/*

 * version.c - implementation of the elf_version(3) function.

 * Copyright (C) 1995 - 1998, 2007 Michael Riepe

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 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 of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

#include <private.h>

#ifndef lint

static const char rcsid[] = "@(#) $Id: version.c,v 1.7 2007/09/07 12:07:59 michael Exp $";

#endif /* lint */

unsigned

elf_version(unsigned ver) {

    const char *s;

    unsigned tmp;

    if ((s = getenv("LIBELF_SANITY_CHECKS"))) {

	_elf_sanity_checks = (int)strtol(s, (char**)NULL, 0);

    }

    if (ver == EV_NONE) {

	return EV_CURRENT;

    }

    if (!valid_version(ver)) {

	seterr(ERROR_UNKNOWN_VERSION);

	return EV_NONE;

    }

    tmp = _elf_version == EV_NONE ? EV_CURRENT : _elf_version;

    _elf_version = ver;

    return tmp;

}