| // +build !windows |
| |
| package fsutil |
| |
| import ( |
| "os" |
| "syscall" |
| |
| "github.com/containerd/continuity/sysx" |
| "github.com/pkg/errors" |
| ) |
| |
| func rewriteMetadata(p string, stat *Stat) error { |
| for key, value := range stat.Xattrs { |
| sysx.Setxattr(p, key, value, 0) |
| } |
| |
| if err := os.Lchown(p, int(stat.Uid), int(stat.Gid)); err != nil { |
| return errors.Wrapf(err, "failed to lchown %s", p) |
| } |
| |
| if os.FileMode(stat.Mode)&os.ModeSymlink == 0 { |
| if err := os.Chmod(p, os.FileMode(stat.Mode)); err != nil { |
| return errors.Wrapf(err, "failed to chown %s", p) |
| } |
| } |
| |
| if err := chtimes(p, stat.ModTime); err != nil { |
| return errors.Wrapf(err, "failed to chtimes %s", p) |
| } |
| |
| return nil |
| } |
| |
| // handleTarTypeBlockCharFifo is an OS-specific helper function used by |
| // createTarFile to handle the following types of header: Block; Char; Fifo |
| func handleTarTypeBlockCharFifo(path string, stat *Stat) error { |
| mode := uint32(stat.Mode & 07777) |
| if os.FileMode(stat.Mode)&os.ModeCharDevice != 0 { |
| mode |= syscall.S_IFCHR |
| } else if os.FileMode(stat.Mode)&os.ModeNamedPipe != 0 { |
| mode |= syscall.S_IFIFO |
| } else { |
| mode |= syscall.S_IFBLK |
| } |
| |
| if err := syscall.Mknod(path, mode, int(mkdev(stat.Devmajor, stat.Devminor))); err != nil { |
| return err |
| } |
| return nil |
| } |