+{
+ struct dentry *dentry, *h_parent, *root;
+ struct super_block *h_sb;
+ char *pathname, *p;
+ struct vfsmount *h_mnt;
+ struct au_branch *br;
+ int err;
+ struct path path;
+
+ br = au_sbr(sb, nsi_lock->bindex);
+ h_mnt = au_br_mnt(br);
+ h_sb = h_mnt->mnt_sb;
+ /* todo: call lower fh_to_dentry()? fh_to_parent()? */
+ lockdep_off();
+ h_parent = exportfs_decode_fh(h_mnt, (void *)(fh + Fh_tail),
+ fh_len - Fh_tail, fh[Fh_h_type],
+ h_acceptable, /*context*/NULL);
+ lockdep_on();
+ dentry = h_parent;
+ if (unlikely(!h_parent || IS_ERR(h_parent))) {
+ AuWarn1("%s decode_fh failed, %ld\n",
+ au_sbtype(h_sb), PTR_ERR(h_parent));
+ goto out;
+ }
+ dentry = NULL;
+ if (unlikely(au_test_anon(h_parent))) {
+ AuWarn1("%s decode_fh returned a disconnected dentry\n",
+ au_sbtype(h_sb));
+ goto out_h_parent;
+ }
+
+ dentry = ERR_PTR(-ENOMEM);
+ pathname = (void *)__get_free_page(GFP_NOFS);
+ if (unlikely(!pathname))
+ goto out_h_parent;
+
+ root = sb->s_root;
+ path.mnt = h_mnt;
+ di_read_lock_parent(root, !AuLock_IR);
+ path.dentry = au_h_dptr(root, nsi_lock->bindex);
+ di_read_unlock(root, !AuLock_IR);
+ p = au_build_path(h_parent, &path, pathname, PAGE_SIZE, sb);
+ dentry = (void *)p;
+ if (IS_ERR(p))
+ goto out_pathname;
+
+ si_read_unlock(sb);
+ err = vfsub_kern_path(p, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &path);
+ dentry = ERR_PTR(err);
+ if (unlikely(err))
+ goto out_relock;
+
+ dentry = ERR_PTR(-ENOENT);
+ AuDebugOn(au_test_anon(path.dentry));
+ if (unlikely(d_really_is_negative(path.dentry)))
+ goto out_path;
+
+ if (ino != d_inode(path.dentry)->i_ino)
+ dentry = au_lkup_by_ino(&path, ino, /*nsi_lock*/NULL);
+ else
+ dentry = dget(path.dentry);
+
+out_path:
+ path_put(&path);
+out_relock:
+ if (unlikely(si_nfsd_read_lock(sb, nsi_lock) < 0))
+ if (!IS_ERR(dentry)) {
+ dput(dentry);
+ dentry = ERR_PTR(-ESTALE);
+ }
+out_pathname:
+ free_page((unsigned long)pathname);
+out_h_parent:
+ dput(h_parent);
+out:
+ AuTraceErrPtr(dentry);
+ return dentry;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct dentry *
+aufs_fh_to_dentry(struct super_block *sb, struct fid *fid, int fh_len,
+ int fh_type)
+{
+ struct dentry *dentry;
+ __u32 *fh = fid->raw;
+ struct au_branch *br;
+ ino_t ino, dir_ino;
+ struct au_nfsd_si_lock nsi_lock = {
+ .force_lock = 0
+ };
+
+ dentry = ERR_PTR(-ESTALE);
+ /* it should never happen, but the file handle is unreliable */
+ if (unlikely(fh_len < Fh_tail))
+ goto out;
+ nsi_lock.sigen = fh[Fh_sigen];
+ nsi_lock.br_id = fh[Fh_br_id];
+
+ /* branch id may be wrapped around */
+ br = NULL;
+ if (unlikely(si_nfsd_read_lock(sb, &nsi_lock)))
+ goto out;
+ nsi_lock.force_lock = 1;
+
+ /* is this inode still cached? */
+ ino = decode_ino(fh + Fh_ino);
+ /* it should never happen */
+ if (unlikely(ino == AUFS_ROOT_INO))
+ goto out_unlock;
+
+ dir_ino = decode_ino(fh + Fh_dir_ino);
+ dentry = decode_by_ino(sb, ino, dir_ino);
+ if (IS_ERR(dentry))
+ goto out_unlock;
+ if (dentry)
+ goto accept;
+
+ /* is the parent dir cached? */
+ br = au_sbr(sb, nsi_lock.bindex);
+ au_lcnt_inc(&br->br_nfiles);
+ dentry = decode_by_dir_ino(sb, ino, dir_ino, &nsi_lock);
+ if (IS_ERR(dentry))
+ goto out_unlock;
+ if (dentry)
+ goto accept;
+
+ /* lookup path */
+ dentry = decode_by_path(sb, ino, fh, fh_len, &nsi_lock);
+ if (IS_ERR(dentry))
+ goto out_unlock;
+ if (unlikely(!dentry))
+ /* todo?: make it ESTALE */
+ goto out_unlock;
+
+accept:
+ if (!au_digen_test(dentry, au_sigen(sb))
+ && d_inode(dentry)->i_generation == fh[Fh_igen])
+ goto out_unlock; /* success */
+
+ dput(dentry);
+ dentry = ERR_PTR(-ESTALE);
+out_unlock:
+ if (br)
+ au_lcnt_dec(&br->br_nfiles);
+ si_read_unlock(sb);
+out:
+ AuTraceErrPtr(dentry);
+ return dentry;
+}
+
+#if 0 /* reserved for future use */
+/* support subtreecheck option */
+static struct dentry *aufs_fh_to_parent(struct super_block *sb, struct fid *fid,
+ int fh_len, int fh_type)
+{
+ struct dentry *parent;
+ __u32 *fh = fid->raw;
+ ino_t dir_ino;
+
+ dir_ino = decode_ino(fh + Fh_dir_ino);
+ parent = decode_by_ino(sb, dir_ino, 0);
+ if (IS_ERR(parent))
+ goto out;
+ if (!parent)
+ parent = decode_by_path(sb, au_br_index(sb, fh[Fh_br_id]),
+ dir_ino, fh, fh_len);
+
+out:
+ AuTraceErrPtr(parent);
+ return parent;
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+static int aufs_encode_fh(struct inode *inode, __u32 *fh, int *max_len,
+ struct inode *dir)
+{
+ int err;
+ aufs_bindex_t bindex;
+ struct super_block *sb, *h_sb;
+ struct dentry *dentry, *parent, *h_parent;
+ struct inode *h_dir;
+ struct au_branch *br;
+
+ err = -ENOSPC;
+ if (unlikely(*max_len <= Fh_tail)) {
+ AuWarn1("NFSv2 client (max_len %d)?\n", *max_len);
+ goto out;
+ }
+
+ err = FILEID_ROOT;
+ if (inode->i_ino == AUFS_ROOT_INO) {
+ AuDebugOn(inode->i_ino != AUFS_ROOT_INO);
+ goto out;
+ }
+
+ h_parent = NULL;
+ sb = inode->i_sb;
+ err = si_read_lock(sb, AuLock_FLUSH);
+ if (unlikely(err))
+ goto out;
+
+#ifdef CONFIG_AUFS_DEBUG
+ if (unlikely(!au_opt_test(au_mntflags(sb), XINO)))
+ AuWarn1("NFS-exporting requires xino\n");
+#endif
+ err = -EIO;
+ parent = NULL;
+ ii_read_lock_child(inode);
+ bindex = au_ibtop(inode);
+ if (!dir) {
+ dentry = d_find_any_alias(inode);
+ if (unlikely(!dentry))
+ goto out_unlock;
+ AuDebugOn(au_test_anon(dentry));
+ parent = dget_parent(dentry);
+ dput(dentry);
+ if (unlikely(!parent))
+ goto out_unlock;
+ if (d_really_is_positive(parent))
+ dir = d_inode(parent);
+ }
+
+ ii_read_lock_parent(dir);
+ h_dir = au_h_iptr(dir, bindex);
+ ii_read_unlock(dir);
+ if (unlikely(!h_dir))
+ goto out_parent;
+ h_parent = d_find_any_alias(h_dir);
+ if (unlikely(!h_parent))
+ goto out_hparent;
+
+ err = -EPERM;
+ br = au_sbr(sb, bindex);
+ h_sb = au_br_sb(br);
+ if (unlikely(!h_sb->s_export_op)) {
+ AuErr1("%s branch is not exportable\n", au_sbtype(h_sb));
+ goto out_hparent;
+ }
+
+ fh[Fh_br_id] = br->br_id;
+ fh[Fh_sigen] = au_sigen(sb);
+ encode_ino(fh + Fh_ino, inode->i_ino);
+ encode_ino(fh + Fh_dir_ino, dir->i_ino);
+ fh[Fh_igen] = inode->i_generation;
+
+ *max_len -= Fh_tail;
+ fh[Fh_h_type] = exportfs_encode_fh(h_parent, (void *)(fh + Fh_tail),
+ max_len,
+ /*connectable or subtreecheck*/0);
+ err = fh[Fh_h_type];
+ *max_len += Fh_tail;
+ /* todo: macros? */
+ if (err != FILEID_INVALID)
+ err = 99;
+ else
+ AuWarn1("%s encode_fh failed\n", au_sbtype(h_sb));
+
+out_hparent:
+ dput(h_parent);
+out_parent:
+ dput(parent);
+out_unlock:
+ ii_read_unlock(inode);
+ si_read_unlock(sb);
+out:
+ if (unlikely(err < 0))
+ err = FILEID_INVALID;
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int aufs_commit_metadata(struct inode *inode)
+{
+ int err;
+ aufs_bindex_t bindex;
+ struct super_block *sb;
+ struct inode *h_inode;
+ int (*f)(struct inode *inode);
+
+ sb = inode->i_sb;
+ si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
+ ii_write_lock_child(inode);
+ bindex = au_ibtop(inode);
+ AuDebugOn(bindex < 0);
+ h_inode = au_h_iptr(inode, bindex);
+
+ f = h_inode->i_sb->s_export_op->commit_metadata;
+ if (f)
+ err = f(h_inode);
+ else {
+ struct writeback_control wbc = {
+ .sync_mode = WB_SYNC_ALL,
+ .nr_to_write = 0 /* metadata only */
+ };
+
+ err = sync_inode(h_inode, &wbc);
+ }
+
+ au_cpup_attr_timesizes(inode);
+ ii_write_unlock(inode);
+ si_read_unlock(sb);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct export_operations aufs_export_op = {
+ .fh_to_dentry = aufs_fh_to_dentry,
+ /* .fh_to_parent = aufs_fh_to_parent, */
+ .encode_fh = aufs_encode_fh,
+ .commit_metadata = aufs_commit_metadata
+};
+
+void au_export_init(struct super_block *sb)
+{
+ struct au_sbinfo *sbinfo;
+ __u32 u;
+
+ BUILD_BUG_ON_MSG(IS_BUILTIN(CONFIG_AUFS_FS)
+ && IS_MODULE(CONFIG_EXPORTFS),
+ AUFS_NAME ": unsupported configuration "
+ "CONFIG_EXPORTFS=m and CONFIG_AUFS_FS=y");
+
+ sb->s_export_op = &aufs_export_op;
+ sbinfo = au_sbi(sb);
+ sbinfo->si_xigen = NULL;
+ get_random_bytes(&u, sizeof(u));
+ BUILD_BUG_ON(sizeof(u) != sizeof(int));
+ atomic_set(&sbinfo->si_xigen_next, u);
+}
diff --git a/fs/aufs/f_op.c b/fs/aufs/f_op.c
new file mode 100644
index 0000000000..5254b5cd39
--- /dev/null
+++ b/fs/aufs/f_op.c
@@ -0,0 +1,819 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * file and vm operations
+ */
+
+#include <linux/aio.h>
+#include <linux/fs_stack.h>
+#include <linux/mman.h>
+#include <linux/security.h>
+#include "aufs.h"
+
+int au_do_open_nondir(struct file *file, int flags, struct file *h_file)
+{
+ int err;
+ aufs_bindex_t bindex;
+ struct dentry *dentry, *h_dentry;
+ struct au_finfo *finfo;
+ struct inode *h_inode;
+
+ FiMustWriteLock(file);
+
+ err = 0;
+ dentry = file->f_path.dentry;
+ AuDebugOn(IS_ERR_OR_NULL(dentry));
+ finfo = au_fi(file);
+ memset(&finfo->fi_htop, 0, sizeof(finfo->fi_htop));
+ atomic_set(&finfo->fi_mmapped, 0);
+ bindex = au_dbtop(dentry);
+ if (!h_file) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ err = vfsub_test_mntns(file->f_path.mnt, h_dentry->d_sb);
+ if (unlikely(err))
+ goto out;
+ h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0);
+ if (IS_ERR(h_file)) {
+ err = PTR_ERR(h_file);
+ goto out;
+ }
+ } else {
+ h_dentry = h_file->f_path.dentry;
+ err = vfsub_test_mntns(file->f_path.mnt, h_dentry->d_sb);
+ if (unlikely(err))
+ goto out;
+ /* br ref is already inc-ed */
+ }
+
+ if ((flags & __O_TMPFILE)
+ && !(flags & O_EXCL)) {
+ h_inode = file_inode(h_file);
+ spin_lock(&h_inode->i_lock);
+ h_inode->i_state |= I_LINKABLE;
+ spin_unlock(&h_inode->i_lock);
+ }
+ au_set_fbtop(file, bindex);
+ au_set_h_fptr(file, bindex, h_file);
+ au_update_figen(file);
+ /* todo: necessary? */
+ /* file->f_ra = h_file->f_ra; */
+
+out:
+ return err;
+}
+
+static int aufs_open_nondir(struct inode *inode __maybe_unused,
+ struct file *file)
+{
+ int err;
+ struct super_block *sb;
+ struct au_do_open_args args = {
+ .open = au_do_open_nondir
+ };
+
+ AuDbg("%pD, f_flags 0x%x, f_mode 0x%x\n",
+ file, vfsub_file_flags(file), file->f_mode);
+
+ sb = file->f_path.dentry->d_sb;
+ si_read_lock(sb, AuLock_FLUSH);
+ err = au_do_open(file, &args);
+ si_read_unlock(sb);
+ return err;
+}
+
+int aufs_release_nondir(struct inode *inode __maybe_unused, struct file *file)
+{
+ struct au_finfo *finfo;
+ aufs_bindex_t bindex;
+
+ finfo = au_fi(file);
+ au_hbl_del(&finfo->fi_hlist,
+ &au_sbi(file->f_path.dentry->d_sb)->si_files);
+ bindex = finfo->fi_btop;
+ if (bindex >= 0)
+ au_set_h_fptr(file, bindex, NULL);
+
+ au_finfo_fin(file);
+ return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_do_flush_nondir(struct file *file, fl_owner_t id)
+{
+ int err;
+ struct file *h_file;
+
+ err = 0;
+ h_file = au_hf_top(file);
+ if (h_file)
+ err = vfsub_flush(h_file, id);
+ return err;
+}
+
+static int aufs_flush_nondir(struct file *file, fl_owner_t id)
+{
+ return au_do_flush(file, id, au_do_flush_nondir);
+}
+
+/* ---------------------------------------------------------------------- */
+/*
+ * read and write functions acquire [fdi]_rwsem once, but release before
+ * mmap_sem. This is because to stop a race condition between mmap(2).
+ * Releasing these aufs-rwsem should be safe, no branch-management (by keeping
+ * si_rwsem), no harmful copy-up should happen. Actually copy-up may happen in
+ * read functions after [fdi]_rwsem are released, but it should be harmless.
+ */
+
+/* Callers should call au_read_post() or fput() in the end */
+struct file *au_read_pre(struct file *file, int keep_fi, unsigned int lsc)
+{
+ struct file *h_file;
+ int err;
+
+ err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/0, lsc);
+ if (!err) {
+ di_read_unlock(file->f_path.dentry, AuLock_IR);
+ h_file = au_hf_top(file);
+ get_file(h_file);
+ if (!keep_fi)
+ fi_read_unlock(file);
+ } else
+ h_file = ERR_PTR(err);
+
+ return h_file;
+}
+
+static void au_read_post(struct inode *inode, struct file *h_file)
+{
+ /* update without lock, I don't think it a problem */
+ fsstack_copy_attr_atime(inode, file_inode(h_file));
+ fput(h_file);
+}
+
+struct au_write_pre {
+ /* input */
+ unsigned int lsc;
+
+ /* output */
+ blkcnt_t blks;
+ aufs_bindex_t btop;
+};
+
+/*
+ * return with iinfo is write-locked
+ * callers should call au_write_post() or iinfo_write_unlock() + fput() in the
+ * end
+ */
+static struct file *au_write_pre(struct file *file, int do_ready,
+ struct au_write_pre *wpre)
+{
+ struct file *h_file;
+ struct dentry *dentry;
+ int err;
+ unsigned int lsc;
+ struct au_pin pin;
+
+ lsc = 0;
+ if (wpre)
+ lsc = wpre->lsc;
+ err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/1, lsc);
+ h_file = ERR_PTR(err);
+ if (unlikely(err))
+ goto out;
+
+ dentry = file->f_path.dentry;
+ if (do_ready) {
+ err = au_ready_to_write(file, -1, &pin);
+ if (unlikely(err)) {
+ h_file = ERR_PTR(err);
+ di_write_unlock(dentry);
+ goto out_fi;
+ }
+ }
+
+ di_downgrade_lock(dentry, /*flags*/0);
+ if (wpre)
+ wpre->btop = au_fbtop(file);
+ h_file = au_hf_top(file);
+ get_file(h_file);
+ if (wpre)
+ wpre->blks = file_inode(h_file)->i_blocks;
+ if (do_ready)
+ au_unpin(&pin);
+ di_read_unlock(dentry, /*flags*/0);
+
+out_fi:
+ fi_write_unlock(file);
+out:
+ return h_file;
+}
+
+static void au_write_post(struct inode *inode, struct file *h_file,
+ struct au_write_pre *wpre, ssize_t written)
+{
+ struct inode *h_inode;
+
+ au_cpup_attr_timesizes(inode);
+ AuDebugOn(au_ibtop(inode) != wpre->btop);
+ h_inode = file_inode(h_file);
+ inode->i_mode = h_inode->i_mode;
+ ii_write_unlock(inode);
+ /* AuDbg("blks %llu, %llu\n", (u64)blks, (u64)h_inode->i_blocks); */
+ if (written > 0)
+ au_fhsm_wrote(inode->i_sb, wpre->btop,
+ /*force*/h_inode->i_blocks > wpre->blks);
+ fput(h_file);
+}
+
+static ssize_t aufs_read(struct file *file, char __user *buf, size_t count,
+ loff_t *ppos)
+{
+ ssize_t err;
+ struct inode *inode;
+ struct file *h_file;
+ struct super_block *sb;
+
+ inode = file_inode(file);
+ sb = inode->i_sb;
+ si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
+
+ h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out;
+
+ /* filedata may be obsoleted by concurrent copyup, but no problem */
+ err = vfsub_read_u(h_file, buf, count, ppos);
+ /* todo: necessary? */
+ /* file->f_ra = h_file->f_ra; */
+ au_read_post(inode, h_file);
+
+out:
+ si_read_unlock(sb);
+ return err;
+}
+
+/*
+ * todo: very ugly
+ * it locks both of i_mutex and si_rwsem for read in safe.
+ * if the plink maintenance mode continues forever (that is the problem),
+ * may loop forever.
+ */
+static void au_mtx_and_read_lock(struct inode *inode)
+{
+ int err;
+ struct super_block *sb = inode->i_sb;
+
+ while (1) {
+ inode_lock(inode);
+ err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+ if (!err)
+ break;
+ inode_unlock(inode);
+ si_read_lock(sb, AuLock_NOPLMW);
+ si_read_unlock(sb);
+ }
+}
+
+static ssize_t aufs_write(struct file *file, const char __user *ubuf,
+ size_t count, loff_t *ppos)
+{
+ ssize_t err;
+ struct au_write_pre wpre;
+ struct inode *inode;
+ struct file *h_file;
+ char __user *buf = (char __user *)ubuf;
+
+ inode = file_inode(file);
+ au_mtx_and_read_lock(inode);
+
+ wpre.lsc = 0;
+ h_file = au_write_pre(file, /*do_ready*/1, &wpre);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out;
+
+ err = vfsub_write_u(h_file, buf, count, ppos);
+ au_write_post(inode, h_file, &wpre, err);
+
+out:
+ si_read_unlock(inode->i_sb);
+ inode_unlock(inode);
+ return err;
+}
+
+static ssize_t au_do_iter(struct file *h_file, int rw, struct kiocb *kio,
+ struct iov_iter *iov_iter)
+{
+ ssize_t err;
+ struct file *file;
+ ssize_t (*iter)(struct kiocb *, struct iov_iter *);
+
+ err = security_file_permission(h_file, rw);
+ if (unlikely(err))
+ goto out;
+
+ err = -ENOSYS;
+ iter = NULL;
+ if (rw == MAY_READ)
+ iter = h_file->f_op->read_iter;
+ else if (rw == MAY_WRITE)
+ iter = h_file->f_op->write_iter;
+
+ file = kio->ki_filp;
+ kio->ki_filp = h_file;
+ if (iter) {
+ lockdep_off();
+ err = iter(kio, iov_iter);
+ lockdep_on();
+ } else
+ /* currently there is no such fs */
+ WARN_ON_ONCE(1);
+ kio->ki_filp = file;
+
+out:
+ return err;
+}
+
+static ssize_t aufs_read_iter(struct kiocb *kio, struct iov_iter *iov_iter)
+{
+ ssize_t err;
+ struct file *file, *h_file;
+ struct inode *inode;
+ struct super_block *sb;
+
+ file = kio->ki_filp;
+ inode = file_inode(file);
+ sb = inode->i_sb;
+ si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
+
+ h_file = au_read_pre(file, /*keep_fi*/1, /*lsc*/0);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out;
+
+ if (au_test_loopback_kthread()) {
+ au_warn_loopback(h_file->f_path.dentry->d_sb);
+ if (file->f_mapping != h_file->f_mapping) {
+ file->f_mapping = h_file->f_mapping;
+ smp_mb(); /* unnecessary? */
+ }
+ }
+ fi_read_unlock(file);
+
+ err = au_do_iter(h_file, MAY_READ, kio, iov_iter);
+ /* todo: necessary? */
+ /* file->f_ra = h_file->f_ra; */
+ au_read_post(inode, h_file);
+
+out:
+ si_read_unlock(sb);
+ return err;
+}
+
+static ssize_t aufs_write_iter(struct kiocb *kio, struct iov_iter *iov_iter)
+{
+ ssize_t err;
+ struct au_write_pre wpre;
+ struct inode *inode;
+ struct file *file, *h_file;
+
+ file = kio->ki_filp;
+ inode = file_inode(file);
+ au_mtx_and_read_lock(inode);
+
+ wpre.lsc = 0;
+ h_file = au_write_pre(file, /*do_ready*/1, &wpre);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out;
+
+ err = au_do_iter(h_file, MAY_WRITE, kio, iov_iter);
+ au_write_post(inode, h_file, &wpre, err);
+
+out:
+ si_read_unlock(inode->i_sb);
+ inode_unlock(inode);
+ return err;
+}
+
+static ssize_t aufs_splice_read(struct file *file, loff_t *ppos,
+ struct pipe_inode_info *pipe, size_t len,
+ unsigned int flags)
+{
+ ssize_t err;
+ struct file *h_file;
+ struct inode *inode;
+ struct super_block *sb;
+
+ inode = file_inode(file);
+ sb = inode->i_sb;
+ si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
+
+ h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out;
+
+ err = vfsub_splice_to(h_file, ppos, pipe, len, flags);
+ /* todo: necessary? */
+ /* file->f_ra = h_file->f_ra; */
+ au_read_post(inode, h_file);
+
+out:
+ si_read_unlock(sb);
+ return err;
+}
+
+static ssize_t
+aufs_splice_write(struct pipe_inode_info *pipe, struct file *file, loff_t *ppos,
+ size_t len, unsigned int flags)
+{
+ ssize_t err;
+ struct au_write_pre wpre;
+ struct inode *inode;
+ struct file *h_file;
+
+ inode = file_inode(file);
+ au_mtx_and_read_lock(inode);
+
+ wpre.lsc = 0;
+ h_file = au_write_pre(file, /*do_ready*/1, &wpre);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out;
+
+ err = vfsub_splice_from(pipe, h_file, ppos, len, flags);
+ au_write_post(inode, h_file, &wpre, err);
+
+out:
+ si_read_unlock(inode->i_sb);
+ inode_unlock(inode);
+ return err;
+}
+
+static long aufs_fallocate(struct file *file, int mode, loff_t offset,
+ loff_t len)
+{
+ long err;
+ struct au_write_pre wpre;
+ struct inode *inode;
+ struct file *h_file;
+
+ inode = file_inode(file);
+ au_mtx_and_read_lock(inode);
+
+ wpre.lsc = 0;
+ h_file = au_write_pre(file, /*do_ready*/1, &wpre);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out;
+
+ lockdep_off();
+ err = vfs_fallocate(h_file, mode, offset, len);
+ lockdep_on();
+ au_write_post(inode, h_file, &wpre, /*written*/1);
+
+out:
+ si_read_unlock(inode->i_sb);
+ inode_unlock(inode);
+ return err;
+}
+
+static ssize_t aufs_copy_file_range(struct file *src, loff_t src_pos,
+ struct file *dst, loff_t dst_pos,
+ size_t len, unsigned int flags)
+{
+ ssize_t err;
+ struct au_write_pre wpre;
+ enum { SRC, DST };
+ struct {
+ struct inode *inode;
+ struct file *h_file;
+ struct super_block *h_sb;
+ } a[2];
+#define a_src a[SRC]
+#define a_dst a[DST]
+
+ err = -EINVAL;
+ a_src.inode = file_inode(src);
+ if (unlikely(!S_ISREG(a_src.inode->i_mode)))
+ goto out;
+ a_dst.inode = file_inode(dst);
+ if (unlikely(!S_ISREG(a_dst.inode->i_mode)))
+ goto out;
+
+ au_mtx_and_read_lock(a_dst.inode);
+ /*
+ * in order to match the order in di_write_lock2_{child,parent}(),
+ * use f_path.dentry for this comparison.
+ */
+ if (src->f_path.dentry < dst->f_path.dentry) {
+ a_src.h_file = au_read_pre(src, /*keep_fi*/1, AuLsc_FI_1);
+ err = PTR_ERR(a_src.h_file);
+ if (IS_ERR(a_src.h_file))
+ goto out_si;
+
+ wpre.lsc = AuLsc_FI_2;
+ a_dst.h_file = au_write_pre(dst, /*do_ready*/1, &wpre);
+ err = PTR_ERR(a_dst.h_file);
+ if (IS_ERR(a_dst.h_file)) {
+ au_read_post(a_src.inode, a_src.h_file);
+ goto out_si;
+ }
+ } else {
+ wpre.lsc = AuLsc_FI_1;
+ a_dst.h_file = au_write_pre(dst, /*do_ready*/1, &wpre);
+ err = PTR_ERR(a_dst.h_file);
+ if (IS_ERR(a_dst.h_file))
+ goto out_si;
+
+ a_src.h_file = au_read_pre(src, /*keep_fi*/1, AuLsc_FI_2);
+ err = PTR_ERR(a_src.h_file);
+ if (IS_ERR(a_src.h_file)) {
+ au_write_post(a_dst.inode, a_dst.h_file, &wpre,
+ /*written*/0);
+ goto out_si;
+ }
+ }
+
+ err = -EXDEV;
+ a_src.h_sb = file_inode(a_src.h_file)->i_sb;
+ a_dst.h_sb = file_inode(a_dst.h_file)->i_sb;
+ if (unlikely(a_src.h_sb != a_dst.h_sb)) {
+ AuDbgFile(src);
+ AuDbgFile(dst);
+ goto out_file;
+ }
+
+ err = vfsub_copy_file_range(a_src.h_file, src_pos, a_dst.h_file,
+ dst_pos, len, flags);
+
+out_file:
+ au_write_post(a_dst.inode, a_dst.h_file, &wpre, err);
+ fi_read_unlock(src);
+ au_read_post(a_src.inode, a_src.h_file);
+out_si:
+ si_read_unlock(a_dst.inode->i_sb);
+ inode_unlock(a_dst.inode);
+out:
+ return err;
+#undef a_src
+#undef a_dst
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * The locking order around current->mmap_sem.
+ * - in most and regular cases
+ * file I/O syscall -- aufs_read() or something
+ * -- si_rwsem for read -- mmap_sem
+ * (Note that [fdi]i_rwsem are released before mmap_sem).
+ * - in mmap case
+ * mmap(2) -- mmap_sem -- aufs_mmap() -- si_rwsem for read -- [fdi]i_rwsem
+ * This AB-BA order is definitely bad, but is not a problem since "si_rwsem for
+ * read" allows multiple processes to acquire it and [fdi]i_rwsem are not held
+ * in file I/O. Aufs needs to stop lockdep in aufs_mmap() though.
+ * It means that when aufs acquires si_rwsem for write, the process should never
+ * acquire mmap_sem.
+ *
+ * Actually aufs_iterate() holds [fdi]i_rwsem before mmap_sem, but this is not a
+ * problem either since any directory is not able to be mmap-ed.
+ * The similar scenario is applied to aufs_readlink() too.
+ */
+
+#if 0 /* stop calling security_file_mmap() */
+/* cf. linux/include/linux/mman.h: calc_vm_prot_bits() */
+#define AuConv_VM_PROT(f, b) _calc_vm_trans(f, VM_##b, PROT_##b)
+
+static unsigned long au_arch_prot_conv(unsigned long flags)
+{
+ /* currently ppc64 only */
+#ifdef CONFIG_PPC64
+ /* cf. linux/arch/powerpc/include/asm/mman.h */
+ AuDebugOn(arch_calc_vm_prot_bits(-1) != VM_SAO);
+ return AuConv_VM_PROT(flags, SAO);
+#else
+ AuDebugOn(arch_calc_vm_prot_bits(-1));
+ return 0;
+#endif
+}
+
+static unsigned long au_prot_conv(unsigned long flags)
+{
+ return AuConv_VM_PROT(flags, READ)
+ | AuConv_VM_PROT(flags, WRITE)
+ | AuConv_VM_PROT(flags, EXEC)
+ | au_arch_prot_conv(flags);
+}
+
+/* cf. linux/include/linux/mman.h: calc_vm_flag_bits() */
+#define AuConv_VM_MAP(f, b) _calc_vm_trans(f, VM_##b, MAP_##b)
+
+static unsigned long au_flag_conv(unsigned long flags)
+{
+ return AuConv_VM_MAP(flags, GROWSDOWN)
+ | AuConv_VM_MAP(flags, DENYWRITE)
+ | AuConv_VM_MAP(flags, LOCKED);
+}
+#endif
+
+static int aufs_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ int err;
+ const unsigned char wlock
+ = (file->f_mode & FMODE_WRITE) && (vma->vm_flags & VM_SHARED);
+ struct super_block *sb;
+ struct file *h_file;
+ struct inode *inode;
+
+ AuDbgVmRegion(file, vma);
+
+ inode = file_inode(file);
+ sb = inode->i_sb;
+ lockdep_off();
+ si_read_lock(sb, AuLock_NOPLMW);
+
+ h_file = au_write_pre(file, wlock, /*wpre*/NULL);
+ lockdep_on();
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out;
+
+ err = 0;
+ au_set_mmapped(file);
+ au_vm_file_reset(vma, h_file);
+ /*
+ * we cannot call security_mmap_file() here since it may acquire
+ * mmap_sem or i_mutex.
+ *
+ * err = security_mmap_file(h_file, au_prot_conv(vma->vm_flags),
+ * au_flag_conv(vma->vm_flags));
+ */
+ if (!err)
+ err = call_mmap(h_file, vma);
+ if (!err) {
+ au_vm_prfile_set(vma, file);
+ fsstack_copy_attr_atime(inode, file_inode(h_file));
+ goto out_fput; /* success */
+ }
+ au_unset_mmapped(file);
+ au_vm_file_reset(vma, file);
+
+out_fput:
+ lockdep_off();
+ ii_write_unlock(inode);
+ lockdep_on();
+ fput(h_file);
+out:
+ lockdep_off();
+ si_read_unlock(sb);
+ lockdep_on();
+ AuTraceErr(err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int aufs_fsync_nondir(struct file *file, loff_t start, loff_t end,
+ int datasync)
+{
+ int err;
+ struct au_write_pre wpre;
+ struct inode *inode;
+ struct file *h_file;
+
+ err = 0; /* -EBADF; */ /* posix? */
+ if (unlikely(!(file->f_mode & FMODE_WRITE)))
+ goto out;
+
+ inode = file_inode(file);
+ au_mtx_and_read_lock(inode);
+
+ wpre.lsc = 0;
+ h_file = au_write_pre(file, /*do_ready*/1, &wpre);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out_unlock;
+
+ err = vfsub_fsync(h_file, &h_file->f_path, datasync);
+ au_write_post(inode, h_file, &wpre, /*written*/0);
+
+out_unlock:
+ si_read_unlock(inode->i_sb);
+ inode_unlock(inode);
+out:
+ return err;
+}
+
+static int aufs_fasync(int fd, struct file *file, int flag)
+{
+ int err;
+ struct file *h_file;
+ struct super_block *sb;
+
+ sb = file->f_path.dentry->d_sb;
+ si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
+
+ h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out;
+
+ if (h_file->f_op->fasync)
+ err = h_file->f_op->fasync(fd, h_file, flag);
+ fput(h_file); /* instead of au_read_post() */
+
+out:
+ si_read_unlock(sb);
+ return err;
+}
+
+static int aufs_setfl(struct file *file, unsigned long arg)
+{
+ int err;
+ struct file *h_file;
+ struct super_block *sb;
+
+ sb = file->f_path.dentry->d_sb;
+ si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
+
+ h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out;
+
+ /* stop calling h_file->fasync */
+ arg |= vfsub_file_flags(file) & FASYNC;
+ err = setfl(/*unused fd*/-1, h_file, arg);
+ fput(h_file); /* instead of au_read_post() */
+
+out:
+ si_read_unlock(sb);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* no one supports this operation, currently */
+#if 0
+static ssize_t aufs_sendpage(struct file *file, struct page *page, int offset,
+ size_t len, loff_t *pos, int more)
+{
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+const struct file_operations aufs_file_fop = {
+ .owner = THIS_MODULE,
+
+ .llseek = default_llseek,
+
+ .read = aufs_read,
+ .write = aufs_write,
+ .read_iter = aufs_read_iter,
+ .write_iter = aufs_write_iter,
+
+#ifdef CONFIG_AUFS_POLL
+ .poll = aufs_poll,
+#endif
+ .unlocked_ioctl = aufs_ioctl_nondir,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = aufs_compat_ioctl_nondir,
+#endif
+ .mmap = aufs_mmap,
+ .open = aufs_open_nondir,
+ .flush = aufs_flush_nondir,
+ .release = aufs_release_nondir,
+ .fsync = aufs_fsync_nondir,
+ .fasync = aufs_fasync,
+ /* .sendpage = aufs_sendpage, */
+ .setfl = aufs_setfl,
+ .splice_write = aufs_splice_write,
+ .splice_read = aufs_splice_read,
+#if 0
+ .aio_splice_write = aufs_aio_splice_write,
+ .aio_splice_read = aufs_aio_splice_read,
+#endif
+ .fallocate = aufs_fallocate,
+ .copy_file_range = aufs_copy_file_range
+};
diff --git a/fs/aufs/fhsm.c b/fs/aufs/fhsm.c
new file mode 100644
index 0000000000..f86a4c24fb
--- /dev/null
+++ b/fs/aufs/fhsm.c
@@ -0,0 +1,427 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2011-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/*
+ * File-based Hierarchy Storage Management
+ */
+
+#include <linux/anon_inodes.h>
+#include <linux/poll.h>
+#include <linux/seq_file.h>
+#include <linux/statfs.h>
+#include "aufs.h"
+
+static aufs_bindex_t au_fhsm_bottom(struct super_block *sb)
+{
+ struct au_sbinfo *sbinfo;
+ struct au_fhsm *fhsm;
+
+ SiMustAnyLock(sb);
+
+ sbinfo = au_sbi(sb);
+ fhsm = &sbinfo->si_fhsm;
+ AuDebugOn(!fhsm);
+ return fhsm->fhsm_bottom;
+}
+
+void au_fhsm_set_bottom(struct super_block *sb, aufs_bindex_t bindex)
+{
+ struct au_sbinfo *sbinfo;
+ struct au_fhsm *fhsm;
+
+ SiMustWriteLock(sb);
+
+ sbinfo = au_sbi(sb);
+ fhsm = &sbinfo->si_fhsm;
+ AuDebugOn(!fhsm);
+ fhsm->fhsm_bottom = bindex;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_fhsm_test_jiffy(struct au_sbinfo *sbinfo, struct au_branch *br)
+{
+ struct au_br_fhsm *bf;
+
+ bf = br->br_fhsm;
+ MtxMustLock(&bf->bf_lock);
+
+ return !bf->bf_readable
+ || time_after(jiffies,
+ bf->bf_jiffy + sbinfo->si_fhsm.fhsm_expire);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void au_fhsm_notify(struct super_block *sb, int val)
+{
+ struct au_sbinfo *sbinfo;
+ struct au_fhsm *fhsm;
+
+ SiMustAnyLock(sb);
+
+ sbinfo = au_sbi(sb);
+ fhsm = &sbinfo->si_fhsm;
+ if (au_fhsm_pid(fhsm)
+ && atomic_read(&fhsm->fhsm_readable) != -1) {
+ atomic_set(&fhsm->fhsm_readable, val);
+ if (val)
+ wake_up(&fhsm->fhsm_wqh);
+ }
+}
+
+static int au_fhsm_stfs(struct super_block *sb, aufs_bindex_t bindex,
+ struct aufs_stfs *rstfs, int do_lock, int do_notify)
+{
+ int err;
+ struct au_branch *br;
+ struct au_br_fhsm *bf;
+
+ br = au_sbr(sb, bindex);
+ AuDebugOn(au_br_rdonly(br));
+ bf = br->br_fhsm;
+ AuDebugOn(!bf);
+
+ if (do_lock)
+ mutex_lock(&bf->bf_lock);
+ else
+ MtxMustLock(&bf->bf_lock);
+
+ /* sb->s_root for NFS is unreliable */
+ err = au_br_stfs(br, &bf->bf_stfs);
+ if (unlikely(err)) {
+ AuErr1("FHSM failed (%d), b%d, ignored.\n", bindex, err);
+ goto out;
+ }
+
+ bf->bf_jiffy = jiffies;
+ bf->bf_readable = 1;
+ if (do_notify)
+ au_fhsm_notify(sb, /*val*/1);
+ if (rstfs)
+ *rstfs = bf->bf_stfs;
+
+out:
+ if (do_lock)
+ mutex_unlock(&bf->bf_lock);
+ au_fhsm_notify(sb, /*val*/1);
+
+ return err;
+}
+
+void au_fhsm_wrote(struct super_block *sb, aufs_bindex_t bindex, int force)
+{
+ int err;
+ struct au_sbinfo *sbinfo;
+ struct au_fhsm *fhsm;
+ struct au_branch *br;
+ struct au_br_fhsm *bf;
+
+ AuDbg("b%d, force %d\n", bindex, force);
+ SiMustAnyLock(sb);
+
+ sbinfo = au_sbi(sb);
+ fhsm = &sbinfo->si_fhsm;
+ if (!au_ftest_si(sbinfo, FHSM)
+ || fhsm->fhsm_bottom == bindex)
+ return;
+
+ br = au_sbr(sb, bindex);
+ bf = br->br_fhsm;
+ AuDebugOn(!bf);
+ mutex_lock(&bf->bf_lock);
+ if (force
+ || au_fhsm_pid(fhsm)
+ || au_fhsm_test_jiffy(sbinfo, br))
+ err = au_fhsm_stfs(sb, bindex, /*rstfs*/NULL, /*do_lock*/0,
+ /*do_notify*/1);
+ mutex_unlock(&bf->bf_lock);
+}
+
+void au_fhsm_wrote_all(struct super_block *sb, int force)
+{
+ aufs_bindex_t bindex, bbot;
+ struct au_branch *br;
+
+ /* exclude the bottom */
+ bbot = au_fhsm_bottom(sb);
+ for (bindex = 0; bindex < bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ if (au_br_fhsm(br->br_perm))
+ au_fhsm_wrote(sb, bindex, force);
+ }
+}
+
+/* ---------------------------------------------------------------------- */
+
+static __poll_t au_fhsm_poll(struct file *file, struct poll_table_struct *wait)
+{
+ __poll_t mask;
+ struct au_sbinfo *sbinfo;
+ struct au_fhsm *fhsm;
+
+ mask = 0;
+ sbinfo = file->private_data;
+ fhsm = &sbinfo->si_fhsm;
+ poll_wait(file, &fhsm->fhsm_wqh, wait);
+ if (atomic_read(&fhsm->fhsm_readable))
+ mask = EPOLLIN /* | EPOLLRDNORM */;
+
+ if (!mask)
+ AuDbg("mask 0x%x\n", mask);
+ return mask;
+}
+
+static int au_fhsm_do_read_one(struct aufs_stbr __user *stbr,
+ struct aufs_stfs *stfs, __s16 brid)
+{
+ int err;
+
+ err = copy_to_user(&stbr->stfs, stfs, sizeof(*stfs));
+ if (!err)
+ err = __put_user(brid, &stbr->brid);
+ if (unlikely(err))
+ err = -EFAULT;
+
+ return err;
+}
+
+static ssize_t au_fhsm_do_read(struct super_block *sb,
+ struct aufs_stbr __user *stbr, size_t count)
+{
+ ssize_t err;
+ int nstbr;
+ aufs_bindex_t bindex, bbot;
+ struct au_branch *br;
+ struct au_br_fhsm *bf;
+
+ /* except the bottom branch */
+ err = 0;
+ nstbr = 0;
+ bbot = au_fhsm_bottom(sb);
+ for (bindex = 0; !err && bindex < bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ if (!au_br_fhsm(br->br_perm))
+ continue;
+
+ bf = br->br_fhsm;
+ mutex_lock(&bf->bf_lock);
+ if (bf->bf_readable) {
+ err = -EFAULT;
+ if (count >= sizeof(*stbr))
+ err = au_fhsm_do_read_one(stbr++, &bf->bf_stfs,
+ br->br_id);
+ if (!err) {
+ bf->bf_readable = 0;
+ count -= sizeof(*stbr);
+ nstbr++;
+ }
+ }
+ mutex_unlock(&bf->bf_lock);
+ }
+ if (!err)
+ err = sizeof(*stbr) * nstbr;
+
+ return err;
+}
+
+static ssize_t au_fhsm_read(struct file *file, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ ssize_t err;
+ int readable;
+ aufs_bindex_t nfhsm, bindex, bbot;
+ struct au_sbinfo *sbinfo;
+ struct au_fhsm *fhsm;
+ struct au_branch *br;
+ struct super_block *sb;
+
+ err = 0;
+ sbinfo = file->private_data;
+ fhsm = &sbinfo->si_fhsm;
+need_data:
+ spin_lock_irq(&fhsm->fhsm_wqh.lock);
+ if (!atomic_read(&fhsm->fhsm_readable)) {
+ if (vfsub_file_flags(file) & O_NONBLOCK)
+ err = -EAGAIN;
+ else
+ err = wait_event_interruptible_locked_irq
+ (fhsm->fhsm_wqh,
+ atomic_read(&fhsm->fhsm_readable));
+ }
+ spin_unlock_irq(&fhsm->fhsm_wqh.lock);
+ if (unlikely(err))
+ goto out;
+
+ /* sb may already be dead */
+ au_rw_read_lock(&sbinfo->si_rwsem);
+ readable = atomic_read(&fhsm->fhsm_readable);
+ if (readable > 0) {
+ sb = sbinfo->si_sb;
+ AuDebugOn(!sb);
+ /* exclude the bottom branch */
+ nfhsm = 0;
+ bbot = au_fhsm_bottom(sb);
+ for (bindex = 0; bindex < bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ if (au_br_fhsm(br->br_perm))
+ nfhsm++;
+ }
+ err = -EMSGSIZE;
+ if (nfhsm * sizeof(struct aufs_stbr) <= count) {
+ atomic_set(&fhsm->fhsm_readable, 0);
+ err = au_fhsm_do_read(sbinfo->si_sb, (void __user *)buf,
+ count);
+ }
+ }
+ au_rw_read_unlock(&sbinfo->si_rwsem);
+ if (!readable)
+ goto need_data;
+
+out:
+ return err;
+}
+
+static int au_fhsm_release(struct inode *inode, struct file *file)
+{
+ struct au_sbinfo *sbinfo;
+ struct au_fhsm *fhsm;
+
+ /* sb may already be dead */
+ sbinfo = file->private_data;
+ fhsm = &sbinfo->si_fhsm;
+ spin_lock(&fhsm->fhsm_spin);
+ fhsm->fhsm_pid = 0;
+ spin_unlock(&fhsm->fhsm_spin);
+ kobject_put(&sbinfo->si_kobj);
+
+ return 0;
+}
+
+static const struct file_operations au_fhsm_fops = {
+ .owner = THIS_MODULE,
+ .llseek = noop_llseek,
+ .read = au_fhsm_read,
+ .poll = au_fhsm_poll,
+ .release = au_fhsm_release
+};
+
+int au_fhsm_fd(struct super_block *sb, int oflags)
+{
+ int err, fd;
+ struct au_sbinfo *sbinfo;
+ struct au_fhsm *fhsm;
+
+ err = -EPERM;
+ if (unlikely(!capable(CAP_SYS_ADMIN)))
+ goto out;
+
+ err = -EINVAL;
+ if (unlikely(oflags & ~(O_CLOEXEC | O_NONBLOCK)))
+ goto out;
+
+ err = 0;
+ sbinfo = au_sbi(sb);
+ fhsm = &sbinfo->si_fhsm;
+ spin_lock(&fhsm->fhsm_spin);
+ if (!fhsm->fhsm_pid)
+ fhsm->fhsm_pid = current->pid;
+ else
+ err = -EBUSY;
+ spin_unlock(&fhsm->fhsm_spin);
+ if (unlikely(err))
+ goto out;
+
+ oflags |= O_RDONLY;
+ /* oflags |= FMODE_NONOTIFY; */
+ fd = anon_inode_getfd("[aufs_fhsm]", &au_fhsm_fops, sbinfo, oflags);
+ err = fd;
+ if (unlikely(fd < 0))
+ goto out_pid;
+
+ /* succeed regardless 'fhsm' status */
+ kobject_get(&sbinfo->si_kobj);
+ si_noflush_read_lock(sb);
+ if (au_ftest_si(sbinfo, FHSM))
+ au_fhsm_wrote_all(sb, /*force*/0);
+ si_read_unlock(sb);
+ goto out; /* success */
+
+out_pid:
+ spin_lock(&fhsm->fhsm_spin);
+ fhsm->fhsm_pid = 0;
+ spin_unlock(&fhsm->fhsm_spin);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_fhsm_br_alloc(struct au_branch *br)
+{
+ int err;
+
+ err = 0;
+ br->br_fhsm = kmalloc(sizeof(*br->br_fhsm), GFP_NOFS);
+ if (br->br_fhsm)
+ au_br_fhsm_init(br->br_fhsm);
+ else
+ err = -ENOMEM;
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_fhsm_fin(struct super_block *sb)
+{
+ au_fhsm_notify(sb, /*val*/-1);
+}
+
+void au_fhsm_init(struct au_sbinfo *sbinfo)
+{
+ struct au_fhsm *fhsm;
+
+ fhsm = &sbinfo->si_fhsm;
+ spin_lock_init(&fhsm->fhsm_spin);
+ init_waitqueue_head(&fhsm->fhsm_wqh);
+ atomic_set(&fhsm->fhsm_readable, 0);
+ fhsm->fhsm_expire
+ = msecs_to_jiffies(AUFS_FHSM_CACHE_DEF_SEC * MSEC_PER_SEC);
+ fhsm->fhsm_bottom = -1;
+}
+
+void au_fhsm_set(struct au_sbinfo *sbinfo, unsigned int sec)
+{
+ sbinfo->si_fhsm.fhsm_expire
+ = msecs_to_jiffies(sec * MSEC_PER_SEC);
+}
+
+void au_fhsm_show(struct seq_file *seq, struct au_sbinfo *sbinfo)
+{
+ unsigned int u;
+
+ if (!au_ftest_si(sbinfo, FHSM))
+ return;
+
+ u = jiffies_to_msecs(sbinfo->si_fhsm.fhsm_expire) / MSEC_PER_SEC;
+ if (u != AUFS_FHSM_CACHE_DEF_SEC)
+ seq_printf(seq, ",fhsm_sec=%u", u);
+}
diff --git a/fs/aufs/file.c b/fs/aufs/file.c
new file mode 100644
index 0000000000..dbb33855d2
--- /dev/null
+++ b/fs/aufs/file.c
@@ -0,0 +1,863 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * handling file/dir, and address_space operation
+ */
+
+#ifdef CONFIG_AUFS_DEBUG
+#include <linux/migrate.h>
+#endif
+#include <linux/pagemap.h>
+#include "aufs.h"
+
+/* drop flags for writing */
+unsigned int au_file_roflags(unsigned int flags)
+{
+ flags &= ~(O_WRONLY | O_RDWR | O_APPEND | O_CREAT | O_TRUNC);
+ flags |= O_RDONLY | O_NOATIME;
+ return flags;
+}
+
+/* common functions to regular file and dir */
+struct file *au_h_open(struct dentry *dentry, aufs_bindex_t bindex, int flags,
+ struct file *file, int force_wr)
+{
+ struct file *h_file;
+ struct dentry *h_dentry;
+ struct inode *h_inode;
+ struct super_block *sb;
+ struct au_branch *br;
+ struct path h_path;
+ int err;
+
+ /* a race condition can happen between open and unlink/rmdir */
+ h_file = ERR_PTR(-ENOENT);
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (au_test_nfsd() && (!h_dentry || d_is_negative(h_dentry)))
+ goto out;
+ h_inode = d_inode(h_dentry);
+ spin_lock(&h_dentry->d_lock);
+ err = (!d_unhashed(dentry) && d_unlinked(h_dentry))
+ /* || !d_inode(dentry)->i_nlink */
+ ;
+ spin_unlock(&h_dentry->d_lock);
+ if (unlikely(err))
+ goto out;
+
+ sb = dentry->d_sb;
+ br = au_sbr(sb, bindex);
+ err = au_br_test_oflag(flags, br);
+ h_file = ERR_PTR(err);
+ if (unlikely(err))
+ goto out;
+
+ /* drop flags for writing */
+ if (au_test_ro(sb, bindex, d_inode(dentry))) {
+ if (force_wr && !(flags & O_WRONLY))
+ force_wr = 0;
+ flags = au_file_roflags(flags);
+ if (force_wr) {
+ h_file = ERR_PTR(-EROFS);
+ flags = au_file_roflags(flags);
+ if (unlikely(vfsub_native_ro(h_inode)
+ || IS_APPEND(h_inode)))
+ goto out;
+ flags &= ~O_ACCMODE;
+ flags |= O_WRONLY;
+ }
+ }
+ flags &= ~O_CREAT;
+ au_lcnt_inc(&br->br_nfiles);
+ h_path.dentry = h_dentry;
+ h_path.mnt = au_br_mnt(br);
+ h_file = vfsub_dentry_open(&h_path, flags);
+ if (IS_ERR(h_file))
+ goto out_br;
+
+ if (flags & __FMODE_EXEC) {
+ err = deny_write_access(h_file);
+ if (unlikely(err)) {
+ fput(h_file);
+ h_file = ERR_PTR(err);
+ goto out_br;
+ }
+ }
+ fsnotify_open(h_file);
+ goto out; /* success */
+
+out_br:
+ au_lcnt_dec(&br->br_nfiles);
+out:
+ return h_file;
+}
+
+static int au_cmoo(struct dentry *dentry)
+{
+ int err, cmoo, matched;
+ unsigned int udba;
+ struct path h_path;
+ struct au_pin pin;
+ struct au_cp_generic cpg = {
+ .dentry = dentry,
+ .bdst = -1,
+ .bsrc = -1,
+ .len = -1,
+ .pin = &pin,
+ .flags = AuCpup_DTIME | AuCpup_HOPEN
+ };
+ struct inode *delegated;
+ struct super_block *sb;
+ struct au_sbinfo *sbinfo;
+ struct au_fhsm *fhsm;
+ pid_t pid;
+ struct au_branch *br;
+ struct dentry *parent;
+ struct au_hinode *hdir;
+
+ DiMustWriteLock(dentry);
+ IiMustWriteLock(d_inode(dentry));
+
+ err = 0;
+ if (IS_ROOT(dentry))
+ goto out;
+ cpg.bsrc = au_dbtop(dentry);
+ if (!cpg.bsrc)
+ goto out;
+
+ sb = dentry->d_sb;
+ sbinfo = au_sbi(sb);
+ fhsm = &sbinfo->si_fhsm;
+ pid = au_fhsm_pid(fhsm);
+ rcu_read_lock();
+ matched = (pid
+ && (current->pid == pid
+ || rcu_dereference(current->real_parent)->pid == pid));
+ rcu_read_unlock();
+ if (matched)
+ goto out;
+
+ br = au_sbr(sb, cpg.bsrc);
+ cmoo = au_br_cmoo(br->br_perm);
+ if (!cmoo)
+ goto out;
+ if (!d_is_reg(dentry))
+ cmoo &= AuBrAttr_COO_ALL;
+ if (!cmoo)
+ goto out;
+
+ parent = dget_parent(dentry);
+ di_write_lock_parent(parent);
+ err = au_wbr_do_copyup_bu(dentry, cpg.bsrc - 1);
+ cpg.bdst = err;
+ if (unlikely(err < 0)) {
+ err = 0; /* there is no upper writable branch */
+ goto out_dgrade;
+ }
+ AuDbg("bsrc %d, bdst %d\n", cpg.bsrc, cpg.bdst);
+
+ /* do not respect the coo attrib for the target branch */
+ err = au_cpup_dirs(dentry, cpg.bdst);
+ if (unlikely(err))
+ goto out_dgrade;
+
+ di_downgrade_lock(parent, AuLock_IR);
+ udba = au_opt_udba(sb);
+ err = au_pin(&pin, dentry, cpg.bdst, udba,
+ AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+ if (unlikely(err))
+ goto out_parent;
+
+ err = au_sio_cpup_simple(&cpg);
+ au_unpin(&pin);
+ if (unlikely(err))
+ goto out_parent;
+ if (!(cmoo & AuBrWAttr_MOO))
+ goto out_parent; /* success */
+
+ err = au_pin(&pin, dentry, cpg.bsrc, udba,
+ AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+ if (unlikely(err))
+ goto out_parent;
+
+ h_path.mnt = au_br_mnt(br);
+ h_path.dentry = au_h_dptr(dentry, cpg.bsrc);
+ hdir = au_hi(d_inode(parent), cpg.bsrc);
+ delegated = NULL;
+ err = vfsub_unlink(hdir->hi_inode, &h_path, &delegated, /*force*/1);
+ au_unpin(&pin);
+ /* todo: keep h_dentry or not? */
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal unlink\n");
+ iput(delegated);
+ }
+ if (unlikely(err)) {
+ pr_err("unlink %pd after coo failed (%d), ignored\n",
+ dentry, err);
+ err = 0;
+ }
+ goto out_parent; /* success */
+
+out_dgrade:
+ di_downgrade_lock(parent, AuLock_IR);
+out_parent:
+ di_read_unlock(parent, AuLock_IR);
+ dput(parent);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+int au_do_open(struct file *file, struct au_do_open_args *args)
+{
+ int err, aopen = args->aopen;
+ struct dentry *dentry;
+ struct au_finfo *finfo;
+
+ if (!aopen)
+ err = au_finfo_init(file, args->fidir);
+ else {
+ lockdep_off();
+ err = au_finfo_init(file, args->fidir);
+ lockdep_on();
+ }
+ if (unlikely(err))
+ goto out;
+
+ dentry = file->f_path.dentry;
+ AuDebugOn(IS_ERR_OR_NULL(dentry));
+ di_write_lock_child(dentry);
+ err = au_cmoo(dentry);
+ di_downgrade_lock(dentry, AuLock_IR);
+ if (!err) {
+ if (!aopen)
+ err = args->open(file, vfsub_file_flags(file), NULL);
+ else {
+ lockdep_off();
+ err = args->open(file, vfsub_file_flags(file),
+ args->h_file);
+ lockdep_on();
+ }
+ }
+ di_read_unlock(dentry, AuLock_IR);
+
+ finfo = au_fi(file);
+ if (!err) {
+ finfo->fi_file = file;
+ au_hbl_add(&finfo->fi_hlist,
+ &au_sbi(file->f_path.dentry->d_sb)->si_files);
+ }
+ if (!aopen)
+ fi_write_unlock(file);
+ else {
+ lockdep_off();
+ fi_write_unlock(file);
+ lockdep_on();
+ }
+ if (unlikely(err)) {
+ finfo->fi_hdir = NULL;
+ au_finfo_fin(file);
+ }
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+int au_reopen_nondir(struct file *file)
+{
+ int err;
+ aufs_bindex_t btop;
+ struct dentry *dentry;
+ struct au_branch *br;
+ struct file *h_file, *h_file_tmp;
+
+ dentry = file->f_path.dentry;
+ btop = au_dbtop(dentry);
+ br = au_sbr(dentry->d_sb, btop);
+ h_file_tmp = NULL;
+ if (au_fbtop(file) == btop) {
+ h_file = au_hf_top(file);
+ if (file->f_mode == h_file->f_mode)
+ return 0; /* success */
+ h_file_tmp = h_file;
+ get_file(h_file_tmp);
+ au_lcnt_inc(&br->br_nfiles);
+ au_set_h_fptr(file, btop, NULL);
+ }
+ AuDebugOn(au_fi(file)->fi_hdir);
+ /*
+ * it can happen
+ * file exists on both of rw and ro
+ * open --> dbtop and fbtop are both 0
+ * prepend a branch as rw, "rw" become ro
+ * remove rw/file
+ * delete the top branch, "rw" becomes rw again
+ * --> dbtop is 1, fbtop is still 0
+ * write --> fbtop is 0 but dbtop is 1
+ */
+ /* AuDebugOn(au_fbtop(file) < btop); */
+
+ h_file = au_h_open(dentry, btop, vfsub_file_flags(file) & ~O_TRUNC,
+ file, /*force_wr*/0);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file)) {
+ if (h_file_tmp) {
+ /* revert */
+ au_set_h_fptr(file, btop, h_file_tmp);
+ h_file_tmp = NULL;
+ }
+ goto out; /* todo: close all? */
+ }
+
+ err = 0;
+ au_set_fbtop(file, btop);
+ au_set_h_fptr(file, btop, h_file);
+ au_update_figen(file);
+ /* todo: necessary? */
+ /* file->f_ra = h_file->f_ra; */
+
+out:
+ if (h_file_tmp) {
+ fput(h_file_tmp);
+ au_lcnt_dec(&br->br_nfiles);
+ }
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_reopen_wh(struct file *file, aufs_bindex_t btgt,
+ struct dentry *hi_wh)
+{
+ int err;
+ aufs_bindex_t btop;
+ struct au_dinfo *dinfo;
+ struct dentry *h_dentry;
+ struct au_hdentry *hdp;
+
+ dinfo = au_di(file->f_path.dentry);
+ AuRwMustWriteLock(&dinfo->di_rwsem);
+
+ btop = dinfo->di_btop;
+ dinfo->di_btop = btgt;
+ hdp = au_hdentry(dinfo, btgt);
+ h_dentry = hdp->hd_dentry;
+ hdp->hd_dentry = hi_wh;
+ err = au_reopen_nondir(file);
+ hdp->hd_dentry = h_dentry;
+ dinfo->di_btop = btop;
+
+ return err;
+}
+
+static int au_ready_to_write_wh(struct file *file, loff_t len,
+ aufs_bindex_t bcpup, struct au_pin *pin)
+{
+ int err;
+ struct inode *inode, *h_inode;
+ struct dentry *h_dentry, *hi_wh;
+ struct au_cp_generic cpg = {
+ .dentry = file->f_path.dentry,
+ .bdst = bcpup,
+ .bsrc = -1,
+ .len = len,
+ .pin = pin
+ };
+
+ au_update_dbtop(cpg.dentry);
+ inode = d_inode(cpg.dentry);
+ h_inode = NULL;
+ if (au_dbtop(cpg.dentry) <= bcpup
+ && au_dbbot(cpg.dentry) >= bcpup) {
+ h_dentry = au_h_dptr(cpg.dentry, bcpup);
+ if (h_dentry && d_is_positive(h_dentry))
+ h_inode = d_inode(h_dentry);
+ }
+ hi_wh = au_hi_wh(inode, bcpup);
+ if (!hi_wh && !h_inode)
+ err = au_sio_cpup_wh(&cpg, file);
+ else
+ /* already copied-up after unlink */
+ err = au_reopen_wh(file, bcpup, hi_wh);
+
+ if (!err
+ && (inode->i_nlink > 1
+ || (inode->i_state & I_LINKABLE))
+ && au_opt_test(au_mntflags(cpg.dentry->d_sb), PLINK))
+ au_plink_append(inode, bcpup, au_h_dptr(cpg.dentry, bcpup));
+
+ return err;
+}
+
+/*
+ * prepare the @file for writing.
+ */
+int au_ready_to_write(struct file *file, loff_t len, struct au_pin *pin)
+{
+ int err;
+ aufs_bindex_t dbtop;
+ struct dentry *parent;
+ struct inode *inode;
+ struct super_block *sb;
+ struct file *h_file;
+ struct au_cp_generic cpg = {
+ .dentry = file->f_path.dentry,
+ .bdst = -1,
+ .bsrc = -1,
+ .len = len,
+ .pin = pin,
+ .flags = AuCpup_DTIME
+ };
+
+ sb = cpg.dentry->d_sb;
+ inode = d_inode(cpg.dentry);
+ cpg.bsrc = au_fbtop(file);
+ err = au_test_ro(sb, cpg.bsrc, inode);
+ if (!err && (au_hf_top(file)->f_mode & FMODE_WRITE)) {
+ err = au_pin(pin, cpg.dentry, cpg.bsrc, AuOpt_UDBA_NONE,
+ /*flags*/0);
+ goto out;
+ }
+
+ /* need to cpup or reopen */
+ parent = dget_parent(cpg.dentry);
+ di_write_lock_parent(parent);
+ err = AuWbrCopyup(au_sbi(sb), cpg.dentry);
+ cpg.bdst = err;
+ if (unlikely(err < 0))
+ goto out_dgrade;
+ err = 0;
+
+ if (!d_unhashed(cpg.dentry) && !au_h_dptr(parent, cpg.bdst)) {
+ err = au_cpup_dirs(cpg.dentry, cpg.bdst);
+ if (unlikely(err))
+ goto out_dgrade;
+ }
+
+ err = au_pin(pin, cpg.dentry, cpg.bdst, AuOpt_UDBA_NONE,
+ AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+ if (unlikely(err))
+ goto out_dgrade;
+
+ dbtop = au_dbtop(cpg.dentry);
+ if (dbtop <= cpg.bdst)
+ cpg.bsrc = cpg.bdst;
+
+ if (dbtop <= cpg.bdst /* just reopen */
+ || !d_unhashed(cpg.dentry) /* copyup and reopen */
+ ) {
+ h_file = au_h_open_pre(cpg.dentry, cpg.bsrc, /*force_wr*/0);
+ if (IS_ERR(h_file))
+ err = PTR_ERR(h_file);
+ else {
+ di_downgrade_lock(parent, AuLock_IR);
+ if (dbtop > cpg.bdst)
+ err = au_sio_cpup_simple(&cpg);
+ if (!err)
+ err = au_reopen_nondir(file);
+ au_h_open_post(cpg.dentry, cpg.bsrc, h_file);
+ }
+ } else { /* copyup as wh and reopen */
+ /*
+ * since writable hfsplus branch is not supported,
+ * h_open_pre/post() are unnecessary.
+ */
+ err = au_ready_to_write_wh(file, len, cpg.bdst, pin);
+ di_downgrade_lock(parent, AuLock_IR);
+ }
+
+ if (!err) {
+ au_pin_set_parent_lflag(pin, /*lflag*/0);
+ goto out_dput; /* success */
+ }
+ au_unpin(pin);
+ goto out_unlock;
+
+out_dgrade:
+ di_downgrade_lock(parent, AuLock_IR);
+out_unlock:
+ di_read_unlock(parent, AuLock_IR);
+out_dput:
+ dput(parent);
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_do_flush(struct file *file, fl_owner_t id,
+ int (*flush)(struct file *file, fl_owner_t id))
+{
+ int err;
+ struct super_block *sb;
+ struct inode *inode;
+
+ inode = file_inode(file);
+ sb = inode->i_sb;
+ si_noflush_read_lock(sb);
+ fi_read_lock(file);
+ ii_read_lock_child(inode);
+
+ err = flush(file, id);
+ au_cpup_attr_timesizes(inode);
+
+ ii_read_unlock(inode);
+ fi_read_unlock(file);
+ si_read_unlock(sb);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_file_refresh_by_inode(struct file *file, int *need_reopen)
+{
+ int err;
+ struct au_pin pin;
+ struct au_finfo *finfo;
+ struct dentry *parent, *hi_wh;
+ struct inode *inode;
+ struct super_block *sb;
+ struct au_cp_generic cpg = {
+ .dentry = file->f_path.dentry,
+ .bdst = -1,
+ .bsrc = -1,
+ .len = -1,
+ .pin = &pin,
+ .flags = AuCpup_DTIME
+ };
+
+ FiMustWriteLock(file);
+
+ err = 0;
+ finfo = au_fi(file);
+ sb = cpg.dentry->d_sb;
+ inode = d_inode(cpg.dentry);
+ cpg.bdst = au_ibtop(inode);
+ if (cpg.bdst == finfo->fi_btop || IS_ROOT(cpg.dentry))
+ goto out;
+
+ parent = dget_parent(cpg.dentry);
+ if (au_test_ro(sb, cpg.bdst, inode)) {
+ di_read_lock_parent(parent, !AuLock_IR);
+ err = AuWbrCopyup(au_sbi(sb), cpg.dentry);
+ cpg.bdst = err;
+ di_read_unlock(parent, !AuLock_IR);
+ if (unlikely(err < 0))
+ goto out_parent;
+ err = 0;
+ }
+
+ di_read_lock_parent(parent, AuLock_IR);
+ hi_wh = au_hi_wh(inode, cpg.bdst);
+ if (!S_ISDIR(inode->i_mode)
+ && au_opt_test(au_mntflags(sb), PLINK)
+ && au_plink_test(inode)
+ && !d_unhashed(cpg.dentry)
+ && cpg.bdst < au_dbtop(cpg.dentry)) {
+ err = au_test_and_cpup_dirs(cpg.dentry, cpg.bdst);
+ if (unlikely(err))
+ goto out_unlock;
+
+ /* always superio. */
+ err = au_pin(&pin, cpg.dentry, cpg.bdst, AuOpt_UDBA_NONE,
+ AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+ if (!err) {
+ err = au_sio_cpup_simple(&cpg);
+ au_unpin(&pin);
+ }
+ } else if (hi_wh) {
+ /* already copied-up after unlink */
+ err = au_reopen_wh(file, cpg.bdst, hi_wh);
+ *need_reopen = 0;
+ }
+
+out_unlock:
+ di_read_unlock(parent, AuLock_IR);
+out_parent:
+ dput(parent);
+out:
+ return err;
+}
+
+static void au_do_refresh_dir(struct file *file)
+{
+ aufs_bindex_t bindex, bbot, new_bindex, brid;
+ struct au_hfile *p, tmp, *q;
+ struct au_finfo *finfo;
+ struct super_block *sb;
+ struct au_fidir *fidir;
+
+ FiMustWriteLock(file);
+
+ sb = file->f_path.dentry->d_sb;
+ finfo = au_fi(file);
+ fidir = finfo->fi_hdir;
+ AuDebugOn(!fidir);
+ p = fidir->fd_hfile + finfo->fi_btop;
+ brid = p->hf_br->br_id;
+ bbot = fidir->fd_bbot;
+ for (bindex = finfo->fi_btop; bindex <= bbot; bindex++, p++) {
+ if (!p->hf_file)
+ continue;
+
+ new_bindex = au_br_index(sb, p->hf_br->br_id);
+ if (new_bindex == bindex)
+ continue;
+ if (new_bindex < 0) {
+ au_set_h_fptr(file, bindex, NULL);
+ continue;
+ }
+
+ /* swap two lower inode, and loop again */
+ q = fidir->fd_hfile + new_bindex;
+ tmp = *q;
+ *q = *p;
+ *p = tmp;
+ if (tmp.hf_file) {
+ bindex--;
+ p--;
+ }
+ }
+
+ p = fidir->fd_hfile;
+ if (!au_test_mmapped(file) && !d_unlinked(file->f_path.dentry)) {
+ bbot = au_sbbot(sb);
+ for (finfo->fi_btop = 0; finfo->fi_btop <= bbot;
+ finfo->fi_btop++, p++)
+ if (p->hf_file) {
+ if (file_inode(p->hf_file))
+ break;
+ au_hfput(p, /*execed*/0);
+ }
+ } else {
+ bbot = au_br_index(sb, brid);
+ for (finfo->fi_btop = 0; finfo->fi_btop < bbot;
+ finfo->fi_btop++, p++)
+ if (p->hf_file)
+ au_hfput(p, /*execed*/0);
+ bbot = au_sbbot(sb);
+ }
+
+ p = fidir->fd_hfile + bbot;
+ for (fidir->fd_bbot = bbot; fidir->fd_bbot >= finfo->fi_btop;
+ fidir->fd_bbot--, p--)
+ if (p->hf_file) {
+ if (file_inode(p->hf_file))
+ break;
+ au_hfput(p, /*execed*/0);
+ }
+ AuDebugOn(fidir->fd_bbot < finfo->fi_btop);
+}
+
+/*
+ * after branch manipulating, refresh the file.
+ */
+static int refresh_file(struct file *file, int (*reopen)(struct file *file))
+{
+ int err, need_reopen, nbr;
+ aufs_bindex_t bbot, bindex;
+ struct dentry *dentry;
+ struct super_block *sb;
+ struct au_finfo *finfo;
+ struct au_hfile *hfile;
+
+ dentry = file->f_path.dentry;
+ sb = dentry->d_sb;
+ nbr = au_sbbot(sb) + 1;
+ finfo = au_fi(file);
+ if (!finfo->fi_hdir) {
+ hfile = &finfo->fi_htop;
+ AuDebugOn(!hfile->hf_file);
+ bindex = au_br_index(sb, hfile->hf_br->br_id);
+ AuDebugOn(bindex < 0);
+ if (bindex != finfo->fi_btop)
+ au_set_fbtop(file, bindex);
+ } else {
+ err = au_fidir_realloc(finfo, nbr, /*may_shrink*/0);
+ if (unlikely(err))
+ goto out;
+ au_do_refresh_dir(file);
+ }
+
+ err = 0;
+ need_reopen = 1;
+ if (!au_test_mmapped(file))
+ err = au_file_refresh_by_inode(file, &need_reopen);
+ if (finfo->fi_hdir)
+ /* harmless if err */
+ au_fidir_realloc(finfo, nbr, /*may_shrink*/1);
+ if (!err && need_reopen && !d_unlinked(dentry))
+ err = reopen(file);
+ if (!err) {
+ au_update_figen(file);
+ goto out; /* success */
+ }
+
+ /* error, close all lower files */
+ if (finfo->fi_hdir) {
+ bbot = au_fbbot_dir(file);
+ for (bindex = au_fbtop(file); bindex <= bbot; bindex++)
+ au_set_h_fptr(file, bindex, NULL);
+ }
+
+out:
+ return err;
+}
+
+/* common function to regular file and dir */
+int au_reval_and_lock_fdi(struct file *file, int (*reopen)(struct file *file),
+ int wlock, unsigned int fi_lsc)
+{
+ int err;
+ unsigned int sigen, figen;
+ aufs_bindex_t btop;
+ unsigned char pseudo_link;
+ struct dentry *dentry;
+ struct inode *inode;
+
+ err = 0;
+ dentry = file->f_path.dentry;
+ inode = d_inode(dentry);
+ sigen = au_sigen(dentry->d_sb);
+ fi_write_lock_nested(file, fi_lsc);
+ figen = au_figen(file);
+ if (!fi_lsc)
+ di_write_lock_child(dentry);
+ else
+ di_write_lock_child2(dentry);
+ btop = au_dbtop(dentry);
+ pseudo_link = (btop != au_ibtop(inode));
+ if (sigen == figen && !pseudo_link && au_fbtop(file) == btop) {
+ if (!wlock) {
+ di_downgrade_lock(dentry, AuLock_IR);
+ fi_downgrade_lock(file);
+ }
+ goto out; /* success */
+ }
+
+ AuDbg("sigen %d, figen %d\n", sigen, figen);
+ if (au_digen_test(dentry, sigen)) {
+ err = au_reval_dpath(dentry, sigen);
+ AuDebugOn(!err && au_digen_test(dentry, sigen));
+ }
+
+ if (!err)
+ err = refresh_file(file, reopen);
+ if (!err) {
+ if (!wlock) {
+ di_downgrade_lock(dentry, AuLock_IR);
+ fi_downgrade_lock(file);
+ }
+ } else {
+ di_write_unlock(dentry);
+ fi_write_unlock(file);
+ }
+
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* cf. aufs_nopage() */
+/* for madvise(2) */
+static int aufs_readpage(struct file *file __maybe_unused, struct page *page)
+{
+ unlock_page(page);
+ return 0;
+}
+
+/* it will never be called, but necessary to support O_DIRECT */
+static ssize_t aufs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
+{ BUG(); return 0; }
+
+/* they will never be called. */
+#ifdef CONFIG_AUFS_DEBUG
+static int aufs_write_begin(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata)
+{ AuUnsupport(); return 0; }
+static int aufs_write_end(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned copied,
+ struct page *page, void *fsdata)
+{ AuUnsupport(); return 0; }
+static int aufs_writepage(struct page *page, struct writeback_control *wbc)
+{ AuUnsupport(); return 0; }
+
+static int aufs_set_page_dirty(struct page *page)
+{ AuUnsupport(); return 0; }
+static void aufs_invalidatepage(struct page *page, unsigned int offset,
+ unsigned int length)
+{ AuUnsupport(); }
+static int aufs_releasepage(struct page *page, gfp_t gfp)
+{ AuUnsupport(); return 0; }
+#if 0 /* called by memory compaction regardless file */
+static int aufs_migratepage(struct address_space *mapping, struct page *newpage,
+ struct page *page, enum migrate_mode mode)
+{ AuUnsupport(); return 0; }
+#endif
+static bool aufs_isolate_page(struct page *page, isolate_mode_t mode)
+{ AuUnsupport(); return true; }
+static void aufs_putback_page(struct page *page)
+{ AuUnsupport(); }
+static int aufs_launder_page(struct page *page)
+{ AuUnsupport(); return 0; }
+static int aufs_is_partially_uptodate(struct page *page,
+ unsigned long from,
+ unsigned long count)
+{ AuUnsupport(); return 0; }
+static void aufs_is_dirty_writeback(struct page *page, bool *dirty,
+ bool *writeback)
+{ AuUnsupport(); }
+static int aufs_error_remove_page(struct address_space *mapping,
+ struct page *page)
+{ AuUnsupport(); return 0; }
+static int aufs_swap_activate(struct swap_info_struct *sis, struct file *file,
+ sector_t *span)
+{ AuUnsupport(); return 0; }
+static void aufs_swap_deactivate(struct file *file)
+{ AuUnsupport(); }
+#endif /* CONFIG_AUFS_DEBUG */
+
+const struct address_space_operations aufs_aop = {
+ .readpage = aufs_readpage,
+ .direct_IO = aufs_direct_IO,
+#ifdef CONFIG_AUFS_DEBUG
+ .writepage = aufs_writepage,
+ /* no writepages, because of writepage */
+ .set_page_dirty = aufs_set_page_dirty,
+ /* no readpages, because of readpage */
+ .write_begin = aufs_write_begin,
+ .write_end = aufs_write_end,
+ /* no bmap, no block device */
+ .invalidatepage = aufs_invalidatepage,
+ .releasepage = aufs_releasepage,
+ /* is fallback_migrate_page ok? */
+ /* .migratepage = aufs_migratepage, */
+ .isolate_page = aufs_isolate_page,
+ .putback_page = aufs_putback_page,
+ .launder_page = aufs_launder_page,
+ .is_partially_uptodate = aufs_is_partially_uptodate,
+ .is_dirty_writeback = aufs_is_dirty_writeback,
+ .error_remove_page = aufs_error_remove_page,
+ .swap_activate = aufs_swap_activate,
+ .swap_deactivate = aufs_swap_deactivate
+#endif /* CONFIG_AUFS_DEBUG */
+};
diff --git a/fs/aufs/file.h b/fs/aufs/file.h
new file mode 100644
index 0000000000..c679a19df5
--- /dev/null
+++ b/fs/aufs/file.h
@@ -0,0 +1,342 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * file operations
+ */
+
+#ifndef __AUFS_FILE_H__
+#define __AUFS_FILE_H__
+
+#ifdef __KERNEL__
+
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/mm_types.h>
+#include <linux/poll.h>
+#include "rwsem.h"
+
+struct au_branch;
+struct au_hfile {
+ struct file *hf_file;
+ struct au_branch *hf_br;
+};
+
+struct au_vdir;
+struct au_fidir {
+ aufs_bindex_t fd_bbot;
+ aufs_bindex_t fd_nent;
+ struct au_vdir *fd_vdir_cache;
+ struct au_hfile fd_hfile[];
+};
+
+static inline int au_fidir_sz(int nent)
+{
+ AuDebugOn(nent < 0);
+ return sizeof(struct au_fidir) + sizeof(struct au_hfile) * nent;
+}
+
+struct au_finfo {
+ atomic_t fi_generation;
+
+ struct au_rwsem fi_rwsem;
+ aufs_bindex_t fi_btop;
+
+ /* do not union them */
+ struct { /* for non-dir */
+ struct au_hfile fi_htop;
+ atomic_t fi_mmapped;
+ };
+ struct au_fidir *fi_hdir; /* for dir only */
+
+ struct hlist_bl_node fi_hlist;
+ struct file *fi_file; /* very ugly */
+ struct rcu_head rcu;
+} ____cacheline_aligned_in_smp;
+
+/* ---------------------------------------------------------------------- */
+
+/* file.c */
+extern const struct address_space_operations aufs_aop;
+unsigned int au_file_roflags(unsigned int flags);
+struct file *au_h_open(struct dentry *dentry, aufs_bindex_t bindex, int flags,
+ struct file *file, int force_wr);
+struct au_do_open_args {
+ int aopen;
+ int (*open)(struct file *file, int flags,
+ struct file *h_file);
+ struct au_fidir *fidir;
+ struct file *h_file;
+};
+int au_do_open(struct file *file, struct au_do_open_args *args);
+int au_reopen_nondir(struct file *file);
+struct au_pin;
+int au_ready_to_write(struct file *file, loff_t len, struct au_pin *pin);
+int au_reval_and_lock_fdi(struct file *file, int (*reopen)(struct file *file),
+ int wlock, unsigned int fi_lsc);
+int au_do_flush(struct file *file, fl_owner_t id,
+ int (*flush)(struct file *file, fl_owner_t id));
+
+/* poll.c */
+#ifdef CONFIG_AUFS_POLL
+__poll_t aufs_poll(struct file *file, struct poll_table_struct *pt);
+#endif
+
+#ifdef CONFIG_AUFS_BR_HFSPLUS
+/* hfsplus.c */
+struct file *au_h_open_pre(struct dentry *dentry, aufs_bindex_t bindex,
+ int force_wr);
+void au_h_open_post(struct dentry *dentry, aufs_bindex_t bindex,
+ struct file *h_file);
+#else
+AuStub(struct file *, au_h_open_pre, return NULL, struct dentry *dentry,
+ aufs_bindex_t bindex, int force_wr)
+AuStubVoid(au_h_open_post, struct dentry *dentry, aufs_bindex_t bindex,
+ struct file *h_file);
+#endif
+
+/* f_op.c */
+extern const struct file_operations aufs_file_fop;
+int au_do_open_nondir(struct file *file, int flags, struct file *h_file);
+int aufs_release_nondir(struct inode *inode __maybe_unused, struct file *file);
+struct file *au_read_pre(struct file *file, int keep_fi, unsigned int lsc);
+
+/* finfo.c */
+void au_hfput(struct au_hfile *hf, int execed);
+void au_set_h_fptr(struct file *file, aufs_bindex_t bindex,
+ struct file *h_file);
+
+void au_update_figen(struct file *file);
+struct au_fidir *au_fidir_alloc(struct super_block *sb);
+int au_fidir_realloc(struct au_finfo *finfo, int nbr, int may_shrink);
+
+void au_fi_init_once(void *_fi);
+void au_finfo_fin(struct file *file);
+int au_finfo_init(struct file *file, struct au_fidir *fidir);
+
+/* ioctl.c */
+long aufs_ioctl_nondir(struct file *file, unsigned int cmd, unsigned long arg);
+#ifdef CONFIG_COMPAT
+long aufs_compat_ioctl_dir(struct file *file, unsigned int cmd,
+ unsigned long arg);
+long aufs_compat_ioctl_nondir(struct file *file, unsigned int cmd,
+ unsigned long arg);
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct au_finfo *au_fi(struct file *file)
+{
+ return file->private_data;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#define fi_read_lock(f) au_rw_read_lock(&au_fi(f)->fi_rwsem)
+#define fi_write_lock(f) au_rw_write_lock(&au_fi(f)->fi_rwsem)
+#define fi_read_trylock(f) au_rw_read_trylock(&au_fi(f)->fi_rwsem)
+#define fi_write_trylock(f) au_rw_write_trylock(&au_fi(f)->fi_rwsem)
+/*
+#define fi_read_trylock_nested(f) \
+ au_rw_read_trylock_nested(&au_fi(f)->fi_rwsem)
+#define fi_write_trylock_nested(f) \
+ au_rw_write_trylock_nested(&au_fi(f)->fi_rwsem)
+*/
+
+#define fi_read_unlock(f) au_rw_read_unlock(&au_fi(f)->fi_rwsem)
+#define fi_write_unlock(f) au_rw_write_unlock(&au_fi(f)->fi_rwsem)
+#define fi_downgrade_lock(f) au_rw_dgrade_lock(&au_fi(f)->fi_rwsem)
+
+/* lock subclass for finfo */
+enum {
+ AuLsc_FI_1,
+ AuLsc_FI_2
+};
+
+static inline void fi_read_lock_nested(struct file *f, unsigned int lsc)
+{
+ au_rw_read_lock_nested(&au_fi(f)->fi_rwsem, lsc);
+}
+
+static inline void fi_write_lock_nested(struct file *f, unsigned int lsc)
+{
+ au_rw_write_lock_nested(&au_fi(f)->fi_rwsem, lsc);
+}
+
+/*
+ * fi_read_lock_1, fi_write_lock_1,
+ * fi_read_lock_2, fi_write_lock_2
+ */
+#define AuReadLockFunc(name) \
+static inline void fi_read_lock_##name(struct file *f) \
+{ fi_read_lock_nested(f, AuLsc_FI_##name); }
+
+#define AuWriteLockFunc(name) \
+static inline void fi_write_lock_##name(struct file *f) \
+{ fi_write_lock_nested(f, AuLsc_FI_##name); }
+
+#define AuRWLockFuncs(name) \
+ AuReadLockFunc(name) \
+ AuWriteLockFunc(name)
+
+AuRWLockFuncs(1);
+AuRWLockFuncs(2);
+
+#undef AuReadLockFunc
+#undef AuWriteLockFunc
+#undef AuRWLockFuncs
+
+#define FiMustNoWaiters(f) AuRwMustNoWaiters(&au_fi(f)->fi_rwsem)
+#define FiMustAnyLock(f) AuRwMustAnyLock(&au_fi(f)->fi_rwsem)
+#define FiMustWriteLock(f) AuRwMustWriteLock(&au_fi(f)->fi_rwsem)
+
+/* ---------------------------------------------------------------------- */
+
+/* todo: hard/soft set? */
+static inline aufs_bindex_t au_fbtop(struct file *file)
+{
+ FiMustAnyLock(file);
+ return au_fi(file)->fi_btop;
+}
+
+static inline aufs_bindex_t au_fbbot_dir(struct file *file)
+{
+ FiMustAnyLock(file);
+ AuDebugOn(!au_fi(file)->fi_hdir);
+ return au_fi(file)->fi_hdir->fd_bbot;
+}
+
+static inline struct au_vdir *au_fvdir_cache(struct file *file)
+{
+ FiMustAnyLock(file);
+ AuDebugOn(!au_fi(file)->fi_hdir);
+ return au_fi(file)->fi_hdir->fd_vdir_cache;
+}
+
+static inline void au_set_fbtop(struct file *file, aufs_bindex_t bindex)
+{
+ FiMustWriteLock(file);
+ au_fi(file)->fi_btop = bindex;
+}
+
+static inline void au_set_fbbot_dir(struct file *file, aufs_bindex_t bindex)
+{
+ FiMustWriteLock(file);
+ AuDebugOn(!au_fi(file)->fi_hdir);
+ au_fi(file)->fi_hdir->fd_bbot = bindex;
+}
+
+static inline void au_set_fvdir_cache(struct file *file,
+ struct au_vdir *vdir_cache)
+{
+ FiMustWriteLock(file);
+ AuDebugOn(!au_fi(file)->fi_hdir);
+ au_fi(file)->fi_hdir->fd_vdir_cache = vdir_cache;
+}
+
+static inline struct file *au_hf_top(struct file *file)
+{
+ FiMustAnyLock(file);
+ AuDebugOn(au_fi(file)->fi_hdir);
+ return au_fi(file)->fi_htop.hf_file;
+}
+
+static inline struct file *au_hf_dir(struct file *file, aufs_bindex_t bindex)
+{
+ FiMustAnyLock(file);
+ AuDebugOn(!au_fi(file)->fi_hdir);
+ return au_fi(file)->fi_hdir->fd_hfile[0 + bindex].hf_file;
+}
+
+/* todo: memory barrier? */
+static inline unsigned int au_figen(struct file *f)
+{
+ return atomic_read(&au_fi(f)->fi_generation);
+}
+
+static inline void au_set_mmapped(struct file *f)
+{
+ if (atomic_inc_return(&au_fi(f)->fi_mmapped))
+ return;
+ pr_warn("fi_mmapped wrapped around\n");
+ while (!atomic_inc_return(&au_fi(f)->fi_mmapped))
+ ;
+}
+
+static inline void au_unset_mmapped(struct file *f)
+{
+ atomic_dec(&au_fi(f)->fi_mmapped);
+}
+
+static inline int au_test_mmapped(struct file *f)
+{
+ return atomic_read(&au_fi(f)->fi_mmapped);
+}
+
+/* customize vma->vm_file */
+
+static inline void au_do_vm_file_reset(struct vm_area_struct *vma,
+ struct file *file)
+{
+ struct file *f;
+
+ f = vma->vm_file;
+ get_file(file);
+ vma->vm_file = file;
+ fput(f);
+}
+
+#ifdef CONFIG_MMU
+#define AuDbgVmRegion(file, vma) do {} while (0)
+
+static inline void au_vm_file_reset(struct vm_area_struct *vma,
+ struct file *file)
+{
+ au_do_vm_file_reset(vma, file);
+}
+#else
+#define AuDbgVmRegion(file, vma) \
+ AuDebugOn((vma)->vm_region && (vma)->vm_region->vm_file != (file))
+
+static inline void au_vm_file_reset(struct vm_area_struct *vma,
+ struct file *file)
+{
+ struct file *f;
+
+ au_do_vm_file_reset(vma, file);
+ f = vma->vm_region->vm_file;
+ get_file(file);
+ vma->vm_region->vm_file = file;
+ fput(f);
+}
+#endif /* CONFIG_MMU */
+
+/* handle vma->vm_prfile */
+static inline void au_vm_prfile_set(struct vm_area_struct *vma,
+ struct file *file)
+{
+ get_file(file);
+ vma->vm_prfile = file;
+#ifndef CONFIG_MMU
+ get_file(file);
+ vma->vm_region->vm_prfile = file;
+#endif
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_FILE_H__ */
diff --git a/fs/aufs/finfo.c b/fs/aufs/finfo.c
new file mode 100644
index 0000000000..448c5e9cd8
--- /dev/null
+++ b/fs/aufs/finfo.c
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * file private data
+ */
+
+#include "aufs.h"
+
+void au_hfput(struct au_hfile *hf, int execed)
+{
+ if (execed)
+ allow_write_access(hf->hf_file);
+ fput(hf->hf_file);
+ hf->hf_file = NULL;
+ au_lcnt_dec(&hf->hf_br->br_nfiles);
+ hf->hf_br = NULL;
+}
+
+void au_set_h_fptr(struct file *file, aufs_bindex_t bindex, struct file *val)
+{
+ struct au_finfo *finfo = au_fi(file);
+ struct au_hfile *hf;
+ struct au_fidir *fidir;
+
+ fidir = finfo->fi_hdir;
+ if (!fidir) {
+ AuDebugOn(finfo->fi_btop != bindex);
+ hf = &finfo->fi_htop;
+ } else
+ hf = fidir->fd_hfile + bindex;
+
+ if (hf && hf->hf_file)
+ au_hfput(hf, vfsub_file_execed(file));
+ if (val) {
+ FiMustWriteLock(file);
+ AuDebugOn(IS_ERR_OR_NULL(file->f_path.dentry));
+ hf->hf_file = val;
+ hf->hf_br = au_sbr(file->f_path.dentry->d_sb, bindex);
+ }
+}
+
+void au_update_figen(struct file *file)
+{
+ atomic_set(&au_fi(file)->fi_generation, au_digen(file->f_path.dentry));
+ /* smp_mb(); */ /* atomic_set */
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct au_fidir *au_fidir_alloc(struct super_block *sb)
+{
+ struct au_fidir *fidir;
+ int nbr;
+
+ nbr = au_sbbot(sb) + 1;
+ if (nbr < 2)
+ nbr = 2; /* initial allocate for 2 branches */
+ fidir = kzalloc(au_fidir_sz(nbr), GFP_NOFS);
+ if (fidir) {
+ fidir->fd_bbot = -1;
+ fidir->fd_nent = nbr;
+ }
+
+ return fidir;
+}
+
+int au_fidir_realloc(struct au_finfo *finfo, int nbr, int may_shrink)
+{
+ int err;
+ struct au_fidir *fidir, *p;
+
+ AuRwMustWriteLock(&finfo->fi_rwsem);
+ fidir = finfo->fi_hdir;
+ AuDebugOn(!fidir);
+
+ err = -ENOMEM;
+ p = au_kzrealloc(fidir, au_fidir_sz(fidir->fd_nent), au_fidir_sz(nbr),
+ GFP_NOFS, may_shrink);
+ if (p) {
+ p->fd_nent = nbr;
+ finfo->fi_hdir = p;
+ err = 0;
+ }
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_finfo_fin(struct file *file)
+{
+ struct au_finfo *finfo;
+
+ au_lcnt_dec(&au_sbi(file->f_path.dentry->d_sb)->si_nfiles);
+
+ finfo = au_fi(file);
+ AuDebugOn(finfo->fi_hdir);
+ AuRwDestroy(&finfo->fi_rwsem);
+ au_cache_free_finfo(finfo);
+}
+
+void au_fi_init_once(void *_finfo)
+{
+ struct au_finfo *finfo = _finfo;
+
+ au_rw_init(&finfo->fi_rwsem);
+}
+
+int au_finfo_init(struct file *file, struct au_fidir *fidir)
+{
+ int err;
+ struct au_finfo *finfo;
+ struct dentry *dentry;
+
+ err = -ENOMEM;
+ dentry = file->f_path.dentry;
+ finfo = au_cache_alloc_finfo();
+ if (unlikely(!finfo))
+ goto out;
+
+ err = 0;
+ au_lcnt_inc(&au_sbi(dentry->d_sb)->si_nfiles);
+ au_rw_write_lock(&finfo->fi_rwsem);
+ finfo->fi_btop = -1;
+ finfo->fi_hdir = fidir;
+ atomic_set(&finfo->fi_generation, au_digen(dentry));
+ /* smp_mb(); */ /* atomic_set */
+
+ file->private_data = finfo;
+
+out:
+ return err;
+}
diff --git a/fs/aufs/fstype.h b/fs/aufs/fstype.h
new file mode 100644
index 0000000000..510bd87e94
--- /dev/null
+++ b/fs/aufs/fstype.h
@@ -0,0 +1,401 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * judging filesystem type
+ */
+
+#ifndef __AUFS_FSTYPE_H__
+#define __AUFS_FSTYPE_H__
+
+#ifdef __KERNEL__
+
+#include <linux/fs.h>
+#include <linux/magic.h>
+#include <linux/nfs_fs.h>
+#include <linux/romfs_fs.h>
+
+static inline int au_test_aufs(struct super_block *sb)
+{
+ return sb->s_magic == AUFS_SUPER_MAGIC;
+}
+
+static inline const char *au_sbtype(struct super_block *sb)
+{
+ return sb->s_type->name;
+}
+
+static inline int au_test_iso9660(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_ISO9660_FS)
+ return sb->s_magic == ISOFS_SUPER_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_romfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_ROMFS_FS)
+ return sb->s_magic == ROMFS_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_cramfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_CRAMFS)
+ return sb->s_magic == CRAMFS_MAGIC;
+#endif
+ return 0;
+}
+
+static inline int au_test_nfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_NFS_FS)
+ return sb->s_magic == NFS_SUPER_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_fuse(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_FUSE_FS)
+ return sb->s_magic == FUSE_SUPER_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_xfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_XFS_FS)
+ return sb->s_magic == XFS_SB_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_tmpfs(struct super_block *sb __maybe_unused)
+{
+#ifdef CONFIG_TMPFS
+ return sb->s_magic == TMPFS_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_ecryptfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_ECRYPT_FS)
+ return !strcmp(au_sbtype(sb), "ecryptfs");
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_ramfs(struct super_block *sb)
+{
+ return sb->s_magic == RAMFS_MAGIC;
+}
+
+static inline int au_test_ubifs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_UBIFS_FS)
+ return sb->s_magic == UBIFS_SUPER_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_procfs(struct super_block *sb __maybe_unused)
+{
+#ifdef CONFIG_PROC_FS
+ return sb->s_magic == PROC_SUPER_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_sysfs(struct super_block *sb __maybe_unused)
+{
+#ifdef CONFIG_SYSFS
+ return sb->s_magic == SYSFS_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_configfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_CONFIGFS_FS)
+ return sb->s_magic == CONFIGFS_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_minix(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_MINIX_FS)
+ return sb->s_magic == MINIX3_SUPER_MAGIC
+ || sb->s_magic == MINIX2_SUPER_MAGIC
+ || sb->s_magic == MINIX2_SUPER_MAGIC2
+ || sb->s_magic == MINIX_SUPER_MAGIC
+ || sb->s_magic == MINIX_SUPER_MAGIC2;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_fat(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_FAT_FS)
+ return sb->s_magic == MSDOS_SUPER_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_msdos(struct super_block *sb)
+{
+ return au_test_fat(sb);
+}
+
+static inline int au_test_vfat(struct super_block *sb)
+{
+ return au_test_fat(sb);
+}
+
+static inline int au_test_securityfs(struct super_block *sb __maybe_unused)
+{
+#ifdef CONFIG_SECURITYFS
+ return sb->s_magic == SECURITYFS_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_squashfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_SQUASHFS)
+ return sb->s_magic == SQUASHFS_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_btrfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_BTRFS_FS)
+ return sb->s_magic == BTRFS_SUPER_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_xenfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_XENFS)
+ return sb->s_magic == XENFS_SUPER_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_debugfs(struct super_block *sb __maybe_unused)
+{
+#ifdef CONFIG_DEBUG_FS
+ return sb->s_magic == DEBUGFS_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_nilfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_NILFS)
+ return sb->s_magic == NILFS_SUPER_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+static inline int au_test_hfsplus(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_HFSPLUS_FS)
+ return sb->s_magic == HFSPLUS_SUPER_MAGIC;
+#else
+ return 0;
+#endif
+}
+
+/* ---------------------------------------------------------------------- */
+/*
+ * they can't be an aufs branch.
+ */
+static inline int au_test_fs_unsuppoted(struct super_block *sb)
+{
+ return
+#ifndef CONFIG_AUFS_BR_RAMFS
+ au_test_ramfs(sb) ||
+#endif
+ au_test_procfs(sb)
+ || au_test_sysfs(sb)
+ || au_test_configfs(sb)
+ || au_test_debugfs(sb)
+ || au_test_securityfs(sb)
+ || au_test_xenfs(sb)
+ || au_test_ecryptfs(sb)
+ /* || !strcmp(au_sbtype(sb), "unionfs") */
+ || au_test_aufs(sb); /* will be supported in next version */
+}
+
+static inline int au_test_fs_remote(struct super_block *sb)
+{
+ return !au_test_tmpfs(sb)
+#ifdef CONFIG_AUFS_BR_RAMFS
+ && !au_test_ramfs(sb)
+#endif
+ && !(sb->s_type->fs_flags & FS_REQUIRES_DEV);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * Note: these functions (below) are created after reading ->getattr() in all
+ * filesystems under linux/fs. it means we have to do so in every update...
+ */
+
+/*
+ * some filesystems require getattr to refresh the inode attributes before
+ * referencing.
+ * in most cases, we can rely on the inode attribute in NFS (or every remote fs)
+ * and leave the work for d_revalidate()
+ */
+static inline int au_test_fs_refresh_iattr(struct super_block *sb)
+{
+ return au_test_nfs(sb)
+ || au_test_fuse(sb)
+ /* || au_test_btrfs(sb) */ /* untested */
+ ;
+}
+
+/*
+ * filesystems which don't maintain i_size or i_blocks.
+ */
+static inline int au_test_fs_bad_iattr_size(struct super_block *sb)
+{
+ return au_test_xfs(sb)
+ || au_test_btrfs(sb)
+ || au_test_ubifs(sb)
+ || au_test_hfsplus(sb) /* maintained, but incorrect */
+ /* || au_test_minix(sb) */ /* untested */
+ ;
+}
+
+/*
+ * filesystems which don't store the correct value in some of their inode
+ * attributes.
+ */
+static inline int au_test_fs_bad_iattr(struct super_block *sb)
+{
+ return au_test_fs_bad_iattr_size(sb)
+ || au_test_fat(sb)
+ || au_test_msdos(sb)
+ || au_test_vfat(sb);
+}
+
+/* they don't check i_nlink in link(2) */
+static inline int au_test_fs_no_limit_nlink(struct super_block *sb)
+{
+ return au_test_tmpfs(sb)
+#ifdef CONFIG_AUFS_BR_RAMFS
+ || au_test_ramfs(sb)
+#endif
+ || au_test_ubifs(sb)
+ || au_test_hfsplus(sb);
+}
+
+/*
+ * filesystems which sets S_NOATIME and S_NOCMTIME.
+ */
+static inline int au_test_fs_notime(struct super_block *sb)
+{
+ return au_test_nfs(sb)
+ || au_test_fuse(sb)
+ || au_test_ubifs(sb)
+ ;
+}
+
+/* temporary support for i#1 in cramfs */
+static inline int au_test_fs_unique_ino(struct inode *inode)
+{
+ if (au_test_cramfs(inode->i_sb))
+ return inode->i_ino != 1;
+ return 1;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * the filesystem where the xino files placed must support i/o after unlink and
+ * maintain i_size and i_blocks.
+ */
+static inline int au_test_fs_bad_xino(struct super_block *sb)
+{
+ return au_test_fs_remote(sb)
+ || au_test_fs_bad_iattr_size(sb)
+ /* don't want unnecessary work for xino */
+ || au_test_aufs(sb)
+ || au_test_ecryptfs(sb)
+ || au_test_nilfs(sb);
+}
+
+static inline int au_test_fs_trunc_xino(struct super_block *sb)
+{
+ return au_test_tmpfs(sb)
+ || au_test_ramfs(sb);
+}
+
+/*
+ * test if the @sb is real-readonly.
+ */
+static inline int au_test_fs_rr(struct super_block *sb)
+{
+ return au_test_squashfs(sb)
+ || au_test_iso9660(sb)
+ || au_test_cramfs(sb)
+ || au_test_romfs(sb);
+}
+
+/*
+ * test if the @inode is nfs with 'noacl' option
+ * NFS always sets SB_POSIXACL regardless its mount option 'noacl.'
+ */
+static inline int au_test_nfs_noacl(struct inode *inode)
+{
+ return au_test_nfs(inode->i_sb)
+ /* && IS_POSIXACL(inode) */
+ && !nfs_server_capable(inode, NFS_CAP_ACLS);
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_FSTYPE_H__ */
diff --git a/fs/aufs/hbl.h b/fs/aufs/hbl.h
new file mode 100644
index 0000000000..6db65b16b0
--- /dev/null
+++ b/fs/aufs/hbl.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2017-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * helpers for hlist_bl.h
+ */
+
+#ifndef __AUFS_HBL_H__
+#define __AUFS_HBL_H__
+
+#ifdef __KERNEL__
+
+#include <linux/list_bl.h>
+
+static inline void au_hbl_add(struct hlist_bl_node *node,
+ struct hlist_bl_head *hbl)
+{
+ hlist_bl_lock(hbl);
+ hlist_bl_add_head(node, hbl);
+ hlist_bl_unlock(hbl);
+}
+
+static inline void au_hbl_del(struct hlist_bl_node *node,
+ struct hlist_bl_head *hbl)
+{
+ hlist_bl_lock(hbl);
+ hlist_bl_del(node);
+ hlist_bl_unlock(hbl);
+}
+
+#define au_hbl_for_each(pos, head) \
+ for (pos = hlist_bl_first(head); \
+ pos; \
+ pos = pos->next)
+
+static inline unsigned long au_hbl_count(struct hlist_bl_head *hbl)
+{
+ unsigned long cnt;
+ struct hlist_bl_node *pos;
+
+ cnt = 0;
+ hlist_bl_lock(hbl);
+ au_hbl_for_each(pos, hbl)
+ cnt++;
+ hlist_bl_unlock(hbl);
+ return cnt;
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_HBL_H__ */
diff --git a/fs/aufs/hfsnotify.c b/fs/aufs/hfsnotify.c
new file mode 100644
index 0000000000..7945ae3ca0
--- /dev/null
+++ b/fs/aufs/hfsnotify.c
@@ -0,0 +1,288 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * fsnotify for the lower directories
+ */
+
+#include "aufs.h"
+
+/* FS_IN_IGNORED is unnecessary */
+static const __u32 AuHfsnMask = (FS_MOVED_TO | FS_MOVED_FROM | FS_DELETE
+ | FS_CREATE | FS_EVENT_ON_CHILD);
+static DECLARE_WAIT_QUEUE_HEAD(au_hfsn_wq);
+static __cacheline_aligned_in_smp atomic64_t au_hfsn_ifree = ATOMIC64_INIT(0);
+
+static void au_hfsn_free_mark(struct fsnotify_mark *mark)
+{
+ struct au_hnotify *hn = container_of(mark, struct au_hnotify,
+ hn_mark);
+ /* AuDbg("here\n"); */
+ au_cache_free_hnotify(hn);
+ smp_mb__before_atomic(); /* for atomic64_dec */
+ if (atomic64_dec_and_test(&au_hfsn_ifree))
+ wake_up(&au_hfsn_wq);
+}
+
+static int au_hfsn_alloc(struct au_hinode *hinode)
+{
+ int err;
+ struct au_hnotify *hn;
+ struct super_block *sb;
+ struct au_branch *br;
+ struct fsnotify_mark *mark;
+ aufs_bindex_t bindex;
+
+ hn = hinode->hi_notify;
+ sb = hn->hn_aufs_inode->i_sb;
+ bindex = au_br_index(sb, hinode->hi_id);
+ br = au_sbr(sb, bindex);
+ AuDebugOn(!br->br_hfsn);
+
+ mark = &hn->hn_mark;
+ fsnotify_init_mark(mark, br->br_hfsn->hfsn_group);
+ mark->mask = AuHfsnMask;
+ /*
+ * by udba rename or rmdir, aufs assign a new inode to the known
+ * h_inode, so specify 1 to allow dups.
+ */
+ lockdep_off();
+ err = fsnotify_add_inode_mark(mark, hinode->hi_inode, /*allow_dups*/1);
+ lockdep_on();
+
+ return err;
+}
+
+static int au_hfsn_free(struct au_hinode *hinode, struct au_hnotify *hn)
+{
+ struct fsnotify_mark *mark;
+ unsigned long long ull;
+ struct fsnotify_group *group;
+
+ ull = atomic64_inc_return(&au_hfsn_ifree);
+ BUG_ON(!ull);
+
+ mark = &hn->hn_mark;
+ spin_lock(&mark->lock);
+ group = mark->group;
+ fsnotify_get_group(group);
+ spin_unlock(&mark->lock);
+ lockdep_off();
+ fsnotify_destroy_mark(mark, group);
+ fsnotify_put_mark(mark);
+ fsnotify_put_group(group);
+ lockdep_on();
+
+ /* free hn by myself */
+ return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void au_hfsn_ctl(struct au_hinode *hinode, int do_set)
+{
+ struct fsnotify_mark *mark;
+
+ mark = &hinode->hi_notify->hn_mark;
+ spin_lock(&mark->lock);
+ if (do_set) {
+ AuDebugOn(mark->mask & AuHfsnMask);
+ mark->mask |= AuHfsnMask;
+ } else {
+ AuDebugOn(!(mark->mask & AuHfsnMask));
+ mark->mask &= ~AuHfsnMask;
+ }
+ spin_unlock(&mark->lock);
+ /* fsnotify_recalc_inode_mask(hinode->hi_inode); */
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* #define AuDbgHnotify */
+#ifdef AuDbgHnotify
+static char *au_hfsn_name(u32 mask)
+{
+#ifdef CONFIG_AUFS_DEBUG
+#define test_ret(flag) \
+ do { \
+ if (mask & flag) \
+ return #flag; \
+ } while (0)
+ test_ret(FS_ACCESS);
+ test_ret(FS_MODIFY);
+ test_ret(FS_ATTRIB);
+ test_ret(FS_CLOSE_WRITE);
+ test_ret(FS_CLOSE_NOWRITE);
+ test_ret(FS_OPEN);
+ test_ret(FS_MOVED_FROM);
+ test_ret(FS_MOVED_TO);
+ test_ret(FS_CREATE);
+ test_ret(FS_DELETE);
+ test_ret(FS_DELETE_SELF);
+ test_ret(FS_MOVE_SELF);
+ test_ret(FS_UNMOUNT);
+ test_ret(FS_Q_OVERFLOW);
+ test_ret(FS_IN_IGNORED);
+ test_ret(FS_ISDIR);
+ test_ret(FS_IN_ONESHOT);
+ test_ret(FS_EVENT_ON_CHILD);
+ return "";
+#undef test_ret
+#else
+ return "??";
+#endif
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+static void au_hfsn_free_group(struct fsnotify_group *group)
+{
+ struct au_br_hfsnotify *hfsn = group->private;
+
+ /* AuDbg("here\n"); */
+ au_kfree_try_rcu(hfsn);
+}
+
+static int au_hfsn_handle_event(struct fsnotify_group *group,
+ struct inode *inode,
+ u32 mask, const void *data, int data_type,
+ const struct qstr *file_name, u32 cookie,
+ struct fsnotify_iter_info *iter_info)
+{
+ int err;
+ struct au_hnotify *hnotify;
+ struct inode *h_dir, *h_inode;
+ struct fsnotify_mark *inode_mark;
+
+ AuDebugOn(data_type != FSNOTIFY_EVENT_INODE);
+
+ err = 0;
+ /* if FS_UNMOUNT happens, there must be another bug */
+ AuDebugOn(mask & FS_UNMOUNT);
+ if (mask & (FS_IN_IGNORED | FS_UNMOUNT))
+ goto out;
+
+ h_dir = inode;
+ h_inode = NULL;
+#ifdef AuDbgHnotify
+ au_debug_on();
+ if (1 || h_child_qstr.len != sizeof(AUFS_XINO_FNAME) - 1
+ || strncmp(h_child_qstr.name, AUFS_XINO_FNAME, h_child_qstr.len)) {
+ AuDbg("i%lu, mask 0x%x %s, hcname %.*s, hi%lu\n",
+ h_dir->i_ino, mask, au_hfsn_name(mask),
+ AuLNPair(&h_child_qstr), h_inode ? h_inode->i_ino : 0);
+ /* WARN_ON(1); */
+ }
+ au_debug_off();
+#endif
+
+ inode_mark = fsnotify_iter_inode_mark(iter_info);
+ AuDebugOn(!inode_mark);
+ hnotify = container_of(inode_mark, struct au_hnotify, hn_mark);
+ err = au_hnotify(h_dir, hnotify, mask, file_name, h_inode);
+
+out:
+ return err;
+}
+
+static struct fsnotify_ops au_hfsn_ops = {
+ .handle_event = au_hfsn_handle_event,
+ .free_group_priv = au_hfsn_free_group,
+ .free_mark = au_hfsn_free_mark
+};
+
+/* ---------------------------------------------------------------------- */
+
+static void au_hfsn_fin_br(struct au_branch *br)
+{
+ struct au_br_hfsnotify *hfsn;
+
+ hfsn = br->br_hfsn;
+ if (hfsn) {
+ lockdep_off();
+ fsnotify_put_group(hfsn->hfsn_group);
+ lockdep_on();
+ }
+}
+
+static int au_hfsn_init_br(struct au_branch *br, int perm)
+{
+ int err;
+ struct fsnotify_group *group;
+ struct au_br_hfsnotify *hfsn;
+
+ err = 0;
+ br->br_hfsn = NULL;
+ if (!au_br_hnotifyable(perm))
+ goto out;
+
+ err = -ENOMEM;
+ hfsn = kmalloc(sizeof(*hfsn), GFP_NOFS);
+ if (unlikely(!hfsn))
+ goto out;
+
+ err = 0;
+ group = fsnotify_alloc_group(&au_hfsn_ops);
+ if (IS_ERR(group)) {
+ err = PTR_ERR(group);
+ pr_err("fsnotify_alloc_group() failed, %d\n", err);
+ goto out_hfsn;
+ }
+
+ group->private = hfsn;
+ hfsn->hfsn_group = group;
+ br->br_hfsn = hfsn;
+ goto out; /* success */
+
+out_hfsn:
+ au_kfree_try_rcu(hfsn);
+out:
+ return err;
+}
+
+static int au_hfsn_reset_br(unsigned int udba, struct au_branch *br, int perm)
+{
+ int err;
+
+ err = 0;
+ if (!br->br_hfsn)
+ err = au_hfsn_init_br(br, perm);
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void au_hfsn_fin(void)
+{
+ AuDbg("au_hfsn_ifree %lld\n", (long long)atomic64_read(&au_hfsn_ifree));
+ wait_event(au_hfsn_wq, !atomic64_read(&au_hfsn_ifree));
+}
+
+const struct au_hnotify_op au_hnotify_op = {
+ .ctl = au_hfsn_ctl,
+ .alloc = au_hfsn_alloc,
+ .free = au_hfsn_free,
+
+ .fin = au_hfsn_fin,
+
+ .reset_br = au_hfsn_reset_br,
+ .fin_br = au_hfsn_fin_br,
+ .init_br = au_hfsn_init_br
+};
diff --git a/fs/aufs/hfsplus.c b/fs/aufs/hfsplus.c
new file mode 100644
index 0000000000..3bd869a69c
--- /dev/null
+++ b/fs/aufs/hfsplus.c
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2010-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * special support for filesystems which acquires an inode mutex
+ * at final closing a file, eg, hfsplus.
+ *
+ * This trick is very simple and stupid, just to open the file before really
+ * necessary open to tell hfsplus that this is not the final closing.
+ * The caller should call au_h_open_pre() after acquiring the inode mutex,
+ * and au_h_open_post() after releasing it.
+ */
+
+#include "aufs.h"
+
+struct file *au_h_open_pre(struct dentry *dentry, aufs_bindex_t bindex,
+ int force_wr)
+{
+ struct file *h_file;
+ struct dentry *h_dentry;
+
+ h_dentry = au_h_dptr(dentry, bindex);
+ AuDebugOn(!h_dentry);
+ AuDebugOn(d_is_negative(h_dentry));
+
+ h_file = NULL;
+ if (au_test_hfsplus(h_dentry->d_sb)
+ && d_is_reg(h_dentry))
+ h_file = au_h_open(dentry, bindex,
+ O_RDONLY | O_NOATIME | O_LARGEFILE,
+ /*file*/NULL, force_wr);
+ return h_file;
+}
+
+void au_h_open_post(struct dentry *dentry, aufs_bindex_t bindex,
+ struct file *h_file)
+{
+ struct au_branch *br;
+
+ if (h_file) {
+ fput(h_file);
+ br = au_sbr(dentry->d_sb, bindex);
+ au_lcnt_dec(&br->br_nfiles);
+ }
+}
diff --git a/fs/aufs/hnotify.c b/fs/aufs/hnotify.c
new file mode 100644
index 0000000000..2e7c2cdb82
--- /dev/null
+++ b/fs/aufs/hnotify.c
@@ -0,0 +1,721 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * abstraction to notify the direct changes on lower directories
+ */
+
+/* #include <linux/iversion.h> */
+#include "aufs.h"
+
+int au_hn_alloc(struct au_hinode *hinode, struct inode *inode)
+{
+ int err;
+ struct au_hnotify *hn;
+
+ err = -ENOMEM;
+ hn = au_cache_alloc_hnotify();
+ if (hn) {
+ hn->hn_aufs_inode = inode;
+ hinode->hi_notify = hn;
+ err = au_hnotify_op.alloc(hinode);
+ AuTraceErr(err);
+ if (unlikely(err)) {
+ hinode->hi_notify = NULL;
+ au_cache_free_hnotify(hn);
+ /*
+ * The upper dir was removed by udba, but the same named
+ * dir left. In this case, aufs assigns a new inode
+ * number and set the monitor again.
+ * For the lower dir, the old monitor is still left.
+ */
+ if (err == -EEXIST)
+ err = 0;
+ }
+ }
+
+ AuTraceErr(err);
+ return err;
+}
+
+void au_hn_free(struct au_hinode *hinode)
+{
+ struct au_hnotify *hn;
+
+ hn = hinode->hi_notify;
+ if (hn) {
+ hinode->hi_notify = NULL;
+ if (au_hnotify_op.free(hinode, hn))
+ au_cache_free_hnotify(hn);
+ }
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_hn_ctl(struct au_hinode *hinode, int do_set)
+{
+ if (hinode->hi_notify)
+ au_hnotify_op.ctl(hinode, do_set);
+}
+
+void au_hn_reset(struct inode *inode, unsigned int flags)
+{
+ aufs_bindex_t bindex, bbot;
+ struct inode *hi;
+ struct dentry *iwhdentry;
+
+ bbot = au_ibbot(inode);
+ for (bindex = au_ibtop(inode); bindex <= bbot; bindex++) {
+ hi = au_h_iptr(inode, bindex);
+ if (!hi)
+ continue;
+
+ /* inode_lock_nested(hi, AuLsc_I_CHILD); */
+ iwhdentry = au_hi_wh(inode, bindex);
+ if (iwhdentry)
+ dget(iwhdentry);
+ au_igrab(hi);
+ au_set_h_iptr(inode, bindex, NULL, 0);
+ au_set_h_iptr(inode, bindex, au_igrab(hi),
+ flags & ~AuHi_XINO);
+ iput(hi);
+ dput(iwhdentry);
+ /* inode_unlock(hi); */
+ }
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int hn_xino(struct inode *inode, struct inode *h_inode)
+{
+ int err;
+ aufs_bindex_t bindex, bbot, bfound, btop;
+ struct inode *h_i;
+
+ err = 0;
+ if (unlikely(inode->i_ino == AUFS_ROOT_INO)) {
+ pr_warn("branch root dir was changed\n");
+ goto out;
+ }
+
+ bfound = -1;
+ bbot = au_ibbot(inode);
+ btop = au_ibtop(inode);
+#if 0 /* reserved for future use */
+ if (bindex == bbot) {
+ /* keep this ino in rename case */
+ goto out;
+ }
+#endif
+ for (bindex = btop; bindex <= bbot; bindex++)
+ if (au_h_iptr(inode, bindex) == h_inode) {
+ bfound = bindex;
+ break;
+ }
+ if (bfound < 0)
+ goto out;
+
+ for (bindex = btop; bindex <= bbot; bindex++) {
+ h_i = au_h_iptr(inode, bindex);
+ if (!h_i)
+ continue;
+
+ err = au_xino_write(inode->i_sb, bindex, h_i->i_ino, /*ino*/0);
+ /* ignore this error */
+ /* bad action? */
+ }
+
+ /* children inode number will be broken */
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+static int hn_gen_tree(struct dentry *dentry)
+{
+ int err, i, j, ndentry;
+ struct au_dcsub_pages dpages;
+ struct au_dpage *dpage;
+ struct dentry **dentries;
+
+ err = au_dpages_init(&dpages, GFP_NOFS);
+ if (unlikely(err))
+ goto out;
+ err = au_dcsub_pages(&dpages, dentry, NULL, NULL);
+ if (unlikely(err))
+ goto out_dpages;
+
+ for (i = 0; i < dpages.ndpage; i++) {
+ dpage = dpages.dpages + i;
+ dentries = dpage->dentries;
+ ndentry = dpage->ndentry;
+ for (j = 0; j < ndentry; j++) {
+ struct dentry *d;
+
+ d = dentries[j];
+ if (IS_ROOT(d))
+ continue;
+
+ au_digen_dec(d);
+ if (d_really_is_positive(d))
+ /* todo: reset children xino?
+ cached children only? */
+ au_iigen_dec(d_inode(d));
+ }
+ }
+
+out_dpages:
+ au_dpages_free(&dpages);
+
+#if 0
+ /* discard children */
+ dentry_unhash(dentry);
+ dput(dentry);
+#endif
+out:
+ return err;
+}
+
+/*
+ * return 0 if processed.
+ */
+static int hn_gen_by_inode(char *name, unsigned int nlen, struct inode *inode,
+ const unsigned int isdir)
+{
+ int err;
+ struct dentry *d;
+ struct qstr *dname;
+
+ err = 1;
+ if (unlikely(inode->i_ino == AUFS_ROOT_INO)) {
+ pr_warn("branch root dir was changed\n");
+ err = 0;
+ goto out;
+ }
+
+ if (!isdir) {
+ AuDebugOn(!name);
+ au_iigen_dec(inode);
+ spin_lock(&inode->i_lock);
+ hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias) {
+ spin_lock(&d->d_lock);
+ dname = &d->d_name;
+ if (dname->len != nlen
+ && memcmp(dname->name, name, nlen)) {
+ spin_unlock(&d->d_lock);
+ continue;
+ }
+ err = 0;
+ au_digen_dec(d);
+ spin_unlock(&d->d_lock);
+ break;
+ }
+ spin_unlock(&inode->i_lock);
+ } else {
+ au_fset_si(au_sbi(inode->i_sb), FAILED_REFRESH_DIR);
+ d = d_find_any_alias(inode);
+ if (!d) {
+ au_iigen_dec(inode);
+ goto out;
+ }
+
+ spin_lock(&d->d_lock);
+ dname = &d->d_name;
+ if (dname->len == nlen && !memcmp(dname->name, name, nlen)) {
+ spin_unlock(&d->d_lock);
+ err = hn_gen_tree(d);
+ spin_lock(&d->d_lock);
+ }
+ spin_unlock(&d->d_lock);
+ dput(d);
+ }
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+static int hn_gen_by_name(struct dentry *dentry, const unsigned int isdir)
+{
+ int err;
+
+ if (IS_ROOT(dentry)) {
+ pr_warn("branch root dir was changed\n");
+ return 0;
+ }
+
+ err = 0;
+ if (!isdir) {
+ au_digen_dec(dentry);
+ if (d_really_is_positive(dentry))
+ au_iigen_dec(d_inode(dentry));
+ } else {
+ au_fset_si(au_sbi(dentry->d_sb), FAILED_REFRESH_DIR);
+ if (d_really_is_positive(dentry))
+ err = hn_gen_tree(dentry);
+ }
+
+ AuTraceErr(err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* hnotify job flags */
+#define AuHnJob_XINO0 1
+#define AuHnJob_GEN (1 << 1)
+#define AuHnJob_DIRENT (1 << 2)
+#define AuHnJob_ISDIR (1 << 3)
+#define AuHnJob_TRYXINO0 (1 << 4)
+#define AuHnJob_MNTPNT (1 << 5)
+#define au_ftest_hnjob(flags, name) ((flags) & AuHnJob_##name)
+#define au_fset_hnjob(flags, name) \
+ do { (flags) |= AuHnJob_##name; } while (0)
+#define au_fclr_hnjob(flags, name) \
+ do { (flags) &= ~AuHnJob_##name; } while (0)
+
+enum {
+ AuHn_CHILD,
+ AuHn_PARENT,
+ AuHnLast
+};
+
+struct au_hnotify_args {
+ struct inode *h_dir, *dir, *h_child_inode;
+ u32 mask;
+ unsigned int flags[AuHnLast];
+ unsigned int h_child_nlen;
+ char h_child_name[];
+};
+
+struct hn_job_args {
+ unsigned int flags;
+ struct inode *inode, *h_inode, *dir, *h_dir;
+ struct dentry *dentry;
+ char *h_name;
+ int h_nlen;
+};
+
+static int hn_job(struct hn_job_args *a)
+{
+ const unsigned int isdir = au_ftest_hnjob(a->flags, ISDIR);
+ int e;
+
+ /* reset xino */
+ if (au_ftest_hnjob(a->flags, XINO0) && a->inode)
+ hn_xino(a->inode, a->h_inode); /* ignore this error */
+
+ if (au_ftest_hnjob(a->flags, TRYXINO0)
+ && a->inode
+ && a->h_inode) {
+ inode_lock_shared_nested(a->h_inode, AuLsc_I_CHILD);
+ if (!a->h_inode->i_nlink
+ && !(a->h_inode->i_state & I_LINKABLE))
+ hn_xino(a->inode, a->h_inode); /* ignore this error */
+ inode_unlock_shared(a->h_inode);
+ }
+
+ /* make the generation obsolete */
+ if (au_ftest_hnjob(a->flags, GEN)) {
+ e = -1;
+ if (a->inode)
+ e = hn_gen_by_inode(a->h_name, a->h_nlen, a->inode,
+ isdir);
+ if (e && a->dentry)
+ hn_gen_by_name(a->dentry, isdir);
+ /* ignore this error */
+ }
+
+ /* make dir entries obsolete */
+ if (au_ftest_hnjob(a->flags, DIRENT) && a->inode) {
+ struct au_vdir *vdir;
+
+ vdir = au_ivdir(a->inode);
+ if (vdir)
+ vdir->vd_jiffy = 0;
+ /* IMustLock(a->inode); */
+ /* inode_inc_iversion(a->inode); */
+ }
+
+ /* can do nothing but warn */
+ if (au_ftest_hnjob(a->flags, MNTPNT)
+ && a->dentry
+ && d_mountpoint(a->dentry))
+ pr_warn("mount-point %pd is removed or renamed\n", a->dentry);
+
+ return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct dentry *lookup_wlock_by_name(char *name, unsigned int nlen,
+ struct inode *dir)
+{
+ struct dentry *dentry, *d, *parent;
+ struct qstr *dname;
+
+ parent = d_find_any_alias(dir);
+ if (!parent)
+ return NULL;
+
+ dentry = NULL;
+ spin_lock(&parent->d_lock);
+ list_for_each_entry(d, &parent->d_subdirs, d_child) {
+ /* AuDbg("%pd\n", d); */
+ spin_lock_nested(&d->d_lock, DENTRY_D_LOCK_NESTED);
+ dname = &d->d_name;
+ if (dname->len != nlen || memcmp(dname->name, name, nlen))
+ goto cont_unlock;
+ if (au_di(d))
+ au_digen_dec(d);
+ else
+ goto cont_unlock;
+ if (au_dcount(d) > 0) {
+ dentry = dget_dlock(d);
+ spin_unlock(&d->d_lock);
+ break;
+ }
+
+cont_unlock:
+ spin_unlock(&d->d_lock);
+ }
+ spin_unlock(&parent->d_lock);
+ dput(parent);
+
+ if (dentry)
+ di_write_lock_child(dentry);
+
+ return dentry;
+}
+
+static struct inode *lookup_wlock_by_ino(struct super_block *sb,
+ aufs_bindex_t bindex, ino_t h_ino)
+{
+ struct inode *inode;
+ ino_t ino;
+ int err;
+
+ inode = NULL;
+ err = au_xino_read(sb, bindex, h_ino, &ino);
+ if (!err && ino)
+ inode = ilookup(sb, ino);
+ if (!inode)
+ goto out;
+
+ if (unlikely(inode->i_ino == AUFS_ROOT_INO)) {
+ pr_warn("wrong root branch\n");
+ iput(inode);
+ inode = NULL;
+ goto out;
+ }
+
+ ii_write_lock_child(inode);
+
+out:
+ return inode;
+}
+
+static void au_hn_bh(void *_args)
+{
+ struct au_hnotify_args *a = _args;
+ struct super_block *sb;
+ aufs_bindex_t bindex, bbot, bfound;
+ unsigned char xino, try_iput;
+ int err;
+ struct inode *inode;
+ ino_t h_ino;
+ struct hn_job_args args;
+ struct dentry *dentry;
+ struct au_sbinfo *sbinfo;
+
+ AuDebugOn(!_args);
+ AuDebugOn(!a->h_dir);
+ AuDebugOn(!a->dir);
+ AuDebugOn(!a->mask);
+ AuDbg("mask 0x%x, i%lu, hi%lu, hci%lu\n",
+ a->mask, a->dir->i_ino, a->h_dir->i_ino,
+ a->h_child_inode ? a->h_child_inode->i_ino : 0);
+
+ inode = NULL;
+ dentry = NULL;
+ /*
+ * do not lock a->dir->i_mutex here
+ * because of d_revalidate() may cause a deadlock.
+ */
+ sb = a->dir->i_sb;
+ AuDebugOn(!sb);
+ sbinfo = au_sbi(sb);
+ AuDebugOn(!sbinfo);
+ si_write_lock(sb, AuLock_NOPLMW);
+
+ if (au_opt_test(sbinfo->si_mntflags, DIRREN))
+ switch (a->mask & FS_EVENTS_POSS_ON_CHILD) {
+ case FS_MOVED_FROM:
+ case FS_MOVED_TO:
+ AuWarn1("DIRREN with UDBA may not work correctly "
+ "for the direct rename(2)\n");
+ }
+
+ ii_read_lock_parent(a->dir);
+ bfound = -1;
+ bbot = au_ibbot(a->dir);
+ for (bindex = au_ibtop(a->dir); bindex <= bbot; bindex++)
+ if (au_h_iptr(a->dir, bindex) == a->h_dir) {
+ bfound = bindex;
+ break;
+ }
+ ii_read_unlock(a->dir);
+ if (unlikely(bfound < 0))
+ goto out;
+
+ xino = !!au_opt_test(au_mntflags(sb), XINO);
+ h_ino = 0;
+ if (a->h_child_inode)
+ h_ino = a->h_child_inode->i_ino;
+
+ if (a->h_child_nlen
+ && (au_ftest_hnjob(a->flags[AuHn_CHILD], GEN)
+ || au_ftest_hnjob(a->flags[AuHn_CHILD], MNTPNT)))
+ dentry = lookup_wlock_by_name(a->h_child_name, a->h_child_nlen,
+ a->dir);
+ try_iput = 0;
+ if (dentry && d_really_is_positive(dentry))
+ inode = d_inode(dentry);
+ if (xino && !inode && h_ino
+ && (au_ftest_hnjob(a->flags[AuHn_CHILD], XINO0)
+ || au_ftest_hnjob(a->flags[AuHn_CHILD], TRYXINO0)
+ || au_ftest_hnjob(a->flags[AuHn_CHILD], GEN))) {
+ inode = lookup_wlock_by_ino(sb, bfound, h_ino);
+ try_iput = 1;
+ }
+
+ args.flags = a->flags[AuHn_CHILD];
+ args.dentry = dentry;
+ args.inode = inode;
+ args.h_inode = a->h_child_inode;
+ args.dir = a->dir;
+ args.h_dir = a->h_dir;
+ args.h_name = a->h_child_name;
+ args.h_nlen = a->h_child_nlen;
+ err = hn_job(&args);
+ if (dentry) {
+ if (au_di(dentry))
+ di_write_unlock(dentry);
+ dput(dentry);
+ }
+ if (inode && try_iput) {
+ ii_write_unlock(inode);
+ iput(inode);
+ }
+
+ ii_write_lock_parent(a->dir);
+ args.flags = a->flags[AuHn_PARENT];
+ args.dentry = NULL;
+ args.inode = a->dir;
+ args.h_inode = a->h_dir;
+ args.dir = NULL;
+ args.h_dir = NULL;
+ args.h_name = NULL;
+ args.h_nlen = 0;
+ err = hn_job(&args);
+ ii_write_unlock(a->dir);
+
+out:
+ iput(a->h_child_inode);
+ iput(a->h_dir);
+ iput(a->dir);
+ si_write_unlock(sb);
+ au_nwt_done(&sbinfo->si_nowait);
+ au_kfree_rcu(a);
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_hnotify(struct inode *h_dir, struct au_hnotify *hnotify, u32 mask,
+ const struct qstr *h_child_qstr, struct inode *h_child_inode)
+{
+ int err, len;
+ unsigned int flags[AuHnLast], f;
+ unsigned char isdir, isroot, wh;
+ struct inode *dir;
+ struct au_hnotify_args *args;
+ char *p, *h_child_name;
+
+ err = 0;
+ AuDebugOn(!hnotify || !hnotify->hn_aufs_inode);
+ dir = igrab(hnotify->hn_aufs_inode);
+ if (!dir)
+ goto out;
+
+ isroot = (dir->i_ino == AUFS_ROOT_INO);
+ wh = 0;
+ h_child_name = (void *)h_child_qstr->name;
+ len = h_child_qstr->len;
+ if (h_child_name) {
+ if (len > AUFS_WH_PFX_LEN
+ && !memcmp(h_child_name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) {
+ h_child_name += AUFS_WH_PFX_LEN;
+ len -= AUFS_WH_PFX_LEN;
+ wh = 1;
+ }
+ }
+
+ isdir = 0;
+ if (h_child_inode)
+ isdir = !!S_ISDIR(h_child_inode->i_mode);
+ flags[AuHn_PARENT] = AuHnJob_ISDIR;
+ flags[AuHn_CHILD] = 0;
+ if (isdir)
+ flags[AuHn_CHILD] = AuHnJob_ISDIR;
+ au_fset_hnjob(flags[AuHn_PARENT], DIRENT);
+ au_fset_hnjob(flags[AuHn_CHILD], GEN);
+ switch (mask & ALL_FSNOTIFY_DIRENT_EVENTS) {
+ case FS_MOVED_FROM:
+ case FS_MOVED_TO:
+ au_fset_hnjob(flags[AuHn_CHILD], XINO0);
+ au_fset_hnjob(flags[AuHn_CHILD], MNTPNT);
+ /*FALLTHROUGH*/
+ case FS_CREATE:
+ AuDebugOn(!h_child_name);
+ break;
+
+ case FS_DELETE:
+ /*
+ * aufs never be able to get this child inode.
+ * revalidation should be in d_revalidate()
+ * by checking i_nlink, i_generation or d_unhashed().
+ */
+ AuDebugOn(!h_child_name);
+ au_fset_hnjob(flags[AuHn_CHILD], TRYXINO0);
+ au_fset_hnjob(flags[AuHn_CHILD], MNTPNT);
+ break;
+
+ default:
+ AuDebugOn(1);
+ }
+
+ if (wh)
+ h_child_inode = NULL;
+
+ err = -ENOMEM;
+ /* iput() and kfree() will be called in au_hnotify() */
+ args = kmalloc(sizeof(*args) + len + 1, GFP_NOFS);
+ if (unlikely(!args)) {
+ AuErr1("no memory\n");
+ iput(dir);
+ goto out;
+ }
+ args->flags[AuHn_PARENT] = flags[AuHn_PARENT];
+ args->flags[AuHn_CHILD] = flags[AuHn_CHILD];
+ args->mask = mask;
+ args->dir = dir;
+ args->h_dir = igrab(h_dir);
+ if (h_child_inode)
+ h_child_inode = igrab(h_child_inode); /* can be NULL */
+ args->h_child_inode = h_child_inode;
+ args->h_child_nlen = len;
+ if (len) {
+ p = (void *)args;
+ p += sizeof(*args);
+ memcpy(p, h_child_name, len);
+ p[len] = 0;
+ }
+
+ /* NFS fires the event for silly-renamed one from kworker */
+ f = 0;
+ if (!dir->i_nlink
+ || (au_test_nfs(h_dir->i_sb) && (mask & FS_DELETE)))
+ f = AuWkq_NEST;
+ err = au_wkq_nowait(au_hn_bh, args, dir->i_sb, f);
+ if (unlikely(err)) {
+ pr_err("wkq %d\n", err);
+ iput(args->h_child_inode);
+ iput(args->h_dir);
+ iput(args->dir);
+ au_kfree_rcu(args);
+ }
+
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_hnotify_reset_br(unsigned int udba, struct au_branch *br, int perm)
+{
+ int err;
+
+ AuDebugOn(!(udba & AuOptMask_UDBA));
+
+ err = 0;
+ if (au_hnotify_op.reset_br)
+ err = au_hnotify_op.reset_br(udba, br, perm);
+
+ return err;
+}
+
+int au_hnotify_init_br(struct au_branch *br, int perm)
+{
+ int err;
+
+ err = 0;
+ if (au_hnotify_op.init_br)
+ err = au_hnotify_op.init_br(br, perm);
+
+ return err;
+}
+
+void au_hnotify_fin_br(struct au_branch *br)
+{
+ if (au_hnotify_op.fin_br)
+ au_hnotify_op.fin_br(br);
+}
+
+static void au_hn_destroy_cache(void)
+{
+ kmem_cache_destroy(au_cache[AuCache_HNOTIFY]);
+ au_cache[AuCache_HNOTIFY] = NULL;
+}
+
+int __init au_hnotify_init(void)
+{
+ int err;
+
+ err = -ENOMEM;
+ au_cache[AuCache_HNOTIFY] = AuCache(au_hnotify);
+ if (au_cache[AuCache_HNOTIFY]) {
+ err = 0;
+ if (au_hnotify_op.init)
+ err = au_hnotify_op.init();
+ if (unlikely(err))
+ au_hn_destroy_cache();
+ }
+ AuTraceErr(err);
+ return err;
+}
+
+void au_hnotify_fin(void)
+{
+ if (au_hnotify_op.fin)
+ au_hnotify_op.fin();
+
+ /* cf. au_cache_fin() */
+ if (au_cache[AuCache_HNOTIFY])
+ au_hn_destroy_cache();
+}
diff --git a/fs/aufs/i_op.c b/fs/aufs/i_op.c
new file mode 100644
index 0000000000..ef1e08c7ca
--- /dev/null
+++ b/fs/aufs/i_op.c
@@ -0,0 +1,1505 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * inode operations (except add/del/rename)
+ */
+
+#include <linux/device_cgroup.h>
+#include <linux/fs_stack.h>
+#include <linux/iversion.h>
+#include <linux/namei.h>
+#include <linux/security.h>
+#include "aufs.h"
+
+static int h_permission(struct inode *h_inode, int mask,
+ struct path *h_path, int brperm)
+{
+ int err;
+ const unsigned char write_mask = !!(mask & (MAY_WRITE | MAY_APPEND));
+
+ err = -EPERM;
+ if (write_mask && IS_IMMUTABLE(h_inode))
+ goto out;
+
+ err = -EACCES;
+ if (((mask & MAY_EXEC)
+ && S_ISREG(h_inode->i_mode)
+ && (path_noexec(h_path)
+ || !(h_inode->i_mode & 0111))))
+ goto out;
+
+ /*
+ * - skip the lower fs test in the case of write to ro branch.
+ * - nfs dir permission write check is optimized, but a policy for
+ * link/rename requires a real check.
+ * - nfs always sets SB_POSIXACL regardless its mount option 'noacl.'
+ * in this case, generic_permission() returns -EOPNOTSUPP.
+ */
+ if ((write_mask && !au_br_writable(brperm))
+ || (au_test_nfs(h_inode->i_sb) && S_ISDIR(h_inode->i_mode)
+ && write_mask && !(mask & MAY_READ))
+ || !h_inode->i_op->permission) {
+ /* AuLabel(generic_permission); */
+ /* AuDbg("get_acl %ps\n", h_inode->i_op->get_acl); */
+ err = generic_permission(h_inode, mask);
+ if (err == -EOPNOTSUPP && au_test_nfs_noacl(h_inode))
+ err = h_inode->i_op->permission(h_inode, mask);
+ AuTraceErr(err);
+ } else {
+ /* AuLabel(h_inode->permission); */
+ err = h_inode->i_op->permission(h_inode, mask);
+ AuTraceErr(err);
+ }
+
+ if (!err)
+ err = devcgroup_inode_permission(h_inode, mask);
+ if (!err)
+ err = security_inode_permission(h_inode, mask);
+
+#if 0
+ if (!err) {
+ /* todo: do we need to call ima_path_check()? */
+ struct path h_path = {
+ .dentry =
+ .mnt = h_mnt
+ };
+ err = ima_path_check(&h_path,
+ mask & (MAY_READ | MAY_WRITE | MAY_EXEC),
+ IMA_COUNT_LEAVE);
+ }
+#endif
+
+out:
+ return err;
+}
+
+static int aufs_permission(struct inode *inode, int mask)
+{
+ int err;
+ aufs_bindex_t bindex, bbot;
+ const unsigned char isdir = !!S_ISDIR(inode->i_mode),
+ write_mask = !!(mask & (MAY_WRITE | MAY_APPEND));
+ struct inode *h_inode;
+ struct super_block *sb;
+ struct au_branch *br;
+
+ /* todo: support rcu-walk? */
+ if (mask & MAY_NOT_BLOCK)
+ return -ECHILD;
+
+ sb = inode->i_sb;
+ si_read_lock(sb, AuLock_FLUSH);
+ ii_read_lock_child(inode);
+#if 0
+ err = au_iigen_test(inode, au_sigen(sb));
+ if (unlikely(err))
+ goto out;
+#endif
+
+ if (!isdir
+ || write_mask
+ || au_opt_test(au_mntflags(sb), DIRPERM1)) {
+ err = au_busy_or_stale();
+ h_inode = au_h_iptr(inode, au_ibtop(inode));
+ if (unlikely(!h_inode
+ || (h_inode->i_mode & S_IFMT)
+ != (inode->i_mode & S_IFMT)))
+ goto out;
+
+ err = 0;
+ bindex = au_ibtop(inode);
+ br = au_sbr(sb, bindex);
+ err = h_permission(h_inode, mask, &br->br_path, br->br_perm);
+ if (write_mask
+ && !err
+ && !special_file(h_inode->i_mode)) {
+ /* test whether the upper writable branch exists */
+ err = -EROFS;
+ for (; bindex >= 0; bindex--)
+ if (!au_br_rdonly(au_sbr(sb, bindex))) {
+ err = 0;
+ break;
+ }
+ }
+ goto out;
+ }
+
+ /* non-write to dir */
+ err = 0;
+ bbot = au_ibbot(inode);
+ for (bindex = au_ibtop(inode); !err && bindex <= bbot; bindex++) {
+ h_inode = au_h_iptr(inode, bindex);
+ if (h_inode) {
+ err = au_busy_or_stale();
+ if (unlikely(!S_ISDIR(h_inode->i_mode)))
+ break;
+
+ br = au_sbr(sb, bindex);
+ err = h_permission(h_inode, mask, &br->br_path,
+ br->br_perm);
+ }
+ }
+
+out:
+ ii_read_unlock(inode);
+ si_read_unlock(sb);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct dentry *aufs_lookup(struct inode *dir, struct dentry *dentry,
+ unsigned int flags)
+{
+ struct dentry *ret, *parent;
+ struct inode *inode;
+ struct super_block *sb;
+ int err, npositive;
+
+ IMustLock(dir);
+
+ /* todo: support rcu-walk? */
+ ret = ERR_PTR(-ECHILD);
+ if (flags & LOOKUP_RCU)
+ goto out;
+
+ ret = ERR_PTR(-ENAMETOOLONG);
+ if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN))
+ goto out;
+
+ sb = dir->i_sb;
+ err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+ ret = ERR_PTR(err);
+ if (unlikely(err))
+ goto out;
+
+ err = au_di_init(dentry);
+ ret = ERR_PTR(err);
+ if (unlikely(err))
+ goto out_si;
+
+ inode = NULL;
+ npositive = 0; /* suppress a warning */
+ parent = dentry->d_parent; /* dir inode is locked */
+ di_read_lock_parent(parent, AuLock_IR);
+ err = au_alive_dir(parent);
+ if (!err)
+ err = au_digen_test(parent, au_sigen(sb));
+ if (!err) {
+ /* regardless LOOKUP_CREATE, always ALLOW_NEG */
+ npositive = au_lkup_dentry(dentry, au_dbtop(parent),
+ AuLkup_ALLOW_NEG);
+ err = npositive;
+ }
+ di_read_unlock(parent, AuLock_IR);
+ ret = ERR_PTR(err);
+ if (unlikely(err < 0))
+ goto out_unlock;
+
+ if (npositive) {
+ inode = au_new_inode(dentry, /*must_new*/0);
+ if (IS_ERR(inode)) {
+ ret = (void *)inode;
+ inode = NULL;
+ goto out_unlock;
+ }
+ }
+
+ if (inode)
+ atomic_inc(&inode->i_count);
+ ret = d_splice_alias(inode, dentry);
+#if 0
+ if (unlikely(d_need_lookup(dentry))) {
+ spin_lock(&dentry->d_lock);
+ dentry->d_flags &= ~DCACHE_NEED_LOOKUP;
+ spin_unlock(&dentry->d_lock);
+ } else
+#endif
+ if (inode) {
+ if (!IS_ERR(ret)) {
+ iput(inode);
+ if (ret && ret != dentry)
+ ii_write_unlock(inode);
+ } else {
+ ii_write_unlock(inode);
+ iput(inode);
+ inode = NULL;
+ }
+ }
+
+out_unlock:
+ di_write_unlock(dentry);
+out_si:
+ si_read_unlock(sb);
+out:
+ return ret;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * very dirty and complicated aufs ->atomic_open().
+ * aufs_atomic_open()
+ * + au_aopen_or_create()
+ * + add_simple()
+ * + vfsub_atomic_open()
+ * + branch fs ->atomic_open()
+ * may call the actual 'open' for h_file
+ * + inc br_nfiles only if opened
+ * + au_aopen_no_open() or au_aopen_do_open()
+ *
+ * au_aopen_do_open()
+ * + finish_open()
+ * + au_do_aopen()
+ * + au_do_open() the body of all 'open'
+ * + au_do_open_nondir()
+ * set the passed h_file
+ *
+ * au_aopen_no_open()
+ * + finish_no_open()
+ */
+
+struct aopen_node {
+ struct hlist_bl_node hblist;
+ struct file *file, *h_file;
+};
+
+static int au_do_aopen(struct inode *inode, struct file *file)
+{
+ struct hlist_bl_head *aopen;
+ struct hlist_bl_node *pos;
+ struct aopen_node *node;
+ struct au_do_open_args args = {
+ .aopen = 1,
+ .open = au_do_open_nondir
+ };
+
+ aopen = &au_sbi(inode->i_sb)->si_aopen;
+ hlist_bl_lock(aopen);
+ hlist_bl_for_each_entry(node, pos, aopen, hblist)
+ if (node->file == file) {
+ args.h_file = node->h_file;
+ break;
+ }
+ hlist_bl_unlock(aopen);
+ /* AuDebugOn(!args.h_file); */
+
+ return au_do_open(file, &args);
+}
+
+static int au_aopen_do_open(struct file *file, struct dentry *dentry,
+ struct aopen_node *aopen_node)
+{
+ int err;
+ struct hlist_bl_head *aopen;
+
+ AuLabel(here);
+ aopen = &au_sbi(dentry->d_sb)->si_aopen;
+ au_hbl_add(&aopen_node->hblist, aopen);
+ err = finish_open(file, dentry, au_do_aopen);
+ au_hbl_del(&aopen_node->hblist, aopen);
+ /* AuDbgFile(file); */
+ AuDbg("%pd%s%s\n", dentry,
+ (file->f_mode & FMODE_CREATED) ? " created" : "",
+ (file->f_mode & FMODE_OPENED) ? " opened" : "");
+
+ AuTraceErr(err);
+ return err;
+}
+
+static int au_aopen_no_open(struct file *file, struct dentry *dentry)
+{
+ int err;
+
+ AuLabel(here);
+ dget(dentry);
+ err = finish_no_open(file, dentry);
+
+ AuTraceErr(err);
+ return err;
+}
+
+static int aufs_atomic_open(struct inode *dir, struct dentry *dentry,
+ struct file *file, unsigned int open_flag,
+ umode_t create_mode)
+{
+ int err, did_open;
+ unsigned int lkup_flags;
+ aufs_bindex_t bindex;
+ struct super_block *sb;
+ struct dentry *parent, *d;
+ struct vfsub_aopen_args args = {
+ .open_flag = open_flag,
+ .create_mode = create_mode
+ };
+ struct aopen_node aopen_node = {
+ .file = file
+ };
+
+ IMustLock(dir);
+ AuDbg("open_flag 0%o\n", open_flag);
+ AuDbgDentry(dentry);
+
+ err = 0;
+ if (!au_di(dentry)) {
+ lkup_flags = LOOKUP_OPEN;
+ if (open_flag & O_CREAT)
+ lkup_flags |= LOOKUP_CREATE;
+ d = aufs_lookup(dir, dentry, lkup_flags);
+ if (IS_ERR(d)) {
+ err = PTR_ERR(d);
+ AuTraceErr(err);
+ goto out;
+ } else if (d) {
+ /*
+ * obsoleted dentry found.
+ * another error will be returned later.
+ */
+ d_drop(d);
+ AuDbgDentry(d);
+ dput(d);
+ }
+ AuDbgDentry(dentry);
+ }
+
+ if (d_is_positive(dentry)
+ || d_unhashed(dentry)
+ || d_unlinked(dentry)
+ || !(open_flag & O_CREAT)) {
+ err = au_aopen_no_open(file, dentry);
+ goto out; /* success */
+ }
+
+ err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_GEN);
+ if (unlikely(err))
+ goto out;
+
+ sb = dentry->d_sb;
+ parent = dentry->d_parent; /* dir is locked */
+ di_write_lock_parent(parent);
+ err = au_lkup_dentry(dentry, /*btop*/0, AuLkup_ALLOW_NEG);
+ if (unlikely(err < 0))
+ goto out_parent;
+
+ AuDbgDentry(dentry);
+ if (d_is_positive(dentry)) {
+ err = au_aopen_no_open(file, dentry);
+ goto out_parent; /* success */
+ }
+
+ args.file = alloc_empty_file(file->f_flags, current_cred());
+ err = PTR_ERR(args.file);
+ if (IS_ERR(args.file))
+ goto out_parent;
+
+ bindex = au_dbtop(dentry);
+ err = au_aopen_or_create(dir, dentry, &args);
+ AuTraceErr(err);
+ AuDbgFile(args.file);
+ file->f_mode = args.file->f_mode & ~FMODE_OPENED;
+ did_open = !!(args.file->f_mode & FMODE_OPENED);
+ if (!did_open) {
+ fput(args.file);
+ args.file = NULL;
+ }
+ di_write_unlock(parent);
+ di_write_unlock(dentry);
+ if (unlikely(err < 0)) {
+ if (args.file)
+ fput(args.file);
+ goto out_sb;
+ }
+
+ if (!did_open)
+ err = au_aopen_no_open(file, dentry);
+ else {
+ aopen_node.h_file = args.file;
+ err = au_aopen_do_open(file, dentry, &aopen_node);
+ }
+ if (unlikely(err < 0)) {
+ if (args.file)
+ fput(args.file);
+ if (did_open)
+ au_lcnt_dec(&args.br->br_nfiles);
+ }
+ goto out_sb; /* success */
+
+out_parent:
+ di_write_unlock(parent);
+ di_write_unlock(dentry);
+out_sb:
+ si_read_unlock(sb);
+out:
+ AuTraceErr(err);
+ AuDbgFile(file);
+ return err;
+}
+
+
+/* ---------------------------------------------------------------------- */
+
+static int au_wr_dir_cpup(struct dentry *dentry, struct dentry *parent,
+ const unsigned char add_entry, aufs_bindex_t bcpup,
+ aufs_bindex_t btop)
+{
+ int err;
+ struct dentry *h_parent;
+ struct inode *h_dir;
+
+ if (add_entry)
+ IMustLock(d_inode(parent));
+ else
+ di_write_lock_parent(parent);
+
+ err = 0;
+ if (!au_h_dptr(parent, bcpup)) {
+ if (btop > bcpup)
+ err = au_cpup_dirs(dentry, bcpup);
+ else if (btop < bcpup)
+ err = au_cpdown_dirs(dentry, bcpup);
+ else
+ BUG();
+ }
+ if (!err && add_entry && !au_ftest_wrdir(add_entry, TMPFILE)) {
+ h_parent = au_h_dptr(parent, bcpup);
+ h_dir = d_inode(h_parent);
+ inode_lock_shared_nested(h_dir, AuLsc_I_PARENT);
+ err = au_lkup_neg(dentry, bcpup, /*wh*/0);
+ /* todo: no unlock here */
+ inode_unlock_shared(h_dir);
+
+ AuDbg("bcpup %d\n", bcpup);
+ if (!err) {
+ if (d_really_is_negative(dentry))
+ au_set_h_dptr(dentry, btop, NULL);
+ au_update_dbrange(dentry, /*do_put_zero*/0);
+ }
+ }
+
+ if (!add_entry)
+ di_write_unlock(parent);
+ if (!err)
+ err = bcpup; /* success */
+
+ AuTraceErr(err);
+ return err;
+}
+
+/*
+ * decide the branch and the parent dir where we will create a new entry.
+ * returns new bindex or an error.
+ * copyup the parent dir if needed.
+ */
+int au_wr_dir(struct dentry *dentry, struct dentry *src_dentry,
+ struct au_wr_dir_args *args)
+{
+ int err;
+ unsigned int flags;
+ aufs_bindex_t bcpup, btop, src_btop;
+ const unsigned char add_entry
+ = au_ftest_wrdir(args->flags, ADD_ENTRY)
+ | au_ftest_wrdir(args->flags, TMPFILE);
+ struct super_block *sb;
+ struct dentry *parent;
+ struct au_sbinfo *sbinfo;
+
+ sb = dentry->d_sb;
+ sbinfo = au_sbi(sb);
+ parent = dget_parent(dentry);
+ btop = au_dbtop(dentry);
+ bcpup = btop;
+ if (args->force_btgt < 0) {
+ if (src_dentry) {
+ src_btop = au_dbtop(src_dentry);
+ if (src_btop < btop)
+ bcpup = src_btop;
+ } else if (add_entry) {
+ flags = 0;
+ if (au_ftest_wrdir(args->flags, ISDIR))
+ au_fset_wbr(flags, DIR);
+ err = AuWbrCreate(sbinfo, dentry, flags);
+ bcpup = err;
+ }
+
+ if (bcpup < 0 || au_test_ro(sb, bcpup, d_inode(dentry))) {
+ if (add_entry)
+ err = AuWbrCopyup(sbinfo, dentry);
+ else {
+ if (!IS_ROOT(dentry)) {
+ di_read_lock_parent(parent, !AuLock_IR);
+ err = AuWbrCopyup(sbinfo, dentry);
+ di_read_unlock(parent, !AuLock_IR);
+ } else
+ err = AuWbrCopyup(sbinfo, dentry);
+ }
+ bcpup = err;
+ if (unlikely(err < 0))
+ goto out;
+ }
+ } else {
+ bcpup = args->force_btgt;
+ AuDebugOn(au_test_ro(sb, bcpup, d_inode(dentry)));
+ }
+
+ AuDbg("btop %d, bcpup %d\n", btop, bcpup);
+ err = bcpup;
+ if (bcpup == btop)
+ goto out; /* success */
+
+ /* copyup the new parent into the branch we process */
+ err = au_wr_dir_cpup(dentry, parent, add_entry, bcpup, btop);
+ if (err >= 0) {
+ if (d_really_is_negative(dentry)) {
+ au_set_h_dptr(dentry, btop, NULL);
+ au_set_dbtop(dentry, bcpup);
+ au_set_dbbot(dentry, bcpup);
+ }
+ AuDebugOn(add_entry
+ && !au_ftest_wrdir(args->flags, TMPFILE)
+ && !au_h_dptr(dentry, bcpup));
+ }
+
+out:
+ dput(parent);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_pin_hdir_unlock(struct au_pin *p)
+{
+ if (p->hdir)
+ au_hn_inode_unlock(p->hdir);
+}
+
+int au_pin_hdir_lock(struct au_pin *p)
+{
+ int err;
+
+ err = 0;
+ if (!p->hdir)
+ goto out;
+
+ /* even if an error happens later, keep this lock */
+ au_hn_inode_lock_nested(p->hdir, p->lsc_hi);
+
+ err = -EBUSY;
+ if (unlikely(p->hdir->hi_inode != d_inode(p->h_parent)))
+ goto out;
+
+ err = 0;
+ if (p->h_dentry)
+ err = au_h_verify(p->h_dentry, p->udba, p->hdir->hi_inode,
+ p->h_parent, p->br);
+
+out:
+ return err;
+}
+
+int au_pin_hdir_relock(struct au_pin *p)
+{
+ int err, i;
+ struct inode *h_i;
+ struct dentry *h_d[] = {
+ p->h_dentry,
+ p->h_parent
+ };
+
+ err = au_pin_hdir_lock(p);
+ if (unlikely(err))
+ goto out;
+
+ for (i = 0; !err && i < sizeof(h_d)/sizeof(*h_d); i++) {
+ if (!h_d[i])
+ continue;
+ if (d_is_positive(h_d[i])) {
+ h_i = d_inode(h_d[i]);
+ err = !h_i->i_nlink;
+ }
+ }
+
+out:
+ return err;
+}
+
+static void au_pin_hdir_set_owner(struct au_pin *p, struct task_struct *task)
+{
+ atomic_long_set(&p->hdir->hi_inode->i_rwsem.owner, (long)task);
+}
+
+void au_pin_hdir_acquire_nest(struct au_pin *p)
+{
+ if (p->hdir) {
+ rwsem_acquire_nest(&p->hdir->hi_inode->i_rwsem.dep_map,
+ p->lsc_hi, 0, NULL, _RET_IP_);
+ au_pin_hdir_set_owner(p, current);
+ }
+}
+
+void au_pin_hdir_release(struct au_pin *p)
+{
+ if (p->hdir) {
+ au_pin_hdir_set_owner(p, p->task);
+ rwsem_release(&p->hdir->hi_inode->i_rwsem.dep_map, 1, _RET_IP_);
+ }
+}
+
+struct dentry *au_pinned_h_parent(struct au_pin *pin)
+{
+ if (pin && pin->parent)
+ return au_h_dptr(pin->parent, pin->bindex);
+ return NULL;
+}
+
+void au_unpin(struct au_pin *p)
+{
+ if (p->hdir)
+ au_pin_hdir_unlock(p);
+ if (p->h_mnt && au_ftest_pin(p->flags, MNT_WRITE))
+ vfsub_mnt_drop_write(p->h_mnt);
+ if (!p->hdir)
+ return;
+
+ if (!au_ftest_pin(p->flags, DI_LOCKED))
+ di_read_unlock(p->parent, AuLock_IR);
+ iput(p->hdir->hi_inode);
+ dput(p->parent);
+ p->parent = NULL;
+ p->hdir = NULL;
+ p->h_mnt = NULL;
+ /* do not clear p->task */
+}
+
+int au_do_pin(struct au_pin *p)
+{
+ int err;
+ struct super_block *sb;
+ struct inode *h_dir;
+
+ err = 0;
+ sb = p->dentry->d_sb;
+ p->br = au_sbr(sb, p->bindex);
+ if (IS_ROOT(p->dentry)) {
+ if (au_ftest_pin(p->flags, MNT_WRITE)) {
+ p->h_mnt = au_br_mnt(p->br);
+ err = vfsub_mnt_want_write(p->h_mnt);
+ if (unlikely(err)) {
+ au_fclr_pin(p->flags, MNT_WRITE);
+ goto out_err;
+ }
+ }
+ goto out;
+ }
+
+ p->h_dentry = NULL;
+ if (p->bindex <= au_dbbot(p->dentry))
+ p->h_dentry = au_h_dptr(p->dentry, p->bindex);
+
+ p->parent = dget_parent(p->dentry);
+ if (!au_ftest_pin(p->flags, DI_LOCKED))
+ di_read_lock(p->parent, AuLock_IR, p->lsc_di);
+
+ h_dir = NULL;
+ p->h_parent = au_h_dptr(p->parent, p->bindex);
+ p->hdir = au_hi(d_inode(p->parent), p->bindex);
+ if (p->hdir)
+ h_dir = p->hdir->hi_inode;
+
+ /*
+ * udba case, or
+ * if DI_LOCKED is not set, then p->parent may be different
+ * and h_parent can be NULL.
+ */
+ if (unlikely(!p->hdir || !h_dir || !p->h_parent)) {
+ err = -EBUSY;
+ if (!au_ftest_pin(p->flags, DI_LOCKED))
+ di_read_unlock(p->parent, AuLock_IR);
+ dput(p->parent);
+ p->parent = NULL;
+ goto out_err;
+ }
+
+ if (au_ftest_pin(p->flags, MNT_WRITE)) {
+ p->h_mnt = au_br_mnt(p->br);
+ err = vfsub_mnt_want_write(p->h_mnt);
+ if (unlikely(err)) {
+ au_fclr_pin(p->flags, MNT_WRITE);
+ if (!au_ftest_pin(p->flags, DI_LOCKED))
+ di_read_unlock(p->parent, AuLock_IR);
+ dput(p->parent);
+ p->parent = NULL;
+ goto out_err;
+ }
+ }
+
+ au_igrab(h_dir);
+ err = au_pin_hdir_lock(p);
+ if (!err)
+ goto out; /* success */
+
+ au_unpin(p);
+
+out_err:
+ pr_err("err %d\n", err);
+ err = au_busy_or_stale();
+out:
+ return err;
+}
+
+void au_pin_init(struct au_pin *p, struct dentry *dentry,
+ aufs_bindex_t bindex, int lsc_di, int lsc_hi,
+ unsigned int udba, unsigned char flags)
+{
+ p->dentry = dentry;
+ p->udba = udba;
+ p->lsc_di = lsc_di;
+ p->lsc_hi = lsc_hi;
+ p->flags = flags;
+ p->bindex = bindex;
+
+ p->parent = NULL;
+ p->hdir = NULL;
+ p->h_mnt = NULL;
+
+ p->h_dentry = NULL;
+ p->h_parent = NULL;
+ p->br = NULL;
+ p->task = current;
+}
+
+int au_pin(struct au_pin *pin, struct dentry *dentry, aufs_bindex_t bindex,
+ unsigned int udba, unsigned char flags)
+{
+ au_pin_init(pin, dentry, bindex, AuLsc_DI_PARENT, AuLsc_I_PARENT2,
+ udba, flags);
+ return au_do_pin(pin);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * ->setattr() and ->getattr() are called in various cases.
+ * chmod, stat: dentry is revalidated.
+ * fchmod, fstat: file and dentry are not revalidated, additionally they may be
+ * unhashed.
+ * for ->setattr(), ia->ia_file is passed from ftruncate only.
+ */
+/* todo: consolidate with do_refresh() and simple_reval_dpath() */
+int au_reval_for_attr(struct dentry *dentry, unsigned int sigen)
+{
+ int err;
+ struct dentry *parent;
+
+ err = 0;
+ if (au_digen_test(dentry, sigen)) {
+ parent = dget_parent(dentry);
+ di_read_lock_parent(parent, AuLock_IR);
+ err = au_refresh_dentry(dentry, parent);
+ di_read_unlock(parent, AuLock_IR);
+ dput(parent);
+ }
+
+ AuTraceErr(err);
+ return err;
+}
+
+int au_pin_and_icpup(struct dentry *dentry, struct iattr *ia,
+ struct au_icpup_args *a)
+{
+ int err;
+ loff_t sz;
+ aufs_bindex_t btop, ibtop;
+ struct dentry *hi_wh, *parent;
+ struct inode *inode;
+ struct au_wr_dir_args wr_dir_args = {
+ .force_btgt = -1,
+ .flags = 0
+ };
+
+ if (d_is_dir(dentry))
+ au_fset_wrdir(wr_dir_args.flags, ISDIR);
+ /* plink or hi_wh() case */
+ btop = au_dbtop(dentry);
+ inode = d_inode(dentry);
+ ibtop = au_ibtop(inode);
+ if (btop != ibtop && !au_test_ro(inode->i_sb, ibtop, inode))
+ wr_dir_args.force_btgt = ibtop;
+ err = au_wr_dir(dentry, /*src_dentry*/NULL, &wr_dir_args);
+ if (unlikely(err < 0))
+ goto out;
+ a->btgt = err;
+ if (err != btop)
+ au_fset_icpup(a->flags, DID_CPUP);
+
+ err = 0;
+ a->pin_flags = AuPin_MNT_WRITE;
+ parent = NULL;
+ if (!IS_ROOT(dentry)) {
+ au_fset_pin(a->pin_flags, DI_LOCKED);
+ parent = dget_parent(dentry);
+ di_write_lock_parent(parent);
+ }
+
+ err = au_pin(&a->pin, dentry, a->btgt, a->udba, a->pin_flags);
+ if (unlikely(err))
+ goto out_parent;
+
+ sz = -1;
+ a->h_path.dentry = au_h_dptr(dentry, btop);
+ a->h_inode = d_inode(a->h_path.dentry);
+ if (ia && (ia->ia_valid & ATTR_SIZE)) {
+ inode_lock_shared_nested(a->h_inode, AuLsc_I_CHILD);
+ if (ia->ia_size < i_size_read(a->h_inode))
+ sz = ia->ia_size;
+ inode_unlock_shared(a->h_inode);
+ }
+
+ hi_wh = NULL;
+ if (au_ftest_icpup(a->flags, DID_CPUP) && d_unlinked(dentry)) {
+ hi_wh = au_hi_wh(inode, a->btgt);
+ if (!hi_wh) {
+ struct au_cp_generic cpg = {
+ .dentry = dentry,
+ .bdst = a->btgt,
+ .bsrc = -1,
+ .len = sz,
+ .pin = &a->pin
+ };
+ err = au_sio_cpup_wh(&cpg, /*file*/NULL);
+ if (unlikely(err))
+ goto out_unlock;
+ hi_wh = au_hi_wh(inode, a->btgt);
+ /* todo: revalidate hi_wh? */
+ }
+ }
+
+ if (parent) {
+ au_pin_set_parent_lflag(&a->pin, /*lflag*/0);
+ di_downgrade_lock(parent, AuLock_IR);
+ dput(parent);
+ parent = NULL;
+ }
+ if (!au_ftest_icpup(a->flags, DID_CPUP))
+ goto out; /* success */
+
+ if (!d_unhashed(dentry)) {
+ struct au_cp_generic cpg = {
+ .dentry = dentry,
+ .bdst = a->btgt,
+ .bsrc = btop,
+ .len = sz,
+ .pin = &a->pin,
+ .flags = AuCpup_DTIME | AuCpup_HOPEN
+ };
+ err = au_sio_cpup_simple(&cpg);
+ if (!err)
+ a->h_path.dentry = au_h_dptr(dentry, a->btgt);
+ } else if (!hi_wh)
+ a->h_path.dentry = au_h_dptr(dentry, a->btgt);
+ else
+ a->h_path.dentry = hi_wh; /* do not dget here */
+
+out_unlock:
+ a->h_inode = d_inode(a->h_path.dentry);
+ if (!err)
+ goto out; /* success */
+ au_unpin(&a->pin);
+out_parent:
+ if (parent) {
+ di_write_unlock(parent);
+ dput(parent);
+ }
+out:
+ if (!err)
+ inode_lock_nested(a->h_inode, AuLsc_I_CHILD);
+ return err;
+}
+
+static int aufs_setattr(struct dentry *dentry, struct iattr *ia)
+{
+ int err;
+ struct inode *inode, *delegated;
+ struct super_block *sb;
+ struct file *file;
+ struct au_icpup_args *a;
+
+ inode = d_inode(dentry);
+ IMustLock(inode);
+
+ err = setattr_prepare(dentry, ia);
+ if (unlikely(err))
+ goto out;
+
+ err = -ENOMEM;
+ a = kzalloc(sizeof(*a), GFP_NOFS);
+ if (unlikely(!a))
+ goto out;
+
+ if (ia->ia_valid & (ATTR_KILL_SUID | ATTR_KILL_SGID))
+ ia->ia_valid &= ~ATTR_MODE;
+
+ file = NULL;
+ sb = dentry->d_sb;
+ err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+ if (unlikely(err))
+ goto out_kfree;
+
+ if (ia->ia_valid & ATTR_FILE) {
+ /* currently ftruncate(2) only */
+ AuDebugOn(!d_is_reg(dentry));
+ file = ia->ia_file;
+ err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/1,
+ /*fi_lsc*/0);
+ if (unlikely(err))
+ goto out_si;
+ ia->ia_file = au_hf_top(file);
+ a->udba = AuOpt_UDBA_NONE;
+ } else {
+ /* fchmod() doesn't pass ia_file */
+ a->udba = au_opt_udba(sb);
+ di_write_lock_child(dentry);
+ /* no d_unlinked(), to set UDBA_NONE for root */
+ if (d_unhashed(dentry))
+ a->udba = AuOpt_UDBA_NONE;
+ if (a->udba != AuOpt_UDBA_NONE) {
+ AuDebugOn(IS_ROOT(dentry));
+ err = au_reval_for_attr(dentry, au_sigen(sb));
+ if (unlikely(err))
+ goto out_dentry;
+ }
+ }
+
+ err = au_pin_and_icpup(dentry, ia, a);
+ if (unlikely(err < 0))
+ goto out_dentry;
+ if (au_ftest_icpup(a->flags, DID_CPUP)) {
+ ia->ia_file = NULL;
+ ia->ia_valid &= ~ATTR_FILE;
+ }
+
+ a->h_path.mnt = au_sbr_mnt(sb, a->btgt);
+ if ((ia->ia_valid & (ATTR_MODE | ATTR_CTIME))
+ == (ATTR_MODE | ATTR_CTIME)) {
+ err = security_path_chmod(&a->h_path, ia->ia_mode);
+ if (unlikely(err))
+ goto out_unlock;
+ } else if ((ia->ia_valid & (ATTR_UID | ATTR_GID))
+ && (ia->ia_valid & ATTR_CTIME)) {
+ err = security_path_chown(&a->h_path, ia->ia_uid, ia->ia_gid);
+ if (unlikely(err))
+ goto out_unlock;
+ }
+
+ if (ia->ia_valid & ATTR_SIZE) {
+ struct file *f;
+
+ if (ia->ia_size < i_size_read(inode))
+ /* unmap only */
+ truncate_setsize(inode, ia->ia_size);
+
+ f = NULL;
+ if (ia->ia_valid & ATTR_FILE)
+ f = ia->ia_file;
+ inode_unlock(a->h_inode);
+ err = vfsub_trunc(&a->h_path, ia->ia_size, ia->ia_valid, f);
+ inode_lock_nested(a->h_inode, AuLsc_I_CHILD);
+ } else {
+ delegated = NULL;
+ while (1) {
+ err = vfsub_notify_change(&a->h_path, ia, &delegated);
+ if (delegated) {
+ err = break_deleg_wait(&delegated);
+ if (!err)
+ continue;
+ }
+ break;
+ }
+ }
+ /*
+ * regardless aufs 'acl' option setting.
+ * why don't all acl-aware fs call this func from their ->setattr()?
+ */
+ if (!err && (ia->ia_valid & ATTR_MODE))
+ err = vfsub_acl_chmod(a->h_inode, ia->ia_mode);
+ if (!err)
+ au_cpup_attr_changeable(inode);
+
+out_unlock:
+ inode_unlock(a->h_inode);
+ au_unpin(&a->pin);
+ if (unlikely(err))
+ au_update_dbtop(dentry);
+out_dentry:
+ di_write_unlock(dentry);
+ if (file) {
+ fi_write_unlock(file);
+ ia->ia_file = file;
+ ia->ia_valid |= ATTR_FILE;
+ }
+out_si:
+ si_read_unlock(sb);
+out_kfree:
+ au_kfree_rcu(a);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+#if IS_ENABLED(CONFIG_AUFS_XATTR) || IS_ENABLED(CONFIG_FS_POSIX_ACL)
+static int au_h_path_to_set_attr(struct dentry *dentry,
+ struct au_icpup_args *a, struct path *h_path)
+{
+ int err;
+ struct super_block *sb;
+
+ sb = dentry->d_sb;
+ a->udba = au_opt_udba(sb);
+ /* no d_unlinked(), to set UDBA_NONE for root */
+ if (d_unhashed(dentry))
+ a->udba = AuOpt_UDBA_NONE;
+ if (a->udba != AuOpt_UDBA_NONE) {
+ AuDebugOn(IS_ROOT(dentry));
+ err = au_reval_for_attr(dentry, au_sigen(sb));
+ if (unlikely(err))
+ goto out;
+ }
+ err = au_pin_and_icpup(dentry, /*ia*/NULL, a);
+ if (unlikely(err < 0))
+ goto out;
+
+ h_path->dentry = a->h_path.dentry;
+ h_path->mnt = au_sbr_mnt(sb, a->btgt);
+
+out:
+ return err;
+}
+
+ssize_t au_sxattr(struct dentry *dentry, struct inode *inode,
+ struct au_sxattr *arg)
+{
+ int err;
+ struct path h_path;
+ struct super_block *sb;
+ struct au_icpup_args *a;
+ struct inode *h_inode;
+
+ IMustLock(inode);
+
+ err = -ENOMEM;
+ a = kzalloc(sizeof(*a), GFP_NOFS);
+ if (unlikely(!a))
+ goto out;
+
+ sb = dentry->d_sb;
+ err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+ if (unlikely(err))
+ goto out_kfree;
+
+ h_path.dentry = NULL; /* silence gcc */
+ di_write_lock_child(dentry);
+ err = au_h_path_to_set_attr(dentry, a, &h_path);
+ if (unlikely(err))
+ goto out_di;
+
+ inode_unlock(a->h_inode);
+ switch (arg->type) {
+ case AU_XATTR_SET:
+ AuDebugOn(d_is_negative(h_path.dentry));
+ err = vfsub_setxattr(h_path.dentry,
+ arg->u.set.name, arg->u.set.value,
+ arg->u.set.size, arg->u.set.flags);
+ break;
+ case AU_ACL_SET:
+ err = -EOPNOTSUPP;
+ h_inode = d_inode(h_path.dentry);
+ if (h_inode->i_op->set_acl)
+ /* this will call posix_acl_update_mode */
+ err = h_inode->i_op->set_acl(h_inode,
+ arg->u.acl_set.acl,
+ arg->u.acl_set.type);
+ break;
+ }
+ if (!err)
+ au_cpup_attr_timesizes(inode);
+
+ au_unpin(&a->pin);
+ if (unlikely(err))
+ au_update_dbtop(dentry);
+
+out_di:
+ di_write_unlock(dentry);
+ si_read_unlock(sb);
+out_kfree:
+ au_kfree_rcu(a);
+out:
+ AuTraceErr(err);
+ return err;
+}
+#endif
+
+static void au_refresh_iattr(struct inode *inode, struct kstat *st,
+ unsigned int nlink)
+{
+ unsigned int n;
+
+ inode->i_mode = st->mode;
+ /* don't i_[ug]id_write() here */
+ inode->i_uid = st->uid;
+ inode->i_gid = st->gid;
+ inode->i_atime = st->atime;
+ inode->i_mtime = st->mtime;
+ inode->i_ctime = st->ctime;
+
+ au_cpup_attr_nlink(inode, /*force*/0);
+ if (S_ISDIR(inode->i_mode)) {
+ n = inode->i_nlink;
+ n -= nlink;
+ n += st->nlink;
+ smp_mb(); /* for i_nlink */
+ /* 0 can happen */
+ set_nlink(inode, n);
+ }
+
+ spin_lock(&inode->i_lock);
+ inode->i_blocks = st->blocks;
+ i_size_write(inode, st->size);
+ spin_unlock(&inode->i_lock);
+}
+
+/*
+ * common routine for aufs_getattr() and au_getxattr().
+ * returns zero or negative (an error).
+ * @dentry will be read-locked in success.
+ */
+int au_h_path_getattr(struct dentry *dentry, int force, struct path *h_path,
+ int locked)
+{
+ int err;
+ unsigned int mnt_flags, sigen;
+ unsigned char udba_none;
+ aufs_bindex_t bindex;
+ struct super_block *sb, *h_sb;
+ struct inode *inode;
+
+ h_path->mnt = NULL;
+ h_path->dentry = NULL;
+
+ err = 0;
+ sb = dentry->d_sb;
+ mnt_flags = au_mntflags(sb);
+ udba_none = !!au_opt_test(mnt_flags, UDBA_NONE);
+
+ if (unlikely(locked))
+ goto body; /* skip locking dinfo */
+
+ /* support fstat(2) */
+ if (!d_unlinked(dentry) && !udba_none) {
+ sigen = au_sigen(sb);
+ err = au_digen_test(dentry, sigen);
+ if (!err) {
+ di_read_lock_child(dentry, AuLock_IR);
+ err = au_dbrange_test(dentry);
+ if (unlikely(err)) {
+ di_read_unlock(dentry, AuLock_IR);
+ goto out;
+ }
+ } else {
+ AuDebugOn(IS_ROOT(dentry));
+ di_write_lock_child(dentry);
+ err = au_dbrange_test(dentry);
+ if (!err)
+ err = au_reval_for_attr(dentry, sigen);
+ if (!err)
+ di_downgrade_lock(dentry, AuLock_IR);
+ else {
+ di_write_unlock(dentry);
+ goto out;
+ }
+ }
+ } else
+ di_read_lock_child(dentry, AuLock_IR);
+
+body:
+ inode = d_inode(dentry);
+ bindex = au_ibtop(inode);
+ h_path->mnt = au_sbr_mnt(sb, bindex);
+ h_sb = h_path->mnt->mnt_sb;
+ if (!force
+ && !au_test_fs_bad_iattr(h_sb)
+ && udba_none)
+ goto out; /* success */
+
+ if (au_dbtop(dentry) == bindex)
+ h_path->dentry = au_h_dptr(dentry, bindex);
+ else if (au_opt_test(mnt_flags, PLINK) && au_plink_test(inode)) {
+ h_path->dentry = au_plink_lkup(inode, bindex);
+ if (IS_ERR(h_path->dentry))
+ /* pretending success */
+ h_path->dentry = NULL;
+ else
+ dput(h_path->dentry);
+ }
+
+out:
+ return err;
+}
+
+static int aufs_getattr(const struct path *path, struct kstat *st,
+ u32 request, unsigned int query)
+{
+ int err;
+ unsigned char positive;
+ struct path h_path;
+ struct dentry *dentry;
+ struct inode *inode;
+ struct super_block *sb;
+
+ dentry = path->dentry;
+ inode = d_inode(dentry);
+ sb = dentry->d_sb;
+ err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+ if (unlikely(err))
+ goto out;
+ err = au_h_path_getattr(dentry, /*force*/0, &h_path, /*locked*/0);
+ if (unlikely(err))
+ goto out_si;
+ if (unlikely(!h_path.dentry))
+ /* illegally overlapped or something */
+ goto out_fill; /* pretending success */
+
+ positive = d_is_positive(h_path.dentry);
+ if (positive)
+ /* no vfsub version */
+ err = vfs_getattr(&h_path, st, request, query);
+ if (!err) {
+ if (positive)
+ au_refresh_iattr(inode, st,
+ d_inode(h_path.dentry)->i_nlink);
+ goto out_fill; /* success */
+ }
+ AuTraceErr(err);
+ goto out_di;
+
+out_fill:
+ generic_fillattr(inode, st);
+out_di:
+ di_read_unlock(dentry, AuLock_IR);
+out_si:
+ si_read_unlock(sb);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static const char *aufs_get_link(struct dentry *dentry, struct inode *inode,
+ struct delayed_call *done)
+{
+ const char *ret;
+ struct dentry *h_dentry;
+ struct inode *h_inode;
+ int err;
+ aufs_bindex_t bindex;
+
+ ret = NULL; /* suppress a warning */
+ err = -ECHILD;
+ if (!dentry)
+ goto out;
+
+ err = aufs_read_lock(dentry, AuLock_IR | AuLock_GEN);
+ if (unlikely(err))
+ goto out;
+
+ err = au_d_hashed_positive(dentry);
+ if (unlikely(err))
+ goto out_unlock;
+
+ err = -EINVAL;
+ inode = d_inode(dentry);
+ bindex = au_ibtop(inode);
+ h_inode = au_h_iptr(inode, bindex);
+ if (unlikely(!h_inode->i_op->get_link))
+ goto out_unlock;
+
+ err = -EBUSY;
+ h_dentry = NULL;
+ if (au_dbtop(dentry) <= bindex) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (h_dentry)
+ dget(h_dentry);
+ }
+ if (!h_dentry) {
+ h_dentry = d_find_any_alias(h_inode);
+ if (IS_ERR(h_dentry)) {
+ err = PTR_ERR(h_dentry);
+ goto out_unlock;
+ }
+ }
+ if (unlikely(!h_dentry))
+ goto out_unlock;
+
+ err = 0;
+ AuDbg("%ps\n", h_inode->i_op->get_link);
+ AuDbgDentry(h_dentry);
+ ret = vfs_get_link(h_dentry, done);
+ dput(h_dentry);
+ if (IS_ERR(ret))
+ err = PTR_ERR(ret);
+
+out_unlock:
+ aufs_read_unlock(dentry, AuLock_IR);
+out:
+ if (unlikely(err))
+ ret = ERR_PTR(err);
+ AuTraceErrPtr(ret);
+ return ret;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_is_special(struct inode *inode)
+{
+ return (inode->i_mode & (S_IFBLK | S_IFCHR | S_IFIFO | S_IFSOCK));
+}
+
+static int aufs_update_time(struct inode *inode, struct timespec64 *ts,
+ int flags)
+{
+ int err;
+ aufs_bindex_t bindex;
+ struct super_block *sb;
+ struct inode *h_inode;
+ struct vfsmount *h_mnt;
+
+ sb = inode->i_sb;
+ WARN_ONCE((flags & S_ATIME) && !IS_NOATIME(inode),
+ "unexpected s_flags 0x%lx", sb->s_flags);
+
+ /* mmap_sem might be acquired already, cf. aufs_mmap() */
+ lockdep_off();
+ si_read_lock(sb, AuLock_FLUSH);
+ ii_write_lock_child(inode);
+
+ err = 0;
+ bindex = au_ibtop(inode);
+ h_inode = au_h_iptr(inode, bindex);
+ if (!au_test_ro(sb, bindex, inode)) {
+ h_mnt = au_sbr_mnt(sb, bindex);
+ err = vfsub_mnt_want_write(h_mnt);
+ if (!err) {
+ err = vfsub_update_time(h_inode, ts, flags);
+ vfsub_mnt_drop_write(h_mnt);
+ }
+ } else if (au_is_special(h_inode)) {
+ /*
+ * Never copy-up here.
+ * These special files may already be opened and used for
+ * communicating. If we copied it up, then the communication
+ * would be corrupted.
+ */
+ AuWarn1("timestamps for i%lu are ignored "
+ "since it is on readonly branch (hi%lu).\n",
+ inode->i_ino, h_inode->i_ino);
+ } else if (flags & ~S_ATIME) {
+ err = -EIO;
+ AuIOErr1("unexpected flags 0x%x\n", flags);
+ AuDebugOn(1);
+ }
+
+ if (!err)
+ au_cpup_attr_timesizes(inode);
+ ii_write_unlock(inode);
+ si_read_unlock(sb);
+ lockdep_on();
+
+ if (!err && (flags & S_VERSION))
+ inode_inc_iversion(inode);
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* no getattr version will be set by module.c:aufs_init() */
+struct inode_operations aufs_iop_nogetattr[AuIop_Last],
+ aufs_iop[] = {
+ [AuIop_SYMLINK] = {
+ .permission = aufs_permission,
+#ifdef CONFIG_FS_POSIX_ACL
+ .get_acl = aufs_get_acl,
+ .set_acl = aufs_set_acl, /* unsupport for symlink? */
+#endif
+
+ .setattr = aufs_setattr,
+ .getattr = aufs_getattr,
+
+#ifdef CONFIG_AUFS_XATTR
+ .listxattr = aufs_listxattr,
+#endif
+
+ .get_link = aufs_get_link,
+
+ /* .update_time = aufs_update_time */
+ },
+ [AuIop_DIR] = {
+ .create = aufs_create,
+ .lookup = aufs_lookup,
+ .link = aufs_link,
+ .unlink = aufs_unlink,
+ .symlink = aufs_symlink,
+ .mkdir = aufs_mkdir,
+ .rmdir = aufs_rmdir,
+ .mknod = aufs_mknod,
+ .rename = aufs_rename,
+
+ .permission = aufs_permission,
+#ifdef CONFIG_FS_POSIX_ACL
+ .get_acl = aufs_get_acl,
+ .set_acl = aufs_set_acl,
+#endif
+
+ .setattr = aufs_setattr,
+ .getattr = aufs_getattr,
+
+#ifdef CONFIG_AUFS_XATTR
+ .listxattr = aufs_listxattr,
+#endif
+
+ .update_time = aufs_update_time,
+ .atomic_open = aufs_atomic_open,
+ .tmpfile = aufs_tmpfile
+ },
+ [AuIop_OTHER] = {
+ .permission = aufs_permission,
+#ifdef CONFIG_FS_POSIX_ACL
+ .get_acl = aufs_get_acl,
+ .set_acl = aufs_set_acl,
+#endif
+
+ .setattr = aufs_setattr,
+ .getattr = aufs_getattr,
+
+#ifdef CONFIG_AUFS_XATTR
+ .listxattr = aufs_listxattr,
+#endif
+
+ .update_time = aufs_update_time
+ }
+};
diff --git a/fs/aufs/i_op_add.c b/fs/aufs/i_op_add.c
new file mode 100644
index 0000000000..af6893e610
--- /dev/null
+++ b/fs/aufs/i_op_add.c
@@ -0,0 +1,936 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * inode operations (add entry)
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+/*
+ * final procedure of adding a new entry, except link(2).
+ * remove whiteout, instantiate, copyup the parent dir's times and size
+ * and update version.
+ * if it failed, re-create the removed whiteout.
+ */
+static int epilog(struct inode *dir, aufs_bindex_t bindex,
+ struct dentry *wh_dentry, struct dentry *dentry)
+{
+ int err, rerr;
+ aufs_bindex_t bwh;
+ struct path h_path;
+ struct super_block *sb;
+ struct inode *inode, *h_dir;
+ struct dentry *wh;
+
+ bwh = -1;
+ sb = dir->i_sb;
+ if (wh_dentry) {
+ h_dir = d_inode(wh_dentry->d_parent); /* dir inode is locked */
+ IMustLock(h_dir);
+ AuDebugOn(au_h_iptr(dir, bindex) != h_dir);
+ bwh = au_dbwh(dentry);
+ h_path.dentry = wh_dentry;
+ h_path.mnt = au_sbr_mnt(sb, bindex);
+ err = au_wh_unlink_dentry(au_h_iptr(dir, bindex), &h_path,
+ dentry);
+ if (unlikely(err))
+ goto out;
+ }
+
+ inode = au_new_inode(dentry, /*must_new*/1);
+ if (!IS_ERR(inode)) {
+ d_instantiate(dentry, inode);
+ dir = d_inode(dentry->d_parent); /* dir inode is locked */
+ IMustLock(dir);
+ au_dir_ts(dir, bindex);
+ inode_inc_iversion(dir);
+ au_fhsm_wrote(sb, bindex, /*force*/0);
+ return 0; /* success */
+ }
+
+ err = PTR_ERR(inode);
+ if (!wh_dentry)
+ goto out;
+
+ /* revert */
+ /* dir inode is locked */
+ wh = au_wh_create(dentry, bwh, wh_dentry->d_parent);
+ rerr = PTR_ERR(wh);
+ if (IS_ERR(wh)) {
+ AuIOErr("%pd reverting whiteout failed(%d, %d)\n",
+ dentry, err, rerr);
+ err = -EIO;
+ } else
+ dput(wh);
+
+out:
+ return err;
+}
+
+static int au_d_may_add(struct dentry *dentry)
+{
+ int err;
+
+ err = 0;
+ if (unlikely(d_unhashed(dentry)))
+ err = -ENOENT;
+ if (unlikely(d_really_is_positive(dentry)))
+ err = -EEXIST;
+ return err;
+}
+
+/*
+ * simple tests for the adding inode operations.
+ * following the checks in vfs, plus the parent-child relationship.
+ */
+int au_may_add(struct dentry *dentry, aufs_bindex_t bindex,
+ struct dentry *h_parent, int isdir)
+{
+ int err;
+ umode_t h_mode;
+ struct dentry *h_dentry;
+ struct inode *h_inode;
+
+ err = -ENAMETOOLONG;
+ if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN))
+ goto out;
+
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (d_really_is_negative(dentry)) {
+ err = -EEXIST;
+ if (unlikely(d_is_positive(h_dentry)))
+ goto out;
+ } else {
+ /* rename(2) case */
+ err = -EIO;
+ if (unlikely(d_is_negative(h_dentry)))
+ goto out;
+ h_inode = d_inode(h_dentry);
+ if (unlikely(!h_inode->i_nlink))
+ goto out;
+
+ h_mode = h_inode->i_mode;
+ if (!isdir) {
+ err = -EISDIR;
+ if (unlikely(S_ISDIR(h_mode)))
+ goto out;
+ } else if (unlikely(!S_ISDIR(h_mode))) {
+ err = -ENOTDIR;
+ goto out;
+ }
+ }
+
+ err = 0;
+ /* expected parent dir is locked */
+ if (unlikely(h_parent != h_dentry->d_parent))
+ err = -EIO;
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/*
+ * initial procedure of adding a new entry.
+ * prepare writable branch and the parent dir, lock it,
+ * and lookup whiteout for the new entry.
+ */
+static struct dentry*
+lock_hdir_lkup_wh(struct dentry *dentry, struct au_dtime *dt,
+ struct dentry *src_dentry, struct au_pin *pin,
+ struct au_wr_dir_args *wr_dir_args)
+{
+ struct dentry *wh_dentry, *h_parent;
+ struct super_block *sb;
+ struct au_branch *br;
+ int err;
+ unsigned int udba;
+ aufs_bindex_t bcpup;
+
+ AuDbg("%pd\n", dentry);
+
+ err = au_wr_dir(dentry, src_dentry, wr_dir_args);
+ bcpup = err;
+ wh_dentry = ERR_PTR(err);
+ if (unlikely(err < 0))
+ goto out;
+
+ sb = dentry->d_sb;
+ udba = au_opt_udba(sb);
+ err = au_pin(pin, dentry, bcpup, udba,
+ AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+ wh_dentry = ERR_PTR(err);
+ if (unlikely(err))
+ goto out;
+
+ h_parent = au_pinned_h_parent(pin);
+ if (udba != AuOpt_UDBA_NONE
+ && au_dbtop(dentry) == bcpup)
+ err = au_may_add(dentry, bcpup, h_parent,
+ au_ftest_wrdir(wr_dir_args->flags, ISDIR));
+ else if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN))
+ err = -ENAMETOOLONG;
+ wh_dentry = ERR_PTR(err);
+ if (unlikely(err))
+ goto out_unpin;
+
+ br = au_sbr(sb, bcpup);
+ if (dt) {
+ struct path tmp = {
+ .dentry = h_parent,
+ .mnt = au_br_mnt(br)
+ };
+ au_dtime_store(dt, au_pinned_parent(pin), &tmp);
+ }
+
+ wh_dentry = NULL;
+ if (bcpup != au_dbwh(dentry))
+ goto out; /* success */
+
+ /*
+ * ENAMETOOLONG here means that if we allowed create such name, then it
+ * would not be able to removed in the future. So we don't allow such
+ * name here and we don't handle ENAMETOOLONG differently here.
+ */
+ wh_dentry = au_wh_lkup(h_parent, &dentry->d_name, br);
+
+out_unpin:
+ if (IS_ERR(wh_dentry))
+ au_unpin(pin);
+out:
+ return wh_dentry;
+}
+
+/* ---------------------------------------------------------------------- */
+
+enum { Mknod, Symlink, Creat };
+struct simple_arg {
+ int type;
+ union {
+ struct {
+ umode_t mode;
+ bool want_excl;
+ bool try_aopen;
+ struct vfsub_aopen_args *aopen;
+ } c;
+ struct {
+ const char *symname;
+ } s;
+ struct {
+ umode_t mode;
+ dev_t dev;
+ } m;
+ } u;
+};
+
+static int add_simple(struct inode *dir, struct dentry *dentry,
+ struct simple_arg *arg)
+{
+ int err, rerr;
+ aufs_bindex_t btop;
+ unsigned char created;
+ const unsigned char try_aopen
+ = (arg->type == Creat && arg->u.c.try_aopen);
+ struct vfsub_aopen_args *aopen = arg->u.c.aopen;
+ struct dentry *wh_dentry, *parent;
+ struct inode *h_dir;
+ struct super_block *sb;
+ struct au_branch *br;
+ /* to reduce stack size */
+ struct {
+ struct au_dtime dt;
+ struct au_pin pin;
+ struct path h_path;
+ struct au_wr_dir_args wr_dir_args;
+ } *a;
+
+ AuDbg("%pd\n", dentry);
+ IMustLock(dir);
+
+ err = -ENOMEM;
+ a = kmalloc(sizeof(*a), GFP_NOFS);
+ if (unlikely(!a))
+ goto out;
+ a->wr_dir_args.force_btgt = -1;
+ a->wr_dir_args.flags = AuWrDir_ADD_ENTRY;
+
+ parent = dentry->d_parent; /* dir inode is locked */
+ if (!try_aopen) {
+ err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN);
+ if (unlikely(err))
+ goto out_free;
+ }
+ err = au_d_may_add(dentry);
+ if (unlikely(err))
+ goto out_unlock;
+ if (!try_aopen)
+ di_write_lock_parent(parent);
+ wh_dentry = lock_hdir_lkup_wh(dentry, &a->dt, /*src_dentry*/NULL,
+ &a->pin, &a->wr_dir_args);
+ err = PTR_ERR(wh_dentry);
+ if (IS_ERR(wh_dentry))
+ goto out_parent;
+
+ btop = au_dbtop(dentry);
+ sb = dentry->d_sb;
+ br = au_sbr(sb, btop);
+ a->h_path.dentry = au_h_dptr(dentry, btop);
+ a->h_path.mnt = au_br_mnt(br);
+ h_dir = au_pinned_h_dir(&a->pin);
+ switch (arg->type) {
+ case Creat:
+ if (!try_aopen || !h_dir->i_op->atomic_open) {
+ err = vfsub_create(h_dir, &a->h_path, arg->u.c.mode,
+ arg->u.c.want_excl);
+ created = !err;
+ if (!err && try_aopen)
+ aopen->file->f_mode |= FMODE_CREATED;
+ } else {
+ aopen->br = br;
+ err = vfsub_atomic_open(h_dir, a->h_path.dentry, aopen);
+ AuDbg("err %d\n", err);
+ AuDbgFile(aopen->file);
+ created = err >= 0
+ && !!(aopen->file->f_mode & FMODE_CREATED);
+ }
+ break;
+ case Symlink:
+ err = vfsub_symlink(h_dir, &a->h_path, arg->u.s.symname);
+ created = !err;
+ break;
+ case Mknod:
+ err = vfsub_mknod(h_dir, &a->h_path, arg->u.m.mode,
+ arg->u.m.dev);
+ created = !err;
+ break;
+ default:
+ BUG();
+ }
+ if (unlikely(err < 0))
+ goto out_unpin;
+
+ err = epilog(dir, btop, wh_dentry, dentry);
+ if (!err)
+ goto out_unpin; /* success */
+
+ /* revert */
+ if (created /* && d_is_positive(a->h_path.dentry) */) {
+ /* no delegation since it is just created */
+ rerr = vfsub_unlink(h_dir, &a->h_path, /*delegated*/NULL,
+ /*force*/0);
+ if (rerr) {
+ AuIOErr("%pd revert failure(%d, %d)\n",
+ dentry, err, rerr);
+ err = -EIO;
+ }
+ au_dtime_revert(&a->dt);
+ }
+ if (try_aopen && h_dir->i_op->atomic_open
+ && (aopen->file->f_mode & FMODE_OPENED))
+ /* aopen->file is still opened */
+ au_lcnt_dec(&aopen->br->br_nfiles);
+
+out_unpin:
+ au_unpin(&a->pin);
+ dput(wh_dentry);
+out_parent:
+ if (!try_aopen)
+ di_write_unlock(parent);
+out_unlock:
+ if (unlikely(err)) {
+ au_update_dbtop(dentry);
+ d_drop(dentry);
+ }
+ if (!try_aopen)
+ aufs_read_unlock(dentry, AuLock_DW);
+out_free:
+ au_kfree_rcu(a);
+out:
+ return err;
+}
+
+int aufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
+ dev_t dev)
+{
+ struct simple_arg arg = {
+ .type = Mknod,
+ .u.m = {
+ .mode = mode,
+ .dev = dev
+ }
+ };
+ return add_simple(dir, dentry, &arg);
+}
+
+int aufs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
+{
+ struct simple_arg arg = {
+ .type = Symlink,
+ .u.s.symname = symname
+ };
+ return add_simple(dir, dentry, &arg);
+}
+
+int aufs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
+ bool want_excl)
+{
+ struct simple_arg arg = {
+ .type = Creat,
+ .u.c = {
+ .mode = mode,
+ .want_excl = want_excl
+ }
+ };
+ return add_simple(dir, dentry, &arg);
+}
+
+int au_aopen_or_create(struct inode *dir, struct dentry *dentry,
+ struct vfsub_aopen_args *aopen_args)
+{
+ struct simple_arg arg = {
+ .type = Creat,
+ .u.c = {
+ .mode = aopen_args->create_mode,
+ .want_excl = aopen_args->open_flag & O_EXCL,
+ .try_aopen = true,
+ .aopen = aopen_args
+ }
+ };
+ return add_simple(dir, dentry, &arg);
+}
+
+int aufs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
+{
+ int err;
+ aufs_bindex_t bindex;
+ struct super_block *sb;
+ struct dentry *parent, *h_parent, *h_dentry;
+ struct inode *h_dir, *inode;
+ struct vfsmount *h_mnt;
+ struct au_wr_dir_args wr_dir_args = {
+ .force_btgt = -1,
+ .flags = AuWrDir_TMPFILE
+ };
+
+ /* copy-up may happen */
+ inode_lock(dir);
+
+ sb = dir->i_sb;
+ err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+ if (unlikely(err))
+ goto out;
+
+ err = au_di_init(dentry);
+ if (unlikely(err))
+ goto out_si;
+
+ err = -EBUSY;
+ parent = d_find_any_alias(dir);
+ AuDebugOn(!parent);
+ di_write_lock_parent(parent);
+ if (unlikely(d_inode(parent) != dir))
+ goto out_parent;
+
+ err = au_digen_test(parent, au_sigen(sb));
+ if (unlikely(err))
+ goto out_parent;
+
+ bindex = au_dbtop(parent);
+ au_set_dbtop(dentry, bindex);
+ au_set_dbbot(dentry, bindex);
+ err = au_wr_dir(dentry, /*src_dentry*/NULL, &wr_dir_args);
+ bindex = err;
+ if (unlikely(err < 0))
+ goto out_parent;
+
+ err = -EOPNOTSUPP;
+ h_dir = au_h_iptr(dir, bindex);
+ if (unlikely(!h_dir->i_op->tmpfile))
+ goto out_parent;
+
+ h_mnt = au_sbr_mnt(sb, bindex);
+ err = vfsub_mnt_want_write(h_mnt);
+ if (unlikely(err))
+ goto out_parent;
+
+ h_parent = au_h_dptr(parent, bindex);
+ h_dentry = vfs_tmpfile(h_parent, mode, /*open_flag*/0);
+ if (IS_ERR(h_dentry)) {
+ err = PTR_ERR(h_dentry);
+ goto out_mnt;
+ }
+
+ au_set_dbtop(dentry, bindex);
+ au_set_dbbot(dentry, bindex);
+ au_set_h_dptr(dentry, bindex, dget(h_dentry));
+ inode = au_new_inode(dentry, /*must_new*/1);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
+ au_set_h_dptr(dentry, bindex, NULL);
+ au_set_dbtop(dentry, -1);
+ au_set_dbbot(dentry, -1);
+ } else {
+ if (!inode->i_nlink)
+ set_nlink(inode, 1);
+ d_tmpfile(dentry, inode);
+ au_di(dentry)->di_tmpfile = 1;
+
+ /* update without i_mutex */
+ if (au_ibtop(dir) == au_dbtop(dentry))
+ au_cpup_attr_timesizes(dir);
+ }
+ dput(h_dentry);
+
+out_mnt:
+ vfsub_mnt_drop_write(h_mnt);
+out_parent:
+ di_write_unlock(parent);
+ dput(parent);
+ di_write_unlock(dentry);
+ if (unlikely(err)) {
+ au_di_fin(dentry);
+ dentry->d_fsdata = NULL;
+ }
+out_si:
+ si_read_unlock(sb);
+out:
+ inode_unlock(dir);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct au_link_args {
+ aufs_bindex_t bdst, bsrc;
+ struct au_pin pin;
+ struct path h_path;
+ struct dentry *src_parent, *parent;
+};
+
+static int au_cpup_before_link(struct dentry *src_dentry,
+ struct au_link_args *a)
+{
+ int err;
+ struct dentry *h_src_dentry;
+ struct au_cp_generic cpg = {
+ .dentry = src_dentry,
+ .bdst = a->bdst,
+ .bsrc = a->bsrc,
+ .len = -1,
+ .pin = &a->pin,
+ .flags = AuCpup_DTIME | AuCpup_HOPEN /* | AuCpup_KEEPLINO */
+ };
+
+ di_read_lock_parent(a->src_parent, AuLock_IR);
+ err = au_test_and_cpup_dirs(src_dentry, a->bdst);
+ if (unlikely(err))
+ goto out;
+
+ h_src_dentry = au_h_dptr(src_dentry, a->bsrc);
+ err = au_pin(&a->pin, src_dentry, a->bdst,
+ au_opt_udba(src_dentry->d_sb),
+ AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+ if (unlikely(err))
+ goto out;
+
+ err = au_sio_cpup_simple(&cpg);
+ au_unpin(&a->pin);
+
+out:
+ di_read_unlock(a->src_parent, AuLock_IR);
+ return err;
+}
+
+static int au_cpup_or_link(struct dentry *src_dentry, struct dentry *dentry,
+ struct au_link_args *a)
+{
+ int err;
+ unsigned char plink;
+ aufs_bindex_t bbot;
+ struct dentry *h_src_dentry;
+ struct inode *h_inode, *inode, *delegated;
+ struct super_block *sb;
+ struct file *h_file;
+
+ plink = 0;
+ h_inode = NULL;
+ sb = src_dentry->d_sb;
+ inode = d_inode(src_dentry);
+ if (au_ibtop(inode) <= a->bdst)
+ h_inode = au_h_iptr(inode, a->bdst);
+ if (!h_inode || !h_inode->i_nlink) {
+ /* copyup src_dentry as the name of dentry. */
+ bbot = au_dbbot(dentry);
+ if (bbot < a->bsrc)
+ au_set_dbbot(dentry, a->bsrc);
+ au_set_h_dptr(dentry, a->bsrc,
+ dget(au_h_dptr(src_dentry, a->bsrc)));
+ dget(a->h_path.dentry);
+ au_set_h_dptr(dentry, a->bdst, NULL);
+ AuDbg("temporary d_inode...\n");
+ spin_lock(&dentry->d_lock);
+ dentry->d_inode = d_inode(src_dentry); /* tmp */
+ spin_unlock(&dentry->d_lock);
+ h_file = au_h_open_pre(dentry, a->bsrc, /*force_wr*/0);
+ if (IS_ERR(h_file))
+ err = PTR_ERR(h_file);
+ else {
+ struct au_cp_generic cpg = {
+ .dentry = dentry,
+ .bdst = a->bdst,
+ .bsrc = -1,
+ .len = -1,
+ .pin = &a->pin,
+ .flags = AuCpup_KEEPLINO
+ };
+ err = au_sio_cpup_simple(&cpg);
+ au_h_open_post(dentry, a->bsrc, h_file);
+ if (!err) {
+ dput(a->h_path.dentry);
+ a->h_path.dentry = au_h_dptr(dentry, a->bdst);
+ } else
+ au_set_h_dptr(dentry, a->bdst,
+ a->h_path.dentry);
+ }
+ spin_lock(&dentry->d_lock);
+ dentry->d_inode = NULL; /* restore */
+ spin_unlock(&dentry->d_lock);
+ AuDbg("temporary d_inode...done\n");
+ au_set_h_dptr(dentry, a->bsrc, NULL);
+ au_set_dbbot(dentry, bbot);
+ } else {
+ /* the inode of src_dentry already exists on a.bdst branch */
+ h_src_dentry = d_find_alias(h_inode);
+ if (!h_src_dentry && au_plink_test(inode)) {
+ plink = 1;
+ h_src_dentry = au_plink_lkup(inode, a->bdst);
+ err = PTR_ERR(h_src_dentry);
+ if (IS_ERR(h_src_dentry))
+ goto out;
+
+ if (unlikely(d_is_negative(h_src_dentry))) {
+ dput(h_src_dentry);
+ h_src_dentry = NULL;
+ }
+
+ }
+ if (h_src_dentry) {
+ delegated = NULL;
+ err = vfsub_link(h_src_dentry, au_pinned_h_dir(&a->pin),
+ &a->h_path, &delegated);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal link\n");
+ iput(delegated);
+ }
+ dput(h_src_dentry);
+ } else {
+ AuIOErr("no dentry found for hi%lu on b%d\n",
+ h_inode->i_ino, a->bdst);
+ err = -EIO;
+ }
+ }
+
+ if (!err && !plink)
+ au_plink_append(inode, a->bdst, a->h_path.dentry);
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+int aufs_link(struct dentry *src_dentry, struct inode *dir,
+ struct dentry *dentry)
+{
+ int err, rerr;
+ struct au_dtime dt;
+ struct au_link_args *a;
+ struct dentry *wh_dentry, *h_src_dentry;
+ struct inode *inode, *delegated;
+ struct super_block *sb;
+ struct au_wr_dir_args wr_dir_args = {
+ /* .force_btgt = -1, */
+ .flags = AuWrDir_ADD_ENTRY
+ };
+
+ IMustLock(dir);
+ inode = d_inode(src_dentry);
+ IMustLock(inode);
+
+ err = -ENOMEM;
+ a = kzalloc(sizeof(*a), GFP_NOFS);
+ if (unlikely(!a))
+ goto out;
+
+ a->parent = dentry->d_parent; /* dir inode is locked */
+ err = aufs_read_and_write_lock2(dentry, src_dentry,
+ AuLock_NOPLM | AuLock_GEN);
+ if (unlikely(err))
+ goto out_kfree;
+ err = au_d_linkable(src_dentry);
+ if (unlikely(err))
+ goto out_unlock;
+ err = au_d_may_add(dentry);
+ if (unlikely(err))
+ goto out_unlock;
+
+ a->src_parent = dget_parent(src_dentry);
+ wr_dir_args.force_btgt = au_ibtop(inode);
+
+ di_write_lock_parent(a->parent);
+ wr_dir_args.force_btgt = au_wbr(dentry, wr_dir_args.force_btgt);
+ wh_dentry = lock_hdir_lkup_wh(dentry, &dt, src_dentry, &a->pin,
+ &wr_dir_args);
+ err = PTR_ERR(wh_dentry);
+ if (IS_ERR(wh_dentry))
+ goto out_parent;
+
+ err = 0;
+ sb = dentry->d_sb;
+ a->bdst = au_dbtop(dentry);
+ a->h_path.dentry = au_h_dptr(dentry, a->bdst);
+ a->h_path.mnt = au_sbr_mnt(sb, a->bdst);
+ a->bsrc = au_ibtop(inode);
+ h_src_dentry = au_h_d_alias(src_dentry, a->bsrc);
+ if (!h_src_dentry && au_di(src_dentry)->di_tmpfile)
+ h_src_dentry = dget(au_hi_wh(inode, a->bsrc));
+ if (!h_src_dentry) {
+ a->bsrc = au_dbtop(src_dentry);
+ h_src_dentry = au_h_d_alias(src_dentry, a->bsrc);
+ AuDebugOn(!h_src_dentry);
+ } else if (IS_ERR(h_src_dentry)) {
+ err = PTR_ERR(h_src_dentry);
+ goto out_parent;
+ }
+
+ /*
+ * aufs doesn't touch the credential so
+ * security_dentry_create_files_as() is unnecessary.
+ */
+ if (au_opt_test(au_mntflags(sb), PLINK)) {
+ if (a->bdst < a->bsrc
+ /* && h_src_dentry->d_sb != a->h_path.dentry->d_sb */)
+ err = au_cpup_or_link(src_dentry, dentry, a);
+ else {
+ delegated = NULL;
+ err = vfsub_link(h_src_dentry, au_pinned_h_dir(&a->pin),
+ &a->h_path, &delegated);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal link\n");
+ iput(delegated);
+ }
+ }
+ dput(h_src_dentry);
+ } else {
+ /*
+ * copyup src_dentry to the branch we process,
+ * and then link(2) to it.
+ */
+ dput(h_src_dentry);
+ if (a->bdst < a->bsrc
+ /* && h_src_dentry->d_sb != a->h_path.dentry->d_sb */) {
+ au_unpin(&a->pin);
+ di_write_unlock(a->parent);
+ err = au_cpup_before_link(src_dentry, a);
+ di_write_lock_parent(a->parent);
+ if (!err)
+ err = au_pin(&a->pin, dentry, a->bdst,
+ au_opt_udba(sb),
+ AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+ if (unlikely(err))
+ goto out_wh;
+ }
+ if (!err) {
+ h_src_dentry = au_h_dptr(src_dentry, a->bdst);
+ err = -ENOENT;
+ if (h_src_dentry && d_is_positive(h_src_dentry)) {
+ delegated = NULL;
+ err = vfsub_link(h_src_dentry,
+ au_pinned_h_dir(&a->pin),
+ &a->h_path, &delegated);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry"
+ " for NFSv4 delegation"
+ " for an internal link\n");
+ iput(delegated);
+ }
+ }
+ }
+ }
+ if (unlikely(err))
+ goto out_unpin;
+
+ if (wh_dentry) {
+ a->h_path.dentry = wh_dentry;
+ err = au_wh_unlink_dentry(au_pinned_h_dir(&a->pin), &a->h_path,
+ dentry);
+ if (unlikely(err))
+ goto out_revert;
+ }
+
+ au_dir_ts(dir, a->bdst);
+ inode_inc_iversion(dir);
+ inc_nlink(inode);
+ inode->i_ctime = dir->i_ctime;
+ d_instantiate(dentry, au_igrab(inode));
+ if (d_unhashed(a->h_path.dentry))
+ /* some filesystem calls d_drop() */
+ d_drop(dentry);
+ /* some filesystems consume an inode even hardlink */
+ au_fhsm_wrote(sb, a->bdst, /*force*/0);
+ goto out_unpin; /* success */
+
+out_revert:
+ /* no delegation since it is just created */
+ rerr = vfsub_unlink(au_pinned_h_dir(&a->pin), &a->h_path,
+ /*delegated*/NULL, /*force*/0);
+ if (unlikely(rerr)) {
+ AuIOErr("%pd reverting failed(%d, %d)\n", dentry, err, rerr);
+ err = -EIO;
+ }
+ au_dtime_revert(&dt);
+out_unpin:
+ au_unpin(&a->pin);
+out_wh:
+ dput(wh_dentry);
+out_parent:
+ di_write_unlock(a->parent);
+ dput(a->src_parent);
+out_unlock:
+ if (unlikely(err)) {
+ au_update_dbtop(dentry);
+ d_drop(dentry);
+ }
+ aufs_read_and_write_unlock2(dentry, src_dentry);
+out_kfree:
+ au_kfree_rcu(a);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+int aufs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
+{
+ int err, rerr;
+ aufs_bindex_t bindex;
+ unsigned char diropq;
+ struct path h_path;
+ struct dentry *wh_dentry, *parent, *opq_dentry;
+ struct inode *h_inode;
+ struct super_block *sb;
+ struct {
+ struct au_pin pin;
+ struct au_dtime dt;
+ } *a; /* reduce the stack usage */
+ struct au_wr_dir_args wr_dir_args = {
+ .force_btgt = -1,
+ .flags = AuWrDir_ADD_ENTRY | AuWrDir_ISDIR
+ };
+
+ IMustLock(dir);
+
+ err = -ENOMEM;
+ a = kmalloc(sizeof(*a), GFP_NOFS);
+ if (unlikely(!a))
+ goto out;
+
+ err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN);
+ if (unlikely(err))
+ goto out_free;
+ err = au_d_may_add(dentry);
+ if (unlikely(err))
+ goto out_unlock;
+
+ parent = dentry->d_parent; /* dir inode is locked */
+ di_write_lock_parent(parent);
+ wh_dentry = lock_hdir_lkup_wh(dentry, &a->dt, /*src_dentry*/NULL,
+ &a->pin, &wr_dir_args);
+ err = PTR_ERR(wh_dentry);
+ if (IS_ERR(wh_dentry))
+ goto out_parent;
+
+ sb = dentry->d_sb;
+ bindex = au_dbtop(dentry);
+ h_path.dentry = au_h_dptr(dentry, bindex);
+ h_path.mnt = au_sbr_mnt(sb, bindex);
+ err = vfsub_mkdir(au_pinned_h_dir(&a->pin), &h_path, mode);
+ if (unlikely(err))
+ goto out_unpin;
+
+ /* make the dir opaque */
+ diropq = 0;
+ h_inode = d_inode(h_path.dentry);
+ if (wh_dentry
+ || au_opt_test(au_mntflags(sb), ALWAYS_DIROPQ)) {
+ inode_lock_nested(h_inode, AuLsc_I_CHILD);
+ opq_dentry = au_diropq_create(dentry, bindex);
+ inode_unlock(h_inode);
+ err = PTR_ERR(opq_dentry);
+ if (IS_ERR(opq_dentry))
+ goto out_dir;
+ dput(opq_dentry);
+ diropq = 1;
+ }
+
+ err = epilog(dir, bindex, wh_dentry, dentry);
+ if (!err) {
+ inc_nlink(dir);
+ goto out_unpin; /* success */
+ }
+
+ /* revert */
+ if (diropq) {
+ AuLabel(revert opq);
+ inode_lock_nested(h_inode, AuLsc_I_CHILD);
+ rerr = au_diropq_remove(dentry, bindex);
+ inode_unlock(h_inode);
+ if (rerr) {
+ AuIOErr("%pd reverting diropq failed(%d, %d)\n",
+ dentry, err, rerr);
+ err = -EIO;
+ }
+ }
+
+out_dir:
+ AuLabel(revert dir);
+ rerr = vfsub_rmdir(au_pinned_h_dir(&a->pin), &h_path);
+ if (rerr) {
+ AuIOErr("%pd reverting dir failed(%d, %d)\n",
+ dentry, err, rerr);
+ err = -EIO;
+ }
+ au_dtime_revert(&a->dt);
+out_unpin:
+ au_unpin(&a->pin);
+ dput(wh_dentry);
+out_parent:
+ di_write_unlock(parent);
+out_unlock:
+ if (unlikely(err)) {
+ au_update_dbtop(dentry);
+ d_drop(dentry);
+ }
+ aufs_read_unlock(dentry, AuLock_DW);
+out_free:
+ au_kfree_rcu(a);
+out:
+ return err;
+}
diff --git a/fs/aufs/i_op_del.c b/fs/aufs/i_op_del.c
new file mode 100644
index 0000000000..1c459dbea5
--- /dev/null
+++ b/fs/aufs/i_op_del.c
@@ -0,0 +1,513 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * inode operations (del entry)
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+/*
+ * decide if a new whiteout for @dentry is necessary or not.
+ * when it is necessary, prepare the parent dir for the upper branch whose
+ * branch index is @bcpup for creation. the actual creation of the whiteout will
+ * be done by caller.
+ * return value:
+ * 0: wh is unnecessary
+ * plus: wh is necessary
+ * minus: error
+ */
+int au_wr_dir_need_wh(struct dentry *dentry, int isdir, aufs_bindex_t *bcpup)
+{
+ int need_wh, err;
+ aufs_bindex_t btop;
+ struct super_block *sb;
+
+ sb = dentry->d_sb;
+ btop = au_dbtop(dentry);
+ if (*bcpup < 0) {
+ *bcpup = btop;
+ if (au_test_ro(sb, btop, d_inode(dentry))) {
+ err = AuWbrCopyup(au_sbi(sb), dentry);
+ *bcpup = err;
+ if (unlikely(err < 0))
+ goto out;
+ }
+ } else
+ AuDebugOn(btop < *bcpup
+ || au_test_ro(sb, *bcpup, d_inode(dentry)));
+ AuDbg("bcpup %d, btop %d\n", *bcpup, btop);
+
+ if (*bcpup != btop) {
+ err = au_cpup_dirs(dentry, *bcpup);
+ if (unlikely(err))
+ goto out;
+ need_wh = 1;
+ } else {
+ struct au_dinfo *dinfo, *tmp;
+
+ need_wh = -ENOMEM;
+ dinfo = au_di(dentry);
+ tmp = au_di_alloc(sb, AuLsc_DI_TMP);
+ if (tmp) {
+ au_di_cp(tmp, dinfo);
+ au_di_swap(tmp, dinfo);
+ /* returns the number of positive dentries */
+ need_wh = au_lkup_dentry(dentry, btop + 1,
+ /* AuLkup_IGNORE_PERM */ 0);
+ au_di_swap(tmp, dinfo);
+ au_rw_write_unlock(&tmp->di_rwsem);
+ au_di_free(tmp);
+ }
+ }
+ AuDbg("need_wh %d\n", need_wh);
+ err = need_wh;
+
+out:
+ return err;
+}
+
+/*
+ * simple tests for the del-entry operations.
+ * following the checks in vfs, plus the parent-child relationship.
+ */
+int au_may_del(struct dentry *dentry, aufs_bindex_t bindex,
+ struct dentry *h_parent, int isdir)
+{
+ int err;
+ umode_t h_mode;
+ struct dentry *h_dentry, *h_latest;
+ struct inode *h_inode;
+
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (d_really_is_positive(dentry)) {
+ err = -ENOENT;
+ if (unlikely(d_is_negative(h_dentry)))
+ goto out;
+ h_inode = d_inode(h_dentry);
+ if (unlikely(!h_inode->i_nlink))
+ goto out;
+
+ h_mode = h_inode->i_mode;
+ if (!isdir) {
+ err = -EISDIR;
+ if (unlikely(S_ISDIR(h_mode)))
+ goto out;
+ } else if (unlikely(!S_ISDIR(h_mode))) {
+ err = -ENOTDIR;
+ goto out;
+ }
+ } else {
+ /* rename(2) case */
+ err = -EIO;
+ if (unlikely(d_is_positive(h_dentry)))
+ goto out;
+ }
+
+ err = -ENOENT;
+ /* expected parent dir is locked */
+ if (unlikely(h_parent != h_dentry->d_parent))
+ goto out;
+ err = 0;
+
+ /*
+ * rmdir a dir may break the consistency on some filesystem.
+ * let's try heavy test.
+ */
+ err = -EACCES;
+ if (unlikely(!au_opt_test(au_mntflags(dentry->d_sb), DIRPERM1)
+ && au_test_h_perm(d_inode(h_parent),
+ MAY_EXEC | MAY_WRITE)))
+ goto out;
+
+ h_latest = au_sio_lkup_one(&dentry->d_name, h_parent);
+ err = -EIO;
+ if (IS_ERR(h_latest))
+ goto out;
+ if (h_latest == h_dentry)
+ err = 0;
+ dput(h_latest);
+
+out:
+ return err;
+}
+
+/*
+ * decide the branch where we operate for @dentry. the branch index will be set
+ * @rbcpup. after deciding it, 'pin' it and store the timestamps of the parent
+ * dir for reverting.
+ * when a new whiteout is necessary, create it.
+ */
+static struct dentry*
+lock_hdir_create_wh(struct dentry *dentry, int isdir, aufs_bindex_t *rbcpup,
+ struct au_dtime *dt, struct au_pin *pin)
+{
+ struct dentry *wh_dentry;
+ struct super_block *sb;
+ struct path h_path;
+ int err, need_wh;
+ unsigned int udba;
+ aufs_bindex_t bcpup;
+
+ need_wh = au_wr_dir_need_wh(dentry, isdir, rbcpup);
+ wh_dentry = ERR_PTR(need_wh);
+ if (unlikely(need_wh < 0))
+ goto out;
+
+ sb = dentry->d_sb;
+ udba = au_opt_udba(sb);
+ bcpup = *rbcpup;
+ err = au_pin(pin, dentry, bcpup, udba,
+ AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+ wh_dentry = ERR_PTR(err);
+ if (unlikely(err))
+ goto out;
+
+ h_path.dentry = au_pinned_h_parent(pin);
+ if (udba != AuOpt_UDBA_NONE
+ && au_dbtop(dentry) == bcpup) {
+ err = au_may_del(dentry, bcpup, h_path.dentry, isdir);
+ wh_dentry = ERR_PTR(err);
+ if (unlikely(err))
+ goto out_unpin;
+ }
+
+ h_path.mnt = au_sbr_mnt(sb, bcpup);
+ au_dtime_store(dt, au_pinned_parent(pin), &h_path);
+ wh_dentry = NULL;
+ if (!need_wh)
+ goto out; /* success, no need to create whiteout */
+
+ wh_dentry = au_wh_create(dentry, bcpup, h_path.dentry);
+ if (IS_ERR(wh_dentry))
+ goto out_unpin;
+
+ /* returns with the parent is locked and wh_dentry is dget-ed */
+ goto out; /* success */
+
+out_unpin:
+ au_unpin(pin);
+out:
+ return wh_dentry;
+}
+
+/*
+ * when removing a dir, rename it to a unique temporary whiteout-ed name first
+ * in order to be revertible and save time for removing many child whiteouts
+ * under the dir.
+ * returns 1 when there are too many child whiteout and caller should remove
+ * them asynchronously. returns 0 when the number of children is enough small to
+ * remove now or the branch fs is a remote fs.
+ * otherwise return an error.
+ */
+static int renwh_and_rmdir(struct dentry *dentry, aufs_bindex_t bindex,
+ struct au_nhash *whlist, struct inode *dir)
+{
+ int rmdir_later, err, dirwh;
+ struct dentry *h_dentry;
+ struct super_block *sb;
+ struct inode *inode;
+
+ sb = dentry->d_sb;
+ SiMustAnyLock(sb);
+ h_dentry = au_h_dptr(dentry, bindex);
+ err = au_whtmp_ren(h_dentry, au_sbr(sb, bindex));
+ if (unlikely(err))
+ goto out;
+
+ /* stop monitoring */
+ inode = d_inode(dentry);
+ au_hn_free(au_hi(inode, bindex));
+
+ if (!au_test_fs_remote(h_dentry->d_sb)) {
+ dirwh = au_sbi(sb)->si_dirwh;
+ rmdir_later = (dirwh <= 1);
+ if (!rmdir_later)
+ rmdir_later = au_nhash_test_longer_wh(whlist, bindex,
+ dirwh);
+ if (rmdir_later)
+ return rmdir_later;
+ }
+
+ err = au_whtmp_rmdir(dir, bindex, h_dentry, whlist);
+ if (unlikely(err)) {
+ AuIOErr("rmdir %pd, b%d failed, %d. ignored\n",
+ h_dentry, bindex, err);
+ err = 0;
+ }
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/*
+ * final procedure for deleting a entry.
+ * maintain dentry and iattr.
+ */
+static void epilog(struct inode *dir, struct dentry *dentry,
+ aufs_bindex_t bindex)
+{
+ struct inode *inode;
+
+ inode = d_inode(dentry);
+ d_drop(dentry);
+ inode->i_ctime = dir->i_ctime;
+
+ au_dir_ts(dir, bindex);
+ inode_inc_iversion(dir);
+}
+
+/*
+ * when an error happened, remove the created whiteout and revert everything.
+ */
+static int do_revert(int err, struct inode *dir, aufs_bindex_t bindex,
+ aufs_bindex_t bwh, struct dentry *wh_dentry,
+ struct dentry *dentry, struct au_dtime *dt)
+{
+ int rerr;
+ struct path h_path = {
+ .dentry = wh_dentry,
+ .mnt = au_sbr_mnt(dir->i_sb, bindex)
+ };
+
+ rerr = au_wh_unlink_dentry(au_h_iptr(dir, bindex), &h_path, dentry);
+ if (!rerr) {
+ au_set_dbwh(dentry, bwh);
+ au_dtime_revert(dt);
+ return 0;
+ }
+
+ AuIOErr("%pd reverting whiteout failed(%d, %d)\n", dentry, err, rerr);
+ return -EIO;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int aufs_unlink(struct inode *dir, struct dentry *dentry)
+{
+ int err;
+ aufs_bindex_t bwh, bindex, btop;
+ struct inode *inode, *h_dir, *delegated;
+ struct dentry *parent, *wh_dentry;
+ /* to reduce stack size */
+ struct {
+ struct au_dtime dt;
+ struct au_pin pin;
+ struct path h_path;
+ } *a;
+
+ IMustLock(dir);
+
+ err = -ENOMEM;
+ a = kmalloc(sizeof(*a), GFP_NOFS);
+ if (unlikely(!a))
+ goto out;
+
+ err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN);
+ if (unlikely(err))
+ goto out_free;
+ err = au_d_hashed_positive(dentry);
+ if (unlikely(err))
+ goto out_unlock;
+ inode = d_inode(dentry);
+ IMustLock(inode);
+ err = -EISDIR;
+ if (unlikely(d_is_dir(dentry)))
+ goto out_unlock; /* possible? */
+
+ btop = au_dbtop(dentry);
+ bwh = au_dbwh(dentry);
+ bindex = -1;
+ parent = dentry->d_parent; /* dir inode is locked */
+ di_write_lock_parent(parent);
+ wh_dentry = lock_hdir_create_wh(dentry, /*isdir*/0, &bindex, &a->dt,
+ &a->pin);
+ err = PTR_ERR(wh_dentry);
+ if (IS_ERR(wh_dentry))
+ goto out_parent;
+
+ a->h_path.mnt = au_sbr_mnt(dentry->d_sb, btop);
+ a->h_path.dentry = au_h_dptr(dentry, btop);
+ dget(a->h_path.dentry);
+ if (bindex == btop) {
+ h_dir = au_pinned_h_dir(&a->pin);
+ delegated = NULL;
+ err = vfsub_unlink(h_dir, &a->h_path, &delegated, /*force*/0);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal unlink\n");
+ iput(delegated);
+ }
+ } else {
+ /* dir inode is locked */
+ h_dir = d_inode(wh_dentry->d_parent);
+ IMustLock(h_dir);
+ err = 0;
+ }
+
+ if (!err) {
+ vfsub_drop_nlink(inode);
+ epilog(dir, dentry, bindex);
+
+ /* update target timestamps */
+ if (bindex == btop) {
+ vfsub_update_h_iattr(&a->h_path, /*did*/NULL);
+ /*ignore*/
+ inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime;
+ } else
+ /* todo: this timestamp may be reverted later */
+ inode->i_ctime = h_dir->i_ctime;
+ goto out_unpin; /* success */
+ }
+
+ /* revert */
+ if (wh_dentry) {
+ int rerr;
+
+ rerr = do_revert(err, dir, bindex, bwh, wh_dentry, dentry,
+ &a->dt);
+ if (rerr)
+ err = rerr;
+ }
+
+out_unpin:
+ au_unpin(&a->pin);
+ dput(wh_dentry);
+ dput(a->h_path.dentry);
+out_parent:
+ di_write_unlock(parent);
+out_unlock:
+ aufs_read_unlock(dentry, AuLock_DW);
+out_free:
+ au_kfree_rcu(a);
+out:
+ return err;
+}
+
+int aufs_rmdir(struct inode *dir, struct dentry *dentry)
+{
+ int err, rmdir_later;
+ aufs_bindex_t bwh, bindex, btop;
+ struct inode *inode;
+ struct dentry *parent, *wh_dentry, *h_dentry;
+ struct au_whtmp_rmdir *args;
+ /* to reduce stack size */
+ struct {
+ struct au_dtime dt;
+ struct au_pin pin;
+ } *a;
+
+ IMustLock(dir);
+
+ err = -ENOMEM;
+ a = kmalloc(sizeof(*a), GFP_NOFS);
+ if (unlikely(!a))
+ goto out;
+
+ err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_GEN);
+ if (unlikely(err))
+ goto out_free;
+ err = au_alive_dir(dentry);
+ if (unlikely(err))
+ goto out_unlock;
+ inode = d_inode(dentry);
+ IMustLock(inode);
+ err = -ENOTDIR;
+ if (unlikely(!d_is_dir(dentry)))
+ goto out_unlock; /* possible? */
+
+ err = -ENOMEM;
+ args = au_whtmp_rmdir_alloc(dir->i_sb, GFP_NOFS);
+ if (unlikely(!args))
+ goto out_unlock;
+
+ parent = dentry->d_parent; /* dir inode is locked */
+ di_write_lock_parent(parent);
+ err = au_test_empty(dentry, &args->whlist);
+ if (unlikely(err))
+ goto out_parent;
+
+ btop = au_dbtop(dentry);
+ bwh = au_dbwh(dentry);
+ bindex = -1;
+ wh_dentry = lock_hdir_create_wh(dentry, /*isdir*/1, &bindex, &a->dt,
+ &a->pin);
+ err = PTR_ERR(wh_dentry);
+ if (IS_ERR(wh_dentry))
+ goto out_parent;
+
+ h_dentry = au_h_dptr(dentry, btop);
+ dget(h_dentry);
+ rmdir_later = 0;
+ if (bindex == btop) {
+ err = renwh_and_rmdir(dentry, btop, &args->whlist, dir);
+ if (err > 0) {
+ rmdir_later = err;
+ err = 0;
+ }
+ } else {
+ /* stop monitoring */
+ au_hn_free(au_hi(inode, btop));
+
+ /* dir inode is locked */
+ IMustLock(d_inode(wh_dentry->d_parent));
+ err = 0;
+ }
+
+ if (!err) {
+ vfsub_dead_dir(inode);
+ au_set_dbdiropq(dentry, -1);
+ epilog(dir, dentry, bindex);
+
+ if (rmdir_later) {
+ au_whtmp_kick_rmdir(dir, btop, h_dentry, args);
+ args = NULL;
+ }
+
+ goto out_unpin; /* success */
+ }
+
+ /* revert */
+ AuLabel(revert);
+ if (wh_dentry) {
+ int rerr;
+
+ rerr = do_revert(err, dir, bindex, bwh, wh_dentry, dentry,
+ &a->dt);
+ if (rerr)
+ err = rerr;
+ }
+
+out_unpin:
+ au_unpin(&a->pin);
+ dput(wh_dentry);
+ dput(h_dentry);
+out_parent:
+ di_write_unlock(parent);
+ if (args)
+ au_whtmp_rmdir_free(args);
+out_unlock:
+ aufs_read_unlock(dentry, AuLock_DW);
+out_free:
+ au_kfree_rcu(a);
+out:
+ AuTraceErr(err);
+ return err;
+}
diff --git a/fs/aufs/i_op_ren.c b/fs/aufs/i_op_ren.c
new file mode 100644
index 0000000000..91aa66594a
--- /dev/null
+++ b/fs/aufs/i_op_ren.c
@@ -0,0 +1,1250 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * inode operation (rename entry)
+ * todo: this is crazy monster
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+enum { AuSRC, AuDST, AuSrcDst };
+enum { AuPARENT, AuCHILD, AuParentChild };
+
+#define AuRen_ISDIR_SRC 1
+#define AuRen_ISDIR_DST (1 << 1)
+#define AuRen_ISSAMEDIR (1 << 2)
+#define AuRen_WHSRC (1 << 3)
+#define AuRen_WHDST (1 << 4)
+#define AuRen_MNT_WRITE (1 << 5)
+#define AuRen_DT_DSTDIR (1 << 6)
+#define AuRen_DIROPQ_SRC (1 << 7)
+#define AuRen_DIROPQ_DST (1 << 8)
+#define AuRen_DIRREN (1 << 9)
+#define AuRen_DROPPED_SRC (1 << 10)
+#define AuRen_DROPPED_DST (1 << 11)
+#define au_ftest_ren(flags, name) ((flags) & AuRen_##name)
+#define au_fset_ren(flags, name) \
+ do { (flags) |= AuRen_##name; } while (0)
+#define au_fclr_ren(flags, name) \
+ do { (flags) &= ~AuRen_##name; } while (0)
+
+#ifndef CONFIG_AUFS_DIRREN
+#undef AuRen_DIRREN
+#define AuRen_DIRREN 0
+#endif
+
+struct au_ren_args {
+ struct {
+ struct dentry *dentry, *h_dentry, *parent, *h_parent,
+ *wh_dentry;
+ struct inode *dir, *inode;
+ struct au_hinode *hdir, *hinode;
+ struct au_dtime dt[AuParentChild];
+ aufs_bindex_t btop, bdiropq;
+ } sd[AuSrcDst];
+
+#define src_dentry sd[AuSRC].dentry
+#define src_dir sd[AuSRC].dir
+#define src_inode sd[AuSRC].inode
+#define src_h_dentry sd[AuSRC].h_dentry
+#define src_parent sd[AuSRC].parent
+#define src_h_parent sd[AuSRC].h_parent
+#define src_wh_dentry sd[AuSRC].wh_dentry
+#define src_hdir sd[AuSRC].hdir
+#define src_hinode sd[AuSRC].hinode
+#define src_h_dir sd[AuSRC].hdir->hi_inode
+#define src_dt sd[AuSRC].dt
+#define src_btop sd[AuSRC].btop
+#define src_bdiropq sd[AuSRC].bdiropq
+
+#define dst_dentry sd[AuDST].dentry
+#define dst_dir sd[AuDST].dir
+#define dst_inode sd[AuDST].inode
+#define dst_h_dentry sd[AuDST].h_dentry
+#define dst_parent sd[AuDST].parent
+#define dst_h_parent sd[AuDST].h_parent
+#define dst_wh_dentry sd[AuDST].wh_dentry
+#define dst_hdir sd[AuDST].hdir
+#define dst_hinode sd[AuDST].hinode
+#define dst_h_dir sd[AuDST].hdir->hi_inode
+#define dst_dt sd[AuDST].dt
+#define dst_btop sd[AuDST].btop
+#define dst_bdiropq sd[AuDST].bdiropq
+
+ struct dentry *h_trap;
+ struct au_branch *br;
+ struct path h_path;
+ struct au_nhash whlist;
+ aufs_bindex_t btgt, src_bwh;
+
+ struct {
+ unsigned short auren_flags;
+ unsigned char flags; /* syscall parameter */
+ unsigned char exchange;
+ } __packed;
+
+ struct au_whtmp_rmdir *thargs;
+ struct dentry *h_dst;
+ struct au_hinode *h_root;
+};
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * functions for reverting.
+ * when an error happened in a single rename systemcall, we should revert
+ * everything as if nothing happened.
+ * we don't need to revert the copied-up/down the parent dir since they are
+ * harmless.
+ */
+
+#define RevertFailure(fmt, ...) do { \
+ AuIOErr("revert failure: " fmt " (%d, %d)\n", \
+ ##__VA_ARGS__, err, rerr); \
+ err = -EIO; \
+} while (0)
+
+static void au_ren_do_rev_diropq(int err, struct au_ren_args *a, int idx)
+{
+ int rerr;
+ struct dentry *d;
+#define src_or_dst(member) a->sd[idx].member
+
+ d = src_or_dst(dentry); /* {src,dst}_dentry */
+ au_hn_inode_lock_nested(src_or_dst(hinode), AuLsc_I_CHILD);
+ rerr = au_diropq_remove(d, a->btgt);
+ au_hn_inode_unlock(src_or_dst(hinode));
+ au_set_dbdiropq(d, src_or_dst(bdiropq));
+ if (rerr)
+ RevertFailure("remove diropq %pd", d);
+
+#undef src_or_dst_
+}
+
+static void au_ren_rev_diropq(int err, struct au_ren_args *a)
+{
+ if (au_ftest_ren(a->auren_flags, DIROPQ_SRC))
+ au_ren_do_rev_diropq(err, a, AuSRC);
+ if (au_ftest_ren(a->auren_flags, DIROPQ_DST))
+ au_ren_do_rev_diropq(err, a, AuDST);
+}
+
+static void au_ren_rev_rename(int err, struct au_ren_args *a)
+{
+ int rerr;
+ struct inode *delegated;
+
+ a->h_path.dentry = vfsub_lkup_one(&a->src_dentry->d_name,
+ a->src_h_parent);
+ rerr = PTR_ERR(a->h_path.dentry);
+ if (IS_ERR(a->h_path.dentry)) {
+ RevertFailure("lkup one %pd", a->src_dentry);
+ return;
+ }
+
+ delegated = NULL;
+ rerr = vfsub_rename(a->dst_h_dir,
+ au_h_dptr(a->src_dentry, a->btgt),
+ a->src_h_dir, &a->h_path, &delegated, a->flags);
+ if (unlikely(rerr == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal rename\n");
+ iput(delegated);
+ }
+ d_drop(a->h_path.dentry);
+ dput(a->h_path.dentry);
+ /* au_set_h_dptr(a->src_dentry, a->btgt, NULL); */
+ if (rerr)
+ RevertFailure("rename %pd", a->src_dentry);
+}
+
+static void au_ren_rev_whtmp(int err, struct au_ren_args *a)
+{
+ int rerr;
+ struct inode *delegated;
+
+ a->h_path.dentry = vfsub_lkup_one(&a->dst_dentry->d_name,
+ a->dst_h_parent);
+ rerr = PTR_ERR(a->h_path.dentry);
+ if (IS_ERR(a->h_path.dentry)) {
+ RevertFailure("lkup one %pd", a->dst_dentry);
+ return;
+ }
+ if (d_is_positive(a->h_path.dentry)) {
+ d_drop(a->h_path.dentry);
+ dput(a->h_path.dentry);
+ return;
+ }
+
+ delegated = NULL;
+ rerr = vfsub_rename(a->dst_h_dir, a->h_dst, a->dst_h_dir, &a->h_path,
+ &delegated, a->flags);
+ if (unlikely(rerr == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal rename\n");
+ iput(delegated);
+ }
+ d_drop(a->h_path.dentry);
+ dput(a->h_path.dentry);
+ if (!rerr)
+ au_set_h_dptr(a->dst_dentry, a->btgt, dget(a->h_dst));
+ else
+ RevertFailure("rename %pd", a->h_dst);
+}
+
+static void au_ren_rev_whsrc(int err, struct au_ren_args *a)
+{
+ int rerr;
+
+ a->h_path.dentry = a->src_wh_dentry;
+ rerr = au_wh_unlink_dentry(a->src_h_dir, &a->h_path, a->src_dentry);
+ au_set_dbwh(a->src_dentry, a->src_bwh);
+ if (rerr)
+ RevertFailure("unlink %pd", a->src_wh_dentry);
+}
+#undef RevertFailure
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * when we have to copyup the renaming entry, do it with the rename-target name
+ * in order to minimize the cost (the later actual rename is unnecessary).
+ * otherwise rename it on the target branch.
+ */
+static int au_ren_or_cpup(struct au_ren_args *a)
+{
+ int err;
+ struct dentry *d;
+ struct inode *delegated;
+
+ d = a->src_dentry;
+ if (au_dbtop(d) == a->btgt) {
+ a->h_path.dentry = a->dst_h_dentry;
+ AuDebugOn(au_dbtop(d) != a->btgt);
+ delegated = NULL;
+ err = vfsub_rename(a->src_h_dir, au_h_dptr(d, a->btgt),
+ a->dst_h_dir, &a->h_path, &delegated,
+ a->flags);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal rename\n");
+ iput(delegated);
+ }
+ } else
+ BUG();
+
+ if (!err && a->h_dst)
+ /* it will be set to dinfo later */
+ dget(a->h_dst);
+
+ return err;
+}
+
+/* cf. aufs_rmdir() */
+static int au_ren_del_whtmp(struct au_ren_args *a)
+{
+ int err;
+ struct inode *dir;
+
+ dir = a->dst_dir;
+ SiMustAnyLock(dir->i_sb);
+ if (!au_nhash_test_longer_wh(&a->whlist, a->btgt,
+ au_sbi(dir->i_sb)->si_dirwh)
+ || au_test_fs_remote(a->h_dst->d_sb)) {
+ err = au_whtmp_rmdir(dir, a->btgt, a->h_dst, &a->whlist);
+ if (unlikely(err))
+ pr_warn("failed removing whtmp dir %pd (%d), "
+ "ignored.\n", a->h_dst, err);
+ } else {
+ au_nhash_wh_free(&a->thargs->whlist);
+ a->thargs->whlist = a->whlist;
+ a->whlist.nh_num = 0;
+ au_whtmp_kick_rmdir(dir, a->btgt, a->h_dst, a->thargs);
+ dput(a->h_dst);
+ a->thargs = NULL;
+ }
+
+ return 0;
+}
+
+/* make it 'opaque' dir. */
+static int au_ren_do_diropq(struct au_ren_args *a, int idx)
+{
+ int err;
+ struct dentry *d, *diropq;
+#define src_or_dst(member) a->sd[idx].member
+
+ err = 0;
+ d = src_or_dst(dentry); /* {src,dst}_dentry */
+ src_or_dst(bdiropq) = au_dbdiropq(d);
+ src_or_dst(hinode) = au_hi(src_or_dst(inode), a->btgt);
+ au_hn_inode_lock_nested(src_or_dst(hinode), AuLsc_I_CHILD);
+ diropq = au_diropq_create(d, a->btgt);
+ au_hn_inode_unlock(src_or_dst(hinode));
+ if (IS_ERR(diropq))
+ err = PTR_ERR(diropq);
+ else
+ dput(diropq);
+
+#undef src_or_dst_
+ return err;
+}
+
+static int au_ren_diropq(struct au_ren_args *a)
+{
+ int err;
+ unsigned char always;
+ struct dentry *d;
+
+ err = 0;
+ d = a->dst_dentry; /* already renamed on the branch */
+ always = !!au_opt_test(au_mntflags(d->d_sb), ALWAYS_DIROPQ);
+ if (au_ftest_ren(a->auren_flags, ISDIR_SRC)
+ && !au_ftest_ren(a->auren_flags, DIRREN)
+ && a->btgt != au_dbdiropq(a->src_dentry)
+ && (a->dst_wh_dentry
+ || a->btgt <= au_dbdiropq(d)
+ /* hide the lower to keep xino */
+ /* the lowers may not be a dir, but we hide them anyway */
+ || a->btgt < au_dbbot(d)
+ || always)) {
+ AuDbg("here\n");
+ err = au_ren_do_diropq(a, AuSRC);
+ if (unlikely(err))
+ goto out;
+ au_fset_ren(a->auren_flags, DIROPQ_SRC);
+ }
+ if (!a->exchange)
+ goto out; /* success */
+
+ d = a->src_dentry; /* already renamed on the branch */
+ if (au_ftest_ren(a->auren_flags, ISDIR_DST)
+ && a->btgt != au_dbdiropq(a->dst_dentry)
+ && (a->btgt < au_dbdiropq(d)
+ || a->btgt < au_dbbot(d)
+ || always)) {
+ AuDbgDentry(a->src_dentry);
+ AuDbgDentry(a->dst_dentry);
+ err = au_ren_do_diropq(a, AuDST);
+ if (unlikely(err))
+ goto out_rev_src;
+ au_fset_ren(a->auren_flags, DIROPQ_DST);
+ }
+ goto out; /* success */
+
+out_rev_src:
+ AuDbg("err %d, reverting src\n", err);
+ au_ren_rev_diropq(err, a);
+out:
+ return err;
+}
+
+static int do_rename(struct au_ren_args *a)
+{
+ int err;
+ struct dentry *d, *h_d;
+
+ if (!a->exchange) {
+ /* prepare workqueue args for asynchronous rmdir */
+ h_d = a->dst_h_dentry;
+ if (au_ftest_ren(a->auren_flags, ISDIR_DST)
+ /* && !au_ftest_ren(a->auren_flags, DIRREN) */
+ && d_is_positive(h_d)) {
+ err = -ENOMEM;
+ a->thargs = au_whtmp_rmdir_alloc(a->src_dentry->d_sb,
+ GFP_NOFS);
+ if (unlikely(!a->thargs))
+ goto out;
+ a->h_dst = dget(h_d);
+ }
+
+ /* create whiteout for src_dentry */
+ if (au_ftest_ren(a->auren_flags, WHSRC)) {
+ a->src_bwh = au_dbwh(a->src_dentry);
+ AuDebugOn(a->src_bwh >= 0);
+ a->src_wh_dentry = au_wh_create(a->src_dentry, a->btgt,
+ a->src_h_parent);
+ err = PTR_ERR(a->src_wh_dentry);
+ if (IS_ERR(a->src_wh_dentry))
+ goto out_thargs;
+ }
+
+ /* lookup whiteout for dentry */
+ if (au_ftest_ren(a->auren_flags, WHDST)) {
+ h_d = au_wh_lkup(a->dst_h_parent,
+ &a->dst_dentry->d_name, a->br);
+ err = PTR_ERR(h_d);
+ if (IS_ERR(h_d))
+ goto out_whsrc;
+ if (d_is_negative(h_d))
+ dput(h_d);
+ else
+ a->dst_wh_dentry = h_d;
+ }
+
+ /* rename dentry to tmpwh */
+ if (a->thargs) {
+ err = au_whtmp_ren(a->dst_h_dentry, a->br);
+ if (unlikely(err))
+ goto out_whdst;
+
+ d = a->dst_dentry;
+ au_set_h_dptr(d, a->btgt, NULL);
+ err = au_lkup_neg(d, a->btgt, /*wh*/0);
+ if (unlikely(err))
+ goto out_whtmp;
+ a->dst_h_dentry = au_h_dptr(d, a->btgt);
+ }
+ }
+
+ BUG_ON(d_is_positive(a->dst_h_dentry) && a->src_btop != a->btgt);
+#if 0
+ BUG_ON(!au_ftest_ren(a->auren_flags, DIRREN)
+ && d_is_positive(a->dst_h_dentry)
+ && a->src_btop != a->btgt);
+#endif
+
+ /* rename by vfs_rename or cpup */
+ err = au_ren_or_cpup(a);
+ if (unlikely(err))
+ /* leave the copied-up one */
+ goto out_whtmp;
+
+ /* make dir opaque */
+ err = au_ren_diropq(a);
+ if (unlikely(err))
+ goto out_rename;
+
+ /* update target timestamps */
+ if (a->exchange) {
+ AuDebugOn(au_dbtop(a->dst_dentry) != a->btgt);
+ a->h_path.dentry = au_h_dptr(a->dst_dentry, a->btgt);
+ vfsub_update_h_iattr(&a->h_path, /*did*/NULL); /*ignore*/
+ a->dst_inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime;
+ }
+ AuDebugOn(au_dbtop(a->src_dentry) != a->btgt);
+ a->h_path.dentry = au_h_dptr(a->src_dentry, a->btgt);
+ vfsub_update_h_iattr(&a->h_path, /*did*/NULL); /*ignore*/
+ a->src_inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime;
+
+ if (!a->exchange) {
+ /* remove whiteout for dentry */
+ if (a->dst_wh_dentry) {
+ a->h_path.dentry = a->dst_wh_dentry;
+ err = au_wh_unlink_dentry(a->dst_h_dir, &a->h_path,
+ a->dst_dentry);
+ if (unlikely(err))
+ goto out_diropq;
+ }
+
+ /* remove whtmp */
+ if (a->thargs)
+ au_ren_del_whtmp(a); /* ignore this error */
+
+ au_fhsm_wrote(a->src_dentry->d_sb, a->btgt, /*force*/0);
+ }
+ err = 0;
+ goto out_success;
+
+out_diropq:
+ au_ren_rev_diropq(err, a);
+out_rename:
+ au_ren_rev_rename(err, a);
+ dput(a->h_dst);
+out_whtmp:
+ if (a->thargs)
+ au_ren_rev_whtmp(err, a);
+out_whdst:
+ dput(a->dst_wh_dentry);
+ a->dst_wh_dentry = NULL;
+out_whsrc:
+ if (a->src_wh_dentry)
+ au_ren_rev_whsrc(err, a);
+out_success:
+ dput(a->src_wh_dentry);
+ dput(a->dst_wh_dentry);
+out_thargs:
+ if (a->thargs) {
+ dput(a->h_dst);
+ au_whtmp_rmdir_free(a->thargs);
+ a->thargs = NULL;
+ }
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * test if @dentry dir can be rename destination or not.
+ * success means, it is a logically empty dir.
+ */
+static int may_rename_dstdir(struct dentry *dentry, struct au_nhash *whlist)
+{
+ return au_test_empty(dentry, whlist);
+}
+
+/*
+ * test if @a->src_dentry dir can be rename source or not.
+ * if it can, return 0.
+ * success means,
+ * - it is a logically empty dir.
+ * - or, it exists on writable branch and has no children including whiteouts
+ * on the lower branch unless DIRREN is on.
+ */
+static int may_rename_srcdir(struct au_ren_args *a)
+{
+ int err;
+ unsigned int rdhash;
+ aufs_bindex_t btop, btgt;
+ struct dentry *dentry;
+ struct super_block *sb;
+ struct au_sbinfo *sbinfo;
+
+ dentry = a->src_dentry;
+ sb = dentry->d_sb;
+ sbinfo = au_sbi(sb);
+ if (au_opt_test(sbinfo->si_mntflags, DIRREN))
+ au_fset_ren(a->auren_flags, DIRREN);
+
+ btgt = a->btgt;
+ btop = au_dbtop(dentry);
+ if (btop != btgt) {
+ struct au_nhash whlist;
+
+ SiMustAnyLock(sb);
+ rdhash = sbinfo->si_rdhash;
+ if (!rdhash)
+ rdhash = au_rdhash_est(au_dir_size(/*file*/NULL,
+ dentry));
+ err = au_nhash_alloc(&whlist, rdhash, GFP_NOFS);
+ if (unlikely(err))
+ goto out;
+ err = au_test_empty(dentry, &whlist);
+ au_nhash_wh_free(&whlist);
+ goto out;
+ }
+
+ if (btop == au_dbtaildir(dentry))
+ return 0; /* success */
+
+ err = au_test_empty_lower(dentry);
+
+out:
+ if (err == -ENOTEMPTY) {
+ if (au_ftest_ren(a->auren_flags, DIRREN)) {
+ err = 0;
+ } else {
+ AuWarn1("renaming dir who has child(ren) on multiple "
+ "branches, is not supported\n");
+ err = -EXDEV;
+ }
+ }
+ return err;
+}
+
+/* side effect: sets whlist and h_dentry */
+static int au_ren_may_dir(struct au_ren_args *a)
+{
+ int err;
+ unsigned int rdhash;
+ struct dentry *d;
+
+ d = a->dst_dentry;
+ SiMustAnyLock(d->d_sb);
+
+ err = 0;
+ if (au_ftest_ren(a->auren_flags, ISDIR_DST) && a->dst_inode) {
+ rdhash = au_sbi(d->d_sb)->si_rdhash;
+ if (!rdhash)
+ rdhash = au_rdhash_est(au_dir_size(/*file*/NULL, d));
+ err = au_nhash_alloc(&a->whlist, rdhash, GFP_NOFS);
+ if (unlikely(err))
+ goto out;
+
+ if (!a->exchange) {
+ au_set_dbtop(d, a->dst_btop);
+ err = may_rename_dstdir(d, &a->whlist);
+ au_set_dbtop(d, a->btgt);
+ } else
+ err = may_rename_srcdir(a);
+ }
+ a->dst_h_dentry = au_h_dptr(d, au_dbtop(d));
+ if (unlikely(err))
+ goto out;
+
+ d = a->src_dentry;
+ a->src_h_dentry = au_h_dptr(d, au_dbtop(d));
+ if (au_ftest_ren(a->auren_flags, ISDIR_SRC)) {
+ err = may_rename_srcdir(a);
+ if (unlikely(err)) {
+ au_nhash_wh_free(&a->whlist);
+ a->whlist.nh_num = 0;
+ }
+ }
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * simple tests for rename.
+ * following the checks in vfs, plus the parent-child relationship.
+ */
+static int au_may_ren(struct au_ren_args *a)
+{
+ int err, isdir;
+ struct inode *h_inode;
+
+ if (a->src_btop == a->btgt) {
+ err = au_may_del(a->src_dentry, a->btgt, a->src_h_parent,
+ au_ftest_ren(a->auren_flags, ISDIR_SRC));
+ if (unlikely(err))
+ goto out;
+ err = -EINVAL;
+ if (unlikely(a->src_h_dentry == a->h_trap))
+ goto out;
+ }
+
+ err = 0;
+ if (a->dst_btop != a->btgt)
+ goto out;
+
+ err = -ENOTEMPTY;
+ if (unlikely(a->dst_h_dentry == a->h_trap))
+ goto out;
+
+ err = -EIO;
+ isdir = !!au_ftest_ren(a->auren_flags, ISDIR_DST);
+ if (d_really_is_negative(a->dst_dentry)) {
+ if (d_is_negative(a->dst_h_dentry))
+ err = au_may_add(a->dst_dentry, a->btgt,
+ a->dst_h_parent, isdir);
+ } else {
+ if (unlikely(d_is_negative(a->dst_h_dentry)))
+ goto out;
+ h_inode = d_inode(a->dst_h_dentry);
+ if (h_inode->i_nlink)
+ err = au_may_del(a->dst_dentry, a->btgt,
+ a->dst_h_parent, isdir);
+ }
+
+out:
+ if (unlikely(err == -ENOENT || err == -EEXIST))
+ err = -EIO;
+ AuTraceErr(err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * locking order
+ * (VFS)
+ * - src_dir and dir by lock_rename()
+ * - inode if exists
+ * (aufs)
+ * - lock all
+ * + src_dentry and dentry by aufs_read_and_write_lock2() which calls,
+ * + si_read_lock
+ * + di_write_lock2_child()
+ * + di_write_lock_child()
+ * + ii_write_lock_child()
+ * + di_write_lock_child2()
+ * + ii_write_lock_child2()
+ * + src_parent and parent
+ * + di_write_lock_parent()
+ * + ii_write_lock_parent()
+ * + di_write_lock_parent2()
+ * + ii_write_lock_parent2()
+ * + lower src_dir and dir by vfsub_lock_rename()
+ * + verify the every relationships between child and parent. if any
+ * of them failed, unlock all and return -EBUSY.
+ */
+static void au_ren_unlock(struct au_ren_args *a)
+{
+ vfsub_unlock_rename(a->src_h_parent, a->src_hdir,
+ a->dst_h_parent, a->dst_hdir);
+ if (au_ftest_ren(a->auren_flags, DIRREN)
+ && a->h_root)
+ au_hn_inode_unlock(a->h_root);
+ if (au_ftest_ren(a->auren_flags, MNT_WRITE))
+ vfsub_mnt_drop_write(au_br_mnt(a->br));
+}
+
+static int au_ren_lock(struct au_ren_args *a)
+{
+ int err;
+ unsigned int udba;
+
+ err = 0;
+ a->src_h_parent = au_h_dptr(a->src_parent, a->btgt);
+ a->src_hdir = au_hi(a->src_dir, a->btgt);
+ a->dst_h_parent = au_h_dptr(a->dst_parent, a->btgt);
+ a->dst_hdir = au_hi(a->dst_dir, a->btgt);
+
+ err = vfsub_mnt_want_write(au_br_mnt(a->br));
+ if (unlikely(err))
+ goto out;
+ au_fset_ren(a->auren_flags, MNT_WRITE);
+ if (au_ftest_ren(a->auren_flags, DIRREN)) {
+ struct dentry *root;
+ struct inode *dir;
+
+ /*
+ * sbinfo is already locked, so this ii_read_lock is
+ * unnecessary. but our debugging feature checks it.
+ */
+ root = a->src_inode->i_sb->s_root;
+ if (root != a->src_parent && root != a->dst_parent) {
+ dir = d_inode(root);
+ ii_read_lock_parent3(dir);
+ a->h_root = au_hi(dir, a->btgt);
+ ii_read_unlock(dir);
+ au_hn_inode_lock_nested(a->h_root, AuLsc_I_PARENT3);
+ }
+ }
+ a->h_trap = vfsub_lock_rename(a->src_h_parent, a->src_hdir,
+ a->dst_h_parent, a->dst_hdir);
+ udba = au_opt_udba(a->src_dentry->d_sb);
+ if (unlikely(a->src_hdir->hi_inode != d_inode(a->src_h_parent)
+ || a->dst_hdir->hi_inode != d_inode(a->dst_h_parent)))
+ err = au_busy_or_stale();
+ if (!err && au_dbtop(a->src_dentry) == a->btgt)
+ err = au_h_verify(a->src_h_dentry, udba,
+ d_inode(a->src_h_parent), a->src_h_parent,
+ a->br);
+ if (!err && au_dbtop(a->dst_dentry) == a->btgt)
+ err = au_h_verify(a->dst_h_dentry, udba,
+ d_inode(a->dst_h_parent), a->dst_h_parent,
+ a->br);
+ if (!err)
+ goto out; /* success */
+
+ err = au_busy_or_stale();
+ au_ren_unlock(a);
+
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void au_ren_refresh_dir(struct au_ren_args *a)
+{
+ struct inode *dir;
+
+ dir = a->dst_dir;
+ inode_inc_iversion(dir);
+ if (au_ftest_ren(a->auren_flags, ISDIR_SRC)) {
+ /* is this updating defined in POSIX? */
+ au_cpup_attr_timesizes(a->src_inode);
+ au_cpup_attr_nlink(dir, /*force*/1);
+ }
+ au_dir_ts(dir, a->btgt);
+
+ if (a->exchange) {
+ dir = a->src_dir;
+ inode_inc_iversion(dir);
+ if (au_ftest_ren(a->auren_flags, ISDIR_DST)) {
+ /* is this updating defined in POSIX? */
+ au_cpup_attr_timesizes(a->dst_inode);
+ au_cpup_attr_nlink(dir, /*force*/1);
+ }
+ au_dir_ts(dir, a->btgt);
+ }
+
+ if (au_ftest_ren(a->auren_flags, ISSAMEDIR))
+ return;
+
+ dir = a->src_dir;
+ inode_inc_iversion(dir);
+ if (au_ftest_ren(a->auren_flags, ISDIR_SRC))
+ au_cpup_attr_nlink(dir, /*force*/1);
+ au_dir_ts(dir, a->btgt);
+}
+
+static void au_ren_refresh(struct au_ren_args *a)
+{
+ aufs_bindex_t bbot, bindex;
+ struct dentry *d, *h_d;
+ struct inode *i, *h_i;
+ struct super_block *sb;
+
+ d = a->dst_dentry;
+ d_drop(d);
+ if (a->h_dst)
+ /* already dget-ed by au_ren_or_cpup() */
+ au_set_h_dptr(d, a->btgt, a->h_dst);
+
+ i = a->dst_inode;
+ if (i) {
+ if (!a->exchange) {
+ if (!au_ftest_ren(a->auren_flags, ISDIR_DST))
+ vfsub_drop_nlink(i);
+ else {
+ vfsub_dead_dir(i);
+ au_cpup_attr_timesizes(i);
+ }
+ au_update_dbrange(d, /*do_put_zero*/1);
+ } else
+ au_cpup_attr_nlink(i, /*force*/1);
+ } else {
+ bbot = a->btgt;
+ for (bindex = au_dbtop(d); bindex < bbot; bindex++)
+ au_set_h_dptr(d, bindex, NULL);
+ bbot = au_dbbot(d);
+ for (bindex = a->btgt + 1; bindex <= bbot; bindex++)
+ au_set_h_dptr(d, bindex, NULL);
+ au_update_dbrange(d, /*do_put_zero*/0);
+ }
+
+ if (a->exchange
+ || au_ftest_ren(a->auren_flags, DIRREN)) {
+ d_drop(a->src_dentry);
+ if (au_ftest_ren(a->auren_flags, DIRREN))
+ au_set_dbwh(a->src_dentry, -1);
+ return;
+ }
+
+ d = a->src_dentry;
+ au_set_dbwh(d, -1);
+ bbot = au_dbbot(d);
+ for (bindex = a->btgt + 1; bindex <= bbot; bindex++) {
+ h_d = au_h_dptr(d, bindex);
+ if (h_d)
+ au_set_h_dptr(d, bindex, NULL);
+ }
+ au_set_dbbot(d, a->btgt);
+
+ sb = d->d_sb;
+ i = a->src_inode;
+ if (au_opt_test(au_mntflags(sb), PLINK) && au_plink_test(i))
+ return; /* success */
+
+ bbot = au_ibbot(i);
+ for (bindex = a->btgt + 1; bindex <= bbot; bindex++) {
+ h_i = au_h_iptr(i, bindex);
+ if (h_i) {
+ au_xino_write(sb, bindex, h_i->i_ino, /*ino*/0);
+ /* ignore this error */
+ au_set_h_iptr(i, bindex, NULL, 0);
+ }
+ }
+ au_set_ibbot(i, a->btgt);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* mainly for link(2) and rename(2) */
+int au_wbr(struct dentry *dentry, aufs_bindex_t btgt)
+{
+ aufs_bindex_t bdiropq, bwh;
+ struct dentry *parent;
+ struct au_branch *br;
+
+ parent = dentry->d_parent;
+ IMustLock(d_inode(parent)); /* dir is locked */
+
+ bdiropq = au_dbdiropq(parent);
+ bwh = au_dbwh(dentry);
+ br = au_sbr(dentry->d_sb, btgt);
+ if (au_br_rdonly(br)
+ || (0 <= bdiropq && bdiropq < btgt)
+ || (0 <= bwh && bwh < btgt))
+ btgt = -1;
+
+ AuDbg("btgt %d\n", btgt);
+ return btgt;
+}
+
+/* sets src_btop, dst_btop and btgt */
+static int au_ren_wbr(struct au_ren_args *a)
+{
+ int err;
+ struct au_wr_dir_args wr_dir_args = {
+ /* .force_btgt = -1, */
+ .flags = AuWrDir_ADD_ENTRY
+ };
+
+ a->src_btop = au_dbtop(a->src_dentry);
+ a->dst_btop = au_dbtop(a->dst_dentry);
+ if (au_ftest_ren(a->auren_flags, ISDIR_SRC)
+ || au_ftest_ren(a->auren_flags, ISDIR_DST))
+ au_fset_wrdir(wr_dir_args.flags, ISDIR);
+ wr_dir_args.force_btgt = a->src_btop;
+ if (a->dst_inode && a->dst_btop < a->src_btop)
+ wr_dir_args.force_btgt = a->dst_btop;
+ wr_dir_args.force_btgt = au_wbr(a->dst_dentry, wr_dir_args.force_btgt);
+ err = au_wr_dir(a->dst_dentry, a->src_dentry, &wr_dir_args);
+ a->btgt = err;
+ if (a->exchange)
+ au_update_dbtop(a->dst_dentry);
+
+ return err;
+}
+
+static void au_ren_dt(struct au_ren_args *a)
+{
+ a->h_path.dentry = a->src_h_parent;
+ au_dtime_store(a->src_dt + AuPARENT, a->src_parent, &a->h_path);
+ if (!au_ftest_ren(a->auren_flags, ISSAMEDIR)) {
+ a->h_path.dentry = a->dst_h_parent;
+ au_dtime_store(a->dst_dt + AuPARENT, a->dst_parent, &a->h_path);
+ }
+
+ au_fclr_ren(a->auren_flags, DT_DSTDIR);
+ if (!au_ftest_ren(a->auren_flags, ISDIR_SRC)
+ && !a->exchange)
+ return;
+
+ a->h_path.dentry = a->src_h_dentry;
+ au_dtime_store(a->src_dt + AuCHILD, a->src_dentry, &a->h_path);
+ if (d_is_positive(a->dst_h_dentry)) {
+ au_fset_ren(a->auren_flags, DT_DSTDIR);
+ a->h_path.dentry = a->dst_h_dentry;
+ au_dtime_store(a->dst_dt + AuCHILD, a->dst_dentry, &a->h_path);
+ }
+}
+
+static void au_ren_rev_dt(int err, struct au_ren_args *a)
+{
+ struct dentry *h_d;
+ struct inode *h_inode;
+
+ au_dtime_revert(a->src_dt + AuPARENT);
+ if (!au_ftest_ren(a->auren_flags, ISSAMEDIR))
+ au_dtime_revert(a->dst_dt + AuPARENT);
+
+ if (au_ftest_ren(a->auren_flags, ISDIR_SRC) && err != -EIO) {
+ h_d = a->src_dt[AuCHILD].dt_h_path.dentry;
+ h_inode = d_inode(h_d);
+ inode_lock_nested(h_inode, AuLsc_I_CHILD);
+ au_dtime_revert(a->src_dt + AuCHILD);
+ inode_unlock(h_inode);
+
+ if (au_ftest_ren(a->auren_flags, DT_DSTDIR)) {
+ h_d = a->dst_dt[AuCHILD].dt_h_path.dentry;
+ h_inode = d_inode(h_d);
+ inode_lock_nested(h_inode, AuLsc_I_CHILD);
+ au_dtime_revert(a->dst_dt + AuCHILD);
+ inode_unlock(h_inode);
+ }
+ }
+}
+
+/* ---------------------------------------------------------------------- */
+
+int aufs_rename(struct inode *_src_dir, struct dentry *_src_dentry,
+ struct inode *_dst_dir, struct dentry *_dst_dentry,
+ unsigned int _flags)
+{
+ int err, lock_flags;
+ void *rev;
+ /* reduce stack space */
+ struct au_ren_args *a;
+ struct au_pin pin;
+
+ AuDbg("%pd, %pd, 0x%x\n", _src_dentry, _dst_dentry, _flags);
+ IMustLock(_src_dir);
+ IMustLock(_dst_dir);
+
+ err = -EINVAL;
+ if (unlikely(_flags & RENAME_WHITEOUT))
+ goto out;
+
+ err = -ENOMEM;
+ BUILD_BUG_ON(sizeof(*a) > PAGE_SIZE);
+ a = kzalloc(sizeof(*a), GFP_NOFS);
+ if (unlikely(!a))
+ goto out;
+
+ a->flags = _flags;
+ BUILD_BUG_ON(sizeof(a->exchange) == sizeof(u8)
+ && RENAME_EXCHANGE > U8_MAX);
+ a->exchange = _flags & RENAME_EXCHANGE;
+ a->src_dir = _src_dir;
+ a->src_dentry = _src_dentry;
+ a->src_inode = NULL;
+ if (d_really_is_positive(a->src_dentry))
+ a->src_inode = d_inode(a->src_dentry);
+ a->src_parent = a->src_dentry->d_parent; /* dir inode is locked */
+ a->dst_dir = _dst_dir;
+ a->dst_dentry = _dst_dentry;
+ a->dst_inode = NULL;
+ if (d_really_is_positive(a->dst_dentry))
+ a->dst_inode = d_inode(a->dst_dentry);
+ a->dst_parent = a->dst_dentry->d_parent; /* dir inode is locked */
+ if (a->dst_inode) {
+ /*
+ * if EXCHANGE && src is non-dir && dst is dir,
+ * dst is not locked.
+ */
+ /* IMustLock(a->dst_inode); */
+ au_igrab(a->dst_inode);
+ }
+
+ err = -ENOTDIR;
+ lock_flags = AuLock_FLUSH | AuLock_NOPLM | AuLock_GEN;
+ if (d_is_dir(a->src_dentry)) {
+ au_fset_ren(a->auren_flags, ISDIR_SRC);
+ if (unlikely(!a->exchange
+ && d_really_is_positive(a->dst_dentry)
+ && !d_is_dir(a->dst_dentry)))
+ goto out_free;
+ lock_flags |= AuLock_DIRS;
+ }
+ if (a->dst_inode && d_is_dir(a->dst_dentry)) {
+ au_fset_ren(a->auren_flags, ISDIR_DST);
+ if (unlikely(!a->exchange
+ && d_really_is_positive(a->src_dentry)
+ && !d_is_dir(a->src_dentry)))
+ goto out_free;
+ lock_flags |= AuLock_DIRS;
+ }
+ err = aufs_read_and_write_lock2(a->dst_dentry, a->src_dentry,
+ lock_flags);
+ if (unlikely(err))
+ goto out_free;
+
+ err = au_d_hashed_positive(a->src_dentry);
+ if (unlikely(err))
+ goto out_unlock;
+ err = -ENOENT;
+ if (a->dst_inode) {
+ /*
+ * If it is a dir, VFS unhash it before this
+ * function. It means we cannot rely upon d_unhashed().
+ */
+ if (unlikely(!a->dst_inode->i_nlink))
+ goto out_unlock;
+ if (!au_ftest_ren(a->auren_flags, ISDIR_DST)) {
+ err = au_d_hashed_positive(a->dst_dentry);
+ if (unlikely(err && !a->exchange))
+ goto out_unlock;
+ } else if (unlikely(IS_DEADDIR(a->dst_inode)))
+ goto out_unlock;
+ } else if (unlikely(d_unhashed(a->dst_dentry)))
+ goto out_unlock;
+
+ /*
+ * is it possible?
+ * yes, it happened (in linux-3.3-rcN) but I don't know why.
+ * there may exist a problem somewhere else.
+ */
+ err = -EINVAL;
+ if (unlikely(d_inode(a->dst_parent) == d_inode(a->src_dentry)))
+ goto out_unlock;
+
+ au_fset_ren(a->auren_flags, ISSAMEDIR); /* temporary */
+ di_write_lock_parent(a->dst_parent);
+
+ /* which branch we process */
+ err = au_ren_wbr(a);
+ if (unlikely(err < 0))
+ goto out_parent;
+ a->br = au_sbr(a->dst_dentry->d_sb, a->btgt);
+ a->h_path.mnt = au_br_mnt(a->br);
+
+ /* are they available to be renamed */
+ err = au_ren_may_dir(a);
+ if (unlikely(err))
+ goto out_children;
+
+ /* prepare the writable parent dir on the same branch */
+ if (a->dst_btop == a->btgt) {
+ au_fset_ren(a->auren_flags, WHDST);
+ } else {
+ err = au_cpup_dirs(a->dst_dentry, a->btgt);
+ if (unlikely(err))
+ goto out_children;
+ }
+
+ err = 0;
+ if (!a->exchange) {
+ if (a->src_dir != a->dst_dir) {
+ /*
+ * this temporary unlock is safe,
+ * because both dir->i_mutex are locked.
+ */
+ di_write_unlock(a->dst_parent);
+ di_write_lock_parent(a->src_parent);
+ err = au_wr_dir_need_wh(a->src_dentry,
+ au_ftest_ren(a->auren_flags,
+ ISDIR_SRC),
+ &a->btgt);
+ di_write_unlock(a->src_parent);
+ di_write_lock2_parent(a->src_parent, a->dst_parent,
+ /*isdir*/1);
+ au_fclr_ren(a->auren_flags, ISSAMEDIR);
+ } else
+ err = au_wr_dir_need_wh(a->src_dentry,
+ au_ftest_ren(a->auren_flags,
+ ISDIR_SRC),
+ &a->btgt);
+ }
+ if (unlikely(err < 0))
+ goto out_children;
+ if (err)
+ au_fset_ren(a->auren_flags, WHSRC);
+
+ /* cpup src */
+ if (a->src_btop != a->btgt) {
+ err = au_pin(&pin, a->src_dentry, a->btgt,
+ au_opt_udba(a->src_dentry->d_sb),
+ AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+ if (!err) {
+ struct au_cp_generic cpg = {
+ .dentry = a->src_dentry,
+ .bdst = a->btgt,
+ .bsrc = a->src_btop,
+ .len = -1,
+ .pin = &pin,
+ .flags = AuCpup_DTIME | AuCpup_HOPEN
+ };
+ AuDebugOn(au_dbtop(a->src_dentry) != a->src_btop);
+ err = au_sio_cpup_simple(&cpg);
+ au_unpin(&pin);
+ }
+ if (unlikely(err))
+ goto out_children;
+ a->src_btop = a->btgt;
+ a->src_h_dentry = au_h_dptr(a->src_dentry, a->btgt);
+ if (!a->exchange)
+ au_fset_ren(a->auren_flags, WHSRC);
+ }
+
+ /* cpup dst */
+ if (a->exchange && a->dst_inode
+ && a->dst_btop != a->btgt) {
+ err = au_pin(&pin, a->dst_dentry, a->btgt,
+ au_opt_udba(a->dst_dentry->d_sb),
+ AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+ if (!err) {
+ struct au_cp_generic cpg = {
+ .dentry = a->dst_dentry,
+ .bdst = a->btgt,
+ .bsrc = a->dst_btop,
+ .len = -1,
+ .pin = &pin,
+ .flags = AuCpup_DTIME | AuCpup_HOPEN
+ };
+ err = au_sio_cpup_simple(&cpg);
+ au_unpin(&pin);
+ }
+ if (unlikely(err))
+ goto out_children;
+ a->dst_btop = a->btgt;
+ a->dst_h_dentry = au_h_dptr(a->dst_dentry, a->btgt);
+ }
+
+ /* lock them all */
+ err = au_ren_lock(a);
+ if (unlikely(err))
+ /* leave the copied-up one */
+ goto out_children;
+
+ if (!a->exchange) {
+ if (!au_opt_test(au_mntflags(a->dst_dir->i_sb), UDBA_NONE))
+ err = au_may_ren(a);
+ else if (unlikely(a->dst_dentry->d_name.len > AUFS_MAX_NAMELEN))
+ err = -ENAMETOOLONG;
+ if (unlikely(err))
+ goto out_hdir;
+ }
+
+ /* store timestamps to be revertible */
+ au_ren_dt(a);
+
+ /* store dirren info */
+ if (au_ftest_ren(a->auren_flags, DIRREN)) {
+ err = au_dr_rename(a->src_dentry, a->btgt,
+ &a->dst_dentry->d_name, &rev);
+ AuTraceErr(err);
+ if (unlikely(err))
+ goto out_dt;
+ }
+
+ /* here we go */
+ err = do_rename(a);
+ if (unlikely(err))
+ goto out_dirren;
+
+ if (au_ftest_ren(a->auren_flags, DIRREN))
+ au_dr_rename_fin(a->src_dentry, a->btgt, rev);
+
+ /* update dir attributes */
+ au_ren_refresh_dir(a);
+
+ /* dput/iput all lower dentries */
+ au_ren_refresh(a);
+
+ goto out_hdir; /* success */
+
+out_dirren:
+ if (au_ftest_ren(a->auren_flags, DIRREN))
+ au_dr_rename_rev(a->src_dentry, a->btgt, rev);
+out_dt:
+ au_ren_rev_dt(err, a);
+out_hdir:
+ au_ren_unlock(a);
+out_children:
+ au_nhash_wh_free(&a->whlist);
+ if (err && a->dst_inode && a->dst_btop != a->btgt) {
+ AuDbg("btop %d, btgt %d\n", a->dst_btop, a->btgt);
+ au_set_h_dptr(a->dst_dentry, a->btgt, NULL);
+ au_set_dbtop(a->dst_dentry, a->dst_btop);
+ }
+out_parent:
+ if (!err) {
+ if (d_unhashed(a->src_dentry))
+ au_fset_ren(a->auren_flags, DROPPED_SRC);
+ if (d_unhashed(a->dst_dentry))
+ au_fset_ren(a->auren_flags, DROPPED_DST);
+ if (!a->exchange)
+ d_move(a->src_dentry, a->dst_dentry);
+ else {
+ d_exchange(a->src_dentry, a->dst_dentry);
+ if (au_ftest_ren(a->auren_flags, DROPPED_DST))
+ d_drop(a->dst_dentry);
+ }
+ if (au_ftest_ren(a->auren_flags, DROPPED_SRC))
+ d_drop(a->src_dentry);
+ } else {
+ au_update_dbtop(a->dst_dentry);
+ if (!a->dst_inode)
+ d_drop(a->dst_dentry);
+ }
+ if (au_ftest_ren(a->auren_flags, ISSAMEDIR))
+ di_write_unlock(a->dst_parent);
+ else
+ di_write_unlock2(a->src_parent, a->dst_parent);
+out_unlock:
+ aufs_read_and_write_unlock2(a->dst_dentry, a->src_dentry);
+out_free:
+ iput(a->dst_inode);
+ if (a->thargs)
+ au_whtmp_rmdir_free(a->thargs);
+ au_kfree_rcu(a);
+out:
+ AuTraceErr(err);
+ return err;
+}
diff --git a/fs/aufs/iinfo.c b/fs/aufs/iinfo.c
new file mode 100644
index 0000000000..098fd11505
--- /dev/null
+++ b/fs/aufs/iinfo.c
@@ -0,0 +1,286 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * inode private data
+ */
+
+#include "aufs.h"
+
+struct inode *au_h_iptr(struct inode *inode, aufs_bindex_t bindex)
+{
+ struct inode *h_inode;
+ struct au_hinode *hinode;
+
+ IiMustAnyLock(inode);
+
+ hinode = au_hinode(au_ii(inode), bindex);
+ h_inode = hinode->hi_inode;
+ AuDebugOn(h_inode && atomic_read(&h_inode->i_count) <= 0);
+ return h_inode;
+}
+
+/* todo: hard/soft set? */
+void au_hiput(struct au_hinode *hinode)
+{
+ au_hn_free(hinode);
+ dput(hinode->hi_whdentry);
+ iput(hinode->hi_inode);
+}
+
+unsigned int au_hi_flags(struct inode *inode, int isdir)
+{
+ unsigned int flags;
+ const unsigned int mnt_flags = au_mntflags(inode->i_sb);
+
+ flags = 0;
+ if (au_opt_test(mnt_flags, XINO))
+ au_fset_hi(flags, XINO);
+ if (isdir && au_opt_test(mnt_flags, UDBA_HNOTIFY))
+ au_fset_hi(flags, HNOTIFY);
+ return flags;
+}
+
+void au_set_h_iptr(struct inode *inode, aufs_bindex_t bindex,
+ struct inode *h_inode, unsigned int flags)
+{
+ struct au_hinode *hinode;
+ struct inode *hi;
+ struct au_iinfo *iinfo = au_ii(inode);
+
+ IiMustWriteLock(inode);
+
+ hinode = au_hinode(iinfo, bindex);
+ hi = hinode->hi_inode;
+ AuDebugOn(h_inode && atomic_read(&h_inode->i_count) <= 0);
+
+ if (hi)
+ au_hiput(hinode);
+ hinode->hi_inode = h_inode;
+ if (h_inode) {
+ int err;
+ struct super_block *sb = inode->i_sb;
+ struct au_branch *br;
+
+ AuDebugOn(inode->i_mode
+ && (h_inode->i_mode & S_IFMT)
+ != (inode->i_mode & S_IFMT));
+ if (bindex == iinfo->ii_btop)
+ au_cpup_igen(inode, h_inode);
+ br = au_sbr(sb, bindex);
+ hinode->hi_id = br->br_id;
+ if (au_ftest_hi(flags, XINO)) {
+ err = au_xino_write(sb, bindex, h_inode->i_ino,
+ inode->i_ino);
+ if (unlikely(err))
+ AuIOErr1("failed au_xino_write() %d\n", err);
+ }
+
+ if (au_ftest_hi(flags, HNOTIFY)
+ && au_br_hnotifyable(br->br_perm)) {
+ err = au_hn_alloc(hinode, inode);
+ if (unlikely(err))
+ AuIOErr1("au_hn_alloc() %d\n", err);
+ }
+ }
+}
+
+void au_set_hi_wh(struct inode *inode, aufs_bindex_t bindex,
+ struct dentry *h_wh)
+{
+ struct au_hinode *hinode;
+
+ IiMustWriteLock(inode);
+
+ hinode = au_hinode(au_ii(inode), bindex);
+ AuDebugOn(hinode->hi_whdentry);
+ hinode->hi_whdentry = h_wh;
+}
+
+void au_update_iigen(struct inode *inode, int half)
+{
+ struct au_iinfo *iinfo;
+ struct au_iigen *iigen;
+ unsigned int sigen;
+
+ sigen = au_sigen(inode->i_sb);
+ iinfo = au_ii(inode);
+ iigen = &iinfo->ii_generation;
+ spin_lock(&iigen->ig_spin);
+ iigen->ig_generation = sigen;
+ if (half)
+ au_ig_fset(iigen->ig_flags, HALF_REFRESHED);
+ else
+ au_ig_fclr(iigen->ig_flags, HALF_REFRESHED);
+ spin_unlock(&iigen->ig_spin);
+}
+
+/* it may be called at remount time, too */
+void au_update_ibrange(struct inode *inode, int do_put_zero)
+{
+ struct au_iinfo *iinfo;
+ aufs_bindex_t bindex, bbot;
+
+ AuDebugOn(au_is_bad_inode(inode));
+ IiMustWriteLock(inode);
+
+ iinfo = au_ii(inode);
+ if (do_put_zero && iinfo->ii_btop >= 0) {
+ for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot;
+ bindex++) {
+ struct inode *h_i;
+
+ h_i = au_hinode(iinfo, bindex)->hi_inode;
+ if (h_i
+ && !h_i->i_nlink
+ && !(h_i->i_state & I_LINKABLE))
+ au_set_h_iptr(inode, bindex, NULL, 0);
+ }
+ }
+
+ iinfo->ii_btop = -1;
+ iinfo->ii_bbot = -1;
+ bbot = au_sbbot(inode->i_sb);
+ for (bindex = 0; bindex <= bbot; bindex++)
+ if (au_hinode(iinfo, bindex)->hi_inode) {
+ iinfo->ii_btop = bindex;
+ break;
+ }
+ if (iinfo->ii_btop >= 0)
+ for (bindex = bbot; bindex >= iinfo->ii_btop; bindex--)
+ if (au_hinode(iinfo, bindex)->hi_inode) {
+ iinfo->ii_bbot = bindex;
+ break;
+ }
+ AuDebugOn(iinfo->ii_btop > iinfo->ii_bbot);
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_icntnr_init_once(void *_c)
+{
+ struct au_icntnr *c = _c;
+ struct au_iinfo *iinfo = &c->iinfo;
+
+ spin_lock_init(&iinfo->ii_generation.ig_spin);
+ au_rw_init(&iinfo->ii_rwsem);
+ inode_init_once(&c->vfs_inode);
+}
+
+void au_hinode_init(struct au_hinode *hinode)
+{
+ hinode->hi_inode = NULL;
+ hinode->hi_id = -1;
+ au_hn_init(hinode);
+ hinode->hi_whdentry = NULL;
+}
+
+int au_iinfo_init(struct inode *inode)
+{
+ struct au_iinfo *iinfo;
+ struct super_block *sb;
+ struct au_hinode *hi;
+ int nbr, i;
+
+ sb = inode->i_sb;
+ iinfo = &(container_of(inode, struct au_icntnr, vfs_inode)->iinfo);
+ nbr = au_sbbot(sb) + 1;
+ if (unlikely(nbr <= 0))
+ nbr = 1;
+ hi = kmalloc_array(nbr, sizeof(*iinfo->ii_hinode), GFP_NOFS);
+ if (hi) {
+ au_lcnt_inc(&au_sbi(sb)->si_ninodes);
+
+ iinfo->ii_hinode = hi;
+ for (i = 0; i < nbr; i++, hi++)
+ au_hinode_init(hi);
+
+ iinfo->ii_generation.ig_generation = au_sigen(sb);
+ iinfo->ii_btop = -1;
+ iinfo->ii_bbot = -1;
+ iinfo->ii_vdir = NULL;
+ return 0;
+ }
+ return -ENOMEM;
+}
+
+int au_hinode_realloc(struct au_iinfo *iinfo, int nbr, int may_shrink)
+{
+ int err, i;
+ struct au_hinode *hip;
+
+ AuRwMustWriteLock(&iinfo->ii_rwsem);
+
+ err = -ENOMEM;
+ hip = au_krealloc(iinfo->ii_hinode, sizeof(*hip) * nbr, GFP_NOFS,
+ may_shrink);
+ if (hip) {
+ iinfo->ii_hinode = hip;
+ i = iinfo->ii_bbot + 1;
+ hip += i;
+ for (; i < nbr; i++, hip++)
+ au_hinode_init(hip);
+ err = 0;
+ }
+
+ return err;
+}
+
+void au_iinfo_fin(struct inode *inode)
+{
+ struct au_iinfo *iinfo;
+ struct au_hinode *hi;
+ struct super_block *sb;
+ aufs_bindex_t bindex, bbot;
+ const unsigned char unlinked = !inode->i_nlink;
+
+ AuDebugOn(au_is_bad_inode(inode));
+
+ sb = inode->i_sb;
+ au_lcnt_dec(&au_sbi(sb)->si_ninodes);
+ if (si_pid_test(sb))
+ au_xino_delete_inode(inode, unlinked);
+ else {
+ /*
+ * it is safe to hide the dependency between sbinfo and
+ * sb->s_umount.
+ */
+ lockdep_off();
+ si_noflush_read_lock(sb);
+ au_xino_delete_inode(inode, unlinked);
+ si_read_unlock(sb);
+ lockdep_on();
+ }
+
+ iinfo = au_ii(inode);
+ if (iinfo->ii_vdir)
+ au_vdir_free(iinfo->ii_vdir);
+
+ bindex = iinfo->ii_btop;
+ if (bindex >= 0) {
+ hi = au_hinode(iinfo, bindex);
+ bbot = iinfo->ii_bbot;
+ while (bindex++ <= bbot) {
+ if (hi->hi_inode)
+ au_hiput(hi);
+ hi++;
+ }
+ }
+ au_kfree_rcu(iinfo->ii_hinode);
+ AuRwDestroy(&iinfo->ii_rwsem);
+}
diff --git a/fs/aufs/inode.c b/fs/aufs/inode.c
new file mode 100644
index 0000000000..985377d9bf
--- /dev/null
+++ b/fs/aufs/inode.c
@@ -0,0 +1,529 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * inode functions
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+struct inode *au_igrab(struct inode *inode)
+{
+ if (inode) {
+ AuDebugOn(!atomic_read(&inode->i_count));
+ ihold(inode);
+ }
+ return inode;
+}
+
+static void au_refresh_hinode_attr(struct inode *inode, int do_version)
+{
+ au_cpup_attr_all(inode, /*force*/0);
+ au_update_iigen(inode, /*half*/1);
+ if (do_version)
+ inode_inc_iversion(inode);
+}
+
+static int au_ii_refresh(struct inode *inode, int *update)
+{
+ int err, e, nbr;
+ umode_t type;
+ aufs_bindex_t bindex, new_bindex;
+ struct super_block *sb;
+ struct au_iinfo *iinfo;
+ struct au_hinode *p, *q, tmp;
+
+ AuDebugOn(au_is_bad_inode(inode));
+ IiMustWriteLock(inode);
+
+ *update = 0;
+ sb = inode->i_sb;
+ nbr = au_sbbot(sb) + 1;
+ type = inode->i_mode & S_IFMT;
+ iinfo = au_ii(inode);
+ err = au_hinode_realloc(iinfo, nbr, /*may_shrink*/0);
+ if (unlikely(err))
+ goto out;
+
+ AuDebugOn(iinfo->ii_btop < 0);
+ p = au_hinode(iinfo, iinfo->ii_btop);
+ for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot;
+ bindex++, p++) {
+ if (!p->hi_inode)
+ continue;
+
+ AuDebugOn(type != (p->hi_inode->i_mode & S_IFMT));
+ new_bindex = au_br_index(sb, p->hi_id);
+ if (new_bindex == bindex)
+ continue;
+
+ if (new_bindex < 0) {
+ *update = 1;
+ au_hiput(p);
+ p->hi_inode = NULL;
+ continue;
+ }
+
+ if (new_bindex < iinfo->ii_btop)
+ iinfo->ii_btop = new_bindex;
+ if (iinfo->ii_bbot < new_bindex)
+ iinfo->ii_bbot = new_bindex;
+ /* swap two lower inode, and loop again */
+ q = au_hinode(iinfo, new_bindex);
+ tmp = *q;
+ *q = *p;
+ *p = tmp;
+ if (tmp.hi_inode) {
+ bindex--;
+ p--;
+ }
+ }
+ au_update_ibrange(inode, /*do_put_zero*/0);
+ au_hinode_realloc(iinfo, nbr, /*may_shrink*/1); /* harmless if err */
+ e = au_dy_irefresh(inode);
+ if (unlikely(e && !err))
+ err = e;
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+void au_refresh_iop(struct inode *inode, int force_getattr)
+{
+ int type;
+ struct au_sbinfo *sbi = au_sbi(inode->i_sb);
+ const struct inode_operations *iop
+ = force_getattr ? aufs_iop : sbi->si_iop_array;
+
+ if (inode->i_op == iop)
+ return;
+
+ switch (inode->i_mode & S_IFMT) {
+ case S_IFDIR:
+ type = AuIop_DIR;
+ break;
+ case S_IFLNK:
+ type = AuIop_SYMLINK;
+ break;
+ default:
+ type = AuIop_OTHER;
+ break;
+ }
+
+ inode->i_op = iop + type;
+ /* unnecessary smp_wmb() */
+}
+
+int au_refresh_hinode_self(struct inode *inode)
+{
+ int err, update;
+
+ err = au_ii_refresh(inode, &update);
+ if (!err)
+ au_refresh_hinode_attr(inode, update && S_ISDIR(inode->i_mode));
+
+ AuTraceErr(err);
+ return err;
+}
+
+int au_refresh_hinode(struct inode *inode, struct dentry *dentry)
+{
+ int err, e, update;
+ unsigned int flags;
+ umode_t mode;
+ aufs_bindex_t bindex, bbot;
+ unsigned char isdir;
+ struct au_hinode *p;
+ struct au_iinfo *iinfo;
+
+ err = au_ii_refresh(inode, &update);
+ if (unlikely(err))
+ goto out;
+
+ update = 0;
+ iinfo = au_ii(inode);
+ p = au_hinode(iinfo, iinfo->ii_btop);
+ mode = (inode->i_mode & S_IFMT);
+ isdir = S_ISDIR(mode);
+ flags = au_hi_flags(inode, isdir);
+ bbot = au_dbbot(dentry);
+ for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++) {
+ struct inode *h_i, *h_inode;
+ struct dentry *h_d;
+
+ h_d = au_h_dptr(dentry, bindex);
+ if (!h_d || d_is_negative(h_d))
+ continue;
+
+ h_inode = d_inode(h_d);
+ AuDebugOn(mode != (h_inode->i_mode & S_IFMT));
+ if (iinfo->ii_btop <= bindex && bindex <= iinfo->ii_bbot) {
+ h_i = au_h_iptr(inode, bindex);
+ if (h_i) {
+ if (h_i == h_inode)
+ continue;
+ err = -EIO;
+ break;
+ }
+ }
+ if (bindex < iinfo->ii_btop)
+ iinfo->ii_btop = bindex;
+ if (iinfo->ii_bbot < bindex)
+ iinfo->ii_bbot = bindex;
+ au_set_h_iptr(inode, bindex, au_igrab(h_inode), flags);
+ update = 1;
+ }
+ au_update_ibrange(inode, /*do_put_zero*/0);
+ e = au_dy_irefresh(inode);
+ if (unlikely(e && !err))
+ err = e;
+ if (!err)
+ au_refresh_hinode_attr(inode, update && isdir);
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+static int set_inode(struct inode *inode, struct dentry *dentry)
+{
+ int err;
+ unsigned int flags;
+ umode_t mode;
+ aufs_bindex_t bindex, btop, btail;
+ unsigned char isdir;
+ struct dentry *h_dentry;
+ struct inode *h_inode;
+ struct au_iinfo *iinfo;
+ struct inode_operations *iop;
+
+ IiMustWriteLock(inode);
+
+ err = 0;
+ isdir = 0;
+ iop = au_sbi(inode->i_sb)->si_iop_array;
+ btop = au_dbtop(dentry);
+ h_dentry = au_h_dptr(dentry, btop);
+ h_inode = d_inode(h_dentry);
+ mode = h_inode->i_mode;
+ switch (mode & S_IFMT) {
+ case S_IFREG:
+ btail = au_dbtail(dentry);
+ inode->i_op = iop + AuIop_OTHER;
+ inode->i_fop = &aufs_file_fop;
+ err = au_dy_iaop(inode, btop, h_inode);
+ if (unlikely(err))
+ goto out;
+ break;
+ case S_IFDIR:
+ isdir = 1;
+ btail = au_dbtaildir(dentry);
+ inode->i_op = iop + AuIop_DIR;
+ inode->i_fop = &aufs_dir_fop;
+ break;
+ case S_IFLNK:
+ btail = au_dbtail(dentry);
+ inode->i_op = iop + AuIop_SYMLINK;
+ break;
+ case S_IFBLK:
+ case S_IFCHR:
+ case S_IFIFO:
+ case S_IFSOCK:
+ btail = au_dbtail(dentry);
+ inode->i_op = iop + AuIop_OTHER;
+ init_special_inode(inode, mode, h_inode->i_rdev);
+ break;
+ default:
+ AuIOErr("Unknown file type 0%o\n", mode);
+ err = -EIO;
+ goto out;
+ }
+
+ /* do not set hnotify for whiteouted dirs (SHWH mode) */
+ flags = au_hi_flags(inode, isdir);
+ if (au_opt_test(au_mntflags(dentry->d_sb), SHWH)
+ && au_ftest_hi(flags, HNOTIFY)
+ && dentry->d_name.len > AUFS_WH_PFX_LEN
+ && !memcmp(dentry->d_name.name, AUFS_WH_PFX, AUFS_WH_PFX_LEN))
+ au_fclr_hi(flags, HNOTIFY);
+ iinfo = au_ii(inode);
+ iinfo->ii_btop = btop;
+ iinfo->ii_bbot = btail;
+ for (bindex = btop; bindex <= btail; bindex++) {
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (h_dentry)
+ au_set_h_iptr(inode, bindex,
+ au_igrab(d_inode(h_dentry)), flags);
+ }
+ au_cpup_attr_all(inode, /*force*/1);
+ /*
+ * to force calling aufs_get_acl() every time,
+ * do not call cache_no_acl() for aufs inode.
+ */
+
+out:
+ return err;
+}
+
+/*
+ * successful returns with iinfo write_locked
+ * minus: errno
+ * zero: success, matched
+ * plus: no error, but unmatched
+ */
+static int reval_inode(struct inode *inode, struct dentry *dentry)
+{
+ int err;
+ unsigned int gen, igflags;
+ aufs_bindex_t bindex, bbot;
+ struct inode *h_inode, *h_dinode;
+ struct dentry *h_dentry;
+
+ /*
+ * before this function, if aufs got any iinfo lock, it must be only
+ * one, the parent dir.
+ * it can happen by UDBA and the obsoleted inode number.
+ */
+ err = -EIO;
+ if (unlikely(inode->i_ino == parent_ino(dentry)))
+ goto out;
+
+ err = 1;
+ ii_write_lock_new_child(inode);
+ h_dentry = au_h_dptr(dentry, au_dbtop(dentry));
+ h_dinode = d_inode(h_dentry);
+ bbot = au_ibbot(inode);
+ for (bindex = au_ibtop(inode); bindex <= bbot; bindex++) {
+ h_inode = au_h_iptr(inode, bindex);
+ if (!h_inode || h_inode != h_dinode)
+ continue;
+
+ err = 0;
+ gen = au_iigen(inode, &igflags);
+ if (gen == au_digen(dentry)
+ && !au_ig_ftest(igflags, HALF_REFRESHED))
+ break;
+
+ /* fully refresh inode using dentry */
+ err = au_refresh_hinode(inode, dentry);
+ if (!err)
+ au_update_iigen(inode, /*half*/0);
+ break;
+ }
+
+ if (unlikely(err))
+ ii_write_unlock(inode);
+out:
+ return err;
+}
+
+int au_ino(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+ unsigned int d_type, ino_t *ino)
+{
+ int err, idx;
+ const int isnondir = d_type != DT_DIR;
+
+ /* prevent hardlinked inode number from race condition */
+ if (isnondir) {
+ err = au_xinondir_enter(sb, bindex, h_ino, &idx);
+ if (unlikely(err))
+ goto out;
+ }
+
+ err = au_xino_read(sb, bindex, h_ino, ino);
+ if (unlikely(err))
+ goto out_xinondir;
+
+ if (!*ino) {
+ err = -EIO;
+ *ino = au_xino_new_ino(sb);
+ if (unlikely(!*ino))
+ goto out_xinondir;
+ err = au_xino_write(sb, bindex, h_ino, *ino);
+ if (unlikely(err))
+ goto out_xinondir;
+ }
+
+out_xinondir:
+ if (isnondir && idx >= 0)
+ au_xinondir_leave(sb, bindex, h_ino, idx);
+out:
+ return err;
+}
+
+/* successful returns with iinfo write_locked */
+/* todo: return with unlocked? */
+struct inode *au_new_inode(struct dentry *dentry, int must_new)
+{
+ struct inode *inode, *h_inode;
+ struct dentry *h_dentry;
+ struct super_block *sb;
+ ino_t h_ino, ino;
+ int err, idx, hlinked;
+ aufs_bindex_t btop;
+
+ sb = dentry->d_sb;
+ btop = au_dbtop(dentry);
+ h_dentry = au_h_dptr(dentry, btop);
+ h_inode = d_inode(h_dentry);
+ h_ino = h_inode->i_ino;
+ hlinked = !d_is_dir(h_dentry) && h_inode->i_nlink > 1;
+
+new_ino:
+ /*
+ * stop 'race'-ing between hardlinks under different
+ * parents.
+ */
+ if (hlinked) {
+ err = au_xinondir_enter(sb, btop, h_ino, &idx);
+ inode = ERR_PTR(err);
+ if (unlikely(err))
+ goto out;
+ }
+
+ err = au_xino_read(sb, btop, h_ino, &ino);
+ inode = ERR_PTR(err);
+ if (unlikely(err))
+ goto out_xinondir;
+
+ if (!ino) {
+ ino = au_xino_new_ino(sb);
+ if (unlikely(!ino)) {
+ inode = ERR_PTR(-EIO);
+ goto out_xinondir;
+ }
+ }
+
+ AuDbg("i%lu\n", (unsigned long)ino);
+ inode = au_iget_locked(sb, ino);
+ err = PTR_ERR(inode);
+ if (IS_ERR(inode))
+ goto out_xinondir;
+
+ AuDbg("%lx, new %d\n", inode->i_state, !!(inode->i_state & I_NEW));
+ if (inode->i_state & I_NEW) {
+ ii_write_lock_new_child(inode);
+ err = set_inode(inode, dentry);
+ if (!err) {
+ unlock_new_inode(inode);
+ goto out_xinondir; /* success */
+ }
+
+ /*
+ * iget_failed() calls iput(), but we need to call
+ * ii_write_unlock() after iget_failed(). so dirty hack for
+ * i_count.
+ */
+ atomic_inc(&inode->i_count);
+ iget_failed(inode);
+ ii_write_unlock(inode);
+ au_xino_write(sb, btop, h_ino, /*ino*/0);
+ /* ignore this error */
+ goto out_iput;
+ } else if (!must_new && !IS_DEADDIR(inode) && inode->i_nlink) {
+ /*
+ * horrible race condition between lookup, readdir and copyup
+ * (or something).
+ */
+ if (hlinked && idx >= 0)
+ au_xinondir_leave(sb, btop, h_ino, idx);
+ err = reval_inode(inode, dentry);
+ if (unlikely(err < 0)) {
+ hlinked = 0;
+ goto out_iput;
+ }
+ if (!err)
+ goto out; /* success */
+ else if (hlinked && idx >= 0) {
+ err = au_xinondir_enter(sb, btop, h_ino, &idx);
+ if (unlikely(err)) {
+ iput(inode);
+ inode = ERR_PTR(err);
+ goto out;
+ }
+ }
+ }
+
+ if (unlikely(au_test_fs_unique_ino(h_inode)))
+ AuWarn1("Warning: Un-notified UDBA or repeatedly renamed dir,"
+ " b%d, %s, %pd, hi%lu, i%lu.\n",
+ btop, au_sbtype(h_dentry->d_sb), dentry,
+ (unsigned long)h_ino, (unsigned long)ino);
+ ino = 0;
+ err = au_xino_write(sb, btop, h_ino, /*ino*/0);
+ if (!err) {
+ iput(inode);
+ if (hlinked && idx >= 0)
+ au_xinondir_leave(sb, btop, h_ino, idx);
+ goto new_ino;
+ }
+
+out_iput:
+ iput(inode);
+ inode = ERR_PTR(err);
+out_xinondir:
+ if (hlinked && idx >= 0)
+ au_xinondir_leave(sb, btop, h_ino, idx);
+out:
+ return inode;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_test_ro(struct super_block *sb, aufs_bindex_t bindex,
+ struct inode *inode)
+{
+ int err;
+ struct inode *hi;
+
+ err = au_br_rdonly(au_sbr(sb, bindex));
+
+ /* pseudo-link after flushed may happen out of bounds */
+ if (!err
+ && inode
+ && au_ibtop(inode) <= bindex
+ && bindex <= au_ibbot(inode)) {
+ /*
+ * permission check is unnecessary since vfsub routine
+ * will be called later
+ */
+ hi = au_h_iptr(inode, bindex);
+ if (hi)
+ err = IS_IMMUTABLE(hi) ? -EROFS : 0;
+ }
+
+ return err;
+}
+
+int au_test_h_perm(struct inode *h_inode, int mask)
+{
+ if (uid_eq(current_fsuid(), GLOBAL_ROOT_UID))
+ return 0;
+ return inode_permission(h_inode, mask);
+}
+
+int au_test_h_perm_sio(struct inode *h_inode, int mask)
+{
+ if (au_test_nfs(h_inode->i_sb)
+ && (mask & MAY_WRITE)
+ && S_ISDIR(h_inode->i_mode))
+ mask |= MAY_READ; /* force permission check */
+ return au_test_h_perm(h_inode, mask);
+}
diff --git a/fs/aufs/inode.h b/fs/aufs/inode.h
new file mode 100644
index 0000000000..e387ef16e9
--- /dev/null
+++ b/fs/aufs/inode.h
@@ -0,0 +1,698 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * inode operations
+ */
+
+#ifndef __AUFS_INODE_H__
+#define __AUFS_INODE_H__
+
+#ifdef __KERNEL__
+
+#include <linux/fsnotify.h>
+#include "rwsem.h"
+
+struct vfsmount;
+
+struct au_hnotify {
+#ifdef CONFIG_AUFS_HNOTIFY
+#ifdef CONFIG_AUFS_HFSNOTIFY
+ /* never use fsnotify_add_vfsmount_mark() */
+ struct fsnotify_mark hn_mark;
+#endif
+ struct inode *hn_aufs_inode; /* no get/put */
+ struct rcu_head rcu;
+#endif
+} ____cacheline_aligned_in_smp;
+
+struct au_hinode {
+ struct inode *hi_inode;
+ aufs_bindex_t hi_id;
+#ifdef CONFIG_AUFS_HNOTIFY
+ struct au_hnotify *hi_notify;
+#endif
+
+ /* reference to the copied-up whiteout with get/put */
+ struct dentry *hi_whdentry;
+};
+
+/* ig_flags */
+#define AuIG_HALF_REFRESHED 1
+#define au_ig_ftest(flags, name) ((flags) & AuIG_##name)
+#define au_ig_fset(flags, name) \
+ do { (flags) |= AuIG_##name; } while (0)
+#define au_ig_fclr(flags, name) \
+ do { (flags) &= ~AuIG_##name; } while (0)
+
+struct au_iigen {
+ spinlock_t ig_spin;
+ __u32 ig_generation, ig_flags;
+};
+
+struct au_vdir;
+struct au_iinfo {
+ struct au_iigen ii_generation;
+ struct super_block *ii_hsb1; /* no get/put */
+
+ struct au_rwsem ii_rwsem;
+ aufs_bindex_t ii_btop, ii_bbot;
+ __u32 ii_higen;
+ struct au_hinode *ii_hinode;
+ struct au_vdir *ii_vdir;
+};
+
+struct au_icntnr {
+ struct au_iinfo iinfo;
+ struct inode vfs_inode;
+ struct hlist_bl_node plink;
+ struct rcu_head rcu;
+} ____cacheline_aligned_in_smp;
+
+/* au_pin flags */
+#define AuPin_DI_LOCKED 1
+#define AuPin_MNT_WRITE (1 << 1)
+#define au_ftest_pin(flags, name) ((flags) & AuPin_##name)
+#define au_fset_pin(flags, name) \
+ do { (flags) |= AuPin_##name; } while (0)
+#define au_fclr_pin(flags, name) \
+ do { (flags) &= ~AuPin_##name; } while (0)
+
+struct au_pin {
+ /* input */
+ struct dentry *dentry;
+ unsigned int udba;
+ unsigned char lsc_di, lsc_hi, flags;
+ aufs_bindex_t bindex;
+
+ /* output */
+ struct dentry *parent;
+ struct au_hinode *hdir;
+ struct vfsmount *h_mnt;
+
+ /* temporary unlock/relock for copyup */
+ struct dentry *h_dentry, *h_parent;
+ struct au_branch *br;
+ struct task_struct *task;
+};
+
+void au_pin_hdir_unlock(struct au_pin *p);
+int au_pin_hdir_lock(struct au_pin *p);
+int au_pin_hdir_relock(struct au_pin *p);
+void au_pin_hdir_acquire_nest(struct au_pin *p);
+void au_pin_hdir_release(struct au_pin *p);
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct au_iinfo *au_ii(struct inode *inode)
+{
+ BUG_ON(is_bad_inode(inode));
+ return &(container_of(inode, struct au_icntnr, vfs_inode)->iinfo);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* inode.c */
+struct inode *au_igrab(struct inode *inode);
+void au_refresh_iop(struct inode *inode, int force_getattr);
+int au_refresh_hinode_self(struct inode *inode);
+int au_refresh_hinode(struct inode *inode, struct dentry *dentry);
+int au_ino(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+ unsigned int d_type, ino_t *ino);
+struct inode *au_new_inode(struct dentry *dentry, int must_new);
+int au_test_ro(struct super_block *sb, aufs_bindex_t bindex,
+ struct inode *inode);
+int au_test_h_perm(struct inode *h_inode, int mask);
+int au_test_h_perm_sio(struct inode *h_inode, int mask);
+
+static inline int au_wh_ino(struct super_block *sb, aufs_bindex_t bindex,
+ ino_t h_ino, unsigned int d_type, ino_t *ino)
+{
+#ifdef CONFIG_AUFS_SHWH
+ return au_ino(sb, bindex, h_ino, d_type, ino);
+#else
+ return 0;
+#endif
+}
+
+/* i_op.c */
+enum {
+ AuIop_SYMLINK,
+ AuIop_DIR,
+ AuIop_OTHER,
+ AuIop_Last
+};
+extern struct inode_operations aufs_iop[AuIop_Last],
+ aufs_iop_nogetattr[AuIop_Last];
+
+/* au_wr_dir flags */
+#define AuWrDir_ADD_ENTRY 1
+#define AuWrDir_ISDIR (1 << 1)
+#define AuWrDir_TMPFILE (1 << 2)
+#define au_ftest_wrdir(flags, name) ((flags) & AuWrDir_##name)
+#define au_fset_wrdir(flags, name) \
+ do { (flags) |= AuWrDir_##name; } while (0)
+#define au_fclr_wrdir(flags, name) \
+ do { (flags) &= ~AuWrDir_##name; } while (0)
+
+struct au_wr_dir_args {
+ aufs_bindex_t force_btgt;
+ unsigned char flags;
+};
+int au_wr_dir(struct dentry *dentry, struct dentry *src_dentry,
+ struct au_wr_dir_args *args);
+
+struct dentry *au_pinned_h_parent(struct au_pin *pin);
+void au_pin_init(struct au_pin *pin, struct dentry *dentry,
+ aufs_bindex_t bindex, int lsc_di, int lsc_hi,
+ unsigned int udba, unsigned char flags);
+int au_pin(struct au_pin *pin, struct dentry *dentry, aufs_bindex_t bindex,
+ unsigned int udba, unsigned char flags) __must_check;
+int au_do_pin(struct au_pin *pin) __must_check;
+void au_unpin(struct au_pin *pin);
+int au_reval_for_attr(struct dentry *dentry, unsigned int sigen);
+
+#define AuIcpup_DID_CPUP 1
+#define au_ftest_icpup(flags, name) ((flags) & AuIcpup_##name)
+#define au_fset_icpup(flags, name) \
+ do { (flags) |= AuIcpup_##name; } while (0)
+#define au_fclr_icpup(flags, name) \
+ do { (flags) &= ~AuIcpup_##name; } while (0)
+
+struct au_icpup_args {
+ unsigned char flags;
+ unsigned char pin_flags;
+ aufs_bindex_t btgt;
+ unsigned int udba;
+ struct au_pin pin;
+ struct path h_path;
+ struct inode *h_inode;
+};
+
+int au_pin_and_icpup(struct dentry *dentry, struct iattr *ia,
+ struct au_icpup_args *a);
+
+int au_h_path_getattr(struct dentry *dentry, int force, struct path *h_path,
+ int locked);
+
+/* i_op_add.c */
+int au_may_add(struct dentry *dentry, aufs_bindex_t bindex,
+ struct dentry *h_parent, int isdir);
+int aufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
+ dev_t dev);
+int aufs_symlink(struct inode *dir, struct dentry *dentry, const char *symname);
+int aufs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
+ bool want_excl);
+struct vfsub_aopen_args;
+int au_aopen_or_create(struct inode *dir, struct dentry *dentry,
+ struct vfsub_aopen_args *args);
+int aufs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode);
+int aufs_link(struct dentry *src_dentry, struct inode *dir,
+ struct dentry *dentry);
+int aufs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
+
+/* i_op_del.c */
+int au_wr_dir_need_wh(struct dentry *dentry, int isdir, aufs_bindex_t *bcpup);
+int au_may_del(struct dentry *dentry, aufs_bindex_t bindex,
+ struct dentry *h_parent, int isdir);
+int aufs_unlink(struct inode *dir, struct dentry *dentry);
+int aufs_rmdir(struct inode *dir, struct dentry *dentry);
+
+/* i_op_ren.c */
+int au_wbr(struct dentry *dentry, aufs_bindex_t btgt);
+int aufs_rename(struct inode *src_dir, struct dentry *src_dentry,
+ struct inode *dir, struct dentry *dentry,
+ unsigned int flags);
+
+/* iinfo.c */
+struct inode *au_h_iptr(struct inode *inode, aufs_bindex_t bindex);
+void au_hiput(struct au_hinode *hinode);
+void au_set_hi_wh(struct inode *inode, aufs_bindex_t bindex,
+ struct dentry *h_wh);
+unsigned int au_hi_flags(struct inode *inode, int isdir);
+
+/* hinode flags */
+#define AuHi_XINO 1
+#define AuHi_HNOTIFY (1 << 1)
+#define au_ftest_hi(flags, name) ((flags) & AuHi_##name)
+#define au_fset_hi(flags, name) \
+ do { (flags) |= AuHi_##name; } while (0)
+#define au_fclr_hi(flags, name) \
+ do { (flags) &= ~AuHi_##name; } while (0)
+
+#ifndef CONFIG_AUFS_HNOTIFY
+#undef AuHi_HNOTIFY
+#define AuHi_HNOTIFY 0
+#endif
+
+void au_set_h_iptr(struct inode *inode, aufs_bindex_t bindex,
+ struct inode *h_inode, unsigned int flags);
+
+void au_update_iigen(struct inode *inode, int half);
+void au_update_ibrange(struct inode *inode, int do_put_zero);
+
+void au_icntnr_init_once(void *_c);
+void au_hinode_init(struct au_hinode *hinode);
+int au_iinfo_init(struct inode *inode);
+void au_iinfo_fin(struct inode *inode);
+int au_hinode_realloc(struct au_iinfo *iinfo, int nbr, int may_shrink);
+
+#ifdef CONFIG_PROC_FS
+/* plink.c */
+int au_plink_maint(struct super_block *sb, int flags);
+struct au_sbinfo;
+void au_plink_maint_leave(struct au_sbinfo *sbinfo);
+int au_plink_maint_enter(struct super_block *sb);
+#ifdef CONFIG_AUFS_DEBUG
+void au_plink_list(struct super_block *sb);
+#else
+AuStubVoid(au_plink_list, struct super_block *sb)
+#endif
+int au_plink_test(struct inode *inode);
+struct dentry *au_plink_lkup(struct inode *inode, aufs_bindex_t bindex);
+void au_plink_append(struct inode *inode, aufs_bindex_t bindex,
+ struct dentry *h_dentry);
+void au_plink_put(struct super_block *sb, int verbose);
+void au_plink_clean(struct super_block *sb, int verbose);
+void au_plink_half_refresh(struct super_block *sb, aufs_bindex_t br_id);
+#else
+AuStubInt0(au_plink_maint, struct super_block *sb, int flags);
+AuStubVoid(au_plink_maint_leave, struct au_sbinfo *sbinfo);
+AuStubInt0(au_plink_maint_enter, struct super_block *sb);
+AuStubVoid(au_plink_list, struct super_block *sb);
+AuStubInt0(au_plink_test, struct inode *inode);
+AuStub(struct dentry *, au_plink_lkup, return NULL,
+ struct inode *inode, aufs_bindex_t bindex);
+AuStubVoid(au_plink_append, struct inode *inode, aufs_bindex_t bindex,
+ struct dentry *h_dentry);
+AuStubVoid(au_plink_put, struct super_block *sb, int verbose);
+AuStubVoid(au_plink_clean, struct super_block *sb, int verbose);
+AuStubVoid(au_plink_half_refresh, struct super_block *sb, aufs_bindex_t br_id);
+#endif /* CONFIG_PROC_FS */
+
+#ifdef CONFIG_AUFS_XATTR
+/* xattr.c */
+int au_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, int ignore_flags,
+ unsigned int verbose);
+ssize_t aufs_listxattr(struct dentry *dentry, char *list, size_t size);
+void au_xattr_init(struct super_block *sb);
+#else
+AuStubInt0(au_cpup_xattr, struct dentry *h_dst, struct dentry *h_src,
+ int ignore_flags, unsigned int verbose);
+AuStubVoid(au_xattr_init, struct super_block *sb);
+#endif
+
+#ifdef CONFIG_FS_POSIX_ACL
+struct posix_acl *aufs_get_acl(struct inode *inode, int type);
+int aufs_set_acl(struct inode *inode, struct posix_acl *acl, int type);
+#endif
+
+#if IS_ENABLED(CONFIG_AUFS_XATTR) || IS_ENABLED(CONFIG_FS_POSIX_ACL)
+enum {
+ AU_XATTR_SET,
+ AU_ACL_SET
+};
+
+struct au_sxattr {
+ int type;
+ union {
+ struct {
+ const char *name;
+ const void *value;
+ size_t size;
+ int flags;
+ } set;
+ struct {
+ struct posix_acl *acl;
+ int type;
+ } acl_set;
+ } u;
+};
+ssize_t au_sxattr(struct dentry *dentry, struct inode *inode,
+ struct au_sxattr *arg);
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+/* lock subclass for iinfo */
+enum {
+ AuLsc_II_CHILD, /* child first */
+ AuLsc_II_CHILD2, /* rename(2), link(2), and cpup at hnotify */
+ AuLsc_II_CHILD3, /* copyup dirs */
+ AuLsc_II_PARENT, /* see AuLsc_I_PARENT in vfsub.h */
+ AuLsc_II_PARENT2,
+ AuLsc_II_PARENT3, /* copyup dirs */
+ AuLsc_II_NEW_CHILD
+};
+
+/*
+ * ii_read_lock_child, ii_write_lock_child,
+ * ii_read_lock_child2, ii_write_lock_child2,
+ * ii_read_lock_child3, ii_write_lock_child3,
+ * ii_read_lock_parent, ii_write_lock_parent,
+ * ii_read_lock_parent2, ii_write_lock_parent2,
+ * ii_read_lock_parent3, ii_write_lock_parent3,
+ * ii_read_lock_new_child, ii_write_lock_new_child,
+ */
+#define AuReadLockFunc(name, lsc) \
+static inline void ii_read_lock_##name(struct inode *i) \
+{ \
+ au_rw_read_lock_nested(&au_ii(i)->ii_rwsem, AuLsc_II_##lsc); \
+}
+
+#define AuWriteLockFunc(name, lsc) \
+static inline void ii_write_lock_##name(struct inode *i) \
+{ \
+ au_rw_write_lock_nested(&au_ii(i)->ii_rwsem, AuLsc_II_##lsc); \
+}
+
+#define AuRWLockFuncs(name, lsc) \
+ AuReadLockFunc(name, lsc) \
+ AuWriteLockFunc(name, lsc)
+
+AuRWLockFuncs(child, CHILD);
+AuRWLockFuncs(child2, CHILD2);
+AuRWLockFuncs(child3, CHILD3);
+AuRWLockFuncs(parent, PARENT);
+AuRWLockFuncs(parent2, PARENT2);
+AuRWLockFuncs(parent3, PARENT3);
+AuRWLockFuncs(new_child, NEW_CHILD);
+
+#undef AuReadLockFunc
+#undef AuWriteLockFunc
+#undef AuRWLockFuncs
+
+#define ii_read_unlock(i) au_rw_read_unlock(&au_ii(i)->ii_rwsem)
+#define ii_write_unlock(i) au_rw_write_unlock(&au_ii(i)->ii_rwsem)
+#define ii_downgrade_lock(i) au_rw_dgrade_lock(&au_ii(i)->ii_rwsem)
+
+#define IiMustNoWaiters(i) AuRwMustNoWaiters(&au_ii(i)->ii_rwsem)
+#define IiMustAnyLock(i) AuRwMustAnyLock(&au_ii(i)->ii_rwsem)
+#define IiMustWriteLock(i) AuRwMustWriteLock(&au_ii(i)->ii_rwsem)
+
+/* ---------------------------------------------------------------------- */
+
+static inline void au_icntnr_init(struct au_icntnr *c)
+{
+#ifdef CONFIG_AUFS_DEBUG
+ c->vfs_inode.i_mode = 0;
+#endif
+}
+
+static inline unsigned int au_iigen(struct inode *inode, unsigned int *igflags)
+{
+ unsigned int gen;
+ struct au_iinfo *iinfo;
+ struct au_iigen *iigen;
+
+ iinfo = au_ii(inode);
+ iigen = &iinfo->ii_generation;
+ spin_lock(&iigen->ig_spin);
+ if (igflags)
+ *igflags = iigen->ig_flags;
+ gen = iigen->ig_generation;
+ spin_unlock(&iigen->ig_spin);
+
+ return gen;
+}
+
+/* tiny test for inode number */
+/* tmpfs generation is too rough */
+static inline int au_test_higen(struct inode *inode, struct inode *h_inode)
+{
+ struct au_iinfo *iinfo;
+
+ iinfo = au_ii(inode);
+ AuRwMustAnyLock(&iinfo->ii_rwsem);
+ return !(iinfo->ii_hsb1 == h_inode->i_sb
+ && iinfo->ii_higen == h_inode->i_generation);
+}
+
+static inline void au_iigen_dec(struct inode *inode)
+{
+ struct au_iinfo *iinfo;
+ struct au_iigen *iigen;
+
+ iinfo = au_ii(inode);
+ iigen = &iinfo->ii_generation;
+ spin_lock(&iigen->ig_spin);
+ iigen->ig_generation--;
+ spin_unlock(&iigen->ig_spin);
+}
+
+static inline int au_iigen_test(struct inode *inode, unsigned int sigen)
+{
+ int err;
+
+ err = 0;
+ if (unlikely(inode && au_iigen(inode, NULL) != sigen))
+ err = -EIO;
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct au_hinode *au_hinode(struct au_iinfo *iinfo,
+ aufs_bindex_t bindex)
+{
+ return iinfo->ii_hinode + bindex;
+}
+
+static inline int au_is_bad_inode(struct inode *inode)
+{
+ return !!(is_bad_inode(inode) || !au_hinode(au_ii(inode), 0));
+}
+
+static inline aufs_bindex_t au_ii_br_id(struct inode *inode,
+ aufs_bindex_t bindex)
+{
+ IiMustAnyLock(inode);
+ return au_hinode(au_ii(inode), bindex)->hi_id;
+}
+
+static inline aufs_bindex_t au_ibtop(struct inode *inode)
+{
+ IiMustAnyLock(inode);
+ return au_ii(inode)->ii_btop;
+}
+
+static inline aufs_bindex_t au_ibbot(struct inode *inode)
+{
+ IiMustAnyLock(inode);
+ return au_ii(inode)->ii_bbot;
+}
+
+static inline struct au_vdir *au_ivdir(struct inode *inode)
+{
+ IiMustAnyLock(inode);
+ return au_ii(inode)->ii_vdir;
+}
+
+static inline struct dentry *au_hi_wh(struct inode *inode, aufs_bindex_t bindex)
+{
+ IiMustAnyLock(inode);
+ return au_hinode(au_ii(inode), bindex)->hi_whdentry;
+}
+
+static inline void au_set_ibtop(struct inode *inode, aufs_bindex_t bindex)
+{
+ IiMustWriteLock(inode);
+ au_ii(inode)->ii_btop = bindex;
+}
+
+static inline void au_set_ibbot(struct inode *inode, aufs_bindex_t bindex)
+{
+ IiMustWriteLock(inode);
+ au_ii(inode)->ii_bbot = bindex;
+}
+
+static inline void au_set_ivdir(struct inode *inode, struct au_vdir *vdir)
+{
+ IiMustWriteLock(inode);
+ au_ii(inode)->ii_vdir = vdir;
+}
+
+static inline struct au_hinode *au_hi(struct inode *inode, aufs_bindex_t bindex)
+{
+ IiMustAnyLock(inode);
+ return au_hinode(au_ii(inode), bindex);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct dentry *au_pinned_parent(struct au_pin *pin)
+{
+ if (pin)
+ return pin->parent;
+ return NULL;
+}
+
+static inline struct inode *au_pinned_h_dir(struct au_pin *pin)
+{
+ if (pin && pin->hdir)
+ return pin->hdir->hi_inode;
+ return NULL;
+}
+
+static inline struct au_hinode *au_pinned_hdir(struct au_pin *pin)
+{
+ if (pin)
+ return pin->hdir;
+ return NULL;
+}
+
+static inline void au_pin_set_dentry(struct au_pin *pin, struct dentry *dentry)
+{
+ if (pin)
+ pin->dentry = dentry;
+}
+
+static inline void au_pin_set_parent_lflag(struct au_pin *pin,
+ unsigned char lflag)
+{
+ if (pin) {
+ if (lflag)
+ au_fset_pin(pin->flags, DI_LOCKED);
+ else
+ au_fclr_pin(pin->flags, DI_LOCKED);
+ }
+}
+
+#if 0 /* reserved */
+static inline void au_pin_set_parent(struct au_pin *pin, struct dentry *parent)
+{
+ if (pin) {
+ dput(pin->parent);
+ pin->parent = dget(parent);
+ }
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+struct au_branch;
+#ifdef CONFIG_AUFS_HNOTIFY
+struct au_hnotify_op {
+ void (*ctl)(struct au_hinode *hinode, int do_set);
+ int (*alloc)(struct au_hinode *hinode);
+
+ /*
+ * if it returns true, the the caller should free hinode->hi_notify,
+ * otherwise ->free() frees it.
+ */
+ int (*free)(struct au_hinode *hinode,
+ struct au_hnotify *hn) __must_check;
+
+ void (*fin)(void);
+ int (*init)(void);
+
+ int (*reset_br)(unsigned int udba, struct au_branch *br, int perm);
+ void (*fin_br)(struct au_branch *br);
+ int (*init_br)(struct au_branch *br, int perm);
+};
+
+/* hnotify.c */
+int au_hn_alloc(struct au_hinode *hinode, struct inode *inode);
+void au_hn_free(struct au_hinode *hinode);
+void au_hn_ctl(struct au_hinode *hinode, int do_set);
+void au_hn_reset(struct inode *inode, unsigned int flags);
+int au_hnotify(struct inode *h_dir, struct au_hnotify *hnotify, u32 mask,
+ const struct qstr *h_child_qstr, struct inode *h_child_inode);
+int au_hnotify_reset_br(unsigned int udba, struct au_branch *br, int perm);
+int au_hnotify_init_br(struct au_branch *br, int perm);
+void au_hnotify_fin_br(struct au_branch *br);
+int __init au_hnotify_init(void);
+void au_hnotify_fin(void);
+
+/* hfsnotify.c */
+extern const struct au_hnotify_op au_hnotify_op;
+
+static inline
+void au_hn_init(struct au_hinode *hinode)
+{
+ hinode->hi_notify = NULL;
+}
+
+static inline struct au_hnotify *au_hn(struct au_hinode *hinode)
+{
+ return hinode->hi_notify;
+}
+
+#else
+AuStub(int, au_hn_alloc, return -EOPNOTSUPP,
+ struct au_hinode *hinode __maybe_unused,
+ struct inode *inode __maybe_unused)
+AuStub(struct au_hnotify *, au_hn, return NULL, struct au_hinode *hinode)
+AuStubVoid(au_hn_free, struct au_hinode *hinode __maybe_unused)
+AuStubVoid(au_hn_ctl, struct au_hinode *hinode __maybe_unused,
+ int do_set __maybe_unused)
+AuStubVoid(au_hn_reset, struct inode *inode __maybe_unused,
+ unsigned int flags __maybe_unused)
+AuStubInt0(au_hnotify_reset_br, unsigned int udba __maybe_unused,
+ struct au_branch *br __maybe_unused,
+ int perm __maybe_unused)
+AuStubInt0(au_hnotify_init_br, struct au_branch *br __maybe_unused,
+ int perm __maybe_unused)
+AuStubVoid(au_hnotify_fin_br, struct au_branch *br __maybe_unused)
+AuStubInt0(__init au_hnotify_init, void)
+AuStubVoid(au_hnotify_fin, void)
+AuStubVoid(au_hn_init, struct au_hinode *hinode __maybe_unused)
+#endif /* CONFIG_AUFS_HNOTIFY */
+
+static inline void au_hn_suspend(struct au_hinode *hdir)
+{
+ au_hn_ctl(hdir, /*do_set*/0);
+}
+
+static inline void au_hn_resume(struct au_hinode *hdir)
+{
+ au_hn_ctl(hdir, /*do_set*/1);
+}
+
+static inline void au_hn_inode_lock(struct au_hinode *hdir)
+{
+ inode_lock(hdir->hi_inode);
+ au_hn_suspend(hdir);
+}
+
+static inline void au_hn_inode_lock_nested(struct au_hinode *hdir,
+ unsigned int sc __maybe_unused)
+{
+ inode_lock_nested(hdir->hi_inode, sc);
+ au_hn_suspend(hdir);
+}
+
+#if 0 /* unused */
+#include "vfsub.h"
+static inline void au_hn_inode_lock_shared_nested(struct au_hinode *hdir,
+ unsigned int sc)
+{
+ inode_lock_shared_nested(hdir->hi_inode, sc);
+ au_hn_suspend(hdir);
+}
+#endif
+
+static inline void au_hn_inode_unlock(struct au_hinode *hdir)
+{
+ au_hn_resume(hdir);
+ inode_unlock(hdir->hi_inode);
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_INODE_H__ */
diff --git a/fs/aufs/ioctl.c b/fs/aufs/ioctl.c
new file mode 100644
index 0000000000..fb2fb75828
--- /dev/null
+++ b/fs/aufs/ioctl.c
@@ -0,0 +1,220 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * ioctl
+ * plink-management and readdir in userspace.
+ * assist the pathconf(3) wrapper library.
+ * move-down
+ * File-based Hierarchical Storage Management.
+ */
+
+#include <linux/compat.h>
+#include <linux/file.h>
+#include "aufs.h"
+
+static int au_wbr_fd(struct path *path, struct aufs_wbr_fd __user *arg)
+{
+ int err, fd;
+ aufs_bindex_t wbi, bindex, bbot;
+ struct file *h_file;
+ struct super_block *sb;
+ struct dentry *root;
+ struct au_branch *br;
+ struct aufs_wbr_fd wbrfd = {
+ .oflags = au_dir_roflags,
+ .brid = -1
+ };
+ const int valid = O_RDONLY | O_NONBLOCK | O_LARGEFILE | O_DIRECTORY
+ | O_NOATIME | O_CLOEXEC;
+
+ AuDebugOn(wbrfd.oflags & ~valid);
+
+ if (arg) {
+ err = copy_from_user(&wbrfd, arg, sizeof(wbrfd));
+ if (unlikely(err)) {
+ err = -EFAULT;
+ goto out;
+ }
+
+ err = -EINVAL;
+ AuDbg("wbrfd{0%o, %d}\n", wbrfd.oflags, wbrfd.brid);
+ wbrfd.oflags |= au_dir_roflags;
+ AuDbg("0%o\n", wbrfd.oflags);
+ if (unlikely(wbrfd.oflags & ~valid))
+ goto out;
+ }
+
+ fd = get_unused_fd_flags(0);
+ err = fd;
+ if (unlikely(fd < 0))
+ goto out;
+
+ h_file = ERR_PTR(-EINVAL);
+ wbi = 0;
+ br = NULL;
+ sb = path->dentry->d_sb;
+ root = sb->s_root;
+ aufs_read_lock(root, AuLock_IR);
+ bbot = au_sbbot(sb);
+ if (wbrfd.brid >= 0) {
+ wbi = au_br_index(sb, wbrfd.brid);
+ if (unlikely(wbi < 0 || wbi > bbot))
+ goto out_unlock;
+ }
+
+ h_file = ERR_PTR(-ENOENT);
+ br = au_sbr(sb, wbi);
+ if (!au_br_writable(br->br_perm)) {
+ if (arg)
+ goto out_unlock;
+
+ bindex = wbi + 1;
+ wbi = -1;
+ for (; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ if (au_br_writable(br->br_perm)) {
+ wbi = bindex;
+ br = au_sbr(sb, wbi);
+ break;
+ }
+ }
+ }
+ AuDbg("wbi %d\n", wbi);
+ if (wbi >= 0)
+ h_file = au_h_open(root, wbi, wbrfd.oflags, NULL,
+ /*force_wr*/0);
+
+out_unlock:
+ aufs_read_unlock(root, AuLock_IR);
+ err = PTR_ERR(h_file);
+ if (IS_ERR(h_file))
+ goto out_fd;
+
+ au_lcnt_dec(&br->br_nfiles); /* cf. au_h_open() */
+ fd_install(fd, h_file);
+ err = fd;
+ goto out; /* success */
+
+out_fd:
+ put_unused_fd(fd);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+long aufs_ioctl_dir(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ long err;
+ struct dentry *dentry;
+
+ switch (cmd) {
+ case AUFS_CTL_RDU:
+ case AUFS_CTL_RDU_INO:
+ err = au_rdu_ioctl(file, cmd, arg);
+ break;
+
+ case AUFS_CTL_WBR_FD:
+ err = au_wbr_fd(&file->f_path, (void __user *)arg);
+ break;
+
+ case AUFS_CTL_IBUSY:
+ err = au_ibusy_ioctl(file, arg);
+ break;
+
+ case AUFS_CTL_BRINFO:
+ err = au_brinfo_ioctl(file, arg);
+ break;
+
+ case AUFS_CTL_FHSM_FD:
+ dentry = file->f_path.dentry;
+ if (IS_ROOT(dentry))
+ err = au_fhsm_fd(dentry->d_sb, arg);
+ else
+ err = -ENOTTY;
+ break;
+
+ default:
+ /* do not call the lower */
+ AuDbg("0x%x\n", cmd);
+ err = -ENOTTY;
+ }
+
+ AuTraceErr(err);
+ return err;
+}
+
+long aufs_ioctl_nondir(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ long err;
+
+ switch (cmd) {
+ case AUFS_CTL_MVDOWN:
+ err = au_mvdown(file->f_path.dentry, (void __user *)arg);
+ break;
+
+ case AUFS_CTL_WBR_FD:
+ err = au_wbr_fd(&file->f_path, (void __user *)arg);
+ break;
+
+ default:
+ /* do not call the lower */
+ AuDbg("0x%x\n", cmd);
+ err = -ENOTTY;
+ }
+
+ AuTraceErr(err);
+ return err;
+}
+
+#ifdef CONFIG_COMPAT
+long aufs_compat_ioctl_dir(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ long err;
+
+ switch (cmd) {
+ case AUFS_CTL_RDU:
+ case AUFS_CTL_RDU_INO:
+ err = au_rdu_compat_ioctl(file, cmd, arg);
+ break;
+
+ case AUFS_CTL_IBUSY:
+ err = au_ibusy_compat_ioctl(file, arg);
+ break;
+
+ case AUFS_CTL_BRINFO:
+ err = au_brinfo_compat_ioctl(file, arg);
+ break;
+
+ default:
+ err = aufs_ioctl_dir(file, cmd, arg);
+ }
+
+ AuTraceErr(err);
+ return err;
+}
+
+long aufs_compat_ioctl_nondir(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ return aufs_ioctl_nondir(file, cmd, (unsigned long)compat_ptr(arg));
+}
+#endif
diff --git a/fs/aufs/lcnt.h b/fs/aufs/lcnt.h
new file mode 100644
index 0000000000..d8508f875f
--- /dev/null
+++ b/fs/aufs/lcnt.h
@@ -0,0 +1,186 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * simple long counter wrapper
+ */
+
+#ifndef __AUFS_LCNT_H__
+#define __AUFS_LCNT_H__
+
+#ifdef __KERNEL__
+
+#include "debug.h"
+
+#define AuLCntATOMIC 1
+#define AuLCntPCPUCNT 2
+/*
+ * why does percpu_refcount require extra synchronize_rcu()s in
+ * au_br_do_free()
+ */
+#define AuLCntPCPUREF 3
+
+/* #define AuLCntChosen AuLCntATOMIC */
+#define AuLCntChosen AuLCntPCPUCNT
+/* #define AuLCntChosen AuLCntPCPUREF */
+
+#if AuLCntChosen == AuLCntATOMIC
+#include <linux/atomic.h>
+
+typedef atomic_long_t au_lcnt_t;
+
+static inline int au_lcnt_init(au_lcnt_t *cnt, void *release __maybe_unused)
+{
+ atomic_long_set(cnt, 0);
+ return 0;
+}
+
+static inline void au_lcnt_wait_for_fin(au_lcnt_t *cnt __maybe_unused)
+{
+ /* empty */
+}
+
+static inline void au_lcnt_fin(au_lcnt_t *cnt __maybe_unused,
+ int do_sync __maybe_unused)
+{
+ /* empty */
+}
+
+static inline void au_lcnt_inc(au_lcnt_t *cnt)
+{
+ atomic_long_inc(cnt);
+}
+
+static inline void au_lcnt_dec(au_lcnt_t *cnt)
+{
+ atomic_long_dec(cnt);
+}
+
+static inline long au_lcnt_read(au_lcnt_t *cnt, int do_rev __maybe_unused)
+{
+ return atomic_long_read(cnt);
+}
+#endif
+
+#if AuLCntChosen == AuLCntPCPUCNT
+#include <linux/percpu_counter.h>
+
+typedef struct percpu_counter au_lcnt_t;
+
+static inline int au_lcnt_init(au_lcnt_t *cnt, void *release __maybe_unused)
+{
+ return percpu_counter_init(cnt, 0, GFP_NOFS);
+}
+
+static inline void au_lcnt_wait_for_fin(au_lcnt_t *cnt __maybe_unused)
+{
+ /* empty */
+}
+
+static inline void au_lcnt_fin(au_lcnt_t *cnt, int do_sync __maybe_unused)
+{
+ percpu_counter_destroy(cnt);
+}
+
+static inline void au_lcnt_inc(au_lcnt_t *cnt)
+{
+ percpu_counter_inc(cnt);
+}
+
+static inline void au_lcnt_dec(au_lcnt_t *cnt)
+{
+ percpu_counter_dec(cnt);
+}
+
+static inline long au_lcnt_read(au_lcnt_t *cnt, int do_rev __maybe_unused)
+{
+ s64 n;
+
+ n = percpu_counter_sum(cnt);
+ BUG_ON(n < 0);
+ if (LONG_MAX != LLONG_MAX
+ && n > LONG_MAX)
+ AuWarn1("%s\n", "wrap-around");
+
+ return n;
+}
+#endif
+
+#if AuLCntChosen == AuLCntPCPUREF
+#include <linux/percpu-refcount.h>
+
+typedef struct percpu_ref au_lcnt_t;
+
+static inline int au_lcnt_init(au_lcnt_t *cnt, percpu_ref_func_t *release)
+{
+ if (!release)
+ release = percpu_ref_exit;
+ return percpu_ref_init(cnt, release, /*percpu mode*/0, GFP_NOFS);
+}
+
+static inline void au_lcnt_wait_for_fin(au_lcnt_t *cnt __maybe_unused)
+{
+ synchronize_rcu();
+}
+
+static inline void au_lcnt_fin(au_lcnt_t *cnt, int do_sync)
+{
+ percpu_ref_kill(cnt);
+ if (do_sync)
+ au_lcnt_wait_for_fin(cnt);
+}
+
+static inline void au_lcnt_inc(au_lcnt_t *cnt)
+{
+ percpu_ref_get(cnt);
+}
+
+static inline void au_lcnt_dec(au_lcnt_t *cnt)
+{
+ percpu_ref_put(cnt);
+}
+
+/*
+ * avoid calling this func as possible.
+ */
+static inline long au_lcnt_read(au_lcnt_t *cnt, int do_rev)
+{
+ long l;
+
+ percpu_ref_switch_to_atomic_sync(cnt);
+ l = atomic_long_read(&cnt->count);
+ if (do_rev)
+ percpu_ref_switch_to_percpu(cnt);
+
+ /* percpu_ref is initialized by 1 instead of 0 */
+ return l - 1;
+}
+#endif
+
+#ifdef CONFIG_AUFS_DEBUG
+#define AuLCntZero(val) do { \
+ long l = val; \
+ if (l) \
+ AuDbg("%s = %ld\n", #val, l); \
+} while (0)
+#else
+#define AuLCntZero(val) do {} while (0)
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_LCNT_H__ */
diff --git a/fs/aufs/loop.c b/fs/aufs/loop.c
new file mode 100644
index 0000000000..bfcb9f994c
--- /dev/null
+++ b/fs/aufs/loop.c
@@ -0,0 +1,148 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * support for loopback block device as a branch
+ */
+
+#include "aufs.h"
+
+/* added into drivers/block/loop.c */
+static struct file *(*backing_file_func)(struct super_block *sb);
+
+/*
+ * test if two lower dentries have overlapping branches.
+ */
+int au_test_loopback_overlap(struct super_block *sb, struct dentry *h_adding)
+{
+ struct super_block *h_sb;
+ struct file *backing_file;
+
+ if (unlikely(!backing_file_func)) {
+ /* don't load "loop" module here */
+ backing_file_func = symbol_get(loop_backing_file);
+ if (unlikely(!backing_file_func))
+ /* "loop" module is not loaded */
+ return 0;
+ }
+
+ h_sb = h_adding->d_sb;
+ backing_file = backing_file_func(h_sb);
+ if (!backing_file)
+ return 0;
+
+ h_adding = backing_file->f_path.dentry;
+ /*
+ * h_adding can be local NFS.
+ * in this case aufs cannot detect the loop.
+ */
+ if (unlikely(h_adding->d_sb == sb))
+ return 1;
+ return !!au_test_subdir(h_adding, sb->s_root);
+}
+
+/* true if a kernel thread named 'loop[0-9].*' accesses a file */
+int au_test_loopback_kthread(void)
+{
+ int ret;
+ struct task_struct *tsk = current;
+ char c, comm[sizeof(tsk->comm)];
+
+ ret = 0;
+ if (tsk->flags & PF_KTHREAD) {
+ get_task_comm(comm, tsk);
+ c = comm[4];
+ ret = ('0' <= c && c <= '9'
+ && !strncmp(comm, "loop", 4));
+ }
+
+ return ret;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#define au_warn_loopback_step 16
+static int au_warn_loopback_nelem = au_warn_loopback_step;
+static unsigned long *au_warn_loopback_array;
+
+void au_warn_loopback(struct super_block *h_sb)
+{
+ int i, new_nelem;
+ unsigned long *a, magic;
+ static DEFINE_SPINLOCK(spin);
+
+ magic = h_sb->s_magic;
+ spin_lock(&spin);
+ a = au_warn_loopback_array;
+ for (i = 0; i < au_warn_loopback_nelem && *a; i++)
+ if (a[i] == magic) {
+ spin_unlock(&spin);
+ return;
+ }
+
+ /* h_sb is new to us, print it */
+ if (i < au_warn_loopback_nelem) {
+ a[i] = magic;
+ goto pr;
+ }
+
+ /* expand the array */
+ new_nelem = au_warn_loopback_nelem + au_warn_loopback_step;
+ a = au_kzrealloc(au_warn_loopback_array,
+ au_warn_loopback_nelem * sizeof(unsigned long),
+ new_nelem * sizeof(unsigned long), GFP_ATOMIC,
+ /*may_shrink*/0);
+ if (a) {
+ au_warn_loopback_nelem = new_nelem;
+ au_warn_loopback_array = a;
+ a[i] = magic;
+ goto pr;
+ }
+
+ spin_unlock(&spin);
+ AuWarn1("realloc failed, ignored\n");
+ return;
+
+pr:
+ spin_unlock(&spin);
+ pr_warn("you may want to try another patch for loopback file "
+ "on %s(0x%lx) branch\n", au_sbtype(h_sb), magic);
+}
+
+int au_loopback_init(void)
+{
+ int err;
+ struct super_block *sb __maybe_unused;
+
+ BUILD_BUG_ON(sizeof(sb->s_magic) != sizeof(*au_warn_loopback_array));
+
+ err = 0;
+ au_warn_loopback_array = kcalloc(au_warn_loopback_step,
+ sizeof(unsigned long), GFP_NOFS);
+ if (unlikely(!au_warn_loopback_array))
+ err = -ENOMEM;
+
+ return err;
+}
+
+void au_loopback_fin(void)
+{
+ if (backing_file_func)
+ symbol_put(loop_backing_file);
+ au_kfree_try_rcu(au_warn_loopback_array);
+}
diff --git a/fs/aufs/loop.h b/fs/aufs/loop.h
new file mode 100644
index 0000000000..7fc394e72d
--- /dev/null
+++ b/fs/aufs/loop.h
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * support for loopback mount as a branch
+ */
+
+#ifndef __AUFS_LOOP_H__
+#define __AUFS_LOOP_H__
+
+#ifdef __KERNEL__
+
+struct dentry;
+struct super_block;
+
+#ifdef CONFIG_AUFS_BDEV_LOOP
+/* drivers/block/loop.c */
+struct file *loop_backing_file(struct super_block *sb);
+
+/* loop.c */
+int au_test_loopback_overlap(struct super_block *sb, struct dentry *h_adding);
+int au_test_loopback_kthread(void);
+void au_warn_loopback(struct super_block *h_sb);
+
+int au_loopback_init(void);
+void au_loopback_fin(void);
+#else
+AuStub(struct file *, loop_backing_file, return NULL, struct super_block *sb)
+
+AuStubInt0(au_test_loopback_overlap, struct super_block *sb,
+ struct dentry *h_adding)
+AuStubInt0(au_test_loopback_kthread, void)
+AuStubVoid(au_warn_loopback, struct super_block *h_sb)
+
+AuStubInt0(au_loopback_init, void)
+AuStubVoid(au_loopback_fin, void)
+#endif /* BLK_DEV_LOOP */
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_LOOP_H__ */
diff --git a/fs/aufs/magic.mk b/fs/aufs/magic.mk
new file mode 100644
index 0000000000..7bc9eef3ff
--- /dev/null
+++ b/fs/aufs/magic.mk
@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: GPL-2.0
+
+# defined in ${srctree}/fs/fuse/inode.c
+# tristate
+ifdef CONFIG_FUSE_FS
+ccflags-y += -DFUSE_SUPER_MAGIC=0x65735546
+endif
+
+# defined in ${srctree}/fs/xfs/xfs_sb.h
+# tristate
+ifdef CONFIG_XFS_FS
+ccflags-y += -DXFS_SB_MAGIC=0x58465342
+endif
+
+# defined in ${srctree}/fs/configfs/mount.c
+# tristate
+ifdef CONFIG_CONFIGFS_FS
+ccflags-y += -DCONFIGFS_MAGIC=0x62656570
+endif
+
+# defined in ${srctree}/fs/ubifs/ubifs.h
+# tristate
+ifdef CONFIG_UBIFS_FS
+ccflags-y += -DUBIFS_SUPER_MAGIC=0x24051905
+endif
+
+# defined in ${srctree}/fs/hfsplus/hfsplus_raw.h
+# tristate
+ifdef CONFIG_HFSPLUS_FS
+ccflags-y += -DHFSPLUS_SUPER_MAGIC=0x482b
+endif
diff --git a/fs/aufs/module.c b/fs/aufs/module.c
new file mode 100644
index 0000000000..295736adfc
--- /dev/null
+++ b/fs/aufs/module.c
@@ -0,0 +1,273 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * module global variables and operations
+ */
+
+#include <linux/module.h>
+#include <linux/seq_file.h>
+#include "aufs.h"
+
+/* shrinkable realloc */
+void *au_krealloc(void *p, unsigned int new_sz, gfp_t gfp, int may_shrink)
+{
+ size_t sz;
+ int diff;
+
+ sz = 0;
+ diff = -1;
+ if (p) {
+#if 0 /* unused */
+ if (!new_sz) {
+ au_kfree_rcu(p);
+ p = NULL;
+ goto out;
+ }
+#else
+ AuDebugOn(!new_sz);
+#endif
+ sz = ksize(p);
+ diff = au_kmidx_sub(sz, new_sz);
+ }
+ if (sz && !diff)
+ goto out;
+
+ if (sz < new_sz)
+ /* expand or SLOB */
+ p = krealloc(p, new_sz, gfp);
+ else if (new_sz < sz && may_shrink) {
+ /* shrink */
+ void *q;
+
+ q = kmalloc(new_sz, gfp);
+ if (q) {
+ if (p) {
+ memcpy(q, p, new_sz);
+ au_kfree_try_rcu(p);
+ }
+ p = q;
+ } else
+ p = NULL;
+ }
+
+out:
+ return p;
+}
+
+void *au_kzrealloc(void *p, unsigned int nused, unsigned int new_sz, gfp_t gfp,
+ int may_shrink)
+{
+ p = au_krealloc(p, new_sz, gfp, may_shrink);
+ if (p && new_sz > nused)
+ memset(p + nused, 0, new_sz - nused);
+ return p;
+}
+
+/* ---------------------------------------------------------------------- */
+/*
+ * aufs caches
+ */
+struct kmem_cache *au_cache[AuCache_Last];
+
+static void au_cache_fin(void)
+{
+ int i;
+
+ /*
+ * Make sure all delayed rcu free inodes are flushed before we
+ * destroy cache.
+ */
+ rcu_barrier();
+
+ /* excluding AuCache_HNOTIFY */
+ BUILD_BUG_ON(AuCache_HNOTIFY + 1 != AuCache_Last);
+ for (i = 0; i < AuCache_HNOTIFY; i++) {
+ kmem_cache_destroy(au_cache[i]);
+ au_cache[i] = NULL;
+ }
+}
+
+static int __init au_cache_init(void)
+{
+ au_cache[AuCache_DINFO] = AuCacheCtor(au_dinfo, au_di_init_once);
+ if (au_cache[AuCache_DINFO])
+ /* SLAB_DESTROY_BY_RCU */
+ au_cache[AuCache_ICNTNR] = AuCacheCtor(au_icntnr,
+ au_icntnr_init_once);
+ if (au_cache[AuCache_ICNTNR])
+ au_cache[AuCache_FINFO] = AuCacheCtor(au_finfo,
+ au_fi_init_once);
+ if (au_cache[AuCache_FINFO])
+ au_cache[AuCache_VDIR] = AuCache(au_vdir);
+ if (au_cache[AuCache_VDIR])
+ au_cache[AuCache_DEHSTR] = AuCache(au_vdir_dehstr);
+ if (au_cache[AuCache_DEHSTR])
+ return 0;
+
+ au_cache_fin();
+ return -ENOMEM;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_dir_roflags;
+
+#ifdef CONFIG_AUFS_SBILIST
+/*
+ * iterate_supers_type() doesn't protect us from
+ * remounting (branch management)
+ */
+struct hlist_bl_head au_sbilist;
+#endif
+
+/*
+ * functions for module interface.
+ */
+MODULE_LICENSE("GPL");
+/* MODULE_LICENSE("GPL v2"); */
+MODULE_AUTHOR("Junjiro R. Okajima <aufs-users@lists.sourceforge.net>");
+MODULE_DESCRIPTION(AUFS_NAME
+ " -- Advanced multi layered unification filesystem");
+MODULE_VERSION(AUFS_VERSION);
+MODULE_ALIAS_FS(AUFS_NAME);
+
+/* this module parameter has no meaning when SYSFS is disabled */
+int sysaufs_brs = 1;
+MODULE_PARM_DESC(brs, "use <sysfs>/fs/aufs/si_*/brN");
+module_param_named(brs, sysaufs_brs, int, 0444);
+
+/* this module parameter has no meaning when USER_NS is disabled */
+bool au_userns;
+MODULE_PARM_DESC(allow_userns, "allow unprivileged to mount under userns");
+module_param_named(allow_userns, au_userns, bool, 0444);
+
+/* ---------------------------------------------------------------------- */
+
+static char au_esc_chars[0x20 + 3]; /* 0x01-0x20, backslash, del, and NULL */
+
+int au_seq_path(struct seq_file *seq, struct path *path)
+{
+ int err;
+
+ err = seq_path(seq, path, au_esc_chars);
+ if (err >= 0)
+ err = 0;
+ else
+ err = -ENOMEM;
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int __init aufs_init(void)
+{
+ int err, i;
+ char *p;
+
+ p = au_esc_chars;
+ for (i = 1; i <= ' '; i++)
+ *p++ = i;
+ *p++ = '\\';
+ *p++ = '\x7f';
+ *p = 0;
+
+ au_dir_roflags = au_file_roflags(O_DIRECTORY | O_LARGEFILE);
+
+ memcpy(aufs_iop_nogetattr, aufs_iop, sizeof(aufs_iop));
+ for (i = 0; i < AuIop_Last; i++)
+ aufs_iop_nogetattr[i].getattr = NULL;
+
+ memset(au_cache, 0, sizeof(au_cache)); /* including hnotify */
+
+ au_sbilist_init();
+ sysaufs_brs_init();
+ au_debug_init();
+ au_dy_init();
+ err = sysaufs_init();
+ if (unlikely(err))
+ goto out;
+ err = dbgaufs_init();
+ if (unlikely(err))
+ goto out_sysaufs;
+ err = au_procfs_init();
+ if (unlikely(err))
+ goto out_dbgaufs;
+ err = au_wkq_init();
+ if (unlikely(err))
+ goto out_procfs;
+ err = au_loopback_init();
+ if (unlikely(err))
+ goto out_wkq;
+ err = au_hnotify_init();
+ if (unlikely(err))
+ goto out_loopback;
+ err = au_sysrq_init();
+ if (unlikely(err))
+ goto out_hin;
+ err = au_cache_init();
+ if (unlikely(err))
+ goto out_sysrq;
+
+ aufs_fs_type.fs_flags |= au_userns ? FS_USERNS_MOUNT : 0;
+ err = register_filesystem(&aufs_fs_type);
+ if (unlikely(err))
+ goto out_cache;
+
+ /* since we define pr_fmt, call printk directly */
+ printk(KERN_INFO AUFS_NAME " " AUFS_VERSION "\n");
+ goto out; /* success */
+
+out_cache:
+ au_cache_fin();
+out_sysrq:
+ au_sysrq_fin();
+out_hin:
+ au_hnotify_fin();
+out_loopback:
+ au_loopback_fin();
+out_wkq:
+ au_wkq_fin();
+out_procfs:
+ au_procfs_fin();
+out_dbgaufs:
+ dbgaufs_fin();
+out_sysaufs:
+ sysaufs_fin();
+ au_dy_fin();
+out:
+ return err;
+}
+
+static void __exit aufs_exit(void)
+{
+ unregister_filesystem(&aufs_fs_type);
+ au_cache_fin();
+ au_sysrq_fin();
+ au_hnotify_fin();
+ au_loopback_fin();
+ au_wkq_fin();
+ au_procfs_fin();
+ dbgaufs_fin();
+ sysaufs_fin();
+ au_dy_fin();
+}
+
+module_init(aufs_init);
+module_exit(aufs_exit);
diff --git a/fs/aufs/module.h b/fs/aufs/module.h
new file mode 100644
index 0000000000..3036754b90
--- /dev/null
+++ b/fs/aufs/module.h
@@ -0,0 +1,166 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * module initialization and module-global
+ */
+
+#ifndef __AUFS_MODULE_H__
+#define __AUFS_MODULE_H__
+
+#ifdef __KERNEL__
+
+#include <linux/slab.h>
+#include "debug.h"
+#include "dentry.h"
+#include "dir.h"
+#include "file.h"
+#include "inode.h"
+
+struct path;
+struct seq_file;
+
+/* module parameters */
+extern int sysaufs_brs;
+extern bool au_userns;
+
+/* ---------------------------------------------------------------------- */
+
+extern int au_dir_roflags;
+
+void *au_krealloc(void *p, unsigned int new_sz, gfp_t gfp, int may_shrink);
+void *au_kzrealloc(void *p, unsigned int nused, unsigned int new_sz, gfp_t gfp,
+ int may_shrink);
+
+/*
+ * Comparing the size of the object with sizeof(struct rcu_head)
+ * case 1: object is always larger
+ * --> au_kfree_rcu() or au_kfree_do_rcu()
+ * case 2: object is always smaller
+ * --> au_kfree_small()
+ * case 3: object can be any size
+ * --> au_kfree_try_rcu()
+ */
+
+static inline void au_kfree_do_rcu(const void *p)
+{
+ struct {
+ struct rcu_head rcu;
+ } *a = (void *)p;
+
+ kfree_rcu(a, rcu);
+}
+
+#define au_kfree_rcu(_p) do { \
+ typeof(_p) p = (_p); \
+ BUILD_BUG_ON(sizeof(*p) < sizeof(struct rcu_head)); \
+ if (p) \
+ au_kfree_do_rcu(p); \
+ } while (0)
+
+#define au_kfree_do_sz_test(sz) (sz >= sizeof(struct rcu_head))
+#define au_kfree_sz_test(p) (p && au_kfree_do_sz_test(ksize(p)))
+
+static inline void au_kfree_try_rcu(const void *p)
+{
+ if (!p)
+ return;
+ if (au_kfree_sz_test(p))
+ au_kfree_do_rcu(p);
+ else
+ kfree(p);
+}
+
+static inline void au_kfree_small(const void *p)
+{
+ if (!p)
+ return;
+ AuDebugOn(au_kfree_sz_test(p));
+ kfree(p);
+}
+
+static inline int au_kmidx_sub(size_t sz, size_t new_sz)
+{
+#ifndef CONFIG_SLOB
+ return kmalloc_index(sz) - kmalloc_index(new_sz);
+#else
+ return -1; /* SLOB is untested */
+#endif
+}
+
+int au_seq_path(struct seq_file *seq, struct path *path);
+
+#ifdef CONFIG_PROC_FS
+/* procfs.c */
+int __init au_procfs_init(void);
+void au_procfs_fin(void);
+#else
+AuStubInt0(au_procfs_init, void);
+AuStubVoid(au_procfs_fin, void);
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+/* kmem cache */
+enum {
+ AuCache_DINFO,
+ AuCache_ICNTNR,
+ AuCache_FINFO,
+ AuCache_VDIR,
+ AuCache_DEHSTR,
+ AuCache_HNOTIFY, /* must be last */
+ AuCache_Last
+};
+
+extern struct kmem_cache *au_cache[AuCache_Last];
+
+#define AuCacheFlags (SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD)
+#define AuCache(type) KMEM_CACHE(type, AuCacheFlags)
+#define AuCacheCtor(type, ctor) \
+ kmem_cache_create(#type, sizeof(struct type), \
+ __alignof__(struct type), AuCacheFlags, ctor)
+
+#define AuCacheFuncs(name, index) \
+ static inline struct au_##name *au_cache_alloc_##name(void) \
+ { return kmem_cache_alloc(au_cache[AuCache_##index], GFP_NOFS); } \
+ static inline void au_cache_free_##name##_norcu(struct au_##name *p) \
+ { kmem_cache_free(au_cache[AuCache_##index], p); } \
+ \
+ static inline void au_cache_free_##name##_rcu_cb(struct rcu_head *rcu) \
+ { void *p = rcu; \
+ p -= offsetof(struct au_##name, rcu); \
+ kmem_cache_free(au_cache[AuCache_##index], p); } \
+ static inline void au_cache_free_##name##_rcu(struct au_##name *p) \
+ { BUILD_BUG_ON(sizeof(struct au_##name) < sizeof(struct rcu_head)); \
+ call_rcu(&p->rcu, au_cache_free_##name##_rcu_cb); } \
+ \
+ static inline void au_cache_free_##name(struct au_##name *p) \
+ { /* au_cache_free_##name##_norcu(p); */ \
+ au_cache_free_##name##_rcu(p); }
+
+AuCacheFuncs(dinfo, DINFO);
+AuCacheFuncs(icntnr, ICNTNR);
+AuCacheFuncs(finfo, FINFO);
+AuCacheFuncs(vdir, VDIR);
+AuCacheFuncs(vdir_dehstr, DEHSTR);
+#ifdef CONFIG_AUFS_HNOTIFY
+AuCacheFuncs(hnotify, HNOTIFY);
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_MODULE_H__ */
diff --git a/fs/aufs/mvdown.c b/fs/aufs/mvdown.c
new file mode 100644
index 0000000000..cbac849ead
--- /dev/null
+++ b/fs/aufs/mvdown.c
@@ -0,0 +1,706 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2011-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * move-down, opposite of copy-up
+ */
+
+#include "aufs.h"
+
+struct au_mvd_args {
+ struct {
+ struct super_block *h_sb;
+ struct dentry *h_parent;
+ struct au_hinode *hdir;
+ struct inode *h_dir, *h_inode;
+ struct au_pin pin;
+ } info[AUFS_MVDOWN_NARRAY];
+
+ struct aufs_mvdown mvdown;
+ struct dentry *dentry, *parent;
+ struct inode *inode, *dir;
+ struct super_block *sb;
+ aufs_bindex_t bopq, bwh, bfound;
+ unsigned char rename_lock;
+};
+
+#define mvd_errno mvdown.au_errno
+#define mvd_bsrc mvdown.stbr[AUFS_MVDOWN_UPPER].bindex
+#define mvd_src_brid mvdown.stbr[AUFS_MVDOWN_UPPER].brid
+#define mvd_bdst mvdown.stbr[AUFS_MVDOWN_LOWER].bindex
+#define mvd_dst_brid mvdown.stbr[AUFS_MVDOWN_LOWER].brid
+
+#define mvd_h_src_sb info[AUFS_MVDOWN_UPPER].h_sb
+#define mvd_h_src_parent info[AUFS_MVDOWN_UPPER].h_parent
+#define mvd_hdir_src info[AUFS_MVDOWN_UPPER].hdir
+#define mvd_h_src_dir info[AUFS_MVDOWN_UPPER].h_dir
+#define mvd_h_src_inode info[AUFS_MVDOWN_UPPER].h_inode
+#define mvd_pin_src info[AUFS_MVDOWN_UPPER].pin
+
+#define mvd_h_dst_sb info[AUFS_MVDOWN_LOWER].h_sb
+#define mvd_h_dst_parent info[AUFS_MVDOWN_LOWER].h_parent
+#define mvd_hdir_dst info[AUFS_MVDOWN_LOWER].hdir
+#define mvd_h_dst_dir info[AUFS_MVDOWN_LOWER].h_dir
+#define mvd_h_dst_inode info[AUFS_MVDOWN_LOWER].h_inode
+#define mvd_pin_dst info[AUFS_MVDOWN_LOWER].pin
+
+#define AU_MVD_PR(flag, ...) do { \
+ if (flag) \
+ pr_err(__VA_ARGS__); \
+ } while (0)
+
+static int find_lower_writable(struct au_mvd_args *a)
+{
+ struct super_block *sb;
+ aufs_bindex_t bindex, bbot;
+ struct au_branch *br;
+
+ sb = a->sb;
+ bindex = a->mvd_bsrc;
+ bbot = au_sbbot(sb);
+ if (a->mvdown.flags & AUFS_MVDOWN_FHSM_LOWER)
+ for (bindex++; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ if (au_br_fhsm(br->br_perm)
+ && !sb_rdonly(au_br_sb(br)))
+ return bindex;
+ }
+ else if (!(a->mvdown.flags & AUFS_MVDOWN_ROLOWER))
+ for (bindex++; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ if (!au_br_rdonly(br))
+ return bindex;
+ }
+ else
+ for (bindex++; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ if (!sb_rdonly(au_br_sb(br))) {
+ if (au_br_rdonly(br))
+ a->mvdown.flags
+ |= AUFS_MVDOWN_ROLOWER_R;
+ return bindex;
+ }
+ }
+
+ return -1;
+}
+
+/* make the parent dir on bdst */
+static int au_do_mkdir(const unsigned char dmsg, struct au_mvd_args *a)
+{
+ int err;
+
+ err = 0;
+ a->mvd_hdir_src = au_hi(a->dir, a->mvd_bsrc);
+ a->mvd_hdir_dst = au_hi(a->dir, a->mvd_bdst);
+ a->mvd_h_src_parent = au_h_dptr(a->parent, a->mvd_bsrc);
+ a->mvd_h_dst_parent = NULL;
+ if (au_dbbot(a->parent) >= a->mvd_bdst)
+ a->mvd_h_dst_parent = au_h_dptr(a->parent, a->mvd_bdst);
+ if (!a->mvd_h_dst_parent) {
+ err = au_cpdown_dirs(a->dentry, a->mvd_bdst);
+ if (unlikely(err)) {
+ AU_MVD_PR(dmsg, "cpdown_dirs failed\n");
+ goto out;
+ }
+ a->mvd_h_dst_parent = au_h_dptr(a->parent, a->mvd_bdst);
+ }
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/* lock them all */
+static int au_do_lock(const unsigned char dmsg, struct au_mvd_args *a)
+{
+ int err;
+ struct dentry *h_trap;
+
+ a->mvd_h_src_sb = au_sbr_sb(a->sb, a->mvd_bsrc);
+ a->mvd_h_dst_sb = au_sbr_sb(a->sb, a->mvd_bdst);
+ err = au_pin(&a->mvd_pin_dst, a->dentry, a->mvd_bdst,
+ au_opt_udba(a->sb),
+ AuPin_MNT_WRITE | AuPin_DI_LOCKED);
+ AuTraceErr(err);
+ if (unlikely(err)) {
+ AU_MVD_PR(dmsg, "pin_dst failed\n");
+ goto out;
+ }
+
+ if (a->mvd_h_src_sb != a->mvd_h_dst_sb) {
+ a->rename_lock = 0;
+ au_pin_init(&a->mvd_pin_src, a->dentry, a->mvd_bsrc,
+ AuLsc_DI_PARENT, AuLsc_I_PARENT3,
+ au_opt_udba(a->sb),
+ AuPin_MNT_WRITE | AuPin_DI_LOCKED);
+ err = au_do_pin(&a->mvd_pin_src);
+ AuTraceErr(err);
+ a->mvd_h_src_dir = d_inode(a->mvd_h_src_parent);
+ if (unlikely(err)) {
+ AU_MVD_PR(dmsg, "pin_src failed\n");
+ goto out_dst;
+ }
+ goto out; /* success */
+ }
+
+ a->rename_lock = 1;
+ au_pin_hdir_unlock(&a->mvd_pin_dst);
+ err = au_pin(&a->mvd_pin_src, a->dentry, a->mvd_bsrc,
+ au_opt_udba(a->sb),
+ AuPin_MNT_WRITE | AuPin_DI_LOCKED);
+ AuTraceErr(err);
+ a->mvd_h_src_dir = d_inode(a->mvd_h_src_parent);
+ if (unlikely(err)) {
+ AU_MVD_PR(dmsg, "pin_src failed\n");
+ au_pin_hdir_lock(&a->mvd_pin_dst);
+ goto out_dst;
+ }
+ au_pin_hdir_unlock(&a->mvd_pin_src);
+ h_trap = vfsub_lock_rename(a->mvd_h_src_parent, a->mvd_hdir_src,
+ a->mvd_h_dst_parent, a->mvd_hdir_dst);
+ if (h_trap) {
+ err = (h_trap != a->mvd_h_src_parent);
+ if (err)
+ err = (h_trap != a->mvd_h_dst_parent);
+ }
+ BUG_ON(err); /* it should never happen */
+ if (unlikely(a->mvd_h_src_dir != au_pinned_h_dir(&a->mvd_pin_src))) {
+ err = -EBUSY;
+ AuTraceErr(err);
+ vfsub_unlock_rename(a->mvd_h_src_parent, a->mvd_hdir_src,
+ a->mvd_h_dst_parent, a->mvd_hdir_dst);
+ au_pin_hdir_lock(&a->mvd_pin_src);
+ au_unpin(&a->mvd_pin_src);
+ au_pin_hdir_lock(&a->mvd_pin_dst);
+ goto out_dst;
+ }
+ goto out; /* success */
+
+out_dst:
+ au_unpin(&a->mvd_pin_dst);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+static void au_do_unlock(const unsigned char dmsg, struct au_mvd_args *a)
+{
+ if (!a->rename_lock)
+ au_unpin(&a->mvd_pin_src);
+ else {
+ vfsub_unlock_rename(a->mvd_h_src_parent, a->mvd_hdir_src,
+ a->mvd_h_dst_parent, a->mvd_hdir_dst);
+ au_pin_hdir_lock(&a->mvd_pin_src);
+ au_unpin(&a->mvd_pin_src);
+ au_pin_hdir_lock(&a->mvd_pin_dst);
+ }
+ au_unpin(&a->mvd_pin_dst);
+}
+
+/* copy-down the file */
+static int au_do_cpdown(const unsigned char dmsg, struct au_mvd_args *a)
+{
+ int err;
+ struct au_cp_generic cpg = {
+ .dentry = a->dentry,
+ .bdst = a->mvd_bdst,
+ .bsrc = a->mvd_bsrc,
+ .len = -1,
+ .pin = &a->mvd_pin_dst,
+ .flags = AuCpup_DTIME | AuCpup_HOPEN
+ };
+
+ AuDbg("b%d, b%d\n", cpg.bsrc, cpg.bdst);
+ if (a->mvdown.flags & AUFS_MVDOWN_OWLOWER)
+ au_fset_cpup(cpg.flags, OVERWRITE);
+ if (a->mvdown.flags & AUFS_MVDOWN_ROLOWER)
+ au_fset_cpup(cpg.flags, RWDST);
+ err = au_sio_cpdown_simple(&cpg);
+ if (unlikely(err))
+ AU_MVD_PR(dmsg, "cpdown failed\n");
+
+ AuTraceErr(err);
+ return err;
+}
+
+/*
+ * unlink the whiteout on bdst if exist which may be created by UDBA while we
+ * were sleeping
+ */
+static int au_do_unlink_wh(const unsigned char dmsg, struct au_mvd_args *a)
+{
+ int err;
+ struct path h_path;
+ struct au_branch *br;
+ struct inode *delegated;
+
+ br = au_sbr(a->sb, a->mvd_bdst);
+ h_path.dentry = au_wh_lkup(a->mvd_h_dst_parent, &a->dentry->d_name, br);
+ err = PTR_ERR(h_path.dentry);
+ if (IS_ERR(h_path.dentry)) {
+ AU_MVD_PR(dmsg, "wh_lkup failed\n");
+ goto out;
+ }
+
+ err = 0;
+ if (d_is_positive(h_path.dentry)) {
+ h_path.mnt = au_br_mnt(br);
+ delegated = NULL;
+ err = vfsub_unlink(d_inode(a->mvd_h_dst_parent), &h_path,
+ &delegated, /*force*/0);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal unlink\n");
+ iput(delegated);
+ }
+ if (unlikely(err))
+ AU_MVD_PR(dmsg, "wh_unlink failed\n");
+ }
+ dput(h_path.dentry);
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/*
+ * unlink the topmost h_dentry
+ */
+static int au_do_unlink(const unsigned char dmsg, struct au_mvd_args *a)
+{
+ int err;
+ struct path h_path;
+ struct inode *delegated;
+
+ h_path.mnt = au_sbr_mnt(a->sb, a->mvd_bsrc);
+ h_path.dentry = au_h_dptr(a->dentry, a->mvd_bsrc);
+ delegated = NULL;
+ err = vfsub_unlink(a->mvd_h_src_dir, &h_path, &delegated, /*force*/0);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal unlink\n");
+ iput(delegated);
+ }
+ if (unlikely(err))
+ AU_MVD_PR(dmsg, "unlink failed\n");
+
+ AuTraceErr(err);
+ return err;
+}
+
+/* Since mvdown succeeded, we ignore an error of this function */
+static void au_do_stfs(const unsigned char dmsg, struct au_mvd_args *a)
+{
+ int err;
+ struct au_branch *br;
+
+ a->mvdown.flags |= AUFS_MVDOWN_STFS_FAILED;
+ br = au_sbr(a->sb, a->mvd_bsrc);
+ err = au_br_stfs(br, &a->mvdown.stbr[AUFS_MVDOWN_UPPER].stfs);
+ if (!err) {
+ br = au_sbr(a->sb, a->mvd_bdst);
+ a->mvdown.stbr[AUFS_MVDOWN_LOWER].brid = br->br_id;
+ err = au_br_stfs(br, &a->mvdown.stbr[AUFS_MVDOWN_LOWER].stfs);
+ }
+ if (!err)
+ a->mvdown.flags &= ~AUFS_MVDOWN_STFS_FAILED;
+ else
+ AU_MVD_PR(dmsg, "statfs failed (%d), ignored\n", err);
+}
+
+/*
+ * copy-down the file and unlink the bsrc file.
+ * - unlink the bdst whout if exist
+ * - copy-down the file (with whtmp name and rename)
+ * - unlink the bsrc file
+ */
+static int au_do_mvdown(const unsigned char dmsg, struct au_mvd_args *a)
+{
+ int err;
+
+ err = au_do_mkdir(dmsg, a);
+ if (!err)
+ err = au_do_lock(dmsg, a);
+ if (unlikely(err))
+ goto out;
+
+ /*
+ * do not revert the activities we made on bdst since they should be
+ * harmless in aufs.
+ */
+
+ err = au_do_cpdown(dmsg, a);
+ if (!err)
+ err = au_do_unlink_wh(dmsg, a);
+ if (!err && !(a->mvdown.flags & AUFS_MVDOWN_KUPPER))
+ err = au_do_unlink(dmsg, a);
+ if (unlikely(err))
+ goto out_unlock;
+
+ AuDbg("%pd2, 0x%x, %d --> %d\n",
+ a->dentry, a->mvdown.flags, a->mvd_bsrc, a->mvd_bdst);
+ if (find_lower_writable(a) < 0)
+ a->mvdown.flags |= AUFS_MVDOWN_BOTTOM;
+
+ if (a->mvdown.flags & AUFS_MVDOWN_STFS)
+ au_do_stfs(dmsg, a);
+
+ /* maintain internal array */
+ if (!(a->mvdown.flags & AUFS_MVDOWN_KUPPER)) {
+ au_set_h_dptr(a->dentry, a->mvd_bsrc, NULL);
+ au_set_dbtop(a->dentry, a->mvd_bdst);
+ au_set_h_iptr(a->inode, a->mvd_bsrc, NULL, /*flags*/0);
+ au_set_ibtop(a->inode, a->mvd_bdst);
+ } else {
+ /* hide the lower */
+ au_set_h_dptr(a->dentry, a->mvd_bdst, NULL);
+ au_set_dbbot(a->dentry, a->mvd_bsrc);
+ au_set_h_iptr(a->inode, a->mvd_bdst, NULL, /*flags*/0);
+ au_set_ibbot(a->inode, a->mvd_bsrc);
+ }
+ if (au_dbbot(a->dentry) < a->mvd_bdst)
+ au_set_dbbot(a->dentry, a->mvd_bdst);
+ if (au_ibbot(a->inode) < a->mvd_bdst)
+ au_set_ibbot(a->inode, a->mvd_bdst);
+
+out_unlock:
+ au_do_unlock(dmsg, a);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* make sure the file is idle */
+static int au_mvd_args_busy(const unsigned char dmsg, struct au_mvd_args *a)
+{
+ int err, plinked;
+
+ err = 0;
+ plinked = !!au_opt_test(au_mntflags(a->sb), PLINK);
+ if (au_dbtop(a->dentry) == a->mvd_bsrc
+ && au_dcount(a->dentry) == 1
+ && atomic_read(&a->inode->i_count) == 1
+ /* && a->mvd_h_src_inode->i_nlink == 1 */
+ && (!plinked || !au_plink_test(a->inode))
+ && a->inode->i_nlink == 1)
+ goto out;
+
+ err = -EBUSY;
+ AU_MVD_PR(dmsg,
+ "b%d, d{b%d, c%d?}, i{c%d?, l%u}, hi{l%u}, p{%d, %d}\n",
+ a->mvd_bsrc, au_dbtop(a->dentry), au_dcount(a->dentry),
+ atomic_read(&a->inode->i_count), a->inode->i_nlink,
+ a->mvd_h_src_inode->i_nlink,
+ plinked, plinked ? au_plink_test(a->inode) : 0);
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/* make sure the parent dir is fine */
+static int au_mvd_args_parent(const unsigned char dmsg,
+ struct au_mvd_args *a)
+{
+ int err;
+ aufs_bindex_t bindex;
+
+ err = 0;
+ if (unlikely(au_alive_dir(a->parent))) {
+ err = -ENOENT;
+ AU_MVD_PR(dmsg, "parent dir is dead\n");
+ goto out;
+ }
+
+ a->bopq = au_dbdiropq(a->parent);
+ bindex = au_wbr_nonopq(a->dentry, a->mvd_bdst);
+ AuDbg("b%d\n", bindex);
+ if (unlikely((bindex >= 0 && bindex < a->mvd_bdst)
+ || (a->bopq != -1 && a->bopq < a->mvd_bdst))) {
+ err = -EINVAL;
+ a->mvd_errno = EAU_MVDOWN_OPAQUE;
+ AU_MVD_PR(dmsg, "ancestor is opaque b%d, b%d\n",
+ a->bopq, a->mvd_bdst);
+ }
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+static int au_mvd_args_intermediate(const unsigned char dmsg,
+ struct au_mvd_args *a)
+{
+ int err;
+ struct au_dinfo *dinfo, *tmp;
+
+ /* lookup the next lower positive entry */
+ err = -ENOMEM;
+ tmp = au_di_alloc(a->sb, AuLsc_DI_TMP);
+ if (unlikely(!tmp))
+ goto out;
+
+ a->bfound = -1;
+ a->bwh = -1;
+ dinfo = au_di(a->dentry);
+ au_di_cp(tmp, dinfo);
+ au_di_swap(tmp, dinfo);
+
+ /* returns the number of positive dentries */
+ err = au_lkup_dentry(a->dentry, a->mvd_bsrc + 1,
+ /* AuLkup_IGNORE_PERM */ 0);
+ if (!err)
+ a->bwh = au_dbwh(a->dentry);
+ else if (err > 0)
+ a->bfound = au_dbtop(a->dentry);
+
+ au_di_swap(tmp, dinfo);
+ au_rw_write_unlock(&tmp->di_rwsem);
+ au_di_free(tmp);
+ if (unlikely(err < 0))
+ AU_MVD_PR(dmsg, "failed look-up lower\n");
+
+ /*
+ * here, we have these cases.
+ * bfound == -1
+ * no positive dentry under bsrc. there are more sub-cases.
+ * bwh < 0
+ * there no whiteout, we can safely move-down.
+ * bwh <= bsrc
+ * impossible
+ * bsrc < bwh && bwh < bdst
+ * there is a whiteout on RO branch. cannot proceed.
+ * bwh == bdst
+ * there is a whiteout on the RW target branch. it should
+ * be removed.
+ * bdst < bwh
+ * there is a whiteout somewhere unrelated branch.
+ * -1 < bfound && bfound <= bsrc
+ * impossible.
+ * bfound < bdst
+ * found, but it is on RO branch between bsrc and bdst. cannot
+ * proceed.
+ * bfound == bdst
+ * found, replace it if AUFS_MVDOWN_FORCE is set. otherwise return
+ * error.
+ * bdst < bfound
+ * found, after we create the file on bdst, it will be hidden.
+ */
+
+ AuDebugOn(a->bfound == -1
+ && a->bwh != -1
+ && a->bwh <= a->mvd_bsrc);
+ AuDebugOn(-1 < a->bfound
+ && a->bfound <= a->mvd_bsrc);
+
+ err = -EINVAL;
+ if (a->bfound == -1
+ && a->mvd_bsrc < a->bwh
+ && a->bwh != -1
+ && a->bwh < a->mvd_bdst) {
+ a->mvd_errno = EAU_MVDOWN_WHITEOUT;
+ AU_MVD_PR(dmsg, "bsrc %d, bdst %d, bfound %d, bwh %d\n",
+ a->mvd_bsrc, a->mvd_bdst, a->bfound, a->bwh);
+ goto out;
+ } else if (a->bfound != -1 && a->bfound < a->mvd_bdst) {
+ a->mvd_errno = EAU_MVDOWN_UPPER;
+ AU_MVD_PR(dmsg, "bdst %d, bfound %d\n",
+ a->mvd_bdst, a->bfound);
+ goto out;
+ }
+
+ err = 0; /* success */
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+static int au_mvd_args_exist(const unsigned char dmsg, struct au_mvd_args *a)
+{
+ int err;
+
+ err = 0;
+ if (!(a->mvdown.flags & AUFS_MVDOWN_OWLOWER)
+ && a->bfound == a->mvd_bdst)
+ err = -EEXIST;
+ AuTraceErr(err);
+ return err;
+}
+
+static int au_mvd_args(const unsigned char dmsg, struct au_mvd_args *a)
+{
+ int err;
+ struct au_branch *br;
+
+ err = -EISDIR;
+ if (unlikely(S_ISDIR(a->inode->i_mode)))
+ goto out;
+
+ err = -EINVAL;
+ if (!(a->mvdown.flags & AUFS_MVDOWN_BRID_UPPER))
+ a->mvd_bsrc = au_ibtop(a->inode);
+ else {
+ a->mvd_bsrc = au_br_index(a->sb, a->mvd_src_brid);
+ if (unlikely(a->mvd_bsrc < 0
+ || (a->mvd_bsrc < au_dbtop(a->dentry)
+ || au_dbbot(a->dentry) < a->mvd_bsrc
+ || !au_h_dptr(a->dentry, a->mvd_bsrc))
+ || (a->mvd_bsrc < au_ibtop(a->inode)
+ || au_ibbot(a->inode) < a->mvd_bsrc
+ || !au_h_iptr(a->inode, a->mvd_bsrc)))) {
+ a->mvd_errno = EAU_MVDOWN_NOUPPER;
+ AU_MVD_PR(dmsg, "no upper\n");
+ goto out;
+ }
+ }
+ if (unlikely(a->mvd_bsrc == au_sbbot(a->sb))) {
+ a->mvd_errno = EAU_MVDOWN_BOTTOM;
+ AU_MVD_PR(dmsg, "on the bottom\n");
+ goto out;
+ }
+ a->mvd_h_src_inode = au_h_iptr(a->inode, a->mvd_bsrc);
+ br = au_sbr(a->sb, a->mvd_bsrc);
+ err = au_br_rdonly(br);
+ if (!(a->mvdown.flags & AUFS_MVDOWN_ROUPPER)) {
+ if (unlikely(err))
+ goto out;
+ } else if (!(vfsub_native_ro(a->mvd_h_src_inode)
+ || IS_APPEND(a->mvd_h_src_inode))) {
+ if (err)
+ a->mvdown.flags |= AUFS_MVDOWN_ROUPPER_R;
+ /* go on */
+ } else
+ goto out;
+
+ err = -EINVAL;
+ if (!(a->mvdown.flags & AUFS_MVDOWN_BRID_LOWER)) {
+ a->mvd_bdst = find_lower_writable(a);
+ if (unlikely(a->mvd_bdst < 0)) {
+ a->mvd_errno = EAU_MVDOWN_BOTTOM;
+ AU_MVD_PR(dmsg, "no writable lower branch\n");
+ goto out;
+ }
+ } else {
+ a->mvd_bdst = au_br_index(a->sb, a->mvd_dst_brid);
+ if (unlikely(a->mvd_bdst < 0
+ || au_sbbot(a->sb) < a->mvd_bdst)) {
+ a->mvd_errno = EAU_MVDOWN_NOLOWERBR;
+ AU_MVD_PR(dmsg, "no lower brid\n");
+ goto out;
+ }
+ }
+
+ err = au_mvd_args_busy(dmsg, a);
+ if (!err)
+ err = au_mvd_args_parent(dmsg, a);
+ if (!err)
+ err = au_mvd_args_intermediate(dmsg, a);
+ if (!err)
+ err = au_mvd_args_exist(dmsg, a);
+ if (!err)
+ AuDbg("b%d, b%d\n", a->mvd_bsrc, a->mvd_bdst);
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+int au_mvdown(struct dentry *dentry, struct aufs_mvdown __user *uarg)
+{
+ int err, e;
+ unsigned char dmsg;
+ struct au_mvd_args *args;
+ struct inode *inode;
+
+ inode = d_inode(dentry);
+ err = -EPERM;
+ if (unlikely(!capable(CAP_SYS_ADMIN)))
+ goto out;
+
+ err = -ENOMEM;
+ args = kmalloc(sizeof(*args), GFP_NOFS);
+ if (unlikely(!args))
+ goto out;
+
+ err = copy_from_user(&args->mvdown, uarg, sizeof(args->mvdown));
+ if (!err)
+ /* VERIFY_WRITE */
+ err = !access_ok(uarg, sizeof(*uarg));
+ if (unlikely(err)) {
+ err = -EFAULT;
+ AuTraceErr(err);
+ goto out_free;
+ }
+ AuDbg("flags 0x%x\n", args->mvdown.flags);
+ args->mvdown.flags &= ~(AUFS_MVDOWN_ROLOWER_R | AUFS_MVDOWN_ROUPPER_R);
+ args->mvdown.au_errno = 0;
+ args->dentry = dentry;
+ args->inode = inode;
+ args->sb = dentry->d_sb;
+
+ err = -ENOENT;
+ dmsg = !!(args->mvdown.flags & AUFS_MVDOWN_DMSG);
+ args->parent = dget_parent(dentry);
+ args->dir = d_inode(args->parent);
+ inode_lock_nested(args->dir, I_MUTEX_PARENT);
+ dput(args->parent);
+ if (unlikely(args->parent != dentry->d_parent)) {
+ AU_MVD_PR(dmsg, "parent dir is moved\n");
+ goto out_dir;
+ }
+
+ inode_lock_nested(inode, I_MUTEX_CHILD);
+ err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_NOPLMW);
+ if (unlikely(err))
+ goto out_inode;
+
+ di_write_lock_parent(args->parent);
+ err = au_mvd_args(dmsg, args);
+ if (unlikely(err))
+ goto out_parent;
+
+ err = au_do_mvdown(dmsg, args);
+ if (unlikely(err))
+ goto out_parent;
+
+ au_cpup_attr_timesizes(args->dir);
+ au_cpup_attr_timesizes(inode);
+ if (!(args->mvdown.flags & AUFS_MVDOWN_KUPPER))
+ au_cpup_igen(inode, au_h_iptr(inode, args->mvd_bdst));
+ /* au_digen_dec(dentry); */
+
+out_parent:
+ di_write_unlock(args->parent);
+ aufs_read_unlock(dentry, AuLock_DW);
+out_inode:
+ inode_unlock(inode);
+out_dir:
+ inode_unlock(args->dir);
+out_free:
+ e = copy_to_user(uarg, &args->mvdown, sizeof(args->mvdown));
+ if (unlikely(e))
+ err = -EFAULT;
+ au_kfree_rcu(args);
+out:
+ AuTraceErr(err);
+ return err;
+}
diff --git a/fs/aufs/opts.c b/fs/aufs/opts.c
new file mode 100644
index 0000000000..77e17d7b3b
--- /dev/null
+++ b/fs/aufs/opts.c
@@ -0,0 +1,1880 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * mount options/flags
+ */
+
+#include <linux/namei.h>
+#include <linux/types.h> /* a distribution requires */
+#include <linux/parser.h>
+#include "aufs.h"
+
+/* ---------------------------------------------------------------------- */
+
+enum {
+ Opt_br,
+ Opt_add, Opt_del, Opt_mod, Opt_append, Opt_prepend,
+ Opt_idel, Opt_imod,
+ Opt_dirwh, Opt_rdcache, Opt_rdblk, Opt_rdhash,
+ Opt_rdblk_def, Opt_rdhash_def,
+ Opt_xino, Opt_noxino,
+ Opt_trunc_xino, Opt_trunc_xino_v, Opt_notrunc_xino,
+ Opt_trunc_xino_path, Opt_itrunc_xino,
+ Opt_trunc_xib, Opt_notrunc_xib,
+ Opt_shwh, Opt_noshwh,
+ Opt_plink, Opt_noplink, Opt_list_plink,
+ Opt_udba,
+ Opt_dio, Opt_nodio,
+ Opt_diropq_a, Opt_diropq_w,
+ Opt_warn_perm, Opt_nowarn_perm,
+ Opt_wbr_copyup, Opt_wbr_create,
+ Opt_fhsm_sec,
+ Opt_verbose, Opt_noverbose,
+ Opt_sum, Opt_nosum, Opt_wsum,
+ Opt_dirperm1, Opt_nodirperm1,
+ Opt_dirren, Opt_nodirren,
+ Opt_acl, Opt_noacl,
+ Opt_tail, Opt_ignore, Opt_ignore_silent, Opt_err
+};
+
+static match_table_t options = {
+ {Opt_br, "br=%s"},
+ {Opt_br, "br:%s"},
+
+ {Opt_add, "add=%d:%s"},
+ {Opt_add, "add:%d:%s"},
+ {Opt_add, "ins=%d:%s"},
+ {Opt_add, "ins:%d:%s"},
+ {Opt_append, "append=%s"},
+ {Opt_append, "append:%s"},
+ {Opt_prepend, "prepend=%s"},
+ {Opt_prepend, "prepend:%s"},
+
+ {Opt_del, "del=%s"},
+ {Opt_del, "del:%s"},
+ /* {Opt_idel, "idel:%d"}, */
+ {Opt_mod, "mod=%s"},
+ {Opt_mod, "mod:%s"},
+ /* {Opt_imod, "imod:%d:%s"}, */
+
+ {Opt_dirwh, "dirwh=%d"},
+
+ {Opt_xino, "xino=%s"},
+ {Opt_noxino, "noxino"},
+ {Opt_trunc_xino, "trunc_xino"},
+ {Opt_trunc_xino_v, "trunc_xino_v=%d:%d"},
+ {Opt_notrunc_xino, "notrunc_xino"},
+ {Opt_trunc_xino_path, "trunc_xino=%s"},
+ {Opt_itrunc_xino, "itrunc_xino=%d"},
+ /* {Opt_zxino, "zxino=%s"}, */
+ {Opt_trunc_xib, "trunc_xib"},
+ {Opt_notrunc_xib, "notrunc_xib"},
+
+#ifdef CONFIG_PROC_FS
+ {Opt_plink, "plink"},
+#else
+ {Opt_ignore_silent, "plink"},
+#endif
+
+ {Opt_noplink, "noplink"},
+
+#ifdef CONFIG_AUFS_DEBUG
+ {Opt_list_plink, "list_plink"},
+#endif
+
+ {Opt_udba, "udba=%s"},
+
+ {Opt_dio, "dio"},
+ {Opt_nodio, "nodio"},
+
+#ifdef CONFIG_AUFS_DIRREN
+ {Opt_dirren, "dirren"},
+ {Opt_nodirren, "nodirren"},
+#else
+ {Opt_ignore, "dirren"},
+ {Opt_ignore_silent, "nodirren"},
+#endif
+
+#ifdef CONFIG_AUFS_FHSM
+ {Opt_fhsm_sec, "fhsm_sec=%d"},
+#else
+ {Opt_ignore, "fhsm_sec=%d"},
+#endif
+
+ {Opt_diropq_a, "diropq=always"},
+ {Opt_diropq_a, "diropq=a"},
+ {Opt_diropq_w, "diropq=whiteouted"},
+ {Opt_diropq_w, "diropq=w"},
+
+ {Opt_warn_perm, "warn_perm"},
+ {Opt_nowarn_perm, "nowarn_perm"},
+
+ /* keep them temporary */
+ {Opt_ignore_silent, "nodlgt"},
+ {Opt_ignore, "clean_plink"},
+
+#ifdef CONFIG_AUFS_SHWH
+ {Opt_shwh, "shwh"},
+#endif
+ {Opt_noshwh, "noshwh"},
+
+ {Opt_dirperm1, "dirperm1"},
+ {Opt_nodirperm1, "nodirperm1"},
+
+ {Opt_verbose, "verbose"},
+ {Opt_verbose, "v"},
+ {Opt_noverbose, "noverbose"},
+ {Opt_noverbose, "quiet"},
+ {Opt_noverbose, "q"},
+ {Opt_noverbose, "silent"},
+
+ {Opt_sum, "sum"},
+ {Opt_nosum, "nosum"},
+ {Opt_wsum, "wsum"},
+
+ {Opt_rdcache, "rdcache=%d"},
+ {Opt_rdblk, "rdblk=%d"},
+ {Opt_rdblk_def, "rdblk=def"},
+ {Opt_rdhash, "rdhash=%d"},
+ {Opt_rdhash_def, "rdhash=def"},
+
+ {Opt_wbr_create, "create=%s"},
+ {Opt_wbr_create, "create_policy=%s"},
+ {Opt_wbr_copyup, "cpup=%s"},
+ {Opt_wbr_copyup, "copyup=%s"},
+ {Opt_wbr_copyup, "copyup_policy=%s"},
+
+ /* generic VFS flag */
+#ifdef CONFIG_FS_POSIX_ACL
+ {Opt_acl, "acl"},
+ {Opt_noacl, "noacl"},
+#else
+ {Opt_ignore, "acl"},
+ {Opt_ignore_silent, "noacl"},
+#endif
+
+ /* internal use for the scripts */
+ {Opt_ignore_silent, "si=%s"},
+
+ {Opt_br, "dirs=%s"},
+ {Opt_ignore, "debug=%d"},
+ {Opt_ignore, "delete=whiteout"},
+ {Opt_ignore, "delete=all"},
+ {Opt_ignore, "imap=%s"},
+
+ /* temporary workaround, due to old mount(8)? */
+ {Opt_ignore_silent, "relatime"},
+
+ {Opt_err, NULL}
+};
+
+/* ---------------------------------------------------------------------- */
+
+static const char *au_parser_pattern(int val, match_table_t tbl)
+{
+ struct match_token *p;
+
+ p = tbl;
+ while (p->pattern) {
+ if (p->token == val)
+ return p->pattern;
+ p++;
+ }
+ BUG();
+ return "??";
+}
+
+static const char *au_optstr(int *val, match_table_t tbl)
+{
+ struct match_token *p;
+ int v;
+
+ v = *val;
+ if (!v)
+ goto out;
+ p = tbl;
+ while (p->pattern) {
+ if (p->token
+ && (v & p->token) == p->token) {
+ *val &= ~p->token;
+ return p->pattern;
+ }
+ p++;
+ }
+
+out:
+ return NULL;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static match_table_t brperm = {
+ {AuBrPerm_RO, AUFS_BRPERM_RO},
+ {AuBrPerm_RR, AUFS_BRPERM_RR},
+ {AuBrPerm_RW, AUFS_BRPERM_RW},
+ {0, NULL}
+};
+
+static match_table_t brattr = {
+ /* general */
+ {AuBrAttr_COO_REG, AUFS_BRATTR_COO_REG},
+ {AuBrAttr_COO_ALL, AUFS_BRATTR_COO_ALL},
+ /* 'unpin' attrib is meaningless since linux-3.18-rc1 */
+ {AuBrAttr_UNPIN, AUFS_BRATTR_UNPIN},
+#ifdef CONFIG_AUFS_FHSM
+ {AuBrAttr_FHSM, AUFS_BRATTR_FHSM},
+#endif
+#ifdef CONFIG_AUFS_XATTR
+ {AuBrAttr_ICEX, AUFS_BRATTR_ICEX},
+ {AuBrAttr_ICEX_SEC, AUFS_BRATTR_ICEX_SEC},
+ {AuBrAttr_ICEX_SYS, AUFS_BRATTR_ICEX_SYS},
+ {AuBrAttr_ICEX_TR, AUFS_BRATTR_ICEX_TR},
+ {AuBrAttr_ICEX_USR, AUFS_BRATTR_ICEX_USR},
+ {AuBrAttr_ICEX_OTH, AUFS_BRATTR_ICEX_OTH},
+#endif
+
+ /* ro/rr branch */
+ {AuBrRAttr_WH, AUFS_BRRATTR_WH},
+
+ /* rw branch */
+ {AuBrWAttr_MOO, AUFS_BRWATTR_MOO},
+ {AuBrWAttr_NoLinkWH, AUFS_BRWATTR_NLWH},
+
+ {0, NULL}
+};
+
+static int br_attr_val(char *str, match_table_t table, substring_t args[])
+{
+ int attr, v;
+ char *p;
+
+ attr = 0;
+ do {
+ p = strchr(str, '+');
+ if (p)
+ *p = 0;
+ v = match_token(str, table, args);
+ if (v) {
+ if (v & AuBrAttr_CMOO_Mask)
+ attr &= ~AuBrAttr_CMOO_Mask;
+ attr |= v;
+ } else {
+ if (p)
+ *p = '+';
+ pr_warn("ignored branch attribute %s\n", str);
+ break;
+ }
+ if (p)
+ str = p + 1;
+ } while (p);
+
+ return attr;
+}
+
+static int au_do_optstr_br_attr(au_br_perm_str_t *str, int perm)
+{
+ int sz;
+ const char *p;
+ char *q;
+
+ q = str->a;
+ *q = 0;
+ p = au_optstr(&perm, brattr);
+ if (p) {
+ sz = strlen(p);
+ memcpy(q, p, sz + 1);
+ q += sz;
+ } else
+ goto out;
+
+ do {
+ p = au_optstr(&perm, brattr);
+ if (p) {
+ *q++ = '+';
+ sz = strlen(p);
+ memcpy(q, p, sz + 1);
+ q += sz;
+ }
+ } while (p);
+
+out:
+ return q - str->a;
+}
+
+static int noinline_for_stack br_perm_val(char *perm)
+{
+ int val, bad, sz;
+ char *p;
+ substring_t args[MAX_OPT_ARGS];
+ au_br_perm_str_t attr;
+
+ p = strchr(perm, '+');
+ if (p)
+ *p = 0;
+ val = match_token(perm, brperm, args);
+ if (!val) {
+ if (p)
+ *p = '+';
+ pr_warn("ignored branch permission %s\n", perm);
+ val = AuBrPerm_RO;
+ goto out;
+ }
+ if (!p)
+ goto out;
+
+ val |= br_attr_val(p + 1, brattr, args);
+
+ bad = 0;
+ switch (val & AuBrPerm_Mask) {
+ case AuBrPerm_RO:
+ case AuBrPerm_RR:
+ bad = val & AuBrWAttr_Mask;
+ val &= ~AuBrWAttr_Mask;
+ break;
+ case AuBrPerm_RW:
+ bad = val & AuBrRAttr_Mask;
+ val &= ~AuBrRAttr_Mask;
+ break;
+ }
+
+ /*
+ * 'unpin' attrib becomes meaningless since linux-3.18-rc1, but aufs
+ * does not treat it as an error, just warning.
+ * this is a tiny guard for the user operation.
+ */
+ if (val & AuBrAttr_UNPIN) {
+ bad |= AuBrAttr_UNPIN;
+ val &= ~AuBrAttr_UNPIN;
+ }
+
+ if (unlikely(bad)) {
+ sz = au_do_optstr_br_attr(&attr, bad);
+ AuDebugOn(!sz);
+ pr_warn("ignored branch attribute %s\n", attr.a);
+ }
+
+out:
+ return val;
+}
+
+void au_optstr_br_perm(au_br_perm_str_t *str, int perm)
+{
+ au_br_perm_str_t attr;
+ const char *p;
+ char *q;
+ int sz;
+
+ q = str->a;
+ p = au_optstr(&perm, brperm);
+ AuDebugOn(!p || !*p);
+ sz = strlen(p);
+ memcpy(q, p, sz + 1);
+ q += sz;
+
+ sz = au_do_optstr_br_attr(&attr, perm);
+ if (sz) {
+ *q++ = '+';
+ memcpy(q, attr.a, sz + 1);
+ }
+
+ AuDebugOn(strlen(str->a) >= sizeof(str->a));
+}
+
+/* ---------------------------------------------------------------------- */
+
+static match_table_t udbalevel = {
+ {AuOpt_UDBA_REVAL, "reval"},
+ {AuOpt_UDBA_NONE, "none"},
+#ifdef CONFIG_AUFS_HNOTIFY
+ {AuOpt_UDBA_HNOTIFY, "notify"}, /* abstraction */
+#ifdef CONFIG_AUFS_HFSNOTIFY
+ {AuOpt_UDBA_HNOTIFY, "fsnotify"},
+#endif
+#endif
+ {-1, NULL}
+};
+
+static int noinline_for_stack udba_val(char *str)
+{
+ substring_t args[MAX_OPT_ARGS];
+
+ return match_token(str, udbalevel, args);
+}
+
+const char *au_optstr_udba(int udba)
+{
+ return au_parser_pattern(udba, udbalevel);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static match_table_t au_wbr_create_policy = {
+ {AuWbrCreate_TDP, "tdp"},
+ {AuWbrCreate_TDP, "top-down-parent"},
+ {AuWbrCreate_RR, "rr"},
+ {AuWbrCreate_RR, "round-robin"},
+ {AuWbrCreate_MFS, "mfs"},
+ {AuWbrCreate_MFS, "most-free-space"},
+ {AuWbrCreate_MFSV, "mfs:%d"},
+ {AuWbrCreate_MFSV, "most-free-space:%d"},
+
+ /* top-down regardless the parent, and then mfs */
+ {AuWbrCreate_TDMFS, "tdmfs:%d"},
+ {AuWbrCreate_TDMFSV, "tdmfs:%d:%d"},
+
+ {AuWbrCreate_MFSRR, "mfsrr:%d"},
+ {AuWbrCreate_MFSRRV, "mfsrr:%d:%d"},
+ {AuWbrCreate_PMFS, "pmfs"},
+ {AuWbrCreate_PMFSV, "pmfs:%d"},
+ {AuWbrCreate_PMFSRR, "pmfsrr:%d"},
+ {AuWbrCreate_PMFSRRV, "pmfsrr:%d:%d"},
+
+ {-1, NULL}
+};
+
+static int au_wbr_mfs_wmark(substring_t *arg, char *str,
+ struct au_opt_wbr_create *create)
+{
+ int err;
+ unsigned long long ull;
+
+ err = 0;
+ if (!match_u64(arg, &ull))
+ create->mfsrr_watermark = ull;
+ else {
+ pr_err("bad integer in %s\n", str);
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
+static int au_wbr_mfs_sec(substring_t *arg, char *str,
+ struct au_opt_wbr_create *create)
+{
+ int n, err;
+
+ err = 0;
+ if (!match_int(arg, &n) && 0 <= n && n <= AUFS_MFS_MAX_SEC)
+ create->mfs_second = n;
+ else {
+ pr_err("bad integer in %s\n", str);
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
+static int noinline_for_stack
+au_wbr_create_val(char *str, struct au_opt_wbr_create *create)
+{
+ int err, e;
+ substring_t args[MAX_OPT_ARGS];
+
+ err = match_token(str, au_wbr_create_policy, args);
+ create->wbr_create = err;
+ switch (err) {
+ case AuWbrCreate_MFSRRV:
+ case AuWbrCreate_TDMFSV:
+ case AuWbrCreate_PMFSRRV:
+ e = au_wbr_mfs_wmark(&args[0], str, create);
+ if (!e)
+ e = au_wbr_mfs_sec(&args[1], str, create);
+ if (unlikely(e))
+ err = e;
+ break;
+ case AuWbrCreate_MFSRR:
+ case AuWbrCreate_TDMFS:
+ case AuWbrCreate_PMFSRR:
+ e = au_wbr_mfs_wmark(&args[0], str, create);
+ if (unlikely(e)) {
+ err = e;
+ break;
+ }
+ /*FALLTHROUGH*/
+ case AuWbrCreate_MFS:
+ case AuWbrCreate_PMFS:
+ create->mfs_second = AUFS_MFS_DEF_SEC;
+ break;
+ case AuWbrCreate_MFSV:
+ case AuWbrCreate_PMFSV:
+ e = au_wbr_mfs_sec(&args[0], str, create);
+ if (unlikely(e))
+ err = e;
+ break;
+ }
+
+ return err;
+}
+
+const char *au_optstr_wbr_create(int wbr_create)
+{
+ return au_parser_pattern(wbr_create, au_wbr_create_policy);
+}
+
+static match_table_t au_wbr_copyup_policy = {
+ {AuWbrCopyup_TDP, "tdp"},
+ {AuWbrCopyup_TDP, "top-down-parent"},
+ {AuWbrCopyup_BUP, "bup"},
+ {AuWbrCopyup_BUP, "bottom-up-parent"},
+ {AuWbrCopyup_BU, "bu"},
+ {AuWbrCopyup_BU, "bottom-up"},
+ {-1, NULL}
+};
+
+static int noinline_for_stack au_wbr_copyup_val(char *str)
+{
+ substring_t args[MAX_OPT_ARGS];
+
+ return match_token(str, au_wbr_copyup_policy, args);
+}
+
+const char *au_optstr_wbr_copyup(int wbr_copyup)
+{
+ return au_parser_pattern(wbr_copyup, au_wbr_copyup_policy);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static const int lkup_dirflags = LOOKUP_FOLLOW | LOOKUP_DIRECTORY;
+
+static void dump_opts(struct au_opts *opts)
+{
+#ifdef CONFIG_AUFS_DEBUG
+ /* reduce stack space */
+ union {
+ struct au_opt_add *add;
+ struct au_opt_del *del;
+ struct au_opt_mod *mod;
+ struct au_opt_xino *xino;
+ struct au_opt_xino_itrunc *xino_itrunc;
+ struct au_opt_wbr_create *create;
+ } u;
+ struct au_opt *opt;
+
+ opt = opts->opt;
+ while (opt->type != Opt_tail) {
+ switch (opt->type) {
+ case Opt_add:
+ u.add = &opt->add;
+ AuDbg("add {b%d, %s, 0x%x, %p}\n",
+ u.add->bindex, u.add->pathname, u.add->perm,
+ u.add->path.dentry);
+ break;
+ case Opt_del:
+ case Opt_idel:
+ u.del = &opt->del;
+ AuDbg("del {%s, %p}\n",
+ u.del->pathname, u.del->h_path.dentry);
+ break;
+ case Opt_mod:
+ case Opt_imod:
+ u.mod = &opt->mod;
+ AuDbg("mod {%s, 0x%x, %p}\n",
+ u.mod->path, u.mod->perm, u.mod->h_root);
+ break;
+ case Opt_append:
+ u.add = &opt->add;
+ AuDbg("append {b%d, %s, 0x%x, %p}\n",
+ u.add->bindex, u.add->pathname, u.add->perm,
+ u.add->path.dentry);
+ break;
+ case Opt_prepend:
+ u.add = &opt->add;
+ AuDbg("prepend {b%d, %s, 0x%x, %p}\n",
+ u.add->bindex, u.add->pathname, u.add->perm,
+ u.add->path.dentry);
+ break;
+ case Opt_dirwh:
+ AuDbg("dirwh %d\n", opt->dirwh);
+ break;
+ case Opt_rdcache:
+ AuDbg("rdcache %d\n", opt->rdcache);
+ break;
+ case Opt_rdblk:
+ AuDbg("rdblk %u\n", opt->rdblk);
+ break;
+ case Opt_rdblk_def:
+ AuDbg("rdblk_def\n");
+ break;
+ case Opt_rdhash:
+ AuDbg("rdhash %u\n", opt->rdhash);
+ break;
+ case Opt_rdhash_def:
+ AuDbg("rdhash_def\n");
+ break;
+ case Opt_xino:
+ u.xino = &opt->xino;
+ AuDbg("xino {%s %pD}\n", u.xino->path, u.xino->file);
+ break;
+ case Opt_trunc_xino:
+ AuLabel(trunc_xino);
+ break;
+ case Opt_notrunc_xino:
+ AuLabel(notrunc_xino);
+ break;
+ case Opt_trunc_xino_path:
+ case Opt_itrunc_xino:
+ u.xino_itrunc = &opt->xino_itrunc;
+ AuDbg("trunc_xino %d\n", u.xino_itrunc->bindex);
+ break;
+ case Opt_noxino:
+ AuLabel(noxino);
+ break;
+ case Opt_trunc_xib:
+ AuLabel(trunc_xib);
+ break;
+ case Opt_notrunc_xib:
+ AuLabel(notrunc_xib);
+ break;
+ case Opt_shwh:
+ AuLabel(shwh);
+ break;
+ case Opt_noshwh:
+ AuLabel(noshwh);
+ break;
+ case Opt_dirperm1:
+ AuLabel(dirperm1);
+ break;
+ case Opt_nodirperm1:
+ AuLabel(nodirperm1);
+ break;
+ case Opt_plink:
+ AuLabel(plink);
+ break;
+ case Opt_noplink:
+ AuLabel(noplink);
+ break;
+ case Opt_list_plink:
+ AuLabel(list_plink);
+ break;
+ case Opt_udba:
+ AuDbg("udba %d, %s\n",
+ opt->udba, au_optstr_udba(opt->udba));
+ break;
+ case Opt_dio:
+ AuLabel(dio);
+ break;
+ case Opt_nodio:
+ AuLabel(nodio);
+ break;
+ case Opt_diropq_a:
+ AuLabel(diropq_a);
+ break;
+ case Opt_diropq_w:
+ AuLabel(diropq_w);
+ break;
+ case Opt_warn_perm:
+ AuLabel(warn_perm);
+ break;
+ case Opt_nowarn_perm:
+ AuLabel(nowarn_perm);
+ break;
+ case Opt_verbose:
+ AuLabel(verbose);
+ break;
+ case Opt_noverbose:
+ AuLabel(noverbose);
+ break;
+ case Opt_sum:
+ AuLabel(sum);
+ break;
+ case Opt_nosum:
+ AuLabel(nosum);
+ break;
+ case Opt_wsum:
+ AuLabel(wsum);
+ break;
+ case Opt_wbr_create:
+ u.create = &opt->wbr_create;
+ AuDbg("create %d, %s\n", u.create->wbr_create,
+ au_optstr_wbr_create(u.create->wbr_create));
+ switch (u.create->wbr_create) {
+ case AuWbrCreate_MFSV:
+ case AuWbrCreate_PMFSV:
+ AuDbg("%d sec\n", u.create->mfs_second);
+ break;
+ case AuWbrCreate_MFSRR:
+ case AuWbrCreate_TDMFS:
+ AuDbg("%llu watermark\n",
+ u.create->mfsrr_watermark);
+ break;
+ case AuWbrCreate_MFSRRV:
+ case AuWbrCreate_TDMFSV:
+ case AuWbrCreate_PMFSRRV:
+ AuDbg("%llu watermark, %d sec\n",
+ u.create->mfsrr_watermark,
+ u.create->mfs_second);
+ break;
+ }
+ break;
+ case Opt_wbr_copyup:
+ AuDbg("copyup %d, %s\n", opt->wbr_copyup,
+ au_optstr_wbr_copyup(opt->wbr_copyup));
+ break;
+ case Opt_fhsm_sec:
+ AuDbg("fhsm_sec %u\n", opt->fhsm_second);
+ break;
+ case Opt_dirren:
+ AuLabel(dirren);
+ break;
+ case Opt_nodirren:
+ AuLabel(nodirren);
+ break;
+ case Opt_acl:
+ AuLabel(acl);
+ break;
+ case Opt_noacl:
+ AuLabel(noacl);
+ break;
+ default:
+ BUG();
+ }
+ opt++;
+ }
+#endif
+}
+
+void au_opts_free(struct au_opts *opts)
+{
+ struct au_opt *opt;
+
+ opt = opts->opt;
+ while (opt->type != Opt_tail) {
+ switch (opt->type) {
+ case Opt_add:
+ case Opt_append:
+ case Opt_prepend:
+ path_put(&opt->add.path);
+ break;
+ case Opt_del:
+ case Opt_idel:
+ path_put(&opt->del.h_path);
+ break;
+ case Opt_mod:
+ case Opt_imod:
+ dput(opt->mod.h_root);
+ break;
+ case Opt_xino:
+ fput(opt->xino.file);
+ break;
+ }
+ opt++;
+ }
+}
+
+static int opt_add(struct au_opt *opt, char *opt_str, unsigned long sb_flags,
+ aufs_bindex_t bindex)
+{
+ int err;
+ struct au_opt_add *add = &opt->add;
+ char *p;
+
+ add->bindex = bindex;
+ add->perm = AuBrPerm_RO;
+ add->pathname = opt_str;
+ p = strchr(opt_str, '=');
+ if (p) {
+ *p++ = 0;
+ if (*p)
+ add->perm = br_perm_val(p);
+ }
+
+ err = vfsub_kern_path(add->pathname, lkup_dirflags, &add->path);
+ if (!err) {
+ if (!p) {
+ add->perm = AuBrPerm_RO;
+ if (au_test_fs_rr(add->path.dentry->d_sb))
+ add->perm = AuBrPerm_RR;
+ else if (!bindex && !(sb_flags & SB_RDONLY))
+ add->perm = AuBrPerm_RW;
+ }
+ opt->type = Opt_add;
+ goto out;
+ }
+ pr_err("lookup failed %s (%d)\n", add->pathname, err);
+ err = -EINVAL;
+
+out:
+ return err;
+}
+
+static int au_opts_parse_del(struct au_opt_del *del, substring_t args[])
+{
+ int err;
+
+ del->pathname = args[0].from;
+ AuDbg("del path %s\n", del->pathname);
+
+ err = vfsub_kern_path(del->pathname, lkup_dirflags, &del->h_path);
+ if (unlikely(err))
+ pr_err("lookup failed %s (%d)\n", del->pathname, err);
+
+ return err;
+}
+
+#if 0 /* reserved for future use */
+static int au_opts_parse_idel(struct super_block *sb, aufs_bindex_t bindex,
+ struct au_opt_del *del, substring_t args[])
+{
+ int err;
+ struct dentry *root;
+
+ err = -EINVAL;
+ root = sb->s_root;
+ aufs_read_lock(root, AuLock_FLUSH);
+ if (bindex < 0 || au_sbbot(sb) < bindex) {
+ pr_err("out of bounds, %d\n", bindex);
+ goto out;
+ }
+
+ err = 0;
+ del->h_path.dentry = dget(au_h_dptr(root, bindex));
+ del->h_path.mnt = mntget(au_sbr_mnt(sb, bindex));
+
+out:
+ aufs_read_unlock(root, !AuLock_IR);
+ return err;
+}
+#endif
+
+static int noinline_for_stack
+au_opts_parse_mod(struct au_opt_mod *mod, substring_t args[])
+{
+ int err;
+ struct path path;
+ char *p;
+
+ err = -EINVAL;
+ mod->path = args[0].from;
+ p = strchr(mod->path, '=');
+ if (unlikely(!p)) {
+ pr_err("no permission %s\n", args[0].from);
+ goto out;
+ }
+
+ *p++ = 0;
+ err = vfsub_kern_path(mod->path, lkup_dirflags, &path);
+ if (unlikely(err)) {
+ pr_err("lookup failed %s (%d)\n", mod->path, err);
+ goto out;
+ }
+
+ mod->perm = br_perm_val(p);
+ AuDbg("mod path %s, perm 0x%x, %s\n", mod->path, mod->perm, p);
+ mod->h_root = dget(path.dentry);
+ path_put(&path);
+
+out:
+ return err;
+}
+
+#if 0 /* reserved for future use */
+static int au_opts_parse_imod(struct super_block *sb, aufs_bindex_t bindex,
+ struct au_opt_mod *mod, substring_t args[])
+{
+ int err;
+ struct dentry *root;
+
+ err = -EINVAL;
+ root = sb->s_root;
+ aufs_read_lock(root, AuLock_FLUSH);
+ if (bindex < 0 || au_sbbot(sb) < bindex) {
+ pr_err("out of bounds, %d\n", bindex);
+ goto out;
+ }
+
+ err = 0;
+ mod->perm = br_perm_val(args[1].from);
+ AuDbg("mod path %s, perm 0x%x, %s\n",
+ mod->path, mod->perm, args[1].from);
+ mod->h_root = dget(au_h_dptr(root, bindex));
+
+out:
+ aufs_read_unlock(root, !AuLock_IR);
+ return err;
+}
+#endif
+
+static int au_opts_parse_xino(struct super_block *sb, struct au_opt_xino *xino,
+ substring_t args[])
+{
+ int err;
+ struct file *file;
+
+ file = au_xino_create(sb, args[0].from, /*silent*/0, /*wbrtop*/0);
+ err = PTR_ERR(file);
+ if (IS_ERR(file))
+ goto out;
+
+ err = -EINVAL;
+ if (unlikely(file->f_path.dentry->d_sb == sb)) {
+ fput(file);
+ pr_err("%s must be outside\n", args[0].from);
+ goto out;
+ }
+
+ err = 0;
+ xino->file = file;
+ xino->path = args[0].from;
+
+out:
+ return err;
+}
+
+static int noinline_for_stack
+au_opts_parse_xino_itrunc_path(struct super_block *sb,
+ struct au_opt_xino_itrunc *xino_itrunc,
+ substring_t args[])
+{
+ int err;
+ aufs_bindex_t bbot, bindex;
+ struct path path;
+ struct dentry *root;
+
+ err = vfsub_kern_path(args[0].from, lkup_dirflags, &path);
+ if (unlikely(err)) {
+ pr_err("lookup failed %s (%d)\n", args[0].from, err);
+ goto out;
+ }
+
+ xino_itrunc->bindex = -1;
+ root = sb->s_root;
+ aufs_read_lock(root, AuLock_FLUSH);
+ bbot = au_sbbot(sb);
+ for (bindex = 0; bindex <= bbot; bindex++) {
+ if (au_h_dptr(root, bindex) == path.dentry) {
+ xino_itrunc->bindex = bindex;
+ break;
+ }
+ }
+ aufs_read_unlock(root, !AuLock_IR);
+ path_put(&path);
+
+ if (unlikely(xino_itrunc->bindex < 0)) {
+ pr_err("no such branch %s\n", args[0].from);
+ err = -EINVAL;
+ }
+
+out:
+ return err;
+}
+
+/* called without aufs lock */
+int au_opts_parse(struct super_block *sb, char *str, struct au_opts *opts)
+{
+ int err, n, token;
+ aufs_bindex_t bindex;
+ unsigned char skipped;
+ struct dentry *root;
+ struct au_opt *opt, *opt_tail;
+ char *opt_str;
+ /* reduce the stack space */
+ union {
+ struct au_opt_xino_itrunc *xino_itrunc;
+ struct au_opt_wbr_create *create;
+ } u;
+ struct {
+ substring_t args[MAX_OPT_ARGS];
+ } *a;
+
+ err = -ENOMEM;
+ a = kmalloc(sizeof(*a), GFP_NOFS);
+ if (unlikely(!a))
+ goto out;
+
+ root = sb->s_root;
+ err = 0;
+ bindex = 0;
+ opt = opts->opt;
+ opt_tail = opt + opts->max_opt - 1;
+ opt->type = Opt_tail;
+ while (!err && (opt_str = strsep(&str, ",")) && *opt_str) {
+ err = -EINVAL;
+ skipped = 0;
+ token = match_token(opt_str, options, a->args);
+ switch (token) {
+ case Opt_br:
+ err = 0;
+ while (!err && (opt_str = strsep(&a->args[0].from, ":"))
+ && *opt_str) {
+ err = opt_add(opt, opt_str, opts->sb_flags,
+ bindex++);
+ if (unlikely(!err && ++opt > opt_tail)) {
+ err = -E2BIG;
+ break;
+ }
+ opt->type = Opt_tail;
+ skipped = 1;
+ }
+ break;
+ case Opt_add:
+ if (unlikely(match_int(&a->args[0], &n))) {
+ pr_err("bad integer in %s\n", opt_str);
+ break;
+ }
+ bindex = n;
+ err = opt_add(opt, a->args[1].from, opts->sb_flags,
+ bindex);
+ if (!err)
+ opt->type = token;
+ break;
+ case Opt_append:
+ err = opt_add(opt, a->args[0].from, opts->sb_flags,
+ /*dummy bindex*/1);
+ if (!err)
+ opt->type = token;
+ break;
+ case Opt_prepend:
+ err = opt_add(opt, a->args[0].from, opts->sb_flags,
+ /*bindex*/0);
+ if (!err)
+ opt->type = token;
+ break;
+ case Opt_del:
+ err = au_opts_parse_del(&opt->del, a->args);
+ if (!err)
+ opt->type = token;
+ break;
+#if 0 /* reserved for future use */
+ case Opt_idel:
+ del->pathname = "(indexed)";
+ if (unlikely(match_int(&args[0], &n))) {
+ pr_err("bad integer in %s\n", opt_str);
+ break;
+ }
+ err = au_opts_parse_idel(sb, n, &opt->del, a->args);
+ if (!err)
+ opt->type = token;
+ break;
+#endif
+ case Opt_mod:
+ err = au_opts_parse_mod(&opt->mod, a->args);
+ if (!err)
+ opt->type = token;
+ break;
+#ifdef IMOD /* reserved for future use */
+ case Opt_imod:
+ u.mod->path = "(indexed)";
+ if (unlikely(match_int(&a->args[0], &n))) {
+ pr_err("bad integer in %s\n", opt_str);
+ break;
+ }
+ err = au_opts_parse_imod(sb, n, &opt->mod, a->args);
+ if (!err)
+ opt->type = token;
+ break;
+#endif
+ case Opt_xino:
+ err = au_opts_parse_xino(sb, &opt->xino, a->args);
+ if (!err)
+ opt->type = token;
+ break;
+
+ case Opt_trunc_xino_path:
+ err = au_opts_parse_xino_itrunc_path
+ (sb, &opt->xino_itrunc, a->args);
+ if (!err)
+ opt->type = token;
+ break;
+
+ case Opt_itrunc_xino:
+ u.xino_itrunc = &opt->xino_itrunc;
+ if (unlikely(match_int(&a->args[0], &n))) {
+ pr_err("bad integer in %s\n", opt_str);
+ break;
+ }
+ u.xino_itrunc->bindex = n;
+ aufs_read_lock(root, AuLock_FLUSH);
+ if (n < 0 || au_sbbot(sb) < n) {
+ pr_err("out of bounds, %d\n", n);
+ aufs_read_unlock(root, !AuLock_IR);
+ break;
+ }
+ aufs_read_unlock(root, !AuLock_IR);
+ err = 0;
+ opt->type = token;
+ break;
+
+ case Opt_dirwh:
+ if (unlikely(match_int(&a->args[0], &opt->dirwh)))
+ break;
+ err = 0;
+ opt->type = token;
+ break;
+
+ case Opt_rdcache:
+ if (unlikely(match_int(&a->args[0], &n))) {
+ pr_err("bad integer in %s\n", opt_str);
+ break;
+ }
+ if (unlikely(n > AUFS_RDCACHE_MAX)) {
+ pr_err("rdcache must be smaller than %d\n",
+ AUFS_RDCACHE_MAX);
+ break;
+ }
+ opt->rdcache = n;
+ err = 0;
+ opt->type = token;
+ break;
+ case Opt_rdblk:
+ if (unlikely(match_int(&a->args[0], &n)
+ || n < 0
+ || n > KMALLOC_MAX_SIZE)) {
+ pr_err("bad integer in %s\n", opt_str);
+ break;
+ }
+ if (unlikely(n && n < NAME_MAX)) {
+ pr_err("rdblk must be larger than %d\n",
+ NAME_MAX);
+ break;
+ }
+ opt->rdblk = n;
+ err = 0;
+ opt->type = token;
+ break;
+ case Opt_rdhash:
+ if (unlikely(match_int(&a->args[0], &n)
+ || n < 0
+ || n * sizeof(struct hlist_head)
+ > KMALLOC_MAX_SIZE)) {
+ pr_err("bad integer in %s\n", opt_str);
+ break;
+ }
+ opt->rdhash = n;
+ err = 0;
+ opt->type = token;
+ break;
+
+ case Opt_trunc_xino:
+ case Opt_notrunc_xino:
+ case Opt_noxino:
+ case Opt_trunc_xib:
+ case Opt_notrunc_xib:
+ case Opt_shwh:
+ case Opt_noshwh:
+ case Opt_dirperm1:
+ case Opt_nodirperm1:
+ case Opt_plink:
+ case Opt_noplink:
+ case Opt_list_plink:
+ case Opt_dio:
+ case Opt_nodio:
+ case Opt_diropq_a:
+ case Opt_diropq_w:
+ case Opt_warn_perm:
+ case Opt_nowarn_perm:
+ case Opt_verbose:
+ case Opt_noverbose:
+ case Opt_sum:
+ case Opt_nosum:
+ case Opt_wsum:
+ case Opt_rdblk_def:
+ case Opt_rdhash_def:
+ case Opt_dirren:
+ case Opt_nodirren:
+ case Opt_acl:
+ case Opt_noacl:
+ err = 0;
+ opt->type = token;
+ break;
+
+ case Opt_udba:
+ opt->udba = udba_val(a->args[0].from);
+ if (opt->udba >= 0) {
+ err = 0;
+ opt->type = token;
+ } else
+ pr_err("wrong value, %s\n", opt_str);
+ break;
+
+ case Opt_wbr_create:
+ u.create = &opt->wbr_create;
+ u.create->wbr_create
+ = au_wbr_create_val(a->args[0].from, u.create);
+ if (u.create->wbr_create >= 0) {
+ err = 0;
+ opt->type = token;
+ } else
+ pr_err("wrong value, %s\n", opt_str);
+ break;
+ case Opt_wbr_copyup:
+ opt->wbr_copyup = au_wbr_copyup_val(a->args[0].from);
+ if (opt->wbr_copyup >= 0) {
+ err = 0;
+ opt->type = token;
+ } else
+ pr_err("wrong value, %s\n", opt_str);
+ break;
+
+ case Opt_fhsm_sec:
+ if (unlikely(match_int(&a->args[0], &n)
+ || n < 0)) {
+ pr_err("bad integer in %s\n", opt_str);
+ break;
+ }
+ if (sysaufs_brs) {
+ opt->fhsm_second = n;
+ opt->type = token;
+ } else
+ pr_warn("ignored %s\n", opt_str);
+ err = 0;
+ break;
+
+ case Opt_ignore:
+ pr_warn("ignored %s\n", opt_str);
+ /*FALLTHROUGH*/
+ case Opt_ignore_silent:
+ skipped = 1;
+ err = 0;
+ break;
+ case Opt_err:
+ pr_err("unknown option %s\n", opt_str);
+ break;
+ }
+
+ if (!err && !skipped) {
+ if (unlikely(++opt > opt_tail)) {
+ err = -E2BIG;
+ opt--;
+ opt->type = Opt_tail;
+ break;
+ }
+ opt->type = Opt_tail;
+ }
+ }
+
+ au_kfree_rcu(a);
+ dump_opts(opts);
+ if (unlikely(err))
+ au_opts_free(opts);
+
+out:
+ return err;
+}
+
+static int au_opt_wbr_create(struct super_block *sb,
+ struct au_opt_wbr_create *create)
+{
+ int err;
+ struct au_sbinfo *sbinfo;
+
+ SiMustWriteLock(sb);
+
+ err = 1; /* handled */
+ sbinfo = au_sbi(sb);
+ if (sbinfo->si_wbr_create_ops->fin) {
+ err = sbinfo->si_wbr_create_ops->fin(sb);
+ if (!err)
+ err = 1;
+ }
+
+ sbinfo->si_wbr_create = create->wbr_create;
+ sbinfo->si_wbr_create_ops = au_wbr_create_ops + create->wbr_create;
+ switch (create->wbr_create) {
+ case AuWbrCreate_MFSRRV:
+ case AuWbrCreate_MFSRR:
+ case AuWbrCreate_TDMFS:
+ case AuWbrCreate_TDMFSV:
+ case AuWbrCreate_PMFSRR:
+ case AuWbrCreate_PMFSRRV:
+ sbinfo->si_wbr_mfs.mfsrr_watermark = create->mfsrr_watermark;
+ /*FALLTHROUGH*/
+ case AuWbrCreate_MFS:
+ case AuWbrCreate_MFSV:
+ case AuWbrCreate_PMFS:
+ case AuWbrCreate_PMFSV:
+ sbinfo->si_wbr_mfs.mfs_expire
+ = msecs_to_jiffies(create->mfs_second * MSEC_PER_SEC);
+ break;
+ }
+
+ if (sbinfo->si_wbr_create_ops->init)
+ sbinfo->si_wbr_create_ops->init(sb); /* ignore */
+
+ return err;
+}
+
+/*
+ * returns,
+ * plus: processed without an error
+ * zero: unprocessed
+ */
+static int au_opt_simple(struct super_block *sb, struct au_opt *opt,
+ struct au_opts *opts)
+{
+ int err;
+ struct au_sbinfo *sbinfo;
+
+ SiMustWriteLock(sb);
+
+ err = 1; /* handled */
+ sbinfo = au_sbi(sb);
+ switch (opt->type) {
+ case Opt_udba:
+ sbinfo->si_mntflags &= ~AuOptMask_UDBA;
+ sbinfo->si_mntflags |= opt->udba;
+ opts->given_udba |= opt->udba;
+ break;
+
+ case Opt_plink:
+ au_opt_set(sbinfo->si_mntflags, PLINK);
+ break;
+ case Opt_noplink:
+ if (au_opt_test(sbinfo->si_mntflags, PLINK))
+ au_plink_put(sb, /*verbose*/1);
+ au_opt_clr(sbinfo->si_mntflags, PLINK);
+ break;
+ case Opt_list_plink:
+ if (au_opt_test(sbinfo->si_mntflags, PLINK))
+ au_plink_list(sb);
+ break;
+
+ case Opt_dio:
+ au_opt_set(sbinfo->si_mntflags, DIO);
+ au_fset_opts(opts->flags, REFRESH_DYAOP);
+ break;
+ case Opt_nodio:
+ au_opt_clr(sbinfo->si_mntflags, DIO);
+ au_fset_opts(opts->flags, REFRESH_DYAOP);
+ break;
+
+ case Opt_fhsm_sec:
+ au_fhsm_set(sbinfo, opt->fhsm_second);
+ break;
+
+ case Opt_diropq_a:
+ au_opt_set(sbinfo->si_mntflags, ALWAYS_DIROPQ);
+ break;
+ case Opt_diropq_w:
+ au_opt_clr(sbinfo->si_mntflags, ALWAYS_DIROPQ);
+ break;
+
+ case Opt_warn_perm:
+ au_opt_set(sbinfo->si_mntflags, WARN_PERM);
+ break;
+ case Opt_nowarn_perm:
+ au_opt_clr(sbinfo->si_mntflags, WARN_PERM);
+ break;
+
+ case Opt_verbose:
+ au_opt_set(sbinfo->si_mntflags, VERBOSE);
+ break;
+ case Opt_noverbose:
+ au_opt_clr(sbinfo->si_mntflags, VERBOSE);
+ break;
+
+ case Opt_sum:
+ au_opt_set(sbinfo->si_mntflags, SUM);
+ break;
+ case Opt_wsum:
+ au_opt_clr(sbinfo->si_mntflags, SUM);
+ au_opt_set(sbinfo->si_mntflags, SUM_W);
+ break;
+ case Opt_nosum:
+ au_opt_clr(sbinfo->si_mntflags, SUM);
+ au_opt_clr(sbinfo->si_mntflags, SUM_W);
+ break;
+
+ case Opt_wbr_create:
+ err = au_opt_wbr_create(sb, &opt->wbr_create);
+ break;
+ case Opt_wbr_copyup:
+ sbinfo->si_wbr_copyup = opt->wbr_copyup;
+ sbinfo->si_wbr_copyup_ops = au_wbr_copyup_ops + opt->wbr_copyup;
+ break;
+
+ case Opt_dirwh:
+ sbinfo->si_dirwh = opt->dirwh;
+ break;
+
+ case Opt_rdcache:
+ sbinfo->si_rdcache
+ = msecs_to_jiffies(opt->rdcache * MSEC_PER_SEC);
+ break;
+ case Opt_rdblk:
+ sbinfo->si_rdblk = opt->rdblk;
+ break;
+ case Opt_rdblk_def:
+ sbinfo->si_rdblk = AUFS_RDBLK_DEF;
+ break;
+ case Opt_rdhash:
+ sbinfo->si_rdhash = opt->rdhash;
+ break;
+ case Opt_rdhash_def:
+ sbinfo->si_rdhash = AUFS_RDHASH_DEF;
+ break;
+
+ case Opt_shwh:
+ au_opt_set(sbinfo->si_mntflags, SHWH);
+ break;
+ case Opt_noshwh:
+ au_opt_clr(sbinfo->si_mntflags, SHWH);
+ break;
+
+ case Opt_dirperm1:
+ au_opt_set(sbinfo->si_mntflags, DIRPERM1);
+ break;
+ case Opt_nodirperm1:
+ au_opt_clr(sbinfo->si_mntflags, DIRPERM1);
+ break;
+
+ case Opt_trunc_xino:
+ au_opt_set(sbinfo->si_mntflags, TRUNC_XINO);
+ break;
+ case Opt_notrunc_xino:
+ au_opt_clr(sbinfo->si_mntflags, TRUNC_XINO);
+ break;
+
+ case Opt_trunc_xino_path:
+ case Opt_itrunc_xino:
+ err = au_xino_trunc(sb, opt->xino_itrunc.bindex,
+ /*idx_begin*/0);
+ if (!err)
+ err = 1;
+ break;
+
+ case Opt_trunc_xib:
+ au_fset_opts(opts->flags, TRUNC_XIB);
+ break;
+ case Opt_notrunc_xib:
+ au_fclr_opts(opts->flags, TRUNC_XIB);
+ break;
+
+ case Opt_dirren:
+ err = 1;
+ if (!au_opt_test(sbinfo->si_mntflags, DIRREN)) {
+ err = au_dr_opt_set(sb);
+ if (!err)
+ err = 1;
+ }
+ if (err == 1)
+ au_opt_set(sbinfo->si_mntflags, DIRREN);
+ break;
+ case Opt_nodirren:
+ err = 1;
+ if (au_opt_test(sbinfo->si_mntflags, DIRREN)) {
+ err = au_dr_opt_clr(sb, au_ftest_opts(opts->flags,
+ DR_FLUSHED));
+ if (!err)
+ err = 1;
+ }
+ if (err == 1)
+ au_opt_clr(sbinfo->si_mntflags, DIRREN);
+ break;
+
+ case Opt_acl:
+ sb->s_flags |= SB_POSIXACL;
+ break;
+ case Opt_noacl:
+ sb->s_flags &= ~SB_POSIXACL;
+ break;
+
+ default:
+ err = 0;
+ break;
+ }
+
+ return err;
+}
+
+/*
+ * returns tri-state.
+ * plus: processed without an error
+ * zero: unprocessed
+ * minus: error
+ */
+static int au_opt_br(struct super_block *sb, struct au_opt *opt,
+ struct au_opts *opts)
+{
+ int err, do_refresh;
+
+ err = 0;
+ switch (opt->type) {
+ case Opt_append:
+ opt->add.bindex = au_sbbot(sb) + 1;
+ if (opt->add.bindex < 0)
+ opt->add.bindex = 0;
+ goto add;
+ /* Always goto add, not fallthrough */
+ case Opt_prepend:
+ opt->add.bindex = 0;
+ /* fallthrough */
+ add: /* indented label */
+ case Opt_add:
+ err = au_br_add(sb, &opt->add,
+ au_ftest_opts(opts->flags, REMOUNT));
+ if (!err) {
+ err = 1;
+ au_fset_opts(opts->flags, REFRESH);
+ }
+ break;
+
+ case Opt_del:
+ case Opt_idel:
+ err = au_br_del(sb, &opt->del,
+ au_ftest_opts(opts->flags, REMOUNT));
+ if (!err) {
+ err = 1;
+ au_fset_opts(opts->flags, TRUNC_XIB);
+ au_fset_opts(opts->flags, REFRESH);
+ }
+ break;
+
+ case Opt_mod:
+ case Opt_imod:
+ err = au_br_mod(sb, &opt->mod,
+ au_ftest_opts(opts->flags, REMOUNT),
+ &do_refresh);
+ if (!err) {
+ err = 1;
+ if (do_refresh)
+ au_fset_opts(opts->flags, REFRESH);
+ }
+ break;
+ }
+ return err;
+}
+
+static int au_opt_xino(struct super_block *sb, struct au_opt *opt,
+ struct au_opt_xino **opt_xino,
+ struct au_opts *opts)
+{
+ int err;
+
+ err = 0;
+ switch (opt->type) {
+ case Opt_xino:
+ err = au_xino_set(sb, &opt->xino,
+ !!au_ftest_opts(opts->flags, REMOUNT));
+ if (unlikely(err))
+ break;
+
+ *opt_xino = &opt->xino;
+ break;
+
+ case Opt_noxino:
+ au_xino_clr(sb);
+ *opt_xino = (void *)-1;
+ break;
+ }
+
+ return err;
+}
+
+int au_opts_verify(struct super_block *sb, unsigned long sb_flags,
+ unsigned int pending)
+{
+ int err, fhsm;
+ aufs_bindex_t bindex, bbot;
+ unsigned char do_plink, skip, do_free, can_no_dreval;
+ struct au_branch *br;
+ struct au_wbr *wbr;
+ struct dentry *root, *dentry;
+ struct inode *dir, *h_dir;
+ struct au_sbinfo *sbinfo;
+ struct au_hinode *hdir;
+
+ SiMustAnyLock(sb);
+
+ sbinfo = au_sbi(sb);
+ AuDebugOn(!(sbinfo->si_mntflags & AuOptMask_UDBA));
+
+ if (!(sb_flags & SB_RDONLY)) {
+ if (unlikely(!au_br_writable(au_sbr_perm(sb, 0))))
+ pr_warn("first branch should be rw\n");
+ if (unlikely(au_opt_test(sbinfo->si_mntflags, SHWH)))
+ pr_warn_once("shwh should be used with ro\n");
+ }
+
+ if (au_opt_test((sbinfo->si_mntflags | pending), UDBA_HNOTIFY)
+ && !au_opt_test(sbinfo->si_mntflags, XINO))
+ pr_warn_once("udba=*notify requires xino\n");
+
+ if (au_opt_test(sbinfo->si_mntflags, DIRPERM1))
+ pr_warn_once("dirperm1 breaks the protection"
+ " by the permission bits on the lower branch\n");
+
+ err = 0;
+ fhsm = 0;
+ root = sb->s_root;
+ dir = d_inode(root);
+ do_plink = !!au_opt_test(sbinfo->si_mntflags, PLINK);
+ can_no_dreval = !!au_opt_test((sbinfo->si_mntflags | pending),
+ UDBA_NONE);
+ bbot = au_sbbot(sb);
+ for (bindex = 0; !err && bindex <= bbot; bindex++) {
+ skip = 0;
+ h_dir = au_h_iptr(dir, bindex);
+ br = au_sbr(sb, bindex);
+
+ if ((br->br_perm & AuBrAttr_ICEX)
+ && !h_dir->i_op->listxattr)
+ br->br_perm &= ~AuBrAttr_ICEX;
+#if 0
+ if ((br->br_perm & AuBrAttr_ICEX_SEC)
+ && (au_br_sb(br)->s_flags & SB_NOSEC))
+ br->br_perm &= ~AuBrAttr_ICEX_SEC;
+#endif
+
+ do_free = 0;
+ wbr = br->br_wbr;
+ if (wbr)
+ wbr_wh_read_lock(wbr);
+
+ if (!au_br_writable(br->br_perm)) {
+ do_free = !!wbr;
+ skip = (!wbr
+ || (!wbr->wbr_whbase
+ && !wbr->wbr_plink
+ && !wbr->wbr_orph));
+ } else if (!au_br_wh_linkable(br->br_perm)) {
+ /* skip = (!br->br_whbase && !br->br_orph); */
+ skip = (!wbr || !wbr->wbr_whbase);
+ if (skip && wbr) {
+ if (do_plink)
+ skip = !!wbr->wbr_plink;
+ else
+ skip = !wbr->wbr_plink;
+ }
+ } else {
+ /* skip = (br->br_whbase && br->br_ohph); */
+ skip = (wbr && wbr->wbr_whbase);
+ if (skip) {
+ if (do_plink)
+ skip = !!wbr->wbr_plink;
+ else
+ skip = !wbr->wbr_plink;
+ }
+ }
+ if (wbr)
+ wbr_wh_read_unlock(wbr);
+
+ if (can_no_dreval) {
+ dentry = br->br_path.dentry;
+ spin_lock(&dentry->d_lock);
+ if (dentry->d_flags &
+ (DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE))
+ can_no_dreval = 0;
+ spin_unlock(&dentry->d_lock);
+ }
+
+ if (au_br_fhsm(br->br_perm)) {
+ fhsm++;
+ AuDebugOn(!br->br_fhsm);
+ }
+
+ if (skip)
+ continue;
+
+ hdir = au_hi(dir, bindex);
+ au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
+ if (wbr)
+ wbr_wh_write_lock(wbr);
+ err = au_wh_init(br, sb);
+ if (wbr)
+ wbr_wh_write_unlock(wbr);
+ au_hn_inode_unlock(hdir);
+
+ if (!err && do_free) {
+ au_kfree_rcu(wbr);
+ br->br_wbr = NULL;
+ }
+ }
+
+ if (can_no_dreval)
+ au_fset_si(sbinfo, NO_DREVAL);
+ else
+ au_fclr_si(sbinfo, NO_DREVAL);
+
+ if (fhsm >= 2) {
+ au_fset_si(sbinfo, FHSM);
+ for (bindex = bbot; bindex >= 0; bindex--) {
+ br = au_sbr(sb, bindex);
+ if (au_br_fhsm(br->br_perm)) {
+ au_fhsm_set_bottom(sb, bindex);
+ break;
+ }
+ }
+ } else {
+ au_fclr_si(sbinfo, FHSM);
+ au_fhsm_set_bottom(sb, -1);
+ }
+
+ return err;
+}
+
+int au_opts_mount(struct super_block *sb, struct au_opts *opts)
+{
+ int err;
+ unsigned int tmp;
+ aufs_bindex_t bindex, bbot;
+ struct au_opt *opt;
+ struct au_opt_xino *opt_xino, xino;
+ struct au_sbinfo *sbinfo;
+ struct au_branch *br;
+ struct inode *dir;
+
+ SiMustWriteLock(sb);
+
+ err = 0;
+ opt_xino = NULL;
+ opt = opts->opt;
+ while (err >= 0 && opt->type != Opt_tail)
+ err = au_opt_simple(sb, opt++, opts);
+ if (err > 0)
+ err = 0;
+ else if (unlikely(err < 0))
+ goto out;
+
+ /* disable xino and udba temporary */
+ sbinfo = au_sbi(sb);
+ tmp = sbinfo->si_mntflags;
+ au_opt_clr(sbinfo->si_mntflags, XINO);
+ au_opt_set_udba(sbinfo->si_mntflags, UDBA_REVAL);
+
+ opt = opts->opt;
+ while (err >= 0 && opt->type != Opt_tail)
+ err = au_opt_br(sb, opt++, opts);
+ if (err > 0)
+ err = 0;
+ else if (unlikely(err < 0))
+ goto out;
+
+ bbot = au_sbbot(sb);
+ if (unlikely(bbot < 0)) {
+ err = -EINVAL;
+ pr_err("no branches\n");
+ goto out;
+ }
+
+ if (au_opt_test(tmp, XINO))
+ au_opt_set(sbinfo->si_mntflags, XINO);
+ opt = opts->opt;
+ while (!err && opt->type != Opt_tail)
+ err = au_opt_xino(sb, opt++, &opt_xino, opts);
+ if (unlikely(err))
+ goto out;
+
+ err = au_opts_verify(sb, sb->s_flags, tmp);
+ if (unlikely(err))
+ goto out;
+
+ /* restore xino */
+ if (au_opt_test(tmp, XINO) && !opt_xino) {
+ xino.file = au_xino_def(sb);
+ err = PTR_ERR(xino.file);
+ if (IS_ERR(xino.file))
+ goto out;
+
+ err = au_xino_set(sb, &xino, /*remount*/0);
+ fput(xino.file);
+ if (unlikely(err))
+ goto out;
+ }
+
+ /* restore udba */
+ tmp &= AuOptMask_UDBA;
+ sbinfo->si_mntflags &= ~AuOptMask_UDBA;
+ sbinfo->si_mntflags |= tmp;
+ bbot = au_sbbot(sb);
+ for (bindex = 0; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ err = au_hnotify_reset_br(tmp, br, br->br_perm);
+ if (unlikely(err))
+ AuIOErr("hnotify failed on br %d, %d, ignored\n",
+ bindex, err);
+ /* go on even if err */
+ }
+ if (au_opt_test(tmp, UDBA_HNOTIFY)) {
+ dir = d_inode(sb->s_root);
+ au_hn_reset(dir, au_hi_flags(dir, /*isdir*/1) & ~AuHi_XINO);
+ }
+
+out:
+ return err;
+}
+
+int au_opts_remount(struct super_block *sb, struct au_opts *opts)
+{
+ int err, rerr;
+ unsigned char no_dreval;
+ struct inode *dir;
+ struct au_opt_xino *opt_xino;
+ struct au_opt *opt;
+ struct au_sbinfo *sbinfo;
+
+ SiMustWriteLock(sb);
+
+ err = au_dr_opt_flush(sb);
+ if (unlikely(err))
+ goto out;
+ au_fset_opts(opts->flags, DR_FLUSHED);
+
+ dir = d_inode(sb->s_root);
+ sbinfo = au_sbi(sb);
+ opt_xino = NULL;
+ opt = opts->opt;
+ while (err >= 0 && opt->type != Opt_tail) {
+ err = au_opt_simple(sb, opt, opts);
+ if (!err)
+ err = au_opt_br(sb, opt, opts);
+ if (!err)
+ err = au_opt_xino(sb, opt, &opt_xino, opts);
+ opt++;
+ }
+ if (err > 0)
+ err = 0;
+ AuTraceErr(err);
+ /* go on even err */
+
+ no_dreval = !!au_ftest_si(sbinfo, NO_DREVAL);
+ rerr = au_opts_verify(sb, opts->sb_flags, /*pending*/0);
+ if (unlikely(rerr && !err))
+ err = rerr;
+
+ if (no_dreval != !!au_ftest_si(sbinfo, NO_DREVAL))
+ au_fset_opts(opts->flags, REFRESH_IDOP);
+
+ if (au_ftest_opts(opts->flags, TRUNC_XIB)) {
+ rerr = au_xib_trunc(sb);
+ if (unlikely(rerr && !err))
+ err = rerr;
+ }
+
+ /* will be handled by the caller */
+ if (!au_ftest_opts(opts->flags, REFRESH)
+ && (opts->given_udba
+ || au_opt_test(sbinfo->si_mntflags, XINO)
+ || au_ftest_opts(opts->flags, REFRESH_IDOP)
+ ))
+ au_fset_opts(opts->flags, REFRESH);
+
+ AuDbg("status 0x%x\n", opts->flags);
+
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+unsigned int au_opt_udba(struct super_block *sb)
+{
+ return au_mntflags(sb) & AuOptMask_UDBA;
+}
diff --git a/fs/aufs/opts.h b/fs/aufs/opts.h
new file mode 100644
index 0000000000..6326b54340
--- /dev/null
+++ b/fs/aufs/opts.h
@@ -0,0 +1,225 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * mount options/flags
+ */
+
+#ifndef __AUFS_OPTS_H__
+#define __AUFS_OPTS_H__
+
+#ifdef __KERNEL__
+
+#include <linux/path.h>
+
+struct file;
+
+/* ---------------------------------------------------------------------- */
+
+/* mount flags */
+#define AuOpt_XINO 1 /* external inode number bitmap
+ and translation table */
+#define AuOpt_TRUNC_XINO (1 << 1) /* truncate xino files */
+#define AuOpt_UDBA_NONE (1 << 2) /* users direct branch access */
+#define AuOpt_UDBA_REVAL (1 << 3)
+#define AuOpt_UDBA_HNOTIFY (1 << 4)
+#define AuOpt_SHWH (1 << 5) /* show whiteout */
+#define AuOpt_PLINK (1 << 6) /* pseudo-link */
+#define AuOpt_DIRPERM1 (1 << 7) /* ignore the lower dir's perm
+ bits */
+#define AuOpt_ALWAYS_DIROPQ (1 << 9) /* policy to creating diropq */
+#define AuOpt_SUM (1 << 10) /* summation for statfs(2) */
+#define AuOpt_SUM_W (1 << 11) /* unimplemented */
+#define AuOpt_WARN_PERM (1 << 12) /* warn when add-branch */
+#define AuOpt_VERBOSE (1 << 13) /* print the cause of error */
+#define AuOpt_DIO (1 << 14) /* direct io */
+#define AuOpt_DIRREN (1 << 15) /* directory rename */
+
+#ifndef CONFIG_AUFS_HNOTIFY
+#undef AuOpt_UDBA_HNOTIFY
+#define AuOpt_UDBA_HNOTIFY 0
+#endif
+#ifndef CONFIG_AUFS_DIRREN
+#undef AuOpt_DIRREN
+#define AuOpt_DIRREN 0
+#endif
+#ifndef CONFIG_AUFS_SHWH
+#undef AuOpt_SHWH
+#define AuOpt_SHWH 0
+#endif
+
+#define AuOpt_Def (AuOpt_XINO \
+ | AuOpt_UDBA_REVAL \
+ | AuOpt_PLINK \
+ /* | AuOpt_DIRPERM1 */ \
+ | AuOpt_WARN_PERM)
+#define AuOptMask_UDBA (AuOpt_UDBA_NONE \
+ | AuOpt_UDBA_REVAL \
+ | AuOpt_UDBA_HNOTIFY)
+
+#define au_opt_test(flags, name) (flags & AuOpt_##name)
+#define au_opt_set(flags, name) do { \
+ BUILD_BUG_ON(AuOpt_##name & AuOptMask_UDBA); \
+ ((flags) |= AuOpt_##name); \
+} while (0)
+#define au_opt_set_udba(flags, name) do { \
+ (flags) &= ~AuOptMask_UDBA; \
+ ((flags) |= AuOpt_##name); \
+} while (0)
+#define au_opt_clr(flags, name) do { \
+ ((flags) &= ~AuOpt_##name); \
+} while (0)
+
+static inline unsigned int au_opts_plink(unsigned int mntflags)
+{
+#ifdef CONFIG_PROC_FS
+ return mntflags;
+#else
+ return mntflags & ~AuOpt_PLINK;
+#endif
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* policies to select one among multiple writable branches */
+enum {
+ AuWbrCreate_TDP, /* top down parent */
+ AuWbrCreate_RR, /* round robin */
+ AuWbrCreate_MFS, /* most free space */
+ AuWbrCreate_MFSV, /* mfs with seconds */
+ AuWbrCreate_MFSRR, /* mfs then rr */
+ AuWbrCreate_MFSRRV, /* mfs then rr with seconds */
+ AuWbrCreate_TDMFS, /* top down regardless parent and mfs */
+ AuWbrCreate_TDMFSV, /* top down regardless parent and mfs */
+ AuWbrCreate_PMFS, /* parent and mfs */
+ AuWbrCreate_PMFSV, /* parent and mfs with seconds */
+ AuWbrCreate_PMFSRR, /* parent, mfs and round-robin */
+ AuWbrCreate_PMFSRRV, /* plus seconds */
+
+ AuWbrCreate_Def = AuWbrCreate_TDP
+};
+
+enum {
+ AuWbrCopyup_TDP, /* top down parent */
+ AuWbrCopyup_BUP, /* bottom up parent */
+ AuWbrCopyup_BU, /* bottom up */
+
+ AuWbrCopyup_Def = AuWbrCopyup_TDP
+};
+
+/* ---------------------------------------------------------------------- */
+
+struct au_opt_add {
+ aufs_bindex_t bindex;
+ char *pathname;
+ int perm;
+ struct path path;
+};
+
+struct au_opt_del {
+ char *pathname;
+ struct path h_path;
+};
+
+struct au_opt_mod {
+ char *path;
+ int perm;
+ struct dentry *h_root;
+};
+
+struct au_opt_xino {
+ char *path;
+ struct file *file;
+};
+
+struct au_opt_xino_itrunc {
+ aufs_bindex_t bindex;
+};
+
+struct au_opt_wbr_create {
+ int wbr_create;
+ int mfs_second;
+ unsigned long long mfsrr_watermark;
+};
+
+struct au_opt {
+ int type;
+ union {
+ struct au_opt_xino xino;
+ struct au_opt_xino_itrunc xino_itrunc;
+ struct au_opt_add add;
+ struct au_opt_del del;
+ struct au_opt_mod mod;
+ int dirwh;
+ int rdcache;
+ unsigned int rdblk;
+ unsigned int rdhash;
+ int udba;
+ struct au_opt_wbr_create wbr_create;
+ int wbr_copyup;
+ unsigned int fhsm_second;
+ };
+};
+
+/* opts flags */
+#define AuOpts_REMOUNT 1
+#define AuOpts_REFRESH (1 << 1)
+#define AuOpts_TRUNC_XIB (1 << 2)
+#define AuOpts_REFRESH_DYAOP (1 << 3)
+#define AuOpts_REFRESH_IDOP (1 << 4)
+#define AuOpts_DR_FLUSHED (1 << 5)
+#define au_ftest_opts(flags, name) ((flags) & AuOpts_##name)
+#define au_fset_opts(flags, name) \
+ do { (flags) |= AuOpts_##name; } while (0)
+#define au_fclr_opts(flags, name) \
+ do { (flags) &= ~AuOpts_##name; } while (0)
+
+#ifndef CONFIG_AUFS_DIRREN
+#undef AuOpts_DR_FLUSHED
+#define AuOpts_DR_FLUSHED 0
+#endif
+
+struct au_opts {
+ struct au_opt *opt;
+ int max_opt;
+
+ unsigned int given_udba;
+ unsigned int flags;
+ unsigned long sb_flags;
+};
+
+/* ---------------------------------------------------------------------- */
+
+/* opts.c */
+void au_optstr_br_perm(au_br_perm_str_t *str, int perm);
+const char *au_optstr_udba(int udba);
+const char *au_optstr_wbr_copyup(int wbr_copyup);
+const char *au_optstr_wbr_create(int wbr_create);
+
+void au_opts_free(struct au_opts *opts);
+struct super_block;
+int au_opts_parse(struct super_block *sb, char *str, struct au_opts *opts);
+int au_opts_verify(struct super_block *sb, unsigned long sb_flags,
+ unsigned int pending);
+int au_opts_mount(struct super_block *sb, struct au_opts *opts);
+int au_opts_remount(struct super_block *sb, struct au_opts *opts);
+
+unsigned int au_opt_udba(struct super_block *sb);
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_OPTS_H__ */
diff --git a/fs/aufs/plink.c b/fs/aufs/plink.c
new file mode 100644
index 0000000000..718edb8827
--- /dev/null
+++ b/fs/aufs/plink.c
@@ -0,0 +1,516 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * pseudo-link
+ */
+
+#include "aufs.h"
+
+/*
+ * the pseudo-link maintenance mode.
+ * during a user process maintains the pseudo-links,
+ * prohibit adding a new plink and branch manipulation.
+ *
+ * Flags
+ * NOPLM:
+ * For entry functions which will handle plink, and i_mutex is already held
+ * in VFS.
+ * They cannot wait and should return an error at once.
+ * Callers has to check the error.
+ * NOPLMW:
+ * For entry functions which will handle plink, but i_mutex is not held
+ * in VFS.
+ * They can wait the plink maintenance mode to finish.
+ *
+ * They behave like F_SETLK and F_SETLKW.
+ * If the caller never handle plink, then both flags are unnecessary.
+ */
+
+int au_plink_maint(struct super_block *sb, int flags)
+{
+ int err;
+ pid_t pid, ppid;
+ struct task_struct *parent, *prev;
+ struct au_sbinfo *sbi;
+
+ SiMustAnyLock(sb);
+
+ err = 0;
+ if (!au_opt_test(au_mntflags(sb), PLINK))
+ goto out;
+
+ sbi = au_sbi(sb);
+ pid = sbi->si_plink_maint_pid;
+ if (!pid || pid == current->pid)
+ goto out;
+
+ /* todo: it highly depends upon /sbin/mount.aufs */
+ prev = NULL;
+ parent = current;
+ ppid = 0;
+ rcu_read_lock();
+ while (1) {
+ parent = rcu_dereference(parent->real_parent);
+ if (parent == prev)
+ break;
+ ppid = task_pid_vnr(parent);
+ if (pid == ppid) {
+ rcu_read_unlock();
+ goto out;
+ }
+ prev = parent;
+ }
+ rcu_read_unlock();
+
+ if (au_ftest_lock(flags, NOPLMW)) {
+ /* if there is no i_mutex lock in VFS, we don't need to wait */
+ /* AuDebugOn(!lockdep_depth(current)); */
+ while (sbi->si_plink_maint_pid) {
+ si_read_unlock(sb);
+ /* gave up wake_up_bit() */
+ wait_event(sbi->si_plink_wq, !sbi->si_plink_maint_pid);
+
+ if (au_ftest_lock(flags, FLUSH))
+ au_nwt_flush(&sbi->si_nowait);
+ si_noflush_read_lock(sb);
+ }
+ } else if (au_ftest_lock(flags, NOPLM)) {
+ AuDbg("ppid %d, pid %d\n", ppid, pid);
+ err = -EAGAIN;
+ }
+
+out:
+ return err;
+}
+
+void au_plink_maint_leave(struct au_sbinfo *sbinfo)
+{
+ spin_lock(&sbinfo->si_plink_maint_lock);
+ sbinfo->si_plink_maint_pid = 0;
+ spin_unlock(&sbinfo->si_plink_maint_lock);
+ wake_up_all(&sbinfo->si_plink_wq);
+}
+
+int au_plink_maint_enter(struct super_block *sb)
+{
+ int err;
+ struct au_sbinfo *sbinfo;
+
+ err = 0;
+ sbinfo = au_sbi(sb);
+ /* make sure i am the only one in this fs */
+ si_write_lock(sb, AuLock_FLUSH);
+ if (au_opt_test(au_mntflags(sb), PLINK)) {
+ spin_lock(&sbinfo->si_plink_maint_lock);
+ if (!sbinfo->si_plink_maint_pid)
+ sbinfo->si_plink_maint_pid = current->pid;
+ else
+ err = -EBUSY;
+ spin_unlock(&sbinfo->si_plink_maint_lock);
+ }
+ si_write_unlock(sb);
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_DEBUG
+void au_plink_list(struct super_block *sb)
+{
+ int i;
+ struct au_sbinfo *sbinfo;
+ struct hlist_bl_head *hbl;
+ struct hlist_bl_node *pos;
+ struct au_icntnr *icntnr;
+
+ SiMustAnyLock(sb);
+
+ sbinfo = au_sbi(sb);
+ AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK));
+ AuDebugOn(au_plink_maint(sb, AuLock_NOPLM));
+
+ for (i = 0; i < AuPlink_NHASH; i++) {
+ hbl = sbinfo->si_plink + i;
+ hlist_bl_lock(hbl);
+ hlist_bl_for_each_entry(icntnr, pos, hbl, plink)
+ AuDbg("%lu\n", icntnr->vfs_inode.i_ino);
+ hlist_bl_unlock(hbl);
+ }
+}
+#endif
+
+/* is the inode pseudo-linked? */
+int au_plink_test(struct inode *inode)
+{
+ int found, i;
+ struct au_sbinfo *sbinfo;
+ struct hlist_bl_head *hbl;
+ struct hlist_bl_node *pos;
+ struct au_icntnr *icntnr;
+
+ sbinfo = au_sbi(inode->i_sb);
+ AuRwMustAnyLock(&sbinfo->si_rwsem);
+ AuDebugOn(!au_opt_test(au_mntflags(inode->i_sb), PLINK));
+ AuDebugOn(au_plink_maint(inode->i_sb, AuLock_NOPLM));
+
+ found = 0;
+ i = au_plink_hash(inode->i_ino);
+ hbl = sbinfo->si_plink + i;
+ hlist_bl_lock(hbl);
+ hlist_bl_for_each_entry(icntnr, pos, hbl, plink)
+ if (&icntnr->vfs_inode == inode) {
+ found = 1;
+ break;
+ }
+ hlist_bl_unlock(hbl);
+ return found;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * generate a name for plink.
+ * the file will be stored under AUFS_WH_PLINKDIR.
+ */
+/* 20 is max digits length of ulong 64 */
+#define PLINK_NAME_LEN ((20 + 1) * 2)
+
+static int plink_name(char *name, int len, struct inode *inode,
+ aufs_bindex_t bindex)
+{
+ int rlen;
+ struct inode *h_inode;
+
+ h_inode = au_h_iptr(inode, bindex);
+ rlen = snprintf(name, len, "%lu.%lu", inode->i_ino, h_inode->i_ino);
+ return rlen;
+}
+
+struct au_do_plink_lkup_args {
+ struct dentry **errp;
+ struct qstr *tgtname;
+ struct dentry *h_parent;
+ struct au_branch *br;
+};
+
+static struct dentry *au_do_plink_lkup(struct qstr *tgtname,
+ struct dentry *h_parent,
+ struct au_branch *br)
+{
+ struct dentry *h_dentry;
+ struct inode *h_inode;
+
+ h_inode = d_inode(h_parent);
+ inode_lock_shared_nested(h_inode, AuLsc_I_CHILD2);
+ h_dentry = vfsub_lkup_one(tgtname, h_parent);
+ inode_unlock_shared(h_inode);
+ return h_dentry;
+}
+
+static void au_call_do_plink_lkup(void *args)
+{
+ struct au_do_plink_lkup_args *a = args;
+ *a->errp = au_do_plink_lkup(a->tgtname, a->h_parent, a->br);
+}
+
+/* lookup the plink-ed @inode under the branch at @bindex */
+struct dentry *au_plink_lkup(struct inode *inode, aufs_bindex_t bindex)
+{
+ struct dentry *h_dentry, *h_parent;
+ struct au_branch *br;
+ int wkq_err;
+ char a[PLINK_NAME_LEN];
+ struct qstr tgtname = QSTR_INIT(a, 0);
+
+ AuDebugOn(au_plink_maint(inode->i_sb, AuLock_NOPLM));
+
+ br = au_sbr(inode->i_sb, bindex);
+ h_parent = br->br_wbr->wbr_plink;
+ tgtname.len = plink_name(a, sizeof(a), inode, bindex);
+
+ if (!uid_eq(current_fsuid(), GLOBAL_ROOT_UID)) {
+ struct au_do_plink_lkup_args args = {
+ .errp = &h_dentry,
+ .tgtname = &tgtname,
+ .h_parent = h_parent,
+ .br = br
+ };
+
+ wkq_err = au_wkq_wait(au_call_do_plink_lkup, &args);
+ if (unlikely(wkq_err))
+ h_dentry = ERR_PTR(wkq_err);
+ } else
+ h_dentry = au_do_plink_lkup(&tgtname, h_parent, br);
+
+ return h_dentry;
+}
+
+/* create a pseudo-link */
+static int do_whplink(struct qstr *tgt, struct dentry *h_parent,
+ struct dentry *h_dentry, struct au_branch *br)
+{
+ int err;
+ struct path h_path = {
+ .mnt = au_br_mnt(br)
+ };
+ struct inode *h_dir, *delegated;
+
+ h_dir = d_inode(h_parent);
+ inode_lock_nested(h_dir, AuLsc_I_CHILD2);
+again:
+ h_path.dentry = vfsub_lkup_one(tgt, h_parent);
+ err = PTR_ERR(h_path.dentry);
+ if (IS_ERR(h_path.dentry))
+ goto out;
+
+ err = 0;
+ /* wh.plink dir is not monitored */
+ /* todo: is it really safe? */
+ if (d_is_positive(h_path.dentry)
+ && d_inode(h_path.dentry) != d_inode(h_dentry)) {
+ delegated = NULL;
+ err = vfsub_unlink(h_dir, &h_path, &delegated, /*force*/0);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal unlink\n");
+ iput(delegated);
+ }
+ dput(h_path.dentry);
+ h_path.dentry = NULL;
+ if (!err)
+ goto again;
+ }
+ if (!err && d_is_negative(h_path.dentry)) {
+ delegated = NULL;
+ err = vfsub_link(h_dentry, h_dir, &h_path, &delegated);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal link\n");
+ iput(delegated);
+ }
+ }
+ dput(h_path.dentry);
+
+out:
+ inode_unlock(h_dir);
+ return err;
+}
+
+struct do_whplink_args {
+ int *errp;
+ struct qstr *tgt;
+ struct dentry *h_parent;
+ struct dentry *h_dentry;
+ struct au_branch *br;
+};
+
+static void call_do_whplink(void *args)
+{
+ struct do_whplink_args *a = args;
+ *a->errp = do_whplink(a->tgt, a->h_parent, a->h_dentry, a->br);
+}
+
+static int whplink(struct dentry *h_dentry, struct inode *inode,
+ aufs_bindex_t bindex, struct au_branch *br)
+{
+ int err, wkq_err;
+ struct au_wbr *wbr;
+ struct dentry *h_parent;
+ char a[PLINK_NAME_LEN];
+ struct qstr tgtname = QSTR_INIT(a, 0);
+
+ wbr = au_sbr(inode->i_sb, bindex)->br_wbr;
+ h_parent = wbr->wbr_plink;
+ tgtname.len = plink_name(a, sizeof(a), inode, bindex);
+
+ /* always superio. */
+ if (!uid_eq(current_fsuid(), GLOBAL_ROOT_UID)) {
+ struct do_whplink_args args = {
+ .errp = &err,
+ .tgt = &tgtname,
+ .h_parent = h_parent,
+ .h_dentry = h_dentry,
+ .br = br
+ };
+ wkq_err = au_wkq_wait(call_do_whplink, &args);
+ if (unlikely(wkq_err))
+ err = wkq_err;
+ } else
+ err = do_whplink(&tgtname, h_parent, h_dentry, br);
+
+ return err;
+}
+
+/*
+ * create a new pseudo-link for @h_dentry on @bindex.
+ * the linked inode is held in aufs @inode.
+ */
+void au_plink_append(struct inode *inode, aufs_bindex_t bindex,
+ struct dentry *h_dentry)
+{
+ struct super_block *sb;
+ struct au_sbinfo *sbinfo;
+ struct hlist_bl_head *hbl;
+ struct hlist_bl_node *pos;
+ struct au_icntnr *icntnr;
+ int found, err, cnt, i;
+
+ sb = inode->i_sb;
+ sbinfo = au_sbi(sb);
+ AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK));
+ AuDebugOn(au_plink_maint(sb, AuLock_NOPLM));
+
+ found = au_plink_test(inode);
+ if (found)
+ return;
+
+ i = au_plink_hash(inode->i_ino);
+ hbl = sbinfo->si_plink + i;
+ au_igrab(inode);
+
+ hlist_bl_lock(hbl);
+ hlist_bl_for_each_entry(icntnr, pos, hbl, plink) {
+ if (&icntnr->vfs_inode == inode) {
+ found = 1;
+ break;
+ }
+ }
+ if (!found) {
+ icntnr = container_of(inode, struct au_icntnr, vfs_inode);
+ hlist_bl_add_head(&icntnr->plink, hbl);
+ }
+ hlist_bl_unlock(hbl);
+ if (!found) {
+ cnt = au_hbl_count(hbl);
+#define msg "unexpectedly unbalanced or too many pseudo-links"
+ if (cnt > AUFS_PLINK_WARN)
+ AuWarn1(msg ", %d\n", cnt);
+#undef msg
+ err = whplink(h_dentry, inode, bindex, au_sbr(sb, bindex));
+ if (unlikely(err)) {
+ pr_warn("err %d, damaged pseudo link.\n", err);
+ au_hbl_del(&icntnr->plink, hbl);
+ iput(&icntnr->vfs_inode);
+ }
+ } else
+ iput(&icntnr->vfs_inode);
+}
+
+/* free all plinks */
+void au_plink_put(struct super_block *sb, int verbose)
+{
+ int i, warned;
+ struct au_sbinfo *sbinfo;
+ struct hlist_bl_head *hbl;
+ struct hlist_bl_node *pos, *tmp;
+ struct au_icntnr *icntnr;
+
+ SiMustWriteLock(sb);
+
+ sbinfo = au_sbi(sb);
+ AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK));
+ AuDebugOn(au_plink_maint(sb, AuLock_NOPLM));
+
+ /* no spin_lock since sbinfo is write-locked */
+ warned = 0;
+ for (i = 0; i < AuPlink_NHASH; i++) {
+ hbl = sbinfo->si_plink + i;
+ if (!warned && verbose && !hlist_bl_empty(hbl)) {
+ pr_warn("pseudo-link is not flushed");
+ warned = 1;
+ }
+ hlist_bl_for_each_entry_safe(icntnr, pos, tmp, hbl, plink)
+ iput(&icntnr->vfs_inode);
+ INIT_HLIST_BL_HEAD(hbl);
+ }
+}
+
+void au_plink_clean(struct super_block *sb, int verbose)
+{
+ struct dentry *root;
+
+ root = sb->s_root;
+ aufs_write_lock(root);
+ if (au_opt_test(au_mntflags(sb), PLINK))
+ au_plink_put(sb, verbose);
+ aufs_write_unlock(root);
+}
+
+static int au_plink_do_half_refresh(struct inode *inode, aufs_bindex_t br_id)
+{
+ int do_put;
+ aufs_bindex_t btop, bbot, bindex;
+
+ do_put = 0;
+ btop = au_ibtop(inode);
+ bbot = au_ibbot(inode);
+ if (btop >= 0) {
+ for (bindex = btop; bindex <= bbot; bindex++) {
+ if (!au_h_iptr(inode, bindex)
+ || au_ii_br_id(inode, bindex) != br_id)
+ continue;
+ au_set_h_iptr(inode, bindex, NULL, 0);
+ do_put = 1;
+ break;
+ }
+ if (do_put)
+ for (bindex = btop; bindex <= bbot; bindex++)
+ if (au_h_iptr(inode, bindex)) {
+ do_put = 0;
+ break;
+ }
+ } else
+ do_put = 1;
+
+ return do_put;
+}
+
+/* free the plinks on a branch specified by @br_id */
+void au_plink_half_refresh(struct super_block *sb, aufs_bindex_t br_id)
+{
+ struct au_sbinfo *sbinfo;
+ struct hlist_bl_head *hbl;
+ struct hlist_bl_node *pos, *tmp;
+ struct au_icntnr *icntnr;
+ struct inode *inode;
+ int i, do_put;
+
+ SiMustWriteLock(sb);
+
+ sbinfo = au_sbi(sb);
+ AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK));
+ AuDebugOn(au_plink_maint(sb, AuLock_NOPLM));
+
+ /* no bit_lock since sbinfo is write-locked */
+ for (i = 0; i < AuPlink_NHASH; i++) {
+ hbl = sbinfo->si_plink + i;
+ hlist_bl_for_each_entry_safe(icntnr, pos, tmp, hbl, plink) {
+ inode = au_igrab(&icntnr->vfs_inode);
+ ii_write_lock_child(inode);
+ do_put = au_plink_do_half_refresh(inode, br_id);
+ if (do_put) {
+ hlist_bl_del(&icntnr->plink);
+ iput(inode);
+ }
+ ii_write_unlock(inode);
+ iput(inode);
+ }
+ }
+}
diff --git a/fs/aufs/poll.c b/fs/aufs/poll.c
new file mode 100644
index 0000000000..c48c6cb649
--- /dev/null
+++ b/fs/aufs/poll.c
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * poll operation
+ * There is only one filesystem which implements ->poll operation, currently.
+ */
+
+#include "aufs.h"
+
+__poll_t aufs_poll(struct file *file, struct poll_table_struct *pt)
+{
+ __poll_t mask;
+ struct file *h_file;
+ struct super_block *sb;
+
+ /* We should pretend an error happened. */
+ mask = EPOLLERR /* | EPOLLIN | EPOLLOUT */;
+ sb = file->f_path.dentry->d_sb;
+ si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
+
+ h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0);
+ if (IS_ERR(h_file)) {
+ AuDbg("h_file %ld\n", PTR_ERR(h_file));
+ goto out;
+ }
+
+ mask = vfs_poll(h_file, pt);
+ fput(h_file); /* instead of au_read_post() */
+
+out:
+ si_read_unlock(sb);
+ if (mask & EPOLLERR)
+ AuDbg("mask 0x%x\n", mask);
+ return mask;
+}
diff --git a/fs/aufs/posix_acl.c b/fs/aufs/posix_acl.c
new file mode 100644
index 0000000000..67a4bbffdf
--- /dev/null
+++ b/fs/aufs/posix_acl.c
@@ -0,0 +1,103 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2014-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * posix acl operations
+ */
+
+#include <linux/fs.h>
+#include "aufs.h"
+
+struct posix_acl *aufs_get_acl(struct inode *inode, int type)
+{
+ struct posix_acl *acl;
+ int err;
+ aufs_bindex_t bindex;
+ struct inode *h_inode;
+ struct super_block *sb;
+
+ acl = NULL;
+ sb = inode->i_sb;
+ si_read_lock(sb, AuLock_FLUSH);
+ ii_read_lock_child(inode);
+ if (!(sb->s_flags & SB_POSIXACL))
+ goto out;
+
+ bindex = au_ibtop(inode);
+ h_inode = au_h_iptr(inode, bindex);
+ if (unlikely(!h_inode
+ || ((h_inode->i_mode & S_IFMT)
+ != (inode->i_mode & S_IFMT)))) {
+ err = au_busy_or_stale();
+ acl = ERR_PTR(err);
+ goto out;
+ }
+
+ /* always topmost only */
+ acl = get_acl(h_inode, type);
+ if (!IS_ERR_OR_NULL(acl))
+ set_cached_acl(inode, type, acl);
+
+out:
+ ii_read_unlock(inode);
+ si_read_unlock(sb);
+
+ AuTraceErrPtr(acl);
+ return acl;
+}
+
+int aufs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+{
+ int err;
+ ssize_t ssz;
+ struct dentry *dentry;
+ struct au_sxattr arg = {
+ .type = AU_ACL_SET,
+ .u.acl_set = {
+ .acl = acl,
+ .type = type
+ },
+ };
+
+ IMustLock(inode);
+
+ if (inode->i_ino == AUFS_ROOT_INO)
+ dentry = dget(inode->i_sb->s_root);
+ else {
+ dentry = d_find_alias(inode);
+ if (!dentry)
+ dentry = d_find_any_alias(inode);
+ if (!dentry) {
+ pr_warn("cannot handle this inode, "
+ "please report to aufs-users ML\n");
+ err = -ENOENT;
+ goto out;
+ }
+ }
+
+ ssz = au_sxattr(dentry, inode, &arg);
+ dput(dentry);
+ err = ssz;
+ if (ssz >= 0) {
+ err = 0;
+ set_cached_acl(inode, type, acl);
+ }
+
+out:
+ return err;
+}
diff --git a/fs/aufs/procfs.c b/fs/aufs/procfs.c
new file mode 100644
index 0000000000..582dd486fc
--- /dev/null
+++ b/fs/aufs/procfs.c
@@ -0,0 +1,171 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2010-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * procfs interfaces
+ */
+
+#include <linux/proc_fs.h>
+#include "aufs.h"
+
+static int au_procfs_plm_release(struct inode *inode, struct file *file)
+{
+ struct au_sbinfo *sbinfo;
+
+ sbinfo = file->private_data;
+ if (sbinfo) {
+ au_plink_maint_leave(sbinfo);
+ kobject_put(&sbinfo->si_kobj);
+ }
+
+ return 0;
+}
+
+static void au_procfs_plm_write_clean(struct file *file)
+{
+ struct au_sbinfo *sbinfo;
+
+ sbinfo = file->private_data;
+ if (sbinfo)
+ au_plink_clean(sbinfo->si_sb, /*verbose*/0);
+}
+
+static int au_procfs_plm_write_si(struct file *file, unsigned long id)
+{
+ int err;
+ struct super_block *sb;
+ struct au_sbinfo *sbinfo;
+ struct hlist_bl_node *pos;
+
+ err = -EBUSY;
+ if (unlikely(file->private_data))
+ goto out;
+
+ sb = NULL;
+ /* don't use au_sbilist_lock() here */
+ hlist_bl_lock(&au_sbilist);
+ hlist_bl_for_each_entry(sbinfo, pos, &au_sbilist, si_list)
+ if (id == sysaufs_si_id(sbinfo)) {
+ if (kobject_get_unless_zero(&sbinfo->si_kobj))
+ sb = sbinfo->si_sb;
+ break;
+ }
+ hlist_bl_unlock(&au_sbilist);
+
+ err = -EINVAL;
+ if (unlikely(!sb))
+ goto out;
+
+ err = au_plink_maint_enter(sb);
+ if (!err)
+ /* keep kobject_get() */
+ file->private_data = sbinfo;
+ else
+ kobject_put(&sbinfo->si_kobj);
+out:
+ return err;
+}
+
+/*
+ * Accept a valid "si=xxxx" only.
+ * Once it is accepted successfully, accept "clean" too.
+ */
+static ssize_t au_procfs_plm_write(struct file *file, const char __user *ubuf,
+ size_t count, loff_t *ppos)
+{
+ ssize_t err;
+ unsigned long id;
+ /* last newline is allowed */
+ char buf[3 + sizeof(unsigned long) * 2 + 1];
+
+ err = -EACCES;
+ if (unlikely(!capable(CAP_SYS_ADMIN)))
+ goto out;
+
+ err = -EINVAL;
+ if (unlikely(count > sizeof(buf)))
+ goto out;
+
+ err = copy_from_user(buf, ubuf, count);
+ if (unlikely(err)) {
+ err = -EFAULT;
+ goto out;
+ }
+ buf[count] = 0;
+
+ err = -EINVAL;
+ if (!strcmp("clean", buf)) {
+ au_procfs_plm_write_clean(file);
+ goto out_success;
+ } else if (unlikely(strncmp("si=", buf, 3)))
+ goto out;
+
+ err = kstrtoul(buf + 3, 16, &id);
+ if (unlikely(err))
+ goto out;
+
+ err = au_procfs_plm_write_si(file, id);
+ if (unlikely(err))
+ goto out;
+
+out_success:
+ err = count; /* success */
+out:
+ return err;
+}
+
+static const struct file_operations au_procfs_plm_fop = {
+ .write = au_procfs_plm_write,
+ .release = au_procfs_plm_release,
+ .owner = THIS_MODULE
+};
+
+/* ---------------------------------------------------------------------- */
+
+static struct proc_dir_entry *au_procfs_dir;
+
+void au_procfs_fin(void)
+{
+ remove_proc_entry(AUFS_PLINK_MAINT_NAME, au_procfs_dir);
+ remove_proc_entry(AUFS_PLINK_MAINT_DIR, NULL);
+}
+
+int __init au_procfs_init(void)
+{
+ int err;
+ struct proc_dir_entry *entry;
+
+ err = -ENOMEM;
+ au_procfs_dir = proc_mkdir(AUFS_PLINK_MAINT_DIR, NULL);
+ if (unlikely(!au_procfs_dir))
+ goto out;
+
+ entry = proc_create(AUFS_PLINK_MAINT_NAME, S_IFREG | 0200,
+ au_procfs_dir, &au_procfs_plm_fop);
+ if (unlikely(!entry))
+ goto out_dir;
+
+ err = 0;
+ goto out; /* success */
+
+
+out_dir:
+ remove_proc_entry(AUFS_PLINK_MAINT_DIR, NULL);
+out:
+ return err;
+}
diff --git a/fs/aufs/rdu.c b/fs/aufs/rdu.c
new file mode 100644
index 0000000000..3805e79627
--- /dev/null
+++ b/fs/aufs/rdu.c
@@ -0,0 +1,384 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * readdir in userspace.
+ */
+
+#include <linux/compat.h>
+#include <linux/fs_stack.h>
+#include <linux/security.h>
+#include "aufs.h"
+
+/* bits for struct aufs_rdu.flags */
+#define AuRdu_CALLED 1
+#define AuRdu_CONT (1 << 1)
+#define AuRdu_FULL (1 << 2)
+#define au_ftest_rdu(flags, name) ((flags) & AuRdu_##name)
+#define au_fset_rdu(flags, name) \
+ do { (flags) |= AuRdu_##name; } while (0)
+#define au_fclr_rdu(flags, name) \
+ do { (flags) &= ~AuRdu_##name; } while (0)
+
+struct au_rdu_arg {
+ struct dir_context ctx;
+ struct aufs_rdu *rdu;
+ union au_rdu_ent_ul ent;
+ unsigned long end;
+
+ struct super_block *sb;
+ int err;
+};
+
+static int au_rdu_fill(struct dir_context *ctx, const char *name, int nlen,
+ loff_t offset, u64 h_ino, unsigned int d_type)
+{
+ int err, len;
+ struct au_rdu_arg *arg = container_of(ctx, struct au_rdu_arg, ctx);
+ struct aufs_rdu *rdu = arg->rdu;
+ struct au_rdu_ent ent;
+
+ err = 0;
+ arg->err = 0;
+ au_fset_rdu(rdu->cookie.flags, CALLED);
+ len = au_rdu_len(nlen);
+ if (arg->ent.ul + len < arg->end) {
+ ent.ino = h_ino;
+ ent.bindex = rdu->cookie.bindex;
+ ent.type = d_type;
+ ent.nlen = nlen;
+ if (unlikely(nlen > AUFS_MAX_NAMELEN))
+ ent.type = DT_UNKNOWN;
+
+ /* unnecessary to support mmap_sem since this is a dir */
+ err = -EFAULT;
+ if (copy_to_user(arg->ent.e, &ent, sizeof(ent)))
+ goto out;
+ if (copy_to_user(arg->ent.e->name, name, nlen))
+ goto out;
+ /* the terminating NULL */
+ if (__put_user(0, arg->ent.e->name + nlen))
+ goto out;
+ err = 0;
+ /* AuDbg("%p, %.*s\n", arg->ent.p, nlen, name); */
+ arg->ent.ul += len;
+ rdu->rent++;
+ } else {
+ err = -EFAULT;
+ au_fset_rdu(rdu->cookie.flags, FULL);
+ rdu->full = 1;
+ rdu->tail = arg->ent;
+ }
+
+out:
+ /* AuTraceErr(err); */
+ return err;
+}
+
+static int au_rdu_do(struct file *h_file, struct au_rdu_arg *arg)
+{
+ int err;
+ loff_t offset;
+ struct au_rdu_cookie *cookie = &arg->rdu->cookie;
+
+ /* we don't have to care (FMODE_32BITHASH | FMODE_64BITHASH) for ext4 */
+ offset = vfsub_llseek(h_file, cookie->h_pos, SEEK_SET);
+ err = offset;
+ if (unlikely(offset != cookie->h_pos))
+ goto out;
+
+ err = 0;
+ do {
+ arg->err = 0;
+ au_fclr_rdu(cookie->flags, CALLED);
+ /* smp_mb(); */
+ err = vfsub_iterate_dir(h_file, &arg->ctx);
+ if (err >= 0)
+ err = arg->err;
+ } while (!err
+ && au_ftest_rdu(cookie->flags, CALLED)
+ && !au_ftest_rdu(cookie->flags, FULL));
+ cookie->h_pos = h_file->f_pos;
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+static int au_rdu(struct file *file, struct aufs_rdu *rdu)
+{
+ int err;
+ aufs_bindex_t bbot;
+ struct au_rdu_arg arg = {
+ .ctx = {
+ .actor = au_rdu_fill
+ }
+ };
+ struct dentry *dentry;
+ struct inode *inode;
+ struct file *h_file;
+ struct au_rdu_cookie *cookie = &rdu->cookie;
+
+ /* VERIFY_WRITE */
+ err = !access_ok(rdu->ent.e, rdu->sz);
+ if (unlikely(err)) {
+ err = -EFAULT;
+ AuTraceErr(err);
+ goto out;
+ }
+ rdu->rent = 0;
+ rdu->tail = rdu->ent;
+ rdu->full = 0;
+ arg.rdu = rdu;
+ arg.ent = rdu->ent;
+ arg.end = arg.ent.ul;
+ arg.end += rdu->sz;
+
+ err = -ENOTDIR;
+ if (unlikely(!file->f_op->iterate && !file->f_op->iterate_shared))
+ goto out;
+
+ err = security_file_permission(file, MAY_READ);
+ AuTraceErr(err);
+ if (unlikely(err))
+ goto out;
+
+ dentry = file->f_path.dentry;
+ inode = d_inode(dentry);
+ inode_lock_shared(inode);
+
+ arg.sb = inode->i_sb;
+ err = si_read_lock(arg.sb, AuLock_FLUSH | AuLock_NOPLM);
+ if (unlikely(err))
+ goto out_mtx;
+ err = au_alive_dir(dentry);
+ if (unlikely(err))
+ goto out_si;
+ /* todo: reval? */
+ fi_read_lock(file);
+
+ err = -EAGAIN;
+ if (unlikely(au_ftest_rdu(cookie->flags, CONT)
+ && cookie->generation != au_figen(file)))
+ goto out_unlock;
+
+ err = 0;
+ if (!rdu->blk) {
+ rdu->blk = au_sbi(arg.sb)->si_rdblk;
+ if (!rdu->blk)
+ rdu->blk = au_dir_size(file, /*dentry*/NULL);
+ }
+ bbot = au_fbtop(file);
+ if (cookie->bindex < bbot)
+ cookie->bindex = bbot;
+ bbot = au_fbbot_dir(file);
+ /* AuDbg("b%d, b%d\n", cookie->bindex, bbot); */
+ for (; !err && cookie->bindex <= bbot;
+ cookie->bindex++, cookie->h_pos = 0) {
+ h_file = au_hf_dir(file, cookie->bindex);
+ if (!h_file)
+ continue;
+
+ au_fclr_rdu(cookie->flags, FULL);
+ err = au_rdu_do(h_file, &arg);
+ AuTraceErr(err);
+ if (unlikely(au_ftest_rdu(cookie->flags, FULL) || err))
+ break;
+ }
+ AuDbg("rent %llu\n", rdu->rent);
+
+ if (!err && !au_ftest_rdu(cookie->flags, CONT)) {
+ rdu->shwh = !!au_opt_test(au_sbi(arg.sb)->si_mntflags, SHWH);
+ au_fset_rdu(cookie->flags, CONT);
+ cookie->generation = au_figen(file);
+ }
+
+ ii_read_lock_child(inode);
+ fsstack_copy_attr_atime(inode, au_h_iptr(inode, au_ibtop(inode)));
+ ii_read_unlock(inode);
+
+out_unlock:
+ fi_read_unlock(file);
+out_si:
+ si_read_unlock(arg.sb);
+out_mtx:
+ inode_unlock_shared(inode);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+static int au_rdu_ino(struct file *file, struct aufs_rdu *rdu)
+{
+ int err;
+ ino_t ino;
+ unsigned long long nent;
+ union au_rdu_ent_ul *u;
+ struct au_rdu_ent ent;
+ struct super_block *sb;
+
+ err = 0;
+ nent = rdu->nent;
+ u = &rdu->ent;
+ sb = file->f_path.dentry->d_sb;
+ si_read_lock(sb, AuLock_FLUSH);
+ while (nent-- > 0) {
+ /* unnecessary to support mmap_sem since this is a dir */
+ err = copy_from_user(&ent, u->e, sizeof(ent));
+ if (!err)
+ /* VERIFY_WRITE */
+ err = !access_ok(&u->e->ino, sizeof(ino));
+ if (unlikely(err)) {
+ err = -EFAULT;
+ AuTraceErr(err);
+ break;
+ }
+
+ /* AuDbg("b%d, i%llu\n", ent.bindex, ent.ino); */
+ if (!ent.wh)
+ err = au_ino(sb, ent.bindex, ent.ino, ent.type, &ino);
+ else
+ err = au_wh_ino(sb, ent.bindex, ent.ino, ent.type,
+ &ino);
+ if (unlikely(err)) {
+ AuTraceErr(err);
+ break;
+ }
+
+ err = __put_user(ino, &u->e->ino);
+ if (unlikely(err)) {
+ err = -EFAULT;
+ AuTraceErr(err);
+ break;
+ }
+ u->ul += au_rdu_len(ent.nlen);
+ }
+ si_read_unlock(sb);
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_rdu_verify(struct aufs_rdu *rdu)
+{
+ AuDbg("rdu{%llu, %p, %u | %u | %llu, %u, %u | "
+ "%llu, b%d, 0x%x, g%u}\n",
+ rdu->sz, rdu->ent.e, rdu->verify[AufsCtlRduV_SZ],
+ rdu->blk,
+ rdu->rent, rdu->shwh, rdu->full,
+ rdu->cookie.h_pos, rdu->cookie.bindex, rdu->cookie.flags,
+ rdu->cookie.generation);
+
+ if (rdu->verify[AufsCtlRduV_SZ] == sizeof(*rdu))
+ return 0;
+
+ AuDbg("%u:%u\n",
+ rdu->verify[AufsCtlRduV_SZ], (unsigned int)sizeof(*rdu));
+ return -EINVAL;
+}
+
+long au_rdu_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ long err, e;
+ struct aufs_rdu rdu;
+ void __user *p = (void __user *)arg;
+
+ err = copy_from_user(&rdu, p, sizeof(rdu));
+ if (unlikely(err)) {
+ err = -EFAULT;
+ AuTraceErr(err);
+ goto out;
+ }
+ err = au_rdu_verify(&rdu);
+ if (unlikely(err))
+ goto out;
+
+ switch (cmd) {
+ case AUFS_CTL_RDU:
+ err = au_rdu(file, &rdu);
+ if (unlikely(err))
+ break;
+
+ e = copy_to_user(p, &rdu, sizeof(rdu));
+ if (unlikely(e)) {
+ err = -EFAULT;
+ AuTraceErr(err);
+ }
+ break;
+ case AUFS_CTL_RDU_INO:
+ err = au_rdu_ino(file, &rdu);
+ break;
+
+ default:
+ /* err = -ENOTTY; */
+ err = -EINVAL;
+ }
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+#ifdef CONFIG_COMPAT
+long au_rdu_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ long err, e;
+ struct aufs_rdu rdu;
+ void __user *p = compat_ptr(arg);
+
+ /* todo: get_user()? */
+ err = copy_from_user(&rdu, p, sizeof(rdu));
+ if (unlikely(err)) {
+ err = -EFAULT;
+ AuTraceErr(err);
+ goto out;
+ }
+ rdu.ent.e = compat_ptr(rdu.ent.ul);
+ err = au_rdu_verify(&rdu);
+ if (unlikely(err))
+ goto out;
+
+ switch (cmd) {
+ case AUFS_CTL_RDU:
+ err = au_rdu(file, &rdu);
+ if (unlikely(err))
+ break;
+
+ rdu.ent.ul = ptr_to_compat(rdu.ent.e);
+ rdu.tail.ul = ptr_to_compat(rdu.tail.e);
+ e = copy_to_user(p, &rdu, sizeof(rdu));
+ if (unlikely(e)) {
+ err = -EFAULT;
+ AuTraceErr(err);
+ }
+ break;
+ case AUFS_CTL_RDU_INO:
+ err = au_rdu_ino(file, &rdu);
+ break;
+
+ default:
+ /* err = -ENOTTY; */
+ err = -EINVAL;
+ }
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+#endif
diff --git a/fs/aufs/rwsem.h b/fs/aufs/rwsem.h
new file mode 100644
index 0000000000..2f8988fa1b
--- /dev/null
+++ b/fs/aufs/rwsem.h
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * simple read-write semaphore wrappers
+ */
+
+#ifndef __AUFS_RWSEM_H__
+#define __AUFS_RWSEM_H__
+
+#ifdef __KERNEL__
+
+#include "debug.h"
+
+/* in the future, the name 'au_rwsem' will be totally gone */
+#define au_rwsem rw_semaphore
+
+/* to debug easier, do not make them inlined functions */
+#define AuRwMustNoWaiters(rw) AuDebugOn(rwsem_is_contended(rw))
+/* rwsem_is_locked() is unusable */
+#define AuRwMustReadLock(rw) AuDebugOn(!lockdep_recursing(current) \
+ && debug_locks \
+ && !lockdep_is_held_type(rw, 1))
+#define AuRwMustWriteLock(rw) AuDebugOn(!lockdep_recursing(current) \
+ && debug_locks \
+ && !lockdep_is_held_type(rw, 0))
+#define AuRwMustAnyLock(rw) AuDebugOn(!lockdep_recursing(current) \
+ && debug_locks \
+ && !lockdep_is_held(rw))
+#define AuRwDestroy(rw) AuDebugOn(!lockdep_recursing(current) \
+ && debug_locks \
+ && lockdep_is_held(rw))
+
+#define au_rw_init(rw) init_rwsem(rw)
+
+#define au_rw_init_wlock(rw) do { \
+ au_rw_init(rw); \
+ down_write(rw); \
+ } while (0)
+
+#define au_rw_init_wlock_nested(rw, lsc) do { \
+ au_rw_init(rw); \
+ down_write_nested(rw, lsc); \
+ } while (0)
+
+#define au_rw_read_lock(rw) down_read(rw)
+#define au_rw_read_lock_nested(rw, lsc) down_read_nested(rw, lsc)
+#define au_rw_read_unlock(rw) up_read(rw)
+#define au_rw_dgrade_lock(rw) downgrade_write(rw)
+#define au_rw_write_lock(rw) down_write(rw)
+#define au_rw_write_lock_nested(rw, lsc) down_write_nested(rw, lsc)
+#define au_rw_write_unlock(rw) up_write(rw)
+/* why is not _nested version defined? */
+#define au_rw_read_trylock(rw) down_read_trylock(rw)
+#define au_rw_write_trylock(rw) down_write_trylock(rw)
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_RWSEM_H__ */
diff --git a/fs/aufs/sbinfo.c b/fs/aufs/sbinfo.c
new file mode 100644
index 0000000000..500a920b4e
--- /dev/null
+++ b/fs/aufs/sbinfo.c
@@ -0,0 +1,314 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * superblock private data
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+/*
+ * they are necessary regardless sysfs is disabled.
+ */
+void au_si_free(struct kobject *kobj)
+{
+ int i;
+ struct au_sbinfo *sbinfo;
+ char *locked __maybe_unused; /* debug only */
+
+ sbinfo = container_of(kobj, struct au_sbinfo, si_kobj);
+ for (i = 0; i < AuPlink_NHASH; i++)
+ AuDebugOn(!hlist_bl_empty(sbinfo->si_plink + i));
+ AuDebugOn(atomic_read(&sbinfo->si_nowait.nw_len));
+
+ AuLCntZero(au_lcnt_read(&sbinfo->si_ninodes, /*do_rev*/0));
+ au_lcnt_fin(&sbinfo->si_ninodes, /*do_sync*/0);
+ AuLCntZero(au_lcnt_read(&sbinfo->si_nfiles, /*do_rev*/0));
+ au_lcnt_fin(&sbinfo->si_nfiles, /*do_sync*/0);
+
+ dbgaufs_si_fin(sbinfo);
+ au_rw_write_lock(&sbinfo->si_rwsem);
+ au_br_free(sbinfo);
+ au_rw_write_unlock(&sbinfo->si_rwsem);
+
+ au_kfree_try_rcu(sbinfo->si_branch);
+ mutex_destroy(&sbinfo->si_xib_mtx);
+ AuRwDestroy(&sbinfo->si_rwsem);
+
+ au_lcnt_wait_for_fin(&sbinfo->si_ninodes);
+ /* si_nfiles is waited too */
+ au_kfree_rcu(sbinfo);
+}
+
+int au_si_alloc(struct super_block *sb)
+{
+ int err, i;
+ struct au_sbinfo *sbinfo;
+
+ err = -ENOMEM;
+ sbinfo = kzalloc(sizeof(*sbinfo), GFP_NOFS);
+ if (unlikely(!sbinfo))
+ goto out;
+
+ /* will be reallocated separately */
+ sbinfo->si_branch = kzalloc(sizeof(*sbinfo->si_branch), GFP_NOFS);
+ if (unlikely(!sbinfo->si_branch))
+ goto out_sbinfo;
+
+ err = sysaufs_si_init(sbinfo);
+ if (!err) {
+ dbgaufs_si_null(sbinfo);
+ err = dbgaufs_si_init(sbinfo);
+ if (unlikely(err))
+ kobject_put(&sbinfo->si_kobj);
+ }
+ if (unlikely(err))
+ goto out_br;
+
+ au_nwt_init(&sbinfo->si_nowait);
+ au_rw_init_wlock(&sbinfo->si_rwsem);
+
+ au_lcnt_init(&sbinfo->si_ninodes, /*release*/NULL);
+ au_lcnt_init(&sbinfo->si_nfiles, /*release*/NULL);
+
+ sbinfo->si_bbot = -1;
+ sbinfo->si_last_br_id = AUFS_BRANCH_MAX / 2;
+
+ sbinfo->si_wbr_copyup = AuWbrCopyup_Def;
+ sbinfo->si_wbr_create = AuWbrCreate_Def;
+ sbinfo->si_wbr_copyup_ops = au_wbr_copyup_ops + sbinfo->si_wbr_copyup;
+ sbinfo->si_wbr_create_ops = au_wbr_create_ops + sbinfo->si_wbr_create;
+
+ au_fhsm_init(sbinfo);
+
+ sbinfo->si_mntflags = au_opts_plink(AuOpt_Def);
+
+ sbinfo->si_xino_jiffy = jiffies;
+ sbinfo->si_xino_expire
+ = msecs_to_jiffies(AUFS_XINO_DEF_SEC * MSEC_PER_SEC);
+ mutex_init(&sbinfo->si_xib_mtx);
+ /* leave si_xib_last_pindex and si_xib_next_bit */
+
+ INIT_HLIST_BL_HEAD(&sbinfo->si_aopen);
+
+ sbinfo->si_rdcache = msecs_to_jiffies(AUFS_RDCACHE_DEF * MSEC_PER_SEC);
+ sbinfo->si_rdblk = AUFS_RDBLK_DEF;
+ sbinfo->si_rdhash = AUFS_RDHASH_DEF;
+ sbinfo->si_dirwh = AUFS_DIRWH_DEF;
+
+ for (i = 0; i < AuPlink_NHASH; i++)
+ INIT_HLIST_BL_HEAD(sbinfo->si_plink + i);
+ init_waitqueue_head(&sbinfo->si_plink_wq);
+ spin_lock_init(&sbinfo->si_plink_maint_lock);
+
+ INIT_HLIST_BL_HEAD(&sbinfo->si_files);
+
+ /* with getattr by default */
+ sbinfo->si_iop_array = aufs_iop;
+
+ /* leave other members for sysaufs and si_mnt. */
+ sbinfo->si_sb = sb;
+ sb->s_fs_info = sbinfo;
+ si_pid_set(sb);
+ return 0; /* success */
+
+out_br:
+ au_kfree_try_rcu(sbinfo->si_branch);
+out_sbinfo:
+ au_kfree_rcu(sbinfo);
+out:
+ return err;
+}
+
+int au_sbr_realloc(struct au_sbinfo *sbinfo, int nbr, int may_shrink)
+{
+ int err, sz;
+ struct au_branch **brp;
+
+ AuRwMustWriteLock(&sbinfo->si_rwsem);
+
+ err = -ENOMEM;
+ sz = sizeof(*brp) * (sbinfo->si_bbot + 1);
+ if (unlikely(!sz))
+ sz = sizeof(*brp);
+ brp = au_kzrealloc(sbinfo->si_branch, sz, sizeof(*brp) * nbr, GFP_NOFS,
+ may_shrink);
+ if (brp) {
+ sbinfo->si_branch = brp;
+ err = 0;
+ }
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+unsigned int au_sigen_inc(struct super_block *sb)
+{
+ unsigned int gen;
+ struct inode *inode;
+
+ SiMustWriteLock(sb);
+
+ gen = ++au_sbi(sb)->si_generation;
+ au_update_digen(sb->s_root);
+ inode = d_inode(sb->s_root);
+ au_update_iigen(inode, /*half*/0);
+ inode_inc_iversion(inode);
+ return gen;
+}
+
+aufs_bindex_t au_new_br_id(struct super_block *sb)
+{
+ aufs_bindex_t br_id;
+ int i;
+ struct au_sbinfo *sbinfo;
+
+ SiMustWriteLock(sb);
+
+ sbinfo = au_sbi(sb);
+ for (i = 0; i <= AUFS_BRANCH_MAX; i++) {
+ br_id = ++sbinfo->si_last_br_id;
+ AuDebugOn(br_id < 0);
+ if (br_id && au_br_index(sb, br_id) < 0)
+ return br_id;
+ }
+
+ return -1;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* it is ok that new 'nwt' tasks are appended while we are sleeping */
+int si_read_lock(struct super_block *sb, int flags)
+{
+ int err;
+
+ err = 0;
+ if (au_ftest_lock(flags, FLUSH))
+ au_nwt_flush(&au_sbi(sb)->si_nowait);
+
+ si_noflush_read_lock(sb);
+ err = au_plink_maint(sb, flags);
+ if (unlikely(err))
+ si_read_unlock(sb);
+
+ return err;
+}
+
+int si_write_lock(struct super_block *sb, int flags)
+{
+ int err;
+
+ if (au_ftest_lock(flags, FLUSH))
+ au_nwt_flush(&au_sbi(sb)->si_nowait);
+
+ si_noflush_write_lock(sb);
+ err = au_plink_maint(sb, flags);
+ if (unlikely(err))
+ si_write_unlock(sb);
+
+ return err;
+}
+
+/* dentry and super_block lock. call at entry point */
+int aufs_read_lock(struct dentry *dentry, int flags)
+{
+ int err;
+ struct super_block *sb;
+
+ sb = dentry->d_sb;
+ err = si_read_lock(sb, flags);
+ if (unlikely(err))
+ goto out;
+
+ if (au_ftest_lock(flags, DW))
+ di_write_lock_child(dentry);
+ else
+ di_read_lock_child(dentry, flags);
+
+ if (au_ftest_lock(flags, GEN)) {
+ err = au_digen_test(dentry, au_sigen(sb));
+ if (!au_opt_test(au_mntflags(sb), UDBA_NONE))
+ AuDebugOn(!err && au_dbrange_test(dentry));
+ else if (!err)
+ err = au_dbrange_test(dentry);
+ if (unlikely(err))
+ aufs_read_unlock(dentry, flags);
+ }
+
+out:
+ return err;
+}
+
+void aufs_read_unlock(struct dentry *dentry, int flags)
+{
+ if (au_ftest_lock(flags, DW))
+ di_write_unlock(dentry);
+ else
+ di_read_unlock(dentry, flags);
+ si_read_unlock(dentry->d_sb);
+}
+
+void aufs_write_lock(struct dentry *dentry)
+{
+ si_write_lock(dentry->d_sb, AuLock_FLUSH | AuLock_NOPLMW);
+ di_write_lock_child(dentry);
+}
+
+void aufs_write_unlock(struct dentry *dentry)
+{
+ di_write_unlock(dentry);
+ si_write_unlock(dentry->d_sb);
+}
+
+int aufs_read_and_write_lock2(struct dentry *d1, struct dentry *d2, int flags)
+{
+ int err;
+ unsigned int sigen;
+ struct super_block *sb;
+
+ sb = d1->d_sb;
+ err = si_read_lock(sb, flags);
+ if (unlikely(err))
+ goto out;
+
+ di_write_lock2_child(d1, d2, au_ftest_lock(flags, DIRS));
+
+ if (au_ftest_lock(flags, GEN)) {
+ sigen = au_sigen(sb);
+ err = au_digen_test(d1, sigen);
+ AuDebugOn(!err && au_dbrange_test(d1));
+ if (!err) {
+ err = au_digen_test(d2, sigen);
+ AuDebugOn(!err && au_dbrange_test(d2));
+ }
+ if (unlikely(err))
+ aufs_read_and_write_unlock2(d1, d2);
+ }
+
+out:
+ return err;
+}
+
+void aufs_read_and_write_unlock2(struct dentry *d1, struct dentry *d2)
+{
+ di_write_unlock2(d1, d2);
+ si_read_unlock(d1->d_sb);
+}
diff --git a/fs/aufs/super.c b/fs/aufs/super.c
new file mode 100644
index 0000000000..44ee4685b2
--- /dev/null
+++ b/fs/aufs/super.c
@@ -0,0 +1,1047 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * mount and super_block operations
+ */
+
+#include <linux/iversion.h>
+#include <linux/mm.h>
+#include <linux/seq_file.h>
+#include <linux/statfs.h>
+#include <linux/vmalloc.h>
+#include "aufs.h"
+
+/*
+ * super_operations
+ */
+static struct inode *aufs_alloc_inode(struct super_block *sb __maybe_unused)
+{
+ struct au_icntnr *c;
+
+ c = au_cache_alloc_icntnr();
+ if (c) {
+ au_icntnr_init(c);
+ inode_set_iversion(&c->vfs_inode, 1); /* sigen(sb); */
+ c->iinfo.ii_hinode = NULL;
+ return &c->vfs_inode;
+ }
+ return NULL;
+}
+
+static void aufs_destroy_inode(struct inode *inode)
+{
+ if (!au_is_bad_inode(inode))
+ au_iinfo_fin(inode);
+}
+
+static void aufs_free_inode(struct inode *inode)
+{
+ au_cache_free_icntnr(container_of(inode, struct au_icntnr, vfs_inode));
+}
+
+struct inode *au_iget_locked(struct super_block *sb, ino_t ino)
+{
+ struct inode *inode;
+ int err;
+
+ inode = iget_locked(sb, ino);
+ if (unlikely(!inode)) {
+ inode = ERR_PTR(-ENOMEM);
+ goto out;
+ }
+ if (!(inode->i_state & I_NEW))
+ goto out;
+
+ err = au_xigen_new(inode);
+ if (!err)
+ err = au_iinfo_init(inode);
+ if (!err)
+ inode_inc_iversion(inode);
+ else {
+ iget_failed(inode);
+ inode = ERR_PTR(err);
+ }
+
+out:
+ /* never return NULL */
+ AuDebugOn(!inode);
+ AuTraceErrPtr(inode);
+ return inode;
+}
+
+/* lock free root dinfo */
+static int au_show_brs(struct seq_file *seq, struct super_block *sb)
+{
+ int err;
+ aufs_bindex_t bindex, bbot;
+ struct path path;
+ struct au_hdentry *hdp;
+ struct au_branch *br;
+ au_br_perm_str_t perm;
+
+ err = 0;
+ bbot = au_sbbot(sb);
+ bindex = 0;
+ hdp = au_hdentry(au_di(sb->s_root), bindex);
+ for (; !err && bindex <= bbot; bindex++, hdp++) {
+ br = au_sbr(sb, bindex);
+ path.mnt = au_br_mnt(br);
+ path.dentry = hdp->hd_dentry;
+ err = au_seq_path(seq, &path);
+ if (!err) {
+ au_optstr_br_perm(&perm, br->br_perm);
+ seq_printf(seq, "=%s", perm.a);
+ if (bindex != bbot)
+ seq_putc(seq, ':');
+ }
+ }
+ if (unlikely(err || seq_has_overflowed(seq)))
+ err = -E2BIG;
+
+ return err;
+}
+
+static void au_gen_fmt(char *fmt, int len __maybe_unused, const char *pat,
+ const char *append)
+{
+ char *p;
+
+ p = fmt;
+ while (*pat != ':')
+ *p++ = *pat++;
+ *p++ = *pat++;
+ strcpy(p, append);
+ AuDebugOn(strlen(fmt) >= len);
+}
+
+static void au_show_wbr_create(struct seq_file *m, int v,
+ struct au_sbinfo *sbinfo)
+{
+ const char *pat;
+ char fmt[32];
+ struct au_wbr_mfs *mfs;
+
+ AuRwMustAnyLock(&sbinfo->si_rwsem);
+
+ seq_puts(m, ",create=");
+ pat = au_optstr_wbr_create(v);
+ mfs = &sbinfo->si_wbr_mfs;
+ switch (v) {
+ case AuWbrCreate_TDP:
+ case AuWbrCreate_RR:
+ case AuWbrCreate_MFS:
+ case AuWbrCreate_PMFS:
+ seq_puts(m, pat);
+ break;
+ case AuWbrCreate_MFSRR:
+ case AuWbrCreate_TDMFS:
+ case AuWbrCreate_PMFSRR:
+ au_gen_fmt(fmt, sizeof(fmt), pat, "%llu");
+ seq_printf(m, fmt, mfs->mfsrr_watermark);
+ break;
+ case AuWbrCreate_MFSV:
+ case AuWbrCreate_PMFSV:
+ au_gen_fmt(fmt, sizeof(fmt), pat, "%lu");
+ seq_printf(m, fmt,
+ jiffies_to_msecs(mfs->mfs_expire)
+ / MSEC_PER_SEC);
+ break;
+ case AuWbrCreate_MFSRRV:
+ case AuWbrCreate_TDMFSV:
+ case AuWbrCreate_PMFSRRV:
+ au_gen_fmt(fmt, sizeof(fmt), pat, "%llu:%lu");
+ seq_printf(m, fmt, mfs->mfsrr_watermark,
+ jiffies_to_msecs(mfs->mfs_expire) / MSEC_PER_SEC);
+ break;
+ default:
+ BUG();
+ }
+}
+
+static int au_show_xino(struct seq_file *seq, struct super_block *sb)
+{
+#ifdef CONFIG_SYSFS
+ return 0;
+#else
+ int err;
+ const int len = sizeof(AUFS_XINO_FNAME) - 1;
+ aufs_bindex_t bindex, brid;
+ struct qstr *name;
+ struct file *f;
+ struct dentry *d, *h_root;
+ struct au_branch *br;
+
+ AuRwMustAnyLock(&sbinfo->si_rwsem);
+
+ err = 0;
+ f = au_sbi(sb)->si_xib;
+ if (!f)
+ goto out;
+
+ /* stop printing the default xino path on the first writable branch */
+ h_root = NULL;
+ bindex = au_xi_root(sb, f->f_path.dentry);
+ if (bindex >= 0) {
+ br = au_sbr_sb(sb, bindex);
+ h_root = au_br_dentry(br);
+ }
+
+ d = f->f_path.dentry;
+ name = &d->d_name;
+ /* safe ->d_parent because the file is unlinked */
+ if (d->d_parent == h_root
+ && name->len == len
+ && !memcmp(name->name, AUFS_XINO_FNAME, len))
+ goto out;
+
+ seq_puts(seq, ",xino=");
+ err = au_xino_path(seq, f);
+
+out:
+ return err;
+#endif
+}
+
+/* seq_file will re-call me in case of too long string */
+static int aufs_show_options(struct seq_file *m, struct dentry *dentry)
+{
+ int err;
+ unsigned int mnt_flags, v;
+ struct super_block *sb;
+ struct au_sbinfo *sbinfo;
+
+#define AuBool(name, str) do { \
+ v = au_opt_test(mnt_flags, name); \
+ if (v != au_opt_test(AuOpt_Def, name)) \
+ seq_printf(m, ",%s" #str, v ? "" : "no"); \
+} while (0)
+
+#define AuStr(name, str) do { \
+ v = mnt_flags & AuOptMask_##name; \
+ if (v != (AuOpt_Def & AuOptMask_##name)) \
+ seq_printf(m, "," #str "=%s", au_optstr_##str(v)); \
+} while (0)
+
+#define AuUInt(name, str, val) do { \
+ if (val != AUFS_##name##_DEF) \
+ seq_printf(m, "," #str "=%u", val); \
+} while (0)
+
+ sb = dentry->d_sb;
+ if (sb->s_flags & SB_POSIXACL)
+ seq_puts(m, ",acl");
+#if 0
+ if (sb->s_flags & SB_I_VERSION)
+ seq_puts(m, ",i_version");
+#endif
+
+ /* lock free root dinfo */
+ si_noflush_read_lock(sb);
+ sbinfo = au_sbi(sb);
+ seq_printf(m, ",si=%lx", sysaufs_si_id(sbinfo));
+
+ mnt_flags = au_mntflags(sb);
+ if (au_opt_test(mnt_flags, XINO)) {
+ err = au_show_xino(m, sb);
+ if (unlikely(err))
+ goto out;
+ } else
+ seq_puts(m, ",noxino");
+
+ AuBool(TRUNC_XINO, trunc_xino);
+ AuStr(UDBA, udba);
+ AuBool(SHWH, shwh);
+ AuBool(PLINK, plink);
+ AuBool(DIO, dio);
+ AuBool(DIRPERM1, dirperm1);
+
+ v = sbinfo->si_wbr_create;
+ if (v != AuWbrCreate_Def)
+ au_show_wbr_create(m, v, sbinfo);
+
+ v = sbinfo->si_wbr_copyup;
+ if (v != AuWbrCopyup_Def)
+ seq_printf(m, ",cpup=%s", au_optstr_wbr_copyup(v));
+
+ v = au_opt_test(mnt_flags, ALWAYS_DIROPQ);
+ if (v != au_opt_test(AuOpt_Def, ALWAYS_DIROPQ))
+ seq_printf(m, ",diropq=%c", v ? 'a' : 'w');
+
+ AuUInt(DIRWH, dirwh, sbinfo->si_dirwh);
+
+ v = jiffies_to_msecs(sbinfo->si_rdcache) / MSEC_PER_SEC;
+ AuUInt(RDCACHE, rdcache, v);
+
+ AuUInt(RDBLK, rdblk, sbinfo->si_rdblk);
+ AuUInt(RDHASH, rdhash, sbinfo->si_rdhash);
+
+ au_fhsm_show(m, sbinfo);
+
+ AuBool(DIRREN, dirren);
+ AuBool(SUM, sum);
+ /* AuBool(SUM_W, wsum); */
+ AuBool(WARN_PERM, warn_perm);
+ AuBool(VERBOSE, verbose);
+
+out:
+ /* be sure to print "br:" last */
+ if (!sysaufs_brs) {
+ seq_puts(m, ",br:");
+ au_show_brs(m, sb);
+ }
+ si_read_unlock(sb);
+ return 0;
+
+#undef AuBool
+#undef AuStr
+#undef AuUInt
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* sum mode which returns the summation for statfs(2) */
+
+static u64 au_add_till_max(u64 a, u64 b)
+{
+ u64 old;
+
+ old = a;
+ a += b;
+ if (old <= a)
+ return a;
+ return ULLONG_MAX;
+}
+
+static u64 au_mul_till_max(u64 a, long mul)
+{
+ u64 old;
+
+ old = a;
+ a *= mul;
+ if (old <= a)
+ return a;
+ return ULLONG_MAX;
+}
+
+static int au_statfs_sum(struct super_block *sb, struct kstatfs *buf)
+{
+ int err;
+ long bsize, factor;
+ u64 blocks, bfree, bavail, files, ffree;
+ aufs_bindex_t bbot, bindex, i;
+ unsigned char shared;
+ struct path h_path;
+ struct super_block *h_sb;
+
+ err = 0;
+ bsize = LONG_MAX;
+ files = 0;
+ ffree = 0;
+ blocks = 0;
+ bfree = 0;
+ bavail = 0;
+ bbot = au_sbbot(sb);
+ for (bindex = 0; bindex <= bbot; bindex++) {
+ h_path.mnt = au_sbr_mnt(sb, bindex);
+ h_sb = h_path.mnt->mnt_sb;
+ shared = 0;
+ for (i = 0; !shared && i < bindex; i++)
+ shared = (au_sbr_sb(sb, i) == h_sb);
+ if (shared)
+ continue;
+
+ /* sb->s_root for NFS is unreliable */
+ h_path.dentry = h_path.mnt->mnt_root;
+ err = vfs_statfs(&h_path, buf);
+ if (unlikely(err))
+ goto out;
+
+ if (bsize > buf->f_bsize) {
+ /*
+ * we will reduce bsize, so we have to expand blocks
+ * etc. to match them again
+ */
+ factor = (bsize / buf->f_bsize);
+ blocks = au_mul_till_max(blocks, factor);
+ bfree = au_mul_till_max(bfree, factor);
+ bavail = au_mul_till_max(bavail, factor);
+ bsize = buf->f_bsize;
+ }
+
+ factor = (buf->f_bsize / bsize);
+ blocks = au_add_till_max(blocks,
+ au_mul_till_max(buf->f_blocks, factor));
+ bfree = au_add_till_max(bfree,
+ au_mul_till_max(buf->f_bfree, factor));
+ bavail = au_add_till_max(bavail,
+ au_mul_till_max(buf->f_bavail, factor));
+ files = au_add_till_max(files, buf->f_files);
+ ffree = au_add_till_max(ffree, buf->f_ffree);
+ }
+
+ buf->f_bsize = bsize;
+ buf->f_blocks = blocks;
+ buf->f_bfree = bfree;
+ buf->f_bavail = bavail;
+ buf->f_files = files;
+ buf->f_ffree = ffree;
+ buf->f_frsize = 0;
+
+out:
+ return err;
+}
+
+static int aufs_statfs(struct dentry *dentry, struct kstatfs *buf)
+{
+ int err;
+ struct path h_path;
+ struct super_block *sb;
+
+ /* lock free root dinfo */
+ sb = dentry->d_sb;
+ si_noflush_read_lock(sb);
+ if (!au_opt_test(au_mntflags(sb), SUM)) {
+ /* sb->s_root for NFS is unreliable */
+ h_path.mnt = au_sbr_mnt(sb, 0);
+ h_path.dentry = h_path.mnt->mnt_root;
+ err = vfs_statfs(&h_path, buf);
+ } else
+ err = au_statfs_sum(sb, buf);
+ si_read_unlock(sb);
+
+ if (!err) {
+ buf->f_type = AUFS_SUPER_MAGIC;
+ buf->f_namelen = AUFS_MAX_NAMELEN;
+ memset(&buf->f_fsid, 0, sizeof(buf->f_fsid));
+ }
+ /* buf->f_bsize = buf->f_blocks = buf->f_bfree = buf->f_bavail = -1; */
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int aufs_sync_fs(struct super_block *sb, int wait)
+{
+ int err, e;
+ aufs_bindex_t bbot, bindex;
+ struct au_branch *br;
+ struct super_block *h_sb;
+
+ err = 0;
+ si_noflush_read_lock(sb);
+ bbot = au_sbbot(sb);
+ for (bindex = 0; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ if (!au_br_writable(br->br_perm))
+ continue;
+
+ h_sb = au_sbr_sb(sb, bindex);
+ e = vfsub_sync_filesystem(h_sb, wait);
+ if (unlikely(e && !err))
+ err = e;
+ /* go on even if an error happens */
+ }
+ si_read_unlock(sb);
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* final actions when unmounting a file system */
+static void aufs_put_super(struct super_block *sb)
+{
+ struct au_sbinfo *sbinfo;
+
+ sbinfo = au_sbi(sb);
+ if (sbinfo)
+ kobject_put(&sbinfo->si_kobj);
+}
+
+/* ---------------------------------------------------------------------- */
+
+void *au_array_alloc(unsigned long long *hint, au_arraycb_t cb,
+ struct super_block *sb, void *arg)
+{
+ void *array;
+ unsigned long long n, sz;
+
+ array = NULL;
+ n = 0;
+ if (!*hint)
+ goto out;
+
+ if (*hint > ULLONG_MAX / sizeof(array)) {
+ array = ERR_PTR(-EMFILE);
+ pr_err("hint %llu\n", *hint);
+ goto out;
+ }
+
+ sz = sizeof(array) * *hint;
+ array = kzalloc(sz, GFP_NOFS);
+ if (unlikely(!array))
+ array = vzalloc(sz);
+ if (unlikely(!array)) {
+ array = ERR_PTR(-ENOMEM);
+ goto out;
+ }
+
+ n = cb(sb, array, *hint, arg);
+ AuDebugOn(n > *hint);
+
+out:
+ *hint = n;
+ return array;
+}
+
+static unsigned long long au_iarray_cb(struct super_block *sb, void *a,
+ unsigned long long max __maybe_unused,
+ void *arg)
+{
+ unsigned long long n;
+ struct inode **p, *inode;
+ struct list_head *head;
+
+ n = 0;
+ p = a;
+ head = arg;
+ spin_lock(&sb->s_inode_list_lock);
+ list_for_each_entry(inode, head, i_sb_list) {
+ if (!au_is_bad_inode(inode)
+ && au_ii(inode)->ii_btop >= 0) {
+ spin_lock(&inode->i_lock);
+ if (atomic_read(&inode->i_count)) {
+ au_igrab(inode);
+ *p++ = inode;
+ n++;
+ AuDebugOn(n > max);
+ }
+ spin_unlock(&inode->i_lock);
+ }
+ }
+ spin_unlock(&sb->s_inode_list_lock);
+
+ return n;
+}
+
+struct inode **au_iarray_alloc(struct super_block *sb, unsigned long long *max)
+{
+ struct au_sbinfo *sbi;
+
+ sbi = au_sbi(sb);
+ *max = au_lcnt_read(&sbi->si_ninodes, /*do_rev*/1);
+ return au_array_alloc(max, au_iarray_cb, sb, &sb->s_inodes);
+}
+
+void au_iarray_free(struct inode **a, unsigned long long max)
+{
+ unsigned long long ull;
+
+ for (ull = 0; ull < max; ull++)
+ iput(a[ull]);
+ kvfree(a);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * refresh dentry and inode at remount time.
+ */
+/* todo: consolidate with simple_reval_dpath() and au_reval_for_attr() */
+static int au_do_refresh(struct dentry *dentry, unsigned int dir_flags,
+ struct dentry *parent)
+{
+ int err;
+
+ di_write_lock_child(dentry);
+ di_read_lock_parent(parent, AuLock_IR);
+ err = au_refresh_dentry(dentry, parent);
+ if (!err && dir_flags)
+ au_hn_reset(d_inode(dentry), dir_flags);
+ di_read_unlock(parent, AuLock_IR);
+ di_write_unlock(dentry);
+
+ return err;
+}
+
+static int au_do_refresh_d(struct dentry *dentry, unsigned int sigen,
+ struct au_sbinfo *sbinfo,
+ const unsigned int dir_flags, unsigned int do_idop)
+{
+ int err;
+ struct dentry *parent;
+
+ err = 0;
+ parent = dget_parent(dentry);
+ if (!au_digen_test(parent, sigen) && au_digen_test(dentry, sigen)) {
+ if (d_really_is_positive(dentry)) {
+ if (!d_is_dir(dentry))
+ err = au_do_refresh(dentry, /*dir_flags*/0,
+ parent);
+ else {
+ err = au_do_refresh(dentry, dir_flags, parent);
+ if (unlikely(err))
+ au_fset_si(sbinfo, FAILED_REFRESH_DIR);
+ }
+ } else
+ err = au_do_refresh(dentry, /*dir_flags*/0, parent);
+ AuDbgDentry(dentry);
+ }
+ dput(parent);
+
+ if (!err) {
+ if (do_idop)
+ au_refresh_dop(dentry, /*force_reval*/0);
+ } else
+ au_refresh_dop(dentry, /*force_reval*/1);
+
+ AuTraceErr(err);
+ return err;
+}
+
+static int au_refresh_d(struct super_block *sb, unsigned int do_idop)
+{
+ int err, i, j, ndentry, e;
+ unsigned int sigen;
+ struct au_dcsub_pages dpages;
+ struct au_dpage *dpage;
+ struct dentry **dentries, *d;
+ struct au_sbinfo *sbinfo;
+ struct dentry *root = sb->s_root;
+ const unsigned int dir_flags = au_hi_flags(d_inode(root), /*isdir*/1);
+
+ if (do_idop)
+ au_refresh_dop(root, /*force_reval*/0);
+
+ err = au_dpages_init(&dpages, GFP_NOFS);
+ if (unlikely(err))
+ goto out;
+ err = au_dcsub_pages(&dpages, root, NULL, NULL);
+ if (unlikely(err))
+ goto out_dpages;
+
+ sigen = au_sigen(sb);
+ sbinfo = au_sbi(sb);
+ for (i = 0; i < dpages.ndpage; i++) {
+ dpage = dpages.dpages + i;
+ dentries = dpage->dentries;
+ ndentry = dpage->ndentry;
+ for (j = 0; j < ndentry; j++) {
+ d = dentries[j];
+ e = au_do_refresh_d(d, sigen, sbinfo, dir_flags,
+ do_idop);
+ if (unlikely(e && !err))
+ err = e;
+ /* go on even err */
+ }
+ }
+
+out_dpages:
+ au_dpages_free(&dpages);
+out:
+ return err;
+}
+
+static int au_refresh_i(struct super_block *sb, unsigned int do_idop)
+{
+ int err, e;
+ unsigned int sigen;
+ unsigned long long max, ull;
+ struct inode *inode, **array;
+
+ array = au_iarray_alloc(sb, &max);
+ err = PTR_ERR(array);
+ if (IS_ERR(array))
+ goto out;
+
+ err = 0;
+ sigen = au_sigen(sb);
+ for (ull = 0; ull < max; ull++) {
+ inode = array[ull];
+ if (unlikely(!inode))
+ break;
+
+ e = 0;
+ ii_write_lock_child(inode);
+ if (au_iigen(inode, NULL) != sigen) {
+ e = au_refresh_hinode_self(inode);
+ if (unlikely(e)) {
+ au_refresh_iop(inode, /*force_getattr*/1);
+ pr_err("error %d, i%lu\n", e, inode->i_ino);
+ if (!err)
+ err = e;
+ /* go on even if err */
+ }
+ }
+ if (!e && do_idop)
+ au_refresh_iop(inode, /*force_getattr*/0);
+ ii_write_unlock(inode);
+ }
+
+ au_iarray_free(array, max);
+
+out:
+ return err;
+}
+
+static void au_remount_refresh(struct super_block *sb, unsigned int do_idop)
+{
+ int err, e;
+ unsigned int udba;
+ aufs_bindex_t bindex, bbot;
+ struct dentry *root;
+ struct inode *inode;
+ struct au_branch *br;
+ struct au_sbinfo *sbi;
+
+ au_sigen_inc(sb);
+ sbi = au_sbi(sb);
+ au_fclr_si(sbi, FAILED_REFRESH_DIR);
+
+ root = sb->s_root;
+ DiMustNoWaiters(root);
+ inode = d_inode(root);
+ IiMustNoWaiters(inode);
+
+ udba = au_opt_udba(sb);
+ bbot = au_sbbot(sb);
+ for (bindex = 0; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ err = au_hnotify_reset_br(udba, br, br->br_perm);
+ if (unlikely(err))
+ AuIOErr("hnotify failed on br %d, %d, ignored\n",
+ bindex, err);
+ /* go on even if err */
+ }
+ au_hn_reset(inode, au_hi_flags(inode, /*isdir*/1));
+
+ if (do_idop) {
+ if (au_ftest_si(sbi, NO_DREVAL)) {
+ AuDebugOn(sb->s_d_op == &aufs_dop_noreval);
+ sb->s_d_op = &aufs_dop_noreval;
+ AuDebugOn(sbi->si_iop_array == aufs_iop_nogetattr);
+ sbi->si_iop_array = aufs_iop_nogetattr;
+ } else {
+ AuDebugOn(sb->s_d_op == &aufs_dop);
+ sb->s_d_op = &aufs_dop;
+ AuDebugOn(sbi->si_iop_array == aufs_iop);
+ sbi->si_iop_array = aufs_iop;
+ }
+ pr_info("reset to %ps and %ps\n",
+ sb->s_d_op, sbi->si_iop_array);
+ }
+
+ di_write_unlock(root);
+ err = au_refresh_d(sb, do_idop);
+ e = au_refresh_i(sb, do_idop);
+ if (unlikely(e && !err))
+ err = e;
+ /* aufs_write_lock() calls ..._child() */
+ di_write_lock_child(root);
+
+ au_cpup_attr_all(inode, /*force*/1);
+
+ if (unlikely(err))
+ AuIOErr("refresh failed, ignored, %d\n", err);
+}
+
+/* stop extra interpretation of errno in mount(8), and strange error messages */
+static int cvt_err(int err)
+{
+ AuTraceErr(err);
+
+ switch (err) {
+ case -ENOENT:
+ case -ENOTDIR:
+ case -EEXIST:
+ case -EIO:
+ err = -EINVAL;
+ }
+ return err;
+}
+
+static int aufs_remount_fs(struct super_block *sb, int *flags, char *data)
+{
+ int err, do_dx;
+ unsigned int mntflags;
+ struct au_opts opts = {
+ .opt = NULL
+ };
+ struct dentry *root;
+ struct inode *inode;
+ struct au_sbinfo *sbinfo;
+
+ err = 0;
+ root = sb->s_root;
+ if (!data || !*data) {
+ err = si_write_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+ if (!err) {
+ di_write_lock_child(root);
+ err = au_opts_verify(sb, *flags, /*pending*/0);
+ aufs_write_unlock(root);
+ }
+ goto out;
+ }
+
+ err = -ENOMEM;
+ opts.opt = (void *)__get_free_page(GFP_NOFS);
+ if (unlikely(!opts.opt))
+ goto out;
+ opts.max_opt = PAGE_SIZE / sizeof(*opts.opt);
+ opts.flags = AuOpts_REMOUNT;
+ opts.sb_flags = *flags;
+
+ /* parse it before aufs lock */
+ err = au_opts_parse(sb, data, &opts);
+ if (unlikely(err))
+ goto out_opts;
+
+ sbinfo = au_sbi(sb);
+ inode = d_inode(root);
+ inode_lock(inode);
+ err = si_write_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+ if (unlikely(err))
+ goto out_mtx;
+ di_write_lock_child(root);
+
+ /* au_opts_remount() may return an error */
+ err = au_opts_remount(sb, &opts);
+ au_opts_free(&opts);
+
+ if (au_ftest_opts(opts.flags, REFRESH))
+ au_remount_refresh(sb, au_ftest_opts(opts.flags, REFRESH_IDOP));
+
+ if (au_ftest_opts(opts.flags, REFRESH_DYAOP)) {
+ mntflags = au_mntflags(sb);
+ do_dx = !!au_opt_test(mntflags, DIO);
+ au_dy_arefresh(do_dx);
+ }
+
+ au_fhsm_wrote_all(sb, /*force*/1); /* ?? */
+ aufs_write_unlock(root);
+
+out_mtx:
+ inode_unlock(inode);
+out_opts:
+ free_page((unsigned long)opts.opt);
+out:
+ err = cvt_err(err);
+ AuTraceErr(err);
+ return err;
+}
+
+static const struct super_operations aufs_sop = {
+ .alloc_inode = aufs_alloc_inode,
+ .destroy_inode = aufs_destroy_inode,
+ .free_inode = aufs_free_inode,
+ /* always deleting, no clearing */
+ .drop_inode = generic_delete_inode,
+ .show_options = aufs_show_options,
+ .statfs = aufs_statfs,
+ .put_super = aufs_put_super,
+ .sync_fs = aufs_sync_fs,
+ .remount_fs = aufs_remount_fs
+};
+
+/* ---------------------------------------------------------------------- */
+
+static int alloc_root(struct super_block *sb)
+{
+ int err;
+ struct inode *inode;
+ struct dentry *root;
+
+ err = -ENOMEM;
+ inode = au_iget_locked(sb, AUFS_ROOT_INO);
+ err = PTR_ERR(inode);
+ if (IS_ERR(inode))
+ goto out;
+
+ inode->i_op = aufs_iop + AuIop_DIR; /* with getattr by default */
+ inode->i_fop = &aufs_dir_fop;
+ inode->i_mode = S_IFDIR;
+ set_nlink(inode, 2);
+ unlock_new_inode(inode);
+
+ root = d_make_root(inode);
+ if (unlikely(!root))
+ goto out;
+ err = PTR_ERR(root);
+ if (IS_ERR(root))
+ goto out;
+
+ err = au_di_init(root);
+ if (!err) {
+ sb->s_root = root;
+ return 0; /* success */
+ }
+ dput(root);
+
+out:
+ return err;
+}
+
+static int aufs_fill_super(struct super_block *sb, void *raw_data,
+ int silent __maybe_unused)
+{
+ int err;
+ struct au_opts opts = {
+ .opt = NULL
+ };
+ struct au_sbinfo *sbinfo;
+ struct dentry *root;
+ struct inode *inode;
+ char *arg = raw_data;
+
+ if (unlikely(!arg || !*arg)) {
+ err = -EINVAL;
+ pr_err("no arg\n");
+ goto out;
+ }
+
+ err = -ENOMEM;
+ opts.opt = (void *)__get_free_page(GFP_NOFS);
+ if (unlikely(!opts.opt))
+ goto out;
+ opts.max_opt = PAGE_SIZE / sizeof(*opts.opt);
+ opts.sb_flags = sb->s_flags;
+
+ err = au_si_alloc(sb);
+ if (unlikely(err))
+ goto out_opts;
+ sbinfo = au_sbi(sb);
+
+ /* all timestamps always follow the ones on the branch */
+ sb->s_flags |= SB_NOATIME | SB_NODIRATIME;
+ sb->s_flags |= SB_I_VERSION; /* do we really need this? */
+ sb->s_op = &aufs_sop;
+ sb->s_d_op = &aufs_dop;
+ sb->s_magic = AUFS_SUPER_MAGIC;
+ sb->s_maxbytes = 0;
+ sb->s_stack_depth = 1;
+ au_export_init(sb);
+ au_xattr_init(sb);
+
+ err = alloc_root(sb);
+ if (unlikely(err)) {
+ si_write_unlock(sb);
+ goto out_info;
+ }
+ root = sb->s_root;
+ inode = d_inode(root);
+
+ /*
+ * actually we can parse options regardless aufs lock here.
+ * but at remount time, parsing must be done before aufs lock.
+ * so we follow the same rule.
+ */
+ ii_write_lock_parent(inode);
+ aufs_write_unlock(root);
+ err = au_opts_parse(sb, arg, &opts);
+ if (unlikely(err))
+ goto out_root;
+
+ /* lock vfs_inode first, then aufs. */
+ inode_lock(inode);
+ aufs_write_lock(root);
+ err = au_opts_mount(sb, &opts);
+ au_opts_free(&opts);
+ if (!err && au_ftest_si(sbinfo, NO_DREVAL)) {
+ sb->s_d_op = &aufs_dop_noreval;
+ pr_info("%ps\n", sb->s_d_op);
+ au_refresh_dop(root, /*force_reval*/0);
+ sbinfo->si_iop_array = aufs_iop_nogetattr;
+ au_refresh_iop(inode, /*force_getattr*/0);
+ }
+ aufs_write_unlock(root);
+ inode_unlock(inode);
+ if (!err)
+ goto out_opts; /* success */
+
+out_root:
+ dput(root);
+ sb->s_root = NULL;
+out_info:
+ kobject_put(&sbinfo->si_kobj);
+ sb->s_fs_info = NULL;
+out_opts:
+ free_page((unsigned long)opts.opt);
+out:
+ AuTraceErr(err);
+ err = cvt_err(err);
+ AuTraceErr(err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct dentry *aufs_mount(struct file_system_type *fs_type, int flags,
+ const char *dev_name __maybe_unused,
+ void *raw_data)
+{
+ struct dentry *root;
+
+ /* all timestamps always follow the ones on the branch */
+ /* mnt->mnt_flags |= MNT_NOATIME | MNT_NODIRATIME; */
+ root = mount_nodev(fs_type, flags, raw_data, aufs_fill_super);
+ if (IS_ERR(root))
+ goto out;
+
+ au_sbilist_add(root->d_sb);
+
+out:
+ return root;
+}
+
+static void aufs_kill_sb(struct super_block *sb)
+{
+ struct au_sbinfo *sbinfo;
+
+ sbinfo = au_sbi(sb);
+ if (sbinfo) {
+ au_sbilist_del(sb);
+ aufs_write_lock(sb->s_root);
+ au_fhsm_fin(sb);
+ if (sbinfo->si_wbr_create_ops->fin)
+ sbinfo->si_wbr_create_ops->fin(sb);
+ if (au_opt_test(sbinfo->si_mntflags, UDBA_HNOTIFY)) {
+ au_opt_set_udba(sbinfo->si_mntflags, UDBA_NONE);
+ au_remount_refresh(sb, /*do_idop*/0);
+ }
+ if (au_opt_test(sbinfo->si_mntflags, PLINK))
+ au_plink_put(sb, /*verbose*/1);
+ au_xino_clr(sb);
+ au_dr_opt_flush(sb);
+ sbinfo->si_sb = NULL;
+ aufs_write_unlock(sb->s_root);
+ au_nwt_flush(&sbinfo->si_nowait);
+ }
+ kill_anon_super(sb);
+}
+
+struct file_system_type aufs_fs_type = {
+ .name = AUFS_FSTYPE,
+ /* a race between rename and others */
+ .fs_flags = FS_RENAME_DOES_D_MOVE,
+ .mount = aufs_mount,
+ .kill_sb = aufs_kill_sb,
+ /* no need to __module_get() and module_put(). */
+ .owner = THIS_MODULE,
+};
diff --git a/fs/aufs/super.h b/fs/aufs/super.h
new file mode 100644
index 0000000000..37f02bb213
--- /dev/null
+++ b/fs/aufs/super.h
@@ -0,0 +1,589 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * super_block operations
+ */
+
+#ifndef __AUFS_SUPER_H__
+#define __AUFS_SUPER_H__
+
+#ifdef __KERNEL__
+
+#include <linux/fs.h>
+#include <linux/kobject.h>
+#include "hbl.h"
+#include "lcnt.h"
+#include "rwsem.h"
+#include "wkq.h"
+
+/* policies to select one among multiple writable branches */
+struct au_wbr_copyup_operations {
+ int (*copyup)(struct dentry *dentry);
+};
+
+#define AuWbr_DIR 1 /* target is a dir */
+#define AuWbr_PARENT (1 << 1) /* always require a parent */
+
+#define au_ftest_wbr(flags, name) ((flags) & AuWbr_##name)
+#define au_fset_wbr(flags, name) { (flags) |= AuWbr_##name; }
+#define au_fclr_wbr(flags, name) { (flags) &= ~AuWbr_##name; }
+
+struct au_wbr_create_operations {
+ int (*create)(struct dentry *dentry, unsigned int flags);
+ int (*init)(struct super_block *sb);
+ int (*fin)(struct super_block *sb);
+};
+
+struct au_wbr_mfs {
+ struct mutex mfs_lock; /* protect this structure */
+ unsigned long mfs_jiffy;
+ unsigned long mfs_expire;
+ aufs_bindex_t mfs_bindex;
+
+ unsigned long long mfsrr_bytes;
+ unsigned long long mfsrr_watermark;
+};
+
+#define AuPlink_NHASH 100
+static inline int au_plink_hash(ino_t ino)
+{
+ return ino % AuPlink_NHASH;
+}
+
+/* File-based Hierarchical Storage Management */
+struct au_fhsm {
+#ifdef CONFIG_AUFS_FHSM
+ /* allow only one process who can receive the notification */
+ spinlock_t fhsm_spin;
+ pid_t fhsm_pid;
+ wait_queue_head_t fhsm_wqh;
+ atomic_t fhsm_readable;
+
+ /* these are protected by si_rwsem */
+ unsigned long fhsm_expire;
+ aufs_bindex_t fhsm_bottom;
+#endif
+};
+
+struct au_branch;
+struct au_sbinfo {
+ /* nowait tasks in the system-wide workqueue */
+ struct au_nowait_tasks si_nowait;
+
+ /*
+ * tried sb->s_umount, but failed due to the dependency between i_mutex.
+ * rwsem for au_sbinfo is necessary.
+ */
+ struct au_rwsem si_rwsem;
+
+ /*
+ * dirty approach to protect sb->sb_inodes and ->s_files (gone) from
+ * remount.
+ */
+ au_lcnt_t si_ninodes, si_nfiles;
+
+ /* branch management */
+ unsigned int si_generation;
+
+ /* see AuSi_ flags */
+ unsigned char au_si_status;
+
+ aufs_bindex_t si_bbot;
+
+ /* dirty trick to keep br_id plus */
+ unsigned int si_last_br_id :
+ sizeof(aufs_bindex_t) * BITS_PER_BYTE - 1;
+ struct au_branch **si_branch;
+
+ /* policy to select a writable branch */
+ unsigned char si_wbr_copyup;
+ unsigned char si_wbr_create;
+ struct au_wbr_copyup_operations *si_wbr_copyup_ops;
+ struct au_wbr_create_operations *si_wbr_create_ops;
+
+ /* round robin */
+ atomic_t si_wbr_rr_next;
+
+ /* most free space */
+ struct au_wbr_mfs si_wbr_mfs;
+
+ /* File-based Hierarchical Storage Management */
+ struct au_fhsm si_fhsm;
+
+ /* mount flags */
+ /* include/asm-ia64/siginfo.h defines a macro named si_flags */
+ unsigned int si_mntflags;
+
+ /* external inode number (bitmap and translation table) */
+ vfs_readf_t si_xread;
+ vfs_writef_t si_xwrite;
+ loff_t si_ximaxent; /* max entries in a xino */
+
+ struct file *si_xib;
+ struct mutex si_xib_mtx; /* protect xib members */
+ unsigned long *si_xib_buf;
+ unsigned long si_xib_last_pindex;
+ int si_xib_next_bit;
+
+ unsigned long si_xino_jiffy;
+ unsigned long si_xino_expire;
+ /* reserved for future use */
+ /* unsigned long long si_xib_limit; */ /* Max xib file size */
+
+#ifdef CONFIG_AUFS_EXPORT
+ /* i_generation */
+ /* todo: make xigen file an array to support many inode numbers */
+ struct file *si_xigen;
+ atomic_t si_xigen_next;
+#endif
+
+ /* dirty trick to support atomic_open */
+ struct hlist_bl_head si_aopen;
+
+ /* vdir parameters */
+ unsigned long si_rdcache; /* max cache time in jiffies */
+ unsigned int si_rdblk; /* deblk size */
+ unsigned int si_rdhash; /* hash size */
+
+ /*
+ * If the number of whiteouts are larger than si_dirwh, leave all of
+ * them after au_whtmp_ren to reduce the cost of rmdir(2).
+ * future fsck.aufs or kernel thread will remove them later.
+ * Otherwise, remove all whiteouts and the dir in rmdir(2).
+ */
+ unsigned int si_dirwh;
+
+ /* pseudo_link list */
+ struct hlist_bl_head si_plink[AuPlink_NHASH];
+ wait_queue_head_t si_plink_wq;
+ spinlock_t si_plink_maint_lock;
+ pid_t si_plink_maint_pid;
+
+ /* file list */
+ struct hlist_bl_head si_files;
+
+ /* with/without getattr, brother of sb->s_d_op */
+ struct inode_operations *si_iop_array;
+
+ /*
+ * sysfs and lifetime management.
+ * this is not a small structure and it may be a waste of memory in case
+ * of sysfs is disabled, particularly when many aufs-es are mounted.
+ * but using sysfs is majority.
+ */
+ struct kobject si_kobj;
+#ifdef CONFIG_DEBUG_FS
+ struct dentry *si_dbgaufs;
+ struct dentry *si_dbgaufs_plink;
+ struct dentry *si_dbgaufs_xib;
+#ifdef CONFIG_AUFS_EXPORT
+ struct dentry *si_dbgaufs_xigen;
+#endif
+#endif
+
+#ifdef CONFIG_AUFS_SBILIST
+ struct hlist_bl_node si_list;
+#endif
+
+ /* dirty, necessary for unmounting, sysfs and sysrq */
+ struct super_block *si_sb;
+};
+
+/* sbinfo status flags */
+/*
+ * set true when refresh_dirs() failed at remount time.
+ * then try refreshing dirs at access time again.
+ * if it is false, refreshing dirs at access time is unnecessary
+ */
+#define AuSi_FAILED_REFRESH_DIR 1
+#define AuSi_FHSM (1 << 1) /* fhsm is active now */
+#define AuSi_NO_DREVAL (1 << 2) /* disable all d_revalidate */
+
+#ifndef CONFIG_AUFS_FHSM
+#undef AuSi_FHSM
+#define AuSi_FHSM 0
+#endif
+
+static inline unsigned char au_do_ftest_si(struct au_sbinfo *sbi,
+ unsigned int flag)
+{
+ AuRwMustAnyLock(&sbi->si_rwsem);
+ return sbi->au_si_status & flag;
+}
+#define au_ftest_si(sbinfo, name) au_do_ftest_si(sbinfo, AuSi_##name)
+#define au_fset_si(sbinfo, name) do { \
+ AuRwMustWriteLock(&(sbinfo)->si_rwsem); \
+ (sbinfo)->au_si_status |= AuSi_##name; \
+} while (0)
+#define au_fclr_si(sbinfo, name) do { \
+ AuRwMustWriteLock(&(sbinfo)->si_rwsem); \
+ (sbinfo)->au_si_status &= ~AuSi_##name; \
+} while (0)
+
+/* ---------------------------------------------------------------------- */
+
+/* policy to select one among writable branches */
+#define AuWbrCopyup(sbinfo, ...) \
+ ((sbinfo)->si_wbr_copyup_ops->copyup(__VA_ARGS__))
+#define AuWbrCreate(sbinfo, ...) \
+ ((sbinfo)->si_wbr_create_ops->create(__VA_ARGS__))
+
+/* flags for si_read_lock()/aufs_read_lock()/di_read_lock() */
+#define AuLock_DW 1 /* write-lock dentry */
+#define AuLock_IR (1 << 1) /* read-lock inode */
+#define AuLock_IW (1 << 2) /* write-lock inode */
+#define AuLock_FLUSH (1 << 3) /* wait for 'nowait' tasks */
+#define AuLock_DIRS (1 << 4) /* target is a pair of dirs */
+ /* except RENAME_EXCHANGE */
+#define AuLock_NOPLM (1 << 5) /* return err in plm mode */
+#define AuLock_NOPLMW (1 << 6) /* wait for plm mode ends */
+#define AuLock_GEN (1 << 7) /* test digen/iigen */
+#define au_ftest_lock(flags, name) ((flags) & AuLock_##name)
+#define au_fset_lock(flags, name) \
+ do { (flags) |= AuLock_##name; } while (0)
+#define au_fclr_lock(flags, name) \
+ do { (flags) &= ~AuLock_##name; } while (0)
+
+/* ---------------------------------------------------------------------- */
+
+/* super.c */
+extern struct file_system_type aufs_fs_type;
+struct inode *au_iget_locked(struct super_block *sb, ino_t ino);
+typedef unsigned long long (*au_arraycb_t)(struct super_block *sb, void *array,
+ unsigned long long max, void *arg);
+void *au_array_alloc(unsigned long long *hint, au_arraycb_t cb,
+ struct super_block *sb, void *arg);
+struct inode **au_iarray_alloc(struct super_block *sb, unsigned long long *max);
+void au_iarray_free(struct inode **a, unsigned long long max);
+
+/* sbinfo.c */
+void au_si_free(struct kobject *kobj);
+int au_si_alloc(struct super_block *sb);
+int au_sbr_realloc(struct au_sbinfo *sbinfo, int nbr, int may_shrink);
+
+unsigned int au_sigen_inc(struct super_block *sb);
+aufs_bindex_t au_new_br_id(struct super_block *sb);
+
+int si_read_lock(struct super_block *sb, int flags);
+int si_write_lock(struct super_block *sb, int flags);
+int aufs_read_lock(struct dentry *dentry, int flags);
+void aufs_read_unlock(struct dentry *dentry, int flags);
+void aufs_write_lock(struct dentry *dentry);
+void aufs_write_unlock(struct dentry *dentry);
+int aufs_read_and_write_lock2(struct dentry *d1, struct dentry *d2, int flags);
+void aufs_read_and_write_unlock2(struct dentry *d1, struct dentry *d2);
+
+/* wbr_policy.c */
+extern struct au_wbr_copyup_operations au_wbr_copyup_ops[];
+extern struct au_wbr_create_operations au_wbr_create_ops[];
+int au_cpdown_dirs(struct dentry *dentry, aufs_bindex_t bdst);
+int au_wbr_nonopq(struct dentry *dentry, aufs_bindex_t bindex);
+int au_wbr_do_copyup_bu(struct dentry *dentry, aufs_bindex_t btop);
+
+/* mvdown.c */
+int au_mvdown(struct dentry *dentry, struct aufs_mvdown __user *arg);
+
+#ifdef CONFIG_AUFS_FHSM
+/* fhsm.c */
+
+static inline pid_t au_fhsm_pid(struct au_fhsm *fhsm)
+{
+ pid_t pid;
+
+ spin_lock(&fhsm->fhsm_spin);
+ pid = fhsm->fhsm_pid;
+ spin_unlock(&fhsm->fhsm_spin);
+
+ return pid;
+}
+
+void au_fhsm_wrote(struct super_block *sb, aufs_bindex_t bindex, int force);
+void au_fhsm_wrote_all(struct super_block *sb, int force);
+int au_fhsm_fd(struct super_block *sb, int oflags);
+int au_fhsm_br_alloc(struct au_branch *br);
+void au_fhsm_set_bottom(struct super_block *sb, aufs_bindex_t bindex);
+void au_fhsm_fin(struct super_block *sb);
+void au_fhsm_init(struct au_sbinfo *sbinfo);
+void au_fhsm_set(struct au_sbinfo *sbinfo, unsigned int sec);
+void au_fhsm_show(struct seq_file *seq, struct au_sbinfo *sbinfo);
+#else
+AuStubVoid(au_fhsm_wrote, struct super_block *sb, aufs_bindex_t bindex,
+ int force)
+AuStubVoid(au_fhsm_wrote_all, struct super_block *sb, int force)
+AuStub(int, au_fhsm_fd, return -EOPNOTSUPP, struct super_block *sb, int oflags)
+AuStub(pid_t, au_fhsm_pid, return 0, struct au_fhsm *fhsm)
+AuStubInt0(au_fhsm_br_alloc, struct au_branch *br)
+AuStubVoid(au_fhsm_set_bottom, struct super_block *sb, aufs_bindex_t bindex)
+AuStubVoid(au_fhsm_fin, struct super_block *sb)
+AuStubVoid(au_fhsm_init, struct au_sbinfo *sbinfo)
+AuStubVoid(au_fhsm_set, struct au_sbinfo *sbinfo, unsigned int sec)
+AuStubVoid(au_fhsm_show, struct seq_file *seq, struct au_sbinfo *sbinfo)
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct au_sbinfo *au_sbi(struct super_block *sb)
+{
+ return sb->s_fs_info;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_EXPORT
+int au_test_nfsd(void);
+void au_export_init(struct super_block *sb);
+void au_xigen_inc(struct inode *inode);
+int au_xigen_new(struct inode *inode);
+int au_xigen_set(struct super_block *sb, struct path *path);
+void au_xigen_clr(struct super_block *sb);
+
+static inline int au_busy_or_stale(void)
+{
+ if (!au_test_nfsd())
+ return -EBUSY;
+ return -ESTALE;
+}
+#else
+AuStubInt0(au_test_nfsd, void)
+AuStubVoid(au_export_init, struct super_block *sb)
+AuStubVoid(au_xigen_inc, struct inode *inode)
+AuStubInt0(au_xigen_new, struct inode *inode)
+AuStubInt0(au_xigen_set, struct super_block *sb, struct path *path)
+AuStubVoid(au_xigen_clr, struct super_block *sb)
+AuStub(int, au_busy_or_stale, return -EBUSY, void)
+#endif /* CONFIG_AUFS_EXPORT */
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_SBILIST
+/* module.c */
+extern struct hlist_bl_head au_sbilist;
+
+static inline void au_sbilist_init(void)
+{
+ INIT_HLIST_BL_HEAD(&au_sbilist);
+}
+
+static inline void au_sbilist_add(struct super_block *sb)
+{
+ au_hbl_add(&au_sbi(sb)->si_list, &au_sbilist);
+}
+
+static inline void au_sbilist_del(struct super_block *sb)
+{
+ au_hbl_del(&au_sbi(sb)->si_list, &au_sbilist);
+}
+
+#ifdef CONFIG_AUFS_MAGIC_SYSRQ
+static inline void au_sbilist_lock(void)
+{
+ hlist_bl_lock(&au_sbilist);
+}
+
+static inline void au_sbilist_unlock(void)
+{
+ hlist_bl_unlock(&au_sbilist);
+}
+#define AuGFP_SBILIST GFP_ATOMIC
+#else
+AuStubVoid(au_sbilist_lock, void)
+AuStubVoid(au_sbilist_unlock, void)
+#define AuGFP_SBILIST GFP_NOFS
+#endif /* CONFIG_AUFS_MAGIC_SYSRQ */
+#else
+AuStubVoid(au_sbilist_init, void)
+AuStubVoid(au_sbilist_add, struct super_block *sb)
+AuStubVoid(au_sbilist_del, struct super_block *sb)
+AuStubVoid(au_sbilist_lock, void)
+AuStubVoid(au_sbilist_unlock, void)
+#define AuGFP_SBILIST GFP_NOFS
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+static inline void dbgaufs_si_null(struct au_sbinfo *sbinfo)
+{
+ /*
+ * This function is a dynamic '__init' function actually,
+ * so the tiny check for si_rwsem is unnecessary.
+ */
+ /* AuRwMustWriteLock(&sbinfo->si_rwsem); */
+#ifdef CONFIG_DEBUG_FS
+ sbinfo->si_dbgaufs = NULL;
+ sbinfo->si_dbgaufs_plink = NULL;
+ sbinfo->si_dbgaufs_xib = NULL;
+#ifdef CONFIG_AUFS_EXPORT
+ sbinfo->si_dbgaufs_xigen = NULL;
+#endif
+#endif
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* current->atomic_flags */
+/* this value should never corrupt the ones defined in linux/sched.h */
+#define PFA_AUFS 0x10
+
+TASK_PFA_TEST(AUFS, test_aufs) /* task_test_aufs */
+TASK_PFA_SET(AUFS, aufs) /* task_set_aufs */
+TASK_PFA_CLEAR(AUFS, aufs) /* task_clear_aufs */
+
+static inline int si_pid_test(struct super_block *sb)
+{
+ return !!task_test_aufs(current);
+}
+
+static inline void si_pid_clr(struct super_block *sb)
+{
+ AuDebugOn(!task_test_aufs(current));
+ task_clear_aufs(current);
+}
+
+static inline void si_pid_set(struct super_block *sb)
+{
+ AuDebugOn(task_test_aufs(current));
+ task_set_aufs(current);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* lock superblock. mainly for entry point functions */
+#define __si_read_lock(sb) au_rw_read_lock(&au_sbi(sb)->si_rwsem)
+#define __si_write_lock(sb) au_rw_write_lock(&au_sbi(sb)->si_rwsem)
+#define __si_read_trylock(sb) au_rw_read_trylock(&au_sbi(sb)->si_rwsem)
+#define __si_write_trylock(sb) au_rw_write_trylock(&au_sbi(sb)->si_rwsem)
+/*
+#define __si_read_trylock_nested(sb) \
+ au_rw_read_trylock_nested(&au_sbi(sb)->si_rwsem)
+#define __si_write_trylock_nested(sb) \
+ au_rw_write_trylock_nested(&au_sbi(sb)->si_rwsem)
+*/
+
+#define __si_read_unlock(sb) au_rw_read_unlock(&au_sbi(sb)->si_rwsem)
+#define __si_write_unlock(sb) au_rw_write_unlock(&au_sbi(sb)->si_rwsem)
+#define __si_downgrade_lock(sb) au_rw_dgrade_lock(&au_sbi(sb)->si_rwsem)
+
+#define SiMustNoWaiters(sb) AuRwMustNoWaiters(&au_sbi(sb)->si_rwsem)
+#define SiMustAnyLock(sb) AuRwMustAnyLock(&au_sbi(sb)->si_rwsem)
+#define SiMustWriteLock(sb) AuRwMustWriteLock(&au_sbi(sb)->si_rwsem)
+
+static inline void si_noflush_read_lock(struct super_block *sb)
+{
+ __si_read_lock(sb);
+ si_pid_set(sb);
+}
+
+static inline int si_noflush_read_trylock(struct super_block *sb)
+{
+ int locked;
+
+ locked = __si_read_trylock(sb);
+ if (locked)
+ si_pid_set(sb);
+ return locked;
+}
+
+static inline void si_noflush_write_lock(struct super_block *sb)
+{
+ __si_write_lock(sb);
+ si_pid_set(sb);
+}
+
+static inline int si_noflush_write_trylock(struct super_block *sb)
+{
+ int locked;
+
+ locked = __si_write_trylock(sb);
+ if (locked)
+ si_pid_set(sb);
+ return locked;
+}
+
+#if 0 /* reserved */
+static inline int si_read_trylock(struct super_block *sb, int flags)
+{
+ if (au_ftest_lock(flags, FLUSH))
+ au_nwt_flush(&au_sbi(sb)->si_nowait);
+ return si_noflush_read_trylock(sb);
+}
+#endif
+
+static inline void si_read_unlock(struct super_block *sb)
+{
+ si_pid_clr(sb);
+ __si_read_unlock(sb);
+}
+
+#if 0 /* reserved */
+static inline int si_write_trylock(struct super_block *sb, int flags)
+{
+ if (au_ftest_lock(flags, FLUSH))
+ au_nwt_flush(&au_sbi(sb)->si_nowait);
+ return si_noflush_write_trylock(sb);
+}
+#endif
+
+static inline void si_write_unlock(struct super_block *sb)
+{
+ si_pid_clr(sb);
+ __si_write_unlock(sb);
+}
+
+#if 0 /* reserved */
+static inline void si_downgrade_lock(struct super_block *sb)
+{
+ __si_downgrade_lock(sb);
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+static inline aufs_bindex_t au_sbbot(struct super_block *sb)
+{
+ SiMustAnyLock(sb);
+ return au_sbi(sb)->si_bbot;
+}
+
+static inline unsigned int au_mntflags(struct super_block *sb)
+{
+ SiMustAnyLock(sb);
+ return au_sbi(sb)->si_mntflags;
+}
+
+static inline unsigned int au_sigen(struct super_block *sb)
+{
+ SiMustAnyLock(sb);
+ return au_sbi(sb)->si_generation;
+}
+
+static inline struct au_branch *au_sbr(struct super_block *sb,
+ aufs_bindex_t bindex)
+{
+ SiMustAnyLock(sb);
+ return au_sbi(sb)->si_branch[0 + bindex];
+}
+
+static inline loff_t au_xi_maxent(struct super_block *sb)
+{
+ SiMustAnyLock(sb);
+ return au_sbi(sb)->si_ximaxent;
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_SUPER_H__ */
diff --git a/fs/aufs/sysaufs.c b/fs/aufs/sysaufs.c
new file mode 100644
index 0000000000..32a0811c54
--- /dev/null
+++ b/fs/aufs/sysaufs.c
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * sysfs interface and lifetime management
+ * they are necessary regardless sysfs is disabled.
+ */
+
+#include <linux/random.h>
+#include "aufs.h"
+
+unsigned long sysaufs_si_mask;
+struct kset *sysaufs_kset;
+
+#define AuSiAttr(_name) { \
+ .attr = { .name = __stringify(_name), .mode = 0444 }, \
+ .show = sysaufs_si_##_name, \
+}
+
+static struct sysaufs_si_attr sysaufs_si_attr_xi_path = AuSiAttr(xi_path);
+struct attribute *sysaufs_si_attrs[] = {
+ &sysaufs_si_attr_xi_path.attr,
+ NULL,
+};
+
+static const struct sysfs_ops au_sbi_ops = {
+ .show = sysaufs_si_show
+};
+
+static struct kobj_type au_sbi_ktype = {
+ .release = au_si_free,
+ .sysfs_ops = &au_sbi_ops,
+ .default_attrs = sysaufs_si_attrs
+};
+
+/* ---------------------------------------------------------------------- */
+
+int sysaufs_si_init(struct au_sbinfo *sbinfo)
+{
+ int err;
+
+ sbinfo->si_kobj.kset = sysaufs_kset;
+ /* cf. sysaufs_name() */
+ err = kobject_init_and_add
+ (&sbinfo->si_kobj, &au_sbi_ktype, /*&sysaufs_kset->kobj*/NULL,
+ SysaufsSiNamePrefix "%lx", sysaufs_si_id(sbinfo));
+
+ return err;
+}
+
+void sysaufs_fin(void)
+{
+ sysfs_remove_group(&sysaufs_kset->kobj, sysaufs_attr_group);
+ kset_unregister(sysaufs_kset);
+}
+
+int __init sysaufs_init(void)
+{
+ int err;
+
+ do {
+ get_random_bytes(&sysaufs_si_mask, sizeof(sysaufs_si_mask));
+ } while (!sysaufs_si_mask);
+
+ err = -EINVAL;
+ sysaufs_kset = kset_create_and_add(AUFS_NAME, NULL, fs_kobj);
+ if (unlikely(!sysaufs_kset))
+ goto out;
+ err = PTR_ERR(sysaufs_kset);
+ if (IS_ERR(sysaufs_kset))
+ goto out;
+ err = sysfs_create_group(&sysaufs_kset->kobj, sysaufs_attr_group);
+ if (unlikely(err))
+ kset_unregister(sysaufs_kset);
+
+out:
+ return err;
+}
diff --git a/fs/aufs/sysaufs.h b/fs/aufs/sysaufs.h
new file mode 100644
index 0000000000..195fe279b8
--- /dev/null
+++ b/fs/aufs/sysaufs.h
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * sysfs interface and mount lifetime management
+ */
+
+#ifndef __SYSAUFS_H__
+#define __SYSAUFS_H__
+
+#ifdef __KERNEL__
+
+#include <linux/sysfs.h>
+#include "module.h"
+
+struct super_block;
+struct au_sbinfo;
+
+struct sysaufs_si_attr {
+ struct attribute attr;
+ int (*show)(struct seq_file *seq, struct super_block *sb);
+};
+
+/* ---------------------------------------------------------------------- */
+
+/* sysaufs.c */
+extern unsigned long sysaufs_si_mask;
+extern struct kset *sysaufs_kset;
+extern struct attribute *sysaufs_si_attrs[];
+int sysaufs_si_init(struct au_sbinfo *sbinfo);
+int __init sysaufs_init(void);
+void sysaufs_fin(void);
+
+/* ---------------------------------------------------------------------- */
+
+/* some people doesn't like to show a pointer in kernel */
+static inline unsigned long sysaufs_si_id(struct au_sbinfo *sbinfo)
+{
+ return sysaufs_si_mask ^ (unsigned long)sbinfo;
+}
+
+#define SysaufsSiNamePrefix "si_"
+#define SysaufsSiNameLen (sizeof(SysaufsSiNamePrefix) + 16)
+static inline void sysaufs_name(struct au_sbinfo *sbinfo, char *name)
+{
+ snprintf(name, SysaufsSiNameLen, SysaufsSiNamePrefix "%lx",
+ sysaufs_si_id(sbinfo));
+}
+
+struct au_branch;
+#ifdef CONFIG_SYSFS
+/* sysfs.c */
+extern struct attribute_group *sysaufs_attr_group;
+
+int sysaufs_si_xi_path(struct seq_file *seq, struct super_block *sb);
+ssize_t sysaufs_si_show(struct kobject *kobj, struct attribute *attr,
+ char *buf);
+long au_brinfo_ioctl(struct file *file, unsigned long arg);
+#ifdef CONFIG_COMPAT
+long au_brinfo_compat_ioctl(struct file *file, unsigned long arg);
+#endif
+
+void sysaufs_br_init(struct au_branch *br);
+void sysaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex);
+void sysaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex);
+
+#define sysaufs_brs_init() do {} while (0)
+
+#else
+#define sysaufs_attr_group NULL
+
+AuStubInt0(sysaufs_si_xi_path, struct seq_file *seq, struct super_block *sb)
+AuStub(ssize_t, sysaufs_si_show, return 0, struct kobject *kobj,
+ struct attribute *attr, char *buf)
+AuStubVoid(sysaufs_br_init, struct au_branch *br)
+AuStubVoid(sysaufs_brs_add, struct super_block *sb, aufs_bindex_t bindex)
+AuStubVoid(sysaufs_brs_del, struct super_block *sb, aufs_bindex_t bindex)
+
+static inline void sysaufs_brs_init(void)
+{
+ sysaufs_brs = 0;
+}
+
+#endif /* CONFIG_SYSFS */
+
+#endif /* __KERNEL__ */
+#endif /* __SYSAUFS_H__ */
diff --git a/fs/aufs/sysfs.c b/fs/aufs/sysfs.c
new file mode 100644
index 0000000000..eda987628d
--- /dev/null
+++ b/fs/aufs/sysfs.c
@@ -0,0 +1,374 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * sysfs interface
+ */
+
+#include <linux/compat.h>
+#include <linux/seq_file.h>
+#include "aufs.h"
+
+#ifdef CONFIG_AUFS_FS_MODULE
+/* this entry violates the "one line per file" policy of sysfs */
+static ssize_t config_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ ssize_t err;
+ static char *conf =
+/* this file is generated at compiling */
+#include "conf.str"
+ ;
+
+ err = snprintf(buf, PAGE_SIZE, conf);
+ if (unlikely(err >= PAGE_SIZE))
+ err = -EFBIG;
+ return err;
+}
+
+static struct kobj_attribute au_config_attr = __ATTR_RO(config);
+#endif
+
+static struct attribute *au_attr[] = {
+#ifdef CONFIG_AUFS_FS_MODULE
+ &au_config_attr.attr,
+#endif
+ NULL, /* need to NULL terminate the list of attributes */
+};
+
+static struct attribute_group sysaufs_attr_group_body = {
+ .attrs = au_attr
+};
+
+struct attribute_group *sysaufs_attr_group = &sysaufs_attr_group_body;
+
+/* ---------------------------------------------------------------------- */
+
+int sysaufs_si_xi_path(struct seq_file *seq, struct super_block *sb)
+{
+ int err;
+
+ SiMustAnyLock(sb);
+
+ err = 0;
+ if (au_opt_test(au_mntflags(sb), XINO)) {
+ err = au_xino_path(seq, au_sbi(sb)->si_xib);
+ seq_putc(seq, '\n');
+ }
+ return err;
+}
+
+/*
+ * the lifetime of branch is independent from the entry under sysfs.
+ * sysfs handles the lifetime of the entry, and never call ->show() after it is
+ * unlinked.
+ */
+static int sysaufs_si_br(struct seq_file *seq, struct super_block *sb,
+ aufs_bindex_t bindex, int idx)
+{
+ int err;
+ struct path path;
+ struct dentry *root;
+ struct au_branch *br;
+ au_br_perm_str_t perm;
+
+ AuDbg("b%d\n", bindex);
+
+ err = 0;
+ root = sb->s_root;
+ di_read_lock_parent(root, !AuLock_IR);
+ br = au_sbr(sb, bindex);
+
+ switch (idx) {
+ case AuBrSysfs_BR:
+ path.mnt = au_br_mnt(br);
+ path.dentry = au_h_dptr(root, bindex);
+ err = au_seq_path(seq, &path);
+ if (!err) {
+ au_optstr_br_perm(&perm, br->br_perm);
+ seq_printf(seq, "=%s\n", perm.a);
+ }
+ break;
+ case AuBrSysfs_BRID:
+ seq_printf(seq, "%d\n", br->br_id);
+ break;
+ }
+ di_read_unlock(root, !AuLock_IR);
+ if (unlikely(err || seq_has_overflowed(seq)))
+ err = -E2BIG;
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct seq_file *au_seq(char *p, ssize_t len)
+{
+ struct seq_file *seq;
+
+ seq = kzalloc(sizeof(*seq), GFP_NOFS);
+ if (seq) {
+ /* mutex_init(&seq.lock); */
+ seq->buf = p;
+ seq->size = len;
+ return seq; /* success */
+ }
+
+ seq = ERR_PTR(-ENOMEM);
+ return seq;
+}
+
+#define SysaufsBr_PREFIX "br"
+#define SysaufsBrid_PREFIX "brid"
+
+/* todo: file size may exceed PAGE_SIZE */
+ssize_t sysaufs_si_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ ssize_t err;
+ int idx;
+ long l;
+ aufs_bindex_t bbot;
+ struct au_sbinfo *sbinfo;
+ struct super_block *sb;
+ struct seq_file *seq;
+ char *name;
+ struct attribute **cattr;
+
+ sbinfo = container_of(kobj, struct au_sbinfo, si_kobj);
+ sb = sbinfo->si_sb;
+
+ /*
+ * prevent a race condition between sysfs and aufs.
+ * for instance, sysfs_file_read() calls sysfs_get_active_two() which
+ * prohibits maintaining the sysfs entries.
+ * hew we acquire read lock after sysfs_get_active_two().
+ * on the other hand, the remount process may maintain the sysfs/aufs
+ * entries after acquiring write lock.
+ * it can cause a deadlock.
+ * simply we gave up processing read here.
+ */
+ err = -EBUSY;
+ if (unlikely(!si_noflush_read_trylock(sb)))
+ goto out;
+
+ seq = au_seq(buf, PAGE_SIZE);
+ err = PTR_ERR(seq);
+ if (IS_ERR(seq))
+ goto out_unlock;
+
+ name = (void *)attr->name;
+ cattr = sysaufs_si_attrs;
+ while (*cattr) {
+ if (!strcmp(name, (*cattr)->name)) {
+ err = container_of(*cattr, struct sysaufs_si_attr, attr)
+ ->show(seq, sb);
+ goto out_seq;
+ }
+ cattr++;
+ }
+
+ if (!strncmp(name, SysaufsBrid_PREFIX,
+ sizeof(SysaufsBrid_PREFIX) - 1)) {
+ idx = AuBrSysfs_BRID;
+ name += sizeof(SysaufsBrid_PREFIX) - 1;
+ } else if (!strncmp(name, SysaufsBr_PREFIX,
+ sizeof(SysaufsBr_PREFIX) - 1)) {
+ idx = AuBrSysfs_BR;
+ name += sizeof(SysaufsBr_PREFIX) - 1;
+ } else
+ BUG();
+
+ err = kstrtol(name, 10, &l);
+ if (!err) {
+ bbot = au_sbbot(sb);
+ if (l <= bbot)
+ err = sysaufs_si_br(seq, sb, (aufs_bindex_t)l, idx);
+ else
+ err = -ENOENT;
+ }
+
+out_seq:
+ if (!err) {
+ err = seq->count;
+ /* sysfs limit */
+ if (unlikely(err == PAGE_SIZE))
+ err = -EFBIG;
+ }
+ au_kfree_rcu(seq);
+out_unlock:
+ si_read_unlock(sb);
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_brinfo(struct super_block *sb, union aufs_brinfo __user *arg)
+{
+ int err;
+ int16_t brid;
+ aufs_bindex_t bindex, bbot;
+ size_t sz;
+ char *buf;
+ struct seq_file *seq;
+ struct au_branch *br;
+
+ si_read_lock(sb, AuLock_FLUSH);
+ bbot = au_sbbot(sb);
+ err = bbot + 1;
+ if (!arg)
+ goto out;
+
+ err = -ENOMEM;
+ buf = (void *)__get_free_page(GFP_NOFS);
+ if (unlikely(!buf))
+ goto out;
+
+ seq = au_seq(buf, PAGE_SIZE);
+ err = PTR_ERR(seq);
+ if (IS_ERR(seq))
+ goto out_buf;
+
+ sz = sizeof(*arg) - offsetof(union aufs_brinfo, path);
+ for (bindex = 0; bindex <= bbot; bindex++, arg++) {
+ /* VERIFY_WRITE */
+ err = !access_ok(arg, sizeof(*arg));
+ if (unlikely(err))
+ break;
+
+ br = au_sbr(sb, bindex);
+ brid = br->br_id;
+ BUILD_BUG_ON(sizeof(brid) != sizeof(arg->id));
+ err = __put_user(brid, &arg->id);
+ if (unlikely(err))
+ break;
+
+ BUILD_BUG_ON(sizeof(br->br_perm) != sizeof(arg->perm));
+ err = __put_user(br->br_perm, &arg->perm);
+ if (unlikely(err))
+ break;
+
+ err = au_seq_path(seq, &br->br_path);
+ if (unlikely(err))
+ break;
+ seq_putc(seq, '\0');
+ if (!seq_has_overflowed(seq)) {
+ err = copy_to_user(arg->path, seq->buf, seq->count);
+ seq->count = 0;
+ if (unlikely(err))
+ break;
+ } else {
+ err = -E2BIG;
+ goto out_seq;
+ }
+ }
+ if (unlikely(err))
+ err = -EFAULT;
+
+out_seq:
+ au_kfree_rcu(seq);
+out_buf:
+ free_page((unsigned long)buf);
+out:
+ si_read_unlock(sb);
+ return err;
+}
+
+long au_brinfo_ioctl(struct file *file, unsigned long arg)
+{
+ return au_brinfo(file->f_path.dentry->d_sb, (void __user *)arg);
+}
+
+#ifdef CONFIG_COMPAT
+long au_brinfo_compat_ioctl(struct file *file, unsigned long arg)
+{
+ return au_brinfo(file->f_path.dentry->d_sb, compat_ptr(arg));
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+void sysaufs_br_init(struct au_branch *br)
+{
+ int i;
+ struct au_brsysfs *br_sysfs;
+ struct attribute *attr;
+
+ br_sysfs = br->br_sysfs;
+ for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) {
+ attr = &br_sysfs->attr;
+ sysfs_attr_init(attr);
+ attr->name = br_sysfs->name;
+ attr->mode = 0444;
+ br_sysfs++;
+ }
+}
+
+void sysaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex)
+{
+ struct au_branch *br;
+ struct kobject *kobj;
+ struct au_brsysfs *br_sysfs;
+ int i;
+ aufs_bindex_t bbot;
+
+ if (!sysaufs_brs)
+ return;
+
+ kobj = &au_sbi(sb)->si_kobj;
+ bbot = au_sbbot(sb);
+ for (; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ br_sysfs = br->br_sysfs;
+ for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) {
+ sysfs_remove_file(kobj, &br_sysfs->attr);
+ br_sysfs++;
+ }
+ }
+}
+
+void sysaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex)
+{
+ int err, i;
+ aufs_bindex_t bbot;
+ struct kobject *kobj;
+ struct au_branch *br;
+ struct au_brsysfs *br_sysfs;
+
+ if (!sysaufs_brs)
+ return;
+
+ kobj = &au_sbi(sb)->si_kobj;
+ bbot = au_sbbot(sb);
+ for (; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ br_sysfs = br->br_sysfs;
+ snprintf(br_sysfs[AuBrSysfs_BR].name, sizeof(br_sysfs->name),
+ SysaufsBr_PREFIX "%d", bindex);
+ snprintf(br_sysfs[AuBrSysfs_BRID].name, sizeof(br_sysfs->name),
+ SysaufsBrid_PREFIX "%d", bindex);
+ for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) {
+ err = sysfs_create_file(kobj, &br_sysfs->attr);
+ if (unlikely(err))
+ pr_warn("failed %s under sysfs(%d)\n",
+ br_sysfs->name, err);
+ br_sysfs++;
+ }
+ }
+}
diff --git a/fs/aufs/sysrq.c b/fs/aufs/sysrq.c
new file mode 100644
index 0000000000..db10ec528f
--- /dev/null
+++ b/fs/aufs/sysrq.c
@@ -0,0 +1,160 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * magic sysrq handler
+ */
+
+/* #include <linux/sysrq.h> */
+#include <linux/writeback.h>
+#include "aufs.h"
+
+/* ---------------------------------------------------------------------- */
+
+static void sysrq_sb(struct super_block *sb)
+{
+ char *plevel;
+ struct au_sbinfo *sbinfo;
+ struct file *file;
+ struct hlist_bl_head *files;
+ struct hlist_bl_node *pos;
+ struct au_finfo *finfo;
+
+ plevel = au_plevel;
+ au_plevel = KERN_WARNING;
+
+ /* since we define pr_fmt, call printk directly */
+#define pr(str) printk(KERN_WARNING AUFS_NAME ": " str)
+
+ sbinfo = au_sbi(sb);
+ printk(KERN_WARNING "si=%lx\n", sysaufs_si_id(sbinfo));
+ pr("superblock\n");
+ au_dpri_sb(sb);
+
+#if 0
+ pr("root dentry\n");
+ au_dpri_dentry(sb->s_root);
+ pr("root inode\n");
+ au_dpri_inode(d_inode(sb->s_root));
+#endif
+
+#if 0
+ do {
+ int err, i, j, ndentry;
+ struct au_dcsub_pages dpages;
+ struct au_dpage *dpage;
+
+ err = au_dpages_init(&dpages, GFP_ATOMIC);
+ if (unlikely(err))
+ break;
+ err = au_dcsub_pages(&dpages, sb->s_root, NULL, NULL);
+ if (!err)
+ for (i = 0; i < dpages.ndpage; i++) {
+ dpage = dpages.dpages + i;
+ ndentry = dpage->ndentry;
+ for (j = 0; j < ndentry; j++)
+ au_dpri_dentry(dpage->dentries[j]);
+ }
+ au_dpages_free(&dpages);
+ } while (0);
+#endif
+
+#if 1
+ {
+ struct inode *i;
+
+ pr("isolated inode\n");
+ spin_lock(&sb->s_inode_list_lock);
+ list_for_each_entry(i, &sb->s_inodes, i_sb_list) {
+ spin_lock(&i->i_lock);
+ if (1 || hlist_empty(&i->i_dentry))
+ au_dpri_inode(i);
+ spin_unlock(&i->i_lock);
+ }
+ spin_unlock(&sb->s_inode_list_lock);
+ }
+#endif
+ pr("files\n");
+ files = &au_sbi(sb)->si_files;
+ hlist_bl_lock(files);
+ hlist_bl_for_each_entry(finfo, pos, files, fi_hlist) {
+ umode_t mode;
+
+ file = finfo->fi_file;
+ mode = file_inode(file)->i_mode;
+ if (!special_file(mode))
+ au_dpri_file(file);
+ }
+ hlist_bl_unlock(files);
+ pr("done\n");
+
+#undef pr
+ au_plevel = plevel;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* module parameter */
+static char *aufs_sysrq_key = "a";
+module_param_named(sysrq, aufs_sysrq_key, charp, 0444);
+MODULE_PARM_DESC(sysrq, "MagicSysRq key for " AUFS_NAME);
+
+static void au_sysrq(int key __maybe_unused)
+{
+ struct au_sbinfo *sbinfo;
+ struct hlist_bl_node *pos;
+
+ lockdep_off();
+ au_sbilist_lock();
+ hlist_bl_for_each_entry(sbinfo, pos, &au_sbilist, si_list)
+ sysrq_sb(sbinfo->si_sb);
+ au_sbilist_unlock();
+ lockdep_on();
+}
+
+static struct sysrq_key_op au_sysrq_op = {
+ .handler = au_sysrq,
+ .help_msg = "Aufs",
+ .action_msg = "Aufs",
+ .enable_mask = SYSRQ_ENABLE_DUMP
+};
+
+/* ---------------------------------------------------------------------- */
+
+int __init au_sysrq_init(void)
+{
+ int err;
+ char key;
+
+ err = -1;
+ key = *aufs_sysrq_key;
+ if ('a' <= key && key <= 'z')
+ err = register_sysrq_key(key, &au_sysrq_op);
+ if (unlikely(err))
+ pr_err("err %d, sysrq=%c\n", err, key);
+ return err;
+}
+
+void au_sysrq_fin(void)
+{
+ int err;
+
+ err = unregister_sysrq_key(*aufs_sysrq_key, &au_sysrq_op);
+ if (unlikely(err))
+ pr_err("err %d (ignored)\n", err);
+}
diff --git a/fs/aufs/vdir.c b/fs/aufs/vdir.c
new file mode 100644
index 0000000000..dc768f5d90
--- /dev/null
+++ b/fs/aufs/vdir.c
@@ -0,0 +1,896 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * virtual or vertical directory
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+static unsigned int calc_size(int nlen)
+{
+ return ALIGN(sizeof(struct au_vdir_de) + nlen, sizeof(ino_t));
+}
+
+static int set_deblk_end(union au_vdir_deblk_p *p,
+ union au_vdir_deblk_p *deblk_end)
+{
+ if (calc_size(0) <= deblk_end->deblk - p->deblk) {
+ p->de->de_str.len = 0;
+ /* smp_mb(); */
+ return 0;
+ }
+ return -1; /* error */
+}
+
+/* returns true or false */
+static int is_deblk_end(union au_vdir_deblk_p *p,
+ union au_vdir_deblk_p *deblk_end)
+{
+ if (calc_size(0) <= deblk_end->deblk - p->deblk)
+ return !p->de->de_str.len;
+ return 1;
+}
+
+static unsigned char *last_deblk(struct au_vdir *vdir)
+{
+ return vdir->vd_deblk[vdir->vd_nblk - 1];
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* estimate the appropriate size for name hash table */
+unsigned int au_rdhash_est(loff_t sz)
+{
+ unsigned int n;
+
+ n = UINT_MAX;
+ sz >>= 10;
+ if (sz < n)
+ n = sz;
+ if (sz < AUFS_RDHASH_DEF)
+ n = AUFS_RDHASH_DEF;
+ /* pr_info("n %u\n", n); */
+ return n;
+}
+
+/*
+ * the allocated memory has to be freed by
+ * au_nhash_wh_free() or au_nhash_de_free().
+ */
+int au_nhash_alloc(struct au_nhash *nhash, unsigned int num_hash, gfp_t gfp)
+{
+ struct hlist_head *head;
+ unsigned int u;
+ size_t sz;
+
+ sz = sizeof(*nhash->nh_head) * num_hash;
+ head = kmalloc(sz, gfp);
+ if (head) {
+ nhash->nh_num = num_hash;
+ nhash->nh_head = head;
+ for (u = 0; u < num_hash; u++)
+ INIT_HLIST_HEAD(head++);
+ return 0; /* success */
+ }
+
+ return -ENOMEM;
+}
+
+static void nhash_count(struct hlist_head *head)
+{
+#if 0
+ unsigned long n;
+ struct hlist_node *pos;
+
+ n = 0;
+ hlist_for_each(pos, head)
+ n++;
+ pr_info("%lu\n", n);
+#endif
+}
+
+static void au_nhash_wh_do_free(struct hlist_head *head)
+{
+ struct au_vdir_wh *pos;
+ struct hlist_node *node;
+
+ hlist_for_each_entry_safe(pos, node, head, wh_hash)
+ au_kfree_rcu(pos);
+}
+
+static void au_nhash_de_do_free(struct hlist_head *head)
+{
+ struct au_vdir_dehstr *pos;
+ struct hlist_node *node;
+
+ hlist_for_each_entry_safe(pos, node, head, hash)
+ au_cache_free_vdir_dehstr(pos);
+}
+
+static void au_nhash_do_free(struct au_nhash *nhash,
+ void (*free)(struct hlist_head *head))
+{
+ unsigned int n;
+ struct hlist_head *head;
+
+ n = nhash->nh_num;
+ if (!n)
+ return;
+
+ head = nhash->nh_head;
+ while (n-- > 0) {
+ nhash_count(head);
+ free(head++);
+ }
+ au_kfree_try_rcu(nhash->nh_head);
+}
+
+void au_nhash_wh_free(struct au_nhash *whlist)
+{
+ au_nhash_do_free(whlist, au_nhash_wh_do_free);
+}
+
+static void au_nhash_de_free(struct au_nhash *delist)
+{
+ au_nhash_do_free(delist, au_nhash_de_do_free);
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_nhash_test_longer_wh(struct au_nhash *whlist, aufs_bindex_t btgt,
+ int limit)
+{
+ int num;
+ unsigned int u, n;
+ struct hlist_head *head;
+ struct au_vdir_wh *pos;
+
+ num = 0;
+ n = whlist->nh_num;
+ head = whlist->nh_head;
+ for (u = 0; u < n; u++, head++)
+ hlist_for_each_entry(pos, head, wh_hash)
+ if (pos->wh_bindex == btgt && ++num > limit)
+ return 1;
+ return 0;
+}
+
+static struct hlist_head *au_name_hash(struct au_nhash *nhash,
+ unsigned char *name,
+ unsigned int len)
+{
+ unsigned int v;
+ /* const unsigned int magic_bit = 12; */
+
+ AuDebugOn(!nhash->nh_num || !nhash->nh_head);
+
+ v = 0;
+ if (len > 8)
+ len = 8;
+ while (len--)
+ v += *name++;
+ /* v = hash_long(v, magic_bit); */
+ v %= nhash->nh_num;
+ return nhash->nh_head + v;
+}
+
+static int au_nhash_test_name(struct au_vdir_destr *str, const char *name,
+ int nlen)
+{
+ return str->len == nlen && !memcmp(str->name, name, nlen);
+}
+
+/* returns found or not */
+int au_nhash_test_known_wh(struct au_nhash *whlist, char *name, int nlen)
+{
+ struct hlist_head *head;
+ struct au_vdir_wh *pos;
+ struct au_vdir_destr *str;
+
+ head = au_name_hash(whlist, name, nlen);
+ hlist_for_each_entry(pos, head, wh_hash) {
+ str = &pos->wh_str;
+ AuDbg("%.*s\n", str->len, str->name);
+ if (au_nhash_test_name(str, name, nlen))
+ return 1;
+ }
+ return 0;
+}
+
+/* returns found(true) or not */
+static int test_known(struct au_nhash *delist, char *name, int nlen)
+{
+ struct hlist_head *head;
+ struct au_vdir_dehstr *pos;
+ struct au_vdir_destr *str;
+
+ head = au_name_hash(delist, name, nlen);
+ hlist_for_each_entry(pos, head, hash) {
+ str = pos->str;
+ AuDbg("%.*s\n", str->len, str->name);
+ if (au_nhash_test_name(str, name, nlen))
+ return 1;
+ }
+ return 0;
+}
+
+static void au_shwh_init_wh(struct au_vdir_wh *wh, ino_t ino,
+ unsigned char d_type)
+{
+#ifdef CONFIG_AUFS_SHWH
+ wh->wh_ino = ino;
+ wh->wh_type = d_type;
+#endif
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_nhash_append_wh(struct au_nhash *whlist, char *name, int nlen, ino_t ino,
+ unsigned int d_type, aufs_bindex_t bindex,
+ unsigned char shwh)
+{
+ int err;
+ struct au_vdir_destr *str;
+ struct au_vdir_wh *wh;
+
+ AuDbg("%.*s\n", nlen, name);
+ AuDebugOn(!whlist->nh_num || !whlist->nh_head);
+
+ err = -ENOMEM;
+ wh = kmalloc(sizeof(*wh) + nlen, GFP_NOFS);
+ if (unlikely(!wh))
+ goto out;
+
+ err = 0;
+ wh->wh_bindex = bindex;
+ if (shwh)
+ au_shwh_init_wh(wh, ino, d_type);
+ str = &wh->wh_str;
+ str->len = nlen;
+ memcpy(str->name, name, nlen);
+ hlist_add_head(&wh->wh_hash, au_name_hash(whlist, name, nlen));
+ /* smp_mb(); */
+
+out:
+ return err;
+}
+
+static int append_deblk(struct au_vdir *vdir)
+{
+ int err;
+ unsigned long ul;
+ const unsigned int deblk_sz = vdir->vd_deblk_sz;
+ union au_vdir_deblk_p p, deblk_end;
+ unsigned char **o;
+
+ err = -ENOMEM;
+ o = au_krealloc(vdir->vd_deblk, sizeof(*o) * (vdir->vd_nblk + 1),
+ GFP_NOFS, /*may_shrink*/0);
+ if (unlikely(!o))
+ goto out;
+
+ vdir->vd_deblk = o;
+ p.deblk = kmalloc(deblk_sz, GFP_NOFS);
+ if (p.deblk) {
+ ul = vdir->vd_nblk++;
+ vdir->vd_deblk[ul] = p.deblk;
+ vdir->vd_last.ul = ul;
+ vdir->vd_last.p.deblk = p.deblk;
+ deblk_end.deblk = p.deblk + deblk_sz;
+ err = set_deblk_end(&p, &deblk_end);
+ }
+
+out:
+ return err;
+}
+
+static int append_de(struct au_vdir *vdir, char *name, int nlen, ino_t ino,
+ unsigned int d_type, struct au_nhash *delist)
+{
+ int err;
+ unsigned int sz;
+ const unsigned int deblk_sz = vdir->vd_deblk_sz;
+ union au_vdir_deblk_p p, *room, deblk_end;
+ struct au_vdir_dehstr *dehstr;
+
+ p.deblk = last_deblk(vdir);
+ deblk_end.deblk = p.deblk + deblk_sz;
+ room = &vdir->vd_last.p;
+ AuDebugOn(room->deblk < p.deblk || deblk_end.deblk <= room->deblk
+ || !is_deblk_end(room, &deblk_end));
+
+ sz = calc_size(nlen);
+ if (unlikely(sz > deblk_end.deblk - room->deblk)) {
+ err = append_deblk(vdir);
+ if (unlikely(err))
+ goto out;
+
+ p.deblk = last_deblk(vdir);
+ deblk_end.deblk = p.deblk + deblk_sz;
+ /* smp_mb(); */
+ AuDebugOn(room->deblk != p.deblk);
+ }
+
+ err = -ENOMEM;
+ dehstr = au_cache_alloc_vdir_dehstr();
+ if (unlikely(!dehstr))
+ goto out;
+
+ dehstr->str = &room->de->de_str;
+ hlist_add_head(&dehstr->hash, au_name_hash(delist, name, nlen));
+ room->de->de_ino = ino;
+ room->de->de_type = d_type;
+ room->de->de_str.len = nlen;
+ memcpy(room->de->de_str.name, name, nlen);
+
+ err = 0;
+ room->deblk += sz;
+ if (unlikely(set_deblk_end(room, &deblk_end)))
+ err = append_deblk(vdir);
+ /* smp_mb(); */
+
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_vdir_free(struct au_vdir *vdir)
+{
+ unsigned char **deblk;
+
+ deblk = vdir->vd_deblk;
+ while (vdir->vd_nblk--)
+ au_kfree_try_rcu(*deblk++);
+ au_kfree_try_rcu(vdir->vd_deblk);
+ au_cache_free_vdir(vdir);
+}
+
+static struct au_vdir *alloc_vdir(struct file *file)
+{
+ struct au_vdir *vdir;
+ struct super_block *sb;
+ int err;
+
+ sb = file->f_path.dentry->d_sb;
+ SiMustAnyLock(sb);
+
+ err = -ENOMEM;
+ vdir = au_cache_alloc_vdir();
+ if (unlikely(!vdir))
+ goto out;
+
+ vdir->vd_deblk = kzalloc(sizeof(*vdir->vd_deblk), GFP_NOFS);
+ if (unlikely(!vdir->vd_deblk))
+ goto out_free;
+
+ vdir->vd_deblk_sz = au_sbi(sb)->si_rdblk;
+ if (!vdir->vd_deblk_sz) {
+ /* estimate the appropriate size for deblk */
+ vdir->vd_deblk_sz = au_dir_size(file, /*dentry*/NULL);
+ /* pr_info("vd_deblk_sz %u\n", vdir->vd_deblk_sz); */
+ }
+ vdir->vd_nblk = 0;
+ vdir->vd_version = 0;
+ vdir->vd_jiffy = 0;
+ err = append_deblk(vdir);
+ if (!err)
+ return vdir; /* success */
+
+ au_kfree_try_rcu(vdir->vd_deblk);
+
+out_free:
+ au_cache_free_vdir(vdir);
+out:
+ vdir = ERR_PTR(err);
+ return vdir;
+}
+
+static int reinit_vdir(struct au_vdir *vdir)
+{
+ int err;
+ union au_vdir_deblk_p p, deblk_end;
+
+ while (vdir->vd_nblk > 1) {
+ au_kfree_try_rcu(vdir->vd_deblk[vdir->vd_nblk - 1]);
+ /* vdir->vd_deblk[vdir->vd_nblk - 1] = NULL; */
+ vdir->vd_nblk--;
+ }
+ p.deblk = vdir->vd_deblk[0];
+ deblk_end.deblk = p.deblk + vdir->vd_deblk_sz;
+ err = set_deblk_end(&p, &deblk_end);
+ /* keep vd_dblk_sz */
+ vdir->vd_last.ul = 0;
+ vdir->vd_last.p.deblk = vdir->vd_deblk[0];
+ vdir->vd_version = 0;
+ vdir->vd_jiffy = 0;
+ /* smp_mb(); */
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#define AuFillVdir_CALLED 1
+#define AuFillVdir_WHABLE (1 << 1)
+#define AuFillVdir_SHWH (1 << 2)
+#define au_ftest_fillvdir(flags, name) ((flags) & AuFillVdir_##name)
+#define au_fset_fillvdir(flags, name) \
+ do { (flags) |= AuFillVdir_##name; } while (0)
+#define au_fclr_fillvdir(flags, name) \
+ do { (flags) &= ~AuFillVdir_##name; } while (0)
+
+#ifndef CONFIG_AUFS_SHWH
+#undef AuFillVdir_SHWH
+#define AuFillVdir_SHWH 0
+#endif
+
+struct fillvdir_arg {
+ struct dir_context ctx;
+ struct file *file;
+ struct au_vdir *vdir;
+ struct au_nhash delist;
+ struct au_nhash whlist;
+ aufs_bindex_t bindex;
+ unsigned int flags;
+ int err;
+};
+
+static int fillvdir(struct dir_context *ctx, const char *__name, int nlen,
+ loff_t offset __maybe_unused, u64 h_ino,
+ unsigned int d_type)
+{
+ struct fillvdir_arg *arg = container_of(ctx, struct fillvdir_arg, ctx);
+ char *name = (void *)__name;
+ struct super_block *sb;
+ ino_t ino;
+ const unsigned char shwh = !!au_ftest_fillvdir(arg->flags, SHWH);
+
+ arg->err = 0;
+ sb = arg->file->f_path.dentry->d_sb;
+ au_fset_fillvdir(arg->flags, CALLED);
+ /* smp_mb(); */
+ if (nlen <= AUFS_WH_PFX_LEN
+ || memcmp(name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) {
+ if (test_known(&arg->delist, name, nlen)
+ || au_nhash_test_known_wh(&arg->whlist, name, nlen))
+ goto out; /* already exists or whiteouted */
+
+ arg->err = au_ino(sb, arg->bindex, h_ino, d_type, &ino);
+ if (!arg->err) {
+ if (unlikely(nlen > AUFS_MAX_NAMELEN))
+ d_type = DT_UNKNOWN;
+ arg->err = append_de(arg->vdir, name, nlen, ino,
+ d_type, &arg->delist);
+ }
+ } else if (au_ftest_fillvdir(arg->flags, WHABLE)) {
+ name += AUFS_WH_PFX_LEN;
+ nlen -= AUFS_WH_PFX_LEN;
+ if (au_nhash_test_known_wh(&arg->whlist, name, nlen))
+ goto out; /* already whiteouted */
+
+ ino = 0; /* just to suppress a warning */
+ if (shwh)
+ arg->err = au_wh_ino(sb, arg->bindex, h_ino, d_type,
+ &ino);
+ if (!arg->err) {
+ if (nlen <= AUFS_MAX_NAMELEN + AUFS_WH_PFX_LEN)
+ d_type = DT_UNKNOWN;
+ arg->err = au_nhash_append_wh
+ (&arg->whlist, name, nlen, ino, d_type,
+ arg->bindex, shwh);
+ }
+ }
+
+out:
+ if (!arg->err)
+ arg->vdir->vd_jiffy = jiffies;
+ /* smp_mb(); */
+ AuTraceErr(arg->err);
+ return arg->err;
+}
+
+static int au_handle_shwh(struct super_block *sb, struct au_vdir *vdir,
+ struct au_nhash *whlist, struct au_nhash *delist)
+{
+#ifdef CONFIG_AUFS_SHWH
+ int err;
+ unsigned int nh, u;
+ struct hlist_head *head;
+ struct au_vdir_wh *pos;
+ struct hlist_node *n;
+ char *p, *o;
+ struct au_vdir_destr *destr;
+
+ AuDebugOn(!au_opt_test(au_mntflags(sb), SHWH));
+
+ err = -ENOMEM;
+ o = p = (void *)__get_free_page(GFP_NOFS);
+ if (unlikely(!p))
+ goto out;
+
+ err = 0;
+ nh = whlist->nh_num;
+ memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN);
+ p += AUFS_WH_PFX_LEN;
+ for (u = 0; u < nh; u++) {
+ head = whlist->nh_head + u;
+ hlist_for_each_entry_safe(pos, n, head, wh_hash) {
+ destr = &pos->wh_str;
+ memcpy(p, destr->name, destr->len);
+ err = append_de(vdir, o, destr->len + AUFS_WH_PFX_LEN,
+ pos->wh_ino, pos->wh_type, delist);
+ if (unlikely(err))
+ break;
+ }
+ }
+
+ free_page((unsigned long)o);
+
+out:
+ AuTraceErr(err);
+ return err;
+#else
+ return 0;
+#endif
+}
+
+static int au_do_read_vdir(struct fillvdir_arg *arg)
+{
+ int err;
+ unsigned int rdhash;
+ loff_t offset;
+ aufs_bindex_t bbot, bindex, btop;
+ unsigned char shwh;
+ struct file *hf, *file;
+ struct super_block *sb;
+
+ file = arg->file;
+ sb = file->f_path.dentry->d_sb;
+ SiMustAnyLock(sb);
+
+ rdhash = au_sbi(sb)->si_rdhash;
+ if (!rdhash)
+ rdhash = au_rdhash_est(au_dir_size(file, /*dentry*/NULL));
+ err = au_nhash_alloc(&arg->delist, rdhash, GFP_NOFS);
+ if (unlikely(err))
+ goto out;
+ err = au_nhash_alloc(&arg->whlist, rdhash, GFP_NOFS);
+ if (unlikely(err))
+ goto out_delist;
+
+ err = 0;
+ arg->flags = 0;
+ shwh = 0;
+ if (au_opt_test(au_mntflags(sb), SHWH)) {
+ shwh = 1;
+ au_fset_fillvdir(arg->flags, SHWH);
+ }
+ btop = au_fbtop(file);
+ bbot = au_fbbot_dir(file);
+ for (bindex = btop; !err && bindex <= bbot; bindex++) {
+ hf = au_hf_dir(file, bindex);
+ if (!hf)
+ continue;
+
+ offset = vfsub_llseek(hf, 0, SEEK_SET);
+ err = offset;
+ if (unlikely(offset))
+ break;
+
+ arg->bindex = bindex;
+ au_fclr_fillvdir(arg->flags, WHABLE);
+ if (shwh
+ || (bindex != bbot
+ && au_br_whable(au_sbr_perm(sb, bindex))))
+ au_fset_fillvdir(arg->flags, WHABLE);
+ do {
+ arg->err = 0;
+ au_fclr_fillvdir(arg->flags, CALLED);
+ /* smp_mb(); */
+ err = vfsub_iterate_dir(hf, &arg->ctx);
+ if (err >= 0)
+ err = arg->err;
+ } while (!err && au_ftest_fillvdir(arg->flags, CALLED));
+
+ /*
+ * dir_relax() may be good for concurrency, but aufs should not
+ * use it since it will cause a lockdep problem.
+ */
+ }
+
+ if (!err && shwh)
+ err = au_handle_shwh(sb, arg->vdir, &arg->whlist, &arg->delist);
+
+ au_nhash_wh_free(&arg->whlist);
+
+out_delist:
+ au_nhash_de_free(&arg->delist);
+out:
+ return err;
+}
+
+static int read_vdir(struct file *file, int may_read)
+{
+ int err;
+ unsigned long expire;
+ unsigned char do_read;
+ struct fillvdir_arg arg = {
+ .ctx = {
+ .actor = fillvdir
+ }
+ };
+ struct inode *inode;
+ struct au_vdir *vdir, *allocated;
+
+ err = 0;
+ inode = file_inode(file);
+ IMustLock(inode);
+ IiMustWriteLock(inode);
+ SiMustAnyLock(inode->i_sb);
+
+ allocated = NULL;
+ do_read = 0;
+ expire = au_sbi(inode->i_sb)->si_rdcache;
+ vdir = au_ivdir(inode);
+ if (!vdir) {
+ do_read = 1;
+ vdir = alloc_vdir(file);
+ err = PTR_ERR(vdir);
+ if (IS_ERR(vdir))
+ goto out;
+ err = 0;
+ allocated = vdir;
+ } else if (may_read
+ && (!inode_eq_iversion(inode, vdir->vd_version)
+ || time_after(jiffies, vdir->vd_jiffy + expire))) {
+ do_read = 1;
+ err = reinit_vdir(vdir);
+ if (unlikely(err))
+ goto out;
+ }
+
+ if (!do_read)
+ return 0; /* success */
+
+ arg.file = file;
+ arg.vdir = vdir;
+ err = au_do_read_vdir(&arg);
+ if (!err) {
+ /* file->f_pos = 0; */ /* todo: ctx->pos? */
+ vdir->vd_version = inode_query_iversion(inode);
+ vdir->vd_last.ul = 0;
+ vdir->vd_last.p.deblk = vdir->vd_deblk[0];
+ if (allocated)
+ au_set_ivdir(inode, allocated);
+ } else if (allocated)
+ au_vdir_free(allocated);
+
+out:
+ return err;
+}
+
+static int copy_vdir(struct au_vdir *tgt, struct au_vdir *src)
+{
+ int err, rerr;
+ unsigned long ul, n;
+ const unsigned int deblk_sz = src->vd_deblk_sz;
+
+ AuDebugOn(tgt->vd_nblk != 1);
+
+ err = -ENOMEM;
+ if (tgt->vd_nblk < src->vd_nblk) {
+ unsigned char **p;
+
+ p = au_krealloc(tgt->vd_deblk, sizeof(*p) * src->vd_nblk,
+ GFP_NOFS, /*may_shrink*/0);
+ if (unlikely(!p))
+ goto out;
+ tgt->vd_deblk = p;
+ }
+
+ if (tgt->vd_deblk_sz != deblk_sz) {
+ unsigned char *p;
+
+ tgt->vd_deblk_sz = deblk_sz;
+ p = au_krealloc(tgt->vd_deblk[0], deblk_sz, GFP_NOFS,
+ /*may_shrink*/1);
+ if (unlikely(!p))
+ goto out;
+ tgt->vd_deblk[0] = p;
+ }
+ memcpy(tgt->vd_deblk[0], src->vd_deblk[0], deblk_sz);
+ tgt->vd_version = src->vd_version;
+ tgt->vd_jiffy = src->vd_jiffy;
+
+ n = src->vd_nblk;
+ for (ul = 1; ul < n; ul++) {
+ tgt->vd_deblk[ul] = kmemdup(src->vd_deblk[ul], deblk_sz,
+ GFP_NOFS);
+ if (unlikely(!tgt->vd_deblk[ul]))
+ goto out;
+ tgt->vd_nblk++;
+ }
+ tgt->vd_nblk = n;
+ tgt->vd_last.ul = tgt->vd_last.ul;
+ tgt->vd_last.p.deblk = tgt->vd_deblk[tgt->vd_last.ul];
+ tgt->vd_last.p.deblk += src->vd_last.p.deblk
+ - src->vd_deblk[src->vd_last.ul];
+ /* smp_mb(); */
+ return 0; /* success */
+
+out:
+ rerr = reinit_vdir(tgt);
+ BUG_ON(rerr);
+ return err;
+}
+
+int au_vdir_init(struct file *file)
+{
+ int err;
+ struct inode *inode;
+ struct au_vdir *vdir_cache, *allocated;
+
+ /* test file->f_pos here instead of ctx->pos */
+ err = read_vdir(file, !file->f_pos);
+ if (unlikely(err))
+ goto out;
+
+ allocated = NULL;
+ vdir_cache = au_fvdir_cache(file);
+ if (!vdir_cache) {
+ vdir_cache = alloc_vdir(file);
+ err = PTR_ERR(vdir_cache);
+ if (IS_ERR(vdir_cache))
+ goto out;
+ allocated = vdir_cache;
+ } else if (!file->f_pos && vdir_cache->vd_version != file->f_version) {
+ /* test file->f_pos here instead of ctx->pos */
+ err = reinit_vdir(vdir_cache);
+ if (unlikely(err))
+ goto out;
+ } else
+ return 0; /* success */
+
+ inode = file_inode(file);
+ err = copy_vdir(vdir_cache, au_ivdir(inode));
+ if (!err) {
+ file->f_version = inode_query_iversion(inode);
+ if (allocated)
+ au_set_fvdir_cache(file, allocated);
+ } else if (allocated)
+ au_vdir_free(allocated);
+
+out:
+ return err;
+}
+
+static loff_t calc_offset(struct au_vdir *vdir)
+{
+ loff_t offset;
+ union au_vdir_deblk_p p;
+
+ p.deblk = vdir->vd_deblk[vdir->vd_last.ul];
+ offset = vdir->vd_last.p.deblk - p.deblk;
+ offset += vdir->vd_deblk_sz * vdir->vd_last.ul;
+ return offset;
+}
+
+/* returns true or false */
+static int seek_vdir(struct file *file, struct dir_context *ctx)
+{
+ int valid;
+ unsigned int deblk_sz;
+ unsigned long ul, n;
+ loff_t offset;
+ union au_vdir_deblk_p p, deblk_end;
+ struct au_vdir *vdir_cache;
+
+ valid = 1;
+ vdir_cache = au_fvdir_cache(file);
+ offset = calc_offset(vdir_cache);
+ AuDbg("offset %lld\n", offset);
+ if (ctx->pos == offset)
+ goto out;
+
+ vdir_cache->vd_last.ul = 0;
+ vdir_cache->vd_last.p.deblk = vdir_cache->vd_deblk[0];
+ if (!ctx->pos)
+ goto out;
+
+ valid = 0;
+ deblk_sz = vdir_cache->vd_deblk_sz;
+ ul = div64_u64(ctx->pos, deblk_sz);
+ AuDbg("ul %lu\n", ul);
+ if (ul >= vdir_cache->vd_nblk)
+ goto out;
+
+ n = vdir_cache->vd_nblk;
+ for (; ul < n; ul++) {
+ p.deblk = vdir_cache->vd_deblk[ul];
+ deblk_end.deblk = p.deblk + deblk_sz;
+ offset = ul;
+ offset *= deblk_sz;
+ while (!is_deblk_end(&p, &deblk_end) && offset < ctx->pos) {
+ unsigned int l;
+
+ l = calc_size(p.de->de_str.len);
+ offset += l;
+ p.deblk += l;
+ }
+ if (!is_deblk_end(&p, &deblk_end)) {
+ valid = 1;
+ vdir_cache->vd_last.ul = ul;
+ vdir_cache->vd_last.p = p;
+ break;
+ }
+ }
+
+out:
+ /* smp_mb(); */
+ if (!valid)
+ AuDbg("valid %d\n", !valid);
+ return valid;
+}
+
+int au_vdir_fill_de(struct file *file, struct dir_context *ctx)
+{
+ unsigned int l, deblk_sz;
+ union au_vdir_deblk_p deblk_end;
+ struct au_vdir *vdir_cache;
+ struct au_vdir_de *de;
+
+ if (!seek_vdir(file, ctx))
+ return 0;
+
+ vdir_cache = au_fvdir_cache(file);
+ deblk_sz = vdir_cache->vd_deblk_sz;
+ while (1) {
+ deblk_end.deblk = vdir_cache->vd_deblk[vdir_cache->vd_last.ul];
+ deblk_end.deblk += deblk_sz;
+ while (!is_deblk_end(&vdir_cache->vd_last.p, &deblk_end)) {
+ de = vdir_cache->vd_last.p.de;
+ AuDbg("%.*s, off%lld, i%lu, dt%d\n",
+ de->de_str.len, de->de_str.name, ctx->pos,
+ (unsigned long)de->de_ino, de->de_type);
+ if (unlikely(!dir_emit(ctx, de->de_str.name,
+ de->de_str.len, de->de_ino,
+ de->de_type))) {
+ /* todo: ignore the error caused by udba? */
+ /* return err; */
+ return 0;
+ }
+
+ l = calc_size(de->de_str.len);
+ vdir_cache->vd_last.p.deblk += l;
+ ctx->pos += l;
+ }
+ if (vdir_cache->vd_last.ul < vdir_cache->vd_nblk - 1) {
+ vdir_cache->vd_last.ul++;
+ vdir_cache->vd_last.p.deblk
+ = vdir_cache->vd_deblk[vdir_cache->vd_last.ul];
+ ctx->pos = deblk_sz * vdir_cache->vd_last.ul;
+ continue;
+ }
+ break;
+ }
+
+ /* smp_mb(); */
+ return 0;
+}
diff --git a/fs/aufs/vfsub.c b/fs/aufs/vfsub.c
new file mode 100644
index 0000000000..d6945e2259
--- /dev/null
+++ b/fs/aufs/vfsub.c
@@ -0,0 +1,902 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * sub-routines for VFS
+ */
+
+#include <linux/mnt_namespace.h>
+#include <linux/namei.h>
+#include <linux/nsproxy.h>
+#include <linux/security.h>
+#include <linux/splice.h>
+#include "aufs.h"
+
+#ifdef CONFIG_AUFS_BR_FUSE
+int vfsub_test_mntns(struct vfsmount *mnt, struct super_block *h_sb)
+{
+ if (!au_test_fuse(h_sb) || !au_userns)
+ return 0;
+
+ return is_current_mnt_ns(mnt) ? 0 : -EACCES;
+}
+#endif
+
+int vfsub_sync_filesystem(struct super_block *h_sb, int wait)
+{
+ int err;
+
+ lockdep_off();
+ down_read(&h_sb->s_umount);
+ err = __sync_filesystem(h_sb, wait);
+ up_read(&h_sb->s_umount);
+ lockdep_on();
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int vfsub_update_h_iattr(struct path *h_path, int *did)
+{
+ int err;
+ struct kstat st;
+ struct super_block *h_sb;
+
+ /* for remote fs, leave work for its getattr or d_revalidate */
+ /* for bad i_attr fs, handle them in aufs_getattr() */
+ /* still some fs may acquire i_mutex. we need to skip them */
+ err = 0;
+ if (!did)
+ did = &err;
+ h_sb = h_path->dentry->d_sb;
+ *did = (!au_test_fs_remote(h_sb) && au_test_fs_refresh_iattr(h_sb));
+ if (*did)
+ err = vfsub_getattr(h_path, &st);
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct file *vfsub_dentry_open(struct path *path, int flags)
+{
+ struct file *file;
+
+ file = dentry_open(path, flags /* | __FMODE_NONOTIFY */,
+ current_cred());
+ if (!IS_ERR_OR_NULL(file)
+ && (file->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
+ i_readcount_inc(d_inode(path->dentry));
+
+ return file;
+}
+
+struct file *vfsub_filp_open(const char *path, int oflags, int mode)
+{
+ struct file *file;
+
+ lockdep_off();
+ file = filp_open(path,
+ oflags /* | __FMODE_NONOTIFY */,
+ mode);
+ lockdep_on();
+ if (IS_ERR(file))
+ goto out;
+ vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
+
+out:
+ return file;
+}
+
+/*
+ * Ideally this function should call VFS:do_last() in order to keep all its
+ * checkings. But it is very hard for aufs to regenerate several VFS internal
+ * structure such as nameidata. This is a second (or third) best approach.
+ * cf. linux/fs/namei.c:do_last(), lookup_open() and atomic_open().
+ */
+int vfsub_atomic_open(struct inode *dir, struct dentry *dentry,
+ struct vfsub_aopen_args *args)
+{
+ int err;
+ struct au_branch *br = args->br;
+ struct file *file = args->file;
+ /* copied from linux/fs/namei.c:atomic_open() */
+ struct dentry *const DENTRY_NOT_SET = (void *)-1UL;
+
+ IMustLock(dir);
+ AuDebugOn(!dir->i_op->atomic_open);
+
+ err = au_br_test_oflag(args->open_flag, br);
+ if (unlikely(err))
+ goto out;
+
+ au_lcnt_inc(&br->br_nfiles);
+ file->f_path.dentry = DENTRY_NOT_SET;
+ file->f_path.mnt = au_br_mnt(br);
+ AuDbg("%ps\n", dir->i_op->atomic_open);
+ err = dir->i_op->atomic_open(dir, dentry, file, args->open_flag,
+ args->create_mode);
+ if (unlikely(err < 0)) {
+ au_lcnt_dec(&br->br_nfiles);
+ goto out;
+ }
+
+ /* temporary workaround for nfsv4 branch */
+ if (au_test_nfs(dir->i_sb))
+ nfs_mark_for_revalidate(dir);
+
+ if (file->f_mode & FMODE_CREATED)
+ fsnotify_create(dir, dentry);
+ if (!(file->f_mode & FMODE_OPENED)) {
+ au_lcnt_dec(&br->br_nfiles);
+ goto out;
+ }
+
+ /* todo: call VFS:may_open() here */
+ /* todo: ima_file_check() too? */
+ if (!err && (args->open_flag & __FMODE_EXEC))
+ err = deny_write_access(file);
+ if (!err)
+ fsnotify_open(file);
+ else
+ au_lcnt_dec(&br->br_nfiles);
+ /* note that the file is created and still opened */
+
+out:
+ return err;
+}
+
+int vfsub_kern_path(const char *name, unsigned int flags, struct path *path)
+{
+ int err;
+
+ err = kern_path(name, flags, path);
+ if (!err && d_is_positive(path->dentry))
+ vfsub_update_h_iattr(path, /*did*/NULL); /*ignore*/
+ return err;
+}
+
+struct dentry *vfsub_lookup_one_len_unlocked(const char *name,
+ struct dentry *parent, int len)
+{
+ struct path path = {
+ .mnt = NULL
+ };
+
+ path.dentry = lookup_one_len_unlocked(name, parent, len);
+ if (IS_ERR(path.dentry))
+ goto out;
+ if (d_is_positive(path.dentry))
+ vfsub_update_h_iattr(&path, /*did*/NULL); /*ignore*/
+
+out:
+ AuTraceErrPtr(path.dentry);
+ return path.dentry;
+}
+
+struct dentry *vfsub_lookup_one_len(const char *name, struct dentry *parent,
+ int len)
+{
+ struct path path = {
+ .mnt = NULL
+ };
+
+ /* VFS checks it too, but by WARN_ON_ONCE() */
+ IMustLock(d_inode(parent));
+
+ path.dentry = lookup_one_len(name, parent, len);
+ if (IS_ERR(path.dentry))
+ goto out;
+ if (d_is_positive(path.dentry))
+ vfsub_update_h_iattr(&path, /*did*/NULL); /*ignore*/
+
+out:
+ AuTraceErrPtr(path.dentry);
+ return path.dentry;
+}
+
+void vfsub_call_lkup_one(void *args)
+{
+ struct vfsub_lkup_one_args *a = args;
+ *a->errp = vfsub_lkup_one(a->name, a->parent);
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct dentry *vfsub_lock_rename(struct dentry *d1, struct au_hinode *hdir1,
+ struct dentry *d2, struct au_hinode *hdir2)
+{
+ struct dentry *d;
+
+ lockdep_off();
+ d = lock_rename(d1, d2);
+ lockdep_on();
+ au_hn_suspend(hdir1);
+ if (hdir1 != hdir2)
+ au_hn_suspend(hdir2);
+
+ return d;
+}
+
+void vfsub_unlock_rename(struct dentry *d1, struct au_hinode *hdir1,
+ struct dentry *d2, struct au_hinode *hdir2)
+{
+ au_hn_resume(hdir1);
+ if (hdir1 != hdir2)
+ au_hn_resume(hdir2);
+ lockdep_off();
+ unlock_rename(d1, d2);
+ lockdep_on();
+}
+
+/* ---------------------------------------------------------------------- */
+
+int vfsub_create(struct inode *dir, struct path *path, int mode, bool want_excl)
+{
+ int err;
+ struct dentry *d;
+
+ IMustLock(dir);
+
+ d = path->dentry;
+ path->dentry = d->d_parent;
+ err = security_path_mknod(path, d, mode, 0);
+ path->dentry = d;
+ if (unlikely(err))
+ goto out;
+
+ lockdep_off();
+ err = vfs_create(dir, path->dentry, mode, want_excl);
+ lockdep_on();
+ if (!err) {
+ struct path tmp = *path;
+ int did;
+
+ vfsub_update_h_iattr(&tmp, &did);
+ if (did) {
+ tmp.dentry = path->dentry->d_parent;
+ vfsub_update_h_iattr(&tmp, /*did*/NULL);
+ }
+ /*ignore*/
+ }
+
+out:
+ return err;
+}
+
+int vfsub_symlink(struct inode *dir, struct path *path, const char *symname)
+{
+ int err;
+ struct dentry *d;
+
+ IMustLock(dir);
+
+ d = path->dentry;
+ path->dentry = d->d_parent;
+ err = security_path_symlink(path, d, symname);
+ path->dentry = d;
+ if (unlikely(err))
+ goto out;
+
+ lockdep_off();
+ err = vfs_symlink(dir, path->dentry, symname);
+ lockdep_on();
+ if (!err) {
+ struct path tmp = *path;
+ int did;
+
+ vfsub_update_h_iattr(&tmp, &did);
+ if (did) {
+ tmp.dentry = path->dentry->d_parent;
+ vfsub_update_h_iattr(&tmp, /*did*/NULL);
+ }
+ /*ignore*/
+ }
+
+out:
+ return err;
+}
+
+int vfsub_mknod(struct inode *dir, struct path *path, int mode, dev_t dev)
+{
+ int err;
+ struct dentry *d;
+
+ IMustLock(dir);
+
+ d = path->dentry;
+ path->dentry = d->d_parent;
+ err = security_path_mknod(path, d, mode, new_encode_dev(dev));
+ path->dentry = d;
+ if (unlikely(err))
+ goto out;
+
+ lockdep_off();
+ err = vfs_mknod(dir, path->dentry, mode, dev);
+ lockdep_on();
+ if (!err) {
+ struct path tmp = *path;
+ int did;
+
+ vfsub_update_h_iattr(&tmp, &did);
+ if (did) {
+ tmp.dentry = path->dentry->d_parent;
+ vfsub_update_h_iattr(&tmp, /*did*/NULL);
+ }
+ /*ignore*/
+ }
+
+out:
+ return err;
+}
+
+static int au_test_nlink(struct inode *inode)
+{
+ const unsigned int link_max = UINT_MAX >> 1; /* rough margin */
+
+ if (!au_test_fs_no_limit_nlink(inode->i_sb)
+ || inode->i_nlink < link_max)
+ return 0;
+ return -EMLINK;
+}
+
+int vfsub_link(struct dentry *src_dentry, struct inode *dir, struct path *path,
+ struct inode **delegated_inode)
+{
+ int err;
+ struct dentry *d;
+
+ IMustLock(dir);
+
+ err = au_test_nlink(d_inode(src_dentry));
+ if (unlikely(err))
+ return err;
+
+ /* we don't call may_linkat() */
+ d = path->dentry;
+ path->dentry = d->d_parent;
+ err = security_path_link(src_dentry, path, d);
+ path->dentry = d;
+ if (unlikely(err))
+ goto out;
+
+ lockdep_off();
+ err = vfs_link(src_dentry, dir, path->dentry, delegated_inode);
+ lockdep_on();
+ if (!err) {
+ struct path tmp = *path;
+ int did;
+
+ /* fuse has different memory inode for the same inumber */
+ vfsub_update_h_iattr(&tmp, &did);
+ if (did) {
+ tmp.dentry = path->dentry->d_parent;
+ vfsub_update_h_iattr(&tmp, /*did*/NULL);
+ tmp.dentry = src_dentry;
+ vfsub_update_h_iattr(&tmp, /*did*/NULL);
+ }
+ /*ignore*/
+ }
+
+out:
+ return err;
+}
+
+int vfsub_rename(struct inode *src_dir, struct dentry *src_dentry,
+ struct inode *dir, struct path *path,
+ struct inode **delegated_inode, unsigned int flags)
+{
+ int err;
+ struct path tmp = {
+ .mnt = path->mnt
+ };
+ struct dentry *d;
+
+ IMustLock(dir);
+ IMustLock(src_dir);
+
+ d = path->dentry;
+ path->dentry = d->d_parent;
+ tmp.dentry = src_dentry->d_parent;
+ err = security_path_rename(&tmp, src_dentry, path, d, /*flags*/0);
+ path->dentry = d;
+ if (unlikely(err))
+ goto out;
+
+ lockdep_off();
+ err = vfs_rename(src_dir, src_dentry, dir, path->dentry,
+ delegated_inode, flags);
+ lockdep_on();
+ if (!err) {
+ int did;
+
+ tmp.dentry = d->d_parent;
+ vfsub_update_h_iattr(&tmp, &did);
+ if (did) {
+ tmp.dentry = src_dentry;
+ vfsub_update_h_iattr(&tmp, /*did*/NULL);
+ tmp.dentry = src_dentry->d_parent;
+ vfsub_update_h_iattr(&tmp, /*did*/NULL);
+ }
+ /*ignore*/
+ }
+
+out:
+ return err;
+}
+
+int vfsub_mkdir(struct inode *dir, struct path *path, int mode)
+{
+ int err;
+ struct dentry *d;
+
+ IMustLock(dir);
+
+ d = path->dentry;
+ path->dentry = d->d_parent;
+ err = security_path_mkdir(path, d, mode);
+ path->dentry = d;
+ if (unlikely(err))
+ goto out;
+
+ lockdep_off();
+ err = vfs_mkdir(dir, path->dentry, mode);
+ lockdep_on();
+ if (!err) {
+ struct path tmp = *path;
+ int did;
+
+ vfsub_update_h_iattr(&tmp, &did);
+ if (did) {
+ tmp.dentry = path->dentry->d_parent;
+ vfsub_update_h_iattr(&tmp, /*did*/NULL);
+ }
+ /*ignore*/
+ }
+
+out:
+ return err;
+}
+
+int vfsub_rmdir(struct inode *dir, struct path *path)
+{
+ int err;
+ struct dentry *d;
+
+ IMustLock(dir);
+
+ d = path->dentry;
+ path->dentry = d->d_parent;
+ err = security_path_rmdir(path, d);
+ path->dentry = d;
+ if (unlikely(err))
+ goto out;
+
+ lockdep_off();
+ err = vfs_rmdir(dir, path->dentry);
+ lockdep_on();
+ if (!err) {
+ struct path tmp = {
+ .dentry = path->dentry->d_parent,
+ .mnt = path->mnt
+ };
+
+ vfsub_update_h_iattr(&tmp, /*did*/NULL); /*ignore*/
+ }
+
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* todo: support mmap_sem? */
+ssize_t vfsub_read_u(struct file *file, char __user *ubuf, size_t count,
+ loff_t *ppos)
+{
+ ssize_t err;
+
+ lockdep_off();
+ err = vfs_read(file, ubuf, count, ppos);
+ lockdep_on();
+ if (err >= 0)
+ vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
+ return err;
+}
+
+/* todo: kernel_read()? */
+ssize_t vfsub_read_k(struct file *file, void *kbuf, size_t count,
+ loff_t *ppos)
+{
+ ssize_t err;
+ mm_segment_t oldfs;
+ union {
+ void *k;
+ char __user *u;
+ } buf;
+
+ buf.k = kbuf;
+ oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ err = vfsub_read_u(file, buf.u, count, ppos);
+ set_fs(oldfs);
+ return err;
+}
+
+ssize_t vfsub_write_u(struct file *file, const char __user *ubuf, size_t count,
+ loff_t *ppos)
+{
+ ssize_t err;
+
+ lockdep_off();
+ err = vfs_write(file, ubuf, count, ppos);
+ lockdep_on();
+ if (err >= 0)
+ vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
+ return err;
+}
+
+ssize_t vfsub_write_k(struct file *file, void *kbuf, size_t count, loff_t *ppos)
+{
+ ssize_t err;
+ mm_segment_t oldfs;
+ union {
+ void *k;
+ const char __user *u;
+ } buf;
+
+ buf.k = kbuf;
+ oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ err = vfsub_write_u(file, buf.u, count, ppos);
+ set_fs(oldfs);
+ return err;
+}
+
+int vfsub_flush(struct file *file, fl_owner_t id)
+{
+ int err;
+
+ err = 0;
+ if (file->f_op->flush) {
+ if (!au_test_nfs(file->f_path.dentry->d_sb))
+ err = file->f_op->flush(file, id);
+ else {
+ lockdep_off();
+ err = file->f_op->flush(file, id);
+ lockdep_on();
+ }
+ if (!err)
+ vfsub_update_h_iattr(&file->f_path, /*did*/NULL);
+ /*ignore*/
+ }
+ return err;
+}
+
+int vfsub_iterate_dir(struct file *file, struct dir_context *ctx)
+{
+ int err;
+
+ AuDbg("%pD, ctx{%ps, %llu}\n", file, ctx->actor, ctx->pos);
+
+ lockdep_off();
+ err = iterate_dir(file, ctx);
+ lockdep_on();
+ if (err >= 0)
+ vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
+
+ return err;
+}
+
+long vfsub_splice_to(struct file *in, loff_t *ppos,
+ struct pipe_inode_info *pipe, size_t len,
+ unsigned int flags)
+{
+ long err;
+
+ lockdep_off();
+ err = do_splice_to(in, ppos, pipe, len, flags);
+ lockdep_on();
+ file_accessed(in);
+ if (err >= 0)
+ vfsub_update_h_iattr(&in->f_path, /*did*/NULL); /*ignore*/
+ return err;
+}
+
+long vfsub_splice_from(struct pipe_inode_info *pipe, struct file *out,
+ loff_t *ppos, size_t len, unsigned int flags)
+{
+ long err;
+
+ lockdep_off();
+ err = do_splice_from(pipe, out, ppos, len, flags);
+ lockdep_on();
+ if (err >= 0)
+ vfsub_update_h_iattr(&out->f_path, /*did*/NULL); /*ignore*/
+ return err;
+}
+
+int vfsub_fsync(struct file *file, struct path *path, int datasync)
+{
+ int err;
+
+ /* file can be NULL */
+ lockdep_off();
+ err = vfs_fsync(file, datasync);
+ lockdep_on();
+ if (!err) {
+ if (!path) {
+ AuDebugOn(!file);
+ path = &file->f_path;
+ }
+ vfsub_update_h_iattr(path, /*did*/NULL); /*ignore*/
+ }
+ return err;
+}
+
+/* cf. open.c:do_sys_truncate() and do_sys_ftruncate() */
+int vfsub_trunc(struct path *h_path, loff_t length, unsigned int attr,
+ struct file *h_file)
+{
+ int err;
+ struct inode *h_inode;
+ struct super_block *h_sb;
+
+ if (!h_file) {
+ err = vfsub_truncate(h_path, length);
+ goto out;
+ }
+
+ h_inode = d_inode(h_path->dentry);
+ h_sb = h_inode->i_sb;
+ lockdep_off();
+ sb_start_write(h_sb);
+ lockdep_on();
+ err = locks_verify_truncate(h_inode, h_file, length);
+ if (!err)
+ err = security_path_truncate(h_path);
+ if (!err) {
+ lockdep_off();
+ err = do_truncate(h_path->dentry, length, attr, h_file);
+ lockdep_on();
+ }
+ lockdep_off();
+ sb_end_write(h_sb);
+ lockdep_on();
+
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct au_vfsub_mkdir_args {
+ int *errp;
+ struct inode *dir;
+ struct path *path;
+ int mode;
+};
+
+static void au_call_vfsub_mkdir(void *args)
+{
+ struct au_vfsub_mkdir_args *a = args;
+ *a->errp = vfsub_mkdir(a->dir, a->path, a->mode);
+}
+
+int vfsub_sio_mkdir(struct inode *dir, struct path *path, int mode)
+{
+ int err, do_sio, wkq_err;
+
+ do_sio = au_test_h_perm_sio(dir, MAY_EXEC | MAY_WRITE);
+ if (!do_sio) {
+ lockdep_off();
+ err = vfsub_mkdir(dir, path, mode);
+ lockdep_on();
+ } else {
+ struct au_vfsub_mkdir_args args = {
+ .errp = &err,
+ .dir = dir,
+ .path = path,
+ .mode = mode
+ };
+ wkq_err = au_wkq_wait(au_call_vfsub_mkdir, &args);
+ if (unlikely(wkq_err))
+ err = wkq_err;
+ }
+
+ return err;
+}
+
+struct au_vfsub_rmdir_args {
+ int *errp;
+ struct inode *dir;
+ struct path *path;
+};
+
+static void au_call_vfsub_rmdir(void *args)
+{
+ struct au_vfsub_rmdir_args *a = args;
+ *a->errp = vfsub_rmdir(a->dir, a->path);
+}
+
+int vfsub_sio_rmdir(struct inode *dir, struct path *path)
+{
+ int err, do_sio, wkq_err;
+
+ do_sio = au_test_h_perm_sio(dir, MAY_EXEC | MAY_WRITE);
+ if (!do_sio) {
+ lockdep_off();
+ err = vfsub_rmdir(dir, path);
+ lockdep_on();
+ } else {
+ struct au_vfsub_rmdir_args args = {
+ .errp = &err,
+ .dir = dir,
+ .path = path
+ };
+ wkq_err = au_wkq_wait(au_call_vfsub_rmdir, &args);
+ if (unlikely(wkq_err))
+ err = wkq_err;
+ }
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct notify_change_args {
+ int *errp;
+ struct path *path;
+ struct iattr *ia;
+ struct inode **delegated_inode;
+};
+
+static void call_notify_change(void *args)
+{
+ struct notify_change_args *a = args;
+ struct inode *h_inode;
+
+ h_inode = d_inode(a->path->dentry);
+ IMustLock(h_inode);
+
+ *a->errp = -EPERM;
+ if (!IS_IMMUTABLE(h_inode) && !IS_APPEND(h_inode)) {
+ lockdep_off();
+ *a->errp = notify_change(a->path->dentry, a->ia,
+ a->delegated_inode);
+ lockdep_on();
+ if (!*a->errp)
+ vfsub_update_h_iattr(a->path, /*did*/NULL); /*ignore*/
+ }
+ AuTraceErr(*a->errp);
+}
+
+int vfsub_notify_change(struct path *path, struct iattr *ia,
+ struct inode **delegated_inode)
+{
+ int err;
+ struct notify_change_args args = {
+ .errp = &err,
+ .path = path,
+ .ia = ia,
+ .delegated_inode = delegated_inode
+ };
+
+ call_notify_change(&args);
+
+ return err;
+}
+
+int vfsub_sio_notify_change(struct path *path, struct iattr *ia,
+ struct inode **delegated_inode)
+{
+ int err, wkq_err;
+ struct notify_change_args args = {
+ .errp = &err,
+ .path = path,
+ .ia = ia,
+ .delegated_inode = delegated_inode
+ };
+
+ wkq_err = au_wkq_wait(call_notify_change, &args);
+ if (unlikely(wkq_err))
+ err = wkq_err;
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct unlink_args {
+ int *errp;
+ struct inode *dir;
+ struct path *path;
+ struct inode **delegated_inode;
+};
+
+static void call_unlink(void *args)
+{
+ struct unlink_args *a = args;
+ struct dentry *d = a->path->dentry;
+ struct inode *h_inode;
+ const int stop_sillyrename = (au_test_nfs(d->d_sb)
+ && au_dcount(d) == 1);
+
+ IMustLock(a->dir);
+
+ a->path->dentry = d->d_parent;
+ *a->errp = security_path_unlink(a->path, d);
+ a->path->dentry = d;
+ if (unlikely(*a->errp))
+ return;
+
+ if (!stop_sillyrename)
+ dget(d);
+ h_inode = NULL;
+ if (d_is_positive(d)) {
+ h_inode = d_inode(d);
+ ihold(h_inode);
+ }
+
+ lockdep_off();
+ *a->errp = vfs_unlink(a->dir, d, a->delegated_inode);
+ lockdep_on();
+ if (!*a->errp) {
+ struct path tmp = {
+ .dentry = d->d_parent,
+ .mnt = a->path->mnt
+ };
+ vfsub_update_h_iattr(&tmp, /*did*/NULL); /*ignore*/
+ }
+
+ if (!stop_sillyrename)
+ dput(d);
+ if (h_inode)
+ iput(h_inode);
+
+ AuTraceErr(*a->errp);
+}
+
+/*
+ * @dir: must be locked.
+ * @dentry: target dentry.
+ */
+int vfsub_unlink(struct inode *dir, struct path *path,
+ struct inode **delegated_inode, int force)
+{
+ int err;
+ struct unlink_args args = {
+ .errp = &err,
+ .dir = dir,
+ .path = path,
+ .delegated_inode = delegated_inode
+ };
+
+ if (!force)
+ call_unlink(&args);
+ else {
+ int wkq_err;
+
+ wkq_err = au_wkq_wait(call_unlink, &args);
+ if (unlikely(wkq_err))
+ err = wkq_err;
+ }
+
+ return err;
+}
diff --git a/fs/aufs/vfsub.h b/fs/aufs/vfsub.h
new file mode 100644
index 0000000000..51e677c7f6
--- /dev/null
+++ b/fs/aufs/vfsub.h
@@ -0,0 +1,354 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * sub-routines for VFS
+ */
+
+#ifndef __AUFS_VFSUB_H__
+#define __AUFS_VFSUB_H__
+
+#ifdef __KERNEL__
+
+#include <linux/fs.h>
+#include <linux/mount.h>
+#include <linux/posix_acl.h>
+#include <linux/xattr.h>
+#include "debug.h"
+
+/* copied from linux/fs/internal.h */
+/* todo: BAD approach!! */
+extern void __mnt_drop_write(struct vfsmount *);
+extern struct file *alloc_empty_file(int, const struct cred *);
+
+/* ---------------------------------------------------------------------- */
+
+/* lock subclass for lower inode */
+/* default MAX_LOCKDEP_SUBCLASSES(8) is not enough */
+/* reduce? gave up. */
+enum {
+ AuLsc_I_Begin = I_MUTEX_PARENT2, /* 5 */
+ AuLsc_I_PARENT, /* lower inode, parent first */
+ AuLsc_I_PARENT2, /* copyup dirs */
+ AuLsc_I_PARENT3, /* copyup wh */
+ AuLsc_I_CHILD,
+ AuLsc_I_CHILD2,
+ AuLsc_I_End
+};
+
+/* to debug easier, do not make them inlined functions */
+#define MtxMustLock(mtx) AuDebugOn(!mutex_is_locked(mtx))
+#define IMustLock(i) AuDebugOn(!inode_is_locked(i))
+
+/* ---------------------------------------------------------------------- */
+
+static inline void vfsub_drop_nlink(struct inode *inode)
+{
+ AuDebugOn(!inode->i_nlink);
+ drop_nlink(inode);
+}
+
+static inline void vfsub_dead_dir(struct inode *inode)
+{
+ AuDebugOn(!S_ISDIR(inode->i_mode));
+ inode->i_flags |= S_DEAD;
+ clear_nlink(inode);
+}
+
+static inline int vfsub_native_ro(struct inode *inode)
+{
+ return sb_rdonly(inode->i_sb)
+ || IS_RDONLY(inode)
+ /* || IS_APPEND(inode) */
+ || IS_IMMUTABLE(inode);
+}
+
+#ifdef CONFIG_AUFS_BR_FUSE
+int vfsub_test_mntns(struct vfsmount *mnt, struct super_block *h_sb);
+#else
+AuStubInt0(vfsub_test_mntns, struct vfsmount *mnt, struct super_block *h_sb);
+#endif
+
+int vfsub_sync_filesystem(struct super_block *h_sb, int wait);
+
+/* ---------------------------------------------------------------------- */
+
+int vfsub_update_h_iattr(struct path *h_path, int *did);
+struct file *vfsub_dentry_open(struct path *path, int flags);
+struct file *vfsub_filp_open(const char *path, int oflags, int mode);
+struct au_branch;
+struct vfsub_aopen_args {
+ struct file *file;
+ unsigned int open_flag;
+ umode_t create_mode;
+ struct au_branch *br;
+};
+int vfsub_atomic_open(struct inode *dir, struct dentry *dentry,
+ struct vfsub_aopen_args *args);
+int vfsub_kern_path(const char *name, unsigned int flags, struct path *path);
+
+struct dentry *vfsub_lookup_one_len_unlocked(const char *name,
+ struct dentry *parent, int len);
+struct dentry *vfsub_lookup_one_len(const char *name, struct dentry *parent,
+ int len);
+
+struct vfsub_lkup_one_args {
+ struct dentry **errp;
+ struct qstr *name;
+ struct dentry *parent;
+};
+
+static inline struct dentry *vfsub_lkup_one(struct qstr *name,
+ struct dentry *parent)
+{
+ return vfsub_lookup_one_len(name->name, parent, name->len);
+}
+
+void vfsub_call_lkup_one(void *args);
+
+/* ---------------------------------------------------------------------- */
+
+static inline int vfsub_mnt_want_write(struct vfsmount *mnt)
+{
+ int err;
+
+ lockdep_off();
+ err = mnt_want_write(mnt);
+ lockdep_on();
+ return err;
+}
+
+static inline void vfsub_mnt_drop_write(struct vfsmount *mnt)
+{
+ lockdep_off();
+ mnt_drop_write(mnt);
+ lockdep_on();
+}
+
+#if 0 /* reserved */
+static inline void vfsub_mnt_drop_write_file(struct file *file)
+{
+ lockdep_off();
+ mnt_drop_write_file(file);
+ lockdep_on();
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+struct au_hinode;
+struct dentry *vfsub_lock_rename(struct dentry *d1, struct au_hinode *hdir1,
+ struct dentry *d2, struct au_hinode *hdir2);
+void vfsub_unlock_rename(struct dentry *d1, struct au_hinode *hdir1,
+ struct dentry *d2, struct au_hinode *hdir2);
+
+int vfsub_create(struct inode *dir, struct path *path, int mode,
+ bool want_excl);
+int vfsub_symlink(struct inode *dir, struct path *path,
+ const char *symname);
+int vfsub_mknod(struct inode *dir, struct path *path, int mode, dev_t dev);
+int vfsub_link(struct dentry *src_dentry, struct inode *dir,
+ struct path *path, struct inode **delegated_inode);
+int vfsub_rename(struct inode *src_hdir, struct dentry *src_dentry,
+ struct inode *hdir, struct path *path,
+ struct inode **delegated_inode, unsigned int flags);
+int vfsub_mkdir(struct inode *dir, struct path *path, int mode);
+int vfsub_rmdir(struct inode *dir, struct path *path);
+
+/* ---------------------------------------------------------------------- */
+
+ssize_t vfsub_read_u(struct file *file, char __user *ubuf, size_t count,
+ loff_t *ppos);
+ssize_t vfsub_read_k(struct file *file, void *kbuf, size_t count,
+ loff_t *ppos);
+ssize_t vfsub_write_u(struct file *file, const char __user *ubuf, size_t count,
+ loff_t *ppos);
+ssize_t vfsub_write_k(struct file *file, void *kbuf, size_t count,
+ loff_t *ppos);
+int vfsub_flush(struct file *file, fl_owner_t id);
+int vfsub_iterate_dir(struct file *file, struct dir_context *ctx);
+
+static inline loff_t vfsub_f_size_read(struct file *file)
+{
+ return i_size_read(file_inode(file));
+}
+
+static inline unsigned int vfsub_file_flags(struct file *file)
+{
+ unsigned int flags;
+
+ spin_lock(&file->f_lock);
+ flags = file->f_flags;
+ spin_unlock(&file->f_lock);
+
+ return flags;
+}
+
+static inline int vfsub_file_execed(struct file *file)
+{
+ /* todo: direct access f_flags */
+ return !!(vfsub_file_flags(file) & __FMODE_EXEC);
+}
+
+#if 0 /* reserved */
+static inline void vfsub_file_accessed(struct file *h_file)
+{
+ file_accessed(h_file);
+ vfsub_update_h_iattr(&h_file->f_path, /*did*/NULL); /*ignore*/
+}
+#endif
+
+#if 0 /* reserved */
+static inline void vfsub_touch_atime(struct vfsmount *h_mnt,
+ struct dentry *h_dentry)
+{
+ struct path h_path = {
+ .dentry = h_dentry,
+ .mnt = h_mnt
+ };
+ touch_atime(&h_path);
+ vfsub_update_h_iattr(&h_path, /*did*/NULL); /*ignore*/
+}
+#endif
+
+static inline int vfsub_update_time(struct inode *h_inode,
+ struct timespec64 *ts, int flags)
+{
+ return update_time(h_inode, ts, flags);
+ /* no vfsub_update_h_iattr() since we don't have struct path */
+}
+
+#ifdef CONFIG_FS_POSIX_ACL
+static inline int vfsub_acl_chmod(struct inode *h_inode, umode_t h_mode)
+{
+ int err;
+
+ err = posix_acl_chmod(h_inode, h_mode);
+ if (err == -EOPNOTSUPP)
+ err = 0;
+ return err;
+}
+#else
+AuStubInt0(vfsub_acl_chmod, struct inode *h_inode, umode_t h_mode);
+#endif
+
+long vfsub_splice_to(struct file *in, loff_t *ppos,
+ struct pipe_inode_info *pipe, size_t len,
+ unsigned int flags);
+long vfsub_splice_from(struct pipe_inode_info *pipe, struct file *out,
+ loff_t *ppos, size_t len, unsigned int flags);
+
+static inline long vfsub_truncate(struct path *path, loff_t length)
+{
+ long err;
+
+ lockdep_off();
+ err = vfs_truncate(path, length);
+ lockdep_on();
+ return err;
+}
+
+int vfsub_trunc(struct path *h_path, loff_t length, unsigned int attr,
+ struct file *h_file);
+int vfsub_fsync(struct file *file, struct path *path, int datasync);
+
+/*
+ * re-use branch fs's ioctl(FICLONE) while aufs itself doesn't support such
+ * ioctl.
+ */
+static inline loff_t vfsub_clone_file_range(struct file *src, struct file *dst,
+ loff_t len)
+{
+ loff_t err;
+
+ lockdep_off();
+ err = vfs_clone_file_range(src, 0, dst, 0, len, /*remap_flags*/0);
+ lockdep_on();
+
+ return err;
+}
+
+/* copy_file_range(2) is a systemcall */
+static inline ssize_t vfsub_copy_file_range(struct file *src, loff_t src_pos,
+ struct file *dst, loff_t dst_pos,
+ size_t len, unsigned int flags)
+{
+ ssize_t ssz;
+
+ lockdep_off();
+ ssz = vfs_copy_file_range(src, src_pos, dst, dst_pos, len, flags);
+ lockdep_on();
+
+ return ssz;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static inline loff_t vfsub_llseek(struct file *file, loff_t offset, int origin)
+{
+ loff_t err;
+
+ lockdep_off();
+ err = vfs_llseek(file, offset, origin);
+ lockdep_on();
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int vfsub_sio_mkdir(struct inode *dir, struct path *path, int mode);
+int vfsub_sio_rmdir(struct inode *dir, struct path *path);
+int vfsub_sio_notify_change(struct path *path, struct iattr *ia,
+ struct inode **delegated_inode);
+int vfsub_notify_change(struct path *path, struct iattr *ia,
+ struct inode **delegated_inode);
+int vfsub_unlink(struct inode *dir, struct path *path,
+ struct inode **delegated_inode, int force);
+
+static inline int vfsub_getattr(const struct path *path, struct kstat *st)
+{
+ return vfs_getattr(path, st, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static inline int vfsub_setxattr(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags)
+{
+ int err;
+
+ lockdep_off();
+ err = vfs_setxattr(dentry, name, value, size, flags);
+ lockdep_on();
+
+ return err;
+}
+
+static inline int vfsub_removexattr(struct dentry *dentry, const char *name)
+{
+ int err;
+
+ lockdep_off();
+ err = vfs_removexattr(dentry, name);
+ lockdep_on();
+
+ return err;
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_VFSUB_H__ */
diff --git a/fs/aufs/wbr_policy.c b/fs/aufs/wbr_policy.c
new file mode 100644
index 0000000000..64954145c0
--- /dev/null
+++ b/fs/aufs/wbr_policy.c
@@ -0,0 +1,830 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * policies for selecting one among multiple writable branches
+ */
+
+#include <linux/statfs.h>
+#include "aufs.h"
+
+/* subset of cpup_attr() */
+static noinline_for_stack
+int au_cpdown_attr(struct path *h_path, struct dentry *h_src)
+{
+ int err, sbits;
+ struct iattr ia;
+ struct inode *h_isrc;
+
+ h_isrc = d_inode(h_src);
+ ia.ia_valid = ATTR_FORCE | ATTR_MODE | ATTR_UID | ATTR_GID;
+ ia.ia_mode = h_isrc->i_mode;
+ ia.ia_uid = h_isrc->i_uid;
+ ia.ia_gid = h_isrc->i_gid;
+ sbits = !!(ia.ia_mode & (S_ISUID | S_ISGID));
+ au_cpup_attr_flags(d_inode(h_path->dentry), h_isrc->i_flags);
+ /* no delegation since it is just created */
+ err = vfsub_sio_notify_change(h_path, &ia, /*delegated*/NULL);
+
+ /* is this nfs only? */
+ if (!err && sbits && au_test_nfs(h_path->dentry->d_sb)) {
+ ia.ia_valid = ATTR_FORCE | ATTR_MODE;
+ ia.ia_mode = h_isrc->i_mode;
+ err = vfsub_sio_notify_change(h_path, &ia, /*delegated*/NULL);
+ }
+
+ return err;
+}
+
+#define AuCpdown_PARENT_OPQ 1
+#define AuCpdown_WHED (1 << 1)
+#define AuCpdown_MADE_DIR (1 << 2)
+#define AuCpdown_DIROPQ (1 << 3)
+#define au_ftest_cpdown(flags, name) ((flags) & AuCpdown_##name)
+#define au_fset_cpdown(flags, name) \
+ do { (flags) |= AuCpdown_##name; } while (0)
+#define au_fclr_cpdown(flags, name) \
+ do { (flags) &= ~AuCpdown_##name; } while (0)
+
+static int au_cpdown_dir_opq(struct dentry *dentry, aufs_bindex_t bdst,
+ unsigned int *flags)
+{
+ int err;
+ struct dentry *opq_dentry;
+
+ opq_dentry = au_diropq_create(dentry, bdst);
+ err = PTR_ERR(opq_dentry);
+ if (IS_ERR(opq_dentry))
+ goto out;
+ dput(opq_dentry);
+ au_fset_cpdown(*flags, DIROPQ);
+
+out:
+ return err;
+}
+
+static int au_cpdown_dir_wh(struct dentry *dentry, struct dentry *h_parent,
+ struct inode *dir, aufs_bindex_t bdst)
+{
+ int err;
+ struct path h_path;
+ struct au_branch *br;
+
+ br = au_sbr(dentry->d_sb, bdst);
+ h_path.dentry = au_wh_lkup(h_parent, &dentry->d_name, br);
+ err = PTR_ERR(h_path.dentry);
+ if (IS_ERR(h_path.dentry))
+ goto out;
+
+ err = 0;
+ if (d_is_positive(h_path.dentry)) {
+ h_path.mnt = au_br_mnt(br);
+ err = au_wh_unlink_dentry(au_h_iptr(dir, bdst), &h_path,
+ dentry);
+ }
+ dput(h_path.dentry);
+
+out:
+ return err;
+}
+
+static int au_cpdown_dir(struct dentry *dentry, aufs_bindex_t bdst,
+ struct au_pin *pin,
+ struct dentry *h_parent, void *arg)
+{
+ int err, rerr;
+ aufs_bindex_t bopq, btop;
+ struct path h_path;
+ struct dentry *parent;
+ struct inode *h_dir, *h_inode, *inode, *dir;
+ unsigned int *flags = arg;
+
+ btop = au_dbtop(dentry);
+ /* dentry is di-locked */
+ parent = dget_parent(dentry);
+ dir = d_inode(parent);
+ h_dir = d_inode(h_parent);
+ AuDebugOn(h_dir != au_h_iptr(dir, bdst));
+ IMustLock(h_dir);
+
+ err = au_lkup_neg(dentry, bdst, /*wh*/0);
+ if (unlikely(err < 0))
+ goto out;
+ h_path.dentry = au_h_dptr(dentry, bdst);
+ h_path.mnt = au_sbr_mnt(dentry->d_sb, bdst);
+ err = vfsub_sio_mkdir(au_h_iptr(dir, bdst), &h_path, 0755);
+ if (unlikely(err))
+ goto out_put;
+ au_fset_cpdown(*flags, MADE_DIR);
+
+ bopq = au_dbdiropq(dentry);
+ au_fclr_cpdown(*flags, WHED);
+ au_fclr_cpdown(*flags, DIROPQ);
+ if (au_dbwh(dentry) == bdst)
+ au_fset_cpdown(*flags, WHED);
+ if (!au_ftest_cpdown(*flags, PARENT_OPQ) && bopq <= bdst)
+ au_fset_cpdown(*flags, PARENT_OPQ);
+ h_inode = d_inode(h_path.dentry);
+ inode_lock_nested(h_inode, AuLsc_I_CHILD);
+ if (au_ftest_cpdown(*flags, WHED)) {
+ err = au_cpdown_dir_opq(dentry, bdst, flags);
+ if (unlikely(err)) {
+ inode_unlock(h_inode);
+ goto out_dir;
+ }
+ }
+
+ err = au_cpdown_attr(&h_path, au_h_dptr(dentry, btop));
+ inode_unlock(h_inode);
+ if (unlikely(err))
+ goto out_opq;
+
+ if (au_ftest_cpdown(*flags, WHED)) {
+ err = au_cpdown_dir_wh(dentry, h_parent, dir, bdst);
+ if (unlikely(err))
+ goto out_opq;
+ }
+
+ inode = d_inode(dentry);
+ if (au_ibbot(inode) < bdst)
+ au_set_ibbot(inode, bdst);
+ au_set_h_iptr(inode, bdst, au_igrab(h_inode),
+ au_hi_flags(inode, /*isdir*/1));
+ au_fhsm_wrote(dentry->d_sb, bdst, /*force*/0);
+ goto out; /* success */
+
+ /* revert */
+out_opq:
+ if (au_ftest_cpdown(*flags, DIROPQ)) {
+ inode_lock_nested(h_inode, AuLsc_I_CHILD);
+ rerr = au_diropq_remove(dentry, bdst);
+ inode_unlock(h_inode);
+ if (unlikely(rerr)) {
+ AuIOErr("failed removing diropq for %pd b%d (%d)\n",
+ dentry, bdst, rerr);
+ err = -EIO;
+ goto out;
+ }
+ }
+out_dir:
+ if (au_ftest_cpdown(*flags, MADE_DIR)) {
+ rerr = vfsub_sio_rmdir(au_h_iptr(dir, bdst), &h_path);
+ if (unlikely(rerr)) {
+ AuIOErr("failed removing %pd b%d (%d)\n",
+ dentry, bdst, rerr);
+ err = -EIO;
+ }
+ }
+out_put:
+ au_set_h_dptr(dentry, bdst, NULL);
+ if (au_dbbot(dentry) == bdst)
+ au_update_dbbot(dentry);
+out:
+ dput(parent);
+ return err;
+}
+
+int au_cpdown_dirs(struct dentry *dentry, aufs_bindex_t bdst)
+{
+ int err;
+ unsigned int flags;
+
+ flags = 0;
+ err = au_cp_dirs(dentry, bdst, au_cpdown_dir, &flags);
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* policies for create */
+
+int au_wbr_nonopq(struct dentry *dentry, aufs_bindex_t bindex)
+{
+ int err, i, j, ndentry;
+ aufs_bindex_t bopq;
+ struct au_dcsub_pages dpages;
+ struct au_dpage *dpage;
+ struct dentry **dentries, *parent, *d;
+
+ err = au_dpages_init(&dpages, GFP_NOFS);
+ if (unlikely(err))
+ goto out;
+ parent = dget_parent(dentry);
+ err = au_dcsub_pages_rev_aufs(&dpages, parent, /*do_include*/0);
+ if (unlikely(err))
+ goto out_free;
+
+ err = bindex;
+ for (i = 0; i < dpages.ndpage; i++) {
+ dpage = dpages.dpages + i;
+ dentries = dpage->dentries;
+ ndentry = dpage->ndentry;
+ for (j = 0; j < ndentry; j++) {
+ d = dentries[j];
+ di_read_lock_parent2(d, !AuLock_IR);
+ bopq = au_dbdiropq(d);
+ di_read_unlock(d, !AuLock_IR);
+ if (bopq >= 0 && bopq < err)
+ err = bopq;
+ }
+ }
+
+out_free:
+ dput(parent);
+ au_dpages_free(&dpages);
+out:
+ return err;
+}
+
+static int au_wbr_bu(struct super_block *sb, aufs_bindex_t bindex)
+{
+ for (; bindex >= 0; bindex--)
+ if (!au_br_rdonly(au_sbr(sb, bindex)))
+ return bindex;
+ return -EROFS;
+}
+
+/* top down parent */
+static int au_wbr_create_tdp(struct dentry *dentry,
+ unsigned int flags __maybe_unused)
+{
+ int err;
+ aufs_bindex_t btop, bindex;
+ struct super_block *sb;
+ struct dentry *parent, *h_parent;
+
+ sb = dentry->d_sb;
+ btop = au_dbtop(dentry);
+ err = btop;
+ if (!au_br_rdonly(au_sbr(sb, btop)))
+ goto out;
+
+ err = -EROFS;
+ parent = dget_parent(dentry);
+ for (bindex = au_dbtop(parent); bindex < btop; bindex++) {
+ h_parent = au_h_dptr(parent, bindex);
+ if (!h_parent || d_is_negative(h_parent))
+ continue;
+
+ if (!au_br_rdonly(au_sbr(sb, bindex))) {
+ err = bindex;
+ break;
+ }
+ }
+ dput(parent);
+
+ /* bottom up here */
+ if (unlikely(err < 0)) {
+ err = au_wbr_bu(sb, btop - 1);
+ if (err >= 0)
+ err = au_wbr_nonopq(dentry, err);
+ }
+
+out:
+ AuDbg("b%d\n", err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* an exception for the policy other than tdp */
+static int au_wbr_create_exp(struct dentry *dentry)
+{
+ int err;
+ aufs_bindex_t bwh, bdiropq;
+ struct dentry *parent;
+
+ err = -1;
+ bwh = au_dbwh(dentry);
+ parent = dget_parent(dentry);
+ bdiropq = au_dbdiropq(parent);
+ if (bwh >= 0) {
+ if (bdiropq >= 0)
+ err = min(bdiropq, bwh);
+ else
+ err = bwh;
+ AuDbg("%d\n", err);
+ } else if (bdiropq >= 0) {
+ err = bdiropq;
+ AuDbg("%d\n", err);
+ }
+ dput(parent);
+
+ if (err >= 0)
+ err = au_wbr_nonopq(dentry, err);
+
+ if (err >= 0 && au_br_rdonly(au_sbr(dentry->d_sb, err)))
+ err = -1;
+
+ AuDbg("%d\n", err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* round robin */
+static int au_wbr_create_init_rr(struct super_block *sb)
+{
+ int err;
+
+ err = au_wbr_bu(sb, au_sbbot(sb));
+ atomic_set(&au_sbi(sb)->si_wbr_rr_next, -err); /* less important */
+ /* smp_mb(); */
+
+ AuDbg("b%d\n", err);
+ return err;
+}
+
+static int au_wbr_create_rr(struct dentry *dentry, unsigned int flags)
+{
+ int err, nbr;
+ unsigned int u;
+ aufs_bindex_t bindex, bbot;
+ struct super_block *sb;
+ atomic_t *next;
+
+ err = au_wbr_create_exp(dentry);
+ if (err >= 0)
+ goto out;
+
+ sb = dentry->d_sb;
+ next = &au_sbi(sb)->si_wbr_rr_next;
+ bbot = au_sbbot(sb);
+ nbr = bbot + 1;
+ for (bindex = 0; bindex <= bbot; bindex++) {
+ if (!au_ftest_wbr(flags, DIR)) {
+ err = atomic_dec_return(next) + 1;
+ /* modulo for 0 is meaningless */
+ if (unlikely(!err))
+ err = atomic_dec_return(next) + 1;
+ } else
+ err = atomic_read(next);
+ AuDbg("%d\n", err);
+ u = err;
+ err = u % nbr;
+ AuDbg("%d\n", err);
+ if (!au_br_rdonly(au_sbr(sb, err)))
+ break;
+ err = -EROFS;
+ }
+
+ if (err >= 0)
+ err = au_wbr_nonopq(dentry, err);
+
+out:
+ AuDbg("%d\n", err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* most free space */
+static void au_mfs(struct dentry *dentry, struct dentry *parent)
+{
+ struct super_block *sb;
+ struct au_branch *br;
+ struct au_wbr_mfs *mfs;
+ struct dentry *h_parent;
+ aufs_bindex_t bindex, bbot;
+ int err;
+ unsigned long long b, bavail;
+ struct path h_path;
+ /* reduce the stack usage */
+ struct kstatfs *st;
+
+ st = kmalloc(sizeof(*st), GFP_NOFS);
+ if (unlikely(!st)) {
+ AuWarn1("failed updating mfs(%d), ignored\n", -ENOMEM);
+ return;
+ }
+
+ bavail = 0;
+ sb = dentry->d_sb;
+ mfs = &au_sbi(sb)->si_wbr_mfs;
+ MtxMustLock(&mfs->mfs_lock);
+ mfs->mfs_bindex = -EROFS;
+ mfs->mfsrr_bytes = 0;
+ if (!parent) {
+ bindex = 0;
+ bbot = au_sbbot(sb);
+ } else {
+ bindex = au_dbtop(parent);
+ bbot = au_dbtaildir(parent);
+ }
+
+ for (; bindex <= bbot; bindex++) {
+ if (parent) {
+ h_parent = au_h_dptr(parent, bindex);
+ if (!h_parent || d_is_negative(h_parent))
+ continue;
+ }
+ br = au_sbr(sb, bindex);
+ if (au_br_rdonly(br))
+ continue;
+
+ /* sb->s_root for NFS is unreliable */
+ h_path.mnt = au_br_mnt(br);
+ h_path.dentry = h_path.mnt->mnt_root;
+ err = vfs_statfs(&h_path, st);
+ if (unlikely(err)) {
+ AuWarn1("failed statfs, b%d, %d\n", bindex, err);
+ continue;
+ }
+
+ /* when the available size is equal, select the lower one */
+ BUILD_BUG_ON(sizeof(b) < sizeof(st->f_bavail)
+ || sizeof(b) < sizeof(st->f_bsize));
+ b = st->f_bavail * st->f_bsize;
+ br->br_wbr->wbr_bytes = b;
+ if (b >= bavail) {
+ bavail = b;
+ mfs->mfs_bindex = bindex;
+ mfs->mfs_jiffy = jiffies;
+ }
+ }
+
+ mfs->mfsrr_bytes = bavail;
+ AuDbg("b%d\n", mfs->mfs_bindex);
+ au_kfree_rcu(st);
+}
+
+static int au_wbr_create_mfs(struct dentry *dentry, unsigned int flags)
+{
+ int err;
+ struct dentry *parent;
+ struct super_block *sb;
+ struct au_wbr_mfs *mfs;
+
+ err = au_wbr_create_exp(dentry);
+ if (err >= 0)
+ goto out;
+
+ sb = dentry->d_sb;
+ parent = NULL;
+ if (au_ftest_wbr(flags, PARENT))
+ parent = dget_parent(dentry);
+ mfs = &au_sbi(sb)->si_wbr_mfs;
+ mutex_lock(&mfs->mfs_lock);
+ if (time_after(jiffies, mfs->mfs_jiffy + mfs->mfs_expire)
+ || mfs->mfs_bindex < 0
+ || au_br_rdonly(au_sbr(sb, mfs->mfs_bindex)))
+ au_mfs(dentry, parent);
+ mutex_unlock(&mfs->mfs_lock);
+ err = mfs->mfs_bindex;
+ dput(parent);
+
+ if (err >= 0)
+ err = au_wbr_nonopq(dentry, err);
+
+out:
+ AuDbg("b%d\n", err);
+ return err;
+}
+
+static int au_wbr_create_init_mfs(struct super_block *sb)
+{
+ struct au_wbr_mfs *mfs;
+
+ mfs = &au_sbi(sb)->si_wbr_mfs;
+ mutex_init(&mfs->mfs_lock);
+ mfs->mfs_jiffy = 0;
+ mfs->mfs_bindex = -EROFS;
+
+ return 0;
+}
+
+static int au_wbr_create_fin_mfs(struct super_block *sb __maybe_unused)
+{
+ mutex_destroy(&au_sbi(sb)->si_wbr_mfs.mfs_lock);
+ return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* top down regardless parent, and then mfs */
+static int au_wbr_create_tdmfs(struct dentry *dentry,
+ unsigned int flags __maybe_unused)
+{
+ int err;
+ aufs_bindex_t bwh, btail, bindex, bfound, bmfs;
+ unsigned long long watermark;
+ struct super_block *sb;
+ struct au_wbr_mfs *mfs;
+ struct au_branch *br;
+ struct dentry *parent;
+
+ sb = dentry->d_sb;
+ mfs = &au_sbi(sb)->si_wbr_mfs;
+ mutex_lock(&mfs->mfs_lock);
+ if (time_after(jiffies, mfs->mfs_jiffy + mfs->mfs_expire)
+ || mfs->mfs_bindex < 0)
+ au_mfs(dentry, /*parent*/NULL);
+ watermark = mfs->mfsrr_watermark;
+ bmfs = mfs->mfs_bindex;
+ mutex_unlock(&mfs->mfs_lock);
+
+ /* another style of au_wbr_create_exp() */
+ bwh = au_dbwh(dentry);
+ parent = dget_parent(dentry);
+ btail = au_dbtaildir(parent);
+ if (bwh >= 0 && bwh < btail)
+ btail = bwh;
+
+ err = au_wbr_nonopq(dentry, btail);
+ if (unlikely(err < 0))
+ goto out;
+ btail = err;
+ bfound = -1;
+ for (bindex = 0; bindex <= btail; bindex++) {
+ br = au_sbr(sb, bindex);
+ if (au_br_rdonly(br))
+ continue;
+ if (br->br_wbr->wbr_bytes > watermark) {
+ bfound = bindex;
+ break;
+ }
+ }
+ err = bfound;
+ if (err < 0)
+ err = bmfs;
+
+out:
+ dput(parent);
+ AuDbg("b%d\n", err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* most free space and then round robin */
+static int au_wbr_create_mfsrr(struct dentry *dentry, unsigned int flags)
+{
+ int err;
+ struct au_wbr_mfs *mfs;
+
+ err = au_wbr_create_mfs(dentry, flags);
+ if (err >= 0) {
+ mfs = &au_sbi(dentry->d_sb)->si_wbr_mfs;
+ mutex_lock(&mfs->mfs_lock);
+ if (mfs->mfsrr_bytes < mfs->mfsrr_watermark)
+ err = au_wbr_create_rr(dentry, flags);
+ mutex_unlock(&mfs->mfs_lock);
+ }
+
+ AuDbg("b%d\n", err);
+ return err;
+}
+
+static int au_wbr_create_init_mfsrr(struct super_block *sb)
+{
+ int err;
+
+ au_wbr_create_init_mfs(sb); /* ignore */
+ err = au_wbr_create_init_rr(sb);
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* top down parent and most free space */
+static int au_wbr_create_pmfs(struct dentry *dentry, unsigned int flags)
+{
+ int err, e2;
+ unsigned long long b;
+ aufs_bindex_t bindex, btop, bbot;
+ struct super_block *sb;
+ struct dentry *parent, *h_parent;
+ struct au_branch *br;
+
+ err = au_wbr_create_tdp(dentry, flags);
+ if (unlikely(err < 0))
+ goto out;
+ parent = dget_parent(dentry);
+ btop = au_dbtop(parent);
+ bbot = au_dbtaildir(parent);
+ if (btop == bbot)
+ goto out_parent; /* success */
+
+ e2 = au_wbr_create_mfs(dentry, flags);
+ if (e2 < 0)
+ goto out_parent; /* success */
+
+ /* when the available size is equal, select upper one */
+ sb = dentry->d_sb;
+ br = au_sbr(sb, err);
+ b = br->br_wbr->wbr_bytes;
+ AuDbg("b%d, %llu\n", err, b);
+
+ for (bindex = btop; bindex <= bbot; bindex++) {
+ h_parent = au_h_dptr(parent, bindex);
+ if (!h_parent || d_is_negative(h_parent))
+ continue;
+
+ br = au_sbr(sb, bindex);
+ if (!au_br_rdonly(br) && br->br_wbr->wbr_bytes > b) {
+ b = br->br_wbr->wbr_bytes;
+ err = bindex;
+ AuDbg("b%d, %llu\n", err, b);
+ }
+ }
+
+ if (err >= 0)
+ err = au_wbr_nonopq(dentry, err);
+
+out_parent:
+ dput(parent);
+out:
+ AuDbg("b%d\n", err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * - top down parent
+ * - most free space with parent
+ * - most free space round-robin regardless parent
+ */
+static int au_wbr_create_pmfsrr(struct dentry *dentry, unsigned int flags)
+{
+ int err;
+ unsigned long long watermark;
+ struct super_block *sb;
+ struct au_branch *br;
+ struct au_wbr_mfs *mfs;
+
+ err = au_wbr_create_pmfs(dentry, flags | AuWbr_PARENT);
+ if (unlikely(err < 0))
+ goto out;
+
+ sb = dentry->d_sb;
+ br = au_sbr(sb, err);
+ mfs = &au_sbi(sb)->si_wbr_mfs;
+ mutex_lock(&mfs->mfs_lock);
+ watermark = mfs->mfsrr_watermark;
+ mutex_unlock(&mfs->mfs_lock);
+ if (br->br_wbr->wbr_bytes < watermark)
+ /* regardless the parent dir */
+ err = au_wbr_create_mfsrr(dentry, flags);
+
+out:
+ AuDbg("b%d\n", err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* policies for copyup */
+
+/* top down parent */
+static int au_wbr_copyup_tdp(struct dentry *dentry)
+{
+ return au_wbr_create_tdp(dentry, /*flags, anything is ok*/0);
+}
+
+/* bottom up parent */
+static int au_wbr_copyup_bup(struct dentry *dentry)
+{
+ int err;
+ aufs_bindex_t bindex, btop;
+ struct dentry *parent, *h_parent;
+ struct super_block *sb;
+
+ err = -EROFS;
+ sb = dentry->d_sb;
+ parent = dget_parent(dentry);
+ btop = au_dbtop(parent);
+ for (bindex = au_dbtop(dentry); bindex >= btop; bindex--) {
+ h_parent = au_h_dptr(parent, bindex);
+ if (!h_parent || d_is_negative(h_parent))
+ continue;
+
+ if (!au_br_rdonly(au_sbr(sb, bindex))) {
+ err = bindex;
+ break;
+ }
+ }
+ dput(parent);
+
+ /* bottom up here */
+ if (unlikely(err < 0))
+ err = au_wbr_bu(sb, btop - 1);
+
+ AuDbg("b%d\n", err);
+ return err;
+}
+
+/* bottom up */
+int au_wbr_do_copyup_bu(struct dentry *dentry, aufs_bindex_t btop)
+{
+ int err;
+
+ err = au_wbr_bu(dentry->d_sb, btop);
+ AuDbg("b%d\n", err);
+ if (err > btop)
+ err = au_wbr_nonopq(dentry, err);
+
+ AuDbg("b%d\n", err);
+ return err;
+}
+
+static int au_wbr_copyup_bu(struct dentry *dentry)
+{
+ int err;
+ aufs_bindex_t btop;
+
+ btop = au_dbtop(dentry);
+ err = au_wbr_do_copyup_bu(dentry, btop);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct au_wbr_copyup_operations au_wbr_copyup_ops[] = {
+ [AuWbrCopyup_TDP] = {
+ .copyup = au_wbr_copyup_tdp
+ },
+ [AuWbrCopyup_BUP] = {
+ .copyup = au_wbr_copyup_bup
+ },
+ [AuWbrCopyup_BU] = {
+ .copyup = au_wbr_copyup_bu
+ }
+};
+
+struct au_wbr_create_operations au_wbr_create_ops[] = {
+ [AuWbrCreate_TDP] = {
+ .create = au_wbr_create_tdp
+ },
+ [AuWbrCreate_RR] = {
+ .create = au_wbr_create_rr,
+ .init = au_wbr_create_init_rr
+ },
+ [AuWbrCreate_MFS] = {
+ .create = au_wbr_create_mfs,
+ .init = au_wbr_create_init_mfs,
+ .fin = au_wbr_create_fin_mfs
+ },
+ [AuWbrCreate_MFSV] = {
+ .create = au_wbr_create_mfs,
+ .init = au_wbr_create_init_mfs,
+ .fin = au_wbr_create_fin_mfs
+ },
+ [AuWbrCreate_MFSRR] = {
+ .create = au_wbr_create_mfsrr,
+ .init = au_wbr_create_init_mfsrr,
+ .fin = au_wbr_create_fin_mfs
+ },
+ [AuWbrCreate_MFSRRV] = {
+ .create = au_wbr_create_mfsrr,
+ .init = au_wbr_create_init_mfsrr,
+ .fin = au_wbr_create_fin_mfs
+ },
+ [AuWbrCreate_TDMFS] = {
+ .create = au_wbr_create_tdmfs,
+ .init = au_wbr_create_init_mfs,
+ .fin = au_wbr_create_fin_mfs
+ },
+ [AuWbrCreate_TDMFSV] = {
+ .create = au_wbr_create_tdmfs,
+ .init = au_wbr_create_init_mfs,
+ .fin = au_wbr_create_fin_mfs
+ },
+ [AuWbrCreate_PMFS] = {
+ .create = au_wbr_create_pmfs,
+ .init = au_wbr_create_init_mfs,
+ .fin = au_wbr_create_fin_mfs
+ },
+ [AuWbrCreate_PMFSV] = {
+ .create = au_wbr_create_pmfs,
+ .init = au_wbr_create_init_mfs,
+ .fin = au_wbr_create_fin_mfs
+ },
+ [AuWbrCreate_PMFSRR] = {
+ .create = au_wbr_create_pmfsrr,
+ .init = au_wbr_create_init_mfsrr,
+ .fin = au_wbr_create_fin_mfs
+ },
+ [AuWbrCreate_PMFSRRV] = {
+ .create = au_wbr_create_pmfsrr,
+ .init = au_wbr_create_init_mfsrr,
+ .fin = au_wbr_create_fin_mfs
+ }
+};
diff --git a/fs/aufs/whout.c b/fs/aufs/whout.c
new file mode 100644
index 0000000000..6c9c850156
--- /dev/null
+++ b/fs/aufs/whout.c
@@ -0,0 +1,1062 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * whiteout for logical deletion and opaque directory
+ */
+
+#include "aufs.h"
+
+#define WH_MASK 0444
+
+/*
+ * If a directory contains this file, then it is opaque. We start with the
+ * .wh. flag so that it is blocked by lookup.
+ */
+static struct qstr diropq_name = QSTR_INIT(AUFS_WH_DIROPQ,
+ sizeof(AUFS_WH_DIROPQ) - 1);
+
+/*
+ * generate whiteout name, which is NOT terminated by NULL.
+ * @name: original d_name.name
+ * @len: original d_name.len
+ * @wh: whiteout qstr
+ * returns zero when succeeds, otherwise error.
+ * succeeded value as wh->name should be freed by kfree().
+ */
+int au_wh_name_alloc(struct qstr *wh, const struct qstr *name)
+{
+ char *p;
+
+ if (unlikely(name->len > PATH_MAX - AUFS_WH_PFX_LEN))
+ return -ENAMETOOLONG;
+
+ wh->len = name->len + AUFS_WH_PFX_LEN;
+ p = kmalloc(wh->len, GFP_NOFS);
+ wh->name = p;
+ if (p) {
+ memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN);
+ memcpy(p + AUFS_WH_PFX_LEN, name->name, name->len);
+ /* smp_mb(); */
+ return 0;
+ }
+ return -ENOMEM;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * test if the @wh_name exists under @h_parent.
+ * @try_sio specifies the necessary of super-io.
+ */
+int au_wh_test(struct dentry *h_parent, struct qstr *wh_name, int try_sio)
+{
+ int err;
+ struct dentry *wh_dentry;
+
+ if (!try_sio)
+ wh_dentry = vfsub_lkup_one(wh_name, h_parent);
+ else
+ wh_dentry = au_sio_lkup_one(wh_name, h_parent);
+ err = PTR_ERR(wh_dentry);
+ if (IS_ERR(wh_dentry)) {
+ if (err == -ENAMETOOLONG)
+ err = 0;
+ goto out;
+ }
+
+ err = 0;
+ if (d_is_negative(wh_dentry))
+ goto out_wh; /* success */
+
+ err = 1;
+ if (d_is_reg(wh_dentry))
+ goto out_wh; /* success */
+
+ err = -EIO;
+ AuIOErr("%pd Invalid whiteout entry type 0%o.\n",
+ wh_dentry, d_inode(wh_dentry)->i_mode);
+
+out_wh:
+ dput(wh_dentry);
+out:
+ return err;
+}
+
+/*
+ * test if the @h_dentry sets opaque or not.
+ */
+int au_diropq_test(struct dentry *h_dentry)
+{
+ int err;
+ struct inode *h_dir;
+
+ h_dir = d_inode(h_dentry);
+ err = au_wh_test(h_dentry, &diropq_name,
+ au_test_h_perm_sio(h_dir, MAY_EXEC));
+ return err;
+}
+
+/*
+ * returns a negative dentry whose name is unique and temporary.
+ */
+struct dentry *au_whtmp_lkup(struct dentry *h_parent, struct au_branch *br,
+ struct qstr *prefix)
+{
+ struct dentry *dentry;
+ int i;
+ char defname[NAME_MAX - AUFS_MAX_NAMELEN + DNAME_INLINE_LEN + 1],
+ *name, *p;
+ /* strict atomic_t is unnecessary here */
+ static unsigned short cnt;
+ struct qstr qs;
+
+ BUILD_BUG_ON(sizeof(cnt) * 2 > AUFS_WH_TMP_LEN);
+
+ name = defname;
+ qs.len = sizeof(defname) - DNAME_INLINE_LEN + prefix->len - 1;
+ if (unlikely(prefix->len > DNAME_INLINE_LEN)) {
+ dentry = ERR_PTR(-ENAMETOOLONG);
+ if (unlikely(qs.len > NAME_MAX))
+ goto out;
+ dentry = ERR_PTR(-ENOMEM);
+ name = kmalloc(qs.len + 1, GFP_NOFS);
+ if (unlikely(!name))
+ goto out;
+ }
+
+ /* doubly whiteout-ed */
+ memcpy(name, AUFS_WH_PFX AUFS_WH_PFX, AUFS_WH_PFX_LEN * 2);
+ p = name + AUFS_WH_PFX_LEN * 2;
+ memcpy(p, prefix->name, prefix->len);
+ p += prefix->len;
+ *p++ = '.';
+ AuDebugOn(name + qs.len + 1 - p <= AUFS_WH_TMP_LEN);
+
+ qs.name = name;
+ for (i = 0; i < 3; i++) {
+ sprintf(p, "%.*x", AUFS_WH_TMP_LEN, cnt++);
+ dentry = au_sio_lkup_one(&qs, h_parent);
+ if (IS_ERR(dentry) || d_is_negative(dentry))
+ goto out_name;
+ dput(dentry);
+ }
+ /* pr_warn("could not get random name\n"); */
+ dentry = ERR_PTR(-EEXIST);
+ AuDbg("%.*s\n", AuLNPair(&qs));
+ BUG();
+
+out_name:
+ if (name != defname)
+ au_kfree_try_rcu(name);
+out:
+ AuTraceErrPtr(dentry);
+ return dentry;
+}
+
+/*
+ * rename the @h_dentry on @br to the whiteouted temporary name.
+ */
+int au_whtmp_ren(struct dentry *h_dentry, struct au_branch *br)
+{
+ int err;
+ struct path h_path = {
+ .mnt = au_br_mnt(br)
+ };
+ struct inode *h_dir, *delegated;
+ struct dentry *h_parent;
+
+ h_parent = h_dentry->d_parent; /* dir inode is locked */
+ h_dir = d_inode(h_parent);
+ IMustLock(h_dir);
+
+ h_path.dentry = au_whtmp_lkup(h_parent, br, &h_dentry->d_name);
+ err = PTR_ERR(h_path.dentry);
+ if (IS_ERR(h_path.dentry))
+ goto out;
+
+ /* under the same dir, no need to lock_rename() */
+ delegated = NULL;
+ err = vfsub_rename(h_dir, h_dentry, h_dir, &h_path, &delegated,
+ /*flags*/0);
+ AuTraceErr(err);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal rename\n");
+ iput(delegated);
+ }
+ dput(h_path.dentry);
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+/*
+ * functions for removing a whiteout
+ */
+
+static int do_unlink_wh(struct inode *h_dir, struct path *h_path)
+{
+ int err, force;
+ struct inode *delegated;
+
+ /*
+ * forces superio when the dir has a sticky bit.
+ * this may be a violation of unix fs semantics.
+ */
+ force = (h_dir->i_mode & S_ISVTX)
+ && !uid_eq(current_fsuid(), d_inode(h_path->dentry)->i_uid);
+ delegated = NULL;
+ err = vfsub_unlink(h_dir, h_path, &delegated, force);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal unlink\n");
+ iput(delegated);
+ }
+ return err;
+}
+
+int au_wh_unlink_dentry(struct inode *h_dir, struct path *h_path,
+ struct dentry *dentry)
+{
+ int err;
+
+ err = do_unlink_wh(h_dir, h_path);
+ if (!err && dentry)
+ au_set_dbwh(dentry, -1);
+
+ return err;
+}
+
+static int unlink_wh_name(struct dentry *h_parent, struct qstr *wh,
+ struct au_branch *br)
+{
+ int err;
+ struct path h_path = {
+ .mnt = au_br_mnt(br)
+ };
+
+ err = 0;
+ h_path.dentry = vfsub_lkup_one(wh, h_parent);
+ if (IS_ERR(h_path.dentry))
+ err = PTR_ERR(h_path.dentry);
+ else {
+ if (d_is_reg(h_path.dentry))
+ err = do_unlink_wh(d_inode(h_parent), &h_path);
+ dput(h_path.dentry);
+ }
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+/*
+ * initialize/clean whiteout for a branch
+ */
+
+static void au_wh_clean(struct inode *h_dir, struct path *whpath,
+ const int isdir)
+{
+ int err;
+ struct inode *delegated;
+
+ if (d_is_negative(whpath->dentry))
+ return;
+
+ if (isdir)
+ err = vfsub_rmdir(h_dir, whpath);
+ else {
+ delegated = NULL;
+ err = vfsub_unlink(h_dir, whpath, &delegated, /*force*/0);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal unlink\n");
+ iput(delegated);
+ }
+ }
+ if (unlikely(err))
+ pr_warn("failed removing %pd (%d), ignored.\n",
+ whpath->dentry, err);
+}
+
+static int test_linkable(struct dentry *h_root)
+{
+ struct inode *h_dir = d_inode(h_root);
+
+ if (h_dir->i_op->link)
+ return 0;
+
+ pr_err("%pd (%s) doesn't support link(2), use noplink and rw+nolwh\n",
+ h_root, au_sbtype(h_root->d_sb));
+ return -ENOSYS;
+}
+
+/* todo: should this mkdir be done in /sbin/mount.aufs helper? */
+static int au_whdir(struct inode *h_dir, struct path *path)
+{
+ int err;
+
+ err = -EEXIST;
+ if (d_is_negative(path->dentry)) {
+ int mode = 0700;
+
+ if (au_test_nfs(path->dentry->d_sb))
+ mode |= 0111;
+ err = vfsub_mkdir(h_dir, path, mode);
+ } else if (d_is_dir(path->dentry))
+ err = 0;
+ else
+ pr_err("unknown %pd exists\n", path->dentry);
+
+ return err;
+}
+
+struct au_wh_base {
+ const struct qstr *name;
+ struct dentry *dentry;
+};
+
+static void au_wh_init_ro(struct inode *h_dir, struct au_wh_base base[],
+ struct path *h_path)
+{
+ h_path->dentry = base[AuBrWh_BASE].dentry;
+ au_wh_clean(h_dir, h_path, /*isdir*/0);
+ h_path->dentry = base[AuBrWh_PLINK].dentry;
+ au_wh_clean(h_dir, h_path, /*isdir*/1);
+ h_path->dentry = base[AuBrWh_ORPH].dentry;
+ au_wh_clean(h_dir, h_path, /*isdir*/1);
+}
+
+/*
+ * returns tri-state,
+ * minus: error, caller should print the message
+ * zero: success
+ * plus: error, caller should NOT print the message
+ */
+static int au_wh_init_rw_nolink(struct dentry *h_root, struct au_wbr *wbr,
+ int do_plink, struct au_wh_base base[],
+ struct path *h_path)
+{
+ int err;
+ struct inode *h_dir;
+
+ h_dir = d_inode(h_root);
+ h_path->dentry = base[AuBrWh_BASE].dentry;
+ au_wh_clean(h_dir, h_path, /*isdir*/0);
+ h_path->dentry = base[AuBrWh_PLINK].dentry;
+ if (do_plink) {
+ err = test_linkable(h_root);
+ if (unlikely(err)) {
+ err = 1;
+ goto out;
+ }
+
+ err = au_whdir(h_dir, h_path);
+ if (unlikely(err))
+ goto out;
+ wbr->wbr_plink = dget(base[AuBrWh_PLINK].dentry);
+ } else
+ au_wh_clean(h_dir, h_path, /*isdir*/1);
+ h_path->dentry = base[AuBrWh_ORPH].dentry;
+ err = au_whdir(h_dir, h_path);
+ if (unlikely(err))
+ goto out;
+ wbr->wbr_orph = dget(base[AuBrWh_ORPH].dentry);
+
+out:
+ return err;
+}
+
+/*
+ * for the moment, aufs supports the branch filesystem which does not support
+ * link(2). testing on FAT which does not support i_op->setattr() fully either,
+ * copyup failed. finally, such filesystem will not be used as the writable
+ * branch.
+ *
+ * returns tri-state, see above.
+ */
+static int au_wh_init_rw(struct dentry *h_root, struct au_wbr *wbr,
+ int do_plink, struct au_wh_base base[],
+ struct path *h_path)
+{
+ int err;
+ struct inode *h_dir;
+
+ WbrWhMustWriteLock(wbr);
+
+ err = test_linkable(h_root);
+ if (unlikely(err)) {
+ err = 1;
+ goto out;
+ }
+
+ /*
+ * todo: should this create be done in /sbin/mount.aufs helper?
+ */
+ err = -EEXIST;
+ h_dir = d_inode(h_root);
+ if (d_is_negative(base[AuBrWh_BASE].dentry)) {
+ h_path->dentry = base[AuBrWh_BASE].dentry;
+ err = vfsub_create(h_dir, h_path, WH_MASK, /*want_excl*/true);
+ } else if (d_is_reg(base[AuBrWh_BASE].dentry))
+ err = 0;
+ else
+ pr_err("unknown %pd2 exists\n", base[AuBrWh_BASE].dentry);
+ if (unlikely(err))
+ goto out;
+
+ h_path->dentry = base[AuBrWh_PLINK].dentry;
+ if (do_plink) {
+ err = au_whdir(h_dir, h_path);
+ if (unlikely(err))
+ goto out;
+ wbr->wbr_plink = dget(base[AuBrWh_PLINK].dentry);
+ } else
+ au_wh_clean(h_dir, h_path, /*isdir*/1);
+ wbr->wbr_whbase = dget(base[AuBrWh_BASE].dentry);
+
+ h_path->dentry = base[AuBrWh_ORPH].dentry;
+ err = au_whdir(h_dir, h_path);
+ if (unlikely(err))
+ goto out;
+ wbr->wbr_orph = dget(base[AuBrWh_ORPH].dentry);
+
+out:
+ return err;
+}
+
+/*
+ * initialize the whiteout base file/dir for @br.
+ */
+int au_wh_init(struct au_branch *br, struct super_block *sb)
+{
+ int err, i;
+ const unsigned char do_plink
+ = !!au_opt_test(au_mntflags(sb), PLINK);
+ struct inode *h_dir;
+ struct path path = br->br_path;
+ struct dentry *h_root = path.dentry;
+ struct au_wbr *wbr = br->br_wbr;
+ static const struct qstr base_name[] = {
+ [AuBrWh_BASE] = QSTR_INIT(AUFS_BASE_NAME,
+ sizeof(AUFS_BASE_NAME) - 1),
+ [AuBrWh_PLINK] = QSTR_INIT(AUFS_PLINKDIR_NAME,
+ sizeof(AUFS_PLINKDIR_NAME) - 1),
+ [AuBrWh_ORPH] = QSTR_INIT(AUFS_ORPHDIR_NAME,
+ sizeof(AUFS_ORPHDIR_NAME) - 1)
+ };
+ struct au_wh_base base[] = {
+ [AuBrWh_BASE] = {
+ .name = base_name + AuBrWh_BASE,
+ .dentry = NULL
+ },
+ [AuBrWh_PLINK] = {
+ .name = base_name + AuBrWh_PLINK,
+ .dentry = NULL
+ },
+ [AuBrWh_ORPH] = {
+ .name = base_name + AuBrWh_ORPH,
+ .dentry = NULL
+ }
+ };
+
+ if (wbr)
+ WbrWhMustWriteLock(wbr);
+
+ for (i = 0; i < AuBrWh_Last; i++) {
+ /* doubly whiteouted */
+ struct dentry *d;
+
+ d = au_wh_lkup(h_root, (void *)base[i].name, br);
+ err = PTR_ERR(d);
+ if (IS_ERR(d))
+ goto out;
+
+ base[i].dentry = d;
+ AuDebugOn(wbr
+ && wbr->wbr_wh[i]
+ && wbr->wbr_wh[i] != base[i].dentry);
+ }
+
+ if (wbr)
+ for (i = 0; i < AuBrWh_Last; i++) {
+ dput(wbr->wbr_wh[i]);
+ wbr->wbr_wh[i] = NULL;
+ }
+
+ err = 0;
+ if (!au_br_writable(br->br_perm)) {
+ h_dir = d_inode(h_root);
+ au_wh_init_ro(h_dir, base, &path);
+ } else if (!au_br_wh_linkable(br->br_perm)) {
+ err = au_wh_init_rw_nolink(h_root, wbr, do_plink, base, &path);
+ if (err > 0)
+ goto out;
+ else if (err)
+ goto out_err;
+ } else {
+ err = au_wh_init_rw(h_root, wbr, do_plink, base, &path);
+ if (err > 0)
+ goto out;
+ else if (err)
+ goto out_err;
+ }
+ goto out; /* success */
+
+out_err:
+ pr_err("an error(%d) on the writable branch %pd(%s)\n",
+ err, h_root, au_sbtype(h_root->d_sb));
+out:
+ for (i = 0; i < AuBrWh_Last; i++)
+ dput(base[i].dentry);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+/*
+ * whiteouts are all hard-linked usually.
+ * when its link count reaches a ceiling, we create a new whiteout base
+ * asynchronously.
+ */
+
+struct reinit_br_wh {
+ struct super_block *sb;
+ struct au_branch *br;
+};
+
+static void reinit_br_wh(void *arg)
+{
+ int err;
+ aufs_bindex_t bindex;
+ struct path h_path;
+ struct reinit_br_wh *a = arg;
+ struct au_wbr *wbr;
+ struct inode *dir, *delegated;
+ struct dentry *h_root;
+ struct au_hinode *hdir;
+
+ err = 0;
+ wbr = a->br->br_wbr;
+ /* big aufs lock */
+ si_noflush_write_lock(a->sb);
+ if (!au_br_writable(a->br->br_perm))
+ goto out;
+ bindex = au_br_index(a->sb, a->br->br_id);
+ if (unlikely(bindex < 0))
+ goto out;
+
+ di_read_lock_parent(a->sb->s_root, AuLock_IR);
+ dir = d_inode(a->sb->s_root);
+ hdir = au_hi(dir, bindex);
+ h_root = au_h_dptr(a->sb->s_root, bindex);
+ AuDebugOn(h_root != au_br_dentry(a->br));
+
+ au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
+ wbr_wh_write_lock(wbr);
+ err = au_h_verify(wbr->wbr_whbase, au_opt_udba(a->sb), hdir->hi_inode,
+ h_root, a->br);
+ if (!err) {
+ h_path.dentry = wbr->wbr_whbase;
+ h_path.mnt = au_br_mnt(a->br);
+ delegated = NULL;
+ err = vfsub_unlink(hdir->hi_inode, &h_path, &delegated,
+ /*force*/0);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal unlink\n");
+ iput(delegated);
+ }
+ } else {
+ pr_warn("%pd is moved, ignored\n", wbr->wbr_whbase);
+ err = 0;
+ }
+ dput(wbr->wbr_whbase);
+ wbr->wbr_whbase = NULL;
+ if (!err)
+ err = au_wh_init(a->br, a->sb);
+ wbr_wh_write_unlock(wbr);
+ au_hn_inode_unlock(hdir);
+ di_read_unlock(a->sb->s_root, AuLock_IR);
+ if (!err)
+ au_fhsm_wrote(a->sb, bindex, /*force*/0);
+
+out:
+ if (wbr)
+ atomic_dec(&wbr->wbr_wh_running);
+ au_lcnt_dec(&a->br->br_count);
+ si_write_unlock(a->sb);
+ au_nwt_done(&au_sbi(a->sb)->si_nowait);
+ au_kfree_rcu(a);
+ if (unlikely(err))
+ AuIOErr("err %d\n", err);
+}
+
+static void kick_reinit_br_wh(struct super_block *sb, struct au_branch *br)
+{
+ int do_dec, wkq_err;
+ struct reinit_br_wh *arg;
+
+ do_dec = 1;
+ if (atomic_inc_return(&br->br_wbr->wbr_wh_running) != 1)
+ goto out;
+
+ /* ignore ENOMEM */
+ arg = kmalloc(sizeof(*arg), GFP_NOFS);
+ if (arg) {
+ /*
+ * dec(wh_running), kfree(arg) and dec(br_count)
+ * in reinit function
+ */
+ arg->sb = sb;
+ arg->br = br;
+ au_lcnt_inc(&br->br_count);
+ wkq_err = au_wkq_nowait(reinit_br_wh, arg, sb, /*flags*/0);
+ if (unlikely(wkq_err)) {
+ atomic_dec(&br->br_wbr->wbr_wh_running);
+ au_lcnt_dec(&br->br_count);
+ au_kfree_rcu(arg);
+ }
+ do_dec = 0;
+ }
+
+out:
+ if (do_dec)
+ atomic_dec(&br->br_wbr->wbr_wh_running);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * create the whiteout @wh.
+ */
+static int link_or_create_wh(struct super_block *sb, aufs_bindex_t bindex,
+ struct dentry *wh)
+{
+ int err;
+ struct path h_path = {
+ .dentry = wh
+ };
+ struct au_branch *br;
+ struct au_wbr *wbr;
+ struct dentry *h_parent;
+ struct inode *h_dir, *delegated;
+
+ h_parent = wh->d_parent; /* dir inode is locked */
+ h_dir = d_inode(h_parent);
+ IMustLock(h_dir);
+
+ br = au_sbr(sb, bindex);
+ h_path.mnt = au_br_mnt(br);
+ wbr = br->br_wbr;
+ wbr_wh_read_lock(wbr);
+ if (wbr->wbr_whbase) {
+ delegated = NULL;
+ err = vfsub_link(wbr->wbr_whbase, h_dir, &h_path, &delegated);
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal link\n");
+ iput(delegated);
+ }
+ if (!err || err != -EMLINK)
+ goto out;
+
+ /* link count full. re-initialize br_whbase. */
+ kick_reinit_br_wh(sb, br);
+ }
+
+ /* return this error in this context */
+ err = vfsub_create(h_dir, &h_path, WH_MASK, /*want_excl*/true);
+ if (!err)
+ au_fhsm_wrote(sb, bindex, /*force*/0);
+
+out:
+ wbr_wh_read_unlock(wbr);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * create or remove the diropq.
+ */
+static struct dentry *do_diropq(struct dentry *dentry, aufs_bindex_t bindex,
+ unsigned int flags)
+{
+ struct dentry *opq_dentry, *h_dentry;
+ struct super_block *sb;
+ struct au_branch *br;
+ int err;
+
+ sb = dentry->d_sb;
+ br = au_sbr(sb, bindex);
+ h_dentry = au_h_dptr(dentry, bindex);
+ opq_dentry = vfsub_lkup_one(&diropq_name, h_dentry);
+ if (IS_ERR(opq_dentry))
+ goto out;
+
+ if (au_ftest_diropq(flags, CREATE)) {
+ err = link_or_create_wh(sb, bindex, opq_dentry);
+ if (!err) {
+ au_set_dbdiropq(dentry, bindex);
+ goto out; /* success */
+ }
+ } else {
+ struct path tmp = {
+ .dentry = opq_dentry,
+ .mnt = au_br_mnt(br)
+ };
+ err = do_unlink_wh(au_h_iptr(d_inode(dentry), bindex), &tmp);
+ if (!err)
+ au_set_dbdiropq(dentry, -1);
+ }
+ dput(opq_dentry);
+ opq_dentry = ERR_PTR(err);
+
+out:
+ return opq_dentry;
+}
+
+struct do_diropq_args {
+ struct dentry **errp;
+ struct dentry *dentry;
+ aufs_bindex_t bindex;
+ unsigned int flags;
+};
+
+static void call_do_diropq(void *args)
+{
+ struct do_diropq_args *a = args;
+ *a->errp = do_diropq(a->dentry, a->bindex, a->flags);
+}
+
+struct dentry *au_diropq_sio(struct dentry *dentry, aufs_bindex_t bindex,
+ unsigned int flags)
+{
+ struct dentry *diropq, *h_dentry;
+
+ h_dentry = au_h_dptr(dentry, bindex);
+ if (!au_test_h_perm_sio(d_inode(h_dentry), MAY_EXEC | MAY_WRITE))
+ diropq = do_diropq(dentry, bindex, flags);
+ else {
+ int wkq_err;
+ struct do_diropq_args args = {
+ .errp = &diropq,
+ .dentry = dentry,
+ .bindex = bindex,
+ .flags = flags
+ };
+
+ wkq_err = au_wkq_wait(call_do_diropq, &args);
+ if (unlikely(wkq_err))
+ diropq = ERR_PTR(wkq_err);
+ }
+
+ return diropq;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * lookup whiteout dentry.
+ * @h_parent: lower parent dentry which must exist and be locked
+ * @base_name: name of dentry which will be whiteouted
+ * returns dentry for whiteout.
+ */
+struct dentry *au_wh_lkup(struct dentry *h_parent, struct qstr *base_name,
+ struct au_branch *br)
+{
+ int err;
+ struct qstr wh_name;
+ struct dentry *wh_dentry;
+
+ err = au_wh_name_alloc(&wh_name, base_name);
+ wh_dentry = ERR_PTR(err);
+ if (!err) {
+ wh_dentry = vfsub_lkup_one(&wh_name, h_parent);
+ au_kfree_try_rcu(wh_name.name);
+ }
+ return wh_dentry;
+}
+
+/*
+ * link/create a whiteout for @dentry on @bindex.
+ */
+struct dentry *au_wh_create(struct dentry *dentry, aufs_bindex_t bindex,
+ struct dentry *h_parent)
+{
+ struct dentry *wh_dentry;
+ struct super_block *sb;
+ int err;
+
+ sb = dentry->d_sb;
+ wh_dentry = au_wh_lkup(h_parent, &dentry->d_name, au_sbr(sb, bindex));
+ if (!IS_ERR(wh_dentry) && d_is_negative(wh_dentry)) {
+ err = link_or_create_wh(sb, bindex, wh_dentry);
+ if (!err) {
+ au_set_dbwh(dentry, bindex);
+ au_fhsm_wrote(sb, bindex, /*force*/0);
+ } else {
+ dput(wh_dentry);
+ wh_dentry = ERR_PTR(err);
+ }
+ }
+
+ return wh_dentry;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* Delete all whiteouts in this directory on branch bindex. */
+static int del_wh_children(struct dentry *h_dentry, struct au_nhash *whlist,
+ aufs_bindex_t bindex, struct au_branch *br)
+{
+ int err;
+ unsigned long ul, n;
+ struct qstr wh_name;
+ char *p;
+ struct hlist_head *head;
+ struct au_vdir_wh *pos;
+ struct au_vdir_destr *str;
+
+ err = -ENOMEM;
+ p = (void *)__get_free_page(GFP_NOFS);
+ wh_name.name = p;
+ if (unlikely(!wh_name.name))
+ goto out;
+
+ err = 0;
+ memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN);
+ p += AUFS_WH_PFX_LEN;
+ n = whlist->nh_num;
+ head = whlist->nh_head;
+ for (ul = 0; !err && ul < n; ul++, head++) {
+ hlist_for_each_entry(pos, head, wh_hash) {
+ if (pos->wh_bindex != bindex)
+ continue;
+
+ str = &pos->wh_str;
+ if (str->len + AUFS_WH_PFX_LEN <= PATH_MAX) {
+ memcpy(p, str->name, str->len);
+ wh_name.len = AUFS_WH_PFX_LEN + str->len;
+ err = unlink_wh_name(h_dentry, &wh_name, br);
+ if (!err)
+ continue;
+ break;
+ }
+ AuIOErr("whiteout name too long %.*s\n",
+ str->len, str->name);
+ err = -EIO;
+ break;
+ }
+ }
+ free_page((unsigned long)wh_name.name);
+
+out:
+ return err;
+}
+
+struct del_wh_children_args {
+ int *errp;
+ struct dentry *h_dentry;
+ struct au_nhash *whlist;
+ aufs_bindex_t bindex;
+ struct au_branch *br;
+};
+
+static void call_del_wh_children(void *args)
+{
+ struct del_wh_children_args *a = args;
+ *a->errp = del_wh_children(a->h_dentry, a->whlist, a->bindex, a->br);
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct au_whtmp_rmdir *au_whtmp_rmdir_alloc(struct super_block *sb, gfp_t gfp)
+{
+ struct au_whtmp_rmdir *whtmp;
+ int err;
+ unsigned int rdhash;
+
+ SiMustAnyLock(sb);
+
+ whtmp = kzalloc(sizeof(*whtmp), gfp);
+ if (unlikely(!whtmp)) {
+ whtmp = ERR_PTR(-ENOMEM);
+ goto out;
+ }
+
+ /* no estimation for dir size */
+ rdhash = au_sbi(sb)->si_rdhash;
+ if (!rdhash)
+ rdhash = AUFS_RDHASH_DEF;
+ err = au_nhash_alloc(&whtmp->whlist, rdhash, gfp);
+ if (unlikely(err)) {
+ au_kfree_rcu(whtmp);
+ whtmp = ERR_PTR(err);
+ }
+
+out:
+ return whtmp;
+}
+
+void au_whtmp_rmdir_free(struct au_whtmp_rmdir *whtmp)
+{
+ if (whtmp->br)
+ au_lcnt_dec(&whtmp->br->br_count);
+ dput(whtmp->wh_dentry);
+ iput(whtmp->dir);
+ au_nhash_wh_free(&whtmp->whlist);
+ au_kfree_rcu(whtmp);
+}
+
+/*
+ * rmdir the whiteouted temporary named dir @h_dentry.
+ * @whlist: whiteouted children.
+ */
+int au_whtmp_rmdir(struct inode *dir, aufs_bindex_t bindex,
+ struct dentry *wh_dentry, struct au_nhash *whlist)
+{
+ int err;
+ unsigned int h_nlink;
+ struct path h_tmp;
+ struct inode *wh_inode, *h_dir;
+ struct au_branch *br;
+
+ h_dir = d_inode(wh_dentry->d_parent); /* dir inode is locked */
+ IMustLock(h_dir);
+
+ br = au_sbr(dir->i_sb, bindex);
+ wh_inode = d_inode(wh_dentry);
+ inode_lock_nested(wh_inode, AuLsc_I_CHILD);
+
+ /*
+ * someone else might change some whiteouts while we were sleeping.
+ * it means this whlist may have an obsoleted entry.
+ */
+ if (!au_test_h_perm_sio(wh_inode, MAY_EXEC | MAY_WRITE))
+ err = del_wh_children(wh_dentry, whlist, bindex, br);
+ else {
+ int wkq_err;
+ struct del_wh_children_args args = {
+ .errp = &err,
+ .h_dentry = wh_dentry,
+ .whlist = whlist,
+ .bindex = bindex,
+ .br = br
+ };
+
+ wkq_err = au_wkq_wait(call_del_wh_children, &args);
+ if (unlikely(wkq_err))
+ err = wkq_err;
+ }
+ inode_unlock(wh_inode);
+
+ if (!err) {
+ h_tmp.dentry = wh_dentry;
+ h_tmp.mnt = au_br_mnt(br);
+ h_nlink = h_dir->i_nlink;
+ err = vfsub_rmdir(h_dir, &h_tmp);
+ /* some fs doesn't change the parent nlink in some cases */
+ h_nlink -= h_dir->i_nlink;
+ }
+
+ if (!err) {
+ if (au_ibtop(dir) == bindex) {
+ /* todo: dir->i_mutex is necessary */
+ au_cpup_attr_timesizes(dir);
+ if (h_nlink)
+ vfsub_drop_nlink(dir);
+ }
+ return 0; /* success */
+ }
+
+ pr_warn("failed removing %pd(%d), ignored\n", wh_dentry, err);
+ return err;
+}
+
+static void call_rmdir_whtmp(void *args)
+{
+ int err;
+ aufs_bindex_t bindex;
+ struct au_whtmp_rmdir *a = args;
+ struct super_block *sb;
+ struct dentry *h_parent;
+ struct inode *h_dir;
+ struct au_hinode *hdir;
+
+ /* rmdir by nfsd may cause deadlock with this i_mutex */
+ /* inode_lock(a->dir); */
+ err = -EROFS;
+ sb = a->dir->i_sb;
+ si_read_lock(sb, !AuLock_FLUSH);
+ if (!au_br_writable(a->br->br_perm))
+ goto out;
+ bindex = au_br_index(sb, a->br->br_id);
+ if (unlikely(bindex < 0))
+ goto out;
+
+ err = -EIO;
+ ii_write_lock_parent(a->dir);
+ h_parent = dget_parent(a->wh_dentry);
+ h_dir = d_inode(h_parent);
+ hdir = au_hi(a->dir, bindex);
+ err = vfsub_mnt_want_write(au_br_mnt(a->br));
+ if (unlikely(err))
+ goto out_mnt;
+ au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
+ err = au_h_verify(a->wh_dentry, au_opt_udba(sb), h_dir, h_parent,
+ a->br);
+ if (!err)
+ err = au_whtmp_rmdir(a->dir, bindex, a->wh_dentry, &a->whlist);
+ au_hn_inode_unlock(hdir);
+ vfsub_mnt_drop_write(au_br_mnt(a->br));
+
+out_mnt:
+ dput(h_parent);
+ ii_write_unlock(a->dir);
+out:
+ /* inode_unlock(a->dir); */
+ au_whtmp_rmdir_free(a);
+ si_read_unlock(sb);
+ au_nwt_done(&au_sbi(sb)->si_nowait);
+ if (unlikely(err))
+ AuIOErr("err %d\n", err);
+}
+
+void au_whtmp_kick_rmdir(struct inode *dir, aufs_bindex_t bindex,
+ struct dentry *wh_dentry, struct au_whtmp_rmdir *args)
+{
+ int wkq_err;
+ struct super_block *sb;
+
+ IMustLock(dir);
+
+ /* all post-process will be done in do_rmdir_whtmp(). */
+ sb = dir->i_sb;
+ args->dir = au_igrab(dir);
+ args->br = au_sbr(sb, bindex);
+ au_lcnt_inc(&args->br->br_count);
+ args->wh_dentry = dget(wh_dentry);
+ wkq_err = au_wkq_nowait(call_rmdir_whtmp, args, sb, /*flags*/0);
+ if (unlikely(wkq_err)) {
+ pr_warn("rmdir error %pd (%d), ignored\n", wh_dentry, wkq_err);
+ au_whtmp_rmdir_free(args);
+ }
+}
diff --git a/fs/aufs/whout.h b/fs/aufs/whout.h
new file mode 100644
index 0000000000..06f69b24e5
--- /dev/null
+++ b/fs/aufs/whout.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * whiteout for logical deletion and opaque directory
+ */
+
+#ifndef __AUFS_WHOUT_H__
+#define __AUFS_WHOUT_H__
+
+#ifdef __KERNEL__
+
+#include "dir.h"
+
+/* whout.c */
+int au_wh_name_alloc(struct qstr *wh, const struct qstr *name);
+int au_wh_test(struct dentry *h_parent, struct qstr *wh_name, int try_sio);
+int au_diropq_test(struct dentry *h_dentry);
+struct au_branch;
+struct dentry *au_whtmp_lkup(struct dentry *h_parent, struct au_branch *br,
+ struct qstr *prefix);
+int au_whtmp_ren(struct dentry *h_dentry, struct au_branch *br);
+int au_wh_unlink_dentry(struct inode *h_dir, struct path *h_path,
+ struct dentry *dentry);
+int au_wh_init(struct au_branch *br, struct super_block *sb);
+
+/* diropq flags */
+#define AuDiropq_CREATE 1
+#define au_ftest_diropq(flags, name) ((flags) & AuDiropq_##name)
+#define au_fset_diropq(flags, name) \
+ do { (flags) |= AuDiropq_##name; } while (0)
+#define au_fclr_diropq(flags, name) \
+ do { (flags) &= ~AuDiropq_##name; } while (0)
+
+struct dentry *au_diropq_sio(struct dentry *dentry, aufs_bindex_t bindex,
+ unsigned int flags);
+struct dentry *au_wh_lkup(struct dentry *h_parent, struct qstr *base_name,
+ struct au_branch *br);
+struct dentry *au_wh_create(struct dentry *dentry, aufs_bindex_t bindex,
+ struct dentry *h_parent);
+
+/* real rmdir for the whiteout-ed dir */
+struct au_whtmp_rmdir {
+ struct inode *dir;
+ struct au_branch *br;
+ struct dentry *wh_dentry;
+ struct au_nhash whlist;
+};
+
+struct au_whtmp_rmdir *au_whtmp_rmdir_alloc(struct super_block *sb, gfp_t gfp);
+void au_whtmp_rmdir_free(struct au_whtmp_rmdir *whtmp);
+int au_whtmp_rmdir(struct inode *dir, aufs_bindex_t bindex,
+ struct dentry *wh_dentry, struct au_nhash *whlist);
+void au_whtmp_kick_rmdir(struct inode *dir, aufs_bindex_t bindex,
+ struct dentry *wh_dentry, struct au_whtmp_rmdir *args);
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct dentry *au_diropq_create(struct dentry *dentry,
+ aufs_bindex_t bindex)
+{
+ return au_diropq_sio(dentry, bindex, AuDiropq_CREATE);
+}
+
+static inline int au_diropq_remove(struct dentry *dentry, aufs_bindex_t bindex)
+{
+ return PTR_ERR(au_diropq_sio(dentry, bindex, !AuDiropq_CREATE));
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_WHOUT_H__ */
diff --git a/fs/aufs/wkq.c b/fs/aufs/wkq.c
new file mode 100644
index 0000000000..b0dd8df4e4
--- /dev/null
+++ b/fs/aufs/wkq.c
@@ -0,0 +1,392 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * workqueue for asynchronous/super-io operations
+ * todo: try new credential scheme
+ */
+
+#include <linux/module.h>
+#include "aufs.h"
+
+/* internal workqueue named AUFS_WKQ_NAME */
+
+static struct workqueue_struct *au_wkq;
+
+struct au_wkinfo {
+ struct work_struct wk;
+ struct kobject *kobj;
+
+ unsigned int flags; /* see wkq.h */
+
+ au_wkq_func_t func;
+ void *args;
+
+#ifdef CONFIG_LOCKDEP
+ int dont_check;
+ struct held_lock **hlock;
+#endif
+
+ struct completion *comp;
+};
+
+/* ---------------------------------------------------------------------- */
+/*
+ * Aufs passes some operations to the workqueue such as the internal copyup.
+ * This scheme looks rather unnatural for LOCKDEP debugging feature, since the
+ * job run by workqueue depends upon the locks acquired in the other task.
+ * Delegating a small operation to the workqueue, aufs passes its lockdep
+ * information too. And the job in the workqueue restores the info in order to
+ * pretend as if it acquired those locks. This is just to make LOCKDEP work
+ * correctly and expectedly.
+ */
+
+#ifndef CONFIG_LOCKDEP
+AuStubInt0(au_wkq_lockdep_alloc, struct au_wkinfo *wkinfo);
+AuStubVoid(au_wkq_lockdep_free, struct au_wkinfo *wkinfo);
+AuStubVoid(au_wkq_lockdep_pre, struct au_wkinfo *wkinfo);
+AuStubVoid(au_wkq_lockdep_post, struct au_wkinfo *wkinfo);
+AuStubVoid(au_wkq_lockdep_init, struct au_wkinfo *wkinfo);
+#else
+static void au_wkq_lockdep_init(struct au_wkinfo *wkinfo)
+{
+ wkinfo->hlock = NULL;
+ wkinfo->dont_check = 0;
+}
+
+/*
+ * 1: matched
+ * 0: unmatched
+ */
+static int au_wkq_lockdep_test(struct lock_class_key *key, const char *name)
+{
+ static DEFINE_SPINLOCK(spin);
+ static struct {
+ char *name;
+ struct lock_class_key *key;
+ } a[] = {
+ { .name = "&sbinfo->si_rwsem" },
+ { .name = "&finfo->fi_rwsem" },
+ { .name = "&dinfo->di_rwsem" },
+ { .name = "&iinfo->ii_rwsem" }
+ };
+ static int set;
+ int i;
+
+ /* lockless read from 'set.' see below */
+ if (set == ARRAY_SIZE(a)) {
+ for (i = 0; i < ARRAY_SIZE(a); i++)
+ if (a[i].key == key)
+ goto match;
+ goto unmatch;
+ }
+
+ spin_lock(&spin);
+ if (set)
+ for (i = 0; i < ARRAY_SIZE(a); i++)
+ if (a[i].key == key) {
+ spin_unlock(&spin);
+ goto match;
+ }
+ for (i = 0; i < ARRAY_SIZE(a); i++) {
+ if (a[i].key) {
+ if (unlikely(a[i].key == key)) { /* rare but possible */
+ spin_unlock(&spin);
+ goto match;
+ } else
+ continue;
+ }
+ if (strstr(a[i].name, name)) {
+ /*
+ * the order of these three lines is important for the
+ * lockless read above.
+ */
+ a[i].key = key;
+ spin_unlock(&spin);
+ set++;
+ /* AuDbg("%d, %s\n", set, name); */
+ goto match;
+ }
+ }
+ spin_unlock(&spin);
+ goto unmatch;
+
+match:
+ return 1;
+unmatch:
+ return 0;
+}
+
+static int au_wkq_lockdep_alloc(struct au_wkinfo *wkinfo)
+{
+ int err, n;
+ struct task_struct *curr;
+ struct held_lock **hl, *held_locks, *p;
+
+ err = 0;
+ curr = current;
+ wkinfo->dont_check = lockdep_recursing(curr);
+ if (wkinfo->dont_check)
+ goto out;
+ n = curr->lockdep_depth;
+ if (!n)
+ goto out;
+
+ err = -ENOMEM;
+ wkinfo->hlock = kmalloc_array(n + 1, sizeof(*wkinfo->hlock), GFP_NOFS);
+ if (unlikely(!wkinfo->hlock))
+ goto out;
+
+ err = 0;
+#if 0
+ if (0 && au_debug_test()) /* left for debugging */
+ lockdep_print_held_locks(curr);
+#endif
+ held_locks = curr->held_locks;
+ hl = wkinfo->hlock;
+ while (n--) {
+ p = held_locks++;
+ if (au_wkq_lockdep_test(p->instance->key, p->instance->name))
+ *hl++ = p;
+ }
+ *hl = NULL;
+
+out:
+ return err;
+}
+
+static void au_wkq_lockdep_free(struct au_wkinfo *wkinfo)
+{
+ au_kfree_try_rcu(wkinfo->hlock);
+}
+
+static void au_wkq_lockdep_pre(struct au_wkinfo *wkinfo)
+{
+ struct held_lock *p, **hl = wkinfo->hlock;
+ int subclass;
+
+ if (wkinfo->dont_check)
+ lockdep_off();
+ if (!hl)
+ return;
+ while ((p = *hl++)) { /* assignment */
+ subclass = lockdep_hlock_class(p)->subclass;
+ /* AuDbg("%s, %d\n", p->instance->name, subclass); */
+ if (p->read)
+ rwsem_acquire_read(p->instance, subclass, 0,
+ /*p->acquire_ip*/_RET_IP_);
+ else
+ rwsem_acquire(p->instance, subclass, 0,
+ /*p->acquire_ip*/_RET_IP_);
+ }
+}
+
+static void au_wkq_lockdep_post(struct au_wkinfo *wkinfo)
+{
+ struct held_lock *p, **hl = wkinfo->hlock;
+
+ if (wkinfo->dont_check)
+ lockdep_on();
+ if (!hl)
+ return;
+ while ((p = *hl++)) /* assignment */
+ rwsem_release(p->instance, 0, /*p->acquire_ip*/_RET_IP_);
+}
+#endif
+
+static void wkq_func(struct work_struct *wk)
+{
+ struct au_wkinfo *wkinfo = container_of(wk, struct au_wkinfo, wk);
+
+ AuDebugOn(!uid_eq(current_fsuid(), GLOBAL_ROOT_UID));
+ AuDebugOn(rlimit(RLIMIT_FSIZE) != RLIM_INFINITY);
+
+ au_wkq_lockdep_pre(wkinfo);
+ wkinfo->func(wkinfo->args);
+ au_wkq_lockdep_post(wkinfo);
+ if (au_ftest_wkq(wkinfo->flags, WAIT))
+ complete(wkinfo->comp);
+ else {
+ kobject_put(wkinfo->kobj);
+ module_put(THIS_MODULE); /* todo: ?? */
+ au_kfree_rcu(wkinfo);
+ }
+}
+
+/*
+ * Since struct completion is large, try allocating it dynamically.
+ */
+#if 1 /* defined(CONFIG_4KSTACKS) || defined(AuTest4KSTACKS) */
+#define AuWkqCompDeclare(name) struct completion *comp = NULL
+
+static int au_wkq_comp_alloc(struct au_wkinfo *wkinfo, struct completion **comp)
+{
+ *comp = kmalloc(sizeof(**comp), GFP_NOFS);
+ if (*comp) {
+ init_completion(*comp);
+ wkinfo->comp = *comp;
+ return 0;
+ }
+ return -ENOMEM;
+}
+
+static void au_wkq_comp_free(struct completion *comp)
+{
+ au_kfree_rcu(comp);
+}
+
+#else
+
+/* no braces */
+#define AuWkqCompDeclare(name) \
+ DECLARE_COMPLETION_ONSTACK(_ ## name); \
+ struct completion *comp = &_ ## name
+
+static int au_wkq_comp_alloc(struct au_wkinfo *wkinfo, struct completion **comp)
+{
+ wkinfo->comp = *comp;
+ return 0;
+}
+
+static void au_wkq_comp_free(struct completion *comp __maybe_unused)
+{
+ /* empty */
+}
+#endif /* 4KSTACKS */
+
+static void au_wkq_run(struct au_wkinfo *wkinfo)
+{
+ if (au_ftest_wkq(wkinfo->flags, NEST)) {
+ if (au_wkq_test()) {
+ AuWarn1("wkq from wkq, unless silly-rename on NFS,"
+ " due to a dead dir by UDBA,"
+ " or async xino write?\n");
+ AuDebugOn(au_ftest_wkq(wkinfo->flags, WAIT));
+ }
+ } else
+ au_dbg_verify_kthread();
+
+ if (au_ftest_wkq(wkinfo->flags, WAIT)) {
+ INIT_WORK_ONSTACK(&wkinfo->wk, wkq_func);
+ queue_work(au_wkq, &wkinfo->wk);
+ } else {
+ INIT_WORK(&wkinfo->wk, wkq_func);
+ schedule_work(&wkinfo->wk);
+ }
+}
+
+/*
+ * Be careful. It is easy to make deadlock happen.
+ * processA: lock, wkq and wait
+ * processB: wkq and wait, lock in wkq
+ * --> deadlock
+ */
+int au_wkq_do_wait(unsigned int flags, au_wkq_func_t func, void *args)
+{
+ int err;
+ AuWkqCompDeclare(comp);
+ struct au_wkinfo wkinfo = {
+ .flags = flags,
+ .func = func,
+ .args = args
+ };
+
+ err = au_wkq_comp_alloc(&wkinfo, &comp);
+ if (unlikely(err))
+ goto out;
+ err = au_wkq_lockdep_alloc(&wkinfo);
+ if (unlikely(err))
+ goto out_comp;
+ if (!err) {
+ au_wkq_run(&wkinfo);
+ /* no timeout, no interrupt */
+ wait_for_completion(wkinfo.comp);
+ }
+ au_wkq_lockdep_free(&wkinfo);
+
+out_comp:
+ au_wkq_comp_free(comp);
+out:
+ destroy_work_on_stack(&wkinfo.wk);
+ return err;
+}
+
+/*
+ * Note: dget/dput() in func for aufs dentries are not supported. It will be a
+ * problem in a concurrent umounting.
+ */
+int au_wkq_nowait(au_wkq_func_t func, void *args, struct super_block *sb,
+ unsigned int flags)
+{
+ int err;
+ struct au_wkinfo *wkinfo;
+
+ atomic_inc(&au_sbi(sb)->si_nowait.nw_len);
+
+ /*
+ * wkq_func() must free this wkinfo.
+ * it highly depends upon the implementation of workqueue.
+ */
+ err = 0;
+ wkinfo = kmalloc(sizeof(*wkinfo), GFP_NOFS);
+ if (wkinfo) {
+ wkinfo->kobj = &au_sbi(sb)->si_kobj;
+ wkinfo->flags = flags & ~AuWkq_WAIT;
+ wkinfo->func = func;
+ wkinfo->args = args;
+ wkinfo->comp = NULL;
+ au_wkq_lockdep_init(wkinfo);
+ kobject_get(wkinfo->kobj);
+ __module_get(THIS_MODULE); /* todo: ?? */
+
+ au_wkq_run(wkinfo);
+ } else {
+ err = -ENOMEM;
+ au_nwt_done(&au_sbi(sb)->si_nowait);
+ }
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_nwt_init(struct au_nowait_tasks *nwt)
+{
+ atomic_set(&nwt->nw_len, 0);
+ /* smp_mb(); */ /* atomic_set */
+ init_waitqueue_head(&nwt->nw_wq);
+}
+
+void au_wkq_fin(void)
+{
+ destroy_workqueue(au_wkq);
+}
+
+int __init au_wkq_init(void)
+{
+ int err;
+
+ err = 0;
+ au_wkq = alloc_workqueue(AUFS_WKQ_NAME, 0, WQ_DFL_ACTIVE);
+ if (IS_ERR(au_wkq))
+ err = PTR_ERR(au_wkq);
+ else if (!au_wkq)
+ err = -ENOMEM;
+
+ return err;
+}
diff --git a/fs/aufs/wkq.h b/fs/aufs/wkq.h
new file mode 100644
index 0000000000..235370d916
--- /dev/null
+++ b/fs/aufs/wkq.h
@@ -0,0 +1,89 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * workqueue for asynchronous/super-io operations
+ * todo: try new credentials management scheme
+ */
+
+#ifndef __AUFS_WKQ_H__
+#define __AUFS_WKQ_H__
+
+#ifdef __KERNEL__
+
+#include <linux/wait.h>
+
+struct super_block;
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * in the next operation, wait for the 'nowait' tasks in system-wide workqueue
+ */
+struct au_nowait_tasks {
+ atomic_t nw_len;
+ wait_queue_head_t nw_wq;
+};
+
+/* ---------------------------------------------------------------------- */
+
+typedef void (*au_wkq_func_t)(void *args);
+
+/* wkq flags */
+#define AuWkq_WAIT 1
+#define AuWkq_NEST (1 << 1)
+#define au_ftest_wkq(flags, name) ((flags) & AuWkq_##name)
+#define au_fset_wkq(flags, name) \
+ do { (flags) |= AuWkq_##name; } while (0)
+#define au_fclr_wkq(flags, name) \
+ do { (flags) &= ~AuWkq_##name; } while (0)
+
+/* wkq.c */
+int au_wkq_do_wait(unsigned int flags, au_wkq_func_t func, void *args);
+int au_wkq_nowait(au_wkq_func_t func, void *args, struct super_block *sb,
+ unsigned int flags);
+void au_nwt_init(struct au_nowait_tasks *nwt);
+int __init au_wkq_init(void);
+void au_wkq_fin(void);
+
+/* ---------------------------------------------------------------------- */
+
+static inline int au_wkq_test(void)
+{
+ return current->flags & PF_WQ_WORKER;
+}
+
+static inline int au_wkq_wait(au_wkq_func_t func, void *args)
+{
+ return au_wkq_do_wait(AuWkq_WAIT, func, args);
+}
+
+static inline void au_nwt_done(struct au_nowait_tasks *nwt)
+{
+ if (atomic_dec_and_test(&nwt->nw_len))
+ wake_up_all(&nwt->nw_wq);
+}
+
+static inline int au_nwt_flush(struct au_nowait_tasks *nwt)
+{
+ wait_event(nwt->nw_wq, !atomic_read(&nwt->nw_len));
+ return 0;
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_WKQ_H__ */
diff --git a/fs/aufs/xattr.c b/fs/aufs/xattr.c
new file mode 100644
index 0000000000..8e56b15c53
--- /dev/null
+++ b/fs/aufs/xattr.c
@@ -0,0 +1,356 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2014-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * handling xattr functions
+ */
+
+#include <linux/fs.h>
+#include <linux/posix_acl_xattr.h>
+#include <linux/xattr.h>
+#include "aufs.h"
+
+static int au_xattr_ignore(int err, char *name, unsigned int ignore_flags)
+{
+ if (!ignore_flags)
+ goto out;
+ switch (err) {
+ case -ENOMEM:
+ case -EDQUOT:
+ goto out;
+ }
+
+ if ((ignore_flags & AuBrAttr_ICEX) == AuBrAttr_ICEX) {
+ err = 0;
+ goto out;
+ }
+
+#define cmp(brattr, prefix) do { \
+ if (!strncmp(name, XATTR_##prefix##_PREFIX, \
+ XATTR_##prefix##_PREFIX_LEN)) { \
+ if (ignore_flags & AuBrAttr_ICEX_##brattr) \
+ err = 0; \
+ goto out; \
+ } \
+ } while (0)
+
+ cmp(SEC, SECURITY);
+ cmp(SYS, SYSTEM);
+ cmp(TR, TRUSTED);
+ cmp(USR, USER);
+#undef cmp
+
+ if (ignore_flags & AuBrAttr_ICEX_OTH)
+ err = 0;
+
+out:
+ return err;
+}
+
+static const int au_xattr_out_of_list = AuBrAttr_ICEX_OTH << 1;
+
+static int au_do_cpup_xattr(struct dentry *h_dst, struct dentry *h_src,
+ char *name, char **buf, unsigned int ignore_flags,
+ unsigned int verbose)
+{
+ int err;
+ ssize_t ssz;
+ struct inode *h_idst;
+
+ ssz = vfs_getxattr_alloc(h_src, name, buf, 0, GFP_NOFS);
+ err = ssz;
+ if (unlikely(err <= 0)) {
+ if (err == -ENODATA
+ || (err == -EOPNOTSUPP
+ && ((ignore_flags & au_xattr_out_of_list)
+ || (au_test_nfs_noacl(d_inode(h_src))
+ && (!strcmp(name, XATTR_NAME_POSIX_ACL_ACCESS)
+ || !strcmp(name,
+ XATTR_NAME_POSIX_ACL_DEFAULT))))
+ ))
+ err = 0;
+ if (err && (verbose || au_debug_test()))
+ pr_err("%s, err %d\n", name, err);
+ goto out;
+ }
+
+ /* unlock it temporary */
+ h_idst = d_inode(h_dst);
+ inode_unlock(h_idst);
+ err = vfsub_setxattr(h_dst, name, *buf, ssz, /*flags*/0);
+ inode_lock_nested(h_idst, AuLsc_I_CHILD2);
+ if (unlikely(err)) {
+ if (verbose || au_debug_test())
+ pr_err("%s, err %d\n", name, err);
+ err = au_xattr_ignore(err, name, ignore_flags);
+ }
+
+out:
+ return err;
+}
+
+int au_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, int ignore_flags,
+ unsigned int verbose)
+{
+ int err, unlocked, acl_access, acl_default;
+ ssize_t ssz;
+ struct inode *h_isrc, *h_idst;
+ char *value, *p, *o, *e;
+
+ /* try stopping to update the source inode while we are referencing */
+ /* there should not be the parent-child relationship between them */
+ h_isrc = d_inode(h_src);
+ h_idst = d_inode(h_dst);
+ inode_unlock(h_idst);
+ inode_lock_shared_nested(h_isrc, AuLsc_I_CHILD);
+ inode_lock_nested(h_idst, AuLsc_I_CHILD2);
+ unlocked = 0;
+
+ /* some filesystems don't list POSIX ACL, for example tmpfs */
+ ssz = vfs_listxattr(h_src, NULL, 0);
+ err = ssz;
+ if (unlikely(err < 0)) {
+ AuTraceErr(err);
+ if (err == -ENODATA
+ || err == -EOPNOTSUPP)
+ err = 0; /* ignore */
+ goto out;
+ }
+
+ err = 0;
+ p = NULL;
+ o = NULL;
+ if (ssz) {
+ err = -ENOMEM;
+ p = kmalloc(ssz, GFP_NOFS);
+ o = p;
+ if (unlikely(!p))
+ goto out;
+ err = vfs_listxattr(h_src, p, ssz);
+ }
+ inode_unlock_shared(h_isrc);
+ unlocked = 1;
+ AuDbg("err %d, ssz %zd\n", err, ssz);
+ if (unlikely(err < 0))
+ goto out_free;
+
+ err = 0;
+ e = p + ssz;
+ value = NULL;
+ acl_access = 0;
+ acl_default = 0;
+ while (!err && p < e) {
+ acl_access |= !strncmp(p, XATTR_NAME_POSIX_ACL_ACCESS,
+ sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1);
+ acl_default |= !strncmp(p, XATTR_NAME_POSIX_ACL_DEFAULT,
+ sizeof(XATTR_NAME_POSIX_ACL_DEFAULT)
+ - 1);
+ err = au_do_cpup_xattr(h_dst, h_src, p, &value, ignore_flags,
+ verbose);
+ p += strlen(p) + 1;
+ }
+ AuTraceErr(err);
+ ignore_flags |= au_xattr_out_of_list;
+ if (!err && !acl_access) {
+ err = au_do_cpup_xattr(h_dst, h_src,
+ XATTR_NAME_POSIX_ACL_ACCESS, &value,
+ ignore_flags, verbose);
+ AuTraceErr(err);
+ }
+ if (!err && !acl_default) {
+ err = au_do_cpup_xattr(h_dst, h_src,
+ XATTR_NAME_POSIX_ACL_DEFAULT, &value,
+ ignore_flags, verbose);
+ AuTraceErr(err);
+ }
+
+ au_kfree_try_rcu(value);
+
+out_free:
+ au_kfree_try_rcu(o);
+out:
+ if (!unlocked)
+ inode_unlock_shared(h_isrc);
+ AuTraceErr(err);
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_smack_reentering(struct super_block *sb)
+{
+#if IS_ENABLED(CONFIG_SECURITY_SMACK)
+ /*
+ * as a part of lookup, smack_d_instantiate() is called, and it calls
+ * i_op->getxattr(). ouch.
+ */
+ return si_pid_test(sb);
+#else
+ return 0;
+#endif
+}
+
+enum {
+ AU_XATTR_LIST,
+ AU_XATTR_GET
+};
+
+struct au_lgxattr {
+ int type;
+ union {
+ struct {
+ char *list;
+ size_t size;
+ } list;
+ struct {
+ const char *name;
+ void *value;
+ size_t size;
+ } get;
+ } u;
+};
+
+static ssize_t au_lgxattr(struct dentry *dentry, struct au_lgxattr *arg)
+{
+ ssize_t err;
+ int reenter;
+ struct path h_path;
+ struct super_block *sb;
+
+ sb = dentry->d_sb;
+ reenter = au_smack_reentering(sb);
+ if (!reenter) {
+ err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+ if (unlikely(err))
+ goto out;
+ }
+ err = au_h_path_getattr(dentry, /*force*/1, &h_path, reenter);
+ if (unlikely(err))
+ goto out_si;
+ if (unlikely(!h_path.dentry))
+ /* illegally overlapped or something */
+ goto out_di; /* pretending success */
+
+ /* always topmost entry only */
+ switch (arg->type) {
+ case AU_XATTR_LIST:
+ err = vfs_listxattr(h_path.dentry,
+ arg->u.list.list, arg->u.list.size);
+ break;
+ case AU_XATTR_GET:
+ AuDebugOn(d_is_negative(h_path.dentry));
+ err = vfs_getxattr(h_path.dentry,
+ arg->u.get.name, arg->u.get.value,
+ arg->u.get.size);
+ break;
+ }
+
+out_di:
+ if (!reenter)
+ di_read_unlock(dentry, AuLock_IR);
+out_si:
+ if (!reenter)
+ si_read_unlock(sb);
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+ssize_t aufs_listxattr(struct dentry *dentry, char *list, size_t size)
+{
+ struct au_lgxattr arg = {
+ .type = AU_XATTR_LIST,
+ .u.list = {
+ .list = list,
+ .size = size
+ },
+ };
+
+ return au_lgxattr(dentry, &arg);
+}
+
+static ssize_t au_getxattr(struct dentry *dentry,
+ struct inode *inode __maybe_unused,
+ const char *name, void *value, size_t size)
+{
+ struct au_lgxattr arg = {
+ .type = AU_XATTR_GET,
+ .u.get = {
+ .name = name,
+ .value = value,
+ .size = size
+ },
+ };
+
+ return au_lgxattr(dentry, &arg);
+}
+
+static int au_setxattr(struct dentry *dentry, struct inode *inode,
+ const char *name, const void *value, size_t size,
+ int flags)
+{
+ struct au_sxattr arg = {
+ .type = AU_XATTR_SET,
+ .u.set = {
+ .name = name,
+ .value = value,
+ .size = size,
+ .flags = flags
+ },
+ };
+
+ return au_sxattr(dentry, inode, &arg);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_xattr_get(const struct xattr_handler *handler,
+ struct dentry *dentry, struct inode *inode,
+ const char *name, void *buffer, size_t size)
+{
+ return au_getxattr(dentry, inode, name, buffer, size);
+}
+
+static int au_xattr_set(const struct xattr_handler *handler,
+ struct dentry *dentry, struct inode *inode,
+ const char *name, const void *value, size_t size,
+ int flags)
+{
+ return au_setxattr(dentry, inode, name, value, size, flags);
+}
+
+static const struct xattr_handler au_xattr_handler = {
+ .name = "",
+ .prefix = "",
+ .get = au_xattr_get,
+ .set = au_xattr_set
+};
+
+static const struct xattr_handler *au_xattr_handlers[] = {
+#ifdef CONFIG_FS_POSIX_ACL
+ &posix_acl_access_xattr_handler,
+ &posix_acl_default_xattr_handler,
+#endif
+ &au_xattr_handler, /* must be last */
+ NULL
+};
+
+void au_xattr_init(struct super_block *sb)
+{
+ sb->s_xattr = au_xattr_handlers;
+}
diff --git a/fs/aufs/xino.c b/fs/aufs/xino.c
new file mode 100644
index 0000000000..35ea33469d
--- /dev/null
+++ b/fs/aufs/xino.c
@@ -0,0 +1,1965 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * external inode number translation table and bitmap
+ *
+ * things to consider
+ * - the lifetime
+ * + au_xino object
+ * + XINO files (xino, xib, xigen)
+ * + dynamic debugfs entries (xiN)
+ * + static debugfs entries (xib, xigen)
+ * + static sysfs entry (xi_path)
+ * - several entry points to handle them.
+ * + mount(2) without xino option (default)
+ * + mount(2) with xino option
+ * + mount(2) with noxino option
+ * + umount(2)
+ * + remount with add/del branches
+ * + remount with xino/noxino options
+ */
+
+#include <linux/seq_file.h>
+#include <linux/statfs.h>
+#include "aufs.h"
+
+static aufs_bindex_t sbr_find_shared(struct super_block *sb, aufs_bindex_t btop,
+ aufs_bindex_t bbot,
+ struct super_block *h_sb)
+{
+ /* todo: try binary-search if the branches are many */
+ for (; btop <= bbot; btop++)
+ if (h_sb == au_sbr_sb(sb, btop))
+ return btop;
+ return -1;
+}
+
+/*
+ * find another branch who is on the same filesystem of the specified
+ * branch{@btgt}. search until @bbot.
+ */
+static aufs_bindex_t is_sb_shared(struct super_block *sb, aufs_bindex_t btgt,
+ aufs_bindex_t bbot)
+{
+ aufs_bindex_t bindex;
+ struct super_block *tgt_sb;
+
+ tgt_sb = au_sbr_sb(sb, btgt);
+ bindex = sbr_find_shared(sb, /*btop*/0, btgt - 1, tgt_sb);
+ if (bindex < 0)
+ bindex = sbr_find_shared(sb, btgt + 1, bbot, tgt_sb);
+
+ return bindex;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * stop unnecessary notify events at creating xino files
+ */
+
+aufs_bindex_t au_xi_root(struct super_block *sb, struct dentry *dentry)
+{
+ aufs_bindex_t bfound, bindex, bbot;
+ struct dentry *parent;
+ struct au_branch *br;
+
+ bfound = -1;
+ parent = dentry->d_parent; /* safe d_parent access */
+ bbot = au_sbbot(sb);
+ for (bindex = 0; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ if (au_br_dentry(br) == parent) {
+ bfound = bindex;
+ break;
+ }
+ }
+
+ AuDbg("bfound b%d\n", bfound);
+ return bfound;
+}
+
+struct au_xino_lock_dir {
+ struct au_hinode *hdir;
+ struct dentry *parent;
+ struct inode *dir;
+};
+
+static struct dentry *au_dget_parent_lock(struct dentry *dentry,
+ unsigned int lsc)
+{
+ struct dentry *parent;
+ struct inode *dir;
+
+ parent = dget_parent(dentry);
+ dir = d_inode(parent);
+ inode_lock_nested(dir, lsc);
+#if 0 /* it should not happen */
+ spin_lock(&dentry->d_lock);
+ if (unlikely(dentry->d_parent != parent)) {
+ spin_unlock(&dentry->d_lock);
+ inode_unlock(dir);
+ dput(parent);
+ parent = NULL;
+ goto out;
+ }
+ spin_unlock(&dentry->d_lock);
+
+out:
+#endif
+ return parent;
+}
+
+static void au_xino_lock_dir(struct super_block *sb, struct path *xipath,
+ struct au_xino_lock_dir *ldir)
+{
+ aufs_bindex_t bindex;
+
+ ldir->hdir = NULL;
+ bindex = au_xi_root(sb, xipath->dentry);
+ if (bindex >= 0) {
+ /* rw branch root */
+ ldir->hdir = au_hi(d_inode(sb->s_root), bindex);
+ au_hn_inode_lock_nested(ldir->hdir, AuLsc_I_PARENT);
+ } else {
+ /* other */
+ ldir->parent = au_dget_parent_lock(xipath->dentry,
+ AuLsc_I_PARENT);
+ ldir->dir = d_inode(ldir->parent);
+ }
+}
+
+static void au_xino_unlock_dir(struct au_xino_lock_dir *ldir)
+{
+ if (ldir->hdir)
+ au_hn_inode_unlock(ldir->hdir);
+ else {
+ inode_unlock(ldir->dir);
+ dput(ldir->parent);
+ }
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * create and set a new xino file
+ */
+struct file *au_xino_create(struct super_block *sb, char *fpath, int silent,
+ int wbrtop)
+{
+ struct file *file;
+ struct dentry *h_parent, *d;
+ struct inode *h_dir, *inode;
+ int err;
+ static DEFINE_MUTEX(mtx);
+
+ /*
+ * at mount-time, and the xino file is the default path,
+ * hnotify is disabled so we have no notify events to ignore.
+ * when a user specified the xino, we cannot get au_hdir to be ignored.
+ */
+ if (!wbrtop)
+ mutex_lock(&mtx);
+ file = vfsub_filp_open(fpath, O_RDWR | O_CREAT | O_EXCL | O_LARGEFILE
+ /* | __FMODE_NONOTIFY */,
+ 0666);
+ if (IS_ERR(file)) {
+ if (!wbrtop)
+ mutex_unlock(&mtx);
+ if (!silent)
+ pr_err("open %s(%ld)\n", fpath, PTR_ERR(file));
+ return file;
+ }
+
+ /* keep file count */
+ err = 0;
+ d = file->f_path.dentry;
+ h_parent = au_dget_parent_lock(d, AuLsc_I_PARENT);
+ if (!wbrtop)
+ mutex_unlock(&mtx);
+ /* mnt_want_write() is unnecessary here */
+ h_dir = d_inode(h_parent);
+ inode = file_inode(file);
+ /* no delegation since it is just created */
+ if (inode->i_nlink)
+ err = vfsub_unlink(h_dir, &file->f_path, /*delegated*/NULL,
+ /*force*/0);
+ inode_unlock(h_dir);
+ dput(h_parent);
+ if (unlikely(err)) {
+ if (!silent)
+ pr_err("unlink %s(%d)\n", fpath, err);
+ goto out;
+ }
+
+ err = -EINVAL;
+ if (unlikely(sb == d->d_sb)) {
+ if (!silent)
+ pr_err("%s must be outside\n", fpath);
+ goto out;
+ }
+ if (unlikely(au_test_fs_bad_xino(d->d_sb))) {
+ if (!silent)
+ pr_err("xino doesn't support %s(%s)\n",
+ fpath, au_sbtype(d->d_sb));
+ goto out;
+ }
+ return file; /* success */
+
+out:
+ fput(file);
+ file = ERR_PTR(err);
+ return file;
+}
+
+/*
+ * create a new xinofile at the same place/path as @base.
+ */
+struct file *au_xino_create2(struct super_block *sb, struct path *base,
+ struct file *copy_src)
+{
+ struct file *file;
+ struct dentry *dentry, *parent;
+ struct inode *dir, *delegated;
+ struct qstr *name;
+ struct path path;
+ int err, do_unlock;
+ struct au_xino_lock_dir ldir;
+
+ do_unlock = 1;
+ au_xino_lock_dir(sb, base, &ldir);
+ dentry = base->dentry;
+ parent = dentry->d_parent; /* dir inode is locked */
+ dir = d_inode(parent);
+ IMustLock(dir);
+
+ name = &dentry->d_name;
+ path.dentry = vfsub_lookup_one_len(name->name, parent, name->len);
+ if (IS_ERR(path.dentry)) {
+ file = (void *)path.dentry;
+ pr_err("%pd lookup err %ld\n", dentry, PTR_ERR(path.dentry));
+ goto out;
+ }
+
+ /* no need to mnt_want_write() since we call dentry_open() later */
+ err = vfs_create(dir, path.dentry, 0666, NULL);
+ if (unlikely(err)) {
+ file = ERR_PTR(err);
+ pr_err("%pd create err %d\n", dentry, err);
+ goto out_dput;
+ }
+
+ path.mnt = base->mnt;
+ file = vfsub_dentry_open(&path,
+ O_RDWR | O_CREAT | O_EXCL | O_LARGEFILE
+ /* | __FMODE_NONOTIFY */);
+ if (IS_ERR(file)) {
+ pr_err("%pd open err %ld\n", dentry, PTR_ERR(file));
+ goto out_dput;
+ }
+
+ delegated = NULL;
+ err = vfsub_unlink(dir, &file->f_path, &delegated, /*force*/0);
+ au_xino_unlock_dir(&ldir);
+ do_unlock = 0;
+ if (unlikely(err == -EWOULDBLOCK)) {
+ pr_warn("cannot retry for NFSv4 delegation"
+ " for an internal unlink\n");
+ iput(delegated);
+ }
+ if (unlikely(err)) {
+ pr_err("%pd unlink err %d\n", dentry, err);
+ goto out_fput;
+ }
+
+ if (copy_src) {
+ /* no one can touch copy_src xino */
+ err = au_copy_file(file, copy_src, vfsub_f_size_read(copy_src));
+ if (unlikely(err)) {
+ pr_err("%pd copy err %d\n", dentry, err);
+ goto out_fput;
+ }
+ }
+ goto out_dput; /* success */
+
+out_fput:
+ fput(file);
+ file = ERR_PTR(err);
+out_dput:
+ dput(path.dentry);
+out:
+ if (do_unlock)
+ au_xino_unlock_dir(&ldir);
+ return file;
+}
+
+struct file *au_xino_file1(struct au_xino *xi)
+{
+ struct file *file;
+ unsigned int u, nfile;
+
+ file = NULL;
+ nfile = xi->xi_nfile;
+ for (u = 0; u < nfile; u++) {
+ file = xi->xi_file[u];
+ if (file)
+ break;
+ }
+
+ return file;
+}
+
+static int au_xino_file_set(struct au_xino *xi, int idx, struct file *file)
+{
+ int err;
+ struct file *f;
+ void *p;
+
+ if (file)
+ get_file(file);
+
+ err = 0;
+ f = NULL;
+ if (idx < xi->xi_nfile) {
+ f = xi->xi_file[idx];
+ if (f)
+ fput(f);
+ } else {
+ p = au_kzrealloc(xi->xi_file,
+ sizeof(*xi->xi_file) * xi->xi_nfile,
+ sizeof(*xi->xi_file) * (idx + 1),
+ GFP_NOFS, /*may_shrink*/0);
+ if (p) {
+ MtxMustLock(&xi->xi_mtx);
+ xi->xi_file = p;
+ xi->xi_nfile = idx + 1;
+ } else {
+ err = -ENOMEM;
+ if (file)
+ fput(file);
+ goto out;
+ }
+ }
+ xi->xi_file[idx] = file;
+
+out:
+ return err;
+}
+
+/*
+ * if @xinew->xi is not set, then create new xigen file.
+ */
+struct file *au_xi_new(struct super_block *sb, struct au_xi_new *xinew)
+{
+ struct file *file;
+ int err;
+
+ SiMustAnyLock(sb);
+
+ file = au_xino_create2(sb, xinew->base, xinew->copy_src);
+ if (IS_ERR(file)) {
+ err = PTR_ERR(file);
+ pr_err("%s[%d], err %d\n",
+ xinew->xi ? "xino" : "xigen",
+ xinew->idx, err);
+ goto out;
+ }
+
+ if (xinew->xi)
+ err = au_xino_file_set(xinew->xi, xinew->idx, file);
+ else {
+ BUG();
+ /* todo: make xigen file an array */
+ /* err = au_xigen_file_set(sb, xinew->idx, file); */
+ }
+ fput(file);
+ if (unlikely(err))
+ file = ERR_PTR(err);
+
+out:
+ return file;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * truncate xino files
+ */
+static int au_xino_do_trunc(struct super_block *sb, aufs_bindex_t bindex,
+ int idx, struct kstatfs *st)
+{
+ int err;
+ blkcnt_t blocks;
+ struct file *file, *new_xino;
+ struct au_xi_new xinew = {
+ .idx = idx
+ };
+
+ err = 0;
+ xinew.xi = au_sbr(sb, bindex)->br_xino;
+ file = au_xino_file(xinew.xi, idx);
+ if (!file)
+ goto out;
+
+ xinew.base = &file->f_path;
+ err = vfs_statfs(xinew.base, st);
+ if (unlikely(err)) {
+ AuErr1("statfs err %d, ignored\n", err);
+ err = 0;
+ goto out;
+ }
+
+ blocks = file_inode(file)->i_blocks;
+ pr_info("begin truncating xino(b%d-%d), ib%llu, %llu/%llu free blks\n",
+ bindex, idx, (u64)blocks, st->f_bfree, st->f_blocks);
+
+ xinew.copy_src = file;
+ new_xino = au_xi_new(sb, &xinew);
+ if (IS_ERR(new_xino)) {
+ err = PTR_ERR(new_xino);
+ pr_err("xino(b%d-%d), err %d, ignored\n", bindex, idx, err);
+ goto out;
+ }
+
+ err = vfs_statfs(&new_xino->f_path, st);
+ if (!err)
+ pr_info("end truncating xino(b%d-%d), ib%llu, %llu/%llu free blks\n",
+ bindex, idx, (u64)file_inode(new_xino)->i_blocks,
+ st->f_bfree, st->f_blocks);
+ else {
+ AuErr1("statfs err %d, ignored\n", err);
+ err = 0;
+ }
+
+out:
+ return err;
+}
+
+int au_xino_trunc(struct super_block *sb, aufs_bindex_t bindex, int idx_begin)
+{
+ int err, i;
+ unsigned long jiffy;
+ aufs_bindex_t bbot;
+ struct kstatfs *st;
+ struct au_branch *br;
+ struct au_xino *xi;
+
+ err = -ENOMEM;
+ st = kmalloc(sizeof(*st), GFP_NOFS);
+ if (unlikely(!st))
+ goto out;
+
+ err = -EINVAL;
+ bbot = au_sbbot(sb);
+ if (unlikely(bindex < 0 || bbot < bindex))
+ goto out_st;
+
+ err = 0;
+ jiffy = jiffies;
+ br = au_sbr(sb, bindex);
+ xi = br->br_xino;
+ for (i = idx_begin; !err && i < xi->xi_nfile; i++)
+ err = au_xino_do_trunc(sb, bindex, i, st);
+ if (!err)
+ au_sbi(sb)->si_xino_jiffy = jiffy;
+
+out_st:
+ au_kfree_rcu(st);
+out:
+ return err;
+}
+
+struct xino_do_trunc_args {
+ struct super_block *sb;
+ struct au_branch *br;
+ int idx;
+};
+
+static void xino_do_trunc(void *_args)
+{
+ struct xino_do_trunc_args *args = _args;
+ struct super_block *sb;
+ struct au_branch *br;
+ struct inode *dir;
+ int err, idx;
+ aufs_bindex_t bindex;
+
+ err = 0;
+ sb = args->sb;
+ dir = d_inode(sb->s_root);
+ br = args->br;
+ idx = args->idx;
+
+ si_noflush_write_lock(sb);
+ ii_read_lock_parent(dir);
+ bindex = au_br_index(sb, br->br_id);
+ err = au_xino_trunc(sb, bindex, idx);
+ ii_read_unlock(dir);
+ if (unlikely(err))
+ pr_warn("err b%d, (%d)\n", bindex, err);
+ atomic_dec(&br->br_xino->xi_truncating);
+ au_lcnt_dec(&br->br_count);
+ si_write_unlock(sb);
+ au_nwt_done(&au_sbi(sb)->si_nowait);
+ au_kfree_rcu(args);
+}
+
+/*
+ * returns the index in the xi_file array whose corresponding file is necessary
+ * to truncate, or -1 which means no need to truncate.
+ */
+static int xino_trunc_test(struct super_block *sb, struct au_branch *br)
+{
+ int err;
+ unsigned int u;
+ struct kstatfs st;
+ struct au_sbinfo *sbinfo;
+ struct au_xino *xi;
+ struct file *file;
+
+ /* todo: si_xino_expire and the ratio should be customizable */
+ sbinfo = au_sbi(sb);
+ if (time_before(jiffies,
+ sbinfo->si_xino_jiffy + sbinfo->si_xino_expire))
+ return -1;
+
+ /* truncation border */
+ xi = br->br_xino;
+ for (u = 0; u < xi->xi_nfile; u++) {
+ file = au_xino_file(xi, u);
+ if (!file)
+ continue;
+
+ err = vfs_statfs(&file->f_path, &st);
+ if (unlikely(err)) {
+ AuErr1("statfs err %d, ignored\n", err);
+ return -1;
+ }
+ if (div64_u64(st.f_bfree * 100, st.f_blocks)
+ >= AUFS_XINO_DEF_TRUNC)
+ return u;
+ }
+
+ return -1;
+}
+
+static void xino_try_trunc(struct super_block *sb, struct au_branch *br)
+{
+ int idx;
+ struct xino_do_trunc_args *args;
+ int wkq_err;
+
+ idx = xino_trunc_test(sb, br);
+ if (idx < 0)
+ return;
+
+ if (atomic_inc_return(&br->br_xino->xi_truncating) > 1)
+ goto out;
+
+ /* lock and kfree() will be called in trunc_xino() */
+ args = kmalloc(sizeof(*args), GFP_NOFS);
+ if (unlikely(!args)) {
+ AuErr1("no memory\n");
+ goto out;
+ }
+
+ au_lcnt_inc(&br->br_count);
+ args->sb = sb;
+ args->br = br;
+ args->idx = idx;
+ wkq_err = au_wkq_nowait(xino_do_trunc, args, sb, /*flags*/0);
+ if (!wkq_err)
+ return; /* success */
+
+ pr_err("wkq %d\n", wkq_err);
+ au_lcnt_dec(&br->br_count);
+ au_kfree_rcu(args);
+
+out:
+ atomic_dec(&br->br_xino->xi_truncating);
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct au_xi_calc {
+ int idx;
+ loff_t pos;
+};
+
+static void au_xi_calc(struct super_block *sb, ino_t h_ino,
+ struct au_xi_calc *calc)
+{
+ loff_t maxent;
+
+ maxent = au_xi_maxent(sb);
+ calc->idx = div64_u64_rem(h_ino, maxent, &calc->pos);
+ calc->pos *= sizeof(ino_t);
+}
+
+static int au_xino_do_new_async(struct super_block *sb, struct au_branch *br,
+ struct au_xi_calc *calc)
+{
+ int err;
+ struct file *file;
+ struct au_xino *xi = br->br_xino;
+ struct au_xi_new xinew = {
+ .xi = xi
+ };
+
+ SiMustAnyLock(sb);
+
+ err = 0;
+ if (!xi)
+ goto out;
+
+ mutex_lock(&xi->xi_mtx);
+ file = au_xino_file(xi, calc->idx);
+ if (file)
+ goto out_mtx;
+
+ file = au_xino_file(xi, /*idx*/-1);
+ AuDebugOn(!file);
+ xinew.idx = calc->idx;
+ xinew.base = &file->f_path;
+ /* xinew.copy_src = NULL; */
+ file = au_xi_new(sb, &xinew);
+ if (IS_ERR(file))
+ err = PTR_ERR(file);
+
+out_mtx:
+ mutex_unlock(&xi->xi_mtx);
+out:
+ return err;
+}
+
+struct au_xino_do_new_async_args {
+ struct super_block *sb;
+ struct au_branch *br;
+ struct au_xi_calc calc;
+ ino_t ino;
+};
+
+struct au_xi_writing {
+ struct hlist_bl_node node;
+ ino_t h_ino, ino;
+};
+
+static int au_xino_do_write(vfs_writef_t write, struct file *file,
+ struct au_xi_calc *calc, ino_t ino);
+
+static void au_xino_call_do_new_async(void *args)
+{
+ struct au_xino_do_new_async_args *a = args;
+ struct au_branch *br;
+ struct super_block *sb;
+ struct au_sbinfo *sbi;
+ struct inode *root;
+ struct file *file;
+ struct au_xi_writing *del, *p;
+ struct hlist_bl_head *hbl;
+ struct hlist_bl_node *pos;
+ int err;
+
+ br = a->br;
+ sb = a->sb;
+ sbi = au_sbi(sb);
+ si_noflush_read_lock(sb);
+ root = d_inode(sb->s_root);
+ ii_read_lock_child(root);
+ err = au_xino_do_new_async(sb, br, &a->calc);
+ if (unlikely(err)) {
+ AuIOErr("err %d\n", err);
+ goto out;
+ }
+
+ file = au_xino_file(br->br_xino, a->calc.idx);
+ AuDebugOn(!file);
+ err = au_xino_do_write(sbi->si_xwrite, file, &a->calc, a->ino);
+ if (unlikely(err)) {
+ AuIOErr("err %d\n", err);
+ goto out;
+ }
+
+ del = NULL;
+ hbl = &br->br_xino->xi_writing;
+ hlist_bl_lock(hbl);
+ au_hbl_for_each(pos, hbl) {
+ p = container_of(pos, struct au_xi_writing, node);
+ if (p->ino == a->ino) {
+ del = p;
+ hlist_bl_del(&p->node);
+ break;
+ }
+ }
+ hlist_bl_unlock(hbl);
+ au_kfree_rcu(del);
+
+out:
+ au_lcnt_dec(&br->br_count);
+ ii_read_unlock(root);
+ si_read_unlock(sb);
+ au_nwt_done(&sbi->si_nowait);
+ au_kfree_rcu(a);
+}
+
+/*
+ * create a new xino file asynchronously
+ */
+static int au_xino_new_async(struct super_block *sb, struct au_branch *br,
+ struct au_xi_calc *calc, ino_t ino)
+{
+ int err;
+ struct au_xino_do_new_async_args *arg;
+
+ err = -ENOMEM;
+ arg = kmalloc(sizeof(*arg), GFP_NOFS);
+ if (unlikely(!arg))
+ goto out;
+
+ arg->sb = sb;
+ arg->br = br;
+ arg->calc = *calc;
+ arg->ino = ino;
+ au_lcnt_inc(&br->br_count);
+ err = au_wkq_nowait(au_xino_call_do_new_async, arg, sb, AuWkq_NEST);
+ if (unlikely(err)) {
+ pr_err("wkq %d\n", err);
+ au_lcnt_dec(&br->br_count);
+ au_kfree_rcu(arg);
+ }
+
+out:
+ return err;
+}
+
+/*
+ * read @ino from xinofile for the specified branch{@sb, @bindex}
+ * at the position of @h_ino.
+ */
+int au_xino_read(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+ ino_t *ino)
+{
+ int err;
+ ssize_t sz;
+ struct au_xi_calc calc;
+ struct au_sbinfo *sbinfo;
+ struct file *file;
+ struct au_xino *xi;
+ struct hlist_bl_head *hbl;
+ struct hlist_bl_node *pos;
+ struct au_xi_writing *p;
+
+ *ino = 0;
+ if (!au_opt_test(au_mntflags(sb), XINO))
+ return 0; /* no xino */
+
+ err = 0;
+ au_xi_calc(sb, h_ino, &calc);
+ xi = au_sbr(sb, bindex)->br_xino;
+ file = au_xino_file(xi, calc.idx);
+ if (!file) {
+ hbl = &xi->xi_writing;
+ hlist_bl_lock(hbl);
+ au_hbl_for_each(pos, hbl) {
+ p = container_of(pos, struct au_xi_writing, node);
+ if (p->h_ino == h_ino) {
+ AuDbg("hi%llu, i%llu, found\n",
+ (u64)p->h_ino, (u64)p->ino);
+ *ino = p->ino;
+ break;
+ }
+ }
+ hlist_bl_unlock(hbl);
+ return 0;
+ } else if (vfsub_f_size_read(file) < calc.pos + sizeof(*ino))
+ return 0; /* no xino */
+
+ sbinfo = au_sbi(sb);
+ sz = xino_fread(sbinfo->si_xread, file, ino, sizeof(*ino), &calc.pos);
+ if (sz == sizeof(*ino))
+ return 0; /* success */
+
+ err = sz;
+ if (unlikely(sz >= 0)) {
+ err = -EIO;
+ AuIOErr("xino read error (%zd)\n", sz);
+ }
+ return err;
+}
+
+static int au_xino_do_write(vfs_writef_t write, struct file *file,
+ struct au_xi_calc *calc, ino_t ino)
+{
+ ssize_t sz;
+
+ sz = xino_fwrite(write, file, &ino, sizeof(ino), &calc->pos);
+ if (sz == sizeof(ino))
+ return 0; /* success */
+
+ AuIOErr("write failed (%zd)\n", sz);
+ return -EIO;
+}
+
+/*
+ * write @ino to the xinofile for the specified branch{@sb, @bindex}
+ * at the position of @h_ino.
+ * even if @ino is zero, it is written to the xinofile and means no entry.
+ * if the size of the xino file on a specific filesystem exceeds the watermark,
+ * try truncating it.
+ */
+int au_xino_write(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+ ino_t ino)
+{
+ int err;
+ unsigned int mnt_flags;
+ struct au_xi_calc calc;
+ struct file *file;
+ struct au_branch *br;
+ struct au_xino *xi;
+ struct au_xi_writing *p;
+
+ SiMustAnyLock(sb);
+
+ mnt_flags = au_mntflags(sb);
+ if (!au_opt_test(mnt_flags, XINO))
+ return 0;
+
+ au_xi_calc(sb, h_ino, &calc);
+ br = au_sbr(sb, bindex);
+ xi = br->br_xino;
+ file = au_xino_file(xi, calc.idx);
+ if (!file) {
+ /* store the inum pair into the list */
+ p = kmalloc(sizeof(*p), GFP_NOFS | __GFP_NOFAIL);
+ p->h_ino = h_ino;
+ p->ino = ino;
+ au_hbl_add(&p->node, &xi->xi_writing);
+
+ /* create and write a new xino file asynchronously */
+ err = au_xino_new_async(sb, br, &calc, ino);
+ if (!err)
+ return 0; /* success */
+ goto out;
+ }
+
+ err = au_xino_do_write(au_sbi(sb)->si_xwrite, file, &calc, ino);
+ if (!err) {
+ br = au_sbr(sb, bindex);
+ if (au_opt_test(mnt_flags, TRUNC_XINO)
+ && au_test_fs_trunc_xino(au_br_sb(br)))
+ xino_try_trunc(sb, br);
+ return 0; /* success */
+ }
+
+out:
+ AuIOErr("write failed (%d)\n", err);
+ return -EIO;
+}
+
+static ssize_t xino_fread_wkq(vfs_readf_t func, struct file *file, void *buf,
+ size_t size, loff_t *pos);
+
+/* todo: unnecessary to support mmap_sem since kernel-space? */
+ssize_t xino_fread(vfs_readf_t func, struct file *file, void *kbuf, size_t size,
+ loff_t *pos)
+{
+ ssize_t err;
+ mm_segment_t oldfs;
+ union {
+ void *k;
+ char __user *u;
+ } buf;
+ int i;
+ const int prevent_endless = 10;
+
+ i = 0;
+ buf.k = kbuf;
+ oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ do {
+ err = func(file, buf.u, size, pos);
+ if (err == -EINTR
+ && !au_wkq_test()
+ && fatal_signal_pending(current)) {
+ set_fs(oldfs);
+ err = xino_fread_wkq(func, file, kbuf, size, pos);
+ BUG_ON(err == -EINTR);
+ oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ }
+ } while (i++ < prevent_endless
+ && (err == -EAGAIN || err == -EINTR));
+ set_fs(oldfs);
+
+#if 0 /* reserved for future use */
+ if (err > 0)
+ fsnotify_access(file->f_path.dentry);
+#endif
+
+ return err;
+}
+
+struct xino_fread_args {
+ ssize_t *errp;
+ vfs_readf_t func;
+ struct file *file;
+ void *buf;
+ size_t size;
+ loff_t *pos;
+};
+
+static void call_xino_fread(void *args)
+{
+ struct xino_fread_args *a = args;
+ *a->errp = xino_fread(a->func, a->file, a->buf, a->size, a->pos);
+}
+
+static ssize_t xino_fread_wkq(vfs_readf_t func, struct file *file, void *buf,
+ size_t size, loff_t *pos)
+{
+ ssize_t err;
+ int wkq_err;
+ struct xino_fread_args args = {
+ .errp = &err,
+ .func = func,
+ .file = file,
+ .buf = buf,
+ .size = size,
+ .pos = pos
+ };
+
+ wkq_err = au_wkq_wait(call_xino_fread, &args);
+ if (unlikely(wkq_err))
+ err = wkq_err;
+
+ return err;
+}
+
+static ssize_t xino_fwrite_wkq(vfs_writef_t func, struct file *file, void *buf,
+ size_t size, loff_t *pos);
+
+static ssize_t do_xino_fwrite(vfs_writef_t func, struct file *file, void *kbuf,
+ size_t size, loff_t *pos)
+{
+ ssize_t err;
+ mm_segment_t oldfs;
+ union {
+ void *k;
+ const char __user *u;
+ } buf;
+ int i;
+ const int prevent_endless = 10;
+
+ i = 0;
+ buf.k = kbuf;
+ oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ do {
+ err = func(file, buf.u, size, pos);
+ if (err == -EINTR
+ && !au_wkq_test()
+ && fatal_signal_pending(current)) {
+ set_fs(oldfs);
+ err = xino_fwrite_wkq(func, file, kbuf, size, pos);
+ BUG_ON(err == -EINTR);
+ oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ }
+ } while (i++ < prevent_endless
+ && (err == -EAGAIN || err == -EINTR));
+ set_fs(oldfs);
+
+#if 0 /* reserved for future use */
+ if (err > 0)
+ fsnotify_modify(file->f_path.dentry);
+#endif
+
+ return err;
+}
+
+struct do_xino_fwrite_args {
+ ssize_t *errp;
+ vfs_writef_t func;
+ struct file *file;
+ void *buf;
+ size_t size;
+ loff_t *pos;
+};
+
+static void call_do_xino_fwrite(void *args)
+{
+ struct do_xino_fwrite_args *a = args;
+ *a->errp = do_xino_fwrite(a->func, a->file, a->buf, a->size, a->pos);
+}
+
+static ssize_t xino_fwrite_wkq(vfs_writef_t func, struct file *file, void *buf,
+ size_t size, loff_t *pos)
+{
+ ssize_t err;
+ int wkq_err;
+ struct do_xino_fwrite_args args = {
+ .errp = &err,
+ .func = func,
+ .file = file,
+ .buf = buf,
+ .size = size,
+ .pos = pos
+ };
+
+ /*
+ * it breaks RLIMIT_FSIZE and normal user's limit,
+ * users should care about quota and real 'filesystem full.'
+ */
+ wkq_err = au_wkq_wait(call_do_xino_fwrite, &args);
+ if (unlikely(wkq_err))
+ err = wkq_err;
+
+ return err;
+}
+
+ssize_t xino_fwrite(vfs_writef_t func, struct file *file, void *buf,
+ size_t size, loff_t *pos)
+{
+ ssize_t err;
+
+ if (rlimit(RLIMIT_FSIZE) == RLIM_INFINITY) {
+ lockdep_off();
+ err = do_xino_fwrite(func, file, buf, size, pos);
+ lockdep_on();
+ } else {
+ lockdep_off();
+ err = xino_fwrite_wkq(func, file, buf, size, pos);
+ lockdep_on();
+ }
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * inode number bitmap
+ */
+static const int page_bits = (int)PAGE_SIZE * BITS_PER_BYTE;
+static ino_t xib_calc_ino(unsigned long pindex, int bit)
+{
+ ino_t ino;
+
+ AuDebugOn(bit < 0 || page_bits <= bit);
+ ino = AUFS_FIRST_INO + pindex * page_bits + bit;
+ return ino;
+}
+
+static void xib_calc_bit(ino_t ino, unsigned long *pindex, int *bit)
+{
+ AuDebugOn(ino < AUFS_FIRST_INO);
+ ino -= AUFS_FIRST_INO;
+ *pindex = ino / page_bits;
+ *bit = ino % page_bits;
+}
+
+static int xib_pindex(struct super_block *sb, unsigned long pindex)
+{
+ int err;
+ loff_t pos;
+ ssize_t sz;
+ struct au_sbinfo *sbinfo;
+ struct file *xib;
+ unsigned long *p;
+
+ sbinfo = au_sbi(sb);
+ MtxMustLock(&sbinfo->si_xib_mtx);
+ AuDebugOn(pindex > ULONG_MAX / PAGE_SIZE
+ || !au_opt_test(sbinfo->si_mntflags, XINO));
+
+ if (pindex == sbinfo->si_xib_last_pindex)
+ return 0;
+
+ xib = sbinfo->si_xib;
+ p = sbinfo->si_xib_buf;
+ pos = sbinfo->si_xib_last_pindex;
+ pos *= PAGE_SIZE;
+ sz = xino_fwrite(sbinfo->si_xwrite, xib, p, PAGE_SIZE, &pos);
+ if (unlikely(sz != PAGE_SIZE))
+ goto out;
+
+ pos = pindex;
+ pos *= PAGE_SIZE;
+ if (vfsub_f_size_read(xib) >= pos + PAGE_SIZE)
+ sz = xino_fread(sbinfo->si_xread, xib, p, PAGE_SIZE, &pos);
+ else {
+ memset(p, 0, PAGE_SIZE);
+ sz = xino_fwrite(sbinfo->si_xwrite, xib, p, PAGE_SIZE, &pos);
+ }
+ if (sz == PAGE_SIZE) {
+ sbinfo->si_xib_last_pindex = pindex;
+ return 0; /* success */
+ }
+
+out:
+ AuIOErr1("write failed (%zd)\n", sz);
+ err = sz;
+ if (sz >= 0)
+ err = -EIO;
+ return err;
+}
+
+static void au_xib_clear_bit(struct inode *inode)
+{
+ int err, bit;
+ unsigned long pindex;
+ struct super_block *sb;
+ struct au_sbinfo *sbinfo;
+
+ AuDebugOn(inode->i_nlink);
+
+ sb = inode->i_sb;
+ xib_calc_bit(inode->i_ino, &pindex, &bit);
+ AuDebugOn(page_bits <= bit);
+ sbinfo = au_sbi(sb);
+ mutex_lock(&sbinfo->si_xib_mtx);
+ err = xib_pindex(sb, pindex);
+ if (!err) {
+ clear_bit(bit, sbinfo->si_xib_buf);
+ sbinfo->si_xib_next_bit = bit;
+ }
+ mutex_unlock(&sbinfo->si_xib_mtx);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * truncate a xino bitmap file
+ */
+
+/* todo: slow */
+static int do_xib_restore(struct super_block *sb, struct file *file, void *page)
+{
+ int err, bit;
+ ssize_t sz;
+ unsigned long pindex;
+ loff_t pos, pend;
+ struct au_sbinfo *sbinfo;
+ vfs_readf_t func;
+ ino_t *ino;
+ unsigned long *p;
+
+ err = 0;
+ sbinfo = au_sbi(sb);
+ MtxMustLock(&sbinfo->si_xib_mtx);
+ p = sbinfo->si_xib_buf;
+ func = sbinfo->si_xread;
+ pend = vfsub_f_size_read(file);
+ pos = 0;
+ while (pos < pend) {
+ sz = xino_fread(func, file, page, PAGE_SIZE, &pos);
+ err = sz;
+ if (unlikely(sz <= 0))
+ goto out;
+
+ err = 0;
+ for (ino = page; sz > 0; ino++, sz -= sizeof(ino)) {
+ if (unlikely(*ino < AUFS_FIRST_INO))
+ continue;
+
+ xib_calc_bit(*ino, &pindex, &bit);
+ AuDebugOn(page_bits <= bit);
+ err = xib_pindex(sb, pindex);
+ if (!err)
+ set_bit(bit, p);
+ else
+ goto out;
+ }
+ }
+
+out:
+ return err;
+}
+
+static int xib_restore(struct super_block *sb)
+{
+ int err, i;
+ unsigned int nfile;
+ aufs_bindex_t bindex, bbot;
+ void *page;
+ struct au_branch *br;
+ struct au_xino *xi;
+ struct file *file;
+
+ err = -ENOMEM;
+ page = (void *)__get_free_page(GFP_NOFS);
+ if (unlikely(!page))
+ goto out;
+
+ err = 0;
+ bbot = au_sbbot(sb);
+ for (bindex = 0; !err && bindex <= bbot; bindex++)
+ if (!bindex || is_sb_shared(sb, bindex, bindex - 1) < 0) {
+ br = au_sbr(sb, bindex);
+ xi = br->br_xino;
+ nfile = xi->xi_nfile;
+ for (i = 0; i < nfile; i++) {
+ file = au_xino_file(xi, i);
+ if (file)
+ err = do_xib_restore(sb, file, page);
+ }
+ } else
+ AuDbg("skip shared b%d\n", bindex);
+ free_page((unsigned long)page);
+
+out:
+ return err;
+}
+
+int au_xib_trunc(struct super_block *sb)
+{
+ int err;
+ ssize_t sz;
+ loff_t pos;
+ struct au_sbinfo *sbinfo;
+ unsigned long *p;
+ struct file *file;
+
+ SiMustWriteLock(sb);
+
+ err = 0;
+ sbinfo = au_sbi(sb);
+ if (!au_opt_test(sbinfo->si_mntflags, XINO))
+ goto out;
+
+ file = sbinfo->si_xib;
+ if (vfsub_f_size_read(file) <= PAGE_SIZE)
+ goto out;
+
+ file = au_xino_create2(sb, &sbinfo->si_xib->f_path, NULL);
+ err = PTR_ERR(file);
+ if (IS_ERR(file))
+ goto out;
+ fput(sbinfo->si_xib);
+ sbinfo->si_xib = file;
+
+ p = sbinfo->si_xib_buf;
+ memset(p, 0, PAGE_SIZE);
+ pos = 0;
+ sz = xino_fwrite(sbinfo->si_xwrite, sbinfo->si_xib, p, PAGE_SIZE, &pos);
+ if (unlikely(sz != PAGE_SIZE)) {
+ err = sz;
+ AuIOErr("err %d\n", err);
+ if (sz >= 0)
+ err = -EIO;
+ goto out;
+ }
+
+ mutex_lock(&sbinfo->si_xib_mtx);
+ /* mnt_want_write() is unnecessary here */
+ err = xib_restore(sb);
+ mutex_unlock(&sbinfo->si_xib_mtx);
+
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct au_xino *au_xino_alloc(unsigned int nfile)
+{
+ struct au_xino *xi;
+
+ xi = kzalloc(sizeof(*xi), GFP_NOFS);
+ if (unlikely(!xi))
+ goto out;
+ xi->xi_nfile = nfile;
+ xi->xi_file = kcalloc(nfile, sizeof(*xi->xi_file), GFP_NOFS);
+ if (unlikely(!xi->xi_file))
+ goto out_free;
+
+ xi->xi_nondir.total = 8; /* initial size */
+ xi->xi_nondir.array = kcalloc(xi->xi_nondir.total, sizeof(ino_t),
+ GFP_NOFS);
+ if (unlikely(!xi->xi_nondir.array))
+ goto out_file;
+
+ spin_lock_init(&xi->xi_nondir.spin);
+ init_waitqueue_head(&xi->xi_nondir.wqh);
+ mutex_init(&xi->xi_mtx);
+ INIT_HLIST_BL_HEAD(&xi->xi_writing);
+ atomic_set(&xi->xi_truncating, 0);
+ kref_init(&xi->xi_kref);
+ goto out; /* success */
+
+out_file:
+ au_kfree_try_rcu(xi->xi_file);
+out_free:
+ au_kfree_rcu(xi);
+ xi = NULL;
+out:
+ return xi;
+}
+
+static int au_xino_init(struct au_branch *br, int idx, struct file *file)
+{
+ int err;
+ struct au_xino *xi;
+
+ err = 0;
+ xi = au_xino_alloc(idx + 1);
+ if (unlikely(!xi)) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ if (file)
+ get_file(file);
+ xi->xi_file[idx] = file;
+ AuDebugOn(br->br_xino);
+ br->br_xino = xi;
+
+out:
+ return err;
+}
+
+static void au_xino_release(struct kref *kref)
+{
+ struct au_xino *xi;
+ int i;
+ unsigned long ul;
+ struct hlist_bl_head *hbl;
+ struct hlist_bl_node *pos, *n;
+ struct au_xi_writing *p;
+
+ xi = container_of(kref, struct au_xino, xi_kref);
+ for (i = 0; i < xi->xi_nfile; i++)
+ if (xi->xi_file[i])
+ fput(xi->xi_file[i]);
+ for (i = xi->xi_nondir.total - 1; i >= 0; i--)
+ AuDebugOn(xi->xi_nondir.array[i]);
+ mutex_destroy(&xi->xi_mtx);
+ hbl = &xi->xi_writing;
+ ul = au_hbl_count(hbl);
+ if (unlikely(ul)) {
+ pr_warn("xi_writing %lu\n", ul);
+ hlist_bl_lock(hbl);
+ hlist_bl_for_each_entry_safe (p, pos, n, hbl, node) {
+ hlist_bl_del(&p->node);
+ au_kfree_rcu(p);
+ }
+ hlist_bl_unlock(hbl);
+ }
+ au_kfree_try_rcu(xi->xi_file);
+ au_kfree_try_rcu(xi->xi_nondir.array);
+ au_kfree_rcu(xi);
+}
+
+int au_xino_put(struct au_branch *br)
+{
+ int ret;
+ struct au_xino *xi;
+
+ ret = 0;
+ xi = br->br_xino;
+ if (xi) {
+ br->br_xino = NULL;
+ ret = kref_put(&xi->xi_kref, au_xino_release);
+ }
+
+ return ret;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * xino mount option handlers
+ */
+
+/* xino bitmap */
+static void xino_clear_xib(struct super_block *sb)
+{
+ struct au_sbinfo *sbinfo;
+
+ SiMustWriteLock(sb);
+
+ sbinfo = au_sbi(sb);
+ /* unnecessary to clear sbinfo->si_xread and ->si_xwrite */
+ if (sbinfo->si_xib)
+ fput(sbinfo->si_xib);
+ sbinfo->si_xib = NULL;
+ if (sbinfo->si_xib_buf)
+ free_page((unsigned long)sbinfo->si_xib_buf);
+ sbinfo->si_xib_buf = NULL;
+}
+
+static int au_xino_set_xib(struct super_block *sb, struct path *path)
+{
+ int err;
+ loff_t pos;
+ struct au_sbinfo *sbinfo;
+ struct file *file;
+ struct super_block *xi_sb;
+
+ SiMustWriteLock(sb);
+
+ sbinfo = au_sbi(sb);
+ file = au_xino_create2(sb, path, sbinfo->si_xib);
+ err = PTR_ERR(file);
+ if (IS_ERR(file))
+ goto out;
+ if (sbinfo->si_xib)
+ fput(sbinfo->si_xib);
+ sbinfo->si_xib = file;
+ sbinfo->si_xread = vfs_readf(file);
+ sbinfo->si_xwrite = vfs_writef(file);
+ xi_sb = file_inode(file)->i_sb;
+ sbinfo->si_ximaxent = xi_sb->s_maxbytes;
+ if (unlikely(sbinfo->si_ximaxent < PAGE_SIZE)) {
+ err = -EIO;
+ pr_err("s_maxbytes(%llu) on %s is too small\n",
+ (u64)sbinfo->si_ximaxent, au_sbtype(xi_sb));
+ goto out_unset;
+ }
+ sbinfo->si_ximaxent /= sizeof(ino_t);
+
+ err = -ENOMEM;
+ if (!sbinfo->si_xib_buf)
+ sbinfo->si_xib_buf = (void *)get_zeroed_page(GFP_NOFS);
+ if (unlikely(!sbinfo->si_xib_buf))
+ goto out_unset;
+
+ sbinfo->si_xib_last_pindex = 0;
+ sbinfo->si_xib_next_bit = 0;
+ if (vfsub_f_size_read(file) < PAGE_SIZE) {
+ pos = 0;
+ err = xino_fwrite(sbinfo->si_xwrite, file, sbinfo->si_xib_buf,
+ PAGE_SIZE, &pos);
+ if (unlikely(err != PAGE_SIZE))
+ goto out_free;
+ }
+ err = 0;
+ goto out; /* success */
+
+out_free:
+ if (sbinfo->si_xib_buf)
+ free_page((unsigned long)sbinfo->si_xib_buf);
+ sbinfo->si_xib_buf = NULL;
+ if (err >= 0)
+ err = -EIO;
+out_unset:
+ fput(sbinfo->si_xib);
+ sbinfo->si_xib = NULL;
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+/* xino for each branch */
+static void xino_clear_br(struct super_block *sb)
+{
+ aufs_bindex_t bindex, bbot;
+ struct au_branch *br;
+
+ bbot = au_sbbot(sb);
+ for (bindex = 0; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ AuDebugOn(!br);
+ au_xino_put(br);
+ }
+}
+
+static void au_xino_set_br_shared(struct super_block *sb, struct au_branch *br,
+ aufs_bindex_t bshared)
+{
+ struct au_branch *brshared;
+
+ brshared = au_sbr(sb, bshared);
+ AuDebugOn(!brshared->br_xino);
+ AuDebugOn(!brshared->br_xino->xi_file);
+ if (br->br_xino != brshared->br_xino) {
+ au_xino_get(brshared);
+ au_xino_put(br);
+ br->br_xino = brshared->br_xino;
+ }
+}
+
+struct au_xino_do_set_br {
+ vfs_writef_t writef;
+ struct au_branch *br;
+ ino_t h_ino;
+ aufs_bindex_t bshared;
+};
+
+static int au_xino_do_set_br(struct super_block *sb, struct path *path,
+ struct au_xino_do_set_br *args)
+{
+ int err;
+ struct au_xi_calc calc;
+ struct file *file;
+ struct au_branch *br;
+ struct au_xi_new xinew = {
+ .base = path
+ };
+
+ br = args->br;
+ xinew.xi = br->br_xino;
+ au_xi_calc(sb, args->h_ino, &calc);
+ xinew.copy_src = au_xino_file(xinew.xi, calc.idx);
+ if (args->bshared >= 0)
+ /* shared xino */
+ au_xino_set_br_shared(sb, br, args->bshared);
+ else if (!xinew.xi) {
+ /* new xino */
+ err = au_xino_init(br, calc.idx, xinew.copy_src);
+ if (unlikely(err))
+ goto out;
+ }
+
+ /* force re-creating */
+ xinew.xi = br->br_xino;
+ xinew.idx = calc.idx;
+ mutex_lock(&xinew.xi->xi_mtx);
+ file = au_xi_new(sb, &xinew);
+ mutex_unlock(&xinew.xi->xi_mtx);
+ err = PTR_ERR(file);
+ if (IS_ERR(file))
+ goto out;
+ AuDebugOn(!file);
+
+ err = au_xino_do_write(args->writef, file, &calc, AUFS_ROOT_INO);
+ if (unlikely(err))
+ au_xino_put(br);
+
+out:
+ AuTraceErr(err);
+ return err;
+}
+
+static int au_xino_set_br(struct super_block *sb, struct path *path)
+{
+ int err;
+ aufs_bindex_t bindex, bbot;
+ struct au_xino_do_set_br args;
+ struct inode *inode;
+
+ SiMustWriteLock(sb);
+
+ bbot = au_sbbot(sb);
+ inode = d_inode(sb->s_root);
+ args.writef = au_sbi(sb)->si_xwrite;
+ for (bindex = 0; bindex <= bbot; bindex++) {
+ args.h_ino = au_h_iptr(inode, bindex)->i_ino;
+ args.br = au_sbr(sb, bindex);
+ args.bshared = is_sb_shared(sb, bindex, bindex - 1);
+ err = au_xino_do_set_br(sb, path, &args);
+ if (unlikely(err))
+ break;
+ }
+
+ AuTraceErr(err);
+ return err;
+}
+
+void au_xino_clr(struct super_block *sb)
+{
+ struct au_sbinfo *sbinfo;
+
+ au_xigen_clr(sb);
+ xino_clear_xib(sb);
+ xino_clear_br(sb);
+ dbgaufs_brs_del(sb, 0);
+ sbinfo = au_sbi(sb);
+ /* lvalue, do not call au_mntflags() */
+ au_opt_clr(sbinfo->si_mntflags, XINO);
+}
+
+int au_xino_set(struct super_block *sb, struct au_opt_xino *xiopt, int remount)
+{
+ int err, skip;
+ struct dentry *dentry, *parent, *cur_dentry, *cur_parent;
+ struct qstr *dname, *cur_name;
+ struct file *cur_xino;
+ struct au_sbinfo *sbinfo;
+ struct path *path, *cur_path;
+
+ SiMustWriteLock(sb);
+
+ err = 0;
+ sbinfo = au_sbi(sb);
+ path = &xiopt->file->f_path;
+ dentry = path->dentry;
+ parent = dget_parent(dentry);
+ if (remount) {
+ skip = 0;
+ cur_xino = sbinfo->si_xib;
+ if (cur_xino) {
+ cur_path = &cur_xino->f_path;
+ cur_dentry = cur_path->dentry;
+ cur_parent = dget_parent(cur_dentry);
+ cur_name = &cur_dentry->d_name;
+ dname = &dentry->d_name;
+ skip = (cur_parent == parent
+ && au_qstreq(dname, cur_name));
+ dput(cur_parent);
+ }
+ if (skip)
+ goto out;
+ }
+
+ au_opt_set(sbinfo->si_mntflags, XINO);
+ err = au_xino_set_xib(sb, path);
+ /* si_x{read,write} are set */
+ if (!err)
+ err = au_xigen_set(sb, path);
+ if (!err)
+ err = au_xino_set_br(sb, path);
+ if (!err) {
+ dbgaufs_brs_add(sb, 0, /*topdown*/1);
+ goto out; /* success */
+ }
+
+ /* reset all */
+ AuIOErr("failed setting xino(%d).\n", err);
+ au_xino_clr(sb);
+
+out:
+ dput(parent);
+ return err;
+}
+
+/*
+ * create a xinofile at the default place/path.
+ */
+struct file *au_xino_def(struct super_block *sb)
+{
+ struct file *file;
+ char *page, *p;
+ struct au_branch *br;
+ struct super_block *h_sb;
+ struct path path;
+ aufs_bindex_t bbot, bindex, bwr;
+
+ br = NULL;
+ bbot = au_sbbot(sb);
+ bwr = -1;
+ for (bindex = 0; bindex <= bbot; bindex++) {
+ br = au_sbr(sb, bindex);
+ if (au_br_writable(br->br_perm)
+ && !au_test_fs_bad_xino(au_br_sb(br))) {
+ bwr = bindex;
+ break;
+ }
+ }
+
+ if (bwr >= 0) {
+ file = ERR_PTR(-ENOMEM);
+ page = (void *)__get_free_page(GFP_NOFS);
+ if (unlikely(!page))
+ goto out;
+ path.mnt = au_br_mnt(br);
+ path.dentry = au_h_dptr(sb->s_root, bwr);
+ p = d_path(&path, page, PATH_MAX - sizeof(AUFS_XINO_FNAME));
+ file = (void *)p;
+ if (!IS_ERR(p)) {
+ strcat(p, "/" AUFS_XINO_FNAME);
+ AuDbg("%s\n", p);
+ file = au_xino_create(sb, p, /*silent*/0, /*wbrtop*/1);
+ }
+ free_page((unsigned long)page);
+ } else {
+ file = au_xino_create(sb, AUFS_XINO_DEFPATH, /*silent*/0,
+ /*wbrtop*/0);
+ if (IS_ERR(file))
+ goto out;
+ h_sb = file->f_path.dentry->d_sb;
+ if (unlikely(au_test_fs_bad_xino(h_sb))) {
+ pr_err("xino doesn't support %s(%s)\n",
+ AUFS_XINO_DEFPATH, au_sbtype(h_sb));
+ fput(file);
+ file = ERR_PTR(-EINVAL);
+ }
+ }
+
+out:
+ return file;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * initialize the xinofile for the specified branch @br
+ * at the place/path where @base_file indicates.
+ * test whether another branch is on the same filesystem or not,
+ * if found then share the xinofile with another branch.
+ */
+int au_xino_init_br(struct super_block *sb, struct au_branch *br, ino_t h_ino,
+ struct path *base)
+{
+ int err;
+ struct au_xino_do_set_br args = {
+ .h_ino = h_ino,
+ .br = br
+ };
+
+ args.writef = au_sbi(sb)->si_xwrite;
+ args.bshared = sbr_find_shared(sb, /*btop*/0, au_sbbot(sb),
+ au_br_sb(br));
+ err = au_xino_do_set_br(sb, base, &args);
+ if (unlikely(err))
+ au_xino_put(br);
+
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * get an unused inode number from bitmap
+ */
+ino_t au_xino_new_ino(struct super_block *sb)
+{
+ ino_t ino;
+ unsigned long *p, pindex, ul, pend;
+ struct au_sbinfo *sbinfo;
+ struct file *file;
+ int free_bit, err;
+
+ if (!au_opt_test(au_mntflags(sb), XINO))
+ return iunique(sb, AUFS_FIRST_INO);
+
+ sbinfo = au_sbi(sb);
+ mutex_lock(&sbinfo->si_xib_mtx);
+ p = sbinfo->si_xib_buf;
+ free_bit = sbinfo->si_xib_next_bit;
+ if (free_bit < page_bits && !test_bit(free_bit, p))
+ goto out; /* success */
+ free_bit = find_first_zero_bit(p, page_bits);
+ if (free_bit < page_bits)
+ goto out; /* success */
+
+ pindex = sbinfo->si_xib_last_pindex;
+ for (ul = pindex - 1; ul < ULONG_MAX; ul--) {
+ err = xib_pindex(sb, ul);
+ if (unlikely(err))
+ goto out_err;
+ free_bit = find_first_zero_bit(p, page_bits);
+ if (free_bit < page_bits)
+ goto out; /* success */
+ }
+
+ file = sbinfo->si_xib;
+ pend = vfsub_f_size_read(file) / PAGE_SIZE;
+ for (ul = pindex + 1; ul <= pend; ul++) {
+ err = xib_pindex(sb, ul);
+ if (unlikely(err))
+ goto out_err;
+ free_bit = find_first_zero_bit(p, page_bits);
+ if (free_bit < page_bits)
+ goto out; /* success */
+ }
+ BUG();
+
+out:
+ set_bit(free_bit, p);
+ sbinfo->si_xib_next_bit = free_bit + 1;
+ pindex = sbinfo->si_xib_last_pindex;
+ mutex_unlock(&sbinfo->si_xib_mtx);
+ ino = xib_calc_ino(pindex, free_bit);
+ AuDbg("i%lu\n", (unsigned long)ino);
+ return ino;
+out_err:
+ mutex_unlock(&sbinfo->si_xib_mtx);
+ AuDbg("i0\n");
+ return 0;
+}
+
+/* for s_op->delete_inode() */
+void au_xino_delete_inode(struct inode *inode, const int unlinked)
+{
+ int err;
+ unsigned int mnt_flags;
+ aufs_bindex_t bindex, bbot, bi;
+ unsigned char try_trunc;
+ struct au_iinfo *iinfo;
+ struct super_block *sb;
+ struct au_hinode *hi;
+ struct inode *h_inode;
+ struct au_branch *br;
+ vfs_writef_t xwrite;
+ struct au_xi_calc calc;
+ struct file *file;
+
+ AuDebugOn(au_is_bad_inode(inode));
+
+ sb = inode->i_sb;
+ mnt_flags = au_mntflags(sb);
+ if (!au_opt_test(mnt_flags, XINO)
+ || inode->i_ino == AUFS_ROOT_INO)
+ return;
+
+ if (unlinked) {
+ au_xigen_inc(inode);
+ au_xib_clear_bit(inode);
+ }
+
+ iinfo = au_ii(inode);
+ bindex = iinfo->ii_btop;
+ if (bindex < 0)
+ return;
+
+ xwrite = au_sbi(sb)->si_xwrite;
+ try_trunc = !!au_opt_test(mnt_flags, TRUNC_XINO);
+ hi = au_hinode(iinfo, bindex);
+ bbot = iinfo->ii_bbot;
+ for (; bindex <= bbot; bindex++, hi++) {
+ h_inode = hi->hi_inode;
+ if (!h_inode
+ || (!unlinked && h_inode->i_nlink))
+ continue;
+
+ /* inode may not be revalidated */
+ bi = au_br_index(sb, hi->hi_id);
+ if (bi < 0)
+ continue;
+
+ br = au_sbr(sb, bi);
+ au_xi_calc(sb, h_inode->i_ino, &calc);
+ file = au_xino_file(br->br_xino, calc.idx);
+ if (IS_ERR_OR_NULL(file))
+ continue;
+
+ err = au_xino_do_write(xwrite, file, &calc, /*ino*/0);
+ if (!err && try_trunc
+ && au_test_fs_trunc_xino(au_br_sb(br)))
+ xino_try_trunc(sb, br);
+ }
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_xinondir_find(struct au_xino *xi, ino_t h_ino)
+{
+ int found, total, i;
+
+ found = -1;
+ total = xi->xi_nondir.total;
+ for (i = 0; i < total; i++) {
+ if (xi->xi_nondir.array[i] != h_ino)
+ continue;
+ found = i;
+ break;
+ }
+
+ return found;
+}
+
+static int au_xinondir_expand(struct au_xino *xi)
+{
+ int err, sz;
+ ino_t *p;
+
+ BUILD_BUG_ON(KMALLOC_MAX_SIZE > INT_MAX);
+
+ err = -ENOMEM;
+ sz = xi->xi_nondir.total * sizeof(ino_t);
+ if (unlikely(sz > KMALLOC_MAX_SIZE / 2))
+ goto out;
+ p = au_kzrealloc(xi->xi_nondir.array, sz, sz << 1, GFP_ATOMIC,
+ /*may_shrink*/0);
+ if (p) {
+ xi->xi_nondir.array = p;
+ xi->xi_nondir.total <<= 1;
+ AuDbg("xi_nondir.total %d\n", xi->xi_nondir.total);
+ err = 0;
+ }
+
+out:
+ return err;
+}
+
+void au_xinondir_leave(struct super_block *sb, aufs_bindex_t bindex,
+ ino_t h_ino, int idx)
+{
+ struct au_xino *xi;
+
+ AuDebugOn(!au_opt_test(au_mntflags(sb), XINO));
+ xi = au_sbr(sb, bindex)->br_xino;
+ AuDebugOn(idx < 0 || xi->xi_nondir.total <= idx);
+
+ spin_lock(&xi->xi_nondir.spin);
+ AuDebugOn(xi->xi_nondir.array[idx] != h_ino);
+ xi->xi_nondir.array[idx] = 0;
+ spin_unlock(&xi->xi_nondir.spin);
+ wake_up_all(&xi->xi_nondir.wqh);
+}
+
+int au_xinondir_enter(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+ int *idx)
+{
+ int err, found, empty;
+ struct au_xino *xi;
+
+ err = 0;
+ *idx = -1;
+ if (!au_opt_test(au_mntflags(sb), XINO))
+ goto out; /* no xino */
+
+ xi = au_sbr(sb, bindex)->br_xino;
+
+again:
+ spin_lock(&xi->xi_nondir.spin);
+ found = au_xinondir_find(xi, h_ino);
+ if (found == -1) {
+ empty = au_xinondir_find(xi, /*h_ino*/0);
+ if (empty == -1) {
+ empty = xi->xi_nondir.total;
+ err = au_xinondir_expand(xi);
+ if (unlikely(err))
+ goto out_unlock;
+ }
+ xi->xi_nondir.array[empty] = h_ino;
+ *idx = empty;
+ } else {
+ spin_unlock(&xi->xi_nondir.spin);
+ wait_event(xi->xi_nondir.wqh,
+ xi->xi_nondir.array[found] != h_ino);
+ goto again;
+ }
+
+out_unlock:
+ spin_unlock(&xi->xi_nondir.spin);
+out:
+ return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_xino_path(struct seq_file *seq, struct file *file)
+{
+ int err;
+
+ err = au_seq_path(seq, &file->f_path);
+ if (unlikely(err))
+ goto out;
+
+#define Deleted "\\040(deleted)"
+ seq->count -= sizeof(Deleted) - 1;
+ AuDebugOn(memcmp(seq->buf + seq->count, Deleted,
+ sizeof(Deleted) - 1));
+#undef Deleted
+
+out:
+ return err;
+}
diff --git a/fs/dcache.c b/fs/dcache.c
index e88cf0554e..00d7e6a080 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1264,7 +1264,7 @@ enum d_walk_ret {
*
* The @enter() callbacks are called with d_lock held.
*/
-static void d_walk(struct dentry *parent, void *data,
+void d_walk(struct dentry *parent, void *data,
enum d_walk_ret (*enter)(void *, struct dentry *))
{
struct dentry *this_parent;
@@ -1369,6 +1369,7 @@ static void d_walk(struct dentry *parent, void *data,
seq = 1;
goto again;
}
+EXPORT_SYMBOL_GPL(d_walk);
struct check_mount {
struct vfsmount *mnt;
@@ -2914,6 +2915,7 @@ void d_exchange(struct dentry *dentry1, struct dentry *dentry2)
write_sequnlock(&rename_lock);
}
+EXPORT_SYMBOL_GPL(d_exchange);
/**
* d_ancestor - search for an ancestor
diff --git a/fs/exec.c b/fs/exec.c
index f7f6a14085..1ae6ea223e 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -64,6 +64,8 @@
#include <linux/compat.h>
#include <linux/vmalloc.h>
+#include <trace/events/fs.h>
+
#include <linux/uaccess.h>
#include <asm/mmu_context.h>
#include <asm/tlb.h>
@@ -110,6 +112,7 @@ bool path_noexec(const struct path *path)
return (path->mnt->mnt_flags & MNT_NOEXEC) ||
(path->mnt->mnt_sb->s_iflags & SB_I_NOEXEC);
}
+EXPORT_SYMBOL_GPL(path_noexec);
#ifdef CONFIG_USELIB
/*
@@ -869,8 +872,10 @@ static struct file *do_open_execat(int fd, struct filename *name, int flags)
if (err)
goto exit;
- if (name->name[0] != '\0')
+ if (name->name[0] != '\0') {
fsnotify_open(file);
+ trace_open_exec(name->name);
+ }
out:
return file;
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 3d40771e8e..d4ad344638 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -32,7 +32,7 @@
#define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | O_DIRECT | O_NOATIME)
-static int setfl(int fd, struct file * filp, unsigned long arg)
+int setfl(int fd, struct file * filp, unsigned long arg)
{
struct inode * inode = file_inode(filp);
int error = 0;
@@ -63,6 +63,8 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
if (filp->f_op->check_flags)
error = filp->f_op->check_flags(arg);
+ if (!error && filp->f_op->setfl)
+ error = filp->f_op->setfl(filp, arg);
if (error)
return error;
@@ -83,6 +85,7 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
out:
return error;
}
+EXPORT_SYMBOL_GPL(setfl);
static void f_modown(struct file *filp, struct pid *pid, enum pid_type type,
int force)
diff --git a/fs/file_table.c b/fs/file_table.c
index b07b53f24f..34b9bbf4c5 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -162,6 +162,7 @@ struct file *alloc_empty_file(int flags, const struct cred *cred)
}
return ERR_PTR(-ENFILE);
}
+EXPORT_SYMBOL_GPL(alloc_empty_file);
/*
* Variant of alloc_empty_file() that doesn't check and modify nr_files.
@@ -327,6 +328,7 @@ void flush_delayed_fput(void)
{
delayed_fput(NULL);
}
+EXPORT_SYMBOL_GPL(flush_delayed_fput);
static DECLARE_DELAYED_WORK(delayed_fput_work, delayed_fput);
@@ -374,6 +376,7 @@ void __fput_sync(struct file *file)
}
EXPORT_SYMBOL(fput);
+EXPORT_SYMBOL_GPL(__fput_sync);
void __init files_init(void)
{
diff --git a/fs/inode.c b/fs/inode.c
index 0f1e3b563c..8a5c14630f 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1670,7 +1670,7 @@ EXPORT_SYMBOL(generic_update_time);
* This does the actual work of updating an inodes time or version. Must have
* had called mnt_want_write() before calling this.
*/
-static int update_time(struct inode *inode, struct timespec64 *time, int flags)
+int update_time(struct inode *inode, struct timespec64 *time, int flags)
{
int (*update_time)(struct inode *, struct timespec64 *, int);
@@ -1679,6 +1679,7 @@ static int update_time(struct inode *inode, struct timespec64 *time, int flags)
return update_time(inode, time, flags);
}
+EXPORT_SYMBOL_GPL(update_time);
/**
* touch_atime - update the access time
diff --git a/fs/namespace.c b/fs/namespace.c
index d28d30b130..2b64af58b6 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -431,6 +431,7 @@ void __mnt_drop_write(struct vfsmount *mnt)
mnt_dec_writers(real_mount(mnt));
preempt_enable();
}
+EXPORT_SYMBOL_GPL(__mnt_drop_write);
/**
* mnt_drop_write - give up write access to a mount
@@ -776,6 +777,13 @@ static inline int check_mnt(struct mount *mnt)
return mnt->mnt_ns == current->nsproxy->mnt_ns;
}
+/* for aufs, CONFIG_AUFS_BR_FUSE */
+int is_current_mnt_ns(struct vfsmount *mnt)
+{
+ return check_mnt(real_mount(mnt));
+}
+EXPORT_SYMBOL_GPL(is_current_mnt_ns);
+
/*
* vfsmount lock must be held for write
*/
@@ -1894,6 +1902,7 @@ int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg,
}
return 0;
}
+EXPORT_SYMBOL_GPL(iterate_mounts);
static void lock_mnt_tree(struct mount *mnt)
{
diff --git a/fs/notify/group.c b/fs/notify/group.c
index 0391190305..0b9f7f6d83 100644
--- a/fs/notify/group.c
+++ b/fs/notify/group.c
@@ -99,6 +99,7 @@ void fsnotify_get_group(struct fsnotify_group *group)
{
refcount_inc(&group->refcnt);
}
+EXPORT_SYMBOL_GPL(fsnotify_get_group);
/*
* Drop a reference to a group. Free it if it's through.
@@ -108,6 +109,7 @@ void fsnotify_put_group(struct fsnotify_group *group)
if (refcount_dec_and_test(&group->refcnt))
fsnotify_final_destroy_group(group);
}
+EXPORT_SYMBOL_GPL(fsnotify_put_group);
/*
* Create a new fsnotify_group and hold a reference for the group returned.
@@ -137,6 +139,7 @@ struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops)
return group;
}
+EXPORT_SYMBOL_GPL(fsnotify_alloc_group);
int fsnotify_fasync(int fd, struct file *file, int on)
{
diff --git a/fs/notify/mark.c b/fs/notify/mark.c
index 99ddd126f6..2154d69a2c 100644
--- a/fs/notify/mark.c
+++ b/fs/notify/mark.c
@@ -276,6 +276,7 @@ void fsnotify_put_mark(struct fsnotify_mark *mark)
queue_delayed_work(system_unbound_wq, &reaper_work,
FSNOTIFY_REAPER_DELAY);
}
+EXPORT_SYMBOL_GPL(fsnotify_put_mark);
/*
* Get mark reference when we found the mark via lockless traversal of object
@@ -430,6 +431,7 @@ void fsnotify_destroy_mark(struct fsnotify_mark *mark,
mutex_unlock(&group->mark_mutex);
fsnotify_free_mark(mark);
}
+EXPORT_SYMBOL_GPL(fsnotify_destroy_mark);
/*
* Sorting function for lists of fsnotify marks.
@@ -685,6 +687,7 @@ int fsnotify_add_mark(struct fsnotify_mark *mark, fsnotify_connp_t *connp,
mutex_unlock(&group->mark_mutex);
return ret;
}
+EXPORT_SYMBOL_GPL(fsnotify_add_mark);
/*
* Given a list of marks, find the mark associated with given group. If found
@@ -809,6 +812,7 @@ void fsnotify_init_mark(struct fsnotify_mark *mark,
mark->group = group;
WRITE_ONCE(mark->connector, NULL);
}
+EXPORT_SYMBOL_GPL(fsnotify_init_mark);
/*
* Destroy all marks in destroy_list, waits for SRCU period to finish before
diff --git a/fs/open.c b/fs/open.c
index a59abe3c66..33ac1bd965 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -35,6 +35,9 @@
#include "internal.h"
+#define CREATE_TRACE_POINTS
+#include <trace/events/fs.h>
+
int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
struct file *filp)
{
@@ -65,6 +68,7 @@ int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
inode_unlock(dentry->d_inode);
return ret;
}
+EXPORT_SYMBOL_GPL(do_truncate);
long vfs_truncate(const struct path *path, loff_t length)
{
@@ -1093,6 +1097,7 @@ long do_sys_open(int dfd, const char __user *filename, int flags, umode_t mode)
} else {
fsnotify_open(f);
fd_install(fd, f);
+ trace_do_sys_open(tmp->name, flags, mode);
}
}
putname(tmp);
diff --git a/fs/proc/base.c b/fs/proc/base.c
index ebea9501af..dc7edc5f72 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2037,7 +2037,7 @@ static int map_files_get_link(struct dentry *dentry, struct path *path)
rc = -ENOENT;
vma = find_exact_vma(mm, vm_start, vm_end);
if (vma && vma->vm_file) {
- *path = vma->vm_file->f_path;
+ *path = vma_pr_or_file(vma)->f_path;
path_get(path);
rc = 0;
}
diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c
index 14c2badb8f..65afe5287e 100644
--- a/fs/proc/nommu.c
+++ b/fs/proc/nommu.c
@@ -41,7 +41,10 @@ static int nommu_region_show(struct seq_file *m, struct vm_region *region)
file = region->vm_file;
if (file) {
- struct inode *inode = file_inode(region->vm_file);
+ struct inode *inode;
+
+ file = vmr_pr_or_file(region);
+ inode = file_inode(file);
dev = inode->i_sb->s_dev;
ino = inode->i_ino;
}
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 731642e0f5..e8d6259de6 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -309,7 +309,10 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma)
const char *name = NULL;
if (file) {
- struct inode *inode = file_inode(vma->vm_file);
+ struct inode *inode;
+
+ file = vma_pr_or_file(vma);
+ inode = file_inode(file);
dev = inode->i_sb->s_dev;
ino = inode->i_ino;
pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT;
@@ -1807,7 +1810,7 @@ static int show_numa_map(struct seq_file *m, void *v)
struct proc_maps_private *proc_priv = &numa_priv->proc_maps;
struct vm_area_struct *vma = v;
struct numa_maps *md = &numa_priv->md;
- struct file *file = vma->vm_file;
+ struct file *file = vma_pr_or_file(vma);
struct mm_struct *mm = vma->vm_mm;
struct mm_walk walk = {
.hugetlb_entry = gather_hugetlb_stats,
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index 7907e6419e..d17209cf52 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -155,7 +155,10 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma)
file = vma->vm_file;
if (file) {
- struct inode *inode = file_inode(vma->vm_file);
+ struct inode *inode;
+
+ file = vma_pr_or_file(vma);
+ inode = file_inode(file);
dev = inode->i_sb->s_dev;
ino = inode->i_ino;
pgoff = (loff_t)vma->vm_pgoff << PAGE_SHIFT;
diff --git a/fs/read_write.c b/fs/read_write.c
index 5bbf587f5b..5b2dbddb0e 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -468,6 +468,7 @@ ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos)
return ret;
}
+EXPORT_SYMBOL_GPL(vfs_read);
static ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos)
{
@@ -498,6 +499,30 @@ static ssize_t __vfs_write(struct file *file, const char __user *p,
return -EINVAL;
}
+vfs_readf_t vfs_readf(struct file *file)
+{
+ const struct file_operations *fop = file->f_op;
+
+ if (fop->read)
+ return fop->read;
+ if (fop->read_iter)
+ return new_sync_read;
+ return ERR_PTR(-ENOSYS);
+}
+EXPORT_SYMBOL_GPL(vfs_readf);
+
+vfs_writef_t vfs_writef(struct file *file)
+{
+ const struct file_operations *fop = file->f_op;
+
+ if (fop->write)
+ return fop->write;
+ if (fop->write_iter)
+ return new_sync_write;
+ return ERR_PTR(-ENOSYS);
+}
+EXPORT_SYMBOL_GPL(vfs_writef);
+
ssize_t __kernel_write(struct file *file, const void *buf, size_t count, loff_t *pos)
{
mm_segment_t old_fs;
@@ -566,6 +591,7 @@ ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_
return ret;
}
+EXPORT_SYMBOL_GPL(vfs_write);
/* file_ppos returns &file->f_pos or NULL if file is stream */
static inline loff_t *file_ppos(struct file *file)
diff --git a/fs/splice.c b/fs/splice.c
index 98412721f0..0a1f7498c2 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -834,8 +834,8 @@ EXPORT_SYMBOL(generic_splice_sendpage);
/*
* Attempt to initiate a splice from pipe to file.
*/
-static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
- loff_t *ppos, size_t len, unsigned int flags)
+long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+ loff_t *ppos, size_t len, unsigned int flags)
{
ssize_t (*splice_write)(struct pipe_inode_info *, struct file *,
loff_t *, size_t, unsigned int);
@@ -847,13 +847,14 @@ static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
return splice_write(pipe, out, ppos, len, flags);
}
+EXPORT_SYMBOL_GPL(do_splice_from);
/*
* Attempt to initiate a splice from a file to a pipe.
*/
-static long do_splice_to(struct file *in, loff_t *ppos,
- struct pipe_inode_info *pipe, size_t len,
- unsigned int flags)
+long do_splice_to(struct file *in, loff_t *ppos,
+ struct pipe_inode_info *pipe, size_t len,
+ unsigned int flags)
{
ssize_t (*splice_read)(struct file *, loff_t *,
struct pipe_inode_info *, size_t, unsigned int);
@@ -876,6 +877,7 @@ static long do_splice_to(struct file *in, loff_t *ppos,
return splice_read(in, ppos, pipe, len, flags);
}
+EXPORT_SYMBOL_GPL(do_splice_to);
/**
* splice_direct_to_actor - splices data directly between two non-pipes
diff --git a/fs/sync.c b/fs/sync.c
index 4d1ff010bc..67c66358f3 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -28,7 +28,7 @@
* wait == 1 case since in that case write_inode() functions do
* sync_dirty_buffer() and thus effectively write one block at a time.
*/
-static int __sync_filesystem(struct super_block *sb, int wait)
+int __sync_filesystem(struct super_block *sb, int wait)
{
if (wait)
sync_inodes_sb(sb);
@@ -39,6 +39,7 @@ static int __sync_filesystem(struct super_block *sb, int wait)
sb->s_op->sync_fs(sb, wait);
return __sync_blockdev(sb->s_bdev, wait);
}
+EXPORT_SYMBOL_GPL(__sync_filesystem);
/*
* Write out and wait upon all dirty data associated with this
diff --git a/fs/xattr.c b/fs/xattr.c
index 90dd78f0eb..40b01dd1b1 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -296,6 +296,7 @@ vfs_getxattr_alloc(struct dentry *dentry, const char *name, char **xattr_value,
*xattr_value = value;
return error;
}
+EXPORT_SYMBOL_GPL(vfs_getxattr_alloc);
ssize_t
__vfs_getxattr(struct dentry *dentry, struct inode *inode, const char *name,
diff --git a/include/dt-bindings/board/am335x-bbw-bbb-base.h b/include/dt-bindings/board/am335x-bbw-bbb-base.h
new file mode 100644
index 0000000000..35f6d57ef4
--- /dev/null
+++ b/include/dt-bindings/board/am335x-bbw-bbb-base.h
@@ -0,0 +1,103 @@
+/*
+ * This header provides constants for bbw/bbb pinctrl bindings.
+ *
+ * Copyright (C) 2014 Robert Nelson <robertcnelson@gmail.com>
+ *
+ * Numbers Based on: https://github.com/derekmolloy/boneDeviceTree/tree/master/docs
+ */
+
+#ifndef _DT_BINDINGS_BOARD_AM335X_BBW_BBB_BASE_H
+#define _DT_BINDINGS_BOARD_AM335X_BBW_BBB_BASE_H
+
+#define BONE_P8_03 0x018
+#define BONE_P8_04 0x01C
+
+#define BONE_P8_05 0x008
+#define BONE_P8_06 0x00C
+#define BONE_P8_07 0x090
+#define BONE_P8_08 0x094
+
+#define BONE_P8_09 0x09C
+#define BONE_P8_10 0x098
+#define BONE_P8_11 0x034
+#define BONE_P8_12 0x030
+
+#define BONE_P8_13 0x024
+#define BONE_P8_14 0x028
+#define BONE_P8_15 0x03C
+#define BONE_P8_16 0x038
+
+#define BONE_P8_17 0x02C
+#define BONE_P8_18 0x08C
+#define BONE_P8_19 0x020
+#define BONE_P8_20 0x084
+
+#define BONE_P8_21 0x080
+#define BONE_P8_22 0x014
+#define BONE_P8_23 0x010
+#define BONE_P8_24 0x004
+
+#define BONE_P8_25 0x000
+#define BONE_P8_26 0x07C
+#define BONE_P8_27 0x0E0
+#define BONE_P8_28 0x0E8
+
+#define BONE_P8_29 0x0E4
+#define BONE_P8_30 0x0EC
+#define BONE_P8_31 0x0D8
+#define BONE_P8_32 0x0DC
+
+#define BONE_P8_33 0x0D4
+#define BONE_P8_34 0x0CC
+#define BONE_P8_35 0x0D0
+#define BONE_P8_36 0x0C8
+
+#define BONE_P8_37 0x0C0
+#define BONE_P8_38 0x0C4
+#define BONE_P8_39 0x0B8
+#define BONE_P8_40 0x0BC
+
+#define BONE_P8_41 0x0B0
+#define BONE_P8_42 0x0B4
+#define BONE_P8_43 0x0A8
+#define BONE_P8_44 0x0AC
+
+#define BONE_P8_45 0x0A0
+#define BONE_P8_46 0x0A4
+
+#define BONE_P9_11 0x070
+#define BONE_P9_12 0x078
+
+#define BONE_P9_13 0x074
+#define BONE_P9_14 0x048
+#define BONE_P9_15 0x040
+#define BONE_P9_16 0x04C
+
+#define BONE_P9_17 0x15C
+#define BONE_P9_18 0x158
+#define BONE_P9_19 0x17C
+#define BONE_P9_20 0x178
+
+#define BONE_P9_21 0x154
+#define BONE_P9_22 0x150
+#define BONE_P9_23 0x044
+#define BONE_P9_24 0x184
+
+#define BONE_P9_25 0x1AC
+#define BONE_P9_26 0x180
+#define BONE_P9_27 0x1A4
+#define BONE_P9_28 0x19C
+
+#define BONE_P9_29 0x194
+#define BONE_P9_30 0x198
+#define BONE_P9_31 0x190
+
+/* Shared P21 of P11 */
+#define BONE_P9_41A 0x1B4
+#define BONE_P9_41B 0x1A8
+
+/* Shared P22 of P11 */
+#define BONE_P9_42A 0x164
+#define BONE_P9_42B 0x1A0
+
+#endif
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 1ef375dafb..b8a30da533 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -45,7 +45,11 @@ struct blk_queue_stats;
struct blk_stat_callback;
#define BLKDEV_MIN_RQ 4
+#ifdef CONFIG_PCK_INTERACTIVE
+#define BLKDEV_MAX_RQ 512
+#else
#define BLKDEV_MAX_RQ 128 /* Default maximum */
+#endif
/* Must be consistent with blk_mq_poll_stats_bkt() */
#define BLK_MQ_POLL_STATS_BKTS 16
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 997a530ff4..3dbec51c20 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1331,6 +1331,7 @@ extern void fasync_free(struct fasync_struct *);
/* can be called from interrupts */
extern void kill_fasync(struct fasync_struct **, int, int);
+extern int setfl(int fd, struct file * filp, unsigned long arg);
extern void __f_setown(struct file *filp, struct pid *, enum pid_type, int force);
extern int f_setown(struct file *filp, unsigned long arg, int force);
extern void f_delown(struct file *filp);
@@ -1810,6 +1811,7 @@ struct file_operations {
ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);
unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
int (*check_flags)(int);
+ int (*setfl)(struct file *, unsigned long);
int (*flock) (struct file *, int, struct file_lock *);
ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
@@ -1880,6 +1882,12 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
struct iovec *fast_pointer,
struct iovec **ret_pointer);
+typedef ssize_t (*vfs_readf_t)(struct file *, char __user *, size_t, loff_t *);
+typedef ssize_t (*vfs_writef_t)(struct file *, const char __user *, size_t,
+ loff_t *);
+vfs_readf_t vfs_readf(struct file *file);
+vfs_writef_t vfs_writef(struct file *file);
+
extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *);
extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *);
extern ssize_t vfs_write(struct file *, const char __user *, size_t, loff_t *);
@@ -2298,6 +2306,7 @@ extern int current_umask(void);
extern void ihold(struct inode * inode);
extern void iput(struct inode *);
extern int generic_update_time(struct inode *, struct timespec64 *, int);
+extern int update_time(struct inode *, struct timespec64 *, int);
/* /sys/fs */
extern struct kobject *fs_kobj;
@@ -2586,6 +2595,7 @@ static inline bool sb_is_blkdev_sb(struct super_block *sb)
return false;
}
#endif
+extern int __sync_filesystem(struct super_block *, int);
extern int sync_filesystem(struct super_block *);
extern const struct file_operations def_blk_fops;
extern const struct file_operations def_chr_fops;
diff --git a/include/linux/linux_logo.h b/include/linux/linux_logo.h
index d4d5b93efe..36dda3bea1 100644
--- a/include/linux/linux_logo.h
+++ b/include/linux/linux_logo.h
@@ -36,6 +36,18 @@ struct linux_logo {
extern const struct linux_logo logo_linux_mono;
extern const struct linux_logo logo_linux_vga16;
extern const struct linux_logo logo_linux_clut224;
+extern const struct linux_logo logo_pck_clut224;
+extern const struct linux_logo logo_oldpck_clut224;
+extern const struct linux_logo logo_arch_clut224;
+extern const struct linux_logo logo_gentoo_clut224;
+extern const struct linux_logo logo_exherbo_clut224;
+extern const struct linux_logo logo_slackware_clut224;
+extern const struct linux_logo logo_debian_clut224;
+extern const struct linux_logo logo_fedorasimple_clut224;
+extern const struct linux_logo logo_fedoraglossy_clut224;
+extern const struct linux_logo logo_tits_clut224;
+extern const struct linux_logo logo_bsd_clut224;
+extern const struct linux_logo logo_fbsd_clut224;
extern const struct linux_logo logo_dec_clut224;
extern const struct linux_logo logo_mac_clut224;
extern const struct linux_logo logo_parisc_clut224;
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 0b0d725927..12d18e1803 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -334,6 +334,8 @@ static inline int lockdep_match_key(struct lockdep_map *lock,
return lock->key == key;
}
+struct lock_class *lockdep_hlock_class(struct held_lock *hlock);
+
/*
* Acquire a lock.
*
@@ -476,6 +478,7 @@ struct lockdep_map { };
#define lockdep_depth(tsk) (0)
+#define lockdep_is_held(lock) (1)
#define lockdep_is_held_type(l, r) (1)
#define lockdep_assert_held(l) do { (void)(l); } while (0)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0334ca97c5..3bdae823da 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1538,6 +1538,28 @@ static inline void unmap_shared_mapping_range(struct address_space *mapping,
unmap_mapping_range(mapping, holebegin, holelen, 0);
}
+extern void vma_do_file_update_time(struct vm_area_struct *, const char[], int);
+extern struct file *vma_do_pr_or_file(struct vm_area_struct *, const char[],
+ int);
+extern void vma_do_get_file(struct vm_area_struct *, const char[], int);
+extern void vma_do_fput(struct vm_area_struct *, const char[], int);
+
+#define vma_file_update_time(vma) vma_do_file_update_time(vma, __func__, \
+ __LINE__)
+#define vma_pr_or_file(vma) vma_do_pr_or_file(vma, __func__, \
+ __LINE__)
+#define vma_get_file(vma) vma_do_get_file(vma, __func__, __LINE__)
+#define vma_fput(vma) vma_do_fput(vma, __func__, __LINE__)
+
+#ifndef CONFIG_MMU
+extern struct file *vmr_do_pr_or_file(struct vm_region *, const char[], int);
+extern void vmr_do_fput(struct vm_region *, const char[], int);
+
+#define vmr_pr_or_file(region) vmr_do_pr_or_file(region, __func__, \
+ __LINE__)
+#define vmr_fput(region) vmr_do_fput(region, __func__, __LINE__)
+#endif /* !CONFIG_MMU */
+
extern int access_process_vm(struct task_struct *tsk, unsigned long addr,
void *buf, int len, unsigned int gup_flags);
extern int access_remote_vm(struct mm_struct *mm, unsigned long addr,
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 6a7a1083b6..461db8843e 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -262,6 +262,7 @@ struct vm_region {
unsigned long vm_top; /* region allocated to here */
unsigned long vm_pgoff; /* the offset in vm_file corresponding to vm_start */
struct file *vm_file; /* the backing file or NULL */
+ struct file *vm_prfile; /* the virtual backing file or NULL */
int vm_usage; /* region usage count (access under nommu_region_sem) */
bool vm_icache_flushed : 1; /* true if the icache has been flushed for
@@ -336,6 +337,7 @@ struct vm_area_struct {
unsigned long vm_pgoff; /* Offset (within vm_file) in PAGE_SIZE
units */
struct file * vm_file; /* File we map to (can be NULL). */
+ struct file *vm_prfile; /* shadow of vm_file */
void * vm_private_data; /* was vm_pte (shared mem) */
#ifdef CONFIG_SWAP
diff --git a/include/linux/mnt_namespace.h b/include/linux/mnt_namespace.h
index 35942084cd..24f5fd1a78 100644
--- a/include/linux/mnt_namespace.h
+++ b/include/linux/mnt_namespace.h
@@ -6,11 +6,14 @@
struct mnt_namespace;
struct fs_struct;
struct user_namespace;
+struct vfsmount;
extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *,
struct user_namespace *, struct fs_struct *);
extern void put_mnt_ns(struct mnt_namespace *ns);
+extern int is_current_mnt_ns(struct vfsmount *mnt);
+
extern const struct file_operations proc_mounts_operations;
extern const struct file_operations proc_mountinfo_operations;
extern const struct file_operations proc_mountstats_operations;
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index c842735a4f..4b97f427cc 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -548,6 +548,7 @@
#define PCI_DEVICE_ID_AMD_17H_DF_F3 0x1463
#define PCI_DEVICE_ID_AMD_17H_M10H_DF_F3 0x15eb
#define PCI_DEVICE_ID_AMD_17H_M30H_DF_F3 0x1493
+#define PCI_DEVICE_ID_AMD_17H_M70H_DF_F3 0x1443
#define PCI_DEVICE_ID_AMD_CNB17H_F3 0x1703
#define PCI_DEVICE_ID_AMD_LANCE 0x2000
#define PCI_DEVICE_ID_AMD_LANCE_HOME 0x2001
diff --git a/include/linux/power/pwrseq.h b/include/linux/power/pwrseq.h
new file mode 100644
index 0000000000..cbc344cdf9
--- /dev/null
+++ b/include/linux/power/pwrseq.h
@@ -0,0 +1,81 @@
+#ifndef __LINUX_PWRSEQ_H
+#define __LINUX_PWRSEQ_H
+
+#include <linux/of.h>
+
+#define PWRSEQ_MAX_CLKS 3
+
+/**
+ * struct pwrseq - the power sequence structure
+ * @pwrseq_of_match_table: the OF device id table this pwrseq library supports
+ * @node: the list pointer to be added to pwrseq list
+ * @get: the API is used to get pwrseq instance from the device node
+ * @on: do power on for this pwrseq instance
+ * @off: do power off for this pwrseq instance
+ * @put: release the resources on this pwrseq instance
+ * @suspend: do suspend operation on this pwrseq instance
+ * @resume: do resume operation on this pwrseq instance
+ * @used: this pwrseq instance is used by device
+ */
+struct pwrseq {
+ const struct of_device_id *pwrseq_of_match_table;
+ struct list_head node;
+ int (*get)(struct device_node *np, struct pwrseq *p);
+ int (*on)(struct pwrseq *p);
+ void (*off)(struct pwrseq *p);
+ void (*put)(struct pwrseq *p);
+ int (*suspend)(struct pwrseq *p);
+ int (*resume)(struct pwrseq *p);
+ bool used;
+ bool suspended;
+};
+
+/* used for power sequence instance list in one driver */
+struct pwrseq_list_per_dev {
+ struct pwrseq *pwrseq;
+ struct list_head list;
+};
+
+#if IS_ENABLED(CONFIG_POWER_SEQUENCE)
+void pwrseq_register(struct pwrseq *pwrseq);
+void pwrseq_unregister(struct pwrseq *pwrseq);
+struct pwrseq *of_pwrseq_on(struct device_node *np);
+void of_pwrseq_off(struct pwrseq *pwrseq);
+int of_pwrseq_on_list(struct device_node *np, struct list_head *head);
+void of_pwrseq_off_list(struct list_head *head);
+int pwrseq_suspend(struct pwrseq *p);
+int pwrseq_resume(struct pwrseq *p);
+int pwrseq_suspend_list(struct list_head *head);
+int pwrseq_resume_list(struct list_head *head);
+#else
+static inline void pwrseq_register(struct pwrseq *pwrseq) {}
+static inline void pwrseq_unregister(struct pwrseq *pwrseq) {}
+static inline struct pwrseq *of_pwrseq_on(struct device_node *np)
+{
+ return NULL;
+}
+static void of_pwrseq_off(struct pwrseq *pwrseq) {}
+static int of_pwrseq_on_list(struct device_node *np, struct list_head *head)
+{
+ return 0;
+}
+static void of_pwrseq_off_list(struct list_head *head) {}
+static int pwrseq_suspend(struct pwrseq *p)
+{
+ return 0;
+}
+static int pwrseq_resume(struct pwrseq *p)
+{
+ return 0;
+}
+static int pwrseq_suspend_list(struct list_head *head)
+{
+ return 0;
+}
+static int pwrseq_resume_list(struct list_head *head)
+{
+ return 0;
+}
+#endif /* CONFIG_POWER_SEQUENCE */
+
+#endif /* __LINUX_PWRSEQ_H */
diff --git a/include/linux/splice.h b/include/linux/splice.h
index 74b4911ac1..19789fbea5 100644
--- a/include/linux/splice.h
+++ b/include/linux/splice.h
@@ -87,4 +87,10 @@ extern void splice_shrink_spd(struct splice_pipe_desc *);
extern const struct pipe_buf_operations page_cache_pipe_buf_ops;
extern const struct pipe_buf_operations default_pipe_buf_ops;
+
+extern long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+ loff_t *ppos, size_t len, unsigned int flags);
+extern long do_splice_to(struct file *in, loff_t *ppos,
+ struct pipe_inode_info *pipe, size_t len,
+ unsigned int flags);
#endif
diff --git a/include/linux/thinkpad_ec.h b/include/linux/thinkpad_ec.h
new file mode 100644
index 0000000000..1b80d7ee54
--- /dev/null
+++ b/include/linux/thinkpad_ec.h
@@ -0,0 +1,47 @@
+/*
+ * thinkpad_ec.h - interface to ThinkPad embedded controller LPC3 functions
+ *
+ * Copyright (C) 2005 Shem Multinymous <multinymous@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef _THINKPAD_EC_H
+#define _THINKPAD_EC_H
+
+#ifdef __KERNEL__
+
+#define TP_CONTROLLER_ROW_LEN 16
+
+/* EC transactions input and output (possibly partial) vectors of 16 bytes. */
+struct thinkpad_ec_row {
+ u16 mask; /* bitmap of which entries of val[] are meaningful */
+ u8 val[TP_CONTROLLER_ROW_LEN];
+};
+
+extern int __must_check thinkpad_ec_lock(void);
+extern int __must_check thinkpad_ec_try_lock(void);
+extern void thinkpad_ec_unlock(void);
+
+extern int thinkpad_ec_read_row(const struct thinkpad_ec_row *args,
+ struct thinkpad_ec_row *data);
+extern int thinkpad_ec_try_read_row(const struct thinkpad_ec_row *args,
+ struct thinkpad_ec_row *mask);
+extern int thinkpad_ec_prefetch_row(const struct thinkpad_ec_row *args);
+extern void thinkpad_ec_invalidate(void);
+
+
+#endif /* __KERNEL */
+#endif /* _THINKPAD_EC_H */
diff --git a/include/trace/events/fs.h b/include/trace/events/fs.h
new file mode 100644
index 0000000000..fb634b74ad
--- /dev/null
+++ b/include/trace/events/fs.h
@@ -0,0 +1,53 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM fs
+
+#if !defined(_TRACE_FS_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_FS_H
+
+#include <linux/fs.h>
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(do_sys_open,
+
+ TP_PROTO(const char *filename, int flags, int mode),
+
+ TP_ARGS(filename, flags, mode),
+
+ TP_STRUCT__entry(
+ __string( filename, filename )
+ __field( int, flags )
+ __field( int, mode )
+ ),
+
+ TP_fast_assign(
+ __assign_str(filename, filename);
+ __entry->flags = flags;
+ __entry->mode = mode;
+ ),
+
+ TP_printk("\"%s\" %x %o",
+ __get_str(filename), __entry->flags, __entry->mode)
+);
+
+TRACE_EVENT(open_exec,
+
+ TP_PROTO(const char *filename),
+
+ TP_ARGS(filename),
+
+ TP_STRUCT__entry(
+ __string( filename, filename )
+ ),
+
+ TP_fast_assign(
+ __assign_str(filename, filename);
+ ),
+
+ TP_printk("\"%s\"",
+ __get_str(filename))
+);
+
+#endif /* _TRACE_FS_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
new file mode 100644
index 0000000000..e1b2bd375e
--- /dev/null
+++ b/include/uapi/linux/Kbuild
@@ -0,0 +1 @@
+header-y = aufs_type.h
diff --git a/include/uapi/linux/aufs_type.h b/include/uapi/linux/aufs_type.h
new file mode 100644
index 0000000000..f5c1150463
--- /dev/null
+++ b/include/uapi/linux/aufs_type.h
@@ -0,0 +1,452 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Copyright (C) 2005-2019 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __AUFS_TYPE_H__
+#define __AUFS_TYPE_H__
+
+#define AUFS_NAME "aufs"
+
+#ifdef __KERNEL__
+/*
+ * define it before including all other headers.
+ * sched.h may use pr_* macros before defining "current", so define the
+ * no-current version first, and re-define later.
+ */
+#define pr_fmt(fmt) AUFS_NAME " %s:%d: " fmt, __func__, __LINE__
+#include <linux/sched.h>
+#undef pr_fmt
+#define pr_fmt(fmt) \
+ AUFS_NAME " %s:%d:%.*s[%d]: " fmt, __func__, __LINE__, \
+ (int)sizeof(current->comm), current->comm, current->pid
+#else
+#include <stdint.h>
+#include <sys/types.h>
+#endif /* __KERNEL__ */
+
+#include <linux/limits.h>
+
+#define AUFS_VERSION "5.3-20190923"
+
+/* todo? move this to linux-2.6.19/include/magic.h */
+#define AUFS_SUPER_MAGIC ('a' << 24 | 'u' << 16 | 'f' << 8 | 's')
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_BRANCH_MAX_127
+typedef int8_t aufs_bindex_t;
+#define AUFS_BRANCH_MAX 127
+#else
+typedef int16_t aufs_bindex_t;
+#ifdef CONFIG_AUFS_BRANCH_MAX_511
+#define AUFS_BRANCH_MAX 511
+#elif defined(CONFIG_AUFS_BRANCH_MAX_1023)
+#define AUFS_BRANCH_MAX 1023
+#elif defined(CONFIG_AUFS_BRANCH_MAX_32767)
+#define AUFS_BRANCH_MAX 32767
+#endif
+#endif
+
+#ifdef __KERNEL__
+#ifndef AUFS_BRANCH_MAX
+#error unknown CONFIG_AUFS_BRANCH_MAX value
+#endif
+#endif /* __KERNEL__ */
+
+/* ---------------------------------------------------------------------- */
+
+#define AUFS_FSTYPE AUFS_NAME
+
+#define AUFS_ROOT_INO 2
+#define AUFS_FIRST_INO 11
+
+#define AUFS_WH_PFX ".wh."
+#define AUFS_WH_PFX_LEN ((int)sizeof(AUFS_WH_PFX) - 1)
+#define AUFS_WH_TMP_LEN 4
+/* a limit for rmdir/rename a dir and copyup */
+#define AUFS_MAX_NAMELEN (NAME_MAX \
+ - AUFS_WH_PFX_LEN * 2 /* doubly whiteouted */\
+ - 1 /* dot */\
+ - AUFS_WH_TMP_LEN) /* hex */
+#define AUFS_XINO_FNAME "." AUFS_NAME ".xino"
+#define AUFS_XINO_DEFPATH "/tmp/" AUFS_XINO_FNAME
+#define AUFS_XINO_DEF_SEC 30 /* seconds */
+#define AUFS_XINO_DEF_TRUNC 45 /* percentage */
+#define AUFS_DIRWH_DEF 3
+#define AUFS_RDCACHE_DEF 10 /* seconds */
+#define AUFS_RDCACHE_MAX 3600 /* seconds */
+#define AUFS_RDBLK_DEF 512 /* bytes */
+#define AUFS_RDHASH_DEF 32
+#define AUFS_WKQ_NAME AUFS_NAME "d"
+#define AUFS_MFS_DEF_SEC 30 /* seconds */
+#define AUFS_MFS_MAX_SEC 3600 /* seconds */
+#define AUFS_FHSM_CACHE_DEF_SEC 30 /* seconds */
+#define AUFS_PLINK_WARN 50 /* number of plinks in a single bucket */
+
+/* pseudo-link maintenace under /proc */
+#define AUFS_PLINK_MAINT_NAME "plink_maint"
+#define AUFS_PLINK_MAINT_DIR "fs/" AUFS_NAME
+#define AUFS_PLINK_MAINT_PATH AUFS_PLINK_MAINT_DIR "/" AUFS_PLINK_MAINT_NAME
+
+/* dirren, renamed dir */
+#define AUFS_DR_INFO_PFX AUFS_WH_PFX ".dr."
+#define AUFS_DR_BRHINO_NAME AUFS_WH_PFX "hino"
+/* whiteouted doubly */
+#define AUFS_WH_DR_INFO_PFX AUFS_WH_PFX AUFS_DR_INFO_PFX
+#define AUFS_WH_DR_BRHINO AUFS_WH_PFX AUFS_DR_BRHINO_NAME
+
+#define AUFS_DIROPQ_NAME AUFS_WH_PFX ".opq" /* whiteouted doubly */
+#define AUFS_WH_DIROPQ AUFS_WH_PFX AUFS_DIROPQ_NAME
+
+#define AUFS_BASE_NAME AUFS_WH_PFX AUFS_NAME
+#define AUFS_PLINKDIR_NAME AUFS_WH_PFX "plnk"
+#define AUFS_ORPHDIR_NAME AUFS_WH_PFX "orph"
+
+/* doubly whiteouted */
+#define AUFS_WH_BASE AUFS_WH_PFX AUFS_BASE_NAME
+#define AUFS_WH_PLINKDIR AUFS_WH_PFX AUFS_PLINKDIR_NAME
+#define AUFS_WH_ORPHDIR AUFS_WH_PFX AUFS_ORPHDIR_NAME
+
+/* branch permissions and attributes */
+#define AUFS_BRPERM_RW "rw"
+#define AUFS_BRPERM_RO "ro"
+#define AUFS_BRPERM_RR "rr"
+#define AUFS_BRATTR_COO_REG "coo_reg"
+#define AUFS_BRATTR_COO_ALL "coo_all"
+#define AUFS_BRATTR_FHSM "fhsm"
+#define AUFS_BRATTR_UNPIN "unpin"
+#define AUFS_BRATTR_ICEX "icex"
+#define AUFS_BRATTR_ICEX_SEC "icexsec"
+#define AUFS_BRATTR_ICEX_SYS "icexsys"
+#define AUFS_BRATTR_ICEX_TR "icextr"
+#define AUFS_BRATTR_ICEX_USR "icexusr"
+#define AUFS_BRATTR_ICEX_OTH "icexoth"
+#define AUFS_BRRATTR_WH "wh"
+#define AUFS_BRWATTR_NLWH "nolwh"
+#define AUFS_BRWATTR_MOO "moo"
+
+#define AuBrPerm_RW 1 /* writable, hardlinkable wh */
+#define AuBrPerm_RO (1 << 1) /* readonly */
+#define AuBrPerm_RR (1 << 2) /* natively readonly */
+#define AuBrPerm_Mask (AuBrPerm_RW | AuBrPerm_RO | AuBrPerm_RR)
+
+#define AuBrAttr_COO_REG (1 << 3) /* copy-up on open */
+#define AuBrAttr_COO_ALL (1 << 4)
+#define AuBrAttr_COO_Mask (AuBrAttr_COO_REG | AuBrAttr_COO_ALL)
+
+#define AuBrAttr_FHSM (1 << 5) /* file-based hsm */
+#define AuBrAttr_UNPIN (1 << 6) /* rename-able top dir of
+ branch. meaningless since
+ linux-3.18-rc1 */
+
+/* ignore error in copying XATTR */
+#define AuBrAttr_ICEX_SEC (1 << 7)
+#define AuBrAttr_ICEX_SYS (1 << 8)
+#define AuBrAttr_ICEX_TR (1 << 9)
+#define AuBrAttr_ICEX_USR (1 << 10)
+#define AuBrAttr_ICEX_OTH (1 << 11)
+#define AuBrAttr_ICEX (AuBrAttr_ICEX_SEC \
+ | AuBrAttr_ICEX_SYS \
+ | AuBrAttr_ICEX_TR \
+ | AuBrAttr_ICEX_USR \
+ | AuBrAttr_ICEX_OTH)
+
+#define AuBrRAttr_WH (1 << 12) /* whiteout-able */
+#define AuBrRAttr_Mask AuBrRAttr_WH
+
+#define AuBrWAttr_NoLinkWH (1 << 13) /* un-hardlinkable whiteouts */
+#define AuBrWAttr_MOO (1 << 14) /* move-up on open */
+#define AuBrWAttr_Mask (AuBrWAttr_NoLinkWH | AuBrWAttr_MOO)
+
+#define AuBrAttr_CMOO_Mask (AuBrAttr_COO_Mask | AuBrWAttr_MOO)
+
+/* #warning test userspace */
+#ifdef __KERNEL__
+#ifndef CONFIG_AUFS_FHSM
+#undef AuBrAttr_FHSM
+#define AuBrAttr_FHSM 0
+#endif
+#ifndef CONFIG_AUFS_XATTR
+#undef AuBrAttr_ICEX
+#define AuBrAttr_ICEX 0
+#undef AuBrAttr_ICEX_SEC
+#define AuBrAttr_ICEX_SEC 0
+#undef AuBrAttr_ICEX_SYS
+#define AuBrAttr_ICEX_SYS 0
+#undef AuBrAttr_ICEX_TR
+#define AuBrAttr_ICEX_TR 0
+#undef AuBrAttr_ICEX_USR
+#define AuBrAttr_ICEX_USR 0
+#undef AuBrAttr_ICEX_OTH
+#define AuBrAttr_ICEX_OTH 0
+#endif
+#endif
+
+/* the longest combination */
+/* AUFS_BRATTR_ICEX and AUFS_BRATTR_ICEX_TR don't affect here */
+#define AuBrPermStrSz sizeof(AUFS_BRPERM_RW \
+ "+" AUFS_BRATTR_COO_REG \
+ "+" AUFS_BRATTR_FHSM \
+ "+" AUFS_BRATTR_UNPIN \
+ "+" AUFS_BRATTR_ICEX_SEC \
+ "+" AUFS_BRATTR_ICEX_SYS \
+ "+" AUFS_BRATTR_ICEX_USR \
+ "+" AUFS_BRATTR_ICEX_OTH \
+ "+" AUFS_BRWATTR_NLWH)
+
+typedef struct {
+ char a[AuBrPermStrSz];
+} au_br_perm_str_t;
+
+static inline int au_br_writable(int brperm)
+{
+ return brperm & AuBrPerm_RW;
+}
+
+static inline int au_br_whable(int brperm)
+{
+ return brperm & (AuBrPerm_RW | AuBrRAttr_WH);
+}
+
+static inline int au_br_wh_linkable(int brperm)
+{
+ return !(brperm & AuBrWAttr_NoLinkWH);
+}
+
+static inline int au_br_cmoo(int brperm)
+{
+ return brperm & AuBrAttr_CMOO_Mask;
+}
+
+static inline int au_br_fhsm(int brperm)
+{
+ return brperm & AuBrAttr_FHSM;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* ioctl */
+enum {
+ /* readdir in userspace */
+ AuCtl_RDU,
+ AuCtl_RDU_INO,
+
+ AuCtl_WBR_FD, /* pathconf wrapper */
+ AuCtl_IBUSY, /* busy inode */
+ AuCtl_MVDOWN, /* move-down */
+ AuCtl_BR, /* info about branches */
+ AuCtl_FHSM_FD /* connection for fhsm */
+};
+
+/* borrowed from linux/include/linux/kernel.h */
+#ifndef ALIGN
+#ifdef _GNU_SOURCE
+#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a)-1)
+#else
+#define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
+#endif
+#define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask))
+#endif
+
+/* borrowed from linux/include/linux/compiler-gcc3.h */
+#ifndef __aligned
+#define __aligned(x) __attribute__((aligned(x)))
+#endif
+
+#ifdef __KERNEL__
+#ifndef __packed
+#define __packed __attribute__((packed))
+#endif
+#endif
+
+struct au_rdu_cookie {
+ uint64_t h_pos;
+ int16_t bindex;
+ uint8_t flags;
+ uint8_t pad;
+ uint32_t generation;
+} __aligned(8);
+
+struct au_rdu_ent {
+ uint64_t ino;
+ int16_t bindex;
+ uint8_t type;
+ uint8_t nlen;
+ uint8_t wh;
+ char name[0];
+} __aligned(8);
+
+static inline int au_rdu_len(int nlen)
+{
+ /* include the terminating NULL */
+ return ALIGN(sizeof(struct au_rdu_ent) + nlen + 1,
+ sizeof(uint64_t));
+}
+
+union au_rdu_ent_ul {
+ struct au_rdu_ent __user *e;
+ uint64_t ul;
+};
+
+enum {
+ AufsCtlRduV_SZ,
+ AufsCtlRduV_End
+};
+
+struct aufs_rdu {
+ /* input */
+ union {
+ uint64_t sz; /* AuCtl_RDU */
+ uint64_t nent; /* AuCtl_RDU_INO */
+ };
+ union au_rdu_ent_ul ent;
+ uint16_t verify[AufsCtlRduV_End];
+
+ /* input/output */
+ uint32_t blk;
+
+ /* output */
+ union au_rdu_ent_ul tail;
+ /* number of entries which were added in a single call */
+ uint64_t rent;
+ uint8_t full;
+ uint8_t shwh;
+
+ struct au_rdu_cookie cookie;
+} __aligned(8);
+
+/* ---------------------------------------------------------------------- */
+
+/* dirren. the branch is identified by the filename who contains this */
+struct au_drinfo {
+ uint64_t ino;
+ union {
+ uint8_t oldnamelen;
+ uint64_t _padding;
+ };
+ uint8_t oldname[0];
+} __aligned(8);
+
+struct au_drinfo_fdata {
+ uint32_t magic;
+ struct au_drinfo drinfo;
+} __aligned(8);
+
+#define AUFS_DRINFO_MAGIC_V1 ('a' << 24 | 'd' << 16 | 'r' << 8 | 0x01)
+/* future */
+#define AUFS_DRINFO_MAGIC_V2 ('a' << 24 | 'd' << 16 | 'r' << 8 | 0x02)
+
+/* ---------------------------------------------------------------------- */
+
+struct aufs_wbr_fd {
+ uint32_t oflags;
+ int16_t brid;
+} __aligned(8);
+
+/* ---------------------------------------------------------------------- */
+
+struct aufs_ibusy {
+ uint64_t ino, h_ino;
+ int16_t bindex;
+} __aligned(8);
+
+/* ---------------------------------------------------------------------- */
+
+/* error code for move-down */
+/* the actual message strings are implemented in aufs-util.git */
+enum {
+ EAU_MVDOWN_OPAQUE = 1,
+ EAU_MVDOWN_WHITEOUT,
+ EAU_MVDOWN_UPPER,
+ EAU_MVDOWN_BOTTOM,
+ EAU_MVDOWN_NOUPPER,
+ EAU_MVDOWN_NOLOWERBR,
+ EAU_Last
+};
+
+/* flags for move-down */
+#define AUFS_MVDOWN_DMSG 1
+#define AUFS_MVDOWN_OWLOWER (1 << 1) /* overwrite lower */
+#define AUFS_MVDOWN_KUPPER (1 << 2) /* keep upper */
+#define AUFS_MVDOWN_ROLOWER (1 << 3) /* do even if lower is RO */
+#define AUFS_MVDOWN_ROLOWER_R (1 << 4) /* did on lower RO */
+#define AUFS_MVDOWN_ROUPPER (1 << 5) /* do even if upper is RO */
+#define AUFS_MVDOWN_ROUPPER_R (1 << 6) /* did on upper RO */
+#define AUFS_MVDOWN_BRID_UPPER (1 << 7) /* upper brid */
+#define AUFS_MVDOWN_BRID_LOWER (1 << 8) /* lower brid */
+#define AUFS_MVDOWN_FHSM_LOWER (1 << 9) /* find fhsm attr for lower */
+#define AUFS_MVDOWN_STFS (1 << 10) /* req. stfs */
+#define AUFS_MVDOWN_STFS_FAILED (1 << 11) /* output: stfs is unusable */
+#define AUFS_MVDOWN_BOTTOM (1 << 12) /* output: no more lowers */
+
+/* index for move-down */
+enum {
+ AUFS_MVDOWN_UPPER,
+ AUFS_MVDOWN_LOWER,
+ AUFS_MVDOWN_NARRAY
+};
+
+/*
+ * additional info of move-down
+ * number of free blocks and inodes.
+ * subset of struct kstatfs, but smaller and always 64bit.
+ */
+struct aufs_stfs {
+ uint64_t f_blocks;
+ uint64_t f_bavail;
+ uint64_t f_files;
+ uint64_t f_ffree;
+};
+
+struct aufs_stbr {
+ int16_t brid; /* optional input */
+ int16_t bindex; /* output */
+ struct aufs_stfs stfs; /* output when AUFS_MVDOWN_STFS set */
+} __aligned(8);
+
+struct aufs_mvdown {
+ uint32_t flags; /* input/output */
+ struct aufs_stbr stbr[AUFS_MVDOWN_NARRAY]; /* input/output */
+ int8_t au_errno; /* output */
+} __aligned(8);
+
+/* ---------------------------------------------------------------------- */
+
+union aufs_brinfo {
+ /* PATH_MAX may differ between kernel-space and user-space */
+ char _spacer[4096];
+ struct {
+ int16_t id;
+ int perm;
+ char path[0];
+ };
+} __aligned(8);
+
+/* ---------------------------------------------------------------------- */
+
+#define AuCtlType 'A'
+#define AUFS_CTL_RDU _IOWR(AuCtlType, AuCtl_RDU, struct aufs_rdu)
+#define AUFS_CTL_RDU_INO _IOWR(AuCtlType, AuCtl_RDU_INO, struct aufs_rdu)
+#define AUFS_CTL_WBR_FD _IOW(AuCtlType, AuCtl_WBR_FD, \
+ struct aufs_wbr_fd)
+#define AUFS_CTL_IBUSY _IOWR(AuCtlType, AuCtl_IBUSY, struct aufs_ibusy)
+#define AUFS_CTL_MVDOWN _IOWR(AuCtlType, AuCtl_MVDOWN, \
+ struct aufs_mvdown)
+#define AUFS_CTL_BRINFO _IOW(AuCtlType, AuCtl_BR, union aufs_brinfo)
+#define AUFS_CTL_FHSM_FD _IOW(AuCtlType, AuCtl_FHSM_FD, int)
+
+#endif /* __AUFS_TYPE_H__ */
diff --git a/include/uapi/linux/can/isotp.h b/include/uapi/linux/can/isotp.h
new file mode 100644
index 0000000000..548e732f33
--- /dev/null
+++ b/include/uapi/linux/can/isotp.h
@@ -0,0 +1,135 @@
+/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
+/*
+ * socketcan/can/isotp.h
+ *
+ * Definitions for isotp CAN sockets
+ *
+ * Author: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
+ * Copyright (c) 2008 Volkswagen Group Electronic Research
+ * All rights reserved.
+ *
+ * Send feedback to <socketcan-users@lists.berlios.de>
+ *
+ */
+
+#ifndef CAN_ISOTP_H
+#define CAN_ISOTP_H
+
+#include <linux/can.h>
+
+#define SOL_CAN_ISOTP (SOL_CAN_BASE + CAN_ISOTP)
+
+/* for socket options affecting the socket (not the global system) */
+
+#define CAN_ISOTP_OPTS 1 /* pass struct can_isotp_options */
+
+#define CAN_ISOTP_RECV_FC 2 /* pass struct can_isotp_fc_options */
+
+/* sockopts to force stmin timer values for protocol regression tests */
+
+#define CAN_ISOTP_TX_STMIN 3 /* pass __u32 value in nano secs */
+ /* use this time instead of value */
+ /* provided in FC from the receiver */
+
+#define CAN_ISOTP_RX_STMIN 4 /* pass __u32 value in nano secs */
+ /* ignore received CF frames which */
+ /* timestamps differ less than val */
+
+#define CAN_ISOTP_LL_OPTS 5 /* pass struct can_isotp_ll_options */
+
+struct can_isotp_options {
+
+ __u32 flags; /* set flags for isotp behaviour. */
+ /* __u32 value : flags see below */
+
+ __u32 frame_txtime; /* frame transmission time (N_As/N_Ar) */
+ /* __u32 value : time in nano secs */
+
+ __u8 ext_address; /* set address for extended addressing */
+ /* __u8 value : extended address */
+
+ __u8 txpad_content; /* set content of padding byte (tx) */
+ /* __u8 value : content on tx path */
+
+ __u8 rxpad_content; /* set content of padding byte (rx) */
+ /* __u8 value : content on rx path */
+
+ __u8 rx_ext_address; /* set address for extended addressing */
+ /* __u8 value : extended address (rx) */
+};
+
+struct can_isotp_fc_options {
+
+ __u8 bs; /* blocksize provided in FC frame */
+ /* __u8 value : blocksize. 0 = off */
+
+ __u8 stmin; /* separation time provided in FC frame */
+ /* __u8 value : */
+ /* 0x00 - 0x7F : 0 - 127 ms */
+ /* 0x80 - 0xF0 : reserved */
+ /* 0xF1 - 0xF9 : 100 us - 900 us */
+ /* 0xFA - 0xFF : reserved */
+
+ __u8 wftmax; /* max. number of wait frame transmiss. */
+ /* __u8 value : 0 = omit FC N_PDU WT */
+};
+
+struct can_isotp_ll_options {
+
+ __u8 mtu; /* generated & accepted CAN frame type */
+ /* __u8 value : */
+ /* CAN_MTU (16) -> standard CAN 2.0 */
+ /* CANFD_MTU (72) -> CAN FD frame */
+
+ __u8 tx_dl; /* tx link layer data length in bytes */
+ /* (configured maximum payload length) */
+ /* __u8 value : 8,12,16,20,24,32,48,64 */
+ /* => rx path supports all LL_DL values */
+
+ __u8 tx_flags; /* set into struct canfd_frame.flags */
+ /* at frame creation: e.g. CANFD_BRS */
+ /* Obsolete when the BRS flag is fixed */
+ /* by the CAN netdriver configuration */
+};
+
+/* flags for isotp behaviour */
+
+#define CAN_ISOTP_LISTEN_MODE 0x001 /* listen only (do not send FC) */
+#define CAN_ISOTP_EXTEND_ADDR 0x002 /* enable extended addressing */
+#define CAN_ISOTP_TX_PADDING 0x004 /* enable CAN frame padding tx path */
+#define CAN_ISOTP_RX_PADDING 0x008 /* enable CAN frame padding rx path */
+#define CAN_ISOTP_CHK_PAD_LEN 0x010 /* check received CAN frame padding */
+#define CAN_ISOTP_CHK_PAD_DATA 0x020 /* check received CAN frame padding */
+#define CAN_ISOTP_HALF_DUPLEX 0x040 /* half duplex error state handling */
+#define CAN_ISOTP_FORCE_TXSTMIN 0x080 /* ignore stmin from received FC */
+#define CAN_ISOTP_FORCE_RXSTMIN 0x100 /* ignore CFs depending on rx stmin */
+#define CAN_ISOTP_RX_EXT_ADDR 0x200 /* different rx extended addressing */
+
+
+/* default values */
+
+#define CAN_ISOTP_DEFAULT_FLAGS 0
+#define CAN_ISOTP_DEFAULT_EXT_ADDRESS 0x00
+#define CAN_ISOTP_DEFAULT_PAD_CONTENT 0xCC /* prevent bit-stuffing */
+#define CAN_ISOTP_DEFAULT_FRAME_TXTIME 0
+#define CAN_ISOTP_DEFAULT_RECV_BS 0
+#define CAN_ISOTP_DEFAULT_RECV_STMIN 0x00
+#define CAN_ISOTP_DEFAULT_RECV_WFTMAX 0
+
+#define CAN_ISOTP_DEFAULT_LL_MTU CAN_MTU
+#define CAN_ISOTP_DEFAULT_LL_TX_DL CAN_MAX_DLEN
+#define CAN_ISOTP_DEFAULT_LL_TX_FLAGS 0
+
+/*
+ * Remark on CAN_ISOTP_DEFAULT_RECV_* values:
+ *
+ * We can strongly assume, that the Linux Kernel implementation of
+ * CAN_ISOTP is capable to run with BS=0, STmin=0 and WFTmax=0.
+ * But as we like to be able to behave as a commonly available ECU,
+ * these default settings can be changed via sockopts.
+ * For that reason the STmin value is intentionally _not_ checked for
+ * consistency and copied directly into the flow control (FC) frame.
+ *
+ */
+
+#endif
diff --git a/include/uapi/linux/futex.h b/include/uapi/linux/futex.h
index a89eb0accd..2401c4cf50 100644
--- a/include/uapi/linux/futex.h
+++ b/include/uapi/linux/futex.h
@@ -21,6 +21,7 @@
#define FUTEX_WAKE_BITSET 10
#define FUTEX_WAIT_REQUEUE_PI 11
#define FUTEX_CMP_REQUEUE_PI 12
+#define FUTEX_WAIT_MULTIPLE 13
#define FUTEX_PRIVATE_FLAG 128
#define FUTEX_CLOCK_REALTIME 256
@@ -150,4 +151,10 @@ struct robust_list_head {
(((op & 0xf) << 28) | ((cmp & 0xf) << 24) \
| ((oparg & 0xfff) << 12) | (cmparg & 0xfff))
+struct futex_wait_block {
+ __u32 __user *uaddr;
+ __u32 val;
+ __u32 bitset;
+};
+
#endif /* _UAPI_LINUX_FUTEX_H */
diff --git a/include/uapi/linux/vt.h b/include/uapi/linux/vt.h
index e9d39c4852..3bceead8da 100644
--- a/include/uapi/linux/vt.h
+++ b/include/uapi/linux/vt.h
@@ -3,12 +3,25 @@
#define _UAPI_LINUX_VT_H
+/*
+ * We will make this definition solely for the purpose of making packages
+ * such as splashutils build, because they can not understand that
+ * NR_TTY_DEVICES is defined in the kernel configuration.
+ */
+#ifndef CONFIG_NR_TTY_DEVICES
+#define CONFIG_NR_TTY_DEVICES 63
+#endif
+
/*
* These constants are also useful for user-level apps (e.g., VC
* resizing).
*/
#define MIN_NR_CONSOLES 1 /* must be at least 1 */
-#define MAX_NR_CONSOLES 63 /* serial lines start at 64 */
+/*
+ * NR_TTY_DEVICES:
+ * Value MUST be at least 12 and must never be higher then 63
+ */
+#define MAX_NR_CONSOLES CONFIG_NR_TTY_DEVICES /* serial lines start above this */
/* Note: the ioctl VT_GETSTATE does not work for
consoles 16 and higher (since it returns a short) */
diff --git a/init/Kconfig b/init/Kconfig
index bd7d650d4a..9eac89b375 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -68,6 +68,38 @@ config THREAD_INFO_IN_TASK
menu "General setup"
+config PCK_INTERACTIVE
+ bool "Tune kernel for interactivity"
+ default y
+ help
+ Tunes the kernel for responsiveness at the cost of throughput and power usage.
+
+ --- Virtual Memory Subsystem ---------------------------
+
+ Mem dirty before bg writeback..: 10 % -> 20 %
+ Mem dirty before sync writeback: 20 % -> 50 %
+
+ --- Block Layer ----------------------------------------
+
+ Queue depth...............: 128 -> 512
+ Default scheduler.........: mq-deadline -> bfq
+
+ --- CFS CPU Scheduler ----------------------------------
+
+ Scheduling latency.............: 6 -> 4 ms
+ Minimal granularity............: 0.75 -> 0.4 ms
+ Wakeup granularity.............: 1 -> 0.5 ms
+ CPU migration cost.............: 0.5 -> 0.25 ms
+ Bandwidth slice size...........: 5 -> 3 ms
+ Ondemand sampling down factor..: 1 -> 5
+
+ --- MuQSS CPU Scheduler --------------------------------
+
+ Scheduling interval............: 6 -> 2 ms
+ ISO task max realtime use......: 70 % -> 25 %
+ Ondemand sampling down factor..: 1 -> 5
+ Yield type.....................: 1 -> 2
+
config BROKEN
bool
@@ -1091,6 +1123,22 @@ config USER_NS
If unsure, say N.
+config USER_NS_UNPRIVILEGED
+ bool "Allow unprivileged users to create namespaces"
+ default y
+ depends on USER_NS
+ help
+ When disabled, unprivileged users will not be able to create
+ new namespaces. Allowing users to create their own namespaces
+ has been part of several recent local privilege escalation
+ exploits, so if you need user namespaces but are
+ paranoid^Wsecurity-conscious you want to disable this.
+
+ This setting can be overridden at runtime via the
+ kernel.unprivileged_userns_clone sysctl.
+
+ If unsure, say Y.
+
config PID_NS
bool "PID Namespaces"
default y
@@ -1215,6 +1263,14 @@ config CC_OPTIMIZE_FOR_PERFORMANCE
with the "-O2" compiler flag for best performance and most
helpful compile-time warnings.
+config CC_OPTIMIZE_HARDER
+ bool "Optimize harder"
+ imply CC_DISABLE_WARN_MAYBE_UNINITIALIZED # avoid false positives
+ help
+ This option will pass "-O3" to your compiler resulting in a
+ larger and faster kernel. The more complex optimizations also
+ increase compilation time and may affect stability.
+
config CC_OPTIMIZE_FOR_SIZE
bool "Optimize for size"
imply CC_DISABLE_WARN_MAYBE_UNINITIALIZED # avoid false positives
diff --git a/kernel/fork.c b/kernel/fork.c
index 541fd805fb..31bd5baf82 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -106,6 +106,11 @@
#define CREATE_TRACE_POINTS
#include <trace/events/task.h>
+#ifdef CONFIG_USER_NS
+extern int unprivileged_userns_clone;
+#else
+#define unprivileged_userns_clone 0
+#endif
/*
* Minimum number of threads to boot the kernel
@@ -553,7 +558,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm,
struct inode *inode = file_inode(file);
struct address_space *mapping = file->f_mapping;
- get_file(file);
+ vma_get_file(tmp);
if (tmp->vm_flags & VM_DENYWRITE)
atomic_dec(&inode->i_writecount);
i_mmap_lock_write(mapping);
@@ -1788,6 +1793,10 @@ static __latent_entropy struct task_struct *copy_process(
if ((clone_flags & (CLONE_NEWUSER|CLONE_FS)) == (CLONE_NEWUSER|CLONE_FS))
return ERR_PTR(-EINVAL);
+ if ((clone_flags & CLONE_NEWUSER) && !unprivileged_userns_clone)
+ if (!capable(CAP_SYS_ADMIN))
+ return ERR_PTR(-EPERM);
+
/*
* Thread groups must share signals as well, and detached threads
* can only be started up within the thread group.
@@ -2819,6 +2828,12 @@ int ksys_unshare(unsigned long unshare_flags)
if (unshare_flags & CLONE_NEWNS)
unshare_flags |= CLONE_FS;
+ if ((unshare_flags & CLONE_NEWUSER) && !unprivileged_userns_clone) {
+ err = -EPERM;
+ if (!capable(CAP_SYS_ADMIN))
+ goto bad_unshare_out;
+ }
+
err = check_unshare_flags(unshare_flags);
if (err)
goto bad_unshare_out;
diff --git a/kernel/futex.c b/kernel/futex.c
index 6d50728ef2..2623e8f152 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -183,6 +183,7 @@ static int __read_mostly futex_cmpxchg_enabled;
#endif
#define FLAGS_CLOCKRT 0x02
#define FLAGS_HAS_TIMEOUT 0x04
+#define FLAGS_WAKE_MULTIPLE 0x08
/*
* Priority Inheritance state:
@@ -2631,6 +2632,39 @@ static void futex_wait_queue_me(struct futex_hash_bucket *hb, struct futex_q *q,
__set_current_state(TASK_RUNNING);
}
+static int __futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags,
+ struct futex_q *q, struct futex_hash_bucket **hb)
+{
+
+ u32 uval;
+ int ret;
+
+retry_private:
+ *hb = queue_lock(q);
+
+ ret = get_futex_value_locked(&uval, uaddr);
+
+ if (ret) {
+ queue_unlock(*hb);
+
+ ret = get_user(uval, uaddr);
+ if (ret)
+ return ret;
+
+ if (!(flags & FLAGS_SHARED))
+ goto retry_private;
+
+ return 1;
+ }
+
+ if (uval != val) {
+ queue_unlock(*hb);
+ ret = -EWOULDBLOCK;
+ }
+
+ return ret;
+}
+
/**
* futex_wait_setup() - Prepare to wait on a futex
* @uaddr: the futex userspace address
@@ -2651,7 +2685,6 @@ static void futex_wait_queue_me(struct futex_hash_bucket *hb, struct futex_q *q,
static int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags,
struct futex_q *q, struct futex_hash_bucket **hb)
{
- u32 uval;
int ret;
/*
@@ -2672,38 +2705,163 @@ static int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags,
* absorb a wakeup if *uaddr does not match the desired values
* while the syscall executes.
*/
-retry:
- ret = get_futex_key(uaddr, flags & FLAGS_SHARED, &q->key, FUTEX_READ);
- if (unlikely(ret != 0))
- return ret;
+ do {
+ ret = get_futex_key(uaddr, flags & FLAGS_SHARED,
+ &q->key, FUTEX_READ);
+ if (unlikely(ret != 0))
+ return ret;
-retry_private:
- *hb = queue_lock(q);
+ ret = __futex_wait_setup(uaddr, val, flags, q, hb);
- ret = get_futex_value_locked(&uval, uaddr);
+ /* Drop key reference if retry or error. */
+ if (ret)
+ put_futex_key(&q->key);
+ } while (ret > 0);
- if (ret) {
- queue_unlock(*hb);
+ return ret;
+}
- ret = get_user(uval, uaddr);
- if (ret)
+static int do_futex_wait_multiple(struct futex_wait_block *wb,
+ u32 count, unsigned int flags,
+ ktime_t *abs_time)
+{
+
+ struct hrtimer_sleeper timeout, *to;
+ struct futex_hash_bucket *hb;
+ struct futex_q *qs = NULL;
+ int ret;
+ int i;
+
+ qs = kcalloc(count, sizeof(struct futex_q), GFP_KERNEL);
+ if (!qs)
+ return -ENOMEM;
+
+ to = futex_setup_timer(abs_time, &timeout, flags,
+ current->timer_slack_ns);
+ retry:
+ for (i = 0; i < count; i++) {
+ qs[i].key = FUTEX_KEY_INIT;
+ qs[i].bitset = wb[i].bitset;
+
+ ret = get_futex_key(wb[i].uaddr, flags & FLAGS_SHARED,
+ &qs[i].key, FUTEX_READ);
+ if (unlikely(ret != 0)) {
+ for (--i; i >= 0; i--)
+ put_futex_key(&qs[i].key);
goto out;
+ }
+ }
- if (!(flags & FLAGS_SHARED))
- goto retry_private;
+ set_current_state(TASK_INTERRUPTIBLE);
- put_futex_key(&q->key);
+ for (i = 0; i < count; i++) {
+ ret = __futex_wait_setup(wb[i].uaddr, wb[i].val,
+ flags, &qs[i], &hb);
+ if (ret) {
+ /* Drop the failed key directly. keys 0..(i-1)
+ * will be put by unqueue_me.
+ */
+ put_futex_key(&qs[i].key);
+
+ /* Undo the partial work we did. */
+ for (--i; i >= 0; i--)
+ unqueue_me(&qs[i]);
+
+ __set_current_state(TASK_RUNNING);
+ if (ret > 0)
+ goto retry;
+ goto out;
+ }
+
+ /* We can't hold to the bucket lock when dealing with
+ * the next futex. Queue ourselves now so we can unlock
+ * it before moving on.
+ */
+ queue_me(&qs[i], hb);
+ }
+
+ if (to)
+ hrtimer_start_expires(&to->timer, HRTIMER_MODE_ABS);
+
+ /* There is no easy to way to check if we are wake already on
+ * multiple futexes without waking through each one of them. So
+ * just sleep and let the scheduler handle it.
+ */
+ if (!to || to->task)
+ freezable_schedule();
+
+ __set_current_state(TASK_RUNNING);
+
+ ret = -ETIMEDOUT;
+ /* If we were woken (and unqueued), we succeeded. */
+ for (i = 0; i < count; i++)
+ if (!unqueue_me(&qs[i]))
+ ret = i;
+
+ /* Succeed wakeup */
+ if (ret >= 0)
+ goto out;
+
+ /* Woken by triggered timeout */
+ if (to && !to->task)
+ goto out;
+
+ /*
+ * We expect signal_pending(current), but we might be the
+ * victim of a spurious wakeup as well.
+ */
+ if (!signal_pending(current))
goto retry;
+
+ ret = -ERESTARTSYS;
+ if (!abs_time)
+ goto out;
+
+ ret = -ERESTART_RESTARTBLOCK;
+ out:
+ if (to) {
+ hrtimer_cancel(&to->timer);
+ destroy_hrtimer_on_stack(&to->timer);
}
- if (uval != val) {
- queue_unlock(*hb);
- ret = -EWOULDBLOCK;
+ kfree(qs);
+ return ret;
+}
+
+static int futex_wait_multiple(u32 __user *uaddr, unsigned int flags,
+ u32 count, ktime_t *abs_time)
+{
+ struct futex_wait_block *wb;
+ struct restart_block *restart;
+ int ret;
+
+ if (!count)
+ return -EINVAL;
+
+ wb = kcalloc(count, sizeof(struct futex_wait_block), GFP_KERNEL);
+ if (!wb)
+ return -ENOMEM;
+
+ if (copy_from_user(wb, uaddr,
+ count * sizeof(struct futex_wait_block))) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ ret = do_futex_wait_multiple(wb, count, flags, abs_time);
+
+ if (ret == -ERESTART_RESTARTBLOCK) {
+ restart = ¤t->restart_block;
+ restart->fn = futex_wait_restart;
+ restart->futex.uaddr = uaddr;
+ restart->futex.val = count;
+ restart->futex.time = *abs_time;
+ restart->futex.flags = (flags | FLAGS_HAS_TIMEOUT |
+ FLAGS_WAKE_MULTIPLE);
}
out:
- if (ret)
- put_futex_key(&q->key);
+ kfree(wb);
return ret;
}
@@ -2784,6 +2942,10 @@ static long futex_wait_restart(struct restart_block *restart)
}
restart->fn = do_no_restart_syscall;
+ if (restart->futex.flags & FLAGS_WAKE_MULTIPLE)
+ return (long)futex_wait_multiple(uaddr, restart->futex.flags,
+ restart->futex.val, tp);
+
return (long)futex_wait(uaddr, restart->futex.flags,
restart->futex.val, tp, restart->futex.bitset);
}
@@ -3667,6 +3829,8 @@ long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout,
uaddr2);
case FUTEX_CMP_REQUEUE_PI:
return futex_requeue(uaddr, flags, uaddr2, val, val2, &val3, 1);
+ case FUTEX_WAIT_MULTIPLE:
+ return futex_wait_multiple(uaddr, flags, val, timeout);
}
return -ENOSYS;
}
@@ -3683,7 +3847,8 @@ SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI ||
cmd == FUTEX_WAIT_BITSET ||
- cmd == FUTEX_WAIT_REQUEUE_PI)) {
+ cmd == FUTEX_WAIT_REQUEUE_PI ||
+ cmd == FUTEX_WAIT_MULTIPLE)) {
if (unlikely(should_fail_futex(!(op & FUTEX_PRIVATE_FLAG))))
return -EFAULT;
if (get_timespec64(&ts, utime))
@@ -3692,7 +3857,7 @@ SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
return -EINVAL;
t = timespec64_to_ktime(ts);
- if (cmd == FUTEX_WAIT)
+ if (cmd == FUTEX_WAIT || cmd == FUTEX_WAIT_MULTIPLE)
t = ktime_add_safe(ktime_get(), t);
tp = &t;
}
@@ -3876,14 +4041,15 @@ SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI ||
cmd == FUTEX_WAIT_BITSET ||
- cmd == FUTEX_WAIT_REQUEUE_PI)) {
+ cmd == FUTEX_WAIT_REQUEUE_PI ||
+ cmd == FUTEX_WAIT_MULTIPLE)) {
if (get_old_timespec32(&ts, utime))
return -EFAULT;
if (!timespec64_valid(&ts))
return -EINVAL;
t = timespec64_to_ktime(ts);
- if (cmd == FUTEX_WAIT)
+ if (cmd == FUTEX_WAIT || cmd == FUTEX_WAIT_MULTIPLE)
t = ktime_add_safe(ktime_get(), t);
tp = &t;
}
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 4861cf8e27..739d1c8a81 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -153,7 +153,7 @@ static
struct lock_class lock_classes[MAX_LOCKDEP_KEYS];
static DECLARE_BITMAP(lock_classes_in_use, MAX_LOCKDEP_KEYS);
-static inline struct lock_class *hlock_class(struct held_lock *hlock)
+inline struct lock_class *lockdep_hlock_class(struct held_lock *hlock)
{
unsigned int class_idx = hlock->class_idx;
@@ -174,6 +174,8 @@ static inline struct lock_class *hlock_class(struct held_lock *hlock)
*/
return lock_classes + class_idx;
}
+EXPORT_SYMBOL_GPL(lockdep_hlock_class);
+#define hlock_class(hlock) lockdep_hlock_class(hlock)
#ifdef CONFIG_LOCK_STAT
static DEFINE_PER_CPU(struct lock_class_stats[MAX_LOCKDEP_KEYS], cpu_lock_stats);
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 500f5db0de..a21d6eca3e 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -37,8 +37,13 @@
*
* (default: 6ms * (1 + ilog(ncpus)), units: nanoseconds)
*/
+#ifdef CONFIG_PCK_INTERACTIVE
+unsigned int sysctl_sched_latency = 4000000ULL;
+static unsigned int normalized_sysctl_sched_latency = 4000000ULL;
+#else
unsigned int sysctl_sched_latency = 6000000ULL;
static unsigned int normalized_sysctl_sched_latency = 6000000ULL;
+#endif
/*
* The initial- and re-scaling of tunables is configurable
@@ -58,13 +63,22 @@ enum sched_tunable_scaling sysctl_sched_tunable_scaling = SCHED_TUNABLESCALING_L
*
* (default: 0.75 msec * (1 + ilog(ncpus)), units: nanoseconds)
*/
+#ifdef CONFIG_PCK_INTERACTIVE
+unsigned int sysctl_sched_min_granularity = 400000ULL;
+static unsigned int normalized_sysctl_sched_min_granularity = 400000ULL;
+#else
unsigned int sysctl_sched_min_granularity = 750000ULL;
static unsigned int normalized_sysctl_sched_min_granularity = 750000ULL;
+#endif
/*
* This value is kept at sysctl_sched_latency/sysctl_sched_min_granularity
*/
+#ifdef CONFIG_PCK_INTERACTIVE
+static unsigned int sched_nr_latency = 10;
+#else
static unsigned int sched_nr_latency = 8;
+#endif
/*
* After fork, child runs first. If set to 0 (default) then
@@ -81,10 +95,17 @@ unsigned int sysctl_sched_child_runs_first __read_mostly;
*
* (default: 1 msec * (1 + ilog(ncpus)), units: nanoseconds)
*/
+#ifdef CONFIG_PCK_INTERACTIVE
+unsigned int sysctl_sched_wakeup_granularity = 500000UL;
+static unsigned int normalized_sysctl_sched_wakeup_granularity = 500000UL;
+
+const_debug unsigned int sysctl_sched_migration_cost = 250000UL;
+#else
unsigned int sysctl_sched_wakeup_granularity = 1000000UL;
static unsigned int normalized_sysctl_sched_wakeup_granularity = 1000000UL;
const_debug unsigned int sysctl_sched_migration_cost = 500000UL;
+#endif
#ifdef CONFIG_SMP
/*
@@ -115,8 +136,12 @@ static unsigned int capacity_margin = 1280;
*
* (default: 5 msec, units: microseconds)
*/
+#ifdef CONFIG_PCK_INTERACTIVE
+unsigned int sysctl_sched_cfs_bandwidth_slice = 3000UL;
+#else
unsigned int sysctl_sched_cfs_bandwidth_slice = 5000UL;
#endif
+#endif
static inline void update_load_add(struct load_weight *lw, unsigned long inc)
{
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 078950d960..baead3605b 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -110,6 +110,9 @@ extern int core_uses_pid;
extern char core_pattern[];
extern unsigned int core_pipe_limit;
#endif
+#ifdef CONFIG_USER_NS
+extern int unprivileged_userns_clone;
+#endif
extern int pid_max;
extern int pid_max_min, pid_max_max;
extern int percpu_pagelist_fraction;
@@ -545,6 +548,15 @@ static struct ctl_table kern_table[] = {
.proc_handler = proc_dointvec,
},
#endif
+#ifdef CONFIG_USER_NS
+ {
+ .procname = "unprivileged_userns_clone",
+ .data = &unprivileged_userns_clone,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif
#ifdef CONFIG_PROC_SYSCTL
{
.procname = "tainted",
diff --git a/kernel/task_work.c b/kernel/task_work.c
index 0fef395662..83fb1ecfc3 100644
--- a/kernel/task_work.c
+++ b/kernel/task_work.c
@@ -116,3 +116,4 @@ void task_work_run(void)
} while (work);
}
}
+EXPORT_SYMBOL_GPL(task_work_run);
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index 8eadadc478..c36ecd1956 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -21,6 +21,13 @@
#include <linux/bsearch.h>
#include <linux/sort.h>
+/* sysctl */
+#ifdef CONFIG_USER_NS_UNPRIVILEGED
+int unprivileged_userns_clone = 1;
+#else
+int unprivileged_userns_clone;
+#endif
+
static struct kmem_cache *user_ns_cachep __read_mostly;
static DEFINE_MUTEX(userns_state_mutex);
diff --git a/mm/Kconfig b/mm/Kconfig
index 56cec636a1..45f0974baf 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -530,8 +530,10 @@ config MEM_SOFT_DIRTY
config ZSWAP
bool "Compressed cache for swap pages (EXPERIMENTAL)"
depends on FRONTSWAP && CRYPTO=y
- select CRYPTO_LZO
+ select CRYPTO_LZO if !PCK_INTERACTIVE
select ZPOOL
+ select CRYPTO_LZ4 if PCK_INTERACTIVE
+ select Z3FOLD if PCK_INTERACTIVE
help
A lightweight compressed cache for swap pages. It takes
pages that are in the process of being swapped out and attempts to
diff --git a/mm/Makefile b/mm/Makefile
index d0b295c3b7..6156cd3d1a 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -39,7 +39,7 @@ obj-y := filemap.o mempool.o oom_kill.o fadvise.o \
mm_init.o mmu_context.o percpu.o slab_common.o \
compaction.o vmacache.o \
interval_tree.o list_lru.o workingset.o \
- debug.o gup.o $(mmu-y)
+ prfile.o debug.o gup.o $(mmu-y)
# Give 'page_alloc' its own module-parameter namespace
page-alloc-y := page_alloc.o
diff --git a/mm/filemap.c b/mm/filemap.c
index d0cf700bf2..5cac93e7bf 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2721,7 +2721,7 @@ vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf)
vm_fault_t ret = VM_FAULT_LOCKED;
sb_start_pagefault(inode->i_sb);
- file_update_time(vmf->vma->vm_file);
+ vma_file_update_time(vmf->vma);
lock_page(page);
if (page->mapping != inode->i_mapping) {
unlock_page(page);
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index de1f15969e..87718af5ca 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -53,7 +53,11 @@ unsigned long transparent_hugepage_flags __read_mostly =
#ifdef CONFIG_TRANSPARENT_HUGEPAGE_MADVISE
(1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG)|
#endif
+#ifdef CONFIG_PCK_INTERACTIVE
+ (1<<TRANSPARENT_HUGEPAGE_DEFRAG_KSWAPD_OR_MADV_FLAG)|
+#else
(1<<TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG)|
+#endif
(1<<TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG)|
(1<<TRANSPARENT_HUGEPAGE_USE_ZERO_PAGE_FLAG);
diff --git a/mm/mmap.c b/mm/mmap.c
index 7e8c3e8ae7..d8a903f612 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -182,7 +182,7 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma)
if (vma->vm_ops && vma->vm_ops->close)
vma->vm_ops->close(vma);
if (vma->vm_file)
- fput(vma->vm_file);
+ vma_fput(vma);
mpol_put(vma_policy(vma));
vm_area_free(vma);
return next;
@@ -931,7 +931,7 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start,
if (remove_next) {
if (file) {
uprobe_munmap(next, next->vm_start, next->vm_end);
- fput(file);
+ vma_fput(vma);
}
if (next->anon_vma)
anon_vma_merge(vma, next);
@@ -1847,8 +1847,8 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
return addr;
unmap_and_free_vma:
+ vma_fput(vma);
vma->vm_file = NULL;
- fput(file);
/* Undo any partial mapping done by a device driver. */
unmap_region(mm, vma, prev, vma->vm_start, vma->vm_end);
@@ -2680,7 +2680,7 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
goto out_free_mpol;
if (new->vm_file)
- get_file(new->vm_file);
+ vma_get_file(new);
if (new->vm_ops && new->vm_ops->open)
new->vm_ops->open(new);
@@ -2699,7 +2699,7 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
if (new->vm_ops && new->vm_ops->close)
new->vm_ops->close(new);
if (new->vm_file)
- fput(new->vm_file);
+ vma_fput(new);
unlink_anon_vmas(new);
out_free_mpol:
mpol_put(vma_policy(new));
@@ -2890,7 +2890,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
struct vm_area_struct *vma;
unsigned long populate = 0;
unsigned long ret = -EINVAL;
- struct file *file;
+ struct file *file, *prfile;
pr_warn_once("%s (%d) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.rst.\n",
current->comm, current->pid);
@@ -2965,10 +2965,27 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
}
}
- file = get_file(vma->vm_file);
+ vma_get_file(vma);
+ file = vma->vm_file;
+ prfile = vma->vm_prfile;
ret = do_mmap_pgoff(vma->vm_file, start, size,
prot, flags, pgoff, &populate, NULL);
+ if (!IS_ERR_VALUE(ret) && file && prfile) {
+ struct vm_area_struct *new_vma;
+
+ new_vma = find_vma(mm, ret);
+ if (!new_vma->vm_prfile)
+ new_vma->vm_prfile = prfile;
+ if (new_vma != vma)
+ get_file(prfile);
+ }
+ /*
+ * two fput()s instead of vma_fput(vma),
+ * coz vma may not be available anymore.
+ */
fput(file);
+ if (prfile)
+ fput(prfile);
out:
up_write(&mm->mmap_sem);
if (populate)
@@ -3258,7 +3275,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
if (anon_vma_clone(new_vma, vma))
goto out_free_mempol;
if (new_vma->vm_file)
- get_file(new_vma->vm_file);
+ vma_get_file(new_vma);
if (new_vma->vm_ops && new_vma->vm_ops->open)
new_vma->vm_ops->open(new_vma);
vma_link(mm, new_vma, prev, rb_link, rb_parent);
diff --git a/mm/nommu.c b/mm/nommu.c
index fed1b6e9c8..0d43b248ed 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -552,7 +552,7 @@ static void __put_nommu_region(struct vm_region *region)
up_write(&nommu_region_sem);
if (region->vm_file)
- fput(region->vm_file);
+ vmr_fput(region);
/* IO memory and memory shared directly out of the pagecache
* from ramfs/tmpfs mustn't be released here */
@@ -690,7 +690,7 @@ static void delete_vma(struct mm_struct *mm, struct vm_area_struct *vma)
if (vma->vm_ops && vma->vm_ops->close)
vma->vm_ops->close(vma);
if (vma->vm_file)
- fput(vma->vm_file);
+ vma_fput(vma);
put_nommu_region(vma->vm_region);
vm_area_free(vma);
}
@@ -1213,7 +1213,7 @@ unsigned long do_mmap(struct file *file,
goto error_just_free;
}
}
- fput(region->vm_file);
+ vmr_fput(region);
kmem_cache_free(vm_region_jar, region);
region = pregion;
result = start;
@@ -1290,10 +1290,10 @@ unsigned long do_mmap(struct file *file,
up_write(&nommu_region_sem);
error:
if (region->vm_file)
- fput(region->vm_file);
+ vmr_fput(region);
kmem_cache_free(vm_region_jar, region);
if (vma->vm_file)
- fput(vma->vm_file);
+ vma_fput(vma);
vm_area_free(vma);
return ret;
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 1804f64ff4..4bc7896ac6 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -71,7 +71,11 @@ static long ratelimit_pages = 32;
/*
* Start background writeback (via writeback threads) at this percentage
*/
+#ifdef CONFIG_PCK_INTERACTIVE
+int dirty_background_ratio = 20;
+#else
int dirty_background_ratio = 10;
+#endif
/*
* dirty_background_bytes starts at 0 (disabled) so that it is a function of
@@ -88,7 +92,11 @@ int vm_highmem_is_dirtyable;
/*
* The generator of dirty data starts writeback at this percentage
*/
+#ifdef CONFIG_PCK_INTERACTIVE
+int vm_dirty_ratio = 50;
+#else
int vm_dirty_ratio = 20;
+#endif
/*
* vm_dirty_bytes starts at 0 (disabled) so that it is a function of
diff --git a/mm/prfile.c b/mm/prfile.c
new file mode 100644
index 0000000000..024cdcfae1
--- /dev/null
+++ b/mm/prfile.c
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Mainly for aufs which mmap(2) different file and wants to print different
+ * path in /proc/PID/maps.
+ * Call these functions via macros defined in linux/mm.h.
+ *
+ * See Documentation/filesystems/aufs/design/06mmap.txt
+ *
+ * Copyright (c) 2014-2019 Junjro R. Okajima
+ * Copyright (c) 2014 Ian Campbell
+ */
+
+#include <linux/mm.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+
+/* #define PRFILE_TRACE */
+static inline void prfile_trace(struct file *f, struct file *pr,
+ const char func[], int line, const char func2[])
+{
+#ifdef PRFILE_TRACE
+ if (pr)
+ pr_info("%s:%d: %s, %pD2\n", func, line, func2, f);
+#endif
+}
+
+void vma_do_file_update_time(struct vm_area_struct *vma, const char func[],
+ int line)
+{
+ struct file *f = vma->vm_file, *pr = vma->vm_prfile;
+
+ prfile_trace(f, pr, func, line, __func__);
+ file_update_time(f);
+ if (f && pr)
+ file_update_time(pr);
+}
+
+struct file *vma_do_pr_or_file(struct vm_area_struct *vma, const char func[],
+ int line)
+{
+ struct file *f = vma->vm_file, *pr = vma->vm_prfile;
+
+ prfile_trace(f, pr, func, line, __func__);
+ return (f && pr) ? pr : f;
+}
+
+void vma_do_get_file(struct vm_area_struct *vma, const char func[], int line)
+{
+ struct file *f = vma->vm_file, *pr = vma->vm_prfile;
+
+ prfile_trace(f, pr, func, line, __func__);
+ get_file(f);
+ if (f && pr)
+ get_file(pr);
+}
+
+void vma_do_fput(struct vm_area_struct *vma, const char func[], int line)
+{
+ struct file *f = vma->vm_file, *pr = vma->vm_prfile;
+
+ prfile_trace(f, pr, func, line, __func__);
+ fput(f);
+ if (f && pr)
+ fput(pr);
+}
+
+#ifndef CONFIG_MMU
+struct file *vmr_do_pr_or_file(struct vm_region *region, const char func[],
+ int line)
+{
+ struct file *f = region->vm_file, *pr = region->vm_prfile;
+
+ prfile_trace(f, pr, func, line, __func__);
+ return (f && pr) ? pr : f;
+}
+
+void vmr_do_fput(struct vm_region *region, const char func[], int line)
+{
+ struct file *f = region->vm_file, *pr = region->vm_prfile;
+
+ prfile_trace(f, pr, func, line, __func__);
+ fput(f);
+ if (f && pr)
+ fput(pr);
+}
+#endif /* !CONFIG_MMU */
diff --git a/mm/zswap.c b/mm/zswap.c
index 0e22744a76..c161b927ff 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -72,7 +72,11 @@ static u64 zswap_duplicate_entry;
#define ZSWAP_PARAM_UNSET ""
/* Enable/disable zswap (disabled by default) */
+#ifdef CONFIG_PCK_INTERACTIVE
+static bool zswap_enabled = true;
+#else
static bool zswap_enabled;
+#endif
static int zswap_enabled_param_set(const char *,
const struct kernel_param *);
static struct kernel_param_ops zswap_enabled_param_ops = {
@@ -82,7 +86,11 @@ static struct kernel_param_ops zswap_enabled_param_ops = {
module_param_cb(enabled, &zswap_enabled_param_ops, &zswap_enabled, 0644);
/* Crypto compressor to use */
+#ifdef CONFIG_PCK_INTERACTIVE
+#define ZSWAP_COMPRESSOR_DEFAULT "lz4"
+#else
#define ZSWAP_COMPRESSOR_DEFAULT "lzo"
+#endif
static char *zswap_compressor = ZSWAP_COMPRESSOR_DEFAULT;
static int zswap_compressor_param_set(const char *,
const struct kernel_param *);
@@ -95,7 +103,11 @@ module_param_cb(compressor, &zswap_compressor_param_ops,
&zswap_compressor, 0644);
/* Compressed storage zpool to use */
+#ifdef CONFIG_PCK_INTERACTIVE
+#define ZSWAP_ZPOOL_DEFAULT "z3fold"
+#else
#define ZSWAP_ZPOOL_DEFAULT "zbud"
+#endif
static char *zswap_zpool_type = ZSWAP_ZPOOL_DEFAULT;
static int zswap_zpool_param_set(const char *, const struct kernel_param *);
static struct kernel_param_ops zswap_zpool_param_ops = {
diff --git a/net/can/Kconfig b/net/can/Kconfig
index 0f9fe846dd..6d53027d38 100644
--- a/net/can/Kconfig
+++ b/net/can/Kconfig
@@ -52,6 +52,16 @@ config CAN_GW
They can be modified with AND/OR/XOR/SET operations as configured
by the netlink configuration interface known e.g. from iptables.
+config CAN_ISOTP
+ tristate "ISO 15765-2:2016 CAN transport protocol"
+ default y
+ ---help---
+ ISO 15765-2 CAN transport protocol for protocol family CAN
+
+ This implementation is already widely used in automotive use-cases, e.g.
+ for UDS based OBD diagnosis. Although some small adaptions may be applied
+ to make it ready for Linux Mainline. Feedback is welcome.
+
source "drivers/net/can/Kconfig"
endif
diff --git a/net/can/Makefile b/net/can/Makefile
index 1242bbbfe5..fde6769659 100644
--- a/net/can/Makefile
+++ b/net/can/Makefile
@@ -15,3 +15,6 @@ can-bcm-y := bcm.o
obj-$(CONFIG_CAN_GW) += can-gw.o
can-gw-y := gw.o
+
+obj-$(CONFIG_CAN_ISOTP) += can-isotp.o
+can-isotp-y := isotp.o
diff --git a/net/can/isotp.c b/net/can/isotp.c
new file mode 100644
index 0000000000..02462b959f
--- /dev/null
+++ b/net/can/isotp.c
@@ -0,0 +1,1533 @@
+/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
+/*
+ * isotp.c - ISO 15765-2 CAN transport protocol for protocol family CAN
+ *
+ * WARNING: This is ALPHA code for discussions and first tests that should
+ * not be used in production environments.
+ *
+ * In the discussion the Socket-API to the userspace or the ISO-TP socket
+ * options or the return values we may change! Current behaviour:
+ *
+ * - no ISO-TP specific return values are provided to the userspace
+ * - when a transfer (tx) is on the run the next write() blocks until it's done
+ * - no support for sending wait frames to the data source in the rx path
+ *
+ * Copyright (c) 2017 Volkswagen Group Electronic Research
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Volkswagen nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * Alternatively, provided that this notice is retained in full, this
+ * software may be distributed under the terms of the GNU General
+ * Public License ("GPL") version 2, in which case the provisions of the
+ * GPL apply INSTEAD OF those given above.
+ *
+ * The provided data structures and external interfaces from this code
+ * are not restricted to be used by modules with a GPL compatible license.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * Send feedback to <linux-can@vger.kernel.org>
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/hrtimer.h>
+#include <linux/wait.h>
+#include <linux/uio.h>
+#include <linux/net.h>
+#include <linux/netdevice.h>
+#include <linux/socket.h>
+#include <linux/if_arp.h>
+#include <linux/skbuff.h>
+#include <linux/can.h>
+#include <linux/can/core.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)
+#include <linux/can/skb.h>
+#define CAN_SKBRES sizeof(struct can_skb_priv)
+#else
+#define CAN_SKBRES 0
+#endif
+#include <linux/can/isotp.h>
+#include <net/sock.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
+#include <net/net_namespace.h>
+#endif
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
+#include "compat.h"
+#endif
+
+#define CAN_ISOTP_VERSION "20181217"
+static __initdata const char banner[] =
+ KERN_INFO "can: isotp protocol (rev " CAN_ISOTP_VERSION " alpha)\n";
+
+MODULE_DESCRIPTION("PF_CAN isotp 15765-2:2016 protocol");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("Oliver Hartkopp <socketcan@hartkopp.net>");
+MODULE_ALIAS("can-proto-6");
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
+#error This modules needs hrtimers (available since Kernel 2.6.22)
+#endif
+
+#define DBG(fmt, args...) (printk( KERN_DEBUG "can-isotp: %s: " fmt, \
+ __func__, ##args))
+#undef DBG
+#define DBG(fmt, args...)
+
+#define SINGLE_MASK(id) ((id & CAN_EFF_FLAG) ? \
+ (CAN_EFF_MASK | CAN_EFF_FLAG | CAN_RTR_FLAG) : \
+ (CAN_SFF_MASK | CAN_EFF_FLAG | CAN_RTR_FLAG))
+
+/*
+ ISO 15765-2:2016 supports more than 4095 byte per ISO PDU as the FF_DL can
+ take full 32 bit values (4 Gbyte). We would need some good concept to handle
+ this between user space and kernel space. For now increase the static buffer
+ to something about 8 kbyte to be able to test this new functionality.
+*/
+#define MAX_MSG_LENGTH 8200
+
+/* N_PCI type values in bits 7-4 of N_PCI bytes */
+#define N_PCI_SF 0x00 /* single frame */
+#define N_PCI_FF 0x10 /* first frame */
+#define N_PCI_CF 0x20 /* consecutive frame */
+#define N_PCI_FC 0x30 /* flow control */
+
+#define N_PCI_SZ 1 /* size of the PCI byte #1 */
+#define SF_PCI_SZ4 1 /* size of SingleFrame PCI including 4 bit SF_DL */
+#define SF_PCI_SZ8 2 /* size of SingleFrame PCI including 8 bit SF_DL */
+#define FF_PCI_SZ12 2 /* size of FirstFrame PCI including 12 bit FF_DL */
+#define FF_PCI_SZ32 6 /* size of FirstFrame PCI including 32 bit FF_DL */
+#define FC_CONTENT_SZ 3 /* flow control content size in byte (FS/BS/STmin) */
+
+#define ISOTP_CHECK_PADDING (CAN_ISOTP_CHK_PAD_LEN | CAN_ISOTP_CHK_PAD_DATA)
+
+/* Flow Status given in FC frame */
+#define ISOTP_FC_CTS 0 /* clear to send */
+#define ISOTP_FC_WT 1 /* wait */
+#define ISOTP_FC_OVFLW 2 /* overflow */
+
+enum {
+ ISOTP_IDLE = 0,
+ ISOTP_WAIT_FIRST_FC,
+ ISOTP_WAIT_FC,
+ ISOTP_WAIT_DATA,
+ ISOTP_SENDING
+};
+
+struct tpcon {
+ int idx;
+ int len;
+ u8 state;
+ u8 bs;
+ u8 sn;
+ u8 ll_dl;
+ u8 buf[MAX_MSG_LENGTH+1];
+};
+
+struct isotp_sock {
+ struct sock sk;
+ int bound;
+ int ifindex;
+ canid_t txid;
+ canid_t rxid;
+ ktime_t tx_gap;
+ ktime_t lastrxcf_tstamp;
+ struct hrtimer rxtimer, txtimer;
+ struct tasklet_struct txtsklet;
+ struct can_isotp_options opt;
+ struct can_isotp_fc_options rxfc, txfc;
+ struct can_isotp_ll_options ll;
+ __u32 force_tx_stmin;
+ __u32 force_rx_stmin;
+ struct tpcon rx, tx;
+ struct notifier_block notifier;
+ wait_queue_head_t wait;
+};
+
+static inline struct isotp_sock *isotp_sk(const struct sock *sk)
+{
+ return (struct isotp_sock *)sk;
+}
+
+static enum hrtimer_restart isotp_rx_timer_handler(struct hrtimer *hrtimer)
+{
+ struct isotp_sock *so = container_of(hrtimer, struct isotp_sock,
+ rxtimer);
+ if (so->rx.state == ISOTP_WAIT_DATA) {
+ DBG("we did not get new data frames in time.\n");
+
+ /* reset tx state */
+ so->rx.state = ISOTP_IDLE;
+ }
+
+ return HRTIMER_NORESTART;
+}
+
+static void isotp_skb_reserve(struct sk_buff *skb, struct net_device *dev)
+{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)
+ can_skb_reserve(skb);
+ can_skb_prv(skb)->ifindex = dev->ifindex;
+#endif
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,1,5)
+ can_skb_prv(skb)->skbcnt = 0;
+#endif
+}
+
+static void isotp_skb_destructor(struct sk_buff *skb)
+{
+ sock_put(skb->sk);
+}
+
+static inline void isotp_skb_set_owner(struct sk_buff *skb, struct sock *sk)
+{
+ if (sk) {
+ sock_hold(sk);
+ skb->destructor = isotp_skb_destructor;
+ skb->sk = sk;
+ }
+}
+
+static int isotp_send_fc(struct sock *sk, int ae, u8 flowstatus)
+{
+ struct net_device *dev;
+ struct sk_buff *nskb;
+ struct canfd_frame *ncf;
+ struct isotp_sock *so = isotp_sk(sk);
+
+ nskb = alloc_skb(so->ll.mtu + CAN_SKBRES, gfp_any());
+ if (!nskb)
+ return 1;
+
+ dev = dev_get_by_index(sock_net(sk), so->ifindex);
+ if (!dev) {
+ kfree_skb(nskb);
+ return 1;
+ }
+ isotp_skb_reserve(nskb, dev);
+ nskb->dev = dev;
+ isotp_skb_set_owner(nskb, sk);
+ ncf = (struct canfd_frame *) nskb->data;
+ skb_put(nskb, so->ll.mtu);
+
+ /* create & send flow control reply */
+ ncf->can_id = so->txid;
+
+ if (so->opt.flags & CAN_ISOTP_TX_PADDING) {
+ memset(ncf->data, so->opt.txpad_content, CAN_MAX_DLEN);
+ ncf->len = CAN_MAX_DLEN;
+ } else
+ ncf->len = ae + FC_CONTENT_SZ;
+
+ ncf->data[ae] = N_PCI_FC | flowstatus;
+ ncf->data[ae + 1] = so->rxfc.bs;
+ ncf->data[ae + 2] = so->rxfc.stmin;
+
+ if (ae)
+ ncf->data[0] = so->opt.ext_address;
+
+ if (so->ll.mtu == CANFD_MTU)
+ ncf->flags = so->ll.tx_flags;
+
+ can_send(nskb, 1);
+ dev_put(dev);
+
+ /* reset blocksize counter */
+ so->rx.bs = 0;
+
+ /* reset last CF frame rx timestamp for rx stmin enforcement */
+ so->lastrxcf_tstamp = ktime_set(0,0);
+
+ /* start rx timeout watchdog */
+ hrtimer_start(&so->rxtimer, ktime_set(1,0), HRTIMER_MODE_REL);
+ return 0;
+}
+
+static void isotp_rcv_skb(struct sk_buff *skb, struct sock *sk)
+{
+ struct sockaddr_can *addr = (struct sockaddr_can *)skb->cb;
+
+ BUILD_BUG_ON(sizeof(skb->cb) < sizeof(struct sockaddr_can));
+
+ memset(addr, 0, sizeof(*addr));
+ addr->can_family = AF_CAN;
+ addr->can_ifindex = skb->dev->ifindex;
+
+ if (sock_queue_rcv_skb(sk, skb) < 0)
+ kfree_skb(skb);
+}
+
+static u8 padlen(u8 datalen)
+{
+ const u8 plen[] = {8, 8, 8, 8, 8, 8, 8, 8, 8, /* 0 - 8 */
+ 12, 12, 12, 12, /* 9 - 12 */
+ 16, 16, 16, 16, /* 13 - 16 */
+ 20, 20, 20, 20, /* 17 - 20 */
+ 24, 24, 24, 24, /* 21 - 24 */
+ 32, 32, 32, 32, 32, 32, 32, 32, /* 25 - 32 */
+ 48, 48, 48, 48, 48, 48, 48, 48, /* 33 - 40 */
+ 48, 48, 48, 48, 48, 48, 48, 48}; /* 41 - 48 */
+
+ if (datalen > 48)
+ return 64;
+
+ return plen[datalen];
+}
+
+/* check for length optimization and return 1/true when the check fails */
+static int check_optimized(struct canfd_frame *cf, int start_index)
+{
+ /*
+ * for CAN_DL <= 8 the start_index is equal to the CAN_DL as the
+ * padding would start at this point. E.g. if the padding would
+ * start at cf.data[7] cf->len has to be 7 to be optimal.
+ * Note: The data[] index starts with zero.
+ */
+ if (cf->len <= CAN_MAX_DLEN)
+ return (cf->len != start_index);
+
+ /*
+ * This relation is also valid in the non-linear DLC range, where
+ * we need to take care of the minimal next possible CAN_DL.
+ * The correct check would be (padlen(cf->len) != padlen(start_index)).
+ * But as cf->len can only take discrete values from 12, .., 64 at this
+ * point the padlen(cf->len) is always equal to cf->len.
+ */
+ return (cf->len != padlen(start_index));
+}
+
+/* check padding and return 1/true when the check fails */
+static int check_pad(struct isotp_sock *so, struct canfd_frame *cf,
+ int start_index, __u8 content)
+{
+ int i;
+
+ /* no RX_PADDING value => check length of optimized frame length */
+ if (!(so->opt.flags & CAN_ISOTP_RX_PADDING)) {
+
+ if (so->opt.flags & CAN_ISOTP_CHK_PAD_LEN)
+ return check_optimized(cf, start_index);
+
+ /* no valid test against empty value => ignore frame */
+ return 1;
+ }
+
+ /* check datalength of correctly padded CAN frame */
+ if ((so->opt.flags & CAN_ISOTP_CHK_PAD_LEN) &&
+ cf->len != padlen(cf->len))
+ return 1;
+
+ /* check padding content */
+ if (so->opt.flags & CAN_ISOTP_CHK_PAD_DATA) {
+ for (i = start_index; i < cf->len; i++)
+ if (cf->data[i] != content)
+ return 1;
+ }
+ return 0;
+}
+
+static int isotp_rcv_fc(struct isotp_sock *so, struct canfd_frame *cf, int ae)
+{
+ if (so->tx.state != ISOTP_WAIT_FC &&
+ so->tx.state != ISOTP_WAIT_FIRST_FC)
+ return 0;
+
+ hrtimer_cancel(&so->txtimer);
+
+ if ((cf->len < ae + FC_CONTENT_SZ) ||
+ ((so->opt.flags & ISOTP_CHECK_PADDING) &&
+ check_pad(so, cf, ae + FC_CONTENT_SZ, so->opt.rxpad_content))) {
+ so->tx.state = ISOTP_IDLE;
+ wake_up_interruptible(&so->wait);
+ return 1;
+ }
+
+ /* get communication parameters only from the first FC frame */
+ if (so->tx.state == ISOTP_WAIT_FIRST_FC) {
+
+ so->txfc.bs = cf->data[ae + 1];
+ so->txfc.stmin = cf->data[ae + 2];
+
+ /* fix wrong STmin values according spec */
+ if ((so->txfc.stmin > 0x7F) &&
+ ((so->txfc.stmin < 0xF1) || (so->txfc.stmin > 0xF9)))
+ so->txfc.stmin = 0x7F;
+
+ so->tx_gap = ktime_set(0,0);
+ /* add transmission time for CAN frame N_As */
+ so->tx_gap = ktime_add_ns(so->tx_gap, so->opt.frame_txtime);
+ /* add waiting time for consecutive frames N_Cs */
+ if (so->opt.flags & CAN_ISOTP_FORCE_TXSTMIN)
+ so->tx_gap = ktime_add_ns(so->tx_gap,
+ so->force_tx_stmin);
+ else if (so->txfc.stmin < 0x80)
+ so->tx_gap = ktime_add_ns(so->tx_gap,
+ so->txfc.stmin * 1000000);
+ else
+ so->tx_gap = ktime_add_ns(so->tx_gap,
+ (so->txfc.stmin - 0xF0)
+ * 100000);
+ so->tx.state = ISOTP_WAIT_FC;
+ }
+
+ DBG("FC frame: FS %d, BS %d, STmin 0x%02X, tx_gap %lld\n",
+ cf->data[ae] & 0x0F & 0x0F, so->txfc.bs, so->txfc.stmin,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
+ (long long)so->tx_gap);
+#else
+ (long long)so->tx_gap.tv64);
+#endif
+
+ switch (cf->data[ae] & 0x0F) {
+
+ case ISOTP_FC_CTS:
+ so->tx.bs = 0;
+ so->tx.state = ISOTP_SENDING;
+ DBG("starting txtimer for sending\n");
+ /* start cyclic timer for sending CF frame */
+ hrtimer_start(&so->txtimer, so->tx_gap,
+ HRTIMER_MODE_REL);
+ break;
+
+ case ISOTP_FC_WT:
+ DBG("starting waiting for next FC\n");
+ /* start timer to wait for next FC frame */
+ hrtimer_start(&so->txtimer, ktime_set(1,0),
+ HRTIMER_MODE_REL);
+ break;
+
+ case ISOTP_FC_OVFLW:
+ DBG("overflow in receiver side\n");
+
+ default:
+ /* stop this tx job. TODO: error reporting? */
+ so->tx.state = ISOTP_IDLE;
+ wake_up_interruptible(&so->wait);
+ }
+ return 0;
+}
+
+static int isotp_rcv_sf(struct sock *sk, struct canfd_frame *cf, int pcilen,
+ struct sk_buff *skb, int len)
+{
+ struct isotp_sock *so = isotp_sk(sk);
+ struct sk_buff *nskb;
+
+ hrtimer_cancel(&so->rxtimer);
+ so->rx.state = ISOTP_IDLE;
+
+ if (!len || len > cf->len - pcilen)
+ return 1;
+
+ if ((so->opt.flags & ISOTP_CHECK_PADDING) &&
+ check_pad(so, cf, pcilen + len, so->opt.rxpad_content))
+ return 1;
+
+ nskb = alloc_skb(len, gfp_any());
+ if (!nskb)
+ return 1;
+
+ memcpy(skb_put(nskb, len), &cf->data[pcilen], len);
+
+ nskb->tstamp = skb->tstamp;
+ nskb->dev = skb->dev;
+ isotp_rcv_skb(nskb, sk);
+ return 0;
+}
+
+static int isotp_rcv_ff(struct sock *sk, struct canfd_frame *cf, int ae)
+{
+ struct isotp_sock *so = isotp_sk(sk);
+ int i;
+ int off;
+ int ff_pci_sz;
+
+ hrtimer_cancel(&so->rxtimer);
+ so->rx.state = ISOTP_IDLE;
+
+ /* get the used sender LL_DL from the (first) CAN frame data length */
+ so->rx.ll_dl = padlen(cf->len);
+
+ /* the first frame has to use the entire frame up to LL_DL length */
+ if (cf->len != so->rx.ll_dl)
+ return 1;
+
+ /* get the FF_DL */
+ so->rx.len = (cf->data[ae] & 0x0F) << 8;
+ so->rx.len += cf->data[ae + 1];
+
+ /* Check for FF_DL escape sequence supporting 32 bit PDU length */
+ if (so->rx.len)
+ ff_pci_sz = FF_PCI_SZ12;
+ else {
+ /* FF_DL = 0 => get real length from next 4 bytes */
+ so->rx.len = cf->data[ae + 2] << 24;
+ so->rx.len += cf->data[ae + 3] << 16;
+ so->rx.len += cf->data[ae + 4] << 8;
+ so->rx.len += cf->data[ae + 5];
+ ff_pci_sz = FF_PCI_SZ32;
+ }
+
+ /* take care of a potential SF_DL ESC offset for TX_DL > 8 */
+ off = (so->rx.ll_dl > CAN_MAX_DLEN)? 1:0;
+
+ if (so->rx.len + ae + off + ff_pci_sz < so->rx.ll_dl)
+ return 1;
+
+ if (so->rx.len > MAX_MSG_LENGTH) {
+ /* send FC frame with overflow status */
+ isotp_send_fc(sk, ae, ISOTP_FC_OVFLW);
+ return 1;
+ }
+
+ /* copy the first received data bytes */
+ so->rx.idx = 0;
+ for (i = ae + ff_pci_sz; i < so->rx.ll_dl; i++)
+ so->rx.buf[so->rx.idx++] = cf->data[i];
+
+ /* initial setup for this pdu receiption */
+ so->rx.sn = 1;
+ so->rx.state = ISOTP_WAIT_DATA;
+
+ /* no creation of flow control frames */
+ if (so->opt.flags & CAN_ISOTP_LISTEN_MODE)
+ return 0;
+
+ /* send our first FC frame */
+ isotp_send_fc(sk, ae, ISOTP_FC_CTS);
+ return 0;
+}
+
+static int isotp_rcv_cf(struct sock *sk, struct canfd_frame *cf, int ae,
+ struct sk_buff *skb)
+{
+ struct isotp_sock *so = isotp_sk(sk);
+ struct sk_buff *nskb;
+ int i;
+
+ if (so->rx.state != ISOTP_WAIT_DATA)
+ return 0;
+
+ /* drop if timestamp gap is less than force_rx_stmin nano secs */
+ if (so->opt.flags & CAN_ISOTP_FORCE_RXSTMIN) {
+
+ if (ktime_to_ns(ktime_sub(skb->tstamp, so->lastrxcf_tstamp)) <
+ so->force_rx_stmin)
+ return 0;
+
+ so->lastrxcf_tstamp = skb->tstamp;
+ }
+
+ hrtimer_cancel(&so->rxtimer);
+
+ /* CFs are never longer than the FF */
+ if (cf->len > so->rx.ll_dl)
+ return 1;
+
+ /* CFs have usually the LL_DL length */
+ if (cf->len < so->rx.ll_dl) {
+ /* this is only allowed for the last CF */
+ if (so->rx.len - so->rx.idx > so->rx.ll_dl - ae - N_PCI_SZ)
+ return 1;
+ }
+
+ if ((cf->data[ae] & 0x0F) != so->rx.sn) {
+ DBG("wrong sn %d. expected %d.\n",
+ cf->data[ae] & 0x0F, so->rx.sn);
+ /* some error reporting? */
+ so->rx.state = ISOTP_IDLE;
+ return 1;
+ }
+ so->rx.sn++;
+ so->rx.sn %= 16;
+
+ for (i = ae + N_PCI_SZ; i < cf->len; i++) {
+ so->rx.buf[so->rx.idx++] = cf->data[i];
+ if (so->rx.idx >= so->rx.len)
+ break;
+ }
+
+ if (so->rx.idx >= so->rx.len) {
+
+ /* we are done */
+ so->rx.state = ISOTP_IDLE;
+
+ if ((so->opt.flags & ISOTP_CHECK_PADDING) &&
+ check_pad(so, cf, i+1, so->opt.rxpad_content))
+ return 1;
+
+ nskb = alloc_skb(so->rx.len, gfp_any());
+ if (!nskb)
+ return 1;
+
+ memcpy(skb_put(nskb, so->rx.len), so->rx.buf,
+ so->rx.len);
+
+ nskb->tstamp = skb->tstamp;
+ nskb->dev = skb->dev;
+ isotp_rcv_skb(nskb, sk);
+ return 0;
+ }
+
+ /* no creation of flow control frames */
+ if (so->opt.flags & CAN_ISOTP_LISTEN_MODE)
+ return 0;
+
+ /* perform blocksize handling, if enabled */
+ if (!so->rxfc.bs || ++so->rx.bs < so->rxfc.bs) {
+
+ /* start rx timeout watchdog */
+ hrtimer_start(&so->rxtimer, ktime_set(1,0),
+ HRTIMER_MODE_REL);
+ return 0;
+ }
+
+ /* we reached the specified blocksize so->rxfc.bs */
+ isotp_send_fc(sk, ae, ISOTP_FC_CTS);
+ return 0;
+}
+
+static void isotp_rcv(struct sk_buff *skb, void *data)
+{
+ struct sock *sk = (struct sock *)data;
+ struct isotp_sock *so = isotp_sk(sk);
+ struct canfd_frame *cf;
+ int ae = (so->opt.flags & CAN_ISOTP_EXTEND_ADDR)? 1:0;
+ u8 n_pci_type, sf_dl;
+
+ BUG_ON(skb->len != CAN_MTU && skb->len != CANFD_MTU);
+
+ /*
+ * Strictly receive only frames with the configured MTU size
+ * => clear separation of CAN2.0 / CAN FD transport channels
+ */
+ if (skb->len != so->ll.mtu)
+ return;
+
+ cf = (struct canfd_frame *) skb->data;
+
+ /* if enabled: check receiption of my configured extended address */
+ if (ae && cf->data[0] != so->opt.rx_ext_address)
+ return;
+
+ n_pci_type = cf->data[ae] & 0xF0;
+
+ if (so->opt.flags & CAN_ISOTP_HALF_DUPLEX) {
+ /* check rx/tx path half duplex expectations */
+ if ((so->tx.state != ISOTP_IDLE && n_pci_type != N_PCI_FC) ||
+ (so->rx.state != ISOTP_IDLE && n_pci_type == N_PCI_FC))
+ return;
+ }
+
+ switch (n_pci_type) {
+ case N_PCI_FC:
+ /* tx path: flow control frame containing the FC parameters */
+ isotp_rcv_fc(so, cf, ae);
+ break;
+
+ case N_PCI_SF:
+ /*
+ * rx path: single frame
+ *
+ * As we do not have a rx.ll_dl configuration, we can only test
+ * if the CAN frames payload length matches the LL_DL == 8
+ * requirements - no matter if it's CAN 2.0 or CAN FD
+ */
+
+ /* get the SF_DL from the N_PCI byte */
+ sf_dl = cf->data[ae] & 0x0F;
+
+ if (cf->len <= CAN_MAX_DLEN)
+ isotp_rcv_sf(sk, cf, SF_PCI_SZ4 + ae, skb, sf_dl);
+ else if (skb->len == CANFD_MTU) {
+ /*
+ * We have a CAN FD frame and CAN_DL is greater than 8:
+ * Only frames with the SF_DL == 0 ESC value are valid.
+ *
+ * If so take care of the increased SF PCI size
+ * (SF_PCI_SZ8) to point to the message content behind
+ * the extended SF PCI info and get the real SF_DL
+ * length value from the formerly first data byte.
+ */
+ if (sf_dl == 0)
+ isotp_rcv_sf(sk, cf, SF_PCI_SZ8 + ae, skb,
+ cf->data[SF_PCI_SZ4 + ae]);
+ }
+ break;
+
+ case N_PCI_FF:
+ /* rx path: first frame */
+ isotp_rcv_ff(sk, cf, ae);
+ break;
+
+ case N_PCI_CF:
+ /* rx path: consecutive frame */
+ isotp_rcv_cf(sk, cf, ae, skb);
+ break;
+
+ }
+}
+
+static void isotp_fill_dataframe(struct canfd_frame *cf, struct isotp_sock *so,
+ int ae, int off)
+{
+ int pcilen = N_PCI_SZ + ae + off;
+ int space = so->tx.ll_dl - pcilen;
+ int num = min_t(int, so->tx.len - so->tx.idx, space);
+ int i;
+
+ cf->can_id = so->txid;
+ cf->len = num + pcilen;
+
+ if (num < space) {
+ if (so->opt.flags & CAN_ISOTP_TX_PADDING) {
+ /* user requested padding */
+ cf->len = padlen(cf->len);
+ memset(cf->data, so->opt.txpad_content, cf->len);
+ } else if (cf->len > CAN_MAX_DLEN) {
+ /* mandatory padding for CAN FD frames */
+ cf->len = padlen(cf->len);
+ memset(cf->data, CAN_ISOTP_DEFAULT_PAD_CONTENT,
+ cf->len);
+ }
+ }
+
+ for (i = 0; i < num; i++)
+ cf->data[pcilen + i] = so->tx.buf[so->tx.idx++];
+
+ if (ae)
+ cf->data[0] = so->opt.ext_address;
+}
+
+static void isotp_create_fframe(struct canfd_frame *cf, struct isotp_sock *so,
+ int ae)
+{
+ int i;
+ int ff_pci_sz;
+
+ cf->can_id = so->txid;
+ cf->len = so->tx.ll_dl;
+ if (ae)
+ cf->data[0] = so->opt.ext_address;
+
+ /* create N_PCI bytes with 12/32 bit FF_DL data length */
+ if (so->tx.len > 4095) {
+ /* use 32 bit FF_DL notation */
+ cf->data[ae] = N_PCI_FF;
+ cf->data[ae + 1] = 0;
+ cf->data[ae + 2] = (u8) (so->tx.len >> 24) & 0xFFU;
+ cf->data[ae + 3] = (u8) (so->tx.len >> 16) & 0xFFU;
+ cf->data[ae + 4] = (u8) (so->tx.len >> 8) & 0xFFU;
+ cf->data[ae + 5] = (u8) so->tx.len & 0xFFU;
+ ff_pci_sz = FF_PCI_SZ32;
+ } else {
+ /* use 12 bit FF_DL notation */
+ cf->data[ae] = (u8) (so->tx.len>>8) | N_PCI_FF;
+ cf->data[ae + 1] = (u8) so->tx.len & 0xFFU;
+ ff_pci_sz = FF_PCI_SZ12;
+ }
+
+ /* add first data bytes depending on ae */
+ for (i = ae + ff_pci_sz; i < so->tx.ll_dl; i++)
+ cf->data[i] = so->tx.buf[so->tx.idx++];
+
+ so->tx.sn = 1;
+ so->tx.state = ISOTP_WAIT_FIRST_FC;
+}
+
+static void isotp_tx_timer_tsklet(unsigned long data)
+{
+ struct isotp_sock *so = (struct isotp_sock *)data;
+ struct sock *sk = &so->sk;
+ struct sk_buff *skb;
+ struct net_device *dev;
+ struct canfd_frame *cf;
+ int ae = (so->opt.flags & CAN_ISOTP_EXTEND_ADDR)? 1:0;
+
+ switch (so->tx.state) {
+
+ case ISOTP_WAIT_FC:
+ case ISOTP_WAIT_FIRST_FC:
+
+ /* we did not get any flow control frame in time */
+
+ DBG("we did not get FC frame in time.\n");
+
+ /* reset tx state */
+ so->tx.state = ISOTP_IDLE;
+ wake_up_interruptible(&so->wait);
+ break;
+
+ case ISOTP_SENDING:
+
+ /* push out the next segmented pdu */
+
+ DBG("next pdu to send.\n");
+
+ dev = dev_get_by_index(sock_net(sk), so->ifindex);
+ if (!dev)
+ break;
+
+isotp_tx_burst:
+ skb = alloc_skb(so->ll.mtu + CAN_SKBRES, gfp_any());
+ if (!skb) {
+ dev_put(dev);
+ break;
+ }
+
+ isotp_skb_reserve(skb, dev);
+ cf = (struct canfd_frame *)skb->data;
+ skb_put(skb, so->ll.mtu);
+
+ /* create consecutive frame */
+ isotp_fill_dataframe(cf, so, ae, 0);
+
+ /* place consecutive frame N_PCI in appropriate index */
+ cf->data[ae] = N_PCI_CF | so->tx.sn++;
+ so->tx.sn %= 16;
+ so->tx.bs++;
+
+ if (so->ll.mtu == CANFD_MTU)
+ cf->flags = so->ll.tx_flags;
+
+ skb->dev = dev;
+ isotp_skb_set_owner(skb, sk);
+ can_send(skb, 1);
+
+ if (so->tx.idx >= so->tx.len) {
+ /* we are done */
+ DBG("we are done\n");
+ so->tx.state = ISOTP_IDLE;
+ dev_put(dev);
+ wake_up_interruptible(&so->wait);
+ break;
+ }
+
+ if (so->txfc.bs && so->tx.bs >= so->txfc.bs) {
+ /* stop and wait for FC */
+ DBG("BS stop and wait for FC\n");
+ so->tx.state = ISOTP_WAIT_FC;
+ dev_put(dev);
+ hrtimer_start(&so->txtimer,
+ ktime_add(ktime_get(), ktime_set(1,0)),
+ HRTIMER_MODE_ABS);
+ break;
+ }
+
+ /* no gap between data frames needed => use burst mode */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)
+ if (!so->tx_gap)
+ goto isotp_tx_burst;
+#else
+ if (!so->tx_gap.tv64)
+ goto isotp_tx_burst;
+#endif
+
+ /* start timer to send next data frame with correct delay */
+ dev_put(dev);
+ hrtimer_start(&so->txtimer,
+ ktime_add(ktime_get(), so->tx_gap),
+ HRTIMER_MODE_ABS);
+ break;
+
+ default:
+ BUG_ON(1);
+ }
+}
+
+static enum hrtimer_restart isotp_tx_timer_handler(struct hrtimer *hrtimer)
+{
+ struct isotp_sock *so = container_of(hrtimer, struct isotp_sock,
+ txtimer);
+ tasklet_schedule(&so->txtsklet);
+
+ return HRTIMER_NORESTART;
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,1,0)
+static int isotp_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
+#else
+static int isotp_sendmsg(struct kiocb *iocb, struct socket *sock,
+ struct msghdr *msg, size_t size)
+#endif
+{
+ struct sock *sk = sock->sk;
+ struct isotp_sock *so = isotp_sk(sk);
+ struct sk_buff *skb;
+ struct net_device *dev;
+ struct canfd_frame *cf;
+ int ae = (so->opt.flags & CAN_ISOTP_EXTEND_ADDR)? 1:0;
+ int off;
+ int err;
+
+ if (!so->bound)
+ return -EADDRNOTAVAIL;
+
+ /* we do not support multiple buffers - for now */
+ if (so->tx.state != ISOTP_IDLE) {
+ if (msg->msg_flags & MSG_DONTWAIT)
+ return -EAGAIN;
+
+ /* wait for complete transmission of current pdu */
+ wait_event_interruptible(so->wait, so->tx.state == ISOTP_IDLE);
+ }
+
+ if (!size || size > MAX_MSG_LENGTH)
+ return -EINVAL;
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0)
+ err = memcpy_from_msg(so->tx.buf, msg, size);
+#else
+ err = memcpy_fromiovec(so->tx.buf, msg->msg_iov, size);
+#endif
+ if (err < 0)
+ return err;
+
+ dev = dev_get_by_index(sock_net(sk), so->ifindex);
+ if (!dev)
+ return -ENXIO;
+
+ skb = sock_alloc_send_skb(sk, so->ll.mtu + CAN_SKBRES,
+ msg->msg_flags & MSG_DONTWAIT, &err);
+ if (!skb) {
+ dev_put(dev);
+ return err;
+ }
+
+ isotp_skb_reserve(skb, dev);
+
+ so->tx.state = ISOTP_SENDING;
+ so->tx.len = size;
+ so->tx.idx = 0;
+
+ cf = (struct canfd_frame *)skb->data;
+ skb_put(skb, so->ll.mtu);
+
+ /* take care of a potential SF_DL ESC offset for TX_DL > 8 */
+ off = (so->tx.ll_dl > CAN_MAX_DLEN)? 1:0;
+
+ /* check for single frame transmission depending on TX_DL */
+ if (size <= so->tx.ll_dl - SF_PCI_SZ4 - ae - off) {
+
+ /*
+ * The message size generally fits into a SingleFrame - good.
+ *
+ * SF_DL ESC offset optimization:
+ *
+ * When TX_DL is greater 8 but the message would still fit
+ * into a 8 byte CAN frame, we can omit the offset.
+ * This prevents a protocol caused length extension from
+ * CAN_DL = 8 to CAN_DL = 12 due to the SF_SL ESC handling.
+ */
+ if (size <= CAN_MAX_DLEN - SF_PCI_SZ4 - ae)
+ off = 0;
+
+ isotp_fill_dataframe(cf, so, ae, off);
+
+ /* place single frame N_PCI w/o length in appropriate index */
+ cf->data[ae] = N_PCI_SF;
+
+ /* place SF_DL size value depending on the SF_DL ESC offset */
+ if (off)
+ cf->data[SF_PCI_SZ4 + ae] = size;
+ else
+ cf->data[ae] |= size;
+
+ so->tx.state = ISOTP_IDLE;
+ wake_up_interruptible(&so->wait);
+ } else {
+ /* send first frame and wait for FC */
+
+ isotp_create_fframe(cf, so, ae);
+
+ DBG("starting txtimer for fc\n");
+ /* start timeout for FC */
+ hrtimer_start(&so->txtimer, ktime_set(1,0), HRTIMER_MODE_REL);
+ }
+
+ /* send the first or only CAN frame */
+ if (so->ll.mtu == CANFD_MTU)
+ cf->flags = so->ll.tx_flags;
+
+ skb->dev = dev;
+ skb->sk = sk;
+ err = can_send(skb, 1);
+ dev_put(dev);
+ if (err)
+ return err;
+
+ return size;
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,1,0)
+static int isotp_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
+ int flags)
+#else
+static int isotp_recvmsg(struct kiocb *iocb, struct socket *sock,
+ struct msghdr *msg, size_t size, int flags)
+#endif
+{
+ struct sock *sk = sock->sk;
+ struct sk_buff *skb;
+ int err = 0;
+ int noblock;
+
+ noblock = flags & MSG_DONTWAIT;
+ flags &= ~MSG_DONTWAIT;
+
+ skb = skb_recv_datagram(sk, flags, noblock, &err);
+ if (!skb)
+ return err;
+
+ if (size < skb->len)
+ msg->msg_flags |= MSG_TRUNC;
+ else
+ size = skb->len;
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0)
+ err = memcpy_to_msg(msg, skb->data, size);
+#else
+ err = memcpy_toiovec(msg->msg_iov, skb->data, size);
+#endif
+ if (err < 0) {
+ skb_free_datagram(sk, skb);
+ return err;
+ }
+
+ sock_recv_timestamp(msg, sk, skb);
+
+ if (msg->msg_name) {
+ msg->msg_namelen = sizeof(struct sockaddr_can);
+ memcpy(msg->msg_name, skb->cb, msg->msg_namelen);
+ }
+
+ skb_free_datagram(sk, skb);
+
+ return size;
+}
+
+static int isotp_release(struct socket *sock)
+{
+ struct sock *sk = sock->sk;
+ struct isotp_sock *so;
+ struct net *net;
+
+ if (!sk)
+ return 0;
+
+ so = isotp_sk(sk);
+ net = sock_net(sk);
+
+ /* wait for complete transmission of current pdu */
+ wait_event_interruptible(so->wait, so->tx.state == ISOTP_IDLE);
+
+ unregister_netdevice_notifier(&so->notifier);
+
+ lock_sock(sk);
+
+ hrtimer_cancel(&so->txtimer);
+ hrtimer_cancel(&so->rxtimer);
+ tasklet_kill(&so->txtsklet);
+
+ /* remove current filters & unregister */
+ if (so->bound) {
+ if (so->ifindex) {
+ struct net_device *dev;
+
+ dev = dev_get_by_index(net, so->ifindex);
+ if (dev) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0)
+ can_rx_unregister(net, dev, so->rxid,
+#else
+ can_rx_unregister(dev, so->rxid,
+#endif
+ SINGLE_MASK(so->rxid),
+ isotp_rcv, sk);
+ dev_put(dev);
+ }
+ }
+ }
+
+ so->ifindex = 0;
+ so->bound = 0;
+
+ sock_orphan(sk);
+ sock->sk = NULL;
+
+ release_sock(sk);
+ sock_put(sk);
+
+ return 0;
+}
+
+static int isotp_bind(struct socket *sock, struct sockaddr *uaddr, int len)
+{
+ struct sockaddr_can *addr = (struct sockaddr_can *)uaddr;
+ struct sock *sk = sock->sk;
+ struct isotp_sock *so = isotp_sk(sk);
+ struct net *net = sock_net(sk);
+ int ifindex;
+ struct net_device *dev;
+ int err = 0;
+ int notify_enetdown = 0;
+
+ if (len < sizeof(*addr))
+ return -EINVAL;
+
+ if (addr->can_addr.tp.rx_id == addr->can_addr.tp.tx_id)
+ return -EADDRNOTAVAIL;
+
+ if ((addr->can_addr.tp.rx_id | addr->can_addr.tp.tx_id) &
+ (CAN_ERR_FLAG | CAN_RTR_FLAG))
+ return -EADDRNOTAVAIL;
+
+ if (!addr->can_ifindex)
+ return -ENODEV;
+
+ lock_sock(sk);
+
+ if (so->bound && addr->can_ifindex == so->ifindex &&
+ addr->can_addr.tp.rx_id == so->rxid &&
+ addr->can_addr.tp.tx_id == so->txid)
+ goto out;
+
+ dev = dev_get_by_index(net, addr->can_ifindex);
+ if (!dev) {
+ err = -ENODEV;
+ goto out;
+ }
+ if (dev->type != ARPHRD_CAN) {
+ dev_put(dev);
+ err = -ENODEV;
+ goto out;
+ }
+ if (dev->mtu < so->ll.mtu) {
+ dev_put(dev);
+ err = -EINVAL;
+ goto out;
+ }
+ if (!(dev->flags & IFF_UP))
+ notify_enetdown = 1;
+
+ ifindex = dev->ifindex;
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0)
+ can_rx_register(net, dev, addr->can_addr.tp.rx_id,
+#else
+ can_rx_register(dev, addr->can_addr.tp.rx_id,
+#endif
+ SINGLE_MASK(addr->can_addr.tp.rx_id), isotp_rcv, sk,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,9,11)) || \
+ ((LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,50)) && (LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0))) || \
+ ((LINUX_VERSION_CODE >= KERNEL_VERSION(3,18,49)) && (LINUX_VERSION_CODE < KERNEL_VERSION(3, 19, 0))) || \
+ ((LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,42)) && (LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)))
+ "isotp", sk);
+#else
+ "isotp");
+#endif
+ dev_put(dev);
+
+ if (so->bound) {
+ /* unregister old filter */
+ if (so->ifindex) {
+ dev = dev_get_by_index(net, so->ifindex);
+ if (dev) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0)
+ can_rx_unregister(net, dev, so->rxid,
+#else
+ can_rx_unregister(dev, so->rxid,
+#endif
+ SINGLE_MASK(so->rxid),
+ isotp_rcv, sk);
+ dev_put(dev);
+ }
+ }
+ }
+
+ /* switch to new settings */
+ so->ifindex = ifindex;
+ so->rxid = addr->can_addr.tp.rx_id;
+ so->txid = addr->can_addr.tp.tx_id;
+ so->bound = 1;
+
+out:
+ release_sock(sk);
+
+ if (notify_enetdown) {
+ sk->sk_err = ENETDOWN;
+ if (!sock_flag(sk, SOCK_DEAD))
+ sk->sk_error_report(sk);
+ }
+
+ return err;
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,17,0)
+static int isotp_getname(struct socket *sock, struct sockaddr *uaddr, int peer)
+#else
+static int isotp_getname(struct socket *sock, struct sockaddr *uaddr,
+ int *len, int peer)
+#endif
+{
+ struct sockaddr_can *addr = (struct sockaddr_can *)uaddr;
+ struct sock *sk = sock->sk;
+ struct isotp_sock *so = isotp_sk(sk);
+
+ if (peer)
+ return -EOPNOTSUPP;
+
+ addr->can_family = AF_CAN;
+ addr->can_ifindex = so->ifindex;
+ addr->can_addr.tp.rx_id = so->rxid;
+ addr->can_addr.tp.tx_id = so->txid;
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,17,0)
+ return sizeof(*addr);
+#else
+ *len = sizeof(*addr);
+
+ return 0;
+#endif
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+static int isotp_setsockopt(struct socket *sock, int level, int optname,
+ char __user *optval, unsigned int optlen)
+#else
+static int isotp_setsockopt(struct socket *sock, int level, int optname,
+ char __user *optval, int optlen)
+#endif
+{
+ struct sock *sk = sock->sk;
+ struct isotp_sock *so = isotp_sk(sk);
+ int ret = 0;
+
+ if (level != SOL_CAN_ISOTP)
+ return -EINVAL;
+ if (optlen < 0)
+ return -EINVAL;
+
+ switch (optname) {
+
+ case CAN_ISOTP_OPTS:
+ if (optlen != sizeof(struct can_isotp_options))
+ return -EINVAL;
+
+ if (copy_from_user(&so->opt, optval, optlen))
+ return -EFAULT;
+
+ /* no separate rx_ext_address is given => use ext_address */
+ if (!(so->opt.flags & CAN_ISOTP_RX_EXT_ADDR))
+ so->opt.rx_ext_address = so->opt.ext_address;
+ break;
+
+ case CAN_ISOTP_RECV_FC:
+ if (optlen != sizeof(struct can_isotp_fc_options))
+ return -EINVAL;
+
+ if (copy_from_user(&so->rxfc, optval, optlen))
+ return -EFAULT;
+ break;
+
+ case CAN_ISOTP_TX_STMIN:
+ if (optlen != sizeof(__u32))
+ return -EINVAL;
+
+ if (copy_from_user(&so->force_tx_stmin, optval, optlen))
+ return -EFAULT;
+ break;
+
+ case CAN_ISOTP_RX_STMIN:
+ if (optlen != sizeof(__u32))
+ return -EINVAL;
+
+ if (copy_from_user(&so->force_rx_stmin, optval, optlen))
+ return -EFAULT;
+ break;
+
+ case CAN_ISOTP_LL_OPTS:
+ if (optlen != sizeof(struct can_isotp_ll_options))
+ return -EINVAL;
+ else {
+ struct can_isotp_ll_options ll;
+
+ if (copy_from_user(&ll, optval, optlen))
+ return -EFAULT;
+
+ /* check for correct ISO 11898-1 DLC data lentgh */
+ if (ll.tx_dl != padlen(ll.tx_dl))
+ return -EINVAL;
+
+ if (ll.mtu != CAN_MTU && ll.mtu != CANFD_MTU)
+ return -EINVAL;
+
+ if (ll.mtu == CAN_MTU && ll.tx_dl > CAN_MAX_DLEN)
+ return -EINVAL;
+
+ memcpy(&so->ll, &ll, sizeof(ll));
+
+ /* set ll_dl for tx path to similar place as for rx */
+ so->tx.ll_dl = ll.tx_dl;
+ }
+ break;
+
+ default:
+ ret = -ENOPROTOOPT;
+ }
+
+ return ret;
+}
+
+static int isotp_getsockopt(struct socket *sock, int level, int optname,
+ char __user *optval, int __user *optlen)
+{
+ struct sock *sk = sock->sk;
+ struct isotp_sock *so = isotp_sk(sk);
+ int len;
+ void *val;
+
+ if (level != SOL_CAN_ISOTP)
+ return -EINVAL;
+ if (get_user(len, optlen))
+ return -EFAULT;
+ if (len < 0)
+ return -EINVAL;
+
+ switch (optname) {
+
+ case CAN_ISOTP_OPTS:
+ len = min_t(int, len, sizeof(struct can_isotp_options));
+ val = &so->opt;
+ break;
+
+ case CAN_ISOTP_RECV_FC:
+ len = min_t(int, len, sizeof(struct can_isotp_fc_options));
+ val = &so->rxfc;
+ break;
+
+ case CAN_ISOTP_TX_STMIN:
+ len = min_t(int, len, sizeof(__u32));
+ val = &so->force_tx_stmin;
+ break;
+
+ case CAN_ISOTP_RX_STMIN:
+ len = min_t(int, len, sizeof(__u32));
+ val = &so->force_rx_stmin;
+ break;
+
+ case CAN_ISOTP_LL_OPTS:
+ len = min_t(int, len, sizeof(struct can_isotp_ll_options));
+ val = &so->ll;
+ break;
+
+ default:
+ return -ENOPROTOOPT;
+ }
+
+ if (put_user(len, optlen))
+ return -EFAULT;
+ if (copy_to_user(optval, val, len))
+ return -EFAULT;
+ return 0;
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)
+static int isotp_notifier(struct notifier_block *nb, unsigned long msg,
+ void *ptr)
+{
+ struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+#else
+static int isotp_notifier(struct notifier_block *nb,
+ unsigned long msg, void *data)
+{
+ struct net_device *dev = (struct net_device *)data;
+#endif
+ struct isotp_sock *so = container_of(nb, struct isotp_sock, notifier);
+ struct sock *sk = &so->sk;
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0)
+ if (!net_eq(dev_net(dev), sock_net(sk)))
+ return NOTIFY_DONE;
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
+ if (dev_net(dev) != &init_net)
+ return NOTIFY_DONE;
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
+ if (dev->nd_net != &init_net)
+ return NOTIFY_DONE;
+#endif
+
+ if (dev->type != ARPHRD_CAN)
+ return NOTIFY_DONE;
+
+ if (so->ifindex != dev->ifindex)
+ return NOTIFY_DONE;
+
+ switch (msg) {
+
+ case NETDEV_UNREGISTER:
+ lock_sock(sk);
+ /* remove current filters & unregister */
+ if (so->bound)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0)
+ can_rx_unregister(dev_net(dev), dev, so->rxid,
+#else
+ can_rx_unregister(dev, so->rxid,
+#endif
+ SINGLE_MASK(so->rxid),
+ isotp_rcv, sk);
+
+ so->ifindex = 0;
+ so->bound = 0;
+ release_sock(sk);
+
+ sk->sk_err = ENODEV;
+ if (!sock_flag(sk, SOCK_DEAD))
+ sk->sk_error_report(sk);
+ break;
+
+ case NETDEV_DOWN:
+ sk->sk_err = ENETDOWN;
+ if (!sock_flag(sk, SOCK_DEAD))
+ sk->sk_error_report(sk);
+ break;
+ }
+
+ return NOTIFY_DONE;
+}
+
+static int isotp_init(struct sock *sk)
+{
+ struct isotp_sock *so = isotp_sk(sk);
+
+ so->ifindex = 0;
+ so->bound = 0;
+
+ so->opt.flags = CAN_ISOTP_DEFAULT_FLAGS;
+ so->opt.ext_address = CAN_ISOTP_DEFAULT_EXT_ADDRESS;
+ so->opt.rx_ext_address = CAN_ISOTP_DEFAULT_EXT_ADDRESS;
+ so->opt.rxpad_content = CAN_ISOTP_DEFAULT_PAD_CONTENT;
+ so->opt.txpad_content = CAN_ISOTP_DEFAULT_PAD_CONTENT;
+ so->opt.frame_txtime = CAN_ISOTP_DEFAULT_FRAME_TXTIME;
+ so->rxfc.bs = CAN_ISOTP_DEFAULT_RECV_BS;
+ so->rxfc.stmin = CAN_ISOTP_DEFAULT_RECV_STMIN;
+ so->rxfc.wftmax = CAN_ISOTP_DEFAULT_RECV_WFTMAX;
+ so->ll.mtu = CAN_ISOTP_DEFAULT_LL_MTU;
+ so->ll.tx_dl = CAN_ISOTP_DEFAULT_LL_TX_DL;
+ so->ll.tx_flags = CAN_ISOTP_DEFAULT_LL_TX_FLAGS;
+
+ /* set ll_dl for tx path to similar place as for rx */
+ so->tx.ll_dl = so->ll.tx_dl;
+
+ so->rx.state = ISOTP_IDLE;
+ so->tx.state = ISOTP_IDLE;
+
+ hrtimer_init(&so->rxtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ so->rxtimer.function = isotp_rx_timer_handler;
+ hrtimer_init(&so->txtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ so->txtimer.function = isotp_tx_timer_handler;
+
+ tasklet_init(&so->txtsklet, isotp_tx_timer_tsklet, (unsigned long)so);
+
+ init_waitqueue_head(&so->wait);
+
+ so->notifier.notifier_call = isotp_notifier;
+ register_netdevice_notifier(&so->notifier);
+
+ return 0;
+}
+
+int isotp_sock_no_ioctlcmd(struct socket *sock, unsigned int cmd,
+ unsigned long arg)
+{
+ /* no ioctls for socket layer -> hand it down to NIC layer */
+ return -ENOIOCTLCMD;
+}
+
+static const struct proto_ops isotp_ops = {
+ .family = PF_CAN,
+ .release = isotp_release,
+ .bind = isotp_bind,
+ .connect = sock_no_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = sock_no_accept,
+ .getname = isotp_getname,
+ .poll = datagram_poll,
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,2,0)
+ .ioctl = isotp_sock_no_ioctlcmd,
+ .gettstamp = sock_gettstamp,
+#else
+ .ioctl = can_ioctl, /* use can_ioctl() from af_can.c */
+#endif
+ .listen = sock_no_listen,
+ .shutdown = sock_no_shutdown,
+ .setsockopt = isotp_setsockopt,
+ .getsockopt = isotp_getsockopt,
+ .sendmsg = isotp_sendmsg,
+ .recvmsg = isotp_recvmsg,
+ .mmap = sock_no_mmap,
+ .sendpage = sock_no_sendpage,
+};
+
+static struct proto isotp_proto __read_mostly = {
+ .name = "CAN_ISOTP",
+ .owner = THIS_MODULE,
+ .obj_size = sizeof(struct isotp_sock),
+ .init = isotp_init,
+};
+
+static const struct can_proto isotp_can_proto = {
+ .type = SOCK_DGRAM,
+ .protocol = CAN_ISOTP,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
+ .capability = -1,
+#endif
+ .ops = &isotp_ops,
+ .prot = &isotp_proto,
+};
+
+static __init int isotp_module_init(void)
+{
+ int err;
+
+ printk(banner);
+
+ err = can_proto_register(&isotp_can_proto);
+ if (err < 0)
+ printk(KERN_ERR "can: registration of isotp protocol failed\n");
+
+ return err;
+}
+
+static __exit void isotp_module_exit(void)
+{
+ can_proto_unregister(&isotp_can_proto);
+}
+
+module_init(isotp_module_init);
+module_exit(isotp_module_exit);
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index 974de4d20f..c893bf91e7 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -676,6 +676,9 @@ choice
config DEFAULT_VEGAS
bool "Vegas" if TCP_CONG_VEGAS=y
+ config DEFAULT_YEAH
+ bool "YeAH" if TCP_CONG_YEAH=y
+
config DEFAULT_VENO
bool "Veno" if TCP_CONG_VENO=y
@@ -709,6 +712,7 @@ config DEFAULT_TCP_CONG
default "htcp" if DEFAULT_HTCP
default "hybla" if DEFAULT_HYBLA
default "vegas" if DEFAULT_VEGAS
+ default "yeah" if DEFAULT_YEAH
default "westwood" if DEFAULT_WESTWOOD
default "veno" if DEFAULT_VENO
default "reno" if DEFAULT_RENO
diff --git a/samples/seccomp/Makefile b/samples/seccomp/Makefile
index 009775b525..7de6f0cbc4 100644
--- a/samples/seccomp/Makefile
+++ b/samples/seccomp/Makefile
@@ -22,6 +22,7 @@ user-trap-objs := user-trap.o
# Try to match the kernel target.
ifndef CONFIG_64BIT
+ifndef CONFIG_ARM
# s390 has -m31 flag to build 31 bit binaries
ifndef CONFIG_S390
@@ -42,3 +43,4 @@ HOSTLDLIBS_user-trap += $(MFLAG)
endif
always := $(hostprogs-y)
endif
+endif
diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
index 2339f86126..f26d6cffd6 100755
--- a/scripts/mkcompile_h
+++ b/scripts/mkcompile_h
@@ -50,8 +50,8 @@ else
fi
UTS_VERSION="#$VERSION"
-CONFIG_FLAGS=""
-if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi
+CONFIG_FLAGS="PCK"
+if [ -n "$SMP" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS SMP"; fi
if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi
UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP"
diff --git a/security/device_cgroup.c b/security/device_cgroup.c
index 725674f327..83f6494c52 100644
--- a/security/device_cgroup.c
+++ b/security/device_cgroup.c
@@ -824,3 +824,4 @@ int __devcgroup_check_permission(short type, u32 major, u32 minor,
return 0;
}
+EXPORT_SYMBOL_GPL(__devcgroup_check_permission);
diff --git a/security/security.c b/security/security.c
index 250ee2d764..2765042d48 100644
--- a/security/security.c
+++ b/security/security.c
@@ -996,6 +996,7 @@ int security_path_rmdir(const struct path *dir, struct dentry *dentry)
return 0;
return call_int_hook(path_rmdir, 0, dir, dentry);
}
+EXPORT_SYMBOL_GPL(security_path_rmdir);
int security_path_unlink(const struct path *dir, struct dentry *dentry)
{
@@ -1012,6 +1013,7 @@ int security_path_symlink(const struct path *dir, struct dentry *dentry,
return 0;
return call_int_hook(path_symlink, 0, dir, dentry, old_name);
}
+EXPORT_SYMBOL_GPL(security_path_symlink);
int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
struct dentry *new_dentry)
@@ -1020,6 +1022,7 @@ int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
return 0;
return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
}
+EXPORT_SYMBOL_GPL(security_path_link);
int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
const struct path *new_dir, struct dentry *new_dentry,
@@ -1047,6 +1050,7 @@ int security_path_truncate(const struct path *path)
return 0;
return call_int_hook(path_truncate, 0, path);
}
+EXPORT_SYMBOL_GPL(security_path_truncate);
int security_path_chmod(const struct path *path, umode_t mode)
{
@@ -1054,6 +1058,7 @@ int security_path_chmod(const struct path *path, umode_t mode)
return 0;
return call_int_hook(path_chmod, 0, path, mode);
}
+EXPORT_SYMBOL_GPL(security_path_chmod);
int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
{
@@ -1061,6 +1066,7 @@ int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
return 0;
return call_int_hook(path_chown, 0, path, uid, gid);
}
+EXPORT_SYMBOL_GPL(security_path_chown);
int security_path_chroot(const struct path *path)
{
@@ -1161,6 +1167,7 @@ int security_inode_permission(struct inode *inode, int mask)
return 0;
return call_int_hook(inode_permission, 0, inode, mask);
}
+EXPORT_SYMBOL_GPL(security_inode_permission);
int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
{
@@ -1338,6 +1345,7 @@ int security_file_permission(struct file *file, int mask)
return fsnotify_perm(file, mask);
}
+EXPORT_SYMBOL_GPL(security_file_permission);
int security_file_alloc(struct file *file)
{