Commit | Line | Data |
---|---|---|
57773204 | 1 | /* |
c0c0989a | 2 | * SPDX-License-Identifier: GPL-2.0-only |
57773204 | 3 | * |
c0c0989a MJ |
4 | * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca> |
5 | * Copyright (C) 2011-2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
57773204 MD |
6 | */ |
7 | ||
fb31eb73 | 8 | #include <stdint.h> |
57773204 | 9 | #include <string.h> |
fb31eb73 | 10 | #include <sys/mman.h> |
4e79769f | 11 | #include <unistd.h> |
a834901f MD |
12 | #include <sys/types.h> |
13 | #include <sys/socket.h> | |
fb31eb73 | 14 | |
c62a3816 | 15 | #include <lttng/ust-config.h> |
4318ae1b MD |
16 | #include <lttng/ust-ctl.h> |
17 | #include <lttng/ust-abi.h> | |
3208818b | 18 | #include <lttng/ust-endian.h> |
bb7ad29d | 19 | |
44c72f10 | 20 | #include <usterr-signal-safe.h> |
b728d87e | 21 | #include <ust-comm.h> |
864a1eda | 22 | #include <ust-helper.h> |
cd61d9bf | 23 | #include "ust-compat.h" |
57773204 MD |
24 | |
25 | #include "../libringbuffer/backend.h" | |
26 | #include "../libringbuffer/frontend.h" | |
bb7ad29d | 27 | #include "../liblttng-ust/ust-events-internal.h" |
c9023c93 | 28 | #include "../liblttng-ust/wait.h" |
b2f3252a | 29 | #include "../liblttng-ust/lttng-rb-clients.h" |
f9364363 | 30 | #include "../liblttng-ust/clock.h" |
92ce256d | 31 | #include "../liblttng-ust/getenv.h" |
23d128de | 32 | #include "../liblttng-ust/lttng-tracer-core.h" |
c9023c93 | 33 | |
ebabbf58 MD |
34 | #include "../libcounter/shm.h" |
35 | #include "../libcounter/smp.h" | |
36 | #include "../libcounter/counter.h" | |
37 | ||
c9023c93 MD |
38 | /* |
39 | * Number of milliseconds to retry before failing metadata writes on | |
40 | * buffer full condition. (10 seconds) | |
41 | */ | |
42 | #define LTTNG_METADATA_TIMEOUT_MSEC 10000 | |
57773204 | 43 | |
74d81a6c MD |
44 | /* |
45 | * Channel representation within consumer. | |
46 | */ | |
47 | struct ustctl_consumer_channel { | |
48 | struct lttng_channel *chan; /* lttng channel buffers */ | |
6b120308 | 49 | |
74d81a6c MD |
50 | /* initial attributes */ |
51 | struct ustctl_consumer_channel_attr attr; | |
ff0f5728 MD |
52 | int wait_fd; /* monitor close() */ |
53 | int wakeup_fd; /* monitor close() */ | |
74d81a6c MD |
54 | }; |
55 | ||
56 | /* | |
57 | * Stream representation within consumer. | |
58 | */ | |
59 | struct ustctl_consumer_stream { | |
60 | struct lttng_ust_shm_handle *handle; /* shared-memory handle */ | |
61 | struct lttng_ust_lib_ring_buffer *buf; | |
62 | struct ustctl_consumer_channel *chan; | |
63 | int shm_fd, wait_fd, wakeup_fd; | |
64 | int cpu; | |
65 | uint64_t memory_map_size; | |
66 | }; | |
67 | ||
ebabbf58 MD |
68 | #define USTCTL_COUNTER_ATTR_DIMENSION_MAX 8 |
69 | struct ustctl_counter_attr { | |
70 | enum ustctl_counter_arithmetic arithmetic; | |
71 | enum ustctl_counter_bitness bitness; | |
72 | uint32_t nr_dimensions; | |
73 | int64_t global_sum_step; | |
74 | struct ustctl_counter_dimension dimensions[USTCTL_COUNTER_ATTR_DIMENSION_MAX]; | |
75 | }; | |
76 | ||
77 | /* | |
78 | * Counter representation within daemon. | |
79 | */ | |
80 | struct ustctl_daemon_counter { | |
81 | struct lib_counter *counter; | |
82 | const struct lttng_counter_ops *ops; | |
83 | struct ustctl_counter_attr *attr; /* initial attributes */ | |
84 | }; | |
85 | ||
74d81a6c | 86 | extern void lttng_ring_buffer_client_overwrite_init(void); |
08a3170c | 87 | extern void lttng_ring_buffer_client_overwrite_rt_init(void); |
74d81a6c | 88 | extern void lttng_ring_buffer_client_discard_init(void); |
08a3170c | 89 | extern void lttng_ring_buffer_client_discard_rt_init(void); |
74d81a6c MD |
90 | extern void lttng_ring_buffer_metadata_client_init(void); |
91 | extern void lttng_ring_buffer_client_overwrite_exit(void); | |
08a3170c | 92 | extern void lttng_ring_buffer_client_overwrite_rt_exit(void); |
74d81a6c | 93 | extern void lttng_ring_buffer_client_discard_exit(void); |
08a3170c | 94 | extern void lttng_ring_buffer_client_discard_rt_exit(void); |
74d81a6c | 95 | extern void lttng_ring_buffer_metadata_client_exit(void); |
31677417 | 96 | LTTNG_HIDDEN |
ebabbf58 | 97 | extern void lttng_counter_client_percpu_32_modular_init(void); |
31677417 | 98 | LTTNG_HIDDEN |
ebabbf58 | 99 | extern void lttng_counter_client_percpu_32_modular_exit(void); |
31677417 | 100 | LTTNG_HIDDEN |
ebabbf58 | 101 | extern void lttng_counter_client_percpu_64_modular_init(void); |
31677417 | 102 | LTTNG_HIDDEN |
ebabbf58 | 103 | extern void lttng_counter_client_percpu_64_modular_exit(void); |
74d81a6c | 104 | |
2be0e72c MD |
105 | int ustctl_release_handle(int sock, int handle) |
106 | { | |
107 | struct ustcomm_ust_msg lum; | |
108 | struct ustcomm_ust_reply lur; | |
2be0e72c | 109 | |
74d81a6c MD |
110 | if (sock < 0 || handle < 0) |
111 | return 0; | |
112 | memset(&lum, 0, sizeof(lum)); | |
113 | lum.handle = handle; | |
114 | lum.cmd = LTTNG_UST_RELEASE; | |
115 | return ustcomm_send_app_cmd(sock, &lum, &lur); | |
2be0e72c | 116 | } |
74d81a6c | 117 | |
12388166 MD |
118 | /* |
119 | * If sock is negative, it means we don't have to notify the other side | |
120 | * (e.g. application has already vanished). | |
121 | */ | |
d26228ae | 122 | int ustctl_release_object(int sock, struct lttng_ust_object_data *data) |
57773204 | 123 | { |
57773204 MD |
124 | int ret; |
125 | ||
9bfc503d MD |
126 | if (!data) |
127 | return -EINVAL; | |
128 | ||
74d81a6c MD |
129 | switch (data->type) { |
130 | case LTTNG_UST_OBJECT_TYPE_CHANNEL: | |
ff0f5728 MD |
131 | if (data->u.channel.wakeup_fd >= 0) { |
132 | ret = close(data->u.channel.wakeup_fd); | |
133 | if (ret < 0) { | |
134 | ret = -errno; | |
135 | return ret; | |
136 | } | |
dd6c697c | 137 | data->u.channel.wakeup_fd = -1; |
ff0f5728 | 138 | } |
74d81a6c | 139 | free(data->u.channel.data); |
dd6c697c | 140 | data->u.channel.data = NULL; |
74d81a6c MD |
141 | break; |
142 | case LTTNG_UST_OBJECT_TYPE_STREAM: | |
143 | if (data->u.stream.shm_fd >= 0) { | |
144 | ret = close(data->u.stream.shm_fd); | |
145 | if (ret < 0) { | |
146 | ret = -errno; | |
147 | return ret; | |
148 | } | |
dd6c697c | 149 | data->u.stream.shm_fd = -1; |
d26228ae | 150 | } |
74d81a6c MD |
151 | if (data->u.stream.wakeup_fd >= 0) { |
152 | ret = close(data->u.stream.wakeup_fd); | |
153 | if (ret < 0) { | |
154 | ret = -errno; | |
155 | return ret; | |
156 | } | |
dd6c697c | 157 | data->u.stream.wakeup_fd = -1; |
d26228ae | 158 | } |
74d81a6c | 159 | break; |
32ce8569 MD |
160 | case LTTNG_UST_OBJECT_TYPE_EVENT: |
161 | case LTTNG_UST_OBJECT_TYPE_CONTEXT: | |
d8d2416d FD |
162 | case LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER_GROUP: |
163 | case LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER: | |
32ce8569 | 164 | break; |
ebabbf58 MD |
165 | case LTTNG_UST_OBJECT_TYPE_COUNTER: |
166 | free(data->u.counter.data); | |
167 | data->u.counter.data = NULL; | |
168 | break; | |
169 | case LTTNG_UST_OBJECT_TYPE_COUNTER_GLOBAL: | |
170 | if (data->u.counter_global.shm_fd >= 0) { | |
171 | ret = close(data->u.counter_global.shm_fd); | |
172 | if (ret < 0) { | |
173 | ret = -errno; | |
174 | return ret; | |
175 | } | |
176 | data->u.counter_global.shm_fd = -1; | |
177 | } | |
178 | break; | |
179 | case LTTNG_UST_OBJECT_TYPE_COUNTER_CPU: | |
180 | if (data->u.counter_cpu.shm_fd >= 0) { | |
181 | ret = close(data->u.counter_cpu.shm_fd); | |
182 | if (ret < 0) { | |
183 | ret = -errno; | |
184 | return ret; | |
185 | } | |
186 | data->u.counter_cpu.shm_fd = -1; | |
187 | } | |
188 | break; | |
74d81a6c MD |
189 | default: |
190 | assert(0); | |
d26228ae | 191 | } |
2be0e72c | 192 | return ustctl_release_handle(sock, data->handle); |
57773204 MD |
193 | } |
194 | ||
1c5e467e MD |
195 | /* |
196 | * Send registration done packet to the application. | |
197 | */ | |
198 | int ustctl_register_done(int sock) | |
199 | { | |
200 | struct ustcomm_ust_msg lum; | |
201 | struct ustcomm_ust_reply lur; | |
202 | int ret; | |
203 | ||
204 | DBG("Sending register done command to %d", sock); | |
205 | memset(&lum, 0, sizeof(lum)); | |
206 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
207 | lum.cmd = LTTNG_UST_REGISTER_DONE; | |
208 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
209 | if (ret) | |
210 | return ret; | |
1c5e467e | 211 | return 0; |
1c5e467e MD |
212 | } |
213 | ||
57773204 MD |
214 | /* |
215 | * returns session handle. | |
216 | */ | |
217 | int ustctl_create_session(int sock) | |
218 | { | |
219 | struct ustcomm_ust_msg lum; | |
220 | struct ustcomm_ust_reply lur; | |
221 | int ret, session_handle; | |
222 | ||
223 | /* Create session */ | |
224 | memset(&lum, 0, sizeof(lum)); | |
225 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
226 | lum.cmd = LTTNG_UST_SESSION; | |
227 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
228 | if (ret) | |
229 | return ret; | |
230 | session_handle = lur.ret_val; | |
231 | DBG("received session handle %u", session_handle); | |
232 | return session_handle; | |
233 | } | |
234 | ||
57773204 | 235 | int ustctl_create_event(int sock, struct lttng_ust_event *ev, |
61f02aea MD |
236 | struct lttng_ust_object_data *channel_data, |
237 | struct lttng_ust_object_data **_event_data) | |
57773204 MD |
238 | { |
239 | struct ustcomm_ust_msg lum; | |
240 | struct ustcomm_ust_reply lur; | |
61f02aea | 241 | struct lttng_ust_object_data *event_data; |
57773204 MD |
242 | int ret; |
243 | ||
9bfc503d MD |
244 | if (!channel_data || !_event_data) |
245 | return -EINVAL; | |
246 | ||
74d81a6c | 247 | event_data = zmalloc(sizeof(*event_data)); |
57773204 MD |
248 | if (!event_data) |
249 | return -ENOMEM; | |
32ce8569 | 250 | event_data->type = LTTNG_UST_OBJECT_TYPE_EVENT; |
57773204 MD |
251 | memset(&lum, 0, sizeof(lum)); |
252 | lum.handle = channel_data->handle; | |
253 | lum.cmd = LTTNG_UST_EVENT; | |
254 | strncpy(lum.u.event.name, ev->name, | |
255 | LTTNG_UST_SYM_NAME_LEN); | |
256 | lum.u.event.instrumentation = ev->instrumentation; | |
457a6b58 MD |
257 | lum.u.event.loglevel_type = ev->loglevel_type; |
258 | lum.u.event.loglevel = ev->loglevel; | |
57773204 MD |
259 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
260 | if (ret) { | |
261 | free(event_data); | |
262 | return ret; | |
263 | } | |
264 | event_data->handle = lur.ret_val; | |
265 | DBG("received event handle %u", event_data->handle); | |
266 | *_event_data = event_data; | |
267 | return 0; | |
268 | } | |
269 | ||
53f0df51 | 270 | int ustctl_add_context(int sock, struct lttng_ust_context_attr *ctx, |
61f02aea MD |
271 | struct lttng_ust_object_data *obj_data, |
272 | struct lttng_ust_object_data **_context_data) | |
57773204 MD |
273 | { |
274 | struct ustcomm_ust_msg lum; | |
275 | struct ustcomm_ust_reply lur; | |
53f0df51 JG |
276 | struct lttng_ust_object_data *context_data = NULL; |
277 | char *buf = NULL; | |
278 | size_t len; | |
57773204 MD |
279 | int ret; |
280 | ||
53f0df51 JG |
281 | if (!obj_data || !_context_data) { |
282 | ret = -EINVAL; | |
283 | goto end; | |
284 | } | |
9bfc503d | 285 | |
74d81a6c | 286 | context_data = zmalloc(sizeof(*context_data)); |
53f0df51 JG |
287 | if (!context_data) { |
288 | ret = -ENOMEM; | |
289 | goto end; | |
290 | } | |
32ce8569 | 291 | context_data->type = LTTNG_UST_OBJECT_TYPE_CONTEXT; |
57773204 | 292 | memset(&lum, 0, sizeof(lum)); |
3039d8ed | 293 | lum.handle = obj_data->handle; |
57773204 | 294 | lum.cmd = LTTNG_UST_CONTEXT; |
53f0df51 JG |
295 | |
296 | lum.u.context.ctx = ctx->ctx; | |
297 | switch (ctx->ctx) { | |
298 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: | |
299 | lum.u.context.u.perf_counter = ctx->u.perf_counter; | |
300 | break; | |
301 | case LTTNG_UST_CONTEXT_APP_CONTEXT: | |
302 | { | |
303 | size_t provider_name_len = strlen( | |
304 | ctx->u.app_ctx.provider_name) + 1; | |
305 | size_t ctx_name_len = strlen(ctx->u.app_ctx.ctx_name) + 1; | |
306 | ||
307 | lum.u.context.u.app_ctx.provider_name_len = provider_name_len; | |
308 | lum.u.context.u.app_ctx.ctx_name_len = ctx_name_len; | |
309 | ||
310 | len = provider_name_len + ctx_name_len; | |
311 | buf = zmalloc(len); | |
312 | if (!buf) { | |
313 | ret = -ENOMEM; | |
314 | goto end; | |
315 | } | |
316 | memcpy(buf, ctx->u.app_ctx.provider_name, | |
317 | provider_name_len); | |
318 | memcpy(buf + provider_name_len, ctx->u.app_ctx.ctx_name, | |
319 | ctx_name_len); | |
320 | break; | |
321 | } | |
322 | default: | |
323 | break; | |
324 | } | |
325 | ret = ustcomm_send_app_msg(sock, &lum); | |
326 | if (ret) | |
327 | goto end; | |
328 | if (buf) { | |
329 | /* send var len ctx_name */ | |
330 | ret = ustcomm_send_unix_sock(sock, buf, len); | |
331 | if (ret < 0) { | |
332 | goto end; | |
333 | } | |
334 | if (ret != len) { | |
335 | ret = -EINVAL; | |
336 | goto end; | |
337 | } | |
338 | } | |
339 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
340 | if (ret < 0) { | |
341 | goto end; | |
57773204 | 342 | } |
32ce8569 MD |
343 | context_data->handle = -1; |
344 | DBG("Context created successfully"); | |
57773204 | 345 | *_context_data = context_data; |
53f0df51 JG |
346 | context_data = NULL; |
347 | end: | |
348 | free(context_data); | |
349 | free(buf); | |
57773204 MD |
350 | return ret; |
351 | } | |
352 | ||
cd54f6d9 MD |
353 | int ustctl_set_filter(int sock, struct lttng_ust_filter_bytecode *bytecode, |
354 | struct lttng_ust_object_data *obj_data) | |
355 | { | |
356 | struct ustcomm_ust_msg lum; | |
357 | struct ustcomm_ust_reply lur; | |
358 | int ret; | |
359 | ||
360 | if (!obj_data) | |
361 | return -EINVAL; | |
362 | ||
363 | memset(&lum, 0, sizeof(lum)); | |
364 | lum.handle = obj_data->handle; | |
365 | lum.cmd = LTTNG_UST_FILTER; | |
366 | lum.u.filter.data_size = bytecode->len; | |
367 | lum.u.filter.reloc_offset = bytecode->reloc_offset; | |
e695af51 | 368 | lum.u.filter.seqnum = bytecode->seqnum; |
cd54f6d9 MD |
369 | |
370 | ret = ustcomm_send_app_msg(sock, &lum); | |
d37ecb3f FD |
371 | if (ret) |
372 | return ret; | |
373 | /* send var len bytecode */ | |
374 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
375 | bytecode->len); | |
376 | if (ret < 0) { | |
377 | return ret; | |
378 | } | |
379 | if (ret != bytecode->len) | |
380 | return -EINVAL; | |
381 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
382 | } | |
383 | ||
384 | int ustctl_set_capture(int sock, struct lttng_ust_capture_bytecode *bytecode, | |
385 | struct lttng_ust_object_data *obj_data) | |
386 | { | |
387 | struct ustcomm_ust_msg lum; | |
388 | struct ustcomm_ust_reply lur; | |
389 | int ret; | |
390 | ||
391 | if (!obj_data) | |
392 | return -EINVAL; | |
393 | ||
394 | memset(&lum, 0, sizeof(lum)); | |
395 | lum.handle = obj_data->handle; | |
396 | lum.cmd = LTTNG_UST_CAPTURE; | |
397 | lum.u.capture.data_size = bytecode->len; | |
398 | lum.u.capture.reloc_offset = bytecode->reloc_offset; | |
399 | lum.u.capture.seqnum = bytecode->seqnum; | |
400 | ||
401 | ret = ustcomm_send_app_msg(sock, &lum); | |
cd54f6d9 MD |
402 | if (ret) |
403 | return ret; | |
cd54f6d9 MD |
404 | /* send var len bytecode */ |
405 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
406 | bytecode->len); | |
407 | if (ret < 0) { | |
408 | return ret; | |
409 | } | |
7bc53e94 MD |
410 | if (ret != bytecode->len) |
411 | return -EINVAL; | |
412 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
cd54f6d9 MD |
413 | } |
414 | ||
da57c034 JI |
415 | int ustctl_set_exclusion(int sock, struct lttng_ust_event_exclusion *exclusion, |
416 | struct lttng_ust_object_data *obj_data) | |
417 | { | |
418 | struct ustcomm_ust_msg lum; | |
419 | struct ustcomm_ust_reply lur; | |
420 | int ret; | |
421 | ||
422 | if (!obj_data) { | |
423 | return -EINVAL; | |
424 | } | |
425 | ||
426 | memset(&lum, 0, sizeof(lum)); | |
427 | lum.handle = obj_data->handle; | |
428 | lum.cmd = LTTNG_UST_EXCLUSION; | |
429 | lum.u.exclusion.count = exclusion->count; | |
430 | ||
431 | ret = ustcomm_send_app_msg(sock, &lum); | |
432 | if (ret) { | |
433 | return ret; | |
434 | } | |
435 | ||
1628366f | 436 | /* send var len exclusion names */ |
da57c034 JI |
437 | ret = ustcomm_send_unix_sock(sock, |
438 | exclusion->names, | |
439 | exclusion->count * LTTNG_UST_SYM_NAME_LEN); | |
440 | if (ret < 0) { | |
441 | return ret; | |
442 | } | |
443 | if (ret != exclusion->count * LTTNG_UST_SYM_NAME_LEN) { | |
444 | return -EINVAL; | |
445 | } | |
446 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
447 | } | |
448 | ||
57773204 | 449 | /* Enable event, channel and session ioctl */ |
61f02aea | 450 | int ustctl_enable(int sock, struct lttng_ust_object_data *object) |
57773204 MD |
451 | { |
452 | struct ustcomm_ust_msg lum; | |
453 | struct ustcomm_ust_reply lur; | |
454 | int ret; | |
455 | ||
9bfc503d MD |
456 | if (!object) |
457 | return -EINVAL; | |
458 | ||
57773204 MD |
459 | memset(&lum, 0, sizeof(lum)); |
460 | lum.handle = object->handle; | |
461 | lum.cmd = LTTNG_UST_ENABLE; | |
462 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
463 | if (ret) | |
464 | return ret; | |
465 | DBG("enabled handle %u", object->handle); | |
466 | return 0; | |
467 | } | |
468 | ||
469 | /* Disable event, channel and session ioctl */ | |
61f02aea | 470 | int ustctl_disable(int sock, struct lttng_ust_object_data *object) |
57773204 MD |
471 | { |
472 | struct ustcomm_ust_msg lum; | |
473 | struct ustcomm_ust_reply lur; | |
474 | int ret; | |
475 | ||
9bfc503d MD |
476 | if (!object) |
477 | return -EINVAL; | |
478 | ||
57773204 MD |
479 | memset(&lum, 0, sizeof(lum)); |
480 | lum.handle = object->handle; | |
481 | lum.cmd = LTTNG_UST_DISABLE; | |
482 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
483 | if (ret) | |
484 | return ret; | |
485 | DBG("disable handle %u", object->handle); | |
486 | return 0; | |
487 | } | |
488 | ||
4a6ca058 | 489 | int ustctl_start_session(int sock, int handle) |
57773204 | 490 | { |
61f02aea | 491 | struct lttng_ust_object_data obj; |
4a6ca058 MD |
492 | |
493 | obj.handle = handle; | |
494 | return ustctl_enable(sock, &obj); | |
57773204 MD |
495 | } |
496 | ||
4a6ca058 | 497 | int ustctl_stop_session(int sock, int handle) |
57773204 | 498 | { |
61f02aea | 499 | struct lttng_ust_object_data obj; |
4a6ca058 MD |
500 | |
501 | obj.handle = handle; | |
502 | return ustctl_disable(sock, &obj); | |
57773204 MD |
503 | } |
504 | ||
d8d2416d FD |
505 | int ustctl_create_event_notifier_group(int sock, int pipe_fd, |
506 | struct lttng_ust_object_data **_event_notifier_group_data) | |
507 | { | |
508 | struct lttng_ust_object_data *event_notifier_group_data; | |
509 | struct ustcomm_ust_msg lum; | |
510 | struct ustcomm_ust_reply lur; | |
511 | ssize_t len; | |
512 | int ret; | |
513 | ||
514 | if (!_event_notifier_group_data) | |
515 | return -EINVAL; | |
516 | ||
517 | event_notifier_group_data = zmalloc(sizeof(*event_notifier_group_data)); | |
518 | if (!event_notifier_group_data) | |
519 | return -ENOMEM; | |
520 | ||
521 | event_notifier_group_data->type = LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER_GROUP; | |
522 | ||
523 | memset(&lum, 0, sizeof(lum)); | |
524 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
525 | lum.cmd = LTTNG_UST_EVENT_NOTIFIER_GROUP_CREATE; | |
526 | ||
527 | ret = ustcomm_send_app_msg(sock, &lum); | |
528 | if (ret) | |
529 | goto error; | |
530 | ||
531 | /* Send event_notifier notification pipe. */ | |
532 | len = ustcomm_send_fds_unix_sock(sock, &pipe_fd, 1); | |
533 | if (len <= 0) { | |
534 | ret = len; | |
535 | goto error; | |
536 | } | |
537 | ||
538 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
539 | if (ret) | |
540 | goto error; | |
541 | ||
542 | event_notifier_group_data->handle = lur.ret_val; | |
543 | DBG("received event_notifier group handle %d", event_notifier_group_data->handle); | |
544 | ||
545 | *_event_notifier_group_data = event_notifier_group_data; | |
546 | ||
547 | ret = 0; | |
548 | goto end; | |
549 | error: | |
550 | free(event_notifier_group_data); | |
551 | ||
552 | end: | |
553 | return ret; | |
554 | } | |
555 | ||
556 | int ustctl_create_event_notifier(int sock, struct lttng_ust_event_notifier *event_notifier, | |
557 | struct lttng_ust_object_data *event_notifier_group, | |
558 | struct lttng_ust_object_data **_event_notifier_data) | |
559 | { | |
560 | struct ustcomm_ust_msg lum; | |
561 | struct ustcomm_ust_reply lur; | |
562 | struct lttng_ust_object_data *event_notifier_data; | |
8406222c | 563 | ssize_t len; |
d8d2416d FD |
564 | int ret; |
565 | ||
566 | if (!event_notifier_group || !_event_notifier_data) | |
567 | return -EINVAL; | |
568 | ||
569 | event_notifier_data = zmalloc(sizeof(*event_notifier_data)); | |
570 | if (!event_notifier_data) | |
571 | return -ENOMEM; | |
572 | ||
573 | event_notifier_data->type = LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER; | |
574 | ||
575 | memset(&lum, 0, sizeof(lum)); | |
576 | lum.handle = event_notifier_group->handle; | |
577 | lum.cmd = LTTNG_UST_EVENT_NOTIFIER_CREATE; | |
8406222c | 578 | lum.u.event_notifier.len = sizeof(*event_notifier); |
d8d2416d | 579 | |
41844673 | 580 | ret = ustcomm_send_app_msg(sock, &lum); |
d8d2416d FD |
581 | if (ret) { |
582 | free(event_notifier_data); | |
583 | return ret; | |
584 | } | |
8406222c MD |
585 | /* Send struct lttng_ust_event_notifier */ |
586 | len = ustcomm_send_unix_sock(sock, event_notifier, sizeof(*event_notifier)); | |
587 | if (len != sizeof(*event_notifier)) { | |
588 | if (len < 0) | |
589 | return len; | |
590 | else | |
591 | return -EIO; | |
592 | } | |
41844673 MD |
593 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); |
594 | if (ret) { | |
595 | free(event_notifier_data); | |
596 | return ret; | |
597 | } | |
d8d2416d FD |
598 | event_notifier_data->handle = lur.ret_val; |
599 | DBG("received event_notifier handle %u", event_notifier_data->handle); | |
600 | *_event_notifier_data = event_notifier_data; | |
601 | ||
602 | return ret; | |
603 | } | |
604 | ||
57773204 MD |
605 | int ustctl_tracepoint_list(int sock) |
606 | { | |
b115631f MD |
607 | struct ustcomm_ust_msg lum; |
608 | struct ustcomm_ust_reply lur; | |
609 | int ret, tp_list_handle; | |
610 | ||
611 | memset(&lum, 0, sizeof(lum)); | |
612 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
613 | lum.cmd = LTTNG_UST_TRACEPOINT_LIST; | |
614 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
615 | if (ret) | |
616 | return ret; | |
617 | tp_list_handle = lur.ret_val; | |
618 | DBG("received tracepoint list handle %u", tp_list_handle); | |
619 | return tp_list_handle; | |
620 | } | |
621 | ||
622 | int ustctl_tracepoint_list_get(int sock, int tp_list_handle, | |
cbef6901 | 623 | struct lttng_ust_tracepoint_iter *iter) |
b115631f MD |
624 | { |
625 | struct ustcomm_ust_msg lum; | |
626 | struct ustcomm_ust_reply lur; | |
627 | int ret; | |
628 | ||
9bfc503d MD |
629 | if (!iter) |
630 | return -EINVAL; | |
631 | ||
b115631f MD |
632 | memset(&lum, 0, sizeof(lum)); |
633 | lum.handle = tp_list_handle; | |
634 | lum.cmd = LTTNG_UST_TRACEPOINT_LIST_GET; | |
635 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
636 | if (ret) | |
637 | return ret; | |
882a56d7 | 638 | DBG("received tracepoint list entry name %s loglevel %d", |
cbef6901 | 639 | lur.u.tracepoint.name, |
882a56d7 | 640 | lur.u.tracepoint.loglevel); |
cbef6901 | 641 | memcpy(iter, &lur.u.tracepoint, sizeof(*iter)); |
b115631f | 642 | return 0; |
57773204 MD |
643 | } |
644 | ||
40003310 MD |
645 | int ustctl_tracepoint_field_list(int sock) |
646 | { | |
647 | struct ustcomm_ust_msg lum; | |
648 | struct ustcomm_ust_reply lur; | |
649 | int ret, tp_field_list_handle; | |
650 | ||
651 | memset(&lum, 0, sizeof(lum)); | |
652 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
653 | lum.cmd = LTTNG_UST_TRACEPOINT_FIELD_LIST; | |
654 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
655 | if (ret) | |
656 | return ret; | |
657 | tp_field_list_handle = lur.ret_val; | |
658 | DBG("received tracepoint field list handle %u", tp_field_list_handle); | |
659 | return tp_field_list_handle; | |
660 | } | |
661 | ||
662 | int ustctl_tracepoint_field_list_get(int sock, int tp_field_list_handle, | |
663 | struct lttng_ust_field_iter *iter) | |
664 | { | |
665 | struct ustcomm_ust_msg lum; | |
666 | struct ustcomm_ust_reply lur; | |
667 | int ret; | |
668 | ssize_t len; | |
669 | ||
670 | if (!iter) | |
671 | return -EINVAL; | |
672 | ||
673 | memset(&lum, 0, sizeof(lum)); | |
674 | lum.handle = tp_field_list_handle; | |
675 | lum.cmd = LTTNG_UST_TRACEPOINT_FIELD_LIST_GET; | |
676 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
677 | if (ret) | |
678 | return ret; | |
679 | len = ustcomm_recv_unix_sock(sock, iter, sizeof(*iter)); | |
680 | if (len != sizeof(*iter)) { | |
681 | return -EINVAL; | |
682 | } | |
683 | DBG("received tracepoint field list entry event_name %s event_loglevel %d field_name %s field_type %d", | |
684 | iter->event_name, | |
685 | iter->loglevel, | |
686 | iter->field_name, | |
687 | iter->type); | |
688 | return 0; | |
689 | } | |
690 | ||
57773204 MD |
691 | int ustctl_tracer_version(int sock, struct lttng_ust_tracer_version *v) |
692 | { | |
693 | struct ustcomm_ust_msg lum; | |
694 | struct ustcomm_ust_reply lur; | |
695 | int ret; | |
696 | ||
9bfc503d MD |
697 | if (!v) |
698 | return -EINVAL; | |
699 | ||
57773204 MD |
700 | memset(&lum, 0, sizeof(lum)); |
701 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
702 | lum.cmd = LTTNG_UST_TRACER_VERSION; | |
703 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
704 | if (ret) | |
705 | return ret; | |
706 | memcpy(v, &lur.u.version, sizeof(*v)); | |
707 | DBG("received tracer version"); | |
708 | return 0; | |
709 | } | |
710 | ||
711 | int ustctl_wait_quiescent(int sock) | |
712 | { | |
713 | struct ustcomm_ust_msg lum; | |
714 | struct ustcomm_ust_reply lur; | |
715 | int ret; | |
716 | ||
717 | memset(&lum, 0, sizeof(lum)); | |
718 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
719 | lum.cmd = LTTNG_UST_WAIT_QUIESCENT; | |
720 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
721 | if (ret) | |
722 | return ret; | |
723 | DBG("waited for quiescent state"); | |
724 | return 0; | |
725 | } | |
726 | ||
727 | int ustctl_calibrate(int sock, struct lttng_ust_calibrate *calibrate) | |
728 | { | |
9bfc503d MD |
729 | if (!calibrate) |
730 | return -EINVAL; | |
731 | ||
57773204 MD |
732 | return -ENOSYS; |
733 | } | |
734 | ||
f1fffc57 MD |
735 | int ustctl_sock_flush_buffer(int sock, struct lttng_ust_object_data *object) |
736 | { | |
737 | struct ustcomm_ust_msg lum; | |
738 | struct ustcomm_ust_reply lur; | |
739 | int ret; | |
740 | ||
9bfc503d MD |
741 | if (!object) |
742 | return -EINVAL; | |
743 | ||
f1fffc57 MD |
744 | memset(&lum, 0, sizeof(lum)); |
745 | lum.handle = object->handle; | |
746 | lum.cmd = LTTNG_UST_FLUSH_BUFFER; | |
747 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
748 | if (ret) | |
749 | return ret; | |
750 | DBG("flushed buffer handle %u", object->handle); | |
751 | return 0; | |
752 | } | |
753 | ||
74d81a6c MD |
754 | static |
755 | int ustctl_send_channel(int sock, | |
756 | enum lttng_ust_chan_type type, | |
757 | void *data, | |
758 | uint64_t size, | |
ff0f5728 | 759 | int wakeup_fd, |
74d81a6c MD |
760 | int send_fd_only) |
761 | { | |
762 | ssize_t len; | |
763 | ||
764 | if (!send_fd_only) { | |
765 | /* Send mmap size */ | |
766 | len = ustcomm_send_unix_sock(sock, &size, sizeof(size)); | |
767 | if (len != sizeof(size)) { | |
768 | if (len < 0) | |
769 | return len; | |
770 | else | |
771 | return -EIO; | |
772 | } | |
773 | ||
774 | /* Send channel type */ | |
775 | len = ustcomm_send_unix_sock(sock, &type, sizeof(type)); | |
776 | if (len != sizeof(type)) { | |
777 | if (len < 0) | |
778 | return len; | |
779 | else | |
780 | return -EIO; | |
781 | } | |
782 | } | |
783 | ||
784 | /* Send channel data */ | |
785 | len = ustcomm_send_unix_sock(sock, data, size); | |
786 | if (len != size) { | |
787 | if (len < 0) | |
788 | return len; | |
789 | else | |
790 | return -EIO; | |
791 | } | |
57773204 | 792 | |
ff0f5728 MD |
793 | /* Send wakeup fd */ |
794 | len = ustcomm_send_fds_unix_sock(sock, &wakeup_fd, 1); | |
795 | if (len <= 0) { | |
796 | if (len < 0) | |
797 | return len; | |
798 | else | |
799 | return -EIO; | |
800 | } | |
74d81a6c MD |
801 | return 0; |
802 | } | |
803 | ||
804 | static | |
805 | int ustctl_send_stream(int sock, | |
806 | uint32_t stream_nr, | |
807 | uint64_t memory_map_size, | |
808 | int shm_fd, int wakeup_fd, | |
809 | int send_fd_only) | |
57773204 | 810 | { |
74d81a6c MD |
811 | ssize_t len; |
812 | int fds[2]; | |
813 | ||
814 | if (!send_fd_only) { | |
815 | if (shm_fd < 0) { | |
816 | /* finish iteration */ | |
817 | uint64_t v = -1; | |
818 | ||
819 | len = ustcomm_send_unix_sock(sock, &v, sizeof(v)); | |
820 | if (len != sizeof(v)) { | |
821 | if (len < 0) | |
822 | return len; | |
823 | else | |
824 | return -EIO; | |
825 | } | |
826 | return 0; | |
827 | } | |
828 | ||
829 | /* Send mmap size */ | |
830 | len = ustcomm_send_unix_sock(sock, &memory_map_size, | |
831 | sizeof(memory_map_size)); | |
832 | if (len != sizeof(memory_map_size)) { | |
833 | if (len < 0) | |
834 | return len; | |
835 | else | |
836 | return -EIO; | |
837 | } | |
838 | ||
839 | /* Send stream nr */ | |
840 | len = ustcomm_send_unix_sock(sock, &stream_nr, | |
841 | sizeof(stream_nr)); | |
842 | if (len != sizeof(stream_nr)) { | |
843 | if (len < 0) | |
844 | return len; | |
845 | else | |
846 | return -EIO; | |
847 | } | |
848 | } | |
849 | ||
850 | /* Send shm fd and wakeup fd */ | |
851 | fds[0] = shm_fd; | |
852 | fds[1] = wakeup_fd; | |
853 | len = ustcomm_send_fds_unix_sock(sock, fds, 2); | |
854 | if (len <= 0) { | |
855 | if (len < 0) | |
856 | return len; | |
857 | else | |
858 | return -EIO; | |
859 | } | |
860 | return 0; | |
861 | } | |
862 | ||
863 | int ustctl_recv_channel_from_consumer(int sock, | |
864 | struct lttng_ust_object_data **_channel_data) | |
865 | { | |
866 | struct lttng_ust_object_data *channel_data; | |
867 | ssize_t len; | |
ff0f5728 | 868 | int wakeup_fd; |
7a784989 | 869 | int ret; |
57773204 | 870 | |
74d81a6c MD |
871 | channel_data = zmalloc(sizeof(*channel_data)); |
872 | if (!channel_data) { | |
873 | ret = -ENOMEM; | |
874 | goto error_alloc; | |
875 | } | |
876 | channel_data->type = LTTNG_UST_OBJECT_TYPE_CHANNEL; | |
12f3dabc | 877 | channel_data->handle = -1; |
74d81a6c MD |
878 | |
879 | /* recv mmap size */ | |
880 | len = ustcomm_recv_unix_sock(sock, &channel_data->size, | |
881 | sizeof(channel_data->size)); | |
882 | if (len != sizeof(channel_data->size)) { | |
883 | if (len < 0) | |
884 | ret = len; | |
885 | else | |
886 | ret = -EINVAL; | |
887 | goto error; | |
888 | } | |
9bfc503d | 889 | |
74d81a6c MD |
890 | /* recv channel type */ |
891 | len = ustcomm_recv_unix_sock(sock, &channel_data->u.channel.type, | |
892 | sizeof(channel_data->u.channel.type)); | |
893 | if (len != sizeof(channel_data->u.channel.type)) { | |
894 | if (len < 0) | |
895 | ret = len; | |
896 | else | |
897 | ret = -EINVAL; | |
898 | goto error; | |
899 | } | |
900 | ||
901 | /* recv channel data */ | |
902 | channel_data->u.channel.data = zmalloc(channel_data->size); | |
903 | if (!channel_data->u.channel.data) { | |
904 | ret = -ENOMEM; | |
905 | goto error; | |
906 | } | |
907 | len = ustcomm_recv_unix_sock(sock, channel_data->u.channel.data, | |
908 | channel_data->size); | |
909 | if (len != channel_data->size) { | |
910 | if (len < 0) | |
911 | ret = len; | |
912 | else | |
913 | ret = -EINVAL; | |
914 | goto error_recv_data; | |
915 | } | |
ff0f5728 MD |
916 | /* recv wakeup fd */ |
917 | len = ustcomm_recv_fds_unix_sock(sock, &wakeup_fd, 1); | |
918 | if (len <= 0) { | |
919 | if (len < 0) { | |
920 | ret = len; | |
921 | goto error_recv_data; | |
922 | } else { | |
923 | ret = -EIO; | |
924 | goto error_recv_data; | |
925 | } | |
926 | } | |
927 | channel_data->u.channel.wakeup_fd = wakeup_fd; | |
74d81a6c MD |
928 | *_channel_data = channel_data; |
929 | return 0; | |
930 | ||
931 | error_recv_data: | |
932 | free(channel_data->u.channel.data); | |
933 | error: | |
934 | free(channel_data); | |
935 | error_alloc: | |
936 | return ret; | |
937 | } | |
938 | ||
939 | int ustctl_recv_stream_from_consumer(int sock, | |
940 | struct lttng_ust_object_data **_stream_data) | |
941 | { | |
942 | struct lttng_ust_object_data *stream_data; | |
943 | ssize_t len; | |
944 | int ret; | |
945 | int fds[2]; | |
946 | ||
947 | stream_data = zmalloc(sizeof(*stream_data)); | |
948 | if (!stream_data) { | |
949 | ret = -ENOMEM; | |
950 | goto error_alloc; | |
57773204 | 951 | } |
74d81a6c MD |
952 | |
953 | stream_data->type = LTTNG_UST_OBJECT_TYPE_STREAM; | |
954 | stream_data->handle = -1; | |
955 | ||
956 | /* recv mmap size */ | |
957 | len = ustcomm_recv_unix_sock(sock, &stream_data->size, | |
958 | sizeof(stream_data->size)); | |
959 | if (len != sizeof(stream_data->size)) { | |
960 | if (len < 0) | |
961 | ret = len; | |
962 | else | |
963 | ret = -EINVAL; | |
964 | goto error; | |
965 | } | |
966 | if (stream_data->size == -1) { | |
967 | ret = -LTTNG_UST_ERR_NOENT; | |
968 | goto error; | |
969 | } | |
970 | ||
971 | /* recv stream nr */ | |
972 | len = ustcomm_recv_unix_sock(sock, &stream_data->u.stream.stream_nr, | |
973 | sizeof(stream_data->u.stream.stream_nr)); | |
974 | if (len != sizeof(stream_data->u.stream.stream_nr)) { | |
975 | if (len < 0) | |
976 | ret = len; | |
977 | else | |
978 | ret = -EINVAL; | |
979 | goto error; | |
980 | } | |
981 | ||
982 | /* recv shm fd and wakeup fd */ | |
983 | len = ustcomm_recv_fds_unix_sock(sock, fds, 2); | |
984 | if (len <= 0) { | |
985 | if (len < 0) { | |
986 | ret = len; | |
987 | goto error; | |
988 | } else { | |
989 | ret = -EIO; | |
990 | goto error; | |
0bfe09ec | 991 | } |
0bfe09ec | 992 | } |
74d81a6c MD |
993 | stream_data->u.stream.shm_fd = fds[0]; |
994 | stream_data->u.stream.wakeup_fd = fds[1]; | |
995 | *_stream_data = stream_data; | |
996 | return 0; | |
0bfe09ec | 997 | |
74d81a6c MD |
998 | error: |
999 | free(stream_data); | |
1000 | error_alloc: | |
1001 | return ret; | |
1002 | } | |
1003 | ||
1004 | int ustctl_send_channel_to_ust(int sock, int session_handle, | |
1005 | struct lttng_ust_object_data *channel_data) | |
1006 | { | |
1007 | struct ustcomm_ust_msg lum; | |
1008 | struct ustcomm_ust_reply lur; | |
1009 | int ret; | |
1010 | ||
1011 | if (!channel_data) | |
1012 | return -EINVAL; | |
1013 | ||
1014 | memset(&lum, 0, sizeof(lum)); | |
1015 | lum.handle = session_handle; | |
1016 | lum.cmd = LTTNG_UST_CHANNEL; | |
1017 | lum.u.channel.len = channel_data->size; | |
1018 | lum.u.channel.type = channel_data->u.channel.type; | |
1019 | ret = ustcomm_send_app_msg(sock, &lum); | |
1020 | if (ret) | |
1021 | return ret; | |
1022 | ||
1023 | ret = ustctl_send_channel(sock, | |
1024 | channel_data->u.channel.type, | |
1025 | channel_data->u.channel.data, | |
1026 | channel_data->size, | |
ff0f5728 | 1027 | channel_data->u.channel.wakeup_fd, |
74d81a6c MD |
1028 | 1); |
1029 | if (ret) | |
1030 | return ret; | |
1031 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1032 | if (!ret) { | |
7f2348b8 | 1033 | channel_data->handle = lur.ret_val; |
57773204 | 1034 | } |
74d81a6c MD |
1035 | return ret; |
1036 | } | |
1037 | ||
1038 | int ustctl_send_stream_to_ust(int sock, | |
1039 | struct lttng_ust_object_data *channel_data, | |
1040 | struct lttng_ust_object_data *stream_data) | |
1041 | { | |
1042 | struct ustcomm_ust_msg lum; | |
1043 | struct ustcomm_ust_reply lur; | |
1044 | int ret; | |
1045 | ||
1046 | memset(&lum, 0, sizeof(lum)); | |
1047 | lum.handle = channel_data->handle; | |
1048 | lum.cmd = LTTNG_UST_STREAM; | |
1049 | lum.u.stream.len = stream_data->size; | |
1050 | lum.u.stream.stream_nr = stream_data->u.stream.stream_nr; | |
1051 | ret = ustcomm_send_app_msg(sock, &lum); | |
1052 | if (ret) | |
1053 | return ret; | |
1054 | ||
1055 | assert(stream_data); | |
1056 | assert(stream_data->type == LTTNG_UST_OBJECT_TYPE_STREAM); | |
1057 | ||
1058 | ret = ustctl_send_stream(sock, | |
1059 | stream_data->u.stream.stream_nr, | |
1060 | stream_data->size, | |
1061 | stream_data->u.stream.shm_fd, | |
1062 | stream_data->u.stream.wakeup_fd, 1); | |
1063 | if (ret) | |
1064 | return ret; | |
1065 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1066 | } | |
1067 | ||
12f3dabc MD |
1068 | int ustctl_duplicate_ust_object_data(struct lttng_ust_object_data **dest, |
1069 | struct lttng_ust_object_data *src) | |
1070 | { | |
1071 | struct lttng_ust_object_data *obj; | |
1072 | int ret; | |
1073 | ||
1074 | if (src->handle != -1) { | |
1075 | ret = -EINVAL; | |
1076 | goto error; | |
1077 | } | |
1078 | ||
1079 | obj = zmalloc(sizeof(*obj)); | |
1080 | if (!obj) { | |
1081 | ret = -ENOMEM; | |
1082 | goto error; | |
1083 | } | |
1084 | ||
1085 | obj->type = src->type; | |
1086 | obj->handle = src->handle; | |
1087 | obj->size = src->size; | |
1088 | ||
1089 | switch (obj->type) { | |
1090 | case LTTNG_UST_OBJECT_TYPE_CHANNEL: | |
1091 | { | |
1092 | obj->u.channel.type = src->u.channel.type; | |
1093 | if (src->u.channel.wakeup_fd >= 0) { | |
1094 | obj->u.channel.wakeup_fd = | |
1095 | dup(src->u.channel.wakeup_fd); | |
1096 | if (obj->u.channel.wakeup_fd < 0) { | |
1097 | ret = errno; | |
1098 | goto chan_error_wakeup_fd; | |
1099 | } | |
1100 | } else { | |
1101 | obj->u.channel.wakeup_fd = | |
1102 | src->u.channel.wakeup_fd; | |
1103 | } | |
1104 | obj->u.channel.data = zmalloc(obj->size); | |
1105 | if (!obj->u.channel.data) { | |
1106 | ret = -ENOMEM; | |
1107 | goto chan_error_alloc; | |
1108 | } | |
1109 | memcpy(obj->u.channel.data, src->u.channel.data, obj->size); | |
1110 | break; | |
1111 | ||
1112 | chan_error_alloc: | |
1113 | if (src->u.channel.wakeup_fd >= 0) { | |
1114 | int closeret; | |
1115 | ||
1116 | closeret = close(obj->u.channel.wakeup_fd); | |
1117 | if (closeret) { | |
1118 | PERROR("close"); | |
1119 | } | |
1120 | } | |
1121 | chan_error_wakeup_fd: | |
1122 | goto error_type; | |
1123 | ||
1124 | } | |
1125 | ||
1126 | case LTTNG_UST_OBJECT_TYPE_STREAM: | |
1127 | { | |
1128 | obj->u.stream.stream_nr = src->u.stream.stream_nr; | |
1129 | if (src->u.stream.wakeup_fd >= 0) { | |
1130 | obj->u.stream.wakeup_fd = | |
1131 | dup(src->u.stream.wakeup_fd); | |
1132 | if (obj->u.stream.wakeup_fd < 0) { | |
1133 | ret = errno; | |
1134 | goto stream_error_wakeup_fd; | |
1135 | } | |
1136 | } else { | |
1137 | obj->u.stream.wakeup_fd = | |
1138 | src->u.stream.wakeup_fd; | |
1139 | } | |
1140 | ||
1141 | if (src->u.stream.shm_fd >= 0) { | |
1142 | obj->u.stream.shm_fd = | |
1143 | dup(src->u.stream.shm_fd); | |
1144 | if (obj->u.stream.shm_fd < 0) { | |
1145 | ret = errno; | |
1146 | goto stream_error_shm_fd; | |
1147 | } | |
1148 | } else { | |
1149 | obj->u.stream.shm_fd = | |
1150 | src->u.stream.shm_fd; | |
1151 | } | |
1152 | break; | |
1153 | ||
1154 | stream_error_shm_fd: | |
1155 | if (src->u.stream.wakeup_fd >= 0) { | |
1156 | int closeret; | |
1157 | ||
1158 | closeret = close(obj->u.stream.wakeup_fd); | |
1159 | if (closeret) { | |
1160 | PERROR("close"); | |
1161 | } | |
1162 | } | |
1163 | stream_error_wakeup_fd: | |
1164 | goto error_type; | |
1165 | } | |
1166 | ||
ebabbf58 MD |
1167 | case LTTNG_UST_OBJECT_TYPE_COUNTER: |
1168 | { | |
1169 | obj->u.counter.data = zmalloc(obj->size); | |
1170 | if (!obj->u.counter.data) { | |
1171 | ret = -ENOMEM; | |
1172 | goto error_type; | |
1173 | } | |
1174 | memcpy(obj->u.counter.data, src->u.counter.data, obj->size); | |
1175 | break; | |
1176 | } | |
1177 | ||
1178 | case LTTNG_UST_OBJECT_TYPE_COUNTER_GLOBAL: | |
1179 | { | |
1180 | if (src->u.counter_global.shm_fd >= 0) { | |
1181 | obj->u.counter_global.shm_fd = | |
1182 | dup(src->u.counter_global.shm_fd); | |
1183 | if (obj->u.counter_global.shm_fd < 0) { | |
1184 | ret = errno; | |
1185 | goto error_type; | |
1186 | } | |
1187 | } | |
1188 | break; | |
1189 | } | |
1190 | ||
1191 | case LTTNG_UST_OBJECT_TYPE_COUNTER_CPU: | |
1192 | { | |
1193 | obj->u.counter_cpu.cpu_nr = src->u.counter_cpu.cpu_nr; | |
1194 | if (src->u.counter_cpu.shm_fd >= 0) { | |
1195 | obj->u.counter_cpu.shm_fd = | |
1196 | dup(src->u.counter_cpu.shm_fd); | |
1197 | if (obj->u.counter_cpu.shm_fd < 0) { | |
1198 | ret = errno; | |
1199 | goto error_type; | |
1200 | } | |
1201 | } | |
1202 | break; | |
1203 | } | |
1204 | ||
12f3dabc MD |
1205 | default: |
1206 | ret = -EINVAL; | |
1207 | goto error_type; | |
1208 | } | |
1209 | ||
1210 | *dest = obj; | |
1211 | return 0; | |
1212 | ||
1213 | error_type: | |
1214 | free(obj); | |
1215 | error: | |
1216 | return ret; | |
1217 | } | |
1218 | ||
74d81a6c MD |
1219 | |
1220 | /* Buffer operations */ | |
1221 | ||
5ea386c3 MD |
1222 | int ustctl_get_nr_stream_per_channel(void) |
1223 | { | |
1224 | return num_possible_cpus(); | |
1225 | } | |
1226 | ||
74d81a6c | 1227 | struct ustctl_consumer_channel * |
5ea386c3 MD |
1228 | ustctl_create_channel(struct ustctl_consumer_channel_attr *attr, |
1229 | const int *stream_fds, int nr_stream_fds) | |
74d81a6c MD |
1230 | { |
1231 | struct ustctl_consumer_channel *chan; | |
1232 | const char *transport_name; | |
1233 | struct lttng_transport *transport; | |
1234 | ||
1235 | switch (attr->type) { | |
1236 | case LTTNG_UST_CHAN_PER_CPU: | |
1237 | if (attr->output == LTTNG_UST_MMAP) { | |
34a91bdb MD |
1238 | if (attr->overwrite) { |
1239 | if (attr->read_timer_interval == 0) { | |
1240 | transport_name = "relay-overwrite-mmap"; | |
1241 | } else { | |
1242 | transport_name = "relay-overwrite-rt-mmap"; | |
1243 | } | |
1244 | } else { | |
1245 | if (attr->read_timer_interval == 0) { | |
1246 | transport_name = "relay-discard-mmap"; | |
1247 | } else { | |
1248 | transport_name = "relay-discard-rt-mmap"; | |
1249 | } | |
1250 | } | |
74d81a6c MD |
1251 | } else { |
1252 | return NULL; | |
1253 | } | |
c1fca457 | 1254 | break; |
74d81a6c MD |
1255 | case LTTNG_UST_CHAN_METADATA: |
1256 | if (attr->output == LTTNG_UST_MMAP) | |
1257 | transport_name = "relay-metadata-mmap"; | |
1258 | else | |
1259 | return NULL; | |
c1fca457 MD |
1260 | break; |
1261 | default: | |
74d81a6c | 1262 | transport_name = "<unknown>"; |
c1fca457 MD |
1263 | return NULL; |
1264 | } | |
74d81a6c MD |
1265 | |
1266 | transport = lttng_transport_find(transport_name); | |
1267 | if (!transport) { | |
1268 | DBG("LTTng transport %s not found\n", | |
32ce8569 | 1269 | transport_name); |
74d81a6c | 1270 | return NULL; |
7a784989 | 1271 | } |
74d81a6c MD |
1272 | |
1273 | chan = zmalloc(sizeof(*chan)); | |
1274 | if (!chan) | |
1275 | return NULL; | |
1276 | ||
1277 | chan->chan = transport->ops.channel_create(transport_name, NULL, | |
32ce8569 | 1278 | attr->subbuf_size, attr->num_subbuf, |
74d81a6c | 1279 | attr->switch_timer_interval, |
32ce8569 | 1280 | attr->read_timer_interval, |
a9ff648c | 1281 | attr->uuid, attr->chan_id, |
b2c5f61a MD |
1282 | stream_fds, nr_stream_fds, |
1283 | attr->blocking_timeout); | |
74d81a6c MD |
1284 | if (!chan->chan) { |
1285 | goto chan_error; | |
1286 | } | |
1287 | chan->chan->ops = &transport->ops; | |
1288 | memcpy(&chan->attr, attr, sizeof(chan->attr)); | |
cb7378b3 MD |
1289 | chan->wait_fd = ustctl_channel_get_wait_fd(chan); |
1290 | chan->wakeup_fd = ustctl_channel_get_wakeup_fd(chan); | |
74d81a6c MD |
1291 | return chan; |
1292 | ||
1293 | chan_error: | |
1294 | free(chan); | |
1295 | return NULL; | |
57773204 MD |
1296 | } |
1297 | ||
74d81a6c | 1298 | void ustctl_destroy_channel(struct ustctl_consumer_channel *chan) |
57773204 | 1299 | { |
b24e4e91 MD |
1300 | (void) ustctl_channel_close_wait_fd(chan); |
1301 | (void) ustctl_channel_close_wakeup_fd(chan); | |
74d81a6c MD |
1302 | chan->chan->ops->channel_destroy(chan->chan); |
1303 | free(chan); | |
1304 | } | |
1305 | ||
1306 | int ustctl_send_channel_to_sessiond(int sock, | |
1307 | struct ustctl_consumer_channel *channel) | |
1308 | { | |
1309 | struct shm_object_table *table; | |
57773204 | 1310 | |
74d81a6c MD |
1311 | table = channel->chan->handle->table; |
1312 | if (table->size <= 0) | |
9bfc503d | 1313 | return -EINVAL; |
74d81a6c MD |
1314 | return ustctl_send_channel(sock, |
1315 | channel->attr.type, | |
1316 | table->objects[0].memory_map, | |
1317 | table->objects[0].memory_map_size, | |
ff0f5728 | 1318 | channel->wakeup_fd, |
74d81a6c MD |
1319 | 0); |
1320 | } | |
9bfc503d | 1321 | |
74d81a6c MD |
1322 | int ustctl_send_stream_to_sessiond(int sock, |
1323 | struct ustctl_consumer_stream *stream) | |
1324 | { | |
1325 | if (!stream) | |
1326 | return ustctl_send_stream(sock, -1U, -1U, -1, -1, 0); | |
1327 | ||
1328 | return ustctl_send_stream(sock, | |
1329 | stream->cpu, | |
1330 | stream->memory_map_size, | |
1331 | stream->shm_fd, stream->wakeup_fd, | |
1332 | 0); | |
57773204 MD |
1333 | } |
1334 | ||
c9023c93 MD |
1335 | int ustctl_write_metadata_to_channel( |
1336 | struct ustctl_consumer_channel *channel, | |
1337 | const char *metadata_str, /* NOT null-terminated */ | |
1338 | size_t len) /* metadata length */ | |
1339 | { | |
1340 | struct lttng_ust_lib_ring_buffer_ctx ctx; | |
1341 | struct lttng_channel *chan = channel->chan; | |
1342 | const char *str = metadata_str; | |
1343 | int ret = 0, waitret; | |
1344 | size_t reserve_len, pos; | |
1345 | ||
1346 | for (pos = 0; pos < len; pos += reserve_len) { | |
1347 | reserve_len = min_t(size_t, | |
1348 | chan->ops->packet_avail_size(chan->chan, chan->handle), | |
1349 | len - pos); | |
1350 | lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL, reserve_len, | |
53569322 | 1351 | sizeof(char), -1, chan->handle, NULL); |
c9023c93 MD |
1352 | /* |
1353 | * We don't care about metadata buffer's records lost | |
1354 | * count, because we always retry here. Report error if | |
1355 | * we need to bail out after timeout or being | |
1356 | * interrupted. | |
1357 | */ | |
1358 | waitret = wait_cond_interruptible_timeout( | |
1359 | ({ | |
1360 | ret = chan->ops->event_reserve(&ctx, 0); | |
1361 | ret != -ENOBUFS || !ret; | |
1362 | }), | |
1363 | LTTNG_METADATA_TIMEOUT_MSEC); | |
1364 | if (waitret == -ETIMEDOUT || waitret == -EINTR || ret) { | |
1365 | DBG("LTTng: Failure to write metadata to buffers (%s)\n", | |
1366 | waitret == -EINTR ? "interrupted" : | |
1367 | (ret == -ENOBUFS ? "timeout" : "I/O error")); | |
1368 | if (waitret == -EINTR) | |
1369 | ret = waitret; | |
1370 | goto end; | |
1371 | } | |
1372 | chan->ops->event_write(&ctx, &str[pos], reserve_len); | |
1373 | chan->ops->event_commit(&ctx); | |
1374 | } | |
1375 | end: | |
1376 | return ret; | |
1377 | } | |
1378 | ||
3ef94b0e JD |
1379 | /* |
1380 | * Write at most one packet in the channel. | |
1381 | * Returns the number of bytes written on success, < 0 on error. | |
1382 | */ | |
1383 | ssize_t ustctl_write_one_packet_to_channel( | |
1384 | struct ustctl_consumer_channel *channel, | |
1385 | const char *metadata_str, /* NOT null-terminated */ | |
1386 | size_t len) /* metadata length */ | |
1387 | { | |
1388 | struct lttng_ust_lib_ring_buffer_ctx ctx; | |
1389 | struct lttng_channel *chan = channel->chan; | |
1390 | const char *str = metadata_str; | |
1391 | ssize_t reserve_len; | |
1392 | int ret; | |
1393 | ||
1394 | reserve_len = min_t(ssize_t, | |
1395 | chan->ops->packet_avail_size(chan->chan, chan->handle), | |
1396 | len); | |
1397 | lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL, reserve_len, | |
53569322 | 1398 | sizeof(char), -1, chan->handle, NULL); |
3ef94b0e JD |
1399 | ret = chan->ops->event_reserve(&ctx, 0); |
1400 | if (ret != 0) { | |
1401 | DBG("LTTng: event reservation failed"); | |
1402 | assert(ret < 0); | |
1403 | reserve_len = ret; | |
1404 | goto end; | |
1405 | } | |
1406 | chan->ops->event_write(&ctx, str, reserve_len); | |
1407 | chan->ops->event_commit(&ctx); | |
1408 | ||
1409 | end: | |
1410 | return reserve_len; | |
1411 | } | |
1412 | ||
ff0f5728 MD |
1413 | int ustctl_channel_close_wait_fd(struct ustctl_consumer_channel *consumer_chan) |
1414 | { | |
1415 | struct channel *chan; | |
cb7378b3 | 1416 | int ret; |
ff0f5728 MD |
1417 | |
1418 | chan = consumer_chan->chan->chan; | |
cb7378b3 | 1419 | ret = ring_buffer_channel_close_wait_fd(&chan->backend.config, |
ff0f5728 | 1420 | chan, chan->handle); |
cb7378b3 MD |
1421 | if (!ret) |
1422 | consumer_chan->wait_fd = -1; | |
1423 | return ret; | |
ff0f5728 MD |
1424 | } |
1425 | ||
1426 | int ustctl_channel_close_wakeup_fd(struct ustctl_consumer_channel *consumer_chan) | |
1427 | { | |
1428 | struct channel *chan; | |
cb7378b3 | 1429 | int ret; |
ff0f5728 MD |
1430 | |
1431 | chan = consumer_chan->chan->chan; | |
cb7378b3 | 1432 | ret = ring_buffer_channel_close_wakeup_fd(&chan->backend.config, |
ff0f5728 | 1433 | chan, chan->handle); |
cb7378b3 MD |
1434 | if (!ret) |
1435 | consumer_chan->wakeup_fd = -1; | |
1436 | return ret; | |
ff0f5728 MD |
1437 | } |
1438 | ||
74d81a6c | 1439 | int ustctl_stream_close_wait_fd(struct ustctl_consumer_stream *stream) |
5224b5c8 MD |
1440 | { |
1441 | struct channel *chan; | |
1442 | ||
74d81a6c | 1443 | chan = stream->chan->chan->chan; |
ff0f5728 | 1444 | return ring_buffer_stream_close_wait_fd(&chan->backend.config, |
74d81a6c | 1445 | chan, stream->handle, stream->cpu); |
5224b5c8 MD |
1446 | } |
1447 | ||
74d81a6c | 1448 | int ustctl_stream_close_wakeup_fd(struct ustctl_consumer_stream *stream) |
6e922b24 | 1449 | { |
66bdd22a | 1450 | struct channel *chan; |
74d81a6c MD |
1451 | |
1452 | chan = stream->chan->chan->chan; | |
ff0f5728 | 1453 | return ring_buffer_stream_close_wakeup_fd(&chan->backend.config, |
74d81a6c MD |
1454 | chan, stream->handle, stream->cpu); |
1455 | } | |
1456 | ||
1457 | struct ustctl_consumer_stream * | |
1458 | ustctl_create_stream(struct ustctl_consumer_channel *channel, | |
1459 | int cpu) | |
1460 | { | |
1461 | struct ustctl_consumer_stream *stream; | |
1462 | struct lttng_ust_shm_handle *handle; | |
1463 | struct channel *chan; | |
1464 | int shm_fd, wait_fd, wakeup_fd; | |
1465 | uint64_t memory_map_size; | |
4cfec15c | 1466 | struct lttng_ust_lib_ring_buffer *buf; |
6e922b24 MD |
1467 | int ret; |
1468 | ||
74d81a6c MD |
1469 | if (!channel) |
1470 | return NULL; | |
1471 | handle = channel->chan->handle; | |
9bfc503d MD |
1472 | if (!handle) |
1473 | return NULL; | |
1474 | ||
74d81a6c | 1475 | chan = channel->chan->chan; |
6e922b24 | 1476 | buf = channel_get_ring_buffer(&chan->backend.config, |
74d81a6c MD |
1477 | chan, cpu, handle, &shm_fd, &wait_fd, |
1478 | &wakeup_fd, &memory_map_size); | |
6e922b24 MD |
1479 | if (!buf) |
1480 | return NULL; | |
74d81a6c | 1481 | ret = lib_ring_buffer_open_read(buf, handle); |
6e922b24 MD |
1482 | if (ret) |
1483 | return NULL; | |
74d81a6c MD |
1484 | |
1485 | stream = zmalloc(sizeof(*stream)); | |
1486 | if (!stream) | |
1487 | goto alloc_error; | |
1488 | stream->handle = handle; | |
1489 | stream->buf = buf; | |
1490 | stream->chan = channel; | |
1491 | stream->shm_fd = shm_fd; | |
1492 | stream->wait_fd = wait_fd; | |
1493 | stream->wakeup_fd = wakeup_fd; | |
1494 | stream->memory_map_size = memory_map_size; | |
1495 | stream->cpu = cpu; | |
1496 | return stream; | |
1497 | ||
1498 | alloc_error: | |
1499 | return NULL; | |
1500 | } | |
1501 | ||
1502 | void ustctl_destroy_stream(struct ustctl_consumer_stream *stream) | |
1503 | { | |
1504 | struct lttng_ust_lib_ring_buffer *buf; | |
1505 | struct ustctl_consumer_channel *consumer_chan; | |
1506 | ||
1507 | assert(stream); | |
1508 | buf = stream->buf; | |
1509 | consumer_chan = stream->chan; | |
b24e4e91 MD |
1510 | (void) ustctl_stream_close_wait_fd(stream); |
1511 | (void) ustctl_stream_close_wakeup_fd(stream); | |
74d81a6c MD |
1512 | lib_ring_buffer_release_read(buf, consumer_chan->chan->handle); |
1513 | free(stream); | |
6e922b24 MD |
1514 | } |
1515 | ||
ff0f5728 MD |
1516 | int ustctl_channel_get_wait_fd(struct ustctl_consumer_channel *chan) |
1517 | { | |
1518 | if (!chan) | |
1519 | return -EINVAL; | |
1520 | return shm_get_wait_fd(chan->chan->handle, | |
1521 | &chan->chan->handle->chan._ref); | |
1522 | } | |
1523 | ||
1524 | int ustctl_channel_get_wakeup_fd(struct ustctl_consumer_channel *chan) | |
1525 | { | |
1526 | if (!chan) | |
1527 | return -EINVAL; | |
1528 | return shm_get_wakeup_fd(chan->chan->handle, | |
1529 | &chan->chan->handle->chan._ref); | |
1530 | } | |
1531 | ||
1532 | int ustctl_stream_get_wait_fd(struct ustctl_consumer_stream *stream) | |
6e922b24 | 1533 | { |
74d81a6c MD |
1534 | struct lttng_ust_lib_ring_buffer *buf; |
1535 | struct ustctl_consumer_channel *consumer_chan; | |
1536 | ||
1537 | if (!stream) | |
1538 | return -EINVAL; | |
1539 | buf = stream->buf; | |
1540 | consumer_chan = stream->chan; | |
1541 | return shm_get_wait_fd(consumer_chan->chan->handle, &buf->self._ref); | |
1542 | } | |
1543 | ||
ff0f5728 | 1544 | int ustctl_stream_get_wakeup_fd(struct ustctl_consumer_stream *stream) |
74d81a6c MD |
1545 | { |
1546 | struct lttng_ust_lib_ring_buffer *buf; | |
1547 | struct ustctl_consumer_channel *consumer_chan; | |
1548 | ||
1549 | if (!stream) | |
1550 | return -EINVAL; | |
1551 | buf = stream->buf; | |
1552 | consumer_chan = stream->chan; | |
1553 | return shm_get_wakeup_fd(consumer_chan->chan->handle, &buf->self._ref); | |
6e922b24 MD |
1554 | } |
1555 | ||
57773204 MD |
1556 | /* For mmap mode, readable without "get" operation */ |
1557 | ||
74d81a6c | 1558 | void *ustctl_get_mmap_base(struct ustctl_consumer_stream *stream) |
9095efe9 | 1559 | { |
74d81a6c MD |
1560 | struct lttng_ust_lib_ring_buffer *buf; |
1561 | struct ustctl_consumer_channel *consumer_chan; | |
1562 | ||
1563 | if (!stream) | |
9bfc503d | 1564 | return NULL; |
74d81a6c MD |
1565 | buf = stream->buf; |
1566 | consumer_chan = stream->chan; | |
1567 | return shmp(consumer_chan->chan->handle, buf->backend.memory_map); | |
9095efe9 MD |
1568 | } |
1569 | ||
57773204 | 1570 | /* returns the length to mmap. */ |
74d81a6c | 1571 | int ustctl_get_mmap_len(struct ustctl_consumer_stream *stream, |
57773204 MD |
1572 | unsigned long *len) |
1573 | { | |
74d81a6c | 1574 | struct ustctl_consumer_channel *consumer_chan; |
57773204 | 1575 | unsigned long mmap_buf_len; |
66bdd22a | 1576 | struct channel *chan; |
57773204 | 1577 | |
74d81a6c | 1578 | if (!stream) |
9bfc503d | 1579 | return -EINVAL; |
74d81a6c MD |
1580 | consumer_chan = stream->chan; |
1581 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1582 | if (chan->backend.config.output != RING_BUFFER_MMAP) |
1583 | return -EINVAL; | |
1584 | mmap_buf_len = chan->backend.buf_size; | |
1585 | if (chan->backend.extra_reader_sb) | |
1586 | mmap_buf_len += chan->backend.subbuf_size; | |
1587 | if (mmap_buf_len > INT_MAX) | |
1588 | return -EFBIG; | |
1589 | *len = mmap_buf_len; | |
1590 | return 0; | |
1591 | } | |
1592 | ||
1593 | /* returns the maximum size for sub-buffers. */ | |
74d81a6c | 1594 | int ustctl_get_max_subbuf_size(struct ustctl_consumer_stream *stream, |
57773204 MD |
1595 | unsigned long *len) |
1596 | { | |
74d81a6c | 1597 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1598 | struct channel *chan; |
57773204 | 1599 | |
74d81a6c | 1600 | if (!stream) |
9bfc503d | 1601 | return -EINVAL; |
74d81a6c MD |
1602 | consumer_chan = stream->chan; |
1603 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1604 | *len = chan->backend.subbuf_size; |
1605 | return 0; | |
1606 | } | |
1607 | ||
1608 | /* | |
1609 | * For mmap mode, operate on the current packet (between get/put or | |
1610 | * get_next/put_next). | |
1611 | */ | |
1612 | ||
1613 | /* returns the offset of the subbuffer belonging to the mmap reader. */ | |
74d81a6c MD |
1614 | int ustctl_get_mmap_read_offset(struct ustctl_consumer_stream *stream, |
1615 | unsigned long *off) | |
57773204 | 1616 | { |
66bdd22a | 1617 | struct channel *chan; |
57773204 | 1618 | unsigned long sb_bindex; |
74d81a6c MD |
1619 | struct lttng_ust_lib_ring_buffer *buf; |
1620 | struct ustctl_consumer_channel *consumer_chan; | |
34daae3e MD |
1621 | struct lttng_ust_lib_ring_buffer_backend_pages_shmp *barray_idx; |
1622 | struct lttng_ust_lib_ring_buffer_backend_pages *pages; | |
57773204 | 1623 | |
74d81a6c | 1624 | if (!stream) |
9bfc503d | 1625 | return -EINVAL; |
74d81a6c MD |
1626 | buf = stream->buf; |
1627 | consumer_chan = stream->chan; | |
1628 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1629 | if (chan->backend.config.output != RING_BUFFER_MMAP) |
1630 | return -EINVAL; | |
1631 | sb_bindex = subbuffer_id_get_index(&chan->backend.config, | |
32ce8569 | 1632 | buf->backend.buf_rsb.id); |
34daae3e MD |
1633 | barray_idx = shmp_index(consumer_chan->chan->handle, buf->backend.array, |
1634 | sb_bindex); | |
1635 | if (!barray_idx) | |
1636 | return -EINVAL; | |
1637 | pages = shmp(consumer_chan->chan->handle, barray_idx->shmp); | |
1638 | if (!pages) | |
1639 | return -EINVAL; | |
1640 | *off = pages->mmap_offset; | |
57773204 MD |
1641 | return 0; |
1642 | } | |
1643 | ||
1644 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
74d81a6c MD |
1645 | int ustctl_get_subbuf_size(struct ustctl_consumer_stream *stream, |
1646 | unsigned long *len) | |
57773204 | 1647 | { |
74d81a6c | 1648 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1649 | struct channel *chan; |
74d81a6c | 1650 | struct lttng_ust_lib_ring_buffer *buf; |
57773204 | 1651 | |
74d81a6c | 1652 | if (!stream) |
9bfc503d MD |
1653 | return -EINVAL; |
1654 | ||
74d81a6c MD |
1655 | buf = stream->buf; |
1656 | consumer_chan = stream->chan; | |
1657 | chan = consumer_chan->chan->chan; | |
57773204 | 1658 | *len = lib_ring_buffer_get_read_data_size(&chan->backend.config, buf, |
74d81a6c | 1659 | consumer_chan->chan->handle); |
57773204 MD |
1660 | return 0; |
1661 | } | |
1662 | ||
1663 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
74d81a6c MD |
1664 | int ustctl_get_padded_subbuf_size(struct ustctl_consumer_stream *stream, |
1665 | unsigned long *len) | |
57773204 | 1666 | { |
74d81a6c | 1667 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1668 | struct channel *chan; |
74d81a6c | 1669 | struct lttng_ust_lib_ring_buffer *buf; |
57773204 | 1670 | |
74d81a6c | 1671 | if (!stream) |
9bfc503d | 1672 | return -EINVAL; |
74d81a6c MD |
1673 | buf = stream->buf; |
1674 | consumer_chan = stream->chan; | |
1675 | chan = consumer_chan->chan->chan; | |
57773204 | 1676 | *len = lib_ring_buffer_get_read_data_size(&chan->backend.config, buf, |
74d81a6c | 1677 | consumer_chan->chan->handle); |
b72687b8 | 1678 | *len = LTTNG_UST_PAGE_ALIGN(*len); |
57773204 MD |
1679 | return 0; |
1680 | } | |
1681 | ||
1682 | /* Get exclusive read access to the next sub-buffer that can be read. */ | |
74d81a6c | 1683 | int ustctl_get_next_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1684 | { |
74d81a6c MD |
1685 | struct lttng_ust_lib_ring_buffer *buf; |
1686 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1687 | |
74d81a6c MD |
1688 | if (!stream) |
1689 | return -EINVAL; | |
1690 | buf = stream->buf; | |
1691 | consumer_chan = stream->chan; | |
1692 | return lib_ring_buffer_get_next_subbuf(buf, | |
1693 | consumer_chan->chan->handle); | |
57773204 MD |
1694 | } |
1695 | ||
1696 | ||
1697 | /* Release exclusive sub-buffer access, move consumer forward. */ | |
74d81a6c | 1698 | int ustctl_put_next_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1699 | { |
74d81a6c MD |
1700 | struct lttng_ust_lib_ring_buffer *buf; |
1701 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1702 | |
74d81a6c MD |
1703 | if (!stream) |
1704 | return -EINVAL; | |
1705 | buf = stream->buf; | |
1706 | consumer_chan = stream->chan; | |
1707 | lib_ring_buffer_put_next_subbuf(buf, consumer_chan->chan->handle); | |
57773204 MD |
1708 | return 0; |
1709 | } | |
1710 | ||
1711 | /* snapshot */ | |
1712 | ||
1713 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
74d81a6c | 1714 | int ustctl_snapshot(struct ustctl_consumer_stream *stream) |
57773204 | 1715 | { |
74d81a6c MD |
1716 | struct lttng_ust_lib_ring_buffer *buf; |
1717 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1718 | |
74d81a6c MD |
1719 | if (!stream) |
1720 | return -EINVAL; | |
1721 | buf = stream->buf; | |
1722 | consumer_chan = stream->chan; | |
57773204 | 1723 | return lib_ring_buffer_snapshot(buf, &buf->cons_snapshot, |
74d81a6c | 1724 | &buf->prod_snapshot, consumer_chan->chan->handle); |
57773204 MD |
1725 | } |
1726 | ||
f45930b7 JG |
1727 | /* |
1728 | * Get a snapshot of the current ring buffer producer and consumer positions | |
1729 | * even if the consumed and produced positions are contained within the same | |
1730 | * subbuffer. | |
1731 | */ | |
1732 | int ustctl_snapshot_sample_positions(struct ustctl_consumer_stream *stream) | |
1733 | { | |
1734 | struct lttng_ust_lib_ring_buffer *buf; | |
1735 | struct ustctl_consumer_channel *consumer_chan; | |
1736 | ||
1737 | if (!stream) | |
1738 | return -EINVAL; | |
1739 | buf = stream->buf; | |
1740 | consumer_chan = stream->chan; | |
1741 | return lib_ring_buffer_snapshot_sample_positions(buf, | |
1742 | &buf->cons_snapshot, &buf->prod_snapshot, | |
1743 | consumer_chan->chan->handle); | |
1744 | } | |
1745 | ||
57773204 | 1746 | /* Get the consumer position (iteration start) */ |
74d81a6c MD |
1747 | int ustctl_snapshot_get_consumed(struct ustctl_consumer_stream *stream, |
1748 | unsigned long *pos) | |
57773204 | 1749 | { |
74d81a6c | 1750 | struct lttng_ust_lib_ring_buffer *buf; |
9bfc503d | 1751 | |
74d81a6c MD |
1752 | if (!stream) |
1753 | return -EINVAL; | |
1754 | buf = stream->buf; | |
57773204 MD |
1755 | *pos = buf->cons_snapshot; |
1756 | return 0; | |
1757 | } | |
1758 | ||
1759 | /* Get the producer position (iteration end) */ | |
74d81a6c MD |
1760 | int ustctl_snapshot_get_produced(struct ustctl_consumer_stream *stream, |
1761 | unsigned long *pos) | |
57773204 | 1762 | { |
74d81a6c | 1763 | struct lttng_ust_lib_ring_buffer *buf; |
9bfc503d | 1764 | |
74d81a6c MD |
1765 | if (!stream) |
1766 | return -EINVAL; | |
1767 | buf = stream->buf; | |
57773204 MD |
1768 | *pos = buf->prod_snapshot; |
1769 | return 0; | |
1770 | } | |
1771 | ||
1772 | /* Get exclusive read access to the specified sub-buffer position */ | |
74d81a6c MD |
1773 | int ustctl_get_subbuf(struct ustctl_consumer_stream *stream, |
1774 | unsigned long *pos) | |
57773204 | 1775 | { |
74d81a6c MD |
1776 | struct lttng_ust_lib_ring_buffer *buf; |
1777 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1778 | |
74d81a6c MD |
1779 | if (!stream) |
1780 | return -EINVAL; | |
1781 | buf = stream->buf; | |
1782 | consumer_chan = stream->chan; | |
1783 | return lib_ring_buffer_get_subbuf(buf, *pos, | |
1784 | consumer_chan->chan->handle); | |
57773204 MD |
1785 | } |
1786 | ||
1787 | /* Release exclusive sub-buffer access */ | |
74d81a6c | 1788 | int ustctl_put_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1789 | { |
74d81a6c MD |
1790 | struct lttng_ust_lib_ring_buffer *buf; |
1791 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1792 | |
74d81a6c MD |
1793 | if (!stream) |
1794 | return -EINVAL; | |
1795 | buf = stream->buf; | |
1796 | consumer_chan = stream->chan; | |
1797 | lib_ring_buffer_put_subbuf(buf, consumer_chan->chan->handle); | |
57773204 MD |
1798 | return 0; |
1799 | } | |
1800 | ||
74d81a6c | 1801 | void ustctl_flush_buffer(struct ustctl_consumer_stream *stream, |
b52190f2 | 1802 | int producer_active) |
57773204 | 1803 | { |
74d81a6c MD |
1804 | struct lttng_ust_lib_ring_buffer *buf; |
1805 | struct ustctl_consumer_channel *consumer_chan; | |
1806 | ||
1807 | assert(stream); | |
1808 | buf = stream->buf; | |
1809 | consumer_chan = stream->chan; | |
b52190f2 MD |
1810 | lib_ring_buffer_switch_slow(buf, |
1811 | producer_active ? SWITCH_ACTIVE : SWITCH_FLUSH, | |
74d81a6c MD |
1812 | consumer_chan->chan->handle); |
1813 | } | |
1814 | ||
beca55a1 MD |
1815 | void ustctl_clear_buffer(struct ustctl_consumer_stream *stream) |
1816 | { | |
1817 | struct lttng_ust_lib_ring_buffer *buf; | |
1818 | struct ustctl_consumer_channel *consumer_chan; | |
1819 | ||
1820 | assert(stream); | |
1821 | buf = stream->buf; | |
1822 | consumer_chan = stream->chan; | |
1823 | lib_ring_buffer_switch_slow(buf, SWITCH_ACTIVE, | |
1824 | consumer_chan->chan->handle); | |
1825 | lib_ring_buffer_clear_reader(buf, consumer_chan->chan->handle); | |
1826 | } | |
1827 | ||
b2f3252a JD |
1828 | static |
1829 | struct lttng_ust_client_lib_ring_buffer_client_cb *get_client_cb( | |
1830 | struct lttng_ust_lib_ring_buffer *buf, | |
1831 | struct lttng_ust_shm_handle *handle) | |
1832 | { | |
1833 | struct channel *chan; | |
1834 | const struct lttng_ust_lib_ring_buffer_config *config; | |
1835 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1836 | ||
1837 | chan = shmp(handle, buf->backend.chan); | |
34daae3e MD |
1838 | if (!chan) |
1839 | return NULL; | |
b2f3252a JD |
1840 | config = &chan->backend.config; |
1841 | if (!config->cb_ptr) | |
1842 | return NULL; | |
1843 | client_cb = caa_container_of(config->cb_ptr, | |
1844 | struct lttng_ust_client_lib_ring_buffer_client_cb, | |
1845 | parent); | |
1846 | return client_cb; | |
1847 | } | |
1848 | ||
1849 | int ustctl_get_timestamp_begin(struct ustctl_consumer_stream *stream, | |
1850 | uint64_t *timestamp_begin) | |
1851 | { | |
1852 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1853 | struct lttng_ust_lib_ring_buffer *buf; |
1854 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1855 | |
1856 | if (!stream || !timestamp_begin) | |
1857 | return -EINVAL; | |
e1919a41 MD |
1858 | buf = stream->buf; |
1859 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1860 | client_cb = get_client_cb(buf, handle); |
1861 | if (!client_cb) | |
1862 | return -ENOSYS; | |
1863 | return client_cb->timestamp_begin(buf, handle, timestamp_begin); | |
1864 | } | |
1865 | ||
1866 | int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream, | |
1867 | uint64_t *timestamp_end) | |
1868 | { | |
1869 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1870 | struct lttng_ust_lib_ring_buffer *buf; |
1871 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1872 | |
1873 | if (!stream || !timestamp_end) | |
1874 | return -EINVAL; | |
e1919a41 MD |
1875 | buf = stream->buf; |
1876 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1877 | client_cb = get_client_cb(buf, handle); |
1878 | if (!client_cb) | |
1879 | return -ENOSYS; | |
1880 | return client_cb->timestamp_end(buf, handle, timestamp_end); | |
1881 | } | |
1882 | ||
1883 | int ustctl_get_events_discarded(struct ustctl_consumer_stream *stream, | |
1884 | uint64_t *events_discarded) | |
1885 | { | |
1886 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1887 | struct lttng_ust_lib_ring_buffer *buf; |
1888 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1889 | |
1890 | if (!stream || !events_discarded) | |
1891 | return -EINVAL; | |
e1919a41 MD |
1892 | buf = stream->buf; |
1893 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1894 | client_cb = get_client_cb(buf, handle); |
1895 | if (!client_cb) | |
1896 | return -ENOSYS; | |
1897 | return client_cb->events_discarded(buf, handle, events_discarded); | |
1898 | } | |
1899 | ||
1900 | int ustctl_get_content_size(struct ustctl_consumer_stream *stream, | |
1901 | uint64_t *content_size) | |
1902 | { | |
1903 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1904 | struct lttng_ust_lib_ring_buffer *buf; |
1905 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1906 | |
1907 | if (!stream || !content_size) | |
1908 | return -EINVAL; | |
e1919a41 MD |
1909 | buf = stream->buf; |
1910 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1911 | client_cb = get_client_cb(buf, handle); |
1912 | if (!client_cb) | |
1913 | return -ENOSYS; | |
1914 | return client_cb->content_size(buf, handle, content_size); | |
1915 | } | |
1916 | ||
1917 | int ustctl_get_packet_size(struct ustctl_consumer_stream *stream, | |
1918 | uint64_t *packet_size) | |
1919 | { | |
1920 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1921 | struct lttng_ust_lib_ring_buffer *buf; |
1922 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1923 | |
1924 | if (!stream || !packet_size) | |
1925 | return -EINVAL; | |
e1919a41 MD |
1926 | buf = stream->buf; |
1927 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1928 | client_cb = get_client_cb(buf, handle); |
1929 | if (!client_cb) | |
1930 | return -ENOSYS; | |
1931 | return client_cb->packet_size(buf, handle, packet_size); | |
1932 | } | |
1933 | ||
1934 | int ustctl_get_stream_id(struct ustctl_consumer_stream *stream, | |
1935 | uint64_t *stream_id) | |
1936 | { | |
1937 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1938 | struct lttng_ust_lib_ring_buffer *buf; |
1939 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1940 | |
1941 | if (!stream || !stream_id) | |
1942 | return -EINVAL; | |
e1919a41 MD |
1943 | buf = stream->buf; |
1944 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1945 | client_cb = get_client_cb(buf, handle); |
1946 | if (!client_cb) | |
1947 | return -ENOSYS; | |
1948 | return client_cb->stream_id(buf, handle, stream_id); | |
1949 | } | |
1950 | ||
fca361e8 JD |
1951 | int ustctl_get_current_timestamp(struct ustctl_consumer_stream *stream, |
1952 | uint64_t *ts) | |
1953 | { | |
1954 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1955 | struct lttng_ust_lib_ring_buffer *buf; |
1956 | struct lttng_ust_shm_handle *handle; | |
fca361e8 JD |
1957 | |
1958 | if (!stream || !ts) | |
1959 | return -EINVAL; | |
e1919a41 MD |
1960 | buf = stream->buf; |
1961 | handle = stream->chan->chan->handle; | |
fca361e8 JD |
1962 | client_cb = get_client_cb(buf, handle); |
1963 | if (!client_cb || !client_cb->current_timestamp) | |
1964 | return -ENOSYS; | |
1965 | return client_cb->current_timestamp(buf, handle, ts); | |
1966 | } | |
1967 | ||
1ff31389 JD |
1968 | int ustctl_get_sequence_number(struct ustctl_consumer_stream *stream, |
1969 | uint64_t *seq) | |
1970 | { | |
1971 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1972 | struct lttng_ust_lib_ring_buffer *buf; | |
1973 | struct lttng_ust_shm_handle *handle; | |
1974 | ||
1975 | if (!stream || !seq) | |
1976 | return -EINVAL; | |
1977 | buf = stream->buf; | |
1978 | handle = stream->chan->chan->handle; | |
1979 | client_cb = get_client_cb(buf, handle); | |
1980 | if (!client_cb || !client_cb->sequence_number) | |
1981 | return -ENOSYS; | |
1982 | return client_cb->sequence_number(buf, handle, seq); | |
1983 | } | |
1984 | ||
45a00b05 JD |
1985 | int ustctl_get_instance_id(struct ustctl_consumer_stream *stream, |
1986 | uint64_t *id) | |
1987 | { | |
1988 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1989 | struct lttng_ust_lib_ring_buffer *buf; | |
1990 | struct lttng_ust_shm_handle *handle; | |
1991 | ||
1992 | if (!stream || !id) | |
1993 | return -EINVAL; | |
1994 | buf = stream->buf; | |
1995 | handle = stream->chan->chan->handle; | |
1996 | client_cb = get_client_cb(buf, handle); | |
1997 | if (!client_cb) | |
1998 | return -ENOSYS; | |
1999 | return client_cb->instance_id(buf, handle, id); | |
2000 | } | |
2001 | ||
bd8c1787 | 2002 | #ifdef HAVE_PERF_EVENT |
57201bb3 MD |
2003 | |
2004 | int ustctl_has_perf_counters(void) | |
2005 | { | |
2006 | return 1; | |
2007 | } | |
2008 | ||
2009 | #else | |
2010 | ||
2011 | int ustctl_has_perf_counters(void) | |
2012 | { | |
2013 | return 0; | |
2014 | } | |
2015 | ||
2016 | #endif | |
2017 | ||
a834901f MD |
2018 | #ifdef __linux__ |
2019 | /* | |
2020 | * Override application pid/uid/gid with unix socket credentials. If | |
2021 | * the application announced a pid matching our view, it means it is | |
2022 | * within the same pid namespace, so expose the ppid provided by the | |
2023 | * application. | |
2024 | */ | |
2025 | static | |
2026 | int get_cred(int sock, | |
2027 | const struct ustctl_reg_msg *reg_msg, | |
2028 | uint32_t *pid, | |
2029 | uint32_t *ppid, | |
2030 | uint32_t *uid, | |
2031 | uint32_t *gid) | |
2032 | { | |
2033 | struct ucred ucred; | |
2034 | socklen_t ucred_len = sizeof(struct ucred); | |
2035 | int ret; | |
2036 | ||
2037 | ret = getsockopt(sock, SOL_SOCKET, SO_PEERCRED, &ucred, &ucred_len); | |
2038 | if (ret) { | |
2039 | return -LTTNG_UST_ERR_PEERCRED; | |
2040 | } | |
2041 | DBG("Unix socket peercred [ pid: %u, uid: %u, gid: %u ], " | |
2042 | "application registered claiming [ pid: %u, ppid: %u, uid: %u, gid: %u ]", | |
2043 | ucred.pid, ucred.uid, ucred.gid, | |
2044 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); | |
2045 | if (!ucred.pid) { | |
2046 | ERR("Unix socket credential pid=0. Refusing application in distinct, non-nested pid namespace."); | |
2047 | return -LTTNG_UST_ERR_PEERCRED_PID; | |
2048 | } | |
2049 | *pid = ucred.pid; | |
2050 | *uid = ucred.uid; | |
2051 | *gid = ucred.gid; | |
2052 | if (ucred.pid == reg_msg->pid) { | |
2053 | *ppid = reg_msg->ppid; | |
2054 | } else { | |
2055 | *ppid = 0; | |
2056 | } | |
2057 | return 0; | |
2058 | } | |
2059 | #elif defined(__FreeBSD__) | |
2060 | #include <sys/ucred.h> | |
e494a9cd | 2061 | #include <sys/un.h> |
a834901f MD |
2062 | |
2063 | /* | |
2064 | * Override application uid/gid with unix socket credentials. Use the | |
2065 | * first group of the cr_groups. | |
2066 | * Use the pid and ppid provided by the application on registration. | |
2067 | */ | |
2068 | static | |
2069 | int get_cred(int sock, | |
2070 | const struct ustctl_reg_msg *reg_msg, | |
2071 | uint32_t *pid, | |
2072 | uint32_t *ppid, | |
2073 | uint32_t *uid, | |
2074 | uint32_t *gid) | |
2075 | { | |
2076 | struct xucred xucred; | |
2077 | socklen_t xucred_len = sizeof(struct xucred); | |
2078 | int ret; | |
2079 | ||
2080 | ret = getsockopt(sock, SOL_SOCKET, LOCAL_PEERCRED, &xucred, &xucred_len); | |
2081 | if (ret) { | |
2082 | return -LTTNG_UST_ERR_PEERCRED; | |
2083 | } | |
2084 | if (xucred.cr_version != XUCRED_VERSION || xucred.cr_ngroups < 1) { | |
2085 | return -LTTNG_UST_ERR_PEERCRED; | |
2086 | } | |
2087 | DBG("Unix socket peercred [ uid: %u, gid: %u ], " | |
2088 | "application registered claiming [ pid: %d, ppid: %d, uid: %u, gid: %u ]", | |
e494a9cd | 2089 | xucred.cr_uid, xucred.cr_groups[0], |
a834901f MD |
2090 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); |
2091 | *pid = reg_msg->pid; | |
2092 | *ppid = reg_msg->ppid; | |
e494a9cd | 2093 | *uid = xucred.cr_uid; |
a834901f MD |
2094 | *gid = xucred.cr_groups[0]; |
2095 | return 0; | |
2096 | } | |
2097 | #else | |
2098 | #warning "Using insecure fallback: trusting user id provided by registered applications. Please consider implementing use of unix socket credentials on your platform." | |
2099 | static | |
2100 | int get_cred(int sock, | |
2101 | const struct ustctl_reg_msg *reg_msg, | |
2102 | uint32_t *pid, | |
2103 | uint32_t *ppid, | |
2104 | uint32_t *uid, | |
2105 | uint32_t *gid) | |
2106 | { | |
2107 | DBG("Application registered claiming [ pid: %u, ppid: %d, uid: %u, gid: %u ]", | |
2108 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); | |
2109 | *pid = reg_msg->pid; | |
2110 | *ppid = reg_msg->ppid; | |
2111 | *uid = reg_msg->uid; | |
2112 | *gid = reg_msg->gid; | |
2113 | return 0; | |
2114 | } | |
2115 | #endif | |
2116 | ||
32ce8569 MD |
2117 | /* |
2118 | * Returns 0 on success, negative error value on error. | |
2119 | */ | |
2120 | int ustctl_recv_reg_msg(int sock, | |
2121 | enum ustctl_socket_type *type, | |
2122 | uint32_t *major, | |
2123 | uint32_t *minor, | |
2124 | uint32_t *pid, | |
2125 | uint32_t *ppid, | |
2126 | uint32_t *uid, | |
2127 | uint32_t *gid, | |
2128 | uint32_t *bits_per_long, | |
2129 | uint32_t *uint8_t_alignment, | |
2130 | uint32_t *uint16_t_alignment, | |
2131 | uint32_t *uint32_t_alignment, | |
2132 | uint32_t *uint64_t_alignment, | |
2133 | uint32_t *long_alignment, | |
2134 | int *byte_order, | |
2135 | char *name) | |
2136 | { | |
2137 | ssize_t len; | |
2138 | struct ustctl_reg_msg reg_msg; | |
2139 | ||
2140 | len = ustcomm_recv_unix_sock(sock, ®_msg, sizeof(reg_msg)); | |
2141 | if (len > 0 && len != sizeof(reg_msg)) | |
2142 | return -EIO; | |
2143 | if (len == 0) | |
2144 | return -EPIPE; | |
2145 | if (len < 0) | |
2146 | return len; | |
2147 | ||
2148 | if (reg_msg.magic == LTTNG_UST_COMM_MAGIC) { | |
2149 | *byte_order = BYTE_ORDER == BIG_ENDIAN ? | |
2150 | BIG_ENDIAN : LITTLE_ENDIAN; | |
2151 | } else if (reg_msg.magic == bswap_32(LTTNG_UST_COMM_MAGIC)) { | |
2152 | *byte_order = BYTE_ORDER == BIG_ENDIAN ? | |
2153 | LITTLE_ENDIAN : BIG_ENDIAN; | |
2154 | } else { | |
2155 | return -LTTNG_UST_ERR_INVAL_MAGIC; | |
2156 | } | |
2157 | switch (reg_msg.socket_type) { | |
2158 | case 0: *type = USTCTL_SOCKET_CMD; | |
2159 | break; | |
2160 | case 1: *type = USTCTL_SOCKET_NOTIFY; | |
2161 | break; | |
2162 | default: | |
2163 | return -LTTNG_UST_ERR_INVAL_SOCKET_TYPE; | |
2164 | } | |
2165 | *major = reg_msg.major; | |
2166 | *minor = reg_msg.minor; | |
32ce8569 MD |
2167 | *bits_per_long = reg_msg.bits_per_long; |
2168 | *uint8_t_alignment = reg_msg.uint8_t_alignment; | |
2169 | *uint16_t_alignment = reg_msg.uint16_t_alignment; | |
2170 | *uint32_t_alignment = reg_msg.uint32_t_alignment; | |
2171 | *uint64_t_alignment = reg_msg.uint64_t_alignment; | |
2172 | *long_alignment = reg_msg.long_alignment; | |
2173 | memcpy(name, reg_msg.name, LTTNG_UST_ABI_PROCNAME_LEN); | |
6a359b8a MD |
2174 | if (reg_msg.major < LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE || |
2175 | reg_msg.major > LTTNG_UST_ABI_MAJOR_VERSION) { | |
32ce8569 MD |
2176 | return -LTTNG_UST_ERR_UNSUP_MAJOR; |
2177 | } | |
a834901f | 2178 | return get_cred(sock, ®_msg, pid, ppid, uid, gid); |
32ce8569 MD |
2179 | } |
2180 | ||
2181 | int ustctl_recv_notify(int sock, enum ustctl_notify_cmd *notify_cmd) | |
2182 | { | |
2183 | struct ustcomm_notify_hdr header; | |
2184 | ssize_t len; | |
2185 | ||
2186 | len = ustcomm_recv_unix_sock(sock, &header, sizeof(header)); | |
2187 | if (len > 0 && len != sizeof(header)) | |
2188 | return -EIO; | |
2189 | if (len == 0) | |
2190 | return -EPIPE; | |
2191 | if (len < 0) | |
2192 | return len; | |
2193 | switch (header.notify_cmd) { | |
2194 | case 0: | |
2195 | *notify_cmd = USTCTL_NOTIFY_CMD_EVENT; | |
2196 | break; | |
2197 | case 1: | |
2198 | *notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL; | |
2199 | break; | |
c785c634 MD |
2200 | case 2: |
2201 | *notify_cmd = USTCTL_NOTIFY_CMD_ENUM; | |
2202 | break; | |
32ce8569 MD |
2203 | default: |
2204 | return -EINVAL; | |
2205 | } | |
2206 | return 0; | |
2207 | } | |
2208 | ||
2209 | /* | |
2210 | * Returns 0 on success, negative error value on error. | |
2211 | */ | |
2212 | int ustctl_recv_register_event(int sock, | |
2213 | int *session_objd, | |
2214 | int *channel_objd, | |
2215 | char *event_name, | |
2216 | int *loglevel, | |
2217 | char **signature, | |
2218 | size_t *nr_fields, | |
2219 | struct ustctl_field **fields, | |
2220 | char **model_emf_uri) | |
2221 | { | |
2222 | ssize_t len; | |
2223 | struct ustcomm_notify_event_msg msg; | |
2224 | size_t signature_len, fields_len, model_emf_uri_len; | |
2225 | char *a_sign = NULL, *a_model_emf_uri = NULL; | |
2226 | struct ustctl_field *a_fields = NULL; | |
2227 | ||
2228 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2229 | if (len > 0 && len != sizeof(msg)) | |
2230 | return -EIO; | |
2231 | if (len == 0) | |
2232 | return -EPIPE; | |
2233 | if (len < 0) | |
2234 | return len; | |
2235 | ||
2236 | *session_objd = msg.session_objd; | |
2237 | *channel_objd = msg.channel_objd; | |
2238 | strncpy(event_name, msg.event_name, LTTNG_UST_SYM_NAME_LEN); | |
2239 | event_name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
2240 | *loglevel = msg.loglevel; | |
2241 | signature_len = msg.signature_len; | |
2242 | fields_len = msg.fields_len; | |
2243 | ||
2244 | if (fields_len % sizeof(*a_fields) != 0) { | |
2245 | return -EINVAL; | |
2246 | } | |
2247 | ||
2248 | model_emf_uri_len = msg.model_emf_uri_len; | |
2249 | ||
2250 | /* recv signature. contains at least \0. */ | |
2251 | a_sign = zmalloc(signature_len); | |
2252 | if (!a_sign) | |
2253 | return -ENOMEM; | |
2254 | len = ustcomm_recv_unix_sock(sock, a_sign, signature_len); | |
2255 | if (len > 0 && len != signature_len) { | |
2256 | len = -EIO; | |
2257 | goto signature_error; | |
2258 | } | |
2259 | if (len == 0) { | |
2260 | len = -EPIPE; | |
2261 | goto signature_error; | |
2262 | } | |
2263 | if (len < 0) { | |
2264 | goto signature_error; | |
2265 | } | |
2266 | /* Enforce end of string */ | |
111198c2 | 2267 | a_sign[signature_len - 1] = '\0'; |
32ce8569 MD |
2268 | |
2269 | /* recv fields */ | |
2270 | if (fields_len) { | |
2271 | a_fields = zmalloc(fields_len); | |
2272 | if (!a_fields) { | |
2273 | len = -ENOMEM; | |
2274 | goto signature_error; | |
2275 | } | |
2276 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2277 | if (len > 0 && len != fields_len) { | |
2278 | len = -EIO; | |
2279 | goto fields_error; | |
2280 | } | |
2281 | if (len == 0) { | |
2282 | len = -EPIPE; | |
2283 | goto fields_error; | |
2284 | } | |
2285 | if (len < 0) { | |
2286 | goto fields_error; | |
2287 | } | |
2288 | } | |
2289 | ||
2290 | if (model_emf_uri_len) { | |
2291 | /* recv model_emf_uri_len */ | |
2292 | a_model_emf_uri = zmalloc(model_emf_uri_len); | |
2293 | if (!a_model_emf_uri) { | |
2294 | len = -ENOMEM; | |
2295 | goto fields_error; | |
2296 | } | |
2297 | len = ustcomm_recv_unix_sock(sock, a_model_emf_uri, | |
2298 | model_emf_uri_len); | |
2299 | if (len > 0 && len != model_emf_uri_len) { | |
2300 | len = -EIO; | |
2301 | goto model_error; | |
2302 | } | |
2303 | if (len == 0) { | |
2304 | len = -EPIPE; | |
2305 | goto model_error; | |
2306 | } | |
2307 | if (len < 0) { | |
2308 | goto model_error; | |
2309 | } | |
2310 | /* Enforce end of string */ | |
2311 | a_model_emf_uri[model_emf_uri_len - 1] = '\0'; | |
2312 | } | |
2313 | ||
2314 | *signature = a_sign; | |
2315 | *nr_fields = fields_len / sizeof(*a_fields); | |
2316 | *fields = a_fields; | |
2317 | *model_emf_uri = a_model_emf_uri; | |
2318 | ||
2319 | return 0; | |
2320 | ||
2321 | model_error: | |
2322 | free(a_model_emf_uri); | |
2323 | fields_error: | |
2324 | free(a_fields); | |
2325 | signature_error: | |
2326 | free(a_sign); | |
2327 | return len; | |
2328 | } | |
2329 | ||
2330 | /* | |
2331 | * Returns 0 on success, negative error value on error. | |
2332 | */ | |
2333 | int ustctl_reply_register_event(int sock, | |
2334 | uint32_t id, | |
2335 | int ret_code) | |
2336 | { | |
2337 | ssize_t len; | |
2338 | struct { | |
2339 | struct ustcomm_notify_hdr header; | |
2340 | struct ustcomm_notify_event_reply r; | |
2341 | } reply; | |
2342 | ||
2343 | memset(&reply, 0, sizeof(reply)); | |
2344 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_EVENT; | |
2345 | reply.r.ret_code = ret_code; | |
2346 | reply.r.event_id = id; | |
2347 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2348 | if (len > 0 && len != sizeof(reply)) | |
2349 | return -EIO; | |
2350 | if (len < 0) | |
2351 | return len; | |
2352 | return 0; | |
2353 | } | |
2354 | ||
c785c634 MD |
2355 | /* |
2356 | * Returns 0 on success, negative UST or system error value on error. | |
2357 | */ | |
2358 | int ustctl_recv_register_enum(int sock, | |
2359 | int *session_objd, | |
2360 | char *enum_name, | |
2361 | struct ustctl_enum_entry **entries, | |
2362 | size_t *nr_entries) | |
2363 | { | |
2364 | ssize_t len; | |
2365 | struct ustcomm_notify_enum_msg msg; | |
2366 | size_t entries_len; | |
2367 | struct ustctl_enum_entry *a_entries = NULL; | |
2368 | ||
2369 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2370 | if (len > 0 && len != sizeof(msg)) | |
2371 | return -EIO; | |
2372 | if (len == 0) | |
2373 | return -EPIPE; | |
2374 | if (len < 0) | |
2375 | return len; | |
2376 | ||
2377 | *session_objd = msg.session_objd; | |
2378 | strncpy(enum_name, msg.enum_name, LTTNG_UST_SYM_NAME_LEN); | |
2379 | enum_name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
2380 | entries_len = msg.entries_len; | |
2381 | ||
2382 | if (entries_len % sizeof(*a_entries) != 0) { | |
2383 | return -EINVAL; | |
2384 | } | |
2385 | ||
2386 | /* recv entries */ | |
2387 | if (entries_len) { | |
2388 | a_entries = zmalloc(entries_len); | |
2389 | if (!a_entries) | |
2390 | return -ENOMEM; | |
2391 | len = ustcomm_recv_unix_sock(sock, a_entries, entries_len); | |
2392 | if (len > 0 && len != entries_len) { | |
2393 | len = -EIO; | |
2394 | goto entries_error; | |
2395 | } | |
2396 | if (len == 0) { | |
2397 | len = -EPIPE; | |
2398 | goto entries_error; | |
2399 | } | |
2400 | if (len < 0) { | |
2401 | goto entries_error; | |
2402 | } | |
2403 | } | |
2404 | *nr_entries = entries_len / sizeof(*a_entries); | |
2405 | *entries = a_entries; | |
2406 | ||
2407 | return 0; | |
2408 | ||
2409 | entries_error: | |
2410 | free(a_entries); | |
2411 | return len; | |
2412 | } | |
2413 | ||
2414 | /* | |
2415 | * Returns 0 on success, negative error value on error. | |
2416 | */ | |
2417 | int ustctl_reply_register_enum(int sock, | |
2418 | uint64_t id, | |
2419 | int ret_code) | |
2420 | { | |
2421 | ssize_t len; | |
2422 | struct { | |
2423 | struct ustcomm_notify_hdr header; | |
2424 | struct ustcomm_notify_enum_reply r; | |
2425 | } reply; | |
2426 | ||
2427 | memset(&reply, 0, sizeof(reply)); | |
2428 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_ENUM; | |
2429 | reply.r.ret_code = ret_code; | |
2430 | reply.r.enum_id = id; | |
2431 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2432 | if (len > 0 && len != sizeof(reply)) | |
2433 | return -EIO; | |
2434 | if (len < 0) | |
2435 | return len; | |
2436 | return 0; | |
2437 | } | |
2438 | ||
32ce8569 MD |
2439 | /* |
2440 | * Returns 0 on success, negative UST or system error value on error. | |
2441 | */ | |
2442 | int ustctl_recv_register_channel(int sock, | |
2443 | int *session_objd, /* session descriptor (output) */ | |
2444 | int *channel_objd, /* channel descriptor (output) */ | |
2445 | size_t *nr_fields, | |
2446 | struct ustctl_field **fields) | |
2447 | { | |
2448 | ssize_t len; | |
2449 | struct ustcomm_notify_channel_msg msg; | |
2450 | size_t fields_len; | |
2451 | struct ustctl_field *a_fields; | |
2452 | ||
2453 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2454 | if (len > 0 && len != sizeof(msg)) | |
2455 | return -EIO; | |
2456 | if (len == 0) | |
2457 | return -EPIPE; | |
2458 | if (len < 0) | |
2459 | return len; | |
2460 | ||
2461 | *session_objd = msg.session_objd; | |
2462 | *channel_objd = msg.channel_objd; | |
2463 | fields_len = msg.ctx_fields_len; | |
2464 | ||
2465 | if (fields_len % sizeof(*a_fields) != 0) { | |
2466 | return -EINVAL; | |
2467 | } | |
2468 | ||
2469 | /* recv fields */ | |
2470 | if (fields_len) { | |
2471 | a_fields = zmalloc(fields_len); | |
2472 | if (!a_fields) { | |
2473 | len = -ENOMEM; | |
2474 | goto alloc_error; | |
2475 | } | |
2476 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2477 | if (len > 0 && len != fields_len) { | |
2478 | len = -EIO; | |
2479 | goto fields_error; | |
2480 | } | |
2481 | if (len == 0) { | |
2482 | len = -EPIPE; | |
2483 | goto fields_error; | |
2484 | } | |
2485 | if (len < 0) { | |
2486 | goto fields_error; | |
2487 | } | |
2488 | *fields = a_fields; | |
2489 | } else { | |
2490 | *fields = NULL; | |
2491 | } | |
2492 | *nr_fields = fields_len / sizeof(*a_fields); | |
2493 | return 0; | |
2494 | ||
2495 | fields_error: | |
2496 | free(a_fields); | |
2497 | alloc_error: | |
2498 | return len; | |
2499 | } | |
2500 | ||
2501 | /* | |
2502 | * Returns 0 on success, negative error value on error. | |
2503 | */ | |
2504 | int ustctl_reply_register_channel(int sock, | |
2505 | uint32_t chan_id, | |
2506 | enum ustctl_channel_header header_type, | |
2507 | int ret_code) | |
2508 | { | |
2509 | ssize_t len; | |
2510 | struct { | |
2511 | struct ustcomm_notify_hdr header; | |
2512 | struct ustcomm_notify_channel_reply r; | |
2513 | } reply; | |
2514 | ||
2515 | memset(&reply, 0, sizeof(reply)); | |
2516 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL; | |
2517 | reply.r.ret_code = ret_code; | |
2518 | reply.r.chan_id = chan_id; | |
2519 | switch (header_type) { | |
2520 | case USTCTL_CHANNEL_HEADER_COMPACT: | |
2521 | reply.r.header_type = 1; | |
2522 | break; | |
2523 | case USTCTL_CHANNEL_HEADER_LARGE: | |
2524 | reply.r.header_type = 2; | |
2525 | break; | |
2526 | default: | |
2527 | reply.r.header_type = 0; | |
2528 | break; | |
2529 | } | |
2530 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2531 | if (len > 0 && len != sizeof(reply)) | |
2532 | return -EIO; | |
2533 | if (len < 0) | |
2534 | return len; | |
2535 | return 0; | |
2536 | } | |
2537 | ||
f53329f3 JD |
2538 | /* Regenerate the statedump. */ |
2539 | int ustctl_regenerate_statedump(int sock, int handle) | |
2540 | { | |
2541 | struct ustcomm_ust_msg lum; | |
2542 | struct ustcomm_ust_reply lur; | |
2543 | int ret; | |
2544 | ||
2545 | memset(&lum, 0, sizeof(lum)); | |
2546 | lum.handle = handle; | |
2547 | lum.cmd = LTTNG_UST_SESSION_STATEDUMP; | |
2548 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
2549 | if (ret) | |
2550 | return ret; | |
2551 | DBG("Regenerated statedump for handle %u", handle); | |
2552 | return 0; | |
2553 | } | |
2554 | ||
ebabbf58 MD |
2555 | /* counter operations */ |
2556 | ||
2557 | int ustctl_get_nr_cpu_per_counter(void) | |
2558 | { | |
2559 | return lttng_counter_num_possible_cpus(); | |
2560 | } | |
2561 | ||
2562 | struct ustctl_daemon_counter * | |
2563 | ustctl_create_counter(size_t nr_dimensions, | |
2564 | const struct ustctl_counter_dimension *dimensions, | |
2565 | int64_t global_sum_step, | |
2566 | int global_counter_fd, | |
2567 | int nr_counter_cpu_fds, | |
2568 | const int *counter_cpu_fds, | |
2569 | enum ustctl_counter_bitness bitness, | |
2570 | enum ustctl_counter_arithmetic arithmetic, | |
2571 | uint32_t alloc_flags) | |
2572 | { | |
2573 | const char *transport_name; | |
2574 | struct ustctl_daemon_counter *counter; | |
2575 | struct lttng_counter_transport *transport; | |
2576 | struct lttng_counter_dimension ust_dim[LTTNG_COUNTER_DIMENSION_MAX]; | |
2577 | size_t i; | |
2578 | ||
2579 | if (nr_dimensions > LTTNG_COUNTER_DIMENSION_MAX) | |
2580 | return NULL; | |
2581 | /* Currently, only per-cpu allocation is supported. */ | |
2582 | switch (alloc_flags) { | |
2583 | case USTCTL_COUNTER_ALLOC_PER_CPU: | |
2584 | break; | |
2585 | ||
2586 | case USTCTL_COUNTER_ALLOC_PER_CPU | USTCTL_COUNTER_ALLOC_GLOBAL: | |
2587 | case USTCTL_COUNTER_ALLOC_GLOBAL: | |
2588 | default: | |
2589 | return NULL; | |
2590 | } | |
2591 | switch (bitness) { | |
2592 | case USTCTL_COUNTER_BITNESS_32: | |
2593 | switch (arithmetic) { | |
2594 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2595 | transport_name = "counter-per-cpu-32-modular"; | |
2596 | break; | |
2597 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2598 | transport_name = "counter-per-cpu-32-saturation"; | |
2599 | break; | |
2600 | default: | |
2601 | return NULL; | |
2602 | } | |
2603 | break; | |
2604 | case USTCTL_COUNTER_BITNESS_64: | |
2605 | switch (arithmetic) { | |
2606 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2607 | transport_name = "counter-per-cpu-64-modular"; | |
2608 | break; | |
2609 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2610 | transport_name = "counter-per-cpu-64-saturation"; | |
2611 | break; | |
2612 | default: | |
2613 | return NULL; | |
2614 | } | |
2615 | break; | |
2616 | default: | |
2617 | return NULL; | |
2618 | } | |
2619 | ||
2620 | transport = lttng_counter_transport_find(transport_name); | |
2621 | if (!transport) { | |
2622 | DBG("LTTng transport %s not found\n", | |
2623 | transport_name); | |
2624 | return NULL; | |
2625 | } | |
2626 | ||
2627 | counter = zmalloc(sizeof(*counter)); | |
2628 | if (!counter) | |
2629 | return NULL; | |
2630 | counter->attr = zmalloc(sizeof(*counter->attr)); | |
2631 | if (!counter->attr) | |
2632 | goto free_counter; | |
2633 | counter->attr->bitness = bitness; | |
2634 | counter->attr->arithmetic = arithmetic; | |
2635 | counter->attr->nr_dimensions = nr_dimensions; | |
2636 | counter->attr->global_sum_step = global_sum_step; | |
2637 | for (i = 0; i < nr_dimensions; i++) | |
2638 | counter->attr->dimensions[i] = dimensions[i]; | |
2639 | ||
2640 | for (i = 0; i < nr_dimensions; i++) { | |
2641 | ust_dim[i].size = dimensions[i].size; | |
2642 | ust_dim[i].underflow_index = dimensions[i].underflow_index; | |
2643 | ust_dim[i].overflow_index = dimensions[i].overflow_index; | |
2644 | ust_dim[i].has_underflow = dimensions[i].has_underflow; | |
2645 | ust_dim[i].has_overflow = dimensions[i].has_overflow; | |
2646 | } | |
2647 | counter->counter = transport->ops.counter_create(nr_dimensions, | |
2648 | ust_dim, global_sum_step, global_counter_fd, | |
2649 | nr_counter_cpu_fds, counter_cpu_fds, true); | |
2650 | if (!counter->counter) | |
2651 | goto free_attr; | |
2652 | counter->ops = &transport->ops; | |
2653 | return counter; | |
2654 | ||
2655 | free_attr: | |
2656 | free(counter->attr); | |
2657 | free_counter: | |
2658 | free(counter); | |
2659 | return NULL; | |
2660 | } | |
2661 | ||
2662 | int ustctl_create_counter_data(struct ustctl_daemon_counter *counter, | |
2663 | struct lttng_ust_object_data **_counter_data) | |
2664 | { | |
2665 | struct lttng_ust_object_data *counter_data; | |
dca92811 | 2666 | struct lttng_ust_counter_conf counter_conf = {0}; |
ebabbf58 MD |
2667 | size_t i; |
2668 | int ret; | |
2669 | ||
2670 | switch (counter->attr->arithmetic) { | |
2671 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2672 | counter_conf.arithmetic = LTTNG_UST_COUNTER_ARITHMETIC_MODULAR; | |
2673 | break; | |
2674 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2675 | counter_conf.arithmetic = LTTNG_UST_COUNTER_ARITHMETIC_SATURATION; | |
2676 | break; | |
2677 | default: | |
2678 | return -EINVAL; | |
2679 | } | |
2680 | switch (counter->attr->bitness) { | |
2681 | case USTCTL_COUNTER_BITNESS_32: | |
38980ed1 | 2682 | counter_conf.bitness = LTTNG_UST_COUNTER_BITNESS_32; |
ebabbf58 MD |
2683 | break; |
2684 | case USTCTL_COUNTER_BITNESS_64: | |
38980ed1 | 2685 | counter_conf.bitness = LTTNG_UST_COUNTER_BITNESS_64; |
ebabbf58 MD |
2686 | break; |
2687 | default: | |
2688 | return -EINVAL; | |
2689 | } | |
2690 | counter_conf.number_dimensions = counter->attr->nr_dimensions; | |
2691 | counter_conf.global_sum_step = counter->attr->global_sum_step; | |
2692 | for (i = 0; i < counter->attr->nr_dimensions; i++) { | |
2693 | counter_conf.dimensions[i].size = counter->attr->dimensions[i].size; | |
2694 | counter_conf.dimensions[i].underflow_index = counter->attr->dimensions[i].underflow_index; | |
2695 | counter_conf.dimensions[i].overflow_index = counter->attr->dimensions[i].overflow_index; | |
2696 | counter_conf.dimensions[i].has_underflow = counter->attr->dimensions[i].has_underflow; | |
2697 | counter_conf.dimensions[i].has_overflow = counter->attr->dimensions[i].has_overflow; | |
2698 | } | |
2699 | ||
2700 | counter_data = zmalloc(sizeof(*counter_data)); | |
2701 | if (!counter_data) { | |
2702 | ret = -ENOMEM; | |
2703 | goto error_alloc; | |
2704 | } | |
2705 | counter_data->type = LTTNG_UST_OBJECT_TYPE_COUNTER; | |
2706 | counter_data->handle = -1; | |
2707 | ||
2708 | counter_data->size = sizeof(counter_conf); | |
2709 | counter_data->u.counter.data = zmalloc(sizeof(counter_conf)); | |
2710 | if (!counter_data->u.counter.data) { | |
2711 | ret = -ENOMEM; | |
2712 | goto error_alloc_data; | |
2713 | } | |
2714 | ||
2715 | memcpy(counter_data->u.counter.data, &counter_conf, sizeof(counter_conf)); | |
2716 | *_counter_data = counter_data; | |
2717 | ||
2718 | return 0; | |
2719 | ||
2720 | error_alloc_data: | |
2721 | free(counter_data); | |
2722 | error_alloc: | |
2723 | return ret; | |
2724 | } | |
2725 | ||
2726 | int ustctl_create_counter_global_data(struct ustctl_daemon_counter *counter, | |
2727 | struct lttng_ust_object_data **_counter_global_data) | |
2728 | { | |
2729 | struct lttng_ust_object_data *counter_global_data; | |
2730 | int ret, fd; | |
2731 | size_t len; | |
2732 | ||
2733 | if (lttng_counter_get_global_shm(counter->counter, &fd, &len)) | |
2734 | return -EINVAL; | |
2735 | counter_global_data = zmalloc(sizeof(*counter_global_data)); | |
2736 | if (!counter_global_data) { | |
2737 | ret = -ENOMEM; | |
2738 | goto error_alloc; | |
2739 | } | |
2740 | counter_global_data->type = LTTNG_UST_OBJECT_TYPE_COUNTER_GLOBAL; | |
2741 | counter_global_data->handle = -1; | |
2742 | counter_global_data->size = len; | |
2743 | counter_global_data->u.counter_global.shm_fd = fd; | |
2744 | *_counter_global_data = counter_global_data; | |
2745 | return 0; | |
2746 | ||
2747 | error_alloc: | |
2748 | return ret; | |
2749 | } | |
2750 | ||
2751 | int ustctl_create_counter_cpu_data(struct ustctl_daemon_counter *counter, int cpu, | |
2752 | struct lttng_ust_object_data **_counter_cpu_data) | |
2753 | { | |
2754 | struct lttng_ust_object_data *counter_cpu_data; | |
2755 | int ret, fd; | |
2756 | size_t len; | |
2757 | ||
2758 | if (lttng_counter_get_cpu_shm(counter->counter, cpu, &fd, &len)) | |
2759 | return -EINVAL; | |
2760 | counter_cpu_data = zmalloc(sizeof(*counter_cpu_data)); | |
2761 | if (!counter_cpu_data) { | |
2762 | ret = -ENOMEM; | |
2763 | goto error_alloc; | |
2764 | } | |
2765 | counter_cpu_data->type = LTTNG_UST_OBJECT_TYPE_COUNTER_CPU; | |
2766 | counter_cpu_data->handle = -1; | |
2767 | counter_cpu_data->size = len; | |
2768 | counter_cpu_data->u.counter_cpu.shm_fd = fd; | |
2769 | counter_cpu_data->u.counter_cpu.cpu_nr = cpu; | |
2770 | *_counter_cpu_data = counter_cpu_data; | |
2771 | return 0; | |
2772 | ||
2773 | error_alloc: | |
2774 | return ret; | |
2775 | } | |
2776 | ||
2777 | void ustctl_destroy_counter(struct ustctl_daemon_counter *counter) | |
2778 | { | |
2779 | counter->ops->counter_destroy(counter->counter); | |
2780 | free(counter->attr); | |
2781 | free(counter); | |
2782 | } | |
2783 | ||
2784 | int ustctl_send_counter_data_to_ust(int sock, int parent_handle, | |
2785 | struct lttng_ust_object_data *counter_data) | |
2786 | { | |
2787 | struct ustcomm_ust_msg lum; | |
2788 | struct ustcomm_ust_reply lur; | |
2789 | int ret; | |
2790 | size_t size; | |
2791 | ssize_t len; | |
2792 | ||
2793 | if (!counter_data) | |
2794 | return -EINVAL; | |
2795 | ||
2796 | size = counter_data->size; | |
2797 | memset(&lum, 0, sizeof(lum)); | |
2798 | lum.handle = parent_handle; | |
2799 | lum.cmd = LTTNG_UST_COUNTER; | |
2800 | lum.u.counter.len = size; | |
2801 | ret = ustcomm_send_app_msg(sock, &lum); | |
2802 | if (ret) | |
2803 | return ret; | |
2804 | ||
2805 | /* Send counter data */ | |
2806 | len = ustcomm_send_unix_sock(sock, counter_data->u.counter.data, size); | |
2807 | if (len != size) { | |
2808 | if (len < 0) | |
2809 | return len; | |
2810 | else | |
2811 | return -EIO; | |
2812 | } | |
2813 | ||
2814 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2815 | if (!ret) { | |
2816 | counter_data->handle = lur.ret_val; | |
2817 | } | |
2818 | return ret; | |
2819 | } | |
2820 | ||
2821 | int ustctl_send_counter_global_data_to_ust(int sock, | |
2822 | struct lttng_ust_object_data *counter_data, | |
2823 | struct lttng_ust_object_data *counter_global_data) | |
2824 | { | |
2825 | struct ustcomm_ust_msg lum; | |
2826 | struct ustcomm_ust_reply lur; | |
2827 | int ret, shm_fd[1]; | |
2828 | size_t size; | |
2829 | ssize_t len; | |
2830 | ||
2831 | if (!counter_data || !counter_global_data) | |
2832 | return -EINVAL; | |
2833 | ||
2834 | size = counter_global_data->size; | |
2835 | memset(&lum, 0, sizeof(lum)); | |
2836 | lum.handle = counter_data->handle; /* parent handle */ | |
2837 | lum.cmd = LTTNG_UST_COUNTER_GLOBAL; | |
2838 | lum.u.counter_global.len = size; | |
2839 | ret = ustcomm_send_app_msg(sock, &lum); | |
2840 | if (ret) | |
2841 | return ret; | |
2842 | ||
2843 | shm_fd[0] = counter_global_data->u.counter_global.shm_fd; | |
2844 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
2845 | if (len <= 0) { | |
2846 | if (len < 0) | |
2847 | return len; | |
2848 | else | |
2849 | return -EIO; | |
2850 | } | |
2851 | ||
2852 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2853 | if (!ret) { | |
2854 | counter_global_data->handle = lur.ret_val; | |
2855 | } | |
2856 | return ret; | |
2857 | } | |
2858 | ||
2859 | int ustctl_send_counter_cpu_data_to_ust(int sock, | |
2860 | struct lttng_ust_object_data *counter_data, | |
2861 | struct lttng_ust_object_data *counter_cpu_data) | |
2862 | { | |
2863 | struct ustcomm_ust_msg lum; | |
2864 | struct ustcomm_ust_reply lur; | |
2865 | int ret, shm_fd[1]; | |
2866 | size_t size; | |
2867 | ssize_t len; | |
2868 | ||
2869 | if (!counter_data || !counter_cpu_data) | |
2870 | return -EINVAL; | |
2871 | ||
2872 | size = counter_cpu_data->size; | |
2873 | memset(&lum, 0, sizeof(lum)); | |
2874 | lum.handle = counter_data->handle; /* parent handle */ | |
2875 | lum.cmd = LTTNG_UST_COUNTER_CPU; | |
2876 | lum.u.counter_cpu.len = size; | |
2877 | lum.u.counter_cpu.cpu_nr = counter_cpu_data->u.counter_cpu.cpu_nr; | |
2878 | ret = ustcomm_send_app_msg(sock, &lum); | |
2879 | if (ret) | |
2880 | return ret; | |
2881 | ||
2882 | shm_fd[0] = counter_cpu_data->u.counter_global.shm_fd; | |
2883 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
2884 | if (len <= 0) { | |
2885 | if (len < 0) | |
2886 | return len; | |
2887 | else | |
2888 | return -EIO; | |
2889 | } | |
2890 | ||
2891 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2892 | if (!ret) { | |
2893 | counter_cpu_data->handle = lur.ret_val; | |
2894 | } | |
2895 | return ret; | |
2896 | } | |
2897 | ||
2898 | int ustctl_counter_read(struct ustctl_daemon_counter *counter, | |
2899 | const size_t *dimension_indexes, | |
2900 | int cpu, int64_t *value, | |
2901 | bool *overflow, bool *underflow) | |
2902 | { | |
2903 | return counter->ops->counter_read(counter->counter, dimension_indexes, cpu, | |
2904 | value, overflow, underflow); | |
2905 | } | |
2906 | ||
2907 | int ustctl_counter_aggregate(struct ustctl_daemon_counter *counter, | |
2908 | const size_t *dimension_indexes, | |
2909 | int64_t *value, | |
2910 | bool *overflow, bool *underflow) | |
2911 | { | |
2912 | return counter->ops->counter_aggregate(counter->counter, dimension_indexes, | |
2913 | value, overflow, underflow); | |
2914 | } | |
2915 | ||
2916 | int ustctl_counter_clear(struct ustctl_daemon_counter *counter, | |
2917 | const size_t *dimension_indexes) | |
2918 | { | |
2919 | return counter->ops->counter_clear(counter->counter, dimension_indexes); | |
2920 | } | |
2921 | ||
74d81a6c MD |
2922 | static __attribute__((constructor)) |
2923 | void ustctl_init(void) | |
2924 | { | |
2b6f4374 MJ |
2925 | ust_err_init(); |
2926 | lttng_ust_getenv_init(); /* Needs ust_err_init() to be completed. */ | |
f9364363 | 2927 | lttng_ust_clock_init(); |
74d81a6c MD |
2928 | lttng_ring_buffer_metadata_client_init(); |
2929 | lttng_ring_buffer_client_overwrite_init(); | |
34a91bdb | 2930 | lttng_ring_buffer_client_overwrite_rt_init(); |
74d81a6c | 2931 | lttng_ring_buffer_client_discard_init(); |
34a91bdb | 2932 | lttng_ring_buffer_client_discard_rt_init(); |
ebabbf58 MD |
2933 | lttng_counter_client_percpu_32_modular_init(); |
2934 | lttng_counter_client_percpu_64_modular_init(); | |
03d2d293 | 2935 | lib_ringbuffer_signal_init(); |
74d81a6c MD |
2936 | } |
2937 | ||
2938 | static __attribute__((destructor)) | |
2939 | void ustctl_exit(void) | |
2940 | { | |
34a91bdb | 2941 | lttng_ring_buffer_client_discard_rt_exit(); |
74d81a6c | 2942 | lttng_ring_buffer_client_discard_exit(); |
34a91bdb | 2943 | lttng_ring_buffer_client_overwrite_rt_exit(); |
74d81a6c MD |
2944 | lttng_ring_buffer_client_overwrite_exit(); |
2945 | lttng_ring_buffer_metadata_client_exit(); | |
ebabbf58 MD |
2946 | lttng_counter_client_percpu_32_modular_exit(); |
2947 | lttng_counter_client_percpu_64_modular_exit(); | |
57773204 | 2948 | } |