#!/bin/sh
#
# chkconfig: 2345 82 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
    DEFAULT=/var/lib/qubes/dvmdata/default_savefile
    # setup DispVM files only when they exists
    if [ -r $DEFAULT ]; then
        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 -a $(readlink $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
    fi

    touch /var/lock/subsys/qubes_setupdvm
    success
    echo

}

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

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

exit $RETVAL