[libvirt] [PATCHv2] qemu: Do fake auto-allocation of ports when generating native command

[Daniel P. Berrange]

On Mon, Apr 29, 2013 at 02:48:54PM +0200, Michal Privoznik wrote:
> On 29.04.2013 14:42, Peter Krempa wrote:
> > When attempting to generate the native command line from an XML file
> > that uses graphics port auto allocation, the generated commandline
> > wouldn't be valid.
> > 
> > This patch adds fake autoallocation of ports as done when starting the
> > actual machine.
> > ---
> >  src/qemu/qemu_driver.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++
> >  1 file changed, 52 insertions(+)
> > 
> > diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
> > index 2d3b24a..068d6c4 100644
> > --- a/src/qemu/qemu_driver.c
> > +++ b/src/qemu/qemu_driver.c
> > @@ -5271,6 +5271,58 @@ static char *qemuConnectDomainXMLToNative(virConnectPtr conn,
> ...
> > +
> > +            if (needPort || graphics->data.spice.port == -1)
> > +                graphics->data.spice.port = 5901;
> > +
> > +            if (needTLSPort || graphics->data.spice.tlsPort == -1)
> > +                graphics->data.spice.tlsPort = 5902;
> 
> Shouldn't we be using virPortAllocator to set these ports instead of
> hardcoding these values? What if these ports are already taken (by
> previously started domain for instance)?

Ensuring the ports are not in use, is outside the scope of the XMLToNative
API, so I think hardcoding them is correct.


Daniel
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