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> | |
c1fca457 | 18 | #include <lttng/ust-events.h> |
3208818b | 19 | #include <lttng/ust-endian.h> |
44c72f10 | 20 | #include <usterr-signal-safe.h> |
b728d87e | 21 | #include <ust-comm.h> |
74d81a6c | 22 | #include <helper.h> |
57773204 MD |
23 | |
24 | #include "../libringbuffer/backend.h" | |
25 | #include "../libringbuffer/frontend.h" | |
c9023c93 | 26 | #include "../liblttng-ust/wait.h" |
b2f3252a | 27 | #include "../liblttng-ust/lttng-rb-clients.h" |
f9364363 | 28 | #include "../liblttng-ust/clock.h" |
92ce256d | 29 | #include "../liblttng-ust/getenv.h" |
23d128de | 30 | #include "../liblttng-ust/lttng-tracer-core.h" |
c9023c93 | 31 | |
ebabbf58 MD |
32 | #include "../libcounter/shm.h" |
33 | #include "../libcounter/smp.h" | |
34 | #include "../libcounter/counter.h" | |
35 | ||
c9023c93 MD |
36 | /* |
37 | * Number of milliseconds to retry before failing metadata writes on | |
38 | * buffer full condition. (10 seconds) | |
39 | */ | |
40 | #define LTTNG_METADATA_TIMEOUT_MSEC 10000 | |
57773204 | 41 | |
74d81a6c MD |
42 | /* |
43 | * Channel representation within consumer. | |
44 | */ | |
45 | struct ustctl_consumer_channel { | |
46 | struct lttng_channel *chan; /* lttng channel buffers */ | |
6b120308 | 47 | |
74d81a6c MD |
48 | /* initial attributes */ |
49 | struct ustctl_consumer_channel_attr attr; | |
ff0f5728 MD |
50 | int wait_fd; /* monitor close() */ |
51 | int wakeup_fd; /* monitor close() */ | |
74d81a6c MD |
52 | }; |
53 | ||
54 | /* | |
55 | * Stream representation within consumer. | |
56 | */ | |
57 | struct ustctl_consumer_stream { | |
58 | struct lttng_ust_shm_handle *handle; /* shared-memory handle */ | |
59 | struct lttng_ust_lib_ring_buffer *buf; | |
60 | struct ustctl_consumer_channel *chan; | |
61 | int shm_fd, wait_fd, wakeup_fd; | |
62 | int cpu; | |
63 | uint64_t memory_map_size; | |
64 | }; | |
65 | ||
ebabbf58 MD |
66 | #define USTCTL_COUNTER_ATTR_DIMENSION_MAX 8 |
67 | struct ustctl_counter_attr { | |
68 | enum ustctl_counter_arithmetic arithmetic; | |
69 | enum ustctl_counter_bitness bitness; | |
70 | uint32_t nr_dimensions; | |
71 | int64_t global_sum_step; | |
72 | struct ustctl_counter_dimension dimensions[USTCTL_COUNTER_ATTR_DIMENSION_MAX]; | |
73 | }; | |
74 | ||
75 | /* | |
76 | * Counter representation within daemon. | |
77 | */ | |
78 | struct ustctl_daemon_counter { | |
79 | struct lib_counter *counter; | |
80 | const struct lttng_counter_ops *ops; | |
81 | struct ustctl_counter_attr *attr; /* initial attributes */ | |
82 | }; | |
83 | ||
74d81a6c | 84 | extern void lttng_ring_buffer_client_overwrite_init(void); |
08a3170c | 85 | extern void lttng_ring_buffer_client_overwrite_rt_init(void); |
74d81a6c | 86 | extern void lttng_ring_buffer_client_discard_init(void); |
08a3170c | 87 | extern void lttng_ring_buffer_client_discard_rt_init(void); |
74d81a6c MD |
88 | extern void lttng_ring_buffer_metadata_client_init(void); |
89 | extern void lttng_ring_buffer_client_overwrite_exit(void); | |
08a3170c | 90 | extern void lttng_ring_buffer_client_overwrite_rt_exit(void); |
74d81a6c | 91 | extern void lttng_ring_buffer_client_discard_exit(void); |
08a3170c | 92 | extern void lttng_ring_buffer_client_discard_rt_exit(void); |
74d81a6c | 93 | extern void lttng_ring_buffer_metadata_client_exit(void); |
31677417 | 94 | LTTNG_HIDDEN |
ebabbf58 | 95 | extern void lttng_counter_client_percpu_32_modular_init(void); |
31677417 | 96 | LTTNG_HIDDEN |
ebabbf58 | 97 | extern void lttng_counter_client_percpu_32_modular_exit(void); |
31677417 | 98 | LTTNG_HIDDEN |
ebabbf58 | 99 | extern void lttng_counter_client_percpu_64_modular_init(void); |
31677417 | 100 | LTTNG_HIDDEN |
ebabbf58 | 101 | extern void lttng_counter_client_percpu_64_modular_exit(void); |
74d81a6c | 102 | |
2be0e72c MD |
103 | int ustctl_release_handle(int sock, int handle) |
104 | { | |
105 | struct ustcomm_ust_msg lum; | |
106 | struct ustcomm_ust_reply lur; | |
2be0e72c | 107 | |
74d81a6c MD |
108 | if (sock < 0 || handle < 0) |
109 | return 0; | |
110 | memset(&lum, 0, sizeof(lum)); | |
111 | lum.handle = handle; | |
112 | lum.cmd = LTTNG_UST_RELEASE; | |
113 | return ustcomm_send_app_cmd(sock, &lum, &lur); | |
2be0e72c | 114 | } |
74d81a6c | 115 | |
12388166 MD |
116 | /* |
117 | * If sock is negative, it means we don't have to notify the other side | |
118 | * (e.g. application has already vanished). | |
119 | */ | |
d26228ae | 120 | int ustctl_release_object(int sock, struct lttng_ust_object_data *data) |
57773204 | 121 | { |
57773204 MD |
122 | int ret; |
123 | ||
9bfc503d MD |
124 | if (!data) |
125 | return -EINVAL; | |
126 | ||
74d81a6c MD |
127 | switch (data->type) { |
128 | case LTTNG_UST_OBJECT_TYPE_CHANNEL: | |
ff0f5728 MD |
129 | if (data->u.channel.wakeup_fd >= 0) { |
130 | ret = close(data->u.channel.wakeup_fd); | |
131 | if (ret < 0) { | |
132 | ret = -errno; | |
133 | return ret; | |
134 | } | |
dd6c697c | 135 | data->u.channel.wakeup_fd = -1; |
ff0f5728 | 136 | } |
74d81a6c | 137 | free(data->u.channel.data); |
dd6c697c | 138 | data->u.channel.data = NULL; |
74d81a6c MD |
139 | break; |
140 | case LTTNG_UST_OBJECT_TYPE_STREAM: | |
141 | if (data->u.stream.shm_fd >= 0) { | |
142 | ret = close(data->u.stream.shm_fd); | |
143 | if (ret < 0) { | |
144 | ret = -errno; | |
145 | return ret; | |
146 | } | |
dd6c697c | 147 | data->u.stream.shm_fd = -1; |
d26228ae | 148 | } |
74d81a6c MD |
149 | if (data->u.stream.wakeup_fd >= 0) { |
150 | ret = close(data->u.stream.wakeup_fd); | |
151 | if (ret < 0) { | |
152 | ret = -errno; | |
153 | return ret; | |
154 | } | |
dd6c697c | 155 | data->u.stream.wakeup_fd = -1; |
d26228ae | 156 | } |
74d81a6c | 157 | break; |
32ce8569 MD |
158 | case LTTNG_UST_OBJECT_TYPE_EVENT: |
159 | case LTTNG_UST_OBJECT_TYPE_CONTEXT: | |
d8d2416d FD |
160 | case LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER_GROUP: |
161 | case LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER: | |
32ce8569 | 162 | break; |
ebabbf58 MD |
163 | case LTTNG_UST_OBJECT_TYPE_COUNTER: |
164 | free(data->u.counter.data); | |
165 | data->u.counter.data = NULL; | |
166 | break; | |
167 | case LTTNG_UST_OBJECT_TYPE_COUNTER_GLOBAL: | |
168 | if (data->u.counter_global.shm_fd >= 0) { | |
169 | ret = close(data->u.counter_global.shm_fd); | |
170 | if (ret < 0) { | |
171 | ret = -errno; | |
172 | return ret; | |
173 | } | |
174 | data->u.counter_global.shm_fd = -1; | |
175 | } | |
176 | break; | |
177 | case LTTNG_UST_OBJECT_TYPE_COUNTER_CPU: | |
178 | if (data->u.counter_cpu.shm_fd >= 0) { | |
179 | ret = close(data->u.counter_cpu.shm_fd); | |
180 | if (ret < 0) { | |
181 | ret = -errno; | |
182 | return ret; | |
183 | } | |
184 | data->u.counter_cpu.shm_fd = -1; | |
185 | } | |
186 | break; | |
74d81a6c MD |
187 | default: |
188 | assert(0); | |
d26228ae | 189 | } |
2be0e72c | 190 | return ustctl_release_handle(sock, data->handle); |
57773204 MD |
191 | } |
192 | ||
1c5e467e MD |
193 | /* |
194 | * Send registration done packet to the application. | |
195 | */ | |
196 | int ustctl_register_done(int sock) | |
197 | { | |
198 | struct ustcomm_ust_msg lum; | |
199 | struct ustcomm_ust_reply lur; | |
200 | int ret; | |
201 | ||
202 | DBG("Sending register done command to %d", sock); | |
203 | memset(&lum, 0, sizeof(lum)); | |
204 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
205 | lum.cmd = LTTNG_UST_REGISTER_DONE; | |
206 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
207 | if (ret) | |
208 | return ret; | |
1c5e467e | 209 | return 0; |
1c5e467e MD |
210 | } |
211 | ||
57773204 MD |
212 | /* |
213 | * returns session handle. | |
214 | */ | |
215 | int ustctl_create_session(int sock) | |
216 | { | |
217 | struct ustcomm_ust_msg lum; | |
218 | struct ustcomm_ust_reply lur; | |
219 | int ret, session_handle; | |
220 | ||
221 | /* Create session */ | |
222 | memset(&lum, 0, sizeof(lum)); | |
223 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
224 | lum.cmd = LTTNG_UST_SESSION; | |
225 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
226 | if (ret) | |
227 | return ret; | |
228 | session_handle = lur.ret_val; | |
229 | DBG("received session handle %u", session_handle); | |
230 | return session_handle; | |
231 | } | |
232 | ||
57773204 | 233 | int ustctl_create_event(int sock, struct lttng_ust_event *ev, |
61f02aea MD |
234 | struct lttng_ust_object_data *channel_data, |
235 | struct lttng_ust_object_data **_event_data) | |
57773204 MD |
236 | { |
237 | struct ustcomm_ust_msg lum; | |
238 | struct ustcomm_ust_reply lur; | |
61f02aea | 239 | struct lttng_ust_object_data *event_data; |
57773204 MD |
240 | int ret; |
241 | ||
9bfc503d MD |
242 | if (!channel_data || !_event_data) |
243 | return -EINVAL; | |
244 | ||
74d81a6c | 245 | event_data = zmalloc(sizeof(*event_data)); |
57773204 MD |
246 | if (!event_data) |
247 | return -ENOMEM; | |
32ce8569 | 248 | event_data->type = LTTNG_UST_OBJECT_TYPE_EVENT; |
57773204 MD |
249 | memset(&lum, 0, sizeof(lum)); |
250 | lum.handle = channel_data->handle; | |
251 | lum.cmd = LTTNG_UST_EVENT; | |
252 | strncpy(lum.u.event.name, ev->name, | |
253 | LTTNG_UST_SYM_NAME_LEN); | |
254 | lum.u.event.instrumentation = ev->instrumentation; | |
457a6b58 MD |
255 | lum.u.event.loglevel_type = ev->loglevel_type; |
256 | lum.u.event.loglevel = ev->loglevel; | |
57773204 MD |
257 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
258 | if (ret) { | |
259 | free(event_data); | |
260 | return ret; | |
261 | } | |
262 | event_data->handle = lur.ret_val; | |
263 | DBG("received event handle %u", event_data->handle); | |
264 | *_event_data = event_data; | |
265 | return 0; | |
266 | } | |
267 | ||
53f0df51 | 268 | int ustctl_add_context(int sock, struct lttng_ust_context_attr *ctx, |
61f02aea MD |
269 | struct lttng_ust_object_data *obj_data, |
270 | struct lttng_ust_object_data **_context_data) | |
57773204 MD |
271 | { |
272 | struct ustcomm_ust_msg lum; | |
273 | struct ustcomm_ust_reply lur; | |
53f0df51 JG |
274 | struct lttng_ust_object_data *context_data = NULL; |
275 | char *buf = NULL; | |
276 | size_t len; | |
57773204 MD |
277 | int ret; |
278 | ||
53f0df51 JG |
279 | if (!obj_data || !_context_data) { |
280 | ret = -EINVAL; | |
281 | goto end; | |
282 | } | |
9bfc503d | 283 | |
74d81a6c | 284 | context_data = zmalloc(sizeof(*context_data)); |
53f0df51 JG |
285 | if (!context_data) { |
286 | ret = -ENOMEM; | |
287 | goto end; | |
288 | } | |
32ce8569 | 289 | context_data->type = LTTNG_UST_OBJECT_TYPE_CONTEXT; |
57773204 | 290 | memset(&lum, 0, sizeof(lum)); |
3039d8ed | 291 | lum.handle = obj_data->handle; |
57773204 | 292 | lum.cmd = LTTNG_UST_CONTEXT; |
53f0df51 JG |
293 | |
294 | lum.u.context.ctx = ctx->ctx; | |
295 | switch (ctx->ctx) { | |
296 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: | |
297 | lum.u.context.u.perf_counter = ctx->u.perf_counter; | |
298 | break; | |
299 | case LTTNG_UST_CONTEXT_APP_CONTEXT: | |
300 | { | |
301 | size_t provider_name_len = strlen( | |
302 | ctx->u.app_ctx.provider_name) + 1; | |
303 | size_t ctx_name_len = strlen(ctx->u.app_ctx.ctx_name) + 1; | |
304 | ||
305 | lum.u.context.u.app_ctx.provider_name_len = provider_name_len; | |
306 | lum.u.context.u.app_ctx.ctx_name_len = ctx_name_len; | |
307 | ||
308 | len = provider_name_len + ctx_name_len; | |
309 | buf = zmalloc(len); | |
310 | if (!buf) { | |
311 | ret = -ENOMEM; | |
312 | goto end; | |
313 | } | |
314 | memcpy(buf, ctx->u.app_ctx.provider_name, | |
315 | provider_name_len); | |
316 | memcpy(buf + provider_name_len, ctx->u.app_ctx.ctx_name, | |
317 | ctx_name_len); | |
318 | break; | |
319 | } | |
320 | default: | |
321 | break; | |
322 | } | |
323 | ret = ustcomm_send_app_msg(sock, &lum); | |
324 | if (ret) | |
325 | goto end; | |
326 | if (buf) { | |
327 | /* send var len ctx_name */ | |
328 | ret = ustcomm_send_unix_sock(sock, buf, len); | |
329 | if (ret < 0) { | |
330 | goto end; | |
331 | } | |
332 | if (ret != len) { | |
333 | ret = -EINVAL; | |
334 | goto end; | |
335 | } | |
336 | } | |
337 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
338 | if (ret < 0) { | |
339 | goto end; | |
57773204 | 340 | } |
32ce8569 MD |
341 | context_data->handle = -1; |
342 | DBG("Context created successfully"); | |
57773204 | 343 | *_context_data = context_data; |
53f0df51 JG |
344 | context_data = NULL; |
345 | end: | |
346 | free(context_data); | |
347 | free(buf); | |
57773204 MD |
348 | return ret; |
349 | } | |
350 | ||
cd54f6d9 MD |
351 | int ustctl_set_filter(int sock, struct lttng_ust_filter_bytecode *bytecode, |
352 | struct lttng_ust_object_data *obj_data) | |
353 | { | |
354 | struct ustcomm_ust_msg lum; | |
355 | struct ustcomm_ust_reply lur; | |
356 | int ret; | |
357 | ||
358 | if (!obj_data) | |
359 | return -EINVAL; | |
360 | ||
361 | memset(&lum, 0, sizeof(lum)); | |
362 | lum.handle = obj_data->handle; | |
363 | lum.cmd = LTTNG_UST_FILTER; | |
364 | lum.u.filter.data_size = bytecode->len; | |
365 | lum.u.filter.reloc_offset = bytecode->reloc_offset; | |
e695af51 | 366 | lum.u.filter.seqnum = bytecode->seqnum; |
cd54f6d9 MD |
367 | |
368 | ret = ustcomm_send_app_msg(sock, &lum); | |
d37ecb3f FD |
369 | if (ret) |
370 | return ret; | |
371 | /* send var len bytecode */ | |
372 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
373 | bytecode->len); | |
374 | if (ret < 0) { | |
375 | return ret; | |
376 | } | |
377 | if (ret != bytecode->len) | |
378 | return -EINVAL; | |
379 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
380 | } | |
381 | ||
382 | int ustctl_set_capture(int sock, struct lttng_ust_capture_bytecode *bytecode, | |
383 | struct lttng_ust_object_data *obj_data) | |
384 | { | |
385 | struct ustcomm_ust_msg lum; | |
386 | struct ustcomm_ust_reply lur; | |
387 | int ret; | |
388 | ||
389 | if (!obj_data) | |
390 | return -EINVAL; | |
391 | ||
392 | memset(&lum, 0, sizeof(lum)); | |
393 | lum.handle = obj_data->handle; | |
394 | lum.cmd = LTTNG_UST_CAPTURE; | |
395 | lum.u.capture.data_size = bytecode->len; | |
396 | lum.u.capture.reloc_offset = bytecode->reloc_offset; | |
397 | lum.u.capture.seqnum = bytecode->seqnum; | |
398 | ||
399 | ret = ustcomm_send_app_msg(sock, &lum); | |
cd54f6d9 MD |
400 | if (ret) |
401 | return ret; | |
cd54f6d9 MD |
402 | /* send var len bytecode */ |
403 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
404 | bytecode->len); | |
405 | if (ret < 0) { | |
406 | return ret; | |
407 | } | |
7bc53e94 MD |
408 | if (ret != bytecode->len) |
409 | return -EINVAL; | |
410 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
cd54f6d9 MD |
411 | } |
412 | ||
da57c034 JI |
413 | int ustctl_set_exclusion(int sock, struct lttng_ust_event_exclusion *exclusion, |
414 | struct lttng_ust_object_data *obj_data) | |
415 | { | |
416 | struct ustcomm_ust_msg lum; | |
417 | struct ustcomm_ust_reply lur; | |
418 | int ret; | |
419 | ||
420 | if (!obj_data) { | |
421 | return -EINVAL; | |
422 | } | |
423 | ||
424 | memset(&lum, 0, sizeof(lum)); | |
425 | lum.handle = obj_data->handle; | |
426 | lum.cmd = LTTNG_UST_EXCLUSION; | |
427 | lum.u.exclusion.count = exclusion->count; | |
428 | ||
429 | ret = ustcomm_send_app_msg(sock, &lum); | |
430 | if (ret) { | |
431 | return ret; | |
432 | } | |
433 | ||
1628366f | 434 | /* send var len exclusion names */ |
da57c034 JI |
435 | ret = ustcomm_send_unix_sock(sock, |
436 | exclusion->names, | |
437 | exclusion->count * LTTNG_UST_SYM_NAME_LEN); | |
438 | if (ret < 0) { | |
439 | return ret; | |
440 | } | |
441 | if (ret != exclusion->count * LTTNG_UST_SYM_NAME_LEN) { | |
442 | return -EINVAL; | |
443 | } | |
444 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
445 | } | |
446 | ||
57773204 | 447 | /* Enable event, channel and session ioctl */ |
61f02aea | 448 | int ustctl_enable(int sock, struct lttng_ust_object_data *object) |
57773204 MD |
449 | { |
450 | struct ustcomm_ust_msg lum; | |
451 | struct ustcomm_ust_reply lur; | |
452 | int ret; | |
453 | ||
9bfc503d MD |
454 | if (!object) |
455 | return -EINVAL; | |
456 | ||
57773204 MD |
457 | memset(&lum, 0, sizeof(lum)); |
458 | lum.handle = object->handle; | |
459 | lum.cmd = LTTNG_UST_ENABLE; | |
460 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
461 | if (ret) | |
462 | return ret; | |
463 | DBG("enabled handle %u", object->handle); | |
464 | return 0; | |
465 | } | |
466 | ||
467 | /* Disable event, channel and session ioctl */ | |
61f02aea | 468 | int ustctl_disable(int sock, struct lttng_ust_object_data *object) |
57773204 MD |
469 | { |
470 | struct ustcomm_ust_msg lum; | |
471 | struct ustcomm_ust_reply lur; | |
472 | int ret; | |
473 | ||
9bfc503d MD |
474 | if (!object) |
475 | return -EINVAL; | |
476 | ||
57773204 MD |
477 | memset(&lum, 0, sizeof(lum)); |
478 | lum.handle = object->handle; | |
479 | lum.cmd = LTTNG_UST_DISABLE; | |
480 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
481 | if (ret) | |
482 | return ret; | |
483 | DBG("disable handle %u", object->handle); | |
484 | return 0; | |
485 | } | |
486 | ||
4a6ca058 | 487 | int ustctl_start_session(int sock, int handle) |
57773204 | 488 | { |
61f02aea | 489 | struct lttng_ust_object_data obj; |
4a6ca058 MD |
490 | |
491 | obj.handle = handle; | |
492 | return ustctl_enable(sock, &obj); | |
57773204 MD |
493 | } |
494 | ||
4a6ca058 | 495 | int ustctl_stop_session(int sock, int handle) |
57773204 | 496 | { |
61f02aea | 497 | struct lttng_ust_object_data obj; |
4a6ca058 MD |
498 | |
499 | obj.handle = handle; | |
500 | return ustctl_disable(sock, &obj); | |
57773204 MD |
501 | } |
502 | ||
d8d2416d FD |
503 | int ustctl_create_event_notifier_group(int sock, int pipe_fd, |
504 | struct lttng_ust_object_data **_event_notifier_group_data) | |
505 | { | |
506 | struct lttng_ust_object_data *event_notifier_group_data; | |
507 | struct ustcomm_ust_msg lum; | |
508 | struct ustcomm_ust_reply lur; | |
509 | ssize_t len; | |
510 | int ret; | |
511 | ||
512 | if (!_event_notifier_group_data) | |
513 | return -EINVAL; | |
514 | ||
515 | event_notifier_group_data = zmalloc(sizeof(*event_notifier_group_data)); | |
516 | if (!event_notifier_group_data) | |
517 | return -ENOMEM; | |
518 | ||
519 | event_notifier_group_data->type = LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER_GROUP; | |
520 | ||
521 | memset(&lum, 0, sizeof(lum)); | |
522 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
523 | lum.cmd = LTTNG_UST_EVENT_NOTIFIER_GROUP_CREATE; | |
524 | ||
525 | ret = ustcomm_send_app_msg(sock, &lum); | |
526 | if (ret) | |
527 | goto error; | |
528 | ||
529 | /* Send event_notifier notification pipe. */ | |
530 | len = ustcomm_send_fds_unix_sock(sock, &pipe_fd, 1); | |
531 | if (len <= 0) { | |
532 | ret = len; | |
533 | goto error; | |
534 | } | |
535 | ||
536 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
537 | if (ret) | |
538 | goto error; | |
539 | ||
540 | event_notifier_group_data->handle = lur.ret_val; | |
541 | DBG("received event_notifier group handle %d", event_notifier_group_data->handle); | |
542 | ||
543 | *_event_notifier_group_data = event_notifier_group_data; | |
544 | ||
545 | ret = 0; | |
546 | goto end; | |
547 | error: | |
548 | free(event_notifier_group_data); | |
549 | ||
550 | end: | |
551 | return ret; | |
552 | } | |
553 | ||
554 | int ustctl_create_event_notifier(int sock, struct lttng_ust_event_notifier *event_notifier, | |
555 | struct lttng_ust_object_data *event_notifier_group, | |
556 | struct lttng_ust_object_data **_event_notifier_data) | |
557 | { | |
558 | struct ustcomm_ust_msg lum; | |
559 | struct ustcomm_ust_reply lur; | |
560 | struct lttng_ust_object_data *event_notifier_data; | |
8406222c | 561 | ssize_t len; |
d8d2416d FD |
562 | int ret; |
563 | ||
564 | if (!event_notifier_group || !_event_notifier_data) | |
565 | return -EINVAL; | |
566 | ||
567 | event_notifier_data = zmalloc(sizeof(*event_notifier_data)); | |
568 | if (!event_notifier_data) | |
569 | return -ENOMEM; | |
570 | ||
571 | event_notifier_data->type = LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER; | |
572 | ||
573 | memset(&lum, 0, sizeof(lum)); | |
574 | lum.handle = event_notifier_group->handle; | |
575 | lum.cmd = LTTNG_UST_EVENT_NOTIFIER_CREATE; | |
8406222c | 576 | lum.u.event_notifier.len = sizeof(*event_notifier); |
d8d2416d | 577 | |
41844673 | 578 | ret = ustcomm_send_app_msg(sock, &lum); |
d8d2416d FD |
579 | if (ret) { |
580 | free(event_notifier_data); | |
581 | return ret; | |
582 | } | |
8406222c MD |
583 | /* Send struct lttng_ust_event_notifier */ |
584 | len = ustcomm_send_unix_sock(sock, event_notifier, sizeof(*event_notifier)); | |
585 | if (len != sizeof(*event_notifier)) { | |
586 | if (len < 0) | |
587 | return len; | |
588 | else | |
589 | return -EIO; | |
590 | } | |
41844673 MD |
591 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); |
592 | if (ret) { | |
593 | free(event_notifier_data); | |
594 | return ret; | |
595 | } | |
d8d2416d FD |
596 | event_notifier_data->handle = lur.ret_val; |
597 | DBG("received event_notifier handle %u", event_notifier_data->handle); | |
598 | *_event_notifier_data = event_notifier_data; | |
599 | ||
600 | return ret; | |
601 | } | |
602 | ||
57773204 MD |
603 | int ustctl_tracepoint_list(int sock) |
604 | { | |
b115631f MD |
605 | struct ustcomm_ust_msg lum; |
606 | struct ustcomm_ust_reply lur; | |
607 | int ret, tp_list_handle; | |
608 | ||
609 | memset(&lum, 0, sizeof(lum)); | |
610 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
611 | lum.cmd = LTTNG_UST_TRACEPOINT_LIST; | |
612 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
613 | if (ret) | |
614 | return ret; | |
615 | tp_list_handle = lur.ret_val; | |
616 | DBG("received tracepoint list handle %u", tp_list_handle); | |
617 | return tp_list_handle; | |
618 | } | |
619 | ||
620 | int ustctl_tracepoint_list_get(int sock, int tp_list_handle, | |
cbef6901 | 621 | struct lttng_ust_tracepoint_iter *iter) |
b115631f MD |
622 | { |
623 | struct ustcomm_ust_msg lum; | |
624 | struct ustcomm_ust_reply lur; | |
625 | int ret; | |
626 | ||
9bfc503d MD |
627 | if (!iter) |
628 | return -EINVAL; | |
629 | ||
b115631f MD |
630 | memset(&lum, 0, sizeof(lum)); |
631 | lum.handle = tp_list_handle; | |
632 | lum.cmd = LTTNG_UST_TRACEPOINT_LIST_GET; | |
633 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
634 | if (ret) | |
635 | return ret; | |
882a56d7 | 636 | DBG("received tracepoint list entry name %s loglevel %d", |
cbef6901 | 637 | lur.u.tracepoint.name, |
882a56d7 | 638 | lur.u.tracepoint.loglevel); |
cbef6901 | 639 | memcpy(iter, &lur.u.tracepoint, sizeof(*iter)); |
b115631f | 640 | return 0; |
57773204 MD |
641 | } |
642 | ||
40003310 MD |
643 | int ustctl_tracepoint_field_list(int sock) |
644 | { | |
645 | struct ustcomm_ust_msg lum; | |
646 | struct ustcomm_ust_reply lur; | |
647 | int ret, tp_field_list_handle; | |
648 | ||
649 | memset(&lum, 0, sizeof(lum)); | |
650 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
651 | lum.cmd = LTTNG_UST_TRACEPOINT_FIELD_LIST; | |
652 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
653 | if (ret) | |
654 | return ret; | |
655 | tp_field_list_handle = lur.ret_val; | |
656 | DBG("received tracepoint field list handle %u", tp_field_list_handle); | |
657 | return tp_field_list_handle; | |
658 | } | |
659 | ||
660 | int ustctl_tracepoint_field_list_get(int sock, int tp_field_list_handle, | |
661 | struct lttng_ust_field_iter *iter) | |
662 | { | |
663 | struct ustcomm_ust_msg lum; | |
664 | struct ustcomm_ust_reply lur; | |
665 | int ret; | |
666 | ssize_t len; | |
667 | ||
668 | if (!iter) | |
669 | return -EINVAL; | |
670 | ||
671 | memset(&lum, 0, sizeof(lum)); | |
672 | lum.handle = tp_field_list_handle; | |
673 | lum.cmd = LTTNG_UST_TRACEPOINT_FIELD_LIST_GET; | |
674 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
675 | if (ret) | |
676 | return ret; | |
677 | len = ustcomm_recv_unix_sock(sock, iter, sizeof(*iter)); | |
678 | if (len != sizeof(*iter)) { | |
679 | return -EINVAL; | |
680 | } | |
681 | DBG("received tracepoint field list entry event_name %s event_loglevel %d field_name %s field_type %d", | |
682 | iter->event_name, | |
683 | iter->loglevel, | |
684 | iter->field_name, | |
685 | iter->type); | |
686 | return 0; | |
687 | } | |
688 | ||
57773204 MD |
689 | int ustctl_tracer_version(int sock, struct lttng_ust_tracer_version *v) |
690 | { | |
691 | struct ustcomm_ust_msg lum; | |
692 | struct ustcomm_ust_reply lur; | |
693 | int ret; | |
694 | ||
9bfc503d MD |
695 | if (!v) |
696 | return -EINVAL; | |
697 | ||
57773204 MD |
698 | memset(&lum, 0, sizeof(lum)); |
699 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
700 | lum.cmd = LTTNG_UST_TRACER_VERSION; | |
701 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
702 | if (ret) | |
703 | return ret; | |
704 | memcpy(v, &lur.u.version, sizeof(*v)); | |
705 | DBG("received tracer version"); | |
706 | return 0; | |
707 | } | |
708 | ||
709 | int ustctl_wait_quiescent(int sock) | |
710 | { | |
711 | struct ustcomm_ust_msg lum; | |
712 | struct ustcomm_ust_reply lur; | |
713 | int ret; | |
714 | ||
715 | memset(&lum, 0, sizeof(lum)); | |
716 | lum.handle = LTTNG_UST_ROOT_HANDLE; | |
717 | lum.cmd = LTTNG_UST_WAIT_QUIESCENT; | |
718 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
719 | if (ret) | |
720 | return ret; | |
721 | DBG("waited for quiescent state"); | |
722 | return 0; | |
723 | } | |
724 | ||
725 | int ustctl_calibrate(int sock, struct lttng_ust_calibrate *calibrate) | |
726 | { | |
9bfc503d MD |
727 | if (!calibrate) |
728 | return -EINVAL; | |
729 | ||
57773204 MD |
730 | return -ENOSYS; |
731 | } | |
732 | ||
f1fffc57 MD |
733 | int ustctl_sock_flush_buffer(int sock, struct lttng_ust_object_data *object) |
734 | { | |
735 | struct ustcomm_ust_msg lum; | |
736 | struct ustcomm_ust_reply lur; | |
737 | int ret; | |
738 | ||
9bfc503d MD |
739 | if (!object) |
740 | return -EINVAL; | |
741 | ||
f1fffc57 MD |
742 | memset(&lum, 0, sizeof(lum)); |
743 | lum.handle = object->handle; | |
744 | lum.cmd = LTTNG_UST_FLUSH_BUFFER; | |
745 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
746 | if (ret) | |
747 | return ret; | |
748 | DBG("flushed buffer handle %u", object->handle); | |
749 | return 0; | |
750 | } | |
751 | ||
74d81a6c MD |
752 | static |
753 | int ustctl_send_channel(int sock, | |
754 | enum lttng_ust_chan_type type, | |
755 | void *data, | |
756 | uint64_t size, | |
ff0f5728 | 757 | int wakeup_fd, |
74d81a6c MD |
758 | int send_fd_only) |
759 | { | |
760 | ssize_t len; | |
761 | ||
762 | if (!send_fd_only) { | |
763 | /* Send mmap size */ | |
764 | len = ustcomm_send_unix_sock(sock, &size, sizeof(size)); | |
765 | if (len != sizeof(size)) { | |
766 | if (len < 0) | |
767 | return len; | |
768 | else | |
769 | return -EIO; | |
770 | } | |
771 | ||
772 | /* Send channel type */ | |
773 | len = ustcomm_send_unix_sock(sock, &type, sizeof(type)); | |
774 | if (len != sizeof(type)) { | |
775 | if (len < 0) | |
776 | return len; | |
777 | else | |
778 | return -EIO; | |
779 | } | |
780 | } | |
781 | ||
782 | /* Send channel data */ | |
783 | len = ustcomm_send_unix_sock(sock, data, size); | |
784 | if (len != size) { | |
785 | if (len < 0) | |
786 | return len; | |
787 | else | |
788 | return -EIO; | |
789 | } | |
57773204 | 790 | |
ff0f5728 MD |
791 | /* Send wakeup fd */ |
792 | len = ustcomm_send_fds_unix_sock(sock, &wakeup_fd, 1); | |
793 | if (len <= 0) { | |
794 | if (len < 0) | |
795 | return len; | |
796 | else | |
797 | return -EIO; | |
798 | } | |
74d81a6c MD |
799 | return 0; |
800 | } | |
801 | ||
802 | static | |
803 | int ustctl_send_stream(int sock, | |
804 | uint32_t stream_nr, | |
805 | uint64_t memory_map_size, | |
806 | int shm_fd, int wakeup_fd, | |
807 | int send_fd_only) | |
57773204 | 808 | { |
74d81a6c MD |
809 | ssize_t len; |
810 | int fds[2]; | |
811 | ||
812 | if (!send_fd_only) { | |
813 | if (shm_fd < 0) { | |
814 | /* finish iteration */ | |
815 | uint64_t v = -1; | |
816 | ||
817 | len = ustcomm_send_unix_sock(sock, &v, sizeof(v)); | |
818 | if (len != sizeof(v)) { | |
819 | if (len < 0) | |
820 | return len; | |
821 | else | |
822 | return -EIO; | |
823 | } | |
824 | return 0; | |
825 | } | |
826 | ||
827 | /* Send mmap size */ | |
828 | len = ustcomm_send_unix_sock(sock, &memory_map_size, | |
829 | sizeof(memory_map_size)); | |
830 | if (len != sizeof(memory_map_size)) { | |
831 | if (len < 0) | |
832 | return len; | |
833 | else | |
834 | return -EIO; | |
835 | } | |
836 | ||
837 | /* Send stream nr */ | |
838 | len = ustcomm_send_unix_sock(sock, &stream_nr, | |
839 | sizeof(stream_nr)); | |
840 | if (len != sizeof(stream_nr)) { | |
841 | if (len < 0) | |
842 | return len; | |
843 | else | |
844 | return -EIO; | |
845 | } | |
846 | } | |
847 | ||
848 | /* Send shm fd and wakeup fd */ | |
849 | fds[0] = shm_fd; | |
850 | fds[1] = wakeup_fd; | |
851 | len = ustcomm_send_fds_unix_sock(sock, fds, 2); | |
852 | if (len <= 0) { | |
853 | if (len < 0) | |
854 | return len; | |
855 | else | |
856 | return -EIO; | |
857 | } | |
858 | return 0; | |
859 | } | |
860 | ||
861 | int ustctl_recv_channel_from_consumer(int sock, | |
862 | struct lttng_ust_object_data **_channel_data) | |
863 | { | |
864 | struct lttng_ust_object_data *channel_data; | |
865 | ssize_t len; | |
ff0f5728 | 866 | int wakeup_fd; |
7a784989 | 867 | int ret; |
57773204 | 868 | |
74d81a6c MD |
869 | channel_data = zmalloc(sizeof(*channel_data)); |
870 | if (!channel_data) { | |
871 | ret = -ENOMEM; | |
872 | goto error_alloc; | |
873 | } | |
874 | channel_data->type = LTTNG_UST_OBJECT_TYPE_CHANNEL; | |
12f3dabc | 875 | channel_data->handle = -1; |
74d81a6c MD |
876 | |
877 | /* recv mmap size */ | |
878 | len = ustcomm_recv_unix_sock(sock, &channel_data->size, | |
879 | sizeof(channel_data->size)); | |
880 | if (len != sizeof(channel_data->size)) { | |
881 | if (len < 0) | |
882 | ret = len; | |
883 | else | |
884 | ret = -EINVAL; | |
885 | goto error; | |
886 | } | |
9bfc503d | 887 | |
74d81a6c MD |
888 | /* recv channel type */ |
889 | len = ustcomm_recv_unix_sock(sock, &channel_data->u.channel.type, | |
890 | sizeof(channel_data->u.channel.type)); | |
891 | if (len != sizeof(channel_data->u.channel.type)) { | |
892 | if (len < 0) | |
893 | ret = len; | |
894 | else | |
895 | ret = -EINVAL; | |
896 | goto error; | |
897 | } | |
898 | ||
899 | /* recv channel data */ | |
900 | channel_data->u.channel.data = zmalloc(channel_data->size); | |
901 | if (!channel_data->u.channel.data) { | |
902 | ret = -ENOMEM; | |
903 | goto error; | |
904 | } | |
905 | len = ustcomm_recv_unix_sock(sock, channel_data->u.channel.data, | |
906 | channel_data->size); | |
907 | if (len != channel_data->size) { | |
908 | if (len < 0) | |
909 | ret = len; | |
910 | else | |
911 | ret = -EINVAL; | |
912 | goto error_recv_data; | |
913 | } | |
ff0f5728 MD |
914 | /* recv wakeup fd */ |
915 | len = ustcomm_recv_fds_unix_sock(sock, &wakeup_fd, 1); | |
916 | if (len <= 0) { | |
917 | if (len < 0) { | |
918 | ret = len; | |
919 | goto error_recv_data; | |
920 | } else { | |
921 | ret = -EIO; | |
922 | goto error_recv_data; | |
923 | } | |
924 | } | |
925 | channel_data->u.channel.wakeup_fd = wakeup_fd; | |
74d81a6c MD |
926 | *_channel_data = channel_data; |
927 | return 0; | |
928 | ||
929 | error_recv_data: | |
930 | free(channel_data->u.channel.data); | |
931 | error: | |
932 | free(channel_data); | |
933 | error_alloc: | |
934 | return ret; | |
935 | } | |
936 | ||
937 | int ustctl_recv_stream_from_consumer(int sock, | |
938 | struct lttng_ust_object_data **_stream_data) | |
939 | { | |
940 | struct lttng_ust_object_data *stream_data; | |
941 | ssize_t len; | |
942 | int ret; | |
943 | int fds[2]; | |
944 | ||
945 | stream_data = zmalloc(sizeof(*stream_data)); | |
946 | if (!stream_data) { | |
947 | ret = -ENOMEM; | |
948 | goto error_alloc; | |
57773204 | 949 | } |
74d81a6c MD |
950 | |
951 | stream_data->type = LTTNG_UST_OBJECT_TYPE_STREAM; | |
952 | stream_data->handle = -1; | |
953 | ||
954 | /* recv mmap size */ | |
955 | len = ustcomm_recv_unix_sock(sock, &stream_data->size, | |
956 | sizeof(stream_data->size)); | |
957 | if (len != sizeof(stream_data->size)) { | |
958 | if (len < 0) | |
959 | ret = len; | |
960 | else | |
961 | ret = -EINVAL; | |
962 | goto error; | |
963 | } | |
964 | if (stream_data->size == -1) { | |
965 | ret = -LTTNG_UST_ERR_NOENT; | |
966 | goto error; | |
967 | } | |
968 | ||
969 | /* recv stream nr */ | |
970 | len = ustcomm_recv_unix_sock(sock, &stream_data->u.stream.stream_nr, | |
971 | sizeof(stream_data->u.stream.stream_nr)); | |
972 | if (len != sizeof(stream_data->u.stream.stream_nr)) { | |
973 | if (len < 0) | |
974 | ret = len; | |
975 | else | |
976 | ret = -EINVAL; | |
977 | goto error; | |
978 | } | |
979 | ||
980 | /* recv shm fd and wakeup fd */ | |
981 | len = ustcomm_recv_fds_unix_sock(sock, fds, 2); | |
982 | if (len <= 0) { | |
983 | if (len < 0) { | |
984 | ret = len; | |
985 | goto error; | |
986 | } else { | |
987 | ret = -EIO; | |
988 | goto error; | |
0bfe09ec | 989 | } |
0bfe09ec | 990 | } |
74d81a6c MD |
991 | stream_data->u.stream.shm_fd = fds[0]; |
992 | stream_data->u.stream.wakeup_fd = fds[1]; | |
993 | *_stream_data = stream_data; | |
994 | return 0; | |
0bfe09ec | 995 | |
74d81a6c MD |
996 | error: |
997 | free(stream_data); | |
998 | error_alloc: | |
999 | return ret; | |
1000 | } | |
1001 | ||
1002 | int ustctl_send_channel_to_ust(int sock, int session_handle, | |
1003 | struct lttng_ust_object_data *channel_data) | |
1004 | { | |
1005 | struct ustcomm_ust_msg lum; | |
1006 | struct ustcomm_ust_reply lur; | |
1007 | int ret; | |
1008 | ||
1009 | if (!channel_data) | |
1010 | return -EINVAL; | |
1011 | ||
1012 | memset(&lum, 0, sizeof(lum)); | |
1013 | lum.handle = session_handle; | |
1014 | lum.cmd = LTTNG_UST_CHANNEL; | |
1015 | lum.u.channel.len = channel_data->size; | |
1016 | lum.u.channel.type = channel_data->u.channel.type; | |
1017 | ret = ustcomm_send_app_msg(sock, &lum); | |
1018 | if (ret) | |
1019 | return ret; | |
1020 | ||
1021 | ret = ustctl_send_channel(sock, | |
1022 | channel_data->u.channel.type, | |
1023 | channel_data->u.channel.data, | |
1024 | channel_data->size, | |
ff0f5728 | 1025 | channel_data->u.channel.wakeup_fd, |
74d81a6c MD |
1026 | 1); |
1027 | if (ret) | |
1028 | return ret; | |
1029 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1030 | if (!ret) { | |
7f2348b8 | 1031 | channel_data->handle = lur.ret_val; |
57773204 | 1032 | } |
74d81a6c MD |
1033 | return ret; |
1034 | } | |
1035 | ||
1036 | int ustctl_send_stream_to_ust(int sock, | |
1037 | struct lttng_ust_object_data *channel_data, | |
1038 | struct lttng_ust_object_data *stream_data) | |
1039 | { | |
1040 | struct ustcomm_ust_msg lum; | |
1041 | struct ustcomm_ust_reply lur; | |
1042 | int ret; | |
1043 | ||
1044 | memset(&lum, 0, sizeof(lum)); | |
1045 | lum.handle = channel_data->handle; | |
1046 | lum.cmd = LTTNG_UST_STREAM; | |
1047 | lum.u.stream.len = stream_data->size; | |
1048 | lum.u.stream.stream_nr = stream_data->u.stream.stream_nr; | |
1049 | ret = ustcomm_send_app_msg(sock, &lum); | |
1050 | if (ret) | |
1051 | return ret; | |
1052 | ||
1053 | assert(stream_data); | |
1054 | assert(stream_data->type == LTTNG_UST_OBJECT_TYPE_STREAM); | |
1055 | ||
1056 | ret = ustctl_send_stream(sock, | |
1057 | stream_data->u.stream.stream_nr, | |
1058 | stream_data->size, | |
1059 | stream_data->u.stream.shm_fd, | |
1060 | stream_data->u.stream.wakeup_fd, 1); | |
1061 | if (ret) | |
1062 | return ret; | |
1063 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1064 | } | |
1065 | ||
12f3dabc MD |
1066 | int ustctl_duplicate_ust_object_data(struct lttng_ust_object_data **dest, |
1067 | struct lttng_ust_object_data *src) | |
1068 | { | |
1069 | struct lttng_ust_object_data *obj; | |
1070 | int ret; | |
1071 | ||
1072 | if (src->handle != -1) { | |
1073 | ret = -EINVAL; | |
1074 | goto error; | |
1075 | } | |
1076 | ||
1077 | obj = zmalloc(sizeof(*obj)); | |
1078 | if (!obj) { | |
1079 | ret = -ENOMEM; | |
1080 | goto error; | |
1081 | } | |
1082 | ||
1083 | obj->type = src->type; | |
1084 | obj->handle = src->handle; | |
1085 | obj->size = src->size; | |
1086 | ||
1087 | switch (obj->type) { | |
1088 | case LTTNG_UST_OBJECT_TYPE_CHANNEL: | |
1089 | { | |
1090 | obj->u.channel.type = src->u.channel.type; | |
1091 | if (src->u.channel.wakeup_fd >= 0) { | |
1092 | obj->u.channel.wakeup_fd = | |
1093 | dup(src->u.channel.wakeup_fd); | |
1094 | if (obj->u.channel.wakeup_fd < 0) { | |
1095 | ret = errno; | |
1096 | goto chan_error_wakeup_fd; | |
1097 | } | |
1098 | } else { | |
1099 | obj->u.channel.wakeup_fd = | |
1100 | src->u.channel.wakeup_fd; | |
1101 | } | |
1102 | obj->u.channel.data = zmalloc(obj->size); | |
1103 | if (!obj->u.channel.data) { | |
1104 | ret = -ENOMEM; | |
1105 | goto chan_error_alloc; | |
1106 | } | |
1107 | memcpy(obj->u.channel.data, src->u.channel.data, obj->size); | |
1108 | break; | |
1109 | ||
1110 | chan_error_alloc: | |
1111 | if (src->u.channel.wakeup_fd >= 0) { | |
1112 | int closeret; | |
1113 | ||
1114 | closeret = close(obj->u.channel.wakeup_fd); | |
1115 | if (closeret) { | |
1116 | PERROR("close"); | |
1117 | } | |
1118 | } | |
1119 | chan_error_wakeup_fd: | |
1120 | goto error_type; | |
1121 | ||
1122 | } | |
1123 | ||
1124 | case LTTNG_UST_OBJECT_TYPE_STREAM: | |
1125 | { | |
1126 | obj->u.stream.stream_nr = src->u.stream.stream_nr; | |
1127 | if (src->u.stream.wakeup_fd >= 0) { | |
1128 | obj->u.stream.wakeup_fd = | |
1129 | dup(src->u.stream.wakeup_fd); | |
1130 | if (obj->u.stream.wakeup_fd < 0) { | |
1131 | ret = errno; | |
1132 | goto stream_error_wakeup_fd; | |
1133 | } | |
1134 | } else { | |
1135 | obj->u.stream.wakeup_fd = | |
1136 | src->u.stream.wakeup_fd; | |
1137 | } | |
1138 | ||
1139 | if (src->u.stream.shm_fd >= 0) { | |
1140 | obj->u.stream.shm_fd = | |
1141 | dup(src->u.stream.shm_fd); | |
1142 | if (obj->u.stream.shm_fd < 0) { | |
1143 | ret = errno; | |
1144 | goto stream_error_shm_fd; | |
1145 | } | |
1146 | } else { | |
1147 | obj->u.stream.shm_fd = | |
1148 | src->u.stream.shm_fd; | |
1149 | } | |
1150 | break; | |
1151 | ||
1152 | stream_error_shm_fd: | |
1153 | if (src->u.stream.wakeup_fd >= 0) { | |
1154 | int closeret; | |
1155 | ||
1156 | closeret = close(obj->u.stream.wakeup_fd); | |
1157 | if (closeret) { | |
1158 | PERROR("close"); | |
1159 | } | |
1160 | } | |
1161 | stream_error_wakeup_fd: | |
1162 | goto error_type; | |
1163 | } | |
1164 | ||
ebabbf58 MD |
1165 | case LTTNG_UST_OBJECT_TYPE_COUNTER: |
1166 | { | |
1167 | obj->u.counter.data = zmalloc(obj->size); | |
1168 | if (!obj->u.counter.data) { | |
1169 | ret = -ENOMEM; | |
1170 | goto error_type; | |
1171 | } | |
1172 | memcpy(obj->u.counter.data, src->u.counter.data, obj->size); | |
1173 | break; | |
1174 | } | |
1175 | ||
1176 | case LTTNG_UST_OBJECT_TYPE_COUNTER_GLOBAL: | |
1177 | { | |
1178 | if (src->u.counter_global.shm_fd >= 0) { | |
1179 | obj->u.counter_global.shm_fd = | |
1180 | dup(src->u.counter_global.shm_fd); | |
1181 | if (obj->u.counter_global.shm_fd < 0) { | |
1182 | ret = errno; | |
1183 | goto error_type; | |
1184 | } | |
1185 | } | |
1186 | break; | |
1187 | } | |
1188 | ||
1189 | case LTTNG_UST_OBJECT_TYPE_COUNTER_CPU: | |
1190 | { | |
1191 | obj->u.counter_cpu.cpu_nr = src->u.counter_cpu.cpu_nr; | |
1192 | if (src->u.counter_cpu.shm_fd >= 0) { | |
1193 | obj->u.counter_cpu.shm_fd = | |
1194 | dup(src->u.counter_cpu.shm_fd); | |
1195 | if (obj->u.counter_cpu.shm_fd < 0) { | |
1196 | ret = errno; | |
1197 | goto error_type; | |
1198 | } | |
1199 | } | |
1200 | break; | |
1201 | } | |
1202 | ||
12f3dabc MD |
1203 | default: |
1204 | ret = -EINVAL; | |
1205 | goto error_type; | |
1206 | } | |
1207 | ||
1208 | *dest = obj; | |
1209 | return 0; | |
1210 | ||
1211 | error_type: | |
1212 | free(obj); | |
1213 | error: | |
1214 | return ret; | |
1215 | } | |
1216 | ||
74d81a6c MD |
1217 | |
1218 | /* Buffer operations */ | |
1219 | ||
5ea386c3 MD |
1220 | int ustctl_get_nr_stream_per_channel(void) |
1221 | { | |
1222 | return num_possible_cpus(); | |
1223 | } | |
1224 | ||
74d81a6c | 1225 | struct ustctl_consumer_channel * |
5ea386c3 MD |
1226 | ustctl_create_channel(struct ustctl_consumer_channel_attr *attr, |
1227 | const int *stream_fds, int nr_stream_fds) | |
74d81a6c MD |
1228 | { |
1229 | struct ustctl_consumer_channel *chan; | |
1230 | const char *transport_name; | |
1231 | struct lttng_transport *transport; | |
1232 | ||
1233 | switch (attr->type) { | |
1234 | case LTTNG_UST_CHAN_PER_CPU: | |
1235 | if (attr->output == LTTNG_UST_MMAP) { | |
34a91bdb MD |
1236 | if (attr->overwrite) { |
1237 | if (attr->read_timer_interval == 0) { | |
1238 | transport_name = "relay-overwrite-mmap"; | |
1239 | } else { | |
1240 | transport_name = "relay-overwrite-rt-mmap"; | |
1241 | } | |
1242 | } else { | |
1243 | if (attr->read_timer_interval == 0) { | |
1244 | transport_name = "relay-discard-mmap"; | |
1245 | } else { | |
1246 | transport_name = "relay-discard-rt-mmap"; | |
1247 | } | |
1248 | } | |
74d81a6c MD |
1249 | } else { |
1250 | return NULL; | |
1251 | } | |
c1fca457 | 1252 | break; |
74d81a6c MD |
1253 | case LTTNG_UST_CHAN_METADATA: |
1254 | if (attr->output == LTTNG_UST_MMAP) | |
1255 | transport_name = "relay-metadata-mmap"; | |
1256 | else | |
1257 | return NULL; | |
c1fca457 MD |
1258 | break; |
1259 | default: | |
74d81a6c | 1260 | transport_name = "<unknown>"; |
c1fca457 MD |
1261 | return NULL; |
1262 | } | |
74d81a6c MD |
1263 | |
1264 | transport = lttng_transport_find(transport_name); | |
1265 | if (!transport) { | |
1266 | DBG("LTTng transport %s not found\n", | |
32ce8569 | 1267 | transport_name); |
74d81a6c | 1268 | return NULL; |
7a784989 | 1269 | } |
74d81a6c MD |
1270 | |
1271 | chan = zmalloc(sizeof(*chan)); | |
1272 | if (!chan) | |
1273 | return NULL; | |
1274 | ||
1275 | chan->chan = transport->ops.channel_create(transport_name, NULL, | |
32ce8569 | 1276 | attr->subbuf_size, attr->num_subbuf, |
74d81a6c | 1277 | attr->switch_timer_interval, |
32ce8569 | 1278 | attr->read_timer_interval, |
a9ff648c | 1279 | attr->uuid, attr->chan_id, |
b2c5f61a MD |
1280 | stream_fds, nr_stream_fds, |
1281 | attr->blocking_timeout); | |
74d81a6c MD |
1282 | if (!chan->chan) { |
1283 | goto chan_error; | |
1284 | } | |
1285 | chan->chan->ops = &transport->ops; | |
1286 | memcpy(&chan->attr, attr, sizeof(chan->attr)); | |
cb7378b3 MD |
1287 | chan->wait_fd = ustctl_channel_get_wait_fd(chan); |
1288 | chan->wakeup_fd = ustctl_channel_get_wakeup_fd(chan); | |
74d81a6c MD |
1289 | return chan; |
1290 | ||
1291 | chan_error: | |
1292 | free(chan); | |
1293 | return NULL; | |
57773204 MD |
1294 | } |
1295 | ||
74d81a6c | 1296 | void ustctl_destroy_channel(struct ustctl_consumer_channel *chan) |
57773204 | 1297 | { |
b24e4e91 MD |
1298 | (void) ustctl_channel_close_wait_fd(chan); |
1299 | (void) ustctl_channel_close_wakeup_fd(chan); | |
74d81a6c MD |
1300 | chan->chan->ops->channel_destroy(chan->chan); |
1301 | free(chan); | |
1302 | } | |
1303 | ||
1304 | int ustctl_send_channel_to_sessiond(int sock, | |
1305 | struct ustctl_consumer_channel *channel) | |
1306 | { | |
1307 | struct shm_object_table *table; | |
57773204 | 1308 | |
74d81a6c MD |
1309 | table = channel->chan->handle->table; |
1310 | if (table->size <= 0) | |
9bfc503d | 1311 | return -EINVAL; |
74d81a6c MD |
1312 | return ustctl_send_channel(sock, |
1313 | channel->attr.type, | |
1314 | table->objects[0].memory_map, | |
1315 | table->objects[0].memory_map_size, | |
ff0f5728 | 1316 | channel->wakeup_fd, |
74d81a6c MD |
1317 | 0); |
1318 | } | |
9bfc503d | 1319 | |
74d81a6c MD |
1320 | int ustctl_send_stream_to_sessiond(int sock, |
1321 | struct ustctl_consumer_stream *stream) | |
1322 | { | |
1323 | if (!stream) | |
1324 | return ustctl_send_stream(sock, -1U, -1U, -1, -1, 0); | |
1325 | ||
1326 | return ustctl_send_stream(sock, | |
1327 | stream->cpu, | |
1328 | stream->memory_map_size, | |
1329 | stream->shm_fd, stream->wakeup_fd, | |
1330 | 0); | |
57773204 MD |
1331 | } |
1332 | ||
c9023c93 MD |
1333 | int ustctl_write_metadata_to_channel( |
1334 | struct ustctl_consumer_channel *channel, | |
1335 | const char *metadata_str, /* NOT null-terminated */ | |
1336 | size_t len) /* metadata length */ | |
1337 | { | |
1338 | struct lttng_ust_lib_ring_buffer_ctx ctx; | |
1339 | struct lttng_channel *chan = channel->chan; | |
1340 | const char *str = metadata_str; | |
1341 | int ret = 0, waitret; | |
1342 | size_t reserve_len, pos; | |
1343 | ||
1344 | for (pos = 0; pos < len; pos += reserve_len) { | |
1345 | reserve_len = min_t(size_t, | |
1346 | chan->ops->packet_avail_size(chan->chan, chan->handle), | |
1347 | len - pos); | |
1348 | lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL, reserve_len, | |
53569322 | 1349 | sizeof(char), -1, chan->handle, NULL); |
c9023c93 MD |
1350 | /* |
1351 | * We don't care about metadata buffer's records lost | |
1352 | * count, because we always retry here. Report error if | |
1353 | * we need to bail out after timeout or being | |
1354 | * interrupted. | |
1355 | */ | |
1356 | waitret = wait_cond_interruptible_timeout( | |
1357 | ({ | |
1358 | ret = chan->ops->event_reserve(&ctx, 0); | |
1359 | ret != -ENOBUFS || !ret; | |
1360 | }), | |
1361 | LTTNG_METADATA_TIMEOUT_MSEC); | |
1362 | if (waitret == -ETIMEDOUT || waitret == -EINTR || ret) { | |
1363 | DBG("LTTng: Failure to write metadata to buffers (%s)\n", | |
1364 | waitret == -EINTR ? "interrupted" : | |
1365 | (ret == -ENOBUFS ? "timeout" : "I/O error")); | |
1366 | if (waitret == -EINTR) | |
1367 | ret = waitret; | |
1368 | goto end; | |
1369 | } | |
1370 | chan->ops->event_write(&ctx, &str[pos], reserve_len); | |
1371 | chan->ops->event_commit(&ctx); | |
1372 | } | |
1373 | end: | |
1374 | return ret; | |
1375 | } | |
1376 | ||
3ef94b0e JD |
1377 | /* |
1378 | * Write at most one packet in the channel. | |
1379 | * Returns the number of bytes written on success, < 0 on error. | |
1380 | */ | |
1381 | ssize_t ustctl_write_one_packet_to_channel( | |
1382 | struct ustctl_consumer_channel *channel, | |
1383 | const char *metadata_str, /* NOT null-terminated */ | |
1384 | size_t len) /* metadata length */ | |
1385 | { | |
1386 | struct lttng_ust_lib_ring_buffer_ctx ctx; | |
1387 | struct lttng_channel *chan = channel->chan; | |
1388 | const char *str = metadata_str; | |
1389 | ssize_t reserve_len; | |
1390 | int ret; | |
1391 | ||
1392 | reserve_len = min_t(ssize_t, | |
1393 | chan->ops->packet_avail_size(chan->chan, chan->handle), | |
1394 | len); | |
1395 | lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL, reserve_len, | |
53569322 | 1396 | sizeof(char), -1, chan->handle, NULL); |
3ef94b0e JD |
1397 | ret = chan->ops->event_reserve(&ctx, 0); |
1398 | if (ret != 0) { | |
1399 | DBG("LTTng: event reservation failed"); | |
1400 | assert(ret < 0); | |
1401 | reserve_len = ret; | |
1402 | goto end; | |
1403 | } | |
1404 | chan->ops->event_write(&ctx, str, reserve_len); | |
1405 | chan->ops->event_commit(&ctx); | |
1406 | ||
1407 | end: | |
1408 | return reserve_len; | |
1409 | } | |
1410 | ||
ff0f5728 MD |
1411 | int ustctl_channel_close_wait_fd(struct ustctl_consumer_channel *consumer_chan) |
1412 | { | |
1413 | struct channel *chan; | |
cb7378b3 | 1414 | int ret; |
ff0f5728 MD |
1415 | |
1416 | chan = consumer_chan->chan->chan; | |
cb7378b3 | 1417 | ret = ring_buffer_channel_close_wait_fd(&chan->backend.config, |
ff0f5728 | 1418 | chan, chan->handle); |
cb7378b3 MD |
1419 | if (!ret) |
1420 | consumer_chan->wait_fd = -1; | |
1421 | return ret; | |
ff0f5728 MD |
1422 | } |
1423 | ||
1424 | int ustctl_channel_close_wakeup_fd(struct ustctl_consumer_channel *consumer_chan) | |
1425 | { | |
1426 | struct channel *chan; | |
cb7378b3 | 1427 | int ret; |
ff0f5728 MD |
1428 | |
1429 | chan = consumer_chan->chan->chan; | |
cb7378b3 | 1430 | ret = ring_buffer_channel_close_wakeup_fd(&chan->backend.config, |
ff0f5728 | 1431 | chan, chan->handle); |
cb7378b3 MD |
1432 | if (!ret) |
1433 | consumer_chan->wakeup_fd = -1; | |
1434 | return ret; | |
ff0f5728 MD |
1435 | } |
1436 | ||
74d81a6c | 1437 | int ustctl_stream_close_wait_fd(struct ustctl_consumer_stream *stream) |
5224b5c8 MD |
1438 | { |
1439 | struct channel *chan; | |
1440 | ||
74d81a6c | 1441 | chan = stream->chan->chan->chan; |
ff0f5728 | 1442 | return ring_buffer_stream_close_wait_fd(&chan->backend.config, |
74d81a6c | 1443 | chan, stream->handle, stream->cpu); |
5224b5c8 MD |
1444 | } |
1445 | ||
74d81a6c | 1446 | int ustctl_stream_close_wakeup_fd(struct ustctl_consumer_stream *stream) |
6e922b24 | 1447 | { |
66bdd22a | 1448 | struct channel *chan; |
74d81a6c MD |
1449 | |
1450 | chan = stream->chan->chan->chan; | |
ff0f5728 | 1451 | return ring_buffer_stream_close_wakeup_fd(&chan->backend.config, |
74d81a6c MD |
1452 | chan, stream->handle, stream->cpu); |
1453 | } | |
1454 | ||
1455 | struct ustctl_consumer_stream * | |
1456 | ustctl_create_stream(struct ustctl_consumer_channel *channel, | |
1457 | int cpu) | |
1458 | { | |
1459 | struct ustctl_consumer_stream *stream; | |
1460 | struct lttng_ust_shm_handle *handle; | |
1461 | struct channel *chan; | |
1462 | int shm_fd, wait_fd, wakeup_fd; | |
1463 | uint64_t memory_map_size; | |
4cfec15c | 1464 | struct lttng_ust_lib_ring_buffer *buf; |
6e922b24 MD |
1465 | int ret; |
1466 | ||
74d81a6c MD |
1467 | if (!channel) |
1468 | return NULL; | |
1469 | handle = channel->chan->handle; | |
9bfc503d MD |
1470 | if (!handle) |
1471 | return NULL; | |
1472 | ||
74d81a6c | 1473 | chan = channel->chan->chan; |
6e922b24 | 1474 | buf = channel_get_ring_buffer(&chan->backend.config, |
74d81a6c MD |
1475 | chan, cpu, handle, &shm_fd, &wait_fd, |
1476 | &wakeup_fd, &memory_map_size); | |
6e922b24 MD |
1477 | if (!buf) |
1478 | return NULL; | |
74d81a6c | 1479 | ret = lib_ring_buffer_open_read(buf, handle); |
6e922b24 MD |
1480 | if (ret) |
1481 | return NULL; | |
74d81a6c MD |
1482 | |
1483 | stream = zmalloc(sizeof(*stream)); | |
1484 | if (!stream) | |
1485 | goto alloc_error; | |
1486 | stream->handle = handle; | |
1487 | stream->buf = buf; | |
1488 | stream->chan = channel; | |
1489 | stream->shm_fd = shm_fd; | |
1490 | stream->wait_fd = wait_fd; | |
1491 | stream->wakeup_fd = wakeup_fd; | |
1492 | stream->memory_map_size = memory_map_size; | |
1493 | stream->cpu = cpu; | |
1494 | return stream; | |
1495 | ||
1496 | alloc_error: | |
1497 | return NULL; | |
1498 | } | |
1499 | ||
1500 | void ustctl_destroy_stream(struct ustctl_consumer_stream *stream) | |
1501 | { | |
1502 | struct lttng_ust_lib_ring_buffer *buf; | |
1503 | struct ustctl_consumer_channel *consumer_chan; | |
1504 | ||
1505 | assert(stream); | |
1506 | buf = stream->buf; | |
1507 | consumer_chan = stream->chan; | |
b24e4e91 MD |
1508 | (void) ustctl_stream_close_wait_fd(stream); |
1509 | (void) ustctl_stream_close_wakeup_fd(stream); | |
74d81a6c MD |
1510 | lib_ring_buffer_release_read(buf, consumer_chan->chan->handle); |
1511 | free(stream); | |
6e922b24 MD |
1512 | } |
1513 | ||
ff0f5728 MD |
1514 | int ustctl_channel_get_wait_fd(struct ustctl_consumer_channel *chan) |
1515 | { | |
1516 | if (!chan) | |
1517 | return -EINVAL; | |
1518 | return shm_get_wait_fd(chan->chan->handle, | |
1519 | &chan->chan->handle->chan._ref); | |
1520 | } | |
1521 | ||
1522 | int ustctl_channel_get_wakeup_fd(struct ustctl_consumer_channel *chan) | |
1523 | { | |
1524 | if (!chan) | |
1525 | return -EINVAL; | |
1526 | return shm_get_wakeup_fd(chan->chan->handle, | |
1527 | &chan->chan->handle->chan._ref); | |
1528 | } | |
1529 | ||
1530 | int ustctl_stream_get_wait_fd(struct ustctl_consumer_stream *stream) | |
6e922b24 | 1531 | { |
74d81a6c MD |
1532 | struct lttng_ust_lib_ring_buffer *buf; |
1533 | struct ustctl_consumer_channel *consumer_chan; | |
1534 | ||
1535 | if (!stream) | |
1536 | return -EINVAL; | |
1537 | buf = stream->buf; | |
1538 | consumer_chan = stream->chan; | |
1539 | return shm_get_wait_fd(consumer_chan->chan->handle, &buf->self._ref); | |
1540 | } | |
1541 | ||
ff0f5728 | 1542 | int ustctl_stream_get_wakeup_fd(struct ustctl_consumer_stream *stream) |
74d81a6c MD |
1543 | { |
1544 | struct lttng_ust_lib_ring_buffer *buf; | |
1545 | struct ustctl_consumer_channel *consumer_chan; | |
1546 | ||
1547 | if (!stream) | |
1548 | return -EINVAL; | |
1549 | buf = stream->buf; | |
1550 | consumer_chan = stream->chan; | |
1551 | return shm_get_wakeup_fd(consumer_chan->chan->handle, &buf->self._ref); | |
6e922b24 MD |
1552 | } |
1553 | ||
57773204 MD |
1554 | /* For mmap mode, readable without "get" operation */ |
1555 | ||
74d81a6c | 1556 | void *ustctl_get_mmap_base(struct ustctl_consumer_stream *stream) |
9095efe9 | 1557 | { |
74d81a6c MD |
1558 | struct lttng_ust_lib_ring_buffer *buf; |
1559 | struct ustctl_consumer_channel *consumer_chan; | |
1560 | ||
1561 | if (!stream) | |
9bfc503d | 1562 | return NULL; |
74d81a6c MD |
1563 | buf = stream->buf; |
1564 | consumer_chan = stream->chan; | |
1565 | return shmp(consumer_chan->chan->handle, buf->backend.memory_map); | |
9095efe9 MD |
1566 | } |
1567 | ||
57773204 | 1568 | /* returns the length to mmap. */ |
74d81a6c | 1569 | int ustctl_get_mmap_len(struct ustctl_consumer_stream *stream, |
57773204 MD |
1570 | unsigned long *len) |
1571 | { | |
74d81a6c | 1572 | struct ustctl_consumer_channel *consumer_chan; |
57773204 | 1573 | unsigned long mmap_buf_len; |
66bdd22a | 1574 | struct channel *chan; |
57773204 | 1575 | |
74d81a6c | 1576 | if (!stream) |
9bfc503d | 1577 | return -EINVAL; |
74d81a6c MD |
1578 | consumer_chan = stream->chan; |
1579 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1580 | if (chan->backend.config.output != RING_BUFFER_MMAP) |
1581 | return -EINVAL; | |
1582 | mmap_buf_len = chan->backend.buf_size; | |
1583 | if (chan->backend.extra_reader_sb) | |
1584 | mmap_buf_len += chan->backend.subbuf_size; | |
1585 | if (mmap_buf_len > INT_MAX) | |
1586 | return -EFBIG; | |
1587 | *len = mmap_buf_len; | |
1588 | return 0; | |
1589 | } | |
1590 | ||
1591 | /* returns the maximum size for sub-buffers. */ | |
74d81a6c | 1592 | int ustctl_get_max_subbuf_size(struct ustctl_consumer_stream *stream, |
57773204 MD |
1593 | unsigned long *len) |
1594 | { | |
74d81a6c | 1595 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1596 | struct channel *chan; |
57773204 | 1597 | |
74d81a6c | 1598 | if (!stream) |
9bfc503d | 1599 | return -EINVAL; |
74d81a6c MD |
1600 | consumer_chan = stream->chan; |
1601 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1602 | *len = chan->backend.subbuf_size; |
1603 | return 0; | |
1604 | } | |
1605 | ||
1606 | /* | |
1607 | * For mmap mode, operate on the current packet (between get/put or | |
1608 | * get_next/put_next). | |
1609 | */ | |
1610 | ||
1611 | /* returns the offset of the subbuffer belonging to the mmap reader. */ | |
74d81a6c MD |
1612 | int ustctl_get_mmap_read_offset(struct ustctl_consumer_stream *stream, |
1613 | unsigned long *off) | |
57773204 | 1614 | { |
66bdd22a | 1615 | struct channel *chan; |
57773204 | 1616 | unsigned long sb_bindex; |
74d81a6c MD |
1617 | struct lttng_ust_lib_ring_buffer *buf; |
1618 | struct ustctl_consumer_channel *consumer_chan; | |
34daae3e MD |
1619 | struct lttng_ust_lib_ring_buffer_backend_pages_shmp *barray_idx; |
1620 | struct lttng_ust_lib_ring_buffer_backend_pages *pages; | |
57773204 | 1621 | |
74d81a6c | 1622 | if (!stream) |
9bfc503d | 1623 | return -EINVAL; |
74d81a6c MD |
1624 | buf = stream->buf; |
1625 | consumer_chan = stream->chan; | |
1626 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1627 | if (chan->backend.config.output != RING_BUFFER_MMAP) |
1628 | return -EINVAL; | |
1629 | sb_bindex = subbuffer_id_get_index(&chan->backend.config, | |
32ce8569 | 1630 | buf->backend.buf_rsb.id); |
34daae3e MD |
1631 | barray_idx = shmp_index(consumer_chan->chan->handle, buf->backend.array, |
1632 | sb_bindex); | |
1633 | if (!barray_idx) | |
1634 | return -EINVAL; | |
1635 | pages = shmp(consumer_chan->chan->handle, barray_idx->shmp); | |
1636 | if (!pages) | |
1637 | return -EINVAL; | |
1638 | *off = pages->mmap_offset; | |
57773204 MD |
1639 | return 0; |
1640 | } | |
1641 | ||
1642 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
74d81a6c MD |
1643 | int ustctl_get_subbuf_size(struct ustctl_consumer_stream *stream, |
1644 | unsigned long *len) | |
57773204 | 1645 | { |
74d81a6c | 1646 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1647 | struct channel *chan; |
74d81a6c | 1648 | struct lttng_ust_lib_ring_buffer *buf; |
57773204 | 1649 | |
74d81a6c | 1650 | if (!stream) |
9bfc503d MD |
1651 | return -EINVAL; |
1652 | ||
74d81a6c MD |
1653 | buf = stream->buf; |
1654 | consumer_chan = stream->chan; | |
1655 | chan = consumer_chan->chan->chan; | |
57773204 | 1656 | *len = lib_ring_buffer_get_read_data_size(&chan->backend.config, buf, |
74d81a6c | 1657 | consumer_chan->chan->handle); |
57773204 MD |
1658 | return 0; |
1659 | } | |
1660 | ||
1661 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
74d81a6c MD |
1662 | int ustctl_get_padded_subbuf_size(struct ustctl_consumer_stream *stream, |
1663 | unsigned long *len) | |
57773204 | 1664 | { |
74d81a6c | 1665 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1666 | struct channel *chan; |
74d81a6c | 1667 | struct lttng_ust_lib_ring_buffer *buf; |
57773204 | 1668 | |
74d81a6c | 1669 | if (!stream) |
9bfc503d | 1670 | return -EINVAL; |
74d81a6c MD |
1671 | buf = stream->buf; |
1672 | consumer_chan = stream->chan; | |
1673 | chan = consumer_chan->chan->chan; | |
57773204 | 1674 | *len = lib_ring_buffer_get_read_data_size(&chan->backend.config, buf, |
74d81a6c | 1675 | consumer_chan->chan->handle); |
b72687b8 | 1676 | *len = LTTNG_UST_PAGE_ALIGN(*len); |
57773204 MD |
1677 | return 0; |
1678 | } | |
1679 | ||
1680 | /* Get exclusive read access to the next sub-buffer that can be read. */ | |
74d81a6c | 1681 | int ustctl_get_next_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1682 | { |
74d81a6c MD |
1683 | struct lttng_ust_lib_ring_buffer *buf; |
1684 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1685 | |
74d81a6c MD |
1686 | if (!stream) |
1687 | return -EINVAL; | |
1688 | buf = stream->buf; | |
1689 | consumer_chan = stream->chan; | |
1690 | return lib_ring_buffer_get_next_subbuf(buf, | |
1691 | consumer_chan->chan->handle); | |
57773204 MD |
1692 | } |
1693 | ||
1694 | ||
1695 | /* Release exclusive sub-buffer access, move consumer forward. */ | |
74d81a6c | 1696 | int ustctl_put_next_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1697 | { |
74d81a6c MD |
1698 | struct lttng_ust_lib_ring_buffer *buf; |
1699 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1700 | |
74d81a6c MD |
1701 | if (!stream) |
1702 | return -EINVAL; | |
1703 | buf = stream->buf; | |
1704 | consumer_chan = stream->chan; | |
1705 | lib_ring_buffer_put_next_subbuf(buf, consumer_chan->chan->handle); | |
57773204 MD |
1706 | return 0; |
1707 | } | |
1708 | ||
1709 | /* snapshot */ | |
1710 | ||
1711 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
74d81a6c | 1712 | int ustctl_snapshot(struct ustctl_consumer_stream *stream) |
57773204 | 1713 | { |
74d81a6c MD |
1714 | struct lttng_ust_lib_ring_buffer *buf; |
1715 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1716 | |
74d81a6c MD |
1717 | if (!stream) |
1718 | return -EINVAL; | |
1719 | buf = stream->buf; | |
1720 | consumer_chan = stream->chan; | |
57773204 | 1721 | return lib_ring_buffer_snapshot(buf, &buf->cons_snapshot, |
74d81a6c | 1722 | &buf->prod_snapshot, consumer_chan->chan->handle); |
57773204 MD |
1723 | } |
1724 | ||
f45930b7 JG |
1725 | /* |
1726 | * Get a snapshot of the current ring buffer producer and consumer positions | |
1727 | * even if the consumed and produced positions are contained within the same | |
1728 | * subbuffer. | |
1729 | */ | |
1730 | int ustctl_snapshot_sample_positions(struct ustctl_consumer_stream *stream) | |
1731 | { | |
1732 | struct lttng_ust_lib_ring_buffer *buf; | |
1733 | struct ustctl_consumer_channel *consumer_chan; | |
1734 | ||
1735 | if (!stream) | |
1736 | return -EINVAL; | |
1737 | buf = stream->buf; | |
1738 | consumer_chan = stream->chan; | |
1739 | return lib_ring_buffer_snapshot_sample_positions(buf, | |
1740 | &buf->cons_snapshot, &buf->prod_snapshot, | |
1741 | consumer_chan->chan->handle); | |
1742 | } | |
1743 | ||
57773204 | 1744 | /* Get the consumer position (iteration start) */ |
74d81a6c MD |
1745 | int ustctl_snapshot_get_consumed(struct ustctl_consumer_stream *stream, |
1746 | unsigned long *pos) | |
57773204 | 1747 | { |
74d81a6c | 1748 | struct lttng_ust_lib_ring_buffer *buf; |
9bfc503d | 1749 | |
74d81a6c MD |
1750 | if (!stream) |
1751 | return -EINVAL; | |
1752 | buf = stream->buf; | |
57773204 MD |
1753 | *pos = buf->cons_snapshot; |
1754 | return 0; | |
1755 | } | |
1756 | ||
1757 | /* Get the producer position (iteration end) */ | |
74d81a6c MD |
1758 | int ustctl_snapshot_get_produced(struct ustctl_consumer_stream *stream, |
1759 | unsigned long *pos) | |
57773204 | 1760 | { |
74d81a6c | 1761 | struct lttng_ust_lib_ring_buffer *buf; |
9bfc503d | 1762 | |
74d81a6c MD |
1763 | if (!stream) |
1764 | return -EINVAL; | |
1765 | buf = stream->buf; | |
57773204 MD |
1766 | *pos = buf->prod_snapshot; |
1767 | return 0; | |
1768 | } | |
1769 | ||
1770 | /* Get exclusive read access to the specified sub-buffer position */ | |
74d81a6c MD |
1771 | int ustctl_get_subbuf(struct ustctl_consumer_stream *stream, |
1772 | unsigned long *pos) | |
57773204 | 1773 | { |
74d81a6c MD |
1774 | struct lttng_ust_lib_ring_buffer *buf; |
1775 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1776 | |
74d81a6c MD |
1777 | if (!stream) |
1778 | return -EINVAL; | |
1779 | buf = stream->buf; | |
1780 | consumer_chan = stream->chan; | |
1781 | return lib_ring_buffer_get_subbuf(buf, *pos, | |
1782 | consumer_chan->chan->handle); | |
57773204 MD |
1783 | } |
1784 | ||
1785 | /* Release exclusive sub-buffer access */ | |
74d81a6c | 1786 | int ustctl_put_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1787 | { |
74d81a6c MD |
1788 | struct lttng_ust_lib_ring_buffer *buf; |
1789 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1790 | |
74d81a6c MD |
1791 | if (!stream) |
1792 | return -EINVAL; | |
1793 | buf = stream->buf; | |
1794 | consumer_chan = stream->chan; | |
1795 | lib_ring_buffer_put_subbuf(buf, consumer_chan->chan->handle); | |
57773204 MD |
1796 | return 0; |
1797 | } | |
1798 | ||
74d81a6c | 1799 | void ustctl_flush_buffer(struct ustctl_consumer_stream *stream, |
b52190f2 | 1800 | int producer_active) |
57773204 | 1801 | { |
74d81a6c MD |
1802 | struct lttng_ust_lib_ring_buffer *buf; |
1803 | struct ustctl_consumer_channel *consumer_chan; | |
1804 | ||
1805 | assert(stream); | |
1806 | buf = stream->buf; | |
1807 | consumer_chan = stream->chan; | |
b52190f2 MD |
1808 | lib_ring_buffer_switch_slow(buf, |
1809 | producer_active ? SWITCH_ACTIVE : SWITCH_FLUSH, | |
74d81a6c MD |
1810 | consumer_chan->chan->handle); |
1811 | } | |
1812 | ||
beca55a1 MD |
1813 | void ustctl_clear_buffer(struct ustctl_consumer_stream *stream) |
1814 | { | |
1815 | struct lttng_ust_lib_ring_buffer *buf; | |
1816 | struct ustctl_consumer_channel *consumer_chan; | |
1817 | ||
1818 | assert(stream); | |
1819 | buf = stream->buf; | |
1820 | consumer_chan = stream->chan; | |
1821 | lib_ring_buffer_switch_slow(buf, SWITCH_ACTIVE, | |
1822 | consumer_chan->chan->handle); | |
1823 | lib_ring_buffer_clear_reader(buf, consumer_chan->chan->handle); | |
1824 | } | |
1825 | ||
b2f3252a JD |
1826 | static |
1827 | struct lttng_ust_client_lib_ring_buffer_client_cb *get_client_cb( | |
1828 | struct lttng_ust_lib_ring_buffer *buf, | |
1829 | struct lttng_ust_shm_handle *handle) | |
1830 | { | |
1831 | struct channel *chan; | |
1832 | const struct lttng_ust_lib_ring_buffer_config *config; | |
1833 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1834 | ||
1835 | chan = shmp(handle, buf->backend.chan); | |
34daae3e MD |
1836 | if (!chan) |
1837 | return NULL; | |
b2f3252a JD |
1838 | config = &chan->backend.config; |
1839 | if (!config->cb_ptr) | |
1840 | return NULL; | |
1841 | client_cb = caa_container_of(config->cb_ptr, | |
1842 | struct lttng_ust_client_lib_ring_buffer_client_cb, | |
1843 | parent); | |
1844 | return client_cb; | |
1845 | } | |
1846 | ||
1847 | int ustctl_get_timestamp_begin(struct ustctl_consumer_stream *stream, | |
1848 | uint64_t *timestamp_begin) | |
1849 | { | |
1850 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1851 | struct lttng_ust_lib_ring_buffer *buf; |
1852 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1853 | |
1854 | if (!stream || !timestamp_begin) | |
1855 | return -EINVAL; | |
e1919a41 MD |
1856 | buf = stream->buf; |
1857 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1858 | client_cb = get_client_cb(buf, handle); |
1859 | if (!client_cb) | |
1860 | return -ENOSYS; | |
1861 | return client_cb->timestamp_begin(buf, handle, timestamp_begin); | |
1862 | } | |
1863 | ||
1864 | int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream, | |
1865 | uint64_t *timestamp_end) | |
1866 | { | |
1867 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1868 | struct lttng_ust_lib_ring_buffer *buf; |
1869 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1870 | |
1871 | if (!stream || !timestamp_end) | |
1872 | return -EINVAL; | |
e1919a41 MD |
1873 | buf = stream->buf; |
1874 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1875 | client_cb = get_client_cb(buf, handle); |
1876 | if (!client_cb) | |
1877 | return -ENOSYS; | |
1878 | return client_cb->timestamp_end(buf, handle, timestamp_end); | |
1879 | } | |
1880 | ||
1881 | int ustctl_get_events_discarded(struct ustctl_consumer_stream *stream, | |
1882 | uint64_t *events_discarded) | |
1883 | { | |
1884 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1885 | struct lttng_ust_lib_ring_buffer *buf; |
1886 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1887 | |
1888 | if (!stream || !events_discarded) | |
1889 | return -EINVAL; | |
e1919a41 MD |
1890 | buf = stream->buf; |
1891 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1892 | client_cb = get_client_cb(buf, handle); |
1893 | if (!client_cb) | |
1894 | return -ENOSYS; | |
1895 | return client_cb->events_discarded(buf, handle, events_discarded); | |
1896 | } | |
1897 | ||
1898 | int ustctl_get_content_size(struct ustctl_consumer_stream *stream, | |
1899 | uint64_t *content_size) | |
1900 | { | |
1901 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1902 | struct lttng_ust_lib_ring_buffer *buf; |
1903 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1904 | |
1905 | if (!stream || !content_size) | |
1906 | return -EINVAL; | |
e1919a41 MD |
1907 | buf = stream->buf; |
1908 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1909 | client_cb = get_client_cb(buf, handle); |
1910 | if (!client_cb) | |
1911 | return -ENOSYS; | |
1912 | return client_cb->content_size(buf, handle, content_size); | |
1913 | } | |
1914 | ||
1915 | int ustctl_get_packet_size(struct ustctl_consumer_stream *stream, | |
1916 | uint64_t *packet_size) | |
1917 | { | |
1918 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1919 | struct lttng_ust_lib_ring_buffer *buf; |
1920 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1921 | |
1922 | if (!stream || !packet_size) | |
1923 | return -EINVAL; | |
e1919a41 MD |
1924 | buf = stream->buf; |
1925 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1926 | client_cb = get_client_cb(buf, handle); |
1927 | if (!client_cb) | |
1928 | return -ENOSYS; | |
1929 | return client_cb->packet_size(buf, handle, packet_size); | |
1930 | } | |
1931 | ||
1932 | int ustctl_get_stream_id(struct ustctl_consumer_stream *stream, | |
1933 | uint64_t *stream_id) | |
1934 | { | |
1935 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1936 | struct lttng_ust_lib_ring_buffer *buf; |
1937 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1938 | |
1939 | if (!stream || !stream_id) | |
1940 | return -EINVAL; | |
e1919a41 MD |
1941 | buf = stream->buf; |
1942 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1943 | client_cb = get_client_cb(buf, handle); |
1944 | if (!client_cb) | |
1945 | return -ENOSYS; | |
1946 | return client_cb->stream_id(buf, handle, stream_id); | |
1947 | } | |
1948 | ||
fca361e8 JD |
1949 | int ustctl_get_current_timestamp(struct ustctl_consumer_stream *stream, |
1950 | uint64_t *ts) | |
1951 | { | |
1952 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1953 | struct lttng_ust_lib_ring_buffer *buf; |
1954 | struct lttng_ust_shm_handle *handle; | |
fca361e8 JD |
1955 | |
1956 | if (!stream || !ts) | |
1957 | return -EINVAL; | |
e1919a41 MD |
1958 | buf = stream->buf; |
1959 | handle = stream->chan->chan->handle; | |
fca361e8 JD |
1960 | client_cb = get_client_cb(buf, handle); |
1961 | if (!client_cb || !client_cb->current_timestamp) | |
1962 | return -ENOSYS; | |
1963 | return client_cb->current_timestamp(buf, handle, ts); | |
1964 | } | |
1965 | ||
1ff31389 JD |
1966 | int ustctl_get_sequence_number(struct ustctl_consumer_stream *stream, |
1967 | uint64_t *seq) | |
1968 | { | |
1969 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1970 | struct lttng_ust_lib_ring_buffer *buf; | |
1971 | struct lttng_ust_shm_handle *handle; | |
1972 | ||
1973 | if (!stream || !seq) | |
1974 | return -EINVAL; | |
1975 | buf = stream->buf; | |
1976 | handle = stream->chan->chan->handle; | |
1977 | client_cb = get_client_cb(buf, handle); | |
1978 | if (!client_cb || !client_cb->sequence_number) | |
1979 | return -ENOSYS; | |
1980 | return client_cb->sequence_number(buf, handle, seq); | |
1981 | } | |
1982 | ||
45a00b05 JD |
1983 | int ustctl_get_instance_id(struct ustctl_consumer_stream *stream, |
1984 | uint64_t *id) | |
1985 | { | |
1986 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1987 | struct lttng_ust_lib_ring_buffer *buf; | |
1988 | struct lttng_ust_shm_handle *handle; | |
1989 | ||
1990 | if (!stream || !id) | |
1991 | return -EINVAL; | |
1992 | buf = stream->buf; | |
1993 | handle = stream->chan->chan->handle; | |
1994 | client_cb = get_client_cb(buf, handle); | |
1995 | if (!client_cb) | |
1996 | return -ENOSYS; | |
1997 | return client_cb->instance_id(buf, handle, id); | |
1998 | } | |
1999 | ||
c62a3816 | 2000 | #ifdef LTTNG_UST_HAVE_PERF_EVENT |
57201bb3 MD |
2001 | |
2002 | int ustctl_has_perf_counters(void) | |
2003 | { | |
2004 | return 1; | |
2005 | } | |
2006 | ||
2007 | #else | |
2008 | ||
2009 | int ustctl_has_perf_counters(void) | |
2010 | { | |
2011 | return 0; | |
2012 | } | |
2013 | ||
2014 | #endif | |
2015 | ||
a834901f MD |
2016 | #ifdef __linux__ |
2017 | /* | |
2018 | * Override application pid/uid/gid with unix socket credentials. If | |
2019 | * the application announced a pid matching our view, it means it is | |
2020 | * within the same pid namespace, so expose the ppid provided by the | |
2021 | * application. | |
2022 | */ | |
2023 | static | |
2024 | int get_cred(int sock, | |
2025 | const struct ustctl_reg_msg *reg_msg, | |
2026 | uint32_t *pid, | |
2027 | uint32_t *ppid, | |
2028 | uint32_t *uid, | |
2029 | uint32_t *gid) | |
2030 | { | |
2031 | struct ucred ucred; | |
2032 | socklen_t ucred_len = sizeof(struct ucred); | |
2033 | int ret; | |
2034 | ||
2035 | ret = getsockopt(sock, SOL_SOCKET, SO_PEERCRED, &ucred, &ucred_len); | |
2036 | if (ret) { | |
2037 | return -LTTNG_UST_ERR_PEERCRED; | |
2038 | } | |
2039 | DBG("Unix socket peercred [ pid: %u, uid: %u, gid: %u ], " | |
2040 | "application registered claiming [ pid: %u, ppid: %u, uid: %u, gid: %u ]", | |
2041 | ucred.pid, ucred.uid, ucred.gid, | |
2042 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); | |
2043 | if (!ucred.pid) { | |
2044 | ERR("Unix socket credential pid=0. Refusing application in distinct, non-nested pid namespace."); | |
2045 | return -LTTNG_UST_ERR_PEERCRED_PID; | |
2046 | } | |
2047 | *pid = ucred.pid; | |
2048 | *uid = ucred.uid; | |
2049 | *gid = ucred.gid; | |
2050 | if (ucred.pid == reg_msg->pid) { | |
2051 | *ppid = reg_msg->ppid; | |
2052 | } else { | |
2053 | *ppid = 0; | |
2054 | } | |
2055 | return 0; | |
2056 | } | |
2057 | #elif defined(__FreeBSD__) | |
2058 | #include <sys/ucred.h> | |
e494a9cd | 2059 | #include <sys/un.h> |
a834901f MD |
2060 | |
2061 | /* | |
2062 | * Override application uid/gid with unix socket credentials. Use the | |
2063 | * first group of the cr_groups. | |
2064 | * Use the pid and ppid provided by the application on registration. | |
2065 | */ | |
2066 | static | |
2067 | int get_cred(int sock, | |
2068 | const struct ustctl_reg_msg *reg_msg, | |
2069 | uint32_t *pid, | |
2070 | uint32_t *ppid, | |
2071 | uint32_t *uid, | |
2072 | uint32_t *gid) | |
2073 | { | |
2074 | struct xucred xucred; | |
2075 | socklen_t xucred_len = sizeof(struct xucred); | |
2076 | int ret; | |
2077 | ||
2078 | ret = getsockopt(sock, SOL_SOCKET, LOCAL_PEERCRED, &xucred, &xucred_len); | |
2079 | if (ret) { | |
2080 | return -LTTNG_UST_ERR_PEERCRED; | |
2081 | } | |
2082 | if (xucred.cr_version != XUCRED_VERSION || xucred.cr_ngroups < 1) { | |
2083 | return -LTTNG_UST_ERR_PEERCRED; | |
2084 | } | |
2085 | DBG("Unix socket peercred [ uid: %u, gid: %u ], " | |
2086 | "application registered claiming [ pid: %d, ppid: %d, uid: %u, gid: %u ]", | |
e494a9cd | 2087 | xucred.cr_uid, xucred.cr_groups[0], |
a834901f MD |
2088 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); |
2089 | *pid = reg_msg->pid; | |
2090 | *ppid = reg_msg->ppid; | |
e494a9cd | 2091 | *uid = xucred.cr_uid; |
a834901f MD |
2092 | *gid = xucred.cr_groups[0]; |
2093 | return 0; | |
2094 | } | |
2095 | #else | |
2096 | #warning "Using insecure fallback: trusting user id provided by registered applications. Please consider implementing use of unix socket credentials on your platform." | |
2097 | static | |
2098 | int get_cred(int sock, | |
2099 | const struct ustctl_reg_msg *reg_msg, | |
2100 | uint32_t *pid, | |
2101 | uint32_t *ppid, | |
2102 | uint32_t *uid, | |
2103 | uint32_t *gid) | |
2104 | { | |
2105 | DBG("Application registered claiming [ pid: %u, ppid: %d, uid: %u, gid: %u ]", | |
2106 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); | |
2107 | *pid = reg_msg->pid; | |
2108 | *ppid = reg_msg->ppid; | |
2109 | *uid = reg_msg->uid; | |
2110 | *gid = reg_msg->gid; | |
2111 | return 0; | |
2112 | } | |
2113 | #endif | |
2114 | ||
32ce8569 MD |
2115 | /* |
2116 | * Returns 0 on success, negative error value on error. | |
2117 | */ | |
2118 | int ustctl_recv_reg_msg(int sock, | |
2119 | enum ustctl_socket_type *type, | |
2120 | uint32_t *major, | |
2121 | uint32_t *minor, | |
2122 | uint32_t *pid, | |
2123 | uint32_t *ppid, | |
2124 | uint32_t *uid, | |
2125 | uint32_t *gid, | |
2126 | uint32_t *bits_per_long, | |
2127 | uint32_t *uint8_t_alignment, | |
2128 | uint32_t *uint16_t_alignment, | |
2129 | uint32_t *uint32_t_alignment, | |
2130 | uint32_t *uint64_t_alignment, | |
2131 | uint32_t *long_alignment, | |
2132 | int *byte_order, | |
2133 | char *name) | |
2134 | { | |
2135 | ssize_t len; | |
2136 | struct ustctl_reg_msg reg_msg; | |
2137 | ||
2138 | len = ustcomm_recv_unix_sock(sock, ®_msg, sizeof(reg_msg)); | |
2139 | if (len > 0 && len != sizeof(reg_msg)) | |
2140 | return -EIO; | |
2141 | if (len == 0) | |
2142 | return -EPIPE; | |
2143 | if (len < 0) | |
2144 | return len; | |
2145 | ||
2146 | if (reg_msg.magic == LTTNG_UST_COMM_MAGIC) { | |
2147 | *byte_order = BYTE_ORDER == BIG_ENDIAN ? | |
2148 | BIG_ENDIAN : LITTLE_ENDIAN; | |
2149 | } else if (reg_msg.magic == bswap_32(LTTNG_UST_COMM_MAGIC)) { | |
2150 | *byte_order = BYTE_ORDER == BIG_ENDIAN ? | |
2151 | LITTLE_ENDIAN : BIG_ENDIAN; | |
2152 | } else { | |
2153 | return -LTTNG_UST_ERR_INVAL_MAGIC; | |
2154 | } | |
2155 | switch (reg_msg.socket_type) { | |
2156 | case 0: *type = USTCTL_SOCKET_CMD; | |
2157 | break; | |
2158 | case 1: *type = USTCTL_SOCKET_NOTIFY; | |
2159 | break; | |
2160 | default: | |
2161 | return -LTTNG_UST_ERR_INVAL_SOCKET_TYPE; | |
2162 | } | |
2163 | *major = reg_msg.major; | |
2164 | *minor = reg_msg.minor; | |
32ce8569 MD |
2165 | *bits_per_long = reg_msg.bits_per_long; |
2166 | *uint8_t_alignment = reg_msg.uint8_t_alignment; | |
2167 | *uint16_t_alignment = reg_msg.uint16_t_alignment; | |
2168 | *uint32_t_alignment = reg_msg.uint32_t_alignment; | |
2169 | *uint64_t_alignment = reg_msg.uint64_t_alignment; | |
2170 | *long_alignment = reg_msg.long_alignment; | |
2171 | memcpy(name, reg_msg.name, LTTNG_UST_ABI_PROCNAME_LEN); | |
6a359b8a MD |
2172 | if (reg_msg.major < LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE || |
2173 | reg_msg.major > LTTNG_UST_ABI_MAJOR_VERSION) { | |
32ce8569 MD |
2174 | return -LTTNG_UST_ERR_UNSUP_MAJOR; |
2175 | } | |
a834901f | 2176 | return get_cred(sock, ®_msg, pid, ppid, uid, gid); |
32ce8569 MD |
2177 | } |
2178 | ||
2179 | int ustctl_recv_notify(int sock, enum ustctl_notify_cmd *notify_cmd) | |
2180 | { | |
2181 | struct ustcomm_notify_hdr header; | |
2182 | ssize_t len; | |
2183 | ||
2184 | len = ustcomm_recv_unix_sock(sock, &header, sizeof(header)); | |
2185 | if (len > 0 && len != sizeof(header)) | |
2186 | return -EIO; | |
2187 | if (len == 0) | |
2188 | return -EPIPE; | |
2189 | if (len < 0) | |
2190 | return len; | |
2191 | switch (header.notify_cmd) { | |
2192 | case 0: | |
2193 | *notify_cmd = USTCTL_NOTIFY_CMD_EVENT; | |
2194 | break; | |
2195 | case 1: | |
2196 | *notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL; | |
2197 | break; | |
c785c634 MD |
2198 | case 2: |
2199 | *notify_cmd = USTCTL_NOTIFY_CMD_ENUM; | |
2200 | break; | |
32ce8569 MD |
2201 | default: |
2202 | return -EINVAL; | |
2203 | } | |
2204 | return 0; | |
2205 | } | |
2206 | ||
2207 | /* | |
2208 | * Returns 0 on success, negative error value on error. | |
2209 | */ | |
2210 | int ustctl_recv_register_event(int sock, | |
2211 | int *session_objd, | |
2212 | int *channel_objd, | |
2213 | char *event_name, | |
2214 | int *loglevel, | |
2215 | char **signature, | |
2216 | size_t *nr_fields, | |
2217 | struct ustctl_field **fields, | |
2218 | char **model_emf_uri) | |
2219 | { | |
2220 | ssize_t len; | |
2221 | struct ustcomm_notify_event_msg msg; | |
2222 | size_t signature_len, fields_len, model_emf_uri_len; | |
2223 | char *a_sign = NULL, *a_model_emf_uri = NULL; | |
2224 | struct ustctl_field *a_fields = NULL; | |
2225 | ||
2226 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2227 | if (len > 0 && len != sizeof(msg)) | |
2228 | return -EIO; | |
2229 | if (len == 0) | |
2230 | return -EPIPE; | |
2231 | if (len < 0) | |
2232 | return len; | |
2233 | ||
2234 | *session_objd = msg.session_objd; | |
2235 | *channel_objd = msg.channel_objd; | |
2236 | strncpy(event_name, msg.event_name, LTTNG_UST_SYM_NAME_LEN); | |
2237 | event_name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
2238 | *loglevel = msg.loglevel; | |
2239 | signature_len = msg.signature_len; | |
2240 | fields_len = msg.fields_len; | |
2241 | ||
2242 | if (fields_len % sizeof(*a_fields) != 0) { | |
2243 | return -EINVAL; | |
2244 | } | |
2245 | ||
2246 | model_emf_uri_len = msg.model_emf_uri_len; | |
2247 | ||
2248 | /* recv signature. contains at least \0. */ | |
2249 | a_sign = zmalloc(signature_len); | |
2250 | if (!a_sign) | |
2251 | return -ENOMEM; | |
2252 | len = ustcomm_recv_unix_sock(sock, a_sign, signature_len); | |
2253 | if (len > 0 && len != signature_len) { | |
2254 | len = -EIO; | |
2255 | goto signature_error; | |
2256 | } | |
2257 | if (len == 0) { | |
2258 | len = -EPIPE; | |
2259 | goto signature_error; | |
2260 | } | |
2261 | if (len < 0) { | |
2262 | goto signature_error; | |
2263 | } | |
2264 | /* Enforce end of string */ | |
111198c2 | 2265 | a_sign[signature_len - 1] = '\0'; |
32ce8569 MD |
2266 | |
2267 | /* recv fields */ | |
2268 | if (fields_len) { | |
2269 | a_fields = zmalloc(fields_len); | |
2270 | if (!a_fields) { | |
2271 | len = -ENOMEM; | |
2272 | goto signature_error; | |
2273 | } | |
2274 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2275 | if (len > 0 && len != fields_len) { | |
2276 | len = -EIO; | |
2277 | goto fields_error; | |
2278 | } | |
2279 | if (len == 0) { | |
2280 | len = -EPIPE; | |
2281 | goto fields_error; | |
2282 | } | |
2283 | if (len < 0) { | |
2284 | goto fields_error; | |
2285 | } | |
2286 | } | |
2287 | ||
2288 | if (model_emf_uri_len) { | |
2289 | /* recv model_emf_uri_len */ | |
2290 | a_model_emf_uri = zmalloc(model_emf_uri_len); | |
2291 | if (!a_model_emf_uri) { | |
2292 | len = -ENOMEM; | |
2293 | goto fields_error; | |
2294 | } | |
2295 | len = ustcomm_recv_unix_sock(sock, a_model_emf_uri, | |
2296 | model_emf_uri_len); | |
2297 | if (len > 0 && len != model_emf_uri_len) { | |
2298 | len = -EIO; | |
2299 | goto model_error; | |
2300 | } | |
2301 | if (len == 0) { | |
2302 | len = -EPIPE; | |
2303 | goto model_error; | |
2304 | } | |
2305 | if (len < 0) { | |
2306 | goto model_error; | |
2307 | } | |
2308 | /* Enforce end of string */ | |
2309 | a_model_emf_uri[model_emf_uri_len - 1] = '\0'; | |
2310 | } | |
2311 | ||
2312 | *signature = a_sign; | |
2313 | *nr_fields = fields_len / sizeof(*a_fields); | |
2314 | *fields = a_fields; | |
2315 | *model_emf_uri = a_model_emf_uri; | |
2316 | ||
2317 | return 0; | |
2318 | ||
2319 | model_error: | |
2320 | free(a_model_emf_uri); | |
2321 | fields_error: | |
2322 | free(a_fields); | |
2323 | signature_error: | |
2324 | free(a_sign); | |
2325 | return len; | |
2326 | } | |
2327 | ||
2328 | /* | |
2329 | * Returns 0 on success, negative error value on error. | |
2330 | */ | |
2331 | int ustctl_reply_register_event(int sock, | |
2332 | uint32_t id, | |
2333 | int ret_code) | |
2334 | { | |
2335 | ssize_t len; | |
2336 | struct { | |
2337 | struct ustcomm_notify_hdr header; | |
2338 | struct ustcomm_notify_event_reply r; | |
2339 | } reply; | |
2340 | ||
2341 | memset(&reply, 0, sizeof(reply)); | |
2342 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_EVENT; | |
2343 | reply.r.ret_code = ret_code; | |
2344 | reply.r.event_id = id; | |
2345 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2346 | if (len > 0 && len != sizeof(reply)) | |
2347 | return -EIO; | |
2348 | if (len < 0) | |
2349 | return len; | |
2350 | return 0; | |
2351 | } | |
2352 | ||
c785c634 MD |
2353 | /* |
2354 | * Returns 0 on success, negative UST or system error value on error. | |
2355 | */ | |
2356 | int ustctl_recv_register_enum(int sock, | |
2357 | int *session_objd, | |
2358 | char *enum_name, | |
2359 | struct ustctl_enum_entry **entries, | |
2360 | size_t *nr_entries) | |
2361 | { | |
2362 | ssize_t len; | |
2363 | struct ustcomm_notify_enum_msg msg; | |
2364 | size_t entries_len; | |
2365 | struct ustctl_enum_entry *a_entries = NULL; | |
2366 | ||
2367 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2368 | if (len > 0 && len != sizeof(msg)) | |
2369 | return -EIO; | |
2370 | if (len == 0) | |
2371 | return -EPIPE; | |
2372 | if (len < 0) | |
2373 | return len; | |
2374 | ||
2375 | *session_objd = msg.session_objd; | |
2376 | strncpy(enum_name, msg.enum_name, LTTNG_UST_SYM_NAME_LEN); | |
2377 | enum_name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
2378 | entries_len = msg.entries_len; | |
2379 | ||
2380 | if (entries_len % sizeof(*a_entries) != 0) { | |
2381 | return -EINVAL; | |
2382 | } | |
2383 | ||
2384 | /* recv entries */ | |
2385 | if (entries_len) { | |
2386 | a_entries = zmalloc(entries_len); | |
2387 | if (!a_entries) | |
2388 | return -ENOMEM; | |
2389 | len = ustcomm_recv_unix_sock(sock, a_entries, entries_len); | |
2390 | if (len > 0 && len != entries_len) { | |
2391 | len = -EIO; | |
2392 | goto entries_error; | |
2393 | } | |
2394 | if (len == 0) { | |
2395 | len = -EPIPE; | |
2396 | goto entries_error; | |
2397 | } | |
2398 | if (len < 0) { | |
2399 | goto entries_error; | |
2400 | } | |
2401 | } | |
2402 | *nr_entries = entries_len / sizeof(*a_entries); | |
2403 | *entries = a_entries; | |
2404 | ||
2405 | return 0; | |
2406 | ||
2407 | entries_error: | |
2408 | free(a_entries); | |
2409 | return len; | |
2410 | } | |
2411 | ||
2412 | /* | |
2413 | * Returns 0 on success, negative error value on error. | |
2414 | */ | |
2415 | int ustctl_reply_register_enum(int sock, | |
2416 | uint64_t id, | |
2417 | int ret_code) | |
2418 | { | |
2419 | ssize_t len; | |
2420 | struct { | |
2421 | struct ustcomm_notify_hdr header; | |
2422 | struct ustcomm_notify_enum_reply r; | |
2423 | } reply; | |
2424 | ||
2425 | memset(&reply, 0, sizeof(reply)); | |
2426 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_ENUM; | |
2427 | reply.r.ret_code = ret_code; | |
2428 | reply.r.enum_id = id; | |
2429 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2430 | if (len > 0 && len != sizeof(reply)) | |
2431 | return -EIO; | |
2432 | if (len < 0) | |
2433 | return len; | |
2434 | return 0; | |
2435 | } | |
2436 | ||
32ce8569 MD |
2437 | /* |
2438 | * Returns 0 on success, negative UST or system error value on error. | |
2439 | */ | |
2440 | int ustctl_recv_register_channel(int sock, | |
2441 | int *session_objd, /* session descriptor (output) */ | |
2442 | int *channel_objd, /* channel descriptor (output) */ | |
2443 | size_t *nr_fields, | |
2444 | struct ustctl_field **fields) | |
2445 | { | |
2446 | ssize_t len; | |
2447 | struct ustcomm_notify_channel_msg msg; | |
2448 | size_t fields_len; | |
2449 | struct ustctl_field *a_fields; | |
2450 | ||
2451 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2452 | if (len > 0 && len != sizeof(msg)) | |
2453 | return -EIO; | |
2454 | if (len == 0) | |
2455 | return -EPIPE; | |
2456 | if (len < 0) | |
2457 | return len; | |
2458 | ||
2459 | *session_objd = msg.session_objd; | |
2460 | *channel_objd = msg.channel_objd; | |
2461 | fields_len = msg.ctx_fields_len; | |
2462 | ||
2463 | if (fields_len % sizeof(*a_fields) != 0) { | |
2464 | return -EINVAL; | |
2465 | } | |
2466 | ||
2467 | /* recv fields */ | |
2468 | if (fields_len) { | |
2469 | a_fields = zmalloc(fields_len); | |
2470 | if (!a_fields) { | |
2471 | len = -ENOMEM; | |
2472 | goto alloc_error; | |
2473 | } | |
2474 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2475 | if (len > 0 && len != fields_len) { | |
2476 | len = -EIO; | |
2477 | goto fields_error; | |
2478 | } | |
2479 | if (len == 0) { | |
2480 | len = -EPIPE; | |
2481 | goto fields_error; | |
2482 | } | |
2483 | if (len < 0) { | |
2484 | goto fields_error; | |
2485 | } | |
2486 | *fields = a_fields; | |
2487 | } else { | |
2488 | *fields = NULL; | |
2489 | } | |
2490 | *nr_fields = fields_len / sizeof(*a_fields); | |
2491 | return 0; | |
2492 | ||
2493 | fields_error: | |
2494 | free(a_fields); | |
2495 | alloc_error: | |
2496 | return len; | |
2497 | } | |
2498 | ||
2499 | /* | |
2500 | * Returns 0 on success, negative error value on error. | |
2501 | */ | |
2502 | int ustctl_reply_register_channel(int sock, | |
2503 | uint32_t chan_id, | |
2504 | enum ustctl_channel_header header_type, | |
2505 | int ret_code) | |
2506 | { | |
2507 | ssize_t len; | |
2508 | struct { | |
2509 | struct ustcomm_notify_hdr header; | |
2510 | struct ustcomm_notify_channel_reply r; | |
2511 | } reply; | |
2512 | ||
2513 | memset(&reply, 0, sizeof(reply)); | |
2514 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL; | |
2515 | reply.r.ret_code = ret_code; | |
2516 | reply.r.chan_id = chan_id; | |
2517 | switch (header_type) { | |
2518 | case USTCTL_CHANNEL_HEADER_COMPACT: | |
2519 | reply.r.header_type = 1; | |
2520 | break; | |
2521 | case USTCTL_CHANNEL_HEADER_LARGE: | |
2522 | reply.r.header_type = 2; | |
2523 | break; | |
2524 | default: | |
2525 | reply.r.header_type = 0; | |
2526 | break; | |
2527 | } | |
2528 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2529 | if (len > 0 && len != sizeof(reply)) | |
2530 | return -EIO; | |
2531 | if (len < 0) | |
2532 | return len; | |
2533 | return 0; | |
2534 | } | |
2535 | ||
f53329f3 JD |
2536 | /* Regenerate the statedump. */ |
2537 | int ustctl_regenerate_statedump(int sock, int handle) | |
2538 | { | |
2539 | struct ustcomm_ust_msg lum; | |
2540 | struct ustcomm_ust_reply lur; | |
2541 | int ret; | |
2542 | ||
2543 | memset(&lum, 0, sizeof(lum)); | |
2544 | lum.handle = handle; | |
2545 | lum.cmd = LTTNG_UST_SESSION_STATEDUMP; | |
2546 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); | |
2547 | if (ret) | |
2548 | return ret; | |
2549 | DBG("Regenerated statedump for handle %u", handle); | |
2550 | return 0; | |
2551 | } | |
2552 | ||
ebabbf58 MD |
2553 | /* counter operations */ |
2554 | ||
2555 | int ustctl_get_nr_cpu_per_counter(void) | |
2556 | { | |
2557 | return lttng_counter_num_possible_cpus(); | |
2558 | } | |
2559 | ||
2560 | struct ustctl_daemon_counter * | |
2561 | ustctl_create_counter(size_t nr_dimensions, | |
2562 | const struct ustctl_counter_dimension *dimensions, | |
2563 | int64_t global_sum_step, | |
2564 | int global_counter_fd, | |
2565 | int nr_counter_cpu_fds, | |
2566 | const int *counter_cpu_fds, | |
2567 | enum ustctl_counter_bitness bitness, | |
2568 | enum ustctl_counter_arithmetic arithmetic, | |
2569 | uint32_t alloc_flags) | |
2570 | { | |
2571 | const char *transport_name; | |
2572 | struct ustctl_daemon_counter *counter; | |
2573 | struct lttng_counter_transport *transport; | |
2574 | struct lttng_counter_dimension ust_dim[LTTNG_COUNTER_DIMENSION_MAX]; | |
2575 | size_t i; | |
2576 | ||
2577 | if (nr_dimensions > LTTNG_COUNTER_DIMENSION_MAX) | |
2578 | return NULL; | |
2579 | /* Currently, only per-cpu allocation is supported. */ | |
2580 | switch (alloc_flags) { | |
2581 | case USTCTL_COUNTER_ALLOC_PER_CPU: | |
2582 | break; | |
2583 | ||
2584 | case USTCTL_COUNTER_ALLOC_PER_CPU | USTCTL_COUNTER_ALLOC_GLOBAL: | |
2585 | case USTCTL_COUNTER_ALLOC_GLOBAL: | |
2586 | default: | |
2587 | return NULL; | |
2588 | } | |
2589 | switch (bitness) { | |
2590 | case USTCTL_COUNTER_BITNESS_32: | |
2591 | switch (arithmetic) { | |
2592 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2593 | transport_name = "counter-per-cpu-32-modular"; | |
2594 | break; | |
2595 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2596 | transport_name = "counter-per-cpu-32-saturation"; | |
2597 | break; | |
2598 | default: | |
2599 | return NULL; | |
2600 | } | |
2601 | break; | |
2602 | case USTCTL_COUNTER_BITNESS_64: | |
2603 | switch (arithmetic) { | |
2604 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2605 | transport_name = "counter-per-cpu-64-modular"; | |
2606 | break; | |
2607 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2608 | transport_name = "counter-per-cpu-64-saturation"; | |
2609 | break; | |
2610 | default: | |
2611 | return NULL; | |
2612 | } | |
2613 | break; | |
2614 | default: | |
2615 | return NULL; | |
2616 | } | |
2617 | ||
2618 | transport = lttng_counter_transport_find(transport_name); | |
2619 | if (!transport) { | |
2620 | DBG("LTTng transport %s not found\n", | |
2621 | transport_name); | |
2622 | return NULL; | |
2623 | } | |
2624 | ||
2625 | counter = zmalloc(sizeof(*counter)); | |
2626 | if (!counter) | |
2627 | return NULL; | |
2628 | counter->attr = zmalloc(sizeof(*counter->attr)); | |
2629 | if (!counter->attr) | |
2630 | goto free_counter; | |
2631 | counter->attr->bitness = bitness; | |
2632 | counter->attr->arithmetic = arithmetic; | |
2633 | counter->attr->nr_dimensions = nr_dimensions; | |
2634 | counter->attr->global_sum_step = global_sum_step; | |
2635 | for (i = 0; i < nr_dimensions; i++) | |
2636 | counter->attr->dimensions[i] = dimensions[i]; | |
2637 | ||
2638 | for (i = 0; i < nr_dimensions; i++) { | |
2639 | ust_dim[i].size = dimensions[i].size; | |
2640 | ust_dim[i].underflow_index = dimensions[i].underflow_index; | |
2641 | ust_dim[i].overflow_index = dimensions[i].overflow_index; | |
2642 | ust_dim[i].has_underflow = dimensions[i].has_underflow; | |
2643 | ust_dim[i].has_overflow = dimensions[i].has_overflow; | |
2644 | } | |
2645 | counter->counter = transport->ops.counter_create(nr_dimensions, | |
2646 | ust_dim, global_sum_step, global_counter_fd, | |
2647 | nr_counter_cpu_fds, counter_cpu_fds, true); | |
2648 | if (!counter->counter) | |
2649 | goto free_attr; | |
2650 | counter->ops = &transport->ops; | |
2651 | return counter; | |
2652 | ||
2653 | free_attr: | |
2654 | free(counter->attr); | |
2655 | free_counter: | |
2656 | free(counter); | |
2657 | return NULL; | |
2658 | } | |
2659 | ||
2660 | int ustctl_create_counter_data(struct ustctl_daemon_counter *counter, | |
2661 | struct lttng_ust_object_data **_counter_data) | |
2662 | { | |
2663 | struct lttng_ust_object_data *counter_data; | |
dca92811 | 2664 | struct lttng_ust_counter_conf counter_conf = {0}; |
ebabbf58 MD |
2665 | size_t i; |
2666 | int ret; | |
2667 | ||
2668 | switch (counter->attr->arithmetic) { | |
2669 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2670 | counter_conf.arithmetic = LTTNG_UST_COUNTER_ARITHMETIC_MODULAR; | |
2671 | break; | |
2672 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2673 | counter_conf.arithmetic = LTTNG_UST_COUNTER_ARITHMETIC_SATURATION; | |
2674 | break; | |
2675 | default: | |
2676 | return -EINVAL; | |
2677 | } | |
2678 | switch (counter->attr->bitness) { | |
2679 | case USTCTL_COUNTER_BITNESS_32: | |
38980ed1 | 2680 | counter_conf.bitness = LTTNG_UST_COUNTER_BITNESS_32; |
ebabbf58 MD |
2681 | break; |
2682 | case USTCTL_COUNTER_BITNESS_64: | |
38980ed1 | 2683 | counter_conf.bitness = LTTNG_UST_COUNTER_BITNESS_64; |
ebabbf58 MD |
2684 | break; |
2685 | default: | |
2686 | return -EINVAL; | |
2687 | } | |
2688 | counter_conf.number_dimensions = counter->attr->nr_dimensions; | |
2689 | counter_conf.global_sum_step = counter->attr->global_sum_step; | |
2690 | for (i = 0; i < counter->attr->nr_dimensions; i++) { | |
2691 | counter_conf.dimensions[i].size = counter->attr->dimensions[i].size; | |
2692 | counter_conf.dimensions[i].underflow_index = counter->attr->dimensions[i].underflow_index; | |
2693 | counter_conf.dimensions[i].overflow_index = counter->attr->dimensions[i].overflow_index; | |
2694 | counter_conf.dimensions[i].has_underflow = counter->attr->dimensions[i].has_underflow; | |
2695 | counter_conf.dimensions[i].has_overflow = counter->attr->dimensions[i].has_overflow; | |
2696 | } | |
2697 | ||
2698 | counter_data = zmalloc(sizeof(*counter_data)); | |
2699 | if (!counter_data) { | |
2700 | ret = -ENOMEM; | |
2701 | goto error_alloc; | |
2702 | } | |
2703 | counter_data->type = LTTNG_UST_OBJECT_TYPE_COUNTER; | |
2704 | counter_data->handle = -1; | |
2705 | ||
2706 | counter_data->size = sizeof(counter_conf); | |
2707 | counter_data->u.counter.data = zmalloc(sizeof(counter_conf)); | |
2708 | if (!counter_data->u.counter.data) { | |
2709 | ret = -ENOMEM; | |
2710 | goto error_alloc_data; | |
2711 | } | |
2712 | ||
2713 | memcpy(counter_data->u.counter.data, &counter_conf, sizeof(counter_conf)); | |
2714 | *_counter_data = counter_data; | |
2715 | ||
2716 | return 0; | |
2717 | ||
2718 | error_alloc_data: | |
2719 | free(counter_data); | |
2720 | error_alloc: | |
2721 | return ret; | |
2722 | } | |
2723 | ||
2724 | int ustctl_create_counter_global_data(struct ustctl_daemon_counter *counter, | |
2725 | struct lttng_ust_object_data **_counter_global_data) | |
2726 | { | |
2727 | struct lttng_ust_object_data *counter_global_data; | |
2728 | int ret, fd; | |
2729 | size_t len; | |
2730 | ||
2731 | if (lttng_counter_get_global_shm(counter->counter, &fd, &len)) | |
2732 | return -EINVAL; | |
2733 | counter_global_data = zmalloc(sizeof(*counter_global_data)); | |
2734 | if (!counter_global_data) { | |
2735 | ret = -ENOMEM; | |
2736 | goto error_alloc; | |
2737 | } | |
2738 | counter_global_data->type = LTTNG_UST_OBJECT_TYPE_COUNTER_GLOBAL; | |
2739 | counter_global_data->handle = -1; | |
2740 | counter_global_data->size = len; | |
2741 | counter_global_data->u.counter_global.shm_fd = fd; | |
2742 | *_counter_global_data = counter_global_data; | |
2743 | return 0; | |
2744 | ||
2745 | error_alloc: | |
2746 | return ret; | |
2747 | } | |
2748 | ||
2749 | int ustctl_create_counter_cpu_data(struct ustctl_daemon_counter *counter, int cpu, | |
2750 | struct lttng_ust_object_data **_counter_cpu_data) | |
2751 | { | |
2752 | struct lttng_ust_object_data *counter_cpu_data; | |
2753 | int ret, fd; | |
2754 | size_t len; | |
2755 | ||
2756 | if (lttng_counter_get_cpu_shm(counter->counter, cpu, &fd, &len)) | |
2757 | return -EINVAL; | |
2758 | counter_cpu_data = zmalloc(sizeof(*counter_cpu_data)); | |
2759 | if (!counter_cpu_data) { | |
2760 | ret = -ENOMEM; | |
2761 | goto error_alloc; | |
2762 | } | |
2763 | counter_cpu_data->type = LTTNG_UST_OBJECT_TYPE_COUNTER_CPU; | |
2764 | counter_cpu_data->handle = -1; | |
2765 | counter_cpu_data->size = len; | |
2766 | counter_cpu_data->u.counter_cpu.shm_fd = fd; | |
2767 | counter_cpu_data->u.counter_cpu.cpu_nr = cpu; | |
2768 | *_counter_cpu_data = counter_cpu_data; | |
2769 | return 0; | |
2770 | ||
2771 | error_alloc: | |
2772 | return ret; | |
2773 | } | |
2774 | ||
2775 | void ustctl_destroy_counter(struct ustctl_daemon_counter *counter) | |
2776 | { | |
2777 | counter->ops->counter_destroy(counter->counter); | |
2778 | free(counter->attr); | |
2779 | free(counter); | |
2780 | } | |
2781 | ||
2782 | int ustctl_send_counter_data_to_ust(int sock, int parent_handle, | |
2783 | struct lttng_ust_object_data *counter_data) | |
2784 | { | |
2785 | struct ustcomm_ust_msg lum; | |
2786 | struct ustcomm_ust_reply lur; | |
2787 | int ret; | |
2788 | size_t size; | |
2789 | ssize_t len; | |
2790 | ||
2791 | if (!counter_data) | |
2792 | return -EINVAL; | |
2793 | ||
2794 | size = counter_data->size; | |
2795 | memset(&lum, 0, sizeof(lum)); | |
2796 | lum.handle = parent_handle; | |
2797 | lum.cmd = LTTNG_UST_COUNTER; | |
2798 | lum.u.counter.len = size; | |
2799 | ret = ustcomm_send_app_msg(sock, &lum); | |
2800 | if (ret) | |
2801 | return ret; | |
2802 | ||
2803 | /* Send counter data */ | |
2804 | len = ustcomm_send_unix_sock(sock, counter_data->u.counter.data, size); | |
2805 | if (len != size) { | |
2806 | if (len < 0) | |
2807 | return len; | |
2808 | else | |
2809 | return -EIO; | |
2810 | } | |
2811 | ||
2812 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2813 | if (!ret) { | |
2814 | counter_data->handle = lur.ret_val; | |
2815 | } | |
2816 | return ret; | |
2817 | } | |
2818 | ||
2819 | int ustctl_send_counter_global_data_to_ust(int sock, | |
2820 | struct lttng_ust_object_data *counter_data, | |
2821 | struct lttng_ust_object_data *counter_global_data) | |
2822 | { | |
2823 | struct ustcomm_ust_msg lum; | |
2824 | struct ustcomm_ust_reply lur; | |
2825 | int ret, shm_fd[1]; | |
2826 | size_t size; | |
2827 | ssize_t len; | |
2828 | ||
2829 | if (!counter_data || !counter_global_data) | |
2830 | return -EINVAL; | |
2831 | ||
2832 | size = counter_global_data->size; | |
2833 | memset(&lum, 0, sizeof(lum)); | |
2834 | lum.handle = counter_data->handle; /* parent handle */ | |
2835 | lum.cmd = LTTNG_UST_COUNTER_GLOBAL; | |
2836 | lum.u.counter_global.len = size; | |
2837 | ret = ustcomm_send_app_msg(sock, &lum); | |
2838 | if (ret) | |
2839 | return ret; | |
2840 | ||
2841 | shm_fd[0] = counter_global_data->u.counter_global.shm_fd; | |
2842 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
2843 | if (len <= 0) { | |
2844 | if (len < 0) | |
2845 | return len; | |
2846 | else | |
2847 | return -EIO; | |
2848 | } | |
2849 | ||
2850 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2851 | if (!ret) { | |
2852 | counter_global_data->handle = lur.ret_val; | |
2853 | } | |
2854 | return ret; | |
2855 | } | |
2856 | ||
2857 | int ustctl_send_counter_cpu_data_to_ust(int sock, | |
2858 | struct lttng_ust_object_data *counter_data, | |
2859 | struct lttng_ust_object_data *counter_cpu_data) | |
2860 | { | |
2861 | struct ustcomm_ust_msg lum; | |
2862 | struct ustcomm_ust_reply lur; | |
2863 | int ret, shm_fd[1]; | |
2864 | size_t size; | |
2865 | ssize_t len; | |
2866 | ||
2867 | if (!counter_data || !counter_cpu_data) | |
2868 | return -EINVAL; | |
2869 | ||
2870 | size = counter_cpu_data->size; | |
2871 | memset(&lum, 0, sizeof(lum)); | |
2872 | lum.handle = counter_data->handle; /* parent handle */ | |
2873 | lum.cmd = LTTNG_UST_COUNTER_CPU; | |
2874 | lum.u.counter_cpu.len = size; | |
2875 | lum.u.counter_cpu.cpu_nr = counter_cpu_data->u.counter_cpu.cpu_nr; | |
2876 | ret = ustcomm_send_app_msg(sock, &lum); | |
2877 | if (ret) | |
2878 | return ret; | |
2879 | ||
2880 | shm_fd[0] = counter_cpu_data->u.counter_global.shm_fd; | |
2881 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
2882 | if (len <= 0) { | |
2883 | if (len < 0) | |
2884 | return len; | |
2885 | else | |
2886 | return -EIO; | |
2887 | } | |
2888 | ||
2889 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2890 | if (!ret) { | |
2891 | counter_cpu_data->handle = lur.ret_val; | |
2892 | } | |
2893 | return ret; | |
2894 | } | |
2895 | ||
2896 | int ustctl_counter_read(struct ustctl_daemon_counter *counter, | |
2897 | const size_t *dimension_indexes, | |
2898 | int cpu, int64_t *value, | |
2899 | bool *overflow, bool *underflow) | |
2900 | { | |
2901 | return counter->ops->counter_read(counter->counter, dimension_indexes, cpu, | |
2902 | value, overflow, underflow); | |
2903 | } | |
2904 | ||
2905 | int ustctl_counter_aggregate(struct ustctl_daemon_counter *counter, | |
2906 | const size_t *dimension_indexes, | |
2907 | int64_t *value, | |
2908 | bool *overflow, bool *underflow) | |
2909 | { | |
2910 | return counter->ops->counter_aggregate(counter->counter, dimension_indexes, | |
2911 | value, overflow, underflow); | |
2912 | } | |
2913 | ||
2914 | int ustctl_counter_clear(struct ustctl_daemon_counter *counter, | |
2915 | const size_t *dimension_indexes) | |
2916 | { | |
2917 | return counter->ops->counter_clear(counter->counter, dimension_indexes); | |
2918 | } | |
2919 | ||
74d81a6c MD |
2920 | static __attribute__((constructor)) |
2921 | void ustctl_init(void) | |
2922 | { | |
2923 | init_usterr(); | |
6f626d28 | 2924 | lttng_ust_getenv_init(); /* Needs init_usterr() to be completed. */ |
f9364363 | 2925 | lttng_ust_clock_init(); |
74d81a6c MD |
2926 | lttng_ring_buffer_metadata_client_init(); |
2927 | lttng_ring_buffer_client_overwrite_init(); | |
34a91bdb | 2928 | lttng_ring_buffer_client_overwrite_rt_init(); |
74d81a6c | 2929 | lttng_ring_buffer_client_discard_init(); |
34a91bdb | 2930 | lttng_ring_buffer_client_discard_rt_init(); |
ebabbf58 MD |
2931 | lttng_counter_client_percpu_32_modular_init(); |
2932 | lttng_counter_client_percpu_64_modular_init(); | |
03d2d293 | 2933 | lib_ringbuffer_signal_init(); |
74d81a6c MD |
2934 | } |
2935 | ||
2936 | static __attribute__((destructor)) | |
2937 | void ustctl_exit(void) | |
2938 | { | |
34a91bdb | 2939 | lttng_ring_buffer_client_discard_rt_exit(); |
74d81a6c | 2940 | lttng_ring_buffer_client_discard_exit(); |
34a91bdb | 2941 | lttng_ring_buffer_client_overwrite_rt_exit(); |
74d81a6c MD |
2942 | lttng_ring_buffer_client_overwrite_exit(); |
2943 | lttng_ring_buffer_metadata_client_exit(); | |
ebabbf58 MD |
2944 | lttng_counter_client_percpu_32_modular_exit(); |
2945 | lttng_counter_client_percpu_64_modular_exit(); | |
57773204 | 2946 | } |