xref: /illumos-gate/usr/src/lib/libc/port/gen/closedir.c (revision 7257d1b4)
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 (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1988 AT&T	*/
28 /*	  All Rights Reserved  	*/
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 /*
33  * closedir -- C library extension routine
34  *
35  * We use lmalloc()/lfree() rather than malloc()/free() in
36  * order to allow opendir()/readdir()/closedir() to be called
37  * while holding internal libc locks.
38  */
39 
40 #pragma weak _closedir = closedir
41 
42 #include "lint.h"
43 #include <dirent.h>
44 #include <stdlib.h>
45 #include <unistd.h>
46 #include "libc.h"
47 
48 int
closedir(DIR * dirp)49 closedir(DIR *dirp)
50 {
51 	private_DIR *pdirp = (private_DIR *)(uintptr_t)dirp;
52 	int fd = dirp->dd_fd;
53 
54 	(void) mutex_destroy(&pdirp->dd_lock);
55 	lfree(dirp->dd_buf, DIRBUF);
56 	lfree(pdirp, sizeof (*pdirp));
57 	return (close(fd));
58 }
59