X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=include%2Flttng%2Fevent-rule%2Fkernel-tracepoint.h;fp=include%2Flttng%2Fevent-rule%2Fkernel-tracepoint.h;h=84aa011e04c299ceb776c8d116df44d8ce0ae829;hp=0000000000000000000000000000000000000000;hb=af0818efba7511c6cd42806504102151d1a4c973;hpb=85522de5747fee084e2e391678a79918355345da

diff --git a/include/lttng/event-rule/kernel-tracepoint.h b/include/lttng/event-rule/kernel-tracepoint.h
new file mode 100644
index 000000000..84aa011e0
--- /dev/null
+++ b/include/lttng/event-rule/kernel-tracepoint.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2019 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#ifndef LTTNG_EVENT_RULE_KERNEL_TRACEPOINT_H
+#define LTTNG_EVENT_RULE_KERNEL_TRACEPOINT_H
+
+#include <lttng/event-rule/event-rule.h>
+#include <lttng/event.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Create a newly allocated kernel tracepoint event rule.
+ *
+ * The default pattern is '*'.
+ *
+ * Returns a new event rule on success, NULL on failure. This event rule must be
+ * destroyed using lttng_event_rule_destroy().
+ */
+extern struct lttng_event_rule *lttng_event_rule_kernel_tracepoint_create(void);
+
+/*
+ * Set the name pattern of a kernel tracepoint event rule.
+ *
+ * Pattern can contain wildcard '*'. See man lttng-enable-event.
+ *
+ * Return LTTNG_EVENT_RULE_STATUS_OK on success, LTTNG_EVENT_RULE_STATUS_INVALID
+ * if invalid parameters are passed.
+ */
+extern enum lttng_event_rule_status lttng_event_rule_kernel_tracepoint_set_name_pattern(
+		struct lttng_event_rule *rule, const char *pattern);
+
+/*
+ * Get the name pattern of a kernel tracepoint event rule.
+ *
+ * The caller does not assume the ownership of the returned pattern. The
+ * pattern shall only only be used for the duration of the event rule's
+ * lifetime, or before a different pattern is set.
+ *
+ * Returns LTTNG_EVENT_RULE_STATUS_OK and a pointer to the event rule's pattern
+ * on success, LTTNG_EVENT_RULE_STATUS_INVALID if an invalid
+ * parameter is passed, or LTTNG_EVENT_RULE_STATUS_UNSET if a pattern
+ * was not set prior to this call.
+ */
+extern enum lttng_event_rule_status lttng_event_rule_kernel_tracepoint_get_name_pattern(
+		const struct lttng_event_rule *rule, const char **pattern);
+
+/*
+ * Set the filter expression of a kernel tracepoint event rule.
+ *
+ * The expression is copied internally.
+ *
+ * Return LTTNG_EVENT_RULE_STATUS_OK on success, LTTNG_EVENT_RULE_STATUS_INVALID
+ * if invalid parameters are passed.
+ */
+extern enum lttng_event_rule_status lttng_event_rule_kernel_tracepoint_set_filter(
+		struct lttng_event_rule *rule, const char *expression);
+
+/*
+ * Get the filter expression of a kernel tracepoint event rule.
+ *
+ * The caller does not assume the ownership of the returned filter expression.
+ * The filter expression shall only only be used for the duration of the event
+ * rule's lifetime, or before a different filter expression is set.
+ *
+ * Returns LTTNG_EVENT_RULE_STATUS_OK and a pointer to the event rule's filter
+ * expression on success, LTTNG_EVENT_RULE_STATUS_INVALID if an invalid
+ * parameter is passed, or LTTNG_EVENT_RULE_STATUS_UNSET if a filter expression
+ * was not set prior to this call.
+ */
+extern enum lttng_event_rule_status lttng_event_rule_kernel_tracepoint_get_filter(
+		const struct lttng_event_rule *rule, const char **expression);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LTTNG_EVENT_RULE_KERNEL_TRACEPOINT_H */