# -*- coding: utf-8 -*- from __future__ import print_function import os import six from collections import namedtuple from kobo.shortcuts import run from six.moves import shlex_quote from .wrappers import iso from .wrappers.jigdo import JigdoWrapper from .phases.buildinstall import BOOT_CONFIGS, BOOT_IMAGES CreateIsoOpts = namedtuple( "CreateIsoOpts", [ "buildinstall_method", "boot_iso", "arch", "output_dir", "jigdo_dir", "iso_name", "volid", "graft_points", "supported", "os_tree", "hfs_compat", "use_xorrisofs", "iso_level", "script_dir", ], ) CreateIsoOpts.__new__.__defaults__ = (None,) * len(CreateIsoOpts._fields) def quote(str): """Quote an argument for shell, but make sure $TEMPLATE variable will be expanded. """ if str.startswith("$TEMPLATE"): return "$TEMPLATE%s" % shlex_quote(str.replace("$TEMPLATE", "", 1)) return shlex_quote(str) def emit(f, cmd): """Print line of shell code into the stream.""" if isinstance(cmd, six.string_types): print(cmd, file=f) else: print(" ".join([quote(x) for x in cmd]), file=f) FIND_TEMPLATE_SNIPPET = """if ! TEMPLATE="$($(head -n1 $(which lorax) | cut -c3-) -c 'import pylorax; print(pylorax.find_templates())')"; then TEMPLATE=/usr/share/lorax; fi""" # noqa: E501 def make_image(f, opts): mkisofs_kwargs = {} if opts.buildinstall_method: if opts.buildinstall_method == "lorax": emit(f, FIND_TEMPLATE_SNIPPET) mkisofs_kwargs["boot_args"] = iso.get_boot_options( opts.arch, os.path.join("$TEMPLATE", "config_files/ppc"), hfs_compat=opts.hfs_compat, ) elif opts.buildinstall_method == "buildinstall": mkisofs_kwargs["boot_args"] = iso.get_boot_options( opts.arch, "/usr/lib/anaconda-runtime/boot" ) # ppc(64) doesn't seem to support utf-8 if opts.arch in ("ppc", "ppc64", "ppc64le"): mkisofs_kwargs["input_charset"] = None cmd = iso.get_mkisofs_cmd( opts.iso_name, None, volid=opts.volid, exclude=["./lost+found"], graft_points=opts.graft_points, use_xorrisofs=opts.use_xorrisofs, iso_level=opts.iso_level, **mkisofs_kwargs ) emit(f, cmd) def implant_md5(f, opts): cmd = iso.get_implantisomd5_cmd(opts.iso_name, opts.supported) emit(f, cmd) def run_isohybrid(f, opts): """If the image is bootable, it should include an MBR or GPT so that it can be booted when written to USB disk. This is done by running isohybrid on the image. """ if opts.buildinstall_method and opts.arch in ["x86_64", "i386"]: cmd = iso.get_isohybrid_cmd(opts.iso_name, opts.arch) emit(f, cmd) def make_manifest(f, opts): emit(f, iso.get_manifest_cmd(opts.iso_name, opts.use_xorrisofs)) def make_jigdo(f, opts): jigdo = JigdoWrapper() files = [{"path": opts.os_tree, "label": None, "uri": None}] cmd = jigdo.get_jigdo_cmd( os.path.join(opts.output_dir, opts.iso_name), files, output_dir=opts.jigdo_dir, no_servers=True, report="noprogress", ) emit(f, cmd) def _get_perms(fs_path): """Compute proper permissions for a file. This mimicks what -rational-rock option of genisoimage does. All read bits are set, so that files and directories are globally readable. If any execute bit is set for a file, set them all. No writes are allowed and special bits are erased too. """ statinfo = os.stat(fs_path) perms = 0o444 if statinfo.st_mode & 0o111: perms |= 0o111 return perms def write_xorriso_commands(opts): # Create manifest for the boot.iso listing all contents boot_iso_manifest = "%s.manifest" % os.path.join( opts.script_dir, os.path.basename(opts.boot_iso) ) run( iso.get_manifest_cmd( opts.boot_iso, opts.use_xorrisofs, output_file=boot_iso_manifest ) ) # Find which files may have been updated by pungi. This only includes a few # files from tweaking buildinstall and .discinfo metadata. There's no good # way to detect whether the boot config files actually changed, so we may # be updating files in the ISO with the same data. UPDATEABLE_FILES = set(BOOT_IMAGES + BOOT_CONFIGS + [".discinfo"]) updated_files = set() excluded_files = set() with open(boot_iso_manifest) as f: for line in f: path = line.lstrip("/").rstrip("\n") if path in UPDATEABLE_FILES: updated_files.add(path) else: excluded_files.add(path) script = os.path.join(opts.script_dir, "xorriso-%s.txt" % id(opts)) with open(script, "w") as f: emit(f, "-indev %s" % opts.boot_iso) emit(f, "-outdev %s" % os.path.join(opts.output_dir, opts.iso_name)) emit(f, "-boot_image any replay") emit(f, "-volid %s" % opts.volid) # isoinfo -J uses the Joliet tree, and it's used by virt-install emit(f, "-joliet on") # Support long filenames in the Joliet trees. Repodata is particularly # likely to run into this limit. emit(f, "-compliance joliet_long_names") with open(opts.graft_points) as gp: for line in gp: iso_path, fs_path = line.strip().split("=", 1) if iso_path in excluded_files: continue cmd = "-update" if iso_path in updated_files else "-map" emit(f, "%s %s %s" % (cmd, fs_path, iso_path)) emit(f, "-chmod 0%o %s" % (_get_perms(fs_path), iso_path)) if opts.arch == "ppc64le": # This is needed for the image to be bootable. emit(f, "-as mkisofs -U --") emit(f, "-chown_r 0 /") emit(f, "-chgrp_r 0 /") emit(f, "-end") return script def write_script(opts, f): if bool(opts.jigdo_dir) != bool(opts.os_tree): raise RuntimeError("jigdo_dir must be used together with os_tree") emit(f, "#!/bin/bash") emit(f, "set -ex") emit(f, "cd %s" % opts.output_dir) if opts.use_xorrisofs and opts.buildinstall_method: script = write_xorriso_commands(opts) emit(f, "xorriso -dialog on <%s" % script) else: make_image(f, opts) run_isohybrid(f, opts) implant_md5(f, opts) make_manifest(f, opts) if opts.jigdo_dir: make_jigdo(f, opts)