>> What kind of kernel functionality can be modified by an LKM?
> device drivers, system calls and file systems, i believe.  look in
> /usr/share/lkm for examples.

Well, those are the "officially supported" ones.  Once you have
user-supplied code running with full privilege, it is fully empowered
and can do anything up to and including replacing the kernel in toto.

					der Mouse

			    mouse@collatz.mcrcim.mcgill.edu