linux-kernel - Re: [RFC PATCH ghak32 V2 01/13] audit: add container id

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Message-ID: <20180518113825.4ceeadf6@ivy-bridge>
Date:   Fri, 18 May 2018 11:38:25 -0400
From:   Steve Grubb <sgrubb@...hat.com>
To:     Richard Guy Briggs <rgb@...hat.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, ebiederm@...ssion.com, luto@...nel.org,
        jlayton@...hat.com, carlos@...hat.com, dhowells@...hat.com,
        viro@...iv.linux.org.uk, simo@...hat.com, eparis@...isplace.org,
        serge@...lyn.com
Subject: Re: [RFC PATCH ghak32 V2 01/13] audit: add container id

On Fri, 18 May 2018 11:21:06 -0400
Richard Guy Briggs <rgb@...hat.com> wrote:

> On 2018-05-18 09:56, Steve Grubb wrote:
> > On Thu, 17 May 2018 17:56:00 -0400
> > Richard Guy Briggs <rgb@...hat.com> wrote:
> >   
> > > > During syscall events, the path info is returned in a a record
> > > > simply called AUDIT_PATH, cwd info is returned in AUDIT_CWD. So,
> > > > rather than calling the record that gets attached to everything
> > > > AUDIT_CONTAINER_INFO, how about simply AUDIT_CONTAINER.    
> > > 
> > > Considering the container initiation record is different than the
> > > record to document the container involved in an otherwise normal
> > > syscall, we need two names.  I don't have a strong opinion what
> > > they are.
> > > 
> > > I'd prefer AUDIT_CONTAIN and AUDIT_CONTAINER_INFO so that the two
> > > are different enough to be visually distinct while leaving
> > > AUDIT_CONTAINERID for the field type in patch 4 ("audit: add
> > > containerid filtering")  
> 
> (Sorry, I had intended AUDIT_CONTAINER for the first in that paragraph
> above.)
> 
> > How about AUDIT_CONTAINER for the auxiliary record? The one that
> > starts the container, I don't have a strong opinion on. Could be
> > AUDIT_CONTAINER_INIT, AUDIT_CONTAINER_START, AUDIT_CONTAINERID,
> > AUDIT_CONTAINER_ID, or something else. The API call that sets the ID
> > for filtering could be AUDIT_CID or AUDIT_CONTID if that helps
> > decide what the initial event might be. Normally, it should match
> > the field being filtered.  
> 
> Ok, I had shortened the record field name to "contid=" to be unique
> enough while not using too much netlink bandwidth.  I could have used
> "cid=" but that could be unobvious or ambiguous.  I didn't want to use
> the full "containerid=" due to that.  I suppose I could change the
> field name macro to AUDIT_CONTID.
> 
> For the one that starts the container, I'd prefer to leave the name a
> bit more general than "_INIT", "_START", so maybe I'll swap them
> around and use AUDIT_CONTAINER_INFO for the startup record, and use
> AUDIT_CONTAINER for the syscall auxiliary record.
> 
> Does that work?

I'll go along with that. Thanks. But making that swap frees up
AUDIT_CONTAINER_ID which could be the first event. But
AUDIT_CONTAINER_INFO is also fine with me.

Best Regards,
-Steve