642 	TW_Ioctl_Driver_Command driver_command;  in twa_chrdev_ioctl()  local
662 	if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command)))  in twa_chrdev_ioctl()
666 	if (driver_command.buffer_length > TW_MAX_SECTORS * 2048) {  in twa_chrdev_ioctl()
672 	data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511;  in twa_chrdev_ioctl()
684 	if (copy_from_user(tw_ioctl, argp, driver_command.buffer_length + sizeof(TW_Ioctl_Buf_Apache) - 1))  in twa_chrdev_ioctl()
737 		tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
745 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
748 				tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
751 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
754 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
763 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
766 				tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
770 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
773 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
782 		tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
786 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
792 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
800 			if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER)  in twa_chrdev_ioctl()
802 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
811 		tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
815 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
821 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
829 			if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER)  in twa_chrdev_ioctl()
831 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
845 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
848 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_LOCKED;  in twa_chrdev_ioctl()
855 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
857 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NOT_LOCKED;  in twa_chrdev_ioctl()
866 …if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length - 1) =…  in twa_chrdev_ioctl()