[Kernel] Update to Apache License v2.0

Update license for RT-Thread kernel.

7 files changed, 42 insertions, 80 deletions

diff --git a/include/libc/libc_dirent.h b/include/libc/libc_dirent.h
index 5bcbc32478..c3a19878ec 100644
--- a/include/libc/libc_dirent.h
+++ b/include/libc/libc_dirent.h
@@ -1,3 +1,9 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 #ifndef LIBC_DIRENT_H__
 #define LIBC_DIRENT_H__
 
diff --git a/include/libc/libc_errno.h b/include/libc/libc_errno.h
index b4f4410595..82ae8cf943 100644
--- a/include/libc/libc_errno.h
+++ b/include/libc/libc_errno.h
@@ -1,21 +1,11 @@
 /*
- * File      : libc_errno.h
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2017, 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.
+ * Copyright (c) 2006-2018, RT-Thread Development Team
  *
- *  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
+ */
+
+/*
+ * File      : libc_errno.h
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/include/libc/libc_fcntl.h b/include/libc/libc_fcntl.h
index 7c5a075a97..1b7c69b1f4 100644
--- a/include/libc/libc_fcntl.h
+++ b/include/libc/libc_fcntl.h
@@ -1,21 +1,11 @@
 /*
- * File      : libc_fcntl.h
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2017 - 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.
+ * Copyright (c) 2006-2018, RT-Thread Development Team
  *
- *  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
+ */
+
+/*
+ * File      : libc_fcntl.h
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/include/libc/libc_fdset.h b/include/libc/libc_fdset.h
index 74c4ba1cb2..ecd965cd22 100644
--- a/include/libc/libc_fdset.h
+++ b/include/libc/libc_fdset.h
@@ -1,21 +1,11 @@
 /*
- * File      : libc_errno.h
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2017, 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.
+ * Copyright (c) 2006-2018, RT-Thread Development Team
  *
- *  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
+ */
+
+/*
+ * File      : libc_errno.h
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/include/libc/libc_ioctl.h b/include/libc/libc_ioctl.h
index b61866a524..ef5a5257a8 100644
--- a/include/libc/libc_ioctl.h
+++ b/include/libc/libc_ioctl.h
@@ -1,21 +1,11 @@
 /*
- * File      : libc_ioctl.h
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2017, 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.
+ * Copyright (c) 2006-2018, RT-Thread Development Team
  *
- *  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
+ */
+
+/*
+ * File      : libc_ioctl.h
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/include/libc/libc_signal.h b/include/libc/libc_signal.h
index d3050bfb54..5db43eb35e 100644
--- a/include/libc/libc_signal.h
+++ b/include/libc/libc_signal.h
@@ -1,21 +1,11 @@
 /*
- * File      : libc_signal.h
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2017, 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.
+ * Copyright (c) 2006-2018, RT-Thread Development Team
  *
- *  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
+ */
+
+/*
+ * File      : libc_signal.h
  *
  * Change Logs:
  * Date           Author       Notes
diff --git a/include/libc/libc_stat.h b/include/libc/libc_stat.h
index 26752393db..9079d1ef15 100644
--- a/include/libc/libc_stat.h
+++ b/include/libc/libc_stat.h
@@ -1,3 +1,9 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 #ifndef LIBC_STAT_H__
 #define LIBC_STAT_H__