#!/bin/sh
#
# chkconfig: 2345 99 00
# description: Sets up DVM savefile at Dom0 boot
#
### BEGIN INIT INFO
# Provides:          qubes-dvm
# Required-Start:    qubes-networking
# Default-Start:     3 4 5
# Default-Stop:      0 1 2 6
# Default-Enabled:   yes
# Short-Description: Sets up DVM savefile at Dom0 boot
# Description:       Sets up DVM savefile at Dom0 boot
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

start()
{
    echo -n "Setting up DVM savefile at Dom0 boot:"

    printf "\x00\x00\x00\x00" > /var/run/qubes/dispVM_seq
    chown root:qubes /var/run/qubes/dispVM_seq
    chmod 660 /var/run/qubes/dispVM_seq
    ROOT=/var/lib/qubes/dvmdata/savefile_root
    DEFAULT=/var/lib/qubes/dvmdata/default_savefile
    create_neeed=0
    if ! [ -f $DEFAULT ] ; then create_neeed=1 ; fi
    if ! [ -f $ROOT ] ; then create_neeed=1 ; fi
    if [ $ROOT -nt $DEFAULT ] ; then create_neeed=1 ; fi
    if [ $create_neeed = 1 ] ; then
        echo Creating the default DVM. This may take up to 2 minutes...
        qvm-create-default-dvm --default-template --default-script 
        return
    fi   	
    if [ -f /var/lib/qubes/dvmdata/dont_use_shm ] ; then
        ln -s $DEFAULT /var/run/qubes/current_savefile
    else
    	mkdir -m 770 /dev/shm/qubes
    	chown root.qubes /dev/shm/qubes
    	cp $DEFAULT /dev/shm/qubes/current_savefile
    	chown root.qubes /dev/shm/qubes/current_savefile
    	chmod 660 /dev/shm/qubes/current_savefile
    	ln -s /dev/shm/qubes/current_savefile /var/run/qubes/current_savefile
    fi 

    touch /var/lock/subsys/qubes_dvm
    success
    echo

}

stop()
{
    rm -f /var/lock/subsys/qubes_netvm
    success
    echo
}

case "$1" in
  start)
	start
	;;
  stop)
	stop
	;;
  *)
	echo $"Usage: $0 {start|stop}"
	exit 3
	;;
esac

exit $RETVAL