Any way to catch exit()?

[Bob Pendleton]

I'd have thought this was trivial, except that I've spent 2 days
RTFMing and can't find the answer.

I'm writing a library that needs to do some clean up when the program
that is using it is done. Just because I'm such a nice guy I'd like to
let the user program just terminate, any old way, a signal or by
exit() and just automagically do the clean up. Well I can catch a
signal, but I haven't found a portable way to "catch" exit(). I found
the SunOS on_exit() routine, nice. But ULTRIX doesn't seem to have
one, and I've been told that this is going to have to port to System
V.

So, is there a portable way for a routine to dectect when the program
it is part of is trying to exit()?


			Bob P.
-- 
Bob Pendleton @ Evans & Sutherland
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