Accounting changes

[Poul-Henning Kamp]

In message <20070419212253.L2913 at fledge.watson.org>, Robert Watson writes:

>> 	__dev_t   ac_tty;		/* controlling tty */

This field is useless, nobody uses hardwired RS-232 terminals
anymore.

What we should do is add a systemcall or sysctl, so session creators
like getty, sshd and similar can install a session indentifying string
on the session, and then dump that in the accounting.

sshd would log IP+port and possibly also credential used for auth.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.