getgroups() gives wrong result with nss_winbind

Henrik Nordstrom hno at
Thu Sep 16 21:48:19 GMT 2004

On Thu, 16 Sep 2004, Andreas wrote:

> I'm having some strange errors with group membership in samba-3.0.7 (not
> sure about other version).
> There is this user (marcia) belonging to over 200 groups. However, when she calls
> getgroups(2), only 64 are returned.

Maybe your OS limit is set to 64..

Try the following to verify your OS limit:

#include <unistd.h>
#include <stdio.h>

int main(int argc, char **argv)
     long ngroups_max;
     ngroups_max = sysconf(_SC_NGROUPS_MAX);
     printf("ngroups: %ld\n", ngroups_max);


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