From 2acaaff801a93414d3fb3d1d3a0f27aeec605ec7 Mon Sep 17 00:00:00 2001
From: Seth Vargo <sethvargo@gmail.com>
Date: Mon, 18 Jul 2016 21:59:18 -0400
Subject: [PATCH] state_file: fsync and binmode

---
 lib/vagrant/plugin/state_file.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/vagrant/plugin/state_file.rb b/lib/vagrant/plugin/state_file.rb
index 516f7be1c..fc9060849 100644
--- a/lib/vagrant/plugin/state_file.rb
+++ b/lib/vagrant/plugin/state_file.rb
@@ -94,9 +94,11 @@ module Vagrant
       # This saves the state back into the state file.
       def save!
         Tempfile.open(@path.basename.to_s, @path.dirname.to_s) do |f|
+          f.binmode
           f.write(JSON.dump(@data))
-          f.chmod(0644)
+          f.fsync
           f.close
+          f.chmod(0644)
           FileUtils.mv(f.path, @path)
         end
       end