X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=include%2Flttng%2Fevent-rule%2Fkernel-syscall.h;fp=include%2Flttng%2Fevent-rule%2Fkernel-syscall.h;h=1db6915877440a8690dc34b88f4714244ac57125;hb=4f7da553ae57a6c947da2b9668c06418b2d50e99;hp=0000000000000000000000000000000000000000;hpb=f6a5af193de5e5f219111604382ec69b784a49c7;p=lttng-tools.git

diff --git a/include/lttng/event-rule/kernel-syscall.h b/include/lttng/event-rule/kernel-syscall.h
new file mode 100644
index 000000000..1db691587
--- /dev/null
+++ b/include/lttng/event-rule/kernel-syscall.h
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2019 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#ifndef LTTNG_EVENT_RULE_KERNEL_SYSCALL_H
+#define LTTNG_EVENT_RULE_KERNEL_SYSCALL_H
+
+#include <lttng/event-rule/event-rule.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum lttng_event_rule_kernel_syscall_emission_site {
+	LTTNG_EVENT_RULE_KERNEL_SYSCALL_EMISSION_SITE_ENTRY_EXIT = 0,
+	LTTNG_EVENT_RULE_KERNEL_SYSCALL_EMISSION_SITE_ENTRY = 1,
+	LTTNG_EVENT_RULE_KERNEL_SYSCALL_EMISSION_SITE_EXIT = 2,
+	LTTNG_EVENT_RULE_KERNEL_SYSCALL_EMISSION_SITE_UNKNOWN = -1,
+};
+
+/*
+ * Create a newly allocated kernel syscall event rule.
+ *
+ * The default pattern is '*'.
+ * The default emission site is LTTNG_EVENT_RULE_KERNEL_SYSCALL_EMISSION_SITE_ENTRY_EXIT.
+ *
+ * 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_syscall_create(enum
+		lttng_event_rule_kernel_syscall_emission_site emission_site);
+
+/*
+ * Set the name pattern of a kernel syscall event rule.
+ *
+ * Pattern can contain wildcard '*'. See man lttng-enable-event.
+ *
+ * The pattern is copied internally.
+ *
+ * Returns 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_syscall_set_name_pattern(
+		struct lttng_event_rule *rule, const char *pattern);
+
+/*
+ * Get the name pattern of a kernel syscall 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_syscall_get_name_pattern(
+		const struct lttng_event_rule *rule, const char **pattern);
+
+/*
+ * Set the filter expression of a kernel syscall event rule.
+ *
+ * The expression is copied internally.
+ *
+ * Returns 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_syscall_set_filter(
+		struct lttng_event_rule *rule, const char *expression);
+
+/*
+ * Get the filter expression of a kernel syscall 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_syscall_get_filter(
+		const struct lttng_event_rule *rule, const char **expression);
+
+/*
+ * Get the emission site of a kernel syscall event rule.
+ *
+ * Returns a enum lttng_event_rule_kernel_syscall_emission_site.
+ */
+extern enum lttng_event_rule_kernel_syscall_emission_site
+lttng_event_rule_kernel_syscall_get_emission_site(
+		const struct lttng_event_rule *rule);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LTTNG_EVENT_RULE_KERNEL_SYSCALL_H */