Allows you to augment the callers keyset with your own.
允许您使用自己的键集来扩充调用者的键集。
However, a Level 1 driver can support dynasets if it supports extended fetch and keyset-driven cursors.
但是只要1级驱动程序支持扩展的获取和键集驱动游标，它就可以支持动态集。
A kernel keyset is a representation of a collection of kernel keys and the desired read or write access to them.
内核键集是内核键集合，以及对它们进行读写所需的权限的表示形式。
应用推荐