@@ -30,7 +30,6 @@ import (

 	"os/exec"

 	"path"

 	"strings"

-	"syscall"

 )

 func init() {

@@ -327,7 +326,7 @@ func (a *Driver) aufsMount(ro []string, rw, target string) (err error) {

 		for _, layer := range ro {

 			branch := fmt.Sprintf("append:%s=ro+wh", layer)

-			if err = mount("none", target, "aufs", syscall.MS_REMOUNT, branch); err != nil {

+			if err = mount("none", target, "aufs", MsRemount, branch); err != nil {

 				return

 			}

 		}

@@ -2,6 +2,8 @@ package aufs

 import "errors"

+const MsRemount = 0

+

 func mount(source string, target string, fstype string, flags uintptr, data string) (err error) {

 	return errors.New("mount is not implemented on darwin")

 }

@@ -2,6 +2,8 @@ package aufs

 import "syscall"

+const MsRemount = syscall.MS_REMOUNT

+

 func mount(source string, target string, fstype string, flags uintptr, data string) error {

 	return syscall.Mount(source, target, fstype, flags, data)

 }