Adjusting NGROUPS_MAX constant

[Parker Anderson]

Hello Dan,

On 1/16/07, Dan Casey <dcasey at debtresolve.com> wrote:
> I am running into trouble with users who are in more then 16 groups.  I
> fail to ssh in with the following message:
> sshd[96785]: initgroups(username,1002): Invalid argument
>
> sysctl -a kern.ngroups
> kern.ngroups: 16
>
> Is there any reason why I should not raise NGROUPS_MAX in the following
> two files?
>
> /usr/include/sys/syslimits.h
> /usr/src/sys/sys/syslimits.h
>
>
> What could I accidentally break.. Or should I say, is there a good
> reason why the number 16 is hard coded in there?

I found another post on this:

http://unix.derkeiler.com/Mailing-Lists/FreeBSD/current/2005-05/1086.html

The poster outlines 3 potential issues, including issues with NFS with
an NGROUPS_MAX value above 16.  I'm not sure if those are still issues
(e.g. I don't use NFS), but that may be why the values have been set
that way by default.

I hope that thread helps!

Sincerely,
-Parker