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 /* Copyright (c) 1984 AT&T */ 23 /* All Rights Reserved */ 24 25 #pragma ident "%Z%%M% %I% %E% SMI" /* from S5R2 1.1 */ 26 27 /*LINTLIBRARY*/ 28 #include <stdio.h> 29 #include <varargs.h> 30 31 extern int _doprnt(); 32 33 /*VARARGS1*/ 34 int 35 vprintf(format, ap) 36 char *format; 37 va_list ap; 38 { 39 if (!(stdout->_flag & _IOWRT)) { 40 /* if no write flag */ 41 if (stdout->_flag & _IORW) { 42 /* if ok, cause read-write */ 43 stdout->_flag |= _IOWRT; 44 } else { 45 /* else error */ 46 return EOF; 47 } 48 } 49 return(_doprnt(format, ap, stdout)); 50 } 51