Commit | Line | Data |
---|---|---|
2f8f53af DG |
1 | /* |
2 | * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com> | |
3 | * David Goulet <dgoulet@efficios.com> | |
7591bab1 | 4 | * 2015 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
2f8f53af DG |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License, version 2 only, as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | * more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along with | |
16 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
17 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | */ | |
19 | ||
6c1c0768 | 20 | #define _LGPL_SOURCE |
2a174661 | 21 | #include <common/common.h> |
c70636a7 | 22 | #include <common/uuid.h> |
a8b66566 JR |
23 | #include <common/time.h> |
24 | #include <common/utils.h> | |
c70636a7 | 25 | #include <common/uuid.h> |
6ec9dc48 | 26 | #include <common/compat/path.h> |
7591bab1 | 27 | #include <urcu/rculist.h> |
2a174661 | 28 | |
d37856b8 JR |
29 | #include <sys/stat.h> |
30 | ||
2a174661 | 31 | #include "ctf-trace.h" |
a620c891 | 32 | #include "lttng-relayd.h" |
2f8f53af | 33 | #include "session.h" |
23c8ff50 | 34 | #include "sessiond-trace-chunks.h" |
a620c891 | 35 | #include "stream.h" |
a0409c33 | 36 | #include <common/defaults.h> |
d37856b8 | 37 | #include "utils.h" |
2a174661 DG |
38 | |
39 | /* Global session id used in the session creation. */ | |
40 | static uint64_t last_relay_session_id; | |
7591bab1 | 41 | static pthread_mutex_t last_relay_session_id_lock = PTHREAD_MUTEX_INITIALIZER; |
2a174661 | 42 | |
a8b66566 | 43 | static int init_session_output_path_group_by_host(struct relay_session *session) |
ecd1a12f MD |
44 | { |
45 | /* | |
46 | * session_directory: | |
47 | * | |
48 | * if base_path is \0' | |
49 | * hostname/session_name | |
50 | * else | |
51 | * hostname/base_path | |
52 | */ | |
53 | char *session_directory = NULL; | |
54 | int ret = 0; | |
55 | ||
56 | if (session->output_path[0] != '\0') { | |
57 | goto end; | |
58 | } | |
59 | /* | |
60 | * If base path is set, it overrides the session name for the | |
61 | * session relative base path. No timestamp is appended if the | |
62 | * base path is overridden. | |
63 | * | |
64 | * If the session name already contains the creation time (e.g. | |
65 | * auto-<timestamp>, don't append yet another timestamp after | |
66 | * the session name in the generated path. | |
67 | * | |
68 | * Otherwise, generate the path with session_name-<timestamp>. | |
69 | */ | |
70 | if (session->base_path[0] != '\0') { | |
71 | ret = asprintf(&session_directory, "%s/%s", session->hostname, | |
72 | session->base_path); | |
73 | } else if (session->session_name_contains_creation_time) { | |
74 | ret = asprintf(&session_directory, "%s/%s", session->hostname, | |
75 | session->session_name); | |
76 | } else { | |
a8b66566 | 77 | char session_creation_datetime[DATETIME_STR_LEN]; |
ecd1a12f | 78 | |
a8b66566 JR |
79 | ret = time_to_datetime_str( |
80 | LTTNG_OPTIONAL_GET(session->creation_time), | |
81 | session_creation_datetime, | |
82 | sizeof(session_creation_datetime)); | |
83 | if (ret) { | |
ecd1a12f MD |
84 | ERR("Failed to format session creation timestamp while initializing session output directory handle"); |
85 | ret = -1; | |
86 | goto end; | |
87 | } | |
a8b66566 | 88 | |
ecd1a12f MD |
89 | ret = asprintf(&session_directory, "%s/%s-%s", |
90 | session->hostname, session->session_name, | |
91 | session_creation_datetime); | |
92 | } | |
93 | if (ret < 0) { | |
94 | PERROR("Failed to format session directory name"); | |
95 | goto end; | |
96 | } | |
97 | ||
98 | if (strlen(session_directory) >= LTTNG_PATH_MAX) { | |
99 | ERR("Session output directory exceeds maximal length"); | |
100 | ret = -1; | |
101 | goto end; | |
102 | } | |
103 | strcpy(session->output_path, session_directory); | |
104 | ret = 0; | |
105 | ||
106 | end: | |
107 | free(session_directory); | |
108 | return ret; | |
109 | } | |
110 | ||
a8b66566 JR |
111 | static int init_session_output_path_group_by_session( |
112 | struct relay_session *session) | |
113 | { | |
114 | /* | |
115 | * session_directory: | |
116 | * | |
117 | * session_name/hostname-creation_time/base_path | |
118 | * | |
119 | * For session name including the datetime, use it as the complete name | |
120 | * since. Do not perform modification on it since the datetime is an | |
121 | * integral part of the name and how a user identify a session. | |
122 | */ | |
123 | int ret = 0; | |
124 | char *session_directory = NULL; | |
125 | char creation_datetime[DATETIME_STR_LEN]; | |
126 | ||
127 | if (session->output_path[0] != '\0') { | |
128 | /* output_path as been generated already */ | |
129 | goto end; | |
130 | } | |
131 | ||
132 | ret = time_to_datetime_str(LTTNG_OPTIONAL_GET(session->creation_time), | |
133 | creation_datetime, sizeof(creation_datetime)); | |
134 | if (ret) { | |
135 | ERR("Failed to format session creation timestamp while initializing session output directory handle"); | |
136 | ret = -1; | |
137 | goto end; | |
138 | } | |
139 | ||
140 | ret = asprintf(&session_directory, "%s/%s-%s%s%s", | |
141 | session->session_name, session->hostname, | |
142 | creation_datetime, | |
143 | session->base_path[0] != '\0' ? "/" : "", | |
144 | session->base_path); | |
145 | if (ret < 0) { | |
146 | PERROR("Failed to format session directory name"); | |
147 | goto end; | |
148 | } | |
149 | ||
150 | if (strlen(session_directory) >= LTTNG_PATH_MAX) { | |
151 | ERR("Session output directory exceeds maximal length"); | |
152 | ret = -1; | |
153 | goto end; | |
154 | } | |
155 | ||
156 | strcpy(session->output_path, session_directory); | |
157 | ret = 0; | |
158 | ||
159 | end: | |
160 | free(session_directory); | |
161 | return ret; | |
162 | } | |
163 | ||
164 | static int init_session_output_path(struct relay_session *session) | |
165 | { | |
166 | int ret; | |
167 | ||
168 | switch (opt_group_output_by) { | |
169 | case RELAYD_GROUP_OUTPUT_BY_HOST: | |
170 | ret = init_session_output_path_group_by_host(session); | |
171 | break; | |
172 | case RELAYD_GROUP_OUTPUT_BY_SESSION: | |
173 | ret = init_session_output_path_group_by_session(session); | |
174 | break; | |
175 | case RELAYD_GROUP_OUTPUT_BY_UNKNOWN: | |
176 | default: | |
177 | abort(); | |
178 | break; | |
179 | } | |
180 | ||
181 | return ret; | |
182 | } | |
183 | ||
7ceefac4 JG |
184 | static struct lttng_directory_handle *session_create_output_directory_handle( |
185 | struct relay_session *session) | |
186 | { | |
187 | int ret; | |
188 | /* | |
189 | * relayd_output_path/session_directory | |
190 | * e.g. /home/user/lttng-traces/hostname/session_name | |
191 | */ | |
192 | char *full_session_path = NULL; | |
193 | struct lttng_directory_handle *handle = NULL; | |
194 | ||
195 | pthread_mutex_lock(&session->lock); | |
196 | full_session_path = create_output_path(session->output_path); | |
197 | if (!full_session_path) { | |
198 | goto end; | |
199 | } | |
200 | ||
201 | ret = utils_mkdir_recursive( | |
202 | full_session_path, S_IRWXU | S_IRWXG, -1, -1); | |
203 | if (ret) { | |
204 | ERR("Failed to create session output path \"%s\"", | |
205 | full_session_path); | |
206 | goto end; | |
207 | } | |
208 | ||
209 | handle = lttng_directory_handle_create(full_session_path); | |
210 | end: | |
211 | pthread_mutex_unlock(&session->lock); | |
212 | free(full_session_path); | |
213 | return handle; | |
214 | } | |
215 | ||
1e791a74 JG |
216 | static int session_set_anonymous_chunk(struct relay_session *session) |
217 | { | |
218 | int ret = 0; | |
219 | struct lttng_trace_chunk *chunk = NULL; | |
220 | enum lttng_trace_chunk_status status; | |
cbf53d23 | 221 | struct lttng_directory_handle *output_directory; |
1e791a74 | 222 | |
cbf53d23 JG |
223 | output_directory = session_create_output_directory_handle(session); |
224 | if (!output_directory) { | |
1e791a74 JG |
225 | goto end; |
226 | } | |
227 | ||
228 | chunk = lttng_trace_chunk_create_anonymous(); | |
229 | if (!chunk) { | |
230 | goto end; | |
231 | } | |
232 | ||
233 | status = lttng_trace_chunk_set_credentials_current_user(chunk); | |
234 | if (status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
235 | ret = -1; | |
236 | goto end; | |
237 | } | |
238 | ||
cbf53d23 | 239 | status = lttng_trace_chunk_set_as_owner(chunk, output_directory); |
1e791a74 JG |
240 | if (status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
241 | ret = -1; | |
242 | goto end; | |
243 | } | |
7145f5e9 JG |
244 | |
245 | lttng_trace_chunk_set_fd_tracker(chunk, the_fd_tracker); | |
cbf53d23 | 246 | output_directory = NULL; |
1e791a74 JG |
247 | session->current_trace_chunk = chunk; |
248 | chunk = NULL; | |
249 | end: | |
250 | lttng_trace_chunk_put(chunk); | |
cbf53d23 | 251 | lttng_directory_handle_put(output_directory); |
1e791a74 JG |
252 | return ret; |
253 | } | |
254 | ||
6ec9dc48 JG |
255 | /* |
256 | * Check if a name is safe to use in a path. | |
257 | * | |
258 | * A name that is deemed "path-safe": | |
259 | * - Does not contains a path separator (/ or \, platform dependant), | |
260 | * - Does not start with a '.' (hidden file/folder), | |
261 | * - Is not empty. | |
262 | */ | |
263 | static bool is_name_path_safe(const char *name) | |
264 | { | |
265 | const size_t name_len = strlen(name); | |
266 | ||
267 | /* Not empty. */ | |
268 | if (name_len == 0) { | |
269 | WARN("An empty name is not allowed to be used in a path"); | |
270 | return false; | |
271 | } | |
272 | /* Does not start with '.'. */ | |
273 | if (name[0] == '.') { | |
274 | WARN("Name \"%s\" is not allowed to be used in a path since it starts with '.'", name); | |
275 | return false; | |
276 | } | |
277 | /* Does not contain a path-separator. */ | |
278 | if (strchr(name, LTTNG_PATH_SEPARATOR)) { | |
279 | WARN("Name \"%s\" is not allowed to be used in a path since it contains a path separator", name); | |
280 | return false; | |
281 | } | |
282 | ||
283 | return true; | |
284 | } | |
285 | ||
2a174661 DG |
286 | /* |
287 | * Create a new session by assigning a new session ID. | |
288 | * | |
289 | * Return allocated session or else NULL. | |
290 | */ | |
7591bab1 | 291 | struct relay_session *session_create(const char *session_name, |
6fa5fe7c | 292 | const char *hostname, const char *base_path, |
db1da059 JG |
293 | uint32_t live_timer, |
294 | bool snapshot, | |
295 | const lttng_uuid sessiond_uuid, | |
296 | const uint64_t *id_sessiond, | |
297 | const uint64_t *current_chunk_id, | |
298 | const time_t *creation_time, | |
299 | uint32_t major, | |
46ef2188 MD |
300 | uint32_t minor, |
301 | bool session_name_contains_creation_time) | |
2a174661 | 302 | { |
23c8ff50 | 303 | int ret; |
590f0324 JG |
304 | struct relay_session *session = NULL; |
305 | ||
5c956ba3 JG |
306 | assert(session_name); |
307 | assert(hostname); | |
308 | assert(base_path); | |
309 | ||
6ec9dc48 JG |
310 | if (!is_name_path_safe(session_name)) { |
311 | ERR("Refusing to create session as the provided session name is not path-safe"); | |
312 | goto error; | |
313 | } | |
314 | if (!is_name_path_safe(hostname)) { | |
315 | ERR("Refusing to create session as the provided hostname is not path-safe"); | |
590f0324 JG |
316 | goto error; |
317 | } | |
5c956ba3 | 318 | if (strstr(base_path, "../")) { |
590f0324 JG |
319 | ERR("Invalid session base path walks up the path hierarchy: \"%s\"", |
320 | base_path); | |
321 | goto error; | |
322 | } | |
2a174661 DG |
323 | |
324 | session = zmalloc(sizeof(*session)); | |
325 | if (!session) { | |
1e791a74 | 326 | PERROR("Failed to allocate session"); |
2a174661 DG |
327 | goto error; |
328 | } | |
bb5d54e7 MD |
329 | if (lttng_strncpy(session->session_name, session_name, |
330 | sizeof(session->session_name))) { | |
1e791a74 | 331 | WARN("Session name exceeds maximal allowed length"); |
bb5d54e7 MD |
332 | goto error; |
333 | } | |
334 | if (lttng_strncpy(session->hostname, hostname, | |
335 | sizeof(session->hostname))) { | |
1e791a74 | 336 | WARN("Hostname exceeds maximal allowed length"); |
bb5d54e7 MD |
337 | goto error; |
338 | } | |
6fa5fe7c MD |
339 | if (lttng_strncpy(session->base_path, base_path, |
340 | sizeof(session->base_path))) { | |
341 | WARN("Base path exceeds maximal allowed length"); | |
342 | goto error; | |
343 | } | |
46ef2188 MD |
344 | if (creation_time) { |
345 | LTTNG_OPTIONAL_SET(&session->creation_time, *creation_time); | |
346 | } | |
347 | session->session_name_contains_creation_time = | |
348 | session_name_contains_creation_time; | |
6fa5fe7c | 349 | |
2a174661 DG |
350 | session->ctf_traces_ht = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
351 | if (!session->ctf_traces_ht) { | |
2a174661 DG |
352 | goto error; |
353 | } | |
354 | ||
7591bab1 | 355 | pthread_mutex_lock(&last_relay_session_id_lock); |
2a174661 | 356 | session->id = ++last_relay_session_id; |
7591bab1 MD |
357 | pthread_mutex_unlock(&last_relay_session_id_lock); |
358 | ||
359 | session->major = major; | |
360 | session->minor = minor; | |
2a174661 | 361 | lttng_ht_node_init_u64(&session->session_n, session->id); |
7591bab1 MD |
362 | urcu_ref_init(&session->ref); |
363 | CDS_INIT_LIST_HEAD(&session->recv_list); | |
364 | pthread_mutex_init(&session->lock, NULL); | |
7591bab1 MD |
365 | pthread_mutex_init(&session->recv_list_lock, NULL); |
366 | ||
7591bab1 MD |
367 | session->live_timer = live_timer; |
368 | session->snapshot = snapshot; | |
23c8ff50 JG |
369 | lttng_uuid_copy(session->sessiond_uuid, sessiond_uuid); |
370 | ||
1e791a74 JG |
371 | if (id_sessiond) { |
372 | LTTNG_OPTIONAL_SET(&session->id_sessiond, *id_sessiond); | |
373 | } | |
374 | ||
d519f442 JR |
375 | if (major == 2 && minor >= 11) { |
376 | /* Only applies for 2.11+ peers using trace chunks. */ | |
377 | ret = init_session_output_path(session); | |
378 | if (ret) { | |
379 | goto error; | |
380 | } | |
ecd1a12f | 381 | } |
d519f442 | 382 | |
23c8ff50 JG |
383 | ret = sessiond_trace_chunk_registry_session_created( |
384 | sessiond_trace_chunk_registry, sessiond_uuid); | |
385 | if (ret) { | |
386 | goto error; | |
387 | } | |
7591bab1 | 388 | |
1e791a74 | 389 | if (id_sessiond && current_chunk_id) { |
7ceefac4 JG |
390 | enum lttng_trace_chunk_status chunk_status; |
391 | struct lttng_directory_handle *session_output_directory; | |
392 | ||
1e791a74 JG |
393 | session->current_trace_chunk = |
394 | sessiond_trace_chunk_registry_get_chunk( | |
395 | sessiond_trace_chunk_registry, | |
396 | session->sessiond_uuid, | |
397 | session->id_sessiond.value, | |
398 | *current_chunk_id); | |
399 | if (!session->current_trace_chunk) { | |
c70636a7 | 400 | char uuid_str[LTTNG_UUID_STR_LEN]; |
1e791a74 JG |
401 | |
402 | lttng_uuid_to_str(sessiond_uuid, uuid_str); | |
403 | ERR("Could not find trace chunk: sessiond = {%s}, sessiond session id = %" PRIu64 ", trace chunk id = %" PRIu64, | |
404 | uuid_str, *id_sessiond, | |
405 | *current_chunk_id); | |
53eb691c | 406 | goto error; |
1e791a74 | 407 | } |
7ceefac4 JG |
408 | |
409 | chunk_status = lttng_trace_chunk_get_session_output_directory_handle( | |
410 | session->current_trace_chunk, | |
411 | &session_output_directory); | |
412 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
413 | goto error; | |
414 | } | |
415 | ||
416 | assert(session_output_directory); | |
417 | session->output_directory = session_output_directory; | |
1e791a74 JG |
418 | } else if (!id_sessiond) { |
419 | /* | |
420 | * Pre-2.11 peers will not announce trace chunks. An | |
421 | * anonymous trace chunk which will remain set for the | |
422 | * duration of the session is created. | |
423 | */ | |
424 | ret = session_set_anonymous_chunk(session); | |
425 | if (ret) { | |
426 | goto error; | |
427 | } | |
7ceefac4 JG |
428 | } else { |
429 | session->output_directory = | |
430 | session_create_output_directory_handle(session); | |
431 | if (!session->output_directory) { | |
432 | goto error; | |
433 | } | |
1e791a74 JG |
434 | } |
435 | ||
7591bab1 | 436 | lttng_ht_add_unique_u64(sessions_ht, &session->session_n); |
bb5d54e7 | 437 | return session; |
2a174661 DG |
438 | |
439 | error: | |
1e791a74 | 440 | session_put(session); |
bb5d54e7 | 441 | return NULL; |
2a174661 | 442 | } |
2f8f53af | 443 | |
7591bab1 MD |
444 | /* Should be called with RCU read-side lock held. */ |
445 | bool session_get(struct relay_session *session) | |
446 | { | |
ce4d4083 | 447 | return urcu_ref_get_unless_zero(&session->ref); |
7591bab1 MD |
448 | } |
449 | ||
2f8f53af | 450 | /* |
7591bab1 MD |
451 | * Lookup a session within the session hash table using the session id |
452 | * as key. A session reference is taken when a session is returned. | |
453 | * session_put() must be called on that session. | |
2f8f53af DG |
454 | * |
455 | * Return session or NULL if not found. | |
456 | */ | |
7591bab1 | 457 | struct relay_session *session_get_by_id(uint64_t id) |
2f8f53af DG |
458 | { |
459 | struct relay_session *session = NULL; | |
2a174661 | 460 | struct lttng_ht_node_u64 *node; |
2f8f53af DG |
461 | struct lttng_ht_iter iter; |
462 | ||
7591bab1 MD |
463 | rcu_read_lock(); |
464 | lttng_ht_lookup(sessions_ht, &id, &iter); | |
2a174661 | 465 | node = lttng_ht_iter_get_node_u64(&iter); |
2f8f53af | 466 | if (!node) { |
2a174661 | 467 | DBG("Session find by ID %" PRIu64 " id NOT found", id); |
2f8f53af DG |
468 | goto end; |
469 | } | |
470 | session = caa_container_of(node, struct relay_session, session_n); | |
2a174661 | 471 | DBG("Session find by ID %" PRIu64 " id found", id); |
7591bab1 MD |
472 | if (!session_get(session)) { |
473 | session = NULL; | |
474 | } | |
2f8f53af | 475 | end: |
7591bab1 | 476 | rcu_read_unlock(); |
2f8f53af DG |
477 | return session; |
478 | } | |
2a174661 | 479 | |
7591bab1 MD |
480 | static void rcu_destroy_session(struct rcu_head *rcu_head) |
481 | { | |
482 | struct relay_session *session = | |
483 | caa_container_of(rcu_head, struct relay_session, | |
484 | rcu_node); | |
49e614cb MD |
485 | /* |
486 | * Since each trace has a reference on the session, it means | |
487 | * that if we are at the point where we teardown the session, no | |
488 | * trace belonging to that session exist at this point. | |
489 | * Calling lttng_ht_destroy in call_rcu worker thread so we | |
490 | * don't hold the RCU read-side lock while calling it. | |
491 | */ | |
492 | lttng_ht_destroy(session->ctf_traces_ht); | |
7591bab1 MD |
493 | free(session); |
494 | } | |
495 | ||
2a174661 DG |
496 | /* |
497 | * Delete session from the given hash table. | |
498 | * | |
499 | * Return lttng ht del error code being 0 on success and 1 on failure. | |
500 | */ | |
7591bab1 | 501 | static int session_delete(struct relay_session *session) |
2a174661 DG |
502 | { |
503 | struct lttng_ht_iter iter; | |
504 | ||
2a174661 | 505 | iter.iter.node = &session->session_n.node; |
7591bab1 | 506 | return lttng_ht_del(sessions_ht, &iter); |
2a174661 DG |
507 | } |
508 | ||
7591bab1 MD |
509 | |
510 | static void destroy_session(struct relay_session *session) | |
511 | { | |
512 | int ret; | |
513 | ||
514 | ret = session_delete(session); | |
515 | assert(!ret); | |
639ddf68 | 516 | lttng_trace_chunk_put(session->current_trace_chunk); |
c35f9726 | 517 | session->current_trace_chunk = NULL; |
62bad3bf JG |
518 | lttng_trace_chunk_put(session->pending_closure_trace_chunk); |
519 | session->pending_closure_trace_chunk = NULL; | |
23c8ff50 JG |
520 | ret = sessiond_trace_chunk_registry_session_destroyed( |
521 | sessiond_trace_chunk_registry, session->sessiond_uuid); | |
522 | assert(!ret); | |
7ceefac4 JG |
523 | lttng_directory_handle_put(session->output_directory); |
524 | session->output_directory = NULL; | |
7591bab1 MD |
525 | call_rcu(&session->rcu_node, rcu_destroy_session); |
526 | } | |
527 | ||
feb33caa | 528 | static void session_release(struct urcu_ref *ref) |
2a174661 | 529 | { |
7591bab1 MD |
530 | struct relay_session *session = |
531 | caa_container_of(ref, struct relay_session, ref); | |
2a174661 | 532 | |
7591bab1 MD |
533 | destroy_session(session); |
534 | } | |
2a174661 | 535 | |
7591bab1 MD |
536 | void session_put(struct relay_session *session) |
537 | { | |
874ec45e JG |
538 | if (!session) { |
539 | return; | |
540 | } | |
7591bab1 | 541 | rcu_read_lock(); |
7591bab1 | 542 | urcu_ref_put(&session->ref, session_release); |
7591bab1 | 543 | rcu_read_unlock(); |
2a174661 DG |
544 | } |
545 | ||
7591bab1 | 546 | int session_close(struct relay_session *session) |
2a174661 DG |
547 | { |
548 | int ret = 0; | |
7591bab1 MD |
549 | struct ctf_trace *trace; |
550 | struct lttng_ht_iter iter; | |
551 | struct relay_stream *stream; | |
552 | ||
553 | pthread_mutex_lock(&session->lock); | |
554 | DBG("closing session %" PRIu64 ": is conn already closed %d", | |
555 | session->id, session->connection_closed); | |
7591bab1 | 556 | session->connection_closed = true; |
7591bab1 | 557 | pthread_mutex_unlock(&session->lock); |
2a174661 | 558 | |
7591bab1 MD |
559 | rcu_read_lock(); |
560 | cds_lfht_for_each_entry(session->ctf_traces_ht->ht, | |
561 | &iter.iter, trace, node.node) { | |
562 | ret = ctf_trace_close(trace); | |
563 | if (ret) { | |
564 | goto rcu_unlock; | |
2a174661 DG |
565 | } |
566 | } | |
7591bab1 MD |
567 | cds_list_for_each_entry_rcu(stream, &session->recv_list, |
568 | recv_node) { | |
bda7c7b9 JG |
569 | /* Close streams which have not been published yet. */ |
570 | try_stream_close(stream); | |
7591bab1 MD |
571 | } |
572 | rcu_unlock: | |
573 | rcu_read_unlock(); | |
574 | if (ret) { | |
575 | return ret; | |
576 | } | |
577 | /* Put self-reference from create. */ | |
578 | session_put(session); | |
579 | return ret; | |
2a174661 DG |
580 | } |
581 | ||
98ba050e JR |
582 | int session_abort(struct relay_session *session) |
583 | { | |
584 | int ret = 0; | |
585 | ||
586 | if (!session) { | |
587 | return 0; | |
588 | } | |
589 | ||
590 | pthread_mutex_lock(&session->lock); | |
591 | DBG("aborting session %" PRIu64, session->id); | |
98ba050e | 592 | session->aborted = true; |
98ba050e JR |
593 | pthread_mutex_unlock(&session->lock); |
594 | return ret; | |
595 | } | |
596 | ||
7591bab1 | 597 | void print_sessions(void) |
2a174661 | 598 | { |
2a174661 | 599 | struct lttng_ht_iter iter; |
7591bab1 | 600 | struct relay_session *session; |
2a174661 | 601 | |
ce3f3ba3 JG |
602 | if (!sessions_ht) { |
603 | return; | |
604 | } | |
605 | ||
2a174661 | 606 | rcu_read_lock(); |
7591bab1 MD |
607 | cds_lfht_for_each_entry(sessions_ht->ht, &iter.iter, session, |
608 | session_n.node) { | |
609 | if (!session_get(session)) { | |
610 | continue; | |
611 | } | |
612 | DBG("session %p refcount %ld session %" PRIu64, | |
613 | session, | |
614 | session->ref.refcount, | |
615 | session->id); | |
616 | session_put(session); | |
2a174661 | 617 | } |
2a174661 | 618 | rcu_read_unlock(); |
2a174661 | 619 | } |