> > #define PRIORITY_FAIL              -1
 > > 
 > > It sounds like we can loads of haggling about the names there... The
 > > last one is to take out the dependency on errno being greater than
 > > zero.
 > 
 > I would actually quite like to keep the possibility of returning an errno.
 > It gives the possibility of returning an appropriate error if something
 > strange happened (other than the hardware not being present).


How do you guarantuee that the errno is positive? Add an assert
somewhere, like checking whether ENXIO >= PRIORITY_FAIL?

Nick
-- 
ISIS/STA, T.P.270, Joint Research Centre, 21020 Ispra, Italy



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