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5024c2ac JR |
1 | #include <stdio.h> |
2 | ||
3 | #include "../command.h" | |
4 | #include "../uprobe.h" | |
5 | ||
6 | #include "common/argpar/argpar.h" | |
7 | #include "common/dynamic-array.h" | |
8 | #include "common/string-utils/string-utils.h" | |
9 | #include "common/utils.h" | |
10 | #include "lttng/condition/event-rule.h" | |
11 | #include "lttng/event-internal.h" | |
12 | #include "lttng/event-expr.h" | |
13 | #include <lttng/event-rule/event-rule-internal.h> | |
14 | #include "lttng/event-rule/kprobe.h" | |
15 | #include "lttng/event-rule/syscall.h" | |
16 | #include <lttng/event-rule/tracepoint.h> | |
17 | #include "lttng/event-rule/uprobe.h" | |
18 | #include "common/filter/filter-ast.h" | |
19 | #include "common/filter/filter-ir.h" | |
20 | #include "common/dynamic-array.h" | |
21 | ||
22 | #ifdef LTTNG_EMBED_HELP | |
23 | static const char help_msg[] = | |
24 | #include <lttng-add-trigger.1.h> | |
25 | ; | |
26 | #endif | |
27 | ||
28 | enum { | |
29 | OPT_HELP, | |
30 | OPT_LIST_OPTIONS, | |
31 | ||
32 | OPT_CONDITION, | |
33 | OPT_ACTION, | |
34 | OPT_ID, | |
35 | OPT_FIRE_ONCE_AFTER, | |
36 | OPT_FIRE_EVERY, | |
37 | ||
38 | OPT_ALL, | |
39 | OPT_FILTER, | |
40 | OPT_EXCLUDE, | |
41 | OPT_LOGLEVEL, | |
42 | OPT_LOGLEVEL_ONLY, | |
43 | ||
44 | OPT_USERSPACE, | |
45 | OPT_KERNEL, | |
46 | OPT_LOG4J, | |
47 | OPT_JUL, | |
48 | OPT_PYTHON, | |
49 | ||
50 | OPT_FUNCTION, | |
51 | OPT_PROBE, | |
52 | OPT_USERSPACE_PROBE, | |
53 | OPT_SYSCALL, | |
54 | OPT_TRACEPOINT, | |
55 | ||
56 | OPT_NAME, | |
57 | OPT_MAX_SIZE, | |
58 | OPT_DATA_URL, | |
59 | OPT_CTRL_URL, | |
60 | ||
61 | OPT_CAPTURE, | |
62 | }; | |
63 | ||
64 | static const struct argpar_opt_descr event_rule_opt_descrs[] = { | |
65 | { OPT_ALL, 'a', "all", false }, | |
66 | { OPT_FILTER, 'f', "filter", true }, | |
67 | { OPT_EXCLUDE, 'x', "exclude", true }, | |
68 | { OPT_LOGLEVEL, '\0', "loglevel", true }, | |
69 | { OPT_LOGLEVEL_ONLY, '\0', "loglevel-only", true }, | |
70 | ||
71 | /* Domains */ | |
72 | { OPT_USERSPACE, 'u', "userspace", false }, | |
73 | { OPT_KERNEL, 'k', "kernel", false }, | |
74 | { OPT_LOG4J, 'l', "log4j", false }, | |
75 | { OPT_JUL, 'j', "jul", false }, | |
76 | { OPT_PYTHON, 'p', "python", false }, | |
77 | ||
78 | /* Event rule types */ | |
79 | { OPT_FUNCTION, '\0', "function", true }, | |
80 | { OPT_PROBE, '\0', "probe", true }, | |
81 | { OPT_USERSPACE_PROBE, '\0', "userspace-probe", true }, | |
82 | { OPT_SYSCALL, '\0', "syscall" }, | |
83 | { OPT_TRACEPOINT, '\0', "tracepoint" }, | |
84 | ||
85 | /* Capture descriptor */ | |
86 | { OPT_CAPTURE, '\0', "capture", true }, | |
87 | ||
88 | ARGPAR_OPT_DESCR_SENTINEL | |
89 | }; | |
90 | ||
91 | static | |
92 | bool assign_domain_type(enum lttng_domain_type *dest, | |
93 | enum lttng_domain_type src) | |
94 | { | |
95 | bool ret; | |
96 | ||
97 | if (*dest == LTTNG_DOMAIN_NONE || *dest == src) { | |
98 | *dest = src; | |
99 | ret = true; | |
100 | } else { | |
101 | ERR("Multiple domains specified."); | |
102 | ret = false; | |
103 | } | |
104 | ||
105 | return ret; | |
106 | } | |
107 | ||
108 | static | |
109 | bool assign_event_rule_type(enum lttng_event_rule_type *dest, | |
110 | enum lttng_event_rule_type src) | |
111 | { | |
112 | bool ret; | |
113 | ||
114 | if (*dest == LTTNG_EVENT_RULE_TYPE_UNKNOWN || *dest == src) { | |
115 | *dest = src; | |
116 | ret = true; | |
117 | } else { | |
118 | ERR("Multiple event type not supported."); | |
119 | ret = false; | |
120 | } | |
121 | ||
122 | return ret; | |
123 | } | |
124 | ||
125 | static | |
126 | bool assign_string(char **dest, const char *src, const char *opt_name) | |
127 | { | |
128 | bool ret; | |
129 | ||
130 | if (*dest) { | |
131 | ERR( | |
132 | "Duplicate %s given.", opt_name); | |
133 | goto error; | |
134 | } | |
135 | ||
136 | *dest = strdup(src); | |
137 | if (!*dest) { | |
138 | ERR("Failed to allocate %s string.", opt_name); | |
139 | goto error; | |
140 | } | |
141 | ||
142 | ret = true; | |
143 | goto end; | |
144 | ||
145 | error: | |
146 | ret = false; | |
147 | ||
148 | end: | |
149 | return ret; | |
150 | } | |
151 | ||
152 | /* This is defined in enable_events.c. */ | |
153 | LTTNG_HIDDEN | |
154 | int create_exclusion_list_and_validate(const char *event_name, | |
155 | const char *exclusions_arg, | |
156 | char ***exclusion_list); | |
157 | ||
158 | /* | |
159 | * Parse `str` as a log level in domain `domain_type`. Return -1 if the string | |
160 | * is not recognized as a valid log level. | |
161 | */ | |
162 | static | |
163 | int parse_loglevel_string(const char *str, enum lttng_domain_type domain_type) | |
164 | { | |
165 | ||
166 | switch (domain_type) { | |
167 | case LTTNG_DOMAIN_UST: | |
168 | return loglevel_str_to_value(str); | |
169 | ||
170 | case LTTNG_DOMAIN_LOG4J: | |
171 | return loglevel_log4j_str_to_value(str); | |
172 | ||
173 | case LTTNG_DOMAIN_JUL: | |
174 | return loglevel_jul_str_to_value(str); | |
175 | ||
176 | case LTTNG_DOMAIN_PYTHON: | |
177 | return loglevel_python_str_to_value(str); | |
178 | ||
179 | default: | |
180 | /* Invalid domain type. */ | |
181 | abort(); | |
182 | } | |
183 | } | |
184 | ||
185 | static | |
186 | struct lttng_event_expr *ir_op_load_expr_to_event_expr( | |
187 | struct ir_load_expression *load_exp, const char *capture_str) | |
188 | { | |
189 | struct ir_load_expression_op *load_expr_op = load_exp->child; | |
190 | struct lttng_event_expr *event_expr = NULL; | |
191 | char *provider_name = NULL; | |
192 | ||
193 | switch (load_expr_op->type) { | |
194 | case IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT: | |
195 | { | |
196 | const char *field_name; | |
197 | ||
198 | load_expr_op = load_expr_op->next; | |
199 | assert(load_expr_op); | |
200 | assert(load_expr_op->type == IR_LOAD_EXPRESSION_GET_SYMBOL); | |
201 | field_name = load_expr_op->u.symbol; | |
202 | assert(field_name); | |
203 | ||
204 | event_expr = lttng_event_expr_event_payload_field_create(field_name); | |
205 | if (!event_expr) { | |
206 | fprintf(stderr, "Failed to create payload field event expression.\n"); | |
207 | goto error; | |
208 | } | |
209 | ||
210 | break; | |
211 | } | |
212 | ||
213 | case IR_LOAD_EXPRESSION_GET_CONTEXT_ROOT: | |
214 | { | |
215 | const char *field_name; | |
216 | ||
217 | load_expr_op = load_expr_op->next; | |
218 | assert(load_expr_op); | |
219 | assert(load_expr_op->type == IR_LOAD_EXPRESSION_GET_SYMBOL); | |
220 | field_name = load_expr_op->u.symbol; | |
221 | assert(field_name); | |
222 | ||
223 | event_expr = lttng_event_expr_channel_context_field_create(field_name); | |
224 | if (!event_expr) { | |
225 | fprintf(stderr, "Failed to create channel context field event expression.\n"); | |
226 | goto error; | |
227 | } | |
228 | ||
229 | break; | |
230 | } | |
231 | ||
232 | case IR_LOAD_EXPRESSION_GET_APP_CONTEXT_ROOT: | |
233 | { | |
234 | const char *field_name; | |
235 | const char *colon; | |
236 | const char *type_name; | |
237 | ||
238 | load_expr_op = load_expr_op->next; | |
239 | assert(load_expr_op); | |
240 | assert(load_expr_op->type == IR_LOAD_EXPRESSION_GET_SYMBOL); | |
241 | field_name = load_expr_op->u.symbol; | |
242 | assert(field_name); | |
243 | ||
244 | /* | |
245 | * The field name needs to be of the form PROVIDER:TYPE. We | |
246 | * split it here. | |
247 | */ | |
248 | colon = strchr(field_name, ':'); | |
249 | if (!colon) { | |
250 | fprintf(stderr, "Invalid app-specific context field name: missing colon in `%s`.\n", | |
251 | field_name); | |
252 | goto error; | |
253 | } | |
254 | ||
255 | type_name = colon + 1; | |
256 | if (*type_name == '\0') { | |
257 | fprintf(stderr, | |
258 | "Invalid app-specific context field name: missing type name after colon in `%s`.\n", | |
259 | field_name); | |
260 | goto error; | |
261 | } | |
262 | ||
263 | provider_name = strndup(field_name, colon - field_name); | |
264 | if (!provider_name) { | |
265 | fprintf(stderr, "Failed to allocate string.\n"); | |
266 | goto error; | |
267 | } | |
268 | ||
269 | event_expr = lttng_event_expr_app_specific_context_field_create( | |
270 | provider_name, type_name); | |
271 | if (!event_expr) { | |
272 | fprintf(stderr, | |
273 | "Failed to create app-specific context field event expression.\n"); | |
274 | goto error; | |
275 | } | |
276 | ||
277 | break; | |
278 | } | |
279 | ||
280 | default: | |
281 | fprintf(stderr, "%s: unexpected load expr type %d.\n", | |
282 | __func__, load_expr_op->type); | |
283 | abort(); | |
284 | } | |
285 | ||
286 | load_expr_op = load_expr_op->next; | |
287 | ||
288 | /* There may be a single array index after that. */ | |
289 | if (load_expr_op->type == IR_LOAD_EXPRESSION_GET_INDEX) { | |
290 | uint64_t index = load_expr_op->u.index; | |
291 | struct lttng_event_expr *index_event_expr; | |
292 | ||
293 | index_event_expr = lttng_event_expr_array_field_element_create(event_expr, index); | |
294 | if (!index_event_expr) { | |
295 | fprintf(stderr, "Failed to create array field element event expression.\n"); | |
296 | goto error; | |
297 | } | |
298 | ||
299 | event_expr = index_event_expr; | |
300 | load_expr_op = load_expr_op->next; | |
301 | } | |
302 | ||
303 | switch (load_expr_op->type) { | |
304 | case IR_LOAD_EXPRESSION_LOAD_FIELD: | |
305 | /* | |
306 | * This is what we expect, IR_LOAD_EXPRESSION_LOAD_FIELD is | |
307 | * always found at the end of the chain. | |
308 | */ | |
309 | break; | |
310 | case IR_LOAD_EXPRESSION_GET_SYMBOL: | |
311 | fprintf(stderr, "Error: While parsing expression `%s`: Capturing subfields is not supported.\n", | |
312 | capture_str); | |
313 | goto error; | |
314 | ||
315 | default: | |
316 | fprintf(stderr, "%s: unexpected load expression operator %s.\n", | |
317 | __func__, ir_load_expression_type_str(load_expr_op->type)); | |
318 | abort(); | |
319 | } | |
320 | ||
321 | goto end; | |
322 | ||
323 | error: | |
324 | lttng_event_expr_destroy(event_expr); | |
325 | event_expr = NULL; | |
326 | ||
327 | end: | |
328 | free(provider_name); | |
329 | ||
330 | return event_expr; | |
331 | } | |
332 | ||
333 | static | |
334 | struct lttng_event_expr *ir_op_load_to_event_expr(struct ir_op *ir, | |
335 | const char *capture_str) | |
336 | { | |
337 | struct lttng_event_expr *event_expr = NULL; | |
338 | ||
339 | assert(ir->op == IR_OP_LOAD); | |
340 | ||
341 | switch (ir->data_type) { | |
342 | case IR_DATA_EXPRESSION: | |
343 | { | |
344 | struct ir_load_expression *ir_load_expr = ir->u.load.u.expression; | |
345 | event_expr = ir_op_load_expr_to_event_expr(ir_load_expr, capture_str); | |
346 | break; | |
347 | } | |
348 | ||
349 | default: | |
350 | fprintf(stderr, "%s: unexpected data type: %s.\n", __func__, | |
351 | ir_data_type_str(ir->data_type)); | |
352 | abort(); | |
353 | } | |
354 | ||
355 | return event_expr; | |
356 | } | |
357 | ||
358 | static | |
359 | struct lttng_event_expr *ir_op_root_to_event_expr(struct ir_op *ir, | |
360 | const char *capture_str) | |
361 | { | |
362 | struct lttng_event_expr *event_expr = NULL; | |
363 | ||
364 | assert(ir->op == IR_OP_ROOT); | |
365 | ir = ir->u.root.child; | |
366 | ||
367 | switch (ir->op) { | |
368 | case IR_OP_LOAD: | |
369 | event_expr = ir_op_load_to_event_expr(ir, capture_str); | |
370 | break; | |
371 | ||
372 | case IR_OP_BINARY: | |
373 | fprintf(stderr, "Error: While parsing expression `%s`: Binary operators are not allowed in capture expressions.\n", | |
374 | capture_str); | |
375 | break; | |
376 | ||
377 | case IR_OP_UNARY: | |
378 | fprintf(stderr, "Error: While parsing expression `%s`: Unary operators are not allowed in capture expressions.\n", | |
379 | capture_str); | |
380 | break; | |
381 | ||
382 | case IR_OP_LOGICAL: | |
383 | fprintf(stderr, "Error: While parsing expression `%s`: Logical operators are not allowed in capture expressions.\n", | |
384 | capture_str); | |
385 | break; | |
386 | ||
387 | default: | |
388 | fprintf(stderr, "%s: unexpected IR op type: %s.\n", __func__, | |
389 | ir_op_type_str(ir->op)); | |
390 | abort(); | |
391 | } | |
392 | ||
393 | return event_expr; | |
394 | } | |
395 | ||
396 | static | |
397 | void destroy_event_expr(void *ptr) | |
398 | { | |
399 | lttng_event_expr_destroy(ptr); | |
400 | } | |
401 | ||
402 | struct parse_event_rule_res { | |
403 | /* Owned by this */ | |
404 | struct lttng_event_rule *er; | |
405 | ||
406 | /* Array of `struct lttng_event_expr *` */ | |
407 | struct lttng_dynamic_pointer_array capture_descriptors; | |
408 | }; | |
409 | ||
410 | static | |
411 | struct parse_event_rule_res parse_event_rule(int *argc, const char ***argv) | |
412 | { | |
413 | enum lttng_domain_type domain_type = LTTNG_DOMAIN_NONE; | |
414 | enum lttng_event_rule_type event_rule_type = LTTNG_EVENT_RULE_TYPE_UNKNOWN; | |
415 | struct argpar_state *state; | |
416 | struct argpar_item *item = NULL; | |
417 | char *error = NULL; | |
418 | int consumed_args = -1; | |
419 | struct lttng_userspace_probe_location *userspace_probe_location = NULL; | |
420 | struct parse_event_rule_res res = { 0 }; | |
421 | struct lttng_event_expr *event_expr = NULL; | |
422 | struct filter_parser_ctx *parser_ctx = NULL; | |
423 | ||
424 | /* Was the -a/--all flag provided? */ | |
425 | bool all_events = false; | |
426 | ||
427 | /* Tracepoint name (non-option argument) */ | |
428 | const char *tracepoint_name = NULL; | |
429 | ||
430 | /* Holds the argument of --probe / --userspace-probe. */ | |
431 | char *source = NULL; | |
432 | ||
433 | /* Filter */ | |
434 | char *filter = NULL; | |
435 | ||
436 | /* Exclude */ | |
437 | char *exclude = NULL; | |
438 | char **exclusion_list = NULL; | |
439 | ||
440 | /* Log level */ | |
441 | char *loglevel_str = NULL; | |
442 | bool loglevel_only = false; | |
443 | ||
444 | lttng_dynamic_pointer_array_init(&res.capture_descriptors, | |
445 | destroy_event_expr); | |
446 | state = argpar_state_create(*argc, *argv, event_rule_opt_descrs); | |
447 | if (!state) { | |
448 | ERR("Failed to allocate an argpar state."); | |
449 | goto error; | |
450 | } | |
451 | ||
452 | while (true) { | |
453 | enum argpar_state_parse_next_status status; | |
454 | ||
455 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
456 | status = argpar_state_parse_next(state, &item, &error); | |
457 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
458 | ERR("%s", error); | |
459 | goto error; | |
460 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
461 | /* Just stop parsing here. */ | |
462 | break; | |
463 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
464 | break; | |
465 | } | |
466 | ||
467 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
468 | ||
469 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
470 | struct argpar_item_opt *item_opt = | |
471 | (struct argpar_item_opt *) item; | |
472 | ||
473 | switch (item_opt->descr->id) { | |
474 | /* Domains */ | |
475 | case OPT_USERSPACE: | |
476 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_UST)) { | |
477 | goto error; | |
478 | } | |
479 | break; | |
480 | ||
481 | case OPT_KERNEL: | |
482 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_KERNEL)) { | |
483 | goto error; | |
484 | } | |
485 | break; | |
486 | ||
487 | case OPT_LOG4J: | |
488 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_LOG4J)) { | |
489 | goto error; | |
490 | } | |
491 | break; | |
492 | ||
493 | case OPT_JUL: | |
494 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_JUL)) { | |
495 | goto error; | |
496 | } | |
497 | break; | |
498 | ||
499 | case OPT_PYTHON: | |
500 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_PYTHON)) { | |
501 | goto error; | |
502 | } | |
503 | break; | |
504 | ||
505 | /* Event rule types */ | |
506 | case OPT_FUNCTION: | |
507 | if (!assign_event_rule_type(&event_rule_type, | |
508 | LTTNG_EVENT_RULE_TYPE_KRETPROBE)) { | |
509 | goto error; | |
510 | } | |
511 | break; | |
512 | ||
513 | case OPT_PROBE: | |
514 | if (!assign_event_rule_type(&event_rule_type, | |
515 | LTTNG_EVENT_RULE_TYPE_KPROBE)) { | |
516 | goto error; | |
517 | } | |
518 | ||
519 | if (!assign_string(&source, item_opt->arg, "source")) { | |
520 | goto error; | |
521 | } | |
522 | ||
523 | break; | |
524 | ||
525 | case OPT_USERSPACE_PROBE: | |
526 | if (!assign_event_rule_type(&event_rule_type, | |
527 | LTTNG_EVENT_RULE_TYPE_UPROBE)) { | |
528 | goto error; | |
529 | } | |
530 | ||
531 | if (!assign_string(&source, item_opt->arg, "source")) { | |
532 | goto error; | |
533 | } | |
534 | break; | |
535 | ||
536 | case OPT_SYSCALL: | |
537 | if (!assign_event_rule_type(&event_rule_type, | |
538 | LTTNG_EVENT_RULE_TYPE_SYSCALL)) { | |
539 | goto error; | |
540 | } | |
541 | break; | |
542 | ||
543 | case OPT_TRACEPOINT: | |
544 | if (!assign_event_rule_type(&event_rule_type, | |
545 | LTTNG_EVENT_RULE_TYPE_TRACEPOINT)) { | |
546 | goto error; | |
547 | } | |
548 | break; | |
549 | ||
550 | case OPT_ALL: | |
551 | all_events = true; | |
552 | break; | |
553 | ||
554 | case OPT_FILTER: | |
555 | if (!assign_string(&filter, item_opt->arg, "--filter/-f")) { | |
556 | goto error; | |
557 | } | |
558 | break; | |
559 | ||
560 | case OPT_EXCLUDE: | |
561 | if (!assign_string(&exclude, item_opt->arg, "--exclude/-x")) { | |
562 | goto error; | |
563 | } | |
564 | break; | |
565 | ||
566 | case OPT_LOGLEVEL: | |
567 | case OPT_LOGLEVEL_ONLY: | |
568 | if (!assign_string(&loglevel_str, item_opt->arg, "--loglevel/--loglevel-only")) { | |
569 | goto error; | |
570 | } | |
571 | ||
572 | loglevel_only = item_opt->descr->id == OPT_LOGLEVEL_ONLY; | |
573 | break; | |
574 | ||
575 | case OPT_CAPTURE: | |
576 | { | |
577 | const char *capture_str = item_opt->arg; | |
578 | int ret; | |
579 | ||
580 | ret = filter_parser_ctx_create_from_filter_expression( | |
581 | capture_str, &parser_ctx); | |
582 | if (ret) { | |
583 | fprintf(stderr, "Failed to parse capture expression `%s`.\n", capture_str); | |
584 | goto error; | |
585 | } | |
586 | ||
587 | event_expr = ir_op_root_to_event_expr(parser_ctx->ir_root, | |
588 | capture_str); | |
589 | if (!event_expr) { | |
590 | /* ir_op_root_to_event_expr has printed an error message. */ | |
591 | goto error; | |
592 | } | |
593 | ||
594 | ret = lttng_dynamic_pointer_array_add_pointer( | |
595 | &res.capture_descriptors, | |
596 | event_expr); | |
597 | if (ret) { | |
598 | goto error; | |
599 | } | |
600 | ||
601 | /* The ownership of event expression was transferred to the dynamic array. */ | |
602 | event_expr = NULL; | |
603 | ||
604 | break; | |
605 | } | |
606 | ||
607 | default: | |
608 | abort(); | |
609 | } | |
610 | } else { | |
611 | struct argpar_item_non_opt *item_non_opt = | |
612 | (struct argpar_item_non_opt *) item; | |
613 | ||
614 | /* | |
615 | * Don't accept two non-option arguments/tracepoint | |
616 | * names. | |
617 | */ | |
618 | if (tracepoint_name) { | |
619 | ERR( | |
620 | "Unexpected argument: %s", | |
621 | item_non_opt->arg); | |
622 | goto error; | |
623 | } | |
624 | ||
625 | tracepoint_name = item_non_opt->arg; | |
626 | } | |
627 | } | |
628 | ||
629 | if (event_rule_type == LTTNG_EVENT_RULE_TYPE_UNKNOWN) { | |
630 | event_rule_type = LTTNG_EVENT_RULE_TYPE_TRACEPOINT; | |
631 | } | |
632 | ||
633 | /* | |
634 | * Option -a is applicable to event rules of type tracepoint and | |
635 | * syscall, and it is equivalent to using "*" as the tracepoint name. | |
636 | */ | |
637 | if (all_events) { | |
638 | switch (event_rule_type) { | |
639 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
640 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
641 | break; | |
642 | default: | |
643 | ERR("Can't use -a/--all with event rule of type %s.", | |
644 | lttng_event_rule_type_str(event_rule_type)); | |
645 | goto error; | |
646 | } | |
647 | ||
648 | if (tracepoint_name) { | |
649 | ERR("Can't provide a tracepoint name with -a/--all."); | |
650 | goto error; | |
651 | } | |
652 | ||
653 | /* In which case, it's equivalent to tracepoint name "*". */ | |
654 | tracepoint_name = "*"; | |
655 | } | |
656 | ||
657 | /* | |
658 | * A tracepoint name (or -a, for the event rule types that accept it) | |
659 | * is required. | |
660 | */ | |
661 | if (!tracepoint_name) { | |
662 | ERR("Need to provide either a tracepoint name or -a/--all."); | |
663 | goto error; | |
664 | } | |
665 | ||
666 | /* | |
667 | * We don't support multiple tracepoint names for now. | |
668 | */ | |
669 | if (strchr(tracepoint_name, ',')) { | |
670 | ERR("multiple tracepoint names are not supported at the moment."); | |
671 | goto error; | |
672 | } | |
673 | ||
674 | /* | |
675 | * Update *argc and *argv so our caller can keep parsing what follows. | |
676 | */ | |
677 | consumed_args = argpar_state_get_ingested_orig_args(state); | |
678 | assert(consumed_args >= 0); | |
679 | *argc -= consumed_args; | |
680 | *argv += consumed_args; | |
681 | ||
682 | /* Need to specify a domain. */ | |
683 | if (domain_type == LTTNG_DOMAIN_NONE) { | |
684 | ERR("Please specify a domain (-k/-u/-j)."); | |
685 | goto error; | |
686 | } | |
687 | ||
688 | /* Validate event rule type against domain. */ | |
689 | switch (event_rule_type) { | |
690 | case LTTNG_EVENT_RULE_TYPE_KPROBE: | |
691 | case LTTNG_EVENT_RULE_TYPE_KRETPROBE: | |
692 | case LTTNG_EVENT_RULE_TYPE_UPROBE: | |
693 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
694 | if (domain_type != LTTNG_DOMAIN_KERNEL) { | |
695 | ERR("Event type not available for user-space tracing"); | |
696 | goto error; | |
697 | } | |
698 | break; | |
699 | ||
700 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
701 | break; | |
702 | ||
703 | default: | |
704 | abort(); | |
705 | } | |
706 | ||
707 | /* | |
708 | * Adding a filter to a probe, function or userspace-probe would be | |
709 | * denied by the kernel tracer as it's not supported at the moment. We | |
710 | * do an early check here to warn the user. | |
711 | */ | |
712 | if (filter && domain_type == LTTNG_DOMAIN_KERNEL) { | |
713 | switch (event_rule_type) { | |
714 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
715 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
716 | break; | |
717 | default: | |
718 | ERR("Filter expressions are not supported for %s events", | |
719 | lttng_event_rule_type_str(event_rule_type)); | |
720 | goto error; | |
721 | } | |
722 | } | |
723 | ||
724 | /* If --exclude/-x was passed, split it into an exclusion list. */ | |
725 | if (exclude) { | |
726 | if (domain_type != LTTNG_DOMAIN_UST) { | |
727 | ERR("Event name exclusions are not yet implemented for %s events", | |
728 | get_domain_str(domain_type)); | |
729 | goto error; | |
730 | } | |
731 | ||
732 | ||
733 | if (create_exclusion_list_and_validate(tracepoint_name, exclude, | |
734 | &exclusion_list) != 0) { | |
735 | ERR("Failed to create exclusion list."); | |
736 | goto error; | |
737 | } | |
738 | } | |
739 | ||
740 | if (loglevel_str && event_rule_type != LTTNG_EVENT_RULE_TYPE_TRACEPOINT) { | |
741 | ERR("Log levels are only application to tracepoint event rules."); | |
742 | goto error; | |
743 | } | |
744 | ||
745 | /* Finally, create the event rule object. */ | |
746 | switch (event_rule_type) { | |
747 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
748 | { | |
749 | enum lttng_event_rule_status event_rule_status; | |
750 | ||
751 | res.er = lttng_event_rule_tracepoint_create(domain_type); | |
752 | if (!res.er) { | |
753 | ERR("Failed to create tracepoint event rule."); | |
754 | goto error; | |
755 | } | |
756 | ||
757 | /* Set pattern. */ | |
758 | event_rule_status = | |
759 | lttng_event_rule_tracepoint_set_pattern(res.er, tracepoint_name); | |
760 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
761 | ERR("Failed to set tracepoint pattern."); | |
762 | goto error; | |
763 | } | |
764 | ||
765 | /* Set filter. */ | |
766 | if (filter) { | |
767 | event_rule_status = | |
768 | lttng_event_rule_tracepoint_set_filter( | |
769 | res.er, filter); | |
770 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
771 | ERR("Failed to set tracepoint filter expression."); | |
772 | goto error; | |
773 | } | |
774 | } | |
775 | ||
776 | /* Set exclusion list. */ | |
777 | if (exclusion_list) { | |
778 | int n; | |
779 | ||
780 | /* Count number of items in exclusion list. */ | |
781 | for (n = 0; exclusion_list[n]; n++); | |
782 | ||
783 | event_rule_status = | |
784 | lttng_event_rule_tracepoint_set_exclusions( | |
785 | res.er, | |
786 | n, (const char **) exclusion_list); | |
787 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
788 | ERR("Failed to set tracepoint exclusion list."); | |
789 | goto error; | |
790 | } | |
791 | } | |
792 | ||
793 | if (loglevel_str) { | |
794 | int loglevel; | |
795 | ||
796 | if (domain_type == LTTNG_DOMAIN_KERNEL) { | |
797 | ERR("Log levels are not supported by the kernel tracer."); | |
798 | goto error; | |
799 | } | |
800 | ||
801 | loglevel = parse_loglevel_string( | |
802 | loglevel_str, domain_type); | |
803 | if (loglevel < 0) { | |
804 | ERR("Failed to parse `%s` as a log level.", loglevel_str); | |
805 | goto error; | |
806 | } | |
807 | ||
808 | if (loglevel_only) { | |
809 | event_rule_status = | |
810 | lttng_event_rule_tracepoint_set_loglevel( | |
811 | res.er, loglevel); | |
812 | } else { | |
813 | event_rule_status = | |
814 | lttng_event_rule_tracepoint_set_loglevel_range( | |
815 | res.er, loglevel); | |
816 | } | |
817 | ||
818 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
819 | ERR("Failed to set log level."); | |
820 | goto error; | |
821 | } | |
822 | } | |
823 | ||
824 | break; | |
825 | } | |
826 | ||
827 | case LTTNG_EVENT_RULE_TYPE_KPROBE: | |
828 | { | |
829 | enum lttng_event_rule_status event_rule_status; | |
830 | ||
831 | res.er = lttng_event_rule_kprobe_create(); | |
832 | if (!res.er) { | |
833 | ERR("Failed to create kprobe event rule."); | |
834 | goto error; | |
835 | } | |
836 | ||
837 | event_rule_status = lttng_event_rule_kprobe_set_name(res.er, tracepoint_name); | |
838 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
839 | ERR("Failed to set kprobe event rule's name."); | |
840 | goto error; | |
841 | } | |
842 | ||
843 | assert(source); | |
844 | event_rule_status = lttng_event_rule_kprobe_set_source(res.er, source); | |
845 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
846 | ERR("Failed to set kprobe event rule's source."); | |
847 | goto error; | |
848 | } | |
849 | ||
850 | break; | |
851 | } | |
852 | ||
853 | case LTTNG_EVENT_RULE_TYPE_UPROBE: | |
854 | { | |
855 | int ret; | |
856 | enum lttng_event_rule_status event_rule_status; | |
857 | ||
858 | ret = parse_userspace_probe_opts(source, &userspace_probe_location); | |
859 | if (ret) { | |
860 | ERR("Failed to parse userspace probe location."); | |
861 | goto error; | |
862 | } | |
863 | ||
864 | res.er = lttng_event_rule_uprobe_create(); | |
865 | if (!res.er) { | |
866 | ERR("Failed to create userspace probe event rule."); | |
867 | goto error; | |
868 | } | |
869 | ||
870 | event_rule_status = lttng_event_rule_uprobe_set_location(res.er, userspace_probe_location); | |
871 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
872 | ERR("Failed to set userspace probe event rule's location."); | |
873 | goto error; | |
874 | } | |
875 | ||
876 | event_rule_status = lttng_event_rule_uprobe_set_name(res.er, tracepoint_name); | |
877 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
878 | ERR("Failed to set userspace probe event rule's name."); | |
879 | goto error; | |
880 | } | |
881 | ||
882 | break; | |
883 | } | |
884 | ||
885 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
886 | { | |
887 | enum lttng_event_rule_status event_rule_status; | |
888 | ||
889 | res.er = lttng_event_rule_syscall_create(); | |
890 | if (!res.er) { | |
891 | ERR("Failed to create syscall event rule."); | |
892 | goto error; | |
893 | } | |
894 | ||
895 | event_rule_status = lttng_event_rule_syscall_set_pattern(res.er, tracepoint_name); | |
896 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
897 | ERR("Failed to set syscall event rule's pattern."); | |
898 | goto error; | |
899 | } | |
900 | ||
901 | if (filter) { | |
902 | event_rule_status = lttng_event_rule_syscall_set_filter( | |
903 | res.er, filter); | |
904 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
905 | ERR("Failed to set syscall event rule's filter expression."); | |
906 | goto error; | |
907 | } | |
908 | } | |
909 | ||
910 | break; | |
911 | } | |
912 | ||
913 | default: | |
914 | ERR("%s: I don't support event rules of type `%s` at the moment.", __func__, | |
915 | lttng_event_rule_type_str(event_rule_type)); | |
916 | goto error; | |
917 | } | |
918 | ||
919 | goto end; | |
920 | ||
921 | error: | |
922 | lttng_event_rule_destroy(res.er); | |
923 | res.er = NULL; | |
924 | lttng_dynamic_pointer_array_reset(&res.capture_descriptors); | |
925 | ||
926 | end: | |
927 | if (parser_ctx) { | |
928 | filter_parser_ctx_free(parser_ctx); | |
929 | } | |
930 | ||
931 | lttng_event_expr_destroy(event_expr); | |
932 | argpar_item_destroy(item); | |
933 | free(error); | |
934 | argpar_state_destroy(state); | |
935 | free(filter); | |
936 | free(exclude); | |
937 | free(loglevel_str); | |
938 | strutils_free_null_terminated_array_of_strings(exclusion_list); | |
939 | lttng_userspace_probe_location_destroy(userspace_probe_location); | |
940 | return res; | |
941 | } | |
942 | ||
943 | static | |
944 | struct lttng_condition *handle_condition_event(int *argc, const char ***argv) | |
945 | { | |
946 | struct parse_event_rule_res res; | |
947 | struct lttng_condition *c; | |
948 | size_t i; | |
949 | ||
950 | res = parse_event_rule(argc, argv); | |
951 | if (!res.er) { | |
952 | c = NULL; | |
953 | goto error; | |
954 | } | |
955 | ||
956 | c = lttng_condition_event_rule_create(res.er); | |
957 | if (!c) { | |
958 | goto error; | |
959 | } | |
960 | ||
961 | /* Event rule ownership moved to `c` */ | |
962 | res.er = NULL; | |
963 | ||
964 | for (i = 0; i < lttng_dynamic_pointer_array_get_count(&res.capture_descriptors); | |
965 | i++) { | |
966 | enum lttng_condition_status status; | |
967 | struct lttng_event_expr **expr = | |
968 | lttng_dynamic_array_get_element( | |
969 | &res.capture_descriptors.array, i); | |
970 | ||
971 | assert(expr); | |
972 | assert(*expr); | |
973 | status = lttng_condition_event_rule_append_capture_descriptor( | |
974 | c, *expr); | |
975 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
976 | if (status == LTTNG_CONDITION_STATUS_UNSUPPORTED) { | |
977 | ERR("The capture feature is unsupported by the event-rule type"); | |
978 | } | |
979 | goto error; | |
980 | } | |
981 | ||
982 | /* Ownership of event expression moved to `c` */ | |
983 | *expr = NULL; | |
984 | } | |
985 | ||
986 | goto end; | |
987 | ||
988 | error: | |
989 | lttng_condition_destroy(c); | |
990 | c = NULL; | |
991 | ||
992 | end: | |
993 | lttng_dynamic_pointer_array_reset(&res.capture_descriptors); | |
994 | lttng_event_rule_destroy(res.er); | |
995 | return c; | |
996 | } | |
997 | ||
998 | static | |
999 | struct lttng_condition *handle_condition_session_consumed_size(int *argc, const char ***argv) | |
1000 | { | |
1001 | struct lttng_condition *cond = NULL; | |
1002 | struct argpar_state *state = NULL; | |
1003 | struct argpar_item *item = NULL; | |
1004 | const char *threshold_arg = NULL; | |
1005 | const char *session_name_arg = NULL; | |
1006 | uint64_t threshold; | |
1007 | char *error = NULL; | |
1008 | enum lttng_condition_status condition_status; | |
1009 | ||
1010 | state = argpar_state_create(*argc, *argv, event_rule_opt_descrs); | |
1011 | if (!state) { | |
1012 | ERR("Failed to allocate an argpar state."); | |
1013 | goto error; | |
1014 | } | |
1015 | ||
1016 | while (true) { | |
1017 | enum argpar_state_parse_next_status status; | |
1018 | ||
1019 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1020 | status = argpar_state_parse_next(state, &item, &error); | |
1021 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1022 | ERR("%s", error); | |
1023 | goto error; | |
1024 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1025 | /* Just stop parsing here. */ | |
1026 | break; | |
1027 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1028 | break; | |
1029 | } | |
1030 | ||
1031 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1032 | ||
1033 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
1034 | struct argpar_item_opt *item_opt = | |
1035 | (struct argpar_item_opt *) item; | |
1036 | ||
1037 | switch (item_opt->descr->id) { | |
1038 | default: | |
1039 | abort(); | |
1040 | } | |
1041 | } else { | |
1042 | struct argpar_item_non_opt *item_non_opt; | |
1043 | ||
1044 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1045 | ||
1046 | item_non_opt = (struct argpar_item_non_opt *) item; | |
1047 | ||
1048 | switch (item_non_opt->non_opt_index) { | |
1049 | case 0: | |
1050 | session_name_arg = item_non_opt->arg; | |
1051 | break; | |
1052 | case 1: | |
1053 | threshold_arg = item_non_opt->arg; | |
1054 | break; | |
1055 | default: | |
1056 | ERR("Unexpected argument `%s`.", | |
1057 | item_non_opt->arg); | |
1058 | goto error; | |
1059 | } | |
1060 | } | |
1061 | } | |
1062 | ||
1063 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1064 | *argv += argpar_state_get_ingested_orig_args(state); | |
1065 | ||
1066 | if (!session_name_arg) { | |
1067 | ERR("Missing session name argument."); | |
1068 | goto error; | |
1069 | } | |
1070 | ||
1071 | if (!threshold_arg) { | |
1072 | ERR("Missing threshold argument."); | |
1073 | goto error; | |
1074 | } | |
1075 | ||
1076 | if (utils_parse_size_suffix(threshold_arg, &threshold) != 0) { | |
1077 | ERR("Failed to parse `%s` as a size.", threshold_arg); | |
1078 | goto error; | |
1079 | } | |
1080 | ||
1081 | cond = lttng_condition_session_consumed_size_create(); | |
1082 | if (!cond) { | |
1083 | ERR("Failed to allocate a session consumed size condition."); | |
1084 | goto error; | |
1085 | } | |
1086 | ||
1087 | condition_status = lttng_condition_session_consumed_size_set_session_name( | |
1088 | cond, session_name_arg); | |
1089 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
1090 | ERR("Failed to set session consumed size condition session name."); | |
1091 | goto error; | |
1092 | } | |
1093 | ||
1094 | ||
1095 | condition_status = lttng_condition_session_consumed_size_set_threshold( | |
1096 | cond, threshold); | |
1097 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
1098 | ERR("Failed to set session consumed size condition threshold."); | |
1099 | goto error; | |
1100 | } | |
1101 | ||
1102 | goto end; | |
1103 | ||
1104 | error: | |
1105 | lttng_condition_destroy(cond); | |
1106 | cond = NULL; | |
1107 | ||
1108 | end: | |
1109 | argpar_state_destroy(state); | |
1110 | argpar_item_destroy(item); | |
1111 | free(error); | |
1112 | return cond; | |
1113 | } | |
1114 | ||
1115 | static | |
1116 | struct lttng_condition *handle_condition_buffer_usage_high(int *argc, const char ***argv) | |
1117 | { | |
1118 | struct lttng_condition *cond = NULL; | |
1119 | struct argpar_state *state = NULL; | |
1120 | struct argpar_item *item = NULL; | |
1121 | const char *threshold_arg = NULL; | |
1122 | const char *session_name_arg = NULL; | |
1123 | uint64_t threshold; | |
1124 | char *error = NULL; | |
1125 | enum lttng_condition_status condition_status; | |
1126 | ||
1127 | state = argpar_state_create(*argc, *argv, event_rule_opt_descrs); | |
1128 | if (!state) { | |
1129 | ERR("Failed to allocate an argpar state."); | |
1130 | goto error; | |
1131 | } | |
1132 | ||
1133 | while (true) { | |
1134 | enum argpar_state_parse_next_status status; | |
1135 | ||
1136 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1137 | status = argpar_state_parse_next(state, &item, &error); | |
1138 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1139 | ERR("%s", error); | |
1140 | goto error; | |
1141 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1142 | /* Just stop parsing here. */ | |
1143 | break; | |
1144 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1145 | break; | |
1146 | } | |
1147 | ||
1148 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1149 | ||
1150 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
1151 | struct argpar_item_opt *item_opt = | |
1152 | (struct argpar_item_opt *) item; | |
1153 | ||
1154 | switch (item_opt->descr->id) { | |
1155 | default: | |
1156 | abort(); | |
1157 | } | |
1158 | } else { | |
1159 | struct argpar_item_non_opt *item_non_opt; | |
1160 | ||
1161 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1162 | ||
1163 | item_non_opt = (struct argpar_item_non_opt *) item; | |
1164 | ||
1165 | switch (item_non_opt->non_opt_index) { | |
1166 | case 0: | |
1167 | session_name_arg = item_non_opt->arg; | |
1168 | break; | |
1169 | case 1: | |
1170 | threshold_arg = item_non_opt->arg; | |
1171 | break; | |
1172 | default: | |
1173 | ERR("Unexpected argument `%s`.", | |
1174 | item_non_opt->arg); | |
1175 | goto error; | |
1176 | } | |
1177 | } | |
1178 | } | |
1179 | ||
1180 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1181 | *argv += argpar_state_get_ingested_orig_args(state); | |
1182 | ||
1183 | if (!session_name_arg) { | |
1184 | ERR("Missing session name argument."); | |
1185 | goto error; | |
1186 | } | |
1187 | ||
1188 | if (!threshold_arg) { | |
1189 | ERR("Missing threshold argument."); | |
1190 | goto error; | |
1191 | } | |
1192 | ||
1193 | if (utils_parse_size_suffix(threshold_arg, &threshold) != 0) { | |
1194 | ERR("Failed to parse `%s` as a size.", threshold_arg); | |
1195 | goto error; | |
1196 | } | |
1197 | ||
1198 | cond = lttng_condition_session_consumed_size_create(); | |
1199 | if (!cond) { | |
1200 | ERR("Failed to allocate a session consumed size condition."); | |
1201 | goto error; | |
1202 | } | |
1203 | ||
1204 | condition_status = lttng_condition_session_consumed_size_set_session_name( | |
1205 | cond, session_name_arg); | |
1206 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
1207 | ERR("Failed to set session consumed size condition session name."); | |
1208 | goto error; | |
1209 | } | |
1210 | ||
1211 | condition_status = lttng_condition_session_consumed_size_set_threshold( | |
1212 | cond, threshold); | |
1213 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
1214 | ERR("Failed to set session consumed size condition threshold."); | |
1215 | goto error; | |
1216 | } | |
1217 | ||
1218 | goto end; | |
1219 | ||
1220 | error: | |
1221 | lttng_condition_destroy(cond); | |
1222 | cond = NULL; | |
1223 | ||
1224 | end: | |
1225 | argpar_state_destroy(state); | |
1226 | argpar_item_destroy(item); | |
1227 | free(error); | |
1228 | return cond; | |
1229 | } | |
1230 | ||
1231 | static | |
1232 | struct lttng_condition *handle_condition_buffer_usage_low(int *argc, const char ***argv) | |
1233 | { | |
1234 | return NULL; | |
1235 | } | |
1236 | ||
1237 | static | |
1238 | struct lttng_condition *handle_condition_session_rotation_ongoing(int *argc, const char ***argv) | |
1239 | { | |
1240 | return NULL; | |
1241 | } | |
1242 | ||
1243 | static | |
1244 | struct lttng_condition *handle_condition_session_rotation_completed(int *argc, const char ***argv) | |
1245 | { | |
1246 | return NULL; | |
1247 | } | |
1248 | ||
1249 | struct condition_descr { | |
1250 | const char *name; | |
1251 | struct lttng_condition *(*handler) (int *argc, const char ***argv); | |
1252 | }; | |
1253 | ||
1254 | static const | |
1255 | struct condition_descr condition_descrs[] = { | |
1256 | { "on-event", handle_condition_event }, | |
1257 | { "on-session-consumed-size", handle_condition_session_consumed_size }, | |
1258 | { "on-buffer-usage-high", handle_condition_buffer_usage_high }, | |
1259 | { "on-buffer-usage-low", handle_condition_buffer_usage_low }, | |
1260 | { "on-session-rotation-ongoing", handle_condition_session_rotation_ongoing }, | |
1261 | { "on-session-rotation-completed", handle_condition_session_rotation_completed }, | |
1262 | }; | |
1263 | ||
1264 | static | |
1265 | struct lttng_condition *parse_condition(int *argc, const char ***argv) | |
1266 | { | |
1267 | int i; | |
1268 | struct lttng_condition *cond; | |
1269 | const char *condition_name; | |
1270 | const struct condition_descr *descr = NULL; | |
1271 | ||
1272 | if (*argc == 0) { | |
1273 | ERR("Missing condition name."); | |
1274 | goto error; | |
1275 | } | |
1276 | ||
1277 | condition_name = (*argv)[0]; | |
1278 | ||
1279 | (*argc)--; | |
1280 | (*argv)++; | |
1281 | ||
1282 | for (i = 0; i < ARRAY_SIZE(condition_descrs); i++) { | |
1283 | if (strcmp(condition_name, condition_descrs[i].name) == 0) { | |
1284 | descr = &condition_descrs[i]; | |
1285 | break; | |
1286 | } | |
1287 | } | |
1288 | ||
1289 | if (!descr) { | |
1290 | ERR("Unknown condition name: %s", condition_name); | |
1291 | goto error; | |
1292 | } | |
1293 | ||
1294 | cond = descr->handler(argc, argv); | |
1295 | if (!cond) { | |
1296 | /* The handler has already printed an error message. */ | |
1297 | goto error; | |
1298 | } | |
1299 | ||
1300 | goto end; | |
1301 | error: | |
1302 | cond = NULL; | |
1303 | end: | |
1304 | return cond; | |
1305 | } | |
1306 | ||
1307 | ||
1308 | static | |
1309 | struct lttng_action *handle_action_notify(int *argc, const char ***argv) | |
1310 | { | |
1311 | return lttng_action_notify_create(); | |
1312 | } | |
1313 | ||
1314 | static const struct argpar_opt_descr no_opt_descrs[] = { | |
1315 | ARGPAR_OPT_DESCR_SENTINEL | |
1316 | }; | |
1317 | ||
1318 | /* | |
1319 | * Generic handler for a kind of action that takes a session name as its sole | |
1320 | * argument. | |
1321 | */ | |
1322 | ||
1323 | static | |
1324 | struct lttng_action *handle_action_simple_session( | |
1325 | int *argc, const char ***argv, | |
1326 | struct lttng_action *(*create_action_cb)(void), | |
1327 | enum lttng_action_status (*set_session_name_cb)(struct lttng_action *, const char *), | |
1328 | const char *action_name) | |
1329 | { | |
1330 | struct lttng_action *action = NULL; | |
1331 | struct argpar_state *state = NULL; | |
1332 | struct argpar_item *item = NULL; | |
1333 | const char *session_name_arg = NULL; | |
1334 | char *error = NULL; | |
1335 | enum lttng_action_status action_status; | |
1336 | ||
1337 | state = argpar_state_create(*argc, *argv, no_opt_descrs); | |
1338 | if (!state) { | |
1339 | ERR("Failed to allocate an argpar state."); | |
1340 | goto error; | |
1341 | } | |
1342 | ||
1343 | while (true) { | |
1344 | enum argpar_state_parse_next_status status; | |
1345 | struct argpar_item_non_opt *item_non_opt; | |
1346 | ||
1347 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1348 | status = argpar_state_parse_next(state, &item, &error); | |
1349 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1350 | ERR("%s", error); | |
1351 | goto error; | |
1352 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1353 | /* Just stop parsing here. */ | |
1354 | break; | |
1355 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1356 | break; | |
1357 | } | |
1358 | ||
1359 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1360 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1361 | ||
1362 | item_non_opt = (struct argpar_item_non_opt *) item; | |
1363 | ||
1364 | switch (item_non_opt->non_opt_index) { | |
1365 | case 0: | |
1366 | session_name_arg = item_non_opt->arg; | |
1367 | break; | |
1368 | default: | |
1369 | ERR("Unexpected argument `%s`.", | |
1370 | item_non_opt->arg); | |
1371 | goto error; | |
1372 | } | |
1373 | } | |
1374 | ||
1375 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1376 | *argv += argpar_state_get_ingested_orig_args(state); | |
1377 | ||
1378 | if (!session_name_arg) { | |
1379 | ERR("Missing session name."); | |
1380 | goto error; | |
1381 | } | |
1382 | ||
1383 | action = create_action_cb(); | |
1384 | if (!action) { | |
1385 | ERR( | |
1386 | "Failed to allocate %s session action.", action_name); | |
1387 | goto error; | |
1388 | } | |
1389 | ||
1390 | action_status = set_session_name_cb(action, session_name_arg); | |
1391 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1392 | ERR( | |
1393 | "Failed to set action %s session's session name.", | |
1394 | action_name); | |
1395 | goto error; | |
1396 | } | |
1397 | ||
1398 | goto end; | |
1399 | ||
1400 | error: | |
1401 | lttng_action_destroy(action); | |
1402 | action = NULL; | |
1403 | ||
1404 | end: | |
1405 | return action; | |
1406 | } | |
1407 | ||
1408 | static | |
1409 | struct lttng_action *handle_action_start_session(int *argc, | |
1410 | const char ***argv) | |
1411 | { | |
1412 | return handle_action_simple_session(argc, argv, | |
1413 | lttng_action_start_session_create, | |
1414 | lttng_action_start_session_set_session_name, | |
1415 | "start"); | |
1416 | } | |
1417 | ||
1418 | static | |
1419 | struct lttng_action *handle_action_stop_session(int *argc, | |
1420 | const char ***argv) | |
1421 | { | |
1422 | return handle_action_simple_session(argc, argv, | |
1423 | lttng_action_stop_session_create, | |
1424 | lttng_action_stop_session_set_session_name, | |
1425 | "stop"); | |
1426 | } | |
1427 | ||
1428 | static | |
1429 | struct lttng_action *handle_action_rotate_session(int *argc, | |
1430 | const char ***argv) | |
1431 | { | |
1432 | return handle_action_simple_session(argc, argv, | |
1433 | lttng_action_rotate_session_create, | |
1434 | lttng_action_rotate_session_set_session_name, | |
1435 | "rotate"); | |
1436 | } | |
1437 | ||
1438 | static const struct argpar_opt_descr snapshot_action_opt_descrs[] = { | |
1439 | { OPT_NAME, 'n', "name", true }, | |
1440 | { OPT_MAX_SIZE, 'm', "max-size", true }, | |
1441 | { OPT_CTRL_URL, '\0', "ctrl-url", true }, | |
1442 | { OPT_DATA_URL, '\0', "data-url", true }, | |
1443 | ARGPAR_OPT_DESCR_SENTINEL | |
1444 | }; | |
1445 | ||
1446 | static | |
1447 | struct lttng_action *handle_action_snapshot_session(int *argc, | |
1448 | const char ***argv) | |
1449 | { | |
1450 | struct lttng_action *action = NULL; | |
1451 | struct argpar_state *state = NULL; | |
1452 | struct argpar_item *item = NULL; | |
1453 | const char *session_name_arg = NULL; | |
1454 | char *snapshot_name_arg = NULL; | |
1455 | char *ctrl_url_arg = NULL; | |
1456 | char *data_url_arg = NULL; | |
1457 | char *max_size_arg = NULL; | |
1458 | const char *url_arg = NULL; | |
1459 | char *error = NULL; | |
1460 | enum lttng_action_status action_status; | |
1461 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1462 | int ret; | |
1463 | ||
1464 | state = argpar_state_create(*argc, *argv, snapshot_action_opt_descrs); | |
1465 | if (!state) { | |
1466 | ERR("Failed to allocate an argpar state."); | |
1467 | goto error; | |
1468 | } | |
1469 | ||
1470 | while (true) { | |
1471 | enum argpar_state_parse_next_status status; | |
1472 | ||
1473 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1474 | status = argpar_state_parse_next(state, &item, &error); | |
1475 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1476 | ERR("%s", error); | |
1477 | goto error; | |
1478 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1479 | /* Just stop parsing here. */ | |
1480 | break; | |
1481 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1482 | break; | |
1483 | } | |
1484 | ||
1485 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1486 | ||
1487 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
1488 | struct argpar_item_opt *item_opt = | |
1489 | (struct argpar_item_opt *) item; | |
1490 | ||
1491 | switch (item_opt->descr->id) { | |
1492 | case OPT_NAME: | |
1493 | if (!assign_string(&snapshot_name_arg, item_opt->arg, "--name/-n")) { | |
1494 | goto error; | |
1495 | } | |
1496 | break; | |
1497 | ||
1498 | case OPT_MAX_SIZE: | |
1499 | if (!assign_string(&max_size_arg, item_opt->arg, "--max-size/-m")) { | |
1500 | goto error; | |
1501 | } | |
1502 | break; | |
1503 | ||
1504 | case OPT_CTRL_URL: | |
1505 | if (!assign_string(&ctrl_url_arg, item_opt->arg, "--ctrl-url")) { | |
1506 | goto error; | |
1507 | } | |
1508 | break; | |
1509 | ||
1510 | case OPT_DATA_URL: | |
1511 | if (!assign_string(&data_url_arg, item_opt->arg, "--data-url")) { | |
1512 | goto error; | |
1513 | } | |
1514 | break; | |
1515 | ||
1516 | default: | |
1517 | abort(); | |
1518 | } | |
1519 | } else { | |
1520 | struct argpar_item_non_opt *item_non_opt; | |
1521 | ||
1522 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1523 | ||
1524 | item_non_opt = (struct argpar_item_non_opt *) item; | |
1525 | ||
1526 | switch (item_non_opt->non_opt_index) { | |
1527 | case 0: | |
1528 | session_name_arg = item_non_opt->arg; | |
1529 | break; | |
1530 | ||
1531 | // FIXME: the use of a non-option argument for this is to | |
1532 | // follow the syntax of `lttng snapshot record`. But otherwise, | |
1533 | // I think an option argument would be best. | |
1534 | case 1: | |
1535 | url_arg = item_non_opt->arg; | |
1536 | break; | |
1537 | ||
1538 | default: | |
1539 | ERR("Unexpected argument `%s`.", | |
1540 | item_non_opt->arg); | |
1541 | goto error; | |
1542 | } | |
1543 | } | |
1544 | } | |
1545 | ||
1546 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1547 | *argv += argpar_state_get_ingested_orig_args(state); | |
1548 | ||
1549 | if (!session_name_arg) { | |
1550 | ERR("Missing session name."); | |
1551 | goto error; | |
1552 | } | |
1553 | ||
1554 | /* --ctrl-url and --data-url must come in pair. */ | |
1555 | if (ctrl_url_arg && !data_url_arg) { | |
1556 | ERR("--ctrl-url is specified, but --data-url is missing."); | |
1557 | goto error; | |
1558 | } | |
1559 | ||
1560 | if (!ctrl_url_arg && data_url_arg) { | |
1561 | ERR("--data-url is specified, but --ctrl-url is missing."); | |
1562 | goto error; | |
1563 | } | |
1564 | ||
1565 | /* --ctrl-url/--data-url and the non-option URL are mutually exclusive. */ | |
1566 | if (ctrl_url_arg && url_arg) { | |
1567 | ERR("Both --ctrl-url/--data-url and the non-option URL argument " | |
1568 | "can't be used together."); | |
1569 | goto error; | |
1570 | } | |
1571 | ||
1572 | /* | |
1573 | * Did the user specify an option that implies using a | |
1574 | * custom/unregistered output? | |
1575 | */ | |
1576 | if (url_arg || ctrl_url_arg) { | |
1577 | snapshot_output = lttng_snapshot_output_create(); | |
1578 | if (!snapshot_output) { | |
1579 | ERR("Failed to allocate a snapshot output."); | |
1580 | goto error; | |
1581 | } | |
1582 | } | |
1583 | ||
1584 | action = lttng_action_snapshot_session_create(); | |
1585 | if (!action) { | |
1586 | ERR( | |
1587 | "Failed to allocate snapshot session action."); | |
1588 | goto error; | |
1589 | } | |
1590 | ||
1591 | action_status = lttng_action_snapshot_session_set_session_name( | |
1592 | action, session_name_arg); | |
1593 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1594 | ERR( | |
1595 | "Failed to set action snapshot session's session name."); | |
1596 | goto error; | |
1597 | } | |
1598 | ||
1599 | if (snapshot_name_arg) { | |
1600 | if (!snapshot_output) { | |
1601 | ERR("Can't provide a snapshot output name without a snapshot output destination."); | |
1602 | goto error; | |
1603 | } | |
1604 | ||
1605 | ret = lttng_snapshot_output_set_name(snapshot_name_arg, snapshot_output); | |
1606 | if (ret != 0) { | |
1607 | ERR("Failed to set name of snapshot output."); | |
1608 | goto error; | |
1609 | } | |
1610 | } | |
1611 | ||
1612 | if (max_size_arg) { | |
1613 | uint64_t max_size; | |
1614 | ||
1615 | if (!snapshot_output) { | |
1616 | ERR("Can't provide a snapshot output max size without a snapshot output destination."); | |
1617 | goto error; | |
1618 | } | |
1619 | ||
1620 | ret = utils_parse_size_suffix(max_size_arg, &max_size); | |
1621 | if (ret != 0) { | |
1622 | ERR("Failed to parse `%s` as a size.", max_size_arg); | |
1623 | goto error; | |
1624 | } | |
1625 | ||
1626 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1627 | if (ret != 0) { | |
1628 | ERR("Failed to set snapshot output's max size."); | |
1629 | goto error; | |
1630 | } | |
1631 | } | |
1632 | ||
1633 | if (url_arg) { | |
1634 | /* One argument form, either net:// / net6:// or a local file path. */ | |
1635 | ||
1636 | if (strncmp(url_arg, "net://", strlen("net://")) == 0 || | |
1637 | strncmp(url_arg, "net6://", strlen("net6://")) == 0) { | |
1638 | ret = lttng_snapshot_output_set_network_url( | |
1639 | url_arg, snapshot_output); | |
1640 | if (ret != 0) { | |
1641 | ERR("Failed to parse %s as a network URL.", url_arg); | |
1642 | goto error; | |
1643 | } | |
1644 | } else { | |
1645 | ret = lttng_snapshot_output_set_local_path( | |
1646 | url_arg, snapshot_output); | |
1647 | if (ret != 0) { | |
1648 | ERR("Failed to parse %s as a local path.", url_arg); | |
1649 | goto error; | |
1650 | } | |
1651 | } | |
1652 | } | |
1653 | ||
1654 | if (ctrl_url_arg) { | |
1655 | /* | |
1656 | * Two argument form, network output with separate control and | |
1657 | * data URLs. | |
1658 | */ | |
1659 | ret = lttng_snapshot_output_set_network_urls( | |
1660 | ctrl_url_arg, data_url_arg, snapshot_output); | |
1661 | if (ret != 0) { | |
1662 | ERR("Failed to parse `%s` and `%s` as control and data URLs.", | |
1663 | ctrl_url_arg, data_url_arg); | |
1664 | goto error; | |
1665 | } | |
1666 | } | |
1667 | ||
1668 | if (snapshot_output) { | |
1669 | action_status = lttng_action_snapshot_session_set_output( | |
1670 | action, snapshot_output); | |
1671 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1672 | ERR("Failed to set snapshot session action's output."); | |
1673 | goto error; | |
1674 | } | |
1675 | ||
1676 | /* Ownership of `snapshot_output` has been transferred to the action. */ | |
1677 | snapshot_output = NULL; | |
1678 | } | |
1679 | ||
1680 | goto end; | |
1681 | ||
1682 | error: | |
1683 | lttng_action_destroy(action); | |
1684 | action = NULL; | |
1685 | ||
1686 | end: | |
1687 | free(snapshot_name_arg); | |
1688 | free(ctrl_url_arg); | |
1689 | free(data_url_arg); | |
1690 | free(snapshot_output); | |
1691 | return action; | |
1692 | } | |
1693 | ||
1694 | struct action_descr { | |
1695 | const char *name; | |
1696 | struct lttng_action *(*handler) (int *argc, const char ***argv); | |
1697 | }; | |
1698 | ||
1699 | static const | |
1700 | struct action_descr action_descrs[] = { | |
1701 | { "notify", handle_action_notify }, | |
1702 | { "start-session", handle_action_start_session }, | |
1703 | { "stop-session", handle_action_stop_session }, | |
1704 | { "rotate-session", handle_action_rotate_session }, | |
1705 | { "snapshot-session", handle_action_snapshot_session }, | |
1706 | }; | |
1707 | ||
1708 | static | |
1709 | struct lttng_action *parse_action(int *argc, const char ***argv) | |
1710 | { | |
1711 | int i; | |
1712 | struct lttng_action *action; | |
1713 | const char *action_name; | |
1714 | const struct action_descr *descr = NULL; | |
1715 | ||
1716 | if (*argc == 0) { | |
1717 | ERR("Missing action name."); | |
1718 | goto error; | |
1719 | } | |
1720 | ||
1721 | action_name = (*argv)[0]; | |
1722 | ||
1723 | (*argc)--; | |
1724 | (*argv)++; | |
1725 | ||
1726 | for (i = 0; i < ARRAY_SIZE(action_descrs); i++) { | |
1727 | if (strcmp(action_name, action_descrs[i].name) == 0) { | |
1728 | descr = &action_descrs[i]; | |
1729 | break; | |
1730 | } | |
1731 | } | |
1732 | ||
1733 | if (!descr) { | |
1734 | ERR("Unknown action name: %s", action_name); | |
1735 | goto error; | |
1736 | } | |
1737 | ||
1738 | action = descr->handler(argc, argv); | |
1739 | if (!action) { | |
1740 | /* The handler has already printed an error message. */ | |
1741 | goto error; | |
1742 | } | |
1743 | ||
1744 | goto end; | |
1745 | error: | |
1746 | action = NULL; | |
1747 | end: | |
1748 | return action; | |
1749 | } | |
1750 | ||
1751 | static const | |
1752 | struct argpar_opt_descr add_trigger_options[] = { | |
1753 | { OPT_HELP, 'h', "help", false }, | |
1754 | { OPT_LIST_OPTIONS, '\0', "list-options", false }, | |
1755 | { OPT_CONDITION, '\0', "condition", false }, | |
1756 | { OPT_ACTION, '\0', "action", false }, | |
1757 | { OPT_ID, '\0', "id", true }, | |
1758 | { OPT_FIRE_ONCE_AFTER, '\0', "fire-once-after", true }, | |
1759 | { OPT_FIRE_EVERY, '\0', "fire-every", true }, | |
1760 | ARGPAR_OPT_DESCR_SENTINEL, | |
1761 | }; | |
1762 | ||
1763 | static | |
1764 | void lttng_actions_destructor(void *p) | |
1765 | { | |
1766 | struct lttng_action *action = p; | |
1767 | ||
1768 | lttng_action_destroy(action); | |
1769 | } | |
1770 | ||
1771 | int cmd_add_trigger(int argc, const char **argv) | |
1772 | { | |
1773 | int ret; | |
1774 | int my_argc = argc - 1; | |
1775 | const char **my_argv = argv + 1; | |
1776 | struct lttng_condition *condition = NULL; | |
1777 | struct lttng_dynamic_pointer_array actions; | |
1778 | struct argpar_state *argpar_state = NULL; | |
1779 | struct argpar_item *argpar_item = NULL; | |
1780 | struct lttng_action *action_group = NULL; | |
1781 | struct lttng_action *action = NULL; | |
1782 | struct lttng_trigger *trigger = NULL; | |
1783 | char *error = NULL; | |
1784 | char *id = NULL; | |
1785 | int i; | |
1786 | char *fire_once_after_str = NULL; | |
1787 | char *fire_every_str = NULL; | |
1788 | ||
1789 | lttng_dynamic_pointer_array_init(&actions, lttng_actions_destructor); | |
1790 | ||
1791 | while (true) { | |
1792 | enum argpar_state_parse_next_status status; | |
1793 | struct argpar_item_opt *item_opt; | |
1794 | int ingested_args; | |
1795 | ||
1796 | argpar_state_destroy(argpar_state); | |
1797 | argpar_state = argpar_state_create(my_argc, my_argv, | |
1798 | add_trigger_options); | |
1799 | if (!argpar_state) { | |
1800 | ERR("Failed to create argpar state."); | |
1801 | goto error; | |
1802 | } | |
1803 | ||
1804 | status = argpar_state_parse_next(argpar_state, &argpar_item, &error); | |
1805 | ||
1806 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1807 | ERR("%s", error); | |
1808 | goto error; | |
1809 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1810 | ERR("%s", error); | |
1811 | goto error; | |
1812 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1813 | break; | |
1814 | } | |
1815 | ||
1816 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1817 | ||
1818 | if (argpar_item->type == ARGPAR_ITEM_TYPE_NON_OPT) { | |
1819 | struct argpar_item_non_opt *item_non_opt = | |
1820 | (struct argpar_item_non_opt *) argpar_item; | |
1821 | ||
1822 | ERR("Unexpected argument `%s`.", | |
1823 | item_non_opt->arg); | |
1824 | goto error; | |
1825 | } | |
1826 | ||
1827 | item_opt = (struct argpar_item_opt *) argpar_item; | |
1828 | ||
1829 | ingested_args = argpar_state_get_ingested_orig_args( | |
1830 | argpar_state); | |
1831 | ||
1832 | my_argc -= ingested_args; | |
1833 | my_argv += ingested_args; | |
1834 | ||
1835 | switch (item_opt->descr->id) { | |
1836 | case OPT_HELP: | |
1837 | SHOW_HELP(); | |
1838 | ret = 0; | |
1839 | goto end; | |
1840 | ||
1841 | case OPT_LIST_OPTIONS: | |
1842 | list_cmd_options_argpar(stdout, add_trigger_options); | |
1843 | ret = 0; | |
1844 | goto end; | |
1845 | ||
1846 | case OPT_CONDITION: | |
1847 | { | |
1848 | if (condition) { | |
1849 | ERR("A --condition was already given."); | |
1850 | goto error; | |
1851 | } | |
1852 | ||
1853 | condition = parse_condition(&my_argc, &my_argv); | |
1854 | if (!condition) { | |
1855 | /* | |
1856 | * An error message was already printed by | |
1857 | * parse_condition. | |
1858 | */ | |
1859 | goto error; | |
1860 | } | |
1861 | ||
1862 | break; | |
1863 | } | |
1864 | ||
1865 | case OPT_ACTION: | |
1866 | { | |
1867 | action = parse_action(&my_argc, &my_argv); | |
1868 | if (!action) { | |
1869 | /* | |
1870 | * An error message was already printed by | |
1871 | * parse_condition. | |
1872 | */ | |
1873 | goto error; | |
1874 | } | |
1875 | ||
1876 | ret = lttng_dynamic_pointer_array_add_pointer( | |
1877 | &actions, action); | |
1878 | if (ret) { | |
1879 | ERR("Failed to add pointer to pointer array."); | |
1880 | goto error; | |
1881 | } | |
1882 | ||
1883 | /* Ownership of the action was transferred to the group. */ | |
1884 | action = NULL; | |
1885 | ||
1886 | break; | |
1887 | } | |
1888 | ||
1889 | case OPT_ID: | |
1890 | { | |
1891 | if (!assign_string(&id, item_opt->arg, "--id")) { | |
1892 | goto error; | |
1893 | } | |
1894 | ||
1895 | break; | |
1896 | } | |
1897 | ||
1898 | case OPT_FIRE_ONCE_AFTER: | |
1899 | { | |
1900 | if (!assign_string(&fire_once_after_str, item_opt->arg, | |
1901 | "--fire-once-after")) { | |
1902 | goto error; | |
1903 | } | |
1904 | break; | |
1905 | } | |
1906 | ||
1907 | case OPT_FIRE_EVERY: | |
1908 | { | |
1909 | if (!assign_string(&fire_every_str, item_opt->arg, | |
1910 | "--fire-every")) { | |
1911 | goto error; | |
1912 | } | |
1913 | break; | |
1914 | } | |
1915 | ||
1916 | default: | |
1917 | abort(); | |
1918 | } | |
1919 | } | |
1920 | ||
1921 | if (!condition) { | |
1922 | ERR("Missing --condition."); | |
1923 | goto error; | |
1924 | } | |
1925 | ||
1926 | if (lttng_dynamic_pointer_array_get_count(&actions) == 0) { | |
1927 | ERR("Need at least one --action."); | |
1928 | goto error; | |
1929 | } | |
1930 | ||
1931 | if (fire_every_str && fire_once_after_str) { | |
1932 | ERR("Can't specify both --fire-once-after and --fire-every."); | |
1933 | goto error; | |
1934 | } | |
1935 | ||
1936 | action_group = lttng_action_group_create(); | |
1937 | if (!action_group) { | |
1938 | goto error; | |
1939 | } | |
1940 | ||
1941 | for (i = 0; i < lttng_dynamic_pointer_array_get_count(&actions); i++) { | |
1942 | enum lttng_action_status status; | |
1943 | ||
1944 | action = lttng_dynamic_pointer_array_steal_pointer(&actions, i); | |
1945 | ||
1946 | status = lttng_action_group_add_action( | |
1947 | action_group, action); | |
1948 | if (status != LTTNG_ACTION_STATUS_OK) { | |
1949 | goto error; | |
1950 | } | |
1951 | ||
1952 | /* Ownership of the action was transferred to the group. */ | |
1953 | action = NULL; | |
1954 | } | |
1955 | ||
1956 | ||
1957 | trigger = lttng_trigger_create(condition, action_group); | |
1958 | if (!trigger) { | |
1959 | goto error; | |
1960 | } | |
1961 | ||
1962 | if (id) { | |
1963 | enum lttng_trigger_status trigger_status = | |
1964 | lttng_trigger_set_name(trigger, id); | |
1965 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
1966 | ERR("Failed to set trigger id."); | |
1967 | goto error; | |
1968 | } | |
1969 | } | |
1970 | ||
1971 | if (fire_once_after_str) { | |
1972 | unsigned long long threshold; | |
1973 | enum lttng_trigger_status trigger_status; | |
1974 | ||
1975 | if (utils_parse_unsigned_long_long(fire_once_after_str, &threshold) != 0) { | |
1976 | ERR("Failed to parse `%s` as an integer.", fire_once_after_str); | |
1977 | goto error; | |
1978 | } | |
1979 | ||
1980 | trigger_status = lttng_trigger_set_firing_policy(trigger, | |
1981 | LTTNG_TRIGGER_FIRE_ONCE_AFTER_N, threshold); | |
1982 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
1983 | ERR("Failed to set trigger's firing policy."); | |
1984 | goto error; | |
1985 | } | |
1986 | } | |
1987 | ||
1988 | if (fire_every_str) { | |
1989 | unsigned long long threshold; | |
1990 | enum lttng_trigger_status trigger_status; | |
1991 | ||
1992 | if (utils_parse_unsigned_long_long(fire_every_str, &threshold) != 0) { | |
1993 | ERR("Failed to parse `%s` as an integer.", fire_every_str); | |
1994 | goto error; | |
1995 | } | |
1996 | ||
1997 | trigger_status = lttng_trigger_set_firing_policy(trigger, | |
1998 | LTTNG_TRIGGER_FIRE_EVERY_N, threshold); | |
1999 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
2000 | ERR("Failed to set trigger's firing policy."); | |
2001 | goto error; | |
2002 | } | |
2003 | } | |
2004 | ||
2005 | ret = lttng_register_trigger(trigger); | |
2006 | if (ret) { | |
2007 | ERR("Failed to register trigger: %s.", | |
2008 | lttng_strerror(ret)); | |
2009 | goto error; | |
2010 | } | |
2011 | ||
2012 | MSG("Trigger registered successfully."); | |
2013 | ||
2014 | goto end; | |
2015 | ||
2016 | error: | |
2017 | ret = 1; | |
2018 | ||
2019 | end: | |
2020 | argpar_state_destroy(argpar_state); | |
2021 | lttng_dynamic_pointer_array_reset(&actions); | |
2022 | lttng_condition_destroy(condition); | |
2023 | lttng_action_destroy(action_group); | |
2024 | lttng_trigger_destroy(trigger); | |
2025 | free(id); | |
2026 | free(fire_once_after_str); | |
2027 | free(fire_every_str); | |
2028 | // TODO: check what else to free | |
2029 | ||
2030 | return ret; | |
2031 | } |