Specify the GPL-3.0-only license explicitly

README.md

@@ -5,6 +5,7 @@ __(formerly kconfig-hardened-check)__<br /><br />
 [![functional test coverage](https://codecov.io/gh/a13xp0p0v/kernel-hardening-checker/graph/badge.svg?flag=functional_test)](https://app.codecov.io/gh/a13xp0p0v/kernel-hardening-checker?flags%5B0%5D=functional_test)<br />
 [![engine unit-test](https://github.com/a13xp0p0v/kernel-hardening-checker/workflows/engine%20unit-test/badge.svg)](https://github.com/a13xp0p0v/kernel-hardening-checker/actions/workflows/engine_unit-test.yml)
 [![unit-test coverage](https://codecov.io/gh/a13xp0p0v/kernel-hardening-checker/graph/badge.svg?flag=engine_unit-test)](https://app.codecov.io/gh/a13xp0p0v/kernel-hardening-checker?flags%5B0%5D=engine_unit-test)<br />
+[![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0)
 [![GitHub tag (latest by date)](https://img.shields.io/github/v/tag/a13xp0p0v/kernel-hardening-checker?label=release)](https://github.com/a13xp0p0v/kernel-hardening-checker/tags)
 
 ## Motivation
@@ -15,7 +16,9 @@ make our systems more secure.
 
 But nobody likes checking configs manually. So let the computers do their job!
 
-__kernel-hardening-checker__ (formerly __kconfig-hardened-check__) is a tool for checking the security hardening options of the Linux kernel. It supports checking:
+__kernel-hardening-checker__ (formerly __kconfig-hardened-check__) is a tool for checking the security hardening options of the Linux kernel. License: GPL-3.0.
+
+The tool supports checking:
 
   - Kconfig options (compile-time)
   - Kernel cmdline arguments (boot-time)

bin/kernel-hardening-checker

@@ -1,6 +1,13 @@
 #!/usr/bin/env python3
 
-# For using the tool without installation via setuptools
+"""
+This tool is for checking the security hardening options of the Linux kernel.
+
+SPDX-FileCopyrightText: Alexander Popov <[email protected]>
+SPDX-License-Identifier: GPL-3.0-only
+
+This file is for using the tool without installation via setuptools.
+"""
 
 import os
 import sys

kernel_hardening_checker/__init__.py

@@ -3,7 +3,8 @@
 """
 This tool is for checking the security hardening options of the Linux kernel.
 
-Author: Alexander Popov <[email protected]>
+SPDX-FileCopyrightText: Alexander Popov <[email protected]>
+SPDX-License-Identifier: GPL-3.0-only
 
 This module performs input/output.
 """

kernel_hardening_checker/checks.py

@@ -3,7 +3,8 @@
 """
 This tool is for checking the security hardening options of the Linux kernel.
 
-Author: Alexander Popov <[email protected]>
+SPDX-FileCopyrightText: Alexander Popov <[email protected]>
+SPDX-License-Identifier: GPL-3.0-only
 
 This module contains knowledge for checks.
 """

kernel_hardening_checker/engine.py

@@ -3,7 +3,8 @@
 """
 This tool is for checking the security hardening options of the Linux kernel.
 
-Author: Alexander Popov <[email protected]>
+SPDX-FileCopyrightText: Alexander Popov <[email protected]>
+SPDX-License-Identifier: GPL-3.0-only
 
 This module is the engine of checks.
 """

kernel_hardening_checker/test_engine.py

@@ -3,7 +3,8 @@
 """
 This tool is for checking the security hardening options of the Linux kernel.
 
-Author: Alexander Popov <[email protected]>
+SPDX-FileCopyrightText: Alexander Popov <[email protected]>
+SPDX-License-Identifier: GPL-3.0-only
 
 This module performs unit-testing of the kernel-hardening-checker engine.
 """

setup.py

@@ -3,7 +3,8 @@
 """
 This tool is for checking the security hardening options of the Linux kernel.
 
-Author: Alexander Popov <[email protected]>
+SPDX-FileCopyrightText: Alexander Popov <[email protected]>
+SPDX-License-Identifier: GPL-3.0-only
 
 This module performs installing of the kernel-hardening-checker package.
 """