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From: stpeters@dawn.steinmetz (Dick St.Peters)
Newsgroups: comp.unix.wizards
Subject: Re: NGROUP limit set at 8
Message-ID: <7712@steinmetz.steinmetz.UUCP>
Date: Tue, 27-Oct-87 17:11:27 EST
Article-I.D.: steinmet.7712
Posted: Tue Oct 27 17:11:27 1987
Date-Received: Fri, 30-Oct-87 04:01:03 EST
References: <9096@mimsy.UUCP>
Sender: root@steinmetz.steinmetz.UUCP
Reply-To: stpeters@dawn.UUCP (Dick St.Peters)
Organization: General Electric CRD, Schenectady, NY
Lines: 23
Keywords: NGROUP

In article <9096@mimsy.UUCP> sjr@mimsy.UUCP (Stephen J. Roznowski) writes:
>I've run across a problem with trying to be in more than 8 groups
>at once.  The problem is that it seems that I need to rebuild the
>whole system to enlarge NGROUP (located in /usr/include/sys/param.h),
>
>Is there an easier solution? (Other than rebuilding the system)

No.  NGROUP is used to size an array in the kernel ucred (user's
credentials) structure when building a kernel.

>A related question, how would you make this change on a binary only
>distribution?

Even binary distributions come with a configuration source file
/usr/sys/conf/param.c, compiled when you build a kernel.  This
#include's "../h/param.h", which defines the NGROUP value for the
kernel.  If you change NGROUP there, you probably ought to change it
in in /usr/include/sys/param.h also.
--
Dick St.Peters                        
GE Corporate R&D, Schenectady, NY
stpeters@ge-crd.arpa              
uunet!steinmetz!stpeters