O_DSYNC
case O_DSYNC:
if (flags & (O_SYNC | O_FSYNC | O_DSYNC))
if ((fp->f_flag & O_DSYNC) != 0)
O_CLOEXEC | O_VERIFY | O_PATH | O_RESOLVE_BENEATH | O_DSYNC | \
#define FDSYNC O_DSYNC /* kernel */
aio_fsync_test(O_DSYNC);
ATF_REQUIRE_ERRNO(EBADF, aio_fsync(O_DSYNC, &aio) == -1);