> Why not make your own device? Why do you need to play with the vnode? Only
> the file system is really supposed to play with its operation vector..

It is a cloning device: each time you open it, you get a different
context. You cannot keep track of this using standard driver methods
which have a dev_t as the parameter, because you cannot distinguish
between each context.

-- 
Emmanuel Dreyfus
UNIX *is* user friendly. It is just a bit selective about his friends
manu@netbsd.org