Use of a Linux initramfs to fully automate the bootstrapping process
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#!/usr/bin/env python3
"""System A"""
# SPDX-License-Identifier: GPL-3.0-or-later
# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
# SPDX-FileCopyrightText: 2021 Melg Eight <public.melg8@gmail.com>
import hashlib
import os
from distutils.dir_util import copy_tree
import shutil
import requests
from lib.utils import mount, umount, copytree, get_target
class SysA:
"""
Class responsible for preparing sources for System A.
"""
def __init__(self, arch, preserve_tmp, tmpdir, force_timestamps):
self.git_dir = os.path.dirname(os.path.join(__file__))
self.arch = arch
self.preserve_tmp = preserve_tmp
if tmpdir is None:
self.tmp_dir = os.path.join(self.git_dir, 'sysa', 'tmp')
else:
self.tmp_dir = tmpdir
self.sysa_dir = os.path.join(self.git_dir, 'sysa')
self.after_dir = os.path.join(self.tmp_dir, 'after')
self.force_timestamps = force_timestamps
self.prepare()
def __del__(self):
if not self.preserve_tmp:
print("Unmounting tmpfs from %s" % (self.tmp_dir))
umount(self.tmp_dir)
os.rmdir(self.tmp_dir)
def check_file(self, file_name):
"""Check hash of downloaded source file."""
checksum_store = os.path.join(self.git_dir, 'SHA256SUMS.sources')
with open(checksum_store) as checksum_file:
hashes = checksum_file.read().splitlines()
for hash_line in hashes:
if os.path.basename(file_name) in hash_line:
# Hash is in store, check it
expected_hash = hash_line.split()[0]
with open(file_name, "rb") as downloaded_file:
downloaded_content = downloaded_file.read() # read entire file as bytes
readable_hash = hashlib.sha256(downloaded_content).hexdigest()
if expected_hash == readable_hash:
return
raise Exception("Checksum mismatch")
raise Exception("File checksum is not yet recorded")
def download_file(self, url, file_name=None):
"""
Download a single source archive.
"""
cache_dir = os.path.join(self.git_dir, 'sources')
# Automatically determine file name based on URL.
if file_name is None:
file_name = os.path.basename(url)
abs_file_name = os.path.join(cache_dir, file_name)
# Create a cache directory for downloaded sources
if not os.path.isdir(cache_dir):
os.mkdir(cache_dir)
# Actually download the file
if not os.path.isfile(abs_file_name):
print("Downloading: %s" % (file_name))
response = requests.get(url, allow_redirects=True, stream=True)
if response.status_code == 200:
with open(abs_file_name, 'wb') as target_file:
target_file.write(response.raw.read())
else:
raise Exception("Download failed.")
# Check SHA256 hash
self.check_file(abs_file_name)
return abs_file_name
def get_file(self, url, output=None):
"""
Download and prepare source packages
url can be either:
1. a single URL
2. list of URLs to download. In this case the first URL is the primary URL
from which we derive the name of package directory
output can be used to override file name of the downloaded file(s).
"""
# Single URL
if isinstance(url, str):
assert output is None or isinstance(output, str)
file_name = url if output is None else output
urls = [url]
outputs = [output]
# Multiple URLs
elif isinstance(url, list):
assert output is None or len(output) == len(url)
file_name = url[0] if output is None else output[0]
urls = url
outputs = output if output is not None else [None] * len(url)
else:
raise TypeError("url must be either a string or a list of strings")
# Determine installation directory
target_name = get_target(file_name)
target_src_dir = os.path.join(self.after_dir, target_name, 'src')
# Install base files
src_tree = os.path.join(self.sysa_dir, target_name)
copytree(src_tree, self.after_dir)
if not os.path.isdir(target_src_dir):
os.mkdir(target_src_dir)
for i, _ in enumerate(urls):
# Download files into cache directory
tarball = self.download_file(urls[i], outputs[i])
# Install sources into target directory
shutil.copy2(tarball, target_src_dir)
def prepare(self):
"""
Prepare directory structure for System A.
We create an empty tmpfs, unpack stage0-posix.
Rest of the files are unpacked into more structured directory /after
"""
if not os.path.isdir(self.tmp_dir):
os.mkdir(self.tmp_dir)
print("Mounting tmpfs on %s" % (self.tmp_dir))
mount('tmpfs', self.tmp_dir, 'tmpfs', 'size=8G')
self.stage0_posix()
self.after()
def stage0_posix(self):
"""Copy in all of the stage0-posix"""
stage0_posix_base_dir = os.path.join(self.sysa_dir, 'stage0-posix', 'src')
stage0_posix_arch_dir = os.path.join(stage0_posix_base_dir, self.arch)
copy_tree(stage0_posix_arch_dir, self.tmp_dir)
m2_planet_dir = os.path.join(stage0_posix_base_dir, 'M2-Planet')
copytree(m2_planet_dir, self.tmp_dir)
# M2libc
m2libc_dir = os.path.join(stage0_posix_base_dir, 'M2libc')
copytree(m2libc_dir, self.tmp_dir)
# mescc-tools
mescc_tools_dir = os.path.join(stage0_posix_base_dir, 'mescc-tools')
copytree(mescc_tools_dir, self.tmp_dir)
# mescc-tools-extra
# Some additional tools such as cp, chmod, untar and ungz
mescc_tools_extra_dir = os.path.join(stage0_posix_base_dir, 'mescc-tools-extra')
copytree(mescc_tools_extra_dir, self.tmp_dir)
# bootstrap seeds
bootstrap_seeds_dir = os.path.join(self.sysa_dir, 'stage0-posix', 'src', 'bootstrap-seeds')
copytree(bootstrap_seeds_dir, self.tmp_dir)
kaem_optional_seed = os.path.join(bootstrap_seeds_dir, 'POSIX',
self.arch, 'kaem-optional-seed')
shutil.copy2(kaem_optional_seed, os.path.join(self.tmp_dir, 'init'))
# stage0-posix hook to continue running live-bootstrap
shutil.copy2(os.path.join(self.sysa_dir, 'after.kaem'),
os.path.join(self.tmp_dir, 'after.kaem'))
# create directories needed
os.mkdir(os.path.join(self.tmp_dir, 'bin'))
# stage0-posix checksums
shutil.copy2(os.path.join(stage0_posix_base_dir, self.arch + '.answers'),
os.path.join(self.tmp_dir, self.arch + '.answers'))
def after(self):
"""
Prepare sources in /after directory.
After stage0-posix we get into our own directory because
the stage0-posix one is hella messy.
"""
self.create_configuration_file()
self.deploy_extra_files()
self.get_packages()
def create_configuration_file(self):
"""
Creates bootstrap.cfg file which would contain options used to
customize bootstrap.
"""
os.mkdir(self.after_dir)
config_path = os.path.join(self.after_dir, "bootstrap.cfg")
with open(config_path, "w") as config:
config.write("FORCE_TIMESTAMPS=" + str(self.force_timestamps))
def deploy_extra_files(self):
"""Deploy misc files"""
extra_files = ['helpers.sh', 'run.sh', 'run2.sh']
for extra_file in extra_files:
shutil.copy2(os.path.join(self.sysa_dir, extra_file), self.after_dir)
shutil.copy2(os.path.join(self.git_dir, 'SHA256SUMS.sources'), self.after_dir)
# pylint: disable=line-too-long,too-many-statements
def get_packages(self):
"""Prepare remaining sources"""
# mes-0.22 snapshot with m2 fixes
self.get_file(["https://github.com/oriansj/mes-m2/archive/a7522f26ee020dc498219d0122ea1b7d345bcdd5.tar.gz",
"https://download.savannah.gnu.org/releases/nyacc/nyacc-1.00.2.tar.gz"],
output=["mes.tar.gz", "nyacc-1.00.2.tar.gz"])
# tcc 0.9.26 patched by janneke
self.get_file("https://lilypond.org/janneke/tcc/tcc-0.9.26-1136-g5bba73cc.tar.gz", output="tcc-0.9.26.tar.gz")
# mes 0.23 (meslibc)
self.get_file("https://mirrors.kernel.org/gnu/mes/mes-0.23.tar.gz")
# gzip 1.2.4
self.get_file("https://mirrors.kernel.org/gnu/gzip/gzip-1.2.4.tar.gz")
# tar 1.12
self.get_file("https://mirrors.kernel.org/gnu/tar/tar-1.12.tar.gz")
# sed 4.0.9
self.get_file("https://mirrors.kernel.org/gnu/sed/sed-4.0.9.tar.gz")
# patch 2.5.9
self.get_file("https://ftp.gnu.org/pub/gnu/patch/patch-2.5.9.tar.gz")
# make 3.80
self.get_file("https://mirrors.kernel.org/gnu/make/make-3.80.tar.gz")
# bzip2 1.0.8
self.get_file("https://sourceware.org/pub/bzip2/bzip2-1.0.8.tar.gz")
# tcc 0.9.27
self.get_file("https://download.savannah.gnu.org/releases/tinycc/tcc-0.9.27.tar.bz2")
# coreutils 5.0
self.get_file("https://mirrors.kernel.org/gnu/coreutils/coreutils-5.0.tar.bz2")
# heirloom-devtools
self.get_file("http://downloads.sourceforge.net/project/heirloom/heirloom-devtools/070527/heirloom-devtools-070527.tar.bz2")
# bash 2.05b
self.get_file("https://ftp.gnu.org/pub/gnu/bash/bash-2.05b.tar.gz")
# flex 2.5.11
self.get_file("http://download.nust.na/pub2/openpkg1/sources/DST/flex/flex-2.5.11.tar.gz")
# musl 1.1.24
self.get_file("https://musl.libc.org/releases/musl-1.1.24.tar.gz")
# m4 1.4.7
self.get_file("https://mirrors.kernel.org/gnu/m4/m4-1.4.7.tar.gz")
# flex 2.6.4
self.get_file("https://github.com/westes/flex/releases/download/v2.6.4/flex-2.6.4.tar.gz")
# bison 3.4.1
self.get_file("https://mirrors.kernel.org/gnu/bison/bison-3.4.1.tar.gz")
# grep 2.4
self.get_file("https://mirrors.kernel.org/gnu/grep/grep-2.4.tar.gz")
# diffutils 2.7
self.get_file("https://mirrors.kernel.org/gnu/diffutils/diffutils-2.7.tar.gz")
# coreutils 6.10
self.get_file("https://mirrors.kernel.org/gnu/coreutils/coreutils-6.10.tar.gz")
# gawk 3.0.4
self.get_file("https://mirrors.kernel.org/gnu/gawk/gawk-3.0.4.tar.gz")
# perl 5.000
self.get_file("https://github.com/Perl/perl5/archive/perl-5.000.tar.gz")
# perl 5.003
self.get_file("https://github.com/Perl/perl5/archive/perl-5.003.tar.gz")
# perl 5.004_05
self.get_file("https://www.cpan.org/src/5.0/perl5.004_05.tar.gz")
# perl 5.005_03
self.get_file("https://www.cpan.org/src/5.0/perl5.005_03.tar.gz")
# perl 5.6.2
self.get_file("https://www.cpan.org/src/5.0/perl-5.6.2.tar.gz")
# autoconf 2.52
self.get_file("https://mirrors.kernel.org/gnu/autoconf/autoconf-2.52.tar.bz2")
# automake 1.6.3
self.get_file("https://mirrors.kernel.org/gnu/automake/automake-1.6.3.tar.bz2")
# automake 1.4-p6
self.get_file("https://mirrors.kernel.org/gnu/automake/automake-1.4-p6.tar.gz")
# autoconf 2.13
self.get_file("https://mirrors.kernel.org/gnu/autoconf/autoconf-2.13.tar.gz")
# autoconf 2.12
self.get_file("https://mirrors.kernel.org/gnu/autoconf/autoconf-2.12.tar.gz")
# libtool 1.4
self.get_file("https://mirrors.kernel.org/gnu/libtool/libtool-1.4.tar.gz")
# binutils 2.14
self.get_file("https://mirrors.kernel.org/gnu/binutils/binutils-2.14.tar.bz2")
# autoconf 2.53
self.get_file("https://mirrors.kernel.org/gnu/autoconf/autoconf-2.53.tar.bz2")
# automake 1.7
self.get_file("https://mirrors.kernel.org/gnu/automake/automake-1.7.tar.bz2")
# autoconf 2.54
self.get_file("https://mirrors.kernel.org/gnu/autoconf/autoconf-2.54.tar.bz2")
# autoconf 2.55
self.get_file("https://mirrors.kernel.org/gnu/autoconf/autoconf-2.55.tar.bz2")
# automake 1.7.8
self.get_file("https://mirrors.kernel.org/gnu/automake/automake-1.7.8.tar.bz2")
# autoconf 2.57
self.get_file("https://mirrors.kernel.org/gnu/autoconf/autoconf-2.57.tar.bz2")
# autoconf 2.59
self.get_file("https://mirrors.kernel.org/gnu/autoconf/autoconf-2.59.tar.bz2")
# automake 1.8.5
self.get_file("https://mirrors.kernel.org/gnu/automake/automake-1.8.5.tar.bz2")
# help2man 1.36.4
self.get_file("https://mirrors.kernel.org/gnu/help2man/help2man-1.36.4.tar.gz")
# autoconf 2.61
self.get_file("https://mirrors.kernel.org/gnu/autoconf/autoconf-2.61.tar.bz2")
# automake 1.9.6
self.get_file("https://mirrors.kernel.org/gnu/automake/automake-1.9.6.tar.bz2")
# findutils 4.2.33
self.get_file(["https://mirrors.kernel.org/gnu/findutils/findutils-4.2.33.tar.gz",
"https://git.savannah.gnu.org/cgit/gnulib.git/snapshot/gnulib-8e128e.tar.gz"])
# libtool 2.2.4
self.get_file("https://mirrors.kernel.org/gnu/libtool/libtool-2.2.4.tar.bz2")
# automake 1.10.3
self.get_file("https://mirrors.kernel.org/gnu/automake/automake-1.10.3.tar.bz2")
# autoconf 2.64
self.get_file("https://mirrors.kernel.org/gnu/autoconf/autoconf-2.64.tar.bz2")
# gcc 4.0.4
self.get_file("https://mirrors.kernel.org/gnu/gcc/gcc-4.0.4/gcc-core-4.0.4.tar.bz2",
output="gcc-4.0.4.tar.bz2")
# musl 1.2.2
self.get_file("https://musl.libc.org/releases/musl-1.2.2.tar.gz")
# bash 5.1
self.get_file("https://mirrors.kernel.org/gnu/bash/bash-5.1.tar.gz")
# xz 5.0.5
self.get_file("https://tukaani.org/xz/xz-5.0.5.tar.bz2")
# automake 1.11.2
self.get_file("https://mirrors.kernel.org/gnu/automake/automake-1.11.2.tar.bz2")
# autoconf 2.69
self.get_file("https://mirrors.kernel.org/gnu/autoconf/autoconf-2.69.tar.xz")
# automake 1.15.1
self.get_file("https://mirrors.kernel.org/gnu/automake/automake-1.15.1.tar.xz")
# tar 1.34
self.get_file(["https://mirrors.kernel.org/gnu/tar/tar-1.34.tar.xz",
"https://git.savannah.gnu.org/cgit/gnulib.git/snapshot/gnulib-30820c.tar.gz"])
# coreutils 8.32
self.get_file(["https://git.savannah.gnu.org/cgit/coreutils.git/snapshot/coreutils-8.32.tar.gz",
"https://git.savannah.gnu.org/cgit/gnulib.git/snapshot/gnulib-d279bc.tar.gz"])
# pkg-config 0.29.2
self.get_file("https://pkgconfig.freedesktop.org/releases/pkg-config-0.29.2.tar.gz")
# make 4.2.1
self.get_file("https://ftp.gnu.org/gnu/make/make-4.2.1.tar.gz")
# gmp 6.2.1
self.get_file("https://mirrors.kernel.org/gnu/gmp/gmp-6.2.1.tar.xz")
# autoconf archive 2021.02.19
self.get_file("https://mirrors.kernel.org/gnu/autoconf-archive/autoconf-archive-2021.02.19.tar.xz")
# mpfr 4.1.0
self.get_file("https://mirrors.kernel.org/gnu/mpfr/mpfr-4.1.0.tar.xz")
# mpc 1.2.1
self.get_file("https://mirrors.kernel.org/gnu/mpc/mpc-1.2.1.tar.gz")
# flex 2.5.33
self.get_file("http://download.nust.na/pub2/openpkg1/sources/DST/flex/flex-2.5.33.tar.gz")
# bison 2.3
self.get_file(["https://mirrors.kernel.org/gnu/bison/bison-2.3.tar.bz2",
"https://git.savannah.gnu.org/cgit/gnulib.git/snapshot/gnulib-b28236b.tar.gz"])
# bison 3.4.2
self.get_file(["https://mirrors.kernel.org/gnu/bison/bison-3.4.2.tar.xz",
"https://git.savannah.gnu.org/cgit/gnulib.git/snapshot/gnulib-672663a.tar.gz"])
# perl 5.10.5
self.get_file("https://www.cpan.org/src/5.0/perl-5.10.1.tar.bz2")
# dist 3.5-236
# Debian's version is used because upstream is not to be found (dead?)
self.get_file("https://salsa.debian.org/perl-team/interpreter/dist/-/archive/d1de81f/dist-d1de81f.tar.gz",
output="dist-3.5-236.tar.gz")
# perl 5.32.1
self.get_file(["https://www.cpan.org/src/5.0/perl-5.32.1.tar.xz",
"https://salsa.debian.org/perl-team/interpreter/perl/-/archive/5f2dc80/perl-5f2dc80.tar.bz2"])
# automake 1.16.3
self.get_file("https://mirrors.kernel.org/gnu/automake/automake-1.16.3.tar.xz")
# patch 2.7.6
self.get_file(["https://mirrors.kernel.org/gnu/patch/patch-2.7.6.tar.xz",
"https://git.savannah.gnu.org/cgit/gnulib.git/snapshot/gnulib-e017871.tar.gz"])
# gettext 0.21
self.get_file(["https://mirrors.kernel.org/gnu/gettext/gettext-0.21.tar.xz",
"https://git.savannah.gnu.org/cgit/gnulib.git/snapshot/gnulib-7daa86f.tar.gz"])
# texinfo 6.7
self.get_file(["https://mirrors.kernel.org/gnu/texinfo/texinfo-6.7.tar.xz",
"https://git.savannah.gnu.org/cgit/gnulib.git/snapshot/gnulib-b81ec69.tar.gz"])
# libunistring 0.9.10
self.get_file(["https://mirrors.kernel.org/gnu/libunistring/libunistring-0.9.10.tar.xz",
"https://git.savannah.gnu.org/cgit/gnulib.git/snapshot/gnulib-52a06cb3.tar.gz"])