CONTRIBUTING

   1 Contributing to this project
   2 ----------------------------
   3
   4 This project accepts contributions. In order to contribute, you should
   5 pay attention to a few things:
   6
   7     1 - your code must follow the coding style rules
   8     2 - the format of the submission must Github pull requests
   9     3 - your work must be signed
  10
  11
  12 Coding Style:
  13 -------------
  14
  15 The coding style follows the Linux kernel coding style.
  16
  17 The coding style is defined in the 'CodingStyle' file, available in
  18 the directory 'Documentation' of the Linux kernel source tree.
  19
  20 It can be accessed online too:
  21
  22 https://www.kernel.org/doc/html/v4.10/process/coding-style.html
  23
  24 Submitting Modifications:
  25 -------------------------
  26
  27 The contributions must be Github pull requests.
  28
  29 Licensing for new files:
  30 ------------------------
  31
  32 LXC is made of files shipped under a few different licenses.
  33
  34 Anything that ends up being part of the LXC library needs to be released
  35 under LGPLv2.1+ or a license compatible with it (though the latter will
  36 only be accepted for cases where the code originated elsewhere and was
  37 imported into LXC).
  38
  39 Language bindings for the libraries need to be released under LGPLv2.1+.
  40
  41 Anything else (non-libaries) needs to be Free Software and needs to be
  42 allowed to link with LGPLv2.1+ code (if needed). LXC upstream prefers
  43 LGPLv2.1+ or GPLv2 for those.
  44
  45 When introducing a new file into the project, please make sure it has a
  46 copyright header making clear under which license it's being released
  47 and if it doesn't match the criteria described above, please explain
  48 your decision on the lxc-devel mailing-list when submitting your patch.
  49
  50 Developer Certificate of Origin:
  51 --------------------------------
  52
  53 To improve tracking of contributions to this project we will use a
  54 process modeled on the modified DCO 1.1 and use a "sign-off" procedure.
  55
  56 The sign-off is a simple line at the end of the explanation for the
  57 patch, which certifies that you wrote it or otherwise have the right
  58 to pass it on as an open-source patch.  The rules are pretty simple:
  59 if you can certify the below:
  60
  61 By making a contribution to this project, I certify that:
  62
  63 (a) The contribution was created in whole or in part by me and I have
  64     the right to submit it under the open source license indicated in
  65     the file; or
  66
  67 (b) The contribution is based upon previous work that, to the best of
  68     my knowledge, is covered under an appropriate open source License
  69     and I have the right under that license to submit that work with
  70     modifications, whether created in whole or in part by me, under
  71     the same open source license (unless I am permitted to submit
  72     under a different license), as indicated in the file; or
  73
  74 (c) The contribution was provided directly to me by some other person
  75     who certified (a), (b) or (c) and I have not modified it.
  76
  77 (d) The contribution is made free of any other party's intellectual
  78     property claims or rights.
  79
  80 (e) I understand and agree that this project and the contribution are
  81     public and that a record of the contribution (including all
  82     personal information I submit with it, including my sign-off) is
  83     maintained indefinitely and may be redistributed consistent with
  84     this project or the open source license(s) involved.
  85
  86
  87 then you just add a line saying
  88
  89     Signed-off-by: Random J Developer <random@developer.org>
  90
  91 You can do it by using option -s or --signoff when you commit
  92
  93     git commit --signoff ...
  94
  95 using your real name (sorry, no pseudonyms or anonymous contributions.)
  96
  97 In addition we support the following DCOs which maintainers can use to indicate
  98 that a patch is acceptable:
  99
 100     Acked-by: Random J Developer <random@developer.org>
 101     Reviewed-by: Random J Developer <random@developer.org>
 102
 103 If you are contributing as a group who is implementing a feature together such
 104 that it cannot be reasonably attributed to a single developer please use:
 105
 106     Co-developed-by: Random J Developer 1 <random_1@developer.org>
 107     Co-developed-by: Random J Developer 2 <random_1@developer.org>