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/* Get ELF header.
Copyright (C) 1998, 1999, 2000, 2001, 2002, 2005 Red Hat, Inc.
Written by Ulrich Drepper <drepper@redhat.com>, 1998.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, version 2.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gelf.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include "libelfP.h"
GElf_Ehdr *
gelf_getehdr (elf, dest)
Elf *elf;
GElf_Ehdr *dest;
{
GElf_Ehdr *result = NULL;
if (elf == NULL)
return NULL;
if (unlikely (elf->kind != ELF_K_ELF))
{
__libelf_seterrno (ELF_E_INVALID_HANDLE);
return NULL;
}
rwlock_rdlock (elf->lock);
/* The following is an optimization: the ehdr element is at the same
position in both the elf32 and elf64 structure. */
if (offsetof (struct Elf, state.elf32.ehdr)
!= offsetof (struct Elf, state.elf64.ehdr))
abort ();
/* Just pick one of the values. */
if (unlikely (elf->state.elf64.ehdr == NULL))
/* Maybe no ELF header was created yet. */
__libelf_seterrno (ELF_E_WRONG_ORDER_EHDR);
else if (elf->class == ELFCLASS32)
{
Elf32_Ehdr *ehdr = elf->state.elf32.ehdr;
/* Convert the 32-bit struct to an 64-bit one. */
memcpy (dest->e_ident, ehdr->e_ident, EI_NIDENT);
#define COPY(name) \
dest->name = ehdr->name
COPY (e_type);
COPY (e_machine);
COPY (e_version);
COPY (e_entry);
COPY (e_phoff);
COPY (e_shoff);
COPY (e_flags);
COPY (e_ehsize);
COPY (e_phentsize);
COPY (e_phnum);
COPY (e_shentsize);
COPY (e_shnum);
COPY (e_shstrndx);
result = dest;
}
else
result = memcpy (dest, elf->state.elf64.ehdr, sizeof (*dest));
rwlock_unlock (elf->lock);
return result;
}
INTDEF(gelf_getehdr)
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