Commit | Line | Data |
---|---|---|
54d01ffb DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * | |
d14d33bf AM |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License, version 2 only, | |
6 | * as published by the Free Software Foundation. | |
54d01ffb | 7 | * |
d14d33bf AM |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
54d01ffb | 12 | * |
d14d33bf AM |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
54d01ffb DG |
16 | */ |
17 | ||
be040666 | 18 | #define _GNU_SOURCE |
d87bfb32 | 19 | #include <errno.h> |
54d01ffb | 20 | #include <urcu/list.h> |
2bdd86d4 | 21 | #include <string.h> |
54d01ffb DG |
22 | |
23 | #include <lttng/lttng.h> | |
db758600 | 24 | #include <common/error.h> |
10a8a223 | 25 | #include <common/sessiond-comm/sessiond-comm.h> |
54d01ffb DG |
26 | |
27 | #include "channel.h" | |
28 | #include "event.h" | |
4771f025 | 29 | #include "kernel.h" |
9df8df5e | 30 | #include "ust-ctl.h" |
edb67388 DG |
31 | #include "ust-app.h" |
32 | #include "trace-kernel.h" | |
33 | #include "trace-ust.h" | |
54d01ffb | 34 | |
8c9ae521 DG |
35 | /* |
36 | * Setup a lttng_event used to enable *all* syscall tracing. | |
37 | */ | |
38 | static void init_syscalls_kernel_event(struct lttng_event *event) | |
39 | { | |
40 | event->name[0] = '\0'; | |
41 | /* | |
42 | * We use LTTNG_EVENT* here since the trace kernel creation will make the | |
43 | * right changes for the kernel. | |
44 | */ | |
45 | event->type = LTTNG_EVENT_SYSCALL; | |
46 | } | |
47 | ||
c0657016 MD |
48 | /* |
49 | * Return 1 if loglevels match or 0 on failure. | |
50 | */ | |
51 | static int loglevel_match(struct ltt_ust_event *uevent, | |
52 | enum lttng_ust_loglevel_type log_type, int loglevel) | |
53 | { | |
54 | if (uevent == NULL || uevent->attr.loglevel_type != log_type || | |
55 | uevent->attr.loglevel != loglevel) { | |
56 | goto no_match; | |
57 | } | |
58 | ||
59 | return 1; | |
60 | ||
61 | no_match: | |
62 | return 0; | |
63 | } | |
64 | ||
54d01ffb | 65 | /* |
7a3d1328 | 66 | * Disable kernel tracepoint event for a channel from the kernel session. |
54d01ffb | 67 | */ |
7a3d1328 | 68 | int event_kernel_disable_tracepoint(struct ltt_kernel_session *ksession, |
54d01ffb DG |
69 | struct ltt_kernel_channel *kchan, char *event_name) |
70 | { | |
71 | int ret; | |
72 | struct ltt_kernel_event *kevent; | |
73 | ||
74 | kevent = trace_kernel_get_event_by_name(event_name, kchan); | |
75 | if (kevent == NULL) { | |
76 | ret = LTTCOMM_NO_EVENT; | |
77 | goto error; | |
78 | } | |
79 | ||
80 | ret = kernel_disable_event(kevent); | |
81 | if (ret < 0) { | |
82 | ret = LTTCOMM_KERN_DISABLE_FAIL; | |
83 | goto error; | |
84 | } | |
85 | ||
86 | DBG("Kernel event %s disable for channel %s.", | |
87 | kevent->event->name, kchan->channel->name); | |
88 | ||
89 | ret = LTTCOMM_OK; | |
90 | ||
91 | error: | |
92 | return ret; | |
93 | } | |
94 | ||
95 | /* | |
7a3d1328 | 96 | * Disable kernel tracepoint events for a channel from the kernel session. |
54d01ffb | 97 | */ |
7a3d1328 | 98 | int event_kernel_disable_all_tracepoints(struct ltt_kernel_session *ksession, |
54d01ffb DG |
99 | struct ltt_kernel_channel *kchan) |
100 | { | |
101 | int ret; | |
102 | struct ltt_kernel_event *kevent; | |
103 | ||
104 | /* For each event in the kernel session */ | |
105 | cds_list_for_each_entry(kevent, &kchan->events_list.head, list) { | |
106 | ret = kernel_disable_event(kevent); | |
107 | if (ret < 0) { | |
108 | /* We continue disabling the rest */ | |
109 | continue; | |
110 | } | |
111 | } | |
54d01ffb | 112 | ret = LTTCOMM_OK; |
7a3d1328 MD |
113 | return ret; |
114 | } | |
115 | ||
116 | /* | |
117 | * Disable kernel syscall events for a channel from the kernel session. | |
118 | */ | |
119 | int event_kernel_disable_all_syscalls(struct ltt_kernel_session *ksession, | |
120 | struct ltt_kernel_channel *kchan) | |
121 | { | |
122 | ERR("Cannot disable syscall tracing for existing session. Please destroy session instead."); | |
123 | return LTTCOMM_OK; /* Return OK so disable all succeeds */ | |
124 | } | |
54d01ffb | 125 | |
7a3d1328 MD |
126 | /* |
127 | * Disable all kernel event for a channel from the kernel session. | |
128 | */ | |
129 | int event_kernel_disable_all(struct ltt_kernel_session *ksession, | |
130 | struct ltt_kernel_channel *kchan) | |
131 | { | |
132 | int ret; | |
133 | ||
134 | ret = event_kernel_disable_all_tracepoints(ksession, kchan); | |
135 | if (ret != LTTCOMM_OK) | |
136 | return ret; | |
137 | ret = event_kernel_disable_all_syscalls(ksession, kchan); | |
54d01ffb DG |
138 | return ret; |
139 | } | |
140 | ||
141 | /* | |
7a3d1328 | 142 | * Enable kernel tracepoint event for a channel from the kernel session. |
54d01ffb | 143 | */ |
7a3d1328 | 144 | int event_kernel_enable_tracepoint(struct ltt_kernel_session *ksession, |
54d01ffb DG |
145 | struct ltt_kernel_channel *kchan, struct lttng_event *event) |
146 | { | |
147 | int ret; | |
148 | struct ltt_kernel_event *kevent; | |
149 | ||
150 | kevent = trace_kernel_get_event_by_name(event->name, kchan); | |
151 | if (kevent == NULL) { | |
152 | ret = kernel_create_event(event, kchan); | |
153 | if (ret < 0) { | |
15d5a1ad DG |
154 | switch (-ret) { |
155 | case EEXIST: | |
d87bfb32 | 156 | ret = LTTCOMM_KERN_EVENT_EXIST; |
15d5a1ad DG |
157 | break; |
158 | case ENOSYS: | |
159 | ret = LTTCOMM_KERN_EVENT_ENOSYS; | |
160 | break; | |
161 | default: | |
d87bfb32 | 162 | ret = LTTCOMM_KERN_ENABLE_FAIL; |
15d5a1ad | 163 | break; |
d87bfb32 | 164 | } |
7a3d1328 | 165 | goto end; |
54d01ffb DG |
166 | } |
167 | } else if (kevent->enabled == 0) { | |
168 | ret = kernel_enable_event(kevent); | |
169 | if (ret < 0) { | |
170 | ret = LTTCOMM_KERN_ENABLE_FAIL; | |
7a3d1328 | 171 | goto end; |
54d01ffb | 172 | } |
42224349 DG |
173 | } else { |
174 | /* At this point, the event is considered enabled */ | |
175 | ret = LTTCOMM_KERN_EVENT_EXIST; | |
176 | goto end; | |
54d01ffb | 177 | } |
42224349 | 178 | |
54d01ffb | 179 | ret = LTTCOMM_OK; |
7a3d1328 | 180 | end: |
54d01ffb DG |
181 | return ret; |
182 | } | |
183 | ||
184 | /* | |
7a3d1328 | 185 | * Enable all kernel tracepoint events of a channel of the kernel session. |
54d01ffb | 186 | */ |
7a3d1328 | 187 | int event_kernel_enable_all_tracepoints(struct ltt_kernel_session *ksession, |
54d01ffb DG |
188 | struct ltt_kernel_channel *kchan, int kernel_tracer_fd) |
189 | { | |
190 | int size, i, ret; | |
191 | struct ltt_kernel_event *kevent; | |
8f69e5eb | 192 | struct lttng_event *event_list = NULL; |
54d01ffb DG |
193 | |
194 | /* For each event in the kernel session */ | |
195 | cds_list_for_each_entry(kevent, &kchan->events_list.head, list) { | |
8f69e5eb DG |
196 | if (kevent->enabled == 0) { |
197 | ret = kernel_enable_event(kevent); | |
198 | if (ret < 0) { | |
199 | /* Enable failed but still continue */ | |
200 | continue; | |
201 | } | |
54d01ffb DG |
202 | } |
203 | } | |
204 | ||
205 | size = kernel_list_events(kernel_tracer_fd, &event_list); | |
206 | if (size < 0) { | |
207 | ret = LTTCOMM_KERN_LIST_FAIL; | |
7a3d1328 | 208 | goto end; |
54d01ffb DG |
209 | } |
210 | ||
211 | for (i = 0; i < size; i++) { | |
212 | kevent = trace_kernel_get_event_by_name(event_list[i].name, kchan); | |
213 | if (kevent == NULL) { | |
214 | /* Default event type for enable all */ | |
215 | event_list[i].type = LTTNG_EVENT_TRACEPOINT; | |
216 | /* Enable each single tracepoint event */ | |
217 | ret = kernel_create_event(&event_list[i], kchan); | |
218 | if (ret < 0) { | |
219 | /* Ignore error here and continue */ | |
220 | } | |
221 | } | |
222 | } | |
54d01ffb | 223 | free(event_list); |
8f69e5eb | 224 | |
54d01ffb | 225 | ret = LTTCOMM_OK; |
7a3d1328 | 226 | end: |
54d01ffb | 227 | return ret; |
7a3d1328 | 228 | |
54d01ffb | 229 | } |
8c9ae521 DG |
230 | |
231 | /* | |
7a3d1328 | 232 | * Enable all kernel tracepoint events of a channel of the kernel session. |
8c9ae521 | 233 | */ |
7a3d1328 | 234 | int event_kernel_enable_all_syscalls(struct ltt_kernel_session *ksession, |
8c9ae521 DG |
235 | struct ltt_kernel_channel *kchan, int kernel_tracer_fd) |
236 | { | |
237 | int ret; | |
238 | struct lttng_event event; | |
239 | ||
240 | init_syscalls_kernel_event(&event); | |
241 | ||
242 | DBG("Enabling all syscall tracing"); | |
243 | ||
244 | ret = kernel_create_event(&event, kchan); | |
245 | if (ret < 0) { | |
8f69e5eb DG |
246 | if (ret == -EEXIST) { |
247 | ret = LTTCOMM_KERN_EVENT_EXIST; | |
248 | } else { | |
249 | ret = LTTCOMM_KERN_ENABLE_FAIL; | |
250 | } | |
7a3d1328 | 251 | goto end; |
8c9ae521 | 252 | } |
8f69e5eb | 253 | |
8c9ae521 | 254 | ret = LTTCOMM_OK; |
7a3d1328 MD |
255 | end: |
256 | return ret; | |
257 | } | |
8c9ae521 | 258 | |
7a3d1328 MD |
259 | /* |
260 | * Enable all kernel events of a channel of the kernel session. | |
261 | */ | |
262 | int event_kernel_enable_all(struct ltt_kernel_session *ksession, | |
263 | struct ltt_kernel_channel *kchan, int kernel_tracer_fd) | |
264 | { | |
92350f1c | 265 | int tp_ret; |
7a3d1328 | 266 | |
15d5a1ad DG |
267 | tp_ret = event_kernel_enable_all_tracepoints(ksession, kchan, kernel_tracer_fd); |
268 | if (tp_ret != LTTCOMM_OK) { | |
7a3d1328 MD |
269 | goto end; |
270 | } | |
15d5a1ad DG |
271 | |
272 | /* | |
273 | * Reaching this code path means that all tracepoints were enabled without | |
274 | * errors so we ignore the error value of syscalls. | |
275 | * | |
276 | * At the moment, failing to enable syscalls on "lttng enable-event -a -k" | |
277 | * is not considered an error that need to be returned to the client since | |
278 | * tracepoints did not fail. Future work will allow us to send back | |
279 | * multiple errors to the client in one API call. | |
280 | */ | |
92350f1c | 281 | (void) event_kernel_enable_all_syscalls(ksession, kchan, kernel_tracer_fd); |
15d5a1ad | 282 | |
7a3d1328 | 283 | end: |
15d5a1ad | 284 | return tp_ret; |
8c9ae521 | 285 | } |
2bdd86d4 | 286 | |
7f79d3a1 DG |
287 | /* |
288 | * ============================ | |
289 | * UST : The Ultimate Frontier! | |
290 | * ============================ | |
291 | */ | |
292 | ||
76d45b40 DG |
293 | /* |
294 | * Enable all UST tracepoints for a channel from a UST session. | |
295 | */ | |
296 | int event_ust_enable_all_tracepoints(struct ltt_ust_session *usess, int domain, | |
297 | struct ltt_ust_channel *uchan) | |
298 | { | |
9fbaebcf | 299 | int ret, i, size; |
bec39940 | 300 | struct lttng_ht_iter iter; |
76d45b40 | 301 | struct ltt_ust_event *uevent = NULL; |
7f79d3a1 | 302 | struct lttng_event *events = NULL; |
76d45b40 DG |
303 | |
304 | switch (domain) { | |
305 | case LTTNG_DOMAIN_UST: | |
306 | { | |
307 | /* Enable existing events */ | |
bec39940 DG |
308 | cds_lfht_for_each_entry(uchan->events->ht, &iter.iter, uevent, |
309 | node.node) { | |
76d45b40 DG |
310 | if (uevent->enabled == 0) { |
311 | ret = ust_app_enable_event_glb(usess, uchan, uevent); | |
312 | if (ret < 0) { | |
313 | continue; | |
314 | } | |
315 | uevent->enabled = 1; | |
316 | } | |
317 | } | |
318 | ||
319 | /* Get all UST available events */ | |
320 | size = ust_app_list_events(&events); | |
321 | if (size < 0) { | |
322 | ret = LTTCOMM_UST_LIST_FAIL; | |
323 | goto error; | |
324 | } | |
325 | ||
326 | for (i = 0; i < size; i++) { | |
327 | /* | |
328 | * Check if event exist and if so, continue since it was enable | |
329 | * previously. | |
330 | */ | |
331 | uevent = trace_ust_find_event_by_name(uchan->events, | |
332 | events[i].name); | |
333 | if (uevent != NULL) { | |
334 | ret = ust_app_enable_event_pid(usess, uchan, uevent, | |
335 | events[i].pid); | |
336 | if (ret < 0) { | |
337 | if (ret != -EEXIST) { | |
338 | ret = LTTCOMM_UST_ENABLE_FAIL; | |
339 | goto error; | |
340 | } | |
341 | } | |
342 | continue; | |
343 | } | |
344 | ||
345 | /* Create ust event */ | |
346 | uevent = trace_ust_create_event(&events[i]); | |
347 | if (uevent == NULL) { | |
348 | ret = LTTCOMM_FATAL; | |
7f79d3a1 | 349 | goto error_destroy; |
76d45b40 DG |
350 | } |
351 | ||
352 | /* Create event for the specific PID */ | |
353 | ret = ust_app_enable_event_pid(usess, uchan, uevent, | |
354 | events[i].pid); | |
355 | if (ret < 0) { | |
356 | if (ret == -EEXIST) { | |
357 | ret = LTTCOMM_UST_EVENT_EXIST; | |
7f79d3a1 | 358 | goto error; |
76d45b40 DG |
359 | } else { |
360 | ret = LTTCOMM_UST_ENABLE_FAIL; | |
7f79d3a1 | 361 | goto error_destroy; |
76d45b40 | 362 | } |
76d45b40 DG |
363 | } |
364 | ||
365 | uevent->enabled = 1; | |
366 | /* Add ltt ust event to channel */ | |
367 | rcu_read_lock(); | |
bec39940 | 368 | lttng_ht_add_unique_str(uchan->events, &uevent->node); |
76d45b40 DG |
369 | rcu_read_unlock(); |
370 | } | |
371 | ||
372 | free(events); | |
373 | break; | |
374 | } | |
d78d6610 | 375 | #if 0 |
76d45b40 DG |
376 | case LTTNG_DOMAIN_UST_EXEC_NAME: |
377 | case LTTNG_DOMAIN_UST_PID: | |
378 | case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN: | |
d78d6610 | 379 | #endif |
76d45b40 | 380 | default: |
1ab1ea0b | 381 | ret = LTTCOMM_UND; |
76d45b40 DG |
382 | goto error; |
383 | } | |
384 | ||
385 | return LTTCOMM_OK; | |
386 | ||
7f79d3a1 | 387 | error_destroy: |
76d45b40 | 388 | trace_ust_destroy_event(uevent); |
7f79d3a1 DG |
389 | |
390 | error: | |
391 | free(events); | |
76d45b40 DG |
392 | return ret; |
393 | } | |
394 | ||
2bdd86d4 MD |
395 | /* |
396 | * Enable UST tracepoint event for a channel from a UST session. | |
397 | */ | |
edb67388 DG |
398 | int event_ust_enable_tracepoint(struct ltt_ust_session *usess, int domain, |
399 | struct ltt_ust_channel *uchan, struct lttng_event *event) | |
2bdd86d4 | 400 | { |
fc34caaa | 401 | int ret = LTTCOMM_OK, to_create = 0; |
edb67388 DG |
402 | struct ltt_ust_event *uevent; |
403 | ||
404 | uevent = trace_ust_find_event_by_name(uchan->events, event->name); | |
405 | if (uevent == NULL) { | |
406 | uevent = trace_ust_create_event(event); | |
407 | if (uevent == NULL) { | |
408 | ret = LTTCOMM_FATAL; | |
409 | goto error; | |
410 | } | |
fc34caaa | 411 | /* Valid to set it after the goto error since uevent is still NULL */ |
edb67388 DG |
412 | to_create = 1; |
413 | } | |
2bdd86d4 | 414 | |
c0657016 MD |
415 | /* Check loglevels */ |
416 | ret = loglevel_match(uevent, event->loglevel_type, event->loglevel); | |
417 | if (ret == 0) { | |
418 | /* | |
419 | * No match meaning that the user tried to enable a known event but | |
420 | * with a different loglevel. | |
421 | */ | |
422 | DBG("Enable event %s does not match existing event %s with loglevel " | |
423 | "respectively of %d and %d", event->name, uevent->attr.name, | |
424 | uevent->attr.loglevel, event->loglevel); | |
425 | ret = LTTCOMM_EVENT_EXIST_LOGLEVEL; | |
426 | goto error; | |
427 | } | |
428 | ||
7f79d3a1 DG |
429 | if (uevent->enabled) { |
430 | /* It's already enabled so everything is OK */ | |
c0657016 | 431 | ret = LTTCOMM_OK; |
7f79d3a1 DG |
432 | goto end; |
433 | } | |
434 | ||
fc34caaa DG |
435 | uevent->enabled = 1; |
436 | ||
edb67388 DG |
437 | switch (domain) { |
438 | case LTTNG_DOMAIN_UST: | |
439 | { | |
440 | if (to_create) { | |
441 | /* Create event on all UST registered apps for session */ | |
35a9059d | 442 | ret = ust_app_create_event_glb(usess, uchan, uevent); |
edb67388 DG |
443 | } else { |
444 | /* Enable event on all UST registered apps for session */ | |
35a9059d | 445 | ret = ust_app_enable_event_glb(usess, uchan, uevent); |
edb67388 | 446 | } |
48842b30 | 447 | |
edb67388 DG |
448 | if (ret < 0) { |
449 | if (ret == -EEXIST) { | |
450 | ret = LTTCOMM_UST_EVENT_EXIST; | |
7f79d3a1 | 451 | goto end; |
edb67388 DG |
452 | } else { |
453 | ret = LTTCOMM_UST_ENABLE_FAIL; | |
7f79d3a1 | 454 | goto error; |
edb67388 | 455 | } |
edb67388 | 456 | } |
edb67388 DG |
457 | break; |
458 | } | |
d78d6610 | 459 | #if 0 |
edb67388 DG |
460 | case LTTNG_DOMAIN_UST_EXEC_NAME: |
461 | case LTTNG_DOMAIN_UST_PID: | |
462 | case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN: | |
d78d6610 | 463 | #endif |
edb67388 | 464 | default: |
1ab1ea0b | 465 | ret = LTTCOMM_UND; |
7f79d3a1 | 466 | goto end; |
2bdd86d4 | 467 | } |
48842b30 | 468 | |
7f79d3a1 DG |
469 | if (to_create) { |
470 | rcu_read_lock(); | |
fc34caaa | 471 | /* Add ltt ust event to channel */ |
bec39940 | 472 | lttng_ht_add_unique_str(uchan->events, &uevent->node); |
7f79d3a1 DG |
473 | rcu_read_unlock(); |
474 | } | |
edb67388 | 475 | |
7f79d3a1 DG |
476 | DBG("Event UST %s %s in channel %s", uevent->attr.name, |
477 | to_create ? "created" : "enabled", uchan->name); | |
478 | ||
fc34caaa DG |
479 | ret = LTTCOMM_OK; |
480 | ||
fb89d070 | 481 | end: |
fc34caaa | 482 | return ret; |
edb67388 DG |
483 | |
484 | error: | |
fc34caaa DG |
485 | /* |
486 | * Only destroy event on creation time (not enabling time) because if the | |
487 | * event is found in the channel (to_create == 0), it means that at some | |
488 | * point the enable_event worked and it's thus valid to keep it alive. | |
489 | * Destroying it also implies that we also destroy it's shadow copy to sync | |
490 | * everyone up. | |
491 | */ | |
492 | if (to_create) { | |
493 | /* In this code path, the uevent was not added to the hash table */ | |
494 | trace_ust_destroy_event(uevent); | |
495 | } | |
2bdd86d4 MD |
496 | return ret; |
497 | } | |
498 | ||
7f79d3a1 DG |
499 | /* |
500 | * Disable UST tracepoint of a channel from a UST session. | |
501 | */ | |
502 | int event_ust_disable_tracepoint(struct ltt_ust_session *usess, int domain, | |
503 | struct ltt_ust_channel *uchan, char *event_name) | |
2bdd86d4 MD |
504 | { |
505 | int ret; | |
7f79d3a1 | 506 | struct ltt_ust_event *uevent; |
2bdd86d4 | 507 | |
7f79d3a1 DG |
508 | uevent = trace_ust_find_event_by_name(uchan->events, event_name); |
509 | if (uevent == NULL) { | |
510 | ret = LTTCOMM_UST_EVENT_NOT_FOUND; | |
511 | goto error; | |
2bdd86d4 | 512 | } |
7f79d3a1 DG |
513 | |
514 | if (uevent->enabled == 0) { | |
515 | /* It's already enabled so everything is OK */ | |
516 | ret = LTTCOMM_OK; | |
2bdd86d4 MD |
517 | goto end; |
518 | } | |
7f79d3a1 DG |
519 | |
520 | switch (domain) { | |
521 | case LTTNG_DOMAIN_UST: | |
522 | ret = ust_app_disable_event_glb(usess, uchan, uevent); | |
523 | if (ret < 0 && ret != -EEXIST) { | |
524 | ret = LTTCOMM_UST_DISABLE_FAIL; | |
525 | goto error; | |
526 | } | |
527 | break; | |
d78d6610 | 528 | #if 0 |
7f79d3a1 DG |
529 | case LTTNG_DOMAIN_UST_EXEC_NAME: |
530 | case LTTNG_DOMAIN_UST_PID: | |
531 | case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN: | |
d78d6610 | 532 | #endif |
7f79d3a1 | 533 | default: |
1ab1ea0b | 534 | ret = LTTCOMM_UND; |
7f79d3a1 DG |
535 | goto error; |
536 | } | |
537 | ||
538 | uevent->enabled = 0; | |
2bdd86d4 | 539 | ret = LTTCOMM_OK; |
7f79d3a1 | 540 | |
2bdd86d4 | 541 | end: |
7f79d3a1 DG |
542 | DBG2("Event UST %s disabled in channel %s", uevent->attr.name, |
543 | uchan->name); | |
544 | ||
545 | error: | |
546 | return ret; | |
547 | } | |
548 | ||
549 | /* | |
550 | * Disable all UST tracepoints for a channel from a UST session. | |
551 | */ | |
552 | int event_ust_disable_all_tracepoints(struct ltt_ust_session *usess, int domain, | |
553 | struct ltt_ust_channel *uchan) | |
554 | { | |
9fbaebcf | 555 | int ret, i, size; |
bec39940 | 556 | struct lttng_ht_iter iter; |
7f79d3a1 DG |
557 | struct ltt_ust_event *uevent = NULL; |
558 | struct lttng_event *events = NULL; | |
559 | ||
560 | switch (domain) { | |
561 | case LTTNG_DOMAIN_UST: | |
562 | { | |
563 | /* Disabling existing events */ | |
bec39940 DG |
564 | cds_lfht_for_each_entry(uchan->events->ht, &iter.iter, uevent, |
565 | node.node) { | |
7f79d3a1 DG |
566 | if (uevent->enabled == 1) { |
567 | ret = ust_app_disable_event_glb(usess, uchan, uevent); | |
568 | if (ret < 0) { | |
569 | continue; | |
570 | } | |
571 | uevent->enabled = 0; | |
572 | } | |
573 | } | |
574 | ||
575 | /* Get all UST available events */ | |
576 | size = ust_app_list_events(&events); | |
577 | if (size < 0) { | |
578 | ret = LTTCOMM_UST_LIST_FAIL; | |
579 | goto error; | |
580 | } | |
581 | ||
582 | for (i = 0; i < size; i++) { | |
583 | uevent = trace_ust_find_event_by_name(uchan->events, | |
584 | events[i].name); | |
585 | if (uevent != NULL && uevent->enabled == 1) { | |
586 | ret = ust_app_disable_event_pid(usess, uchan, uevent, | |
587 | events[i].pid); | |
588 | if (ret < 0 && ret != -EEXIST) { | |
589 | ret = LTTCOMM_UST_DISABLE_FAIL; | |
590 | goto error; | |
591 | } | |
592 | uevent->enabled = 0; | |
593 | continue; | |
594 | } | |
595 | } | |
596 | ||
597 | free(events); | |
598 | break; | |
599 | } | |
d78d6610 | 600 | #if 0 |
7f79d3a1 DG |
601 | case LTTNG_DOMAIN_UST_EXEC_NAME: |
602 | case LTTNG_DOMAIN_UST_PID: | |
603 | case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN: | |
d78d6610 | 604 | #endif |
7f79d3a1 | 605 | default: |
1ab1ea0b | 606 | ret = LTTCOMM_UND; |
7f79d3a1 DG |
607 | goto error; |
608 | } | |
609 | ||
610 | return LTTCOMM_OK; | |
611 | ||
612 | error: | |
613 | free(events); | |
2bdd86d4 MD |
614 | return ret; |
615 | } |