SystemConfiguration.fproj/SCPUnlock.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 #include <SystemConfiguration/SCP.h>
  24 #include "SCPPrivate.h"
  25
  26 #include <SystemConfiguration/SCD.h>
  27
  28 #include <fcntl.h>
  29 #include <unistd.h>
  30 #include <sys/errno.h>
  31
  32
  33 SCPStatus
  34 SCPUnlock(SCPSessionRef session)
  35 {
  36         SCPSessionPrivateRef    sessionPrivate;
  37         SCDStatus               scd_status;
  38
  39         if (session == NULL) {
  40                 return SCP_FAILED;           /* you can't do anything with a closed session */
  41         }
  42         sessionPrivate = (SCPSessionPrivateRef)session;
  43
  44         if (!sessionPrivate->locked) {
  45                 return SCP_NEEDLOCK;    /* sorry, you don't have the lock */
  46         }
  47
  48         if (!sessionPrivate->isRoot) {
  49                 /* CONFIGD REALLY NEEDS NON-ROOT WRITE ACCESS */
  50                 goto notRoot;
  51         }
  52
  53         scd_status = SCDRemove(sessionPrivate->session, sessionPrivate->sessionKeyLock);
  54         if (scd_status != SCD_OK) {
  55                 SCDLog(LOG_INFO, CFSTR("SCDRemove() failed: %s"), SCDError(scd_status));
  56                 return SCP_FAILED;
  57         }
  58
  59     notRoot:
  60
  61         sessionPrivate->locked = FALSE;
  62         return SCP_OK;
  63 }