From 7a94eba0b4d6de02e94832943e0fdee8d86066bd Mon Sep 17 00:00:00 2001
From: Benjamin Staneck <staneck@gmail.com>
Date: Sat, 9 May 2015 02:03:33 +0200
Subject: [PATCH] Port changes from pull request #5495 to the vb_5 module to
 fix #4815 here, too.

---
 plugins/providers/virtualbox/driver/version_5_0.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/plugins/providers/virtualbox/driver/version_5_0.rb b/plugins/providers/virtualbox/driver/version_5_0.rb
index b1e5dc6f4..d7d3b58df 100644
--- a/plugins/providers/virtualbox/driver/version_5_0.rb
+++ b/plugins/providers/virtualbox/driver/version_5_0.rb
@@ -496,10 +496,14 @@ module VagrantPlugins
 
         def share_folders(folders)
           folders.each do |folder|
+            hostpath = folder[:hostpath]
+            if Vagrant::Util::Platform.windows?
+              hostpath = Vagrant::Util::Platform.windows_unc_path(hostpath)
+            end
             args = ["--name",
               folder[:name],
               "--hostpath",
-              folder[:hostpath]]
+              hostpath]
             args << "--transient" if folder.key?(:transient) && folder[:transient]
 
             # Enable symlinks on the shared folder