kernel/core/errno.c

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   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 3 of the License, or
   8  *  (at your option) 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, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19
  20 #include <system.h>
  21 #include <errno.h>
  22
  23 static int *errno;      /* shared errno variable */
  24
  25 void errno_set (int error)
  26 {
  27         *errno = error;
  28 }
  29
  30 int errno_get ()
  31 {
  32         return *errno;
  33 }
  34
  35 unsigned int init_errno ()
  36 {
  37         errno = (int *) ERRNO_ADDRESS;
  38
  39         return 1;
  40 }