SystemConfiguration.fproj/SCPApply.c

   1 /*
   2  * Copyright(c) 2000 Apple Computer, 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  * November 9, 2000             Allan Nathanson <ajn@apple.com>
  31  * - initial revision
  32  */
  33
  34 #include <SystemConfiguration/SystemConfiguration.h>
  35 #include <SystemConfiguration/SCPrivate.h>
  36 #include "SCPreferencesInternal.h"
  37
  38 Boolean
  39 SCPreferencesApplyChanges(SCPreferencesRef session)
  40 {
  41         SCPreferencesPrivateRef sessionPrivate  = (SCPreferencesPrivateRef)session;
  42         Boolean                 wasLocked;
  43
  44         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("SCPreferencesApplyChanges:"));
  45
  46         /*
  47          * Determine if the we have exclusive access to the preferences
  48          * and acquire the lock if necessary.
  49          */
  50         wasLocked = sessionPrivate->locked;
  51         if (!wasLocked) {
  52                 if (!SCPreferencesLock(session, TRUE)) {
  53                         SCLog(_sc_verbose, LOG_DEBUG, CFSTR("  SCPreferencesLock() failed"));
  54                         return FALSE;
  55                 }
  56         }
  57
  58         if (!sessionPrivate->isRoot) {
  59                 /* CONFIGD REALLY NEEDS NON-ROOT WRITE ACCESS */
  60                 goto perUser;
  61         }
  62
  63         /* if necessary, create the session "apply" key */
  64         if (sessionPrivate->sessionKeyApply == NULL) {
  65                 sessionPrivate->sessionKeyApply = _SCPNotificationKey(NULL,
  66                                                                       sessionPrivate->prefsID,
  67                                                                       sessionPrivate->perUser,
  68                                                                       sessionPrivate->user,
  69                                                                       kSCPreferencesKeyApply);
  70         }
  71
  72         /* post notification */
  73         if (!SCDynamicStoreNotifyValue(sessionPrivate->session,
  74                                        sessionPrivate->sessionKeyApply)) {
  75                 SCLog(_sc_verbose, LOG_DEBUG, CFSTR("  SCDynamicStoreNotifyValue() failed"));
  76                 _SCErrorSet(kSCStatusFailed);
  77                 goto error;
  78         }
  79
  80     perUser :
  81
  82         if (!wasLocked) (void) SCPreferencesUnlock(session);
  83         return TRUE;
  84
  85     error :
  86
  87         if (!wasLocked) (void) SCPreferencesUnlock(session);
  88         return FALSE;
  89 }