Tobias Hintze
20 years ago
2 changed files with 264 additions and 15 deletions
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#!/bin/sh |
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# |
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# This is a contributed script to create a bootable ISO image from your |
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# rescue target build. |
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# |
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# It uses isolinux (syslinux) to create a non-emu bootable image. |
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# It uses memdisk (syslinux) to add grub to the list of choices. |
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# |
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# (C) 2004 Tobias Hintze |
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# |
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[ -z "$GRUBSRC" ] && GRUBSRC="/usr/share/grub" |
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[ -z "$SYSLINUXSRC" ] && SYSLINUXSRC="/usr/lib/syslinux" |
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set -e |
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usage() { |
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echo "Usage:" |
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echo " $0 ISODIR" |
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echo " creates the iso image from iso-dir" |
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echo |
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echo " $0 -c KERNEL INITRD[.gz] SYSTEM [OVERLAY]" |
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echo " creates iso-dir" |
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echo |
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echo " $0 -C KERNEL INITRD[.gz] SYSTEM [OVERLAY]" |
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echo " creates the iso image from kernel, initrd and system tarball" |
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echo "" |
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echo "Example usage (most commonly used):" |
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echo "(You get an iso image with default configuration and given files.)" |
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echo "" |
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echo "$0 -C vmlinuz initrd.img system.tar.bz2" |
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echo "" |
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echo "Using the -C option is like using the -c option except that after creating" |
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echo "the temporary iso-dir the script calls itself to create the image from that" |
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echo "dir (first usage option). The iso-dir is deleted on success afterwards." |
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echo "" |
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echo "* initrd.img and system.tar.bz2 are generated during the rescue-target build." |
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echo "* kernel must have support for devfs" |
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echo "* kernel must have support for initrd" |
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echo "* kernel must have support for iso9660" |
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echo "" |
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exit 1 |
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} |
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die() { |
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echo "$1" |
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exit 2 |
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} |
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check_reqs() { |
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[ -z "`type -p grub`" ] && \ |
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die "You need grub to create an image with this script." |
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[ -z "`type -p e2fsimage`" ] && \ |
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die "You need e2fsimage to create an image with this script." |
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[ -z "`type -p mkisofs`" ] && \ |
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die "You need mkisofs to create an image with this script." |
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[ -d "$GRUBSRC" ] || die "No grub stages at $GRUBSRC. I need them!" |
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[ -d "$SYSLINUXSRC" ] || die "No syslinux at $SYSLINUXSRC. I need it!" |
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echo "requirements ok." |
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} |
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test -z "$1" && usage |
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case "$1" in |
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-c|-C) |
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CREATEDIR=1 |
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[[ "$1" == "-C" ]] && CREATEDIR=2 |
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[[ $# == 4 || $# == 5 ]] || usage |
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[ -r $2 ] || exec echo "failed to read kernel image $2" |
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[ -r $3 ] || exec echo "failed to read initrd image $3" |
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[ -r $4 ] || exec echo "failed to read system $4" |
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KERNEL=$2 |
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INITRD=$3 |
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SYSTEM=$4 |
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[[ $# == 5 ]] && { |
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[ -r $5 ] || exec echo "failed to read overlay $5" |
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OVERLAY=$5 |
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} |
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;; |
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*) |
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[[ $# == 1 ]] || usage |
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[ -r $1 ] || exec echo "failed to read iso-dir $1" |
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esac |
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[[ "$CREATEDIR" != 1 ]] && [ -e iso ] && die "file \"iso\" is in my way." |
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check_reqs |
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GRUBSRC="$( find $GRUBSRC -type d -mindepth 1 -maxdepth 1 | head -n 1 )" |
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[ -r $GRUBSRC/stage1 -a -r $GRUBSRC/stage2 ] || die "grub stage1 or stage2 missing." |
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[ -r $SYSLINUXSRC/isolinux.bin -a \ |
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-r $SYSLINUXSRC/memdisk ] || die "isolinux.bin or memdisk missing." |
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if [ -n "$CREATEDIR" ] |
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then |
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TMPDIR=/var/tmp/rescuecd.$$ |
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mkdir $TMPDIR || die "failed to create tmp-dir \"$TMPDIR\"." |
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mkdir -pv $TMPDIR/iso/isolinux $TMPDIR/iso/rescue $TMPDIR/fd |
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# |
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# prepare the directory |
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# |
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# syslinux |
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cp -v $SYSLINUXSRC/isolinux.bin $SYSLINUXSRC/memdisk $TMPDIR/iso/isolinux/ |
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# kernel |
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cp -v $KERNEL $TMPDIR/iso/isolinux/krescue |
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# initrd |
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if [ "`file -bi $INITRD`" == "application/x-gzip" ] ; then |
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cp -v $INITRD $TMPDIR/iso/isolinux/rdrescue.gz |
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else |
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echo "compressing initrd image..." |
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cat $INITRD | gzip -c > $TMPDIR/iso/isolinux/rdrescue.gz |
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fi |
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cp -v $SYSTEM $TMPDIR/iso/rescue/system.tb2 |
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[ -n "$OVERLAY" ] && cp -v $OVERLAY $TMPDIR/iso/rescue/overlay.tar.bz2 |
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# |
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# create grub fd |
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# |
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echo "creating bootable grub fd image" |
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mkdir -v $TMPDIR/fd/grub |
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cp -v $GRUBSRC/*stage* $TMPDIR/fd/grub/ |
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e2fsimage -f $TMPDIR/iso/isolinux/fdgrub.img -d $TMPDIR/fd -v -s 360 |
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rm -f $TMPDIR/device.map |
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echo "(fd0) $TMPDIR/iso/isolinux/fdgrub.img" > $TMPDIR/device.map |
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[[ "`id -u`" == "0" ]] && { |
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echo "i don't want to run grub as root. destructive potential too high." |
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echo "if you want to do it on your own issue the following command: " |
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echo |
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echo "grub --device-map=$TMPDIR/device.map --batch <<EOF" |
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echo "root (fd0)" |
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echo "setup (fd0)" |
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echo "EOF" |
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echo |
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die "Cowardly refusing to endanger your MBR and disks." |
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} |
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grub --device-map=$TMPDIR/device.map --batch <<EOF |
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root (fd0) |
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setup (fd0) |
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EOF |
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echo "" |
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echo "finished creating fdgrub.img" |
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# create isolinux.cfg |
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cat > $TMPDIR/iso/isolinux/isolinux.cfg << EOF |
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DEFAULT rescue |
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TIMEOUT 300 |
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PROMPT 1 |
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DISPLAY display.txt |
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LABEL rescue |
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KERNEL krescue |
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APPEND initrd=rdrescue.gz root=/dev/ram boot=iso9660:/dev/cdroms/cdrom0 system=/mnt_boot/rescue/system.tb2 panic=60 |
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LABEL grub |
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KERNEL memdisk |
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APPEND initrd=fdgrub.img |
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EOF |
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cat > $TMPDIR/iso/isolinux/display.txt << "EOF" |
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____ ___ ___ _ __ _ |
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| _ \ / _ \ / __| |/ / | | _ _ __ _ _ _ _ |
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| . _/| | | | | | '_/ | | |_| '_ \| | | | \/ | |
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| |\ \| |_| | |__| . \ | |__| | | | | `_' |> < |
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|_| \_\ ___/ \___|_|\_\ |____|_|_| |_|\___/|_/\_| |
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[============> http://www.rocklinux.org/ <============] |
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Actions: |
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-------- |
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<ENTER> Boot into rescue system (ramdisk) |
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grub <ENTER> Run grub from emulated floppy image |
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rescue options <ENTER> Boot into rescue system with given options |
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"EOF" |
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EOF |
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if [ "$CREATEDIR" == "1" ] ; then |
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echo "ready. you might want to run:" |
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echo "$0 $TMPDIR/iso" |
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elif [ "$CREATEDIR" == "2" ] ; then |
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echo "running $0 $TMPDIR/iso" |
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$0 $TMPDIR/iso |
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rm -rfv $TMPDIR |
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fi |
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exit 0 |
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fi |
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test -z "$1" && usage |
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ISODIR=$1 |
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test -d $ISODIR || die "ISODIR \"$ISODIR\" not a directory." |
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create_iso_image() { |
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test -e iso && die "file \"iso\" is in my way." |
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mkisofs -b isolinux/isolinux.bin -c isolinux/boot.cat \ |
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-no-emul-boot -boot-load-size 4 \ |
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-boot-info-table -o iso $ISODIR |
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} |
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create_iso_image |
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