From: Kees Cook <keescook@chromium.org>
To: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: linux-hardening@vger.kernel.org
Subject: 2-member sized buffer structs struct_size()
Date: Tue, 10 Oct 2023 16:18:56 -0700 [thread overview]
Message-ID: <202310101614.AA6B7C4@keescook> (raw)
In-Reply-To: <202310101552.3578F46@keescook>
On Tue, Oct 10, 2023 at 03:53:28PM -0700, Kees Cook wrote:
> It's surprising how many of these 2-member structs we have in the kernel
> that do the same basic thing. :)
75. We have 75 of them:
// Options: --all-includes
@sized_byte_buffer@
identifier NAME, SIZE, ARRAY;
typedef s8, s16, s32, s64;
typedef __s8, __s16, __s32, __s64;
typedef u8, u16, u32, u64;
typedef __u8, __u16, __u32, __u64;
type SIZE_TYPE = {char, short, int, long, long long, ssize_t,
s8, s16, s32, s64, __s8, __s16, __s32, __s64,
unsigned char, unsigned short, unsigned int, unsigned long, unsigned long long, size_t,
u8, u16, u32, u64, __u8, __u16, __u32, __u64};
type BYTE_TYPE = {char, unsigned char, u8, __u8};
@@
*struct NAME {
SIZE_TYPE SIZE;
BYTE_TYPE ARRAY[];
};
https://paste.ubuntu.com/p/39CyK9nyqX/
Agh
--
Kees Cook
next prev parent reply other threads:[~2023-10-10 23:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-10 12:59 [PATCH][next] afs: Add __counted_by for struct afs_acl and use struct_size() Gustavo A. R. Silva
2023-10-10 22:53 ` Kees Cook
2023-10-10 23:18 ` Kees Cook [this message]
2023-11-30 22:00 ` Kees Cook
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=202310101614.AA6B7C4@keescook \
--to=keescook@chromium.org \
--cc=gustavoars@kernel.org \
--cc=linux-hardening@vger.kernel.org \
/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