124 lines
3.8 KiB
Python
124 lines
3.8 KiB
Python
#!/usr/bin/python2
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# -*- 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) 2010-2015 Joanna Rutkowska <joanna@invisiblethingslab.com>
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# Copyright (C) 2015 Wojtek Porczyk <woju@invisiblethingslab.com>
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# Copyright (C) 2016 Bahtiar `kalkin-` Gadimov <bahtiar@gadimov.de>
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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, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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''' This module contains pool implementations for different OS kernels. '''
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import os
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from qubes.storage import Pool, StoragePoolException, Volume
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class LinuxModules(Volume):
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''' A volume representing a ro linux kernel '''
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rw = False
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def __init__(self, target_dir, kernel_version, **kwargs):
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kwargs['vid'] = kernel_version
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super(LinuxModules, self).__init__(**kwargs)
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self.kernels_dir = os.path.join(target_dir, kernel_version)
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self.path = os.path.join(self.kernels_dir, 'modules.img')
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self.vmlinuz = os.path.join(self.kernels_dir, 'vmlinuz')
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self.initramfs = os.path.join(self.kernels_dir, 'initramfs')
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class LinuxKernel(Pool):
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''' Provides linux kernels '''
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driver = 'linux-kernel'
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def __init__(self, name=None, dir_path=None):
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assert dir_path, 'Missing dir_path'
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super(LinuxKernel, self).__init__(name=name)
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self.dir_path = dir_path
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def init_volume(self, vm, volume_config):
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assert 'volume_type' in volume_config, "Volume type missing " \
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+ str(volume_config)
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volume_type = volume_config['volume_type']
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if volume_type != 'read-only':
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raise StoragePoolException("Unknown volume type " + volume_type)
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volume = LinuxModules(self.dir_path, vm.kernel, **volume_config)
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return volume
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def clone(self, source, target):
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return target
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def create(self, volume, source_volume):
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return volume
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def commit_template_changes(self, volume):
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return volume
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@property
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def config(self):
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return {
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'name': self.name,
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'dir_path': self.dir_path,
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'driver': LinuxKernel.driver,
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}
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def destroy(self):
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pass
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def remove(self, volume):
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pass
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def rename(self, volume, old_name, new_name):
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return volume
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def setup(self):
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pass
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def start(self, volume):
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path = volume.path
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if not os.path.exists(path):
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raise StoragePoolException('Missing kernel modules: %s' % path)
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return volume
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def stop(self, volume):
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pass
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def verify(self, volume):
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_check_path(volume.path)
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_check_path(volume.vmlinuz)
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_check_path(volume.initramfs)
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@property
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def volumes(self):
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''' Return all known kernel volumes '''
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return [LinuxModules(self.dir_path,
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kernel_version,
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pool=self.name,
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name=kernel_version,
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volume_type='read-only')
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for kernel_version in os.listdir(self.dir_path)]
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def _check_path(path):
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''' Raise an :py:class:`qubes.storage.StoragePoolException` if ``path`` does
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not exist.
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'''
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if not os.path.exists(path):
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raise StoragePoolException('Missing file: %s' % path)
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