Files
XunilOS/README.md
T
csd4ni3l 43ec0e97df Add a proper VFS in a struct which now lives on the heap with no hacky
static lifetimes, move cursor.bmp to image assets and add wallpapers,
and a logo, add Github Action that auto-releases, add build_all script
which just builds without running
2026-05-31 23:41:02 +02:00

1.7 KiB

XunilOS

XunilOS is an OS made from scratch in Rust. The repo is based on the limine-rust-template.

It supports aarch64 inside QEMU, and x86_64 even on bare machines!

Features

Kernel

  • x86_64 IDT, GDT, interrupts, kernel heap, PS2 mouse/keyboard, paging, syscalls and usermode.
  • aarch64 kernel heap, paging, interrupts, Virtio mouse/keyboard, syscalls, usermode
  • Scheduler which does round-robin switching as well as sleeping and waking processes
  • ELF64 ET_EXEC and ET_DYN loading, verifying and running support
  • A readonly VFS which currently includes the ELF files which can be ran
  • IPC with granular permissions (read, write, manage)
  • basic (and insecure) SHM support
  • Limine bootloader
  • Framebuffer and serial support
  • Timing support based on IRQ
  • Per-process address space, kernel & user stack
  • Copy to and from userspace

Apps

  • doomgeneric: Doom ported to XunilOS. Isn't as easy, as i am using Rust and had to write my own libc stub.
  • badapple: Grayscale Bad Apple by using numbers to represent shades of gray. Pretty easy, but this is the only place where I also used Python.
  • shell: simple shell with elf running, echo and file read commands.
  • helloworld: just prints helloworld to serial

Init

  • Desktop-like experience
  • Window Management (close and minimize)
  • Start menu to open applications
  • BMP background
  • Mouse support with a BMP image
  • Dock where you can see currently open applications which can be minimized or unminimized

Libxunil (libc stub)

  • Basic functions of C (printf, strlen, etc)
  • File I\O, IPC, time
  • Input reading from Window Management
  • SHM
  • User Heap
  • Window management
  • IPC support
  • Syscalls to call back to the kernel
  • Primitives, Framebuffer and font rendering