SystemConfiguration.fproj/SCPApply.c

   1 /*
   2  * Copyright(c) 2000 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  * November 9, 2000             Allan Nathanson <ajn@apple.com>
  33  * - initial revision
  34  */
  35
  36 #include <SystemConfiguration/SystemConfiguration.h>
  37 #include <SystemConfiguration/SCPrivate.h>
  38 #include "SCPreferencesInternal.h"
  39
  40 Boolean
  41 SCPreferencesApplyChanges(SCPreferencesRef session)
  42 {
  43         SCPreferencesPrivateRef sessionPrivate  = (SCPreferencesPrivateRef)session;
  44         Boolean                 wasLocked;
  45
  46         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("SCPreferencesApplyChanges:"));
  47
  48         /*
  49          * Determine if the we have exclusive access to the preferences
  50          * and acquire the lock if necessary.
  51          */
  52         wasLocked = sessionPrivate->locked;
  53         if (!wasLocked) {
  54                 if (!SCPreferencesLock(session, TRUE)) {
  55                         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("  SCPreferencesLock() failed"));
  56                         return FALSE;
  57                 }
  58         }
  59
  60         if (!sessionPrivate->isRoot) {
  61                 /* CONFIGD REALLY NEEDS NON-ROOT WRITE ACCESS */
  62                 goto perUser;
  63         }
  64
  65         /* if necessary, create the session "apply" key */
  66         if (sessionPrivate->sessionKeyApply == NULL) {
  67                 sessionPrivate->sessionKeyApply = _SCPNotificationKey(NULL,
  68                                                                       sessionPrivate->prefsID,
  69                                                                       sessionPrivate->perUser,
  70                                                                       sessionPrivate->user,
  71                                                                       kSCPreferencesKeyApply);
  72         }
  73
  74         /* post notification */
  75         if (!SCDynamicStoreNotifyValue(sessionPrivate->session,
  76                                        sessionPrivate->sessionKeyApply)) {
  77                 SCLog(_sc_verbose, LOG_DEBUG, CFSTR("  SCDynamicStoreNotifyValue() failed"));
  78                 _SCErrorSet(kSCStatusFailed);
  79                 goto error;
  80         }
  81
  82     perUser :
  83
  84         if (!wasLocked) (void) SCPreferencesUnlock(session);
  85         return TRUE;
  86
  87     error :
  88
  89         if (!wasLocked) (void) SCPreferencesUnlock(session);
  90         return FALSE;
  91 }