Introduce support for Mandatory Access Control and extensible kernel access control.
Introduce support for Mandatory Access Control and extensible
kernel access control.

Instrument connect(), listen(), and bind() system calls to invoke
MAC framework entry points to permit policies to authorize these
requests.  This can be useful for policies that want to limit
the activity of processes involving particular types of IPC and
network activity.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs

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