Hi, I am currently extending my asmc driver (in kernel) to listen to a userland utility (asmcctl). I want to be able to e.g. tell the kernel asmc driver to increase/decrease backlight. Now I need to get this "brightness integer" from userland (everybody should be able to do this without privilegdes) to the kernel module. I went through the recommended docs:
An Introductory 4.4BSD Interprocess Communication Tutorial An Advanced 4.4BSD Interprocess Communication Tutorial Does IPC apply for calls between kernel and userland? Or is the syscall framework the right path ? (man 9 syscall). Trying to proceed, I could only find two additional docs explaining some principles: 1. NetBSD Documentation: Writing a pseudo device 2. OpenBSD Loadable Kernel Modules (well, I don't really wand a lkm...). I was thinking to use s.th. like wsconsctl or the usr.bin/radioctl/radioctl.c and sys/dev/radio.c, but got stuck on that machine independent stuff (struct device * radio_attach_mi ...). Can someone point me to the right direction ? thx Volker
