A toy OS

Qux is a toy operating system for x64 written in zig.

Build and run

• can only be built in Linux on x64 with grub installed.
• the kernel directory contains the kernel source code
• the boot directory contains some utility for bootstrap. steps to build:
  • run zig build under kernel to build the kernel
  • mkimg test.img make a disk image named test.img with grub installed to boot the OS with multiboot2.
  • build build everything under boot directory and copy the kernel to the disk image built above and start QEMU to run it

What's implemented

• basic memory management
• basic process management/scheduling
• basic ATA driver
• ext2 file system
• syscalls, trying to implement Linux syscalls, so that userspace programs for Linux could hopefully run on Qux
• basic ELF loader
• use dash (recompiled with musl-gcc as static executable) as the shell
• can run doom(doomgeneric), kind of :), key handling is still to be done
• network stack: TCP, UDP, ICMP(ping), a simple webserver included

TODO

• SMP support
• more syscalls
• implement dynamic loading so that linux programs can run without recompiling??
• port some usefull userspace programs