You might be able to just put a call to Debugger() in tdopen...

		David/absolute

  -=-  "Old Red he died, and every single landlord in the district cried"  -=-

On Tue, 6 Jul 1999, Steven Grunza wrote:

> Well, I'm now to the point where my driver appears to be called at 
> tdattach() and tdopen() but it isn't working correctly.  The 
> character device associated with /dev/td0 should return a test 
> message but it doesn't.
> 
> root@hw-ss1# dd if=/dev/td0 of=/tmp/t bs=1 count=20
> td:  tdopen() called.
> dd: /dev/td0: Operation not permitted
> 0+0 records in
> 0+0 records out
> 0 bytes transferred in 1 secs (0 bytes/sec)
> 
> 
> So how do I debug this?  I need the debugger to kick in when I enter 
> the tdopen() routine.
> 
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