--- /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_payload *payload);
+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_payload *payload);
+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_payload *payload)
+{
+ 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(&payload->buffer, &rotation_comm,
+ sizeof(rotation_comm));
+ if (ret) {
+ goto end;
+ }
+ ret = lttng_dynamic_buffer_append(&payload->buffer,
+ 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_payload(struct lttng_condition *condition,
+ struct lttng_payload_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->buffer.size < sizeof(*condition_comm)) {
+ ERR("Failed to initialize from malformed condition buffer: buffer too short to contain header");
+ ret = -1;
+ goto end;
+ }
+
+ condition_comm = (typeof(condition_comm)) src_view->buffer.data;
+ name_view = lttng_buffer_view_from_view(&src_view->buffer,
+ 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_payload(
+ struct lttng_payload_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_payload(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_payload(
+ struct lttng_payload_view *view,
+ struct lttng_condition **condition)
+{
+ return lttng_condition_session_rotation_create_from_payload(view,
+ condition,
+ LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING);
+}
+
+LTTNG_HIDDEN
+ssize_t lttng_condition_session_rotation_completed_create_from_payload(
+ struct lttng_payload_view *view,
+ struct lttng_condition **condition)
+{
+ return lttng_condition_session_rotation_create_from_payload(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_payload(
+ enum lttng_condition_type type,
+ struct lttng_payload_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 =
+ (typeof(comm)) view->buffer.data;
+ struct lttng_buffer_view location_view;
+
+ if (view->buffer.size < sizeof(*comm)) {
+ goto error;
+ }
+
+ size = sizeof(*comm);
+ if (comm->has_location) {
+ location_view = lttng_buffer_view_from_view(
+ &view->buffer, 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_payload(
+ enum lttng_condition_type type,
+ struct lttng_payload_view *view,
+ struct lttng_evaluation **_evaluation)
+{
+ ssize_t ret;
+ struct lttng_evaluation *evaluation = NULL;
+
+ if (!_evaluation) {
+ ret = -1;
+ goto error;
+ }
+
+ ret = create_evaluation_from_payload(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_payload(
+ struct lttng_payload_view *view,
+ struct lttng_evaluation **evaluation)
+{
+ return lttng_evaluation_session_rotation_create_from_payload(
+ LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING,
+ view, evaluation);
+}
+
+LTTNG_HIDDEN
+ssize_t lttng_evaluation_session_rotation_completed_create_from_payload(
+ struct lttng_payload_view *view,
+ struct lttng_evaluation **evaluation)
+{
+ return lttng_evaluation_session_rotation_create_from_payload(
+ 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_payload *payload)
+{
+ 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(
+ &payload->buffer, &comm, sizeof(comm));
+ if (ret) {
+ goto end;
+ }
+ if (!rotation->location) {
+ goto end;
+ }
+ ret = lttng_trace_archive_location_serialize(rotation->location,
+ &payload->buffer);
+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