libsa/libsa/mkext.h

   1 #ifndef _MKEXT_H_
   2 #define _MKEXT_H_ 1
   3
   4 #include <sys/cdefs.h>
   5 #include <sys/types.h>
   6
   7 #include <mach/machine.h>
   8
   9 #define MKEXT_MAGIC 'MKXT'
  10 #define MKEXT_SIGN 'MOSX'
  11
  12 #define MKEXT_EXTN ".mkext"
  13
  14 // All binary values are big-endian
  15
  16 // If all fields are 0 then this file slot is empty
  17 // If compsize is zero then the file isn't compressed.
  18 typedef struct mkext_file {
  19     size_t offset;         // 4 bytes
  20     size_t compsize;       // 4 bytes
  21     size_t realsize;       // 4 bytes
  22     time_t modifiedsecs;   // 4 bytes
  23 } mkext_file;
  24
  25 // The plist file entry is mandatory, but module may be empty
  26 typedef struct mkext_kext {
  27     mkext_file plist;      // 16 bytes
  28     mkext_file module;     // 16 bytes
  29 } mkext_kext;
  30
  31 typedef struct mkext_header {
  32     u_int32_t magic;          // 'MKXT'
  33     u_int32_t signature;      // 'MOSX'
  34     u_int32_t length;
  35     u_int32_t adler32;
  36     u_int32_t version;        // vers resource, currently '1.0.0', 0x01008000
  37     u_int32_t numkexts;
  38     cpu_type_t cputype;       // CPU_TYPE_ANY for fat executables
  39     cpu_subtype_t cpusubtype; // CPU_SUBTYPE_MULITPLE for executables
  40     mkext_kext kext[1];       // 64 bytes/entry
  41 } mkext_header;
  42
  43 __BEGIN_DECLS
  44 __private_extern__ u_int8_t *
  45 compress_lzss(u_int8_t *dst, u_int32_t dstlen, u_int8_t *src, u_int32_t srclen);
  46
  47 __private_extern__ int
  48 decompress_lzss(u_int8_t *dst, u_int8_t *src, u_int32_t srclen);
  49
  50 __private_extern__ u_int32_t
  51 adler32(u_int8_t *src, int32_t length);
  52
  53 __END_DECLS
  54
  55 #endif /* _MKEXT_H_ */