SystemConfiguration.fproj/SCDHandle.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/SCD.h>
  24 #include "SCDPrivate.h"
  25
  26
  27 SCDHandleRef
  28 SCDHandleInit()
  29 {
  30         SCDHandlePrivateRef privateHandle = CFAllocatorAllocate(NULL, sizeof(SCDHandlePrivate), 0);
  31
  32         /* set data */
  33         privateHandle->data = NULL;
  34
  35         /* set instance */
  36         privateHandle->instance = 0;
  37
  38         return (SCDHandleRef)privateHandle;
  39 }
  40
  41
  42 void
  43 SCDHandleRelease(SCDHandleRef handle)
  44 {
  45         SCDHandlePrivateRef privateHandle = (SCDHandlePrivateRef)handle;
  46
  47         if (privateHandle->data)
  48                 CFRelease(privateHandle->data);
  49
  50         CFAllocatorDeallocate(NULL, privateHandle);
  51         return;
  52 }
  53
  54
  55 int
  56 SCDHandleGetInstance(SCDHandleRef handle)
  57 {
  58         SCDHandlePrivateRef privateHandle = (SCDHandlePrivateRef)handle;
  59
  60         return privateHandle->instance;
  61 }
  62
  63
  64 void
  65 _SCDHandleSetInstance(SCDHandleRef handle, int instance)
  66 {
  67         SCDHandlePrivateRef privateHandle = (SCDHandlePrivateRef)handle;
  68
  69         privateHandle->instance = instance;
  70         return;
  71 }
  72
  73
  74 CFPropertyListRef
  75 SCDHandleGetData(SCDHandleRef handle)
  76 {
  77         SCDHandlePrivateRef privateHandle = (SCDHandlePrivateRef)handle;
  78
  79         if (privateHandle->data == NULL) {
  80                 return CFSTR("SCDHandleRef not initialized.");
  81         }
  82
  83         return privateHandle->data;
  84 }
  85
  86
  87 void
  88 SCDHandleSetData(SCDHandleRef handle, CFPropertyListRef data)
  89 {
  90         SCDHandlePrivateRef privateHandle = (SCDHandlePrivateRef)handle;
  91
  92         /* remove reference to data previously associated with handle */
  93         if (privateHandle->data)
  94                 CFRelease(privateHandle->data);
  95
  96         /* associate new data with handle, keep a reference as needed */
  97         privateHandle->data = data;
  98         if (privateHandle->data)
  99                 CFRetain(privateHandle->data);
 100
 101         return;
 102 }