Working with the Linux kernel

Using the exercise files

Prerequisites and takeaways

What is the Linux kernel

Discover and control hardware

Challenge Hardware

Solution Hardware

System calls in-depth

Challenge System calls (syscalls)

Solution System calls (syscalls)

Read messages from the kernel and proc

Challenge kernel messages and proc

Solution kernel messages and proc

Introduction to sys

Solution sysfs

Device drivers and device files

Challenge Drivers and device files

Solution Drivers and device files

Understanding the bootloader GRUB

Configuring GRUB

Kernel command line parameters

Demo kernel command line args

Process 1 and start-up services

Challenge GRUB, command line parameters, boot sequence

Solution GRUB, command line parameters, boot sequence

Loadable kernel modules (LKMs)

Finding the LKMs

Challenge Finding LKMs

Solution Finding LKMs

Using LKM Commands

Challenge Working with LKM commands

Solution Working with LKM commands

LKM Dependencies & Use Count

Challenge Working with module dependencies and counts

Solution Working with module dependencies and counts

How LKMs and writing LKMs work

Challenge How LKMs work

Solution How LKMs work

Getting Linux kernel source code

Explore the kernel makefile

Examine and build kernel documentation

Search the kernel source

Demonstration of kernel source and searching

Examine kernel driver source

Demonstration kernel source

Additional selected subdirectories

Challenge Linux kernel source code

Solution Linux kernel source code

Using make menuconfig

Using make xconfig

Explore kernel config files

Build and install modules and kernel

Demonstration configuing and building

Challenge Configuring and building a kernel

Solution Configuring and building a kernel

Next steps