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1 /*	$OpenBSD: sprintf.c,v 1.13 2005/10/10 12:00:52 espie Exp $ */
2 /*-
3  * Copyright (c) 1990, 1993
4  *	The Regents of the University of California.  All rights reserved.
5  *
6  * This code is derived from software contributed to Berkeley by
7  * Chris Torek.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. Neither the name of the University nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #include <stdio.h>
35 #include <string.h>
36 #include <stdarg.h>
37 #include <limits.h>
38 #include "local.h"
39 
40 #if defined(APIWARN)
41 __warn_references(sprintf,
42     "warning: sprintf() is often misused, please use snprintf()");
43 #endif
44 
45 int
sprintf(char * str,const char * fmt,...)46 sprintf(char *str, const char *fmt, ...)
47 {
48 	int ret;
49 	va_list ap;
50 	FILE f;
51 	struct __sfileext fext;
52 
53 	_FILEEXT_SETUP(&f, &fext);
54 	f._file = -1;
55 	f._flags = __SWR | __SSTR;
56 	f._bf._base = f._p = (unsigned char *)str;
57 	f._bf._size = f._w = INT_MAX;
58 	va_start(ap, fmt);
59 	ret = __vfprintf(&f, fmt, ap);
60 	va_end(ap);
61 	*f._p = '\0';
62 	return (ret);
63 }
64