linux-kernel - Re: [RFC PATCH V1 00/12] audit: implement container id

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Message-ID: <20180305033128.6sqreoo5olqwq5og@madcap2.tricolour.ca>
Date:   Sun, 4 Mar 2018 22:31:28 -0500
From:   Richard Guy Briggs <rgb@...hat.com>
To:     Mimi Zohar <zohar@...ux.vnet.ibm.com>
Cc:     cgroups@...r.kernel.org, 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, mszeredi@...hat.com, ebiederm@...ssion.com,
        simo@...hat.com, jlayton@...hat.com, carlos@...hat.com,
        dhowells@...hat.com, viro@...iv.linux.org.uk, luto@...nel.org,
        eparis@...isplace.org, trondmy@...marydata.com, serge@...lyn.com
Subject: Re: [RFC PATCH V1 00/12] audit: implement container id

On 2018-03-04 16:55, Mimi Zohar wrote:
> On Thu, 2018-03-01 at 14:41 -0500, Richard Guy Briggs wrote:
> > Implement audit kernel container ID.
> > 
> > This patchset is a preliminary RFC based on the proposal document (V3)
> > posted:
> > 	https://www.redhat.com/archives/linux-audit/2018-January/msg00014.html
> > 
> > The first patch implements the proc fs write to set the audit container
> > ID of a process, emitting an AUDIT_CONTAINER record.
> > 
> > The second implements an auxiliary syscall record AUDIT_CONTAINER_INFO
> > if a container ID is present on a task.
> > 
> > The third adds filtering to the exit, exclude and user lists.
> > 
> > The 4th, implements reading the container ID from the proc filesystem
> > for debugging.  This isn't planned for upstream inclusion.
> > 
> > The 5th adds signal and ptrace support.
> > 
> > The 6th attempts to create a local audit context to be able to bind a
> > standalone record with the container ID record.
> > 
> > The 7th, 8th, 9th, 10th patches add container ID records to standalone
> > records.  Some of these may end up being syscall auxiliary records and
> > won't need this specific support since they'll be supported via
> > syscalls.
> > 
> > The 11th is a temporary workaround due to the AUDIT_CONTAINER records
> > not showing up as do AUDIT_LOGIN records.  I suspect this is due to its
> > range (1000 vs 1300), but the intent is to solve it.
> > 
> > The 12th adds debug information not intended for upstream for those
> > brave souls wanting to tinker with it in this early state.
> > 
> > Feedback please!
> 
> Which tree can this patch set be applied to?

git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit.git next

> Mimi
> 
> > Here's a quick and dirty test script:
> > echo 123455 > /proc/$$/containerid; echo $?
> > sleep 4&  
> > child=$!; sleep 1
> > echo 18446744073709551615 > /proc/$child/containerid; echo $?
> > echo 123456 > /proc/$child/containerid; echo $?
> > echo 123457 > /proc/$child/containerid; echo $?
> > sleep 1
> > ausearch -ts recent |grep " contid=18446744073709551615"; echo $?
> > ausearch -ts recent |grep " contid=123456"; echo $?
> > ausearch -ts recent |grep " contid=123457"; echo $?
> > echo self:$$ contid:$( cat /proc/$$/containerid)
> > echo child:$child contid:$( cat /proc/$child/containerid)
> > 
> > containerid=123458
> > key=tmpcontainerid
> > auditctl -a exit,always -F dir=/tmp -F perm=wa -F containerid=$containerid -F key=$key || echo failed to add containerid filter rule
> > bash -c "sleep 1; echo test > /tmp/$key"&
> > child=$!
> > echo $containerid > /proc/$child/containerid
> > sleep 2
> > rm -f /tmp/$key
> > ausearch -ts recent -k $key || echo failed to find CONTAINER_INFO record
> > auditctl -d exit,always -F dir=/tmp -F perm=wa -F containerid=$containerid -F key=$key || echo failed to add containerid filter rule
> > 
> > See:
> > 	https://github.com/linux-audit/audit-kernel/issues/32
> > 	https://github.com/linux-audit/audit-userspace/issues/40
> > 	https://github.com/linux-audit/audit-testsuite/issues/64
> > 
> > Richard Guy Briggs (12):
> >   audit: add container id
> >   audit: log container info of syscalls
> >   audit: add containerid filtering
> >   audit: read container ID of a process
> >   audit: add containerid support for ptrace and signals
> >   audit: add support for non-syscall auxiliary records
> >   audit: add container aux record to watch/tree/mark
> >   audit: add containerid support for tty_audit
> >   audit: add containerid support for config/feature/user records
> >   audit: add containerid support for seccomp and anom_abend records
> >   debug audit: add container id
> >   debug! audit: add container id
> > 
> >  drivers/tty/tty_audit.c    |   5 +-
> >  fs/proc/base.c             |  63 +++++++++++++++++++
> >  include/linux/audit.h      |  36 +++++++++++
> >  include/linux/init_task.h  |   4 +-
> >  include/linux/sched.h      |   1 +
> >  include/uapi/linux/audit.h |   9 ++-
> >  kernel/audit.c             |  74 +++++++++++++++++++---
> >  kernel/audit.h             |   3 +
> >  kernel/audit_fsnotify.c    |   5 +-
> >  kernel/audit_tree.c        |   5 +-
> >  kernel/audit_watch.c       |  33 +++++-----
> >  kernel/auditfilter.c       |  52 ++++++++++++++-
> >  kernel/auditsc.c           | 154 +++++++++++++++++++++++++++++++++++++++++++--
> >  13 files changed, 408 insertions(+), 36 deletions(-)
> > 
> 

- RGB

--
Richard Guy Briggs <rgb@...hat.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