Source code for kiwi.utils.block

# 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
# 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 <>
import os
import re

# project
from kiwi.command import Command

[docs]class BlockID: """ **Get information from a block device** :param str device: block device node name name. The device can also be specified as UUID=<uuid> """ def __init__(self, device): uuid_format = re.match(r'^UUID=(.*)', device) if uuid_format: blkid_result = ['blkid', '--uuid',] ) self.device = blkid_result.output.strip(os.linesep) else: self.device = device
[docs] def get_label(self): """ Retrieve filesystem label from block device :return: block device label :rtype: str """ return self.get_blkid('LABEL')
[docs] def get_uuid(self): """ Retrieve filesystem uuid from block device :return: uuid for the filesystem of the block device :rtype: str """ return self.get_blkid('UUID')
[docs] def get_filesystem(self): """ Retrieve filesystem type from block device :return: filesystem type :rtype: str """ return self.get_blkid('TYPE')
[docs] def get_partition_count(self) -> int: """ Retrieve number of partitions from block device :return: A number :rtype: int """ partition_count = 0 lsblk_result = ['lsblk', '-r', '-o', 'NAME,TYPE', self.device] ) for line in lsblk_result.output.strip().split(os.linesep): if line.strip().endswith('part'): partition_count += 1 return partition_count
[docs] def get_blkid(self, id_type): """ Retrieve information for specified metadata ID from block device :param string id_type: metadata ID, see man blkid for details :return: ID of the block device :rtype: str """ blkid_result = ['blkid', self.device, '-s', id_type, '-o', 'value'], raise_on_error=False ) return blkid_result.output.strip(os.linesep) if blkid_result else ''