how 56 libdb/compat.h #define sigprocmask(how, set, oset) \ how 58 libdb/compat.h (((how) == SIG_BLOCK) ? \ how 60 libdb/compat.h (((how) == SIG_UNBLOCK) ? \ how 62 libdb/compat.h ((how) == SIG_SETMASK ? \