11.13Syamt/* $NetBSD: rewinddir.c,v 1.13 2010/09/26 02:26:59 yamt Exp $ */ 21.4Scgd 31.1Scgd/*- 41.2Sjtc * Copyright (c) 1990, 1993 51.2Sjtc * The Regents of the University of California. All rights reserved. 61.1Scgd * 71.1Scgd * Redistribution and use in source and binary forms, with or without 81.1Scgd * modification, are permitted provided that the following conditions 91.1Scgd * are met: 101.1Scgd * 1. Redistributions of source code must retain the above copyright 111.1Scgd * notice, this list of conditions and the following disclaimer. 121.1Scgd * 2. Redistributions in binary form must reproduce the above copyright 131.1Scgd * notice, this list of conditions and the following disclaimer in the 141.1Scgd * documentation and/or other materials provided with the distribution. 151.10Sagc * 3. Neither the name of the University nor the names of its contributors 161.1Scgd * may be used to endorse or promote products derived from this software 171.1Scgd * without specific prior written permission. 181.1Scgd * 191.1Scgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 201.1Scgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 211.1Scgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 221.1Scgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 231.1Scgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 241.1Scgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 251.1Scgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 261.1Scgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 271.1Scgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 281.1Scgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 291.1Scgd * SUCH DAMAGE. 301.1Scgd */ 311.1Scgd 321.5Schristos#include <sys/cdefs.h> 331.1Scgd#if defined(LIBC_SCCS) && !defined(lint) 341.4Scgd#if 0 351.4Scgdstatic char sccsid[] = "@(#)rewinddir.c 8.1 (Berkeley) 6/8/93"; 361.4Scgd#else 371.13Syamt__RCSID("$NetBSD: rewinddir.c,v 1.13 2010/09/26 02:26:59 yamt Exp $"); 381.4Scgd#endif 391.1Scgd#endif /* LIBC_SCCS and not lint */ 401.1Scgd 411.6Sjtc#include "namespace.h" 421.11Schristos#include "reentrant.h" 431.11Schristos#include "extern.h" 441.1Scgd#include <sys/types.h> 451.7Slukem 461.13Syamt#include <unistd.h> 471.1Scgd#include <dirent.h> 481.6Sjtc 491.12Schristos#include "dirent_private.h" 501.12Schristos 511.6Sjtc#ifdef __weak_alias 521.9Smycroft__weak_alias(rewinddir,_rewinddir) 531.6Sjtc#endif 541.1Scgd 551.1Scgdvoid 561.12Schristosrewinddir(DIR *dirp) 571.1Scgd{ 581.13Syamt int fd; 591.7Slukem 601.11Schristos#ifdef _REENTRANT 611.11Schristos if (__isthreaded) { 621.11Schristos mutex_lock((mutex_t *)dirp->dd_lock); 631.13Syamt } 641.13Syamt#endif 651.13Syamt fd = dirp->dd_fd; 661.13Syamt _finidir(dirp); 671.13Syamt dirp->dd_seek = lseek(fd, (off_t)0, SEEK_SET); 681.13Syamt _initdir(dirp, fd, NULL); 691.13Syamt#ifdef _REENTRANT 701.13Syamt if (__isthreaded) { 711.11Schristos mutex_unlock((mutex_t *)dirp->dd_lock); 721.11Schristos } 731.11Schristos#endif 741.1Scgd} 75