LRN: make disk iterator start return GNUNET_SYSERR if run on empty directory

1 files changed, 3 insertions, 1 deletions

diff --git a/src/include/gnunet_disk_lib.h b/src/include/gnunet_disk_lib.h
index 19c1328bd..fc2f01704 100644
--- a/src/include/gnunet_disk_lib.h
+++ b/src/include/gnunet_disk_lib.h
@@ -565,8 +565,10 @@ GNUNET_DISK_directory_iterator_next (struct GNUNET_DISK_DirectoryIterator *iter,
  * @param dirName the name of the directory
  * @param callback the method to call for each file
  * @param callback_cls closure for callback
+ * @return GNUNET_YES if directory is not empty and @callback
+ *         will be called later, GNUNET_NO otherwise, GNUNET_SYSERR on error.
  */
-void
+int
 GNUNET_DISK_directory_iterator_start (enum GNUNET_SCHEDULER_Priority prio,
                                       const char *dirName,
                                       GNUNET_DISK_DirectoryIteratorCallback