Initial commit

Signed-off-by: BigfootACA <bigfoot@classfun.cn>

.gitignore

@@ -0,0 +1,54 @@
+*.rej
+*.orig
+*.swp
+*.save*
+*.o
+*.a
+*.out
+*.lib
+*.obj
+*.dll
+*.so
+*.exe
+*.gch
+*.plist
+*.mo
+*.gmo
+*.fd
+*.iso
+*.img
+*.img.*
+*.qcow2
+*.vhd
+*.vdi
+*.vmdk
+*.cpio
+*.cpio.*
+*.ttf
+*.ttc
+*.pcf
+*.pcf.*
+*.efi
+*.db
+vgcore.*
+/build
+initramfs*.*
+initrd*.*
+System.map*
+/cmake-build-*
+/.idea
+/.vscode
+/.cache
+CMakeCache.txt
+CMakeFiles
+Makefile
+cmake_install.cmake
+node_modules
+package-lock.json
+fonts.scale
+fonts.dir
+/config.json
+__pycache__
+/configs/custom/*
+/devices/custom/*
+!.gitkeep

LICENSE

@@ -0,0 +1,232 @@
+GNU GENERAL PUBLIC LICENSE
+Version 3, 29 June 2007
+
+Copyright © 2007 Free Software Foundation, Inc. <https://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
+
+Preamble
+
+The GNU General Public License is a free, copyleft license for software and other kinds of works.
+
+The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work released this way by its authors. You can apply it to your programs, too.
+
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+
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+
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+TERMS AND CONDITIONS
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+0. Definitions.
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+9. Acceptance Not Required for Having Copies.
+You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so.
+
+10. Automatic Licensing of Downstream Recipients.
+Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License.
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+
+11. Patents.
+A “contributor” is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor's “contributor version”.
+
+A contributor's “essential patent claims” are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, “control” includes the right to grant patent sublicenses in a manner consistent with the requirements of this License.
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+
+Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law.
+
+12. No Surrender of Others' Freedom.
+If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program.
+
+13. Use with the GNU Affero General Public License.
+Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply to the combination as such.
+
+14. Revised Versions of this License.
+The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU General Public License “or any later version” applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU General Public License, you may choose any version ever published by the Free Software Foundation.
+
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+
+Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version.
+
+15. Disclaimer of Warranty.
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+16. Limitation of Liability.
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+17. Interpretation of Sections 15 and 16.
+If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
+
+How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the “copyright” line and a pointer to where the full notice is found.
+
+     <one line to give the program's name and a brief idea of what it does.>
+     Copyright (C) <year>  <name of author>
+
+     This program 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.
+
+     This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:
+
+     <program>  Copyright (C) <year>  <name of author>
+     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+     This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an “about box”.
+
+You should also get your employer (if you work as a programmer) or school, if any, to sign a “copyright disclaimer” for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see <https://www.gnu.org/licenses/>.
+
+The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read <https://www.gnu.org/philosophy/why-not-lgpl.html>.

build.py

@@ -0,0 +1,8 @@
+#!/usr/bin/env python3
+import sys
+import os
+
+if __name__ == '__main__':
+	sys.path.insert(0, os.path.realpath(os.path.dirname(__file__)))
+	from builder.main import main
+	main()

builder/build/bootstrap.py

@@ -0,0 +1,152 @@
+import os
+import shutil
+from logging import getLogger
+from builder.disk import image
+from builder.build import mount, fstab, grub, user, filesystem
+from builder.build import locale, systemd, mkinitcpio, names
+from builder.build import pacman as pacman_build
+from builder.component import pacman as pacman_comp
+from builder.lib.context import ArchBuilderContext
+log = getLogger(__name__)
+
+
+def cleanup(ctx: ArchBuilderContext):
+	"""
+	Cleanup unneeded files for Arch Linux
+	"""
+	root = ctx.get_rootfs()
+
+	def rm_rf(path: str):
+		real = os.path.join(root, path)
+		if not os.path.exists(real): return
+		shutil.rmtree(real, True)
+
+	def del_child(path: str, prefix: str = None, suffix: str = None):
+		real = os.path.join(root, path)
+		if not os.path.exists(real): return
+		for file in os.listdir(real):
+			if prefix and not file.startswith(prefix): continue
+			if suffix and not file.endswith(suffix): continue
+			rm_rf(os.path.join(real, file))
+	rm_rf("var/log/pacman.log")
+	del_child("var/cache/pacman/pkg")
+	del_child("var/lib/pacman/sync")
+	del_child("etc", suffix="-")
+	rm_rf("etc/.pwd.lock")
+
+
+def do_copy(ctx: ArchBuilderContext, src: str, dst: str):
+	"""
+	Copying rootfs via rsync
+	"""
+	rsrc = os.path.realpath(src)
+	rdst = os.path.realpath(dst)
+	log.info("start copying rootfs...")
+	ret = ctx.run_external([
+		"rsync", "--archive", "--recursive",
+		"--delete", "--info=progress2",
+		rsrc + os.sep, rdst
+	])
+	os.sync()
+	if ret != 0: raise OSError("rsync failed")
+
+
+def build_rootfs(ctx: ArchBuilderContext):
+	"""
+	Build whole rootfs and generate image
+	"""
+	log.info("building rootfs")
+
+	# create folders
+	os.makedirs(ctx.work, mode=0o755, exist_ok=True)
+	os.makedirs(ctx.get_rootfs(), mode=0o0755, exist_ok=True)
+	os.makedirs(ctx.get_output(), mode=0o0755, exist_ok=True)
+	os.makedirs(ctx.get_mount(), mode=0o0755, exist_ok=True)
+
+	# build rootfs contents
+	if not ctx.repack:
+		try:
+			# initialize basic folders
+			mount.init_rootfs(ctx)
+
+			# initialize mount points for chroot
+			mount.init_mount(ctx)
+
+			# initialize pacman context
+			pacman = pacman_comp.Pacman(ctx)
+
+			# initialize build time keyring
+			pacman.init_keyring()
+
+			# trust pgp key in config (for pacman database)
+			pacman_build.trust_all(ctx, pacman)
+
+			# update pacman repos databases
+			pacman.load_databases()
+
+			# install all keyring packages before other packages
+			pacman_build.proc_pacman_keyring(ctx, pacman)
+
+			# real install all packages
+			pacman_build.proc_pacman(ctx, pacman)
+
+			# reload user databases after install packages
+			ctx.reload_passwd()
+
+			# create custom users and groups
+			user.proc_usergroup(ctx)
+
+			# build time files add/remove hooks
+			filesystem.proc_filesystem(ctx)
+
+			# enable / disable systemd units
+			systemd.proc_systemd(ctx)
+
+			# setup locale (timezone / i18n language / fonts / input methods)
+			locale.proc_locale(ctx)
+
+			# setup system names (environments / hosts / hostname / machine-info)
+			names.proc_names(ctx)
+
+			# recreate initramfs
+			mkinitcpio.proc_mkinitcpio(ctx)
+
+			# reset machine-id (never duplicated machine id)
+			systemd.proc_machine_id(ctx)
+		finally:
+			# kill spawned daemons (gpg-agent, dirmngr, ...)
+			ctx.cgroup.kill_all()
+
+			# remove mount points
+			mount.undo_mounts(ctx)
+
+		# cleanup unneeded files
+		cleanup(ctx)
+
+	# reload user database before create images
+	ctx.reload_passwd()
+
+	# create images and initialize bootloader
+	try:
+		# create disk and filesystem image
+		image.proc_image(ctx)
+
+		# generate fstab
+		fstab.proc_fstab(ctx)
+
+		# install grub bootloader
+		grub.proc_grub(ctx)
+
+		# running add files hooks (for bootloader settings)
+		filesystem.add_files_all(ctx, "post-fs")
+
+		# copy rootfs into image
+		do_copy(ctx, ctx.get_rootfs(), ctx.get_mount())
+	finally:
+		ctx.cleanup()
+
+	# finish
+	log.info("build done!")
+	os.sync()
+	log.info(f"your images are in {ctx.get_output()}")
+	ctx.run_external(["ls", "-lh", ctx.get_output()])

builder/build/filesystem.py

@@ -0,0 +1,142 @@
+import os
+import shutil
+from logging import getLogger
+from builder.lib import utils
+from builder.component import user
+from builder.lib.config import ArchBuilderConfigError
+from builder.lib.context import ArchBuilderContext
+log = getLogger(__name__)
+
+
+def chroot_run(
+	ctx: ArchBuilderContext,
+	cmd: str | list[str],
+	cwd: str = None,
+	env: dict = None,
+	stdin: str | bytes = None,
+) -> int:
+	"""
+	Chroot into rootfs and run programs
+	If you are running a cross build, you need install qemu-user-static-binfmt
+	"""
+	if not ctx.chroot:
+		raise RuntimeError("rootfs is not ready for chroot")
+	path = ctx.get_rootfs()
+	args = ["chroot", path]
+	args.extend(utils.parse_cmd_args(cmd))
+	return ctx.run_external(args, cwd, env, stdin)
+
+
+def proc_mkdir(ctx: ArchBuilderContext, file: dict, path: str):
+	root = ctx.get_rootfs()
+	dir_uid, dir_gid, dir_mode = 0, 0, 0o0755
+	if "mkdir" in file:
+		if type(file["mkdir"]) is bool:
+			# mkdir = False: skip mkdir
+			if not file["mkdir"]: return
+		elif type(file["mkdir"]) is dict:
+			if "mode" in file: dir_mode = int(file["mode"])
+			dir_uid, dir_gid = user.parse_user_from(ctx, file)
+	# mkdir recursive
+	def mkdir_loop(folder: str):
+		# strip end slash
+		if folder.endswith("/"): folder = folder[0:-1]
+		if len(folder) == 0: return
+
+		# resolve to rootfs
+		real = os.path.join(root, folder)
+		if os.path.exists(real): return
+
+		# create parent folder first
+		mkdir_loop(os.path.dirname(folder))
+
+		log.debug(f"create folder {real} with {dir_mode:04o}")
+		os.mkdir(real, mode=dir_mode)
+		log.debug(f"chown folder {real} to {dir_uid}:{dir_gid}")
+		os.chown(real, uid=dir_uid, gid=dir_gid)
+	mkdir_loop(os.path.dirname(path))
+
+
+def check_allowed(path: str, action: str):
+	"""
+	Check add / remove files is in allowed files
+	Why we cannot write into others folder?
+	1. Write to pacman managed folders (/usr, /opt, ...) WILL BREAK SYSTEM UPGRADE
+	2. Never add files to homes (/home/xxx, /root, ...),
+		when someone create new users, these configs will broken.
+	What if I want to write to other folders?
+	1. /usr/bin/ /usr/lib/ /opt/ ...: you should not add files here,
+		please make a package and install via pacman.
+	2. /home/xxx: add files into /etc/skel, they will copy when user create
+	3. /usr/lib/systemd/system: do not add service or override into here,
+		please use /etc/systemd/system (see Unit File Load Path in man:systemd.unit(5))
+	4. /run /tmp /dev: there are mount as virtual filesystem when booting,
+		you can use systemd-tmpfiles to create in these folders (/etc/tmpfiles.d)
+	Why these folder is writable
+	1. /etc/ is used for administrator configs
+	2. /boot/ is used for system boot up, you can put bootloaders configs into this folder
+	"""
+	if not path.startswith(("/etc/", "/boot/")):
+		raise ArchBuilderConfigError(f"{action} {path} is not allowed")
+
+
+def add_file(ctx: ArchBuilderContext, file: dict):
+	# at least path content
+	if "path" not in file:
+		raise ArchBuilderConfigError("no path set in file")
+	if "content" not in file:
+		raise ArchBuilderConfigError("no content set in file")
+	root = ctx.get_rootfs()
+	path: str = file["path"]
+	if path.startswith("/"): path = path[1:]
+	uid, gid = user.parse_user_from(ctx, file)
+
+	# file encoding. default to UTF-8
+	encode = file["encode"] if "encode" in file else "utf-8"
+
+	# follow symbolic links
+	follow = file["follow"] if "follow" in file else True
+
+	# files mode
+	mode = int(file["mode"]) if "mode" in file else 0o0644
+
+	check_allowed(file["path"], "add files into")
+
+	# create parent folders
+	proc_mkdir(ctx, file, path)
+
+	# resolve to rootfs
+	real = os.path.join(root, path)
+
+	if not follow and os.path.exists(real): os.remove(real)
+	log.debug(f"create file {real}")
+	with open(real, "wb") as f:
+		content: str = file["content"]
+		log.debug(
+			"write to %s with %s",
+			(real, content.strip())
+		)
+		f.write(content.encode(encode))
+	log.debug(f"chmod file {real} to {mode:04o}")
+	os.chmod(real, mode=mode)
+	log.debug(f"chown file {real} to {uid}:{gid}")
+	os.chown(real, uid=uid, gid=gid)
+	log.info("adding file %s successful", file["path"])
+
+
+def add_files_all(ctx: ArchBuilderContext, stage: str = None):
+	for file in ctx.get("filesystem.files", []):
+		cs = file["stage"] if "stage" in file else None
+		if cs != stage: continue
+		add_file(ctx, file)
+
+
+def remove_all(ctx: ArchBuilderContext):
+	for file in ctx.get("filesystem.remove", []):
+		check_allowed(file, "remove files from")
+		shutil.rmtree(file)
+
+
+def proc_filesystem(ctx: ArchBuilderContext):
+	add_files_all(ctx)
+	remove_all(ctx)

builder/build/fstab.py

@@ -0,0 +1,51 @@
+import os
+from logging import getLogger
+from builder.lib.context import ArchBuilderContext
+from builder.lib.utils import open_config
+log = getLogger(__name__)
+
+
+def write_fstab(ctx: ArchBuilderContext):
+	log.debug(
+		"generate fstab:\n\t%s",
+		ctx.fstab.to_mount_file("\n\t").strip()
+	)
+	path = os.path.join(ctx.get_rootfs(), "etc/fstab")
+	with open_config(path) as f:
+		ctx.fstab.write_mount_file(f)
+
+
+def mount_all(ctx: ArchBuilderContext):
+	path = ctx.get_mount()
+	root = ctx.get_rootfs()
+	if not os.path.exists(path):
+		os.mkdir(path, mode=0o0755)
+	if ctx.fstab[0].target != "/":
+		raise RuntimeError("no root to mount")
+	for mnt in ctx.fstab:
+		m = mnt.clone()
+		if m.source == "none": continue
+		if m.source not in ctx.fsmap:
+			raise RuntimeError(f"source {m.source} cannot map to host")
+		m.source = ctx.fsmap[m.source]
+		if m.target == "/": in_mnt, in_root = path, root
+		elif m.target.startswith("/"):
+			folder = m.target[1:]
+			in_mnt = os.path.join(path, folder)
+			in_root = os.path.join(root, folder)
+		elif m.fstype == "swap" or m.target == "none": continue
+		else: raise RuntimeError(f"target {m.target} cannot map to host")
+		if in_mnt:
+			m.target = in_mnt
+			if not os.path.exists(in_mnt):
+				os.makedirs(in_mnt, mode=0o0755)
+		if in_root and not os.path.exists(in_root):
+			os.makedirs(in_root, mode=0o0755)
+		m.mount()
+		ctx.mounted.insert(0, m)
+
+
+def proc_fstab(ctx: ArchBuilderContext):
+	ctx.fstab.resort()
+	write_fstab(ctx)
+	mount_all(ctx)

builder/build/grub.py

@@ -0,0 +1,292 @@
+import os
+import shutil
+from logging import getLogger
+from builder.lib.context import ArchBuilderContext
+from builder.lib.config import ArchBuilderConfigError
+from builder.lib.loop import loop_get_backing, loop_get_offset
+from builder.lib.blkid import Blkid
+from builder.lib.mount import MountPoint
+log = getLogger(__name__)
+
+
+blkid = Blkid()
+modules = [
+	"part_msdos", "part_gpt", "part_apple", "ext2", "fat", "ntfs", "sleep",
+	"ufs1", "ufs2", "cpio", "sleep", "search", "search_fs_file", "minicmd", 
+	"search_fs_uuid", "search_label", "reboot", "halt", "gzio", "serial",
+	"boot", "file", "f2fs", "iso9660", "hfs", "hfsplus", "zfs", "minix",
+	"memdisk", "sfs", "lvm", "http", "tftp", "udf", "xfs", "date", "echo",
+	"all_video", "btrfs", "disk", "configfile", "terminal",
+]
+
+
+def get_prop(
+	ctx: ArchBuilderContext,
+	name: str,
+	cfg: dict,
+	path: bool = False,
+	multi: bool = False,
+) -> str | None:
+	value = ctx.get(f"kernel.{name}", None)
+	if name in cfg: value = cfg[name]
+	if value is None: return None
+	if type(value) is str:
+		value = [value]
+	if len(value) == 0: return None
+	if path:
+		for i in range(len(value)):
+			if not value[i].startswith("/"):
+				value[i] = "/" + value[i]
+	if multi: value = " ".join(value)
+	else: value = value[0]
+	return value
+
+
+def fstype_to_mod(name: str) -> str:
+	match name:
+		case "ext3": return "ext2"
+		case "ext4": return "ext2"
+		case "vfat": return "fat"
+		case "fat12": return "fat"
+		case "fat16": return "fat"
+		case "fat32": return "fat"
+		case "msdos": return "fat"
+		case _: return name
+
+
+def gen_menuentry(ctx: ArchBuilderContext, cfg: dict) -> str:
+	ret = ""
+	name = cfg["name"] if "name" in cfg else "Linux"
+	kernel = get_prop(ctx, "kernel", cfg, True)
+	initramfs = get_prop(ctx, "initramfs", cfg, True, True)
+	devicetree = get_prop(ctx, "devicetree", cfg, True, True)
+	cmdline = get_prop(ctx, "cmdline", cfg, False, True)
+	path = get_prop(ctx, "path", cfg, False, False)
+	if kernel is None: raise ArchBuilderConfigError("no kernel for grub")
+	if cmdline is None: cmdline = ""
+	ret += f"menuentry '{name}' {{\n"
+	if path:
+		fs = ctx.fstab.find_target(path)
+		if fs is None or len(fs) == 0 or fs[0] is None:
+			raise ArchBuilderConfigError(f"mountpoint {path} not found")
+		dev = fs[0].source
+		if dev in ctx.fsmap: dev = ctx.fsmap[dev]
+		uuid = blkid.get_tag_value(None, "UUID", dev)
+		if uuid is None: raise RuntimeError(f"cannot detect uuid for {path}")
+		ret += "\tinsmod %s\n" % fstype_to_mod(fs[0].fstype)
+		ret += f"\tsearch --no-floppy --fs-uuid --set=root {uuid}\n"
+	if devicetree:
+		ret += "\techo 'Loading Device Tree...'\n"
+		ret += f"\tdevicetree {devicetree}\n"
+	ret += "\techo 'Loading Kernel...'\n"
+	ret += f"\tlinux {kernel} {cmdline}\n"
+	if initramfs:
+		ret += "\techo 'Loading Initramfs...'\n"
+		ret += f"\tinitrd {initramfs}\n"
+	ret += "\techo 'Booting...'\n"
+	ret += f"}}\n"
+	return ret
+
+
+def gen_basic(ctx: ArchBuilderContext) -> str:
+	ret = ""
+	ret += "insmod part_gpt\n"
+	ret += "insmod part_msdos\n"
+	ret += "insmod all_video\n"
+	ret += "terminal_input console\n"
+	ret += "terminal_output console\n"
+	ret += "if serial --unit=0 --speed=115200; then\n"
+	ret += "\tterminal_input --append console\n"
+	ret += "\tterminal_output --append console\n"
+	ret += "fi\n"
+	ret += "set timeout_style=menu\n"
+	timeout = ctx.get("bootloader.timeout", 5)
+	ret += f"set timeout={timeout}\n"
+	default = 0
+	items = ctx.get("bootloader.items", [])
+	for idx in range(len(items)):
+		item = items[idx]
+		if "default" in item and item["default"]:
+			default = idx
+	ret += f"set default={default}\n"
+	return ret
+
+
+def mkconfig(ctx: ArchBuilderContext) -> str:
+	ret = ""
+	ret += gen_basic(ctx)
+	for item in ctx.get("bootloader.items", []):
+		ret += gen_menuentry(ctx, item)
+	return ret
+
+
+def proc_targets(ctx: ArchBuilderContext, install: str):
+	copies = [".mod", ".lst"]
+	folder = os.path.join(ctx.get_rootfs(), "usr/lib/grub")
+	for target in ctx.get("grub.targets", []):
+		if "/" in target: raise ArchBuilderConfigError(f"bad target {target}")
+		base = os.path.join(folder, target)
+		if not os.path.exists(os.path.join(base, "linux.mod")):
+			raise ArchBuilderConfigError(f"target {target} not found")
+		dest = os.path.join(install, target)
+		os.makedirs(dest, mode=0o0755, exist_ok=True)
+		for file in os.listdir(base):
+			if not any((file.endswith(name) for name in copies)):
+				continue
+			shutil.copyfile(
+				os.path.join(base, file),
+				os.path.join(dest, file),
+			)
+		log.info(f"installed grub target {target}")
+
+
+def proc_config(ctx: ArchBuilderContext, install: str):
+	content = mkconfig(ctx)
+	cfg = os.path.join(install, "grub.cfg")
+	with open(cfg, "w") as f:
+		f.write(content)
+	log.info(f"generated grub config {cfg}")
+
+
+def efi_arch_name(target: str) -> str:
+	match target:
+		case "arm64-efi": return "aa64"
+		case "x86_64-efi": return "x64"
+		case "arm-efi": return "arm"
+		case "i386-efi": return "ia32"
+		case "riscv64-efi": return "riscv64"
+		case _: raise RuntimeError(
+			f"unsupported {target} for efi name"
+		)
+
+
+def efi_boot_name(target: str) -> str:
+	name = efi_arch_name(target)
+	return f"boot{name}.efi"
+
+
+def proc_mkimage_efi(ctx: ArchBuilderContext, target: str):
+	cmds = ["grub-mkimage"]
+	root = ctx.get_rootfs()
+	efi_folders = ["/boot", "/boot/efi", "/efi", "/esp"]
+	base = os.path.join(root, "usr/lib/grub", target)
+	install = ctx.get("grub.path", "/boot/grub")
+	if not target.endswith("-efi"):
+		raise RuntimeError("mkimage efi only for *-efi")
+	esp: MountPoint | None = None
+	grub: MountPoint | None = None
+	fdir = install + "/"
+	for mnt in ctx.fstab:
+		if fstype_to_mod(mnt.fstype) == "fat":
+			if mnt.target in efi_folders:
+				esp = mnt
+		tdir = mnt.target
+		if not tdir.endswith("/"): tdir += "/"
+		if fdir.startswith(tdir):
+			if (not grub) or mnt.level >= grub.level:
+				grub = mnt
+	if esp is None: raise RuntimeError("efi partiton not found")
+	if grub is None: raise RuntimeError("grub install folder not found")
+	esp_dest = esp.target
+	if esp_dest.startswith("/"): esp_dest = esp_dest[1:]
+	if not install.startswith("/"): install = "/" + install
+	if not install.startswith(grub.target):
+		raise RuntimeError("grub install prefix not found")
+	prefix = install[len(grub.target):]
+	if not prefix.startswith("/"): prefix = "/" + prefix
+	device = (ctx.fsmap[grub.source] if grub.source in ctx.fsmap else grub.source)
+	uuid = blkid.get_tag_value(None, "UUID", device)
+	if not uuid: raise RuntimeError(
+		"failed to detect uuid for grub install path"
+	)
+	efi_folder = os.path.join(root, esp_dest)
+	grub_folder = os.path.join(root, install[1:])
+	cmds.append(f"--format={target}")
+	cmds.append(f"--directory={base}")
+	cmds.append(f"--prefix={prefix}")
+	cmds.append("--compression=xz")
+	builtin = os.path.join(grub_folder, "grub.builtin.cfg")
+	with open(builtin, "w") as f:
+		f.write(f"search --no-floppy --fs-uuid --set=root {uuid}\n")
+		f.write(f"set prefix=\"($root){prefix}\"\n")
+		f.write("normal\n")
+		f.write("echo \"Failed to switch into normal mode\"\n")
+		f.write("sleep 5\n")
+	cmds.append(f"--config={builtin}")
+	efi = os.path.join(efi_folder, "efi/boot")
+	os.makedirs(efi, mode=0o0755, exist_ok=True)
+	out = os.path.join(efi, efi_boot_name(target))
+	cmds.append(f"--output={out}")
+	if os.path.exists(out): os.remove(out)
+	cmds.extend(modules)
+	ret = ctx.run_external(cmds)
+	if ret != 0: raise OSError("grub-mkimage failed")
+	log.info(f"generated grub {target} efi image {out}")
+
+
+def proc_bootsec(ctx: ArchBuilderContext, target: str):
+	mods = []
+	cmds = ["grub-install"]
+	if target != "i386-pc":
+		raise RuntimeError("bootsec only for i386-pc")
+	mount = ctx.get_mount()
+	root = ctx.get_rootfs()
+	install: str = ctx.get("grub.path", "/boot/grub")
+	if install.startswith("/"): install = install[1:]
+	grub = os.path.join(root, "usr/lib/grub", target)
+	if install.endswith("/grub"): install = install[0:-5]
+	cmds.append(f"--target={target}")
+	cmds.append(f"--directory={grub}")
+	mods.append("part_msdos")
+	mods.append("part_gpt")
+	rootfs = ctx.fstab.find_target("/")
+	mnt_install = os.path.join(mount, install)
+	cmds.append(f"--boot-directory={mnt_install}")
+	if rootfs is None or len(rootfs) <= 0 or rootfs[0] is None:
+		raise RuntimeError("rootfs mount point not found")
+	rootfs = rootfs[0]
+	mods.append(fstype_to_mod(rootfs.fstype))
+	if len(mods) > 0:
+		cmds.append("--modules=" + (" ".join(mods)))
+	device = ctx.get("grub.device", None)
+	if device is None:
+		source = rootfs.source
+		if source in ctx.fsmap:
+			source = ctx.fsmap[source]
+		if not source.startswith("/dev/loop"):
+			raise RuntimeError("no device to detect grub install")
+		if loop_get_offset(source) <= 0:
+			raise RuntimeError("no loop part to detect grub install")
+		device = loop_get_backing(source)
+	if device is None:
+		raise RuntimeError("no device for grub install")
+	cmds.append(device)
+	ret = ctx.run_external(cmds)
+	if ret != 0: raise OSError("grub-install failed")
+	src = os.path.join(mnt_install, "grub")
+	dst = os.path.join(root, install, "grub")
+	shutil.copytree(src, dst, dirs_exist_ok=True)
+
+
+def proc_install(ctx: ArchBuilderContext):
+	targets: list[str] = ctx.get("grub.targets", [])
+	for target in targets:
+		if target == "i386-pc":
+			proc_bootsec(ctx, target)
+		elif target.endswith("-efi"):
+			proc_mkimage_efi(ctx, target)
+		else: raise ArchBuilderConfigError(
+			f"unsupported target {target}"
+		)
+
+
+def proc_grub(ctx: ArchBuilderContext):
+	root = ctx.get_rootfs()
+	install: str = ctx.get("grub.path", "/boot/grub")
+	if install.startswith("/"):
+		install = install[1:]
+	install = os.path.join(root, install)
+	os.makedirs(install, mode=0o0755, exist_ok=True)
+	proc_config(ctx, install)
+	proc_targets(ctx, install)
+	proc_install(ctx)

builder/build/locale.py

@@ -0,0 +1,64 @@
+import os
+from logging import getLogger
+from builder.build import filesystem
+from builder.lib.context import ArchBuilderContext
+from builder.lib.config import ArchBuilderConfigError
+from builder.lib.utils import open_config
+log = getLogger(__name__)
+
+
+def reset_locale(ctx: ArchBuilderContext):
+	root = ctx.get_rootfs()
+	archive = os.path.join(root, "usr/lib/locale/locale-archive")
+	if os.path.exists(archive): os.remove(archive)
+
+
+def enable_all(ctx: ArchBuilderContext):
+	root = ctx.get_rootfs()
+	locales = ctx.get("locale.enable", [])
+	log.info("setup enabled locale")
+	file = os.path.join(root, "etc/locale.gen")
+	with open_config(file) as f:
+		for line in locales:
+			log.debug(f"adding locale {line}")
+			f.write(line)
+			f.write("\n")
+		if len(locales) == 0:
+			f.write("# No any locales enabled\n")
+	filesystem.chroot_run(ctx, "locale-gen")
+
+
+def set_default(ctx: ArchBuilderContext):
+	root = ctx.get_rootfs()
+	default = ctx.get("locale.default", None)
+	if default is None: default = "C"
+	log.info(f"default locale: {default}")
+	conf = os.path.join(root, "etc/locale.conf")
+	with open_config(conf) as f:
+		f.write(f"LANG={default}\n")
+
+
+def set_timezone(ctx: ArchBuilderContext):
+	root = ctx.get_rootfs()
+	timezone = ctx.get("timezone", None)
+	if timezone is None: timezone = "UTC"
+	log.info(f"timezone: {timezone}")
+	dst = os.path.join("/usr/share/zoneinfo", timezone)
+	real = os.path.join(root, dst[1:])
+	if not os.path.exists(real): raise ArchBuilderConfigError(
+		f"timezone {timezone} not found"
+	)
+	lnk = os.path.join(root, "etc/localtime")
+	if os.path.exists(lnk): os.remove(lnk)
+	os.symlink(dst, lnk)
+	conf = os.path.join(root, "etc/timezone")
+	with open(conf, "w") as f:
+		f.write(timezone)
+		f.write(os.linesep)
+
+
+def proc_locale(ctx: ArchBuilderContext):
+	reset_locale(ctx)
+	enable_all(ctx)
+	set_default(ctx)
+	set_timezone(ctx)

builder/build/mkinitcpio.py

@@ -0,0 +1,73 @@
+import os
+from logging import getLogger
+from tempfile import NamedTemporaryFile
+from builder.build.filesystem import chroot_run
+from builder.lib.context import ArchBuilderContext
+from builder.lib.config import ArchBuilderConfigError
+from builder.lib.utils import open_config
+log = getLogger(__name__)
+
+
+def add_values(ctx: ArchBuilderContext, key: str, arr: list[str]):
+	vals = ctx.get(key, [])
+	vt = type(vals)
+	if vt is list: arr.extend(vals)
+	elif vt is str: arr.extend(vals.split())
+	else: raise ArchBuilderConfigError(f"bad values for {key}")
+
+
+def gen_config(ctx: ArchBuilderContext):
+	modules: list[str] = []
+	binaries: list[str] = []
+	files: list[str] = []
+	hooks: list[str] = []
+	hooks.append("base")
+	hooks.append("systemd")
+	hooks.append("autodetect")
+	if ctx.cur_arch in ["x86_64", "i386"]:
+		hooks.append("microcode")
+	hooks.append("modconf")
+	if ctx.get("mkinitcpio.hooks.keymap", False):
+		hooks.extend(["kms", "keyboard", "keymap", "consolefont"])
+	hooks.extend(["block", "filesystems", "fsck"])
+	add_values(ctx, "mkinitcpio.modules", modules)
+	add_values(ctx, "mkinitcpio.binaries", binaries)
+	add_values(ctx, "mkinitcpio.files", files)
+	root = ctx.get_rootfs()
+	cfg = os.path.join(root, "etc/mkinitcpio.conf")
+	with open_config(cfg) as f:
+		f.write("MODULES=(%s)\n" % (" ".join(modules)))
+		f.write("BINARIES=(%s)\n" % (" ".join(binaries)))
+		f.write("FILES=(%s)\n" % (" ".join(files)))
+		f.write("HOOKS=(%s)\n" % (" ".join(hooks)))
+
+
+def recreate_initrd(ctx: ArchBuilderContext, path: str):
+	chroot_run(ctx, ["mkinitcpio", "-p", path])
+
+
+def recreate_initrd_no_autodetect(ctx: ArchBuilderContext, path: str):
+	tmp = os.path.join(ctx.get_rootfs(), "tmp")
+	with NamedTemporaryFile("w", dir=tmp) as temp:
+		with open(path, "r") as f:
+			temp.write(f.read())
+		temp.write("\ndefault_options=\"-S autodetect\"\n")
+		temp.flush()
+		path = os.path.join("/tmp", os.path.basename(temp.name))
+		recreate_initrd(ctx, path)
+
+
+def recreate_initrds(ctx: ArchBuilderContext):
+	root = ctx.get_rootfs()
+	no_autodetect = ctx.get("mkinitcpio.no_autodetect", True)
+	folder = os.path.join(root, "etc/mkinitcpio.d")
+	for preset in os.listdir(folder):
+		if not preset.endswith(".preset"): continue
+		path = os.path.join(folder, preset)
+		if not no_autodetect: recreate_initrd(ctx, path)
+		else: recreate_initrd_no_autodetect(ctx, path)
+
+
+def proc_mkinitcpio(ctx: ArchBuilderContext):
+	gen_config(ctx)
+	recreate_initrds(ctx)

builder/build/mount.py

@@ -0,0 +1,103 @@
+import os
+from logging import getLogger
+from builder.lib.context import ArchBuilderContext
+from builder.lib.mount import MountTab, MountPoint
+log = getLogger(__name__)
+
+
+def init_rootfs(ctx: ArchBuilderContext):
+	"""
+	Initialize Arch Linux rootfs
+	"""
+	path = ctx.get_rootfs()
+	def mkdir(mode, *names):
+		real = os.path.join(path, *names)
+		if not os.path.exists(real):
+			log.debug(f"create folder {real} with {mode:04o}")
+			os.makedirs(real, mode=mode)
+	log.debug(f"initializing rootfs folders at {path}")
+	mkdir(0o0755, path)
+	mkdir(0o0755, "dev")
+	mkdir(0o0555, "proc")
+	mkdir(0o0755, "run")
+	mkdir(0o0555, "sys")
+	mkdir(0o0755, "var", "lib", "pacman")
+	mkdir(0o0755, "etc", "pacman.d")
+	log.info(f"initialized rootfs folders at {path}")
+
+
+def undo_mounts(ctx: ArchBuilderContext):
+	"""
+	Clean up mount points
+	"""
+	if len(ctx.mounted) <= 0: return
+	log.debug("undo mount points")
+	ctx.chroot = False
+	while len(ctx.mounted) > 0:
+		unmounted = 0
+		for mount in ctx.mounted.copy():
+			try:
+				mount.umount()
+				ctx.mounted.remove(mount)
+				unmounted += 1
+			except:
+				pass
+		if unmounted == 0:
+			raise RuntimeError("failed to umount all")
+	mnts = MountTab.parse_mounts()
+	if any(mnts.find_folder(ctx.work)):
+		raise RuntimeError("mount points not cleanup")
+
+
+def do_mount(
+	ctx: ArchBuilderContext,
+	source: str,
+	target: str,
+	fstype: str,
+	options: str
+):
+	"""
+	Add a mount point
+	"""
+	mnt = MountPoint()
+	mnt.source = source
+	mnt.target = target
+	mnt.fstype = fstype
+	mnt.options = options
+	mnt.mount()
+	ctx.mounted.insert(0, mnt)
+
+
+def init_mount(ctx: ArchBuilderContext):
+	"""
+	Setup mount points for rootfs
+	"""
+	root = ctx.get_rootfs()
+	def symlink(target, *names):
+		real = os.path.join(root, *names)
+		if not os.path.exists(real):
+			log.debug(f"create symlink {real} -> {target}")
+			os.symlink(target, real)
+	def root_mount(source, target, fstype, options):
+		real = os.path.realpath(os.path.join(root, target))
+		do_mount(ctx, source, real, fstype, options)
+	try:
+		mnts = MountTab.parse_mounts()
+		if any(mnts.find_folder(ctx.work)):
+			raise RuntimeError("mount points not cleanup")
+		root_mount("proc", "proc", "proc", "nosuid,noexec,nodev")
+		root_mount("sys", "sys", "sysfs", "nosuid,noexec,nodev,ro")
+		root_mount("dev", "dev", "devtmpfs", "mode=0755,nosuid")
+		root_mount("pts", "dev/pts", "devpts", "mode=0620,gid=5,nosuid,noexec")
+		root_mount("shm", "dev/shm", "tmpfs", "mode=1777,nosuid,nodev")
+		root_mount("run", "run", "tmpfs", "nosuid,nodev,mode=0755")
+		root_mount("tmp", "tmp", "tmpfs", "mode=1777,strictatime,nodev,nosuid")
+		symlink("/proc/self/fd", "dev", "fd")
+		symlink("/proc/self/fd/0", "dev", "stdin")
+		symlink("/proc/self/fd/1", "dev", "stdout")
+		symlink("/proc/self/fd/2", "dev", "stderr")
+		ctx.chroot = True
+	except:
+		log.error("failed to initialize mount points")
+		undo_mounts(ctx)
+		raise

builder/build/names.py

@@ -0,0 +1,68 @@
+import os
+from logging import getLogger
+from builder.lib.context import ArchBuilderContext
+from builder.lib.config import ArchBuilderConfigError
+from builder.lib.utils import open_config
+log = getLogger(__name__)
+
+
+def gen_machine_info(ctx: ArchBuilderContext):
+	root = ctx.get_rootfs()
+	file = os.path.join(root, "etc/machine-info")
+	cfg = ctx.get("sysconf")
+	fields = [
+		"chassis", "location", "icon_name",
+		"deployment", "pretty_hostname"
+	]
+	with open_config(file) as f:
+		for field in fields:
+			if field not in cfg: continue
+			f.write("%s=\"%s\"\n" % (field.upper(), cfg[field]))
+	log.info(f"generated machine-info {file}")
+
+
+def gen_hosts(ctx: ArchBuilderContext):
+	addrs: list[str] = []
+	root = ctx.get_rootfs()
+	file = os.path.join(root, "etc/hosts")
+	hosts: list[str] = ctx.get("sysconf.hosts", [])
+	with open_config(file) as f:
+		for addr in hosts:
+			s = addr.split()
+			if len(s) <= 1: raise ArchBuilderConfigError("bad host entry")
+			addrs.append(s[0])
+			f.write(addr)
+			f.write(os.linesep)
+		name = ctx.get("sysconf.hostname")
+		if "127.0.1.1" not in addrs and name:
+			f.write(f"127.0.1.1 {name}\n")
+	log.info(f"generated hosts {file}")
+
+
+def gen_hostname(ctx: ArchBuilderContext):
+	root = ctx.get_rootfs()
+	file = os.path.join(root, "etc/hostname")
+	name = ctx.get("sysconf.hostname")
+	if name is None: return
+	with open_config(file) as f:
+		f.write(name)
+		f.write(os.linesep)
+	log.info(f"generated hostname {file}")
+
+
+def gen_environments(ctx: ArchBuilderContext):
+	root = ctx.get_rootfs()
+	file = os.path.join(root, "etc/environment")
+	envs: dict[str] = ctx.get("sysconf.environments", [])
+	with open_config(file) as f:
+		for key in envs:
+			val = envs[key]
+			f.write(f"{key}=\"{val}\"\n")
+	log.info(f"generated environment {file}")
+
+
+def proc_names(ctx: ArchBuilderContext):
+	gen_machine_info(ctx)
+	gen_environments(ctx)
+	gen_hostname(ctx)
+	gen_hosts(ctx)

builder/build/pacman.py

@@ -0,0 +1,69 @@
+import os
+from logging import getLogger
+from builder.component.pacman import Pacman
+from builder.lib.context import ArchBuilderContext
+from builder.lib.utils import open_config
+log = getLogger(__name__)
+
+
+def install_all(ctx: ArchBuilderContext, pacman: Pacman):
+	packages = ctx.get("pacman.install", [])
+	if len(packages) <= 0: return
+	log.info("installing packages: %s", " ".join(packages))
+	pacman.install(packages)
+
+
+def install_all_keyring(ctx: ArchBuilderContext, pacman: Pacman):
+	packages: list[str] = ctx.get("pacman.install", [])
+	if len(packages) <= 0: return
+	keyrings = [pkg for pkg in packages if pkg.endswith("-keyring")]
+	if len(keyrings) <= 0: return
+	log.info("installing keyrings: %s", " ".join(keyrings))
+	pacman.add_trust_keyring_pkg(keyrings)
+
+
+def uninstall_all(ctx: ArchBuilderContext, pacman: Pacman):
+	packages = ctx.get("pacman.uninstall", [])
+	if len(packages) <= 0: return
+	log.info("uninstalling packages: %s", " ".join(packages))
+	pacman.uninstall(packages)
+
+
+def append_config(ctx: ArchBuilderContext, lines: list[str]):
+	lines.append("[options]\n")
+	lines.append("HoldPkg = pacman glibc filesystem\n")
+	lines.append(f"Architecture = {ctx.tgt_arch}\n")
+	lines.append("UseSyslog\n")
+	lines.append("Color\n")
+	lines.append("CheckSpace\n")
+	lines.append("VerbosePkgLists\n")
+	lines.append("ParallelDownloads = 5\n")
+	lines.append("SigLevel = Required DatabaseOptional\n")
+	lines.append("LocalFileSigLevel = Optional\n")
+
+
+def gen_config(ctx: ArchBuilderContext, pacman: Pacman):
+	conf = os.path.join(ctx.get_rootfs(), "etc/pacman.conf")
+	lines: list[str] = []
+	append_config(ctx, lines)
+	pacman.append_repos(lines)
+	with open_config(conf) as f:
+		f.writelines(lines)
+	log.info(f"generated pacman config {conf}")
+
+
+def proc_pacman(ctx: ArchBuilderContext, pacman: Pacman):
+	install_all(ctx, pacman)
+	uninstall_all(ctx, pacman)
+	gen_config(ctx, pacman)
+
+
+def proc_pacman_keyring(ctx: ArchBuilderContext, pacman: Pacman):
+	install_all_keyring(ctx, pacman)
+
+
+def trust_all(ctx: ArchBuilderContext, pacman: Pacman):
+	if not ctx.gpgcheck: return
+	trust = ctx.get("pacman.trust", [])
+	pacman.recv_keys(trust)
+	for key in trust: pacman.lsign_key(key)

builder/build/systemd.py

@@ -0,0 +1,22 @@
+import os
+from logging import getLogger
+from builder.lib.context import ArchBuilderContext
+from builder.component import systemd as systemd_comp
+log = getLogger(__name__)
+
+
+def proc_systemd(ctx: ArchBuilderContext):
+	systemd_comp.enable(ctx, ctx.get("systemd.enable", []))
+	systemd_comp.disable(ctx, ctx.get("systemd.disable", []))
+	systemd_comp.set_default(ctx, ctx.get("systemd.default", None))
+
+
+def proc_machine_id(ctx: ArchBuilderContext):
+	id = ctx.get("machine-id", "")
+	root = ctx.get_rootfs()
+	mid = os.path.join(root, "etc/machine-id")
+	with open(mid, "w") as f:
+		f.write(id)
+		f.write(os.linesep)
+	if len(id) == 0: log.info("removed machine-id")
+	else: log.info(f"set machine-id to {id}")

builder/build/user.py

@@ -0,0 +1,66 @@
+from logging import getLogger
+from builder.build.filesystem import chroot_run
+from builder.lib.config import ArchBuilderConfigError
+from builder.lib.context import ArchBuilderContext
+log = getLogger(__name__)
+
+
+def proc_user(ctx: ArchBuilderContext, cfg: dict):
+	if "name" not in cfg: raise ArchBuilderConfigError("username not set")
+	name = cfg["name"]
+	cmds = []
+	if ctx.passwd.lookup_name(name) is None:
+		cmds.append("useradd")
+		cmds.append("-m")
+		action = "created"
+	else:
+		cmds.append("usermod")
+		action = "modified"
+	if "uid" in cfg: cmds.extend(["-u", str(cfg["uid"])])
+	if "gid" in cfg: cmds.extend(["-g", str(cfg["gid"])])
+	if "home" in cfg: cmds.extend(["-d", cfg["home"]])
+	if "shell" in cfg: cmds.extend(["-s", cfg["shell"]])
+	if "groups" in cfg: cmds.extend(["-G", str(cfg["groups"])])
+	cmds.append(name)
+	ret = chroot_run(ctx, cmds)
+	if ret != 0: raise OSError(f"{cmds[0]} failed")
+	if "password" in cfg:
+		cmds = ["chpasswd"]
+		text = f"{name}:{cfg['password']}\n"
+		ret = chroot_run(ctx, cmds, stdin=text)
+		if ret != 0: raise OSError("chpasswd failed")
+	ctx.reload_passwd()
+	log.info(f"{action} user {name}")
+
+
+def proc_group(ctx: ArchBuilderContext, cfg: dict):
+	if "name" not in cfg: raise ArchBuilderConfigError("groupname not set")
+	name = cfg["name"]
+	cmds = []
+	if ctx.passwd.lookup_name(name) is None:
+		cmds.append("groupadd")
+		action = "created"
+	else:
+		cmds.append("groupmod")
+		action = "modified"
+	if "gid" in cfg: cmds.extend(["-g", str(cfg["gid"])])
+	cmds.append(name)
+	ret = chroot_run(ctx, cmds)
+	if ret != 0: raise OSError(f"{name} failed")
+	ctx.reload_passwd()
+	log.info(f"{action} group {name}")
+
+
+def proc_users(ctx: ArchBuilderContext):
+	for user in ctx.get("sysconf.user", []):
+		proc_user(ctx, user)
+
+
+def proc_groups(ctx: ArchBuilderContext):
+	for group in ctx.get("sysconf.group", []):
+		proc_group(ctx, group)
+
+
+def proc_usergroup(ctx: ArchBuilderContext):
+	proc_groups(ctx)
+	proc_users(ctx)

builder/component/pacman.py

@@ -0,0 +1,323 @@
+import os
+import pyalpm
+import logging
+import shutil
+import libarchive
+from logging import getLogger
+from builder.lib.context import ArchBuilderContext
+from builder.lib.config import ArchBuilderConfigError
+log = getLogger(__name__)
+
+
+def log_cb(level, line):
+	if level & pyalpm.LOG_ERROR:
+		ll = logging.ERROR
+	elif level & pyalpm.LOG_WARNING:
+		ll = logging.WARNING
+	else: return
+	log.log(ll, line.strip())
+
+
+def dl_cb(filename, ev, data):
+	match ev:
+		case 0: log.debug(f"pacman downloading {filename}")
+		case 2: log.warning(f"pacman retry download {filename}")
+		case 3: log.info(f"pacman downloaded {filename}")
+
+
+def progress_cb(target, percent, n, i):
+	if len(target) <= 0 or percent != 0: return
+	log.info(f"processing {target} ({i}/{n})")
+
+
+class Pacman:
+	handle: pyalpm.Handle
+	ctx: ArchBuilderContext
+	root: str
+	databases: dict[str: pyalpm.DB]
+	config: dict
+	caches: list[str]
+
+	def append_repos(self, lines: list[str]):
+		for repo in self.databases:
+			db = self.databases[repo]
+			lines.append(f"[{repo}]\n")
+			for server in db.servers:
+				log.debug(f"server {server}")
+				lines.append(f"Server = {server}\n")
+
+	def append_config(self, lines: list[str]):
+		siglevel = ("Required DatabaseOptional" if self.ctx.gpgcheck else "Never")
+		lines.append("[options]\n")
+		for cache in self.caches:
+			lines.append(f"CacheDir = {cache}\n")
+		lines.append(f"RootDir = {self.root}\n")
+		lines.append(f"GPGDir = {self.handle.gpgdir}\n")
+		lines.append(f"LogFile = {self.handle.logfile}\n")
+		lines.append("HoldPkg = pacman glibc\n")
+		lines.append(f"Architecture = {self.ctx.tgt_arch}\n")
+		lines.append("UseSyslog\n")
+		lines.append("Color\n")
+		lines.append("CheckSpace\n")
+		lines.append("VerbosePkgLists\n")
+		lines.append("ParallelDownloads = 5\n")
+		lines.append(f"SigLevel = {siglevel}\n")
+		lines.append("LocalFileSigLevel = Optional\n")
+		self.append_repos(lines)
+
+	def init_keyring(self):
+		path = os.path.join(self.ctx.work, "rootfs")
+		keyring = os.path.join(path, "etc/pacman.d/gnupg")
+		if not self.ctx.gpgcheck: return
+		if os.path.exists(os.path.join(keyring, "trustdb.gpg")):
+			log.debug("skip initialize pacman keyring when exists")
+			return
+		log.info("initializing pacman keyring")
+		self.pacman_key(["--init"])
+
+	def init_config(self):
+		config = os.path.join(self.ctx.work, "pacman.conf")
+		if os.path.exists(config):
+			os.remove(config)
+		log.info(f"generate pacman config {config}")
+		lines = []
+		self.append_config(lines)
+		log.debug("config content: %s", "\t".join(lines).strip())
+		log.debug(f"writing {config}")
+		with open(config, "w") as f:
+			f.writelines(lines)
+
+	def pacman_key(self, args: list[str]):
+		if not self.ctx.gpgcheck:
+			raise RuntimeError("GPG check disabled")
+		keyring = os.path.join(self.root, "etc/pacman.d/gnupg")
+		config = os.path.join(self.ctx.work, "pacman.conf")
+		cmds = ["pacman-key"]
+		cmds.append(f"--gpgdir={keyring}")
+		cmds.append(f"--config={config}")
+		cmds.extend(args)
+		ret = self.ctx.run_external(cmds)
+		if ret != 0: raise OSError(f"pacman-key failed with {ret}")
+
+	def pacman(self, args: list[str]):
+		config = os.path.join(self.ctx.work, "pacman.conf")
+		cmds = ["pacman"]
+		cmds.append("--noconfirm")
+		cmds.append(f"--root={self.root}")
+		cmds.append(f"--config={config}")
+		cmds.extend(args)
+		ret = self.ctx.run_external(cmds)
+		if ret != 0: raise OSError(f"pacman failed with {ret}")
+
+	def add_database(self, repo: dict):
+		def resolve(url: str) -> str:
+			return (url
+				.replace("$arch", self.ctx.tgt_arch)
+				.replace("$repo", name))
+		if "name" not in repo:
+			raise ArchBuilderConfigError("repo name not set")
+		name = repo["name"]
+		if name == "local" or "/" in name:
+			raise ArchBuilderConfigError("bad repo name")
+		if name not in self.databases:
+			self.databases[name] = self.handle.register_syncdb(
+				name, pyalpm.SIG_DATABASE_MARGINAL_OK
+			)
+		db = self.databases[name]
+		servers: list[str] = []
+		if "server" in repo:
+			servers.append(resolve(repo["server"]))
+		if "servers" in repo:
+			for server in repo["servers"]:
+				servers.append(resolve(server))
+		db.servers = servers
+		log.info(f"updating database {name}")
+		db.update(False)
+
+	def load_databases(self):
+		cfg = self.config
+		if "repo" not in cfg:
+			raise ArchBuilderConfigError("no repos found in config")
+		for repo in cfg["repo"]:
+			self.add_database(repo)
+		self.init_config()
+		self.refresh()
+
+	def lookup_package(self, name: str) -> list[pyalpm.Package]:
+		if ".pkg.tar." in name:
+			pkg = self.handle.load_pkg(name)
+			if pkg is None: raise RuntimeError(f"load package {name} failed")
+			return [pkg]
+		s = name.split("/")
+		if len(s) == 2:
+			if s[0] not in self.databases:
+				raise ValueError(f"database {s[0]} not found")
+			db = (self.handle.get_localdb() if s[0] == "local" else self.databases[s[0]])
+			pkg = db.get_pkg(s[1])
+			if pkg: return [pkg]
+			raise ValueError(f"package {s[1]} not found")
+		elif len(s) == 1:
+			pkg = pyalpm.find_grp_pkgs(self.databases.values(), name)
+			if len(pkg) > 0: return pkg
+			for dbn in self.databases:
+				db = self.databases[dbn]
+				pkg = db.get_pkg(name)
+				if pkg: return [pkg]
+			raise ValueError(f"package {name} not found")
+		raise ValueError(f"bad package name {name}")
+
+	def init_cache(self):
+		host_cache = "/var/cache/pacman/pkg"
+		work_cache = os.path.join(self.ctx.work, "packages")
+		root_cache = os.path.join(self.root, "var/cache/pacman/pkg")
+		self.caches.clear()
+		if os.path.exists(host_cache):
+			self.caches.append(host_cache)
+		self.caches.append(work_cache)
+		self.caches.append(root_cache)
+		os.makedirs(work_cache, mode=0o0755, exist_ok=True)
+		os.makedirs(root_cache, mode=0o0755, exist_ok=True)
+
+	def __init__(self, ctx: ArchBuilderContext):
+		self.ctx = ctx
+		if "pacman" not in ctx.config:
+			raise ArchBuilderConfigError("no pacman found in config")
+		self.config = ctx.config["pacman"]
+		self.root = ctx.get_rootfs()
+		db = os.path.join(self.root, "var/lib/pacman")
+		self.handle = pyalpm.Handle(self.root, db)
+		self.handle.arch = ctx.tgt_arch
+		self.handle.logfile = os.path.join(self.ctx.work, "pacman.log")
+		self.handle.gpgdir = os.path.join(self.root, "etc/pacman.d/gnupg")
+		self.handle.logcb = log_cb
+		self.handle.dlcb = dl_cb
+		self.handle.progresscb = progress_cb
+		self.databases = {}
+		self.caches = []
+		self.init_cache()
+		for cache in self.caches:
+			self.handle.add_cachedir(cache)
+		self.init_config()
+
+	def uninstall(self, pkgs: list[str]):
+		if len(pkgs) == 0: return
+		ps = " ".join(pkgs)
+		log.info(f"removing packages {ps}")
+		args = ["--needed", "--remove"]
+		args.extend(pkgs)
+		self.pacman(args)
+
+	def install(
+		self,
+		pkgs: list[str],
+		/,
+		force: bool = False,
+		asdeps: bool = False,
+		nodeps: bool = False,
+	):
+		if len(pkgs) == 0: return
+		core_db = "var/lib/pacman/sync/core.db"
+		if not os.path.exists(os.path.join(self.root, core_db)):
+			self.refresh()
+		ps = " ".join(pkgs)
+		log.info(f"installing packages {ps}")
+		args = ["--sync"]
+		if not force: args.append("--needed")
+		if asdeps: args.append("--asdeps")
+		if nodeps: args.extend(["--nodeps", "--nodeps"])
+		args.extend(pkgs)
+		self.pacman(args)
+
+	def download(self, pkgs: list[str]):
+		if len(pkgs) == 0: return
+		core_db = "var/lib/pacman/sync/core.db"
+		if not os.path.exists(os.path.join(self.root, core_db)):
+			self.refresh()
+		log.info("downloading packages %s", " ".join(pkgs))
+		args = ["--sync", "--downloadonly", "--nodeps", "--nodeps"]
+		args.extend(pkgs)
+		self.pacman(args)
+
+	def install_local(self, files: list[str]):
+		if len(files) == 0: return
+		log.info("installing local packages %s", " ".join(files))
+		args = ["--needed", "--upgrade"]
+		args.extend(files)
+		self.pacman(args)
+
+	def refresh(self, /, force: bool = False):
+		log.info("refresh pacman database")
+		args = ["--sync", "--refresh"]
+		if force: args.append("--refresh")
+		self.pacman(args)
+
+	def recv_keys(self, keys: str | list[str]):
+		args = ["--recv-keys"]
+		if type(keys) is str:
+			args.append(keys)
+		elif type(keys) is list:
+			if len(keys) <= 0: return
+			args.extend(keys)
+		else: raise TypeError("bad keys type")
+		self.pacman_key(args)
+
+	def lsign_key(self, key: str):
+		self.pacman_key(["--lsign-key", key])
+
+	def pouplate_keys(
+		self,
+		names: str | list[str] = None,
+		folder: str = None
+	):
+		args = ["--populate"]
+		if folder: args.extend(["--populate-from", folder])
+		if names is None: pass
+		elif type(names) is str: args.append(names)
+		elif type(names) is list: args.extend(names)
+		else: raise TypeError("bad names type")
+		self.pacman_key(args)
+
+	def find_package_file(self, pkg: pyalpm.Package) -> str | None:
+		for cache in self.caches:
+			p = os.path.join(cache, pkg.filename)
+			if os.path.exists(p): return p
+		return None
+
+	def trust_keyring_pkg(self, pkg: pyalpm.Package):
+		if not self.ctx.gpgcheck: return
+		names: list[str] = []
+		target = os.path.join(self.ctx.work, "keyrings")
+		keyring = "usr/share/pacman/keyrings/"
+		path = self.find_package_file(pkg)
+		if os.path.exists(target):
+			shutil.rmtree(target)
+		os.makedirs(target, mode=0o0755)
+		if path is None: raise RuntimeError(
+			f"package {pkg.name} not found"
+		)
+		log.debug(f"processing keyring package {pkg.name}")
+		with libarchive.file_reader(path) as archive:
+			for file in archive:
+				pn: str = file.pathname
+				if not pn.startswith(keyring): continue
+				fn = pn[len(keyring):]
+				if len(fn) <= 0: continue
+				if fn.endswith(".gpg"): names.append(fn[:-4])
+				dest = os.path.join(target, fn)
+				log.debug(f"extracting {pn} to {dest}")
+				with open(dest, "wb") as f:
+					for block in file.get_blocks(file.size):
+						f.write(block)
+					fd = f.fileno()
+					os.fchmod(fd, file.mode)
+					os.fchown(fd, file.uid, file.gid)
+		self.pouplate_keys(names, target)
+
+	def add_trust_keyring_pkg(self, pkgnames: list[str]):
+		if not self.ctx.gpgcheck: return
+		if len(pkgnames) <= 0: return
+		self.download(pkgnames)
+		for pkgname in pkgnames:
+			pkgs = self.lookup_package(pkgname)
+			for pkg in pkgs:
+				self.trust_keyring_pkg(pkg)

builder/component/systemd.py

@@ -0,0 +1,38 @@
+from builder.lib import utils
+from builder.build import filesystem
+from builder.lib.context import ArchBuilderContext
+
+
+def systemctl(ctx: ArchBuilderContext, args: list[str]):
+	path = ctx.get_rootfs()
+	full_args = ["systemctl"]
+	if utils.have_external("systemctl"):
+		full_args.append(f"--root={path}")
+		full_args.extend(args)
+		ret = ctx.run_external(full_args)
+	else:
+		full_args.extend(args)
+		ret = filesystem.chroot_run(ctx, full_args)
+	if ret != 0: raise OSError(
+		"systemctl %s failed: %d",
+		" ".join(args), ret
+	)
+
+
+def enable(ctx: ArchBuilderContext, units: list[str]):
+	if len(units) <= 0: return
+	args = ["enable", "--"]
+	args.extend(units)
+	systemctl(ctx, args)
+
+
+def disable(ctx: ArchBuilderContext, units: list[str]):
+	if len(units) <= 0: return
+	args = ["disable", "--"]
+	args.extend(units)
+	systemctl(ctx, args)
+
+
+def set_default(ctx: ArchBuilderContext, unit: str):
+	if not unit: return
+	systemctl(ctx, ["set-default", "--", unit])

builder/component/user.py

@@ -0,0 +1,74 @@
+from logging import getLogger
+from builder.lib.config import ArchBuilderConfigError
+from builder.lib.context import ArchBuilderContext
+log = getLogger(__name__)
+
+
+def parse_usergroup_item(
+	ctx: ArchBuilderContext,
+	item: str | int,
+	group: bool = False
+) -> int:
+	if type(item) is int:
+		return int(item)
+	elif type(item) is str:
+		if group:
+			user = ctx.passwd.lookup_name(item)
+			if user is None: raise ArchBuilderConfigError(
+				f"user {item} not found"
+			)
+			return user.gid
+		else:
+			grp = ctx.group.lookup_name(item)
+			if grp is None: raise ArchBuilderConfigError(
+				f"group {item} not found"
+			)
+			return grp.gid
+	else: raise ArchBuilderConfigError("bad owner type")
+
+
+def parse_owner(ctx: ArchBuilderContext, owner: str) -> tuple[int, int]:
+	if ":" in owner:
+		i = owner.find(":")
+		uid = parse_usergroup_item(ctx, owner[0:i], False)
+		gid = parse_usergroup_item(ctx, owner[i+1:], True)
+	else:
+		uid = parse_usergroup_item(ctx, owner, False)
+		user = ctx.passwd.lookup_uid(uid)
+		if user is None: raise ArchBuilderConfigError(
+			f"user {user} not found"
+		)
+		gid = user.gid
+	return uid, gid
+
+
+def parse_usergroup_from(
+	ctx: ArchBuilderContext,
+	node: dict,
+	group: bool = False,
+	default: int = 0
+) -> int:
+	kid = "uid" if not group else "gid"
+	kname = "owner" if not group else "group"
+	if kid in node: return int(node[kid])
+	if kname in node: return parse_usergroup_item(
+		ctx, node[kname], group
+	)
+	return default
+
+
+def parse_user_from(
+	ctx: ArchBuilderContext,
+	node: dict,
+	default: tuple[int, int] = (0, -1)
+) -> tuple[int, int]:
+	if "owner" in node: return parse_owner(ctx, node["owner"])
+	uid = parse_usergroup_from(ctx, node, False, default[0])
+	gid = parse_usergroup_from(ctx, node, True, default[1])
+	if gid == -1:
+		user = ctx.passwd.lookup_uid(uid)
+		if user is None: raise ArchBuilderConfigError(
+			f"user {user} not found"
+		)
+		gid = user.gid
+	return uid, gid

builder/disk/content.py

@@ -0,0 +1,27 @@
+from builder.disk.image import ImageBuilder
+
+
+class ImageContentBuilder:
+	builder: ImageBuilder
+	properties: dict
+
+	def __init__(self, builder: ImageBuilder):
+		self.builder = builder
+		self.properties = {}
+
+	def build(self): pass
+
+
+class ImageContentBuilders:
+	types: list[tuple[str, type[ImageContentBuilder]]] = []
+
+	@staticmethod
+	def init():
+		if len(ImageContentBuilders.types) > 0: return
+		from builder.disk.types import types
+		ImageContentBuilders.types.extend(types)
+
+	@staticmethod
+	def find_builder(name: str) -> type[ImageContentBuilder]:
+		types = ImageContentBuilders.types
+		return next((t[1] for t in types if name == t[0]), None)

builder/disk/filesystem/btrfs.py

@@ -0,0 +1,11 @@
+from builder.disk.filesystem.creator import FileSystemCreator
+
+
+class BtrfsCreator(FileSystemCreator):
+	def create(self):
+		cmds: list[str] = ["mkfs.btrfs"]
+		if "fsname" in self.config: cmds.extend(["-L", self.config["fsname"]])
+		if "fsuuid" in self.config: cmds.extend(["-U", self.config["fsuuid"]])
+		cmds.append(self.device)
+		ret = self.ctx.run_external(cmds)
+		if ret != 0: raise OSError("mkfs.btrfs failed")

builder/disk/filesystem/build.py

@@ -0,0 +1,130 @@
+import os
+from logging import getLogger
+from builder.lib.blkid import Blkid
+from builder.disk.layout.gpt.types import DiskTypesGPT
+from builder.disk.content import ImageContentBuilder
+from builder.lib.config import ArchBuilderConfigError
+from builder.lib.mount import MountPoint
+from builder.lib.utils import path_to_name
+log = getLogger(__name__)
+
+
+class FileSystemBuilder(ImageContentBuilder):
+	blkid: Blkid = Blkid()
+	fstype_map: dict = {
+		"fat12": "vfat",
+		"fat16": "vfat",
+		"fat32": "vfat",
+	}
+
+	def proc_cmdline_root(self, cfg: dict, mnt: MountPoint):
+		ccfg = self.builder.ctx.config_orig
+		if "kernel" not in ccfg: ccfg["kernel"] = {}
+		kern = ccfg["kernel"]
+		if "cmdline" not in kern: kern["cmdline"] = []
+		cmds: list[str] = kern["cmdline"]
+		if any(cmdline.startswith("root=") for cmdline in cmds):
+			raise ArchBuilderConfigError("root already set in cmdline")
+		if mnt.target != "/":
+			log.warning(f"root target is not / ({mnt.target})")
+		ecmds = [
+			"ro", "rootwait",
+			f"root={mnt.source}",
+			f"rootfstype={mnt.fstype}",
+			f"rootflags={mnt.options}",
+		]
+		scmds = " ".join(ecmds)
+		log.debug(f"add root cmdline {scmds}")
+		cmds.extend(ecmds)
+		self.builder.ctx.resolve_subscript()
+
+	def resolve_dev_tag(self, dev: str, mnt: MountPoint):
+		dev = dev.upper()
+		match dev:
+			case "UUID" | "LABEL":
+				log.warning(f"'{dev}=' maybe unsupported by kernel")
+				if dev in self.properties: val = self.properties[dev]
+				else: val = self.blkid.get_tag_value(None, dev, self.builder.device)
+			case "PARTUUID" | "PARTLABEL":
+				val = self.properties[dev] if dev in self.properties else None
+			case _: raise ArchBuilderConfigError(f"unsupported device type {dev}")
+		if not val: raise ArchBuilderConfigError(f"property {dev} not found")
+		mnt.source = f"{dev}={val}"
+
+	def proc_grow(self, cfg: dict, mnt: MountPoint):
+		root = self.builder.ctx.get_rootfs()
+		if "ptype" not in cfg: raise ArchBuilderConfigError("no ptype set for grow")
+		ptype = DiskTypesGPT.lookup_one_uuid(cfg["ptype"])
+		if ptype is None: raise ArchBuilderConfigError(f"unknown type {cfg['ptype']}")
+		mnt.option.append("x-systemd.growfs")
+		conf = "grow-%s.conf" % path_to_name(mnt.target)
+		repart = os.path.join(root, "etc/repart.d", conf)
+		os.makedirs(os.path.dirname(repart), mode=0o0755, exist_ok=True)
+		fsname, fsuuid = None, None
+		dev = self.builder.device
+		if "fsname" in cfg: fsname = cfg["fsname"]
+		if "fsuuid" in cfg: fsuuid = cfg["fsuuid"]
+		if fsname is None: fsname = self.blkid.get_tag_value(None, "LABEL", dev)
+		if fsuuid is None: fsuuid = self.blkid.get_tag_value(None, "UUID", dev)
+		with open(repart, "w") as f:
+			f.write("[Partition]\n")
+			f.write(f"Type={ptype}\n")
+			f.write(f"Format={mnt.fstype}\n")
+			if fsname: f.write(f"Label={fsname}\n")
+			if fsuuid: f.write(f"UUID={fsuuid}\n")
+		log.info(f"generated repart config {repart}")
+
+	def proc_fstab(self, cfg: dict):
+		mnt = MountPoint()
+		ccfg = self.builder.ctx.config
+		fstab = cfg["fstab"] if "fstab" in cfg else {}
+		rfstab = ccfg["fstab"] if "fstab" in ccfg else {}
+		mnt.target = cfg["mount"]
+		mnt.fstype = cfg["fstype"]
+		dev = None
+		if "dev" in fstab: dev = fstab["dev"]
+		if "dev" in rfstab: dev = rfstab["dev"]
+		if dev: self.resolve_dev_tag(dev, mnt)
+		if mnt.target == "/": mnt.fs_passno = 1
+		elif not mnt.virtual: mnt.fs_passno = 2
+		if "target" in fstab: mnt.target = fstab["target"]
+		if "source" in fstab: mnt.source = fstab["source"]
+		if "type" in fstab: mnt.fstype = fstab["type"]
+		if "dump" in fstab: mnt.fs_freq = fstab["dump"]
+		if "passno" in fstab: mnt.fs_passno = fstab["passno"]
+		if "flags" in fstab:
+			flags = fstab["flags"]
+			if type(flags) is str: mnt.options = flags
+			elif type(flags) is list: mnt.option = flags
+			else: raise ArchBuilderConfigError("bad flags")
+		if mnt.source is None or mnt.target is None:
+			raise ArchBuilderConfigError("incomplete fstab")
+		if len(self.builder.ctx.fstab.find_target(mnt.target)) > 0:
+			raise ArchBuilderConfigError(f"duplicate fstab target {mnt.target}")
+		if mnt.fstype in self.fstype_map:
+			mnt.fstype = self.fstype_map[mnt.fstype]
+		if "grow" in cfg and cfg["grow"]:
+			self.proc_grow(cfg, mnt)
+		mnt.fixup()
+		log.debug(f"add fstab entry {mnt}")
+		self.builder.ctx.fstab.append(mnt)
+		self.builder.ctx.fsmap[mnt.source] = self.builder.device
+		if "boot" in fstab and fstab["boot"]:
+			self.proc_cmdline_root(cfg, mnt)
+
+	def format(self, fstype: str):
+		from builder.disk.filesystem.creator import FileSystemCreators
+		FileSystemCreators.init()
+		t = FileSystemCreators.find_builder(fstype)
+		if t is None: raise ArchBuilderConfigError(f"unsupported fs type {fstype}")
+		creator = t(fstype, self, self.builder.config)
+		creator.create()
+
+	def build(self):
+		cfg = self.builder.config
+		if "fstype" not in cfg:
+			raise ArchBuilderConfigError("fstype not set")
+		fstype = cfg["fstype"]
+		self.format(fstype)
+		if "mount" in cfg:
+			self.proc_fstab(cfg)

builder/disk/filesystem/creator.py

@@ -0,0 +1,43 @@
+from builder.lib.context import ArchBuilderContext
+from builder.disk.filesystem.build import FileSystemBuilder
+
+
+class FileSystemCreator:
+	builder: FileSystemBuilder
+	config: dict
+	fstype: str
+	device: str
+	ctx: ArchBuilderContext
+
+	def __init__(
+		self,
+		fstype: str,
+		builder: FileSystemBuilder,
+		config: dict
+	):
+		self.builder = builder
+		self.config = config
+		self.fstype = fstype
+		self.device = builder.builder.device
+		self.ctx = builder.builder.ctx
+
+	def create(self): pass
+
+
+class FileSystemCreators:
+	types: list[tuple[str, type[FileSystemCreator]]] = [
+	]
+
+	@staticmethod
+	def init():
+		if len(FileSystemCreators.types) > 0: return
+		from builder.disk.filesystem.types import types
+		FileSystemCreators.types.extend(types)
+
+	@staticmethod
+	def find_builder(name: str) -> type[FileSystemCreator]:
+		return next((
+			t[1]
+			for t in FileSystemCreators.types
+			if name == t[0]
+		), None)

builder/disk/filesystem/ext4.py

@@ -0,0 +1,17 @@
+import os
+from builder.disk.filesystem.creator import FileSystemCreator
+
+
+class EXT4Creator(FileSystemCreator):
+	def create(self):
+		cmds: list[str] = ["mke2fs"]
+		if self.fstype not in ["ext2", "ext3", "ext4"]:
+			raise RuntimeError(f"unsupported fs {self.fstype}")
+		cmds.extend(["-t", self.fstype])
+		if "fsname" in self.config: cmds.extend(["-L", self.config["fsname"]])
+		if "fsuuid" in self.config: cmds.extend(["-U", self.config["fsuuid"]])
+		env = os.environ.copy()
+		env["MKE2FS_DEVICE_SECTSIZE"] = str(self.builder.builder.sector)
+		cmds.append(self.device)
+		ret = self.ctx.run_external(cmds, env=env)
+		if ret != 0: raise OSError("mke2fs failed")

builder/disk/filesystem/types.py

@@ -0,0 +1,17 @@
+from builder.disk.filesystem.creator import FileSystemCreator
+from builder.disk.filesystem.btrfs import BtrfsCreator
+from builder.disk.filesystem.ext4 import EXT4Creator
+from builder.disk.filesystem.vfat import FatCreator
+
+
+types: list[tuple[str, type[FileSystemCreator]]] = [
+	("ext2",       EXT4Creator),
+	("ext3",       EXT4Creator),
+	("ext4",       EXT4Creator),
+	("vfat",       FatCreator),
+	("fat12",      FatCreator),
+	("fat16",      FatCreator),
+	("fat32",      FatCreator),
+	("msdos",      FatCreator),
+	("btrfs",      BtrfsCreator),
+]

builder/disk/filesystem/vfat.py

@@ -0,0 +1,22 @@
+from builder.disk.filesystem.creator import FileSystemCreator
+from builder.lib.config import ArchBuilderConfigError
+
+
+class FatCreator(FileSystemCreator):
+	def create(self):
+		cmds: list[str] = ["mkfs.fat"]
+		bits: int = 0
+		match self.fstype:
+			case "vfat": bits = 32
+			case "fat12": bits = 12
+			case "fat16": bits = 16
+			case "fat32": bits = 32
+			case "msdos": bits = 16
+			case _: raise ArchBuilderConfigError("unknown fat type")
+		cmds.append(f"-F{bits}")
+		if "fsname" in self.config: cmds.extend(["-n", self.config["fsname"]])
+		if "fsvolid" in self.config: cmds.extend(["-i", self.config["fsvolid"]])
+		cmds.extend(["-S", str(self.builder.builder.sector)])
+		cmds.append(self.device)
+		ret = self.ctx.run_external(cmds)
+		if ret != 0: raise OSError("mkfs.fat failed")

builder/disk/image.py

@@ -0,0 +1,123 @@
+import os
+import stat
+from typing import Self
+from logging import getLogger
+from builder.lib.loop import loop_setup
+from builder.lib.utils import size_to_bytes
+from builder.lib.config import ArchBuilderConfigError
+from builder.lib.context import ArchBuilderContext
+log = getLogger(__name__)
+
+
+class ImageBuilder:
+	offset: int = 0
+	size: int = 0
+	sector: int = 512
+	type: str = None
+	output: str = None
+	device: str = None
+	loop: bool = False
+	config: dict = {}
+	parent: Self = None
+	ctx: ArchBuilderContext = None
+	properties: dict = {}
+
+	def create_image(self):
+		if self.device: raise ValueError("device is set")
+		if self.output is None: raise ArchBuilderConfigError(
+			"no output set for image"
+		)
+		fd, recreate = -1, False
+		if os.path.exists(self.output):
+			st = os.stat(self.output)
+			if stat.S_ISBLK(st.st_mode):
+				log.debug(f"target {self.output} is a block device")
+				if self.size != 0: raise ArchBuilderConfigError(
+					"cannot use size field when output is a device"
+				)
+			elif stat.S_ISREG(st.st_mode):
+				log.debug(f"target {self.output} exists, removing")
+				recreate = True
+				os.remove(self.output)
+			else: raise ArchBuilderConfigError("target is not a file")
+		else: recreate = True
+		if recreate:
+			try:
+				if self.size == 0: raise ArchBuilderConfigError("size is not set")
+				log.info(f"creating {self.output} with {self.size} bytes")
+				flags = os.O_RDWR | os.O_CREAT | os.O_TRUNC
+				fd = os.open(self.output, flags=flags, mode=0o0644)
+				os.posix_fallocate(fd, 0, self.size)
+			finally:
+				if fd >= 0: os.close(fd)
+
+	def setup_loop(self):
+		target = self.output if self.parent is None else self.parent.device
+		if target is None: raise ArchBuilderConfigError("no target for image")
+		log.debug(f"try to create loop device from {target}")
+		log.debug(f"loop offset: {self.offset}, size: {self.size}, sector {self.sector}")
+		dev = loop_setup(
+			path=target,
+			size=self.size,
+			offset=self.offset,
+			block_size=self.sector,
+		)
+		log.info(f"created loop device {dev} from {target}")
+		self.ctx.loops.append(dev)
+		self.loop = True
+		self.device = dev
+
+	def __init__(
+		self,
+		ctx: ArchBuilderContext,
+		config: dict,
+		parent: Self = None
+	):
+		self.ctx = ctx
+		self.config = config
+		self.parent = parent
+		self.offset = 0
+		self.size = 0
+		self.sector = 512
+		self.loop = False
+		self.properties = {}
+		if "output" in config: self.output = config["output"]
+		if parent is None:
+			if self.output is None:
+				raise ArchBuilderConfigError("no output set for image")
+			if not self.output.startswith("/"):
+				self.output = os.path.join(ctx.get_output(), self.output)
+		else:
+			if parent.device is None: raise ArchBuilderConfigError(
+				"no device set for parent image"
+			)
+			self.sector = parent.sector
+		if "sector" in config: self.sector = size_to_bytes(config["sector"])
+		if "size" in config: self.size = size_to_bytes(config["size"])
+		if "type" in config: self.type = config["type"]
+		if self.type is None: raise ArchBuilderConfigError("no type set in image")
+
+	def build(self):
+		if self.device is None:
+			if self.output:
+				self.create_image()
+			self.setup_loop()
+		from builder.disk.content import ImageContentBuilders
+		ImageContentBuilders.init()
+		t = ImageContentBuilders.find_builder(self.type)
+		if t is None: raise ArchBuilderConfigError(
+			f"unsupported builder type {self.type}"
+		)
+		builder = t(self)
+		builder.properties.update(self.properties)
+		builder.build()
+
+
+def proc_image(ctx: ArchBuilderContext):
+	if "image" not in ctx.config: return
+	builders: list[ImageBuilder] = []
+	for image in ctx.config["image"]:
+		builder = ImageBuilder(ctx, image)
+		builders.append(builder)
+	for builder in builders:
+		builder.build()

builder/disk/layout/area.py

@@ -0,0 +1,27 @@
+from builder.lib.area import Area, Areas
+
+
+class DiskArea:
+	def find_free_area(
+		self,
+		start: int = -1,
+		end: int = -1,
+		size: int = -1,
+		area: Area = None,
+		biggest: bool = True,
+	) -> Area:
+		return self.get_free_areas().find(
+			start, end, size, area, biggest
+		)
+
+	def get_free_size(self) -> int:
+		return sum(area.size for area in self.get_free_areas())
+
+	def get_usable_area(self) -> Area:
+		pass
+
+	def get_used_areas(self, table=False) -> Areas:
+		pass
+
+	def get_free_areas(self) -> Areas:
+		pass

builder/disk/layout/build.py

@@ -0,0 +1,38 @@
+from builder.disk.content import ImageContentBuilder
+from builder.disk.layout.disk import Disk
+from builder.disk.image import ImageBuilder
+from builder.lib.config import ArchBuilderConfigError
+from builder.lib.context import ArchBuilderContext
+
+
+class DiskLayoutBuilder(ImageContentBuilder):
+	ctx: ArchBuilderContext
+
+	def build(self):
+		self.ctx = self.builder.ctx
+		cfg = self.builder.config
+		if "layout" not in cfg:
+			raise ArchBuilderConfigError("layout not set")
+		if "partitions" not in cfg:
+			raise ArchBuilderConfigError("partitions not set")
+		layout = Disk.find_layout(cfg["layout"])
+		if layout is None:
+			raise ArchBuilderConfigError(f"layout {layout} not found")
+		disk = layout(
+			path=self.builder.device,
+			sector=self.builder.sector
+		)
+		disk.create()
+		disk.set_from(cfg)
+		builders: list[ImageBuilder] = []
+		for part in cfg["partitions"]:
+			p = disk.add_partition_from(part)
+			if "type" in part:
+				b = ImageBuilder(self.ctx, part, self.builder)
+				if p.partlabel: b.properties["PARTLABEL"] = p.partlabel
+				if p.partuuid: b.properties["PARTUUID"] = p.partuuid
+				b.sector, b.offset, b.size = disk.sector, p.start, p.size
+				builders.append(b)
+		disk.save()
+		for builder in builders:
+			builder.build()

builder/disk/layout/dio.py

@@ -0,0 +1,133 @@
+import os
+import io
+import stat
+import fcntl
+import ctypes
+from logging import getLogger
+from builder.disk.layout import ioctl
+from builder.lib.utils import bytes_pad
+log = getLogger(__name__)
+
+
+class DiskIO:
+	_min_sector: int
+	_fp: io.RawIOBase
+	_opened: bool
+	_sector: int
+	_cached: dict
+	align: int
+
+	def load_block_info(self):
+		if self._fp is None: return
+		fd = self._fp.fileno()
+		st = os.fstat(fd)
+		if not stat.S_ISBLK(st.st_mode): return
+		try:
+			val = ctypes.c_uint()
+			fcntl.ioctl(fd, ioctl.BLKSSZGET, val)
+			log.debug(f"Block sector size: {val.value}")
+			self._sector = val.value
+		except: pass
+		try:
+			val = ctypes.c_uint64()
+			fcntl.ioctl(fd, ioctl.BLKGETSIZE64, val)
+			log.debug(f"Block total size: {val.value}")
+			self._cached["total_size"] = val.value
+			self._cached["total_lba"] = val.value // self._sector
+		except: pass
+		try:
+			val = ioctl.HDGeometry()
+			fcntl.ioctl(fd, ioctl.HDIO_GETGEO, val)
+			log.debug(f"Block heads: {val.heads.value}")
+			log.debug(f"Block sectors: {val.sectors.value}")
+			log.debug(f"Block cylinders: {val.cylinders.value}")
+			log.debug(f"Block start: {val.start.value}")
+			self._cached["heads"] = val.heads.value
+			self._cached["sectors"] = val.sectors.value
+			self._cached["cylinders"] = val.cylinders.value
+			self._cached["start"] = val.start.value
+		except: pass
+
+	@property
+	def sector(self) -> int:
+		return self._sector
+
+	@property
+	def align_lba(self) -> int:
+		return self.align // self.sector
+
+	@align_lba.setter
+	def align_lba(self, v: int):
+		self.align = v * self.sector
+
+	@property
+	def total_size(self) -> int:
+		if "total_size" in self._cached:
+			return self._cached["total_size"]
+		off = self._fp.tell()
+		try:
+			self._fp.seek(0, os.SEEK_END)
+			ret = int(self._fp.tell())
+		finally:
+			self._fp.seek(off, os.SEEK_SET)
+		return ret
+
+	@property
+	def total_lba(self) -> int:
+		if "total_lba" in self._cached:
+			return self._cached["total_lba"]
+		size = self.total_size
+		if size % self.sector != 0:
+			raise ValueError("size misaligned with sector size")
+		return size // self.sector
+
+	def seek_lba(self, lba: int) -> int:
+		if lba >= self.total_lba:
+			raise ValueError("lba out of file")
+		return self._fp.seek(self.sector * lba, os.SEEK_SET)
+
+	def read_lba(self, lba: int) -> bytes:
+		off = self._fp.tell()
+		try:
+			self.seek_lba(lba)
+			ret = self._fp.read(self.sector)
+		finally:
+			self._fp.seek(off, os.SEEK_SET)
+		return ret
+
+	def read_lbas(self, lba: int, count: int = 0) -> bytes:
+		return bytes().join(self.read_lba(lba + i) for i in range(count))
+
+	def write_lba(self, lba: int, b: bytes) -> int:
+		if not self._fp.writable():
+			raise IOError("write is not allow")
+		off = self._fp.tell()
+		try:
+			data = bytes_pad(b, self.sector, trunc=True)
+			self.seek_lba(lba)
+			ret = self._fp.write(data)
+		finally:
+			self._fp.seek(off, os.SEEK_SET)
+		return ret
+
+	def write_lbas(self, lba: int, b: bytes, count: int = 0) -> bytes:
+		s = self.sector
+		if count == 0:
+			if len(b) % s != 0: raise ValueError(
+				"buffer misaligned with sector size"
+			)
+			count = len(b) // s
+		if count * s > len(b):
+			raise ValueError("buffer too small")
+		for i in range(count):
+			t = b[i * s:(i + 1) * s]
+			self.write_lba(lba + i, t)
+		return b
+
+	def __init__(self):
+		self._min_sector = 512
+		self._fp = None
+		self._opened = False
+		self._sector = 0
+		self._cached = {}
+		self.align = 0x100000

builder/disk/layout/disk.py

@@ -0,0 +1,37 @@
+from io import RawIOBase
+from builder.disk.layout.layout import DiskLayout
+from builder.disk.layout.mbr.layout import DiskLayoutMBR
+from builder.disk.layout.gpt.layout import DiskLayoutGPT
+
+
+class Disk:
+	layouts: list[tuple[type[DiskLayout], list[str]]] = [
+		(DiskLayoutGPT, ["gpt", "guid", "efi", "uefi"]),
+		(DiskLayoutMBR, ["mbr", "bios", "legacy", "msdos", "dos"]),
+	]
+
+	@staticmethod
+	def probe_layout(
+		fp: RawIOBase = None,
+		path: str = None,
+		sector: int = 512,
+		fallback: str | type[DiskLayout] = None,
+	) -> DiskLayout | None:
+		for layout in Disk.layouts:
+			d = layout[0](fp, path, sector)
+			if d.loaded: return d
+		if fallback:
+			if type(fallback) is str:
+				fallback = Disk.find_layout(fallback)
+			if type(fallback) is type[DiskLayout]:
+				d = fallback(fp, path, sector)
+				if d.loaded: return d
+		return None
+
+	@staticmethod
+	def find_layout(name: str) -> type[DiskLayout]:
+		return next((
+			layout[0]
+			for layout in Disk.layouts
+			if name in layout[1]
+		), None)

builder/disk/layout/gpt/layout.py

@@ -0,0 +1,402 @@
+import ctypes
+from io import RawIOBase
+from uuid import UUID, uuid4
+from ctypes import sizeof
+from binascii import crc32
+from logging import getLogger
+from builder.lib.area import Area, Areas
+from builder.lib.utils import bytes_pad, round_up, round_down
+from builder.disk.layout.layout import DiskLayout
+from builder.disk.layout.mbr.types import DiskTypesMBR
+from builder.disk.layout.mbr.struct import MasterBootRecord, MbrPartEntry
+from builder.disk.layout.gpt.struct import EfiPartTableHeader, EfiPartEntry
+from builder.disk.layout.gpt.types import DiskTypesGPT
+from builder.disk.layout.gpt.uefi import EfiGUID
+from builder.disk.layout.gpt.part import DiskPartGPT
+log = getLogger(__name__)
+
+
+NULL_UUID = UUID("00000000-0000-0000-0000-000000000000")
+
+
+class DiskLayoutGPT(DiskLayout):
+	boot_code: bytes
+	uuid: UUID
+	main_entries_lba: int
+	entries_count: int
+	partitions: list[DiskPartGPT]
+
+	@property
+	def id(self) -> str:
+		return str(self.uuid)
+
+	@id.setter
+	def id(self, val: str):
+		self.uuid = UUID(val)
+
+	@property
+	def entries_size(self) -> int:
+		return self.entries_count * sizeof(EfiPartEntry)
+
+	@property
+	def entries_sectors(self) -> int:
+		return self.entries_size // self.sector
+
+	@property
+	def backup_entries_lba(self) -> int:
+		return self.total_lba - self.entries_sectors - 1
+
+	@property
+	def main_entries(self) -> Area:
+		return Area(
+			start=self.main_entries_lba,
+			size=self.entries_sectors
+		).fixup()
+
+	@property
+	def backup_entries(self) -> Area:
+		return Area(
+			start=self.backup_entries_lba,
+			size=self.entries_sectors
+		).fixup()
+
+	def add_partition(
+		self,
+		ptype: str | UUID = None,
+		start: int = -1,
+		end: int = -1,
+		size: int = -1,
+		area: Area = None,
+		name: str = None,
+		uuid: UUID = None,
+	) -> DiskPartGPT | None:
+		area = self.find_free_area(start, end, size, area)
+		if area is None: return None
+		if ptype is None: ptype = "linux"
+		t = DiskTypesGPT.lookup_one_uuid(ptype)
+		if t is None: raise ValueError(f"unknown type {ptype}")
+		self.resort_partitions()
+		idx = len(self.partitions)
+		part = DiskPartGPT(self, None, idx)
+		part.start_lba = area.start
+		part.end_lba = area.end
+		part.type_uuid = t
+		part.uuid = uuid or uuid4()
+		part.part_name = name or ""
+		self.partitions.insert(idx, part)
+		log.info(
+			f"Added partition {idx} "
+			f"start LBA {area.start} "
+			f"end LBA {area.end} "
+			f"type {ptype}"
+		)
+		return part
+
+	def add_partition_from(self, config: dict) -> DiskPartGPT:
+		area = self.parse_free_area(config)
+		if area is None: raise ValueError("no free area found")
+		ptype = config["ptype"] if "ptype" in config else None
+		pname = config["pname"] if "pname" in config else None
+		puuid = UUID(config["puuid"]) if "puuid" in config else None
+		part = self.add_partition(ptype, area=area, name=pname, uuid=puuid)
+		if part:
+			if "attributes" in config:
+				part.attributes = config["attributes"]
+		return part
+
+	def get_usable_area(self) -> Area | None:
+		if self.main_entries_lba < 2: return None
+		if self.entries_count <= 0: return None
+		start = 2
+		end = round_down(self.backup_entries_lba, self.align_lba)
+		rs = min((part.start_lba for part in self.partitions), default=end)
+		first = self.main_entries_lba + self.entries_sectors + 1
+		if len(self.partitions) == 0 or first <= rs: start = first
+		start = round_up(start, self.align_lba)
+		return Area(start=start, end=end - 1).fixup()
+
+	def get_used_areas(self, table=False) -> Areas:
+		areas = Areas()
+		if table:
+			areas.add(start=0, size=2)
+			areas.add(area=self.main_entries)
+			areas.add(area=self.backup_entries)
+			areas.add(start=self.total_lba - 1, size=1)
+		for part in self.partitions:
+			areas.add(area=part.to_area())
+		areas.merge()
+		return areas
+
+	def get_free_areas(self) -> Areas:
+		areas = Areas()
+		usable = self.get_usable_area()
+		if usable is None: return areas
+		areas.add(area=usable)
+		for part in self.partitions:
+			areas.splice(area=part.to_area())
+		areas.align(self.align_lba)
+		return areas
+
+	def try_load_pmbr(self) -> MasterBootRecord | None:
+		pmbr_data = self.read_lba(0)
+		pmbr = MasterBootRecord.from_buffer_copy(pmbr_data)
+		if not pmbr.check_signature():
+			log.debug("Bad protective MBR")
+			return None
+		self.boot_code = pmbr.boot_code
+		return pmbr
+
+	def get_pmbr_entry(self, pmbr: MasterBootRecord) -> MbrPartEntry | None:
+		if pmbr is None: return None
+		ps = pmbr.partitions
+		tid = DiskTypesMBR.lookup_one_id("gpt")
+		return next((part for part in ps if part.type_id == tid), None)
+
+	def try_load_entries(self, gpt: EfiPartTableHeader) -> bool:
+		if gpt is None: return False
+		es = sizeof(EfiPartEntry)
+		if gpt.entry_size != es:
+			log.debug("Unsupported GPT entry size")
+			log.debug(f"size {es} != {gpt.entry_size}")
+			return False
+		size = gpt.entries_count * gpt.entry_size
+		sectors = size // self.sector
+		if size % self.sector != 0:
+			log.debug("GPT entries size misaligned with sector size")
+			sectors += 1
+		parts = self.read_lbas(gpt.part_entry_lba, sectors)
+		crc = crc32(parts[0:size], 0)
+		if crc != gpt.entries_crc32:
+			log.debug("GPT entries crc32 mismatch")
+			log.debug(f"crc32 {crc} != {gpt.entries_crc32}")
+			return False
+		self.partitions.clear()
+		for idx in range(gpt.entries_count):
+			start = idx * gpt.entry_size
+			size = min(es, gpt.entry_size)
+			data = parts[start:start + size]
+			entry = EfiPartEntry.from_buffer_copy(data)
+			if entry.type_guid.to_uuid() == NULL_UUID: continue
+			idx = len(self.partitions)
+			part = DiskPartGPT(self, entry, idx)
+			self.partitions.insert(idx, part)
+			log.debug(
+				f"Found partition {idx} "
+				f"start LBA {part.start_lba} "
+				f"end LBA {part.end_lba} "
+				f"name {part.part_name} "
+			)
+		self.uuid = gpt.disk_guid.to_uuid()
+		self.main_entries_lba = gpt.part_entry_lba
+		self.entries_count = gpt.entries_count
+		log.info("Found %d partitions in GPT", len(self.partitions))
+		return True
+
+	def try_load_lba(self, lba: int) -> EfiPartTableHeader:
+		log.debug(f"Try GPT at LBA {lba}")
+		gpt_data = self.read_lba(lba)
+		gpt = EfiPartTableHeader.from_buffer_copy(gpt_data)
+		if gpt and gpt.check_header():
+			log.debug(f"Loaded GPT at LBA {lba}")
+		else:
+			log.debug(f"Bad GPT at LBA {lba}")
+			gpt = None
+		return gpt
+
+	def try_load_gpt(self, pmbr: MasterBootRecord) -> bool:
+		lba = -1
+		pent = self.get_pmbr_entry(pmbr)
+		if pent:
+			lba = pent.start_lba
+			gpt = self.try_load_lba(lba)
+			if self.try_load_entries(gpt): return True
+		if lba != 1:
+			lba = 1
+			gpt = self.try_load_lba(lba)
+			if self.try_load_entries(gpt): return True
+		log.debug("Main GPT table unavailable")
+		lba = -1
+		if pent:
+			lba = pent.size_lba - 1
+			gpt = self.try_load_lba(lba)
+			if self.try_load_entries(gpt): return True
+		last = self.total_lba - 1
+		if lba != last:
+			lba = 1
+			gpt = self.try_load_lba(last)
+			if self.try_load_entries(gpt): return True
+		log.debug("Backup GPT table unavailable")
+		return False
+
+	def load_header(self) -> bool:
+		self.unload()
+		pmbr = self.try_load_pmbr()
+		if pmbr:
+			pent = self.get_pmbr_entry(pmbr)
+			if pent is None:
+				log.debug("GPT not found in PMBR")
+				return False
+		if not self.try_load_gpt(pmbr): return False
+		log.info("GPT partition tables loaded")
+		self.loaded = True
+		return True
+
+	def create_pmbr(self) -> MasterBootRecord:
+		new_pmbr = MasterBootRecord()
+		new_pmbr.fill_header()
+		if self.boot_code:
+			size = MasterBootRecord.boot_code.size
+			code = bytes_pad(self.boot_code, size, trunc=True)
+			ctypes.memmove(new_pmbr.boot_code, code, size)
+		ppart = MbrPartEntry()
+		ppart.start_lba = 1
+		ppart.size_lba = self.total_lba - 1
+		ppart.start_head, ppart.start_track, ppart.start_sector = 0, 0, 2
+		ppart.end_head, ppart.end_track, ppart.end_sector = 255, 255, 255
+		ppart.set_type("gpt")
+		new_pmbr.partitions[0] = ppart
+		return new_pmbr
+
+	def create_gpt_entries(self) -> bytes:
+		es = sizeof(EfiPartEntry)
+		ec = self.entries_count if self.entries_count > 0 else 128
+		if len(self.partitions) > ec:
+			raise OverflowError("too many partitions")
+		self.resort_partitions()
+		data = bytes().join(
+			part.to_entry()
+			for part in self.partitions
+			if part.type_uuid != NULL_UUID
+		)
+		if len(data) > ec * es:
+			raise OverflowError("partitions buffer too big")
+		return bytes_pad(data, ec * es)
+
+	def create_gpt_head(
+		self,
+		entries: bytes,
+		backup: bool = False
+	) -> EfiPartTableHeader:
+		if self.total_lba < 128:
+			raise ValueError("disk too small")
+		new_gpt = EfiPartTableHeader()
+		new_gpt.fill_header()
+		new_gpt.entry_size = sizeof(EfiPartEntry)
+		new_gpt.entries_count = self.entries_count
+		new_gpt.disk_guid = EfiGUID.from_uuid(self.uuid)
+		le = len(entries)
+		if le != new_gpt.entries_count * new_gpt.entry_size:
+			raise ValueError("entries size mismatch")
+		if le % self.sector != 0:
+			raise ValueError("bad entries size")
+		entries_sectors = le // self.sector
+		if entries_sectors != self.entries_sectors:
+			raise ValueError("entries sectors mismatch")
+		usable = self.get_usable_area()
+		new_gpt.first_usable_lba = usable.start
+		new_gpt.last_usable_lba = usable.end
+		if backup:
+			new_gpt.part_entry_lba = self.backup_entries_lba
+			new_gpt.current_lba = self.total_lba - 1
+			new_gpt.alternate_lba = 1
+		else:
+			new_gpt.part_entry_lba = self.main_entries_lba
+			new_gpt.current_lba = 1
+			new_gpt.alternate_lba = self.total_lba - 1
+		new_gpt.entries_crc32 = crc32(entries)
+		new_gpt.header.update_crc32(bytes(new_gpt))
+		return new_gpt
+
+	def recreate_header(self) -> dict:
+		new_pmbr = self.create_pmbr()
+		if new_pmbr is None: raise RuntimeError("generate pmbr failed")
+		log.debug(f"Protective MBR: {new_pmbr}")
+		new_gpt_entries = self.create_gpt_entries()
+		if new_gpt_entries is None: raise RuntimeError("generate gpt entries failed")
+		new_gpt_main = self.create_gpt_head(new_gpt_entries, backup=False)
+		if new_gpt_main is None: raise RuntimeError("generate gpt main head failed")
+		log.debug(f"GPT Main head: {new_gpt_main}")
+		new_gpt_back = self.create_gpt_head(new_gpt_entries, backup=True)
+		if new_gpt_back is None: raise RuntimeError("generate gpt backup head failed")
+		log.debug(f"GPT Backup head: {new_gpt_back}")
+		return {
+			"pmbr": new_pmbr,
+			"main": new_gpt_main,
+			"backup": new_gpt_back,
+			"entries": new_gpt_entries,
+		}
+
+	def write_table(self, table, lba: int):
+		data = bytes(table)
+		size = round_up(len(data), self.sector)
+		data = bytes_pad(data, size)
+		sectors = size // self.sector
+		area = Area(start=lba, size=sectors)
+		if self.get_used_areas().is_area_in(area):
+			raise RuntimeError("attempt write table into partition")
+		log.debug(f"Wrote {len(data)} bytes to LBA {lba} with {sectors} sectors")
+		self.write_lbas(lba, data, sectors)
+
+	def write_header(self):
+		if not self._fp.writable():
+			raise IOError("write is not allow")
+		data = self.recreate_header()
+		self.write_table(data["pmbr"], 0)
+		self.write_table(data["main"], data["main"].current_lba)
+		self.write_table(data["backup"], data["backup"].current_lba)
+		self.write_table(data["entries"], data["main"].part_entry_lba)
+		self.write_table(data["entries"], data["backup"].part_entry_lba)
+		self._fp.flush()
+		log.info("GPT partition table saved")
+
+	def unload(self):
+		self.boot_code = bytes()
+		self.uuid = uuid4()
+		self.main_entries_lba = 2
+		self.entries_count = 128
+		self.loaded = False
+		self.partitions.clear()
+
+	def reload(self):
+		if not self.load_header():
+			raise IOError("Load GPT header failed")
+
+	def save(self):
+		self.write_header()
+
+	def create(self):
+		self.unload()
+		log.info("Created new GPT partition table")
+
+	def set_from(self, config: dict):
+		if "uuid" in config: self.uuid = UUID(config["uuid"])
+		if "entries_offset" in config:
+			self.main_entries_lba = self.size_to_sectors(config["entries_lba"])
+		if "entries_lba" in config:
+			self.main_entries_lba = config["entries_lba"]
+		if "entries_count" in config:
+			self.entries_count = config["entries_count"]
+
+	def to_dict(self) -> dict:
+		return {
+			"uuid": self.uuid,
+			"free": self.get_free_size(),
+			"sector": self.sector,
+			"sectors": self.total_lba,
+			"size": self.total_size,
+			"partitions": self.partitions,
+			"usable_area": self.get_usable_area(),
+			"free_area": self.get_free_areas(),
+			"entries_count": self.entries_count,
+			"main_entries": self.main_entries,
+			"backup_entries": self.backup_entries,
+		}
+
+	def __init__(self, fp: RawIOBase = None, path: str = None, sector: int = 512):
+		super().__init__(fp=fp, path=path, sector=sector)
+		self.boot_code = bytes()
+		self.uuid = NULL_UUID
+		self.main_entries_lba = -1
+		self.entries_count = -1
+		self.partitions = []
+		self.load_header()

builder/disk/layout/gpt/part.py

@@ -0,0 +1,130 @@
+from uuid import UUID
+from logging import getLogger
+from builder.disk.layout.layout import DiskLayout, DiskPart
+from builder.disk.layout.gpt.struct import EfiPartEntry
+from builder.disk.layout.gpt.types import DiskTypesGPT
+from builder.disk.layout.gpt.uefi import EfiGUID
+log = getLogger(__name__)
+
+
+class DiskPartGPT(DiskPart):
+	layout: DiskLayout
+	type_uuid: UUID
+	uuid: UUID
+	idx: int
+	_part_name: str
+	_attributes: int
+	_start_lba: int
+	_end_lba: int
+
+	@property
+	def part_name(self) -> str: return self._part_name
+
+	@part_name.setter
+	def part_name(self, name: str): self._part_name = name
+
+	@property
+	def id(self) -> str:
+		return str(self.uuid)
+
+	@id.setter
+	def id(self, val: str):
+		self.uuid = UUID(val)
+
+	@property
+	def type(self) -> str:
+		return DiskTypesGPT.lookup_one_name(self.type_uuid)
+
+	@type.setter
+	def type(self, val: str):
+		tid = DiskTypesGPT.lookup_one_uuid(val)
+		if tid is None: raise ValueError(f"unknown type {val}")
+		self.type_uuid = tid
+
+	@property
+	def start_lba(self) -> int:
+		return self._start_lba
+
+	@start_lba.setter
+	def start_lba(self, start_lba: int):
+		self._start_lba = start_lba
+
+	@property
+	def end_lba(self) -> int:
+		return self._end_lba
+
+	@end_lba.setter
+	def end_lba(self, end_lba: int):
+		self._end_lba = end_lba
+
+	@property
+	def size_lba(self) -> int:
+		return self.end_lba - self.start_lba + 1
+
+	@size_lba.setter
+	def size_lba(self, size_lba: int):
+		self.end_lba = size_lba + self.start_lba - 1
+
+	@property
+	def attributes(self) -> int:
+		return self._attributes
+
+	@attributes.setter
+	def attributes(self, attributes: int):
+		self._attributes = attributes
+
+	@property
+	def partlabel(self) -> str:
+		return self.part_name
+
+	@property
+	def partuuid(self) -> str:
+		return self.id
+
+	def load_entry(self, part: EfiPartEntry):
+		self.type_uuid = part.type_guid.to_uuid()
+		self.uuid = part.unique_guid.to_uuid()
+		self.start_lba = part.start_lba
+		self.end_lba = part.end_lba
+		self.attributes = part.attributes
+		self.part_name = part.get_part_name()
+
+	def to_entry(self) -> EfiPartEntry:
+		part = EfiPartEntry()
+		part.type_guid = EfiGUID.from_uuid(self.type_uuid)
+		part.unique_guid = EfiGUID.from_uuid(self.uuid)
+		part.start_lba = self.start_lba
+		part.end_lba = self.end_lba
+		part.attributes = self.attributes
+		part.set_part_name(self.part_name)
+		return part
+
+	def __init__(
+		self,
+		layout: DiskLayout,
+		part: EfiPartEntry | None,
+		idx: int
+	):
+		super().__init__()
+		self.layout = layout
+		self.idx = idx
+		self.part_name = None
+		self.start_lba = 0
+		self.end_lba = 0
+		self.attributes = 0
+		if part: self.load_entry(part)
+		from builder.disk.layout.gpt.layout import DiskLayoutGPT
+		if not isinstance(layout, DiskLayoutGPT):
+			raise TypeError("require DiskLayoutGPT")
+
+	def to_dict(self) -> dict:
+		return {
+			"type_uuid": self.type_uuid,
+			"type_name": self.type,
+			"uuid": self.uuid,
+			"part_name": self.part_name,
+			"attributes": self.attributes,
+			"start_lba": self.start_lba,
+			"end_lba": self.end_lba,
+			"size_lba": self.size_lba,
+		}

builder/disk/layout/gpt/struct.py

@@ -0,0 +1,135 @@
+import ctypes
+from uuid import UUID
+from logging import getLogger
+from builder.lib.utils import bytes_pad
+from builder.lib.serializable import SerializableDict
+from builder.disk.layout.gpt.types import DiskTypesGPT
+from builder.disk.layout.gpt.uefi import EfiTableHeader, EfiGUID
+log = getLogger(__name__)
+
+
+class EfiPartTableHeader(ctypes.Structure, SerializableDict):
+	_pack_ = 1
+	_fields_ = [
+		("header",           EfiTableHeader),
+		("current_lba",      ctypes.c_uint64),
+		("alternate_lba",    ctypes.c_uint64),
+		("first_usable_lba", ctypes.c_uint64),
+		("last_usable_lba",  ctypes.c_uint64),
+		("disk_guid",        EfiGUID),
+		("part_entry_lba",   ctypes.c_uint64),
+		("entries_count",    ctypes.c_uint32),
+		("entry_size",       ctypes.c_uint32),
+		("entries_crc32",    ctypes.c_uint32),
+	]
+	EFI_PART_SIGN = b'EFI PART'
+
+	@property
+	def signature(self) -> ctypes.c_uint64:
+		return self.header.signature
+
+	@property
+	def revision(self) -> ctypes.c_uint64:
+		return self.header.revision
+
+	@property
+	def header_size(self) -> ctypes.c_uint64:
+		return self.header.header_size
+
+	@property
+	def crc32(self) -> ctypes.c_uint64:
+		return self.header.crc32
+
+	def fill_header(self):
+		self.header.set_signature(self.EFI_PART_SIGN)
+		self.header.header_size = 92
+		self.header.revision = 0x00010000
+
+	def check_header(self) -> bool:
+		if not self.header.check_signature(self.EFI_PART_SIGN):
+			log.debug("GPT signature mismatch")
+			return False
+		if self.header.header_size < 92:
+			log.debug("GPT header size too small")
+			log.debug(f"{self.header.header_size} < 92")
+			return False
+		if not self.header.check_revision(1, 0):
+			log.debug("GPT revision mismatch")
+			log.debug(f"{self.header.get_revision()} != 1.0")
+			return False
+		if not self.header.check_crc32():
+			log.debug("GPT crc32 check failed")
+			return False
+		if self.entry_size != 128:
+			log.debug("GPT entry size unsupported")
+			log.debug(f"{self.entry_size} != 128")
+			return False
+		return True
+
+	def to_dict(self) -> dict:
+		return {
+			"header": self.header,
+			"current_lba": self.current_lba,
+			"alternate_lba": self.alternate_lba,
+			"first_usable_lba": self.first_usable_lba,
+			"last_usable_lba": self.last_usable_lba,
+			"disk_guid": str(self.disk_guid),
+			"part_entry_lba": self.part_entry_lba,
+			"entries_count": self.entries_count,
+			"entry_size": self.entry_size,
+			"entries_crc32": self.entries_crc32,
+		}
+
+
+class EfiPartEntry(ctypes.Structure, SerializableDict):
+	_pack_ = 1
+	_fields_ = [
+		("type_guid",       EfiGUID),
+		("unique_guid",     EfiGUID),
+		("start_lba",       ctypes.c_uint64),
+		("end_lba",         ctypes.c_uint64),
+		("attributes",      ctypes.c_uint64),
+		("part_name",       ctypes.c_byte * 72),
+	]
+
+	def get_type_name(self) -> str:
+		return DiskTypesGPT.lookup_one_name(self.type_guid)
+
+	def get_type_uuid(self) -> UUID:
+		return DiskTypesGPT.lookup_one_uuid(self.type_guid)
+
+	def set_type(self, t: EfiGUID | UUID | str):
+		g = DiskTypesGPT.lookup_one_guid(t)
+		if g is None: raise ValueError(f"bad type {t}")
+		self.type_guid = g
+
+	def get_part_name(self) -> str:
+		return self.part_name.decode("UTF-16LE").rstrip('\u0000')
+
+	def set_part_name(self, name: str):
+		size = EfiPartEntry.part_name.size
+		data = name.encode("UTF-16LE")
+		if len(data) >= size: raise ValueError("name too long")
+		data = bytes_pad(data, size)
+		ctypes.memmove(self.part_name, data, size)
+
+	def check_type(self, t: EfiGUID | UUID | str) -> bool:
+		return DiskTypesGPT.equal(self.type_guid, t)
+
+	@property
+	def total_lba(self):
+		return self.end_lba - self.start_lba + 1
+
+	def to_dict(self) -> dict:
+		return {
+			"type_guid": str(self.type_guid),
+			"unique_guid": str(self.unique_guid),
+			"start_lba": self.start_lba,
+			"end_lba": self.end_lba,
+			"attributes": self.attributes,
+			"part_name": self.get_part_name(),
+		}
+
+
+assert(ctypes.sizeof(EfiPartTableHeader()) == 92)
+assert(ctypes.sizeof(EfiPartEntry()) == 128)

builder/disk/layout/gpt/types.py

@@ -0,0 +1,263 @@
+from uuid import UUID
+from logging import getLogger
+from builder.disk.layout.gpt.uefi import EfiGUID
+from builder.disk.layout.types import DiskTypes
+log = getLogger(__name__)
+
+
+class DiskTypesGPT(DiskTypes):
+	@staticmethod
+	def lookup(t) -> list[tuple[UUID, str]]:
+		ret = []
+		ts = DiskTypesGPT.types
+		from builder.disk.layout.gpt.part import DiskPartGPT
+		from builder.disk.layout.gpt.struct import EfiPartEntry
+		if isinstance(t, DiskPartGPT):
+			u = t.type_uuid
+		elif isinstance(t, EfiPartEntry):
+			u = t.type_guid.to_uuid()
+		elif type(t) is EfiGUID:
+			u = t.to_uuid()
+		elif type(t) is UUID:
+			u = t
+		elif type(t) is str:
+			ret = [tn for tn in ts if tn[1] == t]
+			if len(ret) > 0: return ret
+			try: u = UUID(t)
+			except: return ret
+		else: return ret
+		return [tn for tn in ts if tn[0] == u]
+
+	def lookup_one(t) -> tuple[UUID, str]:
+		l = DiskTypesGPT.lookup(t)
+		return l[0] if len(l) > 0 else None
+
+	@staticmethod
+	def lookup_one_uuid(t) -> UUID:
+		r = DiskTypesGPT.lookup_one(t)
+		return r[0] if r else None
+
+	@staticmethod
+	def lookup_one_guid(t) -> EfiGUID:
+		u = DiskTypesGPT.lookup_one_uuid(t)
+		return EfiGUID.from_uuid(u)
+
+	@staticmethod
+	def lookup_one_name(t) -> str:
+		r = DiskTypesGPT.lookup_one(t)
+		return r[1] if r else None
+
+	@staticmethod
+	def lookup_names(t) -> list[str]:
+		r = DiskTypesGPT.lookup(t)
+		return [t[1] for t in r]
+
+	@staticmethod
+	def equal(l, r) -> bool:
+		lf = DiskTypesGPT.lookup_one_uuid(l)
+		rf = DiskTypesGPT.lookup_one_uuid(r)
+		if lf is None or rf is None: return False
+		return lf == rf
+
+	types: list[tuple[UUID, str]] = [
+		(UUID("C12A7328-F81F-11D2-BA4B-00A0C93EC93B"), "efi"),
+		(UUID("C12A7328-F81F-11D2-BA4B-00A0C93EC93B"), "uefi"),
+		(UUID("C12A7328-F81F-11D2-BA4B-00A0C93EC93B"), "esp"),
+		(UUID("024DEE41-33E7-11D3-9D69-0008C781F39F"), "mbr-part-scheme"),
+		(UUID("D3BFE2DE-3DAF-11DF-BA40-E3A556D89593"), "intel-fast-flash"),
+		(UUID("21686148-6449-6E6F-744E-656564454649"), "bios"),
+		(UUID("21686148-6449-6E6F-744E-656564454649"), "bios-boot"),
+		(UUID("F4019732-066E-4E12-8273-346C5641494F"), "sony-boot-partition"),
+		(UUID("BFBFAFE7-A34F-448A-9A5B-6213EB736C22"), "lenovo-boot-partition"),
+		(UUID("9E1A2D38-C612-4316-AA26-8B49521E5A8B"), "powerpc-prep-boot"),
+		(UUID("7412F7D5-A156-4B13-81DC-867174929325"), "onie-boot"),
+		(UUID("D4E6E2CD-4469-46F3-B5CB-1BFF57AFC149"), "onie-config"),
+		(UUID("E3C9E316-0B5C-4DB8-817D-F92DF00215AE"), "microsoft-reserved"),
+		(UUID("E3C9E316-0B5C-4DB8-817D-F92DF00215AE"), "msr"),
+		(UUID("EBD0A0A2-B9E5-4433-87C0-68B6B72699C7"), "microsoft-basic-data"),
+		(UUID("EBD0A0A2-B9E5-4433-87C0-68B6B72699C7"), "basic"),
+		(UUID("5808C8AA-7E8F-42E0-85D2-E1E90434CFB3"), "microsoft-ldm-metadata"),
+		(UUID("AF9B60A0-1431-4F62-BC68-3311714A69AD"), "microsoft-ldm-data"),
+		(UUID("DE94BBA4-06D1-4D40-A16A-BFD50179D6AC"), "windows-recovery-environment"),
+		(UUID("E75CAF8F-F680-4CEE-AFA3-B001E56EFC2D"), "microsoft-storage-spaces"),
+		(UUID("75894C1E-3AEB-11D3-B7C1-7B03A0000000"), "hp-ux-data"),
+		(UUID("E2A1E728-32E3-11D6-A682-7B03A0000000"), "hp-ux-service"),
+		(UUID("0657FD6D-A4AB-43C4-84E5-0933C84B4F4F"), "linux-swap"),
+		(UUID("0FC63DAF-8483-4772-8E79-3D69D8477DE4"), "linux"),
+		(UUID("0FC63DAF-8483-4772-8E79-3D69D8477DE4"), "linux-filesystem"),
+		(UUID("3B8F8425-20E0-4F3B-907F-1A25A76F98E8"), "linux-server-data"),
+		(UUID("3B8F8425-20E0-4F3B-907F-1A25A76F98E8"), "linux-srv"),
+		(UUID("44479540-F297-41B2-9AF7-D131D5F0458A"), "linux-root-x86"),
+		(UUID("4F68BCE3-E8CD-4DB1-96E7-FBCAF984B709"), "linux-root-x86-64"),
+		(UUID("6523F8AE-3EB1-4E2A-A05A-18B695AE656F"), "linux-root-alpha"),
+		(UUID("D27F46ED-2919-4CB8-BD25-9531F3C16534"), "linux-root-arc"),
+		(UUID("69DAD710-2CE4-4E3C-B16C-21A1D49ABED3"), "linux-root-arm"),
+		(UUID("B921B045-1DF0-41C3-AF44-4C6F280D3FAE"), "linux-root-arm64"),
+		(UUID("993D8D3D-F80E-4225-855A-9DAF8ED7EA97"), "linux-root-ia64"),
+		(UUID("77055800-792C-4F94-B39A-98C91B762BB6"), "linux-root-loongarch64"),
+		(UUID("37C58C8A-D913-4156-A25F-48B1B64E07F0"), "linux-root-mips32le"),
+		(UUID("700BDA43-7A34-4507-B179-EEB93D7A7CA3"), "linux-root-mips64le"),
+		(UUID("1AACDB3B-5444-4138-BD9E-E5C2239B2346"), "linux-root-hppa"),
+		(UUID("1DE3F1EF-FA98-47B5-8DCD-4A860A654D78"), "linux-root-ppc"),
+		(UUID("912ADE1D-A839-4913-8964-A10EEE08FBD2"), "linux-root-ppc64"),
+		(UUID("C31C45E6-3F39-412E-80FB-4809C4980599"), "linux-root-ppc64le"),
+		(UUID("60D5A7FE-8E7D-435C-B714-3DD8162144E1"), "linux-root-riscv32"),
+		(UUID("72EC70A6-CF74-40E6-BD49-4BDA08E8F224"), "linux-root-riscv64"),
+		(UUID("08A7ACEA-624C-4A20-91E8-6E0FA67D23F9"), "linux-root-s390"),
+		(UUID("5EEAD9A9-FE09-4A1E-A1D7-520D00531306"), "linux-root-s390x"),
+		(UUID("C50CDD70-3862-4CC3-90E1-809A8C93EE2C"), "linux-root-tilegx"),
+		(UUID("8DA63339-0007-60C0-C436-083AC8230908"), "linux-reserved"),
+		(UUID("933AC7E1-2EB4-4F13-B844-0E14E2AEF915"), "linux-home"),
+		(UUID("A19D880F-05FC-4D3B-A006-743F0F84911E"), "linux-raid"),
+		(UUID("E6D6D379-F507-44C2-A23C-238F2A3DF928"), "linux-lvm"),
+		(UUID("4D21B016-B534-45C2-A9FB-5C16E091FD2D"), "linux-variable-data"),
+		(UUID("4D21B016-B534-45C2-A9FB-5C16E091FD2D"), "linux-var-data"),
+		(UUID("4D21B016-B534-45C2-A9FB-5C16E091FD2D"), "linux-var"),
+		(UUID("7EC6F557-3BC5-4ACA-B293-16EF5DF639D1"), "linux-temporary-data"),
+		(UUID("7EC6F557-3BC5-4ACA-B293-16EF5DF639D1"), "linux-tmp-data"),
+		(UUID("7EC6F557-3BC5-4ACA-B293-16EF5DF639D1"), "linux-tmp"),
+		(UUID("75250D76-8CC6-458E-BD66-BD47CC81A812"), "linux-usr-x86"),
+		(UUID("8484680C-9521-48C6-9C11-B0720656F69E"), "linux-usr-x86-64"),
+		(UUID("E18CF08C-33EC-4C0D-8246-C6C6FB3DA024"), "linux-usr-alpha"),
+		(UUID("7978A683-6316-4922-BBEE-38BFF5A2FECC"), "linux-usr-arc"),
+		(UUID("7D0359A3-02B3-4F0A-865C-654403E70625"), "linux-usr-arm"),
+		(UUID("B0E01050-EE5F-4390-949A-9101B17104E9"), "linux-usr-arm64"),
+		(UUID("4301D2A6-4E3B-4B2A-BB94-9E0B2C4225EA"), "linux-usr-ia64"),
+		(UUID("E611C702-575C-4CBE-9A46-434FA0BF7E3F"), "linux-usr-loongarch64"),
+		(UUID("0F4868E9-9952-4706-979F-3ED3A473E947"), "linux-usr-mips32le"),
+		(UUID("C97C1F32-BA06-40B4-9F22-236061B08AA8"), "linux-usr-mips64le"),
+		(UUID("DC4A4480-6917-4262-A4EC-DB9384949F25"), "linux-usr-hppa"),
+		(UUID("7D14FEC5-CC71-415D-9D6C-06BF0B3C3EAF"), "linux-usr-ppc"),
+		(UUID("2C9739E2-F068-46B3-9FD0-01C5A9AFBCCA"), "linux-usr-ppc64"),
+		(UUID("15BB03AF-77E7-4D4A-B12B-C0D084F7491C"), "linux-usr-ppc64le"),
+		(UUID("B933FB22-5C3F-4F91-AF90-E2BB0FA50702"), "linux-usr-riscv32"),
+		(UUID("BEAEC34B-8442-439B-A40B-984381ED097D"), "linux-usr-riscv64"),
+		(UUID("CD0F869B-D0FB-4CA0-B141-9EA87CC78D66"), "linux-usr-s390"),
+		(UUID("8A4F5770-50AA-4ED3-874A-99B710DB6FEA"), "linux-usr-s390x"),
+		(UUID("55497029-C7C1-44CC-AA39-815ED1558630"), "linux-usr-tilegx"),
+		(UUID("D13C5D3B-B5D1-422A-B29F-9454FDC89D76"), "linux-root-verity-x86"),
+		(UUID("2C7357ED-EBD2-46D9-AEC1-23D437EC2BF5"), "linux-root-verity-x86-64"),
+		(UUID("FC56D9E9-E6E5-4C06-BE32-E74407CE09A5"), "linux-root-verity-alpha"),
+		(UUID("24B2D975-0F97-4521-AFA1-CD531E421B8D"), "linux-root-verity-arc"),
+		(UUID("7386CDF2-203C-47A9-A498-F2ECCE45A2D6"), "linux-root-verity-arm"),
+		(UUID("DF3300CE-D69F-4C92-978C-9BFB0F38D820"), "linux-root-verity-arm64"),
+		(UUID("86ED10D5-B607-45BB-8957-D350F23D0571"), "linux-root-verity-ia64"),
+		(UUID("F3393B22-E9AF-4613-A948-9D3BFBD0C535"), "linux-root-verity-loongarch64"),
+		(UUID("D7D150D2-2A04-4A33-8F12-16651205FF7B"), "linux-root-verity-mips32le"),
+		(UUID("16B417F8-3E06-4F57-8DD2-9B5232F41AA6"), "linux-root-verity-mips64le"),
+		(UUID("D212A430-FBC5-49F9-A983-A7FEEF2B8D0E"), "linux-root-verity-hppa"),
+		(UUID("98CFE649-1588-46DC-B2F0-ADD147424925"), "linux-root-verity-ppc"),
+		(UUID("9225A9A3-3C19-4D89-B4F6-EEFF88F17631"), "linux-root-verity-ppc64"),
+		(UUID("906BD944-4589-4AAE-A4E4-DD983917446A"), "linux-root-verity-ppc64le"),
+		(UUID("AE0253BE-1167-4007-AC68-43926C14C5DE"), "linux-root-verity-riscv32"),
+		(UUID("B6ED5582-440B-4209-B8DA-5FF7C419EA3D"), "linux-root-verity-riscv64"),
+		(UUID("7AC63B47-B25C-463B-8DF8-B4A94E6C90E1"), "linux-root-verity-s390"),
+		(UUID("B325BFBE-C7BE-4AB8-8357-139E652D2F6B"), "linux-root-verity-s390x"),
+		(UUID("966061EC-28E4-4B2E-B4A5-1F0A825A1D84"), "linux-root-verity-tilegx"),
+		(UUID("8F461B0D-14EE-4E81-9AA9-049B6FB97ABD"), "linux-usr-verity-x86"),
+		(UUID("77FF5F63-E7B6-4633-ACF4-1565B864C0E6"), "linux-usr-verity-x86-64"),
+		(UUID("8CCE0D25-C0D0-4A44-BD87-46331BF1DF67"), "linux-usr-verity-alpha"),
+		(UUID("FCA0598C-D880-4591-8C16-4EDA05C7347C"), "linux-usr-verity-arc"),
+		(UUID("C215D751-7BCD-4649-BE90-6627490A4C05"), "linux-usr-verity-arm"),
+		(UUID("6E11A4E7-FBCA-4DED-B9E9-E1A512BB664E"), "linux-usr-verity-arm64"),
+		(UUID("6A491E03-3BE7-4545-8E38-83320E0EA880"), "linux-usr-verity-ia64"),
+		(UUID("F46B2C26-59AE-48F0-9106-C50ED47F673D"), "linux-usr-verity-loongarch64"),
+		(UUID("46B98D8D-B55C-4E8F-AAB3-37FCA7F80752"), "linux-usr-verity-mips32le"),
+		(UUID("3C3D61FE-B5F3-414D-BB71-8739A694A4EF"), "linux-usr-verity-mips64le"),
+		(UUID("5843D618-EC37-48D7-9F12-CEA8E08768B2"), "linux-usr-verity-hppa"),
+		(UUID("DF765D00-270E-49E5-BC75-F47BB2118B09"), "linux-usr-verity-ppc"),
+		(UUID("BDB528A5-A259-475F-A87D-DA53FA736A07"), "linux-usr-verity-ppc64"),
+		(UUID("EE2B9983-21E8-4153-86D9-B6901A54D1CE"), "linux-usr-verity-ppc64le"),
+		(UUID("CB1EE4E3-8CD0-4136-A0A4-AA61A32E8730"), "linux-usr-verity-riscv32"),
+		(UUID("8F1056BE-9B05-47C4-81D6-BE53128E5B54"), "linux-usr-verity-riscv64"),
+		(UUID("B663C618-E7BC-4D6D-90AA-11B756BB1797"), "linux-usr-verity-s390"),
+		(UUID("31741CC4-1A2A-4111-A581-E00B447D2D06"), "linux-usr-verity-s390x"),
+		(UUID("2FB4BF56-07FA-42DA-8132-6B139F2026AE"), "linux-usr-verity-tilegx"),
+		(UUID("5996FC05-109C-48DE-808B-23FA0830B676"), "linux-root-verity-sign-x86"),
+		(UUID("41092B05-9FC8-4523-994F-2DEF0408B176"), "linux-root-verity-sign-x86-64"),
+		(UUID("D46495B7-A053-414F-80F7-700C99921EF8"), "linux-root-verity-sign-alpha"),
+		(UUID("143A70BA-CBD3-4F06-919F-6C05683A78BC"), "linux-root-verity-sign-arc"),
+		(UUID("42B0455F-EB11-491D-98D3-56145BA9D037"), "linux-root-verity-sign-arm"),
+		(UUID("6DB69DE6-29F4-4758-A7A5-962190F00CE3"), "linux-root-verity-sign-arm64"),
+		(UUID("E98B36EE-32BA-4882-9B12-0CE14655F46A"), "linux-root-verity-sign-ia64"),
+		(UUID("5AFB67EB-ECC8-4F85-AE8E-AC1E7C50E7D0"), "linux-root-verity-sign-loongarch64"),
+		(UUID("C919CC1F-4456-4EFF-918C-F75E94525CA5"), "linux-root-verity-sign-mips32le"),
+		(UUID("904E58EF-5C65-4A31-9C57-6AF5FC7C5DE7"), "linux-root-verity-sign-mips64le"),
+		(UUID("15DE6170-65D3-431C-916E-B0DCD8393F25"), "linux-root-verity-sign-hppa"),
+		(UUID("1B31B5AA-ADD9-463A-B2ED-BD467FC857E7"), "linux-root-verity-sign-ppc"),
+		(UUID("F5E2C20C-45B2-4FFA-BCE9-2A60737E1AAF"), "linux-root-verity-sign-ppc64"),
+		(UUID("D4A236E7-E873-4C07-BF1D-BF6CF7F1C3C6"), "linux-root-verity-sign-ppc64le"),
+		(UUID("3A112A75-8729-4380-B4CF-764D79934448"), "linux-root-verity-sign-riscv32"),
+		(UUID("EFE0F087-EA8D-4469-821A-4C2A96A8386A"), "linux-root-verity-sign-riscv64"),
+		(UUID("3482388E-4254-435A-A241-766A065F9960"), "linux-root-verity-sign-s390"),
+		(UUID("C80187A5-73A3-491A-901A-017C3FA953E9"), "linux-root-verity-sign-s390x"),
+		(UUID("B3671439-97B0-4A53-90F7-2D5A8F3AD47B"), "linux-root-verity-sign-tilegx"),
+		(UUID("974A71C0-DE41-43C3-BE5D-5C5CCD1AD2C0"), "linux-usr-verity-sign-x86"),
+		(UUID("E7BB33FB-06CF-4E81-8273-E543B413E2E2"), "linux-usr-verity-sign-x86-64"),
+		(UUID("5C6E1C76-076A-457A-A0FE-F3B4CD21CE6E"), "linux-usr-verity-sign-alpha"),
+		(UUID("94F9A9A1-9971-427A-A400-50CB297F0F35"), "linux-usr-verity-sign-arc"),
+		(UUID("D7FF812F-37D1-4902-A810-D76BA57B975A"), "linux-usr-verity-sign-arm"),
+		(UUID("C23CE4FF-44BD-4B00-B2D4-B41B3419E02A"), "linux-usr-verity-sign-arm64"),
+		(UUID("8DE58BC2-2A43-460D-B14E-A76E4A17B47F"), "linux-usr-verity-sign-ia64"),
+		(UUID("B024F315-D330-444C-8461-44BBDE524E99"), "linux-usr-verity-sign-loongarch64"),
+		(UUID("3E23CA0B-A4BC-4B4E-8087-5AB6A26AA8A9"), "linux-usr-verity-sign-mips32le"),
+		(UUID("F2C2C7EE-ADCC-4351-B5C6-EE9816B66E16"), "linux-usr-verity-sign-mips64le"),
+		(UUID("450DD7D1-3224-45EC-9CF2-A43A346D71EE"), "linux-usr-verity-sign-hppa"),
+		(UUID("7007891D-D371-4A80-86A4-5CB875B9302E"), "linux-usr-verity-sign-ppc"),
+		(UUID("0B888863-D7F8-4D9E-9766-239FCE4D58AF"), "linux-usr-verity-sign-ppc64"),
+		(UUID("C8BFBD1E-268E-4521-8BBA-BF314C399557"), "linux-usr-verity-sign-ppc64le"),
+		(UUID("C3836A13-3137-45BA-B583-B16C50FE5EB4"), "linux-usr-verity-sign-riscv32"),
+		(UUID("D2F9000A-7A18-453F-B5CD-4D32F77A7B32"), "linux-usr-verity-sign-riscv64"),
+		(UUID("17440E4F-A8D0-467F-A46E-3912AE6EF2C5"), "linux-usr-verity-sign-s390"),
+		(UUID("3F324816-667B-46AE-86EE-9B0C0C6C11B4"), "linux-usr-verity-sign-s390x"),
+		(UUID("4EDE75E2-6CCC-4CC8-B9C7-70334B087510"), "linux-usr-verity-sign-tilegx"),
+		(UUID("BC13C2FF-59E6-4262-A352-B275FD6F7172"), "linux-extended-boot"),
+		(UUID("773f91ef-66d4-49b5-bd83-d683bf40ad16"), "linux-home"),
+		(UUID("516E7CB4-6ECF-11D6-8FF8-00022D09712B"), "freebsd-data"),
+		(UUID("83BD6B9D-7F41-11DC-BE0B-001560B84F0F"), "freebsd-boot"),
+		(UUID("516E7CB5-6ECF-11D6-8FF8-00022D09712B"), "freebsd-swap"),
+		(UUID("516E7CB6-6ECF-11D6-8FF8-00022D09712B"), "freebsd-ufs"),
+		(UUID("516E7CBA-6ECF-11D6-8FF8-00022D09712B"), "freebsd-zfs"),
+		(UUID("516E7CB8-6ECF-11D6-8FF8-00022D09712B"), "freebsd-vinum"),
+		(UUID("48465300-0000-11AA-AA11-00306543ECAC"), "apple-hfs"),
+		(UUID("7C3457EF-0000-11AA-AA11-00306543ECAC"), "apple-apfs"),
+		(UUID("55465300-0000-11AA-AA11-00306543ECAC"), "apple-ufs"),
+		(UUID("52414944-0000-11AA-AA11-00306543ECAC"), "apple-raid"),
+		(UUID("52414944-5F4F-11AA-AA11-00306543ECAC"), "apple-raid-offline"),
+		(UUID("426F6F74-0000-11AA-AA11-00306543ECAC"), "apple-boot"),
+		(UUID("4C616265-6C00-11AA-AA11-00306543ECAC"), "apple-label"),
+		(UUID("5265636F-7665-11AA-AA11-00306543ECAC"), "apple-tv-recovery"),
+		(UUID("53746F72-6167-11AA-AA11-00306543ECAC"), "apple-core-storage"),
+		(UUID("69646961-6700-11AA-AA11-00306543ECAC"), "apple-silicon-boot"),
+		(UUID("52637672-7900-11AA-AA11-00306543ECAC"), "apple-silicon-recovery"),
+		(UUID("6A82CB45-1DD2-11B2-99A6-080020736631"), "solaris-boot"),
+		(UUID("6A85CF4D-1DD2-11B2-99A6-080020736631"), "solaris-root"),
+		(UUID("6A898CC3-1DD2-11B2-99A6-080020736631"), "solaris-usr"),
+		(UUID("6A87C46F-1DD2-11B2-99A6-080020736631"), "solaris-swap"),
+		(UUID("6A8B642B-1DD2-11B2-99A6-080020736631"), "solaris-backup"),
+		(UUID("6A8EF2E9-1DD2-11B2-99A6-080020736631"), "solaris-var"),
+		(UUID("6A90BA39-1DD2-11B2-99A6-080020736631"), "solaris-home"),
+		(UUID("49F48D32-B10E-11DC-B99B-0019D1879648"), "netbsd-swap"),
+		(UUID("49F48D5A-B10E-11DC-B99B-0019D1879648"), "netbsd-ffs"),
+		(UUID("49F48D82-B10E-11DC-B99B-0019D1879648"), "netbsd-lfs"),
+		(UUID("2DB519C4-B10F-11DC-B99B-0019D1879648"), "netbsd-concatenated"),
+		(UUID("2DB519EC-B10F-11DC-B99B-0019D1879648"), "netbsd-encrypted"),
+		(UUID("49F48DAA-B10E-11DC-B99B-0019D1879648"), "netbsd-raid"),
+		(UUID("FE3A2A5D-4F32-41A7-B725-ACCC3285A309"), "chromeos-kernel"),
+		(UUID("3CB8E202-3B7E-47DD-8A3C-7FF2A13CFCEC"), "chromeos-rootfs"),
+		(UUID("2E0A753D-9E48-43B0-8337-B15192CB1B5E"), "chromeos-reserved"),
+		(UUID("CAB6E88E-ABF3-4102-A07A-D4BB9BE3C1D3"), "chromeos-firmware"),
+		(UUID("09845860-705F-4BB5-B16C-8A8A099CAF52"), "chromeos-minios"),
+		(UUID("3F0F8318-F146-4E6B-8222-C28C8F02E0D5"), "chromeos-hibernate"),
+		(UUID("45B0969E-9B03-4F30-B4C6-B4B80CEFF106"), "ceph-journal"),
+		(UUID("45B0969E-9B03-4F30-B4C6-5EC00CEFF106"), "ceph-encrypted-journal"),
+		(UUID("4FBD7E29-9D25-41B8-AFD0-062C0CEFF05D"), "ceph-osd"),
+		(UUID("4FBD7E29-9D25-41B8-AFD0-5EC00CEFF05D"), "ceph-crypt-osd"),
+		(UUID("AA31E02A-400F-11DB-9590-000C2911D1B8"), "vmware-vmfs"),
+		(UUID("9D275380-40AD-11DB-BF97-000C2911D1B8"), "vmware-diagnostic"),
+		(UUID("381CFCCC-7288-11E0-92EE-000C2911D0B2"), "vmware-vsan"),
+		(UUID("77719A0C-A4A0-11E3-A47E-000C29745A24"), "vmware-virsto"),
+		(UUID("9198EFFC-31C0-11DB-8F78-000C2911D1B8"), "vmware-reserved"),
+		(UUID("824CC7A0-36A8-11E3-890A-952519AD3F61"), "openbsd-data"),
+		(UUID("3DE21764-95BD-54BD-A5C3-4ABE786F38A8"), "uboot-env"),
+	]

builder/disk/layout/gpt/uefi.py

@@ -0,0 +1,118 @@
+import ctypes
+from binascii import crc32
+from logging import getLogger
+from builder.lib.serializable import Serializable, SerializableDict
+from uuid import UUID, uuid4
+log = getLogger(__name__)
+
+
+class EfiTableHeader(ctypes.Structure, SerializableDict):
+	_fields_ = [
+		("signature",    ctypes.c_uint64),
+		("revision",     ctypes.c_uint32),
+		("header_size",  ctypes.c_uint32),
+		("crc32",        ctypes.c_uint32),
+		("reserved",     ctypes.c_uint32),
+	]
+
+	def set_signature(self, value: str | int | bytes):
+		vt = type(value)
+		if vt is str: r = int.from_bytes(value.encode(), "little")
+		elif vt is bytes: r = int.from_bytes(value, "little")
+		elif vt is int: r = value
+		else: raise TypeError("bad value type")
+		self.signature = r
+
+	def get_signature(self) -> bytes:
+		return ctypes.string_at(ctypes.byref(self), 8)
+
+	def get_revision(self) -> tuple[int, int]:
+		return (
+			self.revision >> 0x10 & 0xFFFF,
+			self.revision & 0xFFFF,
+		)
+
+	def calc_crc32(self, data: bytes = None) -> int:
+		orig = self.crc32
+		self.crc32 = 0
+		if data is None: data = ctypes.string_at(
+			ctypes.byref(self), self.header_size
+		)
+		value = crc32(data, 0)
+		self.crc32 = orig
+		return value
+
+	def update_crc32(self, data: bytes = None):
+		self.crc32 = self.calc_crc32(data)
+
+	def check_signature(self, value: str | int | bytes) -> bool:
+		vt = type(value)
+		if vt is int: return self.signature == value
+		b = self.get_signature()
+		if vt is bytes: return b == value
+		if vt is str: return b == value.encode()
+		raise TypeError("bad value type")
+
+	def check_revision(self, major: int, minor: int) -> bool:
+		rev = self.get_revision()
+		return rev[0] == major and rev[1] == minor
+
+	def check_crc32(self) -> bool:
+		return self.calc_crc32() == self.crc32
+
+	def to_dict(self) -> dict:
+		return {
+			"signature": self.get_signature().decode(),
+			"revision": ".".join(map(str, self.get_revision())),
+			"header_size": self.header_size,
+			"crc32": self.crc32,
+		}
+
+
+class EfiGUID(ctypes.Structure, Serializable):
+	_fields_ = [
+		("d1", ctypes.c_uint32),
+		("d2", ctypes.c_uint16),
+		("d3", ctypes.c_uint16),
+		("d4", ctypes.c_uint8 * 8),
+	]
+
+	def to_uuid(self) -> UUID:
+		u = bytes()
+		u += int.to_bytes(self.d1, 4)
+		u += int.to_bytes(self.d2, 2)
+		u += int.to_bytes(self.d3, 2)
+		u += bytes().join(int.to_bytes(i) for i in self.d4)
+		return UUID(bytes=u)
+
+	def set_uuid(self, u: UUID):
+		u = u.bytes
+		self.d1 = int.from_bytes(u[0:4])
+		self.d2 = int.from_bytes(u[4:6])
+		self.d3 = int.from_bytes(u[6:8])
+		for i in range(8):
+			self.d4[i] = int.from_bytes(u[i+8:i+9])
+
+	@staticmethod
+	def from_uuid(u: UUID):
+		if u is None: return None
+		g = EfiGUID()
+		g.set_uuid(u)
+		return g
+
+	@staticmethod
+	def generate():
+		return EfiGUID.from_uuid(uuid4())
+
+	def serialize(self) -> str:
+		return str(self.to_uuid())
+
+	def unserialize(self, o: str):
+		self.from_uuid(UUID(o))
+
+	def __str__(self) -> str:
+		return self.serialize()
+
+
+assert(ctypes.sizeof(EfiTableHeader()) == 24)
+assert(ctypes.sizeof(EfiGUID()) == 16)

builder/disk/layout/ioctl.py

@@ -0,0 +1,18 @@
+import ctypes
+
+
+BLKSSZGET = 0x1268
+BLKGETSIZE64 = 0x80081272
+HDIO_GETGEO = 0x0301
+
+
+class HDGeometry(ctypes.Structure):
+	_fields_ = [
+		("heads",      ctypes.c_ubyte),
+		("sectors",    ctypes.c_ubyte),
+		("cylinders",  ctypes.c_ushort),
+		("start",      ctypes.c_ulong),
+	]
+
+
+assert(ctypes.sizeof(HDGeometry()) == 16)

builder/disk/layout/layout.py

@@ -0,0 +1,140 @@
+from math import ceil
+from io import RawIOBase
+from logging import getLogger
+from builder.lib.utils import size_to_bytes
+from builder.lib.serializable import SerializableDict
+from builder.lib.area import Area
+from builder.disk.layout.dio import DiskIO
+from builder.disk.layout.area import DiskArea
+from builder.disk.layout.part import DiskPart
+log = getLogger(__name__)
+
+
+class DiskLayout(DiskIO, DiskArea, SerializableDict):
+	partitions: list[DiskPart]
+	loaded: bool
+
+	@property
+	def id(self) -> str: pass
+
+	@id.setter
+	def id(self, val: str): pass
+
+	def create(self): pass
+
+	def reload(self): pass
+
+	def unload(self): pass
+
+	def save(self): pass
+
+	def set_from(self, config: dict): pass
+
+	def size_to_bytes(self, value: str | int, alt_units: dict = None) -> int:
+		units = {
+			"s": self.sector,
+			"sector": self.sector,
+			"sectors": self.sector
+		}
+		if alt_units:
+			units.update(alt_units)
+		return size_to_bytes(value, units)
+
+	def size_to_sectors(self, value: str | int, alt_units: dict = None) -> int:
+		ret = self.size_to_bytes(value, alt_units)
+		return ceil(ret / self.sector)
+
+	def _parse_area(self, config: dict) -> Area:
+		start, end, size = -1, -1, -1
+		if "start" in config: start = self.size_to_sectors(config["start"])
+		if "offset" in config: start = self.size_to_sectors(config["offset"])
+		if "end" in config: end = self.size_to_sectors(config["end"])
+		if "size" in config: size = self.size_to_sectors(config["size"])
+		if "length" in config: size = self.size_to_sectors(config["length"])
+		if "start_lba" in config: start = config["start_lba"]
+		if "offset_lba" in config: start = config["offset_lba"]
+		if "end_lba" in config: end = config["end_lba"]
+		if "size_lba" in config: size = config["size_lba"]
+		if "length_lba" in config: size = config["length_lba"]
+		return Area(start, end, size)
+
+	def parse_area(self, config: dict) -> Area:
+		area = self._parse_area(config)
+		area.fixup()
+		return area
+
+	def parse_free_area(self, config: dict) -> Area:
+		return self.find_free_area(area=self._parse_area(config))
+
+	def resort_partitions(self):
+		self.partitions.sort(key=lambda p: p.start_lba)
+		idx = 0
+		for part in self.partitions:
+			part.idx = idx
+			idx += 1
+
+	def add_partition_from(self, config: dict) -> DiskPart:
+		area = self.parse_free_area(config)
+		if area is None: raise ValueError("no free area found")
+		ptype = config["ptype"] if "ptype" in config else "linux"
+		return self.add_partition(ptype, area=area)
+
+	def del_partition(self, part: DiskPart):
+		if part not in self.partitions:
+			if part.layout == self:
+				raise ValueError("removed partition")
+			raise KeyError("partition not found")
+		self.partitions.remove(part)
+
+	def add_partition(
+		self,
+		ptype: str = None,
+		start: int = -1,
+		end: int = -1,
+		size: int = -1,
+		area: Area = None,
+	) -> DiskPart: pass
+
+	def __init__(
+		self,
+		fp: RawIOBase = None,
+		path: str = None,
+		sector: int = 512
+	):
+		DiskIO.__init__(self)
+		self.partitions = []
+		self.loaded = False
+		self._sector = sector
+		if sector < self._min_sector:
+			raise ValueError("bad sector size")
+		if fp: self._fp = fp
+		elif path:
+			self._fp = open(path, "wb+")
+			self._opened = True
+		else: raise ValueError("no I/O interface")
+
+	def __del__(self):
+		if self._opened: self._fp.close()
+
+	def __len__(self) -> int:
+		return len(self.partitions)
+
+	def __setitem__(self, key: int, value: DiskPart):
+		self.resort_partitions()
+		self.partitions[key] = value
+
+	def __getitem__(self, key: int) -> DiskPart:
+		self.resort_partitions()
+		return self.partitions[key]
+
+	def __delitem__(self, key: int):
+		self.resort_partitions()
+		self.del_partition(self.partitions[key])
+		self.resort_partitions()
+
+	def __iadd__(self, value: DiskPart) -> DiskPart:
+		self.resort_partitions()
+		value.idx = len(self.partitions)
+		self.partitions += value
+		self.resort_partitions()
+		return value

builder/disk/layout/mbr/layout.py

@@ -0,0 +1,270 @@
+from os import urandom
+from io import RawIOBase
+from logging import getLogger
+from builder.lib.area import Area, Areas
+from builder.disk.layout.layout import DiskLayout
+from builder.disk.layout.mbr.types import DiskTypesMBR
+from builder.disk.layout.mbr.struct import MasterBootRecord, MbrPartEntry
+from builder.disk.layout.mbr.part import DiskPartMBR
+log = getLogger(__name__)
+
+
+class DiskLayoutMBR(DiskLayout):
+	boot_code: bytes
+	mbr_id: int
+	partitions: list[DiskPartMBR]
+
+	@property
+	def id(self) -> str:
+		return f"{self.mbr_id:08x}"
+
+	@id.setter
+	def id(self, val: str):
+		self.mbr_id = int(val, base=16)
+
+	def del_partition(self, part: DiskPartMBR):
+		DiskLayout.del_partition(self, part)
+		if DiskTypesMBR.equal(part, "extended") and not part.logical:
+			parts = [p for p in self.partitions if p.extend == part]
+			for p in parts: self.del_partition(p)
+
+	def add_partition(
+		self,
+		ptype: int | str = None,
+		start: int = -1,
+		end: int = -1,
+		size: int = -1,
+		area: Area = None,
+		logical: bool | None = None,
+	) -> DiskPartMBR | None:
+		area = self.find_free_area(start, end, size, area)
+		if area is None: return None
+		if ptype is None: ptype = "linux"
+		extend: DiskPartMBR | None = None
+		ps = self.partitions
+		tid = DiskTypesMBR.lookup_one_id("extended")
+		primary: list[DiskPartMBR] = [p for p in ps if not p.logical]
+		extended: list[DiskPartMBR] = [p for p in ps if p.type_id == tid]
+		if logical is None: logical = len(primary) >= 4
+		if logical:
+			if extended is None: raise RuntimeError("no extended table")
+			if DiskTypesMBR.equal(ptype, "extended"):
+				raise ValueError("attempt add extended table as logical")
+			extend = next((e.to_area().is_area_in(area) for e in extended), None)
+			if extend is None: raise ValueError(
+				"logical partition out of extended table"
+			)
+		elif len(primary) >= 4:
+			raise ValueError("no space for primary partition")
+		self.resort_partitions()
+		idx = len(self.partitions)
+		item = MbrPartEntry()
+		item.set_start_lba(area.start)
+		item.set_size_lba(area.end)
+		item.set_type(ptype)
+		part = DiskPartMBR(self, item, idx)
+		if logical: part.extend = extend
+		self.partitions.insert(idx, part)
+		pl = "logical" if logical else "primary"
+		log.debug(
+			f"Added {pl} partition {idx} "
+			f"start LBA {area.start} "
+			f"end LBA {area.end} "
+			f"type {ptype}"
+		)
+		return part
+
+	def add_partition_from(self, config: dict) -> DiskPartMBR:
+		area = self.parse_free_area(config)
+		if area is None: raise ValueError("no free area found")
+		ptype = config["ptype"] if "ptype" in config else None
+		logical = config["logical"] if "logical" in config else None
+		part = self.add_partition(ptype, area=area, logical=logical)
+		if part:
+			if "bootable" in config:
+				part.bootable = config["bootable"]
+		return part
+
+	def get_usable_area(self) -> Area | None:
+		if self.total_lba <= 2: return None
+		end = self.total_lba - 1
+		start = min(self.align_lba, end)
+		return Area(start=start, end=end).fixup()
+
+	def get_used_areas(self, table=False) -> Areas:
+		areas = Areas()
+		if table: areas.add(start=1, size=1)
+		for part in self.partitions:
+			if part.size_lba <= 0: continue
+			start, size = part.start_lba, part.size_lba
+			if part.logical and table: size += 1
+			if DiskTypesMBR.equal(part, "extended"):
+				if not table: continue
+				size = 1
+			areas.add(start=start, size=size)
+		areas.merge()
+		return areas
+
+	def get_free_areas(self) -> Areas:
+		areas = Areas()
+		usable = self.get_usable_area()
+		if usable is None: return areas
+		areas.add(area=usable)
+		for part in self.partitions:
+			start = part.start_lba
+			end = part.end_lba
+			size = part.size_lba
+			if DiskTypesMBR.equal(part, "extended"):
+				end = -1
+				size = 1
+			elif part.logical:
+				end += 1
+				size += 1
+			areas.splice(start, end, size)
+		areas.align(self.align_lba)
+		return areas
+
+	def create_mbr(self) -> MasterBootRecord:
+		new_mbr = MasterBootRecord()
+		new_mbr.fill_header()
+		if self.boot_code:
+			new_mbr.boot_code = self.boot_code
+		new_mbr.mbr_id = self.mbr_id
+		idx = 0
+		for part in self.partitions:
+			if part.logical: continue
+			if idx >= 4: raise RuntimeError("too many primary partitions")
+			new_mbr.partitions[idx] = part.to_entry()
+			idx += 1
+		return new_mbr
+
+	def try_load_mbr(self) -> MasterBootRecord | None:
+		mbr_data = self.read_lba(0)
+		mbr = MasterBootRecord.from_buffer_copy(mbr_data)
+		if not mbr.check_signature():
+			log.debug("Bad MBR")
+			return None
+		self.mbr_id = mbr.mbr_id
+		self.boot_code = mbr.boot_code
+		log.debug(f"Found MBR id {self.id}")
+		return mbr
+
+	def try_load_mbr_extended_entries(self, ext: DiskPartMBR) -> list[DiskPartMBR] | None:
+		extends: list[DiskPartMBR] = []
+		ebr_data = self.read_lba(ext.start_lba)
+		ebr = MasterBootRecord.from_buffer_copy(ebr_data)
+		if not ebr.check_signature():
+			if ebr.signature == 0:
+				log.debug("Empty EBR")
+				return extends
+			log.debug("Bad EBR")
+			return None
+		for item in ebr.partitions:
+			idx = len(self.partitions)
+			part = DiskPartMBR(self, item, idx)
+			if part.size_lba == 0: continue
+			part.extend = ext.get_root_ebr()
+			part.logical = True
+			if DiskTypesMBR.equal(part.type_id, "extended"):
+				part.start_lba += part.extend.start_lba
+				extends.append(part)
+			else:
+				part.start_lba += ext.start_lba
+				self.partitions.insert(idx, part)
+			log.debug(
+				f"Found logical partition {idx} "
+				f"start LBA {part.start_lba} "
+				f"end LBA {part.end_lba} "
+				f"type {part.type}"
+			)
+		return extends
+
+	def try_load_mbr_entries(self, mbr: MasterBootRecord) -> bool:
+		ret = True
+		nested: list[DiskPartMBR] = []
+		extends: list[DiskPartMBR] = []
+		self.partitions.clear()
+		log.debug("Try loading MBR primary partitions")
+		for item in mbr.partitions:
+			if item.size_lba == 0: continue
+			idx = len(self.partitions)
+			part = DiskPartMBR(self, item, idx)
+			if DiskTypesMBR.equal(part.type_id, "extended"):
+				extends.append(part)
+			self.partitions.insert(idx, part)
+			log.debug(
+				f"Found primary partition {idx} "
+				f"start LBA {part.start_lba} "
+				f"end LBA {part.end_lba} "
+				f"type {part.type}"
+			)
+		while len(extends) > 0:
+			for extend in extends:
+				log.debug(
+					"Try loading MBR logical partitions from "
+					f"LBA {extend.start_lba}"
+				)
+				ne = self.try_load_mbr_extended_entries(extend)
+				if ne is None: ret = False
+				else: nested.extend(ne)
+			extends = nested
+			nested = []
+		cnt = len(self.partitions)
+		if ret: log.debug(f"Found {cnt} partitions")
+		return ret
+
+	def create_ebr_chains(self) -> dict:
+		pass
+
+	def load_header(self) -> bool:
+		self.unload()
+		mbr = self.try_load_mbr()
+		if mbr is None: return False
+		if not self.try_load_mbr_entries(mbr): return False
+		self.loaded = True
+		return True
+
+	def unload(self):
+		self.loaded = False
+		self.mbr_id = 0
+		self.boot_code = bytes()
+		self.partitions.clear()
+
+	def reload(self):
+		if self.load_header(): return
+		raise IOError("Load MBR header failed")
+
+	def save(self):
+		pass
+
+	def create(self):
+		self.unload()
+		self.mbr_id = int.from_bytes(urandom(4))
+
+	def set_from(self, config: dict):
+		if "id" in config: self.mbr_id = int(config["id"])
+
+	def to_dict(self) -> dict:
+		return {
+			"id": self.id,
+			"mbr_id": self.mbr_id,
+			"sector": self.sector,
+			"sectors": self.total_lba,
+			"size": self.total_size,
+			"free": self.get_free_size(),
+			"partitions": self.partitions,
+			"usable_area": self.get_usable_area(),
+			"free_area": self.get_free_areas(),
+		}
+
+	def __init__(
+		self,
+		fp: RawIOBase = None,
+		path: str = None,
+		sector: int = 512
+	):
+		super().__init__(fp=fp, path=path, sector=sector)
+		self.partitions = []
+		self.mbr_id = 0
+		self.boot_code = bytes()
+		self.load_header()

builder/disk/layout/mbr/part.py

@@ -0,0 +1,117 @@
+from logging import getLogger
+from typing import Self
+from builder.disk.layout.layout import DiskLayout, DiskPart
+from builder.disk.layout.mbr.struct import MbrPartEntry
+from builder.disk.layout.mbr.types import DiskTypesMBR
+log = getLogger(__name__)
+
+
+class DiskPartMBR(DiskPart):
+	layout: DiskLayout
+	boot_indicator: int
+	os_indicator: int
+	idx: int
+	logical: bool
+	extend: Self
+	_start_lba: int
+	_size_lba: int
+
+	def get_root_ebr(self) -> Self:
+		ebr = self
+		while ebr.logical:
+			ebr = ebr.extend
+		return ebr
+
+	@property
+	def bootable(self) -> bool:
+		return self.boot_indicator == 0x80
+
+	@bootable.setter
+	def bootable(self, bootable: bool):
+		self.boot_indicator = 0x80 if bootable else 0
+
+	@property
+	def id(self) -> str:
+		return f"{self.layout.id}-{self.idx+1}"
+
+	@id.setter
+	def id(self, val: str):
+		raise NotImplementedError("cannot change id of mbr part")
+
+	@property
+	def type_id(self) -> int:
+		return self.os_indicator
+
+	@type_id.setter
+	def type_id(self, tid: int):
+		self.type = tid
+
+	@property
+	def type(self) -> str:
+		return DiskTypesMBR.lookup_one_name(self.os_indicator)
+
+	@type.setter
+	def type(self, tid: str):
+		g = DiskTypesMBR.lookup_one_id(tid)
+		if g is None: raise ValueError(f"bad type {tid}")
+		self.os_indicator = g
+
+	@property
+	def start_lba(self) -> int: return self._start_lba
+
+	@start_lba.setter
+	def start_lba(self, start_lba: int): self._start_lba = start_lba
+
+	@property
+	def size_lba(self) -> int: return self._size_lba
+
+	@size_lba.setter
+	def size_lba(self, size_lba: int): self._size_lba = size_lba
+
+	@property
+	def end_lba(self) -> int:
+		return self.size_lba + self.start_lba - 1
+
+	@end_lba.setter
+	def end_lba(self, end_lba: int):
+		self.size_lba = end_lba - self.start_lba + 1
+
+	def load_entry(self, part: MbrPartEntry):
+		self.start_lba = part.start_lba
+		self.size_lba = part.size_lba
+		self.boot_indicator = part.boot_indicator
+		self.os_indicator = part.os_indicator
+
+	def to_entry(self) -> MbrPartEntry:
+		part = MbrPartEntry()
+		part.start_lba = self.start_lba
+		part.size_lba = self.size_lba
+		part.boot_indicator = self.boot_indicator
+		part.os_indicator = self.os_indicator
+		return part
+
+	def __init__(self, layout: DiskLayout, part: MbrPartEntry, idx: int):
+		super().__init__()
+		self.layout = layout
+		self.idx = idx
+		self.start_lba = 0
+		self.size_lba = 0
+		self.boot_indicator = 0
+		self.os_indicator = 0
+		self.logical = False
+		self.extend = None
+		if part: self.load_entry(part)
+		from builder.disk.layout.mbr.layout import DiskLayoutMBR
+		if not isinstance(layout, DiskLayoutMBR):
+			raise TypeError("require DiskLayoutGPT")
+
+	def to_dict(self) -> dict:
+		return {
+			"logical": self.logical,
+			"bootable": self.bootable,
+			"type_id": self.type_id,
+			"type_name": self.type,
+			"start_lba": self.start_lba,
+			"end_lba": self.end_lba,
+			"size_lba": self.size_lba,
+		}

builder/disk/layout/mbr/struct.py

@@ -0,0 +1,106 @@
+import ctypes
+from logging import getLogger
+from builder.lib.serializable import SerializableDict
+from builder.disk.layout.mbr.types import DiskTypesMBR
+log = getLogger(__name__)
+
+
+class MbrPartEntry(ctypes.Structure, SerializableDict):
+	_fields_ = [
+		("boot_indicator",  ctypes.c_uint8),
+		("start_head",      ctypes.c_uint8),
+		("start_sector",    ctypes.c_uint8),
+		("start_track",     ctypes.c_uint8),
+		("os_indicator",    ctypes.c_uint8),
+		("end_head",        ctypes.c_uint8),
+		("end_sector",      ctypes.c_uint8),
+		("end_track",       ctypes.c_uint8),
+		("start_lba",       ctypes.c_uint32),
+		("size_lba",        ctypes.c_uint32),
+	]
+	heads: int=255
+	sectors: int=63
+
+	def is_bootable(self) -> bool:
+		return self.boot_indicator == 0x80
+
+	def set_bootable(self, bootable: bool):
+		self.boot_indicator = 0x80 if bootable else 0
+
+	def get_type_name(self) -> str:
+		return DiskTypesMBR.lookup_one_name(self.os_indicator)
+
+	def get_type_id(self) -> int:
+		return DiskTypesMBR.lookup_one_id(self.os_indicator)
+
+	def set_type(self, t: int|str):
+		g = DiskTypesMBR.lookup_one_id(t)
+		if g is None: raise ValueError(f"bad type {t}")
+		self.os_indicator = g
+
+	def set_start_lba(self, start_lba: int):
+		c, h, s = lba_to_chs(start_lba, self.sectors, self.heads)
+		self.start_head = h
+		self.start_sector = s
+		self.start_track = c
+		self.start_lba = start_lba
+
+	def set_end_lba(self, end_lba: int):
+		c, h, s = lba_to_chs(end_lba, self.sectors, self.heads)
+		self.end_head = h
+		self.end_sector = s
+		self.end_track = c
+		self.size_lba = end_lba - self.start_lba + 1
+
+	def set_size_lba(self, size_lba: int):
+		end_lba = size_lba + self.start_lba - 1
+		c, h, s = lba_to_chs(end_lba, self.sectors, self.heads)
+		self.end_head = h
+		self.end_sector = s
+		self.end_track = c
+		self.size_lba = size_lba
+
+	def to_dict(self) -> dict:
+		ret = {field[0]: getattr(self, field[0]) for field in self._fields_}
+		ret["bootable"] = self.is_bootable()
+		ret["type_id"] = self.get_type_id()
+		ret["type_name"] = self.get_type_name()
+		return ret
+
+
+class MasterBootRecord(ctypes.Structure, SerializableDict):
+	_pack_ = 1
+	_fields_ = [
+		("boot_code",   ctypes.c_byte * 440),
+		("mbr_id",      ctypes.c_uint32),
+		("reserved",    ctypes.c_uint16),
+		("partitions",  MbrPartEntry * 4),
+		("signature",   ctypes.c_uint16),
+	]
+	MBR_SIGNATURE: int = 0xaa55
+
+	def fill_header(self):
+		self.signature = self.MBR_SIGNATURE
+
+	def check_signature(self) -> bool:
+		return self.signature == self.MBR_SIGNATURE
+
+	def to_dict(self) -> dict:
+		parts = [part for part in self.partitions if part.os_indicator != 0]
+		return {
+			"mbr_id": f"{self.mbr_id:08x}",
+			"partitions": parts,
+			"signature": self.signature,
+		}
+
+
+assert(ctypes.sizeof(MbrPartEntry()) == 16)
+assert(ctypes.sizeof(MasterBootRecord()) == 512)
+
+
+def lba_to_chs(lba: int, sectors: int = 63, heads: int = 255):
+	lba += 1
+	sector = lba % sectors
+	head = (lba // sectors) % heads
+	cylinder = lba // (sectors * heads)
+	return cylinder, head, sector

builder/disk/layout/mbr/types.py

@@ -0,0 +1,82 @@
+from logging import getLogger
+from builder.disk.layout.types import DiskTypes
+log = getLogger(__name__)
+
+
+class DiskTypesMBR(DiskTypes):
+	@staticmethod
+	def lookup(t) -> list[tuple[int, str]]:
+		ret: list[tuple[int, str]] = []
+		ts = DiskTypesMBR.types
+		from builder.disk.layout.mbr.struct import MbrPartEntry
+		from builder.disk.layout.mbr.part import DiskPartMBR
+		if isinstance(t, DiskPartMBR):
+			u = t.type_id
+		elif isinstance(t, MbrPartEntry):
+			u = int(t.os_indicator)
+		elif type(t) is int:
+			u = t
+		elif type(t) is str:
+			ret = [tn for tn in ts if tn[1] == t]
+			if len(ret) > 0: return ret
+			try: u = int(t)
+			except: return ret
+		else: return ret
+		return [tn for tn in ts if tn[0] == u]
+
+	def lookup_one(t) -> tuple[int, str]:
+		l = DiskTypesMBR.lookup(t)
+		return l[0] if len(l) > 0 else None
+
+	@staticmethod
+	def lookup_one_id(t) -> int:
+		r = DiskTypesMBR.lookup_one(t)
+		return r[0] if r else 0
+
+	@staticmethod
+	def lookup_one_name(t) -> str:
+		r = DiskTypesMBR.lookup_one(t)
+		return r[1] if r else None
+
+	@staticmethod
+	def lookup_names(t) -> list[str]:
+		r = DiskTypesMBR.lookup(t)
+		return [t[1] for t in r]
+
+	@staticmethod
+	def equal(l, r) -> bool:
+		lf = DiskTypesMBR.lookup_one_id(l)
+		rf = DiskTypesMBR.lookup_one_id(r)
+		if lf == 0 or rf == 0: return False
+		return lf == rf
+
+	types: list[tuple[int, str]] = [
+		(0x01, "fat12"),
+		(0x05, "extended"),
+		(0x06, "fat16"),
+		(0x07, "ntfs"),
+		(0x07, "exfat"),
+		(0x07, "hpfs"),
+		(0x0b, "fat32"),
+		(0x16, "hidden-fat16"),
+		(0x17, "hidden-ntfs"),
+		(0x17, "hidden-exfat"),
+		(0x17, "hidden-hpfs"),
+		(0x1b, "hidden-fat32"),
+		(0x81, "minix"),
+		(0x82, "linux-swap"),
+		(0x83, "linux"),
+		(0x85, "linux-extended"),
+		(0x85, "linuxex"),
+		(0x88, "linux-plaintext"),
+		(0x8e, "linux-lvm"),
+		(0xa5, "freebsd"),
+		(0xa6, "openbsd"),
+		(0xa9, "netbsd"),
+		(0xaf, "hfs"),
+		(0xee, "gpt"),
+		(0xef, "efi"),
+		(0xef, "uefi"),
+		(0xef, "esp"),
+		(0xfd, "linux-raid"),
+	]

builder/disk/layout/part.py

@@ -0,0 +1,95 @@
+from logging import getLogger
+from builder.lib.serializable import SerializableDict
+from builder.lib.area import Area
+log = getLogger(__name__)
+
+
+class DiskPart(SerializableDict):
+	layout = None
+	idx: int
+
+	@property
+	def part_name(self) -> str: pass
+
+	@part_name.setter
+	def part_name(self, name: str): pass
+
+	@property
+	def type(self) -> str: pass
+
+	@type.setter
+	def type(self, val: str): pass
+
+	@property
+	def id(self) -> str: pass
+
+	@id.setter
+	def id(self, val: str): pass
+
+	@property
+	def start_lba(self) -> int: pass
+
+	@start_lba.setter
+	def start_lba(self, start_lba: int): pass
+
+	@property
+	def end_lba(self) -> int: pass
+
+	@end_lba.setter
+	def end_lba(self, end_lba: int): pass
+
+	@property
+	def size_lba(self) -> int: pass
+
+	@size_lba.setter
+	def size_lba(self, size_lba: int): pass
+
+	@property
+	def partlabel(self) -> str: pass
+
+	@property
+	def partuuid(self) -> str: pass
+
+	def to_area(self) -> Area:
+		return Area(
+			self.start_lba,
+			self.end_lba,
+			self.size_lba
+		)
+
+	def set_area(self, start: int = -1, end: int = -1, size: int = -1, area: Area = None):
+		val = Area(start, end, size, area).fixup().to_tuple()
+		self.start_lba, self.end_lba, self.size_lba = val
+
+	def delete(self):
+		self.layout.del_partition(self)
+
+	@property
+	def attributes(self) -> int: pass
+
+	@attributes.setter
+	def attributes(self, attributes: int): pass
+
+	@property
+	def start(self) -> int:
+		return self.start_lba * self.layout.sector
+
+	@start.setter
+	def start(self, start: int):
+		self.start_lba = start / self.layout.sector
+
+	@property
+	def end(self) -> int:
+		return self.end_lba * self.layout.sector
+
+	@end.setter
+	def end(self, end: int):
+		self.end_lba = end / self.layout.sector
+
+	@property
+	def size(self) -> int:
+		return self.size_lba * self.layout.sector
+
+	@size.setter
+	def size(self, size: int):
+		self.size_lba = size / self.layout.sector

builder/disk/layout/types.py

@@ -0,0 +1,33 @@
+
+class DiskTypes:
+	@staticmethod
+	def lookup(t) -> list[tuple[int, str]]:
+		pass
+
+	def lookup_one(t) -> tuple[int, str]:
+		l = DiskTypes.lookup(t)
+		return l[0] if len(l) > 0 else None
+
+	@staticmethod
+	def lookup_one_id(t) -> int:
+		r = DiskTypes.lookup_one(t)
+		return r[0] if r else None
+
+	@staticmethod
+	def lookup_one_name(t) -> str:
+		r = DiskTypes.lookup_one(t)
+		return r[1] if r else None
+
+	@staticmethod
+	def lookup_names(t) -> list[str]:
+		r = DiskTypes.lookup(t)
+		return [t[1] for t in r]
+
+	@staticmethod
+	def equal(l, r) -> bool:
+		lf = DiskTypes.lookup_one_id(l)
+		rf = DiskTypes.lookup_one_id(r)
+		if lf is None or rf is None: return False
+		return lf == rf
+
+	types: list[tuple[int, str]] = []

builder/disk/types.py

@@ -0,0 +1,9 @@
+from builder.disk.content import ImageContentBuilder
+from builder.disk.layout.build import DiskLayoutBuilder
+from builder.disk.filesystem.build import FileSystemBuilder
+
+
+types: list[tuple[str, type[ImageContentBuilder]]] = [
+	("disk",       DiskLayoutBuilder),
+	("filesystem", FileSystemBuilder),
+]

builder/lib/area.py

@@ -0,0 +1,202 @@
+from typing import Self
+from builder.lib.utils import round_up, round_down, size_to_bytes
+from builder.lib.serializable import SerializableDict, SerializableList
+
+
+class Area(SerializableDict):
+	start: int = -1
+	end: int = -1
+	size: int = -1
+
+	def set(self, start: int = -1, end: int = -1, size: int = -1) -> Self:
+		self.start, self.end, self.size = start, end, size
+		return self
+
+	def to_tuple(self) -> tuple[int, int, int]:
+		return self.start, self.end, self.size
+
+	def to_dict(self) -> dict:
+		return {
+			"start": self.start,
+			"end": self.end,
+			"size": self.size,
+		}
+
+	def reset(self) -> Self:
+		self.set(-1, -1, -1)
+		return self
+
+	def from_dict(self, o: dict) -> Self:
+		self.reset()
+		if "start" in o: self.start = size_to_bytes(o["start"])
+		if "offset" in o: self.start = size_to_bytes(o["offset"])
+		if "end" in o: self.end = size_to_bytes(o["end"])
+		if "size" in o: self.size = size_to_bytes(o["size"])
+		if "length" in o: self.size = size_to_bytes(o["length"])
+		return self
+
+	def is_area_in(self, area: Self) -> bool:
+		self.fixup()
+		area.fixup()
+		return (
+			(self.start <= area.start <= self.end) and
+			(self.start <= area.end <= self.end) and
+			(area.size <= self.size)
+		)
+
+	def fixup(self) -> Self:
+		if self.start >= 0 and self.end >= 0 and self.start > self.end + 1:
+			raise ValueError("start large than end")
+		if 0 <= self.end < self.size and self.size >= 0:
+			raise ValueError("size large than end")
+		if self.start >= 0 and self.end >= 0 and self.size >= 0:
+			if self.size != self.end - self.start + 1:
+				raise ValueError("bad size")
+		elif self.start >= 0 and self.end >= 0:
+			self.size = self.end - self.start + 1
+		elif self.start >= 0 and self.size >= 0:
+			self.end = self.start + self.size - 1
+		elif self.end >= 0 and self.size >= 0:
+			self.start = self.end - self.size + 1
+		else:
+			raise ValueError("missing value")
+		return self
+
+	def __init__(self, start: int = -1, end: int = -1, size: int = -1, area: Self = None):
+		super().__init__()
+		if area: start, end, size = area.to_tuple()
+		self.start, self.end, self.size = start, end, size
+
+
+def convert(start: int = -1, end: int = -1, size: int = -1, area: Area = None) -> Area:
+	return Area(start, end, size, area).fixup()
+
+
+def to_tuple(start: int = -1, end: int = -1, size: int = -1, area: Area = None) -> tuple[int, int, int]:
+	return convert(start, end, size, area).to_tuple()
+
+
+class Areas(list[Area], SerializableList):
+	def is_area_in(self, area: Area) -> bool:
+		return any(pool.is_area_in(area) for pool in self)
+
+	def merge(self) -> Self:
+		idx = 0
+		self.sort(key=lambda x: (x.start, x.end))
+		while len(self) > 0:
+			curr = self[idx]
+			if curr.size <= 0:
+				self.remove(curr)
+				continue
+			if idx > 0:
+				last = self[idx - 1]
+				if last.end + 1 >= curr.start:
+					ent = Area(last.start, curr.end)
+					ent.fixup()
+					self.remove(last)
+					self.remove(curr)
+					self.insert(idx - 1, ent)
+					idx -= 1
+			idx += 1
+			if idx >= len(self): break
+		return self
+
+	def lookup(
+		self,
+		start: int = -1,
+		end: int = -1,
+		size: int = -1,
+		area: Area = None,
+	) -> Area | None:
+		start, end, size = to_tuple(start, end, size, area)
+		for area in self:
+			if not (area.start <= start <= area.end): continue
+			if not (area.start <= end <= area.end): continue
+			if size > area.size: continue
+			return area
+		return None
+
+	def align(self, align: int) -> Self:
+		self.sort(key=lambda x: (x.start, x.end))
+		for area in self:
+			start = round_up(area.start, align)
+			end = round_down(area.end + 1, align) - 1
+			size = end - start + 1
+			if start >= end or size < align:
+				self.remove(area)
+			else:
+				area.set(start, end, size)
+		self.merge()
+		return self
+
+	def add(
+		self,
+		start: int = -1,
+		end: int = -1,
+		size: int = -1,
+		area: Area = None
+	) -> Area | None:
+		if area: start, end, size = area.to_tuple()
+		cnt = (start >= 0) + (end >= 0) + (size >= 0)
+		if cnt < 2: raise ValueError("missing value")
+		r = convert(start, end, size)
+		if r.size <= 0: return None
+		self.append(r)
+		return r
+
+	def splice(
+		self,
+		start: int = -1,
+		end: int = -1,
+		size: int = -1,
+		area: Area = None,
+	) -> bool:
+		start, end, size = to_tuple(start, end, size, area)
+		if len(self) <= 0: return False
+		rs = min(area.start for area in self)
+		re = max(area.end for area in self)
+		if start < rs: start = rs
+		if end > re: end = re
+		start, end, size = to_tuple(start, end)
+		target = self.lookup(start, end, size)
+		if target is None: return False
+		self.remove(target)
+		self.add(target.start, start - 1)
+		self.add(end + 1, target.end)
+		self.merge()
+		return True
+
+	def find(
+		self,
+		start: int = -1,
+		end: int = -1,
+		size: int = -1,
+		area: Area = None,
+		biggest: bool = True,
+	) -> Area | None:
+		if area: start, end, size = area.to_tuple()
+		cnt = (start >= 0) + (end >= 0) + (size >= 0)
+		if cnt >= 2:
+			area = convert(start, end, size)
+			return area if self.is_area_in(area) else None
+		use = Areas()
+		for free in self:
+			if start >= 0 and not (free.start <= start <= free.end): continue
+			if end >= 0 and not (free.start <= end <= free.end): continue
+			if size >= 0 and size > free.size: continue
+			use.add(area=free)
+		if biggest: use.sort(key=lambda x: x.size)
+		if len(use) <= 0: return None
+		target = use[0]
+		if start >= 0: target.start, target.end = start, -1
+		if end >= 0: target.start, target.end = -1, end
+		if size >= 0: target.end, target.size = -1, size
+		return target.fixup()
+
+	def to_list(self) -> list:
+		return self
+
+	def from_list(self, o: list) -> Self:
+		self.clear()
+		for i in o: self.append(Area().from_dict(i))
+		return self

builder/lib/blkid.py

@@ -0,0 +1,642 @@
+from ctypes import *
+
+
+class BlkidType:
+	blkid = None
+	ptr = POINTER(c_uint64)
+
+	@property
+	def pptr(self): return pointer(self.ptr)
+
+	def __init__(self, blkid, ptr: c_void_p=None):
+		self.blkid = blkid
+		if ptr: self.ptr = ptr
+
+
+class BlkidCache(BlkidType): pass
+class BlkidProbe(BlkidType): pass
+class BlkidDevice(BlkidType): pass
+class BlkidDeviceIterate(BlkidType): pass
+class BlkidTagIterate(BlkidType): pass
+class BlkidTopology(BlkidType): pass
+class BlkidPartList(BlkidType): pass
+class BlkidPartTable(BlkidType): pass
+class BlkidPartition(BlkidType): pass
+
+
+class Blkid:
+	obj: CDLL=None
+	BLKID_DEV_FIND   = 0x0000
+	BLKID_DEV_CREATE = 0x0001
+	BLKID_DEV_VERIFY = 0x0002
+	BLKID_DEV_NORMAL = 0x0003
+	BLKID_SUBLKS_LABEL    = (1 << 1)
+	BLKID_SUBLKS_LABELRAW = (1 << 2)
+	BLKID_SUBLKS_UUID     = (1 << 3)
+	BLKID_SUBLKS_UUIDRAW  = (1 << 4)
+	BLKID_SUBLKS_TYPE     = (1 << 5)
+	BLKID_SUBLKS_SECTYPE  = (1 << 6)
+	BLKID_SUBLKS_USAGE    = (1 << 7)
+	BLKID_SUBLKS_VERSION  = (1 << 8)
+	BLKID_SUBLKS_MAGIC    = (1 << 9)
+	BLKID_SUBLKS_BADCSUM  = (1 << 10)
+	BLKID_SUBLKS_FSINFO   = (1 << 11)
+	BLKID_SUBLKS_DEFAULT  = ((1 << 1) | (1 << 3) | (1 << 5) | (1 << 6))
+	BLKID_FLTR_NOTIN  = 1
+	BLKID_FLTR_ONLYIN = 2
+	BLKID_USAGE_FILESYSTEM = (1 << 1)
+	BLKID_USAGE_RAID       = (1 << 2)
+	BLKID_USAGE_CRYPTO     = (1 << 3)
+	BLKID_USAGE_OTHER      = (1 << 4)
+	BLKID_PARTS_FORCE_GPT     = (1 << 1)
+	BLKID_PARTS_ENTRY_DETAILS = (1 << 2)
+	BLKID_PARTS_MAGIC         = (1 << 3)
+	BLKID_PROBE_OK        = 0
+	BLKID_PROBE_NONE      = 1
+	BLKID_PROBE_ERROR     = -1
+	BLKID_PROBE_AMBIGUOUS = -2
+
+	def __init__(self):
+		self.obj = CDLL("libblkid.so.1")
+
+	def init_debug(self, mask: int) -> None:
+		self.obj.blkid_init_debug.argtypes = (c_int, )
+		self.obj.blkid_init_debug(mask)
+
+	def put_cache(self, cache: BlkidCache) -> None:
+		self.obj.blkid_put_cache(cache.ptr)
+
+	def get_cache(self, filename: str=None) -> tuple[int, BlkidCache]:
+		cache = BlkidCache(self)
+		self.obj.blkid_get_cache.argtypes = (c_void_p, c_char_p, )
+		self.obj.blkid_get_cache.restype = c_int
+		c = cache.ptr if cache else None
+		f = filename.encode() if filename else None
+		ret = self.obj.blkid_get_cache(c, f)
+		return (ret, cache)
+
+	def gc_cache(self, cache: BlkidCache) -> None:
+		self.obj.blkid_gc_cache.argtypes = (c_void_p, )
+		self.obj.blkid_gc_cache(cache.ptr)
+
+	def dev_devname(self, dev: BlkidDevice) -> str:
+		self.obj.blkid_dev_devname.argtypes = (c_void_p, )
+		self.obj.blkid_dev_devname.restype = c_char_p
+		ret = self.obj.blkid_dev_devname(dev.ptr)
+		return ret.decode() if ret else None
+
+	def dev_iterate_begin(self, cache: BlkidCache) -> BlkidDeviceIterate:
+		iter = BlkidDeviceIterate(self)
+		self.obj.blkid_dev_iterate_begin.argtypes = (c_void_p, )
+		self.obj.blkid_dev_iterate_begin.restype = c_void_p
+		iter.ptr = self.obj.blkid_dev_iterate_begin(cache.ptr)
+		return iter
+
+	def dev_set_search(self, iter: BlkidDeviceIterate, type: str=None, value: str=None) -> int:
+		self.obj.blkid_dev_set_search.argtypes = (c_void_p, c_char_p, c_char_p, )
+		self.obj.blkid_dev_set_search.restype = c_int
+		return self.obj.blkid_dev_set_search(iter, type, value)
+
+	def dev_next(self, iter: BlkidDeviceIterate) -> tuple[int, BlkidDevice]:
+		dev = BlkidDevice(self)
+		self.obj.blkid_dev_next.argtypes = (c_void_p, c_void_p, )
+		self.obj.blkid_dev_next.restype = c_int
+		ret = self.obj.blkid_dev_next(iter.ptr, dev.pptr)
+		return (ret, dev)
+
+	def dev_iterate_end(self, iter: BlkidDeviceIterate):
+		self.obj.blkid_dev_iterate_end.argtypes = (c_void_p, )
+		self.obj.blkid_dev_iterate_end(iter.ptr)
+
+	def devno_to_devname(self, devno: int) -> str:
+		self.obj.blkid_devno_to_devname.argtypes = (c_int, )
+		self.obj.blkid_devno_to_devname.restype = c_char_p
+		ret = self.obj.blkid_devno_to_devname(devno)
+		return ret.decode() if ret else None
+
+	def devno_to_wholedisk(self, dev: int, diskname: str, len: int) -> tuple[int, int]:
+		diskdevno = c_uint64(0)
+		ptr = pointer(diskdevno)
+		self.obj.blkid_devno_to_wholedisk.argtypes = (c_int, c_char_p, POINTER(c_int), )
+		self.obj.blkid_devno_to_wholedisk.restype = c_int
+		d = diskname.encode() if diskname else None
+		ret = self.obj.blkid_devno_to_wholedisk(dev, d, len, ptr)
+		return (ret, diskdevno)
+
+	def probe_all(self, cache: BlkidCache) -> int:
+		self.obj.blkid_probe_all.argtypes = (c_void_p, )
+		self.obj.blkid_probe_all.restype = c_int
+		return self.obj.blkid_probe_all(cache.ptr)
+
+	def probe_all_new(self, cache: BlkidCache) -> int:
+		self.obj.blkid_probe_all_new.argtypes = (c_void_p, )
+		self.obj.blkid_probe_all_new.restype = c_int
+		return self.obj.blkid_probe_all_new(cache.ptr)
+
+	def probe_all_removable(self, cache: BlkidCache) -> int:
+		self.obj.blkid_probe_all_removable.argtypes = (c_void_p, )
+		self.obj.blkid_probe_all_removable.restype = c_int
+		return self.obj.blkid_probe_all_removable(cache.ptr)
+
+	def get_dev(self, cache: BlkidCache, devname: str, flags: int) -> BlkidDevice:
+		dev = BlkidDevice(self)
+		self.obj.blkid_get_dev.argtypes = (c_void_p, c_char_p, c_int, )
+		self.obj.blkid_get_dev.restype = c_void_p
+		dev.ptr = self.obj.blkid_get_dev(cache.ptr, devname, flags)
+		return dev
+
+	def get_dev_size(self, fd: int):
+		self.obj.blkid_get_dev_size.argtypes = (c_int, )
+		self.obj.blkid_get_dev_size.restype = c_uint64
+		return self.obj.blkid_get_dev_size(fd)
+
+	def verify(self, cache: BlkidCache, dev: BlkidDevice) -> BlkidDevice:
+		ret = BlkidDevice(self)
+		self.obj.blkid_verify.argtypes = (c_void_p, c_void_p, )
+		self.obj.blkid_verify.restype = c_void_p
+		ret.ptr = self.obj.blkid_verify(cache.ptr, dev.ptr)
+		return ret
+
+	def get_tag_value(self, iter: BlkidDeviceIterate=None, tagname: str=None, devname: str=None) -> str:
+		self.obj.blkid_get_tag_value.argtypes = (c_void_p, c_char_p, c_char_p, )
+		self.obj.blkid_get_tag_value.restype = c_char_p
+		i = iter.ptr if iter else None
+		t = tagname.encode() if tagname else None
+		d = devname.encode() if devname else None
+		ret = self.obj.blkid_get_tag_value(i, t, d)
+		return ret.decode() if ret else None
+
+	def get_devname(self, iter: BlkidDeviceIterate=None, token: str=None, value: str=None) -> str:
+		self.obj.blkid_get_devname.argtypes = (c_void_p, c_char_p, c_char_p, )
+		self.obj.blkid_get_devname.restype = c_char_p
+		i = iter.ptr if iter else None
+		t = token.encode() if token else None
+		v = value.encode() if value else None
+		ret = self.obj.blkid_get_devname(i, t, v)
+		return ret.decode() if ret else None
+
+	def tag_iterate_begin(self, dev: BlkidDevice) -> BlkidTagIterate:
+		ret = BlkidTagIterate(self)
+		self.obj.blkid_tag_iterate_begin.argtypes = (c_void_p, )
+		self.obj.blkid_tag_iterate_begin.restype = c_void_p
+		ret.ptr = self.obj.blkid_tag_iterate_begin(dev.ptr)
+		return ret
+
+	def tag_next(self, iter: BlkidTagIterate) -> tuple[int, str, str]:
+		type = POINTER(c_char_p)
+		value = POINTER(c_char_p)
+		self.obj.blkid_tag_next.argtypes = (c_void_p, c_void_p, c_void_p, )
+		self.obj.blkid_tag_next.restype = c_int
+		ret = self.obj.blkid_tag_next(iter.ptr, type, value)
+		return (ret, type, value)
+
+	def tag_iterate_end(self, iter: BlkidTagIterate):
+		self.obj.blkid_tag_iterate_end.argtypes = (c_void_p, )
+		self.obj.blkid_tag_iterate_end(iter.ptr)
+
+
+	def dev_has_tag(self, dev: BlkidDevice, type: str=None, value: str=None) -> int:
+		self.obj.blkid_dev_has_tag.argtypes = (c_void_p, str, str)
+		self.obj.blkid_dev_has_tag.restype = c_int
+		return self.obj.blkid_dev_has_tag(dev.ptr, type, value)
+
+	def find_dev_with_tag(self, cache: BlkidCache, type: str=None, value: str=None) -> BlkidDevice:
+		self.obj.blkid_find_dev_with_tag.argtypes = (c_void_p, str, str)
+		self.obj.blkid_find_dev_with_tag.restype = c_void_p
+		dev = BlkidDevice(self)
+		dev.ptr = self.obj.blkid_find_dev_with_tag(cache.ptr, type, value)
+		return dev
+
+	def parse_tag_string(self, token: str) -> tuple[int, str, str]:
+		self.obj.blkid_parse_tag_string.argtypes = (c_char_p, c_void_p, c_void_p, )
+		self.obj.blkid_parse_tag_string.restype = c_int
+		type = POINTER(c_char_p)
+		value = POINTER(c_char_p)
+		ret = self.obj.blkid_parse_tag_string(token, type, value)
+		return (ret, type, value)
+
+	def parse_version_string(self, ver_string: str) -> int:
+		self.obj.blkid_parse_version_string.argtypes = (c_char_p, )
+		self.obj.blkid_parse_version_string.restype = c_int
+		return self.obj.blkid_parse_version_string(ver_string)
+
+	def get_library_version(self) -> tuple[int, str, str]:
+		self.obj.blkid_get_library_version.argtypes = (c_char_p, c_char_p, )
+		self.obj.blkid_get_library_version.restype = c_int
+		ver = POINTER(c_char_p)
+		date = POINTER(c_char_p)
+		ret = self.obj.blkid_get_library_version(ver, date)
+		return (ret, ver, date)
+
+	def encode_string(self, str: str, str_enc: str, len: int) -> int:
+		self.obj.blkid_encode_string.argtypes = (c_char_p, c_char_p, c_uint64, )
+		self.obj.blkid_encode_string.restype = c_int
+		return self.obj.blkid_encode_string(str, str_enc, len)
+
+	def safe_string(self, str: str, str_safe: str, len: int) -> int:
+		self.obj.blkid_safe_string.argtypes = (c_char_p, c_char_p, c_uint64, )
+		self.obj.blkid_safe_string.restype = c_int
+		return self.obj.blkid_safe_string(str, str_safe, len)
+
+	def send_uevent(self, devname: str, action: str) -> int:
+		self.obj.blkid_send_uevent.argtypes = (c_char_p, c_char_p, )
+		self.obj.blkid_send_uevent.restype = c_int
+		return self.obj.blkid_send_uevent(devname, action)
+
+	def evaluate_tag(self, token: str, value: str=None, cache: BlkidCache=None) -> str:
+		self.obj.blkid_evaluate_tag.argtypes = (c_char_p, c_char_p, c_void_p, )
+		self.obj.blkid_evaluate_tag.restype = c_char_p
+		t = token.encode() if token else None
+		v = value.encode() if value else None
+		c = cache.pptr if cache else None
+		ret = self.obj.blkid_evaluate_tag(t, v, c)
+		return ret.decode() if ret else None
+
+	def evaluate_spec(self, spec: str, cache: BlkidCache) -> str:
+		self.obj.blkid_evaluate_tag.argtypes = (c_char_p, c_void_p, )
+		self.obj.blkid_evaluate_tag.restype = c_char_p
+		s = spec.encode() if spec else None
+		c = cache.pptr if cache else None
+		ret = self.obj.blkid_evaluate_spec(s, c)
+		return ret.decode() if ret else None
+
+	def new_probe(self) -> BlkidProbe:
+		self.obj.blkid_new_probe.argtypes = ()
+		self.obj.blkid_new_probe.restype = c_void_p
+		return BlkidProbe(self, self.obj.blkid_new_probe())
+
+	def new_probe_from_filename(self, filename: str) -> BlkidProbe:
+		self.obj.blkid_new_probe_from_filename.argtypes = (c_char_p, )
+		self.obj.blkid_new_probe_from_filename.restype = c_void_p
+		return BlkidProbe(self, self.obj.blkid_new_probe_from_filename(filename))
+
+	def free_probe(self, pr: BlkidProbe):
+		self.obj.blkid_free_probe.argtypes = (c_void_p, )
+		self.obj.blkid_free_probe.restype = None
+		self.obj.blkid_free_probe(pr.ptr)
+
+	def reset_probe(self, pr: BlkidProbe):
+		self.obj.blkid_reset_probe.argtypes = (c_void_p, )
+		self.obj.blkid_reset_probe.restype = None
+		self.obj.blkid_reset_probe(pr.ptr)
+
+	def probe_reset_buffers(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_reset_buffers.argtypes = (c_void_p, )
+		self.obj.blkid_probe_reset_buffers.restype = c_int
+		return self.obj.blkid_probe_reset_buffers(pr.ptr)
+
+	def probe_hide_range(self, pr: BlkidProbe, off: int, len: int) -> int:
+		self.obj.blkid_probe_hide_range.argtypes = (c_void_p, c_uint64, c_uint64, )
+		self.obj.blkid_probe_hide_range.restype = c_int
+		return self.obj.blkid_probe_hide_range(pr.ptr, off, len)
+
+	def probe_set_device(self, pr: BlkidProbe, fd: int, off: int, size: int) -> int:
+		self.obj.blkid_probe_set_device.argtypes = (c_void_p, c_int, c_uint64, c_uint64, )
+		self.obj.blkid_probe_set_device.restype = c_int
+		return self.obj.blkid_probe_set_device(pr.ptr, fd, off, size)
+
+	def probe_get_devno(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_get_devno.argtypes = (c_void_p, )
+		self.obj.blkid_probe_get_devno.restype = c_uint64
+		return self.obj.blkid_probe_get_devno()
+
+	def probe_get_wholedisk_devno(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_get_wholedisk_devno.argtypes = (c_void_p, )
+		self.obj.blkid_probe_get_wholedisk_devno.restype = c_uint64
+		return self.obj.blkid_probe_get_wholedisk_devno()
+
+	def probe_is_wholedisk(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_is_wholedisk.argtypes = (c_void_p, )
+		self.obj.blkid_probe_is_wholedisk.restype = c_int
+		return self.obj.blkid_probe_is_wholedisk(pr.ptr)
+
+	def probe_get_size(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_get_size.argtypes = (c_void_p, )
+		self.obj.blkid_probe_get_size.restype = c_uint64
+		return self.obj.blkid_probe_get_size(pr.ptr)
+
+	def probe_get_offset(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_get_offset.argtypes = (c_void_p, )
+		self.obj.blkid_probe_get_offset.restype = c_uint64
+		return self.obj.blkid_probe_get_offset(pr.ptr)
+
+	def probe_get_sectorsize(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_get_sectorsize.argtypes = (c_void_p, )
+		self.obj.blkid_probe_get_sectorsize.restype = c_uint
+		return self.obj.blkid_probe_get_sectorsize(pr.ptr)
+
+	def probe_set_sectorsize(self, pr: BlkidProbe, sz: int) -> int:
+		self.obj.blkid_probe_set_sectorsize.argtypes = (c_void_p, c_uint, )
+		self.obj.blkid_probe_set_sectorsize.restype = c_int
+		return self.obj.blkid_probe_set_sectorsize(pr.ptr, sz)
+
+	def probe_get_sectors(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_get_sectors.argtypes = (c_void_p, )
+		self.obj.blkid_probe_get_sectors.restype = c_uint64
+		return self.obj.blkid_probe_get_sectors(pr.ptr)
+
+	def probe_get_fd(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_get_fd.argtypes = (c_void_p, )
+		self.obj.blkid_probe_get_fd.restype = c_int
+		return self.obj.blkid_probe_get_fd(pr.ptr)
+
+	def probe_set_hint(self, pr: BlkidProbe, name: str, value: int) -> int:
+		self.obj.blkid_probe_set_hint.argtypes = (c_void_p, c_char_p, c_uint64, )
+		self.obj.blkid_probe_set_hint.restype = c_int
+		return self.obj.blkid_probe_set_hint(pr.ptr, name, value)
+
+	def probe_reset_hints(self, pr: BlkidProbe):
+		self.obj.blkid_probe_reset_hints.argtypes = (c_void_p, )
+		self.obj.blkid_probe_reset_hints.restype = None
+		self.obj.blkid_probe_reset_hints(pr.ptr)
+
+	def known_fstype(self, fstype: str) -> int:
+		self.obj.blkid_known_fstype.argtypes = (c_char_p, )
+		self.obj.blkid_known_fstype.restype = c_int
+		return self.obj.blkid_known_fstype(fstype)
+
+	def superblocks_get_name(self, idx: int, name: str, usage: int) -> int:
+		self.obj.blkid_superblocks_get_name.argtypes = (c_uint64, c_void_p, c_void_p, )
+		self.obj.blkid_superblocks_get_name.restype = c_int
+		name = POINTER(c_char_p)
+		usage = POINTER(c_int)
+		return self.obj.blkid_superblocks_get_name(idx, name, usage)
+
+	def probe_enable_superblocks(self, pr: BlkidProbe, enable: bool) -> int:
+		self.obj.blkid_probe_enable_superblocks.argtypes = (c_void_p, c_int, )
+		self.obj.blkid_probe_enable_superblocks.restype = c_int
+		return self.obj.blkid_probe_enable_superblocks(pr.ptr, enable)
+
+	def probe_set_superblocks_flags(self, pr: BlkidProbe, flags: int) -> int:
+		self.obj.blkid_probe_set_superblocks_flags.argtypes = (c_void_p, c_int, )
+		self.obj.blkid_probe_set_superblocks_flags.restype = c_int
+		return self.obj.blkid_probe_set_superblocks_flags(pr.ptr, flags)
+
+	def probe_reset_superblocks_filter(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_reset_superblocks_filter.argtypes = (c_void_p, )
+		self.obj.blkid_probe_reset_superblocks_filter.restype = c_int
+		return self.obj.blkid_probe_reset_superblocks_filter(pr.ptr)
+
+	def probe_invert_superblocks_filter(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_invert_superblocks_filter.argtypes = (c_void_p, )
+		self.obj.blkid_probe_invert_superblocks_filter.restype = c_int
+		return self.obj.blkid_probe_invert_superblocks_filter(pr.ptr)
+
+	def probe_filter_superblocks_type(self, pr: BlkidProbe, flag: int, names: list[str]) -> int:
+		self.obj.blkid_probe_filter_superblocks_type.argtypes = (c_void_p, c_int, c_void_p)
+		self.obj.blkid_probe_filter_superblocks_type.restype = c_int
+		return self.obj.blkid_probe_filter_superblocks_type(pr.ptr, flag, names)
+
+	def probe_filter_superblocks_usage(self, pr: BlkidProbe, flag: int, usage: int) -> int:
+		self.obj.blkid_probe_filter_superblocks_usage.argtypes = (c_void_p, c_int, c_int, )
+		self.obj.blkid_probe_filter_superblocks_usage.restype = c_int
+		return self.obj.blkid_probe_filter_superblocks_usage(pr.ptr, flag, usage)
+
+	def probe_enable_topology(self, pr: BlkidProbe, enable: bool) -> int:
+		self.obj.blkid_probe_enable_topology.argtypes = (c_void_p, c_int, )
+		self.obj.blkid_probe_enable_topology.restype = c_int
+		return self.obj.blkid_probe_enable_topology(pr.ptr, enable)
+
+	def probe_get_topology(self, pr: BlkidProbe) -> BlkidTopology:
+		self.obj.blkid_probe_get_topology.argtypes = (c_void_p, )
+		self.obj.blkid_probe_get_topology.restype = c_void_p
+		return BlkidTopology(self, self.obj.blkid_probe_get_topology(pr.ptr))
+
+	def topology_get_alignment_offset(self, tp: BlkidTopology) -> int:
+		self.obj.blkid_topology_get_alignment_offset.argtypes = (c_void_p, )
+		self.obj.blkid_topology_get_alignment_offset.restype = c_ulong
+		return self.obj.blkid_topology_get_alignment_offset(tp.ptr)
+
+	def topology_get_minimum_io_size(self, tp: BlkidTopology) -> int:
+		self.obj.blkid_topology_get_minimum_io_size.argtypes = (c_void_p, )
+		self.obj.blkid_topology_get_minimum_io_size.restype = c_ulong
+		return self.obj.blkid_topology_get_minimum_io_size(tp.ptr)
+
+	def topology_get_optimal_io_size(self, tp: BlkidTopology) -> int:
+		self.obj.blkid_topology_get_optimal_io_size.argtypes = (c_void_p, )
+		self.obj.blkid_topology_get_optimal_io_size.restype = c_ulong
+		return self.obj.blkid_topology_get_optimal_io_size(tp.ptr)
+
+	def topology_get_logical_sector_size(self, tp: BlkidTopology) -> int:
+		self.obj.blkid_topology_get_logical_sector_size.argtypes = (c_void_p, )
+		self.obj.blkid_topology_get_logical_sector_size.restype = c_ulong
+		return self.obj.blkid_topology_get_logical_sector_size(tp.ptr)
+
+	def topology_get_physical_sector_size(self, tp: BlkidTopology) -> int:
+		self.obj.blkid_topology_get_physical_sector_size.argtypes = (c_void_p, )
+		self.obj.blkid_topology_get_physical_sector_size.restype = c_ulong
+		return self.obj.blkid_topology_get_physical_sector_size(tp.ptr)
+
+	def topology_get_dax(self, tp: BlkidTopology) -> int:
+		self.obj.blkid_topology_get_dax.argtypes = (c_void_p, )
+		self.obj.blkid_topology_get_dax.restype = c_ulong
+		return self.obj.blkid_topology_get_dax(tp.ptr)
+
+	def topology_get_diskseq(self, tp: BlkidTopology) -> int:
+		self.obj.blkid_topology_get_diskseq.argtypes = (c_void_p, )
+		self.obj.blkid_topology_get_diskseq.restype = c_uint64
+		return self.obj.blkid_topology_get_diskseq(tp.ptr)
+
+	def known_pttype(self, pttype: str) -> int:
+		self.obj.blkid_known_pttype.argtypes = (c_char_p, )
+		self.obj.blkid_known_pttype.restype = c_int
+		return self.obj.blkid_known_pttype(pttype)
+
+	def partitions_get_name(self, idx: int, name: str) -> tuple[int, str]:
+		self.obj.blkid_partitions_get_name.argtypes = (c_uint64, c_void_p, )
+		self.obj.blkid_partitions_get_name.restype = c_int
+		tname = c_char_p(name.encode())
+		pname = pointer(tname)
+		ret = self.obj.blkid_partitions_get_name(idx, pname)
+		return (ret, tname.decode())
+
+	def probe_enable_partitions(self, pr: BlkidProbe, enable: c_bool) -> int:
+		self.obj.blkid_probe_enable_partitions.argtypes = (c_void_p, c_int, )
+		self.obj.blkid_probe_enable_partitions.restype = c_int
+		return self.obj.blkid_probe_enable_partitions(pr.ptr, enable)
+
+	def probe_reset_partitions_filter(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_reset_partitions_filter.argtypes = (c_void_p, )
+		self.obj.blkid_probe_reset_partitions_filter.restype = c_int
+		return self.obj.blkid_probe_reset_partitions_filter(pr.ptr)
+
+	def probe_invert_partitions_filter(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_invert_partitions_filter.argtypes = (c_void_p, )
+		self.obj.blkid_probe_invert_partitions_filter.restype = c_int
+		return self.obj.blkid_probe_invert_partitions_filter(pr.ptr)
+
+	def probe_filter_partitions_type(self, pr: BlkidProbe, flag: int, names: list[str]) -> int:
+		self.obj.blkid_probe_filter_partitions_type.argtypes = (c_void_p, c_int, c_void_p, )
+		self.obj.blkid_probe_filter_partitions_type.restype = c_int
+		return self.obj.blkid_probe_filter_partitions_type(pr.ptr, flag, names)
+
+	def probe_set_partitions_flags(self, pr: BlkidProbe, flags: int) -> int:
+		self.obj.blkid_probe_set_partitions_flags.argtypes = (c_void_p, c_int, )
+		self.obj.blkid_probe_set_partitions_flags.restype = c_int
+		return self.obj.blkid_probe_set_partitions_flags(pr.ptr, flags)
+
+	def probe_get_partitions(self, pr: BlkidProbe) -> BlkidPartList:
+		self.obj.blkid_probe_get_partitions.argtypes = (c_void_p, )
+		self.obj.blkid_probe_get_partitions.restype = c_void_p
+		return BlkidPartList(self, self.obj.blkid_probe_get_partitions(pr.ptr))
+
+	def partlist_numof_partitions(self, ls: BlkidPartList) -> int:
+		self.obj.blkid_partlist_numof_partitions.argtypes = (c_void_p, )
+		self.obj.blkid_partlist_numof_partitions.restype = c_int
+		return self.obj.blkid_partlist_numof_partitions(ls.ptr)
+
+	def partlist_get_table(self, ls: BlkidPartList) -> BlkidPartTable:
+		self.obj.blkid_partlist_get_table.argtypes = (c_void_p, )
+		self.obj.blkid_partlist_get_table.restype = c_void_p
+		return BlkidPartTable(self, self.obj.blkid_partlist_get_table(ls.ptr))
+
+	def partlist_get_partition(self, ls: BlkidPartList, n: int) -> BlkidPartition:
+		self.obj.blkid_partlist_get_partition.argtypes = (c_void_p, c_int, )
+		self.obj.blkid_partlist_get_partition.restype = c_void_p
+		return BlkidPartition(self, self.obj.blkid_partlist_get_partition(ls.ptr, n))
+
+	def partlist_get_partition_by_partno(self, ls: BlkidPartList, n: int) -> BlkidPartition:
+		self.obj.blkid_partlist_get_partition_by_partno.argtypes = (c_void_p, c_int, )
+		self.obj.blkid_partlist_get_partition_by_partno.restype = c_void_p
+		return BlkidPartition(self, self.obj.blkid_partlist_get_partition_by_partno(ls.ptr, n))
+
+	def partlist_devno_to_partition(self, ls: BlkidPartList, devno: int) -> BlkidPartition:
+		self.obj.blkid_partlist_devno_to_partition.argtypes = (c_void_p, c_int, )
+		self.obj.blkid_partlist_devno_to_partition.restype = c_void_p
+		return BlkidPartition(self, self.obj.blkid_partlist_devno_to_partition(ls.ptr, devno))
+
+	def partition_get_table(self, par: BlkidPartition) -> BlkidPartTable:
+		self.obj.blkid_partition_get_table.argtypes = (c_void_p, )
+		self.obj.blkid_partition_get_table.restype = c_void_p
+		return BlkidPartTable(self, self.obj.blkid_partition_get_table(par.ptr))
+
+	def partition_get_name(self, par: BlkidPartition) -> str:
+		self.obj.blkid_partition_get_name.argtypes = (c_void_p, )
+		self.obj.blkid_partition_get_name.restype = c_char_p
+		return self.obj.blkid_partition_get_name(par.ptr).decode()
+
+	def partition_get_uuid(self, par: BlkidPartition) -> str:
+		self.obj.blkid_partition_get_uuid.argtypes = (c_void_p, )
+		self.obj.blkid_partition_get_uuid.restype = c_char_p
+		return self.obj.blkid_partition_get_uuid(par.ptr).decode()
+
+	def partition_get_partno(self, par: BlkidPartition) -> int:
+		self.obj.blkid_partition_get_partno.argtypes = (c_void_p, )
+		self.obj.blkid_partition_get_partno.restype = c_int
+		return self.obj.blkid_partition_get_partno(par.ptr)
+
+	def partition_get_start(self, par: BlkidPartition) -> int:
+		self.obj.blkid_partition_get_start.argtypes = (c_void_p, )
+		self.obj.blkid_partition_get_start.restype = c_int
+		return self.obj.blkid_partition_get_start(par.ptr)
+
+	def partition_get_size(self, par: BlkidPartition) -> int:
+		self.obj.blkid_partition_get_size.argtypes = (c_void_p, )
+		self.obj.blkid_partition_get_size.restype = c_int
+		return self.obj.blkid_partition_get_size(par.ptr)
+
+	def partition_get_type(self, par: BlkidPartition) -> int:
+		self.obj.blkid_partition_get_type.argtypes = (c_void_p, )
+		self.obj.blkid_partition_get_type.restype = c_int
+		return self.obj.blkid_partition_get_type(par.ptr)
+
+	def partition_get_type_string(self, par: BlkidPartition) -> str:
+		self.obj.blkid_partition_get_type_string.argtypes = (c_void_p, )
+		self.obj.blkid_partition_get_type_string.restype = c_char_p
+		return self.obj.blkid_partition_get_type_string(par.ptr).decode()
+
+	def partition_get_flags(self, par: BlkidPartition) -> int:
+		self.obj.blkid_partition_get_flags.argtypes = (c_void_p, )
+		self.obj.blkid_partition_get_flags.restype = c_int
+		return self.obj.blkid_partition_get_flags(par.ptr)
+
+	def partition_is_logical(self, par: BlkidPartition) -> bool:
+		self.obj.blkid_partition_is_logical.argtypes = (c_void_p, )
+		self.obj.blkid_partition_is_logical.restype = c_int
+		return bool(self.obj.blkid_partition_is_logical(par.ptr))
+
+	def partition_is_extended(self, par: BlkidPartition) -> bool:
+		self.obj.blkid_partition_is_extended.argtypes = (c_void_p, )
+		self.obj.blkid_partition_is_extended.restype = c_int
+		return bool(self.obj.blkid_partition_is_extended(par.ptr))
+
+	def partition_is_primary(self, par: BlkidPartition) -> bool:
+		self.obj.blkid_partition_is_primary.argtypes = (c_void_p, )
+		self.obj.blkid_partition_is_primary.restype = c_int
+		return bool(self.obj.blkid_partition_is_primary(par.ptr))
+
+	def parttable_get_type(self, tab: BlkidPartTable) -> str:
+		self.obj.blkid_parttable_get_type.argtypes = (c_void_p, )
+		self.obj.blkid_parttable_get_type.restype = c_char_p
+		return self.obj.blkid_parttable_get_type(tab.ptr).decode()
+
+	def parttable_get_id(self, tab: BlkidPartTable) -> str:
+		self.obj.blkid_parttable_get_id.argtypes = (c_void_p, )
+		self.obj.blkid_parttable_get_id.restype = c_char_p
+		return self.obj.blkid_parttable_get_id(tab.ptr).decode()
+
+	def parttable_get_offset(self, tab: BlkidPartTable) -> int:
+		self.obj.blkid_parttable_get_offset.argtypes = (c_void_p, )
+		self.obj.blkid_parttable_get_offset.restype = c_int
+		return self.obj.blkid_parttable_get_offset(tab.ptr)
+
+	def parttable_get_parent(self, tab: BlkidPartTable) -> BlkidPartition:
+		self.obj.blkid_parttable_get_parent.argtypes = (c_void_p, )
+		self.obj.blkid_parttable_get_parent.restype = c_void_p
+		return BlkidPartition(self, self.obj.blkid_parttable_get_parent(tab.ptr))
+
+	def do_probe(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_do_probe.argtypes = (c_void_p, )
+		self.obj.blkid_do_probe.restype = c_int
+		return self.obj.blkid_do_probe(pr.ptr)
+
+	def do_safeprobe(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_do_safeprobe.argtypes = (c_void_p, )
+		self.obj.blkid_do_safeprobe.restype = c_int
+		return self.obj.blkid_do_safeprobe(pr.ptr)
+
+	def do_fullprobe(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_do_fullprobe.argtypes = (c_void_p, )
+		self.obj.blkid_do_fullprobe.restype = c_int
+		return self.obj.blkid_do_fullprobe(pr.ptr)
+
+	def probe_numof_values(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_numof_values.argtypes = (c_void_p, )
+		self.obj.blkid_probe_numof_values.restype = c_int
+		return self.obj.blkid_probe_numof_values(pr.ptr)
+
+	def probe_get_value(self, pr: BlkidProbe, num: int) -> tuple[int, str, str, int]:
+		self.obj.blkid_probe_get_value.argtypes = (c_void_p, c_int, c_void_p, c_void_p, c_void_p, )
+		self.obj.blkid_probe_get_value.restype = c_int
+		name = POINTER(c_char_p)
+		data = POINTER(c_char_p)
+		len = POINTER(c_uint64)
+		ret = self.obj.blkid_probe_get_value(pr.ptr, num, name, data, len)
+		return (ret, name, data, len)
+
+	def probe_lookup_value(self, pr: BlkidProbe, name: str, data: str, len: int) -> int:
+		self.obj.blkid_probe_lookup_value.argtypes = (c_void_p, c_char_p, c_void_p, c_void_p, )
+		self.obj.blkid_probe_lookup_value.restype = c_int
+		data = POINTER(c_char_p)
+		len = POINTER(c_uint64)
+		return self.obj.blkid_probe_lookup_value(pr, name, data, len)
+
+	def probe_has_value(self, pr: BlkidProbe, name: str) -> int:
+		self.obj.blkid_probe_has_value.argtypes = (c_void_p, c_char_p, )
+		self.obj.blkid_probe_has_value.restype = c_int
+		return self.obj.blkid_probe_has_value(pr.ptr, name)
+
+	def do_wipe(self, pr: BlkidProbe, dryrun: bool=False) -> int:
+		self.obj.blkid_do_wipe.argtypes = (c_void_p, c_int, )
+		self.obj.blkid_do_wipe.restype = c_int
+		return self.obj.blkid_do_wipe(pr.ptr, dryrun)
+
+	def wipe_all(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_wipe_all.argtypes = (c_void_p, )
+		self.obj.blkid_wipe_all.restype = c_int
+		return self.obj.blkid_wipe_all(pr.ptr)
+
+	def probe_step_back(self, pr: BlkidProbe) -> int:
+		self.obj.blkid_probe_step_back.argtypes = (c_void_p, )
+		self.obj.blkid_probe_step_back.restype = c_int
+		return self.obj.blkid_probe_step_back(pr.ptr)

builder/lib/cgroup.py

@@ -0,0 +1,64 @@
+import os
+import time
+import signal
+from logging import getLogger
+log = getLogger(__name__)
+
+
+class CGroup:
+	fs: str = "/sys/fs/cgroup"
+	name: str
+
+	@property
+	def path(self) -> str:
+		return os.path.join(self.fs, self.name)
+
+	@property
+	def valid(self) -> bool:
+		return os.path.exists(self.path)
+
+	def create(self):
+		if self.valid: return
+		os.mkdir(self.path)
+
+	def destroy(self):
+		if not self.valid: return
+		os.rmdir(self.path)
+
+	def add_pid(self, pid: int):
+		if not self.valid: return
+		procs = os.path.join(self.path, "cgroup.procs")
+		with open(procs, "w") as f:
+			f.write(f"{pid}\n")
+
+	def list_pid(self) -> list[int]:
+		ret: list[int] = []
+		if not self.valid: return ret
+		procs = os.path.join(self.path, "cgroup.procs")
+		with open(procs, "r") as f:
+			for line in f:
+				ret.append(int(line))
+		return ret
+
+	def kill_all(self, sig: int = signal.SIGTERM, timeout: int = 10, kill: int = 8):
+		if not self.valid: return
+		pids = self.list_pid()
+		remain = 0
+		while True:
+			for pid in pids:
+				log.debug(f"killing {pid}")
+				try: os.kill(pid, sig)
+				except: pass
+			try: os.waitpid(-1, os.WNOHANG)
+			except: pass
+			pids = self.list_pid()
+			if len(pids) <= 0: break
+			if 0 < kill <= remain:
+				sig = signal.SIGKILL
+			if remain >= timeout:
+				raise TimeoutError("killing pids timedout")
+			time.sleep(1)
+
+	def __init__(self, name: str, fs: str = None):
+		if fs: self.fs = fs
+		self.name = name

builder/lib/config.py

@@ -0,0 +1,104 @@
+import os
+import yaml
+from logging import getLogger
+from builder.lib import json
+from builder.lib.cpu import cpu_arch_compatible
+from builder.lib.context import ArchBuilderContext
+log = getLogger(__name__)
+
+
+class ArchBuilderConfigError(Exception):
+	pass
+
+
+def _dict_merge(dst: dict, src: dict):
+	for key in src.keys():
+		st = type(src[key])
+		if key in dst and st is type(dst[key]):
+			if st == list:
+				dst[key].extend(src[key])
+				continue
+			if st == dict:
+				_dict_merge(dst[key], src[key])
+				continue
+		dst[key] = src[key]
+
+
+def load_config_file(ctx: ArchBuilderContext, path: str):
+	"""
+	Load one config (yaml/json) to context
+	"""
+	log.debug(f"try to open config {path}")
+	try:
+		with open(path, "r") as f:
+			if path.endswith((".yml", ".yaml")):
+				log.debug(f"load {path} as yaml")
+				loaded = yaml.safe_load(f)
+			elif path.endswith((".jsn", ".json")):
+				log.debug(f"load {path} as json")
+				loaded = json.load(f)
+		log.info(f"loaded config {path}")
+	except BaseException:
+		log.error(f"failed to load config {path}")
+		raise
+	def _proc_include(inc: str | list[str]):
+		pt = type(inc)
+		if pt is str: inc = [inc]
+		elif pt is list: pass
+		else: raise ArchBuilderConfigError("bad type for also")
+		load_configs(ctx, inc)
+	if loaded is None: return
+	if "+also" in loaded:
+		_proc_include(loaded["+also"])
+		loaded.pop("+also")
+	if ctx.config is None:
+		log.debug(f"use {path} as current config")
+		ctx.config = loaded
+	else:
+		log.debug(f"merge {path} into current config")
+		_dict_merge(ctx.config, loaded)
+	if "+then" in loaded:
+		_proc_include(loaded["+then"])
+		loaded.pop("+then")
+
+
+def populate_config(ctx: ArchBuilderContext):
+	ctx.finish_config()
+	ctx.resolve_subscript()
+	if "target" not in ctx.config:
+		raise ArchBuilderConfigError("no target set")
+	if "arch" not in ctx.config:
+		raise ArchBuilderConfigError("no cpu arch set")
+	ctx.target = ctx.config["target"]
+	ctx.tgt_arch = ctx.config["arch"]
+	if ctx.tgt_arch == "any" or ctx.cur_arch == "any":
+		raise ArchBuilderConfigError("bad cpu arch value")
+	if not cpu_arch_compatible(ctx.tgt_arch, ctx.cur_arch):
+		log.warning(
+			f"current cpu arch {ctx.cur_arch} is not compatible to {ctx.tgt_arch}, "
+			"you may need qemu-user-static-binfmt to run incompatible executables",
+		)
+	jstr = json.dumps(ctx.config, indent=2)
+	log.debug(f"populated config:\n {jstr}")
+
+
+def load_configs(ctx: ArchBuilderContext, configs: list[str]):
+	"""
+	Load multiple config to context
+	"""
+	loaded = 0
+	for config in configs:
+		success = False
+		for suffix in ["yml", "yaml", "jsn", "json"]:
+			fn = f"{config}.{suffix}"
+			path = os.path.join(ctx.dir, "configs", fn)
+			if os.path.exists(path):
+				load_config_file(ctx, path)
+				loaded += 1
+				success = True
+		if not success:
+			raise FileNotFoundError(f"config {config} not found")
+	if loaded > 0:
+		if ctx.config is None:
+			raise ArchBuilderConfigError("no any config loaded")
+	log.debug(f"loaded {loaded} configs")

builder/lib/context.py

@@ -0,0 +1,156 @@
+import os
+from copy import deepcopy
+from subprocess import Popen, PIPE
+from logging import getLogger
+from builder.lib.cpu import cpu_arch_get
+from builder.lib.utils import parse_cmd_args
+from builder.lib.subscript import dict_get
+from builder.lib.loop import loop_detach
+from builder.lib.mount import MountTab
+from builder.lib.cgroup import CGroup
+from builder.lib.subscript import SubScript
+from builder.lib.shadow import PasswdFile, GroupFile
+log = getLogger(__name__)
+
+
+class ArchBuilderContext:
+
+	"""
+	Config from configs/{CONFIG}.yaml
+	"""
+	config: dict = {}
+	config_orig: dict = {}
+
+	"""
+	Target name
+	"""
+	target: str = None
+	tgt_arch: str = None
+
+	"""
+	CPU architecture
+	"""
+	cur_arch: str = cpu_arch_get()
+
+	"""
+	RootFS ready for chroot
+	"""
+	chroot: bool = False
+
+	"""
+	Repack rootfs only
+	"""
+	repack: bool = False
+
+	"""
+	Top tree folder
+	"""
+	dir: str = None
+
+	"""
+	Workspace folder
+	"""
+	work: str = None
+
+	"""
+	Current mounted list
+	"""
+	mounted: MountTab = MountTab()
+
+	"""
+	fstab for rootfs
+	"""
+	fstab: MountTab = MountTab()
+
+	"""
+	Enable GPG check for pacman packages and databases
+	"""
+	gpgcheck: bool = True
+
+	"""
+	Control group for chroot
+	"""
+	cgroup: CGroup = None
+
+	"""
+	File system map for host
+	"""
+	fsmap: dict = {}
+
+	"""
+	Loopback block for build
+	"""
+	loops: list[str] = []
+
+	"""
+	User config for rootfs
+	"""
+	passwd: PasswdFile = PasswdFile()
+	group: GroupFile = GroupFile()
+
+	def get(self, key: str, default=None):
+		try: return dict_get(key, self.config)
+		except: return default
+
+	def get_rootfs(self): return os.path.join(self.work, "rootfs")
+	def get_output(self): return os.path.join(self.work, "output")
+	def get_mount(self): return os.path.join(self.work, "mount")
+
+	def __init__(self):
+		self.cgroup = CGroup("arch-image-builder")
+		self.cgroup.create()
+
+	def __deinit__(self):
+		self.cleanup()
+
+	def cleanup(self):
+		from builder.build.mount import undo_mounts
+		self.cgroup.kill_all()
+		self.cgroup.destroy()
+		undo_mounts(self)
+		for loop in self.loops:
+			log.debug(f"detaching loop {loop}")
+			loop_detach(loop)
+
+	def run_external(
+		self,
+		cmd: str | list[str],
+		/,
+		cwd: str = None,
+		env: dict = None,
+		stdin: str | bytes = None
+	) -> int:
+		"""
+		Run external command
+		run_external("mke2fs -t ext4 ext4.img")
+		"""
+		args = parse_cmd_args(cmd)
+		argv = " ".join(args)
+		log.debug(f"running external command {argv}")
+		fstdin = None if stdin is None else PIPE
+		proc = Popen(args, cwd=cwd, env=env, stdin=fstdin)
+		self.cgroup.add_pid(proc.pid)
+		if stdin:
+			if type(stdin) is str: stdin = stdin.encode()
+			proc.stdin.write(stdin)
+			proc.stdin.close()
+		ret = proc.wait()
+		log.debug(f"command exit with {ret}")
+		return ret
+
+	def reload_passwd(self):
+		root = self.get_rootfs()
+		pf = os.path.join(root, "etc/passwd")
+		gf = os.path.join(root, "etc/group")
+		self.passwd.unload()
+		self.group.unload()
+		if os.path.exists(pf): self.passwd.load_file(pf)
+		if os.path.exists(gf): self.group.load_file(gf)
+
+	def finish_config(self):
+		self.config_orig = deepcopy(self.config)
+
+	def resolve_subscript(self):
+		ss = SubScript()
+		self.config = deepcopy(self.config_orig)
+		ss.parse(self.config)

builder/lib/cpu.py

@@ -0,0 +1,74 @@
+import os
+from logging import getLogger
+log = getLogger(__name__)
+
+
+def cpu_arch_name_map(name: str) -> str:
+	"""
+	Map cpu arch name to archlinux names
+	cpu_arch_name_map("amd64") = "x86_64"
+	cpu_arch_name_map("x86_64") = "x86_64"
+	cpu_arch_name_map("ARM64") = "arm64"
+	"""
+	match name.lower():
+		case "x64" | "amd64" | "intel64": return "x86_64"
+		case "i386" | "i486" | "i586" | "x86" | "ia32": return "i686"
+		case "arm64" | "armv8a" | "armv8" | "arm-v8a" | "arm-v8" | "aa64": return "aarch64"
+		case "arm32" | "aarch32" | "aa32" | "armv7" | "armv7l" | "arm-v7" | "arm-v7l" | "arm-v7h": return "armv7h"
+		case _: return name.lower()
+
+
+def cpu_arch_get_raw() -> str:
+	"""
+	Get current cpu arch
+	cpu_arch_get() = "amd64"
+	cpu_arch_get() = "x86_64"
+	cpu_arch_get() = "arm64"
+	"""
+	return os.uname().machine
+
+
+def cpu_arch_get() -> str:
+	"""
+	Get current cpu arch and map to archlinux names
+	cpu_arch_get() = "x86_64"
+	cpu_arch_get() = "arm64"
+	"""
+	return cpu_arch_name_map(cpu_arch_get_raw())
+
+
+def cpu_arch_compatible_one(
+	supported: str,
+	current: str = cpu_arch_get_raw()
+) -> bool:
+	"""
+	Is current cpu compatible with supported
+	cpu_arch_compatible("any", "x86_64") = True
+	cpu_arch_compatible("any", "aarch64") = True
+	cpu_arch_compatible("aarch64", "x86_64") = False
+	cpu_arch_compatible("x86_64", "x86_64") = True
+	"""
+	cur = cpu_arch_name_map(current.strip())
+	name = cpu_arch_name_map(supported.strip())
+	if len(name) == 0: return False
+	return name == cur or name == "any"
+
+
+def cpu_arch_compatible(
+	supported: str | list[str],
+	current: str = cpu_arch_get_raw()
+) -> bool:
+	"""
+	Is current cpu compatible with supported list
+	cpu_arch_compatible("any", "x86_64") = True
+	cpu_arch_compatible("any", "aarch64") = True
+	cpu_arch_compatible("aarch64", "x86_64") = False
+	cpu_arch_compatible("x86_64,aarch64", "x86_64") = True
+	"""
+	if type(supported) is str: arch = supported.split(",")
+	elif type(supported) is list: arch = supported
+	else: raise TypeError("unknown type for supported")
+	for cpu in arch:
+		if cpu_arch_compatible_one(cpu, current):
+			return True
+	return True

builder/lib/json.py

@@ -0,0 +1,78 @@
+import json
+from uuid import UUID
+from builder.lib import serializable
+
+
+class SerializableEncoder(json.JSONEncoder):
+	def default(self, o):
+		if isinstance(o, UUID):
+			return str(o)
+		if isinstance(o, serializable.SerializableDict):
+			return o.to_dict()
+		if isinstance(o, serializable.SerializableList):
+			return o.to_list()
+		if isinstance(o, serializable.Serializable):
+			return o.serialize()
+		return super().default(o)
+
+
+def dump(
+	obj, fp, *,
+	skipkeys=False,
+	ensure_ascii=True,
+	check_circular=True,
+	allow_nan=True,
+	cls=None,
+	indent=None,
+	separators=None,
+	default=None,
+	sort_keys=False,
+	**kw
+):
+	if cls is None: cls = SerializableEncoder
+	return json.dump(
+		obj, fp,
+		skipkeys=skipkeys,
+		ensure_ascii=ensure_ascii,
+		check_circular=check_circular,
+		allow_nan=allow_nan,
+		cls=cls,
+		indent=indent,
+		separators=separators,
+		default=default,
+		sort_keys=sort_keys,
+		**kw
+	)
+
+
+def dumps(
+	obj, *,
+	skipkeys=False,
+	ensure_ascii=True,
+	check_circular=True,
+	allow_nan=True,
+	cls=None,
+	indent=None,
+	separators=None,
+	default=None,
+	sort_keys=False,
+	**kw
+):
+	if cls is None: cls = SerializableEncoder
+	return json.dumps(
+		obj,
+		skipkeys=skipkeys,
+		ensure_ascii=ensure_ascii,
+		check_circular=check_circular,
+		allow_nan=allow_nan,
+		cls=cls,
+		indent=indent,
+		separators=separators,
+		default=default,
+		sort_keys=sort_keys,
+		**kw
+	)
+
+
+load = json.load
+loads = json.loads

builder/lib/loop.py

@@ -0,0 +1,229 @@
+import io
+import os
+import stat
+import fcntl
+import ctypes
+from builder.lib import utils
+
+
+LO_NAME_SIZE         = 64
+LO_KEY_SIZE          = 32
+LO_FLAGS_READ_ONLY   = 1
+LO_FLAGS_AUTOCLEAR   = 4
+LO_FLAGS_PARTSCAN    = 8
+LO_FLAGS_DIRECT_IO   = 16
+LO_CRYPT_NONE        = 0
+LO_CRYPT_XOR         = 1
+LO_CRYPT_DES         = 2
+LO_CRYPT_FISH2       = 3
+LO_CRYPT_BLOW        = 4
+LO_CRYPT_CAST128     = 5
+LO_CRYPT_IDEA        = 6
+LO_CRYPT_DUMMY       = 9
+LO_CRYPT_SKIPJACK    = 10
+LO_CRYPT_CRYPTOAPI   = 18
+MAX_LO_CRYPT         = 20
+LOOP_SET_FD          = 0x4C00
+LOOP_CLR_FD          = 0x4C01
+LOOP_SET_STATUS      = 0x4C02
+LOOP_GET_STATUS      = 0x4C03
+LOOP_SET_STATUS64    = 0x4C04
+LOOP_GET_STATUS64    = 0x4C05
+LOOP_CHANGE_FD       = 0x4C06
+LOOP_SET_CAPACITY    = 0x4C07
+LOOP_SET_DIRECT_IO   = 0x4C08
+LOOP_SET_BLOCK_SIZE  = 0x4C09
+LOOP_CONFIGURE       = 0x4C0A
+LOOP_CTL_ADD         = 0x4C80
+LOOP_CTL_REMOVE      = 0x4C81
+LOOP_CTL_GET_FREE    = 0x4C82
+LOOP_SET_STATUS_SETTABLE_FLAGS   = LO_FLAGS_AUTOCLEAR | LO_FLAGS_PARTSCAN
+LOOP_SET_STATUS_CLEARABLE_FLAGS  = LO_FLAGS_AUTOCLEAR
+LOOP_CONFIGURE_SETTABLE_FLAGS    = LO_FLAGS_READ_ONLY | LO_FLAGS_AUTOCLEAR | LO_FLAGS_PARTSCAN | LO_FLAGS_DIRECT_IO
+
+
+class LoopInfo64(ctypes.Structure):
+	_fields_ = [
+		("lo_device",            ctypes.c_uint64),
+		("lo_inode",             ctypes.c_uint64),
+		("lo_rdevice",           ctypes.c_uint64),
+		("lo_offset",            ctypes.c_uint64),
+		("lo_sizelimit",         ctypes.c_uint64),
+		("lo_number",            ctypes.c_uint32),
+		("lo_encrypt_type",      ctypes.c_uint32),
+		("lo_encrypt_key_size",  ctypes.c_uint32),
+		("lo_flags",             ctypes.c_uint32),
+		("lo_file_name",         ctypes.c_char * LO_NAME_SIZE),
+		("lo_crypt_name",        ctypes.c_char * LO_NAME_SIZE),
+		("lo_encrypt_key",       ctypes.c_byte * LO_KEY_SIZE),
+		("lo_init",              ctypes.c_uint64 * 2),
+	]
+
+
+class LoopConfig(ctypes.Structure):
+	_fields_ = [
+		("fd",         ctypes.c_uint32),
+		("block_size", ctypes.c_uint32),
+		("info",       LoopInfo64),
+		("__reserved", ctypes.c_uint64 * 8),
+	]
+
+
+def loop_get_free_no() -> int:
+	ctrl = os.open("/dev/loop-control", os.O_RDWR)
+	try:
+		no = fcntl.ioctl(ctrl, LOOP_CTL_GET_FREE)
+		if no < 0: raise OSError("LOOP_CTL_GET_FREE failed")
+	finally: os.close(ctrl)
+	return no
+
+
+def loop_get_free() -> str:
+	no = loop_get_free_no()
+	return f"/dev/loop{no}"
+
+
+def loop_create_dev(no: int, dev: str = None) -> str:
+	if dev is None:
+		dev = f"/dev/loop{no}"
+	if not os.path.exists(dev):
+		if no < 0: raise ValueError("no loop number set")
+		a_mode = stat.S_IRUSR | stat.S_IWUSR | stat.S_IFBLK
+		a_dev = os.makedev(7, no)
+		os.mknod(dev, a_mode, a_dev)
+	return dev
+
+
+def loop_detach(dev: str):
+	loop = os.open(dev, os.O_RDWR)
+	try:
+		ret = fcntl.ioctl(loop, LOOP_CLR_FD)
+		if ret != 0: raise OSError(f"detach loop device {dev} failed")
+	finally: os.close(loop)
+
+
+def loop_setup(
+	path: str = None,
+	fio: io.FileIO = None,
+	fd: int = -1,
+	dev: str = None,
+	no: int = -1,
+	offset: int = 0,
+	size: int = 0,
+	block_size: int = 512,
+	read_only: bool = False,
+	part_scan: bool = False,
+	auto_clear: bool = False,
+	direct_io: bool = False,
+) -> str:
+	if path is None and fio is None and fd < 0:
+		raise ValueError("no source file set")
+	if no < 0:
+		if dev is None:
+			dev = loop_get_free()
+		else:
+			fn = os.path.basename(dev)
+			if fn.startswith("loop"): no = int(fn[4:])
+	loop_create_dev(no=no, dev=dev)
+	opened, loop = -1, -1
+	if fio:
+		if fd < 0: fd = fio.fileno()
+		if path is None: path = fio.name
+	elif fd >= 0:
+		if path is None: path = utils.fd_get_path(fd)
+		if path is None: raise OSError("bad fd for loop")
+	elif path:
+		path = os.path.realpath(path)
+		opened = os.open(path, os.O_RDWR)
+		if opened < 0: raise OSError(f"open {path} failed")
+		fd = opened
+	else: raise ValueError("no source file set")
+	flags = 0
+	if part_scan: flags |= LO_FLAGS_PARTSCAN
+	if direct_io: flags |= LO_FLAGS_DIRECT_IO
+	if read_only: flags |= LO_FLAGS_READ_ONLY
+	if auto_clear: flags |= LO_FLAGS_AUTOCLEAR
+	try:
+		file_name = path[0:63].encode()
+		li = LoopInfo64(
+			lo_flags=flags,
+			lo_offset=offset,
+			lo_sizelimit=size,
+			lo_file_name=file_name,
+		)
+		lc = LoopConfig(fd=fd, block_size=block_size, info=li)
+		loop = os.open(dev, os.O_RDWR)
+		if loop < 0: raise OSError(f"open loop device {dev} failed")
+		ret = fcntl.ioctl(loop, LOOP_CONFIGURE, lc)
+		if ret != 0: raise OSError(f"configure loop device {dev} with {path} failed")
+	finally:
+		if loop >= 0: os.close(loop)
+		if opened >= 0: os.close(opened)
+	return dev
+
+
+def loop_get_sysfs(dev: str) -> str:
+	st = os.stat(dev)
+	if not stat.S_ISBLK(st.st_mode):
+		raise ValueError(f"device {dev} is not block")
+	major = os.major(st.st_rdev)
+	minor = os.minor(st.st_rdev)
+	if major != 7:
+		raise ValueError(f"device {dev} is not loop")
+	sysfs = f"/sys/dev/block/{major}:{minor}"
+	if not os.path.exists(sysfs):
+		raise RuntimeError("get sysfs failed")
+	return sysfs
+
+
+def loop_get_backing(dev: str) -> str:
+	sysfs = loop_get_sysfs(dev)
+	path = os.path.join(sysfs, "loop", "backing_file")
+	with open(path, "r") as f:
+		backing = f.read()
+		return os.path.realpath(backing.strip())
+
+
+def loop_get_offset(dev: str) -> int:
+	sysfs = loop_get_sysfs(dev)
+	path = os.path.join(sysfs, "loop", "offset")
+	with open(path, "r") as f:
+		backing = f.read()
+		return int(backing.strip())
+
+
+class LoopDevice:
+	device: str
+
+	def __init__(
+		self,
+		path: str = None,
+		fio: io.FileIO = None,
+		fd: int = -1,
+		dev: str = None,
+		no: int = -1,
+		offset: int = 0,
+		size: int = 0,
+		block_size: int = 512,
+		read_only: bool = False,
+		part_scan: bool = False,
+		auto_clear: bool = False,
+		direct_io: bool = False,
+	):
+		self.device = loop_setup(
+			path=path,
+			fio=fio,
+			fd=fd,
+			dev=dev,
+			no=no,
+			offset=offset,
+			size=size,
+			block_size=block_size,
+			read_only=read_only,
+			part_scan=part_scan,
+			auto_clear=auto_clear,
+			direct_io=direct_io,
+		)
+
+	def __del__(self):
+		loop_detach(self.device)

builder/lib/mount.py

@@ -0,0 +1,378 @@
+import io
+import os
+import libmount
+from typing import Self
+from logging import getLogger
+from builder.lib.blkid import Blkid
+from builder.lib.serializable import SerializableDict,SerializableList
+log = getLogger(__name__)
+
+virtual_fs = [
+	"sysfs", "tmpfs", "proc", "cgroup", "cgroup2", "hugetlbfs",
+	"devtmpfs", "binfmt_misc", "configfs", "debugfs", "tracefs", "cpuset",
+	"securityfs", "sockfs", "bpf", "pipefs", "ramfs", "binder", "bdev",
+	"devpts", "autofs", "efivarfs", "mqueue", "resctrl", "pstore", "fusectl",
+]
+
+real_fs = [
+	"reiserfs", "ext4", "ext3", "ext2", "cramfs", "squashfs", "minix", "vfat",
+	"msdos", "exfat", "iso9660", "hfsplus", "gfs2meta", "ecryptfs", "ntfs3", "ufs",
+	"jffs2", "ubifs", "affs", "romfs", "ocfs2_dlmfs", "omfs", "jfs", "xfs", "nilfs2",
+	"befs", "ocfs2", "btrfs", "hfs", "gfs2", "udf", "f2fs", "bcachefs", "erofs",
+]
+
+
+class MountPoint(SerializableDict):
+	device: str = None
+	source: str = None
+	target: str = None
+	fstype: str = None
+	option: list[str] = []
+	fs_freq: int = 0
+	fs_passno: int = 0
+
+	@property
+	def virtual(self) -> bool:
+		if self.fstype:
+			if self.fstype in virtual_fs: return True
+			if self.fstype in real_fs: return False
+		if self.device:
+			if self.device.startswith(os.sep): return False
+		if self.source:
+			if self.source.startswith(os.sep): return False
+			if "=" in self.source: return False
+		return True
+
+	@property
+	def level(self) -> int:
+		if self.target is None: return 0
+		path = os.path.realpath(self.target)
+		cnt = path.count(os.sep)
+		if (
+			path.startswith(os.sep) and
+			not path.endswith(os.sep)
+		): cnt += 1
+		return cnt
+
+	@property
+	def options(self):
+		return ",".join(self.option)
+
+	@options.setter
+	def options(self, val: str):
+		self.option = val.split(",")
+
+	def get_option(self, opt: str) -> str | None:
+		if opt in self.option:
+			return opt
+		if "=" not in opt:
+			start = f"{opt}="
+			values = (o for o in self.option if o.startswith(start))
+			return next(values, None)
+		return None
+
+	def remove_option(self, opt: str | list[str]) -> Self:
+		if type(opt) is list[str]:
+			for o in opt:
+				self.remove_option(o)
+			return
+		if opt in self.option:
+			self.option.remove(opt)
+			return
+		if "=" in opt: opt = opt[:opt.find("=")]
+		val = self.get_option(opt)
+		if val:
+			self.remove_option(val)
+		return self
+
+	def exclusive_option(self, opt: str, opt1: str, opt2: str) -> Self:
+		if opt == opt1 or opt == opt2:
+			self.remove_option(opt1)
+		return self
+
+	def add_option(self, opt: str) -> Self:
+		self.exclusive_option(opt, "ro", "rw")
+		self.exclusive_option(opt, "dev", "nodev")
+		self.exclusive_option(opt, "suid", "nosuid")
+		self.exclusive_option(opt, "exec", "noexec")
+		self.exclusive_option(opt, "relatime", "noatime")
+		self.remove_option(opt)
+		if opt not in self.option:
+			self.option.append(opt)
+		return self
+
+	def ro(self) -> Self:
+		self.add_option("ro")
+		return self
+
+	def rw(self) -> Self:
+		self.add_option("rw")
+		return self
+
+	def have_source(self) -> bool: return self.source and self.source != "none"
+	def have_target(self) -> bool: return self.target and self.target != "none"
+	def have_fstype(self) -> bool: return self.fstype and self.fstype != "none"
+	def have_options(self) -> bool: return len(self.option) > 0
+
+	def update_device(self):
+		if self.virtual or self.source is None: return
+		if self.source.startswith(os.sep):
+			self.device = self.source
+			return
+		if "=" in self.source:
+			self.device = Blkid().evaluate_tag(self.source)
+			return
+
+	def persist_source(self, tag: str = "UUID"):
+		if self.virtual: return
+		if self.device is None: self.update_device()
+		if self.device is None: return
+		tag = tag.upper()
+		if tag == "PATH":
+			self.source = self.device
+			return
+		self.source = Blkid().get_tag_value(
+			None, tag, self.device
+		)
+
+	def tolibmount(self) -> libmount.Context:
+		mnt = libmount.Context()
+		mnt.target = self.target
+		if self.have_source(): mnt.source = self.source
+		if self.have_fstype(): mnt.fstype = self.fstype
+		if self.have_options(): mnt.options = self.options
+		return mnt
+
+	def ismount(self) -> bool:
+		return os.path.ismount(self.target)
+
+	def mount(self) -> Self:
+		if not os.path.exists(self.target):
+			os.makedirs(self.target, mode=0o0755)
+		if not os.path.ismount(self.target):
+			log.debug(
+				f"try mount {self.source} "
+				f"to {self.target} "
+				f"as {self.fstype} "
+				f"with {self.options}"
+			)
+			lib = self.tolibmount()
+			lib.mount()
+		return self
+
+	def umount(self) -> Self:
+		if os.path.ismount(self.target):
+			lib = self.tolibmount()
+			lib.umount()
+			log.debug(f"umount {self.target} successfuly")
+		return self
+
+	def from_mount_line(self, line: str) -> Self:
+		d = line.split()
+		if len(d) != 6:
+			raise ValueError("bad mount line")
+		self.source = d[0]
+		self.target = d[1]
+		self.fstype = d[2]
+		self.options = d[3]
+		self.fs_freq = int(d[4])
+		self.fs_passno = int(d[5])
+		return self
+
+	def to_mount_line(self) -> str:
+		self.fixup()
+		fields = [
+			self.source,
+			self.target,
+			self.fstype,
+			self.options,
+			str(self.fs_freq),
+			str(self.fs_passno),
+		]
+		return " ".join(fields)
+
+	def fixup(self) -> Self:
+		if not self.have_source(): self.source = "none"
+		if not self.have_target(): self.target = "none"
+		if not self.have_fstype(): self.fstype = "none"
+		if not self.have_options(): self.options = "defaults"
+		return self
+
+	def clone(self) -> Self:
+		mnt = MountPoint()
+		mnt.device = self.device
+		mnt.source = self.source
+		mnt.target = self.target
+		mnt.fstype = self.fstype
+		mnt.option = self.option
+		mnt.fs_freq = self.fs_freq
+		mnt.fs_passno = self.fs_passno
+		return mnt
+
+	def __init__(
+		self,
+		data: dict = None,
+		device: str = None,
+		source: str = None,
+		target: str = None,
+		fstype: str = None,
+		options: str = None,
+		option: list[str] = None,
+		fs_freq: int = None,
+		fs_passno: int = None,
+	):
+		super().__init__()
+		self.device = None
+		self.source = None
+		self.target = None
+		self.fstype = None
+		self.option = []
+		self.fs_freq = 0
+		self.fs_passno = 0
+		if data: self.from_dict(data)
+		if device: self.device = device
+		if source: self.source = source
+		if target: self.target = target
+		if fstype: self.fstype = fstype
+		if options: self.options = options
+		if option: self.option = option
+		if fs_freq: self.fs_freq = fs_freq
+		if fs_passno: self.fs_passno = fs_passno
+
+	@staticmethod
+	def parse_mount_line(line: str):
+		return MountPoint().from_mount_line(line)
+
+
+class MountTab(list[MountPoint], SerializableList):
+	def find_folder(self, folder: str) -> Self:
+		root = os.path.realpath(folder)
+		return [mnt for mnt in self if mnt.target.startswith(root)]
+
+	def find_target(self, target: str) -> Self: return [mnt for mnt in self if mnt.target == target]
+	def find_source(self, source: str) -> Self: return [mnt for mnt in self if mnt.source == source]
+	def find_fstype(self, fstype: str) -> Self: return [mnt for mnt in self if mnt.fstype == fstype]
+
+	def clone(self) -> Self:
+		mnts = MountTab()
+		for mnt in self:
+			mnts.append(mnt.clone())
+		return mnts
+
+	def mount_all(self, prefix: str = None, mkdir: bool = False) -> Self:
+		for mnt in self:
+			m = mnt.clone()
+			if prefix:
+				if m.target == "/": m.target = prefix
+				else: m.target = os.path.join(prefix, m.target[1:])
+			if mkdir and not os.path.exists(m.target):
+				os.makedirs(m.target, mode=0o0755)
+			m.mount()
+		return self
+
+	def resort(self):
+		self.sort(key=lambda x: (x.level, len(x.target), x.target))
+
+	def strip_virtual(self) -> Self:
+		for mnt in self:
+			if mnt.virtual:
+				self.remove(mnt)
+		return self
+
+	def to_list(self) -> list:
+		return self
+
+	def from_list(self, o: list) -> Self:
+		self.clear()
+		for i in o: self.append(MountPoint().from_dict(i))
+		return self
+
+	def to_mount_file(self, linesep=os.linesep) -> str:
+		ret = "# Source Target FS-Type Options FS-Freq FS-Dump"
+		ret += linesep
+		for point in self:
+			ret += point.to_mount_line()
+			ret += linesep
+		return ret
+
+	def write_mount_file(self, fp: io.TextIOWrapper):
+		fp.write(self.to_mount_file())
+		fp.flush()
+
+	def create_mount_file(self, path: str) -> Self:
+		with open(path, "w") as f:
+			self.write_mount_file(f)
+		return self
+
+	def load_mount_fp(self, fp: io.TextIOWrapper) -> Self:
+		for line in fp:
+			if line is None: break
+			line = line.strip()
+			if len(line) <= 0: continue
+			if line.startswith("#"): continue
+			mnt = MountPoint.parse_mount_line(line)
+			self.append(mnt)
+		return self
+
+	def load_mount_file(self, file: str) -> Self:
+		with open(file, "r") as f:
+			self.load_mount_fp(f)
+		return self
+
+	def load_fstab(self) -> Self:
+		self.load_mount_file("/etc/fstab")
+		return self
+
+	def load_mounts(self) -> Self:
+		self.load_mount_file("/proc/mounts")
+		return self
+
+	def load_mounts_pid(self, pid: int) -> Self:
+		path = f"/proc/{pid}/mounts"
+		self.load_mount_file(path)
+		return self
+
+	def from_mount_fp(self, fp: io.TextIOWrapper) -> Self:
+		self.clear()
+		self.load_mount_fp(fp)
+		return self
+
+	def from_mount_file(self, file: str) -> Self:
+		self.clear()
+		self.load_mount_file(file)
+		return self
+
+	def from_fstab(self, ) -> Self:
+		self.clear()
+		self.load_fstab()
+		return self
+
+	def from_mounts(self, ) -> Self:
+		self.clear()
+		self.load_mounts()
+		return self
+
+	def from_mounts_pid(self, pid: int) -> Self:
+		self.clear()
+		self.load_mounts_pid(pid)
+		return self
+
+	@staticmethod
+	def parse_mount_fp(fp: io.TextIOWrapper):
+		return MountTab().from_mount_fp(fp)
+
+	@staticmethod
+	def parse_mount_file(file: str):
+		return MountTab().from_mount_file(file)
+
+	@staticmethod
+	def parse_fstab():
+		return MountTab().from_fstab()
+
+	@staticmethod
+	def parse_mounts():
+		return MountTab().from_mounts()
+
+	@staticmethod
+	def parse_mounts_pid(pid: int):
+		return MountTab().from_mounts_pid(pid)

builder/lib/serializable.py

@@ -0,0 +1,106 @@
+from typing import Self
+
+
+class Serializable:
+	def serialize(self) -> None | bool | int | float | str | tuple | list | dict: pass
+	def unserialize(self, value: None | bool | int | float | str | tuple | list | dict): pass
+
+	def to_json(
+		self, *,
+		skipkeys=False,
+		ensure_ascii=True,
+		check_circular=True,
+		allow_nan=True,
+		cls=None,
+		indent=None,
+		separators=None,
+		default=None,
+		sort_keys=False,
+		**kw
+	) -> str:
+		from builder.lib.json import dumps
+		return dumps(
+			self.serialize(),
+			skipkeys=skipkeys,
+			ensure_ascii=ensure_ascii,
+			check_circular=check_circular,
+			allow_nan=allow_nan,
+			cls=cls,
+			indent=indent,
+			separators=separators,
+			default=default,
+			sort_keys=sort_keys,
+			**kw
+		)
+
+	def to_yaml(self) -> str:
+		from yaml import safe_dump_all
+		return safe_dump_all(self.serialize())
+
+	@property
+	def class_path(self) -> str:
+		ret = self.__class__.__module__ or ""
+		if len(ret) > 0: ret += "."
+		ret += self.__class__.__qualname__
+		return ret
+
+	def __str__(self) -> str:
+		j = self.to_json(indent=2).strip()
+		return f"{self.class_path}({j})"
+
+	def __repr__(self) -> str:
+		j = self.to_json().strip()
+		return f"{self.class_path}({j})"
+
+
+class SerializableDict(Serializable):
+	def to_dict(self) -> dict:
+		ret = {}
+		for key in dir(self):
+			val = getattr(self, key)
+			if key.startswith("__"): continue
+			if key.endswith("__"): continue
+			if callable(val): continue
+			ret[key] = val
+		return ret
+
+	def from_dict(self, o: dict) -> Self:
+		for key in o:
+			val = o[key]
+			if key.startswith("__"): continue
+			if key.endswith("__"): continue
+			if callable(val): continue
+			setattr(self, key, val)
+		return self
+
+	def serialize(self) -> dict:
+		return self.to_dict()
+
+	def unserialize(self, value: dict):
+		self.from_dict(value)
+
+	def __dict__(self) -> dict:
+		return self.to_dict()
+
+	def __init__(self, o: dict = None):
+		if o: self.from_dict(o)
+
+
+class SerializableList(Serializable):
+	def to_list(self) -> list:
+		pass
+
+	def from_list(self, o: list) -> Self:
+		pass
+
+	def serialize(self) -> list:
+		return self.to_list()
+
+	def unserialize(self, value: list):
+		self.from_list(value)
+
+	def __list__(self) -> list:
+		return self.to_list()
+
+	def __init__(self, o: list = None):
+		if o: self.from_list(o)

builder/lib/shadow.py

@@ -0,0 +1,261 @@
+import io
+from typing import Self
+from builder.lib.serializable import SerializableDict, SerializableList
+
+
+def zero2empty(num: int) -> str:
+	return str(num) if num !=0 else ""
+
+
+def none2empty(val: str) -> str:
+	return val if val else ""
+
+
+class UserEntry(SerializableDict):
+	name: str = None
+
+	def from_line(self, line: str): pass
+
+	def to_line(self) -> str: pass
+
+
+class UserFile(SerializableList):
+	def load_line(self, line: str): pass
+
+	def unload(self): pass
+
+	def load_str(self, content: str | list[str]) -> Self:
+		if type(content) is str: 
+			content = content.split("\n")
+		for line in content:
+			line = line.strip()
+			if line.startswith("#"): continue
+			if len(line) <= 0: continue
+			self.load_line(line)
+		return self
+
+	def load_fp(self, fp: io.TextIOWrapper) -> Self:
+		self.load_str(fp.readlines())
+		return self
+
+	def load_file(self, file: str) -> Self:
+		with open(file, "r") as f:
+			self.load_fp(f)
+		return self
+
+	def from_str(self, content: str) -> Self:
+		self.unload()
+		self.load_str(content)
+		return self
+
+	def from_fp(self, fp: io.TextIOWrapper) -> Self:
+		self.unload()
+		self.load_fp(fp)
+		return self
+
+	def from_file(self, file: str) -> Self:
+		self.unload()
+		self.load_file(file)
+		return self
+
+
+class ShadowEntry(UserEntry):
+	name: str = None
+	password: str = None
+	last_change: int = 0
+	min_age: int = 0
+	max_age: int = 0
+	warning_period: int = 0
+	inactivity_period: int = 0
+	expiration: int = 0
+
+	def from_line(self, line: str):
+		values = line.split(":")
+		if len(values) != 8:
+			raise ValueError("fields mismatch")
+		self.name = values[0]
+		self.password = values[1]
+		self.last_change = int(values[2]) if len(values[2]) > 0 else 0
+		self.min_age = int(values[3]) if len(values[3]) > 0 else 0
+		self.max_age = int(values[4]) if len(values[4]) > 0 else 0
+		self.warning_period = int(values[5]) if len(values[5]) > 0 else 0
+		self.inactivity_period = int(values[6]) if len(values[6]) > 0 else 0
+		self.expiration = int(values[7]) if len(values[7]) > 0 else 0
+
+	def to_line(self) -> str:
+		values = [
+			none2empty(self.name),
+			none2empty(self.password),
+			zero2empty(self.last_change),
+			zero2empty(self.min_age),
+			zero2empty(self.max_age),
+			zero2empty(self.warning_period),
+			zero2empty(self.inactivity_period),
+			zero2empty(self.expiration),
+		]
+		return (":".join(values)) + "\n"
+
+
+class GshadowEntry(UserEntry):
+	name: str = None
+	password: str = None
+	admins: list[str] = None
+	members: list[str] = None
+
+	@property
+	def admin(self):
+		return ",".join(self.admins)
+
+	@admin.setter
+	def admin(self, val: str):
+		self.admins = val.split(",")
+
+	@property
+	def member(self):
+		return ",".join(self.members)
+
+	@member.setter
+	def member(self, val: str):
+		self.members = val.split(",")
+
+	def from_line(self, line: str):
+		values = line.split(":")
+		if len(values) != 4:
+			raise ValueError("fields mismatch")
+		self.name = values[0]
+		self.password = values[1]
+		self.admin = values[2]
+		self.member = values[3]
+
+	def to_line(self) -> str:
+		values = [
+			none2empty(self.name),
+			none2empty(self.password),
+			none2empty(self.admin),
+			none2empty(self.member),
+		]
+		return (":".join(values)) + "\n"
+
+
+class PasswdEntry(UserEntry):
+	name: str = None
+	password: str = None
+	uid: int = -1
+	gid: int = -1
+	comment: str = None
+	home: str = None
+	shell: str = None
+
+	def from_line(self, line: str):
+		values = line.split(":")
+		if len(values) != 7:
+			raise ValueError("fields mismatch")
+		self.name = values[0]
+		self.password = values[1]
+		self.uid = int(values[2])
+		self.gid = int(values[3])
+		self.comment = values[4]
+		self.home = values[5]
+		self.shell = values[6]
+
+	def to_line(self) -> str:
+		values = [
+			none2empty(self.name),
+			none2empty(self.password),
+			str(self.uid),
+			str(self.gid),
+			none2empty(self.comment),
+			none2empty(self.home),
+			none2empty(self.shell),
+		]
+		return (":".join(values)) + "\n"
+
+
+class GroupEntry(UserEntry):
+	name: str = None
+	password: str = None
+	gid: int = -1
+	users: list[str] = None
+
+	@property
+	def user(self):
+		return ",".join(self.users)
+
+	@user.setter
+	def user(self, val: str):
+		self.users = val.split(",")
+
+	def from_line(self, line: str):
+		values = line.split(":")
+		if len(values) != 4:
+			raise ValueError("fields mismatch")
+		self.name = values[0]
+		self.password = values[1]
+		self.gid = int(values[2])
+		self.user = values[3]
+
+	def to_line(self) -> str:
+		values = [
+			none2empty(self.name),
+			none2empty(self.password),
+			str(self.gid),
+			none2empty(self.user),
+		]
+		return (":".join(values)) + "\n"
+
+
+class ShadowFile(list[ShadowEntry], UserFile):
+	def unload(self): self.clear()
+
+	def load_line(self, line: str):
+		ent = ShadowEntry()
+		ent.from_line(line)
+		self.append(ent)
+	
+	def lookup_name(self, name: str) -> ShadowEntry:
+		return next((e for e in self if e.name == name), None)
+
+
+class GshadowFile(list[GshadowEntry], UserFile):
+	def unload(self): self.clear()
+
+	def load_line(self, line: str):
+		ent = GshadowEntry()
+		ent.from_line(line)
+		self.append(ent)
+	
+	def lookup_name(self, name: str) -> GshadowEntry:
+		return next((e for e in self if e.name == name), None)
+
+
+class PasswdFile(list[PasswdEntry], UserFile):
+	def unload(self): self.clear()
+
+	def load_line(self, line: str):
+		ent = PasswdEntry()
+		ent.from_line(line)
+		self.append(ent)
+	
+	def lookup_name(self, name: str) -> PasswdEntry:
+		return next((e for e in self if e.name == name), None)
+
+	def lookup_uid(self, uid: int) -> PasswdEntry:
+		return next((e for e in self if e.uid == uid), None)
+
+	def lookup_gid(self, gid: int) -> PasswdEntry:
+		return next((e for e in self if e.gid == gid), None)
+
+
+class GroupFile(list[GroupEntry], UserFile):
+	def unload(self): self.clear()
+
+	def load_line(self, line: str):
+		ent = GroupEntry()
+		ent.from_line(line)
+		self.append(ent)
+	
+	def lookup_name(self, name: str) -> GroupEntry:
+		return next((e for e in self if e.name == name), None)
+
+	def lookup_gid(self, gid: int) -> GroupEntry:
+		return next((e for e in self if e.gid == gid), None)

builder/lib/subscript.py

@@ -0,0 +1,143 @@
+from builder.lib.utils import str_find_all
+from logging import getLogger
+log = getLogger(__name__)
+
+
+class SubScriptValue:
+	content: str = None
+	original: str = None
+	incomplete: bool = False
+
+	def __str__(self): return self.content
+	def __repr__(self): return self.content
+
+
+def dict_get(key: str, root: dict):
+	def get_token(node, k):
+		nt = type(node)
+		if nt is list: return node[int(k)]
+		elif nt is tuple: return node[int(k)]
+		elif nt is dict: return node[k]
+		else: raise KeyError(f"unsupported get in {nt.__name__}")
+	keys = ["[", "."]
+	node = root
+	while len(key) > 0:
+		if key[0] == "[":
+			p = key.find("]", 1)
+			if p < 0: raise ValueError("missing ]")
+			node = get_token(node, key[1:p])
+			key = key[p + 1:]
+			continue
+		if key[0] == ".":
+			key = key[1:]
+			continue
+		p = str_find_all(key, keys)
+		k = key[:p] if p >= 0 else key
+		node = get_token(node, k)
+		if p < 0: return node
+		key = key[p + 1:]
+	return node
+
+
+class SubScript:
+	root: dict
+	resolved: list[str]
+	unresolved: list[str]
+	count: int
+
+	def resolve_token(self, token: str) -> SubScriptValue:
+		val = SubScriptValue()
+		val.original = token
+		lstr = False
+		if token[0] == "@":
+			token = token[1:]
+			lstr = True
+		if token not in self.unresolved:
+			self.unresolved.append(token)
+		value = dict_get(token, self.root)
+		if token not in self.resolved:
+			val.incomplete = True
+			return val
+		if lstr:
+			vt = type(value)
+			if vt is list: value = " ".join(value)
+			else: raise ValueError(f"@ not support for {vt.__name__}")
+		self.unresolved.remove(token)
+		val.content = value
+		return val
+
+	def process(self, content: str, lvl: str) -> SubScriptValue:
+		last = 0
+		ret = SubScriptValue()
+		ret.original = content
+		ret.content = content
+		while last < len(content):
+			last = content.find("$", last)
+			if last < 0: break
+			if content[last:last+2] == "$$":
+				last += 2
+				continue
+			if len(content) <= last + 2 or content[last + 1] != "{":
+				raise ValueError(f"unexpected token in subscript at {lvl}")
+			tp = content.find("}", last + 1)
+			if tp < 0: raise ValueError(f"missing }} in subscript at {lvl}")
+			token = content[last + 2: tp]
+			val = self.resolve_token(token)
+			if val.incomplete:
+				ret.incomplete = True
+				return ret
+			value = val.content
+			content = content[:last] + value + content[tp + 1:]
+			last += len(value)
+		ret.content = content
+		return ret
+
+	def parse_rec(self, node: dict | list, level: str) -> bool:
+		def process_one(key, lvl):
+			value = node[key]
+			vt = type(value)
+			if vt is dict or vt is list:
+				if not self.parse_rec(value, lvl):
+					return False
+			elif vt is str:
+				val = self.process(value, lvl)
+				if val.incomplete:
+					return False
+				node[key] = val.content
+			self.resolved.append(lvl)
+			self.count += 1
+			return True
+		ret = True
+		nt = type(node)
+		if nt is dict:
+			for key in node:
+				lvl = f"{level}.{key}" if len(level) > 0 else key
+				if lvl in self.resolved: continue
+				if not process_one(key, lvl): ret = False
+		elif nt is list or nt is tuple:
+			for idx in range(len(node)):
+				lvl = f"{level}[{idx}]"
+				if lvl in self.resolved: continue
+				if not process_one(idx, lvl): ret = False
+		else: raise ValueError(f"unknown input value at {level}")
+		return ret
+
+	def dump_unresolved(self):
+		for key in self.unresolved:
+			log.warning(f"value {key} unresolved")
+
+	def parse(self, root: dict):
+		self.root = root
+		while True:
+			self.count = 0
+			ret = self.parse_rec(root, "")
+			if ret: break
+			if self.count <= 0:
+				self.dump_unresolved()
+				raise ValueError("some value cannot be resolved")
+		self.dump_unresolved()
+
+	def __init__(self):
+		self.resolved = []
+		self.unresolved = []
+		self.count = 0

builder/lib/utils.py

@@ -0,0 +1,129 @@
+import os
+import io
+import shlex
+import shutil
+import typing
+from logging import getLogger
+log = getLogger(__name__)
+
+
+def str_find_all(
+	orig: str,
+	keys: list[str] | tuple[str] | str,
+	start: typing.SupportsIndex | None = None,
+	end: typing.SupportsIndex | None = None,
+) -> int:
+	if type(keys) is str: return orig.find(keys, start, end)
+	result: list[int] = [orig.find(key, start, end) for key in keys]
+	while -1 in result: result.remove(-1)
+	return min(result, default=-1)
+
+
+def parse_cmd_args(cmd: str|list[str]) -> list[str]:
+	if type(cmd) is str: return shlex.split(cmd)
+	elif type(cmd) is list: return cmd
+	else: raise TypeError("unknown type for cmd")
+
+
+def find_external(name: str) -> str:
+	"""
+	Find a linux executable path
+	find_external("systemctl") = "/usr/bin/systemctl"
+	find_external("service") = None
+	"""
+	return shutil.which(name)
+
+
+def have_external(name: str) -> bool:
+	"""
+	Is a command in PATH
+	find_external("systemctl") = True
+	find_external("service") = False
+	"""
+	return shutil.which(name) is not None
+
+
+def fd_get_path(fd: int) -> str | None:
+	"""
+	Get file path by FD
+	fd_get_path(1) = "/dev/pts/0"
+	"""
+	link = f"/proc/self/fd/{fd}"
+	if not os.path.exists(link): return None
+	path = os.readlink(link)
+	if not path.startswith("/"): return None
+	if path.startswith("/memfd:"): return None
+	if path.endswith(" (deleted)"): return None
+	if not os.path.exists(path): return None
+	return path
+
+
+def size_to_bytes(value: str | int, alt_units: dict = None) -> int:
+	units = {
+		'b': 0.125, 'bit': 0.125, 'bits': 0.125, 'Bit': 0.125, 'Bits': 0.125,
+		'B': 1, 'Byte': 1, 'Bytes': 1, 'bytes': 1, 'byte': 1,
+		'k': 10**3, 'kB': 10**3, 'kb': 10**3, 'K': 2**10, 'KB': 2**10, 'KiB': 2**10,
+		'm': 10**6, 'mB': 10**6, 'mb': 10**6, 'M': 2**20, 'MB': 2**20, 'MiB': 2**20,
+		'g': 10**9, 'gB': 10**9, 'gb': 10**9, 'G': 2**30, 'GB': 2**30, 'GiB': 2**30,
+		't': 10**12, 'tB': 10**12, 'tb': 10**12, 'T': 2**40, 'TB': 2**40, 'TiB': 2**40,
+		'p': 10**15, 'pB': 10**15, 'pb': 10**15, 'P': 2**50, 'PB': 2**50, 'PiB': 2**50,
+		'e': 10**15, 'eB': 10**15, 'eb': 10**15, 'E': 2**50, 'EB': 2**50, 'EiB': 2**50,
+		'z': 10**15, 'zB': 10**15, 'zb': 10**15, 'Z': 2**50, 'ZB': 2**50, 'ZiB': 2**50,
+		'y': 10**15, 'yB': 10**15, 'yb': 10**15, 'Y': 2**50, 'YB': 2**50, 'YiB': 2**50,
+	}
+	if type(value) is int: return value
+	elif type(value) is str:
+		if alt_units: units.update(alt_units)
+		matches = {unit: len(unit) for unit in units if value.endswith(unit)}
+		max_unit = max(matches.values(), default=0)
+		unit = next((unit for unit in matches.keys() if matches[unit] == max_unit), None)
+		mul = units[unit] if unit else 1.0
+		return int(float(value[:len(value)-max_unit].strip()) * mul)
+	else: raise TypeError("bad size value")
+
+
+def bytes_pad(b: bytes, size: int, trunc: bool = False, pad: bytes = b'\0') -> bytes:
+	l = len(b)
+	if l > size and trunc: b = b[:size]
+	if l < size: b += pad * (size - l)
+	return b
+
+
+def round_up(value: int, align: int) -> int:
+	return (value + align - 1) & ~(align - 1)
+
+
+def round_down(value: int, align: int) -> int:
+	return value & ~(align - 1)
+
+
+def open_config(path: str, mode=0o0644) -> io.TextIOWrapper:
+	dist = f"{path}.dist"
+	have_dist = False
+	if os.path.exists(dist):
+		have_dist = True
+	elif os.path.exists(path):
+		shutil.move(path, dist)
+		have_dist = True
+	flags = os.O_RDWR | os.O_CREAT | os.O_TRUNC
+	fd = os.open(path=path, flags=flags, mode=mode)
+	if fd < 0: raise IOError(f"open {path} failed")
+	try:
+		fp = os.fdopen(fd, "w")
+		fp.write("# This file is auto generated by arch-image-builder\n")
+		if have_dist:
+			fn = os.path.basename(dist)
+			fp.write(f"# Original file is {fn}\n")
+		fp.write("\n")
+		fp.flush()
+	except:
+		os.close(fd)
+		raise
+	return fp
+
+
+def path_to_name(path: str) -> str:
+	if path == "/": return "rootfs"
+	if path.startswith("/"): path = path[1:]
+	if len(path) <= 0: return "empty"
+	return path.replace("/", "-")

builder/main.py

@@ -0,0 +1,77 @@
+import os
+import logging
+from sys import stdout
+from locale import setlocale, LC_ALL
+from argparse import ArgumentParser
+from builder.build import bootstrap
+from builder.lib import config, utils
+from builder.lib.context import ArchBuilderContext
+log = logging.getLogger(__name__)
+
+
+def parse_arguments(ctx: ArchBuilderContext):
+	parser = ArgumentParser(
+		prog="arch-image-builder",
+		description="Build flashable image for Arch Linux",
+	)
+	parser.add_argument("-c", "--config",      help="Select config to build", required=True, action='append')
+	parser.add_argument("-o", "--workspace",   help="Set workspace for builder", default=ctx.work)
+	parser.add_argument("-d", "--debug",       help="Enable debug logging", default=False, action='store_true')
+	parser.add_argument("-G", "--no-gpgcheck", help="Disable GPG check", default=False, action='store_true')
+	parser.add_argument("-r", "--repack",      help="Repack rootfs only", default=False, action='store_true')
+	args = parser.parse_args()
+
+	# debug logging
+	if args.debug:
+		logging.root.setLevel(logging.DEBUG)
+		log.debug("enabled debug logging")
+
+	if args.no_gpgcheck: ctx.gpgcheck = False
+	if args.repack: ctx.repack = True
+
+	# collect configs path
+	configs = []
+	for conf in args.config:
+		configs.extend(conf.split(","))
+
+	# load and populate configs
+	config.load_configs(ctx, configs)
+	config.populate_config(ctx)
+
+	# build folder: {TOP}/build/{TARGET}
+	ctx.work = os.path.realpath(os.path.join(args.workspace, ctx.target))
+
+
+def init_environment():
+	# set user agent for pacman (some mirrors requires)
+	os.environ["HTTP_USER_AGENT"] = "arch-image-builder(pacman) pyalpm"
+
+	# set to default language to avoid problems
+	os.environ["LANG"] = "C"
+	os.environ["LANGUAGE"] = "C"
+	os.environ["LC_ALL"] = "C"
+	setlocale(LC_ALL, "C")
+
+
+def check_system():
+	# why not root?
+	if os.getuid() != 0:
+		raise PermissionError("this tool can only run as root")
+
+	# always need pacman
+	if not utils.have_external("pacman"):
+		raise FileNotFoundError("pacman not found")
+
+
+def main():
+	logging.basicConfig(stream=stdout, level=logging.INFO)
+	check_system()
+	init_environment()
+	ctx = ArchBuilderContext()
+	ctx.dir = os.path.realpath(os.path.join(os.path.dirname(__file__), os.path.pardir))
+	ctx.work = os.path.realpath(os.path.join(ctx.dir, "build"))
+	parse_arguments(ctx)
+	log.info(f"source tree folder: {ctx.dir}")
+	log.info(f"workspace folder:   {ctx.work}")
+	log.info(f"build target name:  {ctx.target}")
+	bootstrap.build_rootfs(ctx)

configs/common/alarm-user.yaml

@@ -0,0 +1,8 @@
+sysconf:
+  user:
+  - name: alarm
+    password: alarm
+    groups: wheel
+  - name: root
+    uid: 0
+    password: root

configs/common/arch-user.yaml

@@ -0,0 +1,8 @@
+sysconf:
+  user:
+  - name: arch
+    password: arch
+    groups: wheel
+  - name: root
+    uid: 0
+    password: root

configs/common/wheel-nopasswd.yaml

@@ -0,0 +1,16 @@
+filesystem:
+  files:
+  - path: /etc/polkit-1/rules.d/99-wheel.rules
+    mode: 0640
+    content: |
+      polkit.addRule(function(action,subject){
+        if(subject.isInGroup("wheel"))
+          return polkit.Result.YES;
+      });
+  - path: /etc/sudoers.d/wheel
+    mode: 0640
+    content: |
+      %wheel ALL=(ALL:ALL) NOPASSWD: ALL
+pacman:
+  install:
+  - sudo

configs/desktop/gnome.yaml

@@ -0,0 +1,9 @@
+pacman:
+  install:
+  - gnome
+systemd:
+  default: graphical.target
+  enable:
+  - gdm.service
++also:
+- packages/network-manager

configs/device/ayn-odin2.yaml

@@ -0,0 +1,79 @@
+name: AYN Odin 2
+arch: aarch64
+soc: qcs8550
+device: ayn-odin2
+device_suffix: -hypdtbo
+pacman:
+  install:
+  - wireless-regdb
+  - linux-firmware-ayn-odin2
+  - linux-ayn-odin2-edge
+  - mesa-qcom-git
+  - vulkan-tools
+  - xcb-util-keysyms
+systemd:
+  disable:
+  - rmtfs.service
+filesystem:
+  files:
+  - path: /etc/udev/rules.d/99-${device}.rules
+    content: |
+      SUBSYSTEM=="input", ATTRS{name}=="Ayn Odin2 Gamepad", MODE="0666", ENV{ID_INPUT_MOUSE}="0", ENV{ID_INPUT_JOYSTICK}="1"
+  - path: /etc/systemd/logind.conf.d/power-key-lock.conf
+    content: |
+      [Login]
+      HandlePowerKey=lock
+  - path: /etc/systemd/system.conf.d/show-status.conf
+    content: |
+      [Manager]
+      ShowStatus=yes
+  - path: /etc/systemd/sleep.conf.d/no-suspend.conf
+    content: |
+      [Sleep]
+      AllowSuspend=no
+      AllowHibernation=no
+      AllowSuspendThenHibernate=no
+  - path: /etc/systemd/resolved.conf.d/no-mdns.conf
+    content: |
+      [Resolve]
+      MulticastDNS=no
+      LLMNR=no
+sysconf:
+  chassis: handset
+  environments:
+    __GLX_VENDOR_LIBRARY_NAME: mesa
+    MESA_LOADER_DRIVER_OVERRIDE: zink
+    GALLIUM_DRIVER: zink
+kernel:
+  cmdline:
+  - clk_ignore_unused
+  - pd_ignore_unused
+  - panic=30
+  - loglevel=8
+  - allow_mismatched_32bit_el0
+mkinitcpio:
+  files:
+  - /usr/lib/firmware/qcom/sm8550/ayn/odin2/adsp.mbn
+  - /usr/lib/firmware/qcom/sm8550/ayn/odin2/adsp_dtb.mbn
+  - /usr/lib/firmware/qcom/sm8550/ayn/odin2/cdsp.mbn
+  - /usr/lib/firmware/qcom/sm8550/ayn/odin2/cdsp_dtb.mbn
+  - /usr/lib/firmware/ath12k/WCN7850/hw2.0/amss.bin
+  - /usr/lib/firmware/ath12k/WCN7850/hw2.0/regdb.bin
+  - /usr/lib/firmware/ath12k/WCN7850/hw2.0/board-2.bin
+  - /usr/lib/firmware/ath12k/WCN7850/hw2.0/m3.bin
+  - /usr/lib/firmware/qca/hmtbtfw20.tlv
+  - /usr/lib/firmware/qca/hmtnv20.bin
+  - /usr/lib/firmware/qcom/sm8550/ayn/odin2/a740_zap.mbn
+  - /usr/lib/firmware/qcom/gmu_gen70200.bin
+  - /usr/lib/firmware/qcom/a740_sqe.fw
+  - /usr/lib/firmware/regulatory.db.p7s
+  - /usr/lib/firmware/regulatory.db
++also:
+- os/archlinuxarm
+- repo/archlinuxcn
+- repo/renegade-project
+- device/qcom
+- packages/systemd-gadget
+- packages/openssh
+- packages/editor
+- packages/bluez

configs/device/qcom.yaml

@@ -0,0 +1,15 @@
+platform: qcom
+device_suffix:
+pacman:
+  install:
+  - qbootctl
+  - qrtr
+  - rmtfs
+  - tqftpserv
+  - pd-mapper
+systemd:
+  enable:
+  - rmtfs.service
+  - qrtr-ns.service
+  - pd-mapper.service
+  - tqftpserv.service

configs/device/x86_64.yaml

@@ -0,0 +1,10 @@
+name: Generic x86_64 compatible PC
+arch: x86_64
+pacman:
+  install:
+  - linux
+  - fastfetch
++also:
+- os/archlinux
+- packages/openssh
+- packages/systemd-networkd

configs/locale/zh-cn.yaml

@@ -0,0 +1,39 @@
+locale:
+  enable:
+  - "zh_CN.UTF-8 UTF-8"
+  - "en_US.UTF-8 UTF-8"
+  default: zh_CN.UTF-8
+filesystem:
+  files:
+  - path: /etc/conf.d/wireless-regdom
+    content: |
+      WIRELESS_REGDOM="CN"
+  - path: /etc/systemd/resolved.conf.d/cn-dns.conf
+    content: |
+      [Resolve]
+      DNS=114.114.114.114 119.29.29.29
+      FallbackDNS=114.114.114.114 119.29.29.29
+  - path: /etc/systemd/timesyncd.conf.d/cn-ntp.conf
+    content: |
+      [Time]
+      NTP=cn.ntp.org.cn
+pacman:
+  install:
+  - noto-fonts-cjk
+  - wqy-bitmapfont
+  - wqy-microhei
+  - wqy-microhei-lite
+  - wqy-zenhei
+  - ibus
+  - ibus-libpinyin
+sysconf:
+  environments:
+    GTK_IM_MODULE: ibus
+    QT_IM_MODULE: ibus
+    XMODIFIERS: '@im=ibus'
+    COUNTRY: CN
+    LANG: zh_CN.UTF-8
+    LANGUAGE: zh_CN.UTF-8
+    LC_ALL: zh_CN.UTF-8
+    TZ: Asia/Shanghai
+timezone: Asia/Shanghai

configs/os/archlinux.yaml

@@ -0,0 +1,11 @@
+pacman:
+  install:
+  - core/base
+sysconf:
+  hosts:
+  - 127.0.0.1 localhost
+  - 127.0.1.1 archlinux
+  hostname: archlinux
++also:
+- repo/archlinux
+- common/arch-user

configs/os/archlinuxarm.yaml

@@ -0,0 +1,11 @@
+pacman:
+  install:
+  - core/base
+sysconf:
+  hosts:
+  - 127.0.0.1 localhost
+  - 127.0.1.1 alarm
+  hostname: alarm
++also:
+- repo/archlinuxarm
+- common/alarm-user

configs/packages/bluez.yaml

@@ -0,0 +1,6 @@
+pacman:
+  install:
+  - bluez
+systemd:
+  enable:
+  - bluetooth.service

configs/packages/editor.yaml

@@ -0,0 +1,9 @@
+pacman:
+  install:
+  - nano
+  - less
+sysconf:
+  environments:
+    EDITOR: nano
+    VISUAL: nano
+    PAGER: less

configs/packages/network-manager.yaml

@@ -0,0 +1,7 @@
+pacman:
+  install:
+  - networkmanager
+systemd:
+  enable:
+  - NetworkManager.service
+  - systemd-resolved.service

configs/packages/openssh.yaml

@@ -0,0 +1,6 @@
+pacman:
+  install:
+  - openssh
+systemd:
+  enable:
+  - sshd.service

configs/packages/systemd-gadget.yaml

@@ -0,0 +1,10 @@
+pacman:
+  install:
+  - systemd-gadget
+  - dnsmasq
+systemd:
+  disable:
+  - getty@ttyGS0.service
+  - usbgadget-func-acm.service
+  enable:
+  - systemd-networkd.service

configs/packages/systemd-networkd.yaml

@@ -0,0 +1,40 @@
+filesystem:
+  files:
+    - path: /etc/systemd/network/20-ethernet.network
+      content: |
+        [Match]
+        Name=en*
+        Name=eth*
+        [Network]
+        DHCP=yes
+        IPv6PrivacyExtensions=yes
+        [DHCPv4]
+        RouteMetric=100
+        [IPv6AcceptRA]
+        RouteMetric=100
+    - path: /etc/systemd/network/20-wlan.network
+      content: |
+        [Match]
+        Name=wl*
+        [Network]
+        DHCP=yes
+        IPv6PrivacyExtensions=yes
+        [DHCPv4]
+        RouteMetric=600
+        [IPv6AcceptRA]
+        RouteMetric=600
+    - path: /etc/systemd/network/20-wwan.network
+      content: |
+        [Match]
+        Name=ww*
+        [Network]
+        DHCP=yes
+        IPv6PrivacyExtensions=yes
+        [DHCPv4]
+        RouteMetric=700
+        [IPv6AcceptRA]
+        RouteMetric=700
+systemd:
+  enable:
+  - systemd-networkd.service
+  - systemd-resolved.service

configs/repo/arch4edu.yaml

@@ -0,0 +1,7 @@
+pacman:
+  repo:
+  - name: arch4edu
+    priority: 800
+    server: https://mirrors.bfsu.edu.cn/arch4edu/${arch}
+  install:
+  - arch4edu/arch4edu-keyring

configs/repo/archlinux.yaml

@@ -0,0 +1,21 @@
+pacman:
+  repo:
+  - name: core
+    priority: 100
+    server: https://mirrors.bfsu.edu.cn/archlinux/core/os/${arch}
+  - name: extra
+    priority: 110
+    server: https://mirrors.bfsu.edu.cn/archlinux/extra/os/${arch}
+  - name: multilib
+    priority: 120
+    server: https://mirrors.bfsu.edu.cn/archlinux/multilib/os/${arch}
+  trust:
+  - eworm@archlinux.org
+  - dvzrv@archlinux.org
+  - bluewind@archlinux.org
+  - demize@archlinux.org
+  - artafinde@archlinux.org
+  - anthraxx@archlinux.org
+  - foxboron@archlinux.org
+  install:
+  - core/archlinux-keyring

configs/repo/archlinuxarm.yaml

@@ -0,0 +1,19 @@
+pacman:
+  repo:
+  - name: core
+    priority: 100
+    server: http://mirrors.bfsu.edu.cn/archlinuxarm/${arch}/core
+  - name: extra
+    priority: 110
+    server: https://mirrors.bfsu.edu.cn/archlinuxarm/${arch}/extra
+  - name: alarm
+    priority: 120
+    server: https://mirrors.bfsu.edu.cn/archlinuxarm/${arch}/alarm
+  - name: aur
+    priority: 130
+    server: https://mirrors.bfsu.edu.cn/archlinuxarm/${arch}/aur
+  trust:
+  - builder@archlinuxarm.org
+  install:
+  - core/archlinuxarm-keyring
+  - core/archlinux-keyring

configs/repo/archlinuxcn.yaml

@@ -0,0 +1,9 @@
+pacman:
+  repo:
+  - name: archlinuxcn
+    priority: 500
+    server: https://mirrors.bfsu.edu.cn/archlinuxcn/${arch}
+  trust:
+  - farseerfc@archlinux.org
+  install:
+  - archlinuxcn/archlinuxcn-keyring

configs/repo/blackarch.yaml

@@ -0,0 +1,9 @@
+pacman:
+  repo:
+  - name: blackarch
+    priority: 1000
+    server: https://mirrors.bfsu.edu.cn/blackarch/blackarch/os/${arch}
+  trust:
+  - noptrix@nullsecurity.net
+  install:
+  - blackarch/blackarch-keyring

configs/repo/renegade-project.yaml

@@ -0,0 +1,9 @@
+pacman:
+  repo:
+  - name: renegade-project
+    priority: 200
+    server: https://mirror.renegade-project.tech/arch/${arch}
+  trust:
+  - renegade-project@classfun.cn
+  install:
+  - renegade-project/renegade-project-keyring

configs/target/ayn-odin2-sdcard.yaml

@@ -0,0 +1,77 @@
+name: AYN Odin 2 in SD Card
+target: ${device}-sdcard
+arch: aarch64
+pacman:
+  install:
+  - grub
+  - efibootmgr
+image:
+- type: disk
+  output: sdcard.img
+  layout: gpt
+  size: 6GiB
+  sector: 512
+  partitions:
+  - type: filesystem
+    ptype: efi
+    pname: esp
+    size: 512MiB
+    fsname: ESP
+    fstype: fat32
+    mount: /boot
+    fstab:
+      flags: rw,noatime,utf8,errors=remount-ro
+  - type: filesystem
+    ptype: linux-root-arm64
+    pname: linux
+    fsname: ArchLinuxARM
+    fstype: ext4
+    mount: /
+    grow: yes
+    fstab:
+      boot: yes
+      flags: rw,noatime,discard
+fstab:
+  dev: partlabel
+grub:
+  path: /boot/grub
+  targets:
+  - arm64-efi
+bootloader:
+  timeout: 3
+  method:
+  - grub
+  items:
+  - type: linux
+    default: yes
+    name: Arch Linux ARM for AYN Odin 2
+    path: ${kernel.path}
+    kernel: /${kernel.kernel}
+    initramfs: /${kernel.initramfs}
+    devicetree: /${kernel.devicetree}
+    cmdline: ${@kernel.cmdline} ro quiet splash
+filesystem:
+  files:
+    - path: /boot/LinuxLoader.cfg
+      stage: post-fs
+      content: |
+        [LinuxLoader]
+        Debug = true
+        Target = "Linux"
+        MassStorageLUN = 0
+        DefaultVolUp = "BDS Menu"
+        UsbHostMode = false
+        HypUartEnable = false
+        DisableDisplayHW = true
+        [Linux]
+        Image = "${kernel.kernel}"
+        initrd = "${kernel.initramfs}"
+        devicetree = "${kernel.devicetree}"
+        cmdline = "${@kernel.cmdline}"
+kernel:
+  path: /boot
+  kernel: Image
+  initramfs: initramfs-linux.img
+  devicetree: dtbs/${platform}/${soc}-${device}${device_suffix}.dtb
++also:
+- device/ayn-odin2

configs/target/ayn-odin2-ufs.yaml

@@ -0,0 +1,16 @@
+name: AYN Odin 2 in UFS
+target: ${device}-ufs
+arch: aarch64
+image:
+- type: filesystem
+  fstype: ext4
+  size: 8GiB
+  sector: 4096
+  label: ArchLinuxARM
+  mount: /
+  fstab:
+    flags: rw,noatime,utf8,errors=remount-ro
+fstab:
+  dev: partlabel
++also:
+- device/ayn-odin2

configs/target/x86_64-dual.yaml

@@ -0,0 +1,72 @@
+name: Generic x86_64 compatible PC Dual Boot
+target: x86_64-dual
+arch: x86_64
+pacman:
+  install:
+  - grub
+  - amd-ucode
+  - intel-ucode
+  - efibootmgr
+image:
+- type: disk
+  output: disk.img
+  layout: gpt
+  size: 2GiB
+  sector: 512
+  partitions:
+  - ptype: bios
+    pname: bios
+    size: 4MiB
+  - type: filesystem
+    ptype: efi
+    pname: esp
+    size: 4MiB
+    fsname: ESP
+    fstype: fat12
+    mount: /boot/efi
+    fstab:
+      flags: rw,noatime,utf8,errors=remount-ro
+  - type: filesystem
+    ptype: linux-root-x86-64
+    pname: linux
+    fsname: ArchLinux
+    fstype: ext4
+    mount: /
+    grow: yes
+    fstab:
+      boot: yes
+      flags: rw,noatime,discard
+    grow: yes
+fstab:
+  dev: partlabel
+kernel:
+  kernel: /boot/vmlinuz-linux
+  initramfs: /boot/initramfs-linux.img
+  cmdline:
+  - add_efi_memmap
+grub:
+  path: /boot/grub
+  targets:
+  - x86_64-efi
+  - i386-efi
+  - i386-pc
+bootloader:
+  timeout: 3
+  method:
+  - grub
+  items:
+  - type: linux
+    default: yes
+    name: Arch Linux
+    path: /
+    kernel: ${kernel.kernel}
+    initramfs: ${kernel.initramfs}
+    cmdline: ${@kernel.cmdline} ro quiet splash
+  - type: linux
+    name: Arch Linux Fallback
+    path: /
+    kernel: ${kernel.kernel}
+    initramfs: /boot/initramfs-linux-fallback.img
+    cmdline: ${@kernel.cmdline} rw loglevel=7
++also:
+- device/x86_64

requirements.txt

@@ -0,0 +1,3 @@
+libarchive-c
+pyalpm
+yaml