From: Andrew Morton <akpm@linux-foundation.org>
To: Joe Perches <joe@perches.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel@vger.kernel.org, Jonathan Corbet <corbet@lwn.net>,
Stephen Kitt <steve@sk2.org>, Kees Cook <keescook@chromium.org>,
Nitin Gote <nitin.r.gote@intel.com>,
jannh@google.com, kernel-hardening@lists.openwall.com,
Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Subject: Re: [PATCH 1/2] string: Add stracpy and stracpy_pad mechanisms
Date: Mon, 22 Jul 2019 21:35:27 -0700 [thread overview]
Message-ID: <20190722213527.18deeaf07ae036cce57035ea@linux-foundation.org> (raw)
In-Reply-To: <7ab8957eaf9b0931a59eff6e2bd8c5169f2f6c41.1563841972.git.joe@perches.com>
On Mon, 22 Jul 2019 17:38:15 -0700 Joe Perches <joe@perches.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.
next prev parent reply other threads:[~2019-07-23 4:35 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-23 0:38 [PATCH 0/2] string: Add stracpy and stracpy_pad Joe Perches
2019-07-23 0:38 ` [PATCH 1/2] string: Add stracpy and stracpy_pad mechanisms Joe Perches
2019-07-23 0:46 ` [Cocci] [Fwd: [PATCH 1/2] string: Add stracpy and stracpy_pad mechanisms] Joe Perches
2019-07-23 20:52 ` Julia Lawall
2019-07-23 20:52 ` [Cocci] " Julia Lawall
2019-07-23 23:42 ` Joe Perches
2019-07-23 23:42 ` [Cocci] " Joe Perches
2019-07-24 3:54 ` Julia Lawall
2019-07-24 3:54 ` [Cocci] " Julia Lawall
2019-07-24 4:19 ` Joe Perches
2019-07-24 4:19 ` [Cocci] " Joe Perches
2019-07-24 4:27 ` Julia Lawall
2019-07-24 4:27 ` [Cocci] " Julia Lawall
2019-07-24 4:37 ` Joe Perches
2019-07-24 4:37 ` [Cocci] " Joe Perches
2019-07-24 10:28 ` David Laight
2019-07-24 10:28 ` [Cocci] " David Laight
2019-07-24 10:43 ` Joe Perches
2019-07-24 10:43 ` [Cocci] " Joe Perches
2019-07-24 11:45 ` Julia Lawall
2019-07-24 11:45 ` [Cocci] " Julia Lawall
2019-07-25 1:42 ` Julia Lawall
2019-07-25 1:42 ` [Cocci] " Julia Lawall
2019-07-25 7:46 ` [PATCH 1/2] string: Add stracpy and stracpy_pad mechanisms Markus Elfring
2019-07-25 7:46 ` [Cocci] " Markus Elfring
2019-07-25 7:46 ` Markus Elfring
2019-07-25 11:34 ` Julia Lawall
2019-07-25 11:34 ` [Cocci] " Julia Lawall
2019-07-25 11:34 ` Julia Lawall
2019-07-25 12:40 ` [1/2] " Markus Elfring
2019-07-25 12:40 ` [Cocci] " Markus Elfring
2019-07-25 12:40 ` Markus Elfring
2019-07-25 13:45 ` [PATCH 1/2] " Markus Elfring
2019-07-25 13:45 ` [Cocci] " Markus Elfring
2019-07-25 13:45 ` Markus Elfring
2019-07-25 13:48 ` Julia Lawall
2019-07-25 13:48 ` [Cocci] " Julia Lawall
2019-07-25 13:48 ` Julia Lawall
2019-07-25 14:48 ` [1/2] " Markus Elfring
2019-07-25 14:48 ` [Cocci] " Markus Elfring
2019-07-25 14:48 ` Markus Elfring
2019-07-25 13:50 ` [Fwd: [PATCH 1/2] string: Add stracpy and stracpy_pad mechanisms] Joe Perches
2019-07-25 13:50 ` [Cocci] " Joe Perches
2019-07-25 13:58 ` Julia Lawall
2019-07-25 13:58 ` [Cocci] " Julia Lawall
2019-07-25 14:12 ` Joe Perches
2019-07-25 14:12 ` [Cocci] " Joe Perches
2019-07-25 22:51 ` Julia Lawall
2019-07-25 22:51 ` [Cocci] " Julia Lawall
2019-07-26 6:15 ` [1/2] string: Add stracpy and stracpy_pad mechanisms Markus Elfring
2019-07-26 6:15 ` [Cocci] " Markus Elfring
2019-07-26 6:15 ` Markus Elfring
2019-07-29 14:07 ` [Fwd: [PATCH 1/2] string: Add stracpy and stracpy_pad mechanisms] Julia Lawall
2019-07-29 14:07 ` [Cocci] " Julia Lawall
2019-07-29 16:28 ` Joe Perches
2019-07-29 16:28 ` [Cocci] " Joe Perches
2019-07-23 4:35 ` Andrew Morton [this message]
2019-07-23 4:42 ` [PATCH 1/2] string: Add stracpy and stracpy_pad mechanisms Joe Perches
2019-07-23 4:42 ` Joe Perches
2019-07-23 21:29 ` Kees Cook
2019-07-23 6:55 ` Rasmus Villemoes
2019-07-23 15:41 ` David Laight
2019-07-23 15:41 ` David Laight
2019-07-23 15:50 ` Joe Perches
2019-07-23 15:50 ` Joe Perches
2019-07-23 21:34 ` Kees Cook
2019-07-23 21:34 ` Kees Cook
2019-07-24 12:05 ` Yann Droneaud
2019-07-24 12:05 ` Yann Droneaud
2019-07-24 13:09 ` Rasmus Villemoes
2019-07-24 13:09 ` Rasmus Villemoes
2019-07-24 17:08 ` Linus Torvalds
2019-07-24 17:08 ` Linus Torvalds
2019-07-25 20:03 ` Kees Cook
2019-07-25 20:03 ` Kees Cook
2019-07-26 2:46 ` Joe Perches
2019-07-26 2:46 ` Joe Perches
2019-07-23 21:36 ` Kees Cook
2019-07-24 11:40 ` Joe Perches
2019-07-24 11:40 ` Joe Perches
2019-07-23 0:38 ` [PATCH 2/2] kernel-doc: core-api: Include string.h into core-api Joe Perches
2019-07-23 21:28 ` Kees Cook
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