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Message-ID: <61c05cb0-a956-3cc7-5dab-e11ebf0e95bf@infradead.org>
Date: Thu, 16 Jul 2020 07:59:20 -0700
From: Randy Dunlap <rdunlap@...radead.org>
To: Mickaël Salaün <mic@...ikod.net>,
Kees Cook <keescook@...omium.org>
Cc: linux-kernel@...r.kernel.org, Aleksa Sarai <cyphar@...har.com>,
Alexei Starovoitov <ast@...nel.org>, Al Viro <viro@...iv.linux.org.uk>,
Andrew Morton <akpm@...ux-foundation.org>, Andy Lutomirski
<luto@...nel.org>, Christian Brauner <christian.brauner@...ntu.com>,
Christian Heimes <christian@...hon.org>,
Daniel Borkmann <daniel@...earbox.net>,
Deven Bowers <deven.desai@...ux.microsoft.com>,
Dmitry Vyukov <dvyukov@...gle.com>, Eric Biggers <ebiggers@...nel.org>,
Eric Chiang <ericchiang@...gle.com>, Florian Weimer <fweimer@...hat.com>,
James Morris <jmorris@...ei.org>, Jan Kara <jack@...e.cz>,
Jann Horn <jannh@...gle.com>, Jonathan Corbet <corbet@....net>,
Lakshmi Ramasubramanian <nramas@...ux.microsoft.com>,
Matthew Garrett <mjg59@...gle.com>, Matthew Wilcox <willy@...radead.org>,
Michael Kerrisk <mtk.manpages@...il.com>,
Mickaël Salaün <mickael.salaun@....gouv.fr>,
Mimi Zohar <zohar@...ux.ibm.com>,
Philippe Trébuchet <philippe.trebuchet@....gouv.fr>,
Scott Shell <scottsh@...rosoft.com>,
Sean Christopherson <sean.j.christopherson@...el.com>,
Shuah Khan <shuah@...nel.org>, Steve Dower <steve.dower@...hon.org>,
Steve Grubb <sgrubb@...hat.com>,
Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
Thibaut Sautereau <thibaut.sautereau@....gouv.fr>,
Vincent Strubel <vincent.strubel@....gouv.fr>,
kernel-hardening@...ts.openwall.com, linux-api@...r.kernel.org,
linux-integrity@...r.kernel.org, linux-security-module@...r.kernel.org,
linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH v6 7/7] ima: add policy support for the new file open
MAY_OPENEXEC flag
On 7/16/20 7:40 AM, Mickaël Salaün wrote:
>
> On 15/07/2020 22:40, Kees Cook wrote:
>> On Tue, Jul 14, 2020 at 08:16:38PM +0200, Mickaël Salaün wrote:
>>> From: Mimi Zohar <zohar@...ux.ibm.com>
>>>
>>> The kernel has no way of differentiating between a file containing data
>>> or code being opened by an interpreter. The proposed O_MAYEXEC
>>> openat2(2) flag bridges this gap by defining and enabling the
>>> MAY_OPENEXEC flag.
>>>
>>> This patch adds IMA policy support for the new MAY_OPENEXEC flag.
>>>
>>> Example:
>>> measure func=FILE_CHECK mask=^MAY_OPENEXEC
>>> appraise func=FILE_CHECK appraise_type=imasig mask=^MAY_OPENEXEC
>>>
>>> Signed-off-by: Mimi Zohar <zohar@...ux.ibm.com>
>>> Reviewed-by: Lakshmi Ramasubramanian <nramas@...ux.microsoft.com>
>>> Acked-by: Mickaël Salaün <mic@...ikod.net>
>>
>> (Process nit: if you're sending this on behalf of another author, then
>> this should be Signed-off-by rather than Acked-by.)
>
> I'm not a co-author of this patch.
>
from Documentation/process/submitting-patches.rst:
The Signed-off-by: tag indicates that the signer was involved in the
development of the patch, or that he/she was in the patch's delivery path.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
--
~Randy
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