1/*
2 * Copyright (c) 2000, 2001, 2004, 2005, 2009-2011 Apple Inc. All rights reserved.
3 *
4 * @APPLE_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. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23
24/*
25 * Modification History
26 *
27 * June 1, 2001			Allan Nathanson <ajn@apple.com>
28 * - public API conversion
29 *
30 * March 31, 2000		Allan Nathanson <ajn@apple.com>
31 * - initial revision
32 */
33
34#include <mach/mach.h>
35#include <mach/mach_error.h>
36
37#include <SystemConfiguration/SystemConfiguration.h>
38#include <SystemConfiguration/SCPrivate.h>
39#include "SCDynamicStoreInternal.h"
40#include "config.h"		/* MiG generated file */
41
42Boolean
43SCDynamicStoreNotifySignal(SCDynamicStoreRef store, pid_t pid, int sig)
44{
45	SCDynamicStorePrivateRef	storePrivate = (SCDynamicStorePrivateRef)store;
46	kern_return_t			status;
47	int				sc_status;
48	task_t				task;
49
50	if (store == NULL) {
51		/* sorry, you must provide a session */
52		_SCErrorSet(kSCStatusNoStoreSession);
53		return FALSE;
54	}
55
56	if (storePrivate->server == MACH_PORT_NULL) {
57		/* sorry, you must have an open session to play */
58		_SCErrorSet(kSCStatusNoStoreServer);
59		return FALSE;
60	}
61
62	if (storePrivate->notifyStatus != NotifierNotRegistered) {
63		/* sorry, you can only have one notification registered at once */
64		_SCErrorSet(kSCStatusNotifierActive);
65		return FALSE;
66	}
67
68	status = task_for_pid(mach_task_self(), pid, &task);
69	if (status != KERN_SUCCESS) {
70		SCLog(TRUE, LOG_DEBUG, CFSTR("SCDynamicStoreNotifySignal task_for_pid(): %s"), mach_error_string(status));
71		_SCErrorSet(status);
72		return FALSE;
73	}
74
75    retry :
76
77	status = notifyviasignal(storePrivate->server, task, sig, (int *)&sc_status);
78
79	if (__SCDynamicStoreCheckRetryAndHandleError(store,
80						     status,
81						     &sc_status,
82						     "SCDynamicStoreNotifySignal notifyviasignal()")) {
83		goto retry;
84	}
85
86	if (status != KERN_SUCCESS) {
87		_SCErrorSet(status);
88		return FALSE;
89	}
90
91	/* set notifier active */
92	storePrivate->notifyStatus = Using_NotifierInformViaSignal;
93
94	return TRUE;
95}
96