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 /*LINTLIBRARY*/
31
32 #include <sys/types.h>
33 #include "file64.h"
34 #include <stdio.h>
35 #include <stdarg.h>
36 #include "libc.h"
37
38 int
printf(const char * format,...)39 printf(const char *format, ...)
40 {
41 int count;
42 va_list ap;
43
44 va_start(ap, format);
45 if (!(stdout->_flag & _IOWRT)) {
46 /* if no write flag */
47 if (stdout->_flag & _IORW) {
48 /* if ok, cause read-write */
49 stdout->_flag |= _IOWRT;
50 } else {
51 /* else error */
52 return (EOF);
53 }
54 }
55 count = _doprnt((char *) format, ap, stdout);
56 va_end(ap);
57 return (count);
58 }
59