r23046: Few missing merges from cleaning out the Centeris winbindd tree.

Nothing of major interest.  Will fix a few problems with one way trusts.
(This used to be commit 3d48a7e72d)

source3/nsswitch/winbindd.c

@@ -1164,6 +1164,10 @@ int main(int argc, char **argv, char **envp)
 
 	wcache_tdc_clear();	
 	
+	/* clear the cached list of trusted domains */
+
+	wcache_tdc_clear();	
+	
 	if (!init_domain_list()) {
 		DEBUG(0,("unable to initalize domain list\n"));
 		exit(1);

source3/nsswitch/winbindd_rpc.c

@@ -458,6 +458,12 @@ static NTSTATUS query_user(struct winbindd_domain *domain,
 		return NT_STATUS_OK;
 	}
 	
+	if ( !winbindd_can_contact_domain( domain ) ) {
+		DEBUG(10,("query_user: No incoming trust for domain %s\n",
+			  domain->name));
+		return NT_STATUS_OK;
+	}
+	
 	/* no cache; hit the wire */
 		
 	result = cm_connect_sam(domain, mem_ctx, &cli, &dom_pol);

source3/nsswitch/winbindd_util.c

@@ -148,6 +148,16 @@ static struct winbindd_domain *add_trusted_domain(const char *domain_name, const
 		return domain;		
 	}	
         
+	/* See if we found a match.  Check if we need to update the
+	   SID. */
+
+	if ( domain ) {
+		if ( sid_equal( &domain->sid, &global_sid_NULL ) )
+			sid_copy( &domain->sid, sid );
+
+		return domain;		
+	}	
+        
 	/* Create new domain entry */
 
 	if ((domain = SMB_MALLOC_P(struct winbindd_domain)) == NULL)

source3/passdb/pdb_interface.c

@@ -1307,7 +1307,7 @@ static BOOL pdb_default_sid_to_id(struct pdb_methods *methods,
 		goto done;		
 	}
 	
-	/* check for "Unix User" */
+	/* check for "Unix Group" */
 
 	if ( sid_peek_check_rid(&global_sid_Unix_Groups, sid, &rid) ) {
 		id->gid = rid;