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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> | |
c3e68e71 | 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> | |
c3e68e71 | 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; | |
c3e68e71 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; | |
c3e68e71 | 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 | ||
c3e68e71 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 | ||
c3e68e71 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 = payload->buffer.size - size_before_log_level_rule; | |
159 | ||
6d420eff JR |
160 | for (i = 0; i < exclusion_count; i++) { |
161 | size_t len; | |
162 | const char *exclusion; | |
163 | ||
164 | status = lttng_event_rule_tracepoint_get_exclusion_at_index( | |
165 | rule, i, &exclusion); | |
166 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
167 | ||
168 | len = strlen(exclusion) + 1; | |
169 | /* Append exclusion length, includes the null terminator. */ | |
170 | ret = lttng_dynamic_buffer_append( | |
171 | &payload->buffer, &len, sizeof(uint32_t)); | |
172 | if (ret) { | |
173 | goto end; | |
174 | } | |
175 | ||
176 | exclusions_appended_len += sizeof(uint32_t); | |
177 | ||
178 | /* Include the '\0' in the payload. */ | |
179 | ret = lttng_dynamic_buffer_append( | |
180 | &payload->buffer, exclusion, len); | |
181 | if (ret) { | |
182 | goto end; | |
183 | } | |
184 | ||
185 | exclusions_appended_len += len; | |
186 | } | |
187 | ||
188 | assert(exclusions_len == exclusions_appended_len); | |
189 | ||
190 | end: | |
191 | return ret; | |
192 | } | |
193 | ||
194 | static bool lttng_event_rule_tracepoint_is_equal( | |
195 | const struct lttng_event_rule *_a, | |
196 | const struct lttng_event_rule *_b) | |
197 | { | |
198 | int i; | |
199 | bool is_equal = false; | |
200 | struct lttng_event_rule_tracepoint *a, *b; | |
201 | unsigned int count_a, count_b; | |
202 | enum lttng_event_rule_status status; | |
203 | ||
204 | a = container_of(_a, struct lttng_event_rule_tracepoint, parent); | |
205 | b = container_of(_b, struct lttng_event_rule_tracepoint, parent); | |
206 | ||
207 | status = lttng_event_rule_tracepoint_get_exclusions_count(_a, &count_a); | |
208 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
209 | status = lttng_event_rule_tracepoint_get_exclusions_count(_b, &count_b); | |
210 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
211 | ||
212 | /* Quick checks. */ | |
213 | if (a->domain != b->domain) { | |
214 | goto end; | |
215 | } | |
216 | ||
217 | if (count_a != count_b) { | |
218 | goto end; | |
219 | } | |
220 | ||
221 | if (!!a->filter_expression != !!b->filter_expression) { | |
222 | goto end; | |
223 | } | |
224 | ||
225 | /* Long check. */ | |
226 | assert(a->pattern); | |
227 | assert(b->pattern); | |
228 | if (strcmp(a->pattern, b->pattern)) { | |
229 | goto end; | |
230 | } | |
231 | ||
232 | if (a->filter_expression && b->filter_expression) { | |
233 | if (strcmp(a->filter_expression, b->filter_expression)) { | |
234 | goto end; | |
235 | } | |
236 | } else if (!!a->filter_expression != !!b->filter_expression) { | |
237 | /* One is set; not the other. */ | |
238 | goto end; | |
239 | } | |
240 | ||
c3e68e71 | 241 | if (!lttng_log_level_rule_is_equal(a->log_level_rule, b->log_level_rule)) { |
6d420eff JR |
242 | goto end; |
243 | } | |
244 | ||
245 | for (i = 0; i < count_a; i++) { | |
246 | const char *exclusion_a, *exclusion_b; | |
247 | ||
248 | status = lttng_event_rule_tracepoint_get_exclusion_at_index( | |
249 | _a, i, &exclusion_a); | |
250 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
251 | status = lttng_event_rule_tracepoint_get_exclusion_at_index( | |
252 | _b, i, &exclusion_b); | |
253 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
254 | if (strcmp(exclusion_a, exclusion_b)) { | |
255 | goto end; | |
256 | } | |
257 | } | |
258 | ||
259 | is_equal = true; | |
260 | end: | |
261 | return is_equal; | |
262 | } | |
263 | ||
264 | /* | |
265 | * On success ret is 0; | |
266 | * | |
267 | * On error ret is negative. | |
268 | * | |
269 | * An event with NO loglevel and the name is * will return NULL. | |
270 | */ | |
271 | static int generate_agent_filter( | |
272 | const struct lttng_event_rule *rule, char **_agent_filter) | |
273 | { | |
274 | int err; | |
275 | int ret = 0; | |
276 | char *agent_filter = NULL; | |
277 | const char *pattern; | |
278 | const char *filter; | |
c3e68e71 | 279 | const struct lttng_log_level_rule *log_level_rule = NULL; |
6d420eff JR |
280 | enum lttng_event_rule_status status; |
281 | ||
282 | assert(rule); | |
283 | assert(_agent_filter); | |
284 | ||
285 | status = lttng_event_rule_tracepoint_get_pattern(rule, &pattern); | |
286 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
287 | ret = -1; | |
288 | goto end; | |
289 | } | |
290 | ||
291 | status = lttng_event_rule_tracepoint_get_filter(rule, &filter); | |
292 | if (status == LTTNG_EVENT_RULE_STATUS_UNSET) { | |
293 | filter = NULL; | |
294 | } else if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
295 | ret = -1; | |
296 | goto end; | |
297 | } | |
298 | ||
6d420eff JR |
299 | |
300 | /* Don't add filter for the '*' event. */ | |
301 | if (strcmp(pattern, "*") != 0) { | |
302 | if (filter) { | |
303 | err = asprintf(&agent_filter, | |
304 | "(%s) && (logger_name == \"%s\")", | |
305 | filter, pattern); | |
306 | } else { | |
307 | err = asprintf(&agent_filter, "logger_name == \"%s\"", | |
308 | pattern); | |
309 | } | |
310 | ||
311 | if (err < 0) { | |
312 | PERROR("Failed to format agent filter string"); | |
313 | ret = -1; | |
314 | goto end; | |
315 | } | |
316 | } | |
317 | ||
c3e68e71 JR |
318 | status = lttng_event_rule_tracepoint_get_log_level_rule( |
319 | rule, &log_level_rule); | |
320 | if (status == LTTNG_EVENT_RULE_STATUS_OK) { | |
321 | enum lttng_log_level_rule_status llr_status; | |
6d420eff | 322 | const char *op; |
c3e68e71 | 323 | int level; |
6d420eff | 324 | |
c3e68e71 JR |
325 | switch (lttng_log_level_rule_get_type(log_level_rule)) |
326 | { | |
327 | case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: | |
328 | llr_status = lttng_log_level_rule_exactly_get_level( | |
329 | log_level_rule, &level); | |
330 | op = "=="; | |
331 | break; | |
332 | case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: | |
333 | llr_status = lttng_log_level_rule_at_least_as_severe_as_get_level( | |
334 | log_level_rule, &level); | |
335 | op = ">="; | |
336 | break; | |
337 | default: | |
338 | abort(); | |
6d420eff JR |
339 | } |
340 | ||
c3e68e71 JR |
341 | if (llr_status != LTTNG_LOG_LEVEL_RULE_STATUS_OK) { |
342 | ret = -1; | |
343 | goto end; | |
6d420eff JR |
344 | } |
345 | ||
346 | if (filter || agent_filter) { | |
347 | char *new_filter; | |
348 | ||
349 | err = asprintf(&new_filter, | |
350 | "(%s) && (int_loglevel %s %d)", | |
351 | agent_filter ? agent_filter : filter, | |
c3e68e71 | 352 | op, level); |
6d420eff JR |
353 | if (agent_filter) { |
354 | free(agent_filter); | |
355 | } | |
356 | agent_filter = new_filter; | |
357 | } else { | |
358 | err = asprintf(&agent_filter, "int_loglevel %s %d", op, | |
c3e68e71 | 359 | level); |
6d420eff JR |
360 | } |
361 | ||
362 | if (err < 0) { | |
363 | PERROR("Failed to format agent filter string"); | |
364 | ret = -1; | |
365 | goto end; | |
366 | } | |
367 | } | |
368 | ||
369 | *_agent_filter = agent_filter; | |
370 | agent_filter = NULL; | |
371 | ||
372 | end: | |
373 | free(agent_filter); | |
374 | return ret; | |
375 | } | |
376 | ||
377 | static enum lttng_error_code | |
378 | lttng_event_rule_tracepoint_generate_filter_bytecode( | |
58daac01 JR |
379 | struct lttng_event_rule *rule, |
380 | const struct lttng_credentials *creds) | |
6d420eff JR |
381 | { |
382 | int ret; | |
383 | enum lttng_error_code ret_code; | |
384 | struct lttng_event_rule_tracepoint *tracepoint; | |
385 | enum lttng_domain_type domain_type; | |
386 | enum lttng_event_rule_status status; | |
387 | const char *filter; | |
2b00d462 | 388 | struct lttng_bytecode *bytecode = NULL; |
6d420eff JR |
389 | |
390 | assert(rule); | |
391 | ||
392 | tracepoint = container_of( | |
393 | rule, struct lttng_event_rule_tracepoint, parent); | |
394 | ||
395 | status = lttng_event_rule_tracepoint_get_filter(rule, &filter); | |
396 | if (status == LTTNG_EVENT_RULE_STATUS_UNSET) { | |
397 | filter = NULL; | |
398 | } else if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
399 | ret_code = LTTNG_ERR_FILTER_INVAL; | |
400 | goto end; | |
401 | } | |
402 | ||
403 | if (filter && filter[0] == '\0') { | |
404 | ret_code = LTTNG_ERR_FILTER_INVAL; | |
405 | goto error; | |
406 | } | |
407 | ||
408 | status = lttng_event_rule_tracepoint_get_domain_type( | |
409 | rule, &domain_type); | |
410 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
411 | ret_code = LTTNG_ERR_UNK; | |
412 | goto error; | |
413 | } | |
414 | ||
415 | switch (domain_type) { | |
416 | case LTTNG_DOMAIN_LOG4J: | |
417 | case LTTNG_DOMAIN_JUL: | |
418 | case LTTNG_DOMAIN_PYTHON: | |
419 | { | |
420 | char *agent_filter; | |
421 | ||
422 | ret = generate_agent_filter(rule, &agent_filter); | |
423 | if (ret) { | |
424 | ret_code = LTTNG_ERR_FILTER_INVAL; | |
425 | goto error; | |
426 | } | |
427 | ||
428 | tracepoint->internal_filter.filter = agent_filter; | |
429 | break; | |
430 | } | |
431 | default: | |
432 | { | |
433 | if (filter) { | |
434 | tracepoint->internal_filter.filter = strdup(filter); | |
435 | if (tracepoint->internal_filter.filter == NULL) { | |
436 | ret_code = LTTNG_ERR_NOMEM; | |
437 | goto error; | |
438 | } | |
439 | } else { | |
440 | tracepoint->internal_filter.filter = NULL; | |
441 | } | |
442 | break; | |
443 | } | |
444 | } | |
445 | ||
446 | if (tracepoint->internal_filter.filter == NULL) { | |
447 | ret_code = LTTNG_OK; | |
448 | goto end; | |
449 | } | |
450 | ||
451 | ret = run_as_generate_filter_bytecode( | |
58daac01 | 452 | tracepoint->internal_filter.filter, creds, |
6d420eff JR |
453 | &bytecode); |
454 | if (ret) { | |
455 | ret_code = LTTNG_ERR_FILTER_INVAL; | |
456 | goto end; | |
457 | } | |
458 | ||
459 | tracepoint->internal_filter.bytecode = bytecode; | |
460 | bytecode = NULL; | |
461 | ret_code = LTTNG_OK; | |
462 | ||
463 | error: | |
464 | end: | |
465 | free(bytecode); | |
466 | return ret_code; | |
467 | } | |
468 | ||
469 | static const char *lttng_event_rule_tracepoint_get_internal_filter( | |
470 | const struct lttng_event_rule *rule) | |
471 | { | |
472 | struct lttng_event_rule_tracepoint *tracepoint; | |
473 | ||
474 | assert(rule); | |
475 | tracepoint = container_of( | |
476 | rule, struct lttng_event_rule_tracepoint, parent); | |
477 | return tracepoint->internal_filter.filter; | |
478 | } | |
479 | ||
2b00d462 | 480 | static const struct lttng_bytecode * |
6d420eff JR |
481 | lttng_event_rule_tracepoint_get_internal_filter_bytecode( |
482 | const struct lttng_event_rule *rule) | |
483 | { | |
484 | struct lttng_event_rule_tracepoint *tracepoint; | |
485 | ||
486 | assert(rule); | |
487 | tracepoint = container_of( | |
488 | rule, struct lttng_event_rule_tracepoint, parent); | |
489 | return tracepoint->internal_filter.bytecode; | |
490 | } | |
491 | ||
993578ff | 492 | static enum lttng_event_rule_generate_exclusions_status |
6d420eff | 493 | lttng_event_rule_tracepoint_generate_exclusions( |
993578ff JR |
494 | const struct lttng_event_rule *rule, |
495 | struct lttng_event_exclusion **_exclusions) | |
6d420eff | 496 | { |
993578ff JR |
497 | unsigned int nb_exclusions = 0, i; |
498 | enum lttng_domain_type domain_type; | |
499 | struct lttng_event_exclusion *exclusions; | |
500 | enum lttng_event_rule_status event_rule_status; | |
501 | enum lttng_event_rule_generate_exclusions_status ret_status; | |
6d420eff | 502 | |
993578ff JR |
503 | assert(_exclusions); |
504 | ||
505 | event_rule_status = lttng_event_rule_tracepoint_get_domain_type( | |
506 | rule, &domain_type); | |
507 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK); | |
6d420eff JR |
508 | |
509 | switch (domain_type) { | |
510 | case LTTNG_DOMAIN_KERNEL: | |
511 | case LTTNG_DOMAIN_JUL: | |
512 | case LTTNG_DOMAIN_LOG4J: | |
513 | case LTTNG_DOMAIN_PYTHON: | |
514 | /* Not supported. */ | |
993578ff JR |
515 | exclusions = NULL; |
516 | ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_NONE; | |
6d420eff JR |
517 | goto end; |
518 | case LTTNG_DOMAIN_UST: | |
519 | /* Exclusions supported. */ | |
520 | break; | |
521 | default: | |
993578ff | 522 | /* Unknown domain. */ |
6d420eff JR |
523 | abort(); |
524 | } | |
525 | ||
993578ff | 526 | event_rule_status = lttng_event_rule_tracepoint_get_exclusions_count( |
6d420eff | 527 | rule, &nb_exclusions); |
993578ff | 528 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK); |
6d420eff JR |
529 | if (nb_exclusions == 0) { |
530 | /* Nothing to do. */ | |
993578ff JR |
531 | exclusions = NULL; |
532 | ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_NONE; | |
6d420eff JR |
533 | goto end; |
534 | } | |
535 | ||
993578ff JR |
536 | exclusions = zmalloc(sizeof(struct lttng_event_exclusion) + |
537 | (LTTNG_SYMBOL_NAME_LEN * nb_exclusions)); | |
538 | if (!exclusions) { | |
6d420eff | 539 | PERROR("Failed to allocate exclusions buffer"); |
993578ff | 540 | ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_OUT_OF_MEMORY; |
6d420eff JR |
541 | goto end; |
542 | } | |
543 | ||
993578ff | 544 | exclusions->count = nb_exclusions; |
6d420eff | 545 | for (i = 0; i < nb_exclusions; i++) { |
993578ff JR |
546 | int copy_ret; |
547 | const char *exclusion_str; | |
548 | ||
549 | event_rule_status = | |
550 | lttng_event_rule_tracepoint_get_exclusion_at_index( | |
551 | rule, i, &exclusion_str); | |
552 | assert(event_rule_status == LTTNG_EVENT_RULE_STATUS_OK); | |
553 | ||
554 | copy_ret = lttng_strncpy(exclusions->names[i], exclusion_str, | |
555 | LTTNG_SYMBOL_NAME_LEN); | |
556 | if (copy_ret) { | |
557 | free(exclusions); | |
558 | exclusions = NULL; | |
559 | ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_ERROR; | |
560 | goto end; | |
561 | } | |
6d420eff JR |
562 | } |
563 | ||
993578ff JR |
564 | ret_status = LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_OK; |
565 | ||
6d420eff | 566 | end: |
993578ff JR |
567 | *_exclusions = exclusions; |
568 | return ret_status; | |
6d420eff JR |
569 | } |
570 | ||
571 | static void destroy_lttng_exclusions_element(void *ptr) | |
572 | { | |
573 | free(ptr); | |
574 | } | |
575 | ||
959e3c66 JR |
576 | static unsigned long lttng_event_rule_tracepoint_hash( |
577 | const struct lttng_event_rule *rule) | |
578 | { | |
579 | unsigned long hash; | |
580 | unsigned int i, exclusion_count; | |
581 | enum lttng_event_rule_status status; | |
582 | struct lttng_event_rule_tracepoint *tp_rule = | |
583 | container_of(rule, typeof(*tp_rule), parent); | |
584 | ||
585 | hash = hash_key_ulong((void *) LTTNG_EVENT_RULE_TYPE_TRACEPOINT, | |
586 | lttng_ht_seed); | |
587 | hash ^= hash_key_ulong((void *) tp_rule->domain, lttng_ht_seed); | |
588 | hash ^= hash_key_str(tp_rule->pattern, lttng_ht_seed); | |
589 | ||
590 | if (tp_rule->filter_expression) { | |
591 | hash ^= hash_key_str(tp_rule->filter_expression, lttng_ht_seed); | |
592 | } | |
593 | ||
c3e68e71 JR |
594 | if (tp_rule->log_level_rule) { |
595 | hash ^= lttng_log_level_rule_hash(tp_rule->log_level_rule); | |
959e3c66 JR |
596 | } |
597 | ||
598 | status = lttng_event_rule_tracepoint_get_exclusions_count(rule, | |
599 | &exclusion_count); | |
600 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
601 | ||
602 | for (i = 0; i < exclusion_count; i++) { | |
603 | const char *exclusion; | |
604 | ||
605 | status = lttng_event_rule_tracepoint_get_exclusion_at_index( | |
606 | rule, i, &exclusion); | |
607 | assert(status == LTTNG_EVENT_RULE_STATUS_OK); | |
608 | hash ^= hash_key_str(exclusion, lttng_ht_seed); | |
609 | } | |
610 | ||
611 | return hash; | |
612 | } | |
613 | ||
44760c20 JR |
614 | static struct lttng_event *lttng_event_rule_tracepoint_generate_lttng_event( |
615 | const struct lttng_event_rule *rule) | |
616 | { | |
617 | int ret; | |
618 | const struct lttng_event_rule_tracepoint *tracepoint; | |
619 | struct lttng_event *local_event = NULL; | |
620 | struct lttng_event *event = NULL; | |
c3e68e71 JR |
621 | enum lttng_loglevel_type loglevel_type; |
622 | int loglevel_value = 0; | |
623 | enum lttng_event_rule_status status; | |
624 | const struct lttng_log_level_rule *log_level_rule; | |
44760c20 JR |
625 | |
626 | tracepoint = container_of( | |
627 | rule, const struct lttng_event_rule_tracepoint, parent); | |
628 | ||
629 | local_event = zmalloc(sizeof(*local_event)); | |
630 | if (!local_event) { | |
631 | goto error; | |
632 | } | |
633 | ||
634 | local_event->type = LTTNG_EVENT_TRACEPOINT; | |
635 | ret = lttng_strncpy(local_event->name, tracepoint->pattern, | |
636 | sizeof(local_event->name)); | |
637 | if (ret) { | |
638 | ERR("Truncation occurred when copying event rule pattern to `lttng_event` structure: pattern = '%s'", | |
639 | tracepoint->pattern); | |
640 | goto error; | |
641 | } | |
642 | ||
c3e68e71 JR |
643 | |
644 | /* Map the log level rule to an equivalent lttng_loglevel */ | |
645 | status = lttng_event_rule_tracepoint_get_log_level_rule(rule, &log_level_rule); | |
646 | if (status == LTTNG_EVENT_RULE_STATUS_UNSET) { | |
647 | loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; | |
648 | loglevel_value = 0; | |
649 | } else if (status == LTTNG_EVENT_RULE_STATUS_OK) { | |
650 | enum lttng_log_level_rule_status llr_status; | |
651 | ||
652 | switch (lttng_log_level_rule_get_type(log_level_rule)) { | |
653 | case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: | |
654 | llr_status = lttng_log_level_rule_exactly_get_level( | |
655 | log_level_rule, &loglevel_value); | |
656 | loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
657 | break; | |
658 | case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: | |
659 | llr_status = lttng_log_level_rule_at_least_as_severe_as_get_level( | |
660 | log_level_rule, &loglevel_value); | |
661 | loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; | |
662 | break; | |
663 | default: | |
664 | abort(); | |
665 | break; | |
666 | } | |
667 | ||
668 | if (llr_status != LTTNG_LOG_LEVEL_RULE_STATUS_OK) { | |
669 | goto error; | |
670 | } | |
671 | } else { | |
672 | goto error; | |
673 | } | |
674 | ||
675 | local_event->loglevel_type = loglevel_type; | |
676 | local_event->loglevel = loglevel_value; | |
44760c20 JR |
677 | |
678 | event = local_event; | |
679 | local_event = NULL; | |
680 | error: | |
681 | free(local_event); | |
682 | return event; | |
683 | } | |
684 | ||
6d420eff JR |
685 | struct lttng_event_rule *lttng_event_rule_tracepoint_create( |
686 | enum lttng_domain_type domain_type) | |
687 | { | |
688 | struct lttng_event_rule *rule = NULL; | |
689 | struct lttng_event_rule_tracepoint *tp_rule; | |
c3e68e71 | 690 | enum lttng_event_rule_status status; |
6d420eff JR |
691 | |
692 | if (domain_type == LTTNG_DOMAIN_NONE) { | |
693 | goto end; | |
694 | } | |
695 | ||
696 | tp_rule = zmalloc(sizeof(struct lttng_event_rule_tracepoint)); | |
697 | if (!tp_rule) { | |
698 | goto end; | |
699 | } | |
700 | ||
701 | rule = &tp_rule->parent; | |
702 | lttng_event_rule_init(&tp_rule->parent, LTTNG_EVENT_RULE_TYPE_TRACEPOINT); | |
703 | tp_rule->parent.validate = lttng_event_rule_tracepoint_validate; | |
704 | tp_rule->parent.serialize = lttng_event_rule_tracepoint_serialize; | |
705 | tp_rule->parent.equal = lttng_event_rule_tracepoint_is_equal; | |
706 | tp_rule->parent.destroy = lttng_event_rule_tracepoint_destroy; | |
707 | tp_rule->parent.generate_filter_bytecode = | |
708 | lttng_event_rule_tracepoint_generate_filter_bytecode; | |
709 | tp_rule->parent.get_filter = | |
710 | lttng_event_rule_tracepoint_get_internal_filter; | |
711 | tp_rule->parent.get_filter_bytecode = | |
712 | lttng_event_rule_tracepoint_get_internal_filter_bytecode; | |
713 | tp_rule->parent.generate_exclusions = | |
714 | lttng_event_rule_tracepoint_generate_exclusions; | |
959e3c66 | 715 | tp_rule->parent.hash = lttng_event_rule_tracepoint_hash; |
44760c20 JR |
716 | tp_rule->parent.generate_lttng_event = |
717 | lttng_event_rule_tracepoint_generate_lttng_event; | |
6d420eff JR |
718 | |
719 | tp_rule->domain = domain_type; | |
c3e68e71 | 720 | tp_rule->log_level_rule = NULL; |
6d420eff JR |
721 | |
722 | lttng_dynamic_pointer_array_init(&tp_rule->exclusions, | |
723 | destroy_lttng_exclusions_element); | |
c3e68e71 JR |
724 | |
725 | /* Default pattern is '*' */ | |
726 | status = lttng_event_rule_tracepoint_set_pattern(rule, "*"); | |
727 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
728 | lttng_event_rule_destroy(rule); | |
729 | rule = NULL; | |
730 | } | |
731 | ||
6d420eff JR |
732 | end: |
733 | return rule; | |
734 | } | |
735 | ||
736 | LTTNG_HIDDEN | |
737 | ssize_t lttng_event_rule_tracepoint_create_from_payload( | |
738 | struct lttng_payload_view *view, | |
739 | struct lttng_event_rule **_event_rule) | |
740 | { | |
741 | ssize_t ret, offset = 0; | |
742 | int i; | |
743 | enum lttng_event_rule_status status; | |
744 | enum lttng_domain_type domain_type; | |
6d420eff JR |
745 | const struct lttng_event_rule_tracepoint_comm *tracepoint_comm; |
746 | const char *pattern; | |
747 | const char *filter_expression = NULL; | |
748 | const char **exclusions = NULL; | |
749 | const uint32_t *exclusion_len; | |
750 | const char *exclusion; | |
751 | struct lttng_buffer_view current_buffer_view; | |
752 | struct lttng_event_rule *rule = NULL; | |
c3e68e71 | 753 | struct lttng_log_level_rule *log_level_rule = NULL; |
6d420eff JR |
754 | |
755 | if (!_event_rule) { | |
756 | ret = -1; | |
757 | goto end; | |
758 | } | |
759 | ||
3e6e0df2 JG |
760 | current_buffer_view = lttng_buffer_view_from_view( |
761 | &view->buffer, offset, sizeof(*tracepoint_comm)); | |
762 | if (!lttng_buffer_view_is_valid(¤t_buffer_view)) { | |
6d420eff JR |
763 | ERR("Failed to initialize from malformed event rule tracepoint: buffer too short to contain header."); |
764 | ret = -1; | |
765 | goto end; | |
766 | } | |
767 | ||
6d420eff JR |
768 | tracepoint_comm = (typeof(tracepoint_comm)) current_buffer_view.data; |
769 | ||
6d420eff JR |
770 | if (tracepoint_comm->domain_type <= LTTNG_DOMAIN_NONE || |
771 | tracepoint_comm->domain_type > LTTNG_DOMAIN_PYTHON) { | |
772 | /* Invalid domain value. */ | |
773 | ERR("Invalid domain type value (%i) found in tracepoint_comm buffer.", | |
774 | (int) tracepoint_comm->domain_type); | |
775 | ret = -1; | |
776 | goto end; | |
777 | } | |
778 | ||
779 | domain_type = (enum lttng_domain_type) tracepoint_comm->domain_type; | |
780 | rule = lttng_event_rule_tracepoint_create(domain_type); | |
781 | if (!rule) { | |
782 | ERR("Failed to create event rule tracepoint."); | |
783 | ret = -1; | |
784 | goto end; | |
785 | } | |
786 | ||
6d420eff JR |
787 | /* Skip to payload. */ |
788 | offset += current_buffer_view.size; | |
789 | ||
790 | /* Map the pattern. */ | |
791 | current_buffer_view = lttng_buffer_view_from_view( | |
792 | &view->buffer, offset, tracepoint_comm->pattern_len); | |
3e6e0df2 JG |
793 | |
794 | if (!lttng_buffer_view_is_valid(¤t_buffer_view)) { | |
6d420eff JR |
795 | ret = -1; |
796 | goto end; | |
797 | } | |
798 | ||
3e6e0df2 | 799 | pattern = current_buffer_view.data; |
6d420eff JR |
800 | if (!lttng_buffer_view_contains_string(¤t_buffer_view, pattern, |
801 | tracepoint_comm->pattern_len)) { | |
802 | ret = -1; | |
803 | goto end; | |
804 | } | |
805 | ||
806 | /* Skip after the pattern. */ | |
807 | offset += tracepoint_comm->pattern_len; | |
808 | ||
809 | if (!tracepoint_comm->filter_expression_len) { | |
810 | goto skip_filter_expression; | |
811 | } | |
812 | ||
813 | /* Map the filter_expression. */ | |
814 | current_buffer_view = lttng_buffer_view_from_view(&view->buffer, offset, | |
815 | tracepoint_comm->filter_expression_len); | |
3e6e0df2 | 816 | if (!lttng_buffer_view_is_valid(¤t_buffer_view)) { |
6d420eff JR |
817 | ret = -1; |
818 | goto end; | |
819 | } | |
820 | ||
3e6e0df2 | 821 | filter_expression = current_buffer_view.data; |
6d420eff JR |
822 | if (!lttng_buffer_view_contains_string(¤t_buffer_view, |
823 | filter_expression, | |
824 | tracepoint_comm->filter_expression_len)) { | |
825 | ret = -1; | |
826 | goto end; | |
827 | } | |
828 | ||
829 | /* Skip after the pattern. */ | |
830 | offset += tracepoint_comm->filter_expression_len; | |
831 | ||
832 | skip_filter_expression: | |
c3e68e71 JR |
833 | if (!tracepoint_comm->log_level_rule_len) { |
834 | goto skip_log_level_rule; | |
835 | } | |
836 | ||
837 | { | |
838 | /* Map the log level rule. */ | |
839 | struct lttng_payload_view current_payload_view = | |
840 | lttng_payload_view_from_view(view, offset, | |
841 | tracepoint_comm->log_level_rule_len); | |
842 | ret = lttng_log_level_rule_create_from_payload( | |
843 | ¤t_payload_view, &log_level_rule); | |
844 | if (ret < 0) { | |
845 | ret = -1; | |
846 | goto end; | |
847 | } | |
848 | ||
849 | assert(ret == tracepoint_comm->log_level_rule_len); | |
850 | } | |
851 | ||
852 | /* Skip after the log level rule. */ | |
853 | offset += tracepoint_comm->log_level_rule_len; | |
854 | ||
855 | skip_log_level_rule: | |
6d420eff JR |
856 | for (i = 0; i < tracepoint_comm->exclusions_count; i++) { |
857 | current_buffer_view = lttng_buffer_view_from_view( | |
858 | &view->buffer, offset, sizeof(*exclusion_len)); | |
3e6e0df2 | 859 | if (!lttng_buffer_view_is_valid(¤t_buffer_view)) { |
6d420eff JR |
860 | ret = -1; |
861 | goto end; | |
862 | } | |
863 | ||
3e6e0df2 | 864 | exclusion_len = (typeof(exclusion_len)) current_buffer_view.data; |
6d420eff | 865 | offset += sizeof(*exclusion_len); |
3e6e0df2 | 866 | |
6d420eff JR |
867 | current_buffer_view = lttng_buffer_view_from_view( |
868 | &view->buffer, offset, *exclusion_len); | |
3e6e0df2 JG |
869 | if (!lttng_buffer_view_is_valid(¤t_buffer_view)) { |
870 | ret = -1; | |
871 | goto end; | |
872 | } | |
873 | ||
6d420eff JR |
874 | exclusion = current_buffer_view.data; |
875 | if (!lttng_buffer_view_contains_string(¤t_buffer_view, | |
876 | exclusion, *exclusion_len)) { | |
877 | ret = -1; | |
878 | goto end; | |
879 | } | |
880 | ||
881 | status = lttng_event_rule_tracepoint_add_exclusion(rule, exclusion); | |
882 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
883 | ERR("Failed to add event rule tracepoint exclusion \"%s\".", | |
884 | exclusion); | |
885 | ret = -1; | |
886 | goto end; | |
887 | } | |
888 | ||
889 | /* Skip to next exclusion. */ | |
890 | offset += *exclusion_len; | |
891 | } | |
892 | ||
893 | status = lttng_event_rule_tracepoint_set_pattern(rule, pattern); | |
894 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
895 | ERR("Failed to set event rule tracepoint pattern."); | |
896 | ret = -1; | |
897 | goto end; | |
898 | } | |
899 | ||
900 | if (filter_expression) { | |
901 | status = lttng_event_rule_tracepoint_set_filter( | |
902 | rule, filter_expression); | |
903 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
904 | ERR("Failed to set event rule tracepoint pattern."); | |
905 | ret = -1; | |
906 | goto end; | |
907 | } | |
908 | } | |
909 | ||
c3e68e71 JR |
910 | if (log_level_rule) { |
911 | status = lttng_event_rule_tracepoint_set_log_level_rule( | |
912 | rule, log_level_rule); | |
913 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
914 | ERR("Failed to set event rule tracepoint log level rule."); | |
915 | ret = -1; | |
916 | goto end; | |
917 | } | |
918 | } | |
919 | ||
6d420eff JR |
920 | *_event_rule = rule; |
921 | rule = NULL; | |
922 | ret = offset; | |
923 | end: | |
924 | free(exclusions); | |
c3e68e71 | 925 | lttng_log_level_rule_destroy(log_level_rule); |
6d420eff JR |
926 | lttng_event_rule_destroy(rule); |
927 | return ret; | |
928 | } | |
929 | ||
930 | enum lttng_event_rule_status lttng_event_rule_tracepoint_set_pattern( | |
931 | struct lttng_event_rule *rule, const char *pattern) | |
932 | { | |
933 | char *pattern_copy = NULL; | |
934 | struct lttng_event_rule_tracepoint *tracepoint; | |
935 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
936 | ||
937 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !pattern || | |
938 | strlen(pattern) == 0) { | |
939 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
940 | goto end; | |
941 | } | |
942 | ||
943 | tracepoint = container_of( | |
944 | rule, struct lttng_event_rule_tracepoint, parent); | |
945 | pattern_copy = strdup(pattern); | |
946 | if (!pattern_copy) { | |
947 | status = LTTNG_EVENT_RULE_STATUS_ERROR; | |
948 | goto end; | |
949 | } | |
950 | ||
951 | free(tracepoint->pattern); | |
952 | ||
953 | tracepoint->pattern = pattern_copy; | |
954 | pattern_copy = NULL; | |
955 | end: | |
956 | return status; | |
957 | } | |
958 | ||
959 | enum lttng_event_rule_status lttng_event_rule_tracepoint_get_pattern( | |
960 | const struct lttng_event_rule *rule, const char **pattern) | |
961 | { | |
962 | struct lttng_event_rule_tracepoint *tracepoint; | |
963 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
964 | ||
965 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !pattern) { | |
966 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
967 | goto end; | |
968 | } | |
969 | ||
970 | tracepoint = container_of( | |
971 | rule, struct lttng_event_rule_tracepoint, parent); | |
972 | if (!tracepoint->pattern) { | |
973 | status = LTTNG_EVENT_RULE_STATUS_UNSET; | |
974 | goto end; | |
975 | } | |
976 | ||
977 | *pattern = tracepoint->pattern; | |
978 | end: | |
979 | return status; | |
980 | } | |
981 | ||
982 | enum lttng_event_rule_status lttng_event_rule_tracepoint_get_domain_type( | |
983 | const struct lttng_event_rule *rule, | |
984 | enum lttng_domain_type *type) | |
985 | { | |
986 | struct lttng_event_rule_tracepoint *tracepoint; | |
987 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
988 | ||
989 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !type) { | |
990 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
991 | goto end; | |
992 | } | |
993 | ||
994 | tracepoint = container_of( | |
995 | rule, struct lttng_event_rule_tracepoint, parent); | |
996 | *type = tracepoint->domain; | |
997 | end: | |
998 | return status; | |
999 | } | |
1000 | ||
1001 | enum lttng_event_rule_status lttng_event_rule_tracepoint_set_filter( | |
1002 | struct lttng_event_rule *rule, const char *expression) | |
1003 | { | |
1004 | char *expression_copy = NULL; | |
1005 | struct lttng_event_rule_tracepoint *tracepoint; | |
1006 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
1007 | ||
1008 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !expression || | |
1009 | strlen(expression) == 0) { | |
1010 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
1011 | goto end; | |
1012 | } | |
1013 | ||
1014 | tracepoint = container_of( | |
1015 | rule, struct lttng_event_rule_tracepoint, parent); | |
1016 | expression_copy = strdup(expression); | |
1017 | if (!expression_copy) { | |
1018 | PERROR("Failed to copy filter expression"); | |
1019 | status = LTTNG_EVENT_RULE_STATUS_ERROR; | |
1020 | goto end; | |
1021 | } | |
1022 | ||
1023 | if (tracepoint->filter_expression) { | |
1024 | free(tracepoint->filter_expression); | |
1025 | } | |
1026 | ||
1027 | tracepoint->filter_expression = expression_copy; | |
1028 | expression_copy = NULL; | |
1029 | end: | |
1030 | return status; | |
1031 | } | |
1032 | ||
1033 | enum lttng_event_rule_status lttng_event_rule_tracepoint_get_filter( | |
1034 | const struct lttng_event_rule *rule, const char **expression) | |
1035 | { | |
1036 | struct lttng_event_rule_tracepoint *tracepoint; | |
1037 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
1038 | ||
1039 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !expression) { | |
1040 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
1041 | goto end; | |
1042 | } | |
1043 | ||
1044 | tracepoint = container_of( | |
1045 | rule, struct lttng_event_rule_tracepoint, parent); | |
1046 | if (!tracepoint->filter_expression) { | |
1047 | status = LTTNG_EVENT_RULE_STATUS_UNSET; | |
1048 | goto end; | |
1049 | } | |
1050 | ||
1051 | *expression = tracepoint->filter_expression; | |
1052 | end: | |
1053 | return status; | |
1054 | } | |
1055 | ||
c3e68e71 JR |
1056 | static bool log_level_rule_valid( |
1057 | const struct lttng_log_level_rule *rule , enum lttng_domain_type domain) | |
6d420eff JR |
1058 | { |
1059 | bool valid = false; | |
c3e68e71 JR |
1060 | enum lttng_log_level_rule_status status; |
1061 | int level; | |
1062 | ||
1063 | switch(lttng_log_level_rule_get_type(rule)) { | |
1064 | case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: | |
1065 | status = lttng_log_level_rule_exactly_get_level(rule, &level); | |
1066 | break; | |
1067 | case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: | |
1068 | status = lttng_log_level_rule_at_least_as_severe_as_get_level(rule, &level); | |
1069 | break; | |
1070 | default: | |
1071 | abort(); | |
1072 | } | |
1073 | ||
1074 | assert(status == LTTNG_LOG_LEVEL_RULE_STATUS_OK); | |
6d420eff JR |
1075 | |
1076 | switch (domain) { | |
1077 | case LTTNG_DOMAIN_KERNEL: | |
1078 | case LTTNG_DOMAIN_UST: | |
1079 | if (level < LTTNG_LOGLEVEL_EMERG) { | |
1080 | /* Invalid. */ | |
1081 | goto end; | |
1082 | } | |
1083 | if (level > LTTNG_LOGLEVEL_DEBUG) { | |
1084 | /* Invalid. */ | |
1085 | goto end; | |
1086 | } | |
1087 | ||
1088 | valid = true; | |
1089 | break; | |
1090 | case LTTNG_DOMAIN_JUL: | |
1091 | case LTTNG_DOMAIN_LOG4J: | |
1092 | case LTTNG_DOMAIN_PYTHON: | |
1093 | /* | |
1094 | * For both JUL and LOG4J custom log level are possible and can | |
1095 | * spawn the entire int32 range. | |
1096 | * For python, custom log level are possible, it is not clear if | |
1097 | * negative value are accepted (NOTSET == 0) but the source code | |
1098 | * validate against the int type implying that negative values | |
1099 | * are accepted. | |
1100 | */ | |
1101 | valid = true; | |
1102 | goto end; | |
1103 | ||
1104 | case LTTNG_DOMAIN_NONE: | |
1105 | default: | |
1106 | abort(); | |
1107 | } | |
1108 | ||
1109 | end: | |
1110 | return valid; | |
1111 | } | |
1112 | ||
c3e68e71 JR |
1113 | enum lttng_event_rule_status lttng_event_rule_tracepoint_set_log_level_rule( |
1114 | struct lttng_event_rule *rule, | |
1115 | const struct lttng_log_level_rule *log_level_rule) | |
6d420eff JR |
1116 | { |
1117 | struct lttng_event_rule_tracepoint *tracepoint; | |
1118 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
c3e68e71 | 1119 | struct lttng_log_level_rule *copy = NULL; |
6d420eff JR |
1120 | |
1121 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule)) { | |
1122 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
1123 | goto end; | |
1124 | } | |
1125 | ||
1126 | tracepoint = container_of( | |
1127 | rule, struct lttng_event_rule_tracepoint, parent); | |
1128 | ||
c3e68e71 | 1129 | if (!log_level_rule_valid(log_level_rule, tracepoint->domain)) { |
6d420eff JR |
1130 | status = LTTNG_EVENT_RULE_STATUS_INVALID; |
1131 | goto end; | |
1132 | } | |
1133 | ||
c3e68e71 JR |
1134 | copy = lttng_log_level_rule_copy(log_level_rule); |
1135 | if (copy == NULL) { | |
1136 | status = LTTNG_EVENT_RULE_STATUS_ERROR; | |
6d420eff JR |
1137 | goto end; |
1138 | } | |
1139 | ||
c3e68e71 JR |
1140 | if (tracepoint->log_level_rule) { |
1141 | lttng_log_level_rule_destroy(tracepoint->log_level_rule); | |
6d420eff JR |
1142 | } |
1143 | ||
c3e68e71 | 1144 | tracepoint->log_level_rule = copy; |
6d420eff | 1145 | |
6d420eff JR |
1146 | end: |
1147 | return status; | |
1148 | } | |
1149 | ||
c3e68e71 | 1150 | enum lttng_event_rule_status lttng_event_rule_tracepoint_get_log_level_rule( |
6d420eff | 1151 | const struct lttng_event_rule *rule, |
c3e68e71 JR |
1152 | const struct lttng_log_level_rule **log_level_rule |
1153 | ) | |
6d420eff JR |
1154 | { |
1155 | struct lttng_event_rule_tracepoint *tracepoint; | |
1156 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
1157 | ||
c3e68e71 | 1158 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !log_level_rule) { |
6d420eff JR |
1159 | status = LTTNG_EVENT_RULE_STATUS_INVALID; |
1160 | goto end; | |
1161 | } | |
1162 | ||
1163 | tracepoint = container_of( | |
1164 | rule, struct lttng_event_rule_tracepoint, parent); | |
c3e68e71 | 1165 | if (tracepoint->log_level_rule == NULL) { |
6d420eff JR |
1166 | status = LTTNG_EVENT_RULE_STATUS_UNSET; |
1167 | goto end; | |
1168 | } | |
1169 | ||
c3e68e71 | 1170 | *log_level_rule = tracepoint->log_level_rule; |
6d420eff JR |
1171 | end: |
1172 | return status; | |
1173 | } | |
1174 | ||
1175 | enum lttng_event_rule_status lttng_event_rule_tracepoint_add_exclusion( | |
1176 | struct lttng_event_rule *rule, | |
1177 | const char *exclusion) | |
1178 | { | |
1179 | int ret; | |
1180 | char *exclusion_copy = NULL; | |
1181 | struct lttng_event_rule_tracepoint *tracepoint; | |
1182 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
1183 | enum lttng_domain_type domain_type; | |
1184 | ||
1185 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || | |
1186 | !exclusion) { | |
1187 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
1188 | goto end; | |
1189 | } | |
1190 | ||
1191 | tracepoint = container_of( | |
1192 | rule, struct lttng_event_rule_tracepoint, parent); | |
1193 | ||
1194 | status = lttng_event_rule_tracepoint_get_domain_type( | |
1195 | rule, &domain_type); | |
1196 | if (status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1197 | goto end; | |
1198 | } | |
1199 | ||
1200 | switch (domain_type) { | |
1201 | case LTTNG_DOMAIN_KERNEL: | |
1202 | case LTTNG_DOMAIN_JUL: | |
1203 | case LTTNG_DOMAIN_LOG4J: | |
1204 | case LTTNG_DOMAIN_PYTHON: | |
1205 | status = LTTNG_EVENT_RULE_STATUS_UNSUPPORTED; | |
1206 | goto end; | |
1207 | case LTTNG_DOMAIN_UST: | |
1208 | /* Exclusions supported. */ | |
1209 | break; | |
1210 | default: | |
1211 | abort(); | |
1212 | } | |
1213 | ||
1214 | if (strlen(exclusion) >= LTTNG_SYMBOL_NAME_LEN) { | |
1215 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
1216 | goto end; | |
1217 | } | |
1218 | ||
1219 | exclusion_copy = strdup(exclusion); | |
1220 | if (!exclusion_copy) { | |
1221 | status = LTTNG_EVENT_RULE_STATUS_ERROR; | |
1222 | goto end; | |
1223 | } | |
1224 | ||
1225 | ret = lttng_dynamic_pointer_array_add_pointer(&tracepoint->exclusions, | |
1226 | exclusion_copy); | |
1227 | if (ret < 0) { | |
1228 | status = LTTNG_EVENT_RULE_STATUS_ERROR; | |
1229 | goto end; | |
1230 | } | |
1231 | ||
1232 | exclusion_copy = NULL; | |
1233 | end: | |
1234 | free(exclusion_copy); | |
1235 | return status; | |
1236 | } | |
1237 | ||
1238 | enum lttng_event_rule_status lttng_event_rule_tracepoint_get_exclusions_count( | |
1239 | const struct lttng_event_rule *rule, unsigned int *count) | |
1240 | { | |
1241 | struct lttng_event_rule_tracepoint *tracepoint; | |
1242 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
1243 | ||
1244 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !count) { | |
1245 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
1246 | goto end; | |
1247 | } | |
1248 | ||
1249 | tracepoint = container_of( | |
1250 | rule, struct lttng_event_rule_tracepoint, parent); | |
1251 | *count = lttng_dynamic_pointer_array_get_count(&tracepoint->exclusions); | |
1252 | end: | |
1253 | return status; | |
1254 | } | |
1255 | ||
1256 | enum lttng_event_rule_status lttng_event_rule_tracepoint_get_exclusion_at_index( | |
1257 | const struct lttng_event_rule *rule, | |
1258 | unsigned int index, | |
1259 | const char **exclusion) | |
1260 | { | |
1261 | unsigned int count; | |
1262 | struct lttng_event_rule_tracepoint *tracepoint; | |
1263 | enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; | |
1264 | ||
1265 | if (!rule || !IS_TRACEPOINT_EVENT_RULE(rule) || !exclusion) { | |
1266 | status = LTTNG_EVENT_RULE_STATUS_INVALID; | |
1267 | goto end; | |
1268 | } | |
1269 | ||
1270 | tracepoint = container_of( | |
1271 | rule, struct lttng_event_rule_tracepoint, parent); | |
1272 | if (lttng_event_rule_tracepoint_get_exclusions_count(rule, &count) != | |
1273 | LTTNG_EVENT_RULE_STATUS_OK) { | |
1274 | goto end; | |
1275 | } | |
1276 | ||
1277 | if (index >= count) { | |
1278 | goto end; | |
1279 | } | |
1280 | ||
1281 | *exclusion = lttng_dynamic_pointer_array_get_pointer( | |
1282 | &tracepoint->exclusions, index); | |
1283 | end: | |
1284 | return status; | |
1285 | } |