dracut-functions: try to find dracutbasedir, if not set

diff --git a/dracut-functions b/dracut-functions
index fa75642..bf2581e 100755 (executable)
--- a/dracut-functions
+++ b/dracut-functions
@@ -20,6 +20,13 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+if ! [[ $dracutbasedir ]]; then
+    dracutbasedir=${BASH_SOURCE[0]%/*}
+    [[ $dracutbasedir = "dracut-functions" ]] && dracutbasedir="."
+    [[ $dracutbasedir ]] || dracutbasedir="."
+    dracutbasedir="$(readlink -f $dracutbasedir)"
+fi
+
 if ! type dinfo >/dev/null 2>&1; then
     . "$dracutbasedir/dracut-logger"
     dlog_init