gcore.tproj/dyld_shared_cache.h

   1 /*
   2  * Copyright (c) 2015 Apple Inc.  All rights reserved.
   3  */
   4
   5 #include <inttypes.h>
   6 #include <stdbool.h>
   7 #include <uuid/uuid.h>
   8 #include <sys/types.h>
   9
  10 #ifndef _DYLD_SHARED_CACHE_H
  11 #define _DYLD_SHARED_CACHE_H
  12
  13 /*
  14  * Guilty knowledge of dyld shared cache internals, used to verify shared cache
  15  */
  16 struct copied_dyld_cache_header {
  17     char                magic[16];              // e.g. "dyld_v0  i386"
  18     uint32_t    mappingOffset;          // file offset to first dyld_cache_mapping_info
  19     uint32_t    mappingCount;           // number of dyld_cache_mapping_info entries
  20     uint32_t    imagesOffset;           // file offset to first dyld_cache_image_info
  21     uint32_t    imagesCount;            // number of dyld_cache_image_info entries
  22     uint64_t    dyldBaseAddress;        // base address of dyld when cache was built
  23     uint64_t    codeSignatureOffset;    // file offset of code signature blob
  24     uint64_t    codeSignatureSize;      // size of code signature blob (zero means to end of file)
  25     uint64_t    slideInfoOffset;        // file offset of kernel slid info
  26     uint64_t    slideInfoSize;          // size of kernel slid info
  27     uint64_t    localSymbolsOffset;     // file offset of where local symbols are stored
  28     uint64_t    localSymbolsSize;       // size of local symbols information
  29     uint8_t             uuid[16];               // unique value for each shared cache file
  30     uint64_t    cacheType;              // 1 for development, 0 for optimized
  31 };
  32
  33 extern bool get_uuid_from_shared_cache_mapping(const void *, size_t, uuid_t);
  34 extern char *shared_cache_filename(const uuid_t);
  35
  36 #endif /* _DYLD_SHARED_CACHE_H */