mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
32 lines
730 B
Go
32 lines
730 B
Go
package chrootarchive
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
|
|
"github.com/docker/docker/pkg/archive"
|
|
)
|
|
|
|
func ApplyLayer(dest string, layer archive.ArchiveReader) (size int64, err error) {
|
|
dest = filepath.Clean(dest)
|
|
decompressed, err := archive.DecompressStream(layer)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
defer decompressed.Close()
|
|
|
|
tmpDir, err := ioutil.TempDir(os.Getenv("temp"), "temp-docker-extract")
|
|
if err != nil {
|
|
return 0, fmt.Errorf("ApplyLayer failed to create temp-docker-extract under %s. %s", dest, err)
|
|
}
|
|
|
|
s, err := archive.UnpackLayer(dest, decompressed)
|
|
os.RemoveAll(tmpDir)
|
|
if err != nil {
|
|
return 0, fmt.Errorf("ApplyLayer %s failed UnpackLayer to %s", err, dest)
|
|
}
|
|
|
|
return s, nil
|
|
}
|