要知道,每一个 *nix 进程在运行时都是用有效用户标识(effective UID),而其中有些并不等同真实用户标识。多数情况是,对类似文件系统权限或操作系统功能这项的有效用户标识感兴趣的人将会检查它,而...
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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。
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