linux-kernel - Re: [dm-devel] [RFC PATCH v5 00/11] Integrity Policy Enforcement LSM (IPE)

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Message-ID: <268edec96cbe7d2626c9158b806e8865b6b1b8ed.camel@linux.ibm.com>
Date:   Fri, 07 Aug 2020 14:40:54 -0400
From:   Mimi Zohar <zohar@...ux.ibm.com>
To:     James Morris <jmorris@...ei.org>
Cc:     James Bottomley <James.Bottomley@...senPartnership.com>,
        Deven Bowers <deven.desai@...ux.microsoft.com>,
        Pavel Machek <pavel@....cz>, Sasha Levin <sashal@...nel.org>,
        snitzer@...hat.com, dm-devel@...hat.com,
        tyhicks@...ux.microsoft.com, agk@...hat.com, paul@...l-moore.com,
        corbet@....net, nramas@...ux.microsoft.com, serge@...lyn.com,
        pasha.tatashin@...een.com, jannh@...gle.com,
        linux-block@...r.kernel.org, viro@...iv.linux.org.uk,
        axboe@...nel.dk, mdsakib@...rosoft.com,
        linux-kernel@...r.kernel.org, eparis@...hat.com,
        linux-security-module@...r.kernel.org, linux-audit@...hat.com,
        linux-fsdevel@...r.kernel.org, linux-integrity@...r.kernel.org,
        jaskarankhurana@...ux.microsoft.com
Subject: Re: [dm-devel] [RFC PATCH v5 00/11] Integrity Policy Enforcement
 LSM (IPE)

On Fri, 2020-08-07 at 13:31 -0400, Mimi Zohar wrote:
> On Sat, 2020-08-08 at 02:41 +1000, James Morris wrote:
> > On Thu, 6 Aug 2020, Mimi Zohar wrote:
> > 
> > > On Thu, 2020-08-06 at 09:51 +1000, James Morris wrote:
> > > > On Wed, 5 Aug 2020, Mimi Zohar wrote:
> > > > 
> > > > > If block layer integrity was enough, there wouldn't have been a need
> > > > > for fs-verity.   Even fs-verity is limited to read only filesystems,
> > > > > which makes validating file integrity so much easier.  From the
> > > > > beginning, we've said that fs-verity signatures should be included in
> > > > > the measurement list.  (I thought someone signed on to add that support
> > > > > to IMA, but have not yet seen anything.)
> > > > > 
> > > > > Going forward I see a lot of what we've accomplished being incorporated
> > > > > into the filesystems.  When IMA will be limited to defining a system
> > > > > wide policy, I'll have completed my job.
> > > > 
> > > > What are your thoughts on IPE being a standalone LSM? Would you prefer to 
> > > > see its functionality integrated into IMA?
> > > 
> > > Improving the integrity subsystem would be preferred.
> > > 
> > 
> > Are you planning to attend Plumbers? Perhaps we could propose a BoF 
> > session on this topic.
> 
> That sounds like a good idea.

Other than it is already sold out.

Mimi