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 /* see if we are still up-to-date */
553 ret = partition_reload_if_required(module, data, req);
554 if (ret != LDB_SUCCESS) {
558 p = find_partition(data, NULL, req);
560 /* the caller specified what partition they want the
561 * search - just pass it on
563 return ldb_next_request(p->module, req);
566 /* Get back the search options from the search control, and mark it as
567 * non-critical (to make backends and also dcpromo happy).
569 if (search_control) {
570 search_options = talloc_get_type(search_control->data, struct ldb_search_options_control);
571 search_control->critical = 0;
575 /* Remove the "domain_scope" control, so we don't confuse a backend
577 if (domain_scope_control && !ldb_save_controls(domain_scope_control, req, &saved_controls)) {
578 return ldb_oom(ldb_module_get_ctx(module));
581 /* if we aren't initialised yet go further */
582 if (!data || !data->partitions) {
583 return ldb_next_request(module, req);
586 /* Special DNs without specified partition should go further */
587 if (ldb_dn_is_special(req->op.search.base)) {
588 return ldb_next_request(module, req);
591 /* Locate the options */
592 domain_scope = (search_options
593 && (search_options->search_options & LDB_SEARCH_OPTION_DOMAIN_SCOPE))
594 || domain_scope_control;
595 phantom_root = search_options
596 && (search_options->search_options & LDB_SEARCH_OPTION_PHANTOM_ROOT);
598 /* Remove handled options from the search control flag */
599 if (search_options) {
600 search_options->search_options = search_options->search_options
601 & ~LDB_SEARCH_OPTION_DOMAIN_SCOPE
602 & ~LDB_SEARCH_OPTION_PHANTOM_ROOT;
605 ac = partition_init_ctx(module, req);
607 return ldb_operr(ldb_module_get_ctx(module));
610 ldb = ldb_module_get_ctx(ac->module);
611 lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
612 struct loadparm_context);
614 /* Search from the base DN */
615 if (ldb_dn_is_null(req->op.search.base)) {
617 return ldb_error(ldb, LDB_ERR_NO_SUCH_OBJECT, "empty base DN");
619 return partition_send_all(module, ac, req);
622 for (i=0; data->partitions[i]; i++) {
623 bool match = false, stop = false;
625 if (data->partitions[i]->partial_replica && no_gc_control != NULL) {
626 if (ldb_dn_compare_base(data->partitions[i]->ctrl->dn,
627 req->op.search.base) == 0) {
628 /* base DN is in a partial replica
629 with the NO_GLOBAL_CATALOG
630 control. This partition is invisible */
631 /* DEBUG(0,("DENYING NON-GC OP: %s\n", ldb_module_call_chain(req, req))); */
637 /* Phantom root: Find all partitions under the
638 * search base. We match if:
640 * 1) the DN we are looking for exactly matches a
641 * certain partition and always stop
642 * 2) the DN we are looking for is a parent of certain
643 * partitions and it isn't a scope base search
644 * 3) the DN we are looking for is a child of a certain
645 * partition and always stop
646 * - we don't need to go any further up in the
649 if (ldb_dn_compare(data->partitions[i]->ctrl->dn,
650 req->op.search.base) == 0) {
655 (ldb_dn_compare_base(req->op.search.base,
656 data->partitions[i]->ctrl->dn) == 0 &&
657 req->op.search.scope != LDB_SCOPE_BASE)) {
661 ldb_dn_compare_base(data->partitions[i]->ctrl->dn,
662 req->op.search.base) == 0) {
664 stop = true; /* note that this relies on partition ordering */
667 /* Domain scope: Find all partitions under the search
670 * We generate referral candidates if we haven't
671 * specified the domain scope control, haven't a base
672 * search* scope and the DN we are looking for is a real
673 * predecessor of certain partitions. When a new
674 * referral candidate is nearer to the DN than an
675 * existing one delete the latter (we want to have only
676 * the closest ones). When we checked this for all
677 * candidates we have the final referrals.
679 * We match if the DN we are looking for is a child of
680 * a certain partition or the partition
681 * DN itself - we don't need to go any further
682 * up in the hierarchy!
684 if ((!domain_scope) &&
685 (req->op.search.scope != LDB_SCOPE_BASE) &&
686 (ldb_dn_compare_base(req->op.search.base,
687 data->partitions[i]->ctrl->dn) == 0) &&
688 (ldb_dn_compare(req->op.search.base,
689 data->partitions[i]->ctrl->dn) != 0)) {
690 char *ref = talloc_asprintf(ac,
692 lpcfg_dnsdomain(lp_ctx),
693 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn),
694 req->op.search.scope == LDB_SCOPE_ONELEVEL ? "??base" : "");
700 /* Initialise the referrals list */
701 if (ac->referrals == NULL) {
702 ac->referrals = (const char **) str_list_make_empty(ac);
703 if (ac->referrals == NULL) {
708 /* Check if the new referral candidate is
709 * closer to the base DN than already
710 * saved ones and delete the latters */
712 while (ac->referrals[j] != NULL) {
713 if (strstr(ac->referrals[j],
714 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn)) != NULL) {
715 str_list_remove(ac->referrals,
722 /* Add our new candidate */
723 ac->referrals = str_list_add(ac->referrals, ref);
727 if (ac->referrals == NULL) {
731 if (ldb_dn_compare_base(data->partitions[i]->ctrl->dn, req->op.search.base) == 0) {
733 stop = true; /* note that this relies on partition ordering */
738 ret = partition_prep_request(ac, data->partitions[i]);
739 if (ret != LDB_SUCCESS) {
747 /* Perhaps we didn't match any partitions. Try the main partition */
748 if (ac->num_requests == 0) {
750 return ldb_next_request(module, req);
753 /* fire the first one */
754 return partition_call_first(ac);
758 static int partition_add(struct ldb_module *module, struct ldb_request *req)
760 return partition_replicate(module, req, req->op.add.message->dn);
764 static int partition_modify(struct ldb_module *module, struct ldb_request *req)
766 return partition_replicate(module, req, req->op.mod.message->dn);
770 static int partition_delete(struct ldb_module *module, struct ldb_request *req)
772 return partition_replicate(module, req, req->op.del.dn);
776 static int partition_rename(struct ldb_module *module, struct ldb_request *req)
779 struct dsdb_partition *backend, *backend2;
781 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
782 struct partition_private_data);
784 /* Skip the lot if 'data' isn't here yet (initialisation) */
786 return ldb_operr(ldb_module_get_ctx(module));
789 backend = find_partition(data, req->op.rename.olddn, req);
790 backend2 = find_partition(data, req->op.rename.newdn, req);
792 if ((backend && !backend2) || (!backend && backend2)) {
793 return LDB_ERR_AFFECTS_MULTIPLE_DSAS;
796 if (backend != backend2) {
797 ldb_asprintf_errstring(ldb_module_get_ctx(module),
798 "Cannot rename from %s in %s to %s in %s: %s",
799 ldb_dn_get_linearized(req->op.rename.olddn),
800 ldb_dn_get_linearized(backend->ctrl->dn),
801 ldb_dn_get_linearized(req->op.rename.newdn),
802 ldb_dn_get_linearized(backend2->ctrl->dn),
803 ldb_strerror(LDB_ERR_AFFECTS_MULTIPLE_DSAS));
804 return LDB_ERR_AFFECTS_MULTIPLE_DSAS;
807 return partition_replicate(module, req, req->op.rename.olddn);
810 /* start a transaction */
811 static int partition_start_trans(struct ldb_module *module)
815 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
816 struct partition_private_data);
817 /* Look at base DN */
818 /* Figure out which partition it is under */
819 /* Skip the lot if 'data' isn't here yet (initialization) */
820 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
821 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_start_trans() -> (metadata partition)");
823 ret = ldb_next_start_trans(module);
824 if (ret != LDB_SUCCESS) {
828 ret = partition_reload_if_required(module, data, NULL);
829 if (ret != LDB_SUCCESS) {
833 for (i=0; data && data->partitions && data->partitions[i]; i++) {
834 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
835 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_start_trans() -> %s",
836 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn));
838 ret = ldb_next_start_trans(data->partitions[i]->module);
839 if (ret != LDB_SUCCESS) {
840 /* Back it out, if it fails on one */
841 for (i--; i >= 0; i--) {
842 ldb_next_del_trans(data->partitions[i]->module);
844 ldb_next_del_trans(module);
849 data->in_transaction++;
854 /* prepare for a commit */
855 static int partition_prepare_commit(struct ldb_module *module)
858 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
859 struct partition_private_data);
861 for (i=0; data && data->partitions && data->partitions[i]; i++) {
864 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
865 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_prepare_commit() -> %s",
866 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn));
868 ret = ldb_next_prepare_commit(data->partitions[i]->module);
869 if (ret != LDB_SUCCESS) {
870 ldb_asprintf_errstring(ldb_module_get_ctx(module), "prepare_commit error on %s: %s",
871 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn),
872 ldb_errstring(ldb_module_get_ctx(module)));
877 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
878 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_prepare_commit() -> (metadata partition)");
880 return ldb_next_prepare_commit(module);
884 /* end a transaction */
885 static int partition_end_trans(struct ldb_module *module)
889 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
890 struct partition_private_data);
894 if (data->in_transaction == 0) {
895 DEBUG(0,("partition end transaction mismatch\n"));
896 ret = LDB_ERR_OPERATIONS_ERROR;
898 data->in_transaction--;
901 for (i=0; data && data->partitions && data->partitions[i]; i++) {
902 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
903 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_end_trans() -> %s",
904 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn));
906 ret2 = ldb_next_end_trans(data->partitions[i]->module);
907 if (ret2 != LDB_SUCCESS) {
908 ldb_asprintf_errstring(ldb_module_get_ctx(module), "end_trans error on %s: %s",
909 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn),
910 ldb_errstring(ldb_module_get_ctx(module)));
915 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
916 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_end_trans() -> (metadata partition)");
918 ret2 = ldb_next_end_trans(module);
919 if (ret2 != LDB_SUCCESS) {
925 /* delete a transaction */
926 static int partition_del_trans(struct ldb_module *module)
928 int ret, final_ret = LDB_SUCCESS;
930 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
931 struct partition_private_data);
932 for (i=0; data && data->partitions && data->partitions[i]; i++) {
933 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
934 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_del_trans() -> %s",
935 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn));
937 ret = ldb_next_del_trans(data->partitions[i]->module);
938 if (ret != LDB_SUCCESS) {
939 ldb_asprintf_errstring(ldb_module_get_ctx(module), "del_trans error on %s: %s",
940 ldb_dn_get_linearized(data->partitions[i]->ctrl->dn),
941 ldb_errstring(ldb_module_get_ctx(module)));
946 if (data->in_transaction == 0) {
947 DEBUG(0,("partition del transaction mismatch\n"));
948 return ldb_operr(ldb_module_get_ctx(module));
950 data->in_transaction--;
952 if ((module && ldb_module_flags(ldb_module_get_ctx(module)) & LDB_FLG_ENABLE_TRACING)) {
953 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_TRACE, "partition_del_trans() -> (metadata partition)");
955 ret = ldb_next_del_trans(module);
956 if (ret != LDB_SUCCESS) {
962 int partition_primary_sequence_number(struct ldb_module *module, TALLOC_CTX *mem_ctx,
963 enum ldb_sequence_type type, uint64_t *seq_number)
966 struct ldb_result *res;
967 struct ldb_seqnum_request *tseq;
968 struct ldb_request *treq;
969 struct ldb_seqnum_result *seqr;
970 res = talloc_zero(mem_ctx, struct ldb_result);
972 return ldb_oom(ldb_module_get_ctx(module));
974 tseq = talloc_zero(res, struct ldb_seqnum_request);
977 return ldb_oom(ldb_module_get_ctx(module));
981 ret = ldb_build_extended_req(&treq, ldb_module_get_ctx(module), res,
982 LDB_EXTENDED_SEQUENCE_NUMBER,
986 ldb_extended_default_callback,
988 LDB_REQ_SET_LOCATION(treq);
989 if (ret != LDB_SUCCESS) {
994 ret = ldb_next_request(module, treq);
995 if (ret != LDB_SUCCESS) {
999 ret = ldb_wait(treq->handle, LDB_WAIT_ALL);
1000 if (ret != LDB_SUCCESS) {
1005 seqr = talloc_get_type(res->extended->data,
1006 struct ldb_seqnum_result);
1007 if (seqr->flags & LDB_SEQ_TIMESTAMP_SEQUENCE) {
1008 ret = LDB_ERR_OPERATIONS_ERROR;
1009 ldb_set_errstring(ldb_module_get_ctx(module), "Primary backend in partitions module returned a timestamp based seq number (must return a normal number)");
1013 *seq_number = seqr->seq_num;
1019 /* FIXME: This function is still semi-async */
1020 static int partition_sequence_number(struct ldb_module *module, struct ldb_request *req)
1024 uint64_t seq_number = 0;
1025 uint64_t timestamp_sequence = 0;
1026 uint64_t timestamp = 0;
1027 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
1028 struct partition_private_data);
1029 struct ldb_seqnum_request *seq;
1030 struct ldb_seqnum_result *seqr;
1031 struct ldb_request *treq;
1032 struct ldb_seqnum_request *tseq;
1033 struct ldb_seqnum_result *tseqr;
1034 struct ldb_extended *ext;
1035 struct ldb_result *res;
1036 struct dsdb_partition *p;
1038 p = find_partition(data, NULL, req);
1040 /* the caller specified what partition they want the
1041 * sequence number operation on - just pass it on
1043 return ldb_next_request(p->module, req);
1046 seq = talloc_get_type(req->op.extended.data, struct ldb_seqnum_request);
1048 switch (seq->type) {
1050 case LDB_SEQ_HIGHEST_SEQ:
1052 ret = partition_primary_sequence_number(module, req, seq->type, &seq_number);
1053 if (ret != LDB_SUCCESS) {
1057 /* Skip the lot if 'data' isn't here yet (initialisation) */
1058 for (i=0; data && data->partitions && data->partitions[i]; i++) {
1060 res = talloc_zero(req, struct ldb_result);
1062 return ldb_oom(ldb_module_get_ctx(module));
1064 tseq = talloc_zero(res, struct ldb_seqnum_request);
1067 return ldb_oom(ldb_module_get_ctx(module));
1069 tseq->type = seq->type;
1071 ret = ldb_build_extended_req(&treq, ldb_module_get_ctx(module), res,
1072 LDB_EXTENDED_SEQUENCE_NUMBER,
1076 ldb_extended_default_callback,
1078 LDB_REQ_SET_LOCATION(treq);
1079 if (ret != LDB_SUCCESS) {
1084 ret = ldb_request_add_control(treq,
1085 DSDB_CONTROL_CURRENT_PARTITION_OID,
1086 false, data->partitions[i]->ctrl);
1087 if (ret != LDB_SUCCESS) {
1092 ret = partition_request(data->partitions[i]->module, treq);
1093 if (ret != LDB_SUCCESS) {
1097 ret = ldb_wait(treq->handle, LDB_WAIT_ALL);
1098 if (ret != LDB_SUCCESS) {
1102 tseqr = talloc_get_type(res->extended->data,
1103 struct ldb_seqnum_result);
1104 if (tseqr->flags & LDB_SEQ_TIMESTAMP_SEQUENCE) {
1105 timestamp_sequence = MAX(timestamp_sequence,
1108 seq_number += tseqr->seq_num;
1113 case LDB_SEQ_HIGHEST_TIMESTAMP:
1115 res = talloc_zero(req, struct ldb_result);
1117 return ldb_oom(ldb_module_get_ctx(module));
1120 tseq = talloc_zero(res, struct ldb_seqnum_request);
1123 return ldb_oom(ldb_module_get_ctx(module));
1125 tseq->type = LDB_SEQ_HIGHEST_TIMESTAMP;
1127 ret = ldb_build_extended_req(&treq, ldb_module_get_ctx(module), res,
1128 LDB_EXTENDED_SEQUENCE_NUMBER,
1132 ldb_extended_default_callback,
1134 LDB_REQ_SET_LOCATION(treq);
1135 if (ret != LDB_SUCCESS) {
1140 ret = ldb_next_request(module, treq);
1141 if (ret != LDB_SUCCESS) {
1145 ret = ldb_wait(treq->handle, LDB_WAIT_ALL);
1146 if (ret != LDB_SUCCESS) {
1151 tseqr = talloc_get_type(res->extended->data,
1152 struct ldb_seqnum_result);
1153 timestamp = tseqr->seq_num;
1157 /* Skip the lot if 'data' isn't here yet (initialisation) */
1158 for (i=0; data && data->partitions && data->partitions[i]; i++) {
1160 res = talloc_zero(req, struct ldb_result);
1162 return ldb_oom(ldb_module_get_ctx(module));
1165 tseq = talloc_zero(res, struct ldb_seqnum_request);
1168 return ldb_oom(ldb_module_get_ctx(module));
1170 tseq->type = LDB_SEQ_HIGHEST_TIMESTAMP;
1172 ret = ldb_build_extended_req(&treq, ldb_module_get_ctx(module), res,
1173 LDB_EXTENDED_SEQUENCE_NUMBER,
1177 ldb_extended_default_callback,
1179 LDB_REQ_SET_LOCATION(treq);
1180 if (ret != LDB_SUCCESS) {
1185 ret = ldb_request_add_control(treq,
1186 DSDB_CONTROL_CURRENT_PARTITION_OID,
1187 false, data->partitions[i]->ctrl);
1188 if (ret != LDB_SUCCESS) {
1193 ret = partition_request(data->partitions[i]->module, treq);
1194 if (ret != LDB_SUCCESS) {
1198 ret = ldb_wait(treq->handle, LDB_WAIT_ALL);
1199 if (ret != LDB_SUCCESS) {
1204 tseqr = talloc_get_type(res->extended->data,
1205 struct ldb_seqnum_result);
1206 timestamp = MAX(timestamp, tseqr->seq_num);
1214 ext = talloc_zero(req, struct ldb_extended);
1216 return ldb_oom(ldb_module_get_ctx(module));
1218 seqr = talloc_zero(ext, struct ldb_seqnum_result);
1221 return ldb_oom(ldb_module_get_ctx(module));
1223 ext->oid = LDB_EXTENDED_SEQUENCE_NUMBER;
1226 switch (seq->type) {
1228 case LDB_SEQ_HIGHEST_SEQ:
1230 /* Has someone above set a timebase sequence? */
1231 if (timestamp_sequence) {
1232 seqr->seq_num = (((unsigned long long)timestamp << 24) | (seq_number & 0xFFFFFF));
1234 seqr->seq_num = seq_number;
1237 if (timestamp_sequence > seqr->seq_num) {
1238 seqr->seq_num = timestamp_sequence;
1239 seqr->flags |= LDB_SEQ_TIMESTAMP_SEQUENCE;
1242 seqr->flags |= LDB_SEQ_GLOBAL_SEQUENCE;
1244 case LDB_SEQ_HIGHEST_TIMESTAMP:
1245 seqr->seq_num = timestamp;
1249 if (seq->type == LDB_SEQ_NEXT) {
1253 /* send request done */
1254 return ldb_module_done(req, NULL, ext, LDB_SUCCESS);
1258 static int partition_extended(struct ldb_module *module, struct ldb_request *req)
1260 struct partition_private_data *data = talloc_get_type(ldb_module_get_private(module),
1261 struct partition_private_data);
1262 struct partition_context *ac;
1265 /* if we aren't initialised yet go further */
1267 return ldb_next_request(module, req);
1270 /* see if we are still up-to-date */
1271 ret = partition_reload_if_required(module, data, req);
1272 if (ret != LDB_SUCCESS) {
1276 if (strcmp(req->op.extended.oid, LDB_EXTENDED_SEQUENCE_NUMBER) == 0) {
1277 return partition_sequence_number(module, req);
1280 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_CREATE_PARTITION_OID) == 0) {
1281 return partition_create(module, req);
1285 * as the extended operation has no dn
1286 * we need to send it to all partitions
1289 ac = partition_init_ctx(module, req);
1291 return ldb_operr(ldb_module_get_ctx(module));
1294 return partition_send_all(module, ac, req);
1297 static const struct ldb_module_ops ldb_partition_module_ops = {
1298 .name = "partition",
1299 .init_context = partition_init,
1300 .search = partition_search,
1301 .add = partition_add,
1302 .modify = partition_modify,
1303 .del = partition_delete,
1304 .rename = partition_rename,
1305 .extended = partition_extended,
1306 .start_transaction = partition_start_trans,
1307 .prepare_commit = partition_prepare_commit,
1308 .end_transaction = partition_end_trans,
1309 .del_transaction = partition_del_trans,
1312 int ldb_partition_module_init(const char *version)
1314 LDB_MODULE_CHECK_VERSION(version);
1315 return ldb_register_module(&ldb_partition_module_ops);