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 |
8c250d87 | 67 | struct trace_descriptor *ctf_open_trace(const char *collection_path, 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 | ||
2b9a764d MD |
110 | static |
111 | void ctf_update_timestamp(struct ctf_stream *stream, | |
112 | struct definition_integer *integer_definition) | |
113 | { | |
114 | struct declaration_integer *integer_declaration = | |
115 | integer_definition->declaration; | |
116 | uint64_t oldval, newval, updateval; | |
117 | ||
7f3f572b | 118 | if (unlikely(integer_declaration->len == 64)) { |
2b9a764d MD |
119 | stream->timestamp = integer_definition->value._unsigned; |
120 | return; | |
121 | } | |
122 | /* keep low bits */ | |
123 | oldval = stream->timestamp; | |
124 | oldval &= (1ULL << integer_declaration->len) - 1; | |
125 | newval = integer_definition->value._unsigned; | |
126 | /* Test for overflow by comparing low bits */ | |
127 | if (newval < oldval) | |
128 | newval += 1ULL << integer_declaration->len; | |
129 | /* updateval contains old high bits, and new low bits (sum) */ | |
130 | updateval = stream->timestamp; | |
131 | updateval &= ~((1ULL << integer_declaration->len) - 1); | |
132 | updateval += newval; | |
fca04958 | 133 | stream->prev_timestamp = stream->timestamp; |
2b9a764d MD |
134 | stream->timestamp = updateval; |
135 | } | |
136 | ||
7d97fad9 MD |
137 | void ctf_print_timestamp(FILE *fp, |
138 | struct ctf_stream *stream, | |
139 | uint64_t timestamp) | |
140 | { | |
141 | uint64_t ts_sec = 0, ts_nsec; | |
142 | struct ctf_trace *trace = stream->stream_class->trace; | |
143 | struct trace_collection *tc = trace->collection; | |
144 | struct ctf_clock *clock = tc->single_clock; | |
145 | ||
146 | ts_nsec = timestamp; | |
147 | ||
148 | /* Add offsets */ | |
149 | if (!opt_clock_raw && clock) { | |
150 | ts_sec += clock->offset_s; | |
151 | ts_nsec += clock->offset; | |
152 | } | |
153 | ts_sec += opt_clock_offset; | |
154 | ||
155 | ts_sec += ts_nsec / NSEC_PER_SEC; | |
156 | ts_nsec = ts_nsec % NSEC_PER_SEC; | |
157 | ||
158 | if (!opt_clock_seconds) { | |
159 | struct tm tm; | |
160 | time_t time_s = (time_t) ts_sec; | |
161 | ||
162 | if (!opt_clock_gmt) { | |
163 | struct tm *res; | |
164 | ||
165 | res = localtime_r(&time_s, &tm); | |
166 | if (!res) { | |
167 | fprintf(stderr, "[warning] Unable to get localtime.\n"); | |
168 | goto seconds; | |
169 | } | |
170 | } else { | |
171 | struct tm *res; | |
172 | ||
173 | res = gmtime_r(&time_s, &tm); | |
174 | if (!res) { | |
175 | fprintf(stderr, "[warning] Unable to get gmtime.\n"); | |
176 | goto seconds; | |
177 | } | |
178 | } | |
179 | if (opt_clock_date) { | |
180 | char timestr[26]; | |
181 | size_t res; | |
182 | ||
183 | /* Print date and time */ | |
184 | res = strftime(timestr, sizeof(timestr), | |
185 | "%F ", &tm); | |
186 | if (!res) { | |
187 | fprintf(stderr, "[warning] Unable to print ascii time.\n"); | |
188 | goto seconds; | |
189 | } | |
190 | fprintf(fp, "%s", timestr); | |
191 | } | |
192 | /* Print time in HH:MM:SS.ns */ | |
193 | fprintf(fp, "%02d:%02d:%02d.%09" PRIu64, | |
194 | tm.tm_hour, tm.tm_min, tm.tm_sec, ts_nsec); | |
195 | goto end; | |
196 | } | |
197 | seconds: | |
198 | fprintf(fp, "%3" PRIu64 ".%09" PRIu64, | |
199 | ts_sec, ts_nsec); | |
200 | ||
201 | end: | |
202 | return; | |
203 | } | |
204 | ||
31262354 | 205 | static |
764af3f4 | 206 | int ctf_read_event(struct stream_pos *ppos, struct ctf_stream *stream) |
31262354 MD |
207 | { |
208 | struct ctf_stream_pos *pos = | |
209 | container_of(ppos, struct ctf_stream_pos, parent); | |
764af3f4 | 210 | struct ctf_stream_class *stream_class = stream->stream_class; |
42dc00b7 | 211 | struct ctf_stream_event *event; |
31262354 | 212 | uint64_t id = 0; |
31262354 MD |
213 | int ret; |
214 | ||
3abe83c7 MD |
215 | /* We need to check for EOF here for empty files. */ |
216 | if (unlikely(pos->offset == EOF)) | |
217 | return EOF; | |
218 | ||
5f643ed7 MD |
219 | ctf_pos_get_event(pos); |
220 | ||
3abe83c7 MD |
221 | /* |
222 | * This is the EOF check after we've advanced the position in | |
223 | * ctf_pos_get_event. | |
224 | */ | |
7f3f572b | 225 | if (unlikely(pos->offset == EOF)) |
31262354 | 226 | return EOF; |
5f643ed7 | 227 | assert(pos->offset < pos->content_size); |
31262354 MD |
228 | |
229 | /* Read event header */ | |
7f3f572b | 230 | if (likely(stream->stream_event_header)) { |
a35173fe | 231 | struct definition_integer *integer_definition; |
ccdb988e | 232 | struct definition *variant; |
a35173fe | 233 | |
e28d4618 | 234 | ret = generic_rw(ppos, &stream->stream_event_header->p); |
7f3f572b | 235 | if (unlikely(ret)) |
31262354 MD |
236 | goto error; |
237 | /* lookup event id */ | |
e28d4618 | 238 | integer_definition = lookup_integer(&stream->stream_event_header->p, "id", FALSE); |
a35173fe MD |
239 | if (integer_definition) { |
240 | id = integer_definition->value._unsigned; | |
241 | } else { | |
242 | struct definition_enum *enum_definition; | |
243 | ||
e28d4618 | 244 | enum_definition = lookup_enum(&stream->stream_event_header->p, "id", FALSE); |
a35173fe MD |
245 | if (enum_definition) { |
246 | id = enum_definition->integer->value._unsigned; | |
247 | } | |
31262354 | 248 | } |
764af3f4 | 249 | |
e28d4618 | 250 | variant = lookup_variant(&stream->stream_event_header->p, "v"); |
ccdb988e MD |
251 | if (variant) { |
252 | integer_definition = lookup_integer(variant, "id", FALSE); | |
253 | if (integer_definition) { | |
254 | id = integer_definition->value._unsigned; | |
255 | } | |
256 | } | |
c87a8eb2 | 257 | stream->event_id = id; |
ccdb988e | 258 | |
764af3f4 | 259 | /* lookup timestamp */ |
5e2eb0ae | 260 | stream->has_timestamp = 0; |
e28d4618 | 261 | integer_definition = lookup_integer(&stream->stream_event_header->p, "timestamp", FALSE); |
a35173fe | 262 | if (integer_definition) { |
2b9a764d | 263 | ctf_update_timestamp(stream, integer_definition); |
5e2eb0ae | 264 | stream->has_timestamp = 1; |
a35173fe | 265 | } else { |
ccdb988e MD |
266 | if (variant) { |
267 | integer_definition = lookup_integer(variant, "timestamp", FALSE); | |
a35173fe | 268 | if (integer_definition) { |
2b9a764d | 269 | ctf_update_timestamp(stream, integer_definition); |
5e2eb0ae | 270 | stream->has_timestamp = 1; |
a35173fe MD |
271 | } |
272 | } | |
764af3f4 | 273 | } |
31262354 MD |
274 | } |
275 | ||
276 | /* Read stream-declared event context */ | |
e28d4618 MD |
277 | if (stream->stream_event_context) { |
278 | ret = generic_rw(ppos, &stream->stream_event_context->p); | |
31262354 MD |
279 | if (ret) |
280 | goto error; | |
281 | } | |
282 | ||
7f3f572b | 283 | if (unlikely(id >= stream_class->events_by_id->len)) { |
3394d22e | 284 | fprintf(stderr, "[error] Event id %" PRIu64 " is outside range.\n", id); |
31262354 MD |
285 | return -EINVAL; |
286 | } | |
e28d4618 | 287 | event = g_ptr_array_index(stream->events_by_id, id); |
7f3f572b | 288 | if (unlikely(!event)) { |
3394d22e | 289 | fprintf(stderr, "[error] Event id %" PRIu64 " is unknown.\n", id); |
31262354 MD |
290 | return -EINVAL; |
291 | } | |
292 | ||
293 | /* Read event-declared event context */ | |
e28d4618 MD |
294 | if (event->event_context) { |
295 | ret = generic_rw(ppos, &event->event_context->p); | |
31262354 MD |
296 | if (ret) |
297 | goto error; | |
298 | } | |
299 | ||
300 | /* Read event payload */ | |
7f3f572b | 301 | if (likely(event->event_fields)) { |
e28d4618 | 302 | ret = generic_rw(ppos, &event->event_fields->p); |
31262354 MD |
303 | if (ret) |
304 | goto error; | |
305 | } | |
306 | ||
307 | return 0; | |
308 | ||
309 | error: | |
3394d22e | 310 | 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 |
311 | return ret; |
312 | } | |
313 | ||
314 | static | |
764af3f4 | 315 | int ctf_write_event(struct stream_pos *pos, struct ctf_stream *stream) |
31262354 | 316 | { |
764af3f4 | 317 | struct ctf_stream_class *stream_class = stream->stream_class; |
42dc00b7 | 318 | struct ctf_stream_event *event; |
c87a8eb2 | 319 | uint64_t id; |
31262354 MD |
320 | int ret; |
321 | ||
c87a8eb2 MD |
322 | id = stream->event_id; |
323 | ||
31262354 | 324 | /* print event header */ |
7f3f572b | 325 | if (likely(stream->stream_event_header)) { |
e28d4618 | 326 | ret = generic_rw(pos, &stream->stream_event_header->p); |
31262354 MD |
327 | if (ret) |
328 | goto error; | |
329 | } | |
330 | ||
331 | /* print stream-declared event context */ | |
e28d4618 MD |
332 | if (stream->stream_event_context) { |
333 | ret = generic_rw(pos, &stream->stream_event_context->p); | |
31262354 MD |
334 | if (ret) |
335 | goto error; | |
336 | } | |
337 | ||
7f3f572b | 338 | if (unlikely(id >= stream_class->events_by_id->len)) { |
3394d22e | 339 | fprintf(stderr, "[error] Event id %" PRIu64 " is outside range.\n", id); |
31262354 MD |
340 | return -EINVAL; |
341 | } | |
e28d4618 | 342 | event = g_ptr_array_index(stream->events_by_id, id); |
7f3f572b | 343 | if (unlikely(!event)) { |
3394d22e | 344 | fprintf(stderr, "[error] Event id %" PRIu64 " is unknown.\n", id); |
31262354 MD |
345 | return -EINVAL; |
346 | } | |
347 | ||
348 | /* print event-declared event context */ | |
e28d4618 MD |
349 | if (event->event_context) { |
350 | ret = generic_rw(pos, &event->event_context->p); | |
31262354 MD |
351 | if (ret) |
352 | goto error; | |
353 | } | |
354 | ||
355 | /* Read and print event payload */ | |
7f3f572b | 356 | if (likely(event->event_fields)) { |
e28d4618 | 357 | ret = generic_rw(pos, &event->event_fields->p); |
31262354 MD |
358 | if (ret) |
359 | goto error; | |
360 | } | |
361 | ||
362 | return 0; | |
363 | ||
364 | error: | |
3394d22e | 365 | 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 |
366 | return ret; |
367 | } | |
368 | ||
8563e754 | 369 | void ctf_init_pos(struct ctf_stream_pos *pos, int fd, int open_flags) |
8c572eba MD |
370 | { |
371 | pos->fd = fd; | |
372 | pos->mmap_offset = 0; | |
373 | pos->packet_size = 0; | |
374 | pos->content_size = 0; | |
375 | pos->content_size_loc = NULL; | |
376 | pos->base = NULL; | |
377 | pos->offset = 0; | |
378 | pos->dummy = false; | |
8c572eba | 379 | pos->cur_index = 0; |
8563e754 MD |
380 | if (fd >= 0) |
381 | pos->packet_index = g_array_new(FALSE, TRUE, | |
382 | sizeof(struct packet_index)); | |
383 | else | |
384 | pos->packet_index = NULL; | |
8563e754 MD |
385 | switch (open_flags & O_ACCMODE) { |
386 | case O_RDONLY: | |
387 | pos->prot = PROT_READ; | |
388 | pos->flags = MAP_PRIVATE; | |
389 | pos->parent.rw_table = read_dispatch_table; | |
31262354 | 390 | pos->parent.event_cb = ctf_read_event; |
8563e754 | 391 | break; |
8563e754 MD |
392 | case O_RDWR: |
393 | pos->prot = PROT_WRITE; /* Write has priority */ | |
394 | pos->flags = MAP_SHARED; | |
395 | pos->parent.rw_table = write_dispatch_table; | |
31262354 | 396 | pos->parent.event_cb = ctf_write_event; |
8563e754 | 397 | if (fd >= 0) |
847bf71a | 398 | ctf_move_pos_slow(pos, 0, SEEK_SET); /* position for write */ |
8563e754 MD |
399 | break; |
400 | default: | |
401 | assert(0); | |
8c572eba MD |
402 | } |
403 | } | |
404 | ||
46322b33 | 405 | void ctf_fini_pos(struct ctf_stream_pos *pos) |
8c572eba MD |
406 | { |
407 | int ret; | |
408 | ||
409 | if (pos->prot == PROT_WRITE && pos->content_size_loc) | |
410 | *pos->content_size_loc = pos->offset; | |
411 | if (pos->base) { | |
412 | /* unmap old base */ | |
413 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); | |
414 | if (ret) { | |
3394d22e | 415 | fprintf(stderr, "[error] Unable to unmap old base: %s.\n", |
8c572eba MD |
416 | strerror(errno)); |
417 | assert(0); | |
418 | } | |
419 | } | |
420 | (void) g_array_free(pos->packet_index, TRUE); | |
421 | } | |
422 | ||
847bf71a | 423 | void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence) |
0f980a35 | 424 | { |
75cc2c35 MD |
425 | struct ctf_file_stream *file_stream = |
426 | container_of(pos, struct ctf_file_stream, pos); | |
0f980a35 | 427 | int ret; |
8c572eba MD |
428 | off_t off; |
429 | struct packet_index *index; | |
0f980a35 | 430 | |
8c572eba MD |
431 | if (pos->prot == PROT_WRITE && pos->content_size_loc) |
432 | *pos->content_size_loc = pos->offset; | |
0f980a35 MD |
433 | |
434 | if (pos->base) { | |
435 | /* unmap old base */ | |
8c572eba | 436 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); |
0f980a35 | 437 | if (ret) { |
3394d22e | 438 | fprintf(stderr, "[error] Unable to unmap old base: %s.\n", |
0f980a35 MD |
439 | strerror(errno)); |
440 | assert(0); | |
441 | } | |
847bf71a | 442 | pos->base = NULL; |
0f980a35 MD |
443 | } |
444 | ||
8c572eba | 445 | /* |
46322b33 | 446 | * The caller should never ask for ctf_move_pos across packets, |
8c572eba MD |
447 | * except to get exactly at the beginning of the next packet. |
448 | */ | |
449 | if (pos->prot == PROT_WRITE) { | |
989c73bc MD |
450 | switch (whence) { |
451 | case SEEK_CUR: | |
452 | /* The writer will add padding */ | |
453 | assert(pos->offset + offset == pos->packet_size); | |
8c572eba | 454 | pos->mmap_offset += WRITE_PACKET_LEN / CHAR_BIT; |
989c73bc MD |
455 | break; |
456 | case SEEK_SET: | |
457 | assert(offset == 0); /* only seek supported for now */ | |
458 | pos->cur_index = 0; | |
459 | break; | |
460 | default: | |
461 | assert(0); | |
462 | } | |
8c572eba MD |
463 | pos->content_size = -1U; /* Unknown at this point */ |
464 | pos->packet_size = WRITE_PACKET_LEN; | |
989c73bc MD |
465 | off = posix_fallocate(pos->fd, pos->mmap_offset, |
466 | pos->packet_size / CHAR_BIT); | |
8c572eba | 467 | assert(off >= 0); |
847bf71a | 468 | pos->offset = 0; |
8c572eba | 469 | } else { |
5f643ed7 | 470 | read_next_packet: |
847bf71a MD |
471 | switch (whence) { |
472 | case SEEK_CUR: | |
41e82e00 MD |
473 | { |
474 | uint32_t events_discarded_diff; | |
475 | ||
7d97fad9 MD |
476 | if (pos->offset == EOF) { |
477 | return; | |
478 | } | |
3217ac37 | 479 | /* For printing discarded event count */ |
41e82e00 MD |
480 | index = &g_array_index(pos->packet_index, |
481 | struct packet_index, pos->cur_index); | |
482 | events_discarded_diff = index->events_discarded; | |
3217ac37 MD |
483 | file_stream->parent.prev_timestamp_end = |
484 | index->timestamp_end; | |
41e82e00 MD |
485 | if (pos->cur_index > 0) { |
486 | index = &g_array_index(pos->packet_index, | |
487 | struct packet_index, | |
488 | pos->cur_index - 1); | |
489 | events_discarded_diff -= index->events_discarded; | |
490 | } | |
fca04958 | 491 | file_stream->parent.events_discarded = events_discarded_diff; |
7d97fad9 | 492 | file_stream->parent.prev_timestamp = file_stream->parent.timestamp; |
847bf71a MD |
493 | /* The reader will expect us to skip padding */ |
494 | assert(pos->offset + offset == pos->content_size); | |
8c572eba | 495 | ++pos->cur_index; |
847bf71a | 496 | break; |
41e82e00 | 497 | } |
847bf71a MD |
498 | case SEEK_SET: |
499 | assert(offset == 0); /* only seek supported for now */ | |
500 | pos->cur_index = 0; | |
fca04958 | 501 | file_stream->parent.prev_timestamp = 0; |
3217ac37 | 502 | file_stream->parent.prev_timestamp_end = 0; |
847bf71a MD |
503 | break; |
504 | default: | |
505 | assert(0); | |
506 | } | |
507 | if (pos->cur_index >= pos->packet_index->len) { | |
7d97fad9 MD |
508 | /* |
509 | * When a stream reaches the end of the | |
510 | * file, we need to show the number of | |
511 | * events discarded ourselves, because | |
512 | * there is no next event scheduled to | |
513 | * be printed in the output. | |
514 | */ | |
515 | if (file_stream->parent.events_discarded) { | |
516 | fflush(stdout); | |
517 | fprintf(stderr, "[warning] Tracer discarded %d events at end of stream between [", | |
518 | file_stream->parent.events_discarded); | |
519 | ctf_print_timestamp(stderr, &file_stream->parent, | |
520 | file_stream->parent.prev_timestamp); | |
521 | fprintf(stderr, "] and ["); | |
522 | ctf_print_timestamp(stderr, &file_stream->parent, | |
523 | file_stream->parent.prev_timestamp_end); | |
524 | fprintf(stderr, "]. You should consider increasing the buffer size.\n"); | |
525 | fflush(stderr); | |
526 | file_stream->parent.events_discarded = 0; | |
527 | } | |
670977d3 | 528 | pos->offset = EOF; |
847bf71a MD |
529 | return; |
530 | } | |
8c572eba MD |
531 | index = &g_array_index(pos->packet_index, struct packet_index, |
532 | pos->cur_index); | |
533 | pos->mmap_offset = index->offset; | |
534 | ||
535 | /* Lookup context/packet size in index */ | |
2d0bea29 | 536 | file_stream->parent.timestamp = index->timestamp_begin; |
8c572eba MD |
537 | pos->content_size = index->content_size; |
538 | pos->packet_size = index->packet_size; | |
5f643ed7 | 539 | if (index->data_offset < index->content_size) { |
75cc2c35 | 540 | pos->offset = 0; /* will read headers */ |
5f643ed7 MD |
541 | } else if (index->data_offset == index->content_size) { |
542 | /* empty packet */ | |
543 | pos->offset = index->data_offset; | |
544 | offset = 0; | |
3abe83c7 | 545 | whence = SEEK_CUR; |
5f643ed7 | 546 | goto read_next_packet; |
7eda6fc7 | 547 | } else { |
2b9a764d MD |
548 | pos->offset = EOF; |
549 | return; | |
550 | } | |
8c572eba | 551 | } |
0f980a35 | 552 | /* map new base. Need mapping length from header. */ |
8c572eba MD |
553 | pos->base = mmap(NULL, pos->packet_size / CHAR_BIT, pos->prot, |
554 | pos->flags, pos->fd, pos->mmap_offset); | |
847bf71a | 555 | if (pos->base == MAP_FAILED) { |
3394d22e | 556 | fprintf(stderr, "[error] mmap error %s.\n", |
847bf71a MD |
557 | strerror(errno)); |
558 | assert(0); | |
559 | } | |
75cc2c35 MD |
560 | |
561 | /* update trace_packet_header and stream_packet_context */ | |
2d0bea29 | 562 | if (pos->prot != PROT_WRITE && file_stream->parent.trace_packet_header) { |
75cc2c35 | 563 | /* Read packet header */ |
2d0bea29 | 564 | ret = generic_rw(&pos->parent, &file_stream->parent.trace_packet_header->p); |
75cc2c35 MD |
565 | assert(!ret); |
566 | } | |
2d0bea29 | 567 | if (pos->prot != PROT_WRITE && file_stream->parent.stream_packet_context) { |
75cc2c35 | 568 | /* Read packet context */ |
2d0bea29 | 569 | ret = generic_rw(&pos->parent, &file_stream->parent.stream_packet_context->p); |
75cc2c35 MD |
570 | assert(!ret); |
571 | } | |
0f980a35 MD |
572 | } |
573 | ||
b4c19c1e MD |
574 | static |
575 | int packet_metadata(struct ctf_trace *td, FILE *fp) | |
576 | { | |
577 | uint32_t magic; | |
578 | size_t len; | |
579 | int ret = 0; | |
580 | ||
581 | len = fread(&magic, sizeof(magic), 1, fp); | |
a0fe7d97 | 582 | if (len != 1) { |
b4c19c1e MD |
583 | goto end; |
584 | } | |
585 | if (magic == TSDL_MAGIC) { | |
586 | ret = 1; | |
587 | td->byte_order = BYTE_ORDER; | |
0d336fdf | 588 | CTF_TRACE_SET_FIELD(td, byte_order); |
b4c19c1e MD |
589 | } else if (magic == GUINT32_SWAP_LE_BE(TSDL_MAGIC)) { |
590 | ret = 1; | |
591 | td->byte_order = (BYTE_ORDER == BIG_ENDIAN) ? | |
592 | LITTLE_ENDIAN : BIG_ENDIAN; | |
0d336fdf | 593 | CTF_TRACE_SET_FIELD(td, byte_order); |
b4c19c1e MD |
594 | } |
595 | end: | |
596 | rewind(fp); | |
597 | return ret; | |
598 | } | |
599 | ||
5c262147 MD |
600 | /* |
601 | * Returns 0 on success, -1 on error. | |
602 | */ | |
603 | static | |
604 | int check_version(unsigned int major, unsigned int minor) | |
605 | { | |
606 | switch (major) { | |
607 | case 1: | |
608 | switch (minor) { | |
609 | case 8: | |
610 | return 0; | |
611 | default: | |
612 | goto warning; | |
613 | } | |
614 | default: | |
615 | goto warning; | |
616 | ||
617 | } | |
618 | ||
619 | /* eventually return an error instead of warning */ | |
620 | warning: | |
3394d22e | 621 | fprintf(stderr, "[warning] Unsupported CTF specification version %u.%u. Trying anyway.\n", |
5c262147 MD |
622 | major, minor); |
623 | return 0; | |
624 | } | |
625 | ||
b4c19c1e MD |
626 | static |
627 | int ctf_open_trace_metadata_packet_read(struct ctf_trace *td, FILE *in, | |
628 | FILE *out) | |
629 | { | |
630 | struct metadata_packet_header header; | |
a0fe7d97 | 631 | size_t readlen, writelen, toread; |
f8254867 | 632 | char buf[4096 + 1]; /* + 1 for debug-mode \0 */ |
b4c19c1e MD |
633 | int ret = 0; |
634 | ||
a91a962e | 635 | readlen = fread(&header, header_sizeof(header), 1, in); |
a0fe7d97 | 636 | if (readlen < 1) |
b4c19c1e MD |
637 | return -EINVAL; |
638 | ||
639 | if (td->byte_order != BYTE_ORDER) { | |
640 | header.magic = GUINT32_SWAP_LE_BE(header.magic); | |
641 | header.checksum = GUINT32_SWAP_LE_BE(header.checksum); | |
642 | header.content_size = GUINT32_SWAP_LE_BE(header.content_size); | |
643 | header.packet_size = GUINT32_SWAP_LE_BE(header.packet_size); | |
644 | } | |
645 | if (header.checksum) | |
3394d22e | 646 | fprintf(stderr, "[warning] checksum verification not supported yet.\n"); |
b4c19c1e | 647 | if (header.compression_scheme) { |
3394d22e | 648 | fprintf(stderr, "[error] compression (%u) not supported yet.\n", |
b4c19c1e MD |
649 | header.compression_scheme); |
650 | return -EINVAL; | |
651 | } | |
652 | if (header.encryption_scheme) { | |
3394d22e | 653 | fprintf(stderr, "[error] encryption (%u) not supported yet.\n", |
b4c19c1e MD |
654 | header.encryption_scheme); |
655 | return -EINVAL; | |
656 | } | |
657 | if (header.checksum_scheme) { | |
3394d22e | 658 | fprintf(stderr, "[error] checksum (%u) not supported yet.\n", |
b4c19c1e MD |
659 | header.checksum_scheme); |
660 | return -EINVAL; | |
661 | } | |
5c262147 MD |
662 | if (check_version(header.major, header.minor) < 0) |
663 | return -EINVAL; | |
b4c19c1e MD |
664 | if (!CTF_TRACE_FIELD_IS_SET(td, uuid)) { |
665 | memcpy(td->uuid, header.uuid, sizeof(header.uuid)); | |
666 | CTF_TRACE_SET_FIELD(td, uuid); | |
667 | } else { | |
668 | if (uuid_compare(header.uuid, td->uuid)) | |
669 | return -EINVAL; | |
670 | } | |
671 | ||
255b2138 | 672 | toread = (header.content_size / CHAR_BIT) - header_sizeof(header); |
a0fe7d97 MD |
673 | |
674 | for (;;) { | |
f8254867 | 675 | readlen = fread(buf, sizeof(char), min(sizeof(buf) - 1, toread), in); |
b4c19c1e MD |
676 | if (ferror(in)) { |
677 | ret = -EINVAL; | |
678 | break; | |
679 | } | |
4152822b | 680 | if (babeltrace_debug) { |
f8254867 | 681 | buf[readlen] = '\0'; |
3394d22e | 682 | fprintf(stderr, "[debug] metadata packet read: %s\n", |
4152822b MD |
683 | buf); |
684 | } | |
685 | ||
b4c19c1e MD |
686 | writelen = fwrite(buf, sizeof(char), readlen, out); |
687 | if (writelen < readlen) { | |
688 | ret = -EIO; | |
689 | break; | |
690 | } | |
691 | if (ferror(out)) { | |
692 | ret = -EINVAL; | |
693 | break; | |
694 | } | |
a0fe7d97 MD |
695 | toread -= readlen; |
696 | if (!toread) { | |
7f4b5c4d | 697 | ret = 0; /* continue reading next packet */ |
ddbc52af | 698 | goto read_padding; |
a0fe7d97 | 699 | } |
b4c19c1e MD |
700 | } |
701 | return ret; | |
ddbc52af MD |
702 | |
703 | read_padding: | |
704 | toread = (header.packet_size - header.content_size) / CHAR_BIT; | |
705 | ret = fseek(in, toread, SEEK_CUR); | |
706 | if (ret < 0) { | |
3394d22e | 707 | fprintf(stderr, "[warning] Missing padding at end of file\n"); |
ddbc52af MD |
708 | ret = 0; |
709 | } | |
710 | return ret; | |
b4c19c1e MD |
711 | } |
712 | ||
713 | static | |
714 | int ctf_open_trace_metadata_stream_read(struct ctf_trace *td, FILE **fp, | |
715 | char **buf) | |
716 | { | |
717 | FILE *in, *out; | |
718 | size_t size; | |
719 | int ret; | |
720 | ||
721 | in = *fp; | |
c4f5487e MD |
722 | /* |
723 | * Using strlen on *buf instead of size of open_memstream | |
724 | * because its size includes garbage at the end (after final | |
725 | * \0). This is the allocated size, not the actual string size. | |
726 | */ | |
b4c19c1e | 727 | out = open_memstream(buf, &size); |
a569a564 MD |
728 | if (out == NULL) { |
729 | perror("Metadata open_memstream"); | |
b4c19c1e | 730 | return -errno; |
a569a564 | 731 | } |
b4c19c1e MD |
732 | for (;;) { |
733 | ret = ctf_open_trace_metadata_packet_read(td, in, out); | |
7f4b5c4d | 734 | if (ret) { |
b4c19c1e | 735 | break; |
7f4b5c4d MD |
736 | } |
737 | if (feof(in)) { | |
738 | ret = 0; | |
b4c19c1e MD |
739 | break; |
740 | } | |
741 | } | |
742 | fclose(out); /* flush the buffer */ | |
743 | fclose(in); | |
744 | /* open for reading */ | |
c4f5487e | 745 | *fp = fmemopen(*buf, strlen(*buf), "rb"); |
a569a564 MD |
746 | if (!*fp) { |
747 | perror("Metadata fmemopen"); | |
748 | return -errno; | |
749 | } | |
b4c19c1e MD |
750 | return 0; |
751 | } | |
752 | ||
65102a8c | 753 | static |
b086c01a JD |
754 | int ctf_open_trace_metadata_read(struct ctf_trace *td, |
755 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, | |
ae23d232 | 756 | int whence), FILE *metadata_fp) |
65102a8c MD |
757 | { |
758 | struct ctf_scanner *scanner; | |
2d0bea29 | 759 | struct ctf_file_stream *metadata_stream; |
65102a8c | 760 | FILE *fp; |
b4c19c1e | 761 | char *buf = NULL; |
65102a8c MD |
762 | int ret = 0; |
763 | ||
2d0bea29 | 764 | metadata_stream = g_new0(struct ctf_file_stream, 1); |
b086c01a JD |
765 | |
766 | if (move_pos_slow) { | |
767 | metadata_stream->pos.move_pos_slow = move_pos_slow; | |
768 | } else { | |
769 | fprintf(stderr, "[error] move_pos_slow function undefined.\n"); | |
770 | ret = -1; | |
771 | goto end_stream; | |
772 | } | |
773 | ||
ae23d232 JD |
774 | if (metadata_fp) { |
775 | fp = metadata_fp; | |
776 | } else { | |
777 | td->metadata = &metadata_stream->parent; | |
778 | metadata_stream->pos.fd = openat(td->dirfd, "metadata", O_RDONLY); | |
779 | if (metadata_stream->pos.fd < 0) { | |
3394d22e | 780 | fprintf(stderr, "Unable to open metadata.\n"); |
ae23d232 JD |
781 | return metadata_stream->pos.fd; |
782 | } | |
65102a8c | 783 | |
ae23d232 JD |
784 | fp = fdopen(metadata_stream->pos.fd, "r"); |
785 | if (!fp) { | |
3394d22e | 786 | fprintf(stderr, "[error] Unable to open metadata stream.\n"); |
a569a564 | 787 | perror("Metadata stream open"); |
ae23d232 JD |
788 | ret = -errno; |
789 | goto end_stream; | |
790 | } | |
791 | } | |
65102a8c MD |
792 | if (babeltrace_debug) |
793 | yydebug = 1; | |
794 | ||
b4c19c1e MD |
795 | if (packet_metadata(td, fp)) { |
796 | ret = ctf_open_trace_metadata_stream_read(td, &fp, &buf); | |
797 | if (ret) | |
798 | goto end_packet_read; | |
da75b0f7 | 799 | } else { |
5c262147 MD |
800 | unsigned int major, minor; |
801 | ssize_t nr_items; | |
8c2df3f5 | 802 | |
da75b0f7 | 803 | td->byte_order = BYTE_ORDER; |
8c2df3f5 | 804 | |
5c262147 MD |
805 | /* Check text-only metadata header and version */ |
806 | nr_items = fscanf(fp, "/* CTF %u.%u", &major, &minor); | |
807 | if (nr_items < 2) | |
3394d22e | 808 | fprintf(stderr, "[warning] Ill-shapen or missing \"/* CTF x.y\" header for text-only metadata.\n"); |
5c262147 MD |
809 | if (check_version(major, minor) < 0) { |
810 | ret = -EINVAL; | |
811 | goto end_packet_read; | |
812 | } | |
8c2df3f5 | 813 | rewind(fp); |
b4c19c1e MD |
814 | } |
815 | ||
65102a8c MD |
816 | scanner = ctf_scanner_alloc(fp); |
817 | if (!scanner) { | |
3394d22e | 818 | fprintf(stderr, "[error] Error allocating scanner\n"); |
65102a8c MD |
819 | ret = -ENOMEM; |
820 | goto end_scanner_alloc; | |
821 | } | |
822 | ret = ctf_scanner_append_ast(scanner); | |
823 | if (ret) { | |
3394d22e | 824 | fprintf(stderr, "[error] Error creating AST\n"); |
65102a8c MD |
825 | goto end; |
826 | } | |
827 | ||
828 | if (babeltrace_debug) { | |
3394d22e | 829 | ret = ctf_visitor_print_xml(stderr, 0, &scanner->ast->root); |
65102a8c | 830 | if (ret) { |
3394d22e | 831 | fprintf(stderr, "[error] Error visiting AST for XML output\n"); |
65102a8c MD |
832 | goto end; |
833 | } | |
834 | } | |
835 | ||
3394d22e | 836 | ret = ctf_visitor_semantic_check(stderr, 0, &scanner->ast->root); |
65102a8c | 837 | if (ret) { |
3394d22e | 838 | fprintf(stderr, "[error] Error in CTF semantic validation %d\n", ret); |
65102a8c MD |
839 | goto end; |
840 | } | |
3394d22e | 841 | ret = ctf_visitor_construct_metadata(stderr, 0, &scanner->ast->root, |
ac5c6ca0 | 842 | td, td->byte_order); |
65102a8c | 843 | if (ret) { |
3394d22e | 844 | fprintf(stderr, "[error] Error in CTF metadata constructor %d\n", ret); |
65102a8c MD |
845 | goto end; |
846 | } | |
847 | end: | |
848 | ctf_scanner_free(scanner); | |
849 | end_scanner_alloc: | |
b4c19c1e | 850 | end_packet_read: |
65102a8c | 851 | fclose(fp); |
b4c19c1e | 852 | free(buf); |
65102a8c | 853 | end_stream: |
2d0bea29 MD |
854 | close(metadata_stream->pos.fd); |
855 | if (ret) | |
856 | g_free(metadata_stream); | |
0f980a35 MD |
857 | return ret; |
858 | } | |
859 | ||
e28d4618 | 860 | static |
42dc00b7 MD |
861 | struct ctf_stream_event *create_event_definitions(struct ctf_trace *td, |
862 | struct ctf_stream *stream, | |
863 | struct ctf_event *event) | |
e28d4618 | 864 | { |
42dc00b7 | 865 | struct ctf_stream_event *stream_event = g_new0(struct ctf_stream_event, 1); |
e28d4618 MD |
866 | |
867 | if (event->context_decl) { | |
868 | struct definition *definition = | |
869 | event->context_decl->p.definition_new(&event->context_decl->p, | |
870 | stream->parent_def_scope, 0, 0, "event.context"); | |
871 | if (!definition) { | |
872 | goto error; | |
873 | } | |
42dc00b7 | 874 | stream_event->event_context = container_of(definition, |
e28d4618 | 875 | struct definition_struct, p); |
42dc00b7 | 876 | stream->parent_def_scope = stream_event->event_context->p.scope; |
e28d4618 MD |
877 | } |
878 | if (event->fields_decl) { | |
879 | struct definition *definition = | |
880 | event->fields_decl->p.definition_new(&event->fields_decl->p, | |
881 | stream->parent_def_scope, 0, 0, "event.fields"); | |
882 | if (!definition) { | |
883 | goto error; | |
884 | } | |
42dc00b7 | 885 | stream_event->event_fields = container_of(definition, |
e28d4618 | 886 | struct definition_struct, p); |
42dc00b7 | 887 | stream->parent_def_scope = stream_event->event_fields->p.scope; |
e28d4618 | 888 | } |
42dc00b7 | 889 | return stream_event; |
e28d4618 MD |
890 | |
891 | error: | |
42dc00b7 MD |
892 | if (stream_event->event_fields) |
893 | definition_unref(&stream_event->event_fields->p); | |
894 | if (stream_event->event_context) | |
895 | definition_unref(&stream_event->event_context->p); | |
e28d4618 MD |
896 | return NULL; |
897 | } | |
898 | ||
899 | static | |
900 | int create_stream_definitions(struct ctf_trace *td, struct ctf_stream *stream) | |
901 | { | |
902 | struct ctf_stream_class *stream_class; | |
903 | int ret; | |
904 | int i; | |
905 | ||
906 | if (stream->stream_definitions_created) | |
907 | return 0; | |
908 | ||
909 | stream_class = stream->stream_class; | |
910 | ||
911 | if (stream_class->packet_context_decl) { | |
912 | struct definition *definition = | |
913 | stream_class->packet_context_decl->p.definition_new(&stream_class->packet_context_decl->p, | |
914 | stream->parent_def_scope, 0, 0, "stream.packet.context"); | |
915 | if (!definition) { | |
916 | ret = -EINVAL; | |
917 | goto error; | |
918 | } | |
919 | stream->stream_packet_context = container_of(definition, | |
920 | struct definition_struct, p); | |
921 | stream->parent_def_scope = stream->stream_packet_context->p.scope; | |
922 | } | |
923 | if (stream_class->event_header_decl) { | |
924 | struct definition *definition = | |
925 | stream_class->event_header_decl->p.definition_new(&stream_class->event_header_decl->p, | |
926 | stream->parent_def_scope, 0, 0, "stream.event.header"); | |
927 | if (!definition) { | |
928 | ret = -EINVAL; | |
929 | goto error; | |
930 | } | |
931 | stream->stream_event_header = | |
932 | container_of(definition, struct definition_struct, p); | |
933 | stream->parent_def_scope = stream->stream_event_header->p.scope; | |
934 | } | |
935 | if (stream_class->event_context_decl) { | |
936 | struct definition *definition = | |
937 | stream_class->event_context_decl->p.definition_new(&stream_class->event_context_decl->p, | |
938 | stream->parent_def_scope, 0, 0, "stream.event.context"); | |
939 | if (!definition) { | |
940 | ret = -EINVAL; | |
941 | goto error; | |
942 | } | |
943 | stream->stream_event_context = | |
944 | container_of(definition, struct definition_struct, p); | |
945 | stream->parent_def_scope = stream->stream_event_context->p.scope; | |
946 | } | |
947 | stream->events_by_id = g_ptr_array_new(); | |
948 | g_ptr_array_set_size(stream->events_by_id, stream_class->events_by_id->len); | |
949 | for (i = 0; i < stream->events_by_id->len; i++) { | |
950 | struct ctf_event *event = g_ptr_array_index(stream_class->events_by_id, i); | |
42dc00b7 | 951 | struct ctf_stream_event *stream_event; |
e28d4618 MD |
952 | |
953 | if (!event) | |
954 | continue; | |
42dc00b7 MD |
955 | stream_event = create_event_definitions(td, stream, event); |
956 | if (!stream_event) | |
e28d4618 | 957 | goto error_event; |
42dc00b7 | 958 | g_ptr_array_index(stream->events_by_id, i) = stream_event; |
e28d4618 MD |
959 | } |
960 | return 0; | |
961 | ||
962 | error_event: | |
963 | for (i = 0; i < stream->events_by_id->len; i++) { | |
42dc00b7 MD |
964 | struct ctf_stream_event *stream_event = g_ptr_array_index(stream->events_by_id, i); |
965 | if (stream_event) | |
966 | g_free(stream_event); | |
e28d4618 MD |
967 | } |
968 | g_ptr_array_free(stream->events_by_id, TRUE); | |
969 | error: | |
970 | if (stream->stream_event_context) | |
971 | definition_unref(&stream->stream_event_context->p); | |
972 | if (stream->stream_event_header) | |
973 | definition_unref(&stream->stream_event_header->p); | |
974 | if (stream->stream_packet_context) | |
975 | definition_unref(&stream->stream_packet_context->p); | |
976 | return ret; | |
977 | } | |
978 | ||
0f980a35 MD |
979 | |
980 | static | |
46322b33 | 981 | int create_stream_packet_index(struct ctf_trace *td, |
0f980a35 MD |
982 | struct ctf_file_stream *file_stream) |
983 | { | |
aa6bffae | 984 | struct ctf_stream_class *stream; |
0f980a35 | 985 | int len_index; |
46322b33 | 986 | struct ctf_stream_pos *pos; |
0f980a35 MD |
987 | struct stat filestats; |
988 | struct packet_index packet_index; | |
989 | int first_packet = 1; | |
990 | int ret; | |
991 | ||
992 | pos = &file_stream->pos; | |
993 | ||
994 | ret = fstat(pos->fd, &filestats); | |
995 | if (ret < 0) | |
996 | return ret; | |
997 | ||
8895362d MD |
998 | if (filestats.st_size < MAX_PACKET_HEADER_LEN / CHAR_BIT) |
999 | return -EINVAL; | |
1000 | ||
0f980a35 MD |
1001 | for (pos->mmap_offset = 0; pos->mmap_offset < filestats.st_size; ) { |
1002 | uint64_t stream_id = 0; | |
1003 | ||
1004 | if (pos->base) { | |
1005 | /* unmap old base */ | |
8c572eba | 1006 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); |
0f980a35 | 1007 | if (ret) { |
3394d22e | 1008 | fprintf(stderr, "[error] Unable to unmap old base: %s.\n", |
0f980a35 MD |
1009 | strerror(errno)); |
1010 | return ret; | |
1011 | } | |
8c572eba | 1012 | pos->base = NULL; |
0f980a35 MD |
1013 | } |
1014 | /* map new base. Need mapping length from header. */ | |
8c572eba | 1015 | pos->base = mmap(NULL, MAX_PACKET_HEADER_LEN / CHAR_BIT, PROT_READ, |
0f980a35 | 1016 | MAP_PRIVATE, pos->fd, pos->mmap_offset); |
dc48ecad MD |
1017 | pos->content_size = MAX_PACKET_HEADER_LEN; /* Unknown at this point */ |
1018 | pos->packet_size = MAX_PACKET_HEADER_LEN; /* Unknown at this point */ | |
0f980a35 MD |
1019 | pos->offset = 0; /* Position of the packet header */ |
1020 | ||
8c572eba MD |
1021 | packet_index.offset = pos->mmap_offset; |
1022 | packet_index.content_size = 0; | |
1023 | packet_index.packet_size = 0; | |
75cc2c35 MD |
1024 | packet_index.timestamp_begin = 0; |
1025 | packet_index.timestamp_end = 0; | |
41e82e00 | 1026 | packet_index.events_discarded = 0; |
8c572eba | 1027 | |
0f980a35 | 1028 | /* read and check header, set stream id (and check) */ |
2d0bea29 | 1029 | if (file_stream->parent.trace_packet_header) { |
0f980a35 | 1030 | /* Read packet header */ |
2d0bea29 | 1031 | ret = generic_rw(&pos->parent, &file_stream->parent.trace_packet_header->p); |
c5e74408 MD |
1032 | if (ret) |
1033 | return ret; | |
2d0bea29 | 1034 | len_index = struct_declaration_lookup_field_index(file_stream->parent.trace_packet_header->declaration, g_quark_from_static_string("magic")); |
0f980a35 | 1035 | if (len_index >= 0) { |
b1a2f580 | 1036 | struct definition *field; |
f4c56ac2 | 1037 | uint64_t magic; |
0f980a35 | 1038 | |
2d0bea29 | 1039 | field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); |
f4c56ac2 MD |
1040 | magic = get_unsigned_int(field); |
1041 | if (magic != CTF_MAGIC) { | |
3394d22e | 1042 | fprintf(stderr, "[error] Invalid magic number 0x%" PRIX64 " at packet %u (file offset %zd).\n", |
f4c56ac2 | 1043 | magic, |
8c572eba MD |
1044 | file_stream->pos.packet_index->len, |
1045 | (ssize_t) pos->mmap_offset); | |
0f980a35 MD |
1046 | return -EINVAL; |
1047 | } | |
1048 | } | |
1049 | ||
1050 | /* check uuid */ | |
2d0bea29 | 1051 | len_index = struct_declaration_lookup_field_index(file_stream->parent.trace_packet_header->declaration, g_quark_from_static_string("uuid")); |
0f980a35 MD |
1052 | if (len_index >= 0) { |
1053 | struct definition_array *defarray; | |
b1a2f580 | 1054 | struct definition *field; |
0f980a35 MD |
1055 | uint64_t i; |
1056 | uint8_t uuidval[UUID_LEN]; | |
1057 | ||
2d0bea29 | 1058 | field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); |
b1a2f580 MD |
1059 | assert(field->declaration->id == CTF_TYPE_ARRAY); |
1060 | defarray = container_of(field, struct definition_array, p); | |
3838df27 | 1061 | assert(array_len(defarray) == UUID_LEN); |
0f980a35 MD |
1062 | |
1063 | for (i = 0; i < UUID_LEN; i++) { | |
1064 | struct definition *elem; | |
0f980a35 MD |
1065 | |
1066 | elem = array_index(defarray, i); | |
f4c56ac2 | 1067 | uuidval[i] = get_unsigned_int(elem); |
0f980a35 | 1068 | } |
46322b33 | 1069 | ret = uuid_compare(td->uuid, uuidval); |
0f980a35 | 1070 | if (ret) { |
3394d22e | 1071 | fprintf(stderr, "[error] Unique Universal Identifiers do not match.\n"); |
0f980a35 MD |
1072 | return -EINVAL; |
1073 | } | |
1074 | } | |
1075 | ||
1076 | ||
2d0bea29 | 1077 | len_index = struct_declaration_lookup_field_index(file_stream->parent.trace_packet_header->declaration, g_quark_from_static_string("stream_id")); |
0f980a35 | 1078 | if (len_index >= 0) { |
b1a2f580 | 1079 | struct definition *field; |
0f980a35 | 1080 | |
2d0bea29 | 1081 | field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); |
f4c56ac2 | 1082 | stream_id = get_unsigned_int(field); |
0f980a35 MD |
1083 | } |
1084 | } | |
1085 | ||
2d0bea29 | 1086 | if (!first_packet && file_stream->parent.stream_id != stream_id) { |
3394d22e | 1087 | fprintf(stderr, "[error] Stream ID is changing within a stream.\n"); |
0f980a35 MD |
1088 | return -EINVAL; |
1089 | } | |
1090 | if (first_packet) { | |
2d0bea29 | 1091 | file_stream->parent.stream_id = stream_id; |
46322b33 | 1092 | if (stream_id >= td->streams->len) { |
3394d22e | 1093 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); |
0f980a35 MD |
1094 | return -EINVAL; |
1095 | } | |
46322b33 | 1096 | stream = g_ptr_array_index(td->streams, stream_id); |
0f980a35 | 1097 | if (!stream) { |
3394d22e | 1098 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); |
0f980a35 MD |
1099 | return -EINVAL; |
1100 | } | |
2d0bea29 | 1101 | file_stream->parent.stream_class = stream; |
01c76b24 | 1102 | ret = create_stream_definitions(td, &file_stream->parent); |
862434ec MD |
1103 | if (ret) |
1104 | return ret; | |
0f980a35 MD |
1105 | } |
1106 | first_packet = 0; | |
1107 | ||
2d0bea29 | 1108 | if (file_stream->parent.stream_packet_context) { |
dc48ecad | 1109 | /* Read packet context */ |
2d0bea29 | 1110 | ret = generic_rw(&pos->parent, &file_stream->parent.stream_packet_context->p); |
c5e74408 MD |
1111 | if (ret) |
1112 | return ret; | |
dc48ecad | 1113 | /* read content size from header */ |
2d0bea29 | 1114 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("content_size")); |
dc48ecad | 1115 | if (len_index >= 0) { |
b1a2f580 | 1116 | struct definition *field; |
dc48ecad | 1117 | |
2d0bea29 | 1118 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1119 | packet_index.content_size = get_unsigned_int(field); |
dc48ecad MD |
1120 | } else { |
1121 | /* Use file size for packet size */ | |
8c572eba | 1122 | packet_index.content_size = filestats.st_size * CHAR_BIT; |
dc48ecad MD |
1123 | } |
1124 | ||
1125 | /* read packet size from header */ | |
2d0bea29 | 1126 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("packet_size")); |
dc48ecad | 1127 | if (len_index >= 0) { |
b1a2f580 | 1128 | struct definition *field; |
dc48ecad | 1129 | |
2d0bea29 | 1130 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1131 | packet_index.packet_size = get_unsigned_int(field); |
dc48ecad MD |
1132 | } else { |
1133 | /* Use content size if non-zero, else file size */ | |
8c572eba | 1134 | packet_index.packet_size = packet_index.content_size ? : filestats.st_size * CHAR_BIT; |
dc48ecad | 1135 | } |
75cc2c35 MD |
1136 | |
1137 | /* read timestamp begin from header */ | |
2d0bea29 | 1138 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("timestamp_begin")); |
75cc2c35 | 1139 | if (len_index >= 0) { |
75cc2c35 MD |
1140 | struct definition *field; |
1141 | ||
2d0bea29 | 1142 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1143 | packet_index.timestamp_begin = get_unsigned_int(field); |
75cc2c35 MD |
1144 | } |
1145 | ||
1146 | /* read timestamp end from header */ | |
2d0bea29 | 1147 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("timestamp_end")); |
75cc2c35 | 1148 | if (len_index >= 0) { |
75cc2c35 MD |
1149 | struct definition *field; |
1150 | ||
2d0bea29 | 1151 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1152 | packet_index.timestamp_end = get_unsigned_int(field); |
75cc2c35 | 1153 | } |
41e82e00 MD |
1154 | |
1155 | /* read events discarded from header */ | |
1156 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("events_discarded")); | |
1157 | if (len_index >= 0) { | |
1158 | struct definition *field; | |
1159 | ||
1160 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); | |
1161 | packet_index.events_discarded = get_unsigned_int(field); | |
1162 | } | |
0f980a35 MD |
1163 | } else { |
1164 | /* Use file size for packet size */ | |
8c572eba | 1165 | packet_index.content_size = filestats.st_size * CHAR_BIT; |
0f980a35 | 1166 | /* Use content size if non-zero, else file size */ |
8c572eba | 1167 | packet_index.packet_size = packet_index.content_size ? : filestats.st_size * CHAR_BIT; |
0f980a35 | 1168 | } |
546293fa MD |
1169 | |
1170 | /* Validate content size and packet size values */ | |
1171 | if (packet_index.content_size > packet_index.packet_size) { | |
3394d22e | 1172 | fprintf(stderr, "[error] Content size (%zu bits) is larger than packet size (%zu bits).\n", |
546293fa MD |
1173 | packet_index.content_size, packet_index.packet_size); |
1174 | return -EINVAL; | |
1175 | } | |
1176 | ||
58b0b883 | 1177 | if (packet_index.packet_size > (filestats.st_size - packet_index.offset) * CHAR_BIT) { |
3394d22e | 1178 | fprintf(stderr, "[error] Packet size (%zu bits) is larger than remaining file size (%zu bits).\n", |
5aebb2ee | 1179 | packet_index.content_size, (size_t) (filestats.st_size - packet_index.offset) * CHAR_BIT); |
546293fa MD |
1180 | return -EINVAL; |
1181 | } | |
1182 | ||
847bf71a MD |
1183 | /* Save position after header and context */ |
1184 | packet_index.data_offset = pos->offset; | |
0f980a35 | 1185 | |
0f980a35 MD |
1186 | /* add index to packet array */ |
1187 | g_array_append_val(file_stream->pos.packet_index, packet_index); | |
1188 | ||
8c572eba | 1189 | pos->mmap_offset += packet_index.packet_size / CHAR_BIT; |
0f980a35 MD |
1190 | } |
1191 | ||
847bf71a MD |
1192 | /* Move pos back to beginning of file */ |
1193 | ctf_move_pos_slow(pos, 0, SEEK_SET); /* position for write */ | |
1194 | ||
0f980a35 MD |
1195 | return 0; |
1196 | } | |
1197 | ||
e28d4618 MD |
1198 | static |
1199 | int create_trace_definitions(struct ctf_trace *td, struct ctf_stream *stream) | |
1200 | { | |
1201 | int ret; | |
1202 | ||
1203 | if (td->packet_header_decl) { | |
1204 | struct definition *definition = | |
1205 | td->packet_header_decl->p.definition_new(&td->packet_header_decl->p, | |
1206 | stream->parent_def_scope, 0, 0, "trace.packet.header"); | |
1207 | if (!definition) { | |
1208 | ret = -EINVAL; | |
1209 | goto error; | |
1210 | } | |
1211 | stream->trace_packet_header = | |
1212 | container_of(definition, struct definition_struct, p); | |
1213 | stream->parent_def_scope = stream->trace_packet_header->p.scope; | |
1214 | } | |
1215 | ||
1216 | return 0; | |
1217 | ||
1218 | error: | |
1219 | return ret; | |
1220 | } | |
1221 | ||
0f980a35 MD |
1222 | /* |
1223 | * Note: many file streams can inherit from the same stream class | |
1224 | * description (metadata). | |
1225 | */ | |
1226 | static | |
b086c01a JD |
1227 | int ctf_open_file_stream_read(struct ctf_trace *td, const char *path, int flags, |
1228 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, | |
1229 | int whence)) | |
0f980a35 MD |
1230 | { |
1231 | int ret; | |
1232 | struct ctf_file_stream *file_stream; | |
1233 | ||
46322b33 | 1234 | ret = openat(td->dirfd, path, flags); |
a569a564 MD |
1235 | if (ret < 0) { |
1236 | perror("File stream openat()"); | |
0f980a35 | 1237 | goto error; |
a569a564 | 1238 | } |
0f980a35 | 1239 | file_stream = g_new0(struct ctf_file_stream, 1); |
b086c01a JD |
1240 | |
1241 | if (move_pos_slow) { | |
1242 | file_stream->pos.move_pos_slow = move_pos_slow; | |
1243 | } else { | |
1244 | fprintf(stderr, "[error] move_pos_slow function undefined.\n"); | |
1245 | ret = -1; | |
1246 | goto error_def; | |
1247 | } | |
1248 | ||
8563e754 | 1249 | ctf_init_pos(&file_stream->pos, ret, flags); |
2d0bea29 | 1250 | ret = create_trace_definitions(td, &file_stream->parent); |
e28d4618 MD |
1251 | if (ret) |
1252 | goto error_def; | |
0f980a35 MD |
1253 | ret = create_stream_packet_index(td, file_stream); |
1254 | if (ret) | |
1255 | goto error_index; | |
1256 | /* Add stream file to stream class */ | |
2d0bea29 MD |
1257 | g_ptr_array_add(file_stream->parent.stream_class->streams, |
1258 | &file_stream->parent); | |
0f980a35 MD |
1259 | return 0; |
1260 | ||
1261 | error_index: | |
2d0bea29 MD |
1262 | if (file_stream->parent.trace_packet_header) |
1263 | definition_unref(&file_stream->parent.trace_packet_header->p); | |
e28d4618 | 1264 | error_def: |
46322b33 | 1265 | ctf_fini_pos(&file_stream->pos); |
0f980a35 MD |
1266 | close(file_stream->pos.fd); |
1267 | g_free(file_stream); | |
1268 | error: | |
65102a8c MD |
1269 | return ret; |
1270 | } | |
1271 | ||
8c250d87 MD |
1272 | static void |
1273 | init_domain_name(struct ctf_trace *td) | |
1274 | { | |
1275 | char *start, *end; | |
1276 | ||
1277 | start = td->path + strlen(td->collection_path); | |
e38f07e9 MD |
1278 | while (start[0] == '/') |
1279 | start++; /* skip / */ | |
8c250d87 MD |
1280 | end = strchr(start, '/'); |
1281 | if (!end) | |
e38f07e9 | 1282 | end = start + strlen(start); |
8c250d87 MD |
1283 | memcpy(td->domain, start, end - start); |
1284 | td->domain[end - start] = '\0'; | |
1285 | } | |
1286 | ||
1287 | static void | |
1288 | init_proc_name(struct ctf_trace *td) | |
1289 | { | |
1290 | char buf[PATH_MAX]; | |
1291 | char *start, *end; | |
1292 | ||
1293 | if (td->domain[0] == '\0') | |
1294 | return; | |
1295 | memcpy(buf, td->path, PATH_MAX); | |
1296 | start = buf + strlen(td->collection_path); | |
e38f07e9 MD |
1297 | while (start[0] == '/') |
1298 | start++; /* skip / */ | |
8c250d87 MD |
1299 | start = strchr(start, '/'); /* get begin of domain content */ |
1300 | if (!start) | |
1301 | return; | |
e38f07e9 MD |
1302 | while (start[0] == '/') |
1303 | start++; /* skip / */ | |
8c250d87 MD |
1304 | /* find last -, skips time */ |
1305 | end = strrchr(start, '-'); | |
1306 | if (!end) | |
1307 | return; | |
1308 | *end = '\0'; | |
1309 | /* find previous -, skips date */ | |
1310 | end = strrchr(start, '-'); | |
1311 | if (!end) | |
1312 | return; | |
1313 | *end = '\0'; | |
1314 | /* find previous -, skips pid */ | |
1315 | end = strrchr(start, '-'); | |
1316 | if (!end) | |
1317 | return; | |
1318 | *end = '\0'; | |
1319 | ||
1320 | memcpy(td->procname, start, end - start); | |
1321 | td->procname[end - start] = '\0'; | |
1322 | } | |
1323 | ||
1324 | static void | |
1325 | init_vpid(struct ctf_trace *td) | |
1326 | { | |
1327 | char buf[PATH_MAX]; | |
1328 | char *start, *end; | |
1329 | ||
1330 | if (td->domain[0] == '\0') | |
1331 | return; | |
1332 | memcpy(buf, td->path, PATH_MAX); | |
1333 | start = buf + strlen(td->collection_path); | |
e38f07e9 MD |
1334 | while (start[0] == '/') |
1335 | start++; /* skip / */ | |
8c250d87 MD |
1336 | start = strchr(start, '/'); /* get begin of domain content */ |
1337 | if (!start) | |
1338 | return; | |
e38f07e9 MD |
1339 | while (start[0] == '/') |
1340 | start++; /* skip / */ | |
8c250d87 MD |
1341 | /* find last -, skips time */ |
1342 | end = strrchr(start, '-'); | |
1343 | if (!end) | |
1344 | return; | |
1345 | *end = '\0'; | |
1346 | /* find previous -, skips date */ | |
1347 | end = strrchr(start, '-'); | |
1348 | if (!end) | |
1349 | return; | |
1350 | *end = '\0'; | |
1351 | /* find previous -, skips pid */ | |
1352 | start = strrchr(start, '-'); | |
1353 | if (!start) | |
1354 | return; | |
1355 | start++; /* skip - */ | |
1356 | ||
1357 | memcpy(td->vpid, start, end - start); | |
1358 | td->vpid[end - start] = '\0'; | |
1359 | } | |
1360 | ||
bbefb8dd | 1361 | static |
8c250d87 MD |
1362 | int ctf_open_trace_read(struct ctf_trace *td, const char *collection_path, |
1363 | const char *path, int flags, | |
b086c01a | 1364 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, |
ae23d232 | 1365 | int whence), FILE *metadata_fp) |
bbefb8dd MD |
1366 | { |
1367 | int ret; | |
65102a8c MD |
1368 | struct dirent *dirent; |
1369 | struct dirent *diriter; | |
1370 | size_t dirent_len; | |
48c3d8f9 | 1371 | char *respath, *rescolpath; |
bbefb8dd | 1372 | |
46322b33 | 1373 | td->flags = flags; |
bbefb8dd MD |
1374 | |
1375 | /* Open trace directory */ | |
46322b33 MD |
1376 | td->dir = opendir(path); |
1377 | if (!td->dir) { | |
3394d22e | 1378 | fprintf(stderr, "[error] Unable to open trace directory.\n"); |
bbefb8dd MD |
1379 | ret = -ENOENT; |
1380 | goto error; | |
1381 | } | |
1382 | ||
46322b33 MD |
1383 | td->dirfd = open(path, 0); |
1384 | if (td->dirfd < 0) { | |
3394d22e | 1385 | fprintf(stderr, "[error] Unable to open trace directory file descriptor.\n"); |
a569a564 MD |
1386 | perror("Trace directory open"); |
1387 | ret = -errno; | |
65102a8c MD |
1388 | goto error_dirfd; |
1389 | } | |
48c3d8f9 MD |
1390 | rescolpath = realpath(collection_path, td->collection_path); |
1391 | if (!rescolpath) { | |
3394d22e | 1392 | fprintf(stderr, "[error] collection path resolution failure\n"); |
48c3d8f9 MD |
1393 | return -EINVAL; |
1394 | } | |
1395 | respath = realpath(path, td->path); | |
9db125c8 | 1396 | if (!respath) { |
3394d22e | 1397 | fprintf(stderr, "[error] path resolution failure\n"); |
4ede433e MD |
1398 | return -EINVAL; |
1399 | } | |
8c250d87 MD |
1400 | init_domain_name(td); |
1401 | init_proc_name(td); | |
1402 | init_vpid(td); | |
0f980a35 | 1403 | |
65102a8c MD |
1404 | /* |
1405 | * Keep the metadata file separate. | |
1406 | */ | |
bbefb8dd | 1407 | |
ae23d232 | 1408 | ret = ctf_open_trace_metadata_read(td, move_pos_slow, metadata_fp); |
65102a8c MD |
1409 | if (ret) { |
1410 | goto error_metadata; | |
1411 | } | |
bbefb8dd MD |
1412 | |
1413 | /* | |
1414 | * Open each stream: for each file, try to open, check magic | |
1415 | * number, and get the stream ID to add to the right location in | |
1416 | * the stream array. | |
bbefb8dd MD |
1417 | */ |
1418 | ||
65102a8c | 1419 | dirent_len = offsetof(struct dirent, d_name) + |
46322b33 | 1420 | fpathconf(td->dirfd, _PC_NAME_MAX) + 1; |
bbefb8dd | 1421 | |
65102a8c | 1422 | dirent = malloc(dirent_len); |
bbefb8dd | 1423 | |
65102a8c | 1424 | for (;;) { |
46322b33 | 1425 | ret = readdir_r(td->dir, dirent, &diriter); |
65102a8c | 1426 | if (ret) { |
3394d22e | 1427 | fprintf(stderr, "[error] Readdir error.\n"); |
65102a8c | 1428 | goto readdir_error; |
65102a8c MD |
1429 | } |
1430 | if (!diriter) | |
1431 | break; | |
d8ea2d29 MD |
1432 | /* Ignore hidden files, ., .. and metadata. */ |
1433 | if (!strncmp(diriter->d_name, ".", 1) | |
65102a8c MD |
1434 | || !strcmp(diriter->d_name, "..") |
1435 | || !strcmp(diriter->d_name, "metadata")) | |
1436 | continue; | |
b086c01a | 1437 | ret = ctf_open_file_stream_read(td, diriter->d_name, flags, move_pos_slow); |
dc48ecad | 1438 | if (ret) { |
3394d22e | 1439 | fprintf(stderr, "[error] Open file stream error.\n"); |
dc48ecad MD |
1440 | goto readdir_error; |
1441 | } | |
65102a8c | 1442 | } |
bbefb8dd | 1443 | |
65102a8c | 1444 | free(dirent); |
bbefb8dd | 1445 | return 0; |
65102a8c MD |
1446 | |
1447 | readdir_error: | |
1448 | free(dirent); | |
1449 | error_metadata: | |
46322b33 | 1450 | close(td->dirfd); |
65102a8c | 1451 | error_dirfd: |
46322b33 | 1452 | closedir(td->dir); |
bbefb8dd MD |
1453 | error: |
1454 | return ret; | |
1455 | } | |
1456 | ||
e9378815 | 1457 | static |
8c250d87 | 1458 | struct trace_descriptor *ctf_open_trace(const char *collection_path, const char *path, int flags, |
b086c01a | 1459 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, |
ae23d232 | 1460 | int whence), FILE *metadata_fp) |
bbefb8dd | 1461 | { |
46322b33 | 1462 | struct ctf_trace *td; |
bbefb8dd MD |
1463 | int ret; |
1464 | ||
46322b33 | 1465 | td = g_new0(struct ctf_trace, 1); |
bbefb8dd | 1466 | |
8c572eba | 1467 | switch (flags & O_ACCMODE) { |
bbefb8dd | 1468 | case O_RDONLY: |
b61922b5 | 1469 | if (!path) { |
3394d22e | 1470 | fprintf(stderr, "[error] Path missing for input CTF trace.\n"); |
b61922b5 MD |
1471 | goto error; |
1472 | } | |
8c250d87 | 1473 | ret = ctf_open_trace_read(td, collection_path, path, flags, move_pos_slow, metadata_fp); |
bbefb8dd MD |
1474 | if (ret) |
1475 | goto error; | |
1476 | break; | |
989c73bc | 1477 | case O_RDWR: |
3394d22e | 1478 | fprintf(stderr, "[error] Opening CTF traces for output is not supported yet.\n"); |
46322b33 | 1479 | goto error; |
bbefb8dd | 1480 | default: |
3394d22e | 1481 | fprintf(stderr, "[error] Incorrect open flags.\n"); |
bbefb8dd MD |
1482 | goto error; |
1483 | } | |
1484 | ||
46322b33 | 1485 | return &td->parent; |
bbefb8dd MD |
1486 | error: |
1487 | g_free(td); | |
1488 | return NULL; | |
1489 | } | |
1490 | ||
f571dfb1 JD |
1491 | |
1492 | void ctf_init_mmap_pos(struct ctf_stream_pos *pos, | |
1493 | struct mmap_stream *mmap_info) | |
1494 | { | |
1495 | pos->mmap_offset = 0; | |
1496 | pos->packet_size = 0; | |
1497 | pos->content_size = 0; | |
1498 | pos->content_size_loc = NULL; | |
1499 | pos->fd = mmap_info->fd; | |
1500 | pos->base = 0; | |
1501 | pos->offset = 0; | |
1502 | pos->dummy = false; | |
1503 | pos->cur_index = 0; | |
1504 | pos->packet_index = NULL; | |
1505 | pos->prot = PROT_READ; | |
1506 | pos->flags = MAP_PRIVATE; | |
1507 | pos->parent.rw_table = read_dispatch_table; | |
1508 | pos->parent.event_cb = ctf_read_event; | |
1509 | } | |
1510 | ||
1511 | static | |
1512 | int prepare_mmap_stream_definition(struct ctf_trace *td, | |
1513 | struct ctf_file_stream *file_stream) | |
1514 | { | |
1515 | struct ctf_stream_class *stream; | |
1516 | uint64_t stream_id = 0; | |
1517 | int ret; | |
1518 | ||
1519 | file_stream->parent.stream_id = stream_id; | |
1520 | if (stream_id >= td->streams->len) { | |
3394d22e | 1521 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared " |
f571dfb1 JD |
1522 | "in metadata.\n", stream_id); |
1523 | ret = -EINVAL; | |
1524 | goto end; | |
1525 | } | |
1526 | stream = g_ptr_array_index(td->streams, stream_id); | |
1527 | if (!stream) { | |
3394d22e | 1528 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared " |
f571dfb1 JD |
1529 | "in metadata.\n", stream_id); |
1530 | ret = -EINVAL; | |
1531 | goto end; | |
1532 | } | |
1533 | file_stream->parent.stream_class = stream; | |
1534 | ret = create_stream_definitions(td, &file_stream->parent); | |
1535 | end: | |
1536 | return ret; | |
1537 | } | |
1538 | ||
1539 | static | |
1540 | int ctf_open_mmap_stream_read(struct ctf_trace *td, | |
1541 | struct mmap_stream *mmap_info, | |
1542 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, | |
1543 | int whence)) | |
1544 | { | |
1545 | int ret; | |
1546 | struct ctf_file_stream *file_stream; | |
1547 | ||
1548 | file_stream = g_new0(struct ctf_file_stream, 1); | |
1549 | ctf_init_mmap_pos(&file_stream->pos, mmap_info); | |
1550 | ||
1551 | file_stream->pos.move_pos_slow = move_pos_slow; | |
1552 | ||
1553 | ret = create_trace_definitions(td, &file_stream->parent); | |
1554 | if (ret) { | |
1555 | goto error_def; | |
1556 | } | |
1557 | ||
1558 | ret = prepare_mmap_stream_definition(td, file_stream); | |
1559 | if (ret) | |
1560 | goto error_index; | |
1561 | ||
1562 | /* Add stream file to stream class */ | |
1563 | g_ptr_array_add(file_stream->parent.stream_class->streams, | |
1564 | &file_stream->parent); | |
1565 | return 0; | |
1566 | ||
1567 | error_index: | |
1568 | if (file_stream->parent.trace_packet_header) | |
1569 | definition_unref(&file_stream->parent.trace_packet_header->p); | |
1570 | error_def: | |
1571 | g_free(file_stream); | |
1572 | return ret; | |
1573 | } | |
1574 | ||
1575 | int ctf_open_mmap_trace_read(struct ctf_trace *td, | |
1576 | struct mmap_stream_list *mmap_list, | |
1577 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, | |
1578 | int whence), | |
1579 | FILE *metadata_fp) | |
1580 | { | |
1581 | int ret; | |
1582 | struct mmap_stream *mmap_info; | |
1583 | ||
1584 | ret = ctf_open_trace_metadata_read(td, ctf_move_pos_slow, metadata_fp); | |
1585 | if (ret) { | |
1586 | goto error; | |
1587 | } | |
1588 | ||
1589 | /* | |
1590 | * for each stream, try to open, check magic number, and get the | |
1591 | * stream ID to add to the right location in the stream array. | |
1592 | */ | |
1593 | cds_list_for_each_entry(mmap_info, &mmap_list->head, list) { | |
1594 | ret = ctf_open_mmap_stream_read(td, mmap_info, move_pos_slow); | |
1595 | if (ret) { | |
3394d22e | 1596 | fprintf(stderr, "[error] Open file mmap stream error.\n"); |
f571dfb1 JD |
1597 | goto error; |
1598 | } | |
1599 | } | |
1600 | ||
1601 | return 0; | |
1602 | ||
1603 | error: | |
1604 | return ret; | |
1605 | } | |
1606 | ||
1607 | static | |
1608 | struct trace_descriptor *ctf_open_mmap_trace( | |
1609 | struct mmap_stream_list *mmap_list, | |
1610 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, int whence), | |
1611 | FILE *metadata_fp) | |
1612 | { | |
1613 | struct ctf_trace *td; | |
1614 | int ret; | |
1615 | ||
1616 | if (!metadata_fp) { | |
1617 | fprintf(stderr, "[error] No metadata file pointer associated, " | |
1618 | "required for mmap parsing\n"); | |
1619 | goto error; | |
1620 | } | |
1621 | if (!move_pos_slow) { | |
1622 | fprintf(stderr, "[error] move_pos_slow function undefined.\n"); | |
1623 | goto error; | |
1624 | } | |
1625 | td = g_new0(struct ctf_trace, 1); | |
1626 | ret = ctf_open_mmap_trace_read(td, mmap_list, move_pos_slow, metadata_fp); | |
1627 | if (ret) | |
1628 | goto error_free; | |
1629 | ||
1630 | return &td->parent; | |
1631 | ||
1632 | error_free: | |
1633 | g_free(td); | |
1634 | error: | |
1635 | return NULL; | |
1636 | } | |
1637 | ||
0f980a35 MD |
1638 | static |
1639 | void ctf_close_file_stream(struct ctf_file_stream *file_stream) | |
1640 | { | |
46322b33 | 1641 | ctf_fini_pos(&file_stream->pos); |
0f980a35 MD |
1642 | close(file_stream->pos.fd); |
1643 | } | |
1644 | ||
e9378815 | 1645 | static |
46322b33 | 1646 | void ctf_close_trace(struct trace_descriptor *tdp) |
bbefb8dd | 1647 | { |
46322b33 | 1648 | struct ctf_trace *td = container_of(tdp, struct ctf_trace, parent); |
0f980a35 MD |
1649 | int i; |
1650 | ||
46322b33 MD |
1651 | if (td->streams) { |
1652 | for (i = 0; i < td->streams->len; i++) { | |
aa6bffae | 1653 | struct ctf_stream_class *stream; |
0f980a35 | 1654 | int j; |
e9378815 | 1655 | |
46322b33 | 1656 | stream = g_ptr_array_index(td->streams, i); |
e9378815 MD |
1657 | if (!stream) |
1658 | continue; | |
2d0bea29 | 1659 | for (j = 0; j < stream->streams->len; j++) { |
0f980a35 | 1660 | struct ctf_file_stream *file_stream; |
2d0bea29 | 1661 | file_stream = container_of(g_ptr_array_index(stream->streams, j), struct ctf_file_stream, parent); |
0f980a35 MD |
1662 | ctf_close_file_stream(file_stream); |
1663 | } | |
1664 | ||
1665 | } | |
46322b33 | 1666 | g_ptr_array_free(td->streams, TRUE); |
0f980a35 | 1667 | } |
46322b33 | 1668 | closedir(td->dir); |
bbefb8dd MD |
1669 | g_free(td); |
1670 | } | |
1671 | ||
7fb21036 | 1672 | void __attribute__((constructor)) ctf_init(void) |
fc93b2bd MD |
1673 | { |
1674 | int ret; | |
1675 | ||
4c8bfb7e | 1676 | ctf_format.name = g_quark_from_static_string("ctf"); |
fc93b2bd MD |
1677 | ret = bt_register_format(&ctf_format); |
1678 | assert(!ret); | |
1679 | } | |
698f0fe4 MD |
1680 | |
1681 | /* TODO: finalize */ |