xref: /freebsd/lib/libc/stdio/fscanf.c (revision 6137b5f7b8c183ee8806d79b3f1d8e5e3ddb3df3)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
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  * Copyright (c) 2011 The FreeBSD Foundation
11  *
12  * Portions of this software were developed by David Chisnall
13  * under sponsorship from the FreeBSD Foundation.
14  *
15  * Redistribution and use in source and binary forms, with or without
16  * modification, are permitted provided that the following conditions
17  * are met:
18  * 1. Redistributions of source code must retain the above copyright
19  *    notice, this list of conditions and the following disclaimer.
20  * 2. Redistributions in binary form must reproduce the above copyright
21  *    notice, this list of conditions and the following disclaimer in the
22  *    documentation and/or other materials provided with the distribution.
23  * 3. Neither the name of the University nor the names of its contributors
24  *    may be used to endorse or promote products derived from this software
25  *    without specific prior written permission.
26  *
27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37  * SUCH DAMAGE.
38  */
39 
40 #include "namespace.h"
41 #include <stdio.h>
42 #include <stdarg.h>
43 #include "un-namespace.h"
44 #include "libc_private.h"
45 #include "local.h"
46 #include "xlocale_private.h"
47 
48 int
49 fscanf(FILE * __restrict fp, char const * __restrict fmt, ...)
50 {
51 	int ret;
52 	va_list ap;
53 
54 	va_start(ap, fmt);
55 	FLOCKFILE_CANCELSAFE(fp);
56 	ret = __svfscanf(fp, __get_locale(), fmt, ap);
57 	va_end(ap);
58 	FUNLOCKFILE_CANCELSAFE();
59 	return (ret);
60 }
61 int
62 fscanf_l(FILE * __restrict fp, locale_t locale, char const * __restrict fmt, ...)
63 {
64 	int ret;
65 	va_list ap;
66 	FIX_LOCALE(locale);
67 
68 	va_start(ap, fmt);
69 	FLOCKFILE_CANCELSAFE(fp);
70 	ret = __svfscanf(fp, locale, fmt, ap);
71 	va_end(ap);
72 	FUNLOCKFILE_CANCELSAFE();
73 	return (ret);
74 }
75