[Verse 1] Download the kernel headers, prepare your coding space Time to bridge the sacred boundary between two worlds we face Userspace runs protected, sandboxed and contained But kernel space holds power where the hardware is ordained [Chorus] Module init, module exit, that's the lifecycle you need Include linux kernel dot h, plant the fundamental seed Register your driver, claim your place inside the core Kernel space versus userspace, now you know what each is for [Verse 2] Write your init function, mark it double underscore Static int init module, this is how you open doors Print kern info messages, let the system know you're here Return zero for success, any other means you fear [Chorus] Module init, module exit, that's the lifecycle you need Include linux kernel dot h, plant the fundamental seed Register your driver, claim your place inside the core Kernel space versus userspace, now you know what each is for [Bridge] Ring zero privileges, no standard lib to call One mistake can crash it all, bring the system to a crawl GFP kernel allocations, spinlocks guard your code Module license GPL, or the kernel won't load [Verse 3] Cleanup function mandatory, free what you have claimed Double underscore exit, properly maintained Make file declarations, object files compile Insmod loads your module, lsmod shows your style [Chorus] Module init, module exit, that's the lifecycle you need Include linux kernel dot h, plant the fundamental seed Register your driver, claim your place inside the core Kernel space versus userspace, now you know what each is for [Outro] From userland to kernel land, you've crossed the sacred line Your first module running, kernel hacker by design
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