GELF_GETSYMINFO(3) | Library Functions Manual | GELF_GETSYMINFO(3)

# NAME

`gelf_getsyminfo`, `gelf_update_syminfo` — read and update symbol information

# SYNOPSIS

ELF Access Library (libelf, -lelf)
`#include <gelf.h>`

GElf_Syminfo *
`gelf_getsyminfo`(Elf_Data *data, int ndx, GElf_Syminfo *syminfo);

int
`gelf_update_syminfo`(Elf_Data *data, int ndx, GElf_Syminfo *syminfo);

# DESCRIPTION

These convenience functions are used to retrieve and update class-dependent Elf32_Syminfo and Elf64_Syminfo records in an ELF object.

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

Function `gelf_getsyminfo`() retrieves class-dependent record at index ndx in data buffer data and copies it to the destination pointed to by argument syminfo after translation to class-independent form.

Function `gelf_update_syminfo`() converts the class-independent record pointed to by argument syminfo to class-dependent form, and writes it to the record at index ndx in the data buffer described by argument data.

# RETURN VALUES

Function `gelf_getsyminfo`() returns the value of argument syminfo if successful, or NULL in case of an error. Function `gelf_update_syminfo`() 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 syminfo were NULL.
[`ELF_E_ARGUMENT`]
  Argument ndx was less than zero or larger than the number of symbols in the data descriptor.
[`ELF_E_ARGUMENT`]
  Data descriptor data was not associated with a section containing symbol information.
[`ELF_E_VERSION`]
  The Elf_Data descriptor denoted by argument data is associated with an ELF object with an unsupported version.

# SEE ALSO

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

April 22, 2019 | Debian