| /* Coordinate ELF library and application versions. |
| Copyright (C) 1998, 1999, 2000, 2002, 2015 Red Hat, Inc. |
| This file is part of elfutils. |
| Contributed by Ulrich Drepper <drepper@redhat.com>, 1998. |
| |
| This file is free software; you can redistribute it and/or modify |
| it under the terms of either |
| |
| * the GNU Lesser General Public License as published by the Free |
| Software Foundation; either version 3 of the License, or (at |
| your option) any later version |
| |
| or |
| |
| * the GNU General Public License as published by the Free |
| Software Foundation; either version 2 of the License, or (at |
| your option) any later version |
| |
| or both in parallel, as here. |
| |
| elfutils 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 |
| General Public License for more details. |
| |
| You should have received copies of the GNU General Public License and |
| the GNU Lesser General Public License along with this program. If |
| not, see <http://www.gnu.org/licenses/>. */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include <config.h> |
| #endif |
| |
| #include <libelfP.h> |
| |
| |
| /* Currently selected version. Should be EV_CURRENT. |
| Will be EV_NONE if elf_version () has not been called yet. */ |
| unsigned int __libelf_version = EV_NONE; |
| |
| unsigned int |
| elf_version (unsigned int version) |
| { |
| if (version == EV_NONE) |
| return EV_CURRENT; |
| |
| if (likely (version == EV_CURRENT)) |
| { |
| /* Phew, we know this version. */ |
| |
| /* Signal that the version is now initialized. */ |
| __libelf_version = EV_CURRENT; |
| |
| /* And return the last (or initial) version. */ |
| return EV_CURRENT; |
| } |
| |
| /* We cannot handle this version. */ |
| __libelf_seterrno (ELF_E_UNKNOWN_VERSION); |
| return EV_NONE; |
| } |
| INTDEF(elf_version) |