#!/bin/bash

# Copy the disk image's executable over the existing EngineRunner
# executable.  This is safe to do.  The old executable is still open
# and mapped, so won't be disturbed.  It doesn't load any resources
# either.

# Make sure we have the KS_TICKET_XC_PATH enviornment variable.
# This is taken from the ticket.
if [ "${KS_TICKET_XC_PATH:=undefined}" = "undefined" ]; then
  echo "D'oh!  The ticket doesn't have an existence checker path."
  echo "That path is used to figure out which EngineRunner to update"
  exit 1

else
  # Run the copy.
  cp "$1/EngineRunner" "${KS_TICKET_XC_PATH}"

  # Did it succeed?
  if [ $? != 0 ]; then
    echo "D'oh!  Copy command to ${KS_TICKET_XC_PATH} failed."
    echo "Are the destination permissions ok?"
    exit 1
  fi
fi

# Happiness and light.
exit 0