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Date:   Tue, 28 May 2019 19:00:35 -0400
From:   Steve Grubb <sgrubb@...hat.com>
To:     Paul Moore <paul@...l-moore.com>
Cc:     Dan Walsh <dwalsh@...hat.com>, Neil Horman <nhorman@...driver.com>,
        Richard Guy Briggs <rgb@...hat.com>,
        containers@...ts.linux-foundation.org, linux-api@...r.kernel.org,
        Linux-Audit Mailing List <linux-audit@...hat.com>,
        linux-fsdevel@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
        omosnace@...hat.com, dhowells@...hat.com, simo@...hat.com,
        Eric Paris <eparis@...isplace.org>,
        Serge Hallyn <serge@...lyn.com>, ebiederm@...ssion.com,
        Mrunal Patel <mpatel@...hat.com>
Subject: Re: [PATCH ghak90 V6 00/10] audit: implement container identifier

On Tuesday, May 28, 2019 6:26:47 PM EDT Paul Moore wrote:
> On Tue, May 28, 2019 at 5:54 PM Daniel Walsh <dwalsh@...hat.com> wrote:
> > On 4/22/19 9:49 AM, Paul Moore wrote:
> > > On Mon, Apr 22, 2019 at 7:38 AM Neil Horman <nhorman@...driver.com> 
wrote:
> > >> On Mon, Apr 08, 2019 at 11:39:07PM -0400, Richard Guy Briggs wrote:
> > >>> Implement kernel audit container identifier.
> > >> 
> > >> I'm sorry, I've lost track of this, where have we landed on it? Are we
> > >> good for inclusion?
> > > 
> > > I haven't finished going through this latest revision, but unless
> > > Richard made any significant changes outside of the feedback from the
> > > v5 patchset I'm guessing we are "close".
> > > 
> > > Based on discussions Richard and I had some time ago, I have always
> > > envisioned the plan as being get the kernel patchset, tests, docs
> > > ready (which Richard has been doing) and then run the actual
> > > implemented API by the userland container folks, e.g. cri-o/lxc/etc.,
> > > to make sure the actual implementation is sane from their perspective.
> > > They've already seen the design, so I'm not expecting any real
> > > surprises here, but sometimes opinions change when they have actual
> > > code in front of them to play with and review.
> > > 
> > > Beyond that, while the cri-o/lxc/etc. folks are looking it over,
> > > whatever additional testing we can do would be a big win.  I'm
> > > thinking I'll pull it into a separate branch in the audit tree
> > > (audit/working-container ?) and include that in my secnext kernels
> > > that I build/test on a regular basis; this is also a handy way to keep
> > > it based against the current audit/next branch.  If any changes are
> > > needed Richard can either chose to base those changes on audit/next or
> > > the separate audit container ID branch; that's up to him.  I've done
> > > this with other big changes in other trees, e.g. SELinux, and it has
> > > worked well to get some extra testing in and keep the patchset "merge
> > > ready" while others outside the subsystem look things over.
> > 
> > Mrunal Patel (maintainer of CRI-O) and I have reviewed the API, and
> > believe this is something we can work on in the container runtimes team
> > to implement the container auditing code in CRI-O and Podman.
> 
> Thanks Dan.  If I pulled this into a branch and built you some test
> kernels to play with, any idea how long it might take to get a proof
> of concept working on the cri-o side?

We'd need to merge user space patches and let them use that instead of the 
raw interface. I'm not going to merge user space until we are pretty sure the 
patch is going into the kernel.

-Steve

> FWIW, I've also reached out to some of the LXC folks I know to get
> their take on the API.  I think if we can get two different container
> runtimes to give the API a thumbs-up then I think we are in good shape
> with respect to the userspace interface.
> 
> I just finished looking over the last of the pending audit kernel
> patches that were queued waiting for the merge window to open so this
> is next on my list to look at.  I plan to start doing that
> tonight/tomorrow, and as long as the changes between v5/v6 are not
> that big, it shouldn't take too long.




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