| // +build solaris darwin freebsd |
| |
| package fs |
| |
| import ( |
| "io" |
| "os" |
| "syscall" |
| |
| "github.com/containerd/containerd/sys" |
| "github.com/containerd/continuity/sysx" |
| "github.com/pkg/errors" |
| "golang.org/x/sys/unix" |
| ) |
| |
| func copyFileInfo(fi os.FileInfo, name string) error { |
| st := fi.Sys().(*syscall.Stat_t) |
| if err := os.Lchown(name, int(st.Uid), int(st.Gid)); err != nil { |
| return errors.Wrapf(err, "failed to chown %s", name) |
| } |
| |
| if (fi.Mode() & os.ModeSymlink) != os.ModeSymlink { |
| if err := os.Chmod(name, fi.Mode()); err != nil { |
| return errors.Wrapf(err, "failed to chmod %s", name) |
| } |
| } |
| |
| timespec := []syscall.Timespec{sys.StatAtime(st), sys.StatMtime(st)} |
| if err := syscall.UtimesNano(name, timespec); err != nil { |
| return errors.Wrapf(err, "failed to utime %s", name) |
| } |
| |
| return nil |
| } |
| |
| func copyFileContent(dst, src *os.File) error { |
| buf := bufferPool.Get().([]byte) |
| _, err := io.CopyBuffer(dst, src, buf) |
| bufferPool.Put(buf) |
| |
| return err |
| } |
| |
| func copyXAttrs(dst, src string) error { |
| xattrKeys, err := sysx.LListxattr(src) |
| if err != nil { |
| return errors.Wrapf(err, "failed to list xattrs on %s", src) |
| } |
| for _, xattr := range xattrKeys { |
| data, err := sysx.LGetxattr(src, xattr) |
| if err != nil { |
| return errors.Wrapf(err, "failed to get xattr %q on %s", xattr, src) |
| } |
| if err := sysx.LSetxattr(dst, xattr, data, 0); err != nil { |
| return errors.Wrapf(err, "failed to set xattr %q on %s", xattr, dst) |
| } |
| } |
| |
| return nil |
| } |
| |
| func copyDevice(dst string, fi os.FileInfo) error { |
| st, ok := fi.Sys().(*syscall.Stat_t) |
| if !ok { |
| return errors.New("unsupported stat type") |
| } |
| return unix.Mknod(dst, uint32(fi.Mode()), int(st.Rdev)) |
| } |