Commit | Line | Data |
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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> |
ea76a8bb | 11 | #include <stdarg.h> |
4624dad0 SM |
12 | |
13 | #include "../command.h" | |
14 | #include "../loglevel.h" | |
15 | #include "../uprobe.h" | |
16 | ||
17 | #include "common/argpar/argpar.h" | |
ea76a8bb | 18 | #include "common/argpar-utils/argpar-utils.h" |
4624dad0 | 19 | #include "common/dynamic-array.h" |
27692bb8 | 20 | #include "common/mi-lttng.h" |
4624dad0 SM |
21 | #include "common/string-utils/string-utils.h" |
22 | #include "common/utils.h" | |
1ceda6f1 | 23 | #include <lttng/domain-internal.h> |
4624dad0 SM |
24 | /* For lttng_event_rule_type_str(). */ |
25 | #include <lttng/event-rule/event-rule-internal.h> | |
26 | #include <lttng/lttng.h> | |
20a01d15 SM |
27 | #include "common/filter/filter-ast.h" |
28 | #include "common/filter/filter-ir.h" | |
29 | #include "common/dynamic-array.h" | |
4624dad0 SM |
30 | |
31 | #if (LTTNG_SYMBOL_NAME_LEN == 256) | |
32 | #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255" | |
33 | #endif | |
34 | ||
35 | #ifdef LTTNG_EMBED_HELP | |
36 | static const char help_msg[] = | |
37 | #include <lttng-add-trigger.1.h> | |
38 | ; | |
39 | #endif | |
40 | ||
41 | enum { | |
42 | OPT_HELP, | |
43 | OPT_LIST_OPTIONS, | |
44 | ||
45 | OPT_CONDITION, | |
46 | OPT_ACTION, | |
47 | OPT_ID, | |
481c5310 | 48 | OPT_OWNER_UID, |
bbadb5e0 | 49 | OPT_RATE_POLICY, |
4624dad0 | 50 | |
50ad0862 | 51 | OPT_NAME, |
4624dad0 | 52 | OPT_FILTER, |
b03a81fb | 53 | OPT_EXCLUDE_NAME, |
50ad0862 | 54 | OPT_EVENT_NAME, |
949f049b | 55 | OPT_LOG_LEVEL, |
4624dad0 | 56 | |
24de704e SM |
57 | OPT_TYPE, |
58 | OPT_LOCATION, | |
4624dad0 | 59 | |
4624dad0 SM |
60 | OPT_MAX_SIZE, |
61 | OPT_DATA_URL, | |
62 | OPT_CTRL_URL, | |
63 | OPT_URL, | |
64 | OPT_PATH, | |
20a01d15 SM |
65 | |
66 | OPT_CAPTURE, | |
4624dad0 SM |
67 | }; |
68 | ||
69 | static const struct argpar_opt_descr event_rule_opt_descrs[] = { | |
4624dad0 | 70 | { OPT_FILTER, 'f', "filter", true }, |
50ad0862 | 71 | { OPT_NAME, 'n', "name", true }, |
b03a81fb | 72 | { OPT_EXCLUDE_NAME, 'x', "exclude-name", true }, |
949f049b | 73 | { OPT_LOG_LEVEL, 'l', "log-level", true }, |
50ad0862 | 74 | { OPT_EVENT_NAME, 'E', "event-name", true }, |
4624dad0 | 75 | |
24de704e SM |
76 | { OPT_TYPE, 't', "type", true }, |
77 | { OPT_LOCATION, 'L', "location", true }, | |
4624dad0 | 78 | |
20a01d15 SM |
79 | /* Capture descriptor */ |
80 | { OPT_CAPTURE, '\0', "capture", true }, | |
81 | ||
4624dad0 SM |
82 | ARGPAR_OPT_DESCR_SENTINEL |
83 | }; | |
84 | ||
85 | static | |
45ce77e1 | 86 | bool has_syscall_prefix(const char *arg) |
4624dad0 | 87 | { |
45ce77e1 JR |
88 | bool matches = false; |
89 | const char kernel_syscall_type_opt_prefix[] = "kernel:syscall"; | |
90 | const size_t kernel_syscall_type_opt_prefix_len = | |
91 | sizeof(kernel_syscall_type_opt_prefix) - 1; | |
92 | const char syscall_type_opt_prefix[] = "syscall"; | |
93 | const size_t syscall_type_opt_prefix_len = | |
94 | sizeof(syscall_type_opt_prefix) - 1; | |
95 | ||
96 | if (strncmp(arg, syscall_type_opt_prefix, | |
97 | syscall_type_opt_prefix_len) == 0) { | |
98 | matches = true; | |
99 | } else if (strncmp(arg, kernel_syscall_type_opt_prefix, | |
100 | kernel_syscall_type_opt_prefix_len) == 0) { | |
101 | matches = true; | |
4624dad0 | 102 | } else { |
45ce77e1 | 103 | matches = false; |
4624dad0 SM |
104 | } |
105 | ||
45ce77e1 | 106 | return matches; |
4624dad0 SM |
107 | } |
108 | ||
109 | static | |
24de704e | 110 | bool assign_event_rule_type(enum lttng_event_rule_type *dest, const char *arg) |
4624dad0 SM |
111 | { |
112 | bool ret; | |
113 | ||
24de704e SM |
114 | if (*dest != LTTNG_EVENT_RULE_TYPE_UNKNOWN) { |
115 | ERR("More than one `--type` was specified."); | |
116 | goto error; | |
117 | } | |
118 | ||
45ce77e1 JR |
119 | if (strcmp(arg, "user") == 0 || strcmp(arg, "user:tracepoint") == 0) { |
120 | *dest = LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT; | |
121 | } else if (strcmp(arg, "kernel") == 0 || | |
122 | strcmp(arg, "kernel:tracepoint") == 0) { | |
123 | *dest = LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT; | |
124 | } else if (strcmp(arg, "jul") == 0 || strcmp(arg, "jul:logging") == 0) { | |
125 | *dest = LTTNG_EVENT_RULE_TYPE_JUL_LOGGING; | |
126 | } else if (strcmp(arg, "log4j") == 0 || | |
127 | strcmp(arg, "log4j:logging") == 0) { | |
128 | *dest = LTTNG_EVENT_RULE_TYPE_LOG4J_LOGGING; | |
129 | } else if (strcmp(arg, "python") == 0 || | |
130 | strcmp(arg, "python:logging") == 0) { | |
131 | *dest = LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING; | |
57739a6b | 132 | } else if (strcmp(arg, "kprobe") == 0 || |
d84633c4 JR |
133 | strcmp(arg, "kernel:kprobe") == 0) { |
134 | *dest = LTTNG_EVENT_RULE_TYPE_KERNEL_KPROBE; | |
e60e9a9a JR |
135 | } else if (strcmp(arg, "kernel:uprobe") == 0) { |
136 | *dest = LTTNG_EVENT_RULE_TYPE_KERNEL_UPROBE; | |
45ce77e1 | 137 | } else if (has_syscall_prefix(arg)) { |
57739a6b JR |
138 | /* |
139 | * Matches the following: | |
140 | * - syscall | |
141 | * - syscall:entry | |
142 | * - syscall:exit | |
143 | * - syscall:entry+exit | |
144 | * - syscall:* | |
213efb0c JR |
145 | * - kernel:syscall |
146 | * - kernel:syscall:entry | |
147 | * - kernel:syscall:exit | |
148 | * - kernel:syscall:entry+exit | |
149 | * - kernel:syscall:* | |
57739a6b JR |
150 | * |
151 | * Validation for the right side is left to further usage sites. | |
152 | */ | |
213efb0c | 153 | *dest = LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL; |
4624dad0 | 154 | } else { |
24de704e SM |
155 | ERR("Invalid `--type` value: %s", arg); |
156 | goto error; | |
4624dad0 SM |
157 | } |
158 | ||
24de704e SM |
159 | ret = true; |
160 | goto end; | |
161 | ||
162 | error: | |
163 | ret = false; | |
164 | ||
165 | end: | |
4624dad0 SM |
166 | return ret; |
167 | } | |
168 | ||
169 | static | |
170 | bool assign_string(char **dest, const char *src, const char *opt_name) | |
171 | { | |
172 | bool ret; | |
173 | ||
174 | if (*dest) { | |
175 | ERR("Duplicate '%s' given.", opt_name); | |
176 | goto error; | |
177 | } | |
178 | ||
179 | *dest = strdup(src); | |
180 | if (!*dest) { | |
181 | PERROR("Failed to allocate string '%s'.", opt_name); | |
182 | goto error; | |
183 | } | |
184 | ||
185 | ret = true; | |
186 | goto end; | |
187 | ||
188 | error: | |
189 | ret = false; | |
190 | ||
191 | end: | |
192 | return ret; | |
193 | } | |
194 | ||
57739a6b | 195 | static bool parse_syscall_emission_site_from_type(const char *str, |
213efb0c | 196 | enum lttng_event_rule_kernel_syscall_emission_site *type) |
57739a6b JR |
197 | { |
198 | bool ret = false; | |
213efb0c JR |
199 | const char kernel_prefix[] = "kernel:"; |
200 | const size_t kernel_prefix_len = sizeof(kernel_prefix) - 1; | |
201 | ||
202 | /* | |
203 | * If the passed string is of the form "kernel:syscall*", move the | |
204 | * pointer passed "kernel:". | |
205 | */ | |
206 | if (strncmp(str, kernel_prefix, kernel_prefix_len) == 0) { | |
207 | str = &str[kernel_prefix_len]; | |
208 | } | |
209 | ||
57739a6b JR |
210 | if (strcmp(str, "syscall") == 0 || |
211 | strcmp(str, "syscall:entry+exit") == 0) { | |
213efb0c | 212 | *type = LTTNG_EVENT_RULE_KERNEL_SYSCALL_EMISSION_SITE_ENTRY_EXIT; |
57739a6b | 213 | } else if (strcmp(str, "syscall:entry") == 0) { |
213efb0c | 214 | *type = LTTNG_EVENT_RULE_KERNEL_SYSCALL_EMISSION_SITE_ENTRY; |
57739a6b | 215 | } else if (strcmp(str, "syscall:exit") == 0) { |
213efb0c | 216 | *type = LTTNG_EVENT_RULE_KERNEL_SYSCALL_EMISSION_SITE_EXIT; |
57739a6b JR |
217 | } else { |
218 | goto error; | |
219 | } | |
220 | ||
221 | ret = true; | |
222 | ||
223 | error: | |
224 | return ret; | |
225 | } | |
226 | ||
4624dad0 | 227 | /* |
45ce77e1 | 228 | * Parse `str` as a log level against the passed event rule type. |
949f049b SM |
229 | * |
230 | * Return the log level in `*log_level`. Return true in `*log_level_only` if | |
231 | * the string specifies exactly this log level, false if it specifies at least | |
232 | * this log level. | |
233 | * | |
234 | * Return true if the string was successfully parsed as a log level string. | |
4624dad0 | 235 | */ |
949f049b | 236 | static bool parse_log_level_string(const char *str, |
45ce77e1 | 237 | enum lttng_event_rule_type event_rule_type, |
949f049b SM |
238 | int *log_level, |
239 | bool *log_level_only) | |
4624dad0 | 240 | { |
949f049b SM |
241 | bool ret; |
242 | ||
45ce77e1 JR |
243 | switch (event_rule_type) { |
244 | case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT: | |
4624dad0 | 245 | { |
949f049b SM |
246 | enum lttng_loglevel log_level_min, log_level_max; |
247 | if (!loglevel_parse_range_string( | |
248 | str, &log_level_min, &log_level_max)) { | |
249 | goto error; | |
250 | } | |
4624dad0 | 251 | |
949f049b SM |
252 | /* Only support VAL and VAL.. for now. */ |
253 | if (log_level_min != log_level_max && | |
254 | log_level_max != LTTNG_LOGLEVEL_EMERG) { | |
255 | goto error; | |
256 | } | |
257 | ||
258 | *log_level = (int) log_level_min; | |
259 | *log_level_only = log_level_min == log_level_max; | |
260 | break; | |
4624dad0 | 261 | } |
45ce77e1 | 262 | case LTTNG_EVENT_RULE_TYPE_LOG4J_LOGGING: |
4624dad0 | 263 | { |
949f049b SM |
264 | enum lttng_loglevel_log4j log_level_min, log_level_max; |
265 | if (!loglevel_log4j_parse_range_string( | |
266 | str, &log_level_min, &log_level_max)) { | |
267 | goto error; | |
268 | } | |
4624dad0 | 269 | |
949f049b SM |
270 | /* Only support VAL and VAL.. for now. */ |
271 | if (log_level_min != log_level_max && | |
272 | log_level_max != LTTNG_LOGLEVEL_LOG4J_FATAL) { | |
273 | goto error; | |
274 | } | |
275 | ||
276 | *log_level = (int) log_level_min; | |
277 | *log_level_only = log_level_min == log_level_max; | |
278 | break; | |
4624dad0 | 279 | } |
45ce77e1 | 280 | case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING: |
4624dad0 | 281 | { |
949f049b SM |
282 | enum lttng_loglevel_jul log_level_min, log_level_max; |
283 | if (!loglevel_jul_parse_range_string( | |
284 | str, &log_level_min, &log_level_max)) { | |
285 | goto error; | |
286 | } | |
4624dad0 | 287 | |
949f049b SM |
288 | /* Only support VAL and VAL.. for now. */ |
289 | if (log_level_min != log_level_max && | |
290 | log_level_max != LTTNG_LOGLEVEL_JUL_SEVERE) { | |
291 | goto error; | |
292 | } | |
293 | ||
294 | *log_level = (int) log_level_min; | |
295 | *log_level_only = log_level_min == log_level_max; | |
296 | break; | |
4624dad0 | 297 | } |
45ce77e1 | 298 | case LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING: |
4624dad0 | 299 | { |
949f049b SM |
300 | enum lttng_loglevel_python log_level_min, log_level_max; |
301 | if (!loglevel_python_parse_range_string( | |
302 | str, &log_level_min, &log_level_max)) { | |
303 | goto error; | |
304 | } | |
4624dad0 | 305 | |
949f049b SM |
306 | /* Only support VAL and VAL.. for now. */ |
307 | if (log_level_min != log_level_max && | |
308 | log_level_max != | |
309 | LTTNG_LOGLEVEL_PYTHON_CRITICAL) { | |
310 | goto error; | |
311 | } | |
312 | ||
313 | *log_level = (int) log_level_min; | |
314 | *log_level_only = log_level_min == log_level_max; | |
315 | break; | |
4624dad0 SM |
316 | } |
317 | default: | |
318 | /* Invalid domain type. */ | |
319 | abort(); | |
320 | } | |
949f049b SM |
321 | |
322 | ret = true; | |
323 | goto end; | |
324 | ||
325 | error: | |
326 | ret = false; | |
327 | ||
328 | end: | |
329 | return ret; | |
4624dad0 SM |
330 | } |
331 | ||
332 | static int parse_kernel_probe_opts(const char *source, | |
333 | struct lttng_kernel_probe_location **location) | |
334 | { | |
335 | int ret = 0; | |
336 | int match; | |
337 | char s_hex[19]; | |
338 | char name[LTTNG_SYMBOL_NAME_LEN]; | |
339 | char *symbol_name = NULL; | |
340 | uint64_t offset; | |
341 | ||
342 | /* Check for symbol+offset. */ | |
343 | match = sscanf(source, | |
344 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API | |
345 | "[^'+']+%18s", | |
346 | name, s_hex); | |
347 | if (match == 2) { | |
348 | if (*s_hex == '\0') { | |
349 | ERR("Kernel probe symbol offset is missing."); | |
350 | goto error; | |
351 | } | |
352 | ||
353 | symbol_name = strndup(name, LTTNG_SYMBOL_NAME_LEN); | |
354 | if (!symbol_name) { | |
355 | PERROR("Failed to copy kernel probe location symbol name."); | |
356 | goto error; | |
357 | } | |
358 | offset = strtoul(s_hex, NULL, 0); | |
359 | ||
360 | *location = lttng_kernel_probe_location_symbol_create( | |
361 | symbol_name, offset); | |
f6e30a8a | 362 | if (!*location) { |
4624dad0 SM |
363 | ERR("Failed to create symbol kernel probe location."); |
364 | goto error; | |
365 | } | |
366 | ||
367 | goto end; | |
368 | } | |
369 | ||
370 | /* Check for symbol. */ | |
371 | if (isalpha(name[0]) || name[0] == '_') { | |
372 | match = sscanf(source, | |
373 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API | |
374 | "s", | |
375 | name); | |
376 | if (match == 1) { | |
377 | symbol_name = strndup(name, LTTNG_SYMBOL_NAME_LEN); | |
378 | if (!symbol_name) { | |
379 | ERR("Failed to copy kernel probe location symbol name."); | |
380 | goto error; | |
381 | } | |
382 | ||
383 | *location = lttng_kernel_probe_location_symbol_create( | |
384 | symbol_name, 0); | |
14f27f79 | 385 | if (!*location) { |
4624dad0 SM |
386 | ERR("Failed to create symbol kernel probe location."); |
387 | goto error; | |
388 | } | |
389 | ||
390 | goto end; | |
391 | } | |
392 | } | |
393 | ||
394 | /* Check for address. */ | |
395 | match = sscanf(source, "%18s", s_hex); | |
396 | if (match > 0) { | |
397 | uint64_t address; | |
398 | ||
399 | if (*s_hex == '\0') { | |
400 | ERR("Invalid kernel probe location address."); | |
401 | goto error; | |
402 | } | |
403 | ||
404 | address = strtoul(s_hex, NULL, 0); | |
405 | *location = lttng_kernel_probe_location_address_create(address); | |
5c6ca809 | 406 | if (!*location) { |
4624dad0 SM |
407 | ERR("Failed to create symbol kernel probe location."); |
408 | goto error; | |
409 | } | |
410 | ||
411 | goto end; | |
412 | } | |
413 | ||
414 | error: | |
415 | /* No match */ | |
416 | ret = -1; | |
417 | *location = NULL; | |
418 | ||
419 | end: | |
420 | free(symbol_name); | |
421 | return ret; | |
422 | } | |
423 | ||
20a01d15 SM |
424 | static |
425 | struct lttng_event_expr *ir_op_load_expr_to_event_expr( | |
3363a4c3 JG |
426 | const struct ir_load_expression *load_expr, |
427 | const char *capture_str) | |
20a01d15 SM |
428 | { |
429 | char *provider_name = NULL; | |
430 | struct lttng_event_expr *event_expr = NULL; | |
3363a4c3 JG |
431 | const struct ir_load_expression_op *load_expr_op = load_expr->child; |
432 | const enum ir_load_expression_type load_expr_child_type = | |
433 | load_expr_op->type; | |
20a01d15 | 434 | |
3363a4c3 | 435 | switch (load_expr_child_type) { |
20a01d15 SM |
436 | case IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT: |
437 | case IR_LOAD_EXPRESSION_GET_CONTEXT_ROOT: | |
438 | { | |
439 | const char *field_name; | |
440 | ||
441 | load_expr_op = load_expr_op->next; | |
442 | assert(load_expr_op); | |
443 | assert(load_expr_op->type == IR_LOAD_EXPRESSION_GET_SYMBOL); | |
444 | field_name = load_expr_op->u.symbol; | |
445 | assert(field_name); | |
446 | ||
3363a4c3 | 447 | event_expr = load_expr_child_type == IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT ? |
20a01d15 SM |
448 | lttng_event_expr_event_payload_field_create(field_name) : |
449 | lttng_event_expr_channel_context_field_create(field_name); | |
450 | if (!event_expr) { | |
451 | ERR("Failed to create %s event expression: field name = `%s`.", | |
3363a4c3 | 452 | load_expr_child_type == IR_LOAD_EXPRESSION_GET_PAYLOAD_ROOT ? |
20a01d15 SM |
453 | "payload field" : "channel context", |
454 | field_name); | |
455 | goto error; | |
456 | } | |
457 | ||
458 | break; | |
459 | } | |
460 | case IR_LOAD_EXPRESSION_GET_APP_CONTEXT_ROOT: | |
461 | { | |
462 | const char *colon; | |
463 | const char *type_name; | |
464 | const char *field_name; | |
465 | ||
466 | load_expr_op = load_expr_op->next; | |
467 | assert(load_expr_op); | |
468 | assert(load_expr_op->type == IR_LOAD_EXPRESSION_GET_SYMBOL); | |
469 | field_name = load_expr_op->u.symbol; | |
470 | assert(field_name); | |
471 | ||
472 | /* | |
473 | * The field name needs to be of the form PROVIDER:TYPE. We | |
474 | * split it here. | |
475 | */ | |
476 | colon = strchr(field_name, ':'); | |
477 | if (!colon) { | |
478 | ERR("Invalid app-specific context field name: missing colon in `%s`.", | |
479 | field_name); | |
480 | goto error; | |
481 | } | |
482 | ||
483 | type_name = colon + 1; | |
484 | if (*type_name == '\0') { | |
485 | ERR("Invalid app-specific context field name: missing type name after colon in `%s`.", | |
486 | field_name); | |
487 | goto error; | |
488 | } | |
489 | ||
490 | provider_name = strndup(field_name, colon - field_name); | |
491 | if (!provider_name) { | |
492 | PERROR("Failed to allocate field name string"); | |
493 | goto error; | |
494 | } | |
495 | ||
496 | event_expr = lttng_event_expr_app_specific_context_field_create( | |
497 | provider_name, type_name); | |
498 | if (!event_expr) { | |
499 | ERR("Failed to create app-specific context field event expression: provider name = `%s`, type name = `%s`", | |
500 | provider_name, type_name); | |
501 | goto error; | |
502 | } | |
503 | ||
504 | break; | |
505 | } | |
506 | default: | |
507 | ERR("%s: unexpected load expr type %d.", __func__, | |
508 | load_expr_op->type); | |
509 | abort(); | |
510 | } | |
511 | ||
512 | load_expr_op = load_expr_op->next; | |
513 | ||
514 | /* There may be a single array index after that. */ | |
515 | if (load_expr_op->type == IR_LOAD_EXPRESSION_GET_INDEX) { | |
516 | struct lttng_event_expr *index_event_expr; | |
517 | const uint64_t index = load_expr_op->u.index; | |
518 | ||
519 | index_event_expr = lttng_event_expr_array_field_element_create(event_expr, index); | |
520 | if (!index_event_expr) { | |
521 | ERR("Failed to create array field element event expression."); | |
522 | goto error; | |
523 | } | |
524 | ||
525 | event_expr = index_event_expr; | |
526 | load_expr_op = load_expr_op->next; | |
527 | } | |
528 | ||
529 | switch (load_expr_op->type) { | |
530 | case IR_LOAD_EXPRESSION_LOAD_FIELD: | |
531 | /* | |
532 | * This is what we expect, IR_LOAD_EXPRESSION_LOAD_FIELD is | |
533 | * always found at the end of the chain. | |
534 | */ | |
535 | break; | |
536 | case IR_LOAD_EXPRESSION_GET_SYMBOL: | |
537 | ERR("While parsing expression `%s`: Capturing subfields is not supported.", | |
538 | capture_str); | |
539 | goto error; | |
540 | ||
541 | default: | |
542 | ERR("%s: unexpected load expression operator %s.", __func__, | |
543 | ir_load_expression_type_str(load_expr_op->type)); | |
544 | abort(); | |
545 | } | |
546 | ||
547 | goto end; | |
548 | ||
549 | error: | |
550 | lttng_event_expr_destroy(event_expr); | |
551 | event_expr = NULL; | |
552 | ||
553 | end: | |
554 | free(provider_name); | |
555 | ||
556 | return event_expr; | |
557 | } | |
558 | ||
559 | static | |
560 | struct lttng_event_expr *ir_op_load_to_event_expr( | |
561 | const struct ir_op *ir, const char *capture_str) | |
562 | { | |
563 | struct lttng_event_expr *event_expr = NULL; | |
564 | ||
565 | assert(ir->op == IR_OP_LOAD); | |
566 | ||
567 | switch (ir->data_type) { | |
568 | case IR_DATA_EXPRESSION: | |
569 | { | |
570 | const struct ir_load_expression *ir_load_expr = | |
571 | ir->u.load.u.expression; | |
572 | ||
573 | event_expr = ir_op_load_expr_to_event_expr( | |
574 | ir_load_expr, capture_str); | |
575 | break; | |
576 | } | |
577 | default: | |
578 | ERR("%s: unexpected data type: %s.", __func__, | |
579 | ir_data_type_str(ir->data_type)); | |
580 | abort(); | |
581 | } | |
582 | ||
583 | return event_expr; | |
584 | } | |
585 | ||
586 | static | |
587 | const char *ir_operator_type_human_str(enum ir_op_type op) | |
588 | { | |
589 | const char *name; | |
590 | ||
591 | switch (op) { | |
592 | case IR_OP_BINARY: | |
593 | name = "Binary"; | |
594 | break; | |
595 | case IR_OP_UNARY: | |
596 | name = "Unary"; | |
597 | break; | |
598 | case IR_OP_LOGICAL: | |
599 | name = "Logical"; | |
600 | break; | |
601 | default: | |
602 | abort(); | |
603 | } | |
604 | ||
605 | return name; | |
606 | } | |
607 | ||
608 | static | |
609 | struct lttng_event_expr *ir_op_root_to_event_expr(const struct ir_op *ir, | |
610 | const char *capture_str) | |
611 | { | |
612 | struct lttng_event_expr *event_expr = NULL; | |
613 | ||
614 | assert(ir->op == IR_OP_ROOT); | |
615 | ir = ir->u.root.child; | |
616 | ||
617 | switch (ir->op) { | |
618 | case IR_OP_LOAD: | |
619 | event_expr = ir_op_load_to_event_expr(ir, capture_str); | |
620 | break; | |
621 | case IR_OP_BINARY: | |
622 | case IR_OP_UNARY: | |
623 | case IR_OP_LOGICAL: | |
624 | ERR("While parsing expression `%s`: %s operators are not allowed in capture expressions.", | |
625 | capture_str, | |
626 | ir_operator_type_human_str(ir->op)); | |
627 | break; | |
628 | default: | |
629 | ERR("%s: unexpected IR op type: %s.", __func__, | |
630 | ir_op_type_str(ir->op)); | |
631 | abort(); | |
632 | } | |
633 | ||
634 | return event_expr; | |
635 | } | |
636 | ||
637 | static | |
638 | void destroy_event_expr(void *ptr) | |
639 | { | |
640 | lttng_event_expr_destroy(ptr); | |
641 | } | |
642 | ||
643 | struct parse_event_rule_res { | |
644 | /* Owned by this. */ | |
645 | struct lttng_event_rule *er; | |
646 | ||
647 | /* Array of `struct lttng_event_expr *` */ | |
648 | struct lttng_dynamic_pointer_array capture_descriptors; | |
649 | }; | |
650 | ||
651 | static | |
5f5ce3e6 SM |
652 | struct parse_event_rule_res parse_event_rule(int *argc, const char ***argv, |
653 | int argc_offset) | |
4624dad0 | 654 | { |
4624dad0 SM |
655 | enum lttng_event_rule_type event_rule_type = |
656 | LTTNG_EVENT_RULE_TYPE_UNKNOWN; | |
ea76a8bb SM |
657 | struct argpar_iter *argpar_iter = NULL; |
658 | const struct argpar_item *argpar_item = NULL; | |
4624dad0 SM |
659 | int consumed_args = -1; |
660 | struct lttng_kernel_probe_location *kernel_probe_location = NULL; | |
661 | struct lttng_userspace_probe_location *userspace_probe_location = NULL; | |
20a01d15 SM |
662 | struct parse_event_rule_res res = { 0 }; |
663 | struct lttng_event_expr *event_expr = NULL; | |
664 | struct filter_parser_ctx *parser_ctx = NULL; | |
85b05318 | 665 | struct lttng_log_level_rule *log_level_rule = NULL; |
4624dad0 | 666 | |
57739a6b JR |
667 | /* Event rule type option */ |
668 | char *event_rule_type_str = NULL; | |
669 | ||
50ad0862 SM |
670 | /* Tracepoint and syscall options. */ |
671 | char *name = NULL; | |
b03a81fb SM |
672 | /* Array of strings. */ |
673 | struct lttng_dynamic_pointer_array exclude_names; | |
4624dad0 | 674 | |
24de704e SM |
675 | /* For userspace / kernel probe and function. */ |
676 | char *location = NULL; | |
677 | char *event_name = NULL; | |
4624dad0 SM |
678 | |
679 | /* Filter. */ | |
680 | char *filter = NULL; | |
681 | ||
4624dad0 | 682 | /* Log level. */ |
949f049b | 683 | char *log_level_str = NULL; |
4624dad0 | 684 | |
20a01d15 SM |
685 | lttng_dynamic_pointer_array_init(&res.capture_descriptors, |
686 | destroy_event_expr); | |
b03a81fb SM |
687 | |
688 | lttng_dynamic_pointer_array_init(&exclude_names, free); | |
689 | ||
ea76a8bb SM |
690 | argpar_iter = argpar_iter_create(*argc, *argv, event_rule_opt_descrs); |
691 | if (!argpar_iter) { | |
692 | ERR("Failed to allocate an argpar iter."); | |
4624dad0 SM |
693 | goto error; |
694 | } | |
695 | ||
696 | while (true) { | |
ea76a8bb | 697 | enum parse_next_item_status status; |
4624dad0 | 698 | |
5f5ce3e6 SM |
699 | status = parse_next_item(argpar_iter, &argpar_item, |
700 | argc_offset, *argv, false, NULL); | |
ea76a8bb | 701 | if (status == PARSE_NEXT_ITEM_STATUS_ERROR) { |
4624dad0 | 702 | goto error; |
ea76a8bb | 703 | } else if (status == PARSE_NEXT_ITEM_STATUS_END) { |
4624dad0 SM |
704 | break; |
705 | } | |
706 | ||
ea76a8bb | 707 | assert(status == PARSE_NEXT_ITEM_STATUS_OK); |
4624dad0 | 708 | |
ea76a8bb SM |
709 | if (argpar_item_type(argpar_item) == ARGPAR_ITEM_TYPE_OPT) { |
710 | const struct argpar_opt_descr *descr = | |
711 | argpar_item_opt_descr(argpar_item); | |
712 | const char *arg = argpar_item_opt_arg(argpar_item); | |
4624dad0 | 713 | |
ea76a8bb | 714 | switch (descr->id) { |
24de704e | 715 | case OPT_TYPE: |
ea76a8bb | 716 | if (!assign_event_rule_type(&event_rule_type, arg)) { |
4624dad0 SM |
717 | goto error; |
718 | } | |
719 | ||
57739a6b | 720 | /* Save the string for later use. */ |
ea76a8bb SM |
721 | if (!assign_string(&event_rule_type_str, arg, |
722 | "--type/-t")) { | |
57739a6b JR |
723 | goto error; |
724 | } | |
725 | ||
4624dad0 | 726 | break; |
24de704e | 727 | case OPT_LOCATION: |
ea76a8bb | 728 | if (!assign_string(&location, arg, |
24de704e | 729 | "--location/-L")) { |
50ad0862 SM |
730 | goto error; |
731 | } | |
732 | ||
733 | break; | |
734 | case OPT_EVENT_NAME: | |
ea76a8bb SM |
735 | if (!assign_string(&event_name, arg, |
736 | "--event-name/-E")) { | |
50ad0862 | 737 | goto error; |
4624dad0 SM |
738 | } |
739 | ||
4624dad0 SM |
740 | break; |
741 | case OPT_FILTER: | |
ea76a8bb SM |
742 | if (!assign_string(&filter, arg, |
743 | "--filter/-f")) { | |
4624dad0 SM |
744 | goto error; |
745 | } | |
746 | ||
747 | break; | |
50ad0862 | 748 | case OPT_NAME: |
ea76a8bb SM |
749 | if (!assign_string(&name, arg, |
750 | "--name/-n")) { | |
50ad0862 SM |
751 | goto error; |
752 | } | |
753 | ||
754 | break; | |
b03a81fb SM |
755 | case OPT_EXCLUDE_NAME: |
756 | { | |
757 | int ret; | |
758 | ||
759 | ret = lttng_dynamic_pointer_array_add_pointer( | |
760 | &exclude_names, | |
ea76a8bb | 761 | strdup(arg)); |
b03a81fb SM |
762 | if (ret != 0) { |
763 | ERR("Failed to add pointer to dynamic pointer array."); | |
4624dad0 SM |
764 | goto error; |
765 | } | |
766 | ||
767 | break; | |
b03a81fb | 768 | } |
949f049b | 769 | case OPT_LOG_LEVEL: |
ea76a8bb SM |
770 | if (!assign_string(&log_level_str, arg, |
771 | "--log-level/-l")) { | |
4624dad0 SM |
772 | goto error; |
773 | } | |
774 | ||
4624dad0 | 775 | break; |
20a01d15 SM |
776 | case OPT_CAPTURE: |
777 | { | |
778 | int ret; | |
20a01d15 SM |
779 | |
780 | ret = filter_parser_ctx_create_from_filter_expression( | |
ea76a8bb | 781 | arg, &parser_ctx); |
20a01d15 | 782 | if (ret) { |
ea76a8bb | 783 | ERR("Failed to parse capture expression `%s`.", arg); |
20a01d15 SM |
784 | goto error; |
785 | } | |
786 | ||
787 | event_expr = ir_op_root_to_event_expr( | |
ea76a8bb | 788 | parser_ctx->ir_root, arg); |
20a01d15 SM |
789 | if (!event_expr) { |
790 | /* | |
791 | * ir_op_root_to_event_expr has printed | |
792 | * an error message. | |
793 | */ | |
794 | goto error; | |
795 | } | |
796 | ||
797 | ret = lttng_dynamic_pointer_array_add_pointer( | |
798 | &res.capture_descriptors, | |
799 | event_expr); | |
800 | if (ret) { | |
801 | goto error; | |
802 | } | |
803 | ||
804 | /* | |
805 | * The ownership of event expression was | |
806 | * transferred to the dynamic array. | |
807 | */ | |
808 | event_expr = NULL; | |
809 | ||
810 | break; | |
811 | } | |
4624dad0 SM |
812 | default: |
813 | abort(); | |
814 | } | |
815 | } else { | |
ea76a8bb | 816 | const char *arg = argpar_item_non_opt_arg(argpar_item); |
4624dad0 | 817 | |
50ad0862 | 818 | /* Don't accept non-option arguments. */ |
ea76a8bb | 819 | ERR("Unexpected argument '%s'", arg); |
50ad0862 | 820 | goto error; |
4624dad0 SM |
821 | } |
822 | } | |
823 | ||
824 | if (event_rule_type == LTTNG_EVENT_RULE_TYPE_UNKNOWN) { | |
5dad5529 JG |
825 | ERR("Event rule requires a --type."); |
826 | goto error; | |
4624dad0 SM |
827 | } |
828 | ||
829 | /* | |
45ce77e1 JR |
830 | * Option --name is applicable to event rules of type kernel, user, jul, |
831 | * log4j,python and syscall. If --name is omitted, it is implicitly | |
832 | * "*". | |
4624dad0 | 833 | */ |
50ad0862 | 834 | switch (event_rule_type) { |
45ce77e1 JR |
835 | case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT: |
836 | case LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT: | |
837 | case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING: | |
838 | case LTTNG_EVENT_RULE_TYPE_LOG4J_LOGGING: | |
839 | case LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING: | |
213efb0c | 840 | case LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL: |
50ad0862 SM |
841 | if (!name) { |
842 | name = strdup("*"); | |
4624dad0 | 843 | } |
50ad0862 | 844 | break; |
4624dad0 | 845 | |
50ad0862 SM |
846 | default: |
847 | if (name) { | |
848 | ERR("Can't use --name with %s event rules.", | |
849 | lttng_event_rule_type_str( | |
850 | event_rule_type)); | |
4624dad0 SM |
851 | goto error; |
852 | } | |
853 | ||
b03a81fb SM |
854 | if (lttng_dynamic_pointer_array_get_count(&exclude_names) > 0) { |
855 | ERR("Can't use --exclude-name/-x with %s event rules.", | |
50ad0862 SM |
856 | lttng_event_rule_type_str( |
857 | event_rule_type)); | |
858 | goto error; | |
859 | } | |
4624dad0 SM |
860 | } |
861 | ||
862 | /* | |
24de704e SM |
863 | * Option --location is only applicable to (and mandatory for) event |
864 | * rules of type {k,u}probe and function. | |
865 | * | |
50ad0862 | 866 | * Option --event-name is only applicable to event rules of type probe. |
24de704e | 867 | * If omitted, it defaults to the location. |
4624dad0 | 868 | */ |
50ad0862 | 869 | switch (event_rule_type) { |
d84633c4 | 870 | case LTTNG_EVENT_RULE_TYPE_KERNEL_KPROBE: |
e60e9a9a | 871 | case LTTNG_EVENT_RULE_TYPE_KERNEL_UPROBE: |
24de704e SM |
872 | if (!location) { |
873 | ERR("Event rule of type %s requires a --location.", | |
874 | lttng_event_rule_type_str(event_rule_type)); | |
875 | goto error; | |
876 | } | |
877 | ||
878 | if (!event_name) { | |
879 | event_name = strdup(location); | |
50ad0862 | 880 | } |
4624dad0 | 881 | |
50ad0862 SM |
882 | break; |
883 | ||
884 | default: | |
24de704e SM |
885 | if (location) { |
886 | ERR("Can't use --location with %s event rules.", | |
887 | lttng_event_rule_type_str(event_rule_type)); | |
888 | goto error; | |
889 | } | |
890 | ||
891 | if (event_name) { | |
50ad0862 SM |
892 | ERR("Can't use --event-name with %s event rules.", |
893 | lttng_event_rule_type_str( | |
894 | event_rule_type)); | |
895 | goto error; | |
896 | } | |
4624dad0 SM |
897 | } |
898 | ||
899 | /* | |
900 | * Update *argc and *argv so our caller can keep parsing what follows. | |
901 | */ | |
ea76a8bb | 902 | consumed_args = argpar_iter_ingested_orig_args(argpar_iter); |
4624dad0 SM |
903 | assert(consumed_args >= 0); |
904 | *argc -= consumed_args; | |
905 | *argv += consumed_args; | |
906 | ||
4624dad0 SM |
907 | /* |
908 | * Adding a filter to a probe, function or userspace-probe would be | |
909 | * denied by the kernel tracer as it's not supported at the moment. We | |
910 | * do an early check here to warn the user. | |
911 | */ | |
45ce77e1 | 912 | if (filter) { |
4624dad0 | 913 | switch (event_rule_type) { |
45ce77e1 JR |
914 | case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT: |
915 | case LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT: | |
916 | case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING: | |
917 | case LTTNG_EVENT_RULE_TYPE_LOG4J_LOGGING: | |
918 | case LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING: | |
213efb0c | 919 | case LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL: |
4624dad0 SM |
920 | break; |
921 | default: | |
922 | ERR("Filter expressions are not supported for %s event rules.", | |
923 | lttng_event_rule_type_str(event_rule_type)); | |
924 | goto error; | |
925 | } | |
926 | } | |
927 | ||
45ce77e1 JR |
928 | /* |
929 | * If --exclude-name/-x was passed, split it into an exclusion list. | |
930 | * Exclusions are only supported by | |
931 | * LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT for now. | |
932 | */ | |
b03a81fb | 933 | if (lttng_dynamic_pointer_array_get_count(&exclude_names) > 0) { |
45ce77e1 | 934 | if (event_rule_type != LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT) { |
4624dad0 | 935 | ERR("Event name exclusions are not yet implemented for %s event rules.", |
45ce77e1 | 936 | lttng_event_rule_type_str(event_rule_type)); |
4624dad0 SM |
937 | goto error; |
938 | } | |
939 | ||
f78de773 | 940 | if (validate_exclusion_list(name, &exclude_names) != 0) { |
b03a81fb SM |
941 | /* |
942 | * Assume validate_exclusion_list already prints an | |
943 | * error message. | |
944 | */ | |
4624dad0 SM |
945 | goto error; |
946 | } | |
947 | } | |
948 | ||
949f049b | 949 | if (log_level_str) { |
45ce77e1 JR |
950 | switch (event_rule_type) { |
951 | case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT: | |
952 | case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING: | |
953 | case LTTNG_EVENT_RULE_TYPE_LOG4J_LOGGING: | |
954 | case LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING: | |
955 | { | |
956 | int log_level; | |
957 | bool log_level_only; | |
949f049b | 958 | |
45ce77e1 JR |
959 | if (strcmp(log_level_str, "..") == 0) { |
960 | /* | |
961 | * ".." is the same as passing no log level | |
962 | * option and correspond to the "ANY" case. | |
963 | */ | |
964 | break; | |
965 | } | |
966 | ||
967 | if (!parse_log_level_string(log_level_str, event_rule_type, | |
968 | &log_level, &log_level_only)) { | |
969 | ERR("Failed to parse log level string `%s`.", | |
970 | log_level_str); | |
971 | goto error; | |
972 | } | |
973 | ||
974 | if (log_level_only) { | |
975 | log_level_rule = lttng_log_level_rule_exactly_create(log_level); | |
976 | } else { | |
977 | log_level_rule = lttng_log_level_rule_at_least_as_severe_as_create(log_level); | |
978 | } | |
979 | ||
980 | if (log_level_rule == NULL) { | |
981 | ERR("Failed to create log level rule object."); | |
982 | goto error; | |
983 | } | |
984 | break; | |
985 | } | |
986 | default: | |
987 | ERR("Log levels are not supported for %s event rules.", | |
988 | lttng_event_rule_type_str(event_rule_type)); | |
949f049b SM |
989 | goto error; |
990 | } | |
4624dad0 SM |
991 | } |
992 | ||
993 | /* Finally, create the event rule object. */ | |
994 | switch (event_rule_type) { | |
45ce77e1 | 995 | case LTTNG_EVENT_RULE_TYPE_USER_TRACEPOINT: |
4624dad0 SM |
996 | { |
997 | enum lttng_event_rule_status event_rule_status; | |
998 | ||
45ce77e1 | 999 | res.er = lttng_event_rule_user_tracepoint_create(); |
20a01d15 | 1000 | if (!res.er) { |
45ce77e1 | 1001 | ERR("Failed to create user_tracepoint event rule."); |
4624dad0 SM |
1002 | goto error; |
1003 | } | |
1004 | ||
1005 | /* Set pattern. */ | |
45ce77e1 | 1006 | event_rule_status = lttng_event_rule_user_tracepoint_set_name_pattern( |
50ad0862 | 1007 | res.er, name); |
4624dad0 | 1008 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
45ce77e1 | 1009 | ERR("Failed to set user_tracepoint event rule's pattern to '%s'.", |
50ad0862 | 1010 | name); |
4624dad0 SM |
1011 | goto error; |
1012 | } | |
1013 | ||
1014 | /* Set filter. */ | |
1015 | if (filter) { | |
45ce77e1 | 1016 | event_rule_status = lttng_event_rule_user_tracepoint_set_filter( |
20a01d15 | 1017 | res.er, filter); |
4624dad0 | 1018 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
45ce77e1 | 1019 | ERR("Failed to set user_tracepoint event rule's filter to '%s'.", |
4624dad0 SM |
1020 | filter); |
1021 | goto error; | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | /* Set exclusion list. */ | |
b03a81fb | 1026 | if (lttng_dynamic_pointer_array_get_count(&exclude_names) > 0) { |
4624dad0 | 1027 | int n; |
b03a81fb SM |
1028 | int count = lttng_dynamic_pointer_array_get_count( |
1029 | &exclude_names); | |
1030 | ||
1031 | for (n = 0; n < count; n++) { | |
1032 | const char *exclude_name = | |
1033 | lttng_dynamic_pointer_array_get_pointer( | |
1034 | &exclude_names, | |
1035 | n); | |
1036 | ||
1037 | event_rule_status = | |
45ce77e1 | 1038 | lttng_event_rule_user_tracepoint_add_name_pattern_exclusion( |
b03a81fb SM |
1039 | res.er, |
1040 | exclude_name); | |
4624dad0 SM |
1041 | if (event_rule_status != |
1042 | LTTNG_EVENT_RULE_STATUS_OK) { | |
45ce77e1 | 1043 | ERR("Failed to set user_tracepoint exclusion list element '%s'", |
b03a81fb | 1044 | exclude_name); |
4624dad0 SM |
1045 | goto error; |
1046 | } | |
1047 | } | |
1048 | } | |
1049 | ||
45ce77e1 JR |
1050 | if (log_level_rule) { |
1051 | event_rule_status = | |
1052 | lttng_event_rule_user_tracepoint_set_log_level_rule( | |
1053 | res.er, log_level_rule); | |
949f049b | 1054 | |
45ce77e1 JR |
1055 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1056 | ERR("Failed to set log level on event fule."); | |
4624dad0 SM |
1057 | goto error; |
1058 | } | |
45ce77e1 | 1059 | } |
4624dad0 | 1060 | |
45ce77e1 JR |
1061 | break; |
1062 | } | |
1063 | case LTTNG_EVENT_RULE_TYPE_KERNEL_TRACEPOINT: | |
1064 | { | |
1065 | enum lttng_event_rule_status event_rule_status; | |
1066 | ||
1067 | res.er = lttng_event_rule_kernel_tracepoint_create(); | |
1068 | if (!res.er) { | |
1069 | ERR("Failed to create kernel_tracepoint event rule."); | |
1070 | goto error; | |
1071 | } | |
1072 | ||
1073 | /* Set pattern. */ | |
1074 | event_rule_status = lttng_event_rule_kernel_tracepoint_set_name_pattern( | |
1075 | res.er, name); | |
1076 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1077 | ERR("Failed to set kernel_tracepoint event rule's pattern to '%s'.", | |
1078 | name); | |
1079 | goto error; | |
1080 | } | |
1081 | ||
1082 | /* Set filter. */ | |
1083 | if (filter) { | |
1084 | event_rule_status = lttng_event_rule_kernel_tracepoint_set_filter( | |
1085 | res.er, filter); | |
1086 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1087 | ERR("Failed to set kernel_tracepoint event rule's filter to '%s'.", | |
1088 | filter); | |
1089 | goto error; | |
85b05318 | 1090 | } |
45ce77e1 JR |
1091 | } |
1092 | break; | |
1093 | } | |
1094 | case LTTNG_EVENT_RULE_TYPE_JUL_LOGGING: | |
1095 | { | |
1096 | enum lttng_event_rule_status event_rule_status; | |
85b05318 | 1097 | |
45ce77e1 JR |
1098 | res.er = lttng_event_rule_jul_logging_create(); |
1099 | if (!res.er) { | |
1100 | ERR("Failed to create jul_logging event rule."); | |
1101 | goto error; | |
1102 | } | |
1103 | ||
1104 | /* Set pattern. */ | |
1105 | event_rule_status = lttng_event_rule_jul_logging_set_name_pattern( | |
1106 | res.er, name); | |
1107 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1108 | ERR("Failed to set jul_logging event rule's pattern to '%s'.", | |
1109 | name); | |
1110 | goto error; | |
1111 | } | |
1112 | ||
1113 | /* Set filter. */ | |
1114 | if (filter) { | |
1115 | event_rule_status = lttng_event_rule_jul_logging_set_filter( | |
1116 | res.er, filter); | |
1117 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1118 | ERR("Failed to set jul_logging event rule's filter to '%s'.", | |
1119 | filter); | |
85b05318 | 1120 | goto error; |
4624dad0 | 1121 | } |
45ce77e1 | 1122 | } |
4624dad0 | 1123 | |
45ce77e1 | 1124 | if (log_level_rule) { |
85b05318 | 1125 | event_rule_status = |
45ce77e1 | 1126 | lttng_event_rule_jul_logging_set_log_level_rule( |
85b05318 JR |
1127 | res.er, log_level_rule); |
1128 | ||
4624dad0 SM |
1129 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1130 | ERR("Failed to set log level on event fule."); | |
1131 | goto error; | |
1132 | } | |
1133 | } | |
45ce77e1 JR |
1134 | break; |
1135 | } | |
1136 | case LTTNG_EVENT_RULE_TYPE_LOG4J_LOGGING: | |
1137 | { | |
1138 | enum lttng_event_rule_status event_rule_status; | |
4624dad0 | 1139 | |
45ce77e1 JR |
1140 | res.er = lttng_event_rule_log4j_logging_create(); |
1141 | if (!res.er) { | |
1142 | ERR("Failed to create jul_logging event rule."); | |
1143 | goto error; | |
1144 | } | |
1145 | ||
1146 | /* Set pattern. */ | |
1147 | event_rule_status = lttng_event_rule_log4j_logging_set_name_pattern( | |
1148 | res.er, name); | |
1149 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1150 | ERR("Failed to set jul_logging event rule's pattern to '%s'.", | |
1151 | name); | |
1152 | goto error; | |
1153 | } | |
1154 | ||
1155 | /* Set filter. */ | |
1156 | if (filter) { | |
1157 | event_rule_status = lttng_event_rule_log4j_logging_set_filter( | |
1158 | res.er, filter); | |
1159 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1160 | ERR("Failed to set jul_logging event rule's filter to '%s'.", | |
1161 | filter); | |
1162 | goto error; | |
1163 | } | |
1164 | } | |
1165 | ||
1166 | if (log_level_rule) { | |
1167 | event_rule_status = | |
1168 | lttng_event_rule_log4j_logging_set_log_level_rule( | |
1169 | res.er, log_level_rule); | |
1170 | ||
1171 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1172 | ERR("Failed to set log level on event fule."); | |
1173 | goto error; | |
1174 | } | |
1175 | } | |
1176 | break; | |
1177 | } | |
1178 | case LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING: | |
1179 | { | |
1180 | enum lttng_event_rule_status event_rule_status; | |
1181 | ||
1182 | res.er = lttng_event_rule_python_logging_create(); | |
1183 | if (!res.er) { | |
1184 | ERR("Failed to create jul_logging event rule."); | |
1185 | goto error; | |
1186 | } | |
1187 | ||
1188 | /* Set pattern. */ | |
1189 | event_rule_status = lttng_event_rule_python_logging_set_name_pattern( | |
1190 | res.er, name); | |
1191 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1192 | ERR("Failed to set jul_logging event rule's pattern to '%s'.", | |
1193 | name); | |
1194 | goto error; | |
1195 | } | |
1196 | ||
1197 | /* Set filter. */ | |
1198 | if (filter) { | |
1199 | event_rule_status = lttng_event_rule_python_logging_set_filter( | |
1200 | res.er, filter); | |
1201 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1202 | ERR("Failed to set jul_logging event rule's filter to '%s'.", | |
1203 | filter); | |
1204 | goto error; | |
1205 | } | |
1206 | } | |
1207 | ||
1208 | if (log_level_rule) { | |
1209 | event_rule_status = | |
1210 | lttng_event_rule_python_logging_set_log_level_rule( | |
1211 | res.er, log_level_rule); | |
1212 | ||
1213 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { | |
1214 | ERR("Failed to set log level on event fule."); | |
1215 | goto error; | |
1216 | } | |
1217 | } | |
4624dad0 SM |
1218 | break; |
1219 | } | |
d84633c4 | 1220 | case LTTNG_EVENT_RULE_TYPE_KERNEL_KPROBE: |
4624dad0 SM |
1221 | { |
1222 | int ret; | |
1223 | enum lttng_event_rule_status event_rule_status; | |
1224 | ||
50ad0862 | 1225 | ret = parse_kernel_probe_opts( |
24de704e | 1226 | location, &kernel_probe_location); |
4624dad0 SM |
1227 | if (ret) { |
1228 | ERR("Failed to parse kernel probe location."); | |
1229 | goto error; | |
1230 | } | |
1231 | ||
602a6d40 | 1232 | assert(kernel_probe_location); |
d84633c4 | 1233 | res.er = lttng_event_rule_kernel_kprobe_create(kernel_probe_location); |
602a6d40 JR |
1234 | if (!res.er) { |
1235 | ERR("Failed to create kprobe event rule."); | |
4624dad0 SM |
1236 | goto error; |
1237 | } | |
1238 | ||
50ad0862 | 1239 | event_rule_status = |
d84633c4 | 1240 | lttng_event_rule_kernel_kprobe_set_event_name( |
24de704e | 1241 | res.er, event_name); |
4624dad0 | 1242 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
50ad0862 | 1243 | ERR("Failed to set kprobe event rule's name to '%s'.", |
24de704e | 1244 | event_name); |
4624dad0 SM |
1245 | goto error; |
1246 | } | |
1247 | ||
1248 | break; | |
1249 | } | |
e60e9a9a | 1250 | case LTTNG_EVENT_RULE_TYPE_KERNEL_UPROBE: |
4624dad0 SM |
1251 | { |
1252 | int ret; | |
1253 | enum lttng_event_rule_status event_rule_status; | |
1254 | ||
1255 | ret = parse_userspace_probe_opts( | |
24de704e | 1256 | location, &userspace_probe_location); |
4624dad0 SM |
1257 | if (ret) { |
1258 | ERR("Failed to parse user space probe location."); | |
1259 | goto error; | |
1260 | } | |
1261 | ||
e60e9a9a | 1262 | res.er = lttng_event_rule_kernel_uprobe_create(userspace_probe_location); |
20a01d15 SM |
1263 | if (!res.er) { |
1264 | ERR("Failed to create userspace probe event rule."); | |
4624dad0 SM |
1265 | goto error; |
1266 | } | |
1267 | ||
50ad0862 | 1268 | event_rule_status = |
e60e9a9a | 1269 | lttng_event_rule_kernel_uprobe_set_event_name( |
24de704e | 1270 | res.er, event_name); |
4624dad0 SM |
1271 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1272 | ERR("Failed to set user space probe event rule's name to '%s'.", | |
24de704e | 1273 | event_name); |
4624dad0 SM |
1274 | goto error; |
1275 | } | |
1276 | ||
1277 | break; | |
1278 | } | |
213efb0c | 1279 | case LTTNG_EVENT_RULE_TYPE_KERNEL_SYSCALL: |
4624dad0 SM |
1280 | { |
1281 | enum lttng_event_rule_status event_rule_status; | |
213efb0c | 1282 | enum lttng_event_rule_kernel_syscall_emission_site emission_site; |
57739a6b JR |
1283 | |
1284 | if (!parse_syscall_emission_site_from_type( | |
bc16a30d | 1285 | event_rule_type_str, &emission_site)) { |
57739a6b JR |
1286 | ERR("Failed to parse syscall type '%s'.", event_rule_type_str); |
1287 | goto error; | |
1288 | } | |
4624dad0 | 1289 | |
213efb0c | 1290 | res.er = lttng_event_rule_kernel_syscall_create(emission_site); |
20a01d15 | 1291 | if (!res.er) { |
4624dad0 SM |
1292 | ERR("Failed to create syscall event rule."); |
1293 | goto error; | |
1294 | } | |
1295 | ||
213efb0c | 1296 | event_rule_status = lttng_event_rule_kernel_syscall_set_name_pattern( |
50ad0862 | 1297 | res.er, name); |
4624dad0 SM |
1298 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1299 | ERR("Failed to set syscall event rule's pattern to '%s'.", | |
50ad0862 | 1300 | name); |
4624dad0 SM |
1301 | goto error; |
1302 | } | |
1303 | ||
1304 | if (filter) { | |
213efb0c | 1305 | event_rule_status = lttng_event_rule_kernel_syscall_set_filter( |
20a01d15 | 1306 | res.er, filter); |
4624dad0 SM |
1307 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
1308 | ERR("Failed to set syscall event rule's filter to '%s'.", | |
1309 | filter); | |
1310 | goto error; | |
1311 | } | |
1312 | } | |
1313 | ||
1314 | break; | |
1315 | } | |
1316 | default: | |
1317 | abort(); | |
1318 | goto error; | |
1319 | } | |
1320 | ||
1321 | goto end; | |
1322 | ||
1323 | error: | |
20a01d15 SM |
1324 | lttng_event_rule_destroy(res.er); |
1325 | res.er = NULL; | |
1326 | lttng_dynamic_pointer_array_reset(&res.capture_descriptors); | |
4624dad0 SM |
1327 | |
1328 | end: | |
20a01d15 SM |
1329 | if (parser_ctx) { |
1330 | filter_parser_ctx_free(parser_ctx); | |
1331 | } | |
1332 | ||
1333 | lttng_event_expr_destroy(event_expr); | |
ea76a8bb SM |
1334 | argpar_item_destroy(argpar_item); |
1335 | argpar_iter_destroy(argpar_iter); | |
4624dad0 | 1336 | free(filter); |
50ad0862 | 1337 | free(name); |
b03a81fb | 1338 | lttng_dynamic_pointer_array_reset(&exclude_names); |
949f049b | 1339 | free(log_level_str); |
24de704e SM |
1340 | free(location); |
1341 | free(event_name); | |
57739a6b | 1342 | free(event_rule_type_str); |
50ad0862 | 1343 | |
4624dad0 SM |
1344 | lttng_kernel_probe_location_destroy(kernel_probe_location); |
1345 | lttng_userspace_probe_location_destroy(userspace_probe_location); | |
85b05318 | 1346 | lttng_log_level_rule_destroy(log_level_rule); |
20a01d15 | 1347 | return res; |
4624dad0 SM |
1348 | } |
1349 | ||
1350 | static | |
5f5ce3e6 SM |
1351 | struct lttng_condition *handle_condition_event(int *argc, const char ***argv, |
1352 | int argc_offset) | |
4624dad0 | 1353 | { |
20a01d15 | 1354 | struct parse_event_rule_res res; |
4624dad0 | 1355 | struct lttng_condition *c; |
20a01d15 | 1356 | size_t i; |
4624dad0 | 1357 | |
5f5ce3e6 | 1358 | res = parse_event_rule(argc, argv, argc_offset); |
20a01d15 | 1359 | if (!res.er) { |
4624dad0 | 1360 | c = NULL; |
20a01d15 | 1361 | goto error; |
4624dad0 SM |
1362 | } |
1363 | ||
8dbb86b8 | 1364 | c = lttng_condition_event_rule_matches_create(res.er); |
20a01d15 SM |
1365 | lttng_event_rule_destroy(res.er); |
1366 | res.er = NULL; | |
4624dad0 | 1367 | if (!c) { |
20a01d15 SM |
1368 | goto error; |
1369 | } | |
1370 | ||
1371 | for (i = 0; i < lttng_dynamic_pointer_array_get_count(&res.capture_descriptors); | |
1372 | i++) { | |
1373 | enum lttng_condition_status status; | |
1374 | struct lttng_event_expr **expr = | |
1375 | lttng_dynamic_array_get_element( | |
1376 | &res.capture_descriptors.array, i); | |
1377 | ||
1378 | assert(expr); | |
1379 | assert(*expr); | |
8dbb86b8 | 1380 | status = lttng_condition_event_rule_matches_append_capture_descriptor( |
20a01d15 SM |
1381 | c, *expr); |
1382 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
81d566c9 JR |
1383 | if (status == LTTNG_CONDITION_STATUS_UNSUPPORTED) { |
1384 | ERR("The capture feature is unsupported by the event-rule condition type"); | |
1385 | } | |
1386 | ||
20a01d15 SM |
1387 | goto error; |
1388 | } | |
1389 | ||
1390 | /* Ownership of event expression moved to `c` */ | |
1391 | *expr = NULL; | |
4624dad0 SM |
1392 | } |
1393 | ||
20a01d15 SM |
1394 | goto end; |
1395 | ||
1396 | error: | |
1397 | lttng_condition_destroy(c); | |
1398 | c = NULL; | |
1399 | ||
4624dad0 | 1400 | end: |
20a01d15 SM |
1401 | lttng_dynamic_pointer_array_reset(&res.capture_descriptors); |
1402 | lttng_event_rule_destroy(res.er); | |
4624dad0 SM |
1403 | return c; |
1404 | } | |
1405 | ||
4624dad0 SM |
1406 | struct condition_descr { |
1407 | const char *name; | |
5f5ce3e6 SM |
1408 | struct lttng_condition *(*handler) (int *argc, const char ***argv, |
1409 | int argc_offset); | |
4624dad0 SM |
1410 | }; |
1411 | ||
1412 | static const | |
1413 | struct condition_descr condition_descrs[] = { | |
665db063 | 1414 | { "event-rule-matches", handle_condition_event }, |
4624dad0 SM |
1415 | }; |
1416 | ||
1417 | static | |
29bcf415 | 1418 | struct lttng_condition *parse_condition(const char *condition_name, int *argc, |
5f5ce3e6 | 1419 | const char ***argv, int argc_offset) |
4624dad0 SM |
1420 | { |
1421 | int i; | |
1422 | struct lttng_condition *cond; | |
4624dad0 SM |
1423 | const struct condition_descr *descr = NULL; |
1424 | ||
4624dad0 SM |
1425 | for (i = 0; i < ARRAY_SIZE(condition_descrs); i++) { |
1426 | if (strcmp(condition_name, condition_descrs[i].name) == 0) { | |
1427 | descr = &condition_descrs[i]; | |
1428 | break; | |
1429 | } | |
1430 | } | |
1431 | ||
1432 | if (!descr) { | |
1433 | ERR("Unknown condition name '%s'", condition_name); | |
1434 | goto error; | |
1435 | } | |
1436 | ||
5f5ce3e6 | 1437 | cond = descr->handler(argc, argv, argc_offset); |
4624dad0 SM |
1438 | if (!cond) { |
1439 | /* The handler has already printed an error message. */ | |
1440 | goto error; | |
1441 | } | |
1442 | ||
1443 | goto end; | |
1444 | error: | |
1445 | cond = NULL; | |
1446 | end: | |
1447 | return cond; | |
1448 | } | |
bbadb5e0 JR |
1449 | |
1450 | static struct lttng_rate_policy *parse_rate_policy(const char *policy_str) | |
1451 | { | |
f78de773 JG |
1452 | int ret; |
1453 | size_t num_token = 0; | |
1454 | struct lttng_dynamic_pointer_array tokens; | |
bbadb5e0 JR |
1455 | struct lttng_rate_policy *policy = NULL; |
1456 | enum lttng_rate_policy_type policy_type; | |
1457 | unsigned long long value; | |
1458 | char *policy_type_str; | |
1459 | char *policy_value_str; | |
1460 | ||
1461 | assert(policy_str); | |
f78de773 | 1462 | lttng_dynamic_pointer_array_init(&tokens, NULL); |
bbadb5e0 | 1463 | |
f78de773 JG |
1464 | /* Rate policy fields are separated by ':'. */ |
1465 | ret = strutils_split(policy_str, ':', 1, &tokens); | |
1466 | if (ret == 0) { | |
1467 | num_token = lttng_dynamic_pointer_array_get_count(&tokens); | |
1468 | } | |
bbadb5e0 JR |
1469 | |
1470 | /* | |
1471 | * Early sanity check that the number of parameter is exactly 2. | |
1472 | * i.e : type:value | |
1473 | */ | |
1474 | if (num_token != 2) { | |
1475 | ERR("Rate policy format is invalid."); | |
1476 | goto end; | |
1477 | } | |
1478 | ||
f78de773 JG |
1479 | policy_type_str = lttng_dynamic_pointer_array_get_pointer(&tokens, 0); |
1480 | policy_value_str = lttng_dynamic_pointer_array_get_pointer(&tokens, 1); | |
bbadb5e0 JR |
1481 | |
1482 | /* Parse the type. */ | |
1483 | if (strcmp(policy_type_str, "once-after") == 0) { | |
1484 | policy_type = LTTNG_RATE_POLICY_TYPE_ONCE_AFTER_N; | |
1485 | } else if (strcmp(policy_type_str, "every") == 0) { | |
1486 | policy_type = LTTNG_RATE_POLICY_TYPE_EVERY_N; | |
1487 | } else { | |
1488 | ERR("Rate policy type `%s` unknown.", policy_type_str); | |
1489 | goto end; | |
1490 | } | |
1491 | ||
1492 | /* Parse the value. */ | |
1493 | if (utils_parse_unsigned_long_long(policy_value_str, &value) != 0) { | |
1494 | ERR("Failed to parse rate policy value `%s` as an integer.", | |
1495 | policy_value_str); | |
1496 | goto end; | |
1497 | } | |
1498 | ||
1499 | if (value == 0) { | |
1500 | ERR("Rate policy value `%s` must be > 0.", policy_value_str); | |
1501 | goto end; | |
1502 | } | |
1503 | ||
1504 | switch (policy_type) { | |
1505 | case LTTNG_RATE_POLICY_TYPE_EVERY_N: | |
1506 | policy = lttng_rate_policy_every_n_create(value); | |
1507 | break; | |
1508 | case LTTNG_RATE_POLICY_TYPE_ONCE_AFTER_N: | |
1509 | policy = lttng_rate_policy_once_after_n_create(value); | |
1510 | break; | |
1511 | default: | |
1512 | abort(); | |
1513 | } | |
1514 | ||
1515 | if (policy == NULL) { | |
1516 | ERR("Failed to create rate policy `%s`.", policy_str); | |
1517 | } | |
1518 | ||
1519 | end: | |
f78de773 | 1520 | lttng_dynamic_pointer_array_reset(&tokens); |
bbadb5e0 JR |
1521 | return policy; |
1522 | } | |
1523 | ||
e45dd625 | 1524 | static const struct argpar_opt_descr notify_action_opt_descrs[] = { |
bbadb5e0 | 1525 | { OPT_RATE_POLICY, '\0', "rate-policy", true }, |
e45dd625 JR |
1526 | ARGPAR_OPT_DESCR_SENTINEL |
1527 | }; | |
4624dad0 | 1528 | |
4624dad0 | 1529 | static |
5f5ce3e6 SM |
1530 | struct lttng_action *handle_action_notify(int *argc, const char ***argv, |
1531 | int argc_offset) | |
4624dad0 | 1532 | { |
e45dd625 | 1533 | struct lttng_action *action = NULL; |
ea76a8bb SM |
1534 | struct argpar_iter *argpar_iter = NULL; |
1535 | const struct argpar_item *argpar_item = NULL; | |
7f4d5b07 | 1536 | struct lttng_rate_policy *policy = NULL; |
4624dad0 | 1537 | |
ea76a8bb SM |
1538 | argpar_iter = argpar_iter_create(*argc, *argv, notify_action_opt_descrs); |
1539 | if (!argpar_iter) { | |
1540 | ERR("Failed to allocate an argpar iter."); | |
e45dd625 JR |
1541 | goto error; |
1542 | } | |
1543 | ||
1544 | while (true) { | |
ea76a8bb | 1545 | enum parse_next_item_status status; |
e45dd625 | 1546 | |
5f5ce3e6 SM |
1547 | status = parse_next_item(argpar_iter, &argpar_item, |
1548 | argc_offset, *argv, false, | |
1549 | "While parsing `notify` action:"); | |
ea76a8bb | 1550 | if (status == PARSE_NEXT_ITEM_STATUS_ERROR) { |
e45dd625 | 1551 | goto error; |
ea76a8bb | 1552 | } else if (status == PARSE_NEXT_ITEM_STATUS_END) { |
e45dd625 JR |
1553 | break; |
1554 | } | |
1555 | ||
ea76a8bb | 1556 | assert(status == PARSE_NEXT_ITEM_STATUS_OK); |
e45dd625 | 1557 | |
ea76a8bb SM |
1558 | if (argpar_item_type(argpar_item) == ARGPAR_ITEM_TYPE_OPT) { |
1559 | const struct argpar_opt_descr *descr = | |
1560 | argpar_item_opt_descr(argpar_item); | |
1561 | const char *arg = argpar_item_opt_arg(argpar_item); | |
e45dd625 | 1562 | |
ea76a8bb | 1563 | switch (descr->id) { |
bbadb5e0 | 1564 | case OPT_RATE_POLICY: |
e45dd625 | 1565 | { |
ea76a8bb | 1566 | policy = parse_rate_policy(arg); |
bbadb5e0 | 1567 | if (!policy) { |
e45dd625 JR |
1568 | goto error; |
1569 | } | |
e45dd625 JR |
1570 | break; |
1571 | } | |
e45dd625 JR |
1572 | default: |
1573 | abort(); | |
1574 | } | |
1575 | } else { | |
ea76a8bb | 1576 | const char *arg = argpar_item_non_opt_arg(argpar_item); |
e45dd625 | 1577 | |
ea76a8bb SM |
1578 | ERR("Unexpected argument `%s`.", arg); |
1579 | goto error; | |
e45dd625 JR |
1580 | } |
1581 | } | |
1582 | ||
ea76a8bb SM |
1583 | *argc -= argpar_iter_ingested_orig_args(argpar_iter); |
1584 | *argv += argpar_iter_ingested_orig_args(argpar_iter); | |
e45dd625 | 1585 | |
e45dd625 JR |
1586 | action = lttng_action_notify_create(); |
1587 | if (!action) { | |
1588 | ERR("Failed to create notify action"); | |
1589 | goto error; | |
1590 | } | |
1591 | ||
1592 | if (policy) { | |
1593 | enum lttng_action_status status; | |
7f4d5b07 | 1594 | status = lttng_action_notify_set_rate_policy(action, policy); |
e45dd625 | 1595 | if (status != LTTNG_ACTION_STATUS_OK) { |
7f4d5b07 | 1596 | ERR("Failed to set rate policy"); |
e45dd625 JR |
1597 | goto error; |
1598 | } | |
1599 | } | |
1600 | ||
1601 | goto end; | |
1602 | ||
1603 | error: | |
1604 | lttng_action_destroy(action); | |
1605 | action = NULL; | |
e45dd625 | 1606 | end: |
7f4d5b07 | 1607 | lttng_rate_policy_destroy(policy); |
ea76a8bb SM |
1608 | argpar_item_destroy(argpar_item); |
1609 | argpar_iter_destroy(argpar_iter); | |
e45dd625 JR |
1610 | return action; |
1611 | } | |
4624dad0 SM |
1612 | |
1613 | /* | |
e45dd625 | 1614 | * Generic handler for a kind of action that takes a session name and an |
7f4d5b07 | 1615 | * optional rate policy. |
4624dad0 SM |
1616 | */ |
1617 | ||
e45dd625 JR |
1618 | static struct lttng_action *handle_action_simple_session_with_policy(int *argc, |
1619 | const char ***argv, | |
5f5ce3e6 | 1620 | int argc_offset, |
4624dad0 | 1621 | struct lttng_action *(*create_action_cb)(void), |
e45dd625 JR |
1622 | enum lttng_action_status (*set_session_name_cb)( |
1623 | struct lttng_action *, const char *), | |
7f4d5b07 | 1624 | enum lttng_action_status (*set_rate_policy_cb)( |
e45dd625 | 1625 | struct lttng_action *, |
7f4d5b07 | 1626 | const struct lttng_rate_policy *), |
4624dad0 SM |
1627 | const char *action_name) |
1628 | { | |
1629 | struct lttng_action *action = NULL; | |
ea76a8bb SM |
1630 | struct argpar_iter *argpar_iter = NULL; |
1631 | const struct argpar_item *argpar_item = NULL; | |
4624dad0 | 1632 | const char *session_name_arg = NULL; |
4624dad0 | 1633 | enum lttng_action_status action_status; |
7f4d5b07 | 1634 | struct lttng_rate_policy *policy = NULL; |
e45dd625 JR |
1635 | |
1636 | assert(set_session_name_cb); | |
7f4d5b07 | 1637 | assert(set_rate_policy_cb); |
e45dd625 | 1638 | |
7f4d5b07 | 1639 | const struct argpar_opt_descr rate_policy_opt_descrs[] = { |
bbadb5e0 | 1640 | { OPT_RATE_POLICY, '\0', "rate-policy", true }, |
e45dd625 JR |
1641 | ARGPAR_OPT_DESCR_SENTINEL |
1642 | }; | |
b03a81fb | 1643 | |
ea76a8bb SM |
1644 | argpar_iter = argpar_iter_create(*argc, *argv, rate_policy_opt_descrs); |
1645 | if (!argpar_iter) { | |
1646 | ERR("Failed to allocate an argpar iter."); | |
4624dad0 SM |
1647 | goto error; |
1648 | } | |
1649 | ||
1650 | while (true) { | |
ea76a8bb | 1651 | enum parse_next_item_status status; |
4624dad0 | 1652 | |
5f5ce3e6 SM |
1653 | status = parse_next_item(argpar_iter, &argpar_item, argc_offset, |
1654 | *argv, false, | |
1655 | "While parsing `%s` action:", action_name); | |
ea76a8bb | 1656 | if (status == PARSE_NEXT_ITEM_STATUS_ERROR) { |
4624dad0 | 1657 | goto error; |
ea76a8bb | 1658 | } else if (status == PARSE_NEXT_ITEM_STATUS_END) { |
4624dad0 SM |
1659 | break; |
1660 | } | |
1661 | ||
ea76a8bb SM |
1662 | assert(status == PARSE_NEXT_ITEM_STATUS_OK); |
1663 | ||
1664 | if (argpar_item_type(argpar_item) == ARGPAR_ITEM_TYPE_OPT) { | |
1665 | const struct argpar_opt_descr *descr = | |
1666 | argpar_item_opt_descr(argpar_item); | |
1667 | const char *arg = argpar_item_opt_arg(argpar_item); | |
4624dad0 | 1668 | |
ea76a8bb | 1669 | switch (descr->id) { |
bbadb5e0 | 1670 | case OPT_RATE_POLICY: |
e45dd625 | 1671 | { |
ea76a8bb | 1672 | policy = parse_rate_policy(arg); |
bbadb5e0 | 1673 | if (!policy) { |
e45dd625 JR |
1674 | goto error; |
1675 | } | |
e45dd625 JR |
1676 | break; |
1677 | } | |
e45dd625 JR |
1678 | default: |
1679 | abort(); | |
1680 | } | |
1681 | } else { | |
ea76a8bb SM |
1682 | const char *arg = argpar_item_non_opt_arg(argpar_item); |
1683 | unsigned int idx = argpar_item_non_opt_non_opt_index(argpar_item); | |
e45dd625 | 1684 | |
ea76a8bb | 1685 | switch (idx) { |
e45dd625 | 1686 | case 0: |
ea76a8bb | 1687 | session_name_arg = arg; |
e45dd625 JR |
1688 | break; |
1689 | default: | |
ea76a8bb | 1690 | ERR("Unexpected argument `%s`.", arg); |
e45dd625 JR |
1691 | goto error; |
1692 | } | |
4624dad0 SM |
1693 | } |
1694 | } | |
1695 | ||
ea76a8bb SM |
1696 | *argc -= argpar_iter_ingested_orig_args(argpar_iter); |
1697 | *argv += argpar_iter_ingested_orig_args(argpar_iter); | |
4624dad0 SM |
1698 | |
1699 | if (!session_name_arg) { | |
1700 | ERR("Missing session name."); | |
1701 | goto error; | |
1702 | } | |
1703 | ||
1704 | action = create_action_cb(); | |
1705 | if (!action) { | |
1706 | ERR("Failed to allocate %s session action.", action_name); | |
1707 | goto error; | |
1708 | } | |
1709 | ||
1710 | action_status = set_session_name_cb(action, session_name_arg); | |
1711 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1712 | ERR("Failed to set action %s session's session name to '%s'.", | |
1713 | action_name, session_name_arg); | |
1714 | goto error; | |
1715 | } | |
1716 | ||
e45dd625 | 1717 | if (policy) { |
7f4d5b07 | 1718 | action_status = set_rate_policy_cb(action, policy); |
e45dd625 | 1719 | if (action_status != LTTNG_ACTION_STATUS_OK) { |
7f4d5b07 | 1720 | ERR("Failed to set rate policy"); |
e45dd625 JR |
1721 | goto error; |
1722 | } | |
1723 | } | |
1724 | ||
4624dad0 SM |
1725 | goto end; |
1726 | ||
1727 | error: | |
1728 | lttng_action_destroy(action); | |
1729 | action = NULL; | |
ea76a8bb | 1730 | |
4624dad0 | 1731 | end: |
7f4d5b07 | 1732 | lttng_rate_policy_destroy(policy); |
ea76a8bb SM |
1733 | argpar_item_destroy(argpar_item); |
1734 | argpar_iter_destroy(argpar_iter); | |
4624dad0 SM |
1735 | return action; |
1736 | } | |
1737 | ||
1738 | static | |
1739 | struct lttng_action *handle_action_start_session(int *argc, | |
5f5ce3e6 | 1740 | const char ***argv, int argc_offset) |
4624dad0 | 1741 | { |
e45dd625 | 1742 | return handle_action_simple_session_with_policy(argc, argv, |
5f5ce3e6 | 1743 | argc_offset, |
e45dd625 JR |
1744 | lttng_action_start_session_create, |
1745 | lttng_action_start_session_set_session_name, | |
7f4d5b07 | 1746 | lttng_action_start_session_set_rate_policy, "start"); |
4624dad0 SM |
1747 | } |
1748 | ||
1749 | static | |
1750 | struct lttng_action *handle_action_stop_session(int *argc, | |
5f5ce3e6 | 1751 | const char ***argv, int argc_offset) |
4624dad0 | 1752 | { |
e45dd625 | 1753 | return handle_action_simple_session_with_policy(argc, argv, |
5f5ce3e6 | 1754 | argc_offset, |
e45dd625 JR |
1755 | lttng_action_stop_session_create, |
1756 | lttng_action_stop_session_set_session_name, | |
7f4d5b07 | 1757 | lttng_action_stop_session_set_rate_policy, "stop"); |
4624dad0 SM |
1758 | } |
1759 | ||
1760 | static | |
1761 | struct lttng_action *handle_action_rotate_session(int *argc, | |
5f5ce3e6 | 1762 | const char ***argv, int argc_offset) |
4624dad0 | 1763 | { |
e45dd625 | 1764 | return handle_action_simple_session_with_policy(argc, argv, |
5f5ce3e6 | 1765 | argc_offset, |
4624dad0 SM |
1766 | lttng_action_rotate_session_create, |
1767 | lttng_action_rotate_session_set_session_name, | |
7f4d5b07 | 1768 | lttng_action_rotate_session_set_rate_policy, |
4624dad0 SM |
1769 | "rotate"); |
1770 | } | |
1771 | ||
1772 | static const struct argpar_opt_descr snapshot_action_opt_descrs[] = { | |
1773 | { OPT_NAME, 'n', "name", true }, | |
1774 | { OPT_MAX_SIZE, 'm', "max-size", true }, | |
1775 | { OPT_CTRL_URL, '\0', "ctrl-url", true }, | |
1776 | { OPT_DATA_URL, '\0', "data-url", true }, | |
1777 | { OPT_URL, '\0', "url", true }, | |
1778 | { OPT_PATH, '\0', "path", true }, | |
bbadb5e0 | 1779 | { OPT_RATE_POLICY, '\0', "rate-policy", true }, |
4624dad0 SM |
1780 | ARGPAR_OPT_DESCR_SENTINEL |
1781 | }; | |
1782 | ||
1783 | static | |
1784 | struct lttng_action *handle_action_snapshot_session(int *argc, | |
5f5ce3e6 | 1785 | const char ***argv, int argc_offset) |
4624dad0 SM |
1786 | { |
1787 | struct lttng_action *action = NULL; | |
ea76a8bb SM |
1788 | struct argpar_iter *argpar_iter = NULL; |
1789 | const struct argpar_item *argpar_item = NULL; | |
4624dad0 SM |
1790 | const char *session_name_arg = NULL; |
1791 | char *snapshot_name_arg = NULL; | |
1792 | char *ctrl_url_arg = NULL; | |
1793 | char *data_url_arg = NULL; | |
1794 | char *max_size_arg = NULL; | |
1795 | char *url_arg = NULL; | |
1796 | char *path_arg = NULL; | |
1797 | char *error = NULL; | |
1798 | enum lttng_action_status action_status; | |
1799 | struct lttng_snapshot_output *snapshot_output = NULL; | |
7f4d5b07 | 1800 | struct lttng_rate_policy *policy = NULL; |
4624dad0 SM |
1801 | int ret; |
1802 | unsigned int locations_specified = 0; | |
1803 | ||
ea76a8bb SM |
1804 | argpar_iter = argpar_iter_create(*argc, *argv, snapshot_action_opt_descrs); |
1805 | if (!argpar_iter) { | |
1806 | ERR("Failed to allocate an argpar iter."); | |
4624dad0 SM |
1807 | goto error; |
1808 | } | |
1809 | ||
1810 | while (true) { | |
ea76a8bb | 1811 | enum parse_next_item_status status; |
4624dad0 | 1812 | |
5f5ce3e6 SM |
1813 | status = parse_next_item(argpar_iter, &argpar_item, argc_offset, |
1814 | *argv, false, "While parsing `snapshot` action:"); | |
ea76a8bb | 1815 | if (status == PARSE_NEXT_ITEM_STATUS_ERROR) { |
4624dad0 | 1816 | goto error; |
ea76a8bb | 1817 | } else if (status == PARSE_NEXT_ITEM_STATUS_END) { |
4624dad0 SM |
1818 | break; |
1819 | } | |
1820 | ||
ea76a8bb | 1821 | assert(status == PARSE_NEXT_ITEM_STATUS_OK); |
4624dad0 | 1822 | |
ea76a8bb SM |
1823 | if (argpar_item_type(argpar_item) == ARGPAR_ITEM_TYPE_OPT) { |
1824 | const struct argpar_opt_descr *descr = | |
1825 | argpar_item_opt_descr(argpar_item); | |
1826 | const char *arg = argpar_item_opt_arg(argpar_item); | |
4624dad0 | 1827 | |
ea76a8bb | 1828 | switch (descr->id) { |
4624dad0 | 1829 | case OPT_NAME: |
ea76a8bb | 1830 | if (!assign_string(&snapshot_name_arg, arg, "--name/-n")) { |
4624dad0 SM |
1831 | goto error; |
1832 | } | |
1833 | ||
1834 | break; | |
1835 | case OPT_MAX_SIZE: | |
ea76a8bb | 1836 | if (!assign_string(&max_size_arg, arg, "--max-size/-m")) { |
4624dad0 SM |
1837 | goto error; |
1838 | } | |
1839 | ||
1840 | break; | |
1841 | case OPT_CTRL_URL: | |
ea76a8bb | 1842 | if (!assign_string(&ctrl_url_arg, arg, "--ctrl-url")) { |
4624dad0 SM |
1843 | goto error; |
1844 | } | |
1845 | ||
1846 | break; | |
1847 | case OPT_DATA_URL: | |
ea76a8bb | 1848 | if (!assign_string(&data_url_arg, arg, "--data-url")) { |
4624dad0 SM |
1849 | goto error; |
1850 | } | |
1851 | ||
1852 | break; | |
1853 | case OPT_URL: | |
ea76a8bb | 1854 | if (!assign_string(&url_arg, arg, "--url")) { |
4624dad0 SM |
1855 | goto error; |
1856 | } | |
1857 | ||
1858 | break; | |
1859 | case OPT_PATH: | |
ea76a8bb | 1860 | if (!assign_string(&path_arg, arg, "--path")) { |
4624dad0 SM |
1861 | goto error; |
1862 | } | |
1863 | ||
1864 | break; | |
bbadb5e0 | 1865 | case OPT_RATE_POLICY: |
e45dd625 | 1866 | { |
ea76a8bb | 1867 | policy = parse_rate_policy(arg); |
bbadb5e0 | 1868 | if (!policy) { |
e45dd625 JR |
1869 | goto error; |
1870 | } | |
e45dd625 JR |
1871 | break; |
1872 | } | |
4624dad0 SM |
1873 | default: |
1874 | abort(); | |
1875 | } | |
1876 | } else { | |
ea76a8bb SM |
1877 | const char *arg = argpar_item_non_opt_arg(argpar_item); |
1878 | unsigned int idx = argpar_item_non_opt_non_opt_index(argpar_item); | |
4624dad0 | 1879 | |
ea76a8bb | 1880 | switch (idx) { |
4624dad0 | 1881 | case 0: |
ea76a8bb | 1882 | session_name_arg = arg; |
4624dad0 SM |
1883 | break; |
1884 | default: | |
ea76a8bb | 1885 | ERR("Unexpected argument `%s`.", arg); |
4624dad0 SM |
1886 | goto error; |
1887 | } | |
1888 | } | |
1889 | } | |
1890 | ||
ea76a8bb SM |
1891 | *argc -= argpar_iter_ingested_orig_args(argpar_iter); |
1892 | *argv += argpar_iter_ingested_orig_args(argpar_iter); | |
4624dad0 SM |
1893 | |
1894 | if (!session_name_arg) { | |
1895 | ERR("Missing session name."); | |
1896 | goto error; | |
1897 | } | |
1898 | ||
1899 | /* --ctrl-url and --data-url must come in pair. */ | |
1900 | if (ctrl_url_arg && !data_url_arg) { | |
1901 | ERR("--ctrl-url is specified, but --data-url is missing."); | |
1902 | goto error; | |
1903 | } | |
1904 | ||
1905 | if (!ctrl_url_arg && data_url_arg) { | |
1906 | ERR("--data-url is specified, but --ctrl-url is missing."); | |
1907 | goto error; | |
1908 | } | |
1909 | ||
1910 | locations_specified += !!(ctrl_url_arg || data_url_arg); | |
1911 | locations_specified += !!url_arg; | |
1912 | locations_specified += !!path_arg; | |
1913 | ||
1914 | /* --ctrl-url/--data-url, --url and --path are mutually exclusive. */ | |
1915 | if (locations_specified > 1) { | |
1916 | ERR("The --ctrl-url/--data-url, --url, and --path options can't be used together."); | |
1917 | goto error; | |
1918 | } | |
1919 | ||
1920 | /* | |
1921 | * Did the user specify an option that implies using a | |
1922 | * custom/unregistered output? | |
1923 | */ | |
1924 | if (url_arg || ctrl_url_arg || path_arg) { | |
1925 | snapshot_output = lttng_snapshot_output_create(); | |
1926 | if (!snapshot_output) { | |
1927 | ERR("Failed to allocate a snapshot output."); | |
1928 | goto error; | |
1929 | } | |
1930 | } | |
1931 | ||
1932 | action = lttng_action_snapshot_session_create(); | |
1933 | if (!action) { | |
1934 | ERR("Failed to allocate snapshot session action."); | |
1935 | goto error; | |
1936 | } | |
1937 | ||
1938 | action_status = lttng_action_snapshot_session_set_session_name( | |
1939 | action, session_name_arg); | |
1940 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
1941 | ERR("Failed to set action snapshot session's session name to '%s'.", | |
1942 | session_name_arg); | |
1943 | goto error; | |
1944 | } | |
1945 | ||
1946 | if (snapshot_name_arg) { | |
1947 | if (!snapshot_output) { | |
1948 | ERR("Can't provide a snapshot output name without a snapshot output destination."); | |
1949 | goto error; | |
1950 | } | |
1951 | ||
1952 | ret = lttng_snapshot_output_set_name( | |
1953 | snapshot_name_arg, snapshot_output); | |
1954 | if (ret != 0) { | |
1955 | ERR("Failed to set name of snapshot output."); | |
1956 | goto error; | |
1957 | } | |
1958 | } | |
1959 | ||
1960 | if (max_size_arg) { | |
1961 | uint64_t max_size; | |
1962 | ||
1963 | if (!snapshot_output) { | |
1964 | ERR("Can't provide a snapshot output max size without a snapshot output destination."); | |
1965 | goto error; | |
1966 | } | |
1967 | ||
1968 | ret = utils_parse_size_suffix(max_size_arg, &max_size); | |
1969 | if (ret != 0) { | |
1970 | ERR("Failed to parse `%s` as a size.", max_size_arg); | |
1971 | goto error; | |
1972 | } | |
1973 | ||
1974 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); | |
1975 | if (ret != 0) { | |
1976 | ERR("Failed to set snapshot output's max size to %" PRIu64 " bytes.", | |
1977 | max_size); | |
1978 | goto error; | |
1979 | } | |
1980 | } | |
1981 | ||
1982 | if (url_arg) { | |
1983 | int num_uris; | |
1984 | struct lttng_uri *uris; | |
1985 | ||
1986 | if (!strstr(url_arg, "://")) { | |
1987 | ERR("Failed to parse '%s' as an URL.", url_arg); | |
1988 | goto error; | |
1989 | } | |
1990 | ||
1991 | num_uris = uri_parse_str_urls(url_arg, NULL, &uris); | |
1992 | if (num_uris < 1) { | |
1993 | ERR("Failed to parse '%s' as an URL.", url_arg); | |
1994 | goto error; | |
1995 | } | |
1996 | ||
1997 | if (uris[0].dtype == LTTNG_DST_PATH) { | |
1998 | ret = lttng_snapshot_output_set_local_path( | |
1999 | uris[0].dst.path, snapshot_output); | |
2000 | free(uris); | |
2001 | if (ret != 0) { | |
2002 | ERR("Failed to assign '%s' as a local destination.", | |
2003 | url_arg); | |
2004 | goto error; | |
2005 | } | |
2006 | } else { | |
2007 | ret = lttng_snapshot_output_set_network_url( | |
2008 | url_arg, snapshot_output); | |
2009 | free(uris); | |
2010 | if (ret != 0) { | |
2011 | ERR("Failed to assign '%s' as a network URL.", | |
2012 | url_arg); | |
2013 | goto error; | |
2014 | } | |
2015 | } | |
2016 | } | |
2017 | ||
2018 | if (path_arg) { | |
2019 | ret = lttng_snapshot_output_set_local_path( | |
2020 | path_arg, snapshot_output); | |
2021 | if (ret != 0) { | |
2022 | ERR("Failed to parse '%s' as a local path.", path_arg); | |
2023 | goto error; | |
2024 | } | |
2025 | } | |
2026 | ||
2027 | if (ctrl_url_arg) { | |
2028 | /* | |
2029 | * Two argument form, network output with separate control and | |
2030 | * data URLs. | |
2031 | */ | |
2032 | ret = lttng_snapshot_output_set_network_urls( | |
2033 | ctrl_url_arg, data_url_arg, snapshot_output); | |
2034 | if (ret != 0) { | |
2035 | ERR("Failed to parse `%s` and `%s` as control and data URLs.", | |
2036 | ctrl_url_arg, data_url_arg); | |
2037 | goto error; | |
2038 | } | |
2039 | } | |
2040 | ||
2041 | if (snapshot_output) { | |
2042 | action_status = lttng_action_snapshot_session_set_output( | |
2043 | action, snapshot_output); | |
2044 | if (action_status != LTTNG_ACTION_STATUS_OK) { | |
2045 | ERR("Failed to set snapshot session action's output."); | |
2046 | goto error; | |
2047 | } | |
2048 | ||
2049 | /* Ownership of `snapshot_output` has been transferred to the action. */ | |
2050 | snapshot_output = NULL; | |
2051 | } | |
2052 | ||
e45dd625 JR |
2053 | if (policy) { |
2054 | enum lttng_action_status status; | |
7f4d5b07 | 2055 | status = lttng_action_snapshot_session_set_rate_policy( |
e45dd625 JR |
2056 | action, policy); |
2057 | if (status != LTTNG_ACTION_STATUS_OK) { | |
7f4d5b07 | 2058 | ERR("Failed to set rate policy"); |
e45dd625 JR |
2059 | goto error; |
2060 | } | |
2061 | } | |
2062 | ||
4624dad0 SM |
2063 | goto end; |
2064 | ||
2065 | error: | |
2066 | lttng_action_destroy(action); | |
2067 | action = NULL; | |
2068 | free(error); | |
2069 | end: | |
2070 | free(snapshot_name_arg); | |
2071 | free(path_arg); | |
2072 | free(url_arg); | |
2073 | free(ctrl_url_arg); | |
2074 | free(data_url_arg); | |
2075 | free(snapshot_output); | |
f6b73530 | 2076 | free(max_size_arg); |
7f4d5b07 | 2077 | lttng_rate_policy_destroy(policy); |
ea76a8bb SM |
2078 | argpar_item_destroy(argpar_item); |
2079 | argpar_iter_destroy(argpar_iter); | |
4624dad0 SM |
2080 | return action; |
2081 | } | |
2082 | ||
2083 | struct action_descr { | |
2084 | const char *name; | |
5f5ce3e6 SM |
2085 | struct lttng_action *(*handler) (int *argc, const char ***argv, |
2086 | int argc_offset); | |
4624dad0 SM |
2087 | }; |
2088 | ||
2089 | static const | |
2090 | struct action_descr action_descrs[] = { | |
2091 | { "notify", handle_action_notify }, | |
2092 | { "start-session", handle_action_start_session }, | |
2093 | { "stop-session", handle_action_stop_session }, | |
2094 | { "rotate-session", handle_action_rotate_session }, | |
2095 | { "snapshot-session", handle_action_snapshot_session }, | |
2096 | }; | |
2097 | ||
2098 | static | |
5f5ce3e6 SM |
2099 | struct lttng_action *parse_action(const char *action_name, int *argc, |
2100 | const char ***argv, int argc_offset) | |
4624dad0 SM |
2101 | { |
2102 | int i; | |
2103 | struct lttng_action *action; | |
4624dad0 SM |
2104 | const struct action_descr *descr = NULL; |
2105 | ||
4624dad0 SM |
2106 | for (i = 0; i < ARRAY_SIZE(action_descrs); i++) { |
2107 | if (strcmp(action_name, action_descrs[i].name) == 0) { | |
2108 | descr = &action_descrs[i]; | |
2109 | break; | |
2110 | } | |
2111 | } | |
2112 | ||
2113 | if (!descr) { | |
2114 | ERR("Unknown action name: %s", action_name); | |
2115 | goto error; | |
2116 | } | |
2117 | ||
5f5ce3e6 | 2118 | action = descr->handler(argc, argv, argc_offset); |
4624dad0 SM |
2119 | if (!action) { |
2120 | /* The handler has already printed an error message. */ | |
2121 | goto error; | |
2122 | } | |
2123 | ||
2124 | goto end; | |
2125 | error: | |
2126 | action = NULL; | |
2127 | end: | |
2128 | return action; | |
2129 | } | |
2130 | ||
2131 | static const | |
2132 | struct argpar_opt_descr add_trigger_options[] = { | |
2133 | { OPT_HELP, 'h', "help", false }, | |
2134 | { OPT_LIST_OPTIONS, '\0', "list-options", false }, | |
29bcf415 SM |
2135 | { OPT_CONDITION, '\0', "condition", true }, |
2136 | { OPT_ACTION, '\0', "action", true }, | |
1d4b59f2 | 2137 | { OPT_NAME, '\0', "name", true }, |
481c5310 | 2138 | { OPT_OWNER_UID, '\0', "owner-uid", true }, |
4624dad0 SM |
2139 | ARGPAR_OPT_DESCR_SENTINEL, |
2140 | }; | |
2141 | ||
2142 | static | |
2143 | void lttng_actions_destructor(void *p) | |
2144 | { | |
2145 | struct lttng_action *action = p; | |
2146 | ||
2147 | lttng_action_destroy(action); | |
2148 | } | |
2149 | ||
2150 | int cmd_add_trigger(int argc, const char **argv) | |
2151 | { | |
2152 | int ret; | |
2153 | int my_argc = argc - 1; | |
2154 | const char **my_argv = argv + 1; | |
2155 | struct lttng_condition *condition = NULL; | |
2156 | struct lttng_dynamic_pointer_array actions; | |
ea76a8bb SM |
2157 | struct argpar_iter *argpar_iter = NULL; |
2158 | const struct argpar_item *argpar_item = NULL; | |
702f26c8 | 2159 | struct lttng_action *action_list = NULL; |
4624dad0 SM |
2160 | struct lttng_action *action = NULL; |
2161 | struct lttng_trigger *trigger = NULL; | |
1d4b59f2 | 2162 | char *name = NULL; |
4624dad0 | 2163 | int i; |
481c5310 | 2164 | char *owner_uid = NULL; |
a5c2d2a7 | 2165 | enum lttng_error_code ret_code; |
27692bb8 | 2166 | struct mi_writer *mi_writer = NULL; |
4624dad0 SM |
2167 | |
2168 | lttng_dynamic_pointer_array_init(&actions, lttng_actions_destructor); | |
2169 | ||
27692bb8 JR |
2170 | if (lttng_opt_mi) { |
2171 | mi_writer = mi_lttng_writer_create( | |
2172 | fileno(stdout), lttng_opt_mi); | |
2173 | if (!mi_writer) { | |
2174 | ret = CMD_ERROR; | |
2175 | goto error; | |
2176 | } | |
2177 | ||
2178 | /* Open command element. */ | |
2179 | ret = mi_lttng_writer_command_open(mi_writer, | |
2180 | mi_lttng_element_command_add_trigger); | |
2181 | if (ret) { | |
2182 | ret = CMD_ERROR; | |
2183 | goto error; | |
2184 | } | |
2185 | ||
2186 | /* Open output element. */ | |
2187 | ret = mi_lttng_writer_open_element( | |
2188 | mi_writer, mi_lttng_element_command_output); | |
2189 | if (ret) { | |
2190 | ret = CMD_ERROR; | |
2191 | goto error; | |
2192 | } | |
2193 | } | |
2194 | ||
4624dad0 | 2195 | while (true) { |
ea76a8bb | 2196 | enum parse_next_item_status status; |
4624dad0 | 2197 | int ingested_args; |
ea76a8bb SM |
2198 | const struct argpar_opt_descr *descr; |
2199 | const char *arg; | |
4624dad0 | 2200 | |
ea76a8bb SM |
2201 | argpar_iter_destroy(argpar_iter); |
2202 | argpar_iter = argpar_iter_create(my_argc, my_argv, | |
4624dad0 | 2203 | add_trigger_options); |
ea76a8bb SM |
2204 | if (!argpar_iter) { |
2205 | ERR("Failed to create argpar iter."); | |
4624dad0 SM |
2206 | goto error; |
2207 | } | |
2208 | ||
5f5ce3e6 SM |
2209 | status = parse_next_item(argpar_iter, &argpar_item, |
2210 | argc - my_argc, my_argv, true, NULL); | |
ea76a8bb | 2211 | if (status == PARSE_NEXT_ITEM_STATUS_ERROR) { |
4624dad0 | 2212 | goto error; |
ea76a8bb | 2213 | } else if (status == PARSE_NEXT_ITEM_STATUS_END) { |
4624dad0 SM |
2214 | break; |
2215 | } | |
2216 | ||
ea76a8bb | 2217 | assert(status == PARSE_NEXT_ITEM_STATUS_OK); |
4624dad0 | 2218 | |
ea76a8bb SM |
2219 | if (argpar_item_type(argpar_item) == ARGPAR_ITEM_TYPE_NON_OPT) { |
2220 | ERR("Unexpected argument `%s`.", | |
2221 | argpar_item_non_opt_arg(argpar_item)); | |
4624dad0 SM |
2222 | goto error; |
2223 | } | |
2224 | ||
ea76a8bb | 2225 | ingested_args = argpar_iter_ingested_orig_args(argpar_iter); |
4624dad0 SM |
2226 | |
2227 | my_argc -= ingested_args; | |
2228 | my_argv += ingested_args; | |
2229 | ||
ea76a8bb SM |
2230 | descr = argpar_item_opt_descr(argpar_item); |
2231 | arg = argpar_item_opt_arg(argpar_item); | |
2232 | ||
2233 | switch (descr->id) { | |
4624dad0 SM |
2234 | case OPT_HELP: |
2235 | SHOW_HELP(); | |
2236 | ret = 0; | |
2237 | goto end; | |
2238 | case OPT_LIST_OPTIONS: | |
2239 | list_cmd_options_argpar(stdout, add_trigger_options); | |
2240 | ret = 0; | |
2241 | goto end; | |
2242 | case OPT_CONDITION: | |
2243 | { | |
2244 | if (condition) { | |
2245 | ERR("A --condition was already given."); | |
2246 | goto error; | |
2247 | } | |
2248 | ||
5f5ce3e6 SM |
2249 | condition = parse_condition(arg, &my_argc, &my_argv, |
2250 | argc - my_argc); | |
4624dad0 SM |
2251 | if (!condition) { |
2252 | /* | |
2253 | * An error message was already printed by | |
2254 | * parse_condition. | |
2255 | */ | |
2256 | goto error; | |
2257 | } | |
2258 | ||
2259 | break; | |
2260 | } | |
2261 | case OPT_ACTION: | |
2262 | { | |
5f5ce3e6 SM |
2263 | action = parse_action(arg, &my_argc, &my_argv, |
2264 | argc - my_argc); | |
4624dad0 SM |
2265 | if (!action) { |
2266 | /* | |
2267 | * An error message was already printed by | |
2268 | * parse_condition. | |
2269 | */ | |
2270 | goto error; | |
2271 | } | |
2272 | ||
2273 | ret = lttng_dynamic_pointer_array_add_pointer( | |
2274 | &actions, action); | |
2275 | if (ret) { | |
2276 | ERR("Failed to add pointer to pointer array."); | |
2277 | goto error; | |
2278 | } | |
2279 | ||
ce9d7e23 | 2280 | /* Ownership of the action was transferred to the list. */ |
4624dad0 SM |
2281 | action = NULL; |
2282 | ||
2283 | break; | |
2284 | } | |
1d4b59f2 | 2285 | case OPT_NAME: |
4624dad0 | 2286 | { |
ea76a8bb | 2287 | if (!assign_string(&name, arg, "--name")) { |
4624dad0 SM |
2288 | goto error; |
2289 | } | |
2290 | ||
2291 | break; | |
2292 | } | |
481c5310 | 2293 | case OPT_OWNER_UID: |
4624dad0 | 2294 | { |
ea76a8bb | 2295 | if (!assign_string(&owner_uid, arg, |
481c5310 | 2296 | "--owner-uid")) { |
4624dad0 SM |
2297 | goto error; |
2298 | } | |
2299 | ||
2300 | break; | |
2301 | } | |
2302 | default: | |
2303 | abort(); | |
2304 | } | |
2305 | } | |
2306 | ||
2307 | if (!condition) { | |
2308 | ERR("Missing --condition."); | |
2309 | goto error; | |
2310 | } | |
2311 | ||
2312 | if (lttng_dynamic_pointer_array_get_count(&actions) == 0) { | |
2313 | ERR("Need at least one --action."); | |
2314 | goto error; | |
2315 | } | |
2316 | ||
702f26c8 JR |
2317 | action_list = lttng_action_list_create(); |
2318 | if (!action_list) { | |
4624dad0 SM |
2319 | goto error; |
2320 | } | |
2321 | ||
2322 | for (i = 0; i < lttng_dynamic_pointer_array_get_count(&actions); i++) { | |
2323 | enum lttng_action_status status; | |
2324 | ||
2325 | action = lttng_dynamic_pointer_array_steal_pointer(&actions, i); | |
2326 | ||
702f26c8 | 2327 | status = lttng_action_list_add_action(action_list, action); |
4624dad0 SM |
2328 | if (status != LTTNG_ACTION_STATUS_OK) { |
2329 | goto error; | |
2330 | } | |
2331 | ||
2332 | /* | |
702f26c8 | 2333 | * The `lttng_action_list_add_action()` takes a reference to |
4624dad0 SM |
2334 | * the action. We can destroy ours. |
2335 | */ | |
2336 | lttng_action_destroy(action); | |
2337 | action = NULL; | |
2338 | } | |
2339 | ||
702f26c8 | 2340 | trigger = lttng_trigger_create(condition, action_list); |
4624dad0 SM |
2341 | if (!trigger) { |
2342 | goto error; | |
2343 | } | |
2344 | ||
481c5310 | 2345 | if (owner_uid) { |
4624dad0 SM |
2346 | enum lttng_trigger_status trigger_status; |
2347 | char *end; | |
2348 | long long uid; | |
2349 | ||
2350 | errno = 0; | |
481c5310 SM |
2351 | uid = strtol(owner_uid, &end, 10); |
2352 | if (end == owner_uid || *end != '\0' || errno != 0) { | |
2353 | ERR("Failed to parse `%s` as a user id.", owner_uid); | |
07e29453 | 2354 | goto error; |
4624dad0 SM |
2355 | } |
2356 | ||
2357 | trigger_status = lttng_trigger_set_owner_uid(trigger, uid); | |
2358 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
2359 | ERR("Failed to set trigger's user identity."); | |
2360 | goto error; | |
2361 | } | |
2362 | } | |
2363 | ||
a5c2d2a7 JG |
2364 | if (name) { |
2365 | ret_code = lttng_register_trigger_with_name(trigger, name); | |
2366 | } else { | |
2367 | ret_code = lttng_register_trigger_with_automatic_name(trigger); | |
2368 | } | |
2369 | ||
2370 | if (ret_code != LTTNG_OK) { | |
2371 | ERR("Failed to register trigger: %s.", | |
2372 | lttng_strerror(-ret_code)); | |
4624dad0 SM |
2373 | goto error; |
2374 | } | |
2375 | ||
27692bb8 JR |
2376 | if (lttng_opt_mi) { |
2377 | ret_code = lttng_trigger_mi_serialize(trigger, mi_writer, NULL); | |
2378 | if (ret_code != LTTNG_OK) { | |
2379 | goto error; | |
2380 | } | |
ef3db6b0 JG |
2381 | } else { |
2382 | const char *returned_trigger_name; | |
2383 | const enum lttng_trigger_status trigger_status = | |
2384 | lttng_trigger_get_name(trigger, | |
2385 | &returned_trigger_name); | |
2386 | ||
2387 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { | |
2388 | WARN("Failed to retrieve the added trigger's name."); | |
2389 | } else { | |
2390 | MSG("Added trigger `%s`.", returned_trigger_name); | |
2391 | } | |
27692bb8 JR |
2392 | } |
2393 | ||
a5c2d2a7 | 2394 | ret = 0; |
4624dad0 SM |
2395 | |
2396 | goto end; | |
2397 | ||
2398 | error: | |
2399 | ret = 1; | |
2400 | ||
2401 | end: | |
27692bb8 | 2402 | /* Mi closing. */ |
1e0b19a2 | 2403 | if (lttng_opt_mi && mi_writer) { |
27692bb8 JR |
2404 | int mi_ret; |
2405 | ||
2406 | /* Close output element. */ | |
2407 | mi_ret = mi_lttng_writer_close_element(mi_writer); | |
2408 | if (mi_ret) { | |
2409 | ret = 1; | |
2410 | goto cleanup; | |
2411 | } | |
2412 | ||
2413 | mi_ret = mi_lttng_writer_write_element_bool(mi_writer, | |
2414 | mi_lttng_element_command_success, ret ? 0 : 1); | |
2415 | if (mi_ret) { | |
2416 | ret = 1; | |
2417 | goto cleanup; | |
2418 | } | |
2419 | ||
2420 | /* Command element close. */ | |
2421 | mi_ret = mi_lttng_writer_command_close(mi_writer); | |
2422 | if (mi_ret) { | |
2423 | ret = 1; | |
2424 | goto cleanup; | |
2425 | } | |
2426 | } | |
2427 | ||
2428 | cleanup: | |
ea76a8bb | 2429 | argpar_iter_destroy(argpar_iter); |
4624dad0 SM |
2430 | argpar_item_destroy(argpar_item); |
2431 | lttng_dynamic_pointer_array_reset(&actions); | |
2432 | lttng_condition_destroy(condition); | |
702f26c8 | 2433 | lttng_action_destroy(action_list); |
4624dad0 SM |
2434 | lttng_action_destroy(action); |
2435 | lttng_trigger_destroy(trigger); | |
1d4b59f2 | 2436 | free(name); |
481c5310 | 2437 | free(owner_uid); |
27692bb8 JR |
2438 | if (mi_writer && mi_lttng_writer_destroy(mi_writer)) { |
2439 | /* Preserve original error code. */ | |
2440 | ret = ret ? ret : CMD_ERROR; | |
2441 | } | |
2442 | ||
4624dad0 SM |
2443 | return ret; |
2444 | } |