Commit | Line | Data |
---|---|---|
57773204 | 1 | /* |
c0c0989a | 2 | * SPDX-License-Identifier: GPL-2.0-only |
57773204 | 3 | * |
c0c0989a MJ |
4 | * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca> |
5 | * Copyright (C) 2011-2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
57773204 MD |
6 | */ |
7 | ||
fb31eb73 | 8 | #include <stdint.h> |
57773204 | 9 | #include <string.h> |
fb31eb73 | 10 | #include <sys/mman.h> |
4e79769f | 11 | #include <unistd.h> |
a834901f MD |
12 | #include <sys/types.h> |
13 | #include <sys/socket.h> | |
fb31eb73 | 14 | |
c62a3816 | 15 | #include <lttng/ust-config.h> |
4318ae1b MD |
16 | #include <lttng/ust-ctl.h> |
17 | #include <lttng/ust-abi.h> | |
3208818b | 18 | #include <lttng/ust-endian.h> |
fca97dfd | 19 | #include <lttng/ust-common.h> |
bb7ad29d | 20 | |
9d315d6d MJ |
21 | #include "common/logging.h" |
22 | #include "common/ustcomm.h" | |
23 | #include "common/macros.h" | |
24 | #include "common/align.h" | |
57773204 | 25 | |
e4db8f98 MJ |
26 | #include "common/ringbuffer/backend.h" |
27 | #include "common/ringbuffer/frontend.h" | |
36c52fff | 28 | #include "common/events.h" |
6bd9392e | 29 | #include "common/wait.h" |
8cd08025 | 30 | #include "common/ringbuffer-clients/clients.h" |
910dcd72 | 31 | #include "common/getenv.h" |
8cd08025 MJ |
32 | #include "common/tracer.h" |
33 | #include "common/counter-clients/clients.h" | |
c80497fe | 34 | |
74cc1f59 | 35 | #include "common/smp.h" |
cdff92e0 | 36 | #include "common/counter/counter.h" |
ebabbf58 | 37 | |
c9023c93 MD |
38 | /* |
39 | * Number of milliseconds to retry before failing metadata writes on | |
40 | * buffer full condition. (10 seconds) | |
41 | */ | |
42 | #define LTTNG_METADATA_TIMEOUT_MSEC 10000 | |
57773204 | 43 | |
74d81a6c MD |
44 | /* |
45 | * Channel representation within consumer. | |
46 | */ | |
249cffb5 | 47 | struct lttng_ust_ctl_consumer_channel { |
e7bc0ef6 | 48 | struct lttng_ust_channel_buffer *chan; /* lttng channel buffers */ |
6b120308 | 49 | |
74d81a6c | 50 | /* initial attributes */ |
249cffb5 | 51 | struct lttng_ust_ctl_consumer_channel_attr attr; |
ff0f5728 MD |
52 | int wait_fd; /* monitor close() */ |
53 | int wakeup_fd; /* monitor close() */ | |
74d81a6c MD |
54 | }; |
55 | ||
56 | /* | |
57 | * Stream representation within consumer. | |
58 | */ | |
249cffb5 | 59 | struct lttng_ust_ctl_consumer_stream { |
b5457df5 | 60 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 61 | struct lttng_ust_ctl_consumer_channel *chan; |
74d81a6c MD |
62 | int shm_fd, wait_fd, wakeup_fd; |
63 | int cpu; | |
64 | uint64_t memory_map_size; | |
65 | }; | |
66 | ||
249cffb5 MJ |
67 | #define LTTNG_UST_CTL_COUNTER_ATTR_DIMENSION_MAX 8 |
68 | struct lttng_ust_ctl_counter_attr { | |
69 | enum lttng_ust_ctl_counter_arithmetic arithmetic; | |
70 | enum lttng_ust_ctl_counter_bitness bitness; | |
ebabbf58 MD |
71 | uint32_t nr_dimensions; |
72 | int64_t global_sum_step; | |
249cffb5 | 73 | struct lttng_ust_ctl_counter_dimension dimensions[LTTNG_UST_CTL_COUNTER_ATTR_DIMENSION_MAX]; |
81bc4972 | 74 | bool coalesce_hits; |
ebabbf58 MD |
75 | }; |
76 | ||
77 | /* | |
78 | * Counter representation within daemon. | |
79 | */ | |
249cffb5 | 80 | struct lttng_ust_ctl_daemon_counter { |
ebabbf58 MD |
81 | struct lib_counter *counter; |
82 | const struct lttng_counter_ops *ops; | |
249cffb5 | 83 | struct lttng_ust_ctl_counter_attr *attr; /* initial attributes */ |
ebabbf58 MD |
84 | }; |
85 | ||
249cffb5 | 86 | int lttng_ust_ctl_release_handle(int sock, int handle) |
2be0e72c MD |
87 | { |
88 | struct ustcomm_ust_msg lum; | |
89 | struct ustcomm_ust_reply lur; | |
2be0e72c | 90 | |
74d81a6c MD |
91 | if (sock < 0 || handle < 0) |
92 | return 0; | |
93 | memset(&lum, 0, sizeof(lum)); | |
94 | lum.handle = handle; | |
fd17d7ce | 95 | lum.cmd = LTTNG_UST_ABI_RELEASE; |
74d81a6c | 96 | return ustcomm_send_app_cmd(sock, &lum, &lur); |
2be0e72c | 97 | } |
74d81a6c | 98 | |
12388166 MD |
99 | /* |
100 | * If sock is negative, it means we don't have to notify the other side | |
101 | * (e.g. application has already vanished). | |
102 | */ | |
249cffb5 | 103 | int lttng_ust_ctl_release_object(int sock, struct lttng_ust_abi_object_data *data) |
57773204 | 104 | { |
57773204 MD |
105 | int ret; |
106 | ||
9bfc503d MD |
107 | if (!data) |
108 | return -EINVAL; | |
109 | ||
74d81a6c | 110 | switch (data->type) { |
fd17d7ce | 111 | case LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL: |
ff0f5728 MD |
112 | if (data->u.channel.wakeup_fd >= 0) { |
113 | ret = close(data->u.channel.wakeup_fd); | |
114 | if (ret < 0) { | |
115 | ret = -errno; | |
116 | return ret; | |
117 | } | |
dd6c697c | 118 | data->u.channel.wakeup_fd = -1; |
ff0f5728 | 119 | } |
74d81a6c | 120 | free(data->u.channel.data); |
dd6c697c | 121 | data->u.channel.data = NULL; |
74d81a6c | 122 | break; |
fd17d7ce | 123 | case LTTNG_UST_ABI_OBJECT_TYPE_STREAM: |
74d81a6c MD |
124 | if (data->u.stream.shm_fd >= 0) { |
125 | ret = close(data->u.stream.shm_fd); | |
126 | if (ret < 0) { | |
127 | ret = -errno; | |
128 | return ret; | |
129 | } | |
dd6c697c | 130 | data->u.stream.shm_fd = -1; |
d26228ae | 131 | } |
74d81a6c MD |
132 | if (data->u.stream.wakeup_fd >= 0) { |
133 | ret = close(data->u.stream.wakeup_fd); | |
134 | if (ret < 0) { | |
135 | ret = -errno; | |
136 | return ret; | |
137 | } | |
dd6c697c | 138 | data->u.stream.wakeup_fd = -1; |
d26228ae | 139 | } |
74d81a6c | 140 | break; |
fd17d7ce MD |
141 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT: |
142 | case LTTNG_UST_ABI_OBJECT_TYPE_CONTEXT: | |
143 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER_GROUP: | |
144 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER: | |
32ce8569 | 145 | break; |
fd17d7ce | 146 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER: |
ebabbf58 MD |
147 | free(data->u.counter.data); |
148 | data->u.counter.data = NULL; | |
149 | break; | |
fd17d7ce | 150 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL: |
ebabbf58 MD |
151 | if (data->u.counter_global.shm_fd >= 0) { |
152 | ret = close(data->u.counter_global.shm_fd); | |
153 | if (ret < 0) { | |
154 | ret = -errno; | |
155 | return ret; | |
156 | } | |
157 | data->u.counter_global.shm_fd = -1; | |
158 | } | |
159 | break; | |
fd17d7ce | 160 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU: |
ebabbf58 MD |
161 | if (data->u.counter_cpu.shm_fd >= 0) { |
162 | ret = close(data->u.counter_cpu.shm_fd); | |
163 | if (ret < 0) { | |
164 | ret = -errno; | |
165 | return ret; | |
166 | } | |
167 | data->u.counter_cpu.shm_fd = -1; | |
168 | } | |
169 | break; | |
74d81a6c MD |
170 | default: |
171 | assert(0); | |
d26228ae | 172 | } |
249cffb5 | 173 | return lttng_ust_ctl_release_handle(sock, data->handle); |
57773204 MD |
174 | } |
175 | ||
1c5e467e MD |
176 | /* |
177 | * Send registration done packet to the application. | |
178 | */ | |
249cffb5 | 179 | int lttng_ust_ctl_register_done(int sock) |
1c5e467e MD |
180 | { |
181 | struct ustcomm_ust_msg lum; | |
182 | struct ustcomm_ust_reply lur; | |
183 | int ret; | |
184 | ||
185 | DBG("Sending register done command to %d", sock); | |
186 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
187 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
188 | lum.cmd = LTTNG_UST_ABI_REGISTER_DONE; | |
1c5e467e MD |
189 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
190 | if (ret) | |
191 | return ret; | |
1c5e467e | 192 | return 0; |
1c5e467e MD |
193 | } |
194 | ||
57773204 MD |
195 | /* |
196 | * returns session handle. | |
197 | */ | |
249cffb5 | 198 | int lttng_ust_ctl_create_session(int sock) |
57773204 MD |
199 | { |
200 | struct ustcomm_ust_msg lum; | |
201 | struct ustcomm_ust_reply lur; | |
202 | int ret, session_handle; | |
203 | ||
204 | /* Create session */ | |
205 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
206 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
207 | lum.cmd = LTTNG_UST_ABI_SESSION; | |
57773204 MD |
208 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
209 | if (ret) | |
210 | return ret; | |
211 | session_handle = lur.ret_val; | |
212 | DBG("received session handle %u", session_handle); | |
213 | return session_handle; | |
214 | } | |
215 | ||
249cffb5 | 216 | int lttng_ust_ctl_create_event(int sock, struct lttng_ust_abi_event *ev, |
fd17d7ce MD |
217 | struct lttng_ust_abi_object_data *channel_data, |
218 | struct lttng_ust_abi_object_data **_event_data) | |
57773204 MD |
219 | { |
220 | struct ustcomm_ust_msg lum; | |
221 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 222 | struct lttng_ust_abi_object_data *event_data; |
57773204 MD |
223 | int ret; |
224 | ||
9bfc503d MD |
225 | if (!channel_data || !_event_data) |
226 | return -EINVAL; | |
227 | ||
74d81a6c | 228 | event_data = zmalloc(sizeof(*event_data)); |
57773204 MD |
229 | if (!event_data) |
230 | return -ENOMEM; | |
fd17d7ce | 231 | event_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT; |
57773204 MD |
232 | memset(&lum, 0, sizeof(lum)); |
233 | lum.handle = channel_data->handle; | |
fd17d7ce | 234 | lum.cmd = LTTNG_UST_ABI_EVENT; |
57773204 | 235 | strncpy(lum.u.event.name, ev->name, |
fd17d7ce | 236 | LTTNG_UST_ABI_SYM_NAME_LEN); |
57773204 | 237 | lum.u.event.instrumentation = ev->instrumentation; |
457a6b58 MD |
238 | lum.u.event.loglevel_type = ev->loglevel_type; |
239 | lum.u.event.loglevel = ev->loglevel; | |
57773204 MD |
240 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
241 | if (ret) { | |
242 | free(event_data); | |
243 | return ret; | |
244 | } | |
245 | event_data->handle = lur.ret_val; | |
246 | DBG("received event handle %u", event_data->handle); | |
247 | *_event_data = event_data; | |
248 | return 0; | |
249 | } | |
250 | ||
249cffb5 | 251 | int lttng_ust_ctl_add_context(int sock, struct lttng_ust_context_attr *ctx, |
fd17d7ce MD |
252 | struct lttng_ust_abi_object_data *obj_data, |
253 | struct lttng_ust_abi_object_data **_context_data) | |
57773204 MD |
254 | { |
255 | struct ustcomm_ust_msg lum; | |
256 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 257 | struct lttng_ust_abi_object_data *context_data = NULL; |
53f0df51 JG |
258 | char *buf = NULL; |
259 | size_t len; | |
57773204 MD |
260 | int ret; |
261 | ||
53f0df51 JG |
262 | if (!obj_data || !_context_data) { |
263 | ret = -EINVAL; | |
264 | goto end; | |
265 | } | |
9bfc503d | 266 | |
74d81a6c | 267 | context_data = zmalloc(sizeof(*context_data)); |
53f0df51 JG |
268 | if (!context_data) { |
269 | ret = -ENOMEM; | |
270 | goto end; | |
271 | } | |
fd17d7ce | 272 | context_data->type = LTTNG_UST_ABI_OBJECT_TYPE_CONTEXT; |
57773204 | 273 | memset(&lum, 0, sizeof(lum)); |
3039d8ed | 274 | lum.handle = obj_data->handle; |
fd17d7ce | 275 | lum.cmd = LTTNG_UST_ABI_CONTEXT; |
53f0df51 JG |
276 | |
277 | lum.u.context.ctx = ctx->ctx; | |
278 | switch (ctx->ctx) { | |
fd17d7ce | 279 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
53f0df51 JG |
280 | lum.u.context.u.perf_counter = ctx->u.perf_counter; |
281 | break; | |
fd17d7ce | 282 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
53f0df51 JG |
283 | { |
284 | size_t provider_name_len = strlen( | |
285 | ctx->u.app_ctx.provider_name) + 1; | |
286 | size_t ctx_name_len = strlen(ctx->u.app_ctx.ctx_name) + 1; | |
287 | ||
288 | lum.u.context.u.app_ctx.provider_name_len = provider_name_len; | |
289 | lum.u.context.u.app_ctx.ctx_name_len = ctx_name_len; | |
290 | ||
291 | len = provider_name_len + ctx_name_len; | |
292 | buf = zmalloc(len); | |
293 | if (!buf) { | |
294 | ret = -ENOMEM; | |
295 | goto end; | |
296 | } | |
297 | memcpy(buf, ctx->u.app_ctx.provider_name, | |
298 | provider_name_len); | |
299 | memcpy(buf + provider_name_len, ctx->u.app_ctx.ctx_name, | |
300 | ctx_name_len); | |
301 | break; | |
302 | } | |
303 | default: | |
304 | break; | |
305 | } | |
306 | ret = ustcomm_send_app_msg(sock, &lum); | |
307 | if (ret) | |
308 | goto end; | |
309 | if (buf) { | |
310 | /* send var len ctx_name */ | |
311 | ret = ustcomm_send_unix_sock(sock, buf, len); | |
312 | if (ret < 0) { | |
313 | goto end; | |
314 | } | |
315 | if (ret != len) { | |
316 | ret = -EINVAL; | |
317 | goto end; | |
318 | } | |
319 | } | |
320 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
321 | if (ret < 0) { | |
322 | goto end; | |
57773204 | 323 | } |
32ce8569 MD |
324 | context_data->handle = -1; |
325 | DBG("Context created successfully"); | |
57773204 | 326 | *_context_data = context_data; |
53f0df51 JG |
327 | context_data = NULL; |
328 | end: | |
329 | free(context_data); | |
330 | free(buf); | |
57773204 MD |
331 | return ret; |
332 | } | |
333 | ||
249cffb5 | 334 | int lttng_ust_ctl_set_filter(int sock, struct lttng_ust_abi_filter_bytecode *bytecode, |
fd17d7ce | 335 | struct lttng_ust_abi_object_data *obj_data) |
cd54f6d9 MD |
336 | { |
337 | struct ustcomm_ust_msg lum; | |
338 | struct ustcomm_ust_reply lur; | |
339 | int ret; | |
340 | ||
341 | if (!obj_data) | |
342 | return -EINVAL; | |
343 | ||
344 | memset(&lum, 0, sizeof(lum)); | |
345 | lum.handle = obj_data->handle; | |
fd17d7ce | 346 | lum.cmd = LTTNG_UST_ABI_FILTER; |
cd54f6d9 MD |
347 | lum.u.filter.data_size = bytecode->len; |
348 | lum.u.filter.reloc_offset = bytecode->reloc_offset; | |
e695af51 | 349 | lum.u.filter.seqnum = bytecode->seqnum; |
cd54f6d9 MD |
350 | |
351 | ret = ustcomm_send_app_msg(sock, &lum); | |
d37ecb3f FD |
352 | if (ret) |
353 | return ret; | |
354 | /* send var len bytecode */ | |
355 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
356 | bytecode->len); | |
357 | if (ret < 0) { | |
358 | return ret; | |
359 | } | |
360 | if (ret != bytecode->len) | |
361 | return -EINVAL; | |
362 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
363 | } | |
364 | ||
249cffb5 | 365 | int lttng_ust_ctl_set_capture(int sock, struct lttng_ust_abi_capture_bytecode *bytecode, |
fd17d7ce | 366 | struct lttng_ust_abi_object_data *obj_data) |
d37ecb3f FD |
367 | { |
368 | struct ustcomm_ust_msg lum; | |
369 | struct ustcomm_ust_reply lur; | |
370 | int ret; | |
371 | ||
372 | if (!obj_data) | |
373 | return -EINVAL; | |
374 | ||
375 | memset(&lum, 0, sizeof(lum)); | |
376 | lum.handle = obj_data->handle; | |
fd17d7ce | 377 | lum.cmd = LTTNG_UST_ABI_CAPTURE; |
d37ecb3f FD |
378 | lum.u.capture.data_size = bytecode->len; |
379 | lum.u.capture.reloc_offset = bytecode->reloc_offset; | |
380 | lum.u.capture.seqnum = bytecode->seqnum; | |
381 | ||
382 | ret = ustcomm_send_app_msg(sock, &lum); | |
cd54f6d9 MD |
383 | if (ret) |
384 | return ret; | |
cd54f6d9 MD |
385 | /* send var len bytecode */ |
386 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
387 | bytecode->len); | |
388 | if (ret < 0) { | |
389 | return ret; | |
390 | } | |
7bc53e94 MD |
391 | if (ret != bytecode->len) |
392 | return -EINVAL; | |
393 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
cd54f6d9 MD |
394 | } |
395 | ||
249cffb5 | 396 | int lttng_ust_ctl_set_exclusion(int sock, struct lttng_ust_abi_event_exclusion *exclusion, |
fd17d7ce | 397 | struct lttng_ust_abi_object_data *obj_data) |
da57c034 JI |
398 | { |
399 | struct ustcomm_ust_msg lum; | |
400 | struct ustcomm_ust_reply lur; | |
401 | int ret; | |
402 | ||
403 | if (!obj_data) { | |
404 | return -EINVAL; | |
405 | } | |
406 | ||
407 | memset(&lum, 0, sizeof(lum)); | |
408 | lum.handle = obj_data->handle; | |
fd17d7ce | 409 | lum.cmd = LTTNG_UST_ABI_EXCLUSION; |
da57c034 JI |
410 | lum.u.exclusion.count = exclusion->count; |
411 | ||
412 | ret = ustcomm_send_app_msg(sock, &lum); | |
413 | if (ret) { | |
414 | return ret; | |
415 | } | |
416 | ||
1628366f | 417 | /* send var len exclusion names */ |
da57c034 JI |
418 | ret = ustcomm_send_unix_sock(sock, |
419 | exclusion->names, | |
fd17d7ce | 420 | exclusion->count * LTTNG_UST_ABI_SYM_NAME_LEN); |
da57c034 JI |
421 | if (ret < 0) { |
422 | return ret; | |
423 | } | |
fd17d7ce | 424 | if (ret != exclusion->count * LTTNG_UST_ABI_SYM_NAME_LEN) { |
da57c034 JI |
425 | return -EINVAL; |
426 | } | |
427 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
428 | } | |
429 | ||
57773204 | 430 | /* Enable event, channel and session ioctl */ |
249cffb5 | 431 | int lttng_ust_ctl_enable(int sock, struct lttng_ust_abi_object_data *object) |
57773204 MD |
432 | { |
433 | struct ustcomm_ust_msg lum; | |
434 | struct ustcomm_ust_reply lur; | |
435 | int ret; | |
436 | ||
9bfc503d MD |
437 | if (!object) |
438 | return -EINVAL; | |
439 | ||
57773204 MD |
440 | memset(&lum, 0, sizeof(lum)); |
441 | lum.handle = object->handle; | |
fd17d7ce | 442 | lum.cmd = LTTNG_UST_ABI_ENABLE; |
57773204 MD |
443 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
444 | if (ret) | |
445 | return ret; | |
446 | DBG("enabled handle %u", object->handle); | |
447 | return 0; | |
448 | } | |
449 | ||
450 | /* Disable event, channel and session ioctl */ | |
249cffb5 | 451 | int lttng_ust_ctl_disable(int sock, struct lttng_ust_abi_object_data *object) |
57773204 MD |
452 | { |
453 | struct ustcomm_ust_msg lum; | |
454 | struct ustcomm_ust_reply lur; | |
455 | int ret; | |
456 | ||
9bfc503d MD |
457 | if (!object) |
458 | return -EINVAL; | |
459 | ||
57773204 MD |
460 | memset(&lum, 0, sizeof(lum)); |
461 | lum.handle = object->handle; | |
fd17d7ce | 462 | lum.cmd = LTTNG_UST_ABI_DISABLE; |
57773204 MD |
463 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
464 | if (ret) | |
465 | return ret; | |
466 | DBG("disable handle %u", object->handle); | |
467 | return 0; | |
468 | } | |
469 | ||
249cffb5 | 470 | int lttng_ust_ctl_start_session(int sock, int handle) |
57773204 | 471 | { |
fd17d7ce | 472 | struct lttng_ust_abi_object_data obj; |
4a6ca058 MD |
473 | |
474 | obj.handle = handle; | |
249cffb5 | 475 | return lttng_ust_ctl_enable(sock, &obj); |
57773204 MD |
476 | } |
477 | ||
249cffb5 | 478 | int lttng_ust_ctl_stop_session(int sock, int handle) |
57773204 | 479 | { |
fd17d7ce | 480 | struct lttng_ust_abi_object_data obj; |
4a6ca058 MD |
481 | |
482 | obj.handle = handle; | |
249cffb5 | 483 | return lttng_ust_ctl_disable(sock, &obj); |
57773204 MD |
484 | } |
485 | ||
249cffb5 | 486 | int lttng_ust_ctl_create_event_notifier_group(int sock, int pipe_fd, |
fd17d7ce | 487 | struct lttng_ust_abi_object_data **_event_notifier_group_data) |
d8d2416d | 488 | { |
fd17d7ce | 489 | struct lttng_ust_abi_object_data *event_notifier_group_data; |
d8d2416d FD |
490 | struct ustcomm_ust_msg lum; |
491 | struct ustcomm_ust_reply lur; | |
492 | ssize_t len; | |
493 | int ret; | |
494 | ||
495 | if (!_event_notifier_group_data) | |
496 | return -EINVAL; | |
497 | ||
498 | event_notifier_group_data = zmalloc(sizeof(*event_notifier_group_data)); | |
499 | if (!event_notifier_group_data) | |
500 | return -ENOMEM; | |
501 | ||
fd17d7ce | 502 | event_notifier_group_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER_GROUP; |
d8d2416d FD |
503 | |
504 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
505 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
506 | lum.cmd = LTTNG_UST_ABI_EVENT_NOTIFIER_GROUP_CREATE; | |
d8d2416d FD |
507 | |
508 | ret = ustcomm_send_app_msg(sock, &lum); | |
509 | if (ret) | |
510 | goto error; | |
511 | ||
512 | /* Send event_notifier notification pipe. */ | |
513 | len = ustcomm_send_fds_unix_sock(sock, &pipe_fd, 1); | |
514 | if (len <= 0) { | |
515 | ret = len; | |
516 | goto error; | |
517 | } | |
518 | ||
519 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
520 | if (ret) | |
521 | goto error; | |
522 | ||
523 | event_notifier_group_data->handle = lur.ret_val; | |
524 | DBG("received event_notifier group handle %d", event_notifier_group_data->handle); | |
525 | ||
526 | *_event_notifier_group_data = event_notifier_group_data; | |
527 | ||
528 | ret = 0; | |
529 | goto end; | |
530 | error: | |
531 | free(event_notifier_group_data); | |
532 | ||
533 | end: | |
534 | return ret; | |
535 | } | |
536 | ||
249cffb5 | 537 | int lttng_ust_ctl_create_event_notifier(int sock, struct lttng_ust_abi_event_notifier *event_notifier, |
fd17d7ce MD |
538 | struct lttng_ust_abi_object_data *event_notifier_group, |
539 | struct lttng_ust_abi_object_data **_event_notifier_data) | |
d8d2416d FD |
540 | { |
541 | struct ustcomm_ust_msg lum; | |
542 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 543 | struct lttng_ust_abi_object_data *event_notifier_data; |
8406222c | 544 | ssize_t len; |
d8d2416d FD |
545 | int ret; |
546 | ||
547 | if (!event_notifier_group || !_event_notifier_data) | |
548 | return -EINVAL; | |
549 | ||
550 | event_notifier_data = zmalloc(sizeof(*event_notifier_data)); | |
551 | if (!event_notifier_data) | |
552 | return -ENOMEM; | |
553 | ||
fd17d7ce | 554 | event_notifier_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER; |
d8d2416d FD |
555 | |
556 | memset(&lum, 0, sizeof(lum)); | |
557 | lum.handle = event_notifier_group->handle; | |
fd17d7ce | 558 | lum.cmd = LTTNG_UST_ABI_EVENT_NOTIFIER_CREATE; |
8406222c | 559 | lum.u.event_notifier.len = sizeof(*event_notifier); |
d8d2416d | 560 | |
41844673 | 561 | ret = ustcomm_send_app_msg(sock, &lum); |
d8d2416d FD |
562 | if (ret) { |
563 | free(event_notifier_data); | |
564 | return ret; | |
565 | } | |
31624f6c | 566 | /* Send struct lttng_ust_abi_event_notifier */ |
8406222c MD |
567 | len = ustcomm_send_unix_sock(sock, event_notifier, sizeof(*event_notifier)); |
568 | if (len != sizeof(*event_notifier)) { | |
4c4f4917 | 569 | free(event_notifier_data); |
8406222c MD |
570 | if (len < 0) |
571 | return len; | |
572 | else | |
573 | return -EIO; | |
574 | } | |
41844673 MD |
575 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); |
576 | if (ret) { | |
577 | free(event_notifier_data); | |
578 | return ret; | |
579 | } | |
d8d2416d FD |
580 | event_notifier_data->handle = lur.ret_val; |
581 | DBG("received event_notifier handle %u", event_notifier_data->handle); | |
582 | *_event_notifier_data = event_notifier_data; | |
583 | ||
584 | return ret; | |
585 | } | |
586 | ||
249cffb5 | 587 | int lttng_ust_ctl_tracepoint_list(int sock) |
57773204 | 588 | { |
b115631f MD |
589 | struct ustcomm_ust_msg lum; |
590 | struct ustcomm_ust_reply lur; | |
591 | int ret, tp_list_handle; | |
592 | ||
593 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
594 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
595 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_LIST; | |
b115631f MD |
596 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
597 | if (ret) | |
598 | return ret; | |
599 | tp_list_handle = lur.ret_val; | |
600 | DBG("received tracepoint list handle %u", tp_list_handle); | |
601 | return tp_list_handle; | |
602 | } | |
603 | ||
249cffb5 | 604 | int lttng_ust_ctl_tracepoint_list_get(int sock, int tp_list_handle, |
fd17d7ce | 605 | struct lttng_ust_abi_tracepoint_iter *iter) |
b115631f MD |
606 | { |
607 | struct ustcomm_ust_msg lum; | |
608 | struct ustcomm_ust_reply lur; | |
609 | int ret; | |
610 | ||
9bfc503d MD |
611 | if (!iter) |
612 | return -EINVAL; | |
613 | ||
b115631f MD |
614 | memset(&lum, 0, sizeof(lum)); |
615 | lum.handle = tp_list_handle; | |
fd17d7ce | 616 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_LIST_GET; |
b115631f MD |
617 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
618 | if (ret) | |
619 | return ret; | |
882a56d7 | 620 | DBG("received tracepoint list entry name %s loglevel %d", |
cbef6901 | 621 | lur.u.tracepoint.name, |
882a56d7 | 622 | lur.u.tracepoint.loglevel); |
cbef6901 | 623 | memcpy(iter, &lur.u.tracepoint, sizeof(*iter)); |
b115631f | 624 | return 0; |
57773204 MD |
625 | } |
626 | ||
249cffb5 | 627 | int lttng_ust_ctl_tracepoint_field_list(int sock) |
40003310 MD |
628 | { |
629 | struct ustcomm_ust_msg lum; | |
630 | struct ustcomm_ust_reply lur; | |
631 | int ret, tp_field_list_handle; | |
632 | ||
633 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
634 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
635 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_FIELD_LIST; | |
40003310 MD |
636 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
637 | if (ret) | |
638 | return ret; | |
639 | tp_field_list_handle = lur.ret_val; | |
640 | DBG("received tracepoint field list handle %u", tp_field_list_handle); | |
641 | return tp_field_list_handle; | |
642 | } | |
643 | ||
249cffb5 | 644 | int lttng_ust_ctl_tracepoint_field_list_get(int sock, int tp_field_list_handle, |
fd17d7ce | 645 | struct lttng_ust_abi_field_iter *iter) |
40003310 MD |
646 | { |
647 | struct ustcomm_ust_msg lum; | |
648 | struct ustcomm_ust_reply lur; | |
649 | int ret; | |
650 | ssize_t len; | |
651 | ||
652 | if (!iter) | |
653 | return -EINVAL; | |
654 | ||
655 | memset(&lum, 0, sizeof(lum)); | |
656 | lum.handle = tp_field_list_handle; | |
fd17d7ce | 657 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_FIELD_LIST_GET; |
40003310 MD |
658 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
659 | if (ret) | |
660 | return ret; | |
661 | len = ustcomm_recv_unix_sock(sock, iter, sizeof(*iter)); | |
662 | if (len != sizeof(*iter)) { | |
663 | return -EINVAL; | |
664 | } | |
665 | DBG("received tracepoint field list entry event_name %s event_loglevel %d field_name %s field_type %d", | |
666 | iter->event_name, | |
667 | iter->loglevel, | |
668 | iter->field_name, | |
669 | iter->type); | |
670 | return 0; | |
671 | } | |
672 | ||
249cffb5 | 673 | int lttng_ust_ctl_tracer_version(int sock, struct lttng_ust_abi_tracer_version *v) |
57773204 MD |
674 | { |
675 | struct ustcomm_ust_msg lum; | |
676 | struct ustcomm_ust_reply lur; | |
677 | int ret; | |
678 | ||
9bfc503d MD |
679 | if (!v) |
680 | return -EINVAL; | |
681 | ||
57773204 | 682 | memset(&lum, 0, sizeof(lum)); |
fd17d7ce MD |
683 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
684 | lum.cmd = LTTNG_UST_ABI_TRACER_VERSION; | |
57773204 MD |
685 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
686 | if (ret) | |
687 | return ret; | |
688 | memcpy(v, &lur.u.version, sizeof(*v)); | |
689 | DBG("received tracer version"); | |
690 | return 0; | |
691 | } | |
692 | ||
249cffb5 | 693 | int lttng_ust_ctl_wait_quiescent(int sock) |
57773204 MD |
694 | { |
695 | struct ustcomm_ust_msg lum; | |
696 | struct ustcomm_ust_reply lur; | |
697 | int ret; | |
698 | ||
699 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
700 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
701 | lum.cmd = LTTNG_UST_ABI_WAIT_QUIESCENT; | |
57773204 MD |
702 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
703 | if (ret) | |
704 | return ret; | |
705 | DBG("waited for quiescent state"); | |
706 | return 0; | |
707 | } | |
708 | ||
249cffb5 | 709 | int lttng_ust_ctl_calibrate(int sock __attribute__((unused)), |
2208d8b5 | 710 | struct lttng_ust_abi_calibrate *calibrate) |
57773204 | 711 | { |
9bfc503d MD |
712 | if (!calibrate) |
713 | return -EINVAL; | |
714 | ||
57773204 MD |
715 | return -ENOSYS; |
716 | } | |
717 | ||
249cffb5 | 718 | int lttng_ust_ctl_sock_flush_buffer(int sock, struct lttng_ust_abi_object_data *object) |
f1fffc57 MD |
719 | { |
720 | struct ustcomm_ust_msg lum; | |
721 | struct ustcomm_ust_reply lur; | |
722 | int ret; | |
723 | ||
9bfc503d MD |
724 | if (!object) |
725 | return -EINVAL; | |
726 | ||
f1fffc57 MD |
727 | memset(&lum, 0, sizeof(lum)); |
728 | lum.handle = object->handle; | |
fd17d7ce | 729 | lum.cmd = LTTNG_UST_ABI_FLUSH_BUFFER; |
f1fffc57 MD |
730 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
731 | if (ret) | |
732 | return ret; | |
733 | DBG("flushed buffer handle %u", object->handle); | |
734 | return 0; | |
735 | } | |
736 | ||
74d81a6c | 737 | static |
249cffb5 | 738 | int lttng_ust_ctl_send_channel(int sock, |
fd17d7ce | 739 | enum lttng_ust_abi_chan_type type, |
74d81a6c MD |
740 | void *data, |
741 | uint64_t size, | |
ff0f5728 | 742 | int wakeup_fd, |
74d81a6c MD |
743 | int send_fd_only) |
744 | { | |
745 | ssize_t len; | |
746 | ||
747 | if (!send_fd_only) { | |
748 | /* Send mmap size */ | |
749 | len = ustcomm_send_unix_sock(sock, &size, sizeof(size)); | |
750 | if (len != sizeof(size)) { | |
751 | if (len < 0) | |
752 | return len; | |
753 | else | |
754 | return -EIO; | |
755 | } | |
756 | ||
757 | /* Send channel type */ | |
758 | len = ustcomm_send_unix_sock(sock, &type, sizeof(type)); | |
759 | if (len != sizeof(type)) { | |
760 | if (len < 0) | |
761 | return len; | |
762 | else | |
763 | return -EIO; | |
764 | } | |
765 | } | |
766 | ||
767 | /* Send channel data */ | |
768 | len = ustcomm_send_unix_sock(sock, data, size); | |
769 | if (len != size) { | |
770 | if (len < 0) | |
771 | return len; | |
772 | else | |
773 | return -EIO; | |
774 | } | |
57773204 | 775 | |
ff0f5728 MD |
776 | /* Send wakeup fd */ |
777 | len = ustcomm_send_fds_unix_sock(sock, &wakeup_fd, 1); | |
778 | if (len <= 0) { | |
779 | if (len < 0) | |
780 | return len; | |
781 | else | |
782 | return -EIO; | |
783 | } | |
74d81a6c MD |
784 | return 0; |
785 | } | |
786 | ||
787 | static | |
249cffb5 | 788 | int lttng_ust_ctl_send_stream(int sock, |
74d81a6c MD |
789 | uint32_t stream_nr, |
790 | uint64_t memory_map_size, | |
791 | int shm_fd, int wakeup_fd, | |
792 | int send_fd_only) | |
57773204 | 793 | { |
74d81a6c MD |
794 | ssize_t len; |
795 | int fds[2]; | |
796 | ||
797 | if (!send_fd_only) { | |
798 | if (shm_fd < 0) { | |
799 | /* finish iteration */ | |
800 | uint64_t v = -1; | |
801 | ||
802 | len = ustcomm_send_unix_sock(sock, &v, sizeof(v)); | |
803 | if (len != sizeof(v)) { | |
804 | if (len < 0) | |
805 | return len; | |
806 | else | |
807 | return -EIO; | |
808 | } | |
809 | return 0; | |
810 | } | |
811 | ||
812 | /* Send mmap size */ | |
813 | len = ustcomm_send_unix_sock(sock, &memory_map_size, | |
814 | sizeof(memory_map_size)); | |
815 | if (len != sizeof(memory_map_size)) { | |
816 | if (len < 0) | |
817 | return len; | |
818 | else | |
819 | return -EIO; | |
820 | } | |
821 | ||
822 | /* Send stream nr */ | |
823 | len = ustcomm_send_unix_sock(sock, &stream_nr, | |
824 | sizeof(stream_nr)); | |
825 | if (len != sizeof(stream_nr)) { | |
826 | if (len < 0) | |
827 | return len; | |
828 | else | |
829 | return -EIO; | |
830 | } | |
831 | } | |
832 | ||
833 | /* Send shm fd and wakeup fd */ | |
834 | fds[0] = shm_fd; | |
835 | fds[1] = wakeup_fd; | |
836 | len = ustcomm_send_fds_unix_sock(sock, fds, 2); | |
837 | if (len <= 0) { | |
838 | if (len < 0) | |
839 | return len; | |
840 | else | |
841 | return -EIO; | |
842 | } | |
843 | return 0; | |
844 | } | |
845 | ||
249cffb5 | 846 | int lttng_ust_ctl_recv_channel_from_consumer(int sock, |
fd17d7ce | 847 | struct lttng_ust_abi_object_data **_channel_data) |
74d81a6c | 848 | { |
fd17d7ce | 849 | struct lttng_ust_abi_object_data *channel_data; |
74d81a6c | 850 | ssize_t len; |
ff0f5728 | 851 | int wakeup_fd; |
7a784989 | 852 | int ret; |
57773204 | 853 | |
74d81a6c MD |
854 | channel_data = zmalloc(sizeof(*channel_data)); |
855 | if (!channel_data) { | |
856 | ret = -ENOMEM; | |
857 | goto error_alloc; | |
858 | } | |
fd17d7ce | 859 | channel_data->type = LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL; |
12f3dabc | 860 | channel_data->handle = -1; |
74d81a6c MD |
861 | |
862 | /* recv mmap size */ | |
863 | len = ustcomm_recv_unix_sock(sock, &channel_data->size, | |
864 | sizeof(channel_data->size)); | |
865 | if (len != sizeof(channel_data->size)) { | |
866 | if (len < 0) | |
867 | ret = len; | |
868 | else | |
869 | ret = -EINVAL; | |
870 | goto error; | |
871 | } | |
9bfc503d | 872 | |
74d81a6c MD |
873 | /* recv channel type */ |
874 | len = ustcomm_recv_unix_sock(sock, &channel_data->u.channel.type, | |
875 | sizeof(channel_data->u.channel.type)); | |
876 | if (len != sizeof(channel_data->u.channel.type)) { | |
877 | if (len < 0) | |
878 | ret = len; | |
879 | else | |
880 | ret = -EINVAL; | |
881 | goto error; | |
882 | } | |
883 | ||
884 | /* recv channel data */ | |
885 | channel_data->u.channel.data = zmalloc(channel_data->size); | |
886 | if (!channel_data->u.channel.data) { | |
887 | ret = -ENOMEM; | |
888 | goto error; | |
889 | } | |
890 | len = ustcomm_recv_unix_sock(sock, channel_data->u.channel.data, | |
891 | channel_data->size); | |
892 | if (len != channel_data->size) { | |
893 | if (len < 0) | |
894 | ret = len; | |
895 | else | |
896 | ret = -EINVAL; | |
897 | goto error_recv_data; | |
898 | } | |
ff0f5728 MD |
899 | /* recv wakeup fd */ |
900 | len = ustcomm_recv_fds_unix_sock(sock, &wakeup_fd, 1); | |
901 | if (len <= 0) { | |
902 | if (len < 0) { | |
903 | ret = len; | |
904 | goto error_recv_data; | |
905 | } else { | |
906 | ret = -EIO; | |
907 | goto error_recv_data; | |
908 | } | |
909 | } | |
910 | channel_data->u.channel.wakeup_fd = wakeup_fd; | |
74d81a6c MD |
911 | *_channel_data = channel_data; |
912 | return 0; | |
913 | ||
914 | error_recv_data: | |
915 | free(channel_data->u.channel.data); | |
916 | error: | |
917 | free(channel_data); | |
918 | error_alloc: | |
919 | return ret; | |
920 | } | |
921 | ||
249cffb5 | 922 | int lttng_ust_ctl_recv_stream_from_consumer(int sock, |
fd17d7ce | 923 | struct lttng_ust_abi_object_data **_stream_data) |
74d81a6c | 924 | { |
fd17d7ce | 925 | struct lttng_ust_abi_object_data *stream_data; |
74d81a6c MD |
926 | ssize_t len; |
927 | int ret; | |
928 | int fds[2]; | |
929 | ||
930 | stream_data = zmalloc(sizeof(*stream_data)); | |
931 | if (!stream_data) { | |
932 | ret = -ENOMEM; | |
933 | goto error_alloc; | |
57773204 | 934 | } |
74d81a6c | 935 | |
fd17d7ce | 936 | stream_data->type = LTTNG_UST_ABI_OBJECT_TYPE_STREAM; |
74d81a6c MD |
937 | stream_data->handle = -1; |
938 | ||
939 | /* recv mmap size */ | |
940 | len = ustcomm_recv_unix_sock(sock, &stream_data->size, | |
941 | sizeof(stream_data->size)); | |
942 | if (len != sizeof(stream_data->size)) { | |
943 | if (len < 0) | |
944 | ret = len; | |
945 | else | |
946 | ret = -EINVAL; | |
947 | goto error; | |
948 | } | |
949 | if (stream_data->size == -1) { | |
950 | ret = -LTTNG_UST_ERR_NOENT; | |
951 | goto error; | |
952 | } | |
953 | ||
954 | /* recv stream nr */ | |
955 | len = ustcomm_recv_unix_sock(sock, &stream_data->u.stream.stream_nr, | |
956 | sizeof(stream_data->u.stream.stream_nr)); | |
957 | if (len != sizeof(stream_data->u.stream.stream_nr)) { | |
958 | if (len < 0) | |
959 | ret = len; | |
960 | else | |
961 | ret = -EINVAL; | |
962 | goto error; | |
963 | } | |
964 | ||
965 | /* recv shm fd and wakeup fd */ | |
966 | len = ustcomm_recv_fds_unix_sock(sock, fds, 2); | |
967 | if (len <= 0) { | |
968 | if (len < 0) { | |
969 | ret = len; | |
970 | goto error; | |
971 | } else { | |
972 | ret = -EIO; | |
973 | goto error; | |
0bfe09ec | 974 | } |
0bfe09ec | 975 | } |
74d81a6c MD |
976 | stream_data->u.stream.shm_fd = fds[0]; |
977 | stream_data->u.stream.wakeup_fd = fds[1]; | |
978 | *_stream_data = stream_data; | |
979 | return 0; | |
0bfe09ec | 980 | |
74d81a6c MD |
981 | error: |
982 | free(stream_data); | |
983 | error_alloc: | |
984 | return ret; | |
985 | } | |
986 | ||
249cffb5 | 987 | int lttng_ust_ctl_send_channel_to_ust(int sock, int session_handle, |
fd17d7ce | 988 | struct lttng_ust_abi_object_data *channel_data) |
74d81a6c MD |
989 | { |
990 | struct ustcomm_ust_msg lum; | |
991 | struct ustcomm_ust_reply lur; | |
992 | int ret; | |
993 | ||
994 | if (!channel_data) | |
995 | return -EINVAL; | |
996 | ||
997 | memset(&lum, 0, sizeof(lum)); | |
998 | lum.handle = session_handle; | |
fd17d7ce | 999 | lum.cmd = LTTNG_UST_ABI_CHANNEL; |
74d81a6c MD |
1000 | lum.u.channel.len = channel_data->size; |
1001 | lum.u.channel.type = channel_data->u.channel.type; | |
1002 | ret = ustcomm_send_app_msg(sock, &lum); | |
1003 | if (ret) | |
1004 | return ret; | |
1005 | ||
249cffb5 | 1006 | ret = lttng_ust_ctl_send_channel(sock, |
74d81a6c MD |
1007 | channel_data->u.channel.type, |
1008 | channel_data->u.channel.data, | |
1009 | channel_data->size, | |
ff0f5728 | 1010 | channel_data->u.channel.wakeup_fd, |
74d81a6c MD |
1011 | 1); |
1012 | if (ret) | |
1013 | return ret; | |
1014 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1015 | if (!ret) { | |
7f2348b8 | 1016 | channel_data->handle = lur.ret_val; |
57773204 | 1017 | } |
74d81a6c MD |
1018 | return ret; |
1019 | } | |
1020 | ||
249cffb5 | 1021 | int lttng_ust_ctl_send_stream_to_ust(int sock, |
fd17d7ce MD |
1022 | struct lttng_ust_abi_object_data *channel_data, |
1023 | struct lttng_ust_abi_object_data *stream_data) | |
74d81a6c MD |
1024 | { |
1025 | struct ustcomm_ust_msg lum; | |
1026 | struct ustcomm_ust_reply lur; | |
1027 | int ret; | |
1028 | ||
1029 | memset(&lum, 0, sizeof(lum)); | |
1030 | lum.handle = channel_data->handle; | |
fd17d7ce | 1031 | lum.cmd = LTTNG_UST_ABI_STREAM; |
74d81a6c MD |
1032 | lum.u.stream.len = stream_data->size; |
1033 | lum.u.stream.stream_nr = stream_data->u.stream.stream_nr; | |
1034 | ret = ustcomm_send_app_msg(sock, &lum); | |
1035 | if (ret) | |
1036 | return ret; | |
1037 | ||
1038 | assert(stream_data); | |
fd17d7ce | 1039 | assert(stream_data->type == LTTNG_UST_ABI_OBJECT_TYPE_STREAM); |
74d81a6c | 1040 | |
249cffb5 | 1041 | ret = lttng_ust_ctl_send_stream(sock, |
74d81a6c MD |
1042 | stream_data->u.stream.stream_nr, |
1043 | stream_data->size, | |
1044 | stream_data->u.stream.shm_fd, | |
1045 | stream_data->u.stream.wakeup_fd, 1); | |
1046 | if (ret) | |
1047 | return ret; | |
1048 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1049 | } | |
1050 | ||
249cffb5 | 1051 | int lttng_ust_ctl_duplicate_ust_object_data(struct lttng_ust_abi_object_data **dest, |
fd17d7ce | 1052 | struct lttng_ust_abi_object_data *src) |
12f3dabc | 1053 | { |
fd17d7ce | 1054 | struct lttng_ust_abi_object_data *obj; |
12f3dabc MD |
1055 | int ret; |
1056 | ||
1057 | if (src->handle != -1) { | |
1058 | ret = -EINVAL; | |
1059 | goto error; | |
1060 | } | |
1061 | ||
1062 | obj = zmalloc(sizeof(*obj)); | |
1063 | if (!obj) { | |
1064 | ret = -ENOMEM; | |
1065 | goto error; | |
1066 | } | |
1067 | ||
1068 | obj->type = src->type; | |
1069 | obj->handle = src->handle; | |
1070 | obj->size = src->size; | |
1071 | ||
1072 | switch (obj->type) { | |
fd17d7ce | 1073 | case LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL: |
12f3dabc MD |
1074 | { |
1075 | obj->u.channel.type = src->u.channel.type; | |
1076 | if (src->u.channel.wakeup_fd >= 0) { | |
1077 | obj->u.channel.wakeup_fd = | |
1078 | dup(src->u.channel.wakeup_fd); | |
1079 | if (obj->u.channel.wakeup_fd < 0) { | |
1080 | ret = errno; | |
1081 | goto chan_error_wakeup_fd; | |
1082 | } | |
1083 | } else { | |
1084 | obj->u.channel.wakeup_fd = | |
1085 | src->u.channel.wakeup_fd; | |
1086 | } | |
1087 | obj->u.channel.data = zmalloc(obj->size); | |
1088 | if (!obj->u.channel.data) { | |
1089 | ret = -ENOMEM; | |
1090 | goto chan_error_alloc; | |
1091 | } | |
1092 | memcpy(obj->u.channel.data, src->u.channel.data, obj->size); | |
1093 | break; | |
1094 | ||
1095 | chan_error_alloc: | |
1096 | if (src->u.channel.wakeup_fd >= 0) { | |
1097 | int closeret; | |
1098 | ||
1099 | closeret = close(obj->u.channel.wakeup_fd); | |
1100 | if (closeret) { | |
1101 | PERROR("close"); | |
1102 | } | |
1103 | } | |
1104 | chan_error_wakeup_fd: | |
1105 | goto error_type; | |
1106 | ||
1107 | } | |
1108 | ||
fd17d7ce | 1109 | case LTTNG_UST_ABI_OBJECT_TYPE_STREAM: |
12f3dabc MD |
1110 | { |
1111 | obj->u.stream.stream_nr = src->u.stream.stream_nr; | |
1112 | if (src->u.stream.wakeup_fd >= 0) { | |
1113 | obj->u.stream.wakeup_fd = | |
1114 | dup(src->u.stream.wakeup_fd); | |
1115 | if (obj->u.stream.wakeup_fd < 0) { | |
1116 | ret = errno; | |
1117 | goto stream_error_wakeup_fd; | |
1118 | } | |
1119 | } else { | |
1120 | obj->u.stream.wakeup_fd = | |
1121 | src->u.stream.wakeup_fd; | |
1122 | } | |
1123 | ||
1124 | if (src->u.stream.shm_fd >= 0) { | |
1125 | obj->u.stream.shm_fd = | |
1126 | dup(src->u.stream.shm_fd); | |
1127 | if (obj->u.stream.shm_fd < 0) { | |
1128 | ret = errno; | |
1129 | goto stream_error_shm_fd; | |
1130 | } | |
1131 | } else { | |
1132 | obj->u.stream.shm_fd = | |
1133 | src->u.stream.shm_fd; | |
1134 | } | |
1135 | break; | |
1136 | ||
1137 | stream_error_shm_fd: | |
1138 | if (src->u.stream.wakeup_fd >= 0) { | |
1139 | int closeret; | |
1140 | ||
1141 | closeret = close(obj->u.stream.wakeup_fd); | |
1142 | if (closeret) { | |
1143 | PERROR("close"); | |
1144 | } | |
1145 | } | |
1146 | stream_error_wakeup_fd: | |
1147 | goto error_type; | |
1148 | } | |
1149 | ||
fd17d7ce | 1150 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER: |
ebabbf58 MD |
1151 | { |
1152 | obj->u.counter.data = zmalloc(obj->size); | |
1153 | if (!obj->u.counter.data) { | |
1154 | ret = -ENOMEM; | |
1155 | goto error_type; | |
1156 | } | |
1157 | memcpy(obj->u.counter.data, src->u.counter.data, obj->size); | |
1158 | break; | |
1159 | } | |
1160 | ||
fd17d7ce | 1161 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL: |
ebabbf58 MD |
1162 | { |
1163 | if (src->u.counter_global.shm_fd >= 0) { | |
1164 | obj->u.counter_global.shm_fd = | |
1165 | dup(src->u.counter_global.shm_fd); | |
1166 | if (obj->u.counter_global.shm_fd < 0) { | |
1167 | ret = errno; | |
1168 | goto error_type; | |
1169 | } | |
1170 | } | |
1171 | break; | |
1172 | } | |
1173 | ||
fd17d7ce | 1174 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU: |
ebabbf58 MD |
1175 | { |
1176 | obj->u.counter_cpu.cpu_nr = src->u.counter_cpu.cpu_nr; | |
1177 | if (src->u.counter_cpu.shm_fd >= 0) { | |
1178 | obj->u.counter_cpu.shm_fd = | |
1179 | dup(src->u.counter_cpu.shm_fd); | |
1180 | if (obj->u.counter_cpu.shm_fd < 0) { | |
1181 | ret = errno; | |
1182 | goto error_type; | |
1183 | } | |
1184 | } | |
1185 | break; | |
1186 | } | |
1187 | ||
12f3dabc MD |
1188 | default: |
1189 | ret = -EINVAL; | |
1190 | goto error_type; | |
1191 | } | |
1192 | ||
1193 | *dest = obj; | |
1194 | return 0; | |
1195 | ||
1196 | error_type: | |
1197 | free(obj); | |
1198 | error: | |
1199 | return ret; | |
1200 | } | |
1201 | ||
74d81a6c MD |
1202 | |
1203 | /* Buffer operations */ | |
1204 | ||
249cffb5 | 1205 | int lttng_ust_ctl_get_nr_stream_per_channel(void) |
5ea386c3 MD |
1206 | { |
1207 | return num_possible_cpus(); | |
1208 | } | |
1209 | ||
249cffb5 MJ |
1210 | struct lttng_ust_ctl_consumer_channel * |
1211 | lttng_ust_ctl_create_channel(struct lttng_ust_ctl_consumer_channel_attr *attr, | |
5ea386c3 | 1212 | const int *stream_fds, int nr_stream_fds) |
74d81a6c | 1213 | { |
249cffb5 | 1214 | struct lttng_ust_ctl_consumer_channel *chan; |
74d81a6c MD |
1215 | const char *transport_name; |
1216 | struct lttng_transport *transport; | |
1217 | ||
1218 | switch (attr->type) { | |
fd17d7ce MD |
1219 | case LTTNG_UST_ABI_CHAN_PER_CPU: |
1220 | if (attr->output == LTTNG_UST_ABI_MMAP) { | |
34a91bdb MD |
1221 | if (attr->overwrite) { |
1222 | if (attr->read_timer_interval == 0) { | |
1223 | transport_name = "relay-overwrite-mmap"; | |
1224 | } else { | |
1225 | transport_name = "relay-overwrite-rt-mmap"; | |
1226 | } | |
1227 | } else { | |
1228 | if (attr->read_timer_interval == 0) { | |
1229 | transport_name = "relay-discard-mmap"; | |
1230 | } else { | |
1231 | transport_name = "relay-discard-rt-mmap"; | |
1232 | } | |
1233 | } | |
74d81a6c MD |
1234 | } else { |
1235 | return NULL; | |
1236 | } | |
c1fca457 | 1237 | break; |
fd17d7ce MD |
1238 | case LTTNG_UST_ABI_CHAN_METADATA: |
1239 | if (attr->output == LTTNG_UST_ABI_MMAP) | |
74d81a6c MD |
1240 | transport_name = "relay-metadata-mmap"; |
1241 | else | |
1242 | return NULL; | |
c1fca457 MD |
1243 | break; |
1244 | default: | |
74d81a6c | 1245 | transport_name = "<unknown>"; |
c1fca457 MD |
1246 | return NULL; |
1247 | } | |
74d81a6c | 1248 | |
65c48d6a | 1249 | transport = lttng_ust_transport_find(transport_name); |
74d81a6c MD |
1250 | if (!transport) { |
1251 | DBG("LTTng transport %s not found\n", | |
32ce8569 | 1252 | transport_name); |
74d81a6c | 1253 | return NULL; |
7a784989 | 1254 | } |
74d81a6c MD |
1255 | |
1256 | chan = zmalloc(sizeof(*chan)); | |
1257 | if (!chan) | |
1258 | return NULL; | |
1259 | ||
a880bae5 | 1260 | chan->chan = transport->ops.priv->channel_create(transport_name, NULL, |
32ce8569 | 1261 | attr->subbuf_size, attr->num_subbuf, |
74d81a6c | 1262 | attr->switch_timer_interval, |
32ce8569 | 1263 | attr->read_timer_interval, |
a9ff648c | 1264 | attr->uuid, attr->chan_id, |
b2c5f61a MD |
1265 | stream_fds, nr_stream_fds, |
1266 | attr->blocking_timeout); | |
74d81a6c MD |
1267 | if (!chan->chan) { |
1268 | goto chan_error; | |
1269 | } | |
1270 | chan->chan->ops = &transport->ops; | |
1271 | memcpy(&chan->attr, attr, sizeof(chan->attr)); | |
249cffb5 MJ |
1272 | chan->wait_fd = lttng_ust_ctl_channel_get_wait_fd(chan); |
1273 | chan->wakeup_fd = lttng_ust_ctl_channel_get_wakeup_fd(chan); | |
74d81a6c MD |
1274 | return chan; |
1275 | ||
1276 | chan_error: | |
1277 | free(chan); | |
1278 | return NULL; | |
57773204 MD |
1279 | } |
1280 | ||
249cffb5 | 1281 | void lttng_ust_ctl_destroy_channel(struct lttng_ust_ctl_consumer_channel *chan) |
57773204 | 1282 | { |
249cffb5 MJ |
1283 | (void) lttng_ust_ctl_channel_close_wait_fd(chan); |
1284 | (void) lttng_ust_ctl_channel_close_wakeup_fd(chan); | |
a880bae5 | 1285 | chan->chan->ops->priv->channel_destroy(chan->chan); |
74d81a6c MD |
1286 | free(chan); |
1287 | } | |
1288 | ||
249cffb5 MJ |
1289 | int lttng_ust_ctl_send_channel_to_sessiond(int sock, |
1290 | struct lttng_ust_ctl_consumer_channel *channel) | |
74d81a6c MD |
1291 | { |
1292 | struct shm_object_table *table; | |
57773204 | 1293 | |
07539b34 | 1294 | table = channel->chan->priv->rb_chan->handle->table; |
74d81a6c | 1295 | if (table->size <= 0) |
9bfc503d | 1296 | return -EINVAL; |
249cffb5 | 1297 | return lttng_ust_ctl_send_channel(sock, |
74d81a6c MD |
1298 | channel->attr.type, |
1299 | table->objects[0].memory_map, | |
1300 | table->objects[0].memory_map_size, | |
ff0f5728 | 1301 | channel->wakeup_fd, |
74d81a6c MD |
1302 | 0); |
1303 | } | |
9bfc503d | 1304 | |
249cffb5 MJ |
1305 | int lttng_ust_ctl_send_stream_to_sessiond(int sock, |
1306 | struct lttng_ust_ctl_consumer_stream *stream) | |
74d81a6c MD |
1307 | { |
1308 | if (!stream) | |
249cffb5 | 1309 | return lttng_ust_ctl_send_stream(sock, -1U, -1U, -1, -1, 0); |
74d81a6c | 1310 | |
249cffb5 | 1311 | return lttng_ust_ctl_send_stream(sock, |
74d81a6c MD |
1312 | stream->cpu, |
1313 | stream->memory_map_size, | |
1314 | stream->shm_fd, stream->wakeup_fd, | |
1315 | 0); | |
57773204 MD |
1316 | } |
1317 | ||
249cffb5 MJ |
1318 | int lttng_ust_ctl_write_metadata_to_channel( |
1319 | struct lttng_ust_ctl_consumer_channel *channel, | |
c9023c93 MD |
1320 | const char *metadata_str, /* NOT null-terminated */ |
1321 | size_t len) /* metadata length */ | |
1322 | { | |
b5457df5 | 1323 | struct lttng_ust_ring_buffer_ctx ctx; |
e7bc0ef6 | 1324 | struct lttng_ust_channel_buffer *lttng_chan_buf = channel->chan; |
b5457df5 | 1325 | struct lttng_ust_ring_buffer_channel *rb_chan = lttng_chan_buf->priv->rb_chan; |
c9023c93 MD |
1326 | const char *str = metadata_str; |
1327 | int ret = 0, waitret; | |
1328 | size_t reserve_len, pos; | |
1329 | ||
1330 | for (pos = 0; pos < len; pos += reserve_len) { | |
1331 | reserve_len = min_t(size_t, | |
07539b34 | 1332 | lttng_chan_buf->ops->priv->packet_avail_size(lttng_chan_buf), |
c9023c93 | 1333 | len - pos); |
b5457df5 | 1334 | lttng_ust_ring_buffer_ctx_init(&ctx, rb_chan, reserve_len, sizeof(char), NULL); |
c9023c93 MD |
1335 | /* |
1336 | * We don't care about metadata buffer's records lost | |
1337 | * count, because we always retry here. Report error if | |
1338 | * we need to bail out after timeout or being | |
1339 | * interrupted. | |
1340 | */ | |
1341 | waitret = wait_cond_interruptible_timeout( | |
1342 | ({ | |
8936b6c0 | 1343 | ret = lttng_chan_buf->ops->event_reserve(&ctx); |
c9023c93 MD |
1344 | ret != -ENOBUFS || !ret; |
1345 | }), | |
1346 | LTTNG_METADATA_TIMEOUT_MSEC); | |
1347 | if (waitret == -ETIMEDOUT || waitret == -EINTR || ret) { | |
1348 | DBG("LTTng: Failure to write metadata to buffers (%s)\n", | |
1349 | waitret == -EINTR ? "interrupted" : | |
1350 | (ret == -ENOBUFS ? "timeout" : "I/O error")); | |
1351 | if (waitret == -EINTR) | |
1352 | ret = waitret; | |
1353 | goto end; | |
1354 | } | |
8936b6c0 | 1355 | lttng_chan_buf->ops->event_write(&ctx, &str[pos], reserve_len, 1); |
e7bc0ef6 | 1356 | lttng_chan_buf->ops->event_commit(&ctx); |
c9023c93 MD |
1357 | } |
1358 | end: | |
1359 | return ret; | |
1360 | } | |
1361 | ||
3ef94b0e JD |
1362 | /* |
1363 | * Write at most one packet in the channel. | |
1364 | * Returns the number of bytes written on success, < 0 on error. | |
1365 | */ | |
249cffb5 MJ |
1366 | ssize_t lttng_ust_ctl_write_one_packet_to_channel( |
1367 | struct lttng_ust_ctl_consumer_channel *channel, | |
3ef94b0e JD |
1368 | const char *metadata_str, /* NOT null-terminated */ |
1369 | size_t len) /* metadata length */ | |
1370 | { | |
b5457df5 | 1371 | struct lttng_ust_ring_buffer_ctx ctx; |
e7bc0ef6 | 1372 | struct lttng_ust_channel_buffer *lttng_chan_buf = channel->chan; |
b5457df5 | 1373 | struct lttng_ust_ring_buffer_channel *rb_chan = lttng_chan_buf->priv->rb_chan; |
3ef94b0e JD |
1374 | const char *str = metadata_str; |
1375 | ssize_t reserve_len; | |
1376 | int ret; | |
1377 | ||
1378 | reserve_len = min_t(ssize_t, | |
07539b34 | 1379 | lttng_chan_buf->ops->priv->packet_avail_size(lttng_chan_buf), |
3ef94b0e | 1380 | len); |
b5457df5 | 1381 | lttng_ust_ring_buffer_ctx_init(&ctx, rb_chan, reserve_len, sizeof(char), NULL); |
8936b6c0 | 1382 | ret = lttng_chan_buf->ops->event_reserve(&ctx); |
3ef94b0e JD |
1383 | if (ret != 0) { |
1384 | DBG("LTTng: event reservation failed"); | |
1385 | assert(ret < 0); | |
1386 | reserve_len = ret; | |
1387 | goto end; | |
1388 | } | |
8936b6c0 | 1389 | lttng_chan_buf->ops->event_write(&ctx, str, reserve_len, 1); |
e7bc0ef6 | 1390 | lttng_chan_buf->ops->event_commit(&ctx); |
3ef94b0e JD |
1391 | |
1392 | end: | |
1393 | return reserve_len; | |
1394 | } | |
1395 | ||
249cffb5 | 1396 | int lttng_ust_ctl_channel_close_wait_fd(struct lttng_ust_ctl_consumer_channel *consumer_chan) |
ff0f5728 | 1397 | { |
b5457df5 | 1398 | struct lttng_ust_ring_buffer_channel *chan; |
cb7378b3 | 1399 | int ret; |
ff0f5728 | 1400 | |
07539b34 | 1401 | chan = consumer_chan->chan->priv->rb_chan; |
cb7378b3 | 1402 | ret = ring_buffer_channel_close_wait_fd(&chan->backend.config, |
ff0f5728 | 1403 | chan, chan->handle); |
cb7378b3 MD |
1404 | if (!ret) |
1405 | consumer_chan->wait_fd = -1; | |
1406 | return ret; | |
ff0f5728 MD |
1407 | } |
1408 | ||
249cffb5 | 1409 | int lttng_ust_ctl_channel_close_wakeup_fd(struct lttng_ust_ctl_consumer_channel *consumer_chan) |
ff0f5728 | 1410 | { |
b5457df5 | 1411 | struct lttng_ust_ring_buffer_channel *chan; |
cb7378b3 | 1412 | int ret; |
ff0f5728 | 1413 | |
07539b34 | 1414 | chan = consumer_chan->chan->priv->rb_chan; |
cb7378b3 | 1415 | ret = ring_buffer_channel_close_wakeup_fd(&chan->backend.config, |
ff0f5728 | 1416 | chan, chan->handle); |
cb7378b3 MD |
1417 | if (!ret) |
1418 | consumer_chan->wakeup_fd = -1; | |
1419 | return ret; | |
ff0f5728 MD |
1420 | } |
1421 | ||
249cffb5 | 1422 | int lttng_ust_ctl_stream_close_wait_fd(struct lttng_ust_ctl_consumer_stream *stream) |
5224b5c8 | 1423 | { |
b5457df5 | 1424 | struct lttng_ust_ring_buffer_channel *chan; |
5224b5c8 | 1425 | |
07539b34 | 1426 | chan = stream->chan->chan->priv->rb_chan; |
ff0f5728 | 1427 | return ring_buffer_stream_close_wait_fd(&chan->backend.config, |
07539b34 | 1428 | chan, chan->handle, stream->cpu); |
5224b5c8 MD |
1429 | } |
1430 | ||
249cffb5 | 1431 | int lttng_ust_ctl_stream_close_wakeup_fd(struct lttng_ust_ctl_consumer_stream *stream) |
6e922b24 | 1432 | { |
b5457df5 | 1433 | struct lttng_ust_ring_buffer_channel *chan; |
74d81a6c | 1434 | |
07539b34 | 1435 | chan = stream->chan->chan->priv->rb_chan; |
ff0f5728 | 1436 | return ring_buffer_stream_close_wakeup_fd(&chan->backend.config, |
07539b34 | 1437 | chan, chan->handle, stream->cpu); |
74d81a6c MD |
1438 | } |
1439 | ||
249cffb5 MJ |
1440 | struct lttng_ust_ctl_consumer_stream * |
1441 | lttng_ust_ctl_create_stream(struct lttng_ust_ctl_consumer_channel *channel, | |
74d81a6c MD |
1442 | int cpu) |
1443 | { | |
249cffb5 | 1444 | struct lttng_ust_ctl_consumer_stream *stream; |
74d81a6c | 1445 | struct lttng_ust_shm_handle *handle; |
b5457df5 | 1446 | struct lttng_ust_ring_buffer_channel *rb_chan; |
74d81a6c MD |
1447 | int shm_fd, wait_fd, wakeup_fd; |
1448 | uint64_t memory_map_size; | |
b5457df5 | 1449 | struct lttng_ust_ring_buffer *buf; |
6e922b24 MD |
1450 | int ret; |
1451 | ||
74d81a6c MD |
1452 | if (!channel) |
1453 | return NULL; | |
07539b34 MD |
1454 | rb_chan = channel->chan->priv->rb_chan; |
1455 | handle = rb_chan->handle; | |
9bfc503d MD |
1456 | if (!handle) |
1457 | return NULL; | |
1458 | ||
07539b34 MD |
1459 | buf = channel_get_ring_buffer(&rb_chan->backend.config, |
1460 | rb_chan, cpu, handle, &shm_fd, &wait_fd, | |
74d81a6c | 1461 | &wakeup_fd, &memory_map_size); |
6e922b24 MD |
1462 | if (!buf) |
1463 | return NULL; | |
74d81a6c | 1464 | ret = lib_ring_buffer_open_read(buf, handle); |
6e922b24 MD |
1465 | if (ret) |
1466 | return NULL; | |
74d81a6c MD |
1467 | |
1468 | stream = zmalloc(sizeof(*stream)); | |
1469 | if (!stream) | |
1470 | goto alloc_error; | |
74d81a6c MD |
1471 | stream->buf = buf; |
1472 | stream->chan = channel; | |
1473 | stream->shm_fd = shm_fd; | |
1474 | stream->wait_fd = wait_fd; | |
1475 | stream->wakeup_fd = wakeup_fd; | |
1476 | stream->memory_map_size = memory_map_size; | |
1477 | stream->cpu = cpu; | |
1478 | return stream; | |
1479 | ||
1480 | alloc_error: | |
1481 | return NULL; | |
1482 | } | |
1483 | ||
249cffb5 | 1484 | void lttng_ust_ctl_destroy_stream(struct lttng_ust_ctl_consumer_stream *stream) |
74d81a6c | 1485 | { |
b5457df5 | 1486 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1487 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
74d81a6c MD |
1488 | |
1489 | assert(stream); | |
1490 | buf = stream->buf; | |
1491 | consumer_chan = stream->chan; | |
249cffb5 MJ |
1492 | (void) lttng_ust_ctl_stream_close_wait_fd(stream); |
1493 | (void) lttng_ust_ctl_stream_close_wakeup_fd(stream); | |
07539b34 | 1494 | lib_ring_buffer_release_read(buf, consumer_chan->chan->priv->rb_chan->handle); |
74d81a6c | 1495 | free(stream); |
6e922b24 MD |
1496 | } |
1497 | ||
249cffb5 | 1498 | int lttng_ust_ctl_channel_get_wait_fd(struct lttng_ust_ctl_consumer_channel *chan) |
ff0f5728 MD |
1499 | { |
1500 | if (!chan) | |
1501 | return -EINVAL; | |
07539b34 MD |
1502 | return shm_get_wait_fd(chan->chan->priv->rb_chan->handle, |
1503 | &chan->chan->priv->rb_chan->handle->chan._ref); | |
ff0f5728 MD |
1504 | } |
1505 | ||
249cffb5 | 1506 | int lttng_ust_ctl_channel_get_wakeup_fd(struct lttng_ust_ctl_consumer_channel *chan) |
ff0f5728 MD |
1507 | { |
1508 | if (!chan) | |
1509 | return -EINVAL; | |
07539b34 MD |
1510 | return shm_get_wakeup_fd(chan->chan->priv->rb_chan->handle, |
1511 | &chan->chan->priv->rb_chan->handle->chan._ref); | |
ff0f5728 MD |
1512 | } |
1513 | ||
249cffb5 | 1514 | int lttng_ust_ctl_stream_get_wait_fd(struct lttng_ust_ctl_consumer_stream *stream) |
6e922b24 | 1515 | { |
b5457df5 | 1516 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1517 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
74d81a6c MD |
1518 | |
1519 | if (!stream) | |
1520 | return -EINVAL; | |
1521 | buf = stream->buf; | |
1522 | consumer_chan = stream->chan; | |
07539b34 | 1523 | return shm_get_wait_fd(consumer_chan->chan->priv->rb_chan->handle, &buf->self._ref); |
74d81a6c MD |
1524 | } |
1525 | ||
249cffb5 | 1526 | int lttng_ust_ctl_stream_get_wakeup_fd(struct lttng_ust_ctl_consumer_stream *stream) |
74d81a6c | 1527 | { |
b5457df5 | 1528 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1529 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
74d81a6c MD |
1530 | |
1531 | if (!stream) | |
1532 | return -EINVAL; | |
1533 | buf = stream->buf; | |
1534 | consumer_chan = stream->chan; | |
07539b34 | 1535 | return shm_get_wakeup_fd(consumer_chan->chan->priv->rb_chan->handle, &buf->self._ref); |
6e922b24 MD |
1536 | } |
1537 | ||
57773204 MD |
1538 | /* For mmap mode, readable without "get" operation */ |
1539 | ||
249cffb5 | 1540 | void *lttng_ust_ctl_get_mmap_base(struct lttng_ust_ctl_consumer_stream *stream) |
9095efe9 | 1541 | { |
b5457df5 | 1542 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1543 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
74d81a6c MD |
1544 | |
1545 | if (!stream) | |
9bfc503d | 1546 | return NULL; |
74d81a6c MD |
1547 | buf = stream->buf; |
1548 | consumer_chan = stream->chan; | |
07539b34 | 1549 | return shmp(consumer_chan->chan->priv->rb_chan->handle, buf->backend.memory_map); |
9095efe9 MD |
1550 | } |
1551 | ||
57773204 | 1552 | /* returns the length to mmap. */ |
249cffb5 | 1553 | int lttng_ust_ctl_get_mmap_len(struct lttng_ust_ctl_consumer_stream *stream, |
57773204 MD |
1554 | unsigned long *len) |
1555 | { | |
249cffb5 | 1556 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
57773204 | 1557 | unsigned long mmap_buf_len; |
b5457df5 | 1558 | struct lttng_ust_ring_buffer_channel *rb_chan; |
57773204 | 1559 | |
74d81a6c | 1560 | if (!stream) |
9bfc503d | 1561 | return -EINVAL; |
74d81a6c | 1562 | consumer_chan = stream->chan; |
07539b34 MD |
1563 | rb_chan = consumer_chan->chan->priv->rb_chan; |
1564 | if (rb_chan->backend.config.output != RING_BUFFER_MMAP) | |
57773204 | 1565 | return -EINVAL; |
07539b34 MD |
1566 | mmap_buf_len = rb_chan->backend.buf_size; |
1567 | if (rb_chan->backend.extra_reader_sb) | |
1568 | mmap_buf_len += rb_chan->backend.subbuf_size; | |
57773204 MD |
1569 | if (mmap_buf_len > INT_MAX) |
1570 | return -EFBIG; | |
1571 | *len = mmap_buf_len; | |
1572 | return 0; | |
1573 | } | |
1574 | ||
1575 | /* returns the maximum size for sub-buffers. */ | |
249cffb5 | 1576 | int lttng_ust_ctl_get_max_subbuf_size(struct lttng_ust_ctl_consumer_stream *stream, |
57773204 MD |
1577 | unsigned long *len) |
1578 | { | |
249cffb5 | 1579 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
b5457df5 | 1580 | struct lttng_ust_ring_buffer_channel *rb_chan; |
57773204 | 1581 | |
74d81a6c | 1582 | if (!stream) |
9bfc503d | 1583 | return -EINVAL; |
74d81a6c | 1584 | consumer_chan = stream->chan; |
07539b34 MD |
1585 | rb_chan = consumer_chan->chan->priv->rb_chan; |
1586 | *len = rb_chan->backend.subbuf_size; | |
57773204 MD |
1587 | return 0; |
1588 | } | |
1589 | ||
1590 | /* | |
1591 | * For mmap mode, operate on the current packet (between get/put or | |
1592 | * get_next/put_next). | |
1593 | */ | |
1594 | ||
1595 | /* returns the offset of the subbuffer belonging to the mmap reader. */ | |
249cffb5 | 1596 | int lttng_ust_ctl_get_mmap_read_offset(struct lttng_ust_ctl_consumer_stream *stream, |
74d81a6c | 1597 | unsigned long *off) |
57773204 | 1598 | { |
b5457df5 | 1599 | struct lttng_ust_ring_buffer_channel *rb_chan; |
57773204 | 1600 | unsigned long sb_bindex; |
b5457df5 | 1601 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1602 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
b5457df5 MD |
1603 | struct lttng_ust_ring_buffer_backend_pages_shmp *barray_idx; |
1604 | struct lttng_ust_ring_buffer_backend_pages *pages; | |
57773204 | 1605 | |
74d81a6c | 1606 | if (!stream) |
9bfc503d | 1607 | return -EINVAL; |
74d81a6c MD |
1608 | buf = stream->buf; |
1609 | consumer_chan = stream->chan; | |
07539b34 MD |
1610 | rb_chan = consumer_chan->chan->priv->rb_chan; |
1611 | if (rb_chan->backend.config.output != RING_BUFFER_MMAP) | |
57773204 | 1612 | return -EINVAL; |
07539b34 | 1613 | sb_bindex = subbuffer_id_get_index(&rb_chan->backend.config, |
32ce8569 | 1614 | buf->backend.buf_rsb.id); |
07539b34 | 1615 | barray_idx = shmp_index(rb_chan->handle, buf->backend.array, |
34daae3e MD |
1616 | sb_bindex); |
1617 | if (!barray_idx) | |
1618 | return -EINVAL; | |
07539b34 | 1619 | pages = shmp(rb_chan->handle, barray_idx->shmp); |
34daae3e MD |
1620 | if (!pages) |
1621 | return -EINVAL; | |
1622 | *off = pages->mmap_offset; | |
57773204 MD |
1623 | return 0; |
1624 | } | |
1625 | ||
1626 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
249cffb5 | 1627 | int lttng_ust_ctl_get_subbuf_size(struct lttng_ust_ctl_consumer_stream *stream, |
74d81a6c | 1628 | unsigned long *len) |
57773204 | 1629 | { |
249cffb5 | 1630 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
b5457df5 MD |
1631 | struct lttng_ust_ring_buffer_channel *rb_chan; |
1632 | struct lttng_ust_ring_buffer *buf; | |
57773204 | 1633 | |
74d81a6c | 1634 | if (!stream) |
9bfc503d MD |
1635 | return -EINVAL; |
1636 | ||
74d81a6c MD |
1637 | buf = stream->buf; |
1638 | consumer_chan = stream->chan; | |
07539b34 MD |
1639 | rb_chan = consumer_chan->chan->priv->rb_chan; |
1640 | *len = lib_ring_buffer_get_read_data_size(&rb_chan->backend.config, buf, | |
1641 | rb_chan->handle); | |
57773204 MD |
1642 | return 0; |
1643 | } | |
1644 | ||
1645 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
249cffb5 | 1646 | int lttng_ust_ctl_get_padded_subbuf_size(struct lttng_ust_ctl_consumer_stream *stream, |
74d81a6c | 1647 | unsigned long *len) |
57773204 | 1648 | { |
249cffb5 | 1649 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
b5457df5 MD |
1650 | struct lttng_ust_ring_buffer_channel *rb_chan; |
1651 | struct lttng_ust_ring_buffer *buf; | |
57773204 | 1652 | |
74d81a6c | 1653 | if (!stream) |
9bfc503d | 1654 | return -EINVAL; |
74d81a6c MD |
1655 | buf = stream->buf; |
1656 | consumer_chan = stream->chan; | |
07539b34 MD |
1657 | rb_chan = consumer_chan->chan->priv->rb_chan; |
1658 | *len = lib_ring_buffer_get_read_data_size(&rb_chan->backend.config, buf, | |
1659 | rb_chan->handle); | |
b72687b8 | 1660 | *len = LTTNG_UST_PAGE_ALIGN(*len); |
57773204 MD |
1661 | return 0; |
1662 | } | |
1663 | ||
1664 | /* Get exclusive read access to the next sub-buffer that can be read. */ | |
249cffb5 | 1665 | int lttng_ust_ctl_get_next_subbuf(struct lttng_ust_ctl_consumer_stream *stream) |
57773204 | 1666 | { |
b5457df5 | 1667 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1668 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
9bfc503d | 1669 | |
74d81a6c MD |
1670 | if (!stream) |
1671 | return -EINVAL; | |
1672 | buf = stream->buf; | |
1673 | consumer_chan = stream->chan; | |
1674 | return lib_ring_buffer_get_next_subbuf(buf, | |
07539b34 | 1675 | consumer_chan->chan->priv->rb_chan->handle); |
57773204 MD |
1676 | } |
1677 | ||
1678 | ||
1679 | /* Release exclusive sub-buffer access, move consumer forward. */ | |
249cffb5 | 1680 | int lttng_ust_ctl_put_next_subbuf(struct lttng_ust_ctl_consumer_stream *stream) |
57773204 | 1681 | { |
b5457df5 | 1682 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1683 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
9bfc503d | 1684 | |
74d81a6c MD |
1685 | if (!stream) |
1686 | return -EINVAL; | |
1687 | buf = stream->buf; | |
1688 | consumer_chan = stream->chan; | |
07539b34 | 1689 | lib_ring_buffer_put_next_subbuf(buf, consumer_chan->chan->priv->rb_chan->handle); |
57773204 MD |
1690 | return 0; |
1691 | } | |
1692 | ||
1693 | /* snapshot */ | |
1694 | ||
1695 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
249cffb5 | 1696 | int lttng_ust_ctl_snapshot(struct lttng_ust_ctl_consumer_stream *stream) |
57773204 | 1697 | { |
b5457df5 | 1698 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1699 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
9bfc503d | 1700 | |
74d81a6c MD |
1701 | if (!stream) |
1702 | return -EINVAL; | |
1703 | buf = stream->buf; | |
1704 | consumer_chan = stream->chan; | |
57773204 | 1705 | return lib_ring_buffer_snapshot(buf, &buf->cons_snapshot, |
07539b34 | 1706 | &buf->prod_snapshot, consumer_chan->chan->priv->rb_chan->handle); |
57773204 MD |
1707 | } |
1708 | ||
f45930b7 JG |
1709 | /* |
1710 | * Get a snapshot of the current ring buffer producer and consumer positions | |
1711 | * even if the consumed and produced positions are contained within the same | |
1712 | * subbuffer. | |
1713 | */ | |
249cffb5 | 1714 | int lttng_ust_ctl_snapshot_sample_positions(struct lttng_ust_ctl_consumer_stream *stream) |
f45930b7 | 1715 | { |
b5457df5 | 1716 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1717 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
f45930b7 JG |
1718 | |
1719 | if (!stream) | |
1720 | return -EINVAL; | |
1721 | buf = stream->buf; | |
1722 | consumer_chan = stream->chan; | |
1723 | return lib_ring_buffer_snapshot_sample_positions(buf, | |
1724 | &buf->cons_snapshot, &buf->prod_snapshot, | |
07539b34 | 1725 | consumer_chan->chan->priv->rb_chan->handle); |
f45930b7 JG |
1726 | } |
1727 | ||
57773204 | 1728 | /* Get the consumer position (iteration start) */ |
249cffb5 | 1729 | int lttng_ust_ctl_snapshot_get_consumed(struct lttng_ust_ctl_consumer_stream *stream, |
74d81a6c | 1730 | unsigned long *pos) |
57773204 | 1731 | { |
b5457df5 | 1732 | struct lttng_ust_ring_buffer *buf; |
9bfc503d | 1733 | |
74d81a6c MD |
1734 | if (!stream) |
1735 | return -EINVAL; | |
1736 | buf = stream->buf; | |
57773204 MD |
1737 | *pos = buf->cons_snapshot; |
1738 | return 0; | |
1739 | } | |
1740 | ||
1741 | /* Get the producer position (iteration end) */ | |
249cffb5 | 1742 | int lttng_ust_ctl_snapshot_get_produced(struct lttng_ust_ctl_consumer_stream *stream, |
74d81a6c | 1743 | unsigned long *pos) |
57773204 | 1744 | { |
b5457df5 | 1745 | struct lttng_ust_ring_buffer *buf; |
9bfc503d | 1746 | |
74d81a6c MD |
1747 | if (!stream) |
1748 | return -EINVAL; | |
1749 | buf = stream->buf; | |
57773204 MD |
1750 | *pos = buf->prod_snapshot; |
1751 | return 0; | |
1752 | } | |
1753 | ||
1754 | /* Get exclusive read access to the specified sub-buffer position */ | |
249cffb5 | 1755 | int lttng_ust_ctl_get_subbuf(struct lttng_ust_ctl_consumer_stream *stream, |
74d81a6c | 1756 | unsigned long *pos) |
57773204 | 1757 | { |
b5457df5 | 1758 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1759 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
9bfc503d | 1760 | |
74d81a6c MD |
1761 | if (!stream) |
1762 | return -EINVAL; | |
1763 | buf = stream->buf; | |
1764 | consumer_chan = stream->chan; | |
1765 | return lib_ring_buffer_get_subbuf(buf, *pos, | |
07539b34 | 1766 | consumer_chan->chan->priv->rb_chan->handle); |
57773204 MD |
1767 | } |
1768 | ||
1769 | /* Release exclusive sub-buffer access */ | |
249cffb5 | 1770 | int lttng_ust_ctl_put_subbuf(struct lttng_ust_ctl_consumer_stream *stream) |
57773204 | 1771 | { |
b5457df5 | 1772 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1773 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
9bfc503d | 1774 | |
74d81a6c MD |
1775 | if (!stream) |
1776 | return -EINVAL; | |
1777 | buf = stream->buf; | |
1778 | consumer_chan = stream->chan; | |
07539b34 | 1779 | lib_ring_buffer_put_subbuf(buf, consumer_chan->chan->priv->rb_chan->handle); |
57773204 MD |
1780 | return 0; |
1781 | } | |
1782 | ||
249cffb5 | 1783 | void lttng_ust_ctl_flush_buffer(struct lttng_ust_ctl_consumer_stream *stream, |
b52190f2 | 1784 | int producer_active) |
57773204 | 1785 | { |
b5457df5 | 1786 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1787 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
74d81a6c MD |
1788 | |
1789 | assert(stream); | |
1790 | buf = stream->buf; | |
1791 | consumer_chan = stream->chan; | |
b52190f2 MD |
1792 | lib_ring_buffer_switch_slow(buf, |
1793 | producer_active ? SWITCH_ACTIVE : SWITCH_FLUSH, | |
07539b34 | 1794 | consumer_chan->chan->priv->rb_chan->handle); |
74d81a6c MD |
1795 | } |
1796 | ||
249cffb5 | 1797 | void lttng_ust_ctl_clear_buffer(struct lttng_ust_ctl_consumer_stream *stream) |
beca55a1 | 1798 | { |
b5457df5 | 1799 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1800 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
beca55a1 MD |
1801 | |
1802 | assert(stream); | |
1803 | buf = stream->buf; | |
1804 | consumer_chan = stream->chan; | |
1805 | lib_ring_buffer_switch_slow(buf, SWITCH_ACTIVE, | |
07539b34 MD |
1806 | consumer_chan->chan->priv->rb_chan->handle); |
1807 | lib_ring_buffer_clear_reader(buf, consumer_chan->chan->priv->rb_chan->handle); | |
beca55a1 MD |
1808 | } |
1809 | ||
b2f3252a JD |
1810 | static |
1811 | struct lttng_ust_client_lib_ring_buffer_client_cb *get_client_cb( | |
b5457df5 MD |
1812 | struct lttng_ust_ring_buffer *buf __attribute__((unused)), |
1813 | struct lttng_ust_ring_buffer_channel *chan) | |
b2f3252a | 1814 | { |
b5457df5 | 1815 | const struct lttng_ust_ring_buffer_config *config; |
b2f3252a JD |
1816 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; |
1817 | ||
b2f3252a JD |
1818 | config = &chan->backend.config; |
1819 | if (!config->cb_ptr) | |
1820 | return NULL; | |
1821 | client_cb = caa_container_of(config->cb_ptr, | |
1822 | struct lttng_ust_client_lib_ring_buffer_client_cb, | |
1823 | parent); | |
1824 | return client_cb; | |
1825 | } | |
1826 | ||
249cffb5 | 1827 | int lttng_ust_ctl_get_timestamp_begin(struct lttng_ust_ctl_consumer_stream *stream, |
b2f3252a JD |
1828 | uint64_t *timestamp_begin) |
1829 | { | |
1830 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1831 | struct lttng_ust_ring_buffer_channel *chan; |
1832 | struct lttng_ust_ring_buffer *buf; | |
b2f3252a JD |
1833 | |
1834 | if (!stream || !timestamp_begin) | |
1835 | return -EINVAL; | |
e1919a41 | 1836 | buf = stream->buf; |
07539b34 MD |
1837 | chan = stream->chan->chan->priv->rb_chan; |
1838 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
1839 | if (!client_cb) |
1840 | return -ENOSYS; | |
07539b34 | 1841 | return client_cb->timestamp_begin(buf, chan, timestamp_begin); |
b2f3252a JD |
1842 | } |
1843 | ||
249cffb5 | 1844 | int lttng_ust_ctl_get_timestamp_end(struct lttng_ust_ctl_consumer_stream *stream, |
b2f3252a JD |
1845 | uint64_t *timestamp_end) |
1846 | { | |
1847 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1848 | struct lttng_ust_ring_buffer_channel *chan; |
1849 | struct lttng_ust_ring_buffer *buf; | |
b2f3252a JD |
1850 | |
1851 | if (!stream || !timestamp_end) | |
1852 | return -EINVAL; | |
e1919a41 | 1853 | buf = stream->buf; |
07539b34 MD |
1854 | chan = stream->chan->chan->priv->rb_chan; |
1855 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
1856 | if (!client_cb) |
1857 | return -ENOSYS; | |
07539b34 | 1858 | return client_cb->timestamp_end(buf, chan, timestamp_end); |
b2f3252a JD |
1859 | } |
1860 | ||
249cffb5 | 1861 | int lttng_ust_ctl_get_events_discarded(struct lttng_ust_ctl_consumer_stream *stream, |
b2f3252a JD |
1862 | uint64_t *events_discarded) |
1863 | { | |
1864 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1865 | struct lttng_ust_ring_buffer_channel *chan; |
1866 | struct lttng_ust_ring_buffer *buf; | |
b2f3252a JD |
1867 | |
1868 | if (!stream || !events_discarded) | |
1869 | return -EINVAL; | |
e1919a41 | 1870 | buf = stream->buf; |
07539b34 MD |
1871 | chan = stream->chan->chan->priv->rb_chan; |
1872 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
1873 | if (!client_cb) |
1874 | return -ENOSYS; | |
07539b34 | 1875 | return client_cb->events_discarded(buf, chan, events_discarded); |
b2f3252a JD |
1876 | } |
1877 | ||
249cffb5 | 1878 | int lttng_ust_ctl_get_content_size(struct lttng_ust_ctl_consumer_stream *stream, |
b2f3252a JD |
1879 | uint64_t *content_size) |
1880 | { | |
1881 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1882 | struct lttng_ust_ring_buffer_channel *chan; |
1883 | struct lttng_ust_ring_buffer *buf; | |
b2f3252a JD |
1884 | |
1885 | if (!stream || !content_size) | |
1886 | return -EINVAL; | |
e1919a41 | 1887 | buf = stream->buf; |
07539b34 MD |
1888 | chan = stream->chan->chan->priv->rb_chan; |
1889 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
1890 | if (!client_cb) |
1891 | return -ENOSYS; | |
07539b34 | 1892 | return client_cb->content_size(buf, chan, content_size); |
b2f3252a JD |
1893 | } |
1894 | ||
249cffb5 | 1895 | int lttng_ust_ctl_get_packet_size(struct lttng_ust_ctl_consumer_stream *stream, |
b2f3252a JD |
1896 | uint64_t *packet_size) |
1897 | { | |
1898 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1899 | struct lttng_ust_ring_buffer_channel *chan; |
1900 | struct lttng_ust_ring_buffer *buf; | |
b2f3252a JD |
1901 | |
1902 | if (!stream || !packet_size) | |
1903 | return -EINVAL; | |
e1919a41 | 1904 | buf = stream->buf; |
07539b34 MD |
1905 | chan = stream->chan->chan->priv->rb_chan; |
1906 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
1907 | if (!client_cb) |
1908 | return -ENOSYS; | |
07539b34 | 1909 | return client_cb->packet_size(buf, chan, packet_size); |
b2f3252a JD |
1910 | } |
1911 | ||
249cffb5 | 1912 | int lttng_ust_ctl_get_stream_id(struct lttng_ust_ctl_consumer_stream *stream, |
b2f3252a JD |
1913 | uint64_t *stream_id) |
1914 | { | |
1915 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1916 | struct lttng_ust_ring_buffer_channel *chan; |
1917 | struct lttng_ust_ring_buffer *buf; | |
b2f3252a JD |
1918 | |
1919 | if (!stream || !stream_id) | |
1920 | return -EINVAL; | |
e1919a41 | 1921 | buf = stream->buf; |
07539b34 MD |
1922 | chan = stream->chan->chan->priv->rb_chan; |
1923 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
1924 | if (!client_cb) |
1925 | return -ENOSYS; | |
07539b34 | 1926 | return client_cb->stream_id(buf, chan, stream_id); |
b2f3252a JD |
1927 | } |
1928 | ||
249cffb5 | 1929 | int lttng_ust_ctl_get_current_timestamp(struct lttng_ust_ctl_consumer_stream *stream, |
fca361e8 JD |
1930 | uint64_t *ts) |
1931 | { | |
1932 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1933 | struct lttng_ust_ring_buffer_channel *chan; |
1934 | struct lttng_ust_ring_buffer *buf; | |
fca361e8 JD |
1935 | |
1936 | if (!stream || !ts) | |
1937 | return -EINVAL; | |
e1919a41 | 1938 | buf = stream->buf; |
07539b34 MD |
1939 | chan = stream->chan->chan->priv->rb_chan; |
1940 | client_cb = get_client_cb(buf, chan); | |
fca361e8 JD |
1941 | if (!client_cb || !client_cb->current_timestamp) |
1942 | return -ENOSYS; | |
07539b34 | 1943 | return client_cb->current_timestamp(buf, chan, ts); |
fca361e8 JD |
1944 | } |
1945 | ||
249cffb5 | 1946 | int lttng_ust_ctl_get_sequence_number(struct lttng_ust_ctl_consumer_stream *stream, |
1ff31389 JD |
1947 | uint64_t *seq) |
1948 | { | |
1949 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1950 | struct lttng_ust_ring_buffer_channel *chan; |
1951 | struct lttng_ust_ring_buffer *buf; | |
1ff31389 JD |
1952 | |
1953 | if (!stream || !seq) | |
1954 | return -EINVAL; | |
1955 | buf = stream->buf; | |
07539b34 MD |
1956 | chan = stream->chan->chan->priv->rb_chan; |
1957 | client_cb = get_client_cb(buf, chan); | |
1ff31389 JD |
1958 | if (!client_cb || !client_cb->sequence_number) |
1959 | return -ENOSYS; | |
07539b34 | 1960 | return client_cb->sequence_number(buf, chan, seq); |
1ff31389 JD |
1961 | } |
1962 | ||
249cffb5 | 1963 | int lttng_ust_ctl_get_instance_id(struct lttng_ust_ctl_consumer_stream *stream, |
45a00b05 JD |
1964 | uint64_t *id) |
1965 | { | |
1966 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1967 | struct lttng_ust_ring_buffer_channel *chan; |
1968 | struct lttng_ust_ring_buffer *buf; | |
45a00b05 JD |
1969 | |
1970 | if (!stream || !id) | |
1971 | return -EINVAL; | |
1972 | buf = stream->buf; | |
07539b34 MD |
1973 | chan = stream->chan->chan->priv->rb_chan; |
1974 | client_cb = get_client_cb(buf, chan); | |
45a00b05 JD |
1975 | if (!client_cb) |
1976 | return -ENOSYS; | |
07539b34 | 1977 | return client_cb->instance_id(buf, chan, id); |
45a00b05 JD |
1978 | } |
1979 | ||
eeef0055 | 1980 | #ifdef HAVE_LINUX_PERF_EVENT_H |
57201bb3 | 1981 | |
249cffb5 | 1982 | int lttng_ust_ctl_has_perf_counters(void) |
57201bb3 MD |
1983 | { |
1984 | return 1; | |
1985 | } | |
1986 | ||
1987 | #else | |
1988 | ||
249cffb5 | 1989 | int lttng_ust_ctl_has_perf_counters(void) |
57201bb3 MD |
1990 | { |
1991 | return 0; | |
1992 | } | |
1993 | ||
1994 | #endif | |
1995 | ||
a834901f MD |
1996 | #ifdef __linux__ |
1997 | /* | |
1998 | * Override application pid/uid/gid with unix socket credentials. If | |
1999 | * the application announced a pid matching our view, it means it is | |
2000 | * within the same pid namespace, so expose the ppid provided by the | |
2001 | * application. | |
2002 | */ | |
2003 | static | |
2004 | int get_cred(int sock, | |
249cffb5 | 2005 | const struct lttng_ust_ctl_reg_msg *reg_msg, |
a834901f MD |
2006 | uint32_t *pid, |
2007 | uint32_t *ppid, | |
2008 | uint32_t *uid, | |
2009 | uint32_t *gid) | |
2010 | { | |
2011 | struct ucred ucred; | |
2012 | socklen_t ucred_len = sizeof(struct ucred); | |
2013 | int ret; | |
2014 | ||
2015 | ret = getsockopt(sock, SOL_SOCKET, SO_PEERCRED, &ucred, &ucred_len); | |
2016 | if (ret) { | |
2017 | return -LTTNG_UST_ERR_PEERCRED; | |
2018 | } | |
2019 | DBG("Unix socket peercred [ pid: %u, uid: %u, gid: %u ], " | |
2020 | "application registered claiming [ pid: %u, ppid: %u, uid: %u, gid: %u ]", | |
2021 | ucred.pid, ucred.uid, ucred.gid, | |
2022 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); | |
2023 | if (!ucred.pid) { | |
2024 | ERR("Unix socket credential pid=0. Refusing application in distinct, non-nested pid namespace."); | |
2025 | return -LTTNG_UST_ERR_PEERCRED_PID; | |
2026 | } | |
2027 | *pid = ucred.pid; | |
2028 | *uid = ucred.uid; | |
2029 | *gid = ucred.gid; | |
2030 | if (ucred.pid == reg_msg->pid) { | |
2031 | *ppid = reg_msg->ppid; | |
2032 | } else { | |
2033 | *ppid = 0; | |
2034 | } | |
2035 | return 0; | |
2036 | } | |
2037 | #elif defined(__FreeBSD__) | |
2038 | #include <sys/ucred.h> | |
e494a9cd | 2039 | #include <sys/un.h> |
a834901f MD |
2040 | |
2041 | /* | |
2042 | * Override application uid/gid with unix socket credentials. Use the | |
2043 | * first group of the cr_groups. | |
2044 | * Use the pid and ppid provided by the application on registration. | |
2045 | */ | |
2046 | static | |
2047 | int get_cred(int sock, | |
249cffb5 | 2048 | const struct lttng_ust_ctl_reg_msg *reg_msg, |
a834901f MD |
2049 | uint32_t *pid, |
2050 | uint32_t *ppid, | |
2051 | uint32_t *uid, | |
2052 | uint32_t *gid) | |
2053 | { | |
2054 | struct xucred xucred; | |
2055 | socklen_t xucred_len = sizeof(struct xucred); | |
2056 | int ret; | |
2057 | ||
2058 | ret = getsockopt(sock, SOL_SOCKET, LOCAL_PEERCRED, &xucred, &xucred_len); | |
2059 | if (ret) { | |
2060 | return -LTTNG_UST_ERR_PEERCRED; | |
2061 | } | |
2062 | if (xucred.cr_version != XUCRED_VERSION || xucred.cr_ngroups < 1) { | |
2063 | return -LTTNG_UST_ERR_PEERCRED; | |
2064 | } | |
2065 | DBG("Unix socket peercred [ uid: %u, gid: %u ], " | |
2066 | "application registered claiming [ pid: %d, ppid: %d, uid: %u, gid: %u ]", | |
e494a9cd | 2067 | xucred.cr_uid, xucred.cr_groups[0], |
a834901f MD |
2068 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); |
2069 | *pid = reg_msg->pid; | |
2070 | *ppid = reg_msg->ppid; | |
e494a9cd | 2071 | *uid = xucred.cr_uid; |
a834901f MD |
2072 | *gid = xucred.cr_groups[0]; |
2073 | return 0; | |
2074 | } | |
2075 | #else | |
2076 | #warning "Using insecure fallback: trusting user id provided by registered applications. Please consider implementing use of unix socket credentials on your platform." | |
2077 | static | |
2078 | int get_cred(int sock, | |
249cffb5 | 2079 | const struct lttng_ust_ctl_reg_msg *reg_msg, |
a834901f MD |
2080 | uint32_t *pid, |
2081 | uint32_t *ppid, | |
2082 | uint32_t *uid, | |
2083 | uint32_t *gid) | |
2084 | { | |
2085 | DBG("Application registered claiming [ pid: %u, ppid: %d, uid: %u, gid: %u ]", | |
2086 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); | |
2087 | *pid = reg_msg->pid; | |
2088 | *ppid = reg_msg->ppid; | |
2089 | *uid = reg_msg->uid; | |
2090 | *gid = reg_msg->gid; | |
2091 | return 0; | |
2092 | } | |
2093 | #endif | |
2094 | ||
32ce8569 MD |
2095 | /* |
2096 | * Returns 0 on success, negative error value on error. | |
2097 | */ | |
249cffb5 MJ |
2098 | int lttng_ust_ctl_recv_reg_msg(int sock, |
2099 | enum lttng_ust_ctl_socket_type *type, | |
32ce8569 MD |
2100 | uint32_t *major, |
2101 | uint32_t *minor, | |
2102 | uint32_t *pid, | |
2103 | uint32_t *ppid, | |
2104 | uint32_t *uid, | |
2105 | uint32_t *gid, | |
2106 | uint32_t *bits_per_long, | |
2107 | uint32_t *uint8_t_alignment, | |
2108 | uint32_t *uint16_t_alignment, | |
2109 | uint32_t *uint32_t_alignment, | |
2110 | uint32_t *uint64_t_alignment, | |
2111 | uint32_t *long_alignment, | |
2112 | int *byte_order, | |
2113 | char *name) | |
2114 | { | |
2115 | ssize_t len; | |
249cffb5 | 2116 | struct lttng_ust_ctl_reg_msg reg_msg; |
32ce8569 MD |
2117 | |
2118 | len = ustcomm_recv_unix_sock(sock, ®_msg, sizeof(reg_msg)); | |
2119 | if (len > 0 && len != sizeof(reg_msg)) | |
2120 | return -EIO; | |
2121 | if (len == 0) | |
2122 | return -EPIPE; | |
2123 | if (len < 0) | |
2124 | return len; | |
2125 | ||
fd17d7ce | 2126 | if (reg_msg.magic == LTTNG_UST_ABI_COMM_MAGIC) { |
baa8acf3 MJ |
2127 | *byte_order = LTTNG_UST_BYTE_ORDER == LTTNG_UST_BIG_ENDIAN ? |
2128 | LTTNG_UST_BIG_ENDIAN : LTTNG_UST_LITTLE_ENDIAN; | |
2129 | } else if (reg_msg.magic == lttng_ust_bswap_32(LTTNG_UST_ABI_COMM_MAGIC)) { | |
2130 | *byte_order = LTTNG_UST_BYTE_ORDER == LTTNG_UST_BIG_ENDIAN ? | |
2131 | LTTNG_UST_LITTLE_ENDIAN : LTTNG_UST_BIG_ENDIAN; | |
32ce8569 MD |
2132 | } else { |
2133 | return -LTTNG_UST_ERR_INVAL_MAGIC; | |
2134 | } | |
2135 | switch (reg_msg.socket_type) { | |
249cffb5 | 2136 | case 0: *type = LTTNG_UST_CTL_SOCKET_CMD; |
32ce8569 | 2137 | break; |
249cffb5 | 2138 | case 1: *type = LTTNG_UST_CTL_SOCKET_NOTIFY; |
32ce8569 MD |
2139 | break; |
2140 | default: | |
2141 | return -LTTNG_UST_ERR_INVAL_SOCKET_TYPE; | |
2142 | } | |
2143 | *major = reg_msg.major; | |
2144 | *minor = reg_msg.minor; | |
32ce8569 MD |
2145 | *bits_per_long = reg_msg.bits_per_long; |
2146 | *uint8_t_alignment = reg_msg.uint8_t_alignment; | |
2147 | *uint16_t_alignment = reg_msg.uint16_t_alignment; | |
2148 | *uint32_t_alignment = reg_msg.uint32_t_alignment; | |
2149 | *uint64_t_alignment = reg_msg.uint64_t_alignment; | |
2150 | *long_alignment = reg_msg.long_alignment; | |
2151 | memcpy(name, reg_msg.name, LTTNG_UST_ABI_PROCNAME_LEN); | |
6a359b8a MD |
2152 | if (reg_msg.major < LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE || |
2153 | reg_msg.major > LTTNG_UST_ABI_MAJOR_VERSION) { | |
32ce8569 MD |
2154 | return -LTTNG_UST_ERR_UNSUP_MAJOR; |
2155 | } | |
a834901f | 2156 | return get_cred(sock, ®_msg, pid, ppid, uid, gid); |
32ce8569 MD |
2157 | } |
2158 | ||
249cffb5 | 2159 | int lttng_ust_ctl_recv_notify(int sock, enum lttng_ust_ctl_notify_cmd *notify_cmd) |
32ce8569 MD |
2160 | { |
2161 | struct ustcomm_notify_hdr header; | |
2162 | ssize_t len; | |
2163 | ||
2164 | len = ustcomm_recv_unix_sock(sock, &header, sizeof(header)); | |
2165 | if (len > 0 && len != sizeof(header)) | |
2166 | return -EIO; | |
2167 | if (len == 0) | |
2168 | return -EPIPE; | |
2169 | if (len < 0) | |
2170 | return len; | |
2171 | switch (header.notify_cmd) { | |
2172 | case 0: | |
249cffb5 | 2173 | *notify_cmd = LTTNG_UST_CTL_NOTIFY_CMD_EVENT; |
32ce8569 MD |
2174 | break; |
2175 | case 1: | |
249cffb5 | 2176 | *notify_cmd = LTTNG_UST_CTL_NOTIFY_CMD_CHANNEL; |
32ce8569 | 2177 | break; |
c785c634 | 2178 | case 2: |
249cffb5 | 2179 | *notify_cmd = LTTNG_UST_CTL_NOTIFY_CMD_ENUM; |
c785c634 | 2180 | break; |
32ce8569 MD |
2181 | default: |
2182 | return -EINVAL; | |
2183 | } | |
2184 | return 0; | |
2185 | } | |
2186 | ||
2187 | /* | |
2188 | * Returns 0 on success, negative error value on error. | |
2189 | */ | |
249cffb5 | 2190 | int lttng_ust_ctl_recv_register_event(int sock, |
32ce8569 MD |
2191 | int *session_objd, |
2192 | int *channel_objd, | |
2193 | char *event_name, | |
2194 | int *loglevel, | |
2195 | char **signature, | |
2196 | size_t *nr_fields, | |
249cffb5 | 2197 | struct lttng_ust_ctl_field **fields, |
32ce8569 MD |
2198 | char **model_emf_uri) |
2199 | { | |
2200 | ssize_t len; | |
2201 | struct ustcomm_notify_event_msg msg; | |
2202 | size_t signature_len, fields_len, model_emf_uri_len; | |
2203 | char *a_sign = NULL, *a_model_emf_uri = NULL; | |
249cffb5 | 2204 | struct lttng_ust_ctl_field *a_fields = NULL; |
32ce8569 MD |
2205 | |
2206 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2207 | if (len > 0 && len != sizeof(msg)) | |
2208 | return -EIO; | |
2209 | if (len == 0) | |
2210 | return -EPIPE; | |
2211 | if (len < 0) | |
2212 | return len; | |
2213 | ||
2214 | *session_objd = msg.session_objd; | |
2215 | *channel_objd = msg.channel_objd; | |
fd17d7ce MD |
2216 | strncpy(event_name, msg.event_name, LTTNG_UST_ABI_SYM_NAME_LEN); |
2217 | event_name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; | |
32ce8569 MD |
2218 | *loglevel = msg.loglevel; |
2219 | signature_len = msg.signature_len; | |
2220 | fields_len = msg.fields_len; | |
2221 | ||
2222 | if (fields_len % sizeof(*a_fields) != 0) { | |
2223 | return -EINVAL; | |
2224 | } | |
2225 | ||
2226 | model_emf_uri_len = msg.model_emf_uri_len; | |
2227 | ||
2228 | /* recv signature. contains at least \0. */ | |
2229 | a_sign = zmalloc(signature_len); | |
2230 | if (!a_sign) | |
2231 | return -ENOMEM; | |
2232 | len = ustcomm_recv_unix_sock(sock, a_sign, signature_len); | |
2233 | if (len > 0 && len != signature_len) { | |
2234 | len = -EIO; | |
2235 | goto signature_error; | |
2236 | } | |
2237 | if (len == 0) { | |
2238 | len = -EPIPE; | |
2239 | goto signature_error; | |
2240 | } | |
2241 | if (len < 0) { | |
2242 | goto signature_error; | |
2243 | } | |
2244 | /* Enforce end of string */ | |
111198c2 | 2245 | a_sign[signature_len - 1] = '\0'; |
32ce8569 MD |
2246 | |
2247 | /* recv fields */ | |
2248 | if (fields_len) { | |
2249 | a_fields = zmalloc(fields_len); | |
2250 | if (!a_fields) { | |
2251 | len = -ENOMEM; | |
2252 | goto signature_error; | |
2253 | } | |
2254 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2255 | if (len > 0 && len != fields_len) { | |
2256 | len = -EIO; | |
2257 | goto fields_error; | |
2258 | } | |
2259 | if (len == 0) { | |
2260 | len = -EPIPE; | |
2261 | goto fields_error; | |
2262 | } | |
2263 | if (len < 0) { | |
2264 | goto fields_error; | |
2265 | } | |
2266 | } | |
2267 | ||
2268 | if (model_emf_uri_len) { | |
2269 | /* recv model_emf_uri_len */ | |
2270 | a_model_emf_uri = zmalloc(model_emf_uri_len); | |
2271 | if (!a_model_emf_uri) { | |
2272 | len = -ENOMEM; | |
2273 | goto fields_error; | |
2274 | } | |
2275 | len = ustcomm_recv_unix_sock(sock, a_model_emf_uri, | |
2276 | model_emf_uri_len); | |
2277 | if (len > 0 && len != model_emf_uri_len) { | |
2278 | len = -EIO; | |
2279 | goto model_error; | |
2280 | } | |
2281 | if (len == 0) { | |
2282 | len = -EPIPE; | |
2283 | goto model_error; | |
2284 | } | |
2285 | if (len < 0) { | |
2286 | goto model_error; | |
2287 | } | |
2288 | /* Enforce end of string */ | |
2289 | a_model_emf_uri[model_emf_uri_len - 1] = '\0'; | |
2290 | } | |
2291 | ||
2292 | *signature = a_sign; | |
2293 | *nr_fields = fields_len / sizeof(*a_fields); | |
2294 | *fields = a_fields; | |
2295 | *model_emf_uri = a_model_emf_uri; | |
2296 | ||
2297 | return 0; | |
2298 | ||
2299 | model_error: | |
2300 | free(a_model_emf_uri); | |
2301 | fields_error: | |
2302 | free(a_fields); | |
2303 | signature_error: | |
2304 | free(a_sign); | |
2305 | return len; | |
2306 | } | |
2307 | ||
2308 | /* | |
2309 | * Returns 0 on success, negative error value on error. | |
2310 | */ | |
249cffb5 | 2311 | int lttng_ust_ctl_reply_register_event(int sock, |
32ce8569 MD |
2312 | uint32_t id, |
2313 | int ret_code) | |
2314 | { | |
2315 | ssize_t len; | |
2316 | struct { | |
2317 | struct ustcomm_notify_hdr header; | |
2318 | struct ustcomm_notify_event_reply r; | |
2319 | } reply; | |
2320 | ||
2321 | memset(&reply, 0, sizeof(reply)); | |
249cffb5 | 2322 | reply.header.notify_cmd = LTTNG_UST_CTL_NOTIFY_CMD_EVENT; |
32ce8569 MD |
2323 | reply.r.ret_code = ret_code; |
2324 | reply.r.event_id = id; | |
2325 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2326 | if (len > 0 && len != sizeof(reply)) | |
2327 | return -EIO; | |
2328 | if (len < 0) | |
2329 | return len; | |
2330 | return 0; | |
2331 | } | |
2332 | ||
c785c634 MD |
2333 | /* |
2334 | * Returns 0 on success, negative UST or system error value on error. | |
2335 | */ | |
249cffb5 | 2336 | int lttng_ust_ctl_recv_register_enum(int sock, |
c785c634 MD |
2337 | int *session_objd, |
2338 | char *enum_name, | |
249cffb5 | 2339 | struct lttng_ust_ctl_enum_entry **entries, |
c785c634 MD |
2340 | size_t *nr_entries) |
2341 | { | |
2342 | ssize_t len; | |
2343 | struct ustcomm_notify_enum_msg msg; | |
2344 | size_t entries_len; | |
249cffb5 | 2345 | struct lttng_ust_ctl_enum_entry *a_entries = NULL; |
c785c634 MD |
2346 | |
2347 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2348 | if (len > 0 && len != sizeof(msg)) | |
2349 | return -EIO; | |
2350 | if (len == 0) | |
2351 | return -EPIPE; | |
2352 | if (len < 0) | |
2353 | return len; | |
2354 | ||
2355 | *session_objd = msg.session_objd; | |
fd17d7ce MD |
2356 | strncpy(enum_name, msg.enum_name, LTTNG_UST_ABI_SYM_NAME_LEN); |
2357 | enum_name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; | |
c785c634 MD |
2358 | entries_len = msg.entries_len; |
2359 | ||
2360 | if (entries_len % sizeof(*a_entries) != 0) { | |
2361 | return -EINVAL; | |
2362 | } | |
2363 | ||
2364 | /* recv entries */ | |
2365 | if (entries_len) { | |
2366 | a_entries = zmalloc(entries_len); | |
2367 | if (!a_entries) | |
2368 | return -ENOMEM; | |
2369 | len = ustcomm_recv_unix_sock(sock, a_entries, entries_len); | |
2370 | if (len > 0 && len != entries_len) { | |
2371 | len = -EIO; | |
2372 | goto entries_error; | |
2373 | } | |
2374 | if (len == 0) { | |
2375 | len = -EPIPE; | |
2376 | goto entries_error; | |
2377 | } | |
2378 | if (len < 0) { | |
2379 | goto entries_error; | |
2380 | } | |
2381 | } | |
2382 | *nr_entries = entries_len / sizeof(*a_entries); | |
2383 | *entries = a_entries; | |
2384 | ||
2385 | return 0; | |
2386 | ||
2387 | entries_error: | |
2388 | free(a_entries); | |
2389 | return len; | |
2390 | } | |
2391 | ||
2392 | /* | |
2393 | * Returns 0 on success, negative error value on error. | |
2394 | */ | |
249cffb5 | 2395 | int lttng_ust_ctl_reply_register_enum(int sock, |
c785c634 MD |
2396 | uint64_t id, |
2397 | int ret_code) | |
2398 | { | |
2399 | ssize_t len; | |
2400 | struct { | |
2401 | struct ustcomm_notify_hdr header; | |
2402 | struct ustcomm_notify_enum_reply r; | |
2403 | } reply; | |
2404 | ||
2405 | memset(&reply, 0, sizeof(reply)); | |
249cffb5 | 2406 | reply.header.notify_cmd = LTTNG_UST_CTL_NOTIFY_CMD_ENUM; |
c785c634 MD |
2407 | reply.r.ret_code = ret_code; |
2408 | reply.r.enum_id = id; | |
2409 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2410 | if (len > 0 && len != sizeof(reply)) | |
2411 | return -EIO; | |
2412 | if (len < 0) | |
2413 | return len; | |
2414 | return 0; | |
2415 | } | |
2416 | ||
32ce8569 MD |
2417 | /* |
2418 | * Returns 0 on success, negative UST or system error value on error. | |
2419 | */ | |
249cffb5 | 2420 | int lttng_ust_ctl_recv_register_channel(int sock, |
32ce8569 MD |
2421 | int *session_objd, /* session descriptor (output) */ |
2422 | int *channel_objd, /* channel descriptor (output) */ | |
2423 | size_t *nr_fields, | |
249cffb5 | 2424 | struct lttng_ust_ctl_field **fields) |
32ce8569 MD |
2425 | { |
2426 | ssize_t len; | |
2427 | struct ustcomm_notify_channel_msg msg; | |
2428 | size_t fields_len; | |
249cffb5 | 2429 | struct lttng_ust_ctl_field *a_fields; |
32ce8569 MD |
2430 | |
2431 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2432 | if (len > 0 && len != sizeof(msg)) | |
2433 | return -EIO; | |
2434 | if (len == 0) | |
2435 | return -EPIPE; | |
2436 | if (len < 0) | |
2437 | return len; | |
2438 | ||
2439 | *session_objd = msg.session_objd; | |
2440 | *channel_objd = msg.channel_objd; | |
2441 | fields_len = msg.ctx_fields_len; | |
2442 | ||
2443 | if (fields_len % sizeof(*a_fields) != 0) { | |
2444 | return -EINVAL; | |
2445 | } | |
2446 | ||
2447 | /* recv fields */ | |
2448 | if (fields_len) { | |
2449 | a_fields = zmalloc(fields_len); | |
2450 | if (!a_fields) { | |
2451 | len = -ENOMEM; | |
2452 | goto alloc_error; | |
2453 | } | |
2454 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2455 | if (len > 0 && len != fields_len) { | |
2456 | len = -EIO; | |
2457 | goto fields_error; | |
2458 | } | |
2459 | if (len == 0) { | |
2460 | len = -EPIPE; | |
2461 | goto fields_error; | |
2462 | } | |
2463 | if (len < 0) { | |
2464 | goto fields_error; | |
2465 | } | |
2466 | *fields = a_fields; | |
2467 | } else { | |
2468 | *fields = NULL; | |
2469 | } | |
2470 | *nr_fields = fields_len / sizeof(*a_fields); | |
2471 | return 0; | |
2472 | ||
2473 | fields_error: | |
2474 | free(a_fields); | |
2475 | alloc_error: | |
2476 | return len; | |
2477 | } | |
2478 | ||
2479 | /* | |
2480 | * Returns 0 on success, negative error value on error. | |
2481 | */ | |
249cffb5 | 2482 | int lttng_ust_ctl_reply_register_channel(int sock, |
32ce8569 | 2483 | uint32_t chan_id, |
249cffb5 | 2484 | enum lttng_ust_ctl_channel_header header_type, |
32ce8569 MD |
2485 | int ret_code) |
2486 | { | |
2487 | ssize_t len; | |
2488 | struct { | |
2489 | struct ustcomm_notify_hdr header; | |
2490 | struct ustcomm_notify_channel_reply r; | |
2491 | } reply; | |
2492 | ||
2493 | memset(&reply, 0, sizeof(reply)); | |
249cffb5 | 2494 | reply.header.notify_cmd = LTTNG_UST_CTL_NOTIFY_CMD_CHANNEL; |
32ce8569 MD |
2495 | reply.r.ret_code = ret_code; |
2496 | reply.r.chan_id = chan_id; | |
2497 | switch (header_type) { | |
249cffb5 | 2498 | case LTTNG_UST_CTL_CHANNEL_HEADER_COMPACT: |
32ce8569 MD |
2499 | reply.r.header_type = 1; |
2500 | break; | |
249cffb5 | 2501 | case LTTNG_UST_CTL_CHANNEL_HEADER_LARGE: |
32ce8569 MD |
2502 | reply.r.header_type = 2; |
2503 | break; | |
2504 | default: | |
2505 | reply.r.header_type = 0; | |
2506 | break; | |
2507 | } | |
2508 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2509 | if (len > 0 && len != sizeof(reply)) | |
2510 | return -EIO; | |
2511 | if (len < 0) | |
2512 | return len; | |
2513 | return 0; | |
2514 | } | |
2515 | ||
f53329f3 | 2516 | /* Regenerate the statedump. */ |
249cffb5 | 2517 | int lttng_ust_ctl_regenerate_statedump(int sock, int handle) |
f53329f3 JD |
2518 | { |
2519 | struct ustcomm_ust_msg lum; | |
2520 | struct ustcomm_ust_reply lur; | |
2521 | int ret; | |
2522 | ||
2523 | memset(&lum, 0, sizeof(lum)); | |
2524 | lum.handle = handle; | |
fd17d7ce | 2525 | lum.cmd = LTTNG_UST_ABI_SESSION_STATEDUMP; |
f53329f3 JD |
2526 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
2527 | if (ret) | |
2528 | return ret; | |
2529 | DBG("Regenerated statedump for handle %u", handle); | |
2530 | return 0; | |
2531 | } | |
2532 | ||
ebabbf58 MD |
2533 | /* counter operations */ |
2534 | ||
249cffb5 | 2535 | int lttng_ust_ctl_get_nr_cpu_per_counter(void) |
ebabbf58 | 2536 | { |
74cc1f59 | 2537 | return num_possible_cpus(); |
ebabbf58 MD |
2538 | } |
2539 | ||
249cffb5 MJ |
2540 | struct lttng_ust_ctl_daemon_counter * |
2541 | lttng_ust_ctl_create_counter(size_t nr_dimensions, | |
2542 | const struct lttng_ust_ctl_counter_dimension *dimensions, | |
ebabbf58 MD |
2543 | int64_t global_sum_step, |
2544 | int global_counter_fd, | |
2545 | int nr_counter_cpu_fds, | |
2546 | const int *counter_cpu_fds, | |
249cffb5 MJ |
2547 | enum lttng_ust_ctl_counter_bitness bitness, |
2548 | enum lttng_ust_ctl_counter_arithmetic arithmetic, | |
81bc4972 MD |
2549 | uint32_t alloc_flags, |
2550 | bool coalesce_hits) | |
ebabbf58 MD |
2551 | { |
2552 | const char *transport_name; | |
249cffb5 | 2553 | struct lttng_ust_ctl_daemon_counter *counter; |
ebabbf58 MD |
2554 | struct lttng_counter_transport *transport; |
2555 | struct lttng_counter_dimension ust_dim[LTTNG_COUNTER_DIMENSION_MAX]; | |
2556 | size_t i; | |
2557 | ||
2558 | if (nr_dimensions > LTTNG_COUNTER_DIMENSION_MAX) | |
2559 | return NULL; | |
2560 | /* Currently, only per-cpu allocation is supported. */ | |
2561 | switch (alloc_flags) { | |
249cffb5 | 2562 | case LTTNG_UST_CTL_COUNTER_ALLOC_PER_CPU: |
ebabbf58 MD |
2563 | break; |
2564 | ||
249cffb5 MJ |
2565 | case LTTNG_UST_CTL_COUNTER_ALLOC_PER_CPU | LTTNG_UST_CTL_COUNTER_ALLOC_GLOBAL: |
2566 | case LTTNG_UST_CTL_COUNTER_ALLOC_GLOBAL: | |
ebabbf58 MD |
2567 | default: |
2568 | return NULL; | |
2569 | } | |
2570 | switch (bitness) { | |
249cffb5 | 2571 | case LTTNG_UST_CTL_COUNTER_BITNESS_32: |
ebabbf58 | 2572 | switch (arithmetic) { |
249cffb5 | 2573 | case LTTNG_UST_CTL_COUNTER_ARITHMETIC_MODULAR: |
ebabbf58 MD |
2574 | transport_name = "counter-per-cpu-32-modular"; |
2575 | break; | |
249cffb5 | 2576 | case LTTNG_UST_CTL_COUNTER_ARITHMETIC_SATURATION: |
ebabbf58 MD |
2577 | transport_name = "counter-per-cpu-32-saturation"; |
2578 | break; | |
2579 | default: | |
2580 | return NULL; | |
2581 | } | |
2582 | break; | |
249cffb5 | 2583 | case LTTNG_UST_CTL_COUNTER_BITNESS_64: |
ebabbf58 | 2584 | switch (arithmetic) { |
249cffb5 | 2585 | case LTTNG_UST_CTL_COUNTER_ARITHMETIC_MODULAR: |
ebabbf58 MD |
2586 | transport_name = "counter-per-cpu-64-modular"; |
2587 | break; | |
249cffb5 | 2588 | case LTTNG_UST_CTL_COUNTER_ARITHMETIC_SATURATION: |
ebabbf58 MD |
2589 | transport_name = "counter-per-cpu-64-saturation"; |
2590 | break; | |
2591 | default: | |
2592 | return NULL; | |
2593 | } | |
2594 | break; | |
2595 | default: | |
2596 | return NULL; | |
2597 | } | |
2598 | ||
2599 | transport = lttng_counter_transport_find(transport_name); | |
2600 | if (!transport) { | |
2601 | DBG("LTTng transport %s not found\n", | |
2602 | transport_name); | |
2603 | return NULL; | |
2604 | } | |
2605 | ||
2606 | counter = zmalloc(sizeof(*counter)); | |
2607 | if (!counter) | |
2608 | return NULL; | |
2609 | counter->attr = zmalloc(sizeof(*counter->attr)); | |
2610 | if (!counter->attr) | |
2611 | goto free_counter; | |
2612 | counter->attr->bitness = bitness; | |
2613 | counter->attr->arithmetic = arithmetic; | |
2614 | counter->attr->nr_dimensions = nr_dimensions; | |
2615 | counter->attr->global_sum_step = global_sum_step; | |
81bc4972 | 2616 | counter->attr->coalesce_hits = coalesce_hits; |
ebabbf58 MD |
2617 | for (i = 0; i < nr_dimensions; i++) |
2618 | counter->attr->dimensions[i] = dimensions[i]; | |
2619 | ||
2620 | for (i = 0; i < nr_dimensions; i++) { | |
2621 | ust_dim[i].size = dimensions[i].size; | |
2622 | ust_dim[i].underflow_index = dimensions[i].underflow_index; | |
2623 | ust_dim[i].overflow_index = dimensions[i].overflow_index; | |
2624 | ust_dim[i].has_underflow = dimensions[i].has_underflow; | |
2625 | ust_dim[i].has_overflow = dimensions[i].has_overflow; | |
2626 | } | |
2627 | counter->counter = transport->ops.counter_create(nr_dimensions, | |
2628 | ust_dim, global_sum_step, global_counter_fd, | |
2629 | nr_counter_cpu_fds, counter_cpu_fds, true); | |
2630 | if (!counter->counter) | |
2631 | goto free_attr; | |
2632 | counter->ops = &transport->ops; | |
2633 | return counter; | |
2634 | ||
2635 | free_attr: | |
2636 | free(counter->attr); | |
2637 | free_counter: | |
2638 | free(counter); | |
2639 | return NULL; | |
2640 | } | |
2641 | ||
249cffb5 | 2642 | int lttng_ust_ctl_create_counter_data(struct lttng_ust_ctl_daemon_counter *counter, |
fd17d7ce | 2643 | struct lttng_ust_abi_object_data **_counter_data) |
ebabbf58 | 2644 | { |
fd17d7ce MD |
2645 | struct lttng_ust_abi_object_data *counter_data; |
2646 | struct lttng_ust_abi_counter_conf counter_conf = {0}; | |
ebabbf58 MD |
2647 | size_t i; |
2648 | int ret; | |
2649 | ||
2650 | switch (counter->attr->arithmetic) { | |
249cffb5 | 2651 | case LTTNG_UST_CTL_COUNTER_ARITHMETIC_MODULAR: |
fd17d7ce | 2652 | counter_conf.arithmetic = LTTNG_UST_ABI_COUNTER_ARITHMETIC_MODULAR; |
ebabbf58 | 2653 | break; |
249cffb5 | 2654 | case LTTNG_UST_CTL_COUNTER_ARITHMETIC_SATURATION: |
fd17d7ce | 2655 | counter_conf.arithmetic = LTTNG_UST_ABI_COUNTER_ARITHMETIC_SATURATION; |
ebabbf58 MD |
2656 | break; |
2657 | default: | |
2658 | return -EINVAL; | |
2659 | } | |
2660 | switch (counter->attr->bitness) { | |
249cffb5 | 2661 | case LTTNG_UST_CTL_COUNTER_BITNESS_32: |
fd17d7ce | 2662 | counter_conf.bitness = LTTNG_UST_ABI_COUNTER_BITNESS_32; |
ebabbf58 | 2663 | break; |
249cffb5 | 2664 | case LTTNG_UST_CTL_COUNTER_BITNESS_64: |
fd17d7ce | 2665 | counter_conf.bitness = LTTNG_UST_ABI_COUNTER_BITNESS_64; |
ebabbf58 MD |
2666 | break; |
2667 | default: | |
2668 | return -EINVAL; | |
2669 | } | |
2670 | counter_conf.number_dimensions = counter->attr->nr_dimensions; | |
2671 | counter_conf.global_sum_step = counter->attr->global_sum_step; | |
81bc4972 | 2672 | counter_conf.coalesce_hits = counter->attr->coalesce_hits; |
ebabbf58 MD |
2673 | for (i = 0; i < counter->attr->nr_dimensions; i++) { |
2674 | counter_conf.dimensions[i].size = counter->attr->dimensions[i].size; | |
2675 | counter_conf.dimensions[i].underflow_index = counter->attr->dimensions[i].underflow_index; | |
2676 | counter_conf.dimensions[i].overflow_index = counter->attr->dimensions[i].overflow_index; | |
2677 | counter_conf.dimensions[i].has_underflow = counter->attr->dimensions[i].has_underflow; | |
2678 | counter_conf.dimensions[i].has_overflow = counter->attr->dimensions[i].has_overflow; | |
2679 | } | |
2680 | ||
2681 | counter_data = zmalloc(sizeof(*counter_data)); | |
2682 | if (!counter_data) { | |
2683 | ret = -ENOMEM; | |
2684 | goto error_alloc; | |
2685 | } | |
fd17d7ce | 2686 | counter_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER; |
ebabbf58 MD |
2687 | counter_data->handle = -1; |
2688 | ||
2689 | counter_data->size = sizeof(counter_conf); | |
2690 | counter_data->u.counter.data = zmalloc(sizeof(counter_conf)); | |
2691 | if (!counter_data->u.counter.data) { | |
2692 | ret = -ENOMEM; | |
2693 | goto error_alloc_data; | |
2694 | } | |
2695 | ||
2696 | memcpy(counter_data->u.counter.data, &counter_conf, sizeof(counter_conf)); | |
2697 | *_counter_data = counter_data; | |
2698 | ||
2699 | return 0; | |
2700 | ||
2701 | error_alloc_data: | |
2702 | free(counter_data); | |
2703 | error_alloc: | |
2704 | return ret; | |
2705 | } | |
2706 | ||
249cffb5 | 2707 | int lttng_ust_ctl_create_counter_global_data(struct lttng_ust_ctl_daemon_counter *counter, |
fd17d7ce | 2708 | struct lttng_ust_abi_object_data **_counter_global_data) |
ebabbf58 | 2709 | { |
fd17d7ce | 2710 | struct lttng_ust_abi_object_data *counter_global_data; |
ebabbf58 MD |
2711 | int ret, fd; |
2712 | size_t len; | |
2713 | ||
2714 | if (lttng_counter_get_global_shm(counter->counter, &fd, &len)) | |
2715 | return -EINVAL; | |
2716 | counter_global_data = zmalloc(sizeof(*counter_global_data)); | |
2717 | if (!counter_global_data) { | |
2718 | ret = -ENOMEM; | |
2719 | goto error_alloc; | |
2720 | } | |
fd17d7ce | 2721 | counter_global_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL; |
ebabbf58 MD |
2722 | counter_global_data->handle = -1; |
2723 | counter_global_data->size = len; | |
2724 | counter_global_data->u.counter_global.shm_fd = fd; | |
2725 | *_counter_global_data = counter_global_data; | |
2726 | return 0; | |
2727 | ||
2728 | error_alloc: | |
2729 | return ret; | |
2730 | } | |
2731 | ||
249cffb5 | 2732 | int lttng_ust_ctl_create_counter_cpu_data(struct lttng_ust_ctl_daemon_counter *counter, int cpu, |
fd17d7ce | 2733 | struct lttng_ust_abi_object_data **_counter_cpu_data) |
ebabbf58 | 2734 | { |
fd17d7ce | 2735 | struct lttng_ust_abi_object_data *counter_cpu_data; |
ebabbf58 MD |
2736 | int ret, fd; |
2737 | size_t len; | |
2738 | ||
2739 | if (lttng_counter_get_cpu_shm(counter->counter, cpu, &fd, &len)) | |
2740 | return -EINVAL; | |
2741 | counter_cpu_data = zmalloc(sizeof(*counter_cpu_data)); | |
2742 | if (!counter_cpu_data) { | |
2743 | ret = -ENOMEM; | |
2744 | goto error_alloc; | |
2745 | } | |
fd17d7ce | 2746 | counter_cpu_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU; |
ebabbf58 MD |
2747 | counter_cpu_data->handle = -1; |
2748 | counter_cpu_data->size = len; | |
2749 | counter_cpu_data->u.counter_cpu.shm_fd = fd; | |
2750 | counter_cpu_data->u.counter_cpu.cpu_nr = cpu; | |
2751 | *_counter_cpu_data = counter_cpu_data; | |
2752 | return 0; | |
2753 | ||
2754 | error_alloc: | |
2755 | return ret; | |
2756 | } | |
2757 | ||
249cffb5 | 2758 | void lttng_ust_ctl_destroy_counter(struct lttng_ust_ctl_daemon_counter *counter) |
ebabbf58 MD |
2759 | { |
2760 | counter->ops->counter_destroy(counter->counter); | |
2761 | free(counter->attr); | |
2762 | free(counter); | |
2763 | } | |
2764 | ||
249cffb5 | 2765 | int lttng_ust_ctl_send_counter_data_to_ust(int sock, int parent_handle, |
fd17d7ce | 2766 | struct lttng_ust_abi_object_data *counter_data) |
ebabbf58 MD |
2767 | { |
2768 | struct ustcomm_ust_msg lum; | |
2769 | struct ustcomm_ust_reply lur; | |
2770 | int ret; | |
2771 | size_t size; | |
2772 | ssize_t len; | |
2773 | ||
2774 | if (!counter_data) | |
2775 | return -EINVAL; | |
2776 | ||
2777 | size = counter_data->size; | |
2778 | memset(&lum, 0, sizeof(lum)); | |
2779 | lum.handle = parent_handle; | |
fd17d7ce | 2780 | lum.cmd = LTTNG_UST_ABI_COUNTER; |
ebabbf58 MD |
2781 | lum.u.counter.len = size; |
2782 | ret = ustcomm_send_app_msg(sock, &lum); | |
2783 | if (ret) | |
2784 | return ret; | |
2785 | ||
2786 | /* Send counter data */ | |
2787 | len = ustcomm_send_unix_sock(sock, counter_data->u.counter.data, size); | |
2788 | if (len != size) { | |
2789 | if (len < 0) | |
2790 | return len; | |
2791 | else | |
2792 | return -EIO; | |
2793 | } | |
2794 | ||
2795 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2796 | if (!ret) { | |
2797 | counter_data->handle = lur.ret_val; | |
2798 | } | |
2799 | return ret; | |
2800 | } | |
2801 | ||
249cffb5 | 2802 | int lttng_ust_ctl_send_counter_global_data_to_ust(int sock, |
fd17d7ce MD |
2803 | struct lttng_ust_abi_object_data *counter_data, |
2804 | struct lttng_ust_abi_object_data *counter_global_data) | |
ebabbf58 MD |
2805 | { |
2806 | struct ustcomm_ust_msg lum; | |
2807 | struct ustcomm_ust_reply lur; | |
2808 | int ret, shm_fd[1]; | |
2809 | size_t size; | |
2810 | ssize_t len; | |
2811 | ||
2812 | if (!counter_data || !counter_global_data) | |
2813 | return -EINVAL; | |
2814 | ||
2815 | size = counter_global_data->size; | |
2816 | memset(&lum, 0, sizeof(lum)); | |
2817 | lum.handle = counter_data->handle; /* parent handle */ | |
fd17d7ce | 2818 | lum.cmd = LTTNG_UST_ABI_COUNTER_GLOBAL; |
ebabbf58 MD |
2819 | lum.u.counter_global.len = size; |
2820 | ret = ustcomm_send_app_msg(sock, &lum); | |
2821 | if (ret) | |
2822 | return ret; | |
2823 | ||
2824 | shm_fd[0] = counter_global_data->u.counter_global.shm_fd; | |
2825 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
2826 | if (len <= 0) { | |
2827 | if (len < 0) | |
2828 | return len; | |
2829 | else | |
2830 | return -EIO; | |
2831 | } | |
2832 | ||
2833 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2834 | if (!ret) { | |
2835 | counter_global_data->handle = lur.ret_val; | |
2836 | } | |
2837 | return ret; | |
2838 | } | |
2839 | ||
249cffb5 | 2840 | int lttng_ust_ctl_send_counter_cpu_data_to_ust(int sock, |
fd17d7ce MD |
2841 | struct lttng_ust_abi_object_data *counter_data, |
2842 | struct lttng_ust_abi_object_data *counter_cpu_data) | |
ebabbf58 MD |
2843 | { |
2844 | struct ustcomm_ust_msg lum; | |
2845 | struct ustcomm_ust_reply lur; | |
2846 | int ret, shm_fd[1]; | |
2847 | size_t size; | |
2848 | ssize_t len; | |
2849 | ||
2850 | if (!counter_data || !counter_cpu_data) | |
2851 | return -EINVAL; | |
2852 | ||
2853 | size = counter_cpu_data->size; | |
2854 | memset(&lum, 0, sizeof(lum)); | |
2855 | lum.handle = counter_data->handle; /* parent handle */ | |
fd17d7ce | 2856 | lum.cmd = LTTNG_UST_ABI_COUNTER_CPU; |
ebabbf58 MD |
2857 | lum.u.counter_cpu.len = size; |
2858 | lum.u.counter_cpu.cpu_nr = counter_cpu_data->u.counter_cpu.cpu_nr; | |
2859 | ret = ustcomm_send_app_msg(sock, &lum); | |
2860 | if (ret) | |
2861 | return ret; | |
2862 | ||
2863 | shm_fd[0] = counter_cpu_data->u.counter_global.shm_fd; | |
2864 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
2865 | if (len <= 0) { | |
2866 | if (len < 0) | |
2867 | return len; | |
2868 | else | |
2869 | return -EIO; | |
2870 | } | |
2871 | ||
2872 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2873 | if (!ret) { | |
2874 | counter_cpu_data->handle = lur.ret_val; | |
2875 | } | |
2876 | return ret; | |
2877 | } | |
2878 | ||
249cffb5 | 2879 | int lttng_ust_ctl_counter_read(struct lttng_ust_ctl_daemon_counter *counter, |
ebabbf58 MD |
2880 | const size_t *dimension_indexes, |
2881 | int cpu, int64_t *value, | |
2882 | bool *overflow, bool *underflow) | |
2883 | { | |
2884 | return counter->ops->counter_read(counter->counter, dimension_indexes, cpu, | |
2885 | value, overflow, underflow); | |
2886 | } | |
2887 | ||
249cffb5 | 2888 | int lttng_ust_ctl_counter_aggregate(struct lttng_ust_ctl_daemon_counter *counter, |
ebabbf58 MD |
2889 | const size_t *dimension_indexes, |
2890 | int64_t *value, | |
2891 | bool *overflow, bool *underflow) | |
2892 | { | |
2893 | return counter->ops->counter_aggregate(counter->counter, dimension_indexes, | |
2894 | value, overflow, underflow); | |
2895 | } | |
2896 | ||
249cffb5 | 2897 | int lttng_ust_ctl_counter_clear(struct lttng_ust_ctl_daemon_counter *counter, |
ebabbf58 MD |
2898 | const size_t *dimension_indexes) |
2899 | { | |
2900 | return counter->ops->counter_clear(counter->counter, dimension_indexes); | |
2901 | } | |
2902 | ||
465a0d04 | 2903 | static |
fca97dfd | 2904 | void lttng_ust_ctl_ctor(void) |
465a0d04 MJ |
2905 | __attribute__((constructor)); |
2906 | static | |
fca97dfd | 2907 | void lttng_ust_ctl_ctor(void) |
74d81a6c | 2908 | { |
fca97dfd MJ |
2909 | /* |
2910 | * Call the liblttng-ust-common constructor to ensure it runs first. | |
2911 | */ | |
2912 | lttng_ust_common_ctor(); | |
2913 | ||
14e0a135 MD |
2914 | lttng_ust_ring_buffer_clients_init(); |
2915 | lttng_ust_counter_clients_init(); | |
03d2d293 | 2916 | lib_ringbuffer_signal_init(); |
74d81a6c MD |
2917 | } |
2918 | ||
c589eca2 | 2919 | static |
249cffb5 | 2920 | void lttng_ust_ctl_exit(void) |
c589eca2 MJ |
2921 | __attribute__((destructor)); |
2922 | static | |
249cffb5 | 2923 | void lttng_ust_ctl_exit(void) |
74d81a6c | 2924 | { |
14e0a135 MD |
2925 | lttng_ust_counter_clients_exit(); |
2926 | lttng_ust_ring_buffer_clients_exit(); | |
57773204 | 2927 | } |