Merge pull request #226 from nextcloud/allow_root_file_rename

Properly construct path of root on file rename

Author: nickvergessen

lib/FilesHooks.php

@@ -617,7 +617,12 @@ protected function getUserPathsFromPath($path, $uidOwner) {
 
 		$path = $node->getPath();
 		$sections = explode('/', $path, 4);
-		$accessList['ownerPath'] = '/' . $sections[3];
+
+		$accessList['ownerPath'] = '/';
+		if (isset($sections[3])) {
+			// Not the case when a file in root is renamed
+			$accessList['ownerPath'] .= $sections[3];
+		}
 
 		return $accessList;
 	}