xref: /titanic_41/usr/src/lib/libc/port/stdio/putw.c (revision 0bb073995ac5a95bd35f2dd790df1ea3d8c2d507)
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 (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1988 AT&T	*/
28 /*	  All Rights Reserved  	*/
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 /*
33  * The intent here is to provide a means to make the order of
34  * bytes in an io-stream correspond to the order of the bytes
35  * in the memory while doing the io a `word' at a time.
36  */
37 
38 #pragma weak _putw = putw
39 
40 #include "lint.h"
41 #include "file64.h"
42 #include "mtlib.h"
43 #include <stdio.h>
44 #include <thread.h>
45 #include <synch.h>
46 #include "stdiom.h"
47 
48 int
49 putw(int w, FILE *stream)
50 {
51 	char *s = (char *)&w;
52 	int i = sizeof (int);
53 	int ret;
54 	rmutex_t *lk;
55 
56 	FLOCKFILE(lk, stream);
57 	while (--i >= 0 && PUTC(*s++, stream) != EOF)
58 		;
59 	ret = stream->_flag & _IOERR;
60 	FUNLOCKFILE(lk);
61 	return (ret);
62 }
63