osfmk/ipc/ipc_notify.c

   1 /*
   2  * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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  23  * Please see the License for the specific language governing rights and
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  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * @OSF_COPYRIGHT@
  30  */
  31 /*
  32  * Mach Operating System
  33  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  34  * All Rights Reserved.
  35  *
  36  * Permission to use, copy, modify and distribute this software and its
  37  * documentation is hereby granted, provided that both the copyright
  38  * notice and this permission notice appear in all copies of the
  39  * software, derivative works or modified versions, and any portions
  40  * thereof, and that both notices appear in supporting documentation.
  41  *
  42  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  43  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  44  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  45  *
  46  * Carnegie Mellon requests users of this software to return to
  47  *
  48  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  49  *  School of Computer Science
  50  *  Carnegie Mellon University
  51  *  Pittsburgh PA 15213-3890
  52  *
  53  * any improvements or extensions that they make and grant Carnegie Mellon
  54  * the rights to redistribute these changes.
  55  */
  56 /*
  57  */
  58 /*
  59  *      File:   ipc/ipc_notify.c
  60  *      Author: Rich Draves
  61  *      Date:   1989
  62  *
  63  *      Notification-sending functions.
  64  */
  65
  66 #include <mach/port.h>
  67 #include <mach/message.h>
  68 #include <mach/mach_notify.h>
  69 #include <kern/misc_protos.h>
  70 #include <ipc/ipc_notify.h>
  71 #include <ipc/ipc_port.h>
  72
  73 /*
  74  *      Routine:        ipc_notify_port_deleted
  75  *      Purpose:
  76  *              Send a port-deleted notification.
  77  *      Conditions:
  78  *              Nothing locked.
  79  *              Consumes a ref/soright for port.
  80  */
  81
  82 void
  83 ipc_notify_port_deleted(
  84         ipc_port_t              port,
  85         mach_port_name_t        name)
  86 {
  87         kern_return_t kr;
  88
  89         kr = mach_notify_port_deleted(port, name);
  90         if (kr != KERN_SUCCESS) {
  91                 printf("dropped port-deleted (%p, 0x%x)\n", port, name);
  92                 ipc_port_release_sonce(port);
  93         }
  94 }
  95
  96 /*
  97  *      Routine:        ipc_notify_port_destroyed
  98  *      Purpose:
  99  *              Send a port-destroyed notification.
 100  *      Conditions:
 101  *              Nothing locked.
 102  *              Consumes a ref/soright for port.
 103  *              Consumes a ref for right, which should be a receive right
 104  *              prepped for placement into a message.  (In-transit,
 105  *              or in-limbo if a circularity was detected.)
 106  */
 107
 108 void
 109 ipc_notify_port_destroyed(
 110         ipc_port_t      port,
 111         ipc_port_t      right)
 112 {
 113         kern_return_t kr;
 114
 115         kr = mach_notify_port_destroyed(port, right);
 116         if (kr != KERN_SUCCESS) {
 117                 printf("dropped port-destroyed (%p, %p)\n",
 118                        port, right);
 119                 ipc_port_release_sonce(port);
 120                 ipc_port_release_receive(right);
 121         }
 122 }
 123
 124 /*
 125  *      Routine:        ipc_notify_no_senders
 126  *      Purpose:
 127  *              Send a no-senders notification.
 128  *      Conditions:
 129  *              Nothing locked.
 130  *              Consumes a ref/soright for port.
 131  */
 132
 133 void
 134 ipc_notify_no_senders(
 135         ipc_port_t              port,
 136         mach_port_mscount_t     mscount)
 137 {
 138         kern_return_t kr;
 139
 140         kr = mach_notify_no_senders(port, mscount);
 141         if (kr != KERN_SUCCESS) {
 142                 printf("dropped no-senders (%p, %u)\n", port, mscount);
 143                 ipc_port_release_sonce(port);
 144         }
 145 }
 146
 147 /*
 148  *      Routine:        ipc_notify_send_once
 149  *      Purpose:
 150  *              Send a send-once notification.
 151  *      Conditions:
 152  *              Nothing locked.
 153  *              Consumes a ref/soright for port.
 154  */
 155
 156 void
 157 ipc_notify_send_once(
 158         ipc_port_t      port)
 159 {
 160         kern_return_t kr;
 161
 162         kr = mach_notify_send_once(port);
 163         if (kr != KERN_SUCCESS) {
 164                 printf("dropped send-once (%p)\n", port);
 165                 ipc_port_release_sonce(port);
 166         }
 167 }
 168
 169 /*
 170  *      Routine:        ipc_notify_dead_name
 171  *      Purpose:
 172  *              Send a dead-name notification.
 173  *      Conditions:
 174  *              Nothing locked.
 175  *              Consumes a ref/soright for port.
 176  */
 177
 178 void
 179 ipc_notify_dead_name(
 180         ipc_port_t              port,
 181         mach_port_name_t        name)
 182 {
 183         kern_return_t kr;
 184
 185         kr = mach_notify_dead_name(port, name);
 186         if (kr != KERN_SUCCESS) {
 187                 printf("dropped dead-name (%p, 0x%x)\n", port, name);
 188                 ipc_port_release_sonce(port);
 189         }
 190 }