library/errno.c

   1 /*
   2  * Wine library reentrant errno support
   3  *
   4  * Copyright 1998 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library 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 GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 /* Get pointers to the static errno and h_errno variables used by Xlib. This
  22    must be done before including <errno.h> makes the variables invisible.  */
  23 static int *default_errno_location(void)
  24 {
  25     extern int errno;
  26     return &errno;
  27 }
  28
  29 static int *default_h_errno_location(void)
  30 {
  31     extern int h_errno;
  32     return &h_errno;
  33 }
  34
  35 int* (*wine_errno_location)(void) = default_errno_location;
  36 int* (*wine_h_errno_location)(void) = default_h_errno_location;
  37
  38 #include "config.h"
  39
  40 /***********************************************************************
  41  *           __errno_location/__error/___errno
  42  *
  43  * Get the per-thread errno location.
  44  */
  45 #ifdef ERRNO_LOCATION
  46 int *ERRNO_LOCATION(void)
  47 {
  48     return wine_errno_location();
  49 }
  50 #endif /* ERRNO_LOCATION */
  51
  52 /***********************************************************************
  53  *           __h_errno_location
  54  *
  55  * Get the per-thread h_errno location.
  56  */
  57 int *__h_errno_location(void)
  58 {
  59     return wine_h_errno_location();
  60 }