I've been assigned a university project to create a Kernel-Level Logging Subsystem using a Reader-Writer model for Linux, but I'm feeling a bit lost. So far, I've only covered processes and threads in C, and I'm not quite sure how to start with this project. The task involves writing to a shared kernel logging buffer from multiple system modules (the writers), while system utilities like dmesg and syslog can read from it at the same time. I need to implement synchronization where multiple reads can happen simultaneously, but writes must be exclusive. I'd love to get some guidance on what steps I should be taking or any resources that could help me out!
2 Answers
Don't stress too much! Start by breaking down your project into smaller tasks. Familiarize yourself with the Linux kernel's API and look at how existing logging mechanisms work. You could also experiment by writing simple modules that implement basic read/write operations to get a feel for things. And remember, the Linux community is here to help, so consider joining forums or local meetups where you can ask for specifics.
It sounds like a challenging project, but also a great learning opportunity! First, I'd recommend diving into kernel programming documentation and exploring how Linux handles concurrent access. Look into reader-writer locks and semaphores, as those are key to managing access. It could also be helpful to read up on character device drivers since that’s where you'll implement the logging buffer. You might also want to check out example projects or GitHub repositories focusing on similar systems. Don't hesitate to reach out to your professors or classmates for specific questions as well!
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