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c2c27bd174
The current step creates a local branch from the default origin, which is probably not my-origin in the instruction.
77 lines
5.0 KiB
Markdown
77 lines
5.0 KiB
Markdown
# How to contribute to syzkaller
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## Guidelines
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If you want to contribute to the project, feel free to send a pull request.
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Before sending a pull request you need to [sign Google CLA](https://cla.developers.google.com/) (if you don't a bot will ask you to do that)
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and add yourself to [AUTHORS](/AUTHORS)/[CONTRIBUTORS](/CONTRIBUTORS) files (in case this is your first pull request to syzkaller).
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Some guildelines to follow:
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- Commit messages should follow the following template:
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```
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dir/path: one-line description
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<empty line>
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Extended multi-line description that includes
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the problem you are solving and how it is solved.
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```
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`dir/path` is a relative path to the main dir this commit changes
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(look at examples in the [commit history](https://github.com/google/syzkaller/commits/master)). Please pay attention to punctuation. In particular:
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- `one-line description` does *not* start with a Capital letter.
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- there is *no dot* at the end of `one-line description`.
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- `Extended multi-line description` is full English sentenses with Capital letters and dots.
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Also:
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- If you commit fixes an issue, please include `Fixes #NNN` line into commit message (where `NNN` is issue number). This will auto-close the issue. If you need to mention an issue without closing it, add `Update #NNN`.
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- The pull request text is mostly irrelevant.
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- Run `make presubmit` and ensure that it passes before sending a PR. It may require some additional packages to be installed (try `sudo make install_prerequisites`).
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- Rebase your pull request onto the master branch before submitting.
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- If you're asked to add some fixes to your pull requested, please squash the new commits with the old ones.
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## What to work on
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Extending/improving [system call descriptions](syscall_descriptions.md) is always a good idea.
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Unassigned issues from the [bug tracker](https://github.com/google/syzkaller/issues) are worth doing, but some of them might be complicated.
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If you want to work on something non-trivial, please briefly describe it on the [syzkaller@googlegroups.com](https://groups.google.com/forum/#!forum/syzkaller) mailing list first,
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so that there is agreement on high level approach and no duplication of work between contributors.
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## How to create a pull request
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- First, you need an own git fork of syzkaller repository. Nagivate to [github.com/google/syzkaller](https://github.com/google/syzkaller) and press `Fork` button in the top-right corner of the page. This will create `https://github.com/YOUR_GITHUB_USERNAME/syzkaller` repository.
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- Checkout main syzkaller repository if you have not already. To work with `go` command the checkout must be under `$GOPATH`. The simplest way to do it is to run `go get github.com/google/syzkaller`, this will checkout the repository in `$GOPATH/src/github.com/google/syzkaller`.
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- Then add your repository as an additional origin:
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```shell
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cd $GOPATH/src/github.com/google/syzkaller
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git remote add my-origin https://github.com/YOUR_GITHUB_USERNAME/syzkaller.git
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git fetch my-origin
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git checkout -b my-branch my-origin/master
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```
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This adds git origin `my-origin` with your repository and checks out new branch `my-branch` based on `master` branch.
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- Change/add files as necessary.
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- Commit changes locally. For this you need to run `git add` for all changed files, e.g. `git add sys/linux/sys.txt`. You can run `git status` to see what files were changed/created. When all files are added (`git status` shows no files in `Changes not staged for commit` section and no relevant files in `Untracked files` section), run `git commit` and enter commit description in your editor.
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- Run tests locally (`make install_prerequisites` followed by `make presubmit`).
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- *Important* If you've run `go fmt` and you're seeing the presubmit fail on
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`check_diff`, then you may need to use an older version of go to format your
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code. (Version 1.11 in particular introduced a breaking change, see
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[here](https://github.com/golang/go/issues/25161) and
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[here](https://github.com/golang/go/issues/26228) for details). A
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simple way to do this is:
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```
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go get golang.org/dl/go1.10
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go1.10 download
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# Default download path is here.
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~/sdk/go1.10/bin/go fmt [target files]
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```
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- Push the commit to your fork on github with `git push my-origin my-branch`.
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- Nagivate to [github.com/google/syzkaller](https://github.com/google/syzkaller) and you should see green `Compare & pull request` button, press it. Then press `Create pull request`. Now your pull request should show up on [pull requests page](https://github.com/google/syzkaller/pulls).
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- If you don't see `Create pull request` button for any reason, you can create pull request manually. For that nagivate to [pull requests page](https://github.com/google/syzkaller/pulls), press `New pull request`, then `compare across forks` and choose `google/syzkaller`/`master` as base and `YOUR_GITHUB_USERNAME/syzkaller`/`my-branch` as compare and press `Create pull request`.
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- If you decided to rebase commits in `my-branch` (e.g. to rebase them onto updated master) after you created a pull-request, you will need to do a force push: `git push -f my-origin my-branch`.
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