4 * Babeltrace Trace Converter
6 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
8 * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
21 #define _XOPEN_SOURCE 700
22 #include <babeltrace/babeltrace.h>
23 #include <babeltrace/format.h>
29 #include <sys/types.h>
35 #define DEFAULT_FILE_ARRAY_SIZE 1
36 static char *opt_input_format
;
37 static char *opt_output_format
;
39 static const char *opt_input_path
;
40 static const char *opt_output_path
;
42 int babeltrace_verbose
, babeltrace_debug
;
45 static struct trace_collection trace_collection_read
;
46 static struct format
*fmt_read
;
48 void strlower(char *str
)
65 static struct poptOption long_options
[] = {
66 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
67 { "input-format", 'i', POPT_ARG_STRING
, &opt_input_format
, OPT_NONE
, NULL
, NULL
},
68 { "output-format", 'o', POPT_ARG_STRING
, &opt_output_format
, OPT_NONE
, NULL
, NULL
},
69 { "help", 'h', POPT_ARG_NONE
, NULL
, OPT_HELP
, NULL
, NULL
},
70 { "list", 'l', POPT_ARG_NONE
, NULL
, OPT_LIST
, NULL
, NULL
},
71 { "verbose", 'v', POPT_ARG_NONE
, NULL
, OPT_VERBOSE
, NULL
, NULL
},
72 { "debug", 'd', POPT_ARG_NONE
, NULL
, OPT_DEBUG
, NULL
, NULL
},
73 { "names", 'n', POPT_ARG_NONE
, NULL
, OPT_NAMES
, NULL
, NULL
},
74 { NULL
, 0, 0, NULL
, 0, NULL
, NULL
},
77 static void list_formats(FILE *fp
)
80 bt_fprintf_format_list(fp
);
83 static void usage(FILE *fp
)
85 fprintf(fp
, "BabelTrace Trace Converter %u.%u\n\n",
86 BABELTRACE_VERSION_MAJOR
,
87 BABELTRACE_VERSION_MINOR
);
88 fprintf(fp
, "usage : babeltrace [OPTIONS] INPUT <OUTPUT>\n");
90 fprintf(fp
, " INPUT Input trace path\n");
91 fprintf(fp
, " OUTPUT Output trace path (default: stdout)\n");
93 fprintf(fp
, " -i, --input-format FORMAT Input trace format (default: ctf)\n");
94 fprintf(fp
, " -o, --output-format FORMAT Output trace format (default: text)\n");
96 fprintf(fp
, " -h, --help This help message\n");
97 fprintf(fp
, " -l, --list List available formats\n");
98 fprintf(fp
, " -v, --verbose Verbose mode\n");
99 fprintf(fp
, " -d, --debug Debug mode\n");
100 fprintf(fp
, " -n, --names Print field names\n");
106 * Return 0 if caller should continue, < 0 if caller should return
107 * error, > 0 if caller should exit without reporting error.
109 static int parse_options(int argc
, char **argv
)
116 return 1; /* exit cleanly */
119 pc
= poptGetContext(NULL
, argc
, (const char **) argv
, long_options
, 0);
120 poptReadDefaultConfig(pc
, 0);
122 while ((opt
= poptGetNextOpt(pc
)) != -1) {
126 ret
= 1; /* exit cleanly */
129 list_formats(stdout
);
133 babeltrace_verbose
= 1;
136 babeltrace_debug
= 1;
147 opt_input_path
= poptGetArg(pc
);
148 if (!opt_input_path
) {
152 opt_output_path
= poptGetArg(pc
);
160 static void init_trace_collection(struct trace_collection
*tc
)
162 tc
->array
= g_ptr_array_sized_new(DEFAULT_FILE_ARRAY_SIZE
);
166 * finalize_trace_collection() closes the opened traces for read
167 * and free the memory allocated for trace collection
169 static void finalize_trace_collection(struct trace_collection
*tc
)
173 for (i
= 0; i
< tc
->array
->len
; i
++) {
174 struct trace_descriptor
*temp
=
175 g_ptr_array_index(tc
->array
, i
);
176 fmt_read
->close_trace(temp
);
178 g_ptr_array_free(tc
->array
, TRUE
);
181 static void trace_collection_add(struct trace_collection
*tc
,
182 struct trace_descriptor
*td
)
184 g_ptr_array_add(tc
->array
, td
);
188 * traverse_dir() is the callback functiion for File Tree Walk (nftw).
189 * it receives the path of the current entry (file, dir, link..etc) with
190 * a flag to indicate the type of the entry.
191 * if the entry being visited is a directory and contains a metadata file,
192 * then open it for reading and save a trace_descriptor to that directory
193 * in the read trace collection.
195 static int traverse_dir(const char *fpath
, const struct stat
*sb
,
196 int tflag
, struct FTW
*ftwbuf
)
200 struct trace_descriptor
*td_read
;
204 dirfd
= open(fpath
, 0);
206 fprintf(stdout
, "[error] unable to open trace "
207 "directory file descriptor.\n");
210 fd
= openat(dirfd
, "metadata", O_RDONLY
);
216 td_read
= fmt_read
->open_trace(fpath
, O_RDONLY
);
218 fprintf(stdout
, "Error opening trace \"%s\" "
219 "for reading.\n\n", fpath
);
220 return -1; /* error */
222 trace_collection_add(&trace_collection_read
, td_read
);
224 return 0; /* success */
227 int main(int argc
, char **argv
)
230 struct format
*fmt_write
;
231 struct trace_descriptor
*td_write
;
233 ret
= parse_options(argc
, argv
);
235 fprintf(stdout
, "Error parsing options.\n\n");
238 } else if (ret
> 0) {
241 printf_verbose("Verbose mode active.\n");
242 printf_debug("Debug mode active.\n");
244 if (opt_input_format
)
245 strlower(opt_input_format
);
246 if (opt_output_format
)
247 strlower(opt_output_format
);
249 printf_verbose("Converting from directory: %s\n", opt_input_path
);
250 printf_verbose("Converting from format: %s\n",
251 opt_input_format
? : "ctf <default>");
252 printf_verbose("Converting to directory: %s\n",
253 opt_output_path
? : "<stdout>");
254 printf_verbose("Converting to format: %s\n",
255 opt_output_format
? : "text <default>");
257 if (!opt_input_format
)
258 opt_input_format
= "ctf";
259 if (!opt_output_format
)
260 opt_output_format
= "text";
261 fmt_read
= bt_lookup_format(g_quark_from_static_string(opt_input_format
));
263 fprintf(stdout
, "[error] Format \"%s\" is not supported.\n\n",
267 fmt_write
= bt_lookup_format(g_quark_from_static_string(opt_output_format
));
269 fprintf(stdout
, "[error] format \"%s\" is not supported.\n\n",
275 * pass the input path to nftw() .
276 * specify traverse_dir() as the callback function.
277 * depth = 10 which is the max number of file descriptors
278 * that nftw() can open at a given time.
279 * flags = 0 check nftw documentation for more info .
281 init_trace_collection(&trace_collection_read
);
282 ret
= nftw(opt_input_path
, traverse_dir
, 10, 0);
284 fprintf(stdout
, "[error] opening trace \"%s\" for reading.\n\n",
288 if (trace_collection_read
.array
->len
== 0) {
289 fprintf(stdout
, "[warning] no metadata file was found."
290 " no output was generated\n");
294 td_write
= fmt_write
->open_trace(opt_output_path
, O_RDWR
);
296 fprintf(stdout
, "Error opening trace \"%s\" for writing.\n\n",
297 opt_output_path
? : "<none>");
301 ret
= convert_trace(td_write
, &trace_collection_read
);
303 fprintf(stdout
, "Error printing trace.\n\n");
304 goto error_copy_trace
;
307 fmt_write
->close_trace(td_write
);
308 finalize_trace_collection(&trace_collection_read
);
309 printf_verbose("finished converting. Output written to:\n%s\n",
310 opt_output_path
? : "<stdout>");
315 fmt_write
->close_trace(td_write
);
317 finalize_trace_collection(&trace_collection_read
);