5.6. Building Kernel Modules

Try these first

1. 1.

   What is the purpose of the initialization function in a kernel module?

   Hint

   Think about what happens when we load a module.

2. 2.

   What is a Makefile used for in building kernel modules?

   Hint

   It tells the compiler what files to build!

3. 3.

   What command is used to compile a kernel module?

   • gcc
   • make
   • insmod

   Hint

   This command is often used in programming!

4. 4.

   True or False: The exit function of a kernel module is called when the module is loaded.

   • True
   • False

   Hint

   Think about the module's lifecycle!

5. 5.

   You have a kernel module that fails to load due to a missing dependency. Describe how you could troubleshoot this issue.

   Hint

   Think about how modules interact with one another.

6. 6.

   Write a kernel module that prints 'Hello World' on load, but also manages to handle a signal to clean up properly.

   Hint

   Look back at how we defined functions and think about signal handling.