Update libpopt dependency to 1.13
[babeltrace.git] / converter / babeltrace.c
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1/*
2 * babeltrace.c
3 *
4 * Babeltrace Trace Converter
5 *
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6 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
7 *
8 * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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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>
70bd0a12 23#include <babeltrace/babeltrace-internal.h>
7fb21036 24#include <babeltrace/format.h>
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25#include <popt.h>
26#include <errno.h>
27#include <stdlib.h>
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28#include <ctype.h>
29#include <sys/stat.h>
30#include <sys/types.h>
31#include <fcntl.h>
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32#include <ftw.h>
33#include <dirent.h>
34#include <unistd.h>
4c8bfb7e 35
afb48eae 36#define DEFAULT_FILE_ARRAY_SIZE 1
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37static char *opt_input_format;
38static char *opt_output_format;
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39
40static const char *opt_input_path;
41static const char *opt_output_path;
42
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43static struct trace_collection trace_collection_read;
44static struct format *fmt_read;
45
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46void strlower(char *str)
47{
48 while (*str) {
49 *str = tolower(*str);
50 str++;
51 }
52}
53
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54enum {
55 OPT_NONE = 0,
56 OPT_HELP,
7fb21036 57 OPT_LIST,
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58 OPT_VERBOSE,
59 OPT_DEBUG,
d63ca2cd 60 OPT_NAMES,
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61};
62
63static struct poptOption long_options[] = {
64 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
65 { "input-format", 'i', POPT_ARG_STRING, &opt_input_format, OPT_NONE, NULL, NULL },
66 { "output-format", 'o', POPT_ARG_STRING, &opt_output_format, OPT_NONE, NULL, NULL },
67 { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL },
7fb21036 68 { "list", 'l', POPT_ARG_NONE, NULL, OPT_LIST, NULL, NULL },
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69 { "verbose", 'v', POPT_ARG_NONE, NULL, OPT_VERBOSE, NULL, NULL },
70 { "debug", 'd', POPT_ARG_NONE, NULL, OPT_DEBUG, NULL, NULL },
cba1661c 71 { "names", 'n', POPT_ARG_STRING, NULL, OPT_NAMES, NULL, NULL },
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72 { NULL, 0, 0, NULL, 0, NULL, NULL },
73};
74
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75static void list_formats(FILE *fp)
76{
77 fprintf(fp, "\n");
78 bt_fprintf_format_list(fp);
79}
80
34ac0e6c 81static void usage(FILE *fp)
4c8bfb7e 82{
00f7fbf0 83 fprintf(fp, "BabelTrace Trace Converter %s\n\n", VERSION);
4d5678b9 84 fprintf(fp, "usage : babeltrace [OPTIONS] INPUT <OUTPUT>\n");
34ac0e6c 85 fprintf(fp, "\n");
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86 fprintf(fp, " INPUT Input trace path\n");
87 fprintf(fp, " OUTPUT Output trace path (default: stdout)\n");
34ac0e6c 88 fprintf(fp, "\n");
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89 fprintf(fp, " -i, --input-format FORMAT Input trace format (default: ctf)\n");
90 fprintf(fp, " -o, --output-format FORMAT Output trace format (default: text)\n");
34ac0e6c 91 fprintf(fp, "\n");
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92 fprintf(fp, " -h, --help This help message\n");
93 fprintf(fp, " -l, --list List available formats\n");
94 fprintf(fp, " -v, --verbose Verbose mode\n");
cba1661c 95 fprintf(fp, " (or set BABELTRACE_VERBOSE environment variable)\n");
4d5678b9 96 fprintf(fp, " -d, --debug Debug mode\n");
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97 fprintf(fp, " (or set BABELTRACE_DEBUG environment variable)\n");
98 fprintf(fp, " -n, --names name1<,name2,...> Print field names.\n");
99 fprintf(fp, " Available field names:\n");
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100 fprintf(fp, " (payload OR args OR arg)\n");
101 fprintf(fp, " all, scope, header, (context OR ctx)\n");
8c250d87 102 fprintf(fp, " trace, trace:domain, trace:procname, trace:vpid\n");
cba1661c 103 fprintf(fp, " (payload active by default)\n");
7fb21036 104 list_formats(fp);
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105 fprintf(fp, "\n");
106}
107
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108static int get_names_args(poptContext *pc)
109{
110 char *str, *strlist, *strctx;
111
112 opt_payload_field_names = 0;
113 strlist = (char *) poptGetOptArg(*pc);
114 if (!strlist) {
115 return -EINVAL;
116 }
117 str = strtok_r(strlist, ",", &strctx);
118 do {
119 if (!strcmp(str, "all"))
120 opt_all_field_names = 1;
121 else if (!strcmp(str, "scope"))
122 opt_scope_field_names = 1;
123 else if (!strcmp(str, "context") || !strcmp(str, "ctx"))
124 opt_context_field_names = 1;
125 else if (!strcmp(str, "header"))
126 opt_header_field_names = 1;
127 else if (!strcmp(str, "payload") || !strcmp(str, "args") || !strcmp(str, "arg"))
128 opt_payload_field_names = 1;
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129 else if (!strcmp(str, "trace"))
130 opt_trace_name = 1;
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131 else if (!strcmp(str, "trace:domain"))
132 opt_trace_domain = 1;
133 else if (!strcmp(str, "trace:procname"))
134 opt_trace_procname = 1;
135 else if (!strcmp(str, "trace:vpid"))
136 opt_trace_vpid = 1;
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137 else {
138 fprintf(stdout, "[error] unknown field name type %s\n", str);
139 return -EINVAL;
140 }
141 } while ((str = strtok_r(NULL, ",", &strctx)));
142 return 0;
143}
144
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145/*
146 * Return 0 if caller should continue, < 0 if caller should return
147 * error, > 0 if caller should exit without reporting error.
148 */
bbefb8dd 149static int parse_options(int argc, char **argv)
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150{
151 poptContext pc;
152 int opt, ret = 0;
153
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154 if (argc == 1) {
155 usage(stdout);
156 return 1; /* exit cleanly */
157 }
158
bbefb8dd 159 pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0);
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160 poptReadDefaultConfig(pc, 0);
161
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162 /* set default */
163 opt_payload_field_names = 1;
164
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165 while ((opt = poptGetNextOpt(pc)) != -1) {
166 switch (opt) {
167 case OPT_HELP:
7fb21036 168 usage(stdout);
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169 ret = 1; /* exit cleanly */
170 goto end;
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171 case OPT_LIST:
172 list_formats(stdout);
173 ret = 1;
174 goto end;
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175 case OPT_VERBOSE:
176 babeltrace_verbose = 1;
177 break;
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178 case OPT_NAMES:
179 if (get_names_args(&pc)) {
180 ret = -EINVAL;
181 goto end;
182 }
183 break;
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184 case OPT_DEBUG:
185 babeltrace_debug = 1;
186 break;
187 default:
188 ret = -EINVAL;
189 goto end;
190 }
191 }
192
193 opt_input_path = poptGetArg(pc);
194 if (!opt_input_path) {
195 ret = -EINVAL;
196 goto end;
197 }
198 opt_output_path = poptGetArg(pc);
cba1661c 199
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200end:
201 if (pc) {
202 poptFreeContext(pc);
203 }
204 return ret;
205}
206
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207static void init_trace_collection(struct trace_collection *tc)
208{
209 tc->array = g_ptr_array_sized_new(DEFAULT_FILE_ARRAY_SIZE);
210}
211
212/*
213 * finalize_trace_collection() closes the opened traces for read
214 * and free the memory allocated for trace collection
215 */
216static void finalize_trace_collection(struct trace_collection *tc)
217{
218 int i;
219
220 for (i = 0; i < tc->array->len; i++) {
221 struct trace_descriptor *temp =
222 g_ptr_array_index(tc->array, i);
223 fmt_read->close_trace(temp);
224 }
225 g_ptr_array_free(tc->array, TRUE);
226}
227
228static void trace_collection_add(struct trace_collection *tc,
229 struct trace_descriptor *td)
230{
231 g_ptr_array_add(tc->array, td);
232}
233
234/*
235 * traverse_dir() is the callback functiion for File Tree Walk (nftw).
236 * it receives the path of the current entry (file, dir, link..etc) with
237 * a flag to indicate the type of the entry.
238 * if the entry being visited is a directory and contains a metadata file,
239 * then open it for reading and save a trace_descriptor to that directory
240 * in the read trace collection.
241 */
242static int traverse_dir(const char *fpath, const struct stat *sb,
243 int tflag, struct FTW *ftwbuf)
244{
245 int dirfd;
246 int fd;
247 struct trace_descriptor *td_read;
248
249 if (tflag != FTW_D)
250 return 0;
251 dirfd = open(fpath, 0);
252 if (dirfd < 0) {
253 fprintf(stdout, "[error] unable to open trace "
254 "directory file descriptor.\n");
255 return -1;
256 }
257 fd = openat(dirfd, "metadata", O_RDONLY);
258 if (fd < 0) {
259 close(dirfd);
260 } else {
261 close(fd);
262 close(dirfd);
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263 td_read = fmt_read->open_trace(opt_input_path,
264 fpath, O_RDONLY, ctf_move_pos_slow,
ae23d232 265 NULL);
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266 if (!td_read) {
267 fprintf(stdout, "Error opening trace \"%s\" "
268 "for reading.\n\n", fpath);
269 return -1; /* error */
270 }
271 trace_collection_add(&trace_collection_read, td_read);
272 }
273 return 0; /* success */
274}
275
bbefb8dd 276int main(int argc, char **argv)
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277{
278 int ret;
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279 struct format *fmt_write;
280 struct trace_descriptor *td_write;
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281
282 ret = parse_options(argc, argv);
283 if (ret < 0) {
bbefb8dd 284 fprintf(stdout, "Error parsing options.\n\n");
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285 usage(stdout);
286 exit(EXIT_FAILURE);
287 } else if (ret > 0) {
288 exit(EXIT_SUCCESS);
289 }
290 printf_verbose("Verbose mode active.\n");
291 printf_debug("Debug mode active.\n");
292
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293 if (opt_input_format)
294 strlower(opt_input_format);
295 if (opt_output_format)
296 strlower(opt_output_format);
297
afb48eae 298 printf_verbose("Converting from directory: %s\n", opt_input_path);
34ac0e6c 299 printf_verbose("Converting from format: %s\n",
b61922b5 300 opt_input_format ? : "ctf <default>");
afb48eae 301 printf_verbose("Converting to directory: %s\n",
478b6389 302 opt_output_path ? : "<stdout>");
34ac0e6c 303 printf_verbose("Converting to format: %s\n",
b61922b5 304 opt_output_format ? : "text <default>");
bbefb8dd 305
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306 if (!opt_input_format)
307 opt_input_format = "ctf";
308 if (!opt_output_format)
309 opt_output_format = "text";
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310 fmt_read = bt_lookup_format(g_quark_from_static_string(opt_input_format));
311 if (!fmt_read) {
c8b219a3 312 fprintf(stdout, "[error] Format \"%s\" is not supported.\n\n",
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313 opt_input_format);
314 exit(EXIT_FAILURE);
315 }
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316 fmt_write = bt_lookup_format(g_quark_from_static_string(opt_output_format));
317 if (!fmt_write) {
c8b219a3 318 fprintf(stdout, "[error] format \"%s\" is not supported.\n\n",
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319 opt_output_format);
320 exit(EXIT_FAILURE);
321 }
322
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323 /*
324 * pass the input path to nftw() .
325 * specify traverse_dir() as the callback function.
326 * depth = 10 which is the max number of file descriptors
327 * that nftw() can open at a given time.
328 * flags = 0 check nftw documentation for more info .
329 */
330 init_trace_collection(&trace_collection_read);
331 ret = nftw(opt_input_path, traverse_dir, 10, 0);
332 if (ret != 0) {
c8b219a3 333 fprintf(stdout, "[error] opening trace \"%s\" for reading.\n\n",
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334 opt_input_path);
335 goto error_td_read;
336 }
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337 if (trace_collection_read.array->len == 0) {
338 fprintf(stdout, "[warning] no metadata file was found."
339 " no output was generated\n");
340 return 0;
341 }
bbefb8dd 342
8c250d87 343 td_write = fmt_write->open_trace(NULL, opt_output_path, O_RDWR, NULL, NULL);
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344 if (!td_write) {
345 fprintf(stdout, "Error opening trace \"%s\" for writing.\n\n",
b61922b5 346 opt_output_path ? : "<none>");
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347 goto error_td_write;
348 }
847bf71a 349
afb48eae 350 ret = convert_trace(td_write, &trace_collection_read);
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351 if (ret) {
352 fprintf(stdout, "Error printing trace.\n\n");
353 goto error_copy_trace;
354 }
847bf71a 355
bbefb8dd 356 fmt_write->close_trace(td_write);
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357 finalize_trace_collection(&trace_collection_read);
358 printf_verbose("finished converting. Output written to:\n%s\n",
359 opt_output_path ? : "<stdout>");
bbefb8dd 360 exit(EXIT_SUCCESS);
34ac0e6c 361
bbefb8dd 362 /* Error handling */
46322b33 363error_copy_trace:
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364 fmt_write->close_trace(td_write);
365error_td_write:
afb48eae 366 finalize_trace_collection(&trace_collection_read);
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367error_td_read:
368 exit(EXIT_FAILURE);
4c8bfb7e 369}
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