forked from Archive/PX4-Autopilot
155 lines
4.8 KiB
C
155 lines
4.8 KiB
C
/****************************************************************************
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* fs/fs_rename.c
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*
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* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source 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 source 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 <stdio.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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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Variables
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****************************************************************************/
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/****************************************************************************
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* Public Variables
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****************************************************************************/
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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: rename
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*
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* Description: Remove a file managed a mountpoint
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*
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****************************************************************************/
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int rename(FAR const char *oldpath, FAR const char *newpath)
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{
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FAR struct inode *oldinode;
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FAR struct inode *newinode;
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const char *oldrelpath = NULL;
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const char *newrelpath = NULL;
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int ret;
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/* Get an inode for the old relpath */
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oldinode = inode_find(oldpath, &oldrelpath);
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if (!oldinode)
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{
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/* There is no mountpoint that includes in this path */
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ret = ENOENT;
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goto errout;
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}
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/* Verify that the old inode is a valid mountpoint. */
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if (!INODE_IS_MOUNTPT(oldinode) || !oldinode->u.i_mops)
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{
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ret = ENXIO;
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goto errout_with_oldinode;
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}
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/* Get an inode for the new relpath -- it should like on the same mountpoint */
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newinode = inode_find(newpath, &newrelpath);
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if (!newinode)
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{
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/* There is no mountpoint that includes in this path */
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ret = ENOENT;
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goto errout_with_oldinode;
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}
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/* Verify that the two pathes lie on the same mountpt inode */
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if (oldinode != newinode)
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{
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ret = EXDEV;
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goto errout_with_newinode;
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}
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/* Perform the rename operation using the relative pathes
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* at the common mountpoint.
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*/
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if (oldinode->u.i_mops->rename)
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{
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ret = oldinode->u.i_mops->rename(oldinode, oldrelpath, newrelpath);
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if (ret < 0)
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{
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ret = -ret;
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goto errout_with_newinode;
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}
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}
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else
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{
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ret = ENOSYS;
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goto errout_with_newinode;
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}
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/* Successfully renamed */
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inode_release(oldinode);
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inode_release(newinode);
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return OK;
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errout_with_newinode:
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inode_release(newinode);
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errout_with_oldinode:
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inode_release(oldinode);
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errout:
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*get_errno_ptr() = ret;
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return ERROR;
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}
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