closedir.c revision 1.12 
11.12Schristos/*	$NetBSD: closedir.c,v 1.12 2003/06/23 14:35:38 christos Exp $	*/
21.3Scgd
31.1Scgd/*
41.2Sjtc * Copyright (c) 1983, 1993
51.2Sjtc *	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.
151.1Scgd * 3. All advertising materials mentioning features or use of this software
161.1Scgd *    must display the following acknowledgement:
171.1Scgd *	This product includes software developed by the University of
181.1Scgd *	California, Berkeley and its contributors.
191.1Scgd * 4. Neither the name of the University nor the names of its contributors
201.1Scgd *    may be used to endorse or promote products derived from this software
211.1Scgd *    without specific prior written permission.
221.1Scgd *
231.1Scgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
241.1Scgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
251.1Scgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
261.1Scgd * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
271.1Scgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
281.1Scgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
291.1Scgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
301.1Scgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
311.1Scgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
321.1Scgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
331.1Scgd * SUCH DAMAGE.
341.1Scgd */
351.1Scgd
361.5Schristos#include <sys/cdefs.h>
371.1Scgd#if defined(LIBC_SCCS) && !defined(lint)
381.3Scgd#if 0
391.3Scgdstatic char sccsid[] = "@(#)closedir.c	8.1 (Berkeley) 6/10/93";
401.3Scgd#else
411.12Schristos__RCSID("$NetBSD: closedir.c,v 1.12 2003/06/23 14:35:38 christos Exp $");
421.3Scgd#endif
431.1Scgd#endif /* LIBC_SCCS and not lint */
441.1Scgd
451.6Sjtc#include "namespace.h"
461.11Schristos#include "reentrant.h"
471.1Scgd#include <sys/types.h>
481.8Slukem
491.8Slukem#include <assert.h>
501.1Scgd#include <dirent.h>
511.8Slukem#include <errno.h>
521.1Scgd#include <stdlib.h>
531.1Scgd#include <unistd.h>
541.6Sjtc
551.6Sjtc#ifdef __weak_alias
561.10Smycroft__weak_alias(closedir,_closedir)
571.6Sjtc#endif
581.1Scgd
591.1Scgd/*
601.1Scgd * close a directory.
611.1Scgd */
621.1Scgdint
631.1Scgdclosedir(dirp)
641.7Sperry	DIR *dirp;
651.1Scgd{
661.1Scgd	int fd;
671.8Slukem
681.8Slukem	_DIAGASSERT(dirp != NULL);
691.1Scgd
701.11Schristos#ifdef _REENTRANT
711.11Schristos	if (__isthreaded)
721.11Schristos		mutex_lock((mutex_t *)dirp->dd_lock);
731.11Schristos#endif
741.11Schristos	__seekdir(dirp, dirp->dd_rewind);	/* free seekdir storage */
751.1Scgd	fd = dirp->dd_fd;
761.1Scgd	dirp->dd_fd = -1;
771.1Scgd	dirp->dd_loc = 0;
781.4Sjtc	free((void *)dirp->dd_buf);
791.11Schristos#ifdef _REENTRANT
801.11Schristos	if (__isthreaded) {
811.11Schristos		mutex_unlock((mutex_t *)dirp->dd_lock);
821.11Schristos		mutex_destroy((mutex_t *)dirp->dd_lock);
831.11Schristos		free(dirp->dd_lock);
841.11Schristos	}
851.11Schristos#endif
861.12Schristos	free((void *)dirp);
871.1Scgd	return(close(fd));
881.1Scgd}
89