ELFFSIZE(3E)                                                    ELFFSIZE(3E)



NAME
     elffsize: elf32fsize elf64fsize - return the size of an object file
     type

SYNOPSIS
     cc [flag ...] file ...  -lelf [library ...]

     #include <libelf.h>

     sizet elf32fsize(ElfType type, sizet count, unsigned ver);

     sizet elf64fsize(ElfType type, sizet count, unsigned ver);

     #define LIBELFXTND64

     Elf64Xword elf64fsize(ElfType type, Elf64Xword count, unsigned ver);


DESCRIPTION

     elf32fsize gives the size in bytes of the 32-bit file representation of

     count data objects with the given type.  The library uses version ver to

     calculate the size [see elf(3E) and elfversion(3E)].


     Constant values are available for the sizes of fundamental types.


                ElfType        File Size           Memory Size

               _____________________________________________________
                           |                 |
               ELFTADDR    ELF32FSZADDR    sizeof(Elf32Addr)
                           |                 |
               ELFTBYTE    1                 sizeof(unsigned char)
                           |                 |
               ELFTHALF    ELF32FSZHALF    sizeof(Elf32Half)
                           |                 |
               ELTTOFF     ELF32FSZOFF     sizeof(Elf32Off)
                           |                 |
               ELFTSWORD   ELF32FSZSWORD   sizeof(Elf32Sword)
                           |                 |
               ELFTWORD    ELF32FSZWORD    sizeof(Elf32Word)
                           |                 |

               ____________|_________________|______________________


     elf32fsize returns zero if the value of type or ver is unknown.  See

     elfxlate(3E) for a list of the type values.


     The 64-bit class works identically, simply replacing all instances of 32

     in the description and table with 64.


SEE ALSO

     elf(3E), elfversion(3E), elfxlate(3E).


NOTES

     The use of a sizet in a 32-bit compile with elf64fsize is unfortunate,

     since that makes it impossible to deal with certain object files.  If,

     when the 32-bit app is compiled, _LIBELF_XTND_64 is defined, then the

     function interface changes to have 64-bit fields.  If LIBELFXTND64 is

     defined at compile-time, then instead of linking with -lelf, link with

     -lelf_xtnd.  There is a corresponding -ldwarfxtnd.  It is essential that

     a 32-bit application compiled with _LIBELF_XTND_64 be *entirely* compiled

     with LIBELFXTND64 defined.





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ELFFSIZE(3E)                                                    ELFFSIZE(3E)



     Applications which are built as 64-bit applications can ignore
     _LIBELF_XTND_64: it has no effect on them and 64-bit applications always
     link with -lelf never with -lelf_xtnd.




















































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