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libisoburn/frontend/grub-mkrescue-sed.sh

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2.0 KiB

#!/bin/sh
# Copyright (C) 2015
# Thomas Schmitt <scdbackup@gmx.net>, libburnia-project.org
# Provided under BSD license: Use, modify, and distribute as you like.
echo >&2
echo "frontend/grub-mkrescue-sed.sh manipulating xorriso arguments" >&2
echo >&2
# This script may be handed by its absolute path to grub-mkrescue
# via option --xorriso= . E.g.
#
# mkdir minimal
# touch minimal/empty-file.txt
# grub-mkrescue -o output.iso minimal \
# --xorriso=/home/thomas/xorriso-1.4.3./frontend/grub-mkrescue-sed.sh
#
# It will manipulate the xorriso arguments before
# they get executed by the neighboring ../../xorriso/xorriso program.
#
# In its current form it implements an experiment which should be
# accompanied by a xorriso from
# export CPPFLAGS="-DLibisofs_mjg_boot_for_grub2"
# ./configure && make clean && make
# Variation settings:
# First argument of -append_partition
partno=1
# Replacement for option --protective-msdos-label
protective="--protective-msdos-label"
# "yes" make the script very verbous
debug=no
if test "$debug" = yes
then
# Show arguments
echo "$0" >&2
for i in "$@"
do
echo "|""$i""|" >&2
done
fi
# Look for the name of the /tmp directory with the GRUB2 files.
# It is the next argument after -r.
next_is_dir=0
dir="."
for i in "$@"
do
if test x"$i" = x"-r"
then
next_is_dir=1
elif test $next_is_dir = 1
then
next_is_dir=0
dir="$i"
fi
done
if test "$debug" = yes
then
# Show files on disk
find "$dir"
fi
# Exchange arguments for the experimental GRUB2 mjg layout
x=$(echo " $*" | sed \
-e "s/-efi-boot-part --efi-boot-image/-no-pad -append_partition $partno 0xef \/tmp\/$(basename "$dir")\/efi.img/" \
-e "s/--efi-boot efi\.img/-eltorito-alt-boot -e efi.img -no-emul-boot -isohybrid-gpt-basdat/" \
-e "s/--protective-msdos-label/$protective/" \
)
if test "$debug" = yes
then
echo "+ converted xorriso arguments:" >&2
echo " $x" >&2
fi
# Run neighboring xorriso binary with the altered arguments
self_dir=$(dirname $(dirname "$0") )
"$self_dir"/xorriso/xorriso $x