CSCI [4|6]730 Operating Systems

P1: Loading Linux Kernel Modules and Kernel Data Structures.

Assignment Day	January 17, 2018
Due Date	January 30 You will need to demo this in class.

This project is described with less detail in the text book - as programming project on page 96 - 101 (see piazza for a descriptive pdf). In this project you will a) add a basic kernel module to the Linux Kernel, and b) create a traversible kernel data structure, a list structure.

General Steps (how to install Virtual Box is described in 2, at book resource site.).

1. (4-5 minutes) Install VirtualBox on your laptop 4-5 minutes
2. (1 hr) Download the Virtual Machine from the book website ( site ).
3. Update the Linux kernel:
   
   sudo apt-get update
sudo apt-get dist-upgrade
sudo apt-get install linux-headers-$(uname -r)
   
   optional full linux source tree: sudo apt-get install linux-source
   
   
4. Write a simple linux kernel module that prints out informational messages.
5. Write a linux kernel module that manipulates/traverses a kernel list structure.
   

 

Hints:

• set -o vi
• include files needed in data structure program (in addition to the ones in simple.c):
  
#include <linux/list.h>
#include <linux/types.h>
#include <linux/slab.h> /* for kmalloc to work */
  
  
• struct birthday
{
int day;
int year;
struct list_head list;
};
  
  Is missing the last ';' after the curly brace in the book.
  
• osc - password for the virtual machine
  

Useful commands:

• lsmod
• sudo insmod simple.ko # installs module
• sudo rmmod simple # removes module
• sudo dmesg

• sudo dmesg -c # clears buffer
• from virtual box machine, log into your host machine via the default gateway at
  10.0.2.2
  Example (in a terminal of the Debian Linux guest OS in your virtual box).
  ssh ingrid@10.0.0.2 # secure remote login
sftp ingrid@10.0.0.2 #transfer files

Submission:

please submit all c-code, Makefile and screenshot (demostrating that your programs work appropriately on nike in a directory prefaced with the string: P2