diff options
Diffstat (limited to 'nuttx/fs/fs_closeblockdriver.c')
-rw-r--r-- | nuttx/fs/fs_closeblockdriver.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/nuttx/fs/fs_closeblockdriver.c b/nuttx/fs/fs_closeblockdriver.c new file mode 100644 index 000000000..2151b04df --- /dev/null +++ b/nuttx/fs/fs_closeblockdriver.c @@ -0,0 +1,112 @@ +/**************************************************************************** + * fs/fs_closeblockdriver.c + * + * Copyright (C) 2008-2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in pathname and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of pathname 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 <debug.h> +#include <errno.h> +#include <nuttx/fs/fs.h> + +#include "fs_internal.h" + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: close_blockdriver + * + * Description: + * Call the close method and release the inode + * + * Inputs: + * inode - reference to the inode of a block driver opened by open_blockdriver + * + * Return: + * Returns zero on success or a negated errno on failure: + * + * EINVAL - inode is NULL + * ENOTBLK - The inode is not a block driver + * + ****************************************************************************/ + +int close_blockdriver(FAR struct inode *inode) +{ + int ret = 0; /* Assume success */ + + /* Sanity checks */ + +#ifdef CONFIG_DEBUG + if (!inode || !inode->u.i_bops) + { + ret = -EINVAL; + goto errout; + } +#endif + + /* Verify that the inode is a block driver. */ + + if (!INODE_IS_BLOCK(inode)) + { + fdbg("inode is not a block driver\n"); + ret = -ENOTBLK; + goto errout; + } + + /* Close the block driver. Not that no mutually exclusive access + * to the driver is enforced here. That must be done in the driver + * if needed. + */ + + if (inode->u.i_bops->close) + { + ret = inode->u.i_bops->close(inode); + } + + /* Then release the reference on the inode */ + + inode_release(inode); + +errout: + return ret; +} |