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https://github.com/u-boot/u-boot.git
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5b2ea71eaf
There is no need to mount the filesystem on the host side. All filesystem tools offer some way to fill the fs without mounting. So, create the content on the host side, create and fill the fs without mounting. No more sudo or guestmount needed. This new approach works because the tests don't care about user IDs and no device files are needed. If user IDs start to matter it's still possible to use wrapper tools like fakeroot in future while filling the fs. Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
78 lines
2.6 KiB
Python
78 lines
2.6 KiB
Python
# SPDX-License-Identifier: GPL-2.0+
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#
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# Copyright (c) 2018, Linaro Limited
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# Author: Takahiro Akashi <takahiro.akashi@linaro.org>
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"""Helper functions for dealing with filesystems"""
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import re
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import os
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from subprocess import call, check_call, check_output, CalledProcessError
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def mk_fs(config, fs_type, size, prefix, src_dir=None, size_gran = 0x100000):
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"""Create a file system volume
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Args:
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config (u_boot_config): U-Boot configuration
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fs_type (str): File system type, e.g. 'ext4'
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size (int): Size of file system in bytes
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prefix (str): Prefix string of volume's file name
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src_dir (str): Root directory to use, or None for none
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size_gran (int): Size granularity of file system image in bytes
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Raises:
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CalledProcessError: if any error occurs when creating the filesystem
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"""
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fs_img = f'{prefix}.{fs_type}.img'
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fs_img = os.path.join(config.persistent_data_dir, fs_img)
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if fs_type == 'fat12':
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mkfs_opt = '-F 12'
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elif fs_type == 'fat16':
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mkfs_opt = '-F 16'
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elif fs_type == 'fat32':
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mkfs_opt = '-F 32'
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else:
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mkfs_opt = ''
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if re.match('fat', fs_type):
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fs_lnxtype = 'vfat'
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else:
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fs_lnxtype = fs_type
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if src_dir:
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if fs_lnxtype == 'ext4':
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mkfs_opt = mkfs_opt + ' -d ' + src_dir
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elif fs_lnxtype != 'vfat':
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raise ValueError(f'src_dir not implemented for fs {fs_lnxtype}')
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count = (size + size_gran - 1) // size_gran
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# Some distributions do not add /sbin to the default PATH, where mkfs lives
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if '/sbin' not in os.environ["PATH"].split(os.pathsep):
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os.environ["PATH"] += os.pathsep + '/sbin'
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try:
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check_call(f'rm -f {fs_img}', shell=True)
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check_call(f'dd if=/dev/zero of={fs_img} bs={size_gran} count={count}',
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shell=True)
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check_call(f'mkfs.{fs_lnxtype} {mkfs_opt} {fs_img}', shell=True)
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if fs_type == 'ext4':
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sb_content = check_output(f'tune2fs -l {fs_img}',
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shell=True).decode()
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if 'metadata_csum' in sb_content:
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check_call(f'tune2fs -O ^metadata_csum {fs_img}', shell=True)
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elif fs_lnxtype == 'vfat' and src_dir:
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check_call(f'mcopy -i {fs_img} -vsmpQ {src_dir}/* ::/', shell=True)
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return fs_img
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except CalledProcessError:
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call(f'rm -f {fs_img}', shell=True)
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raise
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# Just for trying out
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if __name__ == "__main__":
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import collections
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CNF= collections.namedtuple('config', 'persistent_data_dir')
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mk_fs(CNF('.'), 'ext4', 0x1000000, 'pref')
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