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150 lines
3.6 KiB
150 lines
3.6 KiB
#!/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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# (C) 2004 Tobias Hintze
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#
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GRUBSRC=/usr/share/grub/i386-*
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set -e
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usage() {
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echo "Usage:"
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echo " $0 ISODIR FDDIR"
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echo " creates the iso from iso-dir and fd-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 and fd-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 from kernel, initrd and system tarball"
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echo ""
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echo "initrd.img and system.tar.bz2 are generated during the"
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echo "rescue-target build."
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echo ""
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echo "the kernel must have support for devfs and initrd."
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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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test -z "$1" && usage
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if [ "$1" == "-c" ] ; then
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CREATEDIRS=1
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fi
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if [ "$1" == "-C" ] ; then
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CREATEDIRS=2
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fi
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if [ ! -z "$CREATEDIRS" ]
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then
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shift
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TMPDIR=/var/tmp/rescue.$$
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mkdir $TMPDIR || die "failed to create tmp-dir \"$TMPDIR\"."
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mkdir -v $TMPDIR/iso $TMPDIR/fd
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#
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# prepare fd dir
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#
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test -z "$1" && usage
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KERNEL=$1 ; shift
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test -z "$1" && usage
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INITRD=$1 ; shift
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test -z "$1" && usage
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SYSTEM=$1 ; shift
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# kernel to fd
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cp -v $KERNEL $TMPDIR/fd/bzImage
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# initrd to fd
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if [ "`file -bi $INITRD`" == "application/x-gzip" ] ; then
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cp -v $INITRD $TMPDIR/fd/initrd.gz
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else
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echo "compressing initrd image..."
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cat $INITRD | gzip -c > $TMPDIR/fd/initrd.gz
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fi
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mkdir $TMPDIR/fd/grub
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# menu.lst to fd
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cat > $TMPDIR/fd/grub/menu.lst << EOF
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timeout 10
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title rescue ramdisk from cdrom
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kernel (fd0)/bzImage root=/dev/ram0 boot=iso9660:/dev/cdroms/cdrom0 panic=30
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initrd (fd0)/initrd.gz
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title LVM-boot-cycle
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configfile (fd0)/grub/menu.lst-LBC
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EOF
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cat > $TMPDIR/fd/grub/menu.lst-LBC << EOF
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title lvm boot cycle rootlv=/dev/vg00/lvroot0
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kernel (fd0)/bzImage root=/dev/ram0 boot=iso9660:/dev/cdroms/cdrom0 stage2init=/sbin/init-lvm-cycle rootlv=/dev/vg00/lvroot0 panic=30
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initrd (fd0)/initrd.gz
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title lvm boot cycle rootlv=/dev/vg00/lvroot1
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kernel (fd0)/bzImage root=/dev/ram0 boot=iso9660:/dev/cdroms/cdrom0 stage2init=/sbin/init-lvm-cycle rootlv=/dev/vg00/lvroot1 panic=30
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initrd (fd0)/initrd.gz
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title lvm boot cycle rootlv=/dev/vg00/lv00
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kernel (fd0)/bzImage root=/dev/ram0 boot=iso9660:/dev/cdroms/cdrom0 stage2init=/sbin/init-lvm-cycle rootlv=/dev/vg00/lv00 panic=30
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initrd (fd0)/initrd.gz
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EOF
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cp -v $GRUBSRC/stage[12] $GRUBSRC/{e2fs,fat,xfs}_stage1_5 $TMPDIR/fd/grub/
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#
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# prepare iso dir
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#
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mkdir $TMPDIR/iso/rescue/
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cp -v $SYSTEM $TMPDIR/iso/rescue/system.tar.bz2
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if [ ! -z "$1" ] ; then
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OVERLAY=$1 ; shift
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cp -v $OVERLAY $TMPDIR/iso/rescue/overlay.tar.bz2
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fi
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if [ "$CREATEDIRS" == "1" ] ; then
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echo "ready. you might want to run:"
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echo "$0 $TMPDIR/iso $TMPDIR/fd"
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elif [ "$CREATEDIRS" == "2" ] ; then
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echo "running $0 $TMPDIR/iso $TMPDIR/fd"
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$0 $TMPDIR/iso $TMPDIR/fd
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rm -rfv $TMPDIR/iso $TMPDIR/fd
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rmdir -v $TMPDIR
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fi
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exit 0
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fi
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ISODIR=$1 ; shift
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test -z "$1" && usage
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FDDIR=$1 ; shift
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test -d $ISODIR || die "ISODIR \"$ISODIR\" not a directory."
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test -d $FDDIR || die "FDDIR \"$FDDIR\" not a directory."
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e2fsimage -f $ISODIR/fdemu.img -d $FDDIR -v -s 2880
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rm -f $ISODIR/device.map-$$
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echo "(fd0) $ISODIR/fdemu.img" > $ISODIR/device.map-$$
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if [ "`id -u`" == "0" ]
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then
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die "i don't want to run grub as root. destructive potential too high."
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fi
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grub --device-map=$ISODIR/device.map-$$ --batch <<EOF
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root (fd0)
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setup (fd0)
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EOF
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rm -fv $ISODIR/device.map-$$
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create_fdemu_image() {
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test -e iso && die "file \"iso\" is in my way."
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mkisofs -b fdemu.img -r -l -d -c boot.catalog \
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-allow-multidot -allow-lowercase -o iso $ISODIR
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}
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create_fdemu_image
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