[Gllug] Reason behind groups

[John Hearns]

On Thu, 2002-10-17 at 10:54, Tethys wrote:
> Walid Shaari writes:
> 
> >how many groups can a single user join in? (e.g. in Solaris 8 I believe
> >its like 16, and thats one reason for use of ACL)
> >
> >is there a similar default limit in Linux?
> 
> The group limit is only a problem if you're using NIS. Under Solaris,
> the limit can be increased via kernel parameters, but I think NIS has
> a hardcoded 16 group limit. I'm not aware of any inherent group limit
> for local users under Linux.

I just looked at limits.h
There is a paremeter in there:
#define NGROUPS_MAX       32    /* supplemental group IDs are available
*/

I think this is a maximum on groups - but I may be wrong!




-- 
John Hearns <john.hearns at cern.ch>
CERN


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