1 /* $NetBSD: closedir.c,v 1.16 2010/09/26 02:26:59 yamt Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #if defined(LIBC_SCCS) && !defined(lint) 34 #if 0 35 static char sccsid[] = "@(#)closedir.c 8.1 (Berkeley) 6/10/93"; 36 #else 37 __RCSID("$NetBSD: closedir.c,v 1.16 2010/09/26 02:26:59 yamt Exp $"); 38 #endif 39 #endif /* LIBC_SCCS and not lint */ 40 41 #ifdef __minix 42 /* NetBSD BUG: reentrant.h defines includes. */ 43 #include <sys/types.h> 44 #endif /* !__minix */ 45 46 #include "namespace.h" 47 #include "reentrant.h" 48 #include "extern.h" 49 #include <sys/types.h> 50 51 #include <assert.h> 52 #include <dirent.h> 53 #include <errno.h> 54 #include <stdlib.h> 55 #include <unistd.h> 56 57 #include "dirent_private.h" 58 59 #ifdef __weak_alias 60 __weak_alias(closedir,_closedir) 61 #endif 62 63 /* 64 * close a directory. 65 */ 66 int 67 closedir(DIR *dirp) 68 { 69 int fd; 70 71 _DIAGASSERT(dirp != NULL); 72 73 #ifdef _REENTRANT 74 if (__isthreaded) 75 mutex_lock((mutex_t *)dirp->dd_lock); 76 #endif 77 fd = dirp->dd_fd; 78 dirp->dd_fd = -1; 79 _finidir(dirp); 80 81 #ifdef _REENTRANT 82 if (__isthreaded) { 83 mutex_unlock((mutex_t *)dirp->dd_lock); 84 mutex_destroy((mutex_t *)dirp->dd_lock); 85 free(dirp->dd_lock); 86 } 87 #endif 88 free((void *)dirp); 89 return(close(fd)); 90 } 91