diff --git a/unix/syscall_linux.go b/unix/syscall_linux.go index 77f9c54e..886e4140 100644 --- a/unix/syscall_linux.go +++ b/unix/syscall_linux.go @@ -36,6 +36,20 @@ func Creat(path string, mode uint32) (fd int, err error) { return Open(path, O_CREAT|O_WRONLY|O_TRUNC, mode) } +//sys fchmodat(dirfd int, path string, mode uint32) (err error) + +func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) { + // Linux fchmodat doesn't support the flags parameter. Mimick glibc's behavior + // and check the flags. Otherwise the mode would be applied to the symlink + // destination which is not what the user expects. + if flags&^AT_SYMLINK_NOFOLLOW != 0 { + return EINVAL + } else if flags&AT_SYMLINK_NOFOLLOW != 0 { + return EOPNOTSUPP + } + return fchmodat(dirfd, path, mode) +} + //sys ioctl(fd int, req uint, arg uintptr) (err error) // ioctl itself should not be exposed directly, but additional get/set @@ -1177,7 +1191,6 @@ func Mount(source string, target string, fstype string, flags uintptr, data stri //sys Fallocate(fd int, mode uint32, off int64, len int64) (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 fcntl(fd int, cmd int, arg int) (val int, err error) //sys Fdatasync(fd int) (err error) diff --git a/unix/syscall_linux_test.go b/unix/syscall_linux_test.go index e42b4ee6..37702313 100644 --- a/unix/syscall_linux_test.go +++ b/unix/syscall_linux_test.go @@ -15,6 +15,32 @@ import ( "golang.org/x/sys/unix" ) +func TestFchmodat(t *testing.T) { + defer chtmpdir(t)() + + touch(t, "file1") + os.Symlink("file1", "symlink1") + + err := unix.Fchmodat(unix.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 = unix.Fchmodat(unix.AT_FDCWD, "symlink1", 0444, unix.AT_SYMLINK_NOFOLLOW) + if err != unix.EOPNOTSUPP { + t.Fatalf("Fchmodat: unexpected error: %v, expected EOPNOTSUPP", err) + } +} + func TestIoctlGetInt(t *testing.T) { f, err := os.Open("/dev/random") if err != nil { diff --git a/unix/zsyscall_linux_386.go b/unix/zsyscall_linux_386.go index 51de8489..6c084507 100644 --- a/unix/zsyscall_linux_386.go +++ b/unix/zsyscall_linux_386.go @@ -14,6 +14,21 @@ var _ syscall.Errno // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT +func fchmodat(dirfd int, path string, mode uint32) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + _, _, e1 := Syscall(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode)) + if e1 != 0 { + err = errnoErr(e1) + } + return +} + +// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT + func ioctl(fd int, req uint, arg uintptr) (err error) { _, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg)) if e1 != 0 { @@ -574,21 +589,6 @@ func Fchmod(fd int, mode uint32) (err error) { // 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) { - var _p0 *byte - _p0, err = BytePtrFromString(path) - if err != nil { - return - } - _, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0) - if e1 != 0 { - err = errnoErr(e1) - } - return -} - -// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT - func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) { var _p0 *byte _p0, err = BytePtrFromString(path) diff --git a/unix/zsyscall_linux_amd64.go b/unix/zsyscall_linux_amd64.go index 19f9fe56..f34418dd 100644 --- a/unix/zsyscall_linux_amd64.go +++ b/unix/zsyscall_linux_amd64.go @@ -14,6 +14,21 @@ var _ syscall.Errno // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT +func fchmodat(dirfd int, path string, mode uint32) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + _, _, e1 := Syscall(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode)) + if e1 != 0 { + err = errnoErr(e1) + } + return +} + +// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT + func ioctl(fd int, req uint, arg uintptr) (err error) { _, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg)) if e1 != 0 { @@ -574,21 +589,6 @@ func Fchmod(fd int, mode uint32) (err error) { // 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) { - var _p0 *byte - _p0, err = BytePtrFromString(path) - if err != nil { - return - } - _, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0) - if e1 != 0 { - err = errnoErr(e1) - } - return -} - -// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT - func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) { var _p0 *byte _p0, err = BytePtrFromString(path) diff --git a/unix/zsyscall_linux_arm.go b/unix/zsyscall_linux_arm.go index 47d7d538..92b4716e 100644 --- a/unix/zsyscall_linux_arm.go +++ b/unix/zsyscall_linux_arm.go @@ -14,6 +14,21 @@ var _ syscall.Errno // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT +func fchmodat(dirfd int, path string, mode uint32) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + _, _, e1 := Syscall(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode)) + if e1 != 0 { + err = errnoErr(e1) + } + return +} + +// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT + func ioctl(fd int, req uint, arg uintptr) (err error) { _, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg)) if e1 != 0 { @@ -574,21 +589,6 @@ func Fchmod(fd int, mode uint32) (err error) { // 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) { - var _p0 *byte - _p0, err = BytePtrFromString(path) - if err != nil { - return - } - _, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0) - if e1 != 0 { - err = errnoErr(e1) - } - return -} - -// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT - func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) { var _p0 *byte _p0, err = BytePtrFromString(path) diff --git a/unix/zsyscall_linux_arm64.go b/unix/zsyscall_linux_arm64.go index 7bc66933..ec559204 100644 --- a/unix/zsyscall_linux_arm64.go +++ b/unix/zsyscall_linux_arm64.go @@ -14,6 +14,21 @@ var _ syscall.Errno // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT +func fchmodat(dirfd int, path string, mode uint32) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + _, _, e1 := Syscall(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode)) + if e1 != 0 { + err = errnoErr(e1) + } + return +} + +// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT + func ioctl(fd int, req uint, arg uintptr) (err error) { _, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg)) if e1 != 0 { @@ -574,21 +589,6 @@ func Fchmod(fd int, mode uint32) (err error) { // 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) { - var _p0 *byte - _p0, err = BytePtrFromString(path) - if err != nil { - return - } - _, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0) - if e1 != 0 { - err = errnoErr(e1) - } - return -} - -// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT - func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) { var _p0 *byte _p0, err = BytePtrFromString(path) diff --git a/unix/zsyscall_linux_mips.go b/unix/zsyscall_linux_mips.go index e563565d..e6c2bf52 100644 --- a/unix/zsyscall_linux_mips.go +++ b/unix/zsyscall_linux_mips.go @@ -14,6 +14,21 @@ var _ syscall.Errno // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT +func fchmodat(dirfd int, path string, mode uint32) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + _, _, e1 := Syscall(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode)) + if e1 != 0 { + err = errnoErr(e1) + } + return +} + +// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT + func ioctl(fd int, req uint, arg uintptr) (err error) { _, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg)) if e1 != 0 { @@ -574,21 +589,6 @@ func Fchmod(fd int, mode uint32) (err error) { // 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) { - var _p0 *byte - _p0, err = BytePtrFromString(path) - if err != nil { - return - } - _, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0) - if e1 != 0 { - err = errnoErr(e1) - } - return -} - -// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT - func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) { var _p0 *byte _p0, err = BytePtrFromString(path) diff --git a/unix/zsyscall_linux_mips64.go b/unix/zsyscall_linux_mips64.go index 1ee4a5e4..f77f1d09 100644 --- a/unix/zsyscall_linux_mips64.go +++ b/unix/zsyscall_linux_mips64.go @@ -14,6 +14,21 @@ var _ syscall.Errno // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT +func fchmodat(dirfd int, path string, mode uint32) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + _, _, e1 := Syscall(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode)) + if e1 != 0 { + err = errnoErr(e1) + } + return +} + +// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT + func ioctl(fd int, req uint, arg uintptr) (err error) { _, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg)) if e1 != 0 { @@ -574,21 +589,6 @@ func Fchmod(fd int, mode uint32) (err error) { // 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) { - var _p0 *byte - _p0, err = BytePtrFromString(path) - if err != nil { - return - } - _, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0) - if e1 != 0 { - err = errnoErr(e1) - } - return -} - -// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT - func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) { var _p0 *byte _p0, err = BytePtrFromString(path) diff --git a/unix/zsyscall_linux_mips64le.go b/unix/zsyscall_linux_mips64le.go index 80506f59..d6ce8611 100644 --- a/unix/zsyscall_linux_mips64le.go +++ b/unix/zsyscall_linux_mips64le.go @@ -14,6 +14,21 @@ var _ syscall.Errno // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT +func fchmodat(dirfd int, path string, mode uint32) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + _, _, e1 := Syscall(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode)) + if e1 != 0 { + err = errnoErr(e1) + } + return +} + +// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT + func ioctl(fd int, req uint, arg uintptr) (err error) { _, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg)) if e1 != 0 { @@ -574,21 +589,6 @@ func Fchmod(fd int, mode uint32) (err error) { // 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) { - var _p0 *byte - _p0, err = BytePtrFromString(path) - if err != nil { - return - } - _, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0) - if e1 != 0 { - err = errnoErr(e1) - } - return -} - -// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT - func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) { var _p0 *byte _p0, err = BytePtrFromString(path) diff --git a/unix/zsyscall_linux_mipsle.go b/unix/zsyscall_linux_mipsle.go index 0a412e1b..c0134065 100644 --- a/unix/zsyscall_linux_mipsle.go +++ b/unix/zsyscall_linux_mipsle.go @@ -14,6 +14,21 @@ var _ syscall.Errno // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT +func fchmodat(dirfd int, path string, mode uint32) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + _, _, e1 := Syscall(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode)) + if e1 != 0 { + err = errnoErr(e1) + } + return +} + +// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT + func ioctl(fd int, req uint, arg uintptr) (err error) { _, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg)) if e1 != 0 { @@ -574,21 +589,6 @@ func Fchmod(fd int, mode uint32) (err error) { // 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) { - var _p0 *byte - _p0, err = BytePtrFromString(path) - if err != nil { - return - } - _, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0) - if e1 != 0 { - err = errnoErr(e1) - } - return -} - -// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT - func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) { var _p0 *byte _p0, err = BytePtrFromString(path) diff --git a/unix/zsyscall_linux_ppc64.go b/unix/zsyscall_linux_ppc64.go index c9751d25..6b7a291c 100644 --- a/unix/zsyscall_linux_ppc64.go +++ b/unix/zsyscall_linux_ppc64.go @@ -14,6 +14,21 @@ var _ syscall.Errno // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT +func fchmodat(dirfd int, path string, mode uint32) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + _, _, e1 := Syscall(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode)) + if e1 != 0 { + err = errnoErr(e1) + } + return +} + +// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT + func ioctl(fd int, req uint, arg uintptr) (err error) { _, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg)) if e1 != 0 { @@ -574,21 +589,6 @@ func Fchmod(fd int, mode uint32) (err error) { // 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) { - var _p0 *byte - _p0, err = BytePtrFromString(path) - if err != nil { - return - } - _, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0) - if e1 != 0 { - err = errnoErr(e1) - } - return -} - -// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT - func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) { var _p0 *byte _p0, err = BytePtrFromString(path) diff --git a/unix/zsyscall_linux_ppc64le.go b/unix/zsyscall_linux_ppc64le.go index 3848a49c..7585277e 100644 --- a/unix/zsyscall_linux_ppc64le.go +++ b/unix/zsyscall_linux_ppc64le.go @@ -14,6 +14,21 @@ var _ syscall.Errno // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT +func fchmodat(dirfd int, path string, mode uint32) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + _, _, e1 := Syscall(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode)) + if e1 != 0 { + err = errnoErr(e1) + } + return +} + +// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT + func ioctl(fd int, req uint, arg uintptr) (err error) { _, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg)) if e1 != 0 { @@ -574,21 +589,6 @@ func Fchmod(fd int, mode uint32) (err error) { // 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) { - var _p0 *byte - _p0, err = BytePtrFromString(path) - if err != nil { - return - } - _, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0) - if e1 != 0 { - err = errnoErr(e1) - } - return -} - -// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT - func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) { var _p0 *byte _p0, err = BytePtrFromString(path) diff --git a/unix/zsyscall_linux_s390x.go b/unix/zsyscall_linux_s390x.go index 1e16935d..987ce866 100644 --- a/unix/zsyscall_linux_s390x.go +++ b/unix/zsyscall_linux_s390x.go @@ -14,6 +14,21 @@ var _ syscall.Errno // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT +func fchmodat(dirfd int, path string, mode uint32) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + _, _, e1 := Syscall(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode)) + if e1 != 0 { + err = errnoErr(e1) + } + return +} + +// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT + func ioctl(fd int, req uint, arg uintptr) (err error) { _, _, e1 := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), uintptr(arg)) if e1 != 0 { @@ -574,21 +589,6 @@ func Fchmod(fd int, mode uint32) (err error) { // 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) { - var _p0 *byte - _p0, err = BytePtrFromString(path) - if err != nil { - return - } - _, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0) - if e1 != 0 { - err = errnoErr(e1) - } - return -} - -// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT - func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) { var _p0 *byte _p0, err = BytePtrFromString(path)