/*32.newehdr.c - implementation of the elf{32,64}_newehdr(3) functions.Copyright (C) 1995 - 2000 Michael Riepe <michael@stud.uni-hannover.de>This library is free software; you can redistribute it and/ormodify it under the terms of the GNU Library General PublicLicense as published by the Free Software Foundation; eitherversion 2 of the License, or (at your option) any later version.This library is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNULibrary General Public License for more details.You should have received a copy of the GNU Library General PublicLicense along with this library; if not, write to the Free SoftwareFoundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.*/#include <private.h>#ifndef lintstatic const char rcsid[] = "@(#) $Id: 32.newehdr.c,v 1.9 2000/03/31 12:42:32 michael Exp $";#endif /* lint */static char*_elf_newehdr(Elf *elf, unsigned cls) {    size_t size;    if (!elf) {	return NULL;    }    elf_assert(elf->e_magic == ELF_MAGIC);    if (elf->e_readable) {	return _elf_getehdr(elf, cls);    }    else if (!elf->e_ehdr) {	size = _msize(cls, _elf_version, ELF_T_EHDR);	elf_assert(size);	if ((elf->e_ehdr = (char*)malloc(size))) {	    memset(elf->e_ehdr, 0, size);	    elf->e_free_ehdr = 1;	    elf->e_ehdr_flags |= ELF_F_DIRTY;	    elf->e_kind = ELF_K_ELF;	    elf->e_class = cls;	    return elf->e_ehdr;	}	seterr(ERROR_MEM_EHDR);    }    else if (elf->e_class != cls) {	seterr(ERROR_CLASSMISMATCH);    }    else {	elf_assert(elf->e_kind == ELF_K_ELF);	return elf->e_ehdr;    }    return NULL;}Elf32_Ehdr*elf32_newehdr(Elf *elf) {    return (Elf32_Ehdr*)_elf_newehdr(elf, ELFCLASS32);}#if __LIBELF64Elf64_Ehdr*elf64_newehdr(Elf *elf) {    return (Elf64_Ehdr*)_elf_newehdr(elf, ELFCLASS64);}unsigned longgelf_newehdr(Elf *elf, int cls) {    if (!valid_class(cls) || !_msize(cls, _elf_version, ELF_T_EHDR)) {	seterr(ERROR_UNKNOWN_CLASS);	return 0;    }    if (!_elf_newehdr(elf, cls)) {	return 0;    }    return 1;	/* really? */}#endif /* __LIBELF64 */