[Xen-devel] [PATCH] ioemu: Get guest uuid from xenstore

[Yosuke Iwamatsu <y-iwamatsu@xxxxxxxxxxxxx>]

Keir Fraser wrote:
> On 19/01/2009 18:02, "Ian Jackson" <Ian.Jackson@xxxxxxxxxxxxx> wrote:
>
> > I don't think this patch is safe.  /local/domain/<domid>/vm is
> > owned by (and thus writeable by) the domain in question.  We need a
> > trustworthy copy of this information.
> Perhaps worth checking with a xenstore-ls -p, or a xenstore-write attempt
> within a domU, but the vm node should be owned by dom0 and read-only by the
> domU. The recent xenstore permissions fixes should ensure that.
>
> So the patch should be safe and if it's not it's a xend bug that needs
> fixing.
I checked with 'xenstore-ls -p' on my system and could confirm that
the permission of /local/domain/<domid>/vm was set properly
(owned by dom0 and set read-only by domU), apparently since cs 18933.

Thanks,
  Yosuke



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