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Add domain-paused/-unpaused events

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Needed for event-driven domains-tray UI updating and anti-GUI-DoS
usability improvements.

Catches errors from event handlers to protect libvirt, and logs to
main qubesd logger singleton (by default meaning systemd journal).
This commit is contained in:
Jean-Philippe Ouellet 2018-07-29 22:37:31 -04:00
parent ecaee10f80
commit e95ef5f61d
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2 changed files with 25 additions and 0 deletions
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10
qubes/app.py
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@ -1251,6 +1251,16 @@ class Qubes(qubes.PropertyHolder):
if event == libvirt.VIR_DOMAIN_EVENT_STOPPED:
vm.on_libvirt_domain_stopped()
elif event == libvirt.VIR_DOMAIN_EVENT_SUSPENDED:
try:
vm.fire_event('domain-paused')
except Exception: # pylint: disable=broad-except
self.log.exception('Uncaught exception from domain-paused handler for domain %s', vm.name)
elif event == libvirt.VIR_DOMAIN_EVENT_RESUMED:
try:
vm.fire_event('domain-unpaused')
except Exception: # pylint: disable=broad-except
self.log.exception('Uncaught exception from domain-unpaused handler for domain %s', vm.name)
@qubes.events.handler('domain-pre-delete')
def on_domain_pre_deleted(self, event, vm):

15
qubes/vm/qubesvm.py
View File

@ -187,6 +187,21 @@ class QubesVM(qubes.vm.mix.net.NetVMMixin, qubes.vm.BaseVM):
:param event: Event name (``'domain-start'``)
*other arguments are as in :py:meth:`start`*
.. event:: domain-paused (subject, event)
Fired when the domain has been paused.
:param subject: Event emitter (the qube object)
:param event: Event name (``'domain-paused'``)
.. event:: domain-unpaused (subject, event)
Fired when the domain has been unpaused.
:param subject: Event emitter (the qube object)
:param event: Event name (``'domain-unpaused'``)
.. event:: domain-stopped (subject, event)
Fired when domain has been stopped.