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e6a39346 JR |
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_H | |
9 | #define LTTNG_EVENT_RULE_SYSCALL_H | |
10 | ||
11 | #include <lttng/event-rule/event-rule.h> | |
12 | ||
13 | #ifdef __cplusplus | |
14 | extern "C" { | |
15 | #endif | |
16 | ||
17 | /* | |
18 | * Create a newly allocated syscall event rule. | |
19 | * | |
20 | * Returns a new event rule on success, NULL on failure. This event rule must be | |
21 | * destroyed using lttng_event_rule_destroy(). | |
22 | */ | |
23 | extern struct lttng_event_rule *lttng_event_rule_syscall_create(void); | |
24 | ||
25 | /* | |
26 | * Set the pattern of a syscall event rule. | |
27 | * | |
28 | * Pattern can contain wildcard '*'. See man lttng-enable-event. | |
29 | * | |
30 | * The pattern is copied internally. | |
31 | * | |
32 | * Returns LTTNG_EVENT_RULE_STATUS_OK on success, LTTNG_EVENT_RULE_STATUS_INVALID | |
33 | * if invalid parameters are passed. | |
34 | */ | |
35 | extern enum lttng_event_rule_status lttng_event_rule_syscall_set_pattern( | |
36 | struct lttng_event_rule *rule, const char *pattern); | |
37 | ||
38 | /* | |
39 | * Get the pattern of a syscall event rule. | |
40 | * | |
41 | * The caller does not assume the ownership of the returned pattern. The | |
42 | * pattern shall only only be used for the duration of the event rule's | |
43 | * lifetime, or before a different pattern is set. | |
44 | * | |
45 | * Returns LTTNG_EVENT_RULE_STATUS_OK and a pointer to the event rule's pattern | |
46 | * on success, LTTNG_EVENT_RULE_STATUS_INVALID if an invalid | |
47 | * parameter is passed, or LTTNG_EVENT_RULE_STATUS_UNSET if a pattern | |
48 | * was not set prior to this call. | |
49 | */ | |
50 | extern enum lttng_event_rule_status lttng_event_rule_syscall_get_pattern( | |
51 | const struct lttng_event_rule *rule, const char **pattern); | |
52 | ||
53 | /* | |
54 | * Set the filter expression of a syscall event rule. | |
55 | * | |
56 | * The expression is copied internally. | |
57 | * | |
58 | * Returns LTTNG_EVENT_RULE_STATUS_OK on success, LTTNG_EVENT_RULE_STATUS_INVALID | |
59 | * if invalid parameters are passed. | |
60 | */ | |
61 | extern enum lttng_event_rule_status lttng_event_rule_syscall_set_filter( | |
62 | struct lttng_event_rule *rule, const char *expression); | |
63 | ||
64 | /* | |
65 | * Get the filter expression of a syscall event rule. | |
66 | * | |
67 | * The caller does not assume the ownership of the returned filter expression. | |
68 | * The filter expression shall only only be used for the duration of the event | |
69 | * rule's lifetime, or before a different filter expression is set. | |
70 | * | |
71 | * Returns LTTNG_EVENT_RULE_STATUS_OK and a pointer to the event rule's filter | |
72 | * expression on success, LTTNG_EVENT_RULE_STATUS_INVALID if an invalid | |
73 | * parameter is passed, or LTTNG_EVENT_RULE_STATUS_UNSET if a filter expression | |
74 | * was not set prior to this call. | |
75 | */ | |
76 | extern enum lttng_event_rule_status lttng_event_rule_syscall_get_filter( | |
77 | const struct lttng_event_rule *rule, const char **expression); | |
78 | ||
79 | #ifdef __cplusplus | |
80 | } | |
81 | #endif | |
82 | ||
83 | #endif /* LTTNG_EVENT_RULE_SYSCALL_H */ |