| 1 | /* |
| 2 | * babeltrace.c |
| 3 | * |
| 4 | * Babeltrace Trace Converter |
| 5 | * |
| 6 | * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation |
| 7 | * |
| 8 | * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 9 | * |
| 10 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 11 | * of this software and associated documentation files (the "Software"), to deal |
| 12 | * in the Software without restriction, including without limitation the rights |
| 13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 14 | * copies of the Software, and to permit persons to whom the Software is |
| 15 | * furnished to do so, subject to the following conditions: |
| 16 | * |
| 17 | * The above copyright notice and this permission notice shall be included in |
| 18 | * all copies or substantial portions of the Software. |
| 19 | */ |
| 20 | |
| 21 | #define _XOPEN_SOURCE 700 |
| 22 | #include <config.h> |
| 23 | #include <babeltrace/babeltrace.h> |
| 24 | #include <babeltrace/format.h> |
| 25 | #include <babeltrace/context.h> |
| 26 | #include <babeltrace/ctf/types.h> |
| 27 | #include <babeltrace/ctf-text/types.h> |
| 28 | #include <babeltrace/iterator.h> |
| 29 | #include <popt.h> |
| 30 | #include <errno.h> |
| 31 | #include <stdlib.h> |
| 32 | #include <ctype.h> |
| 33 | #include <sys/stat.h> |
| 34 | #include <sys/types.h> |
| 35 | #include <fcntl.h> |
| 36 | #include <ftw.h> |
| 37 | #include <dirent.h> |
| 38 | #include <unistd.h> |
| 39 | #include <inttypes.h> |
| 40 | |
| 41 | #include <babeltrace/ctf-ir/metadata.h> /* for clocks */ |
| 42 | |
| 43 | #define DEFAULT_FILE_ARRAY_SIZE 1 |
| 44 | static char *opt_input_format; |
| 45 | static char *opt_output_format; |
| 46 | |
| 47 | static const char *opt_input_path; |
| 48 | static const char *opt_output_path; |
| 49 | |
| 50 | static struct trace_collection trace_collection_read; |
| 51 | static struct format *fmt_read; |
| 52 | |
| 53 | void strlower(char *str) |
| 54 | { |
| 55 | while (*str) { |
| 56 | *str = tolower(*str); |
| 57 | str++; |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | enum { |
| 62 | OPT_NONE = 0, |
| 63 | OPT_HELP, |
| 64 | OPT_LIST, |
| 65 | OPT_VERBOSE, |
| 66 | OPT_DEBUG, |
| 67 | OPT_NAMES, |
| 68 | OPT_FIELDS, |
| 69 | OPT_NO_DELTA, |
| 70 | OPT_CLOCK_OFFSET, |
| 71 | OPT_CLOCK_RAW, |
| 72 | OPT_CLOCK_SECONDS, |
| 73 | OPT_CLOCK_DATE, |
| 74 | OPT_CLOCK_GMT, |
| 75 | }; |
| 76 | |
| 77 | static struct poptOption long_options[] = { |
| 78 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ |
| 79 | { "input-format", 'i', POPT_ARG_STRING, &opt_input_format, OPT_NONE, NULL, NULL }, |
| 80 | { "output-format", 'o', POPT_ARG_STRING, &opt_output_format, OPT_NONE, NULL, NULL }, |
| 81 | { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL }, |
| 82 | { "list", 'l', POPT_ARG_NONE, NULL, OPT_LIST, NULL, NULL }, |
| 83 | { "verbose", 'v', POPT_ARG_NONE, NULL, OPT_VERBOSE, NULL, NULL }, |
| 84 | { "debug", 'd', POPT_ARG_NONE, NULL, OPT_DEBUG, NULL, NULL }, |
| 85 | { "names", 'n', POPT_ARG_STRING, NULL, OPT_NAMES, NULL, NULL }, |
| 86 | { "fields", 'f', POPT_ARG_STRING, NULL, OPT_FIELDS, NULL, NULL }, |
| 87 | { "no-delta", 0, POPT_ARG_NONE, NULL, OPT_NO_DELTA, NULL, NULL }, |
| 88 | { "clock-offset", 0, POPT_ARG_STRING, NULL, OPT_CLOCK_OFFSET, NULL, NULL }, |
| 89 | { "clock-raw", 0, POPT_ARG_NONE, NULL, OPT_CLOCK_RAW, NULL, NULL }, |
| 90 | { "clock-seconds", 0, POPT_ARG_NONE, NULL, OPT_CLOCK_SECONDS, NULL, NULL }, |
| 91 | { "clock-date", 0, POPT_ARG_NONE, NULL, OPT_CLOCK_DATE, NULL, NULL }, |
| 92 | { "clock-gmt", 0, POPT_ARG_NONE, NULL, OPT_CLOCK_GMT, NULL, NULL }, |
| 93 | { NULL, 0, 0, NULL, 0, NULL, NULL }, |
| 94 | }; |
| 95 | |
| 96 | static void list_formats(FILE *fp) |
| 97 | { |
| 98 | fprintf(fp, "\n"); |
| 99 | bt_fprintf_format_list(fp); |
| 100 | } |
| 101 | |
| 102 | static void usage(FILE *fp) |
| 103 | { |
| 104 | fprintf(fp, "BabelTrace Trace Converter %s\n\n", VERSION); |
| 105 | fprintf(fp, "usage : babeltrace [OPTIONS] INPUT <OUTPUT>\n"); |
| 106 | fprintf(fp, "\n"); |
| 107 | fprintf(fp, " INPUT Input trace path\n"); |
| 108 | fprintf(fp, " OUTPUT Output trace path (default: stdout)\n"); |
| 109 | fprintf(fp, "\n"); |
| 110 | fprintf(fp, " -i, --input-format FORMAT Input trace format (default: ctf)\n"); |
| 111 | fprintf(fp, " -o, --output-format FORMAT Output trace format (default: text)\n"); |
| 112 | fprintf(fp, "\n"); |
| 113 | fprintf(fp, " -h, --help This help message\n"); |
| 114 | fprintf(fp, " -l, --list List available formats\n"); |
| 115 | fprintf(fp, " -v, --verbose Verbose mode\n"); |
| 116 | fprintf(fp, " (or set BABELTRACE_VERBOSE environment variable)\n"); |
| 117 | fprintf(fp, " -d, --debug Debug mode\n"); |
| 118 | fprintf(fp, " (or set BABELTRACE_DEBUG environment variable)\n"); |
| 119 | fprintf(fp, " --no-delta Do not print time delta between consecutive events\n"); |
| 120 | fprintf(fp, " -n, --names name1<,name2,...> Print field names:\n"); |
| 121 | fprintf(fp, " (payload OR args OR arg)\n"); |
| 122 | fprintf(fp, " all, scope, header, (context OR ctx)\n"); |
| 123 | fprintf(fp, " (payload active by default)\n"); |
| 124 | fprintf(fp, " -f, --fields name1<,name2,...> Print additional fields:\n"); |
| 125 | fprintf(fp, " all, trace, trace:domain, trace:procname,\n"); |
| 126 | fprintf(fp, " trace:vpid, loglevel.\n"); |
| 127 | fprintf(fp, " --clock-raw Disregard internal clock offset (use raw value)\n"); |
| 128 | fprintf(fp, " --clock-offset seconds Clock offset in seconds\n"); |
| 129 | fprintf(fp, " --clock-seconds Print the timestamps as [sec.ns]\n"); |
| 130 | fprintf(fp, " (default is: [hh:mm:ss.ns])\n"); |
| 131 | fprintf(fp, " --clock-date Print clock date\n"); |
| 132 | fprintf(fp, " --clock-gmt Print clock in GMT time zone (default: local time zone)\n"); |
| 133 | list_formats(fp); |
| 134 | fprintf(fp, "\n"); |
| 135 | } |
| 136 | |
| 137 | static int get_names_args(poptContext *pc) |
| 138 | { |
| 139 | char *str, *strlist, *strctx; |
| 140 | |
| 141 | opt_payload_field_names = 0; |
| 142 | strlist = (char *) poptGetOptArg(*pc); |
| 143 | if (!strlist) { |
| 144 | return -EINVAL; |
| 145 | } |
| 146 | str = strtok_r(strlist, ",", &strctx); |
| 147 | do { |
| 148 | if (!strcmp(str, "all")) |
| 149 | opt_all_field_names = 1; |
| 150 | else if (!strcmp(str, "scope")) |
| 151 | opt_scope_field_names = 1; |
| 152 | else if (!strcmp(str, "context") || !strcmp(str, "ctx")) |
| 153 | opt_context_field_names = 1; |
| 154 | else if (!strcmp(str, "header")) |
| 155 | opt_header_field_names = 1; |
| 156 | else if (!strcmp(str, "payload") || !strcmp(str, "args") || !strcmp(str, "arg")) |
| 157 | opt_payload_field_names = 1; |
| 158 | else { |
| 159 | fprintf(stderr, "[error] unknown field name type %s\n", str); |
| 160 | return -EINVAL; |
| 161 | } |
| 162 | } while ((str = strtok_r(NULL, ",", &strctx))); |
| 163 | return 0; |
| 164 | } |
| 165 | |
| 166 | static int get_fields_args(poptContext *pc) |
| 167 | { |
| 168 | char *str, *strlist, *strctx; |
| 169 | |
| 170 | opt_payload_field_names = 0; |
| 171 | strlist = (char *) poptGetOptArg(*pc); |
| 172 | if (!strlist) { |
| 173 | return -EINVAL; |
| 174 | } |
| 175 | str = strtok_r(strlist, ",", &strctx); |
| 176 | do { |
| 177 | if (!strcmp(str, "all")) |
| 178 | opt_all_fields = 1; |
| 179 | else if (!strcmp(str, "trace")) |
| 180 | opt_trace_field = 1; |
| 181 | else if (!strcmp(str, "trace:domain")) |
| 182 | opt_trace_domain_field = 1; |
| 183 | else if (!strcmp(str, "trace:procname")) |
| 184 | opt_trace_procname_field = 1; |
| 185 | else if (!strcmp(str, "trace:vpid")) |
| 186 | opt_trace_vpid_field = 1; |
| 187 | else if (!strcmp(str, "loglevel")) |
| 188 | opt_loglevel_field = 1; |
| 189 | else { |
| 190 | fprintf(stderr, "[error] unknown field type %s\n", str); |
| 191 | return -EINVAL; |
| 192 | } |
| 193 | } while ((str = strtok_r(NULL, ",", &strctx))); |
| 194 | return 0; |
| 195 | } |
| 196 | |
| 197 | /* |
| 198 | * Return 0 if caller should continue, < 0 if caller should return |
| 199 | * error, > 0 if caller should exit without reporting error. |
| 200 | */ |
| 201 | static int parse_options(int argc, char **argv) |
| 202 | { |
| 203 | poptContext pc; |
| 204 | int opt, ret = 0; |
| 205 | |
| 206 | if (argc == 1) { |
| 207 | usage(stdout); |
| 208 | return 1; /* exit cleanly */ |
| 209 | } |
| 210 | |
| 211 | pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0); |
| 212 | poptReadDefaultConfig(pc, 0); |
| 213 | |
| 214 | /* set default */ |
| 215 | opt_payload_field_names = 1; |
| 216 | |
| 217 | while ((opt = poptGetNextOpt(pc)) != -1) { |
| 218 | switch (opt) { |
| 219 | case OPT_HELP: |
| 220 | usage(stdout); |
| 221 | ret = 1; /* exit cleanly */ |
| 222 | goto end; |
| 223 | case OPT_LIST: |
| 224 | list_formats(stdout); |
| 225 | ret = 1; |
| 226 | goto end; |
| 227 | case OPT_VERBOSE: |
| 228 | babeltrace_verbose = 1; |
| 229 | break; |
| 230 | case OPT_NAMES: |
| 231 | if (get_names_args(&pc)) { |
| 232 | ret = -EINVAL; |
| 233 | goto end; |
| 234 | } |
| 235 | break; |
| 236 | case OPT_FIELDS: |
| 237 | if (get_fields_args(&pc)) { |
| 238 | ret = -EINVAL; |
| 239 | goto end; |
| 240 | } |
| 241 | break; |
| 242 | case OPT_DEBUG: |
| 243 | babeltrace_debug = 1; |
| 244 | break; |
| 245 | case OPT_NO_DELTA: |
| 246 | opt_delta_field = 0; |
| 247 | break; |
| 248 | case OPT_CLOCK_RAW: |
| 249 | opt_clock_raw = 1; |
| 250 | break; |
| 251 | case OPT_CLOCK_OFFSET: |
| 252 | { |
| 253 | char *str, *endptr; |
| 254 | |
| 255 | str = poptGetOptArg(pc); |
| 256 | if (!str) { |
| 257 | fprintf(stderr, "[error] Missing --clock-offset argument\n"); |
| 258 | ret = -EINVAL; |
| 259 | goto end; |
| 260 | } |
| 261 | errno = 0; |
| 262 | opt_clock_offset = strtoull(str, &endptr, 0); |
| 263 | if (*endptr != '\0' || str == endptr || errno != 0) { |
| 264 | fprintf(stderr, "[error] Incorrect --clock-offset argument: %s\n", str); |
| 265 | ret = -EINVAL; |
| 266 | goto end; |
| 267 | } |
| 268 | break; |
| 269 | } |
| 270 | case OPT_CLOCK_SECONDS: |
| 271 | opt_clock_seconds = 1; |
| 272 | break; |
| 273 | case OPT_CLOCK_DATE: |
| 274 | opt_clock_date = 1; |
| 275 | break; |
| 276 | case OPT_CLOCK_GMT: |
| 277 | opt_clock_gmt = 1; |
| 278 | break; |
| 279 | |
| 280 | default: |
| 281 | ret = -EINVAL; |
| 282 | goto end; |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | opt_input_path = poptGetArg(pc); |
| 287 | if (!opt_input_path) { |
| 288 | ret = -EINVAL; |
| 289 | goto end; |
| 290 | } |
| 291 | opt_output_path = poptGetArg(pc); |
| 292 | |
| 293 | end: |
| 294 | if (pc) { |
| 295 | poptFreeContext(pc); |
| 296 | } |
| 297 | return ret; |
| 298 | } |
| 299 | |
| 300 | static void init_trace_collection(struct trace_collection *tc) |
| 301 | { |
| 302 | tc->array = g_ptr_array_sized_new(DEFAULT_FILE_ARRAY_SIZE); |
| 303 | tc->clocks = g_hash_table_new(g_direct_hash, g_direct_equal); |
| 304 | tc->single_clock_offset_avg = 0; |
| 305 | tc->offset_first = 0; |
| 306 | tc->delta_offset_first_sum = 0; |
| 307 | tc->offset_nr = 0; |
| 308 | } |
| 309 | |
| 310 | /* |
| 311 | * finalize_trace_collection() closes the opened traces for read |
| 312 | * and free the memory allocated for trace collection |
| 313 | */ |
| 314 | static void finalize_trace_collection(struct trace_collection *tc) |
| 315 | { |
| 316 | int i; |
| 317 | |
| 318 | for (i = 0; i < tc->array->len; i++) { |
| 319 | struct trace_descriptor *temp = |
| 320 | g_ptr_array_index(tc->array, i); |
| 321 | fmt_read->close_trace(temp); |
| 322 | } |
| 323 | g_ptr_array_free(tc->array, TRUE); |
| 324 | g_hash_table_destroy(tc->clocks); |
| 325 | } |
| 326 | |
| 327 | struct clock_match { |
| 328 | GHashTable *clocks; |
| 329 | struct ctf_clock *clock_match; |
| 330 | struct trace_collection *tc; |
| 331 | }; |
| 332 | |
| 333 | static void check_clock_match(gpointer key, gpointer value, gpointer user_data) |
| 334 | { |
| 335 | struct clock_match *match = user_data; |
| 336 | struct ctf_clock *clock_a = value, *clock_b; |
| 337 | |
| 338 | if (clock_a->uuid != 0) { |
| 339 | /* |
| 340 | * Lookup the the trace clocks into the collection |
| 341 | * clocks. |
| 342 | */ |
| 343 | clock_b = g_hash_table_lookup(match->clocks, |
| 344 | (gpointer) (unsigned long) clock_a->uuid); |
| 345 | if (clock_b) { |
| 346 | match->clock_match = clock_b; |
| 347 | return; |
| 348 | } |
| 349 | } else if (clock_a->absolute) { |
| 350 | /* |
| 351 | * Absolute time references, such as NTP, are looked up |
| 352 | * by clock name. |
| 353 | */ |
| 354 | clock_b = g_hash_table_lookup(match->clocks, |
| 355 | (gpointer) (unsigned long) clock_a->name); |
| 356 | if (clock_b) { |
| 357 | match->clock_match = clock_b; |
| 358 | return; |
| 359 | } |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | static void clock_add(gpointer key, gpointer value, gpointer user_data) |
| 364 | { |
| 365 | struct clock_match *clock_match = user_data; |
| 366 | GHashTable *tc_clocks = clock_match->clocks; |
| 367 | struct ctf_clock *t_clock = value; |
| 368 | GQuark v; |
| 369 | |
| 370 | if (t_clock->absolute) |
| 371 | v = t_clock->name; |
| 372 | else |
| 373 | v = t_clock->uuid; |
| 374 | if (v) { |
| 375 | struct ctf_clock *tc_clock; |
| 376 | |
| 377 | tc_clock = g_hash_table_lookup(tc_clocks, |
| 378 | (gpointer) (unsigned long) v); |
| 379 | if (!tc_clock) { |
| 380 | /* |
| 381 | * For now, we only support CTF that has one |
| 382 | * single clock uuid or name (absolute ref). |
| 383 | */ |
| 384 | if (g_hash_table_size(tc_clocks) > 0) { |
| 385 | fprintf(stderr, "[error] Only CTF traces with a single clock description are supported by this babeltrace version.\n"); |
| 386 | } |
| 387 | if (!clock_match->tc->offset_nr) { |
| 388 | clock_match->tc->offset_first = |
| 389 | (t_clock->offset_s * 1000000000ULL) + t_clock->offset; |
| 390 | clock_match->tc->delta_offset_first_sum = 0; |
| 391 | clock_match->tc->offset_nr++; |
| 392 | clock_match->tc->single_clock_offset_avg = |
| 393 | clock_match->tc->offset_first; |
| 394 | } |
| 395 | g_hash_table_insert(tc_clocks, |
| 396 | (gpointer) (unsigned long) v, |
| 397 | value); |
| 398 | } else { |
| 399 | int64_t diff_ns; |
| 400 | |
| 401 | /* |
| 402 | * Check that the offsets match. If not, warn |
| 403 | * the user that we do an arbitrary choice. |
| 404 | */ |
| 405 | diff_ns = tc_clock->offset_s; |
| 406 | diff_ns -= t_clock->offset_s; |
| 407 | diff_ns *= 1000000000ULL; |
| 408 | diff_ns += tc_clock->offset; |
| 409 | diff_ns -= t_clock->offset; |
| 410 | printf_debug("Clock \"%s\" offset between traces has a delta of %" PRIu64 " ns.", |
| 411 | g_quark_to_string(tc_clock->name), |
| 412 | diff_ns < 0 ? -diff_ns : diff_ns); |
| 413 | if (diff_ns > 10000) { |
| 414 | fprintf(stderr, "[warning] Clock \"%s\" offset differs between traces (delta %" PRIu64 " ns). Using average.\n", |
| 415 | g_quark_to_string(tc_clock->name), |
| 416 | diff_ns < 0 ? -diff_ns : diff_ns); |
| 417 | } |
| 418 | /* Compute average */ |
| 419 | clock_match->tc->delta_offset_first_sum += |
| 420 | (t_clock->offset_s * 1000000000ULL) + t_clock->offset |
| 421 | - clock_match->tc->offset_first; |
| 422 | clock_match->tc->offset_nr++; |
| 423 | clock_match->tc->single_clock_offset_avg = |
| 424 | clock_match->tc->offset_first |
| 425 | + (clock_match->tc->delta_offset_first_sum / clock_match->tc->offset_nr); |
| 426 | } |
| 427 | } |
| 428 | } |
| 429 | |
| 430 | /* |
| 431 | * Whenever we add a trace to the trace collection, check that we can |
| 432 | * correlate this trace with at least one other clock in the trace. |
| 433 | */ |
| 434 | static int trace_collection_add(struct trace_collection *tc, |
| 435 | struct trace_descriptor *td) |
| 436 | { |
| 437 | struct ctf_trace *trace = container_of(td, struct ctf_trace, parent); |
| 438 | |
| 439 | g_ptr_array_add(tc->array, td); |
| 440 | trace->collection = tc; |
| 441 | |
| 442 | if (tc->array->len > 1) { |
| 443 | struct clock_match clock_match = { |
| 444 | .clocks = tc->clocks, |
| 445 | .clock_match = NULL, |
| 446 | .tc = NULL, |
| 447 | }; |
| 448 | |
| 449 | /* |
| 450 | * With two or more traces, we need correlation info |
| 451 | * avalable. |
| 452 | */ |
| 453 | g_hash_table_foreach(trace->clocks, |
| 454 | check_clock_match, |
| 455 | &clock_match); |
| 456 | if (!clock_match.clock_match) { |
| 457 | fprintf(stderr, "[error] No clocks can be correlated and multiple traces are added to the collection.\n"); |
| 458 | goto error; |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | { |
| 463 | struct clock_match clock_match = { |
| 464 | .clocks = tc->clocks, |
| 465 | .clock_match = NULL, |
| 466 | .tc = tc, |
| 467 | }; |
| 468 | |
| 469 | /* |
| 470 | * Add each clock from the trace clocks into the trace |
| 471 | * collection clocks. |
| 472 | */ |
| 473 | g_hash_table_foreach(trace->clocks, |
| 474 | clock_add, |
| 475 | &clock_match); |
| 476 | } |
| 477 | return 0; |
| 478 | error: |
| 479 | return -EPERM; |
| 480 | } |
| 481 | |
| 482 | int convert_trace(struct trace_descriptor *td_write, |
| 483 | struct bt_context *ctx) |
| 484 | { |
| 485 | struct bt_iter *iter; |
| 486 | struct ctf_stream *stream; |
| 487 | struct ctf_stream_event *event; |
| 488 | struct ctf_text_stream_pos *sout; |
| 489 | struct bt_iter_pos begin_pos; |
| 490 | int ret; |
| 491 | |
| 492 | sout = container_of(td_write, struct ctf_text_stream_pos, |
| 493 | trace_descriptor); |
| 494 | |
| 495 | begin_pos.type = BT_SEEK_BEGIN; |
| 496 | iter = bt_iter_create(ctx, &begin_pos, NULL); |
| 497 | if (!iter) { |
| 498 | ret = -1; |
| 499 | goto error_iter; |
| 500 | } |
| 501 | while (bt_iter_read_event(iter, &stream, &event) == 0) { |
| 502 | ret = sout->parent.event_cb(&sout->parent, stream); |
| 503 | if (ret) { |
| 504 | fprintf(stderr, "[error] Writing event failed.\n"); |
| 505 | goto end; |
| 506 | } |
| 507 | ret = bt_iter_next(iter); |
| 508 | if (ret < 0) |
| 509 | goto end; |
| 510 | } |
| 511 | ret = 0; |
| 512 | |
| 513 | end: |
| 514 | bt_iter_destroy(iter); |
| 515 | error_iter: |
| 516 | return ret; |
| 517 | } |
| 518 | |
| 519 | |
| 520 | /* |
| 521 | * traverse_dir() is the callback functiion for File Tree Walk (nftw). |
| 522 | * it receives the path of the current entry (file, dir, link..etc) with |
| 523 | * a flag to indicate the type of the entry. |
| 524 | * if the entry being visited is a directory and contains a metadata file, |
| 525 | * then open it for reading and save a trace_descriptor to that directory |
| 526 | * in the read trace collection. |
| 527 | */ |
| 528 | static int traverse_dir(const char *fpath, const struct stat *sb, |
| 529 | int tflag, struct FTW *ftwbuf) |
| 530 | { |
| 531 | int dirfd; |
| 532 | int fd; |
| 533 | struct trace_descriptor *td_read; |
| 534 | int ret; |
| 535 | |
| 536 | if (tflag != FTW_D) |
| 537 | return 0; |
| 538 | dirfd = open(fpath, 0); |
| 539 | if (dirfd < 0) { |
| 540 | fprintf(stderr, "[error] unable to open trace " |
| 541 | "directory file descriptor.\n"); |
| 542 | return -1; |
| 543 | } |
| 544 | fd = openat(dirfd, "metadata", O_RDONLY); |
| 545 | if (fd < 0) { |
| 546 | close(dirfd); |
| 547 | } else { |
| 548 | close(fd); |
| 549 | close(dirfd); |
| 550 | td_read = fmt_read->open_trace(opt_input_path, |
| 551 | fpath, O_RDONLY, ctf_move_pos_slow, |
| 552 | NULL); |
| 553 | if (!td_read) { |
| 554 | fprintf(stderr, "Error opening trace \"%s\" " |
| 555 | "for reading.\n\n", fpath); |
| 556 | return -1; /* error */ |
| 557 | } |
| 558 | ret = trace_collection_add(&trace_collection_read, td_read); |
| 559 | if (ret) { |
| 560 | return -1; |
| 561 | } |
| 562 | } |
| 563 | return 0; /* success */ |
| 564 | } |
| 565 | |
| 566 | int main(int argc, char **argv) |
| 567 | { |
| 568 | int ret; |
| 569 | struct format *fmt_write; |
| 570 | struct trace_descriptor *td_write; |
| 571 | struct bt_context *ctx; |
| 572 | |
| 573 | ret = parse_options(argc, argv); |
| 574 | if (ret < 0) { |
| 575 | fprintf(stderr, "Error parsing options.\n\n"); |
| 576 | usage(stderr); |
| 577 | exit(EXIT_FAILURE); |
| 578 | } else if (ret > 0) { |
| 579 | exit(EXIT_SUCCESS); |
| 580 | } |
| 581 | printf_verbose("Verbose mode active.\n"); |
| 582 | printf_debug("Debug mode active.\n"); |
| 583 | |
| 584 | if (opt_input_format) |
| 585 | strlower(opt_input_format); |
| 586 | if (opt_output_format) |
| 587 | strlower(opt_output_format); |
| 588 | |
| 589 | printf_verbose("Converting from directory: %s\n", opt_input_path); |
| 590 | printf_verbose("Converting from format: %s\n", |
| 591 | opt_input_format ? : "ctf <default>"); |
| 592 | printf_verbose("Converting to directory: %s\n", |
| 593 | opt_output_path ? : "<stdout>"); |
| 594 | printf_verbose("Converting to format: %s\n", |
| 595 | opt_output_format ? : "text <default>"); |
| 596 | |
| 597 | if (!opt_input_format) |
| 598 | opt_input_format = "ctf"; |
| 599 | if (!opt_output_format) |
| 600 | opt_output_format = "text"; |
| 601 | fmt_read = bt_lookup_format(g_quark_from_static_string(opt_input_format)); |
| 602 | if (!fmt_read) { |
| 603 | fprintf(stderr, "[error] Format \"%s\" is not supported.\n\n", |
| 604 | opt_input_format); |
| 605 | exit(EXIT_FAILURE); |
| 606 | } |
| 607 | fmt_write = bt_lookup_format(g_quark_from_static_string(opt_output_format)); |
| 608 | if (!fmt_write) { |
| 609 | fprintf(stderr, "[error] format \"%s\" is not supported.\n\n", |
| 610 | opt_output_format); |
| 611 | exit(EXIT_FAILURE); |
| 612 | } |
| 613 | |
| 614 | /* |
| 615 | * pass the input path to nftw() . |
| 616 | * specify traverse_dir() as the callback function. |
| 617 | * depth = 10 which is the max number of file descriptors |
| 618 | * that nftw() can open at a given time. |
| 619 | * flags = 0 check nftw documentation for more info . |
| 620 | */ |
| 621 | init_trace_collection(&trace_collection_read); |
| 622 | ret = nftw(opt_input_path, traverse_dir, 10, 0); |
| 623 | if (ret != 0) { |
| 624 | fprintf(stderr, "[error] opening trace \"%s\" for reading.\n\n", |
| 625 | opt_input_path); |
| 626 | goto error_td_read; |
| 627 | } |
| 628 | if (trace_collection_read.array->len == 0) { |
| 629 | fprintf(stderr, "[warning] no metadata file was found." |
| 630 | " no output was generated\n"); |
| 631 | return 0; |
| 632 | } |
| 633 | ctx = bt_context_create(&trace_collection_read); |
| 634 | if (!ctx) { |
| 635 | fprintf(stderr, "Error allocating a new context\n"); |
| 636 | goto error_td_read; |
| 637 | } |
| 638 | td_write = fmt_write->open_trace(NULL, opt_output_path, O_RDWR, NULL, NULL); |
| 639 | if (!td_write) { |
| 640 | fprintf(stderr, "Error opening trace \"%s\" for writing.\n\n", |
| 641 | opt_output_path ? : "<none>"); |
| 642 | goto error_td_write; |
| 643 | } |
| 644 | |
| 645 | ret = convert_trace(td_write, ctx); |
| 646 | if (ret) { |
| 647 | fprintf(stderr, "Error printing trace.\n\n"); |
| 648 | goto error_copy_trace; |
| 649 | } |
| 650 | |
| 651 | fmt_write->close_trace(td_write); |
| 652 | finalize_trace_collection(&trace_collection_read); |
| 653 | bt_context_destroy(ctx); |
| 654 | printf_verbose("finished converting. Output written to:\n%s\n", |
| 655 | opt_output_path ? : "<stdout>"); |
| 656 | exit(EXIT_SUCCESS); |
| 657 | |
| 658 | /* Error handling */ |
| 659 | error_copy_trace: |
| 660 | fmt_write->close_trace(td_write); |
| 661 | error_td_write: |
| 662 | finalize_trace_collection(&trace_collection_read); |
| 663 | error_td_read: |
| 664 | exit(EXIT_FAILURE); |
| 665 | } |