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 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	  All Rights Reserved  	*/
29 
30 /*
31  * University Copyright- Copyright (c) 1982, 1986, 1988
32  * The Regents of the University of California
33  * All Rights Reserved
34  *
35  * University Acknowledgment- Portions of this document are derived from
36  * software developed by the University of California, Berkeley, and its
37  * contributors.
38  */
39 
40 #pragma ident	"%Z%%M%	%I%	%E% SMI"
41 
42 /*LINTLIBRARY*/
43 
44 #include <sys/types.h>
45 #include "file64.h"
46 #include <stdio.h>
47 #include <stdarg.h>
48 #include "libc.h"
49 
50 int
fprintf(FILE * iop,const char * format,...)51 fprintf(FILE *iop, const char *format, ...)
52 {
53 	int count;
54 	va_list ap;
55 
56 	va_start(ap, format);
57 
58 	if (!(iop->_flag & _IOWRT)) {
59 		/* if no write flag */
60 		if (iop->_flag & _IORW) {
61 			/* if ok, cause read-write */
62 			iop->_flag |= _IOWRT;
63 		} else {
64 			/* else error */
65 			return (EOF);
66 		}
67 	}
68 	count = _doprnt((char *) format, ap, iop);
69 	va_end(ap);
70 	return (count);
71 }
72