+
+/*
+ * Create UST channel and enable it on the tracer.
+ */
+int channel_ust_create(struct ltt_ust_session *usession,
+ struct lttng_channel *chan, int sock)
+{
+ int ret;
+ struct lttng_channel *attr = chan;
+
+ /* Creating channel attributes if needed */
+ if (attr == NULL) {
+ attr = init_default_attr(LTTNG_DOMAIN_UST_PID);
+ if (attr == NULL) {
+ ret = LTTCOMM_FATAL;
+ goto error;
+ }
+ }
+
+ ret = ustctl_create_channel(sock, usession, attr);
+ if (ret < 0) {
+ ret = LTTCOMM_UST_CHAN_FAIL;
+ goto error;
+ }
+
+ DBG2("Channel %s UST create successfully for sock:%d", attr->name, sock);
+
+ ret = LTTCOMM_OK;
+
+error:
+ return ret;
+}
+
+/*
+ * Enable UST channel on the tracer.
+ */
+int channel_ust_enable(struct ltt_ust_session *usession,
+ struct ltt_ust_channel *uchan, int sock)
+{
+ int ret;
+ ret = LTTCOMM_OK;
+
+ ret = ustctl_enable_channel(sock, usession, uchan);
+ if (ret < 0) {
+ ret = LTTCOMM_UST_CHAN_FAIL;
+ goto error;
+ }
+
+ ret = LTTCOMM_OK;
+
+error:
+ return ret;
+}
+
+/*
+ * Disable UST channel on the tracer.
+ */
+int channel_ust_disable(struct ltt_ust_session *usession,
+ struct ltt_ust_channel *uchan, int sock)
+{
+ int ret;
+ ret = LTTCOMM_OK;
+
+ ret = ustctl_disable_channel(sock, usession, uchan);
+ if (ret < 0) {
+ ret = LTTCOMM_UST_CHAN_FAIL;
+ goto error;
+ }
+
+ ret = LTTCOMM_OK;
+
+error:
+ return ret;
+}