150 lines
8.0 KiB
Markdown
150 lines
8.0 KiB
Markdown
# ToAruOS (とあるOS) #
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とあるOS (ToaruOS) is a hobby Unix-like operating system. Development began in December of 2010 at the University of Illinois at Urbana-Champaign and is currently a one-man effort. For a short time, the project was the focus of the UIUC [SIGOps](http://www.acm.uiuc.edu/sigops/).
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Both the kernel and userspace are included in this repository.
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## Community
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### IRC ###
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For discussion, help with building or running the OS, and for up-to-date build verification, please join us in `#toaruos` on Freenode (`irc.freenode.net`).
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## Features ##
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The とある kernel provides a number of standard features, including:
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* Processes and threads
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* The kernel supports loading of static ELF binaries
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* Threads are scheduled by the kernel
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* Shared memory
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* Pipes and TTYs
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* Virtual file system
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* `/proc` implementation similar to Linux
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* `/dev` entries
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* EXT2 filesystem for disk access
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* Signals
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* Delivery is asynchronous from sending
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* Processed immediately during next context switch into receiving process
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The included userspace also provides:
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* A number of standard Unix utilities
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* A graphical interface
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* Composited window manager
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* Limited widget toolkit
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* Terminal emulator
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* Some xterm compatibility, support for 256 color palette, etc.
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* Anti-aliased text with FreeType
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* General support for UTF-8
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### Third-Party Software ###
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とあるOS makes use of and supplies the following third-party packages:
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* `libpng` - Used extensively by the native graphics library to provide wallpaper and icons.
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* `zlib` - Dependency of `libpng`, but also generally useful.
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* `freetype` - For rendering text using TrueType fonts.
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* `cairo` and `pixman` - For accelerated and managed graphics.
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* `ncurses` - Terminal control library, provides `terminfo`.
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* Mesa - Implementation of OpenGL (only the software rasterizer is available).
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* Vim - Popular text editor.
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Additionally, a number of third-party software packages have been ported to とあるOS, but are not yet included in this distribution:
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* Lua - Builds as-is
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* MuPDF - See [klange/toaru-pdfviewer](https://github.com/klange/toaru-pdfviewer) (library must be cross compiled)
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## Screenshots ##
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Here's what とあるOS looks like:
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(http://i.imgur.com/76EmahO.png)
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(For more screenshots, see [SCREENSHOTS.md](SCREENSHOTS.md))
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## Testing it Out ##
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From some Linux hosts (Ubuntu/Debian, Fedora), you can clone the repository and run:
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./build.sh
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This will install the required dependencies, build the userspace libraries and toolchain, build the kernel, and give you a hard disk image.
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You can then run `make run` or `make kvm` to run QEMU. An additional `make run-config` command is available that allows easy customization of the emulation environment through a config file (`.config`, see `util/config-parser` for available options).
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While we only officially support QEMU, other environments - including actual hardware - should work given the appropriate tools. If you are eager to try とあるOS from a real machine, please use GRUB 2 and ensure that you provide the correct graphics payload options. You may find a sample GRUB configuration the `image-builder` directory.
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### User Accounts ###
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The default root password is `toor`. There is also a regular user `local` with password `local`. While general system security is lacking, most system-modifying calls to the kernel require root privileges. When booting directly to a graphical terminal, the system will run in single-user mode and automatically log in as root. When running in graphical or VGA-terminal mode, a login screen is presented.
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### Cygwin ###
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With some work, とあるOS is also known to build successfully under cygwin. Instructions are forthcoming.
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### Making modifications
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If you have made modifications to the kernel or userspace, `make` will suffice to build a new image and kernel. `build.sh` should only be used once when first cloning. If you have made modifications to the system call bindings for newlib, run `rebuild-newlib.sh` from the `toolchain` directory, then rebuild userspace applications as necessray.
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### Prebuilt Images ###
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Unfortunately, we are no longer able to host prebuilt images through GitHub. We are exploring other options for distributing pre-built images and are also working to provide an ISO distribution.
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### Building an Image for VirtualBox, etc. ###
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An experimental, unsupported image building tool that will produce a "production-ready" image, including GRUB 2, is provided in the `image-builder` directory. The script, `create-image.sh`, must be run as root and will produce a 1GB raw disk image which be converted to other formats as needed.
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## Troubleshooting
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If you have any issues at all while attempting to build とあるOS, or you would like help building on an unsupported platform, please join us on IRC (`#toaruos@irc.freenode.net`). Problems encountered while using the build scripts in an unsupported environment will not be considered bugs until thoroughly examined.
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## Dependencies ##
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### Kernel ###
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To build the kernel, you will need `yasm`, `clang`, and GNU `ld` (which you undoubtedly have if you have `clang` or `gcc`).
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### Hard disks ###
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You will need `genext2fs` to generate the EXT2 images for the hard disk drive.
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### Userspace ###
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A toolchain is provided and can be built through `build.sh`; this script should be able to install its own dependencies on Ubuntu/Debian and Fedora. Other environments are not supported, but examination for the script should provide a reference point on what packages are necessary.
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## References ##
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Here are some tutorials we found useful early on:
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* [James M's kernel development tutorials](http://www.jamesmolloy.co.uk/tutorial_html/index.html)
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* [Bran's Kernel Development Tutorial](http://www.osdever.net/bkerndev/Docs/basickernel.htm)
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* [Skelix's OS tutorial](http://skelix.net/skelixos/index_en.html)
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# Licenses #
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## ToAruOS Itself ##
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This project is released under the terms of the University of Illinois / NCSA Open Source License, an OSI- and FSF-approved, GPL-compatible open source license. The NCSA License is a derivative of the MIT license and the BSD license; it is reproduced here for your convenience:
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Copyright (c) 2011-2013 Kevin Lange. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to
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deal with the Software without restriction, including without limitation the
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rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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sell copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimers.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimers in the
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documentation and/or other materials provided with the distribution.
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3. Neither the names of the ToAruOS Kernel Development Team, Kevin Lange,
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nor the names of its contributors may be used to endorse
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or promote products derived from this Software without specific prior
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written permission.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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WITH THE SOFTWARE.
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## Third-Party Packages ##
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ToAruOS contains a number of third-party packages and software. As the number of third-party packages in the OS has increased drastically, I have moved the licenses to [THIRDPARTY.md](THIRDPARTY.md).
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