[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Fri, 5 May 2017 15:06:59 +0200
From: Djalal Harouni <tixxdz@...il.com>
To: "Serge E. Hallyn" <serge@...lyn.com>
Cc: Andy Lutomirski <luto@...capital.net>,
Kees Cook <keescook@...omium.org>,
Andy Lutomirski <luto@...nel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
"kernel-hardening@...ts.openwall.com"
<kernel-hardening@...ts.openwall.com>,
LSM List <linux-security-module@...r.kernel.org>,
Linux API <linux-api@...r.kernel.org>,
Dongsu Park <dpark@...teo.net>,
Casey Schaufler <casey@...aufler-ca.com>,
James Morris <james.l.morris@...cle.com>,
Paul Moore <paul@...l-moore.com>,
Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jonathan Corbet <corbet@....net>, Jessica Yu <jeyu@...hat.com>,
Rusty Russell <rusty@...tcorp.com.au>,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Ingo Molnar <mingo@...nel.org>,
belakhdar abdeldjalil <zendyani@...il.com>,
Peter Zijlstra <peterz@...radead.org>,
Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH v3 2/2] modules:capabilities: add a per-task modules
autoload restriction
Hi Serge,
On Thu, May 4, 2017 at 4:58 PM, Serge E. Hallyn <serge@...lyn.com> wrote:
> On Thu, May 04, 2017 at 03:07:49PM +0200, Djalal Harouni wrote:
>> On Sat, Apr 22, 2017 at 2:17 PM, Djalal Harouni <tixxdz@...il.com> wrote:
>> > On Sat, Apr 22, 2017 at 1:28 AM, Andy Lutomirski <luto@...capital.net> wrote:
>> [...]
>> >>
>> >> My point is that all of these need some way to handle configuration
>> >> and inheritance, and I don't think that a bunch of per-task prctls is
>> >> the right way. As just an example, saying that interactive users can
>> >> autoload modules but other users can't, or that certain systemd
>> >> services can, etc, might be nice. Linus already complained that he
>> >> (i.e. user "torvalds" or whatever) should be able to profile the
>> >> kernel but that other uids should not be able to.
>> >
>> > Neat, maybe this could already be achieved with this interface and
>> > systemd-logind, "ModulesAutoloadUsers=andy" in logind.conf where
>> > "andy" is the only logged-in user able to trigger and autoload kernel
>> > modules. However maybe we should not restrict too much other bits or
>> > functionality of the other users, please let me will follow up later
>> > on it.
>> >
>> >> I personally like my implicit_rights idea, and it might be interesting
>> >> to prototype it.
>> >
>>
>> Andy following on the idea of per user settings, I'm curious did you
>> manage to make some advance on how to store the user settings ? the
>> user database format is old and not extensible, there was cgmanager or
>
> (v2 is under very very early consideration, would love to stay in the loop
> as this is considered)
>
For user database I'm not aware of any code, but it seems that if the
database or settings are adapted to today use cases then
systemd-logind may use them. Yes if there is something I'll Cc'you.
Thanks!
--
tixxdz
Powered by blists - more mailing lists