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GELF_GETRELA(3)		 BSD Library Functions Manual	       GELF_GETRELA(3)

NAME
     gelf_getrela, gelf_update_rela -- read and	update ELF relocation entries
     with addends

LIBRARY
     ELF Access	Library	(libelf, -lelf)

SYNOPSIS
     #include <gelf.h>

     GElf_Rela *
     gelf_getrela(Elf_Data *data, int ndx, GElf_Rela *rela);

     int
     gelf_update_rela(Elf_Data *data, int ndx, GElf_Rela *rela);

DESCRIPTION
     These convenience functions are used to retrieve and update class-depen-
     dent Elf32_Rela or	Elf64_Rela structures in an ELF	object.

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

     Function gelf_getrela() retrieves the class-dependent entry at index ndx
     in	data buffer data and copies it to the destination pointed to by	argu-
     ment rela after translation to class-independent form.

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

RETURN VALUES
     Function gelf_getrela() returns the value of argument rela	if successful,
     or	NULL in	case of	an error.  Function gelf_update_rela() 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 rela were NULL.

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

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

     [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

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO

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