#! /bin/sh # grub-image - Create a GRUB boot filesystem image and tarball # Gordon Matzigkeit , 2000-07-25 # # Copyright (C) 2000, 2002 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. prefix=@prefix@ exec_prefix=@exec_prefix@ sbindir=@sbindir@ datadir=@datadir@ PACKAGE=@PACKAGE@ host_cpu=@host_cpu@ host_os=@host_os@ host_vendor=@host_vendor@ context=${host_cpu}-${host_vendor} pkgdatadir=${datadir}/${PACKAGE}/${context} mke2fs=/sbin/mke2fs progname=`echo "$0" | sed 's%^.*/%%'` thisdir=`echo "$0" | sed 's%/[^/]*$%%'` test "X$thisdir" = "X$0" && thisdir=. # See if we were invoked from within the build directory, and if so, # use the built files rather than the installed ones. if test -f $thisdir/../stage2/stage2; then grub_shell="$thisdir/../grub/grub" stage1dir="$thisdir/../stage1" stage2dir="$thisdir/../stage2" else grub_shell=${sbindir}/grub stage1dir="$pkgdatadir" stage2dir="$pkgdatadir" fi # Exit on any error. set -e # Get GRUB's version from the Grub shell, since we use the # installed files. VERSION=`$grub_shell --version | sed -e 's/^.* \([0-9.]*\).*$/\1/'` test "X$VERSION" != X bootdir=${PACKAGE}-${VERSION}-${context} image=$bootdir.ext2fs # Create the tarball. if test ! -f $bootdir.tar.gz; then echo "# Creating \`$bootdir.tar.gz'" mkdir -p $bootdir/boot/grub cp -p $stage1dir/stage1 $stage2dir/*_stage1_5 $stage2dir/stage2 \ $bootdir/boot/grub test ! -f menu.lst || cp -p menu.lst $bootdir/boot/grub trap "rm -f $bootdir.tar.gz" 0 GZIP=-9 tar -zcf $bootdir.tar.gz $bootdir trap '' 0 rm -rf $bootdir fi # Create a new filesystem image of the specified size. if test ! -f $image; then tarsize=`zcat $bootdir.tar.gz | wc -c` # Add about 30% (20% overhead plus 10% breathing room), and convert # to kilobytes. This factor was determined empirically. SIZE=`expr $tarsize \* 130 / 100 / 1024`k echo "# Creating $SIZE disk image \`$image'" trap "rm -f $image" 0 dd if=/dev/zero of=$image bs=$SIZE count=1 >/dev/null $mke2fs -F $image trap '' 0 fi # Attempt to mount the image. echo "# Mounting \`$image'" test -d $bootdir || mkdir $bootdir case "$host_os" in gnu*) settrans -a $bootdir /hurd/ext2fs $image umount="settrans -a $bootdir" ;; linux*) # This requires running as root, and using the loop device. i=0 while test -e /dev/loop$i; do if /sbin/losetup /dev/loop$i $image; then break fi i=`expr $i + 1` done # Silly losetup doesn't report an error! mount /dev/loop$i $bootdir umount="umount $bootdir && /sbin/losetup -d /dev/loop$i && trap '' 0" ;; *) echo "$progname: Mounting \`$image' under \`$host_os' is not supported" 1>&2 exit 1 ;; esac trap "$umount" 0 # Extract our tarball into the image, then unmount it. echo "# Copying files into \`$image':" tar -zxvf $bootdir.tar.gz echo "# \`$image' usage:" df $bootdir eval $umount rmdir $bootdir || : # Use the GRUB shell to properly set up GRUB on the image. echo "# Installing GRUB in \`$image'" cat device (fd0) $image root (fd0) install /boot/grub/stage1 (fd0) /boot/grub/stage2 quit EOF exit 0
