Vagrant shared folder permissions with VirtualBox

If you're using Vagrant with VirtualBox you will find that in your shared /vagrant folder that any chown/chmod changes you run won't have any affect. This is a bit weird but you can work around it in your Vagrantfile by adding the following line:

config.vm.synced_folder ".", "/vagrant", :extra => "dmode=755,fmode=755

Depending on your needs you may have to change the octal values.

Source: https://github.com/mitchellh/vagrant/issues/897