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d8866baa PP |
1 | /* |
2 | * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation | |
3 | * Copyright 2017 Philippe Proulx <jeremie.galarneau@efficios.com> | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
6 | * of this software and associated documentation files (the "Software"), to deal | |
7 | * in the Software without restriction, including without limitation the rights | |
8 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
9 | * copies of the Software, and to permit persons to whom the Software is | |
10 | * furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
21 | * SOFTWARE. | |
22 | */ | |
23 | ||
24 | #include <stdbool.h> | |
25 | #include <stdio.h> | |
26 | #include <assert.h> | |
27 | #include <babeltrace/babeltrace-internal.h> | |
28 | #include <babeltrace/graph/component.h> | |
29 | #include <babeltrace/graph/clock-class-priority-map.h> | |
30 | #include <glib.h> | |
31 | ||
32 | struct dmesg_component; | |
33 | ||
34 | struct dmesg_notif_iter { | |
35 | struct dmesg_component *dmesg_comp; | |
36 | FILE *fp; | |
37 | }; | |
38 | ||
39 | struct dmesg_component { | |
40 | struct { | |
41 | GString *path; | |
42 | bool read_from_stdin; | |
43 | } params; | |
44 | ||
45 | struct bt_ctf_packet *packet; | |
46 | struct bt_ctf_event_class *event_class; | |
47 | struct bt_ctf_stream *stream; | |
48 | struct bt_clock_class_priority_map *cc_prio_map; | |
49 | }; | |
50 | ||
51 | static | |
52 | int check_params(struct dmesg_component *dmesg_comp, struct bt_value *params) | |
53 | { | |
54 | struct bt_value *read_from_stdin; | |
55 | struct bt_value *path; | |
56 | const char *path_str; | |
57 | int ret = 0; | |
58 | ||
59 | if (!params || !bt_value_is_map(params)) { | |
60 | fprintf(stderr, "Expecting a map value as parameters.\n"); | |
61 | goto error; | |
62 | } | |
63 | ||
64 | read_from_stdin = bt_value_map_get(params, "read-from-stdin"); | |
65 | if (read_from_stdin) { | |
66 | if (!bt_value_is_bool(read_from_stdin)) { | |
67 | fprintf(stderr, "Expecting a boolean value for `read-from-stdin` parameter.\n"); | |
68 | goto error; | |
69 | } | |
70 | ||
71 | ret = bt_value_bool_get(read_from_stdin, | |
72 | &dmesg_comp->params.read_from_stdin); | |
73 | assert(ret == 0); | |
74 | } | |
75 | ||
76 | path = bt_value_map_get(params, "path"); | |
77 | if (path) { | |
78 | if (dmesg_comp->params.read_from_stdin) { | |
79 | fprintf(stderr, "Cannot specify both `read-from-stdin` and `path` parameters.\n"); | |
80 | goto error; | |
81 | } | |
82 | ||
83 | if (!bt_value_is_string(path)) { | |
84 | fprintf(stderr, "Expecting a string value for `path` parameter.\n"); | |
85 | goto error; | |
86 | } | |
87 | ||
88 | ret = bt_value_bool_get(path, &path_str); | |
89 | assert(ret == 0); | |
90 | g_string_assign(dmesg_comp->params.path, path_str); | |
91 | } else { | |
92 | if (!dmesg_comp->params.read_from_stdin) { | |
93 | fprintf(stderr, "Expecting `path` parameter or `read-from-stdin` parameter set to true.\n"); | |
94 | goto error; | |
95 | } | |
96 | } | |
97 | ||
98 | goto end; | |
99 | ||
100 | error: | |
101 | ret = -1; | |
102 | ||
103 | end: | |
104 | bt_put(read_from_stdin); | |
105 | bt_put(path); | |
106 | return ret; | |
107 | } | |
108 | ||
109 | static | |
110 | int create_stream() | |
111 | ||
112 | static | |
113 | void destroy_dmesg_component(struct dmesg_component *dmesg_comp) | |
114 | { | |
115 | if (!dmesg_comp) { | |
116 | return; | |
117 | } | |
118 | ||
119 | if (dmesg_comp->params.path) { | |
120 | g_string_free(dmesg_comp->params.path, TRUE); | |
121 | } | |
122 | ||
123 | bt_put(dmesg_comp->packet); | |
124 | bt_put(dmesg_comp->event_class); | |
125 | bt_put(dmesg_comp->stream); | |
126 | bt_put(dmesg_comp->cc_prio_map); | |
127 | g_free(dmesg_comp); | |
128 | } | |
129 | ||
130 | BT_HIDDEN | |
131 | enum bt_component_status dmesg_init(struct bt_private_component *priv_comp, | |
132 | struct bt_value *params, void *init_method_data) | |
133 | { | |
134 | int ret = 0; | |
135 | struct dmesg_component *dmesg_comp = g_new0(struct dmesg_component, 1); | |
136 | enum bt_component_status status = BT_COMPONENT_STATUS_OK; | |
137 | ||
138 | if (!dmesg_comp) { | |
139 | goto error; | |
140 | } | |
141 | ||
142 | dmesg_comp->params.path = g_string_new(NULL); | |
143 | if (!dmesg_comp->params.path) { | |
144 | goto error; | |
145 | } | |
146 | ||
147 | ret = check_params(dmesg_comp, params); | |
148 | if (ret) { | |
149 | goto error; | |
150 | } | |
151 | ||
152 | ||
153 | ||
154 | goto end; | |
155 | ||
156 | error: | |
157 | destroy_dmesg_component(dmesg_comp); | |
158 | status = BT_COMPONENT_STATUS_ERROR; | |
159 | ||
160 | end: | |
161 | return status; | |
162 | } | |
163 | ||
164 | BT_HIDDEN | |
165 | void dmesg_finalize(struct bt_private_component *priv_comp) | |
166 | { | |
167 | ||
168 | } | |
169 | ||
170 | BT_HIDDEN | |
171 | enum bt_notification_iterator_status dmesg_notif_iter_init( | |
172 | struct bt_private_notification_iterator *priv_notif_iter, | |
173 | struct bt_private_port *priv_port) | |
174 | { | |
175 | ||
176 | } | |
177 | ||
178 | BT_HIDDEN | |
179 | void dmesg_iterator_finalize( | |
180 | struct bt_private_notification_iterator *priv_notif_iter) | |
181 | { | |
182 | ||
183 | } | |
184 | ||
185 | BT_HIDDEN | |
186 | struct bt_notification_iterator_next_return dmesg_notif_iter_next( | |
187 | struct bt_private_notification_iterator *priv_notif_iter) | |
188 | { | |
189 | ||
190 | } |