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 | ||
65102a8c | 55 | extern int yydebug; |
bbefb8dd | 56 | |
e9378815 | 57 | static |
8c250d87 | 58 | struct trace_descriptor *ctf_open_trace(const char *collection_path, const char *path, int flags, |
b086c01a | 59 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, |
ae23d232 | 60 | int whence), FILE *metadata_fp); |
e9378815 | 61 | static |
f571dfb1 JD |
62 | struct trace_descriptor *ctf_open_mmap_trace( |
63 | struct mmap_stream_list *mmap_list, | |
64 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, int whence), | |
65 | FILE *metadata_fp); | |
66 | ||
67 | static | |
bbefb8dd | 68 | void ctf_close_trace(struct trace_descriptor *descriptor); |
fc93b2bd | 69 | |
1ae19169 MD |
70 | static |
71 | rw_dispatch read_dispatch_table[] = { | |
d11e9c49 MD |
72 | [ CTF_TYPE_INTEGER ] = ctf_integer_read, |
73 | [ CTF_TYPE_FLOAT ] = ctf_float_read, | |
74 | [ CTF_TYPE_ENUM ] = ctf_enum_read, | |
75 | [ CTF_TYPE_STRING ] = ctf_string_read, | |
76 | [ CTF_TYPE_STRUCT ] = ctf_struct_rw, | |
77 | [ CTF_TYPE_VARIANT ] = ctf_variant_rw, | |
81dee1bb MD |
78 | [ CTF_TYPE_ARRAY ] = ctf_array_read, |
79 | [ CTF_TYPE_SEQUENCE ] = ctf_sequence_read, | |
d11e9c49 MD |
80 | }; |
81 | ||
1ae19169 MD |
82 | static |
83 | rw_dispatch write_dispatch_table[] = { | |
d11e9c49 MD |
84 | [ CTF_TYPE_INTEGER ] = ctf_integer_write, |
85 | [ CTF_TYPE_FLOAT ] = ctf_float_write, | |
86 | [ CTF_TYPE_ENUM ] = ctf_enum_write, | |
87 | [ CTF_TYPE_STRING ] = ctf_string_write, | |
88 | [ CTF_TYPE_STRUCT ] = ctf_struct_rw, | |
89 | [ CTF_TYPE_VARIANT ] = ctf_variant_rw, | |
81dee1bb MD |
90 | [ CTF_TYPE_ARRAY ] = ctf_array_write, |
91 | [ CTF_TYPE_SEQUENCE ] = ctf_sequence_write, | |
d11e9c49 MD |
92 | }; |
93 | ||
1ae19169 | 94 | static |
d11e9c49 | 95 | struct format ctf_format = { |
bbefb8dd | 96 | .open_trace = ctf_open_trace, |
f571dfb1 | 97 | .open_mmap_trace = ctf_open_mmap_trace, |
bbefb8dd | 98 | .close_trace = ctf_close_trace, |
fc93b2bd MD |
99 | }; |
100 | ||
2b9a764d MD |
101 | static |
102 | void ctf_update_timestamp(struct ctf_stream *stream, | |
103 | struct definition_integer *integer_definition) | |
104 | { | |
105 | struct declaration_integer *integer_declaration = | |
106 | integer_definition->declaration; | |
107 | uint64_t oldval, newval, updateval; | |
108 | ||
7f3f572b | 109 | if (unlikely(integer_declaration->len == 64)) { |
2b9a764d MD |
110 | stream->timestamp = integer_definition->value._unsigned; |
111 | return; | |
112 | } | |
113 | /* keep low bits */ | |
114 | oldval = stream->timestamp; | |
115 | oldval &= (1ULL << integer_declaration->len) - 1; | |
116 | newval = integer_definition->value._unsigned; | |
117 | /* Test for overflow by comparing low bits */ | |
118 | if (newval < oldval) | |
119 | newval += 1ULL << integer_declaration->len; | |
120 | /* updateval contains old high bits, and new low bits (sum) */ | |
121 | updateval = stream->timestamp; | |
122 | updateval &= ~((1ULL << integer_declaration->len) - 1); | |
123 | updateval += newval; | |
fca04958 | 124 | stream->prev_timestamp = stream->timestamp; |
2b9a764d MD |
125 | stream->timestamp = updateval; |
126 | } | |
127 | ||
31262354 | 128 | static |
764af3f4 | 129 | int ctf_read_event(struct stream_pos *ppos, struct ctf_stream *stream) |
31262354 MD |
130 | { |
131 | struct ctf_stream_pos *pos = | |
132 | container_of(ppos, struct ctf_stream_pos, parent); | |
764af3f4 | 133 | struct ctf_stream_class *stream_class = stream->stream_class; |
42dc00b7 | 134 | struct ctf_stream_event *event; |
31262354 | 135 | uint64_t id = 0; |
31262354 MD |
136 | int ret; |
137 | ||
3abe83c7 MD |
138 | /* We need to check for EOF here for empty files. */ |
139 | if (unlikely(pos->offset == EOF)) | |
140 | return EOF; | |
141 | ||
5f643ed7 MD |
142 | ctf_pos_get_event(pos); |
143 | ||
3abe83c7 MD |
144 | /* |
145 | * This is the EOF check after we've advanced the position in | |
146 | * ctf_pos_get_event. | |
147 | */ | |
7f3f572b | 148 | if (unlikely(pos->offset == EOF)) |
31262354 | 149 | return EOF; |
5f643ed7 | 150 | assert(pos->offset < pos->content_size); |
31262354 MD |
151 | |
152 | /* Read event header */ | |
7f3f572b | 153 | if (likely(stream->stream_event_header)) { |
a35173fe | 154 | struct definition_integer *integer_definition; |
ccdb988e | 155 | struct definition *variant; |
a35173fe | 156 | |
e28d4618 | 157 | ret = generic_rw(ppos, &stream->stream_event_header->p); |
7f3f572b | 158 | if (unlikely(ret)) |
31262354 MD |
159 | goto error; |
160 | /* lookup event id */ | |
e28d4618 | 161 | integer_definition = lookup_integer(&stream->stream_event_header->p, "id", FALSE); |
a35173fe MD |
162 | if (integer_definition) { |
163 | id = integer_definition->value._unsigned; | |
164 | } else { | |
165 | struct definition_enum *enum_definition; | |
166 | ||
e28d4618 | 167 | enum_definition = lookup_enum(&stream->stream_event_header->p, "id", FALSE); |
a35173fe MD |
168 | if (enum_definition) { |
169 | id = enum_definition->integer->value._unsigned; | |
170 | } | |
31262354 | 171 | } |
764af3f4 | 172 | |
e28d4618 | 173 | variant = lookup_variant(&stream->stream_event_header->p, "v"); |
ccdb988e MD |
174 | if (variant) { |
175 | integer_definition = lookup_integer(variant, "id", FALSE); | |
176 | if (integer_definition) { | |
177 | id = integer_definition->value._unsigned; | |
178 | } | |
179 | } | |
c87a8eb2 | 180 | stream->event_id = id; |
ccdb988e | 181 | |
764af3f4 | 182 | /* lookup timestamp */ |
5e2eb0ae | 183 | stream->has_timestamp = 0; |
e28d4618 | 184 | integer_definition = lookup_integer(&stream->stream_event_header->p, "timestamp", FALSE); |
a35173fe | 185 | if (integer_definition) { |
2b9a764d | 186 | ctf_update_timestamp(stream, integer_definition); |
5e2eb0ae | 187 | stream->has_timestamp = 1; |
a35173fe | 188 | } else { |
ccdb988e MD |
189 | if (variant) { |
190 | integer_definition = lookup_integer(variant, "timestamp", FALSE); | |
a35173fe | 191 | if (integer_definition) { |
2b9a764d | 192 | ctf_update_timestamp(stream, integer_definition); |
5e2eb0ae | 193 | stream->has_timestamp = 1; |
a35173fe MD |
194 | } |
195 | } | |
764af3f4 | 196 | } |
31262354 MD |
197 | } |
198 | ||
199 | /* Read stream-declared event context */ | |
e28d4618 MD |
200 | if (stream->stream_event_context) { |
201 | ret = generic_rw(ppos, &stream->stream_event_context->p); | |
31262354 MD |
202 | if (ret) |
203 | goto error; | |
204 | } | |
205 | ||
7f3f572b | 206 | if (unlikely(id >= stream_class->events_by_id->len)) { |
3394d22e | 207 | fprintf(stderr, "[error] Event id %" PRIu64 " is outside range.\n", id); |
31262354 MD |
208 | return -EINVAL; |
209 | } | |
e28d4618 | 210 | event = g_ptr_array_index(stream->events_by_id, id); |
7f3f572b | 211 | if (unlikely(!event)) { |
3394d22e | 212 | fprintf(stderr, "[error] Event id %" PRIu64 " is unknown.\n", id); |
31262354 MD |
213 | return -EINVAL; |
214 | } | |
215 | ||
216 | /* Read event-declared event context */ | |
e28d4618 MD |
217 | if (event->event_context) { |
218 | ret = generic_rw(ppos, &event->event_context->p); | |
31262354 MD |
219 | if (ret) |
220 | goto error; | |
221 | } | |
222 | ||
223 | /* Read event payload */ | |
7f3f572b | 224 | if (likely(event->event_fields)) { |
e28d4618 | 225 | ret = generic_rw(ppos, &event->event_fields->p); |
31262354 MD |
226 | if (ret) |
227 | goto error; | |
228 | } | |
229 | ||
230 | return 0; | |
231 | ||
232 | error: | |
3394d22e | 233 | 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 |
234 | return ret; |
235 | } | |
236 | ||
237 | static | |
764af3f4 | 238 | int ctf_write_event(struct stream_pos *pos, struct ctf_stream *stream) |
31262354 | 239 | { |
764af3f4 | 240 | struct ctf_stream_class *stream_class = stream->stream_class; |
42dc00b7 | 241 | struct ctf_stream_event *event; |
c87a8eb2 | 242 | uint64_t id; |
31262354 MD |
243 | int ret; |
244 | ||
c87a8eb2 MD |
245 | id = stream->event_id; |
246 | ||
31262354 | 247 | /* print event header */ |
7f3f572b | 248 | if (likely(stream->stream_event_header)) { |
e28d4618 | 249 | ret = generic_rw(pos, &stream->stream_event_header->p); |
31262354 MD |
250 | if (ret) |
251 | goto error; | |
252 | } | |
253 | ||
254 | /* print stream-declared event context */ | |
e28d4618 MD |
255 | if (stream->stream_event_context) { |
256 | ret = generic_rw(pos, &stream->stream_event_context->p); | |
31262354 MD |
257 | if (ret) |
258 | goto error; | |
259 | } | |
260 | ||
7f3f572b | 261 | if (unlikely(id >= stream_class->events_by_id->len)) { |
3394d22e | 262 | fprintf(stderr, "[error] Event id %" PRIu64 " is outside range.\n", id); |
31262354 MD |
263 | return -EINVAL; |
264 | } | |
e28d4618 | 265 | event = g_ptr_array_index(stream->events_by_id, id); |
7f3f572b | 266 | if (unlikely(!event)) { |
3394d22e | 267 | fprintf(stderr, "[error] Event id %" PRIu64 " is unknown.\n", id); |
31262354 MD |
268 | return -EINVAL; |
269 | } | |
270 | ||
271 | /* print event-declared event context */ | |
e28d4618 MD |
272 | if (event->event_context) { |
273 | ret = generic_rw(pos, &event->event_context->p); | |
31262354 MD |
274 | if (ret) |
275 | goto error; | |
276 | } | |
277 | ||
278 | /* Read and print event payload */ | |
7f3f572b | 279 | if (likely(event->event_fields)) { |
e28d4618 | 280 | ret = generic_rw(pos, &event->event_fields->p); |
31262354 MD |
281 | if (ret) |
282 | goto error; | |
283 | } | |
284 | ||
285 | return 0; | |
286 | ||
287 | error: | |
3394d22e | 288 | 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 |
289 | return ret; |
290 | } | |
291 | ||
8563e754 | 292 | void ctf_init_pos(struct ctf_stream_pos *pos, int fd, int open_flags) |
8c572eba MD |
293 | { |
294 | pos->fd = fd; | |
295 | pos->mmap_offset = 0; | |
296 | pos->packet_size = 0; | |
297 | pos->content_size = 0; | |
298 | pos->content_size_loc = NULL; | |
299 | pos->base = NULL; | |
300 | pos->offset = 0; | |
301 | pos->dummy = false; | |
8c572eba | 302 | pos->cur_index = 0; |
8563e754 MD |
303 | if (fd >= 0) |
304 | pos->packet_index = g_array_new(FALSE, TRUE, | |
305 | sizeof(struct packet_index)); | |
306 | else | |
307 | pos->packet_index = NULL; | |
8563e754 MD |
308 | switch (open_flags & O_ACCMODE) { |
309 | case O_RDONLY: | |
310 | pos->prot = PROT_READ; | |
311 | pos->flags = MAP_PRIVATE; | |
312 | pos->parent.rw_table = read_dispatch_table; | |
31262354 | 313 | pos->parent.event_cb = ctf_read_event; |
8563e754 | 314 | break; |
8563e754 MD |
315 | case O_RDWR: |
316 | pos->prot = PROT_WRITE; /* Write has priority */ | |
317 | pos->flags = MAP_SHARED; | |
318 | pos->parent.rw_table = write_dispatch_table; | |
31262354 | 319 | pos->parent.event_cb = ctf_write_event; |
8563e754 | 320 | if (fd >= 0) |
847bf71a | 321 | ctf_move_pos_slow(pos, 0, SEEK_SET); /* position for write */ |
8563e754 MD |
322 | break; |
323 | default: | |
324 | assert(0); | |
8c572eba MD |
325 | } |
326 | } | |
327 | ||
46322b33 | 328 | void ctf_fini_pos(struct ctf_stream_pos *pos) |
8c572eba MD |
329 | { |
330 | int ret; | |
331 | ||
332 | if (pos->prot == PROT_WRITE && pos->content_size_loc) | |
333 | *pos->content_size_loc = pos->offset; | |
334 | if (pos->base) { | |
335 | /* unmap old base */ | |
336 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); | |
337 | if (ret) { | |
3394d22e | 338 | fprintf(stderr, "[error] Unable to unmap old base: %s.\n", |
8c572eba MD |
339 | strerror(errno)); |
340 | assert(0); | |
341 | } | |
342 | } | |
343 | (void) g_array_free(pos->packet_index, TRUE); | |
344 | } | |
345 | ||
847bf71a | 346 | void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence) |
0f980a35 | 347 | { |
75cc2c35 MD |
348 | struct ctf_file_stream *file_stream = |
349 | container_of(pos, struct ctf_file_stream, pos); | |
0f980a35 | 350 | int ret; |
8c572eba MD |
351 | off_t off; |
352 | struct packet_index *index; | |
0f980a35 | 353 | |
8c572eba MD |
354 | if (pos->prot == PROT_WRITE && pos->content_size_loc) |
355 | *pos->content_size_loc = pos->offset; | |
0f980a35 MD |
356 | |
357 | if (pos->base) { | |
358 | /* unmap old base */ | |
8c572eba | 359 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); |
0f980a35 | 360 | if (ret) { |
3394d22e | 361 | fprintf(stderr, "[error] Unable to unmap old base: %s.\n", |
0f980a35 MD |
362 | strerror(errno)); |
363 | assert(0); | |
364 | } | |
847bf71a | 365 | pos->base = NULL; |
0f980a35 MD |
366 | } |
367 | ||
8c572eba | 368 | /* |
46322b33 | 369 | * The caller should never ask for ctf_move_pos across packets, |
8c572eba MD |
370 | * except to get exactly at the beginning of the next packet. |
371 | */ | |
372 | if (pos->prot == PROT_WRITE) { | |
989c73bc MD |
373 | switch (whence) { |
374 | case SEEK_CUR: | |
375 | /* The writer will add padding */ | |
376 | assert(pos->offset + offset == pos->packet_size); | |
8c572eba | 377 | pos->mmap_offset += WRITE_PACKET_LEN / CHAR_BIT; |
989c73bc MD |
378 | break; |
379 | case SEEK_SET: | |
380 | assert(offset == 0); /* only seek supported for now */ | |
381 | pos->cur_index = 0; | |
382 | break; | |
383 | default: | |
384 | assert(0); | |
385 | } | |
8c572eba MD |
386 | pos->content_size = -1U; /* Unknown at this point */ |
387 | pos->packet_size = WRITE_PACKET_LEN; | |
989c73bc MD |
388 | off = posix_fallocate(pos->fd, pos->mmap_offset, |
389 | pos->packet_size / CHAR_BIT); | |
8c572eba | 390 | assert(off >= 0); |
847bf71a | 391 | pos->offset = 0; |
8c572eba | 392 | } else { |
5f643ed7 | 393 | read_next_packet: |
847bf71a MD |
394 | switch (whence) { |
395 | case SEEK_CUR: | |
41e82e00 MD |
396 | { |
397 | uint32_t events_discarded_diff; | |
398 | ||
399 | /* Print lost event count */ | |
400 | index = &g_array_index(pos->packet_index, | |
401 | struct packet_index, pos->cur_index); | |
402 | events_discarded_diff = index->events_discarded; | |
403 | if (pos->cur_index > 0) { | |
404 | index = &g_array_index(pos->packet_index, | |
405 | struct packet_index, | |
406 | pos->cur_index - 1); | |
407 | events_discarded_diff -= index->events_discarded; | |
408 | } | |
fca04958 | 409 | file_stream->parent.events_discarded = events_discarded_diff; |
5f643ed7 MD |
410 | if (pos->offset == EOF) |
411 | return; | |
847bf71a MD |
412 | /* The reader will expect us to skip padding */ |
413 | assert(pos->offset + offset == pos->content_size); | |
8c572eba | 414 | ++pos->cur_index; |
fca04958 | 415 | file_stream->parent.prev_timestamp = file_stream->parent.timestamp; |
847bf71a | 416 | break; |
41e82e00 | 417 | } |
847bf71a MD |
418 | case SEEK_SET: |
419 | assert(offset == 0); /* only seek supported for now */ | |
420 | pos->cur_index = 0; | |
fca04958 | 421 | file_stream->parent.prev_timestamp = 0; |
847bf71a MD |
422 | break; |
423 | default: | |
424 | assert(0); | |
425 | } | |
426 | if (pos->cur_index >= pos->packet_index->len) { | |
670977d3 | 427 | pos->offset = EOF; |
847bf71a MD |
428 | return; |
429 | } | |
8c572eba MD |
430 | index = &g_array_index(pos->packet_index, struct packet_index, |
431 | pos->cur_index); | |
432 | pos->mmap_offset = index->offset; | |
433 | ||
434 | /* Lookup context/packet size in index */ | |
2d0bea29 | 435 | file_stream->parent.timestamp = index->timestamp_begin; |
8c572eba MD |
436 | pos->content_size = index->content_size; |
437 | pos->packet_size = index->packet_size; | |
5f643ed7 | 438 | if (index->data_offset < index->content_size) { |
75cc2c35 | 439 | pos->offset = 0; /* will read headers */ |
5f643ed7 MD |
440 | } else if (index->data_offset == index->content_size) { |
441 | /* empty packet */ | |
442 | pos->offset = index->data_offset; | |
443 | offset = 0; | |
3abe83c7 | 444 | whence = SEEK_CUR; |
5f643ed7 | 445 | goto read_next_packet; |
7eda6fc7 | 446 | } else { |
2b9a764d MD |
447 | pos->offset = EOF; |
448 | return; | |
449 | } | |
8c572eba | 450 | } |
0f980a35 | 451 | /* map new base. Need mapping length from header. */ |
8c572eba MD |
452 | pos->base = mmap(NULL, pos->packet_size / CHAR_BIT, pos->prot, |
453 | pos->flags, pos->fd, pos->mmap_offset); | |
847bf71a | 454 | if (pos->base == MAP_FAILED) { |
3394d22e | 455 | fprintf(stderr, "[error] mmap error %s.\n", |
847bf71a MD |
456 | strerror(errno)); |
457 | assert(0); | |
458 | } | |
75cc2c35 MD |
459 | |
460 | /* update trace_packet_header and stream_packet_context */ | |
2d0bea29 | 461 | if (pos->prot != PROT_WRITE && file_stream->parent.trace_packet_header) { |
75cc2c35 | 462 | /* Read packet header */ |
2d0bea29 | 463 | ret = generic_rw(&pos->parent, &file_stream->parent.trace_packet_header->p); |
75cc2c35 MD |
464 | assert(!ret); |
465 | } | |
2d0bea29 | 466 | if (pos->prot != PROT_WRITE && file_stream->parent.stream_packet_context) { |
75cc2c35 | 467 | /* Read packet context */ |
2d0bea29 | 468 | ret = generic_rw(&pos->parent, &file_stream->parent.stream_packet_context->p); |
75cc2c35 MD |
469 | assert(!ret); |
470 | } | |
0f980a35 MD |
471 | } |
472 | ||
b4c19c1e MD |
473 | static |
474 | int packet_metadata(struct ctf_trace *td, FILE *fp) | |
475 | { | |
476 | uint32_t magic; | |
477 | size_t len; | |
478 | int ret = 0; | |
479 | ||
480 | len = fread(&magic, sizeof(magic), 1, fp); | |
a0fe7d97 | 481 | if (len != 1) { |
b4c19c1e MD |
482 | goto end; |
483 | } | |
484 | if (magic == TSDL_MAGIC) { | |
485 | ret = 1; | |
486 | td->byte_order = BYTE_ORDER; | |
0d336fdf | 487 | CTF_TRACE_SET_FIELD(td, byte_order); |
b4c19c1e MD |
488 | } else if (magic == GUINT32_SWAP_LE_BE(TSDL_MAGIC)) { |
489 | ret = 1; | |
490 | td->byte_order = (BYTE_ORDER == BIG_ENDIAN) ? | |
491 | LITTLE_ENDIAN : BIG_ENDIAN; | |
0d336fdf | 492 | CTF_TRACE_SET_FIELD(td, byte_order); |
b4c19c1e MD |
493 | } |
494 | end: | |
495 | rewind(fp); | |
496 | return ret; | |
497 | } | |
498 | ||
5c262147 MD |
499 | /* |
500 | * Returns 0 on success, -1 on error. | |
501 | */ | |
502 | static | |
503 | int check_version(unsigned int major, unsigned int minor) | |
504 | { | |
505 | switch (major) { | |
506 | case 1: | |
507 | switch (minor) { | |
508 | case 8: | |
509 | return 0; | |
510 | default: | |
511 | goto warning; | |
512 | } | |
513 | default: | |
514 | goto warning; | |
515 | ||
516 | } | |
517 | ||
518 | /* eventually return an error instead of warning */ | |
519 | warning: | |
3394d22e | 520 | fprintf(stderr, "[warning] Unsupported CTF specification version %u.%u. Trying anyway.\n", |
5c262147 MD |
521 | major, minor); |
522 | return 0; | |
523 | } | |
524 | ||
b4c19c1e MD |
525 | static |
526 | int ctf_open_trace_metadata_packet_read(struct ctf_trace *td, FILE *in, | |
527 | FILE *out) | |
528 | { | |
529 | struct metadata_packet_header header; | |
a0fe7d97 | 530 | size_t readlen, writelen, toread; |
f8254867 | 531 | char buf[4096 + 1]; /* + 1 for debug-mode \0 */ |
b4c19c1e MD |
532 | int ret = 0; |
533 | ||
a91a962e | 534 | readlen = fread(&header, header_sizeof(header), 1, in); |
a0fe7d97 | 535 | if (readlen < 1) |
b4c19c1e MD |
536 | return -EINVAL; |
537 | ||
538 | if (td->byte_order != BYTE_ORDER) { | |
539 | header.magic = GUINT32_SWAP_LE_BE(header.magic); | |
540 | header.checksum = GUINT32_SWAP_LE_BE(header.checksum); | |
541 | header.content_size = GUINT32_SWAP_LE_BE(header.content_size); | |
542 | header.packet_size = GUINT32_SWAP_LE_BE(header.packet_size); | |
543 | } | |
544 | if (header.checksum) | |
3394d22e | 545 | fprintf(stderr, "[warning] checksum verification not supported yet.\n"); |
b4c19c1e | 546 | if (header.compression_scheme) { |
3394d22e | 547 | fprintf(stderr, "[error] compression (%u) not supported yet.\n", |
b4c19c1e MD |
548 | header.compression_scheme); |
549 | return -EINVAL; | |
550 | } | |
551 | if (header.encryption_scheme) { | |
3394d22e | 552 | fprintf(stderr, "[error] encryption (%u) not supported yet.\n", |
b4c19c1e MD |
553 | header.encryption_scheme); |
554 | return -EINVAL; | |
555 | } | |
556 | if (header.checksum_scheme) { | |
3394d22e | 557 | fprintf(stderr, "[error] checksum (%u) not supported yet.\n", |
b4c19c1e MD |
558 | header.checksum_scheme); |
559 | return -EINVAL; | |
560 | } | |
5c262147 MD |
561 | if (check_version(header.major, header.minor) < 0) |
562 | return -EINVAL; | |
b4c19c1e MD |
563 | if (!CTF_TRACE_FIELD_IS_SET(td, uuid)) { |
564 | memcpy(td->uuid, header.uuid, sizeof(header.uuid)); | |
565 | CTF_TRACE_SET_FIELD(td, uuid); | |
566 | } else { | |
567 | if (uuid_compare(header.uuid, td->uuid)) | |
568 | return -EINVAL; | |
569 | } | |
570 | ||
255b2138 | 571 | toread = (header.content_size / CHAR_BIT) - header_sizeof(header); |
a0fe7d97 MD |
572 | |
573 | for (;;) { | |
f8254867 | 574 | readlen = fread(buf, sizeof(char), min(sizeof(buf) - 1, toread), in); |
b4c19c1e MD |
575 | if (ferror(in)) { |
576 | ret = -EINVAL; | |
577 | break; | |
578 | } | |
4152822b | 579 | if (babeltrace_debug) { |
f8254867 | 580 | buf[readlen] = '\0'; |
3394d22e | 581 | fprintf(stderr, "[debug] metadata packet read: %s\n", |
4152822b MD |
582 | buf); |
583 | } | |
584 | ||
b4c19c1e MD |
585 | writelen = fwrite(buf, sizeof(char), readlen, out); |
586 | if (writelen < readlen) { | |
587 | ret = -EIO; | |
588 | break; | |
589 | } | |
590 | if (ferror(out)) { | |
591 | ret = -EINVAL; | |
592 | break; | |
593 | } | |
a0fe7d97 MD |
594 | toread -= readlen; |
595 | if (!toread) { | |
7f4b5c4d | 596 | ret = 0; /* continue reading next packet */ |
ddbc52af | 597 | goto read_padding; |
a0fe7d97 | 598 | } |
b4c19c1e MD |
599 | } |
600 | return ret; | |
ddbc52af MD |
601 | |
602 | read_padding: | |
603 | toread = (header.packet_size - header.content_size) / CHAR_BIT; | |
604 | ret = fseek(in, toread, SEEK_CUR); | |
605 | if (ret < 0) { | |
3394d22e | 606 | fprintf(stderr, "[warning] Missing padding at end of file\n"); |
ddbc52af MD |
607 | ret = 0; |
608 | } | |
609 | return ret; | |
b4c19c1e MD |
610 | } |
611 | ||
612 | static | |
613 | int ctf_open_trace_metadata_stream_read(struct ctf_trace *td, FILE **fp, | |
614 | char **buf) | |
615 | { | |
616 | FILE *in, *out; | |
617 | size_t size; | |
618 | int ret; | |
619 | ||
620 | in = *fp; | |
c4f5487e MD |
621 | /* |
622 | * Using strlen on *buf instead of size of open_memstream | |
623 | * because its size includes garbage at the end (after final | |
624 | * \0). This is the allocated size, not the actual string size. | |
625 | */ | |
b4c19c1e | 626 | out = open_memstream(buf, &size); |
a569a564 MD |
627 | if (out == NULL) { |
628 | perror("Metadata open_memstream"); | |
b4c19c1e | 629 | return -errno; |
a569a564 | 630 | } |
b4c19c1e MD |
631 | for (;;) { |
632 | ret = ctf_open_trace_metadata_packet_read(td, in, out); | |
7f4b5c4d | 633 | if (ret) { |
b4c19c1e | 634 | break; |
7f4b5c4d MD |
635 | } |
636 | if (feof(in)) { | |
637 | ret = 0; | |
b4c19c1e MD |
638 | break; |
639 | } | |
640 | } | |
641 | fclose(out); /* flush the buffer */ | |
642 | fclose(in); | |
643 | /* open for reading */ | |
c4f5487e | 644 | *fp = fmemopen(*buf, strlen(*buf), "rb"); |
a569a564 MD |
645 | if (!*fp) { |
646 | perror("Metadata fmemopen"); | |
647 | return -errno; | |
648 | } | |
b4c19c1e MD |
649 | return 0; |
650 | } | |
651 | ||
65102a8c | 652 | static |
b086c01a JD |
653 | int ctf_open_trace_metadata_read(struct ctf_trace *td, |
654 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, | |
ae23d232 | 655 | int whence), FILE *metadata_fp) |
65102a8c MD |
656 | { |
657 | struct ctf_scanner *scanner; | |
2d0bea29 | 658 | struct ctf_file_stream *metadata_stream; |
65102a8c | 659 | FILE *fp; |
b4c19c1e | 660 | char *buf = NULL; |
65102a8c MD |
661 | int ret = 0; |
662 | ||
2d0bea29 | 663 | metadata_stream = g_new0(struct ctf_file_stream, 1); |
b086c01a JD |
664 | |
665 | if (move_pos_slow) { | |
666 | metadata_stream->pos.move_pos_slow = move_pos_slow; | |
667 | } else { | |
668 | fprintf(stderr, "[error] move_pos_slow function undefined.\n"); | |
669 | ret = -1; | |
670 | goto end_stream; | |
671 | } | |
672 | ||
ae23d232 JD |
673 | if (metadata_fp) { |
674 | fp = metadata_fp; | |
675 | } else { | |
676 | td->metadata = &metadata_stream->parent; | |
677 | metadata_stream->pos.fd = openat(td->dirfd, "metadata", O_RDONLY); | |
678 | if (metadata_stream->pos.fd < 0) { | |
3394d22e | 679 | fprintf(stderr, "Unable to open metadata.\n"); |
ae23d232 JD |
680 | return metadata_stream->pos.fd; |
681 | } | |
65102a8c | 682 | |
ae23d232 JD |
683 | fp = fdopen(metadata_stream->pos.fd, "r"); |
684 | if (!fp) { | |
3394d22e | 685 | fprintf(stderr, "[error] Unable to open metadata stream.\n"); |
a569a564 | 686 | perror("Metadata stream open"); |
ae23d232 JD |
687 | ret = -errno; |
688 | goto end_stream; | |
689 | } | |
690 | } | |
65102a8c MD |
691 | if (babeltrace_debug) |
692 | yydebug = 1; | |
693 | ||
b4c19c1e MD |
694 | if (packet_metadata(td, fp)) { |
695 | ret = ctf_open_trace_metadata_stream_read(td, &fp, &buf); | |
696 | if (ret) | |
697 | goto end_packet_read; | |
da75b0f7 | 698 | } else { |
5c262147 MD |
699 | unsigned int major, minor; |
700 | ssize_t nr_items; | |
8c2df3f5 | 701 | |
da75b0f7 | 702 | td->byte_order = BYTE_ORDER; |
8c2df3f5 | 703 | |
5c262147 MD |
704 | /* Check text-only metadata header and version */ |
705 | nr_items = fscanf(fp, "/* CTF %u.%u", &major, &minor); | |
706 | if (nr_items < 2) | |
3394d22e | 707 | fprintf(stderr, "[warning] Ill-shapen or missing \"/* CTF x.y\" header for text-only metadata.\n"); |
5c262147 MD |
708 | if (check_version(major, minor) < 0) { |
709 | ret = -EINVAL; | |
710 | goto end_packet_read; | |
711 | } | |
8c2df3f5 | 712 | rewind(fp); |
b4c19c1e MD |
713 | } |
714 | ||
65102a8c MD |
715 | scanner = ctf_scanner_alloc(fp); |
716 | if (!scanner) { | |
3394d22e | 717 | fprintf(stderr, "[error] Error allocating scanner\n"); |
65102a8c MD |
718 | ret = -ENOMEM; |
719 | goto end_scanner_alloc; | |
720 | } | |
721 | ret = ctf_scanner_append_ast(scanner); | |
722 | if (ret) { | |
3394d22e | 723 | fprintf(stderr, "[error] Error creating AST\n"); |
65102a8c MD |
724 | goto end; |
725 | } | |
726 | ||
727 | if (babeltrace_debug) { | |
3394d22e | 728 | ret = ctf_visitor_print_xml(stderr, 0, &scanner->ast->root); |
65102a8c | 729 | if (ret) { |
3394d22e | 730 | fprintf(stderr, "[error] Error visiting AST for XML output\n"); |
65102a8c MD |
731 | goto end; |
732 | } | |
733 | } | |
734 | ||
3394d22e | 735 | ret = ctf_visitor_semantic_check(stderr, 0, &scanner->ast->root); |
65102a8c | 736 | if (ret) { |
3394d22e | 737 | fprintf(stderr, "[error] Error in CTF semantic validation %d\n", ret); |
65102a8c MD |
738 | goto end; |
739 | } | |
3394d22e | 740 | ret = ctf_visitor_construct_metadata(stderr, 0, &scanner->ast->root, |
ac5c6ca0 | 741 | td, td->byte_order); |
65102a8c | 742 | if (ret) { |
3394d22e | 743 | fprintf(stderr, "[error] Error in CTF metadata constructor %d\n", ret); |
65102a8c MD |
744 | goto end; |
745 | } | |
746 | end: | |
747 | ctf_scanner_free(scanner); | |
748 | end_scanner_alloc: | |
b4c19c1e | 749 | end_packet_read: |
65102a8c | 750 | fclose(fp); |
b4c19c1e | 751 | free(buf); |
65102a8c | 752 | end_stream: |
2d0bea29 MD |
753 | close(metadata_stream->pos.fd); |
754 | if (ret) | |
755 | g_free(metadata_stream); | |
0f980a35 MD |
756 | return ret; |
757 | } | |
758 | ||
e28d4618 | 759 | static |
42dc00b7 MD |
760 | struct ctf_stream_event *create_event_definitions(struct ctf_trace *td, |
761 | struct ctf_stream *stream, | |
762 | struct ctf_event *event) | |
e28d4618 | 763 | { |
42dc00b7 | 764 | struct ctf_stream_event *stream_event = g_new0(struct ctf_stream_event, 1); |
e28d4618 MD |
765 | |
766 | if (event->context_decl) { | |
767 | struct definition *definition = | |
768 | event->context_decl->p.definition_new(&event->context_decl->p, | |
769 | stream->parent_def_scope, 0, 0, "event.context"); | |
770 | if (!definition) { | |
771 | goto error; | |
772 | } | |
42dc00b7 | 773 | stream_event->event_context = container_of(definition, |
e28d4618 | 774 | struct definition_struct, p); |
42dc00b7 | 775 | stream->parent_def_scope = stream_event->event_context->p.scope; |
e28d4618 MD |
776 | } |
777 | if (event->fields_decl) { | |
778 | struct definition *definition = | |
779 | event->fields_decl->p.definition_new(&event->fields_decl->p, | |
780 | stream->parent_def_scope, 0, 0, "event.fields"); | |
781 | if (!definition) { | |
782 | goto error; | |
783 | } | |
42dc00b7 | 784 | stream_event->event_fields = container_of(definition, |
e28d4618 | 785 | struct definition_struct, p); |
42dc00b7 | 786 | stream->parent_def_scope = stream_event->event_fields->p.scope; |
e28d4618 | 787 | } |
42dc00b7 | 788 | return stream_event; |
e28d4618 MD |
789 | |
790 | error: | |
42dc00b7 MD |
791 | if (stream_event->event_fields) |
792 | definition_unref(&stream_event->event_fields->p); | |
793 | if (stream_event->event_context) | |
794 | definition_unref(&stream_event->event_context->p); | |
e28d4618 MD |
795 | return NULL; |
796 | } | |
797 | ||
798 | static | |
799 | int create_stream_definitions(struct ctf_trace *td, struct ctf_stream *stream) | |
800 | { | |
801 | struct ctf_stream_class *stream_class; | |
802 | int ret; | |
803 | int i; | |
804 | ||
805 | if (stream->stream_definitions_created) | |
806 | return 0; | |
807 | ||
808 | stream_class = stream->stream_class; | |
809 | ||
810 | if (stream_class->packet_context_decl) { | |
811 | struct definition *definition = | |
812 | stream_class->packet_context_decl->p.definition_new(&stream_class->packet_context_decl->p, | |
813 | stream->parent_def_scope, 0, 0, "stream.packet.context"); | |
814 | if (!definition) { | |
815 | ret = -EINVAL; | |
816 | goto error; | |
817 | } | |
818 | stream->stream_packet_context = container_of(definition, | |
819 | struct definition_struct, p); | |
820 | stream->parent_def_scope = stream->stream_packet_context->p.scope; | |
821 | } | |
822 | if (stream_class->event_header_decl) { | |
823 | struct definition *definition = | |
824 | stream_class->event_header_decl->p.definition_new(&stream_class->event_header_decl->p, | |
825 | stream->parent_def_scope, 0, 0, "stream.event.header"); | |
826 | if (!definition) { | |
827 | ret = -EINVAL; | |
828 | goto error; | |
829 | } | |
830 | stream->stream_event_header = | |
831 | container_of(definition, struct definition_struct, p); | |
832 | stream->parent_def_scope = stream->stream_event_header->p.scope; | |
833 | } | |
834 | if (stream_class->event_context_decl) { | |
835 | struct definition *definition = | |
836 | stream_class->event_context_decl->p.definition_new(&stream_class->event_context_decl->p, | |
837 | stream->parent_def_scope, 0, 0, "stream.event.context"); | |
838 | if (!definition) { | |
839 | ret = -EINVAL; | |
840 | goto error; | |
841 | } | |
842 | stream->stream_event_context = | |
843 | container_of(definition, struct definition_struct, p); | |
844 | stream->parent_def_scope = stream->stream_event_context->p.scope; | |
845 | } | |
846 | stream->events_by_id = g_ptr_array_new(); | |
847 | g_ptr_array_set_size(stream->events_by_id, stream_class->events_by_id->len); | |
848 | for (i = 0; i < stream->events_by_id->len; i++) { | |
849 | struct ctf_event *event = g_ptr_array_index(stream_class->events_by_id, i); | |
42dc00b7 | 850 | struct ctf_stream_event *stream_event; |
e28d4618 MD |
851 | |
852 | if (!event) | |
853 | continue; | |
42dc00b7 MD |
854 | stream_event = create_event_definitions(td, stream, event); |
855 | if (!stream_event) | |
e28d4618 | 856 | goto error_event; |
42dc00b7 | 857 | g_ptr_array_index(stream->events_by_id, i) = stream_event; |
e28d4618 MD |
858 | } |
859 | return 0; | |
860 | ||
861 | error_event: | |
862 | for (i = 0; i < stream->events_by_id->len; i++) { | |
42dc00b7 MD |
863 | struct ctf_stream_event *stream_event = g_ptr_array_index(stream->events_by_id, i); |
864 | if (stream_event) | |
865 | g_free(stream_event); | |
e28d4618 MD |
866 | } |
867 | g_ptr_array_free(stream->events_by_id, TRUE); | |
868 | error: | |
869 | if (stream->stream_event_context) | |
870 | definition_unref(&stream->stream_event_context->p); | |
871 | if (stream->stream_event_header) | |
872 | definition_unref(&stream->stream_event_header->p); | |
873 | if (stream->stream_packet_context) | |
874 | definition_unref(&stream->stream_packet_context->p); | |
875 | return ret; | |
876 | } | |
877 | ||
0f980a35 MD |
878 | |
879 | static | |
46322b33 | 880 | int create_stream_packet_index(struct ctf_trace *td, |
0f980a35 MD |
881 | struct ctf_file_stream *file_stream) |
882 | { | |
aa6bffae | 883 | struct ctf_stream_class *stream; |
0f980a35 | 884 | int len_index; |
46322b33 | 885 | struct ctf_stream_pos *pos; |
0f980a35 MD |
886 | struct stat filestats; |
887 | struct packet_index packet_index; | |
888 | int first_packet = 1; | |
889 | int ret; | |
890 | ||
891 | pos = &file_stream->pos; | |
892 | ||
893 | ret = fstat(pos->fd, &filestats); | |
894 | if (ret < 0) | |
895 | return ret; | |
896 | ||
8895362d MD |
897 | if (filestats.st_size < MAX_PACKET_HEADER_LEN / CHAR_BIT) |
898 | return -EINVAL; | |
899 | ||
0f980a35 MD |
900 | for (pos->mmap_offset = 0; pos->mmap_offset < filestats.st_size; ) { |
901 | uint64_t stream_id = 0; | |
902 | ||
903 | if (pos->base) { | |
904 | /* unmap old base */ | |
8c572eba | 905 | ret = munmap(pos->base, pos->packet_size / CHAR_BIT); |
0f980a35 | 906 | if (ret) { |
3394d22e | 907 | fprintf(stderr, "[error] Unable to unmap old base: %s.\n", |
0f980a35 MD |
908 | strerror(errno)); |
909 | return ret; | |
910 | } | |
8c572eba | 911 | pos->base = NULL; |
0f980a35 MD |
912 | } |
913 | /* map new base. Need mapping length from header. */ | |
8c572eba | 914 | pos->base = mmap(NULL, MAX_PACKET_HEADER_LEN / CHAR_BIT, PROT_READ, |
0f980a35 | 915 | MAP_PRIVATE, pos->fd, pos->mmap_offset); |
dc48ecad MD |
916 | pos->content_size = MAX_PACKET_HEADER_LEN; /* Unknown at this point */ |
917 | pos->packet_size = MAX_PACKET_HEADER_LEN; /* Unknown at this point */ | |
0f980a35 MD |
918 | pos->offset = 0; /* Position of the packet header */ |
919 | ||
8c572eba MD |
920 | packet_index.offset = pos->mmap_offset; |
921 | packet_index.content_size = 0; | |
922 | packet_index.packet_size = 0; | |
75cc2c35 MD |
923 | packet_index.timestamp_begin = 0; |
924 | packet_index.timestamp_end = 0; | |
41e82e00 | 925 | packet_index.events_discarded = 0; |
8c572eba | 926 | |
0f980a35 | 927 | /* read and check header, set stream id (and check) */ |
2d0bea29 | 928 | if (file_stream->parent.trace_packet_header) { |
0f980a35 | 929 | /* Read packet header */ |
2d0bea29 | 930 | ret = generic_rw(&pos->parent, &file_stream->parent.trace_packet_header->p); |
c5e74408 MD |
931 | if (ret) |
932 | return ret; | |
2d0bea29 | 933 | len_index = struct_declaration_lookup_field_index(file_stream->parent.trace_packet_header->declaration, g_quark_from_static_string("magic")); |
0f980a35 | 934 | if (len_index >= 0) { |
b1a2f580 | 935 | struct definition *field; |
f4c56ac2 | 936 | uint64_t magic; |
0f980a35 | 937 | |
2d0bea29 | 938 | field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); |
f4c56ac2 MD |
939 | magic = get_unsigned_int(field); |
940 | if (magic != CTF_MAGIC) { | |
3394d22e | 941 | fprintf(stderr, "[error] Invalid magic number 0x%" PRIX64 " at packet %u (file offset %zd).\n", |
f4c56ac2 | 942 | magic, |
8c572eba MD |
943 | file_stream->pos.packet_index->len, |
944 | (ssize_t) pos->mmap_offset); | |
0f980a35 MD |
945 | return -EINVAL; |
946 | } | |
947 | } | |
948 | ||
949 | /* check uuid */ | |
2d0bea29 | 950 | len_index = struct_declaration_lookup_field_index(file_stream->parent.trace_packet_header->declaration, g_quark_from_static_string("uuid")); |
0f980a35 MD |
951 | if (len_index >= 0) { |
952 | struct definition_array *defarray; | |
b1a2f580 | 953 | struct definition *field; |
0f980a35 MD |
954 | uint64_t i; |
955 | uint8_t uuidval[UUID_LEN]; | |
956 | ||
2d0bea29 | 957 | field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); |
b1a2f580 MD |
958 | assert(field->declaration->id == CTF_TYPE_ARRAY); |
959 | defarray = container_of(field, struct definition_array, p); | |
3838df27 | 960 | assert(array_len(defarray) == UUID_LEN); |
0f980a35 MD |
961 | |
962 | for (i = 0; i < UUID_LEN; i++) { | |
963 | struct definition *elem; | |
0f980a35 MD |
964 | |
965 | elem = array_index(defarray, i); | |
f4c56ac2 | 966 | uuidval[i] = get_unsigned_int(elem); |
0f980a35 | 967 | } |
46322b33 | 968 | ret = uuid_compare(td->uuid, uuidval); |
0f980a35 | 969 | if (ret) { |
3394d22e | 970 | fprintf(stderr, "[error] Unique Universal Identifiers do not match.\n"); |
0f980a35 MD |
971 | return -EINVAL; |
972 | } | |
973 | } | |
974 | ||
975 | ||
2d0bea29 | 976 | len_index = struct_declaration_lookup_field_index(file_stream->parent.trace_packet_header->declaration, g_quark_from_static_string("stream_id")); |
0f980a35 | 977 | if (len_index >= 0) { |
b1a2f580 | 978 | struct definition *field; |
0f980a35 | 979 | |
2d0bea29 | 980 | field = struct_definition_get_field_from_index(file_stream->parent.trace_packet_header, len_index); |
f4c56ac2 | 981 | stream_id = get_unsigned_int(field); |
0f980a35 MD |
982 | } |
983 | } | |
984 | ||
2d0bea29 | 985 | if (!first_packet && file_stream->parent.stream_id != stream_id) { |
3394d22e | 986 | fprintf(stderr, "[error] Stream ID is changing within a stream.\n"); |
0f980a35 MD |
987 | return -EINVAL; |
988 | } | |
989 | if (first_packet) { | |
2d0bea29 | 990 | file_stream->parent.stream_id = stream_id; |
46322b33 | 991 | if (stream_id >= td->streams->len) { |
3394d22e | 992 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); |
0f980a35 MD |
993 | return -EINVAL; |
994 | } | |
46322b33 | 995 | stream = g_ptr_array_index(td->streams, stream_id); |
0f980a35 | 996 | if (!stream) { |
3394d22e | 997 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared in metadata.\n", stream_id); |
0f980a35 MD |
998 | return -EINVAL; |
999 | } | |
2d0bea29 | 1000 | file_stream->parent.stream_class = stream; |
01c76b24 | 1001 | ret = create_stream_definitions(td, &file_stream->parent); |
862434ec MD |
1002 | if (ret) |
1003 | return ret; | |
0f980a35 MD |
1004 | } |
1005 | first_packet = 0; | |
1006 | ||
2d0bea29 | 1007 | if (file_stream->parent.stream_packet_context) { |
dc48ecad | 1008 | /* Read packet context */ |
2d0bea29 | 1009 | ret = generic_rw(&pos->parent, &file_stream->parent.stream_packet_context->p); |
c5e74408 MD |
1010 | if (ret) |
1011 | return ret; | |
dc48ecad | 1012 | /* read content size from header */ |
2d0bea29 | 1013 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("content_size")); |
dc48ecad | 1014 | if (len_index >= 0) { |
b1a2f580 | 1015 | struct definition *field; |
dc48ecad | 1016 | |
2d0bea29 | 1017 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1018 | packet_index.content_size = get_unsigned_int(field); |
dc48ecad MD |
1019 | } else { |
1020 | /* Use file size for packet size */ | |
8c572eba | 1021 | packet_index.content_size = filestats.st_size * CHAR_BIT; |
dc48ecad MD |
1022 | } |
1023 | ||
1024 | /* read packet size from header */ | |
2d0bea29 | 1025 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("packet_size")); |
dc48ecad | 1026 | if (len_index >= 0) { |
b1a2f580 | 1027 | struct definition *field; |
dc48ecad | 1028 | |
2d0bea29 | 1029 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1030 | packet_index.packet_size = get_unsigned_int(field); |
dc48ecad MD |
1031 | } else { |
1032 | /* Use content size if non-zero, else file size */ | |
8c572eba | 1033 | packet_index.packet_size = packet_index.content_size ? : filestats.st_size * CHAR_BIT; |
dc48ecad | 1034 | } |
75cc2c35 MD |
1035 | |
1036 | /* read timestamp begin from header */ | |
2d0bea29 | 1037 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("timestamp_begin")); |
75cc2c35 | 1038 | if (len_index >= 0) { |
75cc2c35 MD |
1039 | struct definition *field; |
1040 | ||
2d0bea29 | 1041 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1042 | packet_index.timestamp_begin = get_unsigned_int(field); |
75cc2c35 MD |
1043 | } |
1044 | ||
1045 | /* read timestamp end from header */ | |
2d0bea29 | 1046 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("timestamp_end")); |
75cc2c35 | 1047 | if (len_index >= 0) { |
75cc2c35 MD |
1048 | struct definition *field; |
1049 | ||
2d0bea29 | 1050 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); |
f4c56ac2 | 1051 | packet_index.timestamp_end = get_unsigned_int(field); |
75cc2c35 | 1052 | } |
41e82e00 MD |
1053 | |
1054 | /* read events discarded from header */ | |
1055 | len_index = struct_declaration_lookup_field_index(file_stream->parent.stream_packet_context->declaration, g_quark_from_static_string("events_discarded")); | |
1056 | if (len_index >= 0) { | |
1057 | struct definition *field; | |
1058 | ||
1059 | field = struct_definition_get_field_from_index(file_stream->parent.stream_packet_context, len_index); | |
1060 | packet_index.events_discarded = get_unsigned_int(field); | |
1061 | } | |
0f980a35 MD |
1062 | } else { |
1063 | /* Use file size for packet size */ | |
8c572eba | 1064 | packet_index.content_size = filestats.st_size * CHAR_BIT; |
0f980a35 | 1065 | /* Use content size if non-zero, else file size */ |
8c572eba | 1066 | packet_index.packet_size = packet_index.content_size ? : filestats.st_size * CHAR_BIT; |
0f980a35 | 1067 | } |
546293fa MD |
1068 | |
1069 | /* Validate content size and packet size values */ | |
1070 | if (packet_index.content_size > packet_index.packet_size) { | |
3394d22e | 1071 | fprintf(stderr, "[error] Content size (%zu bits) is larger than packet size (%zu bits).\n", |
546293fa MD |
1072 | packet_index.content_size, packet_index.packet_size); |
1073 | return -EINVAL; | |
1074 | } | |
1075 | ||
58b0b883 | 1076 | if (packet_index.packet_size > (filestats.st_size - packet_index.offset) * CHAR_BIT) { |
3394d22e | 1077 | fprintf(stderr, "[error] Packet size (%zu bits) is larger than remaining file size (%zu bits).\n", |
5aebb2ee | 1078 | packet_index.content_size, (size_t) (filestats.st_size - packet_index.offset) * CHAR_BIT); |
546293fa MD |
1079 | return -EINVAL; |
1080 | } | |
1081 | ||
847bf71a MD |
1082 | /* Save position after header and context */ |
1083 | packet_index.data_offset = pos->offset; | |
0f980a35 | 1084 | |
0f980a35 MD |
1085 | /* add index to packet array */ |
1086 | g_array_append_val(file_stream->pos.packet_index, packet_index); | |
1087 | ||
8c572eba | 1088 | pos->mmap_offset += packet_index.packet_size / CHAR_BIT; |
0f980a35 MD |
1089 | } |
1090 | ||
847bf71a MD |
1091 | /* Move pos back to beginning of file */ |
1092 | ctf_move_pos_slow(pos, 0, SEEK_SET); /* position for write */ | |
1093 | ||
0f980a35 MD |
1094 | return 0; |
1095 | } | |
1096 | ||
e28d4618 MD |
1097 | static |
1098 | int create_trace_definitions(struct ctf_trace *td, struct ctf_stream *stream) | |
1099 | { | |
1100 | int ret; | |
1101 | ||
1102 | if (td->packet_header_decl) { | |
1103 | struct definition *definition = | |
1104 | td->packet_header_decl->p.definition_new(&td->packet_header_decl->p, | |
1105 | stream->parent_def_scope, 0, 0, "trace.packet.header"); | |
1106 | if (!definition) { | |
1107 | ret = -EINVAL; | |
1108 | goto error; | |
1109 | } | |
1110 | stream->trace_packet_header = | |
1111 | container_of(definition, struct definition_struct, p); | |
1112 | stream->parent_def_scope = stream->trace_packet_header->p.scope; | |
1113 | } | |
1114 | ||
1115 | return 0; | |
1116 | ||
1117 | error: | |
1118 | return ret; | |
1119 | } | |
1120 | ||
0f980a35 MD |
1121 | /* |
1122 | * Note: many file streams can inherit from the same stream class | |
1123 | * description (metadata). | |
1124 | */ | |
1125 | static | |
b086c01a JD |
1126 | int ctf_open_file_stream_read(struct ctf_trace *td, const char *path, int flags, |
1127 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, | |
1128 | int whence)) | |
0f980a35 MD |
1129 | { |
1130 | int ret; | |
1131 | struct ctf_file_stream *file_stream; | |
1132 | ||
46322b33 | 1133 | ret = openat(td->dirfd, path, flags); |
a569a564 MD |
1134 | if (ret < 0) { |
1135 | perror("File stream openat()"); | |
0f980a35 | 1136 | goto error; |
a569a564 | 1137 | } |
0f980a35 | 1138 | file_stream = g_new0(struct ctf_file_stream, 1); |
b086c01a JD |
1139 | |
1140 | if (move_pos_slow) { | |
1141 | file_stream->pos.move_pos_slow = move_pos_slow; | |
1142 | } else { | |
1143 | fprintf(stderr, "[error] move_pos_slow function undefined.\n"); | |
1144 | ret = -1; | |
1145 | goto error_def; | |
1146 | } | |
1147 | ||
8563e754 | 1148 | ctf_init_pos(&file_stream->pos, ret, flags); |
2d0bea29 | 1149 | ret = create_trace_definitions(td, &file_stream->parent); |
e28d4618 MD |
1150 | if (ret) |
1151 | goto error_def; | |
0f980a35 MD |
1152 | ret = create_stream_packet_index(td, file_stream); |
1153 | if (ret) | |
1154 | goto error_index; | |
1155 | /* Add stream file to stream class */ | |
2d0bea29 MD |
1156 | g_ptr_array_add(file_stream->parent.stream_class->streams, |
1157 | &file_stream->parent); | |
0f980a35 MD |
1158 | return 0; |
1159 | ||
1160 | error_index: | |
2d0bea29 MD |
1161 | if (file_stream->parent.trace_packet_header) |
1162 | definition_unref(&file_stream->parent.trace_packet_header->p); | |
e28d4618 | 1163 | error_def: |
46322b33 | 1164 | ctf_fini_pos(&file_stream->pos); |
0f980a35 MD |
1165 | close(file_stream->pos.fd); |
1166 | g_free(file_stream); | |
1167 | error: | |
65102a8c MD |
1168 | return ret; |
1169 | } | |
1170 | ||
8c250d87 MD |
1171 | static void |
1172 | init_domain_name(struct ctf_trace *td) | |
1173 | { | |
1174 | char *start, *end; | |
1175 | ||
1176 | start = td->path + strlen(td->collection_path); | |
e38f07e9 MD |
1177 | while (start[0] == '/') |
1178 | start++; /* skip / */ | |
8c250d87 MD |
1179 | end = strchr(start, '/'); |
1180 | if (!end) | |
e38f07e9 | 1181 | end = start + strlen(start); |
8c250d87 MD |
1182 | memcpy(td->domain, start, end - start); |
1183 | td->domain[end - start] = '\0'; | |
1184 | } | |
1185 | ||
1186 | static void | |
1187 | init_proc_name(struct ctf_trace *td) | |
1188 | { | |
1189 | char buf[PATH_MAX]; | |
1190 | char *start, *end; | |
1191 | ||
1192 | if (td->domain[0] == '\0') | |
1193 | return; | |
1194 | memcpy(buf, td->path, PATH_MAX); | |
1195 | start = buf + strlen(td->collection_path); | |
e38f07e9 MD |
1196 | while (start[0] == '/') |
1197 | start++; /* skip / */ | |
8c250d87 MD |
1198 | start = strchr(start, '/'); /* get begin of domain content */ |
1199 | if (!start) | |
1200 | return; | |
e38f07e9 MD |
1201 | while (start[0] == '/') |
1202 | start++; /* skip / */ | |
8c250d87 MD |
1203 | /* find last -, skips time */ |
1204 | end = strrchr(start, '-'); | |
1205 | if (!end) | |
1206 | return; | |
1207 | *end = '\0'; | |
1208 | /* find previous -, skips date */ | |
1209 | end = strrchr(start, '-'); | |
1210 | if (!end) | |
1211 | return; | |
1212 | *end = '\0'; | |
1213 | /* find previous -, skips pid */ | |
1214 | end = strrchr(start, '-'); | |
1215 | if (!end) | |
1216 | return; | |
1217 | *end = '\0'; | |
1218 | ||
1219 | memcpy(td->procname, start, end - start); | |
1220 | td->procname[end - start] = '\0'; | |
1221 | } | |
1222 | ||
1223 | static void | |
1224 | init_vpid(struct ctf_trace *td) | |
1225 | { | |
1226 | char buf[PATH_MAX]; | |
1227 | char *start, *end; | |
1228 | ||
1229 | if (td->domain[0] == '\0') | |
1230 | return; | |
1231 | memcpy(buf, td->path, PATH_MAX); | |
1232 | start = buf + strlen(td->collection_path); | |
e38f07e9 MD |
1233 | while (start[0] == '/') |
1234 | start++; /* skip / */ | |
8c250d87 MD |
1235 | start = strchr(start, '/'); /* get begin of domain content */ |
1236 | if (!start) | |
1237 | return; | |
e38f07e9 MD |
1238 | while (start[0] == '/') |
1239 | start++; /* skip / */ | |
8c250d87 MD |
1240 | /* find last -, skips time */ |
1241 | end = strrchr(start, '-'); | |
1242 | if (!end) | |
1243 | return; | |
1244 | *end = '\0'; | |
1245 | /* find previous -, skips date */ | |
1246 | end = strrchr(start, '-'); | |
1247 | if (!end) | |
1248 | return; | |
1249 | *end = '\0'; | |
1250 | /* find previous -, skips pid */ | |
1251 | start = strrchr(start, '-'); | |
1252 | if (!start) | |
1253 | return; | |
1254 | start++; /* skip - */ | |
1255 | ||
1256 | memcpy(td->vpid, start, end - start); | |
1257 | td->vpid[end - start] = '\0'; | |
1258 | } | |
1259 | ||
bbefb8dd | 1260 | static |
8c250d87 MD |
1261 | int ctf_open_trace_read(struct ctf_trace *td, const char *collection_path, |
1262 | const char *path, int flags, | |
b086c01a | 1263 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, |
ae23d232 | 1264 | int whence), FILE *metadata_fp) |
bbefb8dd MD |
1265 | { |
1266 | int ret; | |
65102a8c MD |
1267 | struct dirent *dirent; |
1268 | struct dirent *diriter; | |
1269 | size_t dirent_len; | |
48c3d8f9 | 1270 | char *respath, *rescolpath; |
bbefb8dd | 1271 | |
46322b33 | 1272 | td->flags = flags; |
bbefb8dd MD |
1273 | |
1274 | /* Open trace directory */ | |
46322b33 MD |
1275 | td->dir = opendir(path); |
1276 | if (!td->dir) { | |
3394d22e | 1277 | fprintf(stderr, "[error] Unable to open trace directory.\n"); |
bbefb8dd MD |
1278 | ret = -ENOENT; |
1279 | goto error; | |
1280 | } | |
1281 | ||
46322b33 MD |
1282 | td->dirfd = open(path, 0); |
1283 | if (td->dirfd < 0) { | |
3394d22e | 1284 | fprintf(stderr, "[error] Unable to open trace directory file descriptor.\n"); |
a569a564 MD |
1285 | perror("Trace directory open"); |
1286 | ret = -errno; | |
65102a8c MD |
1287 | goto error_dirfd; |
1288 | } | |
48c3d8f9 MD |
1289 | rescolpath = realpath(collection_path, td->collection_path); |
1290 | if (!rescolpath) { | |
3394d22e | 1291 | fprintf(stderr, "[error] collection path resolution failure\n"); |
48c3d8f9 MD |
1292 | return -EINVAL; |
1293 | } | |
1294 | respath = realpath(path, td->path); | |
9db125c8 | 1295 | if (!respath) { |
3394d22e | 1296 | fprintf(stderr, "[error] path resolution failure\n"); |
4ede433e MD |
1297 | return -EINVAL; |
1298 | } | |
8c250d87 MD |
1299 | init_domain_name(td); |
1300 | init_proc_name(td); | |
1301 | init_vpid(td); | |
0f980a35 | 1302 | |
65102a8c MD |
1303 | /* |
1304 | * Keep the metadata file separate. | |
1305 | */ | |
bbefb8dd | 1306 | |
ae23d232 | 1307 | ret = ctf_open_trace_metadata_read(td, move_pos_slow, metadata_fp); |
65102a8c MD |
1308 | if (ret) { |
1309 | goto error_metadata; | |
1310 | } | |
bbefb8dd MD |
1311 | |
1312 | /* | |
1313 | * Open each stream: for each file, try to open, check magic | |
1314 | * number, and get the stream ID to add to the right location in | |
1315 | * the stream array. | |
bbefb8dd MD |
1316 | */ |
1317 | ||
65102a8c | 1318 | dirent_len = offsetof(struct dirent, d_name) + |
46322b33 | 1319 | fpathconf(td->dirfd, _PC_NAME_MAX) + 1; |
bbefb8dd | 1320 | |
65102a8c | 1321 | dirent = malloc(dirent_len); |
bbefb8dd | 1322 | |
65102a8c | 1323 | for (;;) { |
46322b33 | 1324 | ret = readdir_r(td->dir, dirent, &diriter); |
65102a8c | 1325 | if (ret) { |
3394d22e | 1326 | fprintf(stderr, "[error] Readdir error.\n"); |
65102a8c | 1327 | goto readdir_error; |
65102a8c MD |
1328 | } |
1329 | if (!diriter) | |
1330 | break; | |
d8ea2d29 MD |
1331 | /* Ignore hidden files, ., .. and metadata. */ |
1332 | if (!strncmp(diriter->d_name, ".", 1) | |
65102a8c MD |
1333 | || !strcmp(diriter->d_name, "..") |
1334 | || !strcmp(diriter->d_name, "metadata")) | |
1335 | continue; | |
b086c01a | 1336 | ret = ctf_open_file_stream_read(td, diriter->d_name, flags, move_pos_slow); |
dc48ecad | 1337 | if (ret) { |
3394d22e | 1338 | fprintf(stderr, "[error] Open file stream error.\n"); |
dc48ecad MD |
1339 | goto readdir_error; |
1340 | } | |
65102a8c | 1341 | } |
bbefb8dd | 1342 | |
65102a8c | 1343 | free(dirent); |
bbefb8dd | 1344 | return 0; |
65102a8c MD |
1345 | |
1346 | readdir_error: | |
1347 | free(dirent); | |
1348 | error_metadata: | |
46322b33 | 1349 | close(td->dirfd); |
65102a8c | 1350 | error_dirfd: |
46322b33 | 1351 | closedir(td->dir); |
bbefb8dd MD |
1352 | error: |
1353 | return ret; | |
1354 | } | |
1355 | ||
e9378815 | 1356 | static |
8c250d87 | 1357 | struct trace_descriptor *ctf_open_trace(const char *collection_path, const char *path, int flags, |
b086c01a | 1358 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, |
ae23d232 | 1359 | int whence), FILE *metadata_fp) |
bbefb8dd | 1360 | { |
46322b33 | 1361 | struct ctf_trace *td; |
bbefb8dd MD |
1362 | int ret; |
1363 | ||
46322b33 | 1364 | td = g_new0(struct ctf_trace, 1); |
bbefb8dd | 1365 | |
8c572eba | 1366 | switch (flags & O_ACCMODE) { |
bbefb8dd | 1367 | case O_RDONLY: |
b61922b5 | 1368 | if (!path) { |
3394d22e | 1369 | fprintf(stderr, "[error] Path missing for input CTF trace.\n"); |
b61922b5 MD |
1370 | goto error; |
1371 | } | |
8c250d87 | 1372 | ret = ctf_open_trace_read(td, collection_path, path, flags, move_pos_slow, metadata_fp); |
bbefb8dd MD |
1373 | if (ret) |
1374 | goto error; | |
1375 | break; | |
989c73bc | 1376 | case O_RDWR: |
3394d22e | 1377 | fprintf(stderr, "[error] Opening CTF traces for output is not supported yet.\n"); |
46322b33 | 1378 | goto error; |
bbefb8dd | 1379 | default: |
3394d22e | 1380 | fprintf(stderr, "[error] Incorrect open flags.\n"); |
bbefb8dd MD |
1381 | goto error; |
1382 | } | |
1383 | ||
46322b33 | 1384 | return &td->parent; |
bbefb8dd MD |
1385 | error: |
1386 | g_free(td); | |
1387 | return NULL; | |
1388 | } | |
1389 | ||
f571dfb1 JD |
1390 | |
1391 | void ctf_init_mmap_pos(struct ctf_stream_pos *pos, | |
1392 | struct mmap_stream *mmap_info) | |
1393 | { | |
1394 | pos->mmap_offset = 0; | |
1395 | pos->packet_size = 0; | |
1396 | pos->content_size = 0; | |
1397 | pos->content_size_loc = NULL; | |
1398 | pos->fd = mmap_info->fd; | |
1399 | pos->base = 0; | |
1400 | pos->offset = 0; | |
1401 | pos->dummy = false; | |
1402 | pos->cur_index = 0; | |
1403 | pos->packet_index = NULL; | |
1404 | pos->prot = PROT_READ; | |
1405 | pos->flags = MAP_PRIVATE; | |
1406 | pos->parent.rw_table = read_dispatch_table; | |
1407 | pos->parent.event_cb = ctf_read_event; | |
1408 | } | |
1409 | ||
1410 | static | |
1411 | int prepare_mmap_stream_definition(struct ctf_trace *td, | |
1412 | struct ctf_file_stream *file_stream) | |
1413 | { | |
1414 | struct ctf_stream_class *stream; | |
1415 | uint64_t stream_id = 0; | |
1416 | int ret; | |
1417 | ||
1418 | file_stream->parent.stream_id = stream_id; | |
1419 | if (stream_id >= td->streams->len) { | |
3394d22e | 1420 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared " |
f571dfb1 JD |
1421 | "in metadata.\n", stream_id); |
1422 | ret = -EINVAL; | |
1423 | goto end; | |
1424 | } | |
1425 | stream = g_ptr_array_index(td->streams, stream_id); | |
1426 | if (!stream) { | |
3394d22e | 1427 | fprintf(stderr, "[error] Stream %" PRIu64 " is not declared " |
f571dfb1 JD |
1428 | "in metadata.\n", stream_id); |
1429 | ret = -EINVAL; | |
1430 | goto end; | |
1431 | } | |
1432 | file_stream->parent.stream_class = stream; | |
1433 | ret = create_stream_definitions(td, &file_stream->parent); | |
1434 | end: | |
1435 | return ret; | |
1436 | } | |
1437 | ||
1438 | static | |
1439 | int ctf_open_mmap_stream_read(struct ctf_trace *td, | |
1440 | struct mmap_stream *mmap_info, | |
1441 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, | |
1442 | int whence)) | |
1443 | { | |
1444 | int ret; | |
1445 | struct ctf_file_stream *file_stream; | |
1446 | ||
1447 | file_stream = g_new0(struct ctf_file_stream, 1); | |
1448 | ctf_init_mmap_pos(&file_stream->pos, mmap_info); | |
1449 | ||
1450 | file_stream->pos.move_pos_slow = move_pos_slow; | |
1451 | ||
1452 | ret = create_trace_definitions(td, &file_stream->parent); | |
1453 | if (ret) { | |
1454 | goto error_def; | |
1455 | } | |
1456 | ||
1457 | ret = prepare_mmap_stream_definition(td, file_stream); | |
1458 | if (ret) | |
1459 | goto error_index; | |
1460 | ||
1461 | /* Add stream file to stream class */ | |
1462 | g_ptr_array_add(file_stream->parent.stream_class->streams, | |
1463 | &file_stream->parent); | |
1464 | return 0; | |
1465 | ||
1466 | error_index: | |
1467 | if (file_stream->parent.trace_packet_header) | |
1468 | definition_unref(&file_stream->parent.trace_packet_header->p); | |
1469 | error_def: | |
1470 | g_free(file_stream); | |
1471 | return ret; | |
1472 | } | |
1473 | ||
1474 | int ctf_open_mmap_trace_read(struct ctf_trace *td, | |
1475 | struct mmap_stream_list *mmap_list, | |
1476 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, | |
1477 | int whence), | |
1478 | FILE *metadata_fp) | |
1479 | { | |
1480 | int ret; | |
1481 | struct mmap_stream *mmap_info; | |
1482 | ||
1483 | ret = ctf_open_trace_metadata_read(td, ctf_move_pos_slow, metadata_fp); | |
1484 | if (ret) { | |
1485 | goto error; | |
1486 | } | |
1487 | ||
1488 | /* | |
1489 | * for each stream, try to open, check magic number, and get the | |
1490 | * stream ID to add to the right location in the stream array. | |
1491 | */ | |
1492 | cds_list_for_each_entry(mmap_info, &mmap_list->head, list) { | |
1493 | ret = ctf_open_mmap_stream_read(td, mmap_info, move_pos_slow); | |
1494 | if (ret) { | |
3394d22e | 1495 | fprintf(stderr, "[error] Open file mmap stream error.\n"); |
f571dfb1 JD |
1496 | goto error; |
1497 | } | |
1498 | } | |
1499 | ||
1500 | return 0; | |
1501 | ||
1502 | error: | |
1503 | return ret; | |
1504 | } | |
1505 | ||
1506 | static | |
1507 | struct trace_descriptor *ctf_open_mmap_trace( | |
1508 | struct mmap_stream_list *mmap_list, | |
1509 | void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset, int whence), | |
1510 | FILE *metadata_fp) | |
1511 | { | |
1512 | struct ctf_trace *td; | |
1513 | int ret; | |
1514 | ||
1515 | if (!metadata_fp) { | |
1516 | fprintf(stderr, "[error] No metadata file pointer associated, " | |
1517 | "required for mmap parsing\n"); | |
1518 | goto error; | |
1519 | } | |
1520 | if (!move_pos_slow) { | |
1521 | fprintf(stderr, "[error] move_pos_slow function undefined.\n"); | |
1522 | goto error; | |
1523 | } | |
1524 | td = g_new0(struct ctf_trace, 1); | |
1525 | ret = ctf_open_mmap_trace_read(td, mmap_list, move_pos_slow, metadata_fp); | |
1526 | if (ret) | |
1527 | goto error_free; | |
1528 | ||
1529 | return &td->parent; | |
1530 | ||
1531 | error_free: | |
1532 | g_free(td); | |
1533 | error: | |
1534 | return NULL; | |
1535 | } | |
1536 | ||
0f980a35 MD |
1537 | static |
1538 | void ctf_close_file_stream(struct ctf_file_stream *file_stream) | |
1539 | { | |
46322b33 | 1540 | ctf_fini_pos(&file_stream->pos); |
0f980a35 MD |
1541 | close(file_stream->pos.fd); |
1542 | } | |
1543 | ||
e9378815 | 1544 | static |
46322b33 | 1545 | void ctf_close_trace(struct trace_descriptor *tdp) |
bbefb8dd | 1546 | { |
46322b33 | 1547 | struct ctf_trace *td = container_of(tdp, struct ctf_trace, parent); |
0f980a35 MD |
1548 | int i; |
1549 | ||
46322b33 MD |
1550 | if (td->streams) { |
1551 | for (i = 0; i < td->streams->len; i++) { | |
aa6bffae | 1552 | struct ctf_stream_class *stream; |
0f980a35 | 1553 | int j; |
e9378815 | 1554 | |
46322b33 | 1555 | stream = g_ptr_array_index(td->streams, i); |
e9378815 MD |
1556 | if (!stream) |
1557 | continue; | |
2d0bea29 | 1558 | for (j = 0; j < stream->streams->len; j++) { |
0f980a35 | 1559 | struct ctf_file_stream *file_stream; |
2d0bea29 | 1560 | file_stream = container_of(g_ptr_array_index(stream->streams, j), struct ctf_file_stream, parent); |
0f980a35 MD |
1561 | ctf_close_file_stream(file_stream); |
1562 | } | |
1563 | ||
1564 | } | |
46322b33 | 1565 | g_ptr_array_free(td->streams, TRUE); |
0f980a35 | 1566 | } |
46322b33 | 1567 | closedir(td->dir); |
bbefb8dd MD |
1568 | g_free(td); |
1569 | } | |
1570 | ||
7fb21036 | 1571 | void __attribute__((constructor)) ctf_init(void) |
fc93b2bd MD |
1572 | { |
1573 | int ret; | |
1574 | ||
4c8bfb7e | 1575 | ctf_format.name = g_quark_from_static_string("ctf"); |
fc93b2bd MD |
1576 | ret = bt_register_format(&ctf_format); |
1577 | assert(!ret); | |
1578 | } | |
698f0fe4 MD |
1579 | |
1580 | /* TODO: finalize */ |