1 files changed, 92 insertions, 0 deletions
diff --git a/cpukit/libfs/src/dosfs/msdos_rename.c b/cpukit/libfs/src/dosfs/msdos_rename.c
new file mode 100644
index 0000000000..1f5a6d9c6a
--- /dev/null
+++ b/cpukit/libfs/src/dosfs/msdos_rename.c
@@ -0,0 +1,92 @@
+/*
+ * 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;
+}