xv6

How to run

Dockerfile contained in this repo should be enough to get experiment environment
make qemu-nox may compile and start the xv6 OS
make clean will delete executables and generated OS image
ctrl-A-x to exit the OS

Report

The report illustrates the motivation, design, implementation and result of this project.

Video

This video shows how to interact with updated xv6.

Declaration of revision on xv6 source code

Our changes on xv6 source code are mainly on following files:

mkfs.c: add bin directory and put all user programs into during OS initialization
exec.c: check /bin first before execution
path_util.h: path related functions, including get current working directory, and path concatenation
- For the working directory fetching, I referenced blog1 and blog2
pwd.c: get absolute current working directory, and relative path within container
sh.c: check whether path to switch is valid within container
proc.[h.c]: container and process releted initialization and status handling
- For the data structure of container and process, and initialization part(cinit(), userinit(), fork(), cfork()),we use xv6c and this project_report as a reference
cont.c: for the interface design(stages of container, style of commands) we use ctoos as a reference
For syscall-related files, we mainly reference this blog on how to add syscall to xv6
path_concatenation_test.c: a testcase file to test the functionality of path utils in path_util.h
testcases.txt: a sequence of commands and what to expect as testcases

Contribution

This project is a groupwork of Duke COMSCI510 Advanced Operating System. group member:

Junyi Xiao(netID: jx94), github account: https://github.com/yolande0917
Hao Jiang(netID: hj110), github account: https://github.com/dentiny