Retrieve the backupPath from the storage provider itself

src/storage/filesystem.js

@@ -1,6 +1,8 @@
 'use strict';
 
 exports = module.exports = {
+    getBackupPath: getBackupPath,
+
     upload: upload,
     download: download,
 
@@ -28,6 +30,12 @@ var assert = require('assert'),
     shell = require('../shell.js');
 
 // storage api
+function getBackupPath(apiConfig) {
+    assert.strictEqual(typeof apiConfig, 'object');
+
+    return apiConfig.backupFolder;
+}
+
 function upload(apiConfig, backupFilePath, sourceStream, callback) {
     assert.strictEqual(typeof apiConfig, 'object');
     assert.strictEqual(typeof backupFilePath, 'string');