Re: [PATCH v6 7/7] ima: add policy support for the new file open MAY_OPENEXEC flag

[Kees Cook]

On Tue, Jul 14, 2020 at 08:16:38PM +0200, Mickaël Salaün wrote:
> From: Mimi Zohar <zohar@xxxxxxxxxxxxx>
> 
> 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@xxxxxxxxxxxxx>
> Reviewed-by: Lakshmi Ramasubramanian <nramas@xxxxxxxxxxxxxxxxxxx>
> Acked-by: Mickaël Salaün <mic@xxxxxxxxxxx>

(Process nit: if you're sending this on behalf of another author, then
this should be Signed-off-by rather than Acked-by.)

-- 
Kees Cook