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" |
6339062a | 30 | #include "lib/lttng-ust/lttng-rb-clients.h" |
5ef57f0b | 31 | #include "common/clock.h" |
910dcd72 | 32 | #include "common/getenv.h" |
6339062a MJ |
33 | #include "lib/lttng-ust/lttng-tracer-core.h" |
34 | #include "lib/lttng-ust/lttng-counter-client.h" | |
c80497fe | 35 | |
74cc1f59 | 36 | #include "common/smp.h" |
cdff92e0 | 37 | #include "common/counter/counter.h" |
ebabbf58 | 38 | |
c9023c93 MD |
39 | /* |
40 | * Number of milliseconds to retry before failing metadata writes on | |
41 | * buffer full condition. (10 seconds) | |
42 | */ | |
43 | #define LTTNG_METADATA_TIMEOUT_MSEC 10000 | |
57773204 | 44 | |
74d81a6c MD |
45 | /* |
46 | * Channel representation within consumer. | |
47 | */ | |
48 | struct ustctl_consumer_channel { | |
e7bc0ef6 | 49 | struct lttng_ust_channel_buffer *chan; /* lttng channel buffers */ |
6b120308 | 50 | |
74d81a6c MD |
51 | /* initial attributes */ |
52 | struct ustctl_consumer_channel_attr attr; | |
ff0f5728 MD |
53 | int wait_fd; /* monitor close() */ |
54 | int wakeup_fd; /* monitor close() */ | |
74d81a6c MD |
55 | }; |
56 | ||
57 | /* | |
58 | * Stream representation within consumer. | |
59 | */ | |
60 | struct ustctl_consumer_stream { | |
b5457df5 | 61 | struct lttng_ust_ring_buffer *buf; |
74d81a6c MD |
62 | struct ustctl_consumer_channel *chan; |
63 | int shm_fd, wait_fd, wakeup_fd; | |
64 | int cpu; | |
65 | uint64_t memory_map_size; | |
66 | }; | |
67 | ||
ebabbf58 MD |
68 | #define USTCTL_COUNTER_ATTR_DIMENSION_MAX 8 |
69 | struct ustctl_counter_attr { | |
70 | enum ustctl_counter_arithmetic arithmetic; | |
71 | enum ustctl_counter_bitness bitness; | |
72 | uint32_t nr_dimensions; | |
73 | int64_t global_sum_step; | |
74 | struct ustctl_counter_dimension dimensions[USTCTL_COUNTER_ATTR_DIMENSION_MAX]; | |
81bc4972 | 75 | bool coalesce_hits; |
ebabbf58 MD |
76 | }; |
77 | ||
78 | /* | |
79 | * Counter representation within daemon. | |
80 | */ | |
81 | struct ustctl_daemon_counter { | |
82 | struct lib_counter *counter; | |
83 | const struct lttng_counter_ops *ops; | |
84 | struct ustctl_counter_attr *attr; /* initial attributes */ | |
85 | }; | |
86 | ||
2be0e72c MD |
87 | int ustctl_release_handle(int sock, int handle) |
88 | { | |
89 | struct ustcomm_ust_msg lum; | |
90 | struct ustcomm_ust_reply lur; | |
2be0e72c | 91 | |
74d81a6c MD |
92 | if (sock < 0 || handle < 0) |
93 | return 0; | |
94 | memset(&lum, 0, sizeof(lum)); | |
95 | lum.handle = handle; | |
fd17d7ce | 96 | lum.cmd = LTTNG_UST_ABI_RELEASE; |
74d81a6c | 97 | return ustcomm_send_app_cmd(sock, &lum, &lur); |
2be0e72c | 98 | } |
74d81a6c | 99 | |
12388166 MD |
100 | /* |
101 | * If sock is negative, it means we don't have to notify the other side | |
102 | * (e.g. application has already vanished). | |
103 | */ | |
fd17d7ce | 104 | int ustctl_release_object(int sock, struct lttng_ust_abi_object_data *data) |
57773204 | 105 | { |
57773204 MD |
106 | int ret; |
107 | ||
9bfc503d MD |
108 | if (!data) |
109 | return -EINVAL; | |
110 | ||
74d81a6c | 111 | switch (data->type) { |
fd17d7ce | 112 | case LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL: |
ff0f5728 MD |
113 | if (data->u.channel.wakeup_fd >= 0) { |
114 | ret = close(data->u.channel.wakeup_fd); | |
115 | if (ret < 0) { | |
116 | ret = -errno; | |
117 | return ret; | |
118 | } | |
dd6c697c | 119 | data->u.channel.wakeup_fd = -1; |
ff0f5728 | 120 | } |
74d81a6c | 121 | free(data->u.channel.data); |
dd6c697c | 122 | data->u.channel.data = NULL; |
74d81a6c | 123 | break; |
fd17d7ce | 124 | case LTTNG_UST_ABI_OBJECT_TYPE_STREAM: |
74d81a6c MD |
125 | if (data->u.stream.shm_fd >= 0) { |
126 | ret = close(data->u.stream.shm_fd); | |
127 | if (ret < 0) { | |
128 | ret = -errno; | |
129 | return ret; | |
130 | } | |
dd6c697c | 131 | data->u.stream.shm_fd = -1; |
d26228ae | 132 | } |
74d81a6c MD |
133 | if (data->u.stream.wakeup_fd >= 0) { |
134 | ret = close(data->u.stream.wakeup_fd); | |
135 | if (ret < 0) { | |
136 | ret = -errno; | |
137 | return ret; | |
138 | } | |
dd6c697c | 139 | data->u.stream.wakeup_fd = -1; |
d26228ae | 140 | } |
74d81a6c | 141 | break; |
fd17d7ce MD |
142 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT: |
143 | case LTTNG_UST_ABI_OBJECT_TYPE_CONTEXT: | |
144 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER_GROUP: | |
145 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER: | |
32ce8569 | 146 | break; |
fd17d7ce | 147 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER: |
ebabbf58 MD |
148 | free(data->u.counter.data); |
149 | data->u.counter.data = NULL; | |
150 | break; | |
fd17d7ce | 151 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL: |
ebabbf58 MD |
152 | if (data->u.counter_global.shm_fd >= 0) { |
153 | ret = close(data->u.counter_global.shm_fd); | |
154 | if (ret < 0) { | |
155 | ret = -errno; | |
156 | return ret; | |
157 | } | |
158 | data->u.counter_global.shm_fd = -1; | |
159 | } | |
160 | break; | |
fd17d7ce | 161 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU: |
ebabbf58 MD |
162 | if (data->u.counter_cpu.shm_fd >= 0) { |
163 | ret = close(data->u.counter_cpu.shm_fd); | |
164 | if (ret < 0) { | |
165 | ret = -errno; | |
166 | return ret; | |
167 | } | |
168 | data->u.counter_cpu.shm_fd = -1; | |
169 | } | |
170 | break; | |
74d81a6c MD |
171 | default: |
172 | assert(0); | |
d26228ae | 173 | } |
2be0e72c | 174 | return ustctl_release_handle(sock, data->handle); |
57773204 MD |
175 | } |
176 | ||
1c5e467e MD |
177 | /* |
178 | * Send registration done packet to the application. | |
179 | */ | |
180 | int ustctl_register_done(int sock) | |
181 | { | |
182 | struct ustcomm_ust_msg lum; | |
183 | struct ustcomm_ust_reply lur; | |
184 | int ret; | |
185 | ||
186 | DBG("Sending register done command to %d", sock); | |
187 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
188 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
189 | lum.cmd = LTTNG_UST_ABI_REGISTER_DONE; | |
1c5e467e MD |
190 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
191 | if (ret) | |
192 | return ret; | |
1c5e467e | 193 | return 0; |
1c5e467e MD |
194 | } |
195 | ||
57773204 MD |
196 | /* |
197 | * returns session handle. | |
198 | */ | |
199 | int ustctl_create_session(int sock) | |
200 | { | |
201 | struct ustcomm_ust_msg lum; | |
202 | struct ustcomm_ust_reply lur; | |
203 | int ret, session_handle; | |
204 | ||
205 | /* Create session */ | |
206 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
207 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
208 | lum.cmd = LTTNG_UST_ABI_SESSION; | |
57773204 MD |
209 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
210 | if (ret) | |
211 | return ret; | |
212 | session_handle = lur.ret_val; | |
213 | DBG("received session handle %u", session_handle); | |
214 | return session_handle; | |
215 | } | |
216 | ||
fd17d7ce MD |
217 | int ustctl_create_event(int sock, struct lttng_ust_abi_event *ev, |
218 | struct lttng_ust_abi_object_data *channel_data, | |
219 | struct lttng_ust_abi_object_data **_event_data) | |
57773204 MD |
220 | { |
221 | struct ustcomm_ust_msg lum; | |
222 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 223 | struct lttng_ust_abi_object_data *event_data; |
57773204 MD |
224 | int ret; |
225 | ||
9bfc503d MD |
226 | if (!channel_data || !_event_data) |
227 | return -EINVAL; | |
228 | ||
74d81a6c | 229 | event_data = zmalloc(sizeof(*event_data)); |
57773204 MD |
230 | if (!event_data) |
231 | return -ENOMEM; | |
fd17d7ce | 232 | event_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT; |
57773204 MD |
233 | memset(&lum, 0, sizeof(lum)); |
234 | lum.handle = channel_data->handle; | |
fd17d7ce | 235 | lum.cmd = LTTNG_UST_ABI_EVENT; |
57773204 | 236 | strncpy(lum.u.event.name, ev->name, |
fd17d7ce | 237 | LTTNG_UST_ABI_SYM_NAME_LEN); |
57773204 | 238 | lum.u.event.instrumentation = ev->instrumentation; |
457a6b58 MD |
239 | lum.u.event.loglevel_type = ev->loglevel_type; |
240 | lum.u.event.loglevel = ev->loglevel; | |
57773204 MD |
241 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
242 | if (ret) { | |
243 | free(event_data); | |
244 | return ret; | |
245 | } | |
246 | event_data->handle = lur.ret_val; | |
247 | DBG("received event handle %u", event_data->handle); | |
248 | *_event_data = event_data; | |
249 | return 0; | |
250 | } | |
251 | ||
53f0df51 | 252 | int ustctl_add_context(int sock, struct lttng_ust_context_attr *ctx, |
fd17d7ce MD |
253 | struct lttng_ust_abi_object_data *obj_data, |
254 | struct lttng_ust_abi_object_data **_context_data) | |
57773204 MD |
255 | { |
256 | struct ustcomm_ust_msg lum; | |
257 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 258 | struct lttng_ust_abi_object_data *context_data = NULL; |
53f0df51 JG |
259 | char *buf = NULL; |
260 | size_t len; | |
57773204 MD |
261 | int ret; |
262 | ||
53f0df51 JG |
263 | if (!obj_data || !_context_data) { |
264 | ret = -EINVAL; | |
265 | goto end; | |
266 | } | |
9bfc503d | 267 | |
74d81a6c | 268 | context_data = zmalloc(sizeof(*context_data)); |
53f0df51 JG |
269 | if (!context_data) { |
270 | ret = -ENOMEM; | |
271 | goto end; | |
272 | } | |
fd17d7ce | 273 | context_data->type = LTTNG_UST_ABI_OBJECT_TYPE_CONTEXT; |
57773204 | 274 | memset(&lum, 0, sizeof(lum)); |
3039d8ed | 275 | lum.handle = obj_data->handle; |
fd17d7ce | 276 | lum.cmd = LTTNG_UST_ABI_CONTEXT; |
53f0df51 JG |
277 | |
278 | lum.u.context.ctx = ctx->ctx; | |
279 | switch (ctx->ctx) { | |
fd17d7ce | 280 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
53f0df51 JG |
281 | lum.u.context.u.perf_counter = ctx->u.perf_counter; |
282 | break; | |
fd17d7ce | 283 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
53f0df51 JG |
284 | { |
285 | size_t provider_name_len = strlen( | |
286 | ctx->u.app_ctx.provider_name) + 1; | |
287 | size_t ctx_name_len = strlen(ctx->u.app_ctx.ctx_name) + 1; | |
288 | ||
289 | lum.u.context.u.app_ctx.provider_name_len = provider_name_len; | |
290 | lum.u.context.u.app_ctx.ctx_name_len = ctx_name_len; | |
291 | ||
292 | len = provider_name_len + ctx_name_len; | |
293 | buf = zmalloc(len); | |
294 | if (!buf) { | |
295 | ret = -ENOMEM; | |
296 | goto end; | |
297 | } | |
298 | memcpy(buf, ctx->u.app_ctx.provider_name, | |
299 | provider_name_len); | |
300 | memcpy(buf + provider_name_len, ctx->u.app_ctx.ctx_name, | |
301 | ctx_name_len); | |
302 | break; | |
303 | } | |
304 | default: | |
305 | break; | |
306 | } | |
307 | ret = ustcomm_send_app_msg(sock, &lum); | |
308 | if (ret) | |
309 | goto end; | |
310 | if (buf) { | |
311 | /* send var len ctx_name */ | |
312 | ret = ustcomm_send_unix_sock(sock, buf, len); | |
313 | if (ret < 0) { | |
314 | goto end; | |
315 | } | |
316 | if (ret != len) { | |
317 | ret = -EINVAL; | |
318 | goto end; | |
319 | } | |
320 | } | |
321 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
322 | if (ret < 0) { | |
323 | goto end; | |
57773204 | 324 | } |
32ce8569 MD |
325 | context_data->handle = -1; |
326 | DBG("Context created successfully"); | |
57773204 | 327 | *_context_data = context_data; |
53f0df51 JG |
328 | context_data = NULL; |
329 | end: | |
330 | free(context_data); | |
331 | free(buf); | |
57773204 MD |
332 | return ret; |
333 | } | |
334 | ||
fd17d7ce MD |
335 | int ustctl_set_filter(int sock, struct lttng_ust_abi_filter_bytecode *bytecode, |
336 | struct lttng_ust_abi_object_data *obj_data) | |
cd54f6d9 MD |
337 | { |
338 | struct ustcomm_ust_msg lum; | |
339 | struct ustcomm_ust_reply lur; | |
340 | int ret; | |
341 | ||
342 | if (!obj_data) | |
343 | return -EINVAL; | |
344 | ||
345 | memset(&lum, 0, sizeof(lum)); | |
346 | lum.handle = obj_data->handle; | |
fd17d7ce | 347 | lum.cmd = LTTNG_UST_ABI_FILTER; |
cd54f6d9 MD |
348 | lum.u.filter.data_size = bytecode->len; |
349 | lum.u.filter.reloc_offset = bytecode->reloc_offset; | |
e695af51 | 350 | lum.u.filter.seqnum = bytecode->seqnum; |
cd54f6d9 MD |
351 | |
352 | ret = ustcomm_send_app_msg(sock, &lum); | |
d37ecb3f FD |
353 | if (ret) |
354 | return ret; | |
355 | /* send var len bytecode */ | |
356 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
357 | bytecode->len); | |
358 | if (ret < 0) { | |
359 | return ret; | |
360 | } | |
361 | if (ret != bytecode->len) | |
362 | return -EINVAL; | |
363 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
364 | } | |
365 | ||
fd17d7ce MD |
366 | int ustctl_set_capture(int sock, struct lttng_ust_abi_capture_bytecode *bytecode, |
367 | struct lttng_ust_abi_object_data *obj_data) | |
d37ecb3f FD |
368 | { |
369 | struct ustcomm_ust_msg lum; | |
370 | struct ustcomm_ust_reply lur; | |
371 | int ret; | |
372 | ||
373 | if (!obj_data) | |
374 | return -EINVAL; | |
375 | ||
376 | memset(&lum, 0, sizeof(lum)); | |
377 | lum.handle = obj_data->handle; | |
fd17d7ce | 378 | lum.cmd = LTTNG_UST_ABI_CAPTURE; |
d37ecb3f FD |
379 | lum.u.capture.data_size = bytecode->len; |
380 | lum.u.capture.reloc_offset = bytecode->reloc_offset; | |
381 | lum.u.capture.seqnum = bytecode->seqnum; | |
382 | ||
383 | ret = ustcomm_send_app_msg(sock, &lum); | |
cd54f6d9 MD |
384 | if (ret) |
385 | return ret; | |
cd54f6d9 MD |
386 | /* send var len bytecode */ |
387 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
388 | bytecode->len); | |
389 | if (ret < 0) { | |
390 | return ret; | |
391 | } | |
7bc53e94 MD |
392 | if (ret != bytecode->len) |
393 | return -EINVAL; | |
394 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
cd54f6d9 MD |
395 | } |
396 | ||
fd17d7ce MD |
397 | int ustctl_set_exclusion(int sock, struct lttng_ust_abi_event_exclusion *exclusion, |
398 | struct lttng_ust_abi_object_data *obj_data) | |
da57c034 JI |
399 | { |
400 | struct ustcomm_ust_msg lum; | |
401 | struct ustcomm_ust_reply lur; | |
402 | int ret; | |
403 | ||
404 | if (!obj_data) { | |
405 | return -EINVAL; | |
406 | } | |
407 | ||
408 | memset(&lum, 0, sizeof(lum)); | |
409 | lum.handle = obj_data->handle; | |
fd17d7ce | 410 | lum.cmd = LTTNG_UST_ABI_EXCLUSION; |
da57c034 JI |
411 | lum.u.exclusion.count = exclusion->count; |
412 | ||
413 | ret = ustcomm_send_app_msg(sock, &lum); | |
414 | if (ret) { | |
415 | return ret; | |
416 | } | |
417 | ||
1628366f | 418 | /* send var len exclusion names */ |
da57c034 JI |
419 | ret = ustcomm_send_unix_sock(sock, |
420 | exclusion->names, | |
fd17d7ce | 421 | exclusion->count * LTTNG_UST_ABI_SYM_NAME_LEN); |
da57c034 JI |
422 | if (ret < 0) { |
423 | return ret; | |
424 | } | |
fd17d7ce | 425 | if (ret != exclusion->count * LTTNG_UST_ABI_SYM_NAME_LEN) { |
da57c034 JI |
426 | return -EINVAL; |
427 | } | |
428 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
429 | } | |
430 | ||
57773204 | 431 | /* Enable event, channel and session ioctl */ |
fd17d7ce | 432 | int ustctl_enable(int sock, struct lttng_ust_abi_object_data *object) |
57773204 MD |
433 | { |
434 | struct ustcomm_ust_msg lum; | |
435 | struct ustcomm_ust_reply lur; | |
436 | int ret; | |
437 | ||
9bfc503d MD |
438 | if (!object) |
439 | return -EINVAL; | |
440 | ||
57773204 MD |
441 | memset(&lum, 0, sizeof(lum)); |
442 | lum.handle = object->handle; | |
fd17d7ce | 443 | lum.cmd = LTTNG_UST_ABI_ENABLE; |
57773204 MD |
444 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
445 | if (ret) | |
446 | return ret; | |
447 | DBG("enabled handle %u", object->handle); | |
448 | return 0; | |
449 | } | |
450 | ||
451 | /* Disable event, channel and session ioctl */ | |
fd17d7ce | 452 | int ustctl_disable(int sock, struct lttng_ust_abi_object_data *object) |
57773204 MD |
453 | { |
454 | struct ustcomm_ust_msg lum; | |
455 | struct ustcomm_ust_reply lur; | |
456 | int ret; | |
457 | ||
9bfc503d MD |
458 | if (!object) |
459 | return -EINVAL; | |
460 | ||
57773204 MD |
461 | memset(&lum, 0, sizeof(lum)); |
462 | lum.handle = object->handle; | |
fd17d7ce | 463 | lum.cmd = LTTNG_UST_ABI_DISABLE; |
57773204 MD |
464 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
465 | if (ret) | |
466 | return ret; | |
467 | DBG("disable handle %u", object->handle); | |
468 | return 0; | |
469 | } | |
470 | ||
4a6ca058 | 471 | int ustctl_start_session(int sock, int handle) |
57773204 | 472 | { |
fd17d7ce | 473 | struct lttng_ust_abi_object_data obj; |
4a6ca058 MD |
474 | |
475 | obj.handle = handle; | |
476 | return ustctl_enable(sock, &obj); | |
57773204 MD |
477 | } |
478 | ||
4a6ca058 | 479 | int ustctl_stop_session(int sock, int handle) |
57773204 | 480 | { |
fd17d7ce | 481 | struct lttng_ust_abi_object_data obj; |
4a6ca058 MD |
482 | |
483 | obj.handle = handle; | |
484 | return ustctl_disable(sock, &obj); | |
57773204 MD |
485 | } |
486 | ||
d8d2416d | 487 | int ustctl_create_event_notifier_group(int sock, int pipe_fd, |
fd17d7ce | 488 | struct lttng_ust_abi_object_data **_event_notifier_group_data) |
d8d2416d | 489 | { |
fd17d7ce | 490 | struct lttng_ust_abi_object_data *event_notifier_group_data; |
d8d2416d FD |
491 | struct ustcomm_ust_msg lum; |
492 | struct ustcomm_ust_reply lur; | |
493 | ssize_t len; | |
494 | int ret; | |
495 | ||
496 | if (!_event_notifier_group_data) | |
497 | return -EINVAL; | |
498 | ||
499 | event_notifier_group_data = zmalloc(sizeof(*event_notifier_group_data)); | |
500 | if (!event_notifier_group_data) | |
501 | return -ENOMEM; | |
502 | ||
fd17d7ce | 503 | event_notifier_group_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER_GROUP; |
d8d2416d FD |
504 | |
505 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
506 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
507 | lum.cmd = LTTNG_UST_ABI_EVENT_NOTIFIER_GROUP_CREATE; | |
d8d2416d FD |
508 | |
509 | ret = ustcomm_send_app_msg(sock, &lum); | |
510 | if (ret) | |
511 | goto error; | |
512 | ||
513 | /* Send event_notifier notification pipe. */ | |
514 | len = ustcomm_send_fds_unix_sock(sock, &pipe_fd, 1); | |
515 | if (len <= 0) { | |
516 | ret = len; | |
517 | goto error; | |
518 | } | |
519 | ||
520 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
521 | if (ret) | |
522 | goto error; | |
523 | ||
524 | event_notifier_group_data->handle = lur.ret_val; | |
525 | DBG("received event_notifier group handle %d", event_notifier_group_data->handle); | |
526 | ||
527 | *_event_notifier_group_data = event_notifier_group_data; | |
528 | ||
529 | ret = 0; | |
530 | goto end; | |
531 | error: | |
532 | free(event_notifier_group_data); | |
533 | ||
534 | end: | |
535 | return ret; | |
536 | } | |
537 | ||
fd17d7ce MD |
538 | int ustctl_create_event_notifier(int sock, struct lttng_ust_abi_event_notifier *event_notifier, |
539 | struct lttng_ust_abi_object_data *event_notifier_group, | |
540 | struct lttng_ust_abi_object_data **_event_notifier_data) | |
d8d2416d FD |
541 | { |
542 | struct ustcomm_ust_msg lum; | |
543 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 544 | struct lttng_ust_abi_object_data *event_notifier_data; |
8406222c | 545 | ssize_t len; |
d8d2416d FD |
546 | int ret; |
547 | ||
548 | if (!event_notifier_group || !_event_notifier_data) | |
549 | return -EINVAL; | |
550 | ||
551 | event_notifier_data = zmalloc(sizeof(*event_notifier_data)); | |
552 | if (!event_notifier_data) | |
553 | return -ENOMEM; | |
554 | ||
fd17d7ce | 555 | event_notifier_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER; |
d8d2416d FD |
556 | |
557 | memset(&lum, 0, sizeof(lum)); | |
558 | lum.handle = event_notifier_group->handle; | |
fd17d7ce | 559 | lum.cmd = LTTNG_UST_ABI_EVENT_NOTIFIER_CREATE; |
8406222c | 560 | lum.u.event_notifier.len = sizeof(*event_notifier); |
d8d2416d | 561 | |
41844673 | 562 | ret = ustcomm_send_app_msg(sock, &lum); |
d8d2416d FD |
563 | if (ret) { |
564 | free(event_notifier_data); | |
565 | return ret; | |
566 | } | |
31624f6c | 567 | /* Send struct lttng_ust_abi_event_notifier */ |
8406222c MD |
568 | len = ustcomm_send_unix_sock(sock, event_notifier, sizeof(*event_notifier)); |
569 | if (len != sizeof(*event_notifier)) { | |
4c4f4917 | 570 | free(event_notifier_data); |
8406222c MD |
571 | if (len < 0) |
572 | return len; | |
573 | else | |
574 | return -EIO; | |
575 | } | |
41844673 MD |
576 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); |
577 | if (ret) { | |
578 | free(event_notifier_data); | |
579 | return ret; | |
580 | } | |
d8d2416d FD |
581 | event_notifier_data->handle = lur.ret_val; |
582 | DBG("received event_notifier handle %u", event_notifier_data->handle); | |
583 | *_event_notifier_data = event_notifier_data; | |
584 | ||
585 | return ret; | |
586 | } | |
587 | ||
57773204 MD |
588 | int ustctl_tracepoint_list(int sock) |
589 | { | |
b115631f MD |
590 | struct ustcomm_ust_msg lum; |
591 | struct ustcomm_ust_reply lur; | |
592 | int ret, tp_list_handle; | |
593 | ||
594 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
595 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
596 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_LIST; | |
b115631f MD |
597 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
598 | if (ret) | |
599 | return ret; | |
600 | tp_list_handle = lur.ret_val; | |
601 | DBG("received tracepoint list handle %u", tp_list_handle); | |
602 | return tp_list_handle; | |
603 | } | |
604 | ||
605 | int ustctl_tracepoint_list_get(int sock, int tp_list_handle, | |
fd17d7ce | 606 | struct lttng_ust_abi_tracepoint_iter *iter) |
b115631f MD |
607 | { |
608 | struct ustcomm_ust_msg lum; | |
609 | struct ustcomm_ust_reply lur; | |
610 | int ret; | |
611 | ||
9bfc503d MD |
612 | if (!iter) |
613 | return -EINVAL; | |
614 | ||
b115631f MD |
615 | memset(&lum, 0, sizeof(lum)); |
616 | lum.handle = tp_list_handle; | |
fd17d7ce | 617 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_LIST_GET; |
b115631f MD |
618 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
619 | if (ret) | |
620 | return ret; | |
882a56d7 | 621 | DBG("received tracepoint list entry name %s loglevel %d", |
cbef6901 | 622 | lur.u.tracepoint.name, |
882a56d7 | 623 | lur.u.tracepoint.loglevel); |
cbef6901 | 624 | memcpy(iter, &lur.u.tracepoint, sizeof(*iter)); |
b115631f | 625 | return 0; |
57773204 MD |
626 | } |
627 | ||
40003310 MD |
628 | int ustctl_tracepoint_field_list(int sock) |
629 | { | |
630 | struct ustcomm_ust_msg lum; | |
631 | struct ustcomm_ust_reply lur; | |
632 | int ret, tp_field_list_handle; | |
633 | ||
634 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
635 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
636 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_FIELD_LIST; | |
40003310 MD |
637 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
638 | if (ret) | |
639 | return ret; | |
640 | tp_field_list_handle = lur.ret_val; | |
641 | DBG("received tracepoint field list handle %u", tp_field_list_handle); | |
642 | return tp_field_list_handle; | |
643 | } | |
644 | ||
645 | int ustctl_tracepoint_field_list_get(int sock, int tp_field_list_handle, | |
fd17d7ce | 646 | struct lttng_ust_abi_field_iter *iter) |
40003310 MD |
647 | { |
648 | struct ustcomm_ust_msg lum; | |
649 | struct ustcomm_ust_reply lur; | |
650 | int ret; | |
651 | ssize_t len; | |
652 | ||
653 | if (!iter) | |
654 | return -EINVAL; | |
655 | ||
656 | memset(&lum, 0, sizeof(lum)); | |
657 | lum.handle = tp_field_list_handle; | |
fd17d7ce | 658 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_FIELD_LIST_GET; |
40003310 MD |
659 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
660 | if (ret) | |
661 | return ret; | |
662 | len = ustcomm_recv_unix_sock(sock, iter, sizeof(*iter)); | |
663 | if (len != sizeof(*iter)) { | |
664 | return -EINVAL; | |
665 | } | |
666 | DBG("received tracepoint field list entry event_name %s event_loglevel %d field_name %s field_type %d", | |
667 | iter->event_name, | |
668 | iter->loglevel, | |
669 | iter->field_name, | |
670 | iter->type); | |
671 | return 0; | |
672 | } | |
673 | ||
fd17d7ce | 674 | int ustctl_tracer_version(int sock, struct lttng_ust_abi_tracer_version *v) |
57773204 MD |
675 | { |
676 | struct ustcomm_ust_msg lum; | |
677 | struct ustcomm_ust_reply lur; | |
678 | int ret; | |
679 | ||
9bfc503d MD |
680 | if (!v) |
681 | return -EINVAL; | |
682 | ||
57773204 | 683 | memset(&lum, 0, sizeof(lum)); |
fd17d7ce MD |
684 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
685 | lum.cmd = LTTNG_UST_ABI_TRACER_VERSION; | |
57773204 MD |
686 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
687 | if (ret) | |
688 | return ret; | |
689 | memcpy(v, &lur.u.version, sizeof(*v)); | |
690 | DBG("received tracer version"); | |
691 | return 0; | |
692 | } | |
693 | ||
694 | int ustctl_wait_quiescent(int sock) | |
695 | { | |
696 | struct ustcomm_ust_msg lum; | |
697 | struct ustcomm_ust_reply lur; | |
698 | int ret; | |
699 | ||
700 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
701 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
702 | lum.cmd = LTTNG_UST_ABI_WAIT_QUIESCENT; | |
57773204 MD |
703 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
704 | if (ret) | |
705 | return ret; | |
706 | DBG("waited for quiescent state"); | |
707 | return 0; | |
708 | } | |
709 | ||
2208d8b5 MJ |
710 | int ustctl_calibrate(int sock __attribute__((unused)), |
711 | struct lttng_ust_abi_calibrate *calibrate) | |
57773204 | 712 | { |
9bfc503d MD |
713 | if (!calibrate) |
714 | return -EINVAL; | |
715 | ||
57773204 MD |
716 | return -ENOSYS; |
717 | } | |
718 | ||
fd17d7ce | 719 | int ustctl_sock_flush_buffer(int sock, struct lttng_ust_abi_object_data *object) |
f1fffc57 MD |
720 | { |
721 | struct ustcomm_ust_msg lum; | |
722 | struct ustcomm_ust_reply lur; | |
723 | int ret; | |
724 | ||
9bfc503d MD |
725 | if (!object) |
726 | return -EINVAL; | |
727 | ||
f1fffc57 MD |
728 | memset(&lum, 0, sizeof(lum)); |
729 | lum.handle = object->handle; | |
fd17d7ce | 730 | lum.cmd = LTTNG_UST_ABI_FLUSH_BUFFER; |
f1fffc57 MD |
731 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
732 | if (ret) | |
733 | return ret; | |
734 | DBG("flushed buffer handle %u", object->handle); | |
735 | return 0; | |
736 | } | |
737 | ||
74d81a6c MD |
738 | static |
739 | int ustctl_send_channel(int sock, | |
fd17d7ce | 740 | enum lttng_ust_abi_chan_type type, |
74d81a6c MD |
741 | void *data, |
742 | uint64_t size, | |
ff0f5728 | 743 | int wakeup_fd, |
74d81a6c MD |
744 | int send_fd_only) |
745 | { | |
746 | ssize_t len; | |
747 | ||
748 | if (!send_fd_only) { | |
749 | /* Send mmap size */ | |
750 | len = ustcomm_send_unix_sock(sock, &size, sizeof(size)); | |
751 | if (len != sizeof(size)) { | |
752 | if (len < 0) | |
753 | return len; | |
754 | else | |
755 | return -EIO; | |
756 | } | |
757 | ||
758 | /* Send channel type */ | |
759 | len = ustcomm_send_unix_sock(sock, &type, sizeof(type)); | |
760 | if (len != sizeof(type)) { | |
761 | if (len < 0) | |
762 | return len; | |
763 | else | |
764 | return -EIO; | |
765 | } | |
766 | } | |
767 | ||
768 | /* Send channel data */ | |
769 | len = ustcomm_send_unix_sock(sock, data, size); | |
770 | if (len != size) { | |
771 | if (len < 0) | |
772 | return len; | |
773 | else | |
774 | return -EIO; | |
775 | } | |
57773204 | 776 | |
ff0f5728 MD |
777 | /* Send wakeup fd */ |
778 | len = ustcomm_send_fds_unix_sock(sock, &wakeup_fd, 1); | |
779 | if (len <= 0) { | |
780 | if (len < 0) | |
781 | return len; | |
782 | else | |
783 | return -EIO; | |
784 | } | |
74d81a6c MD |
785 | return 0; |
786 | } | |
787 | ||
788 | static | |
789 | int ustctl_send_stream(int sock, | |
790 | uint32_t stream_nr, | |
791 | uint64_t memory_map_size, | |
792 | int shm_fd, int wakeup_fd, | |
793 | int send_fd_only) | |
57773204 | 794 | { |
74d81a6c MD |
795 | ssize_t len; |
796 | int fds[2]; | |
797 | ||
798 | if (!send_fd_only) { | |
799 | if (shm_fd < 0) { | |
800 | /* finish iteration */ | |
801 | uint64_t v = -1; | |
802 | ||
803 | len = ustcomm_send_unix_sock(sock, &v, sizeof(v)); | |
804 | if (len != sizeof(v)) { | |
805 | if (len < 0) | |
806 | return len; | |
807 | else | |
808 | return -EIO; | |
809 | } | |
810 | return 0; | |
811 | } | |
812 | ||
813 | /* Send mmap size */ | |
814 | len = ustcomm_send_unix_sock(sock, &memory_map_size, | |
815 | sizeof(memory_map_size)); | |
816 | if (len != sizeof(memory_map_size)) { | |
817 | if (len < 0) | |
818 | return len; | |
819 | else | |
820 | return -EIO; | |
821 | } | |
822 | ||
823 | /* Send stream nr */ | |
824 | len = ustcomm_send_unix_sock(sock, &stream_nr, | |
825 | sizeof(stream_nr)); | |
826 | if (len != sizeof(stream_nr)) { | |
827 | if (len < 0) | |
828 | return len; | |
829 | else | |
830 | return -EIO; | |
831 | } | |
832 | } | |
833 | ||
834 | /* Send shm fd and wakeup fd */ | |
835 | fds[0] = shm_fd; | |
836 | fds[1] = wakeup_fd; | |
837 | len = ustcomm_send_fds_unix_sock(sock, fds, 2); | |
838 | if (len <= 0) { | |
839 | if (len < 0) | |
840 | return len; | |
841 | else | |
842 | return -EIO; | |
843 | } | |
844 | return 0; | |
845 | } | |
846 | ||
847 | int ustctl_recv_channel_from_consumer(int sock, | |
fd17d7ce | 848 | struct lttng_ust_abi_object_data **_channel_data) |
74d81a6c | 849 | { |
fd17d7ce | 850 | struct lttng_ust_abi_object_data *channel_data; |
74d81a6c | 851 | ssize_t len; |
ff0f5728 | 852 | int wakeup_fd; |
7a784989 | 853 | int ret; |
57773204 | 854 | |
74d81a6c MD |
855 | channel_data = zmalloc(sizeof(*channel_data)); |
856 | if (!channel_data) { | |
857 | ret = -ENOMEM; | |
858 | goto error_alloc; | |
859 | } | |
fd17d7ce | 860 | channel_data->type = LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL; |
12f3dabc | 861 | channel_data->handle = -1; |
74d81a6c MD |
862 | |
863 | /* recv mmap size */ | |
864 | len = ustcomm_recv_unix_sock(sock, &channel_data->size, | |
865 | sizeof(channel_data->size)); | |
866 | if (len != sizeof(channel_data->size)) { | |
867 | if (len < 0) | |
868 | ret = len; | |
869 | else | |
870 | ret = -EINVAL; | |
871 | goto error; | |
872 | } | |
9bfc503d | 873 | |
74d81a6c MD |
874 | /* recv channel type */ |
875 | len = ustcomm_recv_unix_sock(sock, &channel_data->u.channel.type, | |
876 | sizeof(channel_data->u.channel.type)); | |
877 | if (len != sizeof(channel_data->u.channel.type)) { | |
878 | if (len < 0) | |
879 | ret = len; | |
880 | else | |
881 | ret = -EINVAL; | |
882 | goto error; | |
883 | } | |
884 | ||
885 | /* recv channel data */ | |
886 | channel_data->u.channel.data = zmalloc(channel_data->size); | |
887 | if (!channel_data->u.channel.data) { | |
888 | ret = -ENOMEM; | |
889 | goto error; | |
890 | } | |
891 | len = ustcomm_recv_unix_sock(sock, channel_data->u.channel.data, | |
892 | channel_data->size); | |
893 | if (len != channel_data->size) { | |
894 | if (len < 0) | |
895 | ret = len; | |
896 | else | |
897 | ret = -EINVAL; | |
898 | goto error_recv_data; | |
899 | } | |
ff0f5728 MD |
900 | /* recv wakeup fd */ |
901 | len = ustcomm_recv_fds_unix_sock(sock, &wakeup_fd, 1); | |
902 | if (len <= 0) { | |
903 | if (len < 0) { | |
904 | ret = len; | |
905 | goto error_recv_data; | |
906 | } else { | |
907 | ret = -EIO; | |
908 | goto error_recv_data; | |
909 | } | |
910 | } | |
911 | channel_data->u.channel.wakeup_fd = wakeup_fd; | |
74d81a6c MD |
912 | *_channel_data = channel_data; |
913 | return 0; | |
914 | ||
915 | error_recv_data: | |
916 | free(channel_data->u.channel.data); | |
917 | error: | |
918 | free(channel_data); | |
919 | error_alloc: | |
920 | return ret; | |
921 | } | |
922 | ||
923 | int ustctl_recv_stream_from_consumer(int sock, | |
fd17d7ce | 924 | struct lttng_ust_abi_object_data **_stream_data) |
74d81a6c | 925 | { |
fd17d7ce | 926 | struct lttng_ust_abi_object_data *stream_data; |
74d81a6c MD |
927 | ssize_t len; |
928 | int ret; | |
929 | int fds[2]; | |
930 | ||
931 | stream_data = zmalloc(sizeof(*stream_data)); | |
932 | if (!stream_data) { | |
933 | ret = -ENOMEM; | |
934 | goto error_alloc; | |
57773204 | 935 | } |
74d81a6c | 936 | |
fd17d7ce | 937 | stream_data->type = LTTNG_UST_ABI_OBJECT_TYPE_STREAM; |
74d81a6c MD |
938 | stream_data->handle = -1; |
939 | ||
940 | /* recv mmap size */ | |
941 | len = ustcomm_recv_unix_sock(sock, &stream_data->size, | |
942 | sizeof(stream_data->size)); | |
943 | if (len != sizeof(stream_data->size)) { | |
944 | if (len < 0) | |
945 | ret = len; | |
946 | else | |
947 | ret = -EINVAL; | |
948 | goto error; | |
949 | } | |
950 | if (stream_data->size == -1) { | |
951 | ret = -LTTNG_UST_ERR_NOENT; | |
952 | goto error; | |
953 | } | |
954 | ||
955 | /* recv stream nr */ | |
956 | len = ustcomm_recv_unix_sock(sock, &stream_data->u.stream.stream_nr, | |
957 | sizeof(stream_data->u.stream.stream_nr)); | |
958 | if (len != sizeof(stream_data->u.stream.stream_nr)) { | |
959 | if (len < 0) | |
960 | ret = len; | |
961 | else | |
962 | ret = -EINVAL; | |
963 | goto error; | |
964 | } | |
965 | ||
966 | /* recv shm fd and wakeup fd */ | |
967 | len = ustcomm_recv_fds_unix_sock(sock, fds, 2); | |
968 | if (len <= 0) { | |
969 | if (len < 0) { | |
970 | ret = len; | |
971 | goto error; | |
972 | } else { | |
973 | ret = -EIO; | |
974 | goto error; | |
0bfe09ec | 975 | } |
0bfe09ec | 976 | } |
74d81a6c MD |
977 | stream_data->u.stream.shm_fd = fds[0]; |
978 | stream_data->u.stream.wakeup_fd = fds[1]; | |
979 | *_stream_data = stream_data; | |
980 | return 0; | |
0bfe09ec | 981 | |
74d81a6c MD |
982 | error: |
983 | free(stream_data); | |
984 | error_alloc: | |
985 | return ret; | |
986 | } | |
987 | ||
988 | int ustctl_send_channel_to_ust(int sock, int session_handle, | |
fd17d7ce | 989 | struct lttng_ust_abi_object_data *channel_data) |
74d81a6c MD |
990 | { |
991 | struct ustcomm_ust_msg lum; | |
992 | struct ustcomm_ust_reply lur; | |
993 | int ret; | |
994 | ||
995 | if (!channel_data) | |
996 | return -EINVAL; | |
997 | ||
998 | memset(&lum, 0, sizeof(lum)); | |
999 | lum.handle = session_handle; | |
fd17d7ce | 1000 | lum.cmd = LTTNG_UST_ABI_CHANNEL; |
74d81a6c MD |
1001 | lum.u.channel.len = channel_data->size; |
1002 | lum.u.channel.type = channel_data->u.channel.type; | |
1003 | ret = ustcomm_send_app_msg(sock, &lum); | |
1004 | if (ret) | |
1005 | return ret; | |
1006 | ||
1007 | ret = ustctl_send_channel(sock, | |
1008 | channel_data->u.channel.type, | |
1009 | channel_data->u.channel.data, | |
1010 | channel_data->size, | |
ff0f5728 | 1011 | channel_data->u.channel.wakeup_fd, |
74d81a6c MD |
1012 | 1); |
1013 | if (ret) | |
1014 | return ret; | |
1015 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1016 | if (!ret) { | |
7f2348b8 | 1017 | channel_data->handle = lur.ret_val; |
57773204 | 1018 | } |
74d81a6c MD |
1019 | return ret; |
1020 | } | |
1021 | ||
1022 | int ustctl_send_stream_to_ust(int sock, | |
fd17d7ce MD |
1023 | struct lttng_ust_abi_object_data *channel_data, |
1024 | struct lttng_ust_abi_object_data *stream_data) | |
74d81a6c MD |
1025 | { |
1026 | struct ustcomm_ust_msg lum; | |
1027 | struct ustcomm_ust_reply lur; | |
1028 | int ret; | |
1029 | ||
1030 | memset(&lum, 0, sizeof(lum)); | |
1031 | lum.handle = channel_data->handle; | |
fd17d7ce | 1032 | lum.cmd = LTTNG_UST_ABI_STREAM; |
74d81a6c MD |
1033 | lum.u.stream.len = stream_data->size; |
1034 | lum.u.stream.stream_nr = stream_data->u.stream.stream_nr; | |
1035 | ret = ustcomm_send_app_msg(sock, &lum); | |
1036 | if (ret) | |
1037 | return ret; | |
1038 | ||
1039 | assert(stream_data); | |
fd17d7ce | 1040 | assert(stream_data->type == LTTNG_UST_ABI_OBJECT_TYPE_STREAM); |
74d81a6c MD |
1041 | |
1042 | ret = ustctl_send_stream(sock, | |
1043 | stream_data->u.stream.stream_nr, | |
1044 | stream_data->size, | |
1045 | stream_data->u.stream.shm_fd, | |
1046 | stream_data->u.stream.wakeup_fd, 1); | |
1047 | if (ret) | |
1048 | return ret; | |
1049 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1050 | } | |
1051 | ||
fd17d7ce MD |
1052 | int ustctl_duplicate_ust_object_data(struct lttng_ust_abi_object_data **dest, |
1053 | struct lttng_ust_abi_object_data *src) | |
12f3dabc | 1054 | { |
fd17d7ce | 1055 | struct lttng_ust_abi_object_data *obj; |
12f3dabc MD |
1056 | int ret; |
1057 | ||
1058 | if (src->handle != -1) { | |
1059 | ret = -EINVAL; | |
1060 | goto error; | |
1061 | } | |
1062 | ||
1063 | obj = zmalloc(sizeof(*obj)); | |
1064 | if (!obj) { | |
1065 | ret = -ENOMEM; | |
1066 | goto error; | |
1067 | } | |
1068 | ||
1069 | obj->type = src->type; | |
1070 | obj->handle = src->handle; | |
1071 | obj->size = src->size; | |
1072 | ||
1073 | switch (obj->type) { | |
fd17d7ce | 1074 | case LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL: |
12f3dabc MD |
1075 | { |
1076 | obj->u.channel.type = src->u.channel.type; | |
1077 | if (src->u.channel.wakeup_fd >= 0) { | |
1078 | obj->u.channel.wakeup_fd = | |
1079 | dup(src->u.channel.wakeup_fd); | |
1080 | if (obj->u.channel.wakeup_fd < 0) { | |
1081 | ret = errno; | |
1082 | goto chan_error_wakeup_fd; | |
1083 | } | |
1084 | } else { | |
1085 | obj->u.channel.wakeup_fd = | |
1086 | src->u.channel.wakeup_fd; | |
1087 | } | |
1088 | obj->u.channel.data = zmalloc(obj->size); | |
1089 | if (!obj->u.channel.data) { | |
1090 | ret = -ENOMEM; | |
1091 | goto chan_error_alloc; | |
1092 | } | |
1093 | memcpy(obj->u.channel.data, src->u.channel.data, obj->size); | |
1094 | break; | |
1095 | ||
1096 | chan_error_alloc: | |
1097 | if (src->u.channel.wakeup_fd >= 0) { | |
1098 | int closeret; | |
1099 | ||
1100 | closeret = close(obj->u.channel.wakeup_fd); | |
1101 | if (closeret) { | |
1102 | PERROR("close"); | |
1103 | } | |
1104 | } | |
1105 | chan_error_wakeup_fd: | |
1106 | goto error_type; | |
1107 | ||
1108 | } | |
1109 | ||
fd17d7ce | 1110 | case LTTNG_UST_ABI_OBJECT_TYPE_STREAM: |
12f3dabc MD |
1111 | { |
1112 | obj->u.stream.stream_nr = src->u.stream.stream_nr; | |
1113 | if (src->u.stream.wakeup_fd >= 0) { | |
1114 | obj->u.stream.wakeup_fd = | |
1115 | dup(src->u.stream.wakeup_fd); | |
1116 | if (obj->u.stream.wakeup_fd < 0) { | |
1117 | ret = errno; | |
1118 | goto stream_error_wakeup_fd; | |
1119 | } | |
1120 | } else { | |
1121 | obj->u.stream.wakeup_fd = | |
1122 | src->u.stream.wakeup_fd; | |
1123 | } | |
1124 | ||
1125 | if (src->u.stream.shm_fd >= 0) { | |
1126 | obj->u.stream.shm_fd = | |
1127 | dup(src->u.stream.shm_fd); | |
1128 | if (obj->u.stream.shm_fd < 0) { | |
1129 | ret = errno; | |
1130 | goto stream_error_shm_fd; | |
1131 | } | |
1132 | } else { | |
1133 | obj->u.stream.shm_fd = | |
1134 | src->u.stream.shm_fd; | |
1135 | } | |
1136 | break; | |
1137 | ||
1138 | stream_error_shm_fd: | |
1139 | if (src->u.stream.wakeup_fd >= 0) { | |
1140 | int closeret; | |
1141 | ||
1142 | closeret = close(obj->u.stream.wakeup_fd); | |
1143 | if (closeret) { | |
1144 | PERROR("close"); | |
1145 | } | |
1146 | } | |
1147 | stream_error_wakeup_fd: | |
1148 | goto error_type; | |
1149 | } | |
1150 | ||
fd17d7ce | 1151 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER: |
ebabbf58 MD |
1152 | { |
1153 | obj->u.counter.data = zmalloc(obj->size); | |
1154 | if (!obj->u.counter.data) { | |
1155 | ret = -ENOMEM; | |
1156 | goto error_type; | |
1157 | } | |
1158 | memcpy(obj->u.counter.data, src->u.counter.data, obj->size); | |
1159 | break; | |
1160 | } | |
1161 | ||
fd17d7ce | 1162 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL: |
ebabbf58 MD |
1163 | { |
1164 | if (src->u.counter_global.shm_fd >= 0) { | |
1165 | obj->u.counter_global.shm_fd = | |
1166 | dup(src->u.counter_global.shm_fd); | |
1167 | if (obj->u.counter_global.shm_fd < 0) { | |
1168 | ret = errno; | |
1169 | goto error_type; | |
1170 | } | |
1171 | } | |
1172 | break; | |
1173 | } | |
1174 | ||
fd17d7ce | 1175 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU: |
ebabbf58 MD |
1176 | { |
1177 | obj->u.counter_cpu.cpu_nr = src->u.counter_cpu.cpu_nr; | |
1178 | if (src->u.counter_cpu.shm_fd >= 0) { | |
1179 | obj->u.counter_cpu.shm_fd = | |
1180 | dup(src->u.counter_cpu.shm_fd); | |
1181 | if (obj->u.counter_cpu.shm_fd < 0) { | |
1182 | ret = errno; | |
1183 | goto error_type; | |
1184 | } | |
1185 | } | |
1186 | break; | |
1187 | } | |
1188 | ||
12f3dabc MD |
1189 | default: |
1190 | ret = -EINVAL; | |
1191 | goto error_type; | |
1192 | } | |
1193 | ||
1194 | *dest = obj; | |
1195 | return 0; | |
1196 | ||
1197 | error_type: | |
1198 | free(obj); | |
1199 | error: | |
1200 | return ret; | |
1201 | } | |
1202 | ||
74d81a6c MD |
1203 | |
1204 | /* Buffer operations */ | |
1205 | ||
5ea386c3 MD |
1206 | int ustctl_get_nr_stream_per_channel(void) |
1207 | { | |
1208 | return num_possible_cpus(); | |
1209 | } | |
1210 | ||
74d81a6c | 1211 | struct ustctl_consumer_channel * |
5ea386c3 MD |
1212 | ustctl_create_channel(struct ustctl_consumer_channel_attr *attr, |
1213 | const int *stream_fds, int nr_stream_fds) | |
74d81a6c MD |
1214 | { |
1215 | struct ustctl_consumer_channel *chan; | |
1216 | const char *transport_name; | |
1217 | struct lttng_transport *transport; | |
1218 | ||
1219 | switch (attr->type) { | |
fd17d7ce MD |
1220 | case LTTNG_UST_ABI_CHAN_PER_CPU: |
1221 | if (attr->output == LTTNG_UST_ABI_MMAP) { | |
34a91bdb MD |
1222 | if (attr->overwrite) { |
1223 | if (attr->read_timer_interval == 0) { | |
1224 | transport_name = "relay-overwrite-mmap"; | |
1225 | } else { | |
1226 | transport_name = "relay-overwrite-rt-mmap"; | |
1227 | } | |
1228 | } else { | |
1229 | if (attr->read_timer_interval == 0) { | |
1230 | transport_name = "relay-discard-mmap"; | |
1231 | } else { | |
1232 | transport_name = "relay-discard-rt-mmap"; | |
1233 | } | |
1234 | } | |
74d81a6c MD |
1235 | } else { |
1236 | return NULL; | |
1237 | } | |
c1fca457 | 1238 | break; |
fd17d7ce MD |
1239 | case LTTNG_UST_ABI_CHAN_METADATA: |
1240 | if (attr->output == LTTNG_UST_ABI_MMAP) | |
74d81a6c MD |
1241 | transport_name = "relay-metadata-mmap"; |
1242 | else | |
1243 | return NULL; | |
c1fca457 MD |
1244 | break; |
1245 | default: | |
74d81a6c | 1246 | transport_name = "<unknown>"; |
c1fca457 MD |
1247 | return NULL; |
1248 | } | |
74d81a6c | 1249 | |
65c48d6a | 1250 | transport = lttng_ust_transport_find(transport_name); |
74d81a6c MD |
1251 | if (!transport) { |
1252 | DBG("LTTng transport %s not found\n", | |
32ce8569 | 1253 | transport_name); |
74d81a6c | 1254 | return NULL; |
7a784989 | 1255 | } |
74d81a6c MD |
1256 | |
1257 | chan = zmalloc(sizeof(*chan)); | |
1258 | if (!chan) | |
1259 | return NULL; | |
1260 | ||
a880bae5 | 1261 | chan->chan = transport->ops.priv->channel_create(transport_name, NULL, |
32ce8569 | 1262 | attr->subbuf_size, attr->num_subbuf, |
74d81a6c | 1263 | attr->switch_timer_interval, |
32ce8569 | 1264 | attr->read_timer_interval, |
a9ff648c | 1265 | attr->uuid, attr->chan_id, |
b2c5f61a MD |
1266 | stream_fds, nr_stream_fds, |
1267 | attr->blocking_timeout); | |
74d81a6c MD |
1268 | if (!chan->chan) { |
1269 | goto chan_error; | |
1270 | } | |
1271 | chan->chan->ops = &transport->ops; | |
1272 | memcpy(&chan->attr, attr, sizeof(chan->attr)); | |
cb7378b3 MD |
1273 | chan->wait_fd = ustctl_channel_get_wait_fd(chan); |
1274 | chan->wakeup_fd = ustctl_channel_get_wakeup_fd(chan); | |
74d81a6c MD |
1275 | return chan; |
1276 | ||
1277 | chan_error: | |
1278 | free(chan); | |
1279 | return NULL; | |
57773204 MD |
1280 | } |
1281 | ||
74d81a6c | 1282 | void ustctl_destroy_channel(struct ustctl_consumer_channel *chan) |
57773204 | 1283 | { |
b24e4e91 MD |
1284 | (void) ustctl_channel_close_wait_fd(chan); |
1285 | (void) ustctl_channel_close_wakeup_fd(chan); | |
a880bae5 | 1286 | chan->chan->ops->priv->channel_destroy(chan->chan); |
74d81a6c MD |
1287 | free(chan); |
1288 | } | |
1289 | ||
1290 | int ustctl_send_channel_to_sessiond(int sock, | |
1291 | struct ustctl_consumer_channel *channel) | |
1292 | { | |
1293 | struct shm_object_table *table; | |
57773204 | 1294 | |
07539b34 | 1295 | table = channel->chan->priv->rb_chan->handle->table; |
74d81a6c | 1296 | if (table->size <= 0) |
9bfc503d | 1297 | return -EINVAL; |
74d81a6c MD |
1298 | return ustctl_send_channel(sock, |
1299 | channel->attr.type, | |
1300 | table->objects[0].memory_map, | |
1301 | table->objects[0].memory_map_size, | |
ff0f5728 | 1302 | channel->wakeup_fd, |
74d81a6c MD |
1303 | 0); |
1304 | } | |
9bfc503d | 1305 | |
74d81a6c MD |
1306 | int ustctl_send_stream_to_sessiond(int sock, |
1307 | struct ustctl_consumer_stream *stream) | |
1308 | { | |
1309 | if (!stream) | |
1310 | return ustctl_send_stream(sock, -1U, -1U, -1, -1, 0); | |
1311 | ||
1312 | return ustctl_send_stream(sock, | |
1313 | stream->cpu, | |
1314 | stream->memory_map_size, | |
1315 | stream->shm_fd, stream->wakeup_fd, | |
1316 | 0); | |
57773204 MD |
1317 | } |
1318 | ||
c9023c93 MD |
1319 | int ustctl_write_metadata_to_channel( |
1320 | struct ustctl_consumer_channel *channel, | |
1321 | const char *metadata_str, /* NOT null-terminated */ | |
1322 | size_t len) /* metadata length */ | |
1323 | { | |
b5457df5 | 1324 | struct lttng_ust_ring_buffer_ctx ctx; |
e7bc0ef6 | 1325 | struct lttng_ust_channel_buffer *lttng_chan_buf = channel->chan; |
b5457df5 | 1326 | struct lttng_ust_ring_buffer_channel *rb_chan = lttng_chan_buf->priv->rb_chan; |
c9023c93 MD |
1327 | const char *str = metadata_str; |
1328 | int ret = 0, waitret; | |
1329 | size_t reserve_len, pos; | |
1330 | ||
1331 | for (pos = 0; pos < len; pos += reserve_len) { | |
1332 | reserve_len = min_t(size_t, | |
07539b34 | 1333 | lttng_chan_buf->ops->priv->packet_avail_size(lttng_chan_buf), |
c9023c93 | 1334 | len - pos); |
b5457df5 | 1335 | lttng_ust_ring_buffer_ctx_init(&ctx, rb_chan, reserve_len, sizeof(char), NULL); |
c9023c93 MD |
1336 | /* |
1337 | * We don't care about metadata buffer's records lost | |
1338 | * count, because we always retry here. Report error if | |
1339 | * we need to bail out after timeout or being | |
1340 | * interrupted. | |
1341 | */ | |
1342 | waitret = wait_cond_interruptible_timeout( | |
1343 | ({ | |
8936b6c0 | 1344 | ret = lttng_chan_buf->ops->event_reserve(&ctx); |
c9023c93 MD |
1345 | ret != -ENOBUFS || !ret; |
1346 | }), | |
1347 | LTTNG_METADATA_TIMEOUT_MSEC); | |
1348 | if (waitret == -ETIMEDOUT || waitret == -EINTR || ret) { | |
1349 | DBG("LTTng: Failure to write metadata to buffers (%s)\n", | |
1350 | waitret == -EINTR ? "interrupted" : | |
1351 | (ret == -ENOBUFS ? "timeout" : "I/O error")); | |
1352 | if (waitret == -EINTR) | |
1353 | ret = waitret; | |
1354 | goto end; | |
1355 | } | |
8936b6c0 | 1356 | lttng_chan_buf->ops->event_write(&ctx, &str[pos], reserve_len, 1); |
e7bc0ef6 | 1357 | lttng_chan_buf->ops->event_commit(&ctx); |
c9023c93 MD |
1358 | } |
1359 | end: | |
1360 | return ret; | |
1361 | } | |
1362 | ||
3ef94b0e JD |
1363 | /* |
1364 | * Write at most one packet in the channel. | |
1365 | * Returns the number of bytes written on success, < 0 on error. | |
1366 | */ | |
1367 | ssize_t ustctl_write_one_packet_to_channel( | |
1368 | struct ustctl_consumer_channel *channel, | |
1369 | const char *metadata_str, /* NOT null-terminated */ | |
1370 | size_t len) /* metadata length */ | |
1371 | { | |
b5457df5 | 1372 | struct lttng_ust_ring_buffer_ctx ctx; |
e7bc0ef6 | 1373 | struct lttng_ust_channel_buffer *lttng_chan_buf = channel->chan; |
b5457df5 | 1374 | struct lttng_ust_ring_buffer_channel *rb_chan = lttng_chan_buf->priv->rb_chan; |
3ef94b0e JD |
1375 | const char *str = metadata_str; |
1376 | ssize_t reserve_len; | |
1377 | int ret; | |
1378 | ||
1379 | reserve_len = min_t(ssize_t, | |
07539b34 | 1380 | lttng_chan_buf->ops->priv->packet_avail_size(lttng_chan_buf), |
3ef94b0e | 1381 | len); |
b5457df5 | 1382 | lttng_ust_ring_buffer_ctx_init(&ctx, rb_chan, reserve_len, sizeof(char), NULL); |
8936b6c0 | 1383 | ret = lttng_chan_buf->ops->event_reserve(&ctx); |
3ef94b0e JD |
1384 | if (ret != 0) { |
1385 | DBG("LTTng: event reservation failed"); | |
1386 | assert(ret < 0); | |
1387 | reserve_len = ret; | |
1388 | goto end; | |
1389 | } | |
8936b6c0 | 1390 | lttng_chan_buf->ops->event_write(&ctx, str, reserve_len, 1); |
e7bc0ef6 | 1391 | lttng_chan_buf->ops->event_commit(&ctx); |
3ef94b0e JD |
1392 | |
1393 | end: | |
1394 | return reserve_len; | |
1395 | } | |
1396 | ||
ff0f5728 MD |
1397 | int ustctl_channel_close_wait_fd(struct ustctl_consumer_channel *consumer_chan) |
1398 | { | |
b5457df5 | 1399 | struct lttng_ust_ring_buffer_channel *chan; |
cb7378b3 | 1400 | int ret; |
ff0f5728 | 1401 | |
07539b34 | 1402 | chan = consumer_chan->chan->priv->rb_chan; |
cb7378b3 | 1403 | ret = ring_buffer_channel_close_wait_fd(&chan->backend.config, |
ff0f5728 | 1404 | chan, chan->handle); |
cb7378b3 MD |
1405 | if (!ret) |
1406 | consumer_chan->wait_fd = -1; | |
1407 | return ret; | |
ff0f5728 MD |
1408 | } |
1409 | ||
1410 | int ustctl_channel_close_wakeup_fd(struct ustctl_consumer_channel *consumer_chan) | |
1411 | { | |
b5457df5 | 1412 | struct lttng_ust_ring_buffer_channel *chan; |
cb7378b3 | 1413 | int ret; |
ff0f5728 | 1414 | |
07539b34 | 1415 | chan = consumer_chan->chan->priv->rb_chan; |
cb7378b3 | 1416 | ret = ring_buffer_channel_close_wakeup_fd(&chan->backend.config, |
ff0f5728 | 1417 | chan, chan->handle); |
cb7378b3 MD |
1418 | if (!ret) |
1419 | consumer_chan->wakeup_fd = -1; | |
1420 | return ret; | |
ff0f5728 MD |
1421 | } |
1422 | ||
74d81a6c | 1423 | int ustctl_stream_close_wait_fd(struct ustctl_consumer_stream *stream) |
5224b5c8 | 1424 | { |
b5457df5 | 1425 | struct lttng_ust_ring_buffer_channel *chan; |
5224b5c8 | 1426 | |
07539b34 | 1427 | chan = stream->chan->chan->priv->rb_chan; |
ff0f5728 | 1428 | return ring_buffer_stream_close_wait_fd(&chan->backend.config, |
07539b34 | 1429 | chan, chan->handle, stream->cpu); |
5224b5c8 MD |
1430 | } |
1431 | ||
74d81a6c | 1432 | int ustctl_stream_close_wakeup_fd(struct ustctl_consumer_stream *stream) |
6e922b24 | 1433 | { |
b5457df5 | 1434 | struct lttng_ust_ring_buffer_channel *chan; |
74d81a6c | 1435 | |
07539b34 | 1436 | chan = stream->chan->chan->priv->rb_chan; |
ff0f5728 | 1437 | return ring_buffer_stream_close_wakeup_fd(&chan->backend.config, |
07539b34 | 1438 | chan, chan->handle, stream->cpu); |
74d81a6c MD |
1439 | } |
1440 | ||
1441 | struct ustctl_consumer_stream * | |
1442 | ustctl_create_stream(struct ustctl_consumer_channel *channel, | |
1443 | int cpu) | |
1444 | { | |
1445 | struct ustctl_consumer_stream *stream; | |
1446 | struct lttng_ust_shm_handle *handle; | |
b5457df5 | 1447 | struct lttng_ust_ring_buffer_channel *rb_chan; |
74d81a6c MD |
1448 | int shm_fd, wait_fd, wakeup_fd; |
1449 | uint64_t memory_map_size; | |
b5457df5 | 1450 | struct lttng_ust_ring_buffer *buf; |
6e922b24 MD |
1451 | int ret; |
1452 | ||
74d81a6c MD |
1453 | if (!channel) |
1454 | return NULL; | |
07539b34 MD |
1455 | rb_chan = channel->chan->priv->rb_chan; |
1456 | handle = rb_chan->handle; | |
9bfc503d MD |
1457 | if (!handle) |
1458 | return NULL; | |
1459 | ||
07539b34 MD |
1460 | buf = channel_get_ring_buffer(&rb_chan->backend.config, |
1461 | rb_chan, cpu, handle, &shm_fd, &wait_fd, | |
74d81a6c | 1462 | &wakeup_fd, &memory_map_size); |
6e922b24 MD |
1463 | if (!buf) |
1464 | return NULL; | |
74d81a6c | 1465 | ret = lib_ring_buffer_open_read(buf, handle); |
6e922b24 MD |
1466 | if (ret) |
1467 | return NULL; | |
74d81a6c MD |
1468 | |
1469 | stream = zmalloc(sizeof(*stream)); | |
1470 | if (!stream) | |
1471 | goto alloc_error; | |
74d81a6c MD |
1472 | stream->buf = buf; |
1473 | stream->chan = channel; | |
1474 | stream->shm_fd = shm_fd; | |
1475 | stream->wait_fd = wait_fd; | |
1476 | stream->wakeup_fd = wakeup_fd; | |
1477 | stream->memory_map_size = memory_map_size; | |
1478 | stream->cpu = cpu; | |
1479 | return stream; | |
1480 | ||
1481 | alloc_error: | |
1482 | return NULL; | |
1483 | } | |
1484 | ||
1485 | void ustctl_destroy_stream(struct ustctl_consumer_stream *stream) | |
1486 | { | |
b5457df5 | 1487 | struct lttng_ust_ring_buffer *buf; |
74d81a6c MD |
1488 | struct ustctl_consumer_channel *consumer_chan; |
1489 | ||
1490 | assert(stream); | |
1491 | buf = stream->buf; | |
1492 | consumer_chan = stream->chan; | |
b24e4e91 MD |
1493 | (void) ustctl_stream_close_wait_fd(stream); |
1494 | (void) ustctl_stream_close_wakeup_fd(stream); | |
07539b34 | 1495 | lib_ring_buffer_release_read(buf, consumer_chan->chan->priv->rb_chan->handle); |
74d81a6c | 1496 | free(stream); |
6e922b24 MD |
1497 | } |
1498 | ||
ff0f5728 MD |
1499 | int ustctl_channel_get_wait_fd(struct ustctl_consumer_channel *chan) |
1500 | { | |
1501 | if (!chan) | |
1502 | return -EINVAL; | |
07539b34 MD |
1503 | return shm_get_wait_fd(chan->chan->priv->rb_chan->handle, |
1504 | &chan->chan->priv->rb_chan->handle->chan._ref); | |
ff0f5728 MD |
1505 | } |
1506 | ||
1507 | int ustctl_channel_get_wakeup_fd(struct ustctl_consumer_channel *chan) | |
1508 | { | |
1509 | if (!chan) | |
1510 | return -EINVAL; | |
07539b34 MD |
1511 | return shm_get_wakeup_fd(chan->chan->priv->rb_chan->handle, |
1512 | &chan->chan->priv->rb_chan->handle->chan._ref); | |
ff0f5728 MD |
1513 | } |
1514 | ||
1515 | int ustctl_stream_get_wait_fd(struct ustctl_consumer_stream *stream) | |
6e922b24 | 1516 | { |
b5457df5 | 1517 | struct lttng_ust_ring_buffer *buf; |
74d81a6c MD |
1518 | struct ustctl_consumer_channel *consumer_chan; |
1519 | ||
1520 | if (!stream) | |
1521 | return -EINVAL; | |
1522 | buf = stream->buf; | |
1523 | consumer_chan = stream->chan; | |
07539b34 | 1524 | return shm_get_wait_fd(consumer_chan->chan->priv->rb_chan->handle, &buf->self._ref); |
74d81a6c MD |
1525 | } |
1526 | ||
ff0f5728 | 1527 | int ustctl_stream_get_wakeup_fd(struct ustctl_consumer_stream *stream) |
74d81a6c | 1528 | { |
b5457df5 | 1529 | struct lttng_ust_ring_buffer *buf; |
74d81a6c MD |
1530 | struct ustctl_consumer_channel *consumer_chan; |
1531 | ||
1532 | if (!stream) | |
1533 | return -EINVAL; | |
1534 | buf = stream->buf; | |
1535 | consumer_chan = stream->chan; | |
07539b34 | 1536 | return shm_get_wakeup_fd(consumer_chan->chan->priv->rb_chan->handle, &buf->self._ref); |
6e922b24 MD |
1537 | } |
1538 | ||
57773204 MD |
1539 | /* For mmap mode, readable without "get" operation */ |
1540 | ||
74d81a6c | 1541 | void *ustctl_get_mmap_base(struct ustctl_consumer_stream *stream) |
9095efe9 | 1542 | { |
b5457df5 | 1543 | struct lttng_ust_ring_buffer *buf; |
74d81a6c MD |
1544 | struct ustctl_consumer_channel *consumer_chan; |
1545 | ||
1546 | if (!stream) | |
9bfc503d | 1547 | return NULL; |
74d81a6c MD |
1548 | buf = stream->buf; |
1549 | consumer_chan = stream->chan; | |
07539b34 | 1550 | return shmp(consumer_chan->chan->priv->rb_chan->handle, buf->backend.memory_map); |
9095efe9 MD |
1551 | } |
1552 | ||
57773204 | 1553 | /* returns the length to mmap. */ |
74d81a6c | 1554 | int ustctl_get_mmap_len(struct ustctl_consumer_stream *stream, |
57773204 MD |
1555 | unsigned long *len) |
1556 | { | |
74d81a6c | 1557 | struct ustctl_consumer_channel *consumer_chan; |
57773204 | 1558 | unsigned long mmap_buf_len; |
b5457df5 | 1559 | struct lttng_ust_ring_buffer_channel *rb_chan; |
57773204 | 1560 | |
74d81a6c | 1561 | if (!stream) |
9bfc503d | 1562 | return -EINVAL; |
74d81a6c | 1563 | consumer_chan = stream->chan; |
07539b34 MD |
1564 | rb_chan = consumer_chan->chan->priv->rb_chan; |
1565 | if (rb_chan->backend.config.output != RING_BUFFER_MMAP) | |
57773204 | 1566 | return -EINVAL; |
07539b34 MD |
1567 | mmap_buf_len = rb_chan->backend.buf_size; |
1568 | if (rb_chan->backend.extra_reader_sb) | |
1569 | mmap_buf_len += rb_chan->backend.subbuf_size; | |
57773204 MD |
1570 | if (mmap_buf_len > INT_MAX) |
1571 | return -EFBIG; | |
1572 | *len = mmap_buf_len; | |
1573 | return 0; | |
1574 | } | |
1575 | ||
1576 | /* returns the maximum size for sub-buffers. */ | |
74d81a6c | 1577 | int ustctl_get_max_subbuf_size(struct ustctl_consumer_stream *stream, |
57773204 MD |
1578 | unsigned long *len) |
1579 | { | |
74d81a6c | 1580 | struct ustctl_consumer_channel *consumer_chan; |
b5457df5 | 1581 | struct lttng_ust_ring_buffer_channel *rb_chan; |
57773204 | 1582 | |
74d81a6c | 1583 | if (!stream) |
9bfc503d | 1584 | return -EINVAL; |
74d81a6c | 1585 | consumer_chan = stream->chan; |
07539b34 MD |
1586 | rb_chan = consumer_chan->chan->priv->rb_chan; |
1587 | *len = rb_chan->backend.subbuf_size; | |
57773204 MD |
1588 | return 0; |
1589 | } | |
1590 | ||
1591 | /* | |
1592 | * For mmap mode, operate on the current packet (between get/put or | |
1593 | * get_next/put_next). | |
1594 | */ | |
1595 | ||
1596 | /* returns the offset of the subbuffer belonging to the mmap reader. */ | |
74d81a6c MD |
1597 | int ustctl_get_mmap_read_offset(struct ustctl_consumer_stream *stream, |
1598 | unsigned long *off) | |
57773204 | 1599 | { |
b5457df5 | 1600 | struct lttng_ust_ring_buffer_channel *rb_chan; |
57773204 | 1601 | unsigned long sb_bindex; |
b5457df5 | 1602 | struct lttng_ust_ring_buffer *buf; |
74d81a6c | 1603 | struct ustctl_consumer_channel *consumer_chan; |
b5457df5 MD |
1604 | struct lttng_ust_ring_buffer_backend_pages_shmp *barray_idx; |
1605 | struct lttng_ust_ring_buffer_backend_pages *pages; | |
57773204 | 1606 | |
74d81a6c | 1607 | if (!stream) |
9bfc503d | 1608 | return -EINVAL; |
74d81a6c MD |
1609 | buf = stream->buf; |
1610 | consumer_chan = stream->chan; | |
07539b34 MD |
1611 | rb_chan = consumer_chan->chan->priv->rb_chan; |
1612 | if (rb_chan->backend.config.output != RING_BUFFER_MMAP) | |
57773204 | 1613 | return -EINVAL; |
07539b34 | 1614 | sb_bindex = subbuffer_id_get_index(&rb_chan->backend.config, |
32ce8569 | 1615 | buf->backend.buf_rsb.id); |
07539b34 | 1616 | barray_idx = shmp_index(rb_chan->handle, buf->backend.array, |
34daae3e MD |
1617 | sb_bindex); |
1618 | if (!barray_idx) | |
1619 | return -EINVAL; | |
07539b34 | 1620 | pages = shmp(rb_chan->handle, barray_idx->shmp); |
34daae3e MD |
1621 | if (!pages) |
1622 | return -EINVAL; | |
1623 | *off = pages->mmap_offset; | |
57773204 MD |
1624 | return 0; |
1625 | } | |
1626 | ||
1627 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
74d81a6c MD |
1628 | int ustctl_get_subbuf_size(struct ustctl_consumer_stream *stream, |
1629 | unsigned long *len) | |
57773204 | 1630 | { |
74d81a6c | 1631 | struct ustctl_consumer_channel *consumer_chan; |
b5457df5 MD |
1632 | struct lttng_ust_ring_buffer_channel *rb_chan; |
1633 | struct lttng_ust_ring_buffer *buf; | |
57773204 | 1634 | |
74d81a6c | 1635 | if (!stream) |
9bfc503d MD |
1636 | return -EINVAL; |
1637 | ||
74d81a6c MD |
1638 | buf = stream->buf; |
1639 | consumer_chan = stream->chan; | |
07539b34 MD |
1640 | rb_chan = consumer_chan->chan->priv->rb_chan; |
1641 | *len = lib_ring_buffer_get_read_data_size(&rb_chan->backend.config, buf, | |
1642 | rb_chan->handle); | |
57773204 MD |
1643 | return 0; |
1644 | } | |
1645 | ||
1646 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
74d81a6c MD |
1647 | int ustctl_get_padded_subbuf_size(struct ustctl_consumer_stream *stream, |
1648 | unsigned long *len) | |
57773204 | 1649 | { |
74d81a6c | 1650 | struct ustctl_consumer_channel *consumer_chan; |
b5457df5 MD |
1651 | struct lttng_ust_ring_buffer_channel *rb_chan; |
1652 | struct lttng_ust_ring_buffer *buf; | |
57773204 | 1653 | |
74d81a6c | 1654 | if (!stream) |
9bfc503d | 1655 | return -EINVAL; |
74d81a6c MD |
1656 | buf = stream->buf; |
1657 | consumer_chan = stream->chan; | |
07539b34 MD |
1658 | rb_chan = consumer_chan->chan->priv->rb_chan; |
1659 | *len = lib_ring_buffer_get_read_data_size(&rb_chan->backend.config, buf, | |
1660 | rb_chan->handle); | |
b72687b8 | 1661 | *len = LTTNG_UST_PAGE_ALIGN(*len); |
57773204 MD |
1662 | return 0; |
1663 | } | |
1664 | ||
1665 | /* Get exclusive read access to the next sub-buffer that can be read. */ | |
74d81a6c | 1666 | int ustctl_get_next_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1667 | { |
b5457df5 | 1668 | struct lttng_ust_ring_buffer *buf; |
74d81a6c | 1669 | struct ustctl_consumer_channel *consumer_chan; |
9bfc503d | 1670 | |
74d81a6c MD |
1671 | if (!stream) |
1672 | return -EINVAL; | |
1673 | buf = stream->buf; | |
1674 | consumer_chan = stream->chan; | |
1675 | return lib_ring_buffer_get_next_subbuf(buf, | |
07539b34 | 1676 | consumer_chan->chan->priv->rb_chan->handle); |
57773204 MD |
1677 | } |
1678 | ||
1679 | ||
1680 | /* Release exclusive sub-buffer access, move consumer forward. */ | |
74d81a6c | 1681 | int ustctl_put_next_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1682 | { |
b5457df5 | 1683 | struct lttng_ust_ring_buffer *buf; |
74d81a6c | 1684 | struct ustctl_consumer_channel *consumer_chan; |
9bfc503d | 1685 | |
74d81a6c MD |
1686 | if (!stream) |
1687 | return -EINVAL; | |
1688 | buf = stream->buf; | |
1689 | consumer_chan = stream->chan; | |
07539b34 | 1690 | lib_ring_buffer_put_next_subbuf(buf, consumer_chan->chan->priv->rb_chan->handle); |
57773204 MD |
1691 | return 0; |
1692 | } | |
1693 | ||
1694 | /* snapshot */ | |
1695 | ||
1696 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
74d81a6c | 1697 | int ustctl_snapshot(struct ustctl_consumer_stream *stream) |
57773204 | 1698 | { |
b5457df5 | 1699 | struct lttng_ust_ring_buffer *buf; |
74d81a6c | 1700 | struct ustctl_consumer_channel *consumer_chan; |
9bfc503d | 1701 | |
74d81a6c MD |
1702 | if (!stream) |
1703 | return -EINVAL; | |
1704 | buf = stream->buf; | |
1705 | consumer_chan = stream->chan; | |
57773204 | 1706 | return lib_ring_buffer_snapshot(buf, &buf->cons_snapshot, |
07539b34 | 1707 | &buf->prod_snapshot, consumer_chan->chan->priv->rb_chan->handle); |
57773204 MD |
1708 | } |
1709 | ||
f45930b7 JG |
1710 | /* |
1711 | * Get a snapshot of the current ring buffer producer and consumer positions | |
1712 | * even if the consumed and produced positions are contained within the same | |
1713 | * subbuffer. | |
1714 | */ | |
1715 | int ustctl_snapshot_sample_positions(struct ustctl_consumer_stream *stream) | |
1716 | { | |
b5457df5 | 1717 | struct lttng_ust_ring_buffer *buf; |
f45930b7 JG |
1718 | struct ustctl_consumer_channel *consumer_chan; |
1719 | ||
1720 | if (!stream) | |
1721 | return -EINVAL; | |
1722 | buf = stream->buf; | |
1723 | consumer_chan = stream->chan; | |
1724 | return lib_ring_buffer_snapshot_sample_positions(buf, | |
1725 | &buf->cons_snapshot, &buf->prod_snapshot, | |
07539b34 | 1726 | consumer_chan->chan->priv->rb_chan->handle); |
f45930b7 JG |
1727 | } |
1728 | ||
57773204 | 1729 | /* Get the consumer position (iteration start) */ |
74d81a6c MD |
1730 | int ustctl_snapshot_get_consumed(struct ustctl_consumer_stream *stream, |
1731 | unsigned long *pos) | |
57773204 | 1732 | { |
b5457df5 | 1733 | struct lttng_ust_ring_buffer *buf; |
9bfc503d | 1734 | |
74d81a6c MD |
1735 | if (!stream) |
1736 | return -EINVAL; | |
1737 | buf = stream->buf; | |
57773204 MD |
1738 | *pos = buf->cons_snapshot; |
1739 | return 0; | |
1740 | } | |
1741 | ||
1742 | /* Get the producer position (iteration end) */ | |
74d81a6c MD |
1743 | int ustctl_snapshot_get_produced(struct ustctl_consumer_stream *stream, |
1744 | unsigned long *pos) | |
57773204 | 1745 | { |
b5457df5 | 1746 | struct lttng_ust_ring_buffer *buf; |
9bfc503d | 1747 | |
74d81a6c MD |
1748 | if (!stream) |
1749 | return -EINVAL; | |
1750 | buf = stream->buf; | |
57773204 MD |
1751 | *pos = buf->prod_snapshot; |
1752 | return 0; | |
1753 | } | |
1754 | ||
1755 | /* Get exclusive read access to the specified sub-buffer position */ | |
74d81a6c MD |
1756 | int ustctl_get_subbuf(struct ustctl_consumer_stream *stream, |
1757 | unsigned long *pos) | |
57773204 | 1758 | { |
b5457df5 | 1759 | struct lttng_ust_ring_buffer *buf; |
74d81a6c | 1760 | struct ustctl_consumer_channel *consumer_chan; |
9bfc503d | 1761 | |
74d81a6c MD |
1762 | if (!stream) |
1763 | return -EINVAL; | |
1764 | buf = stream->buf; | |
1765 | consumer_chan = stream->chan; | |
1766 | return lib_ring_buffer_get_subbuf(buf, *pos, | |
07539b34 | 1767 | consumer_chan->chan->priv->rb_chan->handle); |
57773204 MD |
1768 | } |
1769 | ||
1770 | /* Release exclusive sub-buffer access */ | |
74d81a6c | 1771 | int ustctl_put_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1772 | { |
b5457df5 | 1773 | struct lttng_ust_ring_buffer *buf; |
74d81a6c | 1774 | struct ustctl_consumer_channel *consumer_chan; |
9bfc503d | 1775 | |
74d81a6c MD |
1776 | if (!stream) |
1777 | return -EINVAL; | |
1778 | buf = stream->buf; | |
1779 | consumer_chan = stream->chan; | |
07539b34 | 1780 | lib_ring_buffer_put_subbuf(buf, consumer_chan->chan->priv->rb_chan->handle); |
57773204 MD |
1781 | return 0; |
1782 | } | |
1783 | ||
74d81a6c | 1784 | void ustctl_flush_buffer(struct ustctl_consumer_stream *stream, |
b52190f2 | 1785 | int producer_active) |
57773204 | 1786 | { |
b5457df5 | 1787 | struct lttng_ust_ring_buffer *buf; |
74d81a6c MD |
1788 | struct ustctl_consumer_channel *consumer_chan; |
1789 | ||
1790 | assert(stream); | |
1791 | buf = stream->buf; | |
1792 | consumer_chan = stream->chan; | |
b52190f2 MD |
1793 | lib_ring_buffer_switch_slow(buf, |
1794 | producer_active ? SWITCH_ACTIVE : SWITCH_FLUSH, | |
07539b34 | 1795 | consumer_chan->chan->priv->rb_chan->handle); |
74d81a6c MD |
1796 | } |
1797 | ||
beca55a1 MD |
1798 | void ustctl_clear_buffer(struct ustctl_consumer_stream *stream) |
1799 | { | |
b5457df5 | 1800 | struct lttng_ust_ring_buffer *buf; |
beca55a1 MD |
1801 | struct ustctl_consumer_channel *consumer_chan; |
1802 | ||
1803 | assert(stream); | |
1804 | buf = stream->buf; | |
1805 | consumer_chan = stream->chan; | |
1806 | lib_ring_buffer_switch_slow(buf, SWITCH_ACTIVE, | |
07539b34 MD |
1807 | consumer_chan->chan->priv->rb_chan->handle); |
1808 | lib_ring_buffer_clear_reader(buf, consumer_chan->chan->priv->rb_chan->handle); | |
beca55a1 MD |
1809 | } |
1810 | ||
b2f3252a JD |
1811 | static |
1812 | struct lttng_ust_client_lib_ring_buffer_client_cb *get_client_cb( | |
b5457df5 MD |
1813 | struct lttng_ust_ring_buffer *buf __attribute__((unused)), |
1814 | struct lttng_ust_ring_buffer_channel *chan) | |
b2f3252a | 1815 | { |
b5457df5 | 1816 | const struct lttng_ust_ring_buffer_config *config; |
b2f3252a JD |
1817 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; |
1818 | ||
b2f3252a JD |
1819 | config = &chan->backend.config; |
1820 | if (!config->cb_ptr) | |
1821 | return NULL; | |
1822 | client_cb = caa_container_of(config->cb_ptr, | |
1823 | struct lttng_ust_client_lib_ring_buffer_client_cb, | |
1824 | parent); | |
1825 | return client_cb; | |
1826 | } | |
1827 | ||
1828 | int ustctl_get_timestamp_begin(struct ustctl_consumer_stream *stream, | |
1829 | uint64_t *timestamp_begin) | |
1830 | { | |
1831 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1832 | struct lttng_ust_ring_buffer_channel *chan; |
1833 | struct lttng_ust_ring_buffer *buf; | |
b2f3252a JD |
1834 | |
1835 | if (!stream || !timestamp_begin) | |
1836 | return -EINVAL; | |
e1919a41 | 1837 | buf = stream->buf; |
07539b34 MD |
1838 | chan = stream->chan->chan->priv->rb_chan; |
1839 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
1840 | if (!client_cb) |
1841 | return -ENOSYS; | |
07539b34 | 1842 | return client_cb->timestamp_begin(buf, chan, timestamp_begin); |
b2f3252a JD |
1843 | } |
1844 | ||
1845 | int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream, | |
1846 | uint64_t *timestamp_end) | |
1847 | { | |
1848 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1849 | struct lttng_ust_ring_buffer_channel *chan; |
1850 | struct lttng_ust_ring_buffer *buf; | |
b2f3252a JD |
1851 | |
1852 | if (!stream || !timestamp_end) | |
1853 | return -EINVAL; | |
e1919a41 | 1854 | buf = stream->buf; |
07539b34 MD |
1855 | chan = stream->chan->chan->priv->rb_chan; |
1856 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
1857 | if (!client_cb) |
1858 | return -ENOSYS; | |
07539b34 | 1859 | return client_cb->timestamp_end(buf, chan, timestamp_end); |
b2f3252a JD |
1860 | } |
1861 | ||
1862 | int ustctl_get_events_discarded(struct ustctl_consumer_stream *stream, | |
1863 | uint64_t *events_discarded) | |
1864 | { | |
1865 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1866 | struct lttng_ust_ring_buffer_channel *chan; |
1867 | struct lttng_ust_ring_buffer *buf; | |
b2f3252a JD |
1868 | |
1869 | if (!stream || !events_discarded) | |
1870 | return -EINVAL; | |
e1919a41 | 1871 | buf = stream->buf; |
07539b34 MD |
1872 | chan = stream->chan->chan->priv->rb_chan; |
1873 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
1874 | if (!client_cb) |
1875 | return -ENOSYS; | |
07539b34 | 1876 | return client_cb->events_discarded(buf, chan, events_discarded); |
b2f3252a JD |
1877 | } |
1878 | ||
1879 | int ustctl_get_content_size(struct ustctl_consumer_stream *stream, | |
1880 | uint64_t *content_size) | |
1881 | { | |
1882 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1883 | struct lttng_ust_ring_buffer_channel *chan; |
1884 | struct lttng_ust_ring_buffer *buf; | |
b2f3252a JD |
1885 | |
1886 | if (!stream || !content_size) | |
1887 | return -EINVAL; | |
e1919a41 | 1888 | buf = stream->buf; |
07539b34 MD |
1889 | chan = stream->chan->chan->priv->rb_chan; |
1890 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
1891 | if (!client_cb) |
1892 | return -ENOSYS; | |
07539b34 | 1893 | return client_cb->content_size(buf, chan, content_size); |
b2f3252a JD |
1894 | } |
1895 | ||
1896 | int ustctl_get_packet_size(struct ustctl_consumer_stream *stream, | |
1897 | uint64_t *packet_size) | |
1898 | { | |
1899 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1900 | struct lttng_ust_ring_buffer_channel *chan; |
1901 | struct lttng_ust_ring_buffer *buf; | |
b2f3252a JD |
1902 | |
1903 | if (!stream || !packet_size) | |
1904 | return -EINVAL; | |
e1919a41 | 1905 | buf = stream->buf; |
07539b34 MD |
1906 | chan = stream->chan->chan->priv->rb_chan; |
1907 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
1908 | if (!client_cb) |
1909 | return -ENOSYS; | |
07539b34 | 1910 | return client_cb->packet_size(buf, chan, packet_size); |
b2f3252a JD |
1911 | } |
1912 | ||
1913 | int ustctl_get_stream_id(struct ustctl_consumer_stream *stream, | |
1914 | uint64_t *stream_id) | |
1915 | { | |
1916 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1917 | struct lttng_ust_ring_buffer_channel *chan; |
1918 | struct lttng_ust_ring_buffer *buf; | |
b2f3252a JD |
1919 | |
1920 | if (!stream || !stream_id) | |
1921 | return -EINVAL; | |
e1919a41 | 1922 | buf = stream->buf; |
07539b34 MD |
1923 | chan = stream->chan->chan->priv->rb_chan; |
1924 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
1925 | if (!client_cb) |
1926 | return -ENOSYS; | |
07539b34 | 1927 | return client_cb->stream_id(buf, chan, stream_id); |
b2f3252a JD |
1928 | } |
1929 | ||
fca361e8 JD |
1930 | int ustctl_get_current_timestamp(struct ustctl_consumer_stream *stream, |
1931 | uint64_t *ts) | |
1932 | { | |
1933 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1934 | struct lttng_ust_ring_buffer_channel *chan; |
1935 | struct lttng_ust_ring_buffer *buf; | |
fca361e8 JD |
1936 | |
1937 | if (!stream || !ts) | |
1938 | return -EINVAL; | |
e1919a41 | 1939 | buf = stream->buf; |
07539b34 MD |
1940 | chan = stream->chan->chan->priv->rb_chan; |
1941 | client_cb = get_client_cb(buf, chan); | |
fca361e8 JD |
1942 | if (!client_cb || !client_cb->current_timestamp) |
1943 | return -ENOSYS; | |
07539b34 | 1944 | return client_cb->current_timestamp(buf, chan, ts); |
fca361e8 JD |
1945 | } |
1946 | ||
1ff31389 JD |
1947 | int ustctl_get_sequence_number(struct ustctl_consumer_stream *stream, |
1948 | uint64_t *seq) | |
1949 | { | |
1950 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1951 | struct lttng_ust_ring_buffer_channel *chan; |
1952 | struct lttng_ust_ring_buffer *buf; | |
1ff31389 JD |
1953 | |
1954 | if (!stream || !seq) | |
1955 | return -EINVAL; | |
1956 | buf = stream->buf; | |
07539b34 MD |
1957 | chan = stream->chan->chan->priv->rb_chan; |
1958 | client_cb = get_client_cb(buf, chan); | |
1ff31389 JD |
1959 | if (!client_cb || !client_cb->sequence_number) |
1960 | return -ENOSYS; | |
07539b34 | 1961 | return client_cb->sequence_number(buf, chan, seq); |
1ff31389 JD |
1962 | } |
1963 | ||
45a00b05 JD |
1964 | int ustctl_get_instance_id(struct ustctl_consumer_stream *stream, |
1965 | uint64_t *id) | |
1966 | { | |
1967 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
1968 | struct lttng_ust_ring_buffer_channel *chan; |
1969 | struct lttng_ust_ring_buffer *buf; | |
45a00b05 JD |
1970 | |
1971 | if (!stream || !id) | |
1972 | return -EINVAL; | |
1973 | buf = stream->buf; | |
07539b34 MD |
1974 | chan = stream->chan->chan->priv->rb_chan; |
1975 | client_cb = get_client_cb(buf, chan); | |
45a00b05 JD |
1976 | if (!client_cb) |
1977 | return -ENOSYS; | |
07539b34 | 1978 | return client_cb->instance_id(buf, chan, id); |
45a00b05 JD |
1979 | } |
1980 | ||
eeef0055 | 1981 | #ifdef HAVE_LINUX_PERF_EVENT_H |
57201bb3 MD |
1982 | |
1983 | int ustctl_has_perf_counters(void) | |
1984 | { | |
1985 | return 1; | |
1986 | } | |
1987 | ||
1988 | #else | |
1989 | ||
1990 | int ustctl_has_perf_counters(void) | |
1991 | { | |
1992 | return 0; | |
1993 | } | |
1994 | ||
1995 | #endif | |
1996 | ||
a834901f MD |
1997 | #ifdef __linux__ |
1998 | /* | |
1999 | * Override application pid/uid/gid with unix socket credentials. If | |
2000 | * the application announced a pid matching our view, it means it is | |
2001 | * within the same pid namespace, so expose the ppid provided by the | |
2002 | * application. | |
2003 | */ | |
2004 | static | |
2005 | int get_cred(int sock, | |
2006 | const struct ustctl_reg_msg *reg_msg, | |
2007 | uint32_t *pid, | |
2008 | uint32_t *ppid, | |
2009 | uint32_t *uid, | |
2010 | uint32_t *gid) | |
2011 | { | |
2012 | struct ucred ucred; | |
2013 | socklen_t ucred_len = sizeof(struct ucred); | |
2014 | int ret; | |
2015 | ||
2016 | ret = getsockopt(sock, SOL_SOCKET, SO_PEERCRED, &ucred, &ucred_len); | |
2017 | if (ret) { | |
2018 | return -LTTNG_UST_ERR_PEERCRED; | |
2019 | } | |
2020 | DBG("Unix socket peercred [ pid: %u, uid: %u, gid: %u ], " | |
2021 | "application registered claiming [ pid: %u, ppid: %u, uid: %u, gid: %u ]", | |
2022 | ucred.pid, ucred.uid, ucred.gid, | |
2023 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); | |
2024 | if (!ucred.pid) { | |
2025 | ERR("Unix socket credential pid=0. Refusing application in distinct, non-nested pid namespace."); | |
2026 | return -LTTNG_UST_ERR_PEERCRED_PID; | |
2027 | } | |
2028 | *pid = ucred.pid; | |
2029 | *uid = ucred.uid; | |
2030 | *gid = ucred.gid; | |
2031 | if (ucred.pid == reg_msg->pid) { | |
2032 | *ppid = reg_msg->ppid; | |
2033 | } else { | |
2034 | *ppid = 0; | |
2035 | } | |
2036 | return 0; | |
2037 | } | |
2038 | #elif defined(__FreeBSD__) | |
2039 | #include <sys/ucred.h> | |
e494a9cd | 2040 | #include <sys/un.h> |
a834901f MD |
2041 | |
2042 | /* | |
2043 | * Override application uid/gid with unix socket credentials. Use the | |
2044 | * first group of the cr_groups. | |
2045 | * Use the pid and ppid provided by the application on registration. | |
2046 | */ | |
2047 | static | |
2048 | int get_cred(int sock, | |
2049 | const struct ustctl_reg_msg *reg_msg, | |
2050 | uint32_t *pid, | |
2051 | uint32_t *ppid, | |
2052 | uint32_t *uid, | |
2053 | uint32_t *gid) | |
2054 | { | |
2055 | struct xucred xucred; | |
2056 | socklen_t xucred_len = sizeof(struct xucred); | |
2057 | int ret; | |
2058 | ||
2059 | ret = getsockopt(sock, SOL_SOCKET, LOCAL_PEERCRED, &xucred, &xucred_len); | |
2060 | if (ret) { | |
2061 | return -LTTNG_UST_ERR_PEERCRED; | |
2062 | } | |
2063 | if (xucred.cr_version != XUCRED_VERSION || xucred.cr_ngroups < 1) { | |
2064 | return -LTTNG_UST_ERR_PEERCRED; | |
2065 | } | |
2066 | DBG("Unix socket peercred [ uid: %u, gid: %u ], " | |
2067 | "application registered claiming [ pid: %d, ppid: %d, uid: %u, gid: %u ]", | |
e494a9cd | 2068 | xucred.cr_uid, xucred.cr_groups[0], |
a834901f MD |
2069 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); |
2070 | *pid = reg_msg->pid; | |
2071 | *ppid = reg_msg->ppid; | |
e494a9cd | 2072 | *uid = xucred.cr_uid; |
a834901f MD |
2073 | *gid = xucred.cr_groups[0]; |
2074 | return 0; | |
2075 | } | |
2076 | #else | |
2077 | #warning "Using insecure fallback: trusting user id provided by registered applications. Please consider implementing use of unix socket credentials on your platform." | |
2078 | static | |
2079 | int get_cred(int sock, | |
2080 | const struct ustctl_reg_msg *reg_msg, | |
2081 | uint32_t *pid, | |
2082 | uint32_t *ppid, | |
2083 | uint32_t *uid, | |
2084 | uint32_t *gid) | |
2085 | { | |
2086 | DBG("Application registered claiming [ pid: %u, ppid: %d, uid: %u, gid: %u ]", | |
2087 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); | |
2088 | *pid = reg_msg->pid; | |
2089 | *ppid = reg_msg->ppid; | |
2090 | *uid = reg_msg->uid; | |
2091 | *gid = reg_msg->gid; | |
2092 | return 0; | |
2093 | } | |
2094 | #endif | |
2095 | ||
32ce8569 MD |
2096 | /* |
2097 | * Returns 0 on success, negative error value on error. | |
2098 | */ | |
2099 | int ustctl_recv_reg_msg(int sock, | |
2100 | enum ustctl_socket_type *type, | |
2101 | uint32_t *major, | |
2102 | uint32_t *minor, | |
2103 | uint32_t *pid, | |
2104 | uint32_t *ppid, | |
2105 | uint32_t *uid, | |
2106 | uint32_t *gid, | |
2107 | uint32_t *bits_per_long, | |
2108 | uint32_t *uint8_t_alignment, | |
2109 | uint32_t *uint16_t_alignment, | |
2110 | uint32_t *uint32_t_alignment, | |
2111 | uint32_t *uint64_t_alignment, | |
2112 | uint32_t *long_alignment, | |
2113 | int *byte_order, | |
2114 | char *name) | |
2115 | { | |
2116 | ssize_t len; | |
2117 | struct ustctl_reg_msg reg_msg; | |
2118 | ||
2119 | len = ustcomm_recv_unix_sock(sock, ®_msg, sizeof(reg_msg)); | |
2120 | if (len > 0 && len != sizeof(reg_msg)) | |
2121 | return -EIO; | |
2122 | if (len == 0) | |
2123 | return -EPIPE; | |
2124 | if (len < 0) | |
2125 | return len; | |
2126 | ||
fd17d7ce | 2127 | if (reg_msg.magic == LTTNG_UST_ABI_COMM_MAGIC) { |
32ce8569 MD |
2128 | *byte_order = BYTE_ORDER == BIG_ENDIAN ? |
2129 | BIG_ENDIAN : LITTLE_ENDIAN; | |
fd17d7ce | 2130 | } else if (reg_msg.magic == bswap_32(LTTNG_UST_ABI_COMM_MAGIC)) { |
32ce8569 MD |
2131 | *byte_order = BYTE_ORDER == BIG_ENDIAN ? |
2132 | LITTLE_ENDIAN : BIG_ENDIAN; | |
2133 | } else { | |
2134 | return -LTTNG_UST_ERR_INVAL_MAGIC; | |
2135 | } | |
2136 | switch (reg_msg.socket_type) { | |
2137 | case 0: *type = USTCTL_SOCKET_CMD; | |
2138 | break; | |
2139 | case 1: *type = USTCTL_SOCKET_NOTIFY; | |
2140 | break; | |
2141 | default: | |
2142 | return -LTTNG_UST_ERR_INVAL_SOCKET_TYPE; | |
2143 | } | |
2144 | *major = reg_msg.major; | |
2145 | *minor = reg_msg.minor; | |
32ce8569 MD |
2146 | *bits_per_long = reg_msg.bits_per_long; |
2147 | *uint8_t_alignment = reg_msg.uint8_t_alignment; | |
2148 | *uint16_t_alignment = reg_msg.uint16_t_alignment; | |
2149 | *uint32_t_alignment = reg_msg.uint32_t_alignment; | |
2150 | *uint64_t_alignment = reg_msg.uint64_t_alignment; | |
2151 | *long_alignment = reg_msg.long_alignment; | |
2152 | memcpy(name, reg_msg.name, LTTNG_UST_ABI_PROCNAME_LEN); | |
6a359b8a MD |
2153 | if (reg_msg.major < LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE || |
2154 | reg_msg.major > LTTNG_UST_ABI_MAJOR_VERSION) { | |
32ce8569 MD |
2155 | return -LTTNG_UST_ERR_UNSUP_MAJOR; |
2156 | } | |
a834901f | 2157 | return get_cred(sock, ®_msg, pid, ppid, uid, gid); |
32ce8569 MD |
2158 | } |
2159 | ||
2160 | int ustctl_recv_notify(int sock, enum ustctl_notify_cmd *notify_cmd) | |
2161 | { | |
2162 | struct ustcomm_notify_hdr header; | |
2163 | ssize_t len; | |
2164 | ||
2165 | len = ustcomm_recv_unix_sock(sock, &header, sizeof(header)); | |
2166 | if (len > 0 && len != sizeof(header)) | |
2167 | return -EIO; | |
2168 | if (len == 0) | |
2169 | return -EPIPE; | |
2170 | if (len < 0) | |
2171 | return len; | |
2172 | switch (header.notify_cmd) { | |
2173 | case 0: | |
2174 | *notify_cmd = USTCTL_NOTIFY_CMD_EVENT; | |
2175 | break; | |
2176 | case 1: | |
2177 | *notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL; | |
2178 | break; | |
c785c634 MD |
2179 | case 2: |
2180 | *notify_cmd = USTCTL_NOTIFY_CMD_ENUM; | |
2181 | break; | |
32ce8569 MD |
2182 | default: |
2183 | return -EINVAL; | |
2184 | } | |
2185 | return 0; | |
2186 | } | |
2187 | ||
2188 | /* | |
2189 | * Returns 0 on success, negative error value on error. | |
2190 | */ | |
2191 | int ustctl_recv_register_event(int sock, | |
2192 | int *session_objd, | |
2193 | int *channel_objd, | |
2194 | char *event_name, | |
2195 | int *loglevel, | |
2196 | char **signature, | |
2197 | size_t *nr_fields, | |
2198 | struct ustctl_field **fields, | |
2199 | char **model_emf_uri) | |
2200 | { | |
2201 | ssize_t len; | |
2202 | struct ustcomm_notify_event_msg msg; | |
2203 | size_t signature_len, fields_len, model_emf_uri_len; | |
2204 | char *a_sign = NULL, *a_model_emf_uri = NULL; | |
2205 | struct ustctl_field *a_fields = NULL; | |
2206 | ||
2207 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2208 | if (len > 0 && len != sizeof(msg)) | |
2209 | return -EIO; | |
2210 | if (len == 0) | |
2211 | return -EPIPE; | |
2212 | if (len < 0) | |
2213 | return len; | |
2214 | ||
2215 | *session_objd = msg.session_objd; | |
2216 | *channel_objd = msg.channel_objd; | |
fd17d7ce MD |
2217 | strncpy(event_name, msg.event_name, LTTNG_UST_ABI_SYM_NAME_LEN); |
2218 | event_name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; | |
32ce8569 MD |
2219 | *loglevel = msg.loglevel; |
2220 | signature_len = msg.signature_len; | |
2221 | fields_len = msg.fields_len; | |
2222 | ||
2223 | if (fields_len % sizeof(*a_fields) != 0) { | |
2224 | return -EINVAL; | |
2225 | } | |
2226 | ||
2227 | model_emf_uri_len = msg.model_emf_uri_len; | |
2228 | ||
2229 | /* recv signature. contains at least \0. */ | |
2230 | a_sign = zmalloc(signature_len); | |
2231 | if (!a_sign) | |
2232 | return -ENOMEM; | |
2233 | len = ustcomm_recv_unix_sock(sock, a_sign, signature_len); | |
2234 | if (len > 0 && len != signature_len) { | |
2235 | len = -EIO; | |
2236 | goto signature_error; | |
2237 | } | |
2238 | if (len == 0) { | |
2239 | len = -EPIPE; | |
2240 | goto signature_error; | |
2241 | } | |
2242 | if (len < 0) { | |
2243 | goto signature_error; | |
2244 | } | |
2245 | /* Enforce end of string */ | |
111198c2 | 2246 | a_sign[signature_len - 1] = '\0'; |
32ce8569 MD |
2247 | |
2248 | /* recv fields */ | |
2249 | if (fields_len) { | |
2250 | a_fields = zmalloc(fields_len); | |
2251 | if (!a_fields) { | |
2252 | len = -ENOMEM; | |
2253 | goto signature_error; | |
2254 | } | |
2255 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2256 | if (len > 0 && len != fields_len) { | |
2257 | len = -EIO; | |
2258 | goto fields_error; | |
2259 | } | |
2260 | if (len == 0) { | |
2261 | len = -EPIPE; | |
2262 | goto fields_error; | |
2263 | } | |
2264 | if (len < 0) { | |
2265 | goto fields_error; | |
2266 | } | |
2267 | } | |
2268 | ||
2269 | if (model_emf_uri_len) { | |
2270 | /* recv model_emf_uri_len */ | |
2271 | a_model_emf_uri = zmalloc(model_emf_uri_len); | |
2272 | if (!a_model_emf_uri) { | |
2273 | len = -ENOMEM; | |
2274 | goto fields_error; | |
2275 | } | |
2276 | len = ustcomm_recv_unix_sock(sock, a_model_emf_uri, | |
2277 | model_emf_uri_len); | |
2278 | if (len > 0 && len != model_emf_uri_len) { | |
2279 | len = -EIO; | |
2280 | goto model_error; | |
2281 | } | |
2282 | if (len == 0) { | |
2283 | len = -EPIPE; | |
2284 | goto model_error; | |
2285 | } | |
2286 | if (len < 0) { | |
2287 | goto model_error; | |
2288 | } | |
2289 | /* Enforce end of string */ | |
2290 | a_model_emf_uri[model_emf_uri_len - 1] = '\0'; | |
2291 | } | |
2292 | ||
2293 | *signature = a_sign; | |
2294 | *nr_fields = fields_len / sizeof(*a_fields); | |
2295 | *fields = a_fields; | |
2296 | *model_emf_uri = a_model_emf_uri; | |
2297 | ||
2298 | return 0; | |
2299 | ||
2300 | model_error: | |
2301 | free(a_model_emf_uri); | |
2302 | fields_error: | |
2303 | free(a_fields); | |
2304 | signature_error: | |
2305 | free(a_sign); | |
2306 | return len; | |
2307 | } | |
2308 | ||
2309 | /* | |
2310 | * Returns 0 on success, negative error value on error. | |
2311 | */ | |
2312 | int ustctl_reply_register_event(int sock, | |
2313 | uint32_t id, | |
2314 | int ret_code) | |
2315 | { | |
2316 | ssize_t len; | |
2317 | struct { | |
2318 | struct ustcomm_notify_hdr header; | |
2319 | struct ustcomm_notify_event_reply r; | |
2320 | } reply; | |
2321 | ||
2322 | memset(&reply, 0, sizeof(reply)); | |
2323 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_EVENT; | |
2324 | reply.r.ret_code = ret_code; | |
2325 | reply.r.event_id = id; | |
2326 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2327 | if (len > 0 && len != sizeof(reply)) | |
2328 | return -EIO; | |
2329 | if (len < 0) | |
2330 | return len; | |
2331 | return 0; | |
2332 | } | |
2333 | ||
c785c634 MD |
2334 | /* |
2335 | * Returns 0 on success, negative UST or system error value on error. | |
2336 | */ | |
2337 | int ustctl_recv_register_enum(int sock, | |
2338 | int *session_objd, | |
2339 | char *enum_name, | |
2340 | struct ustctl_enum_entry **entries, | |
2341 | size_t *nr_entries) | |
2342 | { | |
2343 | ssize_t len; | |
2344 | struct ustcomm_notify_enum_msg msg; | |
2345 | size_t entries_len; | |
2346 | struct ustctl_enum_entry *a_entries = NULL; | |
2347 | ||
2348 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2349 | if (len > 0 && len != sizeof(msg)) | |
2350 | return -EIO; | |
2351 | if (len == 0) | |
2352 | return -EPIPE; | |
2353 | if (len < 0) | |
2354 | return len; | |
2355 | ||
2356 | *session_objd = msg.session_objd; | |
fd17d7ce MD |
2357 | strncpy(enum_name, msg.enum_name, LTTNG_UST_ABI_SYM_NAME_LEN); |
2358 | enum_name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; | |
c785c634 MD |
2359 | entries_len = msg.entries_len; |
2360 | ||
2361 | if (entries_len % sizeof(*a_entries) != 0) { | |
2362 | return -EINVAL; | |
2363 | } | |
2364 | ||
2365 | /* recv entries */ | |
2366 | if (entries_len) { | |
2367 | a_entries = zmalloc(entries_len); | |
2368 | if (!a_entries) | |
2369 | return -ENOMEM; | |
2370 | len = ustcomm_recv_unix_sock(sock, a_entries, entries_len); | |
2371 | if (len > 0 && len != entries_len) { | |
2372 | len = -EIO; | |
2373 | goto entries_error; | |
2374 | } | |
2375 | if (len == 0) { | |
2376 | len = -EPIPE; | |
2377 | goto entries_error; | |
2378 | } | |
2379 | if (len < 0) { | |
2380 | goto entries_error; | |
2381 | } | |
2382 | } | |
2383 | *nr_entries = entries_len / sizeof(*a_entries); | |
2384 | *entries = a_entries; | |
2385 | ||
2386 | return 0; | |
2387 | ||
2388 | entries_error: | |
2389 | free(a_entries); | |
2390 | return len; | |
2391 | } | |
2392 | ||
2393 | /* | |
2394 | * Returns 0 on success, negative error value on error. | |
2395 | */ | |
2396 | int ustctl_reply_register_enum(int sock, | |
2397 | uint64_t id, | |
2398 | int ret_code) | |
2399 | { | |
2400 | ssize_t len; | |
2401 | struct { | |
2402 | struct ustcomm_notify_hdr header; | |
2403 | struct ustcomm_notify_enum_reply r; | |
2404 | } reply; | |
2405 | ||
2406 | memset(&reply, 0, sizeof(reply)); | |
2407 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_ENUM; | |
2408 | reply.r.ret_code = ret_code; | |
2409 | reply.r.enum_id = id; | |
2410 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2411 | if (len > 0 && len != sizeof(reply)) | |
2412 | return -EIO; | |
2413 | if (len < 0) | |
2414 | return len; | |
2415 | return 0; | |
2416 | } | |
2417 | ||
32ce8569 MD |
2418 | /* |
2419 | * Returns 0 on success, negative UST or system error value on error. | |
2420 | */ | |
2421 | int ustctl_recv_register_channel(int sock, | |
2422 | int *session_objd, /* session descriptor (output) */ | |
2423 | int *channel_objd, /* channel descriptor (output) */ | |
2424 | size_t *nr_fields, | |
2425 | struct ustctl_field **fields) | |
2426 | { | |
2427 | ssize_t len; | |
2428 | struct ustcomm_notify_channel_msg msg; | |
2429 | size_t fields_len; | |
2430 | struct ustctl_field *a_fields; | |
2431 | ||
2432 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2433 | if (len > 0 && len != sizeof(msg)) | |
2434 | return -EIO; | |
2435 | if (len == 0) | |
2436 | return -EPIPE; | |
2437 | if (len < 0) | |
2438 | return len; | |
2439 | ||
2440 | *session_objd = msg.session_objd; | |
2441 | *channel_objd = msg.channel_objd; | |
2442 | fields_len = msg.ctx_fields_len; | |
2443 | ||
2444 | if (fields_len % sizeof(*a_fields) != 0) { | |
2445 | return -EINVAL; | |
2446 | } | |
2447 | ||
2448 | /* recv fields */ | |
2449 | if (fields_len) { | |
2450 | a_fields = zmalloc(fields_len); | |
2451 | if (!a_fields) { | |
2452 | len = -ENOMEM; | |
2453 | goto alloc_error; | |
2454 | } | |
2455 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2456 | if (len > 0 && len != fields_len) { | |
2457 | len = -EIO; | |
2458 | goto fields_error; | |
2459 | } | |
2460 | if (len == 0) { | |
2461 | len = -EPIPE; | |
2462 | goto fields_error; | |
2463 | } | |
2464 | if (len < 0) { | |
2465 | goto fields_error; | |
2466 | } | |
2467 | *fields = a_fields; | |
2468 | } else { | |
2469 | *fields = NULL; | |
2470 | } | |
2471 | *nr_fields = fields_len / sizeof(*a_fields); | |
2472 | return 0; | |
2473 | ||
2474 | fields_error: | |
2475 | free(a_fields); | |
2476 | alloc_error: | |
2477 | return len; | |
2478 | } | |
2479 | ||
2480 | /* | |
2481 | * Returns 0 on success, negative error value on error. | |
2482 | */ | |
2483 | int ustctl_reply_register_channel(int sock, | |
2484 | uint32_t chan_id, | |
2485 | enum ustctl_channel_header header_type, | |
2486 | int ret_code) | |
2487 | { | |
2488 | ssize_t len; | |
2489 | struct { | |
2490 | struct ustcomm_notify_hdr header; | |
2491 | struct ustcomm_notify_channel_reply r; | |
2492 | } reply; | |
2493 | ||
2494 | memset(&reply, 0, sizeof(reply)); | |
2495 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL; | |
2496 | reply.r.ret_code = ret_code; | |
2497 | reply.r.chan_id = chan_id; | |
2498 | switch (header_type) { | |
2499 | case USTCTL_CHANNEL_HEADER_COMPACT: | |
2500 | reply.r.header_type = 1; | |
2501 | break; | |
2502 | case USTCTL_CHANNEL_HEADER_LARGE: | |
2503 | reply.r.header_type = 2; | |
2504 | break; | |
2505 | default: | |
2506 | reply.r.header_type = 0; | |
2507 | break; | |
2508 | } | |
2509 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2510 | if (len > 0 && len != sizeof(reply)) | |
2511 | return -EIO; | |
2512 | if (len < 0) | |
2513 | return len; | |
2514 | return 0; | |
2515 | } | |
2516 | ||
f53329f3 JD |
2517 | /* Regenerate the statedump. */ |
2518 | int ustctl_regenerate_statedump(int sock, int handle) | |
2519 | { | |
2520 | struct ustcomm_ust_msg lum; | |
2521 | struct ustcomm_ust_reply lur; | |
2522 | int ret; | |
2523 | ||
2524 | memset(&lum, 0, sizeof(lum)); | |
2525 | lum.handle = handle; | |
fd17d7ce | 2526 | lum.cmd = LTTNG_UST_ABI_SESSION_STATEDUMP; |
f53329f3 JD |
2527 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
2528 | if (ret) | |
2529 | return ret; | |
2530 | DBG("Regenerated statedump for handle %u", handle); | |
2531 | return 0; | |
2532 | } | |
2533 | ||
ebabbf58 MD |
2534 | /* counter operations */ |
2535 | ||
2536 | int ustctl_get_nr_cpu_per_counter(void) | |
2537 | { | |
74cc1f59 | 2538 | return num_possible_cpus(); |
ebabbf58 MD |
2539 | } |
2540 | ||
2541 | struct ustctl_daemon_counter * | |
2542 | ustctl_create_counter(size_t nr_dimensions, | |
2543 | const struct ustctl_counter_dimension *dimensions, | |
2544 | int64_t global_sum_step, | |
2545 | int global_counter_fd, | |
2546 | int nr_counter_cpu_fds, | |
2547 | const int *counter_cpu_fds, | |
2548 | enum ustctl_counter_bitness bitness, | |
2549 | enum ustctl_counter_arithmetic arithmetic, | |
81bc4972 MD |
2550 | uint32_t alloc_flags, |
2551 | bool coalesce_hits) | |
ebabbf58 MD |
2552 | { |
2553 | const char *transport_name; | |
2554 | struct ustctl_daemon_counter *counter; | |
2555 | struct lttng_counter_transport *transport; | |
2556 | struct lttng_counter_dimension ust_dim[LTTNG_COUNTER_DIMENSION_MAX]; | |
2557 | size_t i; | |
2558 | ||
2559 | if (nr_dimensions > LTTNG_COUNTER_DIMENSION_MAX) | |
2560 | return NULL; | |
2561 | /* Currently, only per-cpu allocation is supported. */ | |
2562 | switch (alloc_flags) { | |
2563 | case USTCTL_COUNTER_ALLOC_PER_CPU: | |
2564 | break; | |
2565 | ||
2566 | case USTCTL_COUNTER_ALLOC_PER_CPU | USTCTL_COUNTER_ALLOC_GLOBAL: | |
2567 | case USTCTL_COUNTER_ALLOC_GLOBAL: | |
2568 | default: | |
2569 | return NULL; | |
2570 | } | |
2571 | switch (bitness) { | |
2572 | case USTCTL_COUNTER_BITNESS_32: | |
2573 | switch (arithmetic) { | |
2574 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2575 | transport_name = "counter-per-cpu-32-modular"; | |
2576 | break; | |
2577 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2578 | transport_name = "counter-per-cpu-32-saturation"; | |
2579 | break; | |
2580 | default: | |
2581 | return NULL; | |
2582 | } | |
2583 | break; | |
2584 | case USTCTL_COUNTER_BITNESS_64: | |
2585 | switch (arithmetic) { | |
2586 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2587 | transport_name = "counter-per-cpu-64-modular"; | |
2588 | break; | |
2589 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2590 | transport_name = "counter-per-cpu-64-saturation"; | |
2591 | break; | |
2592 | default: | |
2593 | return NULL; | |
2594 | } | |
2595 | break; | |
2596 | default: | |
2597 | return NULL; | |
2598 | } | |
2599 | ||
2600 | transport = lttng_counter_transport_find(transport_name); | |
2601 | if (!transport) { | |
2602 | DBG("LTTng transport %s not found\n", | |
2603 | transport_name); | |
2604 | return NULL; | |
2605 | } | |
2606 | ||
2607 | counter = zmalloc(sizeof(*counter)); | |
2608 | if (!counter) | |
2609 | return NULL; | |
2610 | counter->attr = zmalloc(sizeof(*counter->attr)); | |
2611 | if (!counter->attr) | |
2612 | goto free_counter; | |
2613 | counter->attr->bitness = bitness; | |
2614 | counter->attr->arithmetic = arithmetic; | |
2615 | counter->attr->nr_dimensions = nr_dimensions; | |
2616 | counter->attr->global_sum_step = global_sum_step; | |
81bc4972 | 2617 | counter->attr->coalesce_hits = coalesce_hits; |
ebabbf58 MD |
2618 | for (i = 0; i < nr_dimensions; i++) |
2619 | counter->attr->dimensions[i] = dimensions[i]; | |
2620 | ||
2621 | for (i = 0; i < nr_dimensions; i++) { | |
2622 | ust_dim[i].size = dimensions[i].size; | |
2623 | ust_dim[i].underflow_index = dimensions[i].underflow_index; | |
2624 | ust_dim[i].overflow_index = dimensions[i].overflow_index; | |
2625 | ust_dim[i].has_underflow = dimensions[i].has_underflow; | |
2626 | ust_dim[i].has_overflow = dimensions[i].has_overflow; | |
2627 | } | |
2628 | counter->counter = transport->ops.counter_create(nr_dimensions, | |
2629 | ust_dim, global_sum_step, global_counter_fd, | |
2630 | nr_counter_cpu_fds, counter_cpu_fds, true); | |
2631 | if (!counter->counter) | |
2632 | goto free_attr; | |
2633 | counter->ops = &transport->ops; | |
2634 | return counter; | |
2635 | ||
2636 | free_attr: | |
2637 | free(counter->attr); | |
2638 | free_counter: | |
2639 | free(counter); | |
2640 | return NULL; | |
2641 | } | |
2642 | ||
2643 | int ustctl_create_counter_data(struct ustctl_daemon_counter *counter, | |
fd17d7ce | 2644 | struct lttng_ust_abi_object_data **_counter_data) |
ebabbf58 | 2645 | { |
fd17d7ce MD |
2646 | struct lttng_ust_abi_object_data *counter_data; |
2647 | struct lttng_ust_abi_counter_conf counter_conf = {0}; | |
ebabbf58 MD |
2648 | size_t i; |
2649 | int ret; | |
2650 | ||
2651 | switch (counter->attr->arithmetic) { | |
2652 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
fd17d7ce | 2653 | counter_conf.arithmetic = LTTNG_UST_ABI_COUNTER_ARITHMETIC_MODULAR; |
ebabbf58 MD |
2654 | break; |
2655 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
fd17d7ce | 2656 | counter_conf.arithmetic = LTTNG_UST_ABI_COUNTER_ARITHMETIC_SATURATION; |
ebabbf58 MD |
2657 | break; |
2658 | default: | |
2659 | return -EINVAL; | |
2660 | } | |
2661 | switch (counter->attr->bitness) { | |
2662 | case USTCTL_COUNTER_BITNESS_32: | |
fd17d7ce | 2663 | counter_conf.bitness = LTTNG_UST_ABI_COUNTER_BITNESS_32; |
ebabbf58 MD |
2664 | break; |
2665 | case USTCTL_COUNTER_BITNESS_64: | |
fd17d7ce | 2666 | counter_conf.bitness = LTTNG_UST_ABI_COUNTER_BITNESS_64; |
ebabbf58 MD |
2667 | break; |
2668 | default: | |
2669 | return -EINVAL; | |
2670 | } | |
2671 | counter_conf.number_dimensions = counter->attr->nr_dimensions; | |
2672 | counter_conf.global_sum_step = counter->attr->global_sum_step; | |
81bc4972 | 2673 | counter_conf.coalesce_hits = counter->attr->coalesce_hits; |
ebabbf58 MD |
2674 | for (i = 0; i < counter->attr->nr_dimensions; i++) { |
2675 | counter_conf.dimensions[i].size = counter->attr->dimensions[i].size; | |
2676 | counter_conf.dimensions[i].underflow_index = counter->attr->dimensions[i].underflow_index; | |
2677 | counter_conf.dimensions[i].overflow_index = counter->attr->dimensions[i].overflow_index; | |
2678 | counter_conf.dimensions[i].has_underflow = counter->attr->dimensions[i].has_underflow; | |
2679 | counter_conf.dimensions[i].has_overflow = counter->attr->dimensions[i].has_overflow; | |
2680 | } | |
2681 | ||
2682 | counter_data = zmalloc(sizeof(*counter_data)); | |
2683 | if (!counter_data) { | |
2684 | ret = -ENOMEM; | |
2685 | goto error_alloc; | |
2686 | } | |
fd17d7ce | 2687 | counter_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER; |
ebabbf58 MD |
2688 | counter_data->handle = -1; |
2689 | ||
2690 | counter_data->size = sizeof(counter_conf); | |
2691 | counter_data->u.counter.data = zmalloc(sizeof(counter_conf)); | |
2692 | if (!counter_data->u.counter.data) { | |
2693 | ret = -ENOMEM; | |
2694 | goto error_alloc_data; | |
2695 | } | |
2696 | ||
2697 | memcpy(counter_data->u.counter.data, &counter_conf, sizeof(counter_conf)); | |
2698 | *_counter_data = counter_data; | |
2699 | ||
2700 | return 0; | |
2701 | ||
2702 | error_alloc_data: | |
2703 | free(counter_data); | |
2704 | error_alloc: | |
2705 | return ret; | |
2706 | } | |
2707 | ||
2708 | int ustctl_create_counter_global_data(struct ustctl_daemon_counter *counter, | |
fd17d7ce | 2709 | struct lttng_ust_abi_object_data **_counter_global_data) |
ebabbf58 | 2710 | { |
fd17d7ce | 2711 | struct lttng_ust_abi_object_data *counter_global_data; |
ebabbf58 MD |
2712 | int ret, fd; |
2713 | size_t len; | |
2714 | ||
2715 | if (lttng_counter_get_global_shm(counter->counter, &fd, &len)) | |
2716 | return -EINVAL; | |
2717 | counter_global_data = zmalloc(sizeof(*counter_global_data)); | |
2718 | if (!counter_global_data) { | |
2719 | ret = -ENOMEM; | |
2720 | goto error_alloc; | |
2721 | } | |
fd17d7ce | 2722 | counter_global_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL; |
ebabbf58 MD |
2723 | counter_global_data->handle = -1; |
2724 | counter_global_data->size = len; | |
2725 | counter_global_data->u.counter_global.shm_fd = fd; | |
2726 | *_counter_global_data = counter_global_data; | |
2727 | return 0; | |
2728 | ||
2729 | error_alloc: | |
2730 | return ret; | |
2731 | } | |
2732 | ||
2733 | int ustctl_create_counter_cpu_data(struct ustctl_daemon_counter *counter, int cpu, | |
fd17d7ce | 2734 | struct lttng_ust_abi_object_data **_counter_cpu_data) |
ebabbf58 | 2735 | { |
fd17d7ce | 2736 | struct lttng_ust_abi_object_data *counter_cpu_data; |
ebabbf58 MD |
2737 | int ret, fd; |
2738 | size_t len; | |
2739 | ||
2740 | if (lttng_counter_get_cpu_shm(counter->counter, cpu, &fd, &len)) | |
2741 | return -EINVAL; | |
2742 | counter_cpu_data = zmalloc(sizeof(*counter_cpu_data)); | |
2743 | if (!counter_cpu_data) { | |
2744 | ret = -ENOMEM; | |
2745 | goto error_alloc; | |
2746 | } | |
fd17d7ce | 2747 | counter_cpu_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU; |
ebabbf58 MD |
2748 | counter_cpu_data->handle = -1; |
2749 | counter_cpu_data->size = len; | |
2750 | counter_cpu_data->u.counter_cpu.shm_fd = fd; | |
2751 | counter_cpu_data->u.counter_cpu.cpu_nr = cpu; | |
2752 | *_counter_cpu_data = counter_cpu_data; | |
2753 | return 0; | |
2754 | ||
2755 | error_alloc: | |
2756 | return ret; | |
2757 | } | |
2758 | ||
2759 | void ustctl_destroy_counter(struct ustctl_daemon_counter *counter) | |
2760 | { | |
2761 | counter->ops->counter_destroy(counter->counter); | |
2762 | free(counter->attr); | |
2763 | free(counter); | |
2764 | } | |
2765 | ||
2766 | int ustctl_send_counter_data_to_ust(int sock, int parent_handle, | |
fd17d7ce | 2767 | struct lttng_ust_abi_object_data *counter_data) |
ebabbf58 MD |
2768 | { |
2769 | struct ustcomm_ust_msg lum; | |
2770 | struct ustcomm_ust_reply lur; | |
2771 | int ret; | |
2772 | size_t size; | |
2773 | ssize_t len; | |
2774 | ||
2775 | if (!counter_data) | |
2776 | return -EINVAL; | |
2777 | ||
2778 | size = counter_data->size; | |
2779 | memset(&lum, 0, sizeof(lum)); | |
2780 | lum.handle = parent_handle; | |
fd17d7ce | 2781 | lum.cmd = LTTNG_UST_ABI_COUNTER; |
ebabbf58 MD |
2782 | lum.u.counter.len = size; |
2783 | ret = ustcomm_send_app_msg(sock, &lum); | |
2784 | if (ret) | |
2785 | return ret; | |
2786 | ||
2787 | /* Send counter data */ | |
2788 | len = ustcomm_send_unix_sock(sock, counter_data->u.counter.data, size); | |
2789 | if (len != size) { | |
2790 | if (len < 0) | |
2791 | return len; | |
2792 | else | |
2793 | return -EIO; | |
2794 | } | |
2795 | ||
2796 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2797 | if (!ret) { | |
2798 | counter_data->handle = lur.ret_val; | |
2799 | } | |
2800 | return ret; | |
2801 | } | |
2802 | ||
2803 | int ustctl_send_counter_global_data_to_ust(int sock, | |
fd17d7ce MD |
2804 | struct lttng_ust_abi_object_data *counter_data, |
2805 | struct lttng_ust_abi_object_data *counter_global_data) | |
ebabbf58 MD |
2806 | { |
2807 | struct ustcomm_ust_msg lum; | |
2808 | struct ustcomm_ust_reply lur; | |
2809 | int ret, shm_fd[1]; | |
2810 | size_t size; | |
2811 | ssize_t len; | |
2812 | ||
2813 | if (!counter_data || !counter_global_data) | |
2814 | return -EINVAL; | |
2815 | ||
2816 | size = counter_global_data->size; | |
2817 | memset(&lum, 0, sizeof(lum)); | |
2818 | lum.handle = counter_data->handle; /* parent handle */ | |
fd17d7ce | 2819 | lum.cmd = LTTNG_UST_ABI_COUNTER_GLOBAL; |
ebabbf58 MD |
2820 | lum.u.counter_global.len = size; |
2821 | ret = ustcomm_send_app_msg(sock, &lum); | |
2822 | if (ret) | |
2823 | return ret; | |
2824 | ||
2825 | shm_fd[0] = counter_global_data->u.counter_global.shm_fd; | |
2826 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
2827 | if (len <= 0) { | |
2828 | if (len < 0) | |
2829 | return len; | |
2830 | else | |
2831 | return -EIO; | |
2832 | } | |
2833 | ||
2834 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2835 | if (!ret) { | |
2836 | counter_global_data->handle = lur.ret_val; | |
2837 | } | |
2838 | return ret; | |
2839 | } | |
2840 | ||
2841 | int ustctl_send_counter_cpu_data_to_ust(int sock, | |
fd17d7ce MD |
2842 | struct lttng_ust_abi_object_data *counter_data, |
2843 | struct lttng_ust_abi_object_data *counter_cpu_data) | |
ebabbf58 MD |
2844 | { |
2845 | struct ustcomm_ust_msg lum; | |
2846 | struct ustcomm_ust_reply lur; | |
2847 | int ret, shm_fd[1]; | |
2848 | size_t size; | |
2849 | ssize_t len; | |
2850 | ||
2851 | if (!counter_data || !counter_cpu_data) | |
2852 | return -EINVAL; | |
2853 | ||
2854 | size = counter_cpu_data->size; | |
2855 | memset(&lum, 0, sizeof(lum)); | |
2856 | lum.handle = counter_data->handle; /* parent handle */ | |
fd17d7ce | 2857 | lum.cmd = LTTNG_UST_ABI_COUNTER_CPU; |
ebabbf58 MD |
2858 | lum.u.counter_cpu.len = size; |
2859 | lum.u.counter_cpu.cpu_nr = counter_cpu_data->u.counter_cpu.cpu_nr; | |
2860 | ret = ustcomm_send_app_msg(sock, &lum); | |
2861 | if (ret) | |
2862 | return ret; | |
2863 | ||
2864 | shm_fd[0] = counter_cpu_data->u.counter_global.shm_fd; | |
2865 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
2866 | if (len <= 0) { | |
2867 | if (len < 0) | |
2868 | return len; | |
2869 | else | |
2870 | return -EIO; | |
2871 | } | |
2872 | ||
2873 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2874 | if (!ret) { | |
2875 | counter_cpu_data->handle = lur.ret_val; | |
2876 | } | |
2877 | return ret; | |
2878 | } | |
2879 | ||
2880 | int ustctl_counter_read(struct ustctl_daemon_counter *counter, | |
2881 | const size_t *dimension_indexes, | |
2882 | int cpu, int64_t *value, | |
2883 | bool *overflow, bool *underflow) | |
2884 | { | |
2885 | return counter->ops->counter_read(counter->counter, dimension_indexes, cpu, | |
2886 | value, overflow, underflow); | |
2887 | } | |
2888 | ||
2889 | int ustctl_counter_aggregate(struct ustctl_daemon_counter *counter, | |
2890 | const size_t *dimension_indexes, | |
2891 | int64_t *value, | |
2892 | bool *overflow, bool *underflow) | |
2893 | { | |
2894 | return counter->ops->counter_aggregate(counter->counter, dimension_indexes, | |
2895 | value, overflow, underflow); | |
2896 | } | |
2897 | ||
2898 | int ustctl_counter_clear(struct ustctl_daemon_counter *counter, | |
2899 | const size_t *dimension_indexes) | |
2900 | { | |
2901 | return counter->ops->counter_clear(counter->counter, dimension_indexes); | |
2902 | } | |
2903 | ||
465a0d04 | 2904 | static |
fca97dfd | 2905 | void lttng_ust_ctl_ctor(void) |
465a0d04 MJ |
2906 | __attribute__((constructor)); |
2907 | static | |
fca97dfd | 2908 | void lttng_ust_ctl_ctor(void) |
74d81a6c | 2909 | { |
fca97dfd MJ |
2910 | /* |
2911 | * Call the liblttng-ust-common constructor to ensure it runs first. | |
2912 | */ | |
2913 | lttng_ust_common_ctor(); | |
2914 | ||
f9364363 | 2915 | lttng_ust_clock_init(); |
14e0a135 MD |
2916 | lttng_ust_ring_buffer_clients_init(); |
2917 | lttng_ust_counter_clients_init(); | |
03d2d293 | 2918 | lib_ringbuffer_signal_init(); |
74d81a6c MD |
2919 | } |
2920 | ||
c589eca2 MJ |
2921 | static |
2922 | void ustctl_exit(void) | |
2923 | __attribute__((destructor)); | |
2924 | static | |
74d81a6c MD |
2925 | void ustctl_exit(void) |
2926 | { | |
14e0a135 MD |
2927 | lttng_ust_counter_clients_exit(); |
2928 | lttng_ust_ring_buffer_clients_exit(); | |
57773204 | 2929 | } |