1 /*
2 * version.c - implementation of the elf_version(3) function.
3 * Copyright (C) 1995 - 1998, 2007 Michael Riepe
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
18 */
19
20 #include <private.h>
21
22 #ifndef lint
23 static const char rcsid[] = "@(#) $Id: version.c,v 1.8 2008/05/23 08:15:35 michael Exp $";
24 #endif /* lint */
25
26 unsigned
elf_version(unsigned ver)27 elf_version(unsigned ver) {
28 const char *s;
29 unsigned tmp;
30
31 if ((s = getenv("LIBELF_SANITY_CHECKS"))) {
32 _elf_sanity_checks = (int)strtol(s, (char**)NULL, 0);
33 }
34 if (ver == EV_NONE) {
35 return EV_CURRENT;
36 }
37 if (!valid_version(ver)) {
38 seterr(ERROR_UNKNOWN_VERSION);
39 return EV_NONE;
40 }
41 tmp = _elf_version == EV_NONE ? EV_CURRENT : _elf_version;
42 _elf_version = ver;
43 return tmp;
44 }
45