osfmk/ipc/ipc_notify.c

   1 /*
   2  * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * @OSF_COPYRIGHT@
  32  */
  33 /*
  34  * Mach Operating System
  35  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  36  * All Rights Reserved.
  37  *
  38  * Permission to use, copy, modify and distribute this software and its
  39  * documentation is hereby granted, provided that both the copyright
  40  * notice and this permission notice appear in all copies of the
  41  * software, derivative works or modified versions, and any portions
  42  * thereof, and that both notices appear in supporting documentation.
  43  *
  44  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  45  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  46  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  47  *
  48  * Carnegie Mellon requests users of this software to return to
  49  *
  50  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  51  *  School of Computer Science
  52  *  Carnegie Mellon University
  53  *  Pittsburgh PA 15213-3890
  54  *
  55  * any improvements or extensions that they make and grant Carnegie Mellon
  56  * the rights to redistribute these changes.
  57  */
  58 /*
  59  */
  60 /*
  61  *      File:   ipc/ipc_notify.c
  62  *      Author: Rich Draves
  63  *      Date:   1989
  64  *
  65  *      Notification-sending functions.
  66  */
  67
  68 #include <mach/port.h>
  69 #include <mach/message.h>
  70 #include <mach/mach_notify.h>
  71 #include <kern/misc_protos.h>
  72 #include <ipc/ipc_notify.h>
  73 #include <ipc/ipc_port.h>
  74
  75 /*
  76  *      Routine:        ipc_notify_port_deleted
  77  *      Purpose:
  78  *              Send a port-deleted notification.
  79  *      Conditions:
  80  *              Nothing locked.
  81  *              Consumes a ref/soright for port.
  82  */
  83
  84 void
  85 ipc_notify_port_deleted(
  86         ipc_port_t              port,
  87         mach_port_name_t        name)
  88 {
  89         kern_return_t kr;
  90
  91         kr = mach_notify_port_deleted(port, name);
  92         if (kr != KERN_SUCCESS) {
  93                 printf("dropped port-deleted (0x%08x, 0x%x)\n", port, name);
  94                 ipc_port_release_sonce(port);
  95         }
  96 }
  97
  98 /*
  99  *      Routine:        ipc_notify_port_destroyed
 100  *      Purpose:
 101  *              Send a port-destroyed notification.
 102  *      Conditions:
 103  *              Nothing locked.
 104  *              Consumes a ref/soright for port.
 105  *              Consumes a ref for right, which should be a receive right
 106  *              prepped for placement into a message.  (In-transit,
 107  *              or in-limbo if a circularity was detected.)
 108  */
 109
 110 void
 111 ipc_notify_port_destroyed(
 112         ipc_port_t      port,
 113         ipc_port_t      right)
 114 {
 115         kern_return_t kr;
 116
 117         kr = mach_notify_port_destroyed(port, right);
 118         if (kr != KERN_SUCCESS) {
 119                 printf("dropped port-destroyed (0x%08x, 0x%08x)\n",
 120                        port, right);
 121                 ipc_port_release_sonce(port);
 122                 ipc_port_release_receive(right);
 123         }
 124 }
 125
 126 /*
 127  *      Routine:        ipc_notify_no_senders
 128  *      Purpose:
 129  *              Send a no-senders notification.
 130  *      Conditions:
 131  *              Nothing locked.
 132  *              Consumes a ref/soright for port.
 133  */
 134
 135 void
 136 ipc_notify_no_senders(
 137         ipc_port_t              port,
 138         mach_port_mscount_t     mscount)
 139 {
 140         kern_return_t kr;
 141
 142         kr = mach_notify_no_senders(port, mscount);
 143         if (kr != KERN_SUCCESS) {
 144                 printf("dropped no-senders (0x%08x, %u)\n", port, mscount);
 145                 ipc_port_release_sonce(port);
 146         }
 147 }
 148
 149 /*
 150  *      Routine:        ipc_notify_send_once
 151  *      Purpose:
 152  *              Send a send-once notification.
 153  *      Conditions:
 154  *              Nothing locked.
 155  *              Consumes a ref/soright for port.
 156  */
 157
 158 void
 159 ipc_notify_send_once(
 160         ipc_port_t      port)
 161 {
 162         kern_return_t kr;
 163
 164         kr = mach_notify_send_once(port);
 165         if (kr != KERN_SUCCESS) {
 166                 printf("dropped send-once (0x%08x)\n", port);
 167                 ipc_port_release_sonce(port);
 168         }
 169 }
 170
 171 /*
 172  *      Routine:        ipc_notify_dead_name
 173  *      Purpose:
 174  *              Send a dead-name notification.
 175  *      Conditions:
 176  *              Nothing locked.
 177  *              Consumes a ref/soright for port.
 178  */
 179
 180 void
 181 ipc_notify_dead_name(
 182         ipc_port_t              port,
 183         mach_port_name_t        name)
 184 {
 185         kern_return_t kr;
 186
 187         kr = mach_notify_dead_name(port, name);
 188         if (kr != KERN_SUCCESS) {
 189                 printf("dropped dead-name (0x%08x, 0x%x)\n", port, name);
 190                 ipc_port_release_sonce(port);
 191         }
 192 }