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