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Date: Thu, 7 Jul 2005 17:51:36 -0500
From: serue@us.ibm.com
To: "Timothy R. Chavez" <tinytim@us.ibm.com>
Cc: Arjan van de Ven <arjan@infradead.org>, Steve Grubb <sgrubb@redhat.com>,
       Greg KH <greg@kroah.com>, Andrew Morton <akpm@osdl.org>,
       linux-audit@redhat.com, linux-fsdevel@vger.kernel.org,
       linux-kernel@vger.kernel.org, David Woodhouse <dwmw2@infradead.org>,
       Mounir Bsaibes <mbsaibes@us.ibm.com>, Serge Hallyn <serue@us.ibm.com>,
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       Daniel H Jones <danjones@us.ibm.com>, Amy Griffis <amy.griffis@hp.com>,
       Maneesh Soni <maneesh@in.ibm.com>
Subject: Re: [PATCH] audit: file system auditing based on location and name
Message-ID: <20050707225136.GA27099@serge.austin.ibm.com>
References: <1120668881.8328.1.camel@localhost> <200507071548.37996.sgrubb@redhat.com> <1120771909.3198.32.camel@laptopd505.fenrus.org> <200507071708.32451.tinytim@us.ibm.com>
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Quoting Timothy R. Chavez (tinytim@us.ibm.com):
> On Thursday 07 July 2005 16:31, Arjan van de Ven wrote:
> > On Thu, 2005-07-07 at 15:48 -0400, Steve Grubb wrote:
> > 
> > > Tim's code lets you say I want change notification to this file only. The 
> > > notification follows the audit format with all relavant pieces of information 
> > > gathered at the time of the event and serialized with all other events.
> > 
> > well can't you sort of do that based on (selinux) security context of
> > the file already? after all that's part of the inode already. Isn't that
> > finegrained enough?
> > 
> 
> Provided you make it that far, yes, SE Linux _could_ be used to provide
> similar functionality.  But, what if you bottom out on a DAC decision?
> 
> [foo@liltux /]$ cat /etc/shadow
> cat: /etc/shadow: Permission denied

Additionally, the apps would need to either be rewritten to create
the files under the audited context, or policy would have to cause all
files created by those apps to be under the audited context.  Neither
one of those options is satisfactory.

thanks,
-serge