#!/bin/sh

# Install grub into a disk image file
#
# Copyright (C) 2008 Zhigang Wang <w1z2g3@gmail.com>
#
# 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 <http://www.gnu.org/licenses/>

imgfile=$1
mapfile=/tmp/tmp-$$.map

losetup /dev/loop0 $imgfile

# Generate device map
echo "(hd0) /dev/loop0" >$mapfile

# Install grub
grub --device-map $mapfile <<EOF
root (hd0,0)
setup (hd0)
quit
EOF

# Clean up
losetup -d /dev/loop0
rm -f $mapfile