From: Jason Wang <wangborong@cdjrlc.com>
To: krzysztof.kozlowski@canonical.com
Cc: linux@armlinux.org.uk, linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org,
Jason Wang <wangborong@cdjrlc.com>
Subject: [PATCH] ARM: s3c: Use strscpy to replace strlcpy
Date: Mon, 6 Sep 2021 21:46:56 +0800 [thread overview]
Message-ID: <20210906134656.101088-1-wangborong@cdjrlc.com> (raw)
The strlcpy should not be used because it doesn't limit the source
length. As linus says, it's a completely useless function if you
can't implicitly trust the source string - but that is almost always
why people think they should use it! All in all the BSD function
will lead some potential bugs.
But the strscpy doesn't require reading memory from the src string
beyond the specified "count" bytes, and since the return value is
easier to error-check than strlcpy()'s. In addition, the implementation
is robust to the string changing out from underneath it, unlike the
current strlcpy() implementation.
Thus, We prefer using strscpy instead of strlcpy.
Signed-off-by: Jason Wang <wangborong@cdjrlc.com>
---
arch/arm/mach-s3c/mach-mini6410.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/mach-s3c/mach-mini6410.c b/arch/arm/mach-s3c/mach-mini6410.c
index 741fa1f09694..c14c2e27127b 100644
--- a/arch/arm/mach-s3c/mach-mini6410.c
+++ b/arch/arm/mach-s3c/mach-mini6410.c
@@ -262,7 +262,7 @@ static char mini6410_features_str[12] __initdata = "0";
static int __init mini6410_features_setup(char *str)
{
if (str)
- strlcpy(mini6410_features_str, str,
+ strscpy(mini6410_features_str, str,
sizeof(mini6410_features_str));
return 1;
}
--
2.33.0
next reply other threads:[~2021-09-06 13:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-06 13:46 Jason Wang [this message]
2021-09-06 13:57 ` Krzysztof Kozlowski
2021-09-20 8:15 ` Krzysztof Kozlowski
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210906134656.101088-1-wangborong@cdjrlc.com \
--to=wangborong@cdjrlc.com \
--cc=krzysztof.kozlowski@canonical.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-samsung-soc@vger.kernel.org \
--cc=linux@armlinux.org.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®