| /**************************************************************************** |
| * fs/inode/fs_inoderelease.c |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. The |
| * ASF licenses this file to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the |
| * License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations |
| * under the License. |
| * |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <nuttx/config.h> |
| |
| #include <assert.h> |
| #include <debug.h> |
| #include <errno.h> |
| |
| #include <nuttx/kmalloc.h> |
| #include <nuttx/fs/fs.h> |
| |
| #include "inode/inode.h" |
| |
| /**************************************************************************** |
| * 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) |
| { |
| int ret; |
| |
| if (node) |
| { |
| /* Decrement the references of the inode */ |
| |
| do |
| { |
| ret = inode_lock(); |
| |
| /* This only possible error is due to cancellation of the thread. |
| * We need to try again anyway in this case, otherwise the |
| * reference count would be wrong. |
| */ |
| |
| DEBUGASSERT(ret == OK || ret == -ECANCELED); |
| } |
| while (ret < 0); |
| |
| 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) |
| { |
| /* If the inode has been properly unlinked, then the peer pointer |
| * should be NULL. |
| */ |
| |
| inode_unlock(); |
| |
| DEBUGASSERT(node->i_peer == NULL); |
| inode_free(node); |
| } |
| else |
| { |
| inode_unlock(); |
| } |
| } |
| } |