From: Manuel Ebner <manuelebner@mailbox.org>
To: Andy Shevchenko <andy.shevchenko@gmail.com>,
Kees Cook <kees@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
Shuah Khan <skhan@linuxfoundation.org>,
Andy Whitcroft <apw@canonical.com>, Joe Perches <joe@perches.com>,
Dwaipayan Ray <dwaipayanray1@gmail.com>,
Lukas Bulwahn <lukas.bulwahn@gmail.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
David Laight <david.laight.linux@gmail.com>,
Randy Dunlap <rdunlap@infradead.org>,
Jani Nikula <jani.nikula@intel.com>,
Heiko Carstens <hca@linux.ibm.com>,
workflows@vger.kernel.org (open list:DOCUMENTATION PROCESS),
linux-doc@vger.kernel.org (open list:DOCUMENTATION),
linux-kernel@vger.kernel.org (open list)
Cc: Manuel Ebner <manuelebner@mailbox.org>
Subject: [PATCH v2 2/3] scripts: checkpatch.pl: add warning for strlcat()
Date: Thu, 14 May 2026 18:28:59 +0200 [thread overview]
Message-ID: <20260514162858.107919-2-manuelebner@mailbox.org> (raw)
In-Reply-To: <20260514160719.105084-3-manuelebner@mailbox.org>
add a warning for strlcat()
Signed-off-by: Manuel Ebner <manuelebner@mailbox.org>
---
scripts/checkpatch.pl | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 0492d6afc9a1..4c1b43ebe00d 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -7085,6 +7085,12 @@ sub process {
"Prefer strscpy over strlcpy - see: https://github.com/KSPP/linux/issues/89\n" . $herecurr);
}
+# strlcat uses that should be a more supported function
+ if ($line =~ /\bstrlcat\s*\(/ && !is_userspace($realfile)) {
+ WARN("STRLCAT",
+ "Prefer a more supported function over strlcat - see: https://github.com/KSPP/linux/issues/370\n" . $herecurr);
+ }
+
# strncpy uses that should likely be strscpy or strscpy_pad
if ($line =~ /\bstrncpy\s*\(/ && !is_userspace($realfile)) {
WARN("STRNCPY",
--
2.54.0
next prev parent reply other threads:[~2026-05-14 16:29 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-14 16:07 [PATCH v2 0/3] Doc, scripts: facilitate phaseout of strlcat Manuel Ebner
2026-05-14 16:26 ` [PATCH v2 1/3] Doc: deprecated.rst: add strlcat() Manuel Ebner
2026-05-14 16:31 ` Kees Cook
2026-05-14 17:51 ` Randy Dunlap
2026-05-14 16:28 ` Manuel Ebner [this message]
2026-05-14 16:32 ` [PATCH v2 2/3] scripts: checkpatch.pl: add warning for strlcat() Kees Cook
2026-05-14 16:30 ` [PATCH v2 3/3] drivers: add deprecated remarks to strlcat() Manuel Ebner
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