/*+
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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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA+
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 */+
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+
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#include <private.h>+
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+
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#ifndef lint+
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static const char rcsid[] = "@(#) $Id: 32.newehdr.c,v 1.15 2006/07/07 22:15:31 michael Exp $";+
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#endif /* lint */+
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+
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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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+
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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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+
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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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+
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#if __LIBELF64+
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+
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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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+
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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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+
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#endif /* __LIBELF64 */+
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