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      1 /*	$NetBSD: vsprintf.c,v 1.19 2013/05/17 12:55:57 joerg Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Chris Torek.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 #if defined(LIBC_SCCS) && !defined(lint)
     37 #if 0
     38 static char sccsid[] = "@(#)vsprintf.c	8.1 (Berkeley) 6/4/93";
     39 #else
     40 __RCSID("$NetBSD: vsprintf.c,v 1.19 2013/05/17 12:55:57 joerg Exp $");
     41 #endif
     42 #endif /* LIBC_SCCS and not lint */
     43 
     44 #include "namespace.h"
     45 #include <assert.h>
     46 #include <errno.h>
     47 #include <limits.h>
     48 #include <locale.h>
     49 #include <stdio.h>
     50 
     51 #include "reentrant.h"
     52 #include "setlocale_local.h"
     53 #include "local.h"
     54 
     55 #ifdef _FORTIFY_SOURCE
     56 #undef vsprintf
     57 #undef sprintf
     58 #endif
     59 
     60 __weak_alias(sprintf_l, _sprintf_l)
     61 __weak_alias(vsprintf_l, _vsprintf_l)
     62 
     63 int
     64 vsprintf_l(char *str, locale_t loc, const char *fmt, va_list ap)
     65 {
     66 	int ret;
     67 	FILE f;
     68 	struct __sfileext fext;
     69 
     70 	_DIAGASSERT(str != NULL);
     71 	_DIAGASSERT(fmt != NULL);
     72 
     73 	_FILEEXT_SETUP(&f, &fext);
     74 	f._file = -1;
     75 	f._flags = __SWR | __SSTR;
     76 	f._bf._base = f._p = (unsigned char *)str;
     77 	f._bf._size = f._w = INT_MAX;
     78 	ret = __vfprintf_unlocked_l(&f, loc, fmt, ap);
     79 	*f._p = 0;
     80 	return ret;
     81 }
     82 
     83 int
     84 vsprintf(char *str, const char *fmt, va_list ap)
     85 {
     86 	return vsprintf_l(str, _current_locale(), fmt, ap);
     87 }
     88 
     89 int
     90 sprintf_l(char *str, locale_t loc, char const *fmt, ...)
     91 {
     92 	int ret;
     93 	va_list ap;
     94 
     95 	va_start(ap, fmt);
     96 	ret = vsprintf_l(str, loc, fmt, ap);
     97 	va_end(ap);
     98 
     99 	return ret;
    100 }
    101 
    102 int
    103 sprintf(char *str, char const *fmt, ...)
    104 {
    105 	int ret;
    106 	va_list ap;
    107 
    108 	va_start(ap, fmt);
    109 	ret = vsprintf(str, fmt, ap);
    110 	va_end(ap);
    111 
    112 	return ret;
    113 }
    114