| 1 | /* |
| 2 | * Copyright (C) 2021 Simon Marchi <simon.marchi@efficios.com> |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0-only |
| 5 | * |
| 6 | */ |
| 7 | |
| 8 | #include <ctype.h> |
| 9 | #include <stdio.h> |
| 10 | |
| 11 | #include "../command.h" |
| 12 | #include "../loglevel.h" |
| 13 | #include "../uprobe.h" |
| 14 | |
| 15 | #include "common/argpar/argpar.h" |
| 16 | #include "common/dynamic-array.h" |
| 17 | #include "common/string-utils/string-utils.h" |
| 18 | #include "common/utils.h" |
| 19 | /* For lttng_event_rule_type_str(). */ |
| 20 | #include <lttng/event-rule/event-rule-internal.h> |
| 21 | #include <lttng/lttng.h> |
| 22 | |
| 23 | #if (LTTNG_SYMBOL_NAME_LEN == 256) |
| 24 | #define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255" |
| 25 | #endif |
| 26 | |
| 27 | #ifdef LTTNG_EMBED_HELP |
| 28 | static const char help_msg[] = |
| 29 | #include <lttng-add-trigger.1.h> |
| 30 | ; |
| 31 | #endif |
| 32 | |
| 33 | enum { |
| 34 | OPT_HELP, |
| 35 | OPT_LIST_OPTIONS, |
| 36 | |
| 37 | OPT_CONDITION, |
| 38 | OPT_ACTION, |
| 39 | OPT_ID, |
| 40 | OPT_FIRE_ONCE_AFTER, |
| 41 | OPT_FIRE_EVERY, |
| 42 | OPT_USER_ID, |
| 43 | |
| 44 | OPT_ALL, |
| 45 | OPT_FILTER, |
| 46 | OPT_EXCLUDE, |
| 47 | OPT_LOGLEVEL, |
| 48 | OPT_LOGLEVEL_ONLY, |
| 49 | |
| 50 | OPT_USERSPACE, |
| 51 | OPT_KERNEL, |
| 52 | OPT_LOG4J, |
| 53 | OPT_JUL, |
| 54 | OPT_PYTHON, |
| 55 | |
| 56 | OPT_FUNCTION, |
| 57 | OPT_PROBE, |
| 58 | OPT_USERSPACE_PROBE, |
| 59 | OPT_SYSCALL, |
| 60 | OPT_TRACEPOINT, |
| 61 | |
| 62 | OPT_NAME, |
| 63 | OPT_MAX_SIZE, |
| 64 | OPT_DATA_URL, |
| 65 | OPT_CTRL_URL, |
| 66 | OPT_URL, |
| 67 | OPT_PATH, |
| 68 | }; |
| 69 | |
| 70 | static const struct argpar_opt_descr event_rule_opt_descrs[] = { |
| 71 | { OPT_ALL, 'a', "all", false }, |
| 72 | { OPT_FILTER, 'f', "filter", true }, |
| 73 | { OPT_EXCLUDE, 'x', "exclude", true }, |
| 74 | { OPT_LOGLEVEL, '\0', "loglevel", true }, |
| 75 | { OPT_LOGLEVEL_ONLY, '\0', "loglevel-only", true }, |
| 76 | |
| 77 | /* Domains */ |
| 78 | { OPT_USERSPACE, 'u', "userspace", false }, |
| 79 | { OPT_KERNEL, 'k', "kernel", false }, |
| 80 | { OPT_LOG4J, 'l', "log4j", false }, |
| 81 | { OPT_JUL, 'j', "jul", false }, |
| 82 | { OPT_PYTHON, 'p', "python", false }, |
| 83 | |
| 84 | /* Event rule types */ |
| 85 | { OPT_FUNCTION, '\0', "function", true }, |
| 86 | { OPT_PROBE, '\0', "probe", true }, |
| 87 | { OPT_USERSPACE_PROBE, '\0', "userspace-probe", true }, |
| 88 | { OPT_SYSCALL, '\0', "syscall" }, |
| 89 | { OPT_TRACEPOINT, '\0', "tracepoint" }, |
| 90 | |
| 91 | ARGPAR_OPT_DESCR_SENTINEL |
| 92 | }; |
| 93 | |
| 94 | static |
| 95 | bool assign_domain_type(enum lttng_domain_type *dest, |
| 96 | enum lttng_domain_type src) |
| 97 | { |
| 98 | bool ret; |
| 99 | |
| 100 | if (*dest == LTTNG_DOMAIN_NONE || *dest == src) { |
| 101 | *dest = src; |
| 102 | ret = true; |
| 103 | } else { |
| 104 | ERR("Multiple domains specified."); |
| 105 | ret = false; |
| 106 | } |
| 107 | |
| 108 | return ret; |
| 109 | } |
| 110 | |
| 111 | static |
| 112 | bool assign_event_rule_type(enum lttng_event_rule_type *dest, |
| 113 | enum lttng_event_rule_type src) |
| 114 | { |
| 115 | bool ret; |
| 116 | |
| 117 | if (*dest == LTTNG_EVENT_RULE_TYPE_UNKNOWN || *dest == src) { |
| 118 | *dest = src; |
| 119 | ret = true; |
| 120 | } else { |
| 121 | ERR("Multiple event types specified."); |
| 122 | ret = false; |
| 123 | } |
| 124 | |
| 125 | return ret; |
| 126 | } |
| 127 | |
| 128 | static |
| 129 | bool assign_string(char **dest, const char *src, const char *opt_name) |
| 130 | { |
| 131 | bool ret; |
| 132 | |
| 133 | if (*dest) { |
| 134 | ERR("Duplicate '%s' given.", opt_name); |
| 135 | goto error; |
| 136 | } |
| 137 | |
| 138 | *dest = strdup(src); |
| 139 | if (!*dest) { |
| 140 | PERROR("Failed to allocate string '%s'.", opt_name); |
| 141 | goto error; |
| 142 | } |
| 143 | |
| 144 | ret = true; |
| 145 | goto end; |
| 146 | |
| 147 | error: |
| 148 | ret = false; |
| 149 | |
| 150 | end: |
| 151 | return ret; |
| 152 | } |
| 153 | |
| 154 | /* This is defined in enable_events.c. */ |
| 155 | LTTNG_HIDDEN |
| 156 | int create_exclusion_list_and_validate(const char *event_name, |
| 157 | const char *exclusions_arg, |
| 158 | char ***exclusion_list); |
| 159 | |
| 160 | /* |
| 161 | * Parse `str` as a log level in domain `domain_type`. Return -1 if the string |
| 162 | * is not recognized as a valid log level. |
| 163 | */ |
| 164 | static |
| 165 | int parse_loglevel_string(const char *str, enum lttng_domain_type domain_type) |
| 166 | { |
| 167 | switch (domain_type) { |
| 168 | case LTTNG_DOMAIN_UST: |
| 169 | { |
| 170 | enum lttng_loglevel loglevel; |
| 171 | const int ret = loglevel_name_to_value(str, &loglevel); |
| 172 | |
| 173 | return ret == -1 ? ret : (int) loglevel; |
| 174 | } |
| 175 | case LTTNG_DOMAIN_LOG4J: |
| 176 | { |
| 177 | enum lttng_loglevel_log4j loglevel; |
| 178 | const int ret = loglevel_log4j_name_to_value(str, &loglevel); |
| 179 | |
| 180 | return ret == -1 ? ret : (int) loglevel; |
| 181 | } |
| 182 | case LTTNG_DOMAIN_JUL: |
| 183 | { |
| 184 | enum lttng_loglevel_jul loglevel; |
| 185 | const int ret = loglevel_jul_name_to_value(str, &loglevel); |
| 186 | |
| 187 | return ret == -1 ? ret : (int) loglevel; |
| 188 | } |
| 189 | case LTTNG_DOMAIN_PYTHON: |
| 190 | { |
| 191 | enum lttng_loglevel_python loglevel; |
| 192 | const int ret = loglevel_python_name_to_value(str, &loglevel); |
| 193 | |
| 194 | return ret == -1 ? ret : (int) loglevel; |
| 195 | } |
| 196 | default: |
| 197 | /* Invalid domain type. */ |
| 198 | abort(); |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | static int parse_kernel_probe_opts(const char *source, |
| 203 | struct lttng_kernel_probe_location **location) |
| 204 | { |
| 205 | int ret = 0; |
| 206 | int match; |
| 207 | char s_hex[19]; |
| 208 | char name[LTTNG_SYMBOL_NAME_LEN]; |
| 209 | char *symbol_name = NULL; |
| 210 | uint64_t offset; |
| 211 | |
| 212 | /* Check for symbol+offset. */ |
| 213 | match = sscanf(source, |
| 214 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API |
| 215 | "[^'+']+%18s", |
| 216 | name, s_hex); |
| 217 | if (match == 2) { |
| 218 | if (*s_hex == '\0') { |
| 219 | ERR("Kernel probe symbol offset is missing."); |
| 220 | goto error; |
| 221 | } |
| 222 | |
| 223 | symbol_name = strndup(name, LTTNG_SYMBOL_NAME_LEN); |
| 224 | if (!symbol_name) { |
| 225 | PERROR("Failed to copy kernel probe location symbol name."); |
| 226 | goto error; |
| 227 | } |
| 228 | offset = strtoul(s_hex, NULL, 0); |
| 229 | |
| 230 | *location = lttng_kernel_probe_location_symbol_create( |
| 231 | symbol_name, offset); |
| 232 | if (!location) { |
| 233 | ERR("Failed to create symbol kernel probe location."); |
| 234 | goto error; |
| 235 | } |
| 236 | |
| 237 | goto end; |
| 238 | } |
| 239 | |
| 240 | /* Check for symbol. */ |
| 241 | if (isalpha(name[0]) || name[0] == '_') { |
| 242 | match = sscanf(source, |
| 243 | "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API |
| 244 | "s", |
| 245 | name); |
| 246 | if (match == 1) { |
| 247 | symbol_name = strndup(name, LTTNG_SYMBOL_NAME_LEN); |
| 248 | if (!symbol_name) { |
| 249 | ERR("Failed to copy kernel probe location symbol name."); |
| 250 | goto error; |
| 251 | } |
| 252 | |
| 253 | *location = lttng_kernel_probe_location_symbol_create( |
| 254 | symbol_name, 0); |
| 255 | if (!*location) { |
| 256 | ERR("Failed to create symbol kernel probe location."); |
| 257 | goto error; |
| 258 | } |
| 259 | |
| 260 | goto end; |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | /* Check for address. */ |
| 265 | match = sscanf(source, "%18s", s_hex); |
| 266 | if (match > 0) { |
| 267 | uint64_t address; |
| 268 | |
| 269 | if (*s_hex == '\0') { |
| 270 | ERR("Invalid kernel probe location address."); |
| 271 | goto error; |
| 272 | } |
| 273 | |
| 274 | address = strtoul(s_hex, NULL, 0); |
| 275 | *location = lttng_kernel_probe_location_address_create(address); |
| 276 | if (!location) { |
| 277 | ERR("Failed to create symbol kernel probe location."); |
| 278 | goto error; |
| 279 | } |
| 280 | |
| 281 | goto end; |
| 282 | } |
| 283 | |
| 284 | error: |
| 285 | /* No match */ |
| 286 | ret = -1; |
| 287 | *location = NULL; |
| 288 | |
| 289 | end: |
| 290 | free(symbol_name); |
| 291 | return ret; |
| 292 | } |
| 293 | |
| 294 | static struct lttng_event_rule *parse_event_rule(int *argc, const char ***argv) |
| 295 | { |
| 296 | struct lttng_event_rule *er = NULL; |
| 297 | enum lttng_domain_type domain_type = LTTNG_DOMAIN_NONE; |
| 298 | enum lttng_event_rule_type event_rule_type = |
| 299 | LTTNG_EVENT_RULE_TYPE_UNKNOWN; |
| 300 | struct argpar_state *state; |
| 301 | struct argpar_item *item = NULL; |
| 302 | char *error = NULL; |
| 303 | int consumed_args = -1; |
| 304 | struct lttng_kernel_probe_location *kernel_probe_location = NULL; |
| 305 | struct lttng_userspace_probe_location *userspace_probe_location = NULL; |
| 306 | |
| 307 | /* Was the -a/--all flag provided? */ |
| 308 | bool all_events = false; |
| 309 | |
| 310 | /* Tracepoint name (non-option argument). */ |
| 311 | const char *tracepoint_name = NULL; |
| 312 | |
| 313 | /* Holds the argument of --probe / --userspace-probe. */ |
| 314 | char *source = NULL; |
| 315 | |
| 316 | /* Filter. */ |
| 317 | char *filter = NULL; |
| 318 | |
| 319 | /* Exclude. */ |
| 320 | char *exclude = NULL; |
| 321 | char **exclusion_list = NULL; |
| 322 | |
| 323 | /* Log level. */ |
| 324 | char *loglevel_str = NULL; |
| 325 | bool loglevel_only = false; |
| 326 | |
| 327 | state = argpar_state_create(*argc, *argv, event_rule_opt_descrs); |
| 328 | if (!state) { |
| 329 | ERR("Failed to allocate an argpar state."); |
| 330 | goto error; |
| 331 | } |
| 332 | |
| 333 | while (true) { |
| 334 | enum argpar_state_parse_next_status status; |
| 335 | |
| 336 | ARGPAR_ITEM_DESTROY_AND_RESET(item); |
| 337 | status = argpar_state_parse_next(state, &item, &error); |
| 338 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { |
| 339 | ERR("%s", error); |
| 340 | goto error; |
| 341 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { |
| 342 | /* Just stop parsing here. */ |
| 343 | break; |
| 344 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { |
| 345 | break; |
| 346 | } |
| 347 | |
| 348 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); |
| 349 | |
| 350 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { |
| 351 | const struct argpar_item_opt *item_opt = |
| 352 | (const struct argpar_item_opt *) item; |
| 353 | |
| 354 | switch (item_opt->descr->id) { |
| 355 | /* Domains. */ |
| 356 | case OPT_USERSPACE: |
| 357 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_UST)) { |
| 358 | goto error; |
| 359 | } |
| 360 | |
| 361 | break; |
| 362 | case OPT_KERNEL: |
| 363 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_KERNEL)) { |
| 364 | goto error; |
| 365 | } |
| 366 | |
| 367 | break; |
| 368 | case OPT_LOG4J: |
| 369 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_LOG4J)) { |
| 370 | goto error; |
| 371 | } |
| 372 | |
| 373 | break; |
| 374 | case OPT_JUL: |
| 375 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_JUL)) { |
| 376 | goto error; |
| 377 | } |
| 378 | |
| 379 | break; |
| 380 | case OPT_PYTHON: |
| 381 | if (!assign_domain_type(&domain_type, LTTNG_DOMAIN_PYTHON)) { |
| 382 | goto error; |
| 383 | } |
| 384 | |
| 385 | break; |
| 386 | |
| 387 | /* Event rule types */ |
| 388 | case OPT_FUNCTION: |
| 389 | if (!assign_event_rule_type(&event_rule_type, |
| 390 | LTTNG_EVENT_RULE_TYPE_KRETPROBE)) { |
| 391 | goto error; |
| 392 | } |
| 393 | |
| 394 | break; |
| 395 | case OPT_PROBE: |
| 396 | if (!assign_event_rule_type(&event_rule_type, |
| 397 | LTTNG_EVENT_RULE_TYPE_KPROBE)) { |
| 398 | goto error; |
| 399 | } |
| 400 | |
| 401 | if (!assign_string(&source, item_opt->arg, "source")) { |
| 402 | goto error; |
| 403 | } |
| 404 | |
| 405 | break; |
| 406 | case OPT_USERSPACE_PROBE: |
| 407 | if (!assign_event_rule_type(&event_rule_type, |
| 408 | LTTNG_EVENT_RULE_TYPE_UPROBE)) { |
| 409 | goto error; |
| 410 | } |
| 411 | |
| 412 | if (!assign_string(&source, item_opt->arg, "source")) { |
| 413 | goto error; |
| 414 | } |
| 415 | |
| 416 | break; |
| 417 | case OPT_SYSCALL: |
| 418 | if (!assign_event_rule_type(&event_rule_type, |
| 419 | LTTNG_EVENT_RULE_TYPE_SYSCALL)) { |
| 420 | goto error; |
| 421 | } |
| 422 | |
| 423 | break; |
| 424 | case OPT_TRACEPOINT: |
| 425 | if (!assign_event_rule_type(&event_rule_type, |
| 426 | LTTNG_EVENT_RULE_TYPE_TRACEPOINT)) { |
| 427 | goto error; |
| 428 | } |
| 429 | |
| 430 | break; |
| 431 | case OPT_ALL: |
| 432 | all_events = true; |
| 433 | break; |
| 434 | case OPT_FILTER: |
| 435 | if (!assign_string(&filter, item_opt->arg, |
| 436 | "--filter/-f")) { |
| 437 | goto error; |
| 438 | } |
| 439 | |
| 440 | break; |
| 441 | case OPT_EXCLUDE: |
| 442 | if (!assign_string(&exclude, item_opt->arg, |
| 443 | "--exclude/-x")) { |
| 444 | goto error; |
| 445 | } |
| 446 | |
| 447 | break; |
| 448 | case OPT_LOGLEVEL: |
| 449 | case OPT_LOGLEVEL_ONLY: |
| 450 | if (!assign_string(&loglevel_str, item_opt->arg, |
| 451 | "--loglevel/--loglevel-only")) { |
| 452 | goto error; |
| 453 | } |
| 454 | |
| 455 | loglevel_only = item_opt->descr->id == |
| 456 | OPT_LOGLEVEL_ONLY; |
| 457 | break; |
| 458 | default: |
| 459 | abort(); |
| 460 | } |
| 461 | } else { |
| 462 | const struct argpar_item_non_opt *item_non_opt = |
| 463 | (const struct argpar_item_non_opt *) |
| 464 | item; |
| 465 | |
| 466 | /* |
| 467 | * Don't accept two non-option arguments/tracepoint |
| 468 | * names. |
| 469 | */ |
| 470 | if (tracepoint_name) { |
| 471 | ERR("Unexpected argument '%s'", |
| 472 | item_non_opt->arg); |
| 473 | goto error; |
| 474 | } |
| 475 | |
| 476 | tracepoint_name = item_non_opt->arg; |
| 477 | } |
| 478 | } |
| 479 | |
| 480 | if (event_rule_type == LTTNG_EVENT_RULE_TYPE_UNKNOWN) { |
| 481 | event_rule_type = LTTNG_EVENT_RULE_TYPE_TRACEPOINT; |
| 482 | } |
| 483 | |
| 484 | /* |
| 485 | * Option -a is applicable to event rules of type tracepoint and |
| 486 | * syscall, and it is equivalent to using "*" as the tracepoint name. |
| 487 | */ |
| 488 | if (all_events) { |
| 489 | switch (event_rule_type) { |
| 490 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: |
| 491 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: |
| 492 | break; |
| 493 | default: |
| 494 | ERR("Can't use -a/--all with %s event rules.", |
| 495 | lttng_event_rule_type_str(event_rule_type)); |
| 496 | goto error; |
| 497 | } |
| 498 | |
| 499 | if (tracepoint_name) { |
| 500 | ERR("Can't provide a tracepoint name with -a/--all."); |
| 501 | goto error; |
| 502 | } |
| 503 | |
| 504 | /* In which case, it's equivalent to tracepoint name "*". */ |
| 505 | tracepoint_name = "*"; |
| 506 | } |
| 507 | |
| 508 | /* |
| 509 | * A tracepoint name (or -a, for the event rule types that accept it) |
| 510 | * is required. |
| 511 | */ |
| 512 | if (!tracepoint_name) { |
| 513 | ERR("Need to provide either a tracepoint name or -a/--all."); |
| 514 | goto error; |
| 515 | } |
| 516 | |
| 517 | /* |
| 518 | * We don't support multiple tracepoint names for now. |
| 519 | */ |
| 520 | if (strchr(tracepoint_name, ',')) { |
| 521 | ERR("Comma separated tracepoint names are not supported."); |
| 522 | goto error; |
| 523 | } |
| 524 | |
| 525 | /* |
| 526 | * Update *argc and *argv so our caller can keep parsing what follows. |
| 527 | */ |
| 528 | consumed_args = argpar_state_get_ingested_orig_args(state); |
| 529 | assert(consumed_args >= 0); |
| 530 | *argc -= consumed_args; |
| 531 | *argv += consumed_args; |
| 532 | |
| 533 | /* Need to specify a domain. */ |
| 534 | if (domain_type == LTTNG_DOMAIN_NONE) { |
| 535 | ERR("Please specify a domain (--kernel/--userspace/--jul/--log4j/--python)."); |
| 536 | goto error; |
| 537 | } |
| 538 | |
| 539 | /* Validate event rule type against domain. */ |
| 540 | switch (event_rule_type) { |
| 541 | case LTTNG_EVENT_RULE_TYPE_KPROBE: |
| 542 | case LTTNG_EVENT_RULE_TYPE_KRETPROBE: |
| 543 | case LTTNG_EVENT_RULE_TYPE_UPROBE: |
| 544 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: |
| 545 | if (domain_type != LTTNG_DOMAIN_KERNEL) { |
| 546 | ERR("Event type not available for user-space tracing."); |
| 547 | goto error; |
| 548 | } |
| 549 | break; |
| 550 | |
| 551 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: |
| 552 | break; |
| 553 | |
| 554 | default: |
| 555 | abort(); |
| 556 | } |
| 557 | |
| 558 | /* |
| 559 | * Adding a filter to a probe, function or userspace-probe would be |
| 560 | * denied by the kernel tracer as it's not supported at the moment. We |
| 561 | * do an early check here to warn the user. |
| 562 | */ |
| 563 | if (filter && domain_type == LTTNG_DOMAIN_KERNEL) { |
| 564 | switch (event_rule_type) { |
| 565 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: |
| 566 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: |
| 567 | break; |
| 568 | default: |
| 569 | ERR("Filter expressions are not supported for %s event rules.", |
| 570 | lttng_event_rule_type_str(event_rule_type)); |
| 571 | goto error; |
| 572 | } |
| 573 | } |
| 574 | |
| 575 | /* If --exclude/-x was passed, split it into an exclusion list. */ |
| 576 | if (exclude) { |
| 577 | if (domain_type != LTTNG_DOMAIN_UST) { |
| 578 | ERR("Event name exclusions are not yet implemented for %s event rules.", |
| 579 | get_domain_str(domain_type)); |
| 580 | goto error; |
| 581 | } |
| 582 | |
| 583 | |
| 584 | if (create_exclusion_list_and_validate(tracepoint_name, exclude, |
| 585 | &exclusion_list) != 0) { |
| 586 | ERR("Failed to create exclusion list."); |
| 587 | goto error; |
| 588 | } |
| 589 | } |
| 590 | |
| 591 | if (loglevel_str && event_rule_type != LTTNG_EVENT_RULE_TYPE_TRACEPOINT) { |
| 592 | ERR("Log levels are only applicable to tracepoint event rules."); |
| 593 | goto error; |
| 594 | } |
| 595 | |
| 596 | /* Finally, create the event rule object. */ |
| 597 | switch (event_rule_type) { |
| 598 | case LTTNG_EVENT_RULE_TYPE_TRACEPOINT: |
| 599 | { |
| 600 | enum lttng_event_rule_status event_rule_status; |
| 601 | |
| 602 | er = lttng_event_rule_tracepoint_create(domain_type); |
| 603 | if (!er) { |
| 604 | ERR("Failed to create tracepoint event rule."); |
| 605 | goto error; |
| 606 | } |
| 607 | |
| 608 | /* Set pattern. */ |
| 609 | event_rule_status = lttng_event_rule_tracepoint_set_pattern( |
| 610 | er, tracepoint_name); |
| 611 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
| 612 | ERR("Failed to set tracepoint event rule's pattern to '%s'.", |
| 613 | tracepoint_name); |
| 614 | goto error; |
| 615 | } |
| 616 | |
| 617 | /* Set filter. */ |
| 618 | if (filter) { |
| 619 | event_rule_status = lttng_event_rule_tracepoint_set_filter( |
| 620 | er, filter); |
| 621 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
| 622 | ERR("Failed to set tracepoint event rule's filter to '%s'.", |
| 623 | filter); |
| 624 | goto error; |
| 625 | } |
| 626 | } |
| 627 | |
| 628 | /* Set exclusion list. */ |
| 629 | if (exclusion_list) { |
| 630 | int n; |
| 631 | |
| 632 | for (n = 0; exclusion_list[n]; n++) { |
| 633 | event_rule_status = lttng_event_rule_tracepoint_add_exclusion( |
| 634 | er, |
| 635 | exclusion_list[n]); |
| 636 | if (event_rule_status != |
| 637 | LTTNG_EVENT_RULE_STATUS_OK) { |
| 638 | ERR("Failed to set tracepoint exclusion list element '%s'", |
| 639 | exclusion_list[n]); |
| 640 | goto error; |
| 641 | } |
| 642 | } |
| 643 | } |
| 644 | |
| 645 | if (loglevel_str) { |
| 646 | int loglevel; |
| 647 | |
| 648 | if (domain_type == LTTNG_DOMAIN_KERNEL) { |
| 649 | ERR("Log levels are not supported by the kernel tracer."); |
| 650 | goto error; |
| 651 | } |
| 652 | |
| 653 | loglevel = parse_loglevel_string( |
| 654 | loglevel_str, domain_type); |
| 655 | if (loglevel < 0) { |
| 656 | ERR("Failed to parse `%s` as a log level.", |
| 657 | loglevel_str); |
| 658 | goto error; |
| 659 | } |
| 660 | |
| 661 | if (loglevel_only) { |
| 662 | event_rule_status = lttng_event_rule_tracepoint_set_log_level( |
| 663 | er, loglevel); |
| 664 | } else { |
| 665 | event_rule_status = lttng_event_rule_tracepoint_set_log_level_range_lower_bound( |
| 666 | er, loglevel); |
| 667 | } |
| 668 | |
| 669 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
| 670 | ERR("Failed to set log level on event fule."); |
| 671 | goto error; |
| 672 | } |
| 673 | } |
| 674 | |
| 675 | break; |
| 676 | } |
| 677 | case LTTNG_EVENT_RULE_TYPE_KPROBE: |
| 678 | { |
| 679 | int ret; |
| 680 | enum lttng_event_rule_status event_rule_status; |
| 681 | |
| 682 | er = lttng_event_rule_kprobe_create(); |
| 683 | if (!er) { |
| 684 | ERR("Failed to create kprobe event rule."); |
| 685 | goto error; |
| 686 | } |
| 687 | |
| 688 | ret = parse_kernel_probe_opts(source, &kernel_probe_location); |
| 689 | if (ret) { |
| 690 | ERR("Failed to parse kernel probe location."); |
| 691 | goto error; |
| 692 | } |
| 693 | |
| 694 | event_rule_status = lttng_event_rule_kprobe_set_name(er, tracepoint_name); |
| 695 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
| 696 | ERR("Failed to set kprobe event rule's name to '%s'.", tracepoint_name); |
| 697 | goto error; |
| 698 | } |
| 699 | |
| 700 | assert(kernel_probe_location); |
| 701 | event_rule_status = lttng_event_rule_kprobe_set_location(er, kernel_probe_location); |
| 702 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
| 703 | ERR("Failed to set kprobe event rule's location."); |
| 704 | goto error; |
| 705 | } |
| 706 | |
| 707 | break; |
| 708 | } |
| 709 | case LTTNG_EVENT_RULE_TYPE_UPROBE: |
| 710 | { |
| 711 | int ret; |
| 712 | enum lttng_event_rule_status event_rule_status; |
| 713 | |
| 714 | ret = parse_userspace_probe_opts( |
| 715 | source, &userspace_probe_location); |
| 716 | if (ret) { |
| 717 | ERR("Failed to parse user space probe location."); |
| 718 | goto error; |
| 719 | } |
| 720 | |
| 721 | er = lttng_event_rule_uprobe_create(); |
| 722 | if (!er) { |
| 723 | ERR("Failed to create user space probe event rule."); |
| 724 | goto error; |
| 725 | } |
| 726 | |
| 727 | event_rule_status = lttng_event_rule_uprobe_set_location( |
| 728 | er, userspace_probe_location); |
| 729 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
| 730 | ERR("Failed to set user space probe event rule's location."); |
| 731 | goto error; |
| 732 | } |
| 733 | |
| 734 | event_rule_status = lttng_event_rule_uprobe_set_name( |
| 735 | er, tracepoint_name); |
| 736 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
| 737 | ERR("Failed to set user space probe event rule's name to '%s'.", |
| 738 | tracepoint_name); |
| 739 | goto error; |
| 740 | } |
| 741 | |
| 742 | break; |
| 743 | } |
| 744 | case LTTNG_EVENT_RULE_TYPE_SYSCALL: |
| 745 | { |
| 746 | enum lttng_event_rule_status event_rule_status; |
| 747 | |
| 748 | er = lttng_event_rule_syscall_create(); |
| 749 | if (!er) { |
| 750 | ERR("Failed to create syscall event rule."); |
| 751 | goto error; |
| 752 | } |
| 753 | |
| 754 | event_rule_status = lttng_event_rule_syscall_set_pattern( |
| 755 | er, tracepoint_name); |
| 756 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
| 757 | ERR("Failed to set syscall event rule's pattern to '%s'.", |
| 758 | tracepoint_name); |
| 759 | goto error; |
| 760 | } |
| 761 | |
| 762 | if (filter) { |
| 763 | event_rule_status = lttng_event_rule_syscall_set_filter( |
| 764 | er, filter); |
| 765 | if (event_rule_status != LTTNG_EVENT_RULE_STATUS_OK) { |
| 766 | ERR("Failed to set syscall event rule's filter to '%s'.", |
| 767 | filter); |
| 768 | goto error; |
| 769 | } |
| 770 | } |
| 771 | |
| 772 | break; |
| 773 | } |
| 774 | default: |
| 775 | abort(); |
| 776 | goto error; |
| 777 | } |
| 778 | |
| 779 | goto end; |
| 780 | |
| 781 | error: |
| 782 | lttng_event_rule_destroy(er); |
| 783 | er = NULL; |
| 784 | |
| 785 | end: |
| 786 | argpar_item_destroy(item); |
| 787 | free(error); |
| 788 | argpar_state_destroy(state); |
| 789 | free(filter); |
| 790 | free(exclude); |
| 791 | free(loglevel_str); |
| 792 | free(source); |
| 793 | strutils_free_null_terminated_array_of_strings(exclusion_list); |
| 794 | lttng_kernel_probe_location_destroy(kernel_probe_location); |
| 795 | lttng_userspace_probe_location_destroy(userspace_probe_location); |
| 796 | return er; |
| 797 | } |
| 798 | |
| 799 | static |
| 800 | struct lttng_condition *handle_condition_event(int *argc, const char ***argv) |
| 801 | { |
| 802 | struct lttng_event_rule *er; |
| 803 | struct lttng_condition *c; |
| 804 | |
| 805 | er = parse_event_rule(argc, argv); |
| 806 | if (!er) { |
| 807 | c = NULL; |
| 808 | goto end; |
| 809 | } |
| 810 | |
| 811 | c = lttng_condition_event_rule_create(er); |
| 812 | lttng_event_rule_destroy(er); |
| 813 | if (!c) { |
| 814 | goto end; |
| 815 | } |
| 816 | |
| 817 | end: |
| 818 | return c; |
| 819 | } |
| 820 | |
| 821 | static |
| 822 | struct lttng_condition *handle_condition_session_consumed_size(int *argc, const char ***argv) |
| 823 | { |
| 824 | struct lttng_condition *cond = NULL; |
| 825 | struct argpar_state *state = NULL; |
| 826 | struct argpar_item *item = NULL; |
| 827 | const char *threshold_arg = NULL; |
| 828 | const char *session_name_arg = NULL; |
| 829 | uint64_t threshold; |
| 830 | char *error = NULL; |
| 831 | enum lttng_condition_status condition_status; |
| 832 | |
| 833 | state = argpar_state_create(*argc, *argv, event_rule_opt_descrs); |
| 834 | if (!state) { |
| 835 | ERR("Failed to allocate an argpar state."); |
| 836 | goto error; |
| 837 | } |
| 838 | |
| 839 | while (true) { |
| 840 | enum argpar_state_parse_next_status status; |
| 841 | |
| 842 | ARGPAR_ITEM_DESTROY_AND_RESET(item); |
| 843 | status = argpar_state_parse_next(state, &item, &error); |
| 844 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { |
| 845 | ERR("%s", error); |
| 846 | goto error; |
| 847 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { |
| 848 | /* Just stop parsing here. */ |
| 849 | break; |
| 850 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { |
| 851 | break; |
| 852 | } |
| 853 | |
| 854 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); |
| 855 | |
| 856 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { |
| 857 | const struct argpar_item_opt *item_opt = |
| 858 | (const struct argpar_item_opt *) item; |
| 859 | |
| 860 | switch (item_opt->descr->id) { |
| 861 | default: |
| 862 | abort(); |
| 863 | } |
| 864 | } else { |
| 865 | const struct argpar_item_non_opt *item_non_opt; |
| 866 | |
| 867 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); |
| 868 | |
| 869 | item_non_opt = (const struct argpar_item_non_opt *) item; |
| 870 | |
| 871 | switch (item_non_opt->non_opt_index) { |
| 872 | case 0: |
| 873 | session_name_arg = item_non_opt->arg; |
| 874 | break; |
| 875 | case 1: |
| 876 | threshold_arg = item_non_opt->arg; |
| 877 | break; |
| 878 | default: |
| 879 | ERR("Unexpected argument `%s`.", |
| 880 | item_non_opt->arg); |
| 881 | goto error; |
| 882 | } |
| 883 | } |
| 884 | } |
| 885 | |
| 886 | *argc -= argpar_state_get_ingested_orig_args(state); |
| 887 | *argv += argpar_state_get_ingested_orig_args(state); |
| 888 | |
| 889 | if (!session_name_arg) { |
| 890 | ERR("Missing session name argument."); |
| 891 | goto error; |
| 892 | } |
| 893 | |
| 894 | if (!threshold_arg) { |
| 895 | ERR("Missing threshold argument."); |
| 896 | goto error; |
| 897 | } |
| 898 | |
| 899 | if (utils_parse_size_suffix(threshold_arg, &threshold) != 0) { |
| 900 | ERR("Failed to parse `%s` as a size.", threshold_arg); |
| 901 | goto error; |
| 902 | } |
| 903 | |
| 904 | cond = lttng_condition_session_consumed_size_create(); |
| 905 | if (!cond) { |
| 906 | ERR("Failed to allocate a session consumed size condition."); |
| 907 | goto error; |
| 908 | } |
| 909 | |
| 910 | condition_status = lttng_condition_session_consumed_size_set_session_name( |
| 911 | cond, session_name_arg); |
| 912 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 913 | ERR("Failed to set session consumed size condition's session name to '%s'.", |
| 914 | session_name_arg); |
| 915 | goto error; |
| 916 | } |
| 917 | |
| 918 | condition_status = lttng_condition_session_consumed_size_set_threshold( |
| 919 | cond, threshold); |
| 920 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 921 | ERR("Failed to set session consumed size condition threshold."); |
| 922 | goto error; |
| 923 | } |
| 924 | |
| 925 | goto end; |
| 926 | |
| 927 | error: |
| 928 | lttng_condition_destroy(cond); |
| 929 | cond = NULL; |
| 930 | |
| 931 | end: |
| 932 | argpar_state_destroy(state); |
| 933 | argpar_item_destroy(item); |
| 934 | free(error); |
| 935 | return cond; |
| 936 | } |
| 937 | |
| 938 | static |
| 939 | struct lttng_condition *handle_condition_buffer_usage_high(int *argc, const char ***argv) |
| 940 | { |
| 941 | ERR("High buffer usage threshold conditions are unsupported for the moment."); |
| 942 | return NULL; |
| 943 | } |
| 944 | |
| 945 | static |
| 946 | struct lttng_condition *handle_condition_buffer_usage_low(int *argc, const char ***argv) |
| 947 | { |
| 948 | ERR("Low buffer usage threshold conditions are unsupported for the moment."); |
| 949 | return NULL; |
| 950 | } |
| 951 | |
| 952 | static |
| 953 | struct lttng_condition *handle_condition_session_rotation_ongoing(int *argc, const char ***argv) |
| 954 | { |
| 955 | ERR("Session rotation ongoing conditions are unsupported for the moment."); |
| 956 | return NULL; |
| 957 | } |
| 958 | |
| 959 | static |
| 960 | struct lttng_condition *handle_condition_session_rotation_completed(int *argc, const char ***argv) |
| 961 | { |
| 962 | ERR("Session rotation completed conditions are unsupported for the moment."); |
| 963 | return NULL; |
| 964 | } |
| 965 | |
| 966 | struct condition_descr { |
| 967 | const char *name; |
| 968 | struct lttng_condition *(*handler) (int *argc, const char ***argv); |
| 969 | }; |
| 970 | |
| 971 | static const |
| 972 | struct condition_descr condition_descrs[] = { |
| 973 | { "on-event", handle_condition_event }, |
| 974 | { "on-session-consumed-size", handle_condition_session_consumed_size }, |
| 975 | { "on-buffer-usage-high", handle_condition_buffer_usage_high }, |
| 976 | { "on-buffer-usage-low", handle_condition_buffer_usage_low }, |
| 977 | { "on-session-rotation-ongoing", handle_condition_session_rotation_ongoing }, |
| 978 | { "on-session-rotation-completed", handle_condition_session_rotation_completed }, |
| 979 | }; |
| 980 | |
| 981 | static |
| 982 | struct lttng_condition *parse_condition(int *argc, const char ***argv) |
| 983 | { |
| 984 | int i; |
| 985 | struct lttng_condition *cond; |
| 986 | const char *condition_name; |
| 987 | const struct condition_descr *descr = NULL; |
| 988 | |
| 989 | if (*argc == 0) { |
| 990 | ERR("Missing condition name."); |
| 991 | goto error; |
| 992 | } |
| 993 | |
| 994 | condition_name = (*argv)[0]; |
| 995 | |
| 996 | (*argc)--; |
| 997 | (*argv)++; |
| 998 | |
| 999 | for (i = 0; i < ARRAY_SIZE(condition_descrs); i++) { |
| 1000 | if (strcmp(condition_name, condition_descrs[i].name) == 0) { |
| 1001 | descr = &condition_descrs[i]; |
| 1002 | break; |
| 1003 | } |
| 1004 | } |
| 1005 | |
| 1006 | if (!descr) { |
| 1007 | ERR("Unknown condition name '%s'", condition_name); |
| 1008 | goto error; |
| 1009 | } |
| 1010 | |
| 1011 | cond = descr->handler(argc, argv); |
| 1012 | if (!cond) { |
| 1013 | /* The handler has already printed an error message. */ |
| 1014 | goto error; |
| 1015 | } |
| 1016 | |
| 1017 | goto end; |
| 1018 | error: |
| 1019 | cond = NULL; |
| 1020 | end: |
| 1021 | return cond; |
| 1022 | } |
| 1023 | |
| 1024 | |
| 1025 | static |
| 1026 | struct lttng_action *handle_action_notify(int *argc, const char ***argv) |
| 1027 | { |
| 1028 | return lttng_action_notify_create(); |
| 1029 | } |
| 1030 | |
| 1031 | static const struct argpar_opt_descr no_opt_descrs[] = { |
| 1032 | ARGPAR_OPT_DESCR_SENTINEL |
| 1033 | }; |
| 1034 | |
| 1035 | /* |
| 1036 | * Generic handler for a kind of action that takes a session name as its sole |
| 1037 | * argument. |
| 1038 | */ |
| 1039 | |
| 1040 | static |
| 1041 | struct lttng_action *handle_action_simple_session( |
| 1042 | int *argc, const char ***argv, |
| 1043 | struct lttng_action *(*create_action_cb)(void), |
| 1044 | enum lttng_action_status (*set_session_name_cb)(struct lttng_action *, const char *), |
| 1045 | const char *action_name) |
| 1046 | { |
| 1047 | struct lttng_action *action = NULL; |
| 1048 | struct argpar_state *state = NULL; |
| 1049 | struct argpar_item *item = NULL; |
| 1050 | const char *session_name_arg = NULL; |
| 1051 | char *error = NULL; |
| 1052 | enum lttng_action_status action_status; |
| 1053 | |
| 1054 | state = argpar_state_create(*argc, *argv, no_opt_descrs); |
| 1055 | if (!state) { |
| 1056 | ERR("Failed to allocate an argpar state."); |
| 1057 | goto error; |
| 1058 | } |
| 1059 | |
| 1060 | while (true) { |
| 1061 | enum argpar_state_parse_next_status status; |
| 1062 | const struct argpar_item_non_opt *item_non_opt; |
| 1063 | |
| 1064 | ARGPAR_ITEM_DESTROY_AND_RESET(item); |
| 1065 | status = argpar_state_parse_next(state, &item, &error); |
| 1066 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { |
| 1067 | ERR("%s", error); |
| 1068 | goto error; |
| 1069 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { |
| 1070 | /* Just stop parsing here. */ |
| 1071 | break; |
| 1072 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { |
| 1073 | break; |
| 1074 | } |
| 1075 | |
| 1076 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); |
| 1077 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); |
| 1078 | |
| 1079 | item_non_opt = (const struct argpar_item_non_opt *) item; |
| 1080 | |
| 1081 | switch (item_non_opt->non_opt_index) { |
| 1082 | case 0: |
| 1083 | session_name_arg = item_non_opt->arg; |
| 1084 | break; |
| 1085 | default: |
| 1086 | ERR("Unexpected argument `%s`.", item_non_opt->arg); |
| 1087 | goto error; |
| 1088 | } |
| 1089 | } |
| 1090 | |
| 1091 | *argc -= argpar_state_get_ingested_orig_args(state); |
| 1092 | *argv += argpar_state_get_ingested_orig_args(state); |
| 1093 | |
| 1094 | if (!session_name_arg) { |
| 1095 | ERR("Missing session name."); |
| 1096 | goto error; |
| 1097 | } |
| 1098 | |
| 1099 | action = create_action_cb(); |
| 1100 | if (!action) { |
| 1101 | ERR("Failed to allocate %s session action.", action_name); |
| 1102 | goto error; |
| 1103 | } |
| 1104 | |
| 1105 | action_status = set_session_name_cb(action, session_name_arg); |
| 1106 | if (action_status != LTTNG_ACTION_STATUS_OK) { |
| 1107 | ERR("Failed to set action %s session's session name to '%s'.", |
| 1108 | action_name, session_name_arg); |
| 1109 | goto error; |
| 1110 | } |
| 1111 | |
| 1112 | goto end; |
| 1113 | |
| 1114 | error: |
| 1115 | lttng_action_destroy(action); |
| 1116 | action = NULL; |
| 1117 | free(error); |
| 1118 | argpar_item_destroy(item); |
| 1119 | end: |
| 1120 | return action; |
| 1121 | } |
| 1122 | |
| 1123 | static |
| 1124 | struct lttng_action *handle_action_start_session(int *argc, |
| 1125 | const char ***argv) |
| 1126 | { |
| 1127 | return handle_action_simple_session(argc, argv, |
| 1128 | lttng_action_start_session_create, |
| 1129 | lttng_action_start_session_set_session_name, |
| 1130 | "start"); |
| 1131 | } |
| 1132 | |
| 1133 | static |
| 1134 | struct lttng_action *handle_action_stop_session(int *argc, |
| 1135 | const char ***argv) |
| 1136 | { |
| 1137 | return handle_action_simple_session(argc, argv, |
| 1138 | lttng_action_stop_session_create, |
| 1139 | lttng_action_stop_session_set_session_name, |
| 1140 | "stop"); |
| 1141 | } |
| 1142 | |
| 1143 | static |
| 1144 | struct lttng_action *handle_action_rotate_session(int *argc, |
| 1145 | const char ***argv) |
| 1146 | { |
| 1147 | return handle_action_simple_session(argc, argv, |
| 1148 | lttng_action_rotate_session_create, |
| 1149 | lttng_action_rotate_session_set_session_name, |
| 1150 | "rotate"); |
| 1151 | } |
| 1152 | |
| 1153 | static const struct argpar_opt_descr snapshot_action_opt_descrs[] = { |
| 1154 | { OPT_NAME, 'n', "name", true }, |
| 1155 | { OPT_MAX_SIZE, 'm', "max-size", true }, |
| 1156 | { OPT_CTRL_URL, '\0', "ctrl-url", true }, |
| 1157 | { OPT_DATA_URL, '\0', "data-url", true }, |
| 1158 | { OPT_URL, '\0', "url", true }, |
| 1159 | { OPT_PATH, '\0', "path", true }, |
| 1160 | ARGPAR_OPT_DESCR_SENTINEL |
| 1161 | }; |
| 1162 | |
| 1163 | static |
| 1164 | struct lttng_action *handle_action_snapshot_session(int *argc, |
| 1165 | const char ***argv) |
| 1166 | { |
| 1167 | struct lttng_action *action = NULL; |
| 1168 | struct argpar_state *state = NULL; |
| 1169 | struct argpar_item *item = NULL; |
| 1170 | const char *session_name_arg = NULL; |
| 1171 | char *snapshot_name_arg = NULL; |
| 1172 | char *ctrl_url_arg = NULL; |
| 1173 | char *data_url_arg = NULL; |
| 1174 | char *max_size_arg = NULL; |
| 1175 | char *url_arg = NULL; |
| 1176 | char *path_arg = NULL; |
| 1177 | char *error = NULL; |
| 1178 | enum lttng_action_status action_status; |
| 1179 | struct lttng_snapshot_output *snapshot_output = NULL; |
| 1180 | int ret; |
| 1181 | unsigned int locations_specified = 0; |
| 1182 | |
| 1183 | state = argpar_state_create(*argc, *argv, snapshot_action_opt_descrs); |
| 1184 | if (!state) { |
| 1185 | ERR("Failed to allocate an argpar state."); |
| 1186 | goto error; |
| 1187 | } |
| 1188 | |
| 1189 | while (true) { |
| 1190 | enum argpar_state_parse_next_status status; |
| 1191 | |
| 1192 | ARGPAR_ITEM_DESTROY_AND_RESET(item); |
| 1193 | status = argpar_state_parse_next(state, &item, &error); |
| 1194 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { |
| 1195 | ERR("%s", error); |
| 1196 | goto error; |
| 1197 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { |
| 1198 | /* Just stop parsing here. */ |
| 1199 | break; |
| 1200 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { |
| 1201 | break; |
| 1202 | } |
| 1203 | |
| 1204 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); |
| 1205 | |
| 1206 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { |
| 1207 | const struct argpar_item_opt *item_opt = |
| 1208 | (const struct argpar_item_opt *) item; |
| 1209 | |
| 1210 | switch (item_opt->descr->id) { |
| 1211 | case OPT_NAME: |
| 1212 | if (!assign_string(&snapshot_name_arg, item_opt->arg, "--name/-n")) { |
| 1213 | goto error; |
| 1214 | } |
| 1215 | |
| 1216 | break; |
| 1217 | case OPT_MAX_SIZE: |
| 1218 | if (!assign_string(&max_size_arg, item_opt->arg, "--max-size/-m")) { |
| 1219 | goto error; |
| 1220 | } |
| 1221 | |
| 1222 | break; |
| 1223 | case OPT_CTRL_URL: |
| 1224 | if (!assign_string(&ctrl_url_arg, item_opt->arg, "--ctrl-url")) { |
| 1225 | goto error; |
| 1226 | } |
| 1227 | |
| 1228 | break; |
| 1229 | case OPT_DATA_URL: |
| 1230 | if (!assign_string(&data_url_arg, item_opt->arg, "--data-url")) { |
| 1231 | goto error; |
| 1232 | } |
| 1233 | |
| 1234 | break; |
| 1235 | case OPT_URL: |
| 1236 | if (!assign_string(&url_arg, item_opt->arg, "--url")) { |
| 1237 | goto error; |
| 1238 | } |
| 1239 | |
| 1240 | break; |
| 1241 | case OPT_PATH: |
| 1242 | if (!assign_string(&path_arg, item_opt->arg, "--path")) { |
| 1243 | goto error; |
| 1244 | } |
| 1245 | |
| 1246 | break; |
| 1247 | default: |
| 1248 | abort(); |
| 1249 | } |
| 1250 | } else { |
| 1251 | const struct argpar_item_non_opt *item_non_opt; |
| 1252 | |
| 1253 | assert(item->type == ARGPAR_ITEM_TYPE_NON_OPT); |
| 1254 | |
| 1255 | item_non_opt = (const struct argpar_item_non_opt *) item; |
| 1256 | |
| 1257 | switch (item_non_opt->non_opt_index) { |
| 1258 | case 0: |
| 1259 | session_name_arg = item_non_opt->arg; |
| 1260 | break; |
| 1261 | default: |
| 1262 | ERR("Unexpected argument `%s`.", |
| 1263 | item_non_opt->arg); |
| 1264 | goto error; |
| 1265 | } |
| 1266 | } |
| 1267 | } |
| 1268 | |
| 1269 | *argc -= argpar_state_get_ingested_orig_args(state); |
| 1270 | *argv += argpar_state_get_ingested_orig_args(state); |
| 1271 | |
| 1272 | if (!session_name_arg) { |
| 1273 | ERR("Missing session name."); |
| 1274 | goto error; |
| 1275 | } |
| 1276 | |
| 1277 | /* --ctrl-url and --data-url must come in pair. */ |
| 1278 | if (ctrl_url_arg && !data_url_arg) { |
| 1279 | ERR("--ctrl-url is specified, but --data-url is missing."); |
| 1280 | goto error; |
| 1281 | } |
| 1282 | |
| 1283 | if (!ctrl_url_arg && data_url_arg) { |
| 1284 | ERR("--data-url is specified, but --ctrl-url is missing."); |
| 1285 | goto error; |
| 1286 | } |
| 1287 | |
| 1288 | locations_specified += !!(ctrl_url_arg || data_url_arg); |
| 1289 | locations_specified += !!url_arg; |
| 1290 | locations_specified += !!path_arg; |
| 1291 | |
| 1292 | /* --ctrl-url/--data-url, --url and --path are mutually exclusive. */ |
| 1293 | if (locations_specified > 1) { |
| 1294 | ERR("The --ctrl-url/--data-url, --url, and --path options can't be used together."); |
| 1295 | goto error; |
| 1296 | } |
| 1297 | |
| 1298 | /* |
| 1299 | * Did the user specify an option that implies using a |
| 1300 | * custom/unregistered output? |
| 1301 | */ |
| 1302 | if (url_arg || ctrl_url_arg || path_arg) { |
| 1303 | snapshot_output = lttng_snapshot_output_create(); |
| 1304 | if (!snapshot_output) { |
| 1305 | ERR("Failed to allocate a snapshot output."); |
| 1306 | goto error; |
| 1307 | } |
| 1308 | } |
| 1309 | |
| 1310 | action = lttng_action_snapshot_session_create(); |
| 1311 | if (!action) { |
| 1312 | ERR("Failed to allocate snapshot session action."); |
| 1313 | goto error; |
| 1314 | } |
| 1315 | |
| 1316 | action_status = lttng_action_snapshot_session_set_session_name( |
| 1317 | action, session_name_arg); |
| 1318 | if (action_status != LTTNG_ACTION_STATUS_OK) { |
| 1319 | ERR("Failed to set action snapshot session's session name to '%s'.", |
| 1320 | session_name_arg); |
| 1321 | goto error; |
| 1322 | } |
| 1323 | |
| 1324 | if (snapshot_name_arg) { |
| 1325 | if (!snapshot_output) { |
| 1326 | ERR("Can't provide a snapshot output name without a snapshot output destination."); |
| 1327 | goto error; |
| 1328 | } |
| 1329 | |
| 1330 | ret = lttng_snapshot_output_set_name( |
| 1331 | snapshot_name_arg, snapshot_output); |
| 1332 | if (ret != 0) { |
| 1333 | ERR("Failed to set name of snapshot output."); |
| 1334 | goto error; |
| 1335 | } |
| 1336 | } |
| 1337 | |
| 1338 | if (max_size_arg) { |
| 1339 | uint64_t max_size; |
| 1340 | |
| 1341 | if (!snapshot_output) { |
| 1342 | ERR("Can't provide a snapshot output max size without a snapshot output destination."); |
| 1343 | goto error; |
| 1344 | } |
| 1345 | |
| 1346 | ret = utils_parse_size_suffix(max_size_arg, &max_size); |
| 1347 | if (ret != 0) { |
| 1348 | ERR("Failed to parse `%s` as a size.", max_size_arg); |
| 1349 | goto error; |
| 1350 | } |
| 1351 | |
| 1352 | ret = lttng_snapshot_output_set_size(max_size, snapshot_output); |
| 1353 | if (ret != 0) { |
| 1354 | ERR("Failed to set snapshot output's max size to %" PRIu64 " bytes.", |
| 1355 | max_size); |
| 1356 | goto error; |
| 1357 | } |
| 1358 | } |
| 1359 | |
| 1360 | if (url_arg) { |
| 1361 | int num_uris; |
| 1362 | struct lttng_uri *uris; |
| 1363 | |
| 1364 | if (!strstr(url_arg, "://")) { |
| 1365 | ERR("Failed to parse '%s' as an URL.", url_arg); |
| 1366 | goto error; |
| 1367 | } |
| 1368 | |
| 1369 | num_uris = uri_parse_str_urls(url_arg, NULL, &uris); |
| 1370 | if (num_uris < 1) { |
| 1371 | ERR("Failed to parse '%s' as an URL.", url_arg); |
| 1372 | goto error; |
| 1373 | } |
| 1374 | |
| 1375 | if (uris[0].dtype == LTTNG_DST_PATH) { |
| 1376 | ret = lttng_snapshot_output_set_local_path( |
| 1377 | uris[0].dst.path, snapshot_output); |
| 1378 | free(uris); |
| 1379 | if (ret != 0) { |
| 1380 | ERR("Failed to assign '%s' as a local destination.", |
| 1381 | url_arg); |
| 1382 | goto error; |
| 1383 | } |
| 1384 | } else { |
| 1385 | ret = lttng_snapshot_output_set_network_url( |
| 1386 | url_arg, snapshot_output); |
| 1387 | free(uris); |
| 1388 | if (ret != 0) { |
| 1389 | ERR("Failed to assign '%s' as a network URL.", |
| 1390 | url_arg); |
| 1391 | goto error; |
| 1392 | } |
| 1393 | } |
| 1394 | } |
| 1395 | |
| 1396 | if (path_arg) { |
| 1397 | ret = lttng_snapshot_output_set_local_path( |
| 1398 | path_arg, snapshot_output); |
| 1399 | if (ret != 0) { |
| 1400 | ERR("Failed to parse '%s' as a local path.", path_arg); |
| 1401 | goto error; |
| 1402 | } |
| 1403 | } |
| 1404 | |
| 1405 | if (ctrl_url_arg) { |
| 1406 | /* |
| 1407 | * Two argument form, network output with separate control and |
| 1408 | * data URLs. |
| 1409 | */ |
| 1410 | ret = lttng_snapshot_output_set_network_urls( |
| 1411 | ctrl_url_arg, data_url_arg, snapshot_output); |
| 1412 | if (ret != 0) { |
| 1413 | ERR("Failed to parse `%s` and `%s` as control and data URLs.", |
| 1414 | ctrl_url_arg, data_url_arg); |
| 1415 | goto error; |
| 1416 | } |
| 1417 | } |
| 1418 | |
| 1419 | if (snapshot_output) { |
| 1420 | action_status = lttng_action_snapshot_session_set_output( |
| 1421 | action, snapshot_output); |
| 1422 | if (action_status != LTTNG_ACTION_STATUS_OK) { |
| 1423 | ERR("Failed to set snapshot session action's output."); |
| 1424 | goto error; |
| 1425 | } |
| 1426 | |
| 1427 | /* Ownership of `snapshot_output` has been transferred to the action. */ |
| 1428 | snapshot_output = NULL; |
| 1429 | } |
| 1430 | |
| 1431 | goto end; |
| 1432 | |
| 1433 | error: |
| 1434 | lttng_action_destroy(action); |
| 1435 | action = NULL; |
| 1436 | free(error); |
| 1437 | end: |
| 1438 | free(snapshot_name_arg); |
| 1439 | free(path_arg); |
| 1440 | free(url_arg); |
| 1441 | free(ctrl_url_arg); |
| 1442 | free(data_url_arg); |
| 1443 | free(snapshot_output); |
| 1444 | free(max_size_arg); |
| 1445 | argpar_state_destroy(state); |
| 1446 | argpar_item_destroy(item); |
| 1447 | return action; |
| 1448 | } |
| 1449 | |
| 1450 | struct action_descr { |
| 1451 | const char *name; |
| 1452 | struct lttng_action *(*handler) (int *argc, const char ***argv); |
| 1453 | }; |
| 1454 | |
| 1455 | static const |
| 1456 | struct action_descr action_descrs[] = { |
| 1457 | { "notify", handle_action_notify }, |
| 1458 | { "start-session", handle_action_start_session }, |
| 1459 | { "stop-session", handle_action_stop_session }, |
| 1460 | { "rotate-session", handle_action_rotate_session }, |
| 1461 | { "snapshot-session", handle_action_snapshot_session }, |
| 1462 | }; |
| 1463 | |
| 1464 | static |
| 1465 | struct lttng_action *parse_action(int *argc, const char ***argv) |
| 1466 | { |
| 1467 | int i; |
| 1468 | struct lttng_action *action; |
| 1469 | const char *action_name; |
| 1470 | const struct action_descr *descr = NULL; |
| 1471 | |
| 1472 | if (*argc == 0) { |
| 1473 | ERR("Missing action name."); |
| 1474 | goto error; |
| 1475 | } |
| 1476 | |
| 1477 | action_name = (*argv)[0]; |
| 1478 | |
| 1479 | (*argc)--; |
| 1480 | (*argv)++; |
| 1481 | |
| 1482 | for (i = 0; i < ARRAY_SIZE(action_descrs); i++) { |
| 1483 | if (strcmp(action_name, action_descrs[i].name) == 0) { |
| 1484 | descr = &action_descrs[i]; |
| 1485 | break; |
| 1486 | } |
| 1487 | } |
| 1488 | |
| 1489 | if (!descr) { |
| 1490 | ERR("Unknown action name: %s", action_name); |
| 1491 | goto error; |
| 1492 | } |
| 1493 | |
| 1494 | action = descr->handler(argc, argv); |
| 1495 | if (!action) { |
| 1496 | /* The handler has already printed an error message. */ |
| 1497 | goto error; |
| 1498 | } |
| 1499 | |
| 1500 | goto end; |
| 1501 | error: |
| 1502 | action = NULL; |
| 1503 | end: |
| 1504 | return action; |
| 1505 | } |
| 1506 | |
| 1507 | static const |
| 1508 | struct argpar_opt_descr add_trigger_options[] = { |
| 1509 | { OPT_HELP, 'h', "help", false }, |
| 1510 | { OPT_LIST_OPTIONS, '\0', "list-options", false }, |
| 1511 | { OPT_CONDITION, '\0', "condition", false }, |
| 1512 | { OPT_ACTION, '\0', "action", false }, |
| 1513 | { OPT_ID, '\0', "id", true }, |
| 1514 | { OPT_FIRE_ONCE_AFTER, '\0', "fire-once-after", true }, |
| 1515 | { OPT_FIRE_EVERY, '\0', "fire-every", true }, |
| 1516 | { OPT_USER_ID, '\0', "user-id", true }, |
| 1517 | ARGPAR_OPT_DESCR_SENTINEL, |
| 1518 | }; |
| 1519 | |
| 1520 | static |
| 1521 | void lttng_actions_destructor(void *p) |
| 1522 | { |
| 1523 | struct lttng_action *action = p; |
| 1524 | |
| 1525 | lttng_action_destroy(action); |
| 1526 | } |
| 1527 | |
| 1528 | int cmd_add_trigger(int argc, const char **argv) |
| 1529 | { |
| 1530 | int ret; |
| 1531 | int my_argc = argc - 1; |
| 1532 | const char **my_argv = argv + 1; |
| 1533 | struct lttng_condition *condition = NULL; |
| 1534 | struct lttng_dynamic_pointer_array actions; |
| 1535 | struct argpar_state *argpar_state = NULL; |
| 1536 | struct argpar_item *argpar_item = NULL; |
| 1537 | struct lttng_action *action_group = NULL; |
| 1538 | struct lttng_action *action = NULL; |
| 1539 | struct lttng_trigger *trigger = NULL; |
| 1540 | char *error = NULL; |
| 1541 | char *id = NULL; |
| 1542 | int i; |
| 1543 | char *fire_once_after_str = NULL; |
| 1544 | char *fire_every_str = NULL; |
| 1545 | char *user_id = NULL; |
| 1546 | |
| 1547 | lttng_dynamic_pointer_array_init(&actions, lttng_actions_destructor); |
| 1548 | |
| 1549 | while (true) { |
| 1550 | enum argpar_state_parse_next_status status; |
| 1551 | const struct argpar_item_opt *item_opt; |
| 1552 | int ingested_args; |
| 1553 | |
| 1554 | argpar_state_destroy(argpar_state); |
| 1555 | argpar_state = argpar_state_create(my_argc, my_argv, |
| 1556 | add_trigger_options); |
| 1557 | if (!argpar_state) { |
| 1558 | ERR("Failed to create argpar state."); |
| 1559 | goto error; |
| 1560 | } |
| 1561 | |
| 1562 | ARGPAR_ITEM_DESTROY_AND_RESET(argpar_item); |
| 1563 | status = argpar_state_parse_next(argpar_state, &argpar_item, &error); |
| 1564 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { |
| 1565 | ERR("%s", error); |
| 1566 | goto error; |
| 1567 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { |
| 1568 | ERR("%s", error); |
| 1569 | goto error; |
| 1570 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { |
| 1571 | break; |
| 1572 | } |
| 1573 | |
| 1574 | assert(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); |
| 1575 | |
| 1576 | if (argpar_item->type == ARGPAR_ITEM_TYPE_NON_OPT) { |
| 1577 | const struct argpar_item_non_opt *item_non_opt = |
| 1578 | (const struct argpar_item_non_opt *) |
| 1579 | argpar_item; |
| 1580 | |
| 1581 | ERR("Unexpected argument `%s`.", item_non_opt->arg); |
| 1582 | goto error; |
| 1583 | } |
| 1584 | |
| 1585 | item_opt = (const struct argpar_item_opt *) argpar_item; |
| 1586 | |
| 1587 | ingested_args = argpar_state_get_ingested_orig_args( |
| 1588 | argpar_state); |
| 1589 | |
| 1590 | my_argc -= ingested_args; |
| 1591 | my_argv += ingested_args; |
| 1592 | |
| 1593 | switch (item_opt->descr->id) { |
| 1594 | case OPT_HELP: |
| 1595 | SHOW_HELP(); |
| 1596 | ret = 0; |
| 1597 | goto end; |
| 1598 | case OPT_LIST_OPTIONS: |
| 1599 | list_cmd_options_argpar(stdout, add_trigger_options); |
| 1600 | ret = 0; |
| 1601 | goto end; |
| 1602 | case OPT_CONDITION: |
| 1603 | { |
| 1604 | if (condition) { |
| 1605 | ERR("A --condition was already given."); |
| 1606 | goto error; |
| 1607 | } |
| 1608 | |
| 1609 | condition = parse_condition(&my_argc, &my_argv); |
| 1610 | if (!condition) { |
| 1611 | /* |
| 1612 | * An error message was already printed by |
| 1613 | * parse_condition. |
| 1614 | */ |
| 1615 | goto error; |
| 1616 | } |
| 1617 | |
| 1618 | break; |
| 1619 | } |
| 1620 | case OPT_ACTION: |
| 1621 | { |
| 1622 | action = parse_action(&my_argc, &my_argv); |
| 1623 | if (!action) { |
| 1624 | /* |
| 1625 | * An error message was already printed by |
| 1626 | * parse_condition. |
| 1627 | */ |
| 1628 | goto error; |
| 1629 | } |
| 1630 | |
| 1631 | ret = lttng_dynamic_pointer_array_add_pointer( |
| 1632 | &actions, action); |
| 1633 | if (ret) { |
| 1634 | ERR("Failed to add pointer to pointer array."); |
| 1635 | goto error; |
| 1636 | } |
| 1637 | |
| 1638 | /* Ownership of the action was transferred to the group. */ |
| 1639 | action = NULL; |
| 1640 | |
| 1641 | break; |
| 1642 | } |
| 1643 | case OPT_ID: |
| 1644 | { |
| 1645 | if (!assign_string(&id, item_opt->arg, "--id")) { |
| 1646 | goto error; |
| 1647 | } |
| 1648 | |
| 1649 | break; |
| 1650 | } |
| 1651 | case OPT_FIRE_ONCE_AFTER: |
| 1652 | { |
| 1653 | if (!assign_string(&fire_once_after_str, item_opt->arg, |
| 1654 | "--fire-once-after")) { |
| 1655 | goto error; |
| 1656 | } |
| 1657 | |
| 1658 | break; |
| 1659 | } |
| 1660 | case OPT_FIRE_EVERY: |
| 1661 | { |
| 1662 | if (!assign_string(&fire_every_str, item_opt->arg, |
| 1663 | "--fire-every")) { |
| 1664 | goto error; |
| 1665 | } |
| 1666 | |
| 1667 | break; |
| 1668 | } |
| 1669 | case OPT_USER_ID: |
| 1670 | { |
| 1671 | if (!assign_string(&user_id, item_opt->arg, |
| 1672 | "--user-id")) { |
| 1673 | goto error; |
| 1674 | } |
| 1675 | |
| 1676 | break; |
| 1677 | } |
| 1678 | default: |
| 1679 | abort(); |
| 1680 | } |
| 1681 | } |
| 1682 | |
| 1683 | if (!condition) { |
| 1684 | ERR("Missing --condition."); |
| 1685 | goto error; |
| 1686 | } |
| 1687 | |
| 1688 | if (lttng_dynamic_pointer_array_get_count(&actions) == 0) { |
| 1689 | ERR("Need at least one --action."); |
| 1690 | goto error; |
| 1691 | } |
| 1692 | |
| 1693 | if (fire_every_str && fire_once_after_str) { |
| 1694 | ERR("Can't specify both --fire-once-after and --fire-every."); |
| 1695 | goto error; |
| 1696 | } |
| 1697 | |
| 1698 | action_group = lttng_action_group_create(); |
| 1699 | if (!action_group) { |
| 1700 | goto error; |
| 1701 | } |
| 1702 | |
| 1703 | for (i = 0; i < lttng_dynamic_pointer_array_get_count(&actions); i++) { |
| 1704 | enum lttng_action_status status; |
| 1705 | |
| 1706 | action = lttng_dynamic_pointer_array_steal_pointer(&actions, i); |
| 1707 | |
| 1708 | status = lttng_action_group_add_action(action_group, action); |
| 1709 | if (status != LTTNG_ACTION_STATUS_OK) { |
| 1710 | goto error; |
| 1711 | } |
| 1712 | |
| 1713 | /* |
| 1714 | * The `lttng_action_group_add_action()` takes a reference to |
| 1715 | * the action. We can destroy ours. |
| 1716 | */ |
| 1717 | lttng_action_destroy(action); |
| 1718 | action = NULL; |
| 1719 | } |
| 1720 | |
| 1721 | trigger = lttng_trigger_create(condition, action_group); |
| 1722 | if (!trigger) { |
| 1723 | goto error; |
| 1724 | } |
| 1725 | |
| 1726 | if (id) { |
| 1727 | enum lttng_trigger_status trigger_status = |
| 1728 | lttng_trigger_set_name(trigger, id); |
| 1729 | |
| 1730 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { |
| 1731 | ERR("Failed to set trigger id."); |
| 1732 | goto error; |
| 1733 | } |
| 1734 | } |
| 1735 | |
| 1736 | if (fire_once_after_str) { |
| 1737 | unsigned long long threshold; |
| 1738 | enum lttng_trigger_status trigger_status; |
| 1739 | |
| 1740 | if (utils_parse_unsigned_long_long(fire_once_after_str, &threshold) != 0) { |
| 1741 | ERR("Failed to parse `%s` as an integer.", fire_once_after_str); |
| 1742 | goto error; |
| 1743 | } |
| 1744 | |
| 1745 | trigger_status = lttng_trigger_set_firing_policy(trigger, |
| 1746 | LTTNG_TRIGGER_FIRING_POLICY_ONCE_AFTER_N, |
| 1747 | threshold); |
| 1748 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { |
| 1749 | ERR("Failed to set trigger's policy to `fire once after N`."); |
| 1750 | goto error; |
| 1751 | } |
| 1752 | } |
| 1753 | |
| 1754 | if (fire_every_str) { |
| 1755 | unsigned long long threshold; |
| 1756 | enum lttng_trigger_status trigger_status; |
| 1757 | |
| 1758 | if (utils_parse_unsigned_long_long(fire_every_str, &threshold) != 0) { |
| 1759 | ERR("Failed to parse `%s` as an integer.", fire_every_str); |
| 1760 | goto error; |
| 1761 | } |
| 1762 | |
| 1763 | trigger_status = lttng_trigger_set_firing_policy(trigger, |
| 1764 | LTTNG_TRIGGER_FIRING_POLICY_EVERY_N, threshold); |
| 1765 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { |
| 1766 | ERR("Failed to set trigger's policy to `fire every N`."); |
| 1767 | goto error; |
| 1768 | } |
| 1769 | } |
| 1770 | |
| 1771 | if (user_id) { |
| 1772 | enum lttng_trigger_status trigger_status; |
| 1773 | char *end; |
| 1774 | long long uid; |
| 1775 | |
| 1776 | errno = 0; |
| 1777 | uid = strtol(user_id, &end, 10); |
| 1778 | if (end == user_id || *end != '\0' || errno != 0) { |
| 1779 | ERR("Failed to parse `%s` as a user id.", user_id); |
| 1780 | } |
| 1781 | |
| 1782 | trigger_status = lttng_trigger_set_owner_uid(trigger, uid); |
| 1783 | if (trigger_status != LTTNG_TRIGGER_STATUS_OK) { |
| 1784 | ERR("Failed to set trigger's user identity."); |
| 1785 | goto error; |
| 1786 | } |
| 1787 | } |
| 1788 | |
| 1789 | ret = lttng_register_trigger(trigger); |
| 1790 | if (ret) { |
| 1791 | ERR("Failed to register trigger: %s.", lttng_strerror(ret)); |
| 1792 | goto error; |
| 1793 | } |
| 1794 | |
| 1795 | MSG("Trigger registered successfully."); |
| 1796 | |
| 1797 | goto end; |
| 1798 | |
| 1799 | error: |
| 1800 | ret = 1; |
| 1801 | |
| 1802 | end: |
| 1803 | argpar_state_destroy(argpar_state); |
| 1804 | argpar_item_destroy(argpar_item); |
| 1805 | lttng_dynamic_pointer_array_reset(&actions); |
| 1806 | lttng_condition_destroy(condition); |
| 1807 | lttng_action_destroy(action_group); |
| 1808 | lttng_action_destroy(action); |
| 1809 | lttng_trigger_destroy(trigger); |
| 1810 | free(error); |
| 1811 | free(id); |
| 1812 | free(fire_once_after_str); |
| 1813 | free(fire_every_str); |
| 1814 | free(user_id); |
| 1815 | return ret; |
| 1816 | } |