61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
|
/* $NetBSD: vsprintf_chk.c,v 1.6 2009/02/05 05:39:38 lukem Exp $ */
|
||
|
|
|
||
|
|
/*-
|
||
|
|
* Copyright (c) 2006 The NetBSD Foundation, Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
||
|
|
* by Christos Zoulas.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
||
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
#include <sys/cdefs.h>
|
||
|
|
__RCSID("$NetBSD: vsprintf_chk.c,v 1.6 2009/02/05 05:39:38 lukem Exp $");
|
||
|
|
|
||
|
|
/*LINTLIBRARY*/
|
||
|
|
|
||
|
|
#include <ssp/ssp.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <limits.h>
|
||
|
|
#include <stdarg.h>
|
||
|
|
#include <ssp/stdio.h>
|
||
|
|
|
||
|
|
#undef vsprintf
|
||
|
|
#undef vsnprintf
|
||
|
|
|
||
|
|
/*ARGSUSED*/
|
||
|
|
int
|
||
|
|
__vsprintf_chk(char * __restrict buf, int flags, size_t slen,
|
||
|
|
const char * __restrict fmt, va_list ap)
|
||
|
|
{
|
||
|
|
int rv;
|
||
|
|
|
||
|
|
if (slen > (size_t)INT_MAX)
|
||
|
|
rv = vsprintf(buf, fmt, ap);
|
||
|
|
else {
|
||
|
|
if ((rv = vsnprintf(buf, slen, fmt, ap)) >= 0 && (size_t)rv >= slen)
|
||
|
|
__chk_fail();
|
||
|
|
}
|
||
|
|
|
||
|
|
return rv;
|
||
|
|
}
|