If the effective UID of the caller is root, the real UID and saved set-user-ID are also set.
如果调用者的有效UID是根用户，那么还设置真实uid和保存的set - user - ID。
If a process switches its effective uid from 0 to non-0, then its effective capability set is cleared.
如果进程将它的有效uid从0切换到非 0，那么它的有效能力集被清空。
The file effective set will be full on if the process's effective uid is root or the file is setuid root.
如果进程的有效uid是根用户，或者文件是setuid root，那么文件有效集就是满的。
The file inheritable and permitted sets will be full on if the process's real or effective uid is 0 (root) or the file is setuid root.
如果进程的真实uid或有效uid是0(根用户)，或者文件是setuid root，那么文件的可继承集和允许集就是满的。
The file inheritable and permitted sets will be full on if the process's real or effective uid is 0 (root) or the file is setuid root.
如果进程的真实uid或有效uid是0(根用户)，或者文件是setuid root，那么文件的可继承集和允许集就是满的。
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