106 lines
3.6 KiB
C
106 lines
3.6 KiB
C
/****************************************************************************
|
|
* fs/inode/fs_fileclose.c
|
|
*
|
|
* Copyright (C) 2016-2018 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 <assert.h>
|
|
|
|
#include <nuttx/fs/fs.h>
|
|
|
|
#include "inode/inode.h"
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: file_close
|
|
*
|
|
* Description:
|
|
* Close a file that was previously opend with file_open() (or detached
|
|
* with file_detach()).
|
|
*
|
|
* REVISIT: This is essentially the same as _files_close()
|
|
*
|
|
* Input Parameters:
|
|
* filep - A pointer to a user provided memory location containing the
|
|
* open file data returned by file_detach().
|
|
*
|
|
* Returned Value:
|
|
* Zero (OK) is returned on success; A negated errno value is returned on
|
|
* any failure to indicate the nature of the failure.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int file_close(FAR struct file *filep)
|
|
{
|
|
struct inode *inode;
|
|
int ret = OK;
|
|
|
|
DEBUGASSERT(filep != NULL);
|
|
inode = filep->f_inode;
|
|
|
|
/* Check if the struct file is open (i.e., assigned an inode) */
|
|
|
|
if (inode)
|
|
{
|
|
/* Close the file, driver, or mountpoint. */
|
|
|
|
if (inode->u.i_ops && inode->u.i_ops->close)
|
|
{
|
|
/* Perform the close operation */
|
|
|
|
ret = inode->u.i_ops->close(filep);
|
|
}
|
|
|
|
/* And release the inode */
|
|
|
|
inode_release(inode);
|
|
|
|
/* Reset the user file struct instance so that it cannot be reused. */
|
|
|
|
filep->f_oflags = 0;
|
|
filep->f_pos = 0;
|
|
filep->f_inode = NULL;
|
|
filep->f_priv = NULL;
|
|
}
|
|
|
|
return ret;
|
|
}
|