[Libvir] Remote patch 2007-04-17 (for discussion only)

Attached is the latest remote patch which should apply against either CVS or the just-released libvirt-0.2.2. It's only for discussion because it's not quite complete yet. This patch includes Dan's QEMUD/XDR patch. And it basically follows the plan outlined in [1]. Problems: * QEMUD deadlocks when you try to call qemu over remote (eg. try: virsh -c qemu+unix:///system?socket=/path/to/libvirt/qemud-sock capabilities). This is because qemud tries to connect back to itself, but it is in the middle of handling the request, so it doesn't respond. * Opening Xen over remote fails, because the Xen unified driver doesn't understand URLs like xen:///. I'm not sure if it ever did, or if this is a regresssion, but it certainly _ought_ to support this style of URLs. * The server will quite happily answer a mixture of remote and qemud requests even on the same connection (of course, libvirt would never generate such a mix). I'm not sure if this is a problem. To do: * Only supports a small subset of calls (not difficult to do but I'm trying to get the framework working first). * Needs GnuTLS support on the server side (copy & paste of the code from the old remote patch). * Needs to support TCP sockets on the server side. Rich. [1] https://www.redhat.com/archives/libvir-list/2007-March/msg00333.html -- Emerging Technologies, Red Hat http://et.redhat.com/~rjones/ 64 Baker Street, London, W1U 7DF Mobile: +44 7866 314 421 Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 Directors: Michael Cunningham (USA), Charlie Peters (USA) and David Owens (Ireland)