gen/FreeBSD/closedir.c

   1 /*
   2  * Copyright (c) 1983, 1993
   3  *      Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 4. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #if defined(LIBC_SCCS) && !defined(lint)
  31 static char sccsid[] = "@(#)closedir.c  8.1 (Berkeley) 6/10/93";
  32 #endif /* LIBC_SCCS and not lint */
  33 #include <sys/cdefs.h>
  34 __FBSDID("$FreeBSD: src/lib/libc/gen/closedir.c,v 1.13 2007/12/03 14:33:50 des Exp $");
  35
  36 #include "namespace.h"
  37 #include <sys/types.h>
  38 #include <dirent.h>
  39 #include <pthread.h>
  40 #include <stdlib.h>
  41 #include <unistd.h>
  42 #include "un-namespace.h"
  43
  44 #include "libc_private.h"
  45 #include "telldir.h"
  46
  47 /*
  48  * close a directory.
  49  */
  50 int
  51 closedir(dirp)
  52         DIR *dirp;
  53 {
  54         int fd;
  55
  56         if (__isthreaded)
  57                 _pthread_mutex_lock(&dirp->dd_lock);
  58         _seekdir(dirp, dirp->dd_rewind);        /* free seekdir storage */
  59         fd = dirp->dd_fd;
  60         dirp->dd_fd = -1;
  61         dirp->dd_loc = 0;
  62         free((void *)dirp->dd_buf);
  63         _reclaim_telldir(dirp);
  64         if (__isthreaded) {
  65                 _pthread_mutex_unlock(&dirp->dd_lock);
  66                 _pthread_mutex_destroy(&dirp->dd_lock);
  67         }
  68         free((void *)dirp);
  69         return(_close(fd));
  70 }