647 	TW_Ioctl_Driver_Command driver_command;  in twa_chrdev_ioctl()  local
667 	if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command)))  in twa_chrdev_ioctl()
671 	if (driver_command.buffer_length > TW_MAX_SECTORS * 2048) {  in twa_chrdev_ioctl()
677 	data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511;  in twa_chrdev_ioctl()
691 	if (copy_from_user(tw_ioctl, argp, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length))  in twa_chrdev_ioctl()
744 		tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
752 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
755 				tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
758 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
761 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
770 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
773 				tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
777 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
780 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
789 		tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
793 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
799 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
807 			if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER)  in twa_chrdev_ioctl()
809 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
818 		tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
822 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
828 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
836 			if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER)  in twa_chrdev_ioctl()
838 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
852 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
855 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_LOCKED;  in twa_chrdev_ioctl()
862 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
864 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NOT_LOCKED;  in twa_chrdev_ioctl()
873 	if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length) == 0)  in twa_chrdev_ioctl()