3 # A Git hook script to prepare the commit log message. Install into
4 # lustre/.git/hooks/prepare-commit-msg to enable for Lustre commits.
6 # Called by git-commit with the name of the file that has the
7 # commit message, followed by the description of the commit
8 # message's source. The hook's purpose is to edit the commit
9 # message file. If the hook fails with a non-zero status,
10 # the commit is aborted.
12 # Commit hook to check the patch against the Lustre coding style.
13 # It adds any checkpatch warnings/errors as commit comments, which
14 # means that they can currently be ignored, but are at least visible.
16 CHECKPATCH=${CHECKPATCH:-contrib/scripts/checkpatch.pl}
17 CHECKPATCH_OPTS=${CHECKPATCH_OPTS:-"--no-signoff --no-tree"}
19 # If there are no comments in the commit, it is likely a rebase and
20 # this shouldn't be adding new comments, or they appear in the commit.
21 grep -q "^#" "$1" || exit 0
23 # Add a commented-out Signed-off-by: line. This shouldn't be added in an
24 # uncommented form, otherwise sanity checking for an emtpy commit fails.
25 # The developer should uncomment it to include it in the commit message.
26 SIGNOFF=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
27 grep -qs "^$SIGNOFF" "$1" || echo "# $SIGNOFF" >> "$1"
29 # Add the checkpatch.pl output as comments, but don't cause a commit error
30 # yet, as there may be exceptions and it is better let a person decide.
31 if [ -x "$CHECKPATCH" ]; then
34 [ -d ".git/rebase-apply" -o -d ".git/rebase-merge" ] &&
35 DIFFOPT="HEAD" || DIFFOPT="--cached"
36 git diff $DIFFOPT | $CHECKPATCH $CHECKPATCH_OPTS - |
37 sed -e 's/^/# /' >> "$1"
40 # Cause Vim to wrap text at 70 columns to match commit message style.
41 # Adding a matching emacs modeline would be good, if I knew how to do that.
42 echo "# vim:textwidth=70:" >> "$1"
44 # Add these comments at the end
45 # So that Vim does not pretend
46 # The "echo" above is actually
47 # A modeline for this file. Savvy?