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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Elliott Hughes <enh@google.com>,
        Greg Hackmann <ghackmann@google.com>
Subject: [PATCH 3.18 37/52] eventpoll.h: add missing epoll event masks
Date:   Mon, 29 Jan 2018 13:56:55 +0100
Message-Id: <20180129123629.814709665@linuxfoundation.org>
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3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Greg KH <gregkh@linuxfoundation.org>

commit 7e040726850a106587485c21bdacc0bfc8a0cbed upstream.

[resend due to me forgetting to cc: linux-api the first time around I
posted these back on Feb 23]

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

For some reason these values are not in the uapi header file, so any
libc has to define it themselves.  To prevent them from needing to do
this, just have the kernel provide the correct values.

Reported-by: Elliott Hughes <enh@google.com>
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 include/uapi/linux/eventpoll.h |   13 +++++++++++++
 1 file changed, 13 insertions(+)

--- a/include/uapi/linux/eventpoll.h
+++ b/include/uapi/linux/eventpoll.h
@@ -26,6 +26,19 @@
 #define EPOLL_CTL_DEL 2
 #define EPOLL_CTL_MOD 3
 
+/* Epoll event masks */
+#define EPOLLIN		0x00000001
+#define EPOLLPRI	0x00000002
+#define EPOLLOUT	0x00000004
+#define EPOLLERR	0x00000008
+#define EPOLLHUP	0x00000010
+#define EPOLLRDNORM	0x00000040
+#define EPOLLRDBAND	0x00000080
+#define EPOLLWRNORM	0x00000100
+#define EPOLLWRBAND	0x00000200
+#define EPOLLMSG	0x00000400
+#define EPOLLRDHUP	0x00002000
+
 /*
  * Request the handling of system wakeup events so as to prevent system suspends
  * from happening while those events are being processed.