511 lines
20 KiB
Python
511 lines
20 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) 2017 Marek Marczykowski-Górecki
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# <marmarek@invisiblethingslab.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program 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
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, see <http://www.gnu.org/licenses/>.
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from unittest import mock
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import jinja2
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import qubes.tests
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import qubes.ext.block
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domain_xml_template = '''
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<domain type='xen' id='9'>
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<name>test-vm</name>
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<uuid>00000000-0000-0000-0000-0000000000ae</uuid>
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<memory unit='KiB'>4096000</memory>
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<currentMemory unit='KiB'>409600</currentMemory>
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<vcpu placement='static'>8</vcpu>
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<os>
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<type arch='x86_64' machine='xenpv'>linux</type>
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<kernel>/var/lib/qubes/vm-kernels/4.4.55-11/vmlinuz</kernel>
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<initrd>/var/lib/qubes/vm-kernels/4.4.55-11/initramfs</initrd>
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<cmdline>root=/dev/mapper/dmroot ro nomodeset console=hvc0 rd_NO_PLYMOUTH rd.plymouth.enable=0 plymouth.enable=0 dyndbg="file drivers/xen/gntdev.c +p" printk=8</cmdline>
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</os>
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<clock offset='utc' adjustment='reset'>
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<timer name='tsc' mode='native'/>
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</clock>
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<on_poweroff>destroy</on_poweroff>
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<on_reboot>destroy</on_reboot>
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<on_crash>destroy</on_crash>
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<devices>
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<disk type='block' device='disk'>
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<driver name='phy'/>
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<source dev='/var/lib/qubes/vm-templates/fedora-25/root.img:/var/lib/qubes/vm-templates/fedora-25/root-cow.img'/>
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<backingStore/>
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<script path='block-snapshot'/>
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<target dev='xvda' bus='xen'/>
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<readonly/>
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</disk>
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<disk type='block' device='disk'>
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<driver name='phy'/>
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<source dev='/var/lib/qubes/appvms/test-vm/private.img'/>
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<backingStore/>
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<target dev='xvdb' bus='xen'/>
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</disk>
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<disk type='block' device='disk'>
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<driver name='phy'/>
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<source dev='/var/lib/qubes/appvms/test-vm/volatile.img'/>
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<backingStore/>
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<target dev='xvdc' bus='xen'/>
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</disk>
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<disk type='block' device='disk'>
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<driver name='phy'/>
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<source dev='/var/lib/qubes/vm-kernels/4.4.55-11/modules.img'/>
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<backingStore/>
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<target dev='xvdd' bus='xen'/>
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<readonly/>
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</disk>
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{}
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<interface type='ethernet'>
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<mac address='00:16:3e:5e:6c:06'/>
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<ip address='10.137.1.8' family='ipv4'/>
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<script path='vif-route-qubes'/>
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<backenddomain name='sys-firewall'/>
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</interface>
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<console type='pty' tty='/dev/pts/0'>
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<source path='/dev/pts/0'/>
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<target type='xen' port='0'/>
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</console>
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</devices>
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</domain>
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'''
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class TestQubesDB(object):
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def __init__(self, data):
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self._data = data
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def read(self, key):
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if isinstance(key, str):
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key = key.encode()
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return self._data.get(key, None)
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def list(self, prefix):
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if isinstance(prefix, str):
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prefix = prefix.encode()
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return [key for key in self._data if key.startswith(prefix)]
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class TestApp(object):
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def __init__(self):
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#: jinja2 environment for libvirt XML templates
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self.env = jinja2.Environment(
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loader=jinja2.FileSystemLoader([
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'templates',
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]),
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undefined=jinja2.StrictUndefined)
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self.domains = {}
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class TestVM(object):
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def __init__(self, qdb, domain_xml=None, running=True, name='test-vm'):
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self.name = name
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self.qdb = TestQubesDB(qdb)
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self.libvirt_domain = mock.Mock()
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self.is_running = lambda: running
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self.log = mock.Mock()
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self.app = TestApp()
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if domain_xml:
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self.libvirt_domain.configure_mock(**{
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'XMLDesc.return_value': domain_xml
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})
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def __eq__(self, other):
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if isinstance(other, TestVM):
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return self.name == other.name
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class TC_00_Block(qubes.tests.QubesTestCase):
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def setUp(self):
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super().setUp()
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self.ext = qubes.ext.block.BlockDeviceExtension()
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def test_000_device_get(self):
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vm = TestVM({
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b'/qubes-block-devices/sda': b'',
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b'/qubes-block-devices/sda/desc': b'Test device',
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b'/qubes-block-devices/sda/size': b'1024000',
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b'/qubes-block-devices/sda/mode': b'w',
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})
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device_info = self.ext.device_get(vm, 'sda')
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self.assertIsInstance(device_info, qubes.ext.block.BlockDevice)
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self.assertEqual(device_info.backend_domain, vm)
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self.assertEqual(device_info.ident, 'sda')
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self.assertEqual(device_info.description, 'Test device')
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self.assertEqual(device_info._description, 'Test device')
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self.assertEqual(device_info.size, 1024000)
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self.assertEqual(device_info.mode, 'w')
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self.assertEqual(device_info.frontend_domain, None)
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self.assertEqual(device_info.device_node, '/dev/sda')
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def test_001_device_get_other_node(self):
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vm = TestVM({
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b'/qubes-block-devices/mapper_dmroot': b'',
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b'/qubes-block-devices/mapper_dmroot/desc': b'Test device',
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b'/qubes-block-devices/mapper_dmroot/size': b'1024000',
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b'/qubes-block-devices/mapper_dmroot/mode': b'w',
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})
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device_info = self.ext.device_get(vm, 'mapper_dmroot')
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self.assertIsInstance(device_info, qubes.ext.block.BlockDevice)
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self.assertEqual(device_info.backend_domain, vm)
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self.assertEqual(device_info.ident, 'mapper_dmroot')
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self.assertEqual(device_info.description, 'Test device')
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self.assertEqual(device_info._description, 'Test device')
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self.assertEqual(device_info.size, 1024000)
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self.assertEqual(device_info.mode, 'w')
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self.assertEqual(device_info.frontend_domain, None)
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self.assertEqual(device_info.device_node, '/dev/mapper/dmroot')
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def test_002_device_get_invalid_desc(self):
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vm = TestVM({
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b'/qubes-block-devices/sda': b'',
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b'/qubes-block-devices/sda/desc': b'Test device<>za\xc4\x87abc',
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b'/qubes-block-devices/sda/size': b'1024000',
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b'/qubes-block-devices/sda/mode': b'w',
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})
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device_info = self.ext.device_get(vm, 'sda')
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self.assertEqual(device_info.description, 'Test device__za__abc')
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def test_003_device_get_invalid_size(self):
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vm = TestVM({
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b'/qubes-block-devices/sda': b'',
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b'/qubes-block-devices/sda/desc': b'Test device',
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b'/qubes-block-devices/sda/size': b'1024000abc',
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b'/qubes-block-devices/sda/mode': b'w',
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})
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device_info = self.ext.device_get(vm, 'sda')
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self.assertEqual(device_info.size, 0)
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vm.log.warning.assert_called_once_with('Device sda has invalid size')
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def test_004_device_get_invalid_mode(self):
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vm = TestVM({
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b'/qubes-block-devices/sda': b'',
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b'/qubes-block-devices/sda/desc': b'Test device',
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b'/qubes-block-devices/sda/size': b'1024000',
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b'/qubes-block-devices/sda/mode': b'abc',
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})
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device_info = self.ext.device_get(vm, 'sda')
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self.assertEqual(device_info.mode, 'w')
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vm.log.warning.assert_called_once_with('Device sda has invalid mode')
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def test_005_device_get_none(self):
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vm = TestVM({
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b'/qubes-block-devices/sda': b'',
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b'/qubes-block-devices/sda/desc': b'Test device',
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b'/qubes-block-devices/sda/size': b'1024000',
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b'/qubes-block-devices/sda/mode': b'w',
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})
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device_info = self.ext.device_get(vm, 'sdb')
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self.assertIsNone(device_info)
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def test_010_devices_list(self):
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vm = TestVM({
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b'/qubes-block-devices/sda': b'',
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b'/qubes-block-devices/sda/desc': b'Test device',
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b'/qubes-block-devices/sda/size': b'1024000',
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b'/qubes-block-devices/sda/mode': b'w',
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b'/qubes-block-devices/sdb': b'',
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b'/qubes-block-devices/sdb/desc': b'Test device2',
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b'/qubes-block-devices/sdb/size': b'2048000',
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b'/qubes-block-devices/sdb/mode': b'r',
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})
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devices = sorted(list(self.ext.on_device_list_block(vm, '')))
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self.assertEqual(len(devices), 2)
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self.assertEqual(devices[0].backend_domain, vm)
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self.assertEqual(devices[0].ident, 'sda')
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self.assertEqual(devices[0].description, 'Test device')
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self.assertEqual(devices[0].size, 1024000)
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self.assertEqual(devices[0].mode, 'w')
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self.assertEqual(devices[1].backend_domain, vm)
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self.assertEqual(devices[1].ident, 'sdb')
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self.assertEqual(devices[1].description, 'Test device2')
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self.assertEqual(devices[1].size, 2048000)
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self.assertEqual(devices[1].mode, 'r')
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def test_011_devices_list_empty(self):
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vm = TestVM({})
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devices = sorted(list(self.ext.on_device_list_block(vm, '')))
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self.assertEqual(len(devices), 0)
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def test_012_devices_list_invalid_ident(self):
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vm = TestVM({
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b'/qubes-block-devices/invalid ident': b'',
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b'/qubes-block-devices/invalid+ident': b'',
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b'/qubes-block-devices/invalid#': b'',
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})
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devices = sorted(list(self.ext.on_device_list_block(vm, '')))
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self.assertEqual(len(devices), 0)
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msg = 'test-vm vm\'s device path name contains unsafe characters. '\
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'Skipping it.'
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self.assertEqual(vm.log.warning.mock_calls, [
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mock.call(msg),
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mock.call(msg),
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mock.call(msg),
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])
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def test_020_find_unused_frontend(self):
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vm = TestVM({}, domain_xml=domain_xml_template.format(''))
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frontend = self.ext.find_unused_frontend(vm)
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self.assertEqual(frontend, 'xvdi')
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def test_022_find_unused_frontend2(self):
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disk = '''
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<disk type="block" device="disk">
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<driver name="phy" />
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<source dev="/dev/sda" />
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<target dev="xvdi" />
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<readonly />
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<backenddomain name="sys-usb" />
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</disk>
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'''
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vm = TestVM({}, domain_xml=domain_xml_template.format(disk))
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frontend = self.ext.find_unused_frontend(vm)
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self.assertEqual(frontend, 'xvdj')
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def test_030_list_attached_empty(self):
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vm = TestVM({}, domain_xml=domain_xml_template.format(''))
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devices = sorted(list(self.ext.on_device_list_attached(vm, '')))
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self.assertEqual(len(devices), 0)
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def test_031_list_attached(self):
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disk = '''
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<disk type="block" device="disk">
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<driver name="phy" />
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<source dev="/dev/sda" />
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<target dev="xvdi" />
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<readonly />
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<backenddomain name="sys-usb" />
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</disk>
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'''
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vm = TestVM({}, domain_xml=domain_xml_template.format(disk))
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vm.app.domains['test-vm'] = vm
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vm.app.domains['sys-usb'] = TestVM({}, name='sys-usb')
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devices = sorted(list(self.ext.on_device_list_attached(vm, '')))
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self.assertEqual(len(devices), 1)
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dev = devices[0][0]
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options = devices[0][1]
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self.assertEqual(dev.backend_domain, vm.app.domains['sys-usb'])
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self.assertEqual(dev.ident, 'sda')
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self.assertEqual(options['frontend-dev'], 'xvdi')
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self.assertEqual(options['read-only'], 'yes')
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def test_032_list_attached_dom0(self):
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disk = '''
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<disk type="block" device="disk">
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<driver name="phy" />
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<source dev="/dev/sda" />
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<target dev="xvdi" />
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</disk>
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'''
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vm = TestVM({}, domain_xml=domain_xml_template.format(disk))
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vm.app.domains['test-vm'] = vm
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vm.app.domains['sys-usb'] = TestVM({}, name='sys-usb')
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vm.app.domains['dom0'] = TestVM({}, name='dom0')
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vm.app.domains[0] = vm.app.domains['dom0']
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devices = sorted(list(self.ext.on_device_list_attached(vm, '')))
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self.assertEqual(len(devices), 1)
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dev = devices[0][0]
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options = devices[0][1]
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self.assertEqual(dev.backend_domain, vm.app.domains['dom0'])
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self.assertEqual(dev.ident, 'sda')
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self.assertEqual(options['frontend-dev'], 'xvdi')
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self.assertEqual(options['read-only'], 'no')
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def test_040_attach(self):
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back_vm = TestVM(name='sys-usb', qdb={
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b'/qubes-block-devices/sda': b'',
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b'/qubes-block-devices/sda/desc': b'Test device',
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b'/qubes-block-devices/sda/size': b'1024000',
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b'/qubes-block-devices/sda/mode': b'w',
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})
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vm = TestVM({}, domain_xml=domain_xml_template.format(''))
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dev = qubes.ext.block.BlockDevice(back_vm, 'sda')
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self.ext.on_device_pre_attached_block(vm, '', dev, {})
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device_xml = (
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'<disk type="block" device="disk">\n'
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' <driver name="phy" />\n'
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' <source dev="/dev/sda" />\n'
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' <target dev="xvdi" />\n'
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' <backenddomain name="sys-usb" />\n'
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'</disk>')
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vm.libvirt_domain.attachDevice.assert_called_once_with(device_xml)
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def test_041_attach_frontend(self):
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back_vm = TestVM(name='sys-usb', qdb={
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b'/qubes-block-devices/sda': b'',
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b'/qubes-block-devices/sda/desc': b'Test device',
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b'/qubes-block-devices/sda/size': b'1024000',
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b'/qubes-block-devices/sda/mode': b'w',
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})
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vm = TestVM({}, domain_xml=domain_xml_template.format(''))
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dev = qubes.ext.block.BlockDevice(back_vm, 'sda')
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self.ext.on_device_pre_attached_block(vm, '', dev,
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{'frontend-dev': 'xvdj'})
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device_xml = (
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'<disk type="block" device="disk">\n'
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' <driver name="phy" />\n'
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' <source dev="/dev/sda" />\n'
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' <target dev="xvdj" />\n'
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' <backenddomain name="sys-usb" />\n'
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'</disk>')
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vm.libvirt_domain.attachDevice.assert_called_once_with(device_xml)
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def test_042_attach_read_only(self):
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back_vm = TestVM(name='sys-usb', qdb={
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b'/qubes-block-devices/sda': b'',
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b'/qubes-block-devices/sda/desc': b'Test device',
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b'/qubes-block-devices/sda/size': b'1024000',
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b'/qubes-block-devices/sda/mode': b'w',
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})
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vm = TestVM({}, domain_xml=domain_xml_template.format(''))
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dev = qubes.ext.block.BlockDevice(back_vm, 'sda')
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self.ext.on_device_pre_attached_block(vm, '', dev,
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{'read-only': 'yes'})
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device_xml = (
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'<disk type="block" device="disk">\n'
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' <driver name="phy" />\n'
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' <source dev="/dev/sda" />\n'
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' <target dev="xvdi" />\n'
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' <readonly />\n'
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' <backenddomain name="sys-usb" />\n'
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'</disk>')
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vm.libvirt_domain.attachDevice.assert_called_once_with(device_xml)
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def test_043_attach_invalid_option(self):
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back_vm = TestVM(name='sys-usb', qdb={
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b'/qubes-block-devices/sda': b'',
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b'/qubes-block-devices/sda/desc': b'Test device',
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b'/qubes-block-devices/sda/size': b'1024000',
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b'/qubes-block-devices/sda/mode': b'w',
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})
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vm = TestVM({}, domain_xml=domain_xml_template.format(''))
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dev = qubes.ext.block.BlockDevice(back_vm, 'sda')
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with self.assertRaises(qubes.exc.QubesValueError):
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self.ext.on_device_pre_attached_block(vm, '', dev,
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{'no-such-option': '123'})
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self.assertFalse(vm.libvirt_domain.attachDevice.called)
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def test_044_attach_invalid_option2(self):
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back_vm = TestVM(name='sys-usb', qdb={
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b'/qubes-block-devices/sda': b'',
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b'/qubes-block-devices/sda/desc': b'Test device',
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b'/qubes-block-devices/sda/size': b'1024000',
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b'/qubes-block-devices/sda/mode': b'w',
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})
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vm = TestVM({}, domain_xml=domain_xml_template.format(''))
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dev = qubes.ext.block.BlockDevice(back_vm, 'sda')
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with self.assertRaises(qubes.exc.QubesValueError):
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self.ext.on_device_pre_attached_block(vm, '', dev,
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{'read-only': 'maybe'})
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self.assertFalse(vm.libvirt_domain.attachDevice.called)
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def test_045_attach_backend_not_running(self):
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back_vm = TestVM(name='sys-usb', running=False, qdb={
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b'/qubes-block-devices/sda': b'',
|
|
b'/qubes-block-devices/sda/desc': b'Test device',
|
|
b'/qubes-block-devices/sda/size': b'1024000',
|
|
b'/qubes-block-devices/sda/mode': b'w',
|
|
})
|
|
vm = TestVM({}, domain_xml=domain_xml_template.format(''))
|
|
dev = qubes.ext.block.BlockDevice(back_vm, 'sda')
|
|
with self.assertRaises(qubes.exc.QubesVMNotRunningError):
|
|
self.ext.on_device_pre_attached_block(vm, '', dev, {})
|
|
self.assertFalse(vm.libvirt_domain.attachDevice.called)
|
|
|
|
def test_046_attach_ro_dev_rw(self):
|
|
back_vm = TestVM(name='sys-usb', qdb={
|
|
b'/qubes-block-devices/sda': b'',
|
|
b'/qubes-block-devices/sda/desc': b'Test device',
|
|
b'/qubes-block-devices/sda/size': b'1024000',
|
|
b'/qubes-block-devices/sda/mode': b'r',
|
|
})
|
|
vm = TestVM({}, domain_xml=domain_xml_template.format(''))
|
|
dev = qubes.ext.block.BlockDevice(back_vm, 'sda')
|
|
with self.assertRaises(qubes.exc.QubesValueError):
|
|
self.ext.on_device_pre_attached_block(vm, '', dev,
|
|
{'read-only': 'no'})
|
|
self.assertFalse(vm.libvirt_domain.attachDevice.called)
|
|
|
|
def test_047_attach_read_only_auto(self):
|
|
back_vm = TestVM(name='sys-usb', qdb={
|
|
b'/qubes-block-devices/sda': b'',
|
|
b'/qubes-block-devices/sda/desc': b'Test device',
|
|
b'/qubes-block-devices/sda/size': b'1024000',
|
|
b'/qubes-block-devices/sda/mode': b'r',
|
|
})
|
|
vm = TestVM({}, domain_xml=domain_xml_template.format(''))
|
|
dev = qubes.ext.block.BlockDevice(back_vm, 'sda')
|
|
self.ext.on_device_pre_attached_block(vm, '', dev, {})
|
|
device_xml = (
|
|
'<disk type="block" device="disk">\n'
|
|
' <driver name="phy" />\n'
|
|
' <source dev="/dev/sda" />\n'
|
|
' <target dev="xvdi" />\n'
|
|
' <readonly />\n'
|
|
' <backenddomain name="sys-usb" />\n'
|
|
'</disk>')
|
|
vm.libvirt_domain.attachDevice.assert_called_once_with(device_xml)
|
|
|
|
def test_050_detach(self):
|
|
back_vm = TestVM(name='sys-usb', qdb={
|
|
b'/qubes-block-devices/sda': b'',
|
|
b'/qubes-block-devices/sda/desc': b'Test device',
|
|
b'/qubes-block-devices/sda/size': b'1024000',
|
|
b'/qubes-block-devices/sda/mode': b'r',
|
|
})
|
|
device_xml = (
|
|
'<disk type="block" device="disk">\n'
|
|
' <driver name="phy" />\n'
|
|
' <source dev="/dev/sda" />\n'
|
|
' <target dev="xvdi" />\n'
|
|
' <readonly />\n'
|
|
' <backenddomain name="sys-usb" />\n'
|
|
'</disk>')
|
|
vm = TestVM({}, domain_xml=domain_xml_template.format(device_xml))
|
|
vm.app.domains['test-vm'] = vm
|
|
vm.app.domains['sys-usb'] = TestVM({}, name='sys-usb')
|
|
dev = qubes.ext.block.BlockDevice(back_vm, 'sda')
|
|
self.ext.on_device_pre_detached_block(vm, '', dev)
|
|
vm.libvirt_domain.detachDevice.assert_called_once_with(device_xml)
|
|
|
|
def test_051_detach_not_attached(self):
|
|
back_vm = TestVM(name='sys-usb', qdb={
|
|
b'/qubes-block-devices/sda': b'',
|
|
b'/qubes-block-devices/sda/desc': b'Test device',
|
|
b'/qubes-block-devices/sda/size': b'1024000',
|
|
b'/qubes-block-devices/sda/mode': b'r',
|
|
})
|
|
device_xml = (
|
|
'<disk type="block" device="disk">\n'
|
|
' <driver name="phy" />\n'
|
|
' <source dev="/dev/sda" />\n'
|
|
' <target dev="xvdi" />\n'
|
|
' <readonly />\n\n'
|
|
' <backenddomain name="sys-usb" />\n'
|
|
'</disk>')
|
|
vm = TestVM({}, domain_xml=domain_xml_template.format(''))
|
|
vm.app.domains['test-vm'] = vm
|
|
vm.app.domains['sys-usb'] = TestVM({}, name='sys-usb')
|
|
dev = qubes.ext.block.BlockDevice(back_vm, 'sda')
|
|
self.ext.on_device_pre_detached_block(vm, '', dev)
|
|
self.assertFalse(vm.libvirt_domain.detachDevice.called)
|