-/*
- * event.c
- *
- * Linux Trace Toolkit Control Library
- *
- * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
- *
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- */
-
-#define _LGPL_SOURCE
-#include <stddef.h>
-
-#include <common/error.h>
-#include <common/sessiond-comm/sessiond-comm.h>
-#include <lttng/event-internal.h>
-#include <lttng/event.h>
-#include <lttng/lttng-error.h>
-#include <lttng/userspace-probe-internal.h>
-
-struct lttng_event *lttng_event_create(void)
-{
- struct lttng_event *event;
- struct lttng_event_extended *event_extended;
-
- event = zmalloc(sizeof(*event));
- if (!event) {
- PERROR("Error allocating event structure");
- goto end;
- }
-
- event_extended = zmalloc(sizeof(*event_extended));
- if (!event_extended) {
- PERROR("Error allocating event extended structure");
- goto error;
- }
- event->extended.ptr = event_extended;
-end:
- return event;
-error:
- free(event);
- event = NULL;
- goto end;
-}
-
-void lttng_event_destroy(struct lttng_event *event)
-{
- struct lttng_event_extended *event_extended;
-
- if (!event) {
- return;
- }
-
- event_extended = (struct lttng_event_extended *) event->extended.ptr;
-
- if (event_extended) {
- if (event_extended->probe_location) {
- lttng_userspace_probe_location_destroy(
- event_extended->probe_location);
- }
- free(event_extended);
- }
- free(event);
-}
-
-int lttng_event_get_filter_expression(struct lttng_event *event,
- const char **filter_expression)
-{
- int ret = 0;
- struct lttng_event_extended *event_extended;
-
- if (!event || !filter_expression) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- event_extended = (struct lttng_event_extended *) event->extended.ptr;
- if (!event_extended) {
- /*
- * This can happen since the lttng_event structure is
- * used for other tasks where this pointer is never set.
- */
- *filter_expression = NULL;
- goto end;
- }
-
- *filter_expression = event_extended->filter_expression;
-end:
- return ret;
-}
-
-int lttng_event_get_exclusion_name_count(struct lttng_event *event)
-{
- int ret = 0;
- struct lttng_event_extended *event_extended;
-
- if (!event) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- event_extended = (struct lttng_event_extended *) event->extended.ptr;
- if (!event_extended) {
- /*
- * This can happen since the lttng_event structure is
- * used for other tasks where this pointer is never set.
- */
- goto end;
- }
-
- if (event_extended->exclusions.count > INT_MAX) {
- ret = -LTTNG_ERR_OVERFLOW;
- goto end;
- }
- ret = (int) event_extended->exclusions.count;
-end:
- return ret;
-}
-
-int lttng_event_get_exclusion_name(struct lttng_event *event,
- size_t index, const char **exclusion_name)
-{
- int ret = 0;
- struct lttng_event_extended *event_extended;
-
- if (!event || !exclusion_name) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- if (index > UINT_MAX) {
- ret = -LTTNG_ERR_OVERFLOW;
- goto end;
- }
-
- event_extended = (struct lttng_event_extended *) event->extended.ptr;
- if (!event_extended) {
- /*
- * This can happen since the lttng_event structure is
- * used for other tasks where this pointer is never set.
- */
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- if (index >= event_extended->exclusions.count) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- *exclusion_name = event_extended->exclusions.strings +
- (index * LTTNG_SYMBOL_NAME_LEN);
-end:
- return ret;
-}
-
-const struct lttng_userspace_probe_location *
-lttng_event_get_userspace_probe_location(const struct lttng_event *event)
-{
- struct lttng_userspace_probe_location *probe_location = NULL;
- struct lttng_event_extended *event_extended;
-
- if (!event) {
- goto end;
- }
-
- event_extended = (struct lttng_event_extended *) event->extended.ptr;
- if (!event_extended) {
- goto end;
- }
- probe_location = event_extended->probe_location;
-end:
- return probe_location;
-}
-
-int lttng_event_set_userspace_probe_location(struct lttng_event *event,
- struct lttng_userspace_probe_location *probe_location)
-{
- int ret = 0;
- struct lttng_event_extended *event_extended;
-
- if (!event || !probe_location) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- event_extended = (struct lttng_event_extended *) event->extended.ptr;
- LTTNG_ASSERT(event_extended);
- if (event_extended->probe_location) {
- lttng_userspace_probe_location_destroy(
- event_extended->probe_location);
- }
- event_extended->probe_location = probe_location;
-end:
- return ret;
-}