xnu-517.tar.gz

[apple/xnu.git] / osfmk / ipc / ipc_notify.c

/*
 * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
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 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
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 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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 * Please see the License for the specific language governing rights and
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/*
 * @OSF_COPYRIGHT@
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/* 
 * Mach Operating System
 * Copyright (c) 1991,1990,1989 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:	ipc/ipc_notify.c
 *	Author:	Rich Draves
 *	Date:	1989
 *
 *	Notification-sending functions.
 */

#include <mach/port.h>
#include <mach/message.h>
#include <mach/mach_notify.h>
#include <kern/misc_protos.h>
#include <ipc/ipc_notify.h>
#include <ipc/ipc_port.h>

/*
 *	Routine:	ipc_notify_port_deleted
 *	Purpose:
 *		Send a port-deleted notification.
 *	Conditions:
 *		Nothing locked.
 *		Consumes a ref/soright for port.
 */

void
ipc_notify_port_deleted(
	ipc_port_t		port,
	mach_port_name_t	name)
{
	kern_return_t kr;

	kr = mach_notify_port_deleted(port, name);
	if (kr != KERN_SUCCESS) {
		printf("dropped port-deleted (0x%08x, 0x%x)\n", port, name);
		ipc_port_release_sonce(port);
	}
}

/*
 *	Routine:	ipc_notify_port_destroyed
 *	Purpose:
 *		Send a port-destroyed notification.
 *	Conditions:
 *		Nothing locked.
 *		Consumes a ref/soright for port.
 *		Consumes a ref for right, which should be a receive right
 *		prepped for placement into a message.  (In-transit,
 *		or in-limbo if a circularity was detected.)
 */

void
ipc_notify_port_destroyed(
	ipc_port_t	port,
	ipc_port_t	right)
{
	kern_return_t kr;

	kr = mach_notify_port_destroyed(port, right);
	if (kr != KERN_SUCCESS) {
		printf("dropped port-destroyed (0x%08x, 0x%08x)\n",
		       port, right);
		ipc_port_release_sonce(port);
		ipc_port_release_receive(right);
	}
}

/*
 *	Routine:	ipc_notify_no_senders
 *	Purpose:
 *		Send a no-senders notification.
 *	Conditions:
 *		Nothing locked.
 *		Consumes a ref/soright for port.
 */

void
ipc_notify_no_senders(
	ipc_port_t		port,
	mach_port_mscount_t	mscount)
{
	kern_return_t kr;

	kr = mach_notify_no_senders(port, mscount);
	if (kr != KERN_SUCCESS) {
		printf("dropped no-senders (0x%08x, %u)\n", port, mscount);
		ipc_port_release_sonce(port);
	}
}

/*
 *	Routine:	ipc_notify_send_once
 *	Purpose:
 *		Send a send-once notification.
 *	Conditions:
 *		Nothing locked.
 *		Consumes a ref/soright for port.
 */

void
ipc_notify_send_once(
	ipc_port_t	port)
{
	kern_return_t kr;

	kr = mach_notify_send_once(port);
	if (kr != KERN_SUCCESS) {
		printf("dropped send-once (0x%08x)\n", port);
		ipc_port_release_sonce(port);
	}
}

/*
 *	Routine:	ipc_notify_dead_name
 *	Purpose:
 *		Send a dead-name notification.
 *	Conditions:
 *		Nothing locked.
 *		Consumes a ref/soright for port.
 */

void
ipc_notify_dead_name(
	ipc_port_t		port,
	mach_port_name_t	name)
{
	kern_return_t kr;

	kr = mach_notify_dead_name(port, name);
	if (kr != KERN_SUCCESS) {
		printf("dropped dead-name (0x%08x, 0x%x)\n", port, name);
		ipc_port_release_sonce(port);
	}
}