Commit | Line | Data |
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d8866baa PP |
1 | /* |
2 | * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation | |
3 | * Copyright 2017 Philippe Proulx <jeremie.galarneau@efficios.com> | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
6 | * of this software and associated documentation files (the "Software"), to deal | |
7 | * in the Software without restriction, including without limitation the rights | |
8 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
9 | * copies of the Software, and to permit persons to whom the Software is | |
10 | * furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
21 | * SOFTWARE. | |
22 | */ | |
23 | ||
33ec5dfa PP |
24 | #define BT_LOG_TAG "PLUGIN-TEXT-DMESG-SRC" |
25 | #include "logging.h" | |
26 | ||
d8866baa | 27 | #include <stdbool.h> |
33ec5dfa PP |
28 | #include <string.h> |
29 | #include <ctype.h> | |
d8866baa | 30 | #include <stdio.h> |
f6ccaed9 | 31 | #include <babeltrace/assert-internal.h> |
33ec5dfa PP |
32 | #include <babeltrace/babeltrace.h> |
33 | #include <babeltrace/values-internal.h> | |
34 | #include <babeltrace/compat/utc-internal.h> | |
35 | #include <babeltrace/compat/stdio-internal.h> | |
d8866baa PP |
36 | #include <glib.h> |
37 | ||
33ec5dfa PP |
38 | #define NSEC_PER_USEC 1000UL |
39 | #define NSEC_PER_MSEC 1000000UL | |
40 | #define NSEC_PER_SEC 1000000000ULL | |
41 | #define USEC_PER_SEC 1000000UL | |
42 | ||
d8866baa PP |
43 | struct dmesg_component; |
44 | ||
45 | struct dmesg_notif_iter { | |
46 | struct dmesg_component *dmesg_comp; | |
f0010051 | 47 | struct bt_private_connection_private_notification_iterator *pc_notif_iter; /* Weak */ |
33ec5dfa PP |
48 | char *linebuf; |
49 | size_t linebuf_len; | |
d8866baa | 50 | FILE *fp; |
312c056a PP |
51 | struct bt_notification *tmp_event_notif; |
52 | ||
53 | enum { | |
54 | STATE_EMIT_STREAM_BEGINNING, | |
55 | STATE_EMIT_PACKET_BEGINNING, | |
56 | STATE_EMIT_EVENT, | |
57 | STATE_EMIT_PACKET_END, | |
58 | STATE_EMIT_STREAM_END, | |
59 | STATE_DONE, | |
60 | } state; | |
d8866baa PP |
61 | }; |
62 | ||
63 | struct dmesg_component { | |
64 | struct { | |
65 | GString *path; | |
33ec5dfa | 66 | bt_bool read_from_stdin; |
707b323a | 67 | bt_bool no_timestamp; |
d8866baa PP |
68 | } params; |
69 | ||
50842bdc PP |
70 | struct bt_trace *trace; |
71 | struct bt_stream_class *stream_class; | |
72 | struct bt_event_class *event_class; | |
73 | struct bt_stream *stream; | |
74 | struct bt_packet *packet; | |
75 | struct bt_clock_class *clock_class; | |
d8866baa PP |
76 | struct bt_clock_class_priority_map *cc_prio_map; |
77 | }; | |
78 | ||
33ec5dfa | 79 | static |
5cd6d0e5 | 80 | struct bt_field_class *create_event_payload_fc(void) |
33ec5dfa | 81 | { |
5cd6d0e5 PP |
82 | struct bt_field_class *root_fc = NULL; |
83 | struct bt_field_class *fc = NULL; | |
33ec5dfa PP |
84 | int ret; |
85 | ||
5cd6d0e5 PP |
86 | root_fc = bt_field_class_structure_create(); |
87 | if (!root_fc) { | |
88 | BT_LOGE_STR("Cannot create an empty structure field class object."); | |
33ec5dfa PP |
89 | goto error; |
90 | } | |
91 | ||
5cd6d0e5 PP |
92 | fc = bt_field_class_string_create(); |
93 | if (!fc) { | |
94 | BT_LOGE_STR("Cannot create a string field class object."); | |
33ec5dfa PP |
95 | goto error; |
96 | } | |
97 | ||
5cd6d0e5 | 98 | ret = bt_field_class_structure_append_member(root_fc, "str", fc); |
33ec5dfa | 99 | if (ret) { |
5cd6d0e5 | 100 | BT_LOGE("Cannot add `str` member to structure field class: " |
33ec5dfa PP |
101 | "ret=%d", ret); |
102 | goto error; | |
103 | } | |
104 | ||
105 | goto end; | |
106 | ||
107 | error: | |
65300d60 | 108 | BT_OBJECT_PUT_REF_AND_RESET(root_fc); |
33ec5dfa PP |
109 | |
110 | end: | |
65300d60 | 111 | bt_object_put_ref(fc); |
5cd6d0e5 | 112 | return root_fc; |
33ec5dfa PP |
113 | } |
114 | ||
33ec5dfa PP |
115 | static |
116 | int create_meta(struct dmesg_component *dmesg_comp, bool has_ts) | |
117 | { | |
5cd6d0e5 | 118 | struct bt_field_class *fc = NULL; |
33ec5dfa PP |
119 | const char *trace_name = NULL; |
120 | gchar *basename = NULL; | |
d8866baa PP |
121 | int ret = 0; |
122 | ||
50842bdc | 123 | dmesg_comp->trace = bt_trace_create(); |
33ec5dfa PP |
124 | if (!dmesg_comp->trace) { |
125 | BT_LOGE_STR("Cannot create an empty trace object."); | |
126 | goto error; | |
127 | } | |
128 | ||
33ec5dfa PP |
129 | if (dmesg_comp->params.read_from_stdin) { |
130 | trace_name = "STDIN"; | |
131 | } else { | |
132 | basename = g_path_get_basename(dmesg_comp->params.path->str); | |
f6ccaed9 | 133 | BT_ASSERT(basename); |
33ec5dfa PP |
134 | |
135 | if (strcmp(basename, G_DIR_SEPARATOR_S) != 0 && | |
136 | strcmp(basename, ".") != 0) { | |
137 | trace_name = basename; | |
138 | } | |
139 | } | |
140 | ||
141 | if (trace_name) { | |
50842bdc | 142 | ret = bt_trace_set_name(dmesg_comp->trace, trace_name); |
33ec5dfa PP |
143 | if (ret) { |
144 | BT_LOGE("Cannot set trace's name: name=\"%s\"", trace_name); | |
145 | goto error; | |
146 | } | |
147 | } | |
148 | ||
44c440bc | 149 | dmesg_comp->stream_class = bt_stream_class_create(dmesg_comp->trace); |
33ec5dfa | 150 | if (!dmesg_comp->stream_class) { |
44c440bc | 151 | BT_LOGE_STR("Cannot create a stream class object."); |
33ec5dfa PP |
152 | goto error; |
153 | } | |
154 | ||
33ec5dfa | 155 | if (has_ts) { |
44c440bc | 156 | dmesg_comp->clock_class = bt_clock_class_create(); |
33ec5dfa PP |
157 | if (!dmesg_comp->clock_class) { |
158 | BT_LOGE_STR("Cannot create clock class."); | |
159 | goto error; | |
160 | } | |
161 | ||
44c440bc PP |
162 | ret = bt_stream_class_set_default_clock_class( |
163 | dmesg_comp->stream_class, dmesg_comp->clock_class); | |
33ec5dfa | 164 | if (ret) { |
44c440bc | 165 | BT_LOGE_STR("Cannot set stream class's default clock class."); |
33ec5dfa PP |
166 | goto error; |
167 | } | |
168 | } | |
169 | ||
44c440bc PP |
170 | dmesg_comp->event_class = bt_event_class_create( |
171 | dmesg_comp->stream_class); | |
33ec5dfa | 172 | if (!dmesg_comp->event_class) { |
44c440bc PP |
173 | BT_LOGE_STR("Cannot create an event class object."); |
174 | goto error; | |
175 | } | |
176 | ||
177 | ret = bt_event_class_set_name(dmesg_comp->event_class, "string"); | |
178 | if (ret) { | |
179 | BT_LOGE_STR("Cannot set event class's name."); | |
33ec5dfa PP |
180 | goto error; |
181 | } | |
182 | ||
5cd6d0e5 PP |
183 | fc = create_event_payload_fc(); |
184 | if (!fc) { | |
185 | BT_LOGE_STR("Cannot create event payload field class."); | |
d8866baa PP |
186 | goto error; |
187 | } | |
188 | ||
5cd6d0e5 | 189 | ret = bt_event_class_set_payload_field_class(dmesg_comp->event_class, fc); |
33ec5dfa | 190 | if (ret) { |
5cd6d0e5 | 191 | BT_LOGE_STR("Cannot set event class's event payload field class."); |
33ec5dfa PP |
192 | goto error; |
193 | } | |
194 | ||
33ec5dfa PP |
195 | goto end; |
196 | ||
197 | error: | |
198 | ret = -1; | |
199 | ||
200 | end: | |
65300d60 | 201 | bt_object_put_ref(fc); |
33ec5dfa PP |
202 | |
203 | if (basename) { | |
204 | g_free(basename); | |
205 | } | |
206 | ||
207 | return ret; | |
208 | } | |
209 | ||
210 | static | |
211 | int handle_params(struct dmesg_component *dmesg_comp, struct bt_value *params) | |
212 | { | |
707b323a | 213 | struct bt_value *no_timestamp = NULL; |
33ec5dfa PP |
214 | struct bt_value *path = NULL; |
215 | const char *path_str; | |
216 | int ret = 0; | |
217 | ||
07208d85 PP |
218 | no_timestamp = bt_value_map_borrow_entry_value(params, |
219 | "no-extract-timestamp"); | |
707b323a PP |
220 | if (no_timestamp) { |
221 | if (!bt_value_is_bool(no_timestamp)) { | |
222 | BT_LOGE("Expecting a boolean value for the `no-extract-timestamp` parameter: " | |
223 | "type=%s", | |
224 | bt_value_type_string( | |
225 | bt_value_get_type(no_timestamp))); | |
226 | goto error; | |
227 | } | |
228 | ||
229 | ret = bt_value_bool_get(no_timestamp, | |
230 | &dmesg_comp->params.no_timestamp); | |
f6ccaed9 | 231 | BT_ASSERT(ret == 0); |
707b323a PP |
232 | } |
233 | ||
07208d85 | 234 | path = bt_value_map_borrow_entry_value(params, "path"); |
d8866baa PP |
235 | if (path) { |
236 | if (dmesg_comp->params.read_from_stdin) { | |
33ec5dfa | 237 | BT_LOGE_STR("Cannot specify both `read-from-stdin` and `path` parameters."); |
d8866baa PP |
238 | goto error; |
239 | } | |
240 | ||
241 | if (!bt_value_is_string(path)) { | |
33ec5dfa PP |
242 | BT_LOGE("Expecting a string value for the `path` parameter: " |
243 | "type=%s", | |
244 | bt_value_type_string( | |
245 | bt_value_get_type(path))); | |
d8866baa PP |
246 | goto error; |
247 | } | |
248 | ||
33ec5dfa | 249 | ret = bt_value_string_get(path, &path_str); |
f6ccaed9 | 250 | BT_ASSERT(ret == 0); |
d8866baa PP |
251 | g_string_assign(dmesg_comp->params.path, path_str); |
252 | } else { | |
4da23e31 | 253 | dmesg_comp->params.read_from_stdin = true; |
d8866baa PP |
254 | } |
255 | ||
256 | goto end; | |
257 | ||
258 | error: | |
259 | ret = -1; | |
260 | ||
261 | end: | |
d8866baa PP |
262 | return ret; |
263 | } | |
264 | ||
33ec5dfa PP |
265 | static |
266 | int create_packet_and_stream(struct dmesg_component *dmesg_comp) | |
267 | { | |
268 | int ret = 0; | |
33ec5dfa | 269 | |
44c440bc | 270 | dmesg_comp->stream = bt_stream_create(dmesg_comp->stream_class); |
33ec5dfa PP |
271 | if (!dmesg_comp->stream) { |
272 | BT_LOGE_STR("Cannot create stream object."); | |
273 | goto error; | |
274 | } | |
275 | ||
44c440bc | 276 | dmesg_comp->packet = bt_packet_create(dmesg_comp->stream); |
33ec5dfa PP |
277 | if (!dmesg_comp->packet) { |
278 | BT_LOGE_STR("Cannot create packet object."); | |
279 | goto error; | |
280 | } | |
281 | ||
44c440bc | 282 | ret = bt_trace_make_static(dmesg_comp->trace); |
33ec5dfa PP |
283 | if (ret) { |
284 | BT_LOGE_STR("Cannot make trace static."); | |
285 | goto error; | |
286 | } | |
287 | ||
288 | goto end; | |
289 | ||
290 | error: | |
291 | ret = -1; | |
292 | ||
293 | end: | |
33ec5dfa PP |
294 | return ret; |
295 | } | |
296 | ||
297 | static | |
298 | int try_create_meta_stream_packet(struct dmesg_component *dmesg_comp, | |
299 | bool has_ts) | |
300 | { | |
301 | int ret = 0; | |
302 | ||
303 | if (dmesg_comp->trace) { | |
304 | /* Already created */ | |
305 | goto end; | |
306 | } | |
307 | ||
308 | ret = create_meta(dmesg_comp, has_ts); | |
309 | if (ret) { | |
310 | BT_LOGE("Cannot create metadata objects: dmesg-comp-addr=%p", | |
311 | dmesg_comp); | |
312 | goto error; | |
313 | } | |
314 | ||
315 | ret = create_packet_and_stream(dmesg_comp); | |
316 | if (ret) { | |
317 | BT_LOGE("Cannot create packet and stream objects: " | |
318 | "dmesg-comp-addr=%p", dmesg_comp); | |
319 | goto error; | |
320 | } | |
321 | ||
322 | goto end; | |
323 | ||
324 | error: | |
325 | ret = -1; | |
326 | ||
327 | end: | |
328 | return ret; | |
329 | } | |
d8866baa PP |
330 | |
331 | static | |
332 | void destroy_dmesg_component(struct dmesg_component *dmesg_comp) | |
333 | { | |
334 | if (!dmesg_comp) { | |
335 | return; | |
336 | } | |
337 | ||
338 | if (dmesg_comp->params.path) { | |
339 | g_string_free(dmesg_comp->params.path, TRUE); | |
340 | } | |
341 | ||
65300d60 PP |
342 | bt_object_put_ref(dmesg_comp->packet); |
343 | bt_object_put_ref(dmesg_comp->trace); | |
344 | bt_object_put_ref(dmesg_comp->stream_class); | |
345 | bt_object_put_ref(dmesg_comp->event_class); | |
346 | bt_object_put_ref(dmesg_comp->stream); | |
347 | bt_object_put_ref(dmesg_comp->clock_class); | |
348 | bt_object_put_ref(dmesg_comp->cc_prio_map); | |
d8866baa PP |
349 | g_free(dmesg_comp); |
350 | } | |
351 | ||
33ec5dfa PP |
352 | static |
353 | enum bt_component_status create_port(struct bt_private_component *priv_comp) | |
354 | { | |
355 | return bt_private_component_source_add_output_private_port(priv_comp, | |
356 | "out", NULL, NULL); | |
357 | } | |
358 | ||
d8866baa PP |
359 | BT_HIDDEN |
360 | enum bt_component_status dmesg_init(struct bt_private_component *priv_comp, | |
361 | struct bt_value *params, void *init_method_data) | |
362 | { | |
363 | int ret = 0; | |
364 | struct dmesg_component *dmesg_comp = g_new0(struct dmesg_component, 1); | |
365 | enum bt_component_status status = BT_COMPONENT_STATUS_OK; | |
366 | ||
367 | if (!dmesg_comp) { | |
33ec5dfa | 368 | BT_LOGE_STR("Failed to allocate one dmesg component structure."); |
d8866baa PP |
369 | goto error; |
370 | } | |
371 | ||
372 | dmesg_comp->params.path = g_string_new(NULL); | |
373 | if (!dmesg_comp->params.path) { | |
33ec5dfa | 374 | BT_LOGE_STR("Failed to allocate a GString."); |
d8866baa PP |
375 | goto error; |
376 | } | |
377 | ||
33ec5dfa | 378 | ret = handle_params(dmesg_comp, params); |
d8866baa | 379 | if (ret) { |
33ec5dfa | 380 | BT_LOGE("Invalid parameters: comp-addr=%p", priv_comp); |
d8866baa PP |
381 | goto error; |
382 | } | |
383 | ||
33ec5dfa PP |
384 | if (!dmesg_comp->params.read_from_stdin && |
385 | !g_file_test(dmesg_comp->params.path->str, | |
386 | G_FILE_TEST_IS_REGULAR)) { | |
387 | BT_LOGE("Input path is not a regular file: " | |
388 | "comp-addr=%p, path=\"%s\"", priv_comp, | |
389 | dmesg_comp->params.path->str); | |
390 | goto error; | |
391 | } | |
d8866baa | 392 | |
33ec5dfa PP |
393 | status = create_port(priv_comp); |
394 | if (status != BT_COMPONENT_STATUS_OK) { | |
395 | goto error; | |
396 | } | |
d8866baa | 397 | |
33ec5dfa | 398 | (void) bt_private_component_set_user_data(priv_comp, dmesg_comp); |
d8866baa PP |
399 | goto end; |
400 | ||
401 | error: | |
402 | destroy_dmesg_component(dmesg_comp); | |
33ec5dfa PP |
403 | (void) bt_private_component_set_user_data(priv_comp, NULL); |
404 | ||
405 | if (status >= 0) { | |
406 | status = BT_COMPONENT_STATUS_ERROR; | |
407 | } | |
d8866baa PP |
408 | |
409 | end: | |
410 | return status; | |
411 | } | |
412 | ||
413 | BT_HIDDEN | |
414 | void dmesg_finalize(struct bt_private_component *priv_comp) | |
415 | { | |
33ec5dfa PP |
416 | void *data = bt_private_component_get_user_data(priv_comp); |
417 | ||
418 | destroy_dmesg_component(data); | |
419 | } | |
420 | ||
421 | static | |
312c056a | 422 | struct bt_notification *create_init_event_notif_from_line( |
f0010051 | 423 | struct dmesg_notif_iter *notif_iter, |
312c056a | 424 | const char *line, const char **new_start) |
33ec5dfa | 425 | { |
312c056a PP |
426 | struct bt_event *event; |
427 | struct bt_notification *notif = NULL; | |
33ec5dfa PP |
428 | bool has_timestamp = false; |
429 | unsigned long sec, usec, msec; | |
430 | unsigned int year, mon, mday, hour, min; | |
431 | uint64_t ts = 0; | |
33ec5dfa | 432 | int ret = 0; |
f0010051 | 433 | struct dmesg_component *dmesg_comp = notif_iter->dmesg_comp; |
33ec5dfa | 434 | |
33ec5dfa PP |
435 | *new_start = line; |
436 | ||
707b323a PP |
437 | if (dmesg_comp->params.no_timestamp) { |
438 | goto skip_ts; | |
439 | } | |
440 | ||
33ec5dfa PP |
441 | /* Extract time from input line */ |
442 | if (sscanf(line, "[%lu.%lu] ", &sec, &usec) == 2) { | |
443 | ts = (uint64_t) sec * USEC_PER_SEC + (uint64_t) usec; | |
444 | ||
445 | /* | |
446 | * The clock class we use has a 1 GHz frequency: convert | |
447 | * from µs to ns. | |
448 | */ | |
449 | ts *= NSEC_PER_USEC; | |
450 | has_timestamp = true; | |
451 | } else if (sscanf(line, "[%u-%u-%u %u:%u:%lu.%lu] ", | |
452 | &year, &mon, &mday, &hour, &min, | |
453 | &sec, &msec) == 7) { | |
454 | time_t ep_sec; | |
455 | struct tm ti; | |
456 | ||
457 | memset(&ti, 0, sizeof(ti)); | |
458 | ti.tm_year = year - 1900; /* From 1900 */ | |
459 | ti.tm_mon = mon - 1; /* 0 to 11 */ | |
460 | ti.tm_mday = mday; | |
461 | ti.tm_hour = hour; | |
462 | ti.tm_min = min; | |
463 | ti.tm_sec = sec; | |
464 | ||
465 | ep_sec = bt_timegm(&ti); | |
466 | if (ep_sec != (time_t) -1) { | |
467 | ts = (uint64_t) ep_sec * NSEC_PER_SEC | |
468 | + (uint64_t) msec * NSEC_PER_MSEC; | |
469 | } | |
470 | ||
471 | has_timestamp = true; | |
472 | } | |
473 | ||
474 | if (has_timestamp) { | |
475 | /* Set new start for the message portion of the line */ | |
476 | *new_start = strchr(line, ']'); | |
f6ccaed9 | 477 | BT_ASSERT(*new_start); |
33ec5dfa PP |
478 | (*new_start)++; |
479 | ||
480 | if ((*new_start)[0] == ' ') { | |
481 | (*new_start)++; | |
482 | } | |
483 | } | |
484 | ||
707b323a | 485 | skip_ts: |
33ec5dfa PP |
486 | /* |
487 | * At this point, we know if the stream class's event header | |
5cd6d0e5 | 488 | * field class should have a timestamp or not, so we can lazily |
33ec5dfa PP |
489 | * create the metadata, stream, and packet objects. |
490 | */ | |
491 | ret = try_create_meta_stream_packet(dmesg_comp, has_timestamp); | |
492 | if (ret) { | |
493 | /* try_create_meta_stream_packet() logs errors */ | |
494 | goto error; | |
495 | } | |
496 | ||
f0010051 | 497 | notif = bt_notification_event_create(notif_iter->pc_notif_iter, |
e22b45d0 | 498 | dmesg_comp->event_class, dmesg_comp->packet); |
312c056a PP |
499 | if (!notif) { |
500 | BT_LOGE_STR("Cannot create event notification."); | |
501 | goto error; | |
502 | } | |
33ec5dfa | 503 | |
312c056a PP |
504 | event = bt_notification_event_borrow_event(notif); |
505 | BT_ASSERT(event); | |
33ec5dfa | 506 | |
312c056a | 507 | if (dmesg_comp->clock_class) { |
44c440bc | 508 | ret = bt_event_set_default_clock_value(event, ts); |
312c056a | 509 | BT_ASSERT(ret == 0); |
33ec5dfa PP |
510 | } |
511 | ||
512 | goto end; | |
513 | ||
514 | error: | |
65300d60 | 515 | BT_OBJECT_PUT_REF_AND_RESET(notif); |
33ec5dfa PP |
516 | |
517 | end: | |
312c056a | 518 | return notif; |
33ec5dfa PP |
519 | } |
520 | ||
521 | static | |
f0010051 | 522 | int fill_event_payload_from_line(const char *line, struct bt_event *event) |
33ec5dfa | 523 | { |
50842bdc PP |
524 | struct bt_field *ep_field = NULL; |
525 | struct bt_field *str_field = NULL; | |
33ec5dfa PP |
526 | size_t len; |
527 | int ret; | |
528 | ||
44c440bc | 529 | ep_field = bt_event_borrow_payload_field(event); |
312c056a | 530 | BT_ASSERT(ep_field); |
44c440bc PP |
531 | str_field = bt_field_structure_borrow_member_field_by_index(ep_field, |
532 | 0); | |
33ec5dfa | 533 | if (!str_field) { |
312c056a | 534 | BT_LOGE_STR("Cannot borrow `timestamp` field from event payload structure field."); |
33ec5dfa PP |
535 | goto error; |
536 | } | |
537 | ||
538 | len = strlen(line); | |
539 | if (line[len - 1] == '\n') { | |
540 | /* Do not include the newline character in the payload */ | |
541 | len--; | |
542 | } | |
543 | ||
312c056a PP |
544 | ret = bt_field_string_clear(str_field); |
545 | if (ret) { | |
546 | BT_LOGE_STR("Cannot clear string field object."); | |
547 | goto error; | |
548 | } | |
549 | ||
44c440bc | 550 | ret = bt_field_string_append_with_length(str_field, line, len); |
33ec5dfa PP |
551 | if (ret) { |
552 | BT_LOGE("Cannot append value to string field object: " | |
553 | "len=%zu", len); | |
554 | goto error; | |
555 | } | |
556 | ||
33ec5dfa PP |
557 | goto end; |
558 | ||
559 | error: | |
560 | ret = -1; | |
561 | ||
562 | end: | |
33ec5dfa PP |
563 | return ret; |
564 | } | |
565 | ||
566 | static | |
567 | struct bt_notification *create_notif_from_line( | |
f0010051 | 568 | struct dmesg_notif_iter *dmesg_notif_iter, const char *line) |
33ec5dfa | 569 | { |
50842bdc | 570 | struct bt_event *event = NULL; |
33ec5dfa PP |
571 | struct bt_notification *notif = NULL; |
572 | const char *new_start; | |
573 | int ret; | |
574 | ||
f0010051 PP |
575 | notif = create_init_event_notif_from_line(dmesg_notif_iter, |
576 | line, &new_start); | |
312c056a PP |
577 | if (!notif) { |
578 | BT_LOGE_STR("Cannot create and initialize event notification from line."); | |
33ec5dfa PP |
579 | goto error; |
580 | } | |
581 | ||
312c056a PP |
582 | event = bt_notification_event_borrow_event(notif); |
583 | BT_ASSERT(event); | |
f0010051 | 584 | ret = fill_event_payload_from_line(new_start, event); |
33ec5dfa | 585 | if (ret) { |
312c056a | 586 | BT_LOGE("Cannot fill event payload field from line: " |
33ec5dfa PP |
587 | "ret=%d", ret); |
588 | goto error; | |
589 | } | |
590 | ||
33ec5dfa PP |
591 | goto end; |
592 | ||
593 | error: | |
65300d60 | 594 | BT_OBJECT_PUT_REF_AND_RESET(notif); |
33ec5dfa PP |
595 | |
596 | end: | |
33ec5dfa PP |
597 | return notif; |
598 | } | |
599 | ||
600 | static | |
601 | void destroy_dmesg_notif_iter(struct dmesg_notif_iter *dmesg_notif_iter) | |
602 | { | |
603 | if (!dmesg_notif_iter) { | |
604 | return; | |
605 | } | |
606 | ||
607 | if (dmesg_notif_iter->fp && dmesg_notif_iter->fp != stdin) { | |
608 | if (fclose(dmesg_notif_iter->fp)) { | |
609 | BT_LOGE_ERRNO("Cannot close input file", "."); | |
610 | } | |
611 | } | |
d8866baa | 612 | |
65300d60 | 613 | bt_object_put_ref(dmesg_notif_iter->tmp_event_notif); |
33ec5dfa PP |
614 | free(dmesg_notif_iter->linebuf); |
615 | g_free(dmesg_notif_iter); | |
d8866baa PP |
616 | } |
617 | ||
618 | BT_HIDDEN | |
619 | enum bt_notification_iterator_status dmesg_notif_iter_init( | |
90157d89 | 620 | struct bt_private_connection_private_notification_iterator *priv_notif_iter, |
d8866baa PP |
621 | struct bt_private_port *priv_port) |
622 | { | |
33ec5dfa PP |
623 | struct bt_private_component *priv_comp = NULL; |
624 | struct dmesg_component *dmesg_comp; | |
625 | struct dmesg_notif_iter *dmesg_notif_iter = | |
626 | g_new0(struct dmesg_notif_iter, 1); | |
627 | enum bt_notification_iterator_status status = | |
628 | BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
629 | ||
630 | if (!dmesg_notif_iter) { | |
631 | BT_LOGE_STR("Failed to allocate on dmesg notification iterator structure."); | |
632 | goto error; | |
633 | } | |
634 | ||
90157d89 | 635 | priv_comp = bt_private_connection_private_notification_iterator_get_private_component( |
33ec5dfa | 636 | priv_notif_iter); |
f6ccaed9 | 637 | BT_ASSERT(priv_comp); |
33ec5dfa | 638 | dmesg_comp = bt_private_component_get_user_data(priv_comp); |
f6ccaed9 | 639 | BT_ASSERT(dmesg_comp); |
33ec5dfa | 640 | dmesg_notif_iter->dmesg_comp = dmesg_comp; |
f0010051 | 641 | dmesg_notif_iter->pc_notif_iter = priv_notif_iter; |
d8866baa | 642 | |
33ec5dfa PP |
643 | if (dmesg_comp->params.read_from_stdin) { |
644 | dmesg_notif_iter->fp = stdin; | |
645 | } else { | |
646 | dmesg_notif_iter->fp = fopen(dmesg_comp->params.path->str, "r"); | |
647 | if (!dmesg_notif_iter->fp) { | |
648 | BT_LOGE_ERRNO("Cannot open input file in read mode", ": path=\"%s\"", | |
649 | dmesg_comp->params.path->str); | |
650 | goto error; | |
651 | } | |
652 | } | |
653 | ||
90157d89 | 654 | (void) bt_private_connection_private_notification_iterator_set_user_data(priv_notif_iter, |
33ec5dfa PP |
655 | dmesg_notif_iter); |
656 | goto end; | |
657 | ||
658 | error: | |
659 | destroy_dmesg_notif_iter(dmesg_notif_iter); | |
90157d89 | 660 | (void) bt_private_connection_private_notification_iterator_set_user_data(priv_notif_iter, |
33ec5dfa PP |
661 | NULL); |
662 | if (status >= 0) { | |
663 | status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; | |
664 | } | |
665 | ||
666 | end: | |
65300d60 | 667 | bt_object_put_ref(priv_comp); |
33ec5dfa | 668 | return status; |
d8866baa PP |
669 | } |
670 | ||
671 | BT_HIDDEN | |
33ec5dfa | 672 | void dmesg_notif_iter_finalize( |
90157d89 | 673 | struct bt_private_connection_private_notification_iterator *priv_notif_iter) |
d8866baa | 674 | { |
90157d89 | 675 | destroy_dmesg_notif_iter(bt_private_connection_private_notification_iterator_get_user_data( |
33ec5dfa | 676 | priv_notif_iter)); |
d8866baa PP |
677 | } |
678 | ||
d4393e08 PP |
679 | static |
680 | enum bt_notification_iterator_status dmesg_notif_iter_next_one( | |
681 | struct dmesg_notif_iter *dmesg_notif_iter, | |
682 | struct bt_notification **notif) | |
d8866baa | 683 | { |
33ec5dfa | 684 | ssize_t len; |
33ec5dfa | 685 | struct dmesg_component *dmesg_comp; |
d4393e08 PP |
686 | enum bt_notification_iterator_status status = |
687 | BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
d8866baa | 688 | |
f6ccaed9 | 689 | BT_ASSERT(dmesg_notif_iter); |
33ec5dfa | 690 | dmesg_comp = dmesg_notif_iter->dmesg_comp; |
f6ccaed9 | 691 | BT_ASSERT(dmesg_comp); |
33ec5dfa | 692 | |
312c056a | 693 | if (dmesg_notif_iter->state == STATE_DONE) { |
d4393e08 | 694 | status = BT_NOTIFICATION_ITERATOR_STATUS_END; |
312c056a PP |
695 | goto end; |
696 | } | |
697 | ||
698 | if (dmesg_notif_iter->tmp_event_notif || | |
699 | dmesg_notif_iter->state == STATE_EMIT_PACKET_END || | |
700 | dmesg_notif_iter->state == STATE_EMIT_STREAM_END) { | |
701 | goto handle_state; | |
702 | } | |
703 | ||
33ec5dfa PP |
704 | while (true) { |
705 | const char *ch; | |
706 | bool only_spaces = true; | |
707 | ||
708 | len = bt_getline(&dmesg_notif_iter->linebuf, | |
709 | &dmesg_notif_iter->linebuf_len, dmesg_notif_iter->fp); | |
710 | if (len < 0) { | |
711 | if (errno == EINVAL) { | |
d4393e08 | 712 | status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; |
33ec5dfa | 713 | } else if (errno == ENOMEM) { |
d4393e08 | 714 | status = |
33ec5dfa PP |
715 | BT_NOTIFICATION_ITERATOR_STATUS_NOMEM; |
716 | } else { | |
312c056a PP |
717 | if (dmesg_notif_iter->state == STATE_EMIT_STREAM_BEGINNING) { |
718 | /* Stream did not even begin */ | |
d4393e08 | 719 | status = BT_NOTIFICATION_ITERATOR_STATUS_END; |
312c056a PP |
720 | goto end; |
721 | } else { | |
722 | /* End current packet now */ | |
723 | dmesg_notif_iter->state = | |
724 | STATE_EMIT_PACKET_END; | |
725 | goto handle_state; | |
726 | } | |
33ec5dfa PP |
727 | } |
728 | ||
729 | goto end; | |
730 | } | |
731 | ||
f6ccaed9 | 732 | BT_ASSERT(dmesg_notif_iter->linebuf); |
33ec5dfa PP |
733 | |
734 | /* Ignore empty lines, once trimmed */ | |
735 | for (ch = dmesg_notif_iter->linebuf; *ch != '\0'; ch++) { | |
736 | if (!isspace(*ch)) { | |
737 | only_spaces = false; | |
738 | break; | |
739 | } | |
740 | } | |
741 | ||
742 | if (!only_spaces) { | |
743 | break; | |
744 | } | |
745 | } | |
746 | ||
f0010051 PP |
747 | dmesg_notif_iter->tmp_event_notif = create_notif_from_line( |
748 | dmesg_notif_iter, dmesg_notif_iter->linebuf); | |
312c056a | 749 | if (!dmesg_notif_iter->tmp_event_notif) { |
33ec5dfa PP |
750 | BT_LOGE("Cannot create event notification from line: " |
751 | "dmesg-comp-addr=%p, line=\"%s\"", dmesg_comp, | |
752 | dmesg_notif_iter->linebuf); | |
312c056a PP |
753 | goto end; |
754 | } | |
755 | ||
756 | handle_state: | |
757 | BT_ASSERT(dmesg_comp->trace); | |
758 | ||
759 | switch (dmesg_notif_iter->state) { | |
760 | case STATE_EMIT_STREAM_BEGINNING: | |
761 | BT_ASSERT(dmesg_notif_iter->tmp_event_notif); | |
d4393e08 | 762 | *notif = bt_notification_stream_begin_create( |
f0010051 | 763 | dmesg_notif_iter->pc_notif_iter, dmesg_comp->stream); |
312c056a PP |
764 | dmesg_notif_iter->state = STATE_EMIT_PACKET_BEGINNING; |
765 | break; | |
766 | case STATE_EMIT_PACKET_BEGINNING: | |
767 | BT_ASSERT(dmesg_notif_iter->tmp_event_notif); | |
d4393e08 | 768 | *notif = bt_notification_packet_begin_create( |
f0010051 | 769 | dmesg_notif_iter->pc_notif_iter, dmesg_comp->packet); |
312c056a PP |
770 | dmesg_notif_iter->state = STATE_EMIT_EVENT; |
771 | break; | |
772 | case STATE_EMIT_EVENT: | |
773 | BT_ASSERT(dmesg_notif_iter->tmp_event_notif); | |
d4393e08 PP |
774 | *notif = dmesg_notif_iter->tmp_event_notif; |
775 | dmesg_notif_iter->tmp_event_notif = NULL; | |
312c056a PP |
776 | break; |
777 | case STATE_EMIT_PACKET_END: | |
d4393e08 | 778 | *notif = bt_notification_packet_end_create( |
f0010051 | 779 | dmesg_notif_iter->pc_notif_iter, dmesg_comp->packet); |
312c056a PP |
780 | dmesg_notif_iter->state = STATE_EMIT_STREAM_END; |
781 | break; | |
782 | case STATE_EMIT_STREAM_END: | |
d4393e08 | 783 | *notif = bt_notification_stream_end_create( |
f0010051 | 784 | dmesg_notif_iter->pc_notif_iter, dmesg_comp->stream); |
312c056a PP |
785 | dmesg_notif_iter->state = STATE_DONE; |
786 | break; | |
787 | default: | |
788 | break; | |
789 | } | |
790 | ||
d4393e08 | 791 | if (!*notif) { |
312c056a PP |
792 | BT_LOGE("Cannot create notification: dmesg-comp-addr=%p", |
793 | dmesg_comp); | |
d4393e08 | 794 | status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; |
33ec5dfa PP |
795 | } |
796 | ||
797 | end: | |
d4393e08 PP |
798 | return status; |
799 | } | |
800 | ||
801 | BT_HIDDEN | |
802 | enum bt_notification_iterator_status dmesg_notif_iter_next( | |
803 | struct bt_private_connection_private_notification_iterator *priv_notif_iter, | |
804 | bt_notification_array notifs, uint64_t capacity, | |
805 | uint64_t *count) | |
806 | { | |
807 | struct dmesg_notif_iter *dmesg_notif_iter = | |
808 | bt_private_connection_private_notification_iterator_get_user_data( | |
809 | priv_notif_iter); | |
810 | enum bt_notification_iterator_status status = | |
811 | BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
812 | uint64_t i = 0; | |
813 | ||
814 | while (i < capacity && status == BT_NOTIFICATION_ITERATOR_STATUS_OK) { | |
815 | status = dmesg_notif_iter_next_one(dmesg_notif_iter, ¬ifs[i]); | |
816 | if (status == BT_NOTIFICATION_ITERATOR_STATUS_OK) { | |
817 | i++; | |
818 | } | |
819 | } | |
820 | ||
821 | if (i > 0) { | |
822 | /* | |
823 | * Even if dmesg_notif_iter_next_one() returned | |
824 | * something else than | |
825 | * BT_NOTIFICATION_ITERATOR_STATUS_OK, we accumulated | |
826 | * notification objects in the output notification | |
827 | * array, so we need to return | |
828 | * BT_NOTIFICATION_ITERATOR_STATUS_OK so that they are | |
829 | * transfered to downstream. This other status occurs | |
830 | * again the next time muxer_notif_iter_do_next() is | |
831 | * called, possibly without any accumulated | |
832 | * notification, in which case we'll return it. | |
833 | */ | |
834 | *count = i; | |
835 | status = BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
836 | } | |
837 | ||
838 | return status; | |
d8866baa | 839 | } |