#! /bin/bash

# This script uses the KIWI 'editbootconfig' hook to modify the Live layout
# and ISO generation.
#
# Note that the 'editbootconfig' hook runs before the initrd is generated -
# this is too early for our purposes. So we have to do some gray area
# trickery:
#
# 1. Inject our modification scripts via config-cdroot.tar.xz into the Live tree.
# 2. Inject a 'xorriso' wrapper script into /usr/local/bin to hook into the ISO
#    creation directly.
#    This script (a) adjusts the boot config, (b) runs xorriso, and (c) makes
#    it zIPL bootable on s390x.
#

# KIWI config
test -f .profile && . .profile

dst=${1#iso:}

arch=`uname -m`

# removing live root setting from command line - it's in /etc/cmdline.d instead
if [ -f $dst/boot/grub2/grub.cfg ] ; then
  sed -i -E -e 's/\s+root=\S+//' -e 's/\s+rd.live\.image//' $dst/boot/grub2/grub.cfg
fi

bootfix=$dst/fix_bootconfig.$arch
if [ -f $bootfix ] ; then
  echo "bootconfig script found: \"$bootfix\""
fi

if [ $arch = ppc64le ] ; then
  mkdir -p $dst/boot/grub2
  cp -r usr/share/grub2/powerpc-ieee1275 $dst/boot/grub2
  mv $dst/boot/grub2/powerpc-ieee1275/grub.elf $dst/boot/grub2
fi

cat <<XXX >/usr/local/bin/xorriso
#! /bin/bash

set -x

# get ISO file name and ISO volume id from xorriso parameters
for i in "\$@" ; do
  if [ -n "\$iso_opt" ] ; then
    iso_opt=
    export iso="\$i"
    continue
  fi
  if [ -n "\$volid_opt" ] ; then
    volid_opt=
    export volid="\$i"
    continue
  fi
  if [ "\$i" = "-outdev" ] ; then
    iso_opt=1
    continue
  fi
  if [ "\$i" = "-volid" ] ; then
    volid_opt=1
    continue
  fi
done

volid=${kiwi_install_volid:-$kiwi_iname}

[ -x $bootfix ] && $bootfix $dst
rm -f $dst/fix_bootconfig.*

case $arch in
  s390x)
    /usr/bin/xorriso "\$@" -volid "\$volid" -boot_image any bin_path=boot/s390x/cd.ikr -boot_image any boot_info_table=off -boot_image any load_size=512
    err=\$?
    [ -x /usr/bin/isozipl ] && isozipl "\$iso"
    ;;
  ppc64le)
    /usr/bin/xorriso "\$@" -volid "\$volid" -boot_image any chrp_boot_part=on
    err=\$?
    ;;
  *)
    /usr/bin/xorriso "\$@" -volid "\$volid"
esac

exit \$err
XXX

chmod +x /usr/local/bin/xorriso