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4624dad0 SM |
1 | /* |
2 | * Copyright (C) 2021 Simon Marchi <simon.marchi@efficios.com> | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0-only | |
5 | * | |
6 | */ | |
7 | ||
8 | #include <ctype.h> | |
9 | #include <stdio.h> | |
10 | ||
11 | #include "../command.h" | |
12 | #include "../loglevel.h" | |
13 | #include "../uprobe.h" | |
14 | ||
15 | #include "common/argpar/argpar.h" | |
16 | #include "common/dynamic-array.h" | |
17 | #include "common/string-utils/string-utils.h" | |
18 | #include "common/utils.h" | |
19 | /* For lttng_event_rule_type_str(). */ | |
20 | #include <lttng/event-rule/event-rule-internal.h> | |
21 | #include <lttng/lttng.h> | |
20a01d15 SM |
22 | #include "common/filter/filter-ast.h" |
23 | #include "common/filter/filter-ir.h" | |
24 | #include "common/dynamic-array.h" | |
4624dad0 SM |
25 | |
26 | #if (LTTNG_SYMBOL_NAME_LEN == 256) | |
27 | #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255" | |
28 | #endif | |
29 | ||
30 | #ifdef LTTNG_EMBED_HELP | |
31 | static const char help_msg[] = | |
32 | #include <lttng-add-trigger.1.h> | |
33 | ; | |
34 | #endif | |
35 | ||
36 | enum { | |
37 | OPT_HELP, | |
38 | OPT_LIST_OPTIONS, | |
39 | ||
40 | OPT_CONDITION, | |
41 | OPT_ACTION, | |
42 | OPT_ID, | |
4624dad0 | 43 | OPT_USER_ID, |
bbadb5e0 | 44 | OPT_RATE_POLICY, |
4624dad0 SM |
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 | OPT_URL, | |
69 | OPT_PATH, | |
20a01d15 SM |
70 | |
71 | OPT_CAPTURE, | |
4624dad0 SM |
72 | }; |
73 | ||
74 | static const struct argpar_opt_descr event_rule_opt_descrs[] = { | |
75 | { OPT_ALL, 'a', "all", false }, | |
76 | { OPT_FILTER, 'f', "filter", true }, | |
77 | { OPT_EXCLUDE, 'x', "exclude", true }, | |
78 | { OPT_LOGLEVEL, '\0', "loglevel", true }, | |
79 | { OPT_LOGLEVEL_ONLY, '\0', "loglevel-only", true }, | |
80 | ||
81 | /* Domains */ | |
82 | { OPT_USERSPACE, 'u', "userspace", false }, | |
83 | { OPT_KERNEL, 'k', "kernel", false }, | |
84 | { OPT_LOG4J, 'l', "log4j", false }, | |
85 | { OPT_JUL, 'j', "jul", false }, | |
86 | { OPT_PYTHON, 'p', "python", false }, | |
87 | ||
88 | /* Event rule types */ | |
89 | { OPT_FUNCTION, '\0', "function", true }, | |
90 | { OPT_PROBE, '\0', "probe", true }, | |
91 | { OPT_USERSPACE_PROBE, '\0', "userspace-probe", true }, | |
92 | { OPT_SYSCALL, '\0', "syscall" }, | |
93 | { OPT_TRACEPOINT, '\0', "tracepoint" }, | |
94 | ||
20a01d15 SM |
95 | /* Capture descriptor */ |
96 | { OPT_CAPTURE, '\0', "capture", true }, | |
97 | ||
4624dad0 SM |
98 | ARGPAR_OPT_DESCR_SENTINEL |
99 | }; | |
100 | ||
101 | static | |
102 | bool assign_domain_type(enum lttng_domain_type *dest, | |
103 | enum lttng_domain_type src) | |
104 | { | |
105 | bool ret; | |
106 | ||
107 | if (*dest == LTTNG_DOMAIN_NONE || *dest == src) { | |
108 | *dest = src; | |
109 | ret = true; | |
110 | } else { | |
111 | ERR("Multiple domains specified."); | |
112 | ret = false; | |
113 | } | |
114 | ||
115 | return ret; | |
116 | } | |
117 | ||
118 | static | |
119 | bool assign_event_rule_type(enum lttng_event_rule_type *dest, | |
120 | enum lttng_event_rule_type src) | |
121 | { | |
122 | bool ret; | |
123 | ||
124 | if (*dest == LTTNG_EVENT_RULE_TYPE_UNKNOWN || *dest == src) { | |
125 | *dest = src; | |
126 | ret = true; | |
127 | } else { | |
128 | ERR("Multiple event types specified."); | |
129 | ret = false; | |
130 | } | |
131 | ||
132 | return ret; | |
133 | } | |
134 | ||
135 | static | |
136 | bool assign_string(char **dest, const char *src, const char *opt_name) | |
137 | { | |
138 | bool ret; | |
139 | ||
140 | if (*dest) { | |
141 | ERR("Duplicate '%s' given.", opt_name); | |
142 | goto error; | |
143 | } | |
144 | ||
145 | *dest = strdup(src); | |
146 | if (!*dest) { | |
147 | PERROR("Failed to allocate string '%s'.", opt_name); | |
148 | goto error; | |
149 | } | |
150 | ||
151 | ret = true; | |
152 | goto end; | |
153 | ||
154 | error: | |
155 | ret = false; | |
156 | ||
157 | end: | |
158 | return ret; | |
159 | } | |
160 | ||
161 | /* This is defined in enable_events.c. */ | |
162 | LTTNG_HIDDEN | |
163 | int create_exclusion_list_and_validate(const char *event_name, | |
164 | const char *exclusions_arg, | |
165 | char ***exclusion_list); | |
166 | ||
167 | /* | |
168 | * Parse `str` as a log level in domain `domain_type`. Return -1 if the string | |
169 | * is not recognized as a valid log level. | |
170 | */ | |
171 | static | |
172 | int parse_loglevel_string(const char *str, enum lttng_domain_type domain_type) | |
173 | { | |
174 | switch (domain_type) { | |
175 | case LTTNG_DOMAIN_UST: | |
176 | { | |
177 | enum lttng_loglevel loglevel; | |
178 | const int ret = loglevel_name_to_value(str, &loglevel); | |
179 | ||
180 | return ret == -1 ? ret : (int) loglevel; | |
181 | } | |
182 | case LTTNG_DOMAIN_LOG4J: | |
183 | { | |
184 | enum lttng_loglevel_log4j loglevel; | |
185 | const int ret = loglevel_log4j_name_to_value(str, &loglevel); | |
186 | ||
187 | return ret == -1 ? ret : (int) loglevel; | |
188 | } | |
189 | case LTTNG_DOMAIN_JUL: | |
190 | { | |
191 | enum lttng_loglevel_jul loglevel; | |
192 | const int ret = loglevel_jul_name_to_value(str, &loglevel); | |
193 | ||
194 | return ret == -1 ? ret : (int) loglevel; | |
195 | } | |
196 | case LTTNG_DOMAIN_PYTHON: | |
197 | { | |
198 | enum lttng_loglevel_python loglevel; | |
199 | const int ret = loglevel_python_name_to_value(str, &loglevel); | |
200 | ||
201 | return ret == -1 ? ret : (int) loglevel; | |
202 | } | |
203 | default: | |
204 | /* Invalid domain type. */ | |
205 | abort(); | |
206 | } | |
207 | } | |
208 | ||
209 | static int parse_kernel_probe_opts(const char *source, | |
210 | struct lttng_kernel_probe_location **location) | |
211 | { | |
212 | int ret = 0; | |
213 | int match; | |
214 | char s_hex[19]; | |
215 | char name[LTTNG_SYMBOL_NAME_LEN]; | |
216 | char *symbol_name = NULL; | |
217 | uint64_t offset; | |
218 | ||
219 | /* Check for symbol+offset. */ | |
220 | match = sscanf(source, | |
221 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API | |
222 | "[^'+']+%18s", | |
223 | name, s_hex); | |
224 | if (match == 2) { | |
225 | if (*s_hex == '\0') { | |
226 | ERR("Kernel probe symbol offset is missing."); | |
227 | goto error; | |
228 | } | |
229 | ||
230 | symbol_name = strndup(name, LTTNG_SYMBOL_NAME_LEN); | |
231 | if (!symbol_name) { | |
232 | PERROR("Failed to copy kernel probe location symbol name."); | |
233 | goto error; | |
234 | } | |
235 | offset = strtoul(s_hex, NULL, 0); | |
236 | ||
237 | *location = lttng_kernel_probe_location_symbol_create( | |
238 | symbol_name, offset); | |
f6e30a8a | 239 | if (!*location) { |
4624dad0 SM |
240 | ERR("Failed to create symbol kernel probe location."); |
241 | goto error; | |
242 | } | |
243 | ||
244 | goto end; | |
245 | } | |
246 | ||
247 | /* Check for symbol. */ | |
248 | if (isalpha(name[0]) || name[0] == '_') { | |
249 | match = sscanf(source, | |
250 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API | |
251 | "s", | |
252 | name); | |
253 | if (match == 1) { | |
254 | symbol_name = strndup(name, LTTNG_SYMBOL_NAME_LEN); | |
255 | if (!symbol_name) { | |
256 | ERR("Failed to copy kernel probe location symbol name."); | |
257 | goto error; | |
258 | } | |
259 | ||
260 | *location = lttng_kernel_probe_location_symbol_create( | |
261 | symbol_name, 0); | |
14f27f79 | 262 | if (!*location) { |
4624dad0 SM |
263 | ERR("Failed to create symbol kernel probe location."); |
264 | goto error; | |
265 | } | |
266 | ||
267 | goto end; | |
268 | } | |
269 | } | |
270 | ||
271 | /* Check for address. */ | |
272 | match = sscanf(source, "%18s", s_hex); | |
273 | if (match > 0) { | |
274 | uint64_t address; | |
275 | ||
276 | if (*s_hex == '\0') { | |
277 | ERR("Invalid kernel probe location address."); | |
278 | goto error; | |
279 | } | |
280 | ||
281 | address = strtoul(s_hex, NULL, 0); | |
282 | *location = lttng_kernel_probe_location_address_create(address); | |
5c6ca809 | 283 | if (!*location) { |
4624dad0 SM |
284 | ERR("Failed to create symbol kernel probe location."); |
285 | goto error; | |
286 | } | |
287 | ||
288 | goto end; | |
289 | } | |
290 | ||
291 | error: | |
292 | /* No match */ | |
293 | ret = -1; | |
294 | *location = NULL; | |
295 | ||
296 | end: | |
297 | free(symbol_name); | |
298 | return ret; | |
299 | } | |
300 | ||
20a01d15 SM |
301 | static |
302 | struct lttng_event_expr *ir_op_load_expr_to_event_expr( | |
3363a4c3 JG |
303 | const struct ir_load_expression *load_expr, |
304 | const char *capture_str) | |
20a01d15 SM |
305 | { |
306 | char *provider_name = NULL; | |
307 | struct lttng_event_expr *event_expr = NULL; | |
3363a4c3 JG |
308 | const struct ir_load_expression_op *load_expr_op = load_expr->child; |
309 | const enum ir_load_expression_type load_expr_child_type = | |
310 | load_expr_op->type; | |
20a01d15 | 311 | |
3363a4c3 | 312 | switch (load_expr_child_type) { |
20a01d15 SM |
313 | case IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT: |
314 | case IR_LOAD_EXPRESSION_GET_CONTEXT_ROOT: | |
315 | { | |
316 | const char *field_name; | |
317 | ||
318 | load_expr_op = load_expr_op->next; | |
319 | assert(load_expr_op); | |
320 | assert(load_expr_op->type == IR_LOAD_EXPRESSION_GET_SYMBOL); | |
321 | field_name = load_expr_op->u.symbol; | |
322 | assert(field_name); | |
323 | ||
3363a4c3 | 324 | event_expr = load_expr_child_type == IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT ? |
20a01d15 SM |
325 | lttng_event_expr_event_payload_field_create(field_name) : |
326 | lttng_event_expr_channel_context_field_create(field_name); | |
327 | if (!event_expr) { | |
328 | ERR("Failed to create %s event expression: field name = `%s`.", | |
3363a4c3 | 329 | load_expr_child_type == IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT ? |
20a01d15 SM |
330 | "payload field" : "channel context", |
331 | field_name); | |
332 | goto error; | |
333 | } | |
334 | ||
335 | break; | |
336 | } | |
337 | case IR_LOAD_EXPRESSION_GET_APP_CONTEXT_ROOT: | |
338 | { | |
339 | const char *colon; | |
340 | const char *type_name; | |
341 | const char *field_name; | |
342 | ||
343 | load_expr_op = load_expr_op->next; | |
344 | assert(load_expr_op); | |
345 | assert(load_expr_op->type == IR_LOAD_EXPRESSION_GET_SYMBOL); | |
346 | field_name = load_expr_op->u.symbol; | |
347 | assert(field_name); | |
348 | ||
349 | /* | |
350 | * The field name needs to be of the form PROVIDER:TYPE. We | |
351 | * split it here. | |
352 | */ | |
353 | colon = strchr(field_name, ':'); | |
354 | if (!colon) { | |
355 | ERR("Invalid app-specific context field name: missing colon in `%s`.", | |
356 | field_name); | |
357 | goto error; | |
358 | } | |
359 | ||
360 | type_name = colon + 1; | |
361 | if (*type_name == '\0') { | |
362 | ERR("Invalid app-specific context field name: missing type name after colon in `%s`.", | |
363 | field_name); | |
364 | goto error; | |
365 | } | |
366 | ||
367 | provider_name = strndup(field_name, colon - field_name); | |
368 | if (!provider_name) { | |
369 | PERROR("Failed to allocate field name string"); | |
370 | goto error; | |
371 | } | |
372 | ||
373 | event_expr = lttng_event_expr_app_specific_context_field_create( | |
374 | provider_name, type_name); | |
375 | if (!event_expr) { | |
376 | ERR("Failed to create app-specific context field event expression: provider name = `%s`, type name = `%s`", | |
377 | provider_name, type_name); | |
378 | goto error; | |
379 | } | |
380 | ||
381 | break; | |
382 | } | |
383 | default: | |
384 | ERR("%s: unexpected load expr type %d.", __func__, | |
385 | load_expr_op->type); | |
386 | abort(); | |
387 | } | |
388 | ||
389 | load_expr_op = load_expr_op->next; | |
390 | ||
391 | /* There may be a single array index after that. */ | |
392 | if (load_expr_op->type == IR_LOAD_EXPRESSION_GET_INDEX) { | |
393 | struct lttng_event_expr *index_event_expr; | |
394 | const uint64_t index = load_expr_op->u.index; | |
395 | ||
396 | index_event_expr = lttng_event_expr_array_field_element_create(event_expr, index); | |
397 | if (!index_event_expr) { | |
398 | ERR("Failed to create array field element event expression."); | |
399 | goto error; | |
400 | } | |
401 | ||
402 | event_expr = index_event_expr; | |
403 | load_expr_op = load_expr_op->next; | |
404 | } | |
405 | ||
406 | switch (load_expr_op->type) { | |
407 | case IR_LOAD_EXPRESSION_LOAD_FIELD: | |
408 | /* | |
409 | * This is what we expect, IR_LOAD_EXPRESSION_LOAD_FIELD is | |
410 | * always found at the end of the chain. | |
411 | */ | |
412 | break; | |
413 | case IR_LOAD_EXPRESSION_GET_SYMBOL: | |
414 | ERR("While parsing expression `%s`: Capturing subfields is not supported.", | |
415 | capture_str); | |
416 | goto error; | |
417 | ||
418 | default: | |
419 | ERR("%s: unexpected load expression operator %s.", __func__, | |
420 | ir_load_expression_type_str(load_expr_op->type)); | |
421 | abort(); | |
422 | } | |
423 | ||
424 | goto end; | |
425 | ||
426 | error: | |
427 | lttng_event_expr_destroy(event_expr); | |
428 | event_expr = NULL; | |
429 | ||
430 | end: | |
431 | free(provider_name); | |
432 | ||
433 | return event_expr; | |
434 | } | |
435 | ||
436 | static | |
437 | struct lttng_event_expr *ir_op_load_to_event_expr( | |
438 | const struct ir_op *ir, const char *capture_str) | |
439 | { | |
440 | struct lttng_event_expr *event_expr = NULL; | |
441 | ||
442 | assert(ir->op == IR_OP_LOAD); | |
443 | ||
444 | switch (ir->data_type) { | |
445 | case IR_DATA_EXPRESSION: | |
446 | { | |
447 | const struct ir_load_expression *ir_load_expr = | |
448 | ir->u.load.u.expression; | |
449 | ||
450 | event_expr = ir_op_load_expr_to_event_expr( | |
451 | ir_load_expr, capture_str); | |
452 | break; | |
453 | } | |
454 | default: | |
455 | ERR("%s: unexpected data type: %s.", __func__, | |
456 | ir_data_type_str(ir->data_type)); | |
457 | abort(); | |
458 | } | |
459 | ||
460 | return event_expr; | |
461 | } | |
462 | ||
463 | static | |
464 | const char *ir_operator_type_human_str(enum ir_op_type op) | |
465 | { | |
466 | const char *name; | |
467 | ||
468 | switch (op) { | |
469 | case IR_OP_BINARY: | |
470 | name = "Binary"; | |
471 | break; | |
472 | case IR_OP_UNARY: | |
473 | name = "Unary"; | |
474 | break; | |
475 | case IR_OP_LOGICAL: | |
476 | name = "Logical"; | |
477 | break; | |
478 | default: | |
479 | abort(); | |
480 | } | |
481 | ||
482 | return name; | |
483 | } | |
484 | ||
485 | static | |
486 | struct lttng_event_expr *ir_op_root_to_event_expr(const struct ir_op *ir, | |
487 | const char *capture_str) | |
488 | { | |
489 | struct lttng_event_expr *event_expr = NULL; | |
490 | ||
491 | assert(ir->op == IR_OP_ROOT); | |
492 | ir = ir->u.root.child; | |
493 | ||
494 | switch (ir->op) { | |
495 | case IR_OP_LOAD: | |
496 | event_expr = ir_op_load_to_event_expr(ir, capture_str); | |
497 | break; | |
498 | case IR_OP_BINARY: | |
499 | case IR_OP_UNARY: | |
500 | case IR_OP_LOGICAL: | |
501 | ERR("While parsing expression `%s`: %s operators are not allowed in capture expressions.", | |
502 | capture_str, | |
503 | ir_operator_type_human_str(ir->op)); | |
504 | break; | |
505 | default: | |
506 | ERR("%s: unexpected IR op type: %s.", __func__, | |
507 | ir_op_type_str(ir->op)); | |
508 | abort(); | |
509 | } | |
510 | ||
511 | return event_expr; | |
512 | } | |
513 | ||
514 | static | |
515 | void destroy_event_expr(void *ptr) | |
516 | { | |
517 | lttng_event_expr_destroy(ptr); | |
518 | } | |
519 | ||
520 | struct parse_event_rule_res { | |
521 | /* Owned by this. */ | |
522 | struct lttng_event_rule *er; | |
523 | ||
524 | /* Array of `struct lttng_event_expr *` */ | |
525 | struct lttng_dynamic_pointer_array capture_descriptors; | |
526 | }; | |
527 | ||
528 | static | |
529 | struct parse_event_rule_res parse_event_rule(int *argc, const char ***argv) | |
4624dad0 | 530 | { |
4624dad0 SM |
531 | enum lttng_domain_type domain_type = LTTNG_DOMAIN_NONE; |
532 | enum lttng_event_rule_type event_rule_type = | |
533 | LTTNG_EVENT_RULE_TYPE_UNKNOWN; | |
534 | struct argpar_state *state; | |
535 | struct argpar_item *item = NULL; | |
536 | char *error = NULL; | |
537 | int consumed_args = -1; | |
538 | struct lttng_kernel_probe_location *kernel_probe_location = NULL; | |
539 | struct lttng_userspace_probe_location *userspace_probe_location = NULL; | |
20a01d15 SM |
540 | struct parse_event_rule_res res = { 0 }; |
541 | struct lttng_event_expr *event_expr = NULL; | |
542 | struct filter_parser_ctx *parser_ctx = NULL; | |
85b05318 | 543 | struct lttng_log_level_rule *log_level_rule = NULL; |
4624dad0 SM |
544 | |
545 | /* Was the -a/--all flag provided? */ | |
546 | bool all_events = false; | |
547 | ||
548 | /* Tracepoint name (non-option argument). */ | |
549 | const char *tracepoint_name = NULL; | |
550 | ||
551 | /* Holds the argument of --probe / --userspace-probe. */ | |
552 | char *source = NULL; | |
553 | ||
554 | /* Filter. */ | |
555 | char *filter = NULL; | |
556 | ||
557 | /* Exclude. */ | |
558 | char *exclude = NULL; | |
559 | char **exclusion_list = NULL; | |
560 | ||
561 | /* Log level. */ | |
562 | char *loglevel_str = NULL; | |
563 | bool loglevel_only = false; | |
564 | ||
20a01d15 SM |
565 | lttng_dynamic_pointer_array_init(&res.capture_descriptors, |
566 | destroy_event_expr); | |
4624dad0 SM |
567 | state = argpar_state_create(*argc, *argv, event_rule_opt_descrs); |
568 | if (!state) { | |
569 | ERR("Failed to allocate an argpar state."); | |
570 | goto error; | |
571 | } | |
572 | ||
573 | while (true) { | |
574 | enum argpar_state_parse_next_status status; | |
575 | ||
576 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
577 | status = argpar_state_parse_next(state, &item, &error); | |
578 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
579 | ERR("%s", error); | |
580 | goto error; | |
581 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
582 | /* Just stop parsing here. */ | |
583 | break; | |
584 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
585 | break; | |
586 | } | |
587 | ||
588 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
589 | ||
590 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
591 | const struct argpar_item_opt *item_opt = | |
592 | (const struct argpar_item_opt *) item; | |
593 | ||
594 | switch (item_opt->descr->id) { | |
595 | /* Domains. */ | |
596 | case OPT_USERSPACE: | |
597 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_UST)) { | |
598 | goto error; | |
599 | } | |
600 | ||
601 | break; | |
602 | case OPT_KERNEL: | |
603 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_KERNEL)) { | |
604 | goto error; | |
605 | } | |
606 | ||
607 | break; | |
608 | case OPT_LOG4J: | |
609 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_LOG4J)) { | |
610 | goto error; | |
611 | } | |
612 | ||
613 | break; | |
614 | case OPT_JUL: | |
615 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_JUL)) { | |
616 | goto error; | |
617 | } | |
618 | ||
619 | break; | |
620 | case OPT_PYTHON: | |
621 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_PYTHON)) { | |
622 | goto error; | |
623 | } | |
624 | ||
625 | break; | |
626 | ||
627 | /* Event rule types */ | |
628 | case OPT_FUNCTION: | |
629 | if (!assign_event_rule_type(&event_rule_type, | |
f2d09181 | 630 | LTTNG_EVENT_RULE_TYPE_KERNEL_FUNCTION)) { |
4624dad0 SM |
631 | goto error; |
632 | } | |
633 | ||
634 | break; | |
635 | case OPT_PROBE: | |
636 | if (!assign_event_rule_type(&event_rule_type, | |
f2791161 | 637 | LTTNG_EVENT_RULE_TYPE_KERNEL_PROBE)) { |
4624dad0 SM |
638 | goto error; |
639 | } | |
640 | ||
641 | if (!assign_string(&source, item_opt->arg, "source")) { | |
642 | goto error; | |
643 | } | |
644 | ||
645 | break; | |
646 | case OPT_USERSPACE_PROBE: | |
647 | if (!assign_event_rule_type(&event_rule_type, | |
1f1567a5 | 648 | LTTNG_EVENT_RULE_TYPE_USERSPACE_PROBE)) { |
4624dad0 SM |
649 | goto error; |
650 | } | |
651 | ||
652 | if (!assign_string(&source, item_opt->arg, "source")) { | |
653 | goto error; | |
654 | } | |
655 | ||
656 | break; | |
657 | case OPT_SYSCALL: | |
658 | if (!assign_event_rule_type(&event_rule_type, | |
659 | LTTNG_EVENT_RULE_TYPE_SYSCALL)) { | |
660 | goto error; | |
661 | } | |
662 | ||
663 | break; | |
664 | case OPT_TRACEPOINT: | |
665 | if (!assign_event_rule_type(&event_rule_type, | |
666 | LTTNG_EVENT_RULE_TYPE_TRACEPOINT)) { | |
667 | goto error; | |
668 | } | |
669 | ||
670 | break; | |
671 | case OPT_ALL: | |
672 | all_events = true; | |
673 | break; | |
674 | case OPT_FILTER: | |
675 | if (!assign_string(&filter, item_opt->arg, | |
676 | "--filter/-f")) { | |
677 | goto error; | |
678 | } | |
679 | ||
680 | break; | |
681 | case OPT_EXCLUDE: | |
682 | if (!assign_string(&exclude, item_opt->arg, | |
683 | "--exclude/-x")) { | |
684 | goto error; | |
685 | } | |
686 | ||
687 | break; | |
688 | case OPT_LOGLEVEL: | |
689 | case OPT_LOGLEVEL_ONLY: | |
690 | if (!assign_string(&loglevel_str, item_opt->arg, | |
691 | "--loglevel/--loglevel-only")) { | |
692 | goto error; | |
693 | } | |
694 | ||
695 | loglevel_only = item_opt->descr->id == | |
696 | OPT_LOGLEVEL_ONLY; | |
697 | break; | |
20a01d15 SM |
698 | case OPT_CAPTURE: |
699 | { | |
700 | int ret; | |
701 | const char *capture_str = item_opt->arg; | |
702 | ||
703 | ret = filter_parser_ctx_create_from_filter_expression( | |
704 | capture_str, &parser_ctx); | |
705 | if (ret) { | |
706 | ERR("Failed to parse capture expression `%s`.", | |
707 | capture_str); | |
708 | goto error; | |
709 | } | |
710 | ||
711 | event_expr = ir_op_root_to_event_expr( | |
712 | parser_ctx->ir_root, | |
713 | capture_str); | |
714 | if (!event_expr) { | |
715 | /* | |
716 | * ir_op_root_to_event_expr has printed | |
717 | * an error message. | |
718 | */ | |
719 | goto error; | |
720 | } | |
721 | ||
722 | ret = lttng_dynamic_pointer_array_add_pointer( | |
723 | &res.capture_descriptors, | |
724 | event_expr); | |
725 | if (ret) { | |
726 | goto error; | |
727 | } | |
728 | ||
729 | /* | |
730 | * The ownership of event expression was | |
731 | * transferred to the dynamic array. | |
732 | */ | |
733 | event_expr = NULL; | |
734 | ||
735 | break; | |
736 | } | |
4624dad0 SM |
737 | default: |
738 | abort(); | |
739 | } | |
740 | } else { | |
741 | const struct argpar_item_non_opt *item_non_opt = | |
742 | (const struct argpar_item_non_opt *) | |
743 | item; | |
744 | ||
745 | /* | |
746 | * Don't accept two non-option arguments/tracepoint | |
747 | * names. | |
748 | */ | |
749 | if (tracepoint_name) { | |
750 | ERR("Unexpected argument '%s'", | |
751 | item_non_opt->arg); | |
752 | goto error; | |
753 | } | |
754 | ||
755 | tracepoint_name = item_non_opt->arg; | |
756 | } | |
757 | } | |
758 | ||
759 | if (event_rule_type == LTTNG_EVENT_RULE_TYPE_UNKNOWN) { | |
760 | event_rule_type = LTTNG_EVENT_RULE_TYPE_TRACEPOINT; | |
761 | } | |
762 | ||
763 | /* | |
764 | * Option -a is applicable to event rules of type tracepoint and | |
765 | * syscall, and it is equivalent to using "*" as the tracepoint name. | |
766 | */ | |
767 | if (all_events) { | |
768 | switch (event_rule_type) { | |
769 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
770 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
771 | break; | |
772 | default: | |
773 | ERR("Can't use -a/--all with %s event rules.", | |
774 | lttng_event_rule_type_str(event_rule_type)); | |
775 | goto error; | |
776 | } | |
777 | ||
778 | if (tracepoint_name) { | |
779 | ERR("Can't provide a tracepoint name with -a/--all."); | |
780 | goto error; | |
781 | } | |
782 | ||
783 | /* In which case, it's equivalent to tracepoint name "*". */ | |
784 | tracepoint_name = "*"; | |
785 | } | |
786 | ||
787 | /* | |
788 | * A tracepoint name (or -a, for the event rule types that accept it) | |
789 | * is required. | |
790 | */ | |
791 | if (!tracepoint_name) { | |
792 | ERR("Need to provide either a tracepoint name or -a/--all."); | |
793 | goto error; | |
794 | } | |
795 | ||
796 | /* | |
797 | * We don't support multiple tracepoint names for now. | |
798 | */ | |
799 | if (strchr(tracepoint_name, ',')) { | |
800 | ERR("Comma separated tracepoint names are not supported."); | |
801 | goto error; | |
802 | } | |
803 | ||
804 | /* | |
805 | * Update *argc and *argv so our caller can keep parsing what follows. | |
806 | */ | |
807 | consumed_args = argpar_state_get_ingested_orig_args(state); | |
808 | assert(consumed_args >= 0); | |
809 | *argc -= consumed_args; | |
810 | *argv += consumed_args; | |
811 | ||
812 | /* Need to specify a domain. */ | |
813 | if (domain_type == LTTNG_DOMAIN_NONE) { | |
814 | ERR("Please specify a domain (--kernel/--userspace/--jul/--log4j/--python)."); | |
815 | goto error; | |
816 | } | |
817 | ||
818 | /* Validate event rule type against domain. */ | |
819 | switch (event_rule_type) { | |
f2791161 | 820 | case LTTNG_EVENT_RULE_TYPE_KERNEL_PROBE: |
f2d09181 | 821 | case LTTNG_EVENT_RULE_TYPE_KERNEL_FUNCTION: |
1f1567a5 | 822 | case LTTNG_EVENT_RULE_TYPE_USERSPACE_PROBE: |
4624dad0 SM |
823 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: |
824 | if (domain_type != LTTNG_DOMAIN_KERNEL) { | |
825 | ERR("Event type not available for user-space tracing."); | |
826 | goto error; | |
827 | } | |
828 | break; | |
829 | ||
830 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
831 | break; | |
832 | ||
833 | default: | |
834 | abort(); | |
835 | } | |
836 | ||
837 | /* | |
838 | * Adding a filter to a probe, function or userspace-probe would be | |
839 | * denied by the kernel tracer as it's not supported at the moment. We | |
840 | * do an early check here to warn the user. | |
841 | */ | |
842 | if (filter && domain_type == LTTNG_DOMAIN_KERNEL) { | |
843 | switch (event_rule_type) { | |
844 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
845 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
846 | break; | |
847 | default: | |
848 | ERR("Filter expressions are not supported for %s event rules.", | |
849 | lttng_event_rule_type_str(event_rule_type)); | |
850 | goto error; | |
851 | } | |
852 | } | |
853 | ||
854 | /* If --exclude/-x was passed, split it into an exclusion list. */ | |
855 | if (exclude) { | |
856 | if (domain_type != LTTNG_DOMAIN_UST) { | |
857 | ERR("Event name exclusions are not yet implemented for %s event rules.", | |
858 | get_domain_str(domain_type)); | |
859 | goto error; | |
860 | } | |
861 | ||
862 | ||
863 | if (create_exclusion_list_and_validate(tracepoint_name, exclude, | |
864 | &exclusion_list) != 0) { | |
865 | ERR("Failed to create exclusion list."); | |
866 | goto error; | |
867 | } | |
868 | } | |
869 | ||
870 | if (loglevel_str && event_rule_type != LTTNG_EVENT_RULE_TYPE_TRACEPOINT) { | |
871 | ERR("Log levels are only applicable to tracepoint event rules."); | |
872 | goto error; | |
873 | } | |
874 | ||
875 | /* Finally, create the event rule object. */ | |
876 | switch (event_rule_type) { | |
877 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
878 | { | |
879 | enum lttng_event_rule_status event_rule_status; | |
880 | ||
20a01d15 SM |
881 | res.er = lttng_event_rule_tracepoint_create(domain_type); |
882 | if (!res.er) { | |
4624dad0 SM |
883 | ERR("Failed to create tracepoint event rule."); |
884 | goto error; | |
885 | } | |
886 | ||
887 | /* Set pattern. */ | |
888 | event_rule_status = lttng_event_rule_tracepoint_set_pattern( | |
20a01d15 | 889 | res.er, tracepoint_name); |
4624dad0 SM |
890 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
891 | ERR("Failed to set tracepoint event rule's pattern to '%s'.", | |
892 | tracepoint_name); | |
893 | goto error; | |
894 | } | |
895 | ||
896 | /* Set filter. */ | |
897 | if (filter) { | |
898 | event_rule_status = lttng_event_rule_tracepoint_set_filter( | |
20a01d15 | 899 | res.er, filter); |
4624dad0 SM |
900 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
901 | ERR("Failed to set tracepoint event rule's filter to '%s'.", | |
902 | filter); | |
903 | goto error; | |
904 | } | |
905 | } | |
906 | ||
907 | /* Set exclusion list. */ | |
908 | if (exclusion_list) { | |
909 | int n; | |
910 | ||
911 | for (n = 0; exclusion_list[n]; n++) { | |
912 | event_rule_status = lttng_event_rule_tracepoint_add_exclusion( | |
20a01d15 | 913 | res.er, |
4624dad0 SM |
914 | exclusion_list[n]); |
915 | if (event_rule_status != | |
916 | LTTNG_EVENT_RULE_STATUS_OK) { | |
917 | ERR("Failed to set tracepoint exclusion list element '%s'", | |
918 | exclusion_list[n]); | |
919 | goto error; | |
920 | } | |
921 | } | |
922 | } | |
923 | ||
924 | if (loglevel_str) { | |
925 | int loglevel; | |
926 | ||
927 | if (domain_type == LTTNG_DOMAIN_KERNEL) { | |
928 | ERR("Log levels are not supported by the kernel tracer."); | |
929 | goto error; | |
930 | } | |
931 | ||
932 | loglevel = parse_loglevel_string( | |
933 | loglevel_str, domain_type); | |
934 | if (loglevel < 0) { | |
935 | ERR("Failed to parse `%s` as a log level.", | |
936 | loglevel_str); | |
937 | goto error; | |
938 | } | |
939 | ||
940 | if (loglevel_only) { | |
85b05318 | 941 | log_level_rule = lttng_log_level_rule_exactly_create(loglevel); |
4624dad0 | 942 | } else { |
85b05318 JR |
943 | log_level_rule = lttng_log_level_rule_at_least_as_severe_as_create(loglevel); |
944 | } | |
945 | ||
946 | if (log_level_rule == NULL) { | |
947 | ERR("Failed to create log level rule object."); | |
948 | goto error; | |
4624dad0 SM |
949 | } |
950 | ||
85b05318 JR |
951 | event_rule_status = |
952 | lttng_event_rule_tracepoint_set_log_level_rule( | |
953 | res.er, log_level_rule); | |
954 | ||
4624dad0 SM |
955 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
956 | ERR("Failed to set log level on event fule."); | |
957 | goto error; | |
958 | } | |
959 | } | |
960 | ||
961 | break; | |
962 | } | |
f2791161 | 963 | case LTTNG_EVENT_RULE_TYPE_KERNEL_PROBE: |
4624dad0 SM |
964 | { |
965 | int ret; | |
966 | enum lttng_event_rule_status event_rule_status; | |
967 | ||
4624dad0 SM |
968 | |
969 | ret = parse_kernel_probe_opts(source, &kernel_probe_location); | |
970 | if (ret) { | |
971 | ERR("Failed to parse kernel probe location."); | |
972 | goto error; | |
973 | } | |
974 | ||
602a6d40 JR |
975 | assert(kernel_probe_location); |
976 | res.er = lttng_event_rule_kernel_probe_create(kernel_probe_location); | |
977 | if (!res.er) { | |
978 | ERR("Failed to create kprobe event rule."); | |
4624dad0 SM |
979 | goto error; |
980 | } | |
981 | ||
602a6d40 | 982 | event_rule_status = lttng_event_rule_kernel_probe_set_event_name(res.er, tracepoint_name); |
4624dad0 | 983 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
602a6d40 | 984 | ERR("Failed to set kprobe event rule's name to '%s'.", tracepoint_name); |
4624dad0 SM |
985 | goto error; |
986 | } | |
987 | ||
988 | break; | |
989 | } | |
1f1567a5 | 990 | case LTTNG_EVENT_RULE_TYPE_USERSPACE_PROBE: |
4624dad0 SM |
991 | { |
992 | int ret; | |
993 | enum lttng_event_rule_status event_rule_status; | |
994 | ||
995 | ret = parse_userspace_probe_opts( | |
996 | source, &userspace_probe_location); | |
997 | if (ret) { | |
998 | ERR("Failed to parse user space probe location."); | |
999 | goto error; | |
1000 | } | |
1001 | ||
10685de6 | 1002 | res.er = lttng_event_rule_userspace_probe_create(userspace_probe_location); |
20a01d15 SM |
1003 | if (!res.er) { |
1004 | ERR("Failed to create userspace probe event rule."); | |
4624dad0 SM |
1005 | goto error; |
1006 | } | |
1007 | ||
10685de6 JR |
1008 | event_rule_status = lttng_event_rule_userspace_probe_set_event_name( |
1009 | res.er, tracepoint_name); | |
4624dad0 SM |
1010 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1011 | ERR("Failed to set user space probe event rule's name to '%s'.", | |
1012 | tracepoint_name); | |
1013 | goto error; | |
1014 | } | |
1015 | ||
1016 | break; | |
1017 | } | |
1018 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
1019 | { | |
1020 | enum lttng_event_rule_status event_rule_status; | |
1021 | ||
20a01d15 SM |
1022 | res.er = lttng_event_rule_syscall_create(); |
1023 | if (!res.er) { | |
4624dad0 SM |
1024 | ERR("Failed to create syscall event rule."); |
1025 | goto error; | |
1026 | } | |
1027 | ||
1028 | event_rule_status = lttng_event_rule_syscall_set_pattern( | |
20a01d15 | 1029 | res.er, tracepoint_name); |
4624dad0 SM |
1030 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1031 | ERR("Failed to set syscall event rule's pattern to '%s'.", | |
1032 | tracepoint_name); | |
1033 | goto error; | |
1034 | } | |
1035 | ||
1036 | if (filter) { | |
1037 | event_rule_status = lttng_event_rule_syscall_set_filter( | |
20a01d15 | 1038 | res.er, filter); |
4624dad0 SM |
1039 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1040 | ERR("Failed to set syscall event rule's filter to '%s'.", | |
1041 | filter); | |
1042 | goto error; | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | break; | |
1047 | } | |
1048 | default: | |
1049 | abort(); | |
1050 | goto error; | |
1051 | } | |
1052 | ||
1053 | goto end; | |
1054 | ||
1055 | error: | |
20a01d15 SM |
1056 | lttng_event_rule_destroy(res.er); |
1057 | res.er = NULL; | |
1058 | lttng_dynamic_pointer_array_reset(&res.capture_descriptors); | |
4624dad0 SM |
1059 | |
1060 | end: | |
20a01d15 SM |
1061 | if (parser_ctx) { |
1062 | filter_parser_ctx_free(parser_ctx); | |
1063 | } | |
1064 | ||
1065 | lttng_event_expr_destroy(event_expr); | |
4624dad0 SM |
1066 | argpar_item_destroy(item); |
1067 | free(error); | |
1068 | argpar_state_destroy(state); | |
1069 | free(filter); | |
1070 | free(exclude); | |
1071 | free(loglevel_str); | |
6e61d0fa | 1072 | free(source); |
4624dad0 SM |
1073 | strutils_free_null_terminated_array_of_strings(exclusion_list); |
1074 | lttng_kernel_probe_location_destroy(kernel_probe_location); | |
1075 | lttng_userspace_probe_location_destroy(userspace_probe_location); | |
85b05318 | 1076 | lttng_log_level_rule_destroy(log_level_rule); |
20a01d15 | 1077 | return res; |
4624dad0 SM |
1078 | } |
1079 | ||
1080 | static | |
1081 | struct lttng_condition *handle_condition_event(int *argc, const char ***argv) | |
1082 | { | |
20a01d15 | 1083 | struct parse_event_rule_res res; |
4624dad0 | 1084 | struct lttng_condition *c; |
20a01d15 | 1085 | size_t i; |
4624dad0 | 1086 | |
20a01d15 SM |
1087 | res = parse_event_rule(argc, argv); |
1088 | if (!res.er) { | |
4624dad0 | 1089 | c = NULL; |
20a01d15 | 1090 | goto error; |
4624dad0 SM |
1091 | } |
1092 | ||
d602bd6a | 1093 | c = lttng_condition_on_event_create(res.er); |
20a01d15 SM |
1094 | lttng_event_rule_destroy(res.er); |
1095 | res.er = NULL; | |
4624dad0 | 1096 | if (!c) { |
20a01d15 SM |
1097 | goto error; |
1098 | } | |
1099 | ||
1100 | for (i = 0; i < lttng_dynamic_pointer_array_get_count(&res.capture_descriptors); | |
1101 | i++) { | |
1102 | enum lttng_condition_status status; | |
1103 | struct lttng_event_expr **expr = | |
1104 | lttng_dynamic_array_get_element( | |
1105 | &res.capture_descriptors.array, i); | |
1106 | ||
1107 | assert(expr); | |
1108 | assert(*expr); | |
d602bd6a | 1109 | status = lttng_condition_on_event_append_capture_descriptor( |
20a01d15 SM |
1110 | c, *expr); |
1111 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
81d566c9 JR |
1112 | if (status == LTTNG_CONDITION_STATUS_UNSUPPORTED) { |
1113 | ERR("The capture feature is unsupported by the event-rule condition type"); | |
1114 | } | |
1115 | ||
20a01d15 SM |
1116 | goto error; |
1117 | } | |
1118 | ||
1119 | /* Ownership of event expression moved to `c` */ | |
1120 | *expr = NULL; | |
4624dad0 SM |
1121 | } |
1122 | ||
20a01d15 SM |
1123 | goto end; |
1124 | ||
1125 | error: | |
1126 | lttng_condition_destroy(c); | |
1127 | c = NULL; | |
1128 | ||
4624dad0 | 1129 | end: |
20a01d15 SM |
1130 | lttng_dynamic_pointer_array_reset(&res.capture_descriptors); |
1131 | lttng_event_rule_destroy(res.er); | |
4624dad0 SM |
1132 | return c; |
1133 | } | |
1134 | ||
1135 | static | |
1136 | struct lttng_condition *handle_condition_session_consumed_size(int *argc, const char ***argv) | |
1137 | { | |
1138 | struct lttng_condition *cond = NULL; | |
1139 | struct argpar_state *state = NULL; | |
1140 | struct argpar_item *item = NULL; | |
1141 | const char *threshold_arg = NULL; | |
1142 | const char *session_name_arg = NULL; | |
1143 | uint64_t threshold; | |
1144 | char *error = NULL; | |
1145 | enum lttng_condition_status condition_status; | |
1146 | ||
1147 | state = argpar_state_create(*argc, *argv, event_rule_opt_descrs); | |
1148 | if (!state) { | |
1149 | ERR("Failed to allocate an argpar state."); | |
1150 | goto error; | |
1151 | } | |
1152 | ||
1153 | while (true) { | |
1154 | enum argpar_state_parse_next_status status; | |
1155 | ||
1156 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1157 | status = argpar_state_parse_next(state, &item, &error); | |
1158 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1159 | ERR("%s", error); | |
1160 | goto error; | |
1161 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1162 | /* Just stop parsing here. */ | |
1163 | break; | |
1164 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1165 | break; | |
1166 | } | |
1167 | ||
1168 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1169 | ||
1170 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
1171 | const struct argpar_item_opt *item_opt = | |
1172 | (const struct argpar_item_opt *) item; | |
1173 | ||
1174 | switch (item_opt->descr->id) { | |
1175 | default: | |
1176 | abort(); | |
1177 | } | |
1178 | } else { | |
1179 | const struct argpar_item_non_opt *item_non_opt; | |
1180 | ||
1181 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1182 | ||
1183 | item_non_opt = (const struct argpar_item_non_opt *) item; | |
1184 | ||
1185 | switch (item_non_opt->non_opt_index) { | |
1186 | case 0: | |
1187 | session_name_arg = item_non_opt->arg; | |
1188 | break; | |
1189 | case 1: | |
1190 | threshold_arg = item_non_opt->arg; | |
1191 | break; | |
1192 | default: | |
1193 | ERR("Unexpected argument `%s`.", | |
1194 | item_non_opt->arg); | |
1195 | goto error; | |
1196 | } | |
1197 | } | |
1198 | } | |
1199 | ||
1200 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1201 | *argv += argpar_state_get_ingested_orig_args(state); | |
1202 | ||
1203 | if (!session_name_arg) { | |
1204 | ERR("Missing session name argument."); | |
1205 | goto error; | |
1206 | } | |
1207 | ||
1208 | if (!threshold_arg) { | |
1209 | ERR("Missing threshold argument."); | |
1210 | goto error; | |
1211 | } | |
1212 | ||
1213 | if (utils_parse_size_suffix(threshold_arg, &threshold) != 0) { | |
1214 | ERR("Failed to parse `%s` as a size.", threshold_arg); | |
1215 | goto error; | |
1216 | } | |
1217 | ||
1218 | cond = lttng_condition_session_consumed_size_create(); | |
1219 | if (!cond) { | |
1220 | ERR("Failed to allocate a session consumed size condition."); | |
1221 | goto error; | |
1222 | } | |
1223 | ||
1224 | condition_status = lttng_condition_session_consumed_size_set_session_name( | |
1225 | cond, session_name_arg); | |
1226 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
1227 | ERR("Failed to set session consumed size condition's session name to '%s'.", | |
1228 | session_name_arg); | |
1229 | goto error; | |
1230 | } | |
1231 | ||
1232 | condition_status = lttng_condition_session_consumed_size_set_threshold( | |
1233 | cond, threshold); | |
1234 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
1235 | ERR("Failed to set session consumed size condition threshold."); | |
1236 | goto error; | |
1237 | } | |
1238 | ||
1239 | goto end; | |
1240 | ||
1241 | error: | |
1242 | lttng_condition_destroy(cond); | |
1243 | cond = NULL; | |
1244 | ||
1245 | end: | |
1246 | argpar_state_destroy(state); | |
1247 | argpar_item_destroy(item); | |
1248 | free(error); | |
1249 | return cond; | |
1250 | } | |
1251 | ||
1252 | static | |
1253 | struct lttng_condition *handle_condition_buffer_usage_high(int *argc, const char ***argv) | |
1254 | { | |
1255 | ERR("High buffer usage threshold conditions are unsupported for the moment."); | |
1256 | return NULL; | |
1257 | } | |
1258 | ||
1259 | static | |
1260 | struct lttng_condition *handle_condition_buffer_usage_low(int *argc, const char ***argv) | |
1261 | { | |
1262 | ERR("Low buffer usage threshold conditions are unsupported for the moment."); | |
1263 | return NULL; | |
1264 | } | |
1265 | ||
1266 | static | |
1267 | struct lttng_condition *handle_condition_session_rotation_ongoing(int *argc, const char ***argv) | |
1268 | { | |
1269 | ERR("Session rotation ongoing conditions are unsupported for the moment."); | |
1270 | return NULL; | |
1271 | } | |
1272 | ||
1273 | static | |
1274 | struct lttng_condition *handle_condition_session_rotation_completed(int *argc, const char ***argv) | |
1275 | { | |
1276 | ERR("Session rotation completed conditions are unsupported for the moment."); | |
1277 | return NULL; | |
1278 | } | |
1279 | ||
1280 | struct condition_descr { | |
1281 | const char *name; | |
1282 | struct lttng_condition *(*handler) (int *argc, const char ***argv); | |
1283 | }; | |
1284 | ||
1285 | static const | |
1286 | struct condition_descr condition_descrs[] = { | |
1287 | { "on-event", handle_condition_event }, | |
1288 | { "on-session-consumed-size", handle_condition_session_consumed_size }, | |
1289 | { "on-buffer-usage-high", handle_condition_buffer_usage_high }, | |
1290 | { "on-buffer-usage-low", handle_condition_buffer_usage_low }, | |
1291 | { "on-session-rotation-ongoing", handle_condition_session_rotation_ongoing }, | |
1292 | { "on-session-rotation-completed", handle_condition_session_rotation_completed }, | |
1293 | }; | |
1294 | ||
1295 | static | |
1296 | struct lttng_condition *parse_condition(int *argc, const char ***argv) | |
1297 | { | |
1298 | int i; | |
1299 | struct lttng_condition *cond; | |
1300 | const char *condition_name; | |
1301 | const struct condition_descr *descr = NULL; | |
1302 | ||
1303 | if (*argc == 0) { | |
1304 | ERR("Missing condition name."); | |
1305 | goto error; | |
1306 | } | |
1307 | ||
1308 | condition_name = (*argv)[0]; | |
1309 | ||
1310 | (*argc)--; | |
1311 | (*argv)++; | |
1312 | ||
1313 | for (i = 0; i < ARRAY_SIZE(condition_descrs); i++) { | |
1314 | if (strcmp(condition_name, condition_descrs[i].name) == 0) { | |
1315 | descr = &condition_descrs[i]; | |
1316 | break; | |
1317 | } | |
1318 | } | |
1319 | ||
1320 | if (!descr) { | |
1321 | ERR("Unknown condition name '%s'", condition_name); | |
1322 | goto error; | |
1323 | } | |
1324 | ||
1325 | cond = descr->handler(argc, argv); | |
1326 | if (!cond) { | |
1327 | /* The handler has already printed an error message. */ | |
1328 | goto error; | |
1329 | } | |
1330 | ||
1331 | goto end; | |
1332 | error: | |
1333 | cond = NULL; | |
1334 | end: | |
1335 | return cond; | |
1336 | } | |
bbadb5e0 JR |
1337 | |
1338 | static struct lttng_rate_policy *parse_rate_policy(const char *policy_str) | |
1339 | { | |
1340 | int num_token; | |
1341 | char **tokens = NULL; | |
1342 | struct lttng_rate_policy *policy = NULL; | |
1343 | enum lttng_rate_policy_type policy_type; | |
1344 | unsigned long long value; | |
1345 | char *policy_type_str; | |
1346 | char *policy_value_str; | |
1347 | ||
1348 | assert(policy_str); | |
1349 | ||
1350 | /* | |
1351 | * rate policy fields are separated by ':'. | |
1352 | */ | |
1353 | tokens = strutils_split(policy_str, ':', 1); | |
1354 | num_token = strutils_array_of_strings_len(tokens); | |
1355 | ||
1356 | /* | |
1357 | * Early sanity check that the number of parameter is exactly 2. | |
1358 | * i.e : type:value | |
1359 | */ | |
1360 | if (num_token != 2) { | |
1361 | ERR("Rate policy format is invalid."); | |
1362 | goto end; | |
1363 | } | |
1364 | ||
1365 | policy_type_str = tokens[0]; | |
1366 | policy_value_str = tokens[1]; | |
1367 | ||
1368 | /* Parse the type. */ | |
1369 | if (strcmp(policy_type_str, "once-after") == 0) { | |
1370 | policy_type = LTTNG_RATE_POLICY_TYPE_ONCE_AFTER_N; | |
1371 | } else if (strcmp(policy_type_str, "every") == 0) { | |
1372 | policy_type = LTTNG_RATE_POLICY_TYPE_EVERY_N; | |
1373 | } else { | |
1374 | ERR("Rate policy type `%s` unknown.", policy_type_str); | |
1375 | goto end; | |
1376 | } | |
1377 | ||
1378 | /* Parse the value. */ | |
1379 | if (utils_parse_unsigned_long_long(policy_value_str, &value) != 0) { | |
1380 | ERR("Failed to parse rate policy value `%s` as an integer.", | |
1381 | policy_value_str); | |
1382 | goto end; | |
1383 | } | |
1384 | ||
1385 | if (value == 0) { | |
1386 | ERR("Rate policy value `%s` must be > 0.", policy_value_str); | |
1387 | goto end; | |
1388 | } | |
1389 | ||
1390 | switch (policy_type) { | |
1391 | case LTTNG_RATE_POLICY_TYPE_EVERY_N: | |
1392 | policy = lttng_rate_policy_every_n_create(value); | |
1393 | break; | |
1394 | case LTTNG_RATE_POLICY_TYPE_ONCE_AFTER_N: | |
1395 | policy = lttng_rate_policy_once_after_n_create(value); | |
1396 | break; | |
1397 | default: | |
1398 | abort(); | |
1399 | } | |
1400 | ||
1401 | if (policy == NULL) { | |
1402 | ERR("Failed to create rate policy `%s`.", policy_str); | |
1403 | } | |
1404 | ||
1405 | end: | |
1406 | strutils_free_null_terminated_array_of_strings(tokens); | |
1407 | return policy; | |
1408 | } | |
1409 | ||
e45dd625 | 1410 | static const struct argpar_opt_descr notify_action_opt_descrs[] = { |
bbadb5e0 | 1411 | { OPT_RATE_POLICY, '\0', "rate-policy", true }, |
e45dd625 JR |
1412 | ARGPAR_OPT_DESCR_SENTINEL |
1413 | }; | |
4624dad0 | 1414 | |
4624dad0 SM |
1415 | static |
1416 | struct lttng_action *handle_action_notify(int *argc, const char ***argv) | |
1417 | { | |
e45dd625 JR |
1418 | struct lttng_action *action = NULL; |
1419 | struct argpar_state *state = NULL; | |
1420 | struct argpar_item *item = NULL; | |
1421 | char *error = NULL; | |
7f4d5b07 | 1422 | struct lttng_rate_policy *policy = NULL; |
4624dad0 | 1423 | |
e45dd625 JR |
1424 | state = argpar_state_create(*argc, *argv, notify_action_opt_descrs); |
1425 | if (!state) { | |
1426 | ERR("Failed to allocate an argpar state."); | |
1427 | goto error; | |
1428 | } | |
1429 | ||
1430 | while (true) { | |
1431 | enum argpar_state_parse_next_status status; | |
1432 | ||
1433 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1434 | status = argpar_state_parse_next(state, &item, &error); | |
1435 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1436 | ERR("%s", error); | |
1437 | goto error; | |
1438 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1439 | /* Just stop parsing here. */ | |
1440 | break; | |
1441 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1442 | break; | |
1443 | } | |
1444 | ||
1445 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1446 | ||
1447 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
1448 | const struct argpar_item_opt *item_opt = | |
1449 | (const struct argpar_item_opt *) item; | |
1450 | ||
1451 | switch (item_opt->descr->id) { | |
bbadb5e0 | 1452 | case OPT_RATE_POLICY: |
e45dd625 | 1453 | { |
bbadb5e0 JR |
1454 | policy = parse_rate_policy(item_opt->arg); |
1455 | if (!policy) { | |
e45dd625 JR |
1456 | goto error; |
1457 | } | |
e45dd625 JR |
1458 | break; |
1459 | } | |
e45dd625 JR |
1460 | default: |
1461 | abort(); | |
1462 | } | |
1463 | } else { | |
1464 | const struct argpar_item_non_opt *item_non_opt; | |
1465 | ||
1466 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1467 | ||
1468 | item_non_opt = (const struct argpar_item_non_opt *) item; | |
1469 | ||
1470 | switch (item_non_opt->non_opt_index) { | |
1471 | default: | |
1472 | ERR("Unexpected argument `%s`.", | |
1473 | item_non_opt->arg); | |
1474 | goto error; | |
1475 | } | |
1476 | } | |
1477 | } | |
1478 | ||
1479 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1480 | *argv += argpar_state_get_ingested_orig_args(state); | |
1481 | ||
e45dd625 JR |
1482 | action = lttng_action_notify_create(); |
1483 | if (!action) { | |
1484 | ERR("Failed to create notify action"); | |
1485 | goto error; | |
1486 | } | |
1487 | ||
1488 | if (policy) { | |
1489 | enum lttng_action_status status; | |
7f4d5b07 | 1490 | status = lttng_action_notify_set_rate_policy(action, policy); |
e45dd625 | 1491 | if (status != LTTNG_ACTION_STATUS_OK) { |
7f4d5b07 | 1492 | ERR("Failed to set rate policy"); |
e45dd625 JR |
1493 | goto error; |
1494 | } | |
1495 | } | |
1496 | ||
1497 | goto end; | |
1498 | ||
1499 | error: | |
1500 | lttng_action_destroy(action); | |
1501 | action = NULL; | |
e45dd625 | 1502 | end: |
55c6294d | 1503 | free(error); |
7f4d5b07 | 1504 | lttng_rate_policy_destroy(policy); |
e45dd625 JR |
1505 | argpar_state_destroy(state); |
1506 | argpar_item_destroy(item); | |
1507 | return action; | |
1508 | } | |
4624dad0 SM |
1509 | |
1510 | /* | |
e45dd625 | 1511 | * Generic handler for a kind of action that takes a session name and an |
7f4d5b07 | 1512 | * optional rate policy. |
4624dad0 SM |
1513 | */ |
1514 | ||
e45dd625 JR |
1515 | static struct lttng_action *handle_action_simple_session_with_policy(int *argc, |
1516 | const char ***argv, | |
4624dad0 | 1517 | struct lttng_action *(*create_action_cb)(void), |
e45dd625 JR |
1518 | enum lttng_action_status (*set_session_name_cb)( |
1519 | struct lttng_action *, const char *), | |
7f4d5b07 | 1520 | enum lttng_action_status (*set_rate_policy_cb)( |
e45dd625 | 1521 | struct lttng_action *, |
7f4d5b07 | 1522 | const struct lttng_rate_policy *), |
4624dad0 SM |
1523 | const char *action_name) |
1524 | { | |
1525 | struct lttng_action *action = NULL; | |
1526 | struct argpar_state *state = NULL; | |
1527 | struct argpar_item *item = NULL; | |
1528 | const char *session_name_arg = NULL; | |
1529 | char *error = NULL; | |
1530 | enum lttng_action_status action_status; | |
7f4d5b07 | 1531 | struct lttng_rate_policy *policy = NULL; |
e45dd625 JR |
1532 | |
1533 | assert(set_session_name_cb); | |
7f4d5b07 | 1534 | assert(set_rate_policy_cb); |
e45dd625 | 1535 | |
7f4d5b07 | 1536 | const struct argpar_opt_descr rate_policy_opt_descrs[] = { |
bbadb5e0 | 1537 | { OPT_RATE_POLICY, '\0', "rate-policy", true }, |
e45dd625 JR |
1538 | ARGPAR_OPT_DESCR_SENTINEL |
1539 | }; | |
1540 | ||
7f4d5b07 | 1541 | state = argpar_state_create(*argc, *argv, rate_policy_opt_descrs); |
4624dad0 SM |
1542 | if (!state) { |
1543 | ERR("Failed to allocate an argpar state."); | |
1544 | goto error; | |
1545 | } | |
1546 | ||
1547 | while (true) { | |
1548 | enum argpar_state_parse_next_status status; | |
4624dad0 SM |
1549 | |
1550 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1551 | status = argpar_state_parse_next(state, &item, &error); | |
1552 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1553 | ERR("%s", error); | |
1554 | goto error; | |
e45dd625 JR |
1555 | } else if (status == |
1556 | ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
4624dad0 SM |
1557 | /* Just stop parsing here. */ |
1558 | break; | |
1559 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1560 | break; | |
1561 | } | |
1562 | ||
1563 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
e45dd625 JR |
1564 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { |
1565 | const struct argpar_item_opt *item_opt = | |
1566 | (const struct argpar_item_opt *) item; | |
4624dad0 | 1567 | |
e45dd625 | 1568 | switch (item_opt->descr->id) { |
bbadb5e0 | 1569 | case OPT_RATE_POLICY: |
e45dd625 | 1570 | { |
bbadb5e0 JR |
1571 | policy = parse_rate_policy(item_opt->arg); |
1572 | if (!policy) { | |
e45dd625 JR |
1573 | goto error; |
1574 | } | |
e45dd625 JR |
1575 | break; |
1576 | } | |
e45dd625 JR |
1577 | default: |
1578 | abort(); | |
1579 | } | |
1580 | } else { | |
1581 | const struct argpar_item_non_opt *item_non_opt; | |
1582 | item_non_opt = (const struct argpar_item_non_opt *) item; | |
1583 | ||
1584 | switch (item_non_opt->non_opt_index) { | |
1585 | case 0: | |
1586 | session_name_arg = item_non_opt->arg; | |
1587 | break; | |
1588 | default: | |
1589 | ERR("Unexpected argument `%s`.", | |
1590 | item_non_opt->arg); | |
1591 | goto error; | |
1592 | } | |
4624dad0 SM |
1593 | } |
1594 | } | |
1595 | ||
1596 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1597 | *argv += argpar_state_get_ingested_orig_args(state); | |
1598 | ||
1599 | if (!session_name_arg) { | |
1600 | ERR("Missing session name."); | |
1601 | goto error; | |
1602 | } | |
1603 | ||
1604 | action = create_action_cb(); | |
1605 | if (!action) { | |
1606 | ERR("Failed to allocate %s session action.", action_name); | |
1607 | goto error; | |
1608 | } | |
1609 | ||
1610 | action_status = set_session_name_cb(action, session_name_arg); | |
1611 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1612 | ERR("Failed to set action %s session's session name to '%s'.", | |
1613 | action_name, session_name_arg); | |
1614 | goto error; | |
1615 | } | |
1616 | ||
e45dd625 | 1617 | if (policy) { |
7f4d5b07 | 1618 | action_status = set_rate_policy_cb(action, policy); |
e45dd625 | 1619 | if (action_status != LTTNG_ACTION_STATUS_OK) { |
7f4d5b07 | 1620 | ERR("Failed to set rate policy"); |
e45dd625 JR |
1621 | goto error; |
1622 | } | |
1623 | } | |
1624 | ||
4624dad0 SM |
1625 | goto end; |
1626 | ||
1627 | error: | |
1628 | lttng_action_destroy(action); | |
1629 | action = NULL; | |
97abbc84 | 1630 | argpar_item_destroy(item); |
4624dad0 | 1631 | end: |
7f4d5b07 | 1632 | lttng_rate_policy_destroy(policy); |
cb1b81ea | 1633 | free(error); |
b78ef509 | 1634 | argpar_state_destroy(state); |
4624dad0 SM |
1635 | return action; |
1636 | } | |
1637 | ||
1638 | static | |
1639 | struct lttng_action *handle_action_start_session(int *argc, | |
1640 | const char ***argv) | |
1641 | { | |
e45dd625 JR |
1642 | return handle_action_simple_session_with_policy(argc, argv, |
1643 | lttng_action_start_session_create, | |
1644 | lttng_action_start_session_set_session_name, | |
7f4d5b07 | 1645 | lttng_action_start_session_set_rate_policy, "start"); |
4624dad0 SM |
1646 | } |
1647 | ||
1648 | static | |
1649 | struct lttng_action *handle_action_stop_session(int *argc, | |
1650 | const char ***argv) | |
1651 | { | |
e45dd625 JR |
1652 | return handle_action_simple_session_with_policy(argc, argv, |
1653 | lttng_action_stop_session_create, | |
1654 | lttng_action_stop_session_set_session_name, | |
7f4d5b07 | 1655 | lttng_action_stop_session_set_rate_policy, "stop"); |
4624dad0 SM |
1656 | } |
1657 | ||
1658 | static | |
1659 | struct lttng_action *handle_action_rotate_session(int *argc, | |
1660 | const char ***argv) | |
1661 | { | |
e45dd625 | 1662 | return handle_action_simple_session_with_policy(argc, argv, |
4624dad0 SM |
1663 | lttng_action_rotate_session_create, |
1664 | lttng_action_rotate_session_set_session_name, | |
7f4d5b07 | 1665 | lttng_action_rotate_session_set_rate_policy, |
4624dad0 SM |
1666 | "rotate"); |
1667 | } | |
1668 | ||
1669 | static const struct argpar_opt_descr snapshot_action_opt_descrs[] = { | |
1670 | { OPT_NAME, 'n', "name", true }, | |
1671 | { OPT_MAX_SIZE, 'm', "max-size", true }, | |
1672 | { OPT_CTRL_URL, '\0', "ctrl-url", true }, | |
1673 | { OPT_DATA_URL, '\0', "data-url", true }, | |
1674 | { OPT_URL, '\0', "url", true }, | |
1675 | { OPT_PATH, '\0', "path", true }, | |
bbadb5e0 | 1676 | { OPT_RATE_POLICY, '\0', "rate-policy", true }, |
4624dad0 SM |
1677 | ARGPAR_OPT_DESCR_SENTINEL |
1678 | }; | |
1679 | ||
1680 | static | |
1681 | struct lttng_action *handle_action_snapshot_session(int *argc, | |
1682 | const char ***argv) | |
1683 | { | |
1684 | struct lttng_action *action = NULL; | |
1685 | struct argpar_state *state = NULL; | |
1686 | struct argpar_item *item = NULL; | |
1687 | const char *session_name_arg = NULL; | |
1688 | char *snapshot_name_arg = NULL; | |
1689 | char *ctrl_url_arg = NULL; | |
1690 | char *data_url_arg = NULL; | |
1691 | char *max_size_arg = NULL; | |
1692 | char *url_arg = NULL; | |
1693 | char *path_arg = NULL; | |
1694 | char *error = NULL; | |
1695 | enum lttng_action_status action_status; | |
1696 | struct lttng_snapshot_output *snapshot_output = NULL; | |
7f4d5b07 | 1697 | struct lttng_rate_policy *policy = NULL; |
4624dad0 SM |
1698 | int ret; |
1699 | unsigned int locations_specified = 0; | |
1700 | ||
1701 | state = argpar_state_create(*argc, *argv, snapshot_action_opt_descrs); | |
1702 | if (!state) { | |
1703 | ERR("Failed to allocate an argpar state."); | |
1704 | goto error; | |
1705 | } | |
1706 | ||
1707 | while (true) { | |
1708 | enum argpar_state_parse_next_status status; | |
1709 | ||
1710 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1711 | status = argpar_state_parse_next(state, &item, &error); | |
1712 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1713 | ERR("%s", error); | |
1714 | goto error; | |
1715 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1716 | /* Just stop parsing here. */ | |
1717 | break; | |
1718 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1719 | break; | |
1720 | } | |
1721 | ||
1722 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1723 | ||
1724 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
1725 | const struct argpar_item_opt *item_opt = | |
1726 | (const struct argpar_item_opt *) item; | |
1727 | ||
1728 | switch (item_opt->descr->id) { | |
1729 | case OPT_NAME: | |
1730 | if (!assign_string(&snapshot_name_arg, item_opt->arg, "--name/-n")) { | |
1731 | goto error; | |
1732 | } | |
1733 | ||
1734 | break; | |
1735 | case OPT_MAX_SIZE: | |
1736 | if (!assign_string(&max_size_arg, item_opt->arg, "--max-size/-m")) { | |
1737 | goto error; | |
1738 | } | |
1739 | ||
1740 | break; | |
1741 | case OPT_CTRL_URL: | |
1742 | if (!assign_string(&ctrl_url_arg, item_opt->arg, "--ctrl-url")) { | |
1743 | goto error; | |
1744 | } | |
1745 | ||
1746 | break; | |
1747 | case OPT_DATA_URL: | |
1748 | if (!assign_string(&data_url_arg, item_opt->arg, "--data-url")) { | |
1749 | goto error; | |
1750 | } | |
1751 | ||
1752 | break; | |
1753 | case OPT_URL: | |
1754 | if (!assign_string(&url_arg, item_opt->arg, "--url")) { | |
1755 | goto error; | |
1756 | } | |
1757 | ||
1758 | break; | |
1759 | case OPT_PATH: | |
1760 | if (!assign_string(&path_arg, item_opt->arg, "--path")) { | |
1761 | goto error; | |
1762 | } | |
1763 | ||
1764 | break; | |
bbadb5e0 | 1765 | case OPT_RATE_POLICY: |
e45dd625 | 1766 | { |
bbadb5e0 JR |
1767 | policy = parse_rate_policy(item_opt->arg); |
1768 | if (!policy) { | |
e45dd625 JR |
1769 | goto error; |
1770 | } | |
e45dd625 JR |
1771 | break; |
1772 | } | |
4624dad0 SM |
1773 | default: |
1774 | abort(); | |
1775 | } | |
1776 | } else { | |
1777 | const struct argpar_item_non_opt *item_non_opt; | |
1778 | ||
1779 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1780 | ||
1781 | item_non_opt = (const struct argpar_item_non_opt *) item; | |
1782 | ||
1783 | switch (item_non_opt->non_opt_index) { | |
1784 | case 0: | |
1785 | session_name_arg = item_non_opt->arg; | |
1786 | break; | |
1787 | default: | |
1788 | ERR("Unexpected argument `%s`.", | |
1789 | item_non_opt->arg); | |
1790 | goto error; | |
1791 | } | |
1792 | } | |
1793 | } | |
1794 | ||
1795 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1796 | *argv += argpar_state_get_ingested_orig_args(state); | |
1797 | ||
1798 | if (!session_name_arg) { | |
1799 | ERR("Missing session name."); | |
1800 | goto error; | |
1801 | } | |
1802 | ||
1803 | /* --ctrl-url and --data-url must come in pair. */ | |
1804 | if (ctrl_url_arg && !data_url_arg) { | |
1805 | ERR("--ctrl-url is specified, but --data-url is missing."); | |
1806 | goto error; | |
1807 | } | |
1808 | ||
1809 | if (!ctrl_url_arg && data_url_arg) { | |
1810 | ERR("--data-url is specified, but --ctrl-url is missing."); | |
1811 | goto error; | |
1812 | } | |
1813 | ||
1814 | locations_specified += !!(ctrl_url_arg || data_url_arg); | |
1815 | locations_specified += !!url_arg; | |
1816 | locations_specified += !!path_arg; | |
1817 | ||
1818 | /* --ctrl-url/--data-url, --url and --path are mutually exclusive. */ | |
1819 | if (locations_specified > 1) { | |
1820 | ERR("The --ctrl-url/--data-url, --url, and --path options can't be used together."); | |
1821 | goto error; | |
1822 | } | |
1823 | ||
1824 | /* | |
1825 | * Did the user specify an option that implies using a | |
1826 | * custom/unregistered output? | |
1827 | */ | |
1828 | if (url_arg || ctrl_url_arg || path_arg) { | |
1829 | snapshot_output = lttng_snapshot_output_create(); | |
1830 | if (!snapshot_output) { | |
1831 | ERR("Failed to allocate a snapshot output."); | |
1832 | goto error; | |
1833 | } | |
1834 | } | |
1835 | ||
1836 | action = lttng_action_snapshot_session_create(); | |
1837 | if (!action) { | |
1838 | ERR("Failed to allocate snapshot session action."); | |
1839 | goto error; | |
1840 | } | |
1841 | ||
1842 | action_status = lttng_action_snapshot_session_set_session_name( | |
1843 | action, session_name_arg); | |
1844 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1845 | ERR("Failed to set action snapshot session's session name to '%s'.", | |
1846 | session_name_arg); | |
1847 | goto error; | |
1848 | } | |
1849 | ||
1850 | if (snapshot_name_arg) { | |
1851 | if (!snapshot_output) { | |
1852 | ERR("Can't provide a snapshot output name without a snapshot output destination."); | |
1853 | goto error; | |
1854 | } | |
1855 | ||
1856 | ret = lttng_snapshot_output_set_name( | |
1857 | snapshot_name_arg, snapshot_output); | |
1858 | if (ret != 0) { | |
1859 | ERR("Failed to set name of snapshot output."); | |
1860 | goto error; | |
1861 | } | |
1862 | } | |
1863 | ||
1864 | if (max_size_arg) { | |
1865 | uint64_t max_size; | |
1866 | ||
1867 | if (!snapshot_output) { | |
1868 | ERR("Can't provide a snapshot output max size without a snapshot output destination."); | |
1869 | goto error; | |
1870 | } | |
1871 | ||
1872 | ret = utils_parse_size_suffix(max_size_arg, &max_size); | |
1873 | if (ret != 0) { | |
1874 | ERR("Failed to parse `%s` as a size.", max_size_arg); | |
1875 | goto error; | |
1876 | } | |
1877 | ||
1878 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1879 | if (ret != 0) { | |
1880 | ERR("Failed to set snapshot output's max size to %" PRIu64 " bytes.", | |
1881 | max_size); | |
1882 | goto error; | |
1883 | } | |
1884 | } | |
1885 | ||
1886 | if (url_arg) { | |
1887 | int num_uris; | |
1888 | struct lttng_uri *uris; | |
1889 | ||
1890 | if (!strstr(url_arg, "://")) { | |
1891 | ERR("Failed to parse '%s' as an URL.", url_arg); | |
1892 | goto error; | |
1893 | } | |
1894 | ||
1895 | num_uris = uri_parse_str_urls(url_arg, NULL, &uris); | |
1896 | if (num_uris < 1) { | |
1897 | ERR("Failed to parse '%s' as an URL.", url_arg); | |
1898 | goto error; | |
1899 | } | |
1900 | ||
1901 | if (uris[0].dtype == LTTNG_DST_PATH) { | |
1902 | ret = lttng_snapshot_output_set_local_path( | |
1903 | uris[0].dst.path, snapshot_output); | |
1904 | free(uris); | |
1905 | if (ret != 0) { | |
1906 | ERR("Failed to assign '%s' as a local destination.", | |
1907 | url_arg); | |
1908 | goto error; | |
1909 | } | |
1910 | } else { | |
1911 | ret = lttng_snapshot_output_set_network_url( | |
1912 | url_arg, snapshot_output); | |
1913 | free(uris); | |
1914 | if (ret != 0) { | |
1915 | ERR("Failed to assign '%s' as a network URL.", | |
1916 | url_arg); | |
1917 | goto error; | |
1918 | } | |
1919 | } | |
1920 | } | |
1921 | ||
1922 | if (path_arg) { | |
1923 | ret = lttng_snapshot_output_set_local_path( | |
1924 | path_arg, snapshot_output); | |
1925 | if (ret != 0) { | |
1926 | ERR("Failed to parse '%s' as a local path.", path_arg); | |
1927 | goto error; | |
1928 | } | |
1929 | } | |
1930 | ||
1931 | if (ctrl_url_arg) { | |
1932 | /* | |
1933 | * Two argument form, network output with separate control and | |
1934 | * data URLs. | |
1935 | */ | |
1936 | ret = lttng_snapshot_output_set_network_urls( | |
1937 | ctrl_url_arg, data_url_arg, snapshot_output); | |
1938 | if (ret != 0) { | |
1939 | ERR("Failed to parse `%s` and `%s` as control and data URLs.", | |
1940 | ctrl_url_arg, data_url_arg); | |
1941 | goto error; | |
1942 | } | |
1943 | } | |
1944 | ||
1945 | if (snapshot_output) { | |
1946 | action_status = lttng_action_snapshot_session_set_output( | |
1947 | action, snapshot_output); | |
1948 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1949 | ERR("Failed to set snapshot session action's output."); | |
1950 | goto error; | |
1951 | } | |
1952 | ||
1953 | /* Ownership of `snapshot_output` has been transferred to the action. */ | |
1954 | snapshot_output = NULL; | |
1955 | } | |
1956 | ||
e45dd625 JR |
1957 | if (policy) { |
1958 | enum lttng_action_status status; | |
7f4d5b07 | 1959 | status = lttng_action_snapshot_session_set_rate_policy( |
e45dd625 JR |
1960 | action, policy); |
1961 | if (status != LTTNG_ACTION_STATUS_OK) { | |
7f4d5b07 | 1962 | ERR("Failed to set rate policy"); |
e45dd625 JR |
1963 | goto error; |
1964 | } | |
1965 | } | |
1966 | ||
4624dad0 SM |
1967 | goto end; |
1968 | ||
1969 | error: | |
1970 | lttng_action_destroy(action); | |
1971 | action = NULL; | |
1972 | free(error); | |
1973 | end: | |
1974 | free(snapshot_name_arg); | |
1975 | free(path_arg); | |
1976 | free(url_arg); | |
1977 | free(ctrl_url_arg); | |
1978 | free(data_url_arg); | |
1979 | free(snapshot_output); | |
f6b73530 | 1980 | free(max_size_arg); |
7f4d5b07 | 1981 | lttng_rate_policy_destroy(policy); |
4624dad0 | 1982 | argpar_state_destroy(state); |
97abbc84 | 1983 | argpar_item_destroy(item); |
4624dad0 SM |
1984 | return action; |
1985 | } | |
1986 | ||
1987 | struct action_descr { | |
1988 | const char *name; | |
1989 | struct lttng_action *(*handler) (int *argc, const char ***argv); | |
1990 | }; | |
1991 | ||
1992 | static const | |
1993 | struct action_descr action_descrs[] = { | |
1994 | { "notify", handle_action_notify }, | |
1995 | { "start-session", handle_action_start_session }, | |
1996 | { "stop-session", handle_action_stop_session }, | |
1997 | { "rotate-session", handle_action_rotate_session }, | |
1998 | { "snapshot-session", handle_action_snapshot_session }, | |
1999 | }; | |
2000 | ||
2001 | static | |
2002 | struct lttng_action *parse_action(int *argc, const char ***argv) | |
2003 | { | |
2004 | int i; | |
2005 | struct lttng_action *action; | |
2006 | const char *action_name; | |
2007 | const struct action_descr *descr = NULL; | |
2008 | ||
2009 | if (*argc == 0) { | |
2010 | ERR("Missing action name."); | |
2011 | goto error; | |
2012 | } | |
2013 | ||
2014 | action_name = (*argv)[0]; | |
2015 | ||
2016 | (*argc)--; | |
2017 | (*argv)++; | |
2018 | ||
2019 | for (i = 0; i < ARRAY_SIZE(action_descrs); i++) { | |
2020 | if (strcmp(action_name, action_descrs[i].name) == 0) { | |
2021 | descr = &action_descrs[i]; | |
2022 | break; | |
2023 | } | |
2024 | } | |
2025 | ||
2026 | if (!descr) { | |
2027 | ERR("Unknown action name: %s", action_name); | |
2028 | goto error; | |
2029 | } | |
2030 | ||
2031 | action = descr->handler(argc, argv); | |
2032 | if (!action) { | |
2033 | /* The handler has already printed an error message. */ | |
2034 | goto error; | |
2035 | } | |
2036 | ||
2037 | goto end; | |
2038 | error: | |
2039 | action = NULL; | |
2040 | end: | |
2041 | return action; | |
2042 | } | |
2043 | ||
2044 | static const | |
2045 | struct argpar_opt_descr add_trigger_options[] = { | |
2046 | { OPT_HELP, 'h', "help", false }, | |
2047 | { OPT_LIST_OPTIONS, '\0', "list-options", false }, | |
2048 | { OPT_CONDITION, '\0', "condition", false }, | |
2049 | { OPT_ACTION, '\0', "action", false }, | |
2050 | { OPT_ID, '\0', "id", true }, | |
4624dad0 SM |
2051 | { OPT_USER_ID, '\0', "user-id", true }, |
2052 | ARGPAR_OPT_DESCR_SENTINEL, | |
2053 | }; | |
2054 | ||
2055 | static | |
2056 | void lttng_actions_destructor(void *p) | |
2057 | { | |
2058 | struct lttng_action *action = p; | |
2059 | ||
2060 | lttng_action_destroy(action); | |
2061 | } | |
2062 | ||
2063 | int cmd_add_trigger(int argc, const char **argv) | |
2064 | { | |
2065 | int ret; | |
2066 | int my_argc = argc - 1; | |
2067 | const char **my_argv = argv + 1; | |
2068 | struct lttng_condition *condition = NULL; | |
2069 | struct lttng_dynamic_pointer_array actions; | |
2070 | struct argpar_state *argpar_state = NULL; | |
2071 | struct argpar_item *argpar_item = NULL; | |
2072 | struct lttng_action *action_group = NULL; | |
2073 | struct lttng_action *action = NULL; | |
2074 | struct lttng_trigger *trigger = NULL; | |
2075 | char *error = NULL; | |
2076 | char *id = NULL; | |
2077 | int i; | |
4624dad0 SM |
2078 | char *user_id = NULL; |
2079 | ||
2080 | lttng_dynamic_pointer_array_init(&actions, lttng_actions_destructor); | |
2081 | ||
2082 | while (true) { | |
2083 | enum argpar_state_parse_next_status status; | |
2084 | const struct argpar_item_opt *item_opt; | |
2085 | int ingested_args; | |
2086 | ||
2087 | argpar_state_destroy(argpar_state); | |
2088 | argpar_state = argpar_state_create(my_argc, my_argv, | |
2089 | add_trigger_options); | |
2090 | if (!argpar_state) { | |
2091 | ERR("Failed to create argpar state."); | |
2092 | goto error; | |
2093 | } | |
2094 | ||
2095 | ARGPAR_ITEM_DESTROY_AND_RESET(argpar_item); | |
2096 | status = argpar_state_parse_next(argpar_state, &argpar_item, &error); | |
2097 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
2098 | ERR("%s", error); | |
2099 | goto error; | |
2100 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
2101 | ERR("%s", error); | |
2102 | goto error; | |
2103 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
2104 | break; | |
2105 | } | |
2106 | ||
2107 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
2108 | ||
2109 | if (argpar_item->type == ARGPAR_ITEM_TYPE_NON_OPT) { | |
2110 | const struct argpar_item_non_opt *item_non_opt = | |
2111 | (const struct argpar_item_non_opt *) | |
2112 | argpar_item; | |
2113 | ||
2114 | ERR("Unexpected argument `%s`.", item_non_opt->arg); | |
2115 | goto error; | |
2116 | } | |
2117 | ||
2118 | item_opt = (const struct argpar_item_opt *) argpar_item; | |
2119 | ||
2120 | ingested_args = argpar_state_get_ingested_orig_args( | |
2121 | argpar_state); | |
2122 | ||
2123 | my_argc -= ingested_args; | |
2124 | my_argv += ingested_args; | |
2125 | ||
2126 | switch (item_opt->descr->id) { | |
2127 | case OPT_HELP: | |
2128 | SHOW_HELP(); | |
2129 | ret = 0; | |
2130 | goto end; | |
2131 | case OPT_LIST_OPTIONS: | |
2132 | list_cmd_options_argpar(stdout, add_trigger_options); | |
2133 | ret = 0; | |
2134 | goto end; | |
2135 | case OPT_CONDITION: | |
2136 | { | |
2137 | if (condition) { | |
2138 | ERR("A --condition was already given."); | |
2139 | goto error; | |
2140 | } | |
2141 | ||
2142 | condition = parse_condition(&my_argc, &my_argv); | |
2143 | if (!condition) { | |
2144 | /* | |
2145 | * An error message was already printed by | |
2146 | * parse_condition. | |
2147 | */ | |
2148 | goto error; | |
2149 | } | |
2150 | ||
2151 | break; | |
2152 | } | |
2153 | case OPT_ACTION: | |
2154 | { | |
2155 | action = parse_action(&my_argc, &my_argv); | |
2156 | if (!action) { | |
2157 | /* | |
2158 | * An error message was already printed by | |
2159 | * parse_condition. | |
2160 | */ | |
2161 | goto error; | |
2162 | } | |
2163 | ||
2164 | ret = lttng_dynamic_pointer_array_add_pointer( | |
2165 | &actions, action); | |
2166 | if (ret) { | |
2167 | ERR("Failed to add pointer to pointer array."); | |
2168 | goto error; | |
2169 | } | |
2170 | ||
2171 | /* Ownership of the action was transferred to the group. */ | |
2172 | action = NULL; | |
2173 | ||
2174 | break; | |
2175 | } | |
2176 | case OPT_ID: | |
2177 | { | |
2178 | if (!assign_string(&id, item_opt->arg, "--id")) { | |
2179 | goto error; | |
2180 | } | |
2181 | ||
2182 | break; | |
2183 | } | |
4624dad0 SM |
2184 | case OPT_USER_ID: |
2185 | { | |
2186 | if (!assign_string(&user_id, item_opt->arg, | |
2187 | "--user-id")) { | |
2188 | goto error; | |
2189 | } | |
2190 | ||
2191 | break; | |
2192 | } | |
2193 | default: | |
2194 | abort(); | |
2195 | } | |
2196 | } | |
2197 | ||
2198 | if (!condition) { | |
2199 | ERR("Missing --condition."); | |
2200 | goto error; | |
2201 | } | |
2202 | ||
2203 | if (lttng_dynamic_pointer_array_get_count(&actions) == 0) { | |
2204 | ERR("Need at least one --action."); | |
2205 | goto error; | |
2206 | } | |
2207 | ||
4624dad0 SM |
2208 | action_group = lttng_action_group_create(); |
2209 | if (!action_group) { | |
2210 | goto error; | |
2211 | } | |
2212 | ||
2213 | for (i = 0; i < lttng_dynamic_pointer_array_get_count(&actions); i++) { | |
2214 | enum lttng_action_status status; | |
2215 | ||
2216 | action = lttng_dynamic_pointer_array_steal_pointer(&actions, i); | |
2217 | ||
2218 | status = lttng_action_group_add_action(action_group, action); | |
2219 | if (status != LTTNG_ACTION_STATUS_OK) { | |
2220 | goto error; | |
2221 | } | |
2222 | ||
2223 | /* | |
2224 | * The `lttng_action_group_add_action()` takes a reference to | |
2225 | * the action. We can destroy ours. | |
2226 | */ | |
2227 | lttng_action_destroy(action); | |
2228 | action = NULL; | |
2229 | } | |
2230 | ||
2231 | trigger = lttng_trigger_create(condition, action_group); | |
2232 | if (!trigger) { | |
2233 | goto error; | |
2234 | } | |
2235 | ||
2236 | if (id) { | |
2237 | enum lttng_trigger_status trigger_status = | |
2238 | lttng_trigger_set_name(trigger, id); | |
2239 | ||
2240 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
2241 | ERR("Failed to set trigger id."); | |
2242 | goto error; | |
2243 | } | |
2244 | } | |
2245 | ||
4624dad0 SM |
2246 | if (user_id) { |
2247 | enum lttng_trigger_status trigger_status; | |
2248 | char *end; | |
2249 | long long uid; | |
2250 | ||
2251 | errno = 0; | |
2252 | uid = strtol(user_id, &end, 10); | |
2253 | if (end == user_id || *end != '\0' || errno != 0) { | |
2254 | ERR("Failed to parse `%s` as a user id.", user_id); | |
2255 | } | |
2256 | ||
2257 | trigger_status = lttng_trigger_set_owner_uid(trigger, uid); | |
2258 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
2259 | ERR("Failed to set trigger's user identity."); | |
2260 | goto error; | |
2261 | } | |
2262 | } | |
2263 | ||
2264 | ret = lttng_register_trigger(trigger); | |
2265 | if (ret) { | |
2266 | ERR("Failed to register trigger: %s.", lttng_strerror(ret)); | |
2267 | goto error; | |
2268 | } | |
2269 | ||
2270 | MSG("Trigger registered successfully."); | |
2271 | ||
2272 | goto end; | |
2273 | ||
2274 | error: | |
2275 | ret = 1; | |
2276 | ||
2277 | end: | |
2278 | argpar_state_destroy(argpar_state); | |
2279 | argpar_item_destroy(argpar_item); | |
2280 | lttng_dynamic_pointer_array_reset(&actions); | |
2281 | lttng_condition_destroy(condition); | |
2282 | lttng_action_destroy(action_group); | |
2283 | lttng_action_destroy(action); | |
2284 | lttng_trigger_destroy(trigger); | |
2285 | free(error); | |
2286 | free(id); | |
4624dad0 SM |
2287 | free(user_id); |
2288 | return ret; | |
2289 | } |