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c19092cd | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
c19092cd | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: LGPL-2.1-only |
c19092cd | 5 | * |
c19092cd JG |
6 | */ |
7 | ||
6a751b95 JR |
8 | #include <assert.h> |
9 | #include <common/error.h> | |
10 | #include <common/macros.h> | |
11 | #include <common/mi-lttng.h> | |
c19092cd JG |
12 | #include <lttng/condition/condition-internal.h> |
13 | #include <lttng/condition/session-rotation-internal.h> | |
14 | #include <lttng/location-internal.h> | |
c19092cd JG |
15 | #include <stdbool.h> |
16 | ||
17 | static | |
18 | bool lttng_condition_session_rotation_validate( | |
19 | const struct lttng_condition *condition); | |
20 | static | |
21 | int lttng_condition_session_rotation_serialize( | |
22 | const struct lttng_condition *condition, | |
c0a66c84 | 23 | struct lttng_payload *payload); |
c19092cd JG |
24 | static |
25 | bool lttng_condition_session_rotation_is_equal(const struct lttng_condition *_a, | |
26 | const struct lttng_condition *_b); | |
27 | static | |
28 | void lttng_condition_session_rotation_destroy( | |
29 | struct lttng_condition *condition); | |
30 | ||
6a751b95 JR |
31 | static |
32 | enum lttng_error_code lttng_condition_session_rotation_mi_serialize( | |
33 | const struct lttng_condition *condition, | |
34 | struct mi_writer *writer); | |
35 | ||
c19092cd JG |
36 | static const |
37 | struct lttng_condition rotation_condition_template = { | |
38 | /* .type omitted; shall be set on creation. */ | |
39 | .validate = lttng_condition_session_rotation_validate, | |
40 | .serialize = lttng_condition_session_rotation_serialize, | |
41 | .equal = lttng_condition_session_rotation_is_equal, | |
42 | .destroy = lttng_condition_session_rotation_destroy, | |
6a751b95 | 43 | .mi_serialize = lttng_condition_session_rotation_mi_serialize, |
c19092cd JG |
44 | }; |
45 | ||
46 | static | |
47 | int lttng_evaluation_session_rotation_serialize( | |
48 | const struct lttng_evaluation *evaluation, | |
c0a66c84 | 49 | struct lttng_payload *payload); |
c19092cd JG |
50 | static |
51 | void lttng_evaluation_session_rotation_destroy( | |
52 | struct lttng_evaluation *evaluation); | |
53 | ||
54 | static const | |
55 | struct lttng_evaluation rotation_evaluation_template = { | |
56 | /* .type omitted; shall be set on creation. */ | |
57 | .serialize = lttng_evaluation_session_rotation_serialize, | |
58 | .destroy = lttng_evaluation_session_rotation_destroy, | |
59 | }; | |
60 | ||
61 | static | |
62 | bool is_rotation_condition(const struct lttng_condition *condition) | |
63 | { | |
64 | enum lttng_condition_type type = lttng_condition_get_type(condition); | |
65 | ||
66 | return type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING || | |
67 | type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED; | |
68 | } | |
69 | ||
70 | static | |
71 | bool is_rotation_evaluation(const struct lttng_evaluation *evaluation) | |
72 | { | |
73 | enum lttng_condition_type type = lttng_evaluation_get_type(evaluation); | |
74 | ||
75 | return type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING || | |
76 | type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED; | |
77 | } | |
78 | ||
79 | static | |
80 | bool lttng_condition_session_rotation_validate( | |
81 | const struct lttng_condition *condition) | |
82 | { | |
83 | bool valid = false; | |
84 | struct lttng_condition_session_rotation *rotation; | |
85 | ||
86 | if (!condition) { | |
87 | goto end; | |
88 | } | |
89 | ||
90 | rotation = container_of(condition, | |
91 | struct lttng_condition_session_rotation, parent); | |
92 | if (!rotation->session_name) { | |
93 | ERR("Invalid session rotation condition: a target session name must be set."); | |
94 | goto end; | |
95 | } | |
96 | ||
97 | valid = true; | |
98 | end: | |
99 | return valid; | |
100 | } | |
101 | ||
102 | static | |
103 | int lttng_condition_session_rotation_serialize( | |
104 | const struct lttng_condition *condition, | |
c0a66c84 | 105 | struct lttng_payload *payload) |
c19092cd JG |
106 | { |
107 | int ret; | |
108 | size_t session_name_len; | |
109 | struct lttng_condition_session_rotation *rotation; | |
110 | struct lttng_condition_session_rotation_comm rotation_comm; | |
111 | ||
112 | if (!condition || !is_rotation_condition(condition)) { | |
113 | ret = -1; | |
114 | goto end; | |
115 | } | |
116 | ||
117 | DBG("Serializing session rotation condition"); | |
118 | rotation = container_of(condition, struct lttng_condition_session_rotation, | |
119 | parent); | |
120 | ||
121 | session_name_len = strlen(rotation->session_name) + 1; | |
122 | if (session_name_len > LTTNG_NAME_MAX) { | |
123 | ret = -1; | |
124 | goto end; | |
125 | } | |
126 | ||
127 | rotation_comm.session_name_len = session_name_len; | |
c0a66c84 | 128 | ret = lttng_dynamic_buffer_append(&payload->buffer, &rotation_comm, |
c19092cd JG |
129 | sizeof(rotation_comm)); |
130 | if (ret) { | |
131 | goto end; | |
132 | } | |
c0a66c84 JG |
133 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
134 | rotation->session_name, session_name_len); | |
c19092cd JG |
135 | if (ret) { |
136 | goto end; | |
137 | } | |
138 | end: | |
139 | return ret; | |
140 | } | |
141 | ||
142 | static | |
143 | bool lttng_condition_session_rotation_is_equal(const struct lttng_condition *_a, | |
144 | const struct lttng_condition *_b) | |
145 | { | |
146 | bool is_equal = false; | |
147 | struct lttng_condition_session_rotation *a, *b; | |
148 | ||
149 | a = container_of(_a, struct lttng_condition_session_rotation, parent); | |
150 | b = container_of(_b, struct lttng_condition_session_rotation, parent); | |
151 | ||
152 | /* Both session names must be set or both must be unset. */ | |
153 | if ((a->session_name && !b->session_name) || | |
154 | (!a->session_name && b->session_name)) { | |
155 | WARN("Comparing session rotation conditions with uninitialized session names."); | |
156 | goto end; | |
157 | } | |
158 | ||
159 | if (a->session_name && b->session_name && | |
160 | strcmp(a->session_name, b->session_name)) { | |
161 | goto end; | |
162 | } | |
163 | ||
164 | is_equal = true; | |
165 | end: | |
166 | return is_equal; | |
167 | } | |
168 | ||
169 | static | |
170 | void lttng_condition_session_rotation_destroy( | |
171 | struct lttng_condition *condition) | |
172 | { | |
173 | struct lttng_condition_session_rotation *rotation; | |
174 | ||
175 | rotation = container_of(condition, | |
176 | struct lttng_condition_session_rotation, parent); | |
177 | ||
178 | free(rotation->session_name); | |
179 | free(rotation); | |
180 | } | |
181 | ||
182 | static | |
183 | struct lttng_condition *lttng_condition_session_rotation_create( | |
184 | enum lttng_condition_type type) | |
185 | { | |
186 | struct lttng_condition_session_rotation *condition; | |
187 | ||
188 | condition = zmalloc(sizeof(struct lttng_condition_session_rotation)); | |
189 | if (!condition) { | |
190 | return NULL; | |
191 | } | |
192 | ||
193 | memcpy(&condition->parent, &rotation_condition_template, | |
a38478c9 | 194 | sizeof(condition->parent)); |
c19092cd JG |
195 | lttng_condition_init(&condition->parent, type); |
196 | return &condition->parent; | |
197 | } | |
198 | ||
199 | struct lttng_condition *lttng_condition_session_rotation_ongoing_create(void) | |
200 | { | |
201 | return lttng_condition_session_rotation_create( | |
202 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING); | |
203 | } | |
204 | ||
205 | struct lttng_condition *lttng_condition_session_rotation_completed_create(void) | |
206 | { | |
207 | return lttng_condition_session_rotation_create( | |
208 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED); | |
209 | } | |
210 | ||
211 | static | |
c0a66c84 JG |
212 | ssize_t init_condition_from_payload(struct lttng_condition *condition, |
213 | struct lttng_payload_view *src_view) | |
c19092cd JG |
214 | { |
215 | ssize_t ret, condition_size; | |
216 | enum lttng_condition_status status; | |
c19092cd JG |
217 | const char *session_name; |
218 | struct lttng_buffer_view name_view; | |
3e6e0df2 JG |
219 | const struct lttng_condition_session_rotation_comm *condition_comm; |
220 | struct lttng_payload_view condition_comm_view = | |
221 | lttng_payload_view_from_view( | |
222 | src_view, 0, sizeof(*condition_comm)); | |
c19092cd | 223 | |
3e6e0df2 | 224 | if (!lttng_payload_view_is_valid(&condition_comm_view)) { |
c19092cd JG |
225 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain header"); |
226 | ret = -1; | |
227 | goto end; | |
228 | } | |
229 | ||
c0a66c84 JG |
230 | condition_comm = (typeof(condition_comm)) src_view->buffer.data; |
231 | name_view = lttng_buffer_view_from_view(&src_view->buffer, | |
3e6e0df2 | 232 | sizeof(*condition_comm), condition_comm->session_name_len); |
c19092cd | 233 | |
3e6e0df2 JG |
234 | if (!lttng_buffer_view_is_valid(&name_view)) { |
235 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain session name"); | |
c19092cd JG |
236 | ret = -1; |
237 | goto end; | |
238 | } | |
239 | ||
3e6e0df2 JG |
240 | if (condition_comm->session_name_len > LTTNG_NAME_MAX) { |
241 | ERR("Failed to initialize from malformed condition buffer: name exceeds LTTNG_MAX_NAME"); | |
c19092cd JG |
242 | ret = -1; |
243 | goto end; | |
244 | } | |
245 | ||
246 | session_name = name_view.data; | |
247 | if (*(session_name + condition_comm->session_name_len - 1) != '\0') { | |
248 | ERR("Malformed session name encountered in condition buffer"); | |
249 | ret = -1; | |
250 | goto end; | |
251 | } | |
252 | ||
253 | status = lttng_condition_session_rotation_set_session_name(condition, | |
254 | session_name); | |
255 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
256 | ERR("Failed to set buffer consumed session name"); | |
257 | ret = -1; | |
258 | goto end; | |
259 | } | |
260 | ||
261 | if (!lttng_condition_validate(condition)) { | |
262 | ret = -1; | |
263 | goto end; | |
264 | } | |
265 | ||
266 | condition_size = sizeof(*condition_comm) + | |
267 | (ssize_t) condition_comm->session_name_len; | |
268 | ret = condition_size; | |
269 | end: | |
270 | return ret; | |
271 | } | |
272 | ||
273 | static | |
c0a66c84 JG |
274 | ssize_t lttng_condition_session_rotation_create_from_payload( |
275 | struct lttng_payload_view *view, | |
c19092cd JG |
276 | struct lttng_condition **_condition, |
277 | enum lttng_condition_type type) | |
278 | { | |
279 | ssize_t ret; | |
280 | struct lttng_condition *condition = NULL; | |
281 | ||
282 | switch (type) { | |
283 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING: | |
284 | condition = lttng_condition_session_rotation_ongoing_create(); | |
285 | break; | |
286 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED: | |
287 | condition = lttng_condition_session_rotation_completed_create(); | |
288 | break; | |
289 | default: | |
290 | ret = -1; | |
291 | goto error; | |
292 | } | |
293 | ||
294 | if (!_condition || !condition) { | |
295 | ret = -1; | |
296 | goto error; | |
297 | } | |
298 | ||
c0a66c84 | 299 | ret = init_condition_from_payload(condition, view); |
c19092cd JG |
300 | if (ret < 0) { |
301 | goto error; | |
302 | } | |
303 | ||
304 | *_condition = condition; | |
305 | return ret; | |
306 | error: | |
307 | lttng_condition_destroy(condition); | |
308 | return ret; | |
309 | } | |
310 | ||
311 | LTTNG_HIDDEN | |
c0a66c84 JG |
312 | ssize_t lttng_condition_session_rotation_ongoing_create_from_payload( |
313 | struct lttng_payload_view *view, | |
c19092cd JG |
314 | struct lttng_condition **condition) |
315 | { | |
c0a66c84 | 316 | return lttng_condition_session_rotation_create_from_payload(view, |
c19092cd JG |
317 | condition, |
318 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING); | |
319 | } | |
320 | ||
321 | LTTNG_HIDDEN | |
c0a66c84 JG |
322 | ssize_t lttng_condition_session_rotation_completed_create_from_payload( |
323 | struct lttng_payload_view *view, | |
c19092cd JG |
324 | struct lttng_condition **condition) |
325 | { | |
c0a66c84 | 326 | return lttng_condition_session_rotation_create_from_payload(view, |
c19092cd JG |
327 | condition, |
328 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED); | |
329 | } | |
330 | ||
331 | static | |
332 | struct lttng_evaluation *lttng_evaluation_session_rotation_create( | |
333 | enum lttng_condition_type type, uint64_t id, | |
334 | struct lttng_trace_archive_location *location) | |
335 | { | |
336 | struct lttng_evaluation_session_rotation *evaluation; | |
337 | ||
338 | evaluation = zmalloc(sizeof(struct lttng_evaluation_session_rotation)); | |
339 | if (!evaluation) { | |
340 | return NULL; | |
341 | } | |
342 | ||
343 | memcpy(&evaluation->parent, &rotation_evaluation_template, | |
a38478c9 | 344 | sizeof(evaluation->parent)); |
c19092cd JG |
345 | lttng_evaluation_init(&evaluation->parent, type); |
346 | evaluation->id = id; | |
d3740619 JR |
347 | if (location) { |
348 | lttng_trace_archive_location_get(location); | |
349 | } | |
c19092cd JG |
350 | evaluation->location = location; |
351 | return &evaluation->parent; | |
352 | } | |
353 | ||
354 | static | |
c0a66c84 | 355 | ssize_t create_evaluation_from_payload( |
c19092cd | 356 | enum lttng_condition_type type, |
c0a66c84 | 357 | struct lttng_payload_view *view, |
c19092cd JG |
358 | struct lttng_evaluation **_evaluation) |
359 | { | |
360 | ssize_t ret, size; | |
361 | struct lttng_evaluation *evaluation = NULL; | |
362 | struct lttng_trace_archive_location *location = NULL; | |
3e6e0df2 JG |
363 | const struct lttng_evaluation_session_rotation_comm *comm; |
364 | struct lttng_payload_view comm_view = lttng_payload_view_from_view( | |
365 | view, 0, sizeof(*comm)); | |
c19092cd | 366 | |
3e6e0df2 | 367 | if (!lttng_payload_view_is_valid(&comm_view)) { |
c19092cd JG |
368 | goto error; |
369 | } | |
370 | ||
3e6e0df2 | 371 | comm = (typeof(comm)) comm_view.buffer.data; |
c19092cd JG |
372 | size = sizeof(*comm); |
373 | if (comm->has_location) { | |
3e6e0df2 JG |
374 | const struct lttng_buffer_view location_view = |
375 | lttng_buffer_view_from_view( | |
376 | &view->buffer, sizeof(*comm), -1); | |
377 | ||
378 | if (!lttng_buffer_view_is_valid(&location_view)) { | |
c19092cd JG |
379 | goto error; |
380 | } | |
381 | ||
382 | ret = lttng_trace_archive_location_create_from_buffer( | |
383 | &location_view, &location); | |
384 | if (ret < 0) { | |
385 | goto error; | |
386 | } | |
387 | size += ret; | |
388 | } | |
389 | ||
390 | evaluation = lttng_evaluation_session_rotation_create(type, comm->id, | |
391 | location); | |
392 | if (!evaluation) { | |
393 | goto error; | |
394 | } | |
395 | ||
d3740619 | 396 | lttng_trace_archive_location_put(location); |
c19092cd JG |
397 | ret = size; |
398 | *_evaluation = evaluation; | |
399 | return ret; | |
400 | error: | |
d3740619 | 401 | lttng_trace_archive_location_put(location); |
c19092cd JG |
402 | evaluation = NULL; |
403 | return -1; | |
404 | } | |
405 | ||
406 | static | |
c0a66c84 | 407 | ssize_t lttng_evaluation_session_rotation_create_from_payload( |
c19092cd | 408 | enum lttng_condition_type type, |
c0a66c84 | 409 | struct lttng_payload_view *view, |
c19092cd JG |
410 | struct lttng_evaluation **_evaluation) |
411 | { | |
412 | ssize_t ret; | |
413 | struct lttng_evaluation *evaluation = NULL; | |
414 | ||
415 | if (!_evaluation) { | |
416 | ret = -1; | |
417 | goto error; | |
418 | } | |
419 | ||
c0a66c84 | 420 | ret = create_evaluation_from_payload(type, view, &evaluation); |
c19092cd JG |
421 | if (ret < 0) { |
422 | goto error; | |
423 | } | |
424 | ||
425 | *_evaluation = evaluation; | |
426 | return ret; | |
427 | error: | |
428 | lttng_evaluation_destroy(evaluation); | |
429 | return ret; | |
430 | } | |
431 | ||
432 | LTTNG_HIDDEN | |
c0a66c84 JG |
433 | ssize_t lttng_evaluation_session_rotation_ongoing_create_from_payload( |
434 | struct lttng_payload_view *view, | |
c19092cd JG |
435 | struct lttng_evaluation **evaluation) |
436 | { | |
c0a66c84 | 437 | return lttng_evaluation_session_rotation_create_from_payload( |
c19092cd JG |
438 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING, |
439 | view, evaluation); | |
440 | } | |
441 | ||
442 | LTTNG_HIDDEN | |
c0a66c84 JG |
443 | ssize_t lttng_evaluation_session_rotation_completed_create_from_payload( |
444 | struct lttng_payload_view *view, | |
c19092cd JG |
445 | struct lttng_evaluation **evaluation) |
446 | { | |
c0a66c84 | 447 | return lttng_evaluation_session_rotation_create_from_payload( |
c19092cd JG |
448 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED, |
449 | view, evaluation); | |
450 | } | |
451 | ||
452 | LTTNG_HIDDEN | |
453 | struct lttng_evaluation *lttng_evaluation_session_rotation_ongoing_create( | |
454 | uint64_t id) | |
455 | { | |
456 | return lttng_evaluation_session_rotation_create( | |
457 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING, id, | |
458 | NULL); | |
459 | } | |
460 | ||
461 | LTTNG_HIDDEN | |
462 | struct lttng_evaluation *lttng_evaluation_session_rotation_completed_create( | |
463 | uint64_t id, struct lttng_trace_archive_location *location) | |
464 | { | |
465 | return lttng_evaluation_session_rotation_create( | |
466 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED, id, | |
467 | location); | |
468 | } | |
469 | ||
470 | enum lttng_condition_status | |
471 | lttng_condition_session_rotation_get_session_name( | |
472 | const struct lttng_condition *condition, | |
473 | const char **session_name) | |
474 | { | |
475 | struct lttng_condition_session_rotation *rotation; | |
476 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
477 | ||
478 | if (!condition || !is_rotation_condition(condition) || !session_name) { | |
479 | status = LTTNG_CONDITION_STATUS_INVALID; | |
480 | goto end; | |
481 | } | |
482 | ||
483 | rotation = container_of(condition, struct lttng_condition_session_rotation, | |
484 | parent); | |
485 | if (!rotation->session_name) { | |
486 | status = LTTNG_CONDITION_STATUS_UNSET; | |
487 | goto end; | |
488 | } | |
489 | *session_name = rotation->session_name; | |
490 | end: | |
491 | return status; | |
492 | } | |
493 | ||
494 | enum lttng_condition_status | |
495 | lttng_condition_session_rotation_set_session_name( | |
496 | struct lttng_condition *condition, const char *session_name) | |
497 | { | |
498 | char *session_name_copy; | |
499 | struct lttng_condition_session_rotation *rotation; | |
500 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
501 | ||
502 | if (!condition || !is_rotation_condition(condition) || | |
503 | !session_name || strlen(session_name) == 0) { | |
504 | status = LTTNG_CONDITION_STATUS_INVALID; | |
505 | goto end; | |
506 | } | |
507 | ||
508 | rotation = container_of(condition, | |
509 | struct lttng_condition_session_rotation, parent); | |
510 | session_name_copy = strdup(session_name); | |
511 | if (!session_name_copy) { | |
512 | status = LTTNG_CONDITION_STATUS_ERROR; | |
513 | goto end; | |
514 | } | |
515 | ||
516 | free(rotation->session_name); | |
517 | rotation->session_name = session_name_copy; | |
518 | end: | |
519 | return status; | |
520 | } | |
521 | ||
522 | static | |
523 | int lttng_evaluation_session_rotation_serialize( | |
524 | const struct lttng_evaluation *evaluation, | |
c0a66c84 | 525 | struct lttng_payload *payload) |
c19092cd JG |
526 | { |
527 | int ret; | |
528 | struct lttng_evaluation_session_rotation *rotation; | |
529 | struct lttng_evaluation_session_rotation_comm comm = { 0 }; | |
530 | ||
531 | rotation = container_of(evaluation, | |
532 | struct lttng_evaluation_session_rotation, parent); | |
533 | comm.id = rotation->id; | |
534 | comm.has_location = !!rotation->location; | |
c0a66c84 JG |
535 | ret = lttng_dynamic_buffer_append( |
536 | &payload->buffer, &comm, sizeof(comm)); | |
c19092cd JG |
537 | if (ret) { |
538 | goto end; | |
539 | } | |
540 | if (!rotation->location) { | |
541 | goto end; | |
542 | } | |
543 | ret = lttng_trace_archive_location_serialize(rotation->location, | |
c0a66c84 | 544 | &payload->buffer); |
c19092cd JG |
545 | end: |
546 | return ret; | |
547 | } | |
548 | ||
549 | static | |
550 | void lttng_evaluation_session_rotation_destroy( | |
551 | struct lttng_evaluation *evaluation) | |
552 | { | |
553 | struct lttng_evaluation_session_rotation *rotation; | |
554 | ||
555 | rotation = container_of(evaluation, | |
556 | struct lttng_evaluation_session_rotation, parent); | |
d3740619 | 557 | lttng_trace_archive_location_put(rotation->location); |
c19092cd JG |
558 | free(rotation); |
559 | } | |
560 | ||
561 | enum lttng_evaluation_status | |
562 | lttng_evaluation_session_rotation_get_id( | |
563 | const struct lttng_evaluation *evaluation, uint64_t *id) | |
564 | { | |
565 | const struct lttng_evaluation_session_rotation *rotation; | |
566 | enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK; | |
567 | ||
568 | if (!evaluation || !id || !is_rotation_evaluation(evaluation)) { | |
569 | status = LTTNG_EVALUATION_STATUS_INVALID; | |
570 | goto end; | |
571 | } | |
572 | ||
573 | rotation = container_of(evaluation, | |
574 | struct lttng_evaluation_session_rotation, parent); | |
575 | *id = rotation->id; | |
576 | end: | |
577 | return status; | |
578 | } | |
579 | ||
d3740619 JR |
580 | /* |
581 | * The public API assumes that trace archive locations are always provided as | |
582 | * "constant". This means that the user of liblttng-ctl never has to destroy a | |
583 | * trace archive location. Hence, users of liblttng-ctl have no visibility of | |
584 | * the reference counting of archive locations. | |
585 | */ | |
c19092cd JG |
586 | enum lttng_evaluation_status |
587 | lttng_evaluation_session_rotation_completed_get_location( | |
588 | const struct lttng_evaluation *evaluation, | |
589 | const struct lttng_trace_archive_location **location) | |
590 | { | |
591 | const struct lttng_evaluation_session_rotation *rotation; | |
592 | enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK; | |
593 | ||
594 | if (!evaluation || !location || | |
595 | evaluation->type != LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED) { | |
596 | status = LTTNG_EVALUATION_STATUS_INVALID; | |
597 | goto end; | |
598 | } | |
599 | ||
600 | rotation = container_of(evaluation, | |
601 | struct lttng_evaluation_session_rotation, parent); | |
602 | *location = rotation->location; | |
603 | end: | |
604 | return status; | |
605 | } | |
6a751b95 JR |
606 | |
607 | static | |
608 | enum lttng_error_code lttng_condition_session_rotation_mi_serialize( | |
609 | const struct lttng_condition *condition, | |
610 | struct mi_writer *writer) | |
611 | { | |
612 | int ret; | |
613 | enum lttng_error_code ret_code; | |
614 | enum lttng_condition_status status; | |
615 | const char *session_name = NULL; | |
616 | const char *type_element_str = NULL; | |
617 | ||
618 | assert(condition); | |
619 | assert(writer); | |
620 | assert(is_rotation_condition(condition)); | |
621 | ||
622 | switch (lttng_condition_get_type(condition)) { | |
623 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED: | |
624 | type_element_str = | |
625 | mi_lttng_element_condition_session_rotation_completed; | |
626 | break; | |
627 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING: | |
628 | type_element_str = | |
629 | mi_lttng_element_condition_session_rotation_ongoing; | |
630 | break; | |
631 | default: | |
632 | abort(); | |
633 | break; | |
634 | } | |
635 | ||
636 | status = lttng_condition_session_rotation_get_session_name( | |
637 | condition, &session_name); | |
638 | assert(status == LTTNG_CONDITION_STATUS_OK); | |
639 | assert(session_name); | |
640 | ||
641 | /* Open condition session rotation_* element. */ | |
642 | ret = mi_lttng_writer_open_element(writer, type_element_str); | |
643 | if (ret) { | |
644 | goto mi_error; | |
645 | } | |
646 | ||
647 | /* Session name. */ | |
648 | ret = mi_lttng_writer_write_element_string( | |
649 | writer, mi_lttng_element_session_name, session_name); | |
650 | if (ret) { | |
651 | goto mi_error; | |
652 | } | |
653 | ||
654 | /* Close condition session rotation element. */ | |
655 | ret = mi_lttng_writer_close_element(writer); | |
656 | if (ret) { | |
657 | goto mi_error; | |
658 | } | |
659 | ||
660 | ret_code = LTTNG_OK; | |
661 | goto end; | |
662 | ||
663 | mi_error: | |
664 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
665 | end: | |
666 | return ret_code; | |
667 | } |