err := syscall.Fchmodat(_AT_FDCWD, "symlink1", 0444, 0)
	if err != nil {
		t.Fatalf("Fchmodat: unexpected error: %v", err)
	}

	fi, err := os.Stat("file1")
	if err != nil {
		t.Fatal(err)
	}

	if fi.Mode() != 0444 {
		t.Errorf("Fchmodat: failed to change mode: expected %v, got %v", 0444, fi.Mode())
	}

	err = syscall.Fchmodat(_AT_FDCWD, "symlink1", 0444, _AT_SYMLINK_NOFOLLOW)

		return nil
	}

	return EACCES
}

//sys	fchmodat(dirfd int, path string, mode uint32) (err error)
//sys	fchmodat2(dirfd int, path string, mode uint32, flags int) (err error) = _SYS_fchmodat2

func Fchmodat(dirfd int, path string, mode uint32, flags int) error {
	// Linux fchmodat doesn't support the flags parameter, but fchmodat2 does.
	// Try fchmodat2 if flags are specified.
	if flags != 0 {

//sys	Dup(oldfd int) (fd int, err error)
//sys	Exit(code int)
//sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
//sys	Fchdir(fd int) (err error)
//sys	Fchmod(fd int, mode uint32) (err error)
//sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
//sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
//sys	Fdatasync(fd int) (err error)
// readdir_r

}

//sys	fchmodat(dirfd int, path string, mode uint32) (err error)
//sys	fchmodat2(dirfd int, path string, mode uint32, flags int) (err error)

func Fchmodat(dirfd int, path string, mode uint32, flags int) error {
	// Linux fchmodat doesn't support the flags parameter, but fchmodat2 does.
	// Try fchmodat2 if flags are specified.
	if flags != 0 {
		err := fchmodat2(dirfd, path, mode, flags)
		if err == ENOSYS {

	MOVD $·Faccessat(SB), R8
	MOVD R8, ret+0(FP)
	RET

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

TEXT ·get_FchmodatAddr(SB), NOSPLIT|NOFRAME, $0-8
	MOVD $·Fchmodat(SB), R8
	MOVD R8, ret+0(FP)
	RET

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

TEXT ·get_FchownatAddr(SB), NOSPLIT|NOFRAME, $0-8
	MOVD $·Fchownat(SB), R8
	MOVD R8, ret+0(FP)
	RET

//sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
//sys	Fchdir(fd int) (err error)
//sys	Fchflags(fd int, flags int) (err error)
//sys	Fchmod(fd int, mode uint32) (err error)
//sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
//sys	Fchown(fd int, uid int, gid int) (err error)
//sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)

//sys	Exit(code int)
//sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
//sys	Fchdir(fd int) (err error)
//sys	Fchflags(fd int, flags int) (err error)
//sys	Fchmod(fd int, mode uint32) (err error)
//sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
//sys	Fchown(fd int, uid int, gid int) (err error)
//sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)

//sys	Exit(code int)
//sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
//sys	Fchdir(fd int) (err error)
//sys	Fchflags(fd int, flags int) (err error)
//sys	Fchmod(fd int, mode uint32) (err error)
//sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
//sys	Fchown(fd int, uid int, gid int) (err error)
//sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)

	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Fchmod(fd int, mode uint32) (err error) {
	r0, er := C.fchmod(C.int(fd), C.uint(mode))
	if r0 == -1 && er != nil {
		err = er
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {

	SYS_CPUSET_SETAFFINITY       = 488 // { int cpuset_setaffinity(cpulevel_t level, \
	SYS_FACCESSAT                = 489 // { int faccessat(int fd, char *path, int amode, \
	SYS_FCHMODAT                 = 490 // { int fchmodat(int fd, char *path, mode_t mode, \
	SYS_FCHOWNAT                 = 491 // { int fchownat(int fd, char *path, uid_t uid, \
	SYS_FEXECVE                  = 492 // { int fexecve(int fd, char **argv, \