From: Paul Moore <paul@paul-moore.com>
To: Richard Guy Briggs <rgb@redhat.com>
Cc: Ondrej Mosnacek <omosnace@redhat.com>,
containers@lists.linux-foundation.org, linux-api@vger.kernel.org,
Linux-Audit Mailing List <linux-audit@redhat.com>,
linux-fsdevel@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>,
netdev@vger.kernel.org, netfilter-devel@vger.kernel.org,
Steve Grubb <sgrubb@redhat.com>,
David Howells <dhowells@redhat.com>, Simo Sorce <simo@redhat.com>,
Eric Paris <eparis@parisplace.org>,
"Serge E. Hallyn" <serge@hallyn.com>,
"Eric W . Biederman" <ebiederm@xmission.com>,
nhorman@tuxdriver.com
Subject: Re: [PATCH ghak90 V6 05/10] audit: add contid support for signalling the audit daemon
Date: Tue, 9 Apr 2019 10:08:35 -0400 [thread overview]
Message-ID: <CAHC9VhS9EwnfS8BxL__mQrgYywTOgrXdnW=4zCiM_DYJc4U5+g@mail.gmail.com> (raw)
In-Reply-To: <20190409135304.rgkcpgya6h3ciphy@madcap2.tricolour.ca>
On Tue, Apr 9, 2019 at 9:53 AM Richard Guy Briggs <rgb@redhat.com> wrote:
> On 2019-04-09 09:40, Paul Moore wrote:
> > On Tue, Apr 9, 2019 at 8:58 AM Ondrej Mosnacek <omosnace@redhat.com> wrote:
> > > On Tue, Apr 9, 2019 at 5:40 AM Richard Guy Briggs <rgb@redhat.com> wrote:
> > > > Add audit container identifier support to the action of signalling the
> > > > audit daemon.
> > > >
> > > > Since this would need to add an element to the audit_sig_info struct,
> > > > a new record type AUDIT_SIGNAL_INFO2 was created with a new
> > > > audit_sig_info2 struct. Corresponding support is required in the
> > > > userspace code to reflect the new record request and reply type.
> > > > An older userspace won't break since it won't know to request this
> > > > record type.
> > > >
> > > > Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
> > >
> > > This looks good to me.
> > >
> > > Reviewed-by: Ondrej Mosnacek <omosnace@redhat.com>
> > >
> > > Although I'm wondering if we shouldn't try to future-proof the
> > > AUDIT_SIGNAL_INFO2 format somehow, so that we don't need to add
> > > another AUDIT_SIGNAL_INFO3 when the need arises to add yet-another
> > > identifier to it... The simplest solution I can come up with is to add
> > > a "version" field at the beginning (set to 2 initially), then v<N>_len
> > > at the beginning of data for version <N>. But maybe this is too
> > > complicated for too little gain...
> >
> > FWIW, I believe the long term solution to this is the fabled netlink
> > attribute approach that we haven't talked about in some time, but I
> > keep dreaming about (it has been mostly on the back burner becasue 1)
> > time and 2) didn't want to impact the audit container ID work). While
> > I'm not opposed to trying to make things like this a bit more robust
> > by adding version fields and similar things, there are still so many
> > (so very many) problems with the audit kernel/userspace interface that
> > still need to be addressed.
>
> While this particular message type is used very infrequently, adding a
> version field to every message type strikes me as a huge overhead for
> the small likelihood of the format needing to change.
>
> I'd prefer to just key it off the AUDIT_FEATURE_BITMAP or some other
> easily detectable change in this distinguishing feature, such as the
> presence of /proc/self/audit_containerid, which is what I've done in the
> accompanying userspace patchset that I'm preparing to post that works
> with this change.
That's fine. As I said, I'm not overly worried about this; I view
this as a bit of a necessary hack.
--
paul moore
www.paul-moore.com
next prev parent reply other threads:[~2019-04-09 14:08 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-09 3:39 [PATCH ghak90 V6 00/10] audit: implement container identifier Richard Guy Briggs
2019-04-09 3:39 ` [PATCH ghak90 V6 01/10] audit: collect audit task parameters Richard Guy Briggs
2019-04-09 3:39 ` [PATCH ghak90 V6 02/10] audit: add container id Richard Guy Briggs
2019-05-29 14:57 ` Tycho Andersen
2019-05-29 15:29 ` Paul Moore
2019-05-29 15:34 ` Tycho Andersen
2019-05-29 16:03 ` Paul Moore
2019-05-29 22:28 ` Tycho Andersen
2019-05-29 22:39 ` Paul Moore
2019-05-30 17:09 ` Serge E. Hallyn
2019-05-30 19:29 ` Paul Moore
2019-05-30 21:29 ` Tycho Andersen
2019-05-30 23:26 ` Paul Moore
2019-05-31 0:20 ` Richard Guy Briggs
2019-05-31 12:44 ` Paul Moore
2019-06-03 20:24 ` Steve Grubb
2019-06-18 22:12 ` Paul Moore
2019-06-18 22:46 ` Richard Guy Briggs
2019-07-08 18:12 ` Richard Guy Briggs
2019-07-08 20:43 ` Paul Moore
2019-07-15 21:09 ` Paul Moore
2019-07-16 15:37 ` Richard Guy Briggs
2019-07-16 16:08 ` Paul Moore
2019-07-16 16:26 ` Richard Guy Briggs
2019-07-08 18:05 ` Richard Guy Briggs
2019-07-15 21:04 ` Paul Moore
2019-07-16 22:03 ` Richard Guy Briggs
2019-07-16 23:30 ` Paul Moore
2019-07-18 0:51 ` Richard Guy Briggs
2019-07-18 21:52 ` Paul Moore
2019-07-19 16:00 ` Eric W. Biederman
2019-07-20 2:19 ` James Bottomley
2019-07-19 15:32 ` Eric W. Biederman
2019-07-08 17:51 ` Richard Guy Briggs
2019-07-15 20:38 ` Paul Moore
2019-07-16 19:38 ` Richard Guy Briggs
2019-07-16 21:39 ` Paul Moore
2019-07-19 16:07 ` Eric W. Biederman
2019-04-09 3:39 ` [PATCH ghak90 V6 03/10] audit: read container ID of a process Richard Guy Briggs
2019-07-19 16:03 ` Eric W. Biederman
2019-07-19 17:05 ` Richard Guy Briggs
2019-04-09 3:39 ` [PATCH ghak90 V6 04/10] audit: log container info of syscalls Richard Guy Briggs
2019-05-29 22:15 ` Paul Moore
2019-05-30 13:08 ` Ondrej Mosnacek
2019-05-30 14:08 ` Richard Guy Briggs
2019-05-30 14:34 ` Paul Moore
2019-04-09 3:39 ` [PATCH ghak90 V6 05/10] audit: add contid support for signalling the audit daemon Richard Guy Briggs
2019-04-09 12:57 ` Ondrej Mosnacek
2019-04-09 13:40 ` Paul Moore
2019-04-09 13:48 ` Neil Horman
2019-04-09 14:00 ` Ondrej Mosnacek
2019-04-09 14:07 ` Paul Moore
2019-04-09 13:53 ` Richard Guy Briggs
2019-04-09 14:08 ` Paul Moore [this message]
2019-04-09 13:46 ` Neil Horman
2019-04-09 3:39 ` [PATCH ghak90 V6 06/10] audit: add support for non-syscall auxiliary records Richard Guy Briggs
2019-04-09 3:39 ` [PATCH ghak90 V6 07/10] audit: add containerid support for user records Richard Guy Briggs
2019-04-09 3:39 ` [PATCH ghak90 V6 08/10] audit: add containerid filtering Richard Guy Briggs
2019-05-29 22:16 ` Paul Moore
2019-05-30 14:19 ` Richard Guy Briggs
2019-05-30 14:34 ` Paul Moore
2019-05-30 20:37 ` Richard Guy Briggs
2019-05-30 20:45 ` Paul Moore
2019-05-30 21:10 ` Richard Guy Briggs
2019-04-09 3:39 ` [PATCH ghak90 V6 09/10] audit: add support for containerid to network namespaces Richard Guy Briggs
2019-05-29 22:17 ` Paul Moore
2019-05-30 14:15 ` Richard Guy Briggs
2019-05-30 14:32 ` Paul Moore
2019-04-09 3:39 ` [PATCH ghak90 V6 10/10] audit: NETFILTER_PKT: record each container ID associated with a netNS Richard Guy Briggs
2019-04-11 11:31 ` [PATCH ghak90 V6 00/10] audit: implement container identifier Richard Guy Briggs
2019-04-22 11:38 ` Neil Horman
2019-04-22 13:49 ` Paul Moore
2019-04-23 10:28 ` Neil Horman
2019-05-28 21:53 ` Daniel Walsh
2019-05-28 22:25 ` Richard Guy Briggs
2019-05-28 22:26 ` Paul Moore
2019-05-28 23:00 ` Steve Grubb
2019-05-29 0:43 ` Richard Guy Briggs
2019-05-29 12:02 ` Daniel Walsh
2019-05-29 13:17 ` Paul Moore
2019-05-29 14:07 ` Daniel Walsh
2019-05-29 14:33 ` Paul Moore
2019-05-29 13:14 ` Paul Moore
2019-05-29 22:26 ` Paul Moore
2019-05-30 13:08 ` Steve Grubb
2019-05-30 13:35 ` Paul Moore
2019-05-30 14:08 ` Richard Guy Briggs
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