+++ /dev/null
-/*
- * Copyright (C) 2021 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
- *
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- */
-
-#include <common/buffer-view.h>
-#include <common/dynamic-buffer.h>
-#include <common/error.h>
-#include <common/macros.h>
-#include <common/mi-lttng.h>
-#include <common/payload-view.h>
-#include <common/payload.h>
-#include <limits.h>
-#include <lttng/action/rate-policy-internal.h>
-#include <lttng/action/rate-policy.h>
-#include <stdbool.h>
-#include <sys/types.h>
-
-#define IS_EVERY_N_RATE_POLICY(policy) \
- (lttng_rate_policy_get_type(policy) == LTTNG_RATE_POLICY_TYPE_EVERY_N)
-
-#define IS_ONCE_AFTER_N_RATE_POLICY(policy) \
- (lttng_rate_policy_get_type(policy) == \
- LTTNG_RATE_POLICY_TYPE_ONCE_AFTER_N)
-
-typedef void (*rate_policy_destroy_cb)(struct lttng_rate_policy *rate_policy);
-typedef int (*rate_policy_serialize_cb)(struct lttng_rate_policy *rate_policy,
- struct lttng_payload *payload);
-typedef bool (*rate_policy_equal_cb)(const struct lttng_rate_policy *a,
- const struct lttng_rate_policy *b);
-typedef ssize_t (*rate_policy_create_from_payload_cb)(
- struct lttng_payload_view *view,
- struct lttng_rate_policy **rate_policy);
-typedef struct lttng_rate_policy *(*rate_policy_copy_cb)(
- const struct lttng_rate_policy *source);
-typedef enum lttng_error_code (*rate_policy_mi_serialize_cb)(
- const struct lttng_rate_policy *rate_policy,
- struct mi_writer *writer);
-
-struct lttng_rate_policy {
- enum lttng_rate_policy_type type;
- rate_policy_serialize_cb serialize;
- rate_policy_equal_cb equal;
- rate_policy_destroy_cb destroy;
- rate_policy_copy_cb copy;
- rate_policy_mi_serialize_cb mi_serialize;
-};
-
-struct lttng_rate_policy_every_n {
- struct lttng_rate_policy parent;
- uint64_t interval;
-};
-
-struct lttng_rate_policy_once_after_n {
- struct lttng_rate_policy parent;
- uint64_t threshold;
-};
-
-struct lttng_rate_policy_comm {
- /* enum lttng_rate_policy_type */
- int8_t rate_policy_type;
-} LTTNG_PACKED;
-
-struct lttng_rate_policy_once_after_n_comm {
- uint64_t threshold;
-} LTTNG_PACKED;
-
-struct lttng_rate_policy_every_n_comm {
- uint64_t interval;
-} LTTNG_PACKED;
-
-/* Forward declaration. */
-static void lttng_rate_policy_init(struct lttng_rate_policy *rate_policy,
- enum lttng_rate_policy_type type,
- rate_policy_serialize_cb serialize,
- rate_policy_equal_cb equal,
- rate_policy_destroy_cb destroy,
- rate_policy_copy_cb copy,
- rate_policy_mi_serialize_cb mi);
-
-/* Forward declaration. Every n */
-static bool lttng_rate_policy_every_n_should_execute(
- const struct lttng_rate_policy *policy, uint64_t counter);
-
-/* Forward declaration. Once after N */
-static bool lttng_rate_policy_once_after_n_should_execute(
- const struct lttng_rate_policy *policy, uint64_t counter);
-
-const char *lttng_rate_policy_type_string(
- enum lttng_rate_policy_type rate_policy_type)
-{
- switch (rate_policy_type) {
- case LTTNG_RATE_POLICY_TYPE_EVERY_N:
- return "EVERY-N";
- case LTTNG_RATE_POLICY_TYPE_ONCE_AFTER_N:
- return "ONCE-AFTER-N";
- default:
- return "???";
- }
-}
-
-enum lttng_rate_policy_type lttng_rate_policy_get_type(
- const struct lttng_rate_policy *policy)
-{
- return policy ? policy->type : LTTNG_RATE_POLICY_TYPE_UNKNOWN;
-}
-
-void lttng_rate_policy_init(struct lttng_rate_policy *rate_policy,
- enum lttng_rate_policy_type type,
- rate_policy_serialize_cb serialize,
- rate_policy_equal_cb equal,
- rate_policy_destroy_cb destroy,
- rate_policy_copy_cb copy,
- rate_policy_mi_serialize_cb mi)
-{
- rate_policy->type = type;
- rate_policy->serialize = serialize;
- rate_policy->equal = equal;
- rate_policy->destroy = destroy;
- rate_policy->copy = copy;
- rate_policy->mi_serialize = mi;
-}
-
-void lttng_rate_policy_destroy(struct lttng_rate_policy *rate_policy)
-{
- if (!rate_policy) {
- return;
- }
-
- rate_policy->destroy(rate_policy);
-}
-
-int lttng_rate_policy_serialize(struct lttng_rate_policy *rate_policy,
- struct lttng_payload *payload)
-{
- int ret;
- struct lttng_rate_policy_comm rate_policy_comm = {
- .rate_policy_type = (int8_t) rate_policy->type,
- };
-
- ret = lttng_dynamic_buffer_append(&payload->buffer, &rate_policy_comm,
- sizeof(rate_policy_comm));
- if (ret) {
- goto end;
- }
-
- ret = rate_policy->serialize(rate_policy, payload);
- if (ret) {
- goto end;
- }
-end:
- return ret;
-}
-
-static ssize_t lttng_rate_policy_once_after_n_create_from_payload(
- struct lttng_payload_view *view,
- struct lttng_rate_policy **rate_policy)
-{
- ssize_t consumed_len = -1;
- struct lttng_rate_policy *policy = NULL;
- const struct lttng_rate_policy_once_after_n_comm *comm;
- const struct lttng_payload_view comm_view =
- lttng_payload_view_from_view(view, 0, sizeof(*comm));
-
- if (!view || !rate_policy) {
- consumed_len = -1;
- goto end;
- }
-
- if (!lttng_payload_view_is_valid(&comm_view)) {
- /* Payload not large enough to contain the header. */
- consumed_len = -1;
- goto end;
- }
-
- comm = (const struct lttng_rate_policy_once_after_n_comm *)
- comm_view.buffer.data;
-
- policy = lttng_rate_policy_once_after_n_create(comm->threshold);
- if (policy == NULL) {
- consumed_len = -1;
- goto end;
- }
-
- *rate_policy = policy;
- consumed_len = sizeof(*comm);
-
-end:
- return consumed_len;
-}
-
-static ssize_t lttng_rate_policy_every_n_create_from_payload(
- struct lttng_payload_view *view,
- struct lttng_rate_policy **rate_policy)
-{
- ssize_t consumed_len = -1;
- struct lttng_rate_policy *policy = NULL;
- const struct lttng_rate_policy_every_n_comm *comm;
- const struct lttng_payload_view comm_view =
- lttng_payload_view_from_view(view, 0, sizeof(*comm));
-
- if (!view || !rate_policy) {
- consumed_len = -1;
- goto end;
- }
-
- if (!lttng_payload_view_is_valid(&comm_view)) {
- /* Payload not large enough to contain the header. */
- consumed_len = -1;
- goto end;
- }
-
- comm = (const struct lttng_rate_policy_every_n_comm *)
- comm_view.buffer.data;
-
- policy = lttng_rate_policy_every_n_create(comm->interval);
- if (policy == NULL) {
- consumed_len = -1;
- goto end;
- }
-
- *rate_policy = policy;
- consumed_len = sizeof(*comm);
-
-end:
- return consumed_len;
-}
-
-ssize_t lttng_rate_policy_create_from_payload(struct lttng_payload_view *view,
- struct lttng_rate_policy **rate_policy)
-{
- ssize_t consumed_len, specific_rate_policy_consumed_len;
- rate_policy_create_from_payload_cb create_from_payload_cb;
- const struct lttng_rate_policy_comm *rate_policy_comm;
- const struct lttng_payload_view rate_policy_comm_view =
- lttng_payload_view_from_view(
- view, 0, sizeof(*rate_policy_comm));
-
- if (!view || !rate_policy) {
- consumed_len = -1;
- goto end;
- }
-
- if (!lttng_payload_view_is_valid(&rate_policy_comm_view)) {
- /* Payload not large enough to contain the header. */
- consumed_len = -1;
- goto end;
- }
-
- rate_policy_comm = (const struct lttng_rate_policy_comm *)
- rate_policy_comm_view.buffer.data;
-
- DBG("Create rate_policy from payload: rate-policy-type=%s",
- lttng_rate_policy_type_string(
- rate_policy_comm->rate_policy_type));
-
- switch (rate_policy_comm->rate_policy_type) {
- case LTTNG_RATE_POLICY_TYPE_EVERY_N:
- create_from_payload_cb =
- lttng_rate_policy_every_n_create_from_payload;
- break;
- case LTTNG_RATE_POLICY_TYPE_ONCE_AFTER_N:
- create_from_payload_cb =
- lttng_rate_policy_once_after_n_create_from_payload;
- break;
- default:
- ERR("Failed to create rate-policy from payload, unhandled rate-policy type: rate-policy-type=%u (%s)",
- rate_policy_comm->rate_policy_type,
- lttng_rate_policy_type_string(
- rate_policy_comm->rate_policy_type));
- consumed_len = -1;
- goto end;
- }
-
- {
- /* Create buffer view for the rate_policy-type-specific data.
- */
- struct lttng_payload_view specific_rate_policy_view =
- lttng_payload_view_from_view(view,
- sizeof(struct lttng_rate_policy_comm),
- -1);
-
- specific_rate_policy_consumed_len = create_from_payload_cb(
- &specific_rate_policy_view, rate_policy);
- }
- if (specific_rate_policy_consumed_len < 0) {
- ERR("Failed to create specific rate_policy from buffer.");
- consumed_len = -1;
- goto end;
- }
-
- LTTNG_ASSERT(*rate_policy);
-
- consumed_len = sizeof(struct lttng_rate_policy_comm) +
- specific_rate_policy_consumed_len;
-
-end:
- return consumed_len;
-}
-
-bool lttng_rate_policy_is_equal(const struct lttng_rate_policy *a,
- const struct lttng_rate_policy *b)
-{
- bool is_equal = false;
-
- if (!a || !b) {
- goto end;
- }
-
- if (a->type != b->type) {
- goto end;
- }
-
- if (a == b) {
- is_equal = true;
- goto end;
- }
-
- LTTNG_ASSERT(a->equal);
- is_equal = a->equal(a, b);
-end:
- return is_equal;
-}
-
-bool lttng_rate_policy_should_execute(
- const struct lttng_rate_policy *policy, uint64_t counter)
-{
- switch (policy->type) {
- case LTTNG_RATE_POLICY_TYPE_EVERY_N:
- return lttng_rate_policy_every_n_should_execute(
- policy, counter);
- case LTTNG_RATE_POLICY_TYPE_ONCE_AFTER_N:
- return lttng_rate_policy_once_after_n_should_execute(
- policy, counter);
- default:
- abort();
- break;
- }
-}
-
-/* Every N */
-static struct lttng_rate_policy_every_n *rate_policy_every_n_from_rate_policy(
- struct lttng_rate_policy *policy)
-{
- LTTNG_ASSERT(policy);
-
- return container_of(policy, struct lttng_rate_policy_every_n, parent);
-}
-
-static const struct lttng_rate_policy_every_n *
-rate_policy_every_n_from_rate_policy_const(
- const struct lttng_rate_policy *policy)
-{
- LTTNG_ASSERT(policy);
-
- return container_of(policy, struct lttng_rate_policy_every_n, parent);
-}
-
-static int lttng_rate_policy_every_n_serialize(
- struct lttng_rate_policy *policy, struct lttng_payload *payload)
-{
- int ret;
-
- struct lttng_rate_policy_every_n *every_n_policy;
- struct lttng_rate_policy_every_n_comm comm = {};
-
- LTTNG_ASSERT(policy);
- LTTNG_ASSERT(payload);
-
- every_n_policy = rate_policy_every_n_from_rate_policy(policy);
- comm.interval = every_n_policy->interval;
-
- ret = lttng_dynamic_buffer_append(
- &payload->buffer, &comm, sizeof(comm));
- return ret;
-}
-
-static bool lttng_rate_policy_every_n_is_equal(
- const struct lttng_rate_policy *_a,
- const struct lttng_rate_policy *_b)
-{
- bool is_equal = false;
- const struct lttng_rate_policy_every_n *a, *b;
-
- a = rate_policy_every_n_from_rate_policy_const(_a);
- b = rate_policy_every_n_from_rate_policy_const(_b);
-
- if (a->interval != b->interval) {
- goto end;
- }
-
- is_equal = true;
-
-end:
- return is_equal;
-}
-
-static void lttng_rate_policy_every_n_destroy(struct lttng_rate_policy *policy)
-{
- struct lttng_rate_policy_every_n *every_n_policy;
-
- if (!policy) {
- goto end;
- }
-
- every_n_policy = rate_policy_every_n_from_rate_policy(policy);
-
- free(every_n_policy);
-
-end:
- return;
-}
-
-static struct lttng_rate_policy *lttng_rate_policy_every_n_copy(
- const struct lttng_rate_policy *source)
-{
- struct lttng_rate_policy *copy = NULL;
- const struct lttng_rate_policy_every_n *every_n_policy;
-
- if (!source) {
- goto end;
- }
-
- every_n_policy = rate_policy_every_n_from_rate_policy_const(source);
- copy = lttng_rate_policy_every_n_create(every_n_policy->interval);
-
-end:
- return copy;
-}
-
-static enum lttng_error_code lttng_rate_policy_every_n_mi_serialize(
- const struct lttng_rate_policy *rate_policy,
- struct mi_writer *writer)
-{
- int ret;
- enum lttng_error_code ret_code;
- const struct lttng_rate_policy_every_n *every_n_policy = NULL;
-
- LTTNG_ASSERT(rate_policy);
- LTTNG_ASSERT(IS_EVERY_N_RATE_POLICY(rate_policy));
- LTTNG_ASSERT(writer);
-
- every_n_policy = rate_policy_every_n_from_rate_policy_const(
- rate_policy);
-
- /* Open rate_policy_every_n element. */
- ret = mi_lttng_writer_open_element(
- writer, mi_lttng_element_rate_policy_every_n);
- if (ret) {
- goto mi_error;
- }
-
- /* Interval. */
- ret = mi_lttng_writer_write_element_unsigned_int(writer,
- mi_lttng_element_rate_policy_every_n_interval,
- every_n_policy->interval);
- if (ret) {
- goto mi_error;
- }
-
- /* Close rate_policy_every_n 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;
-}
-
-struct lttng_rate_policy *lttng_rate_policy_every_n_create(uint64_t interval)
-{
- struct lttng_rate_policy_every_n *policy = NULL;
- struct lttng_rate_policy *_policy = NULL;
-
- if (interval == 0) {
- /*
- * An interval of 0 is invalid since it would never be fired.
- */
- goto end;
- }
-
- policy = zmalloc(sizeof(struct lttng_rate_policy_every_n));
- if (!policy) {
- goto end;
- }
-
- lttng_rate_policy_init(&policy->parent, LTTNG_RATE_POLICY_TYPE_EVERY_N,
- lttng_rate_policy_every_n_serialize,
- lttng_rate_policy_every_n_is_equal,
- lttng_rate_policy_every_n_destroy,
- lttng_rate_policy_every_n_copy,
- lttng_rate_policy_every_n_mi_serialize);
-
- policy->interval = interval;
-
- _policy = &policy->parent;
- policy = NULL;
-
-end:
- free(policy);
- return _policy;
-}
-
-enum lttng_rate_policy_status lttng_rate_policy_every_n_get_interval(
- const struct lttng_rate_policy *policy, uint64_t *interval)
-{
- const struct lttng_rate_policy_every_n *every_n_policy;
- enum lttng_rate_policy_status status;
-
- if (!policy || !IS_EVERY_N_RATE_POLICY(policy) || !interval) {
- status = LTTNG_RATE_POLICY_STATUS_INVALID;
- goto end;
- }
-
- every_n_policy = rate_policy_every_n_from_rate_policy_const(policy);
- *interval = every_n_policy->interval;
- status = LTTNG_RATE_POLICY_STATUS_OK;
-end:
-
- return status;
-}
-
-static bool lttng_rate_policy_every_n_should_execute(
- const struct lttng_rate_policy *policy, uint64_t counter)
-{
- const struct lttng_rate_policy_every_n *every_n_policy;
- LTTNG_ASSERT(policy);
- bool execute = false;
-
- every_n_policy = rate_policy_every_n_from_rate_policy_const(policy);
-
- if (every_n_policy->interval == 0) {
- abort();
- }
-
- execute = (counter % every_n_policy->interval) == 0;
-
- DBG("Policy every N = %" PRIu64
- ": execution %s. Execution count: %" PRIu64,
- every_n_policy->interval,
- execute ? "accepted" : "denied", counter);
-
- return execute;
-}
-
-/* Once after N */
-
-static struct lttng_rate_policy_once_after_n *
-rate_policy_once_after_n_from_rate_policy(struct lttng_rate_policy *policy)
-{
- LTTNG_ASSERT(policy);
-
- return container_of(
- policy, struct lttng_rate_policy_once_after_n, parent);
-}
-
-static const struct lttng_rate_policy_once_after_n *
-rate_policy_once_after_n_from_rate_policy_const(
- const struct lttng_rate_policy *policy)
-{
- LTTNG_ASSERT(policy);
-
- return container_of(
- policy, struct lttng_rate_policy_once_after_n, parent);
-}
-static int lttng_rate_policy_once_after_n_serialize(
- struct lttng_rate_policy *policy, struct lttng_payload *payload)
-{
- int ret;
-
- struct lttng_rate_policy_once_after_n *once_after_n_policy;
- struct lttng_rate_policy_once_after_n_comm comm = {};
-
- LTTNG_ASSERT(policy);
- LTTNG_ASSERT(payload);
-
- once_after_n_policy = rate_policy_once_after_n_from_rate_policy(policy);
- comm.threshold = once_after_n_policy->threshold;
-
- ret = lttng_dynamic_buffer_append(
- &payload->buffer, &comm, sizeof(comm));
- return ret;
-}
-
-static bool lttng_rate_policy_once_after_n_is_equal(
- const struct lttng_rate_policy *_a,
- const struct lttng_rate_policy *_b)
-{
- bool is_equal = false;
- const struct lttng_rate_policy_once_after_n *a, *b;
-
- a = rate_policy_once_after_n_from_rate_policy_const(_a);
- b = rate_policy_once_after_n_from_rate_policy_const(_b);
-
- if (a->threshold != b->threshold) {
- goto end;
- }
-
- is_equal = true;
-
-end:
- return is_equal;
-}
-
-static void lttng_rate_policy_once_after_n_destroy(
- struct lttng_rate_policy *policy)
-{
- struct lttng_rate_policy_once_after_n *once_after_n_policy;
-
- if (!policy) {
- goto end;
- }
-
- once_after_n_policy = rate_policy_once_after_n_from_rate_policy(policy);
-
- free(once_after_n_policy);
-
-end:
- return;
-}
-
-static struct lttng_rate_policy *lttng_rate_policy_once_after_n_copy(
- const struct lttng_rate_policy *source)
-{
- struct lttng_rate_policy *copy = NULL;
- const struct lttng_rate_policy_once_after_n *once_after_n_policy;
-
- if (!source) {
- goto end;
- }
-
- once_after_n_policy =
- rate_policy_once_after_n_from_rate_policy_const(source);
- copy = lttng_rate_policy_once_after_n_create(
- once_after_n_policy->threshold);
-
-end:
- return copy;
-}
-
-static enum lttng_error_code lttng_rate_policy_once_after_n_mi_serialize(
- const struct lttng_rate_policy *rate_policy,
- struct mi_writer *writer)
-{
- int ret;
- enum lttng_error_code ret_code;
- const struct lttng_rate_policy_once_after_n *once_after_n_policy = NULL;
-
- LTTNG_ASSERT(rate_policy);
- LTTNG_ASSERT(IS_ONCE_AFTER_N_RATE_POLICY(rate_policy));
- LTTNG_ASSERT(writer);
-
- once_after_n_policy = rate_policy_once_after_n_from_rate_policy_const(
- rate_policy);
-
- /* Open rate_policy_once_after_n. */
- ret = mi_lttng_writer_open_element(
- writer, mi_lttng_element_rate_policy_once_after_n);
- if (ret) {
- goto mi_error;
- }
-
- /* Threshold. */
- ret = mi_lttng_writer_write_element_unsigned_int(writer,
- mi_lttng_element_rate_policy_once_after_n_threshold,
- once_after_n_policy->threshold);
- if (ret) {
- goto mi_error;
- }
-
- /* Close rate_policy_once_after_n 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;
-}
-
-struct lttng_rate_policy *lttng_rate_policy_once_after_n_create(
- uint64_t threshold)
-{
- struct lttng_rate_policy_once_after_n *policy = NULL;
- struct lttng_rate_policy *_policy = NULL;
-
- if (threshold == 0) {
- /* threshold is expected to be > 0 */
- goto end;
- }
-
- policy = zmalloc(sizeof(struct lttng_rate_policy_once_after_n));
- if (!policy) {
- goto end;
- }
-
- lttng_rate_policy_init(&policy->parent,
- LTTNG_RATE_POLICY_TYPE_ONCE_AFTER_N,
- lttng_rate_policy_once_after_n_serialize,
- lttng_rate_policy_once_after_n_is_equal,
- lttng_rate_policy_once_after_n_destroy,
- lttng_rate_policy_once_after_n_copy,
- lttng_rate_policy_once_after_n_mi_serialize);
-
- policy->threshold = threshold;
-
- _policy = &policy->parent;
- policy = NULL;
-
-end:
- free(policy);
- return _policy;
-}
-
-enum lttng_rate_policy_status lttng_rate_policy_once_after_n_get_threshold(
- const struct lttng_rate_policy *policy, uint64_t *threshold)
-{
- const struct lttng_rate_policy_once_after_n *once_after_n_policy;
- enum lttng_rate_policy_status status;
-
- if (!policy || !IS_ONCE_AFTER_N_RATE_POLICY(policy) || !threshold) {
- status = LTTNG_RATE_POLICY_STATUS_INVALID;
- goto end;
- }
-
- once_after_n_policy =
- rate_policy_once_after_n_from_rate_policy_const(policy);
- *threshold = once_after_n_policy->threshold;
- status = LTTNG_RATE_POLICY_STATUS_OK;
-end:
-
- return status;
-}
-
-struct lttng_rate_policy *lttng_rate_policy_copy(
- const struct lttng_rate_policy *source)
-{
- LTTNG_ASSERT(source->copy);
- return source->copy(source);
-}
-
-static bool lttng_rate_policy_once_after_n_should_execute(
- const struct lttng_rate_policy *policy, uint64_t counter)
-{
- const struct lttng_rate_policy_once_after_n *once_after_n_policy;
- bool execute = false;
- LTTNG_ASSERT(policy);
-
- once_after_n_policy =
- rate_policy_once_after_n_from_rate_policy_const(policy);
-
- execute = counter == once_after_n_policy->threshold;
-
- DBG("Policy once after N = %" PRIu64
- ": execution %s. Execution count: %" PRIu64,
- once_after_n_policy->threshold,
- execute ? "accepted" : "denied", counter);
-
- return counter == once_after_n_policy->threshold;
-}
-
-enum lttng_error_code lttng_rate_policy_mi_serialize(
- const struct lttng_rate_policy *rate_policy,
- struct mi_writer *writer)
-{
- int ret;
- enum lttng_error_code ret_code;
-
- LTTNG_ASSERT(rate_policy);
- LTTNG_ASSERT(writer);
- LTTNG_ASSERT(rate_policy->mi_serialize);
-
- /* Open rate policy element. */
- ret = mi_lttng_writer_open_element(
- writer, mi_lttng_element_rate_policy);
- if (ret) {
- goto mi_error;
- }
-
- /* Serialize underlying rate policy. */
- ret_code = rate_policy->mi_serialize(rate_policy, writer);
- if (ret_code != LTTNG_OK) {
- goto end;
- }
-
- /* Close rate policy 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;
-}
projects / lttng-tools.git / blobdiff