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From: Richard Guy Briggs <rgb@redhat.com>
To: Steve Grubb <sgrubb@redhat.com>
Cc: nhorman@tuxdriver.com, linux-api@vger.kernel.org,
	containers@lists.linux-foundation.org,
	LKML <linux-kernel@vger.kernel.org>,
	dhowells@redhat.com, linux-audit@redhat.com,
	netfilter-devel@vger.kernel.org, ebiederm@xmission.com,
	simo@redhat.com, netdev@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, Eric Paris <eparis@parisplace.org>,
	mpatel@redhat.com, Serge Hallyn <serge@hallyn.com>
Subject: Re: [PATCH ghak90 V9 05/13] audit: log container info of syscalls
Date: Wed, 21 Oct 2020 13:53:03 -0400
Message-ID: <20201021175303.GH2882171@madcap2.tricolour.ca> (raw)
In-Reply-To: <2174083.ElGaqSPkdT@x2>

On 2020-10-21 12:49, Steve Grubb wrote:
> On Wednesday, October 21, 2020 12:39:26 PM EDT Richard Guy Briggs wrote:
> > > I think I have a way to generate a signal to multiple targets in one
> > > syscall...  The added challenge is to also give those targets different
> > > audit container identifiers.
> > 
> > Here is an exmple I was able to generate after updating the testsuite
> > script to include a signalling example of a nested audit container
> > identifier:
> > 
> > ----
> > type=PROCTITLE msg=audit(2020-10-21 10:31:16.655:6731) :
> > proctitle=/usr/bin/perl -w containerid/test type=CONTAINER_ID
> > msg=audit(2020-10-21 10:31:16.655:6731) :
> > contid=7129731255799087104^3333941723245477888 type=OBJ_PID
> > msg=audit(2020-10-21 10:31:16.655:6731) : opid=115583 oauid=root ouid=root
> > oses=1 obj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
> > ocomm=perl type=CONTAINER_ID msg=audit(2020-10-21 10:31:16.655:6731) :
> > contid=3333941723245477888 type=OBJ_PID msg=audit(2020-10-21
> > 10:31:16.655:6731) : opid=115580 oauid=root ouid=root oses=1
> > obj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 ocomm=perl
> > type=CONTAINER_ID msg=audit(2020-10-21 10:31:16.655:6731) :
> > contid=8098399240850112512^3333941723245477888 type=OBJ_PID
> > msg=audit(2020-10-21 10:31:16.655:6731) : opid=115582 oauid=root ouid=root
> > oses=1 obj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
> > ocomm=perl type=SYSCALL msg=audit(2020-10-21 10:31:16.655:6731) :
> > arch=x86_64 syscall=kill success=yes exit=0 a0=0xfffe3c84 a1=SIGTERM
> > a2=0x4d524554 a3=0x0 items=0 ppid=115564 pid=115567 auid=root uid=root
> > gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root
> > tty=ttyS0 ses=1 comm=perl exe=/usr/bin/perl
> > subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
> > key=testsuite-1603290671-AcLtUulY ----
> > 
> > There are three CONTAINER_ID records which need some way of associating
> > with OBJ_PID records.  An additional CONTAINER_ID record would be present
> > if the killing process itself had an audit container identifier.  I think
> > the most obvious way to connect them is with a pid= field in the
> > CONTAINER_ID record.
> 
> pid is the process sending the signal, opid is the process receiving the 
> signal. I think you mean opid?

If the process sending the signal (it has a pid= field) has an audit
container identifier, it will generate a CONTAINER_ID record.  Each
process being signalled (each has an opid= field) that has an audit
container identifier will also generate a CONTAINER_ID record.  The
former will be much more common.  Which do we use in the CONTAINER_ID
record?  Having swinging fields, pid vs opid does not seem like a
reasonable solution.  Do we go back to "ref=pid=..." vs "ref=opid=..."?

> -Steve

- RGB

--
Richard Guy Briggs <rgb@redhat.com>
Sr. S/W Engineer, Kernel Security, Base Operating Systems
Remote, Ottawa, Red Hat Canada
IRC: rgb, SunRaycer
Voice: +1.647.777.2635, Internal: (81) 32635

--
Linux-audit mailing list
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https://www.redhat.com/mailman/listinfo/linux-audit


  reply index

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-27 13:20 [PATCH ghak90 V9 00/13] audit: implement container identifier Richard Guy Briggs
2020-06-27 13:20 ` [PATCH ghak90 V9 01/13] audit: collect audit task parameters Richard Guy Briggs
2020-07-05 15:09   ` Paul Moore
2020-07-07  2:50     ` Richard Guy Briggs
2020-07-08  1:42       ` Paul Moore
2020-07-13 20:29         ` Richard Guy Briggs
2020-07-14  0:44           ` Paul Moore
2020-06-27 13:20 ` [PATCH ghak90 V9 02/13] audit: add container id Richard Guy Briggs
2020-07-04 13:29   ` Paul Moore
2020-07-04 13:30     ` Paul Moore
2020-07-05 15:09   ` Paul Moore
2020-07-29 20:05     ` Richard Guy Briggs
2020-08-21 19:36       ` Paul Moore
2020-06-27 13:20 ` [PATCH ghak90 V9 03/13] audit: read container ID of a process Richard Guy Briggs
2020-06-27 13:20 ` [PATCH ghak90 V9 04/13] audit: log drop of contid on exit of last task Richard Guy Briggs
2020-07-05 15:10   ` Paul Moore
2020-06-27 13:20 ` [PATCH ghak90 V9 05/13] audit: log container info of syscalls Richard Guy Briggs
2020-07-05 15:10   ` Paul Moore
2020-07-29 19:40     ` Richard Guy Briggs
2020-08-21 19:15       ` Paul Moore
2020-10-02 19:52         ` Richard Guy Briggs
2020-10-21 16:39           ` Richard Guy Briggs
2020-10-21 16:49             ` Steve Grubb
2020-10-21 17:53               ` Richard Guy Briggs [this message]
2020-10-23  1:21             ` Paul Moore
2020-10-23 20:40               ` Richard Guy Briggs
2020-10-28  1:35                 ` Paul Moore
2020-06-27 13:20 ` [PATCH ghak90 V9 06/13] audit: add contid support for signalling the audit daemon Richard Guy Briggs
2020-07-05 15:10   ` Paul Moore
2020-07-29 19:00     ` Richard Guy Briggs
2020-08-21 18:48       ` Paul Moore
2020-10-02 19:25         ` Richard Guy Briggs
2020-06-27 13:20 ` [PATCH ghak90 V9 07/13] audit: add support for non-syscall auxiliary records Richard Guy Briggs
2020-07-05 15:11   ` Paul Moore
2020-06-27 13:20 ` [PATCH ghak90 V9 08/13] audit: add containerid support for user records Richard Guy Briggs
2020-07-05 15:11   ` Paul Moore
2020-07-18  0:43     ` Richard Guy Briggs
2020-08-21 18:34       ` Paul Moore
2020-06-27 13:20 ` [PATCH ghak90 V9 09/13] audit: add containerid filtering Richard Guy Briggs
2020-06-27 13:20 ` [PATCH ghak90 V9 10/13] audit: add support for containerid to network namespaces Richard Guy Briggs
2020-07-05 15:11   ` Paul Moore
2020-07-21 22:05     ` Richard Guy Briggs
2020-06-27 13:20 ` [PATCH ghak90 V9 11/13] audit: contid check descendancy and nesting Richard Guy Briggs
2020-07-05 15:11   ` Paul Moore
2020-08-07 17:10     ` Richard Guy Briggs
2020-08-21 20:13       ` Paul Moore
2020-10-06 20:03         ` Richard Guy Briggs
2020-06-27 13:20 ` [PATCH ghak90 V9 12/13] audit: track container nesting Richard Guy Briggs
2020-07-05 15:11   ` Paul Moore
2020-06-27 13:20 ` [PATCH ghak90 V9 13/13] audit: add capcontid to set contid outside init_user_ns Richard Guy Briggs
2020-07-05 15:11   ` Paul Moore

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