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2463b787 JR |
1 | #include <stdio.h> |
2 | #include <ctype.h> | |
3 | ||
4 | #include "../command.h" | |
5 | #include "../uprobe.h" | |
6 | ||
7 | #include "common/argpar/argpar.h" | |
8 | #include "common/dynamic-array.h" | |
9 | #include "common/string-utils/string-utils.h" | |
10 | #include "common/utils.h" | |
11 | #include "lttng/condition/event-rule.h" | |
12 | #include "lttng/event-internal.h" | |
13 | #include "lttng/event-expr.h" | |
14 | #include <lttng/event-rule/event-rule-internal.h> | |
15 | #include "lttng/event-rule/kprobe.h" | |
16 | #include "lttng/event-rule/syscall.h" | |
17 | #include <lttng/event-rule/tracepoint.h> | |
18 | #include "lttng/event-rule/uprobe.h" | |
19 | #include "lttng/kernel-probe.h" | |
20 | #include "common/filter/filter-ast.h" | |
21 | #include "common/filter/filter-ir.h" | |
22 | #include "common/dynamic-array.h" | |
23 | ||
24 | ||
25 | #if (LTTNG_SYMBOL_NAME_LEN == 256) | |
26 | #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255" | |
27 | #endif | |
28 | ||
29 | #ifdef LTTNG_EMBED_HELP | |
30 | static const char help_msg[] = | |
31 | #include <lttng-add-trigger.1.h> | |
32 | ; | |
33 | #endif | |
34 | ||
35 | enum { | |
36 | OPT_HELP, | |
37 | OPT_LIST_OPTIONS, | |
38 | ||
39 | OPT_CONDITION, | |
40 | OPT_ACTION, | |
41 | OPT_ID, | |
42 | OPT_FIRE_ONCE_AFTER, | |
43 | OPT_FIRE_EVERY, | |
44 | OPT_USER_ID, | |
45 | ||
46 | OPT_ALL, | |
47 | OPT_FILTER, | |
48 | OPT_EXCLUDE, | |
49 | OPT_LOGLEVEL, | |
50 | OPT_LOGLEVEL_ONLY, | |
51 | ||
52 | OPT_USERSPACE, | |
53 | OPT_KERNEL, | |
54 | OPT_LOG4J, | |
55 | OPT_JUL, | |
56 | OPT_PYTHON, | |
57 | ||
58 | OPT_FUNCTION, | |
59 | OPT_PROBE, | |
60 | OPT_USERSPACE_PROBE, | |
61 | OPT_SYSCALL, | |
62 | OPT_TRACEPOINT, | |
63 | ||
64 | OPT_NAME, | |
65 | OPT_MAX_SIZE, | |
66 | OPT_DATA_URL, | |
67 | OPT_CTRL_URL, | |
68 | ||
69 | OPT_CAPTURE, | |
70 | }; | |
71 | ||
72 | static const struct argpar_opt_descr event_rule_opt_descrs[] = { | |
73 | { OPT_ALL, 'a', "all", false }, | |
74 | { OPT_FILTER, 'f', "filter", true }, | |
75 | { OPT_EXCLUDE, 'x', "exclude", true }, | |
76 | { OPT_LOGLEVEL, '\0', "loglevel", true }, | |
77 | { OPT_LOGLEVEL_ONLY, '\0', "loglevel-only", true }, | |
78 | ||
79 | /* Domains */ | |
80 | { OPT_USERSPACE, 'u', "userspace", false }, | |
81 | { OPT_KERNEL, 'k', "kernel", false }, | |
82 | { OPT_LOG4J, 'l', "log4j", false }, | |
83 | { OPT_JUL, 'j', "jul", false }, | |
84 | { OPT_PYTHON, 'p', "python", false }, | |
85 | ||
86 | /* Event rule types */ | |
87 | { OPT_FUNCTION, '\0', "function", true }, | |
88 | { OPT_PROBE, '\0', "probe", true }, | |
89 | { OPT_USERSPACE_PROBE, '\0', "userspace-probe", true }, | |
90 | { OPT_SYSCALL, '\0', "syscall" }, | |
91 | { OPT_TRACEPOINT, '\0', "tracepoint" }, | |
92 | ||
93 | /* Capture descriptor */ | |
94 | { OPT_CAPTURE, '\0', "capture", true }, | |
95 | ||
96 | ARGPAR_OPT_DESCR_SENTINEL | |
97 | }; | |
98 | ||
99 | static | |
100 | bool assign_domain_type(enum lttng_domain_type *dest, | |
101 | enum lttng_domain_type src) | |
102 | { | |
103 | bool ret; | |
104 | ||
105 | if (*dest == LTTNG_DOMAIN_NONE || *dest == src) { | |
106 | *dest = src; | |
107 | ret = true; | |
108 | } else { | |
109 | ERR("Multiple domains specified."); | |
110 | ret = false; | |
111 | } | |
112 | ||
113 | return ret; | |
114 | } | |
115 | ||
116 | static | |
117 | bool assign_event_rule_type(enum lttng_event_rule_type *dest, | |
118 | enum lttng_event_rule_type src) | |
119 | { | |
120 | bool ret; | |
121 | ||
122 | if (*dest == LTTNG_EVENT_RULE_TYPE_UNKNOWN || *dest == src) { | |
123 | *dest = src; | |
124 | ret = true; | |
125 | } else { | |
126 | ERR("Multiple event type not supported."); | |
127 | ret = false; | |
128 | } | |
129 | ||
130 | return ret; | |
131 | } | |
132 | ||
133 | static | |
134 | bool assign_string(char **dest, const char *src, const char *opt_name) | |
135 | { | |
136 | bool ret; | |
137 | ||
138 | if (*dest) { | |
139 | ERR( | |
140 | "Duplicate %s given.", opt_name); | |
141 | goto error; | |
142 | } | |
143 | ||
144 | *dest = strdup(src); | |
145 | if (!*dest) { | |
146 | ERR("Failed to allocate %s string.", opt_name); | |
147 | goto error; | |
148 | } | |
149 | ||
150 | ret = true; | |
151 | goto end; | |
152 | ||
153 | error: | |
154 | ret = false; | |
155 | ||
156 | end: | |
157 | return ret; | |
158 | } | |
159 | ||
160 | /* This is defined in enable_events.c. */ | |
161 | LTTNG_HIDDEN | |
162 | int create_exclusion_list_and_validate(const char *event_name, | |
163 | const char *exclusions_arg, | |
164 | char ***exclusion_list); | |
165 | ||
166 | /* | |
167 | * Parse `str` as a log level in domain `domain_type`. Return -1 if the string | |
168 | * is not recognized as a valid log level. | |
169 | */ | |
170 | static | |
171 | int parse_loglevel_string(const char *str, enum lttng_domain_type domain_type) | |
172 | { | |
173 | ||
174 | switch (domain_type) { | |
175 | case LTTNG_DOMAIN_UST: | |
176 | return loglevel_str_to_value(str); | |
177 | ||
178 | case LTTNG_DOMAIN_LOG4J: | |
179 | return loglevel_log4j_str_to_value(str); | |
180 | ||
181 | case LTTNG_DOMAIN_JUL: | |
182 | return loglevel_jul_str_to_value(str); | |
183 | ||
184 | case LTTNG_DOMAIN_PYTHON: | |
185 | return loglevel_python_str_to_value(str); | |
186 | ||
187 | default: | |
188 | /* Invalid domain type. */ | |
189 | abort(); | |
190 | } | |
191 | } | |
192 | ||
193 | static int parse_kernel_probe_opts(const char *source, | |
194 | struct lttng_kernel_probe_location **location) | |
195 | { | |
196 | int ret = 0; | |
197 | int match; | |
198 | char s_hex[19]; | |
199 | char name[LTTNG_SYMBOL_NAME_LEN]; | |
200 | char *symbol_name = NULL; | |
201 | uint64_t offset; | |
202 | ||
203 | /* Check for symbol+offset */ | |
204 | match = sscanf(source, "%255[^'+']+%18s", name, s_hex); | |
205 | if (match == 2) { | |
206 | if (*s_hex == '\0') { | |
207 | ERR("Kernel probe symbol offset is missing."); | |
208 | goto error; | |
209 | } | |
210 | symbol_name = strndup(name, LTTNG_SYMBOL_NAME_LEN); | |
211 | if (!symbol_name) { | |
212 | ERR("Strndup kernel probe location symbol name."); | |
213 | goto error; | |
214 | } | |
215 | offset = strtoul(s_hex, NULL, 0); | |
216 | ||
217 | *location = lttng_kernel_probe_location_symbol_create( | |
218 | symbol_name, offset); | |
219 | if (!location) { | |
220 | ERR("Symbol kernel probe location creation failed."); | |
221 | goto error; | |
222 | } | |
223 | ||
224 | goto end; | |
225 | } | |
226 | ||
227 | /* Check for symbol */ | |
228 | if (isalpha(name[0]) || name[0] == '_') { | |
229 | match = sscanf(source, | |
230 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API | |
231 | "s", | |
232 | name); | |
233 | if (match == 1) { | |
234 | symbol_name = strndup(name, LTTNG_SYMBOL_NAME_LEN); | |
235 | if (!symbol_name) { | |
236 | ERR("Strndup kernel probe location symbol name."); | |
237 | goto error; | |
238 | } | |
239 | ||
240 | *location = lttng_kernel_probe_location_symbol_create( | |
241 | symbol_name, 0); | |
242 | if (!location) { | |
243 | ERR("Symbol kernel probe location creation failed."); | |
244 | goto error; | |
245 | } | |
246 | ||
247 | goto end; | |
248 | } | |
249 | } | |
250 | ||
251 | /* Check for address */ | |
252 | match = sscanf(source, "%18s", s_hex); | |
253 | if (match > 0) { | |
254 | uint64_t address; | |
255 | if (*s_hex == '\0') { | |
256 | ERR("Invalid kernel probe location address."); | |
257 | goto error; | |
258 | } | |
259 | address = strtoul(s_hex, NULL, 0); | |
260 | *location = lttng_kernel_probe_location_address_create(address); | |
261 | if (!location) { | |
262 | ERR("Symbol kernel probe location creation failed."); | |
263 | goto error; | |
264 | } | |
265 | ||
266 | goto end; | |
267 | } | |
268 | ||
269 | error: | |
270 | /* No match */ | |
271 | ret = -1; | |
272 | *location = NULL; | |
273 | ||
274 | end: | |
275 | free(symbol_name); | |
276 | return ret; | |
277 | } | |
278 | ||
279 | static | |
280 | struct lttng_event_expr *ir_op_load_expr_to_event_expr( | |
281 | struct ir_load_expression *load_exp, const char *capture_str) | |
282 | { | |
283 | struct ir_load_expression_op *load_expr_op = load_exp->child; | |
284 | struct lttng_event_expr *event_expr = NULL; | |
285 | char *provider_name = NULL; | |
286 | ||
287 | switch (load_expr_op->type) { | |
288 | case IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT: | |
289 | { | |
290 | const char *field_name; | |
291 | ||
292 | load_expr_op = load_expr_op->next; | |
293 | assert(load_expr_op); | |
294 | assert(load_expr_op->type == IR_LOAD_EXPRESSION_GET_SYMBOL); | |
295 | field_name = load_expr_op->u.symbol; | |
296 | assert(field_name); | |
297 | ||
298 | event_expr = lttng_event_expr_event_payload_field_create(field_name); | |
299 | if (!event_expr) { | |
300 | fprintf(stderr, "Failed to create payload field event expression.\n"); | |
301 | goto error; | |
302 | } | |
303 | ||
304 | break; | |
305 | } | |
306 | ||
307 | case IR_LOAD_EXPRESSION_GET_CONTEXT_ROOT: | |
308 | { | |
309 | const char *field_name; | |
310 | ||
311 | load_expr_op = load_expr_op->next; | |
312 | assert(load_expr_op); | |
313 | assert(load_expr_op->type == IR_LOAD_EXPRESSION_GET_SYMBOL); | |
314 | field_name = load_expr_op->u.symbol; | |
315 | assert(field_name); | |
316 | ||
317 | event_expr = lttng_event_expr_channel_context_field_create(field_name); | |
318 | if (!event_expr) { | |
319 | fprintf(stderr, "Failed to create channel context field event expression.\n"); | |
320 | goto error; | |
321 | } | |
322 | ||
323 | break; | |
324 | } | |
325 | ||
326 | case IR_LOAD_EXPRESSION_GET_APP_CONTEXT_ROOT: | |
327 | { | |
328 | const char *field_name; | |
329 | const char *colon; | |
330 | const char *type_name; | |
331 | ||
332 | load_expr_op = load_expr_op->next; | |
333 | assert(load_expr_op); | |
334 | assert(load_expr_op->type == IR_LOAD_EXPRESSION_GET_SYMBOL); | |
335 | field_name = load_expr_op->u.symbol; | |
336 | assert(field_name); | |
337 | ||
338 | /* | |
339 | * The field name needs to be of the form PROVIDER:TYPE. We | |
340 | * split it here. | |
341 | */ | |
342 | colon = strchr(field_name, ':'); | |
343 | if (!colon) { | |
344 | fprintf(stderr, "Invalid app-specific context field name: missing colon in `%s`.\n", | |
345 | field_name); | |
346 | goto error; | |
347 | } | |
348 | ||
349 | type_name = colon + 1; | |
350 | if (*type_name == '\0') { | |
351 | fprintf(stderr, | |
352 | "Invalid app-specific context field name: missing type name after colon in `%s`.\n", | |
353 | field_name); | |
354 | goto error; | |
355 | } | |
356 | ||
357 | provider_name = strndup(field_name, colon - field_name); | |
358 | if (!provider_name) { | |
359 | fprintf(stderr, "Failed to allocate string.\n"); | |
360 | goto error; | |
361 | } | |
362 | ||
363 | event_expr = lttng_event_expr_app_specific_context_field_create( | |
364 | provider_name, type_name); | |
365 | if (!event_expr) { | |
366 | fprintf(stderr, | |
367 | "Failed to create app-specific context field event expression.\n"); | |
368 | goto error; | |
369 | } | |
370 | ||
371 | break; | |
372 | } | |
373 | ||
374 | default: | |
375 | fprintf(stderr, "%s: unexpected load expr type %d.\n", | |
376 | __func__, load_expr_op->type); | |
377 | abort(); | |
378 | } | |
379 | ||
380 | load_expr_op = load_expr_op->next; | |
381 | ||
382 | /* There may be a single array index after that. */ | |
383 | if (load_expr_op->type == IR_LOAD_EXPRESSION_GET_INDEX) { | |
384 | uint64_t index = load_expr_op->u.index; | |
385 | struct lttng_event_expr *index_event_expr; | |
386 | ||
387 | index_event_expr = lttng_event_expr_array_field_element_create(event_expr, index); | |
388 | if (!index_event_expr) { | |
389 | fprintf(stderr, "Failed to create array field element event expression.\n"); | |
390 | goto error; | |
391 | } | |
392 | ||
393 | event_expr = index_event_expr; | |
394 | load_expr_op = load_expr_op->next; | |
395 | } | |
396 | ||
397 | switch (load_expr_op->type) { | |
398 | case IR_LOAD_EXPRESSION_LOAD_FIELD: | |
399 | /* | |
400 | * This is what we expect, IR_LOAD_EXPRESSION_LOAD_FIELD is | |
401 | * always found at the end of the chain. | |
402 | */ | |
403 | break; | |
404 | case IR_LOAD_EXPRESSION_GET_SYMBOL: | |
405 | fprintf(stderr, "Error: While parsing expression `%s`: Capturing subfields is not supported.\n", | |
406 | capture_str); | |
407 | goto error; | |
408 | ||
409 | default: | |
410 | fprintf(stderr, "%s: unexpected load expression operator %s.\n", | |
411 | __func__, ir_load_expression_type_str(load_expr_op->type)); | |
412 | abort(); | |
413 | } | |
414 | ||
415 | goto end; | |
416 | ||
417 | error: | |
418 | lttng_event_expr_destroy(event_expr); | |
419 | event_expr = NULL; | |
420 | ||
421 | end: | |
422 | free(provider_name); | |
423 | ||
424 | return event_expr; | |
425 | } | |
426 | ||
427 | static | |
428 | struct lttng_event_expr *ir_op_load_to_event_expr(struct ir_op *ir, | |
429 | const char *capture_str) | |
430 | { | |
431 | struct lttng_event_expr *event_expr = NULL; | |
432 | ||
433 | assert(ir->op == IR_OP_LOAD); | |
434 | ||
435 | switch (ir->data_type) { | |
436 | case IR_DATA_EXPRESSION: | |
437 | { | |
438 | struct ir_load_expression *ir_load_expr = ir->u.load.u.expression; | |
439 | event_expr = ir_op_load_expr_to_event_expr(ir_load_expr, capture_str); | |
440 | break; | |
441 | } | |
442 | ||
443 | default: | |
444 | fprintf(stderr, "%s: unexpected data type: %s.\n", __func__, | |
445 | ir_data_type_str(ir->data_type)); | |
446 | abort(); | |
447 | } | |
448 | ||
449 | return event_expr; | |
450 | } | |
451 | ||
452 | static | |
453 | struct lttng_event_expr *ir_op_root_to_event_expr(struct ir_op *ir, | |
454 | const char *capture_str) | |
455 | { | |
456 | struct lttng_event_expr *event_expr = NULL; | |
457 | ||
458 | assert(ir->op == IR_OP_ROOT); | |
459 | ir = ir->u.root.child; | |
460 | ||
461 | switch (ir->op) { | |
462 | case IR_OP_LOAD: | |
463 | event_expr = ir_op_load_to_event_expr(ir, capture_str); | |
464 | break; | |
465 | ||
466 | case IR_OP_BINARY: | |
467 | fprintf(stderr, "Error: While parsing expression `%s`: Binary operators are not allowed in capture expressions.\n", | |
468 | capture_str); | |
469 | break; | |
470 | ||
471 | case IR_OP_UNARY: | |
472 | fprintf(stderr, "Error: While parsing expression `%s`: Unary operators are not allowed in capture expressions.\n", | |
473 | capture_str); | |
474 | break; | |
475 | ||
476 | case IR_OP_LOGICAL: | |
477 | fprintf(stderr, "Error: While parsing expression `%s`: Logical operators are not allowed in capture expressions.\n", | |
478 | capture_str); | |
479 | break; | |
480 | ||
481 | default: | |
482 | fprintf(stderr, "%s: unexpected IR op type: %s.\n", __func__, | |
483 | ir_op_type_str(ir->op)); | |
484 | abort(); | |
485 | } | |
486 | ||
487 | return event_expr; | |
488 | } | |
489 | ||
490 | static | |
491 | void destroy_event_expr(void *ptr) | |
492 | { | |
493 | lttng_event_expr_destroy(ptr); | |
494 | } | |
495 | ||
496 | struct parse_event_rule_res { | |
497 | /* Owned by this */ | |
498 | struct lttng_event_rule *er; | |
499 | ||
500 | /* Array of `struct lttng_event_expr *` */ | |
501 | struct lttng_dynamic_pointer_array capture_descriptors; | |
502 | }; | |
503 | ||
504 | static | |
505 | struct parse_event_rule_res parse_event_rule(int *argc, const char ***argv) | |
506 | { | |
507 | enum lttng_domain_type domain_type = LTTNG_DOMAIN_NONE; | |
508 | enum lttng_event_rule_type event_rule_type = LTTNG_EVENT_RULE_TYPE_UNKNOWN; | |
509 | struct argpar_state *state; | |
510 | struct argpar_item *item = NULL; | |
511 | char *error = NULL; | |
512 | int consumed_args = -1; | |
513 | struct lttng_kernel_probe_location *kernel_probe_location = NULL; | |
514 | struct lttng_userspace_probe_location *userspace_probe_location = NULL; | |
515 | struct parse_event_rule_res res = { 0 }; | |
516 | struct lttng_event_expr *event_expr = NULL; | |
517 | struct filter_parser_ctx *parser_ctx = NULL; | |
518 | ||
519 | /* Was the -a/--all flag provided? */ | |
520 | bool all_events = false; | |
521 | ||
522 | /* Tracepoint name (non-option argument) */ | |
523 | const char *tracepoint_name = NULL; | |
524 | ||
525 | /* Holds the argument of --probe / --userspace-probe. */ | |
526 | char *source = NULL; | |
527 | ||
528 | /* Filter */ | |
529 | char *filter = NULL; | |
530 | ||
531 | /* Exclude */ | |
532 | char *exclude = NULL; | |
533 | char **exclusion_list = NULL; | |
534 | ||
535 | /* Log level */ | |
536 | char *loglevel_str = NULL; | |
537 | bool loglevel_only = false; | |
538 | ||
539 | lttng_dynamic_pointer_array_init(&res.capture_descriptors, | |
540 | destroy_event_expr); | |
541 | state = argpar_state_create(*argc, *argv, event_rule_opt_descrs); | |
542 | if (!state) { | |
543 | ERR("Failed to allocate an argpar state."); | |
544 | goto error; | |
545 | } | |
546 | ||
547 | while (true) { | |
548 | enum argpar_state_parse_next_status status; | |
549 | ||
550 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
551 | status = argpar_state_parse_next(state, &item, &error); | |
552 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
553 | ERR("%s", error); | |
554 | goto error; | |
555 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
556 | /* Just stop parsing here. */ | |
557 | break; | |
558 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
559 | break; | |
560 | } | |
561 | ||
562 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
563 | ||
564 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
565 | struct argpar_item_opt *item_opt = | |
566 | (struct argpar_item_opt *) item; | |
567 | ||
568 | switch (item_opt->descr->id) { | |
569 | /* Domains */ | |
570 | case OPT_USERSPACE: | |
571 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_UST)) { | |
572 | goto error; | |
573 | } | |
574 | break; | |
575 | ||
576 | case OPT_KERNEL: | |
577 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_KERNEL)) { | |
578 | goto error; | |
579 | } | |
580 | break; | |
581 | ||
582 | case OPT_LOG4J: | |
583 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_LOG4J)) { | |
584 | goto error; | |
585 | } | |
586 | break; | |
587 | ||
588 | case OPT_JUL: | |
589 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_JUL)) { | |
590 | goto error; | |
591 | } | |
592 | break; | |
593 | ||
594 | case OPT_PYTHON: | |
595 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_PYTHON)) { | |
596 | goto error; | |
597 | } | |
598 | break; | |
599 | ||
600 | /* Event rule types */ | |
601 | case OPT_FUNCTION: | |
602 | if (!assign_event_rule_type(&event_rule_type, | |
603 | LTTNG_EVENT_RULE_TYPE_KRETPROBE)) { | |
604 | goto error; | |
605 | } | |
606 | break; | |
607 | ||
608 | case OPT_PROBE: | |
609 | if (!assign_event_rule_type(&event_rule_type, | |
610 | LTTNG_EVENT_RULE_TYPE_KPROBE)) { | |
611 | goto error; | |
612 | } | |
613 | ||
614 | if (!assign_string(&source, item_opt->arg, "source")) { | |
615 | goto error; | |
616 | } | |
617 | ||
618 | break; | |
619 | ||
620 | case OPT_USERSPACE_PROBE: | |
621 | if (!assign_event_rule_type(&event_rule_type, | |
622 | LTTNG_EVENT_RULE_TYPE_UPROBE)) { | |
623 | goto error; | |
624 | } | |
625 | ||
626 | if (!assign_string(&source, item_opt->arg, "source")) { | |
627 | goto error; | |
628 | } | |
629 | break; | |
630 | ||
631 | case OPT_SYSCALL: | |
632 | if (!assign_event_rule_type(&event_rule_type, | |
633 | LTTNG_EVENT_RULE_TYPE_SYSCALL)) { | |
634 | goto error; | |
635 | } | |
636 | break; | |
637 | ||
638 | case OPT_TRACEPOINT: | |
639 | if (!assign_event_rule_type(&event_rule_type, | |
640 | LTTNG_EVENT_RULE_TYPE_TRACEPOINT)) { | |
641 | goto error; | |
642 | } | |
643 | break; | |
644 | ||
645 | case OPT_ALL: | |
646 | all_events = true; | |
647 | break; | |
648 | ||
649 | case OPT_FILTER: | |
650 | if (!assign_string(&filter, item_opt->arg, "--filter/-f")) { | |
651 | goto error; | |
652 | } | |
653 | break; | |
654 | ||
655 | case OPT_EXCLUDE: | |
656 | if (!assign_string(&exclude, item_opt->arg, "--exclude/-x")) { | |
657 | goto error; | |
658 | } | |
659 | break; | |
660 | ||
661 | case OPT_LOGLEVEL: | |
662 | case OPT_LOGLEVEL_ONLY: | |
663 | if (!assign_string(&loglevel_str, item_opt->arg, "--loglevel/--loglevel-only")) { | |
664 | goto error; | |
665 | } | |
666 | ||
667 | loglevel_only = item_opt->descr->id == OPT_LOGLEVEL_ONLY; | |
668 | break; | |
669 | ||
670 | case OPT_CAPTURE: | |
671 | { | |
672 | const char *capture_str = item_opt->arg; | |
673 | int ret; | |
674 | ||
675 | ret = filter_parser_ctx_create_from_filter_expression( | |
676 | capture_str, &parser_ctx); | |
677 | if (ret) { | |
678 | fprintf(stderr, "Failed to parse capture expression `%s`.\n", capture_str); | |
679 | goto error; | |
680 | } | |
681 | ||
682 | event_expr = ir_op_root_to_event_expr(parser_ctx->ir_root, | |
683 | capture_str); | |
684 | if (!event_expr) { | |
685 | /* ir_op_root_to_event_expr has printed an error message. */ | |
686 | goto error; | |
687 | } | |
688 | ||
689 | ret = lttng_dynamic_pointer_array_add_pointer( | |
690 | &res.capture_descriptors, | |
691 | event_expr); | |
692 | if (ret) { | |
693 | goto error; | |
694 | } | |
695 | ||
696 | /* The ownership of event expression was transferred to the dynamic array. */ | |
697 | event_expr = NULL; | |
698 | ||
699 | break; | |
700 | } | |
701 | ||
702 | default: | |
703 | abort(); | |
704 | } | |
705 | } else { | |
706 | struct argpar_item_non_opt *item_non_opt = | |
707 | (struct argpar_item_non_opt *) item; | |
708 | ||
709 | /* | |
710 | * Don't accept two non-option arguments/tracepoint | |
711 | * names. | |
712 | */ | |
713 | if (tracepoint_name) { | |
714 | ERR( | |
715 | "Unexpected argument: %s", | |
716 | item_non_opt->arg); | |
717 | goto error; | |
718 | } | |
719 | ||
720 | tracepoint_name = item_non_opt->arg; | |
721 | } | |
722 | } | |
723 | ||
724 | if (event_rule_type == LTTNG_EVENT_RULE_TYPE_UNKNOWN) { | |
725 | event_rule_type = LTTNG_EVENT_RULE_TYPE_TRACEPOINT; | |
726 | } | |
727 | ||
728 | /* | |
729 | * Option -a is applicable to event rules of type tracepoint and | |
730 | * syscall, and it is equivalent to using "*" as the tracepoint name. | |
731 | */ | |
732 | if (all_events) { | |
733 | switch (event_rule_type) { | |
734 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
735 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
736 | break; | |
737 | default: | |
738 | ERR("Can't use -a/--all with event rule of type %s.", | |
739 | lttng_event_rule_type_str(event_rule_type)); | |
740 | goto error; | |
741 | } | |
742 | ||
743 | if (tracepoint_name) { | |
744 | ERR("Can't provide a tracepoint name with -a/--all."); | |
745 | goto error; | |
746 | } | |
747 | ||
748 | /* In which case, it's equivalent to tracepoint name "*". */ | |
749 | tracepoint_name = "*"; | |
750 | } | |
751 | ||
752 | /* | |
753 | * A tracepoint name (or -a, for the event rule types that accept it) | |
754 | * is required. | |
755 | */ | |
756 | if (!tracepoint_name) { | |
757 | ERR("Need to provide either a tracepoint name or -a/--all."); | |
758 | goto error; | |
759 | } | |
760 | ||
761 | /* | |
762 | * We don't support multiple tracepoint names for now. | |
763 | */ | |
764 | if (strchr(tracepoint_name, ',')) { | |
765 | ERR("multiple tracepoint names are not supported at the moment."); | |
766 | goto error; | |
767 | } | |
768 | ||
769 | /* | |
770 | * Update *argc and *argv so our caller can keep parsing what follows. | |
771 | */ | |
772 | consumed_args = argpar_state_get_ingested_orig_args(state); | |
773 | assert(consumed_args >= 0); | |
774 | *argc -= consumed_args; | |
775 | *argv += consumed_args; | |
776 | ||
777 | /* Need to specify a domain. */ | |
778 | if (domain_type == LTTNG_DOMAIN_NONE) { | |
779 | ERR("Please specify a domain (-k/-u/-j)."); | |
780 | goto error; | |
781 | } | |
782 | ||
783 | /* Validate event rule type against domain. */ | |
784 | switch (event_rule_type) { | |
785 | case LTTNG_EVENT_RULE_TYPE_KPROBE: | |
786 | case LTTNG_EVENT_RULE_TYPE_KRETPROBE: | |
787 | case LTTNG_EVENT_RULE_TYPE_UPROBE: | |
788 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
789 | if (domain_type != LTTNG_DOMAIN_KERNEL) { | |
790 | ERR("Event type not available for user-space tracing"); | |
791 | goto error; | |
792 | } | |
793 | break; | |
794 | ||
795 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
796 | break; | |
797 | ||
798 | default: | |
799 | abort(); | |
800 | } | |
801 | ||
802 | /* | |
803 | * Adding a filter to a probe, function or userspace-probe would be | |
804 | * denied by the kernel tracer as it's not supported at the moment. We | |
805 | * do an early check here to warn the user. | |
806 | */ | |
807 | if (filter && domain_type == LTTNG_DOMAIN_KERNEL) { | |
808 | switch (event_rule_type) { | |
809 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
810 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
811 | break; | |
812 | default: | |
813 | ERR("Filter expressions are not supported for %s events", | |
814 | lttng_event_rule_type_str(event_rule_type)); | |
815 | goto error; | |
816 | } | |
817 | } | |
818 | ||
819 | /* If --exclude/-x was passed, split it into an exclusion list. */ | |
820 | if (exclude) { | |
821 | if (domain_type != LTTNG_DOMAIN_UST) { | |
822 | ERR("Event name exclusions are not yet implemented for %s events", | |
823 | get_domain_str(domain_type)); | |
824 | goto error; | |
825 | } | |
826 | ||
827 | ||
828 | if (create_exclusion_list_and_validate(tracepoint_name, exclude, | |
829 | &exclusion_list) != 0) { | |
830 | ERR("Failed to create exclusion list."); | |
831 | goto error; | |
832 | } | |
833 | } | |
834 | ||
835 | if (loglevel_str && event_rule_type != LTTNG_EVENT_RULE_TYPE_TRACEPOINT) { | |
836 | ERR("Log levels are only application to tracepoint event rules."); | |
837 | goto error; | |
838 | } | |
839 | ||
840 | /* Finally, create the event rule object. */ | |
841 | switch (event_rule_type) { | |
842 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
843 | { | |
844 | enum lttng_event_rule_status event_rule_status; | |
845 | ||
846 | res.er = lttng_event_rule_tracepoint_create(domain_type); | |
847 | if (!res.er) { | |
848 | ERR("Failed to create tracepoint event rule."); | |
849 | goto error; | |
850 | } | |
851 | ||
852 | /* Set pattern. */ | |
853 | event_rule_status = | |
854 | lttng_event_rule_tracepoint_set_pattern(res.er, tracepoint_name); | |
855 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
856 | ERR("Failed to set tracepoint pattern."); | |
857 | goto error; | |
858 | } | |
859 | ||
860 | /* Set filter. */ | |
861 | if (filter) { | |
862 | event_rule_status = | |
863 | lttng_event_rule_tracepoint_set_filter( | |
864 | res.er, filter); | |
865 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
866 | ERR("Failed to set tracepoint filter expression."); | |
867 | goto error; | |
868 | } | |
869 | } | |
870 | ||
871 | /* Set exclusion list. */ | |
872 | if (exclusion_list) { | |
873 | int n; | |
874 | ||
875 | for (n = 0; exclusion_list[n]; n++) { | |
876 | event_rule_status = lttng_event_rule_tracepoint_add_exclusion( | |
877 | res.er, | |
878 | exclusion_list[n]); | |
879 | if (event_rule_status != | |
880 | LTTNG_EVENT_RULE_STATUS_OK) { | |
881 | ERR("Failed to set tracepoint exclusion list."); | |
882 | goto error; | |
883 | } | |
884 | } | |
885 | } | |
886 | ||
887 | if (loglevel_str) { | |
888 | int loglevel; | |
889 | ||
890 | if (domain_type == LTTNG_DOMAIN_KERNEL) { | |
891 | ERR("Log levels are not supported by the kernel tracer."); | |
892 | goto error; | |
893 | } | |
894 | ||
895 | loglevel = parse_loglevel_string( | |
896 | loglevel_str, domain_type); | |
897 | if (loglevel < 0) { | |
898 | ERR("Failed to parse `%s` as a log level.", loglevel_str); | |
899 | goto error; | |
900 | } | |
901 | ||
902 | if (loglevel_only) { | |
903 | event_rule_status = | |
904 | lttng_event_rule_tracepoint_set_log_level( | |
905 | res.er, loglevel); | |
906 | } else { | |
907 | event_rule_status = | |
908 | lttng_event_rule_tracepoint_set_log_level_range_lower_bound( | |
909 | res.er, loglevel); | |
910 | } | |
911 | ||
912 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
913 | ERR("Failed to set log level."); | |
914 | goto error; | |
915 | } | |
916 | } | |
917 | ||
918 | break; | |
919 | } | |
920 | ||
921 | case LTTNG_EVENT_RULE_TYPE_KPROBE: | |
922 | { | |
923 | int ret; | |
924 | enum lttng_event_rule_status event_rule_status; | |
925 | ||
926 | res.er = lttng_event_rule_kprobe_create(); | |
927 | if (!res.er) { | |
928 | ERR("Failed to create kprobe event rule."); | |
929 | goto error; | |
930 | } | |
931 | ||
932 | ret = parse_kernel_probe_opts(source, &kernel_probe_location); | |
933 | if (ret) { | |
934 | ERR("Failed to parse kernel probe location."); | |
935 | goto error; | |
936 | } | |
937 | ||
938 | event_rule_status = lttng_event_rule_kprobe_set_name(res.er, tracepoint_name); | |
939 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
940 | ERR("Failed to set kprobe event rule's name."); | |
941 | goto error; | |
942 | } | |
943 | ||
944 | assert(kernel_probe_location); | |
945 | event_rule_status = lttng_event_rule_kprobe_set_location(res.er, kernel_probe_location); | |
946 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
947 | ERR("Failed to set kprobe event rule's location."); | |
948 | goto error; | |
949 | } | |
950 | ||
951 | break; | |
952 | } | |
953 | ||
954 | case LTTNG_EVENT_RULE_TYPE_UPROBE: | |
955 | { | |
956 | int ret; | |
957 | enum lttng_event_rule_status event_rule_status; | |
958 | ||
959 | ret = parse_userspace_probe_opts(source, &userspace_probe_location); | |
960 | if (ret) { | |
961 | ERR("Failed to parse userspace probe location."); | |
962 | goto error; | |
963 | } | |
964 | ||
965 | res.er = lttng_event_rule_uprobe_create(); | |
966 | if (!res.er) { | |
967 | ERR("Failed to create userspace probe event rule."); | |
968 | goto error; | |
969 | } | |
970 | ||
971 | event_rule_status = lttng_event_rule_uprobe_set_location(res.er, userspace_probe_location); | |
972 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
973 | ERR("Failed to set userspace probe event rule's location."); | |
974 | goto error; | |
975 | } | |
976 | ||
977 | event_rule_status = lttng_event_rule_uprobe_set_name(res.er, tracepoint_name); | |
978 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
979 | ERR("Failed to set userspace probe event rule's name."); | |
980 | goto error; | |
981 | } | |
982 | ||
983 | break; | |
984 | } | |
985 | ||
986 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
987 | { | |
988 | enum lttng_event_rule_status event_rule_status; | |
989 | ||
990 | res.er = lttng_event_rule_syscall_create(); | |
991 | if (!res.er) { | |
992 | ERR("Failed to create syscall event rule."); | |
993 | goto error; | |
994 | } | |
995 | ||
996 | event_rule_status = lttng_event_rule_syscall_set_pattern(res.er, tracepoint_name); | |
997 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
998 | ERR("Failed to set syscall event rule's pattern."); | |
999 | goto error; | |
1000 | } | |
1001 | ||
1002 | if (filter) { | |
1003 | event_rule_status = lttng_event_rule_syscall_set_filter( | |
1004 | res.er, filter); | |
1005 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1006 | ERR("Failed to set syscall event rule's filter expression."); | |
1007 | goto error; | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | break; | |
1012 | } | |
1013 | ||
1014 | default: | |
1015 | ERR("%s: I don't support event rules of type `%s` at the moment.", __func__, | |
1016 | lttng_event_rule_type_str(event_rule_type)); | |
1017 | goto error; | |
1018 | } | |
1019 | ||
1020 | goto end; | |
1021 | ||
1022 | error: | |
1023 | lttng_event_rule_destroy(res.er); | |
1024 | res.er = NULL; | |
1025 | lttng_dynamic_pointer_array_reset(&res.capture_descriptors); | |
1026 | ||
1027 | end: | |
1028 | if (parser_ctx) { | |
1029 | filter_parser_ctx_free(parser_ctx); | |
1030 | } | |
1031 | ||
1032 | lttng_event_expr_destroy(event_expr); | |
1033 | argpar_item_destroy(item); | |
1034 | free(error); | |
1035 | argpar_state_destroy(state); | |
1036 | free(filter); | |
1037 | free(exclude); | |
1038 | free(loglevel_str); | |
1039 | strutils_free_null_terminated_array_of_strings(exclusion_list); | |
1040 | lttng_kernel_probe_location_destroy(kernel_probe_location); | |
1041 | lttng_userspace_probe_location_destroy(userspace_probe_location); | |
1042 | return res; | |
1043 | } | |
1044 | ||
1045 | static | |
1046 | struct lttng_condition *handle_condition_event(int *argc, const char ***argv) | |
1047 | { | |
1048 | struct parse_event_rule_res res; | |
1049 | struct lttng_condition *c; | |
1050 | size_t i; | |
1051 | ||
1052 | res = parse_event_rule(argc, argv); | |
1053 | if (!res.er) { | |
1054 | c = NULL; | |
1055 | goto error; | |
1056 | } | |
1057 | ||
1058 | c = lttng_condition_event_rule_create(res.er); | |
1059 | if (!c) { | |
1060 | goto error; | |
1061 | } | |
1062 | ||
1063 | for (i = 0; i < lttng_dynamic_pointer_array_get_count(&res.capture_descriptors); | |
1064 | i++) { | |
1065 | enum lttng_condition_status status; | |
1066 | struct lttng_event_expr **expr = | |
1067 | lttng_dynamic_array_get_element( | |
1068 | &res.capture_descriptors.array, i); | |
1069 | ||
1070 | assert(expr); | |
1071 | assert(*expr); | |
1072 | status = lttng_condition_event_rule_append_capture_descriptor( | |
1073 | c, *expr); | |
1074 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
1075 | if (status == LTTNG_CONDITION_STATUS_UNSUPPORTED) { | |
1076 | ERR("The capture feature is unsupported by the event-rule type"); | |
1077 | } | |
1078 | goto error; | |
1079 | } | |
1080 | ||
1081 | /* Ownership of event expression moved to `c` */ | |
1082 | *expr = NULL; | |
1083 | } | |
1084 | ||
1085 | goto end; | |
1086 | ||
1087 | error: | |
1088 | lttng_condition_destroy(c); | |
1089 | c = NULL; | |
1090 | ||
1091 | end: | |
1092 | lttng_dynamic_pointer_array_reset(&res.capture_descriptors); | |
1093 | lttng_event_rule_destroy(res.er); | |
1094 | return c; | |
1095 | } | |
1096 | ||
1097 | static | |
1098 | struct lttng_condition *handle_condition_session_consumed_size(int *argc, const char ***argv) | |
1099 | { | |
1100 | struct lttng_condition *cond = NULL; | |
1101 | struct argpar_state *state = NULL; | |
1102 | struct argpar_item *item = NULL; | |
1103 | const char *threshold_arg = NULL; | |
1104 | const char *session_name_arg = NULL; | |
1105 | uint64_t threshold; | |
1106 | char *error = NULL; | |
1107 | enum lttng_condition_status condition_status; | |
1108 | ||
1109 | state = argpar_state_create(*argc, *argv, event_rule_opt_descrs); | |
1110 | if (!state) { | |
1111 | ERR("Failed to allocate an argpar state."); | |
1112 | goto error; | |
1113 | } | |
1114 | ||
1115 | while (true) { | |
1116 | enum argpar_state_parse_next_status status; | |
1117 | ||
1118 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1119 | status = argpar_state_parse_next(state, &item, &error); | |
1120 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1121 | ERR("%s", error); | |
1122 | goto error; | |
1123 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1124 | /* Just stop parsing here. */ | |
1125 | break; | |
1126 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1127 | break; | |
1128 | } | |
1129 | ||
1130 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1131 | ||
1132 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
1133 | struct argpar_item_opt *item_opt = | |
1134 | (struct argpar_item_opt *) item; | |
1135 | ||
1136 | switch (item_opt->descr->id) { | |
1137 | default: | |
1138 | abort(); | |
1139 | } | |
1140 | } else { | |
1141 | struct argpar_item_non_opt *item_non_opt; | |
1142 | ||
1143 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1144 | ||
1145 | item_non_opt = (struct argpar_item_non_opt *) item; | |
1146 | ||
1147 | switch (item_non_opt->non_opt_index) { | |
1148 | case 0: | |
1149 | session_name_arg = item_non_opt->arg; | |
1150 | break; | |
1151 | case 1: | |
1152 | threshold_arg = item_non_opt->arg; | |
1153 | break; | |
1154 | default: | |
1155 | ERR("Unexpected argument `%s`.", | |
1156 | item_non_opt->arg); | |
1157 | goto error; | |
1158 | } | |
1159 | } | |
1160 | } | |
1161 | ||
1162 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1163 | *argv += argpar_state_get_ingested_orig_args(state); | |
1164 | ||
1165 | if (!session_name_arg) { | |
1166 | ERR("Missing session name argument."); | |
1167 | goto error; | |
1168 | } | |
1169 | ||
1170 | if (!threshold_arg) { | |
1171 | ERR("Missing threshold argument."); | |
1172 | goto error; | |
1173 | } | |
1174 | ||
1175 | if (utils_parse_size_suffix(threshold_arg, &threshold) != 0) { | |
1176 | ERR("Failed to parse `%s` as a size.", threshold_arg); | |
1177 | goto error; | |
1178 | } | |
1179 | ||
1180 | cond = lttng_condition_session_consumed_size_create(); | |
1181 | if (!cond) { | |
1182 | ERR("Failed to allocate a session consumed size condition."); | |
1183 | goto error; | |
1184 | } | |
1185 | ||
1186 | condition_status = lttng_condition_session_consumed_size_set_session_name( | |
1187 | cond, session_name_arg); | |
1188 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
1189 | ERR("Failed to set session consumed size condition session name."); | |
1190 | goto error; | |
1191 | } | |
1192 | ||
1193 | ||
1194 | condition_status = lttng_condition_session_consumed_size_set_threshold( | |
1195 | cond, threshold); | |
1196 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
1197 | ERR("Failed to set session consumed size condition threshold."); | |
1198 | goto error; | |
1199 | } | |
1200 | ||
1201 | goto end; | |
1202 | ||
1203 | error: | |
1204 | lttng_condition_destroy(cond); | |
1205 | cond = NULL; | |
1206 | ||
1207 | end: | |
1208 | argpar_state_destroy(state); | |
1209 | argpar_item_destroy(item); | |
1210 | free(error); | |
1211 | return cond; | |
1212 | } | |
1213 | ||
1214 | static | |
1215 | struct lttng_condition *handle_condition_buffer_usage_high(int *argc, const char ***argv) | |
1216 | { | |
1217 | struct lttng_condition *cond = NULL; | |
1218 | struct argpar_state *state = NULL; | |
1219 | struct argpar_item *item = NULL; | |
1220 | const char *threshold_arg = NULL; | |
1221 | const char *session_name_arg = NULL; | |
1222 | uint64_t threshold; | |
1223 | char *error = NULL; | |
1224 | enum lttng_condition_status condition_status; | |
1225 | ||
1226 | state = argpar_state_create(*argc, *argv, event_rule_opt_descrs); | |
1227 | if (!state) { | |
1228 | ERR("Failed to allocate an argpar state."); | |
1229 | goto error; | |
1230 | } | |
1231 | ||
1232 | while (true) { | |
1233 | enum argpar_state_parse_next_status status; | |
1234 | ||
1235 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1236 | status = argpar_state_parse_next(state, &item, &error); | |
1237 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1238 | ERR("%s", error); | |
1239 | goto error; | |
1240 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1241 | /* Just stop parsing here. */ | |
1242 | break; | |
1243 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1244 | break; | |
1245 | } | |
1246 | ||
1247 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1248 | ||
1249 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
1250 | struct argpar_item_opt *item_opt = | |
1251 | (struct argpar_item_opt *) item; | |
1252 | ||
1253 | switch (item_opt->descr->id) { | |
1254 | default: | |
1255 | abort(); | |
1256 | } | |
1257 | } else { | |
1258 | struct argpar_item_non_opt *item_non_opt; | |
1259 | ||
1260 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1261 | ||
1262 | item_non_opt = (struct argpar_item_non_opt *) item; | |
1263 | ||
1264 | switch (item_non_opt->non_opt_index) { | |
1265 | case 0: | |
1266 | session_name_arg = item_non_opt->arg; | |
1267 | break; | |
1268 | case 1: | |
1269 | threshold_arg = item_non_opt->arg; | |
1270 | break; | |
1271 | default: | |
1272 | ERR("Unexpected argument `%s`.", | |
1273 | item_non_opt->arg); | |
1274 | goto error; | |
1275 | } | |
1276 | } | |
1277 | } | |
1278 | ||
1279 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1280 | *argv += argpar_state_get_ingested_orig_args(state); | |
1281 | ||
1282 | if (!session_name_arg) { | |
1283 | ERR("Missing session name argument."); | |
1284 | goto error; | |
1285 | } | |
1286 | ||
1287 | if (!threshold_arg) { | |
1288 | ERR("Missing threshold argument."); | |
1289 | goto error; | |
1290 | } | |
1291 | ||
1292 | if (utils_parse_size_suffix(threshold_arg, &threshold) != 0) { | |
1293 | ERR("Failed to parse `%s` as a size.", threshold_arg); | |
1294 | goto error; | |
1295 | } | |
1296 | ||
1297 | cond = lttng_condition_session_consumed_size_create(); | |
1298 | if (!cond) { | |
1299 | ERR("Failed to allocate a session consumed size condition."); | |
1300 | goto error; | |
1301 | } | |
1302 | ||
1303 | condition_status = lttng_condition_session_consumed_size_set_session_name( | |
1304 | cond, session_name_arg); | |
1305 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
1306 | ERR("Failed to set session consumed size condition session name."); | |
1307 | goto error; | |
1308 | } | |
1309 | ||
1310 | condition_status = lttng_condition_session_consumed_size_set_threshold( | |
1311 | cond, threshold); | |
1312 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
1313 | ERR("Failed to set session consumed size condition threshold."); | |
1314 | goto error; | |
1315 | } | |
1316 | ||
1317 | goto end; | |
1318 | ||
1319 | error: | |
1320 | lttng_condition_destroy(cond); | |
1321 | cond = NULL; | |
1322 | ||
1323 | end: | |
1324 | argpar_state_destroy(state); | |
1325 | argpar_item_destroy(item); | |
1326 | free(error); | |
1327 | return cond; | |
1328 | } | |
1329 | ||
1330 | static | |
1331 | struct lttng_condition *handle_condition_buffer_usage_low(int *argc, const char ***argv) | |
1332 | { | |
1333 | return NULL; | |
1334 | } | |
1335 | ||
1336 | static | |
1337 | struct lttng_condition *handle_condition_session_rotation_ongoing(int *argc, const char ***argv) | |
1338 | { | |
1339 | return NULL; | |
1340 | } | |
1341 | ||
1342 | static | |
1343 | struct lttng_condition *handle_condition_session_rotation_completed(int *argc, const char ***argv) | |
1344 | { | |
1345 | return NULL; | |
1346 | } | |
1347 | ||
1348 | struct condition_descr { | |
1349 | const char *name; | |
1350 | struct lttng_condition *(*handler) (int *argc, const char ***argv); | |
1351 | }; | |
1352 | ||
1353 | static const | |
1354 | struct condition_descr condition_descrs[] = { | |
1355 | { "on-event", handle_condition_event }, | |
1356 | { "on-session-consumed-size", handle_condition_session_consumed_size }, | |
1357 | { "on-buffer-usage-high", handle_condition_buffer_usage_high }, | |
1358 | { "on-buffer-usage-low", handle_condition_buffer_usage_low }, | |
1359 | { "on-session-rotation-ongoing", handle_condition_session_rotation_ongoing }, | |
1360 | { "on-session-rotation-completed", handle_condition_session_rotation_completed }, | |
1361 | }; | |
1362 | ||
1363 | static | |
1364 | struct lttng_condition *parse_condition(int *argc, const char ***argv) | |
1365 | { | |
1366 | int i; | |
1367 | struct lttng_condition *cond; | |
1368 | const char *condition_name; | |
1369 | const struct condition_descr *descr = NULL; | |
1370 | ||
1371 | if (*argc == 0) { | |
1372 | ERR("Missing condition name."); | |
1373 | goto error; | |
1374 | } | |
1375 | ||
1376 | condition_name = (*argv)[0]; | |
1377 | ||
1378 | (*argc)--; | |
1379 | (*argv)++; | |
1380 | ||
1381 | for (i = 0; i < ARRAY_SIZE(condition_descrs); i++) { | |
1382 | if (strcmp(condition_name, condition_descrs[i].name) == 0) { | |
1383 | descr = &condition_descrs[i]; | |
1384 | break; | |
1385 | } | |
1386 | } | |
1387 | ||
1388 | if (!descr) { | |
1389 | ERR("Unknown condition name: %s", condition_name); | |
1390 | goto error; | |
1391 | } | |
1392 | ||
1393 | cond = descr->handler(argc, argv); | |
1394 | if (!cond) { | |
1395 | /* The handler has already printed an error message. */ | |
1396 | goto error; | |
1397 | } | |
1398 | ||
1399 | goto end; | |
1400 | error: | |
1401 | cond = NULL; | |
1402 | end: | |
1403 | return cond; | |
1404 | } | |
1405 | ||
1406 | ||
1407 | static | |
1408 | struct lttng_action *handle_action_notify(int *argc, const char ***argv) | |
1409 | { | |
1410 | return lttng_action_notify_create(); | |
1411 | } | |
1412 | ||
1413 | static const struct argpar_opt_descr no_opt_descrs[] = { | |
1414 | ARGPAR_OPT_DESCR_SENTINEL | |
1415 | }; | |
1416 | ||
1417 | /* | |
1418 | * Generic handler for a kind of action that takes a session name as its sole | |
1419 | * argument. | |
1420 | */ | |
1421 | ||
1422 | static | |
1423 | struct lttng_action *handle_action_simple_session( | |
1424 | int *argc, const char ***argv, | |
1425 | struct lttng_action *(*create_action_cb)(void), | |
1426 | enum lttng_action_status (*set_session_name_cb)(struct lttng_action *, const char *), | |
1427 | const char *action_name) | |
1428 | { | |
1429 | struct lttng_action *action = NULL; | |
1430 | struct argpar_state *state = NULL; | |
1431 | struct argpar_item *item = NULL; | |
1432 | const char *session_name_arg = NULL; | |
1433 | char *error = NULL; | |
1434 | enum lttng_action_status action_status; | |
1435 | ||
1436 | state = argpar_state_create(*argc, *argv, no_opt_descrs); | |
1437 | if (!state) { | |
1438 | ERR("Failed to allocate an argpar state."); | |
1439 | goto error; | |
1440 | } | |
1441 | ||
1442 | while (true) { | |
1443 | enum argpar_state_parse_next_status status; | |
1444 | struct argpar_item_non_opt *item_non_opt; | |
1445 | ||
1446 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1447 | status = argpar_state_parse_next(state, &item, &error); | |
1448 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1449 | ERR("%s", error); | |
1450 | goto error; | |
1451 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1452 | /* Just stop parsing here. */ | |
1453 | break; | |
1454 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1455 | break; | |
1456 | } | |
1457 | ||
1458 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1459 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1460 | ||
1461 | item_non_opt = (struct argpar_item_non_opt *) item; | |
1462 | ||
1463 | switch (item_non_opt->non_opt_index) { | |
1464 | case 0: | |
1465 | session_name_arg = item_non_opt->arg; | |
1466 | break; | |
1467 | default: | |
1468 | ERR("Unexpected argument `%s`.", | |
1469 | item_non_opt->arg); | |
1470 | goto error; | |
1471 | } | |
1472 | } | |
1473 | ||
1474 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1475 | *argv += argpar_state_get_ingested_orig_args(state); | |
1476 | ||
1477 | if (!session_name_arg) { | |
1478 | ERR("Missing session name."); | |
1479 | goto error; | |
1480 | } | |
1481 | ||
1482 | action = create_action_cb(); | |
1483 | if (!action) { | |
1484 | ERR( | |
1485 | "Failed to allocate %s session action.", action_name); | |
1486 | goto error; | |
1487 | } | |
1488 | ||
1489 | action_status = set_session_name_cb(action, session_name_arg); | |
1490 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1491 | ERR( | |
1492 | "Failed to set action %s session's session name.", | |
1493 | action_name); | |
1494 | goto error; | |
1495 | } | |
1496 | ||
1497 | goto end; | |
1498 | ||
1499 | error: | |
1500 | lttng_action_destroy(action); | |
1501 | action = NULL; | |
1502 | ||
1503 | end: | |
1504 | return action; | |
1505 | } | |
1506 | ||
1507 | static | |
1508 | struct lttng_action *handle_action_start_session(int *argc, | |
1509 | const char ***argv) | |
1510 | { | |
1511 | return handle_action_simple_session(argc, argv, | |
1512 | lttng_action_start_session_create, | |
1513 | lttng_action_start_session_set_session_name, | |
1514 | "start"); | |
1515 | } | |
1516 | ||
1517 | static | |
1518 | struct lttng_action *handle_action_stop_session(int *argc, | |
1519 | const char ***argv) | |
1520 | { | |
1521 | return handle_action_simple_session(argc, argv, | |
1522 | lttng_action_stop_session_create, | |
1523 | lttng_action_stop_session_set_session_name, | |
1524 | "stop"); | |
1525 | } | |
1526 | ||
1527 | static | |
1528 | struct lttng_action *handle_action_rotate_session(int *argc, | |
1529 | const char ***argv) | |
1530 | { | |
1531 | return handle_action_simple_session(argc, argv, | |
1532 | lttng_action_rotate_session_create, | |
1533 | lttng_action_rotate_session_set_session_name, | |
1534 | "rotate"); | |
1535 | } | |
1536 | ||
1537 | static const struct argpar_opt_descr snapshot_action_opt_descrs[] = { | |
1538 | { OPT_NAME, 'n', "name", true }, | |
1539 | { OPT_MAX_SIZE, 'm', "max-size", true }, | |
1540 | { OPT_CTRL_URL, '\0', "ctrl-url", true }, | |
1541 | { OPT_DATA_URL, '\0', "data-url", true }, | |
1542 | ARGPAR_OPT_DESCR_SENTINEL | |
1543 | }; | |
1544 | ||
1545 | static | |
1546 | struct lttng_action *handle_action_snapshot_session(int *argc, | |
1547 | const char ***argv) | |
1548 | { | |
1549 | struct lttng_action *action = NULL; | |
1550 | struct argpar_state *state = NULL; | |
1551 | struct argpar_item *item = NULL; | |
1552 | const char *session_name_arg = NULL; | |
1553 | char *snapshot_name_arg = NULL; | |
1554 | char *ctrl_url_arg = NULL; | |
1555 | char *data_url_arg = NULL; | |
1556 | char *max_size_arg = NULL; | |
1557 | const char *url_arg = NULL; | |
1558 | char *error = NULL; | |
1559 | enum lttng_action_status action_status; | |
1560 | struct lttng_snapshot_output *snapshot_output = NULL; | |
1561 | int ret; | |
1562 | ||
1563 | state = argpar_state_create(*argc, *argv, snapshot_action_opt_descrs); | |
1564 | if (!state) { | |
1565 | ERR("Failed to allocate an argpar state."); | |
1566 | goto error; | |
1567 | } | |
1568 | ||
1569 | while (true) { | |
1570 | enum argpar_state_parse_next_status status; | |
1571 | ||
1572 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1573 | status = argpar_state_parse_next(state, &item, &error); | |
1574 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1575 | ERR("%s", error); | |
1576 | goto error; | |
1577 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1578 | /* Just stop parsing here. */ | |
1579 | break; | |
1580 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1581 | break; | |
1582 | } | |
1583 | ||
1584 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1585 | ||
1586 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
1587 | struct argpar_item_opt *item_opt = | |
1588 | (struct argpar_item_opt *) item; | |
1589 | ||
1590 | switch (item_opt->descr->id) { | |
1591 | case OPT_NAME: | |
1592 | if (!assign_string(&snapshot_name_arg, item_opt->arg, "--name/-n")) { | |
1593 | goto error; | |
1594 | } | |
1595 | break; | |
1596 | ||
1597 | case OPT_MAX_SIZE: | |
1598 | if (!assign_string(&max_size_arg, item_opt->arg, "--max-size/-m")) { | |
1599 | goto error; | |
1600 | } | |
1601 | break; | |
1602 | ||
1603 | case OPT_CTRL_URL: | |
1604 | if (!assign_string(&ctrl_url_arg, item_opt->arg, "--ctrl-url")) { | |
1605 | goto error; | |
1606 | } | |
1607 | break; | |
1608 | ||
1609 | case OPT_DATA_URL: | |
1610 | if (!assign_string(&data_url_arg, item_opt->arg, "--data-url")) { | |
1611 | goto error; | |
1612 | } | |
1613 | break; | |
1614 | ||
1615 | default: | |
1616 | abort(); | |
1617 | } | |
1618 | } else { | |
1619 | struct argpar_item_non_opt *item_non_opt; | |
1620 | ||
1621 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1622 | ||
1623 | item_non_opt = (struct argpar_item_non_opt *) item; | |
1624 | ||
1625 | switch (item_non_opt->non_opt_index) { | |
1626 | case 0: | |
1627 | session_name_arg = item_non_opt->arg; | |
1628 | break; | |
1629 | ||
1630 | // FIXME: the use of a non-option argument for this is to | |
1631 | // follow the syntax of `lttng snapshot record`. But otherwise, | |
1632 | // I think an option argument would be best. | |
1633 | case 1: | |
1634 | url_arg = item_non_opt->arg; | |
1635 | break; | |
1636 | ||
1637 | default: | |
1638 | ERR("Unexpected argument `%s`.", | |
1639 | item_non_opt->arg); | |
1640 | goto error; | |
1641 | } | |
1642 | } | |
1643 | } | |
1644 | ||
1645 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1646 | *argv += argpar_state_get_ingested_orig_args(state); | |
1647 | ||
1648 | if (!session_name_arg) { | |
1649 | ERR("Missing session name."); | |
1650 | goto error; | |
1651 | } | |
1652 | ||
1653 | /* --ctrl-url and --data-url must come in pair. */ | |
1654 | if (ctrl_url_arg && !data_url_arg) { | |
1655 | ERR("--ctrl-url is specified, but --data-url is missing."); | |
1656 | goto error; | |
1657 | } | |
1658 | ||
1659 | if (!ctrl_url_arg && data_url_arg) { | |
1660 | ERR("--data-url is specified, but --ctrl-url is missing."); | |
1661 | goto error; | |
1662 | } | |
1663 | ||
1664 | /* --ctrl-url/--data-url and the non-option URL are mutually exclusive. */ | |
1665 | if (ctrl_url_arg && url_arg) { | |
1666 | ERR("Both --ctrl-url/--data-url and the non-option URL argument " | |
1667 | "can't be used together."); | |
1668 | goto error; | |
1669 | } | |
1670 | ||
1671 | /* | |
1672 | * Did the user specify an option that implies using a | |
1673 | * custom/unregistered output? | |
1674 | */ | |
1675 | if (url_arg || ctrl_url_arg) { | |
1676 | snapshot_output = lttng_snapshot_output_create(); | |
1677 | if (!snapshot_output) { | |
1678 | ERR("Failed to allocate a snapshot output."); | |
1679 | goto error; | |
1680 | } | |
1681 | } | |
1682 | ||
1683 | action = lttng_action_snapshot_session_create(); | |
1684 | if (!action) { | |
1685 | ERR( | |
1686 | "Failed to allocate snapshot session action."); | |
1687 | goto error; | |
1688 | } | |
1689 | ||
1690 | action_status = lttng_action_snapshot_session_set_session_name( | |
1691 | action, session_name_arg); | |
1692 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1693 | ERR( | |
1694 | "Failed to set action snapshot session's session name."); | |
1695 | goto error; | |
1696 | } | |
1697 | ||
1698 | if (snapshot_name_arg) { | |
1699 | if (!snapshot_output) { | |
1700 | ERR("Can't provide a snapshot output name without a snapshot output destination."); | |
1701 | goto error; | |
1702 | } | |
1703 | ||
1704 | ret = lttng_snapshot_output_set_name(snapshot_name_arg, snapshot_output); | |
1705 | if (ret != 0) { | |
1706 | ERR("Failed to set name of snapshot output."); | |
1707 | goto error; | |
1708 | } | |
1709 | } | |
1710 | ||
1711 | if (max_size_arg) { | |
1712 | uint64_t max_size; | |
1713 | ||
1714 | if (!snapshot_output) { | |
1715 | ERR("Can't provide a snapshot output max size without a snapshot output destination."); | |
1716 | goto error; | |
1717 | } | |
1718 | ||
1719 | ret = utils_parse_size_suffix(max_size_arg, &max_size); | |
1720 | if (ret != 0) { | |
1721 | ERR("Failed to parse `%s` as a size.", max_size_arg); | |
1722 | goto error; | |
1723 | } | |
1724 | ||
1725 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1726 | if (ret != 0) { | |
1727 | ERR("Failed to set snapshot output's max size."); | |
1728 | goto error; | |
1729 | } | |
1730 | } | |
1731 | ||
1732 | if (url_arg) { | |
1733 | /* One argument form, either net:// / net6:// or a local file path. */ | |
1734 | ||
1735 | if (strncmp(url_arg, "net://", strlen("net://")) == 0 || | |
1736 | strncmp(url_arg, "net6://", strlen("net6://")) == 0) { | |
1737 | ret = lttng_snapshot_output_set_network_url( | |
1738 | url_arg, snapshot_output); | |
1739 | if (ret != 0) { | |
1740 | ERR("Failed to parse %s as a network URL.", url_arg); | |
1741 | goto error; | |
1742 | } | |
1743 | } else { | |
1744 | ret = lttng_snapshot_output_set_local_path( | |
1745 | url_arg, snapshot_output); | |
1746 | if (ret != 0) { | |
1747 | ERR("Failed to parse %s as a local path.", url_arg); | |
1748 | goto error; | |
1749 | } | |
1750 | } | |
1751 | } | |
1752 | ||
1753 | if (ctrl_url_arg) { | |
1754 | /* | |
1755 | * Two argument form, network output with separate control and | |
1756 | * data URLs. | |
1757 | */ | |
1758 | ret = lttng_snapshot_output_set_network_urls( | |
1759 | ctrl_url_arg, data_url_arg, snapshot_output); | |
1760 | if (ret != 0) { | |
1761 | ERR("Failed to parse `%s` and `%s` as control and data URLs.", | |
1762 | ctrl_url_arg, data_url_arg); | |
1763 | goto error; | |
1764 | } | |
1765 | } | |
1766 | ||
1767 | if (snapshot_output) { | |
1768 | action_status = lttng_action_snapshot_session_set_output( | |
1769 | action, snapshot_output); | |
1770 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1771 | ERR("Failed to set snapshot session action's output."); | |
1772 | goto error; | |
1773 | } | |
1774 | ||
1775 | /* Ownership of `snapshot_output` has been transferred to the action. */ | |
1776 | snapshot_output = NULL; | |
1777 | } | |
1778 | ||
1779 | goto end; | |
1780 | ||
1781 | error: | |
1782 | lttng_action_destroy(action); | |
1783 | action = NULL; | |
1784 | ||
1785 | end: | |
1786 | free(snapshot_name_arg); | |
1787 | free(ctrl_url_arg); | |
1788 | free(data_url_arg); | |
1789 | free(snapshot_output); | |
1790 | return action; | |
1791 | } | |
1792 | ||
1793 | struct action_descr { | |
1794 | const char *name; | |
1795 | struct lttng_action *(*handler) (int *argc, const char ***argv); | |
1796 | }; | |
1797 | ||
1798 | static const | |
1799 | struct action_descr action_descrs[] = { | |
1800 | { "notify", handle_action_notify }, | |
1801 | { "start-session", handle_action_start_session }, | |
1802 | { "stop-session", handle_action_stop_session }, | |
1803 | { "rotate-session", handle_action_rotate_session }, | |
1804 | { "snapshot-session", handle_action_snapshot_session }, | |
1805 | }; | |
1806 | ||
1807 | static | |
1808 | struct lttng_action *parse_action(int *argc, const char ***argv) | |
1809 | { | |
1810 | int i; | |
1811 | struct lttng_action *action; | |
1812 | const char *action_name; | |
1813 | const struct action_descr *descr = NULL; | |
1814 | ||
1815 | if (*argc == 0) { | |
1816 | ERR("Missing action name."); | |
1817 | goto error; | |
1818 | } | |
1819 | ||
1820 | action_name = (*argv)[0]; | |
1821 | ||
1822 | (*argc)--; | |
1823 | (*argv)++; | |
1824 | ||
1825 | for (i = 0; i < ARRAY_SIZE(action_descrs); i++) { | |
1826 | if (strcmp(action_name, action_descrs[i].name) == 0) { | |
1827 | descr = &action_descrs[i]; | |
1828 | break; | |
1829 | } | |
1830 | } | |
1831 | ||
1832 | if (!descr) { | |
1833 | ERR("Unknown action name: %s", action_name); | |
1834 | goto error; | |
1835 | } | |
1836 | ||
1837 | action = descr->handler(argc, argv); | |
1838 | if (!action) { | |
1839 | /* The handler has already printed an error message. */ | |
1840 | goto error; | |
1841 | } | |
1842 | ||
1843 | goto end; | |
1844 | error: | |
1845 | action = NULL; | |
1846 | end: | |
1847 | return action; | |
1848 | } | |
1849 | ||
1850 | static const | |
1851 | struct argpar_opt_descr add_trigger_options[] = { | |
1852 | { OPT_HELP, 'h', "help", false }, | |
1853 | { OPT_LIST_OPTIONS, '\0', "list-options", false }, | |
1854 | { OPT_CONDITION, '\0', "condition", false }, | |
1855 | { OPT_ACTION, '\0', "action", false }, | |
1856 | { OPT_ID, '\0', "id", true }, | |
1857 | { OPT_FIRE_ONCE_AFTER, '\0', "fire-once-after", true }, | |
1858 | { OPT_FIRE_EVERY, '\0', "fire-every", true }, | |
1859 | { OPT_USER_ID, '\0', "user-id", true }, | |
1860 | ARGPAR_OPT_DESCR_SENTINEL, | |
1861 | }; | |
1862 | ||
1863 | static | |
1864 | void lttng_actions_destructor(void *p) | |
1865 | { | |
1866 | struct lttng_action *action = p; | |
1867 | ||
1868 | lttng_action_destroy(action); | |
1869 | } | |
1870 | ||
1871 | int cmd_add_trigger(int argc, const char **argv) | |
1872 | { | |
1873 | int ret; | |
1874 | int my_argc = argc - 1; | |
1875 | const char **my_argv = argv + 1; | |
1876 | struct lttng_condition *condition = NULL; | |
1877 | struct lttng_dynamic_pointer_array actions; | |
1878 | struct argpar_state *argpar_state = NULL; | |
1879 | struct argpar_item *argpar_item = NULL; | |
1880 | struct lttng_action *action_group = NULL; | |
1881 | struct lttng_action *action = NULL; | |
1882 | struct lttng_trigger *trigger = NULL; | |
1883 | char *error = NULL; | |
1884 | char *id = NULL; | |
1885 | int i; | |
1886 | char *fire_once_after_str = NULL; | |
1887 | char *fire_every_str = NULL; | |
1888 | char *user_id = NULL; | |
1889 | ||
1890 | lttng_dynamic_pointer_array_init(&actions, lttng_actions_destructor); | |
1891 | ||
1892 | while (true) { | |
1893 | enum argpar_state_parse_next_status status; | |
1894 | struct argpar_item_opt *item_opt; | |
1895 | int ingested_args; | |
1896 | ||
1897 | argpar_state_destroy(argpar_state); | |
1898 | argpar_state = argpar_state_create(my_argc, my_argv, | |
1899 | add_trigger_options); | |
1900 | if (!argpar_state) { | |
1901 | ERR("Failed to create argpar state."); | |
1902 | goto error; | |
1903 | } | |
1904 | ||
1905 | status = argpar_state_parse_next(argpar_state, &argpar_item, &error); | |
1906 | ||
1907 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1908 | ERR("%s", error); | |
1909 | goto error; | |
1910 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1911 | ERR("%s", error); | |
1912 | goto error; | |
1913 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1914 | break; | |
1915 | } | |
1916 | ||
1917 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1918 | ||
1919 | if (argpar_item->type == ARGPAR_ITEM_TYPE_NON_OPT) { | |
1920 | struct argpar_item_non_opt *item_non_opt = | |
1921 | (struct argpar_item_non_opt *) argpar_item; | |
1922 | ||
1923 | ERR("Unexpected argument `%s`.", | |
1924 | item_non_opt->arg); | |
1925 | goto error; | |
1926 | } | |
1927 | ||
1928 | item_opt = (struct argpar_item_opt *) argpar_item; | |
1929 | ||
1930 | ingested_args = argpar_state_get_ingested_orig_args( | |
1931 | argpar_state); | |
1932 | ||
1933 | my_argc -= ingested_args; | |
1934 | my_argv += ingested_args; | |
1935 | ||
1936 | switch (item_opt->descr->id) { | |
1937 | case OPT_HELP: | |
1938 | SHOW_HELP(); | |
1939 | ret = 0; | |
1940 | goto end; | |
1941 | ||
1942 | case OPT_LIST_OPTIONS: | |
1943 | list_cmd_options_argpar(stdout, add_trigger_options); | |
1944 | ret = 0; | |
1945 | goto end; | |
1946 | ||
1947 | case OPT_CONDITION: | |
1948 | { | |
1949 | if (condition) { | |
1950 | ERR("A --condition was already given."); | |
1951 | goto error; | |
1952 | } | |
1953 | ||
1954 | condition = parse_condition(&my_argc, &my_argv); | |
1955 | if (!condition) { | |
1956 | /* | |
1957 | * An error message was already printed by | |
1958 | * parse_condition. | |
1959 | */ | |
1960 | goto error; | |
1961 | } | |
1962 | ||
1963 | break; | |
1964 | } | |
1965 | ||
1966 | case OPT_ACTION: | |
1967 | { | |
1968 | action = parse_action(&my_argc, &my_argv); | |
1969 | if (!action) { | |
1970 | /* | |
1971 | * An error message was already printed by | |
1972 | * parse_condition. | |
1973 | */ | |
1974 | goto error; | |
1975 | } | |
1976 | ||
1977 | ret = lttng_dynamic_pointer_array_add_pointer( | |
1978 | &actions, action); | |
1979 | if (ret) { | |
1980 | ERR("Failed to add pointer to pointer array."); | |
1981 | goto error; | |
1982 | } | |
1983 | ||
1984 | /* Ownership of the action was transferred to the group. */ | |
1985 | action = NULL; | |
1986 | ||
1987 | break; | |
1988 | } | |
1989 | ||
1990 | case OPT_ID: | |
1991 | { | |
1992 | if (!assign_string(&id, item_opt->arg, "--id")) { | |
1993 | goto error; | |
1994 | } | |
1995 | ||
1996 | break; | |
1997 | } | |
1998 | ||
1999 | case OPT_FIRE_ONCE_AFTER: | |
2000 | { | |
2001 | if (!assign_string(&fire_once_after_str, item_opt->arg, | |
2002 | "--fire-once-after")) { | |
2003 | goto error; | |
2004 | } | |
2005 | break; | |
2006 | } | |
2007 | ||
2008 | case OPT_FIRE_EVERY: | |
2009 | { | |
2010 | if (!assign_string(&fire_every_str, item_opt->arg, | |
2011 | "--fire-every")) { | |
2012 | goto error; | |
2013 | } | |
2014 | break; | |
2015 | } | |
2016 | ||
2017 | case OPT_USER_ID: | |
2018 | { | |
2019 | if (!assign_string(&user_id, item_opt->arg, | |
2020 | "--user-id")) { | |
2021 | goto error; | |
2022 | } | |
2023 | break; | |
2024 | } | |
2025 | ||
2026 | default: | |
2027 | abort(); | |
2028 | } | |
2029 | } | |
2030 | ||
2031 | if (!condition) { | |
2032 | ERR("Missing --condition."); | |
2033 | goto error; | |
2034 | } | |
2035 | ||
2036 | if (lttng_dynamic_pointer_array_get_count(&actions) == 0) { | |
2037 | ERR("Need at least one --action."); | |
2038 | goto error; | |
2039 | } | |
2040 | ||
2041 | if (fire_every_str && fire_once_after_str) { | |
2042 | ERR("Can't specify both --fire-once-after and --fire-every."); | |
2043 | goto error; | |
2044 | } | |
2045 | ||
2046 | action_group = lttng_action_group_create(); | |
2047 | if (!action_group) { | |
2048 | goto error; | |
2049 | } | |
2050 | ||
2051 | for (i = 0; i < lttng_dynamic_pointer_array_get_count(&actions); i++) { | |
2052 | enum lttng_action_status status; | |
2053 | ||
2054 | action = lttng_dynamic_pointer_array_steal_pointer(&actions, i); | |
2055 | ||
2056 | status = lttng_action_group_add_action( | |
2057 | action_group, action); | |
2058 | if (status != LTTNG_ACTION_STATUS_OK) { | |
2059 | goto error; | |
2060 | } | |
2061 | ||
2062 | /* Ownership of the action was transferred to the group. */ | |
2063 | action = NULL; | |
2064 | } | |
2065 | ||
2066 | ||
2067 | trigger = lttng_trigger_create(condition, action_group); | |
2068 | if (!trigger) { | |
2069 | goto error; | |
2070 | } | |
2071 | ||
2072 | if (id) { | |
2073 | enum lttng_trigger_status trigger_status = | |
2074 | lttng_trigger_set_name(trigger, id); | |
2075 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
2076 | ERR("Failed to set trigger id."); | |
2077 | goto error; | |
2078 | } | |
2079 | } | |
2080 | ||
2081 | if (fire_once_after_str) { | |
2082 | unsigned long long threshold; | |
2083 | enum lttng_trigger_status trigger_status; | |
2084 | ||
2085 | if (utils_parse_unsigned_long_long(fire_once_after_str, &threshold) != 0) { | |
2086 | ERR("Failed to parse `%s` as an integer.", fire_once_after_str); | |
2087 | goto error; | |
2088 | } | |
2089 | ||
2090 | trigger_status = lttng_trigger_set_firing_policy(trigger, | |
2091 | LTTNG_TRIGGER_FIRE_ONCE_AFTER_N, threshold); | |
2092 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
2093 | ERR("Failed to set trigger's firing policy."); | |
2094 | goto error; | |
2095 | } | |
2096 | } | |
2097 | ||
2098 | if (fire_every_str) { | |
2099 | unsigned long long threshold; | |
2100 | enum lttng_trigger_status trigger_status; | |
2101 | ||
2102 | if (utils_parse_unsigned_long_long(fire_every_str, &threshold) != 0) { | |
2103 | ERR("Failed to parse `%s` as an integer.", fire_every_str); | |
2104 | goto error; | |
2105 | } | |
2106 | ||
2107 | trigger_status = lttng_trigger_set_firing_policy(trigger, | |
2108 | LTTNG_TRIGGER_FIRE_EVERY_N, threshold); | |
2109 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
2110 | ERR("Failed to set trigger's firing policy."); | |
2111 | goto error; | |
2112 | } | |
2113 | } | |
2114 | ||
2115 | if (user_id) { | |
2116 | enum lttng_trigger_status trigger_status; | |
2117 | char *end; | |
2118 | long long uid; | |
2119 | ||
2120 | errno = 0; | |
2121 | uid = strtol(user_id, &end, 10); | |
2122 | if (end == user_id || *end != '\0' || errno != 0) { | |
2123 | ERR("Failed to parse `%s` as an integer.", user_id); | |
2124 | } | |
2125 | ||
2126 | trigger_status = lttng_trigger_set_user_identity(trigger, | |
2127 | uid); | |
2128 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
2129 | ERR("Failed to set trigger's user identity."); | |
2130 | goto error; | |
2131 | } | |
2132 | } | |
2133 | ||
2134 | ret = lttng_register_trigger(trigger); | |
2135 | if (ret) { | |
2136 | ERR("Failed to register trigger: %s.", | |
2137 | lttng_strerror(ret)); | |
2138 | goto error; | |
2139 | } | |
2140 | ||
2141 | MSG("Trigger registered successfully."); | |
2142 | ||
2143 | goto end; | |
2144 | ||
2145 | error: | |
2146 | ret = 1; | |
2147 | ||
2148 | end: | |
2149 | argpar_state_destroy(argpar_state); | |
2150 | lttng_dynamic_pointer_array_reset(&actions); | |
2151 | lttng_condition_destroy(condition); | |
2152 | lttng_action_destroy(action_group); | |
2153 | lttng_trigger_destroy(trigger); | |
2154 | free(id); | |
2155 | free(fire_once_after_str); | |
2156 | free(fire_every_str); | |
2157 | free(user_id); | |
2158 | // TODO: check what else to free | |
2159 | ||
2160 | return ret; | |
2161 | } |