#!/bin/sh # MaKe a Bootable IMAGE --- 1.44, 2.88 and El Torito no-emulation mode # C) 2001,2002,2003 Thierry Laronde # C) 2001,2002,2003 Robert Millan # 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 2, 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, you can either send email to this # program's maintainer or write to: The Free Software Foundation, # Inc.; 59 Temple Place, Suite 330; Boston, MA 02111-1307, USA. # $Id: mkbimage,v 1.19 2004/07/21 14:43:04 robertmh Exp $ # Global variables tarfile= dir= fs= #file system type decompress= image_type= uname=`uname -s` PATH=/sbin:$PATH # You can set GRUB_PATH if you need to use a specially located GRUB. # This MUST end by a '/'! #----------------------------DON'T CHANGE: INTERNALS block_size=512 cylinders= heads= sectors= cyl_size= type_option= geo_option= image= bk_120=$((2 * 15 * 80)) bk_144=$((2 * 18 * 80)) bk_288=$((2 * 36 * 80)) bk_160=$((2 * 20 * 80)) bk_168=$((2 * 21 * 80)) bk_174=$((2 * 21 * 83)) lo_options= device_map= mkfs_options= debug= stage2_os_name= # Name by which this script was invoked. program=`echo "$0" | sed -e 's/[^\/]*\///g'` version_number='$Revision: 1.19 $' usage=" Usage: $program [-hVF] [-t TYPE] [-d DIRECTORY] [-s FS_TYPE] -f TAR_FILE Make a Bootable IMAGE using GRUB as a bootloader Options: Actions: -d DIRECTORY [default CWD] Directory where the boot.image and the partition subdirectories are/will be created -f TAR_FILE Name of the tar file containing the filesystem to install. Can be a pure tar file [.tar] or a compressed tar file [.tar.gz|.tar.bz2] -s FS_TYPE Type of the file system to create on the virtual disk. Choices are: ext2 on GNU [default is ext2] ext2, minix or msdos on GNU/Linux [default is ext2] -t TYPE Type of the image to create. Choices are '1.20', '1.44', '1.60', '1.68', '1.74', '2.88' or 'hd' [default is hd] -F Force to set the set_dpt flag (unnecessary 99% of the time! Be careful! Informations: -D turn Debugging on [xtrace] -h|--help display this Help and exit -V|--version display Version information and exit Copyright (c) 2001,2002,2003 Thierry Laronde . Copyright (c) 2001,2002 Robert Millan . GPLed." version="mkbimage $version_number Written by Thierry Laronde and Robert Millan. Copyright (c) 2001,2002,2003 Thierry Laronde . Copyright (c) 2001,2002,2003 Robert Millan . This is free software under the GPL version 2 or later; see the source for copying conditions. There is NO warranty, not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." # Functions error () { case $1 in bug) echo "This is a bug!"; echo "$usage";; option) echo "Unknow option"; echo "$usage";; missing_argument) echo "You must give an argument to the option!"; echo "$usage";; missing_option) echo "You must indicate at least one option!"; echo "$usage";; must_be_root) echo "You must be root! (or install e2tools/mtools)";; unknown_fs) if [ $uname = Linux ]; then echo "The GNU/Linux supported fs are: ext2, minix or msdos!"; elif [ $uname = GNU ]; then echo "The GNU supported fs is ext2!"; fi;; unknown_format) echo "The tar file must be .tar|.tar.gz|.tar.bz2!";; wont_fit) echo "The files won't fit on the selected type of media!";; wrong_directory) echo "Directory inexistant or not given!"; echo "$usage";; wrong_file) echo "File inexistant or empty!"; echo "$usage";; wrong_type) echo "The type specified is not a valid one!"; echo "$usage";; esac exit 1 } # create a filesystem of type $fs in $image with offset $offset mkbimage_mkfs () { case $offset in 0) lo_options="";; *) lo_options="-o $offset";; esac if [ "$offset" = "0" ] ; then mkfs.$fs -F $image elif [ `id -u` = "0" ] ; then losetup $lo_options /dev/loop1 $image mkfs.$fs /dev/loop1 losetup -d /dev/loop1 else error must_be_root fi } # copy ${image}1/* to ${image}:/, assuming ${image} contains a filesystem # of type $fs in offset $offset mkbimage_cp () { case $offset in 0) lo_options="";; *) lo_options="-o $offset";; esac case $fs in ext2) cp="e2cp"; mkdir="e2mkdir";; vfat) cp="mcopy"; mkdir="mmd";; *) cp=""; mkdir="";; esac if [ "$offset" = 0 ] && which $cp > /dev/null ; then for dir in $(cd ${image}1 && find -type d) ; do $mkdir ${image}:$dir done for file in $(cd ${image}1 && find -type f) ; do $cp ${image}1/$file ${image}:$file done elif [ "`id -u`" = "0" ] ; then losetup $lo_options /dev/loop1 $image mkdir ${image}.mnt mount -t $fs /dev/loop1 ${image}.mnt cp -a ${image}1/* ${image}.mnt/ && sync umount ${image}.mnt rmdir ${image}.mnt losetup -d /dev/loop1 else error must_be_root fi } #********************************************************************** # MAIN PROGRAM * #********************************************************************** #---------------------- Getting the options [ $# -eq 0 ] && error missing_option; while [ $# -gt 0 ]; do case "$1" in -d) shift; dir="$1"; [ ! -d "$1" ] && error wrong_directory;; -f) shift; tarfile="$1"; [ -z "$tarfile" ] && error missing_argument;; -s) shift; fs="$1";; -t) shift; image_type="$1";; -F) geo_option="-F";; -D) debug="-v"; set -x;; -h|--help) echo "$usage"; exit 0;; -V|--version) echo "$version"; exit 0;; *) error option ;; esac shift done #---------------------- Sanity checks [ ! "$tarfile" ] && error missing_argument; [ ! -s "$tarfile" ] && error wrong_file; if [ ! "$image_type" ]; then image_type=hd; elif [ "$image_type" != "1.20" ] && [ "$image_type" != "1.44" ] \ && [ "$image_type" != "1.60" ] && [ "$image_type" != "1.68" ] \ && [ "$image_type" != "2.88" ] && [ "$image_type" != "1.74" ] \ && [ "$image_type" != "hd" ] && [ "$image_type" != "1.60" ] ; then error wrong_type ; fi [ ! "$fs" ] && fs=ext2 # Carlo Contavalli reported that I [TL] have forgotten to specify the # partition ID for sfdisk to correctly fill the partition table (ext2 is the # default on Linux, so this worked in this case...). This is fixed below. case "$fs" in ext2) mkfs_options="-m 0"; part_id="83";; # This is the default # ufs) if [ $uname = Linux ]; # then error unknown_fs; # fi;; minix) if [ $uname = GNU ]; then error unknown_fs; else mkfs_options="-v"; # Minix version 2 part_id="81"; fi;; msdos) if [ $uname = GNU ]; then error unknown_fs; else mkfs_options="-f 1 -F 12"; # the smallest... part_id="1"; fi;; *) error unknown_fs;; esac # What type of tar file has been given ? suffix=`echo "$tarfile" | sed -n 's/^.*\.\([targbz2]\{2,3\}\)$/\1/p'` case "$suffix" in tar) decompress="cat";; gz) decompress="gunzip -c";; bz2) decompress="bunzip2 -c";; *) error unknown_format;; esac #---------------------- Initializations [ ! "$dir" ] && dir=`pwd` image=$dir/$image_type.image device_map=$dir/device.map # First, find the size of the tar file in block_size. file_size=`$decompress $tarfile | wc -c | tr -d ' '` file_size=$(($file_size / $block_size + 1)) # Increase in order to be sure that with a fs there will be enough # room (trying 110%) file_size=$(($file_size + $file_size / 10)) case "$image_type" in hd) heads=16; sectors=63; cyl_size=$((16 * 63)); # Create the minimum number of cylinders. At the moment, we leave # some space by rounding everything up by adding 1 cylinder, plus # another one for MBR + reserved track. cylinders=$(($file_size / $cyl_size + 2));; 1.20) [ $file_size -ge $bk_120 ] && error wont_fit; heads=2; sectors=15; cyl_size=$((2 * 15)); cylinders=80;; 1.44) [ $file_size -ge $bk_144 ] && error wont_fit; heads=2; sectors=18; cyl_size=$((2 * 18)); cylinders=80;; 1.60) [ $file_size -ge $bk_160 ] && error wont_fit; heads=2; sectors=20; cyl_size=$((2 * 20)); cylinders=80; geo_option="-F";; 1.68) [ $file_size -ge $bk_168 ] && error wont_fit; heads=2; sectors=21; cyl_size=$((2 * 21)); cylinders=80;; 1.74) [ $file_size -ge $bk_174 ] && error wont_fit; heads=2; sectors=21; cyl_size=$((2 * 21)); cylinders=83;; 2.88) [ $file_size -ge $bk_288 ] && error wont_fit; heads=2; sectors=36; cyl_size=$((2 * 36)); cylinders=80;; *) error bug;; esac type_option="-t $image_type" # We start by creating a virtual disk which size is the number of # cylinders of $cyl_size mandatory to put the files stocked in the $tarfile # Create the empty virtual disk dd if=/dev/zero of=$image bs=$block_size count=$(($cyl_size * $cylinders)) # We then format the virtual disk # NOTE: the El Torito specification wants only one partition. So we # create the first, and the remaining 3 entries are empty. if [ "$image_type" = "hd" ]; then sfdisk -C $cylinders -H $heads -S $sectors -D $image<$device_map $device ${image} EOT ${GRUB_PATH}grub --device-map=$device_map --batch<.image of=/dev/fd0[u] bs=512 will be more than enough... if you have formated the floppy correctly using \`superformat' to be found in \`fdutils' package. For El Torito floppy emulation : mkisofs -b -c boot.catalog -o raw.iso And for El Torito Hard Disk emulation: mkisofs -b -hard-disk-boot -c boot.catalog -o raw.iso Enjoy! EOF rm -rf ${image}1 exit 0