Default mount options for all volumes

config.json

@@ -78,6 +78,13 @@
             "settable": [
                 "value"
             ]
+        },
+        {
+            "name": "OBJECTIVEFS_MOUNT_OPTIONS",
+            "value": "",
+            "settable": [
+                "value"
+            ]
         }
     ],
     "network": {

main.go

@@ -47,9 +47,10 @@ type ofsVolumeRt struct {
 
 type ofsDriver struct {
 	sync.RWMutex
-	volumedb *bolt.DB
-	volumeRt map[string]*ofsVolumeRt
-	defEnv   map[string]string
+	volumedb    *bolt.DB
+	volumeRt    map[string]*ofsVolumeRt
+	defEnv      map[string]string
+	defMountOpt string
 }
 
 var version = "1.0"
@@ -76,7 +77,7 @@ func (d *ofsDriver) Create(r *volume.CreateRequest) error {
 
 	v := &ofsVolume{}
 	v.Volume = &volume.Volume{Name: r.Name, Mountpoint: filepath.Join(volume.DefaultDockerRootDirectory, "objectivefs", r.Name), CreatedAt: time.Now().Format(time.RFC3339Nano)}
-	v.Opts = ""
+	v.Opts = d.defMountOpt
 	v.Fs = r.Name
 	env := make(map[string]string)
 	for id, val := range d.defEnv {
@@ -367,6 +368,8 @@ func main() {
 		}
 	}
 
+	defMountOpt := os.Getenv("OBJECTIVEFS_MOUNT_OPTIONS")
+
 	db, err := bolt.Open("objectivefs.db", 0600, nil)
 	if err != nil {
 		log.Fatal(err)
@@ -380,7 +383,7 @@ func main() {
 		return nil
 	})
 
-	d := &ofsDriver{volumedb: db, volumeRt: make(map[string]*ofsVolumeRt), defEnv: defEnv}
+	d := &ofsDriver{volumedb: db, volumeRt: make(map[string]*ofsVolumeRt), defEnv: defEnv, defMountOpt: defMountOpt}
 	h := volume.NewHandler(d)
 	u, _ := user.Lookup("root")
 	gid, _ := strconv.Atoi(u.Gid)