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 | 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 | ||
a6bc4ca9 | 27 | notification = (lttng_notification *) zmalloc(sizeof(struct 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; | |
1e9e2705 | 43 | struct lttng_notification_comm notification_comm = { 0 }; |
3647288f | 44 | struct lttng_notification_comm *header; |
a58c490f | 45 | |
c0a66c84 JG |
46 | header_offset = payload->buffer.size; |
47 | ret = lttng_dynamic_buffer_append(&payload->buffer, ¬ification_comm, | |
3647288f | 48 | sizeof(notification_comm)); |
28cff59f JG |
49 | if (ret) { |
50 | goto end; | |
51 | } | |
a58c490f | 52 | |
c0a66c84 | 53 | size_before_payload = payload->buffer.size; |
52d55cf9 | 54 | ret = lttng_trigger_serialize(notification->trigger, |
c0a66c84 | 55 | payload); |
3647288f | 56 | if (ret) { |
a58c490f JG |
57 | goto end; |
58 | } | |
a58c490f | 59 | |
c0a66c84 | 60 | ret = lttng_evaluation_serialize(notification->evaluation, payload); |
3647288f | 61 | if (ret) { |
a58c490f JG |
62 | goto end; |
63 | } | |
a58c490f | 64 | |
3647288f | 65 | /* Update payload size. */ |
c0a66c84 JG |
66 | header = (typeof(header)) (payload->buffer.data + header_offset); |
67 | header->length = (uint32_t) (payload->buffer.size - size_before_payload); | |
a58c490f JG |
68 | end: |
69 | return ret; | |
70 | ||
71 | } | |
72 | ||
c0a66c84 JG |
73 | ssize_t lttng_notification_create_from_payload( |
74 | struct lttng_payload_view *src_view, | |
a58c490f JG |
75 | struct lttng_notification **notification) |
76 | { | |
f58ae8ad JG |
77 | ssize_t ret, notification_size = 0, trigger_size, evaluation_size; |
78 | struct lttng_trigger *trigger = NULL; | |
79 | struct lttng_evaluation *evaluation = NULL; | |
3e6e0df2 JG |
80 | const struct lttng_notification_comm *notification_comm; |
81 | const struct lttng_payload_view notification_comm_view = | |
82 | lttng_payload_view_from_view( | |
83 | src_view, 0, sizeof(*notification_comm)); | |
a58c490f JG |
84 | |
85 | if (!src_view || !notification) { | |
86 | ret = -1; | |
f58ae8ad | 87 | goto error; |
a58c490f JG |
88 | } |
89 | ||
3e6e0df2 JG |
90 | if (!lttng_payload_view_is_valid(¬ification_comm_view)) { |
91 | /* Payload not large enough to contain the header. */ | |
92 | ret = -1; | |
f58ae8ad | 93 | goto error; |
3e6e0df2 JG |
94 | } |
95 | ||
96 | notification_comm = (typeof(notification_comm)) notification_comm_view.buffer.data; | |
a58c490f | 97 | notification_size += sizeof(*notification_comm); |
c0a66c84 JG |
98 | { |
99 | /* struct lttng_condition */ | |
100 | struct lttng_payload_view condition_view = | |
101 | lttng_payload_view_from_view(src_view, | |
102 | notification_size, -1); | |
103 | ||
f58ae8ad | 104 | trigger_size = lttng_trigger_create_from_payload( |
52d55cf9 | 105 | &condition_view, &trigger); |
c0a66c84 | 106 | } |
a58c490f | 107 | |
f58ae8ad JG |
108 | if (trigger_size < 0) { |
109 | ret = trigger_size; | |
110 | goto error; | |
a58c490f | 111 | } |
c0a66c84 | 112 | |
f58ae8ad | 113 | notification_size += trigger_size; |
a58c490f | 114 | |
c0a66c84 JG |
115 | { |
116 | /* struct lttng_evaluation */ | |
117 | struct lttng_payload_view evaluation_view = | |
118 | lttng_payload_view_from_view(src_view, | |
119 | notification_size, -1); | |
120 | ||
121 | evaluation_size = lttng_evaluation_create_from_payload( | |
52d55cf9 JG |
122 | lttng_trigger_get_const_condition(trigger), |
123 | &evaluation_view, &evaluation); | |
c0a66c84 JG |
124 | } |
125 | ||
a58c490f JG |
126 | if (evaluation_size < 0) { |
127 | ret = evaluation_size; | |
f58ae8ad | 128 | goto error; |
a58c490f | 129 | } |
c0a66c84 | 130 | |
a58c490f JG |
131 | notification_size += evaluation_size; |
132 | ||
133 | /* Unexpected size of inner-elements; the buffer is corrupted. */ | |
134 | if ((ssize_t) notification_comm->length != | |
f58ae8ad | 135 | trigger_size + evaluation_size) { |
a58c490f JG |
136 | ret = -1; |
137 | goto error; | |
138 | } | |
139 | ||
52d55cf9 | 140 | *notification = lttng_notification_create(trigger, evaluation); |
a58c490f JG |
141 | if (!*notification) { |
142 | ret = -1; | |
143 | goto error; | |
144 | } | |
f58ae8ad | 145 | |
a58c490f | 146 | ret = notification_size; |
a58c490f | 147 | return ret; |
f58ae8ad | 148 | |
a58c490f | 149 | error: |
52d55cf9 | 150 | lttng_trigger_destroy(trigger); |
a58c490f JG |
151 | lttng_evaluation_destroy(evaluation); |
152 | return ret; | |
153 | } | |
154 | ||
155 | void lttng_notification_destroy(struct lttng_notification *notification) | |
156 | { | |
157 | if (!notification) { | |
158 | return; | |
159 | } | |
160 | ||
52d55cf9 | 161 | lttng_trigger_destroy(notification->trigger); |
9b63a4aa | 162 | lttng_evaluation_destroy(notification->evaluation); |
a58c490f JG |
163 | free(notification); |
164 | } | |
165 | ||
166 | const struct lttng_condition *lttng_notification_get_condition( | |
167 | struct lttng_notification *notification) | |
168 | { | |
52d55cf9 | 169 | return notification ? lttng_trigger_get_const_condition(notification->trigger) : NULL; |
a58c490f JG |
170 | } |
171 | ||
172 | const struct lttng_evaluation *lttng_notification_get_evaluation( | |
173 | struct lttng_notification *notification) | |
174 | { | |
175 | return notification ? notification->evaluation : NULL; | |
176 | } | |
6bec8cb2 JG |
177 | |
178 | const struct lttng_trigger *lttng_notification_get_trigger( | |
179 | struct lttng_notification *notification) | |
180 | { | |
181 | return notification ? notification->trigger : NULL; | |
182 | } |