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a58c490f 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/action/action-internal.h> | |
19 | #include <lttng/action/notify-internal.h> | |
20 | #include <common/error.h> | |
21 | #include <assert.h> | |
22 | ||
23 | enum lttng_action_type lttng_action_get_type(struct lttng_action *action) | |
24 | { | |
25 | return action ? action->type : LTTNG_ACTION_TYPE_UNKNOWN; | |
26 | } | |
27 | ||
28 | void lttng_action_destroy(struct lttng_action *action) | |
29 | { | |
30 | if (!action) { | |
31 | return; | |
32 | } | |
33 | ||
34 | assert(action->destroy); | |
35 | action->destroy(action); | |
36 | } | |
37 | ||
38 | LTTNG_HIDDEN | |
39 | bool lttng_action_validate(struct lttng_action *action) | |
40 | { | |
41 | bool valid; | |
42 | ||
43 | if (!action) { | |
44 | valid = false; | |
45 | goto end; | |
46 | } | |
47 | ||
48 | if (!action->validate) { | |
49 | /* Sub-class guarantees that it can never be invalid. */ | |
50 | valid = true; | |
51 | goto end; | |
52 | } | |
53 | ||
54 | valid = action->validate(action); | |
55 | end: | |
56 | return valid; | |
57 | } | |
58 | ||
59 | LTTNG_HIDDEN | |
3647288f JG |
60 | int lttng_action_serialize(struct lttng_action *action, |
61 | struct lttng_dynamic_buffer *buf) | |
a58c490f | 62 | { |
3647288f JG |
63 | int ret; |
64 | struct lttng_action_comm action_comm = { | |
65 | .action_type = (int8_t) action->type, | |
66 | }; | |
67 | ||
68 | ret = lttng_dynamic_buffer_append(buf, &action_comm, | |
69 | sizeof(action_comm)); | |
70 | if (ret) { | |
a58c490f JG |
71 | goto end; |
72 | } | |
73 | ||
3647288f JG |
74 | ret = action->serialize(action, buf); |
75 | if (ret) { | |
a58c490f JG |
76 | goto end; |
77 | } | |
a58c490f JG |
78 | end: |
79 | return ret; | |
80 | } | |
81 | ||
82 | LTTNG_HIDDEN | |
83 | ssize_t lttng_action_create_from_buffer(const struct lttng_buffer_view *view, | |
84 | struct lttng_action **_action) | |
85 | { | |
86 | ssize_t ret, action_size = sizeof(struct lttng_action_comm); | |
87 | struct lttng_action *action; | |
88 | const struct lttng_action_comm *action_comm; | |
89 | ||
90 | if (!view || !_action) { | |
91 | ret = -1; | |
92 | goto end; | |
93 | } | |
94 | ||
95 | action_comm = (const struct lttng_action_comm *) view->data; | |
96 | DBG("Deserializing action from buffer"); | |
97 | switch (action_comm->action_type) { | |
98 | case LTTNG_ACTION_TYPE_NOTIFY: | |
99 | action = lttng_action_notify_create(); | |
100 | break; | |
101 | default: | |
102 | ret = -1; | |
103 | goto end; | |
104 | } | |
105 | ||
106 | if (!action) { | |
107 | ret = -1; | |
108 | goto end; | |
109 | } | |
110 | ret = action_size; | |
111 | *_action = action; | |
112 | end: | |
113 | return ret; | |
114 | } |