From a397e601251c00aa121aa11313f11b08bda19984 Mon Sep 17 00:00:00 2001
From: "Todd C. Miller" <millert@cvs.openbsd.org>
Date: Fri, 18 Feb 2011 13:22:54 +0000
Subject: An attempt to open an append-only file without O_APPEND results in
 EPERM. OK jmc@ guenther@

---
 lib/libc/sys/open.2 | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

(limited to 'lib/libc/sys')

diff --git a/lib/libc/sys/open.2 b/lib/libc/sys/open.2
index 79cb4c89770..2190c88295d 100644
--- a/lib/libc/sys/open.2
+++ b/lib/libc/sys/open.2
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: open.2,v 1.35 2010/09/07 21:26:51 millert Exp $
+.\"	$OpenBSD: open.2,v 1.36 2011/02/18 13:22:53 millert Exp $
 .\"	$NetBSD: open.2,v 1.8 1995/02/27 12:35:14 cgd Exp $
 .\"
 .\" Copyright (c) 1980, 1991, 1993
@@ -30,7 +30,7 @@
 .\"
 .\"     @(#)open.2	8.2 (Berkeley) 11/16/93
 .\"
-.Dd $Mdocdate: September 7 2010 $
+.Dd $Mdocdate: February 18 2011 $
 .Dt OPEN 2
 .Os
 .Sh NAME
@@ -294,6 +294,13 @@ points outside the process's allocated address space.
 and
 .Dv O_EXCL
 were specified and the file exists.
+.It Bq Er EPERM
+The file named by
+.Fa path
+is flagged append-only but
+.Dv O_APPEND
+was not specified in
+.Fa flags .
 .It Bq Er EOPNOTSUPP
 An attempt was made to open a socket (not currently implemented).
 .It Bq Er EBUSY
@@ -301,6 +308,7 @@ An attempt was made to open a terminal device that requires exclusive
 access and the specified device has already be opened.
 .El
 .Sh SEE ALSO
+.Xr chflags 2 ,
 .Xr chmod 2 ,
 .Xr close 2 ,
 .Xr dup 2 ,
-- 
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