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Message-ID: <CAHp75Vfq5KQupcyx_84YcSOQ8mvNDvFE3R20KdyLEqEz74p3OQ@mail.gmail.com>
Date: Mon, 25 Feb 2019 10:19:47 +0200
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: "Tobin C. Harding" <tobin@...nel.org>
Cc: Kees Cook <keescook@...omium.org>, Jann Horn <jannh@...gle.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, Randy Dunlap <rdunlap@...radead.org>,
Rasmus Villemoes <linux@...musvillemoes.dk>, Stephen Rothwell <sfr@...b.auug.org.au>,
Andy Lutomirski <luto@...capital.net>, Daniel Micay <danielmicay@...il.com>,
Arnd Bergmann <arnd@...db.de>, Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
"Gustavo A. R. Silva" <gustavo@...eddedor.com>, Shuah Khan <shuah@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Kernel Hardening <kernel-hardening@...ts.openwall.com>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/1] lib/string: Add strscpy_pad() function
On Mon, Feb 25, 2019 at 6:17 AM Tobin C. Harding <tobin@...nel.org> wrote:
>
> We have a function to copy strings safely and we have a function to copy
> strings and zero the tail of the destination (if source string is
> shorter than destination buffer) but we do not have a function to do
> both at once. This means developers must write this themselves if they
> desire this functionality. This is a chore, and also leaves us open to
> off by one errors unnecessarily.
>
> Add a function that calls strscpy() then memset()s the tail to zero if
> the source string is shorter than the destination buffer.
>
> Add test module for the new code.
> --- /dev/null
> +++ b/lib/test_strscpy.c
> @@ -0,0 +1,175 @@
> +// SPDX-License-Identifier: GPL-2.0
> +MODULE_LICENSE("GPL");
License mismatch.
Do we need a separate module for this test?
--
With Best Regards,
Andy Shevchenko
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