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How to Submit Patches to the libseccomp Project
===============================================================================
https://github.com/seccomp/libseccomp-golang
This document is intended to act as a guide to help you contribute to the
libseccomp project. 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.
* Test Your Code
There are two possible tests you can run to verify your code. The first test
is used to check the formatting and coding style of your changes, you can run
the test with the following command:
# make check-syntax
... if there are any problems with your changes a diff/patch will be shown
which indicates the problems and how to fix them.
The second possible test is used to ensure the sanity of your code changes
and to test these changes against the included tests. You can run the test
with the following command:
# make check
... if there are any faults or errors they will be displayed.
* Generate the Patch(es)
Depending on how you decided to work with the libseccomp code base 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 libseccomp source tree using the following command from the top
directory of the libseccomp 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 "libseccomp.orig/" is the unmodified
source code directory and "libseccomp/" is the source code directory with your
changes:
# diff -purN libseccomp-golang.orig/ libseccomp-golang/
When in doubt please generate your patch and try applying it to an unmodified
copy of the libseccomp sources; if it fails for you, it will fail for the rest
of us.
* Explain Your Work
At the top of every patch you should include a description of the problem you
are trying to solve, how you solved it, and why you chose the solution you
implemented. If you are submitting a bug fix, it is also incredibly helpful
if you can describe/include a reproducer for the problem in the description as
well as instructions on how to test for the bug and verify that it has been
fixed.
* Sign Your Work
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>
* Email Your Patch(es)
Finally, you will need to email your patches to the mailing list so they can
be reviewed and potentially merged into the main libseccomp-golang 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 libseccomp source code; 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 libseccomp-golang repository; if it fails for you, it will fail
for the rest of us trying to test your patch and include it in the main
libseccomp-golang repository.
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