Path: utzoo!attcan!uunet!lll-winken!lll-tis!ames!umd5!decuac!felix!info-ultrix
From: shore@ncifcrf.gov (Melinda Shore)
Newsgroups: comp.unix.ultrix
Subject: Re: Ultrix 1.2 MAXUSERS
Message-ID: <50932@felix.UUCP>
Date: 27 Jul 88 14:17:11 GMT
References: <41605@felix.UUCP> <48900@felix.UUCP>
Sender: info-ultrix@felix.UUCP
Reply-To: shore@ncifcrf.gov (Melinda Shore)
Organization: NCI Supercomputer Center, Frederick, MD
Lines: 16
Approved: zemon@felix.UUCP
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In article <48900@felix.UUCP> casey@admin.cognet.ucla.edu (Casey Leedom) writes:
>  This information is recorded in the first byte of /upgrade.  If zero,
>your system will support more that 64 users.  If non-zero, say N, your
>system won't let more than N users log on.

Close.  /etc/license does check /upgrade, but /upgrade is *not* used to
limit the number of logins.  There's a kernel variable that stores the
number of users allowed on the system simultaneously, and it's checked
during login (through the use of a standard system call, "enhanced" by
Digital).

BTW, this is for Ultrix 2.0 and higher - Ultrix 1.2 handles login
limits differently.
-- 
Melinda Shore                                    shore@ncifcrf.gov
NCI Supercomputer Facility              ..!uunet!ncifcrf.gov!shore