linux-kernel - Re: [PATCH V6 05/10] audit: log creation and deletion of namespace instances

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Message-ID: <4153072.0EnVzNaVVH@x2>
Date:	Fri, 15 May 2015 08:38:04 -0400
From:	Steve Grubb <sgrubb@...hat.com>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	Richard Guy Briggs <rgb@...hat.com>,
	Paul Moore <pmoore@...hat.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Linux Containers <containers@...ts.linux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-audit@...hat.com, Eric Paris <eparis@...isplace.org>,
	arozansk@...hat.com, "Serge E. Hallyn" <serge@...lyn.com>,
	Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	Linux FS Devel <linux-fsdevel@...r.kernel.org>,
	Linux API <linux-api@...r.kernel.org>,
	Network Development <netdev@...r.kernel.org>
Subject: Re: [PATCH V6 05/10] audit: log creation and deletion of namespace instances

On Thursday, May 14, 2015 11:23:09 PM Andy Lutomirski wrote:
> On Thu, May 14, 2015 at 7:32 PM, Richard Guy Briggs <rgb@...hat.com> wrote:
> > On 15/05/14, Paul Moore wrote:
> >> * Look at our existing audit records to determine which records should
> >> have
> >> namespace and container ID tokens added.  We may only want to add the
> >> additional fields in the case where the namespace/container ID tokens are
> >> not the init namespace.
> > 
> > If we have a record that ties a set of namespace IDs with a container
> > ID, then I expect we only need to list the containerID along with auid
> > and sessionID.
> 
> The problem here is that the kernel has no concept of a "container", and I
> don't think it makes any sense to add one just for audit.  "Container" is a
> marketing term used by some userspace tools.

No, its a real thing just like a login. Does the kernel have any concept of a 
login? Yet it happens. And it causes us to generate events describing who, 
where from, role, success, and time of day. :-)


> I can imagine that both audit could benefit from a concept of a
> namespace *path* that understands nesting (e.g. root/2/5/1 or
> something along those lines).  Mapping these to "containers" belongs
> in userspace, I think.

I don't doubt that just as user space sequences the actions that are a login. 
I just need the kernel to do some book keeping and associate the necessary 
attributes in the event record to be able to reconstruct what is actually 
happening.

-Steve
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