lib/get-errno.c

   1 /* get-errno.c - get and set errno.
   2
   3    Copyright (C) 2002, 2006 Free Software Foundation, Inc.
   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; either version 2, or (at your option)
   8    any later version.
   9
  10    This program 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
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software Foundation,
  17    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  18
  19 /* Written by Paul Eggert.  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 # include <config.h>
  23 #endif
  24
  25 #include <errno.h>
  26
  27 #include "get-errno.h"
  28
  29 /* Get and set errno.  A source file that needs to set or get errno,
  30    but doesn't need to test for specific errno values, can use these
  31    functions to avoid namespace pollution.  For example, a file that
  32    defines EQUAL should not include <errno.h>, since <errno.h> might
  33    define EQUAL; such a file can include <get-errno.h> instead.  */
  34
  35 int
  36 get_errno (void)
  37 {
  38   return errno;
  39 }
  40
  41 void
  42 set_errno (int e)
  43 {
  44   errno = e;
  45 }