#! /bin/sh -e

# update-grub helper script.
# Copyright (C) 2006, 2007 Free Software Foundation, Inc.
#
# This file 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 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, write to the Free Software
# Foundation, Inc., 51 Franklin St - Suite 330, Boston, MA 02110, USA.

if [ "x${GRUB_DISTRIBUTOR}" = "" ] ; then
  OS=GNU/Linux
else
  OS="${GRUB_DISTRIBUTOR} GNU/Linux"
fi

if [ $( stat -c %d /boot ) -eq $( stat -c %d / ) ]
then
	prefix="/boot"
else
	prefix=""
fi

for linux in /boot/vmlinu[xz]-* /vmlinu[xz]-* ; do
  if test -e ${linux} ; then : ; else
    continue
  fi
  echo "Found linux image:  $linux" >&2
  version=`echo $linux | sed -e "s,.*/[^0-9]*-,,g"`
  kernel=`echo $linux | sed -e "s,[/boot/]*,,g"`
  basedir=`echo $linux | sed -e "s,/[^/]*$,,g"`
  echo $kernel
  cat << EOF
menuentry "${OS}, linux ${version}" {
	linux	${prefix}/${kernel} root=${GRUB_DEVICE} ro ${GRUB_CMDLINE_LINUX}
EOF
  if test -e ${basedir}/initrd.img-${version} ; then
    echo "Found initrd image: ${basedir}/initrd.img-${version}" >&2
    cat << EOF
	initrd	${prefix}/initrd.img-${version}
EOF
  fi
  cat << EOF
}
EOF
  cat << EOF
menuentry "${OS}, linux ${version} (single-user mode)" {
	linux	${prefix}/${kernel} root=${GRUB_DEVICE} ro single ${GRUB_CMDLINE_LINUX}
EOF
  if test -e ${basedir}/initrd.img-${version} ; then
    cat << EOF
	initrd	${prefix}/initrd.img-${version}
EOF
  fi
  cat << EOF
}
EOF
done