X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fbin%2Flttng-relayd%2Fsessiond-trace-chunks.c;h=f2dfa23a11826d935ec1e2f189d9bdeef4e6b958;hb=c51b2177a083e94884c11cb3c2a6bbfe9dc463f7;hp=01d5b3c2d695583f6e6b09ee30ed4aafff2ab623;hpb=c35f9726a22f1d93e14589688d830efccda196f3;p=lttng-tools.git

diff --git a/src/bin/lttng-relayd/sessiond-trace-chunks.c b/src/bin/lttng-relayd/sessiond-trace-chunks.c
index 01d5b3c2d..f2dfa23a1 100644
--- a/src/bin/lttng-relayd/sessiond-trace-chunks.c
+++ b/src/bin/lttng-relayd/sessiond-trace-chunks.c
@@ -151,6 +151,10 @@ static
 void trace_chunk_registry_ht_element_put(
 		struct trace_chunk_registry_ht_element *element)
 {
+	if (!element) {
+		return;
+	}
+
 	urcu_ref_put(&element->ref, trace_chunk_registry_ht_element_release);
 }
 
@@ -213,6 +217,7 @@ int trace_chunk_registry_ht_element_create(
 	urcu_ref_init(&new_element->ref);
 	cds_lfht_node_init(&new_element->ht_node);
 	new_element->trace_chunk_registry = trace_chunk_registry;
+	trace_chunk_registry = NULL;
 
 	/* Attempt to publish the new element. */
 	rcu_read_lock();
@@ -261,6 +266,7 @@ end:
 		ERR("Failed to create trace chunk registry for session daemon {%s}",
 				uuid_str);
 	}
+	lttng_trace_chunk_registry_destroy(trace_chunk_registry);
 	return ret;
 }
 
@@ -474,3 +480,39 @@ sessiond_trace_chunk_registry_get_chunk(
 end:
 	return chunk;
 }
+
+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[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;
+}