From b628191f72778a4ffb3395eeea59fe60300b19ca Mon Sep 17 00:00:00 2001
From: Guido Trotter <ultrotter@google.com>
Date: Thu, 17 Jun 2010 09:42:36 +0100
Subject: [PATCH] AsyncAwaker: use shutdown on the socketpair
This makes sure the out_socket can only be used for writing, and the
in_socket for reading.
Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>
---
lib/daemon.py | 2 ++
1 file changed, 2 insertions(+)
diff --git a/lib/daemon.py b/lib/daemon.py
index 593e14641..84d4a4391 100644
--- a/lib/daemon.py
+++ b/lib/daemon.py
@@ -339,6 +339,8 @@ class AsyncAwaker(GanetiBaseAsyncoreDispatcher):
(self.in_socket, self.out_socket) = socket.socketpair(socket.AF_UNIX,
socket.SOCK_STREAM)
self.in_socket.setblocking(0)
+ self.in_socket.shutdown(socket.SHUT_WR)
+ self.out_socket.shutdown(socket.SHUT_RD)
self.set_socket(self.in_socket)
self.need_signal = True
self.signal_fn = signal_fn
--
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