a3ce96ae78
There are more places where this cleanup from %x format attributes to the format() method is required. Here it is done in the scope of the image resize task
132 lines
4.2 KiB
Python
132 lines
4.2 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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"""
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usage: kiwi image resize -h | --help
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kiwi image resize --target-dir=<directory> --size=<size>
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[--root=<directory>]
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kiwi image resize help
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commands:
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resize
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for disk based images, allow to resize the image to a new
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disk geometry. The additional space is free and not in use
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by the image. In order to make use of the additional free
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space a repartition process is required like it is provided
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by kiwi's oem boot code. Therefore the resize operation is
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useful for oem image builds most of the time
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options:
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--root=<directory>
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the path to the root directory, if not specified kiwi
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searches the root directory in build/image-root below
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the specified target directory
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--size=<size>
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new size of the image. The value is either a size in bytes
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or can be specified with m=MB or g=GB. Example: 20g
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--target-dir=<directory>
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the target directory to expect image build results
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"""
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import re
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import math
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# project
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from .base import CliTask
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from ..help import Help
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from ..logger import log
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from ..storage.subformat import DiskFormat
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from ..exceptions import (
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KiwiImageResizeError
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)
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class ImageResizeTask(CliTask):
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"""
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Implements resizing of disk images and their disk format
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Attributes
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* :attr:`manual`
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Instance of Help
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"""
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def process(self):
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"""
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reformats raw disk image and its format to a new disk
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geometry using the qemu tool chain
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"""
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self.manual = Help()
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if self.command_args.get('help') is True:
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return self.manual.show('kiwi::image::resize')
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if self.command_args['--root']:
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image_root = self.command_args['--root']
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else:
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image_root = ''.join(
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[self.command_args['--target-dir'], '/build/image-root']
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)
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self.load_xml_description(
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image_root
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)
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disk_format = self.xml_state.build_type.get_format()
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image_format = DiskFormat(
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disk_format or 'raw', self.xml_state, image_root,
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self.command_args['--target-dir']
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)
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if not image_format.has_raw_disk():
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raise KiwiImageResizeError(
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'no raw disk image {0} found in build results'.format(
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image_format.diskname
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)
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)
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new_disk_size = self._to_bytes(self.command_args['--size'])
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log.info(
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'Resizing raw disk to {0} bytes'.format(new_disk_size)
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)
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resize_result = image_format.resize_raw_disk(new_disk_size)
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if disk_format and resize_result is True:
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log.info(
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'Creating {0} disk format from resized raw disk'.format(
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disk_format
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)
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)
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image_format.create_image_format()
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elif resize_result is False:
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log.info(
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'Raw disk is already at {0} bytes'.format(new_disk_size)
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)
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def _to_bytes(self, size_value):
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size_format = '^(\d+)([gGmM]{0,1})$'
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size = re.search(size_format, size_value)
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if not size:
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raise KiwiImageResizeError(
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'unsupported size format {0}, must match {1}'.format(
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size_value, size_format
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)
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)
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size_base = int(size.group(1))
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size_unit = {'g': 3, 'm': 2}.get(size.group(2).lower())
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return size_unit and size_base * math.pow(0x400, size_unit) or size_base
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