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