Steps to generate a binary When we write a program using a language like C, it is not C source code which really gets executed. This C code passes through many steps and finally a binary file is generated out of it. This binary file is what gets executed on any computer. There are many steps through which a C code is converted into a binary file:- Pre-processing Compilation Assemble Linking Let’s follow these steps one by one to understand what they do to the C code and how a binary is generated via this....

This is Task 06 of the Eudyptula Challenge ------------------------------------------ Nice job with the module loading macros, those are tricky, but a very valuable skill to know about, especially when running across them in real kernel code. Speaking of real kernel code, let's write some! The task this time is this: - Take the kernel module you wrote for task 01, and modify it to be a misc char device driver. The misc interface is a very simple way to be able to create a character device, without having to worry about all of the sysfs and character device registration mess....

What is a malware? Malware, a portmanteu meaning malicious software, refers to any program that was created with the specific goal of doing harm. Your digital environment is vulnerable to a variety of terrible things, including attempts to compromise your computer or network, leak confidential data, and gain illegal access. These issues can occasionally be brought on by common software defects, but when malware is to blame, it poses a major risk to online users and businesses....

This is Task 05 of the Eudyptula Challenge ------------------------------------------ Yeah, you survived the coding style mess! Now, on to some "real" things, as I know you are getting bored by these so far. So, simple task this time around: - take the kernel module you wrote for task 01, and modify it so that when a USB keyboard is plugged in, the module will be automatically loaded by the correct userspace hotplug tools (which are implemented by depmod / kmod / udev / mdev / systemd, depending on what distro you are using....

This is Task 04 of the Eudyptula Challenge ------------------------------------------ Wonderful job in making it this far, I hope you have been having fun. Oh, you're getting bored, just booting and installing kernels? Well, time for some pedantic things to make you feel that those kernel builds are actually fun! Part of the job of being a kernel developer is recognizing the proper Linux kernel coding style. The full description of this coding style can be found in the kernel itself, in the Documentation/CodingStyle file....