linux-hardening - [PATCH -next v2 7/9] coccinelle: Add rules to find str_write

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Message-ID: <20240904091451.3328272-8-lihongbo22@huawei.com>
Date: Wed, 4 Sep 2024 17:14:49 +0800
From: Hongbo Li <lihongbo22@...wei.com>
To: <kees@...nel.org>, <andy@...nel.org>, <Julia.Lawall@...ia.fr>,
	<nicolas.palix@...g.fr>
CC: <linux-hardening@...r.kernel.org>, <cocci@...ia.fr>,
	<lihongbo22@...wei.com>
Subject: [PATCH -next v2 7/9] coccinelle: Add rules to find str_write_read() replacements

As other rules done, we add rules for str_write_read()
to check the relative opportunities.

Signed-off-by: Hongbo Li <lihongbo22@...wei.com>
---
 scripts/coccinelle/api/string_choices.cocci | 23 +++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/scripts/coccinelle/api/string_choices.cocci b/scripts/coccinelle/api/string_choices.cocci
index f9ee0352cc3b..3ef7309164f4 100644
--- a/scripts/coccinelle/api/string_choices.cocci
+++ b/scripts/coccinelle/api/string_choices.cocci
@@ -292,3 +292,26 @@ e << str_read_write_r.E;
 @@
 
 coccilib.report.print_report(p[0], "opportunity for str_read_write(%s)" % e)
+
+@..._write_read depends on patch@
+expression E;
+@@
+(
+-      ((E) ? "write" : "read")
++      str_write_read(E)
+)
+
+@..._write_read_r depends on !patch exists@
+expression E;
+position P;
+@@
+(
+*      ((E@P) ? "write" : "read")
+)
+
+@...ipt:python depends on report@
+p << str_write_read_r.P;
+e << str_write_read_r.E;
+@@
+
+coccilib.report.print_report(p[0], "opportunity for str_write_read(%s)" % e)
-- 
2.34.1