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diff --git a/Source/DirectFB/lib/fusion/property.h b/Source/DirectFB/lib/fusion/property.h
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+/*
+   (c) Copyright 2001-2009  The world wide DirectFB Open Source Community (directfb.org)
+   (c) Copyright 2000-2004  Convergence (integrated media) GmbH
+
+   All rights reserved.
+
+   Written by Denis Oliver Kropp <dok@directfb.org>,
+              Andreas Hundt <andi@fischlustig.de>,
+              Sven Neumann <neo@directfb.org>,
+              Ville Syrjälä <syrjala@sci.fi> and
+              Claudio Ciccani <klan@users.sf.net>.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the
+   Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+*/
+
+#ifndef __FUSION__PROPERTY_H__
+#define __FUSION__PROPERTY_H__
+
+#include <pthread.h>
+
+#include <fusion/types.h>
+
+typedef enum {
+     FUSION_PROPERTY_AVAILABLE,
+     FUSION_PROPERTY_LEASED,
+     FUSION_PROPERTY_PURCHASED
+} FusionPropertyState;
+
+
+typedef union {
+     /* multi app */
+     struct {
+          int                      id;
+          const FusionWorldShared *shared;
+          /* builtin impl */
+          struct {
+               FusionPropertyState state;
+               pid_t               owner;
+               bool                requested;
+               bool                destroyed;
+          } builtin;
+     } multi;
+     
+     /* single app */
+     struct {
+          pthread_mutex_t          lock;
+          pthread_cond_t           cond;
+          FusionPropertyState      state;
+     } single;
+} FusionProperty;
+
+/*
+ * Initializes the property
+ */
+DirectResult fusion_property_init     (FusionProperty    *property,
+                                       const FusionWorld *world);
+
+/*
+ * Lease the property causing others to wait before leasing or purchasing.
+ *
+ * Waits as long as property is leased by another party.
+ * Returns DR_BUSY if property is/gets purchased by another party.
+ *
+ * Succeeds if property is available,
+ * puts the property into 'leased' state.
+ */
+DirectResult fusion_property_lease    (FusionProperty *property);
+
+/*
+ * Purchase the property disallowing others to lease or purchase it.
+ *
+ * Waits as long as property is leased by another party.
+ * Returns DR_BUSY if property is/gets purchased by another party.
+ *
+ * Succeeds if property is available,
+ * puts the property into 'purchased' state and wakes up any waiting party.
+ */
+DirectResult fusion_property_purchase (FusionProperty *property);
+
+/*
+ * Cede the property allowing others to lease or purchase it.
+ *
+ * Puts the property into 'available' state and wakes up one waiting party.
+ */
+DirectResult fusion_property_cede     (FusionProperty *property);
+
+/*
+ * Kills the owner of the property.
+ *
+ * Tries to make a purchased property available again by killing
+ * the process that purchased it.
+ */
+DirectResult fusion_property_holdup   (FusionProperty *property);
+
+/*
+ * Destroys the property
+ */
+DirectResult fusion_property_destroy  (FusionProperty *property);
+
+#endif
+