On Thu, Jul 16, 2020 at 07:59:20AM -0700, Randy Dunlap wrote:

On 7/16/20 7:40 AM, Mickaël Salaün wrote:

quoted

On 15/07/2020 22:40, Kees Cook wrote:

quoted

On Tue, Jul 14, 2020 at 08:16:38PM +0200, Mickaël Salaün wrote:

quoted

From: Mimi Zohar <zohar@linux.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@linux.ibm.com>
Reviewed-by: Lakshmi Ramasubramanian <redacted>
Acked-by: Mickaël Salaün <mic@digikod.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 beat me to it. :)

-- 
Kees Cook