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 | ||
6fbd4105 | 30 | #include <babeltrace/babeltrace-internal.h> |
33b34c43 PP |
31 | #include <babeltrace/compiler.h> |
32 | #include <babeltrace/ref.h> | |
1670bffd | 33 | #include <babeltrace/common-internal.h> |
33b34c43 | 34 | #include <babeltrace/plugin/plugin-internal.h> |
55bb57e0 | 35 | #include <babeltrace/plugin/plugin-so-internal.h> |
33b34c43 | 36 | #include <glib.h> |
33b34c43 PP |
37 | #include <unistd.h> |
38 | #include <stdlib.h> | |
39 | #include <sys/stat.h> | |
40 | #include <dirent.h> | |
41 | ||
6fbd4105 PP |
42 | #define PYTHON_PLUGIN_PROVIDER_FILENAME "libbabeltrace-python-plugin-provider." G_MODULE_SUFFIX |
43 | #define PYTHON_PLUGIN_PROVIDER_SYM_NAME bt_plugin_python_create_all_from_file | |
44 | #define PYTHON_PLUGIN_PROVIDER_SYM_NAME_STR TOSTRING(PYTHON_PLUGIN_PROVIDER_SYM_NAME) | |
33b34c43 | 45 | |
6fbd4105 PP |
46 | #ifdef BT_BUILT_IN_PYTHON_PLUGIN_SUPPORT |
47 | #include <babeltrace/plugin/python-plugin-provider-internal.h> | |
33b34c43 | 48 | static |
6fbd4105 PP |
49 | struct bt_plugin **(*bt_plugin_python_create_all_from_file_sym)(const char *path) = |
50 | bt_plugin_python_create_all_from_file; | |
51 | #else /* BT_BUILT_IN_PYTHON_PLUGIN_SUPPORT */ | |
52 | static GModule *python_plugin_provider_module; | |
53 | static | |
54 | struct bt_plugin **(*bt_plugin_python_create_all_from_file_sym)(const char *path); | |
33b34c43 | 55 | |
6fbd4105 PP |
56 | __attribute__((constructor)) static |
57 | void init_python_plugin_provider(void) { | |
58 | python_plugin_provider_module = | |
59 | g_module_open(PYTHON_PLUGIN_PROVIDER_FILENAME, | |
60 | G_MODULE_BIND_LOCAL); | |
61 | if (!python_plugin_provider_module) { | |
62 | printf_warning("Cannot find `%s`: Python plugin support is disabled\n", | |
63 | PYTHON_PLUGIN_PROVIDER_FILENAME); | |
64 | return; | |
33b34c43 PP |
65 | } |
66 | ||
6fbd4105 PP |
67 | if (!g_module_symbol(python_plugin_provider_module, |
68 | PYTHON_PLUGIN_PROVIDER_SYM_NAME_STR, | |
69 | (gpointer) &bt_plugin_python_create_all_from_file_sym)) { | |
70 | printf_warning("Cannot find the Python plugin provider loading symbole: Python plugin support is disabled\n"); | |
33b34c43 | 71 | } |
33b34c43 PP |
72 | } |
73 | ||
6fbd4105 PP |
74 | __attribute__((destructor)) static |
75 | void fini_python_plugin_provider(void) { | |
76 | if (python_plugin_provider_module) { | |
77 | (void) g_module_close(python_plugin_provider_module); | |
78 | python_plugin_provider_module = NULL; | |
6ba0b073 | 79 | } |
6ba0b073 | 80 | } |
6fbd4105 | 81 | #endif |
6ba0b073 PP |
82 | |
83 | struct bt_plugin **bt_plugin_create_all_from_static(void) | |
84 | { | |
55bb57e0 | 85 | return bt_plugin_so_create_all_from_static(); |
6ba0b073 PP |
86 | } |
87 | ||
88 | struct bt_plugin **bt_plugin_create_all_from_file(const char *path) | |
33b34c43 | 89 | { |
6ba0b073 | 90 | struct bt_plugin **plugins = NULL; |
33b34c43 PP |
91 | |
92 | if (!path) { | |
6ba0b073 | 93 | goto end; |
33b34c43 PP |
94 | } |
95 | ||
55bb57e0 | 96 | printf_verbose("Trying to load plugins from `%s`\n", path); |
6ba0b073 | 97 | |
55bb57e0 PP |
98 | /* Try shared object plugins */ |
99 | plugins = bt_plugin_so_create_all_from_file(path); | |
100 | if (plugins) { | |
6ba0b073 PP |
101 | goto end; |
102 | } | |
103 | ||
6fbd4105 PP |
104 | /* Try Python plugins if support is available */ |
105 | if (bt_plugin_python_create_all_from_file_sym) { | |
106 | plugins = bt_plugin_python_create_all_from_file_sym(path); | |
107 | if (plugins) { | |
108 | goto end; | |
109 | } | |
6ba0b073 PP |
110 | } |
111 | ||
33b34c43 | 112 | end: |
6ba0b073 | 113 | return plugins; |
33b34c43 PP |
114 | } |
115 | ||
1670bffd PP |
116 | static void destroy_gstring(void *data) |
117 | { | |
118 | g_string_free(data, TRUE); | |
119 | } | |
120 | ||
121 | void free_plugins(struct bt_plugin **plugins) { | |
122 | if (plugins) { | |
123 | struct bt_plugin **cur_plugin = plugins; | |
124 | ||
125 | while (*cur_plugin) { | |
126 | bt_put(*cur_plugin); | |
127 | cur_plugin++; | |
128 | } | |
129 | ||
130 | free(plugins); | |
131 | } | |
132 | } | |
133 | ||
134 | struct bt_plugin *bt_plugin_create_from_name(const char *plugin_name) | |
135 | { | |
136 | const char *system_plugin_dir; | |
137 | char *home_plugin_dir = NULL; | |
138 | const char *envvar; | |
139 | struct bt_plugin *plugin = NULL; | |
140 | struct bt_plugin **plugins = NULL; | |
141 | struct bt_plugin **cur_plugin; | |
142 | GPtrArray *dirs = NULL; | |
143 | int ret; | |
144 | size_t i; | |
145 | ||
146 | if (!plugin_name) { | |
147 | goto end; | |
148 | } | |
149 | ||
150 | dirs = g_ptr_array_new_with_free_func((GDestroyNotify) destroy_gstring); | |
151 | if (!dirs) { | |
152 | goto end; | |
153 | } | |
154 | ||
155 | /* | |
156 | * Search order is: | |
157 | * | |
158 | * 1. BABELTRACE_PLUGIN_PATH environment variable | |
159 | * (colon-separated list of directories) | |
160 | * 2. ~/.local/lib/babeltrace/plugins | |
161 | * 3. Default system directory for Babeltrace plugins, usually | |
162 | * /usr/lib/babeltrace/plugins or | |
163 | * /usr/local/lib/babeltrace/plugins if installed | |
164 | * locally | |
165 | * 4. Built-in plugins (static) | |
166 | * | |
167 | * Directories are searched non-recursively. | |
168 | */ | |
169 | envvar = getenv("BABELTRACE_PLUGIN_PATH"); | |
170 | if (envvar) { | |
171 | ret = bt_common_append_plugin_path_dirs(envvar, dirs); | |
172 | if (ret) { | |
173 | goto end; | |
174 | } | |
175 | } | |
176 | ||
177 | home_plugin_dir = bt_common_get_home_plugin_path(); | |
178 | if (home_plugin_dir) { | |
179 | GString *home_plugin_dir_str = | |
180 | g_string_new(home_plugin_dir); | |
181 | ||
182 | if (!home_plugin_dir_str) { | |
183 | goto end; | |
184 | } | |
185 | ||
186 | g_ptr_array_add(dirs, home_plugin_dir_str); | |
187 | } | |
188 | ||
189 | system_plugin_dir = bt_common_get_system_plugin_path(); | |
190 | if (system_plugin_dir) { | |
191 | GString *system_plugin_dir_str = | |
192 | g_string_new(system_plugin_dir); | |
193 | ||
194 | if (!system_plugin_dir_str) { | |
195 | goto end; | |
196 | } | |
197 | ||
198 | g_ptr_array_add(dirs, system_plugin_dir_str); | |
199 | } | |
200 | ||
201 | for (i = 0; i < dirs->len; i++) { | |
202 | GString *dir = g_ptr_array_index(dirs, i); | |
203 | ||
204 | printf_verbose("Trying to load plugins from directory `%s`\n", | |
205 | dir->str); | |
206 | free_plugins(plugins); | |
207 | plugins = bt_plugin_create_all_from_dir(dir->str, false); | |
208 | if (!plugins) { | |
209 | continue; | |
210 | } | |
211 | ||
212 | cur_plugin = plugins; | |
213 | ||
214 | while (*cur_plugin) { | |
215 | if (strcmp(bt_plugin_get_name(*cur_plugin), plugin_name) | |
216 | == 0) { | |
217 | plugin = bt_get(*cur_plugin); | |
218 | goto end; | |
219 | } | |
220 | ||
221 | cur_plugin++; | |
222 | } | |
223 | } | |
224 | ||
225 | free_plugins(plugins); | |
226 | plugins = bt_plugin_create_all_from_static(); | |
227 | cur_plugin = plugins; | |
228 | ||
229 | while (*cur_plugin) { | |
230 | if (strcmp(bt_plugin_get_name(*cur_plugin), plugin_name) == 0) { | |
231 | plugin = bt_get(*cur_plugin); | |
232 | goto end; | |
233 | } | |
234 | ||
235 | cur_plugin++; | |
236 | } | |
237 | ||
238 | end: | |
239 | free(home_plugin_dir); | |
240 | free_plugins(plugins); | |
241 | ||
242 | if (dirs) { | |
243 | g_ptr_array_free(dirs, TRUE); | |
244 | } | |
245 | ||
246 | return plugin; | |
247 | } | |
248 | ||
33b34c43 PP |
249 | /* Allocate dirent as recommended by READDIR(3), NOTES on readdir_r */ |
250 | static | |
251 | struct dirent *alloc_dirent(const char *path) | |
252 | { | |
253 | size_t len; | |
254 | long name_max; | |
255 | struct dirent *entry; | |
256 | ||
257 | name_max = pathconf(path, _PC_NAME_MAX); | |
258 | if (name_max == -1) { | |
259 | name_max = PATH_MAX; | |
260 | } | |
261 | len = offsetof(struct dirent, d_name) + name_max + 1; | |
262 | entry = zmalloc(len); | |
263 | return entry; | |
264 | } | |
265 | ||
266 | static | |
267 | enum bt_plugin_status bt_plugin_create_append_all_from_dir( | |
268 | GPtrArray *plugins, const char *path, bool recurse) | |
269 | { | |
270 | DIR *directory = NULL; | |
271 | struct dirent *entry = NULL, *result = NULL; | |
272 | char *file_path = NULL; | |
6ba0b073 | 273 | size_t path_len; |
33b34c43 PP |
274 | enum bt_plugin_status ret = BT_PLUGIN_STATUS_OK; |
275 | ||
6ba0b073 PP |
276 | if (!path) { |
277 | ret = BT_PLUGIN_STATUS_ERROR; | |
278 | goto end; | |
279 | } | |
280 | ||
281 | path_len = strlen(path); | |
282 | ||
33b34c43 PP |
283 | if (path_len >= PATH_MAX) { |
284 | ret = BT_PLUGIN_STATUS_ERROR; | |
285 | goto end; | |
286 | } | |
287 | ||
288 | entry = alloc_dirent(path); | |
289 | if (!entry) { | |
290 | ret = BT_PLUGIN_STATUS_ERROR; | |
291 | goto end; | |
292 | } | |
293 | ||
294 | file_path = zmalloc(PATH_MAX); | |
295 | if (!file_path) { | |
296 | ret = BT_PLUGIN_STATUS_NOMEM; | |
297 | goto end; | |
298 | } | |
299 | ||
300 | strncpy(file_path, path, path_len); | |
301 | /* Append a trailing '/' to the path */ | |
302 | if (file_path[path_len - 1] != '/') { | |
303 | file_path[path_len++] = '/'; | |
304 | } | |
305 | ||
306 | directory = opendir(file_path); | |
307 | if (!directory) { | |
308 | perror("Failed to open plug-in directory"); | |
309 | ret = BT_PLUGIN_STATUS_ERROR; | |
310 | goto end; | |
311 | } | |
312 | ||
313 | /* Recursively walk directory */ | |
314 | while (!readdir_r(directory, entry, &result) && result) { | |
315 | struct stat st; | |
316 | int stat_ret; | |
317 | size_t file_name_len; | |
318 | ||
319 | if (result->d_name[0] == '.') { | |
320 | /* Skip hidden files, . and .. */ | |
321 | continue; | |
322 | } | |
323 | ||
324 | file_name_len = strlen(result->d_name); | |
325 | ||
326 | if (path_len + file_name_len >= PATH_MAX) { | |
327 | continue; | |
328 | } | |
329 | ||
330 | strncpy(file_path + path_len, result->d_name, file_name_len); | |
331 | file_path[path_len + file_name_len] = '\0'; | |
33b34c43 PP |
332 | stat_ret = stat(file_path, &st); |
333 | if (stat_ret < 0) { | |
334 | /* Continue to next file / directory. */ | |
335 | printf_perror("Failed to stat() plugin file\n"); | |
336 | continue; | |
337 | } | |
338 | ||
339 | if (S_ISDIR(st.st_mode) && recurse) { | |
340 | ret = bt_plugin_create_append_all_from_dir(plugins, | |
341 | file_path, true); | |
342 | if (ret < 0) { | |
343 | goto end; | |
344 | } | |
345 | } else if (S_ISREG(st.st_mode)) { | |
6ba0b073 PP |
346 | struct bt_plugin **plugins_from_file = |
347 | bt_plugin_create_all_from_file(file_path); | |
33b34c43 | 348 | |
6ba0b073 PP |
349 | if (plugins_from_file) { |
350 | struct bt_plugin **plugin; | |
351 | ||
352 | for (plugin = plugins_from_file; *plugin; plugin++) { | |
353 | /* Transfer ownership to array */ | |
354 | g_ptr_array_add(plugins, *plugin); | |
355 | } | |
356 | ||
357 | free(plugins_from_file); | |
33b34c43 PP |
358 | } |
359 | } | |
360 | } | |
361 | end: | |
362 | if (directory) { | |
363 | if (closedir(directory)) { | |
364 | /* | |
365 | * We don't want to override the error since there is | |
366 | * nothing could do. | |
367 | */ | |
368 | perror("Failed to close plug-in directory"); | |
369 | } | |
370 | } | |
371 | free(entry); | |
372 | free(file_path); | |
373 | return ret; | |
374 | } | |
375 | ||
376 | struct bt_plugin **bt_plugin_create_all_from_dir(const char *path, | |
377 | bool recurse) | |
378 | { | |
6ba0b073 | 379 | GPtrArray *plugins_array = g_ptr_array_new(); |
33b34c43 PP |
380 | struct bt_plugin **plugins = NULL; |
381 | enum bt_plugin_status status; | |
382 | ||
33b34c43 PP |
383 | /* Append found plugins to array */ |
384 | status = bt_plugin_create_append_all_from_dir(plugins_array, path, | |
385 | recurse); | |
386 | if (status < 0) { | |
387 | goto error; | |
388 | } | |
389 | ||
390 | /* Add sentinel to array */ | |
391 | g_ptr_array_add(plugins_array, NULL); | |
392 | plugins = (struct bt_plugin **) plugins_array->pdata; | |
393 | goto end; | |
394 | ||
395 | error: | |
396 | if (plugins_array) { | |
397 | g_ptr_array_free(plugins_array, TRUE); | |
398 | plugins_array = NULL; | |
399 | } | |
400 | ||
401 | end: | |
402 | if (plugins_array) { | |
403 | g_ptr_array_free(plugins_array, FALSE); | |
404 | } | |
405 | ||
406 | return plugins; | |
407 | } | |
408 | ||
33b34c43 PP |
409 | const char *bt_plugin_get_name(struct bt_plugin *plugin) |
410 | { | |
55bb57e0 | 411 | return plugin && plugin->info.name_set ? plugin->info.name->str : NULL; |
33b34c43 PP |
412 | } |
413 | ||
414 | const char *bt_plugin_get_author(struct bt_plugin *plugin) | |
415 | { | |
55bb57e0 | 416 | return plugin && plugin->info.author_set ? plugin->info.author->str : NULL; |
33b34c43 PP |
417 | } |
418 | ||
419 | const char *bt_plugin_get_license(struct bt_plugin *plugin) | |
420 | { | |
55bb57e0 | 421 | return plugin && plugin->info.license_set ? plugin->info.license->str : NULL; |
33b34c43 PP |
422 | } |
423 | ||
424 | const char *bt_plugin_get_path(struct bt_plugin *plugin) | |
425 | { | |
55bb57e0 | 426 | return plugin && plugin->info.path_set ? plugin->info.path->str : NULL; |
33b34c43 PP |
427 | } |
428 | ||
429 | const char *bt_plugin_get_description(struct bt_plugin *plugin) | |
430 | { | |
55bb57e0 | 431 | return plugin && plugin->info.description_set ? plugin->info.description->str : NULL; |
33b34c43 PP |
432 | } |
433 | ||
b6de043b PP |
434 | enum bt_plugin_status bt_plugin_get_version(struct bt_plugin *plugin, |
435 | unsigned int *major, unsigned int *minor, unsigned int *patch, | |
436 | const char **extra) | |
437 | { | |
438 | enum bt_plugin_status status = BT_PLUGIN_STATUS_OK; | |
439 | ||
55bb57e0 | 440 | if (!plugin || !plugin->info.version_set) { |
b6de043b PP |
441 | status = BT_PLUGIN_STATUS_ERROR; |
442 | goto end; | |
443 | } | |
444 | ||
445 | if (major) { | |
55bb57e0 | 446 | *major = plugin->info.version.major; |
b6de043b PP |
447 | } |
448 | ||
449 | if (minor) { | |
55bb57e0 | 450 | *minor = plugin->info.version.minor; |
b6de043b PP |
451 | } |
452 | ||
453 | if (patch) { | |
55bb57e0 | 454 | *patch = plugin->info.version.patch; |
b6de043b PP |
455 | } |
456 | ||
457 | if (extra) { | |
55bb57e0 | 458 | *extra = plugin->info.version.extra->str; |
b6de043b PP |
459 | } |
460 | ||
461 | end: | |
462 | return status; | |
463 | } | |
464 | ||
33b34c43 PP |
465 | int bt_plugin_get_component_class_count(struct bt_plugin *plugin) |
466 | { | |
467 | return plugin ? plugin->comp_classes->len : -1; | |
468 | } | |
469 | ||
470 | struct bt_component_class *bt_plugin_get_component_class( | |
471 | struct bt_plugin *plugin, size_t index) | |
472 | { | |
473 | struct bt_component_class *comp_class = NULL; | |
474 | ||
475 | if (!plugin || index >= plugin->comp_classes->len) { | |
476 | goto error; | |
477 | } | |
478 | ||
479 | comp_class = g_ptr_array_index(plugin->comp_classes, index); | |
480 | bt_get(comp_class); | |
481 | goto end; | |
482 | ||
483 | error: | |
484 | BT_PUT(comp_class); | |
485 | ||
486 | end: | |
487 | return comp_class; | |
488 | } | |
489 | ||
490 | struct bt_component_class *bt_plugin_get_component_class_by_name_and_type( | |
491 | struct bt_plugin *plugin, const char *name, | |
d3e4dcd8 | 492 | enum bt_component_class_type type) |
33b34c43 PP |
493 | { |
494 | struct bt_component_class *comp_class = NULL; | |
495 | size_t i; | |
496 | ||
497 | if (!plugin || !name) { | |
498 | goto error; | |
499 | } | |
500 | ||
501 | for (i = 0; i < plugin->comp_classes->len; i++) { | |
502 | struct bt_component_class *comp_class_candidate = | |
503 | g_ptr_array_index(plugin->comp_classes, i); | |
504 | const char *comp_class_cand_name = | |
505 | bt_component_class_get_name(comp_class_candidate); | |
d3e4dcd8 | 506 | enum bt_component_class_type comp_class_cand_type = |
33b34c43 PP |
507 | bt_component_class_get_type(comp_class_candidate); |
508 | ||
509 | assert(comp_class_cand_name); | |
510 | assert(comp_class_cand_type >= 0); | |
511 | ||
512 | if (strcmp(name, comp_class_cand_name) == 0 && | |
513 | comp_class_cand_type == type) { | |
514 | comp_class = bt_get(comp_class_candidate); | |
515 | break; | |
516 | } | |
517 | } | |
518 | ||
519 | goto end; | |
520 | ||
521 | error: | |
522 | BT_PUT(comp_class); | |
523 | ||
524 | end: | |
525 | return comp_class; | |
526 | } | |
527 | ||
33b34c43 PP |
528 | enum bt_plugin_status bt_plugin_add_component_class( |
529 | struct bt_plugin *plugin, struct bt_component_class *comp_class) | |
530 | { | |
531 | enum bt_plugin_status status = BT_PLUGIN_STATUS_OK; | |
532 | struct bt_component_class *comp_class_dup = NULL; | |
533 | int ret; | |
534 | int comp_class_index = -1; | |
535 | ||
536 | if (!plugin || !comp_class || plugin->frozen) { | |
537 | goto error; | |
538 | } | |
539 | ||
540 | /* Check for duplicate */ | |
541 | comp_class_dup = bt_plugin_get_component_class_by_name_and_type(plugin, | |
542 | bt_component_class_get_name(comp_class), | |
543 | bt_component_class_get_type(comp_class)); | |
544 | if (comp_class_dup) { | |
545 | printf_verbose("Plugin `%s`: adding component class with existing name `%s` and type %d\n", | |
55bb57e0 | 546 | bt_plugin_get_name(plugin), |
33b34c43 PP |
547 | bt_component_class_get_name(comp_class), |
548 | bt_component_class_get_type(comp_class)); | |
549 | goto error; | |
550 | } | |
551 | ||
552 | /* Add new component class */ | |
553 | comp_class_index = plugin->comp_classes->len; | |
554 | g_ptr_array_add(plugin->comp_classes, bt_get(comp_class)); | |
555 | ||
55bb57e0 PP |
556 | /* Special case for a shared object plugin */ |
557 | if (plugin->type == BT_PLUGIN_TYPE_SO) { | |
558 | ret = bt_plugin_so_on_add_component_class(plugin, comp_class); | |
559 | if (ret) { | |
560 | goto error; | |
561 | } | |
33b34c43 PP |
562 | } |
563 | ||
564 | goto end; | |
565 | ||
566 | error: | |
33b34c43 PP |
567 | /* Remove entry from plugin's component classes (if added) */ |
568 | if (comp_class_index >= 0) { | |
569 | g_ptr_array_remove_index(plugin->comp_classes, | |
570 | comp_class_index); | |
571 | } | |
572 | ||
573 | status = BT_PLUGIN_STATUS_ERROR; | |
574 | ||
575 | end: | |
576 | bt_put(comp_class_dup); | |
577 | return status; | |
578 | } |