1 files changed, 148 insertions, 0 deletions
diff --git a/nuttx/fs/fs_closedir.c b/nuttx/fs/fs_closedir.c
new file mode 100644
index 000000000..fe0994478
--- /dev/null
+++ b/nuttx/fs/fs_closedir.c
@@ -0,0 +1,148 @@
+/****************************************************************************
+ * 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;
+}