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diff --git a/include/mach/notify.h b/include/mach/notify.h
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+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ *	File:	mach/notify.h
+ *
+ *	Kernel notification message definitions.
+ */
+
+#ifndef	_MACH_NOTIFY_H_
+#define _MACH_NOTIFY_H_
+
+#ifdef	MACH_KERNEL
+#include <mach_ipc_compat.h>
+#endif	/* MACH_KERNEL */
+
+#include <mach/port.h>
+#include <mach/message.h>
+
+/*
+ *  An alternative specification of the notification interface
+ *  may be found in mach/notify.defs.
+ */
+
+#define MACH_NOTIFY_FIRST		0100
+#define MACH_NOTIFY_PORT_DELETED	(MACH_NOTIFY_FIRST + 001 )
+			/* A send or send-once right was deleted. */
+#define MACH_NOTIFY_MSG_ACCEPTED	(MACH_NOTIFY_FIRST + 002)
+			/* A MACH_SEND_NOTIFY msg was accepted */
+#define MACH_NOTIFY_PORT_DESTROYED	(MACH_NOTIFY_FIRST + 005)
+			/* A receive right was (would have been) deallocated */
+#define MACH_NOTIFY_NO_SENDERS		(MACH_NOTIFY_FIRST + 006)
+			/* Receive right has no extant send rights */
+#define MACH_NOTIFY_SEND_ONCE		(MACH_NOTIFY_FIRST + 007)
+			/* An extant send-once right died */
+#define MACH_NOTIFY_DEAD_NAME		(MACH_NOTIFY_FIRST + 010)
+			/* Send or send-once right died, leaving a dead-name */
+#define MACH_NOTIFY_LAST		(MACH_NOTIFY_FIRST + 015)
+
+typedef struct {
+    mach_msg_header_t	not_header;
+    mach_msg_type_t	not_type;	/* MACH_MSG_TYPE_PORT_NAME */
+    mach_port_t		not_port;
+} mach_port_deleted_notification_t;
+
+typedef struct {
+    mach_msg_header_t	not_header;
+    mach_msg_type_t	not_type;	/* MACH_MSG_TYPE_PORT_NAME */
+    mach_port_t		not_port;
+} mach_msg_accepted_notification_t;
+
+typedef struct {
+    mach_msg_header_t	not_header;
+    mach_msg_type_t	not_type;	/* MACH_MSG_TYPE_PORT_RECEIVE */
+    mach_port_t		not_port;
+} mach_port_destroyed_notification_t;
+
+typedef struct {
+    mach_msg_header_t	not_header;
+    mach_msg_type_t	not_type;	/* MACH_MSG_TYPE_INTEGER_32 */
+    unsigned int	not_count;
+} mach_no_senders_notification_t;
+
+typedef struct {
+    mach_msg_header_t	not_header;
+} mach_send_once_notification_t;
+
+typedef struct {
+    mach_msg_header_t	not_header;
+    mach_msg_type_t	not_type;	/* MACH_MSG_TYPE_PORT_NAME */
+    mach_port_t		not_port;
+} mach_dead_name_notification_t;
+
+
+/* Definitions for the old IPC interface. */
+
+#if	MACH_IPC_COMPAT
+
+/*
+ *	Notifications sent upon interesting system events.
+ */
+
+#define NOTIFY_FIRST			0100
+#define NOTIFY_PORT_DELETED		( NOTIFY_FIRST + 001 )
+#define NOTIFY_MSG_ACCEPTED		( NOTIFY_FIRST + 002 )
+#define NOTIFY_OWNERSHIP_RIGHTS		( NOTIFY_FIRST + 003 )
+#define NOTIFY_RECEIVE_RIGHTS		( NOTIFY_FIRST + 004 )
+#define NOTIFY_PORT_DESTROYED		( NOTIFY_FIRST + 005 )
+#define NOTIFY_NO_MORE_SENDERS		( NOTIFY_FIRST + 006 )
+#define NOTIFY_LAST			( NOTIFY_FIRST + 015 )
+
+typedef struct {
+	msg_header_t	notify_header;
+	msg_type_t	notify_type;
+	port_t		notify_port;
+} notification_t;
+
+#endif	/* MACH_IPC_COMPAT */
+
+#endif	/* _MACH_NOTIFY_H_ */