GELF_GETREL(3)						   BSD Library Functions Manual 					    GELF_GETREL(3)

NAME

     gelf_getrel, gelf_update_rel -- read and update ELF relocation entries

LIBRARY

     ELF Access Library (libelf, -lelf)

SYNOPSIS

     #include <gelf.h>

     GElf_Rel *
     gelf_getrel(Elf_Data *data, int ndx, GElf_Rel *rel);

     int
     gelf_update_rel(Elf_Data *data, int ndx, GElf_Rel *rel);

DESCRIPTION

     These convenience functions are used to retrieve and update class-dependent Elf32_Rel or Elf64_Rel structures in an ELF object.

     Argument data is an Elf_Data descriptor associated with a section of type SHT_REL.  Argument ndx is the index of the entry being retrieved or
     updated.  The class-independent GElf_Rel structure is described in gelf(3).

     Function gelf_getrel() retrieves the class-dependent entry at index ndx in data buffer data and copies it to the destination pointed to by
     argument rel after translation to class-independent form.

     Function gelf_update_rel() converts the class-independent entry pointed to by argument rel to class-dependent form, and writes it to the
     entry at index ndx in the data buffer described by argument data.	Function gelf_update_rel() signals an error if any of the values in the
     class-independent representation exceeds the representable limits of the target type.

RETURN VALUES

     Function gelf_getrel() returns the value of argument rel if successful, or NULL in case of an error.  Function gelf_update_rel() returns a
     non-zero value if successful, or zero in case of an error.

ERRORS

     These functions may fail with the following errors:

     [ELF_E_ARGUMENT]  Arguments data or rel were NULL.

     [ELF_E_ARGUMENT]  Argument ndx was less than zero or larger than the number of entries in the data descriptor.

     [ELF_E_ARGUMENT]  Data descriptor data was not associated with a section of type SHT_REL.

     [ELF_E_RANGE]     A value was not representable in the target type.

SEE ALSO

     elf(3), elf_getdata(3), elf_getscn(3), gelf(3)

BSD
								  August 29, 2006							       BSD