Re: [Qemu-devel] [PATCH v3 5/6] docs: start a document to describe D-Bus usage

["Dr. David Alan Gilbert" <dgilbert@redhat.com>]

* Marc-André Lureau (marcandre.lureau@gmail.com) wrote:
> Hi
> 
> On Mon, Sep 16, 2019 at 5:15 PM Dr. David Alan Gilbert
> <dgilbert@redhat.com> wrote:
> >
> > * Marc-André Lureau (marcandre.lureau@gmail.com) wrote:
> > > Hi
> > >
> > > On Mon, Sep 16, 2019 at 2:02 PM Dr. David Alan Gilbert
> > > <dgilbert@redhat.com> wrote:
> > > >
> > > > (Copying in Stefan since he was looking at DBus for virtiofs)
> > > >
> > > > * Marc-André Lureau (marcandre.lureau@redhat.com) wrote:
> > > > > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>

<snip>

> > > Do you have a specific question we can answer or guide for qemu? Is
> > > there something we have to document or implement?
> > >
> > > Since qemu is not managing the extra processes or applying policies, I
> > > don't know what else could be done. From qemu pov, it can rely on
> > > management layer to trust the bus and the helpers, similar to trusting
> > > the system in general.
> >
> > Well pretty much the same questions I asked in the discussion on v2;
> > what is the supported configuration to ensure that one helper that's
> > been compromised can't attack the others and qemu?
> 
> I thought I gave the answer to that question above. What is missing? I
> don't think one can generalize it here, it will be a case by case for
> each helper, how they interact with each other and qemu.

I think we need an example of how to lock it down; i.e. to allow a
helper to provide migration data but not to be able to speak to other
helpers.

Dave

> >
> > Dave
> >
> > > > Dave
> > > >
> > > > > +Guidelines
> > > > > +==========
> > > > > +
> > > > > +When implementing new D-Bus interfaces, it is recommended to follow
> > > > > +the "D-Bus API Design Guidelines":
> > > > > +https://dbus.freedesktop.org/doc/dbus-api-design.html
> > > > > +
> > > > > +The "org.qemu*" prefix is reserved for the QEMU project.
> > > > > diff --git a/docs/interop/index.rst b/docs/interop/index.rst
> > > > > index b4bfcab417..fa4478ce2e 100644
> > > > > --- a/docs/interop/index.rst
> > > > > +++ b/docs/interop/index.rst
> > > > > @@ -13,6 +13,7 @@ Contents:
> > > > >     :maxdepth: 2
> > > > >
> > > > >     bitmaps
> > > > > +   dbus
> > > > >     live-block-operations
> > > > >     pr-helper
> > > > >     vhost-user
> > > > > --
> > > > > 2.23.0
> > > > >
> > > > --
> > > > Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
> > > >
> > >
> > >
> > > --
> > > Marc-André Lureau
> > --
> > Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
> 
> 
> 
> -- 
> Marc-André Lureau
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK