5.6.3. Steps to Build the Module

Try these first

1. 1.

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

   Hint

   Think about what happens when a new module is added.

2. 2.

   Name the command used to load a kernel module.

   Hint

   This command is used for inserting modules.

3. 3.

   What command is used to compile a kernel module?

   • gcc
   • make
   • insmod

   Hint

   Think about the command that manages building processes.

4. 4.

   True or False: The exit function in a kernel module is optional.

   • True
   • False

   Hint

   Remember that it's necessary for cleanup.

5. 5.

   Imagine you wrote a kernel module, but it fails to load with an error indicating unresolved symbols. What steps would you take to troubleshoot this issue?

   Hint

   Think about what might be missing that prevents the module from loading successfully.

6. 6.

   Create a simple kernel module that counts how many times it has been loaded and prints this count to the kernel log upon every load. Describe how you would implement the code.

   Hint

   Consider how to maintain state across module loads.