1  /* errno.c provide access to errno.
       2  
       3  Copyright (C) 2009-2023 Free Software Foundation, Inc.
       4  Contributed by Gaius Mulley <gaius@glam.ac.uk>.
       5  
       6  This file is part of GNU Modula-2.
       7  
       8  GNU Modula-2 is free software; you can redistribute it and/or modify
       9  it under the terms of the GNU General Public License as published by
      10  the Free Software Foundation; either version 3, or (at your option)
      11  any later version.
      12  
      13  GNU Modula-2 is distributed in the hope that it will be useful, but
      14  WITHOUT ANY WARRANTY; without even the implied warranty of
      15  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      16  General Public License for more details.
      17  
      18  Under Section 7 of GPL version 3, you are granted additional
      19  permissions described in the GCC Runtime Library Exception, version
      20  3.1, as published by the Free Software Foundation.
      21  
      22  You should have received a copy of the GNU General Public License and
      23  a copy of the GCC Runtime Library Exception along with this program;
      24  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      25  <http://www.gnu.org/licenses/>.  */
      26  
      27  #include "config.h"
      28  #include "system.h"
      29  #include "ansidecl.h"
      30  
      31  #include "gm2-libs-host.h"
      32  
      33  #   ifdef __cplusplus
      34  extern "C" {
      35  #   endif
      36  
      37  int
      38  errno_geterrno (void)
      39  {
      40  #if defined(HAVE_ERRNO_H) || defined(HAVE_SYS_ERRNO_H)
      41    return errno;
      42  #else
      43    return -1;
      44  #endif
      45  }
      46  
      47  void
      48  _M2_errno_init (void)
      49  {
      50  }
      51  
      52  void
      53  _M2_errno_finish (void)
      54  {
      55  }
      56  
      57  #   ifdef __cplusplus
      58  }
      59  #   endif