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authorAndrew Tridgell <tridge@samba.org>2009-09-14 13:13:12 -0700
committerAndrew Tridgell <tridge@samba.org>2009-09-14 13:13:12 -0700
commit3dd404abad878fa7e760ba50ce84fc80b82ea159 (patch)
tree86982aa8eda44b0de296f46171fdebb9a4be8597 /source4/dsdb/samdb/ldb_modules
parentb9ce122ff27b6d80e74e5b5fa580cd1574e816d7 (diff)
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s4-repl: handle rename in repl_meta_data
On a rename we need to update uSNChanged, and the max uSN for the partition
Diffstat (limited to 'source4/dsdb/samdb/ldb_modules')
-rw-r--r--source4/dsdb/samdb/ldb_modules/repl_meta_data.c97
1 files changed, 97 insertions, 0 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/repl_meta_data.c b/source4/dsdb/samdb/ldb_modules/repl_meta_data.c
index b9323b912b..f9411fe95f 100644
--- a/source4/dsdb/samdb/ldb_modules/repl_meta_data.c
+++ b/source4/dsdb/samdb/ldb_modules/repl_meta_data.c
@@ -932,6 +932,102 @@ static int replmd_modify(struct ldb_module *module, struct ldb_request *req)
return ldb_next_request(module, down_req);
}
+
+/*
+ handle a rename request
+
+ On a rename we need to do an extra ldb_modify which sets the
+ whenChanged and uSNChanged attributes
+ */
+static int replmd_rename(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_context *ldb;
+ int ret, i;
+ time_t t = time(NULL);
+ uint64_t seq_num = 0;
+ struct ldb_message *msg;
+ struct replmd_private *replmd_private =
+ talloc_get_type(ldb_module_get_private(module), struct replmd_private);
+
+ /* do not manipulate our control entries */
+ if (ldb_dn_is_special(req->op.mod.message->dn)) {
+ return ldb_next_request(module, req);
+ }
+
+ ldb = ldb_module_get_ctx(module);
+
+ ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_rename\n");
+
+ /* Get a sequence number from the backend */
+ ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ msg = ldb_msg_new(req);
+ if (msg == NULL) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ msg->dn = req->op.rename.olddn;
+
+ if (add_time_element(msg, "whenChanged", t) != LDB_SUCCESS) {
+ talloc_free(msg);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ msg->elements[0].flags = LDB_FLAG_MOD_REPLACE;
+
+ if (add_uint64_element(msg, "uSNChanged", seq_num) != LDB_SUCCESS) {
+ talloc_free(msg);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ msg->elements[1].flags = LDB_FLAG_MOD_REPLACE;
+
+ ret = ldb_modify(ldb, msg);
+ talloc_free(msg);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ret = replmd_load_NCs(module);
+ if (ret != 0) {
+ return ret;
+ }
+
+ /* now update the highest uSNs of the partitions that are
+ affected. Note that two partitions could be changing */
+ for (i=0; i<replmd_private->num_ncs; i++) {
+ if (ldb_dn_compare_base(replmd_private->ncs[i].dn,
+ req->op.rename.olddn) == 0) {
+ break;
+ }
+ }
+ if (i == replmd_private->num_ncs) {
+ DEBUG(0,(__location__ ": rename olddn outside tree? %s\n",
+ ldb_dn_get_linearized(req->op.rename.olddn)));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ replmd_private->ncs[i].mod_usn = seq_num;
+
+ for (i=0; i<replmd_private->num_ncs; i++) {
+ if (ldb_dn_compare_base(replmd_private->ncs[i].dn,
+ req->op.rename.newdn) == 0) {
+ break;
+ }
+ }
+ if (i == replmd_private->num_ncs) {
+ DEBUG(0,(__location__ ": rename newdn outside tree? %s\n",
+ ldb_dn_get_linearized(req->op.rename.newdn)));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ replmd_private->ncs[i].mod_usn = seq_num;
+
+ /* go on with the call chain */
+ return ldb_next_request(module, req);
+}
+
+
static int replmd_replicated_request_error(struct replmd_replicated_request *ar, int ret)
{
return ret;
@@ -2171,6 +2267,7 @@ _PUBLIC_ const struct ldb_module_ops ldb_repl_meta_data_module_ops = {
.init_context = replmd_init,
.add = replmd_add,
.modify = replmd_modify,
+ .rename = replmd_rename,
.extended = replmd_extended,
.start_transaction = replmd_start_transaction,
.prepare_commit = replmd_prepare_commit,