350         case EC_IOCTL_DOMAIN_COUNT:

   351             retval = ec_master_domain_count(master);

   352             break;

   353 

   354         case EC_IOCTL_DOMAIN:

   355             {

   356                 ec_ioctl_domain_t data;

   357                 const ec_domain_t *domain;

   358 

   359                 if (copy_from_user(&data, (void __user *) arg, sizeof(data))) {

   360                     retval = -EFAULT;

   361                     break;

   362                 }

   363                 

   364                 if (!(domain = ec_master_find_domain(master, data.index))) {

   365                     EC_ERR("Domain %u does not exist!\n", data.index);

   366                     retval = -EINVAL;

   367                     break;

   368                 }

   369 

   370                 data.data_size = domain->data_size;

   371                 data.logical_base_address = domain->logical_base_address;

   372                 data.working_counter = domain->working_counter;

   373                 data.expected_working_counter = domain->expected_working_counter;

   374 

   375                 if (copy_to_user((void __user *) arg, &data, sizeof(data))) {

   376                     retval = -EFAULT;

   377                     break;

   378                 }

   379                 break;

   380             }

   381