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-rw-r--r--source4/lib/ldb/modules/operational.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/source4/lib/ldb/modules/operational.c b/source4/lib/ldb/modules/operational.c
index 8b7d6b3518..51f0ce25e4 100644
--- a/source4/lib/ldb/modules/operational.c
+++ b/source4/lib/ldb/modules/operational.c
@@ -267,6 +267,29 @@ static int add_time_element(struct ldb_message *msg, const char *attr, time_t t)
return 0;
}
+/*
+ add a uint64_t element to a record
+*/
+static int add_uint64_element(struct ldb_message *msg, const char *attr, uint64_t v)
+{
+ struct ldb_message_element *el;
+
+ if (ldb_msg_find_element(msg, attr) != NULL) {
+ return 0;
+ }
+
+ if (ldb_msg_add_fmt(msg, attr, "%llu", v) != 0) {
+ return -1;
+ }
+
+ el = ldb_msg_find_element(msg, attr);
+ /* always set as replace. This works because on add ops, the flag
+ is ignored */
+ el->flags = LDB_FLAG_MOD_REPLACE;
+
+ return 0;
+}
+
/*
hook add record ops
@@ -292,6 +315,17 @@ static int operational_add(struct ldb_module *module, struct ldb_request *req)
talloc_free(msg2);
return -1;
}
+
+ /* see if the backend can give us the USN */
+ if (module->ldb->sequence_number != NULL) {
+ uint64_t seq_num = module->ldb->sequence_number(module->ldb);
+ if (add_uint64_element(msg2, "uSNCreated", seq_num) != 0 ||
+ add_uint64_element(msg2, "uSNChanged", seq_num) != 0) {
+ talloc_free(msg2);
+ return -1;
+ }
+ }
+
/* use the new structure for the call chain below this point */
req->op.add.message = msg2;
/* go on with the call chain */
@@ -326,6 +360,15 @@ static int operational_modify(struct ldb_module *module, struct ldb_request *req
talloc_free(msg2);
return -1;
}
+
+ /* update the records USN if possible */
+ if (module->ldb->sequence_number != NULL &&
+ add_uint64_element(msg2, "uSNChanged",
+ module->ldb->sequence_number(module->ldb)) != 0) {
+ talloc_free(msg2);
+ return -1;
+ }
+
/* use the new structure for the call chain below this point */
req->op.mod.message = msg2;
/* go on with the call chain */