src/libc/include/errno.h

   1 /*
   2  * <errno.h>
   3  *
   4  * Open Hack'Ware BIOS errno management
   5  *
   6  * Copyright (c) 2004-2005 Jocelyn Mayer
   7  *
   8  *   This program is free software; you can redistribute it and/or
   9  *   modify it under the terms of the GNU General Public License V2
  10  *   as published by the Free Software Foundation
  11  *
  12  *   This program is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with this program; if not, write to the Free Software
  19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21 #if !defined (__OHW_ERRNO_H__)
  22 #define __OHW_ERRNO_H__
  23
  24 struct task {
  25     int errno;
  26 };
  27
  28 extern struct task cur_task;
  29
  30 void *get_current_stack (void);
  31
  32 static inline int *errno_location (void)
  33 {
  34     /* XXX: to fix */
  35 #if 0
  36     struct task *taskp;
  37
  38     taskp = get_current_stack();
  39
  40     return &taskp->errno;
  41 #else
  42     return &cur_task.errno;
  43 #endif
  44 }
  45
  46 static inline void set_errno (int errnum)
  47 {
  48     *(errno_location()) = errnum;
  49 }
  50
  51 static inline int get_errno (void)
  52 {
  53     return *(errno_location());
  54 }
  55
  56 #define errno get_errno()
  57
  58 enum {
  59     ENOMEM,
  60 };
  61
  62 #endif /* !defined (__OHW_ERRNO_H__) */