libguile/strerror.c

   1 /* Turning errno values into English error messages.
   2    Copyright (C) 1985, 86, 87, 88, 93, 94, 95 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs 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 2, or (at your option)
   9 any later version.
  10
  11 GNU Emacs 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 GNU Emacs; see the file COPYING.  If not, write to
  18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21
  22 char *
  23 strerror (errnum)
  24      int errnum;
  25 {
  26   extern char *sys_errlist[];
  27   extern int sys_nerr;
  28
  29   if (errnum >= 0 && errnum < sys_nerr)
  30     return sys_errlist[errnum];
  31   return (char *) "Unknown error";
  32 }