Commit | Line | Data |
---|---|---|
eb5c4f4e JG |
1 | /* |
2 | * event.c | |
3 | * | |
4 | * Linux Trace Toolkit Control Library | |
5 | * | |
ab5be9fa | 6 | * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
eb5c4f4e | 7 | * |
ab5be9fa | 8 | * SPDX-License-Identifier: LGPL-2.1-only |
eb5c4f4e | 9 | * |
eb5c4f4e JG |
10 | */ |
11 | ||
12 | #define _LGPL_SOURCE | |
c9e313bc SM |
13 | #include <common/error.hpp> |
14 | #include <common/sessiond-comm/sessiond-comm.hpp> | |
28ab034a | 15 | |
c9e313bc | 16 | #include <lttng/event-internal.hpp> |
ef0e06bc JG |
17 | #include <lttng/event.h> |
18 | #include <lttng/lttng-error.h> | |
c9e313bc | 19 | #include <lttng/userspace-probe-internal.hpp> |
ef0e06bc | 20 | |
28ab034a JG |
21 | #include <stddef.h> |
22 | ||
ef0e06bc JG |
23 | struct lttng_event *lttng_event_create(void) |
24 | { | |
25 | struct lttng_event *event; | |
26 | struct lttng_event_extended *event_extended; | |
27 | ||
64803277 | 28 | event = zmalloc<lttng_event>(); |
ef0e06bc JG |
29 | if (!event) { |
30 | PERROR("Error allocating event structure"); | |
31 | goto end; | |
32 | } | |
33 | ||
64803277 | 34 | event_extended = zmalloc<lttng_event_extended>(); |
ef0e06bc JG |
35 | if (!event_extended) { |
36 | PERROR("Error allocating event extended structure"); | |
37 | goto error; | |
38 | } | |
39 | event->extended.ptr = event_extended; | |
40 | end: | |
41 | return event; | |
42 | error: | |
43 | free(event); | |
cd9adb8b | 44 | event = nullptr; |
ef0e06bc JG |
45 | goto end; |
46 | } | |
47 | ||
48 | void lttng_event_destroy(struct lttng_event *event) | |
49 | { | |
50 | struct lttng_event_extended *event_extended; | |
51 | ||
52 | if (!event) { | |
53 | return; | |
54 | } | |
55 | ||
56 | event_extended = (struct lttng_event_extended *) event->extended.ptr; | |
57 | ||
58 | if (event_extended) { | |
59 | if (event_extended->probe_location) { | |
28ab034a | 60 | lttng_userspace_probe_location_destroy(event_extended->probe_location); |
ef0e06bc JG |
61 | } |
62 | free(event_extended); | |
63 | } | |
64 | free(event); | |
65 | } | |
eb5c4f4e | 66 | |
28ab034a | 67 | int lttng_event_get_filter_expression(struct lttng_event *event, const char **filter_expression) |
eb5c4f4e JG |
68 | { |
69 | int ret = 0; | |
de453daa | 70 | struct lttng_event_extended *event_extended; |
eb5c4f4e JG |
71 | |
72 | if (!event || !filter_expression) { | |
73 | ret = -LTTNG_ERR_INVALID; | |
74 | goto end; | |
75 | } | |
76 | ||
de453daa JG |
77 | event_extended = (struct lttng_event_extended *) event->extended.ptr; |
78 | if (!event_extended) { | |
eb5c4f4e JG |
79 | /* |
80 | * This can happen since the lttng_event structure is | |
81 | * used for other tasks where this pointer is never set. | |
82 | */ | |
cd9adb8b | 83 | *filter_expression = nullptr; |
eb5c4f4e JG |
84 | goto end; |
85 | } | |
86 | ||
de453daa | 87 | *filter_expression = event_extended->filter_expression; |
eb5c4f4e JG |
88 | end: |
89 | return ret; | |
90 | } | |
91 | ||
92 | int lttng_event_get_exclusion_name_count(struct lttng_event *event) | |
93 | { | |
de453daa JG |
94 | int ret = 0; |
95 | struct lttng_event_extended *event_extended; | |
eb5c4f4e JG |
96 | |
97 | if (!event) { | |
98 | ret = -LTTNG_ERR_INVALID; | |
99 | goto end; | |
100 | } | |
101 | ||
de453daa JG |
102 | event_extended = (struct lttng_event_extended *) event->extended.ptr; |
103 | if (!event_extended) { | |
eb5c4f4e JG |
104 | /* |
105 | * This can happen since the lttng_event structure is | |
106 | * used for other tasks where this pointer is never set. | |
107 | */ | |
eb5c4f4e JG |
108 | goto end; |
109 | } | |
110 | ||
de453daa | 111 | if (event_extended->exclusions.count > INT_MAX) { |
eb5c4f4e JG |
112 | ret = -LTTNG_ERR_OVERFLOW; |
113 | goto end; | |
114 | } | |
de453daa | 115 | ret = (int) event_extended->exclusions.count; |
eb5c4f4e JG |
116 | end: |
117 | return ret; | |
118 | } | |
119 | ||
120 | int lttng_event_get_exclusion_name(struct lttng_event *event, | |
28ab034a JG |
121 | size_t index, |
122 | const char **exclusion_name) | |
eb5c4f4e JG |
123 | { |
124 | int ret = 0; | |
de453daa | 125 | struct lttng_event_extended *event_extended; |
eb5c4f4e JG |
126 | |
127 | if (!event || !exclusion_name) { | |
128 | ret = -LTTNG_ERR_INVALID; | |
129 | goto end; | |
130 | } | |
131 | ||
de453daa JG |
132 | if (index > UINT_MAX) { |
133 | ret = -LTTNG_ERR_OVERFLOW; | |
eb5c4f4e JG |
134 | goto end; |
135 | } | |
136 | ||
de453daa JG |
137 | event_extended = (struct lttng_event_extended *) event->extended.ptr; |
138 | if (!event_extended) { | |
139 | /* | |
140 | * This can happen since the lttng_event structure is | |
141 | * used for other tasks where this pointer is never set. | |
142 | */ | |
eb5c4f4e JG |
143 | ret = -LTTNG_ERR_INVALID; |
144 | goto end; | |
145 | } | |
146 | ||
de453daa JG |
147 | if (index >= event_extended->exclusions.count) { |
148 | ret = -LTTNG_ERR_INVALID; | |
149 | goto end; | |
150 | } | |
eb5c4f4e | 151 | |
28ab034a | 152 | *exclusion_name = event_extended->exclusions.strings + (index * LTTNG_SYMBOL_NAME_LEN); |
eb5c4f4e JG |
153 | end: |
154 | return ret; | |
155 | } | |
ef0e06bc | 156 | |
87597c2c JG |
157 | const struct lttng_userspace_probe_location * |
158 | lttng_event_get_userspace_probe_location(const struct lttng_event *event) | |
ef0e06bc | 159 | { |
cd9adb8b | 160 | struct lttng_userspace_probe_location *probe_location = nullptr; |
ef0e06bc JG |
161 | struct lttng_event_extended *event_extended; |
162 | ||
163 | if (!event) { | |
164 | goto end; | |
165 | } | |
166 | ||
167 | event_extended = (struct lttng_event_extended *) event->extended.ptr; | |
168 | if (!event_extended) { | |
169 | goto end; | |
170 | } | |
171 | probe_location = event_extended->probe_location; | |
172 | end: | |
173 | return probe_location; | |
174 | } | |
175 | ||
176 | int lttng_event_set_userspace_probe_location(struct lttng_event *event, | |
28ab034a | 177 | struct lttng_userspace_probe_location *probe_location) |
ef0e06bc JG |
178 | { |
179 | int ret = 0; | |
180 | struct lttng_event_extended *event_extended; | |
181 | ||
182 | if (!event || !probe_location) { | |
183 | ret = -LTTNG_ERR_INVALID; | |
184 | goto end; | |
185 | } | |
186 | ||
187 | event_extended = (struct lttng_event_extended *) event->extended.ptr; | |
a0377dfe | 188 | LTTNG_ASSERT(event_extended); |
ef0e06bc | 189 | if (event_extended->probe_location) { |
28ab034a | 190 | lttng_userspace_probe_location_destroy(event_extended->probe_location); |
ef0e06bc JG |
191 | } |
192 | event_extended->probe_location = probe_location; | |
193 | end: | |
194 | return ret; | |
195 | } |