chore(refactor): move xfs and mount code out of zfs package

Signed-off-by: Pawan <pawan@mayadata.io>

pkg/mount/mount_utils.go

@@ -0,0 +1,64 @@
+/*
+Copyright 2020 The OpenEBS Authors
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package mount
+
+import (
+	"k8s.io/kubernetes/pkg/util/mount"
+)
+
+// GetMounts gets mountpoints for the specified volume
+func GetMounts(dev string) ([]string, error) {
+
+	var (
+		currentMounts []string
+		err           error
+		mountList     []mount.MountPoint
+	)
+
+	mounter := mount.New("")
+	// Get list of mounted paths present with the node
+	if mountList, err = mounter.List(); err != nil {
+		return nil, err
+	}
+	for _, mntInfo := range mountList {
+		if mntInfo.Device == dev {
+			currentMounts = append(currentMounts, mntInfo.Path)
+		}
+	}
+	return currentMounts, nil
+}
+
+// IsMountPath returns true if path is a mount path
+func IsMountPath(path string) bool {
+
+	var (
+		err       error
+		mountList []mount.MountPoint
+	)
+
+	mounter := mount.New("")
+	// Get list of mounted paths present with the node
+	if mountList, err = mounter.List(); err != nil {
+		return false
+	}
+	for _, mntInfo := range mountList {
+		if mntInfo.Path == path {
+			return true
+		}
+	}
+	return false
+}