Change fsGroup to mounterArgs in volume.SetUp() to allow for future extension.

pkg/kubelet/kubelet_volumes_test.go

@@ -439,11 +439,11 @@ func (f *stubVolume) CanMount() error {
 	return nil
 }
 
-func (f *stubVolume) SetUp(fsGroup *int64) error {
+func (f *stubVolume) SetUp(mounterArgs volume.MounterArgs) error {
 	return nil
 }
 
-func (f *stubVolume) SetUpAt(dir string, fsGroup *int64) error {
+func (f *stubVolume) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	return nil
 }
 

pkg/volume/awsebs/aws_ebs.go

@@ -382,12 +382,12 @@ func (b *awsElasticBlockStoreMounter) CanMount() error {
 }
 
 // SetUp attaches the disk and bind mounts to the volume path.
-func (b *awsElasticBlockStoreMounter) SetUp(fsGroup *int64) error {
+func (b *awsElasticBlockStoreMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
 // SetUpAt attaches the disk and bind mounts to the volume path.
-func (b *awsElasticBlockStoreMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *awsElasticBlockStoreMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	// TODO: handle failed mounts here.
 	notMnt, err := b.mounter.IsLikelyNotMountPoint(dir)
 	klog.V(4).Infof("PersistentDisk set up: %s %v %v", dir, !notMnt, err)
@@ -440,7 +440,7 @@ func (b *awsElasticBlockStoreMounter) SetUpAt(dir string, fsGroup *int64) error
 	}
 
 	if !b.readOnly {
-		volume.SetVolumeOwnership(b, fsGroup)
+		volume.SetVolumeOwnership(b, mounterArgs.FsGroup)
 	}
 
 	klog.V(4).Infof("Successfully mounted %s", dir)

pkg/volume/awsebs/aws_ebs_test.go

@@ -136,7 +136,7 @@ func TestPlugin(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", path)
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	if _, err := os.Stat(path); err != nil {
@@ -367,7 +367,7 @@ func TestMountOptions(t *testing.T) {
 		t.Errorf("Got a nil Mounter")
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	mountOptions := fakeMounter.MountPoints[0].Opts

pkg/volume/azure_dd/azure_mounter.go

@@ -62,15 +62,15 @@ func (m *azureDiskMounter) CanMount() error {
 	return nil
 }
 
-func (m *azureDiskMounter) SetUp(fsGroup *int64) error {
+func (m *azureDiskMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return m.SetUpAt(m.GetPath(), fsGroup)
+	return m.SetUpAt(m.GetPath(), mounterArgs)
 }
 
 func (m *azureDiskMounter) GetPath() string {
 	return getPath(m.dataDisk.podUID, m.dataDisk.volumeName, m.plugin.host)
 }
 
-func (m *azureDiskMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (m *azureDiskMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	mounter := m.plugin.host.GetMounter(m.plugin.GetPluginName())
 	volumeSource, _, err := getVolumeSource(m.spec)
 
@@ -161,7 +161,7 @@ func (m *azureDiskMounter) SetUpAt(dir string, fsGroup *int64) error {
 	}
 
 	if volumeSource.ReadOnly == nil || !*volumeSource.ReadOnly {
-		volume.SetVolumeOwnership(m, fsGroup)
+		volume.SetVolumeOwnership(m, mounterArgs.FsGroup)
 	}
 
 	klog.V(2).Infof("azureDisk - successfully mounted disk %s on %s", diskName, dir)

pkg/volume/azure_file/azure_file.go

@@ -236,11 +236,11 @@ func (b *azureFileMounter) CanMount() error {
 }
 
 // SetUp attaches the disk and bind mounts to the volume path.
-func (b *azureFileMounter) SetUp(fsGroup *int64) error {
+func (b *azureFileMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
-func (b *azureFileMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *azureFileMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	notMnt, err := b.mounter.IsLikelyNotMountPoint(dir)
 	klog.V(4).Infof("AzureFile mount set up: %s %v %v", dir, !notMnt, err)
 	if err != nil && !os.IsNotExist(err) {
@@ -283,7 +283,7 @@ func (b *azureFileMounter) SetUpAt(dir string, fsGroup *int64) error {
 			options = append(options, "ro")
 		}
 		mountOptions = volutil.JoinMountOptions(b.mountOptions, options)
-		mountOptions = appendDefaultMountOptions(mountOptions, fsGroup)
+		mountOptions = appendDefaultMountOptions(mountOptions, mounterArgs.FsGroup)
 	}
 
 	err = b.mounter.Mount(source, dir, "cifs", mountOptions)

pkg/volume/azure_file/azure_file_test.go

@@ -155,7 +155,7 @@ func testPlugin(t *testing.T, tmpDir string, volumeHost volume.VolumeHost) {
 		t.Errorf("Got unexpected path: %s", path)
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	if _, err := os.Stat(path); err != nil {

pkg/volume/cephfs/cephfs.go

@@ -222,12 +222,12 @@ func (cephfsVolume *cephfsMounter) CanMount() error {
 }
 
 // SetUp attaches the disk and bind mounts to the volume path.
-func (cephfsVolume *cephfsMounter) SetUp(fsGroup *int64) error {
+func (cephfsVolume *cephfsMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return cephfsVolume.SetUpAt(cephfsVolume.GetPath(), fsGroup)
+	return cephfsVolume.SetUpAt(cephfsVolume.GetPath(), mounterArgs)
 }
 
 // SetUpAt attaches the disk and bind mounts to the volume path.
-func (cephfsVolume *cephfsMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (cephfsVolume *cephfsMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	notMnt, err := cephfsVolume.mounter.IsLikelyNotMountPoint(dir)
 	klog.V(4).Infof("CephFS mount set up: %s %v %v", dir, !notMnt, err)
 	if err != nil && !os.IsNotExist(err) {

pkg/volume/cephfs/cephfs_test.go

@@ -87,7 +87,7 @@ func TestPlugin(t *testing.T) {
 	if volumePath != volpath {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	if _, err := os.Stat(volumePath); err != nil {

pkg/volume/cinder/cinder.go

@@ -377,12 +377,12 @@ func (b *cinderVolumeMounter) CanMount() error {
 	return nil
 }
 
-func (b *cinderVolumeMounter) SetUp(fsGroup *int64) error {
+func (b *cinderVolumeMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
 // SetUp bind mounts to the volume path.
-func (b *cinderVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *cinderVolumeMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	klog.V(5).Infof("Cinder SetUp %s to %s", b.pdName, dir)
 
 	b.plugin.volumeLocks.LockKey(b.pdName)
@@ -442,7 +442,7 @@ func (b *cinderVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 	}
 
 	if !b.readOnly {
-		volume.SetVolumeOwnership(b, fsGroup)
+		volume.SetVolumeOwnership(b, mounterArgs.FsGroup)
 	}
 	klog.V(3).Infof("Cinder volume %s mounted to %s", b.pdName, dir)
 

pkg/volume/cinder/cinder_test.go

@@ -166,7 +166,7 @@ func TestPlugin(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", path)
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	if _, err := os.Stat(path); err != nil {

pkg/volume/configmap/configmap.go

@@ -183,11 +183,11 @@ func (b *configMapVolumeMounter) CanMount() error {
 	return nil
 }
 
-func (b *configMapVolumeMounter) SetUp(fsGroup *int64) error {
+func (b *configMapVolumeMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
-func (b *configMapVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *configMapVolumeMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	klog.V(3).Infof("Setting up volume %v for pod %v at %v", b.volName, b.pod.UID, dir)
 
 	// Wrap EmptyDir, let it do the setup.
@@ -224,7 +224,7 @@ func (b *configMapVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 	}
 
 	setupSuccess := false
-	if err := wrapped.SetUpAt(dir, fsGroup); err != nil {
+	if err := wrapped.SetUpAt(dir, mounterArgs); err != nil {
 		return err
 	}
 	if err := volumeutil.MakeNestedMountpoints(b.volName, dir, b.pod); err != nil {
@@ -259,9 +259,9 @@ func (b *configMapVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 		return err
 	}
 
-	err = volume.SetVolumeOwnership(b, fsGroup)
+	err = volume.SetVolumeOwnership(b, mounterArgs.FsGroup)
 	if err != nil {
-		klog.Errorf("Error applying volume ownership settings for group: %v", fsGroup)
+		klog.Errorf("Error applying volume ownership settings for group: %v", mounterArgs.FsGroup)
 		return err
 	}
 	setupSuccess = true

pkg/volume/configmap/configmap_test.go

@@ -365,8 +365,10 @@ func TestPlugin(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	fsGroup := int64(1001)
+	var mounterArgs volume.MounterArgs
-	err = mounter.SetUp(&fsGroup)
+	group := int64(1001)
+	mounterArgs.FsGroup = &group
+	err = mounter.SetUp(mounterArgs)
 	if err != nil {
 		t.Errorf("Failed to setup volume: %v", err)
 	}
@@ -423,8 +425,10 @@ func TestPluginReboot(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	fsGroup := int64(1001)
+	var mounterArgs volume.MounterArgs
-	err = mounter.SetUp(&fsGroup)
+	group := int64(1001)
+	mounterArgs.FsGroup = &group
+	err = mounter.SetUp(mounterArgs)
 	if err != nil {
 		t.Errorf("Failed to setup volume: %v", err)
 	}
@@ -485,8 +489,10 @@ func TestPluginOptional(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	fsGroup := int64(1001)
+	var mounterArgs volume.MounterArgs
-	err = mounter.SetUp(&fsGroup)
+	group := int64(1001)
+	mounterArgs.FsGroup = &group
+	err = mounter.SetUp(mounterArgs)
 	if err != nil {
 		t.Errorf("Failed to setup volume: %v", err)
 	}
@@ -582,8 +588,10 @@ func TestPluginKeysOptional(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	fsGroup := int64(1001)
+	var mounterArgs volume.MounterArgs
-	err = mounter.SetUp(&fsGroup)
+	group := int64(1001)
+	mounterArgs.FsGroup = &group
+	err = mounter.SetUp(mounterArgs)
 	if err != nil {
 		t.Errorf("Failed to setup volume: %v", err)
 	}
@@ -660,8 +668,10 @@ func TestInvalidConfigMapSetup(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	fsGroup := int64(1001)
+	var mounterArgs volume.MounterArgs
-	err = mounter.SetUp(&fsGroup)
+	group := int64(1001)
+	mounterArgs.FsGroup = &group
+	err = mounter.SetUp(mounterArgs)
 	if err == nil {
 		t.Errorf("Expected setup to fail")
 	}

pkg/volume/csi/csi_mounter.go

@@ -93,11 +93,11 @@ func (c *csiMountMgr) CanMount() error {
 	return nil
 }
 
-func (c *csiMountMgr) SetUp(fsGroup *int64) error {
+func (c *csiMountMgr) SetUp(mounterArgs volume.MounterArgs) error {
-	return c.SetUpAt(c.GetPath(), fsGroup)
+	return c.SetUpAt(c.GetPath(), mounterArgs)
 }
 
-func (c *csiMountMgr) SetUpAt(dir string, fsGroup *int64) error {
+func (c *csiMountMgr) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	klog.V(4).Infof(log("Mounter.SetUpAt(%s)", dir))
 
 	mounted, err := isDirMounted(c.plugin, dir)
@@ -268,7 +268,7 @@ func (c *csiMountMgr) SetUpAt(dir string, fsGroup *int64) error {
 	// if fstype is "", then skip fsgroup (could be indication of non-block filesystem)
 	// if fstype is provided and pv.AccessMode == ReadWriteOnly, then apply fsgroup
 
-	err = c.applyFSGroup(fsType, fsGroup)
+	err = c.applyFSGroup(fsType, mounterArgs.FsGroup)
 	if err != nil {
 		// attempt to rollback mount.
 		fsGrpErr := fmt.Errorf("applyFSGroup failed for vol %s: %v", c.volumeID, err)

pkg/volume/csi/csi_mounter_test.go

@@ -203,8 +203,10 @@ func MounterSetUpTests(t *testing.T, podInfoEnabled bool) {
 			}
 
 			// Mounter.SetUp()
+			var mounterArgs volume.MounterArgs
 			fsGroup := int64(2000)
-			if err := csiMounter.SetUp(&fsGroup); err != nil {
+			mounterArgs.FsGroup = &fsGroup
+			if err := csiMounter.SetUp(mounterArgs); err != nil {
 				t.Fatalf("mounter.Setup failed: %v", err)
 			}
 
@@ -344,7 +346,7 @@ func TestMounterSetUpSimple(t *testing.T) {
 			}
 
 			// Mounter.SetUp()
-			if err := csiMounter.SetUp(nil); err != nil {
+			if err := csiMounter.SetUp(volume.MounterArgs{}); err != nil {
 				t.Fatalf("mounter.Setup failed: %v", err)
 			}
 
@@ -475,7 +477,7 @@ func TestMounterSetUpWithInline(t *testing.T) {
 			}
 
 			// Mounter.SetUp()
-			if err := csiMounter.SetUp(nil); err != nil {
+			if err := csiMounter.SetUp(volume.MounterArgs{}); err != nil {
 				t.Fatalf("mounter.Setup failed: %v", err)
 			}
 
@@ -621,12 +623,14 @@ func TestMounterSetUpWithFSGroup(t *testing.T) {
 		}
 
 		// Mounter.SetUp()
+		var mounterArgs volume.MounterArgs
 		var fsGroupPtr *int64
 		if tc.setFsGroup {
 			fsGroup := tc.fsGroup
 			fsGroupPtr = &fsGroup
 		}
-		if err := csiMounter.SetUp(fsGroupPtr); err != nil {
+		mounterArgs.FsGroup = fsGroupPtr
+		if err := csiMounter.SetUp(mounterArgs); err != nil {
 			t.Fatalf("mounter.Setup failed: %v", err)
 		}
 

pkg/volume/csi/csi_test.go

@@ -268,7 +268,9 @@ func TestCSI_VolumeAll(t *testing.T) {
 
 			csiMounter := mounter.(*csiMountMgr)
 			csiMounter.csiClient = csiClient
-			if err := csiMounter.SetUp(fsGroup); err != nil {
+			var mounterArgs volume.MounterArgs
+			mounterArgs.FsGroup = fsGroup
+			if err := csiMounter.SetUp(mounterArgs); err != nil {
 				t.Fatalf("csiTest.VolumeAll mounter.Setup(fsGroup) failed: %s", err)
 			}
 			t.Log("csiTest.VolumeAll mounter.Setup(fsGroup) done OK")

pkg/volume/downwardapi/downwardapi.go

@@ -174,11 +174,11 @@ func (b *downwardAPIVolumeMounter) CanMount() error {
 // This function is not idempotent by design. We want the data to be refreshed periodically.
 // The internal sync interval of kubelet will drive the refresh of data.
 // TODO: Add volume specific ticker and refresh loop
-func (b *downwardAPIVolumeMounter) SetUp(fsGroup *int64) error {
+func (b *downwardAPIVolumeMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
-func (b *downwardAPIVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *downwardAPIVolumeMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	klog.V(3).Infof("Setting up a downwardAPI volume %v for pod %v/%v at %v", b.volName, b.pod.Namespace, b.pod.Name, dir)
 	// Wrap EmptyDir. Here we rely on the idempotency of the wrapped plugin to avoid repeatedly mounting
 	wrapped, err := b.plugin.host.NewWrapperMounter(b.volName, wrappedVolumeSpec(), b.pod, *b.opts)
@@ -194,7 +194,7 @@ func (b *downwardAPIVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 	}
 
 	setupSuccess := false
-	if err := wrapped.SetUpAt(dir, fsGroup); err != nil {
+	if err := wrapped.SetUpAt(dir, mounterArgs); err != nil {
 		klog.Errorf("Unable to setup downwardAPI volume %v for pod %v/%v: %s", b.volName, b.pod.Namespace, b.pod.Name, err.Error())
 		return err
 	}
@@ -231,9 +231,9 @@ func (b *downwardAPIVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 		return err
 	}
 
-	err = volume.SetVolumeOwnership(b, fsGroup)
+	err = volume.SetVolumeOwnership(b, mounterArgs.FsGroup)
 	if err != nil {
-		klog.Errorf("Error applying volume ownership settings for group: %v", fsGroup)
+		klog.Errorf("Error applying volume ownership settings for group: %v", mounterArgs.FsGroup)
 		return err
 	}
 

pkg/volume/downwardapi/downwardapi_test.go

@@ -253,7 +253,7 @@ func newDownwardAPITest(t *testing.T, name string, volumeFiles, podLabels, podAn
 
 	volumePath := mounter.GetPath()
 
-	err = mounter.SetUp(nil)
+	err = mounter.SetUp(volume.MounterArgs{})
 	if err != nil {
 		t.Errorf("Failed to setup volume: %v", err)
 	}
@@ -380,7 +380,7 @@ func (step reSetUp) run(test *downwardAPITest) {
 	}
 
 	// now re-run Setup
-	if err = test.mounter.SetUp(nil); err != nil {
+	if err = test.mounter.SetUp(volume.MounterArgs{}); err != nil {
 		test.t.Errorf("Failed to re-setup volume: %v", err)
 	}
 

pkg/volume/emptydir/empty_dir.go

@@ -193,12 +193,12 @@ func (ed *emptyDir) CanMount() error {
 }
 
 // SetUp creates new directory.
-func (ed *emptyDir) SetUp(fsGroup *int64) error {
+func (ed *emptyDir) SetUp(mounterArgs volume.MounterArgs) error {
-	return ed.SetUpAt(ed.GetPath(), fsGroup)
+	return ed.SetUpAt(ed.GetPath(), mounterArgs)
 }
 
 // SetUpAt creates new directory.
-func (ed *emptyDir) SetUpAt(dir string, fsGroup *int64) error {
+func (ed *emptyDir) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	notMnt, err := ed.mounter.IsLikelyNotMountPoint(dir)
 	// Getting an os.IsNotExist err from is a contingency; the directory
 	// may not exist yet, in which case, setup should run.
@@ -229,7 +229,7 @@ func (ed *emptyDir) SetUpAt(dir string, fsGroup *int64) error {
 		err = fmt.Errorf("unknown storage medium %q", ed.medium)
 	}
 
-	volume.SetVolumeOwnership(ed, fsGroup)
+	volume.SetVolumeOwnership(ed, mounterArgs.FsGroup)
 
 	if err == nil {
 		volumeutil.SetReady(ed.getMetaDir())

pkg/volume/emptydir/empty_dir_test.go

@@ -163,7 +163,7 @@ func doTestPlugin(t *testing.T, config pluginTestConfig) {
 		t.Errorf("Got unexpected path: %s", volPath)
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 

pkg/volume/fc/fc.go

@@ -371,13 +371,13 @@ func (b *fcDiskMounter) CanMount() error {
 	return nil
 }
 
-func (b *fcDiskMounter) SetUp(fsGroup *int64) error {
+func (b *fcDiskMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
-func (b *fcDiskMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *fcDiskMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	// diskSetUp checks mountpoints and prevent repeated calls
-	err := diskSetUp(b.manager, *b, dir, b.mounter, fsGroup)
+	err := diskSetUp(b.manager, *b, dir, b.mounter, mounterArgs.FsGroup)
 	if err != nil {
 		klog.Errorf("fc: failed to setup")
 	}

pkg/volume/fc/fc_test.go

@@ -179,7 +179,7 @@ func doTestPlugin(t *testing.T, spec *volume.Spec) {
 		t.Errorf("Unexpected path, expected %q, got: %q", expectedPath, path)
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	if _, err := os.Stat(path); err != nil {

pkg/volume/flexvolume/driver-call.go

@@ -51,7 +51,7 @@ const (
 	optionFSType         = "kubernetes.io/fsType"
 	optionReadWrite      = "kubernetes.io/readwrite"
 	optionKeySecret      = "kubernetes.io/secret"
-	optionFSGroup        = "kubernetes.io/fsGroup"
+	optionFSGroup        = "kubernetes.io/mounterArgs.FsGroup"
 	optionMountsDir      = "kubernetes.io/mountsDir"
 	optionPVorVolumeName = "kubernetes.io/pvOrVolumeName"
 

pkg/volume/flexvolume/mounter-defaults.go

@@ -26,7 +26,7 @@ type mounterDefaults flexVolumeMounter
 
 // SetUpAt is part of the volume.Mounter interface.
 // This implementation relies on the attacher's device mount path and does a bind mount to dir.
-func (f *mounterDefaults) SetUpAt(dir string, fsGroup *int64) error {
+func (f *mounterDefaults) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	klog.Warning(logPrefix(f.plugin), "using default SetUpAt to ", dir)
 
 	src, err := f.plugin.getDeviceMountPath(f.spec)

pkg/volume/flexvolume/mounter.go

@@ -39,12 +39,12 @@ var _ volume.Mounter = &flexVolumeMounter{}
 // Mounter interface
 
 // SetUp creates new directory.
-func (f *flexVolumeMounter) SetUp(fsGroup *int64) error {
+func (f *flexVolumeMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return f.SetUpAt(f.GetPath(), fsGroup)
+	return f.SetUpAt(f.GetPath(), mounterArgs)
 }
 
 // SetUpAt creates new directory.
-func (f *flexVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (f *flexVolumeMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	// Mount only once.
 	alreadyMounted, err := prepareForMount(f.mounter, dir)
 	if err != nil {
@@ -75,15 +75,15 @@ func (f *flexVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 	}
 
 	// Implicit parameters
-	if fsGroup != nil {
+	if mounterArgs.FsGroup != nil {
-		extraOptions[optionFSGroup] = strconv.FormatInt(int64(*fsGroup), 10)
+		extraOptions[optionFSGroup] = strconv.FormatInt(int64(*mounterArgs.FsGroup), 10)
 	}
 
 	call.AppendSpec(f.spec, f.plugin.host, extraOptions)
 
 	_, err = call.Run()
 	if isCmdNotSupportedErr(err) {
-		err = (*mounterDefaults)(f).SetUpAt(dir, fsGroup)
+		err = (*mounterDefaults)(f).SetUpAt(dir, mounterArgs)
 	}
 
 	if err != nil {
@@ -93,7 +93,7 @@ func (f *flexVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 
 	if !f.readOnly {
 		if f.plugin.capabilities.FSGroup {
-			volume.SetVolumeOwnership(f, fsGroup)
+			volume.SetVolumeOwnership(f, mounterArgs.FsGroup)
 		}
 	}
 

pkg/volume/flexvolume/mounter_test.go

@@ -23,6 +23,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/kubernetes/pkg/util/mount"
+	"k8s.io/kubernetes/pkg/volume"
 	"k8s.io/kubernetes/test/utils/harness"
 )
 
@@ -46,7 +47,7 @@ func TestSetUpAt(tt *testing.T) {
 	plugin, rootDir := testPlugin(t)
 	plugin.unsupportedCommands = []string{"unsupportedCmd"}
 	plugin.runner = fakeRunner(
-		// first call without fsGroup
+		// first call without mounterArgs.FsGroup
 		assertDriverCall(t, successOutput(), mountCmd, rootDir+"/mount-dir",
 			specJSON(plugin, spec, map[string]string{
 				optionKeyPodName:            "my-pod",
@@ -55,7 +56,7 @@ func TestSetUpAt(tt *testing.T) {
 				optionKeyServiceAccountName: "my-sa",
 			})),
 
-		// second test has fsGroup
+		// second test has mounterArgs.FsGroup
 		assertDriverCall(t, notSupportedOutput(), mountCmd, rootDir+"/mount-dir",
 			specJSON(plugin, spec, map[string]string{
 				optionFSGroup:               "42",
@@ -69,8 +70,10 @@ func TestSetUpAt(tt *testing.T) {
 	)
 
 	m, _ := plugin.newMounterInternal(spec, pod, mounter, plugin.runner)
-	m.SetUpAt(rootDir+"/mount-dir", nil)
+	var mounterArgs volume.MounterArgs
+	m.SetUpAt(rootDir+"/mount-dir", mounterArgs)
 
-	fsGroup := int64(42)
+	group := int64(42)
-	m.SetUpAt(rootDir+"/mount-dir", &fsGroup)
+	mounterArgs.FsGroup = &group
+	m.SetUpAt(rootDir+"/mount-dir", mounterArgs)
 }

pkg/volume/flocker/flocker.go

@@ -235,8 +235,8 @@ func (b *flockerVolumeMounter) GetPath() string {
 }
 
 // SetUp bind mounts the disk global mount to the volume path.
-func (b *flockerVolumeMounter) SetUp(fsGroup *int64) error {
+func (b *flockerVolumeMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
 // newFlockerClient uses environment variables and pod attributes to return a
@@ -277,7 +277,7 @@ control service:
    need to update the Primary UUID for this volume.
 5. Wait until the Primary UUID was updated or timeout.
 */
-func (b *flockerVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *flockerVolumeMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	var err error
 	if b.flockerClient == nil {
 		b.flockerClient, err = b.newFlockerClient()
@@ -365,7 +365,7 @@ func (b *flockerVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 	}
 
 	if !b.readOnly {
-		volume.SetVolumeOwnership(b, fsGroup)
+		volume.SetVolumeOwnership(b, mounterArgs.FsGroup)
 	}
 
 	klog.V(4).Infof("successfully mounted %s", dir)

pkg/volume/gcepd/gce_pd.go

@@ -354,12 +354,12 @@ func (b *gcePersistentDiskMounter) CanMount() error {
 }
 
 // SetUp bind mounts the disk global mount to the volume path.
-func (b *gcePersistentDiskMounter) SetUp(fsGroup *int64) error {
+func (b *gcePersistentDiskMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
 // SetUp bind mounts the disk global mount to the give volume path.
-func (b *gcePersistentDiskMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *gcePersistentDiskMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	// TODO: handle failed mounts here.
 	notMnt, err := b.mounter.IsLikelyNotMountPoint(dir)
 	klog.V(4).Infof("GCE PersistentDisk set up: Dir (%s) PD name (%q) Mounted (%t) Error (%v), ReadOnly (%t)", dir, b.pdName, !notMnt, err, b.readOnly)
@@ -419,7 +419,7 @@ func (b *gcePersistentDiskMounter) SetUpAt(dir string, fsGroup *int64) error {
 	}
 
 	if !b.readOnly {
-		volume.SetVolumeOwnership(b, fsGroup)
+		volume.SetVolumeOwnership(b, mounterArgs.FsGroup)
 	}
 
 	klog.V(4).Infof("Successfully mounted %s", dir)

pkg/volume/gcepd/gce_pd_test.go

@@ -141,7 +141,7 @@ func TestPlugin(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", path)
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	if _, err := os.Stat(path); err != nil {
@@ -279,7 +279,7 @@ func TestMountOptions(t *testing.T) {
 		t.Errorf("Got a nil Mounter")
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	mountOptions := fakeMounter.MountPoints[0].Opts

pkg/volume/git_repo/git_repo.go

@@ -179,12 +179,12 @@ func (b *gitRepoVolumeMounter) CanMount() error {
 }
 
 // SetUp creates new directory and clones a git repo.
-func (b *gitRepoVolumeMounter) SetUp(fsGroup *int64) error {
+func (b *gitRepoVolumeMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
 // SetUpAt creates new directory and clones a git repo.
-func (b *gitRepoVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *gitRepoVolumeMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	if volumeutil.IsReady(b.getMetaDir()) {
 		return nil
 	}
@@ -194,7 +194,7 @@ func (b *gitRepoVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 	if err != nil {
 		return err
 	}
-	if err := wrapped.SetUpAt(dir, fsGroup); err != nil {
+	if err := wrapped.SetUpAt(dir, mounterArgs); err != nil {
 		return err
 	}
 
@@ -240,7 +240,7 @@ func (b *gitRepoVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 		return fmt.Errorf("failed to exec 'git reset --hard': %s: %v", output, err)
 	}
 
-	volume.SetVolumeOwnership(b, fsGroup)
+	volume.SetVolumeOwnership(b, mounterArgs.FsGroup)
 
 	volumeutil.SetReady(b.getMetaDir())
 	return nil

pkg/volume/git_repo/git_repo_test.go

@@ -422,7 +422,7 @@ func doTestSetUp(scenario struct {
 	g := mounter.(*gitRepoVolumeMounter)
 	g.exec = &fake
 
-	g.SetUp(nil)
+	g.SetUp(volume.MounterArgs{})
 
 	if fake.CommandCalls != len(expecteds) {
 		allErrs = append(allErrs,

pkg/volume/glusterfs/glusterfs.go

@@ -275,11 +275,11 @@ func (b *glusterfsMounter) CanMount() error {
 }
 
 // SetUp attaches the disk and bind mounts to the volume path.
-func (b *glusterfsMounter) SetUp(fsGroup *int64) error {
+func (b *glusterfsMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
-func (b *glusterfsMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *glusterfsMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	notMnt, err := b.mounter.IsLikelyNotMountPoint(dir)
 	klog.V(4).Infof("mount setup: %s %v %v", dir, !notMnt, err)
 	if err != nil && !os.IsNotExist(err) {

pkg/volume/glusterfs/glusterfs_test.go

@@ -118,7 +118,7 @@ func doTestPlugin(t *testing.T, spec *volume.Spec) {
 	if volumePath != expectedPath {
 		t.Errorf("Unexpected path, expected %q, got: %q", expectedPath, volumePath)
 	}
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	if _, err := os.Stat(volumePath); err != nil {

pkg/volume/hostpath/host_path.go

@@ -222,7 +222,7 @@ func (b *hostPathMounter) CanMount() error {
 }
 
 // SetUp does nothing.
-func (b *hostPathMounter) SetUp(fsGroup *int64) error {
+func (b *hostPathMounter) SetUp(mounterArgs volume.MounterArgs) error {
 	err := validation.ValidatePathNoBacksteps(b.GetPath())
 	if err != nil {
 		return fmt.Errorf("invalid HostPath `%s`: %v", b.GetPath(), err)
@@ -235,7 +235,7 @@ func (b *hostPathMounter) SetUp(fsGroup *int64) error {
 }
 
 // SetUpAt does not make sense for host paths - probably programmer error.
-func (b *hostPathMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *hostPathMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	return fmt.Errorf("SetUpAt() does not make sense for host paths")
 }
 

pkg/volume/hostpath/host_path_test.go

@@ -217,7 +217,7 @@ func TestInvalidHostPath(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	err = mounter.SetUp(nil)
+	err = mounter.SetUp(volume.MounterArgs{})
 	expectedMsg := "invalid HostPath `/no/backsteps/allowed/..`: must not contain '..'"
 	if err.Error() != expectedMsg {
 		t.Fatalf("expected error `%s` but got `%s`", expectedMsg, err)
@@ -253,7 +253,7 @@ func TestPlugin(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", path)
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 

pkg/volume/iscsi/iscsi.go

@@ -330,13 +330,13 @@ func (b *iscsiDiskMounter) CanMount() error {
 	return nil
 }
 
-func (b *iscsiDiskMounter) SetUp(fsGroup *int64) error {
+func (b *iscsiDiskMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
-func (b *iscsiDiskMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *iscsiDiskMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	// diskSetUp checks mountpoints and prevent repeated calls
-	err := diskSetUp(b.manager, *b, dir, b.mounter, fsGroup)
+	err := diskSetUp(b.manager, *b, dir, b.mounter, mounterArgs.FsGroup)
 	if err != nil {
 		klog.Errorf("iscsi: failed to setup")
 	}

pkg/volume/iscsi/iscsi_test.go

@@ -175,7 +175,7 @@ func doTestPlugin(t *testing.T, spec *volume.Spec) {
 		t.Errorf("Unexpected path, expected %q, got: %q", expectedPath, path)
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	if _, err := os.Stat(path); err != nil {

pkg/volume/local/local.go

@@ -423,12 +423,12 @@ func (m *localVolumeMounter) CanMount() error {
 }
 
 // SetUp bind mounts the directory to the volume path
-func (m *localVolumeMounter) SetUp(fsGroup *int64) error {
+func (m *localVolumeMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return m.SetUpAt(m.GetPath(), fsGroup)
+	return m.SetUpAt(m.GetPath(), mounterArgs)
 }
 
 // SetUpAt bind mounts the directory to the volume path and sets up volume ownership
-func (m *localVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (m *localVolumeMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	m.plugin.volumeLocks.LockKey(m.globalPath)
 	defer m.plugin.volumeLocks.UnlockKey(m.globalPath)
 
@@ -452,7 +452,7 @@ func (m *localVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 		return nil
 	}
 	refs, err := m.mounter.GetMountRefs(m.globalPath)
-	if fsGroup != nil {
+	if mounterArgs.FsGroup != nil {
 		if err != nil {
 			klog.Errorf("cannot collect mounting information: %s %v", m.globalPath, err)
 			return err
@@ -461,7 +461,7 @@ func (m *localVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 		// Only count mounts from other pods
 		refs = m.filterPodMounts(refs)
 		if len(refs) > 0 {
-			fsGroupNew := int64(*fsGroup)
+			fsGroupNew := int64(*mounterArgs.FsGroup)
 			fsGroupOld, err := m.mounter.GetFSGroup(m.globalPath)
 			if err != nil {
 				return fmt.Errorf("failed to check fsGroup for %s (%v)", m.globalPath, err)
@@ -519,7 +519,7 @@ func (m *localVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 	if !m.readOnly {
 		// Volume owner will be written only once on the first volume mount
 		if len(refs) == 0 {
-			return volume.SetVolumeOwnership(m, fsGroup)
+			return volume.SetVolumeOwnership(m, mounterArgs.FsGroup)
 		}
 	}
 	return nil

pkg/volume/local/local_test.go

@@ -200,7 +200,7 @@ func TestInvalidLocalPath(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	err = mounter.SetUp(nil)
+	err = mounter.SetUp(volume.MounterArgs{})
 	expectedMsg := "invalid path: /no/backsteps/allowed/.. must not contain '..'"
 	if err.Error() != expectedMsg {
 		t.Fatalf("expected error `%s` but got `%s`", expectedMsg, err)
@@ -307,7 +307,7 @@ func TestMountUnmount(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", path)
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 
@@ -412,7 +412,9 @@ func testFSGroupMount(plug volume.VolumePlugin, pod *v1.Pod, tmpDir string, fsGr
 		return fmt.Errorf("Got unexpected path: %s", path)
 	}
 
-	if err := mounter.SetUp(&fsGroup); err != nil {
+	var mounterArgs volume.MounterArgs
+	mounterArgs.FsGroup = &fsGroup
+	if err := mounter.SetUp(mounterArgs); err != nil {
 		return err
 	}
 	return nil
@@ -517,7 +519,7 @@ func TestMountOptions(t *testing.T) {
 	fakeMounter := &mount.FakeMounter{}
 	mounter.(*localVolumeMounter).mounter = fakeMounter
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	mountOptions := fakeMounter.MountPoints[0].Opts

pkg/volume/nfs/nfs.go

@@ -233,11 +233,11 @@ func (nfsMounter *nfsMounter) GetAttributes() volume.Attributes {
 }
 
 // SetUp attaches the disk and bind mounts to the volume path.
-func (nfsMounter *nfsMounter) SetUp(fsGroup *int64) error {
+func (nfsMounter *nfsMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return nfsMounter.SetUpAt(nfsMounter.GetPath(), fsGroup)
+	return nfsMounter.SetUpAt(nfsMounter.GetPath(), mounterArgs)
 }
 
-func (nfsMounter *nfsMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (nfsMounter *nfsMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	notMnt, err := mount.IsNotMountPoint(nfsMounter.mounter, dir)
 	klog.V(4).Infof("NFS mount set up: %s %v %v", dir, !notMnt, err)
 	if err != nil && !os.IsNotExist(err) {

pkg/volume/nfs/nfs_test.go

@@ -122,7 +122,7 @@ func doTestPlugin(t *testing.T, spec *volume.Spec) {
 	if volumePath != expectedPath {
 		t.Errorf("Unexpected path, expected %q, got: %q", expectedPath, volumePath)
 	}
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	if _, err := os.Stat(volumePath); err != nil {

pkg/volume/photon_pd/photon_pd.go

@@ -200,12 +200,12 @@ func (b *photonPersistentDiskMounter) CanMount() error {
 }
 
 // SetUp attaches the disk and bind mounts to the volume path.
-func (b *photonPersistentDiskMounter) SetUp(fsGroup *int64) error {
+func (b *photonPersistentDiskMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
 // SetUp attaches the disk and bind mounts to the volume path.
-func (b *photonPersistentDiskMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *photonPersistentDiskMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	klog.V(4).Infof("Photon Persistent Disk setup %s to %s", b.pdID, dir)
 
 	// TODO: handle failed mounts here.

pkg/volume/photon_pd/photon_pd_test.go

@@ -128,7 +128,7 @@ func TestPlugin(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", path)
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	if _, err := os.Stat(path); err != nil {

pkg/volume/portworx/portworx.go

@@ -298,12 +298,12 @@ func (b *portworxVolumeMounter) CanMount() error {
 }
 
 // SetUp attaches the disk and bind mounts to the volume path.
-func (b *portworxVolumeMounter) SetUp(fsGroup *int64) error {
+func (b *portworxVolumeMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
 // SetUpAt attaches the disk and bind mounts to the volume path.
-func (b *portworxVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *portworxVolumeMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	notMnt, err := b.mounter.IsLikelyNotMountPoint(dir)
 	klog.Infof("Portworx Volume set up. Dir: %s %v %v", dir, !notMnt, err)
 	if err != nil && !os.IsNotExist(err) {
@@ -331,7 +331,7 @@ func (b *portworxVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 		return err
 	}
 	if !b.readOnly {
-		volume.SetVolumeOwnership(b, fsGroup)
+		volume.SetVolumeOwnership(b, mounterArgs.FsGroup)
 	}
 	klog.Infof("Portworx Volume %s setup at %s", b.volumeID, dir)
 	return nil

pkg/volume/portworx/portworx_test.go

@@ -163,7 +163,7 @@ func TestPlugin(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", path)
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	if _, err := os.Stat(path); err != nil {

pkg/volume/projected/projected.go

@@ -188,11 +188,11 @@ func (s *projectedVolumeMounter) CanMount() error {
 	return nil
 }
 
-func (s *projectedVolumeMounter) SetUp(fsGroup *int64) error {
+func (s *projectedVolumeMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return s.SetUpAt(s.GetPath(), fsGroup)
+	return s.SetUpAt(s.GetPath(), mounterArgs)
 }
 
-func (s *projectedVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (s *projectedVolumeMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	klog.V(3).Infof("Setting up volume %v for pod %v at %v", s.volName, s.pod.UID, dir)
 
 	wrapped, err := s.plugin.host.NewWrapperMounter(s.volName, wrappedVolumeSpec(), s.pod, *s.opts)
@@ -207,7 +207,7 @@ func (s *projectedVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 	}
 
 	setupSuccess := false
-	if err := wrapped.SetUpAt(dir, fsGroup); err != nil {
+	if err := wrapped.SetUpAt(dir, mounterArgs); err != nil {
 		return err
 	}
 
@@ -243,9 +243,9 @@ func (s *projectedVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 		return err
 	}
 
-	err = volume.SetVolumeOwnership(s, fsGroup)
+	err = volume.SetVolumeOwnership(s, mounterArgs.FsGroup)
 	if err != nil {
-		klog.Errorf("Error applying volume ownership settings for group: %v", fsGroup)
+		klog.Errorf("Error applying volume ownership settings for group: %v", mounterArgs.FsGroup)
 		return err
 	}
 	setupSuccess = true

pkg/volume/projected/projected_test.go

@@ -878,7 +878,7 @@ func TestPlugin(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	err = mounter.SetUp(nil)
+	err = mounter.SetUp(volume.MounterArgs{})
 	if err != nil {
 		t.Errorf("Failed to setup volume: %v", err)
 	}
@@ -943,7 +943,8 @@ func TestInvalidPathProjected(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	err = mounter.SetUp(nil)
+	var mounterArgs volume.MounterArgs
+	err = mounter.SetUp(mounterArgs)
 	if err == nil {
 		t.Errorf("Expected error while setting up secret")
 	}
@@ -994,7 +995,7 @@ func TestPluginReboot(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	err = mounter.SetUp(nil)
+	err = mounter.SetUp(volume.MounterArgs{})
 	if err != nil {
 		t.Errorf("Failed to setup volume: %v", err)
 	}
@@ -1046,7 +1047,7 @@ func TestPluginOptional(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	err = mounter.SetUp(nil)
+	err = mounter.SetUp(volume.MounterArgs{})
 	if err != nil {
 		t.Errorf("Failed to setup volume: %v", err)
 	}
@@ -1144,7 +1145,7 @@ func TestPluginOptionalKeys(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	err = mounter.SetUp(nil)
+	err = mounter.SetUp(volume.MounterArgs{})
 	if err != nil {
 		t.Errorf("Failed to setup volume: %v", err)
 	}

pkg/volume/quobyte/quobyte.go

@@ -237,12 +237,12 @@ func (mounter *quobyteMounter) CanMount() error {
 }
 
 // SetUp attaches the disk and bind mounts to the volume path.
-func (mounter *quobyteMounter) SetUp(fsGroup *int64) error {
+func (mounter *quobyteMounter) SetUp(mounterArgs volume.MounterArgs) error {
 	pluginDir := mounter.plugin.host.GetPluginDir(utilstrings.EscapeQualifiedName(quobytePluginName))
-	return mounter.SetUpAt(pluginDir, fsGroup)
+	return mounter.SetUpAt(pluginDir, mounterArgs)
 }
 
-func (mounter *quobyteMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (mounter *quobyteMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	// Check if Quobyte is already mounted on the host in the Plugin Dir
 	// if so we can use this mountpoint instead of creating a new one
 	// IsLikelyNotMountPoint wouldn't check the mount type

pkg/volume/quobyte/quobyte_test.go

@@ -101,7 +101,7 @@ func doTestPlugin(t *testing.T, spec *volume.Spec) {
 	if volumePath != fmt.Sprintf("%s/plugins/kubernetes.io~quobyte/root#root@vol", tmpDir) {
 		t.Errorf("Got unexpected path: %s expected: %s", volumePath, fmt.Sprintf("%s/plugins/kubernetes.io~quobyte/root#root@vol", tmpDir))
 	}
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	unmounter, err := plug.(*quobytePlugin).newUnmounterInternal("vol", types.UID("poduid"), &mount.FakeMounter{})

pkg/volume/rbd/rbd.go

@@ -825,14 +825,14 @@ func (b *rbdMounter) CanMount() error {
 	return nil
 }
 
-func (b *rbdMounter) SetUp(fsGroup *int64) error {
+func (b *rbdMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
-func (b *rbdMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *rbdMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	// diskSetUp checks mountpoints and prevent repeated calls
 	klog.V(4).Infof("rbd: attempting to setup at %s", dir)
-	err := diskSetUp(b.manager, *b, dir, b.mounter, fsGroup)
+	err := diskSetUp(b.manager, *b, dir, b.mounter, mounterArgs.FsGroup)
 	if err != nil {
 		klog.Errorf("rbd: failed to setup at %s %v", dir, err)
 	}

pkg/volume/rbd/rbd_test.go

@@ -305,7 +305,7 @@ func doTestPlugin(t *testing.T, c *testcase) {
 		t.Errorf("Unexpected path, expected %q, got: %q", c.expectedPodMountPath, path)
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	if _, err := os.Stat(path); err != nil {

pkg/volume/scaleio/sio_volume.go

@@ -77,12 +77,12 @@ func (v *sioVolume) CanMount() error {
 	return nil
 }
 
-func (v *sioVolume) SetUp(fsGroup *int64) error {
+func (v *sioVolume) SetUp(mounterArgs volume.MounterArgs) error {
-	return v.SetUpAt(v.GetPath(), fsGroup)
+	return v.SetUpAt(v.GetPath(), mounterArgs)
 }
 
 // SetUp bind mounts the disk global mount to the volume path.
-func (v *sioVolume) SetUpAt(dir string, fsGroup *int64) error {
+func (v *sioVolume) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	v.plugin.volumeMtx.LockKey(v.volSpecName)
 	defer v.plugin.volumeMtx.UnlockKey(v.volSpecName)
 
@@ -154,9 +154,9 @@ func (v *sioVolume) SetUpAt(dir string, fsGroup *int64) error {
 		return err
 	}
 
-	if !v.readOnly && fsGroup != nil {
+	if !v.readOnly && mounterArgs.FsGroup != nil {
 		klog.V(4).Info(log("applying  value FSGroup ownership"))
-		volume.SetVolumeOwnership(v, fsGroup)
+		volume.SetVolumeOwnership(v, mounterArgs.FsGroup)
 	}
 
 	klog.V(4).Info(log("successfully setup PV %s: volume %s mapped as %s mounted at %s", v.volSpecName, v.volName, devicePath, dir))

pkg/volume/scaleio/sio_volume_test.go

@@ -191,7 +191,7 @@ func TestVolumeMounterUnmounter(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", path)
 	}
 
-	if err := sioMounter.SetUp(nil); err != nil {
+	if err := sioMounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	if _, err := os.Stat(path); err != nil {
@@ -345,7 +345,7 @@ func TestVolumeProvisioner(t *testing.T) {
 		t.Fatalf("failed to create sio mgr: %v", err)
 	}
 	sioVol.sioMgr.client = sio
-	if err := sioMounter.SetUp(nil); err != nil {
+	if err := sioMounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Fatalf("Expected success, got: %v", err)
 	}
 

pkg/volume/secret/secret.go

@@ -178,11 +178,11 @@ func (b *secretVolumeMounter) CanMount() error {
 	return nil
 }
 
-func (b *secretVolumeMounter) SetUp(fsGroup *int64) error {
+func (b *secretVolumeMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
-func (b *secretVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *secretVolumeMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	klog.V(3).Infof("Setting up volume %v for pod %v at %v", b.volName, b.pod.UID, dir)
 
 	// Wrap EmptyDir, let it do the setup.
@@ -219,7 +219,7 @@ func (b *secretVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 	}
 
 	setupSuccess := false
-	if err := wrapped.SetUpAt(dir, fsGroup); err != nil {
+	if err := wrapped.SetUpAt(dir, mounterArgs); err != nil {
 		return err
 	}
 	if err := volumeutil.MakeNestedMountpoints(b.volName, dir, b.pod); err != nil {
@@ -254,9 +254,9 @@ func (b *secretVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 		return err
 	}
 
-	err = volume.SetVolumeOwnership(b, fsGroup)
+	err = volume.SetVolumeOwnership(b, mounterArgs.FsGroup)
 	if err != nil {
-		klog.Errorf("Error applying volume ownership settings for group: %v", fsGroup)
+		klog.Errorf("Error applying volume ownership settings for group: %v", mounterArgs.FsGroup)
 		return err
 	}
 	setupSuccess = true

pkg/volume/secret/secret_test.go

@@ -327,7 +327,7 @@ func TestPlugin(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	err = mounter.SetUp(nil)
+	err = mounter.SetUp(volume.MounterArgs{})
 	if err != nil {
 		t.Errorf("Failed to setup volume: %v", err)
 	}
@@ -401,7 +401,8 @@ func TestInvalidPathSecret(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	err = mounter.SetUp(nil)
+	var mounterArgs volume.MounterArgs
+	err = mounter.SetUp(mounterArgs)
 	if err == nil {
 		t.Errorf("Expected error while setting up secret")
 	}
@@ -452,7 +453,7 @@ func TestPluginReboot(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	err = mounter.SetUp(nil)
+	err = mounter.SetUp(volume.MounterArgs{})
 	if err != nil {
 		t.Errorf("Failed to setup volume: %v", err)
 	}
@@ -504,7 +505,7 @@ func TestPluginOptional(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	err = mounter.SetUp(nil)
+	err = mounter.SetUp(volume.MounterArgs{})
 	if err != nil {
 		t.Errorf("Failed to setup volume: %v", err)
 	}
@@ -602,7 +603,7 @@ func TestPluginOptionalKeys(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", volumePath)
 	}
 
-	err = mounter.SetUp(nil)
+	err = mounter.SetUp(volume.MounterArgs{})
 	if err != nil {
 		t.Errorf("Failed to setup volume: %v", err)
 	}

pkg/volume/storageos/storageos.go

@@ -345,7 +345,7 @@ func (b *storageosMounter) CanMount() error {
 }
 
 // SetUp attaches the disk and bind mounts to the volume path.
-func (b *storageosMounter) SetUp(fsGroup *int64) error {
+func (b *storageosMounter) SetUp(mounterArgs volume.MounterArgs) error {
 	// Need a namespace to find the volume, try pod's namespace if not set.
 	if b.volNamespace == "" {
 		klog.V(2).Infof("Setting StorageOS volume namespace to pod namespace: %s", b.podNamespace)
@@ -375,11 +375,11 @@ func (b *storageosMounter) SetUp(fsGroup *int64) error {
 	klog.V(4).Infof("Successfully mounted StorageOS volume %s into global mount directory", b.volName)
 
 	// Bind mount the volume into the pod
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
 // SetUp bind mounts the disk global mount to the give volume path.
-func (b *storageosMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *storageosMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	notMnt, err := b.mounter.IsLikelyNotMountPoint(dir)
 	klog.V(4).Infof("StorageOS volume set up: %s %v %v", dir, !notMnt, err)
 	if err != nil && !os.IsNotExist(err) {
@@ -433,7 +433,7 @@ func (b *storageosMounter) SetUpAt(dir string, fsGroup *int64) error {
 	}
 
 	if !b.readOnly {
-		volume.SetVolumeOwnership(b, fsGroup)
+		volume.SetVolumeOwnership(b, mounterArgs.FsGroup)
 	}
 	klog.V(4).Infof("StorageOS volume setup complete on %s", dir)
 	return nil

pkg/volume/storageos/storageos_test.go

@@ -208,7 +208,7 @@ func TestPlugin(t *testing.T) {
 		t.Errorf("Expected path: '%s' got: '%s'", expectedPath, volPath)
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}
 	if _, err := os.Stat(volPath); err != nil {

pkg/volume/testing/testing.go

@@ -765,11 +765,11 @@ func (fv *FakeVolume) CanMount() error {
 	return nil
 }
 
-func (fv *FakeVolume) SetUp(fsGroup *int64) error {
+func (fv *FakeVolume) SetUp(mounterArgs MounterArgs) error {
 	fv.Lock()
 	defer fv.Unlock()
 	fv.SetUpCallCount++
-	return fv.SetUpAt(fv.getPath(), fsGroup)
+	return fv.SetUpAt(fv.getPath(), mounterArgs)
 }
 
 func (fv *FakeVolume) GetSetUpCallCount() int {
@@ -778,7 +778,7 @@ func (fv *FakeVolume) GetSetUpCallCount() int {
 	return fv.SetUpCallCount
 }
 
-func (fv *FakeVolume) SetUpAt(dir string, fsGroup *int64) error {
+func (fv *FakeVolume) SetUpAt(dir string, mounterArgs MounterArgs) error {
 	return os.MkdirAll(dir, 0750)
 }
 

pkg/volume/util/operationexecutor/operation_generator.go

@@ -701,7 +701,10 @@ func (og *operationGenerator) GenerateMountVolumeFunc(
 		}
 
 		// Execute mount
-		mountErr := volumeMounter.SetUp(fsGroup)
+		mountErr := volumeMounter.SetUp(volume.MounterArgs{
+			FsGroup: fsGroup,
+			PodUID:  string(volumeToMount.Pod.UID),
+		})
 		if mountErr != nil {
 			// On failure, return error. Caller will log and retry.
 			return volumeToMount.GenerateError("MountVolume.SetUp failed", mountErr)

pkg/volume/volume.go

@@ -101,6 +101,12 @@ type Attributes struct {
 	SupportsSELinux bool
 }
 
+// MounterArgs provides more easily extensible arguments to Mounter
+type MounterArgs struct {
+	FsGroup *int64
+	PodUID  string
+}
+
 // Mounter interface provides methods to set up/mount the volume.
 type Mounter interface {
 	// Uses Interface to provide the path for Docker binds.
@@ -122,14 +128,14 @@ type Mounter interface {
 	// content should be owned by 'fsGroup' so that it can be
 	// accessed by the pod. This may be called more than once, so
 	// implementations must be idempotent.
-	SetUp(fsGroup *int64) error
+	SetUp(mounterArgs MounterArgs) error
 	// SetUpAt prepares and mounts/unpacks the volume to the
 	// specified directory path, which may or may not exist yet.
 	// The mount point and its content should be owned by
 	// 'fsGroup' so that it can be accessed by the pod. This may
 	// be called more than once, so implementations must be
 	// idempotent.
-	SetUpAt(dir string, fsGroup *int64) error
+	SetUpAt(dir string, mounterArgs MounterArgs) error
 	// GetAttributes returns the attributes of the mounter.
 	// This function is called after SetUp()/SetUpAt().
 	GetAttributes() Attributes

pkg/volume/vsphere_volume/vsphere_volume.go

@@ -208,8 +208,8 @@ func (b *vsphereVolumeMounter) GetAttributes() volume.Attributes {
 }
 
 // SetUp attaches the disk and bind mounts to the volume path.
-func (b *vsphereVolumeMounter) SetUp(fsGroup *int64) error {
+func (b *vsphereVolumeMounter) SetUp(mounterArgs volume.MounterArgs) error {
-	return b.SetUpAt(b.GetPath(), fsGroup)
+	return b.SetUpAt(b.GetPath(), mounterArgs)
 }
 
 // Checks prior to mount operations to verify that the required components (binaries, etc.)
@@ -220,7 +220,7 @@ func (b *vsphereVolumeMounter) CanMount() error {
 }
 
 // SetUp attaches the disk and bind mounts to the volume path.
-func (b *vsphereVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
+func (b *vsphereVolumeMounter) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
 	klog.V(5).Infof("vSphere volume setup %s to %s", b.volPath, dir)
 
 	// TODO: handle failed mounts here.
@@ -269,7 +269,7 @@ func (b *vsphereVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
 		os.Remove(dir)
 		return err
 	}
-	volume.SetVolumeOwnership(b, fsGroup)
+	volume.SetVolumeOwnership(b, mounterArgs.FsGroup)
 	klog.V(3).Infof("vSphere volume %s mounted to %s", b.volPath, dir)
 
 	return nil

pkg/volume/vsphere_volume/vsphere_volume_test.go

@@ -123,7 +123,7 @@ func TestPlugin(t *testing.T) {
 		t.Errorf("Got unexpected path: %s", path)
 	}
 
-	if err := mounter.SetUp(nil); err != nil {
+	if err := mounter.SetUp(volume.MounterArgs{}); err != nil {
 		t.Errorf("Expected success, got: %v", err)
 	}