closedir.c revision 1.13 
11.13Sagc/*	$NetBSD: closedir.c,v 1.13 2003/08/07 16:42:46 agc 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.
151.13Sagc * 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)
341.3Scgd#if 0
351.3Scgdstatic char sccsid[] = "@(#)closedir.c	8.1 (Berkeley) 6/10/93";
361.3Scgd#else
371.13Sagc__RCSID("$NetBSD: closedir.c,v 1.13 2003/08/07 16:42:46 agc Exp $");
381.3Scgd#endif
391.1Scgd#endif /* LIBC_SCCS and not lint */
401.1Scgd
411.6Sjtc#include "namespace.h"
421.11Schristos#include "reentrant.h"
431.1Scgd#include <sys/types.h>
441.8Slukem
451.8Slukem#include <assert.h>
461.1Scgd#include <dirent.h>
471.8Slukem#include <errno.h>
481.1Scgd#include <stdlib.h>
491.1Scgd#include <unistd.h>
501.6Sjtc
511.6Sjtc#ifdef __weak_alias
521.10Smycroft__weak_alias(closedir,_closedir)
531.6Sjtc#endif
541.1Scgd
551.1Scgd/*
561.1Scgd * close a directory.
571.1Scgd */
581.1Scgdint
591.1Scgdclosedir(dirp)
601.7Sperry	DIR *dirp;
611.1Scgd{
621.1Scgd	int fd;
631.8Slukem
641.8Slukem	_DIAGASSERT(dirp != NULL);
651.1Scgd
661.11Schristos#ifdef _REENTRANT
671.11Schristos	if (__isthreaded)
681.11Schristos		mutex_lock((mutex_t *)dirp->dd_lock);
691.11Schristos#endif
701.11Schristos	__seekdir(dirp, dirp->dd_rewind);	/* free seekdir storage */
711.1Scgd	fd = dirp->dd_fd;
721.1Scgd	dirp->dd_fd = -1;
731.1Scgd	dirp->dd_loc = 0;
741.4Sjtc	free((void *)dirp->dd_buf);
751.11Schristos#ifdef _REENTRANT
761.11Schristos	if (__isthreaded) {
771.11Schristos		mutex_unlock((mutex_t *)dirp->dd_lock);
781.11Schristos		mutex_destroy((mutex_t *)dirp->dd_lock);
791.11Schristos		free(dirp->dd_lock);
801.11Schristos	}
811.11Schristos#endif
821.12Schristos	free((void *)dirp);
831.1Scgd	return(close(fd));
841.1Scgd}
85