100 lines
3.7 KiB
Python
100 lines
3.7 KiB
Python
# Copyright 2020 Oliver Smith
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# SPDX-License-Identifier: GPL-3.0-or-later
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import logging
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import os
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import glob
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import filecmp
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import pmb.chroot
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import pmb.chroot.apk_static
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import pmb.config
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import pmb.config.workdir
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import pmb.helpers.repo
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import pmb.helpers.run
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import pmb.parse.arch
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def copy_resolv_conf(args, suffix="native"):
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"""
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Use pythons super fast file compare function (due to caching)
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and copy the /etc/resolv.conf to the chroot, in case it is
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different from the host.
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If the file doesn't exist, create an empty file with 'touch'.
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"""
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host = "/etc/resolv.conf"
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chroot = args.work + "/chroot_" + suffix + host
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if os.path.exists(host):
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if not os.path.exists(chroot) or not filecmp.cmp(host, chroot):
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pmb.helpers.run.root(args, ["cp", host, chroot])
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else:
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pmb.helpers.run.root(args, ["touch", chroot])
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def setup_qemu_emulation(args, suffix):
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arch = pmb.parse.arch.from_chroot_suffix(args, suffix)
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if not pmb.parse.arch.cpu_emulation_required(args, arch):
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return
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chroot = args.work + "/chroot_" + suffix
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arch_qemu = pmb.parse.arch.alpine_to_qemu(arch)
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# mount --bind the qemu-user binary
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pmb.chroot.binfmt.register(args, arch)
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pmb.helpers.mount.bind_file(args, args.work + "/chroot_native/usr/bin/qemu-" + arch_qemu,
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chroot + "/usr/bin/qemu-" + arch_qemu + "-static",
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create_folders=True)
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def init(args, suffix="native"):
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# When already initialized: just prepare the chroot
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chroot = args.work + "/chroot_" + suffix
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arch = pmb.parse.arch.from_chroot_suffix(args, suffix)
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pmb.chroot.mount(args, suffix)
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setup_qemu_emulation(args, suffix)
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if os.path.islink(chroot + "/bin/sh"):
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copy_resolv_conf(args, suffix)
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pmb.chroot.apk.update_repository_list(args, suffix)
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return
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# Require apk-tools-static
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pmb.chroot.apk_static.init(args)
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logging.info("(" + suffix + ") install alpine-base")
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# Initialize cache
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apk_cache = args.work + "/cache_apk_" + arch
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pmb.helpers.run.root(args, ["ln", "-s", "-f", "/var/cache/apk", chroot +
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"/etc/apk/cache"])
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# Initialize /etc/apk/keys/, resolv.conf, repositories
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for key in glob.glob(pmb.config.apk_keys_path + "/*.pub"):
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pmb.helpers.run.root(args, ["cp", key, args.work +
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"/config_apk_keys/"])
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copy_resolv_conf(args, suffix)
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pmb.chroot.apk.update_repository_list(args, suffix)
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pmb.config.workdir.chroot_save_date(args, suffix)
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# Install alpine-base
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pmb.helpers.repo.update(args, arch)
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pmb.chroot.apk_static.run(args, ["--no-progress", "--root", chroot,
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"--cache-dir", apk_cache, "--initdb", "--arch", arch,
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"add", "alpine-base"])
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# Building chroots: create "pmos" user, add symlinks to /home/pmos
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if not suffix.startswith("rootfs_"):
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pmb.chroot.root(args, ["adduser", "-D", "pmos", "-u",
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pmb.config.chroot_uid_user], suffix, auto_init=False)
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# Create the links (with subfolders if necessary)
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for target, link_name in pmb.config.chroot_home_symlinks.items():
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link_dir = os.path.dirname(link_name)
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if not os.path.exists(chroot + link_dir):
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pmb.chroot.user(args, ["mkdir", "-p", link_dir], suffix)
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if not os.path.exists(chroot + target):
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pmb.chroot.root(args, ["mkdir", "-p", target], suffix)
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pmb.chroot.user(args, ["ln", "-s", target, link_name], suffix)
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pmb.chroot.root(args, ["chown", "pmos:pmos", target],
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suffix)
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