Refactor: lttng-ctl: follow terminology of the tracker documentation
[lttng-tools.git] / src / bin / lttng-sessiond / trace-ust.c
1 /*
2 * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
3 * Copyright (C) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
4 *
5 * SPDX-License-Identifier: GPL-2.0-only
6 *
7 */
8
9 #define _LGPL_SOURCE
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <string.h>
13 #include <unistd.h>
14 #include <inttypes.h>
15
16 #include <common/common.h>
17 #include <common/defaults.h>
18 #include <common/trace-chunk.h>
19 #include <common/utils.h>
20
21 #include "buffer-registry.h"
22 #include "trace-ust.h"
23 #include "utils.h"
24 #include "ust-app.h"
25 #include "agent.h"
26
27 /*
28 * Match function for the events hash table lookup.
29 *
30 * Matches by name only. Used by the disable command.
31 */
32 int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node,
33 const void *_key)
34 {
35 struct ltt_ust_event *event;
36 const char *name;
37
38 assert(node);
39 assert(_key);
40
41 event = caa_container_of(node, struct ltt_ust_event, node.node);
42 name = _key;
43
44 /* Event name */
45 if (strncmp(event->attr.name, name, sizeof(event->attr.name)) != 0) {
46 goto no_match;
47 }
48
49 /* Match */
50 return 1;
51
52 no_match:
53 return 0;
54 }
55
56 /*
57 * Match function for the hash table lookup.
58 *
59 * It matches an ust event based on three attributes which are the event name,
60 * the filter bytecode and the loglevel.
61 */
62 int trace_ust_ht_match_event(struct cds_lfht_node *node, const void *_key)
63 {
64 struct ltt_ust_event *event;
65 const struct ltt_ust_ht_key *key;
66 int ev_loglevel_value;
67 int ll_match;
68
69 assert(node);
70 assert(_key);
71
72 event = caa_container_of(node, struct ltt_ust_event, node.node);
73 key = _key;
74 ev_loglevel_value = event->attr.loglevel;
75
76 /* Match the 4 elements of the key: name, filter, loglevel, exclusions. */
77
78 /* Event name */
79 if (strncmp(event->attr.name, key->name, sizeof(event->attr.name)) != 0) {
80 goto no_match;
81 }
82
83 /* Event loglevel value and type. */
84 ll_match = loglevels_match(event->attr.loglevel_type,
85 ev_loglevel_value, key->loglevel_type,
86 key->loglevel_value, LTTNG_UST_LOGLEVEL_ALL);
87
88 if (!ll_match) {
89 goto no_match;
90 }
91
92 /* Only one of the filters is NULL, fail. */
93 if ((key->filter && !event->filter) || (!key->filter && event->filter)) {
94 goto no_match;
95 }
96
97 if (key->filter && event->filter) {
98 /* Both filters exists, check length followed by the bytecode. */
99 if (event->filter->len != key->filter->len ||
100 memcmp(event->filter->data, key->filter->data,
101 event->filter->len) != 0) {
102 goto no_match;
103 }
104 }
105
106 /* If only one of the exclusions is NULL, fail. */
107 if ((key->exclusion && !event->exclusion) || (!key->exclusion && event->exclusion)) {
108 goto no_match;
109 }
110
111 if (key->exclusion && event->exclusion) {
112 size_t i;
113
114 /* Check exclusion counts first. */
115 if (event->exclusion->count != key->exclusion->count) {
116 goto no_match;
117 }
118
119 /* Compare names individually. */
120 for (i = 0; i < event->exclusion->count; ++i) {
121 size_t j;
122 bool found = false;
123 const char *name_ev =
124 LTTNG_EVENT_EXCLUSION_NAME_AT(
125 event->exclusion, i);
126
127 /*
128 * Compare this exclusion name to all the key's
129 * exclusion names.
130 */
131 for (j = 0; j < key->exclusion->count; ++j) {
132 const char *name_key =
133 LTTNG_EVENT_EXCLUSION_NAME_AT(
134 key->exclusion, j);
135
136 if (!strncmp(name_ev, name_key,
137 LTTNG_SYMBOL_NAME_LEN)) {
138 /* Names match! */
139 found = true;
140 break;
141 }
142 }
143
144 /*
145 * If the current exclusion name was not found amongst
146 * the key's exclusion names, then there's no match.
147 */
148 if (!found) {
149 goto no_match;
150 }
151 }
152 }
153 /* Match. */
154 return 1;
155
156 no_match:
157 return 0;
158 }
159
160 /*
161 * Find the channel in the hashtable and return channel pointer. RCU read side
162 * lock MUST be acquired before calling this.
163 */
164 struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht,
165 const char *name)
166 {
167 struct lttng_ht_node_str *node;
168 struct lttng_ht_iter iter;
169
170 /*
171 * If we receive an empty string for channel name, it means the
172 * default channel name is requested.
173 */
174 if (name[0] == '\0')
175 name = DEFAULT_CHANNEL_NAME;
176
177 lttng_ht_lookup(ht, (void *)name, &iter);
178 node = lttng_ht_iter_get_node_str(&iter);
179 if (node == NULL) {
180 goto error;
181 }
182
183 DBG2("Trace UST channel %s found by name", name);
184
185 return caa_container_of(node, struct ltt_ust_channel, node);
186
187 error:
188 DBG2("Trace UST channel %s not found by name", name);
189 return NULL;
190 }
191
192 /*
193 * Find the event in the hashtable and return event pointer. RCU read side lock
194 * MUST be acquired before calling this.
195 */
196 struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht,
197 char *name, struct lttng_filter_bytecode *filter,
198 enum lttng_ust_loglevel_type loglevel_type, int loglevel_value,
199 struct lttng_event_exclusion *exclusion)
200 {
201 struct lttng_ht_node_str *node;
202 struct lttng_ht_iter iter;
203 struct ltt_ust_ht_key key;
204
205 assert(name);
206 assert(ht);
207
208 key.name = name;
209 key.filter = filter;
210 key.loglevel_type = loglevel_type;
211 key.loglevel_value = loglevel_value;
212 key.exclusion = exclusion;
213
214 cds_lfht_lookup(ht->ht, ht->hash_fct((void *) name, lttng_ht_seed),
215 trace_ust_ht_match_event, &key, &iter.iter);
216 node = lttng_ht_iter_get_node_str(&iter);
217 if (node == NULL) {
218 goto error;
219 }
220
221 DBG2("Trace UST event %s found", key.name);
222
223 return caa_container_of(node, struct ltt_ust_event, node);
224
225 error:
226 DBG2("Trace UST event %s NOT found", key.name);
227 return NULL;
228 }
229
230 /*
231 * Lookup an agent in the session agents hash table by domain type and return
232 * the object if found else NULL.
233 *
234 * RCU read side lock must be acquired before calling and only released
235 * once the agent is no longer in scope or being used.
236 */
237 struct agent *trace_ust_find_agent(struct ltt_ust_session *session,
238 enum lttng_domain_type domain_type)
239 {
240 struct agent *agt = NULL;
241 struct lttng_ht_node_u64 *node;
242 struct lttng_ht_iter iter;
243 uint64_t key;
244
245 assert(session);
246
247 DBG3("Trace ust agent lookup for domain %d", domain_type);
248
249 key = domain_type;
250
251 lttng_ht_lookup(session->agents, &key, &iter);
252 node = lttng_ht_iter_get_node_u64(&iter);
253 if (!node) {
254 goto end;
255 }
256 agt = caa_container_of(node, struct agent, node);
257
258 end:
259 return agt;
260 }
261
262 /*
263 * Allocate and initialize a ust session data structure.
264 *
265 * Return pointer to structure or NULL.
266 */
267 struct ltt_ust_session *trace_ust_create_session(uint64_t session_id)
268 {
269 struct ltt_ust_session *lus;
270
271 /* Allocate a new ltt ust session */
272 lus = zmalloc(sizeof(struct ltt_ust_session));
273 if (lus == NULL) {
274 PERROR("create ust session zmalloc");
275 goto error_alloc;
276 }
277
278 /* Init data structure */
279 lus->id = session_id;
280 lus->active = 0;
281
282 /* Set default metadata channel attribute. */
283 lus->metadata_attr.overwrite = DEFAULT_CHANNEL_OVERWRITE;
284 lus->metadata_attr.subbuf_size = default_get_metadata_subbuf_size();
285 lus->metadata_attr.num_subbuf = DEFAULT_METADATA_SUBBUF_NUM;
286 lus->metadata_attr.switch_timer_interval = DEFAULT_METADATA_SWITCH_TIMER;
287 lus->metadata_attr.read_timer_interval = DEFAULT_METADATA_READ_TIMER;
288 lus->metadata_attr.output = LTTNG_UST_MMAP;
289
290 /*
291 * Default buffer type. This can be changed through an enable channel
292 * requesting a different type. Note that this can only be changed once
293 * during the session lifetime which is at the first enable channel and
294 * only before start. The flag buffer_type_changed indicates the status.
295 */
296 lus->buffer_type = LTTNG_BUFFER_PER_UID;
297 /* Once set to 1, the buffer_type is immutable for the session. */
298 lus->buffer_type_changed = 0;
299 /* Init it in case it get used after allocation. */
300 CDS_INIT_LIST_HEAD(&lus->buffer_reg_uid_list);
301
302 /* Alloc UST global domain channels' HT */
303 lus->domain_global.channels = lttng_ht_new(0, LTTNG_HT_TYPE_STRING);
304 /* Alloc agent hash table. */
305 lus->agents = lttng_ht_new(0, LTTNG_HT_TYPE_U64);
306
307 lus->tracker_vpid = process_attr_tracker_create();
308 if (!lus->tracker_vpid) {
309 goto error;
310 }
311 lus->tracker_vuid = process_attr_tracker_create();
312 if (!lus->tracker_vuid) {
313 goto error;
314 }
315 lus->tracker_vgid = process_attr_tracker_create();
316 if (!lus->tracker_vgid) {
317 goto error;
318 }
319 lus->consumer = consumer_create_output(CONSUMER_DST_LOCAL);
320 if (lus->consumer == NULL) {
321 goto error;
322 }
323
324 DBG2("UST trace session create successful");
325
326 return lus;
327
328 error:
329 process_attr_tracker_destroy(lus->tracker_vpid);
330 process_attr_tracker_destroy(lus->tracker_vuid);
331 process_attr_tracker_destroy(lus->tracker_vgid);
332 ht_cleanup_push(lus->domain_global.channels);
333 ht_cleanup_push(lus->agents);
334 free(lus);
335 error_alloc:
336 return NULL;
337 }
338
339 /*
340 * Allocate and initialize a ust channel data structure.
341 *
342 * Return pointer to structure or NULL.
343 */
344 struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan,
345 enum lttng_domain_type domain)
346 {
347 struct ltt_ust_channel *luc;
348
349 assert(chan);
350
351 luc = zmalloc(sizeof(struct ltt_ust_channel));
352 if (luc == NULL) {
353 PERROR("ltt_ust_channel zmalloc");
354 goto error;
355 }
356
357 luc->domain = domain;
358
359 /* Copy UST channel attributes */
360 luc->attr.overwrite = chan->attr.overwrite;
361 luc->attr.subbuf_size = chan->attr.subbuf_size;
362 luc->attr.num_subbuf = chan->attr.num_subbuf;
363 luc->attr.switch_timer_interval = chan->attr.switch_timer_interval;
364 luc->attr.read_timer_interval = chan->attr.read_timer_interval;
365 luc->attr.output = (enum lttng_ust_output) chan->attr.output;
366 luc->monitor_timer_interval = ((struct lttng_channel_extended *)
367 chan->attr.extended.ptr)->monitor_timer_interval;
368 luc->attr.u.s.blocking_timeout = ((struct lttng_channel_extended *)
369 chan->attr.extended.ptr)->blocking_timeout;
370
371 /* Translate to UST output enum */
372 switch (luc->attr.output) {
373 default:
374 luc->attr.output = LTTNG_UST_MMAP;
375 break;
376 }
377
378 /*
379 * If we receive an empty string for channel name, it means the
380 * default channel name is requested.
381 */
382 if (chan->name[0] == '\0') {
383 strncpy(luc->name, DEFAULT_CHANNEL_NAME, sizeof(luc->name));
384 } else {
385 /* Copy channel name */
386 strncpy(luc->name, chan->name, sizeof(luc->name));
387 }
388 luc->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
389
390 /* Init node */
391 lttng_ht_node_init_str(&luc->node, luc->name);
392 CDS_INIT_LIST_HEAD(&luc->ctx_list);
393
394 /* Alloc hash tables */
395 luc->events = lttng_ht_new(0, LTTNG_HT_TYPE_STRING);
396 luc->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
397
398 /* On-disk circular buffer parameters */
399 luc->tracefile_size = chan->attr.tracefile_size;
400 luc->tracefile_count = chan->attr.tracefile_count;
401
402 DBG2("Trace UST channel %s created", luc->name);
403
404 error:
405 return luc;
406 }
407
408 /*
409 * Validates an exclusion list.
410 *
411 * Returns 0 if valid, negative value if invalid.
412 */
413 static int validate_exclusion(struct lttng_event_exclusion *exclusion)
414 {
415 size_t i;
416 int ret = 0;
417
418 assert(exclusion);
419
420 for (i = 0; i < exclusion->count; ++i) {
421 size_t j;
422 const char *name_a =
423 LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, i);
424
425 for (j = 0; j < i; ++j) {
426 const char *name_b =
427 LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, j);
428
429 if (!strncmp(name_a, name_b, LTTNG_SYMBOL_NAME_LEN)) {
430 /* Match! */
431 ret = -1;
432 goto end;
433 }
434 }
435 }
436
437 end:
438 return ret;
439 }
440
441 /*
442 * Allocate and initialize a ust event. Set name and event type.
443 * We own filter_expression, filter, and exclusion.
444 *
445 * Return an lttng_error_code
446 */
447 enum lttng_error_code trace_ust_create_event(struct lttng_event *ev,
448 char *filter_expression,
449 struct lttng_filter_bytecode *filter,
450 struct lttng_event_exclusion *exclusion,
451 bool internal_event,
452 struct ltt_ust_event **ust_event)
453 {
454 struct ltt_ust_event *local_ust_event;
455 enum lttng_error_code ret = LTTNG_OK;
456
457 assert(ev);
458
459 if (exclusion && validate_exclusion(exclusion)) {
460 ret = LTTNG_ERR_INVALID;
461 goto error;
462 }
463
464 local_ust_event = zmalloc(sizeof(struct ltt_ust_event));
465 if (local_ust_event == NULL) {
466 PERROR("ust event zmalloc");
467 ret = LTTNG_ERR_NOMEM;
468 goto error;
469 }
470
471 local_ust_event->internal = internal_event;
472
473 switch (ev->type) {
474 case LTTNG_EVENT_PROBE:
475 local_ust_event->attr.instrumentation = LTTNG_UST_PROBE;
476 break;
477 case LTTNG_EVENT_FUNCTION:
478 local_ust_event->attr.instrumentation = LTTNG_UST_FUNCTION;
479 break;
480 case LTTNG_EVENT_FUNCTION_ENTRY:
481 local_ust_event->attr.instrumentation = LTTNG_UST_FUNCTION;
482 break;
483 case LTTNG_EVENT_TRACEPOINT:
484 local_ust_event->attr.instrumentation = LTTNG_UST_TRACEPOINT;
485 break;
486 default:
487 ERR("Unknown ust instrumentation type (%d)", ev->type);
488 ret = LTTNG_ERR_INVALID;
489 goto error_free_event;
490 }
491
492 /* Copy event name */
493 strncpy(local_ust_event->attr.name, ev->name, LTTNG_UST_SYM_NAME_LEN);
494 local_ust_event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
495
496 switch (ev->loglevel_type) {
497 case LTTNG_EVENT_LOGLEVEL_ALL:
498 local_ust_event->attr.loglevel_type = LTTNG_UST_LOGLEVEL_ALL;
499 local_ust_event->attr.loglevel = -1; /* Force to -1 */
500 break;
501 case LTTNG_EVENT_LOGLEVEL_RANGE:
502 local_ust_event->attr.loglevel_type = LTTNG_UST_LOGLEVEL_RANGE;
503 local_ust_event->attr.loglevel = ev->loglevel;
504 break;
505 case LTTNG_EVENT_LOGLEVEL_SINGLE:
506 local_ust_event->attr.loglevel_type = LTTNG_UST_LOGLEVEL_SINGLE;
507 local_ust_event->attr.loglevel = ev->loglevel;
508 break;
509 default:
510 ERR("Unknown ust loglevel type (%d)", ev->loglevel_type);
511 ret = LTTNG_ERR_INVALID;
512 goto error_free_event;
513 }
514
515 /* Same layout. */
516 local_ust_event->filter_expression = filter_expression;
517 local_ust_event->filter = filter;
518 local_ust_event->exclusion = exclusion;
519
520 /* Init node */
521 lttng_ht_node_init_str(&local_ust_event->node, local_ust_event->attr.name);
522
523 DBG2("Trace UST event %s, loglevel (%d,%d) created",
524 local_ust_event->attr.name, local_ust_event->attr.loglevel_type,
525 local_ust_event->attr.loglevel);
526
527 *ust_event = local_ust_event;
528
529 return ret;
530
531 error_free_event:
532 free(local_ust_event);
533 error:
534 free(filter_expression);
535 free(filter);
536 free(exclusion);
537 return ret;
538 }
539
540 static
541 int trace_ust_context_type_event_to_ust(
542 enum lttng_event_context_type type)
543 {
544 int utype;
545
546 switch (type) {
547 case LTTNG_EVENT_CONTEXT_VTID:
548 utype = LTTNG_UST_CONTEXT_VTID;
549 break;
550 case LTTNG_EVENT_CONTEXT_VPID:
551 utype = LTTNG_UST_CONTEXT_VPID;
552 break;
553 case LTTNG_EVENT_CONTEXT_PTHREAD_ID:
554 utype = LTTNG_UST_CONTEXT_PTHREAD_ID;
555 break;
556 case LTTNG_EVENT_CONTEXT_PROCNAME:
557 utype = LTTNG_UST_CONTEXT_PROCNAME;
558 break;
559 case LTTNG_EVENT_CONTEXT_IP:
560 utype = LTTNG_UST_CONTEXT_IP;
561 break;
562 case LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER:
563 if (!ustctl_has_perf_counters()) {
564 utype = -1;
565 WARN("Perf counters not implemented in UST");
566 } else {
567 utype = LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER;
568 }
569 break;
570 case LTTNG_EVENT_CONTEXT_APP_CONTEXT:
571 utype = LTTNG_UST_CONTEXT_APP_CONTEXT;
572 break;
573 case LTTNG_EVENT_CONTEXT_CGROUP_NS:
574 utype = LTTNG_UST_CONTEXT_CGROUP_NS;
575 break;
576 case LTTNG_EVENT_CONTEXT_IPC_NS:
577 utype = LTTNG_UST_CONTEXT_IPC_NS;
578 break;
579 case LTTNG_EVENT_CONTEXT_MNT_NS:
580 utype = LTTNG_UST_CONTEXT_MNT_NS;
581 break;
582 case LTTNG_EVENT_CONTEXT_NET_NS:
583 utype = LTTNG_UST_CONTEXT_NET_NS;
584 break;
585 case LTTNG_EVENT_CONTEXT_PID_NS:
586 utype = LTTNG_UST_CONTEXT_PID_NS;
587 break;
588 case LTTNG_EVENT_CONTEXT_USER_NS:
589 utype = LTTNG_UST_CONTEXT_USER_NS;
590 break;
591 case LTTNG_EVENT_CONTEXT_UTS_NS:
592 utype = LTTNG_UST_CONTEXT_UTS_NS;
593 break;
594 case LTTNG_EVENT_CONTEXT_VUID:
595 utype = LTTNG_UST_CONTEXT_VUID;
596 break;
597 case LTTNG_EVENT_CONTEXT_VEUID:
598 utype = LTTNG_UST_CONTEXT_VEUID;
599 break;
600 case LTTNG_EVENT_CONTEXT_VSUID:
601 utype = LTTNG_UST_CONTEXT_VSUID;
602 break;
603 case LTTNG_EVENT_CONTEXT_VGID:
604 utype = LTTNG_UST_CONTEXT_VGID;
605 break;
606 case LTTNG_EVENT_CONTEXT_VEGID:
607 utype = LTTNG_UST_CONTEXT_VEGID;
608 break;
609 case LTTNG_EVENT_CONTEXT_VSGID:
610 utype = LTTNG_UST_CONTEXT_VSGID;
611 break;
612 default:
613 utype = -1;
614 break;
615 }
616 return utype;
617 }
618
619 /*
620 * Return 1 if contexts match, 0 otherwise.
621 */
622 int trace_ust_match_context(const struct ltt_ust_context *uctx,
623 const struct lttng_event_context *ctx)
624 {
625 int utype;
626
627 utype = trace_ust_context_type_event_to_ust(ctx->ctx);
628 if (utype < 0) {
629 return 0;
630 }
631 if (uctx->ctx.ctx != utype) {
632 return 0;
633 }
634 switch (utype) {
635 case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER:
636 if (uctx->ctx.u.perf_counter.type
637 != ctx->u.perf_counter.type) {
638 return 0;
639 }
640 if (uctx->ctx.u.perf_counter.config
641 != ctx->u.perf_counter.config) {
642 return 0;
643 }
644 if (strncmp(uctx->ctx.u.perf_counter.name,
645 ctx->u.perf_counter.name,
646 LTTNG_UST_SYM_NAME_LEN)) {
647 return 0;
648 }
649 break;
650 case LTTNG_UST_CONTEXT_APP_CONTEXT:
651 assert(uctx->ctx.u.app_ctx.provider_name);
652 assert(uctx->ctx.u.app_ctx.ctx_name);
653 if (strcmp(uctx->ctx.u.app_ctx.provider_name,
654 ctx->u.app_ctx.provider_name) ||
655 strcmp(uctx->ctx.u.app_ctx.ctx_name,
656 ctx->u.app_ctx.ctx_name)) {
657 return 0;
658 }
659 default:
660 break;
661
662 }
663 return 1;
664 }
665
666 /*
667 * Allocate and initialize an UST context.
668 *
669 * Return pointer to structure or NULL.
670 */
671 struct ltt_ust_context *trace_ust_create_context(
672 const struct lttng_event_context *ctx)
673 {
674 struct ltt_ust_context *uctx = NULL;
675 int utype;
676
677 assert(ctx);
678
679 utype = trace_ust_context_type_event_to_ust(ctx->ctx);
680 if (utype < 0) {
681 ERR("Invalid UST context");
682 goto end;
683 }
684
685 uctx = zmalloc(sizeof(struct ltt_ust_context));
686 if (!uctx) {
687 PERROR("zmalloc ltt_ust_context");
688 goto end;
689 }
690
691 uctx->ctx.ctx = (enum lttng_ust_context_type) utype;
692 switch (utype) {
693 case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER:
694 uctx->ctx.u.perf_counter.type = ctx->u.perf_counter.type;
695 uctx->ctx.u.perf_counter.config = ctx->u.perf_counter.config;
696 strncpy(uctx->ctx.u.perf_counter.name, ctx->u.perf_counter.name,
697 LTTNG_UST_SYM_NAME_LEN);
698 uctx->ctx.u.perf_counter.name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
699 break;
700 case LTTNG_UST_CONTEXT_APP_CONTEXT:
701 {
702 char *provider_name = NULL, *ctx_name = NULL;
703
704 provider_name = strdup(ctx->u.app_ctx.provider_name);
705 if (!provider_name) {
706 goto error;
707 }
708 uctx->ctx.u.app_ctx.provider_name = provider_name;
709
710 ctx_name = strdup(ctx->u.app_ctx.ctx_name);
711 if (!ctx_name) {
712 goto error;
713 }
714 uctx->ctx.u.app_ctx.ctx_name = ctx_name;
715 break;
716 }
717 default:
718 break;
719 }
720 lttng_ht_node_init_ulong(&uctx->node, (unsigned long) uctx->ctx.ctx);
721 end:
722 return uctx;
723 error:
724 trace_ust_destroy_context(uctx);
725 return NULL;
726 }
727
728 static void destroy_id_tracker_node_rcu(struct rcu_head *head)
729 {
730 struct ust_id_tracker_node *tracker_node = caa_container_of(
731 head, struct ust_id_tracker_node, node.head);
732 free(tracker_node);
733 }
734
735 static void destroy_id_tracker_node(struct ust_id_tracker_node *tracker_node)
736 {
737 call_rcu(&tracker_node->node.head, destroy_id_tracker_node_rcu);
738 }
739
740 static int init_id_tracker(struct ust_id_tracker *id_tracker)
741 {
742 int ret = LTTNG_OK;
743
744 id_tracker->ht = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
745 if (!id_tracker->ht) {
746 ret = LTTNG_ERR_NOMEM;
747 goto end;
748 }
749
750 end:
751 return ret;
752 }
753
754 /*
755 * Teardown id tracker content, but don't free id_tracker object.
756 */
757 static void fini_id_tracker(struct ust_id_tracker *id_tracker)
758 {
759 struct ust_id_tracker_node *tracker_node;
760 struct lttng_ht_iter iter;
761
762 if (!id_tracker->ht) {
763 return;
764 }
765 rcu_read_lock();
766 cds_lfht_for_each_entry (id_tracker->ht->ht, &iter.iter, tracker_node,
767 node.node) {
768 int ret = lttng_ht_del(id_tracker->ht, &iter);
769
770 assert(!ret);
771 destroy_id_tracker_node(tracker_node);
772 }
773 rcu_read_unlock();
774 ht_cleanup_push(id_tracker->ht);
775 id_tracker->ht = NULL;
776 }
777
778 static struct ust_id_tracker_node *id_tracker_lookup(
779 struct ust_id_tracker *id_tracker,
780 int id,
781 struct lttng_ht_iter *iter)
782 {
783 unsigned long _id = (unsigned long) id;
784 struct lttng_ht_node_ulong *node;
785
786 lttng_ht_lookup(id_tracker->ht, (void *) _id, iter);
787 node = lttng_ht_iter_get_node_ulong(iter);
788 if (node) {
789 return caa_container_of(node, struct ust_id_tracker_node, node);
790 } else {
791 return NULL;
792 }
793 }
794
795 static int id_tracker_add_id(struct ust_id_tracker *id_tracker, int id)
796 {
797 int retval = LTTNG_OK;
798 struct ust_id_tracker_node *tracker_node;
799 struct lttng_ht_iter iter;
800
801 if (id < 0) {
802 retval = LTTNG_ERR_INVALID;
803 goto end;
804 }
805 tracker_node = id_tracker_lookup(id_tracker, id, &iter);
806 if (tracker_node) {
807 /* Already exists. */
808 retval = LTTNG_ERR_PROCESS_ATTR_EXISTS;
809 goto end;
810 }
811 tracker_node = zmalloc(sizeof(*tracker_node));
812 if (!tracker_node) {
813 retval = LTTNG_ERR_NOMEM;
814 goto end;
815 }
816 lttng_ht_node_init_ulong(&tracker_node->node, (unsigned long) id);
817 lttng_ht_add_unique_ulong(id_tracker->ht, &tracker_node->node);
818 end:
819 return retval;
820 }
821
822 static int id_tracker_del_id(struct ust_id_tracker *id_tracker, int id)
823 {
824 int retval = LTTNG_OK, ret;
825 struct ust_id_tracker_node *tracker_node;
826 struct lttng_ht_iter iter;
827
828 if (id < 0) {
829 retval = LTTNG_ERR_INVALID;
830 goto end;
831 }
832 tracker_node = id_tracker_lookup(id_tracker, id, &iter);
833 if (!tracker_node) {
834 /* Not found */
835 retval = LTTNG_ERR_PROCESS_ATTR_MISSING;
836 goto end;
837 }
838 ret = lttng_ht_del(id_tracker->ht, &iter);
839 assert(!ret);
840
841 destroy_id_tracker_node(tracker_node);
842 end:
843 return retval;
844 }
845
846 static struct ust_id_tracker *get_id_tracker(struct ltt_ust_session *session,
847 enum lttng_process_attr process_attr)
848 {
849 switch (process_attr) {
850 case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID:
851 return &session->vpid_tracker;
852 case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID:
853 return &session->vuid_tracker;
854 case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID:
855 return &session->vgid_tracker;
856 default:
857 return NULL;
858 }
859 }
860
861 static struct process_attr_tracker *_trace_ust_get_process_attr_tracker(
862 struct ltt_ust_session *session,
863 enum lttng_process_attr process_attr)
864 {
865 switch (process_attr) {
866 case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID:
867 return session->tracker_vpid;
868 case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID:
869 return session->tracker_vuid;
870 case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID:
871 return session->tracker_vgid;
872 default:
873 return NULL;
874 }
875 }
876
877 const struct process_attr_tracker *trace_ust_get_process_attr_tracker(
878 struct ltt_ust_session *session,
879 enum lttng_process_attr process_attr)
880 {
881 return (const struct process_attr_tracker *)
882 _trace_ust_get_process_attr_tracker(
883 session, process_attr);
884 }
885
886 /*
887 * The session lock is held when calling this function.
888 */
889 int trace_ust_id_tracker_lookup(enum lttng_process_attr process_attr,
890 struct ltt_ust_session *session,
891 int id)
892 {
893 struct lttng_ht_iter iter;
894 struct ust_id_tracker *id_tracker;
895
896 id_tracker = get_id_tracker(session, process_attr);
897 if (!id_tracker) {
898 abort();
899 }
900 if (!id_tracker->ht) {
901 return 1;
902 }
903 if (id_tracker_lookup(id_tracker, id, &iter)) {
904 return 1;
905 }
906 return 0;
907 }
908
909 /*
910 * Called with the session lock held.
911 */
912 enum lttng_error_code trace_ust_process_attr_tracker_set_tracking_policy(
913 struct ltt_ust_session *session,
914 enum lttng_process_attr process_attr,
915 enum lttng_tracking_policy policy)
916 {
917 int ret;
918 enum lttng_error_code ret_code = LTTNG_OK;
919 struct ust_id_tracker *id_tracker =
920 get_id_tracker(session, process_attr);
921 struct process_attr_tracker *tracker =
922 _trace_ust_get_process_attr_tracker(
923 session, process_attr);
924 bool should_update_apps = false;
925 enum lttng_tracking_policy previous_policy;
926
927 if (!tracker) {
928 ret_code = LTTNG_ERR_INVALID;
929 goto end;
930 }
931
932 previous_policy = process_attr_tracker_get_tracking_policy(tracker);
933 ret = process_attr_tracker_set_tracking_policy(tracker, policy);
934 if (ret) {
935 ret_code = LTTNG_ERR_UNK;
936 goto end;
937 }
938
939 if (previous_policy == policy) {
940 goto end;
941 }
942
943 switch (policy) {
944 case LTTNG_TRACKING_POLICY_INCLUDE_ALL:
945 /* Track all values: destroy tracker if exists. */
946 if (id_tracker->ht) {
947 fini_id_tracker(id_tracker);
948 /* Ensure all apps have session. */
949 should_update_apps = true;
950 }
951 break;
952 case LTTNG_TRACKING_POLICY_EXCLUDE_ALL:
953 case LTTNG_TRACKING_POLICY_INCLUDE_SET:
954 /* fall-through. */
955 fini_id_tracker(id_tracker);
956 ret_code = init_id_tracker(id_tracker);
957 if (ret_code != LTTNG_OK) {
958 ERR("Error initializing ID tracker");
959 goto end;
960 }
961 /* Remove all apps from session. */
962 should_update_apps = true;
963 break;
964 default:
965 abort();
966 }
967 if (should_update_apps && session->active) {
968 ust_app_global_update_all(session);
969 }
970 end:
971 return ret_code;
972 }
973
974 /* Called with the session lock held. */
975 enum lttng_error_code trace_ust_process_attr_tracker_inclusion_set_add_value(
976 struct ltt_ust_session *session,
977 enum lttng_process_attr process_attr,
978 const struct process_attr_value *value)
979 {
980 enum lttng_error_code ret_code = LTTNG_OK;
981 bool should_update_apps = false;
982 struct ust_id_tracker *id_tracker =
983 get_id_tracker(session, process_attr);
984 struct process_attr_tracker *tracker;
985 int integral_value;
986 enum process_attr_tracker_status status;
987 struct ust_app *app;
988
989 /*
990 * Convert process attribute tracker value to the integral
991 * representation required by the kern-ctl API.
992 */
993 switch (process_attr) {
994 case LTTNG_PROCESS_ATTR_PROCESS_ID:
995 case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID:
996 integral_value = (int) value->value.pid;
997 break;
998 case LTTNG_PROCESS_ATTR_USER_ID:
999 case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID:
1000 if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_USER_NAME) {
1001 uid_t uid;
1002
1003 ret_code = utils_user_id_from_name(
1004 value->value.user_name, &uid);
1005 if (ret_code != LTTNG_OK) {
1006 goto end;
1007 }
1008 integral_value = (int) uid;
1009 } else {
1010 integral_value = (int) value->value.uid;
1011 }
1012 break;
1013 case LTTNG_PROCESS_ATTR_GROUP_ID:
1014 case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID:
1015 if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_GROUP_NAME) {
1016 gid_t gid;
1017
1018 ret_code = utils_group_id_from_name(
1019 value->value.group_name, &gid);
1020 if (ret_code != LTTNG_OK) {
1021 goto end;
1022 }
1023 integral_value = (int) gid;
1024 } else {
1025 integral_value = (int) value->value.gid;
1026 }
1027 break;
1028 default:
1029 ret_code = LTTNG_ERR_INVALID;
1030 goto end;
1031 }
1032
1033 tracker = _trace_ust_get_process_attr_tracker(session, process_attr);
1034 if (!tracker) {
1035 ret_code = LTTNG_ERR_INVALID;
1036 }
1037
1038 status = process_attr_tracker_inclusion_set_add_value(tracker, value);
1039 if (status != PROCESS_ATTR_TRACKER_STATUS_OK) {
1040 switch (status) {
1041 case PROCESS_ATTR_TRACKER_STATUS_EXISTS:
1042 ret_code = LTTNG_ERR_PROCESS_ATTR_EXISTS;
1043 break;
1044 case PROCESS_ATTR_TRACKER_STATUS_INVALID_TRACKING_POLICY:
1045 ret_code = LTTNG_ERR_PROCESS_ATTR_TRACKER_INVALID_TRACKING_POLICY;
1046 break;
1047 case PROCESS_ATTR_TRACKER_STATUS_ERROR:
1048 default:
1049 ret_code = LTTNG_ERR_UNK;
1050 break;
1051 }
1052 goto end;
1053 }
1054
1055 DBG("User space track %s %d for session id %" PRIu64,
1056 lttng_process_attr_to_string(process_attr),
1057 integral_value, session->id);
1058
1059 ret_code = id_tracker_add_id(id_tracker, integral_value);
1060 if (ret_code != LTTNG_OK) {
1061 goto end;
1062 }
1063 /* Add session to application */
1064 switch (process_attr) {
1065 case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID:
1066 app = ust_app_find_by_pid(integral_value);
1067 if (app) {
1068 should_update_apps = true;
1069 }
1070 break;
1071 default:
1072 should_update_apps = true;
1073 break;
1074 }
1075 if (should_update_apps && session->active) {
1076 ust_app_global_update_all(session);
1077 }
1078 end:
1079 return ret_code;
1080 }
1081
1082 /* Called with the session lock held. */
1083 enum lttng_error_code trace_ust_process_attr_tracker_inclusion_set_remove_value(
1084 struct ltt_ust_session *session,
1085 enum lttng_process_attr process_attr,
1086 const struct process_attr_value *value)
1087 {
1088 enum lttng_error_code ret_code = LTTNG_OK;
1089 bool should_update_apps = false;
1090 struct ust_id_tracker *id_tracker =
1091 get_id_tracker(session, process_attr);
1092 struct process_attr_tracker *tracker;
1093 int integral_value;
1094 enum process_attr_tracker_status status;
1095 struct ust_app *app;
1096
1097 /*
1098 * Convert process attribute tracker value to the integral
1099 * representation required by the kern-ctl API.
1100 */
1101 switch (process_attr) {
1102 case LTTNG_PROCESS_ATTR_PROCESS_ID:
1103 case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID:
1104 integral_value = (int) value->value.pid;
1105 break;
1106 case LTTNG_PROCESS_ATTR_USER_ID:
1107 case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID:
1108 if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_USER_NAME) {
1109 uid_t uid;
1110
1111 ret_code = utils_user_id_from_name(
1112 value->value.user_name, &uid);
1113 if (ret_code != LTTNG_OK) {
1114 goto end;
1115 }
1116 integral_value = (int) uid;
1117 } else {
1118 integral_value = (int) value->value.uid;
1119 }
1120 break;
1121 case LTTNG_PROCESS_ATTR_GROUP_ID:
1122 case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID:
1123 if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_GROUP_NAME) {
1124 gid_t gid;
1125
1126 ret_code = utils_group_id_from_name(
1127 value->value.group_name, &gid);
1128 if (ret_code != LTTNG_OK) {
1129 goto end;
1130 }
1131 integral_value = (int) gid;
1132 } else {
1133 integral_value = (int) value->value.gid;
1134 }
1135 break;
1136 default:
1137 ret_code = LTTNG_ERR_INVALID;
1138 goto end;
1139 }
1140
1141 tracker = _trace_ust_get_process_attr_tracker(session, process_attr);
1142 if (!tracker) {
1143 ret_code = LTTNG_ERR_INVALID;
1144 }
1145
1146 status = process_attr_tracker_inclusion_set_remove_value(
1147 tracker, value);
1148 if (status != PROCESS_ATTR_TRACKER_STATUS_OK) {
1149 switch (status) {
1150 case PROCESS_ATTR_TRACKER_STATUS_MISSING:
1151 ret_code = LTTNG_ERR_PROCESS_ATTR_MISSING;
1152 break;
1153 case PROCESS_ATTR_TRACKER_STATUS_INVALID_TRACKING_POLICY:
1154 ret_code = LTTNG_ERR_PROCESS_ATTR_TRACKER_INVALID_TRACKING_POLICY;
1155 break;
1156 case PROCESS_ATTR_TRACKER_STATUS_ERROR:
1157 default:
1158 ret_code = LTTNG_ERR_UNK;
1159 break;
1160 }
1161 goto end;
1162 }
1163
1164 DBG("User space untrack %s %d for session id %" PRIu64,
1165 lttng_process_attr_to_string(process_attr),
1166 integral_value, session->id);
1167
1168 ret_code = id_tracker_del_id(id_tracker, integral_value);
1169 if (ret_code != LTTNG_OK) {
1170 goto end;
1171 }
1172 /* Add session to application */
1173 switch (process_attr) {
1174 case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID:
1175 app = ust_app_find_by_pid(integral_value);
1176 if (app) {
1177 should_update_apps = true;
1178 }
1179 break;
1180 default:
1181 should_update_apps = true;
1182 break;
1183 }
1184 if (should_update_apps && session->active) {
1185 ust_app_global_update_all(session);
1186 }
1187 end:
1188 return ret_code;
1189 }
1190
1191 /*
1192 * RCU safe free context structure.
1193 */
1194 static void destroy_context_rcu(struct rcu_head *head)
1195 {
1196 struct lttng_ht_node_ulong *node =
1197 caa_container_of(head, struct lttng_ht_node_ulong, head);
1198 struct ltt_ust_context *ctx =
1199 caa_container_of(node, struct ltt_ust_context, node);
1200
1201 trace_ust_destroy_context(ctx);
1202 }
1203
1204 /*
1205 * Cleanup UST context hash table.
1206 */
1207 static void destroy_contexts(struct lttng_ht *ht)
1208 {
1209 int ret;
1210 struct lttng_ht_node_ulong *node;
1211 struct lttng_ht_iter iter;
1212 struct ltt_ust_context *ctx;
1213
1214 assert(ht);
1215
1216 rcu_read_lock();
1217 cds_lfht_for_each_entry(ht->ht, &iter.iter, node, node) {
1218 /* Remove from ordered list. */
1219 ctx = caa_container_of(node, struct ltt_ust_context, node);
1220 cds_list_del(&ctx->list);
1221 /* Remove from channel's hash table. */
1222 ret = lttng_ht_del(ht, &iter);
1223 if (!ret) {
1224 call_rcu(&node->head, destroy_context_rcu);
1225 }
1226 }
1227 rcu_read_unlock();
1228
1229 ht_cleanup_push(ht);
1230 }
1231
1232 /*
1233 * Cleanup ust event structure.
1234 */
1235 void trace_ust_destroy_event(struct ltt_ust_event *event)
1236 {
1237 assert(event);
1238
1239 DBG2("Trace destroy UST event %s", event->attr.name);
1240 free(event->filter_expression);
1241 free(event->filter);
1242 free(event->exclusion);
1243 free(event);
1244 }
1245
1246 /*
1247 * Cleanup ust context structure.
1248 */
1249 void trace_ust_destroy_context(struct ltt_ust_context *ctx)
1250 {
1251 assert(ctx);
1252
1253 if (ctx->ctx.ctx == LTTNG_UST_CONTEXT_APP_CONTEXT) {
1254 free(ctx->ctx.u.app_ctx.provider_name);
1255 free(ctx->ctx.u.app_ctx.ctx_name);
1256 }
1257 free(ctx);
1258 }
1259
1260 /*
1261 * URCU intermediate call to complete destroy event.
1262 */
1263 static void destroy_event_rcu(struct rcu_head *head)
1264 {
1265 struct lttng_ht_node_str *node =
1266 caa_container_of(head, struct lttng_ht_node_str, head);
1267 struct ltt_ust_event *event =
1268 caa_container_of(node, struct ltt_ust_event, node);
1269
1270 trace_ust_destroy_event(event);
1271 }
1272
1273 /*
1274 * Cleanup UST events hashtable.
1275 */
1276 static void destroy_events(struct lttng_ht *events)
1277 {
1278 int ret;
1279 struct lttng_ht_node_str *node;
1280 struct lttng_ht_iter iter;
1281
1282 assert(events);
1283
1284 rcu_read_lock();
1285 cds_lfht_for_each_entry(events->ht, &iter.iter, node, node) {
1286 ret = lttng_ht_del(events, &iter);
1287 assert(!ret);
1288 call_rcu(&node->head, destroy_event_rcu);
1289 }
1290 rcu_read_unlock();
1291
1292 ht_cleanup_push(events);
1293 }
1294
1295 /*
1296 * Cleanup ust channel structure.
1297 *
1298 * Should _NOT_ be called with RCU read lock held.
1299 */
1300 static void _trace_ust_destroy_channel(struct ltt_ust_channel *channel)
1301 {
1302 assert(channel);
1303
1304 DBG2("Trace destroy UST channel %s", channel->name);
1305
1306 free(channel);
1307 }
1308
1309 /*
1310 * URCU intermediate call to complete destroy channel.
1311 */
1312 static void destroy_channel_rcu(struct rcu_head *head)
1313 {
1314 struct lttng_ht_node_str *node =
1315 caa_container_of(head, struct lttng_ht_node_str, head);
1316 struct ltt_ust_channel *channel =
1317 caa_container_of(node, struct ltt_ust_channel, node);
1318
1319 _trace_ust_destroy_channel(channel);
1320 }
1321
1322 void trace_ust_destroy_channel(struct ltt_ust_channel *channel)
1323 {
1324 /* Destroying all events of the channel */
1325 destroy_events(channel->events);
1326 /* Destroying all context of the channel */
1327 destroy_contexts(channel->ctx);
1328
1329 call_rcu(&channel->node.head, destroy_channel_rcu);
1330 }
1331
1332 /*
1333 * Remove an UST channel from a channel HT.
1334 */
1335 void trace_ust_delete_channel(struct lttng_ht *ht,
1336 struct ltt_ust_channel *channel)
1337 {
1338 int ret;
1339 struct lttng_ht_iter iter;
1340
1341 assert(ht);
1342 assert(channel);
1343
1344 iter.iter.node = &channel->node.node;
1345 ret = lttng_ht_del(ht, &iter);
1346 assert(!ret);
1347 }
1348
1349 /*
1350 * Iterate over a hash table containing channels and cleanup safely.
1351 */
1352 static void destroy_channels(struct lttng_ht *channels)
1353 {
1354 struct lttng_ht_node_str *node;
1355 struct lttng_ht_iter iter;
1356
1357 assert(channels);
1358
1359 rcu_read_lock();
1360 cds_lfht_for_each_entry(channels->ht, &iter.iter, node, node) {
1361 struct ltt_ust_channel *chan =
1362 caa_container_of(node, struct ltt_ust_channel, node);
1363
1364 trace_ust_delete_channel(channels, chan);
1365 trace_ust_destroy_channel(chan);
1366 }
1367 rcu_read_unlock();
1368
1369 ht_cleanup_push(channels);
1370 }
1371
1372 /*
1373 * Cleanup UST global domain.
1374 */
1375 static void destroy_domain_global(struct ltt_ust_domain_global *dom)
1376 {
1377 assert(dom);
1378
1379 destroy_channels(dom->channels);
1380 }
1381
1382 /*
1383 * Cleanup ust session structure, keeping data required by
1384 * destroy notifier.
1385 *
1386 * Should *NOT* be called with RCU read-side lock held.
1387 */
1388 void trace_ust_destroy_session(struct ltt_ust_session *session)
1389 {
1390 struct agent *agt;
1391 struct buffer_reg_uid *reg, *sreg;
1392 struct lttng_ht_iter iter;
1393
1394 assert(session);
1395
1396 DBG2("Trace UST destroy session %" PRIu64, session->id);
1397
1398 /* Cleaning up UST domain */
1399 destroy_domain_global(&session->domain_global);
1400
1401 rcu_read_lock();
1402 cds_lfht_for_each_entry(session->agents->ht, &iter.iter, agt, node.node) {
1403 int ret = lttng_ht_del(session->agents, &iter);
1404
1405 assert(!ret);
1406 agent_destroy(agt);
1407 }
1408 rcu_read_unlock();
1409
1410 ht_cleanup_push(session->agents);
1411
1412 /* Cleanup UID buffer registry object(s). */
1413 cds_list_for_each_entry_safe(reg, sreg, &session->buffer_reg_uid_list,
1414 lnode) {
1415 cds_list_del(&reg->lnode);
1416 buffer_reg_uid_remove(reg);
1417 buffer_reg_uid_destroy(reg, session->consumer);
1418 }
1419
1420 process_attr_tracker_destroy(session->tracker_vpid);
1421 process_attr_tracker_destroy(session->tracker_vuid);
1422 process_attr_tracker_destroy(session->tracker_vgid);
1423
1424 fini_id_tracker(&session->vpid_tracker);
1425 fini_id_tracker(&session->vuid_tracker);
1426 fini_id_tracker(&session->vgid_tracker);
1427 lttng_trace_chunk_put(session->current_trace_chunk);
1428 }
1429
1430 /* Free elements needed by destroy notifiers. */
1431 void trace_ust_free_session(struct ltt_ust_session *session)
1432 {
1433 consumer_output_put(session->consumer);
1434 free(session);
1435 }
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