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