NAME

elf32_getehdr, elf32_newehdr − retrieve class-dependent object file header

SYNOPSIS

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

#include <libelf.h>

Elf32_Ehdr ∗elf32_getehdr(Elf ∗elf);

Elf32_Ehdr ∗elf32_newehdr(Elf ∗elf);

DESCRIPTION

For a 32-bit class file, elf32_getehdr() returns a pointer to an ELF header, if one is available for the ELF descriptor elf. If no header exists for the descriptor, elf32_newehdr() allocates a “clean” one, but it otherwise behaves the same as elf32_getehdr().  It does not allocate a new header if one exists already.  If no header exists (for elf32_getehdr()), one cannot be created (for elf32_newehdr()), a system error occurs, the file is not a 32-bit class file, or elf is null, both functions return a null pointer. 

The header includes the following members. 

unsigned chare_ident[EI_NIDENT];
Elf32_Halfe_type;
Elf32_Halfe_machine;
Elf32_Worde_version;
Elf32_Addre_entry;
Elf32_Offe_phoff;
Elf32_Offe_shoff;
Elf32_Worde_flags;
Elf32_Halfe_ehsize;
Elf32_Halfe_phentsize;
Elf32_Halfe_phnum;
Elf32_Halfe_shentsize;
Elf32_Halfe_shnum;
Elf32_Halfe_shstrndx;

elf32_newehdr() automatically sets the ELF_F_DIRTY bit (see elf_flagdata(3E)).  A program may use elf_getident() to inspect the identification bytes from a file. 

SEE ALSO

elf(3E), elf_begin(3E), elf_flagdata(3E), elf_getident(3E)

SunOS 5.1  —  Last change: 5 Jul 1990