Commit | Line | Data |
---|---|---|
57773204 MD |
1 | /* |
2 | * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca> | |
74d81a6c | 3 | * Copyright (C) 2011-2013 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
57773204 | 4 | * |
e92f3e28 MD |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; version 2 of the License only. | |
57773204 MD |
8 | * |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
e92f3e28 MD |
14 | * You should have received a copy of the GNU General Public License along |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
57773204 MD |
17 | */ |
18 | ||
fb31eb73 | 19 | #include <stdint.h> |
57773204 | 20 | #include <string.h> |
fb31eb73 | 21 | #include <sys/mman.h> |
4e79769f | 22 | #include <unistd.h> |
fb31eb73 | 23 | |
c62a3816 | 24 | #include <lttng/ust-config.h> |
4318ae1b MD |
25 | #include <lttng/ust-ctl.h> |
26 | #include <lttng/ust-abi.h> | |
c1fca457 | 27 | #include <lttng/ust-events.h> |
3208818b | 28 | #include <lttng/ust-endian.h> |
44c72f10 | 29 | #include <usterr-signal-safe.h> |
b728d87e | 30 | #include <ust-comm.h> |
74d81a6c | 31 | #include <helper.h> |
57773204 MD |
32 | |
33 | #include "../libringbuffer/backend.h" | |
34 | #include "../libringbuffer/frontend.h" | |
c9023c93 | 35 | #include "../liblttng-ust/wait.h" |
b2f3252a | 36 | #include "../liblttng-ust/lttng-rb-clients.h" |
f9364363 | 37 | #include "../liblttng-ust/clock.h" |
92ce256d | 38 | #include "../liblttng-ust/getenv.h" |
23d128de | 39 | #include "../liblttng-ust/lttng-tracer-core.h" |
c9023c93 | 40 | |
ebabbf58 MD |
41 | #include "../libcounter/shm.h" |
42 | #include "../libcounter/smp.h" | |
43 | #include "../libcounter/counter.h" | |
44 | ||
c9023c93 MD |
45 | /* |
46 | * Number of milliseconds to retry before failing metadata writes on | |
47 | * buffer full condition. (10 seconds) | |
48 | */ | |
49 | #define LTTNG_METADATA_TIMEOUT_MSEC 10000 | |
57773204 | 50 | |
74d81a6c MD |
51 | /* |
52 | * Channel representation within consumer. | |
53 | */ | |
54 | struct ustctl_consumer_channel { | |
55 | struct lttng_channel *chan; /* lttng channel buffers */ | |
6b120308 | 56 | |
74d81a6c MD |
57 | /* initial attributes */ |
58 | struct ustctl_consumer_channel_attr attr; | |
ff0f5728 MD |
59 | int wait_fd; /* monitor close() */ |
60 | int wakeup_fd; /* monitor close() */ | |
74d81a6c MD |
61 | }; |
62 | ||
63 | /* | |
64 | * Stream representation within consumer. | |
65 | */ | |
66 | struct ustctl_consumer_stream { | |
67 | struct lttng_ust_shm_handle *handle; /* shared-memory handle */ | |
68 | struct lttng_ust_lib_ring_buffer *buf; | |
69 | struct ustctl_consumer_channel *chan; | |
70 | int shm_fd, wait_fd, wakeup_fd; | |
71 | int cpu; | |
72 | uint64_t memory_map_size; | |
73 | }; | |
74 | ||
ebabbf58 MD |
75 | #define USTCTL_COUNTER_ATTR_DIMENSION_MAX 8 |
76 | struct ustctl_counter_attr { | |
77 | enum ustctl_counter_arithmetic arithmetic; | |
78 | enum ustctl_counter_bitness bitness; | |
79 | uint32_t nr_dimensions; | |
80 | int64_t global_sum_step; | |
81 | struct ustctl_counter_dimension dimensions[USTCTL_COUNTER_ATTR_DIMENSION_MAX]; | |
82 | }; | |
83 | ||
84 | /* | |
85 | * Counter representation within daemon. | |
86 | */ | |
87 | struct ustctl_daemon_counter { | |
88 | struct lib_counter *counter; | |
89 | const struct lttng_counter_ops *ops; | |
90 | struct ustctl_counter_attr *attr; /* initial attributes */ | |
91 | }; | |
92 | ||
74d81a6c | 93 | extern void lttng_ring_buffer_client_overwrite_init(void); |
08a3170c | 94 | extern void lttng_ring_buffer_client_overwrite_rt_init(void); |
74d81a6c | 95 | extern void lttng_ring_buffer_client_discard_init(void); |
08a3170c | 96 | extern void lttng_ring_buffer_client_discard_rt_init(void); |
74d81a6c MD |
97 | extern void lttng_ring_buffer_metadata_client_init(void); |
98 | extern void lttng_ring_buffer_client_overwrite_exit(void); | |
08a3170c | 99 | extern void lttng_ring_buffer_client_overwrite_rt_exit(void); |
74d81a6c | 100 | extern void lttng_ring_buffer_client_discard_exit(void); |
08a3170c | 101 | extern void lttng_ring_buffer_client_discard_rt_exit(void); |
74d81a6c | 102 | extern void lttng_ring_buffer_metadata_client_exit(void); |
31677417 | 103 | LTTNG_HIDDEN |
ebabbf58 | 104 | extern void lttng_counter_client_percpu_32_modular_init(void); |
31677417 | 105 | LTTNG_HIDDEN |
ebabbf58 | 106 | extern void lttng_counter_client_percpu_32_modular_exit(void); |
31677417 | 107 | LTTNG_HIDDEN |
ebabbf58 | 108 | extern void lttng_counter_client_percpu_64_modular_init(void); |
31677417 | 109 | LTTNG_HIDDEN |
ebabbf58 | 110 | extern void lttng_counter_client_percpu_64_modular_exit(void); |
74d81a6c | 111 | |
2be0e72c MD |
112 | int ustctl_release_handle(int sock, int handle) |
113 | { | |
114 | struct ustcomm_ust_msg lum; | |
115 | struct ustcomm_ust_reply lur; | |
2be0e72c | 116 | |
74d81a6c MD |
117 | if (sock < 0 || handle < 0) |
118 | return 0; | |
119 | memset(&lum, 0, sizeof(lum)); | |
120 | lum.handle = handle; | |
121 | lum.cmd = LTTNG_UST_RELEASE; | |
122 | return ustcomm_send_app_cmd(sock, &lum, &lur); | |
2be0e72c | 123 | } |
74d81a6c | 124 | |
12388166 MD |
125 | /* |
126 | * If sock is negative, it means we don't have to notify the other side | |
127 | * (e.g. application has already vanished). | |
128 | */ | |
d26228ae | 129 | int ustctl_release_object(int sock, struct lttng_ust_object_data *data) |
57773204 | 130 | { |
57773204 MD |
131 | int ret; |
132 | ||
9bfc503d MD |
133 | if (!data) |
134 | return -EINVAL; | |
135 | ||
74d81a6c MD |
136 | switch (data->type) { |
137 | case LTTNG_UST_OBJECT_TYPE_CHANNEL: | |
ff0f5728 MD |
138 | if (data->u.channel.wakeup_fd >= 0) { |
139 | ret = close(data->u.channel.wakeup_fd); | |
140 | if (ret < 0) { | |
141 | ret = -errno; | |
142 | return ret; | |
143 | } | |
dd6c697c | 144 | data->u.channel.wakeup_fd = -1; |
ff0f5728 | 145 | } |
74d81a6c | 146 | free(data->u.channel.data); |
dd6c697c | 147 | data->u.channel.data = NULL; |
74d81a6c MD |
148 | break; |
149 | case LTTNG_UST_OBJECT_TYPE_STREAM: | |
150 | if (data->u.stream.shm_fd >= 0) { | |
151 | ret = close(data->u.stream.shm_fd); | |
152 | if (ret < 0) { | |
153 | ret = -errno; | |
154 | return ret; | |
155 | } | |
dd6c697c | 156 | data->u.stream.shm_fd = -1; |
d26228ae | 157 | } |
74d81a6c MD |
158 | if (data->u.stream.wakeup_fd >= 0) { |
159 | ret = close(data->u.stream.wakeup_fd); | |
160 | if (ret < 0) { | |
161 | ret = -errno; | |
162 | return ret; | |
163 | } | |
dd6c697c | 164 | data->u.stream.wakeup_fd = -1; |
d26228ae | 165 | } |
74d81a6c | 166 | break; |
32ce8569 MD |
167 | case LTTNG_UST_OBJECT_TYPE_EVENT: |
168 | case LTTNG_UST_OBJECT_TYPE_CONTEXT: | |
d8d2416d FD |
169 | case LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER_GROUP: |
170 | case LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER: | |
32ce8569 | 171 | break; |
ebabbf58 MD |
172 | case LTTNG_UST_OBJECT_TYPE_COUNTER: |
173 | free(data->u.counter.data); | |
174 | data->u.counter.data = NULL; | |
175 | break; | |
176 | case LTTNG_UST_OBJECT_TYPE_COUNTER_GLOBAL: | |
177 | if (data->u.counter_global.shm_fd >= 0) { | |
178 | ret = close(data->u.counter_global.shm_fd); | |
179 | if (ret < 0) { | |
180 | ret = -errno; | |
181 | return ret; | |
182 | } | |
183 | data->u.counter_global.shm_fd = -1; | |
184 | } | |
185 | break; | |
186 | case LTTNG_UST_OBJECT_TYPE_COUNTER_CPU: | |
187 | if (data->u.counter_cpu.shm_fd >= 0) { | |
188 | ret = close(data->u.counter_cpu.shm_fd); | |
189 | if (ret < 0) { | |
190 | ret = -errno; | |
191 | return ret; | |
192 | } | |
193 | data->u.counter_cpu.shm_fd = -1; | |
194 | } | |
195 | break; | |
74d81a6c MD |
196 | default: |
197 | assert(0); | |
d26228ae | 198 | } |
2be0e72c | 199 | return ustctl_release_handle(sock, data->handle); |
57773204 MD |
200 | } |
201 | ||
1c5e467e MD |
202 | /* |
203 | * Send registration done packet to the application. | |
204 | */ | |
205 | int ustctl_register_done(int sock) | |
206 | { | |
207 | struct ustcomm_ust_msg lum; | |
208 | struct ustcomm_ust_reply lur; | |
209 | int ret; | |
210 | ||
211 | DBG("Sending register done command to %d", sock); | |
212 | memset(&lum, 0, sizeof(lum)); | |
213 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
214 | lum.cmd = LTTNG_UST_REGISTER_DONE; | |
215 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
216 | if (ret) | |
217 | return ret; | |
1c5e467e | 218 | return 0; |
1c5e467e MD |
219 | } |
220 | ||
57773204 MD |
221 | /* |
222 | * returns session handle. | |
223 | */ | |
224 | int ustctl_create_session(int sock) | |
225 | { | |
226 | struct ustcomm_ust_msg lum; | |
227 | struct ustcomm_ust_reply lur; | |
228 | int ret, session_handle; | |
229 | ||
230 | /* Create session */ | |
231 | memset(&lum, 0, sizeof(lum)); | |
232 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
233 | lum.cmd = LTTNG_UST_SESSION; | |
234 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
235 | if (ret) | |
236 | return ret; | |
237 | session_handle = lur.ret_val; | |
238 | DBG("received session handle %u", session_handle); | |
239 | return session_handle; | |
240 | } | |
241 | ||
57773204 | 242 | int ustctl_create_event(int sock, struct lttng_ust_event *ev, |
61f02aea MD |
243 | struct lttng_ust_object_data *channel_data, |
244 | struct lttng_ust_object_data **_event_data) | |
57773204 MD |
245 | { |
246 | struct ustcomm_ust_msg lum; | |
247 | struct ustcomm_ust_reply lur; | |
61f02aea | 248 | struct lttng_ust_object_data *event_data; |
57773204 MD |
249 | int ret; |
250 | ||
9bfc503d MD |
251 | if (!channel_data || !_event_data) |
252 | return -EINVAL; | |
253 | ||
74d81a6c | 254 | event_data = zmalloc(sizeof(*event_data)); |
57773204 MD |
255 | if (!event_data) |
256 | return -ENOMEM; | |
32ce8569 | 257 | event_data->type = LTTNG_UST_OBJECT_TYPE_EVENT; |
57773204 MD |
258 | memset(&lum, 0, sizeof(lum)); |
259 | lum.handle = channel_data->handle; | |
260 | lum.cmd = LTTNG_UST_EVENT; | |
261 | strncpy(lum.u.event.name, ev->name, | |
262 | LTTNG_UST_SYM_NAME_LEN); | |
263 | lum.u.event.instrumentation = ev->instrumentation; | |
457a6b58 MD |
264 | lum.u.event.loglevel_type = ev->loglevel_type; |
265 | lum.u.event.loglevel = ev->loglevel; | |
57773204 MD |
266 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
267 | if (ret) { | |
268 | free(event_data); | |
269 | return ret; | |
270 | } | |
271 | event_data->handle = lur.ret_val; | |
272 | DBG("received event handle %u", event_data->handle); | |
273 | *_event_data = event_data; | |
274 | return 0; | |
275 | } | |
276 | ||
53f0df51 | 277 | int ustctl_add_context(int sock, struct lttng_ust_context_attr *ctx, |
61f02aea MD |
278 | struct lttng_ust_object_data *obj_data, |
279 | struct lttng_ust_object_data **_context_data) | |
57773204 MD |
280 | { |
281 | struct ustcomm_ust_msg lum; | |
282 | struct ustcomm_ust_reply lur; | |
53f0df51 JG |
283 | struct lttng_ust_object_data *context_data = NULL; |
284 | char *buf = NULL; | |
285 | size_t len; | |
57773204 MD |
286 | int ret; |
287 | ||
53f0df51 JG |
288 | if (!obj_data || !_context_data) { |
289 | ret = -EINVAL; | |
290 | goto end; | |
291 | } | |
9bfc503d | 292 | |
74d81a6c | 293 | context_data = zmalloc(sizeof(*context_data)); |
53f0df51 JG |
294 | if (!context_data) { |
295 | ret = -ENOMEM; | |
296 | goto end; | |
297 | } | |
32ce8569 | 298 | context_data->type = LTTNG_UST_OBJECT_TYPE_CONTEXT; |
57773204 | 299 | memset(&lum, 0, sizeof(lum)); |
3039d8ed | 300 | lum.handle = obj_data->handle; |
57773204 | 301 | lum.cmd = LTTNG_UST_CONTEXT; |
53f0df51 JG |
302 | |
303 | lum.u.context.ctx = ctx->ctx; | |
304 | switch (ctx->ctx) { | |
305 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: | |
306 | lum.u.context.u.perf_counter = ctx->u.perf_counter; | |
307 | break; | |
308 | case LTTNG_UST_CONTEXT_APP_CONTEXT: | |
309 | { | |
310 | size_t provider_name_len = strlen( | |
311 | ctx->u.app_ctx.provider_name) + 1; | |
312 | size_t ctx_name_len = strlen(ctx->u.app_ctx.ctx_name) + 1; | |
313 | ||
314 | lum.u.context.u.app_ctx.provider_name_len = provider_name_len; | |
315 | lum.u.context.u.app_ctx.ctx_name_len = ctx_name_len; | |
316 | ||
317 | len = provider_name_len + ctx_name_len; | |
318 | buf = zmalloc(len); | |
319 | if (!buf) { | |
320 | ret = -ENOMEM; | |
321 | goto end; | |
322 | } | |
323 | memcpy(buf, ctx->u.app_ctx.provider_name, | |
324 | provider_name_len); | |
325 | memcpy(buf + provider_name_len, ctx->u.app_ctx.ctx_name, | |
326 | ctx_name_len); | |
327 | break; | |
328 | } | |
329 | default: | |
330 | break; | |
331 | } | |
332 | ret = ustcomm_send_app_msg(sock, &lum); | |
333 | if (ret) | |
334 | goto end; | |
335 | if (buf) { | |
336 | /* send var len ctx_name */ | |
337 | ret = ustcomm_send_unix_sock(sock, buf, len); | |
338 | if (ret < 0) { | |
339 | goto end; | |
340 | } | |
341 | if (ret != len) { | |
342 | ret = -EINVAL; | |
343 | goto end; | |
344 | } | |
345 | } | |
346 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
347 | if (ret < 0) { | |
348 | goto end; | |
57773204 | 349 | } |
32ce8569 MD |
350 | context_data->handle = -1; |
351 | DBG("Context created successfully"); | |
57773204 | 352 | *_context_data = context_data; |
53f0df51 JG |
353 | context_data = NULL; |
354 | end: | |
355 | free(context_data); | |
356 | free(buf); | |
57773204 MD |
357 | return ret; |
358 | } | |
359 | ||
cd54f6d9 MD |
360 | int ustctl_set_filter(int sock, struct lttng_ust_filter_bytecode *bytecode, |
361 | struct lttng_ust_object_data *obj_data) | |
362 | { | |
363 | struct ustcomm_ust_msg lum; | |
364 | struct ustcomm_ust_reply lur; | |
365 | int ret; | |
366 | ||
367 | if (!obj_data) | |
368 | return -EINVAL; | |
369 | ||
370 | memset(&lum, 0, sizeof(lum)); | |
371 | lum.handle = obj_data->handle; | |
372 | lum.cmd = LTTNG_UST_FILTER; | |
373 | lum.u.filter.data_size = bytecode->len; | |
374 | lum.u.filter.reloc_offset = bytecode->reloc_offset; | |
e695af51 | 375 | lum.u.filter.seqnum = bytecode->seqnum; |
cd54f6d9 MD |
376 | |
377 | ret = ustcomm_send_app_msg(sock, &lum); | |
d37ecb3f FD |
378 | if (ret) |
379 | return ret; | |
380 | /* send var len bytecode */ | |
381 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
382 | bytecode->len); | |
383 | if (ret < 0) { | |
384 | return ret; | |
385 | } | |
386 | if (ret != bytecode->len) | |
387 | return -EINVAL; | |
388 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
389 | } | |
390 | ||
391 | int ustctl_set_capture(int sock, struct lttng_ust_capture_bytecode *bytecode, | |
392 | struct lttng_ust_object_data *obj_data) | |
393 | { | |
394 | struct ustcomm_ust_msg lum; | |
395 | struct ustcomm_ust_reply lur; | |
396 | int ret; | |
397 | ||
398 | if (!obj_data) | |
399 | return -EINVAL; | |
400 | ||
401 | memset(&lum, 0, sizeof(lum)); | |
402 | lum.handle = obj_data->handle; | |
403 | lum.cmd = LTTNG_UST_CAPTURE; | |
404 | lum.u.capture.data_size = bytecode->len; | |
405 | lum.u.capture.reloc_offset = bytecode->reloc_offset; | |
406 | lum.u.capture.seqnum = bytecode->seqnum; | |
407 | ||
408 | ret = ustcomm_send_app_msg(sock, &lum); | |
cd54f6d9 MD |
409 | if (ret) |
410 | return ret; | |
cd54f6d9 MD |
411 | /* send var len bytecode */ |
412 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
413 | bytecode->len); | |
414 | if (ret < 0) { | |
415 | return ret; | |
416 | } | |
7bc53e94 MD |
417 | if (ret != bytecode->len) |
418 | return -EINVAL; | |
419 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
cd54f6d9 MD |
420 | } |
421 | ||
da57c034 JI |
422 | int ustctl_set_exclusion(int sock, struct lttng_ust_event_exclusion *exclusion, |
423 | struct lttng_ust_object_data *obj_data) | |
424 | { | |
425 | struct ustcomm_ust_msg lum; | |
426 | struct ustcomm_ust_reply lur; | |
427 | int ret; | |
428 | ||
429 | if (!obj_data) { | |
430 | return -EINVAL; | |
431 | } | |
432 | ||
433 | memset(&lum, 0, sizeof(lum)); | |
434 | lum.handle = obj_data->handle; | |
435 | lum.cmd = LTTNG_UST_EXCLUSION; | |
436 | lum.u.exclusion.count = exclusion->count; | |
437 | ||
438 | ret = ustcomm_send_app_msg(sock, &lum); | |
439 | if (ret) { | |
440 | return ret; | |
441 | } | |
442 | ||
1628366f | 443 | /* send var len exclusion names */ |
da57c034 JI |
444 | ret = ustcomm_send_unix_sock(sock, |
445 | exclusion->names, | |
446 | exclusion->count * LTTNG_UST_SYM_NAME_LEN); | |
447 | if (ret < 0) { | |
448 | return ret; | |
449 | } | |
450 | if (ret != exclusion->count * LTTNG_UST_SYM_NAME_LEN) { | |
451 | return -EINVAL; | |
452 | } | |
453 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
454 | } | |
455 | ||
57773204 | 456 | /* Enable event, channel and session ioctl */ |
61f02aea | 457 | int ustctl_enable(int sock, struct lttng_ust_object_data *object) |
57773204 MD |
458 | { |
459 | struct ustcomm_ust_msg lum; | |
460 | struct ustcomm_ust_reply lur; | |
461 | int ret; | |
462 | ||
9bfc503d MD |
463 | if (!object) |
464 | return -EINVAL; | |
465 | ||
57773204 MD |
466 | memset(&lum, 0, sizeof(lum)); |
467 | lum.handle = object->handle; | |
468 | lum.cmd = LTTNG_UST_ENABLE; | |
469 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
470 | if (ret) | |
471 | return ret; | |
472 | DBG("enabled handle %u", object->handle); | |
473 | return 0; | |
474 | } | |
475 | ||
476 | /* Disable event, channel and session ioctl */ | |
61f02aea | 477 | int ustctl_disable(int sock, struct lttng_ust_object_data *object) |
57773204 MD |
478 | { |
479 | struct ustcomm_ust_msg lum; | |
480 | struct ustcomm_ust_reply lur; | |
481 | int ret; | |
482 | ||
9bfc503d MD |
483 | if (!object) |
484 | return -EINVAL; | |
485 | ||
57773204 MD |
486 | memset(&lum, 0, sizeof(lum)); |
487 | lum.handle = object->handle; | |
488 | lum.cmd = LTTNG_UST_DISABLE; | |
489 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
490 | if (ret) | |
491 | return ret; | |
492 | DBG("disable handle %u", object->handle); | |
493 | return 0; | |
494 | } | |
495 | ||
4a6ca058 | 496 | int ustctl_start_session(int sock, int handle) |
57773204 | 497 | { |
61f02aea | 498 | struct lttng_ust_object_data obj; |
4a6ca058 MD |
499 | |
500 | obj.handle = handle; | |
501 | return ustctl_enable(sock, &obj); | |
57773204 MD |
502 | } |
503 | ||
4a6ca058 | 504 | int ustctl_stop_session(int sock, int handle) |
57773204 | 505 | { |
61f02aea | 506 | struct lttng_ust_object_data obj; |
4a6ca058 MD |
507 | |
508 | obj.handle = handle; | |
509 | return ustctl_disable(sock, &obj); | |
57773204 MD |
510 | } |
511 | ||
d8d2416d FD |
512 | int ustctl_create_event_notifier_group(int sock, int pipe_fd, |
513 | struct lttng_ust_object_data **_event_notifier_group_data) | |
514 | { | |
515 | struct lttng_ust_object_data *event_notifier_group_data; | |
516 | struct ustcomm_ust_msg lum; | |
517 | struct ustcomm_ust_reply lur; | |
518 | ssize_t len; | |
519 | int ret; | |
520 | ||
521 | if (!_event_notifier_group_data) | |
522 | return -EINVAL; | |
523 | ||
524 | event_notifier_group_data = zmalloc(sizeof(*event_notifier_group_data)); | |
525 | if (!event_notifier_group_data) | |
526 | return -ENOMEM; | |
527 | ||
528 | event_notifier_group_data->type = LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER_GROUP; | |
529 | ||
530 | memset(&lum, 0, sizeof(lum)); | |
531 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
532 | lum.cmd = LTTNG_UST_EVENT_NOTIFIER_GROUP_CREATE; | |
533 | ||
534 | ret = ustcomm_send_app_msg(sock, &lum); | |
535 | if (ret) | |
536 | goto error; | |
537 | ||
538 | /* Send event_notifier notification pipe. */ | |
539 | len = ustcomm_send_fds_unix_sock(sock, &pipe_fd, 1); | |
540 | if (len <= 0) { | |
541 | ret = len; | |
542 | goto error; | |
543 | } | |
544 | ||
545 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
546 | if (ret) | |
547 | goto error; | |
548 | ||
549 | event_notifier_group_data->handle = lur.ret_val; | |
550 | DBG("received event_notifier group handle %d", event_notifier_group_data->handle); | |
551 | ||
552 | *_event_notifier_group_data = event_notifier_group_data; | |
553 | ||
554 | ret = 0; | |
555 | goto end; | |
556 | error: | |
557 | free(event_notifier_group_data); | |
558 | ||
559 | end: | |
560 | return ret; | |
561 | } | |
562 | ||
563 | int ustctl_create_event_notifier(int sock, struct lttng_ust_event_notifier *event_notifier, | |
564 | struct lttng_ust_object_data *event_notifier_group, | |
565 | struct lttng_ust_object_data **_event_notifier_data) | |
566 | { | |
567 | struct ustcomm_ust_msg lum; | |
568 | struct ustcomm_ust_reply lur; | |
569 | struct lttng_ust_object_data *event_notifier_data; | |
8406222c | 570 | ssize_t len; |
d8d2416d FD |
571 | int ret; |
572 | ||
573 | if (!event_notifier_group || !_event_notifier_data) | |
574 | return -EINVAL; | |
575 | ||
576 | event_notifier_data = zmalloc(sizeof(*event_notifier_data)); | |
577 | if (!event_notifier_data) | |
578 | return -ENOMEM; | |
579 | ||
580 | event_notifier_data->type = LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER; | |
581 | ||
582 | memset(&lum, 0, sizeof(lum)); | |
583 | lum.handle = event_notifier_group->handle; | |
584 | lum.cmd = LTTNG_UST_EVENT_NOTIFIER_CREATE; | |
8406222c | 585 | lum.u.event_notifier.len = sizeof(*event_notifier); |
d8d2416d | 586 | |
41844673 | 587 | ret = ustcomm_send_app_msg(sock, &lum); |
d8d2416d FD |
588 | if (ret) { |
589 | free(event_notifier_data); | |
590 | return ret; | |
591 | } | |
8406222c MD |
592 | /* Send struct lttng_ust_event_notifier */ |
593 | len = ustcomm_send_unix_sock(sock, event_notifier, sizeof(*event_notifier)); | |
594 | if (len != sizeof(*event_notifier)) { | |
595 | if (len < 0) | |
596 | return len; | |
597 | else | |
598 | return -EIO; | |
599 | } | |
41844673 MD |
600 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); |
601 | if (ret) { | |
602 | free(event_notifier_data); | |
603 | return ret; | |
604 | } | |
d8d2416d FD |
605 | event_notifier_data->handle = lur.ret_val; |
606 | DBG("received event_notifier handle %u", event_notifier_data->handle); | |
607 | *_event_notifier_data = event_notifier_data; | |
608 | ||
609 | return ret; | |
610 | } | |
611 | ||
57773204 MD |
612 | int ustctl_tracepoint_list(int sock) |
613 | { | |
b115631f MD |
614 | struct ustcomm_ust_msg lum; |
615 | struct ustcomm_ust_reply lur; | |
616 | int ret, tp_list_handle; | |
617 | ||
618 | memset(&lum, 0, sizeof(lum)); | |
619 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
620 | lum.cmd = LTTNG_UST_TRACEPOINT_LIST; | |
621 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
622 | if (ret) | |
623 | return ret; | |
624 | tp_list_handle = lur.ret_val; | |
625 | DBG("received tracepoint list handle %u", tp_list_handle); | |
626 | return tp_list_handle; | |
627 | } | |
628 | ||
629 | int ustctl_tracepoint_list_get(int sock, int tp_list_handle, | |
cbef6901 | 630 | struct lttng_ust_tracepoint_iter *iter) |
b115631f MD |
631 | { |
632 | struct ustcomm_ust_msg lum; | |
633 | struct ustcomm_ust_reply lur; | |
634 | int ret; | |
635 | ||
9bfc503d MD |
636 | if (!iter) |
637 | return -EINVAL; | |
638 | ||
b115631f MD |
639 | memset(&lum, 0, sizeof(lum)); |
640 | lum.handle = tp_list_handle; | |
641 | lum.cmd = LTTNG_UST_TRACEPOINT_LIST_GET; | |
642 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
643 | if (ret) | |
644 | return ret; | |
882a56d7 | 645 | DBG("received tracepoint list entry name %s loglevel %d", |
cbef6901 | 646 | lur.u.tracepoint.name, |
882a56d7 | 647 | lur.u.tracepoint.loglevel); |
cbef6901 | 648 | memcpy(iter, &lur.u.tracepoint, sizeof(*iter)); |
b115631f | 649 | return 0; |
57773204 MD |
650 | } |
651 | ||
40003310 MD |
652 | int ustctl_tracepoint_field_list(int sock) |
653 | { | |
654 | struct ustcomm_ust_msg lum; | |
655 | struct ustcomm_ust_reply lur; | |
656 | int ret, tp_field_list_handle; | |
657 | ||
658 | memset(&lum, 0, sizeof(lum)); | |
659 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
660 | lum.cmd = LTTNG_UST_TRACEPOINT_FIELD_LIST; | |
661 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
662 | if (ret) | |
663 | return ret; | |
664 | tp_field_list_handle = lur.ret_val; | |
665 | DBG("received tracepoint field list handle %u", tp_field_list_handle); | |
666 | return tp_field_list_handle; | |
667 | } | |
668 | ||
669 | int ustctl_tracepoint_field_list_get(int sock, int tp_field_list_handle, | |
670 | struct lttng_ust_field_iter *iter) | |
671 | { | |
672 | struct ustcomm_ust_msg lum; | |
673 | struct ustcomm_ust_reply lur; | |
674 | int ret; | |
675 | ssize_t len; | |
676 | ||
677 | if (!iter) | |
678 | return -EINVAL; | |
679 | ||
680 | memset(&lum, 0, sizeof(lum)); | |
681 | lum.handle = tp_field_list_handle; | |
682 | lum.cmd = LTTNG_UST_TRACEPOINT_FIELD_LIST_GET; | |
683 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
684 | if (ret) | |
685 | return ret; | |
686 | len = ustcomm_recv_unix_sock(sock, iter, sizeof(*iter)); | |
687 | if (len != sizeof(*iter)) { | |
688 | return -EINVAL; | |
689 | } | |
690 | DBG("received tracepoint field list entry event_name %s event_loglevel %d field_name %s field_type %d", | |
691 | iter->event_name, | |
692 | iter->loglevel, | |
693 | iter->field_name, | |
694 | iter->type); | |
695 | return 0; | |
696 | } | |
697 | ||
57773204 MD |
698 | int ustctl_tracer_version(int sock, struct lttng_ust_tracer_version *v) |
699 | { | |
700 | struct ustcomm_ust_msg lum; | |
701 | struct ustcomm_ust_reply lur; | |
702 | int ret; | |
703 | ||
9bfc503d MD |
704 | if (!v) |
705 | return -EINVAL; | |
706 | ||
57773204 MD |
707 | memset(&lum, 0, sizeof(lum)); |
708 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
709 | lum.cmd = LTTNG_UST_TRACER_VERSION; | |
710 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
711 | if (ret) | |
712 | return ret; | |
713 | memcpy(v, &lur.u.version, sizeof(*v)); | |
714 | DBG("received tracer version"); | |
715 | return 0; | |
716 | } | |
717 | ||
718 | int ustctl_wait_quiescent(int sock) | |
719 | { | |
720 | struct ustcomm_ust_msg lum; | |
721 | struct ustcomm_ust_reply lur; | |
722 | int ret; | |
723 | ||
724 | memset(&lum, 0, sizeof(lum)); | |
725 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
726 | lum.cmd = LTTNG_UST_WAIT_QUIESCENT; | |
727 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
728 | if (ret) | |
729 | return ret; | |
730 | DBG("waited for quiescent state"); | |
731 | return 0; | |
732 | } | |
733 | ||
734 | int ustctl_calibrate(int sock, struct lttng_ust_calibrate *calibrate) | |
735 | { | |
9bfc503d MD |
736 | if (!calibrate) |
737 | return -EINVAL; | |
738 | ||
57773204 MD |
739 | return -ENOSYS; |
740 | } | |
741 | ||
f1fffc57 MD |
742 | int ustctl_sock_flush_buffer(int sock, struct lttng_ust_object_data *object) |
743 | { | |
744 | struct ustcomm_ust_msg lum; | |
745 | struct ustcomm_ust_reply lur; | |
746 | int ret; | |
747 | ||
9bfc503d MD |
748 | if (!object) |
749 | return -EINVAL; | |
750 | ||
f1fffc57 MD |
751 | memset(&lum, 0, sizeof(lum)); |
752 | lum.handle = object->handle; | |
753 | lum.cmd = LTTNG_UST_FLUSH_BUFFER; | |
754 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
755 | if (ret) | |
756 | return ret; | |
757 | DBG("flushed buffer handle %u", object->handle); | |
758 | return 0; | |
759 | } | |
760 | ||
74d81a6c MD |
761 | static |
762 | int ustctl_send_channel(int sock, | |
763 | enum lttng_ust_chan_type type, | |
764 | void *data, | |
765 | uint64_t size, | |
ff0f5728 | 766 | int wakeup_fd, |
74d81a6c MD |
767 | int send_fd_only) |
768 | { | |
769 | ssize_t len; | |
770 | ||
771 | if (!send_fd_only) { | |
772 | /* Send mmap size */ | |
773 | len = ustcomm_send_unix_sock(sock, &size, sizeof(size)); | |
774 | if (len != sizeof(size)) { | |
775 | if (len < 0) | |
776 | return len; | |
777 | else | |
778 | return -EIO; | |
779 | } | |
780 | ||
781 | /* Send channel type */ | |
782 | len = ustcomm_send_unix_sock(sock, &type, sizeof(type)); | |
783 | if (len != sizeof(type)) { | |
784 | if (len < 0) | |
785 | return len; | |
786 | else | |
787 | return -EIO; | |
788 | } | |
789 | } | |
790 | ||
791 | /* Send channel data */ | |
792 | len = ustcomm_send_unix_sock(sock, data, size); | |
793 | if (len != size) { | |
794 | if (len < 0) | |
795 | return len; | |
796 | else | |
797 | return -EIO; | |
798 | } | |
57773204 | 799 | |
ff0f5728 MD |
800 | /* Send wakeup fd */ |
801 | len = ustcomm_send_fds_unix_sock(sock, &wakeup_fd, 1); | |
802 | if (len <= 0) { | |
803 | if (len < 0) | |
804 | return len; | |
805 | else | |
806 | return -EIO; | |
807 | } | |
74d81a6c MD |
808 | return 0; |
809 | } | |
810 | ||
811 | static | |
812 | int ustctl_send_stream(int sock, | |
813 | uint32_t stream_nr, | |
814 | uint64_t memory_map_size, | |
815 | int shm_fd, int wakeup_fd, | |
816 | int send_fd_only) | |
57773204 | 817 | { |
74d81a6c MD |
818 | ssize_t len; |
819 | int fds[2]; | |
820 | ||
821 | if (!send_fd_only) { | |
822 | if (shm_fd < 0) { | |
823 | /* finish iteration */ | |
824 | uint64_t v = -1; | |
825 | ||
826 | len = ustcomm_send_unix_sock(sock, &v, sizeof(v)); | |
827 | if (len != sizeof(v)) { | |
828 | if (len < 0) | |
829 | return len; | |
830 | else | |
831 | return -EIO; | |
832 | } | |
833 | return 0; | |
834 | } | |
835 | ||
836 | /* Send mmap size */ | |
837 | len = ustcomm_send_unix_sock(sock, &memory_map_size, | |
838 | sizeof(memory_map_size)); | |
839 | if (len != sizeof(memory_map_size)) { | |
840 | if (len < 0) | |
841 | return len; | |
842 | else | |
843 | return -EIO; | |
844 | } | |
845 | ||
846 | /* Send stream nr */ | |
847 | len = ustcomm_send_unix_sock(sock, &stream_nr, | |
848 | sizeof(stream_nr)); | |
849 | if (len != sizeof(stream_nr)) { | |
850 | if (len < 0) | |
851 | return len; | |
852 | else | |
853 | return -EIO; | |
854 | } | |
855 | } | |
856 | ||
857 | /* Send shm fd and wakeup fd */ | |
858 | fds[0] = shm_fd; | |
859 | fds[1] = wakeup_fd; | |
860 | len = ustcomm_send_fds_unix_sock(sock, fds, 2); | |
861 | if (len <= 0) { | |
862 | if (len < 0) | |
863 | return len; | |
864 | else | |
865 | return -EIO; | |
866 | } | |
867 | return 0; | |
868 | } | |
869 | ||
870 | int ustctl_recv_channel_from_consumer(int sock, | |
871 | struct lttng_ust_object_data **_channel_data) | |
872 | { | |
873 | struct lttng_ust_object_data *channel_data; | |
874 | ssize_t len; | |
ff0f5728 | 875 | int wakeup_fd; |
7a784989 | 876 | int ret; |
57773204 | 877 | |
74d81a6c MD |
878 | channel_data = zmalloc(sizeof(*channel_data)); |
879 | if (!channel_data) { | |
880 | ret = -ENOMEM; | |
881 | goto error_alloc; | |
882 | } | |
883 | channel_data->type = LTTNG_UST_OBJECT_TYPE_CHANNEL; | |
12f3dabc | 884 | channel_data->handle = -1; |
74d81a6c MD |
885 | |
886 | /* recv mmap size */ | |
887 | len = ustcomm_recv_unix_sock(sock, &channel_data->size, | |
888 | sizeof(channel_data->size)); | |
889 | if (len != sizeof(channel_data->size)) { | |
890 | if (len < 0) | |
891 | ret = len; | |
892 | else | |
893 | ret = -EINVAL; | |
894 | goto error; | |
895 | } | |
9bfc503d | 896 | |
74d81a6c MD |
897 | /* recv channel type */ |
898 | len = ustcomm_recv_unix_sock(sock, &channel_data->u.channel.type, | |
899 | sizeof(channel_data->u.channel.type)); | |
900 | if (len != sizeof(channel_data->u.channel.type)) { | |
901 | if (len < 0) | |
902 | ret = len; | |
903 | else | |
904 | ret = -EINVAL; | |
905 | goto error; | |
906 | } | |
907 | ||
908 | /* recv channel data */ | |
909 | channel_data->u.channel.data = zmalloc(channel_data->size); | |
910 | if (!channel_data->u.channel.data) { | |
911 | ret = -ENOMEM; | |
912 | goto error; | |
913 | } | |
914 | len = ustcomm_recv_unix_sock(sock, channel_data->u.channel.data, | |
915 | channel_data->size); | |
916 | if (len != channel_data->size) { | |
917 | if (len < 0) | |
918 | ret = len; | |
919 | else | |
920 | ret = -EINVAL; | |
921 | goto error_recv_data; | |
922 | } | |
ff0f5728 MD |
923 | /* recv wakeup fd */ |
924 | len = ustcomm_recv_fds_unix_sock(sock, &wakeup_fd, 1); | |
925 | if (len <= 0) { | |
926 | if (len < 0) { | |
927 | ret = len; | |
928 | goto error_recv_data; | |
929 | } else { | |
930 | ret = -EIO; | |
931 | goto error_recv_data; | |
932 | } | |
933 | } | |
934 | channel_data->u.channel.wakeup_fd = wakeup_fd; | |
74d81a6c MD |
935 | *_channel_data = channel_data; |
936 | return 0; | |
937 | ||
938 | error_recv_data: | |
939 | free(channel_data->u.channel.data); | |
940 | error: | |
941 | free(channel_data); | |
942 | error_alloc: | |
943 | return ret; | |
944 | } | |
945 | ||
946 | int ustctl_recv_stream_from_consumer(int sock, | |
947 | struct lttng_ust_object_data **_stream_data) | |
948 | { | |
949 | struct lttng_ust_object_data *stream_data; | |
950 | ssize_t len; | |
951 | int ret; | |
952 | int fds[2]; | |
953 | ||
954 | stream_data = zmalloc(sizeof(*stream_data)); | |
955 | if (!stream_data) { | |
956 | ret = -ENOMEM; | |
957 | goto error_alloc; | |
57773204 | 958 | } |
74d81a6c MD |
959 | |
960 | stream_data->type = LTTNG_UST_OBJECT_TYPE_STREAM; | |
961 | stream_data->handle = -1; | |
962 | ||
963 | /* recv mmap size */ | |
964 | len = ustcomm_recv_unix_sock(sock, &stream_data->size, | |
965 | sizeof(stream_data->size)); | |
966 | if (len != sizeof(stream_data->size)) { | |
967 | if (len < 0) | |
968 | ret = len; | |
969 | else | |
970 | ret = -EINVAL; | |
971 | goto error; | |
972 | } | |
973 | if (stream_data->size == -1) { | |
974 | ret = -LTTNG_UST_ERR_NOENT; | |
975 | goto error; | |
976 | } | |
977 | ||
978 | /* recv stream nr */ | |
979 | len = ustcomm_recv_unix_sock(sock, &stream_data->u.stream.stream_nr, | |
980 | sizeof(stream_data->u.stream.stream_nr)); | |
981 | if (len != sizeof(stream_data->u.stream.stream_nr)) { | |
982 | if (len < 0) | |
983 | ret = len; | |
984 | else | |
985 | ret = -EINVAL; | |
986 | goto error; | |
987 | } | |
988 | ||
989 | /* recv shm fd and wakeup fd */ | |
990 | len = ustcomm_recv_fds_unix_sock(sock, fds, 2); | |
991 | if (len <= 0) { | |
992 | if (len < 0) { | |
993 | ret = len; | |
994 | goto error; | |
995 | } else { | |
996 | ret = -EIO; | |
997 | goto error; | |
0bfe09ec | 998 | } |
0bfe09ec | 999 | } |
74d81a6c MD |
1000 | stream_data->u.stream.shm_fd = fds[0]; |
1001 | stream_data->u.stream.wakeup_fd = fds[1]; | |
1002 | *_stream_data = stream_data; | |
1003 | return 0; | |
0bfe09ec | 1004 | |
74d81a6c MD |
1005 | error: |
1006 | free(stream_data); | |
1007 | error_alloc: | |
1008 | return ret; | |
1009 | } | |
1010 | ||
1011 | int ustctl_send_channel_to_ust(int sock, int session_handle, | |
1012 | struct lttng_ust_object_data *channel_data) | |
1013 | { | |
1014 | struct ustcomm_ust_msg lum; | |
1015 | struct ustcomm_ust_reply lur; | |
1016 | int ret; | |
1017 | ||
1018 | if (!channel_data) | |
1019 | return -EINVAL; | |
1020 | ||
1021 | memset(&lum, 0, sizeof(lum)); | |
1022 | lum.handle = session_handle; | |
1023 | lum.cmd = LTTNG_UST_CHANNEL; | |
1024 | lum.u.channel.len = channel_data->size; | |
1025 | lum.u.channel.type = channel_data->u.channel.type; | |
1026 | ret = ustcomm_send_app_msg(sock, &lum); | |
1027 | if (ret) | |
1028 | return ret; | |
1029 | ||
1030 | ret = ustctl_send_channel(sock, | |
1031 | channel_data->u.channel.type, | |
1032 | channel_data->u.channel.data, | |
1033 | channel_data->size, | |
ff0f5728 | 1034 | channel_data->u.channel.wakeup_fd, |
74d81a6c MD |
1035 | 1); |
1036 | if (ret) | |
1037 | return ret; | |
1038 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1039 | if (!ret) { | |
7f2348b8 | 1040 | channel_data->handle = lur.ret_val; |
57773204 | 1041 | } |
74d81a6c MD |
1042 | return ret; |
1043 | } | |
1044 | ||
1045 | int ustctl_send_stream_to_ust(int sock, | |
1046 | struct lttng_ust_object_data *channel_data, | |
1047 | struct lttng_ust_object_data *stream_data) | |
1048 | { | |
1049 | struct ustcomm_ust_msg lum; | |
1050 | struct ustcomm_ust_reply lur; | |
1051 | int ret; | |
1052 | ||
1053 | memset(&lum, 0, sizeof(lum)); | |
1054 | lum.handle = channel_data->handle; | |
1055 | lum.cmd = LTTNG_UST_STREAM; | |
1056 | lum.u.stream.len = stream_data->size; | |
1057 | lum.u.stream.stream_nr = stream_data->u.stream.stream_nr; | |
1058 | ret = ustcomm_send_app_msg(sock, &lum); | |
1059 | if (ret) | |
1060 | return ret; | |
1061 | ||
1062 | assert(stream_data); | |
1063 | assert(stream_data->type == LTTNG_UST_OBJECT_TYPE_STREAM); | |
1064 | ||
1065 | ret = ustctl_send_stream(sock, | |
1066 | stream_data->u.stream.stream_nr, | |
1067 | stream_data->size, | |
1068 | stream_data->u.stream.shm_fd, | |
1069 | stream_data->u.stream.wakeup_fd, 1); | |
1070 | if (ret) | |
1071 | return ret; | |
1072 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1073 | } | |
1074 | ||
12f3dabc MD |
1075 | int ustctl_duplicate_ust_object_data(struct lttng_ust_object_data **dest, |
1076 | struct lttng_ust_object_data *src) | |
1077 | { | |
1078 | struct lttng_ust_object_data *obj; | |
1079 | int ret; | |
1080 | ||
1081 | if (src->handle != -1) { | |
1082 | ret = -EINVAL; | |
1083 | goto error; | |
1084 | } | |
1085 | ||
1086 | obj = zmalloc(sizeof(*obj)); | |
1087 | if (!obj) { | |
1088 | ret = -ENOMEM; | |
1089 | goto error; | |
1090 | } | |
1091 | ||
1092 | obj->type = src->type; | |
1093 | obj->handle = src->handle; | |
1094 | obj->size = src->size; | |
1095 | ||
1096 | switch (obj->type) { | |
1097 | case LTTNG_UST_OBJECT_TYPE_CHANNEL: | |
1098 | { | |
1099 | obj->u.channel.type = src->u.channel.type; | |
1100 | if (src->u.channel.wakeup_fd >= 0) { | |
1101 | obj->u.channel.wakeup_fd = | |
1102 | dup(src->u.channel.wakeup_fd); | |
1103 | if (obj->u.channel.wakeup_fd < 0) { | |
1104 | ret = errno; | |
1105 | goto chan_error_wakeup_fd; | |
1106 | } | |
1107 | } else { | |
1108 | obj->u.channel.wakeup_fd = | |
1109 | src->u.channel.wakeup_fd; | |
1110 | } | |
1111 | obj->u.channel.data = zmalloc(obj->size); | |
1112 | if (!obj->u.channel.data) { | |
1113 | ret = -ENOMEM; | |
1114 | goto chan_error_alloc; | |
1115 | } | |
1116 | memcpy(obj->u.channel.data, src->u.channel.data, obj->size); | |
1117 | break; | |
1118 | ||
1119 | chan_error_alloc: | |
1120 | if (src->u.channel.wakeup_fd >= 0) { | |
1121 | int closeret; | |
1122 | ||
1123 | closeret = close(obj->u.channel.wakeup_fd); | |
1124 | if (closeret) { | |
1125 | PERROR("close"); | |
1126 | } | |
1127 | } | |
1128 | chan_error_wakeup_fd: | |
1129 | goto error_type; | |
1130 | ||
1131 | } | |
1132 | ||
1133 | case LTTNG_UST_OBJECT_TYPE_STREAM: | |
1134 | { | |
1135 | obj->u.stream.stream_nr = src->u.stream.stream_nr; | |
1136 | if (src->u.stream.wakeup_fd >= 0) { | |
1137 | obj->u.stream.wakeup_fd = | |
1138 | dup(src->u.stream.wakeup_fd); | |
1139 | if (obj->u.stream.wakeup_fd < 0) { | |
1140 | ret = errno; | |
1141 | goto stream_error_wakeup_fd; | |
1142 | } | |
1143 | } else { | |
1144 | obj->u.stream.wakeup_fd = | |
1145 | src->u.stream.wakeup_fd; | |
1146 | } | |
1147 | ||
1148 | if (src->u.stream.shm_fd >= 0) { | |
1149 | obj->u.stream.shm_fd = | |
1150 | dup(src->u.stream.shm_fd); | |
1151 | if (obj->u.stream.shm_fd < 0) { | |
1152 | ret = errno; | |
1153 | goto stream_error_shm_fd; | |
1154 | } | |
1155 | } else { | |
1156 | obj->u.stream.shm_fd = | |
1157 | src->u.stream.shm_fd; | |
1158 | } | |
1159 | break; | |
1160 | ||
1161 | stream_error_shm_fd: | |
1162 | if (src->u.stream.wakeup_fd >= 0) { | |
1163 | int closeret; | |
1164 | ||
1165 | closeret = close(obj->u.stream.wakeup_fd); | |
1166 | if (closeret) { | |
1167 | PERROR("close"); | |
1168 | } | |
1169 | } | |
1170 | stream_error_wakeup_fd: | |
1171 | goto error_type; | |
1172 | } | |
1173 | ||
ebabbf58 MD |
1174 | case LTTNG_UST_OBJECT_TYPE_COUNTER: |
1175 | { | |
1176 | obj->u.counter.data = zmalloc(obj->size); | |
1177 | if (!obj->u.counter.data) { | |
1178 | ret = -ENOMEM; | |
1179 | goto error_type; | |
1180 | } | |
1181 | memcpy(obj->u.counter.data, src->u.counter.data, obj->size); | |
1182 | break; | |
1183 | } | |
1184 | ||
1185 | case LTTNG_UST_OBJECT_TYPE_COUNTER_GLOBAL: | |
1186 | { | |
1187 | if (src->u.counter_global.shm_fd >= 0) { | |
1188 | obj->u.counter_global.shm_fd = | |
1189 | dup(src->u.counter_global.shm_fd); | |
1190 | if (obj->u.counter_global.shm_fd < 0) { | |
1191 | ret = errno; | |
1192 | goto error_type; | |
1193 | } | |
1194 | } | |
1195 | break; | |
1196 | } | |
1197 | ||
1198 | case LTTNG_UST_OBJECT_TYPE_COUNTER_CPU: | |
1199 | { | |
1200 | obj->u.counter_cpu.cpu_nr = src->u.counter_cpu.cpu_nr; | |
1201 | if (src->u.counter_cpu.shm_fd >= 0) { | |
1202 | obj->u.counter_cpu.shm_fd = | |
1203 | dup(src->u.counter_cpu.shm_fd); | |
1204 | if (obj->u.counter_cpu.shm_fd < 0) { | |
1205 | ret = errno; | |
1206 | goto error_type; | |
1207 | } | |
1208 | } | |
1209 | break; | |
1210 | } | |
1211 | ||
12f3dabc MD |
1212 | default: |
1213 | ret = -EINVAL; | |
1214 | goto error_type; | |
1215 | } | |
1216 | ||
1217 | *dest = obj; | |
1218 | return 0; | |
1219 | ||
1220 | error_type: | |
1221 | free(obj); | |
1222 | error: | |
1223 | return ret; | |
1224 | } | |
1225 | ||
74d81a6c MD |
1226 | |
1227 | /* Buffer operations */ | |
1228 | ||
5ea386c3 MD |
1229 | int ustctl_get_nr_stream_per_channel(void) |
1230 | { | |
1231 | return num_possible_cpus(); | |
1232 | } | |
1233 | ||
74d81a6c | 1234 | struct ustctl_consumer_channel * |
5ea386c3 MD |
1235 | ustctl_create_channel(struct ustctl_consumer_channel_attr *attr, |
1236 | const int *stream_fds, int nr_stream_fds) | |
74d81a6c MD |
1237 | { |
1238 | struct ustctl_consumer_channel *chan; | |
1239 | const char *transport_name; | |
1240 | struct lttng_transport *transport; | |
1241 | ||
1242 | switch (attr->type) { | |
1243 | case LTTNG_UST_CHAN_PER_CPU: | |
1244 | if (attr->output == LTTNG_UST_MMAP) { | |
34a91bdb MD |
1245 | if (attr->overwrite) { |
1246 | if (attr->read_timer_interval == 0) { | |
1247 | transport_name = "relay-overwrite-mmap"; | |
1248 | } else { | |
1249 | transport_name = "relay-overwrite-rt-mmap"; | |
1250 | } | |
1251 | } else { | |
1252 | if (attr->read_timer_interval == 0) { | |
1253 | transport_name = "relay-discard-mmap"; | |
1254 | } else { | |
1255 | transport_name = "relay-discard-rt-mmap"; | |
1256 | } | |
1257 | } | |
74d81a6c MD |
1258 | } else { |
1259 | return NULL; | |
1260 | } | |
c1fca457 | 1261 | break; |
74d81a6c MD |
1262 | case LTTNG_UST_CHAN_METADATA: |
1263 | if (attr->output == LTTNG_UST_MMAP) | |
1264 | transport_name = "relay-metadata-mmap"; | |
1265 | else | |
1266 | return NULL; | |
c1fca457 MD |
1267 | break; |
1268 | default: | |
74d81a6c | 1269 | transport_name = "<unknown>"; |
c1fca457 MD |
1270 | return NULL; |
1271 | } | |
74d81a6c MD |
1272 | |
1273 | transport = lttng_transport_find(transport_name); | |
1274 | if (!transport) { | |
1275 | DBG("LTTng transport %s not found\n", | |
32ce8569 | 1276 | transport_name); |
74d81a6c | 1277 | return NULL; |
7a784989 | 1278 | } |
74d81a6c MD |
1279 | |
1280 | chan = zmalloc(sizeof(*chan)); | |
1281 | if (!chan) | |
1282 | return NULL; | |
1283 | ||
1284 | chan->chan = transport->ops.channel_create(transport_name, NULL, | |
32ce8569 | 1285 | attr->subbuf_size, attr->num_subbuf, |
74d81a6c | 1286 | attr->switch_timer_interval, |
32ce8569 | 1287 | attr->read_timer_interval, |
a9ff648c | 1288 | attr->uuid, attr->chan_id, |
b2c5f61a MD |
1289 | stream_fds, nr_stream_fds, |
1290 | attr->blocking_timeout); | |
74d81a6c MD |
1291 | if (!chan->chan) { |
1292 | goto chan_error; | |
1293 | } | |
1294 | chan->chan->ops = &transport->ops; | |
1295 | memcpy(&chan->attr, attr, sizeof(chan->attr)); | |
cb7378b3 MD |
1296 | chan->wait_fd = ustctl_channel_get_wait_fd(chan); |
1297 | chan->wakeup_fd = ustctl_channel_get_wakeup_fd(chan); | |
74d81a6c MD |
1298 | return chan; |
1299 | ||
1300 | chan_error: | |
1301 | free(chan); | |
1302 | return NULL; | |
57773204 MD |
1303 | } |
1304 | ||
74d81a6c | 1305 | void ustctl_destroy_channel(struct ustctl_consumer_channel *chan) |
57773204 | 1306 | { |
b24e4e91 MD |
1307 | (void) ustctl_channel_close_wait_fd(chan); |
1308 | (void) ustctl_channel_close_wakeup_fd(chan); | |
74d81a6c MD |
1309 | chan->chan->ops->channel_destroy(chan->chan); |
1310 | free(chan); | |
1311 | } | |
1312 | ||
1313 | int ustctl_send_channel_to_sessiond(int sock, | |
1314 | struct ustctl_consumer_channel *channel) | |
1315 | { | |
1316 | struct shm_object_table *table; | |
57773204 | 1317 | |
74d81a6c MD |
1318 | table = channel->chan->handle->table; |
1319 | if (table->size <= 0) | |
9bfc503d | 1320 | return -EINVAL; |
74d81a6c MD |
1321 | return ustctl_send_channel(sock, |
1322 | channel->attr.type, | |
1323 | table->objects[0].memory_map, | |
1324 | table->objects[0].memory_map_size, | |
ff0f5728 | 1325 | channel->wakeup_fd, |
74d81a6c MD |
1326 | 0); |
1327 | } | |
9bfc503d | 1328 | |
74d81a6c MD |
1329 | int ustctl_send_stream_to_sessiond(int sock, |
1330 | struct ustctl_consumer_stream *stream) | |
1331 | { | |
1332 | if (!stream) | |
1333 | return ustctl_send_stream(sock, -1U, -1U, -1, -1, 0); | |
1334 | ||
1335 | return ustctl_send_stream(sock, | |
1336 | stream->cpu, | |
1337 | stream->memory_map_size, | |
1338 | stream->shm_fd, stream->wakeup_fd, | |
1339 | 0); | |
57773204 MD |
1340 | } |
1341 | ||
c9023c93 MD |
1342 | int ustctl_write_metadata_to_channel( |
1343 | struct ustctl_consumer_channel *channel, | |
1344 | const char *metadata_str, /* NOT null-terminated */ | |
1345 | size_t len) /* metadata length */ | |
1346 | { | |
1347 | struct lttng_ust_lib_ring_buffer_ctx ctx; | |
1348 | struct lttng_channel *chan = channel->chan; | |
1349 | const char *str = metadata_str; | |
1350 | int ret = 0, waitret; | |
1351 | size_t reserve_len, pos; | |
1352 | ||
1353 | for (pos = 0; pos < len; pos += reserve_len) { | |
1354 | reserve_len = min_t(size_t, | |
1355 | chan->ops->packet_avail_size(chan->chan, chan->handle), | |
1356 | len - pos); | |
1357 | lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL, reserve_len, | |
53569322 | 1358 | sizeof(char), -1, chan->handle, NULL); |
c9023c93 MD |
1359 | /* |
1360 | * We don't care about metadata buffer's records lost | |
1361 | * count, because we always retry here. Report error if | |
1362 | * we need to bail out after timeout or being | |
1363 | * interrupted. | |
1364 | */ | |
1365 | waitret = wait_cond_interruptible_timeout( | |
1366 | ({ | |
1367 | ret = chan->ops->event_reserve(&ctx, 0); | |
1368 | ret != -ENOBUFS || !ret; | |
1369 | }), | |
1370 | LTTNG_METADATA_TIMEOUT_MSEC); | |
1371 | if (waitret == -ETIMEDOUT || waitret == -EINTR || ret) { | |
1372 | DBG("LTTng: Failure to write metadata to buffers (%s)\n", | |
1373 | waitret == -EINTR ? "interrupted" : | |
1374 | (ret == -ENOBUFS ? "timeout" : "I/O error")); | |
1375 | if (waitret == -EINTR) | |
1376 | ret = waitret; | |
1377 | goto end; | |
1378 | } | |
1379 | chan->ops->event_write(&ctx, &str[pos], reserve_len); | |
1380 | chan->ops->event_commit(&ctx); | |
1381 | } | |
1382 | end: | |
1383 | return ret; | |
1384 | } | |
1385 | ||
3ef94b0e JD |
1386 | /* |
1387 | * Write at most one packet in the channel. | |
1388 | * Returns the number of bytes written on success, < 0 on error. | |
1389 | */ | |
1390 | ssize_t ustctl_write_one_packet_to_channel( | |
1391 | struct ustctl_consumer_channel *channel, | |
1392 | const char *metadata_str, /* NOT null-terminated */ | |
1393 | size_t len) /* metadata length */ | |
1394 | { | |
1395 | struct lttng_ust_lib_ring_buffer_ctx ctx; | |
1396 | struct lttng_channel *chan = channel->chan; | |
1397 | const char *str = metadata_str; | |
1398 | ssize_t reserve_len; | |
1399 | int ret; | |
1400 | ||
1401 | reserve_len = min_t(ssize_t, | |
1402 | chan->ops->packet_avail_size(chan->chan, chan->handle), | |
1403 | len); | |
1404 | lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL, reserve_len, | |
53569322 | 1405 | sizeof(char), -1, chan->handle, NULL); |
3ef94b0e JD |
1406 | ret = chan->ops->event_reserve(&ctx, 0); |
1407 | if (ret != 0) { | |
1408 | DBG("LTTng: event reservation failed"); | |
1409 | assert(ret < 0); | |
1410 | reserve_len = ret; | |
1411 | goto end; | |
1412 | } | |
1413 | chan->ops->event_write(&ctx, str, reserve_len); | |
1414 | chan->ops->event_commit(&ctx); | |
1415 | ||
1416 | end: | |
1417 | return reserve_len; | |
1418 | } | |
1419 | ||
ff0f5728 MD |
1420 | int ustctl_channel_close_wait_fd(struct ustctl_consumer_channel *consumer_chan) |
1421 | { | |
1422 | struct channel *chan; | |
cb7378b3 | 1423 | int ret; |
ff0f5728 MD |
1424 | |
1425 | chan = consumer_chan->chan->chan; | |
cb7378b3 | 1426 | ret = ring_buffer_channel_close_wait_fd(&chan->backend.config, |
ff0f5728 | 1427 | chan, chan->handle); |
cb7378b3 MD |
1428 | if (!ret) |
1429 | consumer_chan->wait_fd = -1; | |
1430 | return ret; | |
ff0f5728 MD |
1431 | } |
1432 | ||
1433 | int ustctl_channel_close_wakeup_fd(struct ustctl_consumer_channel *consumer_chan) | |
1434 | { | |
1435 | struct channel *chan; | |
cb7378b3 | 1436 | int ret; |
ff0f5728 MD |
1437 | |
1438 | chan = consumer_chan->chan->chan; | |
cb7378b3 | 1439 | ret = ring_buffer_channel_close_wakeup_fd(&chan->backend.config, |
ff0f5728 | 1440 | chan, chan->handle); |
cb7378b3 MD |
1441 | if (!ret) |
1442 | consumer_chan->wakeup_fd = -1; | |
1443 | return ret; | |
ff0f5728 MD |
1444 | } |
1445 | ||
74d81a6c | 1446 | int ustctl_stream_close_wait_fd(struct ustctl_consumer_stream *stream) |
5224b5c8 MD |
1447 | { |
1448 | struct channel *chan; | |
1449 | ||
74d81a6c | 1450 | chan = stream->chan->chan->chan; |
ff0f5728 | 1451 | return ring_buffer_stream_close_wait_fd(&chan->backend.config, |
74d81a6c | 1452 | chan, stream->handle, stream->cpu); |
5224b5c8 MD |
1453 | } |
1454 | ||
74d81a6c | 1455 | int ustctl_stream_close_wakeup_fd(struct ustctl_consumer_stream *stream) |
6e922b24 | 1456 | { |
66bdd22a | 1457 | struct channel *chan; |
74d81a6c MD |
1458 | |
1459 | chan = stream->chan->chan->chan; | |
ff0f5728 | 1460 | return ring_buffer_stream_close_wakeup_fd(&chan->backend.config, |
74d81a6c MD |
1461 | chan, stream->handle, stream->cpu); |
1462 | } | |
1463 | ||
1464 | struct ustctl_consumer_stream * | |
1465 | ustctl_create_stream(struct ustctl_consumer_channel *channel, | |
1466 | int cpu) | |
1467 | { | |
1468 | struct ustctl_consumer_stream *stream; | |
1469 | struct lttng_ust_shm_handle *handle; | |
1470 | struct channel *chan; | |
1471 | int shm_fd, wait_fd, wakeup_fd; | |
1472 | uint64_t memory_map_size; | |
4cfec15c | 1473 | struct lttng_ust_lib_ring_buffer *buf; |
6e922b24 MD |
1474 | int ret; |
1475 | ||
74d81a6c MD |
1476 | if (!channel) |
1477 | return NULL; | |
1478 | handle = channel->chan->handle; | |
9bfc503d MD |
1479 | if (!handle) |
1480 | return NULL; | |
1481 | ||
74d81a6c | 1482 | chan = channel->chan->chan; |
6e922b24 | 1483 | buf = channel_get_ring_buffer(&chan->backend.config, |
74d81a6c MD |
1484 | chan, cpu, handle, &shm_fd, &wait_fd, |
1485 | &wakeup_fd, &memory_map_size); | |
6e922b24 MD |
1486 | if (!buf) |
1487 | return NULL; | |
74d81a6c | 1488 | ret = lib_ring_buffer_open_read(buf, handle); |
6e922b24 MD |
1489 | if (ret) |
1490 | return NULL; | |
74d81a6c MD |
1491 | |
1492 | stream = zmalloc(sizeof(*stream)); | |
1493 | if (!stream) | |
1494 | goto alloc_error; | |
1495 | stream->handle = handle; | |
1496 | stream->buf = buf; | |
1497 | stream->chan = channel; | |
1498 | stream->shm_fd = shm_fd; | |
1499 | stream->wait_fd = wait_fd; | |
1500 | stream->wakeup_fd = wakeup_fd; | |
1501 | stream->memory_map_size = memory_map_size; | |
1502 | stream->cpu = cpu; | |
1503 | return stream; | |
1504 | ||
1505 | alloc_error: | |
1506 | return NULL; | |
1507 | } | |
1508 | ||
1509 | void ustctl_destroy_stream(struct ustctl_consumer_stream *stream) | |
1510 | { | |
1511 | struct lttng_ust_lib_ring_buffer *buf; | |
1512 | struct ustctl_consumer_channel *consumer_chan; | |
1513 | ||
1514 | assert(stream); | |
1515 | buf = stream->buf; | |
1516 | consumer_chan = stream->chan; | |
b24e4e91 MD |
1517 | (void) ustctl_stream_close_wait_fd(stream); |
1518 | (void) ustctl_stream_close_wakeup_fd(stream); | |
74d81a6c MD |
1519 | lib_ring_buffer_release_read(buf, consumer_chan->chan->handle); |
1520 | free(stream); | |
6e922b24 MD |
1521 | } |
1522 | ||
ff0f5728 MD |
1523 | int ustctl_channel_get_wait_fd(struct ustctl_consumer_channel *chan) |
1524 | { | |
1525 | if (!chan) | |
1526 | return -EINVAL; | |
1527 | return shm_get_wait_fd(chan->chan->handle, | |
1528 | &chan->chan->handle->chan._ref); | |
1529 | } | |
1530 | ||
1531 | int ustctl_channel_get_wakeup_fd(struct ustctl_consumer_channel *chan) | |
1532 | { | |
1533 | if (!chan) | |
1534 | return -EINVAL; | |
1535 | return shm_get_wakeup_fd(chan->chan->handle, | |
1536 | &chan->chan->handle->chan._ref); | |
1537 | } | |
1538 | ||
1539 | int ustctl_stream_get_wait_fd(struct ustctl_consumer_stream *stream) | |
6e922b24 | 1540 | { |
74d81a6c MD |
1541 | struct lttng_ust_lib_ring_buffer *buf; |
1542 | struct ustctl_consumer_channel *consumer_chan; | |
1543 | ||
1544 | if (!stream) | |
1545 | return -EINVAL; | |
1546 | buf = stream->buf; | |
1547 | consumer_chan = stream->chan; | |
1548 | return shm_get_wait_fd(consumer_chan->chan->handle, &buf->self._ref); | |
1549 | } | |
1550 | ||
ff0f5728 | 1551 | int ustctl_stream_get_wakeup_fd(struct ustctl_consumer_stream *stream) |
74d81a6c MD |
1552 | { |
1553 | struct lttng_ust_lib_ring_buffer *buf; | |
1554 | struct ustctl_consumer_channel *consumer_chan; | |
1555 | ||
1556 | if (!stream) | |
1557 | return -EINVAL; | |
1558 | buf = stream->buf; | |
1559 | consumer_chan = stream->chan; | |
1560 | return shm_get_wakeup_fd(consumer_chan->chan->handle, &buf->self._ref); | |
6e922b24 MD |
1561 | } |
1562 | ||
57773204 MD |
1563 | /* For mmap mode, readable without "get" operation */ |
1564 | ||
74d81a6c | 1565 | void *ustctl_get_mmap_base(struct ustctl_consumer_stream *stream) |
9095efe9 | 1566 | { |
74d81a6c MD |
1567 | struct lttng_ust_lib_ring_buffer *buf; |
1568 | struct ustctl_consumer_channel *consumer_chan; | |
1569 | ||
1570 | if (!stream) | |
9bfc503d | 1571 | return NULL; |
74d81a6c MD |
1572 | buf = stream->buf; |
1573 | consumer_chan = stream->chan; | |
1574 | return shmp(consumer_chan->chan->handle, buf->backend.memory_map); | |
9095efe9 MD |
1575 | } |
1576 | ||
57773204 | 1577 | /* returns the length to mmap. */ |
74d81a6c | 1578 | int ustctl_get_mmap_len(struct ustctl_consumer_stream *stream, |
57773204 MD |
1579 | unsigned long *len) |
1580 | { | |
74d81a6c | 1581 | struct ustctl_consumer_channel *consumer_chan; |
57773204 | 1582 | unsigned long mmap_buf_len; |
66bdd22a | 1583 | struct channel *chan; |
57773204 | 1584 | |
74d81a6c | 1585 | if (!stream) |
9bfc503d | 1586 | return -EINVAL; |
74d81a6c MD |
1587 | consumer_chan = stream->chan; |
1588 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1589 | if (chan->backend.config.output != RING_BUFFER_MMAP) |
1590 | return -EINVAL; | |
1591 | mmap_buf_len = chan->backend.buf_size; | |
1592 | if (chan->backend.extra_reader_sb) | |
1593 | mmap_buf_len += chan->backend.subbuf_size; | |
1594 | if (mmap_buf_len > INT_MAX) | |
1595 | return -EFBIG; | |
1596 | *len = mmap_buf_len; | |
1597 | return 0; | |
1598 | } | |
1599 | ||
1600 | /* returns the maximum size for sub-buffers. */ | |
74d81a6c | 1601 | int ustctl_get_max_subbuf_size(struct ustctl_consumer_stream *stream, |
57773204 MD |
1602 | unsigned long *len) |
1603 | { | |
74d81a6c | 1604 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1605 | struct channel *chan; |
57773204 | 1606 | |
74d81a6c | 1607 | if (!stream) |
9bfc503d | 1608 | return -EINVAL; |
74d81a6c MD |
1609 | consumer_chan = stream->chan; |
1610 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1611 | *len = chan->backend.subbuf_size; |
1612 | return 0; | |
1613 | } | |
1614 | ||
1615 | /* | |
1616 | * For mmap mode, operate on the current packet (between get/put or | |
1617 | * get_next/put_next). | |
1618 | */ | |
1619 | ||
1620 | /* returns the offset of the subbuffer belonging to the mmap reader. */ | |
74d81a6c MD |
1621 | int ustctl_get_mmap_read_offset(struct ustctl_consumer_stream *stream, |
1622 | unsigned long *off) | |
57773204 | 1623 | { |
66bdd22a | 1624 | struct channel *chan; |
57773204 | 1625 | unsigned long sb_bindex; |
74d81a6c MD |
1626 | struct lttng_ust_lib_ring_buffer *buf; |
1627 | struct ustctl_consumer_channel *consumer_chan; | |
34daae3e MD |
1628 | struct lttng_ust_lib_ring_buffer_backend_pages_shmp *barray_idx; |
1629 | struct lttng_ust_lib_ring_buffer_backend_pages *pages; | |
57773204 | 1630 | |
74d81a6c | 1631 | if (!stream) |
9bfc503d | 1632 | return -EINVAL; |
74d81a6c MD |
1633 | buf = stream->buf; |
1634 | consumer_chan = stream->chan; | |
1635 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1636 | if (chan->backend.config.output != RING_BUFFER_MMAP) |
1637 | return -EINVAL; | |
1638 | sb_bindex = subbuffer_id_get_index(&chan->backend.config, | |
32ce8569 | 1639 | buf->backend.buf_rsb.id); |
34daae3e MD |
1640 | barray_idx = shmp_index(consumer_chan->chan->handle, buf->backend.array, |
1641 | sb_bindex); | |
1642 | if (!barray_idx) | |
1643 | return -EINVAL; | |
1644 | pages = shmp(consumer_chan->chan->handle, barray_idx->shmp); | |
1645 | if (!pages) | |
1646 | return -EINVAL; | |
1647 | *off = pages->mmap_offset; | |
57773204 MD |
1648 | return 0; |
1649 | } | |
1650 | ||
1651 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
74d81a6c MD |
1652 | int ustctl_get_subbuf_size(struct ustctl_consumer_stream *stream, |
1653 | unsigned long *len) | |
57773204 | 1654 | { |
74d81a6c | 1655 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1656 | struct channel *chan; |
74d81a6c | 1657 | struct lttng_ust_lib_ring_buffer *buf; |
57773204 | 1658 | |
74d81a6c | 1659 | if (!stream) |
9bfc503d MD |
1660 | return -EINVAL; |
1661 | ||
74d81a6c MD |
1662 | buf = stream->buf; |
1663 | consumer_chan = stream->chan; | |
1664 | chan = consumer_chan->chan->chan; | |
57773204 | 1665 | *len = lib_ring_buffer_get_read_data_size(&chan->backend.config, buf, |
74d81a6c | 1666 | consumer_chan->chan->handle); |
57773204 MD |
1667 | return 0; |
1668 | } | |
1669 | ||
1670 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
74d81a6c MD |
1671 | int ustctl_get_padded_subbuf_size(struct ustctl_consumer_stream *stream, |
1672 | unsigned long *len) | |
57773204 | 1673 | { |
74d81a6c | 1674 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1675 | struct channel *chan; |
74d81a6c | 1676 | struct lttng_ust_lib_ring_buffer *buf; |
57773204 | 1677 | |
74d81a6c | 1678 | if (!stream) |
9bfc503d | 1679 | return -EINVAL; |
74d81a6c MD |
1680 | buf = stream->buf; |
1681 | consumer_chan = stream->chan; | |
1682 | chan = consumer_chan->chan->chan; | |
57773204 | 1683 | *len = lib_ring_buffer_get_read_data_size(&chan->backend.config, buf, |
74d81a6c | 1684 | consumer_chan->chan->handle); |
b72687b8 | 1685 | *len = LTTNG_UST_PAGE_ALIGN(*len); |
57773204 MD |
1686 | return 0; |
1687 | } | |
1688 | ||
1689 | /* Get exclusive read access to the next sub-buffer that can be read. */ | |
74d81a6c | 1690 | int ustctl_get_next_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1691 | { |
74d81a6c MD |
1692 | struct lttng_ust_lib_ring_buffer *buf; |
1693 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1694 | |
74d81a6c MD |
1695 | if (!stream) |
1696 | return -EINVAL; | |
1697 | buf = stream->buf; | |
1698 | consumer_chan = stream->chan; | |
1699 | return lib_ring_buffer_get_next_subbuf(buf, | |
1700 | consumer_chan->chan->handle); | |
57773204 MD |
1701 | } |
1702 | ||
1703 | ||
1704 | /* Release exclusive sub-buffer access, move consumer forward. */ | |
74d81a6c | 1705 | int ustctl_put_next_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1706 | { |
74d81a6c MD |
1707 | struct lttng_ust_lib_ring_buffer *buf; |
1708 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1709 | |
74d81a6c MD |
1710 | if (!stream) |
1711 | return -EINVAL; | |
1712 | buf = stream->buf; | |
1713 | consumer_chan = stream->chan; | |
1714 | lib_ring_buffer_put_next_subbuf(buf, consumer_chan->chan->handle); | |
57773204 MD |
1715 | return 0; |
1716 | } | |
1717 | ||
1718 | /* snapshot */ | |
1719 | ||
1720 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
74d81a6c | 1721 | int ustctl_snapshot(struct ustctl_consumer_stream *stream) |
57773204 | 1722 | { |
74d81a6c MD |
1723 | struct lttng_ust_lib_ring_buffer *buf; |
1724 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1725 | |
74d81a6c MD |
1726 | if (!stream) |
1727 | return -EINVAL; | |
1728 | buf = stream->buf; | |
1729 | consumer_chan = stream->chan; | |
57773204 | 1730 | return lib_ring_buffer_snapshot(buf, &buf->cons_snapshot, |
74d81a6c | 1731 | &buf->prod_snapshot, consumer_chan->chan->handle); |
57773204 MD |
1732 | } |
1733 | ||
f45930b7 JG |
1734 | /* |
1735 | * Get a snapshot of the current ring buffer producer and consumer positions | |
1736 | * even if the consumed and produced positions are contained within the same | |
1737 | * subbuffer. | |
1738 | */ | |
1739 | int ustctl_snapshot_sample_positions(struct ustctl_consumer_stream *stream) | |
1740 | { | |
1741 | struct lttng_ust_lib_ring_buffer *buf; | |
1742 | struct ustctl_consumer_channel *consumer_chan; | |
1743 | ||
1744 | if (!stream) | |
1745 | return -EINVAL; | |
1746 | buf = stream->buf; | |
1747 | consumer_chan = stream->chan; | |
1748 | return lib_ring_buffer_snapshot_sample_positions(buf, | |
1749 | &buf->cons_snapshot, &buf->prod_snapshot, | |
1750 | consumer_chan->chan->handle); | |
1751 | } | |
1752 | ||
57773204 | 1753 | /* Get the consumer position (iteration start) */ |
74d81a6c MD |
1754 | int ustctl_snapshot_get_consumed(struct ustctl_consumer_stream *stream, |
1755 | unsigned long *pos) | |
57773204 | 1756 | { |
74d81a6c | 1757 | struct lttng_ust_lib_ring_buffer *buf; |
9bfc503d | 1758 | |
74d81a6c MD |
1759 | if (!stream) |
1760 | return -EINVAL; | |
1761 | buf = stream->buf; | |
57773204 MD |
1762 | *pos = buf->cons_snapshot; |
1763 | return 0; | |
1764 | } | |
1765 | ||
1766 | /* Get the producer position (iteration end) */ | |
74d81a6c MD |
1767 | int ustctl_snapshot_get_produced(struct ustctl_consumer_stream *stream, |
1768 | unsigned long *pos) | |
57773204 | 1769 | { |
74d81a6c | 1770 | struct lttng_ust_lib_ring_buffer *buf; |
9bfc503d | 1771 | |
74d81a6c MD |
1772 | if (!stream) |
1773 | return -EINVAL; | |
1774 | buf = stream->buf; | |
57773204 MD |
1775 | *pos = buf->prod_snapshot; |
1776 | return 0; | |
1777 | } | |
1778 | ||
1779 | /* Get exclusive read access to the specified sub-buffer position */ | |
74d81a6c MD |
1780 | int ustctl_get_subbuf(struct ustctl_consumer_stream *stream, |
1781 | unsigned long *pos) | |
57773204 | 1782 | { |
74d81a6c MD |
1783 | struct lttng_ust_lib_ring_buffer *buf; |
1784 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1785 | |
74d81a6c MD |
1786 | if (!stream) |
1787 | return -EINVAL; | |
1788 | buf = stream->buf; | |
1789 | consumer_chan = stream->chan; | |
1790 | return lib_ring_buffer_get_subbuf(buf, *pos, | |
1791 | consumer_chan->chan->handle); | |
57773204 MD |
1792 | } |
1793 | ||
1794 | /* Release exclusive sub-buffer access */ | |
74d81a6c | 1795 | int ustctl_put_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1796 | { |
74d81a6c MD |
1797 | struct lttng_ust_lib_ring_buffer *buf; |
1798 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1799 | |
74d81a6c MD |
1800 | if (!stream) |
1801 | return -EINVAL; | |
1802 | buf = stream->buf; | |
1803 | consumer_chan = stream->chan; | |
1804 | lib_ring_buffer_put_subbuf(buf, consumer_chan->chan->handle); | |
57773204 MD |
1805 | return 0; |
1806 | } | |
1807 | ||
74d81a6c | 1808 | void ustctl_flush_buffer(struct ustctl_consumer_stream *stream, |
b52190f2 | 1809 | int producer_active) |
57773204 | 1810 | { |
74d81a6c MD |
1811 | struct lttng_ust_lib_ring_buffer *buf; |
1812 | struct ustctl_consumer_channel *consumer_chan; | |
1813 | ||
1814 | assert(stream); | |
1815 | buf = stream->buf; | |
1816 | consumer_chan = stream->chan; | |
b52190f2 MD |
1817 | lib_ring_buffer_switch_slow(buf, |
1818 | producer_active ? SWITCH_ACTIVE : SWITCH_FLUSH, | |
74d81a6c MD |
1819 | consumer_chan->chan->handle); |
1820 | } | |
1821 | ||
beca55a1 MD |
1822 | void ustctl_clear_buffer(struct ustctl_consumer_stream *stream) |
1823 | { | |
1824 | struct lttng_ust_lib_ring_buffer *buf; | |
1825 | struct ustctl_consumer_channel *consumer_chan; | |
1826 | ||
1827 | assert(stream); | |
1828 | buf = stream->buf; | |
1829 | consumer_chan = stream->chan; | |
1830 | lib_ring_buffer_switch_slow(buf, SWITCH_ACTIVE, | |
1831 | consumer_chan->chan->handle); | |
1832 | lib_ring_buffer_clear_reader(buf, consumer_chan->chan->handle); | |
1833 | } | |
1834 | ||
b2f3252a JD |
1835 | static |
1836 | struct lttng_ust_client_lib_ring_buffer_client_cb *get_client_cb( | |
1837 | struct lttng_ust_lib_ring_buffer *buf, | |
1838 | struct lttng_ust_shm_handle *handle) | |
1839 | { | |
1840 | struct channel *chan; | |
1841 | const struct lttng_ust_lib_ring_buffer_config *config; | |
1842 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1843 | ||
1844 | chan = shmp(handle, buf->backend.chan); | |
34daae3e MD |
1845 | if (!chan) |
1846 | return NULL; | |
b2f3252a JD |
1847 | config = &chan->backend.config; |
1848 | if (!config->cb_ptr) | |
1849 | return NULL; | |
1850 | client_cb = caa_container_of(config->cb_ptr, | |
1851 | struct lttng_ust_client_lib_ring_buffer_client_cb, | |
1852 | parent); | |
1853 | return client_cb; | |
1854 | } | |
1855 | ||
1856 | int ustctl_get_timestamp_begin(struct ustctl_consumer_stream *stream, | |
1857 | uint64_t *timestamp_begin) | |
1858 | { | |
1859 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1860 | struct lttng_ust_lib_ring_buffer *buf; |
1861 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1862 | |
1863 | if (!stream || !timestamp_begin) | |
1864 | return -EINVAL; | |
e1919a41 MD |
1865 | buf = stream->buf; |
1866 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1867 | client_cb = get_client_cb(buf, handle); |
1868 | if (!client_cb) | |
1869 | return -ENOSYS; | |
1870 | return client_cb->timestamp_begin(buf, handle, timestamp_begin); | |
1871 | } | |
1872 | ||
1873 | int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream, | |
1874 | uint64_t *timestamp_end) | |
1875 | { | |
1876 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1877 | struct lttng_ust_lib_ring_buffer *buf; |
1878 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1879 | |
1880 | if (!stream || !timestamp_end) | |
1881 | return -EINVAL; | |
e1919a41 MD |
1882 | buf = stream->buf; |
1883 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1884 | client_cb = get_client_cb(buf, handle); |
1885 | if (!client_cb) | |
1886 | return -ENOSYS; | |
1887 | return client_cb->timestamp_end(buf, handle, timestamp_end); | |
1888 | } | |
1889 | ||
1890 | int ustctl_get_events_discarded(struct ustctl_consumer_stream *stream, | |
1891 | uint64_t *events_discarded) | |
1892 | { | |
1893 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1894 | struct lttng_ust_lib_ring_buffer *buf; |
1895 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1896 | |
1897 | if (!stream || !events_discarded) | |
1898 | return -EINVAL; | |
e1919a41 MD |
1899 | buf = stream->buf; |
1900 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1901 | client_cb = get_client_cb(buf, handle); |
1902 | if (!client_cb) | |
1903 | return -ENOSYS; | |
1904 | return client_cb->events_discarded(buf, handle, events_discarded); | |
1905 | } | |
1906 | ||
1907 | int ustctl_get_content_size(struct ustctl_consumer_stream *stream, | |
1908 | uint64_t *content_size) | |
1909 | { | |
1910 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1911 | struct lttng_ust_lib_ring_buffer *buf; |
1912 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1913 | |
1914 | if (!stream || !content_size) | |
1915 | return -EINVAL; | |
e1919a41 MD |
1916 | buf = stream->buf; |
1917 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1918 | client_cb = get_client_cb(buf, handle); |
1919 | if (!client_cb) | |
1920 | return -ENOSYS; | |
1921 | return client_cb->content_size(buf, handle, content_size); | |
1922 | } | |
1923 | ||
1924 | int ustctl_get_packet_size(struct ustctl_consumer_stream *stream, | |
1925 | uint64_t *packet_size) | |
1926 | { | |
1927 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1928 | struct lttng_ust_lib_ring_buffer *buf; |
1929 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1930 | |
1931 | if (!stream || !packet_size) | |
1932 | return -EINVAL; | |
e1919a41 MD |
1933 | buf = stream->buf; |
1934 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1935 | client_cb = get_client_cb(buf, handle); |
1936 | if (!client_cb) | |
1937 | return -ENOSYS; | |
1938 | return client_cb->packet_size(buf, handle, packet_size); | |
1939 | } | |
1940 | ||
1941 | int ustctl_get_stream_id(struct ustctl_consumer_stream *stream, | |
1942 | uint64_t *stream_id) | |
1943 | { | |
1944 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1945 | struct lttng_ust_lib_ring_buffer *buf; |
1946 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1947 | |
1948 | if (!stream || !stream_id) | |
1949 | return -EINVAL; | |
e1919a41 MD |
1950 | buf = stream->buf; |
1951 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1952 | client_cb = get_client_cb(buf, handle); |
1953 | if (!client_cb) | |
1954 | return -ENOSYS; | |
1955 | return client_cb->stream_id(buf, handle, stream_id); | |
1956 | } | |
1957 | ||
fca361e8 JD |
1958 | int ustctl_get_current_timestamp(struct ustctl_consumer_stream *stream, |
1959 | uint64_t *ts) | |
1960 | { | |
1961 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1962 | struct lttng_ust_lib_ring_buffer *buf; |
1963 | struct lttng_ust_shm_handle *handle; | |
fca361e8 JD |
1964 | |
1965 | if (!stream || !ts) | |
1966 | return -EINVAL; | |
e1919a41 MD |
1967 | buf = stream->buf; |
1968 | handle = stream->chan->chan->handle; | |
fca361e8 JD |
1969 | client_cb = get_client_cb(buf, handle); |
1970 | if (!client_cb || !client_cb->current_timestamp) | |
1971 | return -ENOSYS; | |
1972 | return client_cb->current_timestamp(buf, handle, ts); | |
1973 | } | |
1974 | ||
1ff31389 JD |
1975 | int ustctl_get_sequence_number(struct ustctl_consumer_stream *stream, |
1976 | uint64_t *seq) | |
1977 | { | |
1978 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1979 | struct lttng_ust_lib_ring_buffer *buf; | |
1980 | struct lttng_ust_shm_handle *handle; | |
1981 | ||
1982 | if (!stream || !seq) | |
1983 | return -EINVAL; | |
1984 | buf = stream->buf; | |
1985 | handle = stream->chan->chan->handle; | |
1986 | client_cb = get_client_cb(buf, handle); | |
1987 | if (!client_cb || !client_cb->sequence_number) | |
1988 | return -ENOSYS; | |
1989 | return client_cb->sequence_number(buf, handle, seq); | |
1990 | } | |
1991 | ||
45a00b05 JD |
1992 | int ustctl_get_instance_id(struct ustctl_consumer_stream *stream, |
1993 | uint64_t *id) | |
1994 | { | |
1995 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1996 | struct lttng_ust_lib_ring_buffer *buf; | |
1997 | struct lttng_ust_shm_handle *handle; | |
1998 | ||
1999 | if (!stream || !id) | |
2000 | return -EINVAL; | |
2001 | buf = stream->buf; | |
2002 | handle = stream->chan->chan->handle; | |
2003 | client_cb = get_client_cb(buf, handle); | |
2004 | if (!client_cb) | |
2005 | return -ENOSYS; | |
2006 | return client_cb->instance_id(buf, handle, id); | |
2007 | } | |
2008 | ||
c62a3816 | 2009 | #ifdef LTTNG_UST_HAVE_PERF_EVENT |
57201bb3 MD |
2010 | |
2011 | int ustctl_has_perf_counters(void) | |
2012 | { | |
2013 | return 1; | |
2014 | } | |
2015 | ||
2016 | #else | |
2017 | ||
2018 | int ustctl_has_perf_counters(void) | |
2019 | { | |
2020 | return 0; | |
2021 | } | |
2022 | ||
2023 | #endif | |
2024 | ||
32ce8569 MD |
2025 | /* |
2026 | * Returns 0 on success, negative error value on error. | |
2027 | */ | |
2028 | int ustctl_recv_reg_msg(int sock, | |
2029 | enum ustctl_socket_type *type, | |
2030 | uint32_t *major, | |
2031 | uint32_t *minor, | |
2032 | uint32_t *pid, | |
2033 | uint32_t *ppid, | |
2034 | uint32_t *uid, | |
2035 | uint32_t *gid, | |
2036 | uint32_t *bits_per_long, | |
2037 | uint32_t *uint8_t_alignment, | |
2038 | uint32_t *uint16_t_alignment, | |
2039 | uint32_t *uint32_t_alignment, | |
2040 | uint32_t *uint64_t_alignment, | |
2041 | uint32_t *long_alignment, | |
2042 | int *byte_order, | |
2043 | char *name) | |
2044 | { | |
2045 | ssize_t len; | |
2046 | struct ustctl_reg_msg reg_msg; | |
2047 | ||
2048 | len = ustcomm_recv_unix_sock(sock, ®_msg, sizeof(reg_msg)); | |
2049 | if (len > 0 && len != sizeof(reg_msg)) | |
2050 | return -EIO; | |
2051 | if (len == 0) | |
2052 | return -EPIPE; | |
2053 | if (len < 0) | |
2054 | return len; | |
2055 | ||
2056 | if (reg_msg.magic == LTTNG_UST_COMM_MAGIC) { | |
2057 | *byte_order = BYTE_ORDER == BIG_ENDIAN ? | |
2058 | BIG_ENDIAN : LITTLE_ENDIAN; | |
2059 | } else if (reg_msg.magic == bswap_32(LTTNG_UST_COMM_MAGIC)) { | |
2060 | *byte_order = BYTE_ORDER == BIG_ENDIAN ? | |
2061 | LITTLE_ENDIAN : BIG_ENDIAN; | |
2062 | } else { | |
2063 | return -LTTNG_UST_ERR_INVAL_MAGIC; | |
2064 | } | |
2065 | switch (reg_msg.socket_type) { | |
2066 | case 0: *type = USTCTL_SOCKET_CMD; | |
2067 | break; | |
2068 | case 1: *type = USTCTL_SOCKET_NOTIFY; | |
2069 | break; | |
2070 | default: | |
2071 | return -LTTNG_UST_ERR_INVAL_SOCKET_TYPE; | |
2072 | } | |
2073 | *major = reg_msg.major; | |
2074 | *minor = reg_msg.minor; | |
2075 | *pid = reg_msg.pid; | |
2076 | *ppid = reg_msg.ppid; | |
2077 | *uid = reg_msg.uid; | |
2078 | *gid = reg_msg.gid; | |
2079 | *bits_per_long = reg_msg.bits_per_long; | |
2080 | *uint8_t_alignment = reg_msg.uint8_t_alignment; | |
2081 | *uint16_t_alignment = reg_msg.uint16_t_alignment; | |
2082 | *uint32_t_alignment = reg_msg.uint32_t_alignment; | |
2083 | *uint64_t_alignment = reg_msg.uint64_t_alignment; | |
2084 | *long_alignment = reg_msg.long_alignment; | |
2085 | memcpy(name, reg_msg.name, LTTNG_UST_ABI_PROCNAME_LEN); | |
6a359b8a MD |
2086 | if (reg_msg.major < LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE || |
2087 | reg_msg.major > LTTNG_UST_ABI_MAJOR_VERSION) { | |
32ce8569 MD |
2088 | return -LTTNG_UST_ERR_UNSUP_MAJOR; |
2089 | } | |
2090 | ||
2091 | return 0; | |
2092 | } | |
2093 | ||
2094 | int ustctl_recv_notify(int sock, enum ustctl_notify_cmd *notify_cmd) | |
2095 | { | |
2096 | struct ustcomm_notify_hdr header; | |
2097 | ssize_t len; | |
2098 | ||
2099 | len = ustcomm_recv_unix_sock(sock, &header, sizeof(header)); | |
2100 | if (len > 0 && len != sizeof(header)) | |
2101 | return -EIO; | |
2102 | if (len == 0) | |
2103 | return -EPIPE; | |
2104 | if (len < 0) | |
2105 | return len; | |
2106 | switch (header.notify_cmd) { | |
2107 | case 0: | |
2108 | *notify_cmd = USTCTL_NOTIFY_CMD_EVENT; | |
2109 | break; | |
2110 | case 1: | |
2111 | *notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL; | |
2112 | break; | |
c785c634 MD |
2113 | case 2: |
2114 | *notify_cmd = USTCTL_NOTIFY_CMD_ENUM; | |
2115 | break; | |
32ce8569 MD |
2116 | default: |
2117 | return -EINVAL; | |
2118 | } | |
2119 | return 0; | |
2120 | } | |
2121 | ||
2122 | /* | |
2123 | * Returns 0 on success, negative error value on error. | |
2124 | */ | |
2125 | int ustctl_recv_register_event(int sock, | |
2126 | int *session_objd, | |
2127 | int *channel_objd, | |
2128 | char *event_name, | |
2129 | int *loglevel, | |
2130 | char **signature, | |
2131 | size_t *nr_fields, | |
2132 | struct ustctl_field **fields, | |
2133 | char **model_emf_uri) | |
2134 | { | |
2135 | ssize_t len; | |
2136 | struct ustcomm_notify_event_msg msg; | |
2137 | size_t signature_len, fields_len, model_emf_uri_len; | |
2138 | char *a_sign = NULL, *a_model_emf_uri = NULL; | |
2139 | struct ustctl_field *a_fields = NULL; | |
2140 | ||
2141 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2142 | if (len > 0 && len != sizeof(msg)) | |
2143 | return -EIO; | |
2144 | if (len == 0) | |
2145 | return -EPIPE; | |
2146 | if (len < 0) | |
2147 | return len; | |
2148 | ||
2149 | *session_objd = msg.session_objd; | |
2150 | *channel_objd = msg.channel_objd; | |
2151 | strncpy(event_name, msg.event_name, LTTNG_UST_SYM_NAME_LEN); | |
2152 | event_name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
2153 | *loglevel = msg.loglevel; | |
2154 | signature_len = msg.signature_len; | |
2155 | fields_len = msg.fields_len; | |
2156 | ||
2157 | if (fields_len % sizeof(*a_fields) != 0) { | |
2158 | return -EINVAL; | |
2159 | } | |
2160 | ||
2161 | model_emf_uri_len = msg.model_emf_uri_len; | |
2162 | ||
2163 | /* recv signature. contains at least \0. */ | |
2164 | a_sign = zmalloc(signature_len); | |
2165 | if (!a_sign) | |
2166 | return -ENOMEM; | |
2167 | len = ustcomm_recv_unix_sock(sock, a_sign, signature_len); | |
2168 | if (len > 0 && len != signature_len) { | |
2169 | len = -EIO; | |
2170 | goto signature_error; | |
2171 | } | |
2172 | if (len == 0) { | |
2173 | len = -EPIPE; | |
2174 | goto signature_error; | |
2175 | } | |
2176 | if (len < 0) { | |
2177 | goto signature_error; | |
2178 | } | |
2179 | /* Enforce end of string */ | |
111198c2 | 2180 | a_sign[signature_len - 1] = '\0'; |
32ce8569 MD |
2181 | |
2182 | /* recv fields */ | |
2183 | if (fields_len) { | |
2184 | a_fields = zmalloc(fields_len); | |
2185 | if (!a_fields) { | |
2186 | len = -ENOMEM; | |
2187 | goto signature_error; | |
2188 | } | |
2189 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2190 | if (len > 0 && len != fields_len) { | |
2191 | len = -EIO; | |
2192 | goto fields_error; | |
2193 | } | |
2194 | if (len == 0) { | |
2195 | len = -EPIPE; | |
2196 | goto fields_error; | |
2197 | } | |
2198 | if (len < 0) { | |
2199 | goto fields_error; | |
2200 | } | |
2201 | } | |
2202 | ||
2203 | if (model_emf_uri_len) { | |
2204 | /* recv model_emf_uri_len */ | |
2205 | a_model_emf_uri = zmalloc(model_emf_uri_len); | |
2206 | if (!a_model_emf_uri) { | |
2207 | len = -ENOMEM; | |
2208 | goto fields_error; | |
2209 | } | |
2210 | len = ustcomm_recv_unix_sock(sock, a_model_emf_uri, | |
2211 | model_emf_uri_len); | |
2212 | if (len > 0 && len != model_emf_uri_len) { | |
2213 | len = -EIO; | |
2214 | goto model_error; | |
2215 | } | |
2216 | if (len == 0) { | |
2217 | len = -EPIPE; | |
2218 | goto model_error; | |
2219 | } | |
2220 | if (len < 0) { | |
2221 | goto model_error; | |
2222 | } | |
2223 | /* Enforce end of string */ | |
2224 | a_model_emf_uri[model_emf_uri_len - 1] = '\0'; | |
2225 | } | |
2226 | ||
2227 | *signature = a_sign; | |
2228 | *nr_fields = fields_len / sizeof(*a_fields); | |
2229 | *fields = a_fields; | |
2230 | *model_emf_uri = a_model_emf_uri; | |
2231 | ||
2232 | return 0; | |
2233 | ||
2234 | model_error: | |
2235 | free(a_model_emf_uri); | |
2236 | fields_error: | |
2237 | free(a_fields); | |
2238 | signature_error: | |
2239 | free(a_sign); | |
2240 | return len; | |
2241 | } | |
2242 | ||
2243 | /* | |
2244 | * Returns 0 on success, negative error value on error. | |
2245 | */ | |
2246 | int ustctl_reply_register_event(int sock, | |
2247 | uint32_t id, | |
2248 | int ret_code) | |
2249 | { | |
2250 | ssize_t len; | |
2251 | struct { | |
2252 | struct ustcomm_notify_hdr header; | |
2253 | struct ustcomm_notify_event_reply r; | |
2254 | } reply; | |
2255 | ||
2256 | memset(&reply, 0, sizeof(reply)); | |
2257 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_EVENT; | |
2258 | reply.r.ret_code = ret_code; | |
2259 | reply.r.event_id = id; | |
2260 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2261 | if (len > 0 && len != sizeof(reply)) | |
2262 | return -EIO; | |
2263 | if (len < 0) | |
2264 | return len; | |
2265 | return 0; | |
2266 | } | |
2267 | ||
c785c634 MD |
2268 | /* |
2269 | * Returns 0 on success, negative UST or system error value on error. | |
2270 | */ | |
2271 | int ustctl_recv_register_enum(int sock, | |
2272 | int *session_objd, | |
2273 | char *enum_name, | |
2274 | struct ustctl_enum_entry **entries, | |
2275 | size_t *nr_entries) | |
2276 | { | |
2277 | ssize_t len; | |
2278 | struct ustcomm_notify_enum_msg msg; | |
2279 | size_t entries_len; | |
2280 | struct ustctl_enum_entry *a_entries = NULL; | |
2281 | ||
2282 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2283 | if (len > 0 && len != sizeof(msg)) | |
2284 | return -EIO; | |
2285 | if (len == 0) | |
2286 | return -EPIPE; | |
2287 | if (len < 0) | |
2288 | return len; | |
2289 | ||
2290 | *session_objd = msg.session_objd; | |
2291 | strncpy(enum_name, msg.enum_name, LTTNG_UST_SYM_NAME_LEN); | |
2292 | enum_name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
2293 | entries_len = msg.entries_len; | |
2294 | ||
2295 | if (entries_len % sizeof(*a_entries) != 0) { | |
2296 | return -EINVAL; | |
2297 | } | |
2298 | ||
2299 | /* recv entries */ | |
2300 | if (entries_len) { | |
2301 | a_entries = zmalloc(entries_len); | |
2302 | if (!a_entries) | |
2303 | return -ENOMEM; | |
2304 | len = ustcomm_recv_unix_sock(sock, a_entries, entries_len); | |
2305 | if (len > 0 && len != entries_len) { | |
2306 | len = -EIO; | |
2307 | goto entries_error; | |
2308 | } | |
2309 | if (len == 0) { | |
2310 | len = -EPIPE; | |
2311 | goto entries_error; | |
2312 | } | |
2313 | if (len < 0) { | |
2314 | goto entries_error; | |
2315 | } | |
2316 | } | |
2317 | *nr_entries = entries_len / sizeof(*a_entries); | |
2318 | *entries = a_entries; | |
2319 | ||
2320 | return 0; | |
2321 | ||
2322 | entries_error: | |
2323 | free(a_entries); | |
2324 | return len; | |
2325 | } | |
2326 | ||
2327 | /* | |
2328 | * Returns 0 on success, negative error value on error. | |
2329 | */ | |
2330 | int ustctl_reply_register_enum(int sock, | |
2331 | uint64_t id, | |
2332 | int ret_code) | |
2333 | { | |
2334 | ssize_t len; | |
2335 | struct { | |
2336 | struct ustcomm_notify_hdr header; | |
2337 | struct ustcomm_notify_enum_reply r; | |
2338 | } reply; | |
2339 | ||
2340 | memset(&reply, 0, sizeof(reply)); | |
2341 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_ENUM; | |
2342 | reply.r.ret_code = ret_code; | |
2343 | reply.r.enum_id = id; | |
2344 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2345 | if (len > 0 && len != sizeof(reply)) | |
2346 | return -EIO; | |
2347 | if (len < 0) | |
2348 | return len; | |
2349 | return 0; | |
2350 | } | |
2351 | ||
32ce8569 MD |
2352 | /* |
2353 | * Returns 0 on success, negative UST or system error value on error. | |
2354 | */ | |
2355 | int ustctl_recv_register_channel(int sock, | |
2356 | int *session_objd, /* session descriptor (output) */ | |
2357 | int *channel_objd, /* channel descriptor (output) */ | |
2358 | size_t *nr_fields, | |
2359 | struct ustctl_field **fields) | |
2360 | { | |
2361 | ssize_t len; | |
2362 | struct ustcomm_notify_channel_msg msg; | |
2363 | size_t fields_len; | |
2364 | struct ustctl_field *a_fields; | |
2365 | ||
2366 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2367 | if (len > 0 && len != sizeof(msg)) | |
2368 | return -EIO; | |
2369 | if (len == 0) | |
2370 | return -EPIPE; | |
2371 | if (len < 0) | |
2372 | return len; | |
2373 | ||
2374 | *session_objd = msg.session_objd; | |
2375 | *channel_objd = msg.channel_objd; | |
2376 | fields_len = msg.ctx_fields_len; | |
2377 | ||
2378 | if (fields_len % sizeof(*a_fields) != 0) { | |
2379 | return -EINVAL; | |
2380 | } | |
2381 | ||
2382 | /* recv fields */ | |
2383 | if (fields_len) { | |
2384 | a_fields = zmalloc(fields_len); | |
2385 | if (!a_fields) { | |
2386 | len = -ENOMEM; | |
2387 | goto alloc_error; | |
2388 | } | |
2389 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2390 | if (len > 0 && len != fields_len) { | |
2391 | len = -EIO; | |
2392 | goto fields_error; | |
2393 | } | |
2394 | if (len == 0) { | |
2395 | len = -EPIPE; | |
2396 | goto fields_error; | |
2397 | } | |
2398 | if (len < 0) { | |
2399 | goto fields_error; | |
2400 | } | |
2401 | *fields = a_fields; | |
2402 | } else { | |
2403 | *fields = NULL; | |
2404 | } | |
2405 | *nr_fields = fields_len / sizeof(*a_fields); | |
2406 | return 0; | |
2407 | ||
2408 | fields_error: | |
2409 | free(a_fields); | |
2410 | alloc_error: | |
2411 | return len; | |
2412 | } | |
2413 | ||
2414 | /* | |
2415 | * Returns 0 on success, negative error value on error. | |
2416 | */ | |
2417 | int ustctl_reply_register_channel(int sock, | |
2418 | uint32_t chan_id, | |
2419 | enum ustctl_channel_header header_type, | |
2420 | int ret_code) | |
2421 | { | |
2422 | ssize_t len; | |
2423 | struct { | |
2424 | struct ustcomm_notify_hdr header; | |
2425 | struct ustcomm_notify_channel_reply r; | |
2426 | } reply; | |
2427 | ||
2428 | memset(&reply, 0, sizeof(reply)); | |
2429 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL; | |
2430 | reply.r.ret_code = ret_code; | |
2431 | reply.r.chan_id = chan_id; | |
2432 | switch (header_type) { | |
2433 | case USTCTL_CHANNEL_HEADER_COMPACT: | |
2434 | reply.r.header_type = 1; | |
2435 | break; | |
2436 | case USTCTL_CHANNEL_HEADER_LARGE: | |
2437 | reply.r.header_type = 2; | |
2438 | break; | |
2439 | default: | |
2440 | reply.r.header_type = 0; | |
2441 | break; | |
2442 | } | |
2443 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2444 | if (len > 0 && len != sizeof(reply)) | |
2445 | return -EIO; | |
2446 | if (len < 0) | |
2447 | return len; | |
2448 | return 0; | |
2449 | } | |
2450 | ||
f53329f3 JD |
2451 | /* Regenerate the statedump. */ |
2452 | int ustctl_regenerate_statedump(int sock, int handle) | |
2453 | { | |
2454 | struct ustcomm_ust_msg lum; | |
2455 | struct ustcomm_ust_reply lur; | |
2456 | int ret; | |
2457 | ||
2458 | memset(&lum, 0, sizeof(lum)); | |
2459 | lum.handle = handle; | |
2460 | lum.cmd = LTTNG_UST_SESSION_STATEDUMP; | |
2461 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
2462 | if (ret) | |
2463 | return ret; | |
2464 | DBG("Regenerated statedump for handle %u", handle); | |
2465 | return 0; | |
2466 | } | |
2467 | ||
ebabbf58 MD |
2468 | /* counter operations */ |
2469 | ||
2470 | int ustctl_get_nr_cpu_per_counter(void) | |
2471 | { | |
2472 | return lttng_counter_num_possible_cpus(); | |
2473 | } | |
2474 | ||
2475 | struct ustctl_daemon_counter * | |
2476 | ustctl_create_counter(size_t nr_dimensions, | |
2477 | const struct ustctl_counter_dimension *dimensions, | |
2478 | int64_t global_sum_step, | |
2479 | int global_counter_fd, | |
2480 | int nr_counter_cpu_fds, | |
2481 | const int *counter_cpu_fds, | |
2482 | enum ustctl_counter_bitness bitness, | |
2483 | enum ustctl_counter_arithmetic arithmetic, | |
2484 | uint32_t alloc_flags) | |
2485 | { | |
2486 | const char *transport_name; | |
2487 | struct ustctl_daemon_counter *counter; | |
2488 | struct lttng_counter_transport *transport; | |
2489 | struct lttng_counter_dimension ust_dim[LTTNG_COUNTER_DIMENSION_MAX]; | |
2490 | size_t i; | |
2491 | ||
2492 | if (nr_dimensions > LTTNG_COUNTER_DIMENSION_MAX) | |
2493 | return NULL; | |
2494 | /* Currently, only per-cpu allocation is supported. */ | |
2495 | switch (alloc_flags) { | |
2496 | case USTCTL_COUNTER_ALLOC_PER_CPU: | |
2497 | break; | |
2498 | ||
2499 | case USTCTL_COUNTER_ALLOC_PER_CPU | USTCTL_COUNTER_ALLOC_GLOBAL: | |
2500 | case USTCTL_COUNTER_ALLOC_GLOBAL: | |
2501 | default: | |
2502 | return NULL; | |
2503 | } | |
2504 | switch (bitness) { | |
2505 | case USTCTL_COUNTER_BITNESS_32: | |
2506 | switch (arithmetic) { | |
2507 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2508 | transport_name = "counter-per-cpu-32-modular"; | |
2509 | break; | |
2510 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2511 | transport_name = "counter-per-cpu-32-saturation"; | |
2512 | break; | |
2513 | default: | |
2514 | return NULL; | |
2515 | } | |
2516 | break; | |
2517 | case USTCTL_COUNTER_BITNESS_64: | |
2518 | switch (arithmetic) { | |
2519 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2520 | transport_name = "counter-per-cpu-64-modular"; | |
2521 | break; | |
2522 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2523 | transport_name = "counter-per-cpu-64-saturation"; | |
2524 | break; | |
2525 | default: | |
2526 | return NULL; | |
2527 | } | |
2528 | break; | |
2529 | default: | |
2530 | return NULL; | |
2531 | } | |
2532 | ||
2533 | transport = lttng_counter_transport_find(transport_name); | |
2534 | if (!transport) { | |
2535 | DBG("LTTng transport %s not found\n", | |
2536 | transport_name); | |
2537 | return NULL; | |
2538 | } | |
2539 | ||
2540 | counter = zmalloc(sizeof(*counter)); | |
2541 | if (!counter) | |
2542 | return NULL; | |
2543 | counter->attr = zmalloc(sizeof(*counter->attr)); | |
2544 | if (!counter->attr) | |
2545 | goto free_counter; | |
2546 | counter->attr->bitness = bitness; | |
2547 | counter->attr->arithmetic = arithmetic; | |
2548 | counter->attr->nr_dimensions = nr_dimensions; | |
2549 | counter->attr->global_sum_step = global_sum_step; | |
2550 | for (i = 0; i < nr_dimensions; i++) | |
2551 | counter->attr->dimensions[i] = dimensions[i]; | |
2552 | ||
2553 | for (i = 0; i < nr_dimensions; i++) { | |
2554 | ust_dim[i].size = dimensions[i].size; | |
2555 | ust_dim[i].underflow_index = dimensions[i].underflow_index; | |
2556 | ust_dim[i].overflow_index = dimensions[i].overflow_index; | |
2557 | ust_dim[i].has_underflow = dimensions[i].has_underflow; | |
2558 | ust_dim[i].has_overflow = dimensions[i].has_overflow; | |
2559 | } | |
2560 | counter->counter = transport->ops.counter_create(nr_dimensions, | |
2561 | ust_dim, global_sum_step, global_counter_fd, | |
2562 | nr_counter_cpu_fds, counter_cpu_fds, true); | |
2563 | if (!counter->counter) | |
2564 | goto free_attr; | |
2565 | counter->ops = &transport->ops; | |
2566 | return counter; | |
2567 | ||
2568 | free_attr: | |
2569 | free(counter->attr); | |
2570 | free_counter: | |
2571 | free(counter); | |
2572 | return NULL; | |
2573 | } | |
2574 | ||
2575 | int ustctl_create_counter_data(struct ustctl_daemon_counter *counter, | |
2576 | struct lttng_ust_object_data **_counter_data) | |
2577 | { | |
2578 | struct lttng_ust_object_data *counter_data; | |
dca92811 | 2579 | struct lttng_ust_counter_conf counter_conf = {0}; |
ebabbf58 MD |
2580 | size_t i; |
2581 | int ret; | |
2582 | ||
2583 | switch (counter->attr->arithmetic) { | |
2584 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2585 | counter_conf.arithmetic = LTTNG_UST_COUNTER_ARITHMETIC_MODULAR; | |
2586 | break; | |
2587 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2588 | counter_conf.arithmetic = LTTNG_UST_COUNTER_ARITHMETIC_SATURATION; | |
2589 | break; | |
2590 | default: | |
2591 | return -EINVAL; | |
2592 | } | |
2593 | switch (counter->attr->bitness) { | |
2594 | case USTCTL_COUNTER_BITNESS_32: | |
38980ed1 | 2595 | counter_conf.bitness = LTTNG_UST_COUNTER_BITNESS_32; |
ebabbf58 MD |
2596 | break; |
2597 | case USTCTL_COUNTER_BITNESS_64: | |
38980ed1 | 2598 | counter_conf.bitness = LTTNG_UST_COUNTER_BITNESS_64; |
ebabbf58 MD |
2599 | break; |
2600 | default: | |
2601 | return -EINVAL; | |
2602 | } | |
2603 | counter_conf.number_dimensions = counter->attr->nr_dimensions; | |
2604 | counter_conf.global_sum_step = counter->attr->global_sum_step; | |
2605 | for (i = 0; i < counter->attr->nr_dimensions; i++) { | |
2606 | counter_conf.dimensions[i].size = counter->attr->dimensions[i].size; | |
2607 | counter_conf.dimensions[i].underflow_index = counter->attr->dimensions[i].underflow_index; | |
2608 | counter_conf.dimensions[i].overflow_index = counter->attr->dimensions[i].overflow_index; | |
2609 | counter_conf.dimensions[i].has_underflow = counter->attr->dimensions[i].has_underflow; | |
2610 | counter_conf.dimensions[i].has_overflow = counter->attr->dimensions[i].has_overflow; | |
2611 | } | |
2612 | ||
2613 | counter_data = zmalloc(sizeof(*counter_data)); | |
2614 | if (!counter_data) { | |
2615 | ret = -ENOMEM; | |
2616 | goto error_alloc; | |
2617 | } | |
2618 | counter_data->type = LTTNG_UST_OBJECT_TYPE_COUNTER; | |
2619 | counter_data->handle = -1; | |
2620 | ||
2621 | counter_data->size = sizeof(counter_conf); | |
2622 | counter_data->u.counter.data = zmalloc(sizeof(counter_conf)); | |
2623 | if (!counter_data->u.counter.data) { | |
2624 | ret = -ENOMEM; | |
2625 | goto error_alloc_data; | |
2626 | } | |
2627 | ||
2628 | memcpy(counter_data->u.counter.data, &counter_conf, sizeof(counter_conf)); | |
2629 | *_counter_data = counter_data; | |
2630 | ||
2631 | return 0; | |
2632 | ||
2633 | error_alloc_data: | |
2634 | free(counter_data); | |
2635 | error_alloc: | |
2636 | return ret; | |
2637 | } | |
2638 | ||
2639 | int ustctl_create_counter_global_data(struct ustctl_daemon_counter *counter, | |
2640 | struct lttng_ust_object_data **_counter_global_data) | |
2641 | { | |
2642 | struct lttng_ust_object_data *counter_global_data; | |
2643 | int ret, fd; | |
2644 | size_t len; | |
2645 | ||
2646 | if (lttng_counter_get_global_shm(counter->counter, &fd, &len)) | |
2647 | return -EINVAL; | |
2648 | counter_global_data = zmalloc(sizeof(*counter_global_data)); | |
2649 | if (!counter_global_data) { | |
2650 | ret = -ENOMEM; | |
2651 | goto error_alloc; | |
2652 | } | |
2653 | counter_global_data->type = LTTNG_UST_OBJECT_TYPE_COUNTER_GLOBAL; | |
2654 | counter_global_data->handle = -1; | |
2655 | counter_global_data->size = len; | |
2656 | counter_global_data->u.counter_global.shm_fd = fd; | |
2657 | *_counter_global_data = counter_global_data; | |
2658 | return 0; | |
2659 | ||
2660 | error_alloc: | |
2661 | return ret; | |
2662 | } | |
2663 | ||
2664 | int ustctl_create_counter_cpu_data(struct ustctl_daemon_counter *counter, int cpu, | |
2665 | struct lttng_ust_object_data **_counter_cpu_data) | |
2666 | { | |
2667 | struct lttng_ust_object_data *counter_cpu_data; | |
2668 | int ret, fd; | |
2669 | size_t len; | |
2670 | ||
2671 | if (lttng_counter_get_cpu_shm(counter->counter, cpu, &fd, &len)) | |
2672 | return -EINVAL; | |
2673 | counter_cpu_data = zmalloc(sizeof(*counter_cpu_data)); | |
2674 | if (!counter_cpu_data) { | |
2675 | ret = -ENOMEM; | |
2676 | goto error_alloc; | |
2677 | } | |
2678 | counter_cpu_data->type = LTTNG_UST_OBJECT_TYPE_COUNTER_CPU; | |
2679 | counter_cpu_data->handle = -1; | |
2680 | counter_cpu_data->size = len; | |
2681 | counter_cpu_data->u.counter_cpu.shm_fd = fd; | |
2682 | counter_cpu_data->u.counter_cpu.cpu_nr = cpu; | |
2683 | *_counter_cpu_data = counter_cpu_data; | |
2684 | return 0; | |
2685 | ||
2686 | error_alloc: | |
2687 | return ret; | |
2688 | } | |
2689 | ||
2690 | void ustctl_destroy_counter(struct ustctl_daemon_counter *counter) | |
2691 | { | |
2692 | counter->ops->counter_destroy(counter->counter); | |
2693 | free(counter->attr); | |
2694 | free(counter); | |
2695 | } | |
2696 | ||
2697 | int ustctl_send_counter_data_to_ust(int sock, int parent_handle, | |
2698 | struct lttng_ust_object_data *counter_data) | |
2699 | { | |
2700 | struct ustcomm_ust_msg lum; | |
2701 | struct ustcomm_ust_reply lur; | |
2702 | int ret; | |
2703 | size_t size; | |
2704 | ssize_t len; | |
2705 | ||
2706 | if (!counter_data) | |
2707 | return -EINVAL; | |
2708 | ||
2709 | size = counter_data->size; | |
2710 | memset(&lum, 0, sizeof(lum)); | |
2711 | lum.handle = parent_handle; | |
2712 | lum.cmd = LTTNG_UST_COUNTER; | |
2713 | lum.u.counter.len = size; | |
2714 | ret = ustcomm_send_app_msg(sock, &lum); | |
2715 | if (ret) | |
2716 | return ret; | |
2717 | ||
2718 | /* Send counter data */ | |
2719 | len = ustcomm_send_unix_sock(sock, counter_data->u.counter.data, size); | |
2720 | if (len != size) { | |
2721 | if (len < 0) | |
2722 | return len; | |
2723 | else | |
2724 | return -EIO; | |
2725 | } | |
2726 | ||
2727 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2728 | if (!ret) { | |
2729 | counter_data->handle = lur.ret_val; | |
2730 | } | |
2731 | return ret; | |
2732 | } | |
2733 | ||
2734 | int ustctl_send_counter_global_data_to_ust(int sock, | |
2735 | struct lttng_ust_object_data *counter_data, | |
2736 | struct lttng_ust_object_data *counter_global_data) | |
2737 | { | |
2738 | struct ustcomm_ust_msg lum; | |
2739 | struct ustcomm_ust_reply lur; | |
2740 | int ret, shm_fd[1]; | |
2741 | size_t size; | |
2742 | ssize_t len; | |
2743 | ||
2744 | if (!counter_data || !counter_global_data) | |
2745 | return -EINVAL; | |
2746 | ||
2747 | size = counter_global_data->size; | |
2748 | memset(&lum, 0, sizeof(lum)); | |
2749 | lum.handle = counter_data->handle; /* parent handle */ | |
2750 | lum.cmd = LTTNG_UST_COUNTER_GLOBAL; | |
2751 | lum.u.counter_global.len = size; | |
2752 | ret = ustcomm_send_app_msg(sock, &lum); | |
2753 | if (ret) | |
2754 | return ret; | |
2755 | ||
2756 | shm_fd[0] = counter_global_data->u.counter_global.shm_fd; | |
2757 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
2758 | if (len <= 0) { | |
2759 | if (len < 0) | |
2760 | return len; | |
2761 | else | |
2762 | return -EIO; | |
2763 | } | |
2764 | ||
2765 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2766 | if (!ret) { | |
2767 | counter_global_data->handle = lur.ret_val; | |
2768 | } | |
2769 | return ret; | |
2770 | } | |
2771 | ||
2772 | int ustctl_send_counter_cpu_data_to_ust(int sock, | |
2773 | struct lttng_ust_object_data *counter_data, | |
2774 | struct lttng_ust_object_data *counter_cpu_data) | |
2775 | { | |
2776 | struct ustcomm_ust_msg lum; | |
2777 | struct ustcomm_ust_reply lur; | |
2778 | int ret, shm_fd[1]; | |
2779 | size_t size; | |
2780 | ssize_t len; | |
2781 | ||
2782 | if (!counter_data || !counter_cpu_data) | |
2783 | return -EINVAL; | |
2784 | ||
2785 | size = counter_cpu_data->size; | |
2786 | memset(&lum, 0, sizeof(lum)); | |
2787 | lum.handle = counter_data->handle; /* parent handle */ | |
2788 | lum.cmd = LTTNG_UST_COUNTER_CPU; | |
2789 | lum.u.counter_cpu.len = size; | |
2790 | lum.u.counter_cpu.cpu_nr = counter_cpu_data->u.counter_cpu.cpu_nr; | |
2791 | ret = ustcomm_send_app_msg(sock, &lum); | |
2792 | if (ret) | |
2793 | return ret; | |
2794 | ||
2795 | shm_fd[0] = counter_cpu_data->u.counter_global.shm_fd; | |
2796 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
2797 | if (len <= 0) { | |
2798 | if (len < 0) | |
2799 | return len; | |
2800 | else | |
2801 | return -EIO; | |
2802 | } | |
2803 | ||
2804 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2805 | if (!ret) { | |
2806 | counter_cpu_data->handle = lur.ret_val; | |
2807 | } | |
2808 | return ret; | |
2809 | } | |
2810 | ||
2811 | int ustctl_counter_read(struct ustctl_daemon_counter *counter, | |
2812 | const size_t *dimension_indexes, | |
2813 | int cpu, int64_t *value, | |
2814 | bool *overflow, bool *underflow) | |
2815 | { | |
2816 | return counter->ops->counter_read(counter->counter, dimension_indexes, cpu, | |
2817 | value, overflow, underflow); | |
2818 | } | |
2819 | ||
2820 | int ustctl_counter_aggregate(struct ustctl_daemon_counter *counter, | |
2821 | const size_t *dimension_indexes, | |
2822 | int64_t *value, | |
2823 | bool *overflow, bool *underflow) | |
2824 | { | |
2825 | return counter->ops->counter_aggregate(counter->counter, dimension_indexes, | |
2826 | value, overflow, underflow); | |
2827 | } | |
2828 | ||
2829 | int ustctl_counter_clear(struct ustctl_daemon_counter *counter, | |
2830 | const size_t *dimension_indexes) | |
2831 | { | |
2832 | return counter->ops->counter_clear(counter->counter, dimension_indexes); | |
2833 | } | |
2834 | ||
74d81a6c MD |
2835 | static __attribute__((constructor)) |
2836 | void ustctl_init(void) | |
2837 | { | |
2838 | init_usterr(); | |
6f626d28 | 2839 | lttng_ust_getenv_init(); /* Needs init_usterr() to be completed. */ |
f9364363 | 2840 | lttng_ust_clock_init(); |
74d81a6c MD |
2841 | lttng_ring_buffer_metadata_client_init(); |
2842 | lttng_ring_buffer_client_overwrite_init(); | |
34a91bdb | 2843 | lttng_ring_buffer_client_overwrite_rt_init(); |
74d81a6c | 2844 | lttng_ring_buffer_client_discard_init(); |
34a91bdb | 2845 | lttng_ring_buffer_client_discard_rt_init(); |
ebabbf58 MD |
2846 | lttng_counter_client_percpu_32_modular_init(); |
2847 | lttng_counter_client_percpu_64_modular_init(); | |
03d2d293 | 2848 | lib_ringbuffer_signal_init(); |
74d81a6c MD |
2849 | } |
2850 | ||
2851 | static __attribute__((destructor)) | |
2852 | void ustctl_exit(void) | |
2853 | { | |
34a91bdb | 2854 | lttng_ring_buffer_client_discard_rt_exit(); |
74d81a6c | 2855 | lttng_ring_buffer_client_discard_exit(); |
34a91bdb | 2856 | lttng_ring_buffer_client_overwrite_rt_exit(); |
74d81a6c MD |
2857 | lttng_ring_buffer_client_overwrite_exit(); |
2858 | lttng_ring_buffer_metadata_client_exit(); | |
ebabbf58 MD |
2859 | lttng_counter_client_percpu_32_modular_exit(); |
2860 | lttng_counter_client_percpu_64_modular_exit(); | |
57773204 | 2861 | } |