webdav quota now displays the same values as the web interface does

lib/connector/sabre/directory.php

@@ -233,10 +233,10 @@ class OC_Connector_Sabre_Directory extends OC_Connector_Sabre_Node implements Sa
 	 * @return array
 	 */
 	public function getQuotaInfo() {
-		$rootInfo=\OC\Files\Filesystem::getFileInfo('');
+		$storageInfo = OC_Helper::getStorageInfo($this->path);
 		return array(
-			$rootInfo['size'],
-			\OC\Files\Filesystem::free_space()
+			$storageInfo['used'],
+			$storageInfo['total']
 		);
 
 	}

lib/helper.php

@@ -843,13 +843,13 @@ class OC_Helper {
 	/**
 	 * Calculate the disc space
 	 */
-	public static function getStorageInfo() {
-		$rootInfo = \OC\Files\Filesystem::getFileInfo('/');
+	public static function getStorageInfo($path = '/') {
+		$rootInfo = \OC\Files\Filesystem::getFileInfo($path);
 		$used = $rootInfo['size'];
 		if ($used < 0) {
 			$used = 0;
 		}
-		$free = \OC\Files\Filesystem::free_space();
+		$free = \OC\Files\Filesystem::free_space($path);
 		if ($free >= 0) {
 			$total = $free + $used;
 		} else {