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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> | |
57739a6b | 10 | #include <string.h> |
4624dad0 SM |
11 | |
12 | #include "../command.h" | |
13 | #include "../loglevel.h" | |
14 | #include "../uprobe.h" | |
15 | ||
16 | #include "common/argpar/argpar.h" | |
17 | #include "common/dynamic-array.h" | |
27692bb8 | 18 | #include "common/mi-lttng.h" |
4624dad0 SM |
19 | #include "common/string-utils/string-utils.h" |
20 | #include "common/utils.h" | |
1ceda6f1 | 21 | #include <lttng/domain-internal.h> |
4624dad0 SM |
22 | /* For lttng_event_rule_type_str(). */ |
23 | #include <lttng/event-rule/event-rule-internal.h> | |
24 | #include <lttng/lttng.h> | |
20a01d15 SM |
25 | #include "common/filter/filter-ast.h" |
26 | #include "common/filter/filter-ir.h" | |
27 | #include "common/dynamic-array.h" | |
4624dad0 SM |
28 | |
29 | #if (LTTNG_SYMBOL_NAME_LEN == 256) | |
30 | #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255" | |
31 | #endif | |
32 | ||
33 | #ifdef LTTNG_EMBED_HELP | |
34 | static const char help_msg[] = | |
35 | #include <lttng-add-trigger.1.h> | |
36 | ; | |
37 | #endif | |
38 | ||
39 | enum { | |
40 | OPT_HELP, | |
41 | OPT_LIST_OPTIONS, | |
42 | ||
43 | OPT_CONDITION, | |
44 | OPT_ACTION, | |
45 | OPT_ID, | |
481c5310 | 46 | OPT_OWNER_UID, |
bbadb5e0 | 47 | OPT_RATE_POLICY, |
4624dad0 | 48 | |
50ad0862 | 49 | OPT_NAME, |
4624dad0 | 50 | OPT_FILTER, |
b03a81fb | 51 | OPT_EXCLUDE_NAME, |
50ad0862 | 52 | OPT_EVENT_NAME, |
949f049b | 53 | OPT_LOG_LEVEL, |
4624dad0 | 54 | |
24de704e SM |
55 | OPT_TYPE, |
56 | OPT_LOCATION, | |
4624dad0 | 57 | |
4624dad0 SM |
58 | OPT_MAX_SIZE, |
59 | OPT_DATA_URL, | |
60 | OPT_CTRL_URL, | |
61 | OPT_URL, | |
62 | OPT_PATH, | |
20a01d15 SM |
63 | |
64 | OPT_CAPTURE, | |
4624dad0 SM |
65 | }; |
66 | ||
67 | static const struct argpar_opt_descr event_rule_opt_descrs[] = { | |
4624dad0 | 68 | { OPT_FILTER, 'f', "filter", true }, |
50ad0862 | 69 | { OPT_NAME, 'n', "name", true }, |
b03a81fb | 70 | { OPT_EXCLUDE_NAME, 'x', "exclude-name", true }, |
949f049b | 71 | { OPT_LOG_LEVEL, 'l', "log-level", true }, |
50ad0862 | 72 | { OPT_EVENT_NAME, 'E', "event-name", true }, |
4624dad0 | 73 | |
24de704e SM |
74 | { OPT_TYPE, 't', "type", true }, |
75 | { OPT_LOCATION, 'L', "location", true }, | |
4624dad0 | 76 | |
20a01d15 SM |
77 | /* Capture descriptor */ |
78 | { OPT_CAPTURE, '\0', "capture", true }, | |
79 | ||
4624dad0 SM |
80 | ARGPAR_OPT_DESCR_SENTINEL |
81 | }; | |
82 | ||
83 | static | |
45ce77e1 | 84 | bool has_syscall_prefix(const char *arg) |
4624dad0 | 85 | { |
45ce77e1 JR |
86 | bool matches = false; |
87 | const char kernel_syscall_type_opt_prefix[] = "kernel:syscall"; | |
88 | const size_t kernel_syscall_type_opt_prefix_len = | |
89 | sizeof(kernel_syscall_type_opt_prefix) - 1; | |
90 | const char syscall_type_opt_prefix[] = "syscall"; | |
91 | const size_t syscall_type_opt_prefix_len = | |
92 | sizeof(syscall_type_opt_prefix) - 1; | |
93 | ||
94 | if (strncmp(arg, syscall_type_opt_prefix, | |
95 | syscall_type_opt_prefix_len) == 0) { | |
96 | matches = true; | |
97 | } else if (strncmp(arg, kernel_syscall_type_opt_prefix, | |
98 | kernel_syscall_type_opt_prefix_len) == 0) { | |
99 | matches = true; | |
4624dad0 | 100 | } else { |
45ce77e1 | 101 | matches = false; |
4624dad0 SM |
102 | } |
103 | ||
45ce77e1 | 104 | return matches; |
4624dad0 SM |
105 | } |
106 | ||
107 | static | |
24de704e | 108 | bool assign_event_rule_type(enum lttng_event_rule_type *dest, const char *arg) |
4624dad0 SM |
109 | { |
110 | bool ret; | |
111 | ||
24de704e SM |
112 | if (*dest != LTTNG_EVENT_RULE_TYPE_UNKNOWN) { |
113 | ERR("More than one `--type` was specified."); | |
114 | goto error; | |
115 | } | |
116 | ||
45ce77e1 JR |
117 | if (strcmp(arg, "user") == 0 || strcmp(arg, "user:tracepoint") == 0) { |
118 | *dest = LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT; | |
119 | } else if (strcmp(arg, "kernel") == 0 || | |
120 | strcmp(arg, "kernel:tracepoint") == 0) { | |
121 | *dest = LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT; | |
122 | } else if (strcmp(arg, "jul") == 0 || strcmp(arg, "jul:logging") == 0) { | |
123 | *dest = LTTNG_EVENT_RULE_TYPE_JUL_LOGGING; | |
124 | } else if (strcmp(arg, "log4j") == 0 || | |
125 | strcmp(arg, "log4j:logging") == 0) { | |
126 | *dest = LTTNG_EVENT_RULE_TYPE_LOG4J_LOGGING; | |
127 | } else if (strcmp(arg, "python") == 0 || | |
128 | strcmp(arg, "python:logging") == 0) { | |
129 | *dest = LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING; | |
57739a6b | 130 | } else if (strcmp(arg, "kprobe") == 0 || |
d84633c4 JR |
131 | strcmp(arg, "kernel:kprobe") == 0) { |
132 | *dest = LTTNG_EVENT_RULE_TYPE_KERNEL_KPROBE; | |
e60e9a9a JR |
133 | } else if (strcmp(arg, "kernel:uprobe") == 0) { |
134 | *dest = LTTNG_EVENT_RULE_TYPE_KERNEL_UPROBE; | |
45ce77e1 | 135 | } else if (has_syscall_prefix(arg)) { |
57739a6b JR |
136 | /* |
137 | * Matches the following: | |
138 | * - syscall | |
139 | * - syscall:entry | |
140 | * - syscall:exit | |
141 | * - syscall:entry+exit | |
142 | * - syscall:* | |
213efb0c JR |
143 | * - kernel:syscall |
144 | * - kernel:syscall:entry | |
145 | * - kernel:syscall:exit | |
146 | * - kernel:syscall:entry+exit | |
147 | * - kernel:syscall:* | |
57739a6b JR |
148 | * |
149 | * Validation for the right side is left to further usage sites. | |
150 | */ | |
213efb0c | 151 | *dest = LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL; |
4624dad0 | 152 | } else { |
24de704e SM |
153 | ERR("Invalid `--type` value: %s", arg); |
154 | goto error; | |
4624dad0 SM |
155 | } |
156 | ||
24de704e SM |
157 | ret = true; |
158 | goto end; | |
159 | ||
160 | error: | |
161 | ret = false; | |
162 | ||
163 | end: | |
4624dad0 SM |
164 | return ret; |
165 | } | |
166 | ||
167 | static | |
168 | bool assign_string(char **dest, const char *src, const char *opt_name) | |
169 | { | |
170 | bool ret; | |
171 | ||
172 | if (*dest) { | |
173 | ERR("Duplicate '%s' given.", opt_name); | |
174 | goto error; | |
175 | } | |
176 | ||
177 | *dest = strdup(src); | |
178 | if (!*dest) { | |
179 | PERROR("Failed to allocate string '%s'.", opt_name); | |
180 | goto error; | |
181 | } | |
182 | ||
183 | ret = true; | |
184 | goto end; | |
185 | ||
186 | error: | |
187 | ret = false; | |
188 | ||
189 | end: | |
190 | return ret; | |
191 | } | |
192 | ||
57739a6b | 193 | static bool parse_syscall_emission_site_from_type(const char *str, |
213efb0c | 194 | enum lttng_event_rule_kernel_syscall_emission_site *type) |
57739a6b JR |
195 | { |
196 | bool ret = false; | |
213efb0c JR |
197 | const char kernel_prefix[] = "kernel:"; |
198 | const size_t kernel_prefix_len = sizeof(kernel_prefix) - 1; | |
199 | ||
200 | /* | |
201 | * If the passed string is of the form "kernel:syscall*", move the | |
202 | * pointer passed "kernel:". | |
203 | */ | |
204 | if (strncmp(str, kernel_prefix, kernel_prefix_len) == 0) { | |
205 | str = &str[kernel_prefix_len]; | |
206 | } | |
207 | ||
57739a6b JR |
208 | if (strcmp(str, "syscall") == 0 || |
209 | strcmp(str, "syscall:entry+exit") == 0) { | |
213efb0c | 210 | *type = LTTNG_EVENT_RULE_KERNEL_SYSCALL_EMISSION_SITE_ENTRY_EXIT; |
57739a6b | 211 | } else if (strcmp(str, "syscall:entry") == 0) { |
213efb0c | 212 | *type = LTTNG_EVENT_RULE_KERNEL_SYSCALL_EMISSION_SITE_ENTRY; |
57739a6b | 213 | } else if (strcmp(str, "syscall:exit") == 0) { |
213efb0c | 214 | *type = LTTNG_EVENT_RULE_KERNEL_SYSCALL_EMISSION_SITE_EXIT; |
57739a6b JR |
215 | } else { |
216 | goto error; | |
217 | } | |
218 | ||
219 | ret = true; | |
220 | ||
221 | error: | |
222 | return ret; | |
223 | } | |
224 | ||
4624dad0 | 225 | /* |
45ce77e1 | 226 | * Parse `str` as a log level against the passed event rule type. |
949f049b SM |
227 | * |
228 | * Return the log level in `*log_level`. Return true in `*log_level_only` if | |
229 | * the string specifies exactly this log level, false if it specifies at least | |
230 | * this log level. | |
231 | * | |
232 | * Return true if the string was successfully parsed as a log level string. | |
4624dad0 | 233 | */ |
949f049b | 234 | static bool parse_log_level_string(const char *str, |
45ce77e1 | 235 | enum lttng_event_rule_type event_rule_type, |
949f049b SM |
236 | int *log_level, |
237 | bool *log_level_only) | |
4624dad0 | 238 | { |
949f049b SM |
239 | bool ret; |
240 | ||
45ce77e1 JR |
241 | switch (event_rule_type) { |
242 | case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT: | |
4624dad0 | 243 | { |
949f049b SM |
244 | enum lttng_loglevel log_level_min, log_level_max; |
245 | if (!loglevel_parse_range_string( | |
246 | str, &log_level_min, &log_level_max)) { | |
247 | goto error; | |
248 | } | |
4624dad0 | 249 | |
949f049b SM |
250 | /* Only support VAL and VAL.. for now. */ |
251 | if (log_level_min != log_level_max && | |
252 | log_level_max != LTTNG_LOGLEVEL_EMERG) { | |
253 | goto error; | |
254 | } | |
255 | ||
256 | *log_level = (int) log_level_min; | |
257 | *log_level_only = log_level_min == log_level_max; | |
258 | break; | |
4624dad0 | 259 | } |
45ce77e1 | 260 | case LTTNG_EVENT_RULE_TYPE_LOG4J_LOGGING: |
4624dad0 | 261 | { |
949f049b SM |
262 | enum lttng_loglevel_log4j log_level_min, log_level_max; |
263 | if (!loglevel_log4j_parse_range_string( | |
264 | str, &log_level_min, &log_level_max)) { | |
265 | goto error; | |
266 | } | |
4624dad0 | 267 | |
949f049b SM |
268 | /* Only support VAL and VAL.. for now. */ |
269 | if (log_level_min != log_level_max && | |
270 | log_level_max != LTTNG_LOGLEVEL_LOG4J_FATAL) { | |
271 | goto error; | |
272 | } | |
273 | ||
274 | *log_level = (int) log_level_min; | |
275 | *log_level_only = log_level_min == log_level_max; | |
276 | break; | |
4624dad0 | 277 | } |
45ce77e1 | 278 | case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING: |
4624dad0 | 279 | { |
949f049b SM |
280 | enum lttng_loglevel_jul log_level_min, log_level_max; |
281 | if (!loglevel_jul_parse_range_string( | |
282 | str, &log_level_min, &log_level_max)) { | |
283 | goto error; | |
284 | } | |
4624dad0 | 285 | |
949f049b SM |
286 | /* Only support VAL and VAL.. for now. */ |
287 | if (log_level_min != log_level_max && | |
288 | log_level_max != LTTNG_LOGLEVEL_JUL_SEVERE) { | |
289 | goto error; | |
290 | } | |
291 | ||
292 | *log_level = (int) log_level_min; | |
293 | *log_level_only = log_level_min == log_level_max; | |
294 | break; | |
4624dad0 | 295 | } |
45ce77e1 | 296 | case LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING: |
4624dad0 | 297 | { |
949f049b SM |
298 | enum lttng_loglevel_python log_level_min, log_level_max; |
299 | if (!loglevel_python_parse_range_string( | |
300 | str, &log_level_min, &log_level_max)) { | |
301 | goto error; | |
302 | } | |
4624dad0 | 303 | |
949f049b SM |
304 | /* Only support VAL and VAL.. for now. */ |
305 | if (log_level_min != log_level_max && | |
306 | log_level_max != | |
307 | LTTNG_LOGLEVEL_PYTHON_CRITICAL) { | |
308 | goto error; | |
309 | } | |
310 | ||
311 | *log_level = (int) log_level_min; | |
312 | *log_level_only = log_level_min == log_level_max; | |
313 | break; | |
4624dad0 SM |
314 | } |
315 | default: | |
316 | /* Invalid domain type. */ | |
317 | abort(); | |
318 | } | |
949f049b SM |
319 | |
320 | ret = true; | |
321 | goto end; | |
322 | ||
323 | error: | |
324 | ret = false; | |
325 | ||
326 | end: | |
327 | return ret; | |
4624dad0 SM |
328 | } |
329 | ||
330 | static int parse_kernel_probe_opts(const char *source, | |
331 | struct lttng_kernel_probe_location **location) | |
332 | { | |
333 | int ret = 0; | |
334 | int match; | |
335 | char s_hex[19]; | |
336 | char name[LTTNG_SYMBOL_NAME_LEN]; | |
337 | char *symbol_name = NULL; | |
338 | uint64_t offset; | |
339 | ||
340 | /* Check for symbol+offset. */ | |
341 | match = sscanf(source, | |
342 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API | |
343 | "[^'+']+%18s", | |
344 | name, s_hex); | |
345 | if (match == 2) { | |
346 | if (*s_hex == '\0') { | |
347 | ERR("Kernel probe symbol offset is missing."); | |
348 | goto error; | |
349 | } | |
350 | ||
351 | symbol_name = strndup(name, LTTNG_SYMBOL_NAME_LEN); | |
352 | if (!symbol_name) { | |
353 | PERROR("Failed to copy kernel probe location symbol name."); | |
354 | goto error; | |
355 | } | |
356 | offset = strtoul(s_hex, NULL, 0); | |
357 | ||
358 | *location = lttng_kernel_probe_location_symbol_create( | |
359 | symbol_name, offset); | |
f6e30a8a | 360 | if (!*location) { |
4624dad0 SM |
361 | ERR("Failed to create symbol kernel probe location."); |
362 | goto error; | |
363 | } | |
364 | ||
365 | goto end; | |
366 | } | |
367 | ||
368 | /* Check for symbol. */ | |
369 | if (isalpha(name[0]) || name[0] == '_') { | |
370 | match = sscanf(source, | |
371 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API | |
372 | "s", | |
373 | name); | |
374 | if (match == 1) { | |
375 | symbol_name = strndup(name, LTTNG_SYMBOL_NAME_LEN); | |
376 | if (!symbol_name) { | |
377 | ERR("Failed to copy kernel probe location symbol name."); | |
378 | goto error; | |
379 | } | |
380 | ||
381 | *location = lttng_kernel_probe_location_symbol_create( | |
382 | symbol_name, 0); | |
14f27f79 | 383 | if (!*location) { |
4624dad0 SM |
384 | ERR("Failed to create symbol kernel probe location."); |
385 | goto error; | |
386 | } | |
387 | ||
388 | goto end; | |
389 | } | |
390 | } | |
391 | ||
392 | /* Check for address. */ | |
393 | match = sscanf(source, "%18s", s_hex); | |
394 | if (match > 0) { | |
395 | uint64_t address; | |
396 | ||
397 | if (*s_hex == '\0') { | |
398 | ERR("Invalid kernel probe location address."); | |
399 | goto error; | |
400 | } | |
401 | ||
402 | address = strtoul(s_hex, NULL, 0); | |
403 | *location = lttng_kernel_probe_location_address_create(address); | |
5c6ca809 | 404 | if (!*location) { |
4624dad0 SM |
405 | ERR("Failed to create symbol kernel probe location."); |
406 | goto error; | |
407 | } | |
408 | ||
409 | goto end; | |
410 | } | |
411 | ||
412 | error: | |
413 | /* No match */ | |
414 | ret = -1; | |
415 | *location = NULL; | |
416 | ||
417 | end: | |
418 | free(symbol_name); | |
419 | return ret; | |
420 | } | |
421 | ||
20a01d15 SM |
422 | static |
423 | struct lttng_event_expr *ir_op_load_expr_to_event_expr( | |
3363a4c3 JG |
424 | const struct ir_load_expression *load_expr, |
425 | const char *capture_str) | |
20a01d15 SM |
426 | { |
427 | char *provider_name = NULL; | |
428 | struct lttng_event_expr *event_expr = NULL; | |
3363a4c3 JG |
429 | const struct ir_load_expression_op *load_expr_op = load_expr->child; |
430 | const enum ir_load_expression_type load_expr_child_type = | |
431 | load_expr_op->type; | |
20a01d15 | 432 | |
3363a4c3 | 433 | switch (load_expr_child_type) { |
20a01d15 SM |
434 | case IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT: |
435 | case IR_LOAD_EXPRESSION_GET_CONTEXT_ROOT: | |
436 | { | |
437 | const char *field_name; | |
438 | ||
439 | load_expr_op = load_expr_op->next; | |
440 | assert(load_expr_op); | |
441 | assert(load_expr_op->type == IR_LOAD_EXPRESSION_GET_SYMBOL); | |
442 | field_name = load_expr_op->u.symbol; | |
443 | assert(field_name); | |
444 | ||
3363a4c3 | 445 | event_expr = load_expr_child_type == IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT ? |
20a01d15 SM |
446 | lttng_event_expr_event_payload_field_create(field_name) : |
447 | lttng_event_expr_channel_context_field_create(field_name); | |
448 | if (!event_expr) { | |
449 | ERR("Failed to create %s event expression: field name = `%s`.", | |
3363a4c3 | 450 | load_expr_child_type == IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT ? |
20a01d15 SM |
451 | "payload field" : "channel context", |
452 | field_name); | |
453 | goto error; | |
454 | } | |
455 | ||
456 | break; | |
457 | } | |
458 | case IR_LOAD_EXPRESSION_GET_APP_CONTEXT_ROOT: | |
459 | { | |
460 | const char *colon; | |
461 | const char *type_name; | |
462 | const char *field_name; | |
463 | ||
464 | load_expr_op = load_expr_op->next; | |
465 | assert(load_expr_op); | |
466 | assert(load_expr_op->type == IR_LOAD_EXPRESSION_GET_SYMBOL); | |
467 | field_name = load_expr_op->u.symbol; | |
468 | assert(field_name); | |
469 | ||
470 | /* | |
471 | * The field name needs to be of the form PROVIDER:TYPE. We | |
472 | * split it here. | |
473 | */ | |
474 | colon = strchr(field_name, ':'); | |
475 | if (!colon) { | |
476 | ERR("Invalid app-specific context field name: missing colon in `%s`.", | |
477 | field_name); | |
478 | goto error; | |
479 | } | |
480 | ||
481 | type_name = colon + 1; | |
482 | if (*type_name == '\0') { | |
483 | ERR("Invalid app-specific context field name: missing type name after colon in `%s`.", | |
484 | field_name); | |
485 | goto error; | |
486 | } | |
487 | ||
488 | provider_name = strndup(field_name, colon - field_name); | |
489 | if (!provider_name) { | |
490 | PERROR("Failed to allocate field name string"); | |
491 | goto error; | |
492 | } | |
493 | ||
494 | event_expr = lttng_event_expr_app_specific_context_field_create( | |
495 | provider_name, type_name); | |
496 | if (!event_expr) { | |
497 | ERR("Failed to create app-specific context field event expression: provider name = `%s`, type name = `%s`", | |
498 | provider_name, type_name); | |
499 | goto error; | |
500 | } | |
501 | ||
502 | break; | |
503 | } | |
504 | default: | |
505 | ERR("%s: unexpected load expr type %d.", __func__, | |
506 | load_expr_op->type); | |
507 | abort(); | |
508 | } | |
509 | ||
510 | load_expr_op = load_expr_op->next; | |
511 | ||
512 | /* There may be a single array index after that. */ | |
513 | if (load_expr_op->type == IR_LOAD_EXPRESSION_GET_INDEX) { | |
514 | struct lttng_event_expr *index_event_expr; | |
515 | const uint64_t index = load_expr_op->u.index; | |
516 | ||
517 | index_event_expr = lttng_event_expr_array_field_element_create(event_expr, index); | |
518 | if (!index_event_expr) { | |
519 | ERR("Failed to create array field element event expression."); | |
520 | goto error; | |
521 | } | |
522 | ||
523 | event_expr = index_event_expr; | |
524 | load_expr_op = load_expr_op->next; | |
525 | } | |
526 | ||
527 | switch (load_expr_op->type) { | |
528 | case IR_LOAD_EXPRESSION_LOAD_FIELD: | |
529 | /* | |
530 | * This is what we expect, IR_LOAD_EXPRESSION_LOAD_FIELD is | |
531 | * always found at the end of the chain. | |
532 | */ | |
533 | break; | |
534 | case IR_LOAD_EXPRESSION_GET_SYMBOL: | |
535 | ERR("While parsing expression `%s`: Capturing subfields is not supported.", | |
536 | capture_str); | |
537 | goto error; | |
538 | ||
539 | default: | |
540 | ERR("%s: unexpected load expression operator %s.", __func__, | |
541 | ir_load_expression_type_str(load_expr_op->type)); | |
542 | abort(); | |
543 | } | |
544 | ||
545 | goto end; | |
546 | ||
547 | error: | |
548 | lttng_event_expr_destroy(event_expr); | |
549 | event_expr = NULL; | |
550 | ||
551 | end: | |
552 | free(provider_name); | |
553 | ||
554 | return event_expr; | |
555 | } | |
556 | ||
557 | static | |
558 | struct lttng_event_expr *ir_op_load_to_event_expr( | |
559 | const struct ir_op *ir, const char *capture_str) | |
560 | { | |
561 | struct lttng_event_expr *event_expr = NULL; | |
562 | ||
563 | assert(ir->op == IR_OP_LOAD); | |
564 | ||
565 | switch (ir->data_type) { | |
566 | case IR_DATA_EXPRESSION: | |
567 | { | |
568 | const struct ir_load_expression *ir_load_expr = | |
569 | ir->u.load.u.expression; | |
570 | ||
571 | event_expr = ir_op_load_expr_to_event_expr( | |
572 | ir_load_expr, capture_str); | |
573 | break; | |
574 | } | |
575 | default: | |
576 | ERR("%s: unexpected data type: %s.", __func__, | |
577 | ir_data_type_str(ir->data_type)); | |
578 | abort(); | |
579 | } | |
580 | ||
581 | return event_expr; | |
582 | } | |
583 | ||
584 | static | |
585 | const char *ir_operator_type_human_str(enum ir_op_type op) | |
586 | { | |
587 | const char *name; | |
588 | ||
589 | switch (op) { | |
590 | case IR_OP_BINARY: | |
591 | name = "Binary"; | |
592 | break; | |
593 | case IR_OP_UNARY: | |
594 | name = "Unary"; | |
595 | break; | |
596 | case IR_OP_LOGICAL: | |
597 | name = "Logical"; | |
598 | break; | |
599 | default: | |
600 | abort(); | |
601 | } | |
602 | ||
603 | return name; | |
604 | } | |
605 | ||
606 | static | |
607 | struct lttng_event_expr *ir_op_root_to_event_expr(const struct ir_op *ir, | |
608 | const char *capture_str) | |
609 | { | |
610 | struct lttng_event_expr *event_expr = NULL; | |
611 | ||
612 | assert(ir->op == IR_OP_ROOT); | |
613 | ir = ir->u.root.child; | |
614 | ||
615 | switch (ir->op) { | |
616 | case IR_OP_LOAD: | |
617 | event_expr = ir_op_load_to_event_expr(ir, capture_str); | |
618 | break; | |
619 | case IR_OP_BINARY: | |
620 | case IR_OP_UNARY: | |
621 | case IR_OP_LOGICAL: | |
622 | ERR("While parsing expression `%s`: %s operators are not allowed in capture expressions.", | |
623 | capture_str, | |
624 | ir_operator_type_human_str(ir->op)); | |
625 | break; | |
626 | default: | |
627 | ERR("%s: unexpected IR op type: %s.", __func__, | |
628 | ir_op_type_str(ir->op)); | |
629 | abort(); | |
630 | } | |
631 | ||
632 | return event_expr; | |
633 | } | |
634 | ||
635 | static | |
636 | void destroy_event_expr(void *ptr) | |
637 | { | |
638 | lttng_event_expr_destroy(ptr); | |
639 | } | |
640 | ||
641 | struct parse_event_rule_res { | |
642 | /* Owned by this. */ | |
643 | struct lttng_event_rule *er; | |
644 | ||
645 | /* Array of `struct lttng_event_expr *` */ | |
646 | struct lttng_dynamic_pointer_array capture_descriptors; | |
647 | }; | |
648 | ||
649 | static | |
650 | struct parse_event_rule_res parse_event_rule(int *argc, const char ***argv) | |
4624dad0 | 651 | { |
4624dad0 SM |
652 | enum lttng_event_rule_type event_rule_type = |
653 | LTTNG_EVENT_RULE_TYPE_UNKNOWN; | |
654 | struct argpar_state *state; | |
655 | struct argpar_item *item = NULL; | |
656 | char *error = NULL; | |
657 | int consumed_args = -1; | |
658 | struct lttng_kernel_probe_location *kernel_probe_location = NULL; | |
659 | struct lttng_userspace_probe_location *userspace_probe_location = NULL; | |
20a01d15 SM |
660 | struct parse_event_rule_res res = { 0 }; |
661 | struct lttng_event_expr *event_expr = NULL; | |
662 | struct filter_parser_ctx *parser_ctx = NULL; | |
85b05318 | 663 | struct lttng_log_level_rule *log_level_rule = NULL; |
4624dad0 | 664 | |
57739a6b JR |
665 | /* Event rule type option */ |
666 | char *event_rule_type_str = NULL; | |
667 | ||
50ad0862 SM |
668 | /* Tracepoint and syscall options. */ |
669 | char *name = NULL; | |
b03a81fb SM |
670 | /* Array of strings. */ |
671 | struct lttng_dynamic_pointer_array exclude_names; | |
4624dad0 | 672 | |
24de704e SM |
673 | /* For userspace / kernel probe and function. */ |
674 | char *location = NULL; | |
675 | char *event_name = NULL; | |
4624dad0 SM |
676 | |
677 | /* Filter. */ | |
678 | char *filter = NULL; | |
679 | ||
4624dad0 | 680 | /* Log level. */ |
949f049b | 681 | char *log_level_str = NULL; |
4624dad0 | 682 | |
20a01d15 SM |
683 | lttng_dynamic_pointer_array_init(&res.capture_descriptors, |
684 | destroy_event_expr); | |
b03a81fb SM |
685 | |
686 | lttng_dynamic_pointer_array_init(&exclude_names, free); | |
687 | ||
4624dad0 SM |
688 | state = argpar_state_create(*argc, *argv, event_rule_opt_descrs); |
689 | if (!state) { | |
690 | ERR("Failed to allocate an argpar state."); | |
691 | goto error; | |
692 | } | |
693 | ||
694 | while (true) { | |
695 | enum argpar_state_parse_next_status status; | |
696 | ||
697 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
698 | status = argpar_state_parse_next(state, &item, &error); | |
699 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
700 | ERR("%s", error); | |
701 | goto error; | |
702 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
703 | /* Just stop parsing here. */ | |
704 | break; | |
705 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
706 | break; | |
707 | } | |
708 | ||
709 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
710 | ||
711 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
712 | const struct argpar_item_opt *item_opt = | |
713 | (const struct argpar_item_opt *) item; | |
714 | ||
715 | switch (item_opt->descr->id) { | |
24de704e | 716 | case OPT_TYPE: |
4624dad0 | 717 | if (!assign_event_rule_type(&event_rule_type, |
24de704e | 718 | item_opt->arg)) { |
4624dad0 SM |
719 | goto error; |
720 | } | |
721 | ||
57739a6b JR |
722 | /* Save the string for later use. */ |
723 | if (!assign_string(&event_rule_type_str, | |
724 | item_opt->arg, | |
725 | "--type/-t")) { | |
726 | goto error; | |
727 | } | |
728 | ||
4624dad0 | 729 | break; |
24de704e SM |
730 | case OPT_LOCATION: |
731 | if (!assign_string(&location, | |
732 | item_opt->arg, | |
733 | "--location/-L")) { | |
50ad0862 SM |
734 | goto error; |
735 | } | |
736 | ||
737 | break; | |
738 | case OPT_EVENT_NAME: | |
24de704e | 739 | if (!assign_string(&event_name, |
50ad0862 SM |
740 | item_opt->arg, |
741 | "--event-name/-E")) { | |
742 | goto error; | |
4624dad0 SM |
743 | } |
744 | ||
4624dad0 SM |
745 | break; |
746 | case OPT_FILTER: | |
747 | if (!assign_string(&filter, item_opt->arg, | |
748 | "--filter/-f")) { | |
749 | goto error; | |
750 | } | |
751 | ||
752 | break; | |
50ad0862 SM |
753 | case OPT_NAME: |
754 | if (!assign_string(&name, item_opt->arg, | |
755 | "--name/-n")) { | |
756 | goto error; | |
757 | } | |
758 | ||
759 | break; | |
b03a81fb SM |
760 | case OPT_EXCLUDE_NAME: |
761 | { | |
762 | int ret; | |
763 | ||
764 | ret = lttng_dynamic_pointer_array_add_pointer( | |
765 | &exclude_names, | |
766 | strdup(item_opt->arg)); | |
767 | if (ret != 0) { | |
768 | ERR("Failed to add pointer to dynamic pointer array."); | |
4624dad0 SM |
769 | goto error; |
770 | } | |
771 | ||
772 | break; | |
b03a81fb | 773 | } |
949f049b SM |
774 | case OPT_LOG_LEVEL: |
775 | if (!assign_string(&log_level_str, | |
776 | item_opt->arg, "--log-level/-l")) { | |
4624dad0 SM |
777 | goto error; |
778 | } | |
779 | ||
4624dad0 | 780 | break; |
20a01d15 SM |
781 | case OPT_CAPTURE: |
782 | { | |
783 | int ret; | |
784 | const char *capture_str = item_opt->arg; | |
785 | ||
786 | ret = filter_parser_ctx_create_from_filter_expression( | |
787 | capture_str, &parser_ctx); | |
788 | if (ret) { | |
789 | ERR("Failed to parse capture expression `%s`.", | |
790 | capture_str); | |
791 | goto error; | |
792 | } | |
793 | ||
794 | event_expr = ir_op_root_to_event_expr( | |
795 | parser_ctx->ir_root, | |
796 | capture_str); | |
797 | if (!event_expr) { | |
798 | /* | |
799 | * ir_op_root_to_event_expr has printed | |
800 | * an error message. | |
801 | */ | |
802 | goto error; | |
803 | } | |
804 | ||
805 | ret = lttng_dynamic_pointer_array_add_pointer( | |
806 | &res.capture_descriptors, | |
807 | event_expr); | |
808 | if (ret) { | |
809 | goto error; | |
810 | } | |
811 | ||
812 | /* | |
813 | * The ownership of event expression was | |
814 | * transferred to the dynamic array. | |
815 | */ | |
816 | event_expr = NULL; | |
817 | ||
818 | break; | |
819 | } | |
4624dad0 SM |
820 | default: |
821 | abort(); | |
822 | } | |
823 | } else { | |
824 | const struct argpar_item_non_opt *item_non_opt = | |
825 | (const struct argpar_item_non_opt *) | |
826 | item; | |
827 | ||
50ad0862 SM |
828 | /* Don't accept non-option arguments. */ |
829 | ERR("Unexpected argument '%s'", item_non_opt->arg); | |
830 | goto error; | |
4624dad0 SM |
831 | } |
832 | } | |
833 | ||
834 | if (event_rule_type == LTTNG_EVENT_RULE_TYPE_UNKNOWN) { | |
5dad5529 JG |
835 | ERR("Event rule requires a --type."); |
836 | goto error; | |
4624dad0 SM |
837 | } |
838 | ||
839 | /* | |
45ce77e1 JR |
840 | * Option --name is applicable to event rules of type kernel, user, jul, |
841 | * log4j,python and syscall. If --name is omitted, it is implicitly | |
842 | * "*". | |
4624dad0 | 843 | */ |
50ad0862 | 844 | switch (event_rule_type) { |
45ce77e1 JR |
845 | case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT: |
846 | case LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT: | |
847 | case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING: | |
848 | case LTTNG_EVENT_RULE_TYPE_LOG4J_LOGGING: | |
849 | case LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING: | |
213efb0c | 850 | case LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL: |
50ad0862 SM |
851 | if (!name) { |
852 | name = strdup("*"); | |
4624dad0 | 853 | } |
50ad0862 | 854 | break; |
4624dad0 | 855 | |
50ad0862 SM |
856 | default: |
857 | if (name) { | |
858 | ERR("Can't use --name with %s event rules.", | |
859 | lttng_event_rule_type_str( | |
860 | event_rule_type)); | |
4624dad0 SM |
861 | goto error; |
862 | } | |
863 | ||
b03a81fb SM |
864 | if (lttng_dynamic_pointer_array_get_count(&exclude_names) > 0) { |
865 | ERR("Can't use --exclude-name/-x with %s event rules.", | |
50ad0862 SM |
866 | lttng_event_rule_type_str( |
867 | event_rule_type)); | |
868 | goto error; | |
869 | } | |
4624dad0 SM |
870 | } |
871 | ||
872 | /* | |
24de704e SM |
873 | * Option --location is only applicable to (and mandatory for) event |
874 | * rules of type {k,u}probe and function. | |
875 | * | |
50ad0862 | 876 | * Option --event-name is only applicable to event rules of type probe. |
24de704e | 877 | * If omitted, it defaults to the location. |
4624dad0 | 878 | */ |
50ad0862 | 879 | switch (event_rule_type) { |
d84633c4 | 880 | case LTTNG_EVENT_RULE_TYPE_KERNEL_KPROBE: |
e60e9a9a | 881 | case LTTNG_EVENT_RULE_TYPE_KERNEL_UPROBE: |
24de704e SM |
882 | if (!location) { |
883 | ERR("Event rule of type %s requires a --location.", | |
884 | lttng_event_rule_type_str(event_rule_type)); | |
885 | goto error; | |
886 | } | |
887 | ||
888 | if (!event_name) { | |
889 | event_name = strdup(location); | |
50ad0862 | 890 | } |
4624dad0 | 891 | |
50ad0862 SM |
892 | break; |
893 | ||
894 | default: | |
24de704e SM |
895 | if (location) { |
896 | ERR("Can't use --location with %s event rules.", | |
897 | lttng_event_rule_type_str(event_rule_type)); | |
898 | goto error; | |
899 | } | |
900 | ||
901 | if (event_name) { | |
50ad0862 SM |
902 | ERR("Can't use --event-name with %s event rules.", |
903 | lttng_event_rule_type_str( | |
904 | event_rule_type)); | |
905 | goto error; | |
906 | } | |
4624dad0 SM |
907 | } |
908 | ||
909 | /* | |
910 | * Update *argc and *argv so our caller can keep parsing what follows. | |
911 | */ | |
912 | consumed_args = argpar_state_get_ingested_orig_args(state); | |
913 | assert(consumed_args >= 0); | |
914 | *argc -= consumed_args; | |
915 | *argv += consumed_args; | |
916 | ||
4624dad0 SM |
917 | /* |
918 | * Adding a filter to a probe, function or userspace-probe would be | |
919 | * denied by the kernel tracer as it's not supported at the moment. We | |
920 | * do an early check here to warn the user. | |
921 | */ | |
45ce77e1 | 922 | if (filter) { |
4624dad0 | 923 | switch (event_rule_type) { |
45ce77e1 JR |
924 | case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT: |
925 | case LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT: | |
926 | case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING: | |
927 | case LTTNG_EVENT_RULE_TYPE_LOG4J_LOGGING: | |
928 | case LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING: | |
213efb0c | 929 | case LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL: |
4624dad0 SM |
930 | break; |
931 | default: | |
932 | ERR("Filter expressions are not supported for %s event rules.", | |
933 | lttng_event_rule_type_str(event_rule_type)); | |
934 | goto error; | |
935 | } | |
936 | } | |
937 | ||
45ce77e1 JR |
938 | /* |
939 | * If --exclude-name/-x was passed, split it into an exclusion list. | |
940 | * Exclusions are only supported by | |
941 | * LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT for now. | |
942 | */ | |
b03a81fb | 943 | if (lttng_dynamic_pointer_array_get_count(&exclude_names) > 0) { |
45ce77e1 | 944 | if (event_rule_type != LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT) { |
4624dad0 | 945 | ERR("Event name exclusions are not yet implemented for %s event rules.", |
45ce77e1 | 946 | lttng_event_rule_type_str(event_rule_type)); |
4624dad0 SM |
947 | goto error; |
948 | } | |
949 | ||
f78de773 | 950 | if (validate_exclusion_list(name, &exclude_names) != 0) { |
b03a81fb SM |
951 | /* |
952 | * Assume validate_exclusion_list already prints an | |
953 | * error message. | |
954 | */ | |
4624dad0 SM |
955 | goto error; |
956 | } | |
957 | } | |
958 | ||
949f049b | 959 | if (log_level_str) { |
45ce77e1 JR |
960 | switch (event_rule_type) { |
961 | case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT: | |
962 | case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING: | |
963 | case LTTNG_EVENT_RULE_TYPE_LOG4J_LOGGING: | |
964 | case LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING: | |
965 | { | |
966 | int log_level; | |
967 | bool log_level_only; | |
949f049b | 968 | |
45ce77e1 JR |
969 | if (strcmp(log_level_str, "..") == 0) { |
970 | /* | |
971 | * ".." is the same as passing no log level | |
972 | * option and correspond to the "ANY" case. | |
973 | */ | |
974 | break; | |
975 | } | |
976 | ||
977 | if (!parse_log_level_string(log_level_str, event_rule_type, | |
978 | &log_level, &log_level_only)) { | |
979 | ERR("Failed to parse log level string `%s`.", | |
980 | log_level_str); | |
981 | goto error; | |
982 | } | |
983 | ||
984 | if (log_level_only) { | |
985 | log_level_rule = lttng_log_level_rule_exactly_create(log_level); | |
986 | } else { | |
987 | log_level_rule = lttng_log_level_rule_at_least_as_severe_as_create(log_level); | |
988 | } | |
989 | ||
990 | if (log_level_rule == NULL) { | |
991 | ERR("Failed to create log level rule object."); | |
992 | goto error; | |
993 | } | |
994 | break; | |
995 | } | |
996 | default: | |
997 | ERR("Log levels are not supported for %s event rules.", | |
998 | lttng_event_rule_type_str(event_rule_type)); | |
949f049b SM |
999 | goto error; |
1000 | } | |
4624dad0 SM |
1001 | } |
1002 | ||
1003 | /* Finally, create the event rule object. */ | |
1004 | switch (event_rule_type) { | |
45ce77e1 | 1005 | case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT: |
4624dad0 SM |
1006 | { |
1007 | enum lttng_event_rule_status event_rule_status; | |
1008 | ||
45ce77e1 | 1009 | res.er = lttng_event_rule_user_tracepoint_create(); |
20a01d15 | 1010 | if (!res.er) { |
45ce77e1 | 1011 | ERR("Failed to create user_tracepoint event rule."); |
4624dad0 SM |
1012 | goto error; |
1013 | } | |
1014 | ||
1015 | /* Set pattern. */ | |
45ce77e1 | 1016 | event_rule_status = lttng_event_rule_user_tracepoint_set_name_pattern( |
50ad0862 | 1017 | res.er, name); |
4624dad0 | 1018 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
45ce77e1 | 1019 | ERR("Failed to set user_tracepoint event rule's pattern to '%s'.", |
50ad0862 | 1020 | name); |
4624dad0 SM |
1021 | goto error; |
1022 | } | |
1023 | ||
1024 | /* Set filter. */ | |
1025 | if (filter) { | |
45ce77e1 | 1026 | event_rule_status = lttng_event_rule_user_tracepoint_set_filter( |
20a01d15 | 1027 | res.er, filter); |
4624dad0 | 1028 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
45ce77e1 | 1029 | ERR("Failed to set user_tracepoint event rule's filter to '%s'.", |
4624dad0 SM |
1030 | filter); |
1031 | goto error; | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | /* Set exclusion list. */ | |
b03a81fb | 1036 | if (lttng_dynamic_pointer_array_get_count(&exclude_names) > 0) { |
4624dad0 | 1037 | int n; |
b03a81fb SM |
1038 | int count = lttng_dynamic_pointer_array_get_count( |
1039 | &exclude_names); | |
1040 | ||
1041 | for (n = 0; n < count; n++) { | |
1042 | const char *exclude_name = | |
1043 | lttng_dynamic_pointer_array_get_pointer( | |
1044 | &exclude_names, | |
1045 | n); | |
1046 | ||
1047 | event_rule_status = | |
45ce77e1 | 1048 | lttng_event_rule_user_tracepoint_add_name_pattern_exclusion( |
b03a81fb SM |
1049 | res.er, |
1050 | exclude_name); | |
4624dad0 SM |
1051 | if (event_rule_status != |
1052 | LTTNG_EVENT_RULE_STATUS_OK) { | |
45ce77e1 | 1053 | ERR("Failed to set user_tracepoint exclusion list element '%s'", |
b03a81fb | 1054 | exclude_name); |
4624dad0 SM |
1055 | goto error; |
1056 | } | |
1057 | } | |
1058 | } | |
1059 | ||
45ce77e1 JR |
1060 | if (log_level_rule) { |
1061 | event_rule_status = | |
1062 | lttng_event_rule_user_tracepoint_set_log_level_rule( | |
1063 | res.er, log_level_rule); | |
949f049b | 1064 | |
45ce77e1 JR |
1065 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1066 | ERR("Failed to set log level on event fule."); | |
4624dad0 SM |
1067 | goto error; |
1068 | } | |
45ce77e1 | 1069 | } |
4624dad0 | 1070 | |
45ce77e1 JR |
1071 | break; |
1072 | } | |
1073 | case LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT: | |
1074 | { | |
1075 | enum lttng_event_rule_status event_rule_status; | |
1076 | ||
1077 | res.er = lttng_event_rule_kernel_tracepoint_create(); | |
1078 | if (!res.er) { | |
1079 | ERR("Failed to create kernel_tracepoint event rule."); | |
1080 | goto error; | |
1081 | } | |
1082 | ||
1083 | /* Set pattern. */ | |
1084 | event_rule_status = lttng_event_rule_kernel_tracepoint_set_name_pattern( | |
1085 | res.er, name); | |
1086 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1087 | ERR("Failed to set kernel_tracepoint event rule's pattern to '%s'.", | |
1088 | name); | |
1089 | goto error; | |
1090 | } | |
1091 | ||
1092 | /* Set filter. */ | |
1093 | if (filter) { | |
1094 | event_rule_status = lttng_event_rule_kernel_tracepoint_set_filter( | |
1095 | res.er, filter); | |
1096 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1097 | ERR("Failed to set kernel_tracepoint event rule's filter to '%s'.", | |
1098 | filter); | |
1099 | goto error; | |
85b05318 | 1100 | } |
45ce77e1 JR |
1101 | } |
1102 | break; | |
1103 | } | |
1104 | case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING: | |
1105 | { | |
1106 | enum lttng_event_rule_status event_rule_status; | |
85b05318 | 1107 | |
45ce77e1 JR |
1108 | res.er = lttng_event_rule_jul_logging_create(); |
1109 | if (!res.er) { | |
1110 | ERR("Failed to create jul_logging event rule."); | |
1111 | goto error; | |
1112 | } | |
1113 | ||
1114 | /* Set pattern. */ | |
1115 | event_rule_status = lttng_event_rule_jul_logging_set_name_pattern( | |
1116 | res.er, name); | |
1117 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1118 | ERR("Failed to set jul_logging event rule's pattern to '%s'.", | |
1119 | name); | |
1120 | goto error; | |
1121 | } | |
1122 | ||
1123 | /* Set filter. */ | |
1124 | if (filter) { | |
1125 | event_rule_status = lttng_event_rule_jul_logging_set_filter( | |
1126 | res.er, filter); | |
1127 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1128 | ERR("Failed to set jul_logging event rule's filter to '%s'.", | |
1129 | filter); | |
85b05318 | 1130 | goto error; |
4624dad0 | 1131 | } |
45ce77e1 | 1132 | } |
4624dad0 | 1133 | |
45ce77e1 | 1134 | if (log_level_rule) { |
85b05318 | 1135 | event_rule_status = |
45ce77e1 | 1136 | lttng_event_rule_jul_logging_set_log_level_rule( |
85b05318 JR |
1137 | res.er, log_level_rule); |
1138 | ||
4624dad0 SM |
1139 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1140 | ERR("Failed to set log level on event fule."); | |
1141 | goto error; | |
1142 | } | |
1143 | } | |
45ce77e1 JR |
1144 | break; |
1145 | } | |
1146 | case LTTNG_EVENT_RULE_TYPE_LOG4J_LOGGING: | |
1147 | { | |
1148 | enum lttng_event_rule_status event_rule_status; | |
4624dad0 | 1149 | |
45ce77e1 JR |
1150 | res.er = lttng_event_rule_log4j_logging_create(); |
1151 | if (!res.er) { | |
1152 | ERR("Failed to create jul_logging event rule."); | |
1153 | goto error; | |
1154 | } | |
1155 | ||
1156 | /* Set pattern. */ | |
1157 | event_rule_status = lttng_event_rule_log4j_logging_set_name_pattern( | |
1158 | res.er, name); | |
1159 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1160 | ERR("Failed to set jul_logging event rule's pattern to '%s'.", | |
1161 | name); | |
1162 | goto error; | |
1163 | } | |
1164 | ||
1165 | /* Set filter. */ | |
1166 | if (filter) { | |
1167 | event_rule_status = lttng_event_rule_log4j_logging_set_filter( | |
1168 | res.er, filter); | |
1169 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1170 | ERR("Failed to set jul_logging event rule's filter to '%s'.", | |
1171 | filter); | |
1172 | goto error; | |
1173 | } | |
1174 | } | |
1175 | ||
1176 | if (log_level_rule) { | |
1177 | event_rule_status = | |
1178 | lttng_event_rule_log4j_logging_set_log_level_rule( | |
1179 | res.er, log_level_rule); | |
1180 | ||
1181 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1182 | ERR("Failed to set log level on event fule."); | |
1183 | goto error; | |
1184 | } | |
1185 | } | |
1186 | break; | |
1187 | } | |
1188 | case LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING: | |
1189 | { | |
1190 | enum lttng_event_rule_status event_rule_status; | |
1191 | ||
1192 | res.er = lttng_event_rule_python_logging_create(); | |
1193 | if (!res.er) { | |
1194 | ERR("Failed to create jul_logging event rule."); | |
1195 | goto error; | |
1196 | } | |
1197 | ||
1198 | /* Set pattern. */ | |
1199 | event_rule_status = lttng_event_rule_python_logging_set_name_pattern( | |
1200 | res.er, name); | |
1201 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1202 | ERR("Failed to set jul_logging event rule's pattern to '%s'.", | |
1203 | name); | |
1204 | goto error; | |
1205 | } | |
1206 | ||
1207 | /* Set filter. */ | |
1208 | if (filter) { | |
1209 | event_rule_status = lttng_event_rule_python_logging_set_filter( | |
1210 | res.er, filter); | |
1211 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1212 | ERR("Failed to set jul_logging event rule's filter to '%s'.", | |
1213 | filter); | |
1214 | goto error; | |
1215 | } | |
1216 | } | |
1217 | ||
1218 | if (log_level_rule) { | |
1219 | event_rule_status = | |
1220 | lttng_event_rule_python_logging_set_log_level_rule( | |
1221 | res.er, log_level_rule); | |
1222 | ||
1223 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1224 | ERR("Failed to set log level on event fule."); | |
1225 | goto error; | |
1226 | } | |
1227 | } | |
4624dad0 SM |
1228 | break; |
1229 | } | |
d84633c4 | 1230 | case LTTNG_EVENT_RULE_TYPE_KERNEL_KPROBE: |
4624dad0 SM |
1231 | { |
1232 | int ret; | |
1233 | enum lttng_event_rule_status event_rule_status; | |
1234 | ||
50ad0862 | 1235 | ret = parse_kernel_probe_opts( |
24de704e | 1236 | location, &kernel_probe_location); |
4624dad0 SM |
1237 | if (ret) { |
1238 | ERR("Failed to parse kernel probe location."); | |
1239 | goto error; | |
1240 | } | |
1241 | ||
602a6d40 | 1242 | assert(kernel_probe_location); |
d84633c4 | 1243 | res.er = lttng_event_rule_kernel_kprobe_create(kernel_probe_location); |
602a6d40 JR |
1244 | if (!res.er) { |
1245 | ERR("Failed to create kprobe event rule."); | |
4624dad0 SM |
1246 | goto error; |
1247 | } | |
1248 | ||
50ad0862 | 1249 | event_rule_status = |
d84633c4 | 1250 | lttng_event_rule_kernel_kprobe_set_event_name( |
24de704e | 1251 | res.er, event_name); |
4624dad0 | 1252 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
50ad0862 | 1253 | ERR("Failed to set kprobe event rule's name to '%s'.", |
24de704e | 1254 | event_name); |
4624dad0 SM |
1255 | goto error; |
1256 | } | |
1257 | ||
1258 | break; | |
1259 | } | |
e60e9a9a | 1260 | case LTTNG_EVENT_RULE_TYPE_KERNEL_UPROBE: |
4624dad0 SM |
1261 | { |
1262 | int ret; | |
1263 | enum lttng_event_rule_status event_rule_status; | |
1264 | ||
1265 | ret = parse_userspace_probe_opts( | |
24de704e | 1266 | location, &userspace_probe_location); |
4624dad0 SM |
1267 | if (ret) { |
1268 | ERR("Failed to parse user space probe location."); | |
1269 | goto error; | |
1270 | } | |
1271 | ||
e60e9a9a | 1272 | res.er = lttng_event_rule_kernel_uprobe_create(userspace_probe_location); |
20a01d15 SM |
1273 | if (!res.er) { |
1274 | ERR("Failed to create userspace probe event rule."); | |
4624dad0 SM |
1275 | goto error; |
1276 | } | |
1277 | ||
50ad0862 | 1278 | event_rule_status = |
e60e9a9a | 1279 | lttng_event_rule_kernel_uprobe_set_event_name( |
24de704e | 1280 | res.er, event_name); |
4624dad0 SM |
1281 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1282 | ERR("Failed to set user space probe event rule's name to '%s'.", | |
24de704e | 1283 | event_name); |
4624dad0 SM |
1284 | goto error; |
1285 | } | |
1286 | ||
1287 | break; | |
1288 | } | |
213efb0c | 1289 | case LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL: |
4624dad0 SM |
1290 | { |
1291 | enum lttng_event_rule_status event_rule_status; | |
213efb0c | 1292 | enum lttng_event_rule_kernel_syscall_emission_site emission_site; |
57739a6b JR |
1293 | |
1294 | if (!parse_syscall_emission_site_from_type( | |
bc16a30d | 1295 | event_rule_type_str, &emission_site)) { |
57739a6b JR |
1296 | ERR("Failed to parse syscall type '%s'.", event_rule_type_str); |
1297 | goto error; | |
1298 | } | |
4624dad0 | 1299 | |
213efb0c | 1300 | res.er = lttng_event_rule_kernel_syscall_create(emission_site); |
20a01d15 | 1301 | if (!res.er) { |
4624dad0 SM |
1302 | ERR("Failed to create syscall event rule."); |
1303 | goto error; | |
1304 | } | |
1305 | ||
213efb0c | 1306 | event_rule_status = lttng_event_rule_kernel_syscall_set_name_pattern( |
50ad0862 | 1307 | res.er, name); |
4624dad0 SM |
1308 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1309 | ERR("Failed to set syscall event rule's pattern to '%s'.", | |
50ad0862 | 1310 | name); |
4624dad0 SM |
1311 | goto error; |
1312 | } | |
1313 | ||
1314 | if (filter) { | |
213efb0c | 1315 | event_rule_status = lttng_event_rule_kernel_syscall_set_filter( |
20a01d15 | 1316 | res.er, filter); |
4624dad0 SM |
1317 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1318 | ERR("Failed to set syscall event rule's filter to '%s'.", | |
1319 | filter); | |
1320 | goto error; | |
1321 | } | |
1322 | } | |
1323 | ||
1324 | break; | |
1325 | } | |
1326 | default: | |
1327 | abort(); | |
1328 | goto error; | |
1329 | } | |
1330 | ||
1331 | goto end; | |
1332 | ||
1333 | error: | |
20a01d15 SM |
1334 | lttng_event_rule_destroy(res.er); |
1335 | res.er = NULL; | |
1336 | lttng_dynamic_pointer_array_reset(&res.capture_descriptors); | |
4624dad0 SM |
1337 | |
1338 | end: | |
20a01d15 SM |
1339 | if (parser_ctx) { |
1340 | filter_parser_ctx_free(parser_ctx); | |
1341 | } | |
1342 | ||
1343 | lttng_event_expr_destroy(event_expr); | |
4624dad0 SM |
1344 | argpar_item_destroy(item); |
1345 | free(error); | |
1346 | argpar_state_destroy(state); | |
1347 | free(filter); | |
50ad0862 | 1348 | free(name); |
b03a81fb | 1349 | lttng_dynamic_pointer_array_reset(&exclude_names); |
949f049b | 1350 | free(log_level_str); |
24de704e SM |
1351 | free(location); |
1352 | free(event_name); | |
57739a6b | 1353 | free(event_rule_type_str); |
50ad0862 | 1354 | |
4624dad0 SM |
1355 | lttng_kernel_probe_location_destroy(kernel_probe_location); |
1356 | lttng_userspace_probe_location_destroy(userspace_probe_location); | |
85b05318 | 1357 | lttng_log_level_rule_destroy(log_level_rule); |
20a01d15 | 1358 | return res; |
4624dad0 SM |
1359 | } |
1360 | ||
1361 | static | |
1362 | struct lttng_condition *handle_condition_event(int *argc, const char ***argv) | |
1363 | { | |
20a01d15 | 1364 | struct parse_event_rule_res res; |
4624dad0 | 1365 | struct lttng_condition *c; |
20a01d15 | 1366 | size_t i; |
4624dad0 | 1367 | |
20a01d15 SM |
1368 | res = parse_event_rule(argc, argv); |
1369 | if (!res.er) { | |
4624dad0 | 1370 | c = NULL; |
20a01d15 | 1371 | goto error; |
4624dad0 SM |
1372 | } |
1373 | ||
8dbb86b8 | 1374 | c = lttng_condition_event_rule_matches_create(res.er); |
20a01d15 SM |
1375 | lttng_event_rule_destroy(res.er); |
1376 | res.er = NULL; | |
4624dad0 | 1377 | if (!c) { |
20a01d15 SM |
1378 | goto error; |
1379 | } | |
1380 | ||
1381 | for (i = 0; i < lttng_dynamic_pointer_array_get_count(&res.capture_descriptors); | |
1382 | i++) { | |
1383 | enum lttng_condition_status status; | |
1384 | struct lttng_event_expr **expr = | |
1385 | lttng_dynamic_array_get_element( | |
1386 | &res.capture_descriptors.array, i); | |
1387 | ||
1388 | assert(expr); | |
1389 | assert(*expr); | |
8dbb86b8 | 1390 | status = lttng_condition_event_rule_matches_append_capture_descriptor( |
20a01d15 SM |
1391 | c, *expr); |
1392 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
81d566c9 JR |
1393 | if (status == LTTNG_CONDITION_STATUS_UNSUPPORTED) { |
1394 | ERR("The capture feature is unsupported by the event-rule condition type"); | |
1395 | } | |
1396 | ||
20a01d15 SM |
1397 | goto error; |
1398 | } | |
1399 | ||
1400 | /* Ownership of event expression moved to `c` */ | |
1401 | *expr = NULL; | |
4624dad0 SM |
1402 | } |
1403 | ||
20a01d15 SM |
1404 | goto end; |
1405 | ||
1406 | error: | |
1407 | lttng_condition_destroy(c); | |
1408 | c = NULL; | |
1409 | ||
4624dad0 | 1410 | end: |
20a01d15 SM |
1411 | lttng_dynamic_pointer_array_reset(&res.capture_descriptors); |
1412 | lttng_event_rule_destroy(res.er); | |
4624dad0 SM |
1413 | return c; |
1414 | } | |
1415 | ||
4624dad0 SM |
1416 | struct condition_descr { |
1417 | const char *name; | |
1418 | struct lttng_condition *(*handler) (int *argc, const char ***argv); | |
1419 | }; | |
1420 | ||
1421 | static const | |
1422 | struct condition_descr condition_descrs[] = { | |
665db063 | 1423 | { "event-rule-matches", handle_condition_event }, |
4624dad0 SM |
1424 | }; |
1425 | ||
1426 | static | |
29bcf415 SM |
1427 | struct lttng_condition *parse_condition(const char *condition_name, int *argc, |
1428 | const char ***argv) | |
4624dad0 SM |
1429 | { |
1430 | int i; | |
1431 | struct lttng_condition *cond; | |
4624dad0 SM |
1432 | const struct condition_descr *descr = NULL; |
1433 | ||
4624dad0 SM |
1434 | for (i = 0; i < ARRAY_SIZE(condition_descrs); i++) { |
1435 | if (strcmp(condition_name, condition_descrs[i].name) == 0) { | |
1436 | descr = &condition_descrs[i]; | |
1437 | break; | |
1438 | } | |
1439 | } | |
1440 | ||
1441 | if (!descr) { | |
1442 | ERR("Unknown condition name '%s'", condition_name); | |
1443 | goto error; | |
1444 | } | |
1445 | ||
1446 | cond = descr->handler(argc, argv); | |
1447 | if (!cond) { | |
1448 | /* The handler has already printed an error message. */ | |
1449 | goto error; | |
1450 | } | |
1451 | ||
1452 | goto end; | |
1453 | error: | |
1454 | cond = NULL; | |
1455 | end: | |
1456 | return cond; | |
1457 | } | |
bbadb5e0 JR |
1458 | |
1459 | static struct lttng_rate_policy *parse_rate_policy(const char *policy_str) | |
1460 | { | |
f78de773 JG |
1461 | int ret; |
1462 | size_t num_token = 0; | |
1463 | struct lttng_dynamic_pointer_array tokens; | |
bbadb5e0 JR |
1464 | struct lttng_rate_policy *policy = NULL; |
1465 | enum lttng_rate_policy_type policy_type; | |
1466 | unsigned long long value; | |
1467 | char *policy_type_str; | |
1468 | char *policy_value_str; | |
1469 | ||
1470 | assert(policy_str); | |
f78de773 | 1471 | lttng_dynamic_pointer_array_init(&tokens, NULL); |
bbadb5e0 | 1472 | |
f78de773 JG |
1473 | /* Rate policy fields are separated by ':'. */ |
1474 | ret = strutils_split(policy_str, ':', 1, &tokens); | |
1475 | if (ret == 0) { | |
1476 | num_token = lttng_dynamic_pointer_array_get_count(&tokens); | |
1477 | } | |
bbadb5e0 JR |
1478 | |
1479 | /* | |
1480 | * Early sanity check that the number of parameter is exactly 2. | |
1481 | * i.e : type:value | |
1482 | */ | |
1483 | if (num_token != 2) { | |
1484 | ERR("Rate policy format is invalid."); | |
1485 | goto end; | |
1486 | } | |
1487 | ||
f78de773 JG |
1488 | policy_type_str = lttng_dynamic_pointer_array_get_pointer(&tokens, 0); |
1489 | policy_value_str = lttng_dynamic_pointer_array_get_pointer(&tokens, 1); | |
bbadb5e0 JR |
1490 | |
1491 | /* Parse the type. */ | |
1492 | if (strcmp(policy_type_str, "once-after") == 0) { | |
1493 | policy_type = LTTNG_RATE_POLICY_TYPE_ONCE_AFTER_N; | |
1494 | } else if (strcmp(policy_type_str, "every") == 0) { | |
1495 | policy_type = LTTNG_RATE_POLICY_TYPE_EVERY_N; | |
1496 | } else { | |
1497 | ERR("Rate policy type `%s` unknown.", policy_type_str); | |
1498 | goto end; | |
1499 | } | |
1500 | ||
1501 | /* Parse the value. */ | |
1502 | if (utils_parse_unsigned_long_long(policy_value_str, &value) != 0) { | |
1503 | ERR("Failed to parse rate policy value `%s` as an integer.", | |
1504 | policy_value_str); | |
1505 | goto end; | |
1506 | } | |
1507 | ||
1508 | if (value == 0) { | |
1509 | ERR("Rate policy value `%s` must be > 0.", policy_value_str); | |
1510 | goto end; | |
1511 | } | |
1512 | ||
1513 | switch (policy_type) { | |
1514 | case LTTNG_RATE_POLICY_TYPE_EVERY_N: | |
1515 | policy = lttng_rate_policy_every_n_create(value); | |
1516 | break; | |
1517 | case LTTNG_RATE_POLICY_TYPE_ONCE_AFTER_N: | |
1518 | policy = lttng_rate_policy_once_after_n_create(value); | |
1519 | break; | |
1520 | default: | |
1521 | abort(); | |
1522 | } | |
1523 | ||
1524 | if (policy == NULL) { | |
1525 | ERR("Failed to create rate policy `%s`.", policy_str); | |
1526 | } | |
1527 | ||
1528 | end: | |
f78de773 | 1529 | lttng_dynamic_pointer_array_reset(&tokens); |
bbadb5e0 JR |
1530 | return policy; |
1531 | } | |
1532 | ||
e45dd625 | 1533 | static const struct argpar_opt_descr notify_action_opt_descrs[] = { |
bbadb5e0 | 1534 | { OPT_RATE_POLICY, '\0', "rate-policy", true }, |
e45dd625 JR |
1535 | ARGPAR_OPT_DESCR_SENTINEL |
1536 | }; | |
4624dad0 | 1537 | |
4624dad0 SM |
1538 | static |
1539 | struct lttng_action *handle_action_notify(int *argc, const char ***argv) | |
1540 | { | |
e45dd625 JR |
1541 | struct lttng_action *action = NULL; |
1542 | struct argpar_state *state = NULL; | |
1543 | struct argpar_item *item = NULL; | |
1544 | char *error = NULL; | |
7f4d5b07 | 1545 | struct lttng_rate_policy *policy = NULL; |
4624dad0 | 1546 | |
e45dd625 JR |
1547 | state = argpar_state_create(*argc, *argv, notify_action_opt_descrs); |
1548 | if (!state) { | |
1549 | ERR("Failed to allocate an argpar state."); | |
1550 | goto error; | |
1551 | } | |
1552 | ||
1553 | while (true) { | |
1554 | enum argpar_state_parse_next_status status; | |
1555 | ||
1556 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1557 | status = argpar_state_parse_next(state, &item, &error); | |
1558 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1559 | ERR("%s", error); | |
1560 | goto error; | |
1561 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1562 | /* Just stop parsing here. */ | |
1563 | break; | |
1564 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1565 | break; | |
1566 | } | |
1567 | ||
1568 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1569 | ||
1570 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
1571 | const struct argpar_item_opt *item_opt = | |
1572 | (const struct argpar_item_opt *) item; | |
1573 | ||
1574 | switch (item_opt->descr->id) { | |
bbadb5e0 | 1575 | case OPT_RATE_POLICY: |
e45dd625 | 1576 | { |
bbadb5e0 JR |
1577 | policy = parse_rate_policy(item_opt->arg); |
1578 | if (!policy) { | |
e45dd625 JR |
1579 | goto error; |
1580 | } | |
e45dd625 JR |
1581 | break; |
1582 | } | |
e45dd625 JR |
1583 | default: |
1584 | abort(); | |
1585 | } | |
1586 | } else { | |
1587 | const struct argpar_item_non_opt *item_non_opt; | |
1588 | ||
1589 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1590 | ||
1591 | item_non_opt = (const struct argpar_item_non_opt *) item; | |
1592 | ||
1593 | switch (item_non_opt->non_opt_index) { | |
1594 | default: | |
1595 | ERR("Unexpected argument `%s`.", | |
1596 | item_non_opt->arg); | |
1597 | goto error; | |
1598 | } | |
1599 | } | |
1600 | } | |
1601 | ||
1602 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1603 | *argv += argpar_state_get_ingested_orig_args(state); | |
1604 | ||
e45dd625 JR |
1605 | action = lttng_action_notify_create(); |
1606 | if (!action) { | |
1607 | ERR("Failed to create notify action"); | |
1608 | goto error; | |
1609 | } | |
1610 | ||
1611 | if (policy) { | |
1612 | enum lttng_action_status status; | |
7f4d5b07 | 1613 | status = lttng_action_notify_set_rate_policy(action, policy); |
e45dd625 | 1614 | if (status != LTTNG_ACTION_STATUS_OK) { |
7f4d5b07 | 1615 | ERR("Failed to set rate policy"); |
e45dd625 JR |
1616 | goto error; |
1617 | } | |
1618 | } | |
1619 | ||
1620 | goto end; | |
1621 | ||
1622 | error: | |
1623 | lttng_action_destroy(action); | |
1624 | action = NULL; | |
e45dd625 | 1625 | end: |
55c6294d | 1626 | free(error); |
7f4d5b07 | 1627 | lttng_rate_policy_destroy(policy); |
e45dd625 JR |
1628 | argpar_state_destroy(state); |
1629 | argpar_item_destroy(item); | |
1630 | return action; | |
1631 | } | |
4624dad0 SM |
1632 | |
1633 | /* | |
e45dd625 | 1634 | * Generic handler for a kind of action that takes a session name and an |
7f4d5b07 | 1635 | * optional rate policy. |
4624dad0 SM |
1636 | */ |
1637 | ||
e45dd625 JR |
1638 | static struct lttng_action *handle_action_simple_session_with_policy(int *argc, |
1639 | const char ***argv, | |
4624dad0 | 1640 | struct lttng_action *(*create_action_cb)(void), |
e45dd625 JR |
1641 | enum lttng_action_status (*set_session_name_cb)( |
1642 | struct lttng_action *, const char *), | |
7f4d5b07 | 1643 | enum lttng_action_status (*set_rate_policy_cb)( |
e45dd625 | 1644 | struct lttng_action *, |
7f4d5b07 | 1645 | const struct lttng_rate_policy *), |
4624dad0 SM |
1646 | const char *action_name) |
1647 | { | |
1648 | struct lttng_action *action = NULL; | |
1649 | struct argpar_state *state = NULL; | |
1650 | struct argpar_item *item = NULL; | |
1651 | const char *session_name_arg = NULL; | |
1652 | char *error = NULL; | |
1653 | enum lttng_action_status action_status; | |
7f4d5b07 | 1654 | struct lttng_rate_policy *policy = NULL; |
e45dd625 JR |
1655 | |
1656 | assert(set_session_name_cb); | |
7f4d5b07 | 1657 | assert(set_rate_policy_cb); |
e45dd625 | 1658 | |
7f4d5b07 | 1659 | const struct argpar_opt_descr rate_policy_opt_descrs[] = { |
bbadb5e0 | 1660 | { OPT_RATE_POLICY, '\0', "rate-policy", true }, |
e45dd625 JR |
1661 | ARGPAR_OPT_DESCR_SENTINEL |
1662 | }; | |
b03a81fb | 1663 | |
7f4d5b07 | 1664 | state = argpar_state_create(*argc, *argv, rate_policy_opt_descrs); |
4624dad0 SM |
1665 | if (!state) { |
1666 | ERR("Failed to allocate an argpar state."); | |
1667 | goto error; | |
1668 | } | |
1669 | ||
1670 | while (true) { | |
1671 | enum argpar_state_parse_next_status status; | |
4624dad0 SM |
1672 | |
1673 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1674 | status = argpar_state_parse_next(state, &item, &error); | |
1675 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1676 | ERR("%s", error); | |
1677 | goto error; | |
e45dd625 JR |
1678 | } else if (status == |
1679 | ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
4624dad0 SM |
1680 | /* Just stop parsing here. */ |
1681 | break; | |
1682 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1683 | break; | |
1684 | } | |
1685 | ||
1686 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
e45dd625 JR |
1687 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { |
1688 | const struct argpar_item_opt *item_opt = | |
1689 | (const struct argpar_item_opt *) item; | |
4624dad0 | 1690 | |
e45dd625 | 1691 | switch (item_opt->descr->id) { |
bbadb5e0 | 1692 | case OPT_RATE_POLICY: |
e45dd625 | 1693 | { |
bbadb5e0 JR |
1694 | policy = parse_rate_policy(item_opt->arg); |
1695 | if (!policy) { | |
e45dd625 JR |
1696 | goto error; |
1697 | } | |
e45dd625 JR |
1698 | break; |
1699 | } | |
e45dd625 JR |
1700 | default: |
1701 | abort(); | |
1702 | } | |
1703 | } else { | |
1704 | const struct argpar_item_non_opt *item_non_opt; | |
1705 | item_non_opt = (const struct argpar_item_non_opt *) item; | |
1706 | ||
1707 | switch (item_non_opt->non_opt_index) { | |
1708 | case 0: | |
1709 | session_name_arg = item_non_opt->arg; | |
1710 | break; | |
1711 | default: | |
1712 | ERR("Unexpected argument `%s`.", | |
1713 | item_non_opt->arg); | |
1714 | goto error; | |
1715 | } | |
4624dad0 SM |
1716 | } |
1717 | } | |
1718 | ||
1719 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1720 | *argv += argpar_state_get_ingested_orig_args(state); | |
1721 | ||
1722 | if (!session_name_arg) { | |
1723 | ERR("Missing session name."); | |
1724 | goto error; | |
1725 | } | |
1726 | ||
1727 | action = create_action_cb(); | |
1728 | if (!action) { | |
1729 | ERR("Failed to allocate %s session action.", action_name); | |
1730 | goto error; | |
1731 | } | |
1732 | ||
1733 | action_status = set_session_name_cb(action, session_name_arg); | |
1734 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1735 | ERR("Failed to set action %s session's session name to '%s'.", | |
1736 | action_name, session_name_arg); | |
1737 | goto error; | |
1738 | } | |
1739 | ||
e45dd625 | 1740 | if (policy) { |
7f4d5b07 | 1741 | action_status = set_rate_policy_cb(action, policy); |
e45dd625 | 1742 | if (action_status != LTTNG_ACTION_STATUS_OK) { |
7f4d5b07 | 1743 | ERR("Failed to set rate policy"); |
e45dd625 JR |
1744 | goto error; |
1745 | } | |
1746 | } | |
1747 | ||
4624dad0 SM |
1748 | goto end; |
1749 | ||
1750 | error: | |
1751 | lttng_action_destroy(action); | |
1752 | action = NULL; | |
97abbc84 | 1753 | argpar_item_destroy(item); |
4624dad0 | 1754 | end: |
7f4d5b07 | 1755 | lttng_rate_policy_destroy(policy); |
cb1b81ea | 1756 | free(error); |
b78ef509 | 1757 | argpar_state_destroy(state); |
4624dad0 SM |
1758 | return action; |
1759 | } | |
1760 | ||
1761 | static | |
1762 | struct lttng_action *handle_action_start_session(int *argc, | |
1763 | const char ***argv) | |
1764 | { | |
e45dd625 JR |
1765 | return handle_action_simple_session_with_policy(argc, argv, |
1766 | lttng_action_start_session_create, | |
1767 | lttng_action_start_session_set_session_name, | |
7f4d5b07 | 1768 | lttng_action_start_session_set_rate_policy, "start"); |
4624dad0 SM |
1769 | } |
1770 | ||
1771 | static | |
1772 | struct lttng_action *handle_action_stop_session(int *argc, | |
1773 | const char ***argv) | |
1774 | { | |
e45dd625 JR |
1775 | return handle_action_simple_session_with_policy(argc, argv, |
1776 | lttng_action_stop_session_create, | |
1777 | lttng_action_stop_session_set_session_name, | |
7f4d5b07 | 1778 | lttng_action_stop_session_set_rate_policy, "stop"); |
4624dad0 SM |
1779 | } |
1780 | ||
1781 | static | |
1782 | struct lttng_action *handle_action_rotate_session(int *argc, | |
1783 | const char ***argv) | |
1784 | { | |
e45dd625 | 1785 | return handle_action_simple_session_with_policy(argc, argv, |
4624dad0 SM |
1786 | lttng_action_rotate_session_create, |
1787 | lttng_action_rotate_session_set_session_name, | |
7f4d5b07 | 1788 | lttng_action_rotate_session_set_rate_policy, |
4624dad0 SM |
1789 | "rotate"); |
1790 | } | |
1791 | ||
1792 | static const struct argpar_opt_descr snapshot_action_opt_descrs[] = { | |
1793 | { OPT_NAME, 'n', "name", true }, | |
1794 | { OPT_MAX_SIZE, 'm', "max-size", true }, | |
1795 | { OPT_CTRL_URL, '\0', "ctrl-url", true }, | |
1796 | { OPT_DATA_URL, '\0', "data-url", true }, | |
1797 | { OPT_URL, '\0', "url", true }, | |
1798 | { OPT_PATH, '\0', "path", true }, | |
bbadb5e0 | 1799 | { OPT_RATE_POLICY, '\0', "rate-policy", true }, |
4624dad0 SM |
1800 | ARGPAR_OPT_DESCR_SENTINEL |
1801 | }; | |
1802 | ||
1803 | static | |
1804 | struct lttng_action *handle_action_snapshot_session(int *argc, | |
1805 | const char ***argv) | |
1806 | { | |
1807 | struct lttng_action *action = NULL; | |
1808 | struct argpar_state *state = NULL; | |
1809 | struct argpar_item *item = NULL; | |
1810 | const char *session_name_arg = NULL; | |
1811 | char *snapshot_name_arg = NULL; | |
1812 | char *ctrl_url_arg = NULL; | |
1813 | char *data_url_arg = NULL; | |
1814 | char *max_size_arg = NULL; | |
1815 | char *url_arg = NULL; | |
1816 | char *path_arg = NULL; | |
1817 | char *error = NULL; | |
1818 | enum lttng_action_status action_status; | |
1819 | struct lttng_snapshot_output *snapshot_output = NULL; | |
7f4d5b07 | 1820 | struct lttng_rate_policy *policy = NULL; |
4624dad0 SM |
1821 | int ret; |
1822 | unsigned int locations_specified = 0; | |
1823 | ||
1824 | state = argpar_state_create(*argc, *argv, snapshot_action_opt_descrs); | |
1825 | if (!state) { | |
1826 | ERR("Failed to allocate an argpar state."); | |
1827 | goto error; | |
1828 | } | |
1829 | ||
1830 | while (true) { | |
1831 | enum argpar_state_parse_next_status status; | |
1832 | ||
1833 | ARGPAR_ITEM_DESTROY_AND_RESET(item); | |
1834 | status = argpar_state_parse_next(state, &item, &error); | |
1835 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
1836 | ERR("%s", error); | |
1837 | goto error; | |
1838 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
1839 | /* Just stop parsing here. */ | |
1840 | break; | |
1841 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
1842 | break; | |
1843 | } | |
1844 | ||
1845 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
1846 | ||
1847 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { | |
1848 | const struct argpar_item_opt *item_opt = | |
1849 | (const struct argpar_item_opt *) item; | |
1850 | ||
1851 | switch (item_opt->descr->id) { | |
1852 | case OPT_NAME: | |
1853 | if (!assign_string(&snapshot_name_arg, item_opt->arg, "--name/-n")) { | |
1854 | goto error; | |
1855 | } | |
1856 | ||
1857 | break; | |
1858 | case OPT_MAX_SIZE: | |
1859 | if (!assign_string(&max_size_arg, item_opt->arg, "--max-size/-m")) { | |
1860 | goto error; | |
1861 | } | |
1862 | ||
1863 | break; | |
1864 | case OPT_CTRL_URL: | |
1865 | if (!assign_string(&ctrl_url_arg, item_opt->arg, "--ctrl-url")) { | |
1866 | goto error; | |
1867 | } | |
1868 | ||
1869 | break; | |
1870 | case OPT_DATA_URL: | |
1871 | if (!assign_string(&data_url_arg, item_opt->arg, "--data-url")) { | |
1872 | goto error; | |
1873 | } | |
1874 | ||
1875 | break; | |
1876 | case OPT_URL: | |
1877 | if (!assign_string(&url_arg, item_opt->arg, "--url")) { | |
1878 | goto error; | |
1879 | } | |
1880 | ||
1881 | break; | |
1882 | case OPT_PATH: | |
1883 | if (!assign_string(&path_arg, item_opt->arg, "--path")) { | |
1884 | goto error; | |
1885 | } | |
1886 | ||
1887 | break; | |
bbadb5e0 | 1888 | case OPT_RATE_POLICY: |
e45dd625 | 1889 | { |
bbadb5e0 JR |
1890 | policy = parse_rate_policy(item_opt->arg); |
1891 | if (!policy) { | |
e45dd625 JR |
1892 | goto error; |
1893 | } | |
e45dd625 JR |
1894 | break; |
1895 | } | |
4624dad0 SM |
1896 | default: |
1897 | abort(); | |
1898 | } | |
1899 | } else { | |
1900 | const struct argpar_item_non_opt *item_non_opt; | |
1901 | ||
1902 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
1903 | ||
1904 | item_non_opt = (const struct argpar_item_non_opt *) item; | |
1905 | ||
1906 | switch (item_non_opt->non_opt_index) { | |
1907 | case 0: | |
1908 | session_name_arg = item_non_opt->arg; | |
1909 | break; | |
1910 | default: | |
1911 | ERR("Unexpected argument `%s`.", | |
1912 | item_non_opt->arg); | |
1913 | goto error; | |
1914 | } | |
1915 | } | |
1916 | } | |
1917 | ||
1918 | *argc -= argpar_state_get_ingested_orig_args(state); | |
1919 | *argv += argpar_state_get_ingested_orig_args(state); | |
1920 | ||
1921 | if (!session_name_arg) { | |
1922 | ERR("Missing session name."); | |
1923 | goto error; | |
1924 | } | |
1925 | ||
1926 | /* --ctrl-url and --data-url must come in pair. */ | |
1927 | if (ctrl_url_arg && !data_url_arg) { | |
1928 | ERR("--ctrl-url is specified, but --data-url is missing."); | |
1929 | goto error; | |
1930 | } | |
1931 | ||
1932 | if (!ctrl_url_arg && data_url_arg) { | |
1933 | ERR("--data-url is specified, but --ctrl-url is missing."); | |
1934 | goto error; | |
1935 | } | |
1936 | ||
1937 | locations_specified += !!(ctrl_url_arg || data_url_arg); | |
1938 | locations_specified += !!url_arg; | |
1939 | locations_specified += !!path_arg; | |
1940 | ||
1941 | /* --ctrl-url/--data-url, --url and --path are mutually exclusive. */ | |
1942 | if (locations_specified > 1) { | |
1943 | ERR("The --ctrl-url/--data-url, --url, and --path options can't be used together."); | |
1944 | goto error; | |
1945 | } | |
1946 | ||
1947 | /* | |
1948 | * Did the user specify an option that implies using a | |
1949 | * custom/unregistered output? | |
1950 | */ | |
1951 | if (url_arg || ctrl_url_arg || path_arg) { | |
1952 | snapshot_output = lttng_snapshot_output_create(); | |
1953 | if (!snapshot_output) { | |
1954 | ERR("Failed to allocate a snapshot output."); | |
1955 | goto error; | |
1956 | } | |
1957 | } | |
1958 | ||
1959 | action = lttng_action_snapshot_session_create(); | |
1960 | if (!action) { | |
1961 | ERR("Failed to allocate snapshot session action."); | |
1962 | goto error; | |
1963 | } | |
1964 | ||
1965 | action_status = lttng_action_snapshot_session_set_session_name( | |
1966 | action, session_name_arg); | |
1967 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1968 | ERR("Failed to set action snapshot session's session name to '%s'.", | |
1969 | session_name_arg); | |
1970 | goto error; | |
1971 | } | |
1972 | ||
1973 | if (snapshot_name_arg) { | |
1974 | if (!snapshot_output) { | |
1975 | ERR("Can't provide a snapshot output name without a snapshot output destination."); | |
1976 | goto error; | |
1977 | } | |
1978 | ||
1979 | ret = lttng_snapshot_output_set_name( | |
1980 | snapshot_name_arg, snapshot_output); | |
1981 | if (ret != 0) { | |
1982 | ERR("Failed to set name of snapshot output."); | |
1983 | goto error; | |
1984 | } | |
1985 | } | |
1986 | ||
1987 | if (max_size_arg) { | |
1988 | uint64_t max_size; | |
1989 | ||
1990 | if (!snapshot_output) { | |
1991 | ERR("Can't provide a snapshot output max size without a snapshot output destination."); | |
1992 | goto error; | |
1993 | } | |
1994 | ||
1995 | ret = utils_parse_size_suffix(max_size_arg, &max_size); | |
1996 | if (ret != 0) { | |
1997 | ERR("Failed to parse `%s` as a size.", max_size_arg); | |
1998 | goto error; | |
1999 | } | |
2000 | ||
2001 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
2002 | if (ret != 0) { | |
2003 | ERR("Failed to set snapshot output's max size to %" PRIu64 " bytes.", | |
2004 | max_size); | |
2005 | goto error; | |
2006 | } | |
2007 | } | |
2008 | ||
2009 | if (url_arg) { | |
2010 | int num_uris; | |
2011 | struct lttng_uri *uris; | |
2012 | ||
2013 | if (!strstr(url_arg, "://")) { | |
2014 | ERR("Failed to parse '%s' as an URL.", url_arg); | |
2015 | goto error; | |
2016 | } | |
2017 | ||
2018 | num_uris = uri_parse_str_urls(url_arg, NULL, &uris); | |
2019 | if (num_uris < 1) { | |
2020 | ERR("Failed to parse '%s' as an URL.", url_arg); | |
2021 | goto error; | |
2022 | } | |
2023 | ||
2024 | if (uris[0].dtype == LTTNG_DST_PATH) { | |
2025 | ret = lttng_snapshot_output_set_local_path( | |
2026 | uris[0].dst.path, snapshot_output); | |
2027 | free(uris); | |
2028 | if (ret != 0) { | |
2029 | ERR("Failed to assign '%s' as a local destination.", | |
2030 | url_arg); | |
2031 | goto error; | |
2032 | } | |
2033 | } else { | |
2034 | ret = lttng_snapshot_output_set_network_url( | |
2035 | url_arg, snapshot_output); | |
2036 | free(uris); | |
2037 | if (ret != 0) { | |
2038 | ERR("Failed to assign '%s' as a network URL.", | |
2039 | url_arg); | |
2040 | goto error; | |
2041 | } | |
2042 | } | |
2043 | } | |
2044 | ||
2045 | if (path_arg) { | |
2046 | ret = lttng_snapshot_output_set_local_path( | |
2047 | path_arg, snapshot_output); | |
2048 | if (ret != 0) { | |
2049 | ERR("Failed to parse '%s' as a local path.", path_arg); | |
2050 | goto error; | |
2051 | } | |
2052 | } | |
2053 | ||
2054 | if (ctrl_url_arg) { | |
2055 | /* | |
2056 | * Two argument form, network output with separate control and | |
2057 | * data URLs. | |
2058 | */ | |
2059 | ret = lttng_snapshot_output_set_network_urls( | |
2060 | ctrl_url_arg, data_url_arg, snapshot_output); | |
2061 | if (ret != 0) { | |
2062 | ERR("Failed to parse `%s` and `%s` as control and data URLs.", | |
2063 | ctrl_url_arg, data_url_arg); | |
2064 | goto error; | |
2065 | } | |
2066 | } | |
2067 | ||
2068 | if (snapshot_output) { | |
2069 | action_status = lttng_action_snapshot_session_set_output( | |
2070 | action, snapshot_output); | |
2071 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
2072 | ERR("Failed to set snapshot session action's output."); | |
2073 | goto error; | |
2074 | } | |
2075 | ||
2076 | /* Ownership of `snapshot_output` has been transferred to the action. */ | |
2077 | snapshot_output = NULL; | |
2078 | } | |
2079 | ||
e45dd625 JR |
2080 | if (policy) { |
2081 | enum lttng_action_status status; | |
7f4d5b07 | 2082 | status = lttng_action_snapshot_session_set_rate_policy( |
e45dd625 JR |
2083 | action, policy); |
2084 | if (status != LTTNG_ACTION_STATUS_OK) { | |
7f4d5b07 | 2085 | ERR("Failed to set rate policy"); |
e45dd625 JR |
2086 | goto error; |
2087 | } | |
2088 | } | |
2089 | ||
4624dad0 SM |
2090 | goto end; |
2091 | ||
2092 | error: | |
2093 | lttng_action_destroy(action); | |
2094 | action = NULL; | |
2095 | free(error); | |
2096 | end: | |
2097 | free(snapshot_name_arg); | |
2098 | free(path_arg); | |
2099 | free(url_arg); | |
2100 | free(ctrl_url_arg); | |
2101 | free(data_url_arg); | |
2102 | free(snapshot_output); | |
f6b73530 | 2103 | free(max_size_arg); |
7f4d5b07 | 2104 | lttng_rate_policy_destroy(policy); |
4624dad0 | 2105 | argpar_state_destroy(state); |
97abbc84 | 2106 | argpar_item_destroy(item); |
4624dad0 SM |
2107 | return action; |
2108 | } | |
2109 | ||
2110 | struct action_descr { | |
2111 | const char *name; | |
2112 | struct lttng_action *(*handler) (int *argc, const char ***argv); | |
2113 | }; | |
2114 | ||
2115 | static const | |
2116 | struct action_descr action_descrs[] = { | |
2117 | { "notify", handle_action_notify }, | |
2118 | { "start-session", handle_action_start_session }, | |
2119 | { "stop-session", handle_action_stop_session }, | |
2120 | { "rotate-session", handle_action_rotate_session }, | |
2121 | { "snapshot-session", handle_action_snapshot_session }, | |
2122 | }; | |
2123 | ||
2124 | static | |
29bcf415 | 2125 | struct lttng_action *parse_action(const char *action_name, int *argc, const char ***argv) |
4624dad0 SM |
2126 | { |
2127 | int i; | |
2128 | struct lttng_action *action; | |
4624dad0 SM |
2129 | const struct action_descr *descr = NULL; |
2130 | ||
4624dad0 SM |
2131 | for (i = 0; i < ARRAY_SIZE(action_descrs); i++) { |
2132 | if (strcmp(action_name, action_descrs[i].name) == 0) { | |
2133 | descr = &action_descrs[i]; | |
2134 | break; | |
2135 | } | |
2136 | } | |
2137 | ||
2138 | if (!descr) { | |
2139 | ERR("Unknown action name: %s", action_name); | |
2140 | goto error; | |
2141 | } | |
2142 | ||
2143 | action = descr->handler(argc, argv); | |
2144 | if (!action) { | |
2145 | /* The handler has already printed an error message. */ | |
2146 | goto error; | |
2147 | } | |
2148 | ||
2149 | goto end; | |
2150 | error: | |
2151 | action = NULL; | |
2152 | end: | |
2153 | return action; | |
2154 | } | |
2155 | ||
2156 | static const | |
2157 | struct argpar_opt_descr add_trigger_options[] = { | |
2158 | { OPT_HELP, 'h', "help", false }, | |
2159 | { OPT_LIST_OPTIONS, '\0', "list-options", false }, | |
29bcf415 SM |
2160 | { OPT_CONDITION, '\0', "condition", true }, |
2161 | { OPT_ACTION, '\0', "action", true }, | |
1d4b59f2 | 2162 | { OPT_NAME, '\0', "name", true }, |
481c5310 | 2163 | { OPT_OWNER_UID, '\0', "owner-uid", true }, |
4624dad0 SM |
2164 | ARGPAR_OPT_DESCR_SENTINEL, |
2165 | }; | |
2166 | ||
2167 | static | |
2168 | void lttng_actions_destructor(void *p) | |
2169 | { | |
2170 | struct lttng_action *action = p; | |
2171 | ||
2172 | lttng_action_destroy(action); | |
2173 | } | |
2174 | ||
2175 | int cmd_add_trigger(int argc, const char **argv) | |
2176 | { | |
2177 | int ret; | |
2178 | int my_argc = argc - 1; | |
2179 | const char **my_argv = argv + 1; | |
2180 | struct lttng_condition *condition = NULL; | |
2181 | struct lttng_dynamic_pointer_array actions; | |
2182 | struct argpar_state *argpar_state = NULL; | |
2183 | struct argpar_item *argpar_item = NULL; | |
702f26c8 | 2184 | struct lttng_action *action_list = NULL; |
4624dad0 SM |
2185 | struct lttng_action *action = NULL; |
2186 | struct lttng_trigger *trigger = NULL; | |
2187 | char *error = NULL; | |
1d4b59f2 | 2188 | char *name = NULL; |
4624dad0 | 2189 | int i; |
481c5310 | 2190 | char *owner_uid = NULL; |
a5c2d2a7 | 2191 | enum lttng_error_code ret_code; |
27692bb8 | 2192 | struct mi_writer *mi_writer = NULL; |
4624dad0 SM |
2193 | |
2194 | lttng_dynamic_pointer_array_init(&actions, lttng_actions_destructor); | |
2195 | ||
27692bb8 JR |
2196 | if (lttng_opt_mi) { |
2197 | mi_writer = mi_lttng_writer_create( | |
2198 | fileno(stdout), lttng_opt_mi); | |
2199 | if (!mi_writer) { | |
2200 | ret = CMD_ERROR; | |
2201 | goto error; | |
2202 | } | |
2203 | ||
2204 | /* Open command element. */ | |
2205 | ret = mi_lttng_writer_command_open(mi_writer, | |
2206 | mi_lttng_element_command_add_trigger); | |
2207 | if (ret) { | |
2208 | ret = CMD_ERROR; | |
2209 | goto error; | |
2210 | } | |
2211 | ||
2212 | /* Open output element. */ | |
2213 | ret = mi_lttng_writer_open_element( | |
2214 | mi_writer, mi_lttng_element_command_output); | |
2215 | if (ret) { | |
2216 | ret = CMD_ERROR; | |
2217 | goto error; | |
2218 | } | |
2219 | } | |
2220 | ||
4624dad0 SM |
2221 | while (true) { |
2222 | enum argpar_state_parse_next_status status; | |
2223 | const struct argpar_item_opt *item_opt; | |
2224 | int ingested_args; | |
2225 | ||
2226 | argpar_state_destroy(argpar_state); | |
2227 | argpar_state = argpar_state_create(my_argc, my_argv, | |
2228 | add_trigger_options); | |
2229 | if (!argpar_state) { | |
2230 | ERR("Failed to create argpar state."); | |
2231 | goto error; | |
2232 | } | |
2233 | ||
2234 | ARGPAR_ITEM_DESTROY_AND_RESET(argpar_item); | |
2235 | status = argpar_state_parse_next(argpar_state, &argpar_item, &error); | |
2236 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { | |
2237 | ERR("%s", error); | |
2238 | goto error; | |
2239 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { | |
2240 | ERR("%s", error); | |
2241 | goto error; | |
2242 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { | |
2243 | break; | |
2244 | } | |
2245 | ||
2246 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); | |
2247 | ||
2248 | if (argpar_item->type == ARGPAR_ITEM_TYPE_NON_OPT) { | |
2249 | const struct argpar_item_non_opt *item_non_opt = | |
2250 | (const struct argpar_item_non_opt *) | |
2251 | argpar_item; | |
2252 | ||
2253 | ERR("Unexpected argument `%s`.", item_non_opt->arg); | |
2254 | goto error; | |
2255 | } | |
2256 | ||
2257 | item_opt = (const struct argpar_item_opt *) argpar_item; | |
2258 | ||
2259 | ingested_args = argpar_state_get_ingested_orig_args( | |
2260 | argpar_state); | |
2261 | ||
2262 | my_argc -= ingested_args; | |
2263 | my_argv += ingested_args; | |
2264 | ||
2265 | switch (item_opt->descr->id) { | |
2266 | case OPT_HELP: | |
2267 | SHOW_HELP(); | |
2268 | ret = 0; | |
2269 | goto end; | |
2270 | case OPT_LIST_OPTIONS: | |
2271 | list_cmd_options_argpar(stdout, add_trigger_options); | |
2272 | ret = 0; | |
2273 | goto end; | |
2274 | case OPT_CONDITION: | |
2275 | { | |
2276 | if (condition) { | |
2277 | ERR("A --condition was already given."); | |
2278 | goto error; | |
2279 | } | |
2280 | ||
29bcf415 | 2281 | condition = parse_condition(item_opt->arg, &my_argc, &my_argv); |
4624dad0 SM |
2282 | if (!condition) { |
2283 | /* | |
2284 | * An error message was already printed by | |
2285 | * parse_condition. | |
2286 | */ | |
2287 | goto error; | |
2288 | } | |
2289 | ||
2290 | break; | |
2291 | } | |
2292 | case OPT_ACTION: | |
2293 | { | |
29bcf415 | 2294 | action = parse_action(item_opt->arg, &my_argc, &my_argv); |
4624dad0 SM |
2295 | if (!action) { |
2296 | /* | |
2297 | * An error message was already printed by | |
2298 | * parse_condition. | |
2299 | */ | |
2300 | goto error; | |
2301 | } | |
2302 | ||
2303 | ret = lttng_dynamic_pointer_array_add_pointer( | |
2304 | &actions, action); | |
2305 | if (ret) { | |
2306 | ERR("Failed to add pointer to pointer array."); | |
2307 | goto error; | |
2308 | } | |
2309 | ||
ce9d7e23 | 2310 | /* Ownership of the action was transferred to the list. */ |
4624dad0 SM |
2311 | action = NULL; |
2312 | ||
2313 | break; | |
2314 | } | |
1d4b59f2 | 2315 | case OPT_NAME: |
4624dad0 | 2316 | { |
1d4b59f2 | 2317 | if (!assign_string(&name, item_opt->arg, "--name")) { |
4624dad0 SM |
2318 | goto error; |
2319 | } | |
2320 | ||
2321 | break; | |
2322 | } | |
481c5310 | 2323 | case OPT_OWNER_UID: |
4624dad0 | 2324 | { |
481c5310 SM |
2325 | if (!assign_string(&owner_uid, item_opt->arg, |
2326 | "--owner-uid")) { | |
4624dad0 SM |
2327 | goto error; |
2328 | } | |
2329 | ||
2330 | break; | |
2331 | } | |
2332 | default: | |
2333 | abort(); | |
2334 | } | |
2335 | } | |
2336 | ||
2337 | if (!condition) { | |
2338 | ERR("Missing --condition."); | |
2339 | goto error; | |
2340 | } | |
2341 | ||
2342 | if (lttng_dynamic_pointer_array_get_count(&actions) == 0) { | |
2343 | ERR("Need at least one --action."); | |
2344 | goto error; | |
2345 | } | |
2346 | ||
702f26c8 JR |
2347 | action_list = lttng_action_list_create(); |
2348 | if (!action_list) { | |
4624dad0 SM |
2349 | goto error; |
2350 | } | |
2351 | ||
2352 | for (i = 0; i < lttng_dynamic_pointer_array_get_count(&actions); i++) { | |
2353 | enum lttng_action_status status; | |
2354 | ||
2355 | action = lttng_dynamic_pointer_array_steal_pointer(&actions, i); | |
2356 | ||
702f26c8 | 2357 | status = lttng_action_list_add_action(action_list, action); |
4624dad0 SM |
2358 | if (status != LTTNG_ACTION_STATUS_OK) { |
2359 | goto error; | |
2360 | } | |
2361 | ||
2362 | /* | |
702f26c8 | 2363 | * The `lttng_action_list_add_action()` takes a reference to |
4624dad0 SM |
2364 | * the action. We can destroy ours. |
2365 | */ | |
2366 | lttng_action_destroy(action); | |
2367 | action = NULL; | |
2368 | } | |
2369 | ||
702f26c8 | 2370 | trigger = lttng_trigger_create(condition, action_list); |
4624dad0 SM |
2371 | if (!trigger) { |
2372 | goto error; | |
2373 | } | |
2374 | ||
481c5310 | 2375 | if (owner_uid) { |
4624dad0 SM |
2376 | enum lttng_trigger_status trigger_status; |
2377 | char *end; | |
2378 | long long uid; | |
2379 | ||
2380 | errno = 0; | |
481c5310 SM |
2381 | uid = strtol(owner_uid, &end, 10); |
2382 | if (end == owner_uid || *end != '\0' || errno != 0) { | |
2383 | ERR("Failed to parse `%s` as a user id.", owner_uid); | |
07e29453 | 2384 | goto error; |
4624dad0 SM |
2385 | } |
2386 | ||
2387 | trigger_status = lttng_trigger_set_owner_uid(trigger, uid); | |
2388 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
2389 | ERR("Failed to set trigger's user identity."); | |
2390 | goto error; | |
2391 | } | |
2392 | } | |
2393 | ||
a5c2d2a7 JG |
2394 | if (name) { |
2395 | ret_code = lttng_register_trigger_with_name(trigger, name); | |
2396 | } else { | |
2397 | ret_code = lttng_register_trigger_with_automatic_name(trigger); | |
2398 | } | |
2399 | ||
2400 | if (ret_code != LTTNG_OK) { | |
2401 | ERR("Failed to register trigger: %s.", | |
2402 | lttng_strerror(-ret_code)); | |
4624dad0 SM |
2403 | goto error; |
2404 | } | |
2405 | ||
27692bb8 JR |
2406 | if (lttng_opt_mi) { |
2407 | ret_code = lttng_trigger_mi_serialize(trigger, mi_writer, NULL); | |
2408 | if (ret_code != LTTNG_OK) { | |
2409 | goto error; | |
2410 | } | |
ef3db6b0 JG |
2411 | } else { |
2412 | const char *returned_trigger_name; | |
2413 | const enum lttng_trigger_status trigger_status = | |
2414 | lttng_trigger_get_name(trigger, | |
2415 | &returned_trigger_name); | |
2416 | ||
2417 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
2418 | WARN("Failed to retrieve the added trigger's name."); | |
2419 | } else { | |
2420 | MSG("Added trigger `%s`.", returned_trigger_name); | |
2421 | } | |
27692bb8 JR |
2422 | } |
2423 | ||
a5c2d2a7 | 2424 | ret = 0; |
4624dad0 SM |
2425 | |
2426 | goto end; | |
2427 | ||
2428 | error: | |
2429 | ret = 1; | |
2430 | ||
2431 | end: | |
27692bb8 | 2432 | /* Mi closing. */ |
1e0b19a2 | 2433 | if (lttng_opt_mi && mi_writer) { |
27692bb8 JR |
2434 | int mi_ret; |
2435 | ||
2436 | /* Close output element. */ | |
2437 | mi_ret = mi_lttng_writer_close_element(mi_writer); | |
2438 | if (mi_ret) { | |
2439 | ret = 1; | |
2440 | goto cleanup; | |
2441 | } | |
2442 | ||
2443 | mi_ret = mi_lttng_writer_write_element_bool(mi_writer, | |
2444 | mi_lttng_element_command_success, ret ? 0 : 1); | |
2445 | if (mi_ret) { | |
2446 | ret = 1; | |
2447 | goto cleanup; | |
2448 | } | |
2449 | ||
2450 | /* Command element close. */ | |
2451 | mi_ret = mi_lttng_writer_command_close(mi_writer); | |
2452 | if (mi_ret) { | |
2453 | ret = 1; | |
2454 | goto cleanup; | |
2455 | } | |
2456 | } | |
2457 | ||
2458 | cleanup: | |
4624dad0 SM |
2459 | argpar_state_destroy(argpar_state); |
2460 | argpar_item_destroy(argpar_item); | |
2461 | lttng_dynamic_pointer_array_reset(&actions); | |
2462 | lttng_condition_destroy(condition); | |
702f26c8 | 2463 | lttng_action_destroy(action_list); |
4624dad0 SM |
2464 | lttng_action_destroy(action); |
2465 | lttng_trigger_destroy(trigger); | |
2466 | free(error); | |
1d4b59f2 | 2467 | free(name); |
481c5310 | 2468 | free(owner_uid); |
27692bb8 JR |
2469 | if (mi_writer && mi_lttng_writer_destroy(mi_writer)) { |
2470 | /* Preserve original error code. */ | |
2471 | ret = ret ? ret : CMD_ERROR; | |
2472 | } | |
2473 | ||
4624dad0 SM |
2474 | return ret; |
2475 | } |