Embedded GPLv2 license in dfs

27 files changed, 1758 insertions, 1352 deletions

diff --git a/components/dfs/filesystems/devfs/console.c b/components/dfs/filesystems/devfs/console.c
index 82f1c94f2f..0cac53a1cd 100644
--- a/components/dfs/filesystems/devfs/console.c
+++ b/components/dfs/filesystems/devfs/console.c
@@ -1,7 +1,26 @@
 /*
- * RT-Thread Console Device File
+ * File      : console.c
+ * This file is part of Device File System in RT-Thread RTOS
+ * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
  *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
  */
+
 #include <rtthread.h>
 
 struct console_device
diff --git a/components/dfs/filesystems/devfs/devfs.c b/components/dfs/filesystems/devfs/devfs.c
index 4d23f78bb6..969c5d3321 100644
--- a/components/dfs/filesystems/devfs/devfs.c
+++ b/components/dfs/filesystems/devfs/devfs.c
@@ -1,3 +1,26 @@
+/*
+ * File      : devfs.c
+ * This file is part of Device File System in RT-Thread RTOS
+ * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
 #include <rtthread.h>
 #include <dfs.h>
 #include <dfs_fs.h>
@@ -6,276 +29,276 @@
 
 struct device_dirent
 {
-	rt_device_t *devices;
-	rt_uint16_t read_index;
-	rt_uint16_t device_count;
+    rt_device_t *devices;
+    rt_uint16_t read_index;
+    rt_uint16_t device_count;
 };
 
 int dfs_device_fs_mount(struct dfs_filesystem *fs, unsigned long rwflag, const void *data)
 {
-	return DFS_STATUS_OK;
+    return DFS_STATUS_OK;
 }
 
 int dfs_device_fs_ioctl(struct dfs_fd *file, int cmd, void *args)
 {
-	rt_err_t result;
-	rt_device_t dev_id;
+    rt_err_t result;
+    rt_device_t dev_id;
 
-	RT_ASSERT(file != RT_NULL);
+    RT_ASSERT(file != RT_NULL);
 
-	/* get device handler */
-	dev_id = (rt_device_t)file->data;
-	RT_ASSERT(dev_id != RT_NULL);
+    /* get device handler */
+    dev_id = (rt_device_t)file->data;
+    RT_ASSERT(dev_id != RT_NULL);
 
-	/* close device handler */
-	result = rt_device_control(dev_id, cmd, args);
-	if (result == RT_EOK)
-		return DFS_STATUS_OK;
+    /* close device handler */
+    result = rt_device_control(dev_id, cmd, args);
+    if (result == RT_EOK)
+        return DFS_STATUS_OK;
 
-	return -DFS_STATUS_EIO;
+    return -DFS_STATUS_EIO;
 }
 
 int dfs_device_fs_read(struct dfs_fd *file, void *buf, rt_size_t count)
 {
-	int result;
-	rt_device_t dev_id;
+    int result;
+    rt_device_t dev_id;
 
-	RT_ASSERT(file != RT_NULL);
+    RT_ASSERT(file != RT_NULL);
 
-	/* get device handler */
-	dev_id = (rt_device_t)file->data;
-	RT_ASSERT(dev_id != RT_NULL);
+    /* get device handler */
+    dev_id = (rt_device_t)file->data;
+    RT_ASSERT(dev_id != RT_NULL);
 
-	/* read device data */
-	result = rt_device_read(dev_id, file->pos, buf, count);
-	file->pos += result;
+    /* read device data */
+    result = rt_device_read(dev_id, file->pos, buf, count);
+    file->pos += result;
 
-	return result;
+    return result;
 }
 
 int dfs_device_fs_write(struct dfs_fd *file, const void *buf, rt_size_t count)
 {
-	int result;
-	rt_device_t dev_id;
+    int result;
+    rt_device_t dev_id;
 
-	RT_ASSERT(file != RT_NULL);
+    RT_ASSERT(file != RT_NULL);
 
-	/* get device handler */
-	dev_id = (rt_device_t)file->data;
-	RT_ASSERT(dev_id != RT_NULL);
+    /* get device handler */
+    dev_id = (rt_device_t)file->data;
+    RT_ASSERT(dev_id != RT_NULL);
 
-	/* read device data */
-	result = rt_device_write(dev_id, file->pos, buf, count);
-	file->pos += result;
+    /* read device data */
+    result = rt_device_write(dev_id, file->pos, buf, count);
+    file->pos += result;
 
-	return result;
+    return result;
 }
 
 int dfs_device_fs_close(struct dfs_fd *file)
 {
-	rt_err_t result;
-	rt_device_t dev_id;
+    rt_err_t result;
+    rt_device_t dev_id;
 
-	RT_ASSERT(file != RT_NULL);
+    RT_ASSERT(file != RT_NULL);
 
-	if (file->type == FT_DIRECTORY)
-	{
-		struct device_dirent *root_dirent;
+    if (file->type == FT_DIRECTORY)
+    {
+        struct device_dirent *root_dirent;
 
-		root_dirent = (struct device_dirent *)file->data;
-		RT_ASSERT(root_dirent != RT_NULL);
-		
-		/* release dirent */
-		rt_free(root_dirent);
-		return DFS_STATUS_OK;
-	}
+        root_dirent = (struct device_dirent *)file->data;
+        RT_ASSERT(root_dirent != RT_NULL);
+        
+        /* release dirent */
+        rt_free(root_dirent);
+        return DFS_STATUS_OK;
+    }
 
-	/* get device handler */
-	dev_id = (rt_device_t)file->data;
-	RT_ASSERT(dev_id != RT_NULL);
+    /* get device handler */
+    dev_id = (rt_device_t)file->data;
+    RT_ASSERT(dev_id != RT_NULL);
 
-	/* close device handler */
-	result = rt_device_close(dev_id);
-	if (result == RT_EOK)
-	{
-		file->data = RT_NULL;
+    /* close device handler */
+    result = rt_device_close(dev_id);
+    if (result == RT_EOK)
+    {
+        file->data = RT_NULL;
 
-		return DFS_STATUS_OK;
-	}
+        return DFS_STATUS_OK;
+    }
 
-	return -DFS_STATUS_EIO;
+    return -DFS_STATUS_EIO;
 }
 
 int dfs_device_fs_open(struct dfs_fd *file)
 {
-	rt_device_t device;
+    rt_device_t device;
 
-	if (file->flags & DFS_O_CREAT)
-		return -DFS_STATUS_EINVAL;
+    if (file->flags & DFS_O_CREAT)
+        return -DFS_STATUS_EINVAL;
 
-	/* open root directory */
-	if ((file->path[0] == '/') && (file->path[1] == '\0') &&
-		(file->flags & DFS_O_DIRECTORY))
-	{
-		struct rt_object *object;
-		struct rt_list_node *node;
-		struct rt_object_information *information;
-		struct device_dirent *root_dirent;
-		rt_uint32_t count = 0;
-		
-		extern struct rt_object_information rt_object_container[];
+    /* open root directory */
+    if ((file->path[0] == '/') && (file->path[1] == '\0') &&
+        (file->flags & DFS_O_DIRECTORY))
+    {
+        struct rt_object *object;
+        struct rt_list_node *node;
+        struct rt_object_information *information;
+        struct device_dirent *root_dirent;
+        rt_uint32_t count = 0;
+        
+        extern struct rt_object_information rt_object_container[];
 
-		/* lock scheduler */
-		rt_enter_critical();
+        /* lock scheduler */
+        rt_enter_critical();
 
-		/* traverse device object */
-		information = &rt_object_container[RT_Object_Class_Device];
-		for (node = information->object_list.next; node != &(information->object_list); node = node->next)
-		{
-			count ++;
-		}
+        /* traverse device object */
+        information = &rt_object_container[RT_Object_Class_Device];
+        for (node = information->object_list.next; node != &(information->object_list); node = node->next)
+        {
+            count ++;
+        }
 
-		root_dirent = (struct device_dirent *)rt_malloc(sizeof(struct device_dirent) + 
-			count * sizeof(rt_device_t));
-		if (root_dirent != RT_NULL)
-		{
-			root_dirent->devices = (rt_device_t *)(root_dirent + 1);
-			root_dirent->read_index = 0;
-			root_dirent->device_count = count;
-			count = 0;
-			/* get all device node */
-			for (node = information->object_list.next; node != &(information->object_list); node = node->next)
-			{
-				object = rt_list_entry(node, struct rt_object, list);
-				root_dirent->devices[count] = (rt_device_t)object;
-				count ++;
-			}
-		}
-		rt_exit_critical();
+        root_dirent = (struct device_dirent *)rt_malloc(sizeof(struct device_dirent) + 
+            count * sizeof(rt_device_t));
+        if (root_dirent != RT_NULL)
+        {
+            root_dirent->devices = (rt_device_t *)(root_dirent + 1);
+            root_dirent->read_index = 0;
+            root_dirent->device_count = count;
+            count = 0;
+            /* get all device node */
+            for (node = information->object_list.next; node != &(information->object_list); node = node->next)
+            {
+                object = rt_list_entry(node, struct rt_object, list);
+                root_dirent->devices[count] = (rt_device_t)object;
+                count ++;
+            }
+        }
+        rt_exit_critical();
 
-		/* set data */
-		file->data = root_dirent;
-		
-		return DFS_STATUS_OK;
-	}
+        /* set data */
+        file->data = root_dirent;
+        
+        return DFS_STATUS_OK;
+    }
 
-	device = rt_device_find(&file->path[1]);
-	if (device == RT_NULL)
-		return -DFS_STATUS_ENODEV;
+    device = rt_device_find(&file->path[1]);
+    if (device == RT_NULL)
+        return -DFS_STATUS_ENODEV;
 
-	file->data = device;
-	
-	return DFS_STATUS_OK;
+    file->data = device;
+    
+    return DFS_STATUS_OK;
 }
 
 int dfs_device_fs_stat(struct dfs_filesystem *fs, const char *path, struct stat *st)
 {
-	/* stat root directory */
-	if ((path[0] == '/') && (path[1] == '\0'))
-	{
-		st->st_dev = 0;
+    /* stat root directory */
+    if ((path[0] == '/') && (path[1] == '\0'))
+    {
+        st->st_dev = 0;
 
-		st->st_mode = DFS_S_IFREG | DFS_S_IRUSR | DFS_S_IRGRP | DFS_S_IROTH |
-			DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH;
-		st->st_mode &= ~DFS_S_IFREG;
-		st->st_mode |= DFS_S_IFDIR | DFS_S_IXUSR | DFS_S_IXGRP | DFS_S_IXOTH;
+        st->st_mode = DFS_S_IFREG | DFS_S_IRUSR | DFS_S_IRGRP | DFS_S_IROTH |
+            DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH;
+        st->st_mode &= ~DFS_S_IFREG;
+        st->st_mode |= DFS_S_IFDIR | DFS_S_IXUSR | DFS_S_IXGRP | DFS_S_IXOTH;
 
-		st->st_size  = 0;
-		st->st_mtime = 0;
-		st->st_blksize = 512;
-		
-		return DFS_STATUS_OK;
-	}
-	else
-	{
-		rt_device_t dev_id;
+        st->st_size  = 0;
+        st->st_mtime = 0;
+        st->st_blksize = 512;
+        
+        return DFS_STATUS_OK;
+    }
+    else
+    {
+        rt_device_t dev_id;
 
-		dev_id = rt_device_find(&path[1]);
-		if (dev_id != RT_NULL)
-		{
-			st->st_dev = 0;
+        dev_id = rt_device_find(&path[1]);
+        if (dev_id != RT_NULL)
+        {
+            st->st_dev = 0;
 
-			st->st_mode = DFS_S_IRUSR | DFS_S_IRGRP | DFS_S_IROTH |
-				DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH;
+            st->st_mode = DFS_S_IRUSR | DFS_S_IRGRP | DFS_S_IROTH |
+                DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH;
 
-			if (dev_id->type == RT_Device_Class_Char)
-				st->st_mode |= DFS_S_IFCHR;
-			else if (dev_id->type == RT_Device_Class_Block)
-				st->st_mode |= DFS_S_IFBLK;
-			else
-				st->st_mode |= DFS_S_IFREG;
+            if (dev_id->type == RT_Device_Class_Char)
+                st->st_mode |= DFS_S_IFCHR;
+            else if (dev_id->type == RT_Device_Class_Block)
+                st->st_mode |= DFS_S_IFBLK;
+            else
+                st->st_mode |= DFS_S_IFREG;
 
-			st->st_size  = 0;
-			st->st_mtime = 0;
-			st->st_blksize = 512;
-			
-			return DFS_STATUS_OK;
-		}
-	}
+            st->st_size  = 0;
+            st->st_mtime = 0;
+            st->st_blksize = 512;
+            
+            return DFS_STATUS_OK;
+        }
+    }
 
-	return -DFS_STATUS_ENOENT;
+    return -DFS_STATUS_ENOENT;
 }
 
 int dfs_device_fs_getdents(struct dfs_fd *file, struct dirent *dirp, rt_uint32_t count)
 {
-	rt_uint32_t index;
-	rt_object_t object;
-	struct dirent *d;
-	struct device_dirent *root_dirent;
+    rt_uint32_t index;
+    rt_object_t object;
+    struct dirent *d;
+    struct device_dirent *root_dirent;
 
-	root_dirent = (struct device_dirent *)file->data;
-	RT_ASSERT(root_dirent != RT_NULL);
+    root_dirent = (struct device_dirent *)file->data;
+    RT_ASSERT(root_dirent != RT_NULL);
 
-	/* make integer count */
-	count = (count / sizeof(struct dirent));
-	if (count == 0)
-		return -DFS_STATUS_EINVAL;
+    /* make integer count */
+    count = (count / sizeof(struct dirent));
+    if (count == 0)
+        return -DFS_STATUS_EINVAL;
 
-	for (index = 0; index < count && index + root_dirent->read_index < root_dirent->device_count; 
-		index ++)
-	{
-		object = (rt_object_t)root_dirent->devices[root_dirent->read_index + index];
+    for (index = 0; index < count && index + root_dirent->read_index < root_dirent->device_count; 
+        index ++)
+    {
+        object = (rt_object_t)root_dirent->devices[root_dirent->read_index + index];
 
-		d = dirp + index;
-		d->d_type = DFS_DT_REG;
-		d->d_namlen = RT_NAME_MAX;
-		d->d_reclen = (rt_uint16_t)sizeof(struct dirent);
-		rt_strncpy(d->d_name, object->name, RT_NAME_MAX);
-	}
+        d = dirp + index;
+        d->d_type = DFS_DT_REG;
+        d->d_namlen = RT_NAME_MAX;
+        d->d_reclen = (rt_uint16_t)sizeof(struct dirent);
+        rt_strncpy(d->d_name, object->name, RT_NAME_MAX);
+    }
 
-	root_dirent->read_index += index;
+    root_dirent->read_index += index;
 
-	return index * sizeof(struct dirent);
+    return index * sizeof(struct dirent);
 }
 
 static const struct dfs_filesystem_operation _device_fs = 
 {
-	"devfs",
-	DFS_FS_FLAG_DEFAULT,
-	dfs_device_fs_mount,
-	RT_NULL,
-	RT_NULL,
-	RT_NULL,
+    "devfs",
+    DFS_FS_FLAG_DEFAULT,
+    dfs_device_fs_mount,
+    RT_NULL,
+    RT_NULL,
+    RT_NULL,
 
-	dfs_device_fs_open,
-	dfs_device_fs_close,
-	dfs_device_fs_ioctl,
-	dfs_device_fs_read,
-	dfs_device_fs_write,
-	RT_NULL,
-	RT_NULL,
-	dfs_device_fs_getdents,
-	RT_NULL,
-	dfs_device_fs_stat,
-	RT_NULL,
+    dfs_device_fs_open,
+    dfs_device_fs_close,
+    dfs_device_fs_ioctl,
+    dfs_device_fs_read,
+    dfs_device_fs_write,
+    RT_NULL,
+    RT_NULL,
+    dfs_device_fs_getdents,
+    RT_NULL,
+    dfs_device_fs_stat,
+    RT_NULL,
 };
 
 int devfs_init(void)
 {
-	/* register rom file system */
-	dfs_register(&_device_fs);
+    /* register rom file system */
+    dfs_register(&_device_fs);
 
-	return 0;
+    return 0;
 }
 INIT_FS_EXPORT(devfs_init);
 
diff --git a/components/dfs/filesystems/devfs/devfs.h b/components/dfs/filesystems/devfs/devfs.h
index 248aab91d7..ef320b78c8 100644
--- a/components/dfs/filesystems/devfs/devfs.h
+++ b/components/dfs/filesystems/devfs/devfs.h
@@ -1,3 +1,26 @@
+/*
+ * File      : devfs.h
+ * This file is part of Device File System in RT-Thread RTOS
+ * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
 #ifndef __DEVICE_FS_H__
 #define __DEVICE_FS_H__
 
diff --git a/components/dfs/filesystems/elmfat/dfs_elm.c b/components/dfs/filesystems/elmfat/dfs_elm.c
index 1a0eeb731f..4137504985 100644
--- a/components/dfs/filesystems/elmfat/dfs_elm.c
+++ b/components/dfs/filesystems/elmfat/dfs_elm.c
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2008-2011, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/nfs/dfs_nfs.c b/components/dfs/filesystems/nfs/dfs_nfs.c
index 7e8ceeb99f..3709cc33fe 100644
--- a/components/dfs/filesystems/nfs/dfs_nfs.c
+++ b/components/dfs/filesystems/nfs/dfs_nfs.c
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
@@ -21,7 +31,7 @@
 #include "mount.h"
 #include "nfs.h"
 
-#define NAME_MAX	64
+#define NAME_MAX    64
 #define DFS_NFS_MAX_MTU  1024
 
 #ifdef _WIN32
@@ -30,1080 +40,1106 @@
 
 struct nfs_file
 {
-	nfs_fh3 handle;		/* handle */
-	size_t offset;		/* current offset */
+    nfs_fh3 handle;     /* handle */
+    size_t offset;      /* current offset */
 
-	size_t size;		/* total size */
-	bool_t eof;			/* end of file */
+    size_t size;        /* total size */
+    bool_t eof;         /* end of file */
 };
 
 struct nfs_dir
 {
-	nfs_fh3 handle;
-	cookie3 cookie;
-	cookieverf3 cookieverf;
-	entry3 *entry;
-	bool_t eof;
-	READDIR3res res;
+    nfs_fh3 handle;
+    cookie3 cookie;
+    cookieverf3 cookieverf;
+    entry3 *entry;
+    bool_t eof;
+    READDIR3res res;
 };
 
-#define HOST_LENGTH			32
-#define EXPORT_PATH_LENGTH	32
+#define HOST_LENGTH         32
+#define EXPORT_PATH_LENGTH  32
 struct nfs_filesystem
 {
-	nfs_fh3 root_handle;
-	nfs_fh3 current_handle;
-	CLIENT *nfs_client;
-	CLIENT *mount_client;
+    nfs_fh3 root_handle;
+    nfs_fh3 current_handle;
+    CLIENT *nfs_client;
+    CLIENT *mount_client;
 
-	char host[HOST_LENGTH];
-	char export[EXPORT_PATH_LENGTH];
+    char host[HOST_LENGTH];
+    char export[EXPORT_PATH_LENGTH];
 };
 typedef struct nfs_file nfs_file;
 typedef struct nfs_dir nfs_dir;
 nfs_dir *nfs_opendir(struct nfs_filesystem *nfs, const char *path);
 
 static int nfs_parse_host_export(const char *host_export, 
-	char *host, size_t host_len, 
-	char *export, size_t export_len)
+                                 char       *host,
+                                 size_t      host_len, 
+                                 char       *export,
+                                 size_t      export_len)
 {
-	int index;
+    int index;
 
-	for (index = 0; index < host_len; index ++)
-	{
-		/* it's end of string, failed */
-		if (host_export[index] == 0)
-			return -1;
+    for (index = 0; index < host_len; index ++)
+    {
+        /* it's end of string, failed */
+        if (host_export[index] == 0)
+            return -1;
 
-		/* copy to host buffer */
-		if (host_export[index] != ':')
-			host[index] = host_export[index];
-		else
-			break;
-	}
+        /* copy to host buffer */
+        if (host_export[index] != ':')
+            host[index] = host_export[index];
+        else
+            break;
+    }
 
-	/* host buffer is not enough, failed */
-	if (index == host_len)
-		return -1;
+    /* host buffer is not enough, failed */
+    if (index == host_len)
+        return -1;
 
-	/* make RT_NULL */
-	host_len = index;
-	host[host_len] = '\0';
+    /* make RT_NULL */
+    host_len = index;
+    host[host_len] = '\0';
 
-	host_len ++;
+    host_len ++;
 
-	/* copy export path */
-	for (index = host_len; index < host_len + export_len; index ++)
-	{
-		if (host_export[index] == 0) 
-		{
-			export[index - host_len] = '\0';
-			return 0;
-		}
+    /* copy export path */
+    for (index = host_len; index < host_len + export_len; index ++)
+    {
+        if (host_export[index] == 0) 
+        {
+            export[index - host_len] = '\0';
 
-		export[index - host_len] = host_export[index];
-	}
+            return 0;
+        }
 
-	return -1;
+        export[index - host_len] = host_export[index];
+    }
+
+    return -1;
 }
 
 static void copy_handle(nfs_fh3 *dest, const nfs_fh3 *source)
 {
-	dest->data.data_len = source->data.data_len;
-	dest->data.data_val = rt_malloc(dest->data.data_len);
-	if (dest->data.data_val == RT_NULL)
-	{
-		dest->data.data_len = 0;
-		return;
-	}
+    dest->data.data_len = source->data.data_len;
+    dest->data.data_val = rt_malloc(dest->data.data_len);
+    if (dest->data.data_val == RT_NULL)
+    {
+        dest->data.data_len = 0;
+
+        return;
+    }
 
-	memcpy(dest->data.data_val, source->data.data_val, dest->data.data_len);
+    memcpy(dest->data.data_val, source->data.data_val, dest->data.data_len);
 }
 
 static nfs_fh3 *get_handle(struct nfs_filesystem *nfs, const char *name)
 {
-	nfs_fh3 *handle = RT_NULL;
-	char *file;
-	char *path;
-	char *init;
+    nfs_fh3 *handle = RT_NULL;
+    char *file;
+    char *path;
+    char *init;
+
+    init = path = rt_malloc(strlen(name)+1);
+    if (init == RT_NULL)
+        return RT_NULL;
+
+    memcpy(init, name, strlen(name)+1);
+
+    handle = rt_malloc(sizeof(nfs_fh3));
+    if (handle == RT_NULL)
+    {
+        rt_free(init);
 
-	init = path = rt_malloc(strlen(name)+1);
-	if (init == RT_NULL)
-		return RT_NULL;
+        return RT_NULL;
+    }
 
-	memcpy(init, name, strlen(name)+1);
+    if (path[0] == '/')
+    {
+        path ++;
+        copy_handle(handle, &nfs->root_handle);
+    }
+    else
+    {
+        copy_handle(handle, &nfs->current_handle);
+    }
 
-	handle = rt_malloc(sizeof(nfs_fh3));
-	if (handle == RT_NULL)
-	{
-		rt_free(init);
-		return RT_NULL;
-	}
+    while ((file = strtok_r(RT_NULL, "/", &path)) != RT_NULL)
+    {
+        LOOKUP3args args;
+        LOOKUP3res res;
+        memset(&res, 0, sizeof(res));
+        copy_handle(&args.what.dir, handle);
+        xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
+        args.what.name = file;
 
-	if (path[0] == '/')
-	{
-		path ++;
-		copy_handle(handle, &nfs->root_handle);
-	}
-	else
-	{
-		copy_handle(handle, &nfs->current_handle);
-	}
+        if (nfsproc3_lookup_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
+        {
+            rt_kprintf("Lookup failed\n");
+            rt_free(init);
+            rt_free(handle);
+            xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
 
-	while ((file = strtok_r(RT_NULL, "/", &path)) != RT_NULL)
-	{
-		LOOKUP3args args;
-		LOOKUP3res res;
-		memset(&res, 0, sizeof(res));
-		copy_handle(&args.what.dir, handle);
-		xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
-		args.what.name = file;
+            return RT_NULL;
+        }
+        else if (res.status != NFS3_OK)
+        {
+            rt_kprintf("Lookup failed: %d\n", res.status);
+            rt_free(init);
+            rt_free(handle);
+            xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
+            xdr_free((xdrproc_t)xdr_LOOKUP3res, (char *)&res);
 
-		if (nfsproc3_lookup_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
-		{
-			rt_kprintf("Lookup failed\n");
-			rt_free(init);
-			rt_free(handle);
-			xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
-			return RT_NULL;
-		}
-		else if (res.status != NFS3_OK)
-		{
-			rt_kprintf("Lookup failed: %d\n", res.status);
-			rt_free(init);
-			rt_free(handle);
-			xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
-			xdr_free((xdrproc_t)xdr_LOOKUP3res, (char *)&res);
-			return RT_NULL;
-		}
-		copy_handle(handle, &res.LOOKUP3res_u.resok.object);
-		xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
-		xdr_free((xdrproc_t)xdr_LOOKUP3res, (char *)&res);
-	}
+            return RT_NULL;
+        }
+        copy_handle(handle, &res.LOOKUP3res_u.resok.object);
+        xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
+        xdr_free((xdrproc_t)xdr_LOOKUP3res, (char *)&res);
+    }
 
-	rt_free(init);
-	return handle;
+    rt_free(init);
+
+    return handle;
 }
 
 static nfs_fh3 *get_dir_handle(struct nfs_filesystem *nfs, const char *name)
 {
-	nfs_fh3 *handle = RT_NULL;
-	char *file;
-	char *path;
-	char *init;
+    nfs_fh3 *handle = RT_NULL;
+    char *file;
+    char *path;
+    char *init;
+
+    init = path = rt_malloc(strlen(name)+1);
+    if (init == RT_NULL)
+        return RT_NULL;
+    memcpy(init, name, strlen(name)+1);
+
+    handle = rt_malloc(sizeof(nfs_fh3));
+    if (handle == RT_NULL)
+    {
+        rt_free(init);
 
-	init = path = rt_malloc(strlen(name)+1);
-	if (init == RT_NULL)
-		return RT_NULL;
-	memcpy(init, name, strlen(name)+1);
+        return RT_NULL;
+    }
 
-	handle = rt_malloc(sizeof(nfs_fh3));
-	if (handle == RT_NULL)
-	{
-		rt_free(init);
-		return RT_NULL;
-	}
+    if (path[0] == '/')
+    {
+        path ++;
+        copy_handle(handle, &nfs->root_handle);
+    }
+    else
+    {
+        copy_handle(handle, &nfs->current_handle);
+    }
 
-	if (path[0] == '/')
-	{
-		path ++;
-		copy_handle(handle, &nfs->root_handle);
-	}
-	else
-	{
-		copy_handle(handle, &nfs->current_handle);
-	}
+    while ((file = strtok_r(RT_NULL, "/", &path)) != RT_NULL && path != RT_NULL)
+    {
+        LOOKUP3args args;
+        LOOKUP3res res;
+        memset(&res, 0, sizeof(res));
+        copy_handle(&args.what.dir, handle);
+        xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
+        args.what.name = file;
 
-	while ((file = strtok_r(RT_NULL, "/", &path)) != RT_NULL && path != RT_NULL)
-	{
-		LOOKUP3args args;
-		LOOKUP3res res;
-		memset(&res, 0, sizeof(res));
-		copy_handle(&args.what.dir, handle);
-		xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
-		args.what.name = file;
+        if (nfsproc3_lookup_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
+        {
+            rt_kprintf("Lookup failed\n");
+            rt_free(init);
+            rt_free(handle);
+            xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
 
-		if (nfsproc3_lookup_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
-		{
-			rt_kprintf("Lookup failed\n");
-			rt_free(init);
-			rt_free(handle);
-			xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
-			return RT_NULL;
-		}
-		else if (res.status != NFS3_OK)
-		{
-			rt_kprintf("Lookup failed: %d\n", res.status);
-			rt_free(init);
-			rt_free(handle);
-			xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
-			xdr_free((xdrproc_t)xdr_LOOKUP3res, (char *)&res);
-			return RT_NULL;
-		}
-		copy_handle(handle, &res.LOOKUP3res_u.resok.object);
-		xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
-		xdr_free((xdrproc_t)xdr_LOOKUP3res, (char *)&res);
-	}
+            return RT_NULL;
+        }
+        else if (res.status != NFS3_OK)
+        {
+            rt_kprintf("Lookup failed: %d\n", res.status);
+            rt_free(init);
+            rt_free(handle);
+            xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
+            xdr_free((xdrproc_t)xdr_LOOKUP3res, (char *)&res);
 
-	rt_free(init);
-	return handle;
+            return RT_NULL;
+        }
+        copy_handle(handle, &res.LOOKUP3res_u.resok.object);
+        xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&args.what.dir);
+        xdr_free((xdrproc_t)xdr_LOOKUP3res, (char *)&res);
+    }
+
+    rt_free(init);
+
+    return handle;
 }
 
 static size_t nfs_get_filesize(struct nfs_filesystem *nfs, nfs_fh3 *handle)
 {
-	GETATTR3args args;
-	GETATTR3res res;
-	fattr3 *info;
-	size_t size;
+    GETATTR3args args;
+    GETATTR3res res;
+    fattr3 *info;
+    size_t size;
+
+    args.object = *handle;
 
-	args.object = *handle;
+    memset(&res, '\0', sizeof(res));
 
-	memset(&res, '\0', sizeof(res));
+    if ((nfsproc3_getattr_3(args, &res, nfs->nfs_client)!=RPC_SUCCESS) ||
+        res.status != NFS3_OK)
+    {
+        rt_kprintf("GetAttr failed: %d\n", res.status);
 
-	if ((nfsproc3_getattr_3(args, &res, nfs->nfs_client)!=RPC_SUCCESS) ||
-		res.status != NFS3_OK)
-	{
-		rt_kprintf("GetAttr failed: %d\n", res.status);
-		return 0;
-	}
+        return 0;
+    }
 
-	info = &res.GETATTR3res_u.resok.obj_attributes;
-	size = info->size;
-	xdr_free((xdrproc_t)xdr_GETATTR3res, (char *)&res);
-	
-	return size;
+    info = &res.GETATTR3res_u.resok.obj_attributes;
+    size = info->size;
+    xdr_free((xdrproc_t)xdr_GETATTR3res, (char *)&res);
+    
+    return size;
 }
 
 rt_bool_t nfs_is_directory(struct nfs_filesystem *nfs, const char *name)
 {
-	GETATTR3args args;
-	GETATTR3res res;
-	fattr3 *info;
-	nfs_fh3 *handle;
-	rt_bool_t result;
+    GETATTR3args args;
+    GETATTR3res res;
+    fattr3 *info;
+    nfs_fh3 *handle;
+    rt_bool_t result;
 
-	result = RT_FALSE;
-	handle = get_handle(nfs, name);
-	if (handle == RT_NULL)
-		return RT_FALSE;
+    result = RT_FALSE;
+    handle = get_handle(nfs, name);
+    if (handle == RT_NULL)
+        return RT_FALSE;
 
-	args.object = *handle;
+    args.object = *handle;
 
-	memset(&res, '\0', sizeof(res));
+    memset(&res, '\0', sizeof(res));
 
-	if (nfsproc3_getattr_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
-	{
-		rt_kprintf("GetAttr failed\n");
-		return RT_FALSE;
-	}
-	else if (res.status != NFS3_OK)
-	{
-		rt_kprintf("Getattr failed: %d\n", res.status);
-		return RT_FALSE;
-	}
+    if (nfsproc3_getattr_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
+    {
+        rt_kprintf("GetAttr failed\n");
 
-	info=&res.GETATTR3res_u.resok.obj_attributes;
+        return RT_FALSE;
+    }
+    else if (res.status != NFS3_OK)
+    {
+        rt_kprintf("Getattr failed: %d\n", res.status);
 
-	if (info->type == NFS3DIR)
-		result = RT_TRUE;
+        return RT_FALSE;
+    }
 
-	xdr_free((xdrproc_t)xdr_GETATTR3res, (char *)&res);
-	xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
-	rt_free(handle);
-	
-	return result;
+    info=&res.GETATTR3res_u.resok.obj_attributes;
+
+    if (info->type == NFS3DIR)
+        result = RT_TRUE;
+
+    xdr_free((xdrproc_t)xdr_GETATTR3res, (char *)&res);
+    xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
+    rt_free(handle);
+    
+    return result;
 }
 
 int nfs_create(struct nfs_filesystem *nfs, const char *name, mode_t mode)
 {
-	CREATE3args args;
-	CREATE3res res;
-	int ret = 0;
-	nfs_fh3 *handle;
+    CREATE3args args;
+    CREATE3res res;
+    int ret = 0;
+    nfs_fh3 *handle;
 
-	if (nfs->nfs_client == RT_NULL)
-	{
-		return -1;
-	}
+    if (nfs->nfs_client == RT_NULL)
+    {
+        return -1;
+    }
 
-	handle = get_dir_handle(nfs, name);
-	if (handle == RT_NULL)
-	{
-		return -1;
-	}
-	args.where.dir = *handle;
-	args.where.name = strrchr(name, '/') + 1;
-	if (args.where.name == RT_NULL)
-	{
-		args.where.name = (char *)name;
-	}
-	args.how.mode = GUARDED;
+    handle = get_dir_handle(nfs, name);
+    if (handle == RT_NULL)
+    {
+        return -1;
+    }
+    args.where.dir = *handle;
+    args.where.name = strrchr(name, '/') + 1;
+    if (args.where.name == RT_NULL)
+    {
+        args.where.name = (char *)name;
+    }
+    args.how.mode = GUARDED;
 
-	args.how.createhow3_u.obj_attributes.mode.set_it = TRUE;
-	args.how.createhow3_u.obj_attributes.mode.set_mode3_u.mode = mode;
-	args.how.createhow3_u.obj_attributes.uid.set_it = FALSE;
-	args.how.createhow3_u.obj_attributes.gid.set_it = FALSE;
-	args.how.createhow3_u.obj_attributes.size.set_it = FALSE;
-	args.how.createhow3_u.obj_attributes.atime.set_it = DONT_CHANGE;
-	args.how.createhow3_u.obj_attributes.mtime.set_it = DONT_CHANGE;
+    args.how.createhow3_u.obj_attributes.mode.set_it = TRUE;
+    args.how.createhow3_u.obj_attributes.mode.set_mode3_u.mode = mode;
+    args.how.createhow3_u.obj_attributes.uid.set_it = FALSE;
+    args.how.createhow3_u.obj_attributes.gid.set_it = FALSE;
+    args.how.createhow3_u.obj_attributes.size.set_it = FALSE;
+    args.how.createhow3_u.obj_attributes.atime.set_it = DONT_CHANGE;
+    args.how.createhow3_u.obj_attributes.mtime.set_it = DONT_CHANGE;
 
-	memset(&res, 0, sizeof(res));
+    memset(&res, 0, sizeof(res));
 
-	if (nfsproc3_create_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
-	{
-		rt_kprintf("Create failed\n");
-		ret = -1;
-	}
-	else if (res.status != NFS3_OK)
-	{
-		rt_kprintf("Create failed: %d\n", res.status);
-		ret = -1;
-	}
-	xdr_free((xdrproc_t)xdr_CREATE3res, (char *)&res);
-	xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
-	rt_free(handle);
+    if (nfsproc3_create_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
+    {
+        rt_kprintf("Create failed\n");
+        ret = -1;
+    }
+    else if (res.status != NFS3_OK)
+    {
+        rt_kprintf("Create failed: %d\n", res.status);
+        ret = -1;
+    }
+    xdr_free((xdrproc_t)xdr_CREATE3res, (char *)&res);
+    xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
+    rt_free(handle);
 
-	return ret;
+    return ret;
 }
 
 int nfs_mkdir(struct nfs_filesystem *nfs, const char *name, mode_t mode)
 {
-	MKDIR3args args;
-	MKDIR3res res;
-	int ret = 0;
-	nfs_fh3 *handle;
+    MKDIR3args args;
+    MKDIR3res res;
+    int ret = 0;
+    nfs_fh3 *handle;
 
-	if (nfs->nfs_client == RT_NULL)
-		return -1;
+    if (nfs->nfs_client == RT_NULL)
+        return -1;
 
-	handle = get_dir_handle(nfs, name);
-	if (handle == RT_NULL)
-		return -1;
+    handle = get_dir_handle(nfs, name);
+    if (handle == RT_NULL)
+        return -1;
 
-	args.where.dir = *handle;
-	args.where.name = strrchr(name, '/') + 1;
-	if (args.where.name == RT_NULL)
-	{
-		args.where.name = (char *)name;
-	}
+    args.where.dir = *handle;
+    args.where.name = strrchr(name, '/') + 1;
+    if (args.where.name == RT_NULL)
+    {
+        args.where.name = (char *)name;
+    }
 
-	args.attributes.mode.set_it = TRUE;
-	args.attributes.mode.set_mode3_u.mode = mode;
-	args.attributes.uid.set_it = FALSE;
-	args.attributes.gid.set_it = FALSE;
-	args.attributes.size.set_it = FALSE;
-	args.attributes.atime.set_it = DONT_CHANGE;
-	args.attributes.mtime.set_it = DONT_CHANGE;
+    args.attributes.mode.set_it = TRUE;
+    args.attributes.mode.set_mode3_u.mode = mode;
+    args.attributes.uid.set_it = FALSE;
+    args.attributes.gid.set_it = FALSE;
+    args.attributes.size.set_it = FALSE;
+    args.attributes.atime.set_it = DONT_CHANGE;
+    args.attributes.mtime.set_it = DONT_CHANGE;
 
-	memset(&res, 0, sizeof(res));
+    memset(&res, 0, sizeof(res));
 
-	if (nfsproc3_mkdir_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
-	{
-		rt_kprintf("Mkdir failed\n");
-		ret = -1;
-	}
-	else if (res.status != NFS3_OK)
-	{
-		rt_kprintf("Mkdir failed: %d\n", res.status);
-		ret = -1;
-	}
-	xdr_free((xdrproc_t)xdr_MKDIR3res, (char *)&res);
-	xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
-	rt_free(handle);
-	
-	return ret;
+    if (nfsproc3_mkdir_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
+    {
+        rt_kprintf("Mkdir failed\n");
+        ret = -1;
+    }
+    else if (res.status != NFS3_OK)
+    {
+        rt_kprintf("Mkdir failed: %d\n", res.status);
+        ret = -1;
+    }
+    xdr_free((xdrproc_t)xdr_MKDIR3res, (char *)&res);
+    xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
+    rt_free(handle);
+    
+    return ret;
 }
 
 /* mount(RT_NULL, "/mnt", "nfs", 0, "192.168.1.1:/export") */
 int nfs_mount(struct dfs_filesystem *fs, unsigned long rwflag, const void *data)
 {
-	mountres3 res;
-	struct nfs_filesystem *nfs;
+    mountres3 res;
+    struct nfs_filesystem *nfs;
 
-	nfs = (struct nfs_filesystem *)rt_malloc(sizeof(struct nfs_filesystem));
-	memset(nfs, 0, sizeof(struct nfs_filesystem));
+    nfs = (struct nfs_filesystem *)rt_malloc(sizeof(struct nfs_filesystem));
+    memset(nfs, 0, sizeof(struct nfs_filesystem));
 
-	if (nfs_parse_host_export((const char *)data, nfs->host, HOST_LENGTH,
-		nfs->export, EXPORT_PATH_LENGTH) < 0)
-	{
-		rt_kprintf("host or export path error\n");
-		goto __return;
-	}
+    if (nfs_parse_host_export((const char *)data, nfs->host, HOST_LENGTH,
+        nfs->export, EXPORT_PATH_LENGTH) < 0)
+    {
+        rt_kprintf("host or export path error\n");
+        goto __return;
+    }
 
-	nfs->mount_client=clnt_create((char *)nfs->host, MOUNT_PROGRAM, MOUNT_V3, "udp");
-	if (nfs->mount_client == RT_NULL)
-	{
-		rt_kprintf("create mount client failed\n");
-		goto __return;
-	}
+    nfs->mount_client=clnt_create((char *)nfs->host, MOUNT_PROGRAM, MOUNT_V3, "udp");
+    if (nfs->mount_client == RT_NULL)
+    {
+        rt_kprintf("create mount client failed\n");
+        goto __return;
+    }
 
-	memset(&res, '\0', sizeof(mountres3));
-	if (mountproc3_mnt_3((char *)nfs->export, &res, nfs->mount_client) != RPC_SUCCESS)
-	{
-		rt_kprintf("nfs mount failed\n");
-		goto __return;
-	}
-	else if (res.fhs_status != MNT3_OK)
-	{
-		rt_kprintf("nfs mount failed\n");
-		goto __return;
-	}
-	nfs->nfs_client=clnt_create((char *)nfs->host, NFS_PROGRAM, NFS_V3, "udp");
-	if (nfs->nfs_client == RT_NULL)
-	{
-		rt_kprintf("creat nfs client failed\n");
-		goto __return;
-	}
-	copy_handle(&nfs->root_handle, (nfs_fh3 *)&res.mountres3_u.mountinfo.fhandle);
-	copy_handle(&nfs->current_handle, &nfs->root_handle);
+    memset(&res, '\0', sizeof(mountres3));
+    if (mountproc3_mnt_3((char *)nfs->export, &res, nfs->mount_client) != RPC_SUCCESS)
+    {
+        rt_kprintf("nfs mount failed\n");
+        goto __return;
+    }
+    else if (res.fhs_status != MNT3_OK)
+    {
+        rt_kprintf("nfs mount failed\n");
+        goto __return;
+    }
+    nfs->nfs_client=clnt_create((char *)nfs->host, NFS_PROGRAM, NFS_V3, "udp");
+    if (nfs->nfs_client == RT_NULL)
+    {
+        rt_kprintf("creat nfs client failed\n");
+        goto __return;
+    }
+    copy_handle(&nfs->root_handle, (nfs_fh3 *)&res.mountres3_u.mountinfo.fhandle);
+    copy_handle(&nfs->current_handle, &nfs->root_handle);
 
-	nfs->nfs_client->cl_auth = authnone_create();
-	fs->data = nfs;
+    nfs->nfs_client->cl_auth = authnone_create();
+    fs->data = nfs;
 
-	return 0;
+    return 0;
 
 __return:
-	if (nfs != RT_NULL)
-	{
-		if (nfs->mount_client != RT_NULL)
-		{
-			clnt_destroy(nfs->mount_client);
-		}
-		if (nfs->nfs_client != RT_NULL)
-		{
-			if (nfs->nfs_client->cl_auth != RT_NULL)
-			{
-				auth_destroy(nfs->nfs_client->cl_auth);
-			}
-			clnt_destroy(nfs->nfs_client);
-		}
-		rt_free(nfs);
-	}
+    if (nfs != RT_NULL)
+    {
+        if (nfs->mount_client != RT_NULL)
+        {
+            clnt_destroy(nfs->mount_client);
+        }
+        if (nfs->nfs_client != RT_NULL)
+        {
+            if (nfs->nfs_client->cl_auth != RT_NULL)
+            {
+                auth_destroy(nfs->nfs_client->cl_auth);
+            }
+            clnt_destroy(nfs->nfs_client);
+        }
+        rt_free(nfs);
+    }
 
-	return -1;
+    return -1;
 }
 
 int nfs_unmount(struct dfs_filesystem *fs)
 {
-	struct nfs_filesystem *nfs;
+    struct nfs_filesystem *nfs;
+
+    RT_ASSERT(fs != RT_NULL);
+    RT_ASSERT(fs->data != RT_NULL);
+    nfs = (struct nfs_filesystem *)fs->data;
 
-	RT_ASSERT(fs != RT_NULL);
-	RT_ASSERT(fs->data != RT_NULL);
-	nfs = (struct nfs_filesystem *)fs->data;
+    if (nfs->mount_client != RT_NULL && 
+        mountproc3_umnt_3((char *)nfs->export, RT_NULL, nfs->mount_client) != RPC_SUCCESS)
+    {
+        rt_kprintf("umount failed\n");
 
-	if (nfs->mount_client != RT_NULL && 
-		mountproc3_umnt_3((char *)nfs->export, RT_NULL, nfs->mount_client) != RPC_SUCCESS)
-	{
-		rt_kprintf("umount failed\n");
-		return -1;
-	}
+        return -1;
+    }
 
-	/* destroy nfs client */
-	if (nfs->nfs_client != RT_NULL)
-	{
-		if (nfs->nfs_client->cl_auth != RT_NULL)
-		{
-			auth_destroy(nfs->nfs_client->cl_auth);
-			nfs->nfs_client->cl_auth = RT_NULL;
-		}
-		clnt_destroy(nfs->nfs_client);
-		nfs->nfs_client = RT_NULL;
-	}
+    /* destroy nfs client */
+    if (nfs->nfs_client != RT_NULL)
+    {
+        if (nfs->nfs_client->cl_auth != RT_NULL)
+        {
+            auth_destroy(nfs->nfs_client->cl_auth);
+            nfs->nfs_client->cl_auth = RT_NULL;
+        }
+        clnt_destroy(nfs->nfs_client);
+        nfs->nfs_client = RT_NULL;
+    }
 
-	/* destroy mount client */
-	if (nfs->mount_client != RT_NULL)
-	{
-		if (nfs->mount_client->cl_auth != RT_NULL)
-		{
-			auth_destroy(nfs->mount_client->cl_auth);
-			nfs->mount_client->cl_auth = RT_NULL;
-		}
-		clnt_destroy(nfs->mount_client);
-		nfs->mount_client = RT_NULL;
-	}
+    /* destroy mount client */
+    if (nfs->mount_client != RT_NULL)
+    {
+        if (nfs->mount_client->cl_auth != RT_NULL)
+        {
+            auth_destroy(nfs->mount_client->cl_auth);
+            nfs->mount_client->cl_auth = RT_NULL;
+        }
+        clnt_destroy(nfs->mount_client);
+        nfs->mount_client = RT_NULL;
+    }
 
-	rt_free(nfs);
-	fs->data = RT_NULL;
+    rt_free(nfs);
+    fs->data = RT_NULL;
 
-	return 0;
+    return 0;
 }
 
-int nfs_ioctl(struct dfs_fd *file, int cmd,	void *args)
+int nfs_ioctl(struct dfs_fd *file, int cmd, void *args)
 {
-	return -DFS_STATUS_ENOSYS;
+    return -DFS_STATUS_ENOSYS;
 }
 
 int nfs_read(struct dfs_fd *file, void *buf, rt_size_t count)
 {
-	READ3args args;
-	READ3res res;
-	ssize_t bytes, total=0;
-	nfs_file *fd;
-	struct nfs_filesystem *nfs;
+    READ3args args;
+    READ3res res;
+    ssize_t bytes, total=0;
+    nfs_file *fd;
+    struct nfs_filesystem *nfs;
 
-	if (file->type == FT_DIRECTORY)
-		return -DFS_STATUS_EISDIR;
+    if (file->type == FT_DIRECTORY)
+        return -DFS_STATUS_EISDIR;
 
-	fd = (nfs_file *)(file->data);
-	RT_ASSERT(fd != RT_NULL);
-	RT_ASSERT(file->fs != RT_NULL);
-	RT_ASSERT(file->fs->data != RT_NULL);
-	nfs = (struct nfs_filesystem *)file->fs->data;
+    fd = (nfs_file *)(file->data);
+    RT_ASSERT(fd != RT_NULL);
+    RT_ASSERT(file->fs != RT_NULL);
+    RT_ASSERT(file->fs->data != RT_NULL);
+    nfs = (struct nfs_filesystem *)file->fs->data;
 
-	if (nfs->nfs_client == RT_NULL)
-		return -1;
+    if (nfs->nfs_client == RT_NULL)
+        return -1;
 
-	/* end of file */
-	if (fd->eof == TRUE)
-		return 0;
+    /* end of file */
+    if (fd->eof == TRUE)
+        return 0;
 
-	args.file = fd->handle;
-	do {
-		args.offset = fd->offset;
-		args.count = count > DFS_NFS_MAX_MTU ? DFS_NFS_MAX_MTU : count;
-		count -= args.count;
+    args.file = fd->handle;
+    do {
+        args.offset = fd->offset;
+        args.count = count > DFS_NFS_MAX_MTU ? DFS_NFS_MAX_MTU : count;
+        count -= args.count;
 
-		memset(&res, 0, sizeof(res));
-		if (nfsproc3_read_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
-		{
-			rt_kprintf("Read failed\n");
-			total = 0;
-			break;
-		}
-		else if (res.status != NFS3_OK)
-		{
-			rt_kprintf("Read failed: %d\n", res.status);
-			total = 0;
-			break;
-		}
-		else
-		{
-			bytes = res.READ3res_u.resok.count;
-			total += bytes;
-			fd->offset += bytes;
-			/* update current position */
-			file->pos = fd->offset;
-			memcpy(buf, res.READ3res_u.resok.data.data_val, bytes);
-			buf = (void *)((char *)buf + args.count);
-			if (res.READ3res_u.resok.eof)
-			{
-				/* something should probably be here */
-				fd->eof = TRUE;
-				break;
-			}
-		}
-		xdr_free((xdrproc_t)xdr_READ3res, (char *)&res);
-	} while(count > 0);
+        memset(&res, 0, sizeof(res));
+        if (nfsproc3_read_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
+        {
+            rt_kprintf("Read failed\n");
+            total = 0;
+            break;
+        }
+        else if (res.status != NFS3_OK)
+        {
+            rt_kprintf("Read failed: %d\n", res.status);
+            total = 0;
+            break;
+        }
+        else
+        {
+            bytes = res.READ3res_u.resok.count;
+            total += bytes;
+            fd->offset += bytes;
+            /* update current position */
+            file->pos = fd->offset;
+            memcpy(buf, res.READ3res_u.resok.data.data_val, bytes);
+            buf = (void *)((char *)buf + args.count);
+            if (res.READ3res_u.resok.eof)
+            {
+                /* something should probably be here */
+                fd->eof = TRUE;
+                break;
+            }
+        }
+        xdr_free((xdrproc_t)xdr_READ3res, (char *)&res);
+    } while(count > 0);
 
-	xdr_free((xdrproc_t)xdr_READ3res, (char *)&res);
-	return total;
+    xdr_free((xdrproc_t)xdr_READ3res, (char *)&res);
+
+    return total;
 }
 
 int nfs_write(struct dfs_fd *file, const void *buf, rt_size_t count)
 {
-	WRITE3args args;
-	WRITE3res res;
-	ssize_t bytes, total=0;
-	nfs_file *fd;
-	struct nfs_filesystem *nfs;
+    WRITE3args args;
+    WRITE3res res;
+    ssize_t bytes, total=0;
+    nfs_file *fd;
+    struct nfs_filesystem *nfs;
+
+    if (file->type == FT_DIRECTORY)
+        return -DFS_STATUS_EISDIR;
 
-	if (file->type == FT_DIRECTORY)
-		return -DFS_STATUS_EISDIR;
+    fd = (nfs_file *)(file->data);
+    RT_ASSERT(fd != RT_NULL);
+    RT_ASSERT(file->fs != RT_NULL);
+    RT_ASSERT(file->fs->data != RT_NULL);
+    nfs = (struct nfs_filesystem *)file->fs->data;
 
-	fd = (nfs_file *)(file->data);
-	RT_ASSERT(fd != RT_NULL);
-	RT_ASSERT(file->fs != RT_NULL);
-	RT_ASSERT(file->fs->data != RT_NULL);
-	nfs = (struct nfs_filesystem *)file->fs->data;
+    if (nfs->nfs_client == RT_NULL)
+        return -1;
 
-	if (nfs->nfs_client == RT_NULL)
-		return -1;
+    args.file = fd->handle;
+    args.stable = FILE_SYNC;
 
-	args.file = fd->handle;
-	args.stable = FILE_SYNC;
+    do {
+        args.offset = fd->offset;
 
-	do {
-		args.offset = fd->offset;
+        memset(&res, 0, sizeof(res));
+        args.data.data_val=(void *)buf;
+        args.count = count > DFS_NFS_MAX_MTU ? DFS_NFS_MAX_MTU : count;
+        args.data.data_len = args.count;
+        count -= args.count;
+        buf = (const void *)((char *)buf + args.count);
 
-		memset(&res, 0, sizeof(res));
-		args.data.data_val=(void *)buf;
-		args.count = count > DFS_NFS_MAX_MTU ? DFS_NFS_MAX_MTU : count;
-		args.data.data_len = args.count;
-		count -= args.count;
-		buf = (const void *)((char *)buf + args.count);
+        if (nfsproc3_write_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
+        {
+            rt_kprintf("Write failed\n");
+            total = 0;
+            break;
+        }
+        else if (res.status != NFS3_OK)
+        {
+            rt_kprintf("Write failed: %d\n", res.status);
+            total = 0;
+            break;
+        }
+        else
+        {
+            bytes = res.WRITE3res_u.resok.count;
+            fd->offset += bytes;
+            total += bytes;
+            /* update current position */
+            file->pos = fd->offset;
+            /* todo: update file size */
+        }
+        xdr_free((xdrproc_t)xdr_WRITE3res, (char *)&res);
+    } while (count > 0);
 
-		if (nfsproc3_write_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
-		{
-			rt_kprintf("Write failed\n");
-			total = 0;
-			break;
-		}
-		else if (res.status != NFS3_OK)
-		{
-			rt_kprintf("Write failed: %d\n", res.status);
-			total = 0;
-			break;
-		}
-		else
-		{
-			bytes = res.WRITE3res_u.resok.count;
-			fd->offset += bytes;
-			total += bytes;
-			/* update current position */
-			file->pos = fd->offset;
-			/* todo: update file size */
-		}
-		xdr_free((xdrproc_t)xdr_WRITE3res, (char *)&res);
-	} while (count > 0);
+    xdr_free((xdrproc_t)xdr_WRITE3res, (char *)&res);
 
-	xdr_free((xdrproc_t)xdr_WRITE3res, (char *)&res);
-	return total;
+    return total;
 }
 
 int nfs_lseek(struct dfs_fd *file, rt_off_t offset)
 {
-	nfs_file *fd;
+    nfs_file *fd;
+
+    if (file->type == FT_DIRECTORY)
+        return -DFS_STATUS_EISDIR;
 
-	if (file->type == FT_DIRECTORY)
-		return -DFS_STATUS_EISDIR;
+    fd = (nfs_file *)(file->data);
+    RT_ASSERT(fd != RT_NULL);
 
-	fd = (nfs_file *)(file->data);
-	RT_ASSERT(fd != RT_NULL);
+    if (offset <= fd->size)
+    {
+        fd->offset = offset;
 
-	if (offset <= fd->size)
-	{
-		fd->offset = offset;
-		return offset;
-	}
+        return offset;
+    }
 
-	return -DFS_STATUS_EIO;
+    return -DFS_STATUS_EIO;
 }
 
 int nfs_close(struct dfs_fd *file)
 {
-	if (file->type == FT_DIRECTORY)
-	{
-		struct nfs_dir *dir;
+    if (file->type == FT_DIRECTORY)
+    {
+        struct nfs_dir *dir;
 
-		dir = (struct nfs_dir *)file->data;
-		xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&dir->handle);
-		xdr_free((xdrproc_t)xdr_READDIR3res, (char *)&dir->res);
-		rt_free(dir);
-	}
-	else if (file->type == FT_REGULAR)
-	{
-		struct nfs_file *fd;
+        dir = (struct nfs_dir *)file->data;
+        xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&dir->handle);
+        xdr_free((xdrproc_t)xdr_READDIR3res, (char *)&dir->res);
+        rt_free(dir);
+    }
+    else if (file->type == FT_REGULAR)
+    {
+        struct nfs_file *fd;
 
-		fd = (struct nfs_file *)file->data;
+        fd = (struct nfs_file *)file->data;
 
-		xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&fd->handle);
-		rt_free(fd);
-	}
+        xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)&fd->handle);
+        rt_free(fd);
+    }
 
-	file->data = RT_NULL;
-	return 0;
+    file->data = RT_NULL;
+    return 0;
 }
 
 int nfs_open(struct dfs_fd *file)
 {
-	struct nfs_filesystem *nfs;
+    struct nfs_filesystem *nfs;
 
-	RT_ASSERT(file->fs != RT_NULL);
-	RT_ASSERT(file->fs->data != RT_NULL);
-	nfs = (struct nfs_filesystem *)file->fs->data;
+    RT_ASSERT(file->fs != RT_NULL);
+    RT_ASSERT(file->fs->data != RT_NULL);
+    nfs = (struct nfs_filesystem *)file->fs->data;
 
-	if (file->flags & DFS_O_DIRECTORY)
-	{
-		nfs_dir *dir;
-	
-		if (file->flags & DFS_O_CREAT)
-		{
-			if (nfs_mkdir(nfs, file->path, 0755) < 0)
-				return -1;
-		}
+    if (file->flags & DFS_O_DIRECTORY)
+    {
+        nfs_dir *dir;
+    
+        if (file->flags & DFS_O_CREAT)
+        {
+            if (nfs_mkdir(nfs, file->path, 0755) < 0)
+                return -1;
+        }
 
-		/* open directory */
-		dir = nfs_opendir(nfs, file->path);
-		file->data = dir;
-	}
-	else
-	{
-		nfs_file *fp;
-		nfs_fh3 *handle;
+        /* open directory */
+        dir = nfs_opendir(nfs, file->path);
+        file->data = dir;
+    }
+    else
+    {
+        nfs_file *fp;
+        nfs_fh3 *handle;
 
-		/* create file */
-		if (file->flags & DFS_O_CREAT)
-		{
-			if (nfs_create(nfs, file->path, 0664) < 0) return -1;
-		}
+        /* create file */
+        if (file->flags & DFS_O_CREAT)
+        {
+            if (nfs_create(nfs, file->path, 0664) < 0)
+                return -1;
+        }
 
-		/* open file (get file handle ) */
-		fp = rt_malloc(sizeof(nfs_file));
-		if (fp == RT_NULL)
-			return -1;
+        /* open file (get file handle ) */
+        fp = rt_malloc(sizeof(nfs_file));
+        if (fp == RT_NULL)
+            return -1;
 
-		handle = get_handle(nfs, file->path);
-		if (handle == RT_NULL)
-		{
-			rt_free(fp);
-			return -1;
-		}
+        handle = get_handle(nfs, file->path);
+        if (handle == RT_NULL)
+        {
+            rt_free(fp);
 
-		/* get size of file */
-		fp->size = nfs_get_filesize(nfs, handle);
-		fp->offset = 0;
-		fp->eof = FALSE;
+            return -1;
+        }
 
-		copy_handle(&fp->handle, handle);
-		xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
-		rt_free(handle);
+        /* get size of file */
+        fp->size = nfs_get_filesize(nfs, handle);
+        fp->offset = 0;
+        fp->eof = FALSE;
 
-		if (file->flags & DFS_O_APPEND)
-		{
-			fp->offset = fp->size;
-		}
+        copy_handle(&fp->handle, handle);
+        xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
+        rt_free(handle);
 
-		/* set private file */
-		file->data = fp;
-	}
+        if (file->flags & DFS_O_APPEND)
+        {
+            fp->offset = fp->size;
+        }
 
-	return 0;
+        /* set private file */
+        file->data = fp;
+    }
+
+    return 0;
 }
 
 int nfs_stat(struct dfs_filesystem *fs, const char *path, struct stat *st)
 {
-	GETATTR3args args;
-	GETATTR3res res;
-	fattr3 *info;
-	nfs_fh3 *handle;
-	struct nfs_filesystem *nfs;
+    GETATTR3args args;
+    GETATTR3res res;
+    fattr3 *info;
+    nfs_fh3 *handle;
+    struct nfs_filesystem *nfs;
 
-	RT_ASSERT(fs != RT_NULL);
-	RT_ASSERT(fs->data != RT_NULL);
-	nfs = (struct nfs_filesystem *)fs->data;
+    RT_ASSERT(fs != RT_NULL);
+    RT_ASSERT(fs->data != RT_NULL);
+    nfs = (struct nfs_filesystem *)fs->data;
 
-	handle = get_handle(nfs, path);
-	if (handle == RT_NULL)
-		return -1;
+    handle = get_handle(nfs, path);
+    if (handle == RT_NULL)
+        return -1;
 
-	args.object = *handle;
+    args.object = *handle;
 
-	memset(&res, '\0', sizeof(res));
+    memset(&res, '\0', sizeof(res));
 
-	if (nfsproc3_getattr_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
-	{
-		rt_kprintf("GetAttr failed\n");
-		return -1;
-	}
-	else if (res.status != NFS3_OK)
-	{
-		rt_kprintf("Getattr failed: %d\n", res.status);
-		return -1;
-	}
+    if (nfsproc3_getattr_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
+    {
+        rt_kprintf("GetAttr failed\n");
+        return -1;
+    }
+    else if (res.status != NFS3_OK)
+    {
+        rt_kprintf("Getattr failed: %d\n", res.status);
+        return -1;
+    }
 
-	info = &res.GETATTR3res_u.resok.obj_attributes;
+    info = &res.GETATTR3res_u.resok.obj_attributes;
 
-	st->st_dev = 0;
+    st->st_dev = 0;
 
-	st->st_mode = DFS_S_IFREG | DFS_S_IRUSR | DFS_S_IRGRP | DFS_S_IROTH |
-	DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH;
-	if (info->type == NFS3DIR)
-	{
-		st->st_mode &= ~DFS_S_IFREG;
-		st->st_mode |= DFS_S_IFDIR | DFS_S_IXUSR | DFS_S_IXGRP | DFS_S_IXOTH;
-	}
+    st->st_mode = DFS_S_IFREG | DFS_S_IRUSR | DFS_S_IRGRP | DFS_S_IROTH |
+    DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH;
+    if (info->type == NFS3DIR)
+    {
+        st->st_mode &= ~DFS_S_IFREG;
+        st->st_mode |= DFS_S_IFDIR | DFS_S_IXUSR | DFS_S_IXGRP | DFS_S_IXOTH;
+    }
 
-	st->st_size  = info->size;
-	st->st_mtime = info->mtime.seconds;
-	st->st_blksize = 512;
+    st->st_size  = info->size;
+    st->st_mtime = info->mtime.seconds;
+    st->st_blksize = 512;
 
-	xdr_free((xdrproc_t)xdr_GETATTR3res, (char *)&res);
-	xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
-	rt_free(handle);
+    xdr_free((xdrproc_t)xdr_GETATTR3res, (char *)&res);
+    xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
+    rt_free(handle);
 
-	return 0;
+    return 0;
 }
 
 nfs_dir *nfs_opendir(struct nfs_filesystem *nfs, const char *path)
 {
-	nfs_dir *dir;
-	nfs_fh3 *handle;
+    nfs_dir *dir;
+    nfs_fh3 *handle;
+
+    dir = rt_malloc(sizeof(nfs_dir));
+    if (dir == RT_NULL)
+    {
+        return RT_NULL;
+    }
 
-	dir = rt_malloc(sizeof(nfs_dir));
-	if (dir == RT_NULL)
-	{
-		return RT_NULL;
-	}
+    handle = get_handle(nfs, path);
+    if (handle == RT_NULL)
+    {
+        rt_free(dir);
 
-	handle = get_handle(nfs, path);
-	if (handle == RT_NULL)
-	{
-		rt_free(dir);
-		return RT_NULL;
-	}
+        return RT_NULL;
+    }
 
-	copy_handle(&dir->handle, handle);
-	xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
-	rt_free(handle);
+    copy_handle(&dir->handle, handle);
+    xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
+    rt_free(handle);
 
-	dir->cookie = 0;
-	memset(&dir->cookieverf, '\0', sizeof(cookieverf3));
-	dir->entry = RT_NULL;
-	dir->eof = FALSE;
-	memset(&dir->res, '\0', sizeof(dir->res));
+    dir->cookie = 0;
+    memset(&dir->cookieverf, '\0', sizeof(cookieverf3));
+    dir->entry = RT_NULL;
+    dir->eof = FALSE;
+    memset(&dir->res, '\0', sizeof(dir->res));
 
-	return dir;
+    return dir;
 }
 
 char *nfs_readdir(struct nfs_filesystem *nfs, nfs_dir *dir)
 {
-	static char name[NAME_MAX];
+    static char name[NAME_MAX];
+
+    if (nfs->nfs_client == RT_NULL || dir == RT_NULL)
+        return RT_NULL;
 
-	if (nfs->nfs_client == RT_NULL || dir == RT_NULL)
-		return RT_NULL;
+    if (dir->entry == RT_NULL)
+    {
+        READDIR3args args;
 
-	if (dir->entry == RT_NULL)
-	{
-		READDIR3args args;
+        xdr_free((xdrproc_t)xdr_READDIR3res, (char *)&dir->res);
+        memset(&dir->res, '\0', sizeof(dir->res));
 
-		xdr_free((xdrproc_t)xdr_READDIR3res, (char *)&dir->res);
-		memset(&dir->res, '\0', sizeof(dir->res));
+        args.dir = dir->handle;
+        args.cookie = dir->cookie;
+        memcpy(&args.cookieverf, &dir->cookieverf, sizeof(cookieverf3));
+        args.count = 1024;
 
-		args.dir = dir->handle;
-		args.cookie = dir->cookie;
-		memcpy(&args.cookieverf, &dir->cookieverf, sizeof(cookieverf3));
-		args.count = 1024;
+        if (nfsproc3_readdir_3(args, &dir->res, nfs->nfs_client) != RPC_SUCCESS)
+        {
+            rt_kprintf("Readdir failed\n");
 
-		if (nfsproc3_readdir_3(args, &dir->res, nfs->nfs_client) != RPC_SUCCESS)
-		{
-			rt_kprintf("Readdir failed\n");
-			return RT_NULL;
-		}
-		else if (dir->res.status != NFS3_OK)
-		{
-			rt_kprintf("Readdir failed: %d\n", dir->res.status);
-			return RT_NULL;
-		}
+            return RT_NULL;
+        }
+        else if (dir->res.status != NFS3_OK)
+        {
+            rt_kprintf("Readdir failed: %d\n", dir->res.status);
 
-		memcpy(&dir->cookieverf, &dir->res.READDIR3res_u.resok.cookieverf, sizeof(cookieverf3));
-		dir->eof = dir->res.READDIR3res_u.resok.reply.eof;
-		dir->entry = dir->res.READDIR3res_u.resok.reply.entries;
-	}
-	if (dir->eof == TRUE && dir->entry == RT_NULL)
-		return RT_NULL;
+            return RT_NULL;
+        }
 
-	dir->cookie = dir->entry->cookie;
-	strncpy(name, dir->entry->name, NAME_MAX-1);
-	dir->entry = dir->entry->nextentry;
-	name[NAME_MAX - 1] = '\0';
-	return name;
+        memcpy(&dir->cookieverf, &dir->res.READDIR3res_u.resok.cookieverf, sizeof(cookieverf3));
+        dir->eof = dir->res.READDIR3res_u.resok.reply.eof;
+        dir->entry = dir->res.READDIR3res_u.resok.reply.entries;
+    }
+    if (dir->eof == TRUE && dir->entry == RT_NULL)
+        return RT_NULL;
+
+    dir->cookie = dir->entry->cookie;
+    strncpy(name, dir->entry->name, NAME_MAX-1);
+    dir->entry = dir->entry->nextentry;
+    name[NAME_MAX - 1] = '\0';
+
+    return name;
 }
 
 int nfs_unlink(struct dfs_filesystem *fs, const char *path)
 {
-	int ret = 0;
-	struct nfs_filesystem *nfs;
+    int ret = 0;
+    struct nfs_filesystem *nfs;
 
-	RT_ASSERT(fs != RT_NULL);
-	RT_ASSERT(fs->data != RT_NULL);
-	nfs = (struct nfs_filesystem *)fs->data;
+    RT_ASSERT(fs != RT_NULL);
+    RT_ASSERT(fs->data != RT_NULL);
+    nfs = (struct nfs_filesystem *)fs->data;
 
-	if (nfs_is_directory(nfs, path) == RT_FALSE)
-	{
-		/* remove file */
-		REMOVE3args args;
-		REMOVE3res res;
-		nfs_fh3 *handle;
+    if (nfs_is_directory(nfs, path) == RT_FALSE)
+    {
+        /* remove file */
+        REMOVE3args args;
+        REMOVE3res res;
+        nfs_fh3 *handle;
 
-		handle = get_dir_handle(nfs, path);
-		if (handle == RT_NULL)
-			return -1;
+        handle = get_dir_handle(nfs, path);
+        if (handle == RT_NULL)
+            return -1;
 
-		args.object.dir = *handle;
-		args.object.name = strrchr(path, '/') + 1;
-		if (args.object.name == RT_NULL)
-		{
-			args.object.name = (char *)path;
-		}
+        args.object.dir = *handle;
+        args.object.name = strrchr(path, '/') + 1;
+        if (args.object.name == RT_NULL)
+        {
+            args.object.name = (char *)path;
+        }
 
-		memset(&res, 0, sizeof(res));
+        memset(&res, 0, sizeof(res));
 
-		if (nfsproc3_remove_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
-		{
-			rt_kprintf("Remove failed\n");
-			ret = -1;
-		}
-		else if (res.status != NFS3_OK)
-		{
-			rt_kprintf("Remove failed: %d\n", res.status);
-			ret = -1;
-		}
-		xdr_free((xdrproc_t)xdr_REMOVE3res, (char *)&res);
-		xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
-		rt_free(handle);
-	}
-	else
-	{
-		/* remove directory */
-		RMDIR3args args;
-		RMDIR3res res;
-		nfs_fh3 *handle;
+        if (nfsproc3_remove_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
+        {
+            rt_kprintf("Remove failed\n");
+            ret = -1;
+        }
+        else if (res.status != NFS3_OK)
+        {
+            rt_kprintf("Remove failed: %d\n", res.status);
+            ret = -1;
+        }
+        xdr_free((xdrproc_t)xdr_REMOVE3res, (char *)&res);
+        xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
+        rt_free(handle);
+    }
+    else
+    {
+        /* remove directory */
+        RMDIR3args args;
+        RMDIR3res res;
+        nfs_fh3 *handle;
 
-		handle = get_dir_handle(nfs, path);
-		if (handle == RT_NULL)
-			return -1;
+        handle = get_dir_handle(nfs, path);
+        if (handle == RT_NULL)
+            return -1;
 
-		args.object.dir = *handle;
-		args.object.name = strrchr(path, '/') + 1;
-		if (args.object.name == RT_NULL)
-		{
-			args.object.name = (char *)path;
-		}
+        args.object.dir = *handle;
+        args.object.name = strrchr(path, '/') + 1;
+        if (args.object.name == RT_NULL)
+        {
+            args.object.name = (char *)path;
+        }
 
-		memset(&res, 0, sizeof(res));
+        memset(&res, 0, sizeof(res));
 
-		if (nfsproc3_rmdir_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
-		{
-			rt_kprintf("Rmdir failed\n");
-			ret = -1;
-		}
-		else if (res.status != NFS3_OK)
-		{
-			rt_kprintf("Rmdir failed: %d\n", res.status);
-			ret = -1;
-		}
+        if (nfsproc3_rmdir_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
+        {
+            rt_kprintf("Rmdir failed\n");
+            ret = -1;
+        }
+        else if (res.status != NFS3_OK)
+        {
+            rt_kprintf("Rmdir failed: %d\n", res.status);
+            ret = -1;
+        }
 
-		xdr_free((xdrproc_t)xdr_RMDIR3res, (char *)&res);
-		xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
-		rt_free(handle);	
-	}
+        xdr_free((xdrproc_t)xdr_RMDIR3res, (char *)&res);
+        xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)handle);
+        rt_free(handle);    
+    }
 
-	return ret;
+    return ret;
 }
 
 int nfs_rename(struct dfs_filesystem *fs, const char *src, const char *dest)
 {
-	RENAME3args args;
-	RENAME3res res;
-	nfs_fh3 *sHandle;
-	nfs_fh3 *dHandle;
-	int ret = 0;
-	struct nfs_filesystem *nfs;
+    RENAME3args args;
+    RENAME3res res;
+    nfs_fh3 *sHandle;
+    nfs_fh3 *dHandle;
+    int ret = 0;
+    struct nfs_filesystem *nfs;
+
+    RT_ASSERT(fs != RT_NULL);
+    RT_ASSERT(fs->data != RT_NULL);
+    nfs = (struct nfs_filesystem *)fs->data;
 
-	RT_ASSERT(fs != RT_NULL);
-	RT_ASSERT(fs->data != RT_NULL);
-	nfs = (struct nfs_filesystem *)fs->data;
+    if (nfs->nfs_client == RT_NULL)
+        return -1;
 
-	if (nfs->nfs_client == RT_NULL)
-		return -1;
+    sHandle = get_dir_handle(nfs, src);
+    if (sHandle == RT_NULL)
+        return -1;
 
-	sHandle = get_dir_handle(nfs, src);
-	if (sHandle == RT_NULL)
-		return -1;
+    dHandle = get_dir_handle(nfs, dest);
+    if (dHandle == RT_NULL)
+        return -1;
 
-	dHandle = get_dir_handle(nfs, dest);
-	if (dHandle == RT_NULL)
-		return -1;
+    args.from.dir = *sHandle;
+    args.from.name = strrchr(src, '/') + 1;
+    if (args.from.name == RT_NULL)
+        args.from.name = (char *)src;
 
-	args.from.dir = *sHandle;
-	args.from.name = strrchr(src, '/') + 1;
-	if (args.from.name == RT_NULL)
-		args.from.name = (char *)src;
+    args.to.dir = *dHandle;
+    args.to.name = strrchr(src, '/') + 1;
+    if (args.to.name == RT_NULL)
+        args.to.name = (char *)dest;
 
-	args.to.dir = *dHandle;
-	args.to.name = strrchr(src, '/') + 1;
-	if (args.to.name == RT_NULL)
-		args.to.name = (char *)dest;
+    memset(&res, '\0', sizeof(res));
 
-	memset(&res, '\0', sizeof(res));
+    if (nfsproc3_rename_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
+    {
+        rt_kprintf("Rename failed\n");
+        ret = -1;
+    }
+    else if (res.status != NFS3_OK)
+    {
+        rt_kprintf("Rename failed: %d\n", res.status);
+        ret = -1;
+    }
 
-	if (nfsproc3_rename_3(args, &res, nfs->nfs_client) != RPC_SUCCESS)
-	{
-		rt_kprintf("Rename failed\n");
-		ret = -1;
-	}
-	else if (res.status != NFS3_OK)
-	{
-		rt_kprintf("Rename failed: %d\n", res.status);
-		ret = -1;
-	}
+    xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)sHandle);
+    xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)dHandle);
+    xdr_free((xdrproc_t)xdr_RENAME3res, (char *)&res);
 
-	xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)sHandle);
-	xdr_free((xdrproc_t)xdr_nfs_fh3, (char *)dHandle);
-	xdr_free((xdrproc_t)xdr_RENAME3res, (char *)&res);
-	return ret;
+    return ret;
 }
 
 int nfs_getdents(struct dfs_fd *file, struct dirent *dirp, rt_uint32_t count)
 {
-	nfs_dir *dir;
-	rt_uint32_t index;
-	struct dirent *d;
-	struct nfs_filesystem *nfs;
-	char *name;
+    nfs_dir *dir;
+    rt_uint32_t index;
+    struct dirent *d;
+    struct nfs_filesystem *nfs;
+    char *name;
 
-	dir = (nfs_dir *)(file->data);
-	RT_ASSERT(dir != RT_NULL);
-	RT_ASSERT(file->fs != RT_NULL);
-	RT_ASSERT(file->fs->data != RT_NULL);
-	nfs = (struct nfs_filesystem *)file->fs->data;
+    dir = (nfs_dir *)(file->data);
+    RT_ASSERT(dir != RT_NULL);
+    RT_ASSERT(file->fs != RT_NULL);
+    RT_ASSERT(file->fs->data != RT_NULL);
+    nfs = (struct nfs_filesystem *)file->fs->data;
 
-	/* make integer count */
-	count = (count / sizeof(struct dirent)) * sizeof(struct dirent);
-	if (count == 0)
-		return -DFS_STATUS_EINVAL;
+    /* make integer count */
+    count = (count / sizeof(struct dirent)) * sizeof(struct dirent);
+    if (count == 0)
+        return -DFS_STATUS_EINVAL;
 
-	index = 0;
-	while (1)
-	{
-		char *fn;
+    index = 0;
+    while (1)
+    {
+        char *fn;
 
-		d = dirp + index;
+        d = dirp + index;
 
-		name = nfs_readdir(nfs, dir);
-		if (name == RT_NULL)
-			break;
+        name = nfs_readdir(nfs, dir);
+        if (name == RT_NULL)
+            break;
 
-		d->d_type = DFS_DT_REG;
+        d->d_type = DFS_DT_REG;
 
-		d->d_namlen = rt_strlen(name);
-		d->d_reclen = (rt_uint16_t)sizeof(struct dirent);
-		rt_strncpy(d->d_name, name, rt_strlen(name) + 1);
+        d->d_namlen = rt_strlen(name);
+        d->d_reclen = (rt_uint16_t)sizeof(struct dirent);
+        rt_strncpy(d->d_name, name, rt_strlen(name) + 1);
 
-		index ++;
-		if (index * sizeof(struct dirent) >= count)
-			break;
-	}
+        index ++;
+        if (index * sizeof(struct dirent) >= count)
+            break;
+    }
 
-	return index * sizeof(struct dirent);
+    return index * sizeof(struct dirent);
 }
 
 static const struct dfs_filesystem_operation _nfs = 
 {
-	"nfs",
-	DFS_FS_FLAG_DEFAULT,	
-	nfs_mount,
-	nfs_unmount,
-	RT_NULL, /* mkfs */
-	RT_NULL, /* statfs */
-	nfs_open,
-	nfs_close,
-	nfs_ioctl,
-	nfs_read,
-	nfs_write,
-	RT_NULL, /* flush */
-	nfs_lseek,
-	nfs_getdents,
-	nfs_unlink, 
-	nfs_stat,
-	nfs_rename,
+    "nfs",
+    DFS_FS_FLAG_DEFAULT,    
+    nfs_mount,
+    nfs_unmount,
+    RT_NULL, /* mkfs */
+    RT_NULL, /* statfs */
+    nfs_open,
+    nfs_close,
+    nfs_ioctl,
+    nfs_read,
+    nfs_write,
+    RT_NULL, /* flush */
+    nfs_lseek,
+    nfs_getdents,
+    nfs_unlink, 
+    nfs_stat,
+    nfs_rename,
 };
 
 int nfs_init(void)
 {
-	/* register fatfs file system */
-	dfs_register(&_nfs);
+    /* register fatfs file system */
+    dfs_register(&_nfs);
 
-	return RT_EOK;
+    return RT_EOK;
 }
 INIT_FS_EXPORT(nfs_init);
diff --git a/components/dfs/filesystems/nfs/dfs_nfs.h b/components/dfs/filesystems/nfs/dfs_nfs.h
index d45af577de..adc36f82d5 100644
--- a/components/dfs/filesystems/nfs/dfs_nfs.h
+++ b/components/dfs/filesystems/nfs/dfs_nfs.h
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/ramfs/dfs_ramfs.c b/components/dfs/filesystems/ramfs/dfs_ramfs.c
index c6731ed89a..65c662ae44 100644
--- a/components/dfs/filesystems/ramfs/dfs_ramfs.c
+++ b/components/dfs/filesystems/ramfs/dfs_ramfs.c
@@ -1,9 +1,21 @@
 /*
  * File      : dfs_ramfs.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2011, Shanghai Real-Thread Technology Co., Ltd
+ * This file is part of Device File System in RT-Thread RTOS
+ * COPYRIGHT (C) 2004-2013, RT-Thread Development Team
  *
- * All rights reserved.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
@@ -17,11 +29,14 @@
 #include <dfs_fs.h>
 #include "dfs_ramfs.h"
 
-int dfs_ramfs_mount(struct dfs_filesystem *fs, unsigned long rwflag, const void *data)
+int dfs_ramfs_mount(struct dfs_filesystem *fs,
+                    unsigned long          rwflag,
+                    const void            *data)
 {
     struct dfs_ramfs* ramfs;
 
-    if (data == RT_NULL) return -DFS_STATUS_EIO;
+    if (data == RT_NULL)
+        return -DFS_STATUS_EIO;
 
     ramfs = (struct dfs_ramfs*) data;
     fs->data = ramfs;
@@ -55,7 +70,9 @@ int dfs_ramfs_ioctl(struct dfs_fd *file, int cmd, void *args)
     return -DFS_STATUS_EIO;
 }
 
-struct ramfs_dirent *dfs_ramfs_lookup(struct dfs_ramfs* ramfs, const char *path, rt_size_t *size)
+struct ramfs_dirent *dfs_ramfs_lookup(struct dfs_ramfs *ramfs,
+                                      const char       *path,
+                                      rt_size_t        *size)
 {
     const char *subpath;
     struct ramfs_dirent *dirent;
@@ -65,16 +82,18 @@ struct ramfs_dirent *dfs_ramfs_lookup(struct dfs_ramfs* ramfs, const char *path,
     if (! *subpath) /* is root directory */
     {
         *size = 0;
+
         return &(ramfs->root);
     }
 
     for (dirent = rt_list_entry(ramfs->root.list.next, struct ramfs_dirent, list);
-            dirent != &(ramfs->root);
-            dirent = rt_list_entry(dirent->list.next, struct ramfs_dirent, list))
+         dirent != &(ramfs->root);
+         dirent = rt_list_entry(dirent->list.next, struct ramfs_dirent, list))
     {
         if (rt_strcmp(dirent->name, subpath) == 0)
         {
             *size = dirent->size;
+
             return dirent;
         }
     }
@@ -122,6 +141,7 @@ int dfs_ramfs_write(struct dfs_fd *fd, const void *buf, rt_size_t count)
         if (ptr == RT_NULL)
         {
             rt_set_errno(-RT_ENOMEM);
+
             return 0;
         }
 
@@ -145,6 +165,7 @@ int dfs_ramfs_lseek(struct dfs_fd *file, rt_off_t offset)
     if (offset <= (rt_off_t)file->size)
     {
         file->pos = offset;
+
         return file->pos;
     }
 
@@ -154,6 +175,7 @@ int dfs_ramfs_lseek(struct dfs_fd *file, rt_off_t offset)
 int dfs_ramfs_close(struct dfs_fd *file)
 {
     file->data = RT_NULL;
+
     return DFS_STATUS_OK;
 }
 
@@ -195,8 +217,7 @@ int dfs_ramfs_open(struct dfs_fd *file)
 
         if (dirent == RT_NULL)
         {
-            if (file->flags & DFS_O_CREAT ||
-                file->flags & DFS_O_WRONLY)
+            if (file->flags & DFS_O_CREAT || file->flags & DFS_O_WRONLY)
             {
                 char *name_ptr;
 
@@ -209,7 +230,8 @@ int dfs_ramfs_open(struct dfs_fd *file)
 
                 /* remove '/' separator */
                 name_ptr = file->path;
-                while (*name_ptr == '/' && *name_ptr) name_ptr ++;
+                while (*name_ptr == '/' && *name_ptr)
+                    name_ptr ++;
                 strncpy(dirent->name, name_ptr, RAMFS_NAME_MAX);
 
                 rt_list_init(&(dirent->list));
@@ -218,7 +240,8 @@ int dfs_ramfs_open(struct dfs_fd *file)
                 /* add to the root directory */
                 rt_list_insert_after(&(ramfs->root.list), &(dirent->list));
             }
-            else return -DFS_STATUS_ENOENT;
+            else
+                return -DFS_STATUS_ENOENT;
         }
 
         /* Creates a new file. If the file is existing, it is truncated and overwritten. */
@@ -282,8 +305,8 @@ int dfs_ramfs_getdents(struct dfs_fd *file, struct dirent *dirp, rt_uint32_t cou
     index = 0;
     count = 0;
     for (dirent = rt_list_entry(dirent->list.next, struct ramfs_dirent, list);
-            dirent != &(ramfs->root) && index < end;
-            dirent = rt_list_entry(dirent->list.next, struct ramfs_dirent, list))
+         dirent != &(ramfs->root) && index < end;
+         dirent = rt_list_entry(dirent->list.next, struct ramfs_dirent, list))
     {
         if (index >= (rt_size_t)file->pos)
         {
@@ -312,7 +335,8 @@ int dfs_ramfs_unlink(struct dfs_filesystem *fs, const char *path)
     RT_ASSERT(ramfs != RT_NULL);
 
     dirent = dfs_ramfs_lookup(ramfs, path, &size);
-    if (dirent == RT_NULL) return -DFS_STATUS_ENOENT;
+    if (dirent == RT_NULL)
+        return -DFS_STATUS_ENOENT;
 
     rt_list_remove(&(dirent->list));
     if (dirent->data != RT_NULL)
@@ -322,7 +346,9 @@ int dfs_ramfs_unlink(struct dfs_filesystem *fs, const char *path)
     return DFS_STATUS_OK;
 }
 
-int dfs_ramfs_rename(struct dfs_filesystem *fs, const char *oldpath, const char *newpath)
+int dfs_ramfs_rename(struct dfs_filesystem *fs,
+                     const char            *oldpath,
+                     const char            *newpath)
 {
     struct ramfs_dirent *dirent;
     struct dfs_ramfs *ramfs;
@@ -332,10 +358,12 @@ int dfs_ramfs_rename(struct dfs_filesystem *fs, const char *oldpath, const char
     RT_ASSERT(ramfs != RT_NULL);
 
     dirent = dfs_ramfs_lookup(ramfs, newpath, &size);
-    if (dirent != RT_NULL) return -DFS_STATUS_EEXIST;
+    if (dirent != RT_NULL)
+        return -DFS_STATUS_EEXIST;
 
     dirent = dfs_ramfs_lookup(ramfs, oldpath, &size);
-    if (dirent == RT_NULL) return -DFS_STATUS_ENOENT;
+    if (dirent == RT_NULL)
+        return -DFS_STATUS_ENOENT;
 
     strncpy(dirent->name, newpath, RAMFS_NAME_MAX);
 
@@ -368,10 +396,11 @@ int dfs_ramfs_init(void)
 {
     /* register ram file system */
     dfs_register(&_ramfs);
+
     return 0;
 }
 
-struct dfs_ramfs* dfs_ramfs_create(rt_uint8_t* pool, rt_size_t size)
+struct dfs_ramfs* dfs_ramfs_create(rt_uint8_t *pool, rt_size_t size)
 {
     struct dfs_ramfs *ramfs;
     rt_uint8_t *data_ptr;
@@ -385,9 +414,10 @@ struct dfs_ramfs* dfs_ramfs_create(rt_uint8_t* pool, rt_size_t size)
     size = RT_ALIGN_DOWN(size, RT_ALIGN_SIZE);
 
     result = rt_memheap_init(&ramfs->memheap, "ramfs", data_ptr, size);
-    if (result != RT_EOK) return RT_NULL;
-	/* detach this memheap object from the system */
-	rt_object_detach((rt_object_t)&(ramfs->memheap));
+    if (result != RT_EOK)
+        return RT_NULL;
+    /* detach this memheap object from the system */
+    rt_object_detach((rt_object_t)&(ramfs->memheap));
 
     /* initialize ramfs object */
     ramfs->magic = RAMFS_MAGIC;
diff --git a/components/dfs/filesystems/ramfs/dfs_ramfs.h b/components/dfs/filesystems/ramfs/dfs_ramfs.h
index b47422b154..f744a544b8 100644
--- a/components/dfs/filesystems/ramfs/dfs_ramfs.h
+++ b/components/dfs/filesystems/ramfs/dfs_ramfs.h
@@ -1,9 +1,21 @@
 /*
  * File      : dfs_ramfs.h
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2011, Shanghai Real-Thread Technology Co., Ltd
+ * This file is part of Device File System in RT-Thread RTOS
+ * COPYRIGHT (C) 2004-2013, RT-Thread Development Team
  *
- * All rights reserved.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/romfs/dfs_romfs.c b/components/dfs/filesystems/romfs/dfs_romfs.c
index 0cfe4d5361..893b7fb0f2 100644
--- a/components/dfs/filesystems/romfs/dfs_romfs.c
+++ b/components/dfs/filesystems/romfs/dfs_romfs.c
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/romfs/dfs_romfs.h b/components/dfs/filesystems/romfs/dfs_romfs.h
index a4f6af271c..d0898ecd9b 100644
--- a/components/dfs/filesystems/romfs/dfs_romfs.h
+++ b/components/dfs/filesystems/romfs/dfs_romfs.h
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/romfs/romfs.c b/components/dfs/filesystems/romfs/romfs.c
index 78545f060b..90614a14a6 100644
--- a/components/dfs/filesystems/romfs/romfs.c
+++ b/components/dfs/filesystems/romfs/romfs.c
@@ -1,23 +1,51 @@
+/*
+ * File      : romfs.c
+ * This file is part of Device File System in RT-Thread RTOS
+ * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
 #include <dfs_romfs.h>
 
-const static unsigned char _dummy_dummy_txt[] = {
-0x74,0x68,0x69,0x73,0x20,0x69,0x73,0x20,0x61,0x20,0x66,0x69,0x6c,0x65,0x21,0x0d,
-0x0a,
+const static unsigned char _dummy_dummy_txt[] =
+{
+    0x74,0x68,0x69,0x73,0x20,0x69,0x73,0x20,0x61,0x20,0x66,0x69,0x6c,0x65,0x21,0x0d,0x0a,
 };
 
-const static struct romfs_dirent _dummy[] = {
-	{ROMFS_DIRENT_FILE, "dummy.txt", _dummy_dummy_txt, sizeof(_dummy_dummy_txt)},
+const static struct romfs_dirent _dummy[] =
+{
+    {ROMFS_DIRENT_FILE, "dummy.txt", _dummy_dummy_txt, sizeof(_dummy_dummy_txt)},
 };
 
-const static unsigned char _dummy_txt[] = {
-0x74,0x68,0x69,0x73,0x20,0x69,0x73,0x20,0x61,0x20,0x66,0x69,0x6c,0x65,0x21,0x0d,
-0x0a,
+const static unsigned char _dummy_txt[] =
+{
+    0x74,0x68,0x69,0x73,0x20,0x69,0x73,0x20,0x61,0x20,0x66,0x69,0x6c,0x65,0x21,0x0d,0x0a,
 };
 
-const struct romfs_dirent _root_dirent[] = {
-	{ROMFS_DIRENT_DIR, "dummy", (rt_uint8_t*) _dummy, sizeof(_dummy)/sizeof(_dummy[0])},
-	{ROMFS_DIRENT_FILE, "dummy.txt", _dummy_txt, sizeof(_dummy_txt)},
+const struct romfs_dirent _root_dirent[] =
+{
+    {ROMFS_DIRENT_DIR, "dummy", (rt_uint8_t *)_dummy, sizeof(_dummy)/sizeof(_dummy[0])},
+    {ROMFS_DIRENT_FILE, "dummy.txt", _dummy_txt, sizeof(_dummy_txt)},
 };
 
-const struct romfs_dirent romfs_root = {ROMFS_DIRENT_DIR, "/", (rt_uint8_t*) _root_dirent, sizeof(_root_dirent)/sizeof(_root_dirent[0])};
+const struct romfs_dirent romfs_root =
+{
+    ROMFS_DIRENT_DIR, "/", (rt_uint8_t *)_root_dirent, sizeof(_root_dirent)/sizeof(_root_dirent[0])
+};
 
diff --git a/components/dfs/filesystems/skeleton/skeleton.c b/components/dfs/filesystems/skeleton/skeleton.c
index ed2791ad4a..74b0150140 100644
--- a/components/dfs/filesystems/skeleton/skeleton.c
+++ b/components/dfs/filesystems/skeleton/skeleton.c
@@ -1,6 +1,26 @@
 /*
- * A skeleton of file system in Device File System
+ * File      : skeleton.c
+ * This file is part of Device File System in RT-Thread RTOS
+ * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
  */
+
 #include <rtthread.h>
 #include <dfs.h>
 #include <dfs_fs.h>
@@ -9,74 +29,74 @@
 
 int dfs_skt_mount(struct dfs_filesystem* fs, unsigned long rwflag, const void* data)
 {
-	return DFS_STATUS_OK;
+    return DFS_STATUS_OK;
 }
 
 int dfs_skt_unmount(struct dfs_filesystem* fs)
 {
-	return DFS_STATUS_OK;
+    return DFS_STATUS_OK;
 }
 
-int dfs_skt_ioctl(struct dfs_fd* file, int cmd,	void* args)
+int dfs_skt_ioctl(struct dfs_fd* file, int cmd, void* args)
 {
-	return -DFS_STATUS_EIO;
+    return -DFS_STATUS_EIO;
 }
 
 int dfs_skt_read(struct dfs_fd* file, void *buf, rt_size_t count)
 {
-	return count;
+    return count;
 }
 
 int dfs_skt_lseek(struct dfs_fd* file, rt_off_t offset)
 {
-	return -DFS_STATUS_EIO;
+    return -DFS_STATUS_EIO;
 }
 
 int dfs_skt_close(struct dfs_fd* file)
 {
-	return DFS_STATUS_OK;
+    return DFS_STATUS_OK;
 }
 
 int dfs_skt_open(struct dfs_fd* file)
 {
-	return DFS_STATUS_OK;
+    return DFS_STATUS_OK;
 }
 
 int dfs_skt_stat(struct dfs_filesystem* fs, const char *path, struct stat *st)
 {
-	return DFS_STATUS_OK;
+    return DFS_STATUS_OK;
 }
 
 int dfs_skt_getdents(struct dfs_fd* file, struct dirent* dirp, rt_uint32_t count)
 {
-	return count * sizeof(struct dirent);
+    return count * sizeof(struct dirent);
 }
 
 static const struct dfs_filesystem_operation _skt_fs = 
 {
-	"skt",
-	DFS_FS_FLAG_DEFAULT,
-	dfs_skt_mount,
-	dfs_skt_unmount,
-	RT_NULL,
-	RT_NULL,
+    "skt",
+    DFS_FS_FLAG_DEFAULT,
+    dfs_skt_mount,
+    dfs_skt_unmount,
+    RT_NULL,
+    RT_NULL,
 
-	dfs_skt_open,
-	dfs_skt_close,
-	dfs_skt_ioctl,
-	dfs_skt_read,
-	RT_NULL,
-	RT_NULL,
-	dfs_skt_lseek,
-	dfs_skt_getdents,
-	RT_NULL,
-	dfs_skt_stat,
-	RT_NULL,
+    dfs_skt_open,
+    dfs_skt_close,
+    dfs_skt_ioctl,
+    dfs_skt_read,
+    RT_NULL,
+    RT_NULL,
+    dfs_skt_lseek,
+    dfs_skt_getdents,
+    RT_NULL,
+    dfs_skt_stat,
+    RT_NULL,
 };
 
 int dfs_skt_init(void)
 {
     /* register rom file system */
     dfs_register(&_skt_fs);
-	return 0;
+    return 0;
 }
diff --git a/components/dfs/filesystems/skeleton/skeleton.h b/components/dfs/filesystems/skeleton/skeleton.h
index 281e84497c..844e91e4ae 100644
--- a/components/dfs/filesystems/skeleton/skeleton.h
+++ b/components/dfs/filesystems/skeleton/skeleton.h
@@ -1,3 +1,26 @@
+/*
+ * File      : skeleton.h
+ * This file is part of Device File System in RT-Thread RTOS
+ * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
 #ifndef __SKELETON_H__
 #define __SKELETON_H__
 
diff --git a/components/dfs/filesystems/uffs/dfs_uffs.c b/components/dfs/filesystems/uffs/dfs_uffs.c
index f9c314622b..faaee0990e 100644
--- a/components/dfs/filesystems/uffs/dfs_uffs.c
+++ b/components/dfs/filesystems/uffs/dfs_uffs.c
@@ -1,18 +1,29 @@
 /*
- * File      : rtthread.h
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006-2012, RT-Thread Development Team
+ * File      : dfs_uffs.c
+ * This file is part of Device File System in RT-Thread RTOS
+ * COPYRIGHT (C) 2004-2012, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
  * 2011-10-22     prife        the first version
  * 2012-03-28     prife        use mtd device interface
  * 2012-04-05     prife        update uffs with official repo and use uffs_UnMount/Mount
-*/
+ */
+
 #include <rtthread.h>
 
 #include <dfs_fs.h>
diff --git a/components/dfs/filesystems/uffs/dfs_uffs.h b/components/dfs/filesystems/uffs/dfs_uffs.h
index f418f1b913..4f83413cd9 100644
--- a/components/dfs/filesystems/uffs/dfs_uffs.h
+++ b/components/dfs/filesystems/uffs/dfs_uffs.h
@@ -1,8 +1,25 @@
 /*
- * dfs_uffs.h
+ * File      : dfs_uffs.h
+ * This file is part of Device File System in RT-Thread RTOS
+ * COPYRIGHT (C) 2004-2012, RT-Thread Development Team
  *
- *  Created on: 2012-3-30
- *      Author: prife
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2012-03-30     prife        the first version
  */
 
 #ifndef DFS_UFFS_H_
diff --git a/components/dfs/filesystems/uffs/uffs_nandif.c b/components/dfs/filesystems/uffs/uffs_nandif.c
index f016263eb0..47cb88b6aa 100644
--- a/components/dfs/filesystems/uffs/uffs_nandif.c
+++ b/components/dfs/filesystems/uffs/uffs_nandif.c
@@ -8,338 +8,352 @@
 
 static int nand_init_flash(uffs_Device *dev)
 {
-	return UFFS_FLASH_NO_ERR;
+    return UFFS_FLASH_NO_ERR;
 }
 
 static int nand_release_flash(uffs_Device *dev)
 {
-	return UFFS_FLASH_NO_ERR;
+    return UFFS_FLASH_NO_ERR;
 }
 static int nand_erase_block(uffs_Device *dev, unsigned block)
 {
-	int res;
-	res = rt_mtd_nand_erase_block(RT_MTD_NAND_DEVICE(dev->_private), block);
-	return res == RT_EOK ? UFFS_FLASH_NO_ERR : UFFS_FLASH_IO_ERR;
+    int res;
+
+    res = rt_mtd_nand_erase_block(RT_MTD_NAND_DEVICE(dev->_private), block);
+
+    return res == RT_EOK ? UFFS_FLASH_NO_ERR : UFFS_FLASH_IO_ERR;
 }
 
 #if defined(RT_UFFS_USE_CHECK_MARK_FUNCITON)
 static int nand_check_block(uffs_Device *dev, unsigned block)
 {
-	int res;
-	res = rt_mtd_nand_check_block(RT_MTD_NAND_DEVICE(dev->_private), block);
-	return res == RT_EOK ? UFFS_FLASH_NO_ERR : UFFS_FLASH_BAD_BLK;
+    int res;
+
+    res = rt_mtd_nand_check_block(RT_MTD_NAND_DEVICE(dev->_private), block);
+
+    return res == RT_EOK ? UFFS_FLASH_NO_ERR : UFFS_FLASH_BAD_BLK;
 }
 
 static int nand_mark_badblock(uffs_Device *dev, unsigned block)
 {
-	int res;
-	res = rt_mtd_nand_mark_badblock(RT_MTD_NAND_DEVICE(dev->_private), block);
-	return res == RT_EOK ? UFFS_FLASH_NO_ERR : UFFS_FLASH_IO_ERR;
+    int res;
+
+    res = rt_mtd_nand_mark_badblock(RT_MTD_NAND_DEVICE(dev->_private), block);
+
+    return res == RT_EOK ? UFFS_FLASH_NO_ERR : UFFS_FLASH_IO_ERR;
 }
 #endif
 
 #if (RT_CONFIG_UFFS_ECC_MODE == UFFS_ECC_NONE) || (RT_CONFIG_UFFS_ECC_MODE == UFFS_ECC_SOFT)
-
-static int nand_read_page(
-    uffs_Device *dev,
-    u32 block, u32 page,
-    u8 *data, int data_len,
-    u8 * ecc,
-    rt_uint8_t *spare, int spare_len)
+static int nand_read_page(uffs_Device *dev,
+                          u32          block,
+                          u32          page,
+                          u8          *data,
+                          int          data_len,
+                          u8          *ecc,
+                          rt_uint8_t  *spare,
+                          int          spare_len)
 {
-	int res;
+    int res;
 
-	page = block * dev->attr->pages_per_block + page;
-	if (data == NULL && spare == NULL)
-	{
+    page = block * dev->attr->pages_per_block + page;
+    if (data == NULL && spare == NULL)
+    {
 #if defined(RT_UFFS_USE_CHECK_MARK_FUNCITON)
-		RT_ASSERT(0); //should not be here
+        RT_ASSERT(0); //should not be here
 #else
-		/* check block status: bad or good */
-		rt_uint8_t spare[UFFS_MAX_SPARE_SIZE];
+        /* check block status: bad or good */
+        rt_uint8_t spare[UFFS_MAX_SPARE_SIZE];
 
-		rt_memset(spare, 0, UFFS_MAX_SPARE_SIZE);
+        rt_memset(spare, 0, UFFS_MAX_SPARE_SIZE);
 
-		rt_mtd_nand_read(RT_MTD_NAND_DEVICE(dev->_private),
-		                 page, RT_NULL, 0,
-		                 spare, dev->attr->spare_size);//dev->mem.spare_data_size
+        rt_mtd_nand_read(RT_MTD_NAND_DEVICE(dev->_private),
+                         page, RT_NULL, 0,
+                         spare, dev->attr->spare_size);//dev->mem.spare_data_size
 
-		res = spare[dev->attr->block_status_offs] == 0xFF ?
-				               UFFS_FLASH_NO_ERR : UFFS_FLASH_BAD_BLK;
-		return res;
+        res = spare[dev->attr->block_status_offs] == 0xFF ?
+                               UFFS_FLASH_NO_ERR : UFFS_FLASH_BAD_BLK;
+
+        return res;
 #endif
-	}
+    }
 
-	rt_mtd_nand_read(RT_MTD_NAND_DEVICE(dev->_private),
-	                   	   page, data, data_len, spare, spare_len);
+    rt_mtd_nand_read(RT_MTD_NAND_DEVICE(dev->_private),
+                     page, data, data_len, spare, spare_len);
 
-	return UFFS_FLASH_NO_ERR;
+    return UFFS_FLASH_NO_ERR;
 }
 
-static int nand_write_page(
-    uffs_Device *dev,
-    u32 block, u32 page,
-    const u8 *data, int data_len,
-    const u8 *spare, int spare_len)
+static int nand_write_page(uffs_Device *dev,
+                           u32          block,
+                           u32          page,
+                           const u8    *data,
+                           int          data_len,
+                           const u8    *spare,
+                           int          spare_len)
 {
-	int res;
+    int res;
 
-	RT_ASSERT(UFFS_MAX_SPARE_SIZE >= dev->attr->spare_size);
+    RT_ASSERT(UFFS_MAX_SPARE_SIZE >= dev->attr->spare_size);
 
-	page = block * dev->attr->pages_per_block + page;
+    page = block * dev->attr->pages_per_block + page;
 
-	if (data == NULL && spare == NULL)
-	{
+    if (data == NULL && spare == NULL)
+    {
 #if defined(RT_UFFS_USE_CHECK_MARK_FUNCITON)
-		RT_ASSERT(0); //should not be here
+        RT_ASSERT(0); //should not be here
 #else
-		/* mark bad block  */
-		rt_uint8_t spare[UFFS_MAX_SPARE_SIZE];
+        /* mark bad block  */
+        rt_uint8_t spare[UFFS_MAX_SPARE_SIZE];
 
-		rt_memset(spare, 0xFF, UFFS_MAX_SPARE_SIZE);
-		spare[dev->attr->block_status_offs] =  0x00;
+        rt_memset(spare, 0xFF, UFFS_MAX_SPARE_SIZE);
+        spare[dev->attr->block_status_offs] =  0x00;
 
-		res = rt_mtd_nand_write(RT_MTD_NAND_DEVICE(dev->_private),
-		                        page, RT_NULL, 0,
-		                        spare, dev->attr->spare_size);//dev->mem.spare_data_size
-		if (res != RT_EOK)
-			goto __error;
+        res = rt_mtd_nand_write(RT_MTD_NAND_DEVICE(dev->_private),
+                                page, RT_NULL, 0,
+                                spare, dev->attr->spare_size);//dev->mem.spare_data_size
+        if (res != RT_EOK)
+            goto __error;
 #endif
-	}
+    }
 
-	res = rt_mtd_nand_write(RT_MTD_NAND_DEVICE(dev->_private),
-	                   	   page,  data, data_len, spare, spare_len);
-	if (res != RT_EOK)
-		goto __error;
+    res = rt_mtd_nand_write(RT_MTD_NAND_DEVICE(dev->_private),
+                           page,  data, data_len, spare, spare_len);
+    if (res != RT_EOK)
+        goto __error;
 
-	return UFFS_FLASH_NO_ERR;
+    return UFFS_FLASH_NO_ERR;
 
 __error:
-	return UFFS_FLASH_IO_ERR;
+    return UFFS_FLASH_IO_ERR;
 }
 
 const uffs_FlashOps nand_ops =
 {
-	nand_init_flash,	/* InitFlash() */
-	nand_release_flash,	/* ReleaseFlash() */
-	nand_read_page,		/* ReadPage() */
-	NULL,				/* ReadPageWithLayout */
-	nand_write_page,	/* WritePage() */
-	NULL,				/* WirtePageWithLayout */
+    nand_init_flash,    /* InitFlash() */
+    nand_release_flash, /* ReleaseFlash() */
+    nand_read_page,     /* ReadPage() */
+    NULL,               /* ReadPageWithLayout */
+    nand_write_page,    /* WritePage() */
+    NULL,               /* WirtePageWithLayout */
 #if defined(RT_UFFS_USE_CHECK_MARK_FUNCITON)
-	nand_check_block,
-	nand_mark_badblock,
+    nand_check_block,
+    nand_mark_badblock,
 #else
-	NULL,               /* IsBadBlock(), let UFFS take care of it. */
-	NULL,               /* MarkBadBlock(), let UFFS take care of it. */
+    NULL,               /* IsBadBlock(), let UFFS take care of it. */
+    NULL,               /* MarkBadBlock(), let UFFS take care of it. */
 #endif
-	nand_erase_block,	/* EraseBlock() */
+    nand_erase_block,   /* EraseBlock() */
 };
 
-void uffs_setup_storage(
-    struct uffs_StorageAttrSt *attr,
-    struct rt_mtd_nand_device * nand)
+void uffs_setup_storage(struct uffs_StorageAttrSt *attr,
+                        struct rt_mtd_nand_device *nand)
 {
-	rt_memset(attr, 0, sizeof(struct uffs_StorageAttrSt));
+    rt_memset(attr, 0, sizeof(struct uffs_StorageAttrSt));
 
-//	attr->total_blocks = nand->end_block - nand->start_block + 1;/* no use */
-	attr->page_data_size = nand->page_size;                /* page data size */
-	attr->pages_per_block = nand->pages_per_block;         /* pages per block */
-	attr->spare_size = nand->oob_size;                     /* page spare size */
-	attr->ecc_opt = RT_CONFIG_UFFS_ECC_MODE;               /* ecc option */
-	attr->ecc_size = 0;                                    /* ecc size is 0 , the uffs will calculate the ecc size*/
-	attr->block_status_offs = attr->ecc_size;              /* indicate block bad or good, offset in spare */
-	attr->layout_opt = RT_CONFIG_UFFS_LAYOUT;              /* let UFFS do the spare layout */
+//  attr->total_blocks = nand->end_block - nand->start_block + 1;/* no use */
+    attr->page_data_size = nand->page_size;                /* page data size */
+    attr->pages_per_block = nand->pages_per_block;         /* pages per block */
+    attr->spare_size = nand->oob_size;                     /* page spare size */
+    attr->ecc_opt = RT_CONFIG_UFFS_ECC_MODE;               /* ecc option */
+    attr->ecc_size = 0;                                    /* ecc size is 0 , the uffs will calculate the ecc size*/
+    attr->block_status_offs = attr->ecc_size;              /* indicate block bad or good, offset in spare */
+    attr->layout_opt = RT_CONFIG_UFFS_LAYOUT;              /* let UFFS do the spare layout */
 }
 
 #elif  RT_CONFIG_UFFS_ECC_MODE == UFFS_ECC_HW_AUTO
-
-static int WritePageWithLayout(
-	uffs_Device *dev, u32 block, u32 page,
-	const u8 *data, int data_len,
-	const u8 *ecc,  //NULL
-	const uffs_TagStore *ts)
+static int WritePageWithLayout(uffs_Device         *dev,
+                               u32                  block,
+                               u32                  page,
+                               const u8            *data,
+                               int                  data_len,
+                               const u8            *ecc,  //NULL
+                               const uffs_TagStore *ts)
 {
-	int res;
-	int spare_len;
-	rt_uint8_t spare[UFFS_MAX_SPARE_SIZE];
+    int res;
+    int spare_len;
+    rt_uint8_t spare[UFFS_MAX_SPARE_SIZE];
 
-	RT_ASSERT(UFFS_MAX_SPARE_SIZE >= dev->attr->spare_size);
+    RT_ASSERT(UFFS_MAX_SPARE_SIZE >= dev->attr->spare_size);
 
-	page = block * dev->attr->pages_per_block + page;
-	spare_len = dev->mem.spare_data_size;
+    page = block * dev->attr->pages_per_block + page;
+    spare_len = dev->mem.spare_data_size;
 
-	if (data == NULL && ts == NULL)
-	{
+    if (data == NULL && ts == NULL)
+    {
 #if defined(RT_UFFS_USE_CHECK_MARK_FUNCITON)
-		RT_ASSERT(0); //should not be here
+        RT_ASSERT(0); //should not be here
 #else
-		/* mark bad block  */
-		rt_memset(spare, 0xFF, UFFS_MAX_SPARE_SIZE);
-		spare[dev->attr->block_status_offs] =  0x00;
+        /* mark bad block  */
+        rt_memset(spare, 0xFF, UFFS_MAX_SPARE_SIZE);
+        spare[dev->attr->block_status_offs] =  0x00;
 
-		res = rt_mtd_nand_write(RT_MTD_NAND_DEVICE(dev->_private),
-		                        page, RT_NULL, 0,
-		                        spare, dev->attr->spare_size);//dev->mem.spare_data_size
-		if (res != RT_EOK)
-			goto __error;
-
-		dev->st.io_write++;
-		return UFFS_FLASH_NO_ERR;
+        res = rt_mtd_nand_write(RT_MTD_NAND_DEVICE(dev->_private),
+                                page, RT_NULL, 0,
+                                spare, dev->attr->spare_size);//dev->mem.spare_data_size
+        if (res != RT_EOK)
+            goto __error;
 
+        dev->st.io_write++;
+        return UFFS_FLASH_NO_ERR;
 #endif
-	}
+    }
 
-	if (data != NULL && data_len != 0)
-	{
-		RT_ASSERT(data_len == dev->attr->page_data_size);
+    if (data != NULL && data_len != 0)
+    {
+        RT_ASSERT(data_len == dev->attr->page_data_size);
 
-		dev->st.page_write_count++;
-		dev->st.io_write += data_len;
-	}
+        dev->st.page_write_count++;
+        dev->st.io_write += data_len;
+    }
 
-	if (ts != RT_NULL)
-	{
-		uffs_FlashMakeSpare(dev, ts, RT_NULL, (u8 *)spare);
-		dev->st.spare_write_count++;
-		dev->st.io_write += spare_len;
-	}
+    if (ts != RT_NULL)
+    {
+        uffs_FlashMakeSpare(dev, ts, RT_NULL, (u8 *)spare);
+        dev->st.spare_write_count++;
+        dev->st.io_write += spare_len;
+    }
 
-	res = rt_mtd_nand_write(RT_MTD_NAND_DEVICE(dev->_private),
-	                   	   page,  data, data_len, spare, spare_len);
-	if (res != RT_EOK)
-		goto __error;
+    res = rt_mtd_nand_write(RT_MTD_NAND_DEVICE(dev->_private),
+                            page, data, data_len, spare, spare_len);
+    if (res != RT_EOK)
+        goto __error;
 
-	return UFFS_FLASH_NO_ERR;
+    return UFFS_FLASH_NO_ERR;
 
 __error:
-	return UFFS_FLASH_IO_ERR;
+    return UFFS_FLASH_IO_ERR;
 }
 
-static URET ReadPageWithLayout(
-	uffs_Device *dev, u32 block, u32 page,
-	u8* data, int data_len,
-	u8 *ecc,              //NULL
-	uffs_TagStore *ts,
-	u8 *ecc_store)        //NULL
+static URET ReadPageWithLayout(uffs_Device   *dev,
+                               u32            block,
+                               u32            page,
+                               u8            *data,
+                               int            data_len,
+                               u8            *ecc,              //NULL
+                               uffs_TagStore *ts,
+                               u8            *ecc_store)        //NULL
 {
-	int res = UFFS_FLASH_NO_ERR;
-	int spare_len;
-	rt_uint8_t spare[UFFS_MAX_SPARE_SIZE];
+    int res = UFFS_FLASH_NO_ERR;
+    int spare_len;
+    rt_uint8_t spare[UFFS_MAX_SPARE_SIZE];
 
-	RT_ASSERT(UFFS_MAX_SPARE_SIZE >= dev->attr->spare_size);
+    RT_ASSERT(UFFS_MAX_SPARE_SIZE >= dev->attr->spare_size);
 
-	page = block * dev->attr->pages_per_block + page;
-	spare_len = dev->mem.spare_data_size;
+    page = block * dev->attr->pages_per_block + page;
+    spare_len = dev->mem.spare_data_size;
 
-	if (data == RT_NULL && ts == RT_NULL)
-	{
+    if (data == RT_NULL && ts == RT_NULL)
+    {
 #if defined(RT_UFFS_USE_CHECK_MARK_FUNCITON)
-		RT_ASSERT(0); //should not be here
+        RT_ASSERT(0); //should not be here
 #else
-		/* check block good or bad */
+        /* check block good or bad */
 
-		rt_mtd_nand_read(RT_MTD_NAND_DEVICE(dev->_private),
-		                 page, RT_NULL, 0,
-		                 spare, dev->attr->spare_size);//dev->mem.spare_data_size
+        rt_mtd_nand_read(RT_MTD_NAND_DEVICE(dev->_private),
+                         page, RT_NULL, 0,
+                         spare, dev->attr->spare_size);//dev->mem.spare_data_size
 
-		dev->st.io_read++;
+        dev->st.io_read++;
 
-		res = spare[dev->attr->block_status_offs] == 0xFF ?
-				               UFFS_FLASH_NO_ERR : UFFS_FLASH_BAD_BLK;
-		return res;
+        res = spare[dev->attr->block_status_offs] == 0xFF ?
+                               UFFS_FLASH_NO_ERR : UFFS_FLASH_BAD_BLK;
+        return res;
 #endif
-	}
+    }
 
-	if (data != RT_NULL)
-	{
-		dev->st.io_read += data_len;
-		dev->st.page_read_count++;
-	}
+    if (data != RT_NULL)
+    {
+        dev->st.io_read += data_len;
+        dev->st.page_read_count++;
+    }
 
-	res = rt_mtd_nand_read(RT_MTD_NAND_DEVICE(dev->_private),
-	                   	   page, data, data_len, spare, spare_len);
-	if (res == 0)
-		res = UFFS_FLASH_NO_ERR;
-	else if (res == -1)
-	{
-		//TODO ecc correct, add code to use hardware do ecc correct
-		res = UFFS_FLASH_ECC_OK;
-	}
-	else
-		res = UFFS_FLASH_ECC_FAIL;
+    res = rt_mtd_nand_read(RT_MTD_NAND_DEVICE(dev->_private),
+                           page, data, data_len, spare, spare_len);
+    if (res == 0)
+        res = UFFS_FLASH_NO_ERR;
+    else if (res == -1)
+    {
+        //TODO ecc correct, add code to use hardware do ecc correct
+        res = UFFS_FLASH_ECC_OK;
+    }
+    else
+        res = UFFS_FLASH_ECC_FAIL;
 
-	if (ts != RT_NULL)
-	{
-		// unload ts and ecc from spare, you can modify it if you like
-		uffs_FlashUnloadSpare(dev, (const u8 *)spare, ts, RT_NULL);
+    if (ts != RT_NULL)
+    {
+        // unload ts and ecc from spare, you can modify it if you like
+        uffs_FlashUnloadSpare(dev, (const u8 *)spare, ts, RT_NULL);
 
-		if ((spare[spare_len - 1] == 0xFF) && (res == UFFS_FLASH_NO_ERR))
-			res = UFFS_FLASH_NOT_SEALED;
+        if ((spare[spare_len - 1] == 0xFF) && (res == UFFS_FLASH_NO_ERR))
+            res = UFFS_FLASH_NOT_SEALED;
 
-		dev->st.io_read += spare_len;
-		dev->st.spare_read_count++;
-	}
+        dev->st.io_read += spare_len;
+        dev->st.spare_read_count++;
+    }
 
-	return res;
+    return res;
 }
 
 const uffs_FlashOps nand_ops =
 {
-	nand_init_flash,    /* InitFlash() */
-	nand_release_flash, /* ReleaseFlash() */
-	NULL,               /* ReadPage() */
-	ReadPageWithLayout,	/* ReadPageWithLayout */
-	NULL,               /* WritePage() */
-	WritePageWithLayout,/* WirtePageWithLayout */
+    nand_init_flash,    /* InitFlash() */
+    nand_release_flash, /* ReleaseFlash() */
+    NULL,               /* ReadPage() */
+    ReadPageWithLayout, /* ReadPageWithLayout */
+    NULL,               /* WritePage() */
+    WritePageWithLayout,/* WirtePageWithLayout */
 
 #if defined(RT_UFFS_USE_CHECK_MARK_FUNCITON)
-	nand_check_block,
-	nand_mark_badblock,
+    nand_check_block,
+    nand_mark_badblock,
 #else
-	NULL,               /* IsBadBlock(), let UFFS take care of it. */
-	NULL,               /* MarkBadBlock(), let UFFS take care of it. */
+    NULL,               /* IsBadBlock(), let UFFS take care of it. */
+    NULL,               /* MarkBadBlock(), let UFFS take care of it. */
 #endif
-	nand_erase_block,   /* EraseBlock() */
+    nand_erase_block,   /* EraseBlock() */
 };
 
 static rt_uint8_t hw_flash_data_layout[UFFS_SPARE_LAYOUT_SIZE] =
-{0x05, 0x08, 0xFF, 0x00};
+{
+    0x05, 0x08, 0xFF, 0x00
+};
 
 static rt_uint8_t hw_flash_ecc_layout[UFFS_SPARE_LAYOUT_SIZE] =
-{0x00, 0x04, 0xFF, 0x00};
+{
+    0x00, 0x04, 0xFF, 0x00
+};
 
-void uffs_setup_storage(
-    struct uffs_StorageAttrSt *attr,
-    struct rt_mtd_nand_device * nand)
+void uffs_setup_storage(struct uffs_StorageAttrSt *attr,
+                        struct rt_mtd_nand_device *nand)
 {
-	rt_memset(attr, 0, sizeof(struct uffs_StorageAttrSt));
+    rt_memset(attr, 0, sizeof(struct uffs_StorageAttrSt));
 
-//	attr->total_blocks = nand->end_block - nand->start_block + 1;/* no use */
-	attr->page_data_size = nand->page_size;                /* page data size */
-	attr->pages_per_block = nand->pages_per_block;         /* pages per block */
-	attr->spare_size = nand->oob_size;                     /* page spare size */
-	attr->ecc_opt = RT_CONFIG_UFFS_ECC_MODE;               /* ecc option */
-	attr->ecc_size = nand->oob_size-nand->oob_free;        /* ecc size */
-	attr->block_status_offs = attr->ecc_size;              /* indicate block bad or good, offset in spare */
-	attr->layout_opt = RT_CONFIG_UFFS_LAYOUT;              /* let UFFS do the spare layout */
+//  attr->total_blocks = nand->end_block - nand->start_block + 1;/* no use */
+    attr->page_data_size = nand->page_size;                /* page data size */
+    attr->pages_per_block = nand->pages_per_block;         /* pages per block */
+    attr->spare_size = nand->oob_size;                     /* page spare size */
+    attr->ecc_opt = RT_CONFIG_UFFS_ECC_MODE;               /* ecc option */
+    attr->ecc_size = nand->oob_size-nand->oob_free;        /* ecc size */
+    attr->block_status_offs = attr->ecc_size;              /* indicate block bad or good, offset in spare */
+    attr->layout_opt = RT_CONFIG_UFFS_LAYOUT;              /* let UFFS do the spare layout */
 
-	/* calculate the ecc layout array */
-	hw_flash_data_layout[0] = attr->ecc_size + 1; /* ecc size + 1byte block status */
-	hw_flash_data_layout[1] = 0x08;
-	hw_flash_data_layout[2] = 0xFF;
-	hw_flash_data_layout[3] = 0x00;
+    /* calculate the ecc layout array */
+    hw_flash_data_layout[0] = attr->ecc_size + 1; /* ecc size + 1byte block status */
+    hw_flash_data_layout[1] = 0x08;
+    hw_flash_data_layout[2] = 0xFF;
+    hw_flash_data_layout[3] = 0x00;
 
-	hw_flash_ecc_layout[0] = 0;
-	hw_flash_ecc_layout[1] = attr->ecc_size;
-	hw_flash_ecc_layout[2] = 0xFF;
-	hw_flash_ecc_layout[3] = 0x00;
+    hw_flash_ecc_layout[0] = 0;
+    hw_flash_ecc_layout[1] = attr->ecc_size;
+    hw_flash_ecc_layout[2] = 0xFF;
+    hw_flash_ecc_layout[3] = 0x00;
 
-	/* initialize  _uffs_data_layout and _uffs_ecc_layout */
-	rt_memcpy(attr->_uffs_data_layout, hw_flash_data_layout, UFFS_SPARE_LAYOUT_SIZE);
-	rt_memcpy(attr->_uffs_ecc_layout, hw_flash_ecc_layout, UFFS_SPARE_LAYOUT_SIZE);
+    /* initialize  _uffs_data_layout and _uffs_ecc_layout */
+    rt_memcpy(attr->_uffs_data_layout, hw_flash_data_layout, UFFS_SPARE_LAYOUT_SIZE);
+    rt_memcpy(attr->_uffs_ecc_layout, hw_flash_ecc_layout, UFFS_SPARE_LAYOUT_SIZE);
 
-	attr->data_layout = attr->_uffs_data_layout;
-	attr->ecc_layout = attr->_uffs_ecc_layout;
+    attr->data_layout = attr->_uffs_data_layout;
+    attr->ecc_layout = attr->_uffs_ecc_layout;
 }
 #endif
diff --git a/components/dfs/include/dfs.h b/components/dfs/include/dfs.h
index ff7de473b4..9ef14d3cfc 100644
--- a/components/dfs/include/dfs.h
+++ b/components/dfs/include/dfs.h
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2004-2012, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/include/dfs_def.h b/components/dfs/include/dfs_def.h
index 52560eae84..a73ff4ec8b 100644
--- a/components/dfs/include/dfs_def.h
+++ b/components/dfs/include/dfs_def.h
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2004-2012, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/include/dfs_elm.h b/components/dfs/include/dfs_elm.h
index 18401ef8ee..da8a217005 100644
--- a/components/dfs/include/dfs_elm.h
+++ b/components/dfs/include/dfs_elm.h
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2008-2012, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/include/dfs_file.h b/components/dfs/include/dfs_file.h
index a3fba3dada..87a178d026 100644
--- a/components/dfs/include/dfs_file.h
+++ b/components/dfs/include/dfs_file.h
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2004-2012, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/include/dfs_fs.h b/components/dfs/include/dfs_fs.h
index 8751c72a84..e8f42f6631 100644
--- a/components/dfs/include/dfs_fs.h
+++ b/components/dfs/include/dfs_fs.h
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2004-2012, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/include/dfs_init.h b/components/dfs/include/dfs_init.h
index 16afd24aab..b421bdcb04 100644
--- a/components/dfs/include/dfs_init.h
+++ b/components/dfs/include/dfs_init.h
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2004-2012, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/include/dfs_posix.h b/components/dfs/include/dfs_posix.h
index c8d15fcf9e..56a0511422 100644
--- a/components/dfs/include/dfs_posix.h
+++ b/components/dfs/include/dfs_posix.h
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2004-2012, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/src/dfs.c b/components/dfs/src/dfs.c
index f5c2b5aaf8..4e38615ba7 100644
--- a/components/dfs/src/dfs.c
+++ b/components/dfs/src/dfs.c
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2004-2012, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/src/dfs_file.c b/components/dfs/src/dfs_file.c
index 0e757a2735..05e76c96f7 100644
--- a/components/dfs/src/dfs_file.c
+++ b/components/dfs/src/dfs_file.c
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/src/dfs_fs.c b/components/dfs/src/dfs_fs.c
index b37d4ffd15..c7fb80eff3 100644
--- a/components/dfs/src/dfs_fs.c
+++ b/components/dfs/src/dfs_fs.c
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2004-2012, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/src/dfs_posix.c b/components/dfs/src/dfs_posix.c
index 5cb3b8ffaa..96139837e9 100644
--- a/components/dfs/src/dfs_posix.c
+++ b/components/dfs/src/dfs_posix.c
@@ -3,9 +3,19 @@
  * This file is part of Device File System in RT-Thread RTOS
  * COPYRIGHT (C) 2004-2012, RT-Thread Development Team
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Change Logs:
  * Date           Author       Notes