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#! /bin/bash
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# $Id$
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#*********************************************************************
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#
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# make-fai-bootfloppy -- create a boot floppy for FAI
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#
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# This script is part of FAI (Fully Automatic Installation)
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# (c) 2000-2003 by Thomas Lange, lange@informatik.uni-koeln.de
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# Universitaet zu Koeln
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#
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#*********************************************************************
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# A copy of the GNU General Public License is available as
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# `/usr/share/common-licences/GPL' in the Debian GNU/Linux distribution
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# or on the World Wide Web at http://www.gnu.org/copyleft/gpl.html. You
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# can also obtain it by writing to the Free Software Foundation, Inc.,
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# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#*********************************************************************
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version="version 2.0.1, 6-feb-2003"
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set -e
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timeout=15
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mkimage=0
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floppydev=/dev/fd0
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mountpoint=/floppy
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mountopts=""
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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umount_dirs() {
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cd /
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umount "$mountpoint" 2>/dev/null || true
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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die() {
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echo -e "$@"
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exit 99
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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determine_kernel_version() {
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local num all
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all=$(ls $NFSROOT/boot/vmlinuz-*)
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if [ `echo $all | wc -l` = 1 ]; then
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KERNELVERSION=$(echo "kernel version $all" | sed -e 's#.*/vmlinuz-##')
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else
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die "Can't determine kernel version for $all"
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fi
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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usage() {
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cat <<EOF
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make-fai-bootfloppy, create a boot floppy for FAI. $version
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Copyright (C) 2000-2003 by Thomas Lange
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Usage: make-fai-bootfloppy [parameter]
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-d label use label when selection the default boot kernel (and parameters).
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d for DHCP
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b for BOOTP
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f for the fixed IP address for the server
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Without this option both (dhcp and booth) are used
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-h print this message.
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-f file make a 1440k floppy image
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-m dir use dir as mountpoint [/floppy]
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-s host use a static ip for host (try to get from DNS)
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-v print verbose output (print lilo.conf)
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DESCRIPTION
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Creates a boot floppy for booting a FAI install client.
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No arguments are needed but you must be root.
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All parameters are passed to the kernel via append in lilo.conf.
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EXAMPLE
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Create a generic boot floppy for James ;-)
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# make-fai-bootfloppy "FAI_FLAGS=verbose,createvt,sshd BOND=007"
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To make a boot floppy for my old SMC EtherCard Plus Elite 16T, I use
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# make-fai-bootfloppy "reserve=0x300,32 ether=10,0x300,eth0"
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To make a boot floppy using the DHCP protocol
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# make-fai-bootfloppy -d d
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EOF
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exit 0
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - -
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determine_network_parameters() {
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ndevices=0
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devices=`egrep -v "lo:|^Inter-|^ face" /proc/net/dev | awk -F: '{print $1}'`
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for dev in $devices; do
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ndevices=$(($ndevices+1))
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done
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[ $ndevices = 0 ] && die "No network interface found. Can't determine IP address."
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if [ $ndevices = 1 ]; then
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SERVERINTERFACE=$dev
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else
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while [ -z "$SERVERINTERFACE" ]; do
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echo "Your machine has multiple network interfaces: $devices"
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echo -n "Specify which one will be used for FAI (e.g. eth1): "
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read SERVERINTERFACE
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done
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fi
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SERVERIP=`LC_ALL=C ifconfig $SERVERINTERFACE | perl -ne '/inet addr:([0-9\.]+)/ && print $1'`
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echo "Using interface $SERVERINTERFACE with IP address: $SERVERIP"
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if [ -n "${TARGETHOST}" ] ; then
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BROADCAST=`LC_ALL=C ifconfig $SERVERINTERFACE | perl -ne '/Bcast:([0-9\.]+)/ && print $1'`
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NETMASK=`LC_ALL=C ifconfig $SERVERINTERFACE | perl -ne '/Mask:([0-9\.]+)/ && print $1'`
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GATEWAY=`LC_ALL=C route -n | grep '^0\.0\.0\.0' | awk '{ print $2 }'`
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TARGETIP=`host -t a ${TARGETHOST} 2> /dev/null | awk '{print $3}'`
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fixedparams="ip=${TARGETIP}:${SERVERIP}:${GATEWAY}:${NETMASK}:${TARGETHOST}::off"
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fi
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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lilo_floppy() {
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# make a boot floppy using lilo
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echo "Using lilo for the boot floppy."
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mkdir $mountpoint/boot $mountpoint/etc
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rmdir $mountpoint/lost+found
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cd $NFSROOT && cp -dp boot/boot-menu.b boot/vmlinuz-$KERNELVERSION $mountpoint/boot
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ln -s boot/vmlinuz-$KERNELVERSION $mountpoint/vmlinuz
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ln -fs $mountpoint/boot/boot-menu.b $mountpoint/boot/boot.b
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[ $mkimage -eq 1 ] && cat > $mountpoint/etc/lilo.conf <<-EOF
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disk=$(mount | grep $mountpoint | sed -e 's/.*loop=\([^)]*\))/\1/')
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bios=0x00
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cylinders=80
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heads=2
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sectors=18
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EOF
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cat >> $mountpoint/etc/lilo.conf <<-EOF
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boot=$floppydev
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install=$mountpoint/boot/boot-menu.b
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map=$mountpoint/boot/map
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delay=$timeout
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compact
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read-only
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default=$lilodef
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image=$mountpoint/vmlinuz
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append="ip=both root=/dev/nfs $params"
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label=FAI-BOTH
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image=$mountpoint/vmlinuz
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append="ip=bootp root=/dev/nfs $params"
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label=FAI-BOOTP
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image=$mountpoint/vmlinuz
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append="ip=dhcp root=/dev/nfs $params"
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label=FAI-DHCP
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image=$mountpoint/vmlinuz
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label=FAI-FIXED-IP
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append="root=$SERVERIP:$NFSROOT ip=both $fixedparams $params"
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EOF
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$NFSROOT/sbin/lilo -C $mountpoint/etc/lilo.conf
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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grub_floppy() {
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echo "Using grub for the boot floppy."
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# make a boot floppy using grub
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kernel=vmlinuz-$KERNELVERSION
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mkdir -p $mountpoint/boot/grub
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cp -p /usr/lib/grub/i386-pc/stage? $mountpoint/boot/grub
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cp $NFSROOT/boot/$kernel $mountpoint
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grubconf="
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default $grubdef
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#default saved
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timeout $timeout
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title FAI-BOTH
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kernel (fd0)/$kernel root=/dev/nfs ip=both $params
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savedefault
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title FAI-BOOTP
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kernel (fd0)/$kernel root=/dev/nfs ip=bootp $params
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savedefault
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title FAI-DHCP
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kernel (fd0)/$kernel root=/dev/nfs ip=dhcp $params
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savedefault
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title FAI-FIXED-IP
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kernel (fd0)/$kernel root=$SERVERIP:$NFSROOT ip=both $fixedparams $params
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savedefault
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"
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echo "$grubconf" > $mountpoint/boot/grub/menu.lst
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umount $mountpoint
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grub --batch --device-map=/dev/null >/dev/null <<EOF
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device (fd0) $floppydev
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root (fd0)
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setup (fd0)
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quit
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EOF
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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# main part
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while getopts "lgvf:s:m:hd:" opt ; do
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case "$opt" in
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l) lilo=1 ;;
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g) grub=1 ;;
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h) usage ;;
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f) mkimage=1; floppydev="$OPTARG" ;;
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m) mountpoint="$OPTARG" ;;
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s) TARGETHOST="$OPTARG" ;;
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d) BTYPE="$OPTARG" ;;
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v) verbose=1 ;;
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?) echo "Error parsing arguments"; exit 1;;
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esac
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done
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shift `expr $OPTIND - 1`
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case "$BTYPE" in
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b) lilodef=FAI-BOOTP ; grubdef=1 ;;
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d) lilodef=FAI-DHCP ; grubdef=2 ;;
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f) lilodef=FAI-FIXED-IP ; grubdef=3 ;;
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*) lilodef=FAI-BOTH ; grubdef=0 ;;
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esac
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[ $lilo ] && [ $grub ] && die "Specify only one of -l or -g"
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[ $lilo ] || [ $grub ] || grub=1
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[ `id -u` -eq 0 ] || die "You must be root! Or try $0 -h"
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trap "umount_dirs" EXIT
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# additional kernel parameter
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params="$@"
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. /etc/fai/fai.conf
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determine_kernel_version
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determine_network_parameters
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if [ $mkimage -eq 1 ]; then
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[ -e $floppydev ] && die "$floppydev already exists. Please remove it and restart again."
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dd if=/dev/zero of=$floppydev bs=1024 count=1440
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mountopts="$mountopts -o loop"
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mkfsopt=-F
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fi
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# pay attention: if -i option is too large, then too few inodes
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# are created on the floppy. Check it with df -i
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mke2fs $mkfsopt -q -i 40000 -m 0 $floppydev || \
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die "Can't create ext2 file system on $floppydev"
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mount $mountopts $floppydev $mountpoint || die "Can't mount floppy $floppydev"
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[ $lilo ] && lilo_floppy
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[ $grub ] && grub_floppy
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cat <<-EOF
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Writing boot data to floppy. The default boot label is: $liloboot
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The kernel configuration is $NFSROOT/boot/config-$KERNELVERSION.
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EOF
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[ "$params" ] && echo "Additional kernel parameters: $params"
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[ "$verbose" ] && [ $lilo ] && {
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echo "The lilo.conf is:"
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echo
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cat $mountpoint/etc/lilo.conf
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}
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[ "$verbose" ] && [ $grub ] && {
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echo "The grub menu is:"
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echo
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echo "$grubconf"
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}
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