:create flag on shared folders will create on host if it doesnt exist [GH-604]

CHANGELOG.md

@@ -31,6 +31,8 @@
   - Added a "--plain" flag to `vagrant ssh` which will cause Vagrant to not
     perform any authentication. It will simply `ssh` into the proper IP and
     port of the virtual machine.
+  - If a shared folder now has a `:create` flag set to `true`, the path on the
+    host will be created if it doesn't exist.
   - Removed Thor as a dependency for the command line interfaces. This resulted
     in general speed increases across all command line commands.
   - Linux uses `shutdown -h` instead of `halt` to hopefully more consistently

lib/vagrant/action/vm/share_folders.rb

@@ -1,15 +1,20 @@
+require 'pathname'
+
+require 'log4r'
+
 module Vagrant
   module Action
     module VM
       class ShareFolders
         def initialize(app, env)
-          @app = app
-          @env = env
+          @logger = Log4r::Logger.new("vagrant::action::vm::share_folders")
+          @app    = app
         end
 
         def call(env)
           @env = env
 
+          prepare_folders
           create_metadata
 
           @app.call(env)
@@ -32,6 +37,20 @@ module Vagrant
           end
         end
 
+        # Prepares the shared folders by verifying they exist and creating them
+        # if they don't.
+        def prepare_folders
+          shared_folders.each do |name, options|
+            hostpath = Pathname.new(options[:hostpath]).expand_path(@env[:root_path])
+
+            if !hostpath.directory? && options[:create]
+              # Host path doesn't exist, so let's create it.
+              @logger.debug("Host path doesn't exist, creating: #{hostpath}")
+              hostpath.mkpath
+            end
+          end
+        end
+
         def create_metadata
           @env[:ui].info I18n.t("vagrant.actions.vm.share_folders.creating")
 

lib/vagrant/config/vm.rb

@@ -1,3 +1,5 @@
+require 'pathname'
+
 require 'vagrant/config/vm/sub_vm'
 require 'vagrant/config/vm/provisioner'
 
@@ -52,8 +54,9 @@ Please change your configurations to match this new syntax.
 
       def share_folder(name, guestpath, hostpath, opts=nil)
         @shared_folders[name] = {
-          :guestpath => guestpath,
-          :hostpath => hostpath,
+          :guestpath => guestpath.to_s,
+          :hostpath => hostpath.to_s,
+          :create => false,
           :owner => nil,
           :group => nil,
           :nfs   => false
@@ -133,7 +136,9 @@ do before is certainly still possible with `VBoxManage` as well.
         errors.add(I18n.t("vagrant.config.vm.base_mac_invalid")) if env.boxes.find(box) && !base_mac
 
         shared_folders.each do |name, options|
-          if !File.directory?(File.expand_path(options[:hostpath].to_s, env.root_path))
+          hostpath = Pathname.new(options[:hostpath]).expand_path(env.root_path)
+
+          if !hostpath.directory? && !options[:create]
             errors.add(I18n.t("vagrant.config.vm.shared_folder_hostpath_missing",
                        :name => name,
                        :path => options[:hostpath]))