xv6-assignments

📘 Solutions for assignments based on the xv6 operating system — part of the Operating Systems course at the Open University of Israel.

Overview

This repository contains my solutions to Maman 11 and Maman 12 — two programming assignments focusing on kernel development, system calls, process management, and container-like isolation in the xv6 educational operating system.

The assignments were completed as part of course 20502 – Operating Systems.

🔍 Topics Covered

• Adding custom system calls to xv6
• Printing process trees and process information from the kernel
• Working with PID namespaces and basic container isolation
• Modifying the xv6 kernel and user-level system interfaces
• Compilation with make and debugging with QEMU

Structure

xv6-assignments/
├── maman11/
│   ├── ps.c
│   ├── syscall.c
│   ├── sysproc.c
│   └── ...
├── maman12/
│   ├── updated-syscall-files/
│   │   ├── ...
│   └── namespace-related-code/
│       ├── ...
└── README.md

How to Build & Run

To build and run the xv6 operating system with the included modifications:

make clean
make qemu

For testing:
./runtests.exp my.log
echo $?
# Should return 0 on success

📄 Notes:

These solutions follow the guidelines and limitations defined in the course, including restrictions on modifying certain files (e.g., syscall.h), and follow conventions for system call naming and kernel structure.

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Disclaimer: This code is provided for learning purposes only. Please do not copy solutions directly — understanding and implementing the logic yourself is key to mastering systems programming.