#!/bin/sh

# mynewdom <size> <extra args>

SIZE=${1:?"size missing"}

SITE_NFS=128.232.32.20
SITE_GW=128.232.32.1
SITE_MASK=255.255.240.0

shift;

ARGS="$*"

IMAGE=../../../xenolinux-2.4.21-pre4/arch/xeno/boot/image


LASTDOM=`/bin/ls /proc/xeno/ | grep -v cmd | cut -c4- | sort -rn | head -1`
DOM=$[LASTDOM+1]

echo Domain ${DOM} looks free

ADDR=`/sbin/ifconfig eth0 | grep inet.addr | sed -e 's/.*inet addr:\([0-9.]*\) .*/\1/'`
LO=`echo $ADDR | sed -e 's/[0-9]\+\.[0-9]\+\.[0-9]\+\.\([0-9]\+\)/\1/'`
HI=`echo $ADDR | sed -e 's/\([0-9]\+\.[0-9]\+\.[0-9]\+\)\.[0-9]\+/\1/'`
NEWADDR=$HI.$[LO+DOM]

NEWNAME=$NEWADDR
LOOKUP=`host $NEWADDR`
echo $LOOKUP | grep 'domain name pointer' && NEWNAME=`echo $LOOKUP | sed -e 's!.*domain name pointer \([^ ]\+\).$!\1!'`
echo New IP address : ${NEWADDR}  name : ${NEWNAME}

#SITE_GW=`netstat -rn|while read a b c;do case "$a" in 0.0.0.0)echo "$b";;esac;done`
NEWNAME=''
#${NEWADDR}
IP_CONFIG="ip=${NEWADDR}:${SITE_NFS}:${SITE_GW}:${SITE_MASK}:${NEWNAME}:eth0:off"
echo IP_CONFIG : ${IP_CONFIG}

CMDLINE=`cat /proc/cmdline`
case $CMDLINE in
*root=/dev/nfs*)
ROOT_DIR=`echo $CMDLINE | sed -e 's,.*nfsroot=\([^ ]*\).*,\1,'`
ROOT_PATH=`echo $ROOT_DIR | sed -e 's!^\(.*\)[0-9]\+$!\1!'`
ROOT_NUM=`echo $ROOT_DIR | sed -e 's!^.*\([0-9]\+\)$!\1!'`
NEWROOT_DEV="root=/dev/nfs nfsroot=${ROOT_PATH}$[ROOT_NUM+DOM]"
;;
*root=/dev/[hs]d[abcd][0-9]*|*root=/dev/x[hs]d[abcd][0-9]*)
ROOT_DEV=`echo $CMDLINE | sed -e 's!^.*root=\(/dev/[x]*[hs]da[0-9]\+\).*$!\1!'`
ROOT_DISK=`echo $ROOT_DEV | sed -e 's!\(/dev/[x]\?[hs]d[a-z]\)[0-9]\+!\1!'`
ROOT_PART=`echo $ROOT_DEV | sed -e 's!/dev/[x]\?[hs]d[a-z]\([0-9]\+\)!\1!'`
NEWROOT_DEV="root=${ROOT_DISK}$[ROOT_PART+DOM] ro"
;;
*)
echo Could not determine root from /proc/cmdline
exit
;;
esac

echo New root arguments : ${NEWROOT_DEV}

echo ./newdom ${SIZE} ${IMAGE} ${NEWADDR} ${IP_CONFIG} ${NEWROOT_DEV} ${EXTRA_ARGS}

./newdom ${SIZE} ${IMAGE} ${NEWADDR} ${IP_CONFIG} ${NEWROOT_DEV} ${EXTRA_ARGS}