]> git.saurik.com Git - apple/configd.git/blob - SystemConfiguration.fproj/SCDNotifierInformViaMachPort.c
configd-53.tar.gz
[apple/configd.git] / SystemConfiguration.fproj / SCDNotifierInformViaMachPort.c
1 /*
2 * Copyright (c) 2000 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 /*
24 * Modification History
25 *
26 * June 1, 2001 Allan Nathanson <ajn@apple.com>
27 * - public API conversion
28 *
29 * March 31, 2000 Allan Nathanson <ajn@apple.com>
30 * - initial revision
31 */
32
33 #include <mach/mach.h>
34 #include <mach/mach_error.h>
35
36 #include <SystemConfiguration/SystemConfiguration.h>
37 #include <SystemConfiguration/SCPrivate.h>
38 #include "SCDynamicStoreInternal.h"
39 #include "config.h" /* MiG generated file */
40
41 Boolean
42 SCDynamicStoreNotifyMachPort(SCDynamicStoreRef store, mach_msg_id_t identifier, mach_port_t *port)
43 {
44 SCDynamicStorePrivateRef storePrivate = (SCDynamicStorePrivateRef)store;
45 kern_return_t status;
46 mach_port_t oldNotify;
47 int sc_status;
48
49 SCLog(_sc_verbose, LOG_DEBUG, CFSTR("SCDynamicStoreNotifyMachPort:"));
50
51 if (!store) {
52 /* sorry, you must provide a session */
53 _SCErrorSet(kSCStatusNoStoreSession);
54 return FALSE;
55 }
56
57 if (storePrivate->server == MACH_PORT_NULL) {
58 /* sorry, you must have an open session to play */
59 _SCErrorSet(kSCStatusNoStoreServer);
60 return FALSE;
61 }
62
63 if (storePrivate->notifyStatus != NotifierNotRegistered) {
64 /* sorry, you can only have one notification registered at once */
65 _SCErrorSet(kSCStatusNotifierActive);
66 return FALSE;
67 }
68
69 /* Allocating port (for server response) */
70 status = mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, port);
71 if (status != KERN_SUCCESS) {
72 SCLog(_sc_verbose, LOG_DEBUG, CFSTR("mach_port_allocate(): %s"), mach_error_string(status));
73 _SCErrorSet(status);
74 return FALSE;
75 }
76 SCLog(_sc_verbose, LOG_DEBUG, CFSTR(" port = %d"), *port);
77
78 status = mach_port_insert_right(mach_task_self(),
79 *port,
80 *port,
81 MACH_MSG_TYPE_MAKE_SEND);
82 if (status != KERN_SUCCESS) {
83 SCLog(_sc_verbose, LOG_DEBUG, CFSTR("mach_port_insert_right(): %s"), mach_error_string(status));
84 (void) mach_port_destroy(mach_task_self(), *port);
85 *port = MACH_PORT_NULL;
86 _SCErrorSet(status);
87 return FALSE;
88 }
89
90 /* Request a notification when/if the server dies */
91 status = mach_port_request_notification(mach_task_self(),
92 *port,
93 MACH_NOTIFY_NO_SENDERS,
94 1,
95 *port,
96 MACH_MSG_TYPE_MAKE_SEND_ONCE,
97 &oldNotify);
98 if (status != KERN_SUCCESS) {
99 SCLog(_sc_verbose, LOG_DEBUG, CFSTR("mach_port_request_notification(): %s"), mach_error_string(status));
100 (void) mach_port_destroy(mach_task_self(), *port);
101 *port = MACH_PORT_NULL;
102 _SCErrorSet(status);
103 return FALSE;
104 }
105
106 if (oldNotify != MACH_PORT_NULL) {
107 SCLog(_sc_verbose, LOG_ERR, CFSTR("SCDynamicStoreNotifyMachPort(): why is oldNotify != MACH_PORT_NULL?"));
108 }
109
110 status = notifyviaport(storePrivate->server,
111 *port,
112 identifier,
113 (int *)&sc_status);
114
115 if (status != KERN_SUCCESS) {
116 if (status != MACH_SEND_INVALID_DEST)
117 SCLog(_sc_verbose, LOG_DEBUG, CFSTR("notifyviaport(): %s"), mach_error_string(status));
118 (void) mach_port_destroy(mach_task_self(), *port);
119 *port = MACH_PORT_NULL;
120 (void) mach_port_destroy(mach_task_self(), storePrivate->server);
121 storePrivate->server = MACH_PORT_NULL;
122 _SCErrorSet(status);
123 return FALSE;
124 }
125
126 /* set notifier active */
127 storePrivate->notifyStatus = Using_NotifierInformViaMachPort;
128
129 return TRUE;
130 }