40 lines
1.5 KiB
Markdown
40 lines
1.5 KiB
Markdown
## License ##
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Jehanne inherits a lot of code from [Plan9][Plan9] through its [UC Berkeley release][brho],
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[Plan9-9k][plan9-9k], [9front][9front] and [Harvey][harvey].
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The initial [Plan 9][brho] code has been received, modified and
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is redistributed according to the GNU General Public License, Version 2
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as explained in /doc/licence/LICENSE.Plan9.txt.
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The kernel is a direct fork of Charles Forsyth's [Plan9-9k][plan9-9k],
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according to /doc/license/NOTICE.Plan9-9k.txt. Original kernel code is
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released as GNU General Public License, Version 2.
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New tools and improvements ported from 9front are subject to the MIT
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license as explained in /doc/licence/9front-mit.txt.
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New libraries and programs that use Plan9 libraries as system libraries
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can be subject to different licenses, as documented in the respective
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sources.
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## New System Libraries ##
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Some new libraries designed for use within Jehanne are released under
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GNU Affero General Public License, Version 3.
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They can be linked as "System Libraries" for use within Jehanne.
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## Additional Licenses ##
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Jehanne contains a number of third-party packages under various licenses.
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They are retrieved from their respective sources - licenses
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for these packages are not included here, but should be available
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from the respective directories in /sys/src, /pkgs or /hacking.
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[Plan9]: https://9p.io/plan9/index.html
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[brho]: https://github.com/brho/plan9
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[harvey]: http://harvey-os.org "Harvey OS"
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[9front]: http://9front.org/ "THE PLAN FELL OFF"
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[plan9-9k]: https://bitbucket.org/forsyth/plan9-9k "Experimental 64-bit Plan 9 kernel"
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