Commit | Line | Data |
---|---|---|
6d420eff JR |
1 | /* |
2 | * Copyright (C) 2019 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com> | |
3 | * | |
4 | * SPDX-License-Identifier: LGPL-2.1-only | |
5 | * | |
6 | */ | |
7 | ||
8 | #include <assert.h> | |
58daac01 | 9 | #include <common/credentials.h> |
6d420eff JR |
10 | #include <common/error.h> |
11 | #include <common/macros.h> | |
85b05318 | 12 | #include <common/optional.h> |
6d420eff JR |
13 | #include <common/payload.h> |
14 | #include <common/payload-view.h> | |
15 | #include <common/runas.h> | |
959e3c66 JR |
16 | #include <common/hashtable/hashtable.h> |
17 | #include <common/hashtable/utils.h> | |
6d420eff JR |
18 | #include <lttng/event-rule/event-rule-internal.h> |
19 | #include <lttng/event-rule/tracepoint-internal.h> | |
85b05318 | 20 | #include <lttng/log-level-rule.h> |
44760c20 | 21 | #include <lttng/event.h> |
6d420eff JR |
22 | |
23 | #define IS_TRACEPOINT_EVENT_RULE(rule) \ | |
24 | (lttng_event_rule_get_type(rule) == LTTNG_EVENT_RULE_TYPE_TRACEPOINT) | |
25 | ||
26 | static void lttng_event_rule_tracepoint_destroy(struct lttng_event_rule *rule) | |
27 | { | |
28 | struct lttng_event_rule_tracepoint *tracepoint; | |
29 | ||
30 | if (rule == NULL) { | |
31 | return; | |
32 | } | |
33 | ||
34 | tracepoint = container_of( | |
35 | rule, struct lttng_event_rule_tracepoint, parent); | |
36 | ||
37 | lttng_dynamic_pointer_array_reset(&tracepoint->exclusions); | |
38 | free(tracepoint->pattern); | |
39 | free(tracepoint->filter_expression); | |
40 | free(tracepoint->internal_filter.filter); | |
41 | free(tracepoint->internal_filter.bytecode); | |
42 | free(tracepoint); | |
43 | } | |
44 | ||
45 | static bool lttng_event_rule_tracepoint_validate( | |
46 | const struct lttng_event_rule *rule) | |
47 | { | |
48 | bool valid = false; | |
49 | struct lttng_event_rule_tracepoint *tracepoint; | |
50 | ||
51 | if (!rule) { | |
52 | goto end; | |
53 | } | |
54 | ||
55 | tracepoint = container_of( | |
56 | rule, struct lttng_event_rule_tracepoint, parent); | |
57 | ||
58 | /* Required field. */ | |
59 | if (!tracepoint->pattern) { | |
60 | ERR("Invalid tracepoint event rule: a pattern must be set."); | |
61 | goto end; | |
62 | } | |
63 | ||
64 | /* Required field. */ | |
65 | if (tracepoint->domain == LTTNG_DOMAIN_NONE) { | |
66 | ERR("Invalid tracepoint event rule: a domain must be set."); | |
67 | goto end; | |
68 | } | |
69 | ||
70 | valid = true; | |
71 | end: | |
72 | return valid; | |
73 | } | |
74 | ||
75 | static int lttng_event_rule_tracepoint_serialize( | |
76 | const struct lttng_event_rule *rule, | |
77 | struct lttng_payload *payload) | |
78 | { | |
79 | int ret, i; | |
85b05318 JR |
80 | size_t pattern_len, filter_expression_len, exclusions_len, header_offset; |
81 | size_t size_before_log_level_rule; | |
6d420eff JR |
82 | struct lttng_event_rule_tracepoint *tracepoint; |
83 | struct lttng_event_rule_tracepoint_comm tracepoint_comm; | |
84 | enum lttng_event_rule_status status; | |
85 | unsigned int exclusion_count; | |
86 | size_t exclusions_appended_len = 0; | |
85b05318 | 87 | struct lttng_event_rule_tracepoint_comm *header; |
6d420eff JR |
88 | |
89 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule)) { | |
90 | ret = -1; | |
91 | goto end; | |
92 | } | |
93 | ||
85b05318 JR |
94 | header_offset = payload->buffer.size; |
95 | ||
6d420eff JR |
96 | DBG("Serializing tracepoint event rule."); |
97 | tracepoint = container_of( | |
98 | rule, struct lttng_event_rule_tracepoint, parent); | |
99 | ||
100 | status = lttng_event_rule_tracepoint_get_exclusions_count(rule, &exclusion_count); | |
101 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
102 | ||
103 | pattern_len = strlen(tracepoint->pattern) + 1; | |
104 | ||
105 | if (tracepoint->filter_expression != NULL) { | |
106 | filter_expression_len = | |
107 | strlen(tracepoint->filter_expression) + 1; | |
108 | } else { | |
109 | filter_expression_len = 0; | |
110 | } | |
111 | ||
112 | exclusions_len = 0; | |
113 | for (i = 0; i < exclusion_count; i++) { | |
114 | const char *exclusion; | |
115 | ||
116 | status = lttng_event_rule_tracepoint_get_exclusion_at_index( | |
117 | rule, i, &exclusion); | |
118 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
119 | ||
120 | /* Length field. */ | |
121 | exclusions_len += sizeof(uint32_t); | |
122 | /* Payload (null terminated). */ | |
123 | exclusions_len += strlen(exclusion) + 1; | |
124 | } | |
125 | ||
126 | tracepoint_comm.domain_type = (int8_t) tracepoint->domain; | |
6d420eff JR |
127 | tracepoint_comm.pattern_len = pattern_len; |
128 | tracepoint_comm.filter_expression_len = filter_expression_len; | |
129 | tracepoint_comm.exclusions_count = exclusion_count; | |
130 | tracepoint_comm.exclusions_len = exclusions_len; | |
131 | ||
132 | ret = lttng_dynamic_buffer_append(&payload->buffer, &tracepoint_comm, | |
133 | sizeof(tracepoint_comm)); | |
134 | if (ret) { | |
135 | goto end; | |
136 | } | |
137 | ||
138 | ret = lttng_dynamic_buffer_append( | |
139 | &payload->buffer, tracepoint->pattern, pattern_len); | |
140 | if (ret) { | |
141 | goto end; | |
142 | } | |
143 | ||
144 | ret = lttng_dynamic_buffer_append(&payload->buffer, tracepoint->filter_expression, | |
145 | filter_expression_len); | |
146 | if (ret) { | |
147 | goto end; | |
148 | } | |
149 | ||
85b05318 JR |
150 | size_before_log_level_rule = payload->buffer.size; |
151 | ||
152 | ret = lttng_log_level_rule_serialize(tracepoint->log_level_rule, payload); | |
153 | if (ret < 0) { | |
154 | goto end; | |
155 | } | |
156 | ||
157 | header = (typeof(header)) ((char *) payload->buffer.data + header_offset); | |
158 | header->log_level_rule_len = | |
159 | payload->buffer.size - size_before_log_level_rule; | |
160 | ||
6d420eff JR |
161 | for (i = 0; i < exclusion_count; i++) { |
162 | size_t len; | |
163 | const char *exclusion; | |
164 | ||
165 | status = lttng_event_rule_tracepoint_get_exclusion_at_index( | |
166 | rule, i, &exclusion); | |
167 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
168 | ||
169 | len = strlen(exclusion) + 1; | |
170 | /* Append exclusion length, includes the null terminator. */ | |
171 | ret = lttng_dynamic_buffer_append( | |
172 | &payload->buffer, &len, sizeof(uint32_t)); | |
173 | if (ret) { | |
174 | goto end; | |
175 | } | |
176 | ||
177 | exclusions_appended_len += sizeof(uint32_t); | |
178 | ||
179 | /* Include the '\0' in the payload. */ | |
180 | ret = lttng_dynamic_buffer_append( | |
181 | &payload->buffer, exclusion, len); | |
182 | if (ret) { | |
183 | goto end; | |
184 | } | |
185 | ||
186 | exclusions_appended_len += len; | |
187 | } | |
188 | ||
189 | assert(exclusions_len == exclusions_appended_len); | |
190 | ||
191 | end: | |
192 | return ret; | |
193 | } | |
194 | ||
195 | static bool lttng_event_rule_tracepoint_is_equal( | |
196 | const struct lttng_event_rule *_a, | |
197 | const struct lttng_event_rule *_b) | |
198 | { | |
199 | int i; | |
200 | bool is_equal = false; | |
201 | struct lttng_event_rule_tracepoint *a, *b; | |
202 | unsigned int count_a, count_b; | |
203 | enum lttng_event_rule_status status; | |
204 | ||
205 | a = container_of(_a, struct lttng_event_rule_tracepoint, parent); | |
206 | b = container_of(_b, struct lttng_event_rule_tracepoint, parent); | |
207 | ||
208 | status = lttng_event_rule_tracepoint_get_exclusions_count(_a, &count_a); | |
209 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
210 | status = lttng_event_rule_tracepoint_get_exclusions_count(_b, &count_b); | |
211 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
212 | ||
213 | /* Quick checks. */ | |
214 | if (a->domain != b->domain) { | |
215 | goto end; | |
216 | } | |
217 | ||
218 | if (count_a != count_b) { | |
219 | goto end; | |
220 | } | |
221 | ||
222 | if (!!a->filter_expression != !!b->filter_expression) { | |
223 | goto end; | |
224 | } | |
225 | ||
226 | /* Long check. */ | |
227 | assert(a->pattern); | |
228 | assert(b->pattern); | |
229 | if (strcmp(a->pattern, b->pattern)) { | |
230 | goto end; | |
231 | } | |
232 | ||
233 | if (a->filter_expression && b->filter_expression) { | |
234 | if (strcmp(a->filter_expression, b->filter_expression)) { | |
235 | goto end; | |
236 | } | |
237 | } else if (!!a->filter_expression != !!b->filter_expression) { | |
238 | /* One is set; not the other. */ | |
239 | goto end; | |
240 | } | |
241 | ||
85b05318 JR |
242 | if (!lttng_log_level_rule_is_equal( |
243 | a->log_level_rule, b->log_level_rule)) { | |
6d420eff JR |
244 | goto end; |
245 | } | |
246 | ||
247 | for (i = 0; i < count_a; i++) { | |
248 | const char *exclusion_a, *exclusion_b; | |
249 | ||
250 | status = lttng_event_rule_tracepoint_get_exclusion_at_index( | |
251 | _a, i, &exclusion_a); | |
252 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
253 | status = lttng_event_rule_tracepoint_get_exclusion_at_index( | |
254 | _b, i, &exclusion_b); | |
255 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
256 | if (strcmp(exclusion_a, exclusion_b)) { | |
257 | goto end; | |
258 | } | |
259 | } | |
260 | ||
261 | is_equal = true; | |
262 | end: | |
263 | return is_equal; | |
264 | } | |
265 | ||
266 | /* | |
267 | * On success ret is 0; | |
268 | * | |
269 | * On error ret is negative. | |
270 | * | |
271 | * An event with NO loglevel and the name is * will return NULL. | |
272 | */ | |
273 | static int generate_agent_filter( | |
274 | const struct lttng_event_rule *rule, char **_agent_filter) | |
275 | { | |
276 | int err; | |
277 | int ret = 0; | |
278 | char *agent_filter = NULL; | |
279 | const char *pattern; | |
280 | const char *filter; | |
85b05318 | 281 | const struct lttng_log_level_rule *log_level_rule = NULL; |
6d420eff JR |
282 | enum lttng_event_rule_status status; |
283 | ||
284 | assert(rule); | |
285 | assert(_agent_filter); | |
286 | ||
287 | status = lttng_event_rule_tracepoint_get_pattern(rule, &pattern); | |
288 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
289 | ret = -1; | |
290 | goto end; | |
291 | } | |
292 | ||
293 | status = lttng_event_rule_tracepoint_get_filter(rule, &filter); | |
294 | if (status == LTTNG_EVENT_RULE_STATUS_UNSET) { | |
295 | filter = NULL; | |
296 | } else if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
297 | ret = -1; | |
298 | goto end; | |
299 | } | |
300 | ||
6d420eff JR |
301 | |
302 | /* Don't add filter for the '*' event. */ | |
303 | if (strcmp(pattern, "*") != 0) { | |
304 | if (filter) { | |
305 | err = asprintf(&agent_filter, | |
306 | "(%s) && (logger_name == \"%s\")", | |
307 | filter, pattern); | |
308 | } else { | |
309 | err = asprintf(&agent_filter, "logger_name == \"%s\"", | |
310 | pattern); | |
311 | } | |
312 | ||
313 | if (err < 0) { | |
314 | PERROR("Failed to format agent filter string"); | |
315 | ret = -1; | |
316 | goto end; | |
317 | } | |
318 | } | |
319 | ||
85b05318 JR |
320 | status = lttng_event_rule_tracepoint_get_log_level_rule( |
321 | rule, &log_level_rule); | |
322 | if (status == LTTNG_EVENT_RULE_STATUS_OK) { | |
323 | enum lttng_log_level_rule_status llr_status; | |
6d420eff | 324 | const char *op; |
85b05318 | 325 | int level; |
6d420eff | 326 | |
85b05318 JR |
327 | switch (lttng_log_level_rule_get_type(log_level_rule)) |
328 | { | |
329 | case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: | |
330 | llr_status = lttng_log_level_rule_exactly_get_level( | |
331 | log_level_rule, &level); | |
332 | op = "=="; | |
333 | break; | |
334 | case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: | |
335 | llr_status = lttng_log_level_rule_at_least_as_severe_as_get_level( | |
336 | log_level_rule, &level); | |
337 | op = ">="; | |
338 | break; | |
339 | default: | |
340 | abort(); | |
6d420eff JR |
341 | } |
342 | ||
85b05318 JR |
343 | if (llr_status != LTTNG_LOG_LEVEL_RULE_STATUS_OK) { |
344 | ret = -1; | |
345 | goto end; | |
6d420eff JR |
346 | } |
347 | ||
348 | if (filter || agent_filter) { | |
349 | char *new_filter; | |
350 | ||
351 | err = asprintf(&new_filter, | |
352 | "(%s) && (int_loglevel %s %d)", | |
353 | agent_filter ? agent_filter : filter, | |
85b05318 | 354 | op, level); |
6d420eff JR |
355 | if (agent_filter) { |
356 | free(agent_filter); | |
357 | } | |
358 | agent_filter = new_filter; | |
359 | } else { | |
360 | err = asprintf(&agent_filter, "int_loglevel %s %d", op, | |
85b05318 | 361 | level); |
6d420eff JR |
362 | } |
363 | ||
364 | if (err < 0) { | |
365 | PERROR("Failed to format agent filter string"); | |
366 | ret = -1; | |
367 | goto end; | |
368 | } | |
369 | } | |
370 | ||
371 | *_agent_filter = agent_filter; | |
372 | agent_filter = NULL; | |
373 | ||
374 | end: | |
375 | free(agent_filter); | |
376 | return ret; | |
377 | } | |
378 | ||
379 | static enum lttng_error_code | |
380 | lttng_event_rule_tracepoint_generate_filter_bytecode( | |
58daac01 JR |
381 | struct lttng_event_rule *rule, |
382 | const struct lttng_credentials *creds) | |
6d420eff JR |
383 | { |
384 | int ret; | |
385 | enum lttng_error_code ret_code; | |
386 | struct lttng_event_rule_tracepoint *tracepoint; | |
387 | enum lttng_domain_type domain_type; | |
388 | enum lttng_event_rule_status status; | |
389 | const char *filter; | |
2b00d462 | 390 | struct lttng_bytecode *bytecode = NULL; |
6d420eff JR |
391 | |
392 | assert(rule); | |
393 | ||
394 | tracepoint = container_of( | |
395 | rule, struct lttng_event_rule_tracepoint, parent); | |
396 | ||
397 | status = lttng_event_rule_tracepoint_get_filter(rule, &filter); | |
398 | if (status == LTTNG_EVENT_RULE_STATUS_UNSET) { | |
399 | filter = NULL; | |
400 | } else if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
401 | ret_code = LTTNG_ERR_FILTER_INVAL; | |
402 | goto end; | |
403 | } | |
404 | ||
405 | if (filter && filter[0] == '\0') { | |
406 | ret_code = LTTNG_ERR_FILTER_INVAL; | |
407 | goto error; | |
408 | } | |
409 | ||
410 | status = lttng_event_rule_tracepoint_get_domain_type( | |
411 | rule, &domain_type); | |
412 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
413 | ret_code = LTTNG_ERR_UNK; | |
414 | goto error; | |
415 | } | |
416 | ||
417 | switch (domain_type) { | |
418 | case LTTNG_DOMAIN_LOG4J: | |
419 | case LTTNG_DOMAIN_JUL: | |
420 | case LTTNG_DOMAIN_PYTHON: | |
421 | { | |
422 | char *agent_filter; | |
423 | ||
424 | ret = generate_agent_filter(rule, &agent_filter); | |
425 | if (ret) { | |
426 | ret_code = LTTNG_ERR_FILTER_INVAL; | |
427 | goto error; | |
428 | } | |
429 | ||
430 | tracepoint->internal_filter.filter = agent_filter; | |
431 | break; | |
432 | } | |
433 | default: | |
434 | { | |
435 | if (filter) { | |
436 | tracepoint->internal_filter.filter = strdup(filter); | |
437 | if (tracepoint->internal_filter.filter == NULL) { | |
438 | ret_code = LTTNG_ERR_NOMEM; | |
439 | goto error; | |
440 | } | |
441 | } else { | |
442 | tracepoint->internal_filter.filter = NULL; | |
443 | } | |
444 | break; | |
445 | } | |
446 | } | |
447 | ||
448 | if (tracepoint->internal_filter.filter == NULL) { | |
449 | ret_code = LTTNG_OK; | |
450 | goto end; | |
451 | } | |
452 | ||
453 | ret = run_as_generate_filter_bytecode( | |
58daac01 | 454 | tracepoint->internal_filter.filter, creds, |
6d420eff JR |
455 | &bytecode); |
456 | if (ret) { | |
457 | ret_code = LTTNG_ERR_FILTER_INVAL; | |
458 | goto end; | |
459 | } | |
460 | ||
461 | tracepoint->internal_filter.bytecode = bytecode; | |
462 | bytecode = NULL; | |
463 | ret_code = LTTNG_OK; | |
464 | ||
465 | error: | |
466 | end: | |
467 | free(bytecode); | |
468 | return ret_code; | |
469 | } | |
470 | ||
471 | static const char *lttng_event_rule_tracepoint_get_internal_filter( | |
472 | const struct lttng_event_rule *rule) | |
473 | { | |
474 | struct lttng_event_rule_tracepoint *tracepoint; | |
475 | ||
476 | assert(rule); | |
477 | tracepoint = container_of( | |
478 | rule, struct lttng_event_rule_tracepoint, parent); | |
479 | return tracepoint->internal_filter.filter; | |
480 | } | |
481 | ||
2b00d462 | 482 | static const struct lttng_bytecode * |
6d420eff JR |
483 | lttng_event_rule_tracepoint_get_internal_filter_bytecode( |
484 | const struct lttng_event_rule *rule) | |
485 | { | |
486 | struct lttng_event_rule_tracepoint *tracepoint; | |
487 | ||
488 | assert(rule); | |
489 | tracepoint = container_of( | |
490 | rule, struct lttng_event_rule_tracepoint, parent); | |
491 | return tracepoint->internal_filter.bytecode; | |
492 | } | |
493 | ||
993578ff | 494 | static enum lttng_event_rule_generate_exclusions_status |
6d420eff | 495 | lttng_event_rule_tracepoint_generate_exclusions( |
993578ff JR |
496 | const struct lttng_event_rule *rule, |
497 | struct lttng_event_exclusion **_exclusions) | |
6d420eff | 498 | { |
993578ff JR |
499 | unsigned int nb_exclusions = 0, i; |
500 | enum lttng_domain_type domain_type; | |
501 | struct lttng_event_exclusion *exclusions; | |
502 | enum lttng_event_rule_status event_rule_status; | |
503 | enum lttng_event_rule_generate_exclusions_status ret_status; | |
6d420eff | 504 | |
993578ff JR |
505 | assert(_exclusions); |
506 | ||
507 | event_rule_status = lttng_event_rule_tracepoint_get_domain_type( | |
508 | rule, &domain_type); | |
509 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK); | |
6d420eff JR |
510 | |
511 | switch (domain_type) { | |
512 | case LTTNG_DOMAIN_KERNEL: | |
513 | case LTTNG_DOMAIN_JUL: | |
514 | case LTTNG_DOMAIN_LOG4J: | |
515 | case LTTNG_DOMAIN_PYTHON: | |
516 | /* Not supported. */ | |
993578ff JR |
517 | exclusions = NULL; |
518 | ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_NONE; | |
6d420eff JR |
519 | goto end; |
520 | case LTTNG_DOMAIN_UST: | |
521 | /* Exclusions supported. */ | |
522 | break; | |
523 | default: | |
993578ff | 524 | /* Unknown domain. */ |
6d420eff JR |
525 | abort(); |
526 | } | |
527 | ||
993578ff | 528 | event_rule_status = lttng_event_rule_tracepoint_get_exclusions_count( |
6d420eff | 529 | rule, &nb_exclusions); |
993578ff | 530 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK); |
6d420eff JR |
531 | if (nb_exclusions == 0) { |
532 | /* Nothing to do. */ | |
993578ff JR |
533 | exclusions = NULL; |
534 | ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_NONE; | |
6d420eff JR |
535 | goto end; |
536 | } | |
537 | ||
993578ff JR |
538 | exclusions = zmalloc(sizeof(struct lttng_event_exclusion) + |
539 | (LTTNG_SYMBOL_NAME_LEN * nb_exclusions)); | |
540 | if (!exclusions) { | |
6d420eff | 541 | PERROR("Failed to allocate exclusions buffer"); |
993578ff | 542 | ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_OUT_OF_MEMORY; |
6d420eff JR |
543 | goto end; |
544 | } | |
545 | ||
993578ff | 546 | exclusions->count = nb_exclusions; |
6d420eff | 547 | for (i = 0; i < nb_exclusions; i++) { |
993578ff JR |
548 | int copy_ret; |
549 | const char *exclusion_str; | |
550 | ||
551 | event_rule_status = | |
552 | lttng_event_rule_tracepoint_get_exclusion_at_index( | |
553 | rule, i, &exclusion_str); | |
554 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK); | |
555 | ||
556 | copy_ret = lttng_strncpy(exclusions->names[i], exclusion_str, | |
557 | LTTNG_SYMBOL_NAME_LEN); | |
558 | if (copy_ret) { | |
559 | free(exclusions); | |
560 | exclusions = NULL; | |
561 | ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_ERROR; | |
562 | goto end; | |
563 | } | |
6d420eff JR |
564 | } |
565 | ||
993578ff JR |
566 | ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_OK; |
567 | ||
6d420eff | 568 | end: |
993578ff JR |
569 | *_exclusions = exclusions; |
570 | return ret_status; | |
6d420eff JR |
571 | } |
572 | ||
573 | static void destroy_lttng_exclusions_element(void *ptr) | |
574 | { | |
575 | free(ptr); | |
576 | } | |
577 | ||
959e3c66 JR |
578 | static unsigned long lttng_event_rule_tracepoint_hash( |
579 | const struct lttng_event_rule *rule) | |
580 | { | |
581 | unsigned long hash; | |
582 | unsigned int i, exclusion_count; | |
583 | enum lttng_event_rule_status status; | |
584 | struct lttng_event_rule_tracepoint *tp_rule = | |
585 | container_of(rule, typeof(*tp_rule), parent); | |
586 | ||
587 | hash = hash_key_ulong((void *) LTTNG_EVENT_RULE_TYPE_TRACEPOINT, | |
588 | lttng_ht_seed); | |
589 | hash ^= hash_key_ulong((void *) tp_rule->domain, lttng_ht_seed); | |
590 | hash ^= hash_key_str(tp_rule->pattern, lttng_ht_seed); | |
591 | ||
592 | if (tp_rule->filter_expression) { | |
593 | hash ^= hash_key_str(tp_rule->filter_expression, lttng_ht_seed); | |
594 | } | |
595 | ||
85b05318 JR |
596 | if (tp_rule->log_level_rule) { |
597 | hash ^= lttng_log_level_rule_hash(tp_rule->log_level_rule); | |
959e3c66 JR |
598 | } |
599 | ||
600 | status = lttng_event_rule_tracepoint_get_exclusions_count(rule, | |
601 | &exclusion_count); | |
602 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
603 | ||
604 | for (i = 0; i < exclusion_count; i++) { | |
605 | const char *exclusion; | |
606 | ||
607 | status = lttng_event_rule_tracepoint_get_exclusion_at_index( | |
608 | rule, i, &exclusion); | |
609 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
610 | hash ^= hash_key_str(exclusion, lttng_ht_seed); | |
611 | } | |
612 | ||
613 | return hash; | |
614 | } | |
615 | ||
44760c20 JR |
616 | static struct lttng_event *lttng_event_rule_tracepoint_generate_lttng_event( |
617 | const struct lttng_event_rule *rule) | |
618 | { | |
619 | int ret; | |
620 | const struct lttng_event_rule_tracepoint *tracepoint; | |
621 | struct lttng_event *local_event = NULL; | |
622 | struct lttng_event *event = NULL; | |
85b05318 JR |
623 | enum lttng_loglevel_type loglevel_type; |
624 | int loglevel_value = 0; | |
625 | enum lttng_event_rule_status status; | |
626 | const struct lttng_log_level_rule *log_level_rule; | |
44760c20 JR |
627 | |
628 | tracepoint = container_of( | |
629 | rule, const struct lttng_event_rule_tracepoint, parent); | |
630 | ||
631 | local_event = zmalloc(sizeof(*local_event)); | |
632 | if (!local_event) { | |
633 | goto error; | |
634 | } | |
635 | ||
636 | local_event->type = LTTNG_EVENT_TRACEPOINT; | |
637 | ret = lttng_strncpy(local_event->name, tracepoint->pattern, | |
638 | sizeof(local_event->name)); | |
639 | if (ret) { | |
640 | ERR("Truncation occurred when copying event rule pattern to `lttng_event` structure: pattern = '%s'", | |
641 | tracepoint->pattern); | |
642 | goto error; | |
643 | } | |
644 | ||
85b05318 JR |
645 | |
646 | /* Map the log level rule to an equivalent lttng_loglevel. */ | |
647 | status = lttng_event_rule_tracepoint_get_log_level_rule( | |
648 | rule, &log_level_rule); | |
649 | if (status == LTTNG_EVENT_RULE_STATUS_UNSET) { | |
650 | loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; | |
651 | loglevel_value = 0; | |
652 | } else if (status == LTTNG_EVENT_RULE_STATUS_OK) { | |
653 | enum lttng_log_level_rule_status llr_status; | |
654 | ||
655 | switch (lttng_log_level_rule_get_type(log_level_rule)) { | |
656 | case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: | |
657 | llr_status = lttng_log_level_rule_exactly_get_level( | |
658 | log_level_rule, &loglevel_value); | |
659 | loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
660 | break; | |
661 | case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: | |
662 | llr_status = lttng_log_level_rule_at_least_as_severe_as_get_level( | |
663 | log_level_rule, &loglevel_value); | |
664 | loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; | |
665 | break; | |
666 | default: | |
667 | abort(); | |
668 | break; | |
669 | } | |
670 | ||
671 | if (llr_status != LTTNG_LOG_LEVEL_RULE_STATUS_OK) { | |
672 | goto error; | |
673 | } | |
674 | } else { | |
675 | goto error; | |
676 | } | |
677 | ||
678 | local_event->loglevel_type = loglevel_type; | |
679 | local_event->loglevel = loglevel_value; | |
44760c20 JR |
680 | |
681 | event = local_event; | |
682 | local_event = NULL; | |
683 | error: | |
684 | free(local_event); | |
685 | return event; | |
686 | } | |
687 | ||
6d420eff JR |
688 | struct lttng_event_rule *lttng_event_rule_tracepoint_create( |
689 | enum lttng_domain_type domain_type) | |
690 | { | |
691 | struct lttng_event_rule *rule = NULL; | |
692 | struct lttng_event_rule_tracepoint *tp_rule; | |
cb6096aa | 693 | enum lttng_event_rule_status status; |
6d420eff JR |
694 | |
695 | if (domain_type == LTTNG_DOMAIN_NONE) { | |
696 | goto end; | |
697 | } | |
698 | ||
699 | tp_rule = zmalloc(sizeof(struct lttng_event_rule_tracepoint)); | |
700 | if (!tp_rule) { | |
701 | goto end; | |
702 | } | |
703 | ||
704 | rule = &tp_rule->parent; | |
705 | lttng_event_rule_init(&tp_rule->parent, LTTNG_EVENT_RULE_TYPE_TRACEPOINT); | |
706 | tp_rule->parent.validate = lttng_event_rule_tracepoint_validate; | |
707 | tp_rule->parent.serialize = lttng_event_rule_tracepoint_serialize; | |
708 | tp_rule->parent.equal = lttng_event_rule_tracepoint_is_equal; | |
709 | tp_rule->parent.destroy = lttng_event_rule_tracepoint_destroy; | |
710 | tp_rule->parent.generate_filter_bytecode = | |
711 | lttng_event_rule_tracepoint_generate_filter_bytecode; | |
712 | tp_rule->parent.get_filter = | |
713 | lttng_event_rule_tracepoint_get_internal_filter; | |
714 | tp_rule->parent.get_filter_bytecode = | |
715 | lttng_event_rule_tracepoint_get_internal_filter_bytecode; | |
716 | tp_rule->parent.generate_exclusions = | |
717 | lttng_event_rule_tracepoint_generate_exclusions; | |
959e3c66 | 718 | tp_rule->parent.hash = lttng_event_rule_tracepoint_hash; |
44760c20 JR |
719 | tp_rule->parent.generate_lttng_event = |
720 | lttng_event_rule_tracepoint_generate_lttng_event; | |
6d420eff JR |
721 | |
722 | tp_rule->domain = domain_type; | |
85b05318 | 723 | tp_rule->log_level_rule = NULL; |
6d420eff JR |
724 | |
725 | lttng_dynamic_pointer_array_init(&tp_rule->exclusions, | |
726 | destroy_lttng_exclusions_element); | |
cb6096aa JR |
727 | |
728 | /* Default pattern is '*'. */ | |
729 | status = lttng_event_rule_tracepoint_set_pattern(rule, "*"); | |
730 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
731 | lttng_event_rule_destroy(rule); | |
732 | rule = NULL; | |
733 | } | |
734 | ||
6d420eff JR |
735 | end: |
736 | return rule; | |
737 | } | |
738 | ||
739 | LTTNG_HIDDEN | |
740 | ssize_t lttng_event_rule_tracepoint_create_from_payload( | |
741 | struct lttng_payload_view *view, | |
742 | struct lttng_event_rule **_event_rule) | |
743 | { | |
744 | ssize_t ret, offset = 0; | |
745 | int i; | |
746 | enum lttng_event_rule_status status; | |
747 | enum lttng_domain_type domain_type; | |
6d420eff JR |
748 | const struct lttng_event_rule_tracepoint_comm *tracepoint_comm; |
749 | const char *pattern; | |
750 | const char *filter_expression = NULL; | |
751 | const char **exclusions = NULL; | |
752 | const uint32_t *exclusion_len; | |
753 | const char *exclusion; | |
754 | struct lttng_buffer_view current_buffer_view; | |
755 | struct lttng_event_rule *rule = NULL; | |
85b05318 | 756 | struct lttng_log_level_rule *log_level_rule = NULL; |
6d420eff JR |
757 | |
758 | if (!_event_rule) { | |
759 | ret = -1; | |
760 | goto end; | |
761 | } | |
762 | ||
3e6e0df2 JG |
763 | current_buffer_view = lttng_buffer_view_from_view( |
764 | &view->buffer, offset, sizeof(*tracepoint_comm)); | |
765 | if (!lttng_buffer_view_is_valid(¤t_buffer_view)) { | |
6d420eff JR |
766 | ERR("Failed to initialize from malformed event rule tracepoint: buffer too short to contain header."); |
767 | ret = -1; | |
768 | goto end; | |
769 | } | |
770 | ||
6d420eff JR |
771 | tracepoint_comm = (typeof(tracepoint_comm)) current_buffer_view.data; |
772 | ||
6d420eff JR |
773 | if (tracepoint_comm->domain_type <= LTTNG_DOMAIN_NONE || |
774 | tracepoint_comm->domain_type > LTTNG_DOMAIN_PYTHON) { | |
775 | /* Invalid domain value. */ | |
776 | ERR("Invalid domain type value (%i) found in tracepoint_comm buffer.", | |
777 | (int) tracepoint_comm->domain_type); | |
778 | ret = -1; | |
779 | goto end; | |
780 | } | |
781 | ||
782 | domain_type = (enum lttng_domain_type) tracepoint_comm->domain_type; | |
783 | rule = lttng_event_rule_tracepoint_create(domain_type); | |
784 | if (!rule) { | |
785 | ERR("Failed to create event rule tracepoint."); | |
786 | ret = -1; | |
787 | goto end; | |
788 | } | |
789 | ||
6d420eff JR |
790 | /* Skip to payload. */ |
791 | offset += current_buffer_view.size; | |
792 | ||
793 | /* Map the pattern. */ | |
794 | current_buffer_view = lttng_buffer_view_from_view( | |
795 | &view->buffer, offset, tracepoint_comm->pattern_len); | |
3e6e0df2 JG |
796 | |
797 | if (!lttng_buffer_view_is_valid(¤t_buffer_view)) { | |
6d420eff JR |
798 | ret = -1; |
799 | goto end; | |
800 | } | |
801 | ||
3e6e0df2 | 802 | pattern = current_buffer_view.data; |
6d420eff JR |
803 | if (!lttng_buffer_view_contains_string(¤t_buffer_view, pattern, |
804 | tracepoint_comm->pattern_len)) { | |
805 | ret = -1; | |
806 | goto end; | |
807 | } | |
808 | ||
809 | /* Skip after the pattern. */ | |
810 | offset += tracepoint_comm->pattern_len; | |
811 | ||
812 | if (!tracepoint_comm->filter_expression_len) { | |
813 | goto skip_filter_expression; | |
814 | } | |
815 | ||
816 | /* Map the filter_expression. */ | |
817 | current_buffer_view = lttng_buffer_view_from_view(&view->buffer, offset, | |
818 | tracepoint_comm->filter_expression_len); | |
3e6e0df2 | 819 | if (!lttng_buffer_view_is_valid(¤t_buffer_view)) { |
6d420eff JR |
820 | ret = -1; |
821 | goto end; | |
822 | } | |
823 | ||
3e6e0df2 | 824 | filter_expression = current_buffer_view.data; |
6d420eff JR |
825 | if (!lttng_buffer_view_contains_string(¤t_buffer_view, |
826 | filter_expression, | |
827 | tracepoint_comm->filter_expression_len)) { | |
828 | ret = -1; | |
829 | goto end; | |
830 | } | |
831 | ||
832 | /* Skip after the pattern. */ | |
833 | offset += tracepoint_comm->filter_expression_len; | |
834 | ||
835 | skip_filter_expression: | |
85b05318 JR |
836 | if (!tracepoint_comm->log_level_rule_len) { |
837 | goto skip_log_level_rule; | |
838 | } | |
839 | ||
840 | { | |
841 | /* Map the log level rule. */ | |
842 | struct lttng_payload_view current_payload_view = | |
843 | lttng_payload_view_from_view(view, offset, | |
844 | tracepoint_comm->log_level_rule_len); | |
845 | ||
846 | ret = lttng_log_level_rule_create_from_payload( | |
847 | ¤t_payload_view, &log_level_rule); | |
848 | if (ret < 0) { | |
849 | ret = -1; | |
850 | goto end; | |
851 | } | |
852 | ||
853 | assert(ret == tracepoint_comm->log_level_rule_len); | |
854 | } | |
855 | ||
856 | /* Skip after the log level rule. */ | |
857 | offset += tracepoint_comm->log_level_rule_len; | |
858 | ||
859 | skip_log_level_rule: | |
6d420eff JR |
860 | for (i = 0; i < tracepoint_comm->exclusions_count; i++) { |
861 | current_buffer_view = lttng_buffer_view_from_view( | |
862 | &view->buffer, offset, sizeof(*exclusion_len)); | |
3e6e0df2 | 863 | if (!lttng_buffer_view_is_valid(¤t_buffer_view)) { |
6d420eff JR |
864 | ret = -1; |
865 | goto end; | |
866 | } | |
867 | ||
3e6e0df2 | 868 | exclusion_len = (typeof(exclusion_len)) current_buffer_view.data; |
6d420eff | 869 | offset += sizeof(*exclusion_len); |
3e6e0df2 | 870 | |
6d420eff JR |
871 | current_buffer_view = lttng_buffer_view_from_view( |
872 | &view->buffer, offset, *exclusion_len); | |
3e6e0df2 JG |
873 | if (!lttng_buffer_view_is_valid(¤t_buffer_view)) { |
874 | ret = -1; | |
875 | goto end; | |
876 | } | |
877 | ||
6d420eff JR |
878 | exclusion = current_buffer_view.data; |
879 | if (!lttng_buffer_view_contains_string(¤t_buffer_view, | |
880 | exclusion, *exclusion_len)) { | |
881 | ret = -1; | |
882 | goto end; | |
883 | } | |
884 | ||
885 | status = lttng_event_rule_tracepoint_add_exclusion(rule, exclusion); | |
886 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
887 | ERR("Failed to add event rule tracepoint exclusion \"%s\".", | |
888 | exclusion); | |
889 | ret = -1; | |
890 | goto end; | |
891 | } | |
892 | ||
893 | /* Skip to next exclusion. */ | |
894 | offset += *exclusion_len; | |
895 | } | |
896 | ||
897 | status = lttng_event_rule_tracepoint_set_pattern(rule, pattern); | |
898 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
899 | ERR("Failed to set event rule tracepoint pattern."); | |
900 | ret = -1; | |
901 | goto end; | |
902 | } | |
903 | ||
904 | if (filter_expression) { | |
905 | status = lttng_event_rule_tracepoint_set_filter( | |
906 | rule, filter_expression); | |
907 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
908 | ERR("Failed to set event rule tracepoint pattern."); | |
909 | ret = -1; | |
910 | goto end; | |
911 | } | |
912 | } | |
913 | ||
85b05318 JR |
914 | if (log_level_rule) { |
915 | status = lttng_event_rule_tracepoint_set_log_level_rule( | |
916 | rule, log_level_rule); | |
917 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
918 | ERR("Failed to set event rule tracepoint log level rule."); | |
919 | ret = -1; | |
920 | goto end; | |
921 | } | |
922 | } | |
923 | ||
6d420eff JR |
924 | *_event_rule = rule; |
925 | rule = NULL; | |
926 | ret = offset; | |
927 | end: | |
928 | free(exclusions); | |
85b05318 | 929 | lttng_log_level_rule_destroy(log_level_rule); |
6d420eff JR |
930 | lttng_event_rule_destroy(rule); |
931 | return ret; | |
932 | } | |
933 | ||
934 | enum lttng_event_rule_status lttng_event_rule_tracepoint_set_pattern( | |
935 | struct lttng_event_rule *rule, const char *pattern) | |
936 | { | |
937 | char *pattern_copy = NULL; | |
938 | struct lttng_event_rule_tracepoint *tracepoint; | |
939 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
940 | ||
941 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !pattern || | |
942 | strlen(pattern) == 0) { | |
943 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
944 | goto end; | |
945 | } | |
946 | ||
947 | tracepoint = container_of( | |
948 | rule, struct lttng_event_rule_tracepoint, parent); | |
949 | pattern_copy = strdup(pattern); | |
950 | if (!pattern_copy) { | |
951 | status = LTTNG_EVENT_RULE_STATUS_ERROR; | |
952 | goto end; | |
953 | } | |
954 | ||
955 | free(tracepoint->pattern); | |
956 | ||
957 | tracepoint->pattern = pattern_copy; | |
958 | pattern_copy = NULL; | |
959 | end: | |
960 | return status; | |
961 | } | |
962 | ||
963 | enum lttng_event_rule_status lttng_event_rule_tracepoint_get_pattern( | |
964 | const struct lttng_event_rule *rule, const char **pattern) | |
965 | { | |
966 | struct lttng_event_rule_tracepoint *tracepoint; | |
967 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
968 | ||
969 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !pattern) { | |
970 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
971 | goto end; | |
972 | } | |
973 | ||
974 | tracepoint = container_of( | |
975 | rule, struct lttng_event_rule_tracepoint, parent); | |
976 | if (!tracepoint->pattern) { | |
977 | status = LTTNG_EVENT_RULE_STATUS_UNSET; | |
978 | goto end; | |
979 | } | |
980 | ||
981 | *pattern = tracepoint->pattern; | |
982 | end: | |
983 | return status; | |
984 | } | |
985 | ||
986 | enum lttng_event_rule_status lttng_event_rule_tracepoint_get_domain_type( | |
987 | const struct lttng_event_rule *rule, | |
988 | enum lttng_domain_type *type) | |
989 | { | |
990 | struct lttng_event_rule_tracepoint *tracepoint; | |
991 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
992 | ||
993 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !type) { | |
994 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
995 | goto end; | |
996 | } | |
997 | ||
998 | tracepoint = container_of( | |
999 | rule, struct lttng_event_rule_tracepoint, parent); | |
1000 | *type = tracepoint->domain; | |
1001 | end: | |
1002 | return status; | |
1003 | } | |
1004 | ||
1005 | enum lttng_event_rule_status lttng_event_rule_tracepoint_set_filter( | |
1006 | struct lttng_event_rule *rule, const char *expression) | |
1007 | { | |
1008 | char *expression_copy = NULL; | |
1009 | struct lttng_event_rule_tracepoint *tracepoint; | |
1010 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
1011 | ||
1012 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !expression || | |
1013 | strlen(expression) == 0) { | |
1014 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
1015 | goto end; | |
1016 | } | |
1017 | ||
1018 | tracepoint = container_of( | |
1019 | rule, struct lttng_event_rule_tracepoint, parent); | |
1020 | expression_copy = strdup(expression); | |
1021 | if (!expression_copy) { | |
1022 | PERROR("Failed to copy filter expression"); | |
1023 | status = LTTNG_EVENT_RULE_STATUS_ERROR; | |
1024 | goto end; | |
1025 | } | |
1026 | ||
1027 | if (tracepoint->filter_expression) { | |
1028 | free(tracepoint->filter_expression); | |
1029 | } | |
1030 | ||
1031 | tracepoint->filter_expression = expression_copy; | |
1032 | expression_copy = NULL; | |
1033 | end: | |
1034 | return status; | |
1035 | } | |
1036 | ||
1037 | enum lttng_event_rule_status lttng_event_rule_tracepoint_get_filter( | |
1038 | const struct lttng_event_rule *rule, const char **expression) | |
1039 | { | |
1040 | struct lttng_event_rule_tracepoint *tracepoint; | |
1041 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
1042 | ||
1043 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !expression) { | |
1044 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
1045 | goto end; | |
1046 | } | |
1047 | ||
1048 | tracepoint = container_of( | |
1049 | rule, struct lttng_event_rule_tracepoint, parent); | |
1050 | if (!tracepoint->filter_expression) { | |
1051 | status = LTTNG_EVENT_RULE_STATUS_UNSET; | |
1052 | goto end; | |
1053 | } | |
1054 | ||
1055 | *expression = tracepoint->filter_expression; | |
1056 | end: | |
1057 | return status; | |
1058 | } | |
1059 | ||
85b05318 JR |
1060 | static bool log_level_rule_valid(const struct lttng_log_level_rule *rule, |
1061 | enum lttng_domain_type domain) | |
6d420eff JR |
1062 | { |
1063 | bool valid = false; | |
85b05318 JR |
1064 | enum lttng_log_level_rule_status status; |
1065 | int level; | |
1066 | ||
1067 | switch (lttng_log_level_rule_get_type(rule)) { | |
1068 | case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: | |
1069 | status = lttng_log_level_rule_exactly_get_level(rule, &level); | |
1070 | break; | |
1071 | case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: | |
1072 | status = lttng_log_level_rule_at_least_as_severe_as_get_level( | |
1073 | rule, &level); | |
1074 | break; | |
1075 | default: | |
1076 | abort(); | |
1077 | } | |
1078 | ||
1079 | assert(status == LTTNG_LOG_LEVEL_RULE_STATUS_OK); | |
6d420eff JR |
1080 | |
1081 | switch (domain) { | |
1082 | case LTTNG_DOMAIN_KERNEL: | |
85b05318 JR |
1083 | valid = false; |
1084 | break; | |
6d420eff JR |
1085 | case LTTNG_DOMAIN_UST: |
1086 | if (level < LTTNG_LOGLEVEL_EMERG) { | |
1087 | /* Invalid. */ | |
1088 | goto end; | |
1089 | } | |
1090 | if (level > LTTNG_LOGLEVEL_DEBUG) { | |
1091 | /* Invalid. */ | |
1092 | goto end; | |
1093 | } | |
1094 | ||
1095 | valid = true; | |
1096 | break; | |
1097 | case LTTNG_DOMAIN_JUL: | |
1098 | case LTTNG_DOMAIN_LOG4J: | |
1099 | case LTTNG_DOMAIN_PYTHON: | |
1100 | /* | |
1101 | * For both JUL and LOG4J custom log level are possible and can | |
85b05318 JR |
1102 | * span the entire int32 range. |
1103 | * | |
6d420eff JR |
1104 | * For python, custom log level are possible, it is not clear if |
1105 | * negative value are accepted (NOTSET == 0) but the source code | |
85b05318 | 1106 | * validates against the int type implying that negative values |
6d420eff JR |
1107 | * are accepted. |
1108 | */ | |
1109 | valid = true; | |
1110 | goto end; | |
6d420eff JR |
1111 | case LTTNG_DOMAIN_NONE: |
1112 | default: | |
1113 | abort(); | |
1114 | } | |
1115 | ||
1116 | end: | |
1117 | return valid; | |
1118 | } | |
1119 | ||
2222db74 JG |
1120 | static bool domain_supports_log_levels(enum lttng_domain_type domain) |
1121 | { | |
1122 | bool supported; | |
1123 | ||
1124 | switch (domain) { | |
1125 | case LTTNG_DOMAIN_KERNEL: | |
1126 | supported = false; | |
1127 | break; | |
1128 | case LTTNG_DOMAIN_UST: | |
1129 | case LTTNG_DOMAIN_JUL: | |
1130 | case LTTNG_DOMAIN_LOG4J: | |
1131 | case LTTNG_DOMAIN_PYTHON: | |
1132 | supported = true; | |
1133 | break; | |
1134 | default: | |
1135 | abort(); | |
1136 | } | |
1137 | ||
1138 | return supported; | |
1139 | } | |
1140 | ||
85b05318 JR |
1141 | enum lttng_event_rule_status lttng_event_rule_tracepoint_set_log_level_rule( |
1142 | struct lttng_event_rule *rule, | |
1143 | const struct lttng_log_level_rule *log_level_rule) | |
6d420eff JR |
1144 | { |
1145 | struct lttng_event_rule_tracepoint *tracepoint; | |
1146 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
85b05318 | 1147 | struct lttng_log_level_rule *copy = NULL; |
6d420eff JR |
1148 | |
1149 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule)) { | |
1150 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
1151 | goto end; | |
1152 | } | |
1153 | ||
1154 | tracepoint = container_of( | |
1155 | rule, struct lttng_event_rule_tracepoint, parent); | |
1156 | ||
2222db74 JG |
1157 | if (!domain_supports_log_levels(tracepoint->domain)) { |
1158 | status = LTTNG_EVENT_RULE_STATUS_UNSUPPORTED; | |
1159 | goto end; | |
1160 | } | |
1161 | ||
85b05318 | 1162 | if (!log_level_rule_valid(log_level_rule, tracepoint->domain)) { |
6d420eff JR |
1163 | status = LTTNG_EVENT_RULE_STATUS_INVALID; |
1164 | goto end; | |
1165 | } | |
1166 | ||
85b05318 JR |
1167 | copy = lttng_log_level_rule_copy(log_level_rule); |
1168 | if (copy == NULL) { | |
1169 | status = LTTNG_EVENT_RULE_STATUS_ERROR; | |
6d420eff JR |
1170 | goto end; |
1171 | } | |
1172 | ||
85b05318 JR |
1173 | if (tracepoint->log_level_rule) { |
1174 | lttng_log_level_rule_destroy(tracepoint->log_level_rule); | |
6d420eff JR |
1175 | } |
1176 | ||
85b05318 | 1177 | tracepoint->log_level_rule = copy; |
6d420eff | 1178 | |
6d420eff JR |
1179 | end: |
1180 | return status; | |
1181 | } | |
1182 | ||
85b05318 | 1183 | enum lttng_event_rule_status lttng_event_rule_tracepoint_get_log_level_rule( |
6d420eff | 1184 | const struct lttng_event_rule *rule, |
85b05318 JR |
1185 | const struct lttng_log_level_rule **log_level_rule |
1186 | ) | |
6d420eff JR |
1187 | { |
1188 | struct lttng_event_rule_tracepoint *tracepoint; | |
1189 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
1190 | ||
85b05318 | 1191 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !log_level_rule) { |
6d420eff JR |
1192 | status = LTTNG_EVENT_RULE_STATUS_INVALID; |
1193 | goto end; | |
1194 | } | |
1195 | ||
1196 | tracepoint = container_of( | |
1197 | rule, struct lttng_event_rule_tracepoint, parent); | |
85b05318 | 1198 | if (tracepoint->log_level_rule == NULL) { |
6d420eff JR |
1199 | status = LTTNG_EVENT_RULE_STATUS_UNSET; |
1200 | goto end; | |
1201 | } | |
1202 | ||
85b05318 | 1203 | *log_level_rule = tracepoint->log_level_rule; |
6d420eff JR |
1204 | end: |
1205 | return status; | |
1206 | } | |
1207 | ||
1208 | enum lttng_event_rule_status lttng_event_rule_tracepoint_add_exclusion( | |
1209 | struct lttng_event_rule *rule, | |
1210 | const char *exclusion) | |
1211 | { | |
1212 | int ret; | |
1213 | char *exclusion_copy = NULL; | |
1214 | struct lttng_event_rule_tracepoint *tracepoint; | |
1215 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
1216 | enum lttng_domain_type domain_type; | |
1217 | ||
1218 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || | |
1219 | !exclusion) { | |
1220 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
1221 | goto end; | |
1222 | } | |
1223 | ||
1224 | tracepoint = container_of( | |
1225 | rule, struct lttng_event_rule_tracepoint, parent); | |
1226 | ||
1227 | status = lttng_event_rule_tracepoint_get_domain_type( | |
1228 | rule, &domain_type); | |
1229 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1230 | goto end; | |
1231 | } | |
1232 | ||
1233 | switch (domain_type) { | |
1234 | case LTTNG_DOMAIN_KERNEL: | |
1235 | case LTTNG_DOMAIN_JUL: | |
1236 | case LTTNG_DOMAIN_LOG4J: | |
1237 | case LTTNG_DOMAIN_PYTHON: | |
1238 | status = LTTNG_EVENT_RULE_STATUS_UNSUPPORTED; | |
1239 | goto end; | |
1240 | case LTTNG_DOMAIN_UST: | |
1241 | /* Exclusions supported. */ | |
1242 | break; | |
1243 | default: | |
1244 | abort(); | |
1245 | } | |
1246 | ||
1247 | if (strlen(exclusion) >= LTTNG_SYMBOL_NAME_LEN) { | |
1248 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
1249 | goto end; | |
1250 | } | |
1251 | ||
1252 | exclusion_copy = strdup(exclusion); | |
1253 | if (!exclusion_copy) { | |
1254 | status = LTTNG_EVENT_RULE_STATUS_ERROR; | |
1255 | goto end; | |
1256 | } | |
1257 | ||
1258 | ret = lttng_dynamic_pointer_array_add_pointer(&tracepoint->exclusions, | |
1259 | exclusion_copy); | |
1260 | if (ret < 0) { | |
1261 | status = LTTNG_EVENT_RULE_STATUS_ERROR; | |
1262 | goto end; | |
1263 | } | |
1264 | ||
1265 | exclusion_copy = NULL; | |
1266 | end: | |
1267 | free(exclusion_copy); | |
1268 | return status; | |
1269 | } | |
1270 | ||
1271 | enum lttng_event_rule_status lttng_event_rule_tracepoint_get_exclusions_count( | |
1272 | const struct lttng_event_rule *rule, unsigned int *count) | |
1273 | { | |
1274 | struct lttng_event_rule_tracepoint *tracepoint; | |
1275 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
1276 | ||
1277 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !count) { | |
1278 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
1279 | goto end; | |
1280 | } | |
1281 | ||
1282 | tracepoint = container_of( | |
1283 | rule, struct lttng_event_rule_tracepoint, parent); | |
1284 | *count = lttng_dynamic_pointer_array_get_count(&tracepoint->exclusions); | |
1285 | end: | |
1286 | return status; | |
1287 | } | |
1288 | ||
1289 | enum lttng_event_rule_status lttng_event_rule_tracepoint_get_exclusion_at_index( | |
1290 | const struct lttng_event_rule *rule, | |
1291 | unsigned int index, | |
1292 | const char **exclusion) | |
1293 | { | |
1294 | unsigned int count; | |
1295 | struct lttng_event_rule_tracepoint *tracepoint; | |
1296 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
1297 | ||
1298 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !exclusion) { | |
1299 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
1300 | goto end; | |
1301 | } | |
1302 | ||
1303 | tracepoint = container_of( | |
1304 | rule, struct lttng_event_rule_tracepoint, parent); | |
1305 | if (lttng_event_rule_tracepoint_get_exclusions_count(rule, &count) != | |
1306 | LTTNG_EVENT_RULE_STATUS_OK) { | |
1307 | goto end; | |
1308 | } | |
1309 | ||
1310 | if (index >= count) { | |
1311 | goto end; | |
1312 | } | |
1313 | ||
1314 | *exclusion = lttng_dynamic_pointer_array_get_pointer( | |
1315 | &tracepoint->exclusions, index); | |
1316 | end: | |
1317 | return status; | |
1318 | } |