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 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 #include "synonyms.h" 34 #include "file64.h" 35 #include "mtlib.h" 36 #include <sys/types.h> 37 #include <stdio.h> 38 #include <unistd.h> 39 #include <synch.h> 40 #include <thread.h> 41 #include "stdiom.h" 42 #include "libc.h" 43 44 45 void 46 rewind(FILE *iop) 47 { 48 rmutex_t *lk; 49 50 FLOCKFILE(lk, iop); 51 _rewind_unlocked(iop); 52 FUNLOCKFILE(lk); 53 } 54 55 void 56 _rewind_unlocked(FILE *iop) 57 { 58 (void) _fflush_u(iop); 59 (void) lseek64(FILENO(iop), 0, SEEK_SET); 60 iop->_cnt = 0; 61 iop->_ptr = iop->_base; 62 iop->_flag &= ~(_IOERR | _IOEOF); 63 if (iop->_flag & _IORW) 64 iop->_flag &= ~(_IOREAD | _IOWRT); 65 } 66