METHOD AND DEVICE FOR CONTROLLING ACCESS AUTHORITY OF FILE

A method and device for controlling the access authority of a file are provided by embodiments of the present invention, which relate to the field of communications and can improve the efficiency of authenticating an access control list ACL and reduce the total cost of a system. The method comprises: reading an access control entry ACE in an initial access control list ACL, wherein the ACE at least comprises a user identification and a member variable corresponding to the user identification; judging whether the ACE contains an inherit only IO flag bit; storing the ACE without the IO flag bit in a cached ACL; and combining ACEs which contain the same user identification and do not contain the IO flag bits in the cached ACL to obtain an improved ACL used to authenticate the ACL of the file. L'invention concerne, dans des modes de réalisation, un procédé et un dispositif destinés à contrôler l'autorité d'accès d'un fichier, relatifs au domaine des communications et pouvant améliorer l'efficacité d'authentificat