Commit | Line | Data |
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f4681817 MD |
1 | /* |
2 | * lttng-ust-abi.c | |
3 | * | |
f4681817 MD |
4 | * LTTng UST ABI |
5 | * | |
e92f3e28 MD |
6 | * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
7 | * | |
8 | * This library is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License as published by the Free Software Foundation; only | |
11 | * version 2.1 of the License. | |
12 | * | |
13 | * This library is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * Lesser General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public | |
19 | * License along with this library; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | * | |
22 | * | |
f4681817 MD |
23 | * Mimic system calls for: |
24 | * - session creation, returns an object descriptor or failure. | |
25 | * - channel creation, returns an object descriptor or failure. | |
26 | * - Operates on a session object descriptor | |
27 | * - Takes all channel options as parameters. | |
28 | * - stream get, returns an object descriptor or failure. | |
29 | * - Operates on a channel object descriptor. | |
30 | * - stream notifier get, returns an object descriptor or failure. | |
31 | * - Operates on a channel object descriptor. | |
32 | * - event creation, returns an object descriptor or failure. | |
33 | * - Operates on a channel object descriptor | |
34 | * - Takes an event name as parameter | |
35 | * - Takes an instrumentation source as parameter | |
36 | * - e.g. tracepoints, dynamic_probes... | |
37 | * - Takes instrumentation source specific arguments. | |
f4681817 MD |
38 | */ |
39 | ||
4318ae1b | 40 | #include <lttng/ust-abi.h> |
7bc53e94 | 41 | #include <lttng/ust-error.h> |
f4681817 MD |
42 | #include <urcu/compiler.h> |
43 | #include <urcu/list.h> | |
4318ae1b | 44 | #include <lttng/ust-events.h> |
23c8854a | 45 | #include <lttng/ust-version.h> |
902e1379 | 46 | #include <lttng/tracepoint.h> |
d8de1354 | 47 | #include "tracepoint-internal.h" |
44c72f10 MD |
48 | #include <usterr-signal-safe.h> |
49 | #include <helper.h> | |
f4681817 | 50 | #include "ltt-tracer.h" |
4ab44fbe | 51 | |
45e9e699 MD |
52 | static int lttng_ust_abi_close_in_progress; |
53 | ||
51489cad MD |
54 | static |
55 | int lttng_abi_tracepoint_list(void); | |
06d4f27e MD |
56 | static |
57 | int lttng_abi_tracepoint_field_list(void); | |
51489cad | 58 | |
f4681817 MD |
59 | /* |
60 | * Object descriptor table. Should be protected from concurrent access | |
61 | * by the caller. | |
62 | */ | |
63 | ||
b61ce3b2 | 64 | struct lttng_ust_obj { |
f4681817 MD |
65 | union { |
66 | struct { | |
67 | void *private_data; | |
b61ce3b2 | 68 | const struct lttng_ust_objd_ops *ops; |
f4681817 MD |
69 | int f_count; |
70 | } s; | |
71 | int freelist_next; /* offset freelist. end is -1. */ | |
72 | } u; | |
73 | }; | |
74 | ||
b61ce3b2 MD |
75 | struct lttng_ust_objd_table { |
76 | struct lttng_ust_obj *array; | |
f4681817 MD |
77 | unsigned int len, allocated_len; |
78 | int freelist_head; /* offset freelist head. end is -1 */ | |
79 | }; | |
80 | ||
b61ce3b2 | 81 | static struct lttng_ust_objd_table objd_table = { |
f4681817 MD |
82 | .freelist_head = -1, |
83 | }; | |
84 | ||
85 | static | |
b61ce3b2 | 86 | int objd_alloc(void *private_data, const struct lttng_ust_objd_ops *ops) |
f4681817 | 87 | { |
b61ce3b2 | 88 | struct lttng_ust_obj *obj; |
f4681817 MD |
89 | |
90 | if (objd_table.freelist_head != -1) { | |
91 | obj = &objd_table.array[objd_table.freelist_head]; | |
92 | objd_table.freelist_head = obj->u.freelist_next; | |
93 | goto end; | |
94 | } | |
95 | ||
96 | if (objd_table.len >= objd_table.allocated_len) { | |
97 | unsigned int new_allocated_len, old_allocated_len; | |
b61ce3b2 | 98 | struct lttng_ust_obj *new_table, *old_table; |
f4681817 MD |
99 | |
100 | old_allocated_len = objd_table.allocated_len; | |
101 | old_table = objd_table.array; | |
102 | if (!old_allocated_len) | |
103 | new_allocated_len = 1; | |
104 | else | |
105 | new_allocated_len = old_allocated_len << 1; | |
b61ce3b2 | 106 | new_table = zmalloc(sizeof(struct lttng_ust_obj) * new_allocated_len); |
f4681817 MD |
107 | if (!new_table) |
108 | return -ENOMEM; | |
109 | memcpy(new_table, old_table, | |
b61ce3b2 | 110 | sizeof(struct lttng_ust_obj) * old_allocated_len); |
f4681817 MD |
111 | free(old_table); |
112 | objd_table.array = new_table; | |
113 | objd_table.allocated_len = new_allocated_len; | |
114 | } | |
115 | obj = &objd_table.array[objd_table.len]; | |
116 | objd_table.len++; | |
117 | end: | |
118 | obj->u.s.private_data = private_data; | |
119 | obj->u.s.ops = ops; | |
a4be8962 MD |
120 | obj->u.s.f_count = 2; /* count == 1 : object is allocated */ |
121 | /* count == 2 : allocated + hold ref */ | |
f4681817 MD |
122 | return obj - objd_table.array; |
123 | } | |
124 | ||
125 | static | |
b61ce3b2 | 126 | struct lttng_ust_obj *_objd_get(int id) |
f4681817 MD |
127 | { |
128 | if (id >= objd_table.len) | |
129 | return NULL; | |
a4be8962 MD |
130 | if (!objd_table.array[id].u.s.f_count) |
131 | return NULL; | |
f4681817 MD |
132 | return &objd_table.array[id]; |
133 | } | |
134 | ||
135 | static | |
136 | void *objd_private(int id) | |
137 | { | |
b61ce3b2 | 138 | struct lttng_ust_obj *obj = _objd_get(id); |
f4681817 MD |
139 | assert(obj); |
140 | return obj->u.s.private_data; | |
141 | } | |
142 | ||
143 | static | |
144 | void objd_set_private(int id, void *private_data) | |
145 | { | |
b61ce3b2 | 146 | struct lttng_ust_obj *obj = _objd_get(id); |
f4681817 MD |
147 | assert(obj); |
148 | obj->u.s.private_data = private_data; | |
149 | } | |
150 | ||
b61ce3b2 | 151 | const struct lttng_ust_objd_ops *objd_ops(int id) |
f4681817 | 152 | { |
b61ce3b2 | 153 | struct lttng_ust_obj *obj = _objd_get(id); |
46050b1a | 154 | |
a4be8962 MD |
155 | if (!obj) |
156 | return NULL; | |
f4681817 MD |
157 | return obj->u.s.ops; |
158 | } | |
159 | ||
160 | static | |
161 | void objd_free(int id) | |
162 | { | |
b61ce3b2 | 163 | struct lttng_ust_obj *obj = _objd_get(id); |
f4681817 MD |
164 | |
165 | assert(obj); | |
166 | obj->u.freelist_next = objd_table.freelist_head; | |
167 | objd_table.freelist_head = obj - objd_table.array; | |
a4be8962 MD |
168 | assert(obj->u.s.f_count == 1); |
169 | obj->u.s.f_count = 0; /* deallocated */ | |
f4681817 MD |
170 | } |
171 | ||
172 | static | |
173 | void objd_ref(int id) | |
174 | { | |
b61ce3b2 | 175 | struct lttng_ust_obj *obj = _objd_get(id); |
f4681817 MD |
176 | obj->u.s.f_count++; |
177 | } | |
178 | ||
d4419b81 | 179 | int lttng_ust_objd_unref(int id) |
f4681817 | 180 | { |
b61ce3b2 | 181 | struct lttng_ust_obj *obj = _objd_get(id); |
f4681817 | 182 | |
1ea11eab MD |
183 | if (!obj) |
184 | return -EINVAL; | |
a4be8962 MD |
185 | if (obj->u.s.f_count == 1) { |
186 | ERR("Reference counting error\n"); | |
187 | return -EINVAL; | |
188 | } | |
189 | if ((--obj->u.s.f_count) == 1) { | |
b61ce3b2 | 190 | const struct lttng_ust_objd_ops *ops = objd_ops(id); |
a4be8962 | 191 | |
f4681817 MD |
192 | if (ops->release) |
193 | ops->release(id); | |
194 | objd_free(id); | |
195 | } | |
1ea11eab | 196 | return 0; |
f4681817 MD |
197 | } |
198 | ||
199 | static | |
200 | void objd_table_destroy(void) | |
201 | { | |
a4be8962 MD |
202 | int i; |
203 | ||
fb50c39d | 204 | for (i = 0; i < objd_table.allocated_len; i++) |
d4419b81 | 205 | (void) lttng_ust_objd_unref(i); |
f4681817 | 206 | free(objd_table.array); |
02fb3381 MD |
207 | objd_table.array = NULL; |
208 | objd_table.len = 0; | |
209 | objd_table.allocated_len = 0; | |
17dfb34b | 210 | objd_table.freelist_head = -1; |
f4681817 MD |
211 | } |
212 | ||
213 | /* | |
214 | * This is LTTng's own personal way to create an ABI for sessiond. | |
215 | * We send commands over a socket. | |
216 | */ | |
217 | ||
b61ce3b2 MD |
218 | static const struct lttng_ust_objd_ops lttng_ops; |
219 | static const struct lttng_ust_objd_ops lttng_session_ops; | |
220 | static const struct lttng_ust_objd_ops lttng_channel_ops; | |
221 | static const struct lttng_ust_objd_ops lttng_metadata_ops; | |
222 | static const struct lttng_ust_objd_ops lttng_event_ops; | |
e6c12e3d | 223 | static const struct lttng_ust_objd_ops lttng_wildcard_ops; |
b61ce3b2 | 224 | static const struct lttng_ust_objd_ops lib_ring_buffer_objd_ops; |
51489cad | 225 | static const struct lttng_ust_objd_ops lttng_tracepoint_list_ops; |
06d4f27e | 226 | static const struct lttng_ust_objd_ops lttng_tracepoint_field_list_ops; |
f4681817 MD |
227 | |
228 | enum channel_type { | |
229 | PER_CPU_CHANNEL, | |
230 | METADATA_CHANNEL, | |
231 | }; | |
232 | ||
46050b1a MD |
233 | int lttng_abi_create_root_handle(void) |
234 | { | |
235 | int root_handle; | |
236 | ||
237 | root_handle = objd_alloc(NULL, <tng_ops); | |
46050b1a MD |
238 | return root_handle; |
239 | } | |
240 | ||
818173b9 | 241 | static |
f4681817 MD |
242 | int lttng_abi_create_session(void) |
243 | { | |
244 | struct ltt_session *session; | |
245 | int session_objd, ret; | |
246 | ||
247 | session = ltt_session_create(); | |
248 | if (!session) | |
249 | return -ENOMEM; | |
250 | session_objd = objd_alloc(session, <tng_session_ops); | |
251 | if (session_objd < 0) { | |
252 | ret = session_objd; | |
253 | goto objd_error; | |
254 | } | |
255 | session->objd = session_objd; | |
256 | return session_objd; | |
257 | ||
258 | objd_error: | |
259 | ltt_session_destroy(session); | |
260 | return ret; | |
261 | } | |
262 | ||
f4681817 MD |
263 | static |
264 | long lttng_abi_tracer_version(int objd, | |
265 | struct lttng_ust_tracer_version *v) | |
266 | { | |
0f4eaec3 MD |
267 | v->major = LTTNG_UST_INTERNAL_MAJOR_VERSION; |
268 | v->minor = LTTNG_UST_INTERNAL_MINOR_VERSION; | |
269 | v->patchlevel = LTTNG_UST_INTERNAL_PATCHLEVEL_VERSION; | |
f4681817 MD |
270 | return 0; |
271 | } | |
272 | ||
273 | static | |
274 | long lttng_abi_add_context(int objd, | |
275 | struct lttng_ust_context *context_param, | |
276 | struct lttng_ctx **ctx, struct ltt_session *session) | |
277 | { | |
278 | if (session->been_active) | |
279 | return -EPERM; | |
280 | ||
281 | switch (context_param->ctx) { | |
8de38cf7 MD |
282 | case LTTNG_UST_CONTEXT_PTHREAD_ID: |
283 | return lttng_add_pthread_id_to_ctx(ctx); | |
3b402b40 MD |
284 | case LTTNG_UST_CONTEXT_VTID: |
285 | return lttng_add_vtid_to_ctx(ctx); | |
c1ef86f0 MD |
286 | case LTTNG_UST_CONTEXT_VPID: |
287 | return lttng_add_vpid_to_ctx(ctx); | |
4847e9bb MD |
288 | case LTTNG_UST_CONTEXT_PROCNAME: |
289 | return lttng_add_procname_to_ctx(ctx); | |
f4681817 MD |
290 | default: |
291 | return -EINVAL; | |
292 | } | |
293 | } | |
294 | ||
295 | /** | |
296 | * lttng_cmd - lttng control through socket commands | |
297 | * | |
298 | * @objd: the object descriptor | |
299 | * @cmd: the command | |
300 | * @arg: command arg | |
ef9ff354 | 301 | * @uargs: UST arguments (internal) |
f4681817 MD |
302 | * |
303 | * This descriptor implements lttng commands: | |
304 | * LTTNG_UST_SESSION | |
305 | * Returns a LTTng trace session object descriptor | |
306 | * LTTNG_UST_TRACER_VERSION | |
307 | * Returns the LTTng kernel tracer version | |
308 | * LTTNG_UST_TRACEPOINT_LIST | |
309 | * Returns a file descriptor listing available tracepoints | |
06d4f27e MD |
310 | * LTTNG_UST_TRACEPOINT_FIELD_LIST |
311 | * Returns a file descriptor listing available tracepoint fields | |
f4681817 MD |
312 | * LTTNG_UST_WAIT_QUIESCENT |
313 | * Returns after all previously running probes have completed | |
314 | * | |
315 | * The returned session will be deleted when its file descriptor is closed. | |
316 | */ | |
317 | static | |
ef9ff354 MD |
318 | long lttng_cmd(int objd, unsigned int cmd, unsigned long arg, |
319 | union ust_args *uargs) | |
f4681817 MD |
320 | { |
321 | switch (cmd) { | |
322 | case LTTNG_UST_SESSION: | |
323 | return lttng_abi_create_session(); | |
324 | case LTTNG_UST_TRACER_VERSION: | |
325 | return lttng_abi_tracer_version(objd, | |
326 | (struct lttng_ust_tracer_version *) arg); | |
327 | case LTTNG_UST_TRACEPOINT_LIST: | |
51489cad | 328 | return lttng_abi_tracepoint_list(); |
06d4f27e MD |
329 | case LTTNG_UST_TRACEPOINT_FIELD_LIST: |
330 | return lttng_abi_tracepoint_field_list(); | |
f4681817 MD |
331 | case LTTNG_UST_WAIT_QUIESCENT: |
332 | synchronize_trace(); | |
333 | return 0; | |
334 | default: | |
335 | return -EINVAL; | |
336 | } | |
337 | } | |
338 | ||
b61ce3b2 | 339 | static const struct lttng_ust_objd_ops lttng_ops = { |
f4681817 MD |
340 | .cmd = lttng_cmd, |
341 | }; | |
342 | ||
343 | /* | |
344 | * We tolerate no failure in this function (if one happens, we print a dmesg | |
345 | * error, but cannot return any error, because the channel information is | |
346 | * invariant. | |
347 | */ | |
348 | static | |
349 | void lttng_metadata_create_events(int channel_objd) | |
350 | { | |
351 | struct ltt_channel *channel = objd_private(channel_objd); | |
352 | static struct lttng_ust_event metadata_params = { | |
353 | .instrumentation = LTTNG_UST_TRACEPOINT, | |
a4ada9b8 | 354 | .name = "lttng_ust:metadata", |
457a6b58 MD |
355 | .loglevel_type = LTTNG_UST_LOGLEVEL_ALL, |
356 | .loglevel = TRACE_DEFAULT, | |
f4681817 MD |
357 | }; |
358 | struct ltt_event *event; | |
576599a0 | 359 | int ret; |
f4681817 MD |
360 | |
361 | /* | |
362 | * We tolerate no failure path after event creation. It will stay | |
363 | * invariant for the rest of the session. | |
364 | */ | |
2d78951a | 365 | ret = ltt_event_create(channel, &metadata_params, &event); |
576599a0 | 366 | if (ret < 0) { |
f4681817 MD |
367 | goto create_error; |
368 | } | |
369 | return; | |
370 | ||
371 | create_error: | |
372 | WARN_ON(1); | |
373 | return; /* not allowed to return error */ | |
374 | } | |
375 | ||
f4681817 MD |
376 | int lttng_abi_create_channel(int session_objd, |
377 | struct lttng_ust_channel *chan_param, | |
ef9ff354 MD |
378 | enum channel_type channel_type, |
379 | union ust_args *uargs) | |
f4681817 MD |
380 | { |
381 | struct ltt_session *session = objd_private(session_objd); | |
b61ce3b2 | 382 | const struct lttng_ust_objd_ops *ops; |
f4681817 MD |
383 | const char *transport_name; |
384 | struct ltt_channel *chan; | |
385 | int chan_objd; | |
386 | int ret = 0; | |
d028eddb | 387 | struct ltt_channel chan_priv_init; |
f4681817 | 388 | |
f4681817 MD |
389 | switch (channel_type) { |
390 | case PER_CPU_CHANNEL: | |
391 | if (chan_param->output == LTTNG_UST_MMAP) { | |
392 | transport_name = chan_param->overwrite ? | |
393 | "relay-overwrite-mmap" : "relay-discard-mmap"; | |
394 | } else { | |
395 | return -EINVAL; | |
396 | } | |
397 | ops = <tng_channel_ops; | |
398 | break; | |
399 | case METADATA_CHANNEL: | |
400 | if (chan_param->output == LTTNG_UST_MMAP) | |
401 | transport_name = "relay-metadata-mmap"; | |
402 | else | |
403 | return -EINVAL; | |
404 | ops = <tng_metadata_ops; | |
405 | break; | |
406 | default: | |
407 | transport_name = "<unknown>"; | |
fe38d4af MD |
408 | return -EINVAL; |
409 | } | |
410 | chan_objd = objd_alloc(NULL, ops); | |
411 | if (chan_objd < 0) { | |
412 | ret = chan_objd; | |
413 | goto objd_error; | |
f4681817 | 414 | } |
d028eddb MD |
415 | memset(&chan_priv_init, 0, sizeof(chan_priv_init)); |
416 | /* Copy of session UUID for consumer (availability through shm) */ | |
417 | memcpy(chan_priv_init.uuid, session->uuid, sizeof(session->uuid)); | |
418 | ||
f4681817 MD |
419 | /* |
420 | * We tolerate no failure path after channel creation. It will stay | |
421 | * invariant for the rest of the session. | |
422 | */ | |
423 | chan = ltt_channel_create(session, transport_name, NULL, | |
424 | chan_param->subbuf_size, | |
425 | chan_param->num_subbuf, | |
426 | chan_param->switch_timer_interval, | |
193183fb | 427 | chan_param->read_timer_interval, |
ef9ff354 MD |
428 | &uargs->channel.shm_fd, |
429 | &uargs->channel.wait_fd, | |
430 | &uargs->channel.memory_map_size, | |
d028eddb | 431 | &chan_priv_init); |
f4681817 MD |
432 | if (!chan) { |
433 | ret = -EINVAL; | |
434 | goto chan_error; | |
435 | } | |
436 | objd_set_private(chan_objd, chan); | |
437 | chan->objd = chan_objd; | |
438 | if (channel_type == METADATA_CHANNEL) { | |
439 | session->metadata = chan; | |
440 | lttng_metadata_create_events(chan_objd); | |
441 | } | |
f4681817 MD |
442 | /* The channel created holds a reference on the session */ |
443 | objd_ref(session_objd); | |
444 | ||
445 | return chan_objd; | |
446 | ||
447 | chan_error: | |
1ea11eab MD |
448 | { |
449 | int err; | |
450 | ||
d4419b81 | 451 | err = lttng_ust_objd_unref(chan_objd); |
1ea11eab MD |
452 | assert(!err); |
453 | } | |
f4681817 MD |
454 | objd_error: |
455 | return ret; | |
456 | } | |
457 | ||
458 | /** | |
459 | * lttng_session_cmd - lttng session object command | |
460 | * | |
461 | * @obj: the object | |
462 | * @cmd: the command | |
463 | * @arg: command arg | |
ef9ff354 | 464 | * @uargs: UST arguments (internal) |
f4681817 MD |
465 | * |
466 | * This descriptor implements lttng commands: | |
467 | * LTTNG_UST_CHANNEL | |
468 | * Returns a LTTng channel object descriptor | |
469 | * LTTNG_UST_ENABLE | |
470 | * Enables tracing for a session (weak enable) | |
471 | * LTTNG_UST_DISABLE | |
472 | * Disables tracing for a session (strong disable) | |
473 | * LTTNG_UST_METADATA | |
474 | * Returns a LTTng metadata object descriptor | |
475 | * | |
476 | * The returned channel will be deleted when its file descriptor is closed. | |
477 | */ | |
478 | static | |
ef9ff354 MD |
479 | long lttng_session_cmd(int objd, unsigned int cmd, unsigned long arg, |
480 | union ust_args *uargs) | |
f4681817 MD |
481 | { |
482 | struct ltt_session *session = objd_private(objd); | |
483 | ||
484 | switch (cmd) { | |
485 | case LTTNG_UST_CHANNEL: | |
486 | return lttng_abi_create_channel(objd, | |
487 | (struct lttng_ust_channel *) arg, | |
ef9ff354 | 488 | PER_CPU_CHANNEL, uargs); |
f4681817 MD |
489 | case LTTNG_UST_SESSION_START: |
490 | case LTTNG_UST_ENABLE: | |
491 | return ltt_session_enable(session); | |
492 | case LTTNG_UST_SESSION_STOP: | |
493 | case LTTNG_UST_DISABLE: | |
494 | return ltt_session_disable(session); | |
495 | case LTTNG_UST_METADATA: | |
496 | return lttng_abi_create_channel(objd, | |
497 | (struct lttng_ust_channel *) arg, | |
ef9ff354 | 498 | METADATA_CHANNEL, uargs); |
f4681817 MD |
499 | default: |
500 | return -EINVAL; | |
501 | } | |
502 | } | |
503 | ||
504 | /* | |
505 | * Called when the last file reference is dropped. | |
506 | * | |
507 | * Big fat note: channels and events are invariant for the whole session after | |
508 | * their creation. So this session destruction also destroys all channel and | |
509 | * event structures specific to this session (they are not destroyed when their | |
510 | * individual file is released). | |
511 | */ | |
512 | static | |
1ea11eab | 513 | int lttng_release_session(int objd) |
f4681817 MD |
514 | { |
515 | struct ltt_session *session = objd_private(objd); | |
516 | ||
1ea11eab | 517 | if (session) { |
f4681817 | 518 | ltt_session_destroy(session); |
1ea11eab MD |
519 | return 0; |
520 | } else { | |
521 | return -EINVAL; | |
522 | } | |
f4681817 MD |
523 | } |
524 | ||
b61ce3b2 | 525 | static const struct lttng_ust_objd_ops lttng_session_ops = { |
1ea11eab | 526 | .release = lttng_release_session, |
f4681817 MD |
527 | .cmd = lttng_session_cmd, |
528 | }; | |
529 | ||
51489cad | 530 | static |
ef9ff354 MD |
531 | long lttng_tracepoint_list_cmd(int objd, unsigned int cmd, unsigned long arg, |
532 | union ust_args *uargs) | |
51489cad | 533 | { |
c8fcf224 | 534 | struct lttng_ust_tracepoint_list *list = objd_private(objd); |
cbef6901 MD |
535 | struct lttng_ust_tracepoint_iter *tp = |
536 | (struct lttng_ust_tracepoint_iter *) arg; | |
c8fcf224 | 537 | struct lttng_ust_tracepoint_iter *iter; |
51489cad MD |
538 | |
539 | switch (cmd) { | |
540 | case LTTNG_UST_TRACEPOINT_LIST_GET: | |
c8fcf224 MD |
541 | { |
542 | retry: | |
543 | iter = lttng_ust_tracepoint_list_get_iter_next(list); | |
544 | if (!iter) | |
7bc53e94 | 545 | return -LTTNG_UST_ERR_NOENT; |
c8fcf224 MD |
546 | if (!strcmp(iter->name, "lttng_ust:metadata")) |
547 | goto retry; | |
548 | memcpy(tp, iter, sizeof(*tp)); | |
51489cad | 549 | return 0; |
c8fcf224 | 550 | } |
51489cad MD |
551 | default: |
552 | return -EINVAL; | |
553 | } | |
554 | } | |
555 | ||
556 | static | |
557 | int lttng_abi_tracepoint_list(void) | |
558 | { | |
559 | int list_objd, ret; | |
c8fcf224 | 560 | struct lttng_ust_tracepoint_list *list; |
51489cad MD |
561 | |
562 | list_objd = objd_alloc(NULL, <tng_tracepoint_list_ops); | |
563 | if (list_objd < 0) { | |
564 | ret = list_objd; | |
565 | goto objd_error; | |
566 | } | |
567 | list = zmalloc(sizeof(*list)); | |
568 | if (!list) { | |
569 | ret = -ENOMEM; | |
570 | goto alloc_error; | |
571 | } | |
572 | objd_set_private(list_objd, list); | |
573 | ||
c8fcf224 MD |
574 | /* populate list by walking on all registered probes. */ |
575 | ret = ltt_probes_get_event_list(list); | |
576 | if (ret) { | |
577 | goto list_error; | |
578 | } | |
51489cad MD |
579 | return list_objd; |
580 | ||
c8fcf224 MD |
581 | list_error: |
582 | free(list); | |
51489cad MD |
583 | alloc_error: |
584 | { | |
585 | int err; | |
586 | ||
587 | err = lttng_ust_objd_unref(list_objd); | |
588 | assert(!err); | |
589 | } | |
590 | objd_error: | |
591 | return ret; | |
592 | } | |
593 | ||
594 | static | |
595 | int lttng_release_tracepoint_list(int objd) | |
596 | { | |
c8fcf224 | 597 | struct lttng_ust_tracepoint_list *list = objd_private(objd); |
51489cad MD |
598 | |
599 | if (list) { | |
c8fcf224 | 600 | ltt_probes_prune_event_list(list); |
51489cad MD |
601 | free(list); |
602 | return 0; | |
603 | } else { | |
604 | return -EINVAL; | |
605 | } | |
606 | } | |
607 | ||
608 | static const struct lttng_ust_objd_ops lttng_tracepoint_list_ops = { | |
609 | .release = lttng_release_tracepoint_list, | |
610 | .cmd = lttng_tracepoint_list_cmd, | |
611 | }; | |
612 | ||
06d4f27e MD |
613 | static |
614 | long lttng_tracepoint_field_list_cmd(int objd, unsigned int cmd, | |
615 | unsigned long arg, union ust_args *uargs) | |
616 | { | |
617 | struct lttng_ust_field_list *list = objd_private(objd); | |
40003310 | 618 | struct lttng_ust_field_iter *tp = &uargs->field_list.entry; |
06d4f27e MD |
619 | struct lttng_ust_field_iter *iter; |
620 | ||
621 | switch (cmd) { | |
622 | case LTTNG_UST_TRACEPOINT_FIELD_LIST_GET: | |
623 | { | |
624 | retry: | |
625 | iter = lttng_ust_field_list_get_iter_next(list); | |
626 | if (!iter) | |
7bc53e94 | 627 | return -LTTNG_UST_ERR_NOENT; |
06d4f27e MD |
628 | if (!strcmp(iter->event_name, "lttng_ust:metadata")) |
629 | goto retry; | |
630 | memcpy(tp, iter, sizeof(*tp)); | |
631 | return 0; | |
632 | } | |
633 | default: | |
634 | return -EINVAL; | |
635 | } | |
636 | } | |
637 | ||
638 | static | |
639 | int lttng_abi_tracepoint_field_list(void) | |
640 | { | |
641 | int list_objd, ret; | |
642 | struct lttng_ust_field_list *list; | |
643 | ||
644 | list_objd = objd_alloc(NULL, <tng_tracepoint_field_list_ops); | |
645 | if (list_objd < 0) { | |
646 | ret = list_objd; | |
647 | goto objd_error; | |
648 | } | |
649 | list = zmalloc(sizeof(*list)); | |
650 | if (!list) { | |
651 | ret = -ENOMEM; | |
652 | goto alloc_error; | |
653 | } | |
654 | objd_set_private(list_objd, list); | |
655 | ||
656 | /* populate list by walking on all registered probes. */ | |
657 | ret = ltt_probes_get_field_list(list); | |
658 | if (ret) { | |
659 | goto list_error; | |
660 | } | |
661 | return list_objd; | |
662 | ||
663 | list_error: | |
664 | free(list); | |
665 | alloc_error: | |
666 | { | |
667 | int err; | |
668 | ||
669 | err = lttng_ust_objd_unref(list_objd); | |
670 | assert(!err); | |
671 | } | |
672 | objd_error: | |
673 | return ret; | |
674 | } | |
675 | ||
676 | static | |
677 | int lttng_release_tracepoint_field_list(int objd) | |
678 | { | |
679 | struct lttng_ust_field_list *list = objd_private(objd); | |
680 | ||
681 | if (list) { | |
682 | ltt_probes_prune_field_list(list); | |
683 | free(list); | |
684 | return 0; | |
685 | } else { | |
686 | return -EINVAL; | |
687 | } | |
688 | } | |
689 | ||
690 | static const struct lttng_ust_objd_ops lttng_tracepoint_field_list_ops = { | |
691 | .release = lttng_release_tracepoint_field_list, | |
692 | .cmd = lttng_tracepoint_field_list_cmd, | |
693 | }; | |
694 | ||
381c0f1e | 695 | struct stream_priv_data { |
4cfec15c | 696 | struct lttng_ust_lib_ring_buffer *buf; |
381c0f1e MD |
697 | struct ltt_channel *ltt_chan; |
698 | }; | |
699 | ||
f4681817 | 700 | static |
ef9ff354 MD |
701 | int lttng_abi_open_stream(int channel_objd, struct lttng_ust_stream *info, |
702 | union ust_args *uargs) | |
f4681817 MD |
703 | { |
704 | struct ltt_channel *channel = objd_private(channel_objd); | |
4cfec15c | 705 | struct lttng_ust_lib_ring_buffer *buf; |
381c0f1e | 706 | struct stream_priv_data *priv; |
f4681817 MD |
707 | int stream_objd, ret; |
708 | ||
381c0f1e | 709 | buf = channel->ops->buffer_read_open(channel->chan, channel->handle, |
ef9ff354 MD |
710 | &uargs->stream.shm_fd, |
711 | &uargs->stream.wait_fd, | |
712 | &uargs->stream.memory_map_size); | |
f4681817 MD |
713 | if (!buf) |
714 | return -ENOENT; | |
715 | ||
381c0f1e MD |
716 | priv = zmalloc(sizeof(*priv)); |
717 | if (!priv) { | |
718 | ret = -ENOMEM; | |
719 | goto alloc_error; | |
720 | } | |
721 | priv->buf = buf; | |
722 | priv->ltt_chan = channel; | |
723 | stream_objd = objd_alloc(priv, &lib_ring_buffer_objd_ops); | |
f4681817 MD |
724 | if (stream_objd < 0) { |
725 | ret = stream_objd; | |
726 | goto objd_error; | |
727 | } | |
381c0f1e MD |
728 | /* Hold a reference on the channel object descriptor */ |
729 | objd_ref(channel_objd); | |
f4681817 MD |
730 | return stream_objd; |
731 | ||
732 | objd_error: | |
381c0f1e MD |
733 | free(priv); |
734 | alloc_error: | |
735 | channel->ops->buffer_read_close(buf, channel->handle); | |
f4681817 MD |
736 | return ret; |
737 | } | |
f4681817 MD |
738 | |
739 | static | |
740 | int lttng_abi_create_event(int channel_objd, | |
741 | struct lttng_ust_event *event_param) | |
742 | { | |
743 | struct ltt_channel *channel = objd_private(channel_objd); | |
744 | struct ltt_event *event; | |
745 | int event_objd, ret; | |
746 | ||
747 | event_param->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
748 | event_objd = objd_alloc(NULL, <tng_event_ops); | |
749 | if (event_objd < 0) { | |
750 | ret = event_objd; | |
751 | goto objd_error; | |
752 | } | |
753 | /* | |
754 | * We tolerate no failure path after event creation. It will stay | |
755 | * invariant for the rest of the session. | |
756 | */ | |
2d78951a | 757 | ret = ltt_event_create(channel, event_param, &event); |
576599a0 | 758 | if (ret < 0) { |
f4681817 MD |
759 | goto event_error; |
760 | } | |
761 | objd_set_private(event_objd, event); | |
762 | /* The event holds a reference on the channel */ | |
763 | objd_ref(channel_objd); | |
764 | return event_objd; | |
765 | ||
766 | event_error: | |
1ea11eab MD |
767 | { |
768 | int err; | |
769 | ||
d4419b81 | 770 | err = lttng_ust_objd_unref(event_objd); |
1ea11eab MD |
771 | assert(!err); |
772 | } | |
f4681817 MD |
773 | objd_error: |
774 | return ret; | |
775 | } | |
776 | ||
e6c12e3d MD |
777 | static |
778 | int lttng_abi_create_wildcard(int channel_objd, | |
779 | struct lttng_ust_event *event_param) | |
780 | { | |
781 | struct ltt_channel *channel = objd_private(channel_objd); | |
782 | struct session_wildcard *wildcard; | |
783 | int wildcard_objd, ret; | |
784 | ||
785 | event_param->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
786 | wildcard_objd = objd_alloc(NULL, <tng_wildcard_ops); | |
787 | if (wildcard_objd < 0) { | |
788 | ret = wildcard_objd; | |
789 | goto objd_error; | |
790 | } | |
791 | /* | |
792 | * We tolerate no failure path after wildcard creation. It will | |
793 | * stay invariant for the rest of the session. | |
794 | */ | |
795 | ret = ltt_wildcard_create(channel, event_param, &wildcard); | |
796 | if (ret < 0) { | |
797 | goto wildcard_error; | |
798 | } | |
799 | objd_set_private(wildcard_objd, wildcard); | |
800 | /* The wildcard holds a reference on the channel */ | |
801 | objd_ref(channel_objd); | |
802 | return wildcard_objd; | |
803 | ||
804 | wildcard_error: | |
805 | { | |
806 | int err; | |
807 | ||
808 | err = lttng_ust_objd_unref(wildcard_objd); | |
809 | assert(!err); | |
810 | } | |
811 | objd_error: | |
812 | return ret; | |
813 | } | |
814 | ||
f4681817 MD |
815 | /** |
816 | * lttng_channel_cmd - lttng control through object descriptors | |
817 | * | |
818 | * @objd: the object descriptor | |
819 | * @cmd: the command | |
820 | * @arg: command arg | |
ef9ff354 | 821 | * @uargs: UST arguments (internal) |
f4681817 MD |
822 | * |
823 | * This object descriptor implements lttng commands: | |
824 | * LTTNG_UST_STREAM | |
825 | * Returns an event stream object descriptor or failure. | |
826 | * (typically, one event stream records events from one CPU) | |
827 | * LTTNG_UST_EVENT | |
828 | * Returns an event object descriptor or failure. | |
829 | * LTTNG_UST_CONTEXT | |
830 | * Prepend a context field to each event in the channel | |
831 | * LTTNG_UST_ENABLE | |
832 | * Enable recording for events in this channel (weak enable) | |
833 | * LTTNG_UST_DISABLE | |
834 | * Disable recording for events in this channel (strong disable) | |
835 | * | |
836 | * Channel and event file descriptors also hold a reference on the session. | |
837 | */ | |
838 | static | |
ef9ff354 MD |
839 | long lttng_channel_cmd(int objd, unsigned int cmd, unsigned long arg, |
840 | union ust_args *uargs) | |
f4681817 MD |
841 | { |
842 | struct ltt_channel *channel = objd_private(objd); | |
843 | ||
844 | switch (cmd) { | |
845 | case LTTNG_UST_STREAM: | |
381c0f1e MD |
846 | { |
847 | struct lttng_ust_stream *stream; | |
848 | ||
849 | stream = (struct lttng_ust_stream *) arg; | |
850 | /* stream used as output */ | |
ef9ff354 | 851 | return lttng_abi_open_stream(objd, stream, uargs); |
381c0f1e | 852 | } |
f4681817 | 853 | case LTTNG_UST_EVENT: |
1f18504e MD |
854 | { |
855 | struct lttng_ust_event *event_param = | |
856 | (struct lttng_ust_event *) arg; | |
6b0e60f1 MD |
857 | if (event_param->name[strlen(event_param->name) - 1] == '*') { |
858 | /* If ends with wildcard, create wildcard. */ | |
859 | return lttng_abi_create_wildcard(objd, event_param); | |
1f18504e | 860 | } else { |
6b0e60f1 | 861 | return lttng_abi_create_event(objd, event_param); |
1f18504e MD |
862 | } |
863 | } | |
f4681817 MD |
864 | case LTTNG_UST_CONTEXT: |
865 | return lttng_abi_add_context(objd, | |
866 | (struct lttng_ust_context *) arg, | |
867 | &channel->ctx, channel->session); | |
868 | case LTTNG_UST_ENABLE: | |
869 | return ltt_channel_enable(channel); | |
870 | case LTTNG_UST_DISABLE: | |
871 | return ltt_channel_disable(channel); | |
43d330a4 MD |
872 | case LTTNG_UST_FLUSH_BUFFER: |
873 | return channel->ops->flush_buffer(channel->chan, channel->handle); | |
f4681817 MD |
874 | default: |
875 | return -EINVAL; | |
876 | } | |
877 | } | |
878 | ||
879 | /** | |
880 | * lttng_metadata_cmd - lttng control through object descriptors | |
881 | * | |
882 | * @objd: the object descriptor | |
883 | * @cmd: the command | |
884 | * @arg: command arg | |
ef9ff354 | 885 | * @uargs: UST arguments (internal) |
f4681817 MD |
886 | * |
887 | * This object descriptor implements lttng commands: | |
888 | * LTTNG_UST_STREAM | |
889 | * Returns an event stream file descriptor or failure. | |
890 | * | |
891 | * Channel and event file descriptors also hold a reference on the session. | |
892 | */ | |
893 | static | |
ef9ff354 MD |
894 | long lttng_metadata_cmd(int objd, unsigned int cmd, unsigned long arg, |
895 | union ust_args *uargs) | |
f4681817 | 896 | { |
43861eab MD |
897 | struct ltt_channel *channel = objd_private(objd); |
898 | ||
f4681817 MD |
899 | switch (cmd) { |
900 | case LTTNG_UST_STREAM: | |
381c0f1e MD |
901 | { |
902 | struct lttng_ust_stream *stream; | |
903 | ||
904 | stream = (struct lttng_ust_stream *) arg; | |
905 | /* stream used as output */ | |
ef9ff354 | 906 | return lttng_abi_open_stream(objd, stream, uargs); |
381c0f1e | 907 | } |
43d330a4 MD |
908 | case LTTNG_UST_FLUSH_BUFFER: |
909 | return channel->ops->flush_buffer(channel->chan, channel->handle); | |
f4681817 MD |
910 | default: |
911 | return -EINVAL; | |
912 | } | |
913 | } | |
914 | ||
915 | #if 0 | |
916 | /** | |
917 | * lttng_channel_poll - lttng stream addition/removal monitoring | |
918 | * | |
919 | * @file: the file | |
920 | * @wait: poll table | |
921 | */ | |
922 | unsigned int lttng_channel_poll(struct file *file, poll_table *wait) | |
923 | { | |
924 | struct ltt_channel *channel = file->private_data; | |
925 | unsigned int mask = 0; | |
926 | ||
927 | if (file->f_mode & FMODE_READ) { | |
928 | poll_wait_set_exclusive(wait); | |
929 | poll_wait(file, channel->ops->get_hp_wait_queue(channel->chan), | |
930 | wait); | |
931 | ||
932 | if (channel->ops->is_disabled(channel->chan)) | |
933 | return POLLERR; | |
934 | if (channel->ops->is_finalized(channel->chan)) | |
935 | return POLLHUP; | |
936 | if (channel->ops->buffer_has_read_closed_stream(channel->chan)) | |
937 | return POLLIN | POLLRDNORM; | |
938 | return 0; | |
939 | } | |
940 | return mask; | |
941 | ||
942 | } | |
943 | #endif //0 | |
944 | ||
945 | static | |
946 | int lttng_channel_release(int objd) | |
947 | { | |
948 | struct ltt_channel *channel = objd_private(objd); | |
949 | ||
950 | if (channel) | |
d4419b81 | 951 | return lttng_ust_objd_unref(channel->session->objd); |
f4681817 MD |
952 | return 0; |
953 | } | |
954 | ||
b61ce3b2 | 955 | static const struct lttng_ust_objd_ops lttng_channel_ops = { |
f4681817 MD |
956 | .release = lttng_channel_release, |
957 | //.poll = lttng_channel_poll, | |
958 | .cmd = lttng_channel_cmd, | |
959 | }; | |
960 | ||
b61ce3b2 | 961 | static const struct lttng_ust_objd_ops lttng_metadata_ops = { |
f4681817 MD |
962 | .release = lttng_channel_release, |
963 | .cmd = lttng_metadata_cmd, | |
964 | }; | |
965 | ||
381c0f1e MD |
966 | /** |
967 | * lttng_rb_cmd - lttng ring buffer control through object descriptors | |
968 | * | |
969 | * @objd: the object descriptor | |
970 | * @cmd: the command | |
971 | * @arg: command arg | |
ef9ff354 | 972 | * @uargs: UST arguments (internal) |
381c0f1e MD |
973 | * |
974 | * This object descriptor implements lttng commands: | |
975 | * (None for now. Access is done directly though shm.) | |
381c0f1e MD |
976 | */ |
977 | static | |
ef9ff354 MD |
978 | long lttng_rb_cmd(int objd, unsigned int cmd, unsigned long arg, |
979 | union ust_args *uargs) | |
381c0f1e | 980 | { |
381c0f1e MD |
981 | switch (cmd) { |
982 | default: | |
983 | return -EINVAL; | |
984 | } | |
985 | } | |
986 | ||
987 | static | |
988 | int lttng_rb_release(int objd) | |
989 | { | |
990 | struct stream_priv_data *priv = objd_private(objd); | |
4cfec15c | 991 | struct lttng_ust_lib_ring_buffer *buf; |
381c0f1e MD |
992 | struct ltt_channel *channel; |
993 | ||
994 | if (priv) { | |
995 | buf = priv->buf; | |
996 | channel = priv->ltt_chan; | |
997 | free(priv); | |
45e9e699 MD |
998 | /* |
999 | * If we are at ABI exit, we don't want to close the | |
1000 | * buffer opened for read: it is being shared between | |
1001 | * the parent and child (right after fork), and we don't | |
1002 | * want the child to close it for the parent. For a real | |
1003 | * exit, we don't care about marking it as closed, as | |
1004 | * the consumer daemon (if there is one) will do fine | |
1005 | * even if we don't mark it as "closed" for reading on | |
1006 | * our side. | |
1007 | * We only mark it as closed if it is being explicitely | |
1008 | * released by the session daemon with an explicit | |
1009 | * release command. | |
1010 | */ | |
1011 | if (!lttng_ust_abi_close_in_progress) | |
1012 | channel->ops->buffer_read_close(buf, channel->handle); | |
381c0f1e | 1013 | |
d4419b81 | 1014 | return lttng_ust_objd_unref(channel->objd); |
381c0f1e MD |
1015 | } |
1016 | return 0; | |
1017 | } | |
1018 | ||
b61ce3b2 | 1019 | static const struct lttng_ust_objd_ops lib_ring_buffer_objd_ops = { |
381c0f1e MD |
1020 | .release = lttng_rb_release, |
1021 | .cmd = lttng_rb_cmd, | |
1022 | }; | |
1023 | ||
f4681817 MD |
1024 | /** |
1025 | * lttng_event_cmd - lttng control through object descriptors | |
1026 | * | |
1027 | * @objd: the object descriptor | |
1028 | * @cmd: the command | |
1029 | * @arg: command arg | |
ef9ff354 | 1030 | * @uargs: UST arguments (internal) |
f4681817 MD |
1031 | * |
1032 | * This object descriptor implements lttng commands: | |
1033 | * LTTNG_UST_CONTEXT | |
1034 | * Prepend a context field to each record of this event | |
1035 | * LTTNG_UST_ENABLE | |
1036 | * Enable recording for this event (weak enable) | |
1037 | * LTTNG_UST_DISABLE | |
1038 | * Disable recording for this event (strong disable) | |
2d78951a MD |
1039 | * LTTNG_UST_FILTER |
1040 | * Attach a filter to an event. | |
f4681817 MD |
1041 | */ |
1042 | static | |
ef9ff354 MD |
1043 | long lttng_event_cmd(int objd, unsigned int cmd, unsigned long arg, |
1044 | union ust_args *uargs) | |
f4681817 MD |
1045 | { |
1046 | struct ltt_event *event = objd_private(objd); | |
1047 | ||
1048 | switch (cmd) { | |
1049 | case LTTNG_UST_CONTEXT: | |
1050 | return lttng_abi_add_context(objd, | |
1051 | (struct lttng_ust_context *) arg, | |
1052 | &event->ctx, event->chan->session); | |
1053 | case LTTNG_UST_ENABLE: | |
1054 | return ltt_event_enable(event); | |
1055 | case LTTNG_UST_DISABLE: | |
1056 | return ltt_event_disable(event); | |
2d78951a MD |
1057 | case LTTNG_UST_FILTER: |
1058 | { | |
1059 | int ret; | |
1060 | ret = lttng_filter_event_attach_bytecode(event, | |
1061 | (struct lttng_ust_filter_bytecode *) arg); | |
1062 | if (ret) | |
1063 | return ret; | |
1064 | lttng_filter_event_link_bytecode(event, | |
1065 | event->filter_bytecode); | |
1066 | return 0; | |
1067 | } | |
f4681817 MD |
1068 | default: |
1069 | return -EINVAL; | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | static | |
1074 | int lttng_event_release(int objd) | |
1075 | { | |
1076 | struct ltt_event *event = objd_private(objd); | |
1077 | ||
1078 | if (event) | |
d4419b81 | 1079 | return lttng_ust_objd_unref(event->chan->objd); |
f4681817 MD |
1080 | return 0; |
1081 | } | |
1082 | ||
1083 | /* TODO: filter control ioctl */ | |
b61ce3b2 | 1084 | static const struct lttng_ust_objd_ops lttng_event_ops = { |
f4681817 MD |
1085 | .release = lttng_event_release, |
1086 | .cmd = lttng_event_cmd, | |
1087 | }; | |
1088 | ||
e6c12e3d MD |
1089 | /** |
1090 | * lttng_wildcard_cmd - lttng control through object descriptors | |
1091 | * | |
1092 | * @objd: the object descriptor | |
1093 | * @cmd: the command | |
1094 | * @arg: command arg | |
ef9ff354 | 1095 | * @uargs: UST arguments (internal) |
e6c12e3d MD |
1096 | * |
1097 | * This object descriptor implements lttng commands: | |
1098 | * LTTNG_UST_CONTEXT | |
1099 | * Prepend a context field to each record of events of this | |
1100 | * wildcard. | |
1101 | * LTTNG_UST_ENABLE | |
1102 | * Enable recording for these wildcard events (weak enable) | |
1103 | * LTTNG_UST_DISABLE | |
1104 | * Disable recording for these wildcard events (strong disable) | |
2d78951a MD |
1105 | * LTTNG_UST_FILTER |
1106 | * Attach a filter to a wildcard. | |
e6c12e3d MD |
1107 | */ |
1108 | static | |
ef9ff354 MD |
1109 | long lttng_wildcard_cmd(int objd, unsigned int cmd, unsigned long arg, |
1110 | union ust_args *uargs) | |
e6c12e3d MD |
1111 | { |
1112 | struct session_wildcard *wildcard = objd_private(objd); | |
1113 | ||
1114 | switch (cmd) { | |
1115 | case LTTNG_UST_CONTEXT: | |
1116 | return -ENOSYS; /* not implemented yet */ | |
1117 | #if 0 | |
1118 | return lttng_abi_add_context(objd, | |
1119 | (struct lttng_ust_context *) arg, | |
1120 | &wildcard->ctx, wildcard->chan->session); | |
1121 | #endif | |
1122 | case LTTNG_UST_ENABLE: | |
1123 | return ltt_wildcard_enable(wildcard); | |
1124 | case LTTNG_UST_DISABLE: | |
1125 | return ltt_wildcard_disable(wildcard); | |
2d78951a MD |
1126 | case LTTNG_UST_FILTER: |
1127 | { | |
1128 | int ret; | |
1129 | ||
1130 | ret = lttng_filter_wildcard_attach_bytecode(wildcard, | |
1131 | (struct lttng_ust_filter_bytecode *) arg); | |
1132 | if (ret) | |
1133 | return ret; | |
1134 | lttng_filter_wildcard_link_bytecode(wildcard); | |
1135 | return 0; | |
1136 | } | |
e6c12e3d MD |
1137 | default: |
1138 | return -EINVAL; | |
1139 | } | |
1140 | } | |
1141 | ||
1142 | static | |
1143 | int lttng_wildcard_release(int objd) | |
1144 | { | |
1145 | struct session_wildcard *wildcard = objd_private(objd); | |
1146 | ||
1147 | if (wildcard) | |
1148 | return lttng_ust_objd_unref(wildcard->chan->objd); | |
1149 | return 0; | |
1150 | } | |
1151 | ||
1152 | /* TODO: filter control ioctl */ | |
1153 | static const struct lttng_ust_objd_ops lttng_wildcard_ops = { | |
1154 | .release = lttng_wildcard_release, | |
1155 | .cmd = lttng_wildcard_cmd, | |
1156 | }; | |
1157 | ||
b35d179d | 1158 | void lttng_ust_abi_exit(void) |
f4681817 | 1159 | { |
45e9e699 | 1160 | lttng_ust_abi_close_in_progress = 1; |
f4681817 | 1161 | objd_table_destroy(); |
45e9e699 | 1162 | lttng_ust_abi_close_in_progress = 0; |
f4681817 | 1163 | } |