17c478bdstevel@tonic-gate/*
27c478bdstevel@tonic-gate * CDDL HEADER START
37c478bdstevel@tonic-gate *
47c478bdstevel@tonic-gate * The contents of this file are subject to the terms of the
57257d1braf * Common Development and Distribution License (the "License").
67257d1braf * You may not use this file except in compliance with the License.
77c478bdstevel@tonic-gate *
87c478bdstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bdstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bdstevel@tonic-gate * See the License for the specific language governing permissions
117c478bdstevel@tonic-gate * and limitations under the License.
127c478bdstevel@tonic-gate *
137c478bdstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bdstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bdstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bdstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bdstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bdstevel@tonic-gate *
197c478bdstevel@tonic-gate * CDDL HEADER END
207c478bdstevel@tonic-gate */
217257d1braf
227c478bdstevel@tonic-gate/*
237257d1braf * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
247c478bdstevel@tonic-gate * Use is subject to license terms.
257c478bdstevel@tonic-gate */
267c478bdstevel@tonic-gate
277c478bdstevel@tonic-gate/*	Copyright (c) 1988 AT&T	*/
28cd62a92Robert Mustacchi/*	  All Rights Reserved	*/
297c478bdstevel@tonic-gate
307257d1braf#include "lint.h"
317c478bdstevel@tonic-gate#include "file64.h"
327c478bdstevel@tonic-gate#include "mtlib.h"
337c478bdstevel@tonic-gate#include <sys/types.h>
347c478bdstevel@tonic-gate#include <stdio.h>
357c478bdstevel@tonic-gate#include <unistd.h>
367c478bdstevel@tonic-gate#include <synch.h>
377c478bdstevel@tonic-gate#include <thread.h>
387c478bdstevel@tonic-gate#include "stdiom.h"
397c478bdstevel@tonic-gate#include "libc.h"
407c478bdstevel@tonic-gate
417c478bdstevel@tonic-gate
427c478bdstevel@tonic-gatevoid
437c478bdstevel@tonic-gaterewind(FILE *iop)
447c478bdstevel@tonic-gate{
457c478bdstevel@tonic-gate	rmutex_t *lk;
467c478bdstevel@tonic-gate
477c478bdstevel@tonic-gate	FLOCKFILE(lk, iop);
487c478bdstevel@tonic-gate	_rewind_unlocked(iop);
497c478bdstevel@tonic-gate	FUNLOCKFILE(lk);
507c478bdstevel@tonic-gate}
517c478bdstevel@tonic-gate
527c478bdstevel@tonic-gatevoid
537c478bdstevel@tonic-gate_rewind_unlocked(FILE *iop)
547c478bdstevel@tonic-gate{
557c478bdstevel@tonic-gate	(void) _fflush_u(iop);
56cd62a92Robert Mustacchi	(void) _xseek64(iop, 0, SEEK_SET);
577c478bdstevel@tonic-gate	iop->_cnt = 0;
587c478bdstevel@tonic-gate	iop->_ptr = iop->_base;
597c478bdstevel@tonic-gate	iop->_flag &= ~(_IOERR | _IOEOF);
607c478bdstevel@tonic-gate	if (iop->_flag & _IORW)
617c478bdstevel@tonic-gate		iop->_flag &= ~(_IOREAD | _IOWRT);
627c478bdstevel@tonic-gate}
63