surf_storage_model->extension.storage.stat = storage_action_stat;
surf_storage_model->extension.storage.unlink = storage_action_unlink;
surf_storage_model->extension.storage.ls = storage_action_ls;
surf_storage_model->extension.storage.stat = storage_action_stat;
surf_storage_model->extension.storage.unlink = storage_action_unlink;
surf_storage_model->extension.storage.ls = storage_action_ls;