Getting hal to invoke callouts

[Phillip Susi]

I have been trying to get the hal to make a callout to an external 
utility required to configure detected cdrw drives, and can't get it to 
to work.  I have created the following hal fdi policy file:

<?xml version="1.0" encoding="UTF-8"?> <!-- -*- SGML -*- --> 

<deviceinfo version="0.2">
  <device>
    <match key="storage.cdrom.cdrw" bool="true">
      <match key="block.is_volume" bool="false">
        <merge key="info.callouts.add" type="string">/home/psusi/dump</merge>
      </match>
    </match>
  </device>
</deviceinfo>

dump is an executable shell script I wrote just to dump the parameters 
and environment to log files so I can inspect them, but the log files 
never get created.  What am I doing wrong with the policy files? 

My goal here is to write a policy file that will have the hal run 
pktsetup on detected cdrw devices to create a packet writing virtual 
device, which allows you to mount a cdrw disc in full read/write mode 
like a giant floppy.  I also need to get the hal to invoke a callout 
when media is detected in such drives to look at the track info and 
decide if it has been formatted for packet mode, and if so, apply some 
merge fdi rules to change block.device, block.major, block.minor, and 
block.sysfs_path so that the disc is correctly auto mounted in 
read/write mode via the pktcdvd device node.