docs(driver): add license header and SPDX identifier

Signed-off-by: Leonardo Grasso <[email protected]>

driver/MIT.txt

@@ -1,4 +1,4 @@
-Copyright (C) 2021 The Falco Authors.
+Copyright (C) 2023 The Falco Authors.
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the

driver/event_stats.h

@@ -1,3 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+
+Copyright (C) 2023 The Falco Authors.
+
+This file is dual licensed under either the MIT or GPL 2. See MIT.txt
+or GPL2.txt for full copies of the license.
+
+*/
 #pragma once
 
 /* These numbers must be updated when we add new events in the event table */

driver/modern_bpf/CMakeLists.txt

@@ -1,3 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0-only OR MIT
+#
+# Copyright (C) 2023 The Falco Authors.
+#
+# This file is dual licensed under either the MIT or GPL 2. See
+# MIT.txt or GPL.txt for full copies of the license.
+#
+
 option(MODERN_BPF_DEBUG_MODE "Enable BPF debug prints" OFF)
 option(MODERN_BPF_EXCLUDE_PROGS "Regex to exclude tail-called programs" "")
 # This is a temporary workaround to solve this regression https://github.com/falcosecurity/libs/issues/1157

driver/modern_bpf/definitions/struct_flavors.h

@@ -1,3 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2023 The Falco Authors.
+ *
+ * This file is dual licensed under either the MIT or GPL 2. See MIT.txt
+ * or GPL2.txt for full copies of the license.
+ */
+
 /* We need this header to keep track of all struct/field/enum changes between kernel versions */
 
 #ifndef __STRUCT_FLAVORS_H__

driver/modern_bpf/definitions/vmlinux.h

@@ -1,3 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2023 The Falco Authors.
+ *
+ * This file is dual licensed under either the MIT or GPL 2. See MIT.txt
+ * or GPL2.txt for full copies of the license.
+ */
+
 #if defined(__TARGET_ARCH_x86)
 #include "x86_64/vmlinux.h"
 #elif defined(__TARGET_ARCH_arm64)

driver/modern_bpf/programs/attached/events/sched_process_exit.bpf.c

@@ -1,3 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2023 The Falco Authors.
+ *
+ * This file is dual licensed under either the MIT or GPL 2. See MIT.txt
+ * or GPL2.txt for full copies of the license.
+ */
+
 #include <helpers/interfaces/variable_size_event.h>
 #include <driver/systype_compat.h>
 #include <helpers/interfaces/attached_programs.h>

driver/modern_bpf/programs/attached/events/sched_switch.bpf.c

@@ -1,3 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2023 The Falco Authors.
+ *
+ * This file is dual licensed under either the MIT or GPL 2. See MIT.txt
+ * or GPL2.txt for full copies of the license.
+ */
+
 #include <helpers/interfaces/fixed_size_event.h>
 #include <helpers/interfaces/attached_programs.h>
 

driver/ppm_api_version.h

@@ -1,3 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2023 The Falco Authors.
+ *
+ * This file is dual licensed under either the MIT or GPL 2. See MIT.txt
+ * or GPL2.txt for full copies of the license.
+ */
+
 #ifndef PPM_API_VERSION_H
 #define PPM_API_VERSION_H
 

driver/ppm_tp.c

@@ -1,3 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2023 The Falco Authors.
+ *
+ * This file is dual licensed under either the MIT or GPL 2. See MIT.txt
+ * or GPL2.txt for full copies of the license.
+ */
+
 #include "ppm_tp.h"
 
 const char *kmod_prog_names[] = {

driver/ppm_tp.h

@@ -1,3 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2023 The Falco Authors.
+ *
+ * This file is dual licensed under either the MIT or GPL 2. See MIT.txt
+ * or GPL2.txt for full copies of the license.
+ */
+
 #pragma once
 
 /* | name | path | */

driver/ppm_version.h

@@ -1,3 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2023 The Falco Authors.
+ *
+ * This file is dual licensed under either the MIT or GPL 2. See MIT.txt
+ * or GPL2.txt for full copies of the license.
+ */
+
 #ifndef PPM_VERSION_H_
 #define PPM_VERSION_H_
 

driver/systype_compat.h

@@ -1,3 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2023 The Falco Authors.
+ *
+ * This file is dual licensed under either the MIT or GPL 2. See MIT.txt
+ * or GPL2.txt for full copies of the license.
+ */
+
 #ifndef __SYSTYPE_COMPACT_H__
 #define __SYSTYPE_COMPACT_H__