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  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #if defined(LIBC_SCCS) && !defined(lint)
  35 static char sccsid[] = "@(#)closedir.c  8.1 (Berkeley) 6/10/93";
  36 #endif /* LIBC_SCCS and not lint */
  37 #include <sys/cdefs.h>
  38 __FBSDID("$FreeBSD: src/lib/libc/gen/closedir.c,v 1.10 2002/02/01 00:57:29 obrien Exp $");
  39
  40 #include "namespace.h"
  41 #include <sys/types.h>
  42 #include <dirent.h>
  43 #include <pthread.h>
  44 #include <stdlib.h>
  45 #include <unistd.h>
  46 #include "un-namespace.h"
  47
  48 #include "libc_private.h"
  49 #include "telldir.h"
  50
  51 /*
  52  * close a directory.
  53  */
  54 int
  55 closedir(dirp)
  56         DIR *dirp;
  57 {
  58         int fd;
  59
  60         if (__isthreaded)
  61                 _pthread_mutex_lock((pthread_mutex_t *)&dirp->dd_lock);
  62         _seekdir(dirp, dirp->dd_rewind);        /* free seekdir storage */
  63         fd = dirp->dd_fd;
  64         dirp->dd_fd = -1;
  65         dirp->dd_loc = 0;
  66         free((void *)dirp->dd_buf);
  67         _reclaim_telldir(dirp);
  68         if (__isthreaded) {
  69                 _pthread_mutex_unlock((pthread_mutex_t *)&dirp->dd_lock);
  70                 _pthread_mutex_destroy((pthread_mutex_t *)&dirp->dd_lock);
  71         }
  72         free((void *)dirp);
  73         return(_close(fd));
  74 }