strerror.c revision 261363 
1/*
2 * Copyright (c) 2000-2001 Proofpoint, 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>
15SM_RCSID("@(#)$Id: strerror.c,v 1.24 2013/11/22 20:51:43 ca 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)
30extern char *sys_errlist[];
31extern 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
46char *
47strerror(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 */
61