mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
|
// +build solaris darwin freebsd
|
||
|
|
|
||
|
|
package fs
|
||
|
|
|
||
|
|
import (
|
||
|
|
"io"
|
||
|
|
"os"
|
||
|
|
"syscall"
|
||
|
|
|
||
|
|
"github.com/containerd/containerd/sys"
|
||
|
|
"github.com/pkg/errors"
|
||
|
|
"golang.org/x/sys/unix"
|
||
|
|
)
|
||
|
|
|
||
|
|
func getUidGid(fi os.FileInfo) (uid, gid int) {
|
||
|
|
st := fi.Sys().(*syscall.Stat_t)
|
||
|
|
return int(st.Uid), int(st.Gid)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *copier) copyFileInfo(fi os.FileInfo, name string) error {
|
||
|
|
st := fi.Sys().(*syscall.Stat_t)
|
||
|
|
chown := c.chown
|
||
|
|
if chown == nil {
|
||
|
|
uid, gid := getUidGid(fi)
|
||
|
|
chown = &ChownOpt{Uid: uid, Gid: gid}
|
||
|
|
}
|
||
|
|
if err := Chown(name, chown); err != nil {
|
||
|
|
return errors.Wrapf(err, "failed to chown %s", name)
|
||
|
|
}
|
||
|
|
|
||
|
|
m := fi.Mode()
|
||
|
|
if c.mode != nil {
|
||
|
|
m = (m & ^os.FileMode(0777)) | os.FileMode(*c.mode&0777)
|
||
|
|
}
|
||
|
|
if (fi.Mode() & os.ModeSymlink) != os.ModeSymlink {
|
||
|
|
if err := os.Chmod(name, m); err != nil {
|
||
|
|
return errors.Wrapf(err, "failed to chmod %s", name)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if c.utime != nil {
|
||
|
|
if err := Utimes(name, c.utime); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
timespec := []unix.Timespec{unix.Timespec(sys.StatAtime(st)), unix.Timespec(sys.StatMtime(st))}
|
||
|
|
if err := unix.UtimesNanoAt(unix.AT_FDCWD, name, timespec, unix.AT_SYMLINK_NOFOLLOW); 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 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))
|
||
|
|
}
|