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/****************************************************************************
* fs/fs_rename.c
*
* Copyright (C) 2007-2009 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 <stdio.h>
#include <errno.h>
#include <nuttx/fs/fs.h>
#include "fs_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: rename
*
* Description: Remove a file managed a mountpoint
*
****************************************************************************/
int rename(FAR const char *oldpath, FAR const char *newpath)
{
FAR struct inode *oldinode;
FAR struct inode *newinode;
const char *oldrelpath = NULL;
const char *newrelpath = NULL;
int ret;
/* Get an inode for the old relpath */
oldinode = inode_find(oldpath, &oldrelpath);
if (!oldinode)
{
/* There is no mountpoint that includes in this path */
ret = ENOENT;
goto errout;
}
/* Verify that the old inode is a valid mountpoint. */
if (!INODE_IS_MOUNTPT(oldinode) || !oldinode->u.i_mops)
{
ret = ENXIO;
goto errout_with_oldinode;
}
/* Get an inode for the new relpath -- it should like on the same mountpoint */
newinode = inode_find(newpath, &newrelpath);
if (!newinode)
{
/* There is no mountpoint that includes in this path */
ret = ENOENT;
goto errout_with_oldinode;
}
/* Verify that the two pathes lie on the same mountpt inode */
if (oldinode != newinode)
{
ret = EXDEV;
goto errout_with_newinode;
}
/* Perform the rename operation using the relative pathes
* at the common mountpoint.
*/
if (oldinode->u.i_mops->rename)
{
ret = oldinode->u.i_mops->rename(oldinode, oldrelpath, newrelpath);
if (ret < 0)
{
ret = -ret;
goto errout_with_newinode;
}
}
else
{
ret = ENOSYS;
goto errout_with_newinode;
}
/* Successfully renamed */
inode_release(oldinode);
inode_release(newinode);
return OK;
errout_with_newinode:
inode_release(newinode);
errout_with_oldinode:
inode_release(oldinode);
errout:
set_errno(ret);
return ERROR;
}
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