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 | ||
28ab034a JG |
8 | #include <common/payload-view.hpp> |
9 | #include <common/payload.hpp> | |
10 | ||
c9e313bc | 11 | #include <lttng/condition/condition-internal.hpp> |
a58c490f | 12 | #include <lttng/condition/condition.h> |
28ab034a | 13 | #include <lttng/condition/evaluation-internal.hpp> |
a58c490f | 14 | #include <lttng/condition/evaluation.h> |
28ab034a | 15 | #include <lttng/notification/notification-internal.hpp> |
c9e313bc | 16 | #include <lttng/trigger/trigger-internal.hpp> |
a58c490f | 17 | |
28ab034a JG |
18 | struct lttng_notification *lttng_notification_create(struct lttng_trigger *trigger, |
19 | struct lttng_evaluation *evaluation) | |
a58c490f | 20 | { |
cd9adb8b | 21 | struct lttng_notification *notification = nullptr; |
a58c490f | 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, |
28ab034a | 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 | 48 | header_offset = payload->buffer.size; |
28ab034a JG |
49 | ret = lttng_dynamic_buffer_append( |
50 | &payload->buffer, ¬ification_comm, sizeof(notification_comm)); | |
28cff59f JG |
51 | if (ret) { |
52 | goto end; | |
53 | } | |
a58c490f | 54 | |
c0a66c84 | 55 | size_before_payload = payload->buffer.size; |
28ab034a | 56 | ret = lttng_trigger_serialize(notification->trigger, payload); |
3647288f | 57 | if (ret) { |
a58c490f JG |
58 | goto end; |
59 | } | |
a58c490f | 60 | |
c0a66c84 | 61 | ret = lttng_evaluation_serialize(notification->evaluation, payload); |
3647288f | 62 | if (ret) { |
a58c490f JG |
63 | goto end; |
64 | } | |
a58c490f | 65 | |
3647288f | 66 | /* Update payload size. */ |
c0a66c84 JG |
67 | header = (typeof(header)) (payload->buffer.data + header_offset); |
68 | header->length = (uint32_t) (payload->buffer.size - size_before_payload); | |
a58c490f JG |
69 | end: |
70 | return ret; | |
a58c490f JG |
71 | } |
72 | ||
28ab034a JG |
73 | ssize_t lttng_notification_create_from_payload(struct lttng_payload_view *src_view, |
74 | struct lttng_notification **notification) | |
a58c490f | 75 | { |
f58ae8ad | 76 | ssize_t ret, notification_size = 0, trigger_size, evaluation_size; |
cd9adb8b JG |
77 | struct lttng_trigger *trigger = nullptr; |
78 | struct lttng_evaluation *evaluation = nullptr; | |
3e6e0df2 JG |
79 | const struct lttng_notification_comm *notification_comm; |
80 | const struct lttng_payload_view notification_comm_view = | |
28ab034a | 81 | lttng_payload_view_from_view(src_view, 0, sizeof(*notification_comm)); |
a58c490f JG |
82 | |
83 | if (!src_view || !notification) { | |
84 | ret = -1; | |
f58ae8ad | 85 | goto error; |
a58c490f JG |
86 | } |
87 | ||
3e6e0df2 JG |
88 | if (!lttng_payload_view_is_valid(¬ification_comm_view)) { |
89 | /* Payload not large enough to contain the header. */ | |
90 | ret = -1; | |
f58ae8ad | 91 | goto error; |
3e6e0df2 JG |
92 | } |
93 | ||
94 | notification_comm = (typeof(notification_comm)) notification_comm_view.buffer.data; | |
a58c490f | 95 | notification_size += sizeof(*notification_comm); |
c0a66c84 JG |
96 | { |
97 | /* struct lttng_condition */ | |
98 | struct lttng_payload_view condition_view = | |
28ab034a | 99 | lttng_payload_view_from_view(src_view, notification_size, -1); |
c0a66c84 | 100 | |
28ab034a | 101 | trigger_size = lttng_trigger_create_from_payload(&condition_view, &trigger); |
c0a66c84 | 102 | } |
a58c490f | 103 | |
f58ae8ad JG |
104 | if (trigger_size < 0) { |
105 | ret = trigger_size; | |
106 | goto error; | |
a58c490f | 107 | } |
c0a66c84 | 108 | |
f58ae8ad | 109 | notification_size += trigger_size; |
a58c490f | 110 | |
c0a66c84 JG |
111 | { |
112 | /* struct lttng_evaluation */ | |
113 | struct lttng_payload_view evaluation_view = | |
28ab034a | 114 | lttng_payload_view_from_view(src_view, notification_size, -1); |
c0a66c84 JG |
115 | |
116 | evaluation_size = lttng_evaluation_create_from_payload( | |
28ab034a | 117 | lttng_trigger_get_const_condition(trigger), &evaluation_view, &evaluation); |
c0a66c84 JG |
118 | } |
119 | ||
a58c490f JG |
120 | if (evaluation_size < 0) { |
121 | ret = evaluation_size; | |
f58ae8ad | 122 | goto error; |
a58c490f | 123 | } |
c0a66c84 | 124 | |
a58c490f JG |
125 | notification_size += evaluation_size; |
126 | ||
127 | /* Unexpected size of inner-elements; the buffer is corrupted. */ | |
28ab034a | 128 | if ((ssize_t) notification_comm->length != trigger_size + evaluation_size) { |
a58c490f JG |
129 | ret = -1; |
130 | goto error; | |
131 | } | |
132 | ||
52d55cf9 | 133 | *notification = lttng_notification_create(trigger, evaluation); |
a58c490f JG |
134 | if (!*notification) { |
135 | ret = -1; | |
136 | goto error; | |
137 | } | |
f58ae8ad | 138 | |
a58c490f | 139 | ret = notification_size; |
a58c490f | 140 | return ret; |
f58ae8ad | 141 | |
a58c490f | 142 | error: |
52d55cf9 | 143 | lttng_trigger_destroy(trigger); |
a58c490f JG |
144 | lttng_evaluation_destroy(evaluation); |
145 | return ret; | |
146 | } | |
147 | ||
148 | void lttng_notification_destroy(struct lttng_notification *notification) | |
149 | { | |
150 | if (!notification) { | |
151 | return; | |
152 | } | |
153 | ||
52d55cf9 | 154 | lttng_trigger_destroy(notification->trigger); |
9b63a4aa | 155 | lttng_evaluation_destroy(notification->evaluation); |
a58c490f JG |
156 | free(notification); |
157 | } | |
158 | ||
28ab034a JG |
159 | const struct lttng_condition * |
160 | lttng_notification_get_condition(struct lttng_notification *notification) | |
a58c490f | 161 | { |
cd9adb8b | 162 | return notification ? lttng_trigger_get_const_condition(notification->trigger) : nullptr; |
a58c490f JG |
163 | } |
164 | ||
28ab034a JG |
165 | const struct lttng_evaluation * |
166 | lttng_notification_get_evaluation(struct lttng_notification *notification) | |
a58c490f | 167 | { |
cd9adb8b | 168 | return notification ? notification->evaluation : nullptr; |
a58c490f | 169 | } |
6bec8cb2 | 170 | |
28ab034a JG |
171 | const struct lttng_condition * |
172 | lttng_notification_get_const_condition(const struct lttng_notification *notification) | |
c08136a3 | 173 | { |
cd9adb8b | 174 | return notification ? lttng_trigger_get_const_condition(notification->trigger) : nullptr; |
c08136a3 JG |
175 | } |
176 | ||
28ab034a JG |
177 | const struct lttng_evaluation * |
178 | lttng_notification_get_const_evaluation(const struct lttng_notification *notification) | |
c08136a3 | 179 | { |
cd9adb8b | 180 | return notification ? notification->evaluation : nullptr; |
c08136a3 JG |
181 | } |
182 | ||
28ab034a JG |
183 | const struct lttng_trigger * |
184 | lttng_notification_get_const_trigger(const struct lttng_notification *notification) | |
c08136a3 | 185 | { |
cd9adb8b | 186 | return notification ? notification->trigger : nullptr; |
c08136a3 JG |
187 | } |
188 | ||
28ab034a | 189 | const struct lttng_trigger *lttng_notification_get_trigger(struct lttng_notification *notification) |
6bec8cb2 | 190 | { |
cd9adb8b | 191 | return notification ? notification->trigger : nullptr; |
6bec8cb2 | 192 | } |