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=== Description (from pull-request) ===
I think (?) this may be related to our hanging monitor bug. Let's do this
anyway, as it's probably a good idea.
Signed-off-by: Tycho Andersen <tycho.ander...@canonical.com>
From fcd59cf0c84f1523768da0377d260c65c090e650 Mon Sep 17 00:00:00 2001
From: Tycho Andersen <tycho.ander...@canonical.com>
Date: Fri, 6 May 2016 11:21:39 -0500
Subject: [PATCH] sync: fail on unexpected message sizes
I think (?) this may be related to our hanging monitor bug. Let's do this
anyway, as it's probably a good idea.
Signed-off-by: Tycho Andersen <tycho.ander...@canonical.com>
---
src/lxc/sync.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/src/lxc/sync.c b/src/lxc/sync.c
index f06d302..82f68e3 100644
--- a/src/lxc/sync.c
+++ b/src/lxc/sync.c
@@ -47,6 +47,11 @@ static int __sync_wait(int fd, int sequence)
if (!ret)
return 0;
+ if (ret != sizeof(sync)) {
+ ERROR("unexpected sync size: %d expected %lu", ret,
sizeof(sync));
+ return -1;
+ }
+
if (sync == LXC_SYNC_ERROR) {
ERROR("An error occurred in another process "
"(expected sequence number %d)", sequence);
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