这一次，非根用户的能力集是空的，作为根用户启动的进程的允许集和有效集中包含cap _ dac_override。

This time, the non-root user has an empty capability set, while the process started as a root user has cap_dac_override in its permitted and effective sets.

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在极大值函数的有效域为非空凸集的条件下研究了次微分，并给出它的结构表达式。

And the expression of its subdifferential is developed in the case that the effective domain of the sup-type function is a non-empty convex set.

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