SystemConfiguration.fproj/SCDNotifierGetChanges.c

   1 /*
   2  * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25
  26 /*
  27  * Modification History
  28  *
  29  * June 1, 2001                 Allan Nathanson <ajn@apple.com>
  30  * - public API conversion
  31  *
  32  * March 24, 2000               Allan Nathanson <ajn@apple.com>
  33  * - initial revision
  34  */
  35
  36 #include <mach/mach.h>
  37 #include <mach/mach_error.h>
  38
  39 #include <SystemConfiguration/SystemConfiguration.h>
  40 #include <SystemConfiguration/SCPrivate.h>
  41 #include "SCDynamicStoreInternal.h"
  42 #include "config.h"             /* MiG generated file */
  43
  44 CFArrayRef
  45 SCDynamicStoreCopyNotifiedKeys(SCDynamicStoreRef store)
  46 {
  47         SCDynamicStorePrivateRef        storePrivate = (SCDynamicStorePrivateRef)store;
  48         kern_return_t                   status;
  49         xmlDataOut_t                    xmlDataRef;     /* serialized data */
  50         int                             xmlDataLen;
  51         int                             sc_status;
  52         CFArrayRef                      allKeys;
  53
  54         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("SCDynamicStoreCopyNotifiedKeys:"));
  55
  56         if (!store) {
  57                 /* sorry, you must provide a session */
  58                 _SCErrorSet(kSCStatusNoStoreSession);
  59                 return NULL;
  60         }
  61
  62         if (storePrivate->server == MACH_PORT_NULL) {
  63                 _SCErrorSet(kSCStatusNoStoreServer);
  64                 return NULL;
  65         }
  66
  67         /* send the key & fetch the associated data from the server */
  68         status = notifychanges(storePrivate->server,
  69                                &xmlDataRef,
  70                                &xmlDataLen,
  71                                (int *)&sc_status);
  72
  73         if (status != KERN_SUCCESS) {
  74                 if (status != MACH_SEND_INVALID_DEST)
  75                         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("notifychanges(): %s"), mach_error_string(status));
  76                 (void) mach_port_destroy(mach_task_self(), storePrivate->server);
  77                 storePrivate->server = MACH_PORT_NULL;
  78                 _SCErrorSet(status);
  79                 return NULL;
  80         }
  81
  82         if (sc_status != kSCStatusOK) {
  83                 status = vm_deallocate(mach_task_self(), (vm_address_t)xmlDataRef, xmlDataLen);
  84                 if (status != KERN_SUCCESS) {
  85                         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("vm_deallocate(): %s"), mach_error_string(status));
  86                         /* non-fatal???, proceed */
  87                 }
  88                 _SCErrorSet(sc_status);
  89                 return NULL;
  90         }
  91
  92         /* un-serialize the list of keys which have changed */
  93         if (!_SCUnserialize((CFPropertyListRef *)&allKeys, NULL, xmlDataRef, xmlDataLen)) {
  94                 _SCErrorSet(kSCStatusFailed);
  95                 return NULL;
  96         }
  97
  98         return allKeys;
  99 }