https://github.com/SELinuxProject/selinux-notebook
This document is intended to act as a guide to help you contribute to the The SELinux Notebook. It is not perfect, and there will always be exceptions to the rules described here, but by following the instructions below you should have a much easier time getting your work merged with the upstream project.
The SELinux Notebook can be viewed in four different formats: Markdown, HTML, PDF, and EPUB. Your changes need to render correctly in all four formats. The HTML, PDF, and EPUB formatted notebooks can be created using the included Makefile and Markdown can be viewed directly via the GitHub source browser or any number of Markdown viewers.
Note that the EPUB build will optionally produce a version suitable for viewing on a Kindle that supports the "azw3" file format.
At the top of every patch you should include a description of the change you are making as well as your motivation.
The sign-off is a simple line at the end of the patch description, which certifies that you wrote it or otherwise have the right to pass it on as an open-source patch. The "Developer's Certificate of Origin" pledge is taken from the Linux Kernel and the rules are pretty simple:
Developer's Certificate of Origin 1.1
By making a contribution to this project, I certify that:
(a) The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
indicated in the file; or
(b) The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
license and I have the right under that license to submit that
work with modifications, whether created in whole or in part
by me, under the same open source license (unless I am
permitted to submit under a different license), as indicated
in the file; or
(c) The contribution was provided directly to me by some other
person who certified (a), (b) or (c) and I have not modified
it.
(d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.
... then you just add a line to the bottom of your patch description, with your real name, saying:
Signed-off-by: Random J Developer <random@developer.example.org>
You can add this to your commit description in git with git commit -s
The SELinux Notebook accepts both GitHub pull requests and patches sent via the SELinux developers mailing list. GitHub pull requests are preferred. The sections below explain how to contribute via either method. Please read each step and perform all steps that apply to your chosen contribution method.
Depending on how you decided to work with the notebook sources and what tools you are using there are different ways to generate your patch(es). However, regardless of what tools you use, you should always generate your patches using the "unified" diff/patch format and the patches should always apply to the notebook source tree using the following command from the top directory of the notebook sources:
% patch -p1 < changes.patch
If you are not using git, stacked git (stgit), or some other tool which can generate patch files for you automatically, you may find the following command helpful in generating patches, where "selinux-notebook.orig/" is the unmodified source code directory and "selinux-notebook/" is the source code directory with your changes:
% diff -purN selinux-notebook.orig/ selinux-notebook/
When in doubt please generate your patch and try applying it to an unmodified copy of the notebook sources; if it fails for you, it will fail for the rest of us.
Finally, you will need to email your patches to the mailing list so they can be reviewed and potentially merged into the main notebook repository. When sending patches to the mailing list it is important to send your email in text form, no HTML mail please, and ensure that your email client does not mangle your patches. It should be possible to save your raw email to disk and apply it directly to the notebook sources; if that fails then you likely have a problem with your email client. When in doubt try a test first by sending yourself an email with your patch and attempting to apply the emailed patch to the notebook repository; if it fails for you, it will fail for the rest of us.
See this guide if you've never done this before.