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xen-devel
Re: [Xen-devel] [PATCH 08 of 27 v2] libxl: do not read f.e. xenstore dir
On Mon, 2011-10-17 at 15:20 +0100, Ian Jackson wrote:
> Ian Campbell writes ("[Xen-devel] [PATCH 08 of 27 v2] libxl: do not read f.e.
> xenstore dir in disk list function"):
> > libxl: do not read f.e. xenstore dir in disk list function
> >
> > Instead store a duplicate of the "device-type" node in the backend dir
> > and use that instead.
> >
> > This maintains the invariant that the list function is always "safe".
> >
> > XXX I'm not sure this is an actual issue. The entries in the frontend device
> > XXX area are writeable by the guest but maybe the solution is to
> > restrict that ?
>
> No, I don't think so. The frontend directory is precisely where the
> frontend writes things that it wants the backend to be able to read
> but the backend shouldn't rely on it for its own operation.
So you agree with the patch and not with my vacillating WRT whether it
is necessary?
Ian.
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