This is Task 07 of the Eudyptula Challenge ------------------------------------------ Great work with that misc device driver. Isn't that a nice and simple way to write a character driver? Just when you think this challenge is all about writing kernel code, this task is a throwback to your second one. Yes, that's right, building kernels. Turns out that's what most developers end up doing, tons and tons of rebuilds, not writing new code....
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....
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....
This is Task 03 of the Eudyptula Challenge ------------------------------------------ Now that you have your custom kernel up and running, it's time to modify it! The tasks for this round is: - take the kernel git tree from Task 02 and modify the Makefile to and modify the EXTRAVERSION field. Do this in a way that the running kernel (after modifying the Makefile, rebuilding, and rebooting) has the characters "-eudyptula" in the version string....