Commit | Line | Data |
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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 <common/error.h> |
9 | #include <common/macros.h> | |
10 | #include <common/mi-lttng.h> | |
c19092cd JG |
11 | #include <lttng/condition/condition-internal.h> |
12 | #include <lttng/condition/session-rotation-internal.h> | |
13 | #include <lttng/location-internal.h> | |
c19092cd JG |
14 | #include <stdbool.h> |
15 | ||
16 | static | |
17 | bool lttng_condition_session_rotation_validate( | |
18 | const struct lttng_condition *condition); | |
19 | static | |
20 | int lttng_condition_session_rotation_serialize( | |
21 | const struct lttng_condition *condition, | |
c0a66c84 | 22 | struct lttng_payload *payload); |
c19092cd JG |
23 | static |
24 | bool lttng_condition_session_rotation_is_equal(const struct lttng_condition *_a, | |
25 | const struct lttng_condition *_b); | |
26 | static | |
27 | void lttng_condition_session_rotation_destroy( | |
28 | struct lttng_condition *condition); | |
29 | ||
6a751b95 JR |
30 | static |
31 | enum lttng_error_code lttng_condition_session_rotation_mi_serialize( | |
32 | const struct lttng_condition *condition, | |
33 | struct mi_writer *writer); | |
34 | ||
c19092cd JG |
35 | static const |
36 | struct lttng_condition rotation_condition_template = { | |
37 | /* .type omitted; shall be set on creation. */ | |
38 | .validate = lttng_condition_session_rotation_validate, | |
39 | .serialize = lttng_condition_session_rotation_serialize, | |
40 | .equal = lttng_condition_session_rotation_is_equal, | |
41 | .destroy = lttng_condition_session_rotation_destroy, | |
6a751b95 | 42 | .mi_serialize = lttng_condition_session_rotation_mi_serialize, |
c19092cd JG |
43 | }; |
44 | ||
45 | static | |
46 | int lttng_evaluation_session_rotation_serialize( | |
47 | const struct lttng_evaluation *evaluation, | |
c0a66c84 | 48 | struct lttng_payload *payload); |
c19092cd JG |
49 | static |
50 | void lttng_evaluation_session_rotation_destroy( | |
51 | struct lttng_evaluation *evaluation); | |
52 | ||
53 | static const | |
54 | struct lttng_evaluation rotation_evaluation_template = { | |
55 | /* .type omitted; shall be set on creation. */ | |
56 | .serialize = lttng_evaluation_session_rotation_serialize, | |
57 | .destroy = lttng_evaluation_session_rotation_destroy, | |
58 | }; | |
59 | ||
60 | static | |
61 | bool is_rotation_condition(const struct lttng_condition *condition) | |
62 | { | |
63 | enum lttng_condition_type type = lttng_condition_get_type(condition); | |
64 | ||
65 | return type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING || | |
66 | type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED; | |
67 | } | |
68 | ||
69 | static | |
70 | bool is_rotation_evaluation(const struct lttng_evaluation *evaluation) | |
71 | { | |
72 | enum lttng_condition_type type = lttng_evaluation_get_type(evaluation); | |
73 | ||
74 | return type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING || | |
75 | type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED; | |
76 | } | |
77 | ||
78 | static | |
79 | bool lttng_condition_session_rotation_validate( | |
80 | const struct lttng_condition *condition) | |
81 | { | |
82 | bool valid = false; | |
83 | struct lttng_condition_session_rotation *rotation; | |
84 | ||
85 | if (!condition) { | |
86 | goto end; | |
87 | } | |
88 | ||
89 | rotation = container_of(condition, | |
90 | struct lttng_condition_session_rotation, parent); | |
91 | if (!rotation->session_name) { | |
92 | ERR("Invalid session rotation condition: a target session name must be set."); | |
93 | goto end; | |
94 | } | |
95 | ||
96 | valid = true; | |
97 | end: | |
98 | return valid; | |
99 | } | |
100 | ||
101 | static | |
102 | int lttng_condition_session_rotation_serialize( | |
103 | const struct lttng_condition *condition, | |
c0a66c84 | 104 | struct lttng_payload *payload) |
c19092cd JG |
105 | { |
106 | int ret; | |
107 | size_t session_name_len; | |
108 | struct lttng_condition_session_rotation *rotation; | |
109 | struct lttng_condition_session_rotation_comm rotation_comm; | |
110 | ||
111 | if (!condition || !is_rotation_condition(condition)) { | |
112 | ret = -1; | |
113 | goto end; | |
114 | } | |
115 | ||
116 | DBG("Serializing session rotation condition"); | |
117 | rotation = container_of(condition, struct lttng_condition_session_rotation, | |
118 | parent); | |
119 | ||
120 | session_name_len = strlen(rotation->session_name) + 1; | |
121 | if (session_name_len > LTTNG_NAME_MAX) { | |
122 | ret = -1; | |
123 | goto end; | |
124 | } | |
125 | ||
126 | rotation_comm.session_name_len = session_name_len; | |
c0a66c84 | 127 | ret = lttng_dynamic_buffer_append(&payload->buffer, &rotation_comm, |
c19092cd JG |
128 | sizeof(rotation_comm)); |
129 | if (ret) { | |
130 | goto end; | |
131 | } | |
c0a66c84 JG |
132 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
133 | rotation->session_name, session_name_len); | |
c19092cd JG |
134 | if (ret) { |
135 | goto end; | |
136 | } | |
137 | end: | |
138 | return ret; | |
139 | } | |
140 | ||
141 | static | |
142 | bool lttng_condition_session_rotation_is_equal(const struct lttng_condition *_a, | |
143 | const struct lttng_condition *_b) | |
144 | { | |
145 | bool is_equal = false; | |
146 | struct lttng_condition_session_rotation *a, *b; | |
147 | ||
148 | a = container_of(_a, struct lttng_condition_session_rotation, parent); | |
149 | b = container_of(_b, struct lttng_condition_session_rotation, parent); | |
150 | ||
151 | /* Both session names must be set or both must be unset. */ | |
152 | if ((a->session_name && !b->session_name) || | |
153 | (!a->session_name && b->session_name)) { | |
154 | WARN("Comparing session rotation conditions with uninitialized session names."); | |
155 | goto end; | |
156 | } | |
157 | ||
158 | if (a->session_name && b->session_name && | |
159 | strcmp(a->session_name, b->session_name)) { | |
160 | goto end; | |
161 | } | |
162 | ||
163 | is_equal = true; | |
164 | end: | |
165 | return is_equal; | |
166 | } | |
167 | ||
168 | static | |
169 | void lttng_condition_session_rotation_destroy( | |
170 | struct lttng_condition *condition) | |
171 | { | |
172 | struct lttng_condition_session_rotation *rotation; | |
173 | ||
174 | rotation = container_of(condition, | |
175 | struct lttng_condition_session_rotation, parent); | |
176 | ||
177 | free(rotation->session_name); | |
178 | free(rotation); | |
179 | } | |
180 | ||
181 | static | |
182 | struct lttng_condition *lttng_condition_session_rotation_create( | |
183 | enum lttng_condition_type type) | |
184 | { | |
185 | struct lttng_condition_session_rotation *condition; | |
186 | ||
187 | condition = zmalloc(sizeof(struct lttng_condition_session_rotation)); | |
188 | if (!condition) { | |
189 | return NULL; | |
190 | } | |
191 | ||
192 | memcpy(&condition->parent, &rotation_condition_template, | |
a38478c9 | 193 | sizeof(condition->parent)); |
c19092cd JG |
194 | lttng_condition_init(&condition->parent, type); |
195 | return &condition->parent; | |
196 | } | |
197 | ||
198 | struct lttng_condition *lttng_condition_session_rotation_ongoing_create(void) | |
199 | { | |
200 | return lttng_condition_session_rotation_create( | |
201 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING); | |
202 | } | |
203 | ||
204 | struct lttng_condition *lttng_condition_session_rotation_completed_create(void) | |
205 | { | |
206 | return lttng_condition_session_rotation_create( | |
207 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED); | |
208 | } | |
209 | ||
210 | static | |
c0a66c84 JG |
211 | ssize_t init_condition_from_payload(struct lttng_condition *condition, |
212 | struct lttng_payload_view *src_view) | |
c19092cd JG |
213 | { |
214 | ssize_t ret, condition_size; | |
215 | enum lttng_condition_status status; | |
c19092cd JG |
216 | const char *session_name; |
217 | struct lttng_buffer_view name_view; | |
3e6e0df2 JG |
218 | const struct lttng_condition_session_rotation_comm *condition_comm; |
219 | struct lttng_payload_view condition_comm_view = | |
220 | lttng_payload_view_from_view( | |
221 | src_view, 0, sizeof(*condition_comm)); | |
c19092cd | 222 | |
3e6e0df2 | 223 | if (!lttng_payload_view_is_valid(&condition_comm_view)) { |
c19092cd JG |
224 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain header"); |
225 | ret = -1; | |
226 | goto end; | |
227 | } | |
228 | ||
c0a66c84 JG |
229 | condition_comm = (typeof(condition_comm)) src_view->buffer.data; |
230 | name_view = lttng_buffer_view_from_view(&src_view->buffer, | |
3e6e0df2 | 231 | sizeof(*condition_comm), condition_comm->session_name_len); |
c19092cd | 232 | |
3e6e0df2 JG |
233 | if (!lttng_buffer_view_is_valid(&name_view)) { |
234 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain session name"); | |
c19092cd JG |
235 | ret = -1; |
236 | goto end; | |
237 | } | |
238 | ||
3e6e0df2 JG |
239 | if (condition_comm->session_name_len > LTTNG_NAME_MAX) { |
240 | ERR("Failed to initialize from malformed condition buffer: name exceeds LTTNG_MAX_NAME"); | |
c19092cd JG |
241 | ret = -1; |
242 | goto end; | |
243 | } | |
244 | ||
245 | session_name = name_view.data; | |
246 | if (*(session_name + condition_comm->session_name_len - 1) != '\0') { | |
247 | ERR("Malformed session name encountered in condition buffer"); | |
248 | ret = -1; | |
249 | goto end; | |
250 | } | |
251 | ||
252 | status = lttng_condition_session_rotation_set_session_name(condition, | |
253 | session_name); | |
254 | if (status != LTTNG_CONDITION_STATUS_OK) { | |
255 | ERR("Failed to set buffer consumed session name"); | |
256 | ret = -1; | |
257 | goto end; | |
258 | } | |
259 | ||
260 | if (!lttng_condition_validate(condition)) { | |
261 | ret = -1; | |
262 | goto end; | |
263 | } | |
264 | ||
265 | condition_size = sizeof(*condition_comm) + | |
266 | (ssize_t) condition_comm->session_name_len; | |
267 | ret = condition_size; | |
268 | end: | |
269 | return ret; | |
270 | } | |
271 | ||
272 | static | |
c0a66c84 JG |
273 | ssize_t lttng_condition_session_rotation_create_from_payload( |
274 | struct lttng_payload_view *view, | |
c19092cd JG |
275 | struct lttng_condition **_condition, |
276 | enum lttng_condition_type type) | |
277 | { | |
278 | ssize_t ret; | |
279 | struct lttng_condition *condition = NULL; | |
280 | ||
281 | switch (type) { | |
282 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING: | |
283 | condition = lttng_condition_session_rotation_ongoing_create(); | |
284 | break; | |
285 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED: | |
286 | condition = lttng_condition_session_rotation_completed_create(); | |
287 | break; | |
288 | default: | |
289 | ret = -1; | |
290 | goto error; | |
291 | } | |
292 | ||
293 | if (!_condition || !condition) { | |
294 | ret = -1; | |
295 | goto error; | |
296 | } | |
297 | ||
c0a66c84 | 298 | ret = init_condition_from_payload(condition, view); |
c19092cd JG |
299 | if (ret < 0) { |
300 | goto error; | |
301 | } | |
302 | ||
303 | *_condition = condition; | |
304 | return ret; | |
305 | error: | |
306 | lttng_condition_destroy(condition); | |
307 | return ret; | |
308 | } | |
309 | ||
c0a66c84 JG |
310 | ssize_t lttng_condition_session_rotation_ongoing_create_from_payload( |
311 | struct lttng_payload_view *view, | |
c19092cd JG |
312 | struct lttng_condition **condition) |
313 | { | |
c0a66c84 | 314 | return lttng_condition_session_rotation_create_from_payload(view, |
c19092cd JG |
315 | condition, |
316 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING); | |
317 | } | |
318 | ||
c0a66c84 JG |
319 | ssize_t lttng_condition_session_rotation_completed_create_from_payload( |
320 | struct lttng_payload_view *view, | |
c19092cd JG |
321 | struct lttng_condition **condition) |
322 | { | |
c0a66c84 | 323 | return lttng_condition_session_rotation_create_from_payload(view, |
c19092cd JG |
324 | condition, |
325 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED); | |
326 | } | |
327 | ||
328 | static | |
329 | struct lttng_evaluation *lttng_evaluation_session_rotation_create( | |
330 | enum lttng_condition_type type, uint64_t id, | |
331 | struct lttng_trace_archive_location *location) | |
332 | { | |
333 | struct lttng_evaluation_session_rotation *evaluation; | |
334 | ||
335 | evaluation = zmalloc(sizeof(struct lttng_evaluation_session_rotation)); | |
336 | if (!evaluation) { | |
337 | return NULL; | |
338 | } | |
339 | ||
340 | memcpy(&evaluation->parent, &rotation_evaluation_template, | |
a38478c9 | 341 | sizeof(evaluation->parent)); |
c19092cd JG |
342 | lttng_evaluation_init(&evaluation->parent, type); |
343 | evaluation->id = id; | |
d3740619 JR |
344 | if (location) { |
345 | lttng_trace_archive_location_get(location); | |
346 | } | |
c19092cd JG |
347 | evaluation->location = location; |
348 | return &evaluation->parent; | |
349 | } | |
350 | ||
351 | static | |
c0a66c84 | 352 | ssize_t create_evaluation_from_payload( |
c19092cd | 353 | enum lttng_condition_type type, |
c0a66c84 | 354 | struct lttng_payload_view *view, |
c19092cd JG |
355 | struct lttng_evaluation **_evaluation) |
356 | { | |
357 | ssize_t ret, size; | |
358 | struct lttng_evaluation *evaluation = NULL; | |
359 | struct lttng_trace_archive_location *location = NULL; | |
3e6e0df2 JG |
360 | const struct lttng_evaluation_session_rotation_comm *comm; |
361 | struct lttng_payload_view comm_view = lttng_payload_view_from_view( | |
362 | view, 0, sizeof(*comm)); | |
c19092cd | 363 | |
3e6e0df2 | 364 | if (!lttng_payload_view_is_valid(&comm_view)) { |
c19092cd JG |
365 | goto error; |
366 | } | |
367 | ||
3e6e0df2 | 368 | comm = (typeof(comm)) comm_view.buffer.data; |
c19092cd JG |
369 | size = sizeof(*comm); |
370 | if (comm->has_location) { | |
3e6e0df2 JG |
371 | const struct lttng_buffer_view location_view = |
372 | lttng_buffer_view_from_view( | |
373 | &view->buffer, sizeof(*comm), -1); | |
374 | ||
375 | if (!lttng_buffer_view_is_valid(&location_view)) { | |
c19092cd JG |
376 | goto error; |
377 | } | |
378 | ||
379 | ret = lttng_trace_archive_location_create_from_buffer( | |
380 | &location_view, &location); | |
381 | if (ret < 0) { | |
382 | goto error; | |
383 | } | |
384 | size += ret; | |
385 | } | |
386 | ||
387 | evaluation = lttng_evaluation_session_rotation_create(type, comm->id, | |
388 | location); | |
389 | if (!evaluation) { | |
390 | goto error; | |
391 | } | |
392 | ||
d3740619 | 393 | lttng_trace_archive_location_put(location); |
c19092cd JG |
394 | ret = size; |
395 | *_evaluation = evaluation; | |
396 | return ret; | |
397 | error: | |
d3740619 | 398 | lttng_trace_archive_location_put(location); |
c19092cd JG |
399 | evaluation = NULL; |
400 | return -1; | |
401 | } | |
402 | ||
403 | static | |
c0a66c84 | 404 | ssize_t lttng_evaluation_session_rotation_create_from_payload( |
c19092cd | 405 | enum lttng_condition_type type, |
c0a66c84 | 406 | struct lttng_payload_view *view, |
c19092cd JG |
407 | struct lttng_evaluation **_evaluation) |
408 | { | |
409 | ssize_t ret; | |
410 | struct lttng_evaluation *evaluation = NULL; | |
411 | ||
412 | if (!_evaluation) { | |
413 | ret = -1; | |
414 | goto error; | |
415 | } | |
416 | ||
c0a66c84 | 417 | ret = create_evaluation_from_payload(type, view, &evaluation); |
c19092cd JG |
418 | if (ret < 0) { |
419 | goto error; | |
420 | } | |
421 | ||
422 | *_evaluation = evaluation; | |
423 | return ret; | |
424 | error: | |
425 | lttng_evaluation_destroy(evaluation); | |
426 | return ret; | |
427 | } | |
428 | ||
c0a66c84 JG |
429 | ssize_t lttng_evaluation_session_rotation_ongoing_create_from_payload( |
430 | struct lttng_payload_view *view, | |
c19092cd JG |
431 | struct lttng_evaluation **evaluation) |
432 | { | |
c0a66c84 | 433 | return lttng_evaluation_session_rotation_create_from_payload( |
c19092cd JG |
434 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING, |
435 | view, evaluation); | |
436 | } | |
437 | ||
c0a66c84 JG |
438 | ssize_t lttng_evaluation_session_rotation_completed_create_from_payload( |
439 | struct lttng_payload_view *view, | |
c19092cd JG |
440 | struct lttng_evaluation **evaluation) |
441 | { | |
c0a66c84 | 442 | return lttng_evaluation_session_rotation_create_from_payload( |
c19092cd JG |
443 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED, |
444 | view, evaluation); | |
445 | } | |
446 | ||
c19092cd JG |
447 | struct lttng_evaluation *lttng_evaluation_session_rotation_ongoing_create( |
448 | uint64_t id) | |
449 | { | |
450 | return lttng_evaluation_session_rotation_create( | |
451 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING, id, | |
452 | NULL); | |
453 | } | |
454 | ||
c19092cd JG |
455 | struct lttng_evaluation *lttng_evaluation_session_rotation_completed_create( |
456 | uint64_t id, struct lttng_trace_archive_location *location) | |
457 | { | |
458 | return lttng_evaluation_session_rotation_create( | |
459 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED, id, | |
460 | location); | |
461 | } | |
462 | ||
463 | enum lttng_condition_status | |
464 | lttng_condition_session_rotation_get_session_name( | |
465 | const struct lttng_condition *condition, | |
466 | const char **session_name) | |
467 | { | |
468 | struct lttng_condition_session_rotation *rotation; | |
469 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
470 | ||
471 | if (!condition || !is_rotation_condition(condition) || !session_name) { | |
472 | status = LTTNG_CONDITION_STATUS_INVALID; | |
473 | goto end; | |
474 | } | |
475 | ||
476 | rotation = container_of(condition, struct lttng_condition_session_rotation, | |
477 | parent); | |
478 | if (!rotation->session_name) { | |
479 | status = LTTNG_CONDITION_STATUS_UNSET; | |
480 | goto end; | |
481 | } | |
482 | *session_name = rotation->session_name; | |
483 | end: | |
484 | return status; | |
485 | } | |
486 | ||
487 | enum lttng_condition_status | |
488 | lttng_condition_session_rotation_set_session_name( | |
489 | struct lttng_condition *condition, const char *session_name) | |
490 | { | |
491 | char *session_name_copy; | |
492 | struct lttng_condition_session_rotation *rotation; | |
493 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
494 | ||
495 | if (!condition || !is_rotation_condition(condition) || | |
496 | !session_name || strlen(session_name) == 0) { | |
497 | status = LTTNG_CONDITION_STATUS_INVALID; | |
498 | goto end; | |
499 | } | |
500 | ||
501 | rotation = container_of(condition, | |
502 | struct lttng_condition_session_rotation, parent); | |
503 | session_name_copy = strdup(session_name); | |
504 | if (!session_name_copy) { | |
505 | status = LTTNG_CONDITION_STATUS_ERROR; | |
506 | goto end; | |
507 | } | |
508 | ||
509 | free(rotation->session_name); | |
510 | rotation->session_name = session_name_copy; | |
511 | end: | |
512 | return status; | |
513 | } | |
514 | ||
515 | static | |
516 | int lttng_evaluation_session_rotation_serialize( | |
517 | const struct lttng_evaluation *evaluation, | |
c0a66c84 | 518 | struct lttng_payload *payload) |
c19092cd JG |
519 | { |
520 | int ret; | |
521 | struct lttng_evaluation_session_rotation *rotation; | |
522 | struct lttng_evaluation_session_rotation_comm comm = { 0 }; | |
523 | ||
524 | rotation = container_of(evaluation, | |
525 | struct lttng_evaluation_session_rotation, parent); | |
526 | comm.id = rotation->id; | |
527 | comm.has_location = !!rotation->location; | |
c0a66c84 JG |
528 | ret = lttng_dynamic_buffer_append( |
529 | &payload->buffer, &comm, sizeof(comm)); | |
c19092cd JG |
530 | if (ret) { |
531 | goto end; | |
532 | } | |
533 | if (!rotation->location) { | |
534 | goto end; | |
535 | } | |
536 | ret = lttng_trace_archive_location_serialize(rotation->location, | |
c0a66c84 | 537 | &payload->buffer); |
c19092cd JG |
538 | end: |
539 | return ret; | |
540 | } | |
541 | ||
542 | static | |
543 | void lttng_evaluation_session_rotation_destroy( | |
544 | struct lttng_evaluation *evaluation) | |
545 | { | |
546 | struct lttng_evaluation_session_rotation *rotation; | |
547 | ||
548 | rotation = container_of(evaluation, | |
549 | struct lttng_evaluation_session_rotation, parent); | |
d3740619 | 550 | lttng_trace_archive_location_put(rotation->location); |
c19092cd JG |
551 | free(rotation); |
552 | } | |
553 | ||
554 | enum lttng_evaluation_status | |
555 | lttng_evaluation_session_rotation_get_id( | |
556 | const struct lttng_evaluation *evaluation, uint64_t *id) | |
557 | { | |
558 | const struct lttng_evaluation_session_rotation *rotation; | |
559 | enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK; | |
560 | ||
561 | if (!evaluation || !id || !is_rotation_evaluation(evaluation)) { | |
562 | status = LTTNG_EVALUATION_STATUS_INVALID; | |
563 | goto end; | |
564 | } | |
565 | ||
566 | rotation = container_of(evaluation, | |
567 | struct lttng_evaluation_session_rotation, parent); | |
568 | *id = rotation->id; | |
569 | end: | |
570 | return status; | |
571 | } | |
572 | ||
d3740619 JR |
573 | /* |
574 | * The public API assumes that trace archive locations are always provided as | |
575 | * "constant". This means that the user of liblttng-ctl never has to destroy a | |
576 | * trace archive location. Hence, users of liblttng-ctl have no visibility of | |
577 | * the reference counting of archive locations. | |
578 | */ | |
c19092cd JG |
579 | enum lttng_evaluation_status |
580 | lttng_evaluation_session_rotation_completed_get_location( | |
581 | const struct lttng_evaluation *evaluation, | |
582 | const struct lttng_trace_archive_location **location) | |
583 | { | |
584 | const struct lttng_evaluation_session_rotation *rotation; | |
585 | enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK; | |
586 | ||
587 | if (!evaluation || !location || | |
588 | evaluation->type != LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED) { | |
589 | status = LTTNG_EVALUATION_STATUS_INVALID; | |
590 | goto end; | |
591 | } | |
592 | ||
593 | rotation = container_of(evaluation, | |
594 | struct lttng_evaluation_session_rotation, parent); | |
595 | *location = rotation->location; | |
596 | end: | |
597 | return status; | |
598 | } | |
6a751b95 JR |
599 | |
600 | static | |
601 | enum lttng_error_code lttng_condition_session_rotation_mi_serialize( | |
602 | const struct lttng_condition *condition, | |
603 | struct mi_writer *writer) | |
604 | { | |
605 | int ret; | |
606 | enum lttng_error_code ret_code; | |
607 | enum lttng_condition_status status; | |
608 | const char *session_name = NULL; | |
609 | const char *type_element_str = NULL; | |
610 | ||
a0377dfe FD |
611 | LTTNG_ASSERT(condition); |
612 | LTTNG_ASSERT(writer); | |
613 | LTTNG_ASSERT(is_rotation_condition(condition)); | |
6a751b95 JR |
614 | |
615 | switch (lttng_condition_get_type(condition)) { | |
616 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED: | |
617 | type_element_str = | |
618 | mi_lttng_element_condition_session_rotation_completed; | |
619 | break; | |
620 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING: | |
621 | type_element_str = | |
622 | mi_lttng_element_condition_session_rotation_ongoing; | |
623 | break; | |
624 | default: | |
625 | abort(); | |
626 | break; | |
627 | } | |
628 | ||
629 | status = lttng_condition_session_rotation_get_session_name( | |
630 | condition, &session_name); | |
a0377dfe FD |
631 | LTTNG_ASSERT(status == LTTNG_CONDITION_STATUS_OK); |
632 | LTTNG_ASSERT(session_name); | |
6a751b95 JR |
633 | |
634 | /* Open condition session rotation_* element. */ | |
635 | ret = mi_lttng_writer_open_element(writer, type_element_str); | |
636 | if (ret) { | |
637 | goto mi_error; | |
638 | } | |
639 | ||
640 | /* Session name. */ | |
641 | ret = mi_lttng_writer_write_element_string( | |
642 | writer, mi_lttng_element_session_name, session_name); | |
643 | if (ret) { | |
644 | goto mi_error; | |
645 | } | |
646 | ||
647 | /* Close condition session rotation element. */ | |
648 | ret = mi_lttng_writer_close_element(writer); | |
649 | if (ret) { | |
650 | goto mi_error; | |
651 | } | |
652 | ||
653 | ret_code = LTTNG_OK; | |
654 | goto end; | |
655 | ||
656 | mi_error: | |
657 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
658 | end: | |
659 | return ret_code; | |
660 | } |