公开(公告)号：US11238175B2

公开(公告)日：2022-02-01

申请号：US16718995

申请日：2019-12-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaoqin Xie ,  Hongxing Guo ,  Yongjian Li ,  Mantang Ma ,  Zhiting Lu ,  Junwei Zhang

IPC: G06F15/16 ,  G06F21/62 ,  G06F16/182 ,  H04L29/06 ,  H04L29/08

Abstract: A data access method in a file system comprises receiving a data access request including an identifier of a to-be-accessed node, obtaining access permission for the to-be-accessed node based on the identifier of the to-be-accessed node, wherein when a permission version number of the to-be-accessed node is not the latest in permission version numbers of all nodes indicated by path information of the to-be-accessed node in a file system, the access permission for the to-be-accessed node inherits a permission record corresponding to a parent node that is of the to-be-accessed node and that has a latest permission version number, and performing authentication based on the access permission for the to-be-accessed node, and accessing data of the to-be-accessed node after the authentication succeeds.