645 	TW_Ioctl_Driver_Command driver_command;  in twa_chrdev_ioctl()  local
665 	if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command)))  in twa_chrdev_ioctl()
669 	if (driver_command.buffer_length > TW_MAX_SECTORS * 2048) {  in twa_chrdev_ioctl()
675 	data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511;  in twa_chrdev_ioctl()
689 	if (copy_from_user(tw_ioctl, argp, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length))  in twa_chrdev_ioctl()
742 		tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
750 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
753 				tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
756 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
759 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
768 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
771 				tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
775 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
778 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
787 		tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
791 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
797 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
805 			if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER)  in twa_chrdev_ioctl()
807 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
816 		tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
820 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
826 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
834 			if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER)  in twa_chrdev_ioctl()
836 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
850 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
853 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_LOCKED;  in twa_chrdev_ioctl()
860 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
862 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NOT_LOCKED;  in twa_chrdev_ioctl()
871 	if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length) == 0)  in twa_chrdev_ioctl()