Patent ID: 7330976

Claim:
An access control system, comprising: an operating system; and an access control device for controlling access from each of one or more processes executed by the operating system to one of one or more devices, wherein: the operating system comprises: a device file generating unit for generating a device file or device files for a route or each of routes through which each of the processes accesses one of the devices; an access rule setting unit for setting access rules indicating methods for accessing device files for each of the routes; and an access control unit for controlling access to each device file according to the associated access rule; the access control device includes: an access rule extracting unit for extracting access rules set for routes to a plurality of device files corresponding to a common device; and an access rule deriving unit for deriving a unified access rule for each device on the basis of the extracted access rules; and the access control unit is configured to control access to each device file according to the associated unified access rule.