From a9db6c1ba3817c79f3f9f74976ffe17f8b2df1c2 Mon Sep 17 00:00:00 2001
From: Michael Kerrisk <mtk.manpages@gmail.com>
Date: Thu, 12 Aug 2021 02:47:23 +0200
Subject: [PATCH] open.2: Clarify that openat()'s dirfd must be opened with
 O_RDONLY or O_PATH

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---
 man2/open.2 | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/man2/open.2 b/man2/open.2
index a4f774b2c..711fd96b8 100644
--- a/man2/open.2
+++ b/man2/open.2
@@ -959,6 +959,13 @@ referred to by the file descriptor
 the calling process, as is done by
 .BR open ()
 for a relative pathname).
+In this case,
+.I dirfd
+must be a directory that was opened for reading
+.RB ( O_RDONLY )
+or using the
+.B O_PATH
+flag.
 .\"
 .SS openat2(2)
 The