How to use path with resource manager

ddowens · August 23, 2004, 4:51pm

I’ve gotten as far as being able to open a resource manager using
‘cat /dev/sample’ (for example)
and I can set it to respond to /dev/sample/extpath or
/dev/sample/extpaht/morepath and it is relatively easy to extract the path info in the open callback. What is less clear is how to associate this path with subsequent read or write calls … how to make cat /dev/sample/funca do something different from cat /dev/sample/funcb. Are there any examples floating around out there?

Thanks,
Doug Owens

rick · August 23, 2004, 5:05pm

Rob Krten has great examples (including source code) of working resource maangers in his latest book. Take a look at www.parse.com - if you are writing resource managers, they are worth buying.

Rick…

noc · August 23, 2004, 6:31pm

Yes, Rob’s Getting Started with QNX Neutrino 2 – A Guide for Realtime Programmers is definitely helpful.

ddowens · August 23, 2004, 11:07pm

Thanks,
I have access to a copy of the book but we are sharing it among several people (more books on order). I did get a copy of atoz.c which I think shows how to do what I am asking about.