[license] Change the license of FS/DFS to Apache.

38 files changed, 210 insertions, 258 deletions

diff --git a/components/dfs/filesystems/devfs/devfs.c b/components/dfs/filesystems/devfs/devfs.c
index 4694b96c85..3080312874 100644
--- a/components/dfs/filesystems/devfs/devfs.c
+++ b/components/dfs/filesystems/devfs/devfs.c
@@ -1,21 +1,7 @@
 /*
- * File      : devfs.c
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/devfs/devfs.h b/components/dfs/filesystems/devfs/devfs.h
index ef320b78c8..ab2134043c 100644
--- a/components/dfs/filesystems/devfs/devfs.h
+++ b/components/dfs/filesystems/devfs/devfs.h
@@ -1,21 +1,7 @@
 /*
- * File      : devfs.h
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/elmfat/dfs_elm.c b/components/dfs/filesystems/elmfat/dfs_elm.c
index 2aa8fb6522..290cf7c4bb 100644
--- a/components/dfs/filesystems/elmfat/dfs_elm.c
+++ b/components/dfs/filesystems/elmfat/dfs_elm.c
@@ -1,21 +1,7 @@
 /*
- * File      : dfs_elm.c
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2008-2011, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/elmfat/dfs_elm.h b/components/dfs/filesystems/elmfat/dfs_elm.h
index da8a217005..1e9f577062 100644
--- a/components/dfs/filesystems/elmfat/dfs_elm.h
+++ b/components/dfs/filesystems/elmfat/dfs_elm.h
@@ -1,21 +1,7 @@
 /*
- * File      : dfs_elm.h
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2008-2012, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/jffs2/dfs_jffs2.c b/components/dfs/filesystems/jffs2/dfs_jffs2.c
index 17e84f94c0..c082c21d73 100644
--- a/components/dfs/filesystems/jffs2/dfs_jffs2.c
+++ b/components/dfs/filesystems/jffs2/dfs_jffs2.c
@@ -1,21 +1,7 @@
 /*
- * File      : dfs_jffs2.c
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2006-2017, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
@@ -304,7 +290,7 @@ static int dfs_jffs2_open(struct dfs_fd* file)
         return jffs2_result_to_dfs(result);
     }
 
-    /* save this pointer, it will be used when calling read()��write(),
+    /* save this pointer, it will be used when calling read(), write(),
     flush(), lessk(), and will be rt_free when calling close()*/
     file->data = jffs2_file;
     file->pos = jffs2_file->f_offset;
diff --git a/components/dfs/filesystems/jffs2/dfs_jffs2.h b/components/dfs/filesystems/jffs2/dfs_jffs2.h
index 2eee076fcb..1be403a19c 100644
--- a/components/dfs/filesystems/jffs2/dfs_jffs2.h
+++ b/components/dfs/filesystems/jffs2/dfs_jffs2.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
 #ifndef __DFS_JFFS2_H__ 
 #define __DFS_JFFS2_H__
 
diff --git a/components/dfs/filesystems/nfs/dfs_nfs.c b/components/dfs/filesystems/nfs/dfs_nfs.c
index 1324210007..ea055b73c1 100644
--- a/components/dfs/filesystems/nfs/dfs_nfs.c
+++ b/components/dfs/filesystems/nfs/dfs_nfs.c
@@ -1,21 +1,7 @@
 /*
- * File      : dfs_nfs.c
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/nfs/dfs_nfs.h b/components/dfs/filesystems/nfs/dfs_nfs.h
index adc36f82d5..d607776ef1 100644
--- a/components/dfs/filesystems/nfs/dfs_nfs.h
+++ b/components/dfs/filesystems/nfs/dfs_nfs.h
@@ -1,21 +1,7 @@
 /*
- * File      : dfs_nfs.h
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/nfs/mount.h b/components/dfs/filesystems/nfs/mount.h
index 4ce3714f98..aac0fd6bed 100644
--- a/components/dfs/filesystems/nfs/mount.h
+++ b/components/dfs/filesystems/nfs/mount.h
@@ -1,4 +1,12 @@
 /*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+/*
  * Please do not edit this file.
  * It was generated using rpcgen.
  */
diff --git a/components/dfs/filesystems/nfs/mount_clnt.c b/components/dfs/filesystems/nfs/mount_clnt.c
index 504f1e99ae..5c65e75aa5 100644
--- a/components/dfs/filesystems/nfs/mount_clnt.c
+++ b/components/dfs/filesystems/nfs/mount_clnt.c
@@ -1,4 +1,12 @@
 /*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+/*
  * Please do not edit this file.
  * It was generated using rpcgen.
  */
diff --git a/components/dfs/filesystems/nfs/mount_xdr.c b/components/dfs/filesystems/nfs/mount_xdr.c
index e4d2b86f47..8e191d3017 100644
--- a/components/dfs/filesystems/nfs/mount_xdr.c
+++ b/components/dfs/filesystems/nfs/mount_xdr.c
@@ -1,4 +1,12 @@
 /*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+/*
  * Please do not edit this file.
  * It was generated using rpcgen.
  */
diff --git a/components/dfs/filesystems/nfs/nfs.h b/components/dfs/filesystems/nfs/nfs.h
index 7e3e3671af..34054b0084 100644
--- a/components/dfs/filesystems/nfs/nfs.h
+++ b/components/dfs/filesystems/nfs/nfs.h
@@ -1,4 +1,12 @@
 /*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+/*
  * Please do not edit this file.
  * It was generated using rpcgen.
  */
diff --git a/components/dfs/filesystems/nfs/nfs_clnt.c b/components/dfs/filesystems/nfs/nfs_clnt.c
index 913ad510a6..c17fee9e80 100644
--- a/components/dfs/filesystems/nfs/nfs_clnt.c
+++ b/components/dfs/filesystems/nfs/nfs_clnt.c
@@ -1,4 +1,12 @@
 /*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+/*
  * Please do not edit this file.
  * It was generated using rpcgen.
  */
diff --git a/components/dfs/filesystems/nfs/nfs_xdr.c b/components/dfs/filesystems/nfs/nfs_xdr.c
index 72d6edc42a..4cd69ba743 100644
--- a/components/dfs/filesystems/nfs/nfs_xdr.c
+++ b/components/dfs/filesystems/nfs/nfs_xdr.c
@@ -1,4 +1,12 @@
 /*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+/*
  * Please do not edit this file.
  * It was generated using rpcgen.
  */
diff --git a/components/dfs/filesystems/nfs/rpc/auth.h b/components/dfs/filesystems/nfs/rpc/auth.h
index 3351fbbf95..f7dd76c237 100644
--- a/components/dfs/filesystems/nfs/rpc/auth.h
+++ b/components/dfs/filesystems/nfs/rpc/auth.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
 #ifndef __AUTH_H__
 #define __AUTH_H__
 
diff --git a/components/dfs/filesystems/nfs/rpc/auth_none.c b/components/dfs/filesystems/nfs/rpc/auth_none.c
index 92947581d2..9f5ad05002 100644
--- a/components/dfs/filesystems/nfs/rpc/auth_none.c
+++ b/components/dfs/filesystems/nfs/rpc/auth_none.c
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
 /* @(#)auth_none.c	2.1 88/07/29 4.0 RPCSRC */
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
diff --git a/components/dfs/filesystems/nfs/rpc/clnt.h b/components/dfs/filesystems/nfs/rpc/clnt.h
index 527075ee84..e86f8be789 100644
--- a/components/dfs/filesystems/nfs/rpc/clnt.h
+++ b/components/dfs/filesystems/nfs/rpc/clnt.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
 /* @(#)clnt.h	2.1 88/07/29 4.0 RPCSRC; from 1.31 88/02/08 SMI*/
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
diff --git a/components/dfs/filesystems/nfs/rpc/clnt_generic.c b/components/dfs/filesystems/nfs/rpc/clnt_generic.c
index a3de64a2f0..bd241b5835 100644
--- a/components/dfs/filesystems/nfs/rpc/clnt_generic.c
+++ b/components/dfs/filesystems/nfs/rpc/clnt_generic.c
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
 /* @(#)clnt_generic.c   2.2 88/08/01 4.0 RPCSRC */
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
diff --git a/components/dfs/filesystems/nfs/rpc/clnt_udp.c b/components/dfs/filesystems/nfs/rpc/clnt_udp.c
index a69bc0621a..6b4f7bfb13 100644
--- a/components/dfs/filesystems/nfs/rpc/clnt_udp.c
+++ b/components/dfs/filesystems/nfs/rpc/clnt_udp.c
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
 /* @(#)clnt_udp.c	2.2 88/08/01 4.0 RPCSRC */
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
diff --git a/components/dfs/filesystems/nfs/rpc/pmap.c b/components/dfs/filesystems/nfs/rpc/pmap.c
index 4f2cf50c1e..dc5a2ccb8d 100644
--- a/components/dfs/filesystems/nfs/rpc/pmap.c
+++ b/components/dfs/filesystems/nfs/rpc/pmap.c
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
 #include "pmap.h"
 #include "clnt.h"
 #include <rpc/rpc.h>
diff --git a/components/dfs/filesystems/nfs/rpc/pmap.h b/components/dfs/filesystems/nfs/rpc/pmap.h
index aaf28a331a..8ae706c0aa 100644
--- a/components/dfs/filesystems/nfs/rpc/pmap.h
+++ b/components/dfs/filesystems/nfs/rpc/pmap.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
 #ifndef __RPC_PMAP_PROT_H__
 #define __RPC_PMAP_PROT_H__
 
diff --git a/components/dfs/filesystems/nfs/rpc/rpc.h b/components/dfs/filesystems/nfs/rpc/rpc.h
index 306939e2fe..7256d336a1 100644
--- a/components/dfs/filesystems/nfs/rpc/rpc.h
+++ b/components/dfs/filesystems/nfs/rpc/rpc.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
 /* @(#)rpc.h	2.3 88/08/10 4.0 RPCSRC; from 1.9 88/02/08 SMI */
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
diff --git a/components/dfs/filesystems/nfs/rpc/rpc_msg.h b/components/dfs/filesystems/nfs/rpc/rpc_msg.h
index bd32290990..a21ca1ce7d 100644
--- a/components/dfs/filesystems/nfs/rpc/rpc_msg.h
+++ b/components/dfs/filesystems/nfs/rpc/rpc_msg.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
 /* @(#)rpc_msg.h	2.1 88/07/29 4.0 RPCSRC */
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
diff --git a/components/dfs/filesystems/nfs/rpc/rpc_prot.c b/components/dfs/filesystems/nfs/rpc/rpc_prot.c
index 21fc1f4ea4..427d7a11e4 100644
--- a/components/dfs/filesystems/nfs/rpc/rpc_prot.c
+++ b/components/dfs/filesystems/nfs/rpc/rpc_prot.c
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
 /* @(#)rpc_prot.c	2.3 88/08/07 4.0 RPCSRC */
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
diff --git a/components/dfs/filesystems/nfs/rpc/types.h b/components/dfs/filesystems/nfs/rpc/types.h
index 310acf7f77..254fcd339c 100644
--- a/components/dfs/filesystems/nfs/rpc/types.h
+++ b/components/dfs/filesystems/nfs/rpc/types.h
@@ -1,4 +1,12 @@
 /*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+/*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  * unrestricted use provided that this legend is included on all tape
  * media and as a part of the software program in whole or part.  Users
diff --git a/components/dfs/filesystems/nfs/rpc/xdr.c b/components/dfs/filesystems/nfs/rpc/xdr.c
index ec37d6beb9..a6b1b67afb 100644
--- a/components/dfs/filesystems/nfs/rpc/xdr.c
+++ b/components/dfs/filesystems/nfs/rpc/xdr.c
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
 /* @(#)xdr.c	2.1 88/07/29 4.0 RPCSRC */
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
diff --git a/components/dfs/filesystems/nfs/rpc/xdr.h b/components/dfs/filesystems/nfs/rpc/xdr.h
index e4ab884465..fe38c4d120 100644
--- a/components/dfs/filesystems/nfs/rpc/xdr.h
+++ b/components/dfs/filesystems/nfs/rpc/xdr.h
@@ -1,4 +1,12 @@
 /*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+/*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  * unrestricted use provided that this legend is included on all tape
  * media and as a part of the software program in whole or part.  Users
diff --git a/components/dfs/filesystems/nfs/rpc/xdr_mem.c b/components/dfs/filesystems/nfs/rpc/xdr_mem.c
index d6baf85837..ca69ed3647 100644
--- a/components/dfs/filesystems/nfs/rpc/xdr_mem.c
+++ b/components/dfs/filesystems/nfs/rpc/xdr_mem.c
@@ -1,3 +1,11 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
 /* @(#)xdr_mem.c	2.1 88/07/29 4.0 RPCSRC */
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
diff --git a/components/dfs/filesystems/ramfs/dfs_ramfs.c b/components/dfs/filesystems/ramfs/dfs_ramfs.c
index d7911a622d..e851c7ef78 100644
--- a/components/dfs/filesystems/ramfs/dfs_ramfs.c
+++ b/components/dfs/filesystems/ramfs/dfs_ramfs.c
@@ -1,21 +1,7 @@
 /*
- * File      : dfs_ramfs.c
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2004-2013, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/ramfs/dfs_ramfs.h b/components/dfs/filesystems/ramfs/dfs_ramfs.h
index b568706f68..9419784db9 100644
--- a/components/dfs/filesystems/ramfs/dfs_ramfs.h
+++ b/components/dfs/filesystems/ramfs/dfs_ramfs.h
@@ -1,21 +1,7 @@
 /*
- * File      : dfs_ramfs.h
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2004-2013, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/romfs/dfs_romfs.c b/components/dfs/filesystems/romfs/dfs_romfs.c
index c842601dc8..a953ac72d5 100644
--- a/components/dfs/filesystems/romfs/dfs_romfs.c
+++ b/components/dfs/filesystems/romfs/dfs_romfs.c
@@ -1,21 +1,7 @@
 /*
- * File      : dfs_romfs.c
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/romfs/dfs_romfs.h b/components/dfs/filesystems/romfs/dfs_romfs.h
index d0898ecd9b..74b256c8a6 100644
--- a/components/dfs/filesystems/romfs/dfs_romfs.h
+++ b/components/dfs/filesystems/romfs/dfs_romfs.h
@@ -1,21 +1,7 @@
 /*
- * File      : dfs_romfs.h
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/romfs/romfs.c b/components/dfs/filesystems/romfs/romfs.c
index 1bb885a57d..1ea9f21d8e 100644
--- a/components/dfs/filesystems/romfs/romfs.c
+++ b/components/dfs/filesystems/romfs/romfs.c
@@ -1,21 +1,7 @@
 /*
- * File      : romfs.c
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/skeleton/skeleton.c b/components/dfs/filesystems/skeleton/skeleton.c
index 0d96cbffc9..30f0d4f629 100644
--- a/components/dfs/filesystems/skeleton/skeleton.c
+++ b/components/dfs/filesystems/skeleton/skeleton.c
@@ -1,21 +1,7 @@
 /*
- * File      : skeleton.c
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2004-2015, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/skeleton/skeleton.h b/components/dfs/filesystems/skeleton/skeleton.h
index 844e91e4ae..8a783eace5 100644
--- a/components/dfs/filesystems/skeleton/skeleton.h
+++ b/components/dfs/filesystems/skeleton/skeleton.h
@@ -1,21 +1,7 @@
 /*
- * File      : skeleton.h
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/uffs/dfs_uffs.c b/components/dfs/filesystems/uffs/dfs_uffs.c
index c3538ea23f..b875d1eb00 100644
--- a/components/dfs/filesystems/uffs/dfs_uffs.c
+++ b/components/dfs/filesystems/uffs/dfs_uffs.c
@@ -1,21 +1,7 @@
 /*
- * File      : dfs_uffs.c
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2004-2012, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
@@ -348,7 +334,7 @@ static int dfs_uffs_open(struct dfs_fd* file)
         return uffs_result_to_dfs(uffs_get_error());
     }
 
-    /* save this pointer, it will be used when calling read()��write(),
+    /* save this pointer, it will be used when calling read(), write(),
      * flush(), seek(), and will be free when calling close()*/
 
     file->data = (void *)fd;
diff --git a/components/dfs/filesystems/uffs/dfs_uffs.h b/components/dfs/filesystems/uffs/dfs_uffs.h
index 810ab7ebfe..615d29036d 100644
--- a/components/dfs/filesystems/uffs/dfs_uffs.h
+++ b/components/dfs/filesystems/uffs/dfs_uffs.h
@@ -1,21 +1,7 @@
 /*
- * File      : dfs_uffs.h
- * This file is part of Device File System in RT-Thread RTOS
- * COPYRIGHT (C) 2004-2012, RT-Thread Development Team
+ * Copyright (c) 2006-2018, 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.
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/components/dfs/filesystems/uffs/uffs_rtthread.c b/components/dfs/filesystems/uffs/uffs_rtthread.c
index 2bafca92bc..bad456f04c 100644
--- a/components/dfs/filesystems/uffs/uffs_rtthread.c
+++ b/components/dfs/filesystems/uffs/uffs_rtthread.c
@@ -1,4 +1,12 @@
 /*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+/*
   This file is part of UFFS, the Ultra-low-cost Flash File System.
   
   Copyright (C) 2005-2009 Ricky Zheng <[email protected]>