API : iterator get and set position
[babeltrace.git] / converter / babeltrace.c
CommitLineData
34ac0e6c
MD
1/*
2 * babeltrace.c
3 *
4 * Babeltrace Trace Converter
5 *
64fa3fec
MD
6 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
7 *
8 * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
34ac0e6c
MD
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 */
4c8bfb7e 20
afb48eae 21#define _XOPEN_SOURCE 700
00f7fbf0 22#include <config.h>
95d36295 23#include <babeltrace/babeltrace.h>
7fb21036 24#include <babeltrace/format.h>
95d36295
JD
25#include <babeltrace/context.h>
26#include <babeltrace/ctf/types.h>
31bdef5c 27#include <babeltrace/ctf-text/types.h>
6204d33c 28#include <babeltrace/iterator.h>
34ac0e6c
MD
29#include <popt.h>
30#include <errno.h>
31#include <stdlib.h>
bbefb8dd
MD
32#include <ctype.h>
33#include <sys/stat.h>
34#include <sys/types.h>
35#include <fcntl.h>
afb48eae
AA
36#include <ftw.h>
37#include <dirent.h>
38#include <unistd.h>
70accc14 39#include <inttypes.h>
4c8bfb7e 40
a44bc4c9
MD
41#include <babeltrace/ctf-ir/metadata.h> /* for clocks */
42
afb48eae 43#define DEFAULT_FILE_ARRAY_SIZE 1
bbefb8dd
MD
44static char *opt_input_format;
45static char *opt_output_format;
34ac0e6c
MD
46
47static const char *opt_input_path;
48static const char *opt_output_path;
49
afb48eae
AA
50static struct trace_collection trace_collection_read;
51static struct format *fmt_read;
52
bbefb8dd
MD
53void strlower(char *str)
54{
55 while (*str) {
56 *str = tolower(*str);
57 str++;
58 }
59}
60
34ac0e6c
MD
61enum {
62 OPT_NONE = 0,
63 OPT_HELP,
7fb21036 64 OPT_LIST,
34ac0e6c
MD
65 OPT_VERBOSE,
66 OPT_DEBUG,
d63ca2cd 67 OPT_NAMES,
359d7456 68 OPT_FIELDS,
8d8ed9af 69 OPT_NO_DELTA,
11ac6674
MD
70 OPT_CLOCK_OFFSET,
71 OPT_CLOCK_RAW,
72 OPT_CLOCK_SECONDS,
73 OPT_CLOCK_DATE,
74 OPT_CLOCK_GMT,
34ac0e6c
MD
75};
76
77static 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 },
7fb21036 82 { "list", 'l', POPT_ARG_NONE, NULL, OPT_LIST, NULL, NULL },
34ac0e6c
MD
83 { "verbose", 'v', POPT_ARG_NONE, NULL, OPT_VERBOSE, NULL, NULL },
84 { "debug", 'd', POPT_ARG_NONE, NULL, OPT_DEBUG, NULL, NULL },
cba1661c 85 { "names", 'n', POPT_ARG_STRING, NULL, OPT_NAMES, NULL, NULL },
359d7456 86 { "fields", 'f', POPT_ARG_STRING, NULL, OPT_FIELDS, NULL, NULL },
8d8ed9af 87 { "no-delta", 0, POPT_ARG_NONE, NULL, OPT_NO_DELTA, NULL, NULL },
11ac6674
MD
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 },
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MD
93 { NULL, 0, 0, NULL, 0, NULL, NULL },
94};
95
7fb21036
MD
96static void list_formats(FILE *fp)
97{
98 fprintf(fp, "\n");
99 bt_fprintf_format_list(fp);
100}
101
34ac0e6c 102static void usage(FILE *fp)
4c8bfb7e 103{
4c15b06b 104 fprintf(fp, "BabelTrace Trace Viewer and Converter %s\n\n", VERSION);
4d5678b9 105 fprintf(fp, "usage : babeltrace [OPTIONS] INPUT <OUTPUT>\n");
34ac0e6c 106 fprintf(fp, "\n");
4d5678b9
MD
107 fprintf(fp, " INPUT Input trace path\n");
108 fprintf(fp, " OUTPUT Output trace path (default: stdout)\n");
34ac0e6c 109 fprintf(fp, "\n");
d2b8ea6b
MD
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");
34ac0e6c 112 fprintf(fp, "\n");
4d5678b9
MD
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");
cba1661c 116 fprintf(fp, " (or set BABELTRACE_VERBOSE environment variable)\n");
4d5678b9 117 fprintf(fp, " -d, --debug Debug mode\n");
cba1661c 118 fprintf(fp, " (or set BABELTRACE_DEBUG environment variable)\n");
8d8ed9af 119 fprintf(fp, " --no-delta Do not print time delta between consecutive events\n");
359d7456 120 fprintf(fp, " -n, --names name1<,name2,...> Print field names:\n");
82662ad4
MD
121 fprintf(fp, " (payload OR args OR arg)\n");
122 fprintf(fp, " all, scope, header, (context OR ctx)\n");
cba1661c 123 fprintf(fp, " (payload active by default)\n");
359d7456
MD
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");
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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");
7fb21036 133 list_formats(fp);
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MD
134 fprintf(fp, "\n");
135}
136
cba1661c
MD
137static 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;
359d7456
MD
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
166static int get_fields_args(poptContext *pc)
167{
168 char *str, *strlist, *strctx;
169
359d7456
MD
170 strlist = (char *) poptGetOptArg(*pc);
171 if (!strlist) {
172 return -EINVAL;
173 }
174 str = strtok_r(strlist, ",", &strctx);
175 do {
176 if (!strcmp(str, "all"))
177 opt_all_fields = 1;
82662ad4 178 else if (!strcmp(str, "trace"))
359d7456 179 opt_trace_field = 1;
8c250d87 180 else if (!strcmp(str, "trace:domain"))
359d7456 181 opt_trace_domain_field = 1;
8c250d87 182 else if (!strcmp(str, "trace:procname"))
359d7456 183 opt_trace_procname_field = 1;
8c250d87 184 else if (!strcmp(str, "trace:vpid"))
359d7456 185 opt_trace_vpid_field = 1;
d86d62f8 186 else if (!strcmp(str, "loglevel"))
359d7456 187 opt_loglevel_field = 1;
cba1661c 188 else {
359d7456 189 fprintf(stderr, "[error] unknown field type %s\n", str);
cba1661c
MD
190 return -EINVAL;
191 }
192 } while ((str = strtok_r(NULL, ",", &strctx)));
193 return 0;
194}
195
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196/*
197 * Return 0 if caller should continue, < 0 if caller should return
198 * error, > 0 if caller should exit without reporting error.
199 */
bbefb8dd 200static int parse_options(int argc, char **argv)
34ac0e6c
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201{
202 poptContext pc;
203 int opt, ret = 0;
204
0f980a35
MD
205 if (argc == 1) {
206 usage(stdout);
207 return 1; /* exit cleanly */
208 }
209
bbefb8dd 210 pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0);
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211 poptReadDefaultConfig(pc, 0);
212
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213 /* set default */
214 opt_payload_field_names = 1;
215
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216 while ((opt = poptGetNextOpt(pc)) != -1) {
217 switch (opt) {
218 case OPT_HELP:
7fb21036 219 usage(stdout);
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220 ret = 1; /* exit cleanly */
221 goto end;
7fb21036
MD
222 case OPT_LIST:
223 list_formats(stdout);
224 ret = 1;
225 goto end;
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MD
226 case OPT_VERBOSE:
227 babeltrace_verbose = 1;
228 break;
cba1661c
MD
229 case OPT_NAMES:
230 if (get_names_args(&pc)) {
231 ret = -EINVAL;
232 goto end;
233 }
234 break;
359d7456
MD
235 case OPT_FIELDS:
236 if (get_fields_args(&pc)) {
237 ret = -EINVAL;
238 goto end;
239 }
240 break;
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241 case OPT_DEBUG:
242 babeltrace_debug = 1;
243 break;
8d8ed9af 244 case OPT_NO_DELTA:
359d7456 245 opt_delta_field = 0;
8d8ed9af 246 break;
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MD
247 case OPT_CLOCK_RAW:
248 opt_clock_raw = 1;
249 break;
250 case OPT_CLOCK_OFFSET:
251 {
252 char *str, *endptr;
253
254 str = poptGetOptArg(pc);
255 if (!str) {
256 fprintf(stderr, "[error] Missing --clock-offset argument\n");
257 ret = -EINVAL;
258 goto end;
259 }
260 errno = 0;
261 opt_clock_offset = strtoull(str, &endptr, 0);
262 if (*endptr != '\0' || str == endptr || errno != 0) {
263 fprintf(stderr, "[error] Incorrect --clock-offset argument: %s\n", str);
264 ret = -EINVAL;
265 goto end;
266 }
267 break;
268 }
269 case OPT_CLOCK_SECONDS:
270 opt_clock_seconds = 1;
271 break;
272 case OPT_CLOCK_DATE:
273 opt_clock_date = 1;
274 break;
275 case OPT_CLOCK_GMT:
276 opt_clock_gmt = 1;
277 break;
278
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MD
279 default:
280 ret = -EINVAL;
281 goto end;
282 }
283 }
284
285 opt_input_path = poptGetArg(pc);
286 if (!opt_input_path) {
287 ret = -EINVAL;
288 goto end;
289 }
290 opt_output_path = poptGetArg(pc);
cba1661c 291
34ac0e6c
MD
292end:
293 if (pc) {
294 poptFreeContext(pc);
295 }
296 return ret;
297}
298
afb48eae
AA
299static void init_trace_collection(struct trace_collection *tc)
300{
301 tc->array = g_ptr_array_sized_new(DEFAULT_FILE_ARRAY_SIZE);
a44bc4c9 302 tc->clocks = g_hash_table_new(g_direct_hash, g_direct_equal);
0716bb06
MD
303 tc->single_clock_offset_avg = 0;
304 tc->offset_first = 0;
305 tc->delta_offset_first_sum = 0;
306 tc->offset_nr = 0;
afb48eae
AA
307}
308
309/*
310 * finalize_trace_collection() closes the opened traces for read
311 * and free the memory allocated for trace collection
312 */
313static void finalize_trace_collection(struct trace_collection *tc)
314{
315 int i;
316
317 for (i = 0; i < tc->array->len; i++) {
318 struct trace_descriptor *temp =
319 g_ptr_array_index(tc->array, i);
320 fmt_read->close_trace(temp);
321 }
322 g_ptr_array_free(tc->array, TRUE);
a44bc4c9
MD
323 g_hash_table_destroy(tc->clocks);
324}
325
326struct clock_match {
327 GHashTable *clocks;
328 struct ctf_clock *clock_match;
fa709ab2 329 struct trace_collection *tc;
a44bc4c9
MD
330};
331
332static void check_clock_match(gpointer key, gpointer value, gpointer user_data)
333{
334 struct clock_match *match = user_data;
335 struct ctf_clock *clock_a = value, *clock_b;
336
337 if (clock_a->uuid != 0) {
338 /*
339 * Lookup the the trace clocks into the collection
340 * clocks.
341 */
342 clock_b = g_hash_table_lookup(match->clocks,
343 (gpointer) (unsigned long) clock_a->uuid);
344 if (clock_b) {
345 match->clock_match = clock_b;
346 return;
347 }
348 } else if (clock_a->absolute) {
349 /*
350 * Absolute time references, such as NTP, are looked up
351 * by clock name.
352 */
353 clock_b = g_hash_table_lookup(match->clocks,
354 (gpointer) (unsigned long) clock_a->name);
355 if (clock_b) {
356 match->clock_match = clock_b;
357 return;
358 }
359 }
360}
361
362static void clock_add(gpointer key, gpointer value, gpointer user_data)
363{
fa709ab2
MD
364 struct clock_match *clock_match = user_data;
365 GHashTable *tc_clocks = clock_match->clocks;
a44bc4c9
MD
366 struct ctf_clock *t_clock = value;
367 GQuark v;
368
369 if (t_clock->absolute)
370 v = t_clock->name;
371 else
372 v = t_clock->uuid;
70accc14
MD
373 if (v) {
374 struct ctf_clock *tc_clock;
375
376 tc_clock = g_hash_table_lookup(tc_clocks,
377 (gpointer) (unsigned long) v);
378 if (!tc_clock) {
fa709ab2
MD
379 /*
380 * For now, we only support CTF that has one
0716bb06 381 * single clock uuid or name (absolute ref).
fa709ab2
MD
382 */
383 if (g_hash_table_size(tc_clocks) > 0) {
384 fprintf(stderr, "[error] Only CTF traces with a single clock description are supported by this babeltrace version.\n");
385 }
0716bb06
MD
386 if (!clock_match->tc->offset_nr) {
387 clock_match->tc->offset_first =
388 (t_clock->offset_s * 1000000000ULL) + t_clock->offset;
389 clock_match->tc->delta_offset_first_sum = 0;
390 clock_match->tc->offset_nr++;
391 clock_match->tc->single_clock_offset_avg =
392 clock_match->tc->offset_first;
fa709ab2 393 }
70accc14
MD
394 g_hash_table_insert(tc_clocks,
395 (gpointer) (unsigned long) v,
396 value);
397 } else {
398 int64_t diff_ns;
399
400 /*
401 * Check that the offsets match. If not, warn
402 * the user that we do an arbitrary choice.
403 */
404 diff_ns = tc_clock->offset_s;
405 diff_ns -= t_clock->offset_s;
406 diff_ns *= 1000000000ULL;
407 diff_ns += tc_clock->offset;
408 diff_ns -= t_clock->offset;
409 printf_debug("Clock \"%s\" offset between traces has a delta of %" PRIu64 " ns.",
410 g_quark_to_string(tc_clock->name),
411 diff_ns < 0 ? -diff_ns : diff_ns);
412 if (diff_ns > 10000) {
0716bb06 413 fprintf(stderr, "[warning] Clock \"%s\" offset differs between traces (delta %" PRIu64 " ns). Using average.\n",
fa709ab2
MD
414 g_quark_to_string(tc_clock->name),
415 diff_ns < 0 ? -diff_ns : diff_ns);
70accc14 416 }
0716bb06
MD
417 /* Compute average */
418 clock_match->tc->delta_offset_first_sum +=
419 (t_clock->offset_s * 1000000000ULL) + t_clock->offset
420 - clock_match->tc->offset_first;
421 clock_match->tc->offset_nr++;
422 clock_match->tc->single_clock_offset_avg =
423 clock_match->tc->offset_first
424 + (clock_match->tc->delta_offset_first_sum / clock_match->tc->offset_nr);
70accc14
MD
425 }
426 }
afb48eae
AA
427}
428
a44bc4c9
MD
429/*
430 * Whenever we add a trace to the trace collection, check that we can
431 * correlate this trace with at least one other clock in the trace.
432 */
433static int trace_collection_add(struct trace_collection *tc,
434 struct trace_descriptor *td)
afb48eae 435{
a44bc4c9
MD
436 struct ctf_trace *trace = container_of(td, struct ctf_trace, parent);
437
afb48eae 438 g_ptr_array_add(tc->array, td);
fa709ab2 439 trace->collection = tc;
a44bc4c9
MD
440
441 if (tc->array->len > 1) {
442 struct clock_match clock_match = {
443 .clocks = tc->clocks,
444 .clock_match = NULL,
fa709ab2 445 .tc = NULL,
a44bc4c9
MD
446 };
447
448 /*
449 * With two or more traces, we need correlation info
450 * avalable.
451 */
452 g_hash_table_foreach(trace->clocks,
453 check_clock_match,
454 &clock_match);
455 if (!clock_match.clock_match) {
456 fprintf(stderr, "[error] No clocks can be correlated and multiple traces are added to the collection.\n");
457 goto error;
458 }
459 }
fa709ab2
MD
460
461 {
462 struct clock_match clock_match = {
463 .clocks = tc->clocks,
464 .clock_match = NULL,
465 .tc = tc,
466 };
467
468 /*
469 * Add each clock from the trace clocks into the trace
470 * collection clocks.
471 */
472 g_hash_table_foreach(trace->clocks,
473 clock_add,
474 &clock_match);
475 }
a44bc4c9
MD
476 return 0;
477error:
478 return -EPERM;
afb48eae
AA
479}
480
95d36295
JD
481int convert_trace(struct trace_descriptor *td_write,
482 struct bt_context *ctx)
483{
e8c92a62 484 struct bt_iter *iter;
95d36295
JD
485 struct ctf_stream *stream;
486 struct ctf_stream_event *event;
487 struct ctf_text_stream_pos *sout;
e8c92a62 488 struct bt_iter_pos begin_pos;
95d36295
JD
489 int ret;
490
491 sout = container_of(td_write, struct ctf_text_stream_pos,
492 trace_descriptor);
493
494 begin_pos.type = BT_SEEK_BEGIN;
e8c92a62 495 iter = bt_iter_create(ctx, &begin_pos, NULL);
95d36295
JD
496 if (!iter) {
497 ret = -1;
498 goto error_iter;
499 }
e8c92a62 500 while (bt_iter_read_event(iter, &stream, &event) == 0) {
95d36295
JD
501 ret = sout->parent.event_cb(&sout->parent, stream);
502 if (ret) {
3394d22e 503 fprintf(stderr, "[error] Writing event failed.\n");
95d36295
JD
504 goto end;
505 }
e8c92a62 506 ret = bt_iter_next(iter);
95d36295
JD
507 if (ret < 0)
508 goto end;
509 }
510 ret = 0;
511
512end:
e8c92a62 513 bt_iter_destroy(iter);
95d36295
JD
514error_iter:
515 return ret;
516}
517
518
afb48eae
AA
519/*
520 * traverse_dir() is the callback functiion for File Tree Walk (nftw).
521 * it receives the path of the current entry (file, dir, link..etc) with
522 * a flag to indicate the type of the entry.
523 * if the entry being visited is a directory and contains a metadata file,
524 * then open it for reading and save a trace_descriptor to that directory
525 * in the read trace collection.
526 */
527static int traverse_dir(const char *fpath, const struct stat *sb,
528 int tflag, struct FTW *ftwbuf)
529{
530 int dirfd;
531 int fd;
532 struct trace_descriptor *td_read;
a44bc4c9 533 int ret;
afb48eae
AA
534
535 if (tflag != FTW_D)
536 return 0;
537 dirfd = open(fpath, 0);
538 if (dirfd < 0) {
3394d22e 539 fprintf(stderr, "[error] unable to open trace "
afb48eae
AA
540 "directory file descriptor.\n");
541 return -1;
542 }
543 fd = openat(dirfd, "metadata", O_RDONLY);
544 if (fd < 0) {
545 close(dirfd);
546 } else {
547 close(fd);
548 close(dirfd);
5b80ddfb
MD
549 td_read = fmt_read->open_trace(fpath, O_RDONLY,
550 ctf_move_pos_slow, NULL);
afb48eae 551 if (!td_read) {
3394d22e 552 fprintf(stderr, "Error opening trace \"%s\" "
afb48eae
AA
553 "for reading.\n\n", fpath);
554 return -1; /* error */
555 }
a44bc4c9
MD
556 ret = trace_collection_add(&trace_collection_read, td_read);
557 if (ret) {
558 return -1;
559 }
afb48eae
AA
560 }
561 return 0; /* success */
562}
563
bbefb8dd 564int main(int argc, char **argv)
34ac0e6c
MD
565{
566 int ret;
afb48eae
AA
567 struct format *fmt_write;
568 struct trace_descriptor *td_write;
95d36295 569 struct bt_context *ctx;
34ac0e6c
MD
570
571 ret = parse_options(argc, argv);
572 if (ret < 0) {
3394d22e
MD
573 fprintf(stderr, "Error parsing options.\n\n");
574 usage(stderr);
34ac0e6c
MD
575 exit(EXIT_FAILURE);
576 } else if (ret > 0) {
577 exit(EXIT_SUCCESS);
578 }
579 printf_verbose("Verbose mode active.\n");
580 printf_debug("Debug mode active.\n");
581
bbefb8dd
MD
582 if (opt_input_format)
583 strlower(opt_input_format);
584 if (opt_output_format)
585 strlower(opt_output_format);
586
afb48eae 587 printf_verbose("Converting from directory: %s\n", opt_input_path);
34ac0e6c 588 printf_verbose("Converting from format: %s\n",
b61922b5 589 opt_input_format ? : "ctf <default>");
afb48eae 590 printf_verbose("Converting to directory: %s\n",
478b6389 591 opt_output_path ? : "<stdout>");
34ac0e6c 592 printf_verbose("Converting to format: %s\n",
b61922b5 593 opt_output_format ? : "text <default>");
bbefb8dd 594
b61922b5
MD
595 if (!opt_input_format)
596 opt_input_format = "ctf";
597 if (!opt_output_format)
598 opt_output_format = "text";
bbefb8dd
MD
599 fmt_read = bt_lookup_format(g_quark_from_static_string(opt_input_format));
600 if (!fmt_read) {
3394d22e 601 fprintf(stderr, "[error] Format \"%s\" is not supported.\n\n",
bbefb8dd
MD
602 opt_input_format);
603 exit(EXIT_FAILURE);
604 }
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605 fmt_write = bt_lookup_format(g_quark_from_static_string(opt_output_format));
606 if (!fmt_write) {
3394d22e 607 fprintf(stderr, "[error] format \"%s\" is not supported.\n\n",
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608 opt_output_format);
609 exit(EXIT_FAILURE);
610 }
611
afb48eae
AA
612 /*
613 * pass the input path to nftw() .
614 * specify traverse_dir() as the callback function.
615 * depth = 10 which is the max number of file descriptors
616 * that nftw() can open at a given time.
617 * flags = 0 check nftw documentation for more info .
618 */
619 init_trace_collection(&trace_collection_read);
620 ret = nftw(opt_input_path, traverse_dir, 10, 0);
621 if (ret != 0) {
3394d22e 622 fprintf(stderr, "[error] opening trace \"%s\" for reading.\n\n",
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623 opt_input_path);
624 goto error_td_read;
625 }
afb48eae 626 if (trace_collection_read.array->len == 0) {
3394d22e 627 fprintf(stderr, "[warning] no metadata file was found."
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AA
628 " no output was generated\n");
629 return 0;
630 }
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631 ctx = bt_context_create(&trace_collection_read);
632 if (!ctx) {
3394d22e 633 fprintf(stderr, "Error allocating a new context\n");
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634 goto error_td_read;
635 }
5b80ddfb 636 td_write = fmt_write->open_trace(opt_output_path, O_RDWR, NULL, NULL);
bbefb8dd 637 if (!td_write) {
3394d22e 638 fprintf(stderr, "Error opening trace \"%s\" for writing.\n\n",
b61922b5 639 opt_output_path ? : "<none>");
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640 goto error_td_write;
641 }
847bf71a 642
95d36295 643 ret = convert_trace(td_write, ctx);
46322b33 644 if (ret) {
3394d22e 645 fprintf(stderr, "Error printing trace.\n\n");
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MD
646 goto error_copy_trace;
647 }
847bf71a 648
bbefb8dd 649 fmt_write->close_trace(td_write);
afb48eae 650 finalize_trace_collection(&trace_collection_read);
95d36295 651 bt_context_destroy(ctx);
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AA
652 printf_verbose("finished converting. Output written to:\n%s\n",
653 opt_output_path ? : "<stdout>");
bbefb8dd 654 exit(EXIT_SUCCESS);
34ac0e6c 655
bbefb8dd 656 /* Error handling */
46322b33 657error_copy_trace:
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658 fmt_write->close_trace(td_write);
659error_td_write:
afb48eae 660 finalize_trace_collection(&trace_collection_read);
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661error_td_read:
662 exit(EXIT_FAILURE);
4c8bfb7e 663}
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