X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Ftrace-ust.c;h=c80d5e772de8c48e913b5399f23be7af785241c5;hp=77f5e2510552f36b784e38816d5539671e66d26f;hb=850767541647c102a299d7fbc39c97555ac70224;hpb=7c612c2e69f7b4ebf77fd369126befb71e561a8f

diff --git a/src/bin/lttng-sessiond/trace-ust.c b/src/bin/lttng-sessiond/trace-ust.c
index 77f5e2510..c80d5e772 100644
--- a/src/bin/lttng-sessiond/trace-ust.c
+++ b/src/bin/lttng-sessiond/trace-ust.c
@@ -128,6 +128,13 @@ struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht,
 	struct lttng_ht_node_str *node;
 	struct lttng_ht_iter iter;
 
+	/*
+	 * If we receive an empty string for channel name, it means the
+	 * default channel name is requested.
+	 */
+	if (name[0] == '\0')
+		name = DEFAULT_CHANNEL_NAME;
+
 	lttng_ht_lookup(ht, (void *)name, &iter);
 	node = lttng_ht_iter_get_node_str(&iter);
 	if (node == NULL) {
@@ -203,7 +210,7 @@ struct ltt_ust_session *trace_ust_create_session(uint64_t session_id)
 	 * during the session lifetime which is at the first enable channel and
 	 * only before start. The flag buffer_type_changed indicates the status.
 	 */
-	lus->buffer_type = LTTNG_BUFFER_PER_PID;
+	lus->buffer_type = LTTNG_BUFFER_PER_UID;
 	/* Once set to 1, the buffer_type is immutable for the session. */
 	lus->buffer_type_changed = 0;
 	/* Init it in case it get used after allocation. */
@@ -268,8 +275,16 @@ struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan)
 		break;
 	}
 
-	/* Copy channel name */
-	strncpy(luc->name, chan->name, sizeof(luc->name));
+	/*
+	 * If we receive an empty string for channel name, it means the
+	 * default channel name is requested.
+	 */
+	if (chan->name[0] == '\0') {
+		strncpy(luc->name, DEFAULT_CHANNEL_NAME, sizeof(luc->name));
+	} else {
+		/* Copy channel name */
+		strncpy(luc->name, chan->name, sizeof(luc->name));
+	}
 	luc->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
 
 	/* Init node */