--- wpa_supplicant-0.5.7/wpa_supplicant.c.sigusr1	2007-08-24 11:24:51.000000000 -0400
+++ wpa_supplicant-0.5.7/wpa_supplicant.c	2007-08-24 11:43:08.000000000 -0400
@@ -930,6 +930,22 @@ static void wpa_supplicant_reconfig(int 
 	}
 }
 
+static void wpa_supplicant_handle_sigusr1(int sig, void *eloop_ctx,
+				     void *signal_ctx)
+{
+	/* Increase verbosity (by decreasing the debug level) and wrap back
+	 * to MSG_INFO when needed.
+	 */
+	if (wpa_debug_level)
+		wpa_debug_level--;
+	else
+		wpa_debug_level = MSG_INFO;
+	
+	wpa_printf(MSG_INFO, "Signal %d received - changing debug level to %s", sig,
+	           (wpa_debug_level == MSG_INFO) ? "INFO" :
+	               ((wpa_debug_level == MSG_DEBUG) ? "DEBUG" :
+	                   ((wpa_debug_level == MSG_MSGDUMP) ? "MSGDUMP" : "UNKNOWN")));
+}
 
 static void wpa_supplicant_gen_assoc_event(struct wpa_supplicant *wpa_s)
 {
@@ -2561,6 +2577,8 @@ int wpa_supplicant_run(struct wpa_global
 	eloop_register_signal_terminate(wpa_supplicant_terminate, NULL);
 	eloop_register_signal_reconfig(wpa_supplicant_reconfig, NULL);
 
+	eloop_register_signal(SIGUSR1, wpa_supplicant_handle_sigusr1, NULL);
+
 	eloop_run();
 
 	return 0;