1 files changed, 106 insertions, 0 deletions
diff --git a/nuttx/fs/fs_inoderelease.c b/nuttx/fs/fs_inoderelease.c
new file mode 100644
index 000000000..bc5026534
--- /dev/null
+++ b/nuttx/fs/fs_inoderelease.c
@@ -0,0 +1,106 @@
+/****************************************************************************
+ * fs_inoderelease.c
+ *
+ *   Copyright (C) 2007-2009 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 <errno.h>
+
+#include <nuttx/kmalloc.h>
+#include <nuttx/fs/fs.h>
+
+#include "fs_internal.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: inode_release
+ *
+ * Description:
+ *   This is called from close() logic when it no longer refers to the inode.
+ *
+ ****************************************************************************/
+
+void inode_release(FAR struct inode *node)
+{
+  if (node)
+    {
+      /* Decrement the references of the inode */
+
+      inode_semtake();
+      if (node->i_crefs)
+        {
+          node->i_crefs--;
+        }
+
+      /* If the subtree was previously deleted and the reference
+       * count has decrement to zero,  then delete the inode
+       * now.
+       */
+
+      if (node->i_crefs <= 0 && (node->i_flags & FSNODEFLAG_DELETED) != 0)
+        {
+          inode_semgive();
+          inode_free(node->i_child);
+          kfree(node);
+        }
+      else
+        {
+          inode_semgive();
+        }
+    }
+}
+