mirror of https://github.com/docker/cli.git
65 lines
1.5 KiB
Go
65 lines
1.5 KiB
Go
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// +build linux
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package fsutil
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import (
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"os"
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"syscall"
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"github.com/pkg/errors"
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"github.com/stevvooe/continuity/sysx"
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"golang.org/x/sys/unix"
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)
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func rewriteMetadata(p string, stat *Stat) error {
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for key, value := range stat.Xattrs {
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sysx.Setxattr(p, key, value, 0)
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}
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if err := os.Lchown(p, int(stat.Uid), int(stat.Gid)); err != nil {
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return errors.Wrapf(err, "failed to lchown %s", p)
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}
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if os.FileMode(stat.Mode)&os.ModeSymlink == 0 {
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if err := os.Chmod(p, os.FileMode(stat.Mode)); err != nil {
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return errors.Wrapf(err, "failed to chown %s", p)
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}
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}
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if err := chtimes(p, stat.ModTime); err != nil {
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return errors.Wrapf(err, "failed to chtimes %s", p)
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}
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return nil
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}
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func chtimes(path string, un int64) error {
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var utimes [2]unix.Timespec
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utimes[0] = unix.NsecToTimespec(un)
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utimes[1] = utimes[0]
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if err := unix.UtimesNanoAt(unix.AT_FDCWD, path, utimes[0:], unix.AT_SYMLINK_NOFOLLOW); err != nil {
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return errors.Wrap(err, "failed call to UtimesNanoAt")
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}
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return nil
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}
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// handleTarTypeBlockCharFifo is an OS-specific helper function used by
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// createTarFile to handle the following types of header: Block; Char; Fifo
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func handleTarTypeBlockCharFifo(path string, stat *Stat) error {
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mode := uint32(stat.Mode & 07777)
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if os.FileMode(stat.Mode)&os.ModeCharDevice != 0 {
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mode |= syscall.S_IFCHR
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} else if os.FileMode(stat.Mode)&os.ModeNamedPipe != 0 {
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mode |= syscall.S_IFIFO
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} else {
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mode |= syscall.S_IFBLK
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}
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if err := syscall.Mknod(path, mode, int(mkdev(stat.Devmajor, stat.Devminor))); err != nil {
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return err
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}
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return nil
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}
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