Linux Kernel Hacking

0.0: Basic LKM Example

This is about as simple as it gets.

To use:

• Build with make and load with make test
• Create a device file with mknod /dev/example c <MAJOR> 0, replacing <MAJOR> with major number returned in the kernel buffer.
• Take a look at the device with cat /dev/example
• Delete the device file with rm /dev/example and unload the module with rmmod example

Followed along from here.