123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105 |
- /****************************************************************************
- * 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;
- }
|