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b99a0cb3 JG |
1 | /* |
2 | * error-query.c | |
3 | * | |
4 | * Copyright (C) 2021 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
5 | * | |
6 | * SPDX-License-Identifier: GPL-2.1-only | |
7 | * | |
8 | */ | |
9 | ||
10 | #include <common/dynamic-array.h> | |
11 | #include <common/error.h> | |
12 | #include <common/macros.h> | |
13 | #include <common/sessiond-comm/sessiond-comm.h> | |
14 | #include <lttng/action/action-internal.h> | |
ad63a966 | 15 | #include <lttng/action/list-internal.h> |
27993cc2 | 16 | #include <lttng/action/path-internal.h> |
b99a0cb3 JG |
17 | #include <lttng/error-query-internal.h> |
18 | #include <lttng/error-query.h> | |
19 | #include <lttng/trigger/trigger-internal.h> | |
20 | #include <stddef.h> | |
21 | ||
22 | struct lttng_error_query { | |
23 | enum lttng_error_query_target_type target_type; | |
24 | }; | |
25 | ||
26 | struct lttng_error_query_comm { | |
27 | /* enum lttng_error_query_target_type */ | |
28 | int8_t target_type; | |
29 | /* Target-specific payload. */ | |
30 | char payload[]; | |
31 | }; | |
32 | ||
33 | struct lttng_error_query_trigger { | |
34 | struct lttng_error_query parent; | |
35 | /* Mutable only because of the reference count. */ | |
36 | struct lttng_trigger *trigger; | |
37 | }; | |
38 | ||
63dd3d7b JG |
39 | struct lttng_error_query_condition { |
40 | struct lttng_error_query parent; | |
41 | /* Mutable only because of the reference count. */ | |
42 | struct lttng_trigger *trigger; | |
43 | }; | |
44 | ||
b99a0cb3 JG |
45 | struct lttng_error_query_action { |
46 | struct lttng_error_query parent; | |
47 | /* Mutable only because of the reference count. */ | |
48 | struct lttng_trigger *trigger; | |
cb9222ff | 49 | struct lttng_action_path action_path; |
b99a0cb3 JG |
50 | }; |
51 | ||
52 | struct lttng_error_query_result { | |
53 | enum lttng_error_query_result_type type; | |
54 | char *name; | |
55 | char *description; | |
56 | }; | |
57 | ||
58 | struct lttng_error_query_result_comm { | |
59 | /* enum lttng_error_query_result_type */ | |
60 | uint8_t type; | |
61 | /* Length of name (including null-terminator). */ | |
62 | uint32_t name_len; | |
63 | /* Length of description (including null-terminator). */ | |
64 | uint32_t description_len; | |
65 | /* Name, description, and type-specific payload follow. */ | |
66 | char payload[]; | |
67 | } LTTNG_PACKED; | |
68 | ||
69 | struct lttng_error_query_result_counter_comm { | |
70 | uint64_t value; | |
71 | } LTTNG_PACKED; | |
72 | ||
73 | struct lttng_error_query_result_counter { | |
74 | struct lttng_error_query_result parent; | |
75 | uint64_t value; | |
76 | }; | |
77 | ||
78 | struct lttng_error_query_results_comm { | |
79 | uint32_t count; | |
80 | /* `count` instances of `struct lttng_error_query_result` follow. */ | |
81 | char payload[]; | |
82 | } LTTNG_PACKED; | |
83 | ||
84 | struct lttng_error_query_results { | |
85 | struct lttng_dynamic_pointer_array results; | |
86 | }; | |
87 | ||
88 | ||
89 | struct lttng_error_query *lttng_error_query_trigger_create( | |
90 | const struct lttng_trigger *trigger) | |
91 | { | |
92 | struct lttng_error_query_trigger *query = NULL; | |
3746c278 | 93 | struct lttng_trigger *trigger_copy = NULL; |
b99a0cb3 | 94 | |
3746c278 | 95 | if (!trigger) { |
b99a0cb3 JG |
96 | goto end; |
97 | } | |
98 | ||
3746c278 JG |
99 | trigger_copy = lttng_trigger_copy(trigger); |
100 | if (!trigger_copy) { | |
b99a0cb3 JG |
101 | goto end; |
102 | } | |
103 | ||
104 | query = zmalloc(sizeof(*query)); | |
105 | if (!query) { | |
106 | PERROR("Failed to allocate trigger error query"); | |
3746c278 | 107 | goto error; |
b99a0cb3 JG |
108 | } |
109 | ||
110 | query->parent.target_type = LTTNG_ERROR_QUERY_TARGET_TYPE_TRIGGER; | |
111 | query->trigger = trigger_copy; | |
3746c278 JG |
112 | trigger_copy = NULL; |
113 | ||
114 | error: | |
115 | lttng_trigger_put(trigger_copy); | |
b99a0cb3 JG |
116 | end: |
117 | return query ? &query->parent : NULL; | |
118 | } | |
119 | ||
63dd3d7b JG |
120 | struct lttng_error_query *lttng_error_query_condition_create( |
121 | const struct lttng_trigger *trigger) | |
122 | { | |
123 | struct lttng_error_query_condition *query = NULL; | |
124 | struct lttng_trigger *trigger_copy = NULL; | |
125 | ||
126 | if (!trigger) { | |
127 | goto end; | |
128 | } | |
129 | ||
130 | trigger_copy = lttng_trigger_copy(trigger); | |
131 | if (!trigger_copy) { | |
132 | goto end; | |
133 | } | |
134 | ||
135 | query = zmalloc(sizeof(*query)); | |
136 | if (!query) { | |
137 | PERROR("Failed to allocate condition error query"); | |
138 | goto error; | |
139 | } | |
140 | ||
141 | query->parent.target_type = LTTNG_ERROR_QUERY_TARGET_TYPE_CONDITION; | |
142 | query->trigger = trigger_copy; | |
143 | trigger_copy = NULL; | |
144 | ||
145 | error: | |
146 | lttng_trigger_put(trigger_copy); | |
147 | end: | |
148 | return query ? &query->parent : NULL; | |
149 | } | |
150 | ||
cb9222ff JG |
151 | static |
152 | struct lttng_action *get_trigger_action_from_path( | |
153 | struct lttng_trigger *trigger, | |
154 | const struct lttng_action_path *action_path) | |
b99a0cb3 | 155 | { |
cb9222ff JG |
156 | size_t index_count, i; |
157 | enum lttng_action_path_status path_status; | |
158 | struct lttng_action *current_action = NULL; | |
b99a0cb3 | 159 | |
cb9222ff JG |
160 | path_status = lttng_action_path_get_index_count( |
161 | action_path, &index_count); | |
162 | if (path_status != LTTNG_ACTION_PATH_STATUS_OK) { | |
b99a0cb3 JG |
163 | goto end; |
164 | } | |
165 | ||
cb9222ff JG |
166 | current_action = lttng_trigger_get_action(trigger); |
167 | for (i = 0; i < index_count; i++) { | |
168 | uint64_t path_index; | |
169 | ||
170 | path_status = lttng_action_path_get_index_at_index( | |
171 | action_path, i, &path_index); | |
172 | current_action = lttng_action_list_borrow_mutable_at_index( | |
173 | current_action, path_index); | |
174 | if (!current_action) { | |
175 | /* Invalid action path. */ | |
176 | goto end; | |
177 | } | |
b99a0cb3 JG |
178 | } |
179 | ||
cb9222ff JG |
180 | end: |
181 | return current_action; | |
182 | } | |
183 | ||
184 | static | |
185 | bool is_valid_action_path(const struct lttng_trigger *trigger, | |
186 | const struct lttng_action_path *action_path) | |
187 | { | |
b99a0cb3 | 188 | /* |
cb9222ff JG |
189 | * While 'trigger's constness is casted-away, the trigger and resulting |
190 | * action are not modified; we merely check for the action's existence. | |
b99a0cb3 | 191 | */ |
cb9222ff JG |
192 | return !!get_trigger_action_from_path( |
193 | (struct lttng_trigger *) trigger, action_path); | |
194 | } | |
b99a0cb3 | 195 | |
cb9222ff JG |
196 | struct lttng_error_query *lttng_error_query_action_create( |
197 | const struct lttng_trigger *trigger, | |
198 | const struct lttng_action_path *action_path) | |
199 | { | |
200 | struct lttng_error_query_action *query = NULL; | |
201 | struct lttng_trigger *trigger_copy = NULL; | |
202 | int ret_copy; | |
b99a0cb3 | 203 | |
cb9222ff JG |
204 | if (!trigger || !action_path || |
205 | !is_valid_action_path(trigger, action_path)) { | |
206 | goto end; | |
207 | } | |
b99a0cb3 | 208 | |
cb9222ff JG |
209 | trigger_copy = lttng_trigger_copy(trigger); |
210 | if (!trigger_copy) { | |
211 | goto end; | |
b99a0cb3 JG |
212 | } |
213 | ||
214 | query = zmalloc(sizeof(*query)); | |
215 | if (!query) { | |
216 | PERROR("Failed to allocate action error query"); | |
3746c278 | 217 | goto error; |
b99a0cb3 JG |
218 | } |
219 | ||
cb9222ff JG |
220 | ret_copy = lttng_action_path_copy(action_path, &query->action_path); |
221 | if (ret_copy) { | |
222 | goto error; | |
223 | } | |
224 | ||
b99a0cb3 JG |
225 | query->parent.target_type = LTTNG_ERROR_QUERY_TARGET_TYPE_ACTION; |
226 | query->trigger = trigger_copy; | |
3746c278 | 227 | trigger_copy = NULL; |
cb9222ff JG |
228 | goto end; |
229 | ||
3746c278 JG |
230 | error: |
231 | lttng_trigger_put(trigger_copy); | |
cb9222ff | 232 | lttng_error_query_destroy(query ? &query->parent : NULL); |
b99a0cb3 JG |
233 | end: |
234 | return query ? &query->parent : NULL; | |
235 | } | |
236 | ||
237 | void lttng_error_query_destroy(struct lttng_error_query *query) | |
238 | { | |
239 | struct lttng_error_query_trigger *trigger_query; | |
240 | ||
241 | if (!query) { | |
242 | return; | |
243 | } | |
244 | ||
245 | trigger_query = container_of(query, typeof(*trigger_query), parent); | |
246 | lttng_trigger_put(trigger_query->trigger); | |
247 | free(trigger_query); | |
248 | } | |
249 | ||
250 | static | |
251 | int lttng_error_query_result_counter_serialize( | |
252 | const struct lttng_error_query_result *result, | |
253 | struct lttng_payload *payload) | |
254 | { | |
255 | const struct lttng_error_query_result_counter *counter_result; | |
256 | ||
257 | assert(result->type == LTTNG_ERROR_QUERY_RESULT_TYPE_COUNTER); | |
258 | counter_result = container_of(result, typeof(*counter_result), parent); | |
259 | ||
260 | return lttng_dynamic_buffer_append(&payload->buffer, | |
261 | &(struct lttng_error_query_result_counter_comm) { | |
262 | .value = counter_result->value | |
263 | }, | |
264 | sizeof(struct lttng_error_query_result_counter_comm)); | |
265 | } | |
266 | ||
267 | LTTNG_HIDDEN | |
268 | int lttng_error_query_result_serialize( | |
269 | const struct lttng_error_query_result *result, | |
270 | struct lttng_payload *payload) | |
271 | { | |
272 | int ret; | |
273 | struct lttng_error_query_result_comm header = { | |
274 | .type = (uint8_t) result->type, | |
275 | .name_len = (typeof(header.name_len)) strlen(result->name) + 1, | |
276 | .description_len = (typeof(header.name_len)) strlen(result->description) + 1, | |
277 | }; | |
278 | ||
279 | /* Header. */ | |
280 | ret = lttng_dynamic_buffer_append( | |
281 | &payload->buffer, &header, sizeof(header)); | |
282 | if (ret) { | |
283 | ERR("Failed to append error query result communication header to payload"); | |
284 | goto end; | |
285 | } | |
286 | ||
287 | /* Name. */ | |
288 | ret = lttng_dynamic_buffer_append( | |
289 | &payload->buffer, result->name, header.name_len); | |
290 | if (ret) { | |
291 | ERR("Failed to append error query result name to payload"); | |
292 | goto end; | |
293 | } | |
294 | ||
295 | /* Description. */ | |
296 | ret = lttng_dynamic_buffer_append(&payload->buffer, result->description, | |
297 | header.description_len); | |
298 | if (ret) { | |
299 | ERR("Failed to append error query result description to payload"); | |
300 | goto end; | |
301 | } | |
302 | ||
303 | /* Type-specific payload. */ | |
304 | switch (result->type) { | |
305 | case LTTNG_ERROR_QUERY_RESULT_TYPE_COUNTER: | |
306 | ret = lttng_error_query_result_counter_serialize( | |
307 | result, payload); | |
308 | if (ret) { | |
309 | ERR("Failed to serialize counter error query result"); | |
310 | goto end; | |
311 | } | |
312 | break; | |
313 | default: | |
314 | abort(); | |
315 | } | |
316 | ||
317 | end: | |
318 | return ret; | |
319 | } | |
320 | ||
321 | static | |
322 | int lttng_error_query_result_init( | |
323 | struct lttng_error_query_result *result, | |
324 | enum lttng_error_query_result_type result_type, | |
325 | const char *name, | |
326 | const char *description) | |
327 | { | |
328 | int ret; | |
329 | ||
330 | assert(name); | |
331 | assert(description); | |
332 | ||
333 | result->type = result_type; | |
334 | ||
335 | result->name = strdup(name); | |
336 | if (!result->name) { | |
337 | PERROR("Failed to copy error query result name"); | |
338 | ret = -1; | |
339 | goto end; | |
340 | } | |
341 | ||
342 | result->description = strdup(description); | |
343 | if (!result->description) { | |
344 | PERROR("Failed to copy error query result description"); | |
345 | ret = -1; | |
346 | goto end; | |
347 | } | |
348 | ||
349 | ret = 0; | |
350 | end: | |
351 | return ret; | |
352 | } | |
353 | ||
354 | LTTNG_HIDDEN | |
355 | void lttng_error_query_result_destroy(struct lttng_error_query_result *counter) | |
356 | { | |
357 | if (!counter) { | |
358 | return; | |
359 | } | |
360 | ||
361 | switch (counter->type) { | |
362 | case LTTNG_ERROR_QUERY_RESULT_TYPE_COUNTER: | |
363 | /* Nothing to tear down. */ | |
364 | break; | |
365 | default: | |
366 | abort(); | |
367 | } | |
368 | ||
369 | free(counter->name); | |
370 | free(counter->description); | |
371 | free(counter); | |
372 | } | |
373 | ||
374 | LTTNG_HIDDEN | |
375 | struct lttng_error_query_result * | |
376 | lttng_error_query_result_counter_create( | |
377 | const char *name, const char *description, uint64_t value) | |
378 | { | |
379 | int init_ret; | |
380 | struct lttng_error_query_result_counter *counter; | |
381 | ||
382 | counter = zmalloc(sizeof(*counter)); | |
383 | if (!counter) { | |
384 | PERROR("Failed to allocate error query counter result"); | |
385 | goto end; | |
386 | } | |
387 | ||
388 | init_ret = lttng_error_query_result_init(&counter->parent, | |
389 | LTTNG_ERROR_QUERY_RESULT_TYPE_COUNTER, name, | |
390 | description); | |
391 | if (init_ret) { | |
392 | goto error; | |
393 | } | |
394 | ||
588c4b0d | 395 | counter->value = value; |
b99a0cb3 JG |
396 | goto end; |
397 | error: | |
398 | lttng_error_query_result_destroy(&counter->parent); | |
399 | end: | |
400 | return counter ? &counter->parent : NULL; | |
401 | } | |
402 | ||
403 | static | |
404 | void destroy_result(void *ptr) | |
405 | { | |
406 | struct lttng_error_query_result *result = (typeof(result)) ptr; | |
407 | ||
408 | lttng_error_query_result_destroy(result); | |
409 | } | |
410 | ||
411 | LTTNG_HIDDEN | |
412 | struct lttng_error_query_results *lttng_error_query_results_create(void) | |
413 | { | |
414 | struct lttng_error_query_results *set = zmalloc(sizeof(*set)); | |
415 | ||
416 | if (!set) { | |
417 | PERROR("Failed to allocate an error query result set"); | |
418 | goto end; | |
419 | } | |
420 | ||
421 | lttng_dynamic_pointer_array_init(&set->results, destroy_result); | |
422 | end: | |
423 | return set; | |
424 | } | |
425 | ||
426 | LTTNG_HIDDEN | |
427 | int lttng_error_query_results_add_result( | |
428 | struct lttng_error_query_results *results, | |
429 | struct lttng_error_query_result *result) | |
430 | { | |
431 | return lttng_dynamic_pointer_array_add_pointer( | |
432 | &results->results, result); | |
433 | } | |
434 | ||
435 | LTTNG_HIDDEN | |
436 | ssize_t lttng_error_query_result_create_from_payload( | |
437 | struct lttng_payload_view *view, | |
438 | struct lttng_error_query_result **result) | |
439 | { | |
440 | ssize_t used_size = 0; | |
441 | struct lttng_error_query_result_comm *header; | |
442 | struct lttng_payload_view header_view = | |
443 | lttng_payload_view_from_view(view, 0, sizeof(*header)); | |
444 | const char *name; | |
445 | const char *description; | |
446 | ||
447 | if (!lttng_payload_view_is_valid(&header_view)) { | |
448 | used_size = -1; | |
449 | goto end; | |
450 | } | |
451 | ||
452 | header = (typeof(header)) header_view.buffer.data; | |
453 | used_size += sizeof(*header); | |
454 | ||
455 | { | |
456 | struct lttng_payload_view name_view = | |
457 | lttng_payload_view_from_view(view, used_size, | |
458 | header->name_len); | |
459 | ||
460 | if (!lttng_payload_view_is_valid(&name_view) || | |
461 | !lttng_buffer_view_contains_string( | |
462 | &name_view.buffer, | |
463 | name_view.buffer.data, | |
464 | header->name_len)) { | |
465 | used_size = -1; | |
466 | goto end; | |
467 | } | |
468 | ||
469 | name = name_view.buffer.data; | |
470 | used_size += header->name_len; | |
471 | } | |
472 | ||
473 | { | |
474 | struct lttng_payload_view description_view = | |
475 | lttng_payload_view_from_view(view, used_size, | |
476 | header->description_len); | |
477 | ||
478 | if (!lttng_payload_view_is_valid(&description_view) || | |
479 | !lttng_buffer_view_contains_string( | |
480 | &description_view.buffer, | |
481 | description_view.buffer.data, | |
482 | header->description_len)) { | |
483 | used_size = -1; | |
484 | goto end; | |
485 | } | |
486 | ||
487 | description = description_view.buffer.data; | |
488 | used_size += header->description_len; | |
489 | } | |
490 | ||
491 | switch (header->type) { | |
492 | case LTTNG_ERROR_QUERY_RESULT_TYPE_COUNTER: | |
493 | { | |
494 | struct lttng_error_query_result_counter_comm *counter; | |
495 | struct lttng_payload_view counter_payload_view = | |
496 | lttng_payload_view_from_view(view, used_size, | |
497 | sizeof(*counter)); | |
498 | ||
499 | if (!lttng_payload_view_is_valid(&counter_payload_view)) { | |
500 | used_size = -1; | |
501 | goto end; | |
502 | } | |
503 | ||
504 | counter = (typeof(counter)) counter_payload_view.buffer.data; | |
505 | *result = lttng_error_query_result_counter_create( | |
506 | name, description, counter->value); | |
507 | if (!*result) { | |
508 | used_size = -1; | |
509 | goto end; | |
510 | } | |
511 | ||
512 | used_size += sizeof(*counter); | |
513 | break; | |
514 | } | |
515 | default: | |
516 | used_size = -1; | |
517 | goto end; | |
518 | } | |
519 | ||
520 | end: | |
521 | return used_size; | |
522 | } | |
523 | ||
524 | LTTNG_HIDDEN | |
525 | int lttng_error_query_results_serialize( | |
526 | const struct lttng_error_query_results *results, | |
527 | struct lttng_payload *payload) | |
528 | { | |
529 | int ret; | |
530 | size_t result_index; | |
531 | const size_t result_count = lttng_dynamic_pointer_array_get_count( | |
532 | &results->results); | |
533 | const struct lttng_error_query_results_comm header = { | |
534 | .count = (typeof(header.count)) result_count, | |
535 | }; | |
536 | ||
537 | /* Header. */ | |
538 | ret = lttng_dynamic_buffer_append(&payload->buffer, &header, sizeof(header)); | |
539 | if (ret) { | |
540 | ERR("Failed to append error query result set header to payload"); | |
541 | goto end; | |
542 | } | |
543 | ||
544 | /* Results. */ | |
545 | for (result_index = 0; result_index < result_count; result_index++) { | |
546 | const struct lttng_error_query_result *result = (typeof(result)) | |
547 | lttng_dynamic_pointer_array_get_pointer( | |
548 | &results->results, | |
549 | result_index); | |
550 | ||
551 | ret = lttng_error_query_result_serialize(result, payload); | |
552 | if (ret) { | |
553 | ERR("Failed to append error query result to payload"); | |
554 | goto end; | |
555 | } | |
556 | } | |
557 | end: | |
558 | return ret; | |
559 | } | |
560 | ||
561 | LTTNG_HIDDEN | |
562 | ssize_t lttng_error_query_results_create_from_payload( | |
563 | struct lttng_payload_view *view, | |
564 | struct lttng_error_query_results **_results) | |
565 | { | |
566 | size_t result_index; | |
567 | ssize_t total_used_size = 0; | |
568 | struct lttng_error_query_results_comm *header; | |
569 | struct lttng_payload_view header_view = | |
570 | lttng_payload_view_from_view(view, 0, sizeof(*header)); | |
571 | struct lttng_error_query_results *results = NULL; | |
572 | ||
573 | if (!lttng_payload_view_is_valid(&header_view)) { | |
574 | ERR("Failed to map view to error query result set header"); | |
575 | total_used_size = -1; | |
576 | goto end; | |
577 | } | |
578 | ||
579 | header = (typeof(header)) header_view.buffer.data; | |
580 | total_used_size += sizeof(*header); | |
581 | results = lttng_error_query_results_create(); | |
582 | if (!results) { | |
583 | total_used_size = -1; | |
584 | goto end; | |
585 | } | |
586 | ||
587 | for (result_index = 0; result_index < header->count; result_index++) { | |
588 | ssize_t used_size; | |
589 | struct lttng_error_query_result *result; | |
590 | struct lttng_payload_view result_view = | |
591 | lttng_payload_view_from_view( | |
592 | view, total_used_size, -1); | |
593 | ||
594 | if (!lttng_payload_view_is_valid(&result_view)) { | |
595 | total_used_size = -1; | |
596 | goto end; | |
597 | } | |
598 | ||
599 | used_size = lttng_error_query_result_create_from_payload( | |
600 | &result_view, &result); | |
601 | if (used_size < 0) { | |
602 | total_used_size = -1; | |
603 | goto end; | |
604 | } | |
605 | ||
606 | total_used_size += used_size; | |
607 | ||
608 | if (lttng_dynamic_pointer_array_add_pointer( | |
609 | &results->results, result)) { | |
610 | lttng_error_query_result_destroy(result); | |
611 | total_used_size = -1; | |
612 | goto end; | |
613 | } | |
614 | } | |
615 | ||
616 | *_results = results; | |
617 | results = NULL; | |
618 | end: | |
619 | lttng_error_query_results_destroy(results); | |
620 | return total_used_size; | |
621 | } | |
622 | ||
623 | static | |
624 | int lttng_error_query_trigger_serialize(const struct lttng_error_query *query, | |
625 | struct lttng_payload *payload) | |
626 | { | |
627 | int ret; | |
628 | const struct lttng_error_query_trigger *query_trigger = | |
629 | container_of(query, typeof(*query_trigger), parent); | |
630 | ||
631 | if (!lttng_trigger_validate(query_trigger->trigger)) { | |
632 | ret = -1; | |
633 | goto end; | |
634 | } | |
635 | ||
636 | ret = lttng_trigger_serialize(query_trigger->trigger, payload); | |
637 | if (ret) { | |
638 | goto end; | |
639 | } | |
640 | ||
641 | end: | |
642 | return ret; | |
643 | } | |
644 | ||
63dd3d7b JG |
645 | static |
646 | int lttng_error_query_condition_serialize(const struct lttng_error_query *query, | |
647 | struct lttng_payload *payload) | |
648 | { | |
649 | int ret; | |
650 | const struct lttng_error_query_condition *query_trigger = | |
651 | container_of(query, typeof(*query_trigger), parent); | |
652 | ||
653 | if (!lttng_trigger_validate(query_trigger->trigger)) { | |
654 | ret = -1; | |
655 | goto end; | |
656 | } | |
657 | ||
658 | ret = lttng_trigger_serialize(query_trigger->trigger, payload); | |
659 | if (ret) { | |
660 | goto end; | |
661 | } | |
662 | ||
663 | end: | |
664 | return ret; | |
665 | } | |
666 | ||
b99a0cb3 JG |
667 | static |
668 | int lttng_error_query_action_serialize(const struct lttng_error_query *query, | |
669 | struct lttng_payload *payload) | |
670 | { | |
671 | int ret; | |
672 | const struct lttng_error_query_action *query_action = | |
673 | container_of(query, typeof(*query_action), parent); | |
b99a0cb3 JG |
674 | |
675 | if (!lttng_trigger_validate(query_action->trigger)) { | |
676 | ret = -1; | |
677 | goto end; | |
678 | } | |
679 | ||
cb9222ff | 680 | ret = lttng_trigger_serialize(query_action->trigger, payload); |
b99a0cb3 JG |
681 | if (ret) { |
682 | goto end; | |
683 | } | |
684 | ||
cb9222ff | 685 | ret = lttng_action_path_serialize(&query_action->action_path, payload); |
b99a0cb3 JG |
686 | if (ret) { |
687 | goto end; | |
688 | } | |
cb9222ff | 689 | |
b99a0cb3 JG |
690 | end: |
691 | return ret; | |
692 | } | |
693 | ||
694 | LTTNG_HIDDEN | |
695 | enum lttng_error_query_target_type lttng_error_query_get_target_type( | |
696 | const struct lttng_error_query *query) | |
697 | { | |
698 | return query->target_type; | |
699 | } | |
700 | ||
701 | LTTNG_HIDDEN | |
702 | const struct lttng_trigger *lttng_error_query_trigger_borrow_target( | |
703 | const struct lttng_error_query *query) | |
704 | { | |
705 | const struct lttng_error_query_trigger *query_trigger = | |
706 | container_of(query, typeof(*query_trigger), parent); | |
707 | ||
708 | return query_trigger->trigger; | |
709 | } | |
710 | ||
63dd3d7b JG |
711 | LTTNG_HIDDEN |
712 | const struct lttng_trigger *lttng_error_query_condition_borrow_target( | |
713 | const struct lttng_error_query *query) | |
714 | { | |
715 | const struct lttng_error_query_condition *query_trigger = | |
716 | container_of(query, typeof(*query_trigger), parent); | |
717 | ||
718 | return query_trigger->trigger; | |
719 | } | |
720 | ||
b99a0cb3 JG |
721 | LTTNG_HIDDEN |
722 | const struct lttng_trigger *lttng_error_query_action_borrow_trigger_target( | |
723 | const struct lttng_error_query *query) | |
724 | { | |
725 | const struct lttng_error_query_action *query_action = | |
726 | container_of(query, typeof(*query_action), parent); | |
727 | ||
728 | return query_action->trigger; | |
729 | } | |
730 | ||
731 | LTTNG_HIDDEN | |
588c4b0d | 732 | struct lttng_action *lttng_error_query_action_borrow_action_target( |
b99a0cb3 | 733 | const struct lttng_error_query *query, |
588c4b0d | 734 | struct lttng_trigger *trigger) |
b99a0cb3 | 735 | { |
b99a0cb3 JG |
736 | const struct lttng_error_query_action *query_action = |
737 | container_of(query, typeof(*query_action), parent); | |
b99a0cb3 | 738 | |
cb9222ff JG |
739 | return get_trigger_action_from_path( |
740 | trigger, &query_action->action_path); | |
b99a0cb3 JG |
741 | } |
742 | ||
743 | LTTNG_HIDDEN | |
744 | int lttng_error_query_serialize(const struct lttng_error_query *query, | |
745 | struct lttng_payload *payload) | |
746 | { | |
747 | int ret; | |
748 | struct lttng_error_query_comm header = { | |
749 | .target_type = (typeof(header.target_type)) query->target_type, | |
750 | }; | |
751 | ||
752 | ret = lttng_dynamic_buffer_append( | |
753 | &payload->buffer, &header, sizeof(header)); | |
754 | if (ret) { | |
755 | ERR("Failed to append error query header to payload"); | |
756 | goto end; | |
757 | } | |
758 | ||
759 | switch (query->target_type) { | |
760 | case LTTNG_ERROR_QUERY_TARGET_TYPE_TRIGGER: | |
761 | ret = lttng_error_query_trigger_serialize(query, payload); | |
762 | if (ret) { | |
763 | goto end; | |
764 | } | |
765 | ||
63dd3d7b JG |
766 | break; |
767 | case LTTNG_ERROR_QUERY_TARGET_TYPE_CONDITION: | |
768 | ret = lttng_error_query_condition_serialize(query, payload); | |
769 | if (ret) { | |
770 | goto end; | |
771 | } | |
772 | ||
b99a0cb3 JG |
773 | break; |
774 | case LTTNG_ERROR_QUERY_TARGET_TYPE_ACTION: | |
775 | ret = lttng_error_query_action_serialize(query, payload); | |
776 | if (ret) { | |
777 | goto end; | |
778 | } | |
779 | ||
780 | break; | |
781 | default: | |
782 | abort(); | |
783 | } | |
784 | end: | |
785 | return ret; | |
786 | } | |
787 | ||
788 | LTTNG_HIDDEN | |
789 | ssize_t lttng_error_query_create_from_payload(struct lttng_payload_view *view, | |
790 | struct lttng_error_query **query) | |
791 | { | |
792 | ssize_t used_size = 0; | |
793 | struct lttng_error_query_comm *header; | |
9de6375f | 794 | struct lttng_trigger *trigger = NULL; |
b99a0cb3 JG |
795 | struct lttng_payload_view header_view = |
796 | lttng_payload_view_from_view(view, 0, sizeof(*header)); | |
797 | ||
798 | if (!lttng_payload_view_is_valid(&header_view)) { | |
799 | ERR("Failed to map error query header"); | |
800 | used_size = -1; | |
801 | goto end; | |
802 | } | |
803 | ||
804 | used_size = sizeof(*header); | |
805 | ||
806 | header = (typeof(header)) header_view.buffer.data; | |
807 | switch ((enum lttng_error_query_target_type) header->target_type) { | |
808 | case LTTNG_ERROR_QUERY_TARGET_TYPE_TRIGGER: | |
809 | { | |
b99a0cb3 JG |
810 | ssize_t trigger_used_size; |
811 | struct lttng_payload_view trigger_view = | |
812 | lttng_payload_view_from_view( | |
813 | view, used_size, -1); | |
814 | ||
815 | if (!lttng_payload_view_is_valid(&trigger_view)) { | |
816 | used_size = -1; | |
817 | goto end; | |
818 | } | |
819 | ||
820 | trigger_used_size = lttng_trigger_create_from_payload( | |
821 | &trigger_view, &trigger); | |
822 | if (trigger_used_size < 0) { | |
823 | used_size = -1; | |
824 | goto end; | |
825 | } | |
826 | ||
827 | used_size += trigger_used_size; | |
828 | ||
829 | *query = lttng_error_query_trigger_create(trigger); | |
b99a0cb3 JG |
830 | if (!*query) { |
831 | used_size = -1; | |
832 | goto end; | |
833 | } | |
834 | ||
835 | break; | |
836 | } | |
63dd3d7b JG |
837 | case LTTNG_ERROR_QUERY_TARGET_TYPE_CONDITION: |
838 | { | |
839 | ssize_t trigger_used_size; | |
840 | struct lttng_payload_view trigger_view = | |
841 | lttng_payload_view_from_view( | |
842 | view, used_size, -1); | |
843 | ||
844 | if (!lttng_payload_view_is_valid(&trigger_view)) { | |
845 | used_size = -1; | |
846 | goto end; | |
847 | } | |
848 | ||
849 | trigger_used_size = lttng_trigger_create_from_payload( | |
850 | &trigger_view, &trigger); | |
851 | if (trigger_used_size < 0) { | |
852 | used_size = -1; | |
853 | goto end; | |
854 | } | |
855 | ||
856 | used_size += trigger_used_size; | |
857 | ||
858 | *query = lttng_error_query_condition_create(trigger); | |
859 | if (!*query) { | |
860 | used_size = -1; | |
861 | goto end; | |
862 | } | |
863 | ||
864 | break; | |
865 | } | |
b99a0cb3 JG |
866 | case LTTNG_ERROR_QUERY_TARGET_TYPE_ACTION: |
867 | { | |
cb9222ff | 868 | struct lttng_action_path *action_path = NULL; |
b99a0cb3 JG |
869 | |
870 | { | |
cb9222ff | 871 | ssize_t trigger_used_size; |
b99a0cb3 JG |
872 | struct lttng_payload_view trigger_view = |
873 | lttng_payload_view_from_view( | |
874 | view, used_size, -1); | |
875 | ||
876 | if (!lttng_payload_view_is_valid(&trigger_view)) { | |
877 | used_size = -1; | |
878 | goto end; | |
879 | } | |
880 | ||
881 | trigger_used_size = lttng_trigger_create_from_payload( | |
882 | &trigger_view, &trigger); | |
883 | if (trigger_used_size < 0) { | |
884 | used_size = -1; | |
885 | goto end; | |
886 | } | |
887 | ||
888 | used_size += trigger_used_size; | |
889 | } | |
890 | ||
cb9222ff JG |
891 | { |
892 | ssize_t action_path_used_size; | |
893 | struct lttng_payload_view action_path_view = | |
894 | lttng_payload_view_from_view( | |
895 | view, used_size, -1); | |
896 | ||
897 | if (!lttng_payload_view_is_valid(&action_path_view)) { | |
898 | used_size = -1; | |
899 | goto end; | |
900 | } | |
901 | ||
902 | action_path_used_size = lttng_action_path_create_from_payload( | |
903 | &action_path_view, &action_path); | |
904 | if (action_path_used_size < 0) { | |
b99a0cb3 JG |
905 | used_size = -1; |
906 | goto end; | |
907 | } | |
908 | ||
cb9222ff | 909 | used_size += action_path_used_size; |
b99a0cb3 JG |
910 | } |
911 | ||
912 | *query = lttng_error_query_action_create( | |
cb9222ff JG |
913 | trigger, action_path); |
914 | lttng_action_path_destroy(action_path); | |
b99a0cb3 JG |
915 | if (!*query) { |
916 | used_size = -1; | |
917 | goto end; | |
918 | } | |
919 | ||
920 | break; | |
921 | } | |
922 | default: | |
923 | used_size = -1; | |
924 | goto end; | |
925 | } | |
926 | ||
927 | end: | |
9de6375f | 928 | lttng_trigger_put(trigger); |
b99a0cb3 JG |
929 | return used_size; |
930 | } | |
931 | ||
932 | enum lttng_error_query_results_status lttng_error_query_results_get_count( | |
933 | const struct lttng_error_query_results *results, | |
934 | unsigned int *count) | |
935 | { | |
936 | enum lttng_error_query_results_status status; | |
937 | ||
938 | if (!results || !count) { | |
939 | status = LTTNG_ERROR_QUERY_RESULTS_STATUS_INVALID_PARAMETER; | |
940 | goto end; | |
941 | } | |
942 | ||
943 | *count = lttng_dynamic_pointer_array_get_count(&results->results); | |
944 | status = LTTNG_ERROR_QUERY_RESULTS_STATUS_OK; | |
945 | end: | |
946 | return status; | |
947 | } | |
948 | ||
949 | enum lttng_error_query_results_status | |
950 | lttng_error_query_results_get_result( | |
951 | const struct lttng_error_query_results *results, | |
952 | const struct lttng_error_query_result **result, | |
953 | unsigned int index) | |
954 | { | |
955 | unsigned int result_count; | |
956 | enum lttng_error_query_results_status status; | |
957 | ||
958 | if (!results || !result) { | |
959 | status = LTTNG_ERROR_QUERY_RESULTS_STATUS_INVALID_PARAMETER; | |
960 | goto end; | |
961 | } | |
962 | ||
963 | status = lttng_error_query_results_get_count(results, &result_count); | |
964 | if (status != LTTNG_ERROR_QUERY_RESULTS_STATUS_OK) { | |
965 | goto end; | |
966 | } | |
967 | ||
968 | if (index >= result_count) { | |
969 | status = LTTNG_ERROR_QUERY_RESULTS_STATUS_INVALID_PARAMETER; | |
970 | goto end; | |
971 | } | |
972 | ||
973 | *result = (typeof(*result)) lttng_dynamic_pointer_array_get_pointer( | |
974 | &results->results, index); | |
975 | assert(*result); | |
976 | status = LTTNG_ERROR_QUERY_RESULTS_STATUS_OK; | |
977 | end: | |
978 | return status; | |
979 | } | |
980 | ||
981 | void lttng_error_query_results_destroy( | |
982 | struct lttng_error_query_results *results) | |
983 | { | |
984 | if (!results) { | |
985 | return; | |
986 | } | |
987 | ||
988 | lttng_dynamic_pointer_array_reset(&results->results); | |
989 | free(results); | |
990 | } | |
991 | ||
992 | enum lttng_error_query_result_type | |
993 | lttng_error_query_result_get_type(const struct lttng_error_query_result *result) | |
994 | { | |
995 | return result ? result->type : LTTNG_ERROR_QUERY_RESULT_TYPE_UNKNOWN; | |
996 | } | |
997 | ||
998 | enum lttng_error_query_result_status lttng_error_query_result_get_name( | |
999 | const struct lttng_error_query_result *result, | |
1000 | const char **name) | |
1001 | { | |
1002 | enum lttng_error_query_result_status status; | |
1003 | ||
1004 | if (!result || !name) { | |
1005 | status = LTTNG_ERROR_QUERY_RESULT_STATUS_INVALID_PARAMETER; | |
1006 | goto end; | |
1007 | } | |
1008 | ||
1009 | *name = result->name; | |
1010 | status = LTTNG_ERROR_QUERY_RESULT_STATUS_OK; | |
1011 | end: | |
1012 | return status; | |
1013 | } | |
1014 | ||
1015 | enum lttng_error_query_result_status lttng_error_query_result_get_description( | |
1016 | const struct lttng_error_query_result *result, | |
1017 | const char **description) | |
1018 | { | |
1019 | enum lttng_error_query_result_status status; | |
1020 | ||
1021 | if (!result || !description) { | |
1022 | status = LTTNG_ERROR_QUERY_RESULT_STATUS_INVALID_PARAMETER; | |
1023 | goto end; | |
1024 | } | |
1025 | ||
1026 | *description = result->description; | |
1027 | status = LTTNG_ERROR_QUERY_RESULT_STATUS_OK; | |
1028 | end: | |
1029 | return status; | |
1030 | } | |
1031 | ||
1032 | enum lttng_error_query_result_status lttng_error_query_result_counter_get_value( | |
1033 | const struct lttng_error_query_result *result, | |
1034 | uint64_t *value) | |
1035 | { | |
1036 | enum lttng_error_query_result_status status; | |
1037 | const struct lttng_error_query_result_counter *counter_result; | |
1038 | ||
1039 | if (!result || !value || | |
1040 | result->type != LTTNG_ERROR_QUERY_RESULT_TYPE_COUNTER) { | |
1041 | status = LTTNG_ERROR_QUERY_RESULT_STATUS_INVALID_PARAMETER; | |
1042 | goto end; | |
1043 | } | |
1044 | ||
1045 | counter_result = container_of(result, typeof(*counter_result), parent); | |
1046 | ||
1047 | *value = counter_result->value; | |
1048 | status = LTTNG_ERROR_QUERY_RESULT_STATUS_OK; | |
1049 | end: | |
1050 | return status; | |
1051 | } |