公开(公告)号：US20210049112A1

公开(公告)日：2021-02-18

申请号：US16965935

申请日：2018-11-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fuzhou XIAO ,  Youzhan YIN ,  Dengzhou XIA

IPC: G06F12/14 ,  G06F21/71 ,  G06F21/53

Abstract: Embodiments of the present disclosure relate to kernel integrity protection methods and apparatuses. In an embodiment, a method includes: sending, by a first program executing at a first exception level, a request message to a second program executing at a second exception level, wherein the first exception level has lower execution privilege than the second exception level, the request message requests to perform memory access, and wherein the memory access is a preset register access or a preset memory space access, and; in response to receiving the request message, obtaining, by the second program, event information corresponding to the memory access; sending, by the second program, the event information to the first program; and processing, by the first program, the event information.

公开(公告)号：US20210081217A1

公开(公告)日：2021-03-18

申请号：US17041942

申请日：2018-03-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fuzhou XIAO ,  Youzhan YIN ,  Li CHEN

IPC: G06F9/445 ,  G06F9/50 ,  G06F16/903 ,  G06F8/71

Abstract: A resource permission processing method and apparatus, a storage medium, and a chip are disclosed, to update a resource label in a terminal device based on a first resource permission configuration file when a system software version in the terminal device is upgraded. The first resource permission configuration file covers only path information in which a label changes before and after the system software version is upgraded. Therefore, in a process of updating the resource label stored in the terminal device, a matching amount is greatly reduced when path information that matches traversal path information of a resource is searched for in the first resource permission configuration file, and therefore time consumed for labeling the stored resource can be reduced. The reduced time for labeling the stored resource improves labeling efficiency, reduces time consumed for the system software version upgrade, and improves efficiency of the system software version upgrade.