2cdba05c99
Do not allow starting a VM while the restoring management VM has still control over it. Specifically, that restoring VM will not be able to start just restored VM. QubesOS/qubes-issues#5310
40 lines
1.4 KiB
Python
40 lines
1.4 KiB
Python
# -*- encoding: utf8 -*-
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#
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# The Qubes OS Project, http://www.qubes-os.org
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#
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# Copyright (C) 2019 Marek Marczykowski-Górecki
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# <marmarek@invisiblethingslab.com>
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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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Backup restore related functionality. Specifically:
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- prevent starting a domain currently being restored
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"""
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import qubes.api
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import qubes.ext
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import qubes.vm.adminvm
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class BackupRestoreExtension(qubes.ext.Extension):
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# pylint: disable=too-few-public-methods
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@qubes.ext.handler('domain-pre-start')
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def on_domain_pre_start(self, vm, event, **kwargs):
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"""Prevent starting a VM during restore"""
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# pylint: disable=unused-argument,no-self-use
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if 'backup-restore-in-progress' in vm.tags:
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raise qubes.exc.QubesVMError(
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vm, 'Restore of this domain in progress, cannot start')
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