Commit | Line | Data |
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a58c490f | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
a58c490f | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: LGPL-2.1-only |
a58c490f | 5 | * |
a58c490f JG |
6 | */ |
7 | ||
c9e313bc SM |
8 | #include <lttng/notification/notification-internal.hpp> |
9 | #include <lttng/condition/condition-internal.hpp> | |
10 | #include <lttng/condition/evaluation-internal.hpp> | |
a58c490f JG |
11 | #include <lttng/condition/condition.h> |
12 | #include <lttng/condition/evaluation.h> | |
c9e313bc SM |
13 | #include <lttng/trigger/trigger-internal.hpp> |
14 | #include <common/payload.hpp> | |
15 | #include <common/payload-view.hpp> | |
a58c490f | 16 | |
a58c490f | 17 | struct lttng_notification *lttng_notification_create( |
52d55cf9 | 18 | struct lttng_trigger *trigger, |
a58c490f JG |
19 | struct lttng_evaluation *evaluation) |
20 | { | |
21 | struct lttng_notification *notification = NULL; | |
22 | ||
52d55cf9 | 23 | if (!trigger || !evaluation) { |
a58c490f JG |
24 | goto end; |
25 | } | |
26 | ||
64803277 | 27 | notification = zmalloc<lttng_notification>(); |
a58c490f JG |
28 | if (!notification) { |
29 | goto end; | |
30 | } | |
31 | ||
52d55cf9 | 32 | notification->trigger = trigger; |
a58c490f | 33 | notification->evaluation = evaluation; |
a58c490f JG |
34 | end: |
35 | return notification; | |
36 | } | |
37 | ||
9b63a4aa | 38 | int lttng_notification_serialize(const struct lttng_notification *notification, |
c0a66c84 | 39 | struct lttng_payload *payload) |
a58c490f | 40 | { |
3647288f JG |
41 | int ret; |
42 | size_t header_offset, size_before_payload; | |
f3742004 | 43 | struct lttng_notification_comm notification_comm; |
3647288f | 44 | struct lttng_notification_comm *header; |
a58c490f | 45 | |
f3742004 JG |
46 | notification_comm.length = 0; |
47 | ||
c0a66c84 JG |
48 | header_offset = payload->buffer.size; |
49 | ret = lttng_dynamic_buffer_append(&payload->buffer, ¬ification_comm, | |
3647288f | 50 | sizeof(notification_comm)); |
28cff59f JG |
51 | if (ret) { |
52 | goto end; | |
53 | } | |
a58c490f | 54 | |
c0a66c84 | 55 | size_before_payload = payload->buffer.size; |
52d55cf9 | 56 | ret = lttng_trigger_serialize(notification->trigger, |
c0a66c84 | 57 | payload); |
3647288f | 58 | if (ret) { |
a58c490f JG |
59 | goto end; |
60 | } | |
a58c490f | 61 | |
c0a66c84 | 62 | ret = lttng_evaluation_serialize(notification->evaluation, payload); |
3647288f | 63 | if (ret) { |
a58c490f JG |
64 | goto end; |
65 | } | |
a58c490f | 66 | |
3647288f | 67 | /* Update payload size. */ |
c0a66c84 JG |
68 | header = (typeof(header)) (payload->buffer.data + header_offset); |
69 | header->length = (uint32_t) (payload->buffer.size - size_before_payload); | |
a58c490f JG |
70 | end: |
71 | return ret; | |
72 | ||
73 | } | |
74 | ||
c0a66c84 JG |
75 | ssize_t lttng_notification_create_from_payload( |
76 | struct lttng_payload_view *src_view, | |
a58c490f JG |
77 | struct lttng_notification **notification) |
78 | { | |
f58ae8ad JG |
79 | ssize_t ret, notification_size = 0, trigger_size, evaluation_size; |
80 | struct lttng_trigger *trigger = NULL; | |
81 | struct lttng_evaluation *evaluation = NULL; | |
3e6e0df2 JG |
82 | const struct lttng_notification_comm *notification_comm; |
83 | const struct lttng_payload_view notification_comm_view = | |
84 | lttng_payload_view_from_view( | |
85 | src_view, 0, sizeof(*notification_comm)); | |
a58c490f JG |
86 | |
87 | if (!src_view || !notification) { | |
88 | ret = -1; | |
f58ae8ad | 89 | goto error; |
a58c490f JG |
90 | } |
91 | ||
3e6e0df2 JG |
92 | if (!lttng_payload_view_is_valid(¬ification_comm_view)) { |
93 | /* Payload not large enough to contain the header. */ | |
94 | ret = -1; | |
f58ae8ad | 95 | goto error; |
3e6e0df2 JG |
96 | } |
97 | ||
98 | notification_comm = (typeof(notification_comm)) notification_comm_view.buffer.data; | |
a58c490f | 99 | notification_size += sizeof(*notification_comm); |
c0a66c84 JG |
100 | { |
101 | /* struct lttng_condition */ | |
102 | struct lttng_payload_view condition_view = | |
103 | lttng_payload_view_from_view(src_view, | |
104 | notification_size, -1); | |
105 | ||
f58ae8ad | 106 | trigger_size = lttng_trigger_create_from_payload( |
52d55cf9 | 107 | &condition_view, &trigger); |
c0a66c84 | 108 | } |
a58c490f | 109 | |
f58ae8ad JG |
110 | if (trigger_size < 0) { |
111 | ret = trigger_size; | |
112 | goto error; | |
a58c490f | 113 | } |
c0a66c84 | 114 | |
f58ae8ad | 115 | notification_size += trigger_size; |
a58c490f | 116 | |
c0a66c84 JG |
117 | { |
118 | /* struct lttng_evaluation */ | |
119 | struct lttng_payload_view evaluation_view = | |
120 | lttng_payload_view_from_view(src_view, | |
121 | notification_size, -1); | |
122 | ||
123 | evaluation_size = lttng_evaluation_create_from_payload( | |
52d55cf9 JG |
124 | lttng_trigger_get_const_condition(trigger), |
125 | &evaluation_view, &evaluation); | |
c0a66c84 JG |
126 | } |
127 | ||
a58c490f JG |
128 | if (evaluation_size < 0) { |
129 | ret = evaluation_size; | |
f58ae8ad | 130 | goto error; |
a58c490f | 131 | } |
c0a66c84 | 132 | |
a58c490f JG |
133 | notification_size += evaluation_size; |
134 | ||
135 | /* Unexpected size of inner-elements; the buffer is corrupted. */ | |
136 | if ((ssize_t) notification_comm->length != | |
f58ae8ad | 137 | trigger_size + evaluation_size) { |
a58c490f JG |
138 | ret = -1; |
139 | goto error; | |
140 | } | |
141 | ||
52d55cf9 | 142 | *notification = lttng_notification_create(trigger, evaluation); |
a58c490f JG |
143 | if (!*notification) { |
144 | ret = -1; | |
145 | goto error; | |
146 | } | |
f58ae8ad | 147 | |
a58c490f | 148 | ret = notification_size; |
a58c490f | 149 | return ret; |
f58ae8ad | 150 | |
a58c490f | 151 | error: |
52d55cf9 | 152 | lttng_trigger_destroy(trigger); |
a58c490f JG |
153 | lttng_evaluation_destroy(evaluation); |
154 | return ret; | |
155 | } | |
156 | ||
157 | void lttng_notification_destroy(struct lttng_notification *notification) | |
158 | { | |
159 | if (!notification) { | |
160 | return; | |
161 | } | |
162 | ||
52d55cf9 | 163 | lttng_trigger_destroy(notification->trigger); |
9b63a4aa | 164 | lttng_evaluation_destroy(notification->evaluation); |
a58c490f JG |
165 | free(notification); |
166 | } | |
167 | ||
168 | const struct lttng_condition *lttng_notification_get_condition( | |
169 | struct lttng_notification *notification) | |
170 | { | |
52d55cf9 | 171 | return notification ? lttng_trigger_get_const_condition(notification->trigger) : NULL; |
a58c490f JG |
172 | } |
173 | ||
174 | const struct lttng_evaluation *lttng_notification_get_evaluation( | |
175 | struct lttng_notification *notification) | |
176 | { | |
177 | return notification ? notification->evaluation : NULL; | |
178 | } | |
6bec8cb2 | 179 | |
c08136a3 JG |
180 | const struct lttng_condition *lttng_notification_get_const_condition( |
181 | const struct lttng_notification *notification) | |
182 | { | |
183 | return notification ? lttng_trigger_get_const_condition(notification->trigger) : NULL; | |
184 | } | |
185 | ||
186 | const struct lttng_evaluation *lttng_notification_get_const_evaluation( | |
187 | const struct lttng_notification *notification) | |
188 | { | |
189 | return notification ? notification->evaluation : NULL; | |
190 | } | |
191 | ||
192 | const struct lttng_trigger *lttng_notification_get_const_trigger( | |
193 | const struct lttng_notification *notification) | |
194 | { | |
195 | return notification ? notification->trigger : NULL; | |
196 | } | |
197 | ||
6bec8cb2 JG |
198 | const struct lttng_trigger *lttng_notification_get_trigger( |
199 | struct lttng_notification *notification) | |
200 | { | |
201 | return notification ? notification->trigger : NULL; | |
202 | } |