MOROS: Obscure Rust Operating System

MOROS is a toy operating system written in Rust for the x86 architecture.

This project started from the seventh post of the second edition of Writing an OS in Rust by Philipp Oppermann and by reading the OSDev wiki along with many open source kernels.

Features

• [x] External bootloader (using bootloader)
• [x] x86 CPU support (using x86_64)
• [x] Hardware interrupts (using pic8259_simple)
• [x] PS/2 Keyboard (using pc-keyboard)
• [x] VGA Text mode output
• [x] Serial output (using uart_16550)
• [x] Paging
• [x] Heap allocation (using linkedlistallocator)
• [x] RTC clock
• [x] PCI enumeration
• [x] ATA PIO mode
• [x] Random number generator
• [x] RTL8139 network card
• [x] DHCP/IP/TCP/UDP/DNS/HTTP protocols (using smoltcp)
• [x] Basic filesystem
• [x] Basic shell
• [x] Basic text editor
• [x] Basic file and network commands
• [x] A LOT OF SHORTCUTS TO GET EVERYTHING WORKING
• [x] HERE BE DRAGONS
• [ ] Processes
• [ ] Multitasking
• [ ] A real userspace

Setup

Install tools:

$ curl https://sh.rustup.rs -sSf | sh
$ rustup install nightly
$ rustup default nightly
$ rustup component add rust-src
$ rustup component add llvm-tools-preview
$ cargo install cargo-xbuild bootimage

Usage

Build image to disk.img:

$ make image output=vga keyboard=qwerty

Run on QEMU:

$ make qemu output=vga

Run on a native x86 computer by copying the bootloader and kernel to a hard drive or USB stick (but there is currently no USB driver so the filesystem will not be available):

$ sudo dd if=target/x86_64-moros/release/bootimage-moros.bin of=/dev/sdx && sync

In both cases, MOROS will open a console in diskless mode after boot if no filesystem is detected. The following command will setup the filesystem on the first hard drive of the first ATA bus, allowing you to exit the diskless mode and log in as a normal user:

> install

Be careful not to overwrite the hard drive of your OS when using dd inside your OS, and install or disk format inside MOROS.

LICENSE

MOROS is released under MIT.