11 files changed, 23 insertions, 1 deletions
diff --git a/lib/libc/stdlib/getenv.c b/lib/libc/stdlib/getenv.c
index e90eccd3d3d3..5d445e18d93b 100644
--- a/lib/libc/stdlib/getenv.c
+++ b/lib/libc/stdlib/getenv.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2007-2009 Sean C. Farley <scf@FreeBSD.org>
  * All rights reserved.
  *
diff --git a/lib/libc/stdlib/hcreate.c b/lib/libc/stdlib/hcreate.c
index 2d5d943a4d82..d2b7c1cd8cac 100644
--- a/lib/libc/stdlib/hcreate.c
+++ b/lib/libc/stdlib/hcreate.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2015 Nuxi, https://nuxi.nl/
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/lib/libc/stdlib/imaxabs.c b/lib/libc/stdlib/imaxabs.c
index 35e3dee79d36..7af863502ee5 100644
--- a/lib/libc/stdlib/imaxabs.c
+++ b/lib/libc/stdlib/imaxabs.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2001 Mike Barcroft <mike@FreeBSD.org>
  * All rights reserved.
  *
diff --git a/lib/libc/stdlib/imaxdiv.c b/lib/libc/stdlib/imaxdiv.c
index adcab0b14dbb..4d9f77546b9a 100644
--- a/lib/libc/stdlib/imaxdiv.c
+++ b/lib/libc/stdlib/imaxdiv.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2001 Mike Barcroft <mike@FreeBSD.org>
  * All rights reserved.
  *
diff --git a/lib/libc/stdlib/llabs.c b/lib/libc/stdlib/llabs.c
index 2bfbada80d93..6b405f0314d1 100644
--- a/lib/libc/stdlib/llabs.c
+++ b/lib/libc/stdlib/llabs.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2001 Mike Barcroft <mike@FreeBSD.org>
  * All rights reserved.
  *
diff --git a/lib/libc/stdlib/lldiv.c b/lib/libc/stdlib/lldiv.c
index 197b48f3f51e..47c13ee30e11 100644
--- a/lib/libc/stdlib/lldiv.c
+++ b/lib/libc/stdlib/lldiv.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2001 Mike Barcroft <mike@FreeBSD.org>
  * All rights reserved.
  *
diff --git a/lib/libc/stdlib/ptsname.c b/lib/libc/stdlib/ptsname.c
index 3e4d4c096ef5..328528537ab5 100644
--- a/lib/libc/stdlib/ptsname.c
+++ b/lib/libc/stdlib/ptsname.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2008 Ed Schouten <ed@FreeBSD.org>
  * All rights reserved.
  *
diff --git a/lib/libc/stdlib/quick_exit.c b/lib/libc/stdlib/quick_exit.c
index 4d81a35f5375..676dc287a511 100644
--- a/lib/libc/stdlib/quick_exit.c
+++ b/lib/libc/stdlib/quick_exit.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2011 David Chisnall
  * All rights reserved.
  *
diff --git a/lib/libc/stdlib/reallocf.c b/lib/libc/stdlib/reallocf.c
index a85b5a3c036b..470d55bd736c 100644
--- a/lib/libc/stdlib/reallocf.c
+++ b/lib/libc/stdlib/reallocf.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 1998, M. Warner Losh <imp@freebsd.org>
  * All rights reserved.
  *
diff --git a/lib/libc/stdlib/realpath.c b/lib/libc/stdlib/realpath.c
index d19f641cfdee..9b0ba94473cb 100644
--- a/lib/libc/stdlib/realpath.c
+++ b/lib/libc/stdlib/realpath.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Copyright (c) 2003 Constantin S. Svintsoff <kostik@iclub.nsu.ru>
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/lib/libc/stdlib/strfmon.c b/lib/libc/stdlib/strfmon.c
index af038fe17caf..035b17136c3f 100644
--- a/lib/libc/stdlib/strfmon.c
+++ b/lib/libc/stdlib/strfmon.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org>
  * All rights reserved.
  *