lib/get-errno.c

   1 /* get-errno.c - get and set errno.
   2
   3    Copyright (C) 2002, 2006, 2009-2015, 2018-2021 Free Software
   4    Foundation, Inc.
   5
   6    This program is free software: you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation, either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  18
  19 /* Written by Paul Eggert.  */
  20
  21 #include <config.h>
  22
  23 #include "get-errno.h"
  24
  25 #include <errno.h>
  26
  27 /* Get and set errno.  A source file that needs to set or get errno,
  28    but doesn't need to test for specific errno values, can use these
  29    functions to avoid namespace pollution.  For example, a file that
  30    defines EQUAL should not include <errno.h>, since <errno.h> might
  31    define EQUAL; such a file can include <get-errno.h> instead.  */
  32
  33 int
  34 get_errno (void)
  35 {
  36   return errno;
  37 }
  38
  39 void
  40 set_errno (int e)
  41 {
  42   errno = e;
  43 }