reg/vendor/github.com/containerd/continuity/driver/lchmod_linux.go
Jess Frazelle 843aebf2c1
update deps
Signed-off-by: Jess Frazelle <acidburn@microsoft.com>
2018-07-14 11:48:41 -04:00

20 lines
496 B
Go

package driver
import (
"os"
"golang.org/x/sys/unix"
)
// Lchmod changes the mode of a file not following symlinks.
func (d *driver) Lchmod(path string, mode os.FileMode) error {
// On Linux, file mode is not supported for symlinks,
// and fchmodat() does not support AT_SYMLINK_NOFOLLOW,
// so symlinks need to be skipped entirely.
if st, err := os.Stat(path); err == nil && st.Mode()&os.ModeSymlink != 0 {
return nil
}
return unix.Fchmodat(unix.AT_FDCWD, path, uint32(mode), 0)
}