common: compile libcommon as C++
[lttng-tools.git] / src / common / mi-lttng.c
diff --git a/src/common/mi-lttng.c b/src/common/mi-lttng.c
deleted file mode 100644 (file)
index 1ff9f93..0000000
+++ /dev/null
@@ -1,2718 +0,0 @@
-/*
- * Copyright (C) 2014 Jonathan Rajotte <jonathan.r.julien@gmail.com>
- * Copyright (C) 2014 Olivier Cotte <olivier.cotte@polymtl.ca>
- * Copyright (C) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
- *
- * SPDX-License-Identifier: GPL-2.0-only
- *
- */
-
-#include "lttng/tracker.h"
-#define _LGPL_SOURCE
-#include "mi-lttng.h"
-#include <common/config/session-config.h>
-#include <common/defaults.h>
-#include <common/tracker.h>
-#include <lttng/channel.h>
-#include <lttng/snapshot-internal.h>
-
-
-#define MI_SCHEMA_MAJOR_VERSION 4
-#define MI_SCHEMA_MINOR_VERSION 1
-
-/* Machine interface namespace URI */
-const char * const mi_lttng_xmlns = "xmlns";
-const char * const mi_lttng_xmlns_xsi = "xmlns:xsi";
-const char * const mi_lttng_w3_schema_uri = "http://www.w3.org/2001/XMLSchema-instance";
-const char * const mi_lttng_schema_location = "xsi:schemaLocation";
-const char * const mi_lttng_schema_location_uri =
-       DEFAULT_LTTNG_MI_NAMESPACE " "
-       "https://lttng.org/xml/schemas/lttng-mi/" XSTR(MI_SCHEMA_MAJOR_VERSION)
-       "/lttng-mi-" XSTR(MI_SCHEMA_MAJOR_VERSION) "."
-       XSTR(MI_SCHEMA_MINOR_VERSION) ".xsd";
-const char * const mi_lttng_schema_version = "schemaVersion";
-const char * const mi_lttng_schema_version_value = XSTR(MI_SCHEMA_MAJOR_VERSION)
-       "." XSTR(MI_SCHEMA_MINOR_VERSION);
-
-/* Strings related to command */
-const char * const mi_lttng_element_command = "command";
-const char * const mi_lttng_element_command_action = "snapshot_action";
-const char * const mi_lttng_element_command_add_context = "add-context";
-const char *const mi_lttng_element_command_add_trigger = "add-trigger";
-const char * const mi_lttng_element_command_create = "create";
-const char * const mi_lttng_element_command_destroy = "destroy";
-const char * const mi_lttng_element_command_disable_channel = "disable-channel";
-const char * const mi_lttng_element_command_disable_event = "disable-event";
-const char * const mi_lttng_element_command_enable_channels = "enable-channel";
-const char * const mi_lttng_element_command_enable_event = "enable-event";
-const char * const mi_lttng_element_command_list = "list";
-const char *const mi_lttng_element_command_list_trigger = "list-trigger";
-const char * const mi_lttng_element_command_load = "load";
-const char * const mi_lttng_element_command_metadata = "metadata";
-const char * const mi_lttng_element_command_metadata_action = "metadata_action";
-const char * const mi_lttng_element_command_regenerate = "regenerate";
-const char * const mi_lttng_element_command_regenerate_action = "regenerate_action";
-const char * const mi_lttng_element_command_name = "name";
-const char * const mi_lttng_element_command_output = "output";
-const char *const mi_lttng_element_command_remove_trigger = "remove-trigger";
-const char * const mi_lttng_element_command_save = "save";
-const char * const mi_lttng_element_command_set_session = "set-session";
-const char * const mi_lttng_element_command_snapshot = "snapshot";
-const char * const mi_lttng_element_command_snapshot_add = "add_snapshot";
-const char * const mi_lttng_element_command_snapshot_del = "del_snapshot";
-const char * const mi_lttng_element_command_snapshot_list = "list_snapshot";
-const char * const mi_lttng_element_command_snapshot_record = "record_snapshot";
-const char * const mi_lttng_element_command_start = "start";
-const char * const mi_lttng_element_command_stop = "stop";
-const char * const mi_lttng_element_command_success = "success";
-const char * const mi_lttng_element_command_track = "track";
-const char * const mi_lttng_element_command_untrack = "untrack";
-const char * const mi_lttng_element_command_version = "version";
-const char * const mi_lttng_element_command_rotate = "rotate";
-const char * const mi_lttng_element_command_enable_rotation = "enable-rotation";
-const char * const mi_lttng_element_command_disable_rotation = "disable-rotation";
-const char * const mi_lttng_element_command_clear = "clear";
-
-/* Strings related to version command */
-const char * const mi_lttng_element_version = "version";
-const char * const mi_lttng_element_version_commit = "commit";
-const char * const mi_lttng_element_version_description = "description";
-const char * const mi_lttng_element_version_license = "license";
-const char * const mi_lttng_element_version_major = "major";
-const char * const mi_lttng_element_version_minor = "minor";
-const char * const mi_lttng_element_version_patch_level = "patchLevel";
-const char * const mi_lttng_element_version_str = "string";
-const char * const mi_lttng_element_version_web = "url";
-
-/* String related to a lttng_event_field */
-const char * const mi_lttng_element_event_field = "event_field";
-const char * const mi_lttng_element_event_fields = "event_fields";
-
-/* String related to lttng_event_perf_counter_ctx */
-const char * const mi_lttng_element_perf_counter_context = "perf";
-
-/* Strings related to pid */
-const char * const mi_lttng_element_pid_id = "id";
-
-/* Strings related to save command */
-const char * const mi_lttng_element_save = "save";
-
-/* Strings related to load command */
-const char * const mi_lttng_element_load = "load";
-const char * const mi_lttng_element_load_overrides = "overrides";
-const char * const mi_lttng_element_load_override_url = "url";
-
-/* General elements of mi_lttng */
-const char * const mi_lttng_element_empty = "";
-const char * const mi_lttng_element_id = "id";
-const char * const mi_lttng_element_nowrite = "nowrite";
-const char * const mi_lttng_element_success = "success";
-const char * const mi_lttng_element_type_enum = "ENUM";
-const char * const mi_lttng_element_type_float = "FLOAT";
-const char * const mi_lttng_element_type_integer = "INTEGER";
-const char * const mi_lttng_element_type_other = "OTHER";
-const char * const mi_lttng_element_type_string = "STRING";
-
-/* String related to loglevel */
-const char * const mi_lttng_loglevel_str_alert = "TRACE_ALERT";
-const char * const mi_lttng_loglevel_str_crit = "TRACE_CRIT";
-const char * const mi_lttng_loglevel_str_debug = "TRACE_DEBUG";
-const char * const mi_lttng_loglevel_str_debug_function = "TRACE_DEBUG_FUNCTION";
-const char * const mi_lttng_loglevel_str_debug_line = "TRACE_DEBUG_LINE";
-const char * const mi_lttng_loglevel_str_debug_module = "TRACE_DEBUG_MODULE";
-const char * const mi_lttng_loglevel_str_debug_process = "TRACE_DEBUG_PROCESS";
-const char * const mi_lttng_loglevel_str_debug_program = "TRACE_DEBUG_PROGRAM";
-const char * const mi_lttng_loglevel_str_debug_system = "TRACE_DEBUG_SYSTEM";
-const char * const mi_lttng_loglevel_str_debug_unit = "TRACE_DEBUG_UNIT";
-const char * const mi_lttng_loglevel_str_emerg = "TRACE_EMERG";
-const char * const mi_lttng_loglevel_str_err = "TRACE_ERR";
-const char * const mi_lttng_loglevel_str_info = "TRACE_INFO";
-const char * const mi_lttng_loglevel_str_notice = "TRACE_NOTICE";
-const char * const mi_lttng_loglevel_str_unknown = "UNKNOWN";
-const char * const mi_lttng_loglevel_str_warning = "TRACE_WARNING";
-
-/* String related to loglevel JUL */
-const char * const mi_lttng_loglevel_str_jul_all = "JUL_ALL";
-const char * const mi_lttng_loglevel_str_jul_config = "JUL_CONFIG";
-const char * const mi_lttng_loglevel_str_jul_fine = "JUL_FINE";
-const char * const mi_lttng_loglevel_str_jul_finer = "JUL_FINER";
-const char * const mi_lttng_loglevel_str_jul_finest = "JUL_FINEST";
-const char * const mi_lttng_loglevel_str_jul_info = "JUL_INFO";
-const char * const mi_lttng_loglevel_str_jul_off = "JUL_OFF";
-const char * const mi_lttng_loglevel_str_jul_severe = "JUL_SEVERE";
-const char * const mi_lttng_loglevel_str_jul_warning = "JUL_WARNING";
-
-/* String related to loglevel LOG4J */
-const char * const mi_lttng_loglevel_str_log4j_off = "LOG4J_OFF";
-const char * const mi_lttng_loglevel_str_log4j_fatal = "LOG4J_FATAL";
-const char * const mi_lttng_loglevel_str_log4j_error = "LOG4J_ERROR";
-const char * const mi_lttng_loglevel_str_log4j_warn = "LOG4J_WARN";
-const char * const mi_lttng_loglevel_str_log4j_info = "LOG4J_INFO";
-const char * const mi_lttng_loglevel_str_log4j_debug = "LOG4J_DEBUG";
-const char * const mi_lttng_loglevel_str_log4j_trace = "LOG4J_TRACE";
-const char * const mi_lttng_loglevel_str_log4j_all = "LOG4J_ALL";
-
-/* String related to loglevel Python */
-const char * const mi_lttng_loglevel_str_python_critical = "PYTHON_CRITICAL";
-const char * const mi_lttng_loglevel_str_python_error = "PYTHON_ERROR";
-const char * const mi_lttng_loglevel_str_python_warning = "PYTHON_WARNING";
-const char * const mi_lttng_loglevel_str_python_info = "PYTHON_INFO";
-const char * const mi_lttng_loglevel_str_python_debug = "PYTHON_DEBUG";
-const char * const mi_lttng_loglevel_str_python_notset = "PYTHON_NOTSET";
-
-/* String related to loglevel type */
-const char * const mi_lttng_loglevel_type_all = "ALL";
-const char * const mi_lttng_loglevel_type_range = "RANGE";
-const char * const mi_lttng_loglevel_type_single = "SINGLE";
-const char * const mi_lttng_loglevel_type_unknown = "UNKNOWN";
-
-/* String related to a lttng_snapshot_output */
-const char * const mi_lttng_element_snapshot_ctrl_url = "ctrl_url";
-const char * const mi_lttng_element_snapshot_data_url = "data_url";
-const char * const mi_lttng_element_snapshot_max_size = "max_size";
-const char * const mi_lttng_element_snapshot_n_ptr = "n_ptr";
-const char * const mi_lttng_element_snapshot_session_name = "session_name";
-const char * const mi_lttng_element_snapshots = "snapshots";
-
-/* String related to track/untrack command */
-const char * const mi_lttng_element_track_untrack_all_wildcard = "*";
-
-const char * const mi_lttng_element_session_name = "session_name";
-
-/* String related to rotate command */
-const char * const mi_lttng_element_rotation = "rotation";
-const char * const mi_lttng_element_rotate_status = "status";
-const char * const mi_lttng_element_rotation_schedule = "rotation_schedule";
-const char * const mi_lttng_element_rotation_schedules = "rotation_schedules";
-const char * const mi_lttng_element_rotation_schedule_result = "rotation_schedule_result";
-const char * const mi_lttng_element_rotation_schedule_results = "rotation_schedule_results";
-const char * const mi_lttng_element_rotation_schedule_periodic = "periodic";
-const char * const mi_lttng_element_rotation_schedule_periodic_time_us = "time_us";
-const char * const mi_lttng_element_rotation_schedule_size_threshold = "size_threshold";
-const char * const mi_lttng_element_rotation_schedule_size_threshold_bytes = "bytes";
-const char * const mi_lttng_element_rotation_state = "state";
-const char * const mi_lttng_element_rotation_location = "location";
-const char * const mi_lttng_element_rotation_location_local = "local";
-const char * const mi_lttng_element_rotation_location_local_absolute_path = "absolute_path";
-const char * const mi_lttng_element_rotation_location_relay = "relay";
-const char * const mi_lttng_element_rotation_location_relay_host = "host";
-const char * const mi_lttng_element_rotation_location_relay_control_port = "control_port";
-const char * const mi_lttng_element_rotation_location_relay_data_port = "data_port";
-const char * const mi_lttng_element_rotation_location_relay_protocol = "protocol";
-const char * const mi_lttng_element_rotation_location_relay_relative_path = "relative_path";
-
-/* String related to enum lttng_rotation_state */
-const char * const mi_lttng_rotation_state_str_ongoing = "ONGOING";
-const char * const mi_lttng_rotation_state_str_completed = "COMPLETED";
-const char * const mi_lttng_rotation_state_str_expired = "EXPIRED";
-const char * const mi_lttng_rotation_state_str_error = "ERROR";
-
-/* String related to enum lttng_trace_archive_location_relay_protocol_type */
-const char * const mi_lttng_rotation_location_relay_protocol_str_tcp = "TCP";
-
-/* String related to rate_policy elements */
-const char *const mi_lttng_element_rate_policy = "rate_policy";
-const char *const mi_lttng_element_rate_policy_every_n =
-               "rate_policy_every_n";
-const char *const mi_lttng_element_rate_policy_once_after_n =
-               "rate_policy_once_after_n";
-
-const char *const mi_lttng_element_rate_policy_every_n_interval =
-               "interval";
-const char
-               *const mi_lttng_element_rate_policy_once_after_n_threshold =
-                               "threshold";
-
-/* String related to action elements */
-const char *const mi_lttng_element_action = "action";
-const char *const mi_lttng_element_action_list = "action_list";
-const char *const mi_lttng_element_action_notify = "action_notify";
-const char *const mi_lttng_element_action_start_session =
-               "action_start_session";
-const char *const mi_lttng_element_action_stop_session =
-               "action_stop_session";
-const char *const mi_lttng_element_action_rotate_session =
-               "action_rotate_session";
-const char *const mi_lttng_element_action_snapshot_session =
-               "action_snapshot_session";
-const char *const mi_lttng_element_action_snapshot_session_output =
-               "output";
-
-/* String related to condition */
-const char *const mi_lttng_element_condition = "condition";
-const char *const mi_lttng_element_condition_buffer_usage_high =
-               "condition_buffer_usage_high";
-const char *const mi_lttng_element_condition_buffer_usage_low =
-               "condition_buffer_usage_low";
-const char *const mi_lttng_element_condition_event_rule_matches =
-               "condition_event_rule_matches";
-const char *const mi_lttng_element_condition_session_consumed_size =
-               "condition_session_consumed_size";
-const char *const mi_lttng_element_condition_session_rotation =
-               "condition_session_rotation";
-const char
-               *const mi_lttng_element_condition_session_rotation_completed =
-                               "condition_session_rotation_completed";
-const char
-               *const mi_lttng_element_condition_session_rotation_ongoing =
-                               "condition_session_rotation_ongoing";
-
-const char *const mi_lttng_element_condition_channel_name =
-               "channel_name";
-const char *const mi_lttng_element_condition_threshold_bytes =
-               "threshold_bytes";
-const char *const mi_lttng_element_condition_threshold_ratio =
-               "threshold_ratio";
-
-/* String related to capture descriptor */
-const char *const mi_lttng_element_capture_descriptor =
-               "capture_descriptor";
-const char *const mi_lttng_element_capture_descriptors =
-               "capture_descriptors";
-
-/* String related to event expression */
-const char *const mi_lttng_element_event_expr = "event_expr";
-const char *const mi_lttng_element_event_expr_payload_field =
-               "event_expr_payload_field";
-const char *const mi_lttng_element_event_expr_channel_context_field =
-               "event_expr_channel_context_field";
-const char
-               *const mi_lttng_element_event_expr_app_specific_context_field =
-                               "event_expr_app_specific_context_field";
-const char *const mi_lttng_element_event_expr_array_field_element =
-               "event_expr_array_field_element";
-const char *const mi_lttng_element_event_expr_provider_name =
-               "provider_name";
-const char *const mi_lttng_element_event_expr_type_name =
-               "type_name";
-const char *const mi_lttng_element_event_expr_index = "index";
-
-/* String related to event rule */
-const char *const mi_lttng_element_event_rule = "event_rule";
-
-/* String related to lttng_event_rule_type */
-const char *const mi_lttng_element_event_rule_event_name =
-               "event_name";
-const char *const mi_lttng_element_event_rule_name_pattern =
-               "name_pattern";
-const char *const mi_lttng_element_event_rule_filter_expression =
-               "filter_expression";
-
-const char *const mi_lttng_element_event_rule_jul_logging =
-               "event_rule_jul_logging";
-const char *const mi_lttng_element_event_rule_kernel_kprobe =
-               "event_rule_kernel_kprobe";
-const char *const mi_lttng_element_event_rule_kernel_syscall =
-               "event_rule_kernel_syscall";
-const char *const mi_lttng_element_event_rule_kernel_tracepoint =
-               "event_rule_kernel_tracepoint";
-const char *const mi_lttng_element_event_rule_kernel_uprobe =
-               "event_rule_kernel_uprobe";
-const char *const mi_lttng_element_event_rule_log4j_logging =
-               "event_rule_log4j_logging";
-const char *const mi_lttng_element_event_rule_python_logging =
-               "event_rule_python_logging";
-const char *const mi_lttng_element_event_rule_user_tracepoint =
-               "event_rule_user_tracepoint";
-
-/* String related to lttng_event_rule_kernel_syscall. */
-const char *const
-               mi_lttng_element_event_rule_kernel_syscall_emission_site =
-                               "emission_site";
-
-/* String related to enum lttng_event_rule_kernel_syscall_emission_site. */
-const char *const
-               mi_lttng_event_rule_kernel_syscall_emission_site_entry_exit =
-                               "entry+exit";
-const char
-               *const mi_lttng_event_rule_kernel_syscall_emission_site_entry =
-                               "entry";
-const char *const
-               mi_lttng_event_rule_kernel_syscall_emission_site_exit = "exit";
-
-/* String related to lttng_event_rule_user_tracepoint */
-const char *const
-               mi_lttng_element_event_rule_user_tracepoint_name_pattern_exclusions =
-                               "name_pattern_exclusions";
-const char *const
-               mi_lttng_element_event_rule_user_tracepoint_name_pattern_exclusion =
-                               "name_pattern_exclusion";
-
-/* String related to log level rule. */
-const char *const mi_lttng_element_log_level_rule =
-               "log_level_rule";
-const char *const mi_lttng_element_log_level_rule_exactly =
-               "log_level_rule_exactly";
-const char
-               *const mi_lttng_element_log_level_rule_at_least_as_severe_as =
-                               "log_level_rule_at_least_as_severe_as";
-const char *const mi_lttng_element_log_level_rule_level = "level";
-
-/* String related to kernel probe location. */
-const char *const mi_lttng_element_kernel_probe_location =
-               "kernel_probe_location";
-const char
-               *const mi_lttng_element_kernel_probe_location_symbol_offset =
-                               "kernel_probe_location_symbol_offset";
-const char *const
-               mi_lttng_element_kernel_probe_location_symbol_offset_name =
-                               "name";
-const char *const
-               mi_lttng_element_kernel_probe_location_symbol_offset_offset =
-                               "offset";
-
-const char *const mi_lttng_element_kernel_probe_location_address =
-               "kernel_probe_location_address";
-const char
-               *const mi_lttng_element_kernel_probe_location_address_address =
-                               "address";
-
-/* String related to userspace probe location. */
-const char *const mi_lttng_element_userspace_probe_location =
-               "userspace_probe_location";
-const char
-               *const mi_lttng_element_userspace_probe_location_binary_path =
-                               "binary_path";
-const char
-               *const mi_lttng_element_userspace_probe_location_function =
-                               "userspace_probe_location_function";
-const char
-               *const mi_lttng_element_userspace_probe_location_function_name =
-                               "name";
-const char
-               *const mi_lttng_element_userspace_probe_location_lookup_method =
-                               "userspace_probe_location_lookup_method";
-const char *const
-               mi_lttng_element_userspace_probe_location_lookup_method_function_default =
-                               "userspace_probe_location_lookup_method_function_default";
-const char *const
-               mi_lttng_element_userspace_probe_location_lookup_method_function_elf =
-                               "userspace_probe_location_lookup_method_function_elf";
-const char *const
-               mi_lttng_element_userspace_probe_location_lookup_method_tracepoint_sdt =
-                               "userspace_probe_location_lookup_method_tracepoint_sdt";
-const char
-               *const mi_lttng_element_userspace_probe_location_tracepoint =
-                               "userspace_probe_location_tracepoint";
-const char *const
-               mi_lttng_element_userspace_probe_location_tracepoint_probe_name =
-                               "probe_name";
-const char *const
-               mi_lttng_element_userspace_probe_location_tracepoint_provider_name =
-                               "provider_name";
-
-/* String related to enum
- * lttng_userspace_probe_location_function_instrumentation_type */
-const char *const
-               mi_lttng_element_userspace_probe_location_function_instrumentation_type =
-                               "instrumentation_type";
-const char *const
-               mi_lttng_userspace_probe_location_function_instrumentation_type_entry =
-                               "ENTRY";
-
-/* String related to trigger */
-const char *const mi_lttng_element_triggers = "triggers";
-const char *const mi_lttng_element_trigger = "trigger";
-const char *const mi_lttng_element_trigger_owner_uid = "owner_uid";
-
-/* String related to error_query. */
-const char *const mi_lttng_element_error_query_result =
-               "error_query_result";
-const char *const mi_lttng_element_error_query_result_counter =
-               "error_query_result_counter";
-const char *const
-               mi_lttng_element_error_query_result_counter_value = "value";
-const char *const mi_lttng_element_error_query_result_description =
-               "description";
-const char *const mi_lttng_element_error_query_result_name =
-               "name";
-const char *const mi_lttng_element_error_query_result_type =
-               "type";
-const char *const mi_lttng_element_error_query_results =
-               "error_query_results";
-
-/* String related to add-context command */
-const char * const mi_lttng_element_context_symbol = "symbol";
-
-/* Deprecated symbols preserved for ABI compatibility. */
-LTTNG_EXPORT const char * const mi_lttng_context_type_perf_counter;
-LTTNG_EXPORT const char * const mi_lttng_context_type_perf_cpu_counter;
-LTTNG_EXPORT const char * const mi_lttng_context_type_perf_thread_counter;
-LTTNG_EXPORT const char * const mi_lttng_element_track_untrack_pid_target;
-LTTNG_EXPORT const char * const mi_lttng_element_track_untrack_targets;
-LTTNG_EXPORT const char * const mi_lttng_element_calibrate;
-LTTNG_EXPORT const char * const mi_lttng_element_calibrate_function;
-LTTNG_EXPORT const char * const mi_lttng_element_command_calibrate;
-
-/* This is a merge of jul loglevel and regular loglevel
- * Those should never overlap by definition
- * (see struct lttng_event loglevel)
- */
-const char *mi_lttng_loglevel_string(int value, enum lttng_domain_type domain)
-{
-       switch (domain) {
-       case LTTNG_DOMAIN_KERNEL:
-       case LTTNG_DOMAIN_UST:
-               switch (value) {
-               case -1:
-                       return mi_lttng_element_empty;
-               case LTTNG_LOGLEVEL_EMERG:
-                       return mi_lttng_loglevel_str_emerg;
-               case LTTNG_LOGLEVEL_ALERT:
-                       return mi_lttng_loglevel_str_alert;
-               case LTTNG_LOGLEVEL_CRIT:
-                       return mi_lttng_loglevel_str_crit;
-               case LTTNG_LOGLEVEL_ERR:
-                       return mi_lttng_loglevel_str_err;
-               case LTTNG_LOGLEVEL_WARNING:
-                       return mi_lttng_loglevel_str_warning;
-               case LTTNG_LOGLEVEL_NOTICE:
-                       return mi_lttng_loglevel_str_notice;
-               case LTTNG_LOGLEVEL_INFO:
-                       return mi_lttng_loglevel_str_info;
-               case LTTNG_LOGLEVEL_DEBUG_SYSTEM:
-                       return mi_lttng_loglevel_str_debug_system;
-               case LTTNG_LOGLEVEL_DEBUG_PROGRAM:
-                       return mi_lttng_loglevel_str_debug_program;
-               case LTTNG_LOGLEVEL_DEBUG_PROCESS:
-                       return mi_lttng_loglevel_str_debug_process;
-               case LTTNG_LOGLEVEL_DEBUG_MODULE:
-                       return mi_lttng_loglevel_str_debug_module;
-               case LTTNG_LOGLEVEL_DEBUG_UNIT:
-                       return mi_lttng_loglevel_str_debug_unit;
-               case LTTNG_LOGLEVEL_DEBUG_FUNCTION:
-                       return mi_lttng_loglevel_str_debug_function;
-               case LTTNG_LOGLEVEL_DEBUG_LINE:
-                       return mi_lttng_loglevel_str_debug_line;
-               case LTTNG_LOGLEVEL_DEBUG:
-                       return mi_lttng_loglevel_str_debug;
-               default:
-                       return mi_lttng_loglevel_str_unknown;
-               }
-               break;
-       case LTTNG_DOMAIN_LOG4J:
-               switch (value) {
-               case -1:
-                       return mi_lttng_element_empty;
-               case LTTNG_LOGLEVEL_LOG4J_OFF:
-                       return mi_lttng_loglevel_str_log4j_off;
-               case LTTNG_LOGLEVEL_LOG4J_FATAL:
-                       return mi_lttng_loglevel_str_log4j_fatal;
-               case LTTNG_LOGLEVEL_LOG4J_ERROR:
-                       return mi_lttng_loglevel_str_log4j_error;
-               case LTTNG_LOGLEVEL_LOG4J_WARN:
-                       return mi_lttng_loglevel_str_log4j_warn;
-               case LTTNG_LOGLEVEL_LOG4J_INFO:
-                       return mi_lttng_loglevel_str_log4j_info;
-               case LTTNG_LOGLEVEL_LOG4J_DEBUG:
-                       return mi_lttng_loglevel_str_log4j_debug;
-               case LTTNG_LOGLEVEL_LOG4J_TRACE:
-                       return mi_lttng_loglevel_str_log4j_trace;
-               case LTTNG_LOGLEVEL_LOG4J_ALL:
-                       return mi_lttng_loglevel_str_log4j_all;
-               default:
-                       return mi_lttng_loglevel_str_unknown;
-               }
-               break;
-       case LTTNG_DOMAIN_JUL:
-               switch (value) {
-               case -1:
-                       return mi_lttng_element_empty;
-               case LTTNG_LOGLEVEL_JUL_OFF:
-                       return mi_lttng_loglevel_str_jul_off;
-               case LTTNG_LOGLEVEL_JUL_SEVERE:
-                       return mi_lttng_loglevel_str_jul_severe;
-               case LTTNG_LOGLEVEL_JUL_WARNING:
-                       return mi_lttng_loglevel_str_jul_warning;
-               case LTTNG_LOGLEVEL_JUL_INFO:
-                       return mi_lttng_loglevel_str_jul_info;
-               case LTTNG_LOGLEVEL_JUL_CONFIG:
-                       return mi_lttng_loglevel_str_jul_config;
-               case LTTNG_LOGLEVEL_JUL_FINE:
-                       return mi_lttng_loglevel_str_jul_fine;
-               case LTTNG_LOGLEVEL_JUL_FINER:
-                       return mi_lttng_loglevel_str_jul_finer;
-               case LTTNG_LOGLEVEL_JUL_FINEST:
-                       return mi_lttng_loglevel_str_jul_finest;
-               case LTTNG_LOGLEVEL_JUL_ALL:
-                       return mi_lttng_loglevel_str_jul_all;
-               default:
-                       return mi_lttng_loglevel_str_unknown;
-               }
-               break;
-       case LTTNG_DOMAIN_PYTHON:
-               switch (value) {
-               case LTTNG_LOGLEVEL_PYTHON_CRITICAL:
-                       return mi_lttng_loglevel_str_python_critical;
-               case LTTNG_LOGLEVEL_PYTHON_ERROR:
-                       return mi_lttng_loglevel_str_python_error;
-               case LTTNG_LOGLEVEL_PYTHON_WARNING:
-                       return mi_lttng_loglevel_str_python_warning;
-               case LTTNG_LOGLEVEL_PYTHON_INFO:
-                       return mi_lttng_loglevel_str_python_info;
-               case LTTNG_LOGLEVEL_PYTHON_DEBUG:
-                       return mi_lttng_loglevel_str_python_debug;
-               case LTTNG_LOGLEVEL_PYTHON_NOTSET:
-                       return mi_lttng_loglevel_str_python_notset;
-               default:
-                       return mi_lttng_loglevel_str_unknown;
-               }
-               break;
-       default:
-               return mi_lttng_loglevel_str_unknown;
-       }
-}
-
-const char *mi_lttng_logleveltype_string(enum lttng_loglevel_type value)
-{
-       switch (value) {
-       case LTTNG_EVENT_LOGLEVEL_ALL:
-               return mi_lttng_loglevel_type_all;
-       case LTTNG_EVENT_LOGLEVEL_RANGE:
-               return mi_lttng_loglevel_type_range;
-       case LTTNG_EVENT_LOGLEVEL_SINGLE:
-               return mi_lttng_loglevel_type_single;
-       default:
-               return mi_lttng_loglevel_type_unknown;
-       }
-}
-
-static
-const char *mi_lttng_eventtype_string(enum lttng_event_type value)
-{
-       switch (value) {
-       case LTTNG_EVENT_ALL:
-               return config_event_type_all;
-       case LTTNG_EVENT_TRACEPOINT:
-               return config_event_type_tracepoint;
-       case LTTNG_EVENT_PROBE:
-               return config_event_type_probe;
-       case LTTNG_EVENT_USERSPACE_PROBE:
-               return config_event_type_userspace_probe;
-       case LTTNG_EVENT_FUNCTION:
-               return config_event_type_function;
-       case LTTNG_EVENT_FUNCTION_ENTRY:
-               return config_event_type_function_entry;
-       case LTTNG_EVENT_SYSCALL:
-               return config_event_type_syscall;
-       case LTTNG_EVENT_NOOP:
-               return config_event_type_noop;
-       default:
-               return mi_lttng_element_empty;
-       }
-}
-
-static
-const char *mi_lttng_event_contexttype_string(enum lttng_event_context_type val)
-{
-       switch (val) {
-       case LTTNG_EVENT_CONTEXT_PID:
-               return config_event_context_pid;
-       case LTTNG_EVENT_CONTEXT_PROCNAME:
-               return config_event_context_procname;
-       case LTTNG_EVENT_CONTEXT_PRIO:
-               return config_event_context_prio;
-       case LTTNG_EVENT_CONTEXT_NICE:
-               return config_event_context_nice;
-       case LTTNG_EVENT_CONTEXT_VPID:
-               return config_event_context_vpid;
-       case LTTNG_EVENT_CONTEXT_TID:
-               return config_event_context_tid;
-       case LTTNG_EVENT_CONTEXT_VTID:
-               return config_event_context_vtid;
-       case LTTNG_EVENT_CONTEXT_PPID:
-               return config_event_context_ppid;
-       case LTTNG_EVENT_CONTEXT_VPPID:
-               return config_event_context_vppid;
-       case LTTNG_EVENT_CONTEXT_PTHREAD_ID:
-               return config_event_context_pthread_id;
-       case LTTNG_EVENT_CONTEXT_HOSTNAME:
-               return config_event_context_hostname;
-       case LTTNG_EVENT_CONTEXT_IP:
-               return config_event_context_ip;
-       case LTTNG_EVENT_CONTEXT_INTERRUPTIBLE:
-               return config_event_context_interruptible;
-       case LTTNG_EVENT_CONTEXT_PREEMPTIBLE:
-               return config_event_context_preemptible;
-       case LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE:
-               return config_event_context_need_reschedule;
-       case LTTNG_EVENT_CONTEXT_MIGRATABLE:
-               return config_event_context_migratable;
-       case LTTNG_EVENT_CONTEXT_CALLSTACK_USER:
-               return config_event_context_callstack_user;
-       case LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL:
-               return config_event_context_callstack_kernel;
-       case LTTNG_EVENT_CONTEXT_CGROUP_NS:
-               return config_event_context_cgroup_ns;
-       case LTTNG_EVENT_CONTEXT_IPC_NS:
-               return config_event_context_ipc_ns;
-       case LTTNG_EVENT_CONTEXT_MNT_NS:
-               return config_event_context_mnt_ns;
-       case LTTNG_EVENT_CONTEXT_NET_NS:
-               return config_event_context_net_ns;
-       case LTTNG_EVENT_CONTEXT_PID_NS:
-               return config_event_context_pid_ns;
-       case LTTNG_EVENT_CONTEXT_TIME_NS:
-               return config_event_context_time_ns;
-       case LTTNG_EVENT_CONTEXT_USER_NS:
-               return config_event_context_user_ns;
-       case LTTNG_EVENT_CONTEXT_UTS_NS:
-               return config_event_context_uts_ns;
-       case LTTNG_EVENT_CONTEXT_UID:
-               return config_event_context_uid;
-       case LTTNG_EVENT_CONTEXT_EUID:
-               return config_event_context_euid;
-       case LTTNG_EVENT_CONTEXT_SUID:
-               return config_event_context_suid;
-       case LTTNG_EVENT_CONTEXT_GID:
-               return config_event_context_gid;
-       case LTTNG_EVENT_CONTEXT_EGID:
-               return config_event_context_egid;
-       case LTTNG_EVENT_CONTEXT_SGID:
-               return config_event_context_sgid;
-       case LTTNG_EVENT_CONTEXT_VUID:
-               return config_event_context_vuid;
-       case LTTNG_EVENT_CONTEXT_VEUID:
-               return config_event_context_veuid;
-       case LTTNG_EVENT_CONTEXT_VSUID:
-               return config_event_context_vsuid;
-       case LTTNG_EVENT_CONTEXT_VGID:
-               return config_event_context_vgid;
-       case LTTNG_EVENT_CONTEXT_VEGID:
-               return config_event_context_vegid;
-       case LTTNG_EVENT_CONTEXT_VSGID:
-               return config_event_context_vsgid;
-       default:
-               return NULL;
-       }
-}
-
-const char *mi_lttng_eventfieldtype_string(enum lttng_event_field_type val)
-{
-       switch (val) {
-       case(LTTNG_EVENT_FIELD_INTEGER):
-               return mi_lttng_element_type_integer;
-       case(LTTNG_EVENT_FIELD_ENUM):
-               return mi_lttng_element_type_enum;
-       case(LTTNG_EVENT_FIELD_FLOAT):
-               return mi_lttng_element_type_float;
-       case(LTTNG_EVENT_FIELD_STRING):
-               return mi_lttng_element_type_string;
-       default:
-               return mi_lttng_element_type_other;
-       }
-}
-
-const char *mi_lttng_domaintype_string(enum lttng_domain_type value)
-{
-       switch (value) {
-       case LTTNG_DOMAIN_KERNEL:
-               return config_domain_type_kernel;
-       case LTTNG_DOMAIN_UST:
-               return config_domain_type_ust;
-       case LTTNG_DOMAIN_JUL:
-               return config_domain_type_jul;
-       case LTTNG_DOMAIN_LOG4J:
-               return config_domain_type_log4j;
-       case LTTNG_DOMAIN_PYTHON:
-               return config_domain_type_python;
-       default:
-               /* Should not have an unknown domain */
-               abort();
-               return NULL;
-       }
-}
-
-const char *mi_lttng_buffertype_string(enum lttng_buffer_type value)
-{
-       switch (value) {
-       case LTTNG_BUFFER_PER_PID:
-               return config_buffer_type_per_pid;
-       case LTTNG_BUFFER_PER_UID:
-               return config_buffer_type_per_uid;
-       case LTTNG_BUFFER_GLOBAL:
-               return config_buffer_type_global;
-       default:
-               /* Should not have an unknow buffer type */
-               abort();
-               return NULL;
-       }
-}
-
-const char *mi_lttng_rotation_state_string(enum lttng_rotation_state value)
-{
-       switch (value) {
-       case LTTNG_ROTATION_STATE_ONGOING:
-               return mi_lttng_rotation_state_str_ongoing;
-       case LTTNG_ROTATION_STATE_COMPLETED:
-               return mi_lttng_rotation_state_str_completed;
-       case LTTNG_ROTATION_STATE_EXPIRED:
-               return mi_lttng_rotation_state_str_expired;
-       case LTTNG_ROTATION_STATE_ERROR:
-               return mi_lttng_rotation_state_str_error;
-       default:
-               /* Should not have an unknow rotation state. */
-               abort();
-               return NULL;
-       }
-}
-
-const char *mi_lttng_trace_archive_location_relay_protocol_type_string(
-               enum lttng_trace_archive_location_relay_protocol_type value)
-{
-       switch (value) {
-       case LTTNG_TRACE_ARCHIVE_LOCATION_RELAY_PROTOCOL_TYPE_TCP:
-               return mi_lttng_rotation_location_relay_protocol_str_tcp;
-       default:
-               /* Should not have an unknown relay protocol. */
-               abort();
-               return NULL;
-       }
-}
-
-struct mi_writer *mi_lttng_writer_create(int fd_output, int mi_output_type)
-{
-       struct mi_writer *mi_writer;
-
-       mi_writer = zmalloc(sizeof(struct mi_writer));
-       if (!mi_writer) {
-               PERROR("zmalloc mi_writer_create");
-               goto end;
-       }
-       if (mi_output_type == LTTNG_MI_XML) {
-               mi_writer->writer = config_writer_create(fd_output, 0);
-               if (!mi_writer->writer) {
-                       goto err_destroy;
-               }
-               mi_writer->type = LTTNG_MI_XML;
-       } else {
-               goto err_destroy;
-       }
-
-end:
-       return mi_writer;
-
-err_destroy:
-       free(mi_writer);
-       return NULL;
-}
-
-int mi_lttng_writer_destroy(struct mi_writer *writer)
-{
-       int ret;
-
-       if (!writer) {
-               ret = -EINVAL;
-               goto end;
-       }
-
-       ret = config_writer_destroy(writer->writer);
-       if (ret < 0) {
-               goto end;
-       }
-
-       free(writer);
-end:
-       return ret;
-}
-
-int mi_lttng_writer_command_open(struct mi_writer *writer, const char *command)
-{
-       int ret;
-
-       /*
-        * A command is always the MI's root node, it must declare the current
-        * namespace and schema URIs and the schema's version.
-        */
-       ret = config_writer_open_element(writer->writer,
-                       mi_lttng_element_command);
-       if (ret) {
-               goto end;
-       }
-
-       ret = config_writer_write_attribute(writer->writer,
-                       mi_lttng_xmlns, DEFAULT_LTTNG_MI_NAMESPACE);
-       if (ret) {
-               goto end;
-       }
-
-       ret = config_writer_write_attribute(writer->writer,
-                       mi_lttng_xmlns_xsi, mi_lttng_w3_schema_uri);
-       if (ret) {
-               goto end;
-       }
-
-       ret = config_writer_write_attribute(writer->writer,
-                       mi_lttng_schema_location,
-                       mi_lttng_schema_location_uri);
-       if (ret) {
-               goto end;
-       }
-
-       ret = config_writer_write_attribute(writer->writer,
-                       mi_lttng_schema_version,
-                       mi_lttng_schema_version_value);
-       if (ret) {
-               goto end;
-       }
-
-       ret = mi_lttng_writer_write_element_string(writer,
-                       mi_lttng_element_command_name, command);
-end:
-       return ret;
-}
-
-int mi_lttng_writer_command_close(struct mi_writer *writer)
-{
-       return mi_lttng_writer_close_element(writer);
-}
-
-int mi_lttng_writer_open_element(struct mi_writer *writer,
-               const char *element_name)
-{
-       return config_writer_open_element(writer->writer, element_name);
-}
-
-int mi_lttng_writer_close_element(struct mi_writer *writer)
-{
-       return config_writer_close_element(writer->writer);
-}
-
-int mi_lttng_close_multi_element(struct mi_writer *writer,
-               unsigned int nb_element)
-{
-       int ret, i;
-
-       if (nb_element < 1) {
-               ret = 0;
-               goto end;
-       }
-       for (i = 0; i < nb_element; i++) {
-               ret = mi_lttng_writer_close_element(writer);
-               if (ret) {
-                       goto end;
-               }
-       }
-end:
-       return ret;
-}
-
-int mi_lttng_writer_write_element_unsigned_int(struct mi_writer *writer,
-               const char *element_name, uint64_t value)
-{
-       return config_writer_write_element_unsigned_int(writer->writer,
-                       element_name, value);
-}
-
-int mi_lttng_writer_write_element_signed_int(struct mi_writer *writer,
-               const char *element_name, int64_t value)
-{
-       return config_writer_write_element_signed_int(writer->writer,
-                       element_name, value);
-}
-
-int mi_lttng_writer_write_element_bool(struct mi_writer *writer,
-               const char *element_name, int value)
-{
-       return config_writer_write_element_bool(writer->writer,
-                       element_name, value);
-}
-
-int mi_lttng_writer_write_element_string(struct mi_writer *writer,
-               const char *element_name, const char *value)
-{
-       return config_writer_write_element_string(writer->writer,
-                       element_name, value);
-}
-
-int mi_lttng_writer_write_element_double(struct mi_writer *writer,
-               const char *element_name,
-               double value)
-{
-       return config_writer_write_element_double(
-                       writer->writer, element_name, value);
-}
-
-int mi_lttng_version(struct mi_writer *writer, struct mi_lttng_version_data *version,
-       const char *lttng_description, const char *lttng_license)
-{
-       int ret;
-
-       /* Open version */
-       ret = mi_lttng_writer_open_element(writer, mi_lttng_element_version);
-       if (ret) {
-               goto end;
-       }
-
-       /* Version string (contain info like rc etc.) */
-       ret = mi_lttng_writer_write_element_string(writer,
-                       mi_lttng_element_version_str, version->version);
-       if (ret) {
-               goto end;
-       }
-
-       /* Major version number */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-                       mi_lttng_element_version_major, version->version_major);
-       if (ret) {
-               goto end;
-       }
-
-       /* Minor version number */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-                       mi_lttng_element_version_minor, version->version_minor);
-       if (ret) {
-               goto end;
-       }
-
-       /* Commit version number */
-       ret = mi_lttng_writer_write_element_string(writer,
-                       mi_lttng_element_version_commit, version->version_commit);
-       if (ret) {
-               goto end;
-       }
-
-       /* Patch number */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-                       mi_lttng_element_version_patch_level, version->version_patchlevel);
-       if (ret) {
-               goto end;
-       }
-
-       /* Name of the version */
-       ret = mi_lttng_writer_write_element_string(writer,
-                       config_element_name, version->version_name);
-       if (ret) {
-               goto end;
-       }
-
-       /* Description mostly related to beer... */
-       ret = mi_lttng_writer_write_element_string(writer,
-                       mi_lttng_element_version_description, lttng_description);
-       if (ret) {
-               goto end;
-       }
-
-       /* url */
-       ret = mi_lttng_writer_write_element_string(writer,
-                       mi_lttng_element_version_web, version->package_url);
-       if (ret) {
-               goto end;
-       }
-
-       /* License: free as in free beer...no...*speech* */
-       ret = mi_lttng_writer_write_element_string(writer,
-                       mi_lttng_element_version_license, lttng_license);
-       if (ret) {
-               goto end;
-       }
-
-       /* Close version element */
-       ret = mi_lttng_writer_close_element(writer);
-
-end:
-       return ret;
-}
-
-int mi_lttng_sessions_open(struct mi_writer *writer)
-{
-       return mi_lttng_writer_open_element(writer, config_element_sessions);
-}
-
-int mi_lttng_session(struct mi_writer *writer,
-               struct lttng_session *session, int is_open)
-{
-       int ret;
-
-       LTTNG_ASSERT(session);
-
-       /* Open sessions element */
-       ret = mi_lttng_writer_open_element(writer,
-                       config_element_session);
-       if (ret) {
-               goto end;
-       }
-
-       /* Name of the session */
-       ret = mi_lttng_writer_write_element_string(writer,
-                       config_element_name, session->name);
-       if (ret) {
-               goto end;
-       }
-
-       /* Path */
-       ret = mi_lttng_writer_write_element_string(writer,
-                       config_element_path, session->path);
-       if (ret) {
-               goto end;
-       }
-
-       /* Enabled ? */
-       ret = mi_lttng_writer_write_element_bool(writer,
-                       config_element_enabled, session->enabled);
-       if (ret) {
-               goto end;
-       }
-
-       /* Snapshot mode */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-                       config_element_snapshot_mode, session->snapshot_mode);
-       if (ret) {
-               goto end;
-       }
-
-       /* Live timer interval in usec */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-                       config_element_live_timer_interval,
-                       session->live_timer_interval);
-       if (ret) {
-               goto end;
-       }
-
-       if (!is_open) {
-               /* Closing session element */
-               ret = mi_lttng_writer_close_element(writer);
-       }
-end:
-       return ret;
-
-}
-
-int mi_lttng_domains_open(struct mi_writer *writer)
-{
-       return mi_lttng_writer_open_element(writer, config_element_domains);
-}
-
-int mi_lttng_domain(struct mi_writer *writer,
-               struct lttng_domain *domain, int is_open)
-{
-       int ret = 0;
-       const char *str_domain;
-       const char *str_buffer;
-
-       LTTNG_ASSERT(domain);
-
-       /* Open domain element */
-       ret = mi_lttng_writer_open_element(writer, config_element_domain);
-       if (ret) {
-               goto end;
-       }
-
-       /* Domain Type */
-       str_domain = mi_lttng_domaintype_string(domain->type);
-       ret = mi_lttng_writer_write_element_string(writer, config_element_type,
-                       str_domain);
-       if (ret) {
-               goto end;
-       }
-
-       /* Buffer Type */
-       str_buffer= mi_lttng_buffertype_string(domain->buf_type);
-       ret = mi_lttng_writer_write_element_string(writer,
-                       config_element_buffer_type, str_buffer);
-       if (ret) {
-               goto end;
-       }
-
-       /* TODO: union  attr
-        * This union is not currently used and was added for
-        * future ust domain support.
-        * Date: 25-06-2014
-        * */
-
-       if (!is_open) {
-               /* Closing domain element */
-               ret = mi_lttng_writer_close_element(writer);
-       }
-
-end:
-       return ret;
-
-}
-
-int mi_lttng_channels_open(struct mi_writer *writer)
-{
-       return mi_lttng_writer_open_element(writer, config_element_channels);
-}
-
-int mi_lttng_channel(struct mi_writer *writer,
-               struct lttng_channel *channel, int is_open)
-{
-       int ret = 0;
-
-       LTTNG_ASSERT(channel);
-
-       /* Opening channel element */
-       ret = mi_lttng_writer_open_element(writer, config_element_channel);
-       if (ret) {
-               goto end;
-       }
-
-       /* Name */
-       ret = mi_lttng_writer_write_element_string(writer, config_element_name,
-                       channel->name);
-       if (ret) {
-               goto end;
-       }
-
-       /* Enabled ? */
-       ret = mi_lttng_writer_write_element_bool(writer,
-                       config_element_enabled, channel->enabled);
-       if (ret) {
-               goto end;
-       }
-
-       /* Attribute */
-       ret = mi_lttng_channel_attr(writer, &channel->attr);
-       if (ret) {
-               goto end;
-       }
-
-       if (!is_open) {
-               /* Closing channel element */
-               ret = mi_lttng_writer_close_element(writer);
-               if (ret) {
-                       goto end;
-               }
-       }
-end:
-       return ret;
-}
-
-int mi_lttng_channel_attr(struct mi_writer *writer,
-               struct lttng_channel_attr *attr)
-{
-       int ret = 0;
-       struct lttng_channel *chan = caa_container_of(attr,
-                       struct lttng_channel, attr);
-       uint64_t discarded_events, lost_packets, monitor_timer_interval;
-       int64_t blocking_timeout;
-
-       LTTNG_ASSERT(attr);
-
-       ret = lttng_channel_get_discarded_event_count(chan, &discarded_events);
-       if (ret) {
-               goto end;
-       }
-
-       ret = lttng_channel_get_lost_packet_count(chan, &lost_packets);
-       if (ret) {
-               goto end;
-       }
-
-       ret = lttng_channel_get_monitor_timer_interval(chan,
-                       &monitor_timer_interval);
-       if (ret) {
-               goto end;
-       }
-
-       ret = lttng_channel_get_blocking_timeout(chan,
-                       &blocking_timeout);
-       if (ret) {
-               goto end;
-       }
-
-       /* Opening Attributes */
-       ret = mi_lttng_writer_open_element(writer, config_element_attributes);
-       if (ret) {
-               goto end;
-       }
-
-       /* Overwrite */
-       ret = mi_lttng_writer_write_element_string(writer,
-               config_element_overwrite_mode,
-               attr->overwrite ? config_overwrite_mode_overwrite :
-                       config_overwrite_mode_discard);
-       if (ret) {
-               goto end;
-       }
-
-       /* Sub buffer size in byte */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-               config_element_subbuf_size, attr->subbuf_size);
-       if (ret) {
-               goto end;
-       }
-
-       /* Number of subbuffer (power of two) */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-               config_element_num_subbuf,
-               attr->num_subbuf);
-       if (ret) {
-               goto end;
-       }
-
-       /* Switch timer interval in usec */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-               config_element_switch_timer_interval,
-               attr->switch_timer_interval);
-       if (ret) {
-               goto end;
-       }
-
-       /* Read timer interval in usec */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-               config_element_read_timer_interval,
-               attr->read_timer_interval);
-       if (ret) {
-               goto end;
-       }
-
-       /* Monitor timer interval in usec */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-               config_element_monitor_timer_interval,
-               monitor_timer_interval);
-       if (ret) {
-               goto end;
-       }
-
-       /* Retry timeout in usec */
-       ret = mi_lttng_writer_write_element_signed_int(writer,
-               config_element_blocking_timeout,
-               blocking_timeout);
-       if (ret) {
-               goto end;
-       }
-
-       /* Event output */
-       ret = mi_lttng_writer_write_element_string(writer,
-               config_element_output_type,
-               attr->output == LTTNG_EVENT_SPLICE ?
-               config_output_type_splice : config_output_type_mmap);
-       if (ret) {
-               goto end;
-       }
-
-       /* Tracefile size in bytes */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-               config_element_tracefile_size, attr->tracefile_size);
-       if (ret) {
-               goto end;
-       }
-
-       /* Count of tracefiles */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-               config_element_tracefile_count,
-               attr->tracefile_count);
-       if (ret) {
-               goto end;
-       }
-
-       /* Live timer interval in usec*/
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-               config_element_live_timer_interval,
-               attr->live_timer_interval);
-       if (ret) {
-               goto end;
-       }
-
-       /* Discarded events */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-               config_element_discarded_events,
-               discarded_events);
-       if (ret) {
-               goto end;
-       }
-
-       /* Lost packets */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-               config_element_lost_packets,
-               lost_packets);
-       if (ret) {
-               goto end;
-       }
-
-       /* Closing attributes */
-       ret = mi_lttng_writer_close_element(writer);
-       if (ret) {
-               goto end;
-       }
-end:
-       return ret;
-
-}
-
-int mi_lttng_event_common_attributes(struct mi_writer *writer,
-               struct lttng_event *event)
-{
-       int ret;
-       const char *filter_expression;
-
-       /* Open event element */
-       ret = mi_lttng_writer_open_element(writer, config_element_event);
-       if (ret) {
-               goto end;
-       }
-
-       /* Event name */
-       ret = mi_lttng_writer_write_element_string(writer,
-                       config_element_name, event->name);
-       if (ret) {
-               goto end;
-       }
-
-       /* Event type */
-       ret = mi_lttng_writer_write_element_string(writer,
-                       config_element_type, mi_lttng_eventtype_string(event->type));
-       if (ret) {
-               goto end;
-       }
-
-       /* Is event enabled */
-       ret = mi_lttng_writer_write_element_bool(writer,
-                       config_element_enabled, event->enabled);
-       if (ret) {
-               goto end;
-       }
-
-       /* Event filter expression */
-       ret = lttng_event_get_filter_expression(event, &filter_expression);
-       if (ret) {
-               goto end;
-       }
-
-       if (filter_expression) {
-               ret = mi_lttng_writer_write_element_string(writer,
-                               config_element_filter_expression,
-                               filter_expression);
-               if (ret) {
-                       goto end;
-               }
-       }
-
-end:
-       return ret;
-}
-
-static int write_event_exclusions(struct mi_writer *writer,
-               struct lttng_event *event)
-{
-       int i;
-       int ret;
-       int exclusion_count;
-
-       /* Open event exclusions */
-       ret = mi_lttng_writer_open_element(writer, config_element_exclusions);
-       if (ret) {
-               goto end;
-       }
-
-       exclusion_count = lttng_event_get_exclusion_name_count(event);
-       if (exclusion_count < 0) {
-               ret = exclusion_count;
-               goto end;
-       }
-
-       for (i = 0; i < exclusion_count; i++) {
-               const char *name;
-
-               ret = lttng_event_get_exclusion_name(event, i, &name);
-               if (ret) {
-                       /* Close exclusions */
-                       mi_lttng_writer_close_element(writer);
-                       goto end;
-               }
-
-               ret = mi_lttng_writer_write_element_string(writer,
-                               config_element_exclusion, name);
-               if (ret) {
-                       /* Close exclusions */
-                       mi_lttng_writer_close_element(writer);
-                       goto end;
-               }
-       }
-
-       /* Close exclusions */
-       ret = mi_lttng_writer_close_element(writer);
-
-end:
-       return ret;
-}
-
-int mi_lttng_event_tracepoint_loglevel(struct mi_writer *writer,
-               struct lttng_event *event, enum lttng_domain_type domain)
-{
-       int ret;
-
-       /* Event loglevel */
-       ret = mi_lttng_writer_write_element_string(writer,
-                       config_element_loglevel,
-                       mi_lttng_loglevel_string(event->loglevel, domain));
-       if (ret) {
-               goto end;
-       }
-
-       /* Log level type */
-       ret = mi_lttng_writer_write_element_string(writer,
-                       config_element_loglevel_type,
-                       mi_lttng_logleveltype_string(event->loglevel_type));
-       if (ret) {
-               goto end;
-       }
-
-       /* Event exclusions */
-       ret = write_event_exclusions(writer, event);
-
-end:
-       return ret;
-}
-
-int mi_lttng_event_tracepoint_no_loglevel(struct mi_writer *writer,
-               struct lttng_event *event)
-{
-       /* event exclusion filter */
-       return write_event_exclusions(writer, event);
-}
-
-int mi_lttng_event_function_probe(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;
-       }
-
-       if (event->attr.probe.addr != 0) {
-               /* event probe address */
-               ret = mi_lttng_writer_write_element_unsigned_int(writer,
-                               config_element_address, event->attr.probe.addr);
-               if (ret) {
-                       goto end;
-               }
-       } else {
-               /* event probe offset */
-               ret = mi_lttng_writer_write_element_unsigned_int(writer,
-                               config_element_offset, event->attr.probe.offset);
-               if (ret) {
-                       goto end;
-               }
-
-               /* event probe symbol_name */
-               ret = mi_lttng_writer_write_element_string(writer,
-                               config_element_symbol_name, event->attr.probe.symbol_name);
-               if (ret) {
-                       goto end;
-               }
-       }
-
-       /* Close probe_attributes and attributes */
-       ret = mi_lttng_close_multi_element(writer, 2);
-end:
-       return ret;
-}
-
-static
-int mi_lttng_event_userspace_probe(struct mi_writer *writer,
-               struct lttng_event *event)
-{
-       int ret;
-       const struct lttng_userspace_probe_location *location;
-       const struct lttng_userspace_probe_location_lookup_method *lookup_method;
-       enum lttng_userspace_probe_location_lookup_method_type lookup_type;
-
-       location = lttng_event_get_userspace_probe_location(event);
-       if (!location) {
-               ret = -LTTNG_ERR_INVALID;
-               goto end;
-       }
-
-       lookup_method = lttng_userspace_probe_location_get_lookup_method(location);
-       if (!lookup_method) {
-               ret = -LTTNG_ERR_INVALID;
-               goto end;
-       }
-
-       lookup_type = lttng_userspace_probe_location_lookup_method_get_type(lookup_method);
-
-       ret = mi_lttng_writer_open_element(writer, config_element_attributes);
-       if (ret) {
-               goto end;
-       }
-
-       switch (lttng_userspace_probe_location_get_type(location)) {
-       case LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION:
-       {
-               const char *function_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_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;
-}
-
-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;
-}
-
-int mi_lttng_events_open(struct mi_writer *writer)
-{
-       return mi_lttng_writer_open_element(writer, config_element_events);
-}
-
-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;
-}
-
-int mi_lttng_trackers_open(struct mi_writer *writer)
-{
-       return mi_lttng_writer_open_element(
-                       writer, config_element_process_attr_trackers);
-}
-
-static int get_tracker_elements(enum lttng_process_attr process_attr,
-               const char **element_process_attr_tracker,
-               const char **element_process_attr_value)
-{
-       int ret = 0;
-
-       switch (process_attr) {
-       case LTTNG_PROCESS_ATTR_PROCESS_ID:
-               *element_process_attr_tracker =
-                               config_element_process_attr_tracker_pid;
-               *element_process_attr_value =
-                               config_element_process_attr_pid_value;
-               break;
-       case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID:
-               *element_process_attr_tracker =
-                               config_element_process_attr_tracker_vpid;
-               *element_process_attr_value =
-                               config_element_process_attr_vpid_value;
-               break;
-       case LTTNG_PROCESS_ATTR_USER_ID:
-               *element_process_attr_tracker =
-                               config_element_process_attr_tracker_uid;
-               *element_process_attr_value =
-                               config_element_process_attr_uid_value;
-               break;
-       case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID:
-               *element_process_attr_tracker =
-                               config_element_process_attr_tracker_vuid;
-               *element_process_attr_value =
-                               config_element_process_attr_vuid_value;
-               break;
-       case LTTNG_PROCESS_ATTR_GROUP_ID:
-               *element_process_attr_tracker =
-                               config_element_process_attr_tracker_gid;
-               *element_process_attr_value =
-                               config_element_process_attr_gid_value;
-               break;
-       case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID:
-               *element_process_attr_tracker =
-                               config_element_process_attr_tracker_vgid;
-               *element_process_attr_value =
-                               config_element_process_attr_vgid_value;
-               break;
-       default:
-               ret = LTTNG_ERR_SAVE_IO_FAIL;
-       }
-       return ret;
-}
-
-int mi_lttng_process_attribute_tracker_open(
-               struct mi_writer *writer, enum lttng_process_attr process_attr)
-{
-       int ret;
-       const char *element_tracker, *element_value;
-
-       ret = get_tracker_elements(
-                       process_attr, &element_tracker, &element_value);
-       if (ret) {
-               return ret;
-       }
-
-       /* Open process attribute tracker element */
-       ret = mi_lttng_writer_open_element(writer, element_tracker);
-       if (ret) {
-               goto end;
-       }
-
-       /* Open values element */
-       ret = mi_lttng_process_attr_values_open(writer);
-end:
-       return ret;
-}
-
-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.
- */
-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;
-}
-
-int mi_lttng_process_attr_values_open(struct mi_writer *writer)
-{
-       return mi_lttng_writer_open_element(
-                       writer, config_element_process_attr_values);
-}
-
-int mi_lttng_all_process_attribute_value(struct mi_writer *writer,
-               enum lttng_process_attr process_attr,
-               bool is_open)
-{
-       int ret;
-       const char *element_id_tracker, *element_target_id;
-
-       ret = get_tracker_elements(
-                       process_attr, &element_id_tracker, &element_target_id);
-       if (ret) {
-               return ret;
-       }
-
-       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;
-       }
-
-       if (!is_open) {
-               ret = mi_lttng_writer_close_element(writer);
-               if (ret) {
-                       goto end;
-               }
-       }
-end:
-       return ret;
-}
-
-int mi_lttng_integral_process_attribute_value(struct mi_writer *writer,
-               enum lttng_process_attr process_attr,
-               int64_t value,
-               bool is_open)
-{
-       int ret;
-       const char *element_id_tracker, *element_target_id;
-
-       ret = get_tracker_elements(
-                       process_attr, &element_id_tracker, &element_target_id);
-       if (ret) {
-               return ret;
-       }
-
-       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_signed_int(
-                       writer, config_element_process_attr_id, value);
-       if (ret) {
-               goto end;
-       }
-
-       ret = mi_lttng_writer_close_element(writer);
-       if (ret) {
-               goto end;
-       }
-
-       if (!is_open) {
-               ret = mi_lttng_writer_close_element(writer);
-               if (ret) {
-                       goto end;
-               }
-       }
-
-end:
-       return ret;
-}
-
-int mi_lttng_string_process_attribute_value(struct mi_writer *writer,
-               enum lttng_process_attr process_attr,
-               const char *value,
-               bool is_open)
-
-{
-       int ret;
-       const char *element_id_tracker, *element_target_id;
-
-       ret = get_tracker_elements(
-                       process_attr, &element_id_tracker, &element_target_id);
-       if (ret) {
-               return ret;
-       }
-
-       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_string(
-                       writer, config_element_name, value);
-       if (ret) {
-               goto end;
-       }
-
-       ret = mi_lttng_writer_close_element(writer);
-       if (ret) {
-               goto end;
-       }
-
-       if (!is_open) {
-               ret = mi_lttng_writer_close_element(writer);
-               if (ret) {
-                       goto end;
-               }
-       }
-
-end:
-       return ret;
-}
-
-int mi_lttng_event_fields_open(struct mi_writer *writer)
-{
-       return mi_lttng_writer_open_element(writer, mi_lttng_element_event_fields);
-}
-
-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;
-}
-
-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;
-}
-
-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;
-}
-
-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;
-}
-
-int mi_lttng_snapshot_list_output(struct mi_writer *writer,
-               const 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;
-}
-
-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;
-}
-
-int mi_lttng_snapshot_add_output(struct mi_writer *writer,
-               const char *current_session_name, const char *n_ptr,
-               struct lttng_snapshot_output *output)
-{
-       int ret;
-
-       /* Open element snapshot */
-       ret = mi_lttng_writer_open_element(writer,
-                       mi_lttng_element_command_snapshot);
-       if (ret) {
-               goto end;
-       }
-
-       /* Snapshot output id */
-       ret = mi_lttng_writer_write_element_unsigned_int(writer,
-                       mi_lttng_element_id, output->id);
-       if (ret) {
-               goto end;
-       }
-
-       /* Snapshot output names */
-       ret = mi_lttng_writer_write_element_string(writer,
-                       config_element_name, n_ptr);
-       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;
-       }
-
-       /* Snapshot added 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;
-       }
-
-       /* 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 element */
-       ret = mi_lttng_writer_close_element(writer);
-
-end:
-       return ret;
-}
-
-int mi_lttng_snapshot_record(struct mi_writer *writer,
-               const char *current_session_name, const char *url,
-               const char *cmdline_ctrl_url, const char *cmdline_data_url)
-{
-       int ret;
-
-       /* Open element snapshot */
-       ret = mi_lttng_writer_open_element(writer,
-                       mi_lttng_element_command_snapshot);
-       if (ret) {
-               goto end;
-       }
-
-       /*
-        * If a valid an URL was given, serialize it,
-        * else take the command line data and ctrl urls*/
-       if (url) {
-               /* Destination of the output (ctrl_url)*/
-               ret = mi_lttng_writer_write_element_string(writer,
-                               mi_lttng_element_snapshot_ctrl_url, url);
-               if (ret) {
-                       goto end;
-               }
-       } else if (cmdline_ctrl_url) {
-               /* Destination of the output (ctrl_url)*/
-               ret = mi_lttng_writer_write_element_string(writer,
-                               mi_lttng_element_snapshot_ctrl_url, cmdline_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, cmdline_data_url);
-               if (ret) {
-                       goto end;
-               }
-       }
-
-       /* Close record_snapshot element */
-       ret = mi_lttng_writer_close_element(writer);
-
-end:
-       return ret;
-}
-
-int mi_lttng_rotation_schedule(struct mi_writer *writer,
-               const struct lttng_rotation_schedule *schedule)
-{
-       int ret = 0;
-       enum lttng_rotation_status status;
-       uint64_t value;
-       const char *element_name;
-       const char *value_name;
-       bool empty_schedule = false;
-
-       switch (lttng_rotation_schedule_get_type(schedule)) {
-       case LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC:
-               status = lttng_rotation_schedule_periodic_get_period(schedule,
-                               &value);
-               element_name = mi_lttng_element_rotation_schedule_periodic;
-               value_name = mi_lttng_element_rotation_schedule_periodic_time_us;
-               break;
-       case LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD:
-               status = lttng_rotation_schedule_size_threshold_get_threshold(
-                               schedule, &value);
-               element_name = mi_lttng_element_rotation_schedule_size_threshold;
-               value_name = mi_lttng_element_rotation_schedule_size_threshold_bytes;
-               break;
-       default:
-               ret = -1;
-               goto end;
-       }
-
-       if (status != LTTNG_ROTATION_STATUS_OK) {
-               if (status == LTTNG_ROTATION_STATUS_UNAVAILABLE) {
-                       empty_schedule = true;
-               } else {
-                       ret = -1;
-                       goto end;
-               }
-       }
-
-       ret = mi_lttng_writer_open_element(writer, element_name);
-       if (ret) {
-               goto end;
-       }
-
-       if (!empty_schedule) {
-               ret = mi_lttng_writer_write_element_unsigned_int(writer,
-                               value_name, value);
-               if (ret) {
-                       goto end;
-               }
-       }
-
-       /* Close schedule descriptor element. */
-       ret = mi_lttng_writer_close_element(writer);
-       if (ret) {
-               goto end;
-       }
-end:
-       return ret;
-}
-
-int mi_lttng_rotation_schedule_result(struct mi_writer *writer,
-               const struct lttng_rotation_schedule *schedule,
-               bool success)
-{
-       int ret = 0;
-
-       ret = mi_lttng_writer_open_element(writer,
-                       mi_lttng_element_rotation_schedule_result);
-       if (ret) {
-               goto end;
-       }
-
-       ret = mi_lttng_writer_open_element(writer,
-                       mi_lttng_element_rotation_schedule);
-       if (ret) {
-               goto end;
-       }
-
-       ret = mi_lttng_rotation_schedule(writer, schedule);
-       if (ret) {
-               goto end;
-       }
-
-       /* Close rotation_schedule element */
-       ret = mi_lttng_writer_close_element(writer);
-       if (ret) {
-               goto end;
-       }
-
-       ret = mi_lttng_writer_write_element_bool(writer,
-                       mi_lttng_element_command_success, success);
-       if (ret) {
-               goto end;
-       }
-
-       /* Close rotation_schedule_result element */
-       ret = mi_lttng_writer_close_element(writer);
-       if (ret) {
-               goto end;
-       }
-end:
-       return ret;
-}
-
-static
-int mi_lttng_location(struct mi_writer *writer,
-               const struct lttng_trace_archive_location *location)
-{
-       int ret = 0;
-       enum lttng_trace_archive_location_type location_type;
-       enum lttng_trace_archive_location_status status;
-
-       location_type = lttng_trace_archive_location_get_type(location);
-
-       switch (location_type) {
-       case LTTNG_TRACE_ARCHIVE_LOCATION_TYPE_LOCAL:
-       {
-               const char *absolute_path;
-
-               status = lttng_trace_archive_location_local_get_absolute_path(
-                               location, &absolute_path);
-               if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
-                       ret = -1;
-                       goto end;
-               }
-
-               ret = mi_lttng_writer_open_element(writer,
-                               mi_lttng_element_rotation_location_local);
-               if (ret) {
-                       goto end;
-               }
-
-
-               ret = mi_lttng_writer_write_element_string(writer,
-                               mi_lttng_element_rotation_location_local_absolute_path,
-                               absolute_path);
-               if (ret) {
-                       goto end;
-               }
-
-               /* Close local element */
-               ret = mi_lttng_writer_close_element(writer);
-               if (ret) {
-                       goto end;
-               }
-               break;
-       }
-       case LTTNG_TRACE_ARCHIVE_LOCATION_TYPE_RELAY:
-       {
-               uint16_t control_port, data_port;
-               const char *host, *relative_path;
-               enum lttng_trace_archive_location_relay_protocol_type protocol;
-
-               /* Fetch all relay location parameters. */
-               status = lttng_trace_archive_location_relay_get_protocol_type(
-                               location, &protocol);
-               if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
-                       ret = -1;
-                       goto end;
-               }
-
-               status = lttng_trace_archive_location_relay_get_host(
-                               location, &host);
-               if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
-                       ret = -1;
-                       goto end;
-               }
-
-               status = lttng_trace_archive_location_relay_get_control_port(
-                               location, &control_port);
-               if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
-                       ret = -1;
-                       goto end;
-               }
-
-               status = lttng_trace_archive_location_relay_get_data_port(
-                               location, &data_port);
-               if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
-                       ret = -1;
-                       goto end;
-               }
-
-               status = lttng_trace_archive_location_relay_get_relative_path(
-                               location, &relative_path);
-               if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
-                       ret = -1;
-                       goto end;
-               }
-
-               ret = mi_lttng_writer_open_element(writer,
-                               mi_lttng_element_rotation_location_relay);
-               if (ret) {
-                       goto end;
-               }
-
-               ret = mi_lttng_writer_write_element_string(writer,
-                               mi_lttng_element_rotation_location_relay_host,
-                               host);
-               if (ret) {
-                       goto end;
-               }
-
-               ret = mi_lttng_writer_write_element_unsigned_int(writer,
-                               mi_lttng_element_rotation_location_relay_control_port,
-                               control_port);
-               if (ret) {
-                       goto end;
-               }
-
-               ret = mi_lttng_writer_write_element_unsigned_int(writer,
-                               mi_lttng_element_rotation_location_relay_data_port,
-                               data_port);
-               if (ret) {
-                       goto end;
-               }
-
-               ret = mi_lttng_writer_write_element_string(writer,
-                               mi_lttng_element_rotation_location_relay_protocol,
-                               mi_lttng_trace_archive_location_relay_protocol_type_string(protocol));
-               if (ret) {
-                       goto end;
-               }
-
-               ret = mi_lttng_writer_write_element_string(writer,
-                               mi_lttng_element_rotation_location_relay_relative_path,
-                               relative_path);
-               if (ret) {
-                       goto end;
-               }
-
-               /* Close relay element */
-               ret = mi_lttng_writer_close_element(writer);
-               if (ret) {
-                       goto end;
-               }
-               break;
-       }
-       default:
-               abort();
-       }
-end:
-       return ret;
-}
-
-int mi_lttng_rotate(struct mi_writer *writer,
-               const char *session_name,
-               enum lttng_rotation_state rotation_state,
-               const struct lttng_trace_archive_location *location)
-{
-       int ret;
-
-       ret = mi_lttng_writer_open_element(writer,
-                       mi_lttng_element_rotation);
-       if (ret) {
-               goto end;
-       }
-
-       ret = mi_lttng_writer_write_element_string(writer,
-                       mi_lttng_element_session_name,
-                       session_name);
-       if (ret) {
-               goto end;
-       }
-
-       ret = mi_lttng_writer_write_element_string(writer,
-                       mi_lttng_element_rotation_state,
-                       mi_lttng_rotation_state_string(rotation_state));
-       if (ret) {
-               goto end;
-       }
-
-       if (!location) {
-               /* Not a serialization error. */
-               goto close_rotation;
-       }
-
-       ret = mi_lttng_writer_open_element(writer,
-                       mi_lttng_element_rotation_location);
-       if (ret) {
-               goto end;
-       }
-
-       ret = mi_lttng_location(writer, location);
-       if (ret) {
-               goto close_location;
-       }
-
-close_location:
-       /* Close location element */
-       ret = mi_lttng_writer_close_element(writer);
-       if (ret) {
-               goto end;
-       }
-       
-close_rotation:
-       /* Close rotation element */
-       ret = mi_lttng_writer_close_element(writer);
-       if (ret) {
-               goto end;
-       }
-end:
-       return ret;
-}
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