+
+/*
+ * Create UST channel and enable it on the tracer.
+ */
+int channel_ust_create(struct ltt_ust_session *usess,
+ struct lttng_channel *attr)
+{
+ int ret;
+ struct ltt_ust_channel *uchan;
+ //struct lttng_ust_channel_attr uattr;
+ //struct object_data *obj;
+
+ uchan = trace_ust_find_channel_by_name(usess->domain_global.channels,
+ attr->name);
+ if (uchan == NULL) {
+ uchan = trace_ust_create_channel(attr, usess->pathname);
+ if (uchan == NULL) {
+ ret = LTTCOMM_UST_CHAN_FAIL;
+ goto error;
+ }
+ rcu_read_lock();
+ hashtable_add_unique(usess->domain_global.channels, &uchan->node);
+ rcu_read_unlock();
+ } else {
+ ret = LTTCOMM_UST_CHAN_EXIST;
+ goto error;
+ }
+
+ /* TODO: NOTIFY ust application to update */
+ /*
+ ret = ustctl_create_channel(sock, usession->handle, &uattr, &obj);
+ if (ret < 0) {
+ ret = LTTCOMM_UST_CHAN_FAIL;
+ goto error;
+ }
+ */
+
+ /*
+ uchan->attr.overwrite = uattr.overwrite;
+ uchan->attr.subbuf_size = uattr.subbuf_size;
+ uchan->attr.num_subbuf = uattr.num_subbuf;
+ uchan->attr.switch_timer_interval = uattr.switch_timer_interval;
+ uchan->attr.read_timer_interval = uattr.read_timer_interval;
+ uchan->attr.output = uattr.output;
+ uchan->handle = obj->handle;
+ uchan->attr.shm_fd = obj->shm_fd;
+ uchan->attr.wait_fd = obj->wait_fd;
+ uchan->attr.memory_map_size = obj->memory_map_size;
+ uchan->obj = obj;
+ */
+
+ /* Add channel to session */
+ //rcu_read_lock();
+ //cds_list_add(&uchan->list, &usession->channels.head);
+ //usession->channels.count++;
+ //rcu_read_unlock();
+
+ //DBG2("Channel %s UST create successfully for sock:%d", uchan->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 = LTTCOMM_OK;
+#ifdef DISABLE
+ struct object_data obj;
+
+ obj.shm_fd = uchan->attr.shm_fd;
+ obj.wait_fd = uchan->attr.wait_fd;
+ obj.memory_map_size = uchan->attr.memory_map_size;
+ ret = ustctl_enable(sock, &obj);
+ if (ret < 0) {
+ ret = LTTCOMM_UST_CHAN_FAIL;
+ goto end;
+ }
+ ret = LTTCOMM_OK;
+end:
+#endif
+ 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 = LTTCOMM_OK;
+#ifdef DISABLE
+ struct object_data obj;
+
+ obj.shm_fd = uchan->attr.shm_fd;
+ obj.wait_fd = uchan->attr.wait_fd;
+ obj.memory_map_size = uchan->attr.memory_map_size;
+ ret = ustctl_disable(sock, &obj);
+ if (ret < 0) {
+ ret = LTTCOMM_UST_CHAN_FAIL;
+ goto end;
+ }
+ ret = LTTCOMM_OK;
+end:
+#endif
+ return ret;
+}