646 	TW_Ioctl_Driver_Command driver_command;  in twa_chrdev_ioctl()  local
666 	if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command)))  in twa_chrdev_ioctl()
670 	if (driver_command.buffer_length > TW_MAX_SECTORS * 2048) {  in twa_chrdev_ioctl()
676 	data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511;  in twa_chrdev_ioctl()
688 	if (copy_from_user(tw_ioctl, argp, driver_command.buffer_length + sizeof(TW_Ioctl_Buf_Apache) - 1))  in twa_chrdev_ioctl()
741 		tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
749 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
752 				tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
755 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
758 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
767 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
770 				tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
774 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
777 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
786 		tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
790 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
796 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
804 			if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER)  in twa_chrdev_ioctl()
806 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
815 		tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
819 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;  in twa_chrdev_ioctl()
825 				tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
833 			if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER)  in twa_chrdev_ioctl()
835 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;  in twa_chrdev_ioctl()
849 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
852 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_LOCKED;  in twa_chrdev_ioctl()
859 			tw_ioctl->driver_command.status = 0;  in twa_chrdev_ioctl()
861 			tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NOT_LOCKED;  in twa_chrdev_ioctl()
870 …if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length - 1) =…  in twa_chrdev_ioctl()