SCDNotifierCancel.c   [plain text]

/*
 * Copyright (c) 2000-2005, 2008-2011, 2015, 2016 Apple Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_LICENSE_HEADER_END@
 */

/*
 * Modification History
 *
 * June 1, 2001			Allan Nathanson <ajn@apple.com>
 * - public API conversion
 *
 * March 31, 2000		Allan Nathanson <ajn@apple.com>
 * - initial revision
 */

#include "SCDynamicStoreInternal.h"
#include "config.h"		/* MiG generated file */

Boolean
SCDynamicStoreNotifyCancel(SCDynamicStoreRef store)
{
	struct os_activity_scope_state_s	activity_state;
	SCDynamicStorePrivateRef		storePrivate = (SCDynamicStorePrivateRef)store;
	kern_return_t				status;
	int					sc_status;

	if (store == NULL) {
		/* sorry, you must provide a session */
		_SCErrorSet(kSCStatusNoStoreSession);
		return FALSE;
	}

	switch (storePrivate->notifyStatus) {
		case NotifierNotRegistered :
			/* if no notifications have been registered */
			return TRUE;
		case Using_NotifierInformViaRunLoop :
			if (storePrivate->rls != NULL) {
				CFRunLoopSourceRef	rls;

				rls = storePrivate->rls;
				storePrivate->rls = NULL;

				CFRunLoopSourceInvalidate(rls);
				CFRelease(rls);
			}
			return TRUE;
		case Using_NotifierInformViaDispatch :
			(void) SCDynamicStoreSetDispatchQueue(store, NULL);
			return TRUE;
		default :
			break;
	}

	if (storePrivate->server == MACH_PORT_NULL) {
		/* sorry, you must have an open session to play */
		sc_status = kSCStatusNoStoreServer;
		goto done;
	}

	os_activity_scope_enter(storePrivate->activity, &activity_state);

	status = notifycancel(storePrivate->server, (int *)&sc_status);

	if (__SCDynamicStoreCheckRetryAndHandleError(store,
						     status,
						     &sc_status,
						     "SCDynamicStoreNotifyCancel notifycancel()")) {
		sc_status = kSCStatusOK;
	}

	os_activity_scope_leave(&activity_state);

    done :

	if (sc_status != kSCStatusOK) {
		_SCErrorSet(sc_status);
		return FALSE;
	}

	return TRUE;
}