2 Unix SMB/CIFS mplementation.
4 The module that handles the Domain Naming FSMO Role Owner
7 Copyright (C) Stefan Metzmacher 2007
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "lib/ldb/include/ldb.h"
26 #include "lib/ldb/include/ldb_errors.h"
27 #include "lib/ldb/include/ldb_private.h"
28 #include "dsdb/samdb/samdb.h"
29 #include "librpc/gen_ndr/ndr_misc.h"
30 #include "librpc/gen_ndr/ndr_drsuapi.h"
31 #include "librpc/gen_ndr/ndr_drsblobs.h"
32 #include "lib/util/dlinklist.h"
34 static int naming_fsmo_init(struct ldb_module *module)
37 struct ldb_dn *naming_dn;
38 struct dsdb_naming_fsmo *naming_fsmo;
39 struct ldb_result *naming_res;
41 static const char *naming_attrs[] = {
46 mem_ctx = talloc_new(module);
49 return LDB_ERR_OPERATIONS_ERROR;
52 naming_dn = samdb_partitions_dn(module->ldb, mem_ctx);
54 ldb_debug(module->ldb, LDB_DEBUG_WARNING,
55 "naming_fsmo_init: no partitions dn present: (skip loading of naming contexts details)\n");
57 return ldb_next_init(module);
60 naming_fsmo = talloc_zero(mem_ctx, struct dsdb_naming_fsmo);
63 return LDB_ERR_OPERATIONS_ERROR;
65 module->private_data = naming_fsmo;
67 ret = ldb_search(module->ldb, naming_dn,
71 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
72 ldb_debug(module->ldb, LDB_DEBUG_WARNING,
73 "naming_fsmo_init: no partitions dn present: (skip loading of naming contexts details)\n");
75 return ldb_next_init(module);
77 if (ret != LDB_SUCCESS) {
78 ldb_debug_set(module->ldb, LDB_DEBUG_FATAL,
79 "naming_fsmo_init: failed to search the cross-ref container: %s: %s",
80 ldb_strerror(ret), ldb_errstring(module->ldb));
84 talloc_steal(mem_ctx, naming_res);
85 if (naming_res->count == 0) {
86 ldb_debug(module->ldb, LDB_DEBUG_WARNING,
87 "naming_fsmo_init: no cross-ref container present: (skip loading of naming contexts details)\n");
89 return ldb_next_init(module);
90 } else if (naming_res->count > 1) {
91 ldb_debug_set(module->ldb, LDB_DEBUG_FATAL,
92 "naming_fsmo_init: [%u] cross-ref containers found on a base search",
95 return LDB_ERR_CONSTRAINT_VIOLATION;
98 naming_fsmo->master_dn = ldb_msg_find_attr_as_dn(module->ldb, naming_fsmo, naming_res->msgs[0], "fSMORoleOwner");
99 if (ldb_dn_compare(samdb_ntds_settings_dn(module->ldb), naming_fsmo->master_dn) == 0) {
100 naming_fsmo->we_are_master = true;
102 naming_fsmo->we_are_master = false;
105 if (ldb_set_opaque(module->ldb, "dsdb_naming_fsmo", naming_fsmo) != LDB_SUCCESS) {
106 ldb_oom(module->ldb);
107 return LDB_ERR_OPERATIONS_ERROR;
110 talloc_steal(module, naming_fsmo);
112 ldb_debug(module->ldb, LDB_DEBUG_TRACE,
113 "naming_fsmo_init: we are master: %s\n",
114 (naming_fsmo->we_are_master?"yes":"no"));
116 talloc_free(mem_ctx);
117 return ldb_next_init(module);
120 const struct ldb_module_ops ldb_naming_fsmo_module_ops = {
121 .name = "naming_fsmo",
122 .init_context = naming_fsmo_init