diff options
Diffstat (limited to 'nuttx/fs/fs_rename.c')
-rw-r--r-- | nuttx/fs/fs_rename.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/nuttx/fs/fs_rename.c b/nuttx/fs/fs_rename.c new file mode 100644 index 000000000..157775132 --- /dev/null +++ b/nuttx/fs/fs_rename.c @@ -0,0 +1,153 @@ +/**************************************************************************** + * 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; +} |