From b95b21c7abe4ba2ee5fb83d382bc8c2869a93a42 Mon Sep 17 00:00:00 2001
From: Kevin Lo <kevlo@FreeBSD.org>
Date: Fri, 16 Nov 2012 09:56:25 +0000
Subject: [PATCH] Document that rtprio(2) and rtprio_thread(2) can fail with
 EFAULT due to the invoked copyout(9).

Reviewed by:	davidxu
---
 lib/libc/sys/rtprio.2 | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/lib/libc/sys/rtprio.2 b/lib/libc/sys/rtprio.2
index ac78b5099514..f30ed225475b 100644
--- a/lib/libc/sys/rtprio.2
+++ b/lib/libc/sys/rtprio.2
@@ -145,13 +145,21 @@ Higher real/idle priority threads
 preempt lower real/idle priority threads.
 Threads of equal real/idle priority are run round-robin.
 .Sh RETURN VALUES
-.Rv -std rtprio
+.Rv -std rtprio rtprio_thread
 .Sh ERRORS
 The
 .Fn rtprio
-system call
+and
+.Fn rtprio_thread
+system calls
 will fail if:
 .Bl -tag -width Er
+.It Bq Er EFAULT
+The rtp pointer passed to
+.Fn rtprio
+or
+.Fn rtprio_thread
+was invalid.
 .It Bq Er EINVAL
 The specified
 .Fa prio