xref: /dragonfly/lib/libc/stdio/getchar.c (revision dc71b7ab)
1 /*-
2  * Copyright (c) 1990, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * This code is derived from software contributed to Berkeley by
6  * Chris Torek.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. Neither the name of the University nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  * @(#)getchar.c	8.1 (Berkeley) 6/4/93
33  * $FreeBSD: src/lib/libc/stdio/getchar.c,v 1.15 2008/05/05 16:03:52 jhb Exp $
34  * $DragonFly: src/lib/libc/stdio/getchar.c,v 1.5 2005/08/27 21:35:01 joerg Exp $
35  */
36 
37 /*
38  * A subroutine version of the macro getchar.
39  */
40 #include "namespace.h"
41 #include <stdio.h>
42 #include "un-namespace.h"
43 #include "local.h"
44 #include "libc_private.h"
45 
46 #undef getchar
47 #undef getchar_unlocked
48 
49 int
getchar(void)50 getchar(void)
51 {
52 	int retval;
53 	FLOCKFILE(stdin);
54 	retval = __sgetc(stdin);
55 	FUNLOCKFILE(stdin);
56 	return (retval);
57 }
58 
59 int
getchar_unlocked(void)60 getchar_unlocked(void)
61 {
62 	return (__sgetc(stdin));
63 }
64