FreeBSD/Linux Kernel Cross Reference
sys/libsa/libsa/mkext.h

     #ifndef _MKEXT_H_
     #define _MKEXT_H_ 1
     
     #include <sys/cdefs.h>
     #include <sys/types.h>
     
     #include <mach/machine.h>
     
     #define MKEXT_MAGIC 'MKXT'
    #define MKEXT_SIGN 'MOSX'
    
    #define MKEXT_EXTN ".mkext"
    
    // All binary values are big-endian
    
    // If all fields are 0 then this file slot is empty
    // If compsize is zero then the file isn't compressed.
    typedef struct mkext_file {
        size_t offset;         // 4 bytes
        size_t compsize;       // 4 bytes
        size_t realsize;       // 4 bytes
        time_t modifiedsecs;   // 4 bytes
    } mkext_file;
    
    // The plist file entry is mandatory, but module may be empty
    typedef struct mkext_kext {
        mkext_file plist;      // 16 bytes
        mkext_file module;     // 16 bytes
    } mkext_kext;
    
    typedef struct mkext_header {
        u_int32_t magic;          // 'MKXT'
        u_int32_t signature;      // 'MOSX'
        u_int32_t length;
        u_int32_t adler32;
        u_int32_t version;        // vers resource, currently '1.0.0', 0x01008000
        u_int32_t numkexts;
        cpu_type_t cputype;       // CPU_TYPE_ANY for fat executables
        cpu_subtype_t cpusubtype; // CPU_SUBTYPE_MULITPLE for executables
        mkext_kext kext[1];       // 64 bytes/entry
    } mkext_header;
    
    __BEGIN_DECLS
    __private_extern__ u_int8_t *
    compress_lzss(u_int8_t *dst, u_int32_t dstlen, u_int8_t *src, u_int32_t srclen);
    
    __private_extern__ int
    decompress_lzss(u_int8_t *dst, u_int8_t *src, u_int32_t srclen);
    
    __private_extern__ u_int32_t
    adler32(u_int8_t *src, int32_t length);
    
    __END_DECLS
    
    #endif /* _MKEXT_H_ */

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