#!/bin/sh
NEWROOT=$3
RWDIR=.statelite
XCATMASTER=$XCAT

if [ ! -z "$imgurl" ]; then
	if [ xhttp = x${imgurl%%:*} ]; then
		NFS=0
		FILENAME=${imgurl##*/}
		while [ ! -r "$FILENAME" ]; do
			echo Getting $imgurl...
			if ! wget $imgurl; then
				rm -f $FILENAME
				sleep 27
			fi
		done
	elif [ xnfs = x${imgurl%%:*} ]; then
		NFS=1
		SERVER=${imgurl#nfs:}
		SERVER=${SERVER#/}
		SERVER=${SERVER#/}
		ROOTDIR=$SERVER
		SERVER=${SERVER%%/*}
		SERVER=${SERVER%:}
		ROOTDIR=/${ROOTDIR#*/} 
	fi
fi
#echo 0 > /proc/sys/vm/zone_reclaim_mode #Avoid kernel bug

if [ -r /rootimg.sfs ]; then
  echo Setting up squashfs with ram overlay.
  mknod /dev/loop0 b 7 0
  mkdir -p /ro
  mkdir -p /rw
  mount -t squashfs /rootimg.sfs /ro
  mount -t tmpfs rw /rw
  mount -t aufs -o dirs=/rw:/ro mergedroot $NEWROOT
  mkdir -p $NEWROOT/ro
  mkdir -p $NEWROOT/rw
  mount --move /ro $NEWROOT/ro
  mount --move /rw $NEWROOT/rw
elif [ -r /rootimg.gz ]; then
  echo Setting up RAM-root tmpfs.
  mount -t tmpfs -o mode=755 rootfs $NEWROOT
  cd $NEWROOT
  echo -n "Extracting root filesystem:"
  if [ -x /bin/cpio ]; then
    gzip -cd /rootimg.gz |/bin/cpio -idum
  else
    gzip -cd /rootimg.gz |cpio -idum
  fi
  echo Done
elif [ -r /rootimg-statelite.gz ]; then
  echo Setting up RAM-root tmpfs for statelite mode.
  mount -t tmpfs -o mode=755 rootfs $NEWROOT
  cd $NEWROOT
  echo -n "Extracting root filesystem:"
  if [ -x /bin/cpio ]; then
    gzip -cd /rootimg-statelite.gz |/bin/cpio -idum
  else
    gzip -cd /rootimg-statelite.gz |cpio -idum
  fi
  echo Done
  # then, the statelite staffs will be processed
  echo Setting up Statelite 
  modprobe nfs
  MAXTRIES=7
  ITER=0
  if [ ! -e "$NEWROOT/$RWDIR" ]; then
    echo ""
    echo "The /$RWDIR directory doesn't exist in the rootimg... "
    echo ""
    /bin/sh
  fi

  if [ ! -e "$NEWROOT/etc/init.d/statelite" ]; then
    echo ""
    echo "$NEWROOT/etc/init.d/statelite doesn't exist... "
    echo ""
    /bin/sh
  fi

  mount -t tmpfs rw $NEWROOT/$RWDIR
  mkdir -p $NEWROOT/$RWDIR/tmpfs
  ME=`hostname`

  # mount the SNAPSHOT directory here for persistent use.
  if [ ! -z $STATEMNT ]; then
    SNAPSHOTSERVER=${STATEMNT%:*}
    SNAPSHOTROOT=${STATEMNT#*/}
    if [ -z $SNAPSHOTROOT ]; then
        SNAPSHOTROOT=$SNAPSHOTSERVER
        SNAPSHOTSERVER=
    fi
  fi

  if [ ! -z $SNAPSHOTSERVER ]; then
    mkdir -p $NEWROOT/$RWDIR/persistent
    MAXTRIES=5
    ITER=0
	if [ -z $MNTOPTS ]; then
		MNT_OPTIONS="nolock,rsize=32768,tcp,timeo=14"
	else
		MNT_OPTIONS=$MNTOPTS
	fi
    while ! mount $SNAPSHOTSERVER:/$SNAPSHOTROOT $NEWROOT/$RWDIR/persistent -o $MNT_OPTIONS; do
        ITER=$(( ITER + 1 ))
        if [ "$ITER" == "$MAXTRIES" ]; then
            echo "You are dead, rpower $ME boot to play again."
            echo "Possible problems:
1.  $SNAPSHOTSERVER is not exporting $SNAPSHOTROOT ?
2.  Is DNS set up? Maybe that's why I can't mount $SNAPSHOTSERVER."
            /bin/sh
            exit
        fi
        RS=$(( $RANDOM % 20 ))
        echo "Trying again in $RS seconds ..."
        sleep $RS
    done
  fi

  $NEWROOT/etc/init.d/statelite
  fastboot=yes
  export fastboot
  keep_old_ip=yes
  export keep_old_ip

  mount -n --bind /dev $NEWROOT/dev
  mount -n --bind /proc $NEWROOT/proc
  mount -n --bind /sys $NEWROOT/sys

else
  echo -n Failed to download image, panicing in 5...
  for i in 4 3 2 1 0; do
    /bin/sleep 1
    echo -n $i...
  done
  echo
  echo "You're dead.  rpower nodename reset to play again.

* Did you packimage with -m cpio, -m squashfs, or -m nfs?
* If using -m squashfs did you include aufs.ko with geninitrd?
  e.g.:  -n tg3,squashfs,aufs,loop
* If using -m nfs did you export NFS and sync rootimg?  And
  did you include the aufs and nfs modules in the proper order:
  e.g.:  -n tg3,aufs,loop,sunrpc,lockd,nfs_acl,nfs

"
  /bin/dash
  exit
fi
cd /

if [ -z $STATEMNT ]; then
  for lf in /tmp/dhclient.*.lease; do
    netif=${lf#*.}
    netif=${netif%.*}
    cp $lf  "$NEWROOT/var/lib/dhclient/dhclient-$netif.leases"
  done

  if [ ! -z "$ifname" ]; then
    MACX=${ifname#*:}
    ETHX=${ifname%:$MACX*}
  elif [ ! -z "$netdev" ]; then
    ETHX=$netdev
    MACX=`ip link show $netdev | grep ether | awk '{print $2}'`
  elif [ ! -z "$BOOTIF" ]; then
    MACX=$BOOTIF
    ETHX=`ifconfig |grep -i $BOOTIF | awk '{print $1}'`
  fi

  if [ ! -z "$MACX" ] && [ ! -z "$ETHX" ]; then
    if [ ! -e $NEWROOT/etc/sysconfig/network-scripts/ifcfg-$ETHX ]; then
        touch $NEWROOT/etc/sysconfig/network-scripts/ifcfg-$ETHX
    fi
    echo "DEVICE=$ETHX" > $NEWROOT/etc/sysconfig/network-scripts/ifcfg-$ETHX
    echo "BOOTPROTO=dhcp" >> $NEWROOT/etc/sysconfig/network-scripts/ifcfg-$ETHX
    echo "HWADDR=$MACX" >> $NEWROOT/etc/sysconfig/network-scripts/ifcfg-$ETHX
    echo "ONBOOT=yes" >> $NEWROOT/etc/sysconfig/network-scripts/ifcfg-$ETHX
  fi
fi

cp /etc/resolv.conf "$NEWROOT/etc/"

if [ -d "$NEWROOT/etc/sysconfig" -a ! -e "$NEWROOT/etc/sysconfig/selinux" ]; then
	echo "SELINUX=disabled" >> "$NEWROOT/etc/sysconfig/selinux"
fi

# inject new exit_if_exists
echo 'settle_exit_if_exists="--exit-if-exists=/dev/root"; rm "$job"' > /initqueue/xcat.sh
# force udevsettle to break
> /initqueue/work
