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81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/*
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* 32.newehdr.c - implementation of the elf{32,64}_newehdr(3) functions.
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* Copyright (C) 1995 - 2006 Michael Riepe
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <private.h>
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#ifndef lint
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static const char rcsid[] = "@(#) $Id: 32.newehdr.c,v 1.16 2008/05/23 08:15:34 michael Exp $";
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#endif /* lint */
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static char*
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_elf_newehdr(Elf *elf, unsigned cls) {
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size_t size;
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if (!elf) {
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return NULL;
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}
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elf_assert(elf->e_magic == ELF_MAGIC);
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if (elf->e_readable) {
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return _elf_getehdr(elf, cls);
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}
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else if (!elf->e_ehdr) {
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size = _msize(cls, _elf_version, ELF_T_EHDR);
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elf_assert(size);
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if ((elf->e_ehdr = (char*)malloc(size))) {
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memset(elf->e_ehdr, 0, size);
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elf->e_ehdr_flags |= ELF_F_DIRTY;
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elf->e_kind = ELF_K_ELF;
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elf->e_class = cls;
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return elf->e_ehdr;
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}
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seterr(ERROR_MEM_EHDR);
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}
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else if (elf->e_class != cls) {
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seterr(ERROR_CLASSMISMATCH);
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}
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else {
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elf_assert(elf->e_kind == ELF_K_ELF);
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return elf->e_ehdr;
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}
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return NULL;
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}
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Elf32_Ehdr*
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elf32_newehdr(Elf *elf) {
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return (Elf32_Ehdr*)_elf_newehdr(elf, ELFCLASS32);
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}
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#if __LIBELF64
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Elf64_Ehdr*
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elf64_newehdr(Elf *elf) {
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return (Elf64_Ehdr*)_elf_newehdr(elf, ELFCLASS64);
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}
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unsigned long
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gelf_newehdr(Elf *elf, int cls) {
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if (!valid_class(cls) || !_msize(cls, _elf_version, ELF_T_EHDR)) {
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seterr(ERROR_UNKNOWN_CLASS);
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return 0;
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}
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return (unsigned long)_elf_newehdr(elf, cls);
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}
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#endif /* __LIBELF64 */
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