-/*
- * event-expr.c
- *
- * Copyright (C) 2020 Philippe Proulx <pproulx@efficios.com>
- *
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- */
-
-#define _LGPL_SOURCE
-#include <stddef.h>
-
-#include <common/bytecode/bytecode.h>
-#include <common/error.h>
-#include <common/macros.h>
-#include <common/mi-lttng.h>
-#include <lttng/event-expr-internal.h>
-#include <lttng/event-expr.h>
-#include <stdio.h>
-
-enum lttng_event_expr_type lttng_event_expr_get_type(
- const struct lttng_event_expr *expr)
-{
- enum lttng_event_expr_type type;
-
- if (!expr) {
- type = LTTNG_EVENT_EXPR_TYPE_INVALID;
- goto end;
- }
-
- type = expr->type;
-
-end:
- return type;
-}
-
-static
-struct lttng_event_expr *create_empty_expr(enum lttng_event_expr_type type,
- size_t size)
-{
- struct lttng_event_expr *expr;
-
- expr = zmalloc(size);
- if (!expr) {
- goto end;
- }
-
- expr->type = type;
-
-end:
- return expr;
-}
-
-static
-struct lttng_event_expr_field *create_field_event_expr(
- enum lttng_event_expr_type type,
- const char *name)
-{
- struct lttng_event_expr_field *expr =
- container_of(
- create_empty_expr(type, sizeof(*expr)),
- struct lttng_event_expr_field, parent);
-
- if (!expr) {
- goto error;
- }
-
- LTTNG_ASSERT(name);
- expr->name = strdup(name);
- if (!expr->name) {
- goto error;
- }
-
- goto end;
-
-error:
- if (expr) {
- lttng_event_expr_destroy(&expr->parent);
- }
- expr = NULL;
-
-end:
- return expr;
-}
-
-struct lttng_event_expr *lttng_event_expr_event_payload_field_create(
- const char *field_name)
-{
- struct lttng_event_expr *expr = NULL;
-
- if (!field_name) {
- goto end;
- }
-
- expr = &create_field_event_expr(
- LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD,
- field_name)->parent;
-
-end:
- return expr;
-}
-
-struct lttng_event_expr *lttng_event_expr_channel_context_field_create(
- const char *field_name)
-{
- struct lttng_event_expr *expr = NULL;
-
- if (!field_name) {
- goto end;
- }
-
- expr = &create_field_event_expr(
- LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD,
- field_name)->parent;
-
-end:
- return expr;
-}
-
-struct lttng_event_expr *lttng_event_expr_app_specific_context_field_create(
- const char *provider_name, const char *type_name)
-{
- struct lttng_event_expr_app_specific_context_field *expr = NULL;
- struct lttng_event_expr *ret_parent_expr;
-
- if (!type_name || !provider_name) {
- goto error;
- }
-
- expr = container_of(create_empty_expr(
- LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD,
- sizeof(*expr)),
- struct lttng_event_expr_app_specific_context_field,
- parent);
- if (!expr) {
- goto error;
- }
-
- expr->provider_name = strdup(provider_name);
- if (!expr->provider_name) {
- goto error;
- }
-
- expr->type_name = strdup(type_name);
- if (!expr->type_name) {
- goto error;
- }
-
- ret_parent_expr = &expr->parent;
- goto end;
-
-error:
- if (expr) {
- lttng_event_expr_destroy(&expr->parent);
- }
- ret_parent_expr = NULL;
-
-end:
- return ret_parent_expr;
-}
-
-struct lttng_event_expr *lttng_event_expr_array_field_element_create(
- struct lttng_event_expr *array_field_expr,
- unsigned int index)
-{
- struct lttng_event_expr_array_field_element *expr = NULL;
- struct lttng_event_expr *ret_parent_expr;
-
- /* The parent array field expression must be an l-value */
- if (!array_field_expr ||
- !lttng_event_expr_is_lvalue(array_field_expr)) {
- goto error;
- }
-
- expr = container_of(create_empty_expr(
- LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT,
- sizeof(*expr)),
- struct lttng_event_expr_array_field_element,
- parent);
- if (!expr) {
- goto error;
- }
-
- expr->array_field_expr = array_field_expr;
- expr->index = index;
- ret_parent_expr = &expr->parent;
- goto end;
-
-error:
- ret_parent_expr = NULL;
-
-end:
- return ret_parent_expr;
-}
-
-const char *lttng_event_expr_event_payload_field_get_name(
- const struct lttng_event_expr *expr)
-{
- const char *ret = NULL;
-
- if (!expr || expr->type != LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD) {
- goto end;
- }
-
- ret = container_of(expr,
- const struct lttng_event_expr_field, parent)->name;
-
-end:
- return ret;
-}
-
-const char *lttng_event_expr_channel_context_field_get_name(
- const struct lttng_event_expr *expr)
-{
- const char *ret = NULL;
-
- if (!expr || expr->type != LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD) {
- goto end;
- }
-
- ret = container_of(expr,
- const struct lttng_event_expr_field, parent)->name;
-
-end:
- return ret;
-}
-
-const char *lttng_event_expr_app_specific_context_field_get_provider_name(
- const struct lttng_event_expr *expr)
-{
- const char *ret = NULL;
-
- if (!expr || expr->type != LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD) {
- goto end;
- }
-
- ret = container_of(expr,
- const struct lttng_event_expr_app_specific_context_field,
- parent)->provider_name;
-
-end:
- return ret;
-}
-
-const char *lttng_event_expr_app_specific_context_field_get_type_name(
- const struct lttng_event_expr *expr)
-{
- const char *ret = NULL;
-
- if (!expr || expr->type != LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD) {
- goto end;
- }
-
- ret = container_of(expr,
- const struct lttng_event_expr_app_specific_context_field,
- parent)->type_name;
-
-end:
- return ret;
-}
-
-const struct lttng_event_expr *
-lttng_event_expr_array_field_element_get_parent_expr(
- const struct lttng_event_expr *expr)
-{
- const struct lttng_event_expr *ret = NULL;
-
- if (!expr || expr->type != LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT) {
- goto end;
- }
-
- ret = container_of(expr,
- const struct lttng_event_expr_array_field_element,
- parent)->array_field_expr;
-
-end:
- return ret;
-}
-
-enum lttng_event_expr_status lttng_event_expr_array_field_element_get_index(
- const struct lttng_event_expr *expr, unsigned int *index)
-{
- enum lttng_event_expr_status ret = LTTNG_EVENT_EXPR_STATUS_OK;
-
- if (!expr || expr->type != LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT ||
- !index) {
- ret = LTTNG_EVENT_EXPR_STATUS_INVALID;
- goto end;
- }
-
- *index = container_of(expr,
- const struct lttng_event_expr_array_field_element,
- parent)->index;
-
-end:
- return ret;
-}
-
-bool lttng_event_expr_is_equal(const struct lttng_event_expr *expr_a,
- const struct lttng_event_expr *expr_b)
-{
- bool is_equal = true;
-
- if (!expr_a && !expr_b) {
- /* Both `NULL`: equal */
- goto end;
- }
-
- if (!expr_a || !expr_b) {
- /* Only one `NULL`: not equal */
- goto not_equal;
- }
-
- if (expr_a->type != expr_b->type) {
- /* Different types: not equal */
- goto not_equal;
- }
-
- switch (expr_a->type) {
- case LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD:
- case LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD:
- {
- const struct lttng_event_expr_field *field_expr_a =
- container_of(expr_a,
- const struct lttng_event_expr_field,
- parent);
- const struct lttng_event_expr_field *field_expr_b =
- container_of(expr_b,
- const struct lttng_event_expr_field,
- parent);
-
- if (strcmp(field_expr_a->name, field_expr_b->name) != 0) {
- goto not_equal;
- }
-
- break;
- }
- case LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD:
- {
- const struct lttng_event_expr_app_specific_context_field *field_expr_a =
- container_of(expr_a,
- const struct lttng_event_expr_app_specific_context_field,
- parent);
- const struct lttng_event_expr_app_specific_context_field *field_expr_b =
- container_of(expr_b,
- const struct lttng_event_expr_app_specific_context_field,
- parent);
-
- if (strcmp(field_expr_a->provider_name,
- field_expr_b->provider_name) != 0) {
- goto not_equal;
- }
-
- if (strcmp(field_expr_a->type_name,
- field_expr_b->type_name) != 0) {
- goto not_equal;
- }
-
- break;
- }
- case LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT:
- {
- const struct lttng_event_expr_array_field_element *elem_expr_a =
- container_of(expr_a,
- const struct lttng_event_expr_array_field_element,
- parent);
- const struct lttng_event_expr_array_field_element *elem_expr_b =
- container_of(expr_b,
- const struct lttng_event_expr_array_field_element,
- parent);
-
- if (!lttng_event_expr_is_equal(elem_expr_a->array_field_expr,
- elem_expr_b->array_field_expr)) {
- goto not_equal;
- }
-
- if (elem_expr_a->index != elem_expr_b->index) {
- goto not_equal;
- }
-
- break;
- }
- default:
- break;
- }
-
- goto end;
-
-not_equal:
- is_equal = false;
-
-end:
- return is_equal;
-}
-
-void lttng_event_expr_destroy(struct lttng_event_expr *expr)
-{
- if (!expr) {
- goto end;
- }
-
- switch (expr->type) {
- case LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD:
- case LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD:
- {
- struct lttng_event_expr_field *field_expr =
- container_of(expr,
- struct lttng_event_expr_field, parent);
-
- free(field_expr->name);
- break;
- }
- case LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD:
- {
- struct lttng_event_expr_app_specific_context_field *field_expr =
- container_of(expr,
- struct lttng_event_expr_app_specific_context_field,
- parent);
-
- free(field_expr->provider_name);
- free(field_expr->type_name);
- break;
- }
- case LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT:
- {
- struct lttng_event_expr_array_field_element *elem_expr =
- container_of(expr,
- struct lttng_event_expr_array_field_element,
- parent);
-
- lttng_event_expr_destroy(elem_expr->array_field_expr);
- break;
- }
- default:
- break;
- }
-
- free(expr);
-
-end:
- return;
-}
-
-static int event_expr_to_bytecode_recursive(const struct lttng_event_expr *expr,
- struct lttng_bytecode_alloc **bytecode,
- struct lttng_bytecode_alloc **bytecode_reloc)
-{
- int status;
- enum lttng_event_expr_status event_expr_status;
-
- switch (lttng_event_expr_get_type(expr)) {
- case LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD:
- {
- const char *name;
-
- status = bytecode_push_get_payload_root(bytecode);
- if (status) {
- ERR("Failed to get payload root from bytecode");
- goto end;
- }
-
- name = lttng_event_expr_event_payload_field_get_name(expr);
- if (!name) {
- ERR("Failed to get payload field name from event expression");
- status = -1;
- goto end;
- }
-
- status = bytecode_push_get_symbol(
- bytecode, bytecode_reloc, name);
- if (status) {
- ERR("Failed to push 'get symbol %s' in bytecode", name);
- goto end;
- }
-
- break;
- }
- case LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD:
- {
- const char *name;
-
- status = bytecode_push_get_context_root(bytecode);
- if (status) {
- ERR("Failed to get context root from bytecode");
- goto end;
- }
-
- name = lttng_event_expr_channel_context_field_get_name(expr);
- if (!name) {
- ERR("Failed to get channel context field name from event expression");
- status = -1;
- goto end;
- }
-
- status = bytecode_push_get_symbol(
- bytecode, bytecode_reloc, name);
- if (status) {
- ERR("Failed to push 'get symbol %s' in bytecode", name);
- goto end;
- }
-
- break;
- }
- case LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD:
- {
- int ret;
- char *name = NULL;
- const char *provider_name, *type_name;
-
- status = bytecode_push_get_app_context_root(bytecode);
- if (status) {
- ERR("Failed to get application context root from bytecode");
- goto end;
- }
-
- provider_name = lttng_event_expr_app_specific_context_field_get_provider_name(
- expr);
- if (!provider_name) {
- ERR("Failed to get application context provider name from event expression");
- status = -1;
- goto end;
- }
-
- type_name = lttng_event_expr_app_specific_context_field_get_type_name(
- expr);
- if (!type_name) {
- ERR("Failed to get application context type name from event expression");
- status = -1;
- goto end;
- }
-
- /*
- * Reconstitute the app context field name from its two parts.
- */
- ret = asprintf(&name, "%s:%s", provider_name, type_name);
- if (ret < 0) {
- PERROR("Failed to format application specific context: provider_name = '%s', type_name = '%s'",
- provider_name, type_name);
- status = -1;
- goto end;
- }
-
- status = bytecode_push_get_symbol(
- bytecode, bytecode_reloc, name);
- free(name);
- if (status) {
- ERR("Failed to push 'get symbol %s:%s' in bytecode",
- provider_name, type_name);
- goto end;
- }
-
- break;
- }
- case LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT:
- {
- unsigned int index;
- const struct lttng_event_expr *parent;
-
- parent = lttng_event_expr_array_field_element_get_parent_expr(
- expr);
- if (!parent) {
- ERR("Failed to get parent expression from array event expression");
- status = -1;
- goto end;
- }
-
- status = event_expr_to_bytecode_recursive(
- parent, bytecode, bytecode_reloc);
- if (status) {
- goto end;
- }
-
- event_expr_status =
- lttng_event_expr_array_field_element_get_index(
- expr, &index);
- if (event_expr_status != LTTNG_EVENT_EXPR_STATUS_OK) {
- ERR("Failed to get array field element index from event expression");
- status = -1;
- goto end;
- }
-
- status = bytecode_push_get_index_u64(bytecode, index);
- if (status) {
- ERR("Failed to push 'get index %u' in bytecode", index);
- goto end;
- }
-
- break;
- }
- default:
- abort();
- }
-
- status = 0;
-end:
- return status;
-}
-
-int lttng_event_expr_to_bytecode(const struct lttng_event_expr *expr,
- struct lttng_bytecode **bytecode_out)
-{
- int status;
- struct return_op ret_insn;
- struct lttng_bytecode_alloc *bytecode = NULL;
- struct lttng_bytecode_alloc *bytecode_reloc = NULL;
-
- status = bytecode_init(&bytecode);
- if (status) {
- ERR("Failed to initialize bytecode");
- goto end;
- }
-
- status = bytecode_init(&bytecode_reloc);
- if (status) {
- ERR("Failed to initialize relocation bytecode");
- goto end;
- }
-
- status = event_expr_to_bytecode_recursive(
- expr, &bytecode, &bytecode_reloc);
- if (status) {
- /* Errors already logged. */
- goto end;
- }
-
- ret_insn.op = BYTECODE_OP_RETURN;
- bytecode_push(&bytecode, &ret_insn, 1, sizeof(ret_insn));
-
- /* Append symbol table to bytecode. */
- bytecode->b.reloc_table_offset = bytecode_get_len(&bytecode->b);
- status = bytecode_push(&bytecode, bytecode_reloc->b.data, 1,
- bytecode_get_len(&bytecode_reloc->b));
- if (status) {
- ERR("Failed to push symbol table to bytecode");
- goto end;
- }
-
- /* Copy the `lttng_bytecode` out of the `lttng_bytecode_alloc`. */
- *bytecode_out = lttng_bytecode_copy(&bytecode->b);
- if (!*bytecode_out) {
- status = -1;
- goto end;
- }
-
-end:
- if (bytecode) {
- free(bytecode);
- }
-
- if (bytecode_reloc) {
- free(bytecode_reloc);
- }
-
- return status;
-}
-
-static
-enum lttng_error_code lttng_event_expr_event_payload_field_mi_serialize(
- const struct lttng_event_expr *expression,
- struct mi_writer *writer)
-{
- int ret;
- enum lttng_error_code ret_code;
- const char *name = NULL;
-
- LTTNG_ASSERT(expression);
- LTTNG_ASSERT(writer);
- LTTNG_ASSERT(expression->type == LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD);
-
- name = lttng_event_expr_event_payload_field_get_name(expression);
- LTTNG_ASSERT(name);
-
- /* Open event expr payload field element. */
- ret = mi_lttng_writer_open_element(
- writer, mi_lttng_element_event_expr_payload_field);
- if (ret) {
- goto mi_error;
- }
-
- /* Name. */
- ret = mi_lttng_writer_write_element_string(
- writer, config_element_name, name);
- if (ret) {
- goto mi_error;
- }
-
- /* Close event expr payload field element. */
- ret = mi_lttng_writer_close_element(writer);
- if (ret) {
- goto mi_error;
- }
-
- ret_code = LTTNG_OK;
- goto end;
-
-mi_error:
- ret_code = LTTNG_ERR_MI_IO_FAIL;
-end:
- return ret_code;
-}
-
-static
-enum lttng_error_code lttng_event_expr_channel_context_field_mi_serialize(
- const struct lttng_event_expr *expression,
- struct mi_writer *writer)
-{
- int ret;
- enum lttng_error_code ret_code;
- const char *name = NULL;
-
- LTTNG_ASSERT(expression);
- LTTNG_ASSERT(writer);
- LTTNG_ASSERT(expression->type == LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD);
-
- name = lttng_event_expr_channel_context_field_get_name(expression);
- LTTNG_ASSERT(name);
-
- /* Open event expr channel context field element. */
- ret = mi_lttng_writer_open_element(writer,
- mi_lttng_element_event_expr_channel_context_field);
- if (ret) {
- goto mi_error;
- }
-
- /* Name. */
- ret = mi_lttng_writer_write_element_string(
- writer, config_element_name, name);
- if (ret) {
- goto mi_error;
- }
-
- /* Close event expr channel context field element. */
- ret = mi_lttng_writer_close_element(writer);
- if (ret) {
- goto mi_error;
- }
-
- ret_code = LTTNG_OK;
- goto end;
-
-mi_error:
- ret_code = LTTNG_ERR_MI_IO_FAIL;
-end:
- return ret_code;
-}
-
-static
-enum lttng_error_code lttng_event_expr_app_specific_context_field_mi_serialize(
- const struct lttng_event_expr *expression,
- struct mi_writer *writer)
-{
- int ret;
- enum lttng_error_code ret_code;
- const char *provider_name = NULL;
- const char *type_name = NULL;
-
- LTTNG_ASSERT(expression);
- LTTNG_ASSERT(writer);
- LTTNG_ASSERT(expression->type ==
- LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD);
-
- provider_name = lttng_event_expr_app_specific_context_field_get_provider_name(
- expression);
- LTTNG_ASSERT(provider_name);
-
- type_name = lttng_event_expr_app_specific_context_field_get_type_name(
- expression);
- LTTNG_ASSERT(provider_name);
-
- /* Open event expr app specific context field element. */
- ret = mi_lttng_writer_open_element(writer,
- mi_lttng_element_event_expr_app_specific_context_field);
- if (ret) {
- goto mi_error;
- }
-
- /* Provider name. */
- ret = mi_lttng_writer_write_element_string(writer,
- mi_lttng_element_event_expr_provider_name,
- provider_name);
- if (ret) {
- goto mi_error;
- }
-
- /* Type name. */
- ret = mi_lttng_writer_write_element_string(writer,
- mi_lttng_element_event_expr_type_name, type_name);
- if (ret) {
- goto mi_error;
- }
-
- /* Close event expr app specific context field element. */
- ret = mi_lttng_writer_close_element(writer);
- if (ret) {
- goto mi_error;
- }
-
- ret_code = LTTNG_OK;
- goto end;
-
-mi_error:
- ret_code = LTTNG_ERR_MI_IO_FAIL;
-end:
- return ret_code;
-}
-
-static
-enum lttng_error_code lttng_event_expr_array_field_element_mi_serialize(
- const struct lttng_event_expr *expression,
- struct mi_writer *writer)
-{
- int ret;
- enum lttng_error_code ret_code;
- enum lttng_event_expr_status status;
- const struct lttng_event_expr *parent_expr = NULL;
- unsigned int index;
-
- LTTNG_ASSERT(expression);
- LTTNG_ASSERT(writer);
- LTTNG_ASSERT(expression->type == LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT);
-
- status = lttng_event_expr_array_field_element_get_index(
- expression, &index);
- LTTNG_ASSERT(status == LTTNG_EVENT_EXPR_STATUS_OK);
-
- parent_expr = lttng_event_expr_array_field_element_get_parent_expr(
- expression);
- LTTNG_ASSERT(parent_expr != NULL);
-
- /* Open event expr array field element. */
- ret = mi_lttng_writer_open_element(writer,
- mi_lttng_element_event_expr_array_field_element);
- if (ret) {
- goto mi_error;
- }
-
- /* Index. */
- ret = mi_lttng_writer_write_element_unsigned_int(
- writer, mi_lttng_element_event_expr_index, index);
- if (ret) {
- goto mi_error;
- }
-
- /* Parent expression. */
- ret_code = lttng_event_expr_mi_serialize(parent_expr, writer);
- if (ret_code != LTTNG_OK) {
- goto end;
- }
-
- /* Close event expr array field element. */
- ret = mi_lttng_writer_close_element(writer);
- if (ret) {
- goto mi_error;
- }
-
- ret_code = LTTNG_OK;
- goto end;
-
-mi_error:
- ret_code = LTTNG_ERR_MI_IO_FAIL;
-end:
- return ret_code;
-}
-
-enum lttng_error_code lttng_event_expr_mi_serialize(
- const struct lttng_event_expr *expression,
- struct mi_writer *writer)
-{
- int ret;
- enum lttng_error_code ret_code;
-
- LTTNG_ASSERT(expression);
- LTTNG_ASSERT(writer);
-
- ret = mi_lttng_writer_open_element(writer, mi_lttng_element_event_expr);
- if (ret) {
- goto mi_error;
- }
-
- switch (expression->type) {
- case LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD:
- ret_code = lttng_event_expr_event_payload_field_mi_serialize(
- expression, writer);
- break;
- case LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD:
- ret_code = lttng_event_expr_channel_context_field_mi_serialize(
- expression, writer);
- break;
- case LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD:
- ret_code = lttng_event_expr_app_specific_context_field_mi_serialize(
- expression, writer);
- break;
- case LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT:
- ret_code = lttng_event_expr_array_field_element_mi_serialize(
- expression, writer);
- break;
- default:
- abort();
- }
-
- if (ret_code != LTTNG_OK) {
- goto end;
- }
-
- ret = mi_lttng_writer_close_element(writer);
- if (ret) {
- goto mi_error;
- }
-
- ret_code = LTTNG_OK;
- goto end;
-
-mi_error:
- ret_code = LTTNG_ERR_MI_IO_FAIL;
-
-end:
- return ret_code;
-}
projects / lttng-tools.git / blobdiff