linux_dsm_epyc7002/Documentation/maintainer/configure-git.rst
Linus Walleij 291084904e Documentation: Document how to get links with git am
This adds Kees' clever apply hook to the kernel documentation so
it can be easily references when needed.

Cc: Kees Cook <keescook@chromium.org>
Link: https://lists.linuxfoundation.org/pipermail/ksummit-discuss/2019-July/006608.html
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20191118223019.81708-1-linus.walleij@linaro.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-11-19 13:13:45 -07:00

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.. _configuregit:
Configure Git
=============
This chapter describes maintainer level git configuration.
Tagged branches used in :ref:`Documentation/maintainer/pull-requests.rst
<pullrequests>` should be signed with the developers public GPG key. Signed
tags can be created by passing the ``-u`` flag to ``git tag``. However,
since you would *usually* use the same key for the same project, you can
set it once with
::
git config user.signingkey "keyname"
Alternatively, edit your ``.git/config`` or ``~/.gitconfig`` file by hand:
::
[user]
name = Jane Developer
email = jd@domain.org
signingkey = jd@domain.org
You may need to tell ``git`` to use ``gpg2``
::
[gpg]
program = /path/to/gpg2
You may also like to tell ``gpg`` which ``tty`` to use (add to your shell rc file)
::
export GPG_TTY=$(tty)
Creating commit links to lore.kernel.org
----------------------------------------
The web site http://lore.kernel.org is meant as a grand archive of all mail
list traffic concerning or influencing the kernel development. Storing archives
of patches here is a recommended practice, and when a maintainer applies a
patch to a subsystem tree, it is a good idea to provide a Link: tag with a
reference back to the lore archive so that people that browse the commit
history can find related discussions and rationale behind a certain change.
The link tag will look like this:
Link: https://lore.kernel.org/r/<message-id>
This can be configured to happen automatically any time you issue ``git am``
by adding the following hook into your git:
.. code-block:: none
$ git config am.messageid true
$ cat >.git/hooks/applypatch-msg <<'EOF'
#!/bin/sh
. git-sh-setup
perl -pi -e 's|^Message-Id:\s*<?([^>]+)>?$|Link: https://lore.kernel.org/r/$1|g;' "$1"
test -x "$GIT_DIR/hooks/commit-msg" &&
exec "$GIT_DIR/hooks/commit-msg" ${1+"$@"}
:
EOF
$ chmod a+x .git/hooks/applypatch-msg