window control block(WCB)

A data structure that stores access control information for a file. It is created when a file is accessed on a volume. It is deleted when the file is deaccessed.; 存储文件的存取控制信息的一种数据结构。当卷上的文件被访问时即建立该文件的WCB，不 访问时WCB即被删除。