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a87af0fd 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> | |
b01b8a99 | 19 | #include <lttng/action/notify-internal.h> |
a87af0fd JG |
20 | #include <assert.h> |
21 | ||
22 | enum lttng_action_type lttng_action_get_type(struct lttng_action *action) | |
23 | { | |
24 | return action ? action->type : LTTNG_ACTION_TYPE_UNKNOWN; | |
25 | } | |
26 | ||
27 | void lttng_action_destroy(struct lttng_action *action) | |
28 | { | |
29 | if (!action) { | |
30 | return; | |
31 | } | |
32 | ||
33 | assert(action->destroy); | |
34 | action->destroy(action); | |
35 | } | |
36 | ||
37 | LTTNG_HIDDEN | |
38 | bool lttng_action_validate(struct lttng_action *action) | |
39 | { | |
40 | bool valid; | |
41 | ||
42 | if (!action) { | |
43 | valid = false; | |
44 | goto end; | |
45 | } | |
46 | ||
47 | if (!action->validate) { | |
48 | /* Sub-class guarantees that it can never be invalid. */ | |
49 | valid = true; | |
50 | goto end; | |
51 | } | |
52 | ||
53 | valid = action->validate(action); | |
54 | end: | |
55 | return valid; | |
56 | } | |
2a38b722 JG |
57 | |
58 | LTTNG_HIDDEN | |
59 | ssize_t lttng_action_serialize(struct lttng_action *action, char *buf) | |
60 | { | |
61 | ssize_t ret, action_size; | |
62 | struct lttng_action_comm action_comm; | |
63 | ||
64 | if (!action) { | |
65 | ret = -1; | |
66 | goto end; | |
67 | } | |
68 | ||
69 | action_comm.action_type = (int8_t) action->type; | |
70 | ret = sizeof(struct lttng_action_comm); | |
71 | if (buf) { | |
72 | memcpy(buf, &action_comm, ret); | |
73 | buf += ret; | |
74 | } | |
75 | ||
76 | action_size = action->serialize(action, buf); | |
77 | if (action_size < 0) { | |
78 | ret = action_size; | |
79 | goto end; | |
80 | } | |
81 | ret += action_size; | |
82 | end: | |
83 | return ret; | |
84 | } | |
b01b8a99 JG |
85 | |
86 | LTTNG_HIDDEN | |
87 | ssize_t lttng_action_create_from_buffer(const char *buf, | |
88 | struct lttng_action **_action) | |
89 | { | |
90 | ssize_t ret, action_size = sizeof(struct lttng_action_comm); | |
91 | struct lttng_action *action; | |
92 | struct lttng_action_comm *action_comm = | |
93 | (struct lttng_action_comm *) buf; | |
94 | ||
95 | if (!buf || !_action) { | |
96 | ret = -1; | |
97 | goto end; | |
98 | } | |
99 | ||
100 | switch (action_comm->action_type) { | |
101 | case LTTNG_ACTION_TYPE_NOTIFY: | |
102 | action = lttng_action_notify_create(); | |
103 | break; | |
104 | default: | |
105 | ret = -1; | |
106 | goto end; | |
107 | } | |
108 | ||
109 | if (!action) { | |
110 | ret = -1; | |
111 | goto end; | |
112 | } | |
113 | ret = action_size; | |
114 | *_action = action; | |
115 | end: | |
116 | return ret; | |
117 | } |