Add virtualbox driver method for obtaining vm information

plugins/providers/virtualbox/cap/configure_disks.rb

@@ -8,6 +8,7 @@ module VagrantPlugins
         # @param [VagrantPlugins::Kernel_V2::VagrantConfigDisk] defined_disks
         def self.configure_disks(machine, defined_disks)
           return nil if defined_disks.empty?
+          disks = current_vm_disks(machine)
         end
 
         protected
@@ -15,13 +16,15 @@ module VagrantPlugins
         # Maybe move these into the virtualbox driver??
         # Versioning might be an issue :shrug:
 
-        def current_vm_disks(driver)
+        def self.current_vm_disks(machine)
+          disks = {}
+          info = machine.provider.driver.show_vm_info(machine.id)
         end
 
-        def vmdk_to_vdi(driver)
+        def self.vmdk_to_vdi(driver)
         end
 
-        def vdi_to_vmdk(driver)
+        def self.vdi_to_vmdk(driver)
         end
       end
     end

plugins/providers/virtualbox/driver/base.rb

@@ -368,6 +368,21 @@ module VagrantPlugins
         def vm_exists?(uuid)
         end
 
+        # Returns a hash of information about a given virtual machine
+        #
+        # @param [String] uuid
+        # @return [Hash] info
+        def show_vm_info(uuid)
+          info = {}
+          execute('showvminfo', uuid, '--machinereadable', retryable: true).split("\n").each do |line|
+            parts = line.partition('=')
+            key = parts.first.gsub('"', '')
+            value = parts.last.gsub('"', '')
+            info[key] = value
+          end
+          info
+        end
+
         # Execute the given subcommand for VBoxManage and return the output.
         def execute(*command, &block)
           # Get the options hash if it exists