Access control method and device of operating system, equipment and storage medium

The invention relates to the technical field of computers, and discloses an access control method and device of an operating system, equipment and a storage medium. The method comprises the following steps: acquiring attribute information and label access information allocated for a user process; when an access request initiated by the user process is received, determining an access permission of the user process based on the attribute information and the tag access information; and dynamically updating the access permission based on the resource access state of the user process. By implementing the technical scheme of the invention, the access permission of the user process is determined by fusing the attribute information and the label access information, and safe and reliable kernel-level operating system mandatory access control is performed on the user process in combination with the access permission, so that the safety of the mandatory access control of the operating system is ensured. And meanwhile, d