Commit | Line | Data |
---|---|---|
57773204 | 1 | /* |
c0c0989a | 2 | * SPDX-License-Identifier: GPL-2.0-only |
57773204 | 3 | * |
c0c0989a MJ |
4 | * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca> |
5 | * Copyright (C) 2011-2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
57773204 MD |
6 | */ |
7 | ||
fb31eb73 | 8 | #include <stdint.h> |
57773204 | 9 | #include <string.h> |
fb31eb73 | 10 | #include <sys/mman.h> |
4e79769f | 11 | #include <unistd.h> |
a834901f MD |
12 | #include <sys/types.h> |
13 | #include <sys/socket.h> | |
fb31eb73 | 14 | |
c62a3816 | 15 | #include <lttng/ust-config.h> |
4318ae1b MD |
16 | #include <lttng/ust-ctl.h> |
17 | #include <lttng/ust-abi.h> | |
3208818b | 18 | #include <lttng/ust-endian.h> |
bb7ad29d | 19 | |
44c72f10 | 20 | #include <usterr-signal-safe.h> |
b728d87e | 21 | #include <ust-comm.h> |
864a1eda | 22 | #include <ust-helper.h> |
cd61d9bf | 23 | #include "ust-compat.h" |
57773204 MD |
24 | |
25 | #include "../libringbuffer/backend.h" | |
26 | #include "../libringbuffer/frontend.h" | |
bb7ad29d | 27 | #include "../liblttng-ust/ust-events-internal.h" |
c9023c93 | 28 | #include "../liblttng-ust/wait.h" |
b2f3252a | 29 | #include "../liblttng-ust/lttng-rb-clients.h" |
f9364363 | 30 | #include "../liblttng-ust/clock.h" |
92ce256d | 31 | #include "../liblttng-ust/getenv.h" |
23d128de | 32 | #include "../liblttng-ust/lttng-tracer-core.h" |
c9023c93 | 33 | |
ebabbf58 MD |
34 | #include "../libcounter/shm.h" |
35 | #include "../libcounter/smp.h" | |
36 | #include "../libcounter/counter.h" | |
37 | ||
c9023c93 MD |
38 | /* |
39 | * Number of milliseconds to retry before failing metadata writes on | |
40 | * buffer full condition. (10 seconds) | |
41 | */ | |
42 | #define LTTNG_METADATA_TIMEOUT_MSEC 10000 | |
57773204 | 43 | |
74d81a6c MD |
44 | /* |
45 | * Channel representation within consumer. | |
46 | */ | |
47 | struct ustctl_consumer_channel { | |
48 | struct lttng_channel *chan; /* lttng channel buffers */ | |
6b120308 | 49 | |
74d81a6c MD |
50 | /* initial attributes */ |
51 | struct ustctl_consumer_channel_attr attr; | |
ff0f5728 MD |
52 | int wait_fd; /* monitor close() */ |
53 | int wakeup_fd; /* monitor close() */ | |
74d81a6c MD |
54 | }; |
55 | ||
56 | /* | |
57 | * Stream representation within consumer. | |
58 | */ | |
59 | struct ustctl_consumer_stream { | |
60 | struct lttng_ust_shm_handle *handle; /* shared-memory handle */ | |
61 | struct lttng_ust_lib_ring_buffer *buf; | |
62 | struct ustctl_consumer_channel *chan; | |
63 | int shm_fd, wait_fd, wakeup_fd; | |
64 | int cpu; | |
65 | uint64_t memory_map_size; | |
66 | }; | |
67 | ||
ebabbf58 MD |
68 | #define USTCTL_COUNTER_ATTR_DIMENSION_MAX 8 |
69 | struct ustctl_counter_attr { | |
70 | enum ustctl_counter_arithmetic arithmetic; | |
71 | enum ustctl_counter_bitness bitness; | |
72 | uint32_t nr_dimensions; | |
73 | int64_t global_sum_step; | |
74 | struct ustctl_counter_dimension dimensions[USTCTL_COUNTER_ATTR_DIMENSION_MAX]; | |
81bc4972 | 75 | bool coalesce_hits; |
ebabbf58 MD |
76 | }; |
77 | ||
78 | /* | |
79 | * Counter representation within daemon. | |
80 | */ | |
81 | struct ustctl_daemon_counter { | |
82 | struct lib_counter *counter; | |
83 | const struct lttng_counter_ops *ops; | |
84 | struct ustctl_counter_attr *attr; /* initial attributes */ | |
85 | }; | |
86 | ||
74d81a6c | 87 | extern void lttng_ring_buffer_client_overwrite_init(void); |
08a3170c | 88 | extern void lttng_ring_buffer_client_overwrite_rt_init(void); |
74d81a6c | 89 | extern void lttng_ring_buffer_client_discard_init(void); |
08a3170c | 90 | extern void lttng_ring_buffer_client_discard_rt_init(void); |
74d81a6c MD |
91 | extern void lttng_ring_buffer_metadata_client_init(void); |
92 | extern void lttng_ring_buffer_client_overwrite_exit(void); | |
08a3170c | 93 | extern void lttng_ring_buffer_client_overwrite_rt_exit(void); |
74d81a6c | 94 | extern void lttng_ring_buffer_client_discard_exit(void); |
08a3170c | 95 | extern void lttng_ring_buffer_client_discard_rt_exit(void); |
74d81a6c | 96 | extern void lttng_ring_buffer_metadata_client_exit(void); |
ddabe860 MJ |
97 | |
98 | __attribute__((visibility("hidden"))) | |
ebabbf58 | 99 | extern void lttng_counter_client_percpu_32_modular_init(void); |
ddabe860 MJ |
100 | |
101 | __attribute__((visibility("hidden"))) | |
ebabbf58 | 102 | extern void lttng_counter_client_percpu_32_modular_exit(void); |
ddabe860 MJ |
103 | |
104 | __attribute__((visibility("hidden"))) | |
ebabbf58 | 105 | extern void lttng_counter_client_percpu_64_modular_init(void); |
ddabe860 MJ |
106 | |
107 | __attribute__((visibility("hidden"))) | |
ebabbf58 | 108 | extern void lttng_counter_client_percpu_64_modular_exit(void); |
74d81a6c | 109 | |
2be0e72c MD |
110 | int ustctl_release_handle(int sock, int handle) |
111 | { | |
112 | struct ustcomm_ust_msg lum; | |
113 | struct ustcomm_ust_reply lur; | |
2be0e72c | 114 | |
74d81a6c MD |
115 | if (sock < 0 || handle < 0) |
116 | return 0; | |
117 | memset(&lum, 0, sizeof(lum)); | |
118 | lum.handle = handle; | |
fd17d7ce | 119 | lum.cmd = LTTNG_UST_ABI_RELEASE; |
74d81a6c | 120 | return ustcomm_send_app_cmd(sock, &lum, &lur); |
2be0e72c | 121 | } |
74d81a6c | 122 | |
12388166 MD |
123 | /* |
124 | * If sock is negative, it means we don't have to notify the other side | |
125 | * (e.g. application has already vanished). | |
126 | */ | |
fd17d7ce | 127 | int ustctl_release_object(int sock, struct lttng_ust_abi_object_data *data) |
57773204 | 128 | { |
57773204 MD |
129 | int ret; |
130 | ||
9bfc503d MD |
131 | if (!data) |
132 | return -EINVAL; | |
133 | ||
74d81a6c | 134 | switch (data->type) { |
fd17d7ce | 135 | case LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL: |
ff0f5728 MD |
136 | if (data->u.channel.wakeup_fd >= 0) { |
137 | ret = close(data->u.channel.wakeup_fd); | |
138 | if (ret < 0) { | |
139 | ret = -errno; | |
140 | return ret; | |
141 | } | |
dd6c697c | 142 | data->u.channel.wakeup_fd = -1; |
ff0f5728 | 143 | } |
74d81a6c | 144 | free(data->u.channel.data); |
dd6c697c | 145 | data->u.channel.data = NULL; |
74d81a6c | 146 | break; |
fd17d7ce | 147 | case LTTNG_UST_ABI_OBJECT_TYPE_STREAM: |
74d81a6c MD |
148 | if (data->u.stream.shm_fd >= 0) { |
149 | ret = close(data->u.stream.shm_fd); | |
150 | if (ret < 0) { | |
151 | ret = -errno; | |
152 | return ret; | |
153 | } | |
dd6c697c | 154 | data->u.stream.shm_fd = -1; |
d26228ae | 155 | } |
74d81a6c MD |
156 | if (data->u.stream.wakeup_fd >= 0) { |
157 | ret = close(data->u.stream.wakeup_fd); | |
158 | if (ret < 0) { | |
159 | ret = -errno; | |
160 | return ret; | |
161 | } | |
dd6c697c | 162 | data->u.stream.wakeup_fd = -1; |
d26228ae | 163 | } |
74d81a6c | 164 | break; |
fd17d7ce MD |
165 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT: |
166 | case LTTNG_UST_ABI_OBJECT_TYPE_CONTEXT: | |
167 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER_GROUP: | |
168 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER: | |
32ce8569 | 169 | break; |
fd17d7ce | 170 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER: |
ebabbf58 MD |
171 | free(data->u.counter.data); |
172 | data->u.counter.data = NULL; | |
173 | break; | |
fd17d7ce | 174 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL: |
ebabbf58 MD |
175 | if (data->u.counter_global.shm_fd >= 0) { |
176 | ret = close(data->u.counter_global.shm_fd); | |
177 | if (ret < 0) { | |
178 | ret = -errno; | |
179 | return ret; | |
180 | } | |
181 | data->u.counter_global.shm_fd = -1; | |
182 | } | |
183 | break; | |
fd17d7ce | 184 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU: |
ebabbf58 MD |
185 | if (data->u.counter_cpu.shm_fd >= 0) { |
186 | ret = close(data->u.counter_cpu.shm_fd); | |
187 | if (ret < 0) { | |
188 | ret = -errno; | |
189 | return ret; | |
190 | } | |
191 | data->u.counter_cpu.shm_fd = -1; | |
192 | } | |
193 | break; | |
74d81a6c MD |
194 | default: |
195 | assert(0); | |
d26228ae | 196 | } |
2be0e72c | 197 | return ustctl_release_handle(sock, data->handle); |
57773204 MD |
198 | } |
199 | ||
1c5e467e MD |
200 | /* |
201 | * Send registration done packet to the application. | |
202 | */ | |
203 | int ustctl_register_done(int sock) | |
204 | { | |
205 | struct ustcomm_ust_msg lum; | |
206 | struct ustcomm_ust_reply lur; | |
207 | int ret; | |
208 | ||
209 | DBG("Sending register done command to %d", sock); | |
210 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
211 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
212 | lum.cmd = LTTNG_UST_ABI_REGISTER_DONE; | |
1c5e467e MD |
213 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
214 | if (ret) | |
215 | return ret; | |
1c5e467e | 216 | return 0; |
1c5e467e MD |
217 | } |
218 | ||
57773204 MD |
219 | /* |
220 | * returns session handle. | |
221 | */ | |
222 | int ustctl_create_session(int sock) | |
223 | { | |
224 | struct ustcomm_ust_msg lum; | |
225 | struct ustcomm_ust_reply lur; | |
226 | int ret, session_handle; | |
227 | ||
228 | /* Create session */ | |
229 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
230 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
231 | lum.cmd = LTTNG_UST_ABI_SESSION; | |
57773204 MD |
232 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
233 | if (ret) | |
234 | return ret; | |
235 | session_handle = lur.ret_val; | |
236 | DBG("received session handle %u", session_handle); | |
237 | return session_handle; | |
238 | } | |
239 | ||
fd17d7ce MD |
240 | int ustctl_create_event(int sock, struct lttng_ust_abi_event *ev, |
241 | struct lttng_ust_abi_object_data *channel_data, | |
242 | struct lttng_ust_abi_object_data **_event_data) | |
57773204 MD |
243 | { |
244 | struct ustcomm_ust_msg lum; | |
245 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 246 | struct lttng_ust_abi_object_data *event_data; |
57773204 MD |
247 | int ret; |
248 | ||
9bfc503d MD |
249 | if (!channel_data || !_event_data) |
250 | return -EINVAL; | |
251 | ||
74d81a6c | 252 | event_data = zmalloc(sizeof(*event_data)); |
57773204 MD |
253 | if (!event_data) |
254 | return -ENOMEM; | |
fd17d7ce | 255 | event_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT; |
57773204 MD |
256 | memset(&lum, 0, sizeof(lum)); |
257 | lum.handle = channel_data->handle; | |
fd17d7ce | 258 | lum.cmd = LTTNG_UST_ABI_EVENT; |
57773204 | 259 | strncpy(lum.u.event.name, ev->name, |
fd17d7ce | 260 | LTTNG_UST_ABI_SYM_NAME_LEN); |
57773204 | 261 | lum.u.event.instrumentation = ev->instrumentation; |
457a6b58 MD |
262 | lum.u.event.loglevel_type = ev->loglevel_type; |
263 | lum.u.event.loglevel = ev->loglevel; | |
57773204 MD |
264 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
265 | if (ret) { | |
266 | free(event_data); | |
267 | return ret; | |
268 | } | |
269 | event_data->handle = lur.ret_val; | |
270 | DBG("received event handle %u", event_data->handle); | |
271 | *_event_data = event_data; | |
272 | return 0; | |
273 | } | |
274 | ||
53f0df51 | 275 | int ustctl_add_context(int sock, struct lttng_ust_context_attr *ctx, |
fd17d7ce MD |
276 | struct lttng_ust_abi_object_data *obj_data, |
277 | struct lttng_ust_abi_object_data **_context_data) | |
57773204 MD |
278 | { |
279 | struct ustcomm_ust_msg lum; | |
280 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 281 | struct lttng_ust_abi_object_data *context_data = NULL; |
53f0df51 JG |
282 | char *buf = NULL; |
283 | size_t len; | |
57773204 MD |
284 | int ret; |
285 | ||
53f0df51 JG |
286 | if (!obj_data || !_context_data) { |
287 | ret = -EINVAL; | |
288 | goto end; | |
289 | } | |
9bfc503d | 290 | |
74d81a6c | 291 | context_data = zmalloc(sizeof(*context_data)); |
53f0df51 JG |
292 | if (!context_data) { |
293 | ret = -ENOMEM; | |
294 | goto end; | |
295 | } | |
fd17d7ce | 296 | context_data->type = LTTNG_UST_ABI_OBJECT_TYPE_CONTEXT; |
57773204 | 297 | memset(&lum, 0, sizeof(lum)); |
3039d8ed | 298 | lum.handle = obj_data->handle; |
fd17d7ce | 299 | lum.cmd = LTTNG_UST_ABI_CONTEXT; |
53f0df51 JG |
300 | |
301 | lum.u.context.ctx = ctx->ctx; | |
302 | switch (ctx->ctx) { | |
fd17d7ce | 303 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
53f0df51 JG |
304 | lum.u.context.u.perf_counter = ctx->u.perf_counter; |
305 | break; | |
fd17d7ce | 306 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
53f0df51 JG |
307 | { |
308 | size_t provider_name_len = strlen( | |
309 | ctx->u.app_ctx.provider_name) + 1; | |
310 | size_t ctx_name_len = strlen(ctx->u.app_ctx.ctx_name) + 1; | |
311 | ||
312 | lum.u.context.u.app_ctx.provider_name_len = provider_name_len; | |
313 | lum.u.context.u.app_ctx.ctx_name_len = ctx_name_len; | |
314 | ||
315 | len = provider_name_len + ctx_name_len; | |
316 | buf = zmalloc(len); | |
317 | if (!buf) { | |
318 | ret = -ENOMEM; | |
319 | goto end; | |
320 | } | |
321 | memcpy(buf, ctx->u.app_ctx.provider_name, | |
322 | provider_name_len); | |
323 | memcpy(buf + provider_name_len, ctx->u.app_ctx.ctx_name, | |
324 | ctx_name_len); | |
325 | break; | |
326 | } | |
327 | default: | |
328 | break; | |
329 | } | |
330 | ret = ustcomm_send_app_msg(sock, &lum); | |
331 | if (ret) | |
332 | goto end; | |
333 | if (buf) { | |
334 | /* send var len ctx_name */ | |
335 | ret = ustcomm_send_unix_sock(sock, buf, len); | |
336 | if (ret < 0) { | |
337 | goto end; | |
338 | } | |
339 | if (ret != len) { | |
340 | ret = -EINVAL; | |
341 | goto end; | |
342 | } | |
343 | } | |
344 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
345 | if (ret < 0) { | |
346 | goto end; | |
57773204 | 347 | } |
32ce8569 MD |
348 | context_data->handle = -1; |
349 | DBG("Context created successfully"); | |
57773204 | 350 | *_context_data = context_data; |
53f0df51 JG |
351 | context_data = NULL; |
352 | end: | |
353 | free(context_data); | |
354 | free(buf); | |
57773204 MD |
355 | return ret; |
356 | } | |
357 | ||
fd17d7ce MD |
358 | int ustctl_set_filter(int sock, struct lttng_ust_abi_filter_bytecode *bytecode, |
359 | struct lttng_ust_abi_object_data *obj_data) | |
cd54f6d9 MD |
360 | { |
361 | struct ustcomm_ust_msg lum; | |
362 | struct ustcomm_ust_reply lur; | |
363 | int ret; | |
364 | ||
365 | if (!obj_data) | |
366 | return -EINVAL; | |
367 | ||
368 | memset(&lum, 0, sizeof(lum)); | |
369 | lum.handle = obj_data->handle; | |
fd17d7ce | 370 | lum.cmd = LTTNG_UST_ABI_FILTER; |
cd54f6d9 MD |
371 | lum.u.filter.data_size = bytecode->len; |
372 | lum.u.filter.reloc_offset = bytecode->reloc_offset; | |
e695af51 | 373 | lum.u.filter.seqnum = bytecode->seqnum; |
cd54f6d9 MD |
374 | |
375 | ret = ustcomm_send_app_msg(sock, &lum); | |
d37ecb3f FD |
376 | if (ret) |
377 | return ret; | |
378 | /* send var len bytecode */ | |
379 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
380 | bytecode->len); | |
381 | if (ret < 0) { | |
382 | return ret; | |
383 | } | |
384 | if (ret != bytecode->len) | |
385 | return -EINVAL; | |
386 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
387 | } | |
388 | ||
fd17d7ce MD |
389 | int ustctl_set_capture(int sock, struct lttng_ust_abi_capture_bytecode *bytecode, |
390 | struct lttng_ust_abi_object_data *obj_data) | |
d37ecb3f FD |
391 | { |
392 | struct ustcomm_ust_msg lum; | |
393 | struct ustcomm_ust_reply lur; | |
394 | int ret; | |
395 | ||
396 | if (!obj_data) | |
397 | return -EINVAL; | |
398 | ||
399 | memset(&lum, 0, sizeof(lum)); | |
400 | lum.handle = obj_data->handle; | |
fd17d7ce | 401 | lum.cmd = LTTNG_UST_ABI_CAPTURE; |
d37ecb3f FD |
402 | lum.u.capture.data_size = bytecode->len; |
403 | lum.u.capture.reloc_offset = bytecode->reloc_offset; | |
404 | lum.u.capture.seqnum = bytecode->seqnum; | |
405 | ||
406 | ret = ustcomm_send_app_msg(sock, &lum); | |
cd54f6d9 MD |
407 | if (ret) |
408 | return ret; | |
cd54f6d9 MD |
409 | /* send var len bytecode */ |
410 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
411 | bytecode->len); | |
412 | if (ret < 0) { | |
413 | return ret; | |
414 | } | |
7bc53e94 MD |
415 | if (ret != bytecode->len) |
416 | return -EINVAL; | |
417 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
cd54f6d9 MD |
418 | } |
419 | ||
fd17d7ce MD |
420 | int ustctl_set_exclusion(int sock, struct lttng_ust_abi_event_exclusion *exclusion, |
421 | struct lttng_ust_abi_object_data *obj_data) | |
da57c034 JI |
422 | { |
423 | struct ustcomm_ust_msg lum; | |
424 | struct ustcomm_ust_reply lur; | |
425 | int ret; | |
426 | ||
427 | if (!obj_data) { | |
428 | return -EINVAL; | |
429 | } | |
430 | ||
431 | memset(&lum, 0, sizeof(lum)); | |
432 | lum.handle = obj_data->handle; | |
fd17d7ce | 433 | lum.cmd = LTTNG_UST_ABI_EXCLUSION; |
da57c034 JI |
434 | lum.u.exclusion.count = exclusion->count; |
435 | ||
436 | ret = ustcomm_send_app_msg(sock, &lum); | |
437 | if (ret) { | |
438 | return ret; | |
439 | } | |
440 | ||
1628366f | 441 | /* send var len exclusion names */ |
da57c034 JI |
442 | ret = ustcomm_send_unix_sock(sock, |
443 | exclusion->names, | |
fd17d7ce | 444 | exclusion->count * LTTNG_UST_ABI_SYM_NAME_LEN); |
da57c034 JI |
445 | if (ret < 0) { |
446 | return ret; | |
447 | } | |
fd17d7ce | 448 | if (ret != exclusion->count * LTTNG_UST_ABI_SYM_NAME_LEN) { |
da57c034 JI |
449 | return -EINVAL; |
450 | } | |
451 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
452 | } | |
453 | ||
57773204 | 454 | /* Enable event, channel and session ioctl */ |
fd17d7ce | 455 | int ustctl_enable(int sock, struct lttng_ust_abi_object_data *object) |
57773204 MD |
456 | { |
457 | struct ustcomm_ust_msg lum; | |
458 | struct ustcomm_ust_reply lur; | |
459 | int ret; | |
460 | ||
9bfc503d MD |
461 | if (!object) |
462 | return -EINVAL; | |
463 | ||
57773204 MD |
464 | memset(&lum, 0, sizeof(lum)); |
465 | lum.handle = object->handle; | |
fd17d7ce | 466 | lum.cmd = LTTNG_UST_ABI_ENABLE; |
57773204 MD |
467 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
468 | if (ret) | |
469 | return ret; | |
470 | DBG("enabled handle %u", object->handle); | |
471 | return 0; | |
472 | } | |
473 | ||
474 | /* Disable event, channel and session ioctl */ | |
fd17d7ce | 475 | int ustctl_disable(int sock, struct lttng_ust_abi_object_data *object) |
57773204 MD |
476 | { |
477 | struct ustcomm_ust_msg lum; | |
478 | struct ustcomm_ust_reply lur; | |
479 | int ret; | |
480 | ||
9bfc503d MD |
481 | if (!object) |
482 | return -EINVAL; | |
483 | ||
57773204 MD |
484 | memset(&lum, 0, sizeof(lum)); |
485 | lum.handle = object->handle; | |
fd17d7ce | 486 | lum.cmd = LTTNG_UST_ABI_DISABLE; |
57773204 MD |
487 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
488 | if (ret) | |
489 | return ret; | |
490 | DBG("disable handle %u", object->handle); | |
491 | return 0; | |
492 | } | |
493 | ||
4a6ca058 | 494 | int ustctl_start_session(int sock, int handle) |
57773204 | 495 | { |
fd17d7ce | 496 | struct lttng_ust_abi_object_data obj; |
4a6ca058 MD |
497 | |
498 | obj.handle = handle; | |
499 | return ustctl_enable(sock, &obj); | |
57773204 MD |
500 | } |
501 | ||
4a6ca058 | 502 | int ustctl_stop_session(int sock, int handle) |
57773204 | 503 | { |
fd17d7ce | 504 | struct lttng_ust_abi_object_data obj; |
4a6ca058 MD |
505 | |
506 | obj.handle = handle; | |
507 | return ustctl_disable(sock, &obj); | |
57773204 MD |
508 | } |
509 | ||
d8d2416d | 510 | int ustctl_create_event_notifier_group(int sock, int pipe_fd, |
fd17d7ce | 511 | struct lttng_ust_abi_object_data **_event_notifier_group_data) |
d8d2416d | 512 | { |
fd17d7ce | 513 | struct lttng_ust_abi_object_data *event_notifier_group_data; |
d8d2416d FD |
514 | struct ustcomm_ust_msg lum; |
515 | struct ustcomm_ust_reply lur; | |
516 | ssize_t len; | |
517 | int ret; | |
518 | ||
519 | if (!_event_notifier_group_data) | |
520 | return -EINVAL; | |
521 | ||
522 | event_notifier_group_data = zmalloc(sizeof(*event_notifier_group_data)); | |
523 | if (!event_notifier_group_data) | |
524 | return -ENOMEM; | |
525 | ||
fd17d7ce | 526 | event_notifier_group_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER_GROUP; |
d8d2416d FD |
527 | |
528 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
529 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
530 | lum.cmd = LTTNG_UST_ABI_EVENT_NOTIFIER_GROUP_CREATE; | |
d8d2416d FD |
531 | |
532 | ret = ustcomm_send_app_msg(sock, &lum); | |
533 | if (ret) | |
534 | goto error; | |
535 | ||
536 | /* Send event_notifier notification pipe. */ | |
537 | len = ustcomm_send_fds_unix_sock(sock, &pipe_fd, 1); | |
538 | if (len <= 0) { | |
539 | ret = len; | |
540 | goto error; | |
541 | } | |
542 | ||
543 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
544 | if (ret) | |
545 | goto error; | |
546 | ||
547 | event_notifier_group_data->handle = lur.ret_val; | |
548 | DBG("received event_notifier group handle %d", event_notifier_group_data->handle); | |
549 | ||
550 | *_event_notifier_group_data = event_notifier_group_data; | |
551 | ||
552 | ret = 0; | |
553 | goto end; | |
554 | error: | |
555 | free(event_notifier_group_data); | |
556 | ||
557 | end: | |
558 | return ret; | |
559 | } | |
560 | ||
fd17d7ce MD |
561 | int ustctl_create_event_notifier(int sock, struct lttng_ust_abi_event_notifier *event_notifier, |
562 | struct lttng_ust_abi_object_data *event_notifier_group, | |
563 | struct lttng_ust_abi_object_data **_event_notifier_data) | |
d8d2416d FD |
564 | { |
565 | struct ustcomm_ust_msg lum; | |
566 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 567 | struct lttng_ust_abi_object_data *event_notifier_data; |
8406222c | 568 | ssize_t len; |
d8d2416d FD |
569 | int ret; |
570 | ||
571 | if (!event_notifier_group || !_event_notifier_data) | |
572 | return -EINVAL; | |
573 | ||
574 | event_notifier_data = zmalloc(sizeof(*event_notifier_data)); | |
575 | if (!event_notifier_data) | |
576 | return -ENOMEM; | |
577 | ||
fd17d7ce | 578 | event_notifier_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER; |
d8d2416d FD |
579 | |
580 | memset(&lum, 0, sizeof(lum)); | |
581 | lum.handle = event_notifier_group->handle; | |
fd17d7ce | 582 | lum.cmd = LTTNG_UST_ABI_EVENT_NOTIFIER_CREATE; |
8406222c | 583 | lum.u.event_notifier.len = sizeof(*event_notifier); |
d8d2416d | 584 | |
41844673 | 585 | ret = ustcomm_send_app_msg(sock, &lum); |
d8d2416d FD |
586 | if (ret) { |
587 | free(event_notifier_data); | |
588 | return ret; | |
589 | } | |
8406222c MD |
590 | /* Send struct lttng_ust_event_notifier */ |
591 | len = ustcomm_send_unix_sock(sock, event_notifier, sizeof(*event_notifier)); | |
592 | if (len != sizeof(*event_notifier)) { | |
593 | if (len < 0) | |
594 | return len; | |
595 | else | |
596 | return -EIO; | |
597 | } | |
41844673 MD |
598 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); |
599 | if (ret) { | |
600 | free(event_notifier_data); | |
601 | return ret; | |
602 | } | |
d8d2416d FD |
603 | event_notifier_data->handle = lur.ret_val; |
604 | DBG("received event_notifier handle %u", event_notifier_data->handle); | |
605 | *_event_notifier_data = event_notifier_data; | |
606 | ||
607 | return ret; | |
608 | } | |
609 | ||
57773204 MD |
610 | int ustctl_tracepoint_list(int sock) |
611 | { | |
b115631f MD |
612 | struct ustcomm_ust_msg lum; |
613 | struct ustcomm_ust_reply lur; | |
614 | int ret, tp_list_handle; | |
615 | ||
616 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
617 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
618 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_LIST; | |
b115631f MD |
619 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
620 | if (ret) | |
621 | return ret; | |
622 | tp_list_handle = lur.ret_val; | |
623 | DBG("received tracepoint list handle %u", tp_list_handle); | |
624 | return tp_list_handle; | |
625 | } | |
626 | ||
627 | int ustctl_tracepoint_list_get(int sock, int tp_list_handle, | |
fd17d7ce | 628 | struct lttng_ust_abi_tracepoint_iter *iter) |
b115631f MD |
629 | { |
630 | struct ustcomm_ust_msg lum; | |
631 | struct ustcomm_ust_reply lur; | |
632 | int ret; | |
633 | ||
9bfc503d MD |
634 | if (!iter) |
635 | return -EINVAL; | |
636 | ||
b115631f MD |
637 | memset(&lum, 0, sizeof(lum)); |
638 | lum.handle = tp_list_handle; | |
fd17d7ce | 639 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_LIST_GET; |
b115631f MD |
640 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
641 | if (ret) | |
642 | return ret; | |
882a56d7 | 643 | DBG("received tracepoint list entry name %s loglevel %d", |
cbef6901 | 644 | lur.u.tracepoint.name, |
882a56d7 | 645 | lur.u.tracepoint.loglevel); |
cbef6901 | 646 | memcpy(iter, &lur.u.tracepoint, sizeof(*iter)); |
b115631f | 647 | return 0; |
57773204 MD |
648 | } |
649 | ||
40003310 MD |
650 | int ustctl_tracepoint_field_list(int sock) |
651 | { | |
652 | struct ustcomm_ust_msg lum; | |
653 | struct ustcomm_ust_reply lur; | |
654 | int ret, tp_field_list_handle; | |
655 | ||
656 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
657 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
658 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_FIELD_LIST; | |
40003310 MD |
659 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
660 | if (ret) | |
661 | return ret; | |
662 | tp_field_list_handle = lur.ret_val; | |
663 | DBG("received tracepoint field list handle %u", tp_field_list_handle); | |
664 | return tp_field_list_handle; | |
665 | } | |
666 | ||
667 | int ustctl_tracepoint_field_list_get(int sock, int tp_field_list_handle, | |
fd17d7ce | 668 | struct lttng_ust_abi_field_iter *iter) |
40003310 MD |
669 | { |
670 | struct ustcomm_ust_msg lum; | |
671 | struct ustcomm_ust_reply lur; | |
672 | int ret; | |
673 | ssize_t len; | |
674 | ||
675 | if (!iter) | |
676 | return -EINVAL; | |
677 | ||
678 | memset(&lum, 0, sizeof(lum)); | |
679 | lum.handle = tp_field_list_handle; | |
fd17d7ce | 680 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_FIELD_LIST_GET; |
40003310 MD |
681 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
682 | if (ret) | |
683 | return ret; | |
684 | len = ustcomm_recv_unix_sock(sock, iter, sizeof(*iter)); | |
685 | if (len != sizeof(*iter)) { | |
686 | return -EINVAL; | |
687 | } | |
688 | DBG("received tracepoint field list entry event_name %s event_loglevel %d field_name %s field_type %d", | |
689 | iter->event_name, | |
690 | iter->loglevel, | |
691 | iter->field_name, | |
692 | iter->type); | |
693 | return 0; | |
694 | } | |
695 | ||
fd17d7ce | 696 | int ustctl_tracer_version(int sock, struct lttng_ust_abi_tracer_version *v) |
57773204 MD |
697 | { |
698 | struct ustcomm_ust_msg lum; | |
699 | struct ustcomm_ust_reply lur; | |
700 | int ret; | |
701 | ||
9bfc503d MD |
702 | if (!v) |
703 | return -EINVAL; | |
704 | ||
57773204 | 705 | memset(&lum, 0, sizeof(lum)); |
fd17d7ce MD |
706 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
707 | lum.cmd = LTTNG_UST_ABI_TRACER_VERSION; | |
57773204 MD |
708 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
709 | if (ret) | |
710 | return ret; | |
711 | memcpy(v, &lur.u.version, sizeof(*v)); | |
712 | DBG("received tracer version"); | |
713 | return 0; | |
714 | } | |
715 | ||
716 | int ustctl_wait_quiescent(int sock) | |
717 | { | |
718 | struct ustcomm_ust_msg lum; | |
719 | struct ustcomm_ust_reply lur; | |
720 | int ret; | |
721 | ||
722 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
723 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
724 | lum.cmd = LTTNG_UST_ABI_WAIT_QUIESCENT; | |
57773204 MD |
725 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
726 | if (ret) | |
727 | return ret; | |
728 | DBG("waited for quiescent state"); | |
729 | return 0; | |
730 | } | |
731 | ||
fd17d7ce | 732 | int ustctl_calibrate(int sock, struct lttng_ust_abi_calibrate *calibrate) |
57773204 | 733 | { |
9bfc503d MD |
734 | if (!calibrate) |
735 | return -EINVAL; | |
736 | ||
57773204 MD |
737 | return -ENOSYS; |
738 | } | |
739 | ||
fd17d7ce | 740 | int ustctl_sock_flush_buffer(int sock, struct lttng_ust_abi_object_data *object) |
f1fffc57 MD |
741 | { |
742 | struct ustcomm_ust_msg lum; | |
743 | struct ustcomm_ust_reply lur; | |
744 | int ret; | |
745 | ||
9bfc503d MD |
746 | if (!object) |
747 | return -EINVAL; | |
748 | ||
f1fffc57 MD |
749 | memset(&lum, 0, sizeof(lum)); |
750 | lum.handle = object->handle; | |
fd17d7ce | 751 | lum.cmd = LTTNG_UST_ABI_FLUSH_BUFFER; |
f1fffc57 MD |
752 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
753 | if (ret) | |
754 | return ret; | |
755 | DBG("flushed buffer handle %u", object->handle); | |
756 | return 0; | |
757 | } | |
758 | ||
74d81a6c MD |
759 | static |
760 | int ustctl_send_channel(int sock, | |
fd17d7ce | 761 | enum lttng_ust_abi_chan_type type, |
74d81a6c MD |
762 | void *data, |
763 | uint64_t size, | |
ff0f5728 | 764 | int wakeup_fd, |
74d81a6c MD |
765 | int send_fd_only) |
766 | { | |
767 | ssize_t len; | |
768 | ||
769 | if (!send_fd_only) { | |
770 | /* Send mmap size */ | |
771 | len = ustcomm_send_unix_sock(sock, &size, sizeof(size)); | |
772 | if (len != sizeof(size)) { | |
773 | if (len < 0) | |
774 | return len; | |
775 | else | |
776 | return -EIO; | |
777 | } | |
778 | ||
779 | /* Send channel type */ | |
780 | len = ustcomm_send_unix_sock(sock, &type, sizeof(type)); | |
781 | if (len != sizeof(type)) { | |
782 | if (len < 0) | |
783 | return len; | |
784 | else | |
785 | return -EIO; | |
786 | } | |
787 | } | |
788 | ||
789 | /* Send channel data */ | |
790 | len = ustcomm_send_unix_sock(sock, data, size); | |
791 | if (len != size) { | |
792 | if (len < 0) | |
793 | return len; | |
794 | else | |
795 | return -EIO; | |
796 | } | |
57773204 | 797 | |
ff0f5728 MD |
798 | /* Send wakeup fd */ |
799 | len = ustcomm_send_fds_unix_sock(sock, &wakeup_fd, 1); | |
800 | if (len <= 0) { | |
801 | if (len < 0) | |
802 | return len; | |
803 | else | |
804 | return -EIO; | |
805 | } | |
74d81a6c MD |
806 | return 0; |
807 | } | |
808 | ||
809 | static | |
810 | int ustctl_send_stream(int sock, | |
811 | uint32_t stream_nr, | |
812 | uint64_t memory_map_size, | |
813 | int shm_fd, int wakeup_fd, | |
814 | int send_fd_only) | |
57773204 | 815 | { |
74d81a6c MD |
816 | ssize_t len; |
817 | int fds[2]; | |
818 | ||
819 | if (!send_fd_only) { | |
820 | if (shm_fd < 0) { | |
821 | /* finish iteration */ | |
822 | uint64_t v = -1; | |
823 | ||
824 | len = ustcomm_send_unix_sock(sock, &v, sizeof(v)); | |
825 | if (len != sizeof(v)) { | |
826 | if (len < 0) | |
827 | return len; | |
828 | else | |
829 | return -EIO; | |
830 | } | |
831 | return 0; | |
832 | } | |
833 | ||
834 | /* Send mmap size */ | |
835 | len = ustcomm_send_unix_sock(sock, &memory_map_size, | |
836 | sizeof(memory_map_size)); | |
837 | if (len != sizeof(memory_map_size)) { | |
838 | if (len < 0) | |
839 | return len; | |
840 | else | |
841 | return -EIO; | |
842 | } | |
843 | ||
844 | /* Send stream nr */ | |
845 | len = ustcomm_send_unix_sock(sock, &stream_nr, | |
846 | sizeof(stream_nr)); | |
847 | if (len != sizeof(stream_nr)) { | |
848 | if (len < 0) | |
849 | return len; | |
850 | else | |
851 | return -EIO; | |
852 | } | |
853 | } | |
854 | ||
855 | /* Send shm fd and wakeup fd */ | |
856 | fds[0] = shm_fd; | |
857 | fds[1] = wakeup_fd; | |
858 | len = ustcomm_send_fds_unix_sock(sock, fds, 2); | |
859 | if (len <= 0) { | |
860 | if (len < 0) | |
861 | return len; | |
862 | else | |
863 | return -EIO; | |
864 | } | |
865 | return 0; | |
866 | } | |
867 | ||
868 | int ustctl_recv_channel_from_consumer(int sock, | |
fd17d7ce | 869 | struct lttng_ust_abi_object_data **_channel_data) |
74d81a6c | 870 | { |
fd17d7ce | 871 | struct lttng_ust_abi_object_data *channel_data; |
74d81a6c | 872 | ssize_t len; |
ff0f5728 | 873 | int wakeup_fd; |
7a784989 | 874 | int ret; |
57773204 | 875 | |
74d81a6c MD |
876 | channel_data = zmalloc(sizeof(*channel_data)); |
877 | if (!channel_data) { | |
878 | ret = -ENOMEM; | |
879 | goto error_alloc; | |
880 | } | |
fd17d7ce | 881 | channel_data->type = LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL; |
12f3dabc | 882 | channel_data->handle = -1; |
74d81a6c MD |
883 | |
884 | /* recv mmap size */ | |
885 | len = ustcomm_recv_unix_sock(sock, &channel_data->size, | |
886 | sizeof(channel_data->size)); | |
887 | if (len != sizeof(channel_data->size)) { | |
888 | if (len < 0) | |
889 | ret = len; | |
890 | else | |
891 | ret = -EINVAL; | |
892 | goto error; | |
893 | } | |
9bfc503d | 894 | |
74d81a6c MD |
895 | /* recv channel type */ |
896 | len = ustcomm_recv_unix_sock(sock, &channel_data->u.channel.type, | |
897 | sizeof(channel_data->u.channel.type)); | |
898 | if (len != sizeof(channel_data->u.channel.type)) { | |
899 | if (len < 0) | |
900 | ret = len; | |
901 | else | |
902 | ret = -EINVAL; | |
903 | goto error; | |
904 | } | |
905 | ||
906 | /* recv channel data */ | |
907 | channel_data->u.channel.data = zmalloc(channel_data->size); | |
908 | if (!channel_data->u.channel.data) { | |
909 | ret = -ENOMEM; | |
910 | goto error; | |
911 | } | |
912 | len = ustcomm_recv_unix_sock(sock, channel_data->u.channel.data, | |
913 | channel_data->size); | |
914 | if (len != channel_data->size) { | |
915 | if (len < 0) | |
916 | ret = len; | |
917 | else | |
918 | ret = -EINVAL; | |
919 | goto error_recv_data; | |
920 | } | |
ff0f5728 MD |
921 | /* recv wakeup fd */ |
922 | len = ustcomm_recv_fds_unix_sock(sock, &wakeup_fd, 1); | |
923 | if (len <= 0) { | |
924 | if (len < 0) { | |
925 | ret = len; | |
926 | goto error_recv_data; | |
927 | } else { | |
928 | ret = -EIO; | |
929 | goto error_recv_data; | |
930 | } | |
931 | } | |
932 | channel_data->u.channel.wakeup_fd = wakeup_fd; | |
74d81a6c MD |
933 | *_channel_data = channel_data; |
934 | return 0; | |
935 | ||
936 | error_recv_data: | |
937 | free(channel_data->u.channel.data); | |
938 | error: | |
939 | free(channel_data); | |
940 | error_alloc: | |
941 | return ret; | |
942 | } | |
943 | ||
944 | int ustctl_recv_stream_from_consumer(int sock, | |
fd17d7ce | 945 | struct lttng_ust_abi_object_data **_stream_data) |
74d81a6c | 946 | { |
fd17d7ce | 947 | struct lttng_ust_abi_object_data *stream_data; |
74d81a6c MD |
948 | ssize_t len; |
949 | int ret; | |
950 | int fds[2]; | |
951 | ||
952 | stream_data = zmalloc(sizeof(*stream_data)); | |
953 | if (!stream_data) { | |
954 | ret = -ENOMEM; | |
955 | goto error_alloc; | |
57773204 | 956 | } |
74d81a6c | 957 | |
fd17d7ce | 958 | stream_data->type = LTTNG_UST_ABI_OBJECT_TYPE_STREAM; |
74d81a6c MD |
959 | stream_data->handle = -1; |
960 | ||
961 | /* recv mmap size */ | |
962 | len = ustcomm_recv_unix_sock(sock, &stream_data->size, | |
963 | sizeof(stream_data->size)); | |
964 | if (len != sizeof(stream_data->size)) { | |
965 | if (len < 0) | |
966 | ret = len; | |
967 | else | |
968 | ret = -EINVAL; | |
969 | goto error; | |
970 | } | |
971 | if (stream_data->size == -1) { | |
972 | ret = -LTTNG_UST_ERR_NOENT; | |
973 | goto error; | |
974 | } | |
975 | ||
976 | /* recv stream nr */ | |
977 | len = ustcomm_recv_unix_sock(sock, &stream_data->u.stream.stream_nr, | |
978 | sizeof(stream_data->u.stream.stream_nr)); | |
979 | if (len != sizeof(stream_data->u.stream.stream_nr)) { | |
980 | if (len < 0) | |
981 | ret = len; | |
982 | else | |
983 | ret = -EINVAL; | |
984 | goto error; | |
985 | } | |
986 | ||
987 | /* recv shm fd and wakeup fd */ | |
988 | len = ustcomm_recv_fds_unix_sock(sock, fds, 2); | |
989 | if (len <= 0) { | |
990 | if (len < 0) { | |
991 | ret = len; | |
992 | goto error; | |
993 | } else { | |
994 | ret = -EIO; | |
995 | goto error; | |
0bfe09ec | 996 | } |
0bfe09ec | 997 | } |
74d81a6c MD |
998 | stream_data->u.stream.shm_fd = fds[0]; |
999 | stream_data->u.stream.wakeup_fd = fds[1]; | |
1000 | *_stream_data = stream_data; | |
1001 | return 0; | |
0bfe09ec | 1002 | |
74d81a6c MD |
1003 | error: |
1004 | free(stream_data); | |
1005 | error_alloc: | |
1006 | return ret; | |
1007 | } | |
1008 | ||
1009 | int ustctl_send_channel_to_ust(int sock, int session_handle, | |
fd17d7ce | 1010 | struct lttng_ust_abi_object_data *channel_data) |
74d81a6c MD |
1011 | { |
1012 | struct ustcomm_ust_msg lum; | |
1013 | struct ustcomm_ust_reply lur; | |
1014 | int ret; | |
1015 | ||
1016 | if (!channel_data) | |
1017 | return -EINVAL; | |
1018 | ||
1019 | memset(&lum, 0, sizeof(lum)); | |
1020 | lum.handle = session_handle; | |
fd17d7ce | 1021 | lum.cmd = LTTNG_UST_ABI_CHANNEL; |
74d81a6c MD |
1022 | lum.u.channel.len = channel_data->size; |
1023 | lum.u.channel.type = channel_data->u.channel.type; | |
1024 | ret = ustcomm_send_app_msg(sock, &lum); | |
1025 | if (ret) | |
1026 | return ret; | |
1027 | ||
1028 | ret = ustctl_send_channel(sock, | |
1029 | channel_data->u.channel.type, | |
1030 | channel_data->u.channel.data, | |
1031 | channel_data->size, | |
ff0f5728 | 1032 | channel_data->u.channel.wakeup_fd, |
74d81a6c MD |
1033 | 1); |
1034 | if (ret) | |
1035 | return ret; | |
1036 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1037 | if (!ret) { | |
7f2348b8 | 1038 | channel_data->handle = lur.ret_val; |
57773204 | 1039 | } |
74d81a6c MD |
1040 | return ret; |
1041 | } | |
1042 | ||
1043 | int ustctl_send_stream_to_ust(int sock, | |
fd17d7ce MD |
1044 | struct lttng_ust_abi_object_data *channel_data, |
1045 | struct lttng_ust_abi_object_data *stream_data) | |
74d81a6c MD |
1046 | { |
1047 | struct ustcomm_ust_msg lum; | |
1048 | struct ustcomm_ust_reply lur; | |
1049 | int ret; | |
1050 | ||
1051 | memset(&lum, 0, sizeof(lum)); | |
1052 | lum.handle = channel_data->handle; | |
fd17d7ce | 1053 | lum.cmd = LTTNG_UST_ABI_STREAM; |
74d81a6c MD |
1054 | lum.u.stream.len = stream_data->size; |
1055 | lum.u.stream.stream_nr = stream_data->u.stream.stream_nr; | |
1056 | ret = ustcomm_send_app_msg(sock, &lum); | |
1057 | if (ret) | |
1058 | return ret; | |
1059 | ||
1060 | assert(stream_data); | |
fd17d7ce | 1061 | assert(stream_data->type == LTTNG_UST_ABI_OBJECT_TYPE_STREAM); |
74d81a6c MD |
1062 | |
1063 | ret = ustctl_send_stream(sock, | |
1064 | stream_data->u.stream.stream_nr, | |
1065 | stream_data->size, | |
1066 | stream_data->u.stream.shm_fd, | |
1067 | stream_data->u.stream.wakeup_fd, 1); | |
1068 | if (ret) | |
1069 | return ret; | |
1070 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1071 | } | |
1072 | ||
fd17d7ce MD |
1073 | int ustctl_duplicate_ust_object_data(struct lttng_ust_abi_object_data **dest, |
1074 | struct lttng_ust_abi_object_data *src) | |
12f3dabc | 1075 | { |
fd17d7ce | 1076 | struct lttng_ust_abi_object_data *obj; |
12f3dabc MD |
1077 | int ret; |
1078 | ||
1079 | if (src->handle != -1) { | |
1080 | ret = -EINVAL; | |
1081 | goto error; | |
1082 | } | |
1083 | ||
1084 | obj = zmalloc(sizeof(*obj)); | |
1085 | if (!obj) { | |
1086 | ret = -ENOMEM; | |
1087 | goto error; | |
1088 | } | |
1089 | ||
1090 | obj->type = src->type; | |
1091 | obj->handle = src->handle; | |
1092 | obj->size = src->size; | |
1093 | ||
1094 | switch (obj->type) { | |
fd17d7ce | 1095 | case LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL: |
12f3dabc MD |
1096 | { |
1097 | obj->u.channel.type = src->u.channel.type; | |
1098 | if (src->u.channel.wakeup_fd >= 0) { | |
1099 | obj->u.channel.wakeup_fd = | |
1100 | dup(src->u.channel.wakeup_fd); | |
1101 | if (obj->u.channel.wakeup_fd < 0) { | |
1102 | ret = errno; | |
1103 | goto chan_error_wakeup_fd; | |
1104 | } | |
1105 | } else { | |
1106 | obj->u.channel.wakeup_fd = | |
1107 | src->u.channel.wakeup_fd; | |
1108 | } | |
1109 | obj->u.channel.data = zmalloc(obj->size); | |
1110 | if (!obj->u.channel.data) { | |
1111 | ret = -ENOMEM; | |
1112 | goto chan_error_alloc; | |
1113 | } | |
1114 | memcpy(obj->u.channel.data, src->u.channel.data, obj->size); | |
1115 | break; | |
1116 | ||
1117 | chan_error_alloc: | |
1118 | if (src->u.channel.wakeup_fd >= 0) { | |
1119 | int closeret; | |
1120 | ||
1121 | closeret = close(obj->u.channel.wakeup_fd); | |
1122 | if (closeret) { | |
1123 | PERROR("close"); | |
1124 | } | |
1125 | } | |
1126 | chan_error_wakeup_fd: | |
1127 | goto error_type; | |
1128 | ||
1129 | } | |
1130 | ||
fd17d7ce | 1131 | case LTTNG_UST_ABI_OBJECT_TYPE_STREAM: |
12f3dabc MD |
1132 | { |
1133 | obj->u.stream.stream_nr = src->u.stream.stream_nr; | |
1134 | if (src->u.stream.wakeup_fd >= 0) { | |
1135 | obj->u.stream.wakeup_fd = | |
1136 | dup(src->u.stream.wakeup_fd); | |
1137 | if (obj->u.stream.wakeup_fd < 0) { | |
1138 | ret = errno; | |
1139 | goto stream_error_wakeup_fd; | |
1140 | } | |
1141 | } else { | |
1142 | obj->u.stream.wakeup_fd = | |
1143 | src->u.stream.wakeup_fd; | |
1144 | } | |
1145 | ||
1146 | if (src->u.stream.shm_fd >= 0) { | |
1147 | obj->u.stream.shm_fd = | |
1148 | dup(src->u.stream.shm_fd); | |
1149 | if (obj->u.stream.shm_fd < 0) { | |
1150 | ret = errno; | |
1151 | goto stream_error_shm_fd; | |
1152 | } | |
1153 | } else { | |
1154 | obj->u.stream.shm_fd = | |
1155 | src->u.stream.shm_fd; | |
1156 | } | |
1157 | break; | |
1158 | ||
1159 | stream_error_shm_fd: | |
1160 | if (src->u.stream.wakeup_fd >= 0) { | |
1161 | int closeret; | |
1162 | ||
1163 | closeret = close(obj->u.stream.wakeup_fd); | |
1164 | if (closeret) { | |
1165 | PERROR("close"); | |
1166 | } | |
1167 | } | |
1168 | stream_error_wakeup_fd: | |
1169 | goto error_type; | |
1170 | } | |
1171 | ||
fd17d7ce | 1172 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER: |
ebabbf58 MD |
1173 | { |
1174 | obj->u.counter.data = zmalloc(obj->size); | |
1175 | if (!obj->u.counter.data) { | |
1176 | ret = -ENOMEM; | |
1177 | goto error_type; | |
1178 | } | |
1179 | memcpy(obj->u.counter.data, src->u.counter.data, obj->size); | |
1180 | break; | |
1181 | } | |
1182 | ||
fd17d7ce | 1183 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL: |
ebabbf58 MD |
1184 | { |
1185 | if (src->u.counter_global.shm_fd >= 0) { | |
1186 | obj->u.counter_global.shm_fd = | |
1187 | dup(src->u.counter_global.shm_fd); | |
1188 | if (obj->u.counter_global.shm_fd < 0) { | |
1189 | ret = errno; | |
1190 | goto error_type; | |
1191 | } | |
1192 | } | |
1193 | break; | |
1194 | } | |
1195 | ||
fd17d7ce | 1196 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU: |
ebabbf58 MD |
1197 | { |
1198 | obj->u.counter_cpu.cpu_nr = src->u.counter_cpu.cpu_nr; | |
1199 | if (src->u.counter_cpu.shm_fd >= 0) { | |
1200 | obj->u.counter_cpu.shm_fd = | |
1201 | dup(src->u.counter_cpu.shm_fd); | |
1202 | if (obj->u.counter_cpu.shm_fd < 0) { | |
1203 | ret = errno; | |
1204 | goto error_type; | |
1205 | } | |
1206 | } | |
1207 | break; | |
1208 | } | |
1209 | ||
12f3dabc MD |
1210 | default: |
1211 | ret = -EINVAL; | |
1212 | goto error_type; | |
1213 | } | |
1214 | ||
1215 | *dest = obj; | |
1216 | return 0; | |
1217 | ||
1218 | error_type: | |
1219 | free(obj); | |
1220 | error: | |
1221 | return ret; | |
1222 | } | |
1223 | ||
74d81a6c MD |
1224 | |
1225 | /* Buffer operations */ | |
1226 | ||
5ea386c3 MD |
1227 | int ustctl_get_nr_stream_per_channel(void) |
1228 | { | |
1229 | return num_possible_cpus(); | |
1230 | } | |
1231 | ||
74d81a6c | 1232 | struct ustctl_consumer_channel * |
5ea386c3 MD |
1233 | ustctl_create_channel(struct ustctl_consumer_channel_attr *attr, |
1234 | const int *stream_fds, int nr_stream_fds) | |
74d81a6c MD |
1235 | { |
1236 | struct ustctl_consumer_channel *chan; | |
1237 | const char *transport_name; | |
1238 | struct lttng_transport *transport; | |
1239 | ||
1240 | switch (attr->type) { | |
fd17d7ce MD |
1241 | case LTTNG_UST_ABI_CHAN_PER_CPU: |
1242 | if (attr->output == LTTNG_UST_ABI_MMAP) { | |
34a91bdb MD |
1243 | if (attr->overwrite) { |
1244 | if (attr->read_timer_interval == 0) { | |
1245 | transport_name = "relay-overwrite-mmap"; | |
1246 | } else { | |
1247 | transport_name = "relay-overwrite-rt-mmap"; | |
1248 | } | |
1249 | } else { | |
1250 | if (attr->read_timer_interval == 0) { | |
1251 | transport_name = "relay-discard-mmap"; | |
1252 | } else { | |
1253 | transport_name = "relay-discard-rt-mmap"; | |
1254 | } | |
1255 | } | |
74d81a6c MD |
1256 | } else { |
1257 | return NULL; | |
1258 | } | |
c1fca457 | 1259 | break; |
fd17d7ce MD |
1260 | case LTTNG_UST_ABI_CHAN_METADATA: |
1261 | if (attr->output == LTTNG_UST_ABI_MMAP) | |
74d81a6c MD |
1262 | transport_name = "relay-metadata-mmap"; |
1263 | else | |
1264 | return NULL; | |
c1fca457 MD |
1265 | break; |
1266 | default: | |
74d81a6c | 1267 | transport_name = "<unknown>"; |
c1fca457 MD |
1268 | return NULL; |
1269 | } | |
74d81a6c MD |
1270 | |
1271 | transport = lttng_transport_find(transport_name); | |
1272 | if (!transport) { | |
1273 | DBG("LTTng transport %s not found\n", | |
32ce8569 | 1274 | transport_name); |
74d81a6c | 1275 | return NULL; |
7a784989 | 1276 | } |
74d81a6c MD |
1277 | |
1278 | chan = zmalloc(sizeof(*chan)); | |
1279 | if (!chan) | |
1280 | return NULL; | |
1281 | ||
1282 | chan->chan = transport->ops.channel_create(transport_name, NULL, | |
32ce8569 | 1283 | attr->subbuf_size, attr->num_subbuf, |
74d81a6c | 1284 | attr->switch_timer_interval, |
32ce8569 | 1285 | attr->read_timer_interval, |
a9ff648c | 1286 | attr->uuid, attr->chan_id, |
b2c5f61a MD |
1287 | stream_fds, nr_stream_fds, |
1288 | attr->blocking_timeout); | |
74d81a6c MD |
1289 | if (!chan->chan) { |
1290 | goto chan_error; | |
1291 | } | |
1292 | chan->chan->ops = &transport->ops; | |
1293 | memcpy(&chan->attr, attr, sizeof(chan->attr)); | |
cb7378b3 MD |
1294 | chan->wait_fd = ustctl_channel_get_wait_fd(chan); |
1295 | chan->wakeup_fd = ustctl_channel_get_wakeup_fd(chan); | |
74d81a6c MD |
1296 | return chan; |
1297 | ||
1298 | chan_error: | |
1299 | free(chan); | |
1300 | return NULL; | |
57773204 MD |
1301 | } |
1302 | ||
74d81a6c | 1303 | void ustctl_destroy_channel(struct ustctl_consumer_channel *chan) |
57773204 | 1304 | { |
b24e4e91 MD |
1305 | (void) ustctl_channel_close_wait_fd(chan); |
1306 | (void) ustctl_channel_close_wakeup_fd(chan); | |
74d81a6c MD |
1307 | chan->chan->ops->channel_destroy(chan->chan); |
1308 | free(chan); | |
1309 | } | |
1310 | ||
1311 | int ustctl_send_channel_to_sessiond(int sock, | |
1312 | struct ustctl_consumer_channel *channel) | |
1313 | { | |
1314 | struct shm_object_table *table; | |
57773204 | 1315 | |
74d81a6c MD |
1316 | table = channel->chan->handle->table; |
1317 | if (table->size <= 0) | |
9bfc503d | 1318 | return -EINVAL; |
74d81a6c MD |
1319 | return ustctl_send_channel(sock, |
1320 | channel->attr.type, | |
1321 | table->objects[0].memory_map, | |
1322 | table->objects[0].memory_map_size, | |
ff0f5728 | 1323 | channel->wakeup_fd, |
74d81a6c MD |
1324 | 0); |
1325 | } | |
9bfc503d | 1326 | |
74d81a6c MD |
1327 | int ustctl_send_stream_to_sessiond(int sock, |
1328 | struct ustctl_consumer_stream *stream) | |
1329 | { | |
1330 | if (!stream) | |
1331 | return ustctl_send_stream(sock, -1U, -1U, -1, -1, 0); | |
1332 | ||
1333 | return ustctl_send_stream(sock, | |
1334 | stream->cpu, | |
1335 | stream->memory_map_size, | |
1336 | stream->shm_fd, stream->wakeup_fd, | |
1337 | 0); | |
57773204 MD |
1338 | } |
1339 | ||
c9023c93 MD |
1340 | int ustctl_write_metadata_to_channel( |
1341 | struct ustctl_consumer_channel *channel, | |
1342 | const char *metadata_str, /* NOT null-terminated */ | |
1343 | size_t len) /* metadata length */ | |
1344 | { | |
1345 | struct lttng_ust_lib_ring_buffer_ctx ctx; | |
1346 | struct lttng_channel *chan = channel->chan; | |
1347 | const char *str = metadata_str; | |
1348 | int ret = 0, waitret; | |
1349 | size_t reserve_len, pos; | |
1350 | ||
1351 | for (pos = 0; pos < len; pos += reserve_len) { | |
1352 | reserve_len = min_t(size_t, | |
1353 | chan->ops->packet_avail_size(chan->chan, chan->handle), | |
1354 | len - pos); | |
1355 | lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL, reserve_len, | |
2b7080aa | 1356 | sizeof(char), -1, chan->handle); |
c9023c93 MD |
1357 | /* |
1358 | * We don't care about metadata buffer's records lost | |
1359 | * count, because we always retry here. Report error if | |
1360 | * we need to bail out after timeout or being | |
1361 | * interrupted. | |
1362 | */ | |
1363 | waitret = wait_cond_interruptible_timeout( | |
1364 | ({ | |
1365 | ret = chan->ops->event_reserve(&ctx, 0); | |
1366 | ret != -ENOBUFS || !ret; | |
1367 | }), | |
1368 | LTTNG_METADATA_TIMEOUT_MSEC); | |
1369 | if (waitret == -ETIMEDOUT || waitret == -EINTR || ret) { | |
1370 | DBG("LTTng: Failure to write metadata to buffers (%s)\n", | |
1371 | waitret == -EINTR ? "interrupted" : | |
1372 | (ret == -ENOBUFS ? "timeout" : "I/O error")); | |
1373 | if (waitret == -EINTR) | |
1374 | ret = waitret; | |
1375 | goto end; | |
1376 | } | |
1377 | chan->ops->event_write(&ctx, &str[pos], reserve_len); | |
1378 | chan->ops->event_commit(&ctx); | |
1379 | } | |
1380 | end: | |
1381 | return ret; | |
1382 | } | |
1383 | ||
3ef94b0e JD |
1384 | /* |
1385 | * Write at most one packet in the channel. | |
1386 | * Returns the number of bytes written on success, < 0 on error. | |
1387 | */ | |
1388 | ssize_t ustctl_write_one_packet_to_channel( | |
1389 | struct ustctl_consumer_channel *channel, | |
1390 | const char *metadata_str, /* NOT null-terminated */ | |
1391 | size_t len) /* metadata length */ | |
1392 | { | |
1393 | struct lttng_ust_lib_ring_buffer_ctx ctx; | |
1394 | struct lttng_channel *chan = channel->chan; | |
1395 | const char *str = metadata_str; | |
1396 | ssize_t reserve_len; | |
1397 | int ret; | |
1398 | ||
1399 | reserve_len = min_t(ssize_t, | |
1400 | chan->ops->packet_avail_size(chan->chan, chan->handle), | |
1401 | len); | |
1402 | lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL, reserve_len, | |
2b7080aa | 1403 | sizeof(char), -1, chan->handle); |
3ef94b0e JD |
1404 | ret = chan->ops->event_reserve(&ctx, 0); |
1405 | if (ret != 0) { | |
1406 | DBG("LTTng: event reservation failed"); | |
1407 | assert(ret < 0); | |
1408 | reserve_len = ret; | |
1409 | goto end; | |
1410 | } | |
1411 | chan->ops->event_write(&ctx, str, reserve_len); | |
1412 | chan->ops->event_commit(&ctx); | |
1413 | ||
1414 | end: | |
1415 | return reserve_len; | |
1416 | } | |
1417 | ||
ff0f5728 MD |
1418 | int ustctl_channel_close_wait_fd(struct ustctl_consumer_channel *consumer_chan) |
1419 | { | |
1420 | struct channel *chan; | |
cb7378b3 | 1421 | int ret; |
ff0f5728 MD |
1422 | |
1423 | chan = consumer_chan->chan->chan; | |
cb7378b3 | 1424 | ret = ring_buffer_channel_close_wait_fd(&chan->backend.config, |
ff0f5728 | 1425 | chan, chan->handle); |
cb7378b3 MD |
1426 | if (!ret) |
1427 | consumer_chan->wait_fd = -1; | |
1428 | return ret; | |
ff0f5728 MD |
1429 | } |
1430 | ||
1431 | int ustctl_channel_close_wakeup_fd(struct ustctl_consumer_channel *consumer_chan) | |
1432 | { | |
1433 | struct channel *chan; | |
cb7378b3 | 1434 | int ret; |
ff0f5728 MD |
1435 | |
1436 | chan = consumer_chan->chan->chan; | |
cb7378b3 | 1437 | ret = ring_buffer_channel_close_wakeup_fd(&chan->backend.config, |
ff0f5728 | 1438 | chan, chan->handle); |
cb7378b3 MD |
1439 | if (!ret) |
1440 | consumer_chan->wakeup_fd = -1; | |
1441 | return ret; | |
ff0f5728 MD |
1442 | } |
1443 | ||
74d81a6c | 1444 | int ustctl_stream_close_wait_fd(struct ustctl_consumer_stream *stream) |
5224b5c8 MD |
1445 | { |
1446 | struct channel *chan; | |
1447 | ||
74d81a6c | 1448 | chan = stream->chan->chan->chan; |
ff0f5728 | 1449 | return ring_buffer_stream_close_wait_fd(&chan->backend.config, |
74d81a6c | 1450 | chan, stream->handle, stream->cpu); |
5224b5c8 MD |
1451 | } |
1452 | ||
74d81a6c | 1453 | int ustctl_stream_close_wakeup_fd(struct ustctl_consumer_stream *stream) |
6e922b24 | 1454 | { |
66bdd22a | 1455 | struct channel *chan; |
74d81a6c MD |
1456 | |
1457 | chan = stream->chan->chan->chan; | |
ff0f5728 | 1458 | return ring_buffer_stream_close_wakeup_fd(&chan->backend.config, |
74d81a6c MD |
1459 | chan, stream->handle, stream->cpu); |
1460 | } | |
1461 | ||
1462 | struct ustctl_consumer_stream * | |
1463 | ustctl_create_stream(struct ustctl_consumer_channel *channel, | |
1464 | int cpu) | |
1465 | { | |
1466 | struct ustctl_consumer_stream *stream; | |
1467 | struct lttng_ust_shm_handle *handle; | |
1468 | struct channel *chan; | |
1469 | int shm_fd, wait_fd, wakeup_fd; | |
1470 | uint64_t memory_map_size; | |
4cfec15c | 1471 | struct lttng_ust_lib_ring_buffer *buf; |
6e922b24 MD |
1472 | int ret; |
1473 | ||
74d81a6c MD |
1474 | if (!channel) |
1475 | return NULL; | |
1476 | handle = channel->chan->handle; | |
9bfc503d MD |
1477 | if (!handle) |
1478 | return NULL; | |
1479 | ||
74d81a6c | 1480 | chan = channel->chan->chan; |
6e922b24 | 1481 | buf = channel_get_ring_buffer(&chan->backend.config, |
74d81a6c MD |
1482 | chan, cpu, handle, &shm_fd, &wait_fd, |
1483 | &wakeup_fd, &memory_map_size); | |
6e922b24 MD |
1484 | if (!buf) |
1485 | return NULL; | |
74d81a6c | 1486 | ret = lib_ring_buffer_open_read(buf, handle); |
6e922b24 MD |
1487 | if (ret) |
1488 | return NULL; | |
74d81a6c MD |
1489 | |
1490 | stream = zmalloc(sizeof(*stream)); | |
1491 | if (!stream) | |
1492 | goto alloc_error; | |
1493 | stream->handle = handle; | |
1494 | stream->buf = buf; | |
1495 | stream->chan = channel; | |
1496 | stream->shm_fd = shm_fd; | |
1497 | stream->wait_fd = wait_fd; | |
1498 | stream->wakeup_fd = wakeup_fd; | |
1499 | stream->memory_map_size = memory_map_size; | |
1500 | stream->cpu = cpu; | |
1501 | return stream; | |
1502 | ||
1503 | alloc_error: | |
1504 | return NULL; | |
1505 | } | |
1506 | ||
1507 | void ustctl_destroy_stream(struct ustctl_consumer_stream *stream) | |
1508 | { | |
1509 | struct lttng_ust_lib_ring_buffer *buf; | |
1510 | struct ustctl_consumer_channel *consumer_chan; | |
1511 | ||
1512 | assert(stream); | |
1513 | buf = stream->buf; | |
1514 | consumer_chan = stream->chan; | |
b24e4e91 MD |
1515 | (void) ustctl_stream_close_wait_fd(stream); |
1516 | (void) ustctl_stream_close_wakeup_fd(stream); | |
74d81a6c MD |
1517 | lib_ring_buffer_release_read(buf, consumer_chan->chan->handle); |
1518 | free(stream); | |
6e922b24 MD |
1519 | } |
1520 | ||
ff0f5728 MD |
1521 | int ustctl_channel_get_wait_fd(struct ustctl_consumer_channel *chan) |
1522 | { | |
1523 | if (!chan) | |
1524 | return -EINVAL; | |
1525 | return shm_get_wait_fd(chan->chan->handle, | |
1526 | &chan->chan->handle->chan._ref); | |
1527 | } | |
1528 | ||
1529 | int ustctl_channel_get_wakeup_fd(struct ustctl_consumer_channel *chan) | |
1530 | { | |
1531 | if (!chan) | |
1532 | return -EINVAL; | |
1533 | return shm_get_wakeup_fd(chan->chan->handle, | |
1534 | &chan->chan->handle->chan._ref); | |
1535 | } | |
1536 | ||
1537 | int ustctl_stream_get_wait_fd(struct ustctl_consumer_stream *stream) | |
6e922b24 | 1538 | { |
74d81a6c MD |
1539 | struct lttng_ust_lib_ring_buffer *buf; |
1540 | struct ustctl_consumer_channel *consumer_chan; | |
1541 | ||
1542 | if (!stream) | |
1543 | return -EINVAL; | |
1544 | buf = stream->buf; | |
1545 | consumer_chan = stream->chan; | |
1546 | return shm_get_wait_fd(consumer_chan->chan->handle, &buf->self._ref); | |
1547 | } | |
1548 | ||
ff0f5728 | 1549 | int ustctl_stream_get_wakeup_fd(struct ustctl_consumer_stream *stream) |
74d81a6c MD |
1550 | { |
1551 | struct lttng_ust_lib_ring_buffer *buf; | |
1552 | struct ustctl_consumer_channel *consumer_chan; | |
1553 | ||
1554 | if (!stream) | |
1555 | return -EINVAL; | |
1556 | buf = stream->buf; | |
1557 | consumer_chan = stream->chan; | |
1558 | return shm_get_wakeup_fd(consumer_chan->chan->handle, &buf->self._ref); | |
6e922b24 MD |
1559 | } |
1560 | ||
57773204 MD |
1561 | /* For mmap mode, readable without "get" operation */ |
1562 | ||
74d81a6c | 1563 | void *ustctl_get_mmap_base(struct ustctl_consumer_stream *stream) |
9095efe9 | 1564 | { |
74d81a6c MD |
1565 | struct lttng_ust_lib_ring_buffer *buf; |
1566 | struct ustctl_consumer_channel *consumer_chan; | |
1567 | ||
1568 | if (!stream) | |
9bfc503d | 1569 | return NULL; |
74d81a6c MD |
1570 | buf = stream->buf; |
1571 | consumer_chan = stream->chan; | |
1572 | return shmp(consumer_chan->chan->handle, buf->backend.memory_map); | |
9095efe9 MD |
1573 | } |
1574 | ||
57773204 | 1575 | /* returns the length to mmap. */ |
74d81a6c | 1576 | int ustctl_get_mmap_len(struct ustctl_consumer_stream *stream, |
57773204 MD |
1577 | unsigned long *len) |
1578 | { | |
74d81a6c | 1579 | struct ustctl_consumer_channel *consumer_chan; |
57773204 | 1580 | unsigned long mmap_buf_len; |
66bdd22a | 1581 | struct channel *chan; |
57773204 | 1582 | |
74d81a6c | 1583 | if (!stream) |
9bfc503d | 1584 | return -EINVAL; |
74d81a6c MD |
1585 | consumer_chan = stream->chan; |
1586 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1587 | if (chan->backend.config.output != RING_BUFFER_MMAP) |
1588 | return -EINVAL; | |
1589 | mmap_buf_len = chan->backend.buf_size; | |
1590 | if (chan->backend.extra_reader_sb) | |
1591 | mmap_buf_len += chan->backend.subbuf_size; | |
1592 | if (mmap_buf_len > INT_MAX) | |
1593 | return -EFBIG; | |
1594 | *len = mmap_buf_len; | |
1595 | return 0; | |
1596 | } | |
1597 | ||
1598 | /* returns the maximum size for sub-buffers. */ | |
74d81a6c | 1599 | int ustctl_get_max_subbuf_size(struct ustctl_consumer_stream *stream, |
57773204 MD |
1600 | unsigned long *len) |
1601 | { | |
74d81a6c | 1602 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1603 | struct channel *chan; |
57773204 | 1604 | |
74d81a6c | 1605 | if (!stream) |
9bfc503d | 1606 | return -EINVAL; |
74d81a6c MD |
1607 | consumer_chan = stream->chan; |
1608 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1609 | *len = chan->backend.subbuf_size; |
1610 | return 0; | |
1611 | } | |
1612 | ||
1613 | /* | |
1614 | * For mmap mode, operate on the current packet (between get/put or | |
1615 | * get_next/put_next). | |
1616 | */ | |
1617 | ||
1618 | /* returns the offset of the subbuffer belonging to the mmap reader. */ | |
74d81a6c MD |
1619 | int ustctl_get_mmap_read_offset(struct ustctl_consumer_stream *stream, |
1620 | unsigned long *off) | |
57773204 | 1621 | { |
66bdd22a | 1622 | struct channel *chan; |
57773204 | 1623 | unsigned long sb_bindex; |
74d81a6c MD |
1624 | struct lttng_ust_lib_ring_buffer *buf; |
1625 | struct ustctl_consumer_channel *consumer_chan; | |
34daae3e MD |
1626 | struct lttng_ust_lib_ring_buffer_backend_pages_shmp *barray_idx; |
1627 | struct lttng_ust_lib_ring_buffer_backend_pages *pages; | |
57773204 | 1628 | |
74d81a6c | 1629 | if (!stream) |
9bfc503d | 1630 | return -EINVAL; |
74d81a6c MD |
1631 | buf = stream->buf; |
1632 | consumer_chan = stream->chan; | |
1633 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1634 | if (chan->backend.config.output != RING_BUFFER_MMAP) |
1635 | return -EINVAL; | |
1636 | sb_bindex = subbuffer_id_get_index(&chan->backend.config, | |
32ce8569 | 1637 | buf->backend.buf_rsb.id); |
34daae3e MD |
1638 | barray_idx = shmp_index(consumer_chan->chan->handle, buf->backend.array, |
1639 | sb_bindex); | |
1640 | if (!barray_idx) | |
1641 | return -EINVAL; | |
1642 | pages = shmp(consumer_chan->chan->handle, barray_idx->shmp); | |
1643 | if (!pages) | |
1644 | return -EINVAL; | |
1645 | *off = pages->mmap_offset; | |
57773204 MD |
1646 | return 0; |
1647 | } | |
1648 | ||
1649 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
74d81a6c MD |
1650 | int ustctl_get_subbuf_size(struct ustctl_consumer_stream *stream, |
1651 | unsigned long *len) | |
57773204 | 1652 | { |
74d81a6c | 1653 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1654 | struct channel *chan; |
74d81a6c | 1655 | struct lttng_ust_lib_ring_buffer *buf; |
57773204 | 1656 | |
74d81a6c | 1657 | if (!stream) |
9bfc503d MD |
1658 | return -EINVAL; |
1659 | ||
74d81a6c MD |
1660 | buf = stream->buf; |
1661 | consumer_chan = stream->chan; | |
1662 | chan = consumer_chan->chan->chan; | |
57773204 | 1663 | *len = lib_ring_buffer_get_read_data_size(&chan->backend.config, buf, |
74d81a6c | 1664 | consumer_chan->chan->handle); |
57773204 MD |
1665 | return 0; |
1666 | } | |
1667 | ||
1668 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
74d81a6c MD |
1669 | int ustctl_get_padded_subbuf_size(struct ustctl_consumer_stream *stream, |
1670 | unsigned long *len) | |
57773204 | 1671 | { |
74d81a6c | 1672 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1673 | struct channel *chan; |
74d81a6c | 1674 | struct lttng_ust_lib_ring_buffer *buf; |
57773204 | 1675 | |
74d81a6c | 1676 | if (!stream) |
9bfc503d | 1677 | return -EINVAL; |
74d81a6c MD |
1678 | buf = stream->buf; |
1679 | consumer_chan = stream->chan; | |
1680 | chan = consumer_chan->chan->chan; | |
57773204 | 1681 | *len = lib_ring_buffer_get_read_data_size(&chan->backend.config, buf, |
74d81a6c | 1682 | consumer_chan->chan->handle); |
b72687b8 | 1683 | *len = LTTNG_UST_PAGE_ALIGN(*len); |
57773204 MD |
1684 | return 0; |
1685 | } | |
1686 | ||
1687 | /* Get exclusive read access to the next sub-buffer that can be read. */ | |
74d81a6c | 1688 | int ustctl_get_next_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1689 | { |
74d81a6c MD |
1690 | struct lttng_ust_lib_ring_buffer *buf; |
1691 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1692 | |
74d81a6c MD |
1693 | if (!stream) |
1694 | return -EINVAL; | |
1695 | buf = stream->buf; | |
1696 | consumer_chan = stream->chan; | |
1697 | return lib_ring_buffer_get_next_subbuf(buf, | |
1698 | consumer_chan->chan->handle); | |
57773204 MD |
1699 | } |
1700 | ||
1701 | ||
1702 | /* Release exclusive sub-buffer access, move consumer forward. */ | |
74d81a6c | 1703 | int ustctl_put_next_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1704 | { |
74d81a6c MD |
1705 | struct lttng_ust_lib_ring_buffer *buf; |
1706 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1707 | |
74d81a6c MD |
1708 | if (!stream) |
1709 | return -EINVAL; | |
1710 | buf = stream->buf; | |
1711 | consumer_chan = stream->chan; | |
1712 | lib_ring_buffer_put_next_subbuf(buf, consumer_chan->chan->handle); | |
57773204 MD |
1713 | return 0; |
1714 | } | |
1715 | ||
1716 | /* snapshot */ | |
1717 | ||
1718 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
74d81a6c | 1719 | int ustctl_snapshot(struct ustctl_consumer_stream *stream) |
57773204 | 1720 | { |
74d81a6c MD |
1721 | struct lttng_ust_lib_ring_buffer *buf; |
1722 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1723 | |
74d81a6c MD |
1724 | if (!stream) |
1725 | return -EINVAL; | |
1726 | buf = stream->buf; | |
1727 | consumer_chan = stream->chan; | |
57773204 | 1728 | return lib_ring_buffer_snapshot(buf, &buf->cons_snapshot, |
74d81a6c | 1729 | &buf->prod_snapshot, consumer_chan->chan->handle); |
57773204 MD |
1730 | } |
1731 | ||
f45930b7 JG |
1732 | /* |
1733 | * Get a snapshot of the current ring buffer producer and consumer positions | |
1734 | * even if the consumed and produced positions are contained within the same | |
1735 | * subbuffer. | |
1736 | */ | |
1737 | int ustctl_snapshot_sample_positions(struct ustctl_consumer_stream *stream) | |
1738 | { | |
1739 | struct lttng_ust_lib_ring_buffer *buf; | |
1740 | struct ustctl_consumer_channel *consumer_chan; | |
1741 | ||
1742 | if (!stream) | |
1743 | return -EINVAL; | |
1744 | buf = stream->buf; | |
1745 | consumer_chan = stream->chan; | |
1746 | return lib_ring_buffer_snapshot_sample_positions(buf, | |
1747 | &buf->cons_snapshot, &buf->prod_snapshot, | |
1748 | consumer_chan->chan->handle); | |
1749 | } | |
1750 | ||
57773204 | 1751 | /* Get the consumer position (iteration start) */ |
74d81a6c MD |
1752 | int ustctl_snapshot_get_consumed(struct ustctl_consumer_stream *stream, |
1753 | unsigned long *pos) | |
57773204 | 1754 | { |
74d81a6c | 1755 | struct lttng_ust_lib_ring_buffer *buf; |
9bfc503d | 1756 | |
74d81a6c MD |
1757 | if (!stream) |
1758 | return -EINVAL; | |
1759 | buf = stream->buf; | |
57773204 MD |
1760 | *pos = buf->cons_snapshot; |
1761 | return 0; | |
1762 | } | |
1763 | ||
1764 | /* Get the producer position (iteration end) */ | |
74d81a6c MD |
1765 | int ustctl_snapshot_get_produced(struct ustctl_consumer_stream *stream, |
1766 | unsigned long *pos) | |
57773204 | 1767 | { |
74d81a6c | 1768 | struct lttng_ust_lib_ring_buffer *buf; |
9bfc503d | 1769 | |
74d81a6c MD |
1770 | if (!stream) |
1771 | return -EINVAL; | |
1772 | buf = stream->buf; | |
57773204 MD |
1773 | *pos = buf->prod_snapshot; |
1774 | return 0; | |
1775 | } | |
1776 | ||
1777 | /* Get exclusive read access to the specified sub-buffer position */ | |
74d81a6c MD |
1778 | int ustctl_get_subbuf(struct ustctl_consumer_stream *stream, |
1779 | unsigned long *pos) | |
57773204 | 1780 | { |
74d81a6c MD |
1781 | struct lttng_ust_lib_ring_buffer *buf; |
1782 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1783 | |
74d81a6c MD |
1784 | if (!stream) |
1785 | return -EINVAL; | |
1786 | buf = stream->buf; | |
1787 | consumer_chan = stream->chan; | |
1788 | return lib_ring_buffer_get_subbuf(buf, *pos, | |
1789 | consumer_chan->chan->handle); | |
57773204 MD |
1790 | } |
1791 | ||
1792 | /* Release exclusive sub-buffer access */ | |
74d81a6c | 1793 | int ustctl_put_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1794 | { |
74d81a6c MD |
1795 | struct lttng_ust_lib_ring_buffer *buf; |
1796 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1797 | |
74d81a6c MD |
1798 | if (!stream) |
1799 | return -EINVAL; | |
1800 | buf = stream->buf; | |
1801 | consumer_chan = stream->chan; | |
1802 | lib_ring_buffer_put_subbuf(buf, consumer_chan->chan->handle); | |
57773204 MD |
1803 | return 0; |
1804 | } | |
1805 | ||
74d81a6c | 1806 | void ustctl_flush_buffer(struct ustctl_consumer_stream *stream, |
b52190f2 | 1807 | int producer_active) |
57773204 | 1808 | { |
74d81a6c MD |
1809 | struct lttng_ust_lib_ring_buffer *buf; |
1810 | struct ustctl_consumer_channel *consumer_chan; | |
1811 | ||
1812 | assert(stream); | |
1813 | buf = stream->buf; | |
1814 | consumer_chan = stream->chan; | |
b52190f2 MD |
1815 | lib_ring_buffer_switch_slow(buf, |
1816 | producer_active ? SWITCH_ACTIVE : SWITCH_FLUSH, | |
74d81a6c MD |
1817 | consumer_chan->chan->handle); |
1818 | } | |
1819 | ||
beca55a1 MD |
1820 | void ustctl_clear_buffer(struct ustctl_consumer_stream *stream) |
1821 | { | |
1822 | struct lttng_ust_lib_ring_buffer *buf; | |
1823 | struct ustctl_consumer_channel *consumer_chan; | |
1824 | ||
1825 | assert(stream); | |
1826 | buf = stream->buf; | |
1827 | consumer_chan = stream->chan; | |
1828 | lib_ring_buffer_switch_slow(buf, SWITCH_ACTIVE, | |
1829 | consumer_chan->chan->handle); | |
1830 | lib_ring_buffer_clear_reader(buf, consumer_chan->chan->handle); | |
1831 | } | |
1832 | ||
b2f3252a JD |
1833 | static |
1834 | struct lttng_ust_client_lib_ring_buffer_client_cb *get_client_cb( | |
1835 | struct lttng_ust_lib_ring_buffer *buf, | |
1836 | struct lttng_ust_shm_handle *handle) | |
1837 | { | |
1838 | struct channel *chan; | |
1839 | const struct lttng_ust_lib_ring_buffer_config *config; | |
1840 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1841 | ||
1842 | chan = shmp(handle, buf->backend.chan); | |
34daae3e MD |
1843 | if (!chan) |
1844 | return NULL; | |
b2f3252a JD |
1845 | config = &chan->backend.config; |
1846 | if (!config->cb_ptr) | |
1847 | return NULL; | |
1848 | client_cb = caa_container_of(config->cb_ptr, | |
1849 | struct lttng_ust_client_lib_ring_buffer_client_cb, | |
1850 | parent); | |
1851 | return client_cb; | |
1852 | } | |
1853 | ||
1854 | int ustctl_get_timestamp_begin(struct ustctl_consumer_stream *stream, | |
1855 | uint64_t *timestamp_begin) | |
1856 | { | |
1857 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1858 | struct lttng_ust_lib_ring_buffer *buf; |
1859 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1860 | |
1861 | if (!stream || !timestamp_begin) | |
1862 | return -EINVAL; | |
e1919a41 MD |
1863 | buf = stream->buf; |
1864 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1865 | client_cb = get_client_cb(buf, handle); |
1866 | if (!client_cb) | |
1867 | return -ENOSYS; | |
1868 | return client_cb->timestamp_begin(buf, handle, timestamp_begin); | |
1869 | } | |
1870 | ||
1871 | int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream, | |
1872 | uint64_t *timestamp_end) | |
1873 | { | |
1874 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1875 | struct lttng_ust_lib_ring_buffer *buf; |
1876 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1877 | |
1878 | if (!stream || !timestamp_end) | |
1879 | return -EINVAL; | |
e1919a41 MD |
1880 | buf = stream->buf; |
1881 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1882 | client_cb = get_client_cb(buf, handle); |
1883 | if (!client_cb) | |
1884 | return -ENOSYS; | |
1885 | return client_cb->timestamp_end(buf, handle, timestamp_end); | |
1886 | } | |
1887 | ||
1888 | int ustctl_get_events_discarded(struct ustctl_consumer_stream *stream, | |
1889 | uint64_t *events_discarded) | |
1890 | { | |
1891 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1892 | struct lttng_ust_lib_ring_buffer *buf; |
1893 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1894 | |
1895 | if (!stream || !events_discarded) | |
1896 | return -EINVAL; | |
e1919a41 MD |
1897 | buf = stream->buf; |
1898 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1899 | client_cb = get_client_cb(buf, handle); |
1900 | if (!client_cb) | |
1901 | return -ENOSYS; | |
1902 | return client_cb->events_discarded(buf, handle, events_discarded); | |
1903 | } | |
1904 | ||
1905 | int ustctl_get_content_size(struct ustctl_consumer_stream *stream, | |
1906 | uint64_t *content_size) | |
1907 | { | |
1908 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1909 | struct lttng_ust_lib_ring_buffer *buf; |
1910 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1911 | |
1912 | if (!stream || !content_size) | |
1913 | return -EINVAL; | |
e1919a41 MD |
1914 | buf = stream->buf; |
1915 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1916 | client_cb = get_client_cb(buf, handle); |
1917 | if (!client_cb) | |
1918 | return -ENOSYS; | |
1919 | return client_cb->content_size(buf, handle, content_size); | |
1920 | } | |
1921 | ||
1922 | int ustctl_get_packet_size(struct ustctl_consumer_stream *stream, | |
1923 | uint64_t *packet_size) | |
1924 | { | |
1925 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1926 | struct lttng_ust_lib_ring_buffer *buf; |
1927 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1928 | |
1929 | if (!stream || !packet_size) | |
1930 | return -EINVAL; | |
e1919a41 MD |
1931 | buf = stream->buf; |
1932 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1933 | client_cb = get_client_cb(buf, handle); |
1934 | if (!client_cb) | |
1935 | return -ENOSYS; | |
1936 | return client_cb->packet_size(buf, handle, packet_size); | |
1937 | } | |
1938 | ||
1939 | int ustctl_get_stream_id(struct ustctl_consumer_stream *stream, | |
1940 | uint64_t *stream_id) | |
1941 | { | |
1942 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1943 | struct lttng_ust_lib_ring_buffer *buf; |
1944 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1945 | |
1946 | if (!stream || !stream_id) | |
1947 | return -EINVAL; | |
e1919a41 MD |
1948 | buf = stream->buf; |
1949 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1950 | client_cb = get_client_cb(buf, handle); |
1951 | if (!client_cb) | |
1952 | return -ENOSYS; | |
1953 | return client_cb->stream_id(buf, handle, stream_id); | |
1954 | } | |
1955 | ||
fca361e8 JD |
1956 | int ustctl_get_current_timestamp(struct ustctl_consumer_stream *stream, |
1957 | uint64_t *ts) | |
1958 | { | |
1959 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1960 | struct lttng_ust_lib_ring_buffer *buf; |
1961 | struct lttng_ust_shm_handle *handle; | |
fca361e8 JD |
1962 | |
1963 | if (!stream || !ts) | |
1964 | return -EINVAL; | |
e1919a41 MD |
1965 | buf = stream->buf; |
1966 | handle = stream->chan->chan->handle; | |
fca361e8 JD |
1967 | client_cb = get_client_cb(buf, handle); |
1968 | if (!client_cb || !client_cb->current_timestamp) | |
1969 | return -ENOSYS; | |
1970 | return client_cb->current_timestamp(buf, handle, ts); | |
1971 | } | |
1972 | ||
1ff31389 JD |
1973 | int ustctl_get_sequence_number(struct ustctl_consumer_stream *stream, |
1974 | uint64_t *seq) | |
1975 | { | |
1976 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1977 | struct lttng_ust_lib_ring_buffer *buf; | |
1978 | struct lttng_ust_shm_handle *handle; | |
1979 | ||
1980 | if (!stream || !seq) | |
1981 | return -EINVAL; | |
1982 | buf = stream->buf; | |
1983 | handle = stream->chan->chan->handle; | |
1984 | client_cb = get_client_cb(buf, handle); | |
1985 | if (!client_cb || !client_cb->sequence_number) | |
1986 | return -ENOSYS; | |
1987 | return client_cb->sequence_number(buf, handle, seq); | |
1988 | } | |
1989 | ||
45a00b05 JD |
1990 | int ustctl_get_instance_id(struct ustctl_consumer_stream *stream, |
1991 | uint64_t *id) | |
1992 | { | |
1993 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1994 | struct lttng_ust_lib_ring_buffer *buf; | |
1995 | struct lttng_ust_shm_handle *handle; | |
1996 | ||
1997 | if (!stream || !id) | |
1998 | return -EINVAL; | |
1999 | buf = stream->buf; | |
2000 | handle = stream->chan->chan->handle; | |
2001 | client_cb = get_client_cb(buf, handle); | |
2002 | if (!client_cb) | |
2003 | return -ENOSYS; | |
2004 | return client_cb->instance_id(buf, handle, id); | |
2005 | } | |
2006 | ||
bd8c1787 | 2007 | #ifdef HAVE_PERF_EVENT |
57201bb3 MD |
2008 | |
2009 | int ustctl_has_perf_counters(void) | |
2010 | { | |
2011 | return 1; | |
2012 | } | |
2013 | ||
2014 | #else | |
2015 | ||
2016 | int ustctl_has_perf_counters(void) | |
2017 | { | |
2018 | return 0; | |
2019 | } | |
2020 | ||
2021 | #endif | |
2022 | ||
a834901f MD |
2023 | #ifdef __linux__ |
2024 | /* | |
2025 | * Override application pid/uid/gid with unix socket credentials. If | |
2026 | * the application announced a pid matching our view, it means it is | |
2027 | * within the same pid namespace, so expose the ppid provided by the | |
2028 | * application. | |
2029 | */ | |
2030 | static | |
2031 | int get_cred(int sock, | |
2032 | const struct ustctl_reg_msg *reg_msg, | |
2033 | uint32_t *pid, | |
2034 | uint32_t *ppid, | |
2035 | uint32_t *uid, | |
2036 | uint32_t *gid) | |
2037 | { | |
2038 | struct ucred ucred; | |
2039 | socklen_t ucred_len = sizeof(struct ucred); | |
2040 | int ret; | |
2041 | ||
2042 | ret = getsockopt(sock, SOL_SOCKET, SO_PEERCRED, &ucred, &ucred_len); | |
2043 | if (ret) { | |
2044 | return -LTTNG_UST_ERR_PEERCRED; | |
2045 | } | |
2046 | DBG("Unix socket peercred [ pid: %u, uid: %u, gid: %u ], " | |
2047 | "application registered claiming [ pid: %u, ppid: %u, uid: %u, gid: %u ]", | |
2048 | ucred.pid, ucred.uid, ucred.gid, | |
2049 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); | |
2050 | if (!ucred.pid) { | |
2051 | ERR("Unix socket credential pid=0. Refusing application in distinct, non-nested pid namespace."); | |
2052 | return -LTTNG_UST_ERR_PEERCRED_PID; | |
2053 | } | |
2054 | *pid = ucred.pid; | |
2055 | *uid = ucred.uid; | |
2056 | *gid = ucred.gid; | |
2057 | if (ucred.pid == reg_msg->pid) { | |
2058 | *ppid = reg_msg->ppid; | |
2059 | } else { | |
2060 | *ppid = 0; | |
2061 | } | |
2062 | return 0; | |
2063 | } | |
2064 | #elif defined(__FreeBSD__) | |
2065 | #include <sys/ucred.h> | |
e494a9cd | 2066 | #include <sys/un.h> |
a834901f MD |
2067 | |
2068 | /* | |
2069 | * Override application uid/gid with unix socket credentials. Use the | |
2070 | * first group of the cr_groups. | |
2071 | * Use the pid and ppid provided by the application on registration. | |
2072 | */ | |
2073 | static | |
2074 | int get_cred(int sock, | |
2075 | const struct ustctl_reg_msg *reg_msg, | |
2076 | uint32_t *pid, | |
2077 | uint32_t *ppid, | |
2078 | uint32_t *uid, | |
2079 | uint32_t *gid) | |
2080 | { | |
2081 | struct xucred xucred; | |
2082 | socklen_t xucred_len = sizeof(struct xucred); | |
2083 | int ret; | |
2084 | ||
2085 | ret = getsockopt(sock, SOL_SOCKET, LOCAL_PEERCRED, &xucred, &xucred_len); | |
2086 | if (ret) { | |
2087 | return -LTTNG_UST_ERR_PEERCRED; | |
2088 | } | |
2089 | if (xucred.cr_version != XUCRED_VERSION || xucred.cr_ngroups < 1) { | |
2090 | return -LTTNG_UST_ERR_PEERCRED; | |
2091 | } | |
2092 | DBG("Unix socket peercred [ uid: %u, gid: %u ], " | |
2093 | "application registered claiming [ pid: %d, ppid: %d, uid: %u, gid: %u ]", | |
e494a9cd | 2094 | xucred.cr_uid, xucred.cr_groups[0], |
a834901f MD |
2095 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); |
2096 | *pid = reg_msg->pid; | |
2097 | *ppid = reg_msg->ppid; | |
e494a9cd | 2098 | *uid = xucred.cr_uid; |
a834901f MD |
2099 | *gid = xucred.cr_groups[0]; |
2100 | return 0; | |
2101 | } | |
2102 | #else | |
2103 | #warning "Using insecure fallback: trusting user id provided by registered applications. Please consider implementing use of unix socket credentials on your platform." | |
2104 | static | |
2105 | int get_cred(int sock, | |
2106 | const struct ustctl_reg_msg *reg_msg, | |
2107 | uint32_t *pid, | |
2108 | uint32_t *ppid, | |
2109 | uint32_t *uid, | |
2110 | uint32_t *gid) | |
2111 | { | |
2112 | DBG("Application registered claiming [ pid: %u, ppid: %d, uid: %u, gid: %u ]", | |
2113 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); | |
2114 | *pid = reg_msg->pid; | |
2115 | *ppid = reg_msg->ppid; | |
2116 | *uid = reg_msg->uid; | |
2117 | *gid = reg_msg->gid; | |
2118 | return 0; | |
2119 | } | |
2120 | #endif | |
2121 | ||
32ce8569 MD |
2122 | /* |
2123 | * Returns 0 on success, negative error value on error. | |
2124 | */ | |
2125 | int ustctl_recv_reg_msg(int sock, | |
2126 | enum ustctl_socket_type *type, | |
2127 | uint32_t *major, | |
2128 | uint32_t *minor, | |
2129 | uint32_t *pid, | |
2130 | uint32_t *ppid, | |
2131 | uint32_t *uid, | |
2132 | uint32_t *gid, | |
2133 | uint32_t *bits_per_long, | |
2134 | uint32_t *uint8_t_alignment, | |
2135 | uint32_t *uint16_t_alignment, | |
2136 | uint32_t *uint32_t_alignment, | |
2137 | uint32_t *uint64_t_alignment, | |
2138 | uint32_t *long_alignment, | |
2139 | int *byte_order, | |
2140 | char *name) | |
2141 | { | |
2142 | ssize_t len; | |
2143 | struct ustctl_reg_msg reg_msg; | |
2144 | ||
2145 | len = ustcomm_recv_unix_sock(sock, ®_msg, sizeof(reg_msg)); | |
2146 | if (len > 0 && len != sizeof(reg_msg)) | |
2147 | return -EIO; | |
2148 | if (len == 0) | |
2149 | return -EPIPE; | |
2150 | if (len < 0) | |
2151 | return len; | |
2152 | ||
fd17d7ce | 2153 | if (reg_msg.magic == LTTNG_UST_ABI_COMM_MAGIC) { |
32ce8569 MD |
2154 | *byte_order = BYTE_ORDER == BIG_ENDIAN ? |
2155 | BIG_ENDIAN : LITTLE_ENDIAN; | |
fd17d7ce | 2156 | } else if (reg_msg.magic == bswap_32(LTTNG_UST_ABI_COMM_MAGIC)) { |
32ce8569 MD |
2157 | *byte_order = BYTE_ORDER == BIG_ENDIAN ? |
2158 | LITTLE_ENDIAN : BIG_ENDIAN; | |
2159 | } else { | |
2160 | return -LTTNG_UST_ERR_INVAL_MAGIC; | |
2161 | } | |
2162 | switch (reg_msg.socket_type) { | |
2163 | case 0: *type = USTCTL_SOCKET_CMD; | |
2164 | break; | |
2165 | case 1: *type = USTCTL_SOCKET_NOTIFY; | |
2166 | break; | |
2167 | default: | |
2168 | return -LTTNG_UST_ERR_INVAL_SOCKET_TYPE; | |
2169 | } | |
2170 | *major = reg_msg.major; | |
2171 | *minor = reg_msg.minor; | |
32ce8569 MD |
2172 | *bits_per_long = reg_msg.bits_per_long; |
2173 | *uint8_t_alignment = reg_msg.uint8_t_alignment; | |
2174 | *uint16_t_alignment = reg_msg.uint16_t_alignment; | |
2175 | *uint32_t_alignment = reg_msg.uint32_t_alignment; | |
2176 | *uint64_t_alignment = reg_msg.uint64_t_alignment; | |
2177 | *long_alignment = reg_msg.long_alignment; | |
2178 | memcpy(name, reg_msg.name, LTTNG_UST_ABI_PROCNAME_LEN); | |
6a359b8a MD |
2179 | if (reg_msg.major < LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE || |
2180 | reg_msg.major > LTTNG_UST_ABI_MAJOR_VERSION) { | |
32ce8569 MD |
2181 | return -LTTNG_UST_ERR_UNSUP_MAJOR; |
2182 | } | |
a834901f | 2183 | return get_cred(sock, ®_msg, pid, ppid, uid, gid); |
32ce8569 MD |
2184 | } |
2185 | ||
2186 | int ustctl_recv_notify(int sock, enum ustctl_notify_cmd *notify_cmd) | |
2187 | { | |
2188 | struct ustcomm_notify_hdr header; | |
2189 | ssize_t len; | |
2190 | ||
2191 | len = ustcomm_recv_unix_sock(sock, &header, sizeof(header)); | |
2192 | if (len > 0 && len != sizeof(header)) | |
2193 | return -EIO; | |
2194 | if (len == 0) | |
2195 | return -EPIPE; | |
2196 | if (len < 0) | |
2197 | return len; | |
2198 | switch (header.notify_cmd) { | |
2199 | case 0: | |
2200 | *notify_cmd = USTCTL_NOTIFY_CMD_EVENT; | |
2201 | break; | |
2202 | case 1: | |
2203 | *notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL; | |
2204 | break; | |
c785c634 MD |
2205 | case 2: |
2206 | *notify_cmd = USTCTL_NOTIFY_CMD_ENUM; | |
2207 | break; | |
32ce8569 MD |
2208 | default: |
2209 | return -EINVAL; | |
2210 | } | |
2211 | return 0; | |
2212 | } | |
2213 | ||
2214 | /* | |
2215 | * Returns 0 on success, negative error value on error. | |
2216 | */ | |
2217 | int ustctl_recv_register_event(int sock, | |
2218 | int *session_objd, | |
2219 | int *channel_objd, | |
2220 | char *event_name, | |
2221 | int *loglevel, | |
2222 | char **signature, | |
2223 | size_t *nr_fields, | |
2224 | struct ustctl_field **fields, | |
2225 | char **model_emf_uri) | |
2226 | { | |
2227 | ssize_t len; | |
2228 | struct ustcomm_notify_event_msg msg; | |
2229 | size_t signature_len, fields_len, model_emf_uri_len; | |
2230 | char *a_sign = NULL, *a_model_emf_uri = NULL; | |
2231 | struct ustctl_field *a_fields = NULL; | |
2232 | ||
2233 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2234 | if (len > 0 && len != sizeof(msg)) | |
2235 | return -EIO; | |
2236 | if (len == 0) | |
2237 | return -EPIPE; | |
2238 | if (len < 0) | |
2239 | return len; | |
2240 | ||
2241 | *session_objd = msg.session_objd; | |
2242 | *channel_objd = msg.channel_objd; | |
fd17d7ce MD |
2243 | strncpy(event_name, msg.event_name, LTTNG_UST_ABI_SYM_NAME_LEN); |
2244 | event_name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; | |
32ce8569 MD |
2245 | *loglevel = msg.loglevel; |
2246 | signature_len = msg.signature_len; | |
2247 | fields_len = msg.fields_len; | |
2248 | ||
2249 | if (fields_len % sizeof(*a_fields) != 0) { | |
2250 | return -EINVAL; | |
2251 | } | |
2252 | ||
2253 | model_emf_uri_len = msg.model_emf_uri_len; | |
2254 | ||
2255 | /* recv signature. contains at least \0. */ | |
2256 | a_sign = zmalloc(signature_len); | |
2257 | if (!a_sign) | |
2258 | return -ENOMEM; | |
2259 | len = ustcomm_recv_unix_sock(sock, a_sign, signature_len); | |
2260 | if (len > 0 && len != signature_len) { | |
2261 | len = -EIO; | |
2262 | goto signature_error; | |
2263 | } | |
2264 | if (len == 0) { | |
2265 | len = -EPIPE; | |
2266 | goto signature_error; | |
2267 | } | |
2268 | if (len < 0) { | |
2269 | goto signature_error; | |
2270 | } | |
2271 | /* Enforce end of string */ | |
111198c2 | 2272 | a_sign[signature_len - 1] = '\0'; |
32ce8569 MD |
2273 | |
2274 | /* recv fields */ | |
2275 | if (fields_len) { | |
2276 | a_fields = zmalloc(fields_len); | |
2277 | if (!a_fields) { | |
2278 | len = -ENOMEM; | |
2279 | goto signature_error; | |
2280 | } | |
2281 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2282 | if (len > 0 && len != fields_len) { | |
2283 | len = -EIO; | |
2284 | goto fields_error; | |
2285 | } | |
2286 | if (len == 0) { | |
2287 | len = -EPIPE; | |
2288 | goto fields_error; | |
2289 | } | |
2290 | if (len < 0) { | |
2291 | goto fields_error; | |
2292 | } | |
2293 | } | |
2294 | ||
2295 | if (model_emf_uri_len) { | |
2296 | /* recv model_emf_uri_len */ | |
2297 | a_model_emf_uri = zmalloc(model_emf_uri_len); | |
2298 | if (!a_model_emf_uri) { | |
2299 | len = -ENOMEM; | |
2300 | goto fields_error; | |
2301 | } | |
2302 | len = ustcomm_recv_unix_sock(sock, a_model_emf_uri, | |
2303 | model_emf_uri_len); | |
2304 | if (len > 0 && len != model_emf_uri_len) { | |
2305 | len = -EIO; | |
2306 | goto model_error; | |
2307 | } | |
2308 | if (len == 0) { | |
2309 | len = -EPIPE; | |
2310 | goto model_error; | |
2311 | } | |
2312 | if (len < 0) { | |
2313 | goto model_error; | |
2314 | } | |
2315 | /* Enforce end of string */ | |
2316 | a_model_emf_uri[model_emf_uri_len - 1] = '\0'; | |
2317 | } | |
2318 | ||
2319 | *signature = a_sign; | |
2320 | *nr_fields = fields_len / sizeof(*a_fields); | |
2321 | *fields = a_fields; | |
2322 | *model_emf_uri = a_model_emf_uri; | |
2323 | ||
2324 | return 0; | |
2325 | ||
2326 | model_error: | |
2327 | free(a_model_emf_uri); | |
2328 | fields_error: | |
2329 | free(a_fields); | |
2330 | signature_error: | |
2331 | free(a_sign); | |
2332 | return len; | |
2333 | } | |
2334 | ||
2335 | /* | |
2336 | * Returns 0 on success, negative error value on error. | |
2337 | */ | |
2338 | int ustctl_reply_register_event(int sock, | |
2339 | uint32_t id, | |
2340 | int ret_code) | |
2341 | { | |
2342 | ssize_t len; | |
2343 | struct { | |
2344 | struct ustcomm_notify_hdr header; | |
2345 | struct ustcomm_notify_event_reply r; | |
2346 | } reply; | |
2347 | ||
2348 | memset(&reply, 0, sizeof(reply)); | |
2349 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_EVENT; | |
2350 | reply.r.ret_code = ret_code; | |
2351 | reply.r.event_id = id; | |
2352 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2353 | if (len > 0 && len != sizeof(reply)) | |
2354 | return -EIO; | |
2355 | if (len < 0) | |
2356 | return len; | |
2357 | return 0; | |
2358 | } | |
2359 | ||
c785c634 MD |
2360 | /* |
2361 | * Returns 0 on success, negative UST or system error value on error. | |
2362 | */ | |
2363 | int ustctl_recv_register_enum(int sock, | |
2364 | int *session_objd, | |
2365 | char *enum_name, | |
2366 | struct ustctl_enum_entry **entries, | |
2367 | size_t *nr_entries) | |
2368 | { | |
2369 | ssize_t len; | |
2370 | struct ustcomm_notify_enum_msg msg; | |
2371 | size_t entries_len; | |
2372 | struct ustctl_enum_entry *a_entries = NULL; | |
2373 | ||
2374 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2375 | if (len > 0 && len != sizeof(msg)) | |
2376 | return -EIO; | |
2377 | if (len == 0) | |
2378 | return -EPIPE; | |
2379 | if (len < 0) | |
2380 | return len; | |
2381 | ||
2382 | *session_objd = msg.session_objd; | |
fd17d7ce MD |
2383 | strncpy(enum_name, msg.enum_name, LTTNG_UST_ABI_SYM_NAME_LEN); |
2384 | enum_name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; | |
c785c634 MD |
2385 | entries_len = msg.entries_len; |
2386 | ||
2387 | if (entries_len % sizeof(*a_entries) != 0) { | |
2388 | return -EINVAL; | |
2389 | } | |
2390 | ||
2391 | /* recv entries */ | |
2392 | if (entries_len) { | |
2393 | a_entries = zmalloc(entries_len); | |
2394 | if (!a_entries) | |
2395 | return -ENOMEM; | |
2396 | len = ustcomm_recv_unix_sock(sock, a_entries, entries_len); | |
2397 | if (len > 0 && len != entries_len) { | |
2398 | len = -EIO; | |
2399 | goto entries_error; | |
2400 | } | |
2401 | if (len == 0) { | |
2402 | len = -EPIPE; | |
2403 | goto entries_error; | |
2404 | } | |
2405 | if (len < 0) { | |
2406 | goto entries_error; | |
2407 | } | |
2408 | } | |
2409 | *nr_entries = entries_len / sizeof(*a_entries); | |
2410 | *entries = a_entries; | |
2411 | ||
2412 | return 0; | |
2413 | ||
2414 | entries_error: | |
2415 | free(a_entries); | |
2416 | return len; | |
2417 | } | |
2418 | ||
2419 | /* | |
2420 | * Returns 0 on success, negative error value on error. | |
2421 | */ | |
2422 | int ustctl_reply_register_enum(int sock, | |
2423 | uint64_t id, | |
2424 | int ret_code) | |
2425 | { | |
2426 | ssize_t len; | |
2427 | struct { | |
2428 | struct ustcomm_notify_hdr header; | |
2429 | struct ustcomm_notify_enum_reply r; | |
2430 | } reply; | |
2431 | ||
2432 | memset(&reply, 0, sizeof(reply)); | |
2433 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_ENUM; | |
2434 | reply.r.ret_code = ret_code; | |
2435 | reply.r.enum_id = id; | |
2436 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2437 | if (len > 0 && len != sizeof(reply)) | |
2438 | return -EIO; | |
2439 | if (len < 0) | |
2440 | return len; | |
2441 | return 0; | |
2442 | } | |
2443 | ||
32ce8569 MD |
2444 | /* |
2445 | * Returns 0 on success, negative UST or system error value on error. | |
2446 | */ | |
2447 | int ustctl_recv_register_channel(int sock, | |
2448 | int *session_objd, /* session descriptor (output) */ | |
2449 | int *channel_objd, /* channel descriptor (output) */ | |
2450 | size_t *nr_fields, | |
2451 | struct ustctl_field **fields) | |
2452 | { | |
2453 | ssize_t len; | |
2454 | struct ustcomm_notify_channel_msg msg; | |
2455 | size_t fields_len; | |
2456 | struct ustctl_field *a_fields; | |
2457 | ||
2458 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2459 | if (len > 0 && len != sizeof(msg)) | |
2460 | return -EIO; | |
2461 | if (len == 0) | |
2462 | return -EPIPE; | |
2463 | if (len < 0) | |
2464 | return len; | |
2465 | ||
2466 | *session_objd = msg.session_objd; | |
2467 | *channel_objd = msg.channel_objd; | |
2468 | fields_len = msg.ctx_fields_len; | |
2469 | ||
2470 | if (fields_len % sizeof(*a_fields) != 0) { | |
2471 | return -EINVAL; | |
2472 | } | |
2473 | ||
2474 | /* recv fields */ | |
2475 | if (fields_len) { | |
2476 | a_fields = zmalloc(fields_len); | |
2477 | if (!a_fields) { | |
2478 | len = -ENOMEM; | |
2479 | goto alloc_error; | |
2480 | } | |
2481 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2482 | if (len > 0 && len != fields_len) { | |
2483 | len = -EIO; | |
2484 | goto fields_error; | |
2485 | } | |
2486 | if (len == 0) { | |
2487 | len = -EPIPE; | |
2488 | goto fields_error; | |
2489 | } | |
2490 | if (len < 0) { | |
2491 | goto fields_error; | |
2492 | } | |
2493 | *fields = a_fields; | |
2494 | } else { | |
2495 | *fields = NULL; | |
2496 | } | |
2497 | *nr_fields = fields_len / sizeof(*a_fields); | |
2498 | return 0; | |
2499 | ||
2500 | fields_error: | |
2501 | free(a_fields); | |
2502 | alloc_error: | |
2503 | return len; | |
2504 | } | |
2505 | ||
2506 | /* | |
2507 | * Returns 0 on success, negative error value on error. | |
2508 | */ | |
2509 | int ustctl_reply_register_channel(int sock, | |
2510 | uint32_t chan_id, | |
2511 | enum ustctl_channel_header header_type, | |
2512 | int ret_code) | |
2513 | { | |
2514 | ssize_t len; | |
2515 | struct { | |
2516 | struct ustcomm_notify_hdr header; | |
2517 | struct ustcomm_notify_channel_reply r; | |
2518 | } reply; | |
2519 | ||
2520 | memset(&reply, 0, sizeof(reply)); | |
2521 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL; | |
2522 | reply.r.ret_code = ret_code; | |
2523 | reply.r.chan_id = chan_id; | |
2524 | switch (header_type) { | |
2525 | case USTCTL_CHANNEL_HEADER_COMPACT: | |
2526 | reply.r.header_type = 1; | |
2527 | break; | |
2528 | case USTCTL_CHANNEL_HEADER_LARGE: | |
2529 | reply.r.header_type = 2; | |
2530 | break; | |
2531 | default: | |
2532 | reply.r.header_type = 0; | |
2533 | break; | |
2534 | } | |
2535 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2536 | if (len > 0 && len != sizeof(reply)) | |
2537 | return -EIO; | |
2538 | if (len < 0) | |
2539 | return len; | |
2540 | return 0; | |
2541 | } | |
2542 | ||
f53329f3 JD |
2543 | /* Regenerate the statedump. */ |
2544 | int ustctl_regenerate_statedump(int sock, int handle) | |
2545 | { | |
2546 | struct ustcomm_ust_msg lum; | |
2547 | struct ustcomm_ust_reply lur; | |
2548 | int ret; | |
2549 | ||
2550 | memset(&lum, 0, sizeof(lum)); | |
2551 | lum.handle = handle; | |
fd17d7ce | 2552 | lum.cmd = LTTNG_UST_ABI_SESSION_STATEDUMP; |
f53329f3 JD |
2553 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
2554 | if (ret) | |
2555 | return ret; | |
2556 | DBG("Regenerated statedump for handle %u", handle); | |
2557 | return 0; | |
2558 | } | |
2559 | ||
ebabbf58 MD |
2560 | /* counter operations */ |
2561 | ||
2562 | int ustctl_get_nr_cpu_per_counter(void) | |
2563 | { | |
2564 | return lttng_counter_num_possible_cpus(); | |
2565 | } | |
2566 | ||
2567 | struct ustctl_daemon_counter * | |
2568 | ustctl_create_counter(size_t nr_dimensions, | |
2569 | const struct ustctl_counter_dimension *dimensions, | |
2570 | int64_t global_sum_step, | |
2571 | int global_counter_fd, | |
2572 | int nr_counter_cpu_fds, | |
2573 | const int *counter_cpu_fds, | |
2574 | enum ustctl_counter_bitness bitness, | |
2575 | enum ustctl_counter_arithmetic arithmetic, | |
81bc4972 MD |
2576 | uint32_t alloc_flags, |
2577 | bool coalesce_hits) | |
ebabbf58 MD |
2578 | { |
2579 | const char *transport_name; | |
2580 | struct ustctl_daemon_counter *counter; | |
2581 | struct lttng_counter_transport *transport; | |
2582 | struct lttng_counter_dimension ust_dim[LTTNG_COUNTER_DIMENSION_MAX]; | |
2583 | size_t i; | |
2584 | ||
2585 | if (nr_dimensions > LTTNG_COUNTER_DIMENSION_MAX) | |
2586 | return NULL; | |
2587 | /* Currently, only per-cpu allocation is supported. */ | |
2588 | switch (alloc_flags) { | |
2589 | case USTCTL_COUNTER_ALLOC_PER_CPU: | |
2590 | break; | |
2591 | ||
2592 | case USTCTL_COUNTER_ALLOC_PER_CPU | USTCTL_COUNTER_ALLOC_GLOBAL: | |
2593 | case USTCTL_COUNTER_ALLOC_GLOBAL: | |
2594 | default: | |
2595 | return NULL; | |
2596 | } | |
2597 | switch (bitness) { | |
2598 | case USTCTL_COUNTER_BITNESS_32: | |
2599 | switch (arithmetic) { | |
2600 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2601 | transport_name = "counter-per-cpu-32-modular"; | |
2602 | break; | |
2603 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2604 | transport_name = "counter-per-cpu-32-saturation"; | |
2605 | break; | |
2606 | default: | |
2607 | return NULL; | |
2608 | } | |
2609 | break; | |
2610 | case USTCTL_COUNTER_BITNESS_64: | |
2611 | switch (arithmetic) { | |
2612 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2613 | transport_name = "counter-per-cpu-64-modular"; | |
2614 | break; | |
2615 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2616 | transport_name = "counter-per-cpu-64-saturation"; | |
2617 | break; | |
2618 | default: | |
2619 | return NULL; | |
2620 | } | |
2621 | break; | |
2622 | default: | |
2623 | return NULL; | |
2624 | } | |
2625 | ||
2626 | transport = lttng_counter_transport_find(transport_name); | |
2627 | if (!transport) { | |
2628 | DBG("LTTng transport %s not found\n", | |
2629 | transport_name); | |
2630 | return NULL; | |
2631 | } | |
2632 | ||
2633 | counter = zmalloc(sizeof(*counter)); | |
2634 | if (!counter) | |
2635 | return NULL; | |
2636 | counter->attr = zmalloc(sizeof(*counter->attr)); | |
2637 | if (!counter->attr) | |
2638 | goto free_counter; | |
2639 | counter->attr->bitness = bitness; | |
2640 | counter->attr->arithmetic = arithmetic; | |
2641 | counter->attr->nr_dimensions = nr_dimensions; | |
2642 | counter->attr->global_sum_step = global_sum_step; | |
81bc4972 | 2643 | counter->attr->coalesce_hits = coalesce_hits; |
ebabbf58 MD |
2644 | for (i = 0; i < nr_dimensions; i++) |
2645 | counter->attr->dimensions[i] = dimensions[i]; | |
2646 | ||
2647 | for (i = 0; i < nr_dimensions; i++) { | |
2648 | ust_dim[i].size = dimensions[i].size; | |
2649 | ust_dim[i].underflow_index = dimensions[i].underflow_index; | |
2650 | ust_dim[i].overflow_index = dimensions[i].overflow_index; | |
2651 | ust_dim[i].has_underflow = dimensions[i].has_underflow; | |
2652 | ust_dim[i].has_overflow = dimensions[i].has_overflow; | |
2653 | } | |
2654 | counter->counter = transport->ops.counter_create(nr_dimensions, | |
2655 | ust_dim, global_sum_step, global_counter_fd, | |
2656 | nr_counter_cpu_fds, counter_cpu_fds, true); | |
2657 | if (!counter->counter) | |
2658 | goto free_attr; | |
2659 | counter->ops = &transport->ops; | |
2660 | return counter; | |
2661 | ||
2662 | free_attr: | |
2663 | free(counter->attr); | |
2664 | free_counter: | |
2665 | free(counter); | |
2666 | return NULL; | |
2667 | } | |
2668 | ||
2669 | int ustctl_create_counter_data(struct ustctl_daemon_counter *counter, | |
fd17d7ce | 2670 | struct lttng_ust_abi_object_data **_counter_data) |
ebabbf58 | 2671 | { |
fd17d7ce MD |
2672 | struct lttng_ust_abi_object_data *counter_data; |
2673 | struct lttng_ust_abi_counter_conf counter_conf = {0}; | |
ebabbf58 MD |
2674 | size_t i; |
2675 | int ret; | |
2676 | ||
2677 | switch (counter->attr->arithmetic) { | |
2678 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
fd17d7ce | 2679 | counter_conf.arithmetic = LTTNG_UST_ABI_COUNTER_ARITHMETIC_MODULAR; |
ebabbf58 MD |
2680 | break; |
2681 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
fd17d7ce | 2682 | counter_conf.arithmetic = LTTNG_UST_ABI_COUNTER_ARITHMETIC_SATURATION; |
ebabbf58 MD |
2683 | break; |
2684 | default: | |
2685 | return -EINVAL; | |
2686 | } | |
2687 | switch (counter->attr->bitness) { | |
2688 | case USTCTL_COUNTER_BITNESS_32: | |
fd17d7ce | 2689 | counter_conf.bitness = LTTNG_UST_ABI_COUNTER_BITNESS_32; |
ebabbf58 MD |
2690 | break; |
2691 | case USTCTL_COUNTER_BITNESS_64: | |
fd17d7ce | 2692 | counter_conf.bitness = LTTNG_UST_ABI_COUNTER_BITNESS_64; |
ebabbf58 MD |
2693 | break; |
2694 | default: | |
2695 | return -EINVAL; | |
2696 | } | |
2697 | counter_conf.number_dimensions = counter->attr->nr_dimensions; | |
2698 | counter_conf.global_sum_step = counter->attr->global_sum_step; | |
81bc4972 | 2699 | counter_conf.coalesce_hits = counter->attr->coalesce_hits; |
ebabbf58 MD |
2700 | for (i = 0; i < counter->attr->nr_dimensions; i++) { |
2701 | counter_conf.dimensions[i].size = counter->attr->dimensions[i].size; | |
2702 | counter_conf.dimensions[i].underflow_index = counter->attr->dimensions[i].underflow_index; | |
2703 | counter_conf.dimensions[i].overflow_index = counter->attr->dimensions[i].overflow_index; | |
2704 | counter_conf.dimensions[i].has_underflow = counter->attr->dimensions[i].has_underflow; | |
2705 | counter_conf.dimensions[i].has_overflow = counter->attr->dimensions[i].has_overflow; | |
2706 | } | |
2707 | ||
2708 | counter_data = zmalloc(sizeof(*counter_data)); | |
2709 | if (!counter_data) { | |
2710 | ret = -ENOMEM; | |
2711 | goto error_alloc; | |
2712 | } | |
fd17d7ce | 2713 | counter_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER; |
ebabbf58 MD |
2714 | counter_data->handle = -1; |
2715 | ||
2716 | counter_data->size = sizeof(counter_conf); | |
2717 | counter_data->u.counter.data = zmalloc(sizeof(counter_conf)); | |
2718 | if (!counter_data->u.counter.data) { | |
2719 | ret = -ENOMEM; | |
2720 | goto error_alloc_data; | |
2721 | } | |
2722 | ||
2723 | memcpy(counter_data->u.counter.data, &counter_conf, sizeof(counter_conf)); | |
2724 | *_counter_data = counter_data; | |
2725 | ||
2726 | return 0; | |
2727 | ||
2728 | error_alloc_data: | |
2729 | free(counter_data); | |
2730 | error_alloc: | |
2731 | return ret; | |
2732 | } | |
2733 | ||
2734 | int ustctl_create_counter_global_data(struct ustctl_daemon_counter *counter, | |
fd17d7ce | 2735 | struct lttng_ust_abi_object_data **_counter_global_data) |
ebabbf58 | 2736 | { |
fd17d7ce | 2737 | struct lttng_ust_abi_object_data *counter_global_data; |
ebabbf58 MD |
2738 | int ret, fd; |
2739 | size_t len; | |
2740 | ||
2741 | if (lttng_counter_get_global_shm(counter->counter, &fd, &len)) | |
2742 | return -EINVAL; | |
2743 | counter_global_data = zmalloc(sizeof(*counter_global_data)); | |
2744 | if (!counter_global_data) { | |
2745 | ret = -ENOMEM; | |
2746 | goto error_alloc; | |
2747 | } | |
fd17d7ce | 2748 | counter_global_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL; |
ebabbf58 MD |
2749 | counter_global_data->handle = -1; |
2750 | counter_global_data->size = len; | |
2751 | counter_global_data->u.counter_global.shm_fd = fd; | |
2752 | *_counter_global_data = counter_global_data; | |
2753 | return 0; | |
2754 | ||
2755 | error_alloc: | |
2756 | return ret; | |
2757 | } | |
2758 | ||
2759 | int ustctl_create_counter_cpu_data(struct ustctl_daemon_counter *counter, int cpu, | |
fd17d7ce | 2760 | struct lttng_ust_abi_object_data **_counter_cpu_data) |
ebabbf58 | 2761 | { |
fd17d7ce | 2762 | struct lttng_ust_abi_object_data *counter_cpu_data; |
ebabbf58 MD |
2763 | int ret, fd; |
2764 | size_t len; | |
2765 | ||
2766 | if (lttng_counter_get_cpu_shm(counter->counter, cpu, &fd, &len)) | |
2767 | return -EINVAL; | |
2768 | counter_cpu_data = zmalloc(sizeof(*counter_cpu_data)); | |
2769 | if (!counter_cpu_data) { | |
2770 | ret = -ENOMEM; | |
2771 | goto error_alloc; | |
2772 | } | |
fd17d7ce | 2773 | counter_cpu_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU; |
ebabbf58 MD |
2774 | counter_cpu_data->handle = -1; |
2775 | counter_cpu_data->size = len; | |
2776 | counter_cpu_data->u.counter_cpu.shm_fd = fd; | |
2777 | counter_cpu_data->u.counter_cpu.cpu_nr = cpu; | |
2778 | *_counter_cpu_data = counter_cpu_data; | |
2779 | return 0; | |
2780 | ||
2781 | error_alloc: | |
2782 | return ret; | |
2783 | } | |
2784 | ||
2785 | void ustctl_destroy_counter(struct ustctl_daemon_counter *counter) | |
2786 | { | |
2787 | counter->ops->counter_destroy(counter->counter); | |
2788 | free(counter->attr); | |
2789 | free(counter); | |
2790 | } | |
2791 | ||
2792 | int ustctl_send_counter_data_to_ust(int sock, int parent_handle, | |
fd17d7ce | 2793 | struct lttng_ust_abi_object_data *counter_data) |
ebabbf58 MD |
2794 | { |
2795 | struct ustcomm_ust_msg lum; | |
2796 | struct ustcomm_ust_reply lur; | |
2797 | int ret; | |
2798 | size_t size; | |
2799 | ssize_t len; | |
2800 | ||
2801 | if (!counter_data) | |
2802 | return -EINVAL; | |
2803 | ||
2804 | size = counter_data->size; | |
2805 | memset(&lum, 0, sizeof(lum)); | |
2806 | lum.handle = parent_handle; | |
fd17d7ce | 2807 | lum.cmd = LTTNG_UST_ABI_COUNTER; |
ebabbf58 MD |
2808 | lum.u.counter.len = size; |
2809 | ret = ustcomm_send_app_msg(sock, &lum); | |
2810 | if (ret) | |
2811 | return ret; | |
2812 | ||
2813 | /* Send counter data */ | |
2814 | len = ustcomm_send_unix_sock(sock, counter_data->u.counter.data, size); | |
2815 | if (len != size) { | |
2816 | if (len < 0) | |
2817 | return len; | |
2818 | else | |
2819 | return -EIO; | |
2820 | } | |
2821 | ||
2822 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2823 | if (!ret) { | |
2824 | counter_data->handle = lur.ret_val; | |
2825 | } | |
2826 | return ret; | |
2827 | } | |
2828 | ||
2829 | int ustctl_send_counter_global_data_to_ust(int sock, | |
fd17d7ce MD |
2830 | struct lttng_ust_abi_object_data *counter_data, |
2831 | struct lttng_ust_abi_object_data *counter_global_data) | |
ebabbf58 MD |
2832 | { |
2833 | struct ustcomm_ust_msg lum; | |
2834 | struct ustcomm_ust_reply lur; | |
2835 | int ret, shm_fd[1]; | |
2836 | size_t size; | |
2837 | ssize_t len; | |
2838 | ||
2839 | if (!counter_data || !counter_global_data) | |
2840 | return -EINVAL; | |
2841 | ||
2842 | size = counter_global_data->size; | |
2843 | memset(&lum, 0, sizeof(lum)); | |
2844 | lum.handle = counter_data->handle; /* parent handle */ | |
fd17d7ce | 2845 | lum.cmd = LTTNG_UST_ABI_COUNTER_GLOBAL; |
ebabbf58 MD |
2846 | lum.u.counter_global.len = size; |
2847 | ret = ustcomm_send_app_msg(sock, &lum); | |
2848 | if (ret) | |
2849 | return ret; | |
2850 | ||
2851 | shm_fd[0] = counter_global_data->u.counter_global.shm_fd; | |
2852 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
2853 | if (len <= 0) { | |
2854 | if (len < 0) | |
2855 | return len; | |
2856 | else | |
2857 | return -EIO; | |
2858 | } | |
2859 | ||
2860 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2861 | if (!ret) { | |
2862 | counter_global_data->handle = lur.ret_val; | |
2863 | } | |
2864 | return ret; | |
2865 | } | |
2866 | ||
2867 | int ustctl_send_counter_cpu_data_to_ust(int sock, | |
fd17d7ce MD |
2868 | struct lttng_ust_abi_object_data *counter_data, |
2869 | struct lttng_ust_abi_object_data *counter_cpu_data) | |
ebabbf58 MD |
2870 | { |
2871 | struct ustcomm_ust_msg lum; | |
2872 | struct ustcomm_ust_reply lur; | |
2873 | int ret, shm_fd[1]; | |
2874 | size_t size; | |
2875 | ssize_t len; | |
2876 | ||
2877 | if (!counter_data || !counter_cpu_data) | |
2878 | return -EINVAL; | |
2879 | ||
2880 | size = counter_cpu_data->size; | |
2881 | memset(&lum, 0, sizeof(lum)); | |
2882 | lum.handle = counter_data->handle; /* parent handle */ | |
fd17d7ce | 2883 | lum.cmd = LTTNG_UST_ABI_COUNTER_CPU; |
ebabbf58 MD |
2884 | lum.u.counter_cpu.len = size; |
2885 | lum.u.counter_cpu.cpu_nr = counter_cpu_data->u.counter_cpu.cpu_nr; | |
2886 | ret = ustcomm_send_app_msg(sock, &lum); | |
2887 | if (ret) | |
2888 | return ret; | |
2889 | ||
2890 | shm_fd[0] = counter_cpu_data->u.counter_global.shm_fd; | |
2891 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
2892 | if (len <= 0) { | |
2893 | if (len < 0) | |
2894 | return len; | |
2895 | else | |
2896 | return -EIO; | |
2897 | } | |
2898 | ||
2899 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2900 | if (!ret) { | |
2901 | counter_cpu_data->handle = lur.ret_val; | |
2902 | } | |
2903 | return ret; | |
2904 | } | |
2905 | ||
2906 | int ustctl_counter_read(struct ustctl_daemon_counter *counter, | |
2907 | const size_t *dimension_indexes, | |
2908 | int cpu, int64_t *value, | |
2909 | bool *overflow, bool *underflow) | |
2910 | { | |
2911 | return counter->ops->counter_read(counter->counter, dimension_indexes, cpu, | |
2912 | value, overflow, underflow); | |
2913 | } | |
2914 | ||
2915 | int ustctl_counter_aggregate(struct ustctl_daemon_counter *counter, | |
2916 | const size_t *dimension_indexes, | |
2917 | int64_t *value, | |
2918 | bool *overflow, bool *underflow) | |
2919 | { | |
2920 | return counter->ops->counter_aggregate(counter->counter, dimension_indexes, | |
2921 | value, overflow, underflow); | |
2922 | } | |
2923 | ||
2924 | int ustctl_counter_clear(struct ustctl_daemon_counter *counter, | |
2925 | const size_t *dimension_indexes) | |
2926 | { | |
2927 | return counter->ops->counter_clear(counter->counter, dimension_indexes); | |
2928 | } | |
2929 | ||
74d81a6c MD |
2930 | static __attribute__((constructor)) |
2931 | void ustctl_init(void) | |
2932 | { | |
2b6f4374 MJ |
2933 | ust_err_init(); |
2934 | lttng_ust_getenv_init(); /* Needs ust_err_init() to be completed. */ | |
f9364363 | 2935 | lttng_ust_clock_init(); |
74d81a6c MD |
2936 | lttng_ring_buffer_metadata_client_init(); |
2937 | lttng_ring_buffer_client_overwrite_init(); | |
34a91bdb | 2938 | lttng_ring_buffer_client_overwrite_rt_init(); |
74d81a6c | 2939 | lttng_ring_buffer_client_discard_init(); |
34a91bdb | 2940 | lttng_ring_buffer_client_discard_rt_init(); |
ebabbf58 MD |
2941 | lttng_counter_client_percpu_32_modular_init(); |
2942 | lttng_counter_client_percpu_64_modular_init(); | |
03d2d293 | 2943 | lib_ringbuffer_signal_init(); |
74d81a6c MD |
2944 | } |
2945 | ||
2946 | static __attribute__((destructor)) | |
2947 | void ustctl_exit(void) | |
2948 | { | |
34a91bdb | 2949 | lttng_ring_buffer_client_discard_rt_exit(); |
74d81a6c | 2950 | lttng_ring_buffer_client_discard_exit(); |
34a91bdb | 2951 | lttng_ring_buffer_client_overwrite_rt_exit(); |
74d81a6c MD |
2952 | lttng_ring_buffer_client_overwrite_exit(); |
2953 | lttng_ring_buffer_metadata_client_exit(); | |
ebabbf58 MD |
2954 | lttng_counter_client_percpu_32_modular_exit(); |
2955 | lttng_counter_client_percpu_64_modular_exit(); | |
57773204 | 2956 | } |