pmbootstrap/pmb/chroot/init.py

122 lines
4.8 KiB
Python

"""
Copyright 2017 Oliver Smith
This file is part of pmbootstrap.
pmbootstrap is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
pmbootstrap is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pmbootstrap. If not, see <http://www.gnu.org/licenses/>.
"""
import logging
import os
import shlex
import glob
import filecmp
import pmb.chroot
import pmb.chroot.apk_static
import pmb.config
import pmb.helpers.repo
import pmb.helpers.run
import pmb.parse.arch
def copy_resolv_conf(args, suffix="native"):
"""
Use pythons super fast file compare function (due to caching)
and copy the /etc/resolv.conf to the chroot, in case it is
different from the host.
"""
host = "/etc/resolv.conf"
chroot = args.work + "/chroot_" + suffix + host
if not os.path.exists(chroot) or not filecmp.cmp(host, chroot):
pmb.helpers.run.root(args, ["cp", host, chroot])
def init(args, suffix="native"):
# When already initialized: just prepare the chroot
chroot = args.work + "/chroot_" + suffix
arch = pmb.parse.arch.from_chroot_suffix(args, suffix)
pmb.chroot.mount(args, suffix)
if os.path.islink(chroot + "/bin/sh"):
if suffix != "native":
pmb.chroot.binfmt.register(args, arch)
copy_resolv_conf(args, suffix)
return
# Require apk-tools-static
pmb.chroot.apk_static.init(args)
# Non-native chroot: require qemu-user-static
if suffix != "native":
pmb.chroot.apk.install(args, ["qemu-user-static-repack",
"qemu-user-static-repack-binfmt"])
pmb.chroot.binfmt.register(args, arch)
logging.info("(" + suffix + ") install alpine-base")
# Initialize cache
apk_cache = args.work + "/cache_apk_" + arch
pmb.helpers.run.root(args, ["ln", "-s", "/var/cache/apk", chroot +
"/etc/apk/cache"])
# Copy /etc/apk/keys/ and resolv.conf
logging.debug(pmb.config.apk_keys_path)
for key in glob.glob(pmb.config.apk_keys_path + "/*.pub"):
pmb.helpers.run.root(args, ["cp", key, args.work +
"/config_apk_keys/"])
copy_resolv_conf(args, suffix)
# Write /etc/apk/repositories
repos_path = chroot + "/etc/apk/repositories"
if not os.path.exists(repos_path):
for line in pmb.helpers.repo.urls(args):
pmb.helpers.run.root(args, ["sh", "-c",
"echo " + shlex.quote(line) + " >> " + repos_path])
# Install alpine-base (no clean exit for non-native chroot!)
pmb.chroot.apk_static.run(args, ["-U", "--root", chroot,
"--cache-dir", apk_cache, "--initdb", "--arch", arch,
"add", "alpine-base"], check=(suffix == "native"))
# Create device nodes
for dev in pmb.config.chroot_device_nodes:
path = chroot + "/dev/" + str(dev[4])
if not os.path.exists(path):
pmb.helpers.run.root(args, ["mknod",
"-m", str(dev[0]), # permissions
path, # name
str(dev[1]), # type
str(dev[2]), # major
str(dev[3]), # minor
])
if not os.path.exists(path):
raise RuntimeError("Failed to create device node in chroot for " +
dev[4] + "! (This might be caused by setting the work folder" +
" to an eCryptfs folder.)")
# Non-native chroot: install qemu-user-binary, run apk fix
if suffix != "native":
arch_debian = pmb.parse.arch.alpine_to_debian(arch)
pmb.helpers.run.root(args, ["cp", args.work +
"/chroot_native/usr/bin/qemu-" + arch_debian + "-static",
chroot + "/usr/bin/qemu-" + arch_debian + "-static"])
pmb.chroot.root(args, ["apk", "fix"], suffix,
auto_init=False)
# Add user (-D: don't assign password)
logging.debug("Add user")
pmb.chroot.root(args, ["adduser", "-D", "user", "-u", pmb.config.chroot_uid_user],
suffix, auto_init=False)
pmb.chroot.root(args, ["chown", "-R", "user:user", "/home/user"],
suffix)