From c8ae41fb03c43c3a00a144d92e904dc1c28b3fb5 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@swtch.com>
Date: Fri, 14 Aug 2009 22:49:38 -0700
Subject: more licensing

---
 include/libc.h   | 4 ++++
 include/u.h      | 2 ++
 src/lib9/LICENSE | 2 ++
 3 files changed, 8 insertions(+)

diff --git a/include/libc.h b/include/libc.h
index 0427dadf..af4422d1 100644
--- a/include/libc.h
+++ b/include/libc.h
@@ -1,3 +1,7 @@
+// This file originated as Plan 9's /sys/include/libc.h.
+// The plan9port-specific changes may be distributed
+// using the license in ../src/lib9/LICENSE.
+
 /*
  * Lib9 is miscellany from the Plan 9 C library that doesn't
  * fit into libutf or into libfmt, but is still missing from traditional
diff --git a/include/u.h b/include/u.h
index 3a25d01c..5f53736f 100644
--- a/include/u.h
+++ b/include/u.h
@@ -1,3 +1,5 @@
+// See ../src/lib9/LICENSE
+
 #ifndef _U_H_
 #define _U_H_ 1
 #if defined(__cplusplus)
diff --git a/src/lib9/LICENSE b/src/lib9/LICENSE
index a8957625..12e3eba5 100644
--- a/src/lib9/LICENSE
+++ b/src/lib9/LICENSE
@@ -4,6 +4,8 @@ terms of the simpler MIT-style license at the bottom of this file.
 The files listed below were written from scrach for plan9port
 and do not derive from the Plan 9 from Bell Labs distribution.
 
+	../../include/u.h
+	non-Plan 9 code in ../../include/libc.h
 	_exits.c
 	_p9dialparse.c
 	_p9dir.c
-- 
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