PatchworkOS: A Modular Non-POSIX Operating System Built from Scratch with Plan9 Philosophy
By
pykello
A baker's-dozen of insight crammed into one ring.
Summary
PatchworkOS is an educational, experimental operating system project for x86_64 architecture built from scratch in C and assembly. It follows a Plan9-style 'everything is a file' philosophy and is non-POSIX compliant. The system features a from-scratch ACPI AML parser, EEVDF scheduler, and pseudo-capability namespace security model. Currently undergoing a major rewrite, the project aims to create a functional OS that runs on real hardware while maintaining modern performance expectations, though it's primarily developed for educational purposes and experimentation.
Key quotes
· 4 pulledPatchworkOS is a modular non-POSIX operating system for the x86_64 architecture that rigorously follows an 'everything is a file' philosophy.
Built from scratch in C and assembly.
While primarily a project made for fun, the goal is still to make a 'real' operating system, one that runs on real hardware and has the performance one would expect from a modern operating system.
Intended to be educational and experimental while rigorously following a Plan9-style 'everything is a file' philosophy.
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