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BeeOS

README

A simple and minimal "Unix-like" kernel trying to be POSIX compliant. (at least with respect to the implemented services).

The kernel is NOT STABLE for production and is a discontinuous work mainly used as a didactical tool for operating systems and low level programming.

Because of it's simplicity it can be used as a trampoline to start digging with common operating system problems.

Once you've mastered the BeeOS sources it will be a lot easier to start hacking with more complex OS projects.

Prerequisites

  • gcc
  • binutils
  • make
  • qemu (qemu-system)

Quickstart

  1. make all

    This command will build the kernel, standard library (libc), user utility library (libu) and user applications.

  2. (cd misc && sudo ./mkfs.sh)

    Creates the root filesystem ramdisk with the user applications.

  3. (cd misc && ./qemu.sh)

    Starts qemu and BeeOS.

Implemented Milestones

Supported Architectures

  • x86

Core

  • Multitasking
  • Syscalls
  • Virtual Memory
  • Virtual File System: ext2, devfs
  • SLAB allocator
  • Buddy allocator
  • Timer queues

IPC

  • Signals
  • Pipes

Synchronization

  • Spinlocks
  • Wait queues

Drivers

  • TTY
  • Screen
  • Ramdisk
  • Keyboard
  • PRNG

Other

  • Multi TTY console

CONTRIBUTIONS

All contributions to the project will be listed in the AUTHORS file.

LICENSING

BeeOS is free software. See the file COPYING for licensing conditions.

CONTENTS

ChangeLog
  Version history

COPYING
  Copying, distribution and modification conditions and terms.

kernel/
  BeeOS kernel sources.

libc/
  BeeOS standard C library.

libu/
  Common user functions.

user/
  Various user applications and test programs.

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A simple "Unix-like" kernel trying to be POSIX compliant

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