linux-kernel - Re: [RFC][PATCH v1 0/2] integrity: module integrity verification

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Message-ID: <8762fhgq3y.fsf@rustcorp.com.au>
Date:	Thu, 09 Feb 2012 04:32:57 +1030
From:	Rusty Russell <rusty@...abs.org>
To:	"Kasatkin\, Dmitry" <dmitry.kasatkin@...el.com>,
	Mimi Zohar <zohar@...ux.vnet.ibm.com>
Cc:	James Morris <jmorris@...ei.org>,
	linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org, David Howells <dhowells@...hat.com>,
	Lucas De Marchi <lucas.demarchi@...fusion.mobi>,
	Jon Masters <jcm@...hat.com>
Subject: Re: [RFC][PATCH v1 0/2] integrity: module integrity verification

On Wed, 8 Feb 2012 16:02:28 +0200, "Kasatkin, Dmitry" <dmitry.kasatkin@...el.com> wrote:
> On Wed, Feb 8, 2012 at 3:45 PM, Mimi Zohar <zohar@...ux.vnet.ibm.com> wrote:
> > On Wed, 2012-02-08 at 10:09 +1030, Rusty Russell wrote:
> >> The problem is that distributions tend to have two variants of modules:
> >> stripped and unstripped.  Thus you may want to support multiple
> >> signatures, any *one* of which may match.
> >>
> >> I've cc'd the module-init-tools and libkmod maintainers for their
> >> comments, too.
> > Hi Rusty,
> >
> > As a distro knows what it is shipping, why would you need support for
> > both stripped/unstripped versions.  Unless "stripping" occurs post
> > install.  Perhaps something similar to 'prelink'?
> 
> How are they distributed? In separate packages?
> And striped during package creation?
> Then during package building, before archiving, signing tool is simply
> invoked for each binary package,
> so "same" modules from different packages will get own signature.
> 
> Or it goes some other way?

I don't know.  Perhaps it isn't an issue; David Howells and Jon Masters
might have comments.

Cheers,
Rusty.
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