Commit | Line | Data |
---|---|---|
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 | ||
8 | #include <lttng/notification/notification-internal.h> | |
9 | #include <lttng/condition/condition-internal.h> | |
10 | #include <lttng/condition/evaluation-internal.h> | |
11 | #include <lttng/condition/condition.h> | |
12 | #include <lttng/condition/evaluation.h> | |
52d55cf9 | 13 | #include <lttng/trigger/trigger-internal.h> |
9e620ea7 JG |
14 | #include <common/payload.h> |
15 | #include <common/payload-view.h> | |
a58c490f JG |
16 | |
17 | LTTNG_HIDDEN | |
18 | struct lttng_notification *lttng_notification_create( | |
52d55cf9 | 19 | struct lttng_trigger *trigger, |
a58c490f JG |
20 | struct lttng_evaluation *evaluation) |
21 | { | |
22 | struct lttng_notification *notification = NULL; | |
23 | ||
52d55cf9 | 24 | if (!trigger || !evaluation) { |
a58c490f JG |
25 | goto end; |
26 | } | |
27 | ||
28 | notification = zmalloc(sizeof(struct lttng_notification)); | |
29 | if (!notification) { | |
30 | goto end; | |
31 | } | |
32 | ||
52d55cf9 | 33 | notification->trigger = trigger; |
a58c490f | 34 | notification->evaluation = evaluation; |
a58c490f JG |
35 | end: |
36 | return notification; | |
37 | } | |
38 | ||
39 | LTTNG_HIDDEN | |
9b63a4aa | 40 | int lttng_notification_serialize(const struct lttng_notification *notification, |
c0a66c84 | 41 | struct lttng_payload *payload) |
a58c490f | 42 | { |
3647288f JG |
43 | int ret; |
44 | size_t header_offset, size_before_payload; | |
1e9e2705 | 45 | struct lttng_notification_comm notification_comm = { 0 }; |
3647288f | 46 | struct lttng_notification_comm *header; |
a58c490f | 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 | ||
75 | LTTNG_HIDDEN | |
c0a66c84 JG |
76 | ssize_t lttng_notification_create_from_payload( |
77 | struct lttng_payload_view *src_view, | |
a58c490f JG |
78 | struct lttng_notification **notification) |
79 | { | |
f58ae8ad JG |
80 | ssize_t ret, notification_size = 0, trigger_size, evaluation_size; |
81 | struct lttng_trigger *trigger = NULL; | |
82 | struct lttng_evaluation *evaluation = NULL; | |
3e6e0df2 JG |
83 | const struct lttng_notification_comm *notification_comm; |
84 | const struct lttng_payload_view notification_comm_view = | |
85 | lttng_payload_view_from_view( | |
86 | src_view, 0, sizeof(*notification_comm)); | |
a58c490f JG |
87 | |
88 | if (!src_view || !notification) { | |
89 | ret = -1; | |
f58ae8ad | 90 | goto error; |
a58c490f JG |
91 | } |
92 | ||
3e6e0df2 JG |
93 | if (!lttng_payload_view_is_valid(¬ification_comm_view)) { |
94 | /* Payload not large enough to contain the header. */ | |
95 | ret = -1; | |
f58ae8ad | 96 | goto error; |
3e6e0df2 JG |
97 | } |
98 | ||
99 | notification_comm = (typeof(notification_comm)) notification_comm_view.buffer.data; | |
a58c490f | 100 | notification_size += sizeof(*notification_comm); |
c0a66c84 JG |
101 | { |
102 | /* struct lttng_condition */ | |
103 | struct lttng_payload_view condition_view = | |
104 | lttng_payload_view_from_view(src_view, | |
105 | notification_size, -1); | |
106 | ||
f58ae8ad | 107 | trigger_size = lttng_trigger_create_from_payload( |
52d55cf9 | 108 | &condition_view, &trigger); |
c0a66c84 | 109 | } |
a58c490f | 110 | |
f58ae8ad JG |
111 | if (trigger_size < 0) { |
112 | ret = trigger_size; | |
113 | goto error; | |
a58c490f | 114 | } |
c0a66c84 | 115 | |
f58ae8ad | 116 | notification_size += trigger_size; |
a58c490f | 117 | |
c0a66c84 JG |
118 | { |
119 | /* struct lttng_evaluation */ | |
120 | struct lttng_payload_view evaluation_view = | |
121 | lttng_payload_view_from_view(src_view, | |
122 | notification_size, -1); | |
123 | ||
124 | evaluation_size = lttng_evaluation_create_from_payload( | |
52d55cf9 JG |
125 | lttng_trigger_get_const_condition(trigger), |
126 | &evaluation_view, &evaluation); | |
c0a66c84 JG |
127 | } |
128 | ||
a58c490f JG |
129 | if (evaluation_size < 0) { |
130 | ret = evaluation_size; | |
f58ae8ad | 131 | goto error; |
a58c490f | 132 | } |
c0a66c84 | 133 | |
a58c490f JG |
134 | notification_size += evaluation_size; |
135 | ||
136 | /* Unexpected size of inner-elements; the buffer is corrupted. */ | |
137 | if ((ssize_t) notification_comm->length != | |
f58ae8ad | 138 | trigger_size + evaluation_size) { |
a58c490f JG |
139 | ret = -1; |
140 | goto error; | |
141 | } | |
142 | ||
52d55cf9 | 143 | *notification = lttng_notification_create(trigger, evaluation); |
a58c490f JG |
144 | if (!*notification) { |
145 | ret = -1; | |
146 | goto error; | |
147 | } | |
f58ae8ad | 148 | |
a58c490f | 149 | ret = notification_size; |
a58c490f | 150 | return ret; |
f58ae8ad | 151 | |
a58c490f | 152 | error: |
52d55cf9 | 153 | lttng_trigger_destroy(trigger); |
a58c490f JG |
154 | lttng_evaluation_destroy(evaluation); |
155 | return ret; | |
156 | } | |
157 | ||
158 | void lttng_notification_destroy(struct lttng_notification *notification) | |
159 | { | |
160 | if (!notification) { | |
161 | return; | |
162 | } | |
163 | ||
52d55cf9 | 164 | lttng_trigger_destroy(notification->trigger); |
9b63a4aa | 165 | lttng_evaluation_destroy(notification->evaluation); |
a58c490f JG |
166 | free(notification); |
167 | } | |
168 | ||
169 | const struct lttng_condition *lttng_notification_get_condition( | |
170 | struct lttng_notification *notification) | |
171 | { | |
52d55cf9 | 172 | return notification ? lttng_trigger_get_const_condition(notification->trigger) : NULL; |
a58c490f JG |
173 | } |
174 | ||
175 | const struct lttng_evaluation *lttng_notification_get_evaluation( | |
176 | struct lttng_notification *notification) | |
177 | { | |
178 | return notification ? notification->evaluation : NULL; | |
179 | } | |
6bec8cb2 JG |
180 | |
181 | const struct lttng_trigger *lttng_notification_get_trigger( | |
182 | struct lttng_notification *notification) | |
183 | { | |
184 | return notification ? notification->trigger : NULL; | |
185 | } |