diff options
Diffstat (limited to 'nuttx/fs/fs_rewinddir.c')
-rw-r--r-- | nuttx/fs/fs_rewinddir.c | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/nuttx/fs/fs_rewinddir.c b/nuttx/fs/fs_rewinddir.c deleted file mode 100644 index c22c15f18..000000000 --- a/nuttx/fs/fs_rewinddir.c +++ /dev/null @@ -1,145 +0,0 @@ -/**************************************************************************** - * fs/fs_rewinddir.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/fs/fs.h> -#include <nuttx/fs/dirent.h> - -#include "fs_internal.h" - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: rewindpseudodir - ****************************************************************************/ - -static inline void rewindpseudodir(struct fs_dirent_s *idir) -{ - struct inode *prev; - - inode_semtake(); - - /* Reset the position to the beginning */ - - prev = idir->u.pseudo.fd_next; /* (Save to delete later) */ - idir->u.pseudo.fd_next = idir->fd_root; /* The next node to visit */ - idir->fd_position = 0; /* Reset position */ - - /* Increment the reference count on the root=next node. We - * should now have two references on the inode. - */ - - idir->fd_root->i_crefs++; - inode_semgive(); - - /* Then release the reference to the old next inode */ - - if (prev) - { - inode_release(prev); - } -} - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: rewinddir - * - * Description: - * The rewinddir() function resets the position of the - * directory stream dir to the beginning of the directory. - * - * Inputs: - * dirp -- An instance of type DIR created by a previous - * call to opendir(); - * - * Return: - * None - * - ****************************************************************************/ - -void rewinddir(FAR DIR *dirp) -{ - struct fs_dirent_s *idir = (struct fs_dirent_s *)dirp; -#ifndef CONFIG_DISABLE_MOUNTPOINT - struct inode *inode; -#endif - - /* Sanity checks */ - - if (!idir || !idir->fd_root) - { - return; - } - - /* The way we handle the readdir depends on the type of inode - * that we are dealing with. - */ - -#ifndef CONFIG_DISABLE_MOUNTPOINT - inode = idir->fd_root; - if (INODE_IS_MOUNTPT(inode)) - { - /* The node is a file system mointpoint. Verify that the mountpoint - * supports the rewinddir() method - */ - - if (inode->u.i_mops && inode->u.i_mops->rewinddir) - { - /* Perform the rewinddir() operation */ - - inode->u.i_mops->rewinddir(inode, idir); - } - } - else -#endif - { - /* The node is part of the root pseudo file system */ - - rewindpseudodir(idir); - } -} |