Can now configure what shell to sudo with (default: bash)

lib/vagrant/config/ssh.rb

@@ -11,6 +11,11 @@ class SSHConfig < Base
       attr_writer :private_key_path
       attr_accessor :forward_agent
       attr_accessor :forward_x11
+      attr_accessor :sudo_shell
+
+      def initialize
+        @sudo_shell = "bash"
+      end
 
       def private_key_path
         File.expand_path(@private_key_path, env.root_path)

lib/vagrant/ssh.rb

@@ -79,7 +79,7 @@ def execute(opts={})
                                    :user_known_hosts_file => [],
                                    :paranoid => false,
                                    :config => false)) do |ssh|
-          yield SSH::Session.new(ssh)
+          yield SSH::Session.new(ssh, env)
         end
       end
     rescue Errno::ECONNREFUSED

lib/vagrant/ssh/session.rb

@@ -7,9 +7,11 @@ class Session
       include Util::Retryable
 
       attr_reader :session
+      attr_reader :env
 
-      def initialize(session)
+      def initialize(session, env)
         @session = session
+        @env = env
       end
 
       # Executes a given command and simply returns true/false if the
@@ -32,7 +34,7 @@ def test?(command)
       # of `sudo`.
       def sudo!(commands, options=nil, &block)
         channel = session.open_channel do |ch|
-          ch.exec("sudo bash -l") do |ch2, success|
+          ch.exec("sudo #{env.config.ssh.sudo_shell} -l") do |ch2, success|
             # Output each command as if they were entered on the command line
             [commands].flatten.each do |command|
               ch2.send_data "#{command}\n"

test/vagrant/ssh/session_test.rb

@@ -3,9 +3,10 @@
 class SshSessionTest < Test::Unit::TestCase
   setup do
     @session = mock("session")
+    @env = vagrant_env
 
     @klass = Vagrant::SSH::Session
-    @instance = @klass.new(@session)
+    @instance = @klass.new(@session, @env)
   end
 
   context "exec!" do