+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;
+}
+
+LTTNG_HIDDEN
+int mi_lttng_snapshot_del_output(struct mi_writer *writer, int id,
+ const char *name, const char *current_session_name)
+{
+ int ret;
+
+ /* Open element del_snapshot */
+ ret = mi_lttng_writer_open_element(writer,
+ mi_lttng_element_command_snapshot);
+ if (ret) {
+ goto end;
+ }
+
+
+ if (id != UINT32_MAX) {
+ /* "Snapshot output "id" successfully deleted
+ * for "current_session_name"
+ * ID of the snapshot output
+ */
+ ret = mi_lttng_writer_write_element_unsigned_int(writer,
+ mi_lttng_element_id, id);
+ if (ret) {
+ goto end;
+ }
+ } else {
+ /* "Snapshot output "name" successfully deleted
+ * for session "current_session_name"
+ * Name of the output
+ */
+ ret = mi_lttng_writer_write_element_string(writer, config_element_name,
+ name);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ /* Snapshot was deleted for session "current_session_name"*/
+ ret = mi_lttng_writer_write_element_string(writer,
+ mi_lttng_element_snapshot_session_name,
+ current_session_name);
+ if (ret) {
+ goto end;
+ }
+
+ /* Close snapshot element */
+ ret = mi_lttng_writer_close_element(writer);
+
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+int mi_lttng_snapshot_add_output(struct mi_writer *writer,
+ const char *current_session_name, const char *n_ptr,
+ struct lttng_snapshot_output *output)