diff -pur xdm-1.1.11.orig/include/dm.h xdm-1.1.11/include/dm.h
--- xdm-1.1.11.orig/include/dm.h	2011-09-25 01:35:47.000000000 -0600
+++ xdm-1.1.11/include/dm.h	2013-03-02 03:15:10.000000000 -0700
@@ -222,6 +222,7 @@ struct display {
 	char		*systemShell;	/* interpreter for startup/reset */
 	char		*failsafeClient;/* a client to start when the session fails */
 	char		*chooser;	/* chooser program */
+	char		*greeter;	/* greeter program */
 
 	/* authorization resources */
 	int		authorize;	/* enable authorization */
diff -pur xdm-1.1.11.orig/man/xdm.man xdm-1.1.11/man/xdm.man
--- xdm-1.1.11.orig/man/xdm.man	2011-09-25 01:35:47.000000000 -0600
+++ xdm-1.1.11/man/xdm.man	2013-03-02 03:22:51.000000000 -0700
@@ -415,6 +415,10 @@ Specifies the program run to offer a hos
 redirected to the special host name CHOOSER.
 \fI CHOOSERPATH \fP is the default.
 See the sections \fBXDMCP Access Control\fP and \fBChooser\fP.
+.IP "\fBDisplayManager.\fP\fIDISPLAY\fP\fB.greeter\fP"
+Specifies the program run to offer a graphical login prompt.  When
+this resource is specified, the value of \fBDisplayManager.greeterLib\fP
+is ignored for the specified \fIDISPLAY\fP.
 .IP "\fBDisplayManager.\fP\fIDISPLAY\fP\fB.xrdb\fP"
 Specifies the program used to load the resources.  By default,
 .I xdm
Only in xdm-1.1.11: wdm.patch
diff -pur xdm-1.1.11.orig/xdm/dpylist.c xdm-1.1.11/xdm/dpylist.c
--- xdm-1.1.11.orig/xdm/dpylist.c	2011-09-25 01:35:47.000000000 -0600
+++ xdm-1.1.11/xdm/dpylist.c	2013-03-02 03:15:58.000000000 -0700
@@ -148,6 +148,7 @@ RemoveDisplay (struct display *old)
 	    free (d->systemShell);
 	    free (d->failsafeClient);
 	    free (d->chooser);
+	    free (d->greeter);
 	    if (d->authorizations)
 	    {
 		for (i = 0; i < d->authNum; i++)
@@ -224,6 +225,7 @@ NewDisplay (char *name, char *class)
     d->systemShell = NULL;
     d->failsafeClient = NULL;
     d->chooser = NULL;
+    d->greeter = NULL;
     d->authorize = FALSE;
     d->authorizations = NULL;
     d->authNum = 0;
diff -pur xdm-1.1.11.orig/xdm/resource.c xdm-1.1.11/xdm/resource.c
--- xdm-1.1.11.orig/xdm/resource.c	2011-09-25 01:35:47.000000000 -0600
+++ xdm-1.1.11/xdm/resource.c	2013-03-02 03:15:42.000000000 -0700
@@ -106,6 +106,9 @@ int	choiceTimeout;	/* chooser choice tim
 #ifndef DEF_CHOOSER
 # define DEF_CHOOSER "/usr/lib/X11/xdm/chooser"
 #endif
+#ifndef DEF_GREETER
+# define DEF_GREETER ""
+#endif
 #ifndef DEF_AUTH_NAME
 # ifdef HASXDMAUTH
 #  define DEF_AUTH_NAME	"XDM-AUTHORIZATION-1 MIT-MAGIC-COOKIE-1"
@@ -280,6 +283,8 @@ struct displayResource sessionResources[
 				DEF_USER_AUTH_DIR },
 { "chooser",	"Chooser",	DM_STRING,	boffset(chooser),
 				DEF_CHOOSER },
+{ "greeter",	"Greeter",	DM_STRING,	boffset(greeter),
+				DEF_GREETER },
 };
 
 #define NUM_SESSION_RESOURCES	(sizeof sessionResources/\
diff -pur xdm-1.1.11.orig/xdm/session.c xdm-1.1.11/xdm/session.c
--- xdm-1.1.11.orig/xdm/session.c	2011-09-25 01:35:47.000000000 -0600
+++ xdm-1.1.11/xdm/session.c	2013-03-02 03:16:29.000000000 -0700
@@ -340,6 +340,22 @@ ManageSession (struct display *d)
      */
     LoadXloginResources (d);
 
+    if (d->greeter && d->greeter[0] != 0) {
+	char	**args;
+	char	**env;
+
+	args = parseArgs ((char **) 0, d->greeter);
+	env = systemEnv (d, (char *) 0, (char *) 0);
+#ifdef USE_SYSTEMD_DAEMON
+	sd_notify(1, "READY=1");
+#endif
+	Debug ("ManageSession: running %s\n", args[0]);
+	execute (args, env);
+	Debug ("ManageSession: couldn't run %s\n", args[0]);
+	LogError ("Cannot execute %s\n", args[0]);
+	exit (UNMANAGE_DISPLAY);
+    }
+
     Debug ("ManageSession: loading greeter library %s\n", greeterLib);
     greet_lib_handle = dlopen(greeterLib, RTLD_NOW);
     if (greet_lib_handle != NULL)