http://wiki.barrelfish.org/
Q: Can I contribute?
-A: We'd certainly like to hear from you. Please send us mail.
+A: We'd certainly like to hear from you. Feel free to send pateches (or even
+ git merge requests) to the Barrelfish mailing list.
+ To keep track of contributions to Barrelfish, we use a sign-off procedure
+ similar to the Linux kernel:
+
+ The sign-off is a simple line at the end of the explanation for the patch,
+ which certifies that you wrote it or otherwise have the right to pass it on
+ as an open-source patch. The rules are pretty simple: if you can certify
+ the below:
+
+ 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 saying
+
+ Signed-off-by: Random J Developer <random@developer.example.org>
+
+ Note that git has support for adding such a message in the end of the commit
+ log message.