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/*
* Routine to rename a MSDOS filesystem node
*
* Copyright (C) 2010 Chris Johns <chrisj@rtems.org>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* @(#) $Id$
*
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rtems/libio_.h>
#include <time.h>
#include "fat.h"
#include "fat_fat_operations.h"
#include "fat_file.h"
#include "msdos.h"
/* msdos_rename --
* Rename the node by removing the exitsing directory entry and creating a
* new one.
*
* PARAMETERS:
* old_parent_loc - node description for the "old parent" node
* old_loc - node description for the "old" node
* new_parent_loc - node description for the "parent" node
* name - name of new node
*
* RETURNS:
* RC_OK on success, or -1 if error occured (errno set appropriately)
*/
int
msdos_rename(rtems_filesystem_location_info_t *old_parent_loc,
rtems_filesystem_location_info_t *old_loc,
rtems_filesystem_location_info_t *new_parent_loc,
const char *new_name)
{
int rc = RC_OK;
rtems_status_code sc = RTEMS_SUCCESSFUL;
msdos_fs_info_t *fs_info = new_parent_loc->mt_entry->fs_info;
fat_file_fd_t *old_fat_fd = old_loc->node_access;
const char *token;
int len;
/*
* check spelling and format new node name
*/
if (MSDOS_NAME != msdos_get_token(new_name, strlen(new_name), &token, &len)) {
rtems_set_errno_and_return_minus_one(ENAMETOOLONG);
}
/*
* lock volume
*/
sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
if (sc != RTEMS_SUCCESSFUL)
rtems_set_errno_and_return_minus_one(EIO);
/*
* create new directory entry as "hard link", copying relevant info from
* existing file
*/
rc = msdos_creat_node(new_parent_loc,
MSDOS_HARD_LINK,new_name,len,S_IFREG,
old_fat_fd);
if (rc != RC_OK)
{
rtems_semaphore_release(fs_info->vol_sema);
return rc;
}
/*
* mark file removed
*/
rc = msdos_set_first_char4file_name(old_loc->mt_entry,
&old_fat_fd->dir_pos,
MSDOS_THIS_DIR_ENTRY_EMPTY);
rtems_semaphore_release(fs_info->vol_sema);
return rc;
}
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