From: Kees Cook <keescook@chromium.org>
To: KP Singh <kpsingh@kernel.org>
Cc: Casey Schaufler <casey@schaufler-ca.com>,
linux-security-module@vger.kernel.org, bpf@vger.kernel.org,
paul@paul-moore.com, song@kernel.org, daniel@iogearbox.net,
ast@kernel.org, Kui-Feng Lee <sinquersw@gmail.com>
Subject: Re: [PATCH v3 2/5] security: Count the LSMs enabled at compile time
Date: Wed, 20 Sep 2023 12:24:26 -0700 [thread overview]
Message-ID: <202309201221.205BA18@keescook> (raw)
In-Reply-To: <98b02c73-295d-baad-5c77-0c8b74826ca9@schaufler-ca.com>
On 9/18/2023 2:24 PM, KP Singh wrote:
> [...]
> +#define __COUNT_COMMAS(_0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _n, X...) _n
> +#define COUNT_COMMAS(a, X...) __COUNT_COMMAS(, ##X, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
> +#define ___COUNT_COMMAS(args...) COUNT_COMMAS(args)
Oh! Oops, I missed that this _DOES_ already exist in Linux:
cf14f27f82af ("macro: introduce COUNT_ARGS() macro")
now in include/linux/args.h as COUNT_ARGS():
#define __COUNT_ARGS(_0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _n, X...) _n
#define COUNT_ARGS(X...) __COUNT_ARGS(, ##X, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
I think this can be refactored to use that?
-Kees
--
Kees Cook
next prev parent reply other threads:[~2023-09-20 19:24 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-18 21:24 [PATCH v3 0/5] Reduce overhead of LSMs with static calls KP Singh
2023-09-18 21:24 ` [PATCH v3 1/5] kernel: Add helper macros for loop unrolling KP Singh
2023-09-20 15:46 ` Kees Cook
2023-09-20 18:06 ` Casey Schaufler
2023-09-21 21:00 ` Song Liu
2023-09-18 21:24 ` [PATCH v3 2/5] security: Count the LSMs enabled at compile time KP Singh
2023-09-20 15:48 ` Kees Cook
2023-09-20 18:07 ` Casey Schaufler
2023-09-20 19:24 ` Kees Cook [this message]
2023-09-21 8:41 ` KP Singh
2023-09-21 20:59 ` Song Liu
2023-09-21 13:20 ` Tetsuo Handa
2023-09-21 13:58 ` KP Singh
2023-09-22 11:25 ` Tetsuo Handa
2023-09-22 14:45 ` KP Singh
2023-09-23 6:56 ` Tetsuo Handa
2023-09-23 16:06 ` KP Singh
2023-09-25 11:03 ` Tetsuo Handa
2023-09-25 11:22 ` KP Singh
2023-10-01 10:51 ` Tetsuo Handa
2023-10-01 14:26 ` KP Singh
2023-10-01 15:00 ` Casey Schaufler
2023-10-02 10:56 ` Tetsuo Handa
2023-10-02 13:04 ` KP Singh
2023-10-02 14:34 ` Tetsuo Handa
2023-09-25 15:48 ` Casey Schaufler
2023-09-23 18:10 ` Casey Schaufler
2023-09-22 14:57 ` Paul Moore
2023-09-23 16:08 ` KP Singh
2023-09-21 14:13 ` KP Singh
2023-09-18 21:24 ` [PATCH v3 3/5] security: Replace indirect LSM hook calls with static calls KP Singh
2023-09-20 15:54 ` Kees Cook
2023-09-21 9:13 ` KP Singh
2023-09-20 18:10 ` Casey Schaufler
2023-09-21 9:14 ` KP Singh
2023-09-21 21:02 ` Song Liu
2023-09-18 21:24 ` [PATCH v3 4/5] bpf: Only enable BPF LSM hooks when an LSM program is attached KP Singh
2023-09-20 16:00 ` Kees Cook
2023-09-20 18:11 ` Casey Schaufler
2023-09-21 21:04 ` Song Liu
2023-09-18 21:24 ` [PATCH v3 5/5] security: Add CONFIG_SECURITY_HOOK_LIKELY KP Singh
2023-09-20 15:44 ` Kees Cook
2023-09-21 8:53 ` KP Singh
2023-09-21 23:03 ` Song Liu
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