#!/bin/bash

echo "pl_sysinit: bringing system online"

echo "pl_sysinit: mounting file systems"
/bin/mount -v -a

echo "pl_sysinit: invoking hardware initialization script"
/etc/init.d/pl_hwinit

echo "pl_sysinit: finding cd to mount on /usr"
test_devices=/sys/block/*
mounted=0
initrd_version=$(/bin/cat /pl_version)
mkdir /usr

for device in $test_devices; do
    device=$(/bin/basename $device)

    # skipping any devices that start with md or ra (ram) or lo (loop) or
    # fd (floppy)
    start_device=${device:0:2}
    if [ "$start_device" == "ra" ] || [ "$start_device" == "md" ] ||
	[ "$start_device" == "lo" ] || [ "$start_device" == "fd" ]; then
	continue
    fi
    
    echo "pl_sysinit: checking $device for /usr contents"
    /bin/mount -o ro -t iso9660 /dev/$device /usr 2>&1 > /dev/null
    if [ $? -eq 0 ]; then
	# it mounted, but we should probably make sure its our boot cd
	# this can be done by making sure the /pl_version file (on initrd)
	# matches /usr/isolinux/pl_version
	cd_version=$(/bin/cat /usr/isolinux/pl_version)

	if [ "$initrd_version" != "$cd_version" ]; then
	    # eh, wrong cd, keep trying
	    /bin/umount /usr 2>&1 /dev/null
	else
	    echo "pl_sysinit: found cd and mounted on /usr"
	    mounted=1
	    break
	fi
    fi
done

echo "pl_sysinit: configuring kernel parameters"
/sbin/sysctl -e -p /etc/sysctl.conf

echo "pl_sysinit: bringing network online"
/etc/init.d/pl_netinit

# check for nfs mount
if [ $mounted -eq 0 -a -f "/etc/planetlab/nfs_server" ]; then
	echo "pl_sysinit: starting portmap"
	/sbin/portmap
	sleep 3
	nfs_server=$(cat /etc/planetlab/nfs_server)
	/bin/mount -t nfs -o nfsvers=2 ${nfs_server}:/planetlab/bootcd /usr
    	if [ $? -ne 0 ]; then
		bash
	else
		# it mounted, but we should probably make sure its our boot cd
		# this can be done by making sure the /pl_version file (on initrd)
		# matches /usr/isolinux/pl_version
		cd_version=$(/bin/cat /usr/isolinux/pl_version)

		if [ "$initrd_version" != "$cd_version" ]; then
	    		# eh, wrong cd, keep trying
			echo "pl_sysinit: wrong version $initrd_version != $cd_version"
	    		/bin/umount /usr 2>&1 /dev/null
		else
	    		echo "pl_sysinit: found cd on nfs server and mounted on /usr"
	    		mounted=1
		fi
		if [ $mounted -eq 1 ] ; then
			read i0 i1 i2 i3 m0 m1 m2 m3 < \
	    			<(IFS=. ; echo $(ifconfig eth0 | sed -ne "s/.*inet addr:\([^ ]*\).*Mask:\([^ ]*\).*/\1.\2/p"))
			realaddr="$i0.$i1.$i2.$i3"
			mkdir -p /tmp/conffilemount
			/bin/mount -t nfs -o nfsvers=2 ${nfs_server}:/planetlab/nodes/${realaddr} /tmp/conffilemount
			if [ $? -eq 0 ] ; then
				cp /tmp/conffilemount/plnode.txt /tmp
			else
				/bin/umount /usr 2>&1 /dev/null
				mounted=0
			fi
		fi
	fi
fi

if [ $mounted -eq 0 ]; then
    echo "pl_sysinit: unable to find boot cdrom, cannot continue."
    # todo: maybe we can put a staticly linked sshd here
    /sbin/shutdown -h now
fi


# parts of this were copied from devmap_mknod.sh from the device-mapper
# source. Since fedora decided not to include it in the rpm, it is 
# being copied here
echo "pl_sysinit: creating device mapper control node"

DM_DIR="mapper"
DM_NAME="device-mapper"
DIR="/dev/$DM_DIR"
CONTROL="$DIR/control"

MAJOR=$(sed -n 's/^ *\([0-9]\+\) \+misc$/\1/p' /proc/devices)
MINOR=$(sed -n "s/^ *\([0-9]\+\) \+$DM_NAME\$/\1/p" /proc/misc)

if [ -n "$MAJOR" ] && [ -n "$MINOR" ]; then
    /bin/mkdir -p --mode=755 $DIR
    /bin/rm -f $CONTROL
    /bin/mknod --mode=600 $CONTROL c $MAJOR $MINOR
else
    echo "pl_sysinit: unable to create device mapper control node, continuing"
fi