Btrfs: Add version strings on module load
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/version.sh b/fs/btrfs/version.sh
new file mode 100644
index 0000000..fd9b53d
--- /dev/null
+++ b/fs/btrfs/version.sh
@@ -0,0 +1,43 @@
+#!/bin/bash
+#
+# determine-version -- report a useful version for releases
+#
+# Copyright 2008, Aron Griffis <agriffis@n01se.net>
+# Copyright 2008, Oracle
+# Released under the GNU GPLv2
+
+v="Btrfs v0.15"
+
+which hg > /dev/null
+if [ $? == 0 ]; then
+ last=$(hg tags | grep -m1 -o '^v[0-9.]\+')
+
+ # now check if the repo has commits since then...
+ if [[ $(hg id -t) == $last || \
+ $(hg di -r "$last:." | awk '/^diff/{print $NF}' | sort -u) == .hgtags ]]
+ then
+ # check if it's dirty
+ if [[ $(hg id | cut -d' ' -f1) == *+ ]]; then
+ v=$last+
+ else
+ v=$last
+ fi
+ else
+ # includes dirty flag
+ v=$last+$(hg id -i)
+ fi
+fi
+
+echo "#ifndef __BUILD_VERSION" > .build-version.h
+echo "#define __BUILD_VERSION" >> .build-version.h
+echo "#define BTRFS_BUILD_VERSION \"Btrfs $v\"" >> .build-version.h
+echo "#endif" >> .build-version.h
+
+diff -q version.h .build-version.h >& /dev/null
+
+if [ $? == 0 ]; then
+ rm .build-version.h
+ exit 0
+fi
+
+mv .build-version.h version.h