Syracuse University
Access Control Lists (ACL) Lab
Overview Requirement (mandatory / bonus) Due/Submission Helpful Documents Resources
Overview:
This project is intended to help students understand the concept of the ACL. Minix has already implemented the abbreviated Access Control Lists, namely, the ACL is based on owner, group and other users. This suffers from a loss of granularity. In this project, you need to implement the full ACL for Minix. The full ACL contains additional permissions on a per user basis, which override the standard MINIX permissions.
Requirement:
Basic (10 point) : Add a fixed access control list to a file.
You can choose any fixed access control list. Namely, the
access control list is hardcoded in the system.
Bonus (5 point) : Users can choose their own access
control list that they want to add to a file.
In addition to making changes in the OS kernel, you also need to implement two utility programs setacl and getacl that is used to set/get the acls of a file. However, you should not spend too much time on the usability of these two utility programs.
Demonstration
You also need to develop some simple testing programs to demonstrate these functionalities. A demonstration is required for this project. If you have only designed the bonus parts (without an implementation), you should present your design to the TA during the demonstration.
Submission:
(1) Please submit a hard copy of your code before the class on Wednesday
(2) Please include the grading sheet as the first page of your report
(3) You need to demonstrate your design to TA. Please sign up a demonstration time slot with TA (you could fill out the time slot on the door of CST 3-188). Here is the demonstration schedule.
Special notice:
If found plagiarism / copying other person's work, you will get a zero for your project
Helpful Documents
Access Control List FAQ [PDF] or
[DOC] or [PS]
Trusted Minix: A worked Example [html]
Accss Control List Implementation Project Issues (last year) [html]
Good document on ACL [PDF]
Minix Code Hierarchy [PDF]
ACL project files [PDF]
Resources on ACL/Minix/Linux
Access Control List project from VUACL Linux Version
Using ACLs with Fedora Core 2
POSIX Access Control Lists on Linux
Updated: 02/19/2005