1 /* Coordinate ELF library and application versions.
2 Copyright (C) 1998, 1999, 2000, 2002 Red Hat, Inc.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 1998.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, version 2.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
17
18 #ifdef HAVE_CONFIG_H
19 # include <config.h>
20 #endif
21
22 #include <libelfP.h>
23
24
25 /* Is the version initialized? */
26 int __libelf_version_initialized;
27
28 /* Currently selected version. */
29 unsigned int __libelf_version = EV_CURRENT;
30
31
32 unsigned int
elf_version(version)33 elf_version (version)
34 unsigned int version;
35 {
36 if (version == EV_NONE)
37 return __libelf_version;
38
39 if (likely (version < EV_NUM))
40 {
41 /* Phew, we know this version. */
42 unsigned int last_version = __libelf_version;
43
44 /* Store the new version. */
45 __libelf_version = version;
46
47 /* Signal that the version is now initialized. */
48 __libelf_version_initialized = 1;
49
50 /* And return the last version. */
51 return last_version;
52 }
53
54 /* We cannot handle this version. */
55 __libelf_seterrno (ELF_E_UNKNOWN_VERSION);
56 return EV_NONE;
57 }
58 INTDEF(elf_version)
59