X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fust-app.c;h=58308dec801f0bef53dedada426ba7bd574e51e8;hp=856de63a3f24152d03944c003bfe28c890f4847a;hb=495dece518e24e6c8563c588be77b5e23e060a02;hpb=d248f3c28f1697b44615d368baadb04a94ceae04

diff --git a/src/bin/lttng-sessiond/ust-app.c b/src/bin/lttng-sessiond/ust-app.c
index 856de63a3..58308dec8 100644
--- a/src/bin/lttng-sessiond/ust-app.c
+++ b/src/bin/lttng-sessiond/ust-app.c
@@ -6486,6 +6486,17 @@ enum lttng_error_code ust_app_create_channel_subdirectories(
 	{
 		struct ust_app *app;
 
+		/*
+		 * Create the toplevel ust/ directory in case no apps are running.
+		 */
+		chunk_status = lttng_trace_chunk_create_subdirectory(
+				usess->current_trace_chunk,
+				DEFAULT_UST_TRACE_DIR);
+		if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+			ret = LTTNG_ERR_CREATE_DIR_FAIL;
+			goto error;
+		}
+
 		cds_lfht_for_each_entry(ust_app_ht->ht, &iter.iter, app,
 				pid_n.node) {
 			struct ust_app_session *ua_sess;