Selectively disable login at specified line?

[Jonathan S. Shapiro]

In article <659 at mtxinu.UUCP> ed at mtxinu.UUCP (Ed Gould) writes:
>>We want to restrict login-access at a specified terminal line
>>to a group of designated users, with the other ttys still
>>accessible to all users.
>
>The /etc/ttys file specifies the program to be run to capture the
>login name: typically /etc/getty.  You can use any program of your
>own design instead, however.  The functions of getty are, essentially,

Unfortunately, Ed is not quite right here, because of the following:

	Getty:    login:
	me:       shap
	...getty execs login...
	login:    passwd:
	me:       BOGUS (intentionally mistyped)
	*login*:  login:

A better place to enforce this sort of thing is to put in /etc/profile
and /etc/.login a line to check the tty line against the users group,
and log them out if the check fails.

This doesn't involve writing any special code.