dyld3/SharedCacheRuntime.h

   1 /*
   2  * Copyright (c) 2017 Apple 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
  26 #ifndef __DYLD_SHARED_CACHE_RUNTIME_H__
  27 #define __DYLD_SHARED_CACHE_RUNTIME_H__
  28
  29 #include <string.h>
  30 #include <stdint.h>
  31
  32 #include "DyldSharedCache.h"
  33 #include "PointerAuth.h"
  34
  35 namespace dyld3 {
  36
  37 struct SharedCacheOptions {
  38     const char*     cacheDirOverride;
  39     bool            forcePrivate;
  40     bool            useHaswell;
  41     bool            verbose;
  42     bool            disableASLR;
  43 };
  44
  45 struct SharedCacheLoadInfo {
  46     typedef const DyldSharedCache* __ptrauth_dyld_address_auth DyldCachePtrType;
  47     DyldCachePtrType             loadAddress;
  48     long                         slide;
  49     const char*                  errorMessage;
  50     char                         path[256];
  51 };
  52
  53 bool loadDyldCache(const SharedCacheOptions& options, SharedCacheLoadInfo* results);
  54
  55
  56 struct SharedCacheFindDylibResults {
  57     const mach_header*          mhInCache;
  58     const char*                 pathInCache;
  59     long                        slideInCache;
  60     const closure::Image*       image;
  61 };
  62
  63 bool findInSharedCacheImage(const SharedCacheLoadInfo& loadInfo, const char* dylibPathToFind, SharedCacheFindDylibResults* results);
  64
  65 bool pathIsInSharedCacheImage(const SharedCacheLoadInfo& loadInfo, const char* dylibPathToFind);
  66
  67 void deallocateExistingSharedCache();
  68
  69 } // namespace dyld3
  70
  71 #endif // __DYLD_SHARED_CACHE_RUNTIME_H__
  72
  73