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Re: [Xen-devel] [PATCH] [Xend] Move some backend configuration

To: "Daniel P. Berrange" <berrange@xxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] [Xend] Move some backend configuration
From: John Levon <levon@xxxxxxxxxxxxxxxxx>
Date: Tue, 30 Sep 2008 17:39:43 +0100
Cc: Pascal Bouchareine <pascal@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
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On Tue, Sep 30, 2008 at 05:35:52PM +0100, Daniel P. Berrange wrote:

> On Tue, Sep 30, 2008 at 05:09:21PM +0100, Keir Fraser wrote:
> > On 30/9/08 16:30, "Daniel P. Berrange" <berrange@xxxxxxxxxx> wrote:
> > 
> > > Console data
> > > 
> > >  /local/domain/%d/console/vnc-port
> > >  /local/domain/%d/console/tty
> > 
> > Duplicating this pair of nodes sounds fine to me, *but* then libvirt is
> > simply remaining vulnerable to the kind of attack we're are looking to
> > avoid? Can any good really come from keeping the old locations?
> Given that this is security sensitive, I have no objection to updating
> libvirt to read from the new locations. The only thing I need to work 
> out is a reliable way to choose when to use the new location, vs the 
> looking at old location (for compat with existing deployments). 

I think the existence of /vm_path would do that, but we need to move
*all* this stuff, surely. /local/domain/X/ should be effectively
write-only from dom0 since none of it is trustworthy.


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