event-rule: introduce event rule syscall
[lttng-tools.git] / include / lttng / event-rule / syscall-internal.h
1 /*
2 * Copyright (C) 2019 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
3 *
4 * SPDX-License-Identifier: LGPL-2.1-only
5 *
6 */
7
8 #ifndef LTTNG_EVENT_RULE_SYSCALL_INTERNAL_H
9 #define LTTNG_EVENT_RULE_SYSCALL_INTERNAL_H
10
11 #include <common/payload-view.h>
12 #include <common/macros.h>
13 #include <lttng/event-rule/event-rule-internal.h>
14 #include <lttng/event-rule/syscall.h>
15
16 struct lttng_event_rule_syscall {
17 struct lttng_event_rule parent;
18 char *pattern;
19 char *filter_expression;
20
21 /* Internal use only. */
22 struct {
23 char *filter;
24 struct lttng_filter_bytecode *bytecode;
25 } internal_filter;
26 };
27
28 struct lttng_event_rule_syscall_comm {
29 /* Includes terminator `\0`. */
30 uint32_t pattern_len;
31 /* Includes terminator `\0`. */
32 uint32_t filter_expression_len;
33 /*
34 * Payload is composed of, in that order:
35 * - Pattern (null terminated),
36 * - Filter expression (null terminated).
37 */
38 char payload[];
39 } LTTNG_PACKED;
40
41 LTTNG_HIDDEN
42 ssize_t lttng_event_rule_syscall_create_from_payload(
43 struct lttng_payload_view *view,
44 struct lttng_event_rule **rule);
45
46 #endif /* LTTNG_EVENT_RULE_SYSCALL_INTERNAL_H */
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