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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 | 45 | |
50ad0862 | 46 | OPT_NAME, |
4624dad0 | 47 | OPT_FILTER, |
50ad0862 SM |
48 | OPT_EXCLUDE_NAMES, |
49 | OPT_EVENT_NAME, | |
4624dad0 SM |
50 | OPT_LOGLEVEL, |
51 | OPT_LOGLEVEL_ONLY, | |
52 | ||
64c34630 | 53 | OPT_DOMAIN, |
24de704e SM |
54 | OPT_TYPE, |
55 | OPT_LOCATION, | |
4624dad0 | 56 | |
4624dad0 SM |
57 | OPT_MAX_SIZE, |
58 | OPT_DATA_URL, | |
59 | OPT_CTRL_URL, | |
60 | OPT_URL, | |
61 | OPT_PATH, | |
20a01d15 SM |
62 | |
63 | OPT_CAPTURE, | |
4624dad0 SM |
64 | }; |
65 | ||
66 | static const struct argpar_opt_descr event_rule_opt_descrs[] = { | |
4624dad0 | 67 | { OPT_FILTER, 'f', "filter", true }, |
50ad0862 SM |
68 | { OPT_NAME, 'n', "name", true }, |
69 | { OPT_EXCLUDE_NAMES, 'x', "exclude-names", true }, | |
4624dad0 SM |
70 | { OPT_LOGLEVEL, '\0', "loglevel", true }, |
71 | { OPT_LOGLEVEL_ONLY, '\0', "loglevel-only", true }, | |
50ad0862 | 72 | { OPT_EVENT_NAME, 'E', "event-name", true }, |
4624dad0 | 73 | |
64c34630 | 74 | { OPT_DOMAIN, 'd', "domain", true }, |
24de704e SM |
75 | { OPT_TYPE, 't', "type", true }, |
76 | { OPT_LOCATION, 'L', "location", true }, | |
4624dad0 | 77 | |
20a01d15 SM |
78 | /* Capture descriptor */ |
79 | { OPT_CAPTURE, '\0', "capture", true }, | |
80 | ||
4624dad0 SM |
81 | ARGPAR_OPT_DESCR_SENTINEL |
82 | }; | |
83 | ||
84 | static | |
64c34630 | 85 | bool assign_domain_type(enum lttng_domain_type *dest, const char *arg) |
4624dad0 SM |
86 | { |
87 | bool ret; | |
88 | ||
64c34630 SM |
89 | if (*dest != LTTNG_DOMAIN_NONE) { |
90 | ERR("More than one `--domain` was specified."); | |
91 | goto error; | |
92 | } | |
93 | ||
94 | if (strcmp(arg, "kernel") == 0) { | |
95 | *dest = LTTNG_DOMAIN_KERNEL; | |
96 | } else if (strcmp(arg, "user") == 0 || strcmp(arg, "userspace") == 0) { | |
97 | *dest = LTTNG_DOMAIN_UST; | |
98 | } else if (strcmp(arg, "jul") == 0) { | |
99 | *dest = LTTNG_DOMAIN_JUL; | |
100 | } else if (strcmp(arg, "log4j") == 0) { | |
101 | *dest = LTTNG_DOMAIN_LOG4J; | |
102 | } else if (strcmp(arg, "python") == 0) { | |
103 | *dest = LTTNG_DOMAIN_PYTHON; | |
4624dad0 | 104 | } else { |
64c34630 SM |
105 | ERR("Invalid `--domain` value: %s", arg); |
106 | goto error; | |
4624dad0 SM |
107 | } |
108 | ||
64c34630 SM |
109 | ret = true; |
110 | goto end; | |
111 | ||
112 | error: | |
113 | ret = false; | |
114 | ||
115 | end: | |
4624dad0 SM |
116 | return ret; |
117 | } | |
118 | ||
119 | static | |
24de704e | 120 | bool assign_event_rule_type(enum lttng_event_rule_type *dest, const char *arg) |
4624dad0 SM |
121 | { |
122 | bool ret; | |
123 | ||
24de704e SM |
124 | if (*dest != LTTNG_EVENT_RULE_TYPE_UNKNOWN) { |
125 | ERR("More than one `--type` was specified."); | |
126 | goto error; | |
127 | } | |
128 | ||
129 | if (strcmp(arg, "tracepoint") == 0 || strcmp(arg, "logging") == 0) { | |
130 | *dest = LTTNG_EVENT_RULE_TYPE_TRACEPOINT; | |
131 | } else if (strcmp (arg, "kprobe") == 0 || strcmp(arg, "kernel-probe") == 0) { | |
132 | *dest = LTTNG_EVENT_RULE_TYPE_KERNEL_PROBE; | |
133 | } else if (strcmp (arg, "uprobe") == 0 || strcmp(arg, "userspace-probe") == 0) { | |
134 | *dest = LTTNG_EVENT_RULE_TYPE_USERSPACE_PROBE; | |
135 | } else if (strcmp (arg, "function") == 0) { | |
136 | *dest = LTTNG_EVENT_RULE_TYPE_KERNEL_FUNCTION; | |
137 | } else if (strcmp (arg, "syscall") == 0) { | |
138 | *dest = LTTNG_EVENT_RULE_TYPE_SYSCALL; | |
4624dad0 | 139 | } else { |
24de704e SM |
140 | ERR("Invalid `--type` value: %s", arg); |
141 | goto error; | |
4624dad0 SM |
142 | } |
143 | ||
24de704e SM |
144 | ret = true; |
145 | goto end; | |
146 | ||
147 | error: | |
148 | ret = false; | |
149 | ||
150 | end: | |
4624dad0 SM |
151 | return ret; |
152 | } | |
153 | ||
154 | static | |
155 | bool assign_string(char **dest, const char *src, const char *opt_name) | |
156 | { | |
157 | bool ret; | |
158 | ||
159 | if (*dest) { | |
160 | ERR("Duplicate '%s' given.", opt_name); | |
161 | goto error; | |
162 | } | |
163 | ||
164 | *dest = strdup(src); | |
165 | if (!*dest) { | |
166 | PERROR("Failed to allocate string '%s'.", opt_name); | |
167 | goto error; | |
168 | } | |
169 | ||
170 | ret = true; | |
171 | goto end; | |
172 | ||
173 | error: | |
174 | ret = false; | |
175 | ||
176 | end: | |
177 | return ret; | |
178 | } | |
179 | ||
180 | /* This is defined in enable_events.c. */ | |
181 | LTTNG_HIDDEN | |
182 | int create_exclusion_list_and_validate(const char *event_name, | |
183 | const char *exclusions_arg, | |
184 | char ***exclusion_list); | |
185 | ||
186 | /* | |
187 | * Parse `str` as a log level in domain `domain_type`. Return -1 if the string | |
188 | * is not recognized as a valid log level. | |
189 | */ | |
190 | static | |
191 | int parse_loglevel_string(const char *str, enum lttng_domain_type domain_type) | |
192 | { | |
193 | switch (domain_type) { | |
194 | case LTTNG_DOMAIN_UST: | |
195 | { | |
196 | enum lttng_loglevel loglevel; | |
197 | const int ret = loglevel_name_to_value(str, &loglevel); | |
198 | ||
199 | return ret == -1 ? ret : (int) loglevel; | |
200 | } | |
201 | case LTTNG_DOMAIN_LOG4J: | |
202 | { | |
203 | enum lttng_loglevel_log4j loglevel; | |
204 | const int ret = loglevel_log4j_name_to_value(str, &loglevel); | |
205 | ||
206 | return ret == -1 ? ret : (int) loglevel; | |
207 | } | |
208 | case LTTNG_DOMAIN_JUL: | |
209 | { | |
210 | enum lttng_loglevel_jul loglevel; | |
211 | const int ret = loglevel_jul_name_to_value(str, &loglevel); | |
212 | ||
213 | return ret == -1 ? ret : (int) loglevel; | |
214 | } | |
215 | case LTTNG_DOMAIN_PYTHON: | |
216 | { | |
217 | enum lttng_loglevel_python loglevel; | |
218 | const int ret = loglevel_python_name_to_value(str, &loglevel); | |
219 | ||
220 | return ret == -1 ? ret : (int) loglevel; | |
221 | } | |
222 | default: | |
223 | /* Invalid domain type. */ | |
224 | abort(); | |
225 | } | |
226 | } | |
227 | ||
228 | static int parse_kernel_probe_opts(const char *source, | |
229 | struct lttng_kernel_probe_location **location) | |
230 | { | |
231 | int ret = 0; | |
232 | int match; | |
233 | char s_hex[19]; | |
234 | char name[LTTNG_SYMBOL_NAME_LEN]; | |
235 | char *symbol_name = NULL; | |
236 | uint64_t offset; | |
237 | ||
238 | /* Check for symbol+offset. */ | |
239 | match = sscanf(source, | |
240 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API | |
241 | "[^'+']+%18s", | |
242 | name, s_hex); | |
243 | if (match == 2) { | |
244 | if (*s_hex == '\0') { | |
245 | ERR("Kernel probe symbol offset is missing."); | |
246 | goto error; | |
247 | } | |
248 | ||
249 | symbol_name = strndup(name, LTTNG_SYMBOL_NAME_LEN); | |
250 | if (!symbol_name) { | |
251 | PERROR("Failed to copy kernel probe location symbol name."); | |
252 | goto error; | |
253 | } | |
254 | offset = strtoul(s_hex, NULL, 0); | |
255 | ||
256 | *location = lttng_kernel_probe_location_symbol_create( | |
257 | symbol_name, offset); | |
f6e30a8a | 258 | if (!*location) { |
4624dad0 SM |
259 | ERR("Failed to create symbol kernel probe location."); |
260 | goto error; | |
261 | } | |
262 | ||
263 | goto end; | |
264 | } | |
265 | ||
266 | /* Check for symbol. */ | |
267 | if (isalpha(name[0]) || name[0] == '_') { | |
268 | match = sscanf(source, | |
269 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API | |
270 | "s", | |
271 | name); | |
272 | if (match == 1) { | |
273 | symbol_name = strndup(name, LTTNG_SYMBOL_NAME_LEN); | |
274 | if (!symbol_name) { | |
275 | ERR("Failed to copy kernel probe location symbol name."); | |
276 | goto error; | |
277 | } | |
278 | ||
279 | *location = lttng_kernel_probe_location_symbol_create( | |
280 | symbol_name, 0); | |
14f27f79 | 281 | if (!*location) { |
4624dad0 SM |
282 | ERR("Failed to create symbol kernel probe location."); |
283 | goto error; | |
284 | } | |
285 | ||
286 | goto end; | |
287 | } | |
288 | } | |
289 | ||
290 | /* Check for address. */ | |
291 | match = sscanf(source, "%18s", s_hex); | |
292 | if (match > 0) { | |
293 | uint64_t address; | |
294 | ||
295 | if (*s_hex == '\0') { | |
296 | ERR("Invalid kernel probe location address."); | |
297 | goto error; | |
298 | } | |
299 | ||
300 | address = strtoul(s_hex, NULL, 0); | |
301 | *location = lttng_kernel_probe_location_address_create(address); | |
5c6ca809 | 302 | if (!*location) { |
4624dad0 SM |
303 | ERR("Failed to create symbol kernel probe location."); |
304 | goto error; | |
305 | } | |
306 | ||
307 | goto end; | |
308 | } | |
309 | ||
310 | error: | |
311 | /* No match */ | |
312 | ret = -1; | |
313 | *location = NULL; | |
314 | ||
315 | end: | |
316 | free(symbol_name); | |
317 | return ret; | |
318 | } | |
319 | ||
20a01d15 SM |
320 | static |
321 | struct lttng_event_expr *ir_op_load_expr_to_event_expr( | |
3363a4c3 JG |
322 | const struct ir_load_expression *load_expr, |
323 | const char *capture_str) | |
20a01d15 SM |
324 | { |
325 | char *provider_name = NULL; | |
326 | struct lttng_event_expr *event_expr = NULL; | |
3363a4c3 JG |
327 | const struct ir_load_expression_op *load_expr_op = load_expr->child; |
328 | const enum ir_load_expression_type load_expr_child_type = | |
329 | load_expr_op->type; | |
20a01d15 | 330 | |
3363a4c3 | 331 | switch (load_expr_child_type) { |
20a01d15 SM |
332 | case IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT: |
333 | case IR_LOAD_EXPRESSION_GET_CONTEXT_ROOT: | |
334 | { | |
335 | const char *field_name; | |
336 | ||
337 | load_expr_op = load_expr_op->next; | |
338 | assert(load_expr_op); | |
339 | assert(load_expr_op->type == IR_LOAD_EXPRESSION_GET_SYMBOL); | |
340 | field_name = load_expr_op->u.symbol; | |
341 | assert(field_name); | |
342 | ||
3363a4c3 | 343 | event_expr = load_expr_child_type == IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT ? |
20a01d15 SM |
344 | lttng_event_expr_event_payload_field_create(field_name) : |
345 | lttng_event_expr_channel_context_field_create(field_name); | |
346 | if (!event_expr) { | |
347 | ERR("Failed to create %s event expression: field name = `%s`.", | |
3363a4c3 | 348 | load_expr_child_type == IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT ? |
20a01d15 SM |
349 | "payload field" : "channel context", |
350 | field_name); | |
351 | goto error; | |
352 | } | |
353 | ||
354 | break; | |
355 | } | |
356 | case IR_LOAD_EXPRESSION_GET_APP_CONTEXT_ROOT: | |
357 | { | |
358 | const char *colon; | |
359 | const char *type_name; | |
360 | const char *field_name; | |
361 | ||
362 | load_expr_op = load_expr_op->next; | |
363 | assert(load_expr_op); | |
364 | assert(load_expr_op->type == IR_LOAD_EXPRESSION_GET_SYMBOL); | |
365 | field_name = load_expr_op->u.symbol; | |
366 | assert(field_name); | |
367 | ||
368 | /* | |
369 | * The field name needs to be of the form PROVIDER:TYPE. We | |
370 | * split it here. | |
371 | */ | |
372 | colon = strchr(field_name, ':'); | |
373 | if (!colon) { | |
374 | ERR("Invalid app-specific context field name: missing colon in `%s`.", | |
375 | field_name); | |
376 | goto error; | |
377 | } | |
378 | ||
379 | type_name = colon + 1; | |
380 | if (*type_name == '\0') { | |
381 | ERR("Invalid app-specific context field name: missing type name after colon in `%s`.", | |
382 | field_name); | |
383 | goto error; | |
384 | } | |
385 | ||
386 | provider_name = strndup(field_name, colon - field_name); | |
387 | if (!provider_name) { | |
388 | PERROR("Failed to allocate field name string"); | |
389 | goto error; | |
390 | } | |
391 | ||
392 | event_expr = lttng_event_expr_app_specific_context_field_create( | |
393 | provider_name, type_name); | |
394 | if (!event_expr) { | |
395 | ERR("Failed to create app-specific context field event expression: provider name = `%s`, type name = `%s`", | |
396 | provider_name, type_name); | |
397 | goto error; | |
398 | } | |
399 | ||
400 | break; | |
401 | } | |
402 | default: | |
403 | ERR("%s: unexpected load expr type %d.", __func__, | |
404 | load_expr_op->type); | |
405 | abort(); | |
406 | } | |
407 | ||
408 | load_expr_op = load_expr_op->next; | |
409 | ||
410 | /* There may be a single array index after that. */ | |
411 | if (load_expr_op->type == IR_LOAD_EXPRESSION_GET_INDEX) { | |
412 | struct lttng_event_expr *index_event_expr; | |
413 | const uint64_t index = load_expr_op->u.index; | |
414 | ||
415 | index_event_expr = lttng_event_expr_array_field_element_create(event_expr, index); | |
416 | if (!index_event_expr) { | |
417 | ERR("Failed to create array field element event expression."); | |
418 | goto error; | |
419 | } | |
420 | ||
421 | event_expr = index_event_expr; | |
422 | load_expr_op = load_expr_op->next; | |
423 | } | |
424 | ||
425 | switch (load_expr_op->type) { | |
426 | case IR_LOAD_EXPRESSION_LOAD_FIELD: | |
427 | /* | |
428 | * This is what we expect, IR_LOAD_EXPRESSION_LOAD_FIELD is | |
429 | * always found at the end of the chain. | |
430 | */ | |
431 | break; | |
432 | case IR_LOAD_EXPRESSION_GET_SYMBOL: | |
433 | ERR("While parsing expression `%s`: Capturing subfields is not supported.", | |
434 | capture_str); | |
435 | goto error; | |
436 | ||
437 | default: | |
438 | ERR("%s: unexpected load expression operator %s.", __func__, | |
439 | ir_load_expression_type_str(load_expr_op->type)); | |
440 | abort(); | |
441 | } | |
442 | ||
443 | goto end; | |
444 | ||
445 | error: | |
446 | lttng_event_expr_destroy(event_expr); | |
447 | event_expr = NULL; | |
448 | ||
449 | end: | |
450 | free(provider_name); | |
451 | ||
452 | return event_expr; | |
453 | } | |
454 | ||
455 | static | |
456 | struct lttng_event_expr *ir_op_load_to_event_expr( | |
457 | const struct ir_op *ir, const char *capture_str) | |
458 | { | |
459 | struct lttng_event_expr *event_expr = NULL; | |
460 | ||
461 | assert(ir->op == IR_OP_LOAD); | |
462 | ||
463 | switch (ir->data_type) { | |
464 | case IR_DATA_EXPRESSION: | |
465 | { | |
466 | const struct ir_load_expression *ir_load_expr = | |
467 | ir->u.load.u.expression; | |
468 | ||
469 | event_expr = ir_op_load_expr_to_event_expr( | |
470 | ir_load_expr, capture_str); | |
471 | break; | |
472 | } | |
473 | default: | |
474 | ERR("%s: unexpected data type: %s.", __func__, | |
475 | ir_data_type_str(ir->data_type)); | |
476 | abort(); | |
477 | } | |
478 | ||
479 | return event_expr; | |
480 | } | |
481 | ||
482 | static | |
483 | const char *ir_operator_type_human_str(enum ir_op_type op) | |
484 | { | |
485 | const char *name; | |
486 | ||
487 | switch (op) { | |
488 | case IR_OP_BINARY: | |
489 | name = "Binary"; | |
490 | break; | |
491 | case IR_OP_UNARY: | |
492 | name = "Unary"; | |
493 | break; | |
494 | case IR_OP_LOGICAL: | |
495 | name = "Logical"; | |
496 | break; | |
497 | default: | |
498 | abort(); | |
499 | } | |
500 | ||
501 | return name; | |
502 | } | |
503 | ||
504 | static | |
505 | struct lttng_event_expr *ir_op_root_to_event_expr(const struct ir_op *ir, | |
506 | const char *capture_str) | |
507 | { | |
508 | struct lttng_event_expr *event_expr = NULL; | |
509 | ||
510 | assert(ir->op == IR_OP_ROOT); | |
511 | ir = ir->u.root.child; | |
512 | ||
513 | switch (ir->op) { | |
514 | case IR_OP_LOAD: | |
515 | event_expr = ir_op_load_to_event_expr(ir, capture_str); | |
516 | break; | |
517 | case IR_OP_BINARY: | |
518 | case IR_OP_UNARY: | |
519 | case IR_OP_LOGICAL: | |
520 | ERR("While parsing expression `%s`: %s operators are not allowed in capture expressions.", | |
521 | capture_str, | |
522 | ir_operator_type_human_str(ir->op)); | |
523 | break; | |
524 | default: | |
525 | ERR("%s: unexpected IR op type: %s.", __func__, | |
526 | ir_op_type_str(ir->op)); | |
527 | abort(); | |
528 | } | |
529 | ||
530 | return event_expr; | |
531 | } | |
532 | ||
533 | static | |
534 | void destroy_event_expr(void *ptr) | |
535 | { | |
536 | lttng_event_expr_destroy(ptr); | |
537 | } | |
538 | ||
539 | struct parse_event_rule_res { | |
540 | /* Owned by this. */ | |
541 | struct lttng_event_rule *er; | |
542 | ||
543 | /* Array of `struct lttng_event_expr *` */ | |
544 | struct lttng_dynamic_pointer_array capture_descriptors; | |
545 | }; | |
546 | ||
547 | static | |
548 | struct parse_event_rule_res parse_event_rule(int *argc, const char ***argv) | |
4624dad0 | 549 | { |
4624dad0 SM |
550 | enum lttng_domain_type domain_type = LTTNG_DOMAIN_NONE; |
551 | enum lttng_event_rule_type event_rule_type = | |
552 | LTTNG_EVENT_RULE_TYPE_UNKNOWN; | |
553 | struct argpar_state *state; | |
554 | struct argpar_item *item = NULL; | |
555 | char *error = NULL; | |
556 | int consumed_args = -1; | |
557 | struct lttng_kernel_probe_location *kernel_probe_location = NULL; | |
558 | struct lttng_userspace_probe_location *userspace_probe_location = NULL; | |
20a01d15 SM |
559 | struct parse_event_rule_res res = { 0 }; |
560 | struct lttng_event_expr *event_expr = NULL; | |
561 | struct filter_parser_ctx *parser_ctx = NULL; | |
85b05318 | 562 | struct lttng_log_level_rule *log_level_rule = NULL; |
4624dad0 | 563 | |
50ad0862 SM |
564 | /* Tracepoint and syscall options. */ |
565 | char *name = NULL; | |
566 | char *exclude_names = NULL; | |
567 | char **exclusion_list = NULL; | |
4624dad0 | 568 | |
24de704e SM |
569 | /* For userspace / kernel probe and function. */ |
570 | char *location = NULL; | |
571 | char *event_name = NULL; | |
4624dad0 SM |
572 | |
573 | /* Filter. */ | |
574 | char *filter = NULL; | |
575 | ||
4624dad0 SM |
576 | /* Log level. */ |
577 | char *loglevel_str = NULL; | |
578 | bool loglevel_only = false; | |
579 | ||
20a01d15 SM |
580 | lttng_dynamic_pointer_array_init(&res.capture_descriptors, |
581 | destroy_event_expr); | |
4624dad0 SM |
582 | state = argpar_state_create(*argc, *argv, event_rule_opt_descrs); |
583 | if (!state) { | |
584 | ERR("Failed to allocate an argpar state."); | |
585 | goto error; | |
586 | } | |
587 | ||
588 | while (true) { | |
589 | enum argpar_state_parse_next_status status; | |
590 | ||
591 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
592 | status = argpar_state_parse_next(state, &item, &error); | |
593 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
594 | ERR("%s", error); | |
595 | goto error; | |
596 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
597 | /* Just stop parsing here. */ | |
598 | break; | |
599 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
600 | break; | |
601 | } | |
602 | ||
603 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
604 | ||
605 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
606 | const struct argpar_item_opt *item_opt = | |
607 | (const struct argpar_item_opt *) item; | |
608 | ||
609 | switch (item_opt->descr->id) { | |
610 | /* Domains. */ | |
64c34630 | 611 | case OPT_DOMAIN: |
24de704e SM |
612 | if (!assign_domain_type(&domain_type, |
613 | item_opt->arg)) { | |
4624dad0 SM |
614 | goto error; |
615 | } | |
616 | ||
617 | break; | |
24de704e | 618 | case OPT_TYPE: |
4624dad0 | 619 | if (!assign_event_rule_type(&event_rule_type, |
24de704e | 620 | item_opt->arg)) { |
4624dad0 SM |
621 | goto error; |
622 | } | |
623 | ||
624 | break; | |
24de704e SM |
625 | case OPT_LOCATION: |
626 | if (!assign_string(&location, | |
627 | item_opt->arg, | |
628 | "--location/-L")) { | |
50ad0862 SM |
629 | goto error; |
630 | } | |
631 | ||
632 | break; | |
633 | case OPT_EVENT_NAME: | |
24de704e | 634 | if (!assign_string(&event_name, |
50ad0862 SM |
635 | item_opt->arg, |
636 | "--event-name/-E")) { | |
637 | goto error; | |
4624dad0 SM |
638 | } |
639 | ||
4624dad0 SM |
640 | break; |
641 | case OPT_FILTER: | |
642 | if (!assign_string(&filter, item_opt->arg, | |
643 | "--filter/-f")) { | |
644 | goto error; | |
645 | } | |
646 | ||
647 | break; | |
50ad0862 SM |
648 | case OPT_NAME: |
649 | if (!assign_string(&name, item_opt->arg, | |
650 | "--name/-n")) { | |
651 | goto error; | |
652 | } | |
653 | ||
654 | break; | |
655 | case OPT_EXCLUDE_NAMES: | |
656 | if (!assign_string(&exclude_names, | |
657 | item_opt->arg, | |
658 | "--exclude-names/-x")) { | |
4624dad0 SM |
659 | goto error; |
660 | } | |
661 | ||
662 | break; | |
663 | case OPT_LOGLEVEL: | |
664 | case OPT_LOGLEVEL_ONLY: | |
665 | if (!assign_string(&loglevel_str, item_opt->arg, | |
666 | "--loglevel/--loglevel-only")) { | |
667 | goto error; | |
668 | } | |
669 | ||
670 | loglevel_only = item_opt->descr->id == | |
671 | OPT_LOGLEVEL_ONLY; | |
672 | break; | |
20a01d15 SM |
673 | case OPT_CAPTURE: |
674 | { | |
675 | int ret; | |
676 | const char *capture_str = item_opt->arg; | |
677 | ||
678 | ret = filter_parser_ctx_create_from_filter_expression( | |
679 | capture_str, &parser_ctx); | |
680 | if (ret) { | |
681 | ERR("Failed to parse capture expression `%s`.", | |
682 | capture_str); | |
683 | goto error; | |
684 | } | |
685 | ||
686 | event_expr = ir_op_root_to_event_expr( | |
687 | parser_ctx->ir_root, | |
688 | capture_str); | |
689 | if (!event_expr) { | |
690 | /* | |
691 | * ir_op_root_to_event_expr has printed | |
692 | * an error message. | |
693 | */ | |
694 | goto error; | |
695 | } | |
696 | ||
697 | ret = lttng_dynamic_pointer_array_add_pointer( | |
698 | &res.capture_descriptors, | |
699 | event_expr); | |
700 | if (ret) { | |
701 | goto error; | |
702 | } | |
703 | ||
704 | /* | |
705 | * The ownership of event expression was | |
706 | * transferred to the dynamic array. | |
707 | */ | |
708 | event_expr = NULL; | |
709 | ||
710 | break; | |
711 | } | |
4624dad0 SM |
712 | default: |
713 | abort(); | |
714 | } | |
715 | } else { | |
716 | const struct argpar_item_non_opt *item_non_opt = | |
717 | (const struct argpar_item_non_opt *) | |
718 | item; | |
719 | ||
50ad0862 SM |
720 | /* Don't accept non-option arguments. */ |
721 | ERR("Unexpected argument '%s'", item_non_opt->arg); | |
722 | goto error; | |
4624dad0 SM |
723 | } |
724 | } | |
725 | ||
726 | if (event_rule_type == LTTNG_EVENT_RULE_TYPE_UNKNOWN) { | |
727 | event_rule_type = LTTNG_EVENT_RULE_TYPE_TRACEPOINT; | |
728 | } | |
729 | ||
730 | /* | |
50ad0862 SM |
731 | * Option --name is applicable to event rules of type tracepoint |
732 | * and syscall. For tracepoint and syscall rules, if --name is | |
733 | * omitted, it is implicitly "*". | |
4624dad0 | 734 | */ |
50ad0862 SM |
735 | switch (event_rule_type) { |
736 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
737 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
738 | if (!name) { | |
739 | name = strdup("*"); | |
4624dad0 | 740 | } |
50ad0862 | 741 | break; |
4624dad0 | 742 | |
50ad0862 SM |
743 | default: |
744 | if (name) { | |
745 | ERR("Can't use --name with %s event rules.", | |
746 | lttng_event_rule_type_str( | |
747 | event_rule_type)); | |
4624dad0 SM |
748 | goto error; |
749 | } | |
750 | ||
50ad0862 SM |
751 | if (exclude_names) { |
752 | ERR("Can't use --exclude-names/-x with %s event rules.", | |
753 | lttng_event_rule_type_str( | |
754 | event_rule_type)); | |
755 | goto error; | |
756 | } | |
4624dad0 SM |
757 | } |
758 | ||
759 | /* | |
24de704e SM |
760 | * Option --location is only applicable to (and mandatory for) event |
761 | * rules of type {k,u}probe and function. | |
762 | * | |
50ad0862 | 763 | * Option --event-name is only applicable to event rules of type probe. |
24de704e | 764 | * If omitted, it defaults to the location. |
4624dad0 | 765 | */ |
50ad0862 SM |
766 | switch (event_rule_type) { |
767 | case LTTNG_EVENT_RULE_TYPE_KERNEL_PROBE: | |
768 | case LTTNG_EVENT_RULE_TYPE_USERSPACE_PROBE: | |
24de704e SM |
769 | case LTTNG_EVENT_RULE_TYPE_KERNEL_FUNCTION: |
770 | if (!location) { | |
771 | ERR("Event rule of type %s requires a --location.", | |
772 | lttng_event_rule_type_str(event_rule_type)); | |
773 | goto error; | |
774 | } | |
775 | ||
776 | if (!event_name) { | |
777 | event_name = strdup(location); | |
50ad0862 | 778 | } |
4624dad0 | 779 | |
50ad0862 SM |
780 | break; |
781 | ||
782 | default: | |
24de704e SM |
783 | if (location) { |
784 | ERR("Can't use --location with %s event rules.", | |
785 | lttng_event_rule_type_str(event_rule_type)); | |
786 | goto error; | |
787 | } | |
788 | ||
789 | if (event_name) { | |
50ad0862 SM |
790 | ERR("Can't use --event-name with %s event rules.", |
791 | lttng_event_rule_type_str( | |
792 | event_rule_type)); | |
793 | goto error; | |
794 | } | |
4624dad0 SM |
795 | } |
796 | ||
797 | /* | |
798 | * Update *argc and *argv so our caller can keep parsing what follows. | |
799 | */ | |
800 | consumed_args = argpar_state_get_ingested_orig_args(state); | |
801 | assert(consumed_args >= 0); | |
802 | *argc -= consumed_args; | |
803 | *argv += consumed_args; | |
804 | ||
805 | /* Need to specify a domain. */ | |
806 | if (domain_type == LTTNG_DOMAIN_NONE) { | |
64c34630 | 807 | ERR("Please specify a domain (--domain=(kernel,user,jul,log4j,python))."); |
4624dad0 SM |
808 | goto error; |
809 | } | |
810 | ||
811 | /* Validate event rule type against domain. */ | |
812 | switch (event_rule_type) { | |
f2791161 | 813 | case LTTNG_EVENT_RULE_TYPE_KERNEL_PROBE: |
f2d09181 | 814 | case LTTNG_EVENT_RULE_TYPE_KERNEL_FUNCTION: |
1f1567a5 | 815 | case LTTNG_EVENT_RULE_TYPE_USERSPACE_PROBE: |
4624dad0 SM |
816 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: |
817 | if (domain_type != LTTNG_DOMAIN_KERNEL) { | |
818 | ERR("Event type not available for user-space tracing."); | |
819 | goto error; | |
820 | } | |
821 | break; | |
822 | ||
823 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
824 | break; | |
825 | ||
826 | default: | |
827 | abort(); | |
828 | } | |
829 | ||
830 | /* | |
831 | * Adding a filter to a probe, function or userspace-probe would be | |
832 | * denied by the kernel tracer as it's not supported at the moment. We | |
833 | * do an early check here to warn the user. | |
834 | */ | |
835 | if (filter && domain_type == LTTNG_DOMAIN_KERNEL) { | |
836 | switch (event_rule_type) { | |
837 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
838 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
839 | break; | |
840 | default: | |
841 | ERR("Filter expressions are not supported for %s event rules.", | |
842 | lttng_event_rule_type_str(event_rule_type)); | |
843 | goto error; | |
844 | } | |
845 | } | |
846 | ||
847 | /* If --exclude/-x was passed, split it into an exclusion list. */ | |
50ad0862 | 848 | if (exclude_names) { |
4624dad0 SM |
849 | if (domain_type != LTTNG_DOMAIN_UST) { |
850 | ERR("Event name exclusions are not yet implemented for %s event rules.", | |
851 | get_domain_str(domain_type)); | |
852 | goto error; | |
853 | } | |
854 | ||
50ad0862 SM |
855 | if (create_exclusion_list_and_validate(name, |
856 | exclude_names, &exclusion_list) != 0) { | |
4624dad0 SM |
857 | ERR("Failed to create exclusion list."); |
858 | goto error; | |
859 | } | |
860 | } | |
861 | ||
862 | if (loglevel_str && event_rule_type != LTTNG_EVENT_RULE_TYPE_TRACEPOINT) { | |
863 | ERR("Log levels are only applicable to tracepoint event rules."); | |
864 | goto error; | |
865 | } | |
866 | ||
867 | /* Finally, create the event rule object. */ | |
868 | switch (event_rule_type) { | |
869 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: | |
870 | { | |
871 | enum lttng_event_rule_status event_rule_status; | |
872 | ||
20a01d15 SM |
873 | res.er = lttng_event_rule_tracepoint_create(domain_type); |
874 | if (!res.er) { | |
4624dad0 SM |
875 | ERR("Failed to create tracepoint event rule."); |
876 | goto error; | |
877 | } | |
878 | ||
879 | /* Set pattern. */ | |
880 | event_rule_status = lttng_event_rule_tracepoint_set_pattern( | |
50ad0862 | 881 | res.er, name); |
4624dad0 SM |
882 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
883 | ERR("Failed to set tracepoint event rule's pattern to '%s'.", | |
50ad0862 | 884 | name); |
4624dad0 SM |
885 | goto error; |
886 | } | |
887 | ||
888 | /* Set filter. */ | |
889 | if (filter) { | |
890 | event_rule_status = lttng_event_rule_tracepoint_set_filter( | |
20a01d15 | 891 | res.er, filter); |
4624dad0 SM |
892 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
893 | ERR("Failed to set tracepoint event rule's filter to '%s'.", | |
894 | filter); | |
895 | goto error; | |
896 | } | |
897 | } | |
898 | ||
899 | /* Set exclusion list. */ | |
900 | if (exclusion_list) { | |
901 | int n; | |
902 | ||
903 | for (n = 0; exclusion_list[n]; n++) { | |
904 | event_rule_status = lttng_event_rule_tracepoint_add_exclusion( | |
20a01d15 | 905 | res.er, |
4624dad0 SM |
906 | exclusion_list[n]); |
907 | if (event_rule_status != | |
908 | LTTNG_EVENT_RULE_STATUS_OK) { | |
909 | ERR("Failed to set tracepoint exclusion list element '%s'", | |
910 | exclusion_list[n]); | |
911 | goto error; | |
912 | } | |
913 | } | |
914 | } | |
915 | ||
916 | if (loglevel_str) { | |
917 | int loglevel; | |
918 | ||
919 | if (domain_type == LTTNG_DOMAIN_KERNEL) { | |
920 | ERR("Log levels are not supported by the kernel tracer."); | |
921 | goto error; | |
922 | } | |
923 | ||
924 | loglevel = parse_loglevel_string( | |
925 | loglevel_str, domain_type); | |
926 | if (loglevel < 0) { | |
927 | ERR("Failed to parse `%s` as a log level.", | |
928 | loglevel_str); | |
929 | goto error; | |
930 | } | |
931 | ||
932 | if (loglevel_only) { | |
85b05318 | 933 | log_level_rule = lttng_log_level_rule_exactly_create(loglevel); |
4624dad0 | 934 | } else { |
85b05318 JR |
935 | log_level_rule = lttng_log_level_rule_at_least_as_severe_as_create(loglevel); |
936 | } | |
937 | ||
938 | if (log_level_rule == NULL) { | |
939 | ERR("Failed to create log level rule object."); | |
940 | goto error; | |
4624dad0 SM |
941 | } |
942 | ||
85b05318 JR |
943 | event_rule_status = |
944 | lttng_event_rule_tracepoint_set_log_level_rule( | |
945 | res.er, log_level_rule); | |
946 | ||
4624dad0 SM |
947 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
948 | ERR("Failed to set log level on event fule."); | |
949 | goto error; | |
950 | } | |
951 | } | |
952 | ||
953 | break; | |
954 | } | |
f2791161 | 955 | case LTTNG_EVENT_RULE_TYPE_KERNEL_PROBE: |
4624dad0 SM |
956 | { |
957 | int ret; | |
958 | enum lttng_event_rule_status event_rule_status; | |
959 | ||
50ad0862 | 960 | ret = parse_kernel_probe_opts( |
24de704e | 961 | location, &kernel_probe_location); |
4624dad0 SM |
962 | if (ret) { |
963 | ERR("Failed to parse kernel probe location."); | |
964 | goto error; | |
965 | } | |
966 | ||
602a6d40 JR |
967 | assert(kernel_probe_location); |
968 | res.er = lttng_event_rule_kernel_probe_create(kernel_probe_location); | |
969 | if (!res.er) { | |
970 | ERR("Failed to create kprobe event rule."); | |
4624dad0 SM |
971 | goto error; |
972 | } | |
973 | ||
50ad0862 SM |
974 | event_rule_status = |
975 | lttng_event_rule_kernel_probe_set_event_name( | |
24de704e | 976 | res.er, event_name); |
4624dad0 | 977 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
50ad0862 | 978 | ERR("Failed to set kprobe event rule's name to '%s'.", |
24de704e | 979 | event_name); |
4624dad0 SM |
980 | goto error; |
981 | } | |
982 | ||
983 | break; | |
984 | } | |
1f1567a5 | 985 | case LTTNG_EVENT_RULE_TYPE_USERSPACE_PROBE: |
4624dad0 SM |
986 | { |
987 | int ret; | |
988 | enum lttng_event_rule_status event_rule_status; | |
989 | ||
990 | ret = parse_userspace_probe_opts( | |
24de704e | 991 | location, &userspace_probe_location); |
4624dad0 SM |
992 | if (ret) { |
993 | ERR("Failed to parse user space probe location."); | |
994 | goto error; | |
995 | } | |
996 | ||
10685de6 | 997 | res.er = lttng_event_rule_userspace_probe_create(userspace_probe_location); |
20a01d15 SM |
998 | if (!res.er) { |
999 | ERR("Failed to create userspace probe event rule."); | |
4624dad0 SM |
1000 | goto error; |
1001 | } | |
1002 | ||
50ad0862 SM |
1003 | event_rule_status = |
1004 | lttng_event_rule_userspace_probe_set_event_name( | |
24de704e | 1005 | res.er, event_name); |
4624dad0 SM |
1006 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1007 | ERR("Failed to set user space probe event rule's name to '%s'.", | |
24de704e | 1008 | event_name); |
4624dad0 SM |
1009 | goto error; |
1010 | } | |
1011 | ||
1012 | break; | |
1013 | } | |
1014 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: | |
1015 | { | |
1016 | enum lttng_event_rule_status event_rule_status; | |
1017 | ||
20a01d15 SM |
1018 | res.er = lttng_event_rule_syscall_create(); |
1019 | if (!res.er) { | |
4624dad0 SM |
1020 | ERR("Failed to create syscall event rule."); |
1021 | goto error; | |
1022 | } | |
1023 | ||
1024 | event_rule_status = lttng_event_rule_syscall_set_pattern( | |
50ad0862 | 1025 | res.er, name); |
4624dad0 SM |
1026 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1027 | ERR("Failed to set syscall event rule's pattern to '%s'.", | |
50ad0862 | 1028 | name); |
4624dad0 SM |
1029 | goto error; |
1030 | } | |
1031 | ||
1032 | if (filter) { | |
1033 | event_rule_status = lttng_event_rule_syscall_set_filter( | |
20a01d15 | 1034 | res.er, filter); |
4624dad0 SM |
1035 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1036 | ERR("Failed to set syscall event rule's filter to '%s'.", | |
1037 | filter); | |
1038 | goto error; | |
1039 | } | |
1040 | } | |
1041 | ||
1042 | break; | |
1043 | } | |
1044 | default: | |
1045 | abort(); | |
1046 | goto error; | |
1047 | } | |
1048 | ||
1049 | goto end; | |
1050 | ||
1051 | error: | |
20a01d15 SM |
1052 | lttng_event_rule_destroy(res.er); |
1053 | res.er = NULL; | |
1054 | lttng_dynamic_pointer_array_reset(&res.capture_descriptors); | |
4624dad0 SM |
1055 | |
1056 | end: | |
20a01d15 SM |
1057 | if (parser_ctx) { |
1058 | filter_parser_ctx_free(parser_ctx); | |
1059 | } | |
1060 | ||
1061 | lttng_event_expr_destroy(event_expr); | |
4624dad0 SM |
1062 | argpar_item_destroy(item); |
1063 | free(error); | |
1064 | argpar_state_destroy(state); | |
1065 | free(filter); | |
50ad0862 SM |
1066 | free(name); |
1067 | free(exclude_names); | |
4624dad0 | 1068 | free(loglevel_str); |
24de704e SM |
1069 | free(location); |
1070 | free(event_name); | |
50ad0862 | 1071 | |
4624dad0 SM |
1072 | strutils_free_null_terminated_array_of_strings(exclusion_list); |
1073 | lttng_kernel_probe_location_destroy(kernel_probe_location); | |
1074 | lttng_userspace_probe_location_destroy(userspace_probe_location); | |
85b05318 | 1075 | lttng_log_level_rule_destroy(log_level_rule); |
20a01d15 | 1076 | return res; |
4624dad0 SM |
1077 | } |
1078 | ||
1079 | static | |
1080 | struct lttng_condition *handle_condition_event(int *argc, const char ***argv) | |
1081 | { | |
20a01d15 | 1082 | struct parse_event_rule_res res; |
4624dad0 | 1083 | struct lttng_condition *c; |
20a01d15 | 1084 | size_t i; |
4624dad0 | 1085 | |
20a01d15 SM |
1086 | res = parse_event_rule(argc, argv); |
1087 | if (!res.er) { | |
4624dad0 | 1088 | c = NULL; |
20a01d15 | 1089 | goto error; |
4624dad0 SM |
1090 | } |
1091 | ||
d602bd6a | 1092 | c = lttng_condition_on_event_create(res.er); |
20a01d15 SM |
1093 | lttng_event_rule_destroy(res.er); |
1094 | res.er = NULL; | |
4624dad0 | 1095 | if (!c) { |
20a01d15 SM |
1096 | goto error; |
1097 | } | |
1098 | ||
1099 | for (i = 0; i < lttng_dynamic_pointer_array_get_count(&res.capture_descriptors); | |
1100 | i++) { | |
1101 | enum lttng_condition_status status; | |
1102 | struct lttng_event_expr **expr = | |
1103 | lttng_dynamic_array_get_element( | |
1104 | &res.capture_descriptors.array, i); | |
1105 | ||
1106 | assert(expr); | |
1107 | assert(*expr); | |
d602bd6a | 1108 | status = lttng_condition_on_event_append_capture_descriptor( |
20a01d15 SM |
1109 | c, *expr); |
1110 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
81d566c9 JR |
1111 | if (status == LTTNG_CONDITION_STATUS_UNSUPPORTED) { |
1112 | ERR("The capture feature is unsupported by the event-rule condition type"); | |
1113 | } | |
1114 | ||
20a01d15 SM |
1115 | goto error; |
1116 | } | |
1117 | ||
1118 | /* Ownership of event expression moved to `c` */ | |
1119 | *expr = NULL; | |
4624dad0 SM |
1120 | } |
1121 | ||
20a01d15 SM |
1122 | goto end; |
1123 | ||
1124 | error: | |
1125 | lttng_condition_destroy(c); | |
1126 | c = NULL; | |
1127 | ||
4624dad0 | 1128 | end: |
20a01d15 SM |
1129 | lttng_dynamic_pointer_array_reset(&res.capture_descriptors); |
1130 | lttng_event_rule_destroy(res.er); | |
4624dad0 SM |
1131 | return c; |
1132 | } | |
1133 | ||
1134 | static | |
1135 | struct lttng_condition *handle_condition_session_consumed_size(int *argc, const char ***argv) | |
1136 | { | |
1137 | struct lttng_condition *cond = NULL; | |
1138 | struct argpar_state *state = NULL; | |
1139 | struct argpar_item *item = NULL; | |
1140 | const char *threshold_arg = NULL; | |
1141 | const char *session_name_arg = NULL; | |
1142 | uint64_t threshold; | |
1143 | char *error = NULL; | |
1144 | enum lttng_condition_status condition_status; | |
1145 | ||
1146 | state = argpar_state_create(*argc, *argv, event_rule_opt_descrs); | |
1147 | if (!state) { | |
1148 | ERR("Failed to allocate an argpar state."); | |
1149 | goto error; | |
1150 | } | |
1151 | ||
1152 | while (true) { | |
1153 | enum argpar_state_parse_next_status status; | |
1154 | ||
1155 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1156 | status = argpar_state_parse_next(state, &item, &error); | |
1157 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1158 | ERR("%s", error); | |
1159 | goto error; | |
1160 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1161 | /* Just stop parsing here. */ | |
1162 | break; | |
1163 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1164 | break; | |
1165 | } | |
1166 | ||
1167 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1168 | ||
1169 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
1170 | const struct argpar_item_opt *item_opt = | |
1171 | (const struct argpar_item_opt *) item; | |
1172 | ||
1173 | switch (item_opt->descr->id) { | |
1174 | default: | |
1175 | abort(); | |
1176 | } | |
1177 | } else { | |
1178 | const struct argpar_item_non_opt *item_non_opt; | |
1179 | ||
1180 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1181 | ||
1182 | item_non_opt = (const struct argpar_item_non_opt *) item; | |
1183 | ||
1184 | switch (item_non_opt->non_opt_index) { | |
1185 | case 0: | |
1186 | session_name_arg = item_non_opt->arg; | |
1187 | break; | |
1188 | case 1: | |
1189 | threshold_arg = item_non_opt->arg; | |
1190 | break; | |
1191 | default: | |
1192 | ERR("Unexpected argument `%s`.", | |
1193 | item_non_opt->arg); | |
1194 | goto error; | |
1195 | } | |
1196 | } | |
1197 | } | |
1198 | ||
1199 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1200 | *argv += argpar_state_get_ingested_orig_args(state); | |
1201 | ||
1202 | if (!session_name_arg) { | |
1203 | ERR("Missing session name argument."); | |
1204 | goto error; | |
1205 | } | |
1206 | ||
1207 | if (!threshold_arg) { | |
1208 | ERR("Missing threshold argument."); | |
1209 | goto error; | |
1210 | } | |
1211 | ||
1212 | if (utils_parse_size_suffix(threshold_arg, &threshold) != 0) { | |
1213 | ERR("Failed to parse `%s` as a size.", threshold_arg); | |
1214 | goto error; | |
1215 | } | |
1216 | ||
1217 | cond = lttng_condition_session_consumed_size_create(); | |
1218 | if (!cond) { | |
1219 | ERR("Failed to allocate a session consumed size condition."); | |
1220 | goto error; | |
1221 | } | |
1222 | ||
1223 | condition_status = lttng_condition_session_consumed_size_set_session_name( | |
1224 | cond, session_name_arg); | |
1225 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
1226 | ERR("Failed to set session consumed size condition's session name to '%s'.", | |
1227 | session_name_arg); | |
1228 | goto error; | |
1229 | } | |
1230 | ||
1231 | condition_status = lttng_condition_session_consumed_size_set_threshold( | |
1232 | cond, threshold); | |
1233 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
1234 | ERR("Failed to set session consumed size condition threshold."); | |
1235 | goto error; | |
1236 | } | |
1237 | ||
1238 | goto end; | |
1239 | ||
1240 | error: | |
1241 | lttng_condition_destroy(cond); | |
1242 | cond = NULL; | |
1243 | ||
1244 | end: | |
1245 | argpar_state_destroy(state); | |
1246 | argpar_item_destroy(item); | |
1247 | free(error); | |
1248 | return cond; | |
1249 | } | |
1250 | ||
1251 | static | |
1252 | struct lttng_condition *handle_condition_buffer_usage_high(int *argc, const char ***argv) | |
1253 | { | |
1254 | ERR("High buffer usage threshold conditions are unsupported for the moment."); | |
1255 | return NULL; | |
1256 | } | |
1257 | ||
1258 | static | |
1259 | struct lttng_condition *handle_condition_buffer_usage_low(int *argc, const char ***argv) | |
1260 | { | |
1261 | ERR("Low buffer usage threshold conditions are unsupported for the moment."); | |
1262 | return NULL; | |
1263 | } | |
1264 | ||
1265 | static | |
1266 | struct lttng_condition *handle_condition_session_rotation_ongoing(int *argc, const char ***argv) | |
1267 | { | |
1268 | ERR("Session rotation ongoing conditions are unsupported for the moment."); | |
1269 | return NULL; | |
1270 | } | |
1271 | ||
1272 | static | |
1273 | struct lttng_condition *handle_condition_session_rotation_completed(int *argc, const char ***argv) | |
1274 | { | |
1275 | ERR("Session rotation completed conditions are unsupported for the moment."); | |
1276 | return NULL; | |
1277 | } | |
1278 | ||
1279 | struct condition_descr { | |
1280 | const char *name; | |
1281 | struct lttng_condition *(*handler) (int *argc, const char ***argv); | |
1282 | }; | |
1283 | ||
1284 | static const | |
1285 | struct condition_descr condition_descrs[] = { | |
665db063 | 1286 | { "event-rule-matches", handle_condition_event }, |
4624dad0 SM |
1287 | { "on-session-consumed-size", handle_condition_session_consumed_size }, |
1288 | { "on-buffer-usage-high", handle_condition_buffer_usage_high }, | |
1289 | { "on-buffer-usage-low", handle_condition_buffer_usage_low }, | |
1290 | { "on-session-rotation-ongoing", handle_condition_session_rotation_ongoing }, | |
1291 | { "on-session-rotation-completed", handle_condition_session_rotation_completed }, | |
1292 | }; | |
1293 | ||
1294 | static | |
29bcf415 SM |
1295 | struct lttng_condition *parse_condition(const char *condition_name, int *argc, |
1296 | const char ***argv) | |
4624dad0 SM |
1297 | { |
1298 | int i; | |
1299 | struct lttng_condition *cond; | |
4624dad0 SM |
1300 | const struct condition_descr *descr = NULL; |
1301 | ||
4624dad0 SM |
1302 | for (i = 0; i < ARRAY_SIZE(condition_descrs); i++) { |
1303 | if (strcmp(condition_name, condition_descrs[i].name) == 0) { | |
1304 | descr = &condition_descrs[i]; | |
1305 | break; | |
1306 | } | |
1307 | } | |
1308 | ||
1309 | if (!descr) { | |
1310 | ERR("Unknown condition name '%s'", condition_name); | |
1311 | goto error; | |
1312 | } | |
1313 | ||
1314 | cond = descr->handler(argc, argv); | |
1315 | if (!cond) { | |
1316 | /* The handler has already printed an error message. */ | |
1317 | goto error; | |
1318 | } | |
1319 | ||
1320 | goto end; | |
1321 | error: | |
1322 | cond = NULL; | |
1323 | end: | |
1324 | return cond; | |
1325 | } | |
bbadb5e0 JR |
1326 | |
1327 | static struct lttng_rate_policy *parse_rate_policy(const char *policy_str) | |
1328 | { | |
1329 | int num_token; | |
1330 | char **tokens = NULL; | |
1331 | struct lttng_rate_policy *policy = NULL; | |
1332 | enum lttng_rate_policy_type policy_type; | |
1333 | unsigned long long value; | |
1334 | char *policy_type_str; | |
1335 | char *policy_value_str; | |
1336 | ||
1337 | assert(policy_str); | |
1338 | ||
1339 | /* | |
1340 | * rate policy fields are separated by ':'. | |
1341 | */ | |
1342 | tokens = strutils_split(policy_str, ':', 1); | |
1343 | num_token = strutils_array_of_strings_len(tokens); | |
1344 | ||
1345 | /* | |
1346 | * Early sanity check that the number of parameter is exactly 2. | |
1347 | * i.e : type:value | |
1348 | */ | |
1349 | if (num_token != 2) { | |
1350 | ERR("Rate policy format is invalid."); | |
1351 | goto end; | |
1352 | } | |
1353 | ||
1354 | policy_type_str = tokens[0]; | |
1355 | policy_value_str = tokens[1]; | |
1356 | ||
1357 | /* Parse the type. */ | |
1358 | if (strcmp(policy_type_str, "once-after") == 0) { | |
1359 | policy_type = LTTNG_RATE_POLICY_TYPE_ONCE_AFTER_N; | |
1360 | } else if (strcmp(policy_type_str, "every") == 0) { | |
1361 | policy_type = LTTNG_RATE_POLICY_TYPE_EVERY_N; | |
1362 | } else { | |
1363 | ERR("Rate policy type `%s` unknown.", policy_type_str); | |
1364 | goto end; | |
1365 | } | |
1366 | ||
1367 | /* Parse the value. */ | |
1368 | if (utils_parse_unsigned_long_long(policy_value_str, &value) != 0) { | |
1369 | ERR("Failed to parse rate policy value `%s` as an integer.", | |
1370 | policy_value_str); | |
1371 | goto end; | |
1372 | } | |
1373 | ||
1374 | if (value == 0) { | |
1375 | ERR("Rate policy value `%s` must be > 0.", policy_value_str); | |
1376 | goto end; | |
1377 | } | |
1378 | ||
1379 | switch (policy_type) { | |
1380 | case LTTNG_RATE_POLICY_TYPE_EVERY_N: | |
1381 | policy = lttng_rate_policy_every_n_create(value); | |
1382 | break; | |
1383 | case LTTNG_RATE_POLICY_TYPE_ONCE_AFTER_N: | |
1384 | policy = lttng_rate_policy_once_after_n_create(value); | |
1385 | break; | |
1386 | default: | |
1387 | abort(); | |
1388 | } | |
1389 | ||
1390 | if (policy == NULL) { | |
1391 | ERR("Failed to create rate policy `%s`.", policy_str); | |
1392 | } | |
1393 | ||
1394 | end: | |
1395 | strutils_free_null_terminated_array_of_strings(tokens); | |
1396 | return policy; | |
1397 | } | |
1398 | ||
e45dd625 | 1399 | static const struct argpar_opt_descr notify_action_opt_descrs[] = { |
bbadb5e0 | 1400 | { OPT_RATE_POLICY, '\0', "rate-policy", true }, |
e45dd625 JR |
1401 | ARGPAR_OPT_DESCR_SENTINEL |
1402 | }; | |
4624dad0 | 1403 | |
4624dad0 SM |
1404 | static |
1405 | struct lttng_action *handle_action_notify(int *argc, const char ***argv) | |
1406 | { | |
e45dd625 JR |
1407 | struct lttng_action *action = NULL; |
1408 | struct argpar_state *state = NULL; | |
1409 | struct argpar_item *item = NULL; | |
1410 | char *error = NULL; | |
7f4d5b07 | 1411 | struct lttng_rate_policy *policy = NULL; |
4624dad0 | 1412 | |
e45dd625 JR |
1413 | state = argpar_state_create(*argc, *argv, notify_action_opt_descrs); |
1414 | if (!state) { | |
1415 | ERR("Failed to allocate an argpar state."); | |
1416 | goto error; | |
1417 | } | |
1418 | ||
1419 | while (true) { | |
1420 | enum argpar_state_parse_next_status status; | |
1421 | ||
1422 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1423 | status = argpar_state_parse_next(state, &item, &error); | |
1424 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1425 | ERR("%s", error); | |
1426 | goto error; | |
1427 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1428 | /* Just stop parsing here. */ | |
1429 | break; | |
1430 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1431 | break; | |
1432 | } | |
1433 | ||
1434 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1435 | ||
1436 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
1437 | const struct argpar_item_opt *item_opt = | |
1438 | (const struct argpar_item_opt *) item; | |
1439 | ||
1440 | switch (item_opt->descr->id) { | |
bbadb5e0 | 1441 | case OPT_RATE_POLICY: |
e45dd625 | 1442 | { |
bbadb5e0 JR |
1443 | policy = parse_rate_policy(item_opt->arg); |
1444 | if (!policy) { | |
e45dd625 JR |
1445 | goto error; |
1446 | } | |
e45dd625 JR |
1447 | break; |
1448 | } | |
e45dd625 JR |
1449 | default: |
1450 | abort(); | |
1451 | } | |
1452 | } else { | |
1453 | const struct argpar_item_non_opt *item_non_opt; | |
1454 | ||
1455 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1456 | ||
1457 | item_non_opt = (const struct argpar_item_non_opt *) item; | |
1458 | ||
1459 | switch (item_non_opt->non_opt_index) { | |
1460 | default: | |
1461 | ERR("Unexpected argument `%s`.", | |
1462 | item_non_opt->arg); | |
1463 | goto error; | |
1464 | } | |
1465 | } | |
1466 | } | |
1467 | ||
1468 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1469 | *argv += argpar_state_get_ingested_orig_args(state); | |
1470 | ||
e45dd625 JR |
1471 | action = lttng_action_notify_create(); |
1472 | if (!action) { | |
1473 | ERR("Failed to create notify action"); | |
1474 | goto error; | |
1475 | } | |
1476 | ||
1477 | if (policy) { | |
1478 | enum lttng_action_status status; | |
7f4d5b07 | 1479 | status = lttng_action_notify_set_rate_policy(action, policy); |
e45dd625 | 1480 | if (status != LTTNG_ACTION_STATUS_OK) { |
7f4d5b07 | 1481 | ERR("Failed to set rate policy"); |
e45dd625 JR |
1482 | goto error; |
1483 | } | |
1484 | } | |
1485 | ||
1486 | goto end; | |
1487 | ||
1488 | error: | |
1489 | lttng_action_destroy(action); | |
1490 | action = NULL; | |
e45dd625 | 1491 | end: |
55c6294d | 1492 | free(error); |
7f4d5b07 | 1493 | lttng_rate_policy_destroy(policy); |
e45dd625 JR |
1494 | argpar_state_destroy(state); |
1495 | argpar_item_destroy(item); | |
1496 | return action; | |
1497 | } | |
4624dad0 SM |
1498 | |
1499 | /* | |
e45dd625 | 1500 | * Generic handler for a kind of action that takes a session name and an |
7f4d5b07 | 1501 | * optional rate policy. |
4624dad0 SM |
1502 | */ |
1503 | ||
e45dd625 JR |
1504 | static struct lttng_action *handle_action_simple_session_with_policy(int *argc, |
1505 | const char ***argv, | |
4624dad0 | 1506 | struct lttng_action *(*create_action_cb)(void), |
e45dd625 JR |
1507 | enum lttng_action_status (*set_session_name_cb)( |
1508 | struct lttng_action *, const char *), | |
7f4d5b07 | 1509 | enum lttng_action_status (*set_rate_policy_cb)( |
e45dd625 | 1510 | struct lttng_action *, |
7f4d5b07 | 1511 | const struct lttng_rate_policy *), |
4624dad0 SM |
1512 | const char *action_name) |
1513 | { | |
1514 | struct lttng_action *action = NULL; | |
1515 | struct argpar_state *state = NULL; | |
1516 | struct argpar_item *item = NULL; | |
1517 | const char *session_name_arg = NULL; | |
1518 | char *error = NULL; | |
1519 | enum lttng_action_status action_status; | |
7f4d5b07 | 1520 | struct lttng_rate_policy *policy = NULL; |
e45dd625 JR |
1521 | |
1522 | assert(set_session_name_cb); | |
7f4d5b07 | 1523 | assert(set_rate_policy_cb); |
e45dd625 | 1524 | |
7f4d5b07 | 1525 | const struct argpar_opt_descr rate_policy_opt_descrs[] = { |
bbadb5e0 | 1526 | { OPT_RATE_POLICY, '\0', "rate-policy", true }, |
e45dd625 JR |
1527 | ARGPAR_OPT_DESCR_SENTINEL |
1528 | }; | |
1529 | ||
7f4d5b07 | 1530 | state = argpar_state_create(*argc, *argv, rate_policy_opt_descrs); |
4624dad0 SM |
1531 | if (!state) { |
1532 | ERR("Failed to allocate an argpar state."); | |
1533 | goto error; | |
1534 | } | |
1535 | ||
1536 | while (true) { | |
1537 | enum argpar_state_parse_next_status status; | |
4624dad0 SM |
1538 | |
1539 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1540 | status = argpar_state_parse_next(state, &item, &error); | |
1541 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1542 | ERR("%s", error); | |
1543 | goto error; | |
e45dd625 JR |
1544 | } else if (status == |
1545 | ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
4624dad0 SM |
1546 | /* Just stop parsing here. */ |
1547 | break; | |
1548 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1549 | break; | |
1550 | } | |
1551 | ||
1552 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
e45dd625 JR |
1553 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { |
1554 | const struct argpar_item_opt *item_opt = | |
1555 | (const struct argpar_item_opt *) item; | |
4624dad0 | 1556 | |
e45dd625 | 1557 | switch (item_opt->descr->id) { |
bbadb5e0 | 1558 | case OPT_RATE_POLICY: |
e45dd625 | 1559 | { |
bbadb5e0 JR |
1560 | policy = parse_rate_policy(item_opt->arg); |
1561 | if (!policy) { | |
e45dd625 JR |
1562 | goto error; |
1563 | } | |
e45dd625 JR |
1564 | break; |
1565 | } | |
e45dd625 JR |
1566 | default: |
1567 | abort(); | |
1568 | } | |
1569 | } else { | |
1570 | const struct argpar_item_non_opt *item_non_opt; | |
1571 | item_non_opt = (const struct argpar_item_non_opt *) item; | |
1572 | ||
1573 | switch (item_non_opt->non_opt_index) { | |
1574 | case 0: | |
1575 | session_name_arg = item_non_opt->arg; | |
1576 | break; | |
1577 | default: | |
1578 | ERR("Unexpected argument `%s`.", | |
1579 | item_non_opt->arg); | |
1580 | goto error; | |
1581 | } | |
4624dad0 SM |
1582 | } |
1583 | } | |
1584 | ||
1585 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1586 | *argv += argpar_state_get_ingested_orig_args(state); | |
1587 | ||
1588 | if (!session_name_arg) { | |
1589 | ERR("Missing session name."); | |
1590 | goto error; | |
1591 | } | |
1592 | ||
1593 | action = create_action_cb(); | |
1594 | if (!action) { | |
1595 | ERR("Failed to allocate %s session action.", action_name); | |
1596 | goto error; | |
1597 | } | |
1598 | ||
1599 | action_status = set_session_name_cb(action, session_name_arg); | |
1600 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1601 | ERR("Failed to set action %s session's session name to '%s'.", | |
1602 | action_name, session_name_arg); | |
1603 | goto error; | |
1604 | } | |
1605 | ||
e45dd625 | 1606 | if (policy) { |
7f4d5b07 | 1607 | action_status = set_rate_policy_cb(action, policy); |
e45dd625 | 1608 | if (action_status != LTTNG_ACTION_STATUS_OK) { |
7f4d5b07 | 1609 | ERR("Failed to set rate policy"); |
e45dd625 JR |
1610 | goto error; |
1611 | } | |
1612 | } | |
1613 | ||
4624dad0 SM |
1614 | goto end; |
1615 | ||
1616 | error: | |
1617 | lttng_action_destroy(action); | |
1618 | action = NULL; | |
97abbc84 | 1619 | argpar_item_destroy(item); |
4624dad0 | 1620 | end: |
7f4d5b07 | 1621 | lttng_rate_policy_destroy(policy); |
cb1b81ea | 1622 | free(error); |
b78ef509 | 1623 | argpar_state_destroy(state); |
4624dad0 SM |
1624 | return action; |
1625 | } | |
1626 | ||
1627 | static | |
1628 | struct lttng_action *handle_action_start_session(int *argc, | |
1629 | const char ***argv) | |
1630 | { | |
e45dd625 JR |
1631 | return handle_action_simple_session_with_policy(argc, argv, |
1632 | lttng_action_start_session_create, | |
1633 | lttng_action_start_session_set_session_name, | |
7f4d5b07 | 1634 | lttng_action_start_session_set_rate_policy, "start"); |
4624dad0 SM |
1635 | } |
1636 | ||
1637 | static | |
1638 | struct lttng_action *handle_action_stop_session(int *argc, | |
1639 | const char ***argv) | |
1640 | { | |
e45dd625 JR |
1641 | return handle_action_simple_session_with_policy(argc, argv, |
1642 | lttng_action_stop_session_create, | |
1643 | lttng_action_stop_session_set_session_name, | |
7f4d5b07 | 1644 | lttng_action_stop_session_set_rate_policy, "stop"); |
4624dad0 SM |
1645 | } |
1646 | ||
1647 | static | |
1648 | struct lttng_action *handle_action_rotate_session(int *argc, | |
1649 | const char ***argv) | |
1650 | { | |
e45dd625 | 1651 | return handle_action_simple_session_with_policy(argc, argv, |
4624dad0 SM |
1652 | lttng_action_rotate_session_create, |
1653 | lttng_action_rotate_session_set_session_name, | |
7f4d5b07 | 1654 | lttng_action_rotate_session_set_rate_policy, |
4624dad0 SM |
1655 | "rotate"); |
1656 | } | |
1657 | ||
1658 | static const struct argpar_opt_descr snapshot_action_opt_descrs[] = { | |
1659 | { OPT_NAME, 'n', "name", true }, | |
1660 | { OPT_MAX_SIZE, 'm', "max-size", true }, | |
1661 | { OPT_CTRL_URL, '\0', "ctrl-url", true }, | |
1662 | { OPT_DATA_URL, '\0', "data-url", true }, | |
1663 | { OPT_URL, '\0', "url", true }, | |
1664 | { OPT_PATH, '\0', "path", true }, | |
bbadb5e0 | 1665 | { OPT_RATE_POLICY, '\0', "rate-policy", true }, |
4624dad0 SM |
1666 | ARGPAR_OPT_DESCR_SENTINEL |
1667 | }; | |
1668 | ||
1669 | static | |
1670 | struct lttng_action *handle_action_snapshot_session(int *argc, | |
1671 | const char ***argv) | |
1672 | { | |
1673 | struct lttng_action *action = NULL; | |
1674 | struct argpar_state *state = NULL; | |
1675 | struct argpar_item *item = NULL; | |
1676 | const char *session_name_arg = NULL; | |
1677 | char *snapshot_name_arg = NULL; | |
1678 | char *ctrl_url_arg = NULL; | |
1679 | char *data_url_arg = NULL; | |
1680 | char *max_size_arg = NULL; | |
1681 | char *url_arg = NULL; | |
1682 | char *path_arg = NULL; | |
1683 | char *error = NULL; | |
1684 | enum lttng_action_status action_status; | |
1685 | struct lttng_snapshot_output *snapshot_output = NULL; | |
7f4d5b07 | 1686 | struct lttng_rate_policy *policy = NULL; |
4624dad0 SM |
1687 | int ret; |
1688 | unsigned int locations_specified = 0; | |
1689 | ||
1690 | state = argpar_state_create(*argc, *argv, snapshot_action_opt_descrs); | |
1691 | if (!state) { | |
1692 | ERR("Failed to allocate an argpar state."); | |
1693 | goto error; | |
1694 | } | |
1695 | ||
1696 | while (true) { | |
1697 | enum argpar_state_parse_next_status status; | |
1698 | ||
1699 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1700 | status = argpar_state_parse_next(state, &item, &error); | |
1701 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1702 | ERR("%s", error); | |
1703 | goto error; | |
1704 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1705 | /* Just stop parsing here. */ | |
1706 | break; | |
1707 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1708 | break; | |
1709 | } | |
1710 | ||
1711 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1712 | ||
1713 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
1714 | const struct argpar_item_opt *item_opt = | |
1715 | (const struct argpar_item_opt *) item; | |
1716 | ||
1717 | switch (item_opt->descr->id) { | |
1718 | case OPT_NAME: | |
1719 | if (!assign_string(&snapshot_name_arg, item_opt->arg, "--name/-n")) { | |
1720 | goto error; | |
1721 | } | |
1722 | ||
1723 | break; | |
1724 | case OPT_MAX_SIZE: | |
1725 | if (!assign_string(&max_size_arg, item_opt->arg, "--max-size/-m")) { | |
1726 | goto error; | |
1727 | } | |
1728 | ||
1729 | break; | |
1730 | case OPT_CTRL_URL: | |
1731 | if (!assign_string(&ctrl_url_arg, item_opt->arg, "--ctrl-url")) { | |
1732 | goto error; | |
1733 | } | |
1734 | ||
1735 | break; | |
1736 | case OPT_DATA_URL: | |
1737 | if (!assign_string(&data_url_arg, item_opt->arg, "--data-url")) { | |
1738 | goto error; | |
1739 | } | |
1740 | ||
1741 | break; | |
1742 | case OPT_URL: | |
1743 | if (!assign_string(&url_arg, item_opt->arg, "--url")) { | |
1744 | goto error; | |
1745 | } | |
1746 | ||
1747 | break; | |
1748 | case OPT_PATH: | |
1749 | if (!assign_string(&path_arg, item_opt->arg, "--path")) { | |
1750 | goto error; | |
1751 | } | |
1752 | ||
1753 | break; | |
bbadb5e0 | 1754 | case OPT_RATE_POLICY: |
e45dd625 | 1755 | { |
bbadb5e0 JR |
1756 | policy = parse_rate_policy(item_opt->arg); |
1757 | if (!policy) { | |
e45dd625 JR |
1758 | goto error; |
1759 | } | |
e45dd625 JR |
1760 | break; |
1761 | } | |
4624dad0 SM |
1762 | default: |
1763 | abort(); | |
1764 | } | |
1765 | } else { | |
1766 | const struct argpar_item_non_opt *item_non_opt; | |
1767 | ||
1768 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1769 | ||
1770 | item_non_opt = (const struct argpar_item_non_opt *) item; | |
1771 | ||
1772 | switch (item_non_opt->non_opt_index) { | |
1773 | case 0: | |
1774 | session_name_arg = item_non_opt->arg; | |
1775 | break; | |
1776 | default: | |
1777 | ERR("Unexpected argument `%s`.", | |
1778 | item_non_opt->arg); | |
1779 | goto error; | |
1780 | } | |
1781 | } | |
1782 | } | |
1783 | ||
1784 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1785 | *argv += argpar_state_get_ingested_orig_args(state); | |
1786 | ||
1787 | if (!session_name_arg) { | |
1788 | ERR("Missing session name."); | |
1789 | goto error; | |
1790 | } | |
1791 | ||
1792 | /* --ctrl-url and --data-url must come in pair. */ | |
1793 | if (ctrl_url_arg && !data_url_arg) { | |
1794 | ERR("--ctrl-url is specified, but --data-url is missing."); | |
1795 | goto error; | |
1796 | } | |
1797 | ||
1798 | if (!ctrl_url_arg && data_url_arg) { | |
1799 | ERR("--data-url is specified, but --ctrl-url is missing."); | |
1800 | goto error; | |
1801 | } | |
1802 | ||
1803 | locations_specified += !!(ctrl_url_arg || data_url_arg); | |
1804 | locations_specified += !!url_arg; | |
1805 | locations_specified += !!path_arg; | |
1806 | ||
1807 | /* --ctrl-url/--data-url, --url and --path are mutually exclusive. */ | |
1808 | if (locations_specified > 1) { | |
1809 | ERR("The --ctrl-url/--data-url, --url, and --path options can't be used together."); | |
1810 | goto error; | |
1811 | } | |
1812 | ||
1813 | /* | |
1814 | * Did the user specify an option that implies using a | |
1815 | * custom/unregistered output? | |
1816 | */ | |
1817 | if (url_arg || ctrl_url_arg || path_arg) { | |
1818 | snapshot_output = lttng_snapshot_output_create(); | |
1819 | if (!snapshot_output) { | |
1820 | ERR("Failed to allocate a snapshot output."); | |
1821 | goto error; | |
1822 | } | |
1823 | } | |
1824 | ||
1825 | action = lttng_action_snapshot_session_create(); | |
1826 | if (!action) { | |
1827 | ERR("Failed to allocate snapshot session action."); | |
1828 | goto error; | |
1829 | } | |
1830 | ||
1831 | action_status = lttng_action_snapshot_session_set_session_name( | |
1832 | action, session_name_arg); | |
1833 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1834 | ERR("Failed to set action snapshot session's session name to '%s'.", | |
1835 | session_name_arg); | |
1836 | goto error; | |
1837 | } | |
1838 | ||
1839 | if (snapshot_name_arg) { | |
1840 | if (!snapshot_output) { | |
1841 | ERR("Can't provide a snapshot output name without a snapshot output destination."); | |
1842 | goto error; | |
1843 | } | |
1844 | ||
1845 | ret = lttng_snapshot_output_set_name( | |
1846 | snapshot_name_arg, snapshot_output); | |
1847 | if (ret != 0) { | |
1848 | ERR("Failed to set name of snapshot output."); | |
1849 | goto error; | |
1850 | } | |
1851 | } | |
1852 | ||
1853 | if (max_size_arg) { | |
1854 | uint64_t max_size; | |
1855 | ||
1856 | if (!snapshot_output) { | |
1857 | ERR("Can't provide a snapshot output max size without a snapshot output destination."); | |
1858 | goto error; | |
1859 | } | |
1860 | ||
1861 | ret = utils_parse_size_suffix(max_size_arg, &max_size); | |
1862 | if (ret != 0) { | |
1863 | ERR("Failed to parse `%s` as a size.", max_size_arg); | |
1864 | goto error; | |
1865 | } | |
1866 | ||
1867 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1868 | if (ret != 0) { | |
1869 | ERR("Failed to set snapshot output's max size to %" PRIu64 " bytes.", | |
1870 | max_size); | |
1871 | goto error; | |
1872 | } | |
1873 | } | |
1874 | ||
1875 | if (url_arg) { | |
1876 | int num_uris; | |
1877 | struct lttng_uri *uris; | |
1878 | ||
1879 | if (!strstr(url_arg, "://")) { | |
1880 | ERR("Failed to parse '%s' as an URL.", url_arg); | |
1881 | goto error; | |
1882 | } | |
1883 | ||
1884 | num_uris = uri_parse_str_urls(url_arg, NULL, &uris); | |
1885 | if (num_uris < 1) { | |
1886 | ERR("Failed to parse '%s' as an URL.", url_arg); | |
1887 | goto error; | |
1888 | } | |
1889 | ||
1890 | if (uris[0].dtype == LTTNG_DST_PATH) { | |
1891 | ret = lttng_snapshot_output_set_local_path( | |
1892 | uris[0].dst.path, snapshot_output); | |
1893 | free(uris); | |
1894 | if (ret != 0) { | |
1895 | ERR("Failed to assign '%s' as a local destination.", | |
1896 | url_arg); | |
1897 | goto error; | |
1898 | } | |
1899 | } else { | |
1900 | ret = lttng_snapshot_output_set_network_url( | |
1901 | url_arg, snapshot_output); | |
1902 | free(uris); | |
1903 | if (ret != 0) { | |
1904 | ERR("Failed to assign '%s' as a network URL.", | |
1905 | url_arg); | |
1906 | goto error; | |
1907 | } | |
1908 | } | |
1909 | } | |
1910 | ||
1911 | if (path_arg) { | |
1912 | ret = lttng_snapshot_output_set_local_path( | |
1913 | path_arg, snapshot_output); | |
1914 | if (ret != 0) { | |
1915 | ERR("Failed to parse '%s' as a local path.", path_arg); | |
1916 | goto error; | |
1917 | } | |
1918 | } | |
1919 | ||
1920 | if (ctrl_url_arg) { | |
1921 | /* | |
1922 | * Two argument form, network output with separate control and | |
1923 | * data URLs. | |
1924 | */ | |
1925 | ret = lttng_snapshot_output_set_network_urls( | |
1926 | ctrl_url_arg, data_url_arg, snapshot_output); | |
1927 | if (ret != 0) { | |
1928 | ERR("Failed to parse `%s` and `%s` as control and data URLs.", | |
1929 | ctrl_url_arg, data_url_arg); | |
1930 | goto error; | |
1931 | } | |
1932 | } | |
1933 | ||
1934 | if (snapshot_output) { | |
1935 | action_status = lttng_action_snapshot_session_set_output( | |
1936 | action, snapshot_output); | |
1937 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1938 | ERR("Failed to set snapshot session action's output."); | |
1939 | goto error; | |
1940 | } | |
1941 | ||
1942 | /* Ownership of `snapshot_output` has been transferred to the action. */ | |
1943 | snapshot_output = NULL; | |
1944 | } | |
1945 | ||
e45dd625 JR |
1946 | if (policy) { |
1947 | enum lttng_action_status status; | |
7f4d5b07 | 1948 | status = lttng_action_snapshot_session_set_rate_policy( |
e45dd625 JR |
1949 | action, policy); |
1950 | if (status != LTTNG_ACTION_STATUS_OK) { | |
7f4d5b07 | 1951 | ERR("Failed to set rate policy"); |
e45dd625 JR |
1952 | goto error; |
1953 | } | |
1954 | } | |
1955 | ||
4624dad0 SM |
1956 | goto end; |
1957 | ||
1958 | error: | |
1959 | lttng_action_destroy(action); | |
1960 | action = NULL; | |
1961 | free(error); | |
1962 | end: | |
1963 | free(snapshot_name_arg); | |
1964 | free(path_arg); | |
1965 | free(url_arg); | |
1966 | free(ctrl_url_arg); | |
1967 | free(data_url_arg); | |
1968 | free(snapshot_output); | |
f6b73530 | 1969 | free(max_size_arg); |
7f4d5b07 | 1970 | lttng_rate_policy_destroy(policy); |
4624dad0 | 1971 | argpar_state_destroy(state); |
97abbc84 | 1972 | argpar_item_destroy(item); |
4624dad0 SM |
1973 | return action; |
1974 | } | |
1975 | ||
1976 | struct action_descr { | |
1977 | const char *name; | |
1978 | struct lttng_action *(*handler) (int *argc, const char ***argv); | |
1979 | }; | |
1980 | ||
1981 | static const | |
1982 | struct action_descr action_descrs[] = { | |
1983 | { "notify", handle_action_notify }, | |
1984 | { "start-session", handle_action_start_session }, | |
1985 | { "stop-session", handle_action_stop_session }, | |
1986 | { "rotate-session", handle_action_rotate_session }, | |
1987 | { "snapshot-session", handle_action_snapshot_session }, | |
1988 | }; | |
1989 | ||
1990 | static | |
29bcf415 | 1991 | struct lttng_action *parse_action(const char *action_name, int *argc, const char ***argv) |
4624dad0 SM |
1992 | { |
1993 | int i; | |
1994 | struct lttng_action *action; | |
4624dad0 SM |
1995 | const struct action_descr *descr = NULL; |
1996 | ||
4624dad0 SM |
1997 | for (i = 0; i < ARRAY_SIZE(action_descrs); i++) { |
1998 | if (strcmp(action_name, action_descrs[i].name) == 0) { | |
1999 | descr = &action_descrs[i]; | |
2000 | break; | |
2001 | } | |
2002 | } | |
2003 | ||
2004 | if (!descr) { | |
2005 | ERR("Unknown action name: %s", action_name); | |
2006 | goto error; | |
2007 | } | |
2008 | ||
2009 | action = descr->handler(argc, argv); | |
2010 | if (!action) { | |
2011 | /* The handler has already printed an error message. */ | |
2012 | goto error; | |
2013 | } | |
2014 | ||
2015 | goto end; | |
2016 | error: | |
2017 | action = NULL; | |
2018 | end: | |
2019 | return action; | |
2020 | } | |
2021 | ||
2022 | static const | |
2023 | struct argpar_opt_descr add_trigger_options[] = { | |
2024 | { OPT_HELP, 'h', "help", false }, | |
2025 | { OPT_LIST_OPTIONS, '\0', "list-options", false }, | |
29bcf415 SM |
2026 | { OPT_CONDITION, '\0', "condition", true }, |
2027 | { OPT_ACTION, '\0', "action", true }, | |
1d4b59f2 | 2028 | { OPT_NAME, '\0', "name", true }, |
4624dad0 SM |
2029 | { OPT_USER_ID, '\0', "user-id", true }, |
2030 | ARGPAR_OPT_DESCR_SENTINEL, | |
2031 | }; | |
2032 | ||
2033 | static | |
2034 | void lttng_actions_destructor(void *p) | |
2035 | { | |
2036 | struct lttng_action *action = p; | |
2037 | ||
2038 | lttng_action_destroy(action); | |
2039 | } | |
2040 | ||
2041 | int cmd_add_trigger(int argc, const char **argv) | |
2042 | { | |
2043 | int ret; | |
2044 | int my_argc = argc - 1; | |
2045 | const char **my_argv = argv + 1; | |
2046 | struct lttng_condition *condition = NULL; | |
2047 | struct lttng_dynamic_pointer_array actions; | |
2048 | struct argpar_state *argpar_state = NULL; | |
2049 | struct argpar_item *argpar_item = NULL; | |
2050 | struct lttng_action *action_group = NULL; | |
2051 | struct lttng_action *action = NULL; | |
2052 | struct lttng_trigger *trigger = NULL; | |
2053 | char *error = NULL; | |
1d4b59f2 | 2054 | char *name = NULL; |
4624dad0 | 2055 | int i; |
4624dad0 SM |
2056 | char *user_id = NULL; |
2057 | ||
2058 | lttng_dynamic_pointer_array_init(&actions, lttng_actions_destructor); | |
2059 | ||
2060 | while (true) { | |
2061 | enum argpar_state_parse_next_status status; | |
2062 | const struct argpar_item_opt *item_opt; | |
2063 | int ingested_args; | |
2064 | ||
2065 | argpar_state_destroy(argpar_state); | |
2066 | argpar_state = argpar_state_create(my_argc, my_argv, | |
2067 | add_trigger_options); | |
2068 | if (!argpar_state) { | |
2069 | ERR("Failed to create argpar state."); | |
2070 | goto error; | |
2071 | } | |
2072 | ||
2073 | ARGPAR_ITEM_DESTROY_AND_RESET(argpar_item); | |
2074 | status = argpar_state_parse_next(argpar_state, &argpar_item, &error); | |
2075 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
2076 | ERR("%s", error); | |
2077 | goto error; | |
2078 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
2079 | ERR("%s", error); | |
2080 | goto error; | |
2081 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
2082 | break; | |
2083 | } | |
2084 | ||
2085 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
2086 | ||
2087 | if (argpar_item->type == ARGPAR_ITEM_TYPE_NON_OPT) { | |
2088 | const struct argpar_item_non_opt *item_non_opt = | |
2089 | (const struct argpar_item_non_opt *) | |
2090 | argpar_item; | |
2091 | ||
2092 | ERR("Unexpected argument `%s`.", item_non_opt->arg); | |
2093 | goto error; | |
2094 | } | |
2095 | ||
2096 | item_opt = (const struct argpar_item_opt *) argpar_item; | |
2097 | ||
2098 | ingested_args = argpar_state_get_ingested_orig_args( | |
2099 | argpar_state); | |
2100 | ||
2101 | my_argc -= ingested_args; | |
2102 | my_argv += ingested_args; | |
2103 | ||
2104 | switch (item_opt->descr->id) { | |
2105 | case OPT_HELP: | |
2106 | SHOW_HELP(); | |
2107 | ret = 0; | |
2108 | goto end; | |
2109 | case OPT_LIST_OPTIONS: | |
2110 | list_cmd_options_argpar(stdout, add_trigger_options); | |
2111 | ret = 0; | |
2112 | goto end; | |
2113 | case OPT_CONDITION: | |
2114 | { | |
2115 | if (condition) { | |
2116 | ERR("A --condition was already given."); | |
2117 | goto error; | |
2118 | } | |
2119 | ||
29bcf415 | 2120 | condition = parse_condition(item_opt->arg, &my_argc, &my_argv); |
4624dad0 SM |
2121 | if (!condition) { |
2122 | /* | |
2123 | * An error message was already printed by | |
2124 | * parse_condition. | |
2125 | */ | |
2126 | goto error; | |
2127 | } | |
2128 | ||
2129 | break; | |
2130 | } | |
2131 | case OPT_ACTION: | |
2132 | { | |
29bcf415 | 2133 | action = parse_action(item_opt->arg, &my_argc, &my_argv); |
4624dad0 SM |
2134 | if (!action) { |
2135 | /* | |
2136 | * An error message was already printed by | |
2137 | * parse_condition. | |
2138 | */ | |
2139 | goto error; | |
2140 | } | |
2141 | ||
2142 | ret = lttng_dynamic_pointer_array_add_pointer( | |
2143 | &actions, action); | |
2144 | if (ret) { | |
2145 | ERR("Failed to add pointer to pointer array."); | |
2146 | goto error; | |
2147 | } | |
2148 | ||
2149 | /* Ownership of the action was transferred to the group. */ | |
2150 | action = NULL; | |
2151 | ||
2152 | break; | |
2153 | } | |
1d4b59f2 | 2154 | case OPT_NAME: |
4624dad0 | 2155 | { |
1d4b59f2 | 2156 | if (!assign_string(&name, item_opt->arg, "--name")) { |
4624dad0 SM |
2157 | goto error; |
2158 | } | |
2159 | ||
2160 | break; | |
2161 | } | |
4624dad0 SM |
2162 | case OPT_USER_ID: |
2163 | { | |
2164 | if (!assign_string(&user_id, item_opt->arg, | |
2165 | "--user-id")) { | |
2166 | goto error; | |
2167 | } | |
2168 | ||
2169 | break; | |
2170 | } | |
2171 | default: | |
2172 | abort(); | |
2173 | } | |
2174 | } | |
2175 | ||
2176 | if (!condition) { | |
2177 | ERR("Missing --condition."); | |
2178 | goto error; | |
2179 | } | |
2180 | ||
2181 | if (lttng_dynamic_pointer_array_get_count(&actions) == 0) { | |
2182 | ERR("Need at least one --action."); | |
2183 | goto error; | |
2184 | } | |
2185 | ||
4624dad0 SM |
2186 | action_group = lttng_action_group_create(); |
2187 | if (!action_group) { | |
2188 | goto error; | |
2189 | } | |
2190 | ||
2191 | for (i = 0; i < lttng_dynamic_pointer_array_get_count(&actions); i++) { | |
2192 | enum lttng_action_status status; | |
2193 | ||
2194 | action = lttng_dynamic_pointer_array_steal_pointer(&actions, i); | |
2195 | ||
2196 | status = lttng_action_group_add_action(action_group, action); | |
2197 | if (status != LTTNG_ACTION_STATUS_OK) { | |
2198 | goto error; | |
2199 | } | |
2200 | ||
2201 | /* | |
2202 | * The `lttng_action_group_add_action()` takes a reference to | |
2203 | * the action. We can destroy ours. | |
2204 | */ | |
2205 | lttng_action_destroy(action); | |
2206 | action = NULL; | |
2207 | } | |
2208 | ||
2209 | trigger = lttng_trigger_create(condition, action_group); | |
2210 | if (!trigger) { | |
2211 | goto error; | |
2212 | } | |
2213 | ||
1d4b59f2 | 2214 | if (name) { |
4624dad0 | 2215 | enum lttng_trigger_status trigger_status = |
1d4b59f2 | 2216 | lttng_trigger_set_name(trigger, name); |
4624dad0 SM |
2217 | |
2218 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
1d4b59f2 | 2219 | ERR("Failed to set trigger name."); |
4624dad0 SM |
2220 | goto error; |
2221 | } | |
2222 | } | |
2223 | ||
4624dad0 SM |
2224 | if (user_id) { |
2225 | enum lttng_trigger_status trigger_status; | |
2226 | char *end; | |
2227 | long long uid; | |
2228 | ||
2229 | errno = 0; | |
2230 | uid = strtol(user_id, &end, 10); | |
2231 | if (end == user_id || *end != '\0' || errno != 0) { | |
2232 | ERR("Failed to parse `%s` as a user id.", user_id); | |
2233 | } | |
2234 | ||
2235 | trigger_status = lttng_trigger_set_owner_uid(trigger, uid); | |
2236 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
2237 | ERR("Failed to set trigger's user identity."); | |
2238 | goto error; | |
2239 | } | |
2240 | } | |
2241 | ||
2242 | ret = lttng_register_trigger(trigger); | |
2243 | if (ret) { | |
2244 | ERR("Failed to register trigger: %s.", lttng_strerror(ret)); | |
2245 | goto error; | |
2246 | } | |
2247 | ||
2248 | MSG("Trigger registered successfully."); | |
2249 | ||
2250 | goto end; | |
2251 | ||
2252 | error: | |
2253 | ret = 1; | |
2254 | ||
2255 | end: | |
2256 | argpar_state_destroy(argpar_state); | |
2257 | argpar_item_destroy(argpar_item); | |
2258 | lttng_dynamic_pointer_array_reset(&actions); | |
2259 | lttng_condition_destroy(condition); | |
2260 | lttng_action_destroy(action_group); | |
2261 | lttng_action_destroy(action); | |
2262 | lttng_trigger_destroy(trigger); | |
2263 | free(error); | |
1d4b59f2 | 2264 | free(name); |
4624dad0 SM |
2265 | free(user_id); |
2266 | return ret; | |
2267 | } |