accessing functions in kernel modules
 

Hi, I've written a module that has some kernel space functions that I'd like to acces using a user space program. Anyone have any experience doing this? I've tried using EXPORT_SYMBOL and extern but that doesn't work, actually I don't think this is how its done anyways. The module sets some parameter that I'd like to control using the program.

Thanks in advance

short answer, you dont. you can use a device file or something in /proc though.

Ok then, would you have any pointers for doing this via /proc or device file? I think /proc would probably be better, what I'm interested in is changing a parameter to invoke a kernel space function that would apply that parameter.

Have you read this great book? Try it, I think it can help.

use open(),write(),read() system call

uh... no.
theyre not ordinary files.
check here , theres a chapter or two on it (chapters 5-7)