document EWOULDBLOCK; freebsd

diff --git a/lib/libc/sys/open.2 b/lib/libc/sys/open.2
index 5031199..860340e 100644 (file)
--- a/lib/libc/sys/open.2
+++ b/lib/libc/sys/open.2
@@ -1,4 +1,4 @@
-.\"    $OpenBSD: open.2,v 1.13 1999/06/29 14:10:11 aaron Exp $
+.\"    $OpenBSD: open.2,v 1.14 2000/04/10 19:36:02 deraadt Exp $
 .\"    $NetBSD: open.2,v 1.8 1995/02/27 12:35:14 cgd Exp $
 .\"
 .\" Copyright (c) 1980, 1991, 1993
@@ -203,6 +203,13 @@ operation was interrupted by a signal.
 or
 .Dv O_EXLOCK
 is specified but the underlying filesystem does not support locking.
+.It Bq Er EWOULDBLOCK
+.Dv O_NONBLOCK
+and one of
+.Dv O_SHLOCK
+or
+.Dv O_EXLOCK
+is specified and the file is locked.
 .It Bq Er ENOSPC
 .Dv O_CREAT
 is specified,