moby/daemon/volumes_linux.go

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// +build !windows
package daemon
import (
"os"
"github.com/docker/docker/pkg/system"
)
// copyOwnership copies the permissions and uid:gid of the source file
// into the destination file
func copyOwnership(source, destination string) error {
stat, err := system.Stat(source)
if err != nil {
return err
}
if err := os.Chown(destination, int(stat.Uid()), int(stat.Gid())); err != nil {
return err
}
return os.Chmod(destination, os.FileMode(stat.Mode()))
}