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GELF_GETREL(3)	       FreeBSD Library Functions Manual		GELF_GETREL(3)

NAME
     gelf_getrel, gelf_update_rel -- read and update ELF relocation entries

LIBRARY
     ELF Parsing 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-depen-
     dent 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 up-
     dated.  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	argu-
     ment 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-in-
     dependent 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 num-
		       ber 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)

FreeBSD	13.0			August 29, 2006			  FreeBSD 13.0

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

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