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/****************************************************************************
* fs/fs_closedir.c
*
* Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <dirent.h>
#include <errno.h>
#include <nuttx/kmalloc.h>
#include <nuttx/fs/fs.h>
#include <nuttx/fs/dirent.h>
#include "fs_internal.h"
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: closedir
*
* Description:
* The closedir() function closes the directory stream associated with
* 'dirp'. The directory stream descriptor 'dirp' is not available after
* this call.
*
* Inputs:
* dirp -- An instance of type DIR created by a previous call to opendir();
*
* Return:
* The closedir() function returns 0 on success. On error, -1 is
* returned, and errno is set appropriately.
*
****************************************************************************/
int closedir(FAR DIR *dirp)
{
struct fs_dirent_s *idir = (struct fs_dirent_s *)dirp;
struct inode *inode;
int ret;
if (!idir || !idir->fd_root)
{
ret = EBADF;
goto errout;
}
/* This is the 'root' inode of the directory. This means different
* things wih different filesystems.
*/
inode = idir->fd_root;
/* The way that we handle the close operation depends on what kind of root
* inode we have open.
*/
#ifndef CONFIG_DISABLE_MOUNTPOINT
if (INODE_IS_MOUNTPT(inode) && !DIRENT_ISPSUEDONODE(idir->fd_flags))
{
/* The node is a file system mointpoint. Verify that the mountpoint
* supports the closedir() method (not an error if it does not)
*/
if (inode->u.i_mops && inode->u.i_mops->closedir)
{
/* Perform the closedir() operation */
ret = inode->u.i_mops->closedir(inode, idir);
if (ret < 0)
{
ret = -ret;
goto errout_with_inode;
}
}
}
else
#endif
{
/* The node is part of the root psuedo file system, release
* our contained reference to the 'next' inode.
*/
if (idir->u.psuedo.fd_next)
{
inode_release(idir->u.psuedo.fd_next);
}
}
/* Release our references on the contained 'root' inode */
inode_release(idir->fd_root);
/* Then release the container */
kfree(idir);
return OK;
#ifndef CONFIG_DISABLE_MOUNTPOINT
errout_with_inode:
inode_release(inode);
kfree(idir);
#endif
errout:
set_errno(ret);
return ERROR;
}
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