Re: [kernel-hardening] Re: [PATCH RFC v2 1/3] LSM: Allow per LSM module per "struct task_struct" blob.

From: Kees Cook
Date: Tue Apr 11 2017 - 00:43:52 EST


On Mon, Apr 10, 2017 at 1:00 PM, Djalal Harouni <tixxdz@xxxxxxxxx> wrote:
> On Mon, Apr 10, 2017 at 9:26 PM, Casey Schaufler <casey@xxxxxxxxxxxxxxxx> wrote:
>> I think that would be the prudent approach. There is still
>> the possibility that blob sharing (or full stacking, if you
>> prefer) won't be accepted any time soon.
>
> Ok Casey! I will wait for more feedback, and if other maintainers do
> not object, I will convert it back to rhashtables in next iterations
> making sure that it should be simple to convert later to a blob
> sharing mechanism.

Would it be possible just to add a single field to task_struct if this
LSM is built in? I feel like rhashtables is a huge overhead when a
single field is all that's needed.

-Kees

--
Kees Cook
Pixel Security