在单进程操作系统环境下实现磁盘并行I／O的安全方法

A Method to Realize the Security of Disk I/O Parallel Under Single-Process Operation System

本文分析了在ＤＯＳ环境下进行实时多任务并行处理时，影响系统安全性的关键问题。结合具体应用，利用ＤＯＳ内核在等待输入输出时循环执行ＩＮＴ２８空闲调用这一特点，将后台程序作为ＩＮＴ２８中断服务程序，实现了后台Ｉ／Ｏ操作完全在ＤＯＳ控制下进行，从而保障了系统的安全性．

This paper analyses the key problems which affect system security,when multi-tasks in DOS. Related to real application adn by means of the character that int28 idle call is excuted cyclically when DOS kernel waits to input and output, rear program is used as Int28 interrupt service program.So rear I/O operation can be competely controlled by DOS. And thus system security is ensured.