xref: /illumos-gate/usr/src/cmd/sendmail/libsm/strerror.c (revision 2a8bcb4efb45d99ac41c94a75c396b362c414f7f)
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 1.21 2001/06/17 21:31:41 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)
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 *
strerror(err)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 */
61