88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
/****************************************************************************
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* fs/vfs/fs_close.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 <unistd.h>
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#include <sched.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: file_close
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*
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* Description:
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* Close a file that was previously opened with file_open().
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*
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* Input Parameters:
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* filep - A pointer to a user provided memory location containing the
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* open file data returned by file_open().
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*
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* Returned Value:
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* Zero (OK) is returned on success; A negated errno value is returned on
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* any failure to indicate the nature of the failure.
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*
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****************************************************************************/
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int file_close(FAR struct file *filep)
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{
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struct inode *inode;
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int ret = OK;
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DEBUGASSERT(filep != NULL);
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inode = filep->f_inode;
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/* Check if the struct file is open (i.e., assigned an inode) */
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if (inode)
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{
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/* Close the file, driver, or mountpoint. */
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if (inode->u.i_ops && inode->u.i_ops->close)
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{
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/* Perform the close operation */
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ret = inode->u.i_ops->close(filep);
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}
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/* And release the inode */
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inode_release(inode);
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/* Reset the user file struct instance so that it cannot be reused. */
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memset(filep, 0, sizeof(*filep));
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}
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return ret;
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}
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