parse_cmdline() {
      for x in $(cat /proc/cmdline); do
          case $x in
              showmounts|show-cow)
                  export SHOWMOUNTS='Yes' ;;
              persistent)
                  export PERSISTENT="Yes" ;;
              nopersistent)
                  export PERSISTENT="" ;;
              union=*)
                  export UNIONFS="${x#union=}";;
              ip*)
                  STATICIP=${x#ip=}
                  if [ "${STATICIP}" = "" ]; then
                      STATICIP="frommedia"
                  fi
                  export STATICIP ;;
              ignore_uuid)
                  IGNORE_UUID="Yes" ;;
              live-media-path=*)
                  LIVE_MEDIA_PATH="${x#live-media-path=}"
                  export LIVE_MEDIA_PATH
                  echo "export LIVE_MEDIA_PATH=\"$LIVE_MEDIA_PATH\"" >> /etc/casper.conf ;;
              toram)
                  export TORAM="Yes" ;;
              todisk=*)
                  export TODISK="${x#todisk=}" ;;
          esac
      done
      if [ "${UNIONFS}" = "" ]; then
          export UNIONFS="aufs"
      fi
}

is_casper_path() {
      path=$1
      if [ -d "$path/$LIVE_MEDIA_PATH" ]; then
          if [ "$(echo $path/$LIVE_MEDIA_PATH/*.squashfs)" != "$path/$LIVE_MEDIA_PATH/*.squashfs" ] ||
              [ "$(echo $path/$LIVE_MEDIA_PATH/*.ext2)" != "$path/$LIVE_MEDIA_PATH/*.ext2" ] ||
              [ "$(echo $path/$LIVE_MEDIA_PATH/*.dir)" != "$path/$LIVE_MEDIA_PATH/*.dir" ]; then
              return 0
          fi
      fi
      return 1
}