converter/babeltrace.c

   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 _GNU_SOURCE
  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/events.h>
  28 /* TODO: fix object model for format-agnostic callbacks */
  29 #include <babeltrace/ctf/events-internal.h>
  30 #include <babeltrace/ctf/iterator.h>
  31 #include <babeltrace/ctf-text/types.h>
  32 #include <babeltrace/iterator.h>
  33 #include <popt.h>
  34 #include <errno.h>
  35 #include <stdlib.h>
  36 #include <ctype.h>
  37 #include <sys/stat.h>
  38 #include <sys/types.h>
  39 #include <fcntl.h>
  40 #include <unistd.h>
  41 #include <inttypes.h>
  42 #include <ftw.h>
  43 #include <string.h>
  44
  45 #include <babeltrace/ctf-ir/metadata.h> /* for clocks */
  46
  47 #define PARTIAL_ERROR_SLEEP     3       /* 3 seconds */
  48
  49 #define DEFAULT_FILE_ARRAY_SIZE 1
  50 static char *opt_input_format, *opt_output_format;
  51 /* Pointer into const argv */
  52 static const char *opt_input_format_arg, *opt_output_format_arg;
  53
  54 static GPtrArray *opt_input_paths;
  55 static const char *opt_output_path;
  56
  57 static struct format *fmt_read;
  58
  59 static
  60 void strlower(char *str)
  61 {
  62         while (*str) {
  63                 *str = tolower((int) *str);
  64                 str++;
  65         }
  66 }
  67
  68 enum {
  69         OPT_NONE = 0,
  70         OPT_HELP,
  71         OPT_LIST,
  72         OPT_VERBOSE,
  73         OPT_DEBUG,
  74         OPT_NAMES,
  75         OPT_FIELDS,
  76         OPT_NO_DELTA,
  77         OPT_CLOCK_OFFSET,
  78         OPT_CLOCK_CYCLES,
  79         OPT_CLOCK_SECONDS,
  80         OPT_CLOCK_DATE,
  81         OPT_CLOCK_GMT,
  82         OPT_CLOCK_FORCE_CORRELATE,
  83 };
  84
  85 static struct poptOption long_options[] = {
  86         /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
  87         { "output", 'w', POPT_ARG_STRING, &opt_output_path, OPT_NONE, NULL, NULL },
  88         { "input-format", 'i', POPT_ARG_STRING, &opt_input_format_arg, OPT_NONE, NULL, NULL },
  89         { "output-format", 'o', POPT_ARG_STRING, &opt_output_format_arg, OPT_NONE, NULL, NULL },
  90         { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL },
  91         { "list", 'l', POPT_ARG_NONE, NULL, OPT_LIST, NULL, NULL },
  92         { "verbose", 'v', POPT_ARG_NONE, NULL, OPT_VERBOSE, NULL, NULL },
  93         { "debug", 'd', POPT_ARG_NONE, NULL, OPT_DEBUG, NULL, NULL },
  94         { "names", 'n', POPT_ARG_STRING, NULL, OPT_NAMES, NULL, NULL },
  95         { "fields", 'f', POPT_ARG_STRING, NULL, OPT_FIELDS, NULL, NULL },
  96         { "no-delta", 0, POPT_ARG_NONE, NULL, OPT_NO_DELTA, NULL, NULL },
  97         { "clock-offset", 0, POPT_ARG_STRING, NULL, OPT_CLOCK_OFFSET, NULL, NULL },
  98         { "clock-cycles", 0, POPT_ARG_NONE, NULL, OPT_CLOCK_CYCLES, NULL, NULL },
  99         { "clock-seconds", 0, POPT_ARG_NONE, NULL, OPT_CLOCK_SECONDS, NULL, NULL },
 100         { "clock-date", 0, POPT_ARG_NONE, NULL, OPT_CLOCK_DATE, NULL, NULL },
 101         { "clock-gmt", 0, POPT_ARG_NONE, NULL, OPT_CLOCK_GMT, NULL, NULL },
 102         { "clock-force-correlate", 0, POPT_ARG_NONE, NULL, OPT_CLOCK_FORCE_CORRELATE, NULL, NULL },
 103         { NULL, 0, 0, NULL, 0, NULL, NULL },
 104 };
 105
 106 static void list_formats(FILE *fp)
 107 {
 108         fprintf(fp, "\n");
 109         bt_fprintf_format_list(fp);
 110 }
 111
 112 static void usage(FILE *fp)
 113 {
 114         fprintf(fp, "BabelTrace Trace Viewer and Converter %s\n\n", VERSION);
 115         fprintf(fp, "usage : babeltrace [OPTIONS] FILE...\n");
 116         fprintf(fp, "\n");
 117         fprintf(fp, "  FILE                           Input trace file(s) and/or directory(ies)\n");
 118         fprintf(fp, "                                     (space-separated)\n");
 119         fprintf(fp, "  -w, --output OUTPUT            Output trace path (default: stdout)\n");
 120         fprintf(fp, "\n");
 121         fprintf(fp, "  -i, --input-format FORMAT      Input trace format (default: ctf)\n");
 122         fprintf(fp, "  -o, --output-format FORMAT     Output trace format (default: text)\n");
 123         fprintf(fp, "\n");
 124         fprintf(fp, "  -h, --help                     This help message\n");
 125         fprintf(fp, "  -l, --list                     List available formats\n");
 126         fprintf(fp, "  -v, --verbose                  Verbose mode\n");
 127         fprintf(fp, "                                 (or set BABELTRACE_VERBOSE environment variable)\n");
 128         fprintf(fp, "  -d, --debug                    Debug mode\n");
 129         fprintf(fp, "                                 (or set BABELTRACE_DEBUG environment variable)\n");
 130         fprintf(fp, "      --no-delta                 Do not print time delta between consecutive events\n");
 131         fprintf(fp, "  -n, --names name1<,name2,...>  Print field names:\n");
 132         fprintf(fp, "                                     (payload OR args OR arg)\n");
 133         fprintf(fp, "                                     none, all, scope, header, (context OR ctx)\n");
 134         fprintf(fp, "                                        (default: payload,context)\n");
 135         fprintf(fp, "  -f, --fields name1<,name2,...> Print additional fields:\n");
 136         fprintf(fp, "                                     all, trace, trace:hostname, trace:domain,\n");
 137         fprintf(fp, "                                     trace:procname, trace:vpid, loglevel.\n");
 138         fprintf(fp, "                                     (default: trace:hostname,trace:procname,trace:vpid)\n");
 139         fprintf(fp, "      --clock-cycles             Timestamp in cycles\n");
 140         fprintf(fp, "      --clock-offset seconds     Clock offset in seconds\n");
 141         fprintf(fp, "      --clock-seconds            Print the timestamps as [sec.ns]\n");
 142         fprintf(fp, "                                 (default is: [hh:mm:ss.ns])\n");
 143         fprintf(fp, "      --clock-date               Print clock date\n");
 144         fprintf(fp, "      --clock-gmt                Print clock in GMT time zone (default: local time zone)\n");
 145         fprintf(fp, "      --clock-force-correlate    Assume that clocks are inherently correlated\n");
 146         fprintf(fp, "                                 across traces.\n");
 147         list_formats(fp);
 148         fprintf(fp, "\n");
 149 }
 150
 151 static int get_names_args(poptContext *pc)
 152 {
 153         char *str, *strlist, *strctx;
 154
 155         opt_payload_field_names = 0;
 156         opt_context_field_names = 0;
 157         strlist = (char *) poptGetOptArg(*pc);
 158         if (!strlist) {
 159                 return -EINVAL;
 160         }
 161         str = strtok_r(strlist, ",", &strctx);
 162         do {
 163                 if (!strcmp(str, "all"))
 164                         opt_all_field_names = 1;
 165                 else if (!strcmp(str, "scope"))
 166                         opt_scope_field_names = 1;
 167                 else if (!strcmp(str, "context") || !strcmp(str, "ctx"))
 168                         opt_context_field_names = 1;
 169                 else if (!strcmp(str, "header"))
 170                         opt_header_field_names = 1;
 171                 else if (!strcmp(str, "payload") || !strcmp(str, "args") || !strcmp(str, "arg"))
 172                         opt_payload_field_names = 1;
 173                 else if (!strcmp(str, "none")) {
 174                         opt_all_field_names = 0;
 175                         opt_scope_field_names = 0;
 176                         opt_context_field_names = 0;
 177                         opt_header_field_names = 0;
 178                         opt_payload_field_names = 0;
 179                 } else {
 180                         fprintf(stderr, "[error] unknown field name type %s\n", str);
 181                         return -EINVAL;
 182                 }
 183         } while ((str = strtok_r(NULL, ",", &strctx)));
 184         return 0;
 185 }
 186
 187 static int get_fields_args(poptContext *pc)
 188 {
 189         char *str, *strlist, *strctx;
 190
 191         strlist = (char *) poptGetOptArg(*pc);
 192         if (!strlist) {
 193                 return -EINVAL;
 194         }
 195         str = strtok_r(strlist, ",", &strctx);
 196         do {
 197                 opt_trace_default_fields = 0;
 198                 if (!strcmp(str, "all"))
 199                         opt_all_fields = 1;
 200                 else if (!strcmp(str, "trace"))
 201                         opt_trace_field = 1;
 202                 else if (!strcmp(str, "trace:hostname"))
 203                         opt_trace_hostname_field = 1;
 204                 else if (!strcmp(str, "trace:domain"))
 205                         opt_trace_domain_field = 1;
 206                 else if (!strcmp(str, "trace:procname"))
 207                         opt_trace_procname_field = 1;
 208                 else if (!strcmp(str, "trace:vpid"))
 209                         opt_trace_vpid_field = 1;
 210                 else if (!strcmp(str, "loglevel"))
 211                         opt_loglevel_field = 1;
 212                 else {
 213                         fprintf(stderr, "[error] unknown field type %s\n", str);
 214                         return -EINVAL;
 215                 }
 216         } while ((str = strtok_r(NULL, ",", &strctx)));
 217         return 0;
 218 }
 219
 220 /*
 221  * Return 0 if caller should continue, < 0 if caller should return
 222  * error, > 0 if caller should exit without reporting error.
 223  */
 224 static int parse_options(int argc, char **argv)
 225 {
 226         poptContext pc;
 227         int opt, ret = 0;
 228         const char *ipath;
 229
 230         if (argc == 1) {
 231                 usage(stdout);
 232                 return 1;       /* exit cleanly */
 233         }
 234
 235         pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0);
 236         poptReadDefaultConfig(pc, 0);
 237
 238         /* set default */
 239         opt_context_field_names = 1;
 240         opt_payload_field_names = 1;
 241
 242         while ((opt = poptGetNextOpt(pc)) != -1) {
 243                 switch (opt) {
 244                 case OPT_HELP:
 245                         usage(stdout);
 246                         ret = 1;        /* exit cleanly */
 247                         goto end;
 248                 case OPT_LIST:
 249                         list_formats(stdout);
 250                         ret = 1;
 251                         goto end;
 252                 case OPT_VERBOSE:
 253                         babeltrace_verbose = 1;
 254                         break;
 255                 case OPT_NAMES:
 256                         if (get_names_args(&pc)) {
 257                                 ret = -EINVAL;
 258                                 goto end;
 259                         }
 260                         break;
 261                 case OPT_FIELDS:
 262                         if (get_fields_args(&pc)) {
 263                                 ret = -EINVAL;
 264                                 goto end;
 265                         }
 266                         break;
 267                 case OPT_DEBUG:
 268                         babeltrace_debug = 1;
 269                         break;
 270                 case OPT_NO_DELTA:
 271                         opt_delta_field = 0;
 272                         break;
 273                 case OPT_CLOCK_CYCLES:
 274                         opt_clock_cycles = 1;
 275                         break;
 276                 case OPT_CLOCK_OFFSET:
 277                 {
 278                         const char *str;
 279                         char *endptr;
 280
 281                         str = poptGetOptArg(pc);
 282                         if (!str) {
 283                                 fprintf(stderr, "[error] Missing --clock-offset argument\n");
 284                                 ret = -EINVAL;
 285                                 goto end;
 286                         }
 287                         errno = 0;
 288                         opt_clock_offset = strtoull(str, &endptr, 0);
 289                         if (*endptr != '\0' || str == endptr || errno != 0) {
 290                                 fprintf(stderr, "[error] Incorrect --clock-offset argument: %s\n", str);
 291                                 ret = -EINVAL;
 292                                 goto end;
 293                         }
 294                         break;
 295                 }
 296                 case OPT_CLOCK_SECONDS:
 297                         opt_clock_seconds = 1;
 298                         break;
 299                 case OPT_CLOCK_DATE:
 300                         opt_clock_date = 1;
 301                         break;
 302                 case OPT_CLOCK_GMT:
 303                         opt_clock_gmt = 1;
 304                         break;
 305                 case OPT_CLOCK_FORCE_CORRELATE:
 306                         opt_clock_force_correlate = 1;
 307                         break;
 308
 309                 default:
 310                         ret = -EINVAL;
 311                         goto end;
 312                 }
 313         }
 314
 315         do {
 316                 ipath = poptGetArg(pc);
 317                 if (ipath)
 318                         g_ptr_array_add(opt_input_paths, (gpointer) ipath);
 319         } while (ipath);
 320         if (opt_input_paths->len == 0) {
 321                 ret = -EINVAL;
 322                 goto end;
 323         }
 324
 325 end:
 326         if (pc) {
 327                 poptFreeContext(pc);
 328         }
 329         return ret;
 330 }
 331
 332 static GPtrArray *traversed_paths = 0;
 333
 334 /*
 335  * traverse_trace_dir() is the callback function for File Tree Walk (nftw).
 336  * it receives the path of the current entry (file, dir, link..etc) with
 337  * a flag to indicate the type of the entry.
 338  * if the entry being visited is a directory and contains a metadata file,
 339  * then add the path to a global list to be processed later in
 340  * add_traces_recursive.
 341  */
 342 static int traverse_trace_dir(const char *fpath, const struct stat *sb,
 343                         int tflag, struct FTW *ftwbuf)
 344 {
 345         int dirfd, metafd;
 346         int closeret;
 347
 348         if (tflag != FTW_D)
 349                 return 0;
 350
 351         dirfd = open(fpath, 0);
 352         if (dirfd < 0) {
 353                 fprintf(stderr, "[error] [Context] Unable to open trace "
 354                         "directory file descriptor.\n");
 355                 return 0;       /* partial error */
 356         }
 357         metafd = openat(dirfd, "metadata", O_RDONLY);
 358         if (metafd < 0) {
 359                 closeret = close(dirfd);
 360                 if (closeret < 0) {
 361                         perror("close");
 362                         return -1;
 363                 }
 364                 /* No meta data, just return */
 365                 return 0;
 366         } else {
 367                 closeret = close(metafd);
 368                 if (closeret < 0) {
 369                         perror("close");
 370                         return -1;      /* failure */
 371                 }
 372                 closeret = close(dirfd);
 373                 if (closeret < 0) {
 374                         perror("close");
 375                         return -1;      /* failure */
 376                 }
 377
 378                 /* Add path to the global list */
 379                 if (traversed_paths == NULL) {
 380                         fprintf(stderr, "[error] [Context] Invalid open path array.\n");
 381                         return -1;
 382                 }
 383                 g_ptr_array_add(traversed_paths, g_string_new(fpath));
 384         }
 385
 386         return 0;
 387 }
 388 /*
 389  * bt_context_add_traces_recursive: Open a trace recursively
 390  *
 391  * Find each trace present in the subdirectory starting from the given
 392  * path, and add them to the context. The packet_seek parameter can be
 393  * NULL: this specify to use the default format packet_seek.
 394  *
 395  * Return: 0 on success, < 0 on failure, > 0 on partial failure.
 396  * Unable to open toplevel: failure.
 397  * Unable to open some subdirectory or file: warn and continue (partial
 398  * failure);
 399  */
 400 int bt_context_add_traces_recursive(struct bt_context *ctx, const char *path,
 401                 const char *format_str,
 402                 void (*packet_seek)(struct stream_pos *pos,
 403                         size_t offset, int whence))
 404 {
 405
 406         GArray *trace_ids;
 407         int ret = 0;
 408         int i;
 409
 410         /* Should lock traversed_paths mutex here if used in multithread */
 411
 412         traversed_paths = g_ptr_array_new();
 413         trace_ids = g_array_new(FALSE, TRUE, sizeof(int));
 414
 415         ret = nftw(path, traverse_trace_dir, 10, 0);
 416
 417         /* Process the array if ntfw did not return a fatal error */
 418         if (ret >= 0) {
 419                 for (i = 0; i < traversed_paths->len; i++) {
 420                         GString *trace_path = g_ptr_array_index(traversed_paths,
 421                                                                 i);
 422                         int trace_id = bt_context_add_trace(ctx,
 423                                                             trace_path->str,
 424                                                             format_str,
 425                                                             packet_seek,
 426                                                             NULL,
 427                                                             NULL);
 428                         if (trace_id < 0) {
 429                                 fprintf(stderr, "[warning] [Context] cannot open trace \"%s\" from %s "
 430                                         "for reading.\n", trace_path->str, path);
 431                                 /* Allow to skip erroneous traces. */
 432                                 ret = 1;        /* partial error */
 433                         } else {
 434                                 g_array_append_val(trace_ids, trace_id);
 435                         }
 436                         g_string_free(trace_path, TRUE);
 437                 }
 438         }
 439         g_ptr_array_free(traversed_paths, TRUE);
 440         traversed_paths = NULL;
 441
 442         /* Should unlock traversed paths mutex here if used in multithread */
 443
 444         /*
 445          * Return an error if no trace can be opened.
 446          */
 447         if (trace_ids->len == 0) {
 448                 fprintf(stderr, "[error] Cannot open any trace for reading.\n\n");
 449                 ret = -ENOENT;          /* failure */
 450         }
 451         g_array_free(trace_ids, TRUE);
 452         return ret;
 453 }
 454
 455 int convert_trace(struct trace_descriptor *td_write,
 456                   struct bt_context *ctx)
 457 {
 458         struct bt_ctf_iter *iter;
 459         struct ctf_text_stream_pos *sout;
 460         struct bt_iter_pos begin_pos;
 461         struct bt_ctf_event *ctf_event;
 462         int ret;
 463
 464         sout = container_of(td_write, struct ctf_text_stream_pos,
 465                         trace_descriptor);
 466
 467         begin_pos.type = BT_SEEK_BEGIN;
 468         iter = bt_ctf_iter_create(ctx, &begin_pos, NULL);
 469         if (!iter) {
 470                 ret = -1;
 471                 goto error_iter;
 472         }
 473         while ((ctf_event = bt_ctf_iter_read_event(iter))) {
 474                 ret = sout->parent.event_cb(&sout->parent, ctf_event->parent->stream);
 475                 if (ret) {
 476                         fprintf(stderr, "[error] Writing event failed.\n");
 477                         goto end;
 478                 }
 479                 ret = bt_iter_next(bt_ctf_get_iter(iter));
 480                 if (ret < 0)
 481                         goto end;
 482         }
 483         ret = 0;
 484
 485 end:
 486         bt_ctf_iter_destroy(iter);
 487 error_iter:
 488         return ret;
 489 }
 490
 491 int main(int argc, char **argv)
 492 {
 493         int ret, partial_error = 0, open_success = 0;
 494         struct format *fmt_write;
 495         struct trace_descriptor *td_write;
 496         struct bt_context *ctx;
 497         int i;
 498
 499         opt_input_paths = g_ptr_array_new();
 500
 501         ret = parse_options(argc, argv);
 502         if (ret < 0) {
 503                 fprintf(stderr, "Error parsing options.\n\n");
 504                 usage(stderr);
 505                 g_ptr_array_free(opt_input_paths, TRUE);
 506                 exit(EXIT_FAILURE);
 507         } else if (ret > 0) {
 508                 g_ptr_array_free(opt_input_paths, TRUE);
 509                 exit(EXIT_SUCCESS);
 510         }
 511         printf_verbose("Verbose mode active.\n");
 512         printf_debug("Debug mode active.\n");
 513
 514         if (opt_input_format_arg) {
 515                 opt_input_format = strdup(opt_input_format_arg);
 516                 if (!opt_input_format) {
 517                         partial_error = 1;
 518                         goto end;
 519                 }
 520                 strlower(opt_input_format);
 521         }
 522         if (opt_output_format_arg) {
 523                 opt_output_format = strdup(opt_output_format_arg);
 524                 if (!opt_output_format) {
 525                         partial_error = 1;
 526                         goto end;
 527                 }
 528                 strlower(opt_output_format);
 529         }
 530
 531         printf_verbose("Converting from directory(ies):\n");
 532         for (i = 0; i < opt_input_paths->len; i++) {
 533                 const char *ipath = g_ptr_array_index(opt_input_paths, i);
 534                 printf_verbose("    %s\n", ipath);
 535         }
 536         printf_verbose("Converting from format: %s\n",
 537                 opt_input_format ? : "ctf <default>");
 538         printf_verbose("Converting to directory: %s\n",
 539                 opt_output_path ? : "<stdout>");
 540         printf_verbose("Converting to format: %s\n",
 541                 opt_output_format ? : "text <default>");
 542
 543         if (!opt_input_format) {
 544                 opt_input_format = strdup("ctf");
 545                 if (!opt_input_format) {
 546                         partial_error = 1;
 547                         goto end;
 548                 }
 549         }
 550         if (!opt_output_format) {
 551                 opt_output_format = strdup("text");
 552                 if (!opt_output_format) {
 553                         partial_error = 1;
 554                         goto end;
 555                 }
 556         }
 557         fmt_read = bt_lookup_format(g_quark_from_static_string(opt_input_format));
 558         if (!fmt_read) {
 559                 fprintf(stderr, "[error] Format \"%s\" is not supported.\n\n",
 560                         opt_input_format);
 561                 partial_error = 1;
 562                 goto end;
 563         }
 564         fmt_write = bt_lookup_format(g_quark_from_static_string(opt_output_format));
 565         if (!fmt_write) {
 566                 fprintf(stderr, "[error] format \"%s\" is not supported.\n\n",
 567                         opt_output_format);
 568                 partial_error = 1;
 569                 goto end;
 570         }
 571
 572         ctx = bt_context_create();
 573         if (!ctx) {
 574                 goto error_td_read;
 575         }
 576
 577         for (i = 0; i < opt_input_paths->len; i++) {
 578                 const char *ipath = g_ptr_array_index(opt_input_paths, i);
 579                 ret = bt_context_add_traces_recursive(ctx, ipath,
 580                                 opt_input_format, NULL);
 581                 if (ret < 0) {
 582                         fprintf(stderr, "[error] opening trace \"%s\" for reading.\n\n",
 583                                 ipath);
 584                 } else if (ret > 0) {
 585                         fprintf(stderr, "[warning] errors occurred when opening trace \"%s\" for reading, continuing anyway.\n\n",
 586                                 ipath);
 587                         open_success = 1;       /* some traces were OK */
 588                         partial_error = 1;
 589                 } else {
 590                         open_success = 1;       /* all traces were OK */
 591                 }
 592         }
 593         if (!open_success) {
 594                 fprintf(stderr, "[error] none of the specified trace paths could be opened.\n\n");
 595                 goto error_td_read;
 596         }
 597
 598         td_write = fmt_write->open_trace(opt_output_path, O_RDWR, NULL, NULL);
 599         if (!td_write) {
 600                 fprintf(stderr, "Error opening trace \"%s\" for writing.\n\n",
 601                         opt_output_path ? : "<none>");
 602                 goto error_td_write;
 603         }
 604
 605         /*
 606          * Errors happened when opening traces, but we continue anyway.
 607          * sleep to let user see the stderr output before stdout.
 608          */
 609         if (partial_error)
 610                 sleep(PARTIAL_ERROR_SLEEP);
 611
 612         ret = convert_trace(td_write, ctx);
 613         if (ret) {
 614                 fprintf(stderr, "Error printing trace.\n\n");
 615                 goto error_copy_trace;
 616         }
 617
 618         fmt_write->close_trace(td_write);
 619
 620         bt_context_put(ctx);
 621         printf_verbose("finished converting. Output written to:\n%s\n",
 622                         opt_output_path ? : "<stdout>");
 623         goto end;
 624
 625         /* Error handling */
 626 error_copy_trace:
 627         fmt_write->close_trace(td_write);
 628 error_td_write:
 629         bt_context_put(ctx);
 630 error_td_read:
 631         partial_error = 1;
 632
 633         /* teardown and exit */
 634 end:
 635         free(opt_input_format);
 636         free(opt_output_format);
 637         g_ptr_array_free(opt_input_paths, TRUE);
 638         if (partial_error)
 639                 exit(EXIT_FAILURE);
 640         else
 641                 exit(EXIT_SUCCESS);
 642 }