| /**************************************************************************** |
| * fs/fs_closedir.c |
| * |
| * Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved. |
| * Author: Gregory Nutt <spudmonkey@racsa.co.cr> |
| * |
| * 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.h> |
| #include <nuttx/dirent.h> |
| |
| #include "fs_internal.h" |
| |
| /**************************************************************************** |
| * Private Functions |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Public Functions |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Name: seekdir |
| * |
| * 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: |
| errno = ret; |
| return ERROR; |
| } |
| |