SystemConfiguration.fproj/SCDNotifierCancel.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 SCDynamicStoreNotifyCancel(SCDynamicStoreRef store)
  43 {
  44         SCDynamicStorePrivateRef        storePrivate = (SCDynamicStorePrivateRef)store;
  45         kern_return_t                   status;
  46         int                             sc_status;
  47
  48         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("SCDynamicStoreNotifyCancel:"));
  49
  50         if (!store) {
  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         switch (storePrivate->notifyStatus) {
  63                 case NotifierNotRegistered :
  64                         /* if no notifications have been registered */
  65                         return TRUE;
  66                 case Using_NotifierInformViaRunLoop :
  67                         /* once activated, a RunLoop notifier cannot be cancelled */
  68                         _SCErrorSet(kSCStatusNotifierActive);
  69                         return FALSE;
  70                 case Using_NotifierInformViaCallback :
  71                         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("  cancel callback runloop source"));
  72
  73                         /* remove the run loop source */
  74                         CFRunLoopRemoveSource(storePrivate->callbackRunLoop,
  75                                               storePrivate->callbackRunLoopSource,
  76                                               kCFRunLoopDefaultMode);
  77                         CFRelease(storePrivate->callbackRunLoopSource);
  78
  79                         /* invalidate port */
  80                         CFMachPortInvalidate(storePrivate->callbackPort);
  81                         CFRelease(storePrivate->callbackPort);
  82
  83                         storePrivate->callbackArgument          = NULL;
  84                         storePrivate->callbackFunction          = NULL;
  85                         storePrivate->callbackRunLoop           = NULL;
  86                         storePrivate->callbackRunLoopSource     = NULL;
  87                         storePrivate->callbackPort              = NULL;
  88                         break;
  89                 default :
  90                         break;
  91         }
  92
  93         status = notifycancel(storePrivate->server, (int *)&sc_status);
  94
  95         /* set notifier inactive */
  96         storePrivate->notifyStatus = NotifierNotRegistered;
  97
  98         if (status != KERN_SUCCESS) {
  99                 if (status != MACH_SEND_INVALID_DEST)
 100                         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("notifycancel(): %s"), mach_error_string(status));
 101                 (void) mach_port_destroy(mach_task_self(), storePrivate->server);
 102                 storePrivate->server = MACH_PORT_NULL;
 103                 _SCErrorSet(status);
 104                 return FALSE;
 105         }
 106
 107         if (sc_status != kSCStatusOK) {
 108                 _SCErrorSet(sc_status);
 109                 return FALSE;
 110         }
 111
 112         return TRUE;
 113 }