Extras: Add a checkpatch git pre-commit hook

[lttng-tools.git] / extras / checkpatch-hook

diff --git a/extras/checkpatch-hook b/extras/checkpatch-hook
new file mode 100755 (executable)
index 0000000..686815b
--- /dev/null
+++ b/extras/checkpatch-hook
@@ -0,0 +1,30 @@
+#!/bin/sh
+#
+# Copyright (C) - 2013 Christian Babeux <christian.babeux@efficios.com>
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License, version 2 only, as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc., 51
+# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+# To enable this hook, run the "install-checkpatch-hook" script.
+
+CHECKPATCH="extras/checkpatch.pl"
+
+if git rev-parse --verify HEAD >/dev/null 2>&1
+then
+       against=HEAD
+else
+       # Initial commit: diff against an empty tree object
+       against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+fi
+
+git diff --cached $against -- | $CHECKPATCH --no-signoff -