Operating System Project

This is the repository for SJTU CS356 Operating System Project. All the work is done in Android Emulator running on 64-bit Linux OS.

I got 100 points in this course, with bonus for presentation.

Contents

• Project 1: Android Process Tree
  • A system call that copies process tree data.
  • A program ptree that prints the process tree.
  • A simple Caesar Encryption Server.
• Project 2: Android Memory Management
  • Two system calls: one explores page table layout, the other remaps page tables to user space.
  • VATranslate: a program that translates a given virtual address of a target process to physical one.
  • vm_inspector: a program that dumps page tables of a target process.
  • Change Linux page replacement algorithm to LRU and LFU ones. (The slides of presentation are also included)