linux-kernel - Re: [PATCH v4 05/15] selinux: Refactor to remove bprm

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Message-ID: <CALCETrXhuqvDUbHRZSa7gTwpbVrg1N7SH-Px7nWUWhP6p9JXmQ@mail.gmail.com>
Date:   Tue, 1 Aug 2017 06:24:42 -0700
From:   Andy Lutomirski <luto@...nel.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Stephen Smalley <sds@...ho.nsa.gov>,
        David Howells <dhowells@...hat.com>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        John Johansen <john.johansen@...onical.com>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Paul Moore <paul@...l-moore.com>,
        Casey Schaufler <casey@...aufler-ca.com>,
        Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
        James Morris <james.l.morris@...cle.com>,
        Andy Lutomirski <luto@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Linux FS Devel <linux-fsdevel@...r.kernel.org>,
        LSM List <linux-security-module@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 05/15] selinux: Refactor to remove bprm_secureexec hook

On Mon, Jul 31, 2017 at 4:51 PM, Kees Cook <keescook@...omium.org> wrote:
> The SELinux bprm_secureexec hook can be merged with the bprm_set_creds
> hook since it's dealing with the same information, and all of the details
> are finalized during the first call to the bprm_set_creds hook via
> prepare_binprm() (subsequent calls due to binfmt_script, etc, are ignored
> via bprm->called_set_creds).
>
> Here, the test can just happen at the end of the bprm_set_creds hook,
> and the bprm_secureexec hook can be dropped.
>
> Cc: Stephen Smalley <sds@...ho.nsa.gov>
> Signed-off-by: Kees Cook <keescook@...omium.org>
> Acked-by: Paul Moore <paul@...l-moore.com>
> Tested-by: Paul Moore <paul@...l-moore.com>
> Acked-by: Serge Hallyn <serge@...lyn.com>

Reviewed-by: Andy Lutomirski <luto@...nel.org>