General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

13 files changed, 39 insertions, 13 deletions

diff --git a/usr.bin/talk/ctl.c b/usr.bin/talk/ctl.c
index 079d2a2ba9782..abfd5e6b30ed7 100644
--- a/usr.bin/talk/ctl.c
+++ b/usr.bin/talk/ctl.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
diff --git a/usr.bin/talk/ctl_transact.c b/usr.bin/talk/ctl_transact.c
index 9ac684289b2b6..650134da6ca6c 100644
--- a/usr.bin/talk/ctl_transact.c
+++ b/usr.bin/talk/ctl_transact.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
diff --git a/usr.bin/talk/display.c b/usr.bin/talk/display.c
index a72b2e1d56b11..9987194fcbb99 100644
--- a/usr.bin/talk/display.c
+++ b/usr.bin/talk/display.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
diff --git a/usr.bin/talk/get_addrs.c b/usr.bin/talk/get_addrs.c
index c81229853cf4a..53b841cee2cac 100644
--- a/usr.bin/talk/get_addrs.c
+++ b/usr.bin/talk/get_addrs.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
diff --git a/usr.bin/talk/get_names.c b/usr.bin/talk/get_names.c
index b79adeccd8cb5..3ca362ad9bffc 100644
--- a/usr.bin/talk/get_names.c
+++ b/usr.bin/talk/get_names.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
diff --git a/usr.bin/talk/init_disp.c b/usr.bin/talk/init_disp.c
index 7cdc41b057f9a..a3f125792254a 100644
--- a/usr.bin/talk/init_disp.c
+++ b/usr.bin/talk/init_disp.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
diff --git a/usr.bin/talk/invite.c b/usr.bin/talk/invite.c
index 141f03eccf93d..8f811a5c55e47 100644
--- a/usr.bin/talk/invite.c
+++ b/usr.bin/talk/invite.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
diff --git a/usr.bin/talk/io.c b/usr.bin/talk/io.c
index 8ed2a85ee0740..9cf7ad8346eb9 100644
--- a/usr.bin/talk/io.c
+++ b/usr.bin/talk/io.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
diff --git a/usr.bin/talk/look_up.c b/usr.bin/talk/look_up.c
index 3019f0fa8791d..1b6ba327c59f4 100644
--- a/usr.bin/talk/look_up.c
+++ b/usr.bin/talk/look_up.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
diff --git a/usr.bin/talk/msgs.c b/usr.bin/talk/msgs.c
index 5a40962c6e9cc..e0886e9477f7f 100644
--- a/usr.bin/talk/msgs.c
+++ b/usr.bin/talk/msgs.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
diff --git a/usr.bin/talk/talk.c b/usr.bin/talk/talk.c
index 558095e4bde40..4b7e748e2f099 100644
--- a/usr.bin/talk/talk.c
+++ b/usr.bin/talk/talk.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
diff --git a/usr.bin/talk/talk.h b/usr.bin/talk/talk.h
index 5554c26c2b730..04960b8a52c4f 100644
--- a/usr.bin/talk/talk.h
+++ b/usr.bin/talk/talk.h
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
diff --git a/usr.bin/talk/talk_ctl.h b/usr.bin/talk/talk_ctl.h
index f1a235009cd7c..77f6d1b8a0743 100644
--- a/usr.bin/talk/talk_ctl.h
+++ b/usr.bin/talk/talk_ctl.h
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
  *