1 files changed, 18 insertions, 0 deletions
diff --git a/sysfs.c b/sysfs.c
index 6ea7701..5a50b0e 100644
--- a/sysfs.c
+++ b/sysfs.c
@@ -1,3 +1,21 @@
+/*  This file is part of cputemp2maxfreq.
+
+    Copyright (C) 2023-2024 pa4wdh
+
+    cputemp2maxfreq 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 3 of the License , or
+    (at your option) any later version.
+
+    cputemp2maxfreq 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 cputemp2maxfreq; see the file COPYING.  If not, see
+    <http://www.gnu.org/licenses>.
+*/
 #include <stdio.h>
 #include <fcntl.h>
 #include <unistd.h>