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> |
e4195791 | 25 | #include <babeltrace/ctf/events-internal.h> |
43e34335 MD |
26 | #include <babeltrace/uuid.h> |
27 | #include <babeltrace/endian.h> | |
0f980a35 | 28 | #include <inttypes.h> |
b4c19c1e | 29 | #include <stdio.h> |
0f980a35 | 30 | #include <sys/mman.h> |
bbefb8dd | 31 | #include <errno.h> |
bbefb8dd | 32 | #include <sys/types.h> |
65102a8c | 33 | #include <sys/stat.h> |
bbefb8dd | 34 | #include <fcntl.h> |
65102a8c | 35 | #include <dirent.h> |
bbefb8dd | 36 | #include <glib.h> |
65102a8c MD |
37 | #include <unistd.h> |
38 | #include <stdlib.h> | |
39 | ||
65102a8c MD |
40 | #include "metadata/ctf-scanner.h" |
41 | #include "metadata/ctf-parser.h" | |
42 | #include "metadata/ctf-ast.h" | |
c34ea0fa | 43 | #include "events-private.h" |
65102a8c | 44 | |
0f980a35 MD |
45 | /* |
46 | * We currently simply map a page to read the packet header and packet | |
8c572eba | 47 | * context to get the packet length and content length. (in bits) |
0f980a35 | 48 | */ |
8c572eba MD |
49 | #define MAX_PACKET_HEADER_LEN (getpagesize() * CHAR_BIT) |
50 | #define WRITE_PACKET_LEN (getpagesize() * 8 * CHAR_BIT) | |
0f980a35 | 51 | |
a0fe7d97 MD |
52 | #ifndef min |
53 | #define min(a, b) (((a) < (b)) ? (a) : (b)) | |
54 | #endif | |
55 | ||
7d97fad9 MD |
56 | #define NSEC_PER_SEC 1000000000ULL |
57 | ||
58 | int opt_clock_raw, | |
59 | opt_clock_seconds, | |
60 | opt_clock_date, | |
61 | opt_clock_gmt; | |
62 | ||
63 | uint64_t opt_clock_offset; | |
64 | ||
65102a8c | 65 | extern int yydebug; |
bbefb8dd | 66 | |
e9378815 | 67 | static |
5b80ddfb | 68 | struct trace_descriptor *ctf_open_trace(const char *path, int flags, |
20d0dcf9 MD |
69 | void (*packet_seek)(struct stream_pos *pos, size_t index, |
70 | int whence), | |
71 | FILE *metadata_fp); | |
e9378815 | 72 | static |
f571dfb1 JD |
73 | struct trace_descriptor *ctf_open_mmap_trace( |
74 | struct mmap_stream_list *mmap_list, | |
20d0dcf9 MD |
75 | void (*packet_seek)(struct stream_pos *pos, size_t index, |
76 | int whence), | |
f571dfb1 JD |
77 | FILE *metadata_fp); |
78 | ||
79 | static | |
bbefb8dd | 80 | void ctf_close_trace(struct trace_descriptor *descriptor); |
fc93b2bd | 81 | |
1ae19169 MD |
82 | static |
83 | rw_dispatch read_dispatch_table[] = { | |
d11e9c49 MD |
84 | [ CTF_TYPE_INTEGER ] = ctf_integer_read, |
85 | [ CTF_TYPE_FLOAT ] = ctf_float_read, | |
86 | [ CTF_TYPE_ENUM ] = ctf_enum_read, | |
87 | [ CTF_TYPE_STRING ] = ctf_string_read, | |
88 | [ CTF_TYPE_STRUCT ] = ctf_struct_rw, | |
89 | [ CTF_TYPE_VARIANT ] = ctf_variant_rw, | |
81dee1bb MD |
90 | [ CTF_TYPE_ARRAY ] = ctf_array_read, |
91 | [ CTF_TYPE_SEQUENCE ] = ctf_sequence_read, | |
d11e9c49 MD |
92 | }; |
93 | ||
1ae19169 MD |
94 | static |
95 | rw_dispatch write_dispatch_table[] = { | |
d11e9c49 MD |
96 | [ CTF_TYPE_INTEGER ] = ctf_integer_write, |
97 | [ CTF_TYPE_FLOAT ] = ctf_float_write, | |
98 | [ CTF_TYPE_ENUM ] = ctf_enum_write, | |
99 | [ CTF_TYPE_STRING ] = ctf_string_write, | |
100 | [ CTF_TYPE_STRUCT ] = ctf_struct_rw, | |
101 | [ CTF_TYPE_VARIANT ] = ctf_variant_rw, | |
81dee1bb MD |
102 | [ CTF_TYPE_ARRAY ] = ctf_array_write, |
103 | [ CTF_TYPE_SEQUENCE ] = ctf_sequence_write, | |
d11e9c49 MD |
104 | }; |
105 | ||
1ae19169 | 106 | static |
d11e9c49 | 107 | struct format ctf_format = { |
bbefb8dd | 108 | .open_trace = ctf_open_trace, |
f571dfb1 | 109 | .open_mmap_trace = ctf_open_mmap_trace, |
bbefb8dd | 110 | .close_trace = ctf_close_trace, |
fc93b2bd MD |
111 | }; |
112 | ||
25ccc85b MD |
113 | /* |
114 | * Update stream current timestamp, keep at clock frequency. | |
115 | */ | |
2b9a764d MD |
116 | static |
117 | void ctf_update_timestamp(struct ctf_stream *stream, | |
118 | struct definition_integer *integer_definition) | |
119 | { | |
120 | struct declaration_integer *integer_declaration = | |
121 | integer_definition->declaration; | |
122 | uint64_t oldval, newval, updateval; | |
123 | ||
7f3f572b | 124 | if (unlikely(integer_declaration->len == 64)) { |
2b9a764d MD |
125 | stream->timestamp = integer_definition->value._unsigned; |
126 | return; | |
127 | } | |
128 | /* keep low bits */ | |
129 | oldval = stream->timestamp; | |
130 | oldval &= (1ULL << integer_declaration->len) - 1; | |
131 | newval = integer_definition->value._unsigned; | |
132 | /* Test for overflow by comparing low bits */ | |
133 | if (newval < oldval) | |
134 | newval += 1ULL << integer_declaration->len; | |
135 | /* updateval contains old high bits, and new low bits (sum) */ | |
136 | updateval = stream->timestamp; | |
137 | updateval &= ~((1ULL << integer_declaration->len) - 1); | |
138 | updateval += newval; | |
fca04958 | 139 | stream->prev_timestamp = stream->timestamp; |
2b9a764d MD |
140 | stream->timestamp = updateval; |
141 | } | |
142 | ||
25ccc85b MD |
143 | /* |
144 | * Print timestamp, rescaling clock frequency to nanoseconds and | |
145 | * applying offsets as needed (unix time). | |
146 | */ | |
7d97fad9 MD |
147 | void ctf_print_timestamp(FILE *fp, |
148 | struct ctf_stream *stream, | |
149 | uint64_t timestamp) | |
150 | { | |
151 | uint64_t ts_sec = 0, ts_nsec; | |
7d97fad9 | 152 | |
c34ea0fa MD |
153 | if (opt_clock_raw) { |
154 | ts_nsec = ctf_get_timestamp_raw(stream, timestamp); | |
25ccc85b | 155 | } else { |
c34ea0fa | 156 | ts_nsec = ctf_get_timestamp(stream, timestamp); |
25ccc85b | 157 | } |
7d97fad9 | 158 | |
c34ea0fa | 159 | /* Add command-line offset */ |
7d97fad9 MD |
160 | ts_sec += opt_clock_offset; |
161 | ||
162 | ts_sec += ts_nsec / NSEC_PER_SEC; | |
163 | ts_nsec = ts_nsec % NSEC_PER_SEC; | |
164 | ||
165 | if (!opt_clock_seconds) { | |
166 | struct tm tm; | |
167 | time_t time_s = (time_t) ts_sec; | |
168 | ||
169 | if (!opt_clock_gmt) { | |
170 | struct tm *res; | |
171 | ||
172 | res = localtime_r(&time_s, &tm); | |
173 | if (!res) { | |
174 | fprintf(stderr, "[warning] Unable to get localtime.\n"); | |
175 | goto seconds; | |
176 | } | |
177 | } else { | |
178 | struct tm *res; | |
179 | ||
180 | res = gmtime_r(&time_s, &tm); | |
181 | if (!res) { | |
182 | fprintf(stderr, "[warning] Unable to get gmtime.\n"); | |
183 | goto seconds; | |
184 | } | |
185 | } | |
186 | if (opt_clock_date) { | |
187 | char timestr[26]; | |
188 | size_t res; | |
189 | ||
190 | /* Print date and time */ | |
191 | res = strftime(timestr, sizeof(timestr), | |
192 | "%F ", &tm); | |
193 | if (!res) { | |
194 | fprintf(stderr, "[warning] Unable to print ascii time.\n"); | |
195 | goto seconds; | |
196 | } | |
197 | fprintf(fp, "%s", timestr); | |
198 | } | |
199 | /* Print time in HH:MM:SS.ns */ | |
200 | fprintf(fp, "%02d:%02d:%02d.%09" PRIu64, | |
201 | tm.tm_hour, tm.tm_min, tm.tm_sec, ts_nsec); | |
202 | goto end; | |
203 | } | |
204 | seconds: | |
205 | fprintf(fp, "%3" PRIu64 ".%09" PRIu64, | |
206 | ts_sec, ts_nsec); | |
207 | ||
208 | end: | |
209 | return; | |
210 | } | |
211 | ||
31262354 | 212 | static |
764af3f4 | 213 | int ctf_read_event(struct stream_pos *ppos, struct ctf_stream *stream) |
31262354 MD |
214 | { |
215 | struct ctf_stream_pos *pos = | |
216 | container_of(ppos, struct ctf_stream_pos, parent); | |
764af3f4 | 217 | struct ctf_stream_class *stream_class = stream->stream_class; |
42dc00b7 | 218 | struct ctf_stream_event *event; |
31262354 | 219 | uint64_t id = 0; |
31262354 MD |
220 | int ret; |
221 | ||
3abe83c7 MD |
222 | /* We need to check for EOF here for empty files. */ |
223 | if (unlikely(pos->offset == EOF)) | |
224 | return EOF; | |
225 | ||
5f643ed7 MD |
226 | ctf_pos_get_event(pos); |
227 | ||
90fcbacc JD |
228 | /* save the current position as a restore point */ |
229 | pos->last_offset = pos->offset; | |
230 | /* we just read the event, it is consumed when used by the caller */ | |
231 | stream->consumed = 0; | |
232 | ||
3abe83c7 MD |
233 | /* |
234 | * This is the EOF check after we've advanced the position in | |
235 | * ctf_pos_get_event. | |
236 | */ | |
7f3f572b | 237 | if (unlikely(pos->offset == EOF)) |
31262354 | 238 | return EOF; |
5f643ed7 | 239 | assert(pos->offset < pos->content_size); |
31262354 MD |
240 | |
241 | /* Read event header */ | |
7f3f572b | 242 | if (likely(stream->stream_event_header)) { |
a35173fe | 243 | struct definition_integer *integer_definition; |
ccdb988e | 244 | struct definition *variant; |
a35173fe | 245 | |
e28d4618 | 246 | ret = generic_rw(ppos, &stream->stream_event_header->p); |
7f3f572b | 247 | if (unlikely(ret)) |
31262354 MD |
248 | goto error; |
249 | /* lookup event id */ | |
e28d4618 | 250 | integer_definition = lookup_integer(&stream->stream_event_header->p, "id", FALSE); |
a35173fe MD |
251 | if (integer_definition) { |
252 | id = integer_definition->value._unsigned; | |
253 | } else { | |
254 | struct definition_enum *enum_definition; | |
255 | ||
e28d4618 | 256 | enum_definition = lookup_enum(&stream->stream_event_header->p, "id", FALSE); |
a35173fe MD |
257 | if (enum_definition) { |
258 | id = enum_definition->integer->value._unsigned; | |
259 | } | |
31262354 | 260 | } |
764af3f4 | 261 | |
e28d4618 | 262 | variant = lookup_variant(&stream->stream_event_header->p, "v"); |
ccdb988e MD |
263 | if (variant) { |
264 | integer_definition = lookup_integer(variant, "id", FALSE); | |
265 | if (integer_definition) { | |
266 | id = integer_definition->value._unsigned; | |
267 | } | |
268 | } | |
c87a8eb2 | 269 | stream->event_id = id; |
ccdb988e | 270 | |
764af3f4 | 271 | /* lookup timestamp */ |
5e2eb0ae | 272 | stream->has_timestamp = 0; |
e28d4618 | 273 | integer_definition = lookup_integer(&stream->stream_event_header->p, "timestamp", FALSE); |
a35173fe | 274 | if (integer_definition) { |
2b9a764d | 275 | ctf_update_timestamp(stream, integer_definition); |
5e2eb0ae | 276 | stream->has_timestamp = 1; |
a35173fe | 277 | } else { |
ccdb988e MD |
278 | if (variant) { |
279 | integer_definition = lookup_integer(variant, "timestamp", FALSE); | |
a35173fe | 280 | if (integer_definition) { |
2b9a764d | 281 | ctf_update_timestamp(stream, integer_definition); |
5e2eb0ae | 282 | stream->has_timestamp = 1; |
a35173fe MD |
283 | } |
284 | } | |
764af3f4 | 285 | } |
31262354 MD |
286 | } |
287 | ||
288 | /* Read stream-declared event context */ | |
e28d4618 MD |
289 | if (stream->stream_event_context) { |
290 | ret = generic_rw(ppos, &stream->stream_event_context->p); | |
31262354 MD |
291 | if (ret) |
292 | goto error; | |
293 | } | |
294 | ||
7f3f572b | 295 | if (unlikely(id >= stream_class->events_by_id->len)) { |
3394d22e | 296 | fprintf(stderr, "[error] Event id %" PRIu64 " is outside range.\n", id); |
31262354 MD |
297 | return -EINVAL; |
298 | } | |
e28d4618 | 299 | event = g_ptr_array_index(stream->events_by_id, id); |
7f3f572b | 300 | if (unlikely(!event)) { |
3394d22e | 301 | fprintf(stderr, "[error] Event id %" PRIu64 " is unknown.\n", id); |
31262354 MD |
302 | return -EINVAL; |
303 | } | |
304 | ||
305 | /* Read event-declared event context */ | |
e28d4618 MD |
306 | if (event->event_context) { |
307 | ret = generic_rw(ppos, &event->event_context->p); | |
31262354 MD |
308 | if (ret) |
309 | goto error; | |
310 | } | |
311 | ||
312 | /* Read event payload */ | |
7f3f572b | 313 | if (likely(event->event_fields)) { |
e28d4618 | 314 | ret = generic_rw(ppos, &event->event_fields->p); |
31262354 MD |
315 | if (ret) |
316 | goto error; | |
317 | } | |
318 | ||
319 | return 0; | |
320 | ||
321 | error: | |
3394d22e | 322 | 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 |
323 | return ret; |
324 | } | |
325 | ||
326 | static | |
764af3f4 | 327 | int ctf_write_event(struct stream_pos *pos, struct ctf_stream *stream) |
31262354 | 328 | { |
764af3f4 | 329 | struct ctf_stream_class *stream_class = stream->stream_class; |
42dc00b7 | 330 | struct ctf_stream_event *event; |
c87a8eb2 | 331 | uint64_t id; |
31262354 MD |
332 | int ret; |
333 | ||
c87a8eb2 MD |
334 | id = stream->event_id; |
335 | ||
31262354 | 336 | /* print event header */ |
7f3f572b | 337 | if (likely(stream->stream_event_header)) { |
e28d4618 | 338 | ret = generic_rw(pos, &stream->stream_event_header->p); |
31262354 MD |
339 | if (ret) |
340 | goto error; | |
341 | } | |
342 | ||
343 | /* print stream-declared event context */ | |
e28d4618 MD |
344 | if (stream->stream_event_context) { |
345 | ret = generic_rw(pos, &stream->stream_event_context->p); | |
31262354 MD |
346 | if (ret) |
347 | goto error; | |
348 | } | |
349 | ||
7f3f572b | 350 | if (unlikely(id >= stream_class->events_by_id->len)) { |
3394d22e | 351 | fprintf(stderr, "[error] Event id %" PRIu64 " is outside range.\n", id); |
31262354 MD |
352 | return -EINVAL; |
353 | } | |
e28d4618 | 354 | event = g_ptr_array_index(stream->events_by_id, id); |
7f3f572b | 355 | if (unlikely(!event)) { |
3394d22e | 356 | fprintf(stderr, "[error] Event id %" PRIu64 " is unknown.\n", id); |
31262354 MD |
357 | return -EINVAL; |
358 | } | |
359 | ||
360 | /* print event-declared event context */ | |
e28d4618 MD |
361 | if (event->event_context) { |
362 | ret = generic_rw(pos, &event->event_context->p); | |
31262354 MD |
363 | if (ret) |
364 | goto error; | |
365 | } | |
366 | ||
367 | /* Read and print event payload */ | |
7f3f572b | 368 | if (likely(event->event_fields)) { |
e28d4618 | 369 | ret = generic_rw(pos, &event->event_fields->p); |
31262354 MD |
370 | if (ret) |
371 | goto error; | |
372 | } | |
373 | ||
374 | return 0; | |
375 | ||
376 | error: | |
3394d22e | 377 | 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 |
378 | return ret; |
379 | } | |
380 | ||
8563e754 | 381 | void ctf_init_pos(struct ctf_stream_pos *pos, int fd, int open_flags) |
8c572eba MD |
382 | { |
383 | pos->fd = fd; | |
384 | pos->mmap_offset = 0; | |
385 | pos->packet_size = 0; | |
386 | pos->content_size = 0; | |
387 | pos->content_size_loc = NULL; | |
388 | pos->base = NULL; | |
389 | pos->offset = 0; | |
390 | pos->dummy = false; | |
8c572eba | 391 | pos->cur_index = 0; |
8563e754 MD |
392 | if (fd >= 0) |
393 | pos->packet_index = g_array_new(FALSE, TRUE, | |
394 | sizeof(struct packet_index)); | |
395 | else | |
396 | pos->packet_index = NULL; | |
8563e754 MD |
397 | switch (open_flags & O_ACCMODE) { |
398 | case O_RDONLY: | |
399 | pos->prot = PROT_READ; | |
400 | pos->flags = MAP_PRIVATE; | |
401 | pos->parent.rw_table = read_dispatch_table; | |
31262354 | 402 | pos->parent.event_cb = ctf_read_event; |
8563e754 | 403 | break; |
8563e754 MD |
404 | case O_RDWR: |
405 | pos->prot = PROT_WRITE; /* Write has priority */ | |
406 | pos->flags = MAP_SHARED; | |
407 | pos->parent.rw_table = write_dispatch_table; | |
31262354 | 408 | pos->parent.event_cb = ctf_write_event; |
8563e754 | 409 | if (fd >= 0) |
06789ffd | 410 | ctf_packet_seek(&pos->parent, 0, SEEK_SET); /* position for write */ |
8563e754 MD |
411 | break; |
412 | default: | |
413 | assert(0); | |
8c572eba MD |
414 | } |
415 | } | |
416 | ||
46322b33 | 417 | void ctf_fini_pos(struct ctf_stream_pos *pos) |
8c572eba MD |
418 | { |
419 | int ret; | |
420 | ||
421 | if (pos->prot == PROT_WRITE && pos->content_size_loc) | |
422 | *pos->content_size_loc = pos->offset; | |
423 | if (pos->base) { | |
424 | /* unmap old base */ | |
425 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); | |
426 | if (ret) { | |
3394d22e | 427 | fprintf(stderr, "[error] Unable to unmap old base: %s.\n", |
8c572eba MD |
428 | strerror(errno)); |
429 | assert(0); | |
430 | } | |
431 | } | |
432 | (void) g_array_free(pos->packet_index, TRUE); | |
433 | } | |
434 | ||
20d0dcf9 MD |
435 | /* |
436 | * for SEEK_CUR: go to next packet. | |
437 | * for SEEK_POS: go to packet numer (index). | |
438 | */ | |
439 | void ctf_packet_seek(struct stream_pos *stream_pos, size_t index, int whence) | |
0f980a35 | 440 | { |
d6425aaf MD |
441 | struct ctf_stream_pos *pos = |
442 | container_of(stream_pos, struct ctf_stream_pos, parent); | |
75cc2c35 MD |
443 | struct ctf_file_stream *file_stream = |
444 | container_of(pos, struct ctf_file_stream, pos); | |
0f980a35 | 445 | int ret; |
8c572eba | 446 | off_t off; |
20d0dcf9 | 447 | struct packet_index *packet_index; |
0f980a35 | 448 | |
8c572eba MD |
449 | if (pos->prot == PROT_WRITE && pos->content_size_loc) |
450 | *pos->content_size_loc = pos->offset; | |
0f980a35 MD |
451 | |
452 | if (pos->base) { | |
453 | /* unmap old base */ | |
8c572eba | 454 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); |
0f980a35 | 455 | if (ret) { |
3394d22e | 456 | fprintf(stderr, "[error] Unable to unmap old base: %s.\n", |
0f980a35 MD |
457 | strerror(errno)); |
458 | assert(0); | |
459 | } | |
847bf71a | 460 | pos->base = NULL; |
0f980a35 MD |
461 | } |
462 | ||
8c572eba | 463 | /* |
46322b33 | 464 | * The caller should never ask for ctf_move_pos across packets, |
8c572eba MD |
465 | * except to get exactly at the beginning of the next packet. |
466 | */ | |
467 | if (pos->prot == PROT_WRITE) { | |
989c73bc MD |
468 | switch (whence) { |
469 | case SEEK_CUR: | |
470 | /* The writer will add padding */ | |
8c572eba | 471 | pos->mmap_offset += WRITE_PACKET_LEN / CHAR_BIT; |
989c73bc MD |
472 | break; |
473 | case SEEK_SET: | |
20d0dcf9 | 474 | assert(index == 0); /* only seek supported for now */ |
989c73bc MD |
475 | pos->cur_index = 0; |
476 | break; | |
477 | default: | |
478 | assert(0); | |
479 | } | |
8c572eba MD |
480 | pos->content_size = -1U; /* Unknown at this point */ |
481 | pos->packet_size = WRITE_PACKET_LEN; | |
989c73bc MD |
482 | off = posix_fallocate(pos->fd, pos->mmap_offset, |
483 | pos->packet_size / CHAR_BIT); | |
8c572eba | 484 | assert(off >= 0); |
847bf71a | 485 | pos->offset = 0; |
8c572eba | 486 | } else { |
5f643ed7 | 487 | read_next_packet: |
847bf71a MD |
488 | switch (whence) { |
489 | case SEEK_CUR: | |
41e82e00 MD |
490 | { |
491 | uint32_t events_discarded_diff; | |
492 | ||
7d97fad9 MD |
493 | if (pos->offset == EOF) { |
494 | return; | |
495 | } | |
3217ac37 | 496 | /* For printing discarded event count */ |
20d0dcf9 | 497 | packet_index = &g_array_index(pos->packet_index, |
41e82e00 | 498 | struct packet_index, pos->cur_index); |
20d0dcf9 | 499 | events_discarded_diff = packet_index->events_discarded; |
3217ac37 | 500 | file_stream->parent.prev_timestamp_end = |
20d0dcf9 | 501 | packet_index->timestamp_end; |
41e82e00 | 502 | if (pos->cur_index > 0) { |
20d0dcf9 | 503 | packet_index = &g_array_index(pos->packet_index, |
41e82e00 MD |
504 | struct packet_index, |
505 | pos->cur_index - 1); | |
20d0dcf9 | 506 | events_discarded_diff -= packet_index->events_discarded; |
41e82e00 | 507 | } |
fca04958 | 508 | file_stream->parent.events_discarded = events_discarded_diff; |
7d97fad9 | 509 | file_stream->parent.prev_timestamp = file_stream->parent.timestamp; |
847bf71a | 510 | /* The reader will expect us to skip padding */ |
8c572eba | 511 | ++pos->cur_index; |
847bf71a | 512 | break; |
41e82e00 | 513 | } |
847bf71a | 514 | case SEEK_SET: |
20d0dcf9 | 515 | pos->cur_index = index; |
fca04958 | 516 | file_stream->parent.prev_timestamp = 0; |
3217ac37 | 517 | file_stream->parent.prev_timestamp_end = 0; |
847bf71a MD |
518 | break; |
519 | default: | |
520 | assert(0); | |
521 | } | |
522 | if (pos->cur_index >= pos->packet_index->len) { | |
7d97fad9 MD |
523 | /* |
524 | * When a stream reaches the end of the | |
525 | * file, we need to show the number of | |
526 | * events discarded ourselves, because | |
527 | * there is no next event scheduled to | |
528 | * be printed in the output. | |
529 | */ | |
530 | if (file_stream->parent.events_discarded) { | |
badea1a2 JD |
531 | /* |
532 | * We need to check if we are in trace | |
533 | * read or called from packet indexing. | |
534 | * In this last case, the collection is | |
535 | * not there, so we cannot print the | |
536 | * timestamps. | |
537 | */ | |
538 | if ((&file_stream->parent)->stream_class->trace->collection) { | |
539 | fflush(stdout); | |
540 | fprintf(stderr, "[warning] Tracer discarded %d events at end of stream between [", | |
541 | file_stream->parent.events_discarded); | |
542 | ctf_print_timestamp(stderr, &file_stream->parent, | |
543 | file_stream->parent.prev_timestamp); | |
544 | fprintf(stderr, "] and ["); | |
545 | ctf_print_timestamp(stderr, &file_stream->parent, | |
546 | file_stream->parent.prev_timestamp_end); | |
547 | fprintf(stderr, "]. You should consider increasing the buffer size.\n"); | |
548 | fflush(stderr); | |
549 | } | |
7d97fad9 MD |
550 | file_stream->parent.events_discarded = 0; |
551 | } | |
670977d3 | 552 | pos->offset = EOF; |
847bf71a MD |
553 | return; |
554 | } | |
20d0dcf9 | 555 | packet_index = &g_array_index(pos->packet_index, struct packet_index, |
8c572eba | 556 | pos->cur_index); |
20d0dcf9 | 557 | pos->mmap_offset = packet_index->offset; |
8c572eba MD |
558 | |
559 | /* Lookup context/packet size in index */ | |
20d0dcf9 MD |
560 | file_stream->parent.timestamp = packet_index->timestamp_begin; |
561 | pos->content_size = packet_index->content_size; | |
562 | pos->packet_size = packet_index->packet_size; | |
563 | if (packet_index->data_offset < packet_index->content_size) { | |
75cc2c35 | 564 | pos->offset = 0; /* will read headers */ |
20d0dcf9 | 565 | } else if (packet_index->data_offset == packet_index->content_size) { |
5f643ed7 | 566 | /* empty packet */ |
20d0dcf9 | 567 | pos->offset = packet_index->data_offset; |
3abe83c7 | 568 | whence = SEEK_CUR; |
5f643ed7 | 569 | goto read_next_packet; |
7eda6fc7 | 570 | } else { |
2b9a764d MD |
571 | pos->offset = EOF; |
572 | return; | |
573 | } | |
8c572eba | 574 | } |
0f980a35 | 575 | /* map new base. Need mapping length from header. */ |
8c572eba MD |
576 | pos->base = mmap(NULL, pos->packet_size / CHAR_BIT, pos->prot, |
577 | pos->flags, pos->fd, pos->mmap_offset); | |
847bf71a | 578 | if (pos->base == MAP_FAILED) { |
3394d22e | 579 | fprintf(stderr, "[error] mmap error %s.\n", |
847bf71a MD |
580 | strerror(errno)); |
581 | assert(0); | |
582 | } | |
75cc2c35 MD |
583 | |
584 | /* update trace_packet_header and stream_packet_context */ | |
2d0bea29 | 585 | if (pos->prot != PROT_WRITE && file_stream->parent.trace_packet_header) { |
75cc2c35 | 586 | /* Read packet header */ |
2d0bea29 | 587 | ret = generic_rw(&pos->parent, &file_stream->parent.trace_packet_header->p); |
75cc2c35 MD |
588 | assert(!ret); |
589 | } | |
2d0bea29 | 590 | if (pos->prot != PROT_WRITE && file_stream->parent.stream_packet_context) { |
75cc2c35 | 591 | /* Read packet context */ |
2d0bea29 | 592 | ret = generic_rw(&pos->parent, &file_stream->parent.stream_packet_context->p); |
75cc2c35 MD |
593 | assert(!ret); |
594 | } | |
0f980a35 MD |
595 | } |
596 | ||
b4c19c1e MD |
597 | static |
598 | int packet_metadata(struct ctf_trace *td, FILE *fp) | |
599 | { | |
600 | uint32_t magic; | |
601 | size_t len; | |
602 | int ret = 0; | |
603 | ||
604 | len = fread(&magic, sizeof(magic), 1, fp); | |
a0fe7d97 | 605 | if (len != 1) { |
b4c19c1e MD |
606 | goto end; |
607 | } | |
608 | if (magic == TSDL_MAGIC) { | |
609 | ret = 1; | |
610 | td->byte_order = BYTE_ORDER; | |
0d336fdf | 611 | CTF_TRACE_SET_FIELD(td, byte_order); |
b4c19c1e MD |
612 | } else if (magic == GUINT32_SWAP_LE_BE(TSDL_MAGIC)) { |
613 | ret = 1; | |
614 | td->byte_order = (BYTE_ORDER == BIG_ENDIAN) ? | |
615 | LITTLE_ENDIAN : BIG_ENDIAN; | |
0d336fdf | 616 | CTF_TRACE_SET_FIELD(td, byte_order); |
b4c19c1e MD |
617 | } |
618 | end: | |
619 | rewind(fp); | |
620 | return ret; | |
621 | } | |
622 | ||
5c262147 MD |
623 | /* |
624 | * Returns 0 on success, -1 on error. | |
625 | */ | |
626 | static | |
627 | int check_version(unsigned int major, unsigned int minor) | |
628 | { | |
629 | switch (major) { | |
630 | case 1: | |
631 | switch (minor) { | |
632 | case 8: | |
633 | return 0; | |
634 | default: | |
635 | goto warning; | |
636 | } | |
637 | default: | |
638 | goto warning; | |
639 | ||
640 | } | |
641 | ||
642 | /* eventually return an error instead of warning */ | |
643 | warning: | |
3394d22e | 644 | fprintf(stderr, "[warning] Unsupported CTF specification version %u.%u. Trying anyway.\n", |
5c262147 MD |
645 | major, minor); |
646 | return 0; | |
647 | } | |
648 | ||
b4c19c1e MD |
649 | static |
650 | int ctf_open_trace_metadata_packet_read(struct ctf_trace *td, FILE *in, | |
651 | FILE *out) | |
652 | { | |
653 | struct metadata_packet_header header; | |
a0fe7d97 | 654 | size_t readlen, writelen, toread; |
f8254867 | 655 | char buf[4096 + 1]; /* + 1 for debug-mode \0 */ |
b4c19c1e MD |
656 | int ret = 0; |
657 | ||
a91a962e | 658 | readlen = fread(&header, header_sizeof(header), 1, in); |
a0fe7d97 | 659 | if (readlen < 1) |
b4c19c1e MD |
660 | return -EINVAL; |
661 | ||
662 | if (td->byte_order != BYTE_ORDER) { | |
663 | header.magic = GUINT32_SWAP_LE_BE(header.magic); | |
664 | header.checksum = GUINT32_SWAP_LE_BE(header.checksum); | |
665 | header.content_size = GUINT32_SWAP_LE_BE(header.content_size); | |
666 | header.packet_size = GUINT32_SWAP_LE_BE(header.packet_size); | |
667 | } | |
668 | if (header.checksum) | |
3394d22e | 669 | fprintf(stderr, "[warning] checksum verification not supported yet.\n"); |
b4c19c1e | 670 | if (header.compression_scheme) { |
3394d22e | 671 | fprintf(stderr, "[error] compression (%u) not supported yet.\n", |
b4c19c1e MD |
672 | header.compression_scheme); |
673 | return -EINVAL; | |
674 | } | |
675 | if (header.encryption_scheme) { | |
3394d22e | 676 | fprintf(stderr, "[error] encryption (%u) not supported yet.\n", |
b4c19c1e MD |
677 | header.encryption_scheme); |
678 | return -EINVAL; | |
679 | } | |
680 | if (header.checksum_scheme) { | |
3394d22e | 681 | fprintf(stderr, "[error] checksum (%u) not supported yet.\n", |
b4c19c1e MD |
682 | header.checksum_scheme); |
683 | return -EINVAL; | |
684 | } | |
5c262147 MD |
685 | if (check_version(header.major, header.minor) < 0) |
686 | return -EINVAL; | |
b4c19c1e MD |
687 | if (!CTF_TRACE_FIELD_IS_SET(td, uuid)) { |
688 | memcpy(td->uuid, header.uuid, sizeof(header.uuid)); | |
689 | CTF_TRACE_SET_FIELD(td, uuid); | |
690 | } else { | |
43e34335 | 691 | if (babeltrace_uuid_compare(header.uuid, td->uuid)) |
b4c19c1e MD |
692 | return -EINVAL; |
693 | } | |
694 | ||
255b2138 | 695 | toread = (header.content_size / CHAR_BIT) - header_sizeof(header); |
a0fe7d97 MD |
696 | |
697 | for (;;) { | |
f8254867 | 698 | readlen = fread(buf, sizeof(char), min(sizeof(buf) - 1, toread), in); |
b4c19c1e MD |
699 | if (ferror(in)) { |
700 | ret = -EINVAL; | |
701 | break; | |
702 | } | |
4152822b | 703 | if (babeltrace_debug) { |
f8254867 | 704 | buf[readlen] = '\0'; |
3394d22e | 705 | fprintf(stderr, "[debug] metadata packet read: %s\n", |
4152822b MD |
706 | buf); |
707 | } | |
708 | ||
b4c19c1e MD |
709 | writelen = fwrite(buf, sizeof(char), readlen, out); |
710 | if (writelen < readlen) { | |
711 | ret = -EIO; | |
712 | break; | |
713 | } | |
714 | if (ferror(out)) { | |
715 | ret = -EINVAL; | |
716 | break; | |
717 | } | |
a0fe7d97 MD |
718 | toread -= readlen; |
719 | if (!toread) { | |
7f4b5c4d | 720 | ret = 0; /* continue reading next packet */ |
ddbc52af | 721 | goto read_padding; |
a0fe7d97 | 722 | } |
b4c19c1e MD |
723 | } |
724 | return ret; | |
ddbc52af MD |
725 | |
726 | read_padding: | |
727 | toread = (header.packet_size - header.content_size) / CHAR_BIT; | |
728 | ret = fseek(in, toread, SEEK_CUR); | |
729 | if (ret < 0) { | |
3394d22e | 730 | fprintf(stderr, "[warning] Missing padding at end of file\n"); |
ddbc52af MD |
731 | ret = 0; |
732 | } | |
733 | return ret; | |
b4c19c1e MD |
734 | } |
735 | ||
736 | static | |
737 | int ctf_open_trace_metadata_stream_read(struct ctf_trace *td, FILE **fp, | |
738 | char **buf) | |
739 | { | |
740 | FILE *in, *out; | |
741 | size_t size; | |
742 | int ret; | |
743 | ||
744 | in = *fp; | |
c4f5487e MD |
745 | /* |
746 | * Using strlen on *buf instead of size of open_memstream | |
747 | * because its size includes garbage at the end (after final | |
748 | * \0). This is the allocated size, not the actual string size. | |
749 | */ | |
b4c19c1e | 750 | out = open_memstream(buf, &size); |
a569a564 MD |
751 | if (out == NULL) { |
752 | perror("Metadata open_memstream"); | |
b4c19c1e | 753 | return -errno; |
a569a564 | 754 | } |
b4c19c1e MD |
755 | for (;;) { |
756 | ret = ctf_open_trace_metadata_packet_read(td, in, out); | |
7f4b5c4d | 757 | if (ret) { |
b4c19c1e | 758 | break; |
7f4b5c4d MD |
759 | } |
760 | if (feof(in)) { | |
761 | ret = 0; | |
b4c19c1e MD |
762 | break; |
763 | } | |
764 | } | |
765 | fclose(out); /* flush the buffer */ | |
766 | fclose(in); | |
767 | /* open for reading */ | |
c4f5487e | 768 | *fp = fmemopen(*buf, strlen(*buf), "rb"); |
a569a564 MD |
769 | if (!*fp) { |
770 | perror("Metadata fmemopen"); | |
771 | return -errno; | |
772 | } | |
b4c19c1e MD |
773 | return 0; |
774 | } | |
775 | ||
65102a8c | 776 | static |
b086c01a | 777 | int ctf_open_trace_metadata_read(struct ctf_trace *td, |
20d0dcf9 | 778 | void (*packet_seek)(struct stream_pos *pos, size_t index, |
ae23d232 | 779 | int whence), FILE *metadata_fp) |
65102a8c MD |
780 | { |
781 | struct ctf_scanner *scanner; | |
2d0bea29 | 782 | struct ctf_file_stream *metadata_stream; |
65102a8c | 783 | FILE *fp; |
b4c19c1e | 784 | char *buf = NULL; |
65102a8c MD |
785 | int ret = 0; |
786 | ||
2d0bea29 | 787 | metadata_stream = g_new0(struct ctf_file_stream, 1); |
b086c01a | 788 | |
06789ffd MD |
789 | if (packet_seek) { |
790 | metadata_stream->pos.packet_seek = packet_seek; | |
b086c01a | 791 | } else { |
06789ffd | 792 | fprintf(stderr, "[error] packet_seek function undefined.\n"); |
b086c01a JD |
793 | ret = -1; |
794 | goto end_stream; | |
795 | } | |
796 | ||
ae23d232 JD |
797 | if (metadata_fp) { |
798 | fp = metadata_fp; | |
799 | } else { | |
800 | td->metadata = &metadata_stream->parent; | |
801 | metadata_stream->pos.fd = openat(td->dirfd, "metadata", O_RDONLY); | |
802 | if (metadata_stream->pos.fd < 0) { | |
3394d22e | 803 | fprintf(stderr, "Unable to open metadata.\n"); |
ae23d232 JD |
804 | return metadata_stream->pos.fd; |
805 | } | |
65102a8c | 806 | |
ae23d232 JD |
807 | fp = fdopen(metadata_stream->pos.fd, "r"); |
808 | if (!fp) { | |
3394d22e | 809 | fprintf(stderr, "[error] Unable to open metadata stream.\n"); |
a569a564 | 810 | perror("Metadata stream open"); |
ae23d232 JD |
811 | ret = -errno; |
812 | goto end_stream; | |
813 | } | |
814 | } | |
65102a8c MD |
815 | if (babeltrace_debug) |
816 | yydebug = 1; | |
817 | ||
b4c19c1e MD |
818 | if (packet_metadata(td, fp)) { |
819 | ret = ctf_open_trace_metadata_stream_read(td, &fp, &buf); | |
820 | if (ret) | |
821 | goto end_packet_read; | |
da75b0f7 | 822 | } else { |
5c262147 MD |
823 | unsigned int major, minor; |
824 | ssize_t nr_items; | |
8c2df3f5 | 825 | |
da75b0f7 | 826 | td->byte_order = BYTE_ORDER; |
8c2df3f5 | 827 | |
5c262147 MD |
828 | /* Check text-only metadata header and version */ |
829 | nr_items = fscanf(fp, "/* CTF %u.%u", &major, &minor); | |
830 | if (nr_items < 2) | |
3394d22e | 831 | fprintf(stderr, "[warning] Ill-shapen or missing \"/* CTF x.y\" header for text-only metadata.\n"); |
5c262147 MD |
832 | if (check_version(major, minor) < 0) { |
833 | ret = -EINVAL; | |
834 | goto end_packet_read; | |
835 | } | |
8c2df3f5 | 836 | rewind(fp); |
b4c19c1e MD |
837 | } |
838 | ||
65102a8c MD |
839 | scanner = ctf_scanner_alloc(fp); |
840 | if (!scanner) { | |
3394d22e | 841 | fprintf(stderr, "[error] Error allocating scanner\n"); |
65102a8c MD |
842 | ret = -ENOMEM; |
843 | goto end_scanner_alloc; | |
844 | } | |
845 | ret = ctf_scanner_append_ast(scanner); | |
846 | if (ret) { | |
3394d22e | 847 | fprintf(stderr, "[error] Error creating AST\n"); |
65102a8c MD |
848 | goto end; |
849 | } | |
850 | ||
851 | if (babeltrace_debug) { | |
3394d22e | 852 | ret = ctf_visitor_print_xml(stderr, 0, &scanner->ast->root); |
65102a8c | 853 | if (ret) { |
3394d22e | 854 | fprintf(stderr, "[error] Error visiting AST for XML output\n"); |
65102a8c MD |
855 | goto end; |
856 | } | |
857 | } | |
858 | ||
3394d22e | 859 | ret = ctf_visitor_semantic_check(stderr, 0, &scanner->ast->root); |
65102a8c | 860 | if (ret) { |
3394d22e | 861 | fprintf(stderr, "[error] Error in CTF semantic validation %d\n", ret); |
65102a8c MD |
862 | goto end; |
863 | } | |
3394d22e | 864 | ret = ctf_visitor_construct_metadata(stderr, 0, &scanner->ast->root, |
ac5c6ca0 | 865 | td, td->byte_order); |
65102a8c | 866 | if (ret) { |
3394d22e | 867 | fprintf(stderr, "[error] Error in CTF metadata constructor %d\n", ret); |
65102a8c MD |
868 | goto end; |
869 | } | |
870 | end: | |
871 | ctf_scanner_free(scanner); | |
872 | end_scanner_alloc: | |
b4c19c1e | 873 | end_packet_read: |
65102a8c | 874 | fclose(fp); |
b4c19c1e | 875 | free(buf); |
65102a8c | 876 | end_stream: |
2d0bea29 MD |
877 | close(metadata_stream->pos.fd); |
878 | if (ret) | |
879 | g_free(metadata_stream); | |
0f980a35 MD |
880 | return ret; |
881 | } | |
882 | ||
e28d4618 | 883 | static |
42dc00b7 MD |
884 | struct ctf_stream_event *create_event_definitions(struct ctf_trace *td, |
885 | struct ctf_stream *stream, | |
886 | struct ctf_event *event) | |
e28d4618 | 887 | { |
42dc00b7 | 888 | struct ctf_stream_event *stream_event = g_new0(struct ctf_stream_event, 1); |
e28d4618 MD |
889 | |
890 | if (event->context_decl) { | |
891 | struct definition *definition = | |
892 | event->context_decl->p.definition_new(&event->context_decl->p, | |
893 | stream->parent_def_scope, 0, 0, "event.context"); | |
894 | if (!definition) { | |
895 | goto error; | |
896 | } | |
42dc00b7 | 897 | stream_event->event_context = container_of(definition, |
e28d4618 | 898 | struct definition_struct, p); |
42dc00b7 | 899 | stream->parent_def_scope = stream_event->event_context->p.scope; |
e28d4618 MD |
900 | } |
901 | if (event->fields_decl) { | |
902 | struct definition *definition = | |
903 | event->fields_decl->p.definition_new(&event->fields_decl->p, | |
904 | stream->parent_def_scope, 0, 0, "event.fields"); | |
905 | if (!definition) { | |
906 | goto error; | |
907 | } | |
42dc00b7 | 908 | stream_event->event_fields = container_of(definition, |
e28d4618 | 909 | struct definition_struct, p); |
42dc00b7 | 910 | stream->parent_def_scope = stream_event->event_fields->p.scope; |
e28d4618 | 911 | } |
42dc00b7 | 912 | return stream_event; |
e28d4618 MD |
913 | |
914 | error: | |
42dc00b7 MD |
915 | if (stream_event->event_fields) |
916 | definition_unref(&stream_event->event_fields->p); | |
917 | if (stream_event->event_context) | |
918 | definition_unref(&stream_event->event_context->p); | |
e28d4618 MD |
919 | return NULL; |
920 | } | |
921 | ||
922 | static | |
923 | int create_stream_definitions(struct ctf_trace *td, struct ctf_stream *stream) | |
924 | { | |
925 | struct ctf_stream_class *stream_class; | |
926 | int ret; | |
927 | int i; | |
928 | ||
929 | if (stream->stream_definitions_created) | |
930 | return 0; | |
931 | ||
932 | stream_class = stream->stream_class; | |
933 | ||
934 | if (stream_class->packet_context_decl) { | |
935 | struct definition *definition = | |
936 | stream_class->packet_context_decl->p.definition_new(&stream_class->packet_context_decl->p, | |
937 | stream->parent_def_scope, 0, 0, "stream.packet.context"); | |
938 | if (!definition) { | |
939 | ret = -EINVAL; | |
940 | goto error; | |
941 | } | |
942 | stream->stream_packet_context = container_of(definition, | |
943 | struct definition_struct, p); | |
944 | stream->parent_def_scope = stream->stream_packet_context->p.scope; | |
945 | } | |
946 | if (stream_class->event_header_decl) { | |
947 | struct definition *definition = | |
948 | stream_class->event_header_decl->p.definition_new(&stream_class->event_header_decl->p, | |
949 | stream->parent_def_scope, 0, 0, "stream.event.header"); | |
950 | if (!definition) { | |
951 | ret = -EINVAL; | |
952 | goto error; | |
953 | } | |
954 | stream->stream_event_header = | |
955 | container_of(definition, struct definition_struct, p); | |
956 | stream->parent_def_scope = stream->stream_event_header->p.scope; | |
957 | } | |
958 | if (stream_class->event_context_decl) { | |
959 | struct definition *definition = | |
960 | stream_class->event_context_decl->p.definition_new(&stream_class->event_context_decl->p, | |
961 | stream->parent_def_scope, 0, 0, "stream.event.context"); | |
962 | if (!definition) { | |
963 | ret = -EINVAL; | |
964 | goto error; | |
965 | } | |
966 | stream->stream_event_context = | |
967 | container_of(definition, struct definition_struct, p); | |
968 | stream->parent_def_scope = stream->stream_event_context->p.scope; | |
969 | } | |
970 | stream->events_by_id = g_ptr_array_new(); | |
971 | g_ptr_array_set_size(stream->events_by_id, stream_class->events_by_id->len); | |
972 | for (i = 0; i < stream->events_by_id->len; i++) { | |
973 | struct ctf_event *event = g_ptr_array_index(stream_class->events_by_id, i); | |
42dc00b7 | 974 | struct ctf_stream_event *stream_event; |
e28d4618 MD |
975 | |
976 | if (!event) | |
977 | continue; | |
42dc00b7 MD |
978 | stream_event = create_event_definitions(td, stream, event); |
979 | if (!stream_event) | |
e28d4618 | 980 | goto error_event; |
42dc00b7 | 981 | g_ptr_array_index(stream->events_by_id, i) = stream_event; |
e28d4618 MD |
982 | } |
983 | return 0; | |
984 | ||
985 | error_event: | |
986 | for (i = 0; i < stream->events_by_id->len; i++) { | |
42dc00b7 MD |
987 | struct ctf_stream_event *stream_event = g_ptr_array_index(stream->events_by_id, i); |
988 | if (stream_event) | |
989 | g_free(stream_event); | |
e28d4618 MD |
990 | } |
991 | g_ptr_array_free(stream->events_by_id, TRUE); | |
992 | error: | |
993 | if (stream->stream_event_context) | |
994 | definition_unref(&stream->stream_event_context->p); | |
995 | if (stream->stream_event_header) | |
996 | definition_unref(&stream->stream_event_header->p); | |
997 | if (stream->stream_packet_context) | |
998 | definition_unref(&stream->stream_packet_context->p); | |
999 | return ret; | |
1000 | } | |
1001 | ||
0f980a35 MD |
1002 | |
1003 | static | |
46322b33 | 1004 | int create_stream_packet_index(struct ctf_trace *td, |
0f980a35 MD |
1005 | struct ctf_file_stream *file_stream) |
1006 | { | |
aa6bffae | 1007 | struct ctf_stream_class *stream; |
0f980a35 | 1008 | int len_index; |
46322b33 | 1009 | struct ctf_stream_pos *pos; |
0f980a35 MD |
1010 | struct stat filestats; |
1011 | struct packet_index packet_index; | |
1012 | int first_packet = 1; | |
1013 | int ret; | |
1014 | ||
1015 | pos = &file_stream->pos; | |
1016 | ||
1017 | ret = fstat(pos->fd, &filestats); | |
1018 | if (ret < 0) | |
1019 | return ret; | |
1020 | ||
8895362d MD |
1021 | if (filestats.st_size < MAX_PACKET_HEADER_LEN / CHAR_BIT) |
1022 | return -EINVAL; | |
1023 | ||
0f980a35 MD |
1024 | for (pos->mmap_offset = 0; pos->mmap_offset < filestats.st_size; ) { |
1025 | uint64_t stream_id = 0; | |
1026 | ||
1027 | if (pos->base) { | |
1028 | /* unmap old base */ | |
8c572eba | 1029 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); |
0f980a35 | 1030 | if (ret) { |
3394d22e | 1031 | fprintf(stderr, "[error] Unable to unmap old base: %s.\n", |
0f980a35 MD |
1032 | strerror(errno)); |
1033 | return ret; | |
1034 | } | |
8c572eba | 1035 | pos->base = NULL; |
0f980a35 MD |
1036 | } |
1037 | /* map new base. Need mapping length from header. */ | |
8c572eba | 1038 | pos->base = mmap(NULL, MAX_PACKET_HEADER_LEN / CHAR_BIT, PROT_READ, |
0f980a35 | 1039 | MAP_PRIVATE, pos->fd, pos->mmap_offset); |
dc48ecad MD |
1040 | pos->content_size = MAX_PACKET_HEADER_LEN; /* Unknown at this point */ |
1041 | pos->packet_size = MAX_PACKET_HEADER_LEN; /* Unknown at this point */ | |
0f980a35 MD |
1042 | pos->offset = 0; /* Position of the packet header */ |
1043 | ||
8c572eba MD |
1044 | packet_index.offset = pos->mmap_offset; |
1045 | packet_index.content_size = 0; | |
1046 | packet_index.packet_size = 0; | |
75cc2c35 MD |
1047 | packet_index.timestamp_begin = 0; |
1048 | packet_index.timestamp_end = 0; | |
41e82e00 | 1049 | packet_index.events_discarded = 0; |
8c572eba | 1050 | |
0f980a35 | 1051 | /* read and check header, set stream id (and check) */ |
2d0bea29 | 1052 | if (file_stream->parent.trace_packet_header) { |
0f980a35 | 1053 | /* Read packet header */ |
2d0bea29 | 1054 | ret = generic_rw(&pos->parent, &file_stream->parent.trace_packet_header->p); |
c5e74408 MD |
1055 | if (ret) |
1056 | return ret; | |
2d0bea29 | 1057 | len_index = struct_declaration_lookup_field_index(file_stream->parent.trace_packet_header->declaration, g_quark_from_static_string("magic")); |
0f980a35 | 1058 | if (len_index >= 0) { |
b1a2f580 | 1059 | struct definition *field; |
f4c56ac2 | 1060 | uint64_t magic; |
0f980a35 | 1061 | |
2d0bea29 | 1062 | field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); |
f4c56ac2 MD |
1063 | magic = get_unsigned_int(field); |
1064 | if (magic != CTF_MAGIC) { | |
3394d22e | 1065 | fprintf(stderr, "[error] Invalid magic number 0x%" PRIX64 " at packet %u (file offset %zd).\n", |
f4c56ac2 | 1066 | magic, |
8c572eba MD |
1067 | file_stream->pos.packet_index->len, |
1068 | (ssize_t) pos->mmap_offset); | |
0f980a35 MD |
1069 | return -EINVAL; |
1070 | } | |
1071 | } | |
1072 | ||
1073 | /* check uuid */ | |
2d0bea29 | 1074 | len_index = struct_declaration_lookup_field_index(file_stream->parent.trace_packet_header->declaration, g_quark_from_static_string("uuid")); |
0f980a35 MD |
1075 | if (len_index >= 0) { |
1076 | struct definition_array *defarray; | |
b1a2f580 | 1077 | struct definition *field; |
0f980a35 | 1078 | uint64_t i; |
43e34335 | 1079 | uint8_t uuidval[BABELTRACE_UUID_LEN]; |
0f980a35 | 1080 | |
2d0bea29 | 1081 | field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); |
b1a2f580 MD |
1082 | assert(field->declaration->id == CTF_TYPE_ARRAY); |
1083 | defarray = container_of(field, struct definition_array, p); | |
43e34335 | 1084 | assert(array_len(defarray) == BABELTRACE_UUID_LEN); |
0f980a35 | 1085 | |
43e34335 | 1086 | for (i = 0; i < BABELTRACE_UUID_LEN; i++) { |
0f980a35 | 1087 | struct definition *elem; |
0f980a35 MD |
1088 | |
1089 | elem = array_index(defarray, i); | |
f4c56ac2 | 1090 | uuidval[i] = get_unsigned_int(elem); |
0f980a35 | 1091 | } |
43e34335 | 1092 | ret = babeltrace_uuid_compare(td->uuid, uuidval); |
0f980a35 | 1093 | if (ret) { |
3394d22e | 1094 | fprintf(stderr, "[error] Unique Universal Identifiers do not match.\n"); |
0f980a35 MD |
1095 | return -EINVAL; |
1096 | } | |
1097 | } | |
1098 | ||
1099 | ||
2d0bea29 | 1100 | len_index = struct_declaration_lookup_field_index(file_stream->parent.trace_packet_header->declaration, g_quark_from_static_string("stream_id")); |
0f980a35 | 1101 | if (len_index >= 0) { |
b1a2f580 | 1102 | struct definition *field; |
0f980a35 | 1103 | |
2d0bea29 | 1104 | field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); |
f4c56ac2 | 1105 | stream_id = get_unsigned_int(field); |
0f980a35 MD |
1106 | } |
1107 | } | |
1108 | ||
2d0bea29 | 1109 | if (!first_packet && file_stream->parent.stream_id != stream_id) { |
3394d22e | 1110 | fprintf(stderr, "[error] Stream ID is changing within a stream.\n"); |
0f980a35 MD |
1111 | return -EINVAL; |
1112 | } | |
1113 | if (first_packet) { | |
2d0bea29 | 1114 | file_stream->parent.stream_id = stream_id; |
46322b33 | 1115 | if (stream_id >= td->streams->len) { |
3394d22e | 1116 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); |
0f980a35 MD |
1117 | return -EINVAL; |
1118 | } | |
46322b33 | 1119 | stream = g_ptr_array_index(td->streams, stream_id); |
0f980a35 | 1120 | if (!stream) { |
3394d22e | 1121 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); |
0f980a35 MD |
1122 | return -EINVAL; |
1123 | } | |
2d0bea29 | 1124 | file_stream->parent.stream_class = stream; |
01c76b24 | 1125 | ret = create_stream_definitions(td, &file_stream->parent); |
862434ec MD |
1126 | if (ret) |
1127 | return ret; | |
0f980a35 MD |
1128 | } |
1129 | first_packet = 0; | |
1130 | ||
2d0bea29 | 1131 | if (file_stream->parent.stream_packet_context) { |
dc48ecad | 1132 | /* Read packet context */ |
2d0bea29 | 1133 | ret = generic_rw(&pos->parent, &file_stream->parent.stream_packet_context->p); |
c5e74408 MD |
1134 | if (ret) |
1135 | return ret; | |
dc48ecad | 1136 | /* read content size from header */ |
2d0bea29 | 1137 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("content_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.content_size = get_unsigned_int(field); |
dc48ecad MD |
1143 | } else { |
1144 | /* Use file size for packet size */ | |
8c572eba | 1145 | packet_index.content_size = filestats.st_size * CHAR_BIT; |
dc48ecad MD |
1146 | } |
1147 | ||
1148 | /* read packet size from header */ | |
2d0bea29 | 1149 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("packet_size")); |
dc48ecad | 1150 | if (len_index >= 0) { |
b1a2f580 | 1151 | struct definition *field; |
dc48ecad | 1152 | |
2d0bea29 | 1153 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1154 | packet_index.packet_size = get_unsigned_int(field); |
dc48ecad MD |
1155 | } else { |
1156 | /* Use content size if non-zero, else file size */ | |
8c572eba | 1157 | packet_index.packet_size = packet_index.content_size ? : filestats.st_size * CHAR_BIT; |
dc48ecad | 1158 | } |
75cc2c35 MD |
1159 | |
1160 | /* read timestamp begin from header */ | |
2d0bea29 | 1161 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("timestamp_begin")); |
75cc2c35 | 1162 | if (len_index >= 0) { |
75cc2c35 MD |
1163 | struct definition *field; |
1164 | ||
2d0bea29 | 1165 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1166 | packet_index.timestamp_begin = get_unsigned_int(field); |
75cc2c35 MD |
1167 | } |
1168 | ||
1169 | /* read timestamp end from header */ | |
2d0bea29 | 1170 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("timestamp_end")); |
75cc2c35 | 1171 | if (len_index >= 0) { |
75cc2c35 MD |
1172 | struct definition *field; |
1173 | ||
2d0bea29 | 1174 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1175 | packet_index.timestamp_end = get_unsigned_int(field); |
75cc2c35 | 1176 | } |
41e82e00 MD |
1177 | |
1178 | /* read events discarded from header */ | |
1179 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("events_discarded")); | |
1180 | if (len_index >= 0) { | |
1181 | struct definition *field; | |
1182 | ||
1183 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); | |
1184 | packet_index.events_discarded = get_unsigned_int(field); | |
1185 | } | |
0f980a35 MD |
1186 | } else { |
1187 | /* Use file size for packet size */ | |
8c572eba | 1188 | packet_index.content_size = filestats.st_size * CHAR_BIT; |
0f980a35 | 1189 | /* Use content size if non-zero, else file size */ |
8c572eba | 1190 | packet_index.packet_size = packet_index.content_size ? : filestats.st_size * CHAR_BIT; |
0f980a35 | 1191 | } |
546293fa MD |
1192 | |
1193 | /* Validate content size and packet size values */ | |
1194 | if (packet_index.content_size > packet_index.packet_size) { | |
7e18eedf | 1195 | fprintf(stderr, "[error] Content size (%" PRIu64 " bits) is larger than packet size (%" PRIu64 " bits).\n", |
546293fa MD |
1196 | packet_index.content_size, packet_index.packet_size); |
1197 | return -EINVAL; | |
1198 | } | |
1199 | ||
7e18eedf JN |
1200 | if (packet_index.packet_size > ((uint64_t)filestats.st_size - packet_index.offset) * CHAR_BIT) { |
1201 | fprintf(stderr, "[error] Packet size (%" PRIu64 " bits) is larger than remaining file size (%" PRIu64 " bits).\n", | |
1202 | packet_index.content_size, ((uint64_t)filestats.st_size - packet_index.offset) * CHAR_BIT); | |
546293fa MD |
1203 | return -EINVAL; |
1204 | } | |
1205 | ||
847bf71a MD |
1206 | /* Save position after header and context */ |
1207 | packet_index.data_offset = pos->offset; | |
0f980a35 | 1208 | |
0f980a35 MD |
1209 | /* add index to packet array */ |
1210 | g_array_append_val(file_stream->pos.packet_index, packet_index); | |
1211 | ||
8c572eba | 1212 | pos->mmap_offset += packet_index.packet_size / CHAR_BIT; |
0f980a35 MD |
1213 | } |
1214 | ||
847bf71a | 1215 | /* Move pos back to beginning of file */ |
06789ffd | 1216 | ctf_packet_seek(&pos->parent, 0, SEEK_SET); /* position for write */ |
847bf71a | 1217 | |
0f980a35 MD |
1218 | return 0; |
1219 | } | |
1220 | ||
e28d4618 MD |
1221 | static |
1222 | int create_trace_definitions(struct ctf_trace *td, struct ctf_stream *stream) | |
1223 | { | |
1224 | int ret; | |
1225 | ||
1226 | if (td->packet_header_decl) { | |
1227 | struct definition *definition = | |
1228 | td->packet_header_decl->p.definition_new(&td->packet_header_decl->p, | |
1229 | stream->parent_def_scope, 0, 0, "trace.packet.header"); | |
1230 | if (!definition) { | |
1231 | ret = -EINVAL; | |
1232 | goto error; | |
1233 | } | |
1234 | stream->trace_packet_header = | |
1235 | container_of(definition, struct definition_struct, p); | |
1236 | stream->parent_def_scope = stream->trace_packet_header->p.scope; | |
1237 | } | |
1238 | ||
1239 | return 0; | |
1240 | ||
1241 | error: | |
1242 | return ret; | |
1243 | } | |
1244 | ||
0f980a35 MD |
1245 | /* |
1246 | * Note: many file streams can inherit from the same stream class | |
1247 | * description (metadata). | |
1248 | */ | |
1249 | static | |
b086c01a | 1250 | int ctf_open_file_stream_read(struct ctf_trace *td, const char *path, int flags, |
20d0dcf9 | 1251 | void (*packet_seek)(struct stream_pos *pos, size_t index, |
b086c01a | 1252 | int whence)) |
0f980a35 MD |
1253 | { |
1254 | int ret; | |
1255 | struct ctf_file_stream *file_stream; | |
1256 | ||
46322b33 | 1257 | ret = openat(td->dirfd, path, flags); |
a569a564 MD |
1258 | if (ret < 0) { |
1259 | perror("File stream openat()"); | |
0f980a35 | 1260 | goto error; |
a569a564 | 1261 | } |
0f980a35 | 1262 | file_stream = g_new0(struct ctf_file_stream, 1); |
b086c01a | 1263 | |
06789ffd MD |
1264 | if (packet_seek) { |
1265 | file_stream->pos.packet_seek = packet_seek; | |
b086c01a | 1266 | } else { |
06789ffd | 1267 | fprintf(stderr, "[error] packet_seek function undefined.\n"); |
b086c01a JD |
1268 | ret = -1; |
1269 | goto error_def; | |
1270 | } | |
1271 | ||
8563e754 | 1272 | ctf_init_pos(&file_stream->pos, ret, flags); |
2d0bea29 | 1273 | ret = create_trace_definitions(td, &file_stream->parent); |
e28d4618 MD |
1274 | if (ret) |
1275 | goto error_def; | |
25ccc85b MD |
1276 | /* |
1277 | * For now, only a single slock is supported. | |
1278 | */ | |
1279 | file_stream->parent.current_clock = td->single_clock; | |
0f980a35 MD |
1280 | ret = create_stream_packet_index(td, file_stream); |
1281 | if (ret) | |
1282 | goto error_index; | |
1283 | /* Add stream file to stream class */ | |
2d0bea29 MD |
1284 | g_ptr_array_add(file_stream->parent.stream_class->streams, |
1285 | &file_stream->parent); | |
0f980a35 MD |
1286 | return 0; |
1287 | ||
1288 | error_index: | |
2d0bea29 MD |
1289 | if (file_stream->parent.trace_packet_header) |
1290 | definition_unref(&file_stream->parent.trace_packet_header->p); | |
e28d4618 | 1291 | error_def: |
46322b33 | 1292 | ctf_fini_pos(&file_stream->pos); |
0f980a35 MD |
1293 | close(file_stream->pos.fd); |
1294 | g_free(file_stream); | |
1295 | error: | |
65102a8c MD |
1296 | return ret; |
1297 | } | |
1298 | ||
bbefb8dd | 1299 | static |
5b80ddfb | 1300 | int ctf_open_trace_read(struct ctf_trace *td, |
8c250d87 | 1301 | const char *path, int flags, |
20d0dcf9 | 1302 | void (*packet_seek)(struct stream_pos *pos, size_t index, |
ae23d232 | 1303 | int whence), FILE *metadata_fp) |
bbefb8dd MD |
1304 | { |
1305 | int ret; | |
65102a8c MD |
1306 | struct dirent *dirent; |
1307 | struct dirent *diriter; | |
1308 | size_t dirent_len; | |
bbefb8dd | 1309 | |
46322b33 | 1310 | td->flags = flags; |
bbefb8dd MD |
1311 | |
1312 | /* Open trace directory */ | |
46322b33 MD |
1313 | td->dir = opendir(path); |
1314 | if (!td->dir) { | |
3394d22e | 1315 | fprintf(stderr, "[error] Unable to open trace directory.\n"); |
bbefb8dd MD |
1316 | ret = -ENOENT; |
1317 | goto error; | |
1318 | } | |
1319 | ||
46322b33 MD |
1320 | td->dirfd = open(path, 0); |
1321 | if (td->dirfd < 0) { | |
3394d22e | 1322 | fprintf(stderr, "[error] Unable to open trace directory file descriptor.\n"); |
a569a564 MD |
1323 | perror("Trace directory open"); |
1324 | ret = -errno; | |
65102a8c MD |
1325 | goto error_dirfd; |
1326 | } | |
5b80ddfb MD |
1327 | strncpy(td->path, path, sizeof(td->path)); |
1328 | td->path[sizeof(td->path) - 1] = '\0'; | |
0f980a35 | 1329 | |
65102a8c MD |
1330 | /* |
1331 | * Keep the metadata file separate. | |
1332 | */ | |
bbefb8dd | 1333 | |
06789ffd | 1334 | ret = ctf_open_trace_metadata_read(td, packet_seek, metadata_fp); |
65102a8c MD |
1335 | if (ret) { |
1336 | goto error_metadata; | |
1337 | } | |
bbefb8dd MD |
1338 | |
1339 | /* | |
1340 | * Open each stream: for each file, try to open, check magic | |
1341 | * number, and get the stream ID to add to the right location in | |
1342 | * the stream array. | |
bbefb8dd MD |
1343 | */ |
1344 | ||
65102a8c | 1345 | dirent_len = offsetof(struct dirent, d_name) + |
46322b33 | 1346 | fpathconf(td->dirfd, _PC_NAME_MAX) + 1; |
bbefb8dd | 1347 | |
65102a8c | 1348 | dirent = malloc(dirent_len); |
bbefb8dd | 1349 | |
65102a8c | 1350 | for (;;) { |
46322b33 | 1351 | ret = readdir_r(td->dir, dirent, &diriter); |
65102a8c | 1352 | if (ret) { |
3394d22e | 1353 | fprintf(stderr, "[error] Readdir error.\n"); |
65102a8c | 1354 | goto readdir_error; |
65102a8c MD |
1355 | } |
1356 | if (!diriter) | |
1357 | break; | |
d8ea2d29 MD |
1358 | /* Ignore hidden files, ., .. and metadata. */ |
1359 | if (!strncmp(diriter->d_name, ".", 1) | |
65102a8c MD |
1360 | || !strcmp(diriter->d_name, "..") |
1361 | || !strcmp(diriter->d_name, "metadata")) | |
1362 | continue; | |
06789ffd MD |
1363 | ret = ctf_open_file_stream_read(td, diriter->d_name, |
1364 | flags, packet_seek); | |
dc48ecad | 1365 | if (ret) { |
3394d22e | 1366 | fprintf(stderr, "[error] Open file stream error.\n"); |
dc48ecad MD |
1367 | goto readdir_error; |
1368 | } | |
65102a8c | 1369 | } |
bbefb8dd | 1370 | |
65102a8c | 1371 | free(dirent); |
bbefb8dd | 1372 | return 0; |
65102a8c MD |
1373 | |
1374 | readdir_error: | |
1375 | free(dirent); | |
1376 | error_metadata: | |
46322b33 | 1377 | close(td->dirfd); |
65102a8c | 1378 | error_dirfd: |
46322b33 | 1379 | closedir(td->dir); |
bbefb8dd MD |
1380 | error: |
1381 | return ret; | |
1382 | } | |
1383 | ||
e9378815 | 1384 | static |
5b80ddfb | 1385 | struct trace_descriptor *ctf_open_trace(const char *path, int flags, |
20d0dcf9 | 1386 | void (*packet_seek)(struct stream_pos *pos, size_t index, |
ae23d232 | 1387 | int whence), FILE *metadata_fp) |
bbefb8dd | 1388 | { |
46322b33 | 1389 | struct ctf_trace *td; |
bbefb8dd MD |
1390 | int ret; |
1391 | ||
2715de36 MD |
1392 | /* |
1393 | * If packet_seek is NULL, we provide our default version. | |
1394 | */ | |
1395 | if (!packet_seek) | |
1396 | packet_seek = ctf_packet_seek; | |
1397 | ||
46322b33 | 1398 | td = g_new0(struct ctf_trace, 1); |
bbefb8dd | 1399 | |
8c572eba | 1400 | switch (flags & O_ACCMODE) { |
bbefb8dd | 1401 | case O_RDONLY: |
b61922b5 | 1402 | if (!path) { |
3394d22e | 1403 | fprintf(stderr, "[error] Path missing for input CTF trace.\n"); |
b61922b5 MD |
1404 | goto error; |
1405 | } | |
06789ffd | 1406 | ret = ctf_open_trace_read(td, path, flags, packet_seek, metadata_fp); |
bbefb8dd MD |
1407 | if (ret) |
1408 | goto error; | |
1409 | break; | |
989c73bc | 1410 | case O_RDWR: |
3394d22e | 1411 | fprintf(stderr, "[error] Opening CTF traces for output is not supported yet.\n"); |
46322b33 | 1412 | goto error; |
bbefb8dd | 1413 | default: |
3394d22e | 1414 | fprintf(stderr, "[error] Incorrect open flags.\n"); |
bbefb8dd MD |
1415 | goto error; |
1416 | } | |
1417 | ||
46322b33 | 1418 | return &td->parent; |
bbefb8dd MD |
1419 | error: |
1420 | g_free(td); | |
1421 | return NULL; | |
1422 | } | |
1423 | ||
f571dfb1 JD |
1424 | |
1425 | void ctf_init_mmap_pos(struct ctf_stream_pos *pos, | |
1426 | struct mmap_stream *mmap_info) | |
1427 | { | |
1428 | pos->mmap_offset = 0; | |
1429 | pos->packet_size = 0; | |
1430 | pos->content_size = 0; | |
1431 | pos->content_size_loc = NULL; | |
1432 | pos->fd = mmap_info->fd; | |
1433 | pos->base = 0; | |
1434 | pos->offset = 0; | |
1435 | pos->dummy = false; | |
1436 | pos->cur_index = 0; | |
1437 | pos->packet_index = NULL; | |
1438 | pos->prot = PROT_READ; | |
1439 | pos->flags = MAP_PRIVATE; | |
1440 | pos->parent.rw_table = read_dispatch_table; | |
1441 | pos->parent.event_cb = ctf_read_event; | |
1442 | } | |
1443 | ||
1444 | static | |
1445 | int prepare_mmap_stream_definition(struct ctf_trace *td, | |
1446 | struct ctf_file_stream *file_stream) | |
1447 | { | |
1448 | struct ctf_stream_class *stream; | |
1449 | uint64_t stream_id = 0; | |
1450 | int ret; | |
1451 | ||
1452 | file_stream->parent.stream_id = stream_id; | |
1453 | if (stream_id >= td->streams->len) { | |
3394d22e | 1454 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared " |
f571dfb1 JD |
1455 | "in metadata.\n", stream_id); |
1456 | ret = -EINVAL; | |
1457 | goto end; | |
1458 | } | |
1459 | stream = g_ptr_array_index(td->streams, stream_id); | |
1460 | if (!stream) { | |
3394d22e | 1461 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared " |
f571dfb1 JD |
1462 | "in metadata.\n", stream_id); |
1463 | ret = -EINVAL; | |
1464 | goto end; | |
1465 | } | |
1466 | file_stream->parent.stream_class = stream; | |
1467 | ret = create_stream_definitions(td, &file_stream->parent); | |
1468 | end: | |
1469 | return ret; | |
1470 | } | |
1471 | ||
1472 | static | |
1473 | int ctf_open_mmap_stream_read(struct ctf_trace *td, | |
1474 | struct mmap_stream *mmap_info, | |
20d0dcf9 | 1475 | void (*packet_seek)(struct stream_pos *pos, size_t index, |
f571dfb1 JD |
1476 | int whence)) |
1477 | { | |
1478 | int ret; | |
1479 | struct ctf_file_stream *file_stream; | |
1480 | ||
1481 | file_stream = g_new0(struct ctf_file_stream, 1); | |
1482 | ctf_init_mmap_pos(&file_stream->pos, mmap_info); | |
1483 | ||
06789ffd | 1484 | file_stream->pos.packet_seek = packet_seek; |
f571dfb1 JD |
1485 | |
1486 | ret = create_trace_definitions(td, &file_stream->parent); | |
1487 | if (ret) { | |
1488 | goto error_def; | |
1489 | } | |
1490 | ||
1491 | ret = prepare_mmap_stream_definition(td, file_stream); | |
1492 | if (ret) | |
1493 | goto error_index; | |
1494 | ||
1495 | /* Add stream file to stream class */ | |
1496 | g_ptr_array_add(file_stream->parent.stream_class->streams, | |
1497 | &file_stream->parent); | |
1498 | return 0; | |
1499 | ||
1500 | error_index: | |
1501 | if (file_stream->parent.trace_packet_header) | |
1502 | definition_unref(&file_stream->parent.trace_packet_header->p); | |
1503 | error_def: | |
1504 | g_free(file_stream); | |
1505 | return ret; | |
1506 | } | |
1507 | ||
1508 | int ctf_open_mmap_trace_read(struct ctf_trace *td, | |
1509 | struct mmap_stream_list *mmap_list, | |
20d0dcf9 | 1510 | void (*packet_seek)(struct stream_pos *pos, size_t index, |
f571dfb1 JD |
1511 | int whence), |
1512 | FILE *metadata_fp) | |
1513 | { | |
1514 | int ret; | |
1515 | struct mmap_stream *mmap_info; | |
1516 | ||
06789ffd | 1517 | ret = ctf_open_trace_metadata_read(td, ctf_packet_seek, metadata_fp); |
f571dfb1 JD |
1518 | if (ret) { |
1519 | goto error; | |
1520 | } | |
1521 | ||
1522 | /* | |
1523 | * for each stream, try to open, check magic number, and get the | |
1524 | * stream ID to add to the right location in the stream array. | |
1525 | */ | |
3122e6f0 | 1526 | bt_list_for_each_entry(mmap_info, &mmap_list->head, list) { |
06789ffd | 1527 | ret = ctf_open_mmap_stream_read(td, mmap_info, packet_seek); |
f571dfb1 | 1528 | if (ret) { |
3394d22e | 1529 | fprintf(stderr, "[error] Open file mmap stream error.\n"); |
f571dfb1 JD |
1530 | goto error; |
1531 | } | |
1532 | } | |
1533 | ||
1534 | return 0; | |
1535 | ||
1536 | error: | |
1537 | return ret; | |
1538 | } | |
1539 | ||
1540 | static | |
1541 | struct trace_descriptor *ctf_open_mmap_trace( | |
1542 | struct mmap_stream_list *mmap_list, | |
20d0dcf9 MD |
1543 | void (*packet_seek)(struct stream_pos *pos, size_t index, |
1544 | int whence), | |
f571dfb1 JD |
1545 | FILE *metadata_fp) |
1546 | { | |
1547 | struct ctf_trace *td; | |
1548 | int ret; | |
1549 | ||
1550 | if (!metadata_fp) { | |
1551 | fprintf(stderr, "[error] No metadata file pointer associated, " | |
1552 | "required for mmap parsing\n"); | |
1553 | goto error; | |
1554 | } | |
06789ffd MD |
1555 | if (!packet_seek) { |
1556 | fprintf(stderr, "[error] packet_seek function undefined.\n"); | |
f571dfb1 JD |
1557 | goto error; |
1558 | } | |
1559 | td = g_new0(struct ctf_trace, 1); | |
06789ffd | 1560 | ret = ctf_open_mmap_trace_read(td, mmap_list, packet_seek, metadata_fp); |
f571dfb1 JD |
1561 | if (ret) |
1562 | goto error_free; | |
1563 | ||
1564 | return &td->parent; | |
1565 | ||
1566 | error_free: | |
1567 | g_free(td); | |
1568 | error: | |
1569 | return NULL; | |
1570 | } | |
1571 | ||
0f980a35 MD |
1572 | static |
1573 | void ctf_close_file_stream(struct ctf_file_stream *file_stream) | |
1574 | { | |
46322b33 | 1575 | ctf_fini_pos(&file_stream->pos); |
0f980a35 MD |
1576 | close(file_stream->pos.fd); |
1577 | } | |
1578 | ||
e9378815 | 1579 | static |
46322b33 | 1580 | void ctf_close_trace(struct trace_descriptor *tdp) |
bbefb8dd | 1581 | { |
46322b33 | 1582 | struct ctf_trace *td = container_of(tdp, struct ctf_trace, parent); |
0f980a35 MD |
1583 | int i; |
1584 | ||
46322b33 MD |
1585 | if (td->streams) { |
1586 | for (i = 0; i < td->streams->len; i++) { | |
aa6bffae | 1587 | struct ctf_stream_class *stream; |
0f980a35 | 1588 | int j; |
e9378815 | 1589 | |
46322b33 | 1590 | stream = g_ptr_array_index(td->streams, i); |
e9378815 MD |
1591 | if (!stream) |
1592 | continue; | |
2d0bea29 | 1593 | for (j = 0; j < stream->streams->len; j++) { |
0f980a35 | 1594 | struct ctf_file_stream *file_stream; |
2d0bea29 | 1595 | file_stream = container_of(g_ptr_array_index(stream->streams, j), struct ctf_file_stream, parent); |
0f980a35 MD |
1596 | ctf_close_file_stream(file_stream); |
1597 | } | |
1598 | ||
1599 | } | |
46322b33 | 1600 | g_ptr_array_free(td->streams, TRUE); |
0f980a35 | 1601 | } |
46322b33 | 1602 | closedir(td->dir); |
bbefb8dd MD |
1603 | g_free(td); |
1604 | } | |
1605 | ||
7fb21036 | 1606 | void __attribute__((constructor)) ctf_init(void) |
fc93b2bd MD |
1607 | { |
1608 | int ret; | |
1609 | ||
4c8bfb7e | 1610 | ctf_format.name = g_quark_from_static_string("ctf"); |
fc93b2bd MD |
1611 | ret = bt_register_format(&ctf_format); |
1612 | assert(!ret); | |
1613 | } | |
698f0fe4 MD |
1614 | |
1615 | /* TODO: finalize */ |