dpns_getgrpmap - get all existing groups from virtual gid table
int dpns_getgrpmap (int *nbentries, struct dpns_groupinfo
dpns_getgrpmap gets all the existing groups from the virtual gid table.
will be set to the number of entries in the array of group
will be set to the address of an array of dpns_groupinfo
structures allocated by the API. The client application is
responsible for freeing the array when not needed anymore.
This function requires ADMIN privilege.
This routine returns 0 if the operation was successful or -1 if the
operation failed. In the latter case, serrno is set appropriately.
EACCES The caller does not have ADMIN privilege.
ENOMEM Memory could not be allocated for unmarshalling the reply.
EFAULT nbentries or grp_entries is a NULL pointer.
SENOSHOST Host unknown.
SENOSSERV Service unknown.
SECOMERR Communication error.
ENSNACT Name server is not running or is being shutdown.