Commit | Line | Data |
---|---|---|
ab0ee2ca | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
ab0ee2ca | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
ab0ee2ca | 5 | * |
ab0ee2ca JG |
6 | */ |
7 | ||
c9e313bc | 8 | #include "notification-thread-commands.hpp" |
28ab034a JG |
9 | #include "notification-thread.hpp" |
10 | ||
c9e313bc | 11 | #include <common/error.hpp> |
28ab034a JG |
12 | |
13 | #include <lttng/lttng-error.h> | |
14 | #include <lttng/trigger/trigger.h> | |
15 | ||
ab0ee2ca | 16 | #include <inttypes.h> |
28ab034a JG |
17 | #include <stdint.h> |
18 | #include <unistd.h> | |
ab0ee2ca | 19 | |
28ab034a | 20 | static void init_notification_thread_command(struct notification_thread_command *cmd) |
ab0ee2ca | 21 | { |
ab0ee2ca | 22 | CDS_INIT_LIST_HEAD(&cmd->cmd_list_node); |
8ada111f | 23 | lttng_waiter_init(&cmd->reply_waiter); |
ab0ee2ca JG |
24 | } |
25 | ||
28ab034a JG |
26 | static int run_command_wait(struct notification_thread_handle *handle, |
27 | struct notification_thread_command *cmd) | |
ab0ee2ca JG |
28 | { |
29 | int ret; | |
30 | uint64_t notification_counter = 1; | |
31 | ||
ab0ee2ca JG |
32 | pthread_mutex_lock(&handle->cmd_queue.lock); |
33 | /* Add to queue. */ | |
28ab034a | 34 | cds_list_add_tail(&cmd->cmd_list_node, &handle->cmd_queue.list); |
ab0ee2ca | 35 | /* Wake-up thread. */ |
28ab034a JG |
36 | ret = lttng_write( |
37 | handle->cmd_queue.event_fd, ¬ification_counter, sizeof(notification_counter)); | |
58d3fed5 | 38 | if (ret != sizeof(notification_counter)) { |
ab0ee2ca JG |
39 | PERROR("write to notification thread's queue event fd"); |
40 | /* | |
41 | * Remove the command from the list so the notification | |
42 | * thread does not process it. | |
43 | */ | |
44 | cds_list_del(&cmd->cmd_list_node); | |
45 | goto error_unlock_queue; | |
46 | } | |
47 | pthread_mutex_unlock(&handle->cmd_queue.lock); | |
48 | ||
8ada111f | 49 | lttng_waiter_wait(&cmd->reply_waiter); |
ab0ee2ca JG |
50 | return 0; |
51 | error_unlock_queue: | |
52 | pthread_mutex_unlock(&handle->cmd_queue.lock); | |
53 | return -1; | |
54 | } | |
55 | ||
28ab034a JG |
56 | static struct notification_thread_command * |
57 | notification_thread_command_copy(const struct notification_thread_command *original_cmd) | |
0ab399e0 JG |
58 | { |
59 | struct notification_thread_command *new_cmd; | |
60 | ||
64803277 | 61 | new_cmd = zmalloc<notification_thread_command>(); |
0ab399e0 JG |
62 | if (!new_cmd) { |
63 | goto end; | |
64 | } | |
65 | ||
66 | *new_cmd = *original_cmd; | |
67 | init_notification_thread_command(new_cmd); | |
68 | end: | |
69 | return new_cmd; | |
70 | } | |
71 | ||
28ab034a JG |
72 | static int run_command_no_wait(struct notification_thread_handle *handle, |
73 | const struct notification_thread_command *in_cmd) | |
0ab399e0 JG |
74 | { |
75 | int ret; | |
76 | uint64_t notification_counter = 1; | |
28ab034a | 77 | struct notification_thread_command *new_cmd = notification_thread_command_copy(in_cmd); |
0ab399e0 JG |
78 | |
79 | if (!new_cmd) { | |
80 | goto error; | |
81 | } | |
82 | new_cmd->is_async = true; | |
83 | ||
84 | pthread_mutex_lock(&handle->cmd_queue.lock); | |
85 | /* Add to queue. */ | |
28ab034a | 86 | cds_list_add_tail(&new_cmd->cmd_list_node, &handle->cmd_queue.list); |
0ab399e0 | 87 | /* Wake-up thread. */ |
28ab034a JG |
88 | ret = lttng_write( |
89 | handle->cmd_queue.event_fd, ¬ification_counter, sizeof(notification_counter)); | |
0ab399e0 JG |
90 | if (ret != sizeof(notification_counter)) { |
91 | PERROR("write to notification thread's queue event fd"); | |
92 | /* | |
93 | * Remove the command from the list so the notification | |
94 | * thread does not process it. | |
95 | */ | |
96 | cds_list_del(&new_cmd->cmd_list_node); | |
97 | goto error_unlock_queue; | |
98 | } | |
99 | pthread_mutex_unlock(&handle->cmd_queue.lock); | |
100 | return 0; | |
101 | error_unlock_queue: | |
102 | free(new_cmd); | |
103 | pthread_mutex_unlock(&handle->cmd_queue.lock); | |
104 | error: | |
105 | return -1; | |
106 | } | |
107 | ||
28ab034a JG |
108 | enum lttng_error_code |
109 | notification_thread_command_register_trigger(struct notification_thread_handle *handle, | |
110 | struct lttng_trigger *trigger, | |
111 | bool is_trigger_anonymous) | |
ab0ee2ca JG |
112 | { |
113 | int ret; | |
114 | enum lttng_error_code ret_code; | |
0ab399e0 | 115 | struct notification_thread_command cmd = {}; |
ab0ee2ca | 116 | |
a0377dfe | 117 | LTTNG_ASSERT(trigger); |
ab0ee2ca JG |
118 | init_notification_thread_command(&cmd); |
119 | ||
120 | cmd.type = NOTIFICATION_COMMAND_TYPE_REGISTER_TRIGGER; | |
242388e4 | 121 | lttng_trigger_get(trigger); |
ac16173e | 122 | cmd.parameters.register_trigger.trigger = trigger; |
28ab034a | 123 | cmd.parameters.register_trigger.is_trigger_anonymous = is_trigger_anonymous; |
ab0ee2ca JG |
124 | |
125 | ret = run_command_wait(handle, &cmd); | |
126 | if (ret) { | |
127 | ret_code = LTTNG_ERR_UNK; | |
128 | goto end; | |
129 | } | |
130 | ret_code = cmd.reply_code; | |
131 | end: | |
132 | return ret_code; | |
133 | } | |
134 | ||
28ab034a JG |
135 | enum lttng_error_code |
136 | notification_thread_command_unregister_trigger(struct notification_thread_handle *handle, | |
137 | const struct lttng_trigger *trigger) | |
ab0ee2ca JG |
138 | { |
139 | int ret; | |
140 | enum lttng_error_code ret_code; | |
0ab399e0 | 141 | struct notification_thread_command cmd = {}; |
ab0ee2ca JG |
142 | |
143 | init_notification_thread_command(&cmd); | |
144 | ||
145 | cmd.type = NOTIFICATION_COMMAND_TYPE_UNREGISTER_TRIGGER; | |
ac16173e | 146 | cmd.parameters.unregister_trigger.trigger = trigger; |
ab0ee2ca JG |
147 | |
148 | ret = run_command_wait(handle, &cmd); | |
149 | if (ret) { | |
150 | ret_code = LTTNG_ERR_UNK; | |
151 | goto end; | |
152 | } | |
153 | ret_code = cmd.reply_code; | |
154 | end: | |
155 | return ret_code; | |
156 | } | |
157 | ||
28ab034a JG |
158 | enum lttng_error_code |
159 | notification_thread_command_add_session(struct notification_thread_handle *handle, | |
160 | uint64_t session_id, | |
161 | const char *session_name, | |
162 | uid_t session_uid, | |
163 | gid_t session_gid) | |
139a8d25 JG |
164 | { |
165 | int ret; | |
166 | enum lttng_error_code ret_code; | |
167 | struct notification_thread_command cmd = {}; | |
168 | ||
169 | init_notification_thread_command(&cmd); | |
170 | ||
171 | cmd.type = NOTIFICATION_COMMAND_TYPE_ADD_SESSION; | |
172 | cmd.parameters.add_session.session_id = session_id; | |
173 | cmd.parameters.add_session.session_name = session_name; | |
174 | cmd.parameters.add_session.session_uid = session_uid; | |
175 | cmd.parameters.add_session.session_gid = session_gid; | |
176 | ||
177 | ret = run_command_wait(handle, &cmd); | |
178 | if (ret) { | |
179 | ret_code = LTTNG_ERR_UNK; | |
180 | goto end; | |
181 | } | |
182 | ret_code = cmd.reply_code; | |
183 | end: | |
184 | return ret_code; | |
185 | } | |
186 | ||
28ab034a JG |
187 | enum lttng_error_code |
188 | notification_thread_command_remove_session(struct notification_thread_handle *handle, | |
189 | uint64_t session_id) | |
139a8d25 JG |
190 | { |
191 | int ret; | |
192 | enum lttng_error_code ret_code; | |
193 | struct notification_thread_command cmd = {}; | |
194 | ||
195 | init_notification_thread_command(&cmd); | |
196 | ||
197 | cmd.type = NOTIFICATION_COMMAND_TYPE_REMOVE_SESSION; | |
198 | cmd.parameters.remove_session.session_id = session_id; | |
199 | ||
200 | ret = run_command_wait(handle, &cmd); | |
201 | if (ret) { | |
202 | ret_code = LTTNG_ERR_UNK; | |
203 | goto end; | |
204 | } | |
205 | ret_code = cmd.reply_code; | |
206 | end: | |
207 | return ret_code; | |
208 | } | |
209 | ||
28ab034a JG |
210 | enum lttng_error_code |
211 | notification_thread_command_add_channel(struct notification_thread_handle *handle, | |
212 | uint64_t session_id, | |
213 | char *channel_name, | |
214 | uint64_t key, | |
215 | enum lttng_domain_type domain, | |
216 | uint64_t capacity) | |
ab0ee2ca JG |
217 | { |
218 | int ret; | |
219 | enum lttng_error_code ret_code; | |
0ab399e0 | 220 | struct notification_thread_command cmd = {}; |
ab0ee2ca JG |
221 | |
222 | init_notification_thread_command(&cmd); | |
223 | ||
224 | cmd.type = NOTIFICATION_COMMAND_TYPE_ADD_CHANNEL; | |
139a8d25 | 225 | cmd.parameters.add_channel.session.id = session_id; |
8abe313a JG |
226 | cmd.parameters.add_channel.channel.name = channel_name; |
227 | cmd.parameters.add_channel.channel.key = key; | |
228 | cmd.parameters.add_channel.channel.domain = domain; | |
229 | cmd.parameters.add_channel.channel.capacity = capacity; | |
ab0ee2ca JG |
230 | |
231 | ret = run_command_wait(handle, &cmd); | |
232 | if (ret) { | |
233 | ret_code = LTTNG_ERR_UNK; | |
234 | goto end; | |
235 | } | |
236 | ret_code = cmd.reply_code; | |
237 | end: | |
238 | return ret_code; | |
239 | } | |
240 | ||
241 | enum lttng_error_code notification_thread_command_remove_channel( | |
28ab034a | 242 | struct notification_thread_handle *handle, uint64_t key, enum lttng_domain_type domain) |
ab0ee2ca JG |
243 | { |
244 | int ret; | |
245 | enum lttng_error_code ret_code; | |
0ab399e0 | 246 | struct notification_thread_command cmd = {}; |
ab0ee2ca JG |
247 | |
248 | init_notification_thread_command(&cmd); | |
249 | ||
250 | cmd.type = NOTIFICATION_COMMAND_TYPE_REMOVE_CHANNEL; | |
251 | cmd.parameters.remove_channel.key = key; | |
252 | cmd.parameters.remove_channel.domain = domain; | |
253 | ||
254 | ret = run_command_wait(handle, &cmd); | |
255 | if (ret) { | |
256 | ret_code = LTTNG_ERR_UNK; | |
257 | goto end; | |
258 | } | |
259 | ret_code = cmd.reply_code; | |
260 | end: | |
261 | return ret_code; | |
262 | } | |
263 | ||
28ab034a JG |
264 | enum lttng_error_code |
265 | notification_thread_command_session_rotation_ongoing(struct notification_thread_handle *handle, | |
266 | uint64_t session_id, | |
267 | uint64_t trace_archive_chunk_id) | |
731c1b12 JG |
268 | { |
269 | int ret; | |
270 | enum lttng_error_code ret_code; | |
0ab399e0 | 271 | struct notification_thread_command cmd = {}; |
731c1b12 JG |
272 | |
273 | init_notification_thread_command(&cmd); | |
274 | ||
275 | cmd.type = NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_ONGOING; | |
139a8d25 | 276 | cmd.parameters.session_rotation.session_id = session_id; |
28ab034a | 277 | cmd.parameters.session_rotation.trace_archive_chunk_id = trace_archive_chunk_id; |
731c1b12 JG |
278 | |
279 | ret = run_command_wait(handle, &cmd); | |
280 | if (ret) { | |
281 | ret_code = LTTNG_ERR_UNK; | |
282 | goto end; | |
283 | } | |
284 | ret_code = cmd.reply_code; | |
285 | end: | |
286 | return ret_code; | |
287 | } | |
288 | ||
289 | enum lttng_error_code notification_thread_command_session_rotation_completed( | |
28ab034a JG |
290 | struct notification_thread_handle *handle, |
291 | uint64_t session_id, | |
292 | uint64_t trace_archive_chunk_id, | |
293 | struct lttng_trace_archive_location *location) | |
731c1b12 JG |
294 | { |
295 | int ret; | |
296 | enum lttng_error_code ret_code; | |
0ab399e0 | 297 | struct notification_thread_command cmd = {}; |
731c1b12 JG |
298 | |
299 | init_notification_thread_command(&cmd); | |
300 | ||
301 | cmd.type = NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_COMPLETED; | |
139a8d25 | 302 | cmd.parameters.session_rotation.session_id = session_id; |
28ab034a | 303 | cmd.parameters.session_rotation.trace_archive_chunk_id = trace_archive_chunk_id; |
731c1b12 JG |
304 | cmd.parameters.session_rotation.location = location; |
305 | ||
306 | ret = run_command_wait(handle, &cmd); | |
307 | if (ret) { | |
308 | ret_code = LTTNG_ERR_UNK; | |
309 | goto end; | |
310 | } | |
311 | ret_code = cmd.reply_code; | |
312 | end: | |
313 | return ret_code; | |
314 | } | |
315 | ||
28ab034a JG |
316 | enum lttng_error_code |
317 | notification_thread_command_add_tracer_event_source(struct notification_thread_handle *handle, | |
318 | int tracer_event_source_fd, | |
319 | enum lttng_domain_type domain) | |
d02d7404 JR |
320 | { |
321 | int ret; | |
322 | enum lttng_error_code ret_code; | |
323 | struct notification_thread_command cmd = {}; | |
324 | ||
a0377dfe | 325 | LTTNG_ASSERT(tracer_event_source_fd >= 0); |
d02d7404 JR |
326 | |
327 | init_notification_thread_command(&cmd); | |
328 | ||
329 | cmd.type = NOTIFICATION_COMMAND_TYPE_ADD_TRACER_EVENT_SOURCE; | |
28ab034a | 330 | cmd.parameters.tracer_event_source.tracer_event_source_fd = tracer_event_source_fd; |
d02d7404 JR |
331 | cmd.parameters.tracer_event_source.domain = domain; |
332 | ||
333 | ret = run_command_wait(handle, &cmd); | |
334 | if (ret) { | |
335 | ret_code = LTTNG_ERR_UNK; | |
336 | goto end; | |
337 | } | |
338 | ||
339 | ret_code = cmd.reply_code; | |
340 | end: | |
341 | return ret_code; | |
342 | } | |
343 | ||
28ab034a JG |
344 | enum lttng_error_code |
345 | notification_thread_command_remove_tracer_event_source(struct notification_thread_handle *handle, | |
346 | int tracer_event_source_fd) | |
d02d7404 JR |
347 | { |
348 | int ret; | |
349 | enum lttng_error_code ret_code; | |
350 | struct notification_thread_command cmd = {}; | |
351 | ||
352 | init_notification_thread_command(&cmd); | |
353 | ||
354 | cmd.type = NOTIFICATION_COMMAND_TYPE_REMOVE_TRACER_EVENT_SOURCE; | |
28ab034a | 355 | cmd.parameters.tracer_event_source.tracer_event_source_fd = tracer_event_source_fd; |
d02d7404 JR |
356 | |
357 | ret = run_command_wait(handle, &cmd); | |
358 | if (ret) { | |
359 | ret_code = LTTNG_ERR_UNK; | |
360 | goto end; | |
361 | } | |
362 | ||
363 | ret_code = cmd.reply_code; | |
364 | end: | |
365 | return ret_code; | |
366 | } | |
367 | ||
fbc9f37d | 368 | enum lttng_error_code notification_thread_command_list_triggers( |
28ab034a | 369 | struct notification_thread_handle *handle, uid_t uid, struct lttng_triggers **triggers) |
fbc9f37d JR |
370 | { |
371 | int ret; | |
372 | enum lttng_error_code ret_code; | |
373 | struct notification_thread_command cmd = {}; | |
374 | ||
a0377dfe FD |
375 | LTTNG_ASSERT(handle); |
376 | LTTNG_ASSERT(triggers); | |
fbc9f37d JR |
377 | |
378 | init_notification_thread_command(&cmd); | |
379 | ||
380 | cmd.type = NOTIFICATION_COMMAND_TYPE_LIST_TRIGGERS; | |
381 | cmd.parameters.list_triggers.uid = uid; | |
382 | ||
383 | ret = run_command_wait(handle, &cmd); | |
384 | if (ret) { | |
385 | ret_code = LTTNG_ERR_UNK; | |
386 | goto end; | |
387 | } | |
388 | ||
389 | ret_code = cmd.reply_code; | |
390 | *triggers = cmd.reply.list_triggers.triggers; | |
391 | ||
392 | end: | |
393 | return ret_code; | |
394 | } | |
395 | ||
28ab034a | 396 | void notification_thread_command_quit(struct notification_thread_handle *handle) |
ab0ee2ca JG |
397 | { |
398 | int ret; | |
0ab399e0 | 399 | struct notification_thread_command cmd = {}; |
ab0ee2ca JG |
400 | |
401 | init_notification_thread_command(&cmd); | |
402 | ||
403 | cmd.type = NOTIFICATION_COMMAND_TYPE_QUIT; | |
404 | ret = run_command_wait(handle, &cmd); | |
a0377dfe | 405 | LTTNG_ASSERT(!ret && cmd.reply_code == LTTNG_OK); |
ab0ee2ca | 406 | } |
f2b3ef9f JG |
407 | |
408 | int notification_thread_client_communication_update( | |
28ab034a JG |
409 | struct notification_thread_handle *handle, |
410 | notification_client_id id, | |
411 | enum client_transmission_status transmission_status) | |
f2b3ef9f JG |
412 | { |
413 | struct notification_thread_command cmd = {}; | |
414 | ||
415 | init_notification_thread_command(&cmd); | |
416 | ||
417 | cmd.type = NOTIFICATION_COMMAND_TYPE_CLIENT_COMMUNICATION_UPDATE; | |
418 | cmd.parameters.client_communication_update.id = id; | |
419 | cmd.parameters.client_communication_update.status = transmission_status; | |
420 | return run_command_no_wait(handle, &cmd); | |
421 | } | |
b9a8d78f | 422 | |
28ab034a JG |
423 | enum lttng_error_code |
424 | notification_thread_command_get_trigger(struct notification_thread_handle *handle, | |
425 | const struct lttng_trigger *trigger, | |
426 | struct lttng_trigger **real_trigger) | |
8790759c FD |
427 | { |
428 | int ret; | |
429 | enum lttng_error_code ret_code; | |
430 | struct notification_thread_command cmd = {}; | |
431 | ||
432 | init_notification_thread_command(&cmd); | |
433 | ||
434 | cmd.type = NOTIFICATION_COMMAND_TYPE_GET_TRIGGER; | |
435 | cmd.parameters.get_trigger.trigger = trigger; | |
436 | ret = run_command_wait(handle, &cmd); | |
437 | if (ret) { | |
438 | ret_code = LTTNG_ERR_UNK; | |
439 | goto end; | |
440 | } | |
441 | ||
442 | ret_code = cmd.reply_code; | |
443 | *real_trigger = cmd.reply.get_trigger.trigger; | |
444 | ||
445 | end: | |
446 | return ret_code; | |
447 | } | |
448 | ||
82b3cbf4 JR |
449 | /* |
450 | * Takes ownership of the payload if present. | |
451 | */ | |
82b3cbf4 | 452 | struct lttng_event_notifier_notification *lttng_event_notifier_notification_create( |
28ab034a | 453 | uint64_t tracer_token, enum lttng_domain_type domain, char *payload, size_t payload_size) |
b9a8d78f | 454 | { |
cd9adb8b | 455 | struct lttng_event_notifier_notification *notification = nullptr; |
b9a8d78f | 456 | |
a0377dfe FD |
457 | LTTNG_ASSERT(domain != LTTNG_DOMAIN_NONE); |
458 | LTTNG_ASSERT((payload && payload_size) || (!payload && !payload_size)); | |
b9a8d78f | 459 | |
64803277 | 460 | notification = zmalloc<lttng_event_notifier_notification>(); |
cd9adb8b | 461 | if (notification == nullptr) { |
bd0514a5 | 462 | ERR("Error allocating notification"); |
b9a8d78f FD |
463 | goto end; |
464 | } | |
465 | ||
466 | notification->tracer_token = tracer_token; | |
467 | notification->type = domain; | |
82b3cbf4 JR |
468 | notification->capture_buffer = payload; |
469 | notification->capture_buf_size = payload_size; | |
b9a8d78f FD |
470 | |
471 | end: | |
472 | return notification; | |
473 | } | |
474 | ||
b9a8d78f | 475 | void lttng_event_notifier_notification_destroy( |
28ab034a | 476 | struct lttng_event_notifier_notification *notification) |
b9a8d78f FD |
477 | { |
478 | if (!notification) { | |
479 | return; | |
480 | } | |
481 | ||
82b3cbf4 | 482 | free(notification->capture_buffer); |
b9a8d78f FD |
483 | free(notification); |
484 | } |