| 1 | /* |
| 2 | * Copyright (C) 2014 - Jonathan Rajotte <jonathan.r.julien@gmail.com> |
| 3 | * - Olivier Cotte <olivier.cotte@polymtl.ca> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License, version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along with |
| 15 | * this program; if not, write to the Free Software Foundation, Inc., 51 |
| 16 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 17 | */ |
| 18 | |
| 19 | |
| 20 | #include <include/config.h> |
| 21 | #include <common/config/config.h> |
| 22 | #include "mi-lttng.h" |
| 23 | |
| 24 | #include <assert.h> |
| 25 | |
| 26 | /* Strings related to command */ |
| 27 | const char * const mi_lttng_element_command = "command"; |
| 28 | const char * const mi_lttng_element_command_version = "version"; |
| 29 | const char * const mi_lttng_element_command_list = "list"; |
| 30 | const char * const mi_lttng_element_command_name = "name"; |
| 31 | const char * const mi_lttng_element_command_output = "output"; |
| 32 | |
| 33 | /* Strings related to command: version */ |
| 34 | const char * const mi_lttng_element_version = "version"; |
| 35 | const char * const mi_lttng_element_version_str = "string"; |
| 36 | const char * const mi_lttng_element_version_web = "url"; |
| 37 | const char * const mi_lttng_element_version_major = "major"; |
| 38 | const char * const mi_lttng_element_version_minor = "minor"; |
| 39 | const char * const mi_lttng_element_version_commit = "commit"; |
| 40 | const char * const mi_lttng_element_version_license = "license"; |
| 41 | const char * const mi_lttng_element_version_patch_level = "patchLevel"; |
| 42 | const char * const mi_lttng_element_version_description = "description"; |
| 43 | |
| 44 | /* Strings related to pid */ |
| 45 | const char * const mi_lttng_element_pids = "pids"; |
| 46 | const char * const mi_lttng_element_pid = "pid"; |
| 47 | const char * const mi_lttng_element_pid_id = "id"; |
| 48 | |
| 49 | /* String related to a lttng_event_field */ |
| 50 | const char * const mi_lttng_element_event_field = "event_field"; |
| 51 | const char * const mi_lttng_element_event_fields = "event_fields"; |
| 52 | |
| 53 | /* General elements of mi_lttng */ |
| 54 | const char * const mi_lttng_element_type_other = "OTHER"; |
| 55 | const char * const mi_lttng_element_type_integer = "INTEGER"; |
| 56 | const char * const mi_lttng_element_type_enum = "ENUM"; |
| 57 | const char * const mi_lttng_element_type_float = "FLOAT"; |
| 58 | const char * const mi_lttng_element_type_string = "STRING"; |
| 59 | const char * const mi_lttng_element_nowrite = "nowrite"; |
| 60 | |
| 61 | /* String related to loglevel */ |
| 62 | const char * const mi_lttng_loglevel_str_alert = "TRACE_ALERT"; |
| 63 | const char * const mi_lttng_loglevel_str_crit = "TRACE_CRIT"; |
| 64 | const char * const mi_lttng_loglevel_str_debug = "TRACE_DEBUG"; |
| 65 | const char * const mi_lttng_loglevel_str_debug_function = "TRACE_DEBUG_FUNCTION"; |
| 66 | const char * const mi_lttng_loglevel_str_debug_line = "TRACE_DEBUG_LINE"; |
| 67 | const char * const mi_lttng_loglevel_str_debug_module = "TRACE_DEBUG_MODULE"; |
| 68 | const char * const mi_lttng_loglevel_str_debug_process = "TRACE_DEBUG_PROCESS"; |
| 69 | const char * const mi_lttng_loglevel_str_debug_program = "TRACE_DEBUG_PROGRAM"; |
| 70 | const char * const mi_lttng_loglevel_str_debug_system = "TRACE_DEBUG_SYSTEM"; |
| 71 | const char * const mi_lttng_loglevel_str_debug_unit = "TRACE_DEBUG_UNIT"; |
| 72 | const char * const mi_lttng_loglevel_str_emerg = "TRACE_EMERG"; |
| 73 | const char * const mi_lttng_loglevel_str_err = "TRACE_ERR"; |
| 74 | const char * const mi_lttng_loglevel_str_info = "TRACE_INFO"; |
| 75 | const char * const mi_lttng_loglevel_str_notice = "TRACE_NOTICE"; |
| 76 | const char * const mi_lttng_loglevel_str_unknown = "UNKNOWN"; |
| 77 | const char * const mi_lttng_loglevel_str_warning = "TRACE_WARNING"; |
| 78 | |
| 79 | const char * const mi_lttng_loglevel_type_all = "ALL"; |
| 80 | const char * const mi_lttng_loglevel_type_range = "RANGE"; |
| 81 | const char * const mi_lttng_loglevel_type_single = "SINGLE"; |
| 82 | const char * const mi_lttng_loglevel_type_unknown = "UNKNOWN"; |
| 83 | |
| 84 | const char * const mi_lttng_element_empty = ""; |
| 85 | |
| 86 | const char *mi_lttng_loglevel_string(int value) |
| 87 | { |
| 88 | switch (value) { |
| 89 | case -1: |
| 90 | return mi_lttng_element_empty; |
| 91 | case LTTNG_LOGLEVEL_EMERG: |
| 92 | return mi_lttng_loglevel_str_emerg; |
| 93 | case LTTNG_LOGLEVEL_ALERT: |
| 94 | return mi_lttng_loglevel_str_alert; |
| 95 | case LTTNG_LOGLEVEL_CRIT: |
| 96 | return mi_lttng_loglevel_str_crit; |
| 97 | case LTTNG_LOGLEVEL_ERR: |
| 98 | return mi_lttng_loglevel_str_err; |
| 99 | case LTTNG_LOGLEVEL_WARNING: |
| 100 | return mi_lttng_loglevel_str_warning; |
| 101 | case LTTNG_LOGLEVEL_NOTICE: |
| 102 | return mi_lttng_loglevel_str_notice; |
| 103 | case LTTNG_LOGLEVEL_INFO: |
| 104 | return mi_lttng_loglevel_str_info; |
| 105 | case LTTNG_LOGLEVEL_DEBUG_SYSTEM: |
| 106 | return mi_lttng_loglevel_str_debug_system; |
| 107 | case LTTNG_LOGLEVEL_DEBUG_PROGRAM: |
| 108 | return mi_lttng_loglevel_str_debug_program; |
| 109 | case LTTNG_LOGLEVEL_DEBUG_PROCESS: |
| 110 | return mi_lttng_loglevel_str_debug_process; |
| 111 | case LTTNG_LOGLEVEL_DEBUG_MODULE: |
| 112 | return mi_lttng_loglevel_str_debug_module; |
| 113 | case LTTNG_LOGLEVEL_DEBUG_UNIT: |
| 114 | return mi_lttng_loglevel_str_debug_unit; |
| 115 | case LTTNG_LOGLEVEL_DEBUG_FUNCTION: |
| 116 | return mi_lttng_loglevel_str_debug_function; |
| 117 | case LTTNG_LOGLEVEL_DEBUG_LINE: |
| 118 | return mi_lttng_loglevel_str_debug_line; |
| 119 | case LTTNG_LOGLEVEL_DEBUG: |
| 120 | return mi_lttng_loglevel_str_debug; |
| 121 | default: |
| 122 | return mi_lttng_loglevel_str_unknown; |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | const char *mi_lttng_logleveltype_string(enum lttng_loglevel_type value) |
| 127 | { |
| 128 | switch (value) { |
| 129 | case LTTNG_EVENT_LOGLEVEL_ALL: |
| 130 | return mi_lttng_loglevel_type_all; |
| 131 | case LTTNG_EVENT_LOGLEVEL_RANGE: |
| 132 | return mi_lttng_loglevel_type_range; |
| 133 | case LTTNG_EVENT_LOGLEVEL_SINGLE: |
| 134 | return mi_lttng_loglevel_type_single; |
| 135 | default: |
| 136 | return mi_lttng_loglevel_type_unknown; |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | const char *mi_lttng_eventtype_string(enum lttng_event_type value) |
| 141 | { |
| 142 | switch (value) { |
| 143 | case LTTNG_EVENT_ALL: |
| 144 | return config_event_type_all; |
| 145 | case LTTNG_EVENT_TRACEPOINT: |
| 146 | return config_event_type_tracepoint; |
| 147 | case LTTNG_EVENT_PROBE: |
| 148 | return config_event_type_probe; |
| 149 | case LTTNG_EVENT_FUNCTION: |
| 150 | return config_event_type_function; |
| 151 | case LTTNG_EVENT_FUNCTION_ENTRY: |
| 152 | return config_event_type_function_entry; |
| 153 | case LTTNG_EVENT_SYSCALL: |
| 154 | return config_event_type_syscall; |
| 155 | case LTTNG_EVENT_NOOP: |
| 156 | return config_event_type_noop; |
| 157 | default: |
| 158 | return mi_lttng_element_empty; |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | const char *mi_lttng_eventfieldtype_string(enum lttng_event_field_type val) |
| 163 | { |
| 164 | switch (val) { |
| 165 | case(LTTNG_EVENT_FIELD_INTEGER): |
| 166 | return mi_lttng_element_type_integer; |
| 167 | case(LTTNG_EVENT_FIELD_ENUM): |
| 168 | return mi_lttng_element_type_enum; |
| 169 | case(LTTNG_EVENT_FIELD_FLOAT): |
| 170 | return mi_lttng_element_type_float; |
| 171 | case(LTTNG_EVENT_FIELD_STRING): |
| 172 | return mi_lttng_element_type_string; |
| 173 | default: |
| 174 | return mi_lttng_element_type_other; |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | const char *mi_lttng_domaintype_string(enum lttng_domain_type value) |
| 179 | { |
| 180 | /* Note: This is a *duplicate* of get_domain_str from bin/lttng/utils.c */ |
| 181 | switch (value) { |
| 182 | case LTTNG_DOMAIN_KERNEL: |
| 183 | return config_domain_type_kernel; |
| 184 | case LTTNG_DOMAIN_UST: |
| 185 | return config_domain_type_ust; |
| 186 | case LTTNG_DOMAIN_JUL: |
| 187 | return config_domain_type_jul; |
| 188 | default: |
| 189 | /* Should not have an unknown domain */ |
| 190 | assert(0); |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | const char *mi_lttng_buffertype_string(enum lttng_buffer_type value) |
| 195 | { |
| 196 | switch (value) { |
| 197 | case LTTNG_BUFFER_PER_PID: |
| 198 | return config_buffer_type_per_pid; |
| 199 | case LTTNG_BUFFER_PER_UID: |
| 200 | return config_buffer_type_per_uid; |
| 201 | case LTTNG_BUFFER_GLOBAL: |
| 202 | return config_buffer_type_global; |
| 203 | default: |
| 204 | /* Should not have an unknow buffer type */ |
| 205 | assert(0); |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | LTTNG_HIDDEN |
| 210 | struct mi_writer *mi_lttng_writer_create(int fd_output, int mi_output_type) |
| 211 | { |
| 212 | struct mi_writer *mi_writer; |
| 213 | |
| 214 | mi_writer = zmalloc(sizeof(struct mi_writer)); |
| 215 | if (!mi_writer) { |
| 216 | PERROR("zmalloc mi_writer_create"); |
| 217 | goto end; |
| 218 | } |
| 219 | if (mi_output_type == LTTNG_MI_XML) { |
| 220 | mi_writer->writer = config_writer_create(fd_output); |
| 221 | if (!mi_writer->writer) { |
| 222 | goto err_destroy; |
| 223 | } |
| 224 | mi_writer->type = LTTNG_MI_XML; |
| 225 | } else { |
| 226 | goto err_destroy; |
| 227 | } |
| 228 | |
| 229 | end: |
| 230 | return mi_writer; |
| 231 | |
| 232 | err_destroy: |
| 233 | free(mi_writer); |
| 234 | return NULL; |
| 235 | } |
| 236 | |
| 237 | LTTNG_HIDDEN |
| 238 | int mi_lttng_writer_destroy(struct mi_writer *writer) |
| 239 | { |
| 240 | int ret; |
| 241 | |
| 242 | if (!writer) { |
| 243 | ret = -EINVAL; |
| 244 | goto end; |
| 245 | } |
| 246 | |
| 247 | ret = config_writer_destroy(writer->writer); |
| 248 | if (ret < 0) { |
| 249 | goto end; |
| 250 | } |
| 251 | |
| 252 | free(writer); |
| 253 | end: |
| 254 | return ret; |
| 255 | } |
| 256 | |
| 257 | LTTNG_HIDDEN |
| 258 | int mi_lttng_writer_command_open(struct mi_writer *writer, const char *command) |
| 259 | { |
| 260 | int ret; |
| 261 | |
| 262 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_command); |
| 263 | if (ret) { |
| 264 | goto end; |
| 265 | } |
| 266 | ret = mi_lttng_writer_write_element_string(writer, |
| 267 | mi_lttng_element_command_name, command); |
| 268 | end: |
| 269 | return ret; |
| 270 | } |
| 271 | |
| 272 | LTTNG_HIDDEN |
| 273 | int mi_lttng_writer_command_close(struct mi_writer *writer) |
| 274 | { |
| 275 | return mi_lttng_writer_close_element(writer); |
| 276 | } |
| 277 | |
| 278 | LTTNG_HIDDEN |
| 279 | int mi_lttng_writer_open_element(struct mi_writer *writer, |
| 280 | const char *element_name) |
| 281 | { |
| 282 | return config_writer_open_element(writer->writer, element_name); |
| 283 | } |
| 284 | |
| 285 | LTTNG_HIDDEN |
| 286 | int mi_lttng_writer_close_element(struct mi_writer *writer) |
| 287 | { |
| 288 | return config_writer_close_element(writer->writer); |
| 289 | } |
| 290 | |
| 291 | LTTNG_HIDDEN |
| 292 | int mi_lttng_close_multi_element(struct mi_writer *writer, |
| 293 | unsigned int nb_element) |
| 294 | { |
| 295 | int ret, i; |
| 296 | |
| 297 | if (nb_element < 1) { |
| 298 | ret = 0; |
| 299 | goto end; |
| 300 | } |
| 301 | for (i = 0; i < nb_element; i++) { |
| 302 | ret = mi_lttng_writer_close_element(writer); |
| 303 | if (ret) { |
| 304 | goto end; |
| 305 | } |
| 306 | } |
| 307 | end: |
| 308 | return ret; |
| 309 | } |
| 310 | |
| 311 | LTTNG_HIDDEN |
| 312 | int mi_lttng_writer_write_element_unsigned_int(struct mi_writer *writer, |
| 313 | const char *element_name, uint64_t value) |
| 314 | { |
| 315 | return config_writer_write_element_unsigned_int(writer->writer, |
| 316 | element_name, value); |
| 317 | } |
| 318 | |
| 319 | LTTNG_HIDDEN |
| 320 | int mi_lttng_writer_write_element_signed_int(struct mi_writer *writer, |
| 321 | const char *element_name, int64_t value) |
| 322 | { |
| 323 | return config_writer_write_element_signed_int(writer->writer, |
| 324 | element_name, value); |
| 325 | } |
| 326 | |
| 327 | LTTNG_HIDDEN |
| 328 | int mi_lttng_writer_write_element_bool(struct mi_writer *writer, |
| 329 | const char *element_name, int value) |
| 330 | { |
| 331 | return config_writer_write_element_bool(writer->writer, |
| 332 | element_name, value); |
| 333 | } |
| 334 | |
| 335 | LTTNG_HIDDEN |
| 336 | int mi_lttng_writer_write_element_string(struct mi_writer *writer, |
| 337 | const char *element_name, const char *value) |
| 338 | { |
| 339 | return config_writer_write_element_string(writer->writer, |
| 340 | element_name, value); |
| 341 | } |
| 342 | |
| 343 | LTTNG_HIDDEN |
| 344 | int mi_lttng_version(struct mi_writer *writer, struct mi_lttng_version *version, |
| 345 | const char *lttng_description, const char *lttng_license) |
| 346 | { |
| 347 | int ret; |
| 348 | |
| 349 | /* Open version */ |
| 350 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_version); |
| 351 | if (ret) { |
| 352 | goto end; |
| 353 | } |
| 354 | |
| 355 | /* Version string (contain info like rc etc.) */ |
| 356 | ret = mi_lttng_writer_write_element_string(writer, |
| 357 | mi_lttng_element_version_str, VERSION); |
| 358 | if (ret) { |
| 359 | goto end; |
| 360 | } |
| 361 | |
| 362 | /* Major version number */ |
| 363 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
| 364 | mi_lttng_element_version_major, version->version_major); |
| 365 | if (ret) { |
| 366 | goto end; |
| 367 | } |
| 368 | |
| 369 | /* Minor version number */ |
| 370 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
| 371 | mi_lttng_element_version_minor, version->version_minor); |
| 372 | if (ret) { |
| 373 | goto end; |
| 374 | } |
| 375 | |
| 376 | /* Commit version number */ |
| 377 | ret = mi_lttng_writer_write_element_string(writer, |
| 378 | mi_lttng_element_version_commit, version->version_commit); |
| 379 | if (ret) { |
| 380 | goto end; |
| 381 | } |
| 382 | |
| 383 | /* Patch number */ |
| 384 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
| 385 | mi_lttng_element_version_patch_level, version->version_patchlevel); |
| 386 | if (ret) { |
| 387 | goto end; |
| 388 | } |
| 389 | |
| 390 | /* Name of the version */ |
| 391 | ret = mi_lttng_writer_write_element_string(writer, |
| 392 | config_element_name, version->version_name); |
| 393 | if (ret) { |
| 394 | goto end; |
| 395 | } |
| 396 | |
| 397 | /* Description mostly related to beer... */ |
| 398 | ret = mi_lttng_writer_write_element_string(writer, |
| 399 | mi_lttng_element_version_description, lttng_description); |
| 400 | if (ret) { |
| 401 | goto end; |
| 402 | } |
| 403 | |
| 404 | /* url */ |
| 405 | ret = mi_lttng_writer_write_element_string(writer, |
| 406 | mi_lttng_element_version_web, version->package_url); |
| 407 | if (ret) { |
| 408 | goto end; |
| 409 | } |
| 410 | |
| 411 | /* License: free as in free beer...no...*speech* */ |
| 412 | ret = mi_lttng_writer_write_element_string(writer, |
| 413 | mi_lttng_element_version_license, lttng_license); |
| 414 | if (ret) { |
| 415 | goto end; |
| 416 | } |
| 417 | |
| 418 | /* Close version element */ |
| 419 | ret = mi_lttng_writer_close_element(writer); |
| 420 | |
| 421 | end: |
| 422 | return ret; |
| 423 | } |
| 424 | |
| 425 | LTTNG_HIDDEN |
| 426 | int mi_lttng_sessions_open(struct mi_writer *writer) |
| 427 | { |
| 428 | return mi_lttng_writer_open_element(writer, config_element_sessions); |
| 429 | } |
| 430 | |
| 431 | LTTNG_HIDDEN |
| 432 | int mi_lttng_session(struct mi_writer *writer, |
| 433 | struct lttng_session *session, int is_open) |
| 434 | { |
| 435 | int ret; |
| 436 | |
| 437 | assert(session); |
| 438 | |
| 439 | /* Open sessions element */ |
| 440 | ret = mi_lttng_writer_open_element(writer, |
| 441 | config_element_session); |
| 442 | if (ret) { |
| 443 | goto end; |
| 444 | } |
| 445 | |
| 446 | /* Name of the session */ |
| 447 | ret = mi_lttng_writer_write_element_string(writer, |
| 448 | config_element_name, session->name); |
| 449 | if (ret) { |
| 450 | goto end; |
| 451 | } |
| 452 | |
| 453 | /* Path */ |
| 454 | ret = mi_lttng_writer_write_element_string(writer, |
| 455 | config_element_path, session->path); |
| 456 | if (ret) { |
| 457 | goto end; |
| 458 | } |
| 459 | |
| 460 | /* Enabled ? */ |
| 461 | ret = mi_lttng_writer_write_element_bool(writer, |
| 462 | config_element_enabled, session->enabled); |
| 463 | if (ret) { |
| 464 | goto end; |
| 465 | } |
| 466 | |
| 467 | /* Snapshot mode */ |
| 468 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
| 469 | config_element_snapshot_mode, session->snapshot_mode); |
| 470 | if (ret) { |
| 471 | goto end; |
| 472 | } |
| 473 | |
| 474 | /* Live timer interval in usec */ |
| 475 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
| 476 | config_element_live_timer_interval, |
| 477 | session->live_timer_interval); |
| 478 | if (ret) { |
| 479 | goto end; |
| 480 | } |
| 481 | |
| 482 | if (!is_open) { |
| 483 | /* Closing session element */ |
| 484 | ret = mi_lttng_writer_close_element(writer); |
| 485 | } |
| 486 | end: |
| 487 | return ret; |
| 488 | |
| 489 | } |
| 490 | |
| 491 | LTTNG_HIDDEN |
| 492 | int mi_lttng_domains_open(struct mi_writer *writer) |
| 493 | { |
| 494 | return mi_lttng_writer_open_element(writer, config_element_domains); |
| 495 | } |
| 496 | |
| 497 | LTTNG_HIDDEN |
| 498 | int mi_lttng_domain(struct mi_writer *writer, |
| 499 | struct lttng_domain *domain, int is_open) |
| 500 | { |
| 501 | int ret = 0; |
| 502 | const char *str_domain; |
| 503 | const char *str_buffer; |
| 504 | |
| 505 | assert(domain); |
| 506 | |
| 507 | /* Open domain element */ |
| 508 | ret = mi_lttng_writer_open_element(writer, config_element_domain); |
| 509 | if (ret) { |
| 510 | goto end; |
| 511 | } |
| 512 | |
| 513 | /* Domain Type */ |
| 514 | str_domain = mi_lttng_domaintype_string(domain->type); |
| 515 | ret = mi_lttng_writer_write_element_string(writer, config_element_type, |
| 516 | str_domain); |
| 517 | if (ret) { |
| 518 | goto end; |
| 519 | } |
| 520 | |
| 521 | /* Buffer Type */ |
| 522 | str_buffer= mi_lttng_buffertype_string(domain->buf_type); |
| 523 | ret = mi_lttng_writer_write_element_string(writer, |
| 524 | config_element_buffer_type, str_buffer); |
| 525 | if (ret) { |
| 526 | goto end; |
| 527 | } |
| 528 | |
| 529 | /* TODO: attr... not sure how to use the union.... */ |
| 530 | |
| 531 | if (!is_open) { |
| 532 | /* Closing domain element */ |
| 533 | ret = mi_lttng_writer_close_element(writer); |
| 534 | } |
| 535 | |
| 536 | end: |
| 537 | return ret; |
| 538 | |
| 539 | } |
| 540 | |
| 541 | LTTNG_HIDDEN |
| 542 | int mi_lttng_channels_open(struct mi_writer *writer) |
| 543 | { |
| 544 | return mi_lttng_writer_open_element(writer, config_element_channels); |
| 545 | } |
| 546 | |
| 547 | LTTNG_HIDDEN |
| 548 | int mi_lttng_channel(struct mi_writer *writer, |
| 549 | struct lttng_channel *channel, int is_open) |
| 550 | { |
| 551 | int ret = 0; |
| 552 | |
| 553 | assert(channel); |
| 554 | |
| 555 | /* Opening channel element */ |
| 556 | ret = mi_lttng_writer_open_element(writer, config_element_channel); |
| 557 | if (ret) { |
| 558 | goto end; |
| 559 | } |
| 560 | |
| 561 | /* Name */ |
| 562 | ret = mi_lttng_writer_write_element_string(writer, config_element_name, |
| 563 | channel->name); |
| 564 | if (ret) { |
| 565 | goto end; |
| 566 | } |
| 567 | |
| 568 | /* Enabled ? */ |
| 569 | ret = mi_lttng_writer_write_element_bool(writer, |
| 570 | config_element_enabled, channel->enabled); |
| 571 | if (ret) { |
| 572 | goto end; |
| 573 | } |
| 574 | |
| 575 | /* Attribute */ |
| 576 | ret = mi_lttng_channel_attr(writer, &channel->attr); |
| 577 | if (ret) { |
| 578 | goto end; |
| 579 | } |
| 580 | |
| 581 | if (!is_open) { |
| 582 | /* Closing channel element */ |
| 583 | ret = mi_lttng_writer_close_element(writer); |
| 584 | if (ret) { |
| 585 | goto end; |
| 586 | } |
| 587 | } |
| 588 | end: |
| 589 | return ret; |
| 590 | } |
| 591 | |
| 592 | LTTNG_HIDDEN |
| 593 | int mi_lttng_channel_attr(struct mi_writer *writer, |
| 594 | struct lttng_channel_attr *attr) |
| 595 | { |
| 596 | int ret = 0; |
| 597 | |
| 598 | assert(attr); |
| 599 | |
| 600 | /* Opening Attributes */ |
| 601 | ret = mi_lttng_writer_open_element(writer, config_element_attributes); |
| 602 | if (ret) { |
| 603 | goto end; |
| 604 | } |
| 605 | |
| 606 | /* Overwrite */ |
| 607 | ret = mi_lttng_writer_write_element_string(writer, |
| 608 | config_element_overwrite_mode, |
| 609 | attr->overwrite ? config_overwrite_mode_overwrite : |
| 610 | config_overwrite_mode_discard); |
| 611 | if (ret) { |
| 612 | goto end; |
| 613 | } |
| 614 | |
| 615 | /* Sub buffer size in byte */ |
| 616 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
| 617 | config_element_subbuf_size, attr->subbuf_size); |
| 618 | if (ret) { |
| 619 | goto end; |
| 620 | } |
| 621 | |
| 622 | /* Number of subbuffer (power of two) */ |
| 623 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
| 624 | config_element_num_subbuf, |
| 625 | attr->num_subbuf); |
| 626 | if (ret) { |
| 627 | goto end; |
| 628 | } |
| 629 | |
| 630 | /* Switch timer interval in usec */ |
| 631 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
| 632 | config_element_switch_timer_interval, |
| 633 | attr->switch_timer_interval); |
| 634 | if (ret) { |
| 635 | goto end; |
| 636 | } |
| 637 | |
| 638 | /* Read timer interval in usec */ |
| 639 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
| 640 | config_element_read_timer_interval, |
| 641 | attr->read_timer_interval); |
| 642 | if (ret) { |
| 643 | goto end; |
| 644 | } |
| 645 | |
| 646 | /* Event output */ |
| 647 | ret = mi_lttng_writer_write_element_string(writer, |
| 648 | config_element_output_type, |
| 649 | attr->output == LTTNG_EVENT_SPLICE ? |
| 650 | config_output_type_splice : config_output_type_mmap); |
| 651 | if (ret) { |
| 652 | goto end; |
| 653 | } |
| 654 | |
| 655 | /* Tracefile size in bytes */ |
| 656 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
| 657 | config_element_tracefile_size, attr->tracefile_size); |
| 658 | if (ret) { |
| 659 | goto end; |
| 660 | } |
| 661 | |
| 662 | /* Count of tracefiles */ |
| 663 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
| 664 | config_element_tracefile_count, |
| 665 | attr->tracefile_count); |
| 666 | if (ret) { |
| 667 | goto end; |
| 668 | } |
| 669 | |
| 670 | /* Live timer interval in usec*/ |
| 671 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
| 672 | config_element_live_timer_interval, |
| 673 | attr->live_timer_interval); |
| 674 | if (ret) { |
| 675 | goto end; |
| 676 | } |
| 677 | |
| 678 | /* Closing attributes */ |
| 679 | ret = mi_lttng_writer_close_element(writer); |
| 680 | if (ret) { |
| 681 | goto end; |
| 682 | } |
| 683 | end: |
| 684 | return ret; |
| 685 | |
| 686 | } |
| 687 | |
| 688 | LTTNG_HIDDEN |
| 689 | int mi_lttng_event_common_attributes(struct mi_writer *writer, |
| 690 | struct lttng_event *event) |
| 691 | { |
| 692 | int ret; |
| 693 | |
| 694 | /* Open event element */ |
| 695 | ret = mi_lttng_writer_open_element(writer, config_element_event); |
| 696 | if (ret) { |
| 697 | goto end; |
| 698 | } |
| 699 | |
| 700 | /* event name */ |
| 701 | ret = mi_lttng_writer_write_element_string(writer, |
| 702 | config_element_name, event->name); |
| 703 | if (ret) { |
| 704 | goto end; |
| 705 | } |
| 706 | |
| 707 | /* event type */ |
| 708 | ret = mi_lttng_writer_write_element_string(writer, |
| 709 | config_element_type, mi_lttng_eventtype_string(event->type)); |
| 710 | if (ret) { |
| 711 | goto end; |
| 712 | } |
| 713 | |
| 714 | /* is event enabled */ |
| 715 | ret = mi_lttng_writer_write_element_bool(writer, |
| 716 | config_element_enabled, event->enabled); |
| 717 | if (ret) { |
| 718 | goto end; |
| 719 | } |
| 720 | |
| 721 | /* event filter enabled? */ |
| 722 | ret = mi_lttng_writer_write_element_bool(writer, |
| 723 | config_element_filter, event->filter); |
| 724 | |
| 725 | end: |
| 726 | return ret; |
| 727 | } |
| 728 | |
| 729 | LTTNG_HIDDEN |
| 730 | int mi_lttng_event_tracepoint_loglevel(struct mi_writer *writer, |
| 731 | struct lttng_event *event) |
| 732 | { |
| 733 | int ret; |
| 734 | |
| 735 | /* event loglevel */ |
| 736 | ret = mi_lttng_writer_write_element_string(writer, |
| 737 | config_element_loglevel, mi_lttng_loglevel_string(event->loglevel)); |
| 738 | if (ret) { |
| 739 | goto end; |
| 740 | } |
| 741 | |
| 742 | ret = mi_lttng_writer_write_element_string(writer, |
| 743 | config_element_loglevel_type, |
| 744 | mi_lttng_logleveltype_string(event->loglevel_type)); |
| 745 | if (ret) { |
| 746 | goto end; |
| 747 | } |
| 748 | |
| 749 | /* event exclusion filter */ |
| 750 | ret = mi_lttng_writer_write_element_bool(writer, |
| 751 | config_element_exclusion, event->exclusion); |
| 752 | if (ret) { |
| 753 | goto end; |
| 754 | } |
| 755 | |
| 756 | end: |
| 757 | return ret; |
| 758 | } |
| 759 | |
| 760 | LTTNG_HIDDEN |
| 761 | int mi_lttng_event_tracepoint_no_loglevel(struct mi_writer *writer, |
| 762 | struct lttng_event *event) |
| 763 | { |
| 764 | /* event exclusion filter */ |
| 765 | return mi_lttng_writer_write_element_bool(writer, |
| 766 | config_element_exclusion, event->exclusion); |
| 767 | } |
| 768 | |
| 769 | LTTNG_HIDDEN |
| 770 | int mi_lttng_event_function_probe(struct mi_writer *writer, |
| 771 | struct lttng_event *event) |
| 772 | { |
| 773 | int ret; |
| 774 | |
| 775 | if (event->attr.probe.addr != 0) { |
| 776 | /* event probe address */ |
| 777 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
| 778 | config_element_address, event->attr.probe.addr); |
| 779 | if (ret) { |
| 780 | goto end; |
| 781 | } |
| 782 | } else { |
| 783 | /* event probe offset */ |
| 784 | ret = mi_lttng_writer_write_element_unsigned_int(writer, |
| 785 | config_element_offset, event->attr.probe.offset); |
| 786 | if (ret) { |
| 787 | goto end; |
| 788 | } |
| 789 | |
| 790 | /* event probe symbol_name */ |
| 791 | ret = mi_lttng_writer_write_element_string(writer, |
| 792 | config_element_symbol_name, event->attr.probe.symbol_name); |
| 793 | if (ret) { |
| 794 | goto end; |
| 795 | } |
| 796 | } |
| 797 | end: |
| 798 | return ret; |
| 799 | } |
| 800 | |
| 801 | LTTNG_HIDDEN |
| 802 | int mi_lttng_event_function_entry(struct mi_writer *writer, |
| 803 | struct lttng_event *event) |
| 804 | { |
| 805 | /* event probe symbol_name */ |
| 806 | return mi_lttng_writer_write_element_string(writer, |
| 807 | config_element_symbol_name, event->attr.ftrace.symbol_name); |
| 808 | } |
| 809 | |
| 810 | LTTNG_HIDDEN |
| 811 | int mi_lttng_events_open(struct mi_writer *writer) |
| 812 | { |
| 813 | return mi_lttng_writer_open_element(writer, config_element_events); |
| 814 | } |
| 815 | |
| 816 | LTTNG_HIDDEN |
| 817 | int mi_lttng_event(struct mi_writer *writer, |
| 818 | struct lttng_event *event, int is_open) |
| 819 | { |
| 820 | int ret; |
| 821 | |
| 822 | ret = mi_lttng_event_common_attributes(writer, event); |
| 823 | if (ret) { |
| 824 | goto end; |
| 825 | } |
| 826 | |
| 827 | switch (event->type) { |
| 828 | case LTTNG_EVENT_ALL: |
| 829 | /* We should never have "all" events in list. */ |
| 830 | assert(0); |
| 831 | break; |
| 832 | case LTTNG_EVENT_TRACEPOINT: |
| 833 | { |
| 834 | if (event->loglevel != -1) { |
| 835 | ret = mi_lttng_event_tracepoint_loglevel(writer, event); |
| 836 | } else { |
| 837 | ret = mi_lttng_event_tracepoint_no_loglevel(writer, event); |
| 838 | } |
| 839 | break; |
| 840 | } |
| 841 | case LTTNG_EVENT_PROBE: |
| 842 | ret = mi_lttng_event_function_probe(writer, event); |
| 843 | break; |
| 844 | case LTTNG_EVENT_FUNCTION_ENTRY: |
| 845 | ret = mi_lttng_event_function_entry(writer, event); |
| 846 | break; |
| 847 | default: |
| 848 | break; |
| 849 | } |
| 850 | |
| 851 | if (!is_open) { |
| 852 | ret = mi_lttng_writer_close_element(writer); |
| 853 | } |
| 854 | |
| 855 | end: |
| 856 | return ret; |
| 857 | } |
| 858 | |
| 859 | LTTNG_HIDDEN |
| 860 | int mi_lttng_pids_open(struct mi_writer *writer) |
| 861 | { |
| 862 | return mi_lttng_writer_open_element(writer, mi_lttng_element_pids); |
| 863 | } |
| 864 | |
| 865 | LTTNG_HIDDEN |
| 866 | int mi_lttng_pid(struct mi_writer *writer, pid_t pid , const char *cmdline, |
| 867 | int is_open) |
| 868 | { |
| 869 | int ret; |
| 870 | |
| 871 | /* Open element pid */ |
| 872 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_pid); |
| 873 | if (ret) { |
| 874 | goto end; |
| 875 | } |
| 876 | |
| 877 | /* Writing pid number */ |
| 878 | ret = mi_lttng_writer_write_element_signed_int(writer, |
| 879 | mi_lttng_element_pid_id, (int)pid); |
| 880 | if (ret) { |
| 881 | goto end; |
| 882 | } |
| 883 | |
| 884 | /* Writing name of the process */ |
| 885 | ret = mi_lttng_writer_write_element_string(writer, config_element_name, |
| 886 | cmdline); |
| 887 | if (ret) { |
| 888 | goto end; |
| 889 | } |
| 890 | |
| 891 | if (!is_open) { |
| 892 | /* Closing Pid */ |
| 893 | ret = mi_lttng_writer_close_element(writer); |
| 894 | } |
| 895 | |
| 896 | end: |
| 897 | return ret; |
| 898 | } |
| 899 | |
| 900 | LTTNG_HIDDEN |
| 901 | int mi_lttng_event_fields_open(struct mi_writer *writer) |
| 902 | { |
| 903 | return mi_lttng_writer_open_element(writer, mi_lttng_element_event_fields); |
| 904 | } |
| 905 | |
| 906 | LTTNG_HIDDEN |
| 907 | int mi_lttng_event_field(struct mi_writer *writer, |
| 908 | struct lttng_event_field *field) |
| 909 | { |
| 910 | int ret; |
| 911 | |
| 912 | if (!field->field_name[0]) { |
| 913 | /* To Review: not sure if legal david ? |
| 914 | * how should this be handle ? |
| 915 | */ |
| 916 | ret = 0; |
| 917 | goto end; |
| 918 | } |
| 919 | |
| 920 | /* Open field */ |
| 921 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_event_field); |
| 922 | if (ret) { |
| 923 | goto end; |
| 924 | } |
| 925 | |
| 926 | if (!field->field_name[0]) { |
| 927 | goto close; |
| 928 | } |
| 929 | |
| 930 | /* Name */ |
| 931 | ret = mi_lttng_writer_write_element_string(writer, config_element_name, |
| 932 | field->field_name); |
| 933 | if (ret) { |
| 934 | goto end; |
| 935 | } |
| 936 | |
| 937 | /* Type */ |
| 938 | ret = mi_lttng_writer_write_element_string(writer, config_element_type, |
| 939 | mi_lttng_eventfieldtype_string(field->type)); |
| 940 | if (ret) { |
| 941 | goto end; |
| 942 | } |
| 943 | |
| 944 | /* nowrite */ |
| 945 | ret = mi_lttng_writer_write_element_signed_int(writer, |
| 946 | mi_lttng_element_nowrite, field->nowrite); |
| 947 | if (ret) { |
| 948 | goto end; |
| 949 | } |
| 950 | |
| 951 | close: |
| 952 | /* Close field element */ |
| 953 | ret = mi_lttng_writer_close_element(writer); |
| 954 | |
| 955 | end: |
| 956 | return ret; |
| 957 | } |