+++ /dev/null
-/*
- * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
- *
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- */
-
-#include <lttng/condition/condition-internal.h>
-#include <lttng/condition/session-rotation-internal.h>
-#include <lttng/location-internal.h>
-#include <common/macros.h>
-#include <common/error.h>
-#include <assert.h>
-#include <stdbool.h>
-
-static
-bool lttng_condition_session_rotation_validate(
- const struct lttng_condition *condition);
-static
-int lttng_condition_session_rotation_serialize(
- const struct lttng_condition *condition,
- struct lttng_dynamic_buffer *buf);
-static
-bool lttng_condition_session_rotation_is_equal(const struct lttng_condition *_a,
- const struct lttng_condition *_b);
-static
-void lttng_condition_session_rotation_destroy(
- struct lttng_condition *condition);
-
-static const
-struct lttng_condition rotation_condition_template = {
- /* .type omitted; shall be set on creation. */
- .validate = lttng_condition_session_rotation_validate,
- .serialize = lttng_condition_session_rotation_serialize,
- .equal = lttng_condition_session_rotation_is_equal,
- .destroy = lttng_condition_session_rotation_destroy,
-};
-
-static
-int lttng_evaluation_session_rotation_serialize(
- const struct lttng_evaluation *evaluation,
- struct lttng_dynamic_buffer *buf);
-static
-void lttng_evaluation_session_rotation_destroy(
- struct lttng_evaluation *evaluation);
-
-static const
-struct lttng_evaluation rotation_evaluation_template = {
- /* .type omitted; shall be set on creation. */
- .serialize = lttng_evaluation_session_rotation_serialize,
- .destroy = lttng_evaluation_session_rotation_destroy,
-};
-
-static
-bool is_rotation_condition(const struct lttng_condition *condition)
-{
- enum lttng_condition_type type = lttng_condition_get_type(condition);
-
- return type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING ||
- type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED;
-}
-
-static
-bool is_rotation_evaluation(const struct lttng_evaluation *evaluation)
-{
- enum lttng_condition_type type = lttng_evaluation_get_type(evaluation);
-
- return type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING ||
- type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED;
-}
-
-static
-bool lttng_condition_session_rotation_validate(
- const struct lttng_condition *condition)
-{
- bool valid = false;
- struct lttng_condition_session_rotation *rotation;
-
- if (!condition) {
- goto end;
- }
-
- rotation = container_of(condition,
- struct lttng_condition_session_rotation, parent);
- if (!rotation->session_name) {
- ERR("Invalid session rotation condition: a target session name must be set.");
- goto end;
- }
-
- valid = true;
-end:
- return valid;
-}
-
-static
-int lttng_condition_session_rotation_serialize(
- const struct lttng_condition *condition,
- struct lttng_dynamic_buffer *buf)
-{
- int ret;
- size_t session_name_len;
- struct lttng_condition_session_rotation *rotation;
- struct lttng_condition_session_rotation_comm rotation_comm;
-
- if (!condition || !is_rotation_condition(condition)) {
- ret = -1;
- goto end;
- }
-
- DBG("Serializing session rotation condition");
- rotation = container_of(condition, struct lttng_condition_session_rotation,
- parent);
-
- session_name_len = strlen(rotation->session_name) + 1;
- if (session_name_len > LTTNG_NAME_MAX) {
- ret = -1;
- goto end;
- }
-
- rotation_comm.session_name_len = session_name_len;
- ret = lttng_dynamic_buffer_append(buf, &rotation_comm,
- sizeof(rotation_comm));
- if (ret) {
- goto end;
- }
- ret = lttng_dynamic_buffer_append(buf, rotation->session_name,
- session_name_len);
- if (ret) {
- goto end;
- }
-end:
- return ret;
-}
-
-static
-bool lttng_condition_session_rotation_is_equal(const struct lttng_condition *_a,
- const struct lttng_condition *_b)
-{
- bool is_equal = false;
- struct lttng_condition_session_rotation *a, *b;
-
- a = container_of(_a, struct lttng_condition_session_rotation, parent);
- b = container_of(_b, struct lttng_condition_session_rotation, parent);
-
- /* Both session names must be set or both must be unset. */
- if ((a->session_name && !b->session_name) ||
- (!a->session_name && b->session_name)) {
- WARN("Comparing session rotation conditions with uninitialized session names.");
- goto end;
- }
-
- if (a->session_name && b->session_name &&
- strcmp(a->session_name, b->session_name)) {
- goto end;
- }
-
- is_equal = true;
-end:
- return is_equal;
-}
-
-static
-void lttng_condition_session_rotation_destroy(
- struct lttng_condition *condition)
-{
- struct lttng_condition_session_rotation *rotation;
-
- rotation = container_of(condition,
- struct lttng_condition_session_rotation, parent);
-
- free(rotation->session_name);
- free(rotation);
-}
-
-static
-struct lttng_condition *lttng_condition_session_rotation_create(
- enum lttng_condition_type type)
-{
- struct lttng_condition_session_rotation *condition;
-
- condition = zmalloc(sizeof(struct lttng_condition_session_rotation));
- if (!condition) {
- return NULL;
- }
-
- memcpy(&condition->parent, &rotation_condition_template,
- sizeof(condition->parent));
- lttng_condition_init(&condition->parent, type);
- return &condition->parent;
-}
-
-struct lttng_condition *lttng_condition_session_rotation_ongoing_create(void)
-{
- return lttng_condition_session_rotation_create(
- LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING);
-}
-
-struct lttng_condition *lttng_condition_session_rotation_completed_create(void)
-{
- return lttng_condition_session_rotation_create(
- LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED);
-}
-
-static
-ssize_t init_condition_from_buffer(struct lttng_condition *condition,
- const struct lttng_buffer_view *src_view)
-{
- ssize_t ret, condition_size;
- enum lttng_condition_status status;
- const struct lttng_condition_session_rotation_comm *condition_comm;
- const char *session_name;
- struct lttng_buffer_view name_view;
-
- if (src_view->size < sizeof(*condition_comm)) {
- ERR("Failed to initialize from malformed condition buffer: buffer too short to contain header");
- ret = -1;
- goto end;
- }
-
- condition_comm = (const struct lttng_condition_session_rotation_comm *) src_view->data;
- name_view = lttng_buffer_view_from_view(src_view,
- sizeof(*condition_comm), -1);
-
- if (condition_comm->session_name_len > LTTNG_NAME_MAX) {
- ERR("Failed to initialize from malformed condition buffer: name exceeds LTTNG_MAX_NAME");
- ret = -1;
- goto end;
- }
-
- if (name_view.size < condition_comm->session_name_len) {
- ERR("Failed to initialize from malformed condition buffer: buffer too short to contain session name");
- ret = -1;
- goto end;
- }
-
- session_name = name_view.data;
- if (*(session_name + condition_comm->session_name_len - 1) != '\0') {
- ERR("Malformed session name encountered in condition buffer");
- ret = -1;
- goto end;
- }
-
- status = lttng_condition_session_rotation_set_session_name(condition,
- session_name);
- if (status != LTTNG_CONDITION_STATUS_OK) {
- ERR("Failed to set buffer consumed session name");
- ret = -1;
- goto end;
- }
-
- if (!lttng_condition_validate(condition)) {
- ret = -1;
- goto end;
- }
-
- condition_size = sizeof(*condition_comm) +
- (ssize_t) condition_comm->session_name_len;
- ret = condition_size;
-end:
- return ret;
-}
-
-static
-ssize_t lttng_condition_session_rotation_create_from_buffer(
- const struct lttng_buffer_view *view,
- struct lttng_condition **_condition,
- enum lttng_condition_type type)
-{
- ssize_t ret;
- struct lttng_condition *condition = NULL;
-
- switch (type) {
- case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
- condition = lttng_condition_session_rotation_ongoing_create();
- break;
- case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
- condition = lttng_condition_session_rotation_completed_create();
- break;
- default:
- ret = -1;
- goto error;
- }
-
- if (!_condition || !condition) {
- ret = -1;
- goto error;
- }
-
- ret = init_condition_from_buffer(condition, view);
- if (ret < 0) {
- goto error;
- }
-
- *_condition = condition;
- return ret;
-error:
- lttng_condition_destroy(condition);
- return ret;
-}
-
-LTTNG_HIDDEN
-ssize_t lttng_condition_session_rotation_ongoing_create_from_buffer(
- const struct lttng_buffer_view *view,
- struct lttng_condition **condition)
-{
- return lttng_condition_session_rotation_create_from_buffer(view,
- condition,
- LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING);
-}
-
-LTTNG_HIDDEN
-ssize_t lttng_condition_session_rotation_completed_create_from_buffer(
- const struct lttng_buffer_view *view,
- struct lttng_condition **condition)
-{
- return lttng_condition_session_rotation_create_from_buffer(view,
- condition,
- LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED);
-}
-
-static
-struct lttng_evaluation *lttng_evaluation_session_rotation_create(
- enum lttng_condition_type type, uint64_t id,
- struct lttng_trace_archive_location *location)
-{
- struct lttng_evaluation_session_rotation *evaluation;
-
- evaluation = zmalloc(sizeof(struct lttng_evaluation_session_rotation));
- if (!evaluation) {
- return NULL;
- }
-
- memcpy(&evaluation->parent, &rotation_evaluation_template,
- sizeof(evaluation->parent));
- lttng_evaluation_init(&evaluation->parent, type);
- evaluation->id = id;
- evaluation->location = location;
- return &evaluation->parent;
-}
-
-static
-ssize_t create_evaluation_from_buffer(
- enum lttng_condition_type type,
- const struct lttng_buffer_view *view,
- struct lttng_evaluation **_evaluation)
-{
- ssize_t ret, size;
- struct lttng_evaluation *evaluation = NULL;
- struct lttng_trace_archive_location *location = NULL;
- const struct lttng_evaluation_session_rotation_comm *comm =
- (const struct lttng_evaluation_session_rotation_comm *) view->data;
- struct lttng_buffer_view location_view;
-
- if (view->size < sizeof(*comm)) {
- goto error;
- }
-
- size = sizeof(*comm);
- if (comm->has_location) {
- location_view = lttng_buffer_view_from_view(view, sizeof(*comm),
- -1);
- if (!location_view.data) {
- goto error;
- }
-
- ret = lttng_trace_archive_location_create_from_buffer(
- &location_view, &location);
- if (ret < 0) {
- goto error;
- }
- size += ret;
- }
-
- evaluation = lttng_evaluation_session_rotation_create(type, comm->id,
- location);
- if (!evaluation) {
- goto error;
- }
-
- ret = size;
- *_evaluation = evaluation;
- return ret;
-error:
- lttng_trace_archive_location_destroy(location);
- evaluation = NULL;
- return -1;
-}
-
-static
-ssize_t lttng_evaluation_session_rotation_create_from_buffer(
- enum lttng_condition_type type,
- const struct lttng_buffer_view *view,
- struct lttng_evaluation **_evaluation)
-{
- ssize_t ret;
- struct lttng_evaluation *evaluation = NULL;
-
- if (!_evaluation) {
- ret = -1;
- goto error;
- }
-
- ret = create_evaluation_from_buffer(type, view, &evaluation);
- if (ret < 0) {
- goto error;
- }
-
- *_evaluation = evaluation;
- return ret;
-error:
- lttng_evaluation_destroy(evaluation);
- return ret;
-}
-
-LTTNG_HIDDEN
-ssize_t lttng_evaluation_session_rotation_ongoing_create_from_buffer(
- const struct lttng_buffer_view *view,
- struct lttng_evaluation **evaluation)
-{
- return lttng_evaluation_session_rotation_create_from_buffer(
- LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING,
- view, evaluation);
-}
-
-LTTNG_HIDDEN
-ssize_t lttng_evaluation_session_rotation_completed_create_from_buffer(
- const struct lttng_buffer_view *view,
- struct lttng_evaluation **evaluation)
-{
- return lttng_evaluation_session_rotation_create_from_buffer(
- LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED,
- view, evaluation);
-}
-
-LTTNG_HIDDEN
-struct lttng_evaluation *lttng_evaluation_session_rotation_ongoing_create(
- uint64_t id)
-{
- return lttng_evaluation_session_rotation_create(
- LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING, id,
- NULL);
-}
-
-LTTNG_HIDDEN
-struct lttng_evaluation *lttng_evaluation_session_rotation_completed_create(
- uint64_t id, struct lttng_trace_archive_location *location)
-{
- return lttng_evaluation_session_rotation_create(
- LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED, id,
- location);
-}
-
-enum lttng_condition_status
-lttng_condition_session_rotation_get_session_name(
- const struct lttng_condition *condition,
- const char **session_name)
-{
- struct lttng_condition_session_rotation *rotation;
- enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK;
-
- if (!condition || !is_rotation_condition(condition) || !session_name) {
- status = LTTNG_CONDITION_STATUS_INVALID;
- goto end;
- }
-
- rotation = container_of(condition, struct lttng_condition_session_rotation,
- parent);
- if (!rotation->session_name) {
- status = LTTNG_CONDITION_STATUS_UNSET;
- goto end;
- }
- *session_name = rotation->session_name;
-end:
- return status;
-}
-
-enum lttng_condition_status
-lttng_condition_session_rotation_set_session_name(
- struct lttng_condition *condition, const char *session_name)
-{
- char *session_name_copy;
- struct lttng_condition_session_rotation *rotation;
- enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK;
-
- if (!condition || !is_rotation_condition(condition) ||
- !session_name || strlen(session_name) == 0) {
- status = LTTNG_CONDITION_STATUS_INVALID;
- goto end;
- }
-
- rotation = container_of(condition,
- struct lttng_condition_session_rotation, parent);
- session_name_copy = strdup(session_name);
- if (!session_name_copy) {
- status = LTTNG_CONDITION_STATUS_ERROR;
- goto end;
- }
-
- free(rotation->session_name);
- rotation->session_name = session_name_copy;
-end:
- return status;
-}
-
-static
-int lttng_evaluation_session_rotation_serialize(
- const struct lttng_evaluation *evaluation,
- struct lttng_dynamic_buffer *buf)
-{
- int ret;
- struct lttng_evaluation_session_rotation *rotation;
- struct lttng_evaluation_session_rotation_comm comm = { 0 };
-
- rotation = container_of(evaluation,
- struct lttng_evaluation_session_rotation, parent);
- comm.id = rotation->id;
- comm.has_location = !!rotation->location;
- ret = lttng_dynamic_buffer_append(buf, &comm, sizeof(comm));
- if (ret) {
- goto end;
- }
- if (!rotation->location) {
- goto end;
- }
- ret = lttng_trace_archive_location_serialize(rotation->location,
- buf);
-end:
- return ret;
-}
-
-static
-void lttng_evaluation_session_rotation_destroy(
- struct lttng_evaluation *evaluation)
-{
- struct lttng_evaluation_session_rotation *rotation;
-
- rotation = container_of(evaluation,
- struct lttng_evaluation_session_rotation, parent);
- lttng_trace_archive_location_destroy(rotation->location);
- free(rotation);
-}
-
-enum lttng_evaluation_status
-lttng_evaluation_session_rotation_get_id(
- const struct lttng_evaluation *evaluation, uint64_t *id)
-{
- const struct lttng_evaluation_session_rotation *rotation;
- enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK;
-
- if (!evaluation || !id || !is_rotation_evaluation(evaluation)) {
- status = LTTNG_EVALUATION_STATUS_INVALID;
- goto end;
- }
-
- rotation = container_of(evaluation,
- struct lttng_evaluation_session_rotation, parent);
- *id = rotation->id;
-end:
- return status;
-}
-
-enum lttng_evaluation_status
-lttng_evaluation_session_rotation_completed_get_location(
- const struct lttng_evaluation *evaluation,
- const struct lttng_trace_archive_location **location)
-{
- const struct lttng_evaluation_session_rotation *rotation;
- enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK;
-
- if (!evaluation || !location ||
- evaluation->type != LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED) {
- status = LTTNG_EVALUATION_STATUS_INVALID;
- goto end;
- }
-
- rotation = container_of(evaluation,
- struct lttng_evaluation_session_rotation, parent);
- *location = rotation->location;
-end:
- return status;
-}
projects / lttng-tools.git / blobdiff