xref: /titanic_41/usr/src/lib/libc/port/stdio/putw.c (revision 6f45ec7b0b964c3be967c4880e8867ac1e7763a5)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 /*	Copyright (c) 1988 AT&T	*/
30 /*	  All Rights Reserved  	*/
31 
32 
33 /*
34  * The intent here is to provide a means to make the order of
35  * bytes in an io-stream correspond to the order of the bytes
36  * in the memory while doing the io a `word' at a time.
37  */
38 
39 #pragma weak putw = _putw
40 
41 #include "synonyms.h"
42 #include "file64.h"
43 #include "mtlib.h"
44 #include <stdio.h>
45 #include <thread.h>
46 #include <synch.h>
47 #include "stdiom.h"
48 
49 int
50 putw(int w, FILE *stream)
51 {
52 	char *s = (char *)&w;
53 	int i = sizeof (int);
54 	int ret;
55 	rmutex_t *lk;
56 
57 	FLOCKFILE(lk, stream);
58 	while (--i >= 0 && PUTC(*s++, stream) != EOF)
59 		;
60 	ret = stream->_flag & _IOERR;
61 	FUNLOCKFILE(lk);
62 	return (ret);
63 }
64