[libvirt] [PATCH 1/2] qemu: Support SPICE listen over unix socket

[Cole Robinson]

On 03/22/2016 04:59 AM, Pavel Hrdina wrote:
> On Tue, Mar 22, 2016 at 09:49:34AM +0100, Christophe Fergeau wrote:
>> Hey,
>>
>> On Tue, Mar 22, 2016 at 09:13:44AM +0100, Pavel Hrdina wrote:
>>> On Mon, Mar 21, 2016 at 07:30:44PM -0400, Cole Robinson wrote:
>>>> Add support for SPICE listen over unix socket. This has been in qemu
>>>> since v2.3. The XML is:
>>>>
>>>>   <spice socket='/path/to/socket'/>
>>>>
>>>> Which matches support for VNC listen over unix socket.
>>>>
>>>> https://bugzilla.redhat.com/show_bug.cgi?id=1151761
>>
>>>> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-unix.xml b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-unix.xml
>>>> new file mode 100644
>>>> index 0000000..6c6be44
>>>> --- /dev/null
>>>> +++ b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-unix.xml
>>>> @@ -0,0 +1,27 @@
>>>> +<domain type='qemu'>
>>>> +  <name>QEMUGuest1</name>
>>>> +  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
>>>> +  <memory unit='KiB'>219136</memory>
>>>> +  <currentMemory unit='KiB'>219136</currentMemory>
>>>> +  <vcpu placement='static'>1</vcpu>
>>>> +  <os>
>>>> +    <type arch='i686' machine='pc'>hvm</type>
>>>> +    <boot dev='hd'/>
>>>> +  </os>
>>>> +  <clock offset='utc'/>
>>>> +  <on_poweroff>destroy</on_poweroff>
>>>> +  <on_reboot>restart</on_reboot>
>>>> +  <on_crash>destroy</on_crash>
>>>> +  <devices>
>>>> +    <emulator>/usr/bin/qemu</emulator>
>>>> +    <controller type='usb' model='none' index='0'/>
>>>> +    <controller type='pci' index='0' model='pci-root'/>
>>>> +    <input type='mouse' bus='ps2'/>
>>>> +    <input type='keyboard' bus='ps2'/>
>>>> +    <graphics type='spice' socket='/tmp/spice.socket'/>
>>>
>>> This is an old way to specify listen type.  It would be better to add a new
>>> <listen type='socket' socket='/tmp/spice.socket'/>.  Actually I'm working on
>>> this support and I have my patches almost finished but they depends on this
>>> patch series:
>>>
>>> https://www.redhat.com/archives/libvir-list/2016-March/msg00631.html
>>>
>>> You can see my progress there:
>>>
>>> https://github.com/Antique/libvirt/tree/spice-unix-socket
>>
>> We briefly discussed about this with Cole on IRC, and what you suggest
>> is indeed the way forward. His patch is a quick way to get
>> feature-parity with what VNC does, and we were not aware of your series.
>>
>> You seem to be adding
>> <listen type='socket' socket='/tmp/foo.sock'/>
>>
>> I think <listen type='unix' path='/tmp/foo.sock'/> would be more
>> consistent with what is done for channels, /interface/source, ...
>>

Agreed, that seems more consistent to me.

> 
> I know, Cole's patch is an easy and quick way but we will have to deal with it
> for the rest of libvirt's lifetime.  That's why I've ended with rather larger
> series that cleanup a lot of staff and introduce new listen type instead.
> 

Right, but we already have to deal with that <graphics socket=.../> format for
VNC... not adding that to SPICE is also inconsistent. Just pointing it out,
doesn't matter to me much either way

- Cole