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668ba131 JG |
1 | /* |
2 | * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU Lesser General Public License, version 2.1 only, | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License | |
11 | * for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public License | |
14 | * along with this library; if not, write to the Free Software Foundation, | |
15 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
16 | */ | |
17 | ||
18 | #include <lttng/trigger/trigger-internal.h> | |
2a38b722 JG |
19 | #include <lttng/condition/condition-internal.h> |
20 | #include <lttng/action/action-internal.h> | |
668ba131 JG |
21 | #include <assert.h> |
22 | ||
96f8e9b0 JG |
23 | LTTNG_HIDDEN |
24 | bool lttng_trigger_validate(struct lttng_trigger *trigger) | |
25 | { | |
26 | bool valid; | |
27 | ||
28 | if (!trigger) { | |
29 | valid = false; | |
30 | goto end; | |
31 | } | |
32 | ||
33 | valid = lttng_condition_validate(trigger->condition) && | |
34 | lttng_action_validate(trigger->action); | |
35 | end: | |
36 | return valid; | |
37 | } | |
38 | ||
668ba131 JG |
39 | struct lttng_trigger *lttng_trigger_create( |
40 | struct lttng_condition *condition, | |
41 | struct lttng_action *action) | |
42 | { | |
43 | struct lttng_trigger *trigger = NULL; | |
44 | ||
45 | if (!condition || !action) { | |
46 | goto end; | |
47 | } | |
48 | ||
49 | trigger = zmalloc(sizeof(struct lttng_trigger)); | |
50 | if (!trigger) { | |
51 | goto end; | |
52 | } | |
53 | ||
54 | trigger->condition = condition; | |
55 | trigger->action = action; | |
56 | end: | |
57 | return trigger; | |
58 | } | |
59 | ||
60 | void lttng_trigger_destroy(struct lttng_trigger *trigger) | |
61 | { | |
62 | if (!trigger) { | |
63 | return; | |
64 | } | |
65 | ||
66 | lttng_condition_destroy(trigger->condition); | |
67 | lttng_action_destroy(trigger->action); | |
68 | free(trigger); | |
69 | } | |
2a38b722 | 70 | |
96f8e9b0 JG |
71 | LTTNG_HIDDEN |
72 | ssize_t lttng_trigger_create_from_buffer(const char *buf, | |
73 | struct lttng_trigger **trigger) | |
74 | { | |
75 | ssize_t ret, trigger_size; | |
76 | struct lttng_condition *condition = NULL; | |
77 | struct lttng_action *action = NULL; | |
78 | ||
79 | if (!buf || !trigger) { | |
80 | ret = -1; | |
81 | goto end; | |
82 | } | |
83 | ||
84 | ret = lttng_condition_create_from_buffer(buf, &condition); | |
85 | if (ret < 0) { | |
86 | goto end; | |
87 | } | |
88 | ||
89 | trigger_size = ret; | |
90 | buf += ret; | |
91 | ret = lttng_action_create_from_buffer(buf, &action); | |
92 | if (ret < 0) { | |
93 | goto end; | |
94 | } | |
95 | ||
96 | trigger_size += ret; | |
97 | *trigger = lttng_trigger_create(condition, action); | |
98 | if (!*trigger) { | |
99 | goto error; | |
100 | } | |
101 | ret = trigger_size; | |
102 | end: | |
103 | return ret; | |
104 | error: | |
105 | lttng_condition_destroy(condition); | |
106 | lttng_action_destroy(action); | |
107 | return ret; | |
108 | } | |
109 | ||
110 | /* | |
111 | * Returns the size of a trigger's condition and action. | |
112 | * Both elements are stored contiguously, see their "*_comm" structure | |
113 | * for the detailed format. | |
114 | */ | |
115 | LTTNG_HIDDEN | |
2a38b722 JG |
116 | ssize_t lttng_trigger_serialize(struct lttng_trigger *trigger, char *buf) |
117 | { | |
118 | ssize_t action_size, condition_size, ret; | |
119 | ||
120 | if (!trigger) { | |
121 | ret = -1; | |
122 | goto end; | |
123 | } | |
124 | ||
96f8e9b0 JG |
125 | condition_size = lttng_condition_serialize(trigger->condition, NULL); |
126 | if (condition_size < 0) { | |
127 | ret = -1; | |
128 | goto end; | |
129 | } | |
130 | ||
131 | action_size = lttng_action_serialize(trigger->action, NULL); | |
132 | if (action_size < 0) { | |
133 | ret = -1; | |
134 | goto end; | |
135 | } | |
136 | ||
137 | ret = action_size + condition_size; | |
138 | if (!buf) { | |
139 | goto end; | |
140 | } | |
141 | ||
2a38b722 JG |
142 | condition_size = lttng_condition_serialize(trigger->condition, buf); |
143 | if (condition_size < 0) { | |
144 | ret = -1; | |
145 | goto end; | |
146 | } | |
147 | ||
96f8e9b0 | 148 | buf += condition_size; |
2a38b722 JG |
149 | action_size = lttng_action_serialize(trigger->action, buf); |
150 | if (action_size < 0) { | |
151 | ret = -1; | |
152 | goto end; | |
153 | } | |
2a38b722 JG |
154 | end: |
155 | return ret; | |
156 | } |