handle locked exceptions when getting file/directory info in sabre

lib/private/connector/sabre/directory.php

@@ -30,6 +30,7 @@ namespace OC\Connector\Sabre;
 use OC\Connector\Sabre\Exception\InvalidPath;
 use OC\Connector\Sabre\Exception\FileLocked;
 use OCP\Lock\LockedException;
+use Sabre\DAV\Exception\Locked;
 
 class Directory extends \OC\Connector\Sabre\Node
 	implements \Sabre\DAV\ICollection, \Sabre\DAV\IQuota {
@@ -191,7 +192,11 @@ class Directory extends \OC\Connector\Sabre\Node
 		if (!is_null($this->dirContent)) {
 			return $this->dirContent;
 		}
+		try {
 			$folderContent = $this->fileView->getDirectoryContent($this->path);
+		} catch (LockedException $e) {
+			throw new Locked();
+		}
 
 		$nodes = array();
 		foreach ($folderContent as $info) {

lib/private/connector/sabre/objecttree.php

@@ -150,6 +150,8 @@ class ObjectTree extends \Sabre\DAV\Tree {
 				throw new \Sabre\DAV\Exception\ServiceUnavailable('Storage not available');
 			} catch (StorageInvalidException $e) {
 				throw new \Sabre\DAV\Exception\NotFound('Storage ' . $path . ' is invalid');
+			} catch (LockedException $e) {
+				throw new \Sabre\DAV\Exception\Locked();
 			}
 		}