80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
/****************************************************************************
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* fs/inode/fs_inodefind.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <assert.h>
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#include <errno.h>
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#include <nuttx/fs/fs.h>
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#include "inode/inode.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: inode_find
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*
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* Description:
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* This is called from the open() logic to get a reference to the inode
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* associated with a path. This is accomplished by calling inode_search().
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* inode_find() is a simple wrapper around inode_search(). The primary
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* difference between inode_find() and inode_search is that inode_find()
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* will lock the inode tree and increment the reference count on the inode.
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*
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****************************************************************************/
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int inode_find(FAR struct inode_search_s *desc)
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{
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int ret;
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/* Find the node matching the path. If found, increment the count of
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* references on the node.
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*/
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ret = inode_lock();
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if (ret < 0)
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{
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return ret;
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}
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ret = inode_search(desc);
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if (ret >= 0)
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{
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/* Found it */
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FAR struct inode *node = desc->node;
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DEBUGASSERT(node != NULL);
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/* Increment the reference count on the inode */
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node->i_crefs++;
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}
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inode_unlock();
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return ret;
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}
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