Source code for qubes.vm.templatevm

#
# The Qubes OS Project, http://www.qubes-os.org
#
# Copyright (C) 2014-2016  Wojtek Porczyk <woju@invisiblethingslab.com>
# Copyright (C) 2016       Marek Marczykowski <marmarek@invisiblethingslab.com>)
# Copyright (C) 2016       Bahtiar `kalkin-` Gadimov <bahtiar@gadimov.de>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, see <https://www.gnu.org/licenses/>.
#

''' This module contains the TemplateVM implementation '''

import qubes
import qubes.config
import qubes.vm.qubesvm
import qubes.vm.mix.net
from qubes.config import defaults
from qubes.vm.qubesvm import QubesVM


[docs]class TemplateVM(QubesVM): '''Template for AppVM''' dir_path_prefix = qubes.config.system_path['qubes_templates_dir'] @property def appvms(self): ''' Returns a generator containing all domains based on the current TemplateVM. ''' for vm in self.app.domains: if hasattr(vm, 'template') and vm.template is self: yield vm netvm = qubes.VMProperty('netvm', load_stage=4, allow_none=True, default=None, # pylint: disable=protected-access setter=qubes.vm.qubesvm.QubesVM.netvm._setter, doc='VM that provides network connection to this domain. When ' '`None`, machine is disconnected.') def __init__(self, *args, **kwargs): assert 'template' not in kwargs, "A TemplateVM can not have a template" self.volume_config = { 'root': { 'name': 'root', 'snap_on_start': False, 'save_on_stop': True, 'rw': True, 'source': None, 'size': defaults['root_img_size'], }, 'private': { 'name': 'private', 'snap_on_start': False, 'save_on_stop': True, 'rw': True, 'source': None, 'size': defaults['private_img_size'], 'revisions_to_keep': 0, }, 'volatile': { 'name': 'volatile', 'size': defaults['root_img_size'], 'snap_on_start': False, 'save_on_stop': False, 'rw': True, }, 'kernel': { 'name': 'kernel', 'snap_on_start': False, 'save_on_stop': False, 'rw': False } } super(TemplateVM, self).__init__(*args, **kwargs)
[docs] @qubes.events.handler('property-set:default_user', 'property-set:kernel', 'property-set:kernelopts', 'property-set:vcpus', 'property-set:memory', 'property-set:maxmem', 'property-set:qrexec_timeout', 'property-set:shutdown_timeout', 'property-set:management_dispvm') def on_property_set_child(self, _event, name, newvalue, oldvalue=None): """Send event about default value change to child VMs (which use default inherited from the template). This handler is supposed to be set for properties using `_default_with_template()` function for the default value. """ if newvalue == oldvalue: return for vm in self.appvms: if not vm.property_is_default(name): continue vm.fire_event('property-reset:' + name, name=name)