Commit | Line | Data |
---|---|---|
7a278c8e | 1 | /* |
ea0b4b9e | 2 | * fs.c |
7a278c8e | 3 | * |
ea0b4b9e | 4 | * Babeltrace CTF file system Reader Component |
7a278c8e | 5 | * |
1a9f7075 | 6 | * Copyright 2015-2017 Philippe Proulx <pproulx@efficios.com> |
f3bc2010 | 7 | * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
7a278c8e | 8 | * |
7a278c8e JG |
9 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
10 | * of this software and associated documentation files (the "Software"), to deal | |
11 | * in the Software without restriction, including without limitation the rights | |
12 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
13 | * copies of the Software, and to permit persons to whom the Software is | |
14 | * furnished to do so, subject to the following conditions: | |
15 | * | |
16 | * The above copyright notice and this permission notice shall be included in | |
17 | * all copies or substantial portions of the Software. | |
18 | * | |
19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
22 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
23 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
24 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
25 | * SOFTWARE. | |
26 | */ | |
27 | ||
5b29e799 | 28 | #include <babeltrace/ctf-ir/packet.h> |
ac0c6bdd | 29 | #include <babeltrace/ctf-ir/clock-class.h> |
4f1f88a6 | 30 | #include <babeltrace/graph/private-port.h> |
b2e0c907 | 31 | #include <babeltrace/graph/private-component.h> |
4f1f88a6 PP |
32 | #include <babeltrace/graph/private-component-source.h> |
33 | #include <babeltrace/graph/private-notification-iterator.h> | |
b2e0c907 PP |
34 | #include <babeltrace/graph/component.h> |
35 | #include <babeltrace/graph/notification-iterator.h> | |
599faa1c | 36 | #include <babeltrace/graph/clock-class-priority-map.h> |
7d61fa8e | 37 | #include <plugins-common.h> |
ea0b4b9e JG |
38 | #include <glib.h> |
39 | #include <assert.h> | |
c55a9f58 | 40 | #include <stdbool.h> |
56a1cced JG |
41 | #include <unistd.h> |
42 | #include "fs.h" | |
413bc2c4 JG |
43 | #include "metadata.h" |
44 | #include "data-stream.h" | |
e7a4393b | 45 | #include "file.h" |
1e649dff | 46 | #include "../common/metadata/decoder.h" |
e7a4393b JG |
47 | |
48 | #define PRINT_ERR_STREAM ctf_fs->error_fp | |
49 | #define PRINT_PREFIX "ctf-fs" | |
cd00e1d3 MD |
50 | #define PRINT_DBG_CHECK ctf_fs_debug |
51 | #include "../print.h" | |
33f93973 | 52 | #define METADATA_TEXT_SIG "/* CTF 1.8" |
ea0b4b9e | 53 | |
78bb6992 MD |
54 | BT_HIDDEN |
55 | bool ctf_fs_debug; | |
ea0b4b9e | 56 | |
41a2b7ae | 57 | struct bt_notification_iterator_next_return ctf_fs_iterator_next( |
4f1f88a6 | 58 | struct bt_private_notification_iterator *iterator) |
ea0b4b9e | 59 | { |
4f1f88a6 PP |
60 | struct ctf_fs_stream *fs_stream = |
61 | bt_private_notification_iterator_get_user_data(iterator); | |
d01e0f33 | 62 | |
4f1f88a6 | 63 | return ctf_fs_stream_next(fs_stream); |
ea0b4b9e | 64 | } |
bfd20a42 | 65 | |
4f1f88a6 | 66 | void ctf_fs_iterator_finalize(struct bt_private_notification_iterator *it) |
760051fa | 67 | { |
4f1f88a6 PP |
68 | void *ctf_fs_stream = |
69 | bt_private_notification_iterator_get_user_data(it); | |
760051fa | 70 | |
4f1f88a6 | 71 | ctf_fs_stream_destroy(ctf_fs_stream); |
760051fa JG |
72 | } |
73 | ||
4f1f88a6 PP |
74 | enum bt_notification_iterator_status ctf_fs_iterator_init( |
75 | struct bt_private_notification_iterator *it, | |
76 | struct bt_private_port *port) | |
4c1456f0 | 77 | { |
1a9f7075 | 78 | struct ctf_fs_stream *ctf_fs_stream = NULL; |
4f1f88a6 | 79 | struct ctf_fs_port_data *port_data; |
4f1f88a6 PP |
80 | enum bt_notification_iterator_status ret = |
81 | BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
760051fa | 82 | |
4f1f88a6 PP |
83 | port_data = bt_private_port_get_user_data(port); |
84 | if (!port_data) { | |
fe8ad2b6 | 85 | ret = BT_NOTIFICATION_ITERATOR_STATUS_INVALID; |
4f1f88a6 PP |
86 | goto error; |
87 | } | |
5b29e799 | 88 | |
1a9f7075 PP |
89 | ctf_fs_stream = ctf_fs_stream_create(port_data->ctf_fs_trace, |
90 | port_data->path->str); | |
91 | if (!ctf_fs_stream) { | |
4f1f88a6 | 92 | goto error; |
760051fa JG |
93 | } |
94 | ||
1a9f7075 | 95 | ret = bt_private_notification_iterator_set_user_data(it, ctf_fs_stream); |
4f1f88a6 PP |
96 | if (ret) { |
97 | goto error; | |
760051fa JG |
98 | } |
99 | ||
1a9f7075 | 100 | ctf_fs_stream = NULL; |
4f1f88a6 | 101 | goto end; |
5b29e799 | 102 | |
4f1f88a6 PP |
103 | error: |
104 | (void) bt_private_notification_iterator_set_user_data(it, NULL); | |
105 | ||
106 | if (ret == BT_NOTIFICATION_ITERATOR_STATUS_OK) { | |
107 | ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; | |
760051fa | 108 | } |
5b29e799 | 109 | |
760051fa | 110 | end: |
1a9f7075 | 111 | ctf_fs_stream_destroy(ctf_fs_stream); |
760051fa JG |
112 | return ret; |
113 | } | |
114 | ||
760051fa | 115 | static |
1a9f7075 | 116 | void ctf_fs_destroy(struct ctf_fs_component *ctf_fs) |
760051fa | 117 | { |
4f1f88a6 | 118 | if (!ctf_fs) { |
8fa760ba JG |
119 | return; |
120 | } | |
4f1f88a6 | 121 | |
1a9f7075 PP |
122 | if (ctf_fs->traces) { |
123 | g_ptr_array_free(ctf_fs->traces, TRUE); | |
56a1cced | 124 | } |
4f1f88a6 PP |
125 | |
126 | if (ctf_fs->port_data) { | |
127 | g_ptr_array_free(ctf_fs->port_data, TRUE); | |
c14d7e26 | 128 | } |
760051fa | 129 | |
1a9f7075 PP |
130 | g_free(ctf_fs); |
131 | } | |
132 | ||
133 | static | |
134 | void ctf_fs_trace_destroy(void *data) | |
135 | { | |
136 | struct ctf_fs_trace *ctf_fs_trace = data; | |
137 | ||
138 | if (!ctf_fs_trace) { | |
139 | return; | |
140 | } | |
141 | ||
142 | if (ctf_fs_trace->path) { | |
143 | g_string_free(ctf_fs_trace->path, TRUE); | |
4f1f88a6 | 144 | } |
760051fa | 145 | |
1a9f7075 PP |
146 | if (ctf_fs_trace->name) { |
147 | g_string_free(ctf_fs_trace->name, TRUE); | |
148 | } | |
149 | ||
150 | if (ctf_fs_trace->metadata) { | |
151 | ctf_fs_metadata_fini(ctf_fs_trace->metadata); | |
152 | g_free(ctf_fs_trace->metadata); | |
153 | } | |
154 | ||
155 | bt_put(ctf_fs_trace->cc_prio_map); | |
156 | g_free(ctf_fs_trace); | |
4c1456f0 JG |
157 | } |
158 | ||
4f1f88a6 | 159 | void ctf_fs_finalize(struct bt_private_component *component) |
a4792757 | 160 | { |
4f1f88a6 PP |
161 | void *data = bt_private_component_get_user_data(component); |
162 | ||
1a9f7075 | 163 | ctf_fs_destroy(data); |
a4792757 JG |
164 | } |
165 | ||
e7a4393b | 166 | static |
4f1f88a6 PP |
167 | void port_data_destroy(void *data) { |
168 | struct ctf_fs_port_data *port_data = data; | |
169 | ||
170 | if (!port_data) { | |
171 | return; | |
172 | } | |
173 | ||
174 | if (port_data->path) { | |
175 | g_string_free(port_data->path, TRUE); | |
176 | } | |
177 | ||
178 | g_free(port_data); | |
5b29e799 JG |
179 | } |
180 | ||
181 | static | |
1a9f7075 PP |
182 | int create_one_port_for_trace(struct ctf_fs_trace *ctf_fs_trace, |
183 | const char *stream_path) | |
5b29e799 | 184 | { |
4f1f88a6 PP |
185 | int ret = 0; |
186 | struct bt_private_port *port = NULL; | |
187 | struct ctf_fs_port_data *port_data = NULL; | |
188 | GString *port_name = NULL; | |
1a9f7075 | 189 | struct ctf_fs_component *ctf_fs = ctf_fs_trace->ctf_fs; |
4f1f88a6 PP |
190 | |
191 | port_name = g_string_new(NULL); | |
192 | if (!port_name) { | |
193 | goto error; | |
194 | } | |
195 | ||
196 | /* Assign the name for the new output port */ | |
1a9f7075 PP |
197 | g_string_printf(port_name, "%s", stream_path); |
198 | PDBG("Creating one port named `%s`\n", port_name->str); | |
4f1f88a6 PP |
199 | |
200 | /* Create output port for this file */ | |
4f1f88a6 PP |
201 | port_data = g_new0(struct ctf_fs_port_data, 1); |
202 | if (!port_data) { | |
203 | goto error; | |
204 | } | |
205 | ||
1a9f7075 | 206 | port_data->ctf_fs_trace = ctf_fs_trace; |
4f1f88a6 PP |
207 | port_data->path = g_string_new(stream_path); |
208 | if (!port_data->path) { | |
209 | goto error; | |
210 | } | |
211 | ||
3e9b0023 PP |
212 | port = bt_private_component_source_add_output_private_port( |
213 | ctf_fs->priv_comp, port_name->str, port_data); | |
214 | if (!port) { | |
4f1f88a6 PP |
215 | goto error; |
216 | } | |
217 | ||
218 | g_ptr_array_add(ctf_fs->port_data, port_data); | |
219 | port_data = NULL; | |
220 | goto end; | |
221 | ||
222 | error: | |
223 | ret = -1; | |
224 | ||
225 | end: | |
226 | if (port_name) { | |
227 | g_string_free(port_name, TRUE); | |
228 | } | |
229 | ||
230 | bt_put(port); | |
231 | port_data_destroy(port_data); | |
232 | return ret; | |
5b29e799 JG |
233 | } |
234 | ||
235 | static | |
1a9f7075 | 236 | int create_ports_for_trace(struct ctf_fs_trace *ctf_fs_trace) |
e7a4393b JG |
237 | { |
238 | int ret = 0; | |
4f1f88a6 | 239 | const char *basename; |
e7a4393b | 240 | GError *error = NULL; |
4f1f88a6 | 241 | GDir *dir = NULL; |
4f1f88a6 | 242 | struct ctf_fs_file *file = NULL; |
1a9f7075 | 243 | struct ctf_fs_component *ctf_fs = ctf_fs_trace->ctf_fs; |
e7a4393b | 244 | |
4f1f88a6 | 245 | /* Create one output port for each stream file */ |
1a9f7075 | 246 | dir = g_dir_open(ctf_fs_trace->path->str, 0, &error); |
e7a4393b | 247 | if (!dir) { |
4f1f88a6 | 248 | PERR("Cannot open directory `%s`: %s (code %d)\n", |
1a9f7075 | 249 | ctf_fs_trace->path->str, error->message, |
4f1f88a6 | 250 | error->code); |
e7a4393b JG |
251 | goto error; |
252 | } | |
253 | ||
4f1f88a6 PP |
254 | while ((basename = g_dir_read_name(dir))) { |
255 | if (!strcmp(basename, CTF_FS_METADATA_FILENAME)) { | |
e7a4393b | 256 | /* Ignore the metadata stream. */ |
1a9f7075 PP |
257 | PDBG("Ignoring metadata file `%s/%s`\n", |
258 | ctf_fs_trace->path->str, basename); | |
e7a4393b JG |
259 | continue; |
260 | } | |
261 | ||
4f1f88a6 | 262 | if (basename[0] == '.') { |
1a9f7075 PP |
263 | PDBG("Ignoring hidden file `%s/%s`\n", |
264 | ctf_fs_trace->path->str, basename); | |
e7a4393b JG |
265 | continue; |
266 | } | |
267 | ||
268 | /* Create the file. */ | |
269 | file = ctf_fs_file_create(ctf_fs); | |
270 | if (!file) { | |
1a9f7075 PP |
271 | PERR("Cannot create stream file object for file `%s/%s`\n", |
272 | ctf_fs_trace->path->str, basename); | |
e7a4393b JG |
273 | goto error; |
274 | } | |
275 | ||
276 | /* Create full path string. */ | |
277 | g_string_append_printf(file->path, "%s/%s", | |
1a9f7075 | 278 | ctf_fs_trace->path->str, basename); |
e7a4393b | 279 | if (!g_file_test(file->path->str, G_FILE_TEST_IS_REGULAR)) { |
1a9f7075 PP |
280 | PDBG("Ignoring non-regular file `%s`\n", |
281 | file->path->str); | |
e7a4393b | 282 | ctf_fs_file_destroy(file); |
4f1f88a6 | 283 | file = NULL; |
e7a4393b JG |
284 | continue; |
285 | } | |
286 | ||
4f1f88a6 PP |
287 | ret = ctf_fs_file_open(ctf_fs, file, "rb"); |
288 | if (ret) { | |
1a9f7075 | 289 | PERR("Cannot open stream file `%s`\n", file->path->str); |
e7a4393b JG |
290 | goto error; |
291 | } | |
292 | ||
9fa0891a JG |
293 | if (file->size == 0) { |
294 | /* Skip empty stream. */ | |
1a9f7075 | 295 | PDBG("Ignoring empty file `%s`\n", file->path->str); |
9fa0891a | 296 | ctf_fs_file_destroy(file); |
4f1f88a6 | 297 | file = NULL; |
9fa0891a JG |
298 | continue; |
299 | } | |
300 | ||
1a9f7075 | 301 | ret = create_one_port_for_trace(ctf_fs_trace, file->path->str); |
4f1f88a6 PP |
302 | if (ret) { |
303 | PERR("Cannot create output port for file `%s`\n", | |
1a9f7075 | 304 | file->path->str); |
e7a4393b JG |
305 | goto error; |
306 | } | |
307 | ||
4f1f88a6 PP |
308 | ctf_fs_file_destroy(file); |
309 | file = NULL; | |
e7a4393b JG |
310 | } |
311 | ||
312 | goto end; | |
4f1f88a6 | 313 | |
e7a4393b JG |
314 | error: |
315 | ret = -1; | |
4f1f88a6 | 316 | |
e7a4393b JG |
317 | end: |
318 | if (dir) { | |
319 | g_dir_close(dir); | |
320 | dir = NULL; | |
321 | } | |
4f1f88a6 | 322 | |
e7a4393b JG |
323 | if (error) { |
324 | g_error_free(error); | |
325 | } | |
5b29e799 | 326 | |
4f1f88a6 | 327 | ctf_fs_file_destroy(file); |
91457551 | 328 | return ret; |
5b29e799 JG |
329 | } |
330 | ||
599faa1c | 331 | static |
1a9f7075 | 332 | int create_cc_prio_map(struct ctf_fs_trace *ctf_fs_trace) |
599faa1c PP |
333 | { |
334 | int ret = 0; | |
335 | size_t i; | |
336 | int count; | |
337 | ||
1a9f7075 PP |
338 | assert(ctf_fs_trace); |
339 | ctf_fs_trace->cc_prio_map = bt_clock_class_priority_map_create(); | |
340 | if (!ctf_fs_trace->cc_prio_map) { | |
599faa1c PP |
341 | ret = -1; |
342 | goto end; | |
343 | } | |
344 | ||
1a9f7075 PP |
345 | count = bt_ctf_trace_get_clock_class_count( |
346 | ctf_fs_trace->metadata->trace); | |
599faa1c PP |
347 | assert(count >= 0); |
348 | ||
349 | for (i = 0; i < count; i++) { | |
350 | struct bt_ctf_clock_class *clock_class = | |
9ac68eb1 | 351 | bt_ctf_trace_get_clock_class_by_index( |
1a9f7075 | 352 | ctf_fs_trace->metadata->trace, i); |
599faa1c PP |
353 | |
354 | assert(clock_class); | |
355 | ret = bt_clock_class_priority_map_add_clock_class( | |
1a9f7075 | 356 | ctf_fs_trace->cc_prio_map, clock_class, 0); |
599faa1c PP |
357 | BT_PUT(clock_class); |
358 | ||
359 | if (ret) { | |
360 | goto end; | |
361 | } | |
362 | } | |
363 | ||
364 | end: | |
365 | return ret; | |
366 | } | |
367 | ||
1a9f7075 PP |
368 | static |
369 | struct ctf_fs_trace *ctf_fs_trace_create(struct ctf_fs_component *ctf_fs, | |
370 | const char *path, const char *name) | |
371 | { | |
372 | struct ctf_fs_trace *ctf_fs_trace; | |
373 | int ret; | |
374 | ||
375 | ctf_fs_trace = g_new0(struct ctf_fs_trace, 1); | |
376 | if (!ctf_fs_trace) { | |
377 | goto end; | |
378 | } | |
379 | ||
380 | ctf_fs_trace->ctf_fs = ctf_fs; | |
381 | ctf_fs_trace->path = g_string_new(path); | |
382 | if (!ctf_fs_trace->path) { | |
383 | goto error; | |
384 | } | |
385 | ||
386 | ctf_fs_trace->name = g_string_new(name); | |
387 | if (!ctf_fs_trace->name) { | |
388 | goto error; | |
389 | } | |
390 | ||
391 | ctf_fs_trace->metadata = g_new0(struct ctf_fs_metadata, 1); | |
392 | if (!ctf_fs_trace->metadata) { | |
393 | goto error; | |
394 | } | |
395 | ||
396 | ret = ctf_fs_metadata_set_trace(ctf_fs_trace); | |
397 | if (ret) { | |
398 | goto error; | |
399 | } | |
400 | ||
401 | ret = create_cc_prio_map(ctf_fs_trace); | |
402 | if (ret) { | |
403 | goto error; | |
404 | } | |
405 | ||
406 | ret = create_ports_for_trace(ctf_fs_trace); | |
407 | if (ret) { | |
408 | goto error; | |
409 | } | |
410 | ||
411 | goto end; | |
412 | ||
413 | error: | |
414 | ctf_fs_trace_destroy(ctf_fs_trace); | |
415 | ctf_fs_trace = NULL; | |
416 | end: | |
417 | return ctf_fs_trace; | |
418 | } | |
419 | ||
420 | static | |
421 | int path_is_ctf_trace(const char *path) | |
422 | { | |
423 | GString *metadata_path = g_string_new(NULL); | |
424 | int ret = 0; | |
425 | ||
426 | if (!metadata_path) { | |
427 | ret = -1; | |
428 | goto end; | |
429 | } | |
430 | ||
431 | g_string_printf(metadata_path, "%s/%s", path, CTF_FS_METADATA_FILENAME); | |
432 | ||
433 | if (g_file_test(metadata_path->str, G_FILE_TEST_IS_REGULAR)) { | |
434 | ret = 1; | |
435 | goto end; | |
436 | } | |
437 | ||
438 | end: | |
439 | g_string_free(metadata_path, TRUE); | |
440 | return ret; | |
441 | } | |
442 | ||
443 | static | |
444 | int add_trace_path(struct ctf_fs_component *ctf_fs, GList **trace_paths, | |
445 | const char *path) | |
446 | { | |
447 | GString *path_str = g_string_new(NULL); | |
448 | int ret = 0; | |
449 | char *rp = NULL; | |
450 | ||
451 | if (!path_str) { | |
452 | ret = -1; | |
453 | goto end; | |
454 | } | |
455 | ||
456 | /* | |
457 | * Find the real path so that we don't have relative components | |
458 | * in the trace name. This also squashes consecutive slashes and | |
459 | * removes any slash at the end. | |
460 | */ | |
461 | rp = realpath(path, NULL); | |
462 | if (!rp) { | |
463 | PERR("realpath() failed: %s (%d)\n", strerror(errno), errno); | |
464 | ret = -1; | |
465 | goto end; | |
466 | } | |
467 | ||
468 | if (strcmp(rp, "/") == 0) { | |
469 | PERR("Opening a trace in `/` is not supported.\n"); | |
470 | ret = -1; | |
471 | goto end; | |
472 | } | |
473 | ||
474 | g_string_assign(path_str, rp); | |
475 | *trace_paths = g_list_prepend(*trace_paths, path_str); | |
476 | assert(*trace_paths); | |
477 | ||
478 | end: | |
479 | free(rp); | |
480 | return ret; | |
481 | } | |
482 | ||
483 | static | |
484 | int find_ctf_traces(struct ctf_fs_component *ctf_fs, | |
485 | GList **trace_paths, const char *start_path) | |
486 | { | |
487 | int ret; | |
488 | GError *error = NULL; | |
489 | GDir *dir = NULL; | |
490 | const char *basename = NULL; | |
491 | ||
492 | /* Check if the starting path is a CTF trace itself */ | |
493 | ret = path_is_ctf_trace(start_path); | |
494 | if (ret < 0) { | |
495 | goto end; | |
496 | } | |
497 | ||
498 | if (ret) { | |
499 | /* | |
500 | * Do not even recurse: a CTF trace cannot contain | |
501 | * another CTF trace. | |
502 | */ | |
503 | ret = add_trace_path(ctf_fs, trace_paths, start_path); | |
504 | goto end; | |
505 | } | |
506 | ||
507 | /* Look for subdirectories */ | |
508 | if (!g_file_test(start_path, G_FILE_TEST_IS_DIR)) { | |
509 | /* Starting path is not a directory: end of recursion */ | |
510 | goto end; | |
511 | } | |
512 | ||
513 | dir = g_dir_open(start_path, 0, &error); | |
514 | if (!dir) { | |
515 | if (error->code == G_FILE_ERROR_ACCES) { | |
516 | PDBG("Cannot open directory `%s`: %s (code %d): continuing\n", | |
517 | start_path, error->message, error->code); | |
518 | goto end; | |
519 | } | |
520 | ||
521 | PERR("Cannot open directory `%s`: %s (code %d)\n", | |
522 | start_path, error->message, error->code); | |
523 | ret = -1; | |
524 | goto end; | |
525 | } | |
526 | ||
527 | while ((basename = g_dir_read_name(dir))) { | |
528 | GString *sub_path = g_string_new(NULL); | |
529 | ||
530 | if (!sub_path) { | |
531 | ret = -1; | |
532 | goto end; | |
533 | } | |
534 | ||
535 | g_string_printf(sub_path, "%s/%s", start_path, basename); | |
536 | ret = find_ctf_traces(ctf_fs, trace_paths, sub_path->str); | |
537 | g_string_free(sub_path, TRUE); | |
538 | if (ret) { | |
539 | goto end; | |
540 | } | |
541 | } | |
542 | ||
543 | end: | |
544 | if (dir) { | |
545 | g_dir_close(dir); | |
546 | } | |
547 | ||
548 | if (error) { | |
549 | g_error_free(error); | |
550 | } | |
551 | ||
552 | return ret; | |
553 | } | |
554 | ||
555 | static | |
556 | GList *create_trace_names(GList *trace_paths) { | |
557 | GList *trace_names = NULL; | |
558 | size_t chars_to_strip = 0; | |
559 | size_t at = 0; | |
560 | GList *node; | |
561 | bool done = false; | |
562 | ||
563 | /* | |
564 | * Find the number of characters to strip from the beginning, | |
565 | * that is, the longest prefix until a common slash (also | |
566 | * stripped). | |
567 | */ | |
568 | while (true) { | |
569 | gchar common_ch = '\0'; | |
570 | ||
571 | for (node = trace_paths; node; node = g_list_next(node)) { | |
572 | GString *gstr = node->data; | |
573 | gchar this_ch = gstr->str[at]; | |
574 | ||
575 | if (this_ch == '\0') { | |
576 | done = true; | |
577 | break; | |
578 | } | |
579 | ||
580 | if (common_ch == '\0') { | |
581 | /* | |
582 | * Establish the expected common | |
583 | * character at this position. | |
584 | */ | |
585 | common_ch = this_ch; | |
586 | continue; | |
587 | } | |
588 | ||
589 | if (this_ch != common_ch) { | |
590 | done = true; | |
591 | break; | |
592 | } | |
593 | } | |
594 | ||
595 | if (done) { | |
596 | break; | |
597 | } | |
598 | ||
599 | if (common_ch == '/') { | |
600 | /* | |
601 | * Common character is a slash: safe to include | |
602 | * this slash in the number of characters to | |
603 | * strip because the paths are guaranteed not to | |
604 | * end with slash. | |
605 | */ | |
606 | chars_to_strip = at + 1; | |
607 | } | |
608 | ||
609 | at++; | |
610 | } | |
611 | ||
612 | /* Create the trace names */ | |
613 | for (node = trace_paths; node; node = g_list_next(node)) { | |
614 | GString *trace_name = g_string_new(NULL); | |
615 | GString *trace_path = node->data; | |
616 | ||
617 | g_string_assign(trace_name, &trace_path->str[chars_to_strip]); | |
618 | trace_names = g_list_append(trace_names, trace_name); | |
619 | } | |
620 | ||
621 | return trace_names; | |
622 | } | |
623 | ||
624 | static | |
625 | int create_ctf_fs_traces(struct ctf_fs_component *ctf_fs, | |
626 | const char *path_param) | |
627 | { | |
628 | struct ctf_fs_trace *ctf_fs_trace = NULL; | |
629 | int ret = 0; | |
630 | GList *trace_paths = NULL; | |
631 | GList *trace_names = NULL; | |
632 | GList *tp_node; | |
633 | GList *tn_node; | |
634 | ||
635 | ret = find_ctf_traces(ctf_fs, &trace_paths, path_param); | |
636 | if (ret) { | |
637 | goto error; | |
638 | } | |
639 | ||
640 | if (!trace_paths) { | |
641 | PERR("No CTF traces recursively found in `%s`.\n", | |
642 | path_param); | |
643 | goto error; | |
644 | } | |
645 | ||
646 | trace_names = create_trace_names(trace_paths); | |
647 | if (!trace_names) { | |
648 | PERR("Cannot create trace names from trace paths.\n"); | |
649 | goto error; | |
650 | } | |
651 | ||
652 | for (tp_node = trace_paths, tn_node = trace_names; tp_node; | |
653 | tp_node = g_list_next(tp_node), | |
654 | tn_node = g_list_next(tn_node)) { | |
655 | GString *trace_path = tp_node->data; | |
656 | GString *trace_name = tn_node->data; | |
657 | ||
658 | ctf_fs_trace = ctf_fs_trace_create(ctf_fs, trace_path->str, | |
659 | trace_name->str); | |
660 | if (!ctf_fs_trace) { | |
661 | PERR("Cannot create trace for `%s`.\n", | |
662 | trace_path->str); | |
663 | goto error; | |
664 | } | |
52c5fe74 PP |
665 | |
666 | g_ptr_array_add(ctf_fs->traces, ctf_fs_trace); | |
667 | ctf_fs_trace = NULL; | |
1a9f7075 PP |
668 | } |
669 | ||
1a9f7075 PP |
670 | goto end; |
671 | ||
672 | error: | |
673 | ret = -1; | |
674 | ctf_fs_trace_destroy(ctf_fs_trace); | |
675 | ||
676 | end: | |
677 | for (tp_node = trace_paths; tp_node; tp_node = g_list_next(tp_node)) { | |
678 | if (tp_node->data) { | |
679 | g_string_free(tp_node->data, TRUE); | |
680 | } | |
681 | } | |
682 | ||
683 | for (tn_node = trace_names; tn_node; tn_node = g_list_next(tn_node)) { | |
684 | if (tn_node->data) { | |
685 | g_string_free(tn_node->data, TRUE); | |
686 | } | |
687 | } | |
688 | ||
689 | if (trace_paths) { | |
690 | g_list_free(trace_paths); | |
691 | } | |
692 | ||
693 | if (trace_names) { | |
694 | g_list_free(trace_names); | |
695 | } | |
696 | ||
697 | return ret; | |
698 | } | |
699 | ||
5b29e799 | 700 | static |
4f1f88a6 PP |
701 | struct ctf_fs_component *ctf_fs_create(struct bt_private_component *priv_comp, |
702 | struct bt_value *params) | |
56a1cced JG |
703 | { |
704 | struct ctf_fs_component *ctf_fs; | |
1ef09eb5 | 705 | struct bt_value *value = NULL; |
1a9f7075 | 706 | const char *path_param; |
4f1f88a6 | 707 | int ret; |
56a1cced JG |
708 | |
709 | ctf_fs = g_new0(struct ctf_fs_component, 1); | |
710 | if (!ctf_fs) { | |
711 | goto end; | |
712 | } | |
713 | ||
1a9f7075 PP |
714 | ret = bt_private_component_set_user_data(priv_comp, ctf_fs); |
715 | assert(ret == 0); | |
716 | ||
4f1f88a6 PP |
717 | /* |
718 | * We don't need to get a new reference here because as long as | |
719 | * our private ctf_fs_component object exists, the containing | |
720 | * private component should also exist. | |
721 | */ | |
722 | ctf_fs->priv_comp = priv_comp; | |
56a1cced | 723 | value = bt_value_map_get(params, "path"); |
1a9f7075 | 724 | if (!bt_value_is_string(value)) { |
56a1cced JG |
725 | goto error; |
726 | } | |
727 | ||
1a9f7075 PP |
728 | ret = bt_value_string_get(value, &path_param); |
729 | assert(ret == 0); | |
730 | BT_PUT(value); | |
92540773 JD |
731 | value = bt_value_map_get(params, "offset-s"); |
732 | if (value) { | |
733 | int64_t offset; | |
734 | ||
735 | if (!bt_value_is_integer(value)) { | |
736 | fprintf(stderr, | |
737 | "offset-s should be an integer\n"); | |
738 | goto error; | |
739 | } | |
740 | ret = bt_value_integer_get(value, &offset); | |
1a9f7075 | 741 | assert(ret == 0); |
92540773 | 742 | ctf_fs->options.clock_offset = offset; |
1a9f7075 | 743 | BT_PUT(value); |
92540773 JD |
744 | } |
745 | ||
746 | value = bt_value_map_get(params, "offset-ns"); | |
747 | if (value) { | |
748 | int64_t offset; | |
749 | ||
750 | if (!bt_value_is_integer(value)) { | |
751 | fprintf(stderr, | |
752 | "offset-ns should be an integer\n"); | |
753 | goto error; | |
754 | } | |
755 | ret = bt_value_integer_get(value, &offset); | |
1a9f7075 | 756 | assert(ret == 0); |
92540773 | 757 | ctf_fs->options.clock_offset_ns = offset; |
1a9f7075 | 758 | BT_PUT(value); |
92540773 JD |
759 | } |
760 | ||
56a1cced JG |
761 | ctf_fs->error_fp = stderr; |
762 | ctf_fs->page_size = (size_t) getpagesize(); | |
1a9f7075 PP |
763 | ctf_fs->port_data = g_ptr_array_new_with_free_func(port_data_destroy); |
764 | if (!ctf_fs->port_data) { | |
4f1f88a6 PP |
765 | goto error; |
766 | } | |
767 | ||
1a9f7075 PP |
768 | ctf_fs->traces = g_ptr_array_new_with_free_func(ctf_fs_trace_destroy); |
769 | if (!ctf_fs->traces) { | |
599faa1c PP |
770 | goto error; |
771 | } | |
772 | ||
1a9f7075 | 773 | ret = create_ctf_fs_traces(ctf_fs, path_param); |
4f1f88a6 PP |
774 | if (ret) { |
775 | goto error; | |
776 | } | |
777 | ||
1ef09eb5 JG |
778 | goto end; |
779 | ||
56a1cced | 780 | error: |
1a9f7075 | 781 | ctf_fs_destroy(ctf_fs); |
e7a4393b | 782 | ctf_fs = NULL; |
1a9f7075 PP |
783 | ret = bt_private_component_set_user_data(priv_comp, NULL); |
784 | assert(ret == 0); | |
785 | ||
1ef09eb5 | 786 | end: |
1a9f7075 | 787 | bt_put(value); |
56a1cced JG |
788 | return ctf_fs; |
789 | } | |
790 | ||
ea0b4b9e | 791 | BT_HIDDEN |
4f1f88a6 | 792 | enum bt_component_status ctf_fs_init(struct bt_private_component *priv_comp, |
7d61fa8e | 793 | struct bt_value *params, UNUSED_VAR void *init_method_data) |
ea0b4b9e JG |
794 | { |
795 | struct ctf_fs_component *ctf_fs; | |
796 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; | |
797 | ||
ea0b4b9e | 798 | ctf_fs_debug = g_strcmp0(getenv("CTF_FS_DEBUG"), "1") == 0; |
4f1f88a6 | 799 | ctf_fs = ctf_fs_create(priv_comp, params); |
ea0b4b9e | 800 | if (!ctf_fs) { |
1a9f7075 | 801 | ret = BT_COMPONENT_STATUS_ERROR; |
ea0b4b9e | 802 | } |
4c1456f0 | 803 | |
ea0b4b9e JG |
804 | return ret; |
805 | } | |
33f93973 PP |
806 | |
807 | BT_HIDDEN | |
a67681c1 PP |
808 | struct bt_value *ctf_fs_query(struct bt_component_class *comp_class, |
809 | const char *object, struct bt_value *params) | |
33f93973 PP |
810 | { |
811 | struct bt_value *results = NULL; | |
812 | struct bt_value *path_value = NULL; | |
813 | char *metadata_text = NULL; | |
814 | FILE *metadata_fp = NULL; | |
815 | GString *g_metadata_text = NULL; | |
816 | ||
a67681c1 | 817 | if (strcmp(object, "metadata-info") == 0) { |
33f93973 PP |
818 | int ret; |
819 | int bo; | |
820 | const char *path; | |
821 | bool is_packetized; | |
822 | ||
823 | results = bt_value_map_create(); | |
824 | if (!results) { | |
825 | goto error; | |
826 | } | |
827 | ||
828 | if (!bt_value_is_map(params)) { | |
829 | fprintf(stderr, | |
a67681c1 | 830 | "Query parameters is not a map value object\n"); |
33f93973 PP |
831 | goto error; |
832 | } | |
833 | ||
834 | path_value = bt_value_map_get(params, "path"); | |
835 | ret = bt_value_string_get(path_value, &path); | |
836 | if (ret) { | |
837 | fprintf(stderr, | |
838 | "Cannot get `path` string parameter\n"); | |
839 | goto error; | |
840 | } | |
841 | ||
842 | assert(path); | |
843 | metadata_fp = ctf_fs_metadata_open_file(path); | |
844 | if (!metadata_fp) { | |
845 | fprintf(stderr, | |
846 | "Cannot open trace at path `%s`\n", path); | |
847 | goto error; | |
848 | } | |
849 | ||
1e649dff PP |
850 | is_packetized = ctf_metadata_decoder_is_packetized(metadata_fp, |
851 | &bo); | |
33f93973 PP |
852 | |
853 | if (is_packetized) { | |
1e649dff PP |
854 | ret = ctf_metadata_decoder_packetized_file_stream_to_buf( |
855 | metadata_fp, &metadata_text, bo); | |
33f93973 PP |
856 | if (ret) { |
857 | fprintf(stderr, | |
858 | "Cannot decode packetized metadata file\n"); | |
859 | goto error; | |
860 | } | |
861 | } else { | |
862 | long filesize; | |
863 | ||
864 | fseek(metadata_fp, 0, SEEK_END); | |
865 | filesize = ftell(metadata_fp); | |
866 | rewind(metadata_fp); | |
867 | metadata_text = malloc(filesize + 1); | |
868 | if (!metadata_text) { | |
869 | fprintf(stderr, | |
870 | "Cannot allocate buffer for metadata text\n"); | |
871 | goto error; | |
872 | } | |
873 | ||
874 | if (fread(metadata_text, filesize, 1, metadata_fp) != | |
875 | 1) { | |
876 | fprintf(stderr, | |
877 | "Cannot read metadata file\n"); | |
878 | goto error; | |
879 | } | |
880 | ||
881 | metadata_text[filesize] = '\0'; | |
882 | } | |
883 | ||
884 | g_metadata_text = g_string_new(NULL); | |
885 | if (!g_metadata_text) { | |
886 | goto error; | |
887 | } | |
888 | ||
889 | if (strncmp(metadata_text, METADATA_TEXT_SIG, | |
890 | sizeof(METADATA_TEXT_SIG) - 1) != 0) { | |
891 | g_string_assign(g_metadata_text, METADATA_TEXT_SIG); | |
892 | g_string_append(g_metadata_text, " */\n\n"); | |
893 | } | |
894 | ||
895 | g_string_append(g_metadata_text, metadata_text); | |
896 | ||
897 | ret = bt_value_map_insert_string(results, "text", | |
898 | g_metadata_text->str); | |
899 | if (ret) { | |
900 | fprintf(stderr, "Cannot insert metadata text into results\n"); | |
901 | goto error; | |
902 | } | |
903 | ||
904 | ret = bt_value_map_insert_bool(results, "is-packetized", | |
905 | is_packetized); | |
906 | if (ret) { | |
907 | fprintf(stderr, "Cannot insert is packetized into results\n"); | |
908 | goto error; | |
909 | } | |
910 | } else { | |
a67681c1 | 911 | fprintf(stderr, "Unknown query object `%s`\n", object); |
33f93973 PP |
912 | goto error; |
913 | } | |
914 | ||
915 | goto end; | |
916 | ||
917 | error: | |
918 | BT_PUT(results); | |
919 | ||
920 | end: | |
921 | bt_put(path_value); | |
922 | free(metadata_text); | |
923 | ||
924 | if (g_metadata_text) { | |
925 | g_string_free(g_metadata_text, TRUE); | |
926 | } | |
927 | ||
928 | if (metadata_fp) { | |
929 | fclose(metadata_fp); | |
930 | } | |
931 | return results; | |
932 | } |