osfmk/ipc/ipc_notify.c

   1 /*
   2  * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * @OSF_COPYRIGHT@
  27  */
  28 /*
  29  * Mach Operating System
  30  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  31  * All Rights Reserved.
  32  *
  33  * Permission to use, copy, modify and distribute this software and its
  34  * documentation is hereby granted, provided that both the copyright
  35  * notice and this permission notice appear in all copies of the
  36  * software, derivative works or modified versions, and any portions
  37  * thereof, and that both notices appear in supporting documentation.
  38  *
  39  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  40  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  41  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  42  *
  43  * Carnegie Mellon requests users of this software to return to
  44  *
  45  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  46  *  School of Computer Science
  47  *  Carnegie Mellon University
  48  *  Pittsburgh PA 15213-3890
  49  *
  50  * any improvements or extensions that they make and grant Carnegie Mellon
  51  * the rights to redistribute these changes.
  52  */
  53 /*
  54  */
  55 /*
  56  *      File:   ipc/ipc_notify.c
  57  *      Author: Rich Draves
  58  *      Date:   1989
  59  *
  60  *      Notification-sending functions.
  61  */
  62
  63 #include <mach/port.h>
  64 #include <mach/message.h>
  65 #include <mach/mach_notify.h>
  66 #include <kern/misc_protos.h>
  67 #include <ipc/ipc_notify.h>
  68 #include <ipc/ipc_port.h>
  69
  70 /*
  71  *      Routine:        ipc_notify_port_deleted
  72  *      Purpose:
  73  *              Send a port-deleted notification.
  74  *      Conditions:
  75  *              Nothing locked.
  76  *              Consumes a ref/soright for port.
  77  */
  78
  79 void
  80 ipc_notify_port_deleted(
  81         ipc_port_t              port,
  82         mach_port_name_t        name)
  83 {
  84         kern_return_t kr;
  85
  86         kr = mach_notify_port_deleted(port, name);
  87         if (kr != KERN_SUCCESS) {
  88                 printf("dropped port-deleted (0x%08x, 0x%x)\n", port, name);
  89                 ipc_port_release_sonce(port);
  90         }
  91 }
  92
  93 /*
  94  *      Routine:        ipc_notify_port_destroyed
  95  *      Purpose:
  96  *              Send a port-destroyed notification.
  97  *      Conditions:
  98  *              Nothing locked.
  99  *              Consumes a ref/soright for port.
 100  *              Consumes a ref for right, which should be a receive right
 101  *              prepped for placement into a message.  (In-transit,
 102  *              or in-limbo if a circularity was detected.)
 103  */
 104
 105 void
 106 ipc_notify_port_destroyed(
 107         ipc_port_t      port,
 108         ipc_port_t      right)
 109 {
 110         kern_return_t kr;
 111
 112         kr = mach_notify_port_destroyed(port, right);
 113         if (kr != KERN_SUCCESS) {
 114                 printf("dropped port-destroyed (0x%08x, 0x%08x)\n",
 115                        port, right);
 116                 ipc_port_release_sonce(port);
 117                 ipc_port_release_receive(right);
 118         }
 119 }
 120
 121 /*
 122  *      Routine:        ipc_notify_no_senders
 123  *      Purpose:
 124  *              Send a no-senders notification.
 125  *      Conditions:
 126  *              Nothing locked.
 127  *              Consumes a ref/soright for port.
 128  */
 129
 130 void
 131 ipc_notify_no_senders(
 132         ipc_port_t              port,
 133         mach_port_mscount_t     mscount)
 134 {
 135         kern_return_t kr;
 136
 137         kr = mach_notify_no_senders(port, mscount);
 138         if (kr != KERN_SUCCESS) {
 139                 printf("dropped no-senders (0x%08x, %u)\n", port, mscount);
 140                 ipc_port_release_sonce(port);
 141         }
 142 }
 143
 144 /*
 145  *      Routine:        ipc_notify_send_once
 146  *      Purpose:
 147  *              Send a send-once notification.
 148  *      Conditions:
 149  *              Nothing locked.
 150  *              Consumes a ref/soright for port.
 151  */
 152
 153 void
 154 ipc_notify_send_once(
 155         ipc_port_t      port)
 156 {
 157         kern_return_t kr;
 158
 159         kr = mach_notify_send_once(port);
 160         if (kr != KERN_SUCCESS) {
 161                 printf("dropped send-once (0x%08x)\n", port);
 162                 ipc_port_release_sonce(port);
 163         }
 164 }
 165
 166 /*
 167  *      Routine:        ipc_notify_dead_name
 168  *      Purpose:
 169  *              Send a dead-name notification.
 170  *      Conditions:
 171  *              Nothing locked.
 172  *              Consumes a ref/soright for port.
 173  */
 174
 175 void
 176 ipc_notify_dead_name(
 177         ipc_port_t              port,
 178         mach_port_name_t        name)
 179 {
 180         kern_return_t kr;
 181
 182         kr = mach_notify_dead_name(port, name);
 183         if (kr != KERN_SUCCESS) {
 184                 printf("dropped dead-name (0x%08x, 0x%x)\n", port, name);
 185                 ipc_port_release_sonce(port);
 186         }
 187 }