[PATCH 1/9] tmp_objdir: add a helper function for discarding all contained objects

@@ -79,6 +79,11 @@ static void remove_tmp_objdir_on_signal(int signo)
 	raise(signo);
 }
 
+void tmp_objdir_discard_objects(struct tmp_objdir *t)
+{
+	remove_dir_recursively(&t->path, REMOVE_DIR_KEEP_TOPLEVEL);
+}
+
 /*
  * These env_* functions are for setting up the child environment; the
  * "replace" variant overrides the value of any existing variable with that

@@ -46,6 +46,12 @@ int tmp_objdir_migrate(struct tmp_objdir *);
  */
 int tmp_objdir_destroy(struct tmp_objdir *);
 
+/*
+ * Remove all objects from the temporary object directory, while leaving it
+ * around so more objects can be added.
+ */
+void tmp_objdir_discard_objects(struct tmp_objdir *);
+
 /*
  * Add the temporary object directory as an alternate object store in the
  * current process.