xrs-os/kernel

(🚧WIP) A POSIX-subset operating system kernel written in Rust. `async` inside.

XRS-OS (🚧WIP)

Xrs is a POSIX-subset operating system kernel written in Rust.

Current project team members

• 0x5459 core developer (he/him)
• 0x5457 core developer (he/him)

Build

Environment

• Rust toolchain
• QEMU >= 6.1.0
• Python 3

How to run

git clone https://github.com/xrs-os/kernel.git
cd kernel
python3 bootstrap.py qemu

Inspired by

• rCore Rust version of THU uCore OS, teaching operating system. Linux compatible.

• Writing an OS in Rust An os blog. This blog series creates a small operating system in the Rust programming language.

• Redox Redox is an operating system written in Rust, a language with focus on safety and high performance. Redox, following the microkernel design, aims to be secure, usable, and free.

• xv6-riscv xv6 is a teaching operating system developed for MIT's operating systems course. It is a re-implementation of Dennis Ritchie's and Ken Thompson's Unix Version 6 (v6). xv6 loosely follows the structure and style of v6, but is implemented for a modern RISC-V multiprocessor using ANSI C.

• Linux The linux kernel.

TODO list

• Architecture

  • RISC-V
  • x86/64
  • aarch64

• Memory management

  • Kernel heap allocator
    • Linkedlist
    • Slab
  • Virtual address mapping
  • Frame allocator
    • Bump
    • Buddy
  • Virtual memory for copy-on-write

• Task management

  • Executor
    • FIFO
    • HRRN
  • Async Task

• Filesystem

  • VFS
  • NaiveFS (Like ext2, but simpler)
  • Fat
  • Ext2/3/4
  • MountFS (Mountable FS wrapper)
  • CacheFS (LRU Cacheable FS wrapper)

• Driver

  • Async virtio driver (based on rcore/virtio-drivers)