Line data    Source code

       1             : /* Coordinate ELF library and application versions.
       2             :    Copyright (C) 1998, 1999, 2000, 2002, 2015 Red Hat, Inc.
       3             :    This file is part of elfutils.
       4             :    Contributed by Ulrich Drepper <drepper@redhat.com>, 1998.
       5             : 
       6             :    This file is free software; you can redistribute it and/or modify
       7             :    it under the terms of either
       8             : 
       9             :      * the GNU Lesser General Public License as published by the Free
      10             :        Software Foundation; either version 3 of the License, or (at
      11             :        your option) any later version
      12             : 
      13             :    or
      14             : 
      15             :      * the GNU General Public License as published by the Free
      16             :        Software Foundation; either version 2 of the License, or (at
      17             :        your option) any later version
      18             : 
      19             :    or both in parallel, as here.
      20             : 
      21             :    elfutils is distributed in the hope that it will be useful, but
      22             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      23             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      24             :    General Public License for more details.
      25             : 
      26             :    You should have received copies of the GNU General Public License and
      27             :    the GNU Lesser General Public License along with this program.  If
      28             :    not, see <http://www.gnu.org/licenses/>.  */
      29             : 
      30             : #ifdef HAVE_CONFIG_H
      31             : # include <config.h>
      32             : #endif
      33             : 
      34             : #include <libelfP.h>
      35             : 
      36             : 
      37             : /* Currently selected version.  Should be EV_CURRENT.
      38             :    Will be EV_NONE if elf_version () has not been called yet.  */
      39             : unsigned int __libelf_version = EV_NONE;
      40             : 
      41             : unsigned int
      42        7610 : elf_version (unsigned int version)
      43             : {
      44        7610 :   if (version == EV_NONE)
      45             :     return EV_CURRENT;
      46             : 
      47        7610 :   if (likely (version == EV_CURRENT))
      48             :     {
      49             :       /* Phew, we know this version.  */
      50             : 
      51             :       /* Signal that the version is now initialized.  */
      52        7610 :       __libelf_version = EV_CURRENT;
      53             : 
      54             :       /* And return the last (or initial) version.  */
      55        7610 :       return EV_CURRENT;
      56             :     }
      57             : 
      58             :   /* We cannot handle this version.  */
      59           0 :   __libelf_seterrno (ELF_E_UNKNOWN_VERSION);
      60           0 :   return EV_NONE;
      61             : }
      62             : INTDEF(elf_version)