include/ipc: Add GPLv3 notice

The ipc module does not have a license header, making it hard to tell
what license the code was published under if the file ever gets separated.
This commit adds a license header to the ipc module.

diff --git a/include/ipc.sh b/include/ipc.sh
index be6acabc9f88599acff8de756d64823276bd582f..bce6f08240a20fe21a094fd124b347293d4b6098 100644 (file)
--- a/include/ipc.sh
+++ b/include/ipc.sh
@@ -1,5 +1,21 @@
 #!/bin/bash
 
+# ipc.sh - Toolbox module for message-based IPC
+# Copyright (C) 2021 Matthias Kruk
+#
+# This program 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.
+#
+# This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+
 __init() {
        if ! include "json" "queue"; then
                return 1