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GELF_GETSYM(3)		 BSD Library Functions Manual		GELF_GETSYM(3)

NAME
     gelf_getsym, gelf_update_sym -- read and update symbol information

LIBRARY
     ELF Access	Library	(libelf, -lelf)

SYNOPSIS
     #include <gelf.h>

     GElf_Sym *
     gelf_getsym(Elf_Data *data, int ndx, GElf_Sym *sym);

     int
     gelf_update_sym(Elf_Data *data, int ndx, GElf_Sym *sym);

DESCRIPTION
     These convenience functions are used to retrieve and update class-depen-
     dent Elf32_Sym and	Elf64_Sym structures in	an ELF object.

     Argument data is an Elf_Data descriptor associated	with a section of type
     SHT_SYMTAB, SHT_DYNSYM or SHT_GNU_versym.	Argument ndx is	the index of
     the symbol	being retrieved	or updated.  The class-independent GElf_Sym
     structure is described in gelf(3).

     Function gelf_getsym() retrieves class-dependent symbol information at
     index ndx in data buffer data and copies it to the	destination pointed to
     by	argument sym after translation to class-independent form.

     Function gelf_update_sym()	converts the class-independent symbol informa-
     tion pointed to by	argument sym to	class-dependent	form, and writes it to
     the symbol	entry at index ndx in the data buffer described	by argument
     data.  Function gelf_update_sym() 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_getsym() returns the	value of argument sym if successful,
     or	NULL in	case of	an error.  Function gelf_update_sym() 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 sym were NULL.

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

     [ELF_E_ARGUMENT]  Data descriptor data was	not associated with a section
		       containing symbol information.

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

SEE ALSO
     elf(3), elf_getdata(3), elf_getscn(3), gelf(3), gelf_getsyminfo(3),
     gelf_update_syminfo(3)

BSD				August 29, 2006				   BSD

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

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