Index: su
===================================================================
--- su (nonexistent)
+++ su (revision 5)
@@ -0,0 +1,11 @@
+#%PAM-1.0
+auth sufficient pam_rootok.so
+# Uncomment the following line to implicitly trust users in the "wheel" group.
+#auth sufficient pam_wheel.so trust use_uid
+# Uncomment the following line to require a user to be in the "wheel" group.
+#auth required pam_wheel.so use_uid
+auth include system-auth
+account include system-auth
+password include system-auth
+session include system-auth
+session optional pam_xauth.so