compiler/clib/strerror.c

   1 /*
   2     Copyright © 1995-2012, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     C99 function strerror().
   6 */
   7
   8 #include "__arosc_privdata.h"
   9
  10 #include <proto/dos.h>
  11 #include <clib/macros.h>
  12 #include <errno.h>
  13 #include <stdio.h>
  14
  15 extern const char * _errstrings[];
  16
  17 /*****************************************************************************
  18
  19     NAME */
  20 #include <string.h>
  21
  22         char * strerror (
  23
  24 /*  SYNOPSIS */
  25         int n)
  26
  27 /*  FUNCTION
  28         Returns a readable string for an error number in errno.
  29
  30     INPUTS
  31         n - The contents of errno or a #define from errno.h
  32
  33     RESULT
  34         A string describing the error.
  35
  36     NOTES
  37
  38     EXAMPLE
  39
  40     BUGS
  41
  42     SEE ALSO
  43
  44     INTERNALS
  45
  46 ******************************************************************************/
  47 {
  48     if (n > MAX_ERRNO)
  49     {
  50         struct aroscbase *aroscbase = __aros_getbase_aroscbase();
  51
  52         Fault(n - MAX_ERRNO, NULL, aroscbase->acb_fault_buf, sizeof(aroscbase->acb_fault_buf));
  53
  54         return aroscbase->acb_fault_buf;
  55     }
  56     else
  57     {
  58         char *s;
  59
  60         s = (char *)_errstrings[MIN(n, ELAST+1)];
  61
  62         if (s == NULL)
  63             s = (char *)"Errno out of range";
  64
  65         return s;
  66     }
  67 } /* strerror */
  68