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# Copyright (C) 2005 Mandriva
# Olivier Blin <oblin@mandriva.com>
# Copyright (C) 2017-2018 Mageia
# Martin Whitaker <mageia@martin-whitaker.me.uk>
#
# 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 2, 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, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA.
# SYNOPSIS
# --------
# This package provides a function to finally build the ISO image.
package MGA::DrakISO::BuildISO;
use strict;
use MDK::Common;
use common;
use MGA::DrakISO::ISOBuild;
use MGA::DrakISO::Loopback;
use MGA::DrakISO::Utils;
use MGA::DrakISO::BuildLoop;
use Exporter;
our @ISA = qw(Exporter);
our @EXPORT = qw(build_iso);
# This is the top-level function called to build an ISO image. It generates
# the list of file assignments before calling build_iso_image() to do the
# actual work. All the files to go on the ISO should be stored in or linked
# into the build directory before calling this function.
#
sub build_iso {
my ($build) = @_;
my $loopbacks = $build->get_build_dir('loopbacks');
my $files = $build->get_build_dir('files');
build_iso_image(
$build,
'/boot=' . $build->get_build_dir('boot'),
if_($build->{settings}{arch} eq 'x86_64',
'/EFI=' . $build->get_build_dir('EFI'),
),
if_(-d $loopbacks,
map {
'/loopbacks' . $_ . '=' . $loopbacks . $_;
} list_selected_loopbacks($build)
),
if_(-d $files,
map {
$_ . '=' . $files . '/' . $_;
} all($files)
),
);
}
sub list_selected_loopbacks {
my ($build) = @_;
my @pack = $build->{settings}{pack} ? @{$build->{packs}{$build->{settings}{pack}} || []} : ();
my @pack_modules = grep { member($_->{name}, @pack) } list_loopback_modules($build);
(map { $loop_types{$_->{type}}{is_loopback} && $_->{path} ? $_->{path} . $loop_types{$_->{type}}{extension} : () } @{$build->{mount}{dirs} || []}),
(map { '/modules/' . $_->{name} . $loop_types{$_->{type}}{extension} } @pack_modules);
}
# This function builds a hybrid ISO capable of both legacy and UEFI boot. The
# ISO contains a primary iso9660 partition (which is the only thing visible
# when booting from DVD) and a secondary ESP partition (which is only used
# for USB UEFI boot).
#
# For legacy boot, the system boots the grub2 El Torito image. For DVD boot,
# this is located via the El Torito catalogue. For USB boot, it is located
# via the grub2 MBR hybrid boot image, which is stored in the MBR. In both
# cases the initial grub2 root location is the iso9660 partition, so the
# initial grub2 configuration file will be read from that partition.
#
# For UEFI boot, the system boots the grub2 EFI image. For DVD boot, this
# is located via the El Torito catalogue, and we store it in the iso9660
# partition. For USB boot, it must be located in the /EFI/BOOT directory
# in the ESP. For DVD boot the initial grub2 root location is the iso9660
# partition, for USB boot it is the ESP partition, and the initial grub2
# configuration file will be located accordingly.
#
sub build_iso_image {
my ($build, @opts) = @_;
my $arch = $build->{settings}{arch};
my $mbr_image = $build->get_absolute_path($build->{media}{mbr_boot_img}) // '/usr/lib/grub/i386-pc/boot_hybrid.img';
-e $mbr_image or die "ERROR: cannot find MBR boot image $mbr_image\n";
my $esp_image = $build->get_build_dir('images') . '/esp.img';
-e $esp_image || $arch ne 'x86_64' or die "ERROR: cannot find ESP image $esp_image\n";
my $build_dir = $build->get_build_dir('dist');
mkdir_p($build_dir);
my $dest = $build_dir . '/' . $build->get_name . '.iso';
my $xorriso_version = `xorriso -version 2> /dev/null | head -1`;
chomp($xorriso_version);
my $date_file = $build_dir . '/DATE.txt';
run_("date > $date_file");
run_('xorrisofs',
if_($::verbose < 2, '-quiet'),
'-pad', '-l', '-R', '-J',
'-publisher', $build->{settings}{vendor},
'-preparer', 'drakiso',
'-sysid', 'Linux',
'-appid', $xorriso_version,
'-volid', $build->{media}{label},
'-follow-links',
'-graft-points',
'-hide-rr-moved',
'--sort-weight', 0, '/',
'--sort-weight', 1, '/boot',
# for hybrid MBR boot
'--grub2-mbr', $mbr_image,
'-b', '/boot/grub2/eltorito.img',
'-no-emul-boot',
'-boot-load-size', 4,
'-boot-info-table',
'--grub2-boot-info',
if_($arch eq 'x86_64',
# for DVD UEFI boot
'--efi-boot', '--interval:appended_partition_2:all::',
# for USB UEFI boot
'-part_like_isohybrid',
'-iso_mbr_part_type', '0x00',
'-append_partition', 2, '0xef', $esp_image,
),
'-o', $dest,
@opts,
'/DATE.txt=' . $date_file,
) or die "ERROR: unable to run xorrisofs\n";
run_("mgaiso-addmd5 $dest > /dev/null 2> /dev/null");
run_("md5sum $dest > $dest.md5");
run_("sha1sum $dest > $dest.sha1");
run_("sha512sum $dest > $dest.sha512");
if (my $suffix = $build->get_set_suffix) {
if (my ($prefix, $ext) = $dest =~ /(.*)(\.[^.]+)$/) {
my $link = $prefix . $suffix . $ext;
linkf($dest, $link);
print "linked as $link\n";
}
}
}
1;
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