Commit | Line | Data |
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e98a2d6e | 1 | /* |
94cf822e | 2 | * Copyright 2016-2017 - Philippe Proulx <pproulx@efficios.com> |
fc9a526c | 3 | * Copyright 2016 - Jérémie Galarneau <jeremie.galarneau@efficios.com> |
e98a2d6e PP |
4 | * Copyright 2010-2011 - EfficiOS Inc. and Linux Foundation |
5 | * | |
e98a2d6e PP |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
22 | * SOFTWARE. | |
23 | */ | |
24 | ||
0fbb9a9f | 25 | #include <stdlib.h> |
e98a2d6e PP |
26 | #include <stdio.h> |
27 | #include <stdint.h> | |
28 | #include <stdlib.h> | |
29 | #include <stdbool.h> | |
30 | #include <glib.h> | |
31 | #include <inttypes.h> | |
32 | #include <sys/mman.h> | |
33 | #include <babeltrace/ctf-ir/stream.h> | |
b2e0c907 | 34 | #include <babeltrace/graph/notification-iterator.h> |
4f1f88a6 PP |
35 | #include <babeltrace/graph/notification-stream.h> |
36 | #include <babeltrace/graph/notification-event.h> | |
37 | #include <babeltrace/graph/notification-packet.h> | |
78586d8a JG |
38 | #include "file.h" |
39 | #include "metadata.h" | |
40 | #include "../common/notif-iter/notif-iter.h" | |
41 | #include <assert.h> | |
94cf822e | 42 | #include "data-stream-file.h" |
e98a2d6e PP |
43 | |
44 | #define PRINT_ERR_STREAM ctf_fs->error_fp | |
45 | #define PRINT_PREFIX "ctf-fs-data-stream" | |
cd00e1d3 MD |
46 | #define PRINT_DBG_CHECK ctf_fs_debug |
47 | #include "../print.h" | |
e98a2d6e | 48 | |
4f1f88a6 | 49 | static inline |
94cf822e | 50 | size_t remaining_mmap_bytes(struct ctf_fs_ds_file *ds_file) |
e98a2d6e | 51 | { |
94cf822e | 52 | return ds_file->mmap_valid_len - ds_file->request_offset; |
e98a2d6e PP |
53 | } |
54 | ||
5b29e799 | 55 | static |
94cf822e | 56 | int ds_file_munmap(struct ctf_fs_ds_file *ds_file) |
e98a2d6e | 57 | { |
fc9a526c | 58 | int ret = 0; |
d238196d | 59 | struct ctf_fs_component *ctf_fs; |
e98a2d6e | 60 | |
d238196d | 61 | if (!ds_file || !ds_file->mmap_addr) { |
94cf822e PP |
62 | goto end; |
63 | } | |
64 | ||
d238196d | 65 | ctf_fs = ds_file->file->ctf_fs; |
94cf822e | 66 | if (munmap(ds_file->mmap_addr, ds_file->mmap_len)) { |
e98a2d6e | 67 | PERR("Cannot memory-unmap address %p (size %zu) of file \"%s\" (%p): %s\n", |
94cf822e PP |
68 | ds_file->mmap_addr, ds_file->mmap_len, |
69 | ds_file->file->path->str, ds_file->file->fp, | |
e98a2d6e | 70 | strerror(errno)); |
fc9a526c JG |
71 | ret = -1; |
72 | goto end; | |
e98a2d6e | 73 | } |
94cf822e PP |
74 | |
75 | ds_file->mmap_addr = NULL; | |
76 | ||
fc9a526c JG |
77 | end: |
78 | return ret; | |
e98a2d6e PP |
79 | } |
80 | ||
5b29e799 | 81 | static |
94cf822e PP |
82 | enum bt_ctf_notif_iter_medium_status ds_file_mmap_next( |
83 | struct ctf_fs_ds_file *ds_file) | |
e98a2d6e | 84 | { |
e0f6a64a JG |
85 | enum bt_ctf_notif_iter_medium_status ret = |
86 | BT_CTF_NOTIF_ITER_MEDIUM_STATUS_OK; | |
94cf822e | 87 | struct ctf_fs_component *ctf_fs = ds_file->file->ctf_fs; |
e98a2d6e PP |
88 | |
89 | /* Unmap old region */ | |
94cf822e PP |
90 | if (ds_file->mmap_addr) { |
91 | if (ds_file_munmap(ds_file)) { | |
e98a2d6e PP |
92 | goto error; |
93 | } | |
94 | ||
94cf822e PP |
95 | ds_file->mmap_offset += ds_file->mmap_valid_len; |
96 | ds_file->request_offset = 0; | |
e98a2d6e PP |
97 | } |
98 | ||
94cf822e PP |
99 | ds_file->mmap_valid_len = MIN(ds_file->file->size - ds_file->mmap_offset, |
100 | ds_file->mmap_max_len); | |
101 | if (ds_file->mmap_valid_len == 0) { | |
e0f6a64a JG |
102 | ret = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_EOF; |
103 | goto end; | |
104 | } | |
fc9a526c | 105 | /* Round up to next page, assuming page size being a power of 2. */ |
94cf822e | 106 | ds_file->mmap_len = (ds_file->mmap_valid_len + ctf_fs->page_size - 1) |
fc9a526c | 107 | & ~(ctf_fs->page_size - 1); |
e98a2d6e | 108 | /* Map new region */ |
94cf822e PP |
109 | assert(ds_file->mmap_len); |
110 | ds_file->mmap_addr = mmap((void *) 0, ds_file->mmap_len, | |
111 | PROT_READ, MAP_PRIVATE, fileno(ds_file->file->fp), | |
112 | ds_file->mmap_offset); | |
113 | if (ds_file->mmap_addr == MAP_FAILED) { | |
e98a2d6e | 114 | PERR("Cannot memory-map address (size %zu) of file \"%s\" (%p) at offset %zu: %s\n", |
94cf822e PP |
115 | ds_file->mmap_len, ds_file->file->path->str, |
116 | ds_file->file->fp, ds_file->mmap_offset, | |
78586d8a | 117 | strerror(errno)); |
e98a2d6e PP |
118 | goto error; |
119 | } | |
120 | ||
121 | goto end; | |
e98a2d6e | 122 | error: |
94cf822e | 123 | ds_file_munmap(ds_file); |
e0f6a64a | 124 | ret = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_ERROR; |
e98a2d6e PP |
125 | end: |
126 | return ret; | |
127 | } | |
128 | ||
5b29e799 JG |
129 | static |
130 | enum bt_ctf_notif_iter_medium_status medop_request_bytes( | |
e98a2d6e PP |
131 | size_t request_sz, uint8_t **buffer_addr, |
132 | size_t *buffer_sz, void *data) | |
133 | { | |
134 | enum bt_ctf_notif_iter_medium_status status = | |
135 | BT_CTF_NOTIF_ITER_MEDIUM_STATUS_OK; | |
94cf822e PP |
136 | struct ctf_fs_ds_file *ds_file = data; |
137 | struct ctf_fs_component *ctf_fs = ds_file->file->ctf_fs; | |
e98a2d6e PP |
138 | |
139 | if (request_sz == 0) { | |
140 | goto end; | |
141 | } | |
142 | ||
e98a2d6e | 143 | /* Check if we have at least one memory-mapped byte left */ |
94cf822e | 144 | if (remaining_mmap_bytes(ds_file) == 0) { |
e98a2d6e | 145 | /* Are we at the end of the file? */ |
94cf822e | 146 | if (ds_file->mmap_offset >= ds_file->file->size) { |
e98a2d6e | 147 | PDBG("Reached end of file \"%s\" (%p)\n", |
94cf822e | 148 | ds_file->file->path->str, ds_file->file->fp); |
e98a2d6e PP |
149 | status = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_EOF; |
150 | goto end; | |
151 | } | |
152 | ||
94cf822e | 153 | status = ds_file_mmap_next(ds_file); |
e0f6a64a JG |
154 | switch (status) { |
155 | case BT_CTF_NOTIF_ITER_MEDIUM_STATUS_OK: | |
156 | break; | |
157 | case BT_CTF_NOTIF_ITER_MEDIUM_STATUS_EOF: | |
158 | goto end; | |
159 | default: | |
e98a2d6e | 160 | PERR("Cannot memory-map next region of file \"%s\" (%p)\n", |
94cf822e PP |
161 | ds_file->file->path->str, |
162 | ds_file->file->fp); | |
e98a2d6e PP |
163 | goto error; |
164 | } | |
165 | } | |
166 | ||
94cf822e PP |
167 | *buffer_sz = MIN(remaining_mmap_bytes(ds_file), request_sz); |
168 | *buffer_addr = ((uint8_t *) ds_file->mmap_addr) + ds_file->request_offset; | |
169 | ds_file->request_offset += *buffer_sz; | |
e98a2d6e PP |
170 | goto end; |
171 | ||
172 | error: | |
173 | status = BT_CTF_NOTIF_ITER_MEDIUM_STATUS_ERROR; | |
174 | ||
175 | end: | |
176 | return status; | |
177 | } | |
178 | ||
5b29e799 JG |
179 | static |
180 | struct bt_ctf_stream *medop_get_stream( | |
e98a2d6e PP |
181 | struct bt_ctf_stream_class *stream_class, void *data) |
182 | { | |
94cf822e PP |
183 | struct ctf_fs_ds_file *ds_file = data; |
184 | struct bt_ctf_stream_class *ds_file_stream_class; | |
185 | struct bt_ctf_stream *stream = NULL; | |
186 | ||
187 | ds_file_stream_class = bt_ctf_stream_get_class(ds_file->stream); | |
188 | bt_put(ds_file_stream_class); | |
189 | ||
190 | if (stream_class != ds_file_stream_class) { | |
191 | /* | |
192 | * Not supported: two packets described by two different | |
193 | * stream classes within the same data stream file. | |
194 | */ | |
195 | goto end; | |
e98a2d6e PP |
196 | } |
197 | ||
94cf822e PP |
198 | stream = ds_file->stream; |
199 | ||
200 | end: | |
201 | return stream; | |
e98a2d6e PP |
202 | } |
203 | ||
204 | static struct bt_ctf_notif_iter_medium_ops medops = { | |
205 | .request_bytes = medop_request_bytes, | |
206 | .get_stream = medop_get_stream, | |
207 | }; | |
208 | ||
b6c3dcb2 | 209 | static |
94cf822e | 210 | int build_index_from_idx_file(struct ctf_fs_ds_file *ds_file) |
b6c3dcb2 JG |
211 | { |
212 | int ret = 0; | |
213 | gchar *directory = NULL; | |
214 | gchar *basename = NULL; | |
215 | GString *index_basename = NULL; | |
216 | gchar *index_file_path = NULL; | |
217 | GMappedFile *mapped_file = NULL; | |
218 | gsize filesize; | |
219 | const struct ctf_packet_index_file_hdr *header; | |
220 | const char *mmap_begin, *file_pos; | |
221 | struct index_entry *index; | |
222 | uint64_t total_packets_size = 0; | |
223 | size_t file_index_entry_size; | |
224 | size_t file_entry_count; | |
225 | size_t i; | |
226 | ||
227 | /* Look for index file in relative path index/name.idx. */ | |
94cf822e | 228 | basename = g_path_get_basename(ds_file->file->path->str); |
b6c3dcb2 JG |
229 | if (!basename) { |
230 | ret = -1; | |
231 | goto end; | |
232 | } | |
233 | ||
94cf822e | 234 | directory = g_path_get_dirname(ds_file->file->path->str); |
b6c3dcb2 JG |
235 | if (!directory) { |
236 | ret = -1; | |
237 | goto end; | |
238 | } | |
239 | ||
240 | index_basename = g_string_new(basename); | |
241 | if (!index_basename) { | |
242 | ret = -1; | |
243 | goto end; | |
244 | } | |
245 | ||
246 | g_string_append(index_basename, ".idx"); | |
247 | index_file_path = g_build_filename(directory, "index", | |
248 | index_basename->str, NULL); | |
249 | mapped_file = g_mapped_file_new(index_file_path, FALSE, NULL); | |
06367fa3 JG |
250 | if (!mapped_file) { |
251 | ret = -1; | |
252 | goto end; | |
253 | } | |
b6c3dcb2 JG |
254 | filesize = g_mapped_file_get_length(mapped_file); |
255 | if (filesize < sizeof(*header)) { | |
256 | printf_error("Invalid LTTng trace index: file size < header size"); | |
257 | ret = -1; | |
258 | goto end; | |
259 | } | |
260 | ||
261 | mmap_begin = g_mapped_file_get_contents(mapped_file); | |
262 | header = (struct ctf_packet_index_file_hdr *) mmap_begin; | |
263 | ||
264 | file_pos = g_mapped_file_get_contents(mapped_file) + sizeof(*header); | |
265 | if (be32toh(header->magic) != CTF_INDEX_MAGIC) { | |
266 | printf_error("Invalid LTTng trace index: \"magic\" validation failed"); | |
267 | ret = -1; | |
268 | goto end; | |
269 | } | |
b6c3dcb2 JG |
270 | |
271 | file_index_entry_size = be32toh(header->packet_index_len); | |
272 | file_entry_count = (filesize - sizeof(*header)) / file_index_entry_size; | |
273 | if ((filesize - sizeof(*header)) % (file_entry_count * file_index_entry_size)) { | |
274 | printf_error("Invalid index file size; not a multiple of index entry size"); | |
275 | ret = -1; | |
276 | goto end; | |
277 | } | |
278 | ||
94cf822e | 279 | ds_file->index.entries = g_array_sized_new(FALSE, TRUE, |
b6c3dcb2 | 280 | sizeof(struct index_entry), file_entry_count); |
94cf822e | 281 | if (!ds_file->index.entries) { |
b6c3dcb2 JG |
282 | ret = -1; |
283 | goto end; | |
284 | } | |
94cf822e | 285 | index = (struct index_entry *) ds_file->index.entries->data; |
b6c3dcb2 JG |
286 | for (i = 0; i < file_entry_count; i++) { |
287 | struct ctf_packet_index *file_index = | |
288 | (struct ctf_packet_index *) file_pos; | |
289 | uint64_t packet_size = be64toh(file_index->packet_size); | |
290 | ||
291 | if (packet_size % CHAR_BIT) { | |
292 | ret = -1; | |
293 | printf_error("Invalid packet size encountered in index file"); | |
294 | goto invalid_index; | |
295 | } | |
296 | ||
297 | /* Convert size in bits to bytes. */ | |
298 | packet_size /= CHAR_BIT; | |
299 | index->packet_size = packet_size; | |
300 | ||
301 | index->offset = be64toh(file_index->offset); | |
302 | if (i != 0 && index->offset < (index - 1)->offset) { | |
303 | printf_error("Invalid, non-monotonic, packet offset encountered in index file"); | |
304 | ret = -1; | |
305 | goto invalid_index; | |
306 | } | |
307 | ||
308 | index->timestamp_begin = be64toh(file_index->timestamp_begin); | |
309 | index->timestamp_end = be64toh(file_index->timestamp_end); | |
310 | if (index->timestamp_end < index->timestamp_begin) { | |
311 | printf_error("Invalid packet time bounds encountered in index file"); | |
312 | ret = -1; | |
313 | goto invalid_index; | |
314 | } | |
315 | ||
316 | total_packets_size += packet_size; | |
317 | file_pos += file_index_entry_size; | |
318 | index++; | |
319 | } | |
320 | ||
321 | /* Validate that the index addresses the complete stream. */ | |
94cf822e | 322 | if (ds_file->file->size != total_packets_size) { |
b6c3dcb2 JG |
323 | printf_error("Invalid index; indexed size != stream file size"); |
324 | ret = -1; | |
325 | goto invalid_index; | |
326 | } | |
327 | end: | |
328 | g_free(directory); | |
329 | g_free(basename); | |
330 | g_free(index_file_path); | |
06367fa3 JG |
331 | if (index_basename) { |
332 | g_string_free(index_basename, TRUE); | |
333 | } | |
334 | if (mapped_file) { | |
335 | g_mapped_file_unref(mapped_file); | |
336 | } | |
b6c3dcb2 JG |
337 | return ret; |
338 | invalid_index: | |
94cf822e | 339 | g_array_free(ds_file->index.entries, TRUE); |
b6c3dcb2 JG |
340 | goto end; |
341 | } | |
342 | ||
343 | static | |
94cf822e | 344 | int build_index_from_data_stream_file(struct ctf_fs_ds_file *stream) |
b6c3dcb2 | 345 | { |
4f1f88a6 | 346 | return 0; |
b6c3dcb2 JG |
347 | } |
348 | ||
349 | static | |
94cf822e | 350 | int init_stream_index(struct ctf_fs_ds_file *ds_file) |
b6c3dcb2 JG |
351 | { |
352 | int ret; | |
353 | ||
94cf822e | 354 | ret = build_index_from_idx_file(ds_file); |
b6c3dcb2 JG |
355 | if (!ret) { |
356 | goto end; | |
357 | } | |
358 | ||
94cf822e | 359 | ret = build_index_from_data_stream_file(ds_file); |
b6c3dcb2 JG |
360 | end: |
361 | return ret; | |
362 | } | |
363 | ||
e7a4393b | 364 | BT_HIDDEN |
94cf822e PP |
365 | struct ctf_fs_ds_file *ctf_fs_ds_file_create( |
366 | struct ctf_fs_trace *ctf_fs_trace, | |
367 | struct bt_ctf_stream *stream, const char *path, | |
368 | bool build_index) | |
e98a2d6e | 369 | { |
b6c3dcb2 | 370 | int ret; |
94cf822e | 371 | struct ctf_fs_ds_file *ds_file = g_new0(struct ctf_fs_ds_file, 1); |
e98a2d6e | 372 | |
94cf822e | 373 | if (!ds_file) { |
e98a2d6e PP |
374 | goto error; |
375 | } | |
376 | ||
94cf822e PP |
377 | ds_file->file = ctf_fs_file_create(ctf_fs_trace->ctf_fs); |
378 | if (!ds_file->file) { | |
4f1f88a6 PP |
379 | goto error; |
380 | } | |
381 | ||
94cf822e PP |
382 | ds_file->stream = bt_get(stream); |
383 | ds_file->cc_prio_map = bt_get(ctf_fs_trace->cc_prio_map); | |
384 | g_string_assign(ds_file->file->path, path); | |
385 | ret = ctf_fs_file_open(ctf_fs_trace->ctf_fs, ds_file->file, "rb"); | |
4f1f88a6 PP |
386 | if (ret) { |
387 | goto error; | |
388 | } | |
389 | ||
94cf822e | 390 | ds_file->notif_iter = bt_ctf_notif_iter_create( |
1a9f7075 | 391 | ctf_fs_trace->metadata->trace, |
94cf822e | 392 | ctf_fs_trace->ctf_fs->page_size, medops, ds_file, |
1a9f7075 | 393 | ctf_fs_trace->ctf_fs->error_fp); |
94cf822e | 394 | if (!ds_file->notif_iter) { |
e98a2d6e PP |
395 | goto error; |
396 | } | |
5b29e799 | 397 | |
94cf822e PP |
398 | ds_file->mmap_max_len = ctf_fs_trace->ctf_fs->page_size * 2048; |
399 | ||
400 | if (build_index) { | |
401 | ret = init_stream_index(ds_file); | |
402 | if (ret) { | |
403 | goto error; | |
404 | } | |
b6c3dcb2 | 405 | } |
1a9f7075 | 406 | |
e98a2d6e | 407 | goto end; |
1a9f7075 | 408 | |
e98a2d6e | 409 | error: |
78586d8a | 410 | /* Do not touch "borrowed" file. */ |
94cf822e PP |
411 | ctf_fs_ds_file_destroy(ds_file); |
412 | ds_file = NULL; | |
1a9f7075 | 413 | |
e98a2d6e | 414 | end: |
94cf822e | 415 | return ds_file; |
e98a2d6e PP |
416 | } |
417 | ||
5b29e799 | 418 | BT_HIDDEN |
94cf822e | 419 | void ctf_fs_ds_file_destroy(struct ctf_fs_ds_file *ds_file) |
e98a2d6e | 420 | { |
94cf822e | 421 | if (!ds_file) { |
5b29e799 | 422 | return; |
043e2020 JG |
423 | } |
424 | ||
94cf822e PP |
425 | bt_put(ds_file->cc_prio_map); |
426 | bt_put(ds_file->stream); | |
427 | (void) ds_file_munmap(ds_file); | |
0982a26d | 428 | |
94cf822e PP |
429 | if (ds_file->file) { |
430 | ctf_fs_file_destroy(ds_file->file); | |
e98a2d6e PP |
431 | } |
432 | ||
94cf822e PP |
433 | if (ds_file->notif_iter) { |
434 | bt_ctf_notif_iter_destroy(ds_file->notif_iter); | |
043e2020 | 435 | } |
5b29e799 | 436 | |
94cf822e PP |
437 | if (ds_file->index.entries) { |
438 | g_array_free(ds_file->index.entries, TRUE); | |
78586d8a | 439 | } |
5b29e799 | 440 | |
94cf822e | 441 | g_free(ds_file); |
e98a2d6e | 442 | } |
4f1f88a6 PP |
443 | |
444 | BT_HIDDEN | |
94cf822e PP |
445 | struct bt_notification_iterator_next_return ctf_fs_ds_file_next( |
446 | struct ctf_fs_ds_file *ds_file) | |
4f1f88a6 PP |
447 | { |
448 | enum bt_ctf_notif_iter_status notif_iter_status; | |
449 | struct bt_notification_iterator_next_return ret = { | |
450 | .status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR, | |
451 | .notification = NULL, | |
452 | }; | |
453 | ||
8915b7a7 | 454 | notif_iter_status = bt_ctf_notif_iter_get_next_notification( |
94cf822e | 455 | ds_file->notif_iter, ds_file->cc_prio_map, &ret.notification); |
4f1f88a6 | 456 | |
4f1f88a6 PP |
457 | switch (notif_iter_status) { |
458 | case BT_CTF_NOTIF_ITER_STATUS_EOF: | |
459 | ret.status = BT_NOTIFICATION_ITERATOR_STATUS_END; | |
460 | break; | |
461 | case BT_CTF_NOTIF_ITER_STATUS_OK: | |
462 | ret.status = BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
463 | break; | |
464 | case BT_CTF_NOTIF_ITER_STATUS_AGAIN: | |
465 | /* | |
466 | * Should not make it this far as this is | |
467 | * medium-specific; there is nothing for the user to do | |
468 | * and it should have been handled upstream. | |
469 | */ | |
0fbb9a9f | 470 | abort(); |
4f1f88a6 PP |
471 | case BT_CTF_NOTIF_ITER_STATUS_INVAL: |
472 | case BT_CTF_NOTIF_ITER_STATUS_ERROR: | |
473 | default: | |
474 | ret.status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; | |
475 | break; | |
476 | } | |
477 | ||
478 | return ret; | |
479 | } | |
94cf822e PP |
480 | |
481 | BT_HIDDEN | |
482 | int ctf_fs_ds_file_get_packet_header_context_fields( | |
483 | struct ctf_fs_trace *ctf_fs_trace, const char *path, | |
484 | struct bt_ctf_field **packet_header_field, | |
485 | struct bt_ctf_field **packet_context_field) | |
486 | { | |
487 | enum bt_ctf_notif_iter_status notif_iter_status; | |
488 | struct ctf_fs_ds_file *ds_file; | |
489 | int ret = 0; | |
490 | ||
491 | ds_file = ctf_fs_ds_file_create(ctf_fs_trace, NULL, path, false); | |
492 | if (!ds_file) { | |
493 | goto error; | |
494 | } | |
495 | ||
496 | notif_iter_status = bt_ctf_notif_iter_get_packet_header_context_fields( | |
497 | ds_file->notif_iter, packet_header_field, packet_context_field); | |
498 | switch (notif_iter_status) { | |
499 | case BT_CTF_NOTIF_ITER_STATUS_EOF: | |
500 | case BT_CTF_NOTIF_ITER_STATUS_OK: | |
501 | break; | |
502 | case BT_CTF_NOTIF_ITER_STATUS_AGAIN: | |
0fbb9a9f | 503 | abort(); |
94cf822e PP |
504 | case BT_CTF_NOTIF_ITER_STATUS_INVAL: |
505 | case BT_CTF_NOTIF_ITER_STATUS_ERROR: | |
506 | default: | |
507 | goto error; | |
508 | break; | |
509 | } | |
510 | ||
511 | goto end; | |
512 | ||
513 | error: | |
514 | ret = -1; | |
515 | ||
516 | if (packet_header_field) { | |
517 | bt_put(*packet_header_field); | |
518 | } | |
519 | ||
520 | if (packet_context_field) { | |
521 | bt_put(*packet_context_field); | |
522 | } | |
523 | ||
524 | end: | |
525 | ctf_fs_ds_file_destroy(ds_file); | |
526 | return ret; | |
527 | } |