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elf_getshdr(3E)

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NAME

elf32_getshdr, elf64_getshdr — retrieve class-dependent section header for elf32 and elf64 files, respectively

SYNOPSIS

cc [flag... ] file... -lelf [library] ...

#include <libelf.h>

Elf32_Shdr *elf32_getshdr(Elf_Scn *scn); Elf64_Shdr *elf64_getshdr(Elf_Scn *scn);

DESCRIPTION

For a 32-bit class file, elf32_getshdr returns a pointer to a section header for the section descriptor scn. Otherwise, the file is not a 32-bit class file, scn was null, or an error occurred; elf32_getshdr then returns NULL. The header includes the following members.

Elf32_Word sh_name; Elf32_Word sh_type; Elf32_Word sh_flags; Elf32_Addr sh_addr; Elf32_Off sh_offset; Elf32_Word sh_size; Elf32_Word sh_link; Elf32_Word sh_info; Elf32_Word sh_addralign; Elf32_Word sh_entsize;

For a 64-bit class file, elf64_getshdr returns a pointer to a section header for the section descriptor scn. Otherwise, the file is not a 64-bit class file, scn was null, or an error occurred; elf64_getshdr then returns NULL. The header includes the following members.

Elf64_Word sh_name; Elf64_Word sh_type; Elf64_Word sh_flags; Elf64_Addr sh_addr; Elf64_Off sh_offset; Elf64_Word sh_size; Elf64_Word sh_link; Elf64_Word sh_info; Elf64_Word sh_addralign; Elf64_Word sh_entsize;

If the program is building a new file, it is responsible for creating the file's ELF header before creating sections.

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