gelf_getshdr(3) – retrieve the class-dependent section header

GELF_GETSHDR(3) Library Functions Manual GELF_GETSHDR(3)

NAME

elf32_getshdr, elf64_getshdr, gelf_getshdr — retrieve the class-dependent section header

LIBRARY

library “libelf”

SYNOPSIS

#include <libelf.h>

Elf32_Shdr *
elf32_getshdr(Elf_Scn *scn);

Elf64_Shdr *
elf64_getshdr(Elf_Scn *scn);

#include <gelf.h>

GElf_Shdr *
gelf_getshdr(Elf_Scn *scn, GElf_Shdr *shdr);

DESCRIPTION

These functions return a pointer to the ELF Section Header data structure associated with section descriptor scn.

Function elf32_getshdr() retrieves a pointer to an Elf32_Shdr structure. Section descriptor scn must be associated with an ELF descriptor of class ELFCLASS32.

Function elf64_getshdr() retrieves a pointer to an Elf64_Shdr structure. Section descriptor scn must be associated with an ELF descriptor of class ELFCLASS64.

Function gelf_getshdr() copies the values in the section header associated with argument scn to the structure pointed to be argument dst. The GElf_Shdr data structure is described in gelf(3).

RETURN VALUES

Functions elf32_getshdr() and elf64_getshdr() return a valid pointer to the appropriate section header on success or NULL if an error was encountered.

Function gelf_getshdr() returns argument dst if successful, or NULL if an error was encountered.

ERRORS

These functions may fail with the following errors:

[ELF_E_ARGUMENT]: Arguments scn or shdr were NULL.
[ELF_E_ARGUMENT]: Argument scn was not associated a descriptor for an ELF object.
[ELF_E_CLASS]: The ELF class associated with the section descriptor scn did not match the class expected by the API.