Programming Assignment 5

Objective

Steps

1. Download this Linux VM image (xv6.ova) (1.3 GB in size) [with password: xv6] which contains the source code of Xv6 and QEMU (Quick Emulator).
2. Install VirtualBox on your laptop/desktop, and then start it.
   1. Click `File' to choose `Import Appliance' (choose the xv6.ova file downloaded)
   2. In `Appliance settings,' uncheck "USB Controller"
   3. Click Import
   Windows users: If had trouble running VirtualBox or booting up Xv6, it is likely that CPU virtualization was not enabled in the Windows' BIOS. Please review this link to enable CPU virtualization. You may also watch this video.
3. After booting up (and logging into) the Linux VM, open a terminal,

       cd xv6-public
       make clean
       make
       make qemu-nox
     

   to boot up an Xv6 VM (within QEMU). To shutdown the Xv6 VM on QEMU, type Ctrl-A and then x (or Ctrl-A, c and quit). You may log into the Linux VM with username cisc361 and password xv6.
4. Review A New System Call to Xv6 and Adding a User Program to Xv6 to complete the assignment.

Assignments

#include "types.h"
#include "stat.h"
#include "user.h"

int
main(void)
{
  printf(1, "I took CISC 361 in Spring %d\n", getyear());
  exit();
}