From ab2c896a978a078888ced57c1fd8c5b6ae8b023f Mon Sep 17 00:00:00 2001
From: Donatas Abraitis <donatas@opensourcerouting.org>
Date: Wed, 11 May 2022 13:12:22 +0300
Subject: [PATCH] tools: Add coccinelle script to catch memset/memcpy wrong
 usage

Wrong: memset(&a, 0, sizeof(struct ...));
Good:  memset(&a, 0, sizeof(a));

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
---
 tools/coccinelle/memset.cocci | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 tools/coccinelle/memset.cocci

diff --git a/tools/coccinelle/memset.cocci b/tools/coccinelle/memset.cocci
new file mode 100644
index 0000000000..0da576cda6
--- /dev/null
+++ b/tools/coccinelle/memset.cocci
@@ -0,0 +1,21 @@
+//
+
+@@
+identifier src, dst;
+identifier str, len;
+type t =~ "struct";
+
+@@
+
+(
+- memset(&dst, 0, sizeof(t));
++ memset(&dst, 0, sizeof(dst));
+|
+- memcpy(&dst, &src, sizeof(t));
++ memcpy(&dst, &src, sizeof(dst));
+|
+- char str[...];
+...
+- memset(&str, 0, ...);
++ memset(&str, 0, sizeof(str));
+)