From dd612920059344dccf698461e708c597dae79810 Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@osmocom.org>
Date: Mon, 7 Nov 2022 20:06:18 +0100
Subject: [PATCH] add copyright/license statement to all source files

---
 src/dahdi.c       | 19 +++++++++++++++++++
 src/isdntap.c     | 19 +++++++++++++++++++
 src/q931.c        | 18 ++++++++++++++++++
 src/q931.h        | 18 ++++++++++++++++++
 src/q931_decode.c | 18 ++++++++++++++++++
 5 files changed, 92 insertions(+)

diff --git a/src/dahdi.c b/src/dahdi.c
index 032b53d..4fff689 100644
--- a/src/dahdi.c
+++ b/src/dahdi.c
@@ -1,3 +1,22 @@
+/* dahdi.c - support for DAHDI TDM interfaces
+ *
+ * (C) 2022 by Harald Welte <laforge@osmocom.org>
+ *
+ * All Rights Reserved
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * 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 2 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.
+ */
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <fcntl.h>
diff --git a/src/isdntap.c b/src/isdntap.c
index c046391..b086a26 100644
--- a/src/isdntap.c
+++ b/src/isdntap.c
@@ -1,3 +1,22 @@
+/* isdntap.c - Core ISDN tapping/tracing code
+ *
+ * (C) 2022 by Harald Welte <laforge@osmocom.org>
+ *
+ * All Rights Reserved
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * 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 2 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.
+ */
+
 #include <errno.h>
 #include <fcntl.h>
 #include <unistd.h>
diff --git a/src/q931.c b/src/q931.c
index b63b472..636b875 100644
--- a/src/q931.c
+++ b/src/q931.c
@@ -1,3 +1,21 @@
+/* q931.c - Q.931 protocol definitions
+ *
+ * (C) 2022 by Harald Welte <laforge@osmocom.org>
+ *
+ * All Rights Reserved
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * 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 2 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.
+ */
 
 #include <osmocom/core/utils.h>
 #include "q931.h"
diff --git a/src/q931.h b/src/q931.h
index fad287f..703231c 100644
--- a/src/q931.h
+++ b/src/q931.h
@@ -1,4 +1,22 @@
 #pragma once
+/* q931.c - Q.931 protocol definitions
+ *
+ * (C) 2022 by Harald Welte <laforge@osmocom.org>
+ *
+ * All Rights Reserved
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * 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 2 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.
+ */
 
 #include <stdint.h>
 #include <stdbool.h>
diff --git a/src/q931_decode.c b/src/q931_decode.c
index 687e14f..2263c25 100644
--- a/src/q931_decode.c
+++ b/src/q931_decode.c
@@ -1,3 +1,21 @@
+/* q931_decode.c - minimalistic Q.931 protocol decoder
+ *
+ * (C) 2022 by Harald Welte <laforge@osmocom.org>
+ *
+ * All Rights Reserved
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * 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 2 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.
+ */
 
 #include <errno.h>