Don't ever support named struct, enum, variant declaration within structures
[babeltrace.git] / converter / babeltrace-log.c
CommitLineData
8c572eba 1/*
b522ac18 2 * babeltrace-log.c
8c572eba 3 *
b522ac18 4 * BabelTrace - Convert Text Log to CTF
8c572eba
MD
5 *
6 * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * Depends on glibc 2.10 for getline().
19 */
20
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MD
21#include <sys/types.h>
22#include <sys/stat.h>
23#include <fcntl.h>
24#include <sys/mman.h>
989c73bc 25#include <dirent.h>
90219914 26#include <stdio.h>
989c73bc 27#include <stdlib.h>
90219914
MD
28#include <stdint.h>
29#include <unistd.h>
30#include <errno.h>
31#include <uuid/uuid.h>
32#include <string.h>
989c73bc 33#include <endian.h>
90219914 34
8c572eba
MD
35#include <babeltrace/babeltrace.h>
36#include <babeltrace/ctf/types.h>
37
bfe09576 38#define USEC_PER_SEC 1000000UL
ca8b2b02 39
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40#ifndef UUID_STR_LEN
41#define UUID_STR_LEN 37 /* With \0 */
42#endif
43
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44int babeltrace_debug, babeltrace_verbose;
45
46static char *s_outputname;
47static int s_timestamp;
48static uuid_t s_uuid;
49
b522ac18
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50/* Metadata format string */
51static const char metadata_fmt[] =
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52"typealias integer { size = 8; align = 8; signed = false; } := uint8_t;\n"
53"typealias integer { size = 32; align = 32; signed = false; } := uint32_t;\n"
54"\n"
55"trace {\n"
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56" major = %u;\n" /* major (e.g. 0) */
57" minor = %u;\n" /* minor (e.g. 1) */
b522ac18 58" uuid = \"%s\";\n" /* UUID */
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59" byte_order = %s;\n" /* be or le */
60" packet.header := struct {\n"
61" uint32_t magic;\n"
62" uint8_t trace_uuid[16];\n"
63" };\n"
64"};\n"
65"\n"
66"stream {\n"
67" packet.context := struct {\n"
68" uint32_t content_size;\n"
69" uint32_t packet_size;\n"
70" };\n"
ca8b2b02 71"%s" /* Stream event header (opt.) */
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72"};\n"
73"\n"
74"event {\n"
75" name = string;\n"
76" fields := struct { string str; };\n"
77"};\n";
78
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79static const char metadata_stream_event_header_timestamp[] =
80" typealias integer { size = 64; align = 64; signed = false; } := uint64_t;\n"
81" event.header := struct {\n"
82" uint64_t timestamp;\n"
83" };\n";
8c572eba 84
b522ac18
MD
85static
86void print_metadata(FILE *fp)
87{
88 char uuid_str[UUID_STR_LEN];
89
90 uuid_unparse(s_uuid, uuid_str);
91 fprintf(fp, metadata_fmt,
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92 BABELTRACE_VERSION_MAJOR,
93 BABELTRACE_VERSION_MINOR,
b522ac18 94 uuid_str,
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95 BYTE_ORDER == LITTLE_ENDIAN ? "le" : "be",
96 s_timestamp ? metadata_stream_event_header_timestamp : "");
b522ac18
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97}
98
8c572eba 99static
46322b33 100void write_packet_header(struct ctf_stream_pos *pos, uuid_t uuid)
8c572eba 101{
46322b33 102 struct ctf_stream_pos dummy;
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103
104 /* magic */
46322b33
MD
105 ctf_dummy_pos(pos, &dummy);
106 ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
107 ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
108 assert(!ctf_pos_packet(&dummy));
8c572eba 109
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MD
110 ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT);
111 *(uint32_t *) ctf_get_pos_addr(pos) = 0xC1FC1FC1;
112 ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT);
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113
114 /* trace_uuid */
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MD
115 ctf_dummy_pos(pos, &dummy);
116 ctf_align_pos(&dummy, sizeof(uint8_t) * CHAR_BIT);
117 ctf_move_pos(&dummy, 16 * CHAR_BIT);
118 assert(!ctf_pos_packet(&dummy));
119
120 ctf_align_pos(pos, sizeof(uint8_t) * CHAR_BIT);
121 memcpy(ctf_get_pos_addr(pos), uuid, 16);
122 ctf_move_pos(pos, 16 * CHAR_BIT);
8c572eba
MD
123}
124
125static
46322b33 126void write_packet_context(struct ctf_stream_pos *pos)
8c572eba 127{
46322b33 128 struct ctf_stream_pos dummy;
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129
130 /* content_size */
46322b33
MD
131 ctf_dummy_pos(pos, &dummy);
132 ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
133 ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
134 assert(!ctf_pos_packet(&dummy));
8c572eba 135
46322b33
MD
136 ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT);
137 *(uint32_t *) ctf_get_pos_addr(pos) = -1U; /* Not known yet */
138 pos->content_size_loc = (uint32_t *) ctf_get_pos_addr(pos);
139 ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT);
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140
141 /* packet_size */
46322b33
MD
142 ctf_dummy_pos(pos, &dummy);
143 ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
144 ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT);
145 assert(!ctf_pos_packet(&dummy));
8c572eba 146
46322b33
MD
147 ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT);
148 *(uint32_t *) ctf_get_pos_addr(pos) = pos->packet_size;
149 ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT);
8c572eba
MD
150}
151
ca8b2b02
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152static
153void write_event_header(struct ctf_stream_pos *pos, char *line,
154 char **tline, size_t len, size_t *tlen,
155 uint64_t *ts)
156{
bfe09576 157 unsigned long sec, usec;
ca8b2b02
MD
158 int ret;
159
160 if (!s_timestamp)
161 return;
162
163 /* Only need to be executed on first pass (dummy) */
164 if (pos->dummy) {
165 /* Extract time from input line */
bfe09576 166 ret = sscanf(line, "[%lu.%lu] ", &sec, &usec);
ca8b2b02
MD
167 if (ret == 2) {
168 *tline = strchr(line, ']');
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169 assert(*tline);
170 (*tline)++;
171 if ((*tline)[0] == ' ') {
ca8b2b02 172 (*tline)++;
bfe09576 173 }
ca8b2b02 174 *tlen = len + line - *tline;
bfe09576 175 *ts = (uint64_t) sec * USEC_PER_SEC + (uint64_t) usec;
ca8b2b02
MD
176 }
177 }
178 /* timestamp */
179 ctf_align_pos(pos, sizeof(uint64_t) * CHAR_BIT);
180 if (!pos->dummy)
181 *(uint32_t *) ctf_get_pos_addr(pos) = *ts;
182 ctf_move_pos(pos, sizeof(uint64_t) * CHAR_BIT);
183}
184
8c572eba 185static
46322b33 186void trace_string(char *line, struct ctf_stream_pos *pos, size_t len)
8c572eba 187{
46322b33 188 struct ctf_stream_pos dummy;
8c572eba 189 int attempt = 0;
ca8b2b02
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190 char *tline = line; /* tline is start of text, after timestamp */
191 size_t tlen = len;
192 uint64_t ts = 0;
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193
194 printf_debug("read: %s\n", line);
195retry:
46322b33 196 ctf_dummy_pos(pos, &dummy);
ca8b2b02 197 write_event_header(&dummy, line, &tline, len, &tlen, &ts);
46322b33 198 ctf_align_pos(&dummy, sizeof(uint8_t) * CHAR_BIT);
ca8b2b02 199 ctf_move_pos(&dummy, tlen * CHAR_BIT);
46322b33 200 if (ctf_pos_packet(&dummy)) {
46322b33 201 ctf_pos_pad_packet(pos);
8c572eba
MD
202 write_packet_header(pos, s_uuid);
203 write_packet_context(pos);
204 if (attempt++ == 1) {
205 fprintf(stdout, "[Error] Line too large for packet size (%zukB) (discarded)\n",
206 pos->packet_size / CHAR_BIT / 1024);
207 return;
208 }
209 goto retry;
210 }
211
ca8b2b02 212 write_event_header(pos, line, &tline, len, &tlen, &ts);
46322b33 213 ctf_align_pos(pos, sizeof(uint8_t) * CHAR_BIT);
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214 memcpy(ctf_get_pos_addr(pos), tline, tlen);
215 ctf_move_pos(pos, tlen * CHAR_BIT);
8c572eba
MD
216}
217
218static
219void trace_text(FILE *input, int output)
220{
46322b33 221 struct ctf_stream_pos pos;
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222 ssize_t len;
223 char *line = NULL, *nl;
224 size_t linesize;
225
989c73bc 226 ctf_init_pos(&pos, output, O_RDWR);
8c572eba
MD
227
228 write_packet_header(&pos, s_uuid);
229 write_packet_context(&pos);
230 for (;;) {
231 len = getline(&line, &linesize, input);
232 if (len < 0)
233 break;
234 nl = strrchr(line, '\n');
235 if (nl)
236 *nl = '\0';
237 trace_string(line, &pos, nl - line + 1);
238 }
46322b33 239 ctf_fini_pos(&pos);
8c572eba 240}
90219914 241
ca8b2b02
MD
242static
243void usage(FILE *fp)
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244{
245 fprintf(fp, "BabelTrace Log Converter %u.%u\n",
246 BABELTRACE_VERSION_MAJOR,
247 BABELTRACE_VERSION_MINOR);
248 fprintf(fp, "\n");
249 fprintf(fp, "Convert for a text log (read from standard input) to CTF.\n");
250 fprintf(fp, "\n");
78893e6e 251 fprintf(fp, "usage : babeltrace-log [OPTIONS] OUTPUT\n");
989c73bc
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252 fprintf(fp, "\n");
253 fprintf(fp, " OUTPUT Output trace path\n");
254 fprintf(fp, "\n");
78893e6e
MD
255 fprintf(fp, " -t With timestamps (format: [sec.usec] string\\n)\n");
256 fprintf(fp, "\n");
989c73bc
MD
257}
258
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MD
259static
260int parse_args(int argc, char **argv)
261{
262 int i;
263
264 for (i = 1; i < argc; i++) {
265 if (!strcmp(argv[i], "-t"))
266 s_timestamp = 1;
267 else
268 s_outputname = argv[i];
269 }
270 if (!s_outputname)
271 return -EINVAL;
272 return 0;
273}
274
90219914
MD
275int main(int argc, char **argv)
276{
b522ac18 277 int fd, metadata_fd, ret;
989c73bc
MD
278 DIR *dir;
279 int dir_fd;
b522ac18 280 FILE *metadata_fp;
90219914 281
ca8b2b02
MD
282 ret = parse_args(argc, argv);
283 if (ret) {
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MD
284 usage(stdout);
285 goto error;
90219914 286 }
90219914 287
ca8b2b02 288 ret = mkdir(s_outputname, S_IRWXU|S_IRWXG);
90219914 289 if (ret) {
989c73bc
MD
290 perror("mkdir");
291 goto error;
292 }
293
ca8b2b02 294 dir = opendir(s_outputname);
989c73bc
MD
295 if (!dir) {
296 perror("opendir");
297 goto error_rmdir;
298 }
299 dir_fd = dirfd(dir);
300 if (dir_fd < 0) {
301 perror("dirfd");
302 goto error_closedir;
303 }
304
305 fd = openat(dir_fd, "datastream", O_RDWR|O_CREAT,
306 S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP);
307 if (fd < 0) {
308 perror("openat");
309 goto error_closedirfd;
90219914 310 }
90219914 311
b522ac18
MD
312 metadata_fd = openat(dir_fd, "metadata", O_RDWR|O_CREAT,
313 S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP);
314 if (fd < 0) {
315 perror("openat");
316 goto error_closedatastream;
317 }
318 metadata_fp = fdopen(metadata_fd, "w");
319 if (!metadata_fp) {
320 perror("fdopen");
321 goto error_closemetadatafd;
322 }
323
324 uuid_generate(s_uuid);
325 print_metadata(metadata_fp);
8c572eba 326 trace_text(stdin, fd);
989c73bc 327
90219914 328 close(fd);
989c73bc
MD
329 exit(EXIT_SUCCESS);
330
331 /* error handling */
b522ac18
MD
332error_closemetadatafd:
333 ret = close(metadata_fd);
334 if (ret)
335 perror("close");
336error_closedatastream:
337 ret = close(fd);
338 if (ret)
339 perror("close");
989c73bc
MD
340error_closedirfd:
341 ret = close(dir_fd);
342 if (ret)
343 perror("close");
344error_closedir:
345 ret = closedir(dir);
346 if (ret)
347 perror("closedir");
348error_rmdir:
ca8b2b02 349 ret = rmdir(s_outputname);
989c73bc
MD
350 if (ret)
351 perror("rmdir");
352error:
353 exit(EXIT_FAILURE);
90219914 354}
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