synced_folders/smb: hash ID so it is short enough [GH-3219]

CHANGELOG.md

@@ -3,6 +3,8 @@
 BUG FIXES:
 
   - core: Vagrant won't collide with newer versions of Bundler [GH-3193]
+  - synced\_folders/smb: IDs of synced folders are hashed to work better
+      with VMware. [GH-3219]
 
 ## 1.5.1 (March 13, 2014)
 

plugins/synced_folders/smb/synced_folder.rb

@@ -1,3 +1,4 @@
+require "digest/md5"
 require "json"
 
 require "log4r"
@@ -52,7 +53,8 @@ module VagrantPlugins
         folders.each do |id, data|
           hostpath = data[:hostpath]
 
-          data[:smb_id] ||= "#{machine.id}-#{id.gsub("/", "-")}"
+          data[:smb_id] ||= Digest::MD5.hexdigest(
+            "#{machine.id}-#{id.gsub("/", "-")}")
 
           args = []
           args << "-path" << hostpath.gsub("/", "\\")