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  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  */
  25 /*
  26  * Mach Operating System
  27  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  28  * All Rights Reserved.
  29  *
  30  * Permission to use, copy, modify and distribute this software and its
  31  * documentation is hereby granted, provided that both the copyright
  32  * notice and this permission notice appear in all copies of the
  33  * software, derivative works or modified versions, and any portions
  34  * thereof, and that both notices appear in supporting documentation.
  35  *
  36  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  37  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  38  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  39  *
  40  * Carnegie Mellon requests users of this software to return to
  41  *
  42  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  43  *  School of Computer Science
  44  *  Carnegie Mellon University
  45  *  Pittsburgh PA 15213-3890
  46  *
  47  * any improvements or extensions that they make and grant Carnegie Mellon
  48  * the rights to redistribute these changes.
  49  */
  50 /*
  51  */
  52 /*
  53  *      File:   ipc/ipc_notify.c
  54  *      Author: Rich Draves
  55  *      Date:   1989
  56  *
  57  *      Notification-sending functions.
  58  */
  59
  60 #include <mach/port.h>
  61 #include <mach/message.h>
  62 #include <mach/mach_notify.h>
  63 #include <kern/misc_protos.h>
  64 #include <ipc/ipc_notify.h>
  65 #include <ipc/ipc_port.h>
  66
  67 /*
  68  *      Routine:        ipc_notify_port_deleted
  69  *      Purpose:
  70  *              Send a port-deleted notification.
  71  *      Conditions:
  72  *              Nothing locked.
  73  *              Consumes a ref/soright for port.
  74  */
  75
  76 void
  77 ipc_notify_port_deleted(
  78         ipc_port_t              port,
  79         mach_port_name_t        name)
  80 {
  81         kern_return_t kr;
  82
  83         kr = mach_notify_port_deleted(port, name);
  84         if (kr != KERN_SUCCESS) {
  85                 printf("dropped port-deleted (0x%08x, 0x%x)\n", port, name);
  86                 ipc_port_release_sonce(port);
  87         }
  88 }
  89
  90 /*
  91  *      Routine:        ipc_notify_port_destroyed
  92  *      Purpose:
  93  *              Send a port-destroyed notification.
  94  *      Conditions:
  95  *              Nothing locked.
  96  *              Consumes a ref/soright for port.
  97  *              Consumes a ref for right, which should be a receive right
  98  *              prepped for placement into a message.  (In-transit,
  99  *              or in-limbo if a circularity was detected.)
 100  */
 101
 102 void
 103 ipc_notify_port_destroyed(
 104         ipc_port_t      port,
 105         ipc_port_t      right)
 106 {
 107         kern_return_t kr;
 108
 109         kr = mach_notify_port_destroyed(port, right);
 110         if (kr != KERN_SUCCESS) {
 111                 printf("dropped port-destroyed (0x%08x, 0x%08x)\n",
 112                        port, right);
 113                 ipc_port_release_sonce(port);
 114                 ipc_port_release_receive(right);
 115         }
 116 }
 117
 118 /*
 119  *      Routine:        ipc_notify_no_senders
 120  *      Purpose:
 121  *              Send a no-senders notification.
 122  *      Conditions:
 123  *              Nothing locked.
 124  *              Consumes a ref/soright for port.
 125  */
 126
 127 void
 128 ipc_notify_no_senders(
 129         ipc_port_t              port,
 130         mach_port_mscount_t     mscount)
 131 {
 132         kern_return_t kr;
 133
 134         kr = mach_notify_no_senders(port, mscount);
 135         if (kr != KERN_SUCCESS) {
 136                 printf("dropped no-senders (0x%08x, %u)\n", port, mscount);
 137                 ipc_port_release_sonce(port);
 138         }
 139 }
 140
 141 /*
 142  *      Routine:        ipc_notify_send_once
 143  *      Purpose:
 144  *              Send a send-once notification.
 145  *      Conditions:
 146  *              Nothing locked.
 147  *              Consumes a ref/soright for port.
 148  */
 149
 150 void
 151 ipc_notify_send_once(
 152         ipc_port_t      port)
 153 {
 154         kern_return_t kr;
 155
 156         kr = mach_notify_send_once(port);
 157         if (kr != KERN_SUCCESS) {
 158                 printf("dropped send-once (0x%08x)\n", port);
 159                 ipc_port_release_sonce(port);
 160         }
 161 }
 162
 163 /*
 164  *      Routine:        ipc_notify_dead_name
 165  *      Purpose:
 166  *              Send a dead-name notification.
 167  *      Conditions:
 168  *              Nothing locked.
 169  *              Consumes a ref/soright for port.
 170  */
 171
 172 void
 173 ipc_notify_dead_name(
 174         ipc_port_t              port,
 175         mach_port_name_t        name)
 176 {
 177         kern_return_t kr;
 178
 179         kr = mach_notify_dead_name(port, name);
 180         if (kr != KERN_SUCCESS) {
 181                 printf("dropped dead-name (0x%08x, 0x%x)\n", port, name);
 182                 ipc_port_release_sonce(port);
 183         }
 184 }