1a5257a0e8
For details on the motivation of this change please visit: https://wiki.python.org/moin/FutureProofPython
70 lines
2.0 KiB
Python
70 lines
2.0 KiB
Python
# Copyright (c) 2015 SUSE Linux GmbH. All rights reserved.
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#
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# This file is part of kiwi.
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#
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# kiwi 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 3 of the License, or
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# (at your option) any later version.
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#
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# kiwi 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
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# along with kiwi. If not, see <http://www.gnu.org/licenses/>
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#
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# project
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from kiwi.command import Command
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from kiwi.exceptions import (
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KiwiDeviceProviderError
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)
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class DeviceProvider(object):
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"""
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Base class for any class providing storage devices
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"""
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def get_device(self):
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"""
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Representation of device nodes
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Could provide one ore more devices representing the storage
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Implementation in specialized device provider class
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"""
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raise KiwiDeviceProviderError(
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'No storage device(s) provided'
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)
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def get_uuid(self, device):
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"""
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UUID of device
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:param string device: node name
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"""
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uuid_call = Command.run(
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['blkid', device, '-s', 'UUID', '-o', 'value']
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)
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return uuid_call.output.rstrip('\n')
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def get_byte_size(self, device):
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"""
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Size of device in bytes
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:param string device: node name
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"""
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blockdev_call = Command.run(
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['blockdev', '--getsize64', device]
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)
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return int(blockdev_call.output.rstrip('\n'))
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def is_loop(self):
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"""
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Check if device provider is loop based
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By default this is always False and needs an implementation
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in the the specialized device provider class
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"""
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return False
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