From d3863202cba03fe564d6cc1fe3641f017392c9e7 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@redhat.com>
Date: Thu, 16 Oct 2008 11:22:29 +1030
Subject: [PATCH] xfree86: If AEI is on, disable "kbd" and "mouse" devices.

This consists of two parts:
In the implicit server layout, ignore those drivers when looking for a core
device.

And after finishing the server layout, run through the list of devices and
remove any that use mouse or kbd.

AEI is mutually exclusive with the kbd and mouse drivers, so pick either - or.
If no config file is present, force AEI on.
---
 hw/xfree86/common/xf86Config.c |   39 +++++++++++++++++++++++++++++++++++++--
 hw/xfree86/common/xf86Init.c   |    2 ++
 2 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/hw/xfree86/common/xf86Config.c b/hw/xfree86/common/xf86Config.c
index a1c2e34..ac80add 100644
--- a/hw/xfree86/common/xf86Config.c
+++ b/hw/xfree86/common/xf86Config.c
@@ -1340,7 +1340,7 @@ checkCoreInputDevices(serverLayoutPtr servlayoutp, Bool implicitLayout)
     }
 
     /* 4. First pointer with 'mouse' as the driver. */
-    if (!foundPointer && (!xf86Info.allowEmptyInput || implicitLayout)) {
+    if (!foundPointer && !xf86Info.allowEmptyInput) {
 	confInput = xf86findInput(CONF_IMPLICIT_POINTER,
 				  xf86configptr->conf_input_lst);
 	if (!confInput) {
@@ -1480,7 +1480,7 @@ checkCoreInputDevices(serverLayoutPtr servlayoutp, Bool implicitLayout)
     }
 
     /* 4. First keyboard with 'keyboard' or 'kbd' as the driver. */
-    if (!foundKeyboard && (!xf86Info.allowEmptyInput || implicitLayout)) {
+    if (!foundKeyboard && !xf86Info.allowEmptyInput) {
 	confInput = xf86findInput(CONF_IMPLICIT_KEYBOARD,
 				  xf86configptr->conf_input_lst);
 	if (!confInput) {
@@ -2481,6 +2481,41 @@ addDefaultModes(MonPtr monitorp)
 static void
 checkInput(serverLayoutPtr layout, Bool implicit_layout) {
     checkCoreInputDevices(layout, implicit_layout);
+
+    /* AllowEmptyInput and the "kbd" and "mouse" drivers are mutually
+     * exclusive. Trawl the list for mouse/kbd devices and disable them.
+     */
+    if (xf86Info.allowEmptyInput && layout->inputs)
+    {
+        IDevPtr *dev = layout->inputs;
+        BOOL warned = FALSE;
+
+        while(*dev)
+        {
+            if (strcmp((*dev)->driver, "kbd") == 0 ||
+                strcmp((*dev)->driver, "mouse") == 0)
+            {
+                IDevPtr *current;
+                if (!warned)
+                {
+                    xf86Msg(X_WARNING, "AllowEmptyInput is on, devices using "
+                            "drivers 'kbd' or 'mouse' will be disabled.\n");
+                    warned = TRUE;
+                }
+
+                xf86Msg(X_WARNING, "Disabling %s\n", (*dev)->identifier);
+
+                current = dev;
+                xfree(*dev);
+
+                do {
+                    *current = *(current + 1);
+                    current++;
+                } while(*current);
+            } else
+                dev++;
+        }
+    }
 }
 
 /*
diff --git a/hw/xfree86/common/xf86Init.c b/hw/xfree86/common/xf86Init.c
index 68dc387..eb4ebfa 100644
--- a/hw/xfree86/common/xf86Init.c
+++ b/hw/xfree86/common/xf86Init.c
@@ -508,6 +508,8 @@ InitOutput(ScreenInfo *pScreenInfo, int argc, char **argv)
 	xf86Msg(X_ERROR, "Error parsing the config file\n");
 	return;
       case CONFIG_NOFILE:
+	/* No config file? Then we want HAL to give us the devices. */
+	xf86Info.allowEmptyInput = TRUE;
 	autoconfig = TRUE;
 	break;
       }
diff --git a/hw/xfree86/doc/man/xorg.conf.man.pre b/hw/xfree86/doc/man/xorg.conf.man.pre
index 0774563..99fcdb3 100644
--- a/hw/xfree86/doc/man/xorg.conf.man.pre
+++ b/hw/xfree86/doc/man/xorg.conf.man.pre
@@ -698,6 +698,7 @@ the X server to load. Disabled by default.
 If enabled, don't add the standard keyboard and mouse drivers, if there are no
 input devices in the config file.  Enabled by default if AutoAddDevices and
 AutoEnableDevices is enabled, otherwise disabled.
+If AllowEmptyInput is on, devices using the kbd or mouse driver are ignored.
 .TP 7
 .BI "Option \*qAutoAddDevices\*q \*q" boolean \*q
 If this option is disabled, then no devices will be added from HAL events.
-- 
1.6.0.1