+
+/*
+ * Ask the relay to reset the metadata trace file (regeneration).
+ */
+int relayd_reset_metadata(struct lttcomm_relayd_sock *rsock,
+ uint64_t stream_id, uint64_t version)
+{
+ int ret;
+ struct lttcomm_relayd_reset_metadata msg;
+ struct lttcomm_relayd_generic_reply reply;
+
+ /* Code flow error. Safety net. */
+ assert(rsock);
+
+ /* Should have been prevented by the sessiond. */
+ if (rsock->minor < 8) {
+ ERR("Metadata regeneration unsupported before 2.8");
+ ret = -1;
+ goto error;
+ }
+
+ DBG("Relayd reset metadata stream id %" PRIu64, stream_id);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.stream_id = htobe64(stream_id);
+ msg.version = htobe64(version);
+
+ /* Send command */
+ ret = send_command(rsock, RELAYD_RESET_METADATA, (void *) &msg, sizeof(msg), 0);
+ if (ret < 0) {
+ goto error;
+ }
+
+ /* Receive response */
+ ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
+ if (ret < 0) {
+ goto error;
+ }
+
+ reply.ret_code = be32toh(reply.ret_code);
+
+ /* Return session id or negative ret code. */
+ if (reply.ret_code != LTTNG_OK) {
+ ret = -1;
+ ERR("Relayd reset metadata replied error %d", reply.ret_code);
+ } else {
+ /* Success */
+ ret = 0;
+ }
+
+ DBG("Relayd reset metadata stream id %" PRIu64 " successfully", stream_id);
+
+error:
+ return ret;
+}
+
+int relayd_rotate_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id,
+ uint64_t new_chunk_id, uint64_t seq_num)
+{
+ int ret;
+ struct lttcomm_relayd_rotate_stream *msg = NULL;
+ struct lttcomm_relayd_generic_reply reply;
+ size_t len;
+ int msg_len;
+ /* FIXME */
+ char *new_pathname = NULL;
+
+ /* Code flow error. Safety net. */
+ assert(rsock);
+
+ DBG("Sending rotate stream id %" PRIu64 " command to relayd", stream_id);
+
+ /* Account for the trailing NULL. */
+ len = lttng_strnlen(new_pathname, LTTNG_PATH_MAX) + 1;
+ if (len > LTTNG_PATH_MAX) {
+ ERR("Path used in relayd rotate stream command exceeds the maximal allowed length");
+ ret = -1;
+ goto error;
+ }
+
+ msg_len = offsetof(struct lttcomm_relayd_rotate_stream, new_pathname) + len;
+ msg = zmalloc(msg_len);
+ if (!msg) {
+ PERROR("Failed to allocate relayd rotate stream command of %d bytes",
+ msg_len);
+ ret = -1;
+ goto error;
+ }
+
+ if (lttng_strncpy(msg->new_pathname, new_pathname, len)) {
+ ret = -1;
+ ERR("Failed to copy relayd rotate stream command's new path name");
+ goto error;
+ }
+
+ msg->pathname_length = htobe32(len);
+ msg->stream_id = htobe64(stream_id);
+ msg->new_chunk_id = htobe64(new_chunk_id);
+ /*
+ * The seq_num is invalid for metadata streams, but it is ignored on
+ * the relay.
+ */
+ msg->rotate_at_seq_num = htobe64(seq_num);
+
+ /* Send command. */
+ ret = send_command(rsock, RELAYD_ROTATE_STREAM, (void *) msg, msg_len, 0);
+ if (ret < 0) {
+ ERR("Send rotate command");
+ goto error;
+ }
+
+ /* Receive response. */
+ ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
+ if (ret < 0) {
+ ERR("Receive rotate reply");
+ goto error;
+ }
+
+ reply.ret_code = be32toh(reply.ret_code);
+
+ /* Return session id or negative ret code. */
+ if (reply.ret_code != LTTNG_OK) {
+ ret = -1;
+ ERR("Relayd rotate stream replied error %d", reply.ret_code);
+ } else {
+ /* Success. */
+ ret = 0;
+ DBG("Relayd rotated stream id %" PRIu64 " successfully", stream_id);
+ }
+
+error:
+ free(msg);
+ return ret;
+}
+
+int relayd_create_trace_chunk(struct lttcomm_relayd_sock *sock,
+ struct lttng_trace_chunk *chunk)
+{
+ int ret = 0;
+ enum lttng_trace_chunk_status status;
+ struct lttcomm_relayd_create_trace_chunk msg = {};
+ struct lttcomm_relayd_generic_reply reply = {};
+ struct lttng_dynamic_buffer payload;
+ uint64_t chunk_id;
+ time_t creation_timestamp;
+ const char *chunk_name;
+ size_t chunk_name_length;
+ bool overriden_name;
+
+ lttng_dynamic_buffer_init(&payload);
+
+ status = lttng_trace_chunk_get_id(chunk, &chunk_id);
+ if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ ret = -1;
+ goto end;
+ }
+
+ status = lttng_trace_chunk_get_creation_timestamp(
+ chunk, &creation_timestamp);
+ if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ ret = -1;
+ goto end;
+ }
+
+ status = lttng_trace_chunk_get_name(
+ chunk, &chunk_name, &overriden_name);
+ if (status != LTTNG_TRACE_CHUNK_STATUS_OK &&
+ status != LTTNG_TRACE_CHUNK_STATUS_NONE) {
+ ret = -1;
+ goto end;
+ }
+
+ chunk_name_length = overriden_name ? (strlen(chunk_name) + 1) : 0;
+ msg = (typeof(msg)){
+ .chunk_id = htobe64(chunk_id),
+ .creation_timestamp = htobe64((uint64_t) creation_timestamp),
+ .override_name_length = htobe32((uint32_t) chunk_name_length),
+ };
+
+ ret = lttng_dynamic_buffer_append(&payload, &msg, sizeof(msg));
+ if (ret) {
+ goto end;
+ }
+ if (chunk_name_length) {
+ ret = lttng_dynamic_buffer_append(
+ &payload, chunk_name, chunk_name_length);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ ret = send_command(sock, RELAYD_CREATE_TRACE_CHUNK, payload.data,
+ payload.size, 0);
+ if (ret < 0) {
+ ERR("Failed to send trace chunk creation command to relay daemon");
+ goto end;
+ }
+
+ ret = recv_reply(sock, &reply, sizeof(reply));
+ if (ret < 0) {
+ ERR("Failed to receive relay daemon trace chunk creation command reply");
+ goto end;
+ }
+
+ reply.ret_code = be32toh(reply.ret_code);
+ if (reply.ret_code != LTTNG_OK) {
+ ret = -1;
+ ERR("Relayd trace chunk create replied error %d",
+ reply.ret_code);
+ } else {
+ ret = 0;
+ DBG("Relayd successfully created trace chunk: chunk_id = %" PRIu64,
+ chunk_id);
+ }
+
+end:
+ lttng_dynamic_buffer_reset(&payload);
+ return ret;
+}
+
+int relayd_close_trace_chunk(struct lttcomm_relayd_sock *sock,
+ struct lttng_trace_chunk *chunk)
+{
+ int ret = 0;
+ enum lttng_trace_chunk_status status;
+ struct lttcomm_relayd_close_trace_chunk msg = {};
+ struct lttcomm_relayd_generic_reply reply = {};
+ uint64_t chunk_id;
+ time_t close_timestamp;
+ LTTNG_OPTIONAL(enum lttng_trace_chunk_command_type) close_command = {};
+
+ status = lttng_trace_chunk_get_id(chunk, &chunk_id);
+ if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ ERR("Failed to get trace chunk id");
+ ret = -1;
+ goto end;
+ }
+
+ status = lttng_trace_chunk_get_close_timestamp(chunk, &close_timestamp);
+ if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ ERR("Failed to get trace chunk close timestamp");
+ ret = -1;
+ goto end;
+ }
+
+ status = lttng_trace_chunk_get_close_command(chunk,
+ &close_command.value);
+ switch (status) {
+ case LTTNG_TRACE_CHUNK_STATUS_OK:
+ close_command.is_set = 1;
+ break;
+ case LTTNG_TRACE_CHUNK_STATUS_NONE:
+ break;
+ default:
+ ERR("Failed to get trace chunk close command");
+ ret = -1;
+ goto end;
+ }
+
+ msg = (typeof(msg)){
+ .chunk_id = htobe64(chunk_id),
+ .close_timestamp = htobe64((uint64_t) close_timestamp),
+ .close_command = {
+ .value = htobe32((uint32_t) close_command.value),
+ .is_set = close_command.is_set,
+ },
+ };
+
+ ret = send_command(sock, RELAYD_CLOSE_TRACE_CHUNK, &msg, sizeof(msg),
+ 0);
+ if (ret < 0) {
+ ERR("Failed to send trace chunk close command to relay daemon");
+ goto end;
+ }
+
+ ret = recv_reply(sock, &reply, sizeof(reply));
+ if (ret < 0) {
+ ERR("Failed to receive relay daemon trace chunk close command reply");
+ goto end;
+ }
+
+ reply.ret_code = be32toh(reply.ret_code);
+ if (reply.ret_code != LTTNG_OK) {
+ ret = -1;
+ ERR("Relayd trace chunk close replied error %d",
+ reply.ret_code);
+ } else {
+ ret = 0;
+ DBG("Relayd successfully closed trace chunk: chunk_id = %" PRIu64,
+ chunk_id);
+ }
+end:
+ return ret;
+}