SystemConfiguration.fproj/SCDNotifierCancel.c

   1 /*
   2  * Copyright (c) 2000-2005, 2008-2010 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
  42 Boolean
  43 SCDynamicStoreNotifyCancel(SCDynamicStoreRef store)
  44 {
  45         SCDynamicStorePrivateRef        storePrivate = (SCDynamicStorePrivateRef)store;
  46         kern_return_t                   status;
  47         int                             sc_status;
  48
  49         if (store == NULL) {
  50                 /* sorry, you must provide a session */
  51                 _SCErrorSet(kSCStatusNoStoreSession);
  52                 return FALSE;
  53         }
  54
  55         switch (storePrivate->notifyStatus) {
  56                 case NotifierNotRegistered :
  57                         /* if no notifications have been registered */
  58                         return TRUE;
  59                 case Using_NotifierInformViaCallback :
  60                         /* invalidate and release the run loop source */
  61                         if (storePrivate->callbackRLS != NULL) {
  62                                 CFRunLoopSourceInvalidate(storePrivate->callbackRLS);
  63                                 CFRelease(storePrivate->callbackRLS);
  64                                 storePrivate->callbackRLS = NULL;
  65                         }
  66
  67                         /* invalidate and release the callback mach port */
  68                         if (storePrivate->callbackPort != NULL) {
  69                                 __MACH_PORT_DEBUG(TRUE, "*** SCDynamicStoreNotifyCancel", CFMachPortGetPort(storePrivate->callbackPort));
  70                                 CFMachPortInvalidate(storePrivate->callbackPort);
  71                                 CFRelease(storePrivate->callbackPort);
  72                                 storePrivate->callbackPort = NULL;
  73                         }
  74
  75                         storePrivate->callbackArgument  = NULL;
  76                         storePrivate->callbackFunction  = NULL;
  77                         break;
  78                 case Using_NotifierInformViaRunLoop :
  79                         CFRunLoopSourceInvalidate(storePrivate->rls);
  80                         storePrivate->rls = NULL;
  81                         return TRUE;
  82                 case Using_NotifierInformViaDispatch :
  83                         (void) SCDynamicStoreSetDispatchQueue(store, NULL);
  84                         return TRUE;
  85                 default :
  86                         break;
  87         }
  88
  89         if (storePrivate->server == MACH_PORT_NULL) {
  90                 /* sorry, you must have an open session to play */
  91                 sc_status = kSCStatusNoStoreServer;
  92                 goto done;
  93         }
  94
  95         status = notifycancel(storePrivate->server, (int *)&sc_status);
  96         if (status != KERN_SUCCESS) {
  97                 if ((status == MACH_SEND_INVALID_DEST) || (status == MIG_SERVER_DIED)) {
  98                         /* the server's gone and our session port's dead, remove the dead name right */
  99                         (void) mach_port_deallocate(mach_task_self(), storePrivate->server);
 100                 } else {
 101                         /* we got an unexpected error, leave the [session] port alone */
 102                         SCLog(TRUE, LOG_ERR, CFSTR("SCDynamicStoreNotifyCancel notifycancel(): %s"), mach_error_string(status));
 103                 }
 104                 storePrivate->server = MACH_PORT_NULL;
 105                 if (((status == MACH_SEND_INVALID_DEST) || (status == MIG_SERVER_DIED))
 106                     && __SCDynamicStoreReconnect(store)) {
 107                         sc_status = kSCStatusOK;
 108                 } else {
 109                         sc_status = status;
 110                 }
 111         }
 112
 113     done :
 114
 115         /* set notifier inactive */
 116         storePrivate->notifyStatus = NotifierNotRegistered;
 117
 118         if (sc_status != kSCStatusOK) {
 119                 _SCErrorSet(sc_status);
 120                 return FALSE;
 121         }
 122
 123         return TRUE;
 124 }