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?