4 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2006
5 Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * Component: ldb partitions module
26 * Description: Implement LDAP partitions
28 * Author: Andrew Bartlett
29 * Author: Stefan Metzmacher
32 #include "dsdb/samdb/ldb_modules/partition.h"
35 struct ldb_module *module;
36 struct ldb_request *req;
39 struct partition_context {
40 struct ldb_module *module;
41 struct ldb_request *req;
43 struct part_request *part_req;
44 unsigned int num_requests;
45 unsigned int finished_requests;
47 const char **referrals;
50 static struct partition_context *partition_init_ctx(struct ldb_module *module, struct ldb_request *req)
52 struct partition_context *ac;
54 ac = talloc_zero(req, struct partition_context);
56 ldb_set_errstring(ldb_module_get_ctx(module), "Out of Memory");
67 * helper functions to call the next module in chain
69 int partition_request(struct ldb_module *module, struct ldb_request *request)
71 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) { \
72 const struct dsdb_control_current_partition *partition = NULL;
73 struct ldb_control *partition_ctrl = ldb_request_get_control(request, DSDB_CONTROL_CURRENT_PARTITION_OID);
75 partition = talloc_get_type(partition_ctrl->data,
76 struct dsdb_control_current_partition);
79 if (partition != NULL) {
80 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_request() -> %s",
81 ldb_dn_get_linearized(partition->dn));
83 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_request() -> (metadata partition)");
87 return ldb_next_request(module, request);
90 static struct dsdb_partition *find_partition(struct partition_private_data *data,
92 struct ldb_request *req)
95 struct ldb_control *partition_ctrl;
97 /* see if the request has the partition DN specified in a
98 * control. The repl_meta_data module can specify this to
99 * ensure that replication happens to the right partition
101 partition_ctrl = ldb_request_get_control(req, DSDB_CONTROL_CURRENT_PARTITION_OID);
102 if (partition_ctrl) {
103 const struct dsdb_control_current_partition *partition;
104 partition = talloc_get_type(partition_ctrl->data,
105 struct dsdb_control_current_partition);
106 if (partition != NULL) {
115 /* Look at base DN */
116 /* Figure out which partition it is under */
117 /* Skip the lot if 'data' isn't here yet (initialisation) */
118 for (i=0; data && data->partitions && data->partitions[i]; i++) {
119 if (ldb_dn_compare_base(data->partitions[i]->ctrl->dn, dn) == 0) {
120 return data->partitions[i];
128 * fire the caller's callback for every entry, but only send 'done' once.
130 static int partition_req_callback(struct ldb_request *req,
131 struct ldb_reply *ares)
133 struct partition_context *ac;
134 struct ldb_module *module;
135 struct ldb_request *nreq;
137 struct ldb_control *partition_ctrl;
139 ac = talloc_get_type(req->context, struct partition_context);
142 return ldb_module_done(ac->req, NULL, NULL,
143 LDB_ERR_OPERATIONS_ERROR);
146 partition_ctrl = ldb_request_get_control(req, DSDB_CONTROL_CURRENT_PARTITION_OID);
147 if (partition_ctrl && (ac->num_requests == 1 || ares->type == LDB_REPLY_ENTRY)) {
148 /* If we didn't fan this request out to mulitple partitions,
149 * or this is an individual search result, we can
150 * deterministically tell the caller what partition this was
151 * written to (repl_meta_data likes to know) */
152 ret = ldb_reply_add_control(ares,
153 DSDB_CONTROL_CURRENT_PARTITION_OID,
154 false, partition_ctrl->data);
155 if (ret != LDB_SUCCESS) {
156 return ldb_module_done(ac->req, NULL, NULL,
161 if (ares->error != LDB_SUCCESS) {
162 return ldb_module_done(ac->req, ares->controls,
163 ares->response, ares->error);
166 switch (ares->type) {
167 case LDB_REPLY_REFERRAL:
168 return ldb_module_send_referral(ac->req, ares->referral);
170 case LDB_REPLY_ENTRY:
171 if (ac->req->operation != LDB_SEARCH) {
172 ldb_set_errstring(ldb_module_get_ctx(ac->module),
173 "partition_req_callback:"
174 " Unsupported reply type for this request");
175 return ldb_module_done(ac->req, NULL, NULL,
176 LDB_ERR_OPERATIONS_ERROR);
179 return ldb_module_send_entry(ac->req, ares->message, ares->controls);
182 if (ac->req->operation == LDB_EXTENDED) {
183 /* FIXME: check for ares->response, replmd does not fill it ! */
184 if (ares->response) {
185 if (strcmp(ares->response->oid, LDB_EXTENDED_START_TLS_OID) != 0) {
186 ldb_set_errstring(ldb_module_get_ctx(ac->module),
187 "partition_req_callback:"
188 " Unknown extended reply, "
189 "only supports START_TLS");
191 return ldb_module_done(ac->req, NULL, NULL,
192 LDB_ERR_OPERATIONS_ERROR);
197 ac->finished_requests++;
198 if (ac->finished_requests == ac->num_requests) {
199 /* Send back referrals if they do exist (search ops) */
200 if (ac->referrals != NULL) {
202 for (ref = ac->referrals; *ref != NULL; ++ref) {
203 ret = ldb_module_send_referral(ac->req,
204 talloc_strdup(ac->req, *ref));
205 if (ret != LDB_SUCCESS) {
206 return ldb_module_done(ac->req, NULL, NULL,
212 /* this was the last one, call callback */
213 return ldb_module_done(ac->req, ares->controls,
218 /* not the last, now call the next one */
219 module = ac->part_req[ac->finished_requests].module;
220 nreq = ac->part_req[ac->finished_requests].req;
222 ret = partition_request(module, nreq);
223 if (ret != LDB_SUCCESS) {
225 return ldb_module_done(ac->req, NULL, NULL, ret);
235 static int partition_prep_request(struct partition_context *ac,
236 struct dsdb_partition *partition)
239 struct ldb_request *req;
240 struct ldb_control *partition_ctrl = NULL;
242 ac->part_req = talloc_realloc(ac, ac->part_req,
244 ac->num_requests + 1);
245 if (ac->part_req == NULL) {
246 return ldb_oom(ldb_module_get_ctx(ac->module));
249 switch (ac->req->operation) {
251 ret = ldb_build_search_req_ex(&req, ldb_module_get_ctx(ac->module),
253 ac->req->op.search.base,
254 ac->req->op.search.scope,
255 ac->req->op.search.tree,
256 ac->req->op.search.attrs,
258 ac, partition_req_callback,
260 LDB_REQ_SET_LOCATION(req);
263 ret = ldb_build_add_req(&req, ldb_module_get_ctx(ac->module), ac->part_req,
264 ac->req->op.add.message,
266 ac, partition_req_callback,
268 LDB_REQ_SET_LOCATION(req);
271 ret = ldb_build_mod_req(&req, ldb_module_get_ctx(ac->module), ac->part_req,
272 ac->req->op.mod.message,
274 ac, partition_req_callback,
276 LDB_REQ_SET_LOCATION(req);
279 ret = ldb_build_del_req(&req, ldb_module_get_ctx(ac->module), ac->part_req,
282 ac, partition_req_callback,
284 LDB_REQ_SET_LOCATION(req);
287 ret = ldb_build_rename_req(&req, ldb_module_get_ctx(ac->module), ac->part_req,
288 ac->req->op.rename.olddn,
289 ac->req->op.rename.newdn,
291 ac, partition_req_callback,
293 LDB_REQ_SET_LOCATION(req);
296 ret = ldb_build_extended_req(&req, ldb_module_get_ctx(ac->module),
298 ac->req->op.extended.oid,
299 ac->req->op.extended.data,
301 ac, partition_req_callback,
303 LDB_REQ_SET_LOCATION(req);
306 ldb_set_errstring(ldb_module_get_ctx(ac->module),
307 "Unsupported request type!");
308 ret = LDB_ERR_UNWILLING_TO_PERFORM;
311 if (ret != LDB_SUCCESS) {
315 ac->part_req[ac->num_requests].req = req;
317 if (ac->req->controls) {
318 /* Duplicate everything beside the current partition control */
319 partition_ctrl = ldb_request_get_control(ac->req,
320 DSDB_CONTROL_CURRENT_PARTITION_OID);
321 if (!ldb_save_controls(partition_ctrl, req, NULL)) {
322 return ldb_module_oom(ac->module);
327 void *part_data = partition->ctrl;
329 ac->part_req[ac->num_requests].module = partition->module;
331 if (partition_ctrl != NULL) {
332 if (partition_ctrl->data != NULL) {
333 part_data = partition_ctrl->data;
337 * If the provided current partition control is without
338 * data then use the calculated one.
340 ret = ldb_request_add_control(req,
341 DSDB_CONTROL_CURRENT_PARTITION_OID,
343 if (ret != LDB_SUCCESS) {
348 if (req->operation == LDB_SEARCH) {
349 /* If the search is for 'more' than this partition,
350 * then change the basedn, so a remote LDAP server
352 if (ldb_dn_compare_base(partition->ctrl->dn,
353 req->op.search.base) != 0) {
354 req->op.search.base = partition->ctrl->dn;
359 /* make sure you put the module here, or
360 * or ldb_next_request() will skip a module */
361 ac->part_req[ac->num_requests].module = ac->module;
369 static int partition_call_first(struct partition_context *ac)
371 return partition_request(ac->part_req[0].module, ac->part_req[0].req);
375 * Send a request down to all the partitions
377 static int partition_send_all(struct ldb_module *module,
378 struct partition_context *ac,
379 struct ldb_request *req)
382 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
383 struct partition_private_data);
384 int ret = partition_prep_request(ac, NULL);
385 if (ret != LDB_SUCCESS) {
388 for (i=0; data && data->partitions && data->partitions[i]; i++) {
389 ret = partition_prep_request(ac, data->partitions[i]);
390 if (ret != LDB_SUCCESS) {
395 /* fire the first one */
396 return partition_call_first(ac);
401 * send an operation to the top partition, then copy the resulting
402 * object to all other partitions
404 static int partition_copy_all(struct ldb_module *module,
405 struct partition_context *ac,
406 struct ldb_request *req,
410 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
411 struct partition_private_data);
413 struct ldb_result *res;
415 /* do the request on the top level sam.ldb synchronously */
416 ret = ldb_next_request(module, req);
417 if (ret != LDB_SUCCESS) {
420 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
421 if (ret != LDB_SUCCESS) {
425 /* now fetch the resulting object, and then copy it to all the
426 * other partitions. We need this approach to cope with the
427 * partitions getting out of sync. If for example the
428 * @ATTRIBUTES object exists on one partition but not the
429 * others then just doing each of the partitions in turn will
432 search_ret = dsdb_module_search_dn(module, ac, &res, dn, NULL, DSDB_FLAG_NEXT_MODULE, req);
433 if (search_ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) {
437 /* now delete the object in the other partitions. Once that is
438 done we will re-add the object, if search_ret was not
439 LDB_ERR_NO_SUCH_OBJECT
441 for (i=0; data->partitions && data->partitions[i]; i++) {
443 pret = dsdb_module_del(data->partitions[i]->module, dn, DSDB_FLAG_NEXT_MODULE, req);
444 if (pret != LDB_SUCCESS && pret != LDB_ERR_NO_SUCH_OBJECT) {
445 /* we should only get success or no
446 such object from the other partitions */
452 if (search_ret != LDB_ERR_NO_SUCH_OBJECT) {
453 /* now re-add in the other partitions */
454 for (i=0; data->partitions && data->partitions[i]; i++) {
456 pret = dsdb_module_add(data->partitions[i]->module, res->msgs[0], DSDB_FLAG_NEXT_MODULE, req);
457 if (pret != LDB_SUCCESS) {
463 return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
467 * Figure out which backend a request needs to be aimed at. Some
468 * requests must be replicated to all backends
470 static int partition_replicate(struct ldb_module *module, struct ldb_request *req, struct ldb_dn *dn)
472 struct partition_context *ac;
475 struct dsdb_partition *partition;
476 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
477 struct partition_private_data);
479 /* if we aren't initialised yet go further */
480 if (!data || !data->partitions) {
481 return ldb_next_request(module, req);
484 if (ldb_dn_is_special(dn)) {
485 /* Is this a special DN, we need to replicate to every backend? */
486 for (i=0; data->replicate && data->replicate[i]; i++) {
487 if (ldb_dn_compare(data->replicate[i],
490 ac = partition_init_ctx(module, req);
492 return ldb_operr(ldb_module_get_ctx(module));
495 return partition_copy_all(module, ac, req, dn);
500 /* Otherwise, we need to find the partition to fire it to */
503 partition = find_partition(data, dn, req);
506 * if we haven't found a matching partition
507 * pass the request to the main ldb
509 * TODO: we should maybe return an error here
510 * if it's not a special dn
513 return ldb_next_request(module, req);
516 ac = partition_init_ctx(module, req);
518 return ldb_operr(ldb_module_get_ctx(module));
521 /* we need to add a control but we never touch the original request */
522 ret = partition_prep_request(ac, partition);
523 if (ret != LDB_SUCCESS) {
527 /* fire the first one */
528 return partition_call_first(ac);
532 static int partition_search(struct ldb_module *module, struct ldb_request *req)
534 struct ldb_control **saved_controls;
536 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
537 struct partition_private_data);
538 struct partition_context *ac;
539 struct ldb_context *ldb;
540 struct loadparm_context *lp_ctx;
542 struct ldb_control *search_control = ldb_request_get_control(req, LDB_CONTROL_SEARCH_OPTIONS_OID);
543 struct ldb_control *domain_scope_control = ldb_request_get_control(req, LDB_CONTROL_DOMAIN_SCOPE_OID);
544 struct ldb_control *no_gc_control = ldb_request_get_control(req, DSDB_CONTROL_NO_GLOBAL_CATALOG);
546 struct ldb_search_options_control *search_options = NULL;
547 struct dsdb_partition *p;
550 bool domain_scope = false, phantom_root = false;
552 p = find_partition(data, NULL, req);
554 /* the caller specified what partition they want the
555 * search - just pass it on
557 return ldb_next_request(p->module, req);
560 /* Get back the search options from the search control, and mark it as
561 * non-critical (to make backends and also dcpromo happy).
563 if (search_control) {
564 search_options = talloc_get_type(search_control->data, struct ldb_search_options_control);
565 search_control->critical = 0;
569 /* Remove the "domain_scope" control, so we don't confuse a backend
571 if (domain_scope_control && !ldb_save_controls(domain_scope_control, req, &saved_controls)) {
572 return ldb_oom(ldb_module_get_ctx(module));
575 /* if we aren't initialised yet go further */
576 if (!data || !data->partitions) {
577 return ldb_next_request(module, req);
580 /* Special DNs without specified partition should go further */
581 if (ldb_dn_is_special(req->op.search.base)) {
582 return ldb_next_request(module, req);
585 /* Locate the options */
586 domain_scope = (search_options
587 && (search_options->search_options & LDB_SEARCH_OPTION_DOMAIN_SCOPE))
588 || domain_scope_control;
589 phantom_root = search_options
590 && (search_options->search_options & LDB_SEARCH_OPTION_PHANTOM_ROOT);
592 /* Remove handled options from the search control flag */
593 if (search_options) {
594 search_options->search_options = search_options->search_options
595 & ~LDB_SEARCH_OPTION_DOMAIN_SCOPE
596 & ~LDB_SEARCH_OPTION_PHANTOM_ROOT;
599 ac = partition_init_ctx(module, req);
601 return ldb_operr(ldb_module_get_ctx(module));
604 ldb = ldb_module_get_ctx(ac->module);
605 lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
606 struct loadparm_context);
608 /* Search from the base DN */
609 if (ldb_dn_is_null(req->op.search.base)) {
611 return ldb_error(ldb, LDB_ERR_NO_SUCH_OBJECT, "empty base DN");
613 return partition_send_all(module, ac, req);
616 for (i=0; data->partitions[i]; i++) {
617 bool match = false, stop = false;
619 if (data->partitions[i]->partial_replica && no_gc_control != NULL) {
620 if (ldb_dn_compare_base(data->partitions[i]->ctrl->dn,
621 req->op.search.base) == 0) {
622 /* base DN is in a partial replica
623 with the NO_GLOBAL_CATALOG
624 control. This partition is invisible */
625 /* DEBUG(0,("DENYING NON-GC OP: %s\n", ldb_module_call_chain(req, req))); */
631 /* Phantom root: Find all partitions under the
632 * search base. We match if:
634 * 1) the DN we are looking for exactly matches a
635 * certain partition and always stop
636 * 2) the DN we are looking for is a parent of certain
637 * partitions and it isn't a scope base search
638 * 3) the DN we are looking for is a child of a certain
639 * partition and always stop
640 * - we don't need to go any further up in the
643 if (ldb_dn_compare(data->partitions[i]->ctrl->dn,
644 req->op.search.base) == 0) {
649 (ldb_dn_compare_base(req->op.search.base,
650 data->partitions[i]->ctrl->dn) == 0 &&
651 req->op.search.scope != LDB_SCOPE_BASE)) {
655 ldb_dn_compare_base(data->partitions[i]->ctrl->dn,
656 req->op.search.base) == 0) {
658 stop = true; /* note that this relies on partition ordering */
661 /* Domain scope: Find all partitions under the search
664 * We generate referral candidates if we haven't
665 * specified the domain scope control, haven't a base
666 * search* scope and the DN we are looking for is a real
667 * predecessor of certain partitions. When a new
668 * referral candidate is nearer to the DN than an
669 * existing one delete the latter (we want to have only
670 * the closest ones). When we checked this for all
671 * candidates we have the final referrals.
673 * We match if the DN we are looking for is a child of
674 * a certain partition or the partition
675 * DN itself - we don't need to go any further
676 * up in the hierarchy!
678 if ((!domain_scope) &&
679 (req->op.search.scope != LDB_SCOPE_BASE) &&
680 (ldb_dn_compare_base(req->op.search.base,
681 data->partitions[i]->ctrl->dn) == 0) &&
682 (ldb_dn_compare(req->op.search.base,
683 data->partitions[i]->ctrl->dn) != 0)) {
684 char *ref = talloc_asprintf(ac,
686 lpcfg_dnsdomain(lp_ctx),
687 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn),
688 req->op.search.scope == LDB_SCOPE_ONELEVEL ? "??base" : "");
694 /* Initialise the referrals list */
695 if (ac->referrals == NULL) {
696 char **l = str_list_make_empty(ac);
697 ac->referrals = discard_const_p(const char *, l);
698 if (ac->referrals == NULL) {
703 /* Check if the new referral candidate is
704 * closer to the base DN than already
705 * saved ones and delete the latters */
707 while (ac->referrals[j] != NULL) {
708 if (strstr(ac->referrals[j],
709 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn)) != NULL) {
710 str_list_remove(ac->referrals,
717 /* Add our new candidate */
718 ac->referrals = str_list_add(ac->referrals, ref);
722 if (ac->referrals == NULL) {
726 if (ldb_dn_compare_base(data->partitions[i]->ctrl->dn, req->op.search.base) == 0) {
728 stop = true; /* note that this relies on partition ordering */
733 ret = partition_prep_request(ac, data->partitions[i]);
734 if (ret != LDB_SUCCESS) {
742 /* Perhaps we didn't match any partitions. Try the main partition */
743 if (ac->num_requests == 0) {
745 return ldb_next_request(module, req);
748 /* fire the first one */
749 return partition_call_first(ac);
753 static int partition_add(struct ldb_module *module, struct ldb_request *req)
755 return partition_replicate(module, req, req->op.add.message->dn);
759 static int partition_modify(struct ldb_module *module, struct ldb_request *req)
761 return partition_replicate(module, req, req->op.mod.message->dn);
765 static int partition_delete(struct ldb_module *module, struct ldb_request *req)
767 return partition_replicate(module, req, req->op.del.dn);
771 static int partition_rename(struct ldb_module *module, struct ldb_request *req)
774 struct dsdb_partition *backend, *backend2;
776 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
777 struct partition_private_data);
779 /* Skip the lot if 'data' isn't here yet (initialisation) */
781 return ldb_operr(ldb_module_get_ctx(module));
784 backend = find_partition(data, req->op.rename.olddn, req);
785 backend2 = find_partition(data, req->op.rename.newdn, req);
787 if ((backend && !backend2) || (!backend && backend2)) {
788 return LDB_ERR_AFFECTS_MULTIPLE_DSAS;
791 if (backend != backend2) {
792 ldb_asprintf_errstring(ldb_module_get_ctx(module),
793 "Cannot rename from %s in %s to %s in %s: %s",
794 ldb_dn_get_linearized(req->op.rename.olddn),
795 ldb_dn_get_linearized(backend->ctrl->dn),
796 ldb_dn_get_linearized(req->op.rename.newdn),
797 ldb_dn_get_linearized(backend2->ctrl->dn),
798 ldb_strerror(LDB_ERR_AFFECTS_MULTIPLE_DSAS));
799 return LDB_ERR_AFFECTS_MULTIPLE_DSAS;
802 return partition_replicate(module, req, req->op.rename.olddn);
805 /* start a transaction */
806 static int partition_start_trans(struct ldb_module *module)
810 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
811 struct partition_private_data);
812 /* Look at base DN */
813 /* Figure out which partition it is under */
814 /* Skip the lot if 'data' isn't here yet (initialization) */
815 if (ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING) {
816 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_start_trans() -> (metadata partition)");
819 /* This order must match that in prepare_commit() */
820 ret = ldb_next_start_trans(module);
821 if (ret != LDB_SUCCESS) {
825 ret = partition_reload_if_required(module, data, NULL);
826 if (ret != LDB_SUCCESS) {
827 ldb_next_del_trans(module);
831 for (i=0; data && data->partitions && data->partitions[i]; i++) {
832 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
833 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_start_trans() -> %s",
834 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn));
836 ret = ldb_next_start_trans(data->partitions[i]->module);
837 if (ret != LDB_SUCCESS) {
838 /* Back it out, if it fails on one */
839 for (i--; i >= 0; i--) {
840 ldb_next_del_trans(data->partitions[i]->module);
842 ldb_next_del_trans(module);
843 partition_metadata_del_trans(module);
849 * Because in prepare_commit this must come last, to ensure
850 * lock ordering we have to do this last here also
852 ret = partition_metadata_start_trans(module);
853 if (ret != LDB_SUCCESS) {
854 /* Back it out, if it fails on one */
855 for (i--; i >= 0; i--) {
856 ldb_next_del_trans(data->partitions[i]->module);
858 ldb_next_del_trans(module);
862 data->in_transaction++;
867 /* prepare for a commit */
868 static int partition_prepare_commit(struct ldb_module *module)
871 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
872 struct partition_private_data);
875 ret = ldb_next_prepare_commit(module);
876 if (ret != LDB_SUCCESS) {
880 for (i=0; data && data->partitions && data->partitions[i]; i++) {
881 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
882 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_prepare_commit() -> %s",
883 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn));
885 ret = ldb_next_prepare_commit(data->partitions[i]->module);
886 if (ret != LDB_SUCCESS) {
887 ldb_asprintf_errstring(ldb_module_get_ctx(module), "prepare_commit error on %s: %s",
888 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn),
889 ldb_errstring(ldb_module_get_ctx(module)));
894 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
895 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_prepare_commit() -> (metadata partition)");
898 /* metadata prepare commit must come last, as other partitions could modify
899 * the database inside the prepare commit method of a module */
900 return partition_metadata_prepare_commit(module);
904 /* end a transaction */
905 static int partition_end_trans(struct ldb_module *module)
909 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
910 struct partition_private_data);
914 if (data->in_transaction == 0) {
915 DEBUG(0,("partition end transaction mismatch\n"));
916 ret = LDB_ERR_OPERATIONS_ERROR;
918 data->in_transaction--;
921 ret2 = partition_metadata_end_trans(module);
922 if (ret2 != LDB_SUCCESS) {
926 for (i=0; data && data->partitions && data->partitions[i]; i++) {
927 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
928 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_end_trans() -> %s",
929 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn));
931 ret2 = ldb_next_end_trans(data->partitions[i]->module);
932 if (ret2 != LDB_SUCCESS) {
933 ldb_asprintf_errstring(ldb_module_get_ctx(module), "end_trans error on %s: %s",
934 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn),
935 ldb_errstring(ldb_module_get_ctx(module)));
940 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
941 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_end_trans() -> (metadata partition)");
943 ret2 = ldb_next_end_trans(module);
944 if (ret2 != LDB_SUCCESS) {
950 /* delete a transaction */
951 static int partition_del_trans(struct ldb_module *module)
953 int ret, final_ret = LDB_SUCCESS;
955 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
956 struct partition_private_data);
957 ret = partition_metadata_del_trans(module);
958 if (ret != LDB_SUCCESS) {
962 for (i=0; data && data->partitions && data->partitions[i]; i++) {
963 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
964 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_del_trans() -> %s",
965 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn));
967 ret = ldb_next_del_trans(data->partitions[i]->module);
968 if (ret != LDB_SUCCESS) {
969 ldb_asprintf_errstring(ldb_module_get_ctx(module), "del_trans error on %s: %s",
970 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn),
971 ldb_errstring(ldb_module_get_ctx(module)));
976 if (data->in_transaction == 0) {
977 DEBUG(0,("partition del transaction mismatch\n"));
978 return ldb_operr(ldb_module_get_ctx(module));
980 data->in_transaction--;
982 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
983 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_del_trans() -> (metadata partition)");
985 ret = ldb_next_del_trans(module);
986 if (ret != LDB_SUCCESS) {
992 int partition_primary_sequence_number(struct ldb_module *module, TALLOC_CTX *mem_ctx,
993 uint64_t *seq_number,
994 struct ldb_request *parent)
997 struct ldb_result *res;
998 struct ldb_seqnum_request *tseq;
999 struct ldb_seqnum_result *seqr;
1001 tseq = talloc_zero(mem_ctx, struct ldb_seqnum_request);
1003 return ldb_oom(ldb_module_get_ctx(module));
1005 tseq->type = LDB_SEQ_HIGHEST_SEQ;
1007 ret = dsdb_module_extended(module, tseq, &res,
1008 LDB_EXTENDED_SEQUENCE_NUMBER,
1010 DSDB_FLAG_NEXT_MODULE,
1012 if (ret != LDB_SUCCESS) {
1017 seqr = talloc_get_type_abort(res->extended->data,
1018 struct ldb_seqnum_result);
1019 if (seqr->flags & LDB_SEQ_TIMESTAMP_SEQUENCE) {
1021 return ldb_module_error(module, LDB_ERR_OPERATIONS_ERROR,
1022 "Primary backend in partition module returned a timestamp based seq");
1025 *seq_number = seqr->seq_num;
1032 * Older version of sequence number as sum of sequence numbers for each partition
1034 int partition_sequence_number_from_partitions(struct ldb_module *module,
1039 uint64_t seq_number = 0;
1040 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
1041 struct partition_private_data);
1043 ret = partition_primary_sequence_number(module, data, &seq_number, NULL);
1044 if (ret != LDB_SUCCESS) {
1048 /* Skip the lot if 'data' isn't here yet (initialisation) */
1049 for (i=0; data && data->partitions && data->partitions[i]; i++) {
1050 struct ldb_seqnum_request *tseq;
1051 struct ldb_seqnum_result *tseqr;
1052 struct ldb_request *treq;
1053 struct ldb_result *res = talloc_zero(data, struct ldb_result);
1055 return ldb_oom(ldb_module_get_ctx(module));
1057 tseq = talloc_zero(res, struct ldb_seqnum_request);
1060 return ldb_oom(ldb_module_get_ctx(module));
1062 tseq->type = LDB_SEQ_HIGHEST_SEQ;
1064 ret = ldb_build_extended_req(&treq, ldb_module_get_ctx(module), res,
1065 LDB_EXTENDED_SEQUENCE_NUMBER,
1069 ldb_extended_default_callback,
1071 LDB_REQ_SET_LOCATION(treq);
1072 if (ret != LDB_SUCCESS) {
1077 ret = partition_request(data->partitions[i]->module, treq);
1078 if (ret != LDB_SUCCESS) {
1082 ret = ldb_wait(treq->handle, LDB_WAIT_ALL);
1083 if (ret != LDB_SUCCESS) {
1087 tseqr = talloc_get_type(res->extended->data,
1088 struct ldb_seqnum_result);
1089 seq_number += tseqr->seq_num;
1099 * Newer version of sequence number using metadata tdb
1101 static int partition_sequence_number(struct ldb_module *module, struct ldb_request *req)
1103 struct ldb_extended *ext;
1104 struct ldb_seqnum_request *seq;
1105 struct ldb_seqnum_result *seqr;
1106 uint64_t seq_number;
1109 seq = talloc_get_type_abort(req->op.extended.data, struct ldb_seqnum_request);
1110 switch (seq->type) {
1112 ret = partition_metadata_sequence_number_increment(module, &seq_number);
1113 if (ret != LDB_SUCCESS) {
1118 case LDB_SEQ_HIGHEST_SEQ:
1119 ret = partition_metadata_sequence_number(module, &seq_number);
1120 if (ret != LDB_SUCCESS) {
1125 case LDB_SEQ_HIGHEST_TIMESTAMP:
1126 return ldb_module_error(module, LDB_ERR_OPERATIONS_ERROR,
1127 "LDB_SEQ_HIGHEST_TIMESTAMP not supported");
1130 ext = talloc_zero(req, struct ldb_extended);
1132 return ldb_module_oom(module);
1134 seqr = talloc_zero(ext, struct ldb_seqnum_result);
1137 return ldb_module_oom(module);
1139 ext->oid = LDB_EXTENDED_SEQUENCE_NUMBER;
1142 seqr->seq_num = seq_number;
1143 seqr->flags |= LDB_SEQ_GLOBAL_SEQUENCE;
1145 /* send request done */
1146 return ldb_module_done(req, NULL, ext, LDB_SUCCESS);
1150 static int partition_extended(struct ldb_module *module, struct ldb_request *req)
1152 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
1153 struct partition_private_data);
1154 struct partition_context *ac;
1157 /* if we aren't initialised yet go further */
1159 return ldb_next_request(module, req);
1162 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_SCHEMA_UPDATE_NOW_OID) == 0) {
1163 /* Update the metadata.tdb to increment the schema version if needed*/
1164 DEBUG(10, ("Incrementing the sequence_number after schema_update_now\n"));
1165 ret = partition_metadata_inc_schema_sequence(module);
1166 return ldb_module_done(req, NULL, NULL, ret);
1169 if (strcmp(req->op.extended.oid, LDB_EXTENDED_SEQUENCE_NUMBER) == 0) {
1170 return partition_sequence_number(module, req);
1173 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_CREATE_PARTITION_OID) == 0) {
1174 return partition_create(module, req);
1178 * as the extended operation has no dn
1179 * we need to send it to all partitions
1182 ac = partition_init_ctx(module, req);
1184 return ldb_operr(ldb_module_get_ctx(module));
1187 return partition_send_all(module, ac, req);
1190 static const struct ldb_module_ops ldb_partition_module_ops = {
1191 .name = "partition",
1192 .init_context = partition_init,
1193 .search = partition_search,
1194 .add = partition_add,
1195 .modify = partition_modify,
1196 .del = partition_delete,
1197 .rename = partition_rename,
1198 .extended = partition_extended,
1199 .start_transaction = partition_start_trans,
1200 .prepare_commit = partition_prepare_commit,
1201 .end_transaction = partition_end_trans,
1202 .del_transaction = partition_del_trans,
1205 int ldb_partition_module_init(const char *version)
1207 LDB_MODULE_CHECK_VERSION(version);
1208 return ldb_register_module(&ldb_partition_module_ops);