一个简单的U盘过滤驱动程序，使U盘变成一个只读存储器。针对本机当前用户对U盘进行读写控制。可以令U盘处于只读状态。监控用户对文件系统的操作。-A simple U disk filter driver U disk into a read-only memory. U disk read and write control for the current user of the machine. U disk is read-only status. Monitoring of user ope