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Sat, 26 Jul 2025 11:54:41 -0700 (PDT) Received: from archlinux ([205.254.163.25]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-23fbe512d29sm21363395ad.140.2025.07.26.11.54.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 26 Jul 2025 11:54:40 -0700 (PDT) From: Suchit Karunakaran To: apw@canonical.com, joe@perches.com, dwaipayanray1@gmail.com, lukas.bulwahn@gmail.com Cc: skhan@linuxfoundation.org, linux-kernel-mentees@lists.linux.dev, linux-kernel@vger.kernel.org, Suchit Karunakaran Subject: [PATCH] checkpatch: suppress strscpy warnings for userspace tools Date: Sun, 27 Jul 2025 00:24:32 +0530 Message-ID: <20250726185432.162632-1-suchitkarunakaran@gmail.com> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The checkpatch.pl script currently warns against the use of strcpy,=20 strlcpy, and strncpy, recommending strscpy as a safer alternative.=20 However, these warnings are also triggered for code under tools/ and=20 scripts/, which are userspace code where strscpy is not available.=20 This patch suppresses these warnings for files in tools/ and scripts/. Signed-off-by: Suchit Karunakaran --- scripts/checkpatch.pl | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index e722dd6fa8ef..1533cfbc8305 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -7020,19 +7020,19 @@ sub process { # } =20 # strcpy uses that should likely be strscpy - if ($line =3D~ /\bstrcpy\s*\(/) { + if ($line =3D~ /\bstrcpy\s*\(/ && $realfile !~ m@\btools/@ && $realfile = !~ m@\bscripts/@) { WARN("STRCPY", "Prefer strscpy over strcpy - see: https://github.com/KSPP/linux/i= ssues/88\n" . $herecurr); } =20 # strlcpy uses that should likely be strscpy - if ($line =3D~ /\bstrlcpy\s*\(/) { + if ($line =3D~ /\bstrlcpy\s*\(/ && $realfile !~ m@\btools/@ && $realfile= !~ m@\bscripts/@) { WARN("STRLCPY", "Prefer strscpy over strlcpy - see: https://github.com/KSPP/linux/= issues/89\n" . $herecurr); } =20 # strncpy uses that should likely be strscpy or strscpy_pad - if ($line =3D~ /\bstrncpy\s*\(/) { + if ($line =3D~ /\bstrncpy\s*\(/ && $realfile !~ m@\btools/@ && $realfile= !~ m@\bscripts/@) { WARN("STRNCPY", "Prefer strscpy, strscpy_pad, or __nonstring over strncpy - see: h= ttps://github.com/KSPP/linux/issues/90\n" . $herecurr); } --=20 2.50.1