contrib/sendmail/libsm/strerror.c

   1 /*
   2  * Copyright (c) 2000-2001 Sendmail, Inc. and its suppliers.
   3  *      All rights reserved.
   4  * Copyright (c) 1983, 1995-1997 Eric P. Allman.  All rights reserved.
   5  * Copyright (c) 1988, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * By using this file, you agree to the terms and conditions set
   9  * forth in the LICENSE file which can be found at the top level of
  10  * the sendmail distribution.
  11  *
  12  */
  13
  14 #include <sm/gen.h>
  15 SM_RCSID("@(#)$Id: strerror.c,v 1.23 2001/09/11 04:04:49 gshapiro Exp $")
  16
  17 /*
  18 **  define strerror for platforms that lack it.
  19 */
  20
  21 #include <errno.h>
  22 #include <stdio.h>      /* sys_errlist, on some platforms */
  23
  24 #include <sm/io.h>      /* sm_snprintf */
  25 #include <sm/string.h>
  26 #include <sm/conf.h>
  27 #include <sm/errstring.h>
  28
  29 #if !defined(ERRLIST_PREDEFINED)
  30 extern char *sys_errlist[];
  31 extern int sys_nerr;
  32 #endif /* !defined(ERRLIST_PREDEFINED) */
  33
  34 #if !HASSTRERROR
  35
  36 /*
  37 **  STRERROR -- return error message string corresponding to an error number.
  38 **
  39 **      Parameters:
  40 **              err -- error number.
  41 **
  42 **      Returns:
  43 **              Error string (might be pointer to static buffer).
  44 */
  45
  46 char *
  47 strerror(err)
  48         int err;
  49 {
  50         static char buf[64];
  51
  52         if (err >= 0 && err < sys_nerr)
  53                 return (char *) sys_errlist[err];
  54         else
  55         {
  56                 (void) sm_snprintf(buf, sizeof(buf), "Error %d", err);
  57                 return buf;
  58         }
  59 }
  60 #endif /* !HASSTRERROR */