SystemConfiguration.fproj/dy_framework.c

   1 /*
   2  * Copyright (c) 2002 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 /*
  24  * Modification History
  25  *
  26  * October 31, 2000             Allan Nathanson <ajn@apple.com>
  27  * - initial revision
  28  */
  29
  30
  31 #include <sys/types.h>
  32 #include <sys/param.h>
  33 #include <sys/stat.h>
  34 #include <mach-o/dyld.h>
  35 #include <CoreFoundation/CoreFoundation.h>
  36
  37 #include "dy_framework.h"
  38
  39
  40 static void *
  41 __loadIOKit(void) {
  42         static const void *image = NULL;
  43         if (NULL == image) {
  44                 const char      *framework              = "/System/Library/Frameworks/IOKit.framework/IOKit";
  45                 struct stat     statbuf;
  46                 const char      *suffix                 = getenv("DYLD_IMAGE_SUFFIX");
  47                 char            path[MAXPATHLEN];
  48
  49                 strcpy(path, framework);
  50                 if (suffix) strcat(path, suffix);
  51                 if (0 <= stat(path, &statbuf)) {
  52                         image = NSAddImage(path, NSADDIMAGE_OPTION_NONE);
  53                 } else {
  54                         image = NSAddImage(framework, NSADDIMAGE_OPTION_NONE);
  55                 }
  56         }
  57         return (void *)image;
  58 }
  59
  60
  61 __private_extern__ CFMutableDictionaryRef
  62 _IOBSDNameMatching(mach_port_t masterPort, unsigned int options, const char *bsdName)
  63 {
  64         static CFMutableDictionaryRef (*dyfunc)(mach_port_t, unsigned int, const char *) = NULL;
  65         if (!dyfunc) {
  66                 void *image = __loadIOKit();
  67                 if (image) dyfunc = NSAddressOfSymbol(NSLookupSymbolInImage(image, "_IOBSDNameMatching", NSLOOKUPSYMBOLINIMAGE_OPTION_BIND));
  68         }
  69         return dyfunc ? dyfunc(masterPort, options, bsdName) : NULL;
  70 }
  71
  72
  73 __private_extern__ io_object_t
  74 _IOIteratorNext(io_iterator_t iterator)
  75 {
  76         static io_object_t (*dyfunc)(io_iterator_t) = NULL;
  77         if (!dyfunc) {
  78                 void *image = __loadIOKit();
  79                 if (image) dyfunc = NSAddressOfSymbol(NSLookupSymbolInImage(image, "_IOIteratorNext", NSLOOKUPSYMBOLINIMAGE_OPTION_BIND));
  80         }
  81         return dyfunc ? dyfunc(iterator) : 0;
  82 }
  83
  84
  85 __private_extern__ kern_return_t
  86 _IOMasterPort(mach_port_t bootstrapPort, mach_port_t *masterPort)
  87 {
  88         static kern_return_t (*dyfunc)(mach_port_t, mach_port_t *) = NULL;
  89         if (!dyfunc) {
  90                 void *image = __loadIOKit();
  91                 if (image) dyfunc = NSAddressOfSymbol(NSLookupSymbolInImage(image, "_IOMasterPort", NSLOOKUPSYMBOLINIMAGE_OPTION_BIND));
  92         }
  93         return dyfunc ? dyfunc(bootstrapPort, masterPort) : KERN_FAILURE;
  94 }
  95
  96
  97 __private_extern__ kern_return_t
  98 _IOObjectRelease(io_object_t object)
  99 {
 100         static kern_return_t (*dyfunc)(io_object_t) = NULL;
 101         if (!dyfunc) {
 102                 void *image = __loadIOKit();
 103                 if (image) dyfunc = NSAddressOfSymbol(NSLookupSymbolInImage(image, "_IOObjectRelease", NSLOOKUPSYMBOLINIMAGE_OPTION_BIND));
 104         }
 105         return dyfunc ? dyfunc(object) : KERN_FAILURE;
 106 }
 107
 108
 109 __private_extern__ CFTypeRef
 110 _IORegistryEntryCreateCFProperty(io_registry_entry_t entry, CFStringRef key, CFAllocatorRef allocator, IOOptionBits options)
 111 {
 112         static CFTypeRef (*dyfunc)(io_registry_entry_t, CFStringRef, CFAllocatorRef, IOOptionBits) = NULL;
 113         if (!dyfunc) {
 114                 void *image = __loadIOKit();
 115                 if (image) dyfunc = NSAddressOfSymbol(NSLookupSymbolInImage(image, "_IORegistryEntryCreateCFProperty", NSLOOKUPSYMBOLINIMAGE_OPTION_BIND));
 116         }
 117         return dyfunc ? dyfunc(entry, key, allocator, options) : NULL;
 118 }
 119
 120
 121 __private_extern__ kern_return_t
 122 _IORegistryEntryCreateCFProperties(io_registry_entry_t entry, CFMutableDictionaryRef *properties, CFAllocatorRef allocator, IOOptionBits options)
 123 {
 124         static kern_return_t (*dyfunc)(io_registry_entry_t, CFMutableDictionaryRef *, CFAllocatorRef, IOOptionBits) = NULL;
 125         if (!dyfunc) {
 126                 void *image = __loadIOKit();
 127                 if (image) dyfunc = NSAddressOfSymbol(NSLookupSymbolInImage(image, "_IORegistryEntryCreateCFProperties", NSLOOKUPSYMBOLINIMAGE_OPTION_BIND));
 128         }
 129         return dyfunc ? dyfunc(entry, properties, allocator, options) : KERN_FAILURE;
 130 }
 131
 132
 133 __private_extern__ kern_return_t
 134 _IORegistryEntryGetParentEntry(io_registry_entry_t entry, const io_name_t plane, io_registry_entry_t *parent)
 135 {
 136         static kern_return_t (*dyfunc)(io_registry_entry_t, const io_name_t, io_registry_entry_t *) = NULL;
 137         if (!dyfunc) {
 138                 void *image = __loadIOKit();
 139                 if (image) dyfunc = NSAddressOfSymbol(NSLookupSymbolInImage(image, "_IORegistryEntryGetParentEntry", NSLOOKUPSYMBOLINIMAGE_OPTION_BIND));
 140         }
 141         return dyfunc ? dyfunc(entry, plane, parent) : NULL;
 142 }
 143
 144
 145 __private_extern__ kern_return_t
 146 _IORegistryEntryGetPath(io_registry_entry_t entry, const io_name_t plane, io_string_t path)
 147 {
 148         static kern_return_t (*dyfunc)(io_registry_entry_t, const io_name_t, io_string_t) = NULL;
 149         if (!dyfunc) {
 150                 void *image = __loadIOKit();
 151                 if (image) dyfunc = NSAddressOfSymbol(NSLookupSymbolInImage(image, "_IORegistryEntryGetPath", NSLOOKUPSYMBOLINIMAGE_OPTION_BIND));
 152         }
 153         return dyfunc ? dyfunc(entry, plane, path) : KERN_FAILURE;
 154 }
 155
 156
 157 __private_extern__ kern_return_t
 158 _IOServiceGetMatchingServices(mach_port_t masterPort, CFDictionaryRef matching, io_iterator_t *existing)
 159 {
 160         static kern_return_t (*dyfunc)(mach_port_t, CFDictionaryRef, io_iterator_t *) = NULL;
 161         if (!dyfunc) {
 162                 void *image = __loadIOKit();
 163                 if (image) dyfunc = NSAddressOfSymbol(NSLookupSymbolInImage(image, "_IOServiceGetMatchingServices", NSLOOKUPSYMBOLINIMAGE_OPTION_BIND));
 164         }
 165         return dyfunc ? dyfunc(masterPort, matching, existing) : KERN_FAILURE;
 166 }
 167
 168
 169 __private_extern__ CFMutableDictionaryRef
 170 _IOServiceMatching(const char *name)
 171 {
 172         static CFMutableDictionaryRef (*dyfunc)(const char *) = NULL;
 173         if (!dyfunc) {
 174                 void *image = __loadIOKit();
 175                 if (image) dyfunc = NSAddressOfSymbol(NSLookupSymbolInImage(image, "_IOServiceMatching", NSLOOKUPSYMBOLINIMAGE_OPTION_BIND));
 176         }
 177         return dyfunc ? dyfunc(name) : NULL;
 178 }