Source code for kiwi.storage.device_provider

# Copyright (c) 2015 SUSE Linux GmbH.  All rights reserved.
#
# This file is part of kiwi.
#
# kiwi is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# kiwi is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with kiwi.  If not, see <http://www.gnu.org/licenses/>
#
# project
from kiwi.command import Command
from kiwi.exceptions import (
    KiwiDeviceProviderError
)


[docs]class DeviceProvider: """ **Base class for any class providing storage devices** """
[docs] def get_device(self): """ Representation of device nodes Could provide one ore more devices representing the storage Implementation in specialized device provider class """ raise KiwiDeviceProviderError( 'No storage device(s) provided' )
[docs] def get_uuid(self, device): """ UUID of device :param string device: node name :return: UUID from blkid :rtype: str """ uuid_call = Command.run( ['blkid', device, '-s', 'UUID', '-o', 'value'] ) return uuid_call.output.rstrip('\n')
[docs] def get_byte_size(self, device): """ Size of device in bytes :param string device: node name :return: byte value from blockdev :rtype: int """ blockdev_call = Command.run( ['blockdev', '--getsize64', device] ) return int(blockdev_call.output.rstrip('\n'))
[docs] def is_loop(self): """ Check if device provider is loop based By default this is always False and needs an implementation in the the specialized device provider class :return: True or False :rtype: bool """ return False