sched: migrate to SPDX identifier

Most tools used for compliance and SBOM generation use SPDX identifiers
This change brings us a step closer to an easy SBOM generation.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>

sched/CMakeLists.txt

@@ -1,6 +1,8 @@
 # ##############################################################################
 # sched/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this

sched/Makefile

@@ -1,6 +1,8 @@
 ############################################################################
 # sched/Makefile
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The

sched/addrenv/CMakeLists.txt

@@ -1,6 +1,8 @@
 # ##############################################################################
 # sched/addrenv/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this

sched/addrenv/Make.defs

@@ -1,6 +1,8 @@
 ############################################################################
 # sched/addrenv/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The

sched/addrenv/addrenv.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/addrenv/addrenv.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/clock/CMakeLists.txt

@@ -1,6 +1,8 @@
 # ##############################################################################
 # sched/clock/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this

sched/clock/Make.defs

@@ -1,6 +1,8 @@
 ############################################################################
 # sched/clock/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The

sched/clock/clock.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/clock/clock.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/clock/clock.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/clock/clock.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/clock/clock_abstime2ticks.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/clock/clock_abstime2ticks.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/clock/clock_adjtime.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/clock/clock_adjtime.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/clock/clock_dow.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/clock/clock_dow.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/clock/clock_gettime.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/clock/clock_gettime.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/clock/clock_initialize.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/clock/clock_initialize.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/clock/clock_perf.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/clock/clock_perf.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/clock/clock_settime.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/clock/clock_settime.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/clock/clock_systime_ticks.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/clock/clock_systime_ticks.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/clock/clock_systime_timespec.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/clock/clock_systime_timespec.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/clock/clock_timekeeping.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/clock/clock_timekeeping.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/clock/clock_timekeeping.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/clock/clock_timekeeping.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/environ/CMakeLists.txt

@@ -1,6 +1,8 @@
 # ##############################################################################
 # sched/environ/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this

sched/environ/Make.defs

@@ -1,6 +1,8 @@
 ############################################################################
 # sched/environ/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The

sched/environ/env_clearenv.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/environ/env_clearenv.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/environ/env_dup.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/environ/env_dup.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/environ/env_findvar.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/environ/env_findvar.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/environ/env_foreach.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/environ/env_foreach.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/environ/env_getenv.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/environ/env_getenv.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/environ/env_getenvironptr.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/environ/env_getenvironptr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/environ/env_putenv.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/environ/env_putenv.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/environ/env_release.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/environ/env_release.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/environ/env_removevar.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/environ/env_removevar.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/environ/env_setenv.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/environ/env_setenv.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/environ/env_unsetenv.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/environ/env_unsetenv.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/environ/environ.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/environ/environ.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/event/CMakeLists.txt

@@ -1,6 +1,8 @@
 # ##############################################################################
 # sched/event/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this

sched/event/Make.defs

@@ -1,6 +1,8 @@
 ############################################################################
 # sched/event/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The

sched/event/event.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/event/event.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/event/event_destroy.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/event/event_destroy.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/event/event_init.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/event/event_init.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/event/event_post.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/event/event_post.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/event/event_reset.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/event/event_reset.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/event/event_wait.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/event/event_wait.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/group/CMakeLists.txt

@@ -1,6 +1,8 @@
 # ##############################################################################
 # sched/group/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this

sched/group/Make.defs

@@ -1,6 +1,8 @@
 ############################################################################
 # sched/group/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The

sched/group/group.h

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/group/group.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/group/group_argvstr.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/group/group_argvstr.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/group/group_childstatus.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/group/group_childstatus.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/group/group_continue.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/group/group_continue.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/group/group_create.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/group/group_create.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The

sched/group/group_exitinfo.c

@@ -1,6 +1,8 @@
 /****************************************************************************
  * sched/group/group_exitinfo.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The