struct lttng_trigger *trigger;
};
-struct lttng_error_query_action_comm {
- LTTNG_OPTIONAL_COMM(uint32_t) action_index;
- /* Trigger payload. */
- char payload[];
-};
-
struct lttng_error_query_action {
struct lttng_error_query parent;
/* Mutable only because of the reference count. */
struct lttng_trigger *trigger;
- /*
- * Index of the target action. Since action lists can't be nested,
- * the targetted action is the top-level list if the action_index is
- * unset. Otherwise, the index refers to the index within the top-level
- * list.
- */
- LTTNG_OPTIONAL(unsigned int) action_index;
+ struct lttng_action_path action_path;
};
struct lttng_error_query_result {
return query ? &query->parent : NULL;
}
-extern struct lttng_error_query *lttng_error_query_action_create(
- const struct lttng_trigger *trigger,
- const struct lttng_action *action)
+static
+struct lttng_action *get_trigger_action_from_path(
+ struct lttng_trigger *trigger,
+ const struct lttng_action_path *action_path)
{
- struct lttng_error_query_action *query = NULL;
- typeof(query->action_index) action_index = {};
- struct lttng_trigger *trigger_copy = NULL;
+ size_t index_count, i;
+ enum lttng_action_path_status path_status;
+ struct lttng_action *current_action = NULL;
- if (!trigger || !action) {
+ path_status = lttng_action_path_get_index_count(
+ action_path, &index_count);
+ if (path_status != LTTNG_ACTION_PATH_STATUS_OK) {
goto end;
}
- trigger_copy = lttng_trigger_copy(trigger);
- if (!trigger_copy) {
- goto end;
+ current_action = lttng_trigger_get_action(trigger);
+ for (i = 0; i < index_count; i++) {
+ uint64_t path_index;
+
+ path_status = lttng_action_path_get_index_at_index(
+ action_path, i, &path_index);
+ current_action = lttng_action_list_borrow_mutable_at_index(
+ current_action, path_index);
+ if (!current_action) {
+ /* Invalid action path. */
+ goto end;
+ }
}
+end:
+ return current_action;
+}
+
+static
+bool is_valid_action_path(const struct lttng_trigger *trigger,
+ const struct lttng_action_path *action_path)
+{
/*
- * If an action is not the top-level action of the trigger, our only
- * hope of finding its position is if the top-level action is an
- * action list.
- *
- * Note that action comparisons are performed by pointer since multiple
- * otherwise identical actions can be found in an action list (two
- * notify actions, for example).
+ * While 'trigger's constness is casted-away, the trigger and resulting
+ * action are not modified; we merely check for the action's existence.
*/
- if (action != trigger->action &&
- lttng_action_get_type(trigger->action) ==
- LTTNG_ACTION_TYPE_LIST) {
- unsigned int i, action_list_count;
- enum lttng_action_status action_status;
-
- action_status = lttng_action_list_get_count(
- trigger->action, &action_list_count);
- if (action_status != LTTNG_ACTION_STATUS_OK) {
- goto error;
- }
+ return !!get_trigger_action_from_path(
+ (struct lttng_trigger *) trigger, action_path);
+}
- for (i = 0; i < action_list_count; i++) {
- const struct lttng_action *candidate_action =
- lttng_action_list_get_at_index(
- trigger->action, i);
+struct lttng_error_query *lttng_error_query_action_create(
+ const struct lttng_trigger *trigger,
+ const struct lttng_action_path *action_path)
+{
+ struct lttng_error_query_action *query = NULL;
+ struct lttng_trigger *trigger_copy = NULL;
+ int ret_copy;
- assert(candidate_action);
- if (candidate_action == action) {
- LTTNG_OPTIONAL_SET(&action_index, i);
- break;
- }
- }
+ if (!trigger || !action_path ||
+ !is_valid_action_path(trigger, action_path)) {
+ goto end;
+ }
- if (!action_index.is_set) {
- /* Not found; invalid action. */
- goto error;
- }
- } else {
- /*
- * Trigger action is not a list and not equal to the target
- * action; invalid action provided.
- */
- goto error;
+ trigger_copy = lttng_trigger_copy(trigger);
+ if (!trigger_copy) {
+ goto end;
}
query = zmalloc(sizeof(*query));
goto error;
}
+ ret_copy = lttng_action_path_copy(action_path, &query->action_path);
+ if (ret_copy) {
+ goto error;
+ }
+
query->parent.target_type = LTTNG_ERROR_QUERY_TARGET_TYPE_ACTION;
query->trigger = trigger_copy;
trigger_copy = NULL;
- query->action_index = action_index;
+ goto end;
+
error:
lttng_trigger_put(trigger_copy);
+ lttng_error_query_destroy(query ? &query->parent : NULL);
end:
return query ? &query->parent : NULL;
}
int ret;
const struct lttng_error_query_action *query_action =
container_of(query, typeof(*query_action), parent);
- struct lttng_error_query_action_comm header = {
- .action_index.is_set = query_action->action_index.is_set,
- .action_index.value = query_action->action_index.value,
- };
if (!lttng_trigger_validate(query_action->trigger)) {
ret = -1;
goto end;
}
- ret = lttng_dynamic_buffer_append(
- &payload->buffer, &header, sizeof(header));
+ ret = lttng_trigger_serialize(query_action->trigger, payload);
if (ret) {
goto end;
}
- ret = lttng_trigger_serialize(query_action->trigger, payload);
+ ret = lttng_action_path_serialize(&query_action->action_path, payload);
if (ret) {
goto end;
}
+
end:
return ret;
}
const struct lttng_error_query *query,
struct lttng_trigger *trigger)
{
- struct lttng_action *target_action = NULL;
const struct lttng_error_query_action *query_action =
container_of(query, typeof(*query_action), parent);
- struct lttng_action *trigger_action =
- lttng_trigger_get_action(trigger);
-
- if (!query_action->action_index.is_set) {
- target_action = trigger_action;
- } else {
- if (lttng_action_get_type(trigger_action) !=
- LTTNG_ACTION_TYPE_LIST) {
- ERR("Invalid action error query target index: trigger action is not a list");
- goto end;
- }
-
- target_action = lttng_action_list_borrow_mutable_at_index(
- trigger_action,
- LTTNG_OPTIONAL_GET(query_action->action_index));
- }
-end:
- return target_action;
+ return get_trigger_action_from_path(
+ trigger, &query_action->action_path);
}
LTTNG_HIDDEN
}
case LTTNG_ERROR_QUERY_TARGET_TYPE_ACTION:
{
- const struct lttng_action *target_action;
- ssize_t trigger_used_size;
- struct lttng_error_query_action_comm *action_header;
-
- {
- struct lttng_payload_view action_header_view =
- lttng_payload_view_from_view(view,
- used_size,
- sizeof(*action_header));
-
- if (!lttng_payload_view_is_valid(&action_header_view)) {
- used_size = -1;
- goto end;
- }
-
- action_header = (typeof(action_header)) action_header_view.buffer.data;
- used_size += sizeof(*action_header);
- }
+ struct lttng_action_path *action_path = NULL;
{
+ ssize_t trigger_used_size;
struct lttng_payload_view trigger_view =
lttng_payload_view_from_view(
view, used_size, -1);
used_size += trigger_used_size;
}
- if (!action_header->action_index.is_set) {
- target_action = trigger->action;
- } else {
- if (lttng_action_get_type(trigger->action) !=
- LTTNG_ACTION_TYPE_LIST) {
+ {
+ ssize_t action_path_used_size;
+ struct lttng_payload_view action_path_view =
+ lttng_payload_view_from_view(
+ view, used_size, -1);
+
+ if (!lttng_payload_view_is_valid(&action_path_view)) {
+ used_size = -1;
+ goto end;
+ }
+
+ action_path_used_size = lttng_action_path_create_from_payload(
+ &action_path_view, &action_path);
+ if (action_path_used_size < 0) {
used_size = -1;
goto end;
}
- target_action = lttng_action_list_get_at_index(
- trigger->action,
- action_header->action_index.value);
+ used_size += action_path_used_size;
}
*query = lttng_error_query_action_create(
- trigger, target_action);
+ trigger, action_path);
+ lttng_action_path_destroy(action_path);
if (!*query) {
used_size = -1;
goto end;
projects / lttng-tools.git / blobdiff