TODO

   1 Whenever
   2 --------
   3 The status determination (on, off, error) should really be the
   4 responsibility of the HDAPS code. Currently, the plugin handles all of
   5 the "on" states. An HdapsState structure might be appropriate.
   6
   7 Replace FILENAME_MAX with something that won't cause problems on
   8 Unices without path length limits.