67 lines
2.2 KiB
Python
Executable File
67 lines
2.2 KiB
Python
Executable File
#!/usr/bin/env python3
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"""
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This file contains a few self-contained helper functions
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"""
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# SPDX-License-Identifier: GPL-3.0-or-later
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# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
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# SPDX-FileCopyrightText: 2021 fosslinux <fosslinux@aussies.space>
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import os
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import shutil
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import subprocess
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import sys
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def run(*args, **kwargs):
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"""A small wrapper around subprocess.run"""
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arguments = [str(arg) for arg in args]
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if kwargs.pop('verbose', False):
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print(arguments)
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try:
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return subprocess.run(arguments, check=True, **kwargs)
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except subprocess.CalledProcessError:
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print("Bootstrapping failed")
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sys.exit(1)
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def create_disk(image, disk_type, fs_type, size):
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"""Create a disk image, with a filesystem on it"""
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run('truncate', '-s', size, image)
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# First find the device we will use, then actually use it
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loop_dev = run('sudo', 'losetup', '-f', capture_output=True).stdout.decode().strip()
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run('sudo', 'losetup', loop_dev, image)
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# Create the partition
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run('sudo', 'parted', '--script', image, 'mklabel', disk_type, 'mkpart',
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'primary', 'ext4', '0%', '100%')
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run('sudo', 'partprobe', loop_dev)
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run('sudo', 'mkfs.' + fs_type, loop_dev + "p1")
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return loop_dev
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def mount(source, target, fs_type, options='', **kwargs):
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"""Mount filesystem"""
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run('sudo', 'mount', source, target, '-t', fs_type, '-o', options, **kwargs)
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def umount(target, **kwargs):
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"""Unmount filesystem"""
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run('sudo', 'umount', '--recursive', target, **kwargs)
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def copytree(src, dst, ignore=shutil.ignore_patterns('*.git*')):
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"""Copy directory tree into another directory"""
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file_name = os.path.basename(src)
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shutil.copytree(src, os.path.join(dst, file_name), ignore=ignore)
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def get_target(file_name):
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"""Determine package installation directory"""
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bname = os.path.basename(file_name)
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# Remove file extension. This is not completely trivial because
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# tar archives often come with double extensions.
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first_ext = os.path.splitext(os.path.basename(bname))
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second_ext = os.path.splitext(first_ext[0])
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if second_ext[1] == '.tar':
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bname = second_ext[0]
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else:
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bname = first_ext[0]
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return bname
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