This is a toy OS based on the POSIX standards. The primary goal of the project is for me to learn POSIX from the system side, understanding the design and constructon of an operating system on x86 hardware, and build a working implementation of the C standard library. Development of とあるOS is currently maintained by the UIUC [SIGOps](http://www.acm.uiuc.edu/sigops/). While the ultimate goal is a microkernel, we currently have a very monolithic kernel.
*This repository is moving to [`acm-uiuc/toaruos`](https://github.com/acm-uiuc/toaruos) in May, 2012. Please be prepared to update your pull URLs and any bookmarks you have.*
To build the kernel, you will need `yasm`, `clang` (or `gcc`, the build tools will autodetect), and GNU `ld` (which you undoubtedly have if you have `clang` or `gcc`).
To build the primary documentation, you need a complete LaTeX stack with `pdftex`, including the CJK module and Japanese fonts. To build the kernel API documentation, you will need Doxygen (eventually).
Overall, the goal of this project is to write a relatively POSIX-compatible OS from the ground up. With a focus on generic hardware functionality and universal specifications like VESA, I hope to eventually get something fairly complete in terms of what an OS should be. At some times, I may focus on an actual piece of complex hardware (I am looking to write a basic driver for Intel graphics cards based on the X driver and the Mesa components), but in general, I will stick to generic interfaces.
### Basic Goals ###
* Create a working modular monolithic kernel capable of executing arbitrary ELF binaries
* Write, from scratch, a C standard library using past experience in writing standard library functions
* Support POSIX threads
* Implement an existing file system, specifically EXT2
* Be able to manipulate VESA modes to run at an optimal resolution for graphics
* Handle basic networking on a virtual Ethernet device (DHCP, TCP, etc.)
### Loftier Goals ###
Some things are far easier said than done, but I like to say them anyway. The time span for these depends greatly on how quickly the basic goals are completed and can range anywhere from a few months to years from now.
Currently, I have a kernel capable of reading its multiboot parameters, which is terribly un-useful. The current, ordered, plan of attack is as follows:
* Finish James M's tutorial (second half), which covers:
ToAruOS is under the NCSA license, which is a derivative (and fully compatible with) the BSD license. It is also forward compatible with the GPL, so you can use ToAruOS bits and pieces in GPL. The terms of the license are listed here for your convience:
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* As of January 23, 2012, the repository also contains DejaVu fonts, which are modifications of the Bitstream Vera font set, which is released under this license:
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