Commit | Line | Data |
---|---|---|
fc93b2bd MD |
1 | /* |
2 | * BabelTrace - Common Trace Format (CTF) | |
3 | * | |
4 | * Format registration. | |
5 | * | |
64fa3fec MD |
6 | * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation |
7 | * | |
8 | * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
fc93b2bd | 9 | * |
ccd7e1c8 MD |
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: | |
fc93b2bd | 16 | * |
ccd7e1c8 MD |
17 | * The above copyright notice and this permission notice shall be included in |
18 | * all copies or substantial portions of the Software. | |
fc93b2bd MD |
19 | */ |
20 | ||
21 | #include <babeltrace/format.h> | |
22 | #include <babeltrace/ctf/types.h> | |
bbefb8dd | 23 | #include <babeltrace/ctf/metadata.h> |
70bd0a12 | 24 | #include <babeltrace/babeltrace-internal.h> |
0f980a35 | 25 | #include <inttypes.h> |
b4c19c1e | 26 | #include <stdio.h> |
0f980a35 MD |
27 | #include <uuid/uuid.h> |
28 | #include <sys/mman.h> | |
bbefb8dd | 29 | #include <errno.h> |
b4c19c1e | 30 | #include <endian.h> |
bbefb8dd | 31 | #include <sys/types.h> |
65102a8c | 32 | #include <sys/stat.h> |
bbefb8dd | 33 | #include <fcntl.h> |
65102a8c | 34 | #include <dirent.h> |
bbefb8dd | 35 | #include <glib.h> |
65102a8c MD |
36 | #include <unistd.h> |
37 | #include <stdlib.h> | |
38 | ||
65102a8c MD |
39 | #include "metadata/ctf-scanner.h" |
40 | #include "metadata/ctf-parser.h" | |
41 | #include "metadata/ctf-ast.h" | |
42 | ||
0f980a35 MD |
43 | /* |
44 | * We currently simply map a page to read the packet header and packet | |
8c572eba | 45 | * context to get the packet length and content length. (in bits) |
0f980a35 | 46 | */ |
8c572eba MD |
47 | #define MAX_PACKET_HEADER_LEN (getpagesize() * CHAR_BIT) |
48 | #define WRITE_PACKET_LEN (getpagesize() * 8 * CHAR_BIT) | |
0f980a35 MD |
49 | #define UUID_LEN 16 /* uuid by value len */ |
50 | ||
a0fe7d97 MD |
51 | #ifndef min |
52 | #define min(a, b) (((a) < (b)) ? (a) : (b)) | |
53 | #endif | |
54 | ||
7d97fad9 MD |
55 | #define NSEC_PER_SEC 1000000000ULL |
56 | ||
57 | int opt_clock_raw, | |
58 | opt_clock_seconds, | |
59 | opt_clock_date, | |
60 | opt_clock_gmt; | |
61 | ||
62 | uint64_t opt_clock_offset; | |
63 | ||
65102a8c | 64 | extern int yydebug; |
bbefb8dd | 65 | |
e9378815 | 66 | static |
5b80ddfb | 67 | struct trace_descriptor *ctf_open_trace(const char *path, int flags, |
b086c01a | 68 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, |
ae23d232 | 69 | int whence), FILE *metadata_fp); |
e9378815 | 70 | static |
f571dfb1 JD |
71 | struct trace_descriptor *ctf_open_mmap_trace( |
72 | struct mmap_stream_list *mmap_list, | |
73 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, int whence), | |
74 | FILE *metadata_fp); | |
75 | ||
76 | static | |
bbefb8dd | 77 | void ctf_close_trace(struct trace_descriptor *descriptor); |
fc93b2bd | 78 | |
1ae19169 MD |
79 | static |
80 | rw_dispatch read_dispatch_table[] = { | |
d11e9c49 MD |
81 | [ CTF_TYPE_INTEGER ] = ctf_integer_read, |
82 | [ CTF_TYPE_FLOAT ] = ctf_float_read, | |
83 | [ CTF_TYPE_ENUM ] = ctf_enum_read, | |
84 | [ CTF_TYPE_STRING ] = ctf_string_read, | |
85 | [ CTF_TYPE_STRUCT ] = ctf_struct_rw, | |
86 | [ CTF_TYPE_VARIANT ] = ctf_variant_rw, | |
81dee1bb MD |
87 | [ CTF_TYPE_ARRAY ] = ctf_array_read, |
88 | [ CTF_TYPE_SEQUENCE ] = ctf_sequence_read, | |
d11e9c49 MD |
89 | }; |
90 | ||
1ae19169 MD |
91 | static |
92 | rw_dispatch write_dispatch_table[] = { | |
d11e9c49 MD |
93 | [ CTF_TYPE_INTEGER ] = ctf_integer_write, |
94 | [ CTF_TYPE_FLOAT ] = ctf_float_write, | |
95 | [ CTF_TYPE_ENUM ] = ctf_enum_write, | |
96 | [ CTF_TYPE_STRING ] = ctf_string_write, | |
97 | [ CTF_TYPE_STRUCT ] = ctf_struct_rw, | |
98 | [ CTF_TYPE_VARIANT ] = ctf_variant_rw, | |
81dee1bb MD |
99 | [ CTF_TYPE_ARRAY ] = ctf_array_write, |
100 | [ CTF_TYPE_SEQUENCE ] = ctf_sequence_write, | |
d11e9c49 MD |
101 | }; |
102 | ||
1ae19169 | 103 | static |
d11e9c49 | 104 | struct format ctf_format = { |
bbefb8dd | 105 | .open_trace = ctf_open_trace, |
f571dfb1 | 106 | .open_mmap_trace = ctf_open_mmap_trace, |
bbefb8dd | 107 | .close_trace = ctf_close_trace, |
fc93b2bd MD |
108 | }; |
109 | ||
25ccc85b MD |
110 | /* |
111 | * Update stream current timestamp, keep at clock frequency. | |
112 | */ | |
2b9a764d MD |
113 | static |
114 | void ctf_update_timestamp(struct ctf_stream *stream, | |
115 | struct definition_integer *integer_definition) | |
116 | { | |
117 | struct declaration_integer *integer_declaration = | |
118 | integer_definition->declaration; | |
119 | uint64_t oldval, newval, updateval; | |
120 | ||
7f3f572b | 121 | if (unlikely(integer_declaration->len == 64)) { |
2b9a764d MD |
122 | stream->timestamp = integer_definition->value._unsigned; |
123 | return; | |
124 | } | |
125 | /* keep low bits */ | |
126 | oldval = stream->timestamp; | |
127 | oldval &= (1ULL << integer_declaration->len) - 1; | |
128 | newval = integer_definition->value._unsigned; | |
129 | /* Test for overflow by comparing low bits */ | |
130 | if (newval < oldval) | |
131 | newval += 1ULL << integer_declaration->len; | |
132 | /* updateval contains old high bits, and new low bits (sum) */ | |
133 | updateval = stream->timestamp; | |
134 | updateval &= ~((1ULL << integer_declaration->len) - 1); | |
135 | updateval += newval; | |
fca04958 | 136 | stream->prev_timestamp = stream->timestamp; |
2b9a764d MD |
137 | stream->timestamp = updateval; |
138 | } | |
139 | ||
25ccc85b MD |
140 | /* |
141 | * Print timestamp, rescaling clock frequency to nanoseconds and | |
142 | * applying offsets as needed (unix time). | |
143 | */ | |
7d97fad9 MD |
144 | void ctf_print_timestamp(FILE *fp, |
145 | struct ctf_stream *stream, | |
146 | uint64_t timestamp) | |
147 | { | |
148 | uint64_t ts_sec = 0, ts_nsec; | |
149 | struct ctf_trace *trace = stream->stream_class->trace; | |
150 | struct trace_collection *tc = trace->collection; | |
0716bb06 | 151 | uint64_t tc_offset = tc->single_clock_offset_avg; |
7d97fad9 | 152 | |
25ccc85b MD |
153 | if (stream->current_clock->freq == 1000000000ULL) { |
154 | ts_nsec = timestamp; | |
155 | } else { | |
156 | ts_nsec = (uint64_t) ((double) timestamp * 1000000000.0 | |
157 | / (double) stream->current_clock->freq); | |
158 | } | |
7d97fad9 MD |
159 | |
160 | /* Add offsets */ | |
0716bb06 MD |
161 | if (!opt_clock_raw) { |
162 | ts_nsec += tc_offset; | |
7d97fad9 MD |
163 | } |
164 | ts_sec += opt_clock_offset; | |
165 | ||
166 | ts_sec += ts_nsec / NSEC_PER_SEC; | |
167 | ts_nsec = ts_nsec % NSEC_PER_SEC; | |
168 | ||
169 | if (!opt_clock_seconds) { | |
170 | struct tm tm; | |
171 | time_t time_s = (time_t) ts_sec; | |
172 | ||
173 | if (!opt_clock_gmt) { | |
174 | struct tm *res; | |
175 | ||
176 | res = localtime_r(&time_s, &tm); | |
177 | if (!res) { | |
178 | fprintf(stderr, "[warning] Unable to get localtime.\n"); | |
179 | goto seconds; | |
180 | } | |
181 | } else { | |
182 | struct tm *res; | |
183 | ||
184 | res = gmtime_r(&time_s, &tm); | |
185 | if (!res) { | |
186 | fprintf(stderr, "[warning] Unable to get gmtime.\n"); | |
187 | goto seconds; | |
188 | } | |
189 | } | |
190 | if (opt_clock_date) { | |
191 | char timestr[26]; | |
192 | size_t res; | |
193 | ||
194 | /* Print date and time */ | |
195 | res = strftime(timestr, sizeof(timestr), | |
196 | "%F ", &tm); | |
197 | if (!res) { | |
198 | fprintf(stderr, "[warning] Unable to print ascii time.\n"); | |
199 | goto seconds; | |
200 | } | |
201 | fprintf(fp, "%s", timestr); | |
202 | } | |
203 | /* Print time in HH:MM:SS.ns */ | |
204 | fprintf(fp, "%02d:%02d:%02d.%09" PRIu64, | |
205 | tm.tm_hour, tm.tm_min, tm.tm_sec, ts_nsec); | |
206 | goto end; | |
207 | } | |
208 | seconds: | |
209 | fprintf(fp, "%3" PRIu64 ".%09" PRIu64, | |
210 | ts_sec, ts_nsec); | |
211 | ||
212 | end: | |
213 | return; | |
214 | } | |
215 | ||
31262354 | 216 | static |
764af3f4 | 217 | int ctf_read_event(struct stream_pos *ppos, struct ctf_stream *stream) |
31262354 MD |
218 | { |
219 | struct ctf_stream_pos *pos = | |
220 | container_of(ppos, struct ctf_stream_pos, parent); | |
764af3f4 | 221 | struct ctf_stream_class *stream_class = stream->stream_class; |
42dc00b7 | 222 | struct ctf_stream_event *event; |
31262354 | 223 | uint64_t id = 0; |
31262354 MD |
224 | int ret; |
225 | ||
3abe83c7 MD |
226 | /* We need to check for EOF here for empty files. */ |
227 | if (unlikely(pos->offset == EOF)) | |
228 | return EOF; | |
229 | ||
5f643ed7 MD |
230 | ctf_pos_get_event(pos); |
231 | ||
3abe83c7 MD |
232 | /* |
233 | * This is the EOF check after we've advanced the position in | |
234 | * ctf_pos_get_event. | |
235 | */ | |
7f3f572b | 236 | if (unlikely(pos->offset == EOF)) |
31262354 | 237 | return EOF; |
5f643ed7 | 238 | assert(pos->offset < pos->content_size); |
31262354 MD |
239 | |
240 | /* Read event header */ | |
7f3f572b | 241 | if (likely(stream->stream_event_header)) { |
a35173fe | 242 | struct definition_integer *integer_definition; |
ccdb988e | 243 | struct definition *variant; |
a35173fe | 244 | |
e28d4618 | 245 | ret = generic_rw(ppos, &stream->stream_event_header->p); |
7f3f572b | 246 | if (unlikely(ret)) |
31262354 MD |
247 | goto error; |
248 | /* lookup event id */ | |
e28d4618 | 249 | integer_definition = lookup_integer(&stream->stream_event_header->p, "id", FALSE); |
a35173fe MD |
250 | if (integer_definition) { |
251 | id = integer_definition->value._unsigned; | |
252 | } else { | |
253 | struct definition_enum *enum_definition; | |
254 | ||
e28d4618 | 255 | enum_definition = lookup_enum(&stream->stream_event_header->p, "id", FALSE); |
a35173fe MD |
256 | if (enum_definition) { |
257 | id = enum_definition->integer->value._unsigned; | |
258 | } | |
31262354 | 259 | } |
764af3f4 | 260 | |
e28d4618 | 261 | variant = lookup_variant(&stream->stream_event_header->p, "v"); |
ccdb988e MD |
262 | if (variant) { |
263 | integer_definition = lookup_integer(variant, "id", FALSE); | |
264 | if (integer_definition) { | |
265 | id = integer_definition->value._unsigned; | |
266 | } | |
267 | } | |
c87a8eb2 | 268 | stream->event_id = id; |
ccdb988e | 269 | |
764af3f4 | 270 | /* lookup timestamp */ |
5e2eb0ae | 271 | stream->has_timestamp = 0; |
e28d4618 | 272 | integer_definition = lookup_integer(&stream->stream_event_header->p, "timestamp", FALSE); |
a35173fe | 273 | if (integer_definition) { |
2b9a764d | 274 | ctf_update_timestamp(stream, integer_definition); |
5e2eb0ae | 275 | stream->has_timestamp = 1; |
a35173fe | 276 | } else { |
ccdb988e MD |
277 | if (variant) { |
278 | integer_definition = lookup_integer(variant, "timestamp", FALSE); | |
a35173fe | 279 | if (integer_definition) { |
2b9a764d | 280 | ctf_update_timestamp(stream, integer_definition); |
5e2eb0ae | 281 | stream->has_timestamp = 1; |
a35173fe MD |
282 | } |
283 | } | |
764af3f4 | 284 | } |
31262354 MD |
285 | } |
286 | ||
287 | /* Read stream-declared event context */ | |
e28d4618 MD |
288 | if (stream->stream_event_context) { |
289 | ret = generic_rw(ppos, &stream->stream_event_context->p); | |
31262354 MD |
290 | if (ret) |
291 | goto error; | |
292 | } | |
293 | ||
7f3f572b | 294 | if (unlikely(id >= stream_class->events_by_id->len)) { |
3394d22e | 295 | fprintf(stderr, "[error] Event id %" PRIu64 " is outside range.\n", id); |
31262354 MD |
296 | return -EINVAL; |
297 | } | |
e28d4618 | 298 | event = g_ptr_array_index(stream->events_by_id, id); |
7f3f572b | 299 | if (unlikely(!event)) { |
3394d22e | 300 | fprintf(stderr, "[error] Event id %" PRIu64 " is unknown.\n", id); |
31262354 MD |
301 | return -EINVAL; |
302 | } | |
303 | ||
304 | /* Read event-declared event context */ | |
e28d4618 MD |
305 | if (event->event_context) { |
306 | ret = generic_rw(ppos, &event->event_context->p); | |
31262354 MD |
307 | if (ret) |
308 | goto error; | |
309 | } | |
310 | ||
311 | /* Read event payload */ | |
7f3f572b | 312 | if (likely(event->event_fields)) { |
e28d4618 | 313 | ret = generic_rw(ppos, &event->event_fields->p); |
31262354 MD |
314 | if (ret) |
315 | goto error; | |
316 | } | |
317 | ||
318 | return 0; | |
319 | ||
320 | error: | |
3394d22e | 321 | fprintf(stderr, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n"); |
31262354 MD |
322 | return ret; |
323 | } | |
324 | ||
325 | static | |
764af3f4 | 326 | int ctf_write_event(struct stream_pos *pos, struct ctf_stream *stream) |
31262354 | 327 | { |
764af3f4 | 328 | struct ctf_stream_class *stream_class = stream->stream_class; |
42dc00b7 | 329 | struct ctf_stream_event *event; |
c87a8eb2 | 330 | uint64_t id; |
31262354 MD |
331 | int ret; |
332 | ||
c87a8eb2 MD |
333 | id = stream->event_id; |
334 | ||
31262354 | 335 | /* print event header */ |
7f3f572b | 336 | if (likely(stream->stream_event_header)) { |
e28d4618 | 337 | ret = generic_rw(pos, &stream->stream_event_header->p); |
31262354 MD |
338 | if (ret) |
339 | goto error; | |
340 | } | |
341 | ||
342 | /* print stream-declared event context */ | |
e28d4618 MD |
343 | if (stream->stream_event_context) { |
344 | ret = generic_rw(pos, &stream->stream_event_context->p); | |
31262354 MD |
345 | if (ret) |
346 | goto error; | |
347 | } | |
348 | ||
7f3f572b | 349 | if (unlikely(id >= stream_class->events_by_id->len)) { |
3394d22e | 350 | fprintf(stderr, "[error] Event id %" PRIu64 " is outside range.\n", id); |
31262354 MD |
351 | return -EINVAL; |
352 | } | |
e28d4618 | 353 | event = g_ptr_array_index(stream->events_by_id, id); |
7f3f572b | 354 | if (unlikely(!event)) { |
3394d22e | 355 | fprintf(stderr, "[error] Event id %" PRIu64 " is unknown.\n", id); |
31262354 MD |
356 | return -EINVAL; |
357 | } | |
358 | ||
359 | /* print event-declared event context */ | |
e28d4618 MD |
360 | if (event->event_context) { |
361 | ret = generic_rw(pos, &event->event_context->p); | |
31262354 MD |
362 | if (ret) |
363 | goto error; | |
364 | } | |
365 | ||
366 | /* Read and print event payload */ | |
7f3f572b | 367 | if (likely(event->event_fields)) { |
e28d4618 | 368 | ret = generic_rw(pos, &event->event_fields->p); |
31262354 MD |
369 | if (ret) |
370 | goto error; | |
371 | } | |
372 | ||
373 | return 0; | |
374 | ||
375 | error: | |
3394d22e | 376 | fprintf(stderr, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n"); |
31262354 MD |
377 | return ret; |
378 | } | |
379 | ||
8563e754 | 380 | void ctf_init_pos(struct ctf_stream_pos *pos, int fd, int open_flags) |
8c572eba MD |
381 | { |
382 | pos->fd = fd; | |
383 | pos->mmap_offset = 0; | |
384 | pos->packet_size = 0; | |
385 | pos->content_size = 0; | |
386 | pos->content_size_loc = NULL; | |
387 | pos->base = NULL; | |
388 | pos->offset = 0; | |
389 | pos->dummy = false; | |
8c572eba | 390 | pos->cur_index = 0; |
8563e754 MD |
391 | if (fd >= 0) |
392 | pos->packet_index = g_array_new(FALSE, TRUE, | |
393 | sizeof(struct packet_index)); | |
394 | else | |
395 | pos->packet_index = NULL; | |
8563e754 MD |
396 | switch (open_flags & O_ACCMODE) { |
397 | case O_RDONLY: | |
398 | pos->prot = PROT_READ; | |
399 | pos->flags = MAP_PRIVATE; | |
400 | pos->parent.rw_table = read_dispatch_table; | |
31262354 | 401 | pos->parent.event_cb = ctf_read_event; |
8563e754 | 402 | break; |
8563e754 MD |
403 | case O_RDWR: |
404 | pos->prot = PROT_WRITE; /* Write has priority */ | |
405 | pos->flags = MAP_SHARED; | |
406 | pos->parent.rw_table = write_dispatch_table; | |
31262354 | 407 | pos->parent.event_cb = ctf_write_event; |
8563e754 | 408 | if (fd >= 0) |
847bf71a | 409 | ctf_move_pos_slow(pos, 0, SEEK_SET); /* position for write */ |
8563e754 MD |
410 | break; |
411 | default: | |
412 | assert(0); | |
8c572eba MD |
413 | } |
414 | } | |
415 | ||
46322b33 | 416 | void ctf_fini_pos(struct ctf_stream_pos *pos) |
8c572eba MD |
417 | { |
418 | int ret; | |
419 | ||
420 | if (pos->prot == PROT_WRITE && pos->content_size_loc) | |
421 | *pos->content_size_loc = pos->offset; | |
422 | if (pos->base) { | |
423 | /* unmap old base */ | |
424 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); | |
425 | if (ret) { | |
3394d22e | 426 | fprintf(stderr, "[error] Unable to unmap old base: %s.\n", |
8c572eba MD |
427 | strerror(errno)); |
428 | assert(0); | |
429 | } | |
430 | } | |
431 | (void) g_array_free(pos->packet_index, TRUE); | |
432 | } | |
433 | ||
847bf71a | 434 | void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence) |
0f980a35 | 435 | { |
75cc2c35 MD |
436 | struct ctf_file_stream *file_stream = |
437 | container_of(pos, struct ctf_file_stream, pos); | |
0f980a35 | 438 | int ret; |
8c572eba MD |
439 | off_t off; |
440 | struct packet_index *index; | |
0f980a35 | 441 | |
8c572eba MD |
442 | if (pos->prot == PROT_WRITE && pos->content_size_loc) |
443 | *pos->content_size_loc = pos->offset; | |
0f980a35 MD |
444 | |
445 | if (pos->base) { | |
446 | /* unmap old base */ | |
8c572eba | 447 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); |
0f980a35 | 448 | if (ret) { |
3394d22e | 449 | fprintf(stderr, "[error] Unable to unmap old base: %s.\n", |
0f980a35 MD |
450 | strerror(errno)); |
451 | assert(0); | |
452 | } | |
847bf71a | 453 | pos->base = NULL; |
0f980a35 MD |
454 | } |
455 | ||
8c572eba | 456 | /* |
46322b33 | 457 | * The caller should never ask for ctf_move_pos across packets, |
8c572eba MD |
458 | * except to get exactly at the beginning of the next packet. |
459 | */ | |
460 | if (pos->prot == PROT_WRITE) { | |
989c73bc MD |
461 | switch (whence) { |
462 | case SEEK_CUR: | |
463 | /* The writer will add padding */ | |
464 | assert(pos->offset + offset == pos->packet_size); | |
8c572eba | 465 | pos->mmap_offset += WRITE_PACKET_LEN / CHAR_BIT; |
989c73bc MD |
466 | break; |
467 | case SEEK_SET: | |
468 | assert(offset == 0); /* only seek supported for now */ | |
469 | pos->cur_index = 0; | |
470 | break; | |
471 | default: | |
472 | assert(0); | |
473 | } | |
8c572eba MD |
474 | pos->content_size = -1U; /* Unknown at this point */ |
475 | pos->packet_size = WRITE_PACKET_LEN; | |
989c73bc MD |
476 | off = posix_fallocate(pos->fd, pos->mmap_offset, |
477 | pos->packet_size / CHAR_BIT); | |
8c572eba | 478 | assert(off >= 0); |
847bf71a | 479 | pos->offset = 0; |
8c572eba | 480 | } else { |
5f643ed7 | 481 | read_next_packet: |
847bf71a MD |
482 | switch (whence) { |
483 | case SEEK_CUR: | |
41e82e00 MD |
484 | { |
485 | uint32_t events_discarded_diff; | |
486 | ||
7d97fad9 MD |
487 | if (pos->offset == EOF) { |
488 | return; | |
489 | } | |
3217ac37 | 490 | /* For printing discarded event count */ |
41e82e00 MD |
491 | index = &g_array_index(pos->packet_index, |
492 | struct packet_index, pos->cur_index); | |
493 | events_discarded_diff = index->events_discarded; | |
3217ac37 MD |
494 | file_stream->parent.prev_timestamp_end = |
495 | index->timestamp_end; | |
41e82e00 MD |
496 | if (pos->cur_index > 0) { |
497 | index = &g_array_index(pos->packet_index, | |
498 | struct packet_index, | |
499 | pos->cur_index - 1); | |
500 | events_discarded_diff -= index->events_discarded; | |
501 | } | |
fca04958 | 502 | file_stream->parent.events_discarded = events_discarded_diff; |
7d97fad9 | 503 | file_stream->parent.prev_timestamp = file_stream->parent.timestamp; |
847bf71a MD |
504 | /* The reader will expect us to skip padding */ |
505 | assert(pos->offset + offset == pos->content_size); | |
8c572eba | 506 | ++pos->cur_index; |
847bf71a | 507 | break; |
41e82e00 | 508 | } |
847bf71a MD |
509 | case SEEK_SET: |
510 | assert(offset == 0); /* only seek supported for now */ | |
511 | pos->cur_index = 0; | |
fca04958 | 512 | file_stream->parent.prev_timestamp = 0; |
3217ac37 | 513 | file_stream->parent.prev_timestamp_end = 0; |
847bf71a MD |
514 | break; |
515 | default: | |
516 | assert(0); | |
517 | } | |
518 | if (pos->cur_index >= pos->packet_index->len) { | |
7d97fad9 MD |
519 | /* |
520 | * When a stream reaches the end of the | |
521 | * file, we need to show the number of | |
522 | * events discarded ourselves, because | |
523 | * there is no next event scheduled to | |
524 | * be printed in the output. | |
525 | */ | |
526 | if (file_stream->parent.events_discarded) { | |
527 | fflush(stdout); | |
528 | fprintf(stderr, "[warning] Tracer discarded %d events at end of stream between [", | |
529 | file_stream->parent.events_discarded); | |
530 | ctf_print_timestamp(stderr, &file_stream->parent, | |
531 | file_stream->parent.prev_timestamp); | |
532 | fprintf(stderr, "] and ["); | |
533 | ctf_print_timestamp(stderr, &file_stream->parent, | |
534 | file_stream->parent.prev_timestamp_end); | |
535 | fprintf(stderr, "]. You should consider increasing the buffer size.\n"); | |
536 | fflush(stderr); | |
537 | file_stream->parent.events_discarded = 0; | |
538 | } | |
670977d3 | 539 | pos->offset = EOF; |
847bf71a MD |
540 | return; |
541 | } | |
8c572eba MD |
542 | index = &g_array_index(pos->packet_index, struct packet_index, |
543 | pos->cur_index); | |
544 | pos->mmap_offset = index->offset; | |
545 | ||
546 | /* Lookup context/packet size in index */ | |
2d0bea29 | 547 | file_stream->parent.timestamp = index->timestamp_begin; |
8c572eba MD |
548 | pos->content_size = index->content_size; |
549 | pos->packet_size = index->packet_size; | |
5f643ed7 | 550 | if (index->data_offset < index->content_size) { |
75cc2c35 | 551 | pos->offset = 0; /* will read headers */ |
5f643ed7 MD |
552 | } else if (index->data_offset == index->content_size) { |
553 | /* empty packet */ | |
554 | pos->offset = index->data_offset; | |
555 | offset = 0; | |
3abe83c7 | 556 | whence = SEEK_CUR; |
5f643ed7 | 557 | goto read_next_packet; |
7eda6fc7 | 558 | } else { |
2b9a764d MD |
559 | pos->offset = EOF; |
560 | return; | |
561 | } | |
8c572eba | 562 | } |
0f980a35 | 563 | /* map new base. Need mapping length from header. */ |
8c572eba MD |
564 | pos->base = mmap(NULL, pos->packet_size / CHAR_BIT, pos->prot, |
565 | pos->flags, pos->fd, pos->mmap_offset); | |
847bf71a | 566 | if (pos->base == MAP_FAILED) { |
3394d22e | 567 | fprintf(stderr, "[error] mmap error %s.\n", |
847bf71a MD |
568 | strerror(errno)); |
569 | assert(0); | |
570 | } | |
75cc2c35 MD |
571 | |
572 | /* update trace_packet_header and stream_packet_context */ | |
2d0bea29 | 573 | if (pos->prot != PROT_WRITE && file_stream->parent.trace_packet_header) { |
75cc2c35 | 574 | /* Read packet header */ |
2d0bea29 | 575 | ret = generic_rw(&pos->parent, &file_stream->parent.trace_packet_header->p); |
75cc2c35 MD |
576 | assert(!ret); |
577 | } | |
2d0bea29 | 578 | if (pos->prot != PROT_WRITE && file_stream->parent.stream_packet_context) { |
75cc2c35 | 579 | /* Read packet context */ |
2d0bea29 | 580 | ret = generic_rw(&pos->parent, &file_stream->parent.stream_packet_context->p); |
75cc2c35 MD |
581 | assert(!ret); |
582 | } | |
0f980a35 MD |
583 | } |
584 | ||
b4c19c1e MD |
585 | static |
586 | int packet_metadata(struct ctf_trace *td, FILE *fp) | |
587 | { | |
588 | uint32_t magic; | |
589 | size_t len; | |
590 | int ret = 0; | |
591 | ||
592 | len = fread(&magic, sizeof(magic), 1, fp); | |
a0fe7d97 | 593 | if (len != 1) { |
b4c19c1e MD |
594 | goto end; |
595 | } | |
596 | if (magic == TSDL_MAGIC) { | |
597 | ret = 1; | |
598 | td->byte_order = BYTE_ORDER; | |
0d336fdf | 599 | CTF_TRACE_SET_FIELD(td, byte_order); |
b4c19c1e MD |
600 | } else if (magic == GUINT32_SWAP_LE_BE(TSDL_MAGIC)) { |
601 | ret = 1; | |
602 | td->byte_order = (BYTE_ORDER == BIG_ENDIAN) ? | |
603 | LITTLE_ENDIAN : BIG_ENDIAN; | |
0d336fdf | 604 | CTF_TRACE_SET_FIELD(td, byte_order); |
b4c19c1e MD |
605 | } |
606 | end: | |
607 | rewind(fp); | |
608 | return ret; | |
609 | } | |
610 | ||
5c262147 MD |
611 | /* |
612 | * Returns 0 on success, -1 on error. | |
613 | */ | |
614 | static | |
615 | int check_version(unsigned int major, unsigned int minor) | |
616 | { | |
617 | switch (major) { | |
618 | case 1: | |
619 | switch (minor) { | |
620 | case 8: | |
621 | return 0; | |
622 | default: | |
623 | goto warning; | |
624 | } | |
625 | default: | |
626 | goto warning; | |
627 | ||
628 | } | |
629 | ||
630 | /* eventually return an error instead of warning */ | |
631 | warning: | |
3394d22e | 632 | fprintf(stderr, "[warning] Unsupported CTF specification version %u.%u. Trying anyway.\n", |
5c262147 MD |
633 | major, minor); |
634 | return 0; | |
635 | } | |
636 | ||
b4c19c1e MD |
637 | static |
638 | int ctf_open_trace_metadata_packet_read(struct ctf_trace *td, FILE *in, | |
639 | FILE *out) | |
640 | { | |
641 | struct metadata_packet_header header; | |
a0fe7d97 | 642 | size_t readlen, writelen, toread; |
f8254867 | 643 | char buf[4096 + 1]; /* + 1 for debug-mode \0 */ |
b4c19c1e MD |
644 | int ret = 0; |
645 | ||
a91a962e | 646 | readlen = fread(&header, header_sizeof(header), 1, in); |
a0fe7d97 | 647 | if (readlen < 1) |
b4c19c1e MD |
648 | return -EINVAL; |
649 | ||
650 | if (td->byte_order != BYTE_ORDER) { | |
651 | header.magic = GUINT32_SWAP_LE_BE(header.magic); | |
652 | header.checksum = GUINT32_SWAP_LE_BE(header.checksum); | |
653 | header.content_size = GUINT32_SWAP_LE_BE(header.content_size); | |
654 | header.packet_size = GUINT32_SWAP_LE_BE(header.packet_size); | |
655 | } | |
656 | if (header.checksum) | |
3394d22e | 657 | fprintf(stderr, "[warning] checksum verification not supported yet.\n"); |
b4c19c1e | 658 | if (header.compression_scheme) { |
3394d22e | 659 | fprintf(stderr, "[error] compression (%u) not supported yet.\n", |
b4c19c1e MD |
660 | header.compression_scheme); |
661 | return -EINVAL; | |
662 | } | |
663 | if (header.encryption_scheme) { | |
3394d22e | 664 | fprintf(stderr, "[error] encryption (%u) not supported yet.\n", |
b4c19c1e MD |
665 | header.encryption_scheme); |
666 | return -EINVAL; | |
667 | } | |
668 | if (header.checksum_scheme) { | |
3394d22e | 669 | fprintf(stderr, "[error] checksum (%u) not supported yet.\n", |
b4c19c1e MD |
670 | header.checksum_scheme); |
671 | return -EINVAL; | |
672 | } | |
5c262147 MD |
673 | if (check_version(header.major, header.minor) < 0) |
674 | return -EINVAL; | |
b4c19c1e MD |
675 | if (!CTF_TRACE_FIELD_IS_SET(td, uuid)) { |
676 | memcpy(td->uuid, header.uuid, sizeof(header.uuid)); | |
677 | CTF_TRACE_SET_FIELD(td, uuid); | |
678 | } else { | |
679 | if (uuid_compare(header.uuid, td->uuid)) | |
680 | return -EINVAL; | |
681 | } | |
682 | ||
255b2138 | 683 | toread = (header.content_size / CHAR_BIT) - header_sizeof(header); |
a0fe7d97 MD |
684 | |
685 | for (;;) { | |
f8254867 | 686 | readlen = fread(buf, sizeof(char), min(sizeof(buf) - 1, toread), in); |
b4c19c1e MD |
687 | if (ferror(in)) { |
688 | ret = -EINVAL; | |
689 | break; | |
690 | } | |
4152822b | 691 | if (babeltrace_debug) { |
f8254867 | 692 | buf[readlen] = '\0'; |
3394d22e | 693 | fprintf(stderr, "[debug] metadata packet read: %s\n", |
4152822b MD |
694 | buf); |
695 | } | |
696 | ||
b4c19c1e MD |
697 | writelen = fwrite(buf, sizeof(char), readlen, out); |
698 | if (writelen < readlen) { | |
699 | ret = -EIO; | |
700 | break; | |
701 | } | |
702 | if (ferror(out)) { | |
703 | ret = -EINVAL; | |
704 | break; | |
705 | } | |
a0fe7d97 MD |
706 | toread -= readlen; |
707 | if (!toread) { | |
7f4b5c4d | 708 | ret = 0; /* continue reading next packet */ |
ddbc52af | 709 | goto read_padding; |
a0fe7d97 | 710 | } |
b4c19c1e MD |
711 | } |
712 | return ret; | |
ddbc52af MD |
713 | |
714 | read_padding: | |
715 | toread = (header.packet_size - header.content_size) / CHAR_BIT; | |
716 | ret = fseek(in, toread, SEEK_CUR); | |
717 | if (ret < 0) { | |
3394d22e | 718 | fprintf(stderr, "[warning] Missing padding at end of file\n"); |
ddbc52af MD |
719 | ret = 0; |
720 | } | |
721 | return ret; | |
b4c19c1e MD |
722 | } |
723 | ||
724 | static | |
725 | int ctf_open_trace_metadata_stream_read(struct ctf_trace *td, FILE **fp, | |
726 | char **buf) | |
727 | { | |
728 | FILE *in, *out; | |
729 | size_t size; | |
730 | int ret; | |
731 | ||
732 | in = *fp; | |
c4f5487e MD |
733 | /* |
734 | * Using strlen on *buf instead of size of open_memstream | |
735 | * because its size includes garbage at the end (after final | |
736 | * \0). This is the allocated size, not the actual string size. | |
737 | */ | |
b4c19c1e | 738 | out = open_memstream(buf, &size); |
a569a564 MD |
739 | if (out == NULL) { |
740 | perror("Metadata open_memstream"); | |
b4c19c1e | 741 | return -errno; |
a569a564 | 742 | } |
b4c19c1e MD |
743 | for (;;) { |
744 | ret = ctf_open_trace_metadata_packet_read(td, in, out); | |
7f4b5c4d | 745 | if (ret) { |
b4c19c1e | 746 | break; |
7f4b5c4d MD |
747 | } |
748 | if (feof(in)) { | |
749 | ret = 0; | |
b4c19c1e MD |
750 | break; |
751 | } | |
752 | } | |
753 | fclose(out); /* flush the buffer */ | |
754 | fclose(in); | |
755 | /* open for reading */ | |
c4f5487e | 756 | *fp = fmemopen(*buf, strlen(*buf), "rb"); |
a569a564 MD |
757 | if (!*fp) { |
758 | perror("Metadata fmemopen"); | |
759 | return -errno; | |
760 | } | |
b4c19c1e MD |
761 | return 0; |
762 | } | |
763 | ||
65102a8c | 764 | static |
b086c01a JD |
765 | int ctf_open_trace_metadata_read(struct ctf_trace *td, |
766 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, | |
ae23d232 | 767 | int whence), FILE *metadata_fp) |
65102a8c MD |
768 | { |
769 | struct ctf_scanner *scanner; | |
2d0bea29 | 770 | struct ctf_file_stream *metadata_stream; |
65102a8c | 771 | FILE *fp; |
b4c19c1e | 772 | char *buf = NULL; |
65102a8c MD |
773 | int ret = 0; |
774 | ||
2d0bea29 | 775 | metadata_stream = g_new0(struct ctf_file_stream, 1); |
b086c01a JD |
776 | |
777 | if (move_pos_slow) { | |
778 | metadata_stream->pos.move_pos_slow = move_pos_slow; | |
779 | } else { | |
780 | fprintf(stderr, "[error] move_pos_slow function undefined.\n"); | |
781 | ret = -1; | |
782 | goto end_stream; | |
783 | } | |
784 | ||
ae23d232 JD |
785 | if (metadata_fp) { |
786 | fp = metadata_fp; | |
787 | } else { | |
788 | td->metadata = &metadata_stream->parent; | |
789 | metadata_stream->pos.fd = openat(td->dirfd, "metadata", O_RDONLY); | |
790 | if (metadata_stream->pos.fd < 0) { | |
3394d22e | 791 | fprintf(stderr, "Unable to open metadata.\n"); |
ae23d232 JD |
792 | return metadata_stream->pos.fd; |
793 | } | |
65102a8c | 794 | |
ae23d232 JD |
795 | fp = fdopen(metadata_stream->pos.fd, "r"); |
796 | if (!fp) { | |
3394d22e | 797 | fprintf(stderr, "[error] Unable to open metadata stream.\n"); |
a569a564 | 798 | perror("Metadata stream open"); |
ae23d232 JD |
799 | ret = -errno; |
800 | goto end_stream; | |
801 | } | |
802 | } | |
65102a8c MD |
803 | if (babeltrace_debug) |
804 | yydebug = 1; | |
805 | ||
b4c19c1e MD |
806 | if (packet_metadata(td, fp)) { |
807 | ret = ctf_open_trace_metadata_stream_read(td, &fp, &buf); | |
808 | if (ret) | |
809 | goto end_packet_read; | |
da75b0f7 | 810 | } else { |
5c262147 MD |
811 | unsigned int major, minor; |
812 | ssize_t nr_items; | |
8c2df3f5 | 813 | |
da75b0f7 | 814 | td->byte_order = BYTE_ORDER; |
8c2df3f5 | 815 | |
5c262147 MD |
816 | /* Check text-only metadata header and version */ |
817 | nr_items = fscanf(fp, "/* CTF %u.%u", &major, &minor); | |
818 | if (nr_items < 2) | |
3394d22e | 819 | fprintf(stderr, "[warning] Ill-shapen or missing \"/* CTF x.y\" header for text-only metadata.\n"); |
5c262147 MD |
820 | if (check_version(major, minor) < 0) { |
821 | ret = -EINVAL; | |
822 | goto end_packet_read; | |
823 | } | |
8c2df3f5 | 824 | rewind(fp); |
b4c19c1e MD |
825 | } |
826 | ||
65102a8c MD |
827 | scanner = ctf_scanner_alloc(fp); |
828 | if (!scanner) { | |
3394d22e | 829 | fprintf(stderr, "[error] Error allocating scanner\n"); |
65102a8c MD |
830 | ret = -ENOMEM; |
831 | goto end_scanner_alloc; | |
832 | } | |
833 | ret = ctf_scanner_append_ast(scanner); | |
834 | if (ret) { | |
3394d22e | 835 | fprintf(stderr, "[error] Error creating AST\n"); |
65102a8c MD |
836 | goto end; |
837 | } | |
838 | ||
839 | if (babeltrace_debug) { | |
3394d22e | 840 | ret = ctf_visitor_print_xml(stderr, 0, &scanner->ast->root); |
65102a8c | 841 | if (ret) { |
3394d22e | 842 | fprintf(stderr, "[error] Error visiting AST for XML output\n"); |
65102a8c MD |
843 | goto end; |
844 | } | |
845 | } | |
846 | ||
3394d22e | 847 | ret = ctf_visitor_semantic_check(stderr, 0, &scanner->ast->root); |
65102a8c | 848 | if (ret) { |
3394d22e | 849 | fprintf(stderr, "[error] Error in CTF semantic validation %d\n", ret); |
65102a8c MD |
850 | goto end; |
851 | } | |
3394d22e | 852 | ret = ctf_visitor_construct_metadata(stderr, 0, &scanner->ast->root, |
ac5c6ca0 | 853 | td, td->byte_order); |
65102a8c | 854 | if (ret) { |
3394d22e | 855 | fprintf(stderr, "[error] Error in CTF metadata constructor %d\n", ret); |
65102a8c MD |
856 | goto end; |
857 | } | |
858 | end: | |
859 | ctf_scanner_free(scanner); | |
860 | end_scanner_alloc: | |
b4c19c1e | 861 | end_packet_read: |
65102a8c | 862 | fclose(fp); |
b4c19c1e | 863 | free(buf); |
65102a8c | 864 | end_stream: |
2d0bea29 MD |
865 | close(metadata_stream->pos.fd); |
866 | if (ret) | |
867 | g_free(metadata_stream); | |
0f980a35 MD |
868 | return ret; |
869 | } | |
870 | ||
e28d4618 | 871 | static |
42dc00b7 MD |
872 | struct ctf_stream_event *create_event_definitions(struct ctf_trace *td, |
873 | struct ctf_stream *stream, | |
874 | struct ctf_event *event) | |
e28d4618 | 875 | { |
42dc00b7 | 876 | struct ctf_stream_event *stream_event = g_new0(struct ctf_stream_event, 1); |
e28d4618 MD |
877 | |
878 | if (event->context_decl) { | |
879 | struct definition *definition = | |
880 | event->context_decl->p.definition_new(&event->context_decl->p, | |
881 | stream->parent_def_scope, 0, 0, "event.context"); | |
882 | if (!definition) { | |
883 | goto error; | |
884 | } | |
42dc00b7 | 885 | stream_event->event_context = container_of(definition, |
e28d4618 | 886 | struct definition_struct, p); |
42dc00b7 | 887 | stream->parent_def_scope = stream_event->event_context->p.scope; |
e28d4618 MD |
888 | } |
889 | if (event->fields_decl) { | |
890 | struct definition *definition = | |
891 | event->fields_decl->p.definition_new(&event->fields_decl->p, | |
892 | stream->parent_def_scope, 0, 0, "event.fields"); | |
893 | if (!definition) { | |
894 | goto error; | |
895 | } | |
42dc00b7 | 896 | stream_event->event_fields = container_of(definition, |
e28d4618 | 897 | struct definition_struct, p); |
42dc00b7 | 898 | stream->parent_def_scope = stream_event->event_fields->p.scope; |
e28d4618 | 899 | } |
42dc00b7 | 900 | return stream_event; |
e28d4618 MD |
901 | |
902 | error: | |
42dc00b7 MD |
903 | if (stream_event->event_fields) |
904 | definition_unref(&stream_event->event_fields->p); | |
905 | if (stream_event->event_context) | |
906 | definition_unref(&stream_event->event_context->p); | |
e28d4618 MD |
907 | return NULL; |
908 | } | |
909 | ||
910 | static | |
911 | int create_stream_definitions(struct ctf_trace *td, struct ctf_stream *stream) | |
912 | { | |
913 | struct ctf_stream_class *stream_class; | |
914 | int ret; | |
915 | int i; | |
916 | ||
917 | if (stream->stream_definitions_created) | |
918 | return 0; | |
919 | ||
920 | stream_class = stream->stream_class; | |
921 | ||
922 | if (stream_class->packet_context_decl) { | |
923 | struct definition *definition = | |
924 | stream_class->packet_context_decl->p.definition_new(&stream_class->packet_context_decl->p, | |
925 | stream->parent_def_scope, 0, 0, "stream.packet.context"); | |
926 | if (!definition) { | |
927 | ret = -EINVAL; | |
928 | goto error; | |
929 | } | |
930 | stream->stream_packet_context = container_of(definition, | |
931 | struct definition_struct, p); | |
932 | stream->parent_def_scope = stream->stream_packet_context->p.scope; | |
933 | } | |
934 | if (stream_class->event_header_decl) { | |
935 | struct definition *definition = | |
936 | stream_class->event_header_decl->p.definition_new(&stream_class->event_header_decl->p, | |
937 | stream->parent_def_scope, 0, 0, "stream.event.header"); | |
938 | if (!definition) { | |
939 | ret = -EINVAL; | |
940 | goto error; | |
941 | } | |
942 | stream->stream_event_header = | |
943 | container_of(definition, struct definition_struct, p); | |
944 | stream->parent_def_scope = stream->stream_event_header->p.scope; | |
945 | } | |
946 | if (stream_class->event_context_decl) { | |
947 | struct definition *definition = | |
948 | stream_class->event_context_decl->p.definition_new(&stream_class->event_context_decl->p, | |
949 | stream->parent_def_scope, 0, 0, "stream.event.context"); | |
950 | if (!definition) { | |
951 | ret = -EINVAL; | |
952 | goto error; | |
953 | } | |
954 | stream->stream_event_context = | |
955 | container_of(definition, struct definition_struct, p); | |
956 | stream->parent_def_scope = stream->stream_event_context->p.scope; | |
957 | } | |
958 | stream->events_by_id = g_ptr_array_new(); | |
959 | g_ptr_array_set_size(stream->events_by_id, stream_class->events_by_id->len); | |
960 | for (i = 0; i < stream->events_by_id->len; i++) { | |
961 | struct ctf_event *event = g_ptr_array_index(stream_class->events_by_id, i); | |
42dc00b7 | 962 | struct ctf_stream_event *stream_event; |
e28d4618 MD |
963 | |
964 | if (!event) | |
965 | continue; | |
42dc00b7 MD |
966 | stream_event = create_event_definitions(td, stream, event); |
967 | if (!stream_event) | |
e28d4618 | 968 | goto error_event; |
42dc00b7 | 969 | g_ptr_array_index(stream->events_by_id, i) = stream_event; |
e28d4618 MD |
970 | } |
971 | return 0; | |
972 | ||
973 | error_event: | |
974 | for (i = 0; i < stream->events_by_id->len; i++) { | |
42dc00b7 MD |
975 | struct ctf_stream_event *stream_event = g_ptr_array_index(stream->events_by_id, i); |
976 | if (stream_event) | |
977 | g_free(stream_event); | |
e28d4618 MD |
978 | } |
979 | g_ptr_array_free(stream->events_by_id, TRUE); | |
980 | error: | |
981 | if (stream->stream_event_context) | |
982 | definition_unref(&stream->stream_event_context->p); | |
983 | if (stream->stream_event_header) | |
984 | definition_unref(&stream->stream_event_header->p); | |
985 | if (stream->stream_packet_context) | |
986 | definition_unref(&stream->stream_packet_context->p); | |
987 | return ret; | |
988 | } | |
989 | ||
0f980a35 MD |
990 | |
991 | static | |
46322b33 | 992 | int create_stream_packet_index(struct ctf_trace *td, |
0f980a35 MD |
993 | struct ctf_file_stream *file_stream) |
994 | { | |
aa6bffae | 995 | struct ctf_stream_class *stream; |
0f980a35 | 996 | int len_index; |
46322b33 | 997 | struct ctf_stream_pos *pos; |
0f980a35 MD |
998 | struct stat filestats; |
999 | struct packet_index packet_index; | |
1000 | int first_packet = 1; | |
1001 | int ret; | |
1002 | ||
1003 | pos = &file_stream->pos; | |
1004 | ||
1005 | ret = fstat(pos->fd, &filestats); | |
1006 | if (ret < 0) | |
1007 | return ret; | |
1008 | ||
8895362d MD |
1009 | if (filestats.st_size < MAX_PACKET_HEADER_LEN / CHAR_BIT) |
1010 | return -EINVAL; | |
1011 | ||
0f980a35 MD |
1012 | for (pos->mmap_offset = 0; pos->mmap_offset < filestats.st_size; ) { |
1013 | uint64_t stream_id = 0; | |
1014 | ||
1015 | if (pos->base) { | |
1016 | /* unmap old base */ | |
8c572eba | 1017 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); |
0f980a35 | 1018 | if (ret) { |
3394d22e | 1019 | fprintf(stderr, "[error] Unable to unmap old base: %s.\n", |
0f980a35 MD |
1020 | strerror(errno)); |
1021 | return ret; | |
1022 | } | |
8c572eba | 1023 | pos->base = NULL; |
0f980a35 MD |
1024 | } |
1025 | /* map new base. Need mapping length from header. */ | |
8c572eba | 1026 | pos->base = mmap(NULL, MAX_PACKET_HEADER_LEN / CHAR_BIT, PROT_READ, |
0f980a35 | 1027 | MAP_PRIVATE, pos->fd, pos->mmap_offset); |
dc48ecad MD |
1028 | pos->content_size = MAX_PACKET_HEADER_LEN; /* Unknown at this point */ |
1029 | pos->packet_size = MAX_PACKET_HEADER_LEN; /* Unknown at this point */ | |
0f980a35 MD |
1030 | pos->offset = 0; /* Position of the packet header */ |
1031 | ||
8c572eba MD |
1032 | packet_index.offset = pos->mmap_offset; |
1033 | packet_index.content_size = 0; | |
1034 | packet_index.packet_size = 0; | |
75cc2c35 MD |
1035 | packet_index.timestamp_begin = 0; |
1036 | packet_index.timestamp_end = 0; | |
41e82e00 | 1037 | packet_index.events_discarded = 0; |
8c572eba | 1038 | |
0f980a35 | 1039 | /* read and check header, set stream id (and check) */ |
2d0bea29 | 1040 | if (file_stream->parent.trace_packet_header) { |
0f980a35 | 1041 | /* Read packet header */ |
2d0bea29 | 1042 | ret = generic_rw(&pos->parent, &file_stream->parent.trace_packet_header->p); |
c5e74408 MD |
1043 | if (ret) |
1044 | return ret; | |
2d0bea29 | 1045 | len_index = struct_declaration_lookup_field_index(file_stream->parent.trace_packet_header->declaration, g_quark_from_static_string("magic")); |
0f980a35 | 1046 | if (len_index >= 0) { |
b1a2f580 | 1047 | struct definition *field; |
f4c56ac2 | 1048 | uint64_t magic; |
0f980a35 | 1049 | |
2d0bea29 | 1050 | field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); |
f4c56ac2 MD |
1051 | magic = get_unsigned_int(field); |
1052 | if (magic != CTF_MAGIC) { | |
3394d22e | 1053 | fprintf(stderr, "[error] Invalid magic number 0x%" PRIX64 " at packet %u (file offset %zd).\n", |
f4c56ac2 | 1054 | magic, |
8c572eba MD |
1055 | file_stream->pos.packet_index->len, |
1056 | (ssize_t) pos->mmap_offset); | |
0f980a35 MD |
1057 | return -EINVAL; |
1058 | } | |
1059 | } | |
1060 | ||
1061 | /* check uuid */ | |
2d0bea29 | 1062 | len_index = struct_declaration_lookup_field_index(file_stream->parent.trace_packet_header->declaration, g_quark_from_static_string("uuid")); |
0f980a35 MD |
1063 | if (len_index >= 0) { |
1064 | struct definition_array *defarray; | |
b1a2f580 | 1065 | struct definition *field; |
0f980a35 MD |
1066 | uint64_t i; |
1067 | uint8_t uuidval[UUID_LEN]; | |
1068 | ||
2d0bea29 | 1069 | field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); |
b1a2f580 MD |
1070 | assert(field->declaration->id == CTF_TYPE_ARRAY); |
1071 | defarray = container_of(field, struct definition_array, p); | |
3838df27 | 1072 | assert(array_len(defarray) == UUID_LEN); |
0f980a35 MD |
1073 | |
1074 | for (i = 0; i < UUID_LEN; i++) { | |
1075 | struct definition *elem; | |
0f980a35 MD |
1076 | |
1077 | elem = array_index(defarray, i); | |
f4c56ac2 | 1078 | uuidval[i] = get_unsigned_int(elem); |
0f980a35 | 1079 | } |
46322b33 | 1080 | ret = uuid_compare(td->uuid, uuidval); |
0f980a35 | 1081 | if (ret) { |
3394d22e | 1082 | fprintf(stderr, "[error] Unique Universal Identifiers do not match.\n"); |
0f980a35 MD |
1083 | return -EINVAL; |
1084 | } | |
1085 | } | |
1086 | ||
1087 | ||
2d0bea29 | 1088 | len_index = struct_declaration_lookup_field_index(file_stream->parent.trace_packet_header->declaration, g_quark_from_static_string("stream_id")); |
0f980a35 | 1089 | if (len_index >= 0) { |
b1a2f580 | 1090 | struct definition *field; |
0f980a35 | 1091 | |
2d0bea29 | 1092 | field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); |
f4c56ac2 | 1093 | stream_id = get_unsigned_int(field); |
0f980a35 MD |
1094 | } |
1095 | } | |
1096 | ||
2d0bea29 | 1097 | if (!first_packet && file_stream->parent.stream_id != stream_id) { |
3394d22e | 1098 | fprintf(stderr, "[error] Stream ID is changing within a stream.\n"); |
0f980a35 MD |
1099 | return -EINVAL; |
1100 | } | |
1101 | if (first_packet) { | |
2d0bea29 | 1102 | file_stream->parent.stream_id = stream_id; |
46322b33 | 1103 | if (stream_id >= td->streams->len) { |
3394d22e | 1104 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); |
0f980a35 MD |
1105 | return -EINVAL; |
1106 | } | |
46322b33 | 1107 | stream = g_ptr_array_index(td->streams, stream_id); |
0f980a35 | 1108 | if (!stream) { |
3394d22e | 1109 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); |
0f980a35 MD |
1110 | return -EINVAL; |
1111 | } | |
2d0bea29 | 1112 | file_stream->parent.stream_class = stream; |
01c76b24 | 1113 | ret = create_stream_definitions(td, &file_stream->parent); |
862434ec MD |
1114 | if (ret) |
1115 | return ret; | |
0f980a35 MD |
1116 | } |
1117 | first_packet = 0; | |
1118 | ||
2d0bea29 | 1119 | if (file_stream->parent.stream_packet_context) { |
dc48ecad | 1120 | /* Read packet context */ |
2d0bea29 | 1121 | ret = generic_rw(&pos->parent, &file_stream->parent.stream_packet_context->p); |
c5e74408 MD |
1122 | if (ret) |
1123 | return ret; | |
dc48ecad | 1124 | /* read content size from header */ |
2d0bea29 | 1125 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("content_size")); |
dc48ecad | 1126 | if (len_index >= 0) { |
b1a2f580 | 1127 | struct definition *field; |
dc48ecad | 1128 | |
2d0bea29 | 1129 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1130 | packet_index.content_size = get_unsigned_int(field); |
dc48ecad MD |
1131 | } else { |
1132 | /* Use file size for packet size */ | |
8c572eba | 1133 | packet_index.content_size = filestats.st_size * CHAR_BIT; |
dc48ecad MD |
1134 | } |
1135 | ||
1136 | /* read packet size from header */ | |
2d0bea29 | 1137 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("packet_size")); |
dc48ecad | 1138 | if (len_index >= 0) { |
b1a2f580 | 1139 | struct definition *field; |
dc48ecad | 1140 | |
2d0bea29 | 1141 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1142 | packet_index.packet_size = get_unsigned_int(field); |
dc48ecad MD |
1143 | } else { |
1144 | /* Use content size if non-zero, else file size */ | |
8c572eba | 1145 | packet_index.packet_size = packet_index.content_size ? : filestats.st_size * CHAR_BIT; |
dc48ecad | 1146 | } |
75cc2c35 MD |
1147 | |
1148 | /* read timestamp begin from header */ | |
2d0bea29 | 1149 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("timestamp_begin")); |
75cc2c35 | 1150 | if (len_index >= 0) { |
75cc2c35 MD |
1151 | struct definition *field; |
1152 | ||
2d0bea29 | 1153 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1154 | packet_index.timestamp_begin = get_unsigned_int(field); |
75cc2c35 MD |
1155 | } |
1156 | ||
1157 | /* read timestamp end from header */ | |
2d0bea29 | 1158 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("timestamp_end")); |
75cc2c35 | 1159 | if (len_index >= 0) { |
75cc2c35 MD |
1160 | struct definition *field; |
1161 | ||
2d0bea29 | 1162 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1163 | packet_index.timestamp_end = get_unsigned_int(field); |
75cc2c35 | 1164 | } |
41e82e00 MD |
1165 | |
1166 | /* read events discarded from header */ | |
1167 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("events_discarded")); | |
1168 | if (len_index >= 0) { | |
1169 | struct definition *field; | |
1170 | ||
1171 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); | |
1172 | packet_index.events_discarded = get_unsigned_int(field); | |
1173 | } | |
0f980a35 MD |
1174 | } else { |
1175 | /* Use file size for packet size */ | |
8c572eba | 1176 | packet_index.content_size = filestats.st_size * CHAR_BIT; |
0f980a35 | 1177 | /* Use content size if non-zero, else file size */ |
8c572eba | 1178 | packet_index.packet_size = packet_index.content_size ? : filestats.st_size * CHAR_BIT; |
0f980a35 | 1179 | } |
546293fa MD |
1180 | |
1181 | /* Validate content size and packet size values */ | |
1182 | if (packet_index.content_size > packet_index.packet_size) { | |
3394d22e | 1183 | fprintf(stderr, "[error] Content size (%zu bits) is larger than packet size (%zu bits).\n", |
546293fa MD |
1184 | packet_index.content_size, packet_index.packet_size); |
1185 | return -EINVAL; | |
1186 | } | |
1187 | ||
58b0b883 | 1188 | if (packet_index.packet_size > (filestats.st_size - packet_index.offset) * CHAR_BIT) { |
3394d22e | 1189 | fprintf(stderr, "[error] Packet size (%zu bits) is larger than remaining file size (%zu bits).\n", |
5aebb2ee | 1190 | packet_index.content_size, (size_t) (filestats.st_size - packet_index.offset) * CHAR_BIT); |
546293fa MD |
1191 | return -EINVAL; |
1192 | } | |
1193 | ||
847bf71a MD |
1194 | /* Save position after header and context */ |
1195 | packet_index.data_offset = pos->offset; | |
0f980a35 | 1196 | |
0f980a35 MD |
1197 | /* add index to packet array */ |
1198 | g_array_append_val(file_stream->pos.packet_index, packet_index); | |
1199 | ||
8c572eba | 1200 | pos->mmap_offset += packet_index.packet_size / CHAR_BIT; |
0f980a35 MD |
1201 | } |
1202 | ||
847bf71a MD |
1203 | /* Move pos back to beginning of file */ |
1204 | ctf_move_pos_slow(pos, 0, SEEK_SET); /* position for write */ | |
1205 | ||
0f980a35 MD |
1206 | return 0; |
1207 | } | |
1208 | ||
e28d4618 MD |
1209 | static |
1210 | int create_trace_definitions(struct ctf_trace *td, struct ctf_stream *stream) | |
1211 | { | |
1212 | int ret; | |
1213 | ||
1214 | if (td->packet_header_decl) { | |
1215 | struct definition *definition = | |
1216 | td->packet_header_decl->p.definition_new(&td->packet_header_decl->p, | |
1217 | stream->parent_def_scope, 0, 0, "trace.packet.header"); | |
1218 | if (!definition) { | |
1219 | ret = -EINVAL; | |
1220 | goto error; | |
1221 | } | |
1222 | stream->trace_packet_header = | |
1223 | container_of(definition, struct definition_struct, p); | |
1224 | stream->parent_def_scope = stream->trace_packet_header->p.scope; | |
1225 | } | |
1226 | ||
1227 | return 0; | |
1228 | ||
1229 | error: | |
1230 | return ret; | |
1231 | } | |
1232 | ||
0f980a35 MD |
1233 | /* |
1234 | * Note: many file streams can inherit from the same stream class | |
1235 | * description (metadata). | |
1236 | */ | |
1237 | static | |
b086c01a JD |
1238 | int ctf_open_file_stream_read(struct ctf_trace *td, const char *path, int flags, |
1239 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, | |
1240 | int whence)) | |
0f980a35 MD |
1241 | { |
1242 | int ret; | |
1243 | struct ctf_file_stream *file_stream; | |
1244 | ||
46322b33 | 1245 | ret = openat(td->dirfd, path, flags); |
a569a564 MD |
1246 | if (ret < 0) { |
1247 | perror("File stream openat()"); | |
0f980a35 | 1248 | goto error; |
a569a564 | 1249 | } |
0f980a35 | 1250 | file_stream = g_new0(struct ctf_file_stream, 1); |
b086c01a JD |
1251 | |
1252 | if (move_pos_slow) { | |
1253 | file_stream->pos.move_pos_slow = move_pos_slow; | |
1254 | } else { | |
1255 | fprintf(stderr, "[error] move_pos_slow function undefined.\n"); | |
1256 | ret = -1; | |
1257 | goto error_def; | |
1258 | } | |
1259 | ||
8563e754 | 1260 | ctf_init_pos(&file_stream->pos, ret, flags); |
2d0bea29 | 1261 | ret = create_trace_definitions(td, &file_stream->parent); |
e28d4618 MD |
1262 | if (ret) |
1263 | goto error_def; | |
25ccc85b MD |
1264 | /* |
1265 | * For now, only a single slock is supported. | |
1266 | */ | |
1267 | file_stream->parent.current_clock = td->single_clock; | |
0f980a35 MD |
1268 | ret = create_stream_packet_index(td, file_stream); |
1269 | if (ret) | |
1270 | goto error_index; | |
1271 | /* Add stream file to stream class */ | |
2d0bea29 MD |
1272 | g_ptr_array_add(file_stream->parent.stream_class->streams, |
1273 | &file_stream->parent); | |
0f980a35 MD |
1274 | return 0; |
1275 | ||
1276 | error_index: | |
2d0bea29 MD |
1277 | if (file_stream->parent.trace_packet_header) |
1278 | definition_unref(&file_stream->parent.trace_packet_header->p); | |
e28d4618 | 1279 | error_def: |
46322b33 | 1280 | ctf_fini_pos(&file_stream->pos); |
0f980a35 MD |
1281 | close(file_stream->pos.fd); |
1282 | g_free(file_stream); | |
1283 | error: | |
65102a8c MD |
1284 | return ret; |
1285 | } | |
1286 | ||
bbefb8dd | 1287 | static |
5b80ddfb | 1288 | int ctf_open_trace_read(struct ctf_trace *td, |
8c250d87 | 1289 | const char *path, int flags, |
b086c01a | 1290 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, |
ae23d232 | 1291 | int whence), FILE *metadata_fp) |
bbefb8dd MD |
1292 | { |
1293 | int ret; | |
65102a8c MD |
1294 | struct dirent *dirent; |
1295 | struct dirent *diriter; | |
1296 | size_t dirent_len; | |
bbefb8dd | 1297 | |
46322b33 | 1298 | td->flags = flags; |
bbefb8dd MD |
1299 | |
1300 | /* Open trace directory */ | |
46322b33 MD |
1301 | td->dir = opendir(path); |
1302 | if (!td->dir) { | |
3394d22e | 1303 | fprintf(stderr, "[error] Unable to open trace directory.\n"); |
bbefb8dd MD |
1304 | ret = -ENOENT; |
1305 | goto error; | |
1306 | } | |
1307 | ||
46322b33 MD |
1308 | td->dirfd = open(path, 0); |
1309 | if (td->dirfd < 0) { | |
3394d22e | 1310 | fprintf(stderr, "[error] Unable to open trace directory file descriptor.\n"); |
a569a564 MD |
1311 | perror("Trace directory open"); |
1312 | ret = -errno; | |
65102a8c MD |
1313 | goto error_dirfd; |
1314 | } | |
5b80ddfb MD |
1315 | strncpy(td->path, path, sizeof(td->path)); |
1316 | td->path[sizeof(td->path) - 1] = '\0'; | |
0f980a35 | 1317 | |
65102a8c MD |
1318 | /* |
1319 | * Keep the metadata file separate. | |
1320 | */ | |
bbefb8dd | 1321 | |
ae23d232 | 1322 | ret = ctf_open_trace_metadata_read(td, move_pos_slow, metadata_fp); |
65102a8c MD |
1323 | if (ret) { |
1324 | goto error_metadata; | |
1325 | } | |
bbefb8dd MD |
1326 | |
1327 | /* | |
1328 | * Open each stream: for each file, try to open, check magic | |
1329 | * number, and get the stream ID to add to the right location in | |
1330 | * the stream array. | |
bbefb8dd MD |
1331 | */ |
1332 | ||
65102a8c | 1333 | dirent_len = offsetof(struct dirent, d_name) + |
46322b33 | 1334 | fpathconf(td->dirfd, _PC_NAME_MAX) + 1; |
bbefb8dd | 1335 | |
65102a8c | 1336 | dirent = malloc(dirent_len); |
bbefb8dd | 1337 | |
65102a8c | 1338 | for (;;) { |
46322b33 | 1339 | ret = readdir_r(td->dir, dirent, &diriter); |
65102a8c | 1340 | if (ret) { |
3394d22e | 1341 | fprintf(stderr, "[error] Readdir error.\n"); |
65102a8c | 1342 | goto readdir_error; |
65102a8c MD |
1343 | } |
1344 | if (!diriter) | |
1345 | break; | |
d8ea2d29 MD |
1346 | /* Ignore hidden files, ., .. and metadata. */ |
1347 | if (!strncmp(diriter->d_name, ".", 1) | |
65102a8c MD |
1348 | || !strcmp(diriter->d_name, "..") |
1349 | || !strcmp(diriter->d_name, "metadata")) | |
1350 | continue; | |
b086c01a | 1351 | ret = ctf_open_file_stream_read(td, diriter->d_name, flags, move_pos_slow); |
dc48ecad | 1352 | if (ret) { |
3394d22e | 1353 | fprintf(stderr, "[error] Open file stream error.\n"); |
dc48ecad MD |
1354 | goto readdir_error; |
1355 | } | |
65102a8c | 1356 | } |
bbefb8dd | 1357 | |
65102a8c | 1358 | free(dirent); |
bbefb8dd | 1359 | return 0; |
65102a8c MD |
1360 | |
1361 | readdir_error: | |
1362 | free(dirent); | |
1363 | error_metadata: | |
46322b33 | 1364 | close(td->dirfd); |
65102a8c | 1365 | error_dirfd: |
46322b33 | 1366 | closedir(td->dir); |
bbefb8dd MD |
1367 | error: |
1368 | return ret; | |
1369 | } | |
1370 | ||
e9378815 | 1371 | static |
5b80ddfb | 1372 | struct trace_descriptor *ctf_open_trace(const char *path, int flags, |
b086c01a | 1373 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, |
ae23d232 | 1374 | int whence), FILE *metadata_fp) |
bbefb8dd | 1375 | { |
46322b33 | 1376 | struct ctf_trace *td; |
bbefb8dd MD |
1377 | int ret; |
1378 | ||
46322b33 | 1379 | td = g_new0(struct ctf_trace, 1); |
bbefb8dd | 1380 | |
8c572eba | 1381 | switch (flags & O_ACCMODE) { |
bbefb8dd | 1382 | case O_RDONLY: |
b61922b5 | 1383 | if (!path) { |
3394d22e | 1384 | fprintf(stderr, "[error] Path missing for input CTF trace.\n"); |
b61922b5 MD |
1385 | goto error; |
1386 | } | |
5b80ddfb | 1387 | ret = ctf_open_trace_read(td, path, flags, move_pos_slow, metadata_fp); |
bbefb8dd MD |
1388 | if (ret) |
1389 | goto error; | |
1390 | break; | |
989c73bc | 1391 | case O_RDWR: |
3394d22e | 1392 | fprintf(stderr, "[error] Opening CTF traces for output is not supported yet.\n"); |
46322b33 | 1393 | goto error; |
bbefb8dd | 1394 | default: |
3394d22e | 1395 | fprintf(stderr, "[error] Incorrect open flags.\n"); |
bbefb8dd MD |
1396 | goto error; |
1397 | } | |
1398 | ||
46322b33 | 1399 | return &td->parent; |
bbefb8dd MD |
1400 | error: |
1401 | g_free(td); | |
1402 | return NULL; | |
1403 | } | |
1404 | ||
f571dfb1 JD |
1405 | |
1406 | void ctf_init_mmap_pos(struct ctf_stream_pos *pos, | |
1407 | struct mmap_stream *mmap_info) | |
1408 | { | |
1409 | pos->mmap_offset = 0; | |
1410 | pos->packet_size = 0; | |
1411 | pos->content_size = 0; | |
1412 | pos->content_size_loc = NULL; | |
1413 | pos->fd = mmap_info->fd; | |
1414 | pos->base = 0; | |
1415 | pos->offset = 0; | |
1416 | pos->dummy = false; | |
1417 | pos->cur_index = 0; | |
1418 | pos->packet_index = NULL; | |
1419 | pos->prot = PROT_READ; | |
1420 | pos->flags = MAP_PRIVATE; | |
1421 | pos->parent.rw_table = read_dispatch_table; | |
1422 | pos->parent.event_cb = ctf_read_event; | |
1423 | } | |
1424 | ||
1425 | static | |
1426 | int prepare_mmap_stream_definition(struct ctf_trace *td, | |
1427 | struct ctf_file_stream *file_stream) | |
1428 | { | |
1429 | struct ctf_stream_class *stream; | |
1430 | uint64_t stream_id = 0; | |
1431 | int ret; | |
1432 | ||
1433 | file_stream->parent.stream_id = stream_id; | |
1434 | if (stream_id >= td->streams->len) { | |
3394d22e | 1435 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared " |
f571dfb1 JD |
1436 | "in metadata.\n", stream_id); |
1437 | ret = -EINVAL; | |
1438 | goto end; | |
1439 | } | |
1440 | stream = g_ptr_array_index(td->streams, stream_id); | |
1441 | if (!stream) { | |
3394d22e | 1442 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared " |
f571dfb1 JD |
1443 | "in metadata.\n", stream_id); |
1444 | ret = -EINVAL; | |
1445 | goto end; | |
1446 | } | |
1447 | file_stream->parent.stream_class = stream; | |
1448 | ret = create_stream_definitions(td, &file_stream->parent); | |
1449 | end: | |
1450 | return ret; | |
1451 | } | |
1452 | ||
1453 | static | |
1454 | int ctf_open_mmap_stream_read(struct ctf_trace *td, | |
1455 | struct mmap_stream *mmap_info, | |
1456 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, | |
1457 | int whence)) | |
1458 | { | |
1459 | int ret; | |
1460 | struct ctf_file_stream *file_stream; | |
1461 | ||
1462 | file_stream = g_new0(struct ctf_file_stream, 1); | |
1463 | ctf_init_mmap_pos(&file_stream->pos, mmap_info); | |
1464 | ||
1465 | file_stream->pos.move_pos_slow = move_pos_slow; | |
1466 | ||
1467 | ret = create_trace_definitions(td, &file_stream->parent); | |
1468 | if (ret) { | |
1469 | goto error_def; | |
1470 | } | |
1471 | ||
1472 | ret = prepare_mmap_stream_definition(td, file_stream); | |
1473 | if (ret) | |
1474 | goto error_index; | |
1475 | ||
1476 | /* Add stream file to stream class */ | |
1477 | g_ptr_array_add(file_stream->parent.stream_class->streams, | |
1478 | &file_stream->parent); | |
1479 | return 0; | |
1480 | ||
1481 | error_index: | |
1482 | if (file_stream->parent.trace_packet_header) | |
1483 | definition_unref(&file_stream->parent.trace_packet_header->p); | |
1484 | error_def: | |
1485 | g_free(file_stream); | |
1486 | return ret; | |
1487 | } | |
1488 | ||
1489 | int ctf_open_mmap_trace_read(struct ctf_trace *td, | |
1490 | struct mmap_stream_list *mmap_list, | |
1491 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, | |
1492 | int whence), | |
1493 | FILE *metadata_fp) | |
1494 | { | |
1495 | int ret; | |
1496 | struct mmap_stream *mmap_info; | |
1497 | ||
1498 | ret = ctf_open_trace_metadata_read(td, ctf_move_pos_slow, metadata_fp); | |
1499 | if (ret) { | |
1500 | goto error; | |
1501 | } | |
1502 | ||
1503 | /* | |
1504 | * for each stream, try to open, check magic number, and get the | |
1505 | * stream ID to add to the right location in the stream array. | |
1506 | */ | |
1507 | cds_list_for_each_entry(mmap_info, &mmap_list->head, list) { | |
1508 | ret = ctf_open_mmap_stream_read(td, mmap_info, move_pos_slow); | |
1509 | if (ret) { | |
3394d22e | 1510 | fprintf(stderr, "[error] Open file mmap stream error.\n"); |
f571dfb1 JD |
1511 | goto error; |
1512 | } | |
1513 | } | |
1514 | ||
1515 | return 0; | |
1516 | ||
1517 | error: | |
1518 | return ret; | |
1519 | } | |
1520 | ||
1521 | static | |
1522 | struct trace_descriptor *ctf_open_mmap_trace( | |
1523 | struct mmap_stream_list *mmap_list, | |
1524 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, int whence), | |
1525 | FILE *metadata_fp) | |
1526 | { | |
1527 | struct ctf_trace *td; | |
1528 | int ret; | |
1529 | ||
1530 | if (!metadata_fp) { | |
1531 | fprintf(stderr, "[error] No metadata file pointer associated, " | |
1532 | "required for mmap parsing\n"); | |
1533 | goto error; | |
1534 | } | |
1535 | if (!move_pos_slow) { | |
1536 | fprintf(stderr, "[error] move_pos_slow function undefined.\n"); | |
1537 | goto error; | |
1538 | } | |
1539 | td = g_new0(struct ctf_trace, 1); | |
1540 | ret = ctf_open_mmap_trace_read(td, mmap_list, move_pos_slow, metadata_fp); | |
1541 | if (ret) | |
1542 | goto error_free; | |
1543 | ||
1544 | return &td->parent; | |
1545 | ||
1546 | error_free: | |
1547 | g_free(td); | |
1548 | error: | |
1549 | return NULL; | |
1550 | } | |
1551 | ||
0f980a35 MD |
1552 | static |
1553 | void ctf_close_file_stream(struct ctf_file_stream *file_stream) | |
1554 | { | |
46322b33 | 1555 | ctf_fini_pos(&file_stream->pos); |
0f980a35 MD |
1556 | close(file_stream->pos.fd); |
1557 | } | |
1558 | ||
e9378815 | 1559 | static |
46322b33 | 1560 | void ctf_close_trace(struct trace_descriptor *tdp) |
bbefb8dd | 1561 | { |
46322b33 | 1562 | struct ctf_trace *td = container_of(tdp, struct ctf_trace, parent); |
0f980a35 MD |
1563 | int i; |
1564 | ||
46322b33 MD |
1565 | if (td->streams) { |
1566 | for (i = 0; i < td->streams->len; i++) { | |
aa6bffae | 1567 | struct ctf_stream_class *stream; |
0f980a35 | 1568 | int j; |
e9378815 | 1569 | |
46322b33 | 1570 | stream = g_ptr_array_index(td->streams, i); |
e9378815 MD |
1571 | if (!stream) |
1572 | continue; | |
2d0bea29 | 1573 | for (j = 0; j < stream->streams->len; j++) { |
0f980a35 | 1574 | struct ctf_file_stream *file_stream; |
2d0bea29 | 1575 | file_stream = container_of(g_ptr_array_index(stream->streams, j), struct ctf_file_stream, parent); |
0f980a35 MD |
1576 | ctf_close_file_stream(file_stream); |
1577 | } | |
1578 | ||
1579 | } | |
46322b33 | 1580 | g_ptr_array_free(td->streams, TRUE); |
0f980a35 | 1581 | } |
46322b33 | 1582 | closedir(td->dir); |
bbefb8dd MD |
1583 | g_free(td); |
1584 | } | |
1585 | ||
7fb21036 | 1586 | void __attribute__((constructor)) ctf_init(void) |
fc93b2bd MD |
1587 | { |
1588 | int ret; | |
1589 | ||
4c8bfb7e | 1590 | ctf_format.name = g_quark_from_static_string("ctf"); |
fc93b2bd MD |
1591 | ret = bt_register_format(&ctf_format); |
1592 | assert(!ret); | |
1593 | } | |
698f0fe4 MD |
1594 | |
1595 | /* TODO: finalize */ |