[launchd-dev] OnDemand USB Software

[Mike Fischer]

Hi!

I'm trying to evaluate if it is feasable to have an on-demand daemon  
depend on the presence of a certain usb device. I.e. I'd like the  
daemon to launch when the USB-device is plugged in.

So far, looking at tn2083 and the man pages, I don't see any way to  
have a depency on USB or IOKit in general. Am I missing something here?


If there is no direct support would it make sense to have a very  
small, lightweight daemon always running that registers for IOKit  
IOServiceAddMatchingNotification notifications and creates a  
semaphore file that can be used to trigger the launch of the real  
daemon for example?


BTW: This would be mainly for Leopard, although Tiger would be  
interesting too.


Thanks!
Mike
-- 
Mike Fischer         Softwareentwicklung, EDV-Beratung
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Web: <http://homepage.mac.com/mike_fischer/index.html>
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