func CanonicalTarNameForPath(p string) (string, error) {
	return p, nil  
}
CanonicalTarNameForPath returns platform-specific filepath
to canonical posix-style path for tar archival. p is relative
path.
package archive
import (
	"archive/tar"
	"errors"
	"os"
	"syscall"
	"github.com/docker/docker/pkg/system"
)