SMACK: The Simplified Mandatory Access

今話題のSMACKですが、SMACK自体はどういう仕組み？

HP
http://www.schaufler-ca.com/

WhitePaper
http://www.schaufler-ca.com/data/SmackWhitePaper.pdf

いまいちわかりにくい・・・

LWN
Simplified mandatory access control kernel implementation
http://lwn.net/Articles/241891/
v8 Simplified Mandatory Access Control Kernel
http://lwn.net/Articles/243921/