Function chown

client/container_opts_unix.go:127–147

(root string, idMap userns.IDMap)

}

func chown(root string, idMap userns.IDMap) filepath.WalkFunc {
	return func(path string, info os.FileInfo, err error) error {
		if err != nil {
			return err
		}
		stat := info.Sys().(*syscall.Stat_t)
		h, cerr := idMap.ToHost(userns.User{Uid: stat.Uid, Gid: stat.Gid})
		if cerr != nil {
			return cerr
		}
		// be sure the lchown the path as to not de-reference the symlink to a host file
		if cerr = os.Lchown(path, int(h.Uid), int(h.Gid)); cerr != nil {
			return cerr
		}
		// we must retain special permissions such as setuid, setgid and sticky bits
		if mode := info.Mode(); mode&os.ModeSymlink == 0 && mode&(os.ModeSetuid|os.ModeSetgid|os.ModeSticky) != 0 {
			return os.Chmod(path, mode)
		}
		return nil
	}
}