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Commit	Line	Data
	1	/*
	2	* Copyright (c) 2000, 2001, 2003, 2004, 2006, 2009, 2011, 2015, 2019 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 24, 2000 Allan Nathanson <ajn@apple.com>
	31	* - initial revision
	32	*/
	33
	34	#include "configd.h"
	35	#include "session.h"
	36
	37	__private_extern__
	38	int
	39	__SCDynamicStoreNotifyMachPort(SCDynamicStoreRef store,
	40	mach_msg_id_t identifier,
	41	mach_port_t port)
	42	{
	43	serverSessionRef mySession;
	44	SCDynamicStorePrivateRef storePrivate = (SCDynamicStorePrivateRef)store;
	45
	46	if (storePrivate->notifyStatus != NotifierNotRegistered) {
	47	/* sorry, you can only have one notification registered at once */
	48	return kSCStatusNotifierActive;
	49	}
	50
	51	if (identifier != 0) {
	52	/* sorry, the message ID (never used, no longer supported) must be zero */
	53	return kSCStatusInvalidArgument;
	54	}
	55
	56	if (port == MACH_PORT_NULL) {
	57	/* sorry, you must specify a valid mach port */
	58	return kSCStatusInvalidArgument;
	59	}
	60
	61	/* push out a notification if any changes are pending */
	62	mySession = getSession(storePrivate->server);
	63	if (mySession->changedKeys != NULL) {
	64	CFNumberRef sessionNum;
	65
	66	if (needsNotification == NULL)
	67	needsNotification = CFSetCreateMutable(NULL,
	68	0,
	69	&kCFTypeSetCallBacks);
	70
	71	sessionNum = CFNumberCreate(NULL, kCFNumberIntType, &storePrivate->server);
	72	CFSetAddValue(needsNotification, sessionNum);
	73	CFRelease(sessionNum);
	74	}
	75
	76	return kSCStatusOK;
	77	}
	78
	79
	80	__private_extern__
	81	kern_return_t
	82	_notifyviaport(mach_port_t server,
	83	mach_port_t port,
	84	mach_msg_id_t identifier,
	85	int *sc_status
	86	)
	87	{
	88	serverSessionRef mySession = getSession(server);
	89	SCDynamicStorePrivateRef storePrivate;
	90
	91	if (mySession == NULL) {
	92	/* sorry, you must have an open session to play */
	93	*sc_status = kSCStatusNoStoreSession;
	94	if (port != MACH_PORT_NULL) {
	95	(void) mach_port_deallocate(mach_task_self(), port);
	96	}
	97	return KERN_SUCCESS;
	98	}
	99	storePrivate = (SCDynamicStorePrivateRef)mySession->store;
	100
	101	*sc_status = __SCDynamicStoreNotifyMachPort(mySession->store, identifier, port);
	102	if (*sc_status != kSCStatusOK) {
	103	// if we can't enable the notification, release the provided callback port
	104	if (port != MACH_PORT_NULL) {
	105	__MACH_PORT_DEBUG(TRUE, "*** _notifyviaport __SCDynamicStoreNotifyMachPort failed: releasing port", port);
	106	(void) mach_port_deallocate(mach_task_self(), port);
	107	}
	108	return KERN_SUCCESS;
	109	}
	110
	111	/* save notification port, requested identifier, and set notifier active */
	112	__MACH_PORT_DEBUG(TRUE, "*** _notifyviaport", port);
	113	storePrivate->notifyStatus = Using_NotifierInformViaMachPort;
	114	storePrivate->notifyPort = port;
	115
	116	return KERN_SUCCESS;
	117	}