d61d24b055
Those are only some cases, the most obvious ones: - defaults inherited from a template - xid and start_time on domain start/stop - IP related properties - icon QubesOS/qubes-issues#5834
112 lines
4.0 KiB
Python
112 lines
4.0 KiB
Python
#
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# The Qubes OS Project, http://www.qubes-os.org
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#
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# Copyright (C) 2014-2016 Wojtek Porczyk <woju@invisiblethingslab.com>
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# Copyright (C) 2016 Marek Marczykowski <marmarek@invisiblethingslab.com>)
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# Copyright (C) 2016 Bahtiar `kalkin-` Gadimov <bahtiar@gadimov.de>
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, see <https://www.gnu.org/licenses/>.
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#
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''' This module contains the TemplateVM implementation '''
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import qubes
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import qubes.config
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import qubes.vm.qubesvm
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import qubes.vm.mix.net
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from qubes.config import defaults
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from qubes.vm.qubesvm import QubesVM
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class TemplateVM(QubesVM):
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'''Template for AppVM'''
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dir_path_prefix = qubes.config.system_path['qubes_templates_dir']
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@property
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def appvms(self):
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''' Returns a generator containing all domains based on the current
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TemplateVM.
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'''
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for vm in self.app.domains:
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if hasattr(vm, 'template') and vm.template is self:
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yield vm
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netvm = qubes.VMProperty('netvm', load_stage=4, allow_none=True,
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default=None,
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# pylint: disable=protected-access
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setter=qubes.vm.qubesvm.QubesVM.netvm._setter,
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doc='VM that provides network connection to this domain. When '
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'`None`, machine is disconnected.')
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def __init__(self, *args, **kwargs):
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assert 'template' not in kwargs, "A TemplateVM can not have a template"
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self.volume_config = {
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'root': {
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'name': 'root',
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'snap_on_start': False,
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'save_on_stop': True,
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'rw': True,
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'source': None,
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'size': defaults['root_img_size'],
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},
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'private': {
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'name': 'private',
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'snap_on_start': False,
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'save_on_stop': True,
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'rw': True,
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'source': None,
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'size': defaults['private_img_size'],
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'revisions_to_keep': 0,
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},
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'volatile': {
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'name': 'volatile',
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'size': defaults['root_img_size'],
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'snap_on_start': False,
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'save_on_stop': False,
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'rw': True,
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},
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'kernel': {
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'name': 'kernel',
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'snap_on_start': False,
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'save_on_stop': False,
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'rw': False
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}
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}
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super(TemplateVM, self).__init__(*args, **kwargs)
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@qubes.events.handler('property-set:default_user',
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'property-set:kernel',
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'property-set:kernelopts',
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'property-set:vcpus',
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'property-set:memory',
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'property-set:maxmem',
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'property-set:qrexec_timeout',
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'property-set:shutdown_timeout',
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'property-set:management_dispvm')
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def on_property_set_child(self, _event, name, newvalue, oldvalue=None):
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"""Send event about default value change to child VMs
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(which use default inherited from the template).
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This handler is supposed to be set for properties using
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`_default_with_template()` function for the default value.
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"""
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if newvalue == oldvalue:
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return
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for vm in self.appvms:
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if not vm.property_is_default(name):
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continue
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vm.fire_event('property-reset:' + name, name=name)
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