[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20190722213527.18deeaf07ae036cce57035ea@linux-foundation.org>
Date: Mon, 22 Jul 2019 21:35:27 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: Joe Perches <joe@...ches.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
linux-kernel@...r.kernel.org, Jonathan Corbet <corbet@....net>, Stephen
Kitt <steve@....org>, Kees Cook <keescook@...omium.org>, Nitin Gote
<nitin.r.gote@...el.com>, jannh@...gle.com,
kernel-hardening@...ts.openwall.com, Rasmus Villemoes
<rasmus.villemoes@...vas.dk>
Subject: Re: [PATCH 1/2] string: Add stracpy and stracpy_pad mechanisms
On Mon, 22 Jul 2019 17:38:15 -0700 Joe Perches <joe@...ches.com> wrote:
> Several uses of strlcpy and strscpy have had defects because the
> last argument of each function is misused or typoed.
>
> Add macro mechanisms to avoid this defect.
>
> stracpy (copy a string to a string array) must have a string
> array as the first argument (to) and uses sizeof(to) as the
> size.
>
> These mechanisms verify that the to argument is an array of
> char or other compatible types like u8 or unsigned char.
>
> A BUILD_BUG is emitted when the type of to is not compatible.
>
It would be nice to include some conversions. To demonstrate the need,
to test the code, etc.
Powered by blists - more mailing lists
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
