17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7257d1b4Sraf * Common Development and Distribution License (the "License"). 6*7257d1b4Sraf * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 21*7257d1b4Sraf 227c478bd9Sstevel@tonic-gate /* 23*7257d1b4Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 287c478bd9Sstevel@tonic-gate /* All Rights Reserved */ 297c478bd9Sstevel@tonic-gate 30*7257d1b4Sraf #pragma ident "%Z%%M% %I% %E% SMI" 317c478bd9Sstevel@tonic-gate 32*7257d1b4Sraf #include "lint.h" 337c478bd9Sstevel@tonic-gate #include "file64.h" 347c478bd9Sstevel@tonic-gate #include <stdio.h> 357c478bd9Sstevel@tonic-gate #include <errno.h> 367c478bd9Sstevel@tonic-gate #include <sys/types.h> 377c478bd9Sstevel@tonic-gate #include "stdiom.h" 387c478bd9Sstevel@tonic-gate 397c478bd9Sstevel@tonic-gate #undef _wrtchk 407c478bd9Sstevel@tonic-gate 417c478bd9Sstevel@tonic-gate /* check permissions, correct for read & write changes */ 427c478bd9Sstevel@tonic-gate int 437c478bd9Sstevel@tonic-gate _wrtchk(FILE *iop) 447c478bd9Sstevel@tonic-gate { 457c478bd9Sstevel@tonic-gate if ((iop->_flag & (_IOWRT | _IOEOF)) != _IOWRT) { 467c478bd9Sstevel@tonic-gate if (!(iop->_flag & (_IOWRT | _IORW))) { 477c478bd9Sstevel@tonic-gate iop->_flag |= _IOERR; 487c478bd9Sstevel@tonic-gate errno = EBADF; 497c478bd9Sstevel@tonic-gate return (EOF); /* stream is not writeable */ 507c478bd9Sstevel@tonic-gate } 517c478bd9Sstevel@tonic-gate iop->_flag = (iop->_flag & ~_IOEOF) | _IOWRT; 527c478bd9Sstevel@tonic-gate } 537c478bd9Sstevel@tonic-gate 547c478bd9Sstevel@tonic-gate /* if first I/O to the stream get a buffer */ 557c478bd9Sstevel@tonic-gate if (iop->_base == NULL && _findbuf(iop) == NULL) 567c478bd9Sstevel@tonic-gate return (EOF); 577c478bd9Sstevel@tonic-gate else if ((iop->_ptr == iop->_base) && 587c478bd9Sstevel@tonic-gate !(iop->_flag & (_IOLBF | _IONBF))) { 597c478bd9Sstevel@tonic-gate iop->_cnt = _bufend(iop) - iop->_ptr; 607c478bd9Sstevel@tonic-gate } 617c478bd9Sstevel@tonic-gate return (0); 627c478bd9Sstevel@tonic-gate } 63