From 72dca4ff98a354b00864ff3ec0fe244327222203 Mon Sep 17 00:00:00 2001
From: Michael Kerrisk <mtk.manpages@gmail.com>
Date: Sat, 18 Sep 2010 06:35:45 +0200
Subject: [PATCH] fcntl.2: Add feature test macro requirements for F_GETOWN 
 and  F_SETOWN

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---
 man2/fcntl.2 | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/man2/fcntl.2 b/man2/fcntl.2
index c9f31ec34..9656b47c5 100644
--- a/man2/fcntl.2
+++ b/man2/fcntl.2
@@ -1142,12 +1142,22 @@ Only the operations
 .BR F_GETFL ,
 .BR F_SETFL ,
 .BR F_GETLK ,
-.BR F_SETLK ,
+.BR F_SETLK
+and
 .BR F_SETLKW ,
-.BR F_GETOWN ,
+are specified in POSIX.1-2001.
+
+.BR F_GETOWN
 and
 .B F_SETOWN
 are specified in POSIX.1-2001.
+(To get their definitions, define
+.BR BSD_SOURCE ,
+or
+.BR _XOPEN_SOURCE
+with the value 500 or greater, or define
+.BR _POSIX_C_SOURCE
+with the value 200809L or greater.)
 
 .B F_DUPFD_CLOEXEC
 is specified in POSIX.1-2008.