+ ret = mi_lttng_writer_open_element(writer,
+ config_element_userspace_probe_function_attributes);
+ if (ret) {
+ goto end;
+ }
+
+ switch (lookup_type) {
+ case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_ELF:
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_userspace_probe_lookup,
+ config_element_userspace_probe_lookup_function_elf);
+ if (ret) {
+ goto end;
+ }
+ break;
+ case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_FUNCTION_DEFAULT:
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_userspace_probe_lookup,
+ config_element_userspace_probe_lookup_function_default);
+ if (ret) {
+ goto end;
+ }
+ break;
+ default:
+ goto end;
+ }
+
+ binary_path = lttng_userspace_probe_location_function_get_binary_path(location);
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_userspace_probe_location_binary_path, binary_path);
+ if (ret) {
+ goto end;
+ }
+
+ function_name = lttng_userspace_probe_location_function_get_function_name(location);
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_userspace_probe_function_location_function_name,
+ function_name);
+ if (ret) {
+ goto end;
+ }
+
+ break;
+ }
+ case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_TRACEPOINT:
+ {
+ const char *probe_name, *provider_name;
+ const char *binary_path;
+
+ ret = mi_lttng_writer_open_element(writer,
+ config_element_userspace_probe_function_attributes);
+ if (ret) {
+ goto end;
+ }
+
+ switch (lookup_type) {
+ case LTTNG_USERSPACE_PROBE_LOCATION_LOOKUP_METHOD_TYPE_TRACEPOINT_SDT:
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_userspace_probe_lookup,
+ config_element_userspace_probe_lookup_tracepoint_sdt);
+ if (ret) {
+ goto end;
+ }
+ break;
+ default:
+ goto end;
+ }
+
+ binary_path = lttng_userspace_probe_location_tracepoint_get_binary_path(location);
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_userspace_probe_location_binary_path,
+ binary_path);
+ if (ret) {
+ goto end;
+ }
+
+ provider_name = lttng_userspace_probe_location_tracepoint_get_provider_name(location);
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_userspace_probe_tracepoint_location_provider_name,
+ provider_name);
+ if (ret) {
+ goto end;
+ }
+
+ probe_name = lttng_userspace_probe_location_tracepoint_get_probe_name(location);
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_userspace_probe_tracepoint_location_probe_name, probe_name);
+ if (ret) {
+ goto end;
+ }
+ break;
+ }
+ default:
+ ERR("Invalid probe type encountered");
+ }
+ /* Close probe_attributes and attributes */
+ ret = mi_lttng_close_multi_element(writer, 2);
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+int mi_lttng_event_function_entry(struct mi_writer *writer,
+ struct lttng_event *event)
+{
+ int ret;
+
+ ret = mi_lttng_writer_open_element(writer, config_element_attributes);
+ if (ret) {
+ goto end;
+ }
+
+ ret = mi_lttng_writer_open_element(writer, config_element_probe_attributes);
+ if (ret) {
+ goto end;
+ }
+
+ /* event probe symbol_name */
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_symbol_name, event->attr.ftrace.symbol_name);
+ if (ret) {
+ goto end;
+ }
+
+ /* Close function_attributes and attributes */
+ ret = mi_lttng_close_multi_element(writer, 2);
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+int mi_lttng_events_open(struct mi_writer *writer)
+{
+ return mi_lttng_writer_open_element(writer, config_element_events);
+}
+
+LTTNG_HIDDEN
+int mi_lttng_event(struct mi_writer *writer,
+ struct lttng_event *event, int is_open, enum lttng_domain_type domain)
+{
+ int ret;
+
+ ret = mi_lttng_event_common_attributes(writer, event);
+ if (ret) {
+ goto end;
+ }
+
+ switch (event->type) {
+ case LTTNG_EVENT_TRACEPOINT:
+ {
+ if (event->loglevel != -1) {
+ ret = mi_lttng_event_tracepoint_loglevel(writer, event, domain);
+ } else {
+ ret = mi_lttng_event_tracepoint_no_loglevel(writer, event);
+ }
+ break;
+ }
+ case LTTNG_EVENT_FUNCTION:
+ /* Fallthrough */
+ case LTTNG_EVENT_PROBE:
+ ret = mi_lttng_event_function_probe(writer, event);
+ break;
+ case LTTNG_EVENT_FUNCTION_ENTRY:
+ ret = mi_lttng_event_function_entry(writer, event);
+ break;
+ case LTTNG_EVENT_USERSPACE_PROBE:
+ ret = mi_lttng_event_userspace_probe(writer, event);
+ break;
+ case LTTNG_EVENT_ALL:
+ /* Fallthrough */
+ default:
+ break;
+ }
+
+ if (ret) {
+ goto end;
+ }
+
+ if (!is_open) {
+ ret = mi_lttng_writer_close_element(writer);
+ }
+
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+int mi_lttng_trackers_open(struct mi_writer *writer)
+{
+ return mi_lttng_writer_open_element(writer, config_element_trackers);
+}
+
+static int get_tracker_elements(enum lttng_tracker_type tracker_type,
+ const char **element_id_tracker,
+ const char **element_target_id)
+{
+ int ret = 0;
+
+ switch (tracker_type) {
+ case LTTNG_TRACKER_PID:
+ *element_id_tracker = config_element_pid_tracker;
+ *element_target_id = config_element_target_pid;
+ break;
+ case LTTNG_TRACKER_VPID:
+ *element_id_tracker = config_element_vpid_tracker;
+ *element_target_id = config_element_target_vpid;
+ break;
+ case LTTNG_TRACKER_UID:
+ *element_id_tracker = config_element_uid_tracker;
+ *element_target_id = config_element_target_uid;
+ break;
+ case LTTNG_TRACKER_VUID:
+ *element_id_tracker = config_element_vuid_tracker;
+ *element_target_id = config_element_target_vuid;
+ break;
+ case LTTNG_TRACKER_GID:
+ *element_id_tracker = config_element_gid_tracker;
+ *element_target_id = config_element_target_gid;
+ break;
+ case LTTNG_TRACKER_VGID:
+ *element_id_tracker = config_element_vgid_tracker;
+ *element_target_id = config_element_target_vgid;
+ break;
+ default:
+ ret = LTTNG_ERR_SAVE_IO_FAIL;
+ }
+ return ret;
+}
+
+LTTNG_HIDDEN
+int mi_lttng_id_tracker_open(
+ struct mi_writer *writer, enum lttng_tracker_type tracker_type)
+{
+ int ret;
+ const char *element_id_tracker, *element_target_id;
+
+ ret = get_tracker_elements(
+ tracker_type, &element_id_tracker, &element_target_id);
+ if (ret) {
+ return ret;
+ }
+
+ /* Open element $id_tracker */
+ ret = mi_lttng_writer_open_element(writer, element_id_tracker);
+ if (ret) {
+ goto end;
+ }
+
+ /* Open targets element */
+ ret = mi_lttng_targets_open(writer);
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+int mi_lttng_pids_open(struct mi_writer *writer)
+{
+ return mi_lttng_writer_open_element(writer, config_element_pids);
+}
+
+/*
+ * TODO: move the listing of pid for user agent to process semantic on
+ * mi api bump. The use of process element break the mi api.
+ */
+LTTNG_HIDDEN
+int mi_lttng_pid(struct mi_writer *writer,
+ pid_t pid,
+ const char *name,
+ int is_open)
+{
+ int ret;
+
+ /* Open pid process */
+ ret = mi_lttng_writer_open_element(writer, config_element_pid);
+ if (ret) {
+ goto end;
+ }
+
+ /* Writing pid number */
+ ret = mi_lttng_writer_write_element_signed_int(writer,
+ mi_lttng_element_pid_id, (int)pid);
+ if (ret) {
+ goto end;
+ }
+
+ /* Writing name of the process */
+ if (name) {
+ ret = mi_lttng_writer_write_element_string(writer, config_element_name,
+ name);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ if (!is_open) {
+ /* Closing Pid */
+ ret = mi_lttng_writer_close_element(writer);
+ }
+
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+int mi_lttng_targets_open(struct mi_writer *writer)
+{
+ return mi_lttng_writer_open_element(writer,
+ config_element_targets);
+}
+
+LTTNG_HIDDEN
+int mi_lttng_id_target(struct mi_writer *writer,
+ enum lttng_tracker_type tracker_type,
+ const struct lttng_tracker_id *id,
+ int is_open)
+{
+ int ret;
+ const char *element_id_tracker, *element_target_id;
+ enum lttng_tracker_id_status status;
+ int value;
+ const char *string;
+
+ ret = get_tracker_elements(
+ tracker_type, &element_id_tracker, &element_target_id);
+ if (ret) {
+ return ret;
+ }
+
+ switch (lttng_tracker_id_get_type(id)) {
+ case LTTNG_ID_ALL:
+ ret = mi_lttng_writer_open_element(writer, element_target_id);
+ if (ret) {
+ goto end;
+ }
+ ret = mi_lttng_writer_open_element(writer, config_element_type);
+ if (ret) {
+ goto end;
+ }
+ ret = mi_lttng_writer_write_element_bool(
+ writer, config_element_all, 1);
+ if (ret) {
+ goto end;
+ }
+ ret = mi_lttng_writer_close_element(writer);
+ if (ret) {
+ goto end;
+ }
+ break;
+ case LTTNG_ID_VALUE:
+ ret = mi_lttng_writer_open_element(writer, element_target_id);
+ if (ret) {
+ goto end;
+ }
+ ret = mi_lttng_writer_open_element(writer, config_element_type);
+ if (ret) {
+ goto end;
+ }
+
+ status = lttng_tracker_id_get_value(id, &value);
+ if (status != LTTNG_TRACKER_ID_STATUS_OK) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = mi_lttng_writer_write_element_signed_int(
+ writer, config_element_id, value);
+ if (ret) {
+ goto end;
+ }
+ ret = mi_lttng_writer_close_element(writer);
+ if (ret) {
+ goto end;
+ }
+ break;
+ case LTTNG_ID_STRING:
+ ret = mi_lttng_writer_open_element(writer, element_target_id);
+ if (ret) {
+ goto end;
+ }
+ ret = mi_lttng_writer_open_element(writer, config_element_type);
+ if (ret) {
+ goto end;
+ }
+
+ status = lttng_tracker_id_get_string(id, &string);
+ if (status != LTTNG_TRACKER_ID_STATUS_OK) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = mi_lttng_writer_write_element_string(
+ writer, config_element_name, string);
+ if (ret) {
+ goto end;
+ }
+ ret = mi_lttng_writer_close_element(writer);
+ if (ret) {
+ goto end;
+ }
+ break;
+ case LTTNG_ID_UNKNOWN:
+ ret = -LTTNG_ERR_INVALID;
+ goto end;
+ }
+ if (ret) {
+ goto end;
+ }
+
+ if (!is_open) {
+ ret = mi_lttng_writer_close_element(writer);
+ if (ret) {
+ goto end;
+ }
+ }
+
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+int mi_lttng_event_fields_open(struct mi_writer *writer)
+{
+ return mi_lttng_writer_open_element(writer, mi_lttng_element_event_fields);
+}
+
+LTTNG_HIDDEN
+int mi_lttng_event_field(struct mi_writer *writer,
+ struct lttng_event_field *field)
+{
+ int ret;
+
+ if (!field->field_name[0]) {
+ ret = 0;
+ goto end;
+ }
+
+ /* Open field */
+ ret = mi_lttng_writer_open_element(writer, mi_lttng_element_event_field);
+ if (ret) {
+ goto end;
+ }
+
+ if (!field->field_name[0]) {
+ goto close;
+ }
+
+ /* Name */
+ ret = mi_lttng_writer_write_element_string(writer, config_element_name,
+ field->field_name);
+ if (ret) {
+ goto end;
+ }
+
+ /* Type */
+ ret = mi_lttng_writer_write_element_string(writer, config_element_type,
+ mi_lttng_eventfieldtype_string(field->type));
+ if (ret) {
+ goto end;
+ }
+
+ /* nowrite */
+ ret = mi_lttng_writer_write_element_signed_int(writer,
+ mi_lttng_element_nowrite, field->nowrite);
+ if (ret) {
+ goto end;
+ }
+
+close:
+ /* Close field element */
+ ret = mi_lttng_writer_close_element(writer);
+
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+int mi_lttng_perf_counter_context(struct mi_writer *writer,
+ struct lttng_event_perf_counter_ctx *perf_context)
+{
+ int ret;
+
+ /* Open perf_counter_context */
+ ret = mi_lttng_writer_open_element(writer,
+ mi_lttng_element_perf_counter_context);
+ if (ret) {
+ goto end;
+ }
+
+ /* Type */
+ ret = mi_lttng_writer_write_element_unsigned_int(writer,
+ config_element_type, perf_context->type);
+ if (ret) {
+ goto end;
+ }
+
+ /* Config */
+ ret = mi_lttng_writer_write_element_unsigned_int(writer,
+ config_element_config, perf_context->config);
+ if (ret) {
+ goto end;
+ }
+
+ /* Name of the perf counter */
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_name, perf_context->name);
+ if (ret) {
+ goto end;
+ }
+
+ /* Close perf_counter_context */
+ ret = mi_lttng_writer_close_element(writer);
+end:
+ return ret;
+}
+
+static
+int mi_lttng_app_context(struct mi_writer *writer,
+ const char *provider_name, const char *ctx_name)
+{
+ int ret;
+
+ /* Open app */
+ ret = mi_lttng_writer_open_element(writer,
+ config_element_context_app);
+ if (ret) {
+ goto end;
+ }
+
+ /* provider_name */
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_context_app_provider_name,
+ provider_name);
+ if (ret) {
+ goto end;
+ }
+
+ /* ctx_name */
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_context_app_ctx_name, ctx_name);
+ if (ret) {
+ goto end;
+ }
+
+ /* Close app */
+ ret = mi_lttng_writer_close_element(writer);
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+int mi_lttng_context(struct mi_writer *writer,
+ struct lttng_event_context *context, int is_open)
+{
+ int ret;
+
+ /* Open context */
+ ret = mi_lttng_writer_open_element(writer , config_element_context);
+ if (ret) {
+ goto end;
+ }
+
+ /* Special case for PERF_*_COUNTER
+ * print the lttng_event_perf_counter_ctx*/
+ switch (context->ctx) {
+ case LTTNG_EVENT_CONTEXT_PERF_COUNTER:
+ case LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER:
+ case LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER:
+ {
+ struct lttng_event_perf_counter_ctx *perf_context =
+ &context->u.perf_counter;
+ ret = mi_lttng_perf_counter_context(writer, perf_context);
+ if (ret) {
+ goto end;
+ }
+ break;
+ }
+ case LTTNG_EVENT_CONTEXT_APP_CONTEXT:
+ {
+ ret = mi_lttng_app_context(writer,
+ context->u.app_ctx.provider_name,
+ context->u.app_ctx.ctx_name);
+ if (ret) {
+ goto end;
+ }
+ break;
+ }
+ default:
+ {
+ const char *type_string = mi_lttng_event_contexttype_string(
+ context->ctx);
+ if (!type_string) {
+ ret = -LTTNG_ERR_INVALID;
+ goto end;
+ }
+
+ /* Print context type */
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_type, type_string);
+ break;
+ }
+ }
+
+ /* Close context */
+ if (!is_open) {
+ ret = mi_lttng_writer_close_element(writer);
+ }
+
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+int mi_lttng_snapshot_output_session_name(struct mi_writer *writer,
+ const char *session_name)
+{
+ int ret;
+
+ /* Open session element */
+ ret = mi_lttng_writer_open_element(writer, config_element_session);
+ if (ret) {
+ goto end;
+ }
+
+ /* Snapshot output list for current session name */
+ ret = mi_lttng_writer_write_element_string(writer, config_element_name,
+ session_name);
+ if (ret) {
+ goto end;
+ }
+
+ /* Open element snapshots (sequence one snapshot) */
+ ret = mi_lttng_writer_open_element(writer, mi_lttng_element_snapshots);
+ if (ret) {
+ goto end;
+ }
+
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+int mi_lttng_snapshot_list_output(struct mi_writer *writer,
+ struct lttng_snapshot_output *output)
+{
+ int ret;
+
+ /* Open element snapshot output */
+ ret = mi_lttng_writer_open_element(writer,
+ mi_lttng_element_command_snapshot);
+ if (ret) {
+ goto end;
+ }
+
+ /* ID of the snapshot output */
+ ret = mi_lttng_writer_write_element_unsigned_int(writer,
+ mi_lttng_element_id, output->id);
+ if (ret) {
+ goto end;
+ }
+
+ /* Name of the output */
+ ret = mi_lttng_writer_write_element_string(writer, config_element_name,
+ output->name);
+ if (ret) {
+ goto end;
+ }
+
+ /* Destination of the output (ctrl_url)*/
+ ret = mi_lttng_writer_write_element_string(writer,
+ mi_lttng_element_snapshot_ctrl_url, output->ctrl_url);
+ if (ret) {
+ goto end;
+ }
+
+ /* Destination of the output (data_url) */
+ ret = mi_lttng_writer_write_element_string(writer,
+ mi_lttng_element_snapshot_data_url, output->data_url);
+ if (ret) {
+ goto end;
+ }
+
+ /* total size of all stream combined */
+ ret = mi_lttng_writer_write_element_unsigned_int(writer,
+ mi_lttng_element_snapshot_max_size, output->max_size);
+ if (ret) {
+ goto end;
+ }
+
+ /* Close snapshot output element */
+ ret = mi_lttng_writer_close_element(writer);
+
+end:
+ return ret;
+}