Merge pull request #673 from owncloud/filesystem

Filecache rewrite

61 files changed, 1519 insertions, 777 deletions

diff --git a/apps/files/ajax/delete.php b/apps/files/ajax/delete.php
index 575b8c8d9ea..da7e9d6b2aa 100644
--- a/apps/files/ajax/delete.php
+++ b/apps/files/ajax/delete.php
@@ -12,10 +12,12 @@ $files = isset($_POST["file"]) ? stripslashes($_POST["file"]) : stripslashes($_P
 
 $files = json_decode($files);
 $filesWithError = '';
+
 $success = true;
+
 //Now delete
 foreach ($files as $file) {
-	if (!OC_Files::delete($dir, $file)) {
+	if (($dir === '' && $file === 'Shared') || !\OC\Files\Filesystem::unlink($dir . '/' . $file)) {
 		$filesWithError .= $file . "\n";
 		$success = false;
 	}
diff --git a/apps/files/ajax/list.php b/apps/files/ajax/list.php
index cade7e872b3..878e4cb2159 100644
--- a/apps/files/ajax/list.php
+++ b/apps/files/ajax/list.php
@@ -32,7 +32,7 @@ if($doBreadcrumb) {
 
 // make filelist
 $files = array();
-foreach( OC_Files::getdirectorycontent( $dir ) as $i ) {
+foreach( \OC\Files\Filesystem::getDirectoryContent( $dir ) as $i ) {
 	$i["date"] = OCP\Util::formatDate($i["mtime"] );
 	$files[] = $i;
 }
diff --git a/apps/files/ajax/move.php b/apps/files/ajax/move.php
index 74374c57b8b..99e43ed23be 100644
--- a/apps/files/ajax/move.php
+++ b/apps/files/ajax/move.php
@@ -11,15 +11,19 @@ $dir = stripslashes($_POST["dir"]);
 $file = stripslashes($_POST["file"]);
 $target = stripslashes(rawurldecode($_POST["target"]));
 
-$l=OC_L10N::get('files');
-
-if(OC_Filesystem::file_exists($target . '/' . $file)) {
-	OCP\JSON::error(array("data" => array( "message" => $l->t("Could not move %s - File with this name already exists", array($file)) )));
+if(\OC\Files\Filesystem::file_exists($target . '/' . $file)) {
+	OCP\JSON::error(array("data" => array( "message" => "Could not move $file - File with this name already exists" )));
 	exit;
 }
 
-if(OC_Files::move($dir, $file, $target, $file)) {
-	OCP\JSON::success(array("data" => array( "dir" => $dir, "files" => $file )));
-} else {
-	OCP\JSON::error(array("data" => array( "message" => $l->t("Could not move %s", array($file)) )));
+if ($dir != '' || $file != 'Shared') {
+	$targetFile = \OC\Files\Filesystem::normalizePath($dir . '/' . $file);
+	$sourceFile = \OC\Files\Filesystem::normalizePath($target . '/' . $file);
+	if(\OC\Files\Filesystem::rename($sourceFile, $targetFile)) {
+		OCP\JSON::success(array("data" => array( "dir" => $dir, "files" => $file )));
+	} else {
+		OCP\JSON::error(array("data" => array( "message" => "Could not move $file" )));
+	}
+}else{
+	OCP\JSON::error(array("data" => array( "message" => "Could not move $file" )));
 }
diff --git a/apps/files/ajax/newfile.php b/apps/files/ajax/newfile.php
index 2bac9bb20ba..38714f34a63 100644
--- a/apps/files/ajax/newfile.php
+++ b/apps/files/ajax/newfile.php
@@ -63,13 +63,12 @@ if($source) {
 	$ctx = stream_context_create(null, array('notification' =>'progress'));
 	$sourceStream=fopen($source, 'rb', false, $ctx);
 	$target=$dir.'/'.$filename;
-	$result=OC_Filesystem::file_put_contents($target, $sourceStream);
+	$result=\OC\Files\Filesystem::file_put_contents($target, $sourceStream);
 	if($result) {
-		$target = OC_Filesystem::normalizePath($target);
-		$meta = OC_FileCache::get($target);
+		$meta = \OC\Files\Filesystem::getFileInfo($target);
 		$mime=$meta['mimetype'];
-		$id = OC_FileCache::getId($target);
-		$eventSource->send('success', array('mime'=>$mime, 'size'=>OC_Filesystem::filesize($target), 'id' => $id));
+		$id = $meta['fileid'];
+		$eventSource->send('success', array('mime'=>$mime, 'size'=>\OC\Files\Filesystem::filesize($target), 'id' => $id));
 	} else {
 		$eventSource->send('error', "Error while downloading ".$source. ' to '.$target);
 	}
@@ -77,15 +76,15 @@ if($source) {
 	exit();
 } else {
 	if($content) {
-		if(OC_Filesystem::file_put_contents($dir.'/'.$filename, $content)) {
-			$meta = OC_FileCache::get($dir.'/'.$filename);
-			$id = OC_FileCache::getId($dir.'/'.$filename);
+		if(\OC\Files\Filesystem::file_put_contents($dir.'/'.$filename, $content)) {
+			$meta = \OC\Files\Filesystem::getFileInfo($dir.'/'.$filename);
+			$id = $meta['fileid'];
 			OCP\JSON::success(array("data" => array('content'=>$content, 'id' => $id)));
 			exit();
 		}
-	}elseif(OC_Files::newFile($dir, $filename, 'file')) {
-		$meta = OC_FileCache::get($dir.'/'.$filename);
-		$id = OC_FileCache::getId($dir.'/'.$filename);
+	}elseif(\OC\Files\Filesystem::touch($dir . '/' . $filename)) {
+		$meta = \OC\Files\Filesystem::getFileInfo($dir.'/'.$filename);
+		$id = $meta['fileid'];
 		OCP\JSON::success(array("data" => array('content'=>$content, 'id' => $id)));
 		exit();
 	}
diff --git a/apps/files/ajax/newfolder.php b/apps/files/ajax/newfolder.php
index 0f1f2f14eb0..e26e1238bc6 100644
--- a/apps/files/ajax/newfolder.php
+++ b/apps/files/ajax/newfolder.php
@@ -19,13 +19,14 @@ if(strpos($foldername, '/')!==false) {
 	exit();
 }
 
-if(OC_Files::newFile($dir, stripslashes($foldername), 'dir')) {
+if(\OC\Files\Filesystem::mkdir($dir . '/' . stripslashes($foldername))) {
 	if ( $dir != '/') {
 		$path = $dir.'/'.$foldername;
 	} else {
 		$path = '/'.$foldername;
 	}
-	$id = OC_FileCache::getId($path);
+	$meta = \OC\Files\Filesystem::getFileInfo($path);
+	$id = $meta['fileid'];
 	OCP\JSON::success(array("data" => array('id'=>$id)));
 	exit();
 }
diff --git a/apps/files/ajax/rawlist.php b/apps/files/ajax/rawlist.php
index e0aa0bdac52..1cd2944483c 100644
--- a/apps/files/ajax/rawlist.php
+++ b/apps/files/ajax/rawlist.php
@@ -15,7 +15,7 @@ $mimetype = isset($_GET['mimetype']) ? $_GET['mimetype'] : '';
 
 // make filelist
 $files = array();
-foreach( OC_Files::getdirectorycontent( $dir, $mimetype ) as $i ) {
+foreach( \OC\Files\Filesystem::getDirectoryContent( $dir, $mimetype ) as $i ) {
 	$i["date"] = OCP\Util::formatDate($i["mtime"] );
 	$i['mimetype_icon'] = $i['type'] == 'dir' ? \mimetype_icon('dir'): \mimetype_icon($i['mimetype']);
 	$files[] = $i;
diff --git a/apps/files/ajax/rename.php b/apps/files/ajax/rename.php
index 89b4d4bba73..970aaa638da 100644
--- a/apps/files/ajax/rename.php
+++ b/apps/files/ajax/rename.php
@@ -11,10 +11,14 @@ $dir = stripslashes($_GET["dir"]);
 $file = stripslashes($_GET["file"]);
 $newname = stripslashes($_GET["newname"]);
 
-// Delete
-if( $newname !== '.' and OC_Files::move( $dir, $file, $dir, $newname )) {
-	OCP\JSON::success(array("data" => array( "dir" => $dir, "file" => $file, "newname" => $newname )));
-} else {
-	$l=OC_L10N::get('files');
-	OCP\JSON::error(array("data" => array( "message" => $l->t("Unable to rename file") )));
+if ( $newname !== '.' and ($dir != '' || $file != 'Shared') and $newname !== '.') {
+	$targetFile = \OC\Files\Filesystem::normalizePath($dir . '/' . $newname);
+	$sourceFile = \OC\Files\Filesystem::normalizePath($dir . '/' . $file);
+	if(\OC\Files\Filesystem::rename($sourceFile, $targetFile)) {
+		OCP\JSON::success(array("data" => array( "dir" => $dir, "file" => $file, "newname" => $newname )));
+	} else {
+		OCP\JSON::error(array("data" => array( "message" => "Unable to rename file" )));
+	}
+}else{
+	OCP\JSON::error(array("data" => array( "message" => "Unable to rename file" )));
 }
diff --git a/apps/files/ajax/scan.php b/apps/files/ajax/scan.php
index a819578e309..391b98608bd 100644
--- a/apps/files/ajax/scan.php
+++ b/apps/files/ajax/scan.php
@@ -1,44 +1,71 @@
 <?php
+set_time_limit(0); //scanning can take ages
+session_write_close();
 
-set_time_limit(0);//scanning can take ages
+$force = (isset($_GET['force']) and ($_GET['force'] === 'true'));
+$dir = isset($_GET['dir']) ? $_GET['dir'] : '';
 
-$force=isset($_GET['force']) and $_GET['force']=='true';
-$dir=isset($_GET['dir'])?$_GET['dir']:'';
-$checkOnly=isset($_GET['checkonly']) and $_GET['checkonly']=='true';
+$eventSource = new OC_EventSource();
+ScanListener::$eventSource = $eventSource;
+ScanListener::$view = \OC\Files\Filesystem::getView();
 
-$eventSource=false;
-if(!$checkOnly) {
-	$eventSource=new OC_EventSource();
-}
+OC_Hook::connect('\OC\Files\Cache\Scanner', 'scan_folder', 'ScanListener', 'folder');
+OC_Hook::connect('\OC\Files\Cache\Scanner', 'scan_file', 'ScanListener', 'file');
 
-session_write_close();
+$absolutePath = \OC\Files\Filesystem::getView()->getAbsolutePath($dir);
 
-//create the file cache if necessary
-if($force or !OC_FileCache::inCache('')) {
-	if(!$checkOnly) {
-		OCP\DB::beginTransaction();
+$mountPoints = \OC\Files\Filesystem::getMountPoints($absolutePath);
+$mountPoints[] = \OC\Files\Filesystem::getMountPoint($absolutePath);
+$mountPoints = array_reverse($mountPoints); //start with the mount point of $dir
 
-		if(OC_Cache::isFast()) {
-			OC_Cache::clear('fileid/'); //make sure the old fileid's don't mess things up
+foreach ($mountPoints as $mountPoint) {
+	$storage = \OC\Files\Filesystem::getStorage($mountPoint);
+	if ($storage) {
+		ScanListener::$mountPoints[$storage->getId()] = $mountPoint;
+		$scanner = $storage->getScanner();
+		if ($force) {
+			$scanner->scan('');
+		} else {
+			$scanner->backgroundScan();
 		}
-
-		OC_FileCache::scan($dir, $eventSource);
-		OC_FileCache::clean();
-		OCP\DB::commit();
-		$eventSource->send('success', true);
-	} else {
-		OCP\JSON::success(array('data'=>array('done'=>true)));
-		exit;
 	}
-} else {
-	if($checkOnly) {
-		OCP\JSON::success(array('data'=>array('done'=>false)));
-		exit;
+}
+
+$eventSource->send('done', ScanListener::$fileCount);
+$eventSource->close();
+
+class ScanListener {
+
+	static public $fileCount = 0;
+	static public $lastCount = 0;
+
+	/**
+	 * @var \OC\Files\View $view
+	 */
+	static public $view;
+
+	/**
+	 * @var array $mountPoints map storage ids to mountpoints
+	 */
+	static public $mountPoints = array();
+
+	/**
+	 * @var \OC_EventSource event source to pass events to
+	 */
+	static public $eventSource;
+
+	static function folder($params) {
+		$internalPath = $params['path'];
+		$mountPoint = self::$mountPoints[$params['storage']];
+		$path = self::$view->getRelativePath($mountPoint . $internalPath);
+		self::$eventSource->send('folder', $path);
 	}
-	if(isset($eventSource)) {
-		$eventSource->send('success', false);
-	} else {
-		exit;
+
+	static function file() {
+		self::$fileCount++;
+		if (self::$fileCount > self::$lastCount + 20) { //send a count update every 20 files
+			self::$lastCount = self::$fileCount;
+			self::$eventSource->send('count', self::$fileCount);
+		}
 	}
 }
-$eventSource->close();
diff --git a/apps/files/ajax/upgrade.php b/apps/files/ajax/upgrade.php
new file mode 100644
index 00000000000..7237b02c0b0
--- /dev/null
+++ b/apps/files/ajax/upgrade.php
@@ -0,0 +1,44 @@
+<?php
+set_time_limit(0); //scanning can take ages
+session_write_close();
+
+$user = OC_User::getUser();
+$eventSource = new OC_EventSource();
+$listener = new UpgradeListener($eventSource);
+$legacy = new \OC\Files\Cache\Legacy($user);
+
+if ($legacy->hasItems()) {
+	OC_Hook::connect('\OC\Files\Cache\Upgrade', 'migrate_path', $listener, 'upgradePath');
+
+	OC_DB::beginTransaction();
+	$upgrade = new \OC\Files\Cache\Upgrade($legacy);
+	$count = $legacy->getCount();
+	$eventSource->send('total', $count);
+	$upgrade->upgradePath('/' . $user . '/files');
+	OC_DB::commit();
+}
+\OC\Files\Cache\Upgrade::upgradeDone($user);
+$eventSource->send('done', true);
+$eventSource->close();
+
+class UpgradeListener {
+	/**
+	 * @var OC_EventSource $eventSource
+	 */
+	private $eventSource;
+
+	private $count = 0;
+	private $lastSend = 0;
+
+	public function __construct($eventSource) {
+		$this->eventSource = $eventSource;
+	}
+
+	public function upgradePath($path) {
+		$this->count++;
+		if ($this->count > ($this->lastSend + 5)) {
+			$this->lastSend = $this->count;
+			$this->eventSource->send('count', $this->count);
+		}
+	}
+}
diff --git a/apps/files/ajax/upload.php b/apps/files/ajax/upload.php
index 415524be629..9ecc1a6c2f4 100644
--- a/apps/files/ajax/upload.php
+++ b/apps/files/ajax/upload.php
@@ -21,13 +21,13 @@ if (!isset($_FILES['files'])) {
 foreach ($_FILES['files']['error'] as $error) {
 	if ($error != 0) {
 		$errors = array(
-			UPLOAD_ERR_OK         => $l->t('There is no error, the file uploaded with success'),
-			UPLOAD_ERR_INI_SIZE   => $l->t('The uploaded file exceeds the upload_max_filesize directive in php.ini: ')
+			UPLOAD_ERR_OK => $l->t('There is no error, the file uploaded with success'),
+			UPLOAD_ERR_INI_SIZE => $l->t('The uploaded file exceeds the upload_max_filesize directive in php.ini: ')
 				. ini_get('upload_max_filesize'),
-			UPLOAD_ERR_FORM_SIZE  => $l->t('The uploaded file exceeds the MAX_FILE_SIZE directive that was specified'
+			UPLOAD_ERR_FORM_SIZE => $l->t('The uploaded file exceeds the MAX_FILE_SIZE directive that was specified'
 				. ' in the HTML form'),
-			UPLOAD_ERR_PARTIAL    => $l->t('The uploaded file was only partially uploaded'),
-			UPLOAD_ERR_NO_FILE    => $l->t('No file was uploaded'),
+			UPLOAD_ERR_PARTIAL => $l->t('The uploaded file was only partially uploaded'),
+			UPLOAD_ERR_NO_FILE => $l->t('No file was uploaded'),
 			UPLOAD_ERR_NO_TMP_DIR => $l->t('Missing a temporary folder'),
 			UPLOAD_ERR_CANT_WRITE => $l->t('Failed to write to disk'),
 		);
@@ -40,12 +40,17 @@ $files = $_FILES['files'];
 $dir = $_POST['dir'];
 $error = '';
 
+$maxUploadFilesize = OCP\Util::maxUploadFilesize($dir);
+$maxHumanFilesize = OCP\Util::humanFileSize($maxUploadFilesize);
+
 $totalSize = 0;
 foreach ($files['size'] as $size) {
 	$totalSize += $size;
 }
-if ($totalSize > OC_Filesystem::free_space($dir)) {
-	OCP\JSON::error(array('data' => array_merge(array('message' => $l->t('Not enough storage available')), $storageStats)));
+if ($totalSize > \OC\Files\Filesystem::free_space($dir)) {
+	OCP\JSON::error(array('data' => array('message' => $l->t('Not enough space available'),
+		'uploadMaxFilesize' => $maxUploadFilesize,
+		'maxHumanFilesize' => $maxHumanFilesize)));
 	exit();
 }
 
@@ -55,19 +60,19 @@ if (strpos($dir, '..') === false) {
 	for ($i = 0; $i < $fileCount; $i++) {
 		$target = OCP\Files::buildNotExistingFileName(stripslashes($dir), $files['name'][$i]);
 		// $path needs to be normalized - this failed within drag'n'drop upload to a sub-folder
-		$target = OC_Filesystem::normalizePath($target);
-		if (is_uploaded_file($files['tmp_name'][$i]) and OC_Filesystem::fromTmpFile($files['tmp_name'][$i], $target)) {
-			$meta = OC_FileCache::get($target);
-			$id = OC_FileCache::getId($target);
-
+		$target = \OC\Files\Filesystem::normalizePath($target);
+		if (is_uploaded_file($files['tmp_name'][$i]) and \OC\Files\Filesystem::fromTmpFile($files['tmp_name'][$i], $target)) {
+			$meta = \OC\Files\Filesystem::getFileInfo($target);
 			// updated max file size after upload
 			$storageStats = \OCA\files\lib\Helper::buildFileStorageStatistics($dir);
 
-			$result[] = array_merge(array('status' => 'success',
-										  'mime'   => $meta['mimetype'],
-										  'size'   => $meta['size'],
-										  'id'     => $id,
-										  'name'   => basename($target)), $storageStats
+			$result[] = array('status' => 'success',
+				'mime' => $meta['mimetype'],
+				'size' => $meta['size'],
+				'id' => $meta['fileid'],
+				'name' => basename($target),
+				'uploadMaxFilesize' => $maxUploadFilesize,
+				'maxHumanFilesize' => $maxHumanFilesize
 			);
 		}
 	}
diff --git a/apps/files/appinfo/app.php b/apps/files/appinfo/app.php
index 108f02930e2..ab2f3b01a29 100644
--- a/apps/files/appinfo/app.php
+++ b/apps/files/appinfo/app.php
@@ -1,5 +1,5 @@
 <?php
-$l=OC_L10N::get('files');
+$l = OC_L10N::get('files');
 
 OCP\App::registerAdmin('files', 'admin');
 
diff --git a/apps/files/appinfo/filesync.php b/apps/files/appinfo/filesync.php
index cbed56a6de5..47884a4f15e 100644
--- a/apps/files/appinfo/filesync.php
+++ b/apps/files/appinfo/filesync.php
@@ -43,7 +43,7 @@ if ($type != 'oc_chunked') {
 	die;
 }
 
-if (!OC_Filesystem::is_file($file)) {
+if (!\OC\Files\Filesystem::is_file($file)) {
 	OC_Response::setStatus(OC_Response::STATUS_NOT_FOUND);
 	die;
 }
@@ -51,7 +51,7 @@ if (!OC_Filesystem::is_file($file)) {
 switch($_SERVER['REQUEST_METHOD']) {
 	case 'PUT':
 		$input = fopen("php://input", "r");
-		$org_file = OC_Filesystem::fopen($file, 'rb');
+		$org_file = \OC\Files\Filesystem::fopen($file, 'rb');
 		$info = array(
 			'name' => basename($file),
 		);
diff --git a/apps/files/appinfo/info.xml b/apps/files/appinfo/info.xml
index 0a1b196b06f..7c82c839dab 100644
--- a/apps/files/appinfo/info.xml
+++ b/apps/files/appinfo/info.xml
@@ -5,7 +5,7 @@
 	<description>File Management</description>
 	<licence>AGPL</licence>
 	<author>Robin Appelman</author>
-	<require>4.9</require>
+	<require>4.91</require>
 	<shipped>true</shipped>
 	<standalone/>
 	<default_enable/>
diff --git a/apps/files/appinfo/version b/apps/files/appinfo/version
index 0664a8fd291..2bf1ca5f549 100644
--- a/apps/files/appinfo/version
+++ b/apps/files/appinfo/version
@@ -1 +1 @@
-1.1.6
+1.1.7
diff --git a/apps/files/css/files.css b/apps/files/css/files.css
index 9ff550189db..748bc2e63a1 100644
--- a/apps/files/css/files.css
+++ b/apps/files/css/files.css
@@ -132,4 +132,12 @@ table.dragshadow td.filename {
 }
 table.dragshadow td.size {
 	padding-right:8px;
-}
\ No newline at end of file
+}
+#upgrade {
+	width: 400px;
+	position: absolute;
+	top: 200px;
+	left: 50%;
+	text-align: center;
+	margin-left: -200px;
+}
diff --git a/apps/files/download.php b/apps/files/download.php
index 1b70b1e38f8..e3fe24e45d7 100644
--- a/apps/files/download.php
+++ b/apps/files/download.php
@@ -26,7 +26,7 @@ OCP\User::checkLoggedIn();
 
 $filename = $_GET["file"];
 
-if(!OC_Filesystem::file_exists($filename)) {
+if(!\OC\Files\Filesystem::file_exists($filename)) {
 	header("HTTP/1.0 404 Not Found");
 	$tmpl = new OCP\Template( '', '404', 'guest' );
 	$tmpl->assign('file', $filename);
@@ -34,7 +34,7 @@ if(!OC_Filesystem::file_exists($filename)) {
 	exit;
 }
 
-$ftype=OC_Filesystem::getMimeType( $filename );
+$ftype=\OC\Files\Filesystem::getMimeType( $filename );
 
 header('Content-Type:'.$ftype);
 if ( preg_match( "/MSIE/", $_SERVER["HTTP_USER_AGENT"] ) ) {
@@ -44,7 +44,7 @@ if ( preg_match( "/MSIE/", $_SERVER["HTTP_USER_AGENT"] ) ) {
 										 . '; filename="' . rawurlencode( basename($filename) ) . '"' );
 }
 OCP\Response::disableCaching();
-header('Content-Length: '.OC_Filesystem::filesize($filename));
+header('Content-Length: '.\OC\Files\Filesystem::filesize($filename));
 
 OC_Util::obEnd();
-OC_Filesystem::readfile( $filename );
+\OC\Files\Filesystem::readfile( $filename );
diff --git a/apps/files/index.php b/apps/files/index.php
index e3197b9e3c0..d2cd76a7106 100644
--- a/apps/files/index.php
+++ b/apps/files/index.php
@@ -29,22 +29,39 @@ OCP\Util::addStyle('files', 'files');
 OCP\Util::addscript('files', 'jquery.iframe-transport');
 OCP\Util::addscript('files', 'jquery.fileupload');
 OCP\Util::addscript('files', 'jquery-visibility');
-OCP\Util::addscript('files', 'files');
 OCP\Util::addscript('files', 'filelist');
-OCP\Util::addscript('files', 'fileactions');
-OCP\Util::addscript('files', 'keyboardshortcuts');
 
 OCP\App::setActiveNavigationEntry('files_index');
 // Load the files
 $dir = isset($_GET['dir']) ? stripslashes($_GET['dir']) : '';
 // Redirect if directory does not exist
-if (!OC_Filesystem::is_dir($dir . '/')) {
+if (!\OC\Files\Filesystem::is_dir($dir . '/')) {
 	header('Location: ' . $_SERVER['SCRIPT_NAME'] . '');
 	exit();
 }
 
+function fileCmp($a, $b) {
+	if ($a['type'] == 'dir' and $b['type'] != 'dir') {
+		return -1;
+	} elseif ($a['type'] != 'dir' and $b['type'] == 'dir') {
+		return 1;
+	} else {
+		return strnatcasecmp($a['name'], $b['name']);
+	}
+}
+
 $files = array();
-foreach (OC_Files::getdirectorycontent($dir) as $i) {
+$user = OC_User::getUser();
+if (\OC\Files\Cache\Upgrade::needUpgrade($user)) { //dont load anything if we need to upgrade the cache
+	$content = array();
+	$needUpgrade = true;
+	$freeSpace = 0;
+} else {
+	$content = \OC\Files\Filesystem::getDirectoryContent($dir);
+	$freeSpace = \OC\Files\Filesystem::free_space($dir);
+	$needUpgrade = false;
+}
+foreach ($content as $i) {
 	$i['date'] = OCP\Util::formatDate($i['mtime']);
 	if ($i['type'] == 'file') {
 		$fileinfo = pathinfo($i['name']);
@@ -55,12 +72,12 @@ foreach (OC_Files::getdirectorycontent($dir) as $i) {
 			$i['extension'] = '';
 		}
 	}
-	if ($i['directory'] == '/') {
-		$i['directory'] = '';
-	}
+	$i['directory'] = $dir;
 	$files[] = $i;
 }
 
+usort($files, "fileCmp");
+
 // Make breadcrumb
 $breadcrumb = array();
 $pathtohere = '';
@@ -81,34 +98,42 @@ $breadcrumbNav = new OCP\Template('files', 'part.breadcrumb', '');
 $breadcrumbNav->assign('breadcrumb', $breadcrumb, false);
 $breadcrumbNav->assign('baseURL', OCP\Util::linkTo('files', 'index.php') . '?dir=', false);
 
-$maxUploadFilesize=OCP\Util::maxUploadFilesize($dir);
-
 $permissions = OCP\PERMISSION_READ;
-if (OC_Filesystem::isCreatable($dir . '/')) {
+if (\OC\Files\Filesystem::isCreatable($dir . '/')) {
 	$permissions |= OCP\PERMISSION_CREATE;
 }
-if (OC_Filesystem::isUpdatable($dir . '/')) {
+if (\OC\Files\Filesystem::isUpdatable($dir . '/')) {
 	$permissions |= OCP\PERMISSION_UPDATE;
 }
-if (OC_Filesystem::isDeletable($dir . '/')) {
+if (\OC\Files\Filesystem::isDeletable($dir . '/')) {
 	$permissions |= OCP\PERMISSION_DELETE;
 }
-if (OC_Filesystem::isSharable($dir . '/')) {
+if (\OC\Files\Filesystem::isSharable($dir . '/')) {
 	$permissions |= OCP\PERMISSION_SHARE;
 }
 
-// information about storage capacities
-$storageInfo=OC_Helper::getStorageInfo();
+if ($needUpgrade) {
+	OCP\Util::addscript('files', 'upgrade');
+	$tmpl = new OCP\Template('files', 'upgrade', 'user');
+	$tmpl->printPage();
+} else {
+	// information about storage capacities
+	$storageInfo=OC_Helper::getStorageInfo();
+	$maxUploadFilesize=OCP\Util::maxUploadFilesize($dir);
 
-$tmpl = new OCP\Template('files', 'index', 'user');
-$tmpl->assign('fileList', $list->fetchPage(), false);
-$tmpl->assign('breadcrumb', $breadcrumbNav->fetchPage(), false);
-$tmpl->assign('dir', OC_Filesystem::normalizePath($dir));
-$tmpl->assign('isCreatable', OC_Filesystem::isCreatable($dir . '/'));
-$tmpl->assign('permissions', $permissions);
-$tmpl->assign('files', $files);
-$tmpl->assign('uploadMaxFilesize', $maxUploadFilesize);
-$tmpl->assign('uploadMaxHumanFilesize', OCP\Util::humanFileSize($maxUploadFilesize));
-$tmpl->assign('allowZipDownload', intval(OCP\Config::getSystemValue('allowZipDownload', true)));
-$tmpl->assign('usedSpacePercent', (int)$storageInfo['relative']);
-$tmpl->printPage();
+	OCP\Util::addscript('files', 'fileactions');
+	OCP\Util::addscript('files', 'files');
+	OCP\Util::addscript('files', 'keyboardshortcuts');
+	$tmpl = new OCP\Template('files', 'index', 'user');
+	$tmpl->assign('fileList', $list->fetchPage(), false);
+	$tmpl->assign('breadcrumb', $breadcrumbNav->fetchPage(), false);
+	$tmpl->assign('dir', \OC\Files\Filesystem::normalizePath($dir));
+	$tmpl->assign('isCreatable', \OC\Files\Filesystem::isCreatable($dir . '/'));
+	$tmpl->assign('permissions', $permissions);
+	$tmpl->assign('files', $files);
+	$tmpl->assign('uploadMaxFilesize', $maxUploadFilesize);
+	$tmpl->assign('uploadMaxHumanFilesize', OCP\Util::humanFileSize($maxUploadFilesize));
+	$tmpl->assign('allowZipDownload', intval(OCP\Config::getSystemValue('allowZipDownload', true)));
+	$tmpl->assign('usedSpacePercent', (int)$storageInfo['relative']);
+	$tmpl->printPage();
+}
diff --git a/apps/files/js/files.js b/apps/files/js/files.js
index 13367b33628..8e0399b0e0c 100644
--- a/apps/files/js/files.js
+++ b/apps/files/js/files.js
@@ -670,12 +670,8 @@ $(document).ready(function() {
 		});
 	});
 
-	//check if we need to scan the filesystem
-	$.get(OC.filePath('files','ajax','scan.php'),{checkonly:'true'}, function(response) {
-		if(response.data.done){
-			scanFiles();
-		}
-	}, "json");
+	//do a background scan if needed
+	scanFiles();
 
 	var lastWidth = 0;
 	var breadcrumbs = [];
@@ -774,27 +770,23 @@ $(document).ready(function() {
 	}
 });
 
-function scanFiles(force,dir){
+function scanFiles(force, dir){
 	if(!dir){
-		dir='';
+		dir = '';
 	}
-	force=!!force; //cast to bool
-	scanFiles.scanning=true;
-	$('#scanning-message').show();
-	$('#fileList').remove();
-	var scannerEventSource=new OC.EventSource(OC.filePath('files','ajax','scan.php'),{force:force,dir:dir});
-	scanFiles.cancel=scannerEventSource.close.bind(scannerEventSource);
-	scannerEventSource.listen('scanning',function(data){
-		$('#scan-count').text(t('files', '{count} files scanned', {count: data.count}));
-		$('#scan-current').text(data.file+'/');
+	force = !!force; //cast to bool
+	scanFiles.scanning = true;
+	var scannerEventSource = new OC.EventSource(OC.filePath('files','ajax','scan.php'),{force:force,dir:dir});
+	scanFiles.cancel = scannerEventSource.close.bind(scannerEventSource);
+	scannerEventSource.listen('count',function(count){
+		console.log(count + 'files scanned')
+	});
+	scannerEventSource.listen('folder',function(path){
+		console.log('now scanning ' + path)
 	});
-	scannerEventSource.listen('success',function(success){
+	scannerEventSource.listen('done',function(count){
 		scanFiles.scanning=false;
-		if(success){
-			window.location.reload();
-		}else{
-			alert(t('files', 'error while scanning'));
-		}
+		console.log('done after ' + count + 'files');
 	});
 }
 scanFiles.scanning=false;
diff --git a/apps/files/js/upgrade.js b/apps/files/js/upgrade.js
new file mode 100644
index 00000000000..02d57fc9e6c
--- /dev/null
+++ b/apps/files/js/upgrade.js
@@ -0,0 +1,17 @@
+$(document).ready(function () {
+	var eventSource, total, bar = $('#progressbar');
+	console.log('start');
+	bar.progressbar({value: 0});
+	eventSource = new OC.EventSource(OC.filePath('files', 'ajax', 'upgrade.php'));
+	eventSource.listen('total', function (count) {
+		total = count;
+		console.log(count + ' files needed to be migrated');
+	});
+	eventSource.listen('count', function (count) {
+		bar.progressbar({value: (count / total) * 100});
+		console.log(count);
+	});
+	eventSource.listen('done', function () {
+		document.location.reload();
+	});
+});
diff --git a/apps/files/settings.php b/apps/files/settings.php
index ea730a5a727..8687f013137 100644
--- a/apps/files/settings.php
+++ b/apps/files/settings.php
@@ -32,7 +32,7 @@ OCP\Util::addscript( "files", "files" );
 $dir = isset( $_GET['dir'] ) ? $_GET['dir'] : '';
 
 $files = array();
-foreach( OC_Files::getdirectorycontent( $dir ) as $i ) {
+foreach( \OC\Files\Filesystem::getDirectoryContent( $dir ) as $i ) {
 	$i["date"] = date( $CONFIG_DATEFORMAT, $i["mtime"] );
 	$files[] = $i;
 }
diff --git a/apps/files/templates/part.list.php b/apps/files/templates/part.list.php
index f3f06d61d66..5c39dda85ff 100644
--- a/apps/files/templates/part.list.php
+++ b/apps/files/templates/part.list.php
@@ -13,7 +13,7 @@
 	$name = str_replace('%2F', '/', $name);
 	$directory = str_replace('+', '%20', urlencode($file['directory']));
 	$directory = str_replace('%2F', '/', $directory); ?>
-	<tr data-id="<?php echo $file['id']; ?>"
+	<tr data-id="<?php echo $file['fileid']; ?>"
 		data-file="<?php echo $name;?>"
 		data-type="<?php echo ($file['type'] == 'dir')?'dir':'file'?>"
 		data-mime="<?php echo $file['mimetype']?>"
@@ -28,7 +28,7 @@
 			>
 		<?php if(!isset($_['readonly']) || !$_['readonly']): ?><input type="checkbox" /><?php endif; ?>
 		<?php if($file['type'] == 'dir'): ?>
-			<a class="name" href="<?php $_['baseURL'].$directory.'/'.$name; ?>)" title="">
+			<a class="name" href="<?php echo $_['baseURL'].$directory.'/'.$name; ?>)" title="">
 		<?php else: ?>
 			<a class="name" href="<?php echo $_['downloadURL'].$directory.'/'.$name; ?>" title="">
 		<?php endif; ?>
@@ -61,4 +61,4 @@
 			</span>
 		</td>
 	</tr>
-<?php endforeach;
\ No newline at end of file
+<?php endforeach;
diff --git a/apps/files/templates/upgrade.php b/apps/files/templates/upgrade.php
new file mode 100644
index 00000000000..de6cc713028
--- /dev/null
+++ b/apps/files/templates/upgrade.php
@@ -0,0 +1,4 @@
+<div id="upgrade">
+	<?php echo $l->t('Upgrading filesystem cache...');?>
+	<div id="progressbar" />
+</div>
diff --git a/apps/files_external/ajax/addRootCertificate.php b/apps/files_external/ajax/addRootCertificate.php
index be60b415e1b..2f67e801b2c 100644
--- a/apps/files_external/ajax/addRootCertificate.php
+++ b/apps/files_external/ajax/addRootCertificate.php
@@ -12,8 +12,10 @@ $data = fread($fh, filesize($_FILES['rootcert_import']['tmp_name']));
 fclose($fh);
 $filename = $_FILES['rootcert_import']['name'];
 
-$view = new \OC_FilesystemView('/'.\OCP\User::getUser().'/files_external/uploads');
-if ( ! $view->file_exists('')) $view->mkdir('');
+$view = new \OC\Files\View('/'.\OCP\User::getUser().'/files_external/uploads');
+if (!$view->file_exists('')){
+	$view->mkdir('');
+}
 
 $isValid = openssl_pkey_get_public($data);
 
diff --git a/apps/files_external/appinfo/app.php b/apps/files_external/appinfo/app.php
index 837d35c9c63..c58cfcd0f5e 100644
--- a/apps/files_external/appinfo/app.php
+++ b/apps/files_external/appinfo/app.php
@@ -6,14 +6,14 @@
  * See the COPYING-README file.
  */
 
-OC::$CLASSPATH['OC_FileStorage_StreamWrapper']='apps/files_external/lib/streamwrapper.php';
-OC::$CLASSPATH['OC_Filestorage_FTP']='apps/files_external/lib/ftp.php';
-OC::$CLASSPATH['OC_Filestorage_DAV']='apps/files_external/lib/webdav.php';
-OC::$CLASSPATH['OC_Filestorage_Google']='apps/files_external/lib/google.php';
-OC::$CLASSPATH['OC_Filestorage_SWIFT']='apps/files_external/lib/swift.php';
-OC::$CLASSPATH['OC_Filestorage_SMB']='apps/files_external/lib/smb.php';
-OC::$CLASSPATH['OC_Filestorage_AmazonS3']='apps/files_external/lib/amazons3.php';
-OC::$CLASSPATH['OC_Filestorage_Dropbox']='apps/files_external/lib/dropbox.php';
+OC::$CLASSPATH['OC\Files\Storage\StreamWrapper']='apps/files_external/lib/streamwrapper.php';
+OC::$CLASSPATH['OC\Files\Storage\FTP']='apps/files_external/lib/ftp.php';
+OC::$CLASSPATH['OC\Files\Storage\DAV']='apps/files_external/lib/webdav.php';
+OC::$CLASSPATH['OC\Files\Storage\Google']='apps/files_external/lib/google.php';
+OC::$CLASSPATH['OC\Files\Storage\SWIFT']='apps/files_external/lib/swift.php';
+OC::$CLASSPATH['OC\Files\Storage\SMB']='apps/files_external/lib/smb.php';
+OC::$CLASSPATH['OC\Files\Storage\AmazonS3']='apps/files_external/lib/amazons3.php';
+OC::$CLASSPATH['OC\Files\Storage\Dropbox']='apps/files_external/lib/dropbox.php';
 OC::$CLASSPATH['OC_Mount_Config']='apps/files_external/lib/config.php';
 
 OCP\App::registerAdmin('files_external', 'settings');
diff --git a/apps/files_external/appinfo/info.xml b/apps/files_external/appinfo/info.xml
index 3da1913c5fc..2c04216a9fb 100644
--- a/apps/files_external/appinfo/info.xml
+++ b/apps/files_external/appinfo/info.xml
@@ -5,7 +5,7 @@
 	<description>Mount external storage sources</description>
 	<licence>AGPL</licence>
 	<author>Robin Appelman, Michael Gapczynski</author>
-	<require>4.9</require>
+	<require>4.91</require>
 	<shipped>true</shipped>
 	<types>
 		<filesystem/>
diff --git a/apps/files_external/js/dropbox.js b/apps/files_external/js/dropbox.js
index c1e38640708..a9a3155e677 100644
--- a/apps/files_external/js/dropbox.js
+++ b/apps/files_external/js/dropbox.js
@@ -1,6 +1,6 @@
 $(document).ready(function() {
 
-	$('#externalStorage tbody tr.OC_Filestorage_Dropbox').each(function() {
+	$('#externalStorage tbody tr.\\\\OC\\\\Files\\\\Storage\\\\Dropbox').each(function() {
 		var configured = $(this).find('[data-parameter="configured"]');
 		if ($(configured).val() == 'true') {
 			$(this).find('.configuration input').attr('disabled', 'disabled');
@@ -38,7 +38,7 @@ $(document).ready(function() {
 
 	$('#externalStorage tbody tr input').live('keyup', function() {
 		var tr = $(this).parent().parent();
-		if ($(tr).hasClass('OC_Filestorage_Dropbox') && $(tr).find('[data-parameter="configured"]').val() != 'true') {
+		if ($(tr).hasClass('\\\\OC\\\\Files\\\\Storage\\\\Dropbox') && $(tr).find('[data-parameter="configured"]').val() != 'true') {
 			var config = $(tr).find('.configuration');
 			if ($(tr).find('.mountPoint input').val() != '' && $(config).find('[data-parameter="app_key"]').val() != '' && $(config).find('[data-parameter="app_secret"]').val() != '') {
 				if ($(tr).find('.dropbox').length == 0) {
diff --git a/apps/files_external/js/google.js b/apps/files_external/js/google.js
index 0b3c314eb5d..7d759d13da4 100644
--- a/apps/files_external/js/google.js
+++ b/apps/files_external/js/google.js
@@ -1,6 +1,6 @@
 $(document).ready(function() {
 
-	$('#externalStorage tbody tr.OC_Filestorage_Google').each(function() {
+	$('#externalStorage tbody tr.\\\\OC\\\\Files\\\\Storage\\\\Google').each(function() {
 		var configured = $(this).find('[data-parameter="configured"]');
 		if ($(configured).val() == 'true') {
 			$(this).find('.configuration')
@@ -34,7 +34,8 @@ $(document).ready(function() {
 	});
 
 	$('#externalStorage tbody tr').live('change', function() {
-		if ($(this).hasClass('OC_Filestorage_Google') && $(this).find('[data-parameter="configured"]').val() != 'true') {
+		console.log('hello');
+		if ($(this).hasClass('\\\\OC\\\\Files\\\\Storage\\\\Google') && $(this).find('[data-parameter="configured"]').val() != 'true') {
 			if ($(this).find('.mountPoint input').val() != '') {
 				if ($(this).find('.google').length == 0) {
 					$(this).find('.configuration').append('<a class="button google">'+t('files_external', 'Grant access')+'</a>');
@@ -45,7 +46,7 @@ $(document).ready(function() {
 
 	$('#externalStorage tbody tr .mountPoint input').live('keyup', function() {
 		var tr = $(this).parent().parent();
-		if ($(tr).hasClass('OC_Filestorage_Google') && $(tr).find('[data-parameter="configured"]').val() != 'true' && $(tr).find('.google').length > 0) {
+		if ($(tr).hasClass('\\\\OC\\\\Files\\\\Storage\\\\Google') && $(tr).find('[data-parameter="configured"]').val() != 'true' && $(tr).find('.google').length > 0) {
 			if ($(this).val() != '') {
 				$(tr).find('.google').show();
 			} else {
diff --git a/apps/files_external/js/settings.js b/apps/files_external/js/settings.js
index 0dc983ca8ad..6cbc2180084 100644
--- a/apps/files_external/js/settings.js
+++ b/apps/files_external/js/settings.js
@@ -100,7 +100,7 @@ $(document).ready(function() {
 						td.append('<input type="text" data-parameter="'+parameter+'" placeholder="'+placeholder+'" />');
 					}
 				});
-				if (parameters['custom'] && $('#externalStorage tbody tr.'+backendClass).length == 1) {
+				if (parameters['custom'] && $('#externalStorage tbody tr.'+backendClass.replace(/\\/g, '\\\\')).length == 1) {
 					OC.addScript('files_external', parameters['custom']);
 				}
 				return false;
diff --git a/apps/files_external/lib/amazons3.php b/apps/files_external/lib/amazons3.php
index e5ef4eb097c..494885a1dd3 100644
--- a/apps/files_external/lib/amazons3.php
+++ b/apps/files_external/lib/amazons3.php
@@ -1,39 +1,43 @@
 <?php
 
 /**
-* ownCloud
-*
-* @author Michael Gapczynski
-* @copyright 2012 Michael Gapczynski mtgap@owncloud.com
-*
-* This library is free software; you can redistribute it and/or
-* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
-* License as published by the Free Software Foundation; either
-* version 3 of the License, or any later version.
-*
-* This library is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
-*
-* You should have received a copy of the GNU Affero General Public
-* License along with this library.  If not, see <http://www.gnu.org/licenses/>.
-*/
+ * ownCloud
+ *
+ * @author Michael Gapczynski
+ * @copyright 2012 Michael Gapczynski mtgap@owncloud.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace OC\Files\Storage;
 
 require_once 'aws-sdk/sdk.class.php';
 
-class OC_Filestorage_AmazonS3 extends OC_Filestorage_Common {
+class AmazonS3 extends \OC\Files\Storage\Common {
 
 	private $s3;
 	private $bucket;
 	private $objects = array();
+	private $id;
 
 	private static $tempFiles = array();
 
 	// TODO options: storage class, encryption server side, encrypt before upload?
 
 	public function __construct($params) {
-		$this->s3 = new AmazonS3(array('key' => $params['key'], 'secret' => $params['secret']));
+		$this->id = 'amazon::' . $params['key'] . md5($params['secret']);
+		$this->s3 = new \AmazonS3(array('key' => $params['key'], 'secret' => $params['secret']));
 		$this->bucket = $params['bucket'];
 	}
 
@@ -47,7 +51,7 @@ class OC_Filestorage_AmazonS3 extends OC_Filestorage_Common {
 				return $response;
 				// This object could be a folder, a '/' must be at the end of the path
 			} else if (substr($path, -1) != '/') {
-				$response = $this->s3->get_object_metadata($this->bucket, $path.'/');
+				$response = $this->s3->get_object_metadata($this->bucket, $path . '/');
 				if ($response) {
 					$this->objects[$path] = $response;
 					return $response;
@@ -57,6 +61,10 @@ class OC_Filestorage_AmazonS3 extends OC_Filestorage_Common {
 		return false;
 	}
 
+	public function getId() {
+		return $this->id;
+	}
+
 	public function mkdir($path) {
 		// Folders in Amazon S3 are 0 byte objects with a '/' at the end of the name
 		if (substr($path, -1) != '/') {
@@ -96,8 +104,8 @@ class OC_Filestorage_AmazonS3 extends OC_Filestorage_Common {
 			foreach ($response->body->CommonPrefixes as $object) {
 				$files[] = basename($object->Prefix);
 			}
-			OC_FakeDirStream::$dirs['amazons3'.$path] = $files;
-			return opendir('fakedir://amazons3'.$path);
+			\OC\Files\Stream\Dir::register('amazons3' . $path, $files);
+			return opendir('fakedir://amazons3' . $path);
 		}
 		return false;
 	}
@@ -107,15 +115,10 @@ class OC_Filestorage_AmazonS3 extends OC_Filestorage_Common {
 			$stat['size'] = $this->s3->get_bucket_filesize($this->bucket);
 			$stat['atime'] = time();
 			$stat['mtime'] = $stat['atime'];
-			$stat['ctime'] = $stat['atime'];
-		} else {
-			$object = $this->getObject($path);
-			if ($object) {
-				$stat['size'] = $object['Size'];
-				$stat['atime'] = time();
-				$stat['mtime'] = strtotime($object['LastModified']);
-				$stat['ctime'] = $stat['mtime'];
-			}
+		} else if ($object = $this->getObject($path)) {
+			$stat['size'] = $object['Size'];
+			$stat['atime'] = time();
+			$stat['mtime'] = strtotime($object['LastModified']);
 		}
 		if (isset($stat)) {
 			return $stat;
@@ -166,7 +169,7 @@ class OC_Filestorage_AmazonS3 extends OC_Filestorage_Common {
 		switch ($mode) {
 			case 'r':
 			case 'rb':
-				$tmpFile = OC_Helper::tmpFile();
+				$tmpFile = \OC_Helper::tmpFile();
 				$handle = fopen($tmpFile, 'w');
 				$response = $this->s3->get_object($this->bucket, $path, array('fileDownload' => $handle));
 				if ($response->isOK()) {
@@ -190,14 +193,14 @@ class OC_Filestorage_AmazonS3 extends OC_Filestorage_Common {
 				} else {
 					$ext = '';
 				}
-				$tmpFile = OC_Helper::tmpFile($ext);
-				OC_CloseStreamWrapper::$callBacks[$tmpFile] = array($this, 'writeBack');
+				$tmpFile = \OC_Helper::tmpFile($ext);
+				\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
 				if ($this->file_exists($path)) {
 					$source = $this->fopen($path, 'r');
 					file_put_contents($tmpFile, $source);
 				}
 				self::$tempFiles[$tmpFile] = $path;
-				return fopen('close://'.$tmpFile, $mode);
+				return fopen('close://' . $tmpFile, $mode);
 		}
 		return false;
 	}
@@ -206,8 +209,8 @@ class OC_Filestorage_AmazonS3 extends OC_Filestorage_Common {
 		if (isset(self::$tempFiles[$tmpFile])) {
 			$handle = fopen($tmpFile, 'r');
 			$response = $this->s3->create_object($this->bucket,
-												 self::$tempFiles[$tmpFile],
-												 array('fileUpload' => $handle));
+				self::$tempFiles[$tmpFile],
+				array('fileUpload' => $handle));
 			if ($response->isOK()) {
 				unlink($tmpFile);
 			}
diff --git a/apps/files_external/lib/config.php b/apps/files_external/lib/config.php
index fd3dc2ca0d0..6b0df21461b 100755
--- a/apps/files_external/lib/config.php
+++ b/apps/files_external/lib/config.php
@@ -38,20 +38,20 @@ class OC_Mount_Config {
 	* @return array
 	*/
 	public static function getBackends() {
-
-		$backends['OC_Filestorage_Local']=array(
+		
+		$backends['\OC\Files\Storage\Local']=array(
 				'backend' => 'Local',
 				'configuration' => array(
 					'datadir' => 'Location'));
 
-		$backends['OC_Filestorage_AmazonS3']=array(
+		$backends['\OC\Files\Storage\AmazonS3']=array(
 			'backend' => 'Amazon S3',
 			'configuration' => array(
 				'key' => 'Key',
 				'secret' => '*Secret',
 				'bucket' => 'Bucket'));
 
-		$backends['OC_Filestorage_Dropbox']=array(
+		$backends['\OC\Files\Storage\Dropbox']=array(
 			'backend' => 'Dropbox',
 			'configuration' => array(
 				'configured' => '#configured',
@@ -61,7 +61,7 @@ class OC_Mount_Config {
 				'token_secret' => '#token_secret'),
 				'custom' => 'dropbox');
 
-		if(OC_Mount_Config::checkphpftp()) $backends['OC_Filestorage_FTP']=array(
+		if(OC_Mount_Config::checkphpftp()) $backends['\OC\Files\Storage\FTP']=array(
 			'backend' => 'FTP',
 			'configuration' => array(
 				'host' => 'URL',
@@ -70,15 +70,15 @@ class OC_Mount_Config {
 				'root' => '&Root',
 				'secure' => '!Secure ftps://'));
 
-		$backends['OC_Filestorage_Google']=array(
+		$backends['\OC\Files\Storage\Google']=array(
 			'backend' => 'Google Drive',
 			'configuration' => array(
 				'configured' => '#configured',
 				'token' => '#token',
 				'token_secret' => '#token secret'),
 				'custom' => 'google');
-
-		$backends['OC_Filestorage_SWIFT']=array(
+		
+		$backends['\OC\Files\Storage\SWIFT']=array(
 			'backend' => 'OpenStack Swift',
 			'configuration' => array(
 				'host' => 'URL',
@@ -86,8 +86,8 @@ class OC_Mount_Config {
 				'token' => '*Token',
 				'root' => '&Root',
 				'secure' => '!Secure ftps://'));
-
-		if(OC_Mount_Config::checksmbclient()) $backends['OC_Filestorage_SMB']=array(
+							
+		if(OC_Mount_Config::checksmbclient()) $backends['\OC\Files\Storage\SMB']=array(
 			'backend' => 'SMB / CIFS',
 			'configuration' => array(
 				'host' => 'URL',
@@ -95,8 +95,8 @@ class OC_Mount_Config {
 				'password' => '*Password',
 				'share' => 'Share',
 				'root' => '&Root'));
-
-		$backends['OC_Filestorage_DAV']=array(
+				
+		$backends['\OC\Files\Storage\DAV']=array(
 			'backend' => 'ownCloud / WebDAV',
 			'configuration' => array(
 				'host' => 'URL',
@@ -120,6 +120,10 @@ class OC_Mount_Config {
 		if (isset($mountPoints[self::MOUNT_TYPE_GROUP])) {
 			foreach ($mountPoints[self::MOUNT_TYPE_GROUP] as $group => $mounts) {
 				foreach ($mounts as $mountPoint => $mount) {
+					// Update old classes to new namespace
+					if (strpos($mount['class'], 'OC_Filestorage_') !== false) {
+						$mount['class'] = '\OC\Files\Storage\\'.substr($mount['class'], 15);
+					}
 					// Remove '/$user/files/' from mount point
 					$mountPoint = substr($mountPoint, 13);
 					// Merge the mount point into the current mount points
@@ -139,6 +143,10 @@ class OC_Mount_Config {
 		if (isset($mountPoints[self::MOUNT_TYPE_USER])) {
 			foreach ($mountPoints[self::MOUNT_TYPE_USER] as $user => $mounts) {
 				foreach ($mounts as $mountPoint => $mount) {
+					// Update old classes to new namespace
+					if (strpos($mount['class'], 'OC_Filestorage_') !== false) {
+						$mount['class'] = '\OC\Files\Storage\\'.substr($mount['class'], 15);
+					}
 					// Remove '/$user/files/' from mount point
 					$mountPoint = substr($mountPoint, 13);
 					// Merge the mount point into the current mount points
@@ -169,6 +177,10 @@ class OC_Mount_Config {
 		$personal = array();
 		if (isset($mountPoints[self::MOUNT_TYPE_USER][$uid])) {
 			foreach ($mountPoints[self::MOUNT_TYPE_USER][$uid] as $mountPoint => $mount) {
+				// Update old classes to new namespace
+				if (strpos($mount['class'], 'OC_Filestorage_') !== false) {
+					$mount['class'] = '\OC\Files\Storage\\'.substr($mount['class'], 15);
+				}
 				// Remove '/uid/files/' from mount point
 				$personal[substr($mountPoint, strlen($uid) + 8)] = array('class' => $mount['class'],
 																'backend' => $backends[$mount['class']]['backend'],
@@ -179,22 +191,6 @@ class OC_Mount_Config {
 	}
 
 	/**
-	 * Add directory for mount point to the filesystem
-	 * @param OC_Fileview instance $view
-	 * @param string path to mount point
-	 */
-	private static function addMountPointDirectory($view, $path) {
-		$dir = '';
-		foreach ( explode('/', $path) as $pathPart) {
-			$dir = $dir.'/'.$pathPart;
-			if ( !$view->file_exists($dir)) {
-				$view->mkdir($dir);
-			}
-		}
-	}
-
-
-	/**
 	* Add a mount point to the filesystem
 	* @param string Mount point
 	* @param string Backend class
@@ -213,36 +209,11 @@ class OC_Mount_Config {
 		if ($isPersonal) {
 			// Verify that the mount point applies for the current user
 			// Prevent non-admin users from mounting local storage
-			if ($applicable != OCP\User::getUser() || $class == 'OC_Filestorage_Local') {
+			if ($applicable != OCP\User::getUser() || $class == '\OC\Files\Storage\Local') {
 				return false;
 			}
-			$view = new OC_FilesystemView('/'.OCP\User::getUser().'/files');
-			self::addMountPointDirectory($view, ltrim($mountPoint, '/'));
 			$mountPoint = '/'.$applicable.'/files/'.ltrim($mountPoint, '/');
 		} else {
-			$view = new OC_FilesystemView('/');
-			switch ($mountType) {
-				case 'user':
-					if ($applicable == "all") {
-						$users = OCP\User::getUsers();
-						foreach ( $users as $user ) {
-							$path = $user.'/files/'.ltrim($mountPoint, '/');
-							self::addMountPointDirectory($view, $path);
-						}
-					} else {
-						$path = $applicable.'/files/'.ltrim($mountPoint, '/');
-						self::addMountPointDirectory($view, $path);
-					}
-					break;
-				case 'group' :
-					$groupMembers = OC_Group::usersInGroups(array($applicable));
-					foreach ( $groupMembers as $user ) {
-						$path =  $user.'/files/'.ltrim($mountPoint, '/');
-						self::addMountPointDirectory($view, $path);
-					}
-					break;
-			}
-
 			$mountPoint = '/$user/files/'.ltrim($mountPoint, '/');
 		}
 		$mount = array($applicable => array($mountPoint => array('class' => $class, 'options' => $classOptions)));
diff --git a/apps/files_external/lib/dropbox.php b/apps/files_external/lib/dropbox.php
index 33ca14cab15..11644e4a2c8 100755
--- a/apps/files_external/lib/dropbox.php
+++ b/apps/files_external/lib/dropbox.php
@@ -20,12 +20,15 @@
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+namespace OC\Files\Storage;
+
 require_once 'Dropbox/autoload.php';
 
-class OC_Filestorage_Dropbox extends OC_Filestorage_Common {
+class Dropbox extends \OC\Files\Storage\Common {
 
 	private $dropbox;
 	private $root;
+	private $id;
 	private $metaData = array();
 
 	private static $tempFiles = array();
@@ -37,13 +40,14 @@ class OC_Filestorage_Dropbox extends OC_Filestorage_Common {
 			&& isset($params['token'])
 			&& isset($params['token_secret'])
 		) {
+			$this->id = 'dropbox::'.$params['app_key'] . $params['token']. '/' . $params['root'];
 			$this->root=isset($params['root'])?$params['root']:'';
-			$oauth = new Dropbox_OAuth_Curl($params['app_key'], $params['app_secret']);
+			$oauth = new \Dropbox_OAuth_Curl($params['app_key'], $params['app_secret']);
 			$oauth->setToken($params['token'], $params['token_secret']);
-			$this->dropbox = new Dropbox_API($oauth, 'dropbox');
+			$this->dropbox = new \Dropbox_API($oauth, 'dropbox');
 			$this->mkdir('');
 		} else {
-			throw new Exception('Creating OC_Filestorage_Dropbox storage failed');
+			throw new \Exception('Creating \OC\Files\Storage\Dropbox storage failed');
 		}
 	}
 
@@ -55,8 +59,8 @@ class OC_Filestorage_Dropbox extends OC_Filestorage_Common {
 			if ($list) {
 				try {
 					$response = $this->dropbox->getMetaData($path);
-				} catch (Exception $exception) {
-					OCP\Util::writeLog('files_external', $exception->getMessage(), OCP\Util::ERROR);
+				} catch (\Exception $exception) {
+					\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
 					return false;
 				}
 				if ($response && isset($response['contents'])) {
@@ -76,21 +80,25 @@ class OC_Filestorage_Dropbox extends OC_Filestorage_Common {
 					$response = $this->dropbox->getMetaData($path, 'false');
 					$this->metaData[$path] = $response;
 					return $response;
-				} catch (Exception $exception) {
-					OCP\Util::writeLog('files_external', $exception->getMessage(), OCP\Util::ERROR);
+				} catch (\Exception $exception) {
+					\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
 					return false;
 				}
 			}
 		}
 	}
 
+	public function getId(){
+		return $this->id;
+	}
+
 	public function mkdir($path) {
 		$path = $this->root.$path;
 		try {
 			$this->dropbox->createFolder($path);
 			return true;
-		} catch (Exception $exception) {
-			OCP\Util::writeLog('files_external', $exception->getMessage(), OCP\Util::ERROR);
+		} catch (\Exception $exception) {
+			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
 			return false;
 		}
 	}
@@ -106,7 +114,7 @@ class OC_Filestorage_Dropbox extends OC_Filestorage_Common {
 			foreach ($contents as $file) {
 				$files[] = basename($file['path']);
 			}
-			OC_FakeDirStream::$dirs['dropbox'.$path] = $files;
+			\OC\Files\Stream\Dir::register('dropbox'.$path, $files);
 			return opendir('fakedir://dropbox'.$path);
 		}
 		return false;
@@ -118,7 +126,6 @@ class OC_Filestorage_Dropbox extends OC_Filestorage_Common {
 			$stat['size'] = $metaData['bytes'];
 			$stat['atime'] = time();
 			$stat['mtime'] = (isset($metaData['modified'])) ? strtotime($metaData['modified']) : time();
-			$stat['ctime'] = $stat['mtime'];
 			return $stat;
 		}
 		return false;
@@ -163,8 +170,8 @@ class OC_Filestorage_Dropbox extends OC_Filestorage_Common {
 		try {
 			$this->dropbox->delete($path);
 			return true;
-		} catch (Exception $exception) {
-			OCP\Util::writeLog('files_external', $exception->getMessage(), OCP\Util::ERROR);
+		} catch (\Exception $exception) {
+			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
 			return false;
 		}
 	}
@@ -175,8 +182,8 @@ class OC_Filestorage_Dropbox extends OC_Filestorage_Common {
 		try {
 			$this->dropbox->move($path1, $path2);
 			return true;
-		} catch (Exception $exception) {
-			OCP\Util::writeLog('files_external', $exception->getMessage(), OCP\Util::ERROR);
+		} catch (\Exception $exception) {
+			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
 			return false;
 		}
 	}
@@ -187,8 +194,8 @@ class OC_Filestorage_Dropbox extends OC_Filestorage_Common {
 		try {
 			$this->dropbox->copy($path1, $path2);
 			return true;
-		} catch (Exception $exception) {
-			OCP\Util::writeLog('files_external', $exception->getMessage(), OCP\Util::ERROR);
+		} catch (\Exception $exception) {
+			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
 			return false;
 		}
 	}
@@ -198,13 +205,13 @@ class OC_Filestorage_Dropbox extends OC_Filestorage_Common {
 		switch ($mode) {
 			case 'r':
 			case 'rb':
-				$tmpFile = OC_Helper::tmpFile();
+				$tmpFile = \OC_Helper::tmpFile();
 				try {
 					$data = $this->dropbox->getFile($path);
 					file_put_contents($tmpFile, $data);
 					return fopen($tmpFile, 'r');
-				} catch (Exception $exception) {
-					OCP\Util::writeLog('files_external', $exception->getMessage(), OCP\Util::ERROR);
+				} catch (\Exception $exception) {
+					\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
 					return false;
 				}
 			case 'w':
@@ -224,8 +231,8 @@ class OC_Filestorage_Dropbox extends OC_Filestorage_Common {
 				} else {
 					$ext = '';
 				}
-				$tmpFile = OC_Helper::tmpFile($ext);
-				OC_CloseStreamWrapper::$callBacks[$tmpFile] = array($this, 'writeBack');
+				$tmpFile = \OC_Helper::tmpFile($ext);
+				\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
 				if ($this->file_exists($path)) {
 					$source = $this->fopen($path, 'r');
 					file_put_contents($tmpFile, $source);
@@ -242,8 +249,8 @@ class OC_Filestorage_Dropbox extends OC_Filestorage_Common {
 			try {
 				$this->dropbox->putFile(self::$tempFiles[$tmpFile], $handle);
 				unlink($tmpFile);
-			} catch (Exception $exception) {
-				OCP\Util::writeLog('files_external', $exception->getMessage(), OCP\Util::ERROR);
+			} catch (\Exception $exception) {
+				\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
 			}
 		}
 	}
@@ -264,8 +271,8 @@ class OC_Filestorage_Dropbox extends OC_Filestorage_Common {
 		try {
 			$info = $this->dropbox->getAccountInfo();
 			return $info['quota_info']['quota'] - $info['quota_info']['normal'];
-		} catch (Exception $exception) {
-			OCP\Util::writeLog('files_external', $exception->getMessage(), OCP\Util::ERROR);
+		} catch (\Exception $exception) {
+			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
 			return false;
 		}
 	}
diff --git a/apps/files_external/lib/ftp.php b/apps/files_external/lib/ftp.php
index e796ae446bf..9a27b63323a 100644
--- a/apps/files_external/lib/ftp.php
+++ b/apps/files_external/lib/ftp.php
@@ -6,7 +6,9 @@
  * See the COPYING-README file.
  */
 
-class OC_FileStorage_FTP extends OC_FileStorage_StreamWrapper{
+namespace OC\Files\Storage;
+
+class FTP extends \OC\Files\Storage\StreamWrapper{
 	private $password;
 	private $user;
 	private $host;
@@ -38,9 +40,13 @@ class OC_FileStorage_FTP extends OC_FileStorage_StreamWrapper{
 		}
 	}
 
+	public function getId(){
+		return 'ftp::' . $this->user . '@' . $this->host . '/' . $this->root;
+	}
+
 	/**
 	 * construct the ftp url
-	 * @param string path
+	 * @param string $path
 	 * @return string
 	 */
 	public function constructUrl($path) {
@@ -51,7 +57,8 @@ class OC_FileStorage_FTP extends OC_FileStorage_StreamWrapper{
 		$url.='://'.$this->user.':'.$this->password.'@'.$this->host.$this->root.$path;
 		return $url;
 	}
-	public function fopen($path, $mode) {
+	public function fopen($path,$mode) {
+		$this->init();
 		switch($mode) {
 			case 'r':
 			case 'rb':
@@ -61,7 +68,7 @@ class OC_FileStorage_FTP extends OC_FileStorage_StreamWrapper{
 			case 'ab':
 				//these are supported by the wrapper
 				$context = stream_context_create(array('ftp' => array('overwrite' => true)));
-				return fopen($this->constructUrl($path), $mode, false, $context);
+				return fopen($this->constructUrl($path),$mode, false,$context);
 			case 'r+':
 			case 'w+':
 			case 'wb+':
@@ -77,16 +84,18 @@ class OC_FileStorage_FTP extends OC_FileStorage_StreamWrapper{
 					$ext='';
 				}
 				$tmpFile=OCP\Files::tmpFile($ext);
-				OC_CloseStreamWrapper::$callBacks[$tmpFile]=array($this, 'writeBack');
+				\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
 				if ($this->file_exists($path)) {
 					$this->getFile($path, $tmpFile);
 				}
 				self::$tempFiles[$tmpFile]=$path;
-				return fopen('close://'.$tmpFile, $mode);
+				return fopen('close://'.$tmpFile,$mode);
 		}
+		return false;
 	}
 
 	public function writeBack($tmpFile) {
+		$this->init();
 		if (isset(self::$tempFiles[$tmpFile])) {
 			$this->uploadFile($tmpFile, self::$tempFiles[$tmpFile]);
 			unlink($tmpFile);
diff --git a/apps/files_external/lib/google.php b/apps/files_external/lib/google.php
index c836a5a07c0..7396c7e3f27 100644
--- a/apps/files_external/lib/google.php
+++ b/apps/files_external/lib/google.php
@@ -20,14 +20,17 @@
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+namespace OC\Files\Storage;
+
 require_once 'Google/common.inc.php';
 
-class OC_Filestorage_Google extends OC_Filestorage_Common {
+class Google extends \OC\Files\Storage\Common {
 
 	private $consumer;
 	private $oauth_token;
 	private $sig_method;
 	private $entries;
+	private $id;
 
 	private static $tempFiles = array();
 
@@ -38,12 +41,13 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
 		) {
 			$consumer_key = isset($params['consumer_key']) ? $params['consumer_key'] : 'anonymous';
 			$consumer_secret = isset($params['consumer_secret']) ? $params['consumer_secret'] : 'anonymous';
-			$this->consumer = new OAuthConsumer($consumer_key, $consumer_secret);
-			$this->oauth_token = new OAuthToken($params['token'], $params['token_secret']);
-			$this->sig_method = new OAuthSignatureMethod_HMAC_SHA1();
+			$this->id = 'google::' . $params['token'];
+			$this->consumer = new \OAuthConsumer($consumer_key, $consumer_secret);
+			$this->oauth_token = new \OAuthToken($params['token'], $params['token_secret']);
+			$this->sig_method = new \OAuthSignatureMethod_HMAC_SHA1();
 			$this->entries = array();
 		} else {
-			throw new Exception('Creating OC_Filestorage_Google storage failed');
+			throw new \Exception('Creating \OC\Files\Storage\Google storage failed');
 		}
 	}
 
@@ -68,7 +72,7 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
 			$tempStr .= '&' . urlencode($key) . '=' . urlencode($value);
 		}
 		$uri = preg_replace('/&/', '?', $tempStr, 1);
-		$request = OAuthRequest::from_consumer_and_token($this->consumer,
+		$request = \OAuthRequest::from_consumer_and_token($this->consumer,
 														 $this->oauth_token,
 														 $httpMethod,
 														 $uri,
@@ -110,7 +114,7 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
 				curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
 		}
 		if ($isDownload) {
-			$tmpFile = OC_Helper::tmpFile();
+			$tmpFile = \OC_Helper::tmpFile();
 			$handle = fopen($tmpFile, 'w');
 			curl_setopt($curl, CURLOPT_FILE, $handle);
 		}
@@ -139,7 +143,7 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
 	private function getFeed($feedUri, $httpMethod, $postData = null) {
 		$result = $this->sendRequest($feedUri, $httpMethod, $postData);
 		if ($result) {
-			$dom = new DOMDocument();
+			$dom = new \DOMDocument();
 			$dom->loadXML($result);
 			return $dom;
 		}
@@ -194,6 +198,9 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
 		}
 	}
 
+	public function getId(){
+		return $this->id;
+	}
 
 	public function mkdir($path) {
 		$collection = dirname($path);
@@ -266,7 +273,7 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
 				$this->entries[$name] = $entry;
 			}
 		}
-		OC_FakeDirStream::$dirs['google'.$path] = $files;
+		\OC\Files\Stream\Dir::register('google'.$path, $files);
 		return opendir('fakedir://google'.$path);
 	}
 
@@ -287,7 +294,6 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
 				//$stat['atime'] = strtotime($entry->getElementsByTagNameNS('http://schemas.google.com/g/2005',
 				//															'lastViewed')->item(0)->nodeValue);
 				$stat['mtime'] = strtotime($entry->getElementsByTagName('updated')->item(0)->nodeValue);
-				$stat['ctime'] = strtotime($entry->getElementsByTagName('published')->item(0)->nodeValue);
 			}
 		}
 		if (isset($stat)) {
@@ -443,8 +449,8 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
 				} else {
 					$ext = '';
 				}
-				$tmpFile = OC_Helper::tmpFile($ext);
-				OC_CloseStreamWrapper::$callBacks[$tmpFile] = array($this, 'writeBack');
+				$tmpFile = \OC_Helper::tmpFile($ext);
+				\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
 				if ($this->file_exists($path)) {
 					$source = $this->fopen($path, 'r');
 					file_put_contents($tmpFile, $source);
@@ -482,7 +488,7 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
 		}
 		if (isset($uploadUri) && $handle = fopen($path, 'r')) {
 			$uploadUri .= '?convert=false';
-			$mimetype = OC_Helper::getMimeType($path);
+			$mimetype = \OC_Helper::getMimeType($path);
 			$size = filesize($path);
 			$headers = array('X-Upload-Content-Type: ' => $mimetype, 'X-Upload-Content-Length: ' => $size);
 			$postData = '<?xml version="1.0" encoding="UTF-8"?>';
@@ -590,4 +596,4 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
 
 	}
 
-}
\ No newline at end of file
+}
diff --git a/apps/files_external/lib/smb.php b/apps/files_external/lib/smb.php
index 071a9cd5f95..96778b0b2e1 100644
--- a/apps/files_external/lib/smb.php
+++ b/apps/files_external/lib/smb.php
@@ -6,9 +6,11 @@
  * See the COPYING-README file.
  */
 
+namespace OC\Files\Storage;
+
 require_once 'smb4php/smb.php';
 
-class OC_FileStorage_SMB extends OC_FileStorage_StreamWrapper{
+class SMB extends \OC\Files\Storage\StreamWrapper{
 	private $password;
 	private $user;
 	private $host;
@@ -30,14 +32,13 @@ class OC_FileStorage_SMB extends OC_FileStorage_StreamWrapper{
 		if ( ! $this->share || $this->share[0]!='/') {
 			$this->share='/'.$this->share;
 		}
-		if (substr($this->share, -1, 1)=='/') {
-			$this->share=substr($this->share, 0, -1);
+		if(substr($this->share, -1, 1)=='/') {
+			$this->share = substr($this->share,0,-1);
 		}
+	}
 
-		//create the root folder if necesary
-		if ( ! $this->is_dir('')) {
-			$this->mkdir('');
-		}
+	public function getId(){
+		return 'smb::' . $this->user . '@' . $this->host . '/' . $this->share . '/' . $this->root;
 	}
 
 	public function constructUrl($path) {
@@ -65,11 +66,13 @@ class OC_FileStorage_SMB extends OC_FileStorage_StreamWrapper{
 
 	/**
 	 * check if a file or folder has been updated since $time
+	 * @param string $path
 	 * @param int $time
 	 * @return bool
 	 */
-	public function hasUpdated($path, $time) {
-		if ( ! $path and $this->root=='/') {
+	public function hasUpdated($path,$time) {
+		$this->init();
+		if(!$path and $this->root=='/') {
 			// mtime doesn't work for shares, but giving the nature of the backend,
 			// doing a full update is still just fast enough
 			return true;
diff --git a/apps/files_external/lib/streamwrapper.php b/apps/files_external/lib/streamwrapper.php
index a386e333995..7c3ddcf8a2c 100644
--- a/apps/files_external/lib/streamwrapper.php
+++ b/apps/files_external/lib/streamwrapper.php
@@ -6,16 +6,33 @@
  * See the COPYING-README file.
  */
 
+namespace OC\Files\Storage;
+
+abstract class StreamWrapper extends \OC\Files\Storage\Common{
+	private $ready = false;
+
+	protected function init(){
+		if($this->ready){
+			return;
+		}
+		$this->ready = true;
+
+		//create the root folder if necesary
+		if(!$this->is_dir('')) {
+			$this->mkdir('');
+		}
+	}
 
-abstract class OC_FileStorage_StreamWrapper extends OC_Filestorage_Common{
 	abstract public function constructUrl($path);
 
 	public function mkdir($path) {
+		$this->init();
 		return mkdir($this->constructUrl($path));
 	}
 
 	public function rmdir($path) {
-		if ($this->file_exists($path)) {
+		$this->init();
+		if($this->file_exists($path)) {
 			$succes = rmdir($this->constructUrl($path));
 			clearstatcache();
 			return $succes;
@@ -25,10 +42,12 @@ abstract class OC_FileStorage_StreamWrapper extends OC_Filestorage_Common{
 	}
 
 	public function opendir($path) {
+		$this->init();
 		return opendir($this->constructUrl($path));
 	}
 
 	public function filetype($path) {
+		$this->init();
 		return filetype($this->constructUrl($path));
 	}
 
@@ -41,46 +60,54 @@ abstract class OC_FileStorage_StreamWrapper extends OC_Filestorage_Common{
 	}
 
 	public function file_exists($path) {
+		$this->init();
 		return file_exists($this->constructUrl($path));
 	}
 
 	public function unlink($path) {
+		$this->init();
 		$succes = unlink($this->constructUrl($path));
 		clearstatcache();
 		return $succes;
 	}
 
-	public function fopen($path, $mode) {
-		return fopen($this->constructUrl($path), $mode);
+	public function fopen($path,$mode) {
+		$this->init();
+		return fopen($this->constructUrl($path),$mode);
 	}
 
 	public function free_space($path) {
 		return 0;
 	}
 
-	public function touch($path, $mtime = null) {
-		if (is_null($mtime)) {
-			$fh = $this->fopen($path, 'a');
-			fwrite($fh, '');
+	public function touch($path,$mtime=null) {
+		$this->init();
+		if(is_null($mtime)) {
+			$fh = $this->fopen($path,'a');
+			fwrite($fh,'');
 			fclose($fh);
 		} else {
 			return false;//not supported
 		}
 	}
 
-	public function getFile($path, $target) {
-		return copy($this->constructUrl($path), $target);
+	public function getFile($path,$target) {
+		$this->init();
+		return copy($this->constructUrl($path),$target);
 	}
 
-	public function uploadFile($path, $target) {
-		return copy($path, $this->constructUrl($target));
+	public function uploadFile($path,$target) {
+		$this->init();
+		return copy($path,$this->constructUrl($target));
 	}
 
-	public function rename($path1, $path2) {
-		return rename($this->constructUrl($path1), $this->constructUrl($path2));
+	public function rename($path1,$path2) {
+		$this->init();
+		return rename($this->constructUrl($path1),$this->constructUrl($path2));
 	}
 
 	public function stat($path) {
+		$this->init();
 		return stat($this->constructUrl($path));
 	}
 
diff --git a/apps/files_external/lib/swift.php b/apps/files_external/lib/swift.php
index a071dfdbb03..cbf2007052b 100644
--- a/apps/files_external/lib/swift.php
+++ b/apps/files_external/lib/swift.php
@@ -6,24 +6,28 @@
  * See the COPYING-README file.
  */
 
+namespace OC\Files\Storage;
+
 require_once 'php-cloudfiles/cloudfiles.php';
 
-class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
+class SWIFT extends \OC\Files\Storage\Common{
+	private $id;
 	private $host;
 	private $root;
 	private $user;
 	private $token;
 	private $secure;
+	private $ready = false;
 	/**
-	 * @var CF_Authentication auth
+	 * @var \CF_Authentication auth
 	 */
 	private $auth;
 	/**
-	 * @var CF_Connection conn
+	 * @var \CF_Connection conn
 	 */
 	private $conn;
 	/**
-	 * @var CF_Container rootContainer
+	 * @var \CF_Container rootContainer
 	 */
 	private $rootContainer;
 
@@ -35,18 +39,18 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 
 	/**
 	 * translate directory path to container name
-	 * @param string path
+	 * @param string $path
 	 * @return string
 	 */
 	private function getContainerName($path) {
-		$path=trim(trim($this->root, '/')."/".$path, '/.');
+		$path=trim(trim($this->root, '/') . "/".$path, '/.');
 		return str_replace('/', '\\', $path);
 	}
 
 	/**
 	 * get container by path
-	 * @param string path
-	 * @return CF_Container
+	 * @param string $path
+	 * @return \CF_Container
 	 */
 	private function getContainer($path) {
 		if ($path=='' or $path=='/') {
@@ -59,15 +63,15 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 			$container=$this->conn->get_container($this->getContainerName($path));
 			$this->containers[$path]=$container;
 			return $container;
-		} catch(NoSuchContainerException $e) {
+		} catch(\NoSuchContainerException $e) {
 			return null;
 		}
 	}
 
 	/**
 	 * create container
-	 * @param string path
-	 * @return CF_Container
+	 * @param string $path
+	 * @return \CF_Container
 	 */
 	private function createContainer($path) {
 		if ($path=='' or $path=='/' or $path=='.') {
@@ -89,8 +93,8 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 
 	/**
 	 * get object by path
-	 * @param string path
-	 * @return CF_Object
+	 * @param string $path
+	 * @return \CF_Object
 	 */
 	private function getObject($path) {
 		if (isset($this->objects[$path])) {
@@ -107,7 +111,7 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 				$obj=$container->get_object(basename($path));
 				$this->objects[$path]=$obj;
 				return $obj;
-			} catch(NoSuchObjectException $e) {
+			} catch(\NoSuchObjectException $e) {
 				return null;
 			}
 		}
@@ -132,8 +136,8 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 
 	/**
 	 * create object
-	 * @param string path
-	 * @return CF_Object
+	 * @param string $path
+	 * @return \CF_Object
 	 */
 	private function createObject($path) {
 		$container=$this->getContainer(dirname($path));
@@ -154,7 +158,7 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 
 	/**
 	 * check if container for path exists
-	 * @param string path
+	 * @param string $path
 	 * @return bool
 	 */
 	private function containerExists($path) {
@@ -163,15 +167,15 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 
 	/**
 	 * get the list of emulated sub containers
-	 * @param CF_Container container
+	 * @param \CF_Container $container
 	 * @return array
 	 */
 	private function getSubContainers($container) {
-		$tmpFile=OCP\Files::tmpFile();
+		$tmpFile=\OCP\Files::tmpFile();
 		$obj=$this->getSubContainerFile($container);
 		try {
 			$obj->save_to_filename($tmpFile);
-		} catch(Exception $e) {
+		} catch(\Exception $e) {
 			return array();
 		}
 		$obj->save_to_filename($tmpFile);
@@ -185,15 +189,15 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 
 	/**
 	 * add an emulated sub container
-	 * @param CF_Container container
-	 * @param string name
+	 * @param \CF_Container $container
+	 * @param string $name
 	 * @return bool
 	 */
 	private function addSubContainer($container, $name) {
 		if ( ! $name) {
 			return false;
 		}
-		$tmpFile=OCP\Files::tmpFile();
+		$tmpFile=\OCP\Files::tmpFile();
 		$obj=$this->getSubContainerFile($container);
 		try {
 			$obj->save_to_filename($tmpFile);
@@ -201,16 +205,15 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 			foreach ($containers as &$sub) {
 				$sub=trim($sub);
 			}
-			if (array_search($name, $containers)!==false) {
+			if(array_search($name, $containers) !== false) {
 				unlink($tmpFile);
 				return false;
 			} else {
 				$fh=fopen($tmpFile, 'a');
-				fwrite($fh, $name."\n");
+				fwrite($fh,$name . "\n");
 			}
-		} catch(Exception $e) {
-			$containers=array();
-			file_put_contents($tmpFile, $name."\n");
+		} catch(\Exception $e) {
+			file_put_contents($tmpFile, $name . "\n");
 		}
 
 		$obj->load_from_filename($tmpFile);
@@ -220,20 +223,20 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 
 	/**
 	 * remove an emulated sub container
-	 * @param CF_Container container
-	 * @param string name
+	 * @param \CF_Container $container
+	 * @param string $name
 	 * @return bool
 	 */
 	private function removeSubContainer($container, $name) {
 		if ( ! $name) {
 			return false;
 		}
-		$tmpFile=OCP\Files::tmpFile();
+		$tmpFile=\OCP\Files::tmpFile();
 		$obj=$this->getSubContainerFile($container);
 		try {
 			$obj->save_to_filename($tmpFile);
 			$containers=file($tmpFile);
-		} catch (Exception $e) {
+		} catch (\Exception $e) {
 			return false;
 		}
 		foreach ($containers as &$sub) {
@@ -255,8 +258,8 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 
 	/**
 	 * ensure a subcontainer file exists and return it's object
-	 * @param CF_Container container
-	 * @return CF_Object
+	 * @param \CF_Container $container
+	 * @return \CF_Object
 	 */
 	private function getSubContainerFile($container) {
 		try {
@@ -283,10 +286,19 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 		if ( ! $this->root || $this->root[0]!='/') {
 			$this->root='/'.$this->root;
 		}
-		$this->auth = new CF_Authentication($this->user, $this->token, null, $this->host);
+
+	}
+
+	private function init(){
+		if($this->ready){
+			return;
+		}
+		$this->ready = true;
+
+		$this->auth = new \CF_Authentication($this->user, $this->token, null, $this->host);
 		$this->auth->authenticate();
 
-		$this->conn = new CF_Connection($this->auth);
+		$this->conn = new \CF_Connection($this->auth);
 
 		if ( ! $this->containerExists('/')) {
 			$this->rootContainer=$this->createContainer('/');
@@ -295,8 +307,13 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 		}
 	}
 
+	public function getId(){
+		return $this->id;
+	}
+
 
 	public function mkdir($path) {
+		$this->init();
 		if ($this->containerExists($path)) {
 			return false;
 		} else {
@@ -306,7 +323,8 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 	}
 
 	public function rmdir($path) {
-		if ( ! $this->containerExists($path)) {
+		$this->init();
+		if (!$this->containerExists($path)) {
 			return false;
 		} else {
 			$this->emptyContainer($path);
@@ -343,6 +361,7 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 	}
 
 	public function opendir($path) {
+		$this->init();
 		$container=$this->getContainer($path);
 		$files=$this->getObjects($container);
 		$i=array_search(self::SUBCONTAINER_FILE, $files);
@@ -352,11 +371,12 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 		$subContainers=$this->getSubContainers($container);
 		$files=array_merge($files, $subContainers);
 		$id=$this->getContainerName($path);
-		OC_FakeDirStream::$dirs[$id]=$files;
+		\OC\Files\Stream\Dir::register($id, $files);
 		return opendir('fakedir://'.$id);
 	}
 
 	public function filetype($path) {
+		$this->init();
 		if ($this->containerExists($path)) {
 			return 'dir';
 		} else {
@@ -373,6 +393,7 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 	}
 
 	public function file_exists($path) {
+		$this->init();
 		if ($this->is_dir($path)) {
 			return true;
 		} else {
@@ -381,6 +402,7 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 	}
 
 	public function file_get_contents($path) {
+		$this->init();
 		$obj=$this->getObject($path);
 		if (is_null($obj)) {
 			return false;
@@ -389,6 +411,7 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 	}
 
 	public function file_put_contents($path, $content) {
+		$this->init();
 		$obj=$this->getObject($path);
 		if (is_null($obj)) {
 			$container=$this->getContainer(dirname($path));
@@ -402,6 +425,7 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 	}
 
 	public function unlink($path) {
+		$this->init();
 		if ($this->containerExists($path)) {
 			return $this->rmdir($path);
 		}
@@ -415,6 +439,7 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 	}
 
 	public function fopen($path, $mode) {
+		$this->init();
 		switch($mode) {
 			case 'r':
 			case 'rb':
@@ -440,7 +465,7 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 			case 'c':
 			case 'c+':
 				$tmpFile=$this->getTmpFile($path);
-				OC_CloseStreamWrapper::$callBacks[$tmpFile]=array($this, 'writeBack');
+				\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
 				self::$tempFiles[$tmpFile]=$path;
 				return fopen('close://'.$tmpFile, $mode);
 		}
@@ -458,6 +483,7 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 	}
 
 	public function touch($path, $mtime=null) {
+		$this->init();
 		$obj=$this->getObject($path);
 		if (is_null($obj)) {
 			return false;
@@ -472,6 +498,7 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 	}
 
 	public function rename($path1, $path2) {
+		$this->init();
 		$sourceContainer=$this->getContainer(dirname($path1));
 		$targetContainer=$this->getContainer(dirname($path2));
 		$result=$sourceContainer->move_object_to(basename($path1), $targetContainer, basename($path2));
@@ -484,6 +511,7 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 	}
 
 	public function copy($path1, $path2) {
+		$this->init();
 		$sourceContainer=$this->getContainer(dirname($path1));
 		$targetContainer=$this->getContainer(dirname($path2));
 		$result=$sourceContainer->copy_object_to(basename($path1), $targetContainer, basename($path2));
@@ -495,6 +523,7 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 	}
 
 	public function stat($path) {
+		$this->init();
 		$container=$this->getContainer($path);
 		if ( ! is_null($container)) {
 			return array(
@@ -523,17 +552,19 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 	}
 
 	private function getTmpFile($path) {
+		$this->init();
 		$obj=$this->getObject($path);
 		if ( ! is_null($obj)) {
-			$tmpFile=OCP\Files::tmpFile();
+			$tmpFile=\OCP\Files::tmpFile();
 			$obj->save_to_filename($tmpFile);
 			return $tmpFile;
 		} else {
-			return OCP\Files::tmpFile();
+			return \OCP\Files::tmpFile();
 		}
 	}
 
 	private function fromTmpFile($tmpFile, $path) {
+		$this->init();
 		$obj=$this->getObject($path);
 		if (is_null($obj)) {
 			$obj=$this->createObject($path);
@@ -544,7 +575,7 @@ class OC_FileStorage_SWIFT extends OC_Filestorage_Common{
 
 	/**
 	 * remove custom mtime metadata
-	 * @param CF_Object obj
+	 * @param \CF_Object $obj
 	 */
 	private function resetMTime($obj) {
 		if (isset($obj->metadata['Mtime'])) {
diff --git a/apps/files_external/lib/webdav.php b/apps/files_external/lib/webdav.php
index 920aefc12de..571b4d79ae2 100644
--- a/apps/files_external/lib/webdav.php
+++ b/apps/files_external/lib/webdav.php
@@ -6,14 +6,17 @@
  * See the COPYING-README file.
  */
 
-class OC_FileStorage_DAV extends OC_Filestorage_Common{
+namespace OC\Files\Storage;
+
+class DAV extends \OC\Files\Storage\Common{
 	private $password;
 	private $user;
 	private $host;
 	private $secure;
 	private $root;
+	private $ready;
 	/**
-	 * @var Sabre_DAV_Client
+	 * @var \Sabre_DAV_Client
 	 */
 	private $client;
 
@@ -43,6 +46,13 @@ class OC_FileStorage_DAV extends OC_Filestorage_Common{
 		if (substr($this->root, -1, 1)!='/') {
 			$this->root.='/';
 		}
+	}
+
+	private function init(){
+		if($this->ready){
+			return;
+		}
+		$this->ready = true;
 
 		$settings = array(
 			'baseUri' => $this->createBaseUri(),
@@ -50,7 +60,7 @@ class OC_FileStorage_DAV extends OC_Filestorage_Common{
 			'password' => $this->password,
 		);
 
-		$this->client = new Sabre_DAV_Client($settings);
+		$this->client = new \Sabre_DAV_Client($settings);
 
 		$caview = \OCP\Files::getStorage('files_external');
 		if ($caview) {
@@ -63,6 +73,10 @@ class OC_FileStorage_DAV extends OC_Filestorage_Common{
 		$this->mkdir('');
 	}
 
+	public function getId(){
+		return 'webdav::' . $this->user . '@' . $this->host . '/' . $this->root;
+	}
+
 	private function createBaseUri() {
 		$baseUri='http';
 		if ($this->secure) {
@@ -73,40 +87,46 @@ class OC_FileStorage_DAV extends OC_Filestorage_Common{
 	}
 
 	public function mkdir($path) {
+		$this->init();
 		$path=$this->cleanPath($path);
 		return $this->simpleResponse('MKCOL', $path, null, 201);
 	}
 
 	public function rmdir($path) {
+		$this->init();
 		$path=$this->cleanPath($path);
 		return $this->simpleResponse('DELETE', $path, null, 204);
 	}
 
 	public function opendir($path) {
+		$this->init();
 		$path=$this->cleanPath($path);
 		try {
 			$response=$this->client->propfind($path, array(), 1);
 			$id=md5('webdav'.$this->root.$path);
-			OC_FakeDirStream::$dirs[$id]=array();
+			$content = array();
+			\OC_FakeDirStream::$dirs[$id]=array();
 			$files=array_keys($response);
 			array_shift($files);//the first entry is the current directory
 			foreach ($files as $file) {
 				$file = urldecode(basename($file));
-				OC_FakeDirStream::$dirs[$id][]=$file;
+				$content[]=$file;
 			}
+			\OC\Files\Stream\Dir::register($id, $content);
 			return opendir('fakedir://'.$id);
-		} catch(Exception $e) {
+		} catch(\Exception $e) {
 			return false;
 		}
 	}
 
 	public function filetype($path) {
+		$this->init();
 		$path=$this->cleanPath($path);
 		try {
 			$response=$this->client->propfind($path, array('{DAV:}resourcetype'));
 			$responseType=$response["{DAV:}resourcetype"]->resourceType;
 			return (count($responseType)>0 and $responseType[0]=="{DAV:}collection")?'dir':'file';
-		} catch(Exception $e) {
+		} catch(\Exception $e) {
 			error_log($e->getMessage());
 			\OCP\Util::writeLog("webdav client", \OCP\Util::sanitizeHTML($e->getMessage()), \OCP\Util::ERROR);
 			return false;
@@ -122,20 +142,23 @@ class OC_FileStorage_DAV extends OC_Filestorage_Common{
 	}
 
 	public function file_exists($path) {
+		$this->init();
 		$path=$this->cleanPath($path);
 		try {
 			$this->client->propfind($path, array('{DAV:}resourcetype'));
 			return true;//no 404 exception
-		} catch(Exception $e) {
+		} catch(\Exception $e) {
 			return false;
 		}
 	}
 
 	public function unlink($path) {
-		return $this->simpleResponse('DELETE', $path, null, 204);
+		$this->init();
+		return $this->simpleResponse('DELETE', $path, null ,204);
 	}
 
-	public function fopen($path, $mode) {
+	public function fopen($path,$mode) {
+		$this->init();
 		$path=$this->cleanPath($path);
 		switch($mode) {
 			case 'r':
@@ -172,9 +195,9 @@ class OC_FileStorage_DAV extends OC_Filestorage_Common{
 				} else {
 					$ext='';
 				}
-				$tmpFile=OCP\Files::tmpFile($ext);
-				OC_CloseStreamWrapper::$callBacks[$tmpFile]=array($this, 'writeBack');
-				if ($this->file_exists($path)) {
+				$tmpFile = \OCP\Files::tmpFile($ext);
+				\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
+				if($this->file_exists($path)) {
 					$this->getFile($path, $tmpFile);
 				}
 				self::$tempFiles[$tmpFile]=$path;
@@ -190,6 +213,7 @@ class OC_FileStorage_DAV extends OC_Filestorage_Common{
 	}
 
 	public function free_space($path) {
+		$this->init();
 		$path=$this->cleanPath($path);
 		try {
 			$response=$this->client->propfind($path, array('{DAV:}quota-available-bytes'));
@@ -198,12 +222,13 @@ class OC_FileStorage_DAV extends OC_Filestorage_Common{
 			} else {
 				return 0;
 			}
-		} catch(Exception $e) {
+		} catch(\Exception $e) {
 			return 0;
 		}
 	}
 
 	public function touch($path, $mtime=null) {
+		$this->init();
 		if (is_null($mtime)) {
 			$mtime=time();
 		}
@@ -211,12 +236,14 @@ class OC_FileStorage_DAV extends OC_Filestorage_Common{
 		$this->client->proppatch($path, array('{DAV:}lastmodified' => $mtime));
 	}
 
-	public function getFile($path, $target) {
-		$source=$this->fopen($path, 'r');
-		file_put_contents($target, $source);
+	public function getFile($path,$target) {
+		$this->init();
+		$source=$this->fopen($path,'r');
+		file_put_contents($target,$source);
 	}
 
-	public function uploadFile($path, $target) {
+	public function uploadFile($path,$target) {
+		$this->init();
 		$source=fopen($path, 'r');
 
 		$curl = curl_init();
@@ -230,47 +257,46 @@ class OC_FileStorage_DAV extends OC_Filestorage_Common{
 		curl_close ($curl);
 	}
 
-	public function rename($path1, $path2) {
+	public function rename($path1,$path2) {
+		$this->init();
 		$path1=$this->cleanPath($path1);
 		$path2=$this->root.$this->cleanPath($path2);
 		try {
 			$this->client->request('MOVE', $path1, null, array('Destination'=>$path2));
 			return true;
-		} catch(Exception $e) {
-			echo $e;
-			echo 'fail';
+		} catch(\Exception $e) {
 			return false;
 		}
 	}
 
-	public function copy($path1, $path2) {
+	public function copy($path1,$path2) {
+		$this->init();
 		$path1=$this->cleanPath($path1);
 		$path2=$this->root.$this->cleanPath($path2);
 		try {
 			$this->client->request('COPY', $path1, null, array('Destination'=>$path2));
 			return true;
-		} catch(Exception $e) {
-			echo $e;
-			echo 'fail';
+		} catch(\Exception $e) {
 			return false;
 		}
 	}
 
 	public function stat($path) {
+		$this->init();
 		$path=$this->cleanPath($path);
 		try {
 			$response=$this->client->propfind($path, array('{DAV:}getlastmodified', '{DAV:}getcontentlength'));
 			return array(
 				'mtime'=>strtotime($response['{DAV:}getlastmodified']),
 				'size'=>(int)isset($response['{DAV:}getcontentlength']) ? $response['{DAV:}getcontentlength'] : 0,
-				'ctime'=>-1,
 			);
-		} catch(Exception $e) {
+		} catch(\Exception $e) {
 			return array();
 		}
 	}
 
 	public function getMimeType($path) {
+		$this->init();
 		$path=$this->cleanPath($path);
 		try {
 			$response=$this->client->propfind($path, array('{DAV:}getcontenttype', '{DAV:}resourcetype'));
@@ -283,7 +309,7 @@ class OC_FileStorage_DAV extends OC_Filestorage_Common{
 			} else {
 				return false;
 			}
-		} catch(Exception $e) {
+		} catch(\Exception $e) {
 			return false;
 		}
 	}
@@ -296,12 +322,12 @@ class OC_FileStorage_DAV extends OC_Filestorage_Common{
 		}
 	}
 
-	private function simpleResponse($method, $path, $body, $expected) {
+	private function simpleResponse($method,$path,$body,$expected) {
 		$path=$this->cleanPath($path);
 		try {
 			$response=$this->client->request($method, $path, $body);
 			return $response['statusCode']==$expected;
-		} catch(Exception $e) {
+		} catch(\Exception $e) {
 			return false;
 		}
 	}
diff --git a/apps/files_external/personal.php b/apps/files_external/personal.php
index 4215b28787e..268d1880232 100755
--- a/apps/files_external/personal.php
+++ b/apps/files_external/personal.php
@@ -24,7 +24,7 @@ OCP\Util::addScript('files_external', 'settings');
 OCP\Util::addStyle('files_external', 'settings');
 $backends = OC_Mount_Config::getBackends();
 // Remove local storage
-unset($backends['OC_Filestorage_Local']);
+unset($backends['\OC\Files\Storage\Local']);
 $tmpl = new OCP\Template('files_external', 'settings');
 $tmpl->assign('isAdminPage', false, false);
 $tmpl->assign('mounts', OC_Mount_Config::getPersonalMountPoints());
diff --git a/apps/files_external/tests/amazons3.php b/apps/files_external/tests/amazons3.php
index 39f96fe8e55..6b3a942b5ba 100644
--- a/apps/files_external/tests/amazons3.php
+++ b/apps/files_external/tests/amazons3.php
@@ -20,7 +20,9 @@
  * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-class Test_Filestorage_AmazonS3 extends Test_FileStorage {
+namespace Test\Files\Storage;
+
+class AmazonS3 extends Storage {
 
 	private $config;
 	private $id;
@@ -32,12 +34,12 @@ class Test_Filestorage_AmazonS3 extends Test_FileStorage {
 			$this->markTestSkipped('AmazonS3 backend not configured');
 		}
 		$this->config['amazons3']['bucket'] = $id; // Make sure we have a new empty bucket to work in
-		$this->instance = new OC_Filestorage_AmazonS3($this->config['amazons3']);
+		$this->instance = new \OC\Files\Storage\AmazonS3($this->config['amazons3']);
 	}
 
 	public function tearDown() {
 		if ($this->instance) {
-			$s3 = new AmazonS3(array('key' => $this->config['amazons3']['key'],
+			$s3 = new \AmazonS3(array('key' => $this->config['amazons3']['key'],
 									 'secret' => $this->config['amazons3']['secret']));
 			if ($s3->delete_all_objects($this->id)) {
 				$s3->delete_bucket($this->id);
diff --git a/apps/files_external/tests/config.php b/apps/files_external/tests/config.php
index ff16b1c1d8a..65127175ad7 100644
--- a/apps/files_external/tests/config.php
+++ b/apps/files_external/tests/config.php
@@ -8,7 +8,7 @@ return array(
 		'root'=>'/test',
 	),
 	'webdav'=>array(
-		'run'=>false,
+		'run'=>true,
 		'host'=>'localhost',
 		'user'=>'test',
 		'password'=>'test',
@@ -30,7 +30,7 @@ return array(
 		'root'=>'/',
 	),
 	'smb'=>array(
-		'run'=>false,
+		'run'=>true,
 		'user'=>'test',
 		'password'=>'test',
 		'host'=>'localhost',
diff --git a/apps/files_external/tests/dropbox.php b/apps/files_external/tests/dropbox.php
index 304cb3ca38c..e4e598b06b0 100644
--- a/apps/files_external/tests/dropbox.php
+++ b/apps/files_external/tests/dropbox.php
@@ -6,7 +6,9 @@
  * See the COPYING-README file.
  */
 
-class Test_Filestorage_Dropbox extends Test_FileStorage {
+namespace Test\Files\Storage;
+
+class Dropbox extends Storage {
 	private $config;
 
 	public function setUp() {
@@ -16,7 +18,7 @@ class Test_Filestorage_Dropbox extends Test_FileStorage {
 			$this->markTestSkipped('Dropbox backend not configured');
 		}
 		$this->config['dropbox']['root'] .= '/' . $id; //make sure we have an new empty folder to work in
-		$this->instance = new OC_Filestorage_Dropbox($this->config['dropbox']);
+		$this->instance = new \OC\Files\Storage\Dropbox($this->config['dropbox']);
 	}
 
 	public function tearDown() {
diff --git a/apps/files_external/tests/ftp.php b/apps/files_external/tests/ftp.php
index 91e4589ed18..923b5e39681 100644
--- a/apps/files_external/tests/ftp.php
+++ b/apps/files_external/tests/ftp.php
@@ -6,7 +6,9 @@
  * See the COPYING-README file.
  */
 
-class Test_Filestorage_FTP extends Test_FileStorage {
+namespace Test\Files\Storage;
+
+class FTP extends Storage {
 	private $config;
 
 	public function setUp() {
@@ -16,12 +18,12 @@ class Test_Filestorage_FTP extends Test_FileStorage {
 			$this->markTestSkipped('FTP backend not configured');
 		}
 		$this->config['ftp']['root'] .= '/' . $id; //make sure we have an new empty folder to work in
-		$this->instance = new OC_Filestorage_FTP($this->config['ftp']);
+		$this->instance = new \OC\Files\Storage\FTP($this->config['ftp']);
 	}
 
 	public function tearDown() {
 		if ($this->instance) {
-			OCP\Files::rmdirr($this->instance->constructUrl(''));
+			\OCP\Files::rmdirr($this->instance->constructUrl(''));
 		}
 	}
 
diff --git a/apps/files_external/tests/google.php b/apps/files_external/tests/google.php
index 379bf992ff5..f344163a8b9 100644
--- a/apps/files_external/tests/google.php
+++ b/apps/files_external/tests/google.php
@@ -20,8 +20,9 @@
  * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-class Test_Filestorage_Google extends Test_FileStorage {
+namespace Test\Files\Storage;
 
+class Google extends Storage {
 	private $config;
 
 	public function setUp() {
@@ -31,7 +32,7 @@ class Test_Filestorage_Google extends Test_FileStorage {
 			$this->markTestSkipped('Google backend not configured');
 		}
 		$this->config['google']['root'] .= '/' . $id; //make sure we have an new empty folder to work in
-		$this->instance = new OC_Filestorage_Google($this->config['google']);
+		$this->instance = new \OC\Files\Storage\Google($this->config['google']);
 	}
 
 	public function tearDown() {
diff --git a/apps/files_external/tests/smb.php b/apps/files_external/tests/smb.php
index 2d6268ef269..be3ea5a8308 100644
--- a/apps/files_external/tests/smb.php
+++ b/apps/files_external/tests/smb.php
@@ -6,7 +6,10 @@
  * See the COPYING-README file.
  */
 
-class Test_Filestorage_SMB extends Test_FileStorage {
+namespace Test\Files\Storage;
+
+class SMB extends Storage {
+
 	private $config;
 
 	public function setUp() {
@@ -16,12 +19,12 @@ class Test_Filestorage_SMB extends Test_FileStorage {
 			$this->markTestSkipped('Samba backend not configured');
 		}
 		$this->config['smb']['root'] .= $id; //make sure we have an new empty folder to work in
-		$this->instance = new OC_Filestorage_SMB($this->config['smb']);
+		$this->instance = new \OC\Files\Storage\SMB($this->config['smb']);
 	}
 
 	public function tearDown() {
 		if ($this->instance) {
-			OCP\Files::rmdirr($this->instance->constructUrl(''));
+			\OCP\Files::rmdirr($this->instance->constructUrl(''));
 		}
 	}
 }
diff --git a/apps/files_external/tests/swift.php b/apps/files_external/tests/swift.php
index 8b25db50996..5c782840246 100644
--- a/apps/files_external/tests/swift.php
+++ b/apps/files_external/tests/swift.php
@@ -6,7 +6,9 @@
  * See the COPYING-README file.
  */
 
-class Test_Filestorage_SWIFT extends Test_FileStorage {
+namespace Test\Files\Storage;
+
+class SWIFT extends Storage {
 	private $config;
 
 	public function setUp() {
@@ -16,7 +18,7 @@ class Test_Filestorage_SWIFT extends Test_FileStorage {
 			$this->markTestSkipped('OpenStack SWIFT backend not configured');
 		}
 		$this->config['swift']['root'] .= '/' . $id; //make sure we have an new empty folder to work in
-		$this->instance = new OC_Filestorage_SWIFT($this->config['swift']);
+		$this->instance = new \OC\Files\Storage\SWIFT($this->config['swift']);
 	}
 
 
diff --git a/apps/files_external/tests/webdav.php b/apps/files_external/tests/webdav.php
index dd938a0c93a..1702898045e 100644
--- a/apps/files_external/tests/webdav.php
+++ b/apps/files_external/tests/webdav.php
@@ -6,7 +6,10 @@
  * See the COPYING-README file.
  */
 
-class Test_Filestorage_DAV extends Test_FileStorage {
+namespace Test\Files\Storage;
+
+class DAV extends Storage {
+
 	private $config;
 
 	public function setUp() {
@@ -16,7 +19,7 @@ class Test_Filestorage_DAV extends Test_FileStorage {
 			$this->markTestSkipped('WebDAV backend not configured');
 		}
 		$this->config['webdav']['root'] .= '/' . $id; //make sure we have an new empty folder to work in
-		$this->instance = new OC_Filestorage_DAV($this->config['webdav']);
+		$this->instance = new \OC\Files\Storage\DAV($this->config['webdav']);
 	}
 
 	public function tearDown() {
diff --git a/apps/files_sharing/appinfo/app.php b/apps/files_sharing/appinfo/app.php
index 0104d0d017f..d3e05cc62d8 100644
--- a/apps/files_sharing/appinfo/app.php
+++ b/apps/files_sharing/appinfo/app.php
@@ -2,8 +2,11 @@
 
 OC::$CLASSPATH['OC_Share_Backend_File'] = "apps/files_sharing/lib/share/file.php";
 OC::$CLASSPATH['OC_Share_Backend_Folder'] = 'apps/files_sharing/lib/share/folder.php';
-OC::$CLASSPATH['OC_Filestorage_Shared'] = "apps/files_sharing/lib/sharedstorage.php";
-OCP\Util::connectHook('OC_Filesystem', 'setup', 'OC_Filestorage_Shared', 'setup');
+OC::$CLASSPATH['OC\Files\Storage\Shared'] = "apps/files_sharing/lib/sharedstorage.php";
+OC::$CLASSPATH['OC\Files\Cache\Shared_Cache'] = 'apps/files_sharing/lib/cache.php';
+OC::$CLASSPATH['OC\Files\Cache\Shared_Permissions'] = 'apps/files_sharing/lib/permissions.php';
+OC::$CLASSPATH['OC\Files\Cache\Shared_Watcher'] = 'apps/files_sharing/lib/watcher.php';
+OCP\Util::connectHook('OC_Filesystem', 'setup', '\OC\Files\Storage\Shared', 'setup');
 OCP\Share::registerBackend('file', 'OC_Share_Backend_File');
 OCP\Share::registerBackend('folder', 'OC_Share_Backend_Folder', 'file');
-OCP\Util::addScript('files_sharing', 'share');
\ No newline at end of file
+OCP\Util::addScript('files_sharing', 'share');
diff --git a/apps/files_sharing/appinfo/info.xml b/apps/files_sharing/appinfo/info.xml
index a44d0338bb6..1f24a4dde83 100644
--- a/apps/files_sharing/appinfo/info.xml
+++ b/apps/files_sharing/appinfo/info.xml
@@ -5,7 +5,7 @@
 	<description>File sharing between users</description>
 	<licence>AGPL</licence>
 	<author>Michael Gapczynski</author>
-	<require>4.9</require>
+	<require>4.91</require>
 	<shipped>true</shipped>
 	<default_enable/>
 	<types>
diff --git a/apps/files_sharing/appinfo/update.php b/apps/files_sharing/appinfo/update.php
index e998626f4a4..1d22b32b503 100644
--- a/apps/files_sharing/appinfo/update.php
+++ b/apps/files_sharing/appinfo/update.php
@@ -9,10 +9,12 @@ if (version_compare($installedVersion, '0.3', '<')) {
 	OC_User::useBackend(new OC_User_Database());
 	OC_Group::useBackend(new OC_Group_Database());
 	OC_App::loadApps(array('authentication'));
+	$rootView = new \OC\Files\View('');
 	while ($row = $result->fetchRow()) {
-		$itemSource = OC_FileCache::getId($row['source'], '');
+		$meta = $rootView->getFileInfo($$row['source']);
+		$itemSource = $meta['fileid'];
 		if ($itemSource != -1) {
-			$file = OC_FileCache::get($row['source'], '');
+			$file = $meta;
 			if ($file['mimetype'] == 'httpd/unix-directory') {
 				$itemType = 'folder';
 			} else {
@@ -68,6 +70,6 @@ if (version_compare($installedVersion, '0.3.3', '<')) {
 	OC_App::loadApps(array('authentication'));
 	$users = OC_User::getUsers();
 	foreach ($users as $user) {
-		OC_FileCache::delete('Shared', '/'.$user.'/files/');
+//		OC_FileCache::delete('Shared', '/'.$user.'/files/');
 	}
-}
\ No newline at end of file
+}
diff --git a/apps/files_sharing/lib/cache.php b/apps/files_sharing/lib/cache.php
new file mode 100644
index 00000000000..9655e447875
--- /dev/null
+++ b/apps/files_sharing/lib/cache.php
@@ -0,0 +1,258 @@
+<?php
+/**
+ * ownCloud
+ *
+ * @author Michael Gapczynski
+ * @copyright 2012 Michael Gapczynski mtgap@owncloud.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace OC\Files\Cache;
+
+/**
+ * Metadata cache for shared files
+ *
+ * don't use this class directly if you need to get metadata, use \OC\Files\Filesystem::getFileInfo instead
+ */
+class Shared_Cache extends Cache {
+
+	private $files = array();
+
+	public function __construct($storage) {
+
+	}
+
+	/**
+	 * @brief Get the source cache of a shared file or folder
+	 * @param string $target Shared target file path
+	 * @return \OC\Files\Cache\Cache
+	 */
+	private function getSourceCache($target) {
+		$source = \OC_Share_Backend_File::getSource($target);
+		if (isset($source['path'])) {
+			$source['path'] = '/' . $source['uid_owner'] . '/' . $source['path'];
+			\OC\Files\Filesystem::initMountPoints($source['uid_owner']);
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source['path']);
+			if ($storage) {
+				$this->files[$target] = $internalPath;
+				$cache = $storage->getCache();
+				$this->storageId = $storage->getId();
+				$this->numericId = $cache->getNumericStorageId();
+				return $cache;
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * get the stored metadata of a file or folder
+	 *
+	 * @param string/int $file
+	 * @return array
+	 */
+	public function get($file) {
+		if ($file == '') {
+			return \OCP\Share::getItemsSharedWith('file', \OC_Share_Backend_File::FORMAT_FILE_APP_ROOT);
+		} else if (is_string($file)) {
+			if ($cache = $this->getSourceCache($file)) {
+				return $cache->get($this->files[$file]);
+			}
+		} else {
+			$query = \OC_DB::prepare(
+				'SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`, `encrypted`
+				FROM `*PREFIX*filecache` WHERE `fileid` = ?');
+			$result = $query->execute(array($file));
+			$data = $result->fetchRow();
+			$data['fileid'] = (int)$data['fileid'];
+			$data['size'] = (int)$data['size'];
+			$data['mtime'] = (int)$data['mtime'];
+			$data['encrypted'] = (bool)$data['encrypted'];
+			$data['mimetype'] = $this->getMimetype($data['mimetype']);
+			$data['mimepart'] = $this->getMimetype($data['mimepart']);
+			return $data;
+		}
+		return false;
+	}
+
+	/**
+	 * get the metadata of all files stored in $folder
+	 *
+	 * @param string $folder
+	 * @return array
+	 */
+	public function getFolderContents($folder) {
+		if ($folder == '') {
+			$files = \OCP\Share::getItemsSharedWith('file', \OC_Share_Backend_File::FORMAT_GET_FOLDER_CONTENTS);
+			foreach ($files as &$file) {
+				$file['mimetype'] = $this->getMimetype($file['mimetype']);
+				$file['mimepart'] = $this->getMimetype($file['mimepart']);
+			}
+			return $files;
+		} else {
+			if ($cache = $this->getSourceCache($folder)) {
+				return $cache->getFolderContents($this->files[$folder]);
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * store meta data for a file or folder
+	 *
+	 * @param string $file
+	 * @param array $data
+	 *
+	 * @return int file id
+	 */
+	public function put($file, array $data) {
+		if ($cache = $this->getSourceCache($file)) {
+			return $cache->put($this->files[$file], $data);
+		}
+		return false;
+	}
+
+	/**
+	 * get the file id for a file
+	 *
+	 * @param string $file
+	 * @return int
+	 */
+	public function getId($file) {
+		if ($cache = $this->getSourceCache($file)) {
+			return $cache->getId($this->files[$file]);
+		}
+		return -1;
+	}
+
+	/**
+	 * check if a file is available in the cache
+	 *
+	 * @param string $file
+	 * @return bool
+	 */
+	public function inCache($file) {
+		if ($file == '') {
+			return true;
+		}
+		return parent::inCache($file);
+	}
+
+	/**
+	 * remove a file or folder from the cache
+	 *
+	 * @param string $file
+	 */
+	public function remove($file) {
+		if ($cache = $this->getSourceCache($file)) {
+			$cache->remove($this->files[$file]);
+		}
+	}
+
+	/**
+	 * Move a file or folder in the cache
+	 *
+	 * @param string $source
+	 * @param string $target
+	 */
+	public function move($source, $target) {
+		if ($cache = $this->getSourceCache($source)) {
+			$targetPath = \OC_Share_Backend_File::getSourcePath(dirname($target));
+			if ($targetPath) {
+				$targetPath .= '/' . basename($target);
+				$cache->move($this->files[$source], $targetPath);
+			}
+
+		}
+	}
+
+	/**
+	 * remove all entries for files that are stored on the storage from the cache
+	 */
+	public function clear() {
+		// Not a valid action for Shared Cache
+	}
+
+	/**
+	 * @param string $file
+	 *
+	 * @return int, Cache::NOT_FOUND, Cache::PARTIAL, Cache::SHALLOW or Cache::COMPLETE
+	 */
+	public function getStatus($file) {
+		if ($file == '') {
+			return self::COMPLETE;
+		}
+		if ($cache = $this->getSourceCache($file)) {
+			return $cache->getStatus($this->files[$file]);
+		}
+		return self::NOT_FOUND;
+	}
+
+	/**
+	 * search for files matching $pattern
+	 *
+	 * @param string $pattern
+	 * @return array of file data
+	 */
+	public function search($pattern) {
+		// TODO
+	}
+
+	/**
+	 * search for files by mimetype
+	 *
+	 * @param string $part1
+	 * @param string $part2
+	 * @return array
+	 */
+	public function searchByMime($mimetype) {
+		if (strpos($mimetype, '/')) {
+			$where = '`mimetype` = ?';
+		} else {
+			$where = '`mimepart` = ?';
+		}
+		$mimetype = $this->getMimetypeId($mimetype);
+		$ids = $this->getAll();
+		$placeholders = join(',', array_fill(0, count($ids), '?'));
+		$query = \OC_DB::prepare('
+			SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`, `encrypted`
+			FROM `*PREFIX*filecache` WHERE ' . $where . ' AND `fileid` IN (' . $placeholders . ')'
+		);
+		$result = $query->execute(array_merge(array($mimetype), $ids));
+		return $result->fetchAll();
+	}
+
+	/**
+	 * get the size of a folder and set it in the cache
+	 *
+	 * @param string $path
+	 * @return int
+	 */
+	public function calculateFolderSize($path) {
+		if ($cache = $this->getSourceCache($path)) {
+			return $cache->calculateFolderSize($this->files[$path]);
+		}
+		return 0;
+	}
+
+	/**
+	 * get all file ids on the files on the storage
+	 *
+	 * @return int[]
+	 */
+	public function getAll() {
+		return \OCP\Share::getItemsSharedWith('file', \OC_Share_Backend_File::FORMAT_GET_ALL);
+	}
+
+}
diff --git a/apps/files_sharing/lib/permissions.php b/apps/files_sharing/lib/permissions.php
new file mode 100644
index 00000000000..2b068ff9350
--- /dev/null
+++ b/apps/files_sharing/lib/permissions.php
@@ -0,0 +1,85 @@
+<?php
+/**
+* ownCloud
+*
+* @author Michael Gapczynski
+* @copyright 2012 Michael Gapczynski mtgap@owncloud.com
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+* License as published by the Free Software Foundation; either
+* version 3 of the License, or any later version.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+*
+* You should have received a copy of the GNU Affero General Public
+* License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+*/
+namespace OC\Files\Cache;
+
+class Shared_Permissions extends Permissions {
+
+	/**
+	 * get the permissions for a single file
+	 *
+	 * @param int $fileId
+	 * @param string $user
+	 * @return int (-1 if file no permissions set)
+	 */
+	public function get($fileId, $user) {
+		if ($fileId == -1) {
+			return \OCP\PERMISSION_READ;
+		}
+		$source = \OCP\Share::getItemSharedWithBySource('file', $fileId, \OC_Share_Backend_File::FORMAT_SHARED_STORAGE, null, true);
+		if ($source) {
+			return $source['permissions'];
+		} else {
+			return -1;
+		}
+	}
+
+	/**
+	 * set the permissions of a file
+	 *
+	 * @param int $fileId
+	 * @param string $user
+	 * @param int $permissions
+	 */
+	public function set($fileId, $user, $permissions) {
+		// Not a valid action for Shared Permissions
+	}
+
+	/**
+	 * get the permissions of multiply files
+	 *
+	 * @param int[] $fileIds
+	 * @param string $user
+	 * @return int[]
+	 */
+	public function getMultiple($fileIds, $user) {
+		if (count($fileIds) === 0) {
+			return array();
+		}
+		foreach ($fileIds as $fileId) {
+			$filePermissions[$fileId] = self::get($fileId, $user);
+		}
+		return $filePermissions;
+	}
+
+	/**
+	 * remove the permissions for a file
+	 *
+	 * @param int $fileId
+	 * @param string $user
+	 */
+	public function remove($fileId, $user) {
+		// Not a valid action for Shared Permissions
+	}
+
+	public function removeMultiple($fileIds, $user) {
+		// Not a valid action for Shared Permissions
+	}
+}
diff --git a/apps/files_sharing/lib/share/file.php b/apps/files_sharing/lib/share/file.php
index ac585236831..6d3c55a008f 100644
--- a/apps/files_sharing/lib/share/file.php
+++ b/apps/files_sharing/lib/share/file.php
@@ -22,16 +22,18 @@
 class OC_Share_Backend_File implements OCP\Share_Backend_File_Dependent {
 
 	const FORMAT_SHARED_STORAGE = 0;
-	const FORMAT_FILE_APP = 1;
+	const FORMAT_GET_FOLDER_CONTENTS = 1;
 	const FORMAT_FILE_APP_ROOT = 2;
 	const FORMAT_OPENDIR = 3;
+	const FORMAT_GET_ALL = 4;
 
 	private $path;
 
 	public function isValidSource($itemSource, $uidOwner) {
-		$path = OC_FileCache::getPath($itemSource, $uidOwner);
-		if ($path) {
-			$this->path = $path;
+		$query = \OC_DB::prepare('SELECT `name` FROM `*PREFIX*filecache` WHERE `fileid` = ?');
+		$result = $query->execute(array($itemSource));
+		if ($row = $result->fetchRow()) {
+			$this->path = $row['name'];
 			return true;
 		}
 		return false;
@@ -70,37 +72,21 @@ class OC_Share_Backend_File implements OCP\Share_Backend_File_Dependent {
 	public function formatItems($items, $format, $parameters = null) {
 		if ($format == self::FORMAT_SHARED_STORAGE) {
 			// Only 1 item should come through for this format call
-			return array('path' => $items[key($items)]['path'], 'permissions' => $items[key($items)]['permissions']);
-		} else if ($format == self::FORMAT_FILE_APP) {
-			if (isset($parameters['mimetype_filter']) && $parameters['mimetype_filter']) {
-				$mimetype_filter = $parameters['mimetype_filter'];
-			}
+			return array('path' => $items[key($items)]['path'], 'permissions' => $items[key($items)]['permissions'], 'uid_owner' => $items[key($items)]['uid_owner']);
+		} else if ($format == self::FORMAT_GET_FOLDER_CONTENTS) {
 			$files = array();
 			foreach ($items as $item) {
-				if (isset($mimetype_filter)
-					&& strpos($item['mimetype'], $mimetype_filter) !== 0
-					&& $item['mimetype'] != 'httpd/unix-directory') {
-					continue;
-				}
 				$file = array();
-				$file['id'] = $item['file_source'];
+				$file['fileid'] = $item['file_source'];
+				$file['storage'] = $item['storage'];
 				$file['path'] = $item['file_target'];
+				$file['parent'] = $item['file_parent'];
 				$file['name'] = basename($item['file_target']);
-				$file['ctime'] = $item['ctime'];
-				$file['mtime'] = $item['mtime'];
 				$file['mimetype'] = $item['mimetype'];
+				$file['mimepart'] = $item['mimepart'];
 				$file['size'] = $item['size'];
+				$file['mtime'] = $item['mtime'];
 				$file['encrypted'] = $item['encrypted'];
-				$file['versioned'] = $item['versioned'];
-				$file['directory'] = $parameters['folder'];
-				$file['type'] = ($item['mimetype'] == 'httpd/unix-directory') ? 'dir' : 'file';
-				$file['permissions'] = $item['permissions'];
-				if ($file['type'] == 'file') {
-					// Remove Create permission if type is file
-					$file['permissions'] &= ~OCP\PERMISSION_CREATE;
-				}
-				// NOTE: Temporary fix to allow unsharing of files in root of Shared directory
-				$file['permissions'] |= OCP\PERMISSION_DELETE;
 				$files[] = $file;
 			}
 			return $files;
@@ -111,17 +97,48 @@ class OC_Share_Backend_File implements OCP\Share_Backend_File_Dependent {
 				if ($item['mtime'] > $mtime) {
 					$mtime = $item['mtime'];
 				}
-				$size += $item['size'];
+				$size += (int)$item['size'];
 			}
-			return array(0 => array('id' => -1, 'name' => 'Shared', 'mtime' => $mtime, 'mimetype' => 'httpd/unix-directory', 'size' => $size, 'writable' => false, 'type' => 'dir', 'directory' => '', 'permissions' => OCP\PERMISSION_READ));
+			return array('fileid' => -1, 'name' => 'Shared', 'mtime' => $mtime, 'mimetype' => 'httpd/unix-directory', 'size' => $size);
 		} else if ($format == self::FORMAT_OPENDIR) {
 			$files = array();
 			foreach ($items as $item) {
 				$files[] = basename($item['file_target']);
 			}
 			return $files;
+		} else if ($format == self::FORMAT_GET_ALL) {
+			$ids = array();
+			foreach ($items as $item) {
+				$ids[] = $item['file_source'];
+			}
+			return $ids;
 		}
 		return array();
 	}
 
+	public static function getSource($target) {
+		if ($target == '') {
+			return false;
+		}
+		$target = '/'.$target;
+		$target = rtrim($target, '/');
+		$pos = strpos($target, '/', 1);
+		// Get shared folder name
+		if ($pos !== false) {
+			$folder = substr($target, 0, $pos);
+			$source = \OCP\Share::getItemSharedWith('folder', $folder, \OC_Share_Backend_File::FORMAT_SHARED_STORAGE);
+			if ($source) {
+				$source['path'] = $source['path'].substr($target, strlen($folder));
+				return $source;
+			}
+		} else {
+			$source = \OCP\Share::getItemSharedWith('file', $target, \OC_Share_Backend_File::FORMAT_SHARED_STORAGE);
+			if ($source) {
+				return $source;
+			}
+		}
+		\OCP\Util::writeLog('files_sharing', 'File source not found for: '.$target, \OCP\Util::ERROR);
+		return false;
+	}
+
 }
diff --git a/apps/files_sharing/lib/share/folder.php b/apps/files_sharing/lib/share/folder.php
index d414fcf10fc..11c8c6b1e80 100644
--- a/apps/files_sharing/lib/share/folder.php
+++ b/apps/files_sharing/lib/share/folder.php
@@ -21,47 +21,26 @@
 
 class OC_Share_Backend_Folder extends OC_Share_Backend_File implements OCP\Share_Backend_Collection {
 
-	public function formatItems($items, $format, $parameters = null) {
-		if ($format == self::FORMAT_SHARED_STORAGE) {
-			// Only 1 item should come through for this format call
-			return array('path' => $items[key($items)]['path'], 'permissions' => $items[key($items)]['permissions']);
-		} else if ($format == self::FORMAT_FILE_APP && isset($parameters['folder'])) {
-			// Only 1 item should come through for this format call
-			$folder = $items[key($items)];
-			if (isset($parameters['mimetype_filter'])) {
-				$mimetype_filter = $parameters['mimetype_filter'];
-			} else {
-				$mimetype_filter = '';
-			}
-			$path = $folder['path'].substr($parameters['folder'], 7 + strlen($folder['file_target']));
-			$files = OC_FileCache::getFolderContent($path, '', $mimetype_filter);
-			foreach ($files as &$file) {
-				$file['directory'] = $parameters['folder'];
-				$file['type'] = ($file['mimetype'] == 'httpd/unix-directory') ? 'dir' : 'file';
-				$file['permissions'] = $folder['permissions'];
-				if ($file['type'] == 'file') {
-					// Remove Create permission if type is file
-					$file['permissions'] &= ~OCP\PERMISSION_CREATE;
-				}
-			}
-			return $files;
-		}
-		return array();
-	}
-
 	public function getChildren($itemSource) {
 		$children = array();
 		$parents = array($itemSource);
+		$query = \OC_DB::prepare('SELECT `id` FROM `*PREFIX*mimetypes` WHERE `mimetype` = ?');
+		$result = $query->execute(array('httpd/unix-directory'));
+		if ($row = $result->fetchRow()) {
+			$mimetype = $row['id'];
+		} else {
+			$mimetype = -1;
+		}
 		while (!empty($parents)) {
 			$parents = "'".implode("','", $parents)."'";
-			$query = OC_DB::prepare('SELECT `id`, `name`, `mimetype` FROM `*PREFIX*fscache` WHERE `parent` IN ('.$parents.')');
+			$query = OC_DB::prepare('SELECT `fileid`, `name`, `mimetype` FROM `*PREFIX*filecache` WHERE `parent` IN ('.$parents.')');
 			$result = $query->execute();
 			$parents = array();
 			while ($file = $result->fetchRow()) {
-				$children[] = array('source' => $file['id'], 'file_path' => $file['name']);
+				$children[] = array('source' => $file['fileid'], 'file_path' => $file['name']);
 				// If a child folder is found look inside it
-				if ($file['mimetype'] == 'httpd/unix-directory') {
-					$parents[] = $file['id'];
+				if ($file['mimetype'] == $mimetype) {
+					$parents[] = $file['fileid'];
 				}
 			}
 		}
diff --git a/apps/files_sharing/lib/sharedstorage.php b/apps/files_sharing/lib/sharedstorage.php
index 50db9166fe7..ea28ca69b93 100644
--- a/apps/files_sharing/lib/sharedstorage.php
+++ b/apps/files_sharing/lib/sharedstorage.php
@@ -20,10 +20,12 @@
  *
  */
 
+namespace OC\Files\Storage;
+
 /**
  * Convert target path to source path and pass the function call to the correct storage provider
  */
-class OC_Filestorage_Shared extends OC_Filestorage_Common {
+class Shared extends \OC\Files\Storage\Common {
 
 	private $sharedFolder;
 	private $files = array();
@@ -32,54 +34,36 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 		$this->sharedFolder = $arguments['sharedFolder'];
 	}
 
+	public function getId(){
+		return 'shared::' . $this->sharedFolder;
+	}
+
 	/**
-	* @brief Get the source file path and the permissions granted for a shared file
+	* @brief Get the source file path, permissions, and owner for a shared file
 	* @param string Shared target file path
-	* @return Returns array with the keys path and permissions or false if not found
+	* @return Returns array with the keys path, permissions, and owner or false if not found
 	*/
 	private function getFile($target) {
-		$target = '/'.$target;
-		$target = rtrim($target, '/');
-		if (isset($this->files[$target])) {
-			return $this->files[$target];
-		} else {
-			$pos = strpos($target, '/', 1);
-			// Get shared folder name
-			if ($pos !== false) {
-				$folder = substr($target, 0, $pos);
-				if (isset($this->files[$folder])) {
-					$file = $this->files[$folder];
-				} else {
-					$file = OCP\Share::getItemSharedWith('folder', $folder, OC_Share_Backend_File::FORMAT_SHARED_STORAGE);
-				}
-				if ($file) {
-					$this->files[$target]['path'] = $file['path'].substr($target, strlen($folder));
-					$this->files[$target]['permissions'] = $file['permissions'];
-					return $this->files[$target];
-				}
-			} else {
-				$file = OCP\Share::getItemSharedWith('file', $target, OC_Share_Backend_File::FORMAT_SHARED_STORAGE);
-				if ($file) {
-					$this->files[$target] = $file;
-					return $this->files[$target];
-				}
+		if (!isset($this->files[$target])) {
+			$source = \OC_Share_Backend_File::getSource($target);
+			if ($source) {
+				$source['path'] = '/'.$source['uid_owner'].'/'.$source['path'];
 			}
-			OCP\Util::writeLog('files_sharing', 'File source not found for: '.$target, OCP\Util::ERROR);
-			return false;
+			$this->files[$target] = $source;
 		}
+		return $this->files[$target];
 	}
 
 	/**
 	* @brief Get the source file path for a shared file
 	* @param string Shared target file path
-	* @return Returns source file path or false if not found
+	* @return string source file path or false if not found
 	*/
 	private function getSourcePath($target) {
-		$file = $this->getFile($target);
-		if (isset($file['path'])) {
-			$uid = substr($file['path'], 1, strpos($file['path'], '/', 1) - 1);
-			OC_Filesystem::mount('OC_Filestorage_Local', array('datadir' => OC_User::getHome($uid)), $uid);
-			return $file['path'];
+		$source = $this->getFile($target);
+		if ($source) {
+			\OC\Files\Filesystem::initMountPoints($source['uid_owner']);
+			return $source['path'];
 		}
 		return false;
 	}
@@ -87,61 +71,42 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 	/**
 	* @brief Get the permissions granted for a shared file
 	* @param string Shared target file path
-	* @return Returns CRUDS permissions granted or false if not found
+	* @return int CRUDS permissions granted or false if not found
 	*/
-	private function getPermissions($target) {
-		$file = $this->getFile($target);
-		if (isset($file['permissions'])) {
-			return $file['permissions'];
+	public function getPermissions($target) {
+		$source = $this->getFile($target);
+		if ($source) {
+			return $source['permissions'];
 		}
 		return false;
 	}
 
-	/**
-	* @brief Get the internal path to pass to the storage filesystem call
-	* @param string Source file path
-	* @return Source file path with mount point stripped out
-	*/
-	private function getInternalPath($path) {
-		$mountPoint = OC_Filesystem::getMountPoint($path);
-		$internalPath = substr($path, strlen($mountPoint));
-		return $internalPath;
-	}
-
-	public function getOwner($target) {
-		$shared_item = OCP\Share::getItemSharedWith('folder', $target, OC_Share_Backend_File::FORMAT_SHARED_STORAGE);
-		if ($shared_item) {
-			return $shared_item[0]["uid_owner"];
-		}
-		return null;
-	}
-
 	public function mkdir($path) {
 		if ($path == '' || $path == '/' || !$this->isCreatable(dirname($path))) {
 			return false;
 		} else if ($source = $this->getSourcePath($path)) {
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->mkdir($this->getInternalPath($source));
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->mkdir($internalPath);
 		}
 		return false;
 	}
 
 	public function rmdir($path) {
 		if (($source = $this->getSourcePath($path)) && $this->isDeletable($path)) {
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->rmdir($this->getInternalPath($source));
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->rmdir($internalPath);
 		}
 		return false;
 	}
 
 	public function opendir($path) {
 		if ($path == '' || $path == '/') {
-			$files = OCP\Share::getItemsSharedWith('file', OC_Share_Backend_Folder::FORMAT_OPENDIR);
-			OC_FakeDirStream::$dirs['shared'] = $files;
+			$files = \OCP\Share::getItemsSharedWith('file', \OC_Share_Backend_Folder::FORMAT_OPENDIR);
+			\OC\Files\Stream\Dir::register('shared', $files);
 			return opendir('fakedir://shared');
 		} else if ($source = $this->getSourcePath($path)) {
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->opendir($this->getInternalPath($source));
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->opendir($internalPath);
 		}
 		return false;
 	}
@@ -150,16 +115,16 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 		if ($path == '' || $path == '/') {
 			return true;
 		} else if ($source = $this->getSourcePath($path)) {
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->is_dir($this->getInternalPath($source));
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->is_dir($internalPath);
 		}
 		return false;
 	}
 
 	public function is_file($path) {
 		if ($source = $this->getSourcePath($path)) {
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->is_file($this->getInternalPath($source));
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->is_file($internalPath);
 		}
 		return false;
 	}
@@ -168,11 +133,10 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 		if ($path == '' || $path == '/') {
 			$stat['size'] = $this->filesize($path);
 			$stat['mtime'] = $this->filemtime($path);
-			$stat['ctime'] = $this->filectime($path);
 			return $stat;
 		} else if ($source = $this->getSourcePath($path)) {
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->stat($this->getInternalPath($source));
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->stat($internalPath);
 		}
 		return false;
 	}
@@ -181,8 +145,8 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 		if ($path == '' || $path == '/') {
 			return 'dir';
 		} else if ($source = $this->getSourcePath($path)) {
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->filetype($this->getInternalPath($source));
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->filetype($internalPath);
 		}
 		return false;
 	}
@@ -191,8 +155,8 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 		if ($path == '' || $path == '/' || $this->is_dir($path)) {
 			return 0;
 		} else if ($source = $this->getSourcePath($path)) {
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->filesize($this->getInternalPath($source));
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->filesize($internalPath);
 		}
 		return false;
 	}
@@ -201,7 +165,7 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 		if ($path == '') {
 			return false;
 		}
-		return ($this->getPermissions($path) & OCP\PERMISSION_CREATE);
+		return ($this->getPermissions($path) & \OCP\PERMISSION_CREATE);
 	}
 
 	public function isReadable($path) {
@@ -212,54 +176,33 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 		if ($path == '') {
 			return false;
 		}
-		return ($this->getPermissions($path) & OCP\PERMISSION_UPDATE);
+		return ($this->getPermissions($path) & \OCP\PERMISSION_UPDATE);
 	}
 
 	public function isDeletable($path) {
 		if ($path == '') {
 			return true;
 		}
-		return ($this->getPermissions($path) & OCP\PERMISSION_DELETE);
+		return ($this->getPermissions($path) & \OCP\PERMISSION_DELETE);
 	}
 
 	public function isSharable($path) {
 		if ($path == '') {
 			return false;
 		}
-		return ($this->getPermissions($path) & OCP\PERMISSION_SHARE);
+		return ($this->getPermissions($path) & \OCP\PERMISSION_SHARE);
 	}
 
 	public function file_exists($path) {
 		if ($path == '' || $path == '/') {
 			return true;
 		} else if ($source = $this->getSourcePath($path)) {
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->file_exists($this->getInternalPath($source));
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->file_exists($internalPath);
 		}
 		return false;
 	}
 
-	public function filectime($path) {
-		if ($path == '' || $path == '/') {
-			$ctime = 0;
-			if ($dh = $this->opendir($path)) {
-				while (($filename = readdir($dh)) !== false) {
-					$tempctime = $this->filectime($filename);
-					if ($tempctime < $ctime) {
-						$ctime = $tempctime;
-					}
-				}
-			}
-			return $ctime;
-		} else {
-			$source = $this->getSourcePath($path);
-			if ($source) {
-				$storage = OC_Filesystem::getStorage($source);
-				return $storage->filectime($this->getInternalPath($source));
-			}
-		}
-	}
-
 	public function filemtime($path) {
 		if ($path == '' || $path == '/') {
 			$mtime = 0;
@@ -275,8 +218,8 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 		} else {
 			$source = $this->getSourcePath($path);
 			if ($source) {
-				$storage = OC_Filesystem::getStorage($source);
-				return $storage->filemtime($this->getInternalPath($source));
+				list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+				return $storage->filemtime($internalPath);
 			}
 		}
 	}
@@ -288,9 +231,9 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 				'target' => $this->sharedFolder.$path,
 				'source' => $source,
 			);
-			OCP\Util::emitHook('OC_Filestorage_Shared', 'file_get_contents', $info);
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->file_get_contents($this->getInternalPath($source));
+			\OCP\Util::emitHook('\OC\Files\Storage\Shared', 'file_get_contents', $info);
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->file_get_contents($internalPath);
 		}
 	}
 
@@ -304,9 +247,9 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 					'target' => $this->sharedFolder.$path,
 					'source' => $source,
 				);
-			OCP\Util::emitHook('OC_Filestorage_Shared', 'file_put_contents', $info);
-			$storage = OC_Filesystem::getStorage($source);
-			$result = $storage->file_put_contents($this->getInternalPath($source), $data);
+			\OCP\Util::emitHook('\OC\Files\Storage\Shared', 'file_put_contents', $info);
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			$result = $storage->file_put_contents($internalPath, $data);
 			return $result;
 		}
 		return false;
@@ -316,8 +259,8 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 		// Delete the file if DELETE permission is granted
 		if ($source = $this->getSourcePath($path)) {
 			if ($this->isDeletable($path)) {
-				$storage = OC_Filesystem::getStorage($source);
-				return $storage->unlink($this->getInternalPath($source));
+				list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+				return $storage->unlink($internalPath);
 			} else if (dirname($path) == '/' || dirname($path) == '.') {
 				// Unshare the file from the user if in the root of the Shared folder
 				if ($this->is_dir($path)) {
@@ -325,7 +268,7 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 				} else {
 					$itemType = 'file';
 				}
-				return OCP\Share::unshareFromSelf($itemType, $path);
+				return \OCP\Share::unshareFromSelf($itemType, $path);
 			}
 		}
 		return false;
@@ -340,8 +283,9 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 			if (dirname($path1) == dirname($path2)) {
 				// Rename the file if UPDATE permission is granted
 				if ($this->isUpdatable($path1)) {
-					$storage = OC_Filesystem::getStorage($oldSource);
-					return $storage->rename($this->getInternalPath($oldSource), $this->getInternalPath($newSource));
+					list($storage, $oldInternalPath) = \OC\Files\Filesystem::resolvePath($oldSource);
+					list( , $newInternalPath) = \OC\Files\Filesystem::resolvePath($newSource);
+					return $storage->rename($oldInternalPath, $newInternalPath);
 				}
 			} else {
 				// Move the file if DELETE and CREATE permissions are granted
@@ -355,8 +299,9 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 							return $this->unlink($path1);
 						}
 					} else {
-						$storage = OC_Filesystem::getStorage($oldSource);
-						return $storage->rename($this->getInternalPath($oldSource), $this->getInternalPath($newSource));
+						list($storage, $oldInternalPath) = \OC\Files\Filesystem::resolvePath($oldSource);
+						list( , $newInternalPath) = \OC\Files\Filesystem::resolvePath($newSource);
+						return $storage->rename($oldInternalPath, $newInternalPath);
 					}
 				}
 			}
@@ -369,7 +314,7 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 		if ($this->isCreatable(dirname($path2))) {
 			$source = $this->fopen($path1, 'r');
 			$target = $this->fopen($path2, 'w');
-			return OC_Helper::streamCopy($source, $target);
+			return \OC_Helper::streamCopy($source, $target);
 		}
 		return false;
 	}
@@ -400,9 +345,9 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 				'source' => $source,
 				'mode' => $mode,
 			);
-			OCP\Util::emitHook('OC_Filestorage_Shared', 'fopen', $info);
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->fopen($this->getInternalPath($source), $mode);
+			\OCP\Util::emitHook('\OC\Files\Storage\Shared', 'fopen', $info);
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->fopen($internalPath, $mode);
 		}
 		return false;
 	}
@@ -412,47 +357,88 @@ class OC_Filestorage_Shared extends OC_Filestorage_Common {
 			return 'httpd/unix-directory';
 		}
 		if ($source = $this->getSourcePath($path)) {
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->getMimeType($this->getInternalPath($source));
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->getMimeType($internalPath);
 		}
 		return false;
 	}
 
 	public function free_space($path) {
+		if ($path == '') {
+			return -1;
+		}
 		$source = $this->getSourcePath($path);
 		if ($source) {
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->free_space($this->getInternalPath($source));
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->free_space($internalPath);
 		}
 	}
 
 	public function getLocalFile($path) {
 		if ($source = $this->getSourcePath($path)) {
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->getLocalFile($this->getInternalPath($source));
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->getLocalFile($internalPath);
 		}
 		return false;
 	}
 	public function touch($path, $mtime = null) {
 		if ($source = $this->getSourcePath($path)) {
-			$storage = OC_Filesystem::getStorage($source);
-			return $storage->touch($this->getInternalPath($source), $mtime);
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->touch($internalPath, $mtime);
 		}
 		return false;
 	}
 
 	public static function setup($options) {
-		$user_dir = $options['user_dir'];
-		OC_Filesystem::mount('OC_Filestorage_Shared', array('sharedFolder' => '/Shared'), $user_dir.'/Shared/');
+		if (\OCP\Share::getItemsSharedWith('file')) {
+			$user_dir = $options['user_dir'];
+			\OC\Files\Filesystem::mount('\OC\Files\Storage\Shared', array('sharedFolder' => '/Shared'), $user_dir.'/Shared/');
+		}
 	}
 
-	/**
-	 * check if a file or folder has been updated since $time
-	 * @param int $time
-	 * @return bool
-	 */
 	public function hasUpdated($path, $time) {
-		//TODO
+		if ($path == '') {
+			return false;
+		}
+		return $this->filemtime($path) > $time;
+	}
+
+	public function getCache($path = '') {
+		return new \OC\Files\Cache\Shared_Cache($this);
+	}
+
+	public function getScanner($path = '') {
+		return new \OC\Files\Cache\Scanner($this);
+	}
+
+	public function getPermissionsCache($path = '') {
+		return new \OC\Files\Cache\Shared_Permissions($this);
+	}
+
+	public function getWatcher($path = '') {
+		return new \OC\Files\Cache\Shared_Watcher($this);
+	}
+
+	public function getOwner($path) {
+		if ($path == '') {
+			return false;
+		}
+		$source = $this->getFile($path);
+		if ($source) {
+			return $source['uid_owner'];
+		}
 		return false;
 	}
+
+	public function getETag($path) {
+		if ($path == '') {
+			return parent::getETag($path);
+		}
+		if ($source = $this->getSourcePath($path)) {
+			list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
+			return $storage->getETag($internalPath);
+		}
+		return null;
+	}
+
 }
diff --git a/apps/files_sharing/lib/watcher.php b/apps/files_sharing/lib/watcher.php
new file mode 100644
index 00000000000..e67d1ee9086
--- /dev/null
+++ b/apps/files_sharing/lib/watcher.php
@@ -0,0 +1,51 @@
+<?php
+/**
+* ownCloud
+*
+* @author Michael Gapczynski
+* @copyright 2012 Michael Gapczynski mtgap@owncloud.com
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+* License as published by the Free Software Foundation; either
+* version 3 of the License, or any later version.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+*
+* You should have received a copy of the GNU Affero General Public
+* License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+namespace OC\Files\Cache;
+
+/**
+ * check the storage backends for updates and change the cache accordingly
+ */
+class Shared_Watcher extends Watcher {
+
+	/**
+	 * check $path for updates
+	 *
+	 * @param string $path
+	 */
+	public function checkUpdate($path) {
+		if ($path != '') {
+			parent::checkUpdate($path);
+		}
+	}
+
+	/**
+	 * remove deleted files in $path from the cache
+	 *
+	 * @param string $path
+	 */
+	public function cleanFolder($path) {
+		if ($path != '') {
+			parent::cleanFolder($path);
+		}
+	}
+
+}
\ No newline at end of file
diff --git a/apps/files_sharing/public.php b/apps/files_sharing/public.php
index 5672c78dc33..9cf45e56fb9 100644
--- a/apps/files_sharing/public.php
+++ b/apps/files_sharing/public.php
@@ -9,9 +9,10 @@ if (isset($_GET['token'])) {
 	unset($_GET['file']);
 	$qry = \OC_DB::prepare('SELECT `source` FROM `*PREFIX*sharing` WHERE `target` = ?', 1);
 	$filepath = $qry->execute(array($_GET['token']))->fetchOne();
-	if(isset($filepath)) {
-		$info = OC_FileCache_Cached::get($filepath, '');
-		if(strtolower($info['mimetype']) == 'httpd/unix-directory') {
+	if (isset($filepath)) {
+		$rootView = new \OC\Files\View('');
+		$info = $rootView->getFileInfo($filepath, '');
+		if (strtolower($info['mimetype']) == 'httpd/unix-directory') {
 			$_GET['dir'] = $filepath;
 		} else {
 			$_GET['file'] = $filepath;
@@ -25,7 +26,7 @@ if (isset($_GET['token'])) {
 function getID($path) {
 	// use the share table from the db to find the item source if the file was reshared because shared files
 	//are not stored in the file cache.
-	if (substr(OC_Filesystem::getMountPoint($path), -7, 6) == "Shared") {
+	if (substr(\OC\Files\Filesystem::getMountPoint($path), -7, 6) == "Shared") {
 		$path_parts = explode('/', $path, 5);
 		$user = $path_parts[1];
 		$intPath = '/'.$path_parts[4];
@@ -37,16 +38,19 @@ function getID($path) {
 		$row = $result->fetchRow();
 		$fileSource = $row['item_source'];
 	} else {
-		$fileSource = OC_Filecache::getId($path, '');
+		$rootView = new \OC\Files\View('');
+		$meta = $rootView->getFileInfo($path);
+		$fileSource = $meta['fileid'];
 	}
 
 	return $fileSource;
 }
+
 // Enf of backward compatibility
 
 /**
  * lookup file path and owner by fetching it from the fscache
- * needed becaus OC_FileCache::getPath($id, $user) already requires the user
+ * needed because OC_FileCache::getPath($id, $user) already requires the user
  * @param int $id
  * @return array
  */
@@ -86,41 +90,43 @@ if (isset($_GET['t'])) {
 			OC_Util::setupFS($fileOwner);
 		}
 	}
-} else if (isset($_GET['file']) || isset($_GET['dir'])) {
-	OCP\Util::writeLog('share', 'Missing token, trying fallback file/dir links', \OCP\Util::DEBUG);
-	if (isset($_GET['dir'])) {
-		$type = 'folder';
-		$path = $_GET['dir'];
-		if(strlen($path)>1 and substr($path, -1, 1)==='/') {
-			$path=substr($path, 0, -1);
-		}
-		$baseDir = $path;
-		$dir = $baseDir;
-	} else {
-		$type = 'file';
-		$path = $_GET['file'];
-		if(strlen($path)>1 and substr($path, -1, 1)==='/') {
-			$path=substr($path, 0, -1);
+} else {
+	if (isset($_GET['file']) || isset($_GET['dir'])) {
+		OCP\Util::writeLog('share', 'Missing token, trying fallback file/dir links', \OCP\Util::DEBUG);
+		if (isset($_GET['dir'])) {
+			$type = 'folder';
+			$path = $_GET['dir'];
+			if (strlen($path) > 1 and substr($path, -1, 1) === '/') {
+				$path = substr($path, 0, -1);
+			}
+			$baseDir = $path;
+			$dir = $baseDir;
+		} else {
+			$type = 'file';
+			$path = $_GET['file'];
+			if (strlen($path) > 1 and substr($path, -1, 1) === '/') {
+				$path = substr($path, 0, -1);
+			}
 		}
-	}
-	$shareOwner = substr($path, 1, strpos($path, '/', 1) - 1);
+		$shareOwner = substr($path, 1, strpos($path, '/', 1) - 1);
 
-	if (OCP\User::userExists($shareOwner)) {
-		OC_Util::setupFS($shareOwner);
-		$fileSource = getId($path);
-		if ($fileSource != -1 ) {
-			$linkItem = OCP\Share::getItemSharedWithByLink($type, $fileSource, $shareOwner);
-			$pathAndUser['path'] = $path;
-			$path_parts = explode('/', $path, 5);
-			$pathAndUser['user'] = $path_parts[1];
-			$fileOwner = $path_parts[1];
+		if (OCP\User::userExists($shareOwner)) {
+			OC_Util::setupFS($shareOwner);
+			$fileSource = getId($path);
+			if ($fileSource != -1) {
+				$linkItem = OCP\Share::getItemSharedWithByLink($type, $fileSource, $shareOwner);
+				$pathAndUser['path'] = $path;
+				$path_parts = explode('/', $path, 5);
+				$pathAndUser['user'] = $path_parts[1];
+				$fileOwner = $path_parts[1];
+			}
 		}
 	}
 }
 
 if ($linkItem) {
 	if (!isset($linkItem['item_type'])) {
-		OCP\Util::writeLog('share', 'No item type set for share id: '.$linkItem['id'], \OCP\Util::ERROR);
+		OCP\Util::writeLog('share', 'No item type set for share id: ' . $linkItem['id'], \OCP\Util::ERROR);
 		header('HTTP/1.0 404 Not Found');
 		$tmpl = new OCP\Template('', '404', 'guest');
 		$tmpl->printPage();
@@ -128,11 +134,13 @@ if ($linkItem) {
 	}
 	if (isset($linkItem['share_with'])) {
 		// Authenticate share_with
-		$url = OCP\Util::linkToPublic('files').'&t='.$token;
+		$url = OCP\Util::linkToPublic('files') . '&t=' . $token;
 		if (isset($_GET['file'])) {
-			$url .= '&file='.urlencode($_GET['file']);
-		} else if (isset($_GET['dir'])) {
-			$url .= '&dir='.urlencode($_GET['dir']);
+			$url .= '&file=' . urlencode($_GET['file']);
+		} else {
+			if (isset($_GET['dir'])) {
+				$url .= '&dir=' . urlencode($_GET['dir']);
+			}
 		}
 		if (isset($_POST['password'])) {
 			$password = $_POST['password'];
@@ -173,13 +181,13 @@ if ($linkItem) {
 			}
 		}
 	}
-	$basePath = substr($pathAndUser['path'], strlen('/'.$fileOwner.'/files'));
+	$basePath = substr($pathAndUser['path'], strlen('/' . $fileOwner . '/files'));
 	$path = $basePath;
 	if (isset($_GET['path'])) {
 		$path .= $_GET['path'];
 	}
-	if (!$path || !OC_Filesystem::isValidPath($path) || !OC_Filesystem::file_exists($path)) {
-		OCP\Util::writeLog('share', 'Invalid path '.$path.' for share id '.$linkItem['id'], \OCP\Util::ERROR);
+	if (!$path || !\OC\Files\Filesystem::isValidPath($path) || !\OC\Files\Filesystem::file_exists($path)) {
+		OCP\Util::writeLog('share', 'Invalid path ' . $path . ' for share id ' . $linkItem['id'], \OCP\Util::ERROR);
 		header('HTTP/1.0 404 Not Found');
 		$tmpl = new OCP\Template('', '404', 'guest');
 		$tmpl->printPage();
@@ -189,13 +197,15 @@ if ($linkItem) {
 	$file = basename($path);
 	// Download the file
 	if (isset($_GET['download'])) {
-		if (isset($_GET['path']) && $_GET['path'] !== '' ) {
-			if ( isset($_GET['files']) ) { // download selected files
+		if (isset($_GET['path']) && $_GET['path'] !== '') {
+			if (isset($_GET['files'])) { // download selected files
 				OC_Files::get($path, $_GET['files'], $_SERVER['REQUEST_METHOD'] == 'HEAD' ? true : false);
-			} else if (isset($_GET['path']) && $_GET['path'] != '' ) { // download a file from a shared directory
-				OC_Files::get($dir, $file, $_SERVER['REQUEST_METHOD'] == 'HEAD' ? true : false);
-			} else { // download the whole shared directory
-				OC_Files::get($dir, $file, $_SERVER['REQUEST_METHOD'] == 'HEAD' ? true : false);
+			} else {
+				if (isset($_GET['path']) && $_GET['path'] != '') { // download a file from a shared directory
+					OC_Files::get($dir, $file, $_SERVER['REQUEST_METHOD'] == 'HEAD' ? true : false);
+				} else { // download the whole shared directory
+					OC_Files::get($dir, $file, $_SERVER['REQUEST_METHOD'] == 'HEAD' ? true : false);
+				}
 			}
 		} else { // download a single shared file
 			OC_Files::get($dir, $file, $_SERVER['REQUEST_METHOD'] == 'HEAD' ? true : false);
@@ -210,7 +220,7 @@ if ($linkItem) {
 		$tmpl->assign('displayName', \OCP\User::getDisplayName($shareOwner));
 		$tmpl->assign('dir', $dir);
 		$tmpl->assign('filename', $file);
-		$tmpl->assign('mimetype', OC_Filesystem::getMimeType($path));
+		$tmpl->assign('mimetype', \OC\Files\Filesystem::getMimeType($path));
 		if (isset($_GET['path'])) {
 			$getPath = $_GET['path'];
 		} else {
@@ -221,7 +231,7 @@ if ($linkItem) {
 							.(isset($_GET['dir'])?'&dir='.$_GET['dir']:'')
 							.(isset($_GET['file'])?'&file='.$_GET['file']:'');
 		// Show file list
-		if (OC_Filesystem::is_dir($path)) {
+		if (\OC\Files\Filesystem::is_dir($path)) {
 			OCP\Util::addStyle('files', 'files');
 			OCP\Util::addScript('files', 'files');
 			OCP\Util::addScript('files', 'filelist');
@@ -232,9 +242,9 @@ if ($linkItem) {
 				if ($i['type'] == 'file') {
 					$fileinfo = pathinfo($i['name']);
 					$i['basename'] = $fileinfo['filename'];
-					$i['extension'] = isset($fileinfo['extension']) ? ('.'.$fileinfo['extension']) : '';
+					$i['extension'] = isset($fileinfo['extension']) ? ('.' . $fileinfo['extension']) : '';
 				}
-				$i['directory'] = '/'.substr($i['directory'], $rootLength);
+				$i['directory'] = '/' . substr($i['directory'], $rootLength);
 				if ($i['directory'] == '/') {
 					$i['directory'] = '';
 				}
@@ -251,9 +261,137 @@ if ($linkItem) {
 			//add subdir breadcrumbs
 			foreach (explode('/', urldecode($getPath)) as $i) {
 				if ($i != '') {
-					$pathtohere .= '/'.$i;
+					$pathtohere .= '/' . $i;
 					$breadcrumb[] = array('dir' => $pathtohere, 'name' => $i);
+					$path = $linkItem['path'];
+					if (isset($_GET['path'])) {
+						$path .= $_GET['path'];
+						$dir .= $_GET['path'];
+						if (!\OC\Files\Filesystem::file_exists($path)) {
+							header('HTTP/1.0 404 Not Found');
+							$tmpl = new OCP\Template('', '404', 'guest');
+							$tmpl->printPage();
+							exit();
+						}
+					}
+
+					$list = new OCP\Template('files', 'part.list', '');
+					$list->assign('files', $files, false);
+					$list->assign('publicListView', true);
+					$list->assign('baseURL', OCP\Util::linkToPublic('files') . $urlLinkIdentifiers . '&path=', false);
+					$list->assign('downloadURL', OCP\Util::linkToPublic('files') . $urlLinkIdentifiers . '&download&path=', false);
+					$breadcrumbNav = new OCP\Template('files', 'part.breadcrumb', '');
+					$breadcrumbNav->assign('breadcrumb', $breadcrumb, false);
+					$breadcrumbNav->assign('baseURL', OCP\Util::linkToPublic('files') . $urlLinkIdentifiers . '&path=', false);
+					$folder = new OCP\Template('files', 'index', '');
+					$folder->assign('fileList', $list->fetchPage(), false);
+					$folder->assign('breadcrumb', $breadcrumbNav->fetchPage(), false);
+					$folder->assign('isCreatable', false);
+					$folder->assign('permissions', 0);
+					$folder->assign('files', $files);
+					$folder->assign('uploadMaxFilesize', 0);
+					$folder->assign('uploadMaxHumanFilesize', 0);
+					$folder->assign('allowZipDownload', intval(OCP\Config::getSystemValue('allowZipDownload', true)));
+					$tmpl->assign('folder', $folder->fetchPage(), false);
+					$tmpl->assign('allowZipDownload', intval(OCP\Config::getSystemValue('allowZipDownload', true)));
+					$tmpl->assign('downloadURL', OCP\Util::linkToPublic('files') . $urlLinkIdentifiers . '&download&path=' . urlencode($getPath));
+				} else {
+					// Show file preview if viewer is available
+					if ($type == 'file') {
+						$tmpl->assign('downloadURL', OCP\Util::linkToPublic('files') . $urlLinkIdentifiers . '&download');
+					} else {
+						OCP\Util::addStyle('files_sharing', 'public');
+						OCP\Util::addScript('files_sharing', 'public');
+						OCP\Util::addScript('files', 'fileactions');
+						$tmpl = new OCP\Template('files_sharing', 'public', 'base');
+						$tmpl->assign('owner', $uidOwner);
+						// Show file list
+						if (\OC\Files\Filesystem::is_dir($path)) {
+							OCP\Util::addStyle('files', 'files');
+							OCP\Util::addScript('files', 'files');
+							OCP\Util::addScript('files', 'filelist');
+							$files = array();
+							$rootLength = strlen($baseDir) + 1;
+							foreach (OC_Files::getDirectoryContent($path) as $i) {
+								$i['date'] = OCP\Util::formatDate($i['mtime']);
+								if ($i['type'] == 'file') {
+									$fileinfo = pathinfo($i['name']);
+									$i['basename'] = $fileinfo['filename'];
+									$i['extension'] = isset($fileinfo['extension']) ? ('.' . $fileinfo['extension']) : '';
+								}
+								$i['directory'] = '/' . substr('/' . $uidOwner . '/files' . $i['directory'], $rootLength);
+								if ($i['directory'] == '/') {
+									$i['directory'] = '';
+								}
+								$i['permissions'] = OCP\PERMISSION_READ;
+								$files[] = $i;
+							}
+							// Make breadcrumb
+							$breadcrumb = array();
+							$pathtohere = '';
+							$count = 1;
+							foreach (explode('/', $dir) as $i) {
+								if ($i != '') {
+									if ($i != $baseDir) {
+										$pathtohere .= '/' . $i;
+									}
+									if (strlen($pathtohere) < strlen($_GET['dir'])) {
+										continue;
+									}
+									$breadcrumb[] = array('dir' => str_replace($_GET['dir'], "", $pathtohere, $count), 'name' => $i);
+								}
+							}
+							$list = new OCP\Template('files', 'part.list', '');
+							$list->assign('files', $files, false);
+							$list->assign('publicListView', true);
+							$list->assign('baseURL', OCP\Util::linkToPublic('files') . '&dir=' . urlencode($_GET['dir']) . '&path=', false);
+							$list->assign('downloadURL', OCP\Util::linkToPublic('files') . '&download&dir=' . urlencode($_GET['dir']) . '&path=', false);
+							$breadcrumbNav = new OCP\Template('files', 'part.breadcrumb', '');
+							$breadcrumbNav->assign('breadcrumb', $breadcrumb, false);
+							$breadcrumbNav->assign('baseURL', OCP\Util::linkToPublic('files') . '&dir=' . urlencode($_GET['dir']) . '&path=', false);
+							$folder = new OCP\Template('files', 'index', '');
+							$folder->assign('fileList', $list->fetchPage(), false);
+							$folder->assign('breadcrumb', $breadcrumbNav->fetchPage(), false);
+							$folder->assign('dir', basename($dir));
+							$folder->assign('isCreatable', false);
+							$folder->assign('permissions', 0);
+							$folder->assign('files', $files);
+							$folder->assign('uploadMaxFilesize', 0);
+							$folder->assign('uploadMaxHumanFilesize', 0);
+							$folder->assign('allowZipDownload', intval(OCP\Config::getSystemValue('allowZipDownload', true)));
+							$tmpl->assign('folder', $folder->fetchPage(), false);
+							$tmpl->assign('uidOwner', $uidOwner);
+							$tmpl->assign('dir', basename($dir));
+							$tmpl->assign('filename', basename($path));
+							$tmpl->assign('mimetype', \OC\Files\Filesystem::getMimeType($path));
+							$tmpl->assign('allowZipDownload', intval(OCP\Config::getSystemValue('allowZipDownload', true)));
+							if (isset($_GET['path'])) {
+								$getPath = $_GET['path'];
+							} else {
+								$getPath = '';
+							}
+							$tmpl->assign('downloadURL', OCP\Util::linkToPublic('files') . '&download&dir=' . urlencode($_GET['dir']) . '&path=' . urlencode($getPath), false);
+						} else {
+							// Show file preview if viewer is available
+							$tmpl->assign('uidOwner', $uidOwner);
+							$tmpl->assign('dir', dirname($path));
+							$tmpl->assign('filename', basename($path));
+							$tmpl->assign('mimetype', \OC\Files\Filesystem::getMimeType($path));
+							if ($type == 'file') {
+								$tmpl->assign('downloadURL', OCP\Util::linkToPublic('files') . '&file=' . urlencode($_GET['file']) . '&download', false);
+							} else {
+								if (isset($_GET['path'])) {
+									$getPath = $_GET['path'];
+								} else {
+									$getPath = '';
+								}
+								$tmpl->assign('downloadURL', OCP\Util::linkToPublic('files') . '&download&dir=' . urlencode($_GET['dir']) . '&path=' . urlencode($getPath), false);
+							}
+						}
+						$tmpl->printPage();
+					}
 				}
+				$tmpl->printPage();
 			}
 
 			$list = new OCP\Template('files', 'part.list', '');
@@ -279,21 +417,11 @@ if ($linkItem) {
 			$tmpl->assign('downloadURL', OCP\Util::linkToPublic('files')
 										.$urlLinkIdentifiers.'&download&path='.urlencode($getPath));
 		} else {
-			// Show file preview if viewer is available
-			if ($type == 'file') {
-				$tmpl->assign('downloadURL', OCP\Util::linkToPublic('files')
-											.$urlLinkIdentifiers.'&download');
-			} else {
-				$tmpl->assign('downloadURL', OCP\Util::linkToPublic('files')
-											.$urlLinkIdentifiers.'&download&path='.urlencode($getPath));
-			}
+			OCP\Util::writeLog('share', 'could not resolve linkItem', \OCP\Util::DEBUG);
 		}
-		$tmpl->printPage();
 	}
-	exit();
-} else {
-	OCP\Util::writeLog('share', 'could not resolve linkItem', \OCP\Util::DEBUG);
 }
 header('HTTP/1.0 404 Not Found');
 $tmpl = new OCP\Template('', '404', 'guest');
 $tmpl->printPage();
+
diff --git a/apps/files_versions/appinfo/info.xml b/apps/files_versions/appinfo/info.xml
index e4e5a365d51..0155f8e830f 100644
--- a/apps/files_versions/appinfo/info.xml
+++ b/apps/files_versions/appinfo/info.xml
@@ -4,7 +4,7 @@
 	<name>Versions</name>
 	<licence>AGPL</licence>
 	<author>Frank Karlitschek</author>
-	<require>4.9</require>
+	<require>4.91</require>
 	<shipped>true</shipped>
 	<description>Versioning of files</description>
 	<types>
diff --git a/apps/files_versions/lib/hooks.php b/apps/files_versions/lib/hooks.php
index 5fb9dc3c3c5..5cefc532895 100644
--- a/apps/files_versions/lib/hooks.php
+++ b/apps/files_versions/lib/hooks.php
@@ -21,9 +21,9 @@ class Hooks {
 
 		if(\OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED)=='true') {
 
-			$versions = new Storage( new \OC_FilesystemView('') );
+			$versions = new Storage( new \OC\Files\View('') );
 
-			$path = $params[\OC_Filesystem::signal_param_path];
+			$path = $params[\OC\Files\Filesystem::signal_param_path];
 
 			if($path<>'') $versions->store( $path );
 
@@ -39,15 +39,15 @@ class Hooks {
 	 * cleanup the versions directory if the actual file gets deleted
 	 */
 	public static function remove_hook($params) {
-		if(\OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED)=='true') {

-		

-			$versions = new Storage( new \OC_FilesystemView('') );

-		

-			$path = $params[\OC_Filesystem::signal_param_path];

-		

-			if($path<>'') $versions->delete( $path );

-		

-		}

+		if(\OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED)=='true') {
+		
+			$versions = new Storage( new \OC_FilesystemView('') );
+		
+			$path = $params[\OC\Files\Filesystem::signal_param_path];
+		
+			if($path<>'') $versions->delete( $path );
+		
+		}
 	}
 
 	/**
@@ -58,15 +58,15 @@ class Hooks {
 	 * of the stored versions along the actual file
 	 */
 	public static function rename_hook($params) {
-		if(\OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED)=='true') {

-		

-			$versions = new Storage( new \OC_FilesystemView('') );

-		

+		if(\OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED)=='true') {
+		
+			$versions = new Storage( new \OC_FilesystemView('') );
+		
 			$oldpath = $params['oldpath'];
-			$newpath = $params['newpath'];

-		

-			if($oldpath<>'' && $newpath<>'') $versions->rename( $oldpath, $newpath );

-		

+			$newpath = $params['newpath'];
+		
+			if($oldpath<>'' && $newpath<>'') $versions->rename( $oldpath, $newpath );
+		
 		}
 	}
 	
diff --git a/apps/files_versions/lib/versions.php b/apps/files_versions/lib/versions.php
index 48be5e223ac..003d548d2b2 100644
--- a/apps/files_versions/lib/versions.php
+++ b/apps/files_versions/lib/versions.php
@@ -23,15 +23,15 @@ class Storage {
 	private static $max_versions_per_interval = array(
 														1 => array('intervalEndsAfter' => 10,     //first 10sec, one version every 2sec
 																	'step' => 2),
-														2 => array('intervalEndsAfter' => 60,     //next minute, one version every 10sec

+														2 => array('intervalEndsAfter' => 60,     //next minute, one version every 10sec
 																	'step' => 10),
 														3 => array('intervalEndsAfter' => 3600,     //next hour, one version every minute
 																	'step' => 60),
 														4 => array('intervalEndsAfter' => 86400,   //next 24h, one version every hour
 																	'step' => 3600),
-														5 => array('intervalEndsAfter' => 2592000,   //next 30days, one version per day

+														5 => array('intervalEndsAfter' => 2592000,   //next 30days, one version per day
 																	'step' => 86400),
-														6 => array('intervalEndsAfter' => -1,      //until the end one version per week

+														6 => array('intervalEndsAfter' => -1,      //until the end one version per week
 																	'step' => 604800),
 			);	
 
@@ -58,8 +58,8 @@ class Storage {
 	public function store($filename) {
 		if(\OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED)=='true') {
 			list($uid, $filename) = self::getUidAndFilename($filename);
-			$files_view = new \OC_FilesystemView('/'.$uid .'/files');
-			$users_view = new \OC_FilesystemView('/'.$uid);
+			$files_view = new \OC\Files\View('/'.\OCP\User::getUser() .'/files');
+			$users_view = new \OC\Files\View('/'.\OCP\User::getUser());
 
 			//check if source file already exist as version to avoid recursions.
 			// todo does this check work?
@@ -86,8 +86,8 @@ class Storage {
 
 			// store a new version of a file
 			$result = $users_view->copy('files'.$filename, 'files_versions'.$filename.'.v'.$users_view->filemtime('files'.$filename));
-			if (  ($versionsSize = \OCP\Config::getAppValue('files_versions', 'size')) === null ) {

-				$versionsSize = self::calculateSize($uid);

+			if (  ($versionsSize = \OCP\Config::getAppValue('files_versions', 'size')) === null ) {
+				$versionsSize = self::calculateSize($uid);
 			}
 			$versionsSize += $users_view->filesize('files'.$filename);
 			
@@ -105,42 +105,42 @@ class Storage {
 	 * Delete versions of a file
 	 */
 	public static function delete($filename) {
-		list($uid, $filename) = self::getUidAndFilename($filename);

+		list($uid, $filename) = self::getUidAndFilename($filename);
 		$versions_fileview = new \OC_FilesystemView('/'.$uid .'/files_versions');
-		

-		$abs_path = \OCP\Config::getSystemValue('datadirectory').$versions_fileview->getAbsolutePath('').$filename.'.v';

-		if( ($versions = self::getVersions($filename)) ) {

-			if (  ($versionsSize = \OCP\Config::getAppValue('files_versions', 'size')) === null ) {

-				$versionsSize = self::calculateSize($uid);

-			}

-			foreach ($versions as $v) {

-				unlink($abs_path . $v['version']);

-				$versionsSize -= $v['size'];

-			}

-			\OCP\Config::setAppValue('files_versions', 'size', $versionsSize);

+		
+		$abs_path = \OCP\Config::getSystemValue('datadirectory').$versions_fileview->getAbsolutePath('').$filename.'.v';
+		if( ($versions = self::getVersions($filename)) ) {
+			if (  ($versionsSize = \OCP\Config::getAppValue('files_versions', 'size')) === null ) {
+				$versionsSize = self::calculateSize($uid);
+			}
+			foreach ($versions as $v) {
+				unlink($abs_path . $v['version']);
+				$versionsSize -= $v['size'];
+			}
+			\OCP\Config::setAppValue('files_versions', 'size', $versionsSize);
 		}
 	}
 	
-	/**

-	 * rename versions of a file

-	 */

-	public static function rename($oldpath, $newpath) {

+	/**
+	 * rename versions of a file
+	 */
+	public static function rename($oldpath, $newpath) {
 		list($uid, $oldpath) = self::getUidAndFilename($oldpath);
-		list($uidn, $newpath) = self::getUidAndFilename($newpath);

+		list($uidn, $newpath) = self::getUidAndFilename($newpath);
 		$versions_view = new \OC_FilesystemView('/'.$uid .'/files_versions');
 		$files_view = new \OC_FilesystemView('/'.$uid .'/files');
-		$abs_newpath = \OCP\Config::getSystemValue('datadirectory').$versions_view->getAbsolutePath('').$newpath;

-		

+		$abs_newpath = \OCP\Config::getSystemValue('datadirectory').$versions_view->getAbsolutePath('').$newpath;
+		
 		if ( $files_view->is_dir($oldpath) && $versions_view->is_dir($oldpath) ) {
 			$versions_view->rename($oldpath, $newpath);
-		} else 	if ( ($versions = Storage::getVersions($oldpath)) ) {

-			$info=pathinfo($abs_newpath);

-			if(!file_exists($info['dirname'])) mkdir($info['dirname'], 0750, true);

-			$versions = Storage::getVersions($oldpath);

+		} else 	if ( ($versions = Storage::getVersions($oldpath)) ) {
+			$info=pathinfo($abs_newpath);
+			if(!file_exists($info['dirname'])) mkdir($info['dirname'], 0750, true);
+			$versions = Storage::getVersions($oldpath);
 			foreach ($versions as $v) {
-				$versions_view->rename($oldpath.'.v'.$v['version'], $newpath.'.v'.$v['version']);

-			}

-		}

+				$versions_view->rename($oldpath.'.v'.$v['version'], $newpath.'.v'.$v['version']);
+			}
+		}
 	}
 	
 	/**
@@ -150,7 +150,7 @@ class Storage {
 
 		if(\OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED)=='true') {
 			list($uid, $filename) = self::getUidAndFilename($filename);
-			$users_view = new \OC_FilesystemView('/'.$uid);
+			$users_view = new \OC\Files\View('/'.$uid);
 			$versionCreated = false;
 			
 			//first create a new version
@@ -184,7 +184,7 @@ class Storage {
 	public static function getVersions( $filename, $count = 0 ) {
 		if( \OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED)=='true' ) {
 			list($uid, $filename) = self::getUidAndFilename($filename);
-			$versions_fileview = new \OC_FilesystemView('/'.$uid.'/files_versions');
+			$versions_fileview = new \OC\Files\View('/' . \OCP\User::getUser() . '/files_versions');
 
 			$versionsName = \OCP\Config::getSystemValue('datadirectory').$versions_fileview->getAbsolutePath($filename);
 			$versions = array();
@@ -202,7 +202,7 @@ class Storage {
 				$key = $version.'#'.$filename;
 				$versions[$key]['cur'] = 0;
 				$versions[$key]['version'] = $version;
-				$versions[$key]['path'] = $filename;

+				$versions[$key]['path'] = $filename;
 				$versions[$key]['size'] = $versions_fileview->filesize($filename.'.v'.$version);
 
 				// if file with modified date exists, flag it in array as currently enabled version
@@ -236,29 +236,29 @@ class Storage {
 
 	}
 
-	/**

-	 * @brief get the size of all stored versions from a given user

-	 * @param $uid id from the user

-	 * @return size of vesions

-	 */

-	private static function calculateSize($uid) {

-		if( \OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED)=='true' ) {

-			$versions_fileview = new \OC_FilesystemView('/'.$uid.'/files_versions');

-			$versionsRoot = \OCP\Config::getSystemValue('datadirectory').$versions_fileview->getAbsolutePath('');

-				

-			$iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($versionsRoot), \RecursiveIteratorIterator::CHILD_FIRST);

-				

+	/**
+	 * @brief get the size of all stored versions from a given user
+	 * @param $uid id from the user
+	 * @return size of vesions
+	 */
+	private static function calculateSize($uid) {
+		if( \OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED)=='true' ) {
+			$versions_fileview = new \OC_FilesystemView('/'.$uid.'/files_versions');
+			$versionsRoot = \OCP\Config::getSystemValue('datadirectory').$versions_fileview->getAbsolutePath('');
+				
+			$iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($versionsRoot), \RecursiveIteratorIterator::CHILD_FIRST);
+				
 			$size = 0;
-							

-			foreach ($iterator as $path) {

-				if ( preg_match('/^.+\.v(\d+)$/', $path, $match) ) {

+							
+			foreach ($iterator as $path) {
+				if ( preg_match('/^.+\.v(\d+)$/', $path, $match) ) {
 					$relpath = substr($path, strlen($versionsRoot)-1);
-					$size += $versions_fileview->filesize($relpath);

-				}

+					$size += $versions_fileview->filesize($relpath);
+				}
 			}
 			
-			return $size;

-		}

+			return $size;
+		}
 	}
 	
 	/**
@@ -267,11 +267,11 @@ class Storage {
 	 * @return array with contains two arrays 'all' which contains all versions sorted by age and 'by_file' which contains all versions sorted by filename
 	 */
 	private static function getAllVersions($uid) {
-		if( \OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED)=='true' ) {

+		if( \OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED)=='true' ) {
 			$versions_fileview = new \OC_FilesystemView('/'.$uid.'/files_versions');
 			$versionsRoot = \OCP\Config::getSystemValue('datadirectory').$versions_fileview->getAbsolutePath('');
 			
-			$iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($versionsRoot), \RecursiveIteratorIterator::CHILD_FIRST);

+			$iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($versionsRoot), \RecursiveIteratorIterator::CHILD_FIRST);
 			
 			$versions = array();
 			
@@ -280,7 +280,7 @@ class Storage {
 					$relpath = substr($path, strlen($versionsRoot)-1);
 					$versions[$match[1].'#'.$relpath] = array('path' => $relpath, 'timestamp' => $match[1]);
 				}
-			}

+			}
 			
 			ksort($versions);
 			
@@ -288,20 +288,20 @@ class Storage {
 			
 			$result = array();
 			
-			foreach( $versions as $key => $value ) {

+			foreach( $versions as $key => $value ) {
 				$i++;
 				$size = $versions_fileview->filesize($value['path']);
 				$filename = substr($value['path'], 0, -strlen($value['timestamp'])-2);
-

+
 				$result['all'][$key]['version'] = $value['timestamp'];
-				$result['all'][$key]['path'] = $filename;

+				$result['all'][$key]['path'] = $filename;
 				$result['all'][$key]['size'] = $size;
 				
 				$filename = substr($value['path'], 0, -strlen($value['timestamp'])-2);
 				$result['by_file'][$filename][$key]['version'] = $value['timestamp'];
-				$result['by_file'][$filename][$key]['path'] = $filename;

+				$result['by_file'][$filename][$key]['path'] = $filename;
 				$result['by_file'][$filename][$key]['size'] = $size;
-				

+				
 			}
 			
 			return $result;
@@ -322,7 +322,7 @@ class Storage {
 				$quota = \OCP\Util::computerFileSize(\OC_Appconfig::getValue('files', 'default_quota'));
 			}
 			if ( $quota == null ) {
-				$quota = \OC_Filesystem::free_space('/');
+				$quota = \OC\Files\Filesystem::free_space('/');
 			}
 			
 			// make sure that we have the current size of the version history
@@ -332,7 +332,7 @@ class Storage {
 				}
 			}
 
-			// calculate available space for version history

+			// calculate available space for version history
 			$rootInfo = \OC_FileCache::get('', '/'. $uid . '/files');
 			$free = $quota-$rootInfo['size']; // remaining free space for user
 			if ( $free > 0 ) {
@@ -394,7 +394,7 @@ class Storage {
 							$nextVersion = $prevTimestamp - $step;
 							if ( Storage::$max_versions_per_interval[$interval]['intervalEndsAfter'] == -1 ) {
 								$nextInterval = -1;
-							} else {

+							} else {
 								$nextInterval = $time - Storage::$max_versions_per_interval[$interval]['intervalEndsAfter'];
 							}
 							$newInterval = true; // we changed the interval -> check same version with new interval
diff --git a/apps/user_ldap/appinfo/info.xml b/apps/user_ldap/appinfo/info.xml
index a7605775274..53269edfb34 100644
--- a/apps/user_ldap/appinfo/info.xml
+++ b/apps/user_ldap/appinfo/info.xml
@@ -7,7 +7,7 @@
 	This app is not compatible to the WebDAV user backend.</description>
 	<licence>AGPL</licence>
 	<author>Dominik Schmidt and Arthur Schiwon</author>
-	<require>4.9</require>
+	<require>4.91</require>
 	<shipped>true</shipped>
 	<types>
 		<authentication/>
diff --git a/apps/user_webdavauth/appinfo/info.xml b/apps/user_webdavauth/appinfo/info.xml
index e51f2e9ec4f..f62f03577e8 100755
--- a/apps/user_webdavauth/appinfo/info.xml
+++ b/apps/user_webdavauth/appinfo/info.xml
@@ -7,7 +7,7 @@
 	This app is not compatible to the LDAP user and group backend.</description>
 	<licence>AGPL</licence>
 	<author>Frank Karlitschek</author>
-	<require>4.9</require>
+	<require>4.91</require>
 	<shipped>true</shipped>
 	<types>
 		<authentication/>