+
+int sessiond_trace_chunk_registry_chunk_exists(
+ struct sessiond_trace_chunk_registry *sessiond_registry,
+ const lttng_uuid sessiond_uuid,
+ uint64_t session_id, uint64_t chunk_id, bool *chunk_exists)
+{
+ int ret;
+ struct trace_chunk_registry_ht_element *element;
+ struct trace_chunk_registry_ht_key key;
+
+ lttng_uuid_copy(key.sessiond_uuid, sessiond_uuid);
+ element = trace_chunk_registry_ht_element_find(sessiond_registry, &key);
+ if (!element) {
+ char uuid_str[LTTNG_UUID_STR_LEN];
+
+ lttng_uuid_to_str(sessiond_uuid, uuid_str);
+ /*
+ * While this certainly means that the chunk does not exist,
+ * it is unexpected for a chunk existence query to target a
+ * session daemon that does not have an active
+ * connection/registry. This would indicate a protocol
+ * (or internal) error.
+ */
+ ERR("Failed to find trace chunk registry of sessiond {%s}",
+ uuid_str);
+ ret = -1;
+ goto end;
+ }
+
+ ret = lttng_trace_chunk_registry_chunk_exists(
+ element->trace_chunk_registry,
+ session_id, chunk_id, chunk_exists);
+ trace_chunk_registry_ht_element_put(element);
+end:
+ return ret;
+}