util/i386/pc/grub-mkrescue.in

   1 #! /bin/sh -e
   2
   3 # Make GRUB rescue image
   4 # Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008  Free Software Foundation, Inc.
   5 #
   6 # GRUB is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # GRUB is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 # Initialize some variables.
  20 transform="@program_transform_name@"
  21
  22 prefix=@prefix@
  23 exec_prefix=@exec_prefix@
  24 bindir=@bindir@
  25 libdir=@libdir@
  26 PACKAGE_NAME=@PACKAGE_NAME@
  27 PACKAGE_TARNAME=@PACKAGE_TARNAME@
  28 PACKAGE_VERSION=@PACKAGE_VERSION@
  29 target_cpu=@target_cpu@
  30 platform=@platform@
  31 pkglibdir=${libdir}/`echo ${PACKAGE_TARNAME}/${target_cpu}-${platform} | sed ${transform}`
  32
  33 grub_mkimage=${bindir}/`echo grub-mkimage | sed ${transform}`
  34
  35 # Usage: usage
  36 # Print the usage.
  37 usage () {
  38     cat <<EOF
  39 Usage: grub-mkrescue [OPTION] output_image
  40 Make GRUB rescue image.
  41
  42   -h, --help              print this message and exit
  43   -v, --version           print the version information and exit
  44   --modules=MODULES       pre-load specified modules MODULES
  45   --overlay=DIR           overlay directory DIR in the memdisk image
  46                           (may be specified multiple times)
  47   --pkglibdir=DIR         use images from directory DIR instead of ${pkglibdir}
  48   --grub-mkimage=FILE     use FILE as grub-mkimage
  49   --image-type=TYPE       select floppy or cdrom (default)
  50   --emulation=TYPE        select El Torito boot emulation type floppy
  51                           or none (default) (cdrom only)
  52
  53 grub-mkimage generates a bootable rescue image of the specified type.
  54
  55 Report bugs to <bug-grub@gnu.org>.
  56 EOF
  57 }
  58
  59 image_type=cdrom
  60 input_dir=${pkglibdir}
  61 emulation=none
  62
  63 # Check the arguments.
  64 for option in "$@"; do
  65     case "$option" in
  66     -h | --help)
  67         usage
  68         exit 0 ;;
  69     -v | --version)
  70         echo "grub-mkrescue (GNU GRUB ${PACKAGE_VERSION})"
  71         exit 0 ;;
  72     --modules=*)
  73         modules=`echo "$option" | sed 's/--modules=//'` ;;
  74     --overlay=*)
  75         overlay=${overlay}${overlay:+ }`echo "$option" | sed 's/--overlay=//'` ;;
  76     --pkglibdir=*)
  77         input_dir=`echo "$option" | sed 's/--pkglibdir=//'` ;;
  78     --grub-mkimage=*)
  79         grub_mkimage=`echo "$option" | sed 's/--grub-mkimage=//'` ;;
  80     --image-type=*)
  81         image_type=`echo "$option" | sed 's/--image-type=//'`
  82         case "$image_type" in
  83           floppy|cdrom) ;;
  84           *)
  85             echo "Unknown image type \`$image_type'" 1>&2
  86             exit 1 ;;
  87         esac ;;
  88     --emulation=*)
  89         emulation=`echo "$option" | sed 's/--emulation=//'`
  90         case "$emulation" in
  91           floppy|none) ;;
  92           *)
  93             echo "Unknown emulation type \`$emulation'" 1>&2
  94             exit 1 ;;
  95         esac ;;
  96     -*)
  97         echo "Unrecognized option \`$option'" 1>&2
  98         usage
  99         exit 1
 100         ;;
 101     *)
 102         if test "x$output_image" != x; then
 103             echo "Unrecognized option \`$option'" 1>&2
 104             usage
 105             exit 1
 106         fi
 107         output_image="${option}" ;;
 108     esac
 109 done
 110
 111 if test "x$output_image" = x; then
 112   usage
 113   exit 1
 114 fi
 115
 116 aux_dir=`mktemp -d`
 117 mkdir -p ${aux_dir}/boot/grub
 118
 119 cp ${input_dir}/*.mod \
 120   ${input_dir}/command.lst ${input_dir}/moddep.lst ${input_dir}/fs.lst \
 121   ${aux_dir}/boot/grub/
 122
 123 modules="biosdisk `cat ${input_dir}/partmap.lst` ${modules}"
 124 for i in ${modules} ; do
 125   echo "insmod $i"
 126 done > ${aux_dir}/boot/grub/grub.cfg
 127
 128 for d in ${overlay}; do
 129   echo "Overlaying $d"
 130   cp -dpR "${d}"/* "${aux_dir}"/
 131 done
 132
 133 if [ "x${image_type}" = xfloppy -o "x${emulation}" = xfloppy ] ; then
 134   # build memdisk
 135   memdisk_img=`mktemp`
 136   tar -C ${aux_dir} -cf ${memdisk_img} boot
 137   rm -rf ${aux_dir}
 138
 139   # build core.img
 140   core_img=`mktemp`
 141   ${grub_mkimage} -d ${input_dir}/ -m ${memdisk_img} -o ${core_img} memdisk cpio
 142   rm -f ${memdisk_img}
 143
 144   # build floppy image
 145   if [ "x${image_type}" = xcdrom ] ; then
 146     floppy_dir=`mktemp -d`
 147     floppy_img=${floppy_dir}/grub_floppy.img
 148   else
 149     floppy_img=${output_image}
 150   fi
 151   cat ${input_dir}/boot.img ${core_img} /dev/zero | dd bs=1024 count=1440 > ${floppy_img}
 152   rm -f ${core_img}
 153
 154   if [ "x${image_type}" = xcdrom ] ; then
 155     # build iso image
 156     genisoimage -b grub_floppy.img \
 157       -o ${output_image} -r -J ${floppy_dir}
 158     rm -rf ${floppy_dir}
 159   fi
 160 else
 161   # build core.img
 162   core_img=`mktemp`
 163   ${grub_mkimage} -d ${input_dir}/ -o ${core_img} biosdisk iso9660
 164
 165   # build grub_eltorito image
 166   cat ${input_dir}/cdboot.img ${core_img} > ${aux_dir}/boot/grub/grub_eltorito
 167   rm -f ${core_img}
 168
 169   # build iso image
 170   genisoimage -b boot/grub/grub_eltorito \
 171     -no-emul-boot -boot-load-size 4 -boot-info-table \
 172     -o ${output_image} -r -J ${aux_dir}
 173   rm -rf ${aux_dir}
 174 fi
 175
 176 exit 0