diff -Naur a/kern/ipc_kobject.c b/kern/ipc_kobject.c
--- a/kern/ipc_kobject.c	2011-08-24 11:28:20.000000000 +0200
+++ b/kern/ipc_kobject.c	2011-08-24 08:47:48.000000000 +0200
@@ -46,6 +46,7 @@
 #include <ipc/ipc_port.h>
 #include <ipc/ipc_thread.h>
 #include <vm/vm_object.h>
+#include <vm/memory_object_proxy.h>
 #include <device/ds_routines.h>
 
 #if	MACH_MACHINE_ROUTINES
diff -Naur a/vm/memory_object_proxy.c b/vm/memory_object_proxy.c
--- a/vm/memory_object_proxy.c	2011-08-24 11:28:21.000000000 +0200
+++ b/vm/memory_object_proxy.c	2011-08-24 09:03:51.000000000 +0200
@@ -125,7 +125,6 @@
 			    vm_offset_t *len, natural_t len_count,
 			    ipc_port_t *port)
 {
-  kern_return_t kr;
   memory_object_proxy_t proxy;
   ipc_port_t notify;
 
diff -Naur a/vm/memory_object_proxy.h b/vm/memory_object_proxy.h
--- a/vm/memory_object_proxy.h	1970-01-01 01:00:00.000000000 +0100
+++ b/vm/memory_object_proxy.h	2011-08-24 08:48:03.000000000 +0200
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2011 Free Software Foundation, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *	Author: Fridolin Pokorny
+ */
+
+#ifndef	_MEMORY_OBJECT_PROXY_H_
+#define	_MEMORY_OBJECT_PROXT_H_
+
+#include <mach/machine/kern_return.h>
+#include <mach/vm_prot.h>
+#include <mach/boolean.h>
+#include <ipc/ipc_types.h>
+
+extern void memory_object_proxy_init(void);
+extern boolean_t memory_object_proxy_notify(mach_msg_header_t *msg);
+extern kern_return_t memory_object_create_proxy(
+				ipc_space_t space,
+				vm_prot_t max_protection,
+				ipc_port_t *object,
+				natural_t object_count,
+				vm_offset_t *offset,
+				natural_t offset_count,
+				vm_offset_t *start,
+				natural_t start_count,
+				vm_offset_t *len,
+				natural_t len_count,
+				ipc_port_t *port);
+extern kern_return_t memory_object_proxy_lookup(
+				ipc_port_t port,
+				ipc_port_t *object,
+			    vm_prot_t *max_protection);
+
+#endif	/* _MEMORY_OBJECT_PROXY_H_ */
diff -Naur a/vm/vm_init.c b/vm/vm_init.c
--- a/vm/vm_init.c	2011-08-24 11:28:21.000000000 +0200
+++ b/vm/vm_init.c	2011-08-24 08:48:14.000000000 +0200
@@ -43,6 +43,7 @@
 #include <vm/vm_page.h>
 #include <vm/vm_kern.h>
 #include <vm/memory_object.h>
+#include <vm/memory_object_proxy.h>