113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
/****************************************************************************
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* fs/fs_closeblockdriver.c
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*
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* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in pathname and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of pathname code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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 <debug.h>
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#include <errno.h>
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#include <nuttx/fs/fs.h>
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#include "fs_internal.h"
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: close_blockdriver
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*
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* Description:
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* Call the close method and release the inode
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*
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* Inputs:
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* inode - reference to the inode of a block driver opened by open_blockdriver
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*
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* Return:
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* Returns zero on success or a negated errno on failure:
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*
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* EINVAL - inode is NULL
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* ENOTBLK - The inode is not a block driver
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*
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****************************************************************************/
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int close_blockdriver(FAR struct inode *inode)
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{
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int ret = 0; /* Assume success */
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/* Sanity checks */
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#ifdef CONFIG_DEBUG
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if (!inode || !inode->u.i_bops)
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{
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ret = -EINVAL;
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goto errout;
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}
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#endif
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/* Verify that the inode is a block driver. */
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if (!INODE_IS_BLOCK(inode))
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{
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fdbg("inode is not a block driver\n");
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ret = -ENOTBLK;
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goto errout;
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}
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/* Close the block driver. Not that no mutually exclusive access
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* to the driver is enforced here. That must be done in the driver
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* if needed.
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*/
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if (inode->u.i_bops->close)
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{
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ret = inode->u.i_bops->close(inode);
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}
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/* Then release the reference on the inode */
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inode_release(inode);
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errout:
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return ret;
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}
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