functions invoked on all linked list items now support up to five additional arguments

src/libstrongswan/utils/linked_list.h

@@ -45,6 +45,14 @@ typedef struct linked_list_t linked_list_t;
  */
 typedef bool (*linked_list_match_t)(void *item, ...);
 
+/**
+ * Method to be invoked on elements in a linked list (used in invoke_* functions)
+ *
+ * @param item			current list item
+ * @param ...			user supplied data (only pointers, at most 5)
+ */
+typedef void (*linked_list_invoke_t)(void *item, ...);
+
 /**
  * Class implementing a double linked list.
  *
@@ -210,15 +218,17 @@ struct linked_list_t {
 	 * macro, e.g.: list->invoke(list, offsetof(object_t, method));
 	 * 
 	 * @param offset	offset of the method to invoke on objects
+	 * @param ...		user data to supply to called function (limited to 5 arguments)
 	 */
-	void (*invoke_offset) (linked_list_t *this, size_t offset);
+	void (*invoke_offset) (linked_list_t *this, size_t offset, ...);
 	
 	/**
 	 * Invoke a function on all of the contained objects.
 	 * 
-	 * @param offset	offset of the method to invoke on objects
+	 * @param function	offset of the method to invoke on objects
+	 * @param ...		user data to supply to called function (limited to 5 arguments)
 	 */
-	void (*invoke_function) (linked_list_t *this, void (*)(void*));
+	void (*invoke_function) (linked_list_t *this, linked_list_invoke_t function, ...);
 	
 	/**
 	 * Clones a list and its objects using the objects' clone method.