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> |
f4681817 MD |
41 | #include <urcu/compiler.h> |
42 | #include <urcu/list.h> | |
4318ae1b | 43 | #include <lttng/ust-events.h> |
23c8854a | 44 | #include <lttng/ust-version.h> |
902e1379 | 45 | #include <lttng/tracepoint.h> |
d8de1354 | 46 | #include "tracepoint-internal.h" |
44c72f10 MD |
47 | #include <usterr-signal-safe.h> |
48 | #include <helper.h> | |
f4681817 | 49 | #include "ltt-tracer.h" |
4ab44fbe | 50 | |
45e9e699 MD |
51 | static int lttng_ust_abi_close_in_progress; |
52 | ||
51489cad MD |
53 | static |
54 | int lttng_abi_tracepoint_list(void); | |
06d4f27e MD |
55 | static |
56 | int lttng_abi_tracepoint_field_list(void); | |
51489cad | 57 | |
f4681817 MD |
58 | /* |
59 | * Object descriptor table. Should be protected from concurrent access | |
60 | * by the caller. | |
61 | */ | |
62 | ||
b61ce3b2 | 63 | struct lttng_ust_obj { |
f4681817 MD |
64 | union { |
65 | struct { | |
66 | void *private_data; | |
b61ce3b2 | 67 | const struct lttng_ust_objd_ops *ops; |
f4681817 MD |
68 | int f_count; |
69 | } s; | |
70 | int freelist_next; /* offset freelist. end is -1. */ | |
71 | } u; | |
72 | }; | |
73 | ||
b61ce3b2 MD |
74 | struct lttng_ust_objd_table { |
75 | struct lttng_ust_obj *array; | |
f4681817 MD |
76 | unsigned int len, allocated_len; |
77 | int freelist_head; /* offset freelist head. end is -1 */ | |
78 | }; | |
79 | ||
b61ce3b2 | 80 | static struct lttng_ust_objd_table objd_table = { |
f4681817 MD |
81 | .freelist_head = -1, |
82 | }; | |
83 | ||
84 | static | |
b61ce3b2 | 85 | int objd_alloc(void *private_data, const struct lttng_ust_objd_ops *ops) |
f4681817 | 86 | { |
b61ce3b2 | 87 | struct lttng_ust_obj *obj; |
f4681817 MD |
88 | |
89 | if (objd_table.freelist_head != -1) { | |
90 | obj = &objd_table.array[objd_table.freelist_head]; | |
91 | objd_table.freelist_head = obj->u.freelist_next; | |
92 | goto end; | |
93 | } | |
94 | ||
95 | if (objd_table.len >= objd_table.allocated_len) { | |
96 | unsigned int new_allocated_len, old_allocated_len; | |
b61ce3b2 | 97 | struct lttng_ust_obj *new_table, *old_table; |
f4681817 MD |
98 | |
99 | old_allocated_len = objd_table.allocated_len; | |
100 | old_table = objd_table.array; | |
101 | if (!old_allocated_len) | |
102 | new_allocated_len = 1; | |
103 | else | |
104 | new_allocated_len = old_allocated_len << 1; | |
b61ce3b2 | 105 | new_table = zmalloc(sizeof(struct lttng_ust_obj) * new_allocated_len); |
f4681817 MD |
106 | if (!new_table) |
107 | return -ENOMEM; | |
108 | memcpy(new_table, old_table, | |
b61ce3b2 | 109 | sizeof(struct lttng_ust_obj) * old_allocated_len); |
f4681817 MD |
110 | free(old_table); |
111 | objd_table.array = new_table; | |
112 | objd_table.allocated_len = new_allocated_len; | |
113 | } | |
114 | obj = &objd_table.array[objd_table.len]; | |
115 | objd_table.len++; | |
116 | end: | |
117 | obj->u.s.private_data = private_data; | |
118 | obj->u.s.ops = ops; | |
a4be8962 MD |
119 | obj->u.s.f_count = 2; /* count == 1 : object is allocated */ |
120 | /* count == 2 : allocated + hold ref */ | |
f4681817 MD |
121 | return obj - objd_table.array; |
122 | } | |
123 | ||
124 | static | |
b61ce3b2 | 125 | struct lttng_ust_obj *_objd_get(int id) |
f4681817 MD |
126 | { |
127 | if (id >= objd_table.len) | |
128 | return NULL; | |
a4be8962 MD |
129 | if (!objd_table.array[id].u.s.f_count) |
130 | return NULL; | |
f4681817 MD |
131 | return &objd_table.array[id]; |
132 | } | |
133 | ||
134 | static | |
135 | void *objd_private(int id) | |
136 | { | |
b61ce3b2 | 137 | struct lttng_ust_obj *obj = _objd_get(id); |
f4681817 MD |
138 | assert(obj); |
139 | return obj->u.s.private_data; | |
140 | } | |
141 | ||
142 | static | |
143 | void objd_set_private(int id, void *private_data) | |
144 | { | |
b61ce3b2 | 145 | struct lttng_ust_obj *obj = _objd_get(id); |
f4681817 MD |
146 | assert(obj); |
147 | obj->u.s.private_data = private_data; | |
148 | } | |
149 | ||
b61ce3b2 | 150 | const struct lttng_ust_objd_ops *objd_ops(int id) |
f4681817 | 151 | { |
b61ce3b2 | 152 | struct lttng_ust_obj *obj = _objd_get(id); |
46050b1a | 153 | |
a4be8962 MD |
154 | if (!obj) |
155 | return NULL; | |
f4681817 MD |
156 | return obj->u.s.ops; |
157 | } | |
158 | ||
159 | static | |
160 | void objd_free(int id) | |
161 | { | |
b61ce3b2 | 162 | struct lttng_ust_obj *obj = _objd_get(id); |
f4681817 MD |
163 | |
164 | assert(obj); | |
165 | obj->u.freelist_next = objd_table.freelist_head; | |
166 | objd_table.freelist_head = obj - objd_table.array; | |
a4be8962 MD |
167 | assert(obj->u.s.f_count == 1); |
168 | obj->u.s.f_count = 0; /* deallocated */ | |
f4681817 MD |
169 | } |
170 | ||
171 | static | |
172 | void objd_ref(int id) | |
173 | { | |
b61ce3b2 | 174 | struct lttng_ust_obj *obj = _objd_get(id); |
f4681817 MD |
175 | obj->u.s.f_count++; |
176 | } | |
177 | ||
d4419b81 | 178 | int lttng_ust_objd_unref(int id) |
f4681817 | 179 | { |
b61ce3b2 | 180 | struct lttng_ust_obj *obj = _objd_get(id); |
f4681817 | 181 | |
1ea11eab MD |
182 | if (!obj) |
183 | return -EINVAL; | |
a4be8962 MD |
184 | if (obj->u.s.f_count == 1) { |
185 | ERR("Reference counting error\n"); | |
186 | return -EINVAL; | |
187 | } | |
188 | if ((--obj->u.s.f_count) == 1) { | |
b61ce3b2 | 189 | const struct lttng_ust_objd_ops *ops = objd_ops(id); |
a4be8962 | 190 | |
f4681817 MD |
191 | if (ops->release) |
192 | ops->release(id); | |
193 | objd_free(id); | |
194 | } | |
1ea11eab | 195 | return 0; |
f4681817 MD |
196 | } |
197 | ||
198 | static | |
199 | void objd_table_destroy(void) | |
200 | { | |
a4be8962 MD |
201 | int i; |
202 | ||
fb50c39d | 203 | for (i = 0; i < objd_table.allocated_len; i++) |
d4419b81 | 204 | (void) lttng_ust_objd_unref(i); |
f4681817 | 205 | free(objd_table.array); |
02fb3381 MD |
206 | objd_table.array = NULL; |
207 | objd_table.len = 0; | |
208 | objd_table.allocated_len = 0; | |
17dfb34b | 209 | objd_table.freelist_head = -1; |
f4681817 MD |
210 | } |
211 | ||
212 | /* | |
213 | * This is LTTng's own personal way to create an ABI for sessiond. | |
214 | * We send commands over a socket. | |
215 | */ | |
216 | ||
b61ce3b2 MD |
217 | static const struct lttng_ust_objd_ops lttng_ops; |
218 | static const struct lttng_ust_objd_ops lttng_session_ops; | |
219 | static const struct lttng_ust_objd_ops lttng_channel_ops; | |
220 | static const struct lttng_ust_objd_ops lttng_metadata_ops; | |
221 | static const struct lttng_ust_objd_ops lttng_event_ops; | |
e6c12e3d | 222 | static const struct lttng_ust_objd_ops lttng_wildcard_ops; |
b61ce3b2 | 223 | static const struct lttng_ust_objd_ops lib_ring_buffer_objd_ops; |
51489cad | 224 | static const struct lttng_ust_objd_ops lttng_tracepoint_list_ops; |
06d4f27e | 225 | static const struct lttng_ust_objd_ops lttng_tracepoint_field_list_ops; |
f4681817 MD |
226 | |
227 | enum channel_type { | |
228 | PER_CPU_CHANNEL, | |
229 | METADATA_CHANNEL, | |
230 | }; | |
231 | ||
46050b1a MD |
232 | int lttng_abi_create_root_handle(void) |
233 | { | |
234 | int root_handle; | |
235 | ||
236 | root_handle = objd_alloc(NULL, <tng_ops); | |
46050b1a MD |
237 | return root_handle; |
238 | } | |
239 | ||
818173b9 | 240 | static |
f4681817 MD |
241 | int lttng_abi_create_session(void) |
242 | { | |
243 | struct ltt_session *session; | |
244 | int session_objd, ret; | |
245 | ||
246 | session = ltt_session_create(); | |
247 | if (!session) | |
248 | return -ENOMEM; | |
249 | session_objd = objd_alloc(session, <tng_session_ops); | |
250 | if (session_objd < 0) { | |
251 | ret = session_objd; | |
252 | goto objd_error; | |
253 | } | |
254 | session->objd = session_objd; | |
255 | return session_objd; | |
256 | ||
257 | objd_error: | |
258 | ltt_session_destroy(session); | |
259 | return ret; | |
260 | } | |
261 | ||
f4681817 MD |
262 | static |
263 | long lttng_abi_tracer_version(int objd, | |
264 | struct lttng_ust_tracer_version *v) | |
265 | { | |
0f4eaec3 MD |
266 | v->major = LTTNG_UST_INTERNAL_MAJOR_VERSION; |
267 | v->minor = LTTNG_UST_INTERNAL_MINOR_VERSION; | |
268 | v->patchlevel = LTTNG_UST_INTERNAL_PATCHLEVEL_VERSION; | |
f4681817 MD |
269 | return 0; |
270 | } | |
271 | ||
272 | static | |
273 | long lttng_abi_add_context(int objd, | |
274 | struct lttng_ust_context *context_param, | |
275 | struct lttng_ctx **ctx, struct ltt_session *session) | |
276 | { | |
277 | if (session->been_active) | |
278 | return -EPERM; | |
279 | ||
280 | switch (context_param->ctx) { | |
8de38cf7 MD |
281 | case LTTNG_UST_CONTEXT_PTHREAD_ID: |
282 | return lttng_add_pthread_id_to_ctx(ctx); | |
3b402b40 MD |
283 | case LTTNG_UST_CONTEXT_VTID: |
284 | return lttng_add_vtid_to_ctx(ctx); | |
c1ef86f0 MD |
285 | case LTTNG_UST_CONTEXT_VPID: |
286 | return lttng_add_vpid_to_ctx(ctx); | |
4847e9bb MD |
287 | case LTTNG_UST_CONTEXT_PROCNAME: |
288 | return lttng_add_procname_to_ctx(ctx); | |
e8e05404 MD |
289 | case LTTNG_UST_CONTEXT_IP: |
290 | return lttng_add_ip_to_ctx(ctx); | |
f4681817 MD |
291 | default: |
292 | return -EINVAL; | |
293 | } | |
294 | } | |
295 | ||
296 | /** | |
297 | * lttng_cmd - lttng control through socket commands | |
298 | * | |
299 | * @objd: the object descriptor | |
300 | * @cmd: the command | |
301 | * @arg: command arg | |
ef9ff354 | 302 | * @uargs: UST arguments (internal) |
f4681817 MD |
303 | * |
304 | * This descriptor implements lttng commands: | |
305 | * LTTNG_UST_SESSION | |
306 | * Returns a LTTng trace session object descriptor | |
307 | * LTTNG_UST_TRACER_VERSION | |
308 | * Returns the LTTng kernel tracer version | |
309 | * LTTNG_UST_TRACEPOINT_LIST | |
310 | * Returns a file descriptor listing available tracepoints | |
06d4f27e MD |
311 | * LTTNG_UST_TRACEPOINT_FIELD_LIST |
312 | * Returns a file descriptor listing available tracepoint fields | |
f4681817 MD |
313 | * LTTNG_UST_WAIT_QUIESCENT |
314 | * Returns after all previously running probes have completed | |
315 | * | |
316 | * The returned session will be deleted when its file descriptor is closed. | |
317 | */ | |
318 | static | |
ef9ff354 MD |
319 | long lttng_cmd(int objd, unsigned int cmd, unsigned long arg, |
320 | union ust_args *uargs) | |
f4681817 MD |
321 | { |
322 | switch (cmd) { | |
323 | case LTTNG_UST_SESSION: | |
324 | return lttng_abi_create_session(); | |
325 | case LTTNG_UST_TRACER_VERSION: | |
326 | return lttng_abi_tracer_version(objd, | |
327 | (struct lttng_ust_tracer_version *) arg); | |
328 | case LTTNG_UST_TRACEPOINT_LIST: | |
51489cad | 329 | return lttng_abi_tracepoint_list(); |
06d4f27e MD |
330 | case LTTNG_UST_TRACEPOINT_FIELD_LIST: |
331 | return lttng_abi_tracepoint_field_list(); | |
f4681817 MD |
332 | case LTTNG_UST_WAIT_QUIESCENT: |
333 | synchronize_trace(); | |
334 | return 0; | |
335 | default: | |
336 | return -EINVAL; | |
337 | } | |
338 | } | |
339 | ||
b61ce3b2 | 340 | static const struct lttng_ust_objd_ops lttng_ops = { |
f4681817 MD |
341 | .cmd = lttng_cmd, |
342 | }; | |
343 | ||
344 | /* | |
345 | * We tolerate no failure in this function (if one happens, we print a dmesg | |
346 | * error, but cannot return any error, because the channel information is | |
347 | * invariant. | |
348 | */ | |
349 | static | |
350 | void lttng_metadata_create_events(int channel_objd) | |
351 | { | |
352 | struct ltt_channel *channel = objd_private(channel_objd); | |
353 | static struct lttng_ust_event metadata_params = { | |
354 | .instrumentation = LTTNG_UST_TRACEPOINT, | |
a4ada9b8 | 355 | .name = "lttng_ust:metadata", |
457a6b58 MD |
356 | .loglevel_type = LTTNG_UST_LOGLEVEL_ALL, |
357 | .loglevel = TRACE_DEFAULT, | |
f4681817 MD |
358 | }; |
359 | struct ltt_event *event; | |
576599a0 | 360 | int ret; |
f4681817 MD |
361 | |
362 | /* | |
363 | * We tolerate no failure path after event creation. It will stay | |
364 | * invariant for the rest of the session. | |
365 | */ | |
2d78951a | 366 | ret = ltt_event_create(channel, &metadata_params, &event); |
576599a0 | 367 | if (ret < 0) { |
f4681817 MD |
368 | goto create_error; |
369 | } | |
370 | return; | |
371 | ||
372 | create_error: | |
373 | WARN_ON(1); | |
374 | return; /* not allowed to return error */ | |
375 | } | |
376 | ||
f4681817 MD |
377 | int lttng_abi_create_channel(int session_objd, |
378 | struct lttng_ust_channel *chan_param, | |
ef9ff354 MD |
379 | enum channel_type channel_type, |
380 | union ust_args *uargs) | |
f4681817 MD |
381 | { |
382 | struct ltt_session *session = objd_private(session_objd); | |
b61ce3b2 | 383 | const struct lttng_ust_objd_ops *ops; |
f4681817 MD |
384 | const char *transport_name; |
385 | struct ltt_channel *chan; | |
386 | int chan_objd; | |
387 | int ret = 0; | |
d028eddb | 388 | struct ltt_channel chan_priv_init; |
f4681817 | 389 | |
f4681817 MD |
390 | switch (channel_type) { |
391 | case PER_CPU_CHANNEL: | |
392 | if (chan_param->output == LTTNG_UST_MMAP) { | |
393 | transport_name = chan_param->overwrite ? | |
394 | "relay-overwrite-mmap" : "relay-discard-mmap"; | |
395 | } else { | |
396 | return -EINVAL; | |
397 | } | |
398 | ops = <tng_channel_ops; | |
399 | break; | |
400 | case METADATA_CHANNEL: | |
401 | if (chan_param->output == LTTNG_UST_MMAP) | |
402 | transport_name = "relay-metadata-mmap"; | |
403 | else | |
404 | return -EINVAL; | |
405 | ops = <tng_metadata_ops; | |
406 | break; | |
407 | default: | |
408 | transport_name = "<unknown>"; | |
fe38d4af MD |
409 | return -EINVAL; |
410 | } | |
411 | chan_objd = objd_alloc(NULL, ops); | |
412 | if (chan_objd < 0) { | |
413 | ret = chan_objd; | |
414 | goto objd_error; | |
f4681817 | 415 | } |
d028eddb MD |
416 | memset(&chan_priv_init, 0, sizeof(chan_priv_init)); |
417 | /* Copy of session UUID for consumer (availability through shm) */ | |
418 | memcpy(chan_priv_init.uuid, session->uuid, sizeof(session->uuid)); | |
419 | ||
f4681817 MD |
420 | /* |
421 | * We tolerate no failure path after channel creation. It will stay | |
422 | * invariant for the rest of the session. | |
423 | */ | |
424 | chan = ltt_channel_create(session, transport_name, NULL, | |
425 | chan_param->subbuf_size, | |
426 | chan_param->num_subbuf, | |
427 | chan_param->switch_timer_interval, | |
193183fb | 428 | chan_param->read_timer_interval, |
ef9ff354 MD |
429 | &uargs->channel.shm_fd, |
430 | &uargs->channel.wait_fd, | |
431 | &uargs->channel.memory_map_size, | |
d028eddb | 432 | &chan_priv_init); |
f4681817 MD |
433 | if (!chan) { |
434 | ret = -EINVAL; | |
435 | goto chan_error; | |
436 | } | |
437 | objd_set_private(chan_objd, chan); | |
438 | chan->objd = chan_objd; | |
439 | if (channel_type == METADATA_CHANNEL) { | |
440 | session->metadata = chan; | |
441 | lttng_metadata_create_events(chan_objd); | |
442 | } | |
f4681817 MD |
443 | /* The channel created holds a reference on the session */ |
444 | objd_ref(session_objd); | |
445 | ||
446 | return chan_objd; | |
447 | ||
448 | chan_error: | |
1ea11eab MD |
449 | { |
450 | int err; | |
451 | ||
d4419b81 | 452 | err = lttng_ust_objd_unref(chan_objd); |
1ea11eab MD |
453 | assert(!err); |
454 | } | |
f4681817 MD |
455 | objd_error: |
456 | return ret; | |
457 | } | |
458 | ||
459 | /** | |
460 | * lttng_session_cmd - lttng session object command | |
461 | * | |
462 | * @obj: the object | |
463 | * @cmd: the command | |
464 | * @arg: command arg | |
ef9ff354 | 465 | * @uargs: UST arguments (internal) |
f4681817 MD |
466 | * |
467 | * This descriptor implements lttng commands: | |
468 | * LTTNG_UST_CHANNEL | |
469 | * Returns a LTTng channel object descriptor | |
470 | * LTTNG_UST_ENABLE | |
471 | * Enables tracing for a session (weak enable) | |
472 | * LTTNG_UST_DISABLE | |
473 | * Disables tracing for a session (strong disable) | |
474 | * LTTNG_UST_METADATA | |
475 | * Returns a LTTng metadata object descriptor | |
476 | * | |
477 | * The returned channel will be deleted when its file descriptor is closed. | |
478 | */ | |
479 | static | |
ef9ff354 MD |
480 | long lttng_session_cmd(int objd, unsigned int cmd, unsigned long arg, |
481 | union ust_args *uargs) | |
f4681817 MD |
482 | { |
483 | struct ltt_session *session = objd_private(objd); | |
484 | ||
485 | switch (cmd) { | |
486 | case LTTNG_UST_CHANNEL: | |
487 | return lttng_abi_create_channel(objd, | |
488 | (struct lttng_ust_channel *) arg, | |
ef9ff354 | 489 | PER_CPU_CHANNEL, uargs); |
f4681817 MD |
490 | case LTTNG_UST_SESSION_START: |
491 | case LTTNG_UST_ENABLE: | |
492 | return ltt_session_enable(session); | |
493 | case LTTNG_UST_SESSION_STOP: | |
494 | case LTTNG_UST_DISABLE: | |
495 | return ltt_session_disable(session); | |
496 | case LTTNG_UST_METADATA: | |
497 | return lttng_abi_create_channel(objd, | |
498 | (struct lttng_ust_channel *) arg, | |
ef9ff354 | 499 | METADATA_CHANNEL, uargs); |
f4681817 MD |
500 | default: |
501 | return -EINVAL; | |
502 | } | |
503 | } | |
504 | ||
505 | /* | |
506 | * Called when the last file reference is dropped. | |
507 | * | |
508 | * Big fat note: channels and events are invariant for the whole session after | |
509 | * their creation. So this session destruction also destroys all channel and | |
510 | * event structures specific to this session (they are not destroyed when their | |
511 | * individual file is released). | |
512 | */ | |
513 | static | |
1ea11eab | 514 | int lttng_release_session(int objd) |
f4681817 MD |
515 | { |
516 | struct ltt_session *session = objd_private(objd); | |
517 | ||
1ea11eab | 518 | if (session) { |
f4681817 | 519 | ltt_session_destroy(session); |
1ea11eab MD |
520 | return 0; |
521 | } else { | |
522 | return -EINVAL; | |
523 | } | |
f4681817 MD |
524 | } |
525 | ||
b61ce3b2 | 526 | static const struct lttng_ust_objd_ops lttng_session_ops = { |
1ea11eab | 527 | .release = lttng_release_session, |
f4681817 MD |
528 | .cmd = lttng_session_cmd, |
529 | }; | |
530 | ||
51489cad | 531 | static |
ef9ff354 MD |
532 | long lttng_tracepoint_list_cmd(int objd, unsigned int cmd, unsigned long arg, |
533 | union ust_args *uargs) | |
51489cad | 534 | { |
c8fcf224 | 535 | struct lttng_ust_tracepoint_list *list = objd_private(objd); |
cbef6901 MD |
536 | struct lttng_ust_tracepoint_iter *tp = |
537 | (struct lttng_ust_tracepoint_iter *) arg; | |
c8fcf224 | 538 | struct lttng_ust_tracepoint_iter *iter; |
51489cad MD |
539 | |
540 | switch (cmd) { | |
541 | case LTTNG_UST_TRACEPOINT_LIST_GET: | |
c8fcf224 MD |
542 | { |
543 | retry: | |
544 | iter = lttng_ust_tracepoint_list_get_iter_next(list); | |
545 | if (!iter) | |
b115631f | 546 | return -ENOENT; |
c8fcf224 MD |
547 | if (!strcmp(iter->name, "lttng_ust:metadata")) |
548 | goto retry; | |
549 | memcpy(tp, iter, sizeof(*tp)); | |
51489cad | 550 | return 0; |
c8fcf224 | 551 | } |
51489cad MD |
552 | default: |
553 | return -EINVAL; | |
554 | } | |
555 | } | |
556 | ||
557 | static | |
558 | int lttng_abi_tracepoint_list(void) | |
559 | { | |
560 | int list_objd, ret; | |
c8fcf224 | 561 | struct lttng_ust_tracepoint_list *list; |
51489cad MD |
562 | |
563 | list_objd = objd_alloc(NULL, <tng_tracepoint_list_ops); | |
564 | if (list_objd < 0) { | |
565 | ret = list_objd; | |
566 | goto objd_error; | |
567 | } | |
568 | list = zmalloc(sizeof(*list)); | |
569 | if (!list) { | |
570 | ret = -ENOMEM; | |
571 | goto alloc_error; | |
572 | } | |
573 | objd_set_private(list_objd, list); | |
574 | ||
c8fcf224 MD |
575 | /* populate list by walking on all registered probes. */ |
576 | ret = ltt_probes_get_event_list(list); | |
577 | if (ret) { | |
578 | goto list_error; | |
579 | } | |
51489cad MD |
580 | return list_objd; |
581 | ||
c8fcf224 MD |
582 | list_error: |
583 | free(list); | |
51489cad MD |
584 | alloc_error: |
585 | { | |
586 | int err; | |
587 | ||
588 | err = lttng_ust_objd_unref(list_objd); | |
589 | assert(!err); | |
590 | } | |
591 | objd_error: | |
592 | return ret; | |
593 | } | |
594 | ||
595 | static | |
596 | int lttng_release_tracepoint_list(int objd) | |
597 | { | |
c8fcf224 | 598 | struct lttng_ust_tracepoint_list *list = objd_private(objd); |
51489cad MD |
599 | |
600 | if (list) { | |
c8fcf224 | 601 | ltt_probes_prune_event_list(list); |
51489cad MD |
602 | free(list); |
603 | return 0; | |
604 | } else { | |
605 | return -EINVAL; | |
606 | } | |
607 | } | |
608 | ||
609 | static const struct lttng_ust_objd_ops lttng_tracepoint_list_ops = { | |
610 | .release = lttng_release_tracepoint_list, | |
611 | .cmd = lttng_tracepoint_list_cmd, | |
612 | }; | |
613 | ||
06d4f27e MD |
614 | static |
615 | long lttng_tracepoint_field_list_cmd(int objd, unsigned int cmd, | |
616 | unsigned long arg, union ust_args *uargs) | |
617 | { | |
618 | struct lttng_ust_field_list *list = objd_private(objd); | |
40003310 | 619 | struct lttng_ust_field_iter *tp = &uargs->field_list.entry; |
06d4f27e MD |
620 | struct lttng_ust_field_iter *iter; |
621 | ||
622 | switch (cmd) { | |
623 | case LTTNG_UST_TRACEPOINT_FIELD_LIST_GET: | |
624 | { | |
625 | retry: | |
626 | iter = lttng_ust_field_list_get_iter_next(list); | |
627 | if (!iter) | |
628 | return -ENOENT; | |
629 | if (!strcmp(iter->event_name, "lttng_ust:metadata")) | |
630 | goto retry; | |
631 | memcpy(tp, iter, sizeof(*tp)); | |
632 | return 0; | |
633 | } | |
634 | default: | |
635 | return -EINVAL; | |
636 | } | |
637 | } | |
638 | ||
639 | static | |
640 | int lttng_abi_tracepoint_field_list(void) | |
641 | { | |
642 | int list_objd, ret; | |
643 | struct lttng_ust_field_list *list; | |
644 | ||
645 | list_objd = objd_alloc(NULL, <tng_tracepoint_field_list_ops); | |
646 | if (list_objd < 0) { | |
647 | ret = list_objd; | |
648 | goto objd_error; | |
649 | } | |
650 | list = zmalloc(sizeof(*list)); | |
651 | if (!list) { | |
652 | ret = -ENOMEM; | |
653 | goto alloc_error; | |
654 | } | |
655 | objd_set_private(list_objd, list); | |
656 | ||
657 | /* populate list by walking on all registered probes. */ | |
658 | ret = ltt_probes_get_field_list(list); | |
659 | if (ret) { | |
660 | goto list_error; | |
661 | } | |
662 | return list_objd; | |
663 | ||
664 | list_error: | |
665 | free(list); | |
666 | alloc_error: | |
667 | { | |
668 | int err; | |
669 | ||
670 | err = lttng_ust_objd_unref(list_objd); | |
671 | assert(!err); | |
672 | } | |
673 | objd_error: | |
674 | return ret; | |
675 | } | |
676 | ||
677 | static | |
678 | int lttng_release_tracepoint_field_list(int objd) | |
679 | { | |
680 | struct lttng_ust_field_list *list = objd_private(objd); | |
681 | ||
682 | if (list) { | |
683 | ltt_probes_prune_field_list(list); | |
684 | free(list); | |
685 | return 0; | |
686 | } else { | |
687 | return -EINVAL; | |
688 | } | |
689 | } | |
690 | ||
691 | static const struct lttng_ust_objd_ops lttng_tracepoint_field_list_ops = { | |
692 | .release = lttng_release_tracepoint_field_list, | |
693 | .cmd = lttng_tracepoint_field_list_cmd, | |
694 | }; | |
695 | ||
381c0f1e | 696 | struct stream_priv_data { |
4cfec15c | 697 | struct lttng_ust_lib_ring_buffer *buf; |
381c0f1e MD |
698 | struct ltt_channel *ltt_chan; |
699 | }; | |
700 | ||
f4681817 | 701 | static |
ef9ff354 MD |
702 | int lttng_abi_open_stream(int channel_objd, struct lttng_ust_stream *info, |
703 | union ust_args *uargs) | |
f4681817 MD |
704 | { |
705 | struct ltt_channel *channel = objd_private(channel_objd); | |
4cfec15c | 706 | struct lttng_ust_lib_ring_buffer *buf; |
381c0f1e | 707 | struct stream_priv_data *priv; |
f4681817 MD |
708 | int stream_objd, ret; |
709 | ||
381c0f1e | 710 | buf = channel->ops->buffer_read_open(channel->chan, channel->handle, |
ef9ff354 MD |
711 | &uargs->stream.shm_fd, |
712 | &uargs->stream.wait_fd, | |
713 | &uargs->stream.memory_map_size); | |
f4681817 MD |
714 | if (!buf) |
715 | return -ENOENT; | |
716 | ||
381c0f1e MD |
717 | priv = zmalloc(sizeof(*priv)); |
718 | if (!priv) { | |
719 | ret = -ENOMEM; | |
720 | goto alloc_error; | |
721 | } | |
722 | priv->buf = buf; | |
723 | priv->ltt_chan = channel; | |
724 | stream_objd = objd_alloc(priv, &lib_ring_buffer_objd_ops); | |
f4681817 MD |
725 | if (stream_objd < 0) { |
726 | ret = stream_objd; | |
727 | goto objd_error; | |
728 | } | |
381c0f1e MD |
729 | /* Hold a reference on the channel object descriptor */ |
730 | objd_ref(channel_objd); | |
f4681817 MD |
731 | return stream_objd; |
732 | ||
733 | objd_error: | |
381c0f1e MD |
734 | free(priv); |
735 | alloc_error: | |
736 | channel->ops->buffer_read_close(buf, channel->handle); | |
f4681817 MD |
737 | return ret; |
738 | } | |
f4681817 MD |
739 | |
740 | static | |
741 | int lttng_abi_create_event(int channel_objd, | |
742 | struct lttng_ust_event *event_param) | |
743 | { | |
744 | struct ltt_channel *channel = objd_private(channel_objd); | |
745 | struct ltt_event *event; | |
746 | int event_objd, ret; | |
747 | ||
748 | event_param->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
749 | event_objd = objd_alloc(NULL, <tng_event_ops); | |
750 | if (event_objd < 0) { | |
751 | ret = event_objd; | |
752 | goto objd_error; | |
753 | } | |
754 | /* | |
755 | * We tolerate no failure path after event creation. It will stay | |
756 | * invariant for the rest of the session. | |
757 | */ | |
2d78951a | 758 | ret = ltt_event_create(channel, event_param, &event); |
576599a0 | 759 | if (ret < 0) { |
f4681817 MD |
760 | goto event_error; |
761 | } | |
762 | objd_set_private(event_objd, event); | |
763 | /* The event holds a reference on the channel */ | |
764 | objd_ref(channel_objd); | |
765 | return event_objd; | |
766 | ||
767 | event_error: | |
1ea11eab MD |
768 | { |
769 | int err; | |
770 | ||
d4419b81 | 771 | err = lttng_ust_objd_unref(event_objd); |
1ea11eab MD |
772 | assert(!err); |
773 | } | |
f4681817 MD |
774 | objd_error: |
775 | return ret; | |
776 | } | |
777 | ||
e6c12e3d MD |
778 | static |
779 | int lttng_abi_create_wildcard(int channel_objd, | |
780 | struct lttng_ust_event *event_param) | |
781 | { | |
782 | struct ltt_channel *channel = objd_private(channel_objd); | |
783 | struct session_wildcard *wildcard; | |
784 | int wildcard_objd, ret; | |
785 | ||
786 | event_param->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
787 | wildcard_objd = objd_alloc(NULL, <tng_wildcard_ops); | |
788 | if (wildcard_objd < 0) { | |
789 | ret = wildcard_objd; | |
790 | goto objd_error; | |
791 | } | |
792 | /* | |
793 | * We tolerate no failure path after wildcard creation. It will | |
794 | * stay invariant for the rest of the session. | |
795 | */ | |
796 | ret = ltt_wildcard_create(channel, event_param, &wildcard); | |
797 | if (ret < 0) { | |
798 | goto wildcard_error; | |
799 | } | |
800 | objd_set_private(wildcard_objd, wildcard); | |
801 | /* The wildcard holds a reference on the channel */ | |
802 | objd_ref(channel_objd); | |
803 | return wildcard_objd; | |
804 | ||
805 | wildcard_error: | |
806 | { | |
807 | int err; | |
808 | ||
809 | err = lttng_ust_objd_unref(wildcard_objd); | |
810 | assert(!err); | |
811 | } | |
812 | objd_error: | |
813 | return ret; | |
814 | } | |
815 | ||
f4681817 MD |
816 | /** |
817 | * lttng_channel_cmd - lttng control through object descriptors | |
818 | * | |
819 | * @objd: the object descriptor | |
820 | * @cmd: the command | |
821 | * @arg: command arg | |
ef9ff354 | 822 | * @uargs: UST arguments (internal) |
f4681817 MD |
823 | * |
824 | * This object descriptor implements lttng commands: | |
825 | * LTTNG_UST_STREAM | |
826 | * Returns an event stream object descriptor or failure. | |
827 | * (typically, one event stream records events from one CPU) | |
828 | * LTTNG_UST_EVENT | |
829 | * Returns an event object descriptor or failure. | |
830 | * LTTNG_UST_CONTEXT | |
831 | * Prepend a context field to each event in the channel | |
832 | * LTTNG_UST_ENABLE | |
833 | * Enable recording for events in this channel (weak enable) | |
834 | * LTTNG_UST_DISABLE | |
835 | * Disable recording for events in this channel (strong disable) | |
836 | * | |
837 | * Channel and event file descriptors also hold a reference on the session. | |
838 | */ | |
839 | static | |
ef9ff354 MD |
840 | long lttng_channel_cmd(int objd, unsigned int cmd, unsigned long arg, |
841 | union ust_args *uargs) | |
f4681817 MD |
842 | { |
843 | struct ltt_channel *channel = objd_private(objd); | |
844 | ||
845 | switch (cmd) { | |
846 | case LTTNG_UST_STREAM: | |
381c0f1e MD |
847 | { |
848 | struct lttng_ust_stream *stream; | |
849 | ||
850 | stream = (struct lttng_ust_stream *) arg; | |
851 | /* stream used as output */ | |
ef9ff354 | 852 | return lttng_abi_open_stream(objd, stream, uargs); |
381c0f1e | 853 | } |
f4681817 | 854 | case LTTNG_UST_EVENT: |
1f18504e MD |
855 | { |
856 | struct lttng_ust_event *event_param = | |
857 | (struct lttng_ust_event *) arg; | |
6b0e60f1 MD |
858 | if (event_param->name[strlen(event_param->name) - 1] == '*') { |
859 | /* If ends with wildcard, create wildcard. */ | |
860 | return lttng_abi_create_wildcard(objd, event_param); | |
1f18504e | 861 | } else { |
6b0e60f1 | 862 | return lttng_abi_create_event(objd, event_param); |
1f18504e MD |
863 | } |
864 | } | |
f4681817 MD |
865 | case LTTNG_UST_CONTEXT: |
866 | return lttng_abi_add_context(objd, | |
867 | (struct lttng_ust_context *) arg, | |
868 | &channel->ctx, channel->session); | |
869 | case LTTNG_UST_ENABLE: | |
870 | return ltt_channel_enable(channel); | |
871 | case LTTNG_UST_DISABLE: | |
872 | return ltt_channel_disable(channel); | |
43d330a4 MD |
873 | case LTTNG_UST_FLUSH_BUFFER: |
874 | return channel->ops->flush_buffer(channel->chan, channel->handle); | |
f4681817 MD |
875 | default: |
876 | return -EINVAL; | |
877 | } | |
878 | } | |
879 | ||
880 | /** | |
881 | * lttng_metadata_cmd - lttng control through object descriptors | |
882 | * | |
883 | * @objd: the object descriptor | |
884 | * @cmd: the command | |
885 | * @arg: command arg | |
ef9ff354 | 886 | * @uargs: UST arguments (internal) |
f4681817 MD |
887 | * |
888 | * This object descriptor implements lttng commands: | |
889 | * LTTNG_UST_STREAM | |
890 | * Returns an event stream file descriptor or failure. | |
891 | * | |
892 | * Channel and event file descriptors also hold a reference on the session. | |
893 | */ | |
894 | static | |
ef9ff354 MD |
895 | long lttng_metadata_cmd(int objd, unsigned int cmd, unsigned long arg, |
896 | union ust_args *uargs) | |
f4681817 | 897 | { |
43861eab MD |
898 | struct ltt_channel *channel = objd_private(objd); |
899 | ||
f4681817 MD |
900 | switch (cmd) { |
901 | case LTTNG_UST_STREAM: | |
381c0f1e MD |
902 | { |
903 | struct lttng_ust_stream *stream; | |
904 | ||
905 | stream = (struct lttng_ust_stream *) arg; | |
906 | /* stream used as output */ | |
ef9ff354 | 907 | return lttng_abi_open_stream(objd, stream, uargs); |
381c0f1e | 908 | } |
43d330a4 MD |
909 | case LTTNG_UST_FLUSH_BUFFER: |
910 | return channel->ops->flush_buffer(channel->chan, channel->handle); | |
f4681817 MD |
911 | default: |
912 | return -EINVAL; | |
913 | } | |
914 | } | |
915 | ||
916 | #if 0 | |
917 | /** | |
918 | * lttng_channel_poll - lttng stream addition/removal monitoring | |
919 | * | |
920 | * @file: the file | |
921 | * @wait: poll table | |
922 | */ | |
923 | unsigned int lttng_channel_poll(struct file *file, poll_table *wait) | |
924 | { | |
925 | struct ltt_channel *channel = file->private_data; | |
926 | unsigned int mask = 0; | |
927 | ||
928 | if (file->f_mode & FMODE_READ) { | |
929 | poll_wait_set_exclusive(wait); | |
930 | poll_wait(file, channel->ops->get_hp_wait_queue(channel->chan), | |
931 | wait); | |
932 | ||
933 | if (channel->ops->is_disabled(channel->chan)) | |
934 | return POLLERR; | |
935 | if (channel->ops->is_finalized(channel->chan)) | |
936 | return POLLHUP; | |
937 | if (channel->ops->buffer_has_read_closed_stream(channel->chan)) | |
938 | return POLLIN | POLLRDNORM; | |
939 | return 0; | |
940 | } | |
941 | return mask; | |
942 | ||
943 | } | |
944 | #endif //0 | |
945 | ||
946 | static | |
947 | int lttng_channel_release(int objd) | |
948 | { | |
949 | struct ltt_channel *channel = objd_private(objd); | |
950 | ||
951 | if (channel) | |
d4419b81 | 952 | return lttng_ust_objd_unref(channel->session->objd); |
f4681817 MD |
953 | return 0; |
954 | } | |
955 | ||
b61ce3b2 | 956 | static const struct lttng_ust_objd_ops lttng_channel_ops = { |
f4681817 MD |
957 | .release = lttng_channel_release, |
958 | //.poll = lttng_channel_poll, | |
959 | .cmd = lttng_channel_cmd, | |
960 | }; | |
961 | ||
b61ce3b2 | 962 | static const struct lttng_ust_objd_ops lttng_metadata_ops = { |
f4681817 MD |
963 | .release = lttng_channel_release, |
964 | .cmd = lttng_metadata_cmd, | |
965 | }; | |
966 | ||
381c0f1e MD |
967 | /** |
968 | * lttng_rb_cmd - lttng ring buffer control through object descriptors | |
969 | * | |
970 | * @objd: the object descriptor | |
971 | * @cmd: the command | |
972 | * @arg: command arg | |
ef9ff354 | 973 | * @uargs: UST arguments (internal) |
381c0f1e MD |
974 | * |
975 | * This object descriptor implements lttng commands: | |
976 | * (None for now. Access is done directly though shm.) | |
381c0f1e MD |
977 | */ |
978 | static | |
ef9ff354 MD |
979 | long lttng_rb_cmd(int objd, unsigned int cmd, unsigned long arg, |
980 | union ust_args *uargs) | |
381c0f1e | 981 | { |
381c0f1e MD |
982 | switch (cmd) { |
983 | default: | |
984 | return -EINVAL; | |
985 | } | |
986 | } | |
987 | ||
988 | static | |
989 | int lttng_rb_release(int objd) | |
990 | { | |
991 | struct stream_priv_data *priv = objd_private(objd); | |
4cfec15c | 992 | struct lttng_ust_lib_ring_buffer *buf; |
381c0f1e MD |
993 | struct ltt_channel *channel; |
994 | ||
995 | if (priv) { | |
996 | buf = priv->buf; | |
997 | channel = priv->ltt_chan; | |
998 | free(priv); | |
45e9e699 MD |
999 | /* |
1000 | * If we are at ABI exit, we don't want to close the | |
1001 | * buffer opened for read: it is being shared between | |
1002 | * the parent and child (right after fork), and we don't | |
1003 | * want the child to close it for the parent. For a real | |
1004 | * exit, we don't care about marking it as closed, as | |
1005 | * the consumer daemon (if there is one) will do fine | |
1006 | * even if we don't mark it as "closed" for reading on | |
1007 | * our side. | |
1008 | * We only mark it as closed if it is being explicitely | |
1009 | * released by the session daemon with an explicit | |
1010 | * release command. | |
1011 | */ | |
1012 | if (!lttng_ust_abi_close_in_progress) | |
1013 | channel->ops->buffer_read_close(buf, channel->handle); | |
381c0f1e | 1014 | |
d4419b81 | 1015 | return lttng_ust_objd_unref(channel->objd); |
381c0f1e MD |
1016 | } |
1017 | return 0; | |
1018 | } | |
1019 | ||
b61ce3b2 | 1020 | static const struct lttng_ust_objd_ops lib_ring_buffer_objd_ops = { |
381c0f1e MD |
1021 | .release = lttng_rb_release, |
1022 | .cmd = lttng_rb_cmd, | |
1023 | }; | |
1024 | ||
f4681817 MD |
1025 | /** |
1026 | * lttng_event_cmd - lttng control through object descriptors | |
1027 | * | |
1028 | * @objd: the object descriptor | |
1029 | * @cmd: the command | |
1030 | * @arg: command arg | |
ef9ff354 | 1031 | * @uargs: UST arguments (internal) |
f4681817 MD |
1032 | * |
1033 | * This object descriptor implements lttng commands: | |
1034 | * LTTNG_UST_CONTEXT | |
1035 | * Prepend a context field to each record of this event | |
1036 | * LTTNG_UST_ENABLE | |
1037 | * Enable recording for this event (weak enable) | |
1038 | * LTTNG_UST_DISABLE | |
1039 | * Disable recording for this event (strong disable) | |
2d78951a MD |
1040 | * LTTNG_UST_FILTER |
1041 | * Attach a filter to an event. | |
f4681817 MD |
1042 | */ |
1043 | static | |
ef9ff354 MD |
1044 | long lttng_event_cmd(int objd, unsigned int cmd, unsigned long arg, |
1045 | union ust_args *uargs) | |
f4681817 MD |
1046 | { |
1047 | struct ltt_event *event = objd_private(objd); | |
1048 | ||
1049 | switch (cmd) { | |
1050 | case LTTNG_UST_CONTEXT: | |
1051 | return lttng_abi_add_context(objd, | |
1052 | (struct lttng_ust_context *) arg, | |
1053 | &event->ctx, event->chan->session); | |
1054 | case LTTNG_UST_ENABLE: | |
1055 | return ltt_event_enable(event); | |
1056 | case LTTNG_UST_DISABLE: | |
1057 | return ltt_event_disable(event); | |
2d78951a MD |
1058 | case LTTNG_UST_FILTER: |
1059 | { | |
1060 | int ret; | |
1061 | ret = lttng_filter_event_attach_bytecode(event, | |
1062 | (struct lttng_ust_filter_bytecode *) arg); | |
1063 | if (ret) | |
1064 | return ret; | |
1065 | lttng_filter_event_link_bytecode(event, | |
1066 | event->filter_bytecode); | |
1067 | return 0; | |
1068 | } | |
f4681817 MD |
1069 | default: |
1070 | return -EINVAL; | |
1071 | } | |
1072 | } | |
1073 | ||
1074 | static | |
1075 | int lttng_event_release(int objd) | |
1076 | { | |
1077 | struct ltt_event *event = objd_private(objd); | |
1078 | ||
1079 | if (event) | |
d4419b81 | 1080 | return lttng_ust_objd_unref(event->chan->objd); |
f4681817 MD |
1081 | return 0; |
1082 | } | |
1083 | ||
1084 | /* TODO: filter control ioctl */ | |
b61ce3b2 | 1085 | static const struct lttng_ust_objd_ops lttng_event_ops = { |
f4681817 MD |
1086 | .release = lttng_event_release, |
1087 | .cmd = lttng_event_cmd, | |
1088 | }; | |
1089 | ||
e6c12e3d MD |
1090 | /** |
1091 | * lttng_wildcard_cmd - lttng control through object descriptors | |
1092 | * | |
1093 | * @objd: the object descriptor | |
1094 | * @cmd: the command | |
1095 | * @arg: command arg | |
ef9ff354 | 1096 | * @uargs: UST arguments (internal) |
e6c12e3d MD |
1097 | * |
1098 | * This object descriptor implements lttng commands: | |
1099 | * LTTNG_UST_CONTEXT | |
1100 | * Prepend a context field to each record of events of this | |
1101 | * wildcard. | |
1102 | * LTTNG_UST_ENABLE | |
1103 | * Enable recording for these wildcard events (weak enable) | |
1104 | * LTTNG_UST_DISABLE | |
1105 | * Disable recording for these wildcard events (strong disable) | |
2d78951a MD |
1106 | * LTTNG_UST_FILTER |
1107 | * Attach a filter to a wildcard. | |
e6c12e3d MD |
1108 | */ |
1109 | static | |
ef9ff354 MD |
1110 | long lttng_wildcard_cmd(int objd, unsigned int cmd, unsigned long arg, |
1111 | union ust_args *uargs) | |
e6c12e3d MD |
1112 | { |
1113 | struct session_wildcard *wildcard = objd_private(objd); | |
1114 | ||
1115 | switch (cmd) { | |
1116 | case LTTNG_UST_CONTEXT: | |
1117 | return -ENOSYS; /* not implemented yet */ | |
1118 | #if 0 | |
1119 | return lttng_abi_add_context(objd, | |
1120 | (struct lttng_ust_context *) arg, | |
1121 | &wildcard->ctx, wildcard->chan->session); | |
1122 | #endif | |
1123 | case LTTNG_UST_ENABLE: | |
1124 | return ltt_wildcard_enable(wildcard); | |
1125 | case LTTNG_UST_DISABLE: | |
1126 | return ltt_wildcard_disable(wildcard); | |
2d78951a MD |
1127 | case LTTNG_UST_FILTER: |
1128 | { | |
1129 | int ret; | |
1130 | ||
1131 | ret = lttng_filter_wildcard_attach_bytecode(wildcard, | |
1132 | (struct lttng_ust_filter_bytecode *) arg); | |
1133 | if (ret) | |
1134 | return ret; | |
1135 | lttng_filter_wildcard_link_bytecode(wildcard); | |
1136 | return 0; | |
1137 | } | |
e6c12e3d MD |
1138 | default: |
1139 | return -EINVAL; | |
1140 | } | |
1141 | } | |
1142 | ||
1143 | static | |
1144 | int lttng_wildcard_release(int objd) | |
1145 | { | |
1146 | struct session_wildcard *wildcard = objd_private(objd); | |
1147 | ||
1148 | if (wildcard) | |
1149 | return lttng_ust_objd_unref(wildcard->chan->objd); | |
1150 | return 0; | |
1151 | } | |
1152 | ||
1153 | /* TODO: filter control ioctl */ | |
1154 | static const struct lttng_ust_objd_ops lttng_wildcard_ops = { | |
1155 | .release = lttng_wildcard_release, | |
1156 | .cmd = lttng_wildcard_cmd, | |
1157 | }; | |
1158 | ||
b35d179d | 1159 | void lttng_ust_abi_exit(void) |
f4681817 | 1160 | { |
45e9e699 | 1161 | lttng_ust_abi_close_in_progress = 1; |
f4681817 | 1162 | objd_table_destroy(); |
45e9e699 | 1163 | lttng_ust_abi_close_in_progress = 0; |
f4681817 | 1164 | } |