license: add note that some files might have different license

diff --git a/COPYING b/COPYING
index 74f584b1183763c060484392c10f5cac2d39c08d..f390d92088ab7354c0b68c6be4a955a59f45229c 100644 (file)
--- a/COPYING
+++ b/COPYING
@@ -1,3 +1,7 @@
+Unless specifically indicated otherwise in a file or directory,
+files are licensed under GNU GPL license either version 3, or
+(at your option) any later version.
+
 SPDX-License-Identifier: GPL-3.0-or-later
 SPDX-URL: https://spdx.org/licenses/GPL-3.0-or-later.html
 License-Text: