extra/inetutils/libinetutils/strerror.c

   1 /* A replacement version of strerror
   2
   3    Copyright (C) 1996 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU General Public License as
   7    published by the Free Software Foundation; either version 2, or (at
   8    your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful, but
  11    WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    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, write to the Free Software
  17    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include <config.h>
  21 #endif
  22
  23 #include <stdio.h>
  24 #ifdef HAVE_ERRNO_H
  25 #include <errno.h>
  26 #endif
  27
  28 #if defined (HAVE_SYS_ERRLIST) && !defined (HAVE_SYS_ERRLIST_DECL)
  29 extern int sys_nerr;
  30 extern char *sys_errlist[];
  31 #endif
  32
  33 /* Return a string describing the system error code ERR.  The returned value
  34    may be in a static buffer (and in any case shouldn't be written to).  */
  35 const char *
  36 strerror (int err)
  37 {
  38 #ifdef HAVE_SYS_ERRLIST
  39   if (err >= 0 && err < sys_nerr && sys_errlist[err])
  40     return sys_errlist[err];
  41   else
  42 #endif
  43     {
  44       static char buf[100];
  45       sprintf (buf, "Error %d", err);
  46       return buf;
  47     }
  48 }