Commit | Line | Data |
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33b34c43 PP |
1 | /* |
2 | * plugin.c | |
3 | * | |
55bb57e0 | 4 | * Babeltrace Plugin (generic) |
33b34c43 PP |
5 | * |
6 | * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
7 | * Copyright 2017 Philippe Proulx <pproulx@efficios.com> | |
8 | * | |
9 | * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
10 | * | |
11 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
12 | * of this software and associated documentation files (the "Software"), to deal | |
13 | * in the Software without restriction, including without limitation the rights | |
14 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
15 | * copies of the Software, and to permit persons to whom the Software is | |
16 | * furnished to do so, subject to the following conditions: | |
17 | * | |
18 | * The above copyright notice and this permission notice shall be included in | |
19 | * all copies or substantial portions of the Software. | |
20 | * | |
21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
22 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
23 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
24 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
25 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
26 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
27 | * SOFTWARE. | |
28 | */ | |
29 | ||
30 | #include <babeltrace/compiler.h> | |
31 | #include <babeltrace/ref.h> | |
1670bffd | 32 | #include <babeltrace/common-internal.h> |
33b34c43 | 33 | #include <babeltrace/plugin/plugin-internal.h> |
55bb57e0 | 34 | #include <babeltrace/plugin/plugin-so-internal.h> |
33b34c43 | 35 | #include <glib.h> |
33b34c43 PP |
36 | #include <unistd.h> |
37 | #include <stdlib.h> | |
38 | #include <sys/stat.h> | |
39 | #include <dirent.h> | |
40 | ||
55bb57e0 PP |
41 | #ifdef WITH_PYTHON_PLUGINS |
42 | # include <babeltrace/plugin/plugin-python-enabled-internal.h> | |
43 | #else | |
44 | # include <babeltrace/plugin/plugin-python-disabled-internal.h> | |
45 | #endif | |
33b34c43 | 46 | |
33b34c43 | 47 | static |
55bb57e0 | 48 | void bt_plugin_destroy(struct bt_object *obj) |
33b34c43 | 49 | { |
55bb57e0 | 50 | struct bt_plugin *plugin; |
33b34c43 PP |
51 | |
52 | assert(obj); | |
55bb57e0 | 53 | plugin = container_of(obj, struct bt_plugin, base); |
6ba0b073 | 54 | |
55bb57e0 PP |
55 | if (plugin->type == BT_PLUGIN_TYPE_SO) { |
56 | bt_plugin_so_destroy_spec_data(plugin); | |
57 | } else if (plugin->type == BT_PLUGIN_TYPE_PYTHON) { | |
58 | bt_plugin_python_destroy_spec_data(plugin); | |
59 | } else { | |
60 | assert(false); | |
33b34c43 PP |
61 | } |
62 | ||
55bb57e0 PP |
63 | if (plugin->comp_classes) { |
64 | g_ptr_array_free(plugin->comp_classes, TRUE); | |
33b34c43 PP |
65 | } |
66 | ||
55bb57e0 PP |
67 | if (plugin->info.name) { |
68 | g_string_free(plugin->info.name, TRUE); | |
33b34c43 PP |
69 | } |
70 | ||
55bb57e0 PP |
71 | if (plugin->info.path) { |
72 | g_string_free(plugin->info.path, TRUE); | |
33b34c43 PP |
73 | } |
74 | ||
55bb57e0 PP |
75 | if (plugin->info.description) { |
76 | g_string_free(plugin->info.description, TRUE); | |
33b34c43 PP |
77 | } |
78 | ||
55bb57e0 PP |
79 | if (plugin->info.author) { |
80 | g_string_free(plugin->info.author, TRUE); | |
33b34c43 PP |
81 | } |
82 | ||
55bb57e0 PP |
83 | if (plugin->info.license) { |
84 | g_string_free(plugin->info.license, TRUE); | |
33b34c43 PP |
85 | } |
86 | ||
55bb57e0 PP |
87 | if (plugin->info.version.extra) { |
88 | g_string_free(plugin->info.version.extra, TRUE); | |
33b34c43 PP |
89 | } |
90 | ||
91 | g_free(plugin); | |
92 | } | |
93 | ||
55bb57e0 PP |
94 | BT_HIDDEN |
95 | struct bt_plugin *bt_plugin_create_empty(enum bt_plugin_type type) | |
6ba0b073 PP |
96 | { |
97 | struct bt_plugin *plugin = NULL; | |
98 | ||
99 | plugin = g_new0(struct bt_plugin, 1); | |
100 | if (!plugin) { | |
101 | goto error; | |
102 | } | |
103 | ||
104 | bt_object_init(plugin, bt_plugin_destroy); | |
55bb57e0 | 105 | plugin->type = type; |
6ba0b073 PP |
106 | |
107 | /* Create empty array of component classes */ | |
108 | plugin->comp_classes = | |
109 | g_ptr_array_new_with_free_func((GDestroyNotify) bt_put); | |
110 | if (!plugin->comp_classes) { | |
111 | goto error; | |
112 | } | |
113 | ||
55bb57e0 PP |
114 | /* Create empty info */ |
115 | plugin->info.name = g_string_new(NULL); | |
116 | if (!plugin->info.name) { | |
117 | goto error; | |
6ba0b073 PP |
118 | } |
119 | ||
55bb57e0 PP |
120 | plugin->info.path = g_string_new(NULL); |
121 | if (!plugin->info.path) { | |
122 | goto error; | |
6ba0b073 PP |
123 | } |
124 | ||
55bb57e0 PP |
125 | plugin->info.description = g_string_new(NULL); |
126 | if (!plugin->info.description) { | |
127 | goto error; | |
33b34c43 PP |
128 | } |
129 | ||
55bb57e0 PP |
130 | plugin->info.author = g_string_new(NULL); |
131 | if (!plugin->info.author) { | |
132 | goto error; | |
6ba0b073 PP |
133 | } |
134 | ||
55bb57e0 PP |
135 | plugin->info.license = g_string_new(NULL); |
136 | if (!plugin->info.license) { | |
6ba0b073 PP |
137 | goto error; |
138 | } | |
139 | ||
55bb57e0 PP |
140 | plugin->info.version.extra = g_string_new(NULL); |
141 | if (!plugin->info.version.extra) { | |
142 | goto error; | |
6ba0b073 PP |
143 | } |
144 | ||
145 | goto end; | |
146 | ||
147 | error: | |
55bb57e0 | 148 | BT_PUT(plugin); |
6ba0b073 PP |
149 | |
150 | end: | |
55bb57e0 | 151 | return plugin; |
6ba0b073 PP |
152 | } |
153 | ||
154 | struct bt_plugin **bt_plugin_create_all_from_static(void) | |
155 | { | |
55bb57e0 | 156 | return bt_plugin_so_create_all_from_static(); |
6ba0b073 PP |
157 | } |
158 | ||
159 | struct bt_plugin **bt_plugin_create_all_from_file(const char *path) | |
33b34c43 | 160 | { |
6ba0b073 | 161 | struct bt_plugin **plugins = NULL; |
33b34c43 PP |
162 | |
163 | if (!path) { | |
6ba0b073 | 164 | goto end; |
33b34c43 PP |
165 | } |
166 | ||
55bb57e0 | 167 | printf_verbose("Trying to load plugins from `%s`\n", path); |
6ba0b073 | 168 | |
55bb57e0 PP |
169 | /* Try shared object plugins */ |
170 | plugins = bt_plugin_so_create_all_from_file(path); | |
171 | if (plugins) { | |
6ba0b073 PP |
172 | goto end; |
173 | } | |
174 | ||
55bb57e0 PP |
175 | plugins = bt_plugin_python_create_all_from_file(path); |
176 | if (plugins) { | |
6ba0b073 PP |
177 | goto end; |
178 | } | |
179 | ||
33b34c43 | 180 | end: |
6ba0b073 | 181 | return plugins; |
33b34c43 PP |
182 | } |
183 | ||
1670bffd PP |
184 | static void destroy_gstring(void *data) |
185 | { | |
186 | g_string_free(data, TRUE); | |
187 | } | |
188 | ||
189 | void free_plugins(struct bt_plugin **plugins) { | |
190 | if (plugins) { | |
191 | struct bt_plugin **cur_plugin = plugins; | |
192 | ||
193 | while (*cur_plugin) { | |
194 | bt_put(*cur_plugin); | |
195 | cur_plugin++; | |
196 | } | |
197 | ||
198 | free(plugins); | |
199 | } | |
200 | } | |
201 | ||
202 | struct bt_plugin *bt_plugin_create_from_name(const char *plugin_name) | |
203 | { | |
204 | const char *system_plugin_dir; | |
205 | char *home_plugin_dir = NULL; | |
206 | const char *envvar; | |
207 | struct bt_plugin *plugin = NULL; | |
208 | struct bt_plugin **plugins = NULL; | |
209 | struct bt_plugin **cur_plugin; | |
210 | GPtrArray *dirs = NULL; | |
211 | int ret; | |
212 | size_t i; | |
213 | ||
214 | if (!plugin_name) { | |
215 | goto end; | |
216 | } | |
217 | ||
218 | dirs = g_ptr_array_new_with_free_func((GDestroyNotify) destroy_gstring); | |
219 | if (!dirs) { | |
220 | goto end; | |
221 | } | |
222 | ||
223 | /* | |
224 | * Search order is: | |
225 | * | |
226 | * 1. BABELTRACE_PLUGIN_PATH environment variable | |
227 | * (colon-separated list of directories) | |
228 | * 2. ~/.local/lib/babeltrace/plugins | |
229 | * 3. Default system directory for Babeltrace plugins, usually | |
230 | * /usr/lib/babeltrace/plugins or | |
231 | * /usr/local/lib/babeltrace/plugins if installed | |
232 | * locally | |
233 | * 4. Built-in plugins (static) | |
234 | * | |
235 | * Directories are searched non-recursively. | |
236 | */ | |
237 | envvar = getenv("BABELTRACE_PLUGIN_PATH"); | |
238 | if (envvar) { | |
239 | ret = bt_common_append_plugin_path_dirs(envvar, dirs); | |
240 | if (ret) { | |
241 | goto end; | |
242 | } | |
243 | } | |
244 | ||
245 | home_plugin_dir = bt_common_get_home_plugin_path(); | |
246 | if (home_plugin_dir) { | |
247 | GString *home_plugin_dir_str = | |
248 | g_string_new(home_plugin_dir); | |
249 | ||
250 | if (!home_plugin_dir_str) { | |
251 | goto end; | |
252 | } | |
253 | ||
254 | g_ptr_array_add(dirs, home_plugin_dir_str); | |
255 | } | |
256 | ||
257 | system_plugin_dir = bt_common_get_system_plugin_path(); | |
258 | if (system_plugin_dir) { | |
259 | GString *system_plugin_dir_str = | |
260 | g_string_new(system_plugin_dir); | |
261 | ||
262 | if (!system_plugin_dir_str) { | |
263 | goto end; | |
264 | } | |
265 | ||
266 | g_ptr_array_add(dirs, system_plugin_dir_str); | |
267 | } | |
268 | ||
269 | for (i = 0; i < dirs->len; i++) { | |
270 | GString *dir = g_ptr_array_index(dirs, i); | |
271 | ||
272 | printf_verbose("Trying to load plugins from directory `%s`\n", | |
273 | dir->str); | |
274 | free_plugins(plugins); | |
275 | plugins = bt_plugin_create_all_from_dir(dir->str, false); | |
276 | if (!plugins) { | |
277 | continue; | |
278 | } | |
279 | ||
280 | cur_plugin = plugins; | |
281 | ||
282 | while (*cur_plugin) { | |
283 | if (strcmp(bt_plugin_get_name(*cur_plugin), plugin_name) | |
284 | == 0) { | |
285 | plugin = bt_get(*cur_plugin); | |
286 | goto end; | |
287 | } | |
288 | ||
289 | cur_plugin++; | |
290 | } | |
291 | } | |
292 | ||
293 | free_plugins(plugins); | |
294 | plugins = bt_plugin_create_all_from_static(); | |
295 | cur_plugin = plugins; | |
296 | ||
297 | while (*cur_plugin) { | |
298 | if (strcmp(bt_plugin_get_name(*cur_plugin), plugin_name) == 0) { | |
299 | plugin = bt_get(*cur_plugin); | |
300 | goto end; | |
301 | } | |
302 | ||
303 | cur_plugin++; | |
304 | } | |
305 | ||
306 | end: | |
307 | free(home_plugin_dir); | |
308 | free_plugins(plugins); | |
309 | ||
310 | if (dirs) { | |
311 | g_ptr_array_free(dirs, TRUE); | |
312 | } | |
313 | ||
314 | return plugin; | |
315 | } | |
316 | ||
33b34c43 PP |
317 | /* Allocate dirent as recommended by READDIR(3), NOTES on readdir_r */ |
318 | static | |
319 | struct dirent *alloc_dirent(const char *path) | |
320 | { | |
321 | size_t len; | |
322 | long name_max; | |
323 | struct dirent *entry; | |
324 | ||
325 | name_max = pathconf(path, _PC_NAME_MAX); | |
326 | if (name_max == -1) { | |
327 | name_max = PATH_MAX; | |
328 | } | |
329 | len = offsetof(struct dirent, d_name) + name_max + 1; | |
330 | entry = zmalloc(len); | |
331 | return entry; | |
332 | } | |
333 | ||
334 | static | |
335 | enum bt_plugin_status bt_plugin_create_append_all_from_dir( | |
336 | GPtrArray *plugins, const char *path, bool recurse) | |
337 | { | |
338 | DIR *directory = NULL; | |
339 | struct dirent *entry = NULL, *result = NULL; | |
340 | char *file_path = NULL; | |
6ba0b073 | 341 | size_t path_len; |
33b34c43 PP |
342 | enum bt_plugin_status ret = BT_PLUGIN_STATUS_OK; |
343 | ||
6ba0b073 PP |
344 | if (!path) { |
345 | ret = BT_PLUGIN_STATUS_ERROR; | |
346 | goto end; | |
347 | } | |
348 | ||
349 | path_len = strlen(path); | |
350 | ||
33b34c43 PP |
351 | if (path_len >= PATH_MAX) { |
352 | ret = BT_PLUGIN_STATUS_ERROR; | |
353 | goto end; | |
354 | } | |
355 | ||
356 | entry = alloc_dirent(path); | |
357 | if (!entry) { | |
358 | ret = BT_PLUGIN_STATUS_ERROR; | |
359 | goto end; | |
360 | } | |
361 | ||
362 | file_path = zmalloc(PATH_MAX); | |
363 | if (!file_path) { | |
364 | ret = BT_PLUGIN_STATUS_NOMEM; | |
365 | goto end; | |
366 | } | |
367 | ||
368 | strncpy(file_path, path, path_len); | |
369 | /* Append a trailing '/' to the path */ | |
370 | if (file_path[path_len - 1] != '/') { | |
371 | file_path[path_len++] = '/'; | |
372 | } | |
373 | ||
374 | directory = opendir(file_path); | |
375 | if (!directory) { | |
376 | perror("Failed to open plug-in directory"); | |
377 | ret = BT_PLUGIN_STATUS_ERROR; | |
378 | goto end; | |
379 | } | |
380 | ||
381 | /* Recursively walk directory */ | |
382 | while (!readdir_r(directory, entry, &result) && result) { | |
383 | struct stat st; | |
384 | int stat_ret; | |
385 | size_t file_name_len; | |
386 | ||
387 | if (result->d_name[0] == '.') { | |
388 | /* Skip hidden files, . and .. */ | |
389 | continue; | |
390 | } | |
391 | ||
392 | file_name_len = strlen(result->d_name); | |
393 | ||
394 | if (path_len + file_name_len >= PATH_MAX) { | |
395 | continue; | |
396 | } | |
397 | ||
398 | strncpy(file_path + path_len, result->d_name, file_name_len); | |
399 | file_path[path_len + file_name_len] = '\0'; | |
33b34c43 PP |
400 | stat_ret = stat(file_path, &st); |
401 | if (stat_ret < 0) { | |
402 | /* Continue to next file / directory. */ | |
403 | printf_perror("Failed to stat() plugin file\n"); | |
404 | continue; | |
405 | } | |
406 | ||
407 | if (S_ISDIR(st.st_mode) && recurse) { | |
408 | ret = bt_plugin_create_append_all_from_dir(plugins, | |
409 | file_path, true); | |
410 | if (ret < 0) { | |
411 | goto end; | |
412 | } | |
413 | } else if (S_ISREG(st.st_mode)) { | |
6ba0b073 PP |
414 | struct bt_plugin **plugins_from_file = |
415 | bt_plugin_create_all_from_file(file_path); | |
33b34c43 | 416 | |
6ba0b073 PP |
417 | if (plugins_from_file) { |
418 | struct bt_plugin **plugin; | |
419 | ||
420 | for (plugin = plugins_from_file; *plugin; plugin++) { | |
421 | /* Transfer ownership to array */ | |
422 | g_ptr_array_add(plugins, *plugin); | |
423 | } | |
424 | ||
425 | free(plugins_from_file); | |
33b34c43 PP |
426 | } |
427 | } | |
428 | } | |
429 | end: | |
430 | if (directory) { | |
431 | if (closedir(directory)) { | |
432 | /* | |
433 | * We don't want to override the error since there is | |
434 | * nothing could do. | |
435 | */ | |
436 | perror("Failed to close plug-in directory"); | |
437 | } | |
438 | } | |
439 | free(entry); | |
440 | free(file_path); | |
441 | return ret; | |
442 | } | |
443 | ||
444 | struct bt_plugin **bt_plugin_create_all_from_dir(const char *path, | |
445 | bool recurse) | |
446 | { | |
6ba0b073 | 447 | GPtrArray *plugins_array = g_ptr_array_new(); |
33b34c43 PP |
448 | struct bt_plugin **plugins = NULL; |
449 | enum bt_plugin_status status; | |
450 | ||
33b34c43 PP |
451 | /* Append found plugins to array */ |
452 | status = bt_plugin_create_append_all_from_dir(plugins_array, path, | |
453 | recurse); | |
454 | if (status < 0) { | |
455 | goto error; | |
456 | } | |
457 | ||
458 | /* Add sentinel to array */ | |
459 | g_ptr_array_add(plugins_array, NULL); | |
460 | plugins = (struct bt_plugin **) plugins_array->pdata; | |
461 | goto end; | |
462 | ||
463 | error: | |
464 | if (plugins_array) { | |
465 | g_ptr_array_free(plugins_array, TRUE); | |
466 | plugins_array = NULL; | |
467 | } | |
468 | ||
469 | end: | |
470 | if (plugins_array) { | |
471 | g_ptr_array_free(plugins_array, FALSE); | |
472 | } | |
473 | ||
474 | return plugins; | |
475 | } | |
476 | ||
33b34c43 PP |
477 | const char *bt_plugin_get_name(struct bt_plugin *plugin) |
478 | { | |
55bb57e0 | 479 | return plugin && plugin->info.name_set ? plugin->info.name->str : NULL; |
33b34c43 PP |
480 | } |
481 | ||
482 | const char *bt_plugin_get_author(struct bt_plugin *plugin) | |
483 | { | |
55bb57e0 | 484 | return plugin && plugin->info.author_set ? plugin->info.author->str : NULL; |
33b34c43 PP |
485 | } |
486 | ||
487 | const char *bt_plugin_get_license(struct bt_plugin *plugin) | |
488 | { | |
55bb57e0 | 489 | return plugin && plugin->info.license_set ? plugin->info.license->str : NULL; |
33b34c43 PP |
490 | } |
491 | ||
492 | const char *bt_plugin_get_path(struct bt_plugin *plugin) | |
493 | { | |
55bb57e0 | 494 | return plugin && plugin->info.path_set ? plugin->info.path->str : NULL; |
33b34c43 PP |
495 | } |
496 | ||
497 | const char *bt_plugin_get_description(struct bt_plugin *plugin) | |
498 | { | |
55bb57e0 | 499 | return plugin && plugin->info.description_set ? plugin->info.description->str : NULL; |
33b34c43 PP |
500 | } |
501 | ||
b6de043b PP |
502 | enum bt_plugin_status bt_plugin_get_version(struct bt_plugin *plugin, |
503 | unsigned int *major, unsigned int *minor, unsigned int *patch, | |
504 | const char **extra) | |
505 | { | |
506 | enum bt_plugin_status status = BT_PLUGIN_STATUS_OK; | |
507 | ||
55bb57e0 | 508 | if (!plugin || !plugin->info.version_set) { |
b6de043b PP |
509 | status = BT_PLUGIN_STATUS_ERROR; |
510 | goto end; | |
511 | } | |
512 | ||
513 | if (major) { | |
55bb57e0 | 514 | *major = plugin->info.version.major; |
b6de043b PP |
515 | } |
516 | ||
517 | if (minor) { | |
55bb57e0 | 518 | *minor = plugin->info.version.minor; |
b6de043b PP |
519 | } |
520 | ||
521 | if (patch) { | |
55bb57e0 | 522 | *patch = plugin->info.version.patch; |
b6de043b PP |
523 | } |
524 | ||
525 | if (extra) { | |
55bb57e0 | 526 | *extra = plugin->info.version.extra->str; |
b6de043b PP |
527 | } |
528 | ||
529 | end: | |
530 | return status; | |
531 | } | |
532 | ||
33b34c43 PP |
533 | int bt_plugin_get_component_class_count(struct bt_plugin *plugin) |
534 | { | |
535 | return plugin ? plugin->comp_classes->len : -1; | |
536 | } | |
537 | ||
538 | struct bt_component_class *bt_plugin_get_component_class( | |
539 | struct bt_plugin *plugin, size_t index) | |
540 | { | |
541 | struct bt_component_class *comp_class = NULL; | |
542 | ||
543 | if (!plugin || index >= plugin->comp_classes->len) { | |
544 | goto error; | |
545 | } | |
546 | ||
547 | comp_class = g_ptr_array_index(plugin->comp_classes, index); | |
548 | bt_get(comp_class); | |
549 | goto end; | |
550 | ||
551 | error: | |
552 | BT_PUT(comp_class); | |
553 | ||
554 | end: | |
555 | return comp_class; | |
556 | } | |
557 | ||
558 | struct bt_component_class *bt_plugin_get_component_class_by_name_and_type( | |
559 | struct bt_plugin *plugin, const char *name, | |
d3e4dcd8 | 560 | enum bt_component_class_type type) |
33b34c43 PP |
561 | { |
562 | struct bt_component_class *comp_class = NULL; | |
563 | size_t i; | |
564 | ||
565 | if (!plugin || !name) { | |
566 | goto error; | |
567 | } | |
568 | ||
569 | for (i = 0; i < plugin->comp_classes->len; i++) { | |
570 | struct bt_component_class *comp_class_candidate = | |
571 | g_ptr_array_index(plugin->comp_classes, i); | |
572 | const char *comp_class_cand_name = | |
573 | bt_component_class_get_name(comp_class_candidate); | |
d3e4dcd8 | 574 | enum bt_component_class_type comp_class_cand_type = |
33b34c43 PP |
575 | bt_component_class_get_type(comp_class_candidate); |
576 | ||
577 | assert(comp_class_cand_name); | |
578 | assert(comp_class_cand_type >= 0); | |
579 | ||
580 | if (strcmp(name, comp_class_cand_name) == 0 && | |
581 | comp_class_cand_type == type) { | |
582 | comp_class = bt_get(comp_class_candidate); | |
583 | break; | |
584 | } | |
585 | } | |
586 | ||
587 | goto end; | |
588 | ||
589 | error: | |
590 | BT_PUT(comp_class); | |
591 | ||
592 | end: | |
593 | return comp_class; | |
594 | } | |
595 | ||
33b34c43 PP |
596 | enum bt_plugin_status bt_plugin_add_component_class( |
597 | struct bt_plugin *plugin, struct bt_component_class *comp_class) | |
598 | { | |
599 | enum bt_plugin_status status = BT_PLUGIN_STATUS_OK; | |
600 | struct bt_component_class *comp_class_dup = NULL; | |
601 | int ret; | |
602 | int comp_class_index = -1; | |
603 | ||
604 | if (!plugin || !comp_class || plugin->frozen) { | |
605 | goto error; | |
606 | } | |
607 | ||
608 | /* Check for duplicate */ | |
609 | comp_class_dup = bt_plugin_get_component_class_by_name_and_type(plugin, | |
610 | bt_component_class_get_name(comp_class), | |
611 | bt_component_class_get_type(comp_class)); | |
612 | if (comp_class_dup) { | |
613 | printf_verbose("Plugin `%s`: adding component class with existing name `%s` and type %d\n", | |
55bb57e0 | 614 | bt_plugin_get_name(plugin), |
33b34c43 PP |
615 | bt_component_class_get_name(comp_class), |
616 | bt_component_class_get_type(comp_class)); | |
617 | goto error; | |
618 | } | |
619 | ||
620 | /* Add new component class */ | |
621 | comp_class_index = plugin->comp_classes->len; | |
622 | g_ptr_array_add(plugin->comp_classes, bt_get(comp_class)); | |
623 | ||
55bb57e0 PP |
624 | /* Special case for a shared object plugin */ |
625 | if (plugin->type == BT_PLUGIN_TYPE_SO) { | |
626 | ret = bt_plugin_so_on_add_component_class(plugin, comp_class); | |
627 | if (ret) { | |
628 | goto error; | |
629 | } | |
33b34c43 PP |
630 | } |
631 | ||
632 | goto end; | |
633 | ||
634 | error: | |
33b34c43 PP |
635 | /* Remove entry from plugin's component classes (if added) */ |
636 | if (comp_class_index >= 0) { | |
637 | g_ptr_array_remove_index(plugin->comp_classes, | |
638 | comp_class_index); | |
639 | } | |
640 | ||
641 | status = BT_PLUGIN_STATUS_ERROR; | |
642 | ||
643 | end: | |
644 | bt_put(comp_class_dup); | |
645 | return status; | |
646 | } |