[Samba] User groups

Andrew Morgan morgan at orst.edu
Mon Apr 3 16:22:28 GMT 2006

On Mon, 3 Apr 2006, Cybionet wrote:

> Wlcome in the club :-)
> I wrote a topic "Limit of group membership for a user?" with the same 
> problem, and I don't have any answer by the samba team. I have the most 
> recent Samba 3.0.21b, OpenLDAP 2.2.28 and Glibc 2.3.6 version on a Gentoo 
> (kernel 2.6.15) and I have the same problem. I check the NGROUP_MAX (65535) 
> and the NSS_BUFLEN_GROUP (2048) value of the glibc.
> For the AMD64 environment I have a limit of 66 groups for a user, but 
> suprise, on the x86 environment I stop to count at 83 groups for a user (but 
> it is not the limit). I continu the test this week.

>From my limited memory of this issue on Linux, the problem is not the 
number of users in a group, but the total length of the membership string. 
So the number of users that can be in a group may also depend on the 
length of all their usernames.

I have no idea if glibc has changed, but a long time ago it was a fixed 
length char array that stored the group membership.  This doesn't really 
help your issue, but hopefully it provides more information.


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