#!/bin/bash ################################################################################ # Mknfsinitrd Creates an initial ramdisk image for NFS boot # T.Barnaby, BEAM Ltd, 14/2/04 # Some functions taken from /sbin/mkinitrd ################################################################################ # busyboxProgs="[ ash awk basename bunzip2 bzcat cat chgrp chmod\ chown chroot chvt clear cmp cp cut date dd deallocvt\ df dirname dmesg du echo egrep env expr false fgrep\ find free grep gunzip gzip halt head hexdump hostid hostname\ id ifconfig init insmod install ipaddr kill killall klogd\ linuxrc ln logger ls lsmod mkdir mknod mkswap mktemp\ modprobe more mount mv openvt pidof ping pivot_root poweroff\ ps pwd readlink reboot reset rm rmdir rmmod route sed\ sh sleep sort strings swapoff swapon sync syslogd tail\ tar tee test time touch tr true tty udhcpc umount uname uniq\ unzip uptime usleep vi wc wget which whoami xargs yes\ zcat stat switch_root" baseDir="" kernelVersion="" verbose="-v" target="" builtins="" ############################################################################## # Script files ############################################################################## # fileInit(){ cat <<"EOF" #!/bin/sh ################################################################################ # Init.rc Diskless NFS boot init script # T.Barnaby, BEAM Ltd, 16/2/05 ################################################################################ #

modules="e1000 e1000e igb nfsv3 nfsv4"

echo "BEAM Diskless boot starting ..." #mount -n -o remount,rw / mount -n -t proc /proc /proc mount -n -t sysfs none /sys mount -n -t tmpfs /dev/shm /tmp #/bin/sh echo "Loading modules" for m in $modules; do

modprobe $m

done #/bin/sh echo "Seting up network interface" while true; do

if udhcpc -s /dhcpConfig -f -n -q -O 17 -i eth0; then break; fi if udhcpc -s /dhcpConfig -f -n -q -O 17 -i eth1; then break; fi

done . /tmp/dhcpInfo if [ -n "$dhcp_hostname" ]; then hostname $dhcp_hostname fi #/bin/sh echo "Mounting root filesystem" mount -n -t rpc_pipefs sunrpc /var/lib/nfs/rpc_pipefs

echo "Hostname: $dhcp_hostname" echo "Rootpath: $dhcp_rootpath"

mount -n -r -t nfs -o async,nolock $dhcp_rootpath /sysroot

# Debug #mount -n -r -t nfs -o async,nolock 192.168.202.1:/home/terry/cern/rootfs /sysroot #mount -n -r -t nfs -o async,nolock 192.168.201.1:/usr/tms/rootfs-1 /sysroot

#/bin/sh echo "Switching to new root" echo 0x100 > /proc/sys/kernel/real-root-dev umount /var/lib/nfs/rpc_pipefs umount /sys umount /proc umount /tmp

#/bin/sh

echo "Doing switch_root" exec switch_root /sysroot /sbin/init EOF } fileDhcpConfig(){ cat <<"EOF" #!/bin/sh ################################################################################ # dhcpConfig Sets up network interface # T.Barnaby, BEAM Ltd, 16/2/05 ################################################################################ # configureNetwork(){ ifconfig $interface $ip if [ -n "$router" ]; then route add default gw $router fi echo "dhcp_interface=$interface" > /tmp/dhcpInfo echo "dhcp_ip=$ip" >> /tmp/dhcpInfo echo "dhcp_mask=$mask" >> /tmp/dhcpInfo echo "dhcp_subnet=$subnet" >> /tmp/dhcpInfo echo "dhcp_broadcast=$broadcast" >> /tmp/dhcpInfo echo "dhcp_router=$router" >> /tmp/dhcpInfo echo "dhcp_dns=$dns" >> /tmp/dhcpInfo echo "dhcp_namesvr=$namesvr" >> /tmp/dhcpInfo echo "dhcp_hostname=$hostname" >> /tmp/dhcpInfo echo "dhcp_domain=$domain" >> /tmp/dhcpInfo echo "dhcp_siaddr=$siaddr" >> /tmp/dhcpInfo echo "dhcp_rootpath=$rootpath" >> /tmp/dhcpInfo echo "dhcp_timesvr=$timesvr" >> /tmp/dhcpInfo echo "dhcp_ntpsrv=$ntpsrv" >> /tmp/dhcpInfo echo "dhcp_tftp=$tftp" >> /tmp/dhcpInfo echo "dhcp_timezone=$timezone" >> /tmp/dhcpInfo echo "dhcp_logsvr=$logsvr" >> /tmp/dhcpInfo echo "dhcp_swapsvr=$swapsvr" >> /tmp/dhcpInfo } case $1 in deconfig) ifconfig $interface 0.0.0.0;; bound) configureNetwork;; esac exit 0 EOF } ############################################################################## # Functions ############################################################################## # inst() { if [ "$#" != "2" ];then echo "usage: inst <file> <destination>" return fi [ -n "$verbose" ] && echo "cp $1 -> $2" cp $1 $2 } usage () { echo "usage: `basename $0` [-v][-d baseDir] <initrd-image> <kernel-version>" >&2 echo "" >&2 echo " (ex: `basename $0` initrd-2.6.10-1.760_FC3 2.6.10-1.760_FC3)" >&2 exit 1 } ############################################################################## # Main code ############################################################################## # while [ $# -gt 0 ]; do case $1 in -v) verbose=-v ;; -d) shift baseDir=$1 ;; *) if [ -z "$target" ]; then target=$1 elif [ -z "$kernelVersion" ]; then kernelVersion=$1 else usage fi ;; esac shift done echo "BaseDir: $baseDir"; if [ -z "$target" -o -z "$kernelVersion" ]; then usage fi if [ ! -d $baseDir/lib/modules/$kernelVersion ]; then echo "$baseDir/lib/modules/$kernelVersion is not a directory." >&2 exit 1 fi if false; then if [ $UID != 0 ]; then echo "mknfsinitrd must be run as root" exit 1 fi fi # find a temporary directory which doesn't use tmpfs TMPDIR="" for t in /tmp /var/tmp /root ${PWD}; do if [ ! -d $t ]; then continue; fi if ! echo access -w $t; then continue; fi fs=$(df -T $t 2>/dev/null | awk '{line=$1;} END {printf $2;}') if [ "$fs" != "tmpfs" ]; then TMPDIR=$t break fi done if [ -z "$TMPDIR" ]; then echo "no temporary directory could be found" >&2 exit 1 fi if [ $TMPDIR = "/root" -o $TMPDIR = "${PWD}" ]; then echo "WARNING: using $TMPDIR for temporary files" >&2 fi #echo "TMPDIR: $TMPDIR" #exit 0 ############################################################################## # Main wor ############################################################################## # MNTIMAGE=`mktemp -d ${TMPDIR}/initrd.XXXXXX` IMAGE=`mktemp ${TMPDIR}/initrd.img.XXXXXX` #MNTIMAGE=/tmp/initrd if [ -z "$MNTIMAGE" -o -z "$IMAGE" ]; then echo "Error creating temporaries. Try again" >&2 exit 1 fi echo "MNTIMAGE: $MNTIMAGE" mkdir -p $MNTIMAGE mkdir -p $MNTIMAGE/lib

mkdir -p $MNTIMAGE/lib64

mkdir -p $MNTIMAGE/bin mkdir -p $MNTIMAGE/etc mkdir -p $MNTIMAGE/dev mkdir -p $MNTIMAGE/proc mkdir -p $MNTIMAGE/sys mkdir -p $MNTIMAGE/sysroot mkdir -p $MNTIMAGE/usr mkdir -p $MNTIMAGE/usr/bin mkdir -p $MNTIMAGE/usr/sbin mkdir -p $MNTIMAGE/var mkdir -p $MNTIMAGE/var/lib/nfs/rpc_pipefs mkdir -p $MNTIMAGE/tmp rm -f $MNTIMAGE/sbin ln -s bin $MNTIMAGE/sbin # Install needed programs #inst /sbin/nash "$MNTIMAGE/bin/nash" #inst /sbin/insmod.static "$MNTIMAGE/bin/insmod" #ln -s /sbin/nash $MNTIMAGE/sbin/modprobe #inst /bin/bash $MNTIMAGE/bin #ln -s bash $MNTIMAGE/bin/sh # Test progs if false; then # Install libs inst /lib/libtermcap.so.2 $MNTIMAGE/lib inst /lib/libdl.so.2 $MNTIMAGE/lib inst /lib/libc.so.6 $MNTIMAGE/lib inst /lib/ld-linux.so.2 $MNTIMAGE/lib #inst /sbin/ifconfig $MNTIMAGE/bin/ifconfig1 #inst /bin/dmesg $MNTIMAGE/bin inst /usr/bin/strace $MNTIMAGE/bin #inst /sbin/lsmod $MNTIMAGE/bin fi # Install busybox

inst /src/cern/tms-mcsys/rootfs/bin/busybox $MNTIMAGE/bin/busybox

for p in $busyboxProgs; do ln -sf busybox $MNTIMAGE/bin/$p done if false; then

inst /lib64/linux-vdso.so.1 $MNTIMAGE/lib64 inst /lib64/libm.so.6 $MNTIMAGE/lib64 inst /lib64/libc.so.6 $MNTIMAGE/lib64 inst /lib64/ld-linux-x86-64.so.2 $MNTIMAGE/lib64 fi if true; then #inst /lib/linux-gate.so.1 $MNTIMAGE/lib inst /lib/libm.so.6 $MNTIMAGE/lib inst /lib/libc.so.6 $MNTIMAGE/lib inst /lib/ld-linux.so.2 $MNTIMAGE/lib

fi

# Copy modules mkdir -p $MNTIMAGE/lib/modules cp -a $baseDir/lib/modules/$kernelVersion $MNTIMAGE/lib/modules

#touch $MNTIMAGE/etc/fstab # Setup udev #inst /sbin/udev.static $MNTIMAGE/sbin/udev #ln -s udev $MNTIMAGE/sbin/udevstart #mkdir -p $MNTIMAGE/etc/udev #inst /etc/udev/udev.conf $MNTIMAGE/etc/udev/udev.conf #ln -s /sbin/nash $MNTIMAGE/sbin/hotplug # Create rc script filea fileInit > $MNTIMAGE/init fileDhcpConfig > $MNTIMAGE/dhcpConfig chmod +x $MNTIMAGE/init chmod +x $MNTIMAGE/dhcpConfig (cd $MNTIMAGE; find . | cpio --quiet -c -o) > $IMAGE gzip -9 < $IMAGE > $target || rc=1 rm -rf $MNTIMAGE $IMAGE exit 0