From 8818042ff2ecd155adb5c248a22de2dbe5d9c2a9 Mon Sep 17 00:00:00 2001
From: Edward Tomasz Napierala <trasz@FreeBSD.org>
Date: Fri, 12 Apr 2013 16:36:18 +0000
Subject: Fix usage for soreceive(9) - uio must always be non-NULL.

MFC after:	1 week
---
 share/man/man9/socket.9 | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/share/man/man9/socket.9 b/share/man/man9/socket.9
index 8320d84914c2..f2cb5bae5b0d 100644
--- a/share/man/man9/socket.9
+++ b/share/man/man9/socket.9
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd December 14, 2006
+.Dd April 12, 2013
 .Dt SOCKET 9
 .Os
 .Sh NAME
@@ -208,12 +208,19 @@ Data may be retrieved directly to kernel or user memory via the
 argument, or as an mbuf chain returned to the caller via
 .Fa mp0 ,
 avoiding a data copy.
-Only one of the
+The
 .Fa uio
-or
-.Fa mp0
-pointers may be
+must always be
 .Pf non- Dv NULL .
+If
+.Fa mp0
+is
+.Pf non- Dv NULL ,
+only the
+.Pf uio_resid
+of
+.Fa uio
+is used.
 The caller may optionally retrieve a socket address on a protocol with the
 .Dv PR_ADDR
 capability by providing storage via
-- 
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