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From: Andy Lutomirski <luto@kernel.org>
Date: Tue, 1 Aug 2017 06:24:42 -0700
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Subject: Re: [PATCH v4 05/15] selinux: Refactor to remove bprm_secureexec hook
To: Kees Cook <keescook@chromium.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
        Stephen Smalley <sds@tycho.nsa.gov>,
        David Howells <dhowells@redhat.com>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        John Johansen <john.johansen@canonical.com>,
        "Serge E. Hallyn" <serge@hallyn.com>, Paul Moore <paul@paul-moore.com>,
        Casey Schaufler <casey@schaufler-ca.com>,
        Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
        James Morris <james.l.morris@oracle.com>,
        Andy Lutomirski <luto@kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Linux FS Devel <linux-fsdevel@vger.kernel.org>,
        LSM List <linux-security-module@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
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On Mon, Jul 31, 2017 at 4:51 PM, Kees Cook <keescook@chromium.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@tycho.nsa.gov>
> Signed-off-by: Kees Cook <keescook@chromium.org>
> Acked-by: Paul Moore <paul@paul-moore.com>
> Tested-by: Paul Moore <paul@paul-moore.com>
> Acked-by: Serge Hallyn <serge@hallyn.com>

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