0eb2d2713e
Installing the same image to different storage disks on the same machine creates device conflicts with unexpected side effects. This commit adds a validation based on the PTUUID of the disk image to check if another device on the system has the same ID and if yes, does not allow to install the image again including a message which device takes the same identifier. This references bsc#1228741
116 lines
3.0 KiB
Python
116 lines
3.0 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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import os
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import re
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# project
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from kiwi.command import Command
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class BlockID:
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"""
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**Get information from a block device**
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:param str device:
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block device node name name. The device can
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also be specified as UUID=<uuid>
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"""
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def __init__(self, device):
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uuid_format = re.match(r'^UUID=(.*)', device)
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if uuid_format:
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blkid_result = Command.run(
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['blkid', '--uuid', uuid_format.group(1)]
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)
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self.device = blkid_result.output.strip(os.linesep)
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else:
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self.device = device
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def get_label(self):
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"""
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Retrieve filesystem label from block device
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:return: block device label
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:rtype: str
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"""
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return self.get_blkid('LABEL')
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def get_uuid(self):
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"""
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Retrieve filesystem uuid from block device
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:return: uuid for the filesystem of the block device
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:rtype: str
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"""
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return self.get_blkid('UUID')
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def get_ptuuid(self):
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"""
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Retrieve partition uuid from block device
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:return: uuid of the partition table
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:rtype: str
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"""
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return self.get_blkid('PTUUID')
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def get_filesystem(self):
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"""
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Retrieve filesystem type from block device
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:return: filesystem type
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:rtype: str
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"""
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return self.get_blkid('TYPE')
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def get_partition_count(self) -> int:
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"""
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Retrieve number of partitions from block device
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:return: A number
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:rtype: int
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"""
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partition_count = 0
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lsblk_result = Command.run(
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['lsblk', '-r', '-o', 'NAME,TYPE', self.device]
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)
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for line in lsblk_result.output.strip().split(os.linesep):
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if line.strip().endswith('part'):
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partition_count += 1
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return partition_count
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def get_blkid(self, id_type):
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"""
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Retrieve information for specified metadata ID from block device
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:param string id_type: metadata ID, see man blkid for details
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:return: ID of the block device
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:rtype: str
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"""
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blkid_result = Command.run(
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['blkid', self.device, '-s', id_type, '-o', 'value'],
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raise_on_error=False
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)
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return blkid_result.output.strip(os.linesep) if blkid_result else ''
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