84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
/* Get ELF header.
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Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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Written by Ulrich Drepper <drepper@redhat.com>, 1998.
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This program is Open Source software; you can redistribute it and/or
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modify it under the terms of the Open Software License version 1.0 as
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published by the Open Source Initiative.
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You should have received a copy of the Open Software License along
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with this program; if not, you may obtain a copy of the Open Software
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License version 1.0 from http://www.opensource.org/licenses/osl.php or
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by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
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3001 King Ranch Road, Ukiah, CA 95482. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <gelf.h>
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#include <string.h>
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#include "libelfP.h"
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GElf_Ehdr *
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gelf_getehdr (Elf *elf, GElf_Ehdr *dest)
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{
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GElf_Ehdr *result = NULL;
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if (elf == NULL)
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return NULL;
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if (unlikely (elf->kind != ELF_K_ELF))
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{
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__libelf_seterrno (ELF_E_INVALID_HANDLE);
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return NULL;
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}
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rwlock_rdlock (elf->lock);
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if (elf->class == ELFCLASS32)
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{
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Elf32_Ehdr *ehdr = elf->state.elf32.ehdr;
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/* Maybe no ELF header was created yet. */
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if (ehdr == NULL)
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__libelf_seterrno (ELF_E_WRONG_ORDER_EHDR);
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else
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{
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/* Convert the 32-bit struct to an 64-bit one. */
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memcpy (dest->e_ident, ehdr->e_ident, EI_NIDENT);
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#define COPY(name) \
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dest->name = ehdr->name
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COPY (e_type);
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COPY (e_machine);
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COPY (e_version);
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COPY (e_entry);
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COPY (e_phoff);
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COPY (e_shoff);
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COPY (e_flags);
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COPY (e_ehsize);
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COPY (e_phentsize);
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COPY (e_phnum);
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COPY (e_shentsize);
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COPY (e_shnum);
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COPY (e_shstrndx);
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result = dest;
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}
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}
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else
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{
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/* Maybe no ELF header was created yet. */
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if (elf->state.elf64.ehdr == NULL)
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__libelf_seterrno (ELF_E_WRONG_ORDER_EHDR);
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else
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result = memcpy (dest, elf->state.elf64.ehdr, sizeof (*dest));
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}
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rwlock_unlock (elf->lock);
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return result;
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}
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