From 0920e246c699770e57b13150e8b18fb73a484a76 Mon Sep 17 00:00:00 2001
From: rwatson <rwatson@FreeBSD.org>
Date: Sun, 14 Aug 2011 12:41:44 +0000
Subject: Cross-reference cap_new(2) from dup(2), as they have similar
 functionality.

Approved by:	re (kib)
---
 lib/libc/sys/dup.2 | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'lib')

diff --git a/lib/libc/sys/dup.2 b/lib/libc/sys/dup.2
index c87b386..f6f6f46 100644
--- a/lib/libc/sys/dup.2
+++ b/lib/libc/sys/dup.2
@@ -28,7 +28,7 @@
 .\"     @(#)dup.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd June 4, 1993
+.Dd August 14, 2011
 .Dt DUP 2
 .Os
 .Sh NAME
@@ -115,6 +115,11 @@ and
 is a valid descriptor, then
 .Fn dup2
 is successful, and does nothing.
+.Pp
+The related
+.Xr cap_new 2
+system call allows file descriptors to be duplicated with restrictions on
+their use.
 .Sh RETURN VALUES
 The value -1 is returned if an error occurs in either call.
 The external variable
@@ -139,6 +144,7 @@ Too many descriptors are active.
 .El
 .Sh SEE ALSO
 .Xr accept 2 ,
+.Xr cap_new 2 ,
 .Xr close 2 ,
 .Xr fcntl 2 ,
 .Xr getdtablesize 2 ,
-- 
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