+ } else {
+ ret = lttng_kconsumer_snapshot_channel(msg.u.snapshot_channel.key,
+ msg.u.snapshot_channel.pathname,
+ msg.u.snapshot_channel.relayd_id,
+ msg.u.snapshot_channel.nb_packets_per_stream,
+ ctx);
+ if (ret < 0) {
+ ERR("Snapshot channel failed");
+ ret_code = LTTCOMM_CONSUMERD_CHAN_NOT_FOUND;
+ }
+ }
+
+ health_code_update();
+
+ ret = consumer_send_status_msg(sock, ret_code);
+ if (ret < 0) {
+ /* Somehow, the session daemon is not responding anymore. */
+ goto end_nosignal;
+ }
+ break;
+ }
+ case LTTNG_CONSUMER_DESTROY_CHANNEL:
+ {
+ uint64_t key = msg.u.destroy_channel.key;
+ struct lttng_consumer_channel *channel;
+
+ channel = consumer_find_channel(key);
+ if (!channel) {
+ ERR("Kernel consumer destroy channel %" PRIu64 " not found", key);
+ ret_code = LTTCOMM_CONSUMERD_CHAN_NOT_FOUND;
+ }
+
+ health_code_update();
+
+ ret = consumer_send_status_msg(sock, ret_code);
+ if (ret < 0) {
+ /* Somehow, the session daemon is not responding anymore. */
+ goto end_nosignal;
+ }
+
+ health_code_update();
+
+ /* Stop right now if no channel was found. */
+ if (!channel) {
+ goto end_nosignal;
+ }
+
+ /*
+ * This command should ONLY be issued for channel with streams set in
+ * no monitor mode.
+ */
+ assert(!channel->monitor);
+
+ /*
+ * The refcount should ALWAYS be 0 in the case of a channel in no
+ * monitor mode.
+ */
+ assert(!uatomic_sub_return(&channel->refcount, 1));
+
+ consumer_del_channel(channel);
+
+ goto end_nosignal;
+ }
+ case LTTNG_CONSUMER_DISCARDED_EVENTS:
+ {
+ uint64_t ret;
+ struct lttng_consumer_channel *channel;
+ uint64_t id = msg.u.discarded_events.session_id;
+ uint64_t key = msg.u.discarded_events.channel_key;
+
+ DBG("Kernel consumer discarded events command for session id %"
+ PRIu64 ", channel key %" PRIu64, id, key);
+
+ channel = consumer_find_channel(key);
+ if (!channel) {
+ ERR("Kernel consumer discarded events channel %"
+ PRIu64 " not found", key);
+ ret = 0;
+ } else {
+ ret = channel->discarded_events;
+ }
+
+ health_code_update();
+
+ /* Send back returned value to session daemon */
+ ret = lttcomm_send_unix_sock(sock, &ret, sizeof(ret));
+ if (ret < 0) {
+ PERROR("send discarded events");
+ goto error_fatal;
+ }
+
+ break;
+ }
+ case LTTNG_CONSUMER_LOST_PACKETS:
+ {
+ uint64_t ret;
+ struct lttng_consumer_channel *channel;
+ uint64_t id = msg.u.lost_packets.session_id;
+ uint64_t key = msg.u.lost_packets.channel_key;
+
+ DBG("Kernel consumer lost packets command for session id %"
+ PRIu64 ", channel key %" PRIu64, id, key);
+
+ channel = consumer_find_channel(key);
+ if (!channel) {
+ ERR("Kernel consumer lost packets channel %"
+ PRIu64 " not found", key);
+ ret = 0;
+ } else {
+ ret = channel->lost_packets;