The Linux Kernel Module Programming Guide is a free book; you may reproduce and/or modify it under the terms of the Open Software License, version 1.1. You can obtain a copy of this …

File System Interface Review Kernel file system code offers standard operations on files (common file model) open, close, read, write, llseek, ioctl, poll, flush, etc. User program requests …

Kernel modules: presentation General information Modules are pieces of kernel code that can be dynamically loaded and unloaded at runtime No need to reboot Appeared in Linux 1.2 (1995)

Fortunately, Linux developers already did the dirty work for us! Even external (out-of-tree) modules! After loading the module, the application is started!

To use this technology, kernel modules must be packaged into Kernel Module Packages (KMPs) as defined in this document.

Where can I find definitions of these functions? No comma between them! Can be called from just about anywhere at any time...

Kernel Modules Allow code to be added to the kernel, dynamically Only those modules that are needed are loaded. Unload when no longer required - frees up memory and other resources …