vm/adminvm: don't base AdminVM on QubesVM

dom0 isn't real VM and most properties doesn't apply to it. Lets make it
more explicit.

qubes/app.py

@@ -907,8 +907,7 @@ class Qubes(qubes.PropertyHolder):
             self.pools[name] = self._get_pool(**config)
 
         self.domains.add(
-            qubes.vm.adminvm.AdminVM(self, None, qid=0, name='dom0',
-                label='black'))
+            qubes.vm.adminvm.AdminVM(self, None, label='black'))
 
     @classmethod
     def create_empty_store(cls, *args, **kwargs):
@@ -1122,7 +1121,7 @@ class Qubes(qubes.PropertyHolder):
             oldvalue=None):
         # pylint: disable=unused-argument
         for vm in self.domains:
-            if vm.property_is_default('netvm'):
+            if hasattr(vm, 'netvm') and vm.property_is_default('netvm'):
                 # fire property-del:netvm as it is responsible for resetting
                 # netvm to it's default value
                 vm.fire_event('property-del:netvm',

qubes/tests/vm/qubesvm.py

@@ -30,6 +30,7 @@ import datetime
 import qubes
 import qubes.exc
 import qubes.config
+import qubes.vm
 import qubes.vm.qubesvm
 
 import qubes.tests
@@ -131,12 +132,12 @@ class TC_00_setters(qubes.tests.QubesTestCase):
     def test_030_setter_label_object(self):
         label = TestApp.labels[1]
         self.assertIs(label,
-            qubes.vm.qubesvm._setter_label(self.vm, self.prop, label))
+            qubes.vm.setter_label(self.vm, self.prop, label))
 
     def test_031_setter_label_getitem(self):
         label = TestApp.labels[1]
         self.assertIs(label,
-            qubes.vm.qubesvm._setter_label(self.vm, self.prop, 'label-1'))
+            qubes.vm.setter_label(self.vm, self.prop, 'label-1'))
 
     # there is no check for self.app.get_label()
 

qubes/vm/__init__.py

@@ -446,3 +446,14 @@ class VMProperty(qubes.property):
             return untrusted_vmname
         validate_name(None, self, untrusted_vmname)
         return untrusted_vmname
+
+
+def setter_label(self, prop, value):
+    ''' Helper for setting the domain label '''
+    # pylint: disable=unused-argument
+    if isinstance(value, qubes.Label):
+        return value
+    if isinstance(value, str) and value.startswith('label-'):
+        return self.app.labels[int(value.split('-', 1)[1])]
+
+    return self.app.get_label(value)

qubes/vm/adminvm.py

@@ -26,28 +26,28 @@
 import libvirt
 import qubes
 import qubes.exc
-import qubes.vm.qubesvm
+import qubes.vm
 
-class AdminVM(qubes.vm.qubesvm.QubesVM):
+class AdminVM(qubes.vm.BaseVM):
     '''Dom0'''
 
     dir_path = None
 
-    netvm = qubes.property('netvm', setter=qubes.property.forbidden,
-        default=None,
-        doc='Dom0 cannot have netvm')
+    name = qubes.property('name',
+        default='dom0', setter=qubes.property.forbidden)
 
-    kernel = qubes.property('netvm', setter=qubes.property.forbidden,
-        default=None,
-        doc='There are other ways to set kernel for Dom0.')
+    label = qubes.property('label',
+        setter=qubes.vm.setter_label,
+        saver=(lambda self, prop, value: 'label-{}'.format(value.index)),
+        doc='''Colourful label assigned to VM. This is where the colour of the
+            padlock is set.''')
 
-    memory = qubes.property('memory', setter=qubes.property.forbidden,
-        default=lambda self: self.get_mem(),
-        doc='Memory currently assigned to dom0.')
+    qid = qubes.property('qid',
+        default=0, setter=qubes.property.forbidden)
 
-    maxmem = qubes.property('maxmem', setter=qubes.property.forbidden,
-        default=lambda self: self.get_mem_static_max(),
-        doc='Maximum dom0 memory size, modify using xen boot options.')
+    uuid = qubes.property('uuid',
+        default='00000000-0000-0000-0000-000000000000',
+        setter=qubes.property.forbidden)
 
     @property
     def attached_volumes(self):
@@ -71,7 +71,8 @@ class AdminVM(qubes.vm.qubesvm.QubesVM):
         '''
         return None
 
-    def is_running(self):
+    @staticmethod
+    def is_running():
         '''Always :py:obj:`True`.
 
         .. seealso:
@@ -79,7 +80,8 @@ class AdminVM(qubes.vm.qubesvm.QubesVM):
         '''
         return True
 
-    def get_power_state(self):
+    @staticmethod
+    def get_power_state():
         '''Always ``'Running'``.
 
         .. seealso:
@@ -87,7 +89,8 @@ class AdminVM(qubes.vm.qubesvm.QubesVM):
         '''
         return 'Running'
 
-    def get_mem(self):
+    @staticmethod
+    def get_mem():
         '''Get current memory usage of Dom0.
 
         Unit is KiB.

qubes/vm/mix/net.py

@@ -166,7 +166,7 @@ class NetVMMixin(qubes.events.Emitter):
             NetVM.
         '''
         for vm in self.app.domains:
-            if vm.netvm is self:
+            if getattr(vm, 'netvm', None) is self:
                 yield vm
 
     #

qubes/vm/qubesvm.py

@@ -118,16 +118,6 @@ def _setter_kernel(self, prop, value):
     return value
 
 
-def _setter_label(self, prop, value):
-    ''' Helper for setting the domain label '''
-    # pylint: disable=unused-argument
-    if isinstance(value, qubes.Label):
-        return value
-    if isinstance(value, str) and value.startswith('label-'):
-        return self.app.labels[int(value.split('-', 1)[1])]
-
-    return self.app.get_label(value)
-
 def _setter_positive_int(self, prop, value):
     ''' Helper for setting a positive int. Checks that the int is >= 0 '''
     # pylint: disable=unused-argument
@@ -376,7 +366,7 @@ class QubesVM(qubes.vm.mix.net.NetVMMixin, qubes.vm.BaseVM):
     #
 
     label = qubes.property('label',
-        setter=_setter_label,
+        setter=qubes.vm.setter_label,
         saver=(lambda self, prop, value: 'label-{}'.format(value.index)),
         doc='''Colourful label assigned to VM. This is where the colour of the
             padlock is set.''')