Access control in a computer system
A technique for controlling a software process's access to securable objects that utilizes the native security mechanisms of an operating system. According to an aspect of the technique (i) a group is created, (ii) rights for the group are defined, (iii) the group is associated with a program image and (iv) the group is assigned to processes created from the program image. Specifically, access tokens associated with processes created from the program image are modified to include the groups associated with the program image. The modified access tokens are used by the operating system's native security mechanisms to determine if the processes, created from the program image, may gain access to securable objects.
1 . An apparatus for providing access control to securable objects in a computer system, the apparatus comprising:
a memory containing an operating system; and
a processor coupled to the memory, the processor configured to:
(a) generate an access token for a process,
(b) identify one or more groups associated with a program image from which the process was created, and
(c) associate the identified one or more groups with the access token.
2 . An apparatus as defined in claim 1 wherein the process is a child process.
3 . An apparatus as defined in claim 1 wherein the processor is further configured to:
(a) create a group,
(b) define rights for the group, and
(c) associate the program image with the created group.
4 . An apparatus as defined in claim 1 further comprising:
a software driver embodied to perform step c.
5 . An apparatus as defined in claim 1 wherein each securable object is associated with a security descriptor structure having an access control list (ACL) that contains access control entries (ACEs) wherein the ACEs define permissions that one or more security principals have to access the securable object.
6 . An apparatus as defined in claim 5 wherein the processor is further configured to:
(a) determine if the ACL indicates that a security principal associated with the process has permission to access the securable object, and
(b) if so, allow the process access to the securable object.
7 . An apparatus as defined in claim 5 wherein the processor is further configured to:
(a) determine if the ACL indicates that a security principal associated with the process has permission to access the securable object, and
(b) if not, deny the process access to the securable object.
8 . In a computer system having one or more securable objects, a method for providing access control to the securable objects comprising the steps of:
generating an access token for a process;
identifying one or more groups associated with a program image from which the process was created; and
associating the identified one or more groups with the access token.
9 . A method as defined in claim 8 wherein the process is a child process.
10 . A method as defined in claim 8 further comprising the steps of:
creating a group;
defining rights for the group; and
associating the program image with the created group.
11 . A method as defined in claim 8 wherein each securable object is associated with a security descriptor structure having an access control list (ACL) that contains access control entries (ACEs) wherein the ACEs define permissions that one or more security principals have to access the securable object.
12 . A method as defined in claim 11 further comprising the steps of:
determining if the ACL indicates that a security principal associated with the process has permission to access the securable object; and
if so, allowing the process access to the securable object.
13 . A method as defined in claim 11 further comprising the steps of:
determining if the ACL indicates that a security principal associated with the process has permission to access the securable object; and
if not, denying the process access to the securable object.
14 . A computer-readable medium comprising computer-executable instructions for execution in a processor for:
generating an access token for a process;
identifying one or more groups associated with a program image from which the process was created; and
associating the identified one or more groups with the access token.
15 . A computer-readable medium as defined in claim 14 wherein the process is a child process.
16 . A computer-readable medium as defined in claim 14 wherein each securable object is associated with a security descriptor entry having an access control list (ACL) that contains access control entries (ACEs) wherein the ACEs define permissions that one or more security principals have to access the securable object.
17 . A computer-readable medium as defined in claim 16 further comprising computer-executable instructions for execution in a processor for:
determining if the ACL indicates that a security principal associated with the process has permission to access the securable object; and
if so, allowing the process access to the securable object.
18 . A computer-readable medium as defined in claim 16 further comprising
computer-executable instructions for execution in a processor for:
determining if the ACL indicates that a security principal associated with the process has permission to access the securable object; and
if not, denying the process access to the securable object.
19 . Electromagnetic signals traveling on a data network, the electromagnetic signals carrying instructions for execution on a processor for practicing a method of:
generating an access token for a process;
identifying one or more groups associated with a program image from which the process was created; and
associating the identified one or more groups with the access token.
20 . Electromagnetic signals as defined in claim 19 wherein the process is a child process.