+ case LTTNG_CONSUMER_DISCARDED_EVENTS:
+ {
+ ssize_t ret;
+ uint64_t count;
+ 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);
+ count = 0;
+ } else {
+ count = channel->discarded_events;
+ }
+
+ health_code_update();
+
+ /* Send back returned value to session daemon */
+ ret = lttcomm_send_unix_sock(sock, &count, sizeof(count));
+ if (ret < 0) {
+ PERROR("send discarded events");
+ goto error_fatal;
+ }
+
+ break;
+ }
+ case LTTNG_CONSUMER_LOST_PACKETS:
+ {
+ ssize_t ret;
+ uint64_t count;
+ 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);
+ count = 0;
+ } else {
+ count = channel->lost_packets;
+ }
+
+ health_code_update();
+
+ /* Send back returned value to session daemon */
+ ret = lttcomm_send_unix_sock(sock, &count, sizeof(count));
+ if (ret < 0) {
+ PERROR("send lost packets");
+ goto error_fatal;
+ }
+
+ break;
+ }
+ case LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE:
+ {
+ int channel_monitor_pipe;
+
+ ret_code = LTTCOMM_CONSUMERD_SUCCESS;
+ /* Successfully received the command's type. */
+ ret = consumer_send_status_msg(sock, ret_code);
+ if (ret < 0) {
+ goto error_fatal;
+ }
+
+ ret = lttcomm_recv_fds_unix_sock(sock, &channel_monitor_pipe,
+ 1);
+ if (ret != sizeof(channel_monitor_pipe)) {
+ ERR("Failed to receive channel monitor pipe");
+ goto error_fatal;
+ }
+
+ DBG("Received channel monitor pipe (%d)", channel_monitor_pipe);
+ ret = consumer_timer_thread_set_channel_monitor_pipe(
+ channel_monitor_pipe);
+ if (!ret) {
+ int flags;
+
+ ret_code = LTTCOMM_CONSUMERD_SUCCESS;
+ /* Set the pipe as non-blocking. */
+ ret = fcntl(channel_monitor_pipe, F_GETFL, 0);
+ if (ret == -1) {
+ PERROR("fcntl get flags of the channel monitoring pipe");
+ goto error_fatal;
+ }
+ flags = ret;
+
+ ret = fcntl(channel_monitor_pipe, F_SETFL,
+ flags | O_NONBLOCK);
+ if (ret == -1) {
+ PERROR("fcntl set O_NONBLOCK flag of the channel monitoring pipe");
+ goto error_fatal;
+ }
+ DBG("Channel monitor pipe set as non-blocking");
+ } else {
+ ret_code = LTTCOMM_CONSUMERD_ALREADY_SET;
+ }
+ ret = consumer_send_status_msg(sock, ret_code);
+ if (ret < 0) {
+ goto error_fatal;
+ }
+ break;
+ }
+ case LTTNG_CONSUMER_ROTATE_CHANNEL:
+ {
+ struct lttng_consumer_channel *channel;
+ uint64_t key = msg.u.rotate_channel.key;
+
+ DBG("Consumer rotate channel %" PRIu64, key);
+
+ channel = consumer_find_channel(key);
+ if (!channel) {
+ ERR("Channel %" PRIu64 " not found", key);
+ ret_code = LTTCOMM_CONSUMERD_CHAN_NOT_FOUND;
+ } else {
+ /*
+ * Sample the rotate position of all the streams in this channel.
+ */
+ ret = lttng_consumer_rotate_channel(channel, key,
+ msg.u.rotate_channel.pathname,
+ msg.u.rotate_channel.relayd_id,
+ msg.u.rotate_channel.metadata,
+ msg.u.rotate_channel.new_chunk_id,
+ ctx);
+ if (ret < 0) {
+ ERR("Rotate channel failed");
+ ret_code = LTTCOMM_CONSUMERD_ROTATION_FAIL;
+ }
+
+ 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;
+ }
+ if (channel) {
+ /* Rotate the streams that are ready right now. */
+ ret = lttng_consumer_rotate_ready_streams(
+ channel, key, ctx);
+ if (ret < 0) {
+ ERR("Rotate ready streams failed");
+ }
+ }
+
+ break;
+ }
+ case LTTNG_CONSUMER_ROTATE_RENAME:
+ {
+ DBG("Consumer rename session %" PRIu64 " after rotation, old path = \"%s\", new path = \"%s\"",
+ msg.u.rotate_rename.session_id,
+ msg.u.rotate_rename.old_path,
+ msg.u.rotate_rename.new_path);
+ ret = lttng_consumer_rotate_rename(msg.u.rotate_rename.old_path,
+ msg.u.rotate_rename.new_path,
+ msg.u.rotate_rename.uid,
+ msg.u.rotate_rename.gid,
+ msg.u.rotate_rename.relayd_id);
+ if (ret < 0) {
+ ERR("Rotate rename failed");
+ ret_code = LTTCOMM_CONSUMERD_ROTATE_RENAME_FAILED;
+ }
+
+ 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_CHECK_ROTATION_PENDING_LOCAL:
+ {
+ int pending;
+ uint32_t pending_reply;
+
+ DBG("Perform local check of pending rotation for session id %" PRIu64,
+ msg.u.check_rotation_pending_local.session_id);
+ pending = lttng_consumer_check_rotation_pending_local(
+ msg.u.check_rotation_pending_local.session_id,
+ msg.u.check_rotation_pending_local.chunk_id);
+ if (pending < 0) {
+ ERR("Local rotation pending check failed with code %i", pending);
+ ret_code = LTTCOMM_CONSUMERD_ROTATION_PENDING_LOCAL_FAILED;
+ } else {
+ pending_reply = !!pending;
+ }
+
+ 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;
+ }
+
+ if (pending < 0) {
+ /*
+ * An error occurred while running the command;
+ * don't send the 'pending' flag as the sessiond
+ * will not read it.
+ */
+ break;
+ }
+
+ /* Send back returned value to session daemon */
+ ret = lttcomm_send_unix_sock(sock, &pending_reply,
+ sizeof(pending_reply));
+ if (ret < 0) {
+ PERROR("Failed to send rotation pending return code");
+ goto error_fatal;
+ }
+ break;
+ }
+ case LTTNG_CONSUMER_CHECK_ROTATION_PENDING_RELAY:
+ {
+ int pending;
+ uint32_t pending_reply;
+
+ DBG("Perform relayd check of pending rotation for session id %" PRIu64,
+ msg.u.check_rotation_pending_relay.session_id);
+ pending = lttng_consumer_check_rotation_pending_relay(
+ msg.u.check_rotation_pending_relay.session_id,
+ msg.u.check_rotation_pending_relay.relayd_id,
+ msg.u.check_rotation_pending_relay.chunk_id);
+ if (pending < 0) {
+ ERR("Relayd rotation pending check failed with code %i", pending);
+ ret_code = LTTCOMM_CONSUMERD_ROTATION_PENDING_RELAY_FAILED;
+ } else {
+ pending_reply = !!pending;
+ }
+
+ 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;
+ }
+
+ if (pending < 0) {
+ /*
+ * An error occurred while running the command;
+ * don't send the 'pending' flag as the sessiond
+ * will not read it.
+ */
+ break;
+ }
+
+ /* Send back returned value to session daemon */
+ ret = lttcomm_send_unix_sock(sock, &pending_reply,
+ sizeof(pending_reply));
+ if (ret < 0) {
+ PERROR("Failed to send rotation pending return code");
+ goto error_fatal;
+ }
+ break;
+ }
+ case LTTNG_CONSUMER_MKDIR:
+ {
+ DBG("Consumer mkdir %s in session %" PRIu64,
+ msg.u.mkdir.path,
+ msg.u.mkdir.session_id);
+ ret = lttng_consumer_mkdir(msg.u.mkdir.path,
+ msg.u.mkdir.uid,
+ msg.u.mkdir.gid,
+ msg.u.mkdir.relayd_id);
+ if (ret < 0) {
+ ERR("consumer mkdir failed");
+ ret_code = LTTCOMM_CONSUMERD_MKDIR_FAILED;
+ }
+
+ 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_INIT:
+ {
+ ret_code = lttng_consumer_init_command(ctx,
+ msg.u.init.sessiond_uuid);
+
+ 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;
+ }