libmetal: add metal_list_for_each_safe() support

Add a more secure way to traverse linked lists Signed-off-by: Guiding Li <liguiding1@xiaomi.com>
OpenAMP · Sep 12, 2023 · d778210 · d778210
1 parent 0bb6d9e
commit d778210
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/lib/list.h b/lib/list.h
@@ -98,6 +98,10 @@ static inline struct metal_list *metal_list_first(struct metal_list *list)
 	     (node) != (list);			\
 	     (node) = (node)->next)
 
+#define metal_list_for_each_safe(list, node, temp)		\
+	for (node = (list)->next, temp = node->next;		\
+	     node != (list); node = temp, temp = node->next)
+
 static inline bool metal_list_find_node(struct metal_list *list,
 					struct metal_list *node)
 {