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); |
31677417 | 97 | LTTNG_HIDDEN |
ebabbf58 | 98 | extern void lttng_counter_client_percpu_32_modular_init(void); |
31677417 | 99 | LTTNG_HIDDEN |
ebabbf58 | 100 | extern void lttng_counter_client_percpu_32_modular_exit(void); |
31677417 | 101 | LTTNG_HIDDEN |
ebabbf58 | 102 | extern void lttng_counter_client_percpu_64_modular_init(void); |
31677417 | 103 | LTTNG_HIDDEN |
ebabbf58 | 104 | extern void lttng_counter_client_percpu_64_modular_exit(void); |
74d81a6c | 105 | |
2be0e72c MD |
106 | int ustctl_release_handle(int sock, int handle) |
107 | { | |
108 | struct ustcomm_ust_msg lum; | |
109 | struct ustcomm_ust_reply lur; | |
2be0e72c | 110 | |
74d81a6c MD |
111 | if (sock < 0 || handle < 0) |
112 | return 0; | |
113 | memset(&lum, 0, sizeof(lum)); | |
114 | lum.handle = handle; | |
fd17d7ce | 115 | lum.cmd = LTTNG_UST_ABI_RELEASE; |
74d81a6c | 116 | return ustcomm_send_app_cmd(sock, &lum, &lur); |
2be0e72c | 117 | } |
74d81a6c | 118 | |
12388166 MD |
119 | /* |
120 | * If sock is negative, it means we don't have to notify the other side | |
121 | * (e.g. application has already vanished). | |
122 | */ | |
fd17d7ce | 123 | int ustctl_release_object(int sock, struct lttng_ust_abi_object_data *data) |
57773204 | 124 | { |
57773204 MD |
125 | int ret; |
126 | ||
9bfc503d MD |
127 | if (!data) |
128 | return -EINVAL; | |
129 | ||
74d81a6c | 130 | switch (data->type) { |
fd17d7ce | 131 | case LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL: |
ff0f5728 MD |
132 | if (data->u.channel.wakeup_fd >= 0) { |
133 | ret = close(data->u.channel.wakeup_fd); | |
134 | if (ret < 0) { | |
135 | ret = -errno; | |
136 | return ret; | |
137 | } | |
dd6c697c | 138 | data->u.channel.wakeup_fd = -1; |
ff0f5728 | 139 | } |
74d81a6c | 140 | free(data->u.channel.data); |
dd6c697c | 141 | data->u.channel.data = NULL; |
74d81a6c | 142 | break; |
fd17d7ce | 143 | case LTTNG_UST_ABI_OBJECT_TYPE_STREAM: |
74d81a6c MD |
144 | if (data->u.stream.shm_fd >= 0) { |
145 | ret = close(data->u.stream.shm_fd); | |
146 | if (ret < 0) { | |
147 | ret = -errno; | |
148 | return ret; | |
149 | } | |
dd6c697c | 150 | data->u.stream.shm_fd = -1; |
d26228ae | 151 | } |
74d81a6c MD |
152 | if (data->u.stream.wakeup_fd >= 0) { |
153 | ret = close(data->u.stream.wakeup_fd); | |
154 | if (ret < 0) { | |
155 | ret = -errno; | |
156 | return ret; | |
157 | } | |
dd6c697c | 158 | data->u.stream.wakeup_fd = -1; |
d26228ae | 159 | } |
74d81a6c | 160 | break; |
fd17d7ce MD |
161 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT: |
162 | case LTTNG_UST_ABI_OBJECT_TYPE_CONTEXT: | |
163 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER_GROUP: | |
164 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER: | |
32ce8569 | 165 | break; |
fd17d7ce | 166 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER: |
ebabbf58 MD |
167 | free(data->u.counter.data); |
168 | data->u.counter.data = NULL; | |
169 | break; | |
fd17d7ce | 170 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL: |
ebabbf58 MD |
171 | if (data->u.counter_global.shm_fd >= 0) { |
172 | ret = close(data->u.counter_global.shm_fd); | |
173 | if (ret < 0) { | |
174 | ret = -errno; | |
175 | return ret; | |
176 | } | |
177 | data->u.counter_global.shm_fd = -1; | |
178 | } | |
179 | break; | |
fd17d7ce | 180 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU: |
ebabbf58 MD |
181 | if (data->u.counter_cpu.shm_fd >= 0) { |
182 | ret = close(data->u.counter_cpu.shm_fd); | |
183 | if (ret < 0) { | |
184 | ret = -errno; | |
185 | return ret; | |
186 | } | |
187 | data->u.counter_cpu.shm_fd = -1; | |
188 | } | |
189 | break; | |
74d81a6c MD |
190 | default: |
191 | assert(0); | |
d26228ae | 192 | } |
2be0e72c | 193 | return ustctl_release_handle(sock, data->handle); |
57773204 MD |
194 | } |
195 | ||
1c5e467e MD |
196 | /* |
197 | * Send registration done packet to the application. | |
198 | */ | |
199 | int ustctl_register_done(int sock) | |
200 | { | |
201 | struct ustcomm_ust_msg lum; | |
202 | struct ustcomm_ust_reply lur; | |
203 | int ret; | |
204 | ||
205 | DBG("Sending register done command to %d", sock); | |
206 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
207 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
208 | lum.cmd = LTTNG_UST_ABI_REGISTER_DONE; | |
1c5e467e MD |
209 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
210 | if (ret) | |
211 | return ret; | |
1c5e467e | 212 | return 0; |
1c5e467e MD |
213 | } |
214 | ||
57773204 MD |
215 | /* |
216 | * returns session handle. | |
217 | */ | |
218 | int ustctl_create_session(int sock) | |
219 | { | |
220 | struct ustcomm_ust_msg lum; | |
221 | struct ustcomm_ust_reply lur; | |
222 | int ret, session_handle; | |
223 | ||
224 | /* Create session */ | |
225 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
226 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
227 | lum.cmd = LTTNG_UST_ABI_SESSION; | |
57773204 MD |
228 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
229 | if (ret) | |
230 | return ret; | |
231 | session_handle = lur.ret_val; | |
232 | DBG("received session handle %u", session_handle); | |
233 | return session_handle; | |
234 | } | |
235 | ||
fd17d7ce MD |
236 | int ustctl_create_event(int sock, struct lttng_ust_abi_event *ev, |
237 | struct lttng_ust_abi_object_data *channel_data, | |
238 | struct lttng_ust_abi_object_data **_event_data) | |
57773204 MD |
239 | { |
240 | struct ustcomm_ust_msg lum; | |
241 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 242 | struct lttng_ust_abi_object_data *event_data; |
57773204 MD |
243 | int ret; |
244 | ||
9bfc503d MD |
245 | if (!channel_data || !_event_data) |
246 | return -EINVAL; | |
247 | ||
74d81a6c | 248 | event_data = zmalloc(sizeof(*event_data)); |
57773204 MD |
249 | if (!event_data) |
250 | return -ENOMEM; | |
fd17d7ce | 251 | event_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT; |
57773204 MD |
252 | memset(&lum, 0, sizeof(lum)); |
253 | lum.handle = channel_data->handle; | |
fd17d7ce | 254 | lum.cmd = LTTNG_UST_ABI_EVENT; |
57773204 | 255 | strncpy(lum.u.event.name, ev->name, |
fd17d7ce | 256 | LTTNG_UST_ABI_SYM_NAME_LEN); |
57773204 | 257 | lum.u.event.instrumentation = ev->instrumentation; |
457a6b58 MD |
258 | lum.u.event.loglevel_type = ev->loglevel_type; |
259 | lum.u.event.loglevel = ev->loglevel; | |
57773204 MD |
260 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
261 | if (ret) { | |
262 | free(event_data); | |
263 | return ret; | |
264 | } | |
265 | event_data->handle = lur.ret_val; | |
266 | DBG("received event handle %u", event_data->handle); | |
267 | *_event_data = event_data; | |
268 | return 0; | |
269 | } | |
270 | ||
53f0df51 | 271 | int ustctl_add_context(int sock, struct lttng_ust_context_attr *ctx, |
fd17d7ce MD |
272 | struct lttng_ust_abi_object_data *obj_data, |
273 | struct lttng_ust_abi_object_data **_context_data) | |
57773204 MD |
274 | { |
275 | struct ustcomm_ust_msg lum; | |
276 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 277 | struct lttng_ust_abi_object_data *context_data = NULL; |
53f0df51 JG |
278 | char *buf = NULL; |
279 | size_t len; | |
57773204 MD |
280 | int ret; |
281 | ||
53f0df51 JG |
282 | if (!obj_data || !_context_data) { |
283 | ret = -EINVAL; | |
284 | goto end; | |
285 | } | |
9bfc503d | 286 | |
74d81a6c | 287 | context_data = zmalloc(sizeof(*context_data)); |
53f0df51 JG |
288 | if (!context_data) { |
289 | ret = -ENOMEM; | |
290 | goto end; | |
291 | } | |
fd17d7ce | 292 | context_data->type = LTTNG_UST_ABI_OBJECT_TYPE_CONTEXT; |
57773204 | 293 | memset(&lum, 0, sizeof(lum)); |
3039d8ed | 294 | lum.handle = obj_data->handle; |
fd17d7ce | 295 | lum.cmd = LTTNG_UST_ABI_CONTEXT; |
53f0df51 JG |
296 | |
297 | lum.u.context.ctx = ctx->ctx; | |
298 | switch (ctx->ctx) { | |
fd17d7ce | 299 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
53f0df51 JG |
300 | lum.u.context.u.perf_counter = ctx->u.perf_counter; |
301 | break; | |
fd17d7ce | 302 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
53f0df51 JG |
303 | { |
304 | size_t provider_name_len = strlen( | |
305 | ctx->u.app_ctx.provider_name) + 1; | |
306 | size_t ctx_name_len = strlen(ctx->u.app_ctx.ctx_name) + 1; | |
307 | ||
308 | lum.u.context.u.app_ctx.provider_name_len = provider_name_len; | |
309 | lum.u.context.u.app_ctx.ctx_name_len = ctx_name_len; | |
310 | ||
311 | len = provider_name_len + ctx_name_len; | |
312 | buf = zmalloc(len); | |
313 | if (!buf) { | |
314 | ret = -ENOMEM; | |
315 | goto end; | |
316 | } | |
317 | memcpy(buf, ctx->u.app_ctx.provider_name, | |
318 | provider_name_len); | |
319 | memcpy(buf + provider_name_len, ctx->u.app_ctx.ctx_name, | |
320 | ctx_name_len); | |
321 | break; | |
322 | } | |
323 | default: | |
324 | break; | |
325 | } | |
326 | ret = ustcomm_send_app_msg(sock, &lum); | |
327 | if (ret) | |
328 | goto end; | |
329 | if (buf) { | |
330 | /* send var len ctx_name */ | |
331 | ret = ustcomm_send_unix_sock(sock, buf, len); | |
332 | if (ret < 0) { | |
333 | goto end; | |
334 | } | |
335 | if (ret != len) { | |
336 | ret = -EINVAL; | |
337 | goto end; | |
338 | } | |
339 | } | |
340 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
341 | if (ret < 0) { | |
342 | goto end; | |
57773204 | 343 | } |
32ce8569 MD |
344 | context_data->handle = -1; |
345 | DBG("Context created successfully"); | |
57773204 | 346 | *_context_data = context_data; |
53f0df51 JG |
347 | context_data = NULL; |
348 | end: | |
349 | free(context_data); | |
350 | free(buf); | |
57773204 MD |
351 | return ret; |
352 | } | |
353 | ||
fd17d7ce MD |
354 | int ustctl_set_filter(int sock, struct lttng_ust_abi_filter_bytecode *bytecode, |
355 | struct lttng_ust_abi_object_data *obj_data) | |
cd54f6d9 MD |
356 | { |
357 | struct ustcomm_ust_msg lum; | |
358 | struct ustcomm_ust_reply lur; | |
359 | int ret; | |
360 | ||
361 | if (!obj_data) | |
362 | return -EINVAL; | |
363 | ||
364 | memset(&lum, 0, sizeof(lum)); | |
365 | lum.handle = obj_data->handle; | |
fd17d7ce | 366 | lum.cmd = LTTNG_UST_ABI_FILTER; |
cd54f6d9 MD |
367 | lum.u.filter.data_size = bytecode->len; |
368 | lum.u.filter.reloc_offset = bytecode->reloc_offset; | |
e695af51 | 369 | lum.u.filter.seqnum = bytecode->seqnum; |
cd54f6d9 MD |
370 | |
371 | ret = ustcomm_send_app_msg(sock, &lum); | |
d37ecb3f FD |
372 | if (ret) |
373 | return ret; | |
374 | /* send var len bytecode */ | |
375 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
376 | bytecode->len); | |
377 | if (ret < 0) { | |
378 | return ret; | |
379 | } | |
380 | if (ret != bytecode->len) | |
381 | return -EINVAL; | |
382 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
383 | } | |
384 | ||
fd17d7ce MD |
385 | int ustctl_set_capture(int sock, struct lttng_ust_abi_capture_bytecode *bytecode, |
386 | struct lttng_ust_abi_object_data *obj_data) | |
d37ecb3f FD |
387 | { |
388 | struct ustcomm_ust_msg lum; | |
389 | struct ustcomm_ust_reply lur; | |
390 | int ret; | |
391 | ||
392 | if (!obj_data) | |
393 | return -EINVAL; | |
394 | ||
395 | memset(&lum, 0, sizeof(lum)); | |
396 | lum.handle = obj_data->handle; | |
fd17d7ce | 397 | lum.cmd = LTTNG_UST_ABI_CAPTURE; |
d37ecb3f FD |
398 | lum.u.capture.data_size = bytecode->len; |
399 | lum.u.capture.reloc_offset = bytecode->reloc_offset; | |
400 | lum.u.capture.seqnum = bytecode->seqnum; | |
401 | ||
402 | ret = ustcomm_send_app_msg(sock, &lum); | |
cd54f6d9 MD |
403 | if (ret) |
404 | return ret; | |
cd54f6d9 MD |
405 | /* send var len bytecode */ |
406 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
407 | bytecode->len); | |
408 | if (ret < 0) { | |
409 | return ret; | |
410 | } | |
7bc53e94 MD |
411 | if (ret != bytecode->len) |
412 | return -EINVAL; | |
413 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
cd54f6d9 MD |
414 | } |
415 | ||
fd17d7ce MD |
416 | int ustctl_set_exclusion(int sock, struct lttng_ust_abi_event_exclusion *exclusion, |
417 | struct lttng_ust_abi_object_data *obj_data) | |
da57c034 JI |
418 | { |
419 | struct ustcomm_ust_msg lum; | |
420 | struct ustcomm_ust_reply lur; | |
421 | int ret; | |
422 | ||
423 | if (!obj_data) { | |
424 | return -EINVAL; | |
425 | } | |
426 | ||
427 | memset(&lum, 0, sizeof(lum)); | |
428 | lum.handle = obj_data->handle; | |
fd17d7ce | 429 | lum.cmd = LTTNG_UST_ABI_EXCLUSION; |
da57c034 JI |
430 | lum.u.exclusion.count = exclusion->count; |
431 | ||
432 | ret = ustcomm_send_app_msg(sock, &lum); | |
433 | if (ret) { | |
434 | return ret; | |
435 | } | |
436 | ||
1628366f | 437 | /* send var len exclusion names */ |
da57c034 JI |
438 | ret = ustcomm_send_unix_sock(sock, |
439 | exclusion->names, | |
fd17d7ce | 440 | exclusion->count * LTTNG_UST_ABI_SYM_NAME_LEN); |
da57c034 JI |
441 | if (ret < 0) { |
442 | return ret; | |
443 | } | |
fd17d7ce | 444 | if (ret != exclusion->count * LTTNG_UST_ABI_SYM_NAME_LEN) { |
da57c034 JI |
445 | return -EINVAL; |
446 | } | |
447 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
448 | } | |
449 | ||
57773204 | 450 | /* Enable event, channel and session ioctl */ |
fd17d7ce | 451 | int ustctl_enable(int sock, struct lttng_ust_abi_object_data *object) |
57773204 MD |
452 | { |
453 | struct ustcomm_ust_msg lum; | |
454 | struct ustcomm_ust_reply lur; | |
455 | int ret; | |
456 | ||
9bfc503d MD |
457 | if (!object) |
458 | return -EINVAL; | |
459 | ||
57773204 MD |
460 | memset(&lum, 0, sizeof(lum)); |
461 | lum.handle = object->handle; | |
fd17d7ce | 462 | lum.cmd = LTTNG_UST_ABI_ENABLE; |
57773204 MD |
463 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
464 | if (ret) | |
465 | return ret; | |
466 | DBG("enabled handle %u", object->handle); | |
467 | return 0; | |
468 | } | |
469 | ||
470 | /* Disable event, channel and session ioctl */ | |
fd17d7ce | 471 | int ustctl_disable(int sock, struct lttng_ust_abi_object_data *object) |
57773204 MD |
472 | { |
473 | struct ustcomm_ust_msg lum; | |
474 | struct ustcomm_ust_reply lur; | |
475 | int ret; | |
476 | ||
9bfc503d MD |
477 | if (!object) |
478 | return -EINVAL; | |
479 | ||
57773204 MD |
480 | memset(&lum, 0, sizeof(lum)); |
481 | lum.handle = object->handle; | |
fd17d7ce | 482 | lum.cmd = LTTNG_UST_ABI_DISABLE; |
57773204 MD |
483 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
484 | if (ret) | |
485 | return ret; | |
486 | DBG("disable handle %u", object->handle); | |
487 | return 0; | |
488 | } | |
489 | ||
4a6ca058 | 490 | int ustctl_start_session(int sock, int handle) |
57773204 | 491 | { |
fd17d7ce | 492 | struct lttng_ust_abi_object_data obj; |
4a6ca058 MD |
493 | |
494 | obj.handle = handle; | |
495 | return ustctl_enable(sock, &obj); | |
57773204 MD |
496 | } |
497 | ||
4a6ca058 | 498 | int ustctl_stop_session(int sock, int handle) |
57773204 | 499 | { |
fd17d7ce | 500 | struct lttng_ust_abi_object_data obj; |
4a6ca058 MD |
501 | |
502 | obj.handle = handle; | |
503 | return ustctl_disable(sock, &obj); | |
57773204 MD |
504 | } |
505 | ||
d8d2416d | 506 | int ustctl_create_event_notifier_group(int sock, int pipe_fd, |
fd17d7ce | 507 | struct lttng_ust_abi_object_data **_event_notifier_group_data) |
d8d2416d | 508 | { |
fd17d7ce | 509 | struct lttng_ust_abi_object_data *event_notifier_group_data; |
d8d2416d FD |
510 | struct ustcomm_ust_msg lum; |
511 | struct ustcomm_ust_reply lur; | |
512 | ssize_t len; | |
513 | int ret; | |
514 | ||
515 | if (!_event_notifier_group_data) | |
516 | return -EINVAL; | |
517 | ||
518 | event_notifier_group_data = zmalloc(sizeof(*event_notifier_group_data)); | |
519 | if (!event_notifier_group_data) | |
520 | return -ENOMEM; | |
521 | ||
fd17d7ce | 522 | event_notifier_group_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER_GROUP; |
d8d2416d FD |
523 | |
524 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
525 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
526 | lum.cmd = LTTNG_UST_ABI_EVENT_NOTIFIER_GROUP_CREATE; | |
d8d2416d FD |
527 | |
528 | ret = ustcomm_send_app_msg(sock, &lum); | |
529 | if (ret) | |
530 | goto error; | |
531 | ||
532 | /* Send event_notifier notification pipe. */ | |
533 | len = ustcomm_send_fds_unix_sock(sock, &pipe_fd, 1); | |
534 | if (len <= 0) { | |
535 | ret = len; | |
536 | goto error; | |
537 | } | |
538 | ||
539 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
540 | if (ret) | |
541 | goto error; | |
542 | ||
543 | event_notifier_group_data->handle = lur.ret_val; | |
544 | DBG("received event_notifier group handle %d", event_notifier_group_data->handle); | |
545 | ||
546 | *_event_notifier_group_data = event_notifier_group_data; | |
547 | ||
548 | ret = 0; | |
549 | goto end; | |
550 | error: | |
551 | free(event_notifier_group_data); | |
552 | ||
553 | end: | |
554 | return ret; | |
555 | } | |
556 | ||
fd17d7ce MD |
557 | int ustctl_create_event_notifier(int sock, struct lttng_ust_abi_event_notifier *event_notifier, |
558 | struct lttng_ust_abi_object_data *event_notifier_group, | |
559 | struct lttng_ust_abi_object_data **_event_notifier_data) | |
d8d2416d FD |
560 | { |
561 | struct ustcomm_ust_msg lum; | |
562 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 563 | struct lttng_ust_abi_object_data *event_notifier_data; |
8406222c | 564 | ssize_t len; |
d8d2416d FD |
565 | int ret; |
566 | ||
567 | if (!event_notifier_group || !_event_notifier_data) | |
568 | return -EINVAL; | |
569 | ||
570 | event_notifier_data = zmalloc(sizeof(*event_notifier_data)); | |
571 | if (!event_notifier_data) | |
572 | return -ENOMEM; | |
573 | ||
fd17d7ce | 574 | event_notifier_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER; |
d8d2416d FD |
575 | |
576 | memset(&lum, 0, sizeof(lum)); | |
577 | lum.handle = event_notifier_group->handle; | |
fd17d7ce | 578 | lum.cmd = LTTNG_UST_ABI_EVENT_NOTIFIER_CREATE; |
8406222c | 579 | lum.u.event_notifier.len = sizeof(*event_notifier); |
d8d2416d | 580 | |
41844673 | 581 | ret = ustcomm_send_app_msg(sock, &lum); |
d8d2416d FD |
582 | if (ret) { |
583 | free(event_notifier_data); | |
584 | return ret; | |
585 | } | |
8406222c MD |
586 | /* Send struct lttng_ust_event_notifier */ |
587 | len = ustcomm_send_unix_sock(sock, event_notifier, sizeof(*event_notifier)); | |
588 | if (len != sizeof(*event_notifier)) { | |
589 | if (len < 0) | |
590 | return len; | |
591 | else | |
592 | return -EIO; | |
593 | } | |
41844673 MD |
594 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); |
595 | if (ret) { | |
596 | free(event_notifier_data); | |
597 | return ret; | |
598 | } | |
d8d2416d FD |
599 | event_notifier_data->handle = lur.ret_val; |
600 | DBG("received event_notifier handle %u", event_notifier_data->handle); | |
601 | *_event_notifier_data = event_notifier_data; | |
602 | ||
603 | return ret; | |
604 | } | |
605 | ||
57773204 MD |
606 | int ustctl_tracepoint_list(int sock) |
607 | { | |
b115631f MD |
608 | struct ustcomm_ust_msg lum; |
609 | struct ustcomm_ust_reply lur; | |
610 | int ret, tp_list_handle; | |
611 | ||
612 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
613 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
614 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_LIST; | |
b115631f MD |
615 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
616 | if (ret) | |
617 | return ret; | |
618 | tp_list_handle = lur.ret_val; | |
619 | DBG("received tracepoint list handle %u", tp_list_handle); | |
620 | return tp_list_handle; | |
621 | } | |
622 | ||
623 | int ustctl_tracepoint_list_get(int sock, int tp_list_handle, | |
fd17d7ce | 624 | struct lttng_ust_abi_tracepoint_iter *iter) |
b115631f MD |
625 | { |
626 | struct ustcomm_ust_msg lum; | |
627 | struct ustcomm_ust_reply lur; | |
628 | int ret; | |
629 | ||
9bfc503d MD |
630 | if (!iter) |
631 | return -EINVAL; | |
632 | ||
b115631f MD |
633 | memset(&lum, 0, sizeof(lum)); |
634 | lum.handle = tp_list_handle; | |
fd17d7ce | 635 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_LIST_GET; |
b115631f MD |
636 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
637 | if (ret) | |
638 | return ret; | |
882a56d7 | 639 | DBG("received tracepoint list entry name %s loglevel %d", |
cbef6901 | 640 | lur.u.tracepoint.name, |
882a56d7 | 641 | lur.u.tracepoint.loglevel); |
cbef6901 | 642 | memcpy(iter, &lur.u.tracepoint, sizeof(*iter)); |
b115631f | 643 | return 0; |
57773204 MD |
644 | } |
645 | ||
40003310 MD |
646 | int ustctl_tracepoint_field_list(int sock) |
647 | { | |
648 | struct ustcomm_ust_msg lum; | |
649 | struct ustcomm_ust_reply lur; | |
650 | int ret, tp_field_list_handle; | |
651 | ||
652 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
653 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
654 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_FIELD_LIST; | |
40003310 MD |
655 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
656 | if (ret) | |
657 | return ret; | |
658 | tp_field_list_handle = lur.ret_val; | |
659 | DBG("received tracepoint field list handle %u", tp_field_list_handle); | |
660 | return tp_field_list_handle; | |
661 | } | |
662 | ||
663 | int ustctl_tracepoint_field_list_get(int sock, int tp_field_list_handle, | |
fd17d7ce | 664 | struct lttng_ust_abi_field_iter *iter) |
40003310 MD |
665 | { |
666 | struct ustcomm_ust_msg lum; | |
667 | struct ustcomm_ust_reply lur; | |
668 | int ret; | |
669 | ssize_t len; | |
670 | ||
671 | if (!iter) | |
672 | return -EINVAL; | |
673 | ||
674 | memset(&lum, 0, sizeof(lum)); | |
675 | lum.handle = tp_field_list_handle; | |
fd17d7ce | 676 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_FIELD_LIST_GET; |
40003310 MD |
677 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
678 | if (ret) | |
679 | return ret; | |
680 | len = ustcomm_recv_unix_sock(sock, iter, sizeof(*iter)); | |
681 | if (len != sizeof(*iter)) { | |
682 | return -EINVAL; | |
683 | } | |
684 | DBG("received tracepoint field list entry event_name %s event_loglevel %d field_name %s field_type %d", | |
685 | iter->event_name, | |
686 | iter->loglevel, | |
687 | iter->field_name, | |
688 | iter->type); | |
689 | return 0; | |
690 | } | |
691 | ||
fd17d7ce | 692 | int ustctl_tracer_version(int sock, struct lttng_ust_abi_tracer_version *v) |
57773204 MD |
693 | { |
694 | struct ustcomm_ust_msg lum; | |
695 | struct ustcomm_ust_reply lur; | |
696 | int ret; | |
697 | ||
9bfc503d MD |
698 | if (!v) |
699 | return -EINVAL; | |
700 | ||
57773204 | 701 | memset(&lum, 0, sizeof(lum)); |
fd17d7ce MD |
702 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
703 | lum.cmd = LTTNG_UST_ABI_TRACER_VERSION; | |
57773204 MD |
704 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
705 | if (ret) | |
706 | return ret; | |
707 | memcpy(v, &lur.u.version, sizeof(*v)); | |
708 | DBG("received tracer version"); | |
709 | return 0; | |
710 | } | |
711 | ||
712 | int ustctl_wait_quiescent(int sock) | |
713 | { | |
714 | struct ustcomm_ust_msg lum; | |
715 | struct ustcomm_ust_reply lur; | |
716 | int ret; | |
717 | ||
718 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
719 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
720 | lum.cmd = LTTNG_UST_ABI_WAIT_QUIESCENT; | |
57773204 MD |
721 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
722 | if (ret) | |
723 | return ret; | |
724 | DBG("waited for quiescent state"); | |
725 | return 0; | |
726 | } | |
727 | ||
fd17d7ce | 728 | int ustctl_calibrate(int sock, struct lttng_ust_abi_calibrate *calibrate) |
57773204 | 729 | { |
9bfc503d MD |
730 | if (!calibrate) |
731 | return -EINVAL; | |
732 | ||
57773204 MD |
733 | return -ENOSYS; |
734 | } | |
735 | ||
fd17d7ce | 736 | int ustctl_sock_flush_buffer(int sock, struct lttng_ust_abi_object_data *object) |
f1fffc57 MD |
737 | { |
738 | struct ustcomm_ust_msg lum; | |
739 | struct ustcomm_ust_reply lur; | |
740 | int ret; | |
741 | ||
9bfc503d MD |
742 | if (!object) |
743 | return -EINVAL; | |
744 | ||
f1fffc57 MD |
745 | memset(&lum, 0, sizeof(lum)); |
746 | lum.handle = object->handle; | |
fd17d7ce | 747 | lum.cmd = LTTNG_UST_ABI_FLUSH_BUFFER; |
f1fffc57 MD |
748 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
749 | if (ret) | |
750 | return ret; | |
751 | DBG("flushed buffer handle %u", object->handle); | |
752 | return 0; | |
753 | } | |
754 | ||
74d81a6c MD |
755 | static |
756 | int ustctl_send_channel(int sock, | |
fd17d7ce | 757 | enum lttng_ust_abi_chan_type type, |
74d81a6c MD |
758 | void *data, |
759 | uint64_t size, | |
ff0f5728 | 760 | int wakeup_fd, |
74d81a6c MD |
761 | int send_fd_only) |
762 | { | |
763 | ssize_t len; | |
764 | ||
765 | if (!send_fd_only) { | |
766 | /* Send mmap size */ | |
767 | len = ustcomm_send_unix_sock(sock, &size, sizeof(size)); | |
768 | if (len != sizeof(size)) { | |
769 | if (len < 0) | |
770 | return len; | |
771 | else | |
772 | return -EIO; | |
773 | } | |
774 | ||
775 | /* Send channel type */ | |
776 | len = ustcomm_send_unix_sock(sock, &type, sizeof(type)); | |
777 | if (len != sizeof(type)) { | |
778 | if (len < 0) | |
779 | return len; | |
780 | else | |
781 | return -EIO; | |
782 | } | |
783 | } | |
784 | ||
785 | /* Send channel data */ | |
786 | len = ustcomm_send_unix_sock(sock, data, size); | |
787 | if (len != size) { | |
788 | if (len < 0) | |
789 | return len; | |
790 | else | |
791 | return -EIO; | |
792 | } | |
57773204 | 793 | |
ff0f5728 MD |
794 | /* Send wakeup fd */ |
795 | len = ustcomm_send_fds_unix_sock(sock, &wakeup_fd, 1); | |
796 | if (len <= 0) { | |
797 | if (len < 0) | |
798 | return len; | |
799 | else | |
800 | return -EIO; | |
801 | } | |
74d81a6c MD |
802 | return 0; |
803 | } | |
804 | ||
805 | static | |
806 | int ustctl_send_stream(int sock, | |
807 | uint32_t stream_nr, | |
808 | uint64_t memory_map_size, | |
809 | int shm_fd, int wakeup_fd, | |
810 | int send_fd_only) | |
57773204 | 811 | { |
74d81a6c MD |
812 | ssize_t len; |
813 | int fds[2]; | |
814 | ||
815 | if (!send_fd_only) { | |
816 | if (shm_fd < 0) { | |
817 | /* finish iteration */ | |
818 | uint64_t v = -1; | |
819 | ||
820 | len = ustcomm_send_unix_sock(sock, &v, sizeof(v)); | |
821 | if (len != sizeof(v)) { | |
822 | if (len < 0) | |
823 | return len; | |
824 | else | |
825 | return -EIO; | |
826 | } | |
827 | return 0; | |
828 | } | |
829 | ||
830 | /* Send mmap size */ | |
831 | len = ustcomm_send_unix_sock(sock, &memory_map_size, | |
832 | sizeof(memory_map_size)); | |
833 | if (len != sizeof(memory_map_size)) { | |
834 | if (len < 0) | |
835 | return len; | |
836 | else | |
837 | return -EIO; | |
838 | } | |
839 | ||
840 | /* Send stream nr */ | |
841 | len = ustcomm_send_unix_sock(sock, &stream_nr, | |
842 | sizeof(stream_nr)); | |
843 | if (len != sizeof(stream_nr)) { | |
844 | if (len < 0) | |
845 | return len; | |
846 | else | |
847 | return -EIO; | |
848 | } | |
849 | } | |
850 | ||
851 | /* Send shm fd and wakeup fd */ | |
852 | fds[0] = shm_fd; | |
853 | fds[1] = wakeup_fd; | |
854 | len = ustcomm_send_fds_unix_sock(sock, fds, 2); | |
855 | if (len <= 0) { | |
856 | if (len < 0) | |
857 | return len; | |
858 | else | |
859 | return -EIO; | |
860 | } | |
861 | return 0; | |
862 | } | |
863 | ||
864 | int ustctl_recv_channel_from_consumer(int sock, | |
fd17d7ce | 865 | struct lttng_ust_abi_object_data **_channel_data) |
74d81a6c | 866 | { |
fd17d7ce | 867 | struct lttng_ust_abi_object_data *channel_data; |
74d81a6c | 868 | ssize_t len; |
ff0f5728 | 869 | int wakeup_fd; |
7a784989 | 870 | int ret; |
57773204 | 871 | |
74d81a6c MD |
872 | channel_data = zmalloc(sizeof(*channel_data)); |
873 | if (!channel_data) { | |
874 | ret = -ENOMEM; | |
875 | goto error_alloc; | |
876 | } | |
fd17d7ce | 877 | channel_data->type = LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL; |
12f3dabc | 878 | channel_data->handle = -1; |
74d81a6c MD |
879 | |
880 | /* recv mmap size */ | |
881 | len = ustcomm_recv_unix_sock(sock, &channel_data->size, | |
882 | sizeof(channel_data->size)); | |
883 | if (len != sizeof(channel_data->size)) { | |
884 | if (len < 0) | |
885 | ret = len; | |
886 | else | |
887 | ret = -EINVAL; | |
888 | goto error; | |
889 | } | |
9bfc503d | 890 | |
74d81a6c MD |
891 | /* recv channel type */ |
892 | len = ustcomm_recv_unix_sock(sock, &channel_data->u.channel.type, | |
893 | sizeof(channel_data->u.channel.type)); | |
894 | if (len != sizeof(channel_data->u.channel.type)) { | |
895 | if (len < 0) | |
896 | ret = len; | |
897 | else | |
898 | ret = -EINVAL; | |
899 | goto error; | |
900 | } | |
901 | ||
902 | /* recv channel data */ | |
903 | channel_data->u.channel.data = zmalloc(channel_data->size); | |
904 | if (!channel_data->u.channel.data) { | |
905 | ret = -ENOMEM; | |
906 | goto error; | |
907 | } | |
908 | len = ustcomm_recv_unix_sock(sock, channel_data->u.channel.data, | |
909 | channel_data->size); | |
910 | if (len != channel_data->size) { | |
911 | if (len < 0) | |
912 | ret = len; | |
913 | else | |
914 | ret = -EINVAL; | |
915 | goto error_recv_data; | |
916 | } | |
ff0f5728 MD |
917 | /* recv wakeup fd */ |
918 | len = ustcomm_recv_fds_unix_sock(sock, &wakeup_fd, 1); | |
919 | if (len <= 0) { | |
920 | if (len < 0) { | |
921 | ret = len; | |
922 | goto error_recv_data; | |
923 | } else { | |
924 | ret = -EIO; | |
925 | goto error_recv_data; | |
926 | } | |
927 | } | |
928 | channel_data->u.channel.wakeup_fd = wakeup_fd; | |
74d81a6c MD |
929 | *_channel_data = channel_data; |
930 | return 0; | |
931 | ||
932 | error_recv_data: | |
933 | free(channel_data->u.channel.data); | |
934 | error: | |
935 | free(channel_data); | |
936 | error_alloc: | |
937 | return ret; | |
938 | } | |
939 | ||
940 | int ustctl_recv_stream_from_consumer(int sock, | |
fd17d7ce | 941 | struct lttng_ust_abi_object_data **_stream_data) |
74d81a6c | 942 | { |
fd17d7ce | 943 | struct lttng_ust_abi_object_data *stream_data; |
74d81a6c MD |
944 | ssize_t len; |
945 | int ret; | |
946 | int fds[2]; | |
947 | ||
948 | stream_data = zmalloc(sizeof(*stream_data)); | |
949 | if (!stream_data) { | |
950 | ret = -ENOMEM; | |
951 | goto error_alloc; | |
57773204 | 952 | } |
74d81a6c | 953 | |
fd17d7ce | 954 | stream_data->type = LTTNG_UST_ABI_OBJECT_TYPE_STREAM; |
74d81a6c MD |
955 | stream_data->handle = -1; |
956 | ||
957 | /* recv mmap size */ | |
958 | len = ustcomm_recv_unix_sock(sock, &stream_data->size, | |
959 | sizeof(stream_data->size)); | |
960 | if (len != sizeof(stream_data->size)) { | |
961 | if (len < 0) | |
962 | ret = len; | |
963 | else | |
964 | ret = -EINVAL; | |
965 | goto error; | |
966 | } | |
967 | if (stream_data->size == -1) { | |
968 | ret = -LTTNG_UST_ERR_NOENT; | |
969 | goto error; | |
970 | } | |
971 | ||
972 | /* recv stream nr */ | |
973 | len = ustcomm_recv_unix_sock(sock, &stream_data->u.stream.stream_nr, | |
974 | sizeof(stream_data->u.stream.stream_nr)); | |
975 | if (len != sizeof(stream_data->u.stream.stream_nr)) { | |
976 | if (len < 0) | |
977 | ret = len; | |
978 | else | |
979 | ret = -EINVAL; | |
980 | goto error; | |
981 | } | |
982 | ||
983 | /* recv shm fd and wakeup fd */ | |
984 | len = ustcomm_recv_fds_unix_sock(sock, fds, 2); | |
985 | if (len <= 0) { | |
986 | if (len < 0) { | |
987 | ret = len; | |
988 | goto error; | |
989 | } else { | |
990 | ret = -EIO; | |
991 | goto error; | |
0bfe09ec | 992 | } |
0bfe09ec | 993 | } |
74d81a6c MD |
994 | stream_data->u.stream.shm_fd = fds[0]; |
995 | stream_data->u.stream.wakeup_fd = fds[1]; | |
996 | *_stream_data = stream_data; | |
997 | return 0; | |
0bfe09ec | 998 | |
74d81a6c MD |
999 | error: |
1000 | free(stream_data); | |
1001 | error_alloc: | |
1002 | return ret; | |
1003 | } | |
1004 | ||
1005 | int ustctl_send_channel_to_ust(int sock, int session_handle, | |
fd17d7ce | 1006 | struct lttng_ust_abi_object_data *channel_data) |
74d81a6c MD |
1007 | { |
1008 | struct ustcomm_ust_msg lum; | |
1009 | struct ustcomm_ust_reply lur; | |
1010 | int ret; | |
1011 | ||
1012 | if (!channel_data) | |
1013 | return -EINVAL; | |
1014 | ||
1015 | memset(&lum, 0, sizeof(lum)); | |
1016 | lum.handle = session_handle; | |
fd17d7ce | 1017 | lum.cmd = LTTNG_UST_ABI_CHANNEL; |
74d81a6c MD |
1018 | lum.u.channel.len = channel_data->size; |
1019 | lum.u.channel.type = channel_data->u.channel.type; | |
1020 | ret = ustcomm_send_app_msg(sock, &lum); | |
1021 | if (ret) | |
1022 | return ret; | |
1023 | ||
1024 | ret = ustctl_send_channel(sock, | |
1025 | channel_data->u.channel.type, | |
1026 | channel_data->u.channel.data, | |
1027 | channel_data->size, | |
ff0f5728 | 1028 | channel_data->u.channel.wakeup_fd, |
74d81a6c MD |
1029 | 1); |
1030 | if (ret) | |
1031 | return ret; | |
1032 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1033 | if (!ret) { | |
7f2348b8 | 1034 | channel_data->handle = lur.ret_val; |
57773204 | 1035 | } |
74d81a6c MD |
1036 | return ret; |
1037 | } | |
1038 | ||
1039 | int ustctl_send_stream_to_ust(int sock, | |
fd17d7ce MD |
1040 | struct lttng_ust_abi_object_data *channel_data, |
1041 | struct lttng_ust_abi_object_data *stream_data) | |
74d81a6c MD |
1042 | { |
1043 | struct ustcomm_ust_msg lum; | |
1044 | struct ustcomm_ust_reply lur; | |
1045 | int ret; | |
1046 | ||
1047 | memset(&lum, 0, sizeof(lum)); | |
1048 | lum.handle = channel_data->handle; | |
fd17d7ce | 1049 | lum.cmd = LTTNG_UST_ABI_STREAM; |
74d81a6c MD |
1050 | lum.u.stream.len = stream_data->size; |
1051 | lum.u.stream.stream_nr = stream_data->u.stream.stream_nr; | |
1052 | ret = ustcomm_send_app_msg(sock, &lum); | |
1053 | if (ret) | |
1054 | return ret; | |
1055 | ||
1056 | assert(stream_data); | |
fd17d7ce | 1057 | assert(stream_data->type == LTTNG_UST_ABI_OBJECT_TYPE_STREAM); |
74d81a6c MD |
1058 | |
1059 | ret = ustctl_send_stream(sock, | |
1060 | stream_data->u.stream.stream_nr, | |
1061 | stream_data->size, | |
1062 | stream_data->u.stream.shm_fd, | |
1063 | stream_data->u.stream.wakeup_fd, 1); | |
1064 | if (ret) | |
1065 | return ret; | |
1066 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1067 | } | |
1068 | ||
fd17d7ce MD |
1069 | int ustctl_duplicate_ust_object_data(struct lttng_ust_abi_object_data **dest, |
1070 | struct lttng_ust_abi_object_data *src) | |
12f3dabc | 1071 | { |
fd17d7ce | 1072 | struct lttng_ust_abi_object_data *obj; |
12f3dabc MD |
1073 | int ret; |
1074 | ||
1075 | if (src->handle != -1) { | |
1076 | ret = -EINVAL; | |
1077 | goto error; | |
1078 | } | |
1079 | ||
1080 | obj = zmalloc(sizeof(*obj)); | |
1081 | if (!obj) { | |
1082 | ret = -ENOMEM; | |
1083 | goto error; | |
1084 | } | |
1085 | ||
1086 | obj->type = src->type; | |
1087 | obj->handle = src->handle; | |
1088 | obj->size = src->size; | |
1089 | ||
1090 | switch (obj->type) { | |
fd17d7ce | 1091 | case LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL: |
12f3dabc MD |
1092 | { |
1093 | obj->u.channel.type = src->u.channel.type; | |
1094 | if (src->u.channel.wakeup_fd >= 0) { | |
1095 | obj->u.channel.wakeup_fd = | |
1096 | dup(src->u.channel.wakeup_fd); | |
1097 | if (obj->u.channel.wakeup_fd < 0) { | |
1098 | ret = errno; | |
1099 | goto chan_error_wakeup_fd; | |
1100 | } | |
1101 | } else { | |
1102 | obj->u.channel.wakeup_fd = | |
1103 | src->u.channel.wakeup_fd; | |
1104 | } | |
1105 | obj->u.channel.data = zmalloc(obj->size); | |
1106 | if (!obj->u.channel.data) { | |
1107 | ret = -ENOMEM; | |
1108 | goto chan_error_alloc; | |
1109 | } | |
1110 | memcpy(obj->u.channel.data, src->u.channel.data, obj->size); | |
1111 | break; | |
1112 | ||
1113 | chan_error_alloc: | |
1114 | if (src->u.channel.wakeup_fd >= 0) { | |
1115 | int closeret; | |
1116 | ||
1117 | closeret = close(obj->u.channel.wakeup_fd); | |
1118 | if (closeret) { | |
1119 | PERROR("close"); | |
1120 | } | |
1121 | } | |
1122 | chan_error_wakeup_fd: | |
1123 | goto error_type; | |
1124 | ||
1125 | } | |
1126 | ||
fd17d7ce | 1127 | case LTTNG_UST_ABI_OBJECT_TYPE_STREAM: |
12f3dabc MD |
1128 | { |
1129 | obj->u.stream.stream_nr = src->u.stream.stream_nr; | |
1130 | if (src->u.stream.wakeup_fd >= 0) { | |
1131 | obj->u.stream.wakeup_fd = | |
1132 | dup(src->u.stream.wakeup_fd); | |
1133 | if (obj->u.stream.wakeup_fd < 0) { | |
1134 | ret = errno; | |
1135 | goto stream_error_wakeup_fd; | |
1136 | } | |
1137 | } else { | |
1138 | obj->u.stream.wakeup_fd = | |
1139 | src->u.stream.wakeup_fd; | |
1140 | } | |
1141 | ||
1142 | if (src->u.stream.shm_fd >= 0) { | |
1143 | obj->u.stream.shm_fd = | |
1144 | dup(src->u.stream.shm_fd); | |
1145 | if (obj->u.stream.shm_fd < 0) { | |
1146 | ret = errno; | |
1147 | goto stream_error_shm_fd; | |
1148 | } | |
1149 | } else { | |
1150 | obj->u.stream.shm_fd = | |
1151 | src->u.stream.shm_fd; | |
1152 | } | |
1153 | break; | |
1154 | ||
1155 | stream_error_shm_fd: | |
1156 | if (src->u.stream.wakeup_fd >= 0) { | |
1157 | int closeret; | |
1158 | ||
1159 | closeret = close(obj->u.stream.wakeup_fd); | |
1160 | if (closeret) { | |
1161 | PERROR("close"); | |
1162 | } | |
1163 | } | |
1164 | stream_error_wakeup_fd: | |
1165 | goto error_type; | |
1166 | } | |
1167 | ||
fd17d7ce | 1168 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER: |
ebabbf58 MD |
1169 | { |
1170 | obj->u.counter.data = zmalloc(obj->size); | |
1171 | if (!obj->u.counter.data) { | |
1172 | ret = -ENOMEM; | |
1173 | goto error_type; | |
1174 | } | |
1175 | memcpy(obj->u.counter.data, src->u.counter.data, obj->size); | |
1176 | break; | |
1177 | } | |
1178 | ||
fd17d7ce | 1179 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL: |
ebabbf58 MD |
1180 | { |
1181 | if (src->u.counter_global.shm_fd >= 0) { | |
1182 | obj->u.counter_global.shm_fd = | |
1183 | dup(src->u.counter_global.shm_fd); | |
1184 | if (obj->u.counter_global.shm_fd < 0) { | |
1185 | ret = errno; | |
1186 | goto error_type; | |
1187 | } | |
1188 | } | |
1189 | break; | |
1190 | } | |
1191 | ||
fd17d7ce | 1192 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU: |
ebabbf58 MD |
1193 | { |
1194 | obj->u.counter_cpu.cpu_nr = src->u.counter_cpu.cpu_nr; | |
1195 | if (src->u.counter_cpu.shm_fd >= 0) { | |
1196 | obj->u.counter_cpu.shm_fd = | |
1197 | dup(src->u.counter_cpu.shm_fd); | |
1198 | if (obj->u.counter_cpu.shm_fd < 0) { | |
1199 | ret = errno; | |
1200 | goto error_type; | |
1201 | } | |
1202 | } | |
1203 | break; | |
1204 | } | |
1205 | ||
12f3dabc MD |
1206 | default: |
1207 | ret = -EINVAL; | |
1208 | goto error_type; | |
1209 | } | |
1210 | ||
1211 | *dest = obj; | |
1212 | return 0; | |
1213 | ||
1214 | error_type: | |
1215 | free(obj); | |
1216 | error: | |
1217 | return ret; | |
1218 | } | |
1219 | ||
74d81a6c MD |
1220 | |
1221 | /* Buffer operations */ | |
1222 | ||
5ea386c3 MD |
1223 | int ustctl_get_nr_stream_per_channel(void) |
1224 | { | |
1225 | return num_possible_cpus(); | |
1226 | } | |
1227 | ||
74d81a6c | 1228 | struct ustctl_consumer_channel * |
5ea386c3 MD |
1229 | ustctl_create_channel(struct ustctl_consumer_channel_attr *attr, |
1230 | const int *stream_fds, int nr_stream_fds) | |
74d81a6c MD |
1231 | { |
1232 | struct ustctl_consumer_channel *chan; | |
1233 | const char *transport_name; | |
1234 | struct lttng_transport *transport; | |
1235 | ||
1236 | switch (attr->type) { | |
fd17d7ce MD |
1237 | case LTTNG_UST_ABI_CHAN_PER_CPU: |
1238 | if (attr->output == LTTNG_UST_ABI_MMAP) { | |
34a91bdb MD |
1239 | if (attr->overwrite) { |
1240 | if (attr->read_timer_interval == 0) { | |
1241 | transport_name = "relay-overwrite-mmap"; | |
1242 | } else { | |
1243 | transport_name = "relay-overwrite-rt-mmap"; | |
1244 | } | |
1245 | } else { | |
1246 | if (attr->read_timer_interval == 0) { | |
1247 | transport_name = "relay-discard-mmap"; | |
1248 | } else { | |
1249 | transport_name = "relay-discard-rt-mmap"; | |
1250 | } | |
1251 | } | |
74d81a6c MD |
1252 | } else { |
1253 | return NULL; | |
1254 | } | |
c1fca457 | 1255 | break; |
fd17d7ce MD |
1256 | case LTTNG_UST_ABI_CHAN_METADATA: |
1257 | if (attr->output == LTTNG_UST_ABI_MMAP) | |
74d81a6c MD |
1258 | transport_name = "relay-metadata-mmap"; |
1259 | else | |
1260 | return NULL; | |
c1fca457 MD |
1261 | break; |
1262 | default: | |
74d81a6c | 1263 | transport_name = "<unknown>"; |
c1fca457 MD |
1264 | return NULL; |
1265 | } | |
74d81a6c MD |
1266 | |
1267 | transport = lttng_transport_find(transport_name); | |
1268 | if (!transport) { | |
1269 | DBG("LTTng transport %s not found\n", | |
32ce8569 | 1270 | transport_name); |
74d81a6c | 1271 | return NULL; |
7a784989 | 1272 | } |
74d81a6c MD |
1273 | |
1274 | chan = zmalloc(sizeof(*chan)); | |
1275 | if (!chan) | |
1276 | return NULL; | |
1277 | ||
1278 | chan->chan = transport->ops.channel_create(transport_name, NULL, | |
32ce8569 | 1279 | attr->subbuf_size, attr->num_subbuf, |
74d81a6c | 1280 | attr->switch_timer_interval, |
32ce8569 | 1281 | attr->read_timer_interval, |
a9ff648c | 1282 | attr->uuid, attr->chan_id, |
b2c5f61a MD |
1283 | stream_fds, nr_stream_fds, |
1284 | attr->blocking_timeout); | |
74d81a6c MD |
1285 | if (!chan->chan) { |
1286 | goto chan_error; | |
1287 | } | |
1288 | chan->chan->ops = &transport->ops; | |
1289 | memcpy(&chan->attr, attr, sizeof(chan->attr)); | |
cb7378b3 MD |
1290 | chan->wait_fd = ustctl_channel_get_wait_fd(chan); |
1291 | chan->wakeup_fd = ustctl_channel_get_wakeup_fd(chan); | |
74d81a6c MD |
1292 | return chan; |
1293 | ||
1294 | chan_error: | |
1295 | free(chan); | |
1296 | return NULL; | |
57773204 MD |
1297 | } |
1298 | ||
74d81a6c | 1299 | void ustctl_destroy_channel(struct ustctl_consumer_channel *chan) |
57773204 | 1300 | { |
b24e4e91 MD |
1301 | (void) ustctl_channel_close_wait_fd(chan); |
1302 | (void) ustctl_channel_close_wakeup_fd(chan); | |
74d81a6c MD |
1303 | chan->chan->ops->channel_destroy(chan->chan); |
1304 | free(chan); | |
1305 | } | |
1306 | ||
1307 | int ustctl_send_channel_to_sessiond(int sock, | |
1308 | struct ustctl_consumer_channel *channel) | |
1309 | { | |
1310 | struct shm_object_table *table; | |
57773204 | 1311 | |
74d81a6c MD |
1312 | table = channel->chan->handle->table; |
1313 | if (table->size <= 0) | |
9bfc503d | 1314 | return -EINVAL; |
74d81a6c MD |
1315 | return ustctl_send_channel(sock, |
1316 | channel->attr.type, | |
1317 | table->objects[0].memory_map, | |
1318 | table->objects[0].memory_map_size, | |
ff0f5728 | 1319 | channel->wakeup_fd, |
74d81a6c MD |
1320 | 0); |
1321 | } | |
9bfc503d | 1322 | |
74d81a6c MD |
1323 | int ustctl_send_stream_to_sessiond(int sock, |
1324 | struct ustctl_consumer_stream *stream) | |
1325 | { | |
1326 | if (!stream) | |
1327 | return ustctl_send_stream(sock, -1U, -1U, -1, -1, 0); | |
1328 | ||
1329 | return ustctl_send_stream(sock, | |
1330 | stream->cpu, | |
1331 | stream->memory_map_size, | |
1332 | stream->shm_fd, stream->wakeup_fd, | |
1333 | 0); | |
57773204 MD |
1334 | } |
1335 | ||
c9023c93 MD |
1336 | int ustctl_write_metadata_to_channel( |
1337 | struct ustctl_consumer_channel *channel, | |
1338 | const char *metadata_str, /* NOT null-terminated */ | |
1339 | size_t len) /* metadata length */ | |
1340 | { | |
1341 | struct lttng_ust_lib_ring_buffer_ctx ctx; | |
1342 | struct lttng_channel *chan = channel->chan; | |
1343 | const char *str = metadata_str; | |
1344 | int ret = 0, waitret; | |
1345 | size_t reserve_len, pos; | |
1346 | ||
1347 | for (pos = 0; pos < len; pos += reserve_len) { | |
1348 | reserve_len = min_t(size_t, | |
1349 | chan->ops->packet_avail_size(chan->chan, chan->handle), | |
1350 | len - pos); | |
1351 | lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL, reserve_len, | |
2b7080aa | 1352 | sizeof(char), -1, chan->handle); |
c9023c93 MD |
1353 | /* |
1354 | * We don't care about metadata buffer's records lost | |
1355 | * count, because we always retry here. Report error if | |
1356 | * we need to bail out after timeout or being | |
1357 | * interrupted. | |
1358 | */ | |
1359 | waitret = wait_cond_interruptible_timeout( | |
1360 | ({ | |
1361 | ret = chan->ops->event_reserve(&ctx, 0); | |
1362 | ret != -ENOBUFS || !ret; | |
1363 | }), | |
1364 | LTTNG_METADATA_TIMEOUT_MSEC); | |
1365 | if (waitret == -ETIMEDOUT || waitret == -EINTR || ret) { | |
1366 | DBG("LTTng: Failure to write metadata to buffers (%s)\n", | |
1367 | waitret == -EINTR ? "interrupted" : | |
1368 | (ret == -ENOBUFS ? "timeout" : "I/O error")); | |
1369 | if (waitret == -EINTR) | |
1370 | ret = waitret; | |
1371 | goto end; | |
1372 | } | |
1373 | chan->ops->event_write(&ctx, &str[pos], reserve_len); | |
1374 | chan->ops->event_commit(&ctx); | |
1375 | } | |
1376 | end: | |
1377 | return ret; | |
1378 | } | |
1379 | ||
3ef94b0e JD |
1380 | /* |
1381 | * Write at most one packet in the channel. | |
1382 | * Returns the number of bytes written on success, < 0 on error. | |
1383 | */ | |
1384 | ssize_t ustctl_write_one_packet_to_channel( | |
1385 | struct ustctl_consumer_channel *channel, | |
1386 | const char *metadata_str, /* NOT null-terminated */ | |
1387 | size_t len) /* metadata length */ | |
1388 | { | |
1389 | struct lttng_ust_lib_ring_buffer_ctx ctx; | |
1390 | struct lttng_channel *chan = channel->chan; | |
1391 | const char *str = metadata_str; | |
1392 | ssize_t reserve_len; | |
1393 | int ret; | |
1394 | ||
1395 | reserve_len = min_t(ssize_t, | |
1396 | chan->ops->packet_avail_size(chan->chan, chan->handle), | |
1397 | len); | |
1398 | lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL, reserve_len, | |
2b7080aa | 1399 | sizeof(char), -1, chan->handle); |
3ef94b0e JD |
1400 | ret = chan->ops->event_reserve(&ctx, 0); |
1401 | if (ret != 0) { | |
1402 | DBG("LTTng: event reservation failed"); | |
1403 | assert(ret < 0); | |
1404 | reserve_len = ret; | |
1405 | goto end; | |
1406 | } | |
1407 | chan->ops->event_write(&ctx, str, reserve_len); | |
1408 | chan->ops->event_commit(&ctx); | |
1409 | ||
1410 | end: | |
1411 | return reserve_len; | |
1412 | } | |
1413 | ||
ff0f5728 MD |
1414 | int ustctl_channel_close_wait_fd(struct ustctl_consumer_channel *consumer_chan) |
1415 | { | |
1416 | struct channel *chan; | |
cb7378b3 | 1417 | int ret; |
ff0f5728 MD |
1418 | |
1419 | chan = consumer_chan->chan->chan; | |
cb7378b3 | 1420 | ret = ring_buffer_channel_close_wait_fd(&chan->backend.config, |
ff0f5728 | 1421 | chan, chan->handle); |
cb7378b3 MD |
1422 | if (!ret) |
1423 | consumer_chan->wait_fd = -1; | |
1424 | return ret; | |
ff0f5728 MD |
1425 | } |
1426 | ||
1427 | int ustctl_channel_close_wakeup_fd(struct ustctl_consumer_channel *consumer_chan) | |
1428 | { | |
1429 | struct channel *chan; | |
cb7378b3 | 1430 | int ret; |
ff0f5728 MD |
1431 | |
1432 | chan = consumer_chan->chan->chan; | |
cb7378b3 | 1433 | ret = ring_buffer_channel_close_wakeup_fd(&chan->backend.config, |
ff0f5728 | 1434 | chan, chan->handle); |
cb7378b3 MD |
1435 | if (!ret) |
1436 | consumer_chan->wakeup_fd = -1; | |
1437 | return ret; | |
ff0f5728 MD |
1438 | } |
1439 | ||
74d81a6c | 1440 | int ustctl_stream_close_wait_fd(struct ustctl_consumer_stream *stream) |
5224b5c8 MD |
1441 | { |
1442 | struct channel *chan; | |
1443 | ||
74d81a6c | 1444 | chan = stream->chan->chan->chan; |
ff0f5728 | 1445 | return ring_buffer_stream_close_wait_fd(&chan->backend.config, |
74d81a6c | 1446 | chan, stream->handle, stream->cpu); |
5224b5c8 MD |
1447 | } |
1448 | ||
74d81a6c | 1449 | int ustctl_stream_close_wakeup_fd(struct ustctl_consumer_stream *stream) |
6e922b24 | 1450 | { |
66bdd22a | 1451 | struct channel *chan; |
74d81a6c MD |
1452 | |
1453 | chan = stream->chan->chan->chan; | |
ff0f5728 | 1454 | return ring_buffer_stream_close_wakeup_fd(&chan->backend.config, |
74d81a6c MD |
1455 | chan, stream->handle, stream->cpu); |
1456 | } | |
1457 | ||
1458 | struct ustctl_consumer_stream * | |
1459 | ustctl_create_stream(struct ustctl_consumer_channel *channel, | |
1460 | int cpu) | |
1461 | { | |
1462 | struct ustctl_consumer_stream *stream; | |
1463 | struct lttng_ust_shm_handle *handle; | |
1464 | struct channel *chan; | |
1465 | int shm_fd, wait_fd, wakeup_fd; | |
1466 | uint64_t memory_map_size; | |
4cfec15c | 1467 | struct lttng_ust_lib_ring_buffer *buf; |
6e922b24 MD |
1468 | int ret; |
1469 | ||
74d81a6c MD |
1470 | if (!channel) |
1471 | return NULL; | |
1472 | handle = channel->chan->handle; | |
9bfc503d MD |
1473 | if (!handle) |
1474 | return NULL; | |
1475 | ||
74d81a6c | 1476 | chan = channel->chan->chan; |
6e922b24 | 1477 | buf = channel_get_ring_buffer(&chan->backend.config, |
74d81a6c MD |
1478 | chan, cpu, handle, &shm_fd, &wait_fd, |
1479 | &wakeup_fd, &memory_map_size); | |
6e922b24 MD |
1480 | if (!buf) |
1481 | return NULL; | |
74d81a6c | 1482 | ret = lib_ring_buffer_open_read(buf, handle); |
6e922b24 MD |
1483 | if (ret) |
1484 | return NULL; | |
74d81a6c MD |
1485 | |
1486 | stream = zmalloc(sizeof(*stream)); | |
1487 | if (!stream) | |
1488 | goto alloc_error; | |
1489 | stream->handle = handle; | |
1490 | stream->buf = buf; | |
1491 | stream->chan = channel; | |
1492 | stream->shm_fd = shm_fd; | |
1493 | stream->wait_fd = wait_fd; | |
1494 | stream->wakeup_fd = wakeup_fd; | |
1495 | stream->memory_map_size = memory_map_size; | |
1496 | stream->cpu = cpu; | |
1497 | return stream; | |
1498 | ||
1499 | alloc_error: | |
1500 | return NULL; | |
1501 | } | |
1502 | ||
1503 | void ustctl_destroy_stream(struct ustctl_consumer_stream *stream) | |
1504 | { | |
1505 | struct lttng_ust_lib_ring_buffer *buf; | |
1506 | struct ustctl_consumer_channel *consumer_chan; | |
1507 | ||
1508 | assert(stream); | |
1509 | buf = stream->buf; | |
1510 | consumer_chan = stream->chan; | |
b24e4e91 MD |
1511 | (void) ustctl_stream_close_wait_fd(stream); |
1512 | (void) ustctl_stream_close_wakeup_fd(stream); | |
74d81a6c MD |
1513 | lib_ring_buffer_release_read(buf, consumer_chan->chan->handle); |
1514 | free(stream); | |
6e922b24 MD |
1515 | } |
1516 | ||
ff0f5728 MD |
1517 | int ustctl_channel_get_wait_fd(struct ustctl_consumer_channel *chan) |
1518 | { | |
1519 | if (!chan) | |
1520 | return -EINVAL; | |
1521 | return shm_get_wait_fd(chan->chan->handle, | |
1522 | &chan->chan->handle->chan._ref); | |
1523 | } | |
1524 | ||
1525 | int ustctl_channel_get_wakeup_fd(struct ustctl_consumer_channel *chan) | |
1526 | { | |
1527 | if (!chan) | |
1528 | return -EINVAL; | |
1529 | return shm_get_wakeup_fd(chan->chan->handle, | |
1530 | &chan->chan->handle->chan._ref); | |
1531 | } | |
1532 | ||
1533 | int ustctl_stream_get_wait_fd(struct ustctl_consumer_stream *stream) | |
6e922b24 | 1534 | { |
74d81a6c MD |
1535 | struct lttng_ust_lib_ring_buffer *buf; |
1536 | struct ustctl_consumer_channel *consumer_chan; | |
1537 | ||
1538 | if (!stream) | |
1539 | return -EINVAL; | |
1540 | buf = stream->buf; | |
1541 | consumer_chan = stream->chan; | |
1542 | return shm_get_wait_fd(consumer_chan->chan->handle, &buf->self._ref); | |
1543 | } | |
1544 | ||
ff0f5728 | 1545 | int ustctl_stream_get_wakeup_fd(struct ustctl_consumer_stream *stream) |
74d81a6c MD |
1546 | { |
1547 | struct lttng_ust_lib_ring_buffer *buf; | |
1548 | struct ustctl_consumer_channel *consumer_chan; | |
1549 | ||
1550 | if (!stream) | |
1551 | return -EINVAL; | |
1552 | buf = stream->buf; | |
1553 | consumer_chan = stream->chan; | |
1554 | return shm_get_wakeup_fd(consumer_chan->chan->handle, &buf->self._ref); | |
6e922b24 MD |
1555 | } |
1556 | ||
57773204 MD |
1557 | /* For mmap mode, readable without "get" operation */ |
1558 | ||
74d81a6c | 1559 | void *ustctl_get_mmap_base(struct ustctl_consumer_stream *stream) |
9095efe9 | 1560 | { |
74d81a6c MD |
1561 | struct lttng_ust_lib_ring_buffer *buf; |
1562 | struct ustctl_consumer_channel *consumer_chan; | |
1563 | ||
1564 | if (!stream) | |
9bfc503d | 1565 | return NULL; |
74d81a6c MD |
1566 | buf = stream->buf; |
1567 | consumer_chan = stream->chan; | |
1568 | return shmp(consumer_chan->chan->handle, buf->backend.memory_map); | |
9095efe9 MD |
1569 | } |
1570 | ||
57773204 | 1571 | /* returns the length to mmap. */ |
74d81a6c | 1572 | int ustctl_get_mmap_len(struct ustctl_consumer_stream *stream, |
57773204 MD |
1573 | unsigned long *len) |
1574 | { | |
74d81a6c | 1575 | struct ustctl_consumer_channel *consumer_chan; |
57773204 | 1576 | unsigned long mmap_buf_len; |
66bdd22a | 1577 | struct channel *chan; |
57773204 | 1578 | |
74d81a6c | 1579 | if (!stream) |
9bfc503d | 1580 | return -EINVAL; |
74d81a6c MD |
1581 | consumer_chan = stream->chan; |
1582 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1583 | if (chan->backend.config.output != RING_BUFFER_MMAP) |
1584 | return -EINVAL; | |
1585 | mmap_buf_len = chan->backend.buf_size; | |
1586 | if (chan->backend.extra_reader_sb) | |
1587 | mmap_buf_len += chan->backend.subbuf_size; | |
1588 | if (mmap_buf_len > INT_MAX) | |
1589 | return -EFBIG; | |
1590 | *len = mmap_buf_len; | |
1591 | return 0; | |
1592 | } | |
1593 | ||
1594 | /* returns the maximum size for sub-buffers. */ | |
74d81a6c | 1595 | int ustctl_get_max_subbuf_size(struct ustctl_consumer_stream *stream, |
57773204 MD |
1596 | unsigned long *len) |
1597 | { | |
74d81a6c | 1598 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1599 | struct channel *chan; |
57773204 | 1600 | |
74d81a6c | 1601 | if (!stream) |
9bfc503d | 1602 | return -EINVAL; |
74d81a6c MD |
1603 | consumer_chan = stream->chan; |
1604 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1605 | *len = chan->backend.subbuf_size; |
1606 | return 0; | |
1607 | } | |
1608 | ||
1609 | /* | |
1610 | * For mmap mode, operate on the current packet (between get/put or | |
1611 | * get_next/put_next). | |
1612 | */ | |
1613 | ||
1614 | /* returns the offset of the subbuffer belonging to the mmap reader. */ | |
74d81a6c MD |
1615 | int ustctl_get_mmap_read_offset(struct ustctl_consumer_stream *stream, |
1616 | unsigned long *off) | |
57773204 | 1617 | { |
66bdd22a | 1618 | struct channel *chan; |
57773204 | 1619 | unsigned long sb_bindex; |
74d81a6c MD |
1620 | struct lttng_ust_lib_ring_buffer *buf; |
1621 | struct ustctl_consumer_channel *consumer_chan; | |
34daae3e MD |
1622 | struct lttng_ust_lib_ring_buffer_backend_pages_shmp *barray_idx; |
1623 | struct lttng_ust_lib_ring_buffer_backend_pages *pages; | |
57773204 | 1624 | |
74d81a6c | 1625 | if (!stream) |
9bfc503d | 1626 | return -EINVAL; |
74d81a6c MD |
1627 | buf = stream->buf; |
1628 | consumer_chan = stream->chan; | |
1629 | chan = consumer_chan->chan->chan; | |
57773204 MD |
1630 | if (chan->backend.config.output != RING_BUFFER_MMAP) |
1631 | return -EINVAL; | |
1632 | sb_bindex = subbuffer_id_get_index(&chan->backend.config, | |
32ce8569 | 1633 | buf->backend.buf_rsb.id); |
34daae3e MD |
1634 | barray_idx = shmp_index(consumer_chan->chan->handle, buf->backend.array, |
1635 | sb_bindex); | |
1636 | if (!barray_idx) | |
1637 | return -EINVAL; | |
1638 | pages = shmp(consumer_chan->chan->handle, barray_idx->shmp); | |
1639 | if (!pages) | |
1640 | return -EINVAL; | |
1641 | *off = pages->mmap_offset; | |
57773204 MD |
1642 | return 0; |
1643 | } | |
1644 | ||
1645 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
74d81a6c MD |
1646 | int ustctl_get_subbuf_size(struct ustctl_consumer_stream *stream, |
1647 | unsigned long *len) | |
57773204 | 1648 | { |
74d81a6c | 1649 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1650 | struct channel *chan; |
74d81a6c | 1651 | struct lttng_ust_lib_ring_buffer *buf; |
57773204 | 1652 | |
74d81a6c | 1653 | if (!stream) |
9bfc503d MD |
1654 | return -EINVAL; |
1655 | ||
74d81a6c MD |
1656 | buf = stream->buf; |
1657 | consumer_chan = stream->chan; | |
1658 | chan = consumer_chan->chan->chan; | |
57773204 | 1659 | *len = lib_ring_buffer_get_read_data_size(&chan->backend.config, buf, |
74d81a6c | 1660 | consumer_chan->chan->handle); |
57773204 MD |
1661 | return 0; |
1662 | } | |
1663 | ||
1664 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
74d81a6c MD |
1665 | int ustctl_get_padded_subbuf_size(struct ustctl_consumer_stream *stream, |
1666 | unsigned long *len) | |
57773204 | 1667 | { |
74d81a6c | 1668 | struct ustctl_consumer_channel *consumer_chan; |
66bdd22a | 1669 | struct channel *chan; |
74d81a6c | 1670 | struct lttng_ust_lib_ring_buffer *buf; |
57773204 | 1671 | |
74d81a6c | 1672 | if (!stream) |
9bfc503d | 1673 | return -EINVAL; |
74d81a6c MD |
1674 | buf = stream->buf; |
1675 | consumer_chan = stream->chan; | |
1676 | chan = consumer_chan->chan->chan; | |
57773204 | 1677 | *len = lib_ring_buffer_get_read_data_size(&chan->backend.config, buf, |
74d81a6c | 1678 | consumer_chan->chan->handle); |
b72687b8 | 1679 | *len = LTTNG_UST_PAGE_ALIGN(*len); |
57773204 MD |
1680 | return 0; |
1681 | } | |
1682 | ||
1683 | /* Get exclusive read access to the next sub-buffer that can be read. */ | |
74d81a6c | 1684 | int ustctl_get_next_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1685 | { |
74d81a6c MD |
1686 | struct lttng_ust_lib_ring_buffer *buf; |
1687 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1688 | |
74d81a6c MD |
1689 | if (!stream) |
1690 | return -EINVAL; | |
1691 | buf = stream->buf; | |
1692 | consumer_chan = stream->chan; | |
1693 | return lib_ring_buffer_get_next_subbuf(buf, | |
1694 | consumer_chan->chan->handle); | |
57773204 MD |
1695 | } |
1696 | ||
1697 | ||
1698 | /* Release exclusive sub-buffer access, move consumer forward. */ | |
74d81a6c | 1699 | int ustctl_put_next_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1700 | { |
74d81a6c MD |
1701 | struct lttng_ust_lib_ring_buffer *buf; |
1702 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1703 | |
74d81a6c MD |
1704 | if (!stream) |
1705 | return -EINVAL; | |
1706 | buf = stream->buf; | |
1707 | consumer_chan = stream->chan; | |
1708 | lib_ring_buffer_put_next_subbuf(buf, consumer_chan->chan->handle); | |
57773204 MD |
1709 | return 0; |
1710 | } | |
1711 | ||
1712 | /* snapshot */ | |
1713 | ||
1714 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
74d81a6c | 1715 | int ustctl_snapshot(struct ustctl_consumer_stream *stream) |
57773204 | 1716 | { |
74d81a6c MD |
1717 | struct lttng_ust_lib_ring_buffer *buf; |
1718 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1719 | |
74d81a6c MD |
1720 | if (!stream) |
1721 | return -EINVAL; | |
1722 | buf = stream->buf; | |
1723 | consumer_chan = stream->chan; | |
57773204 | 1724 | return lib_ring_buffer_snapshot(buf, &buf->cons_snapshot, |
74d81a6c | 1725 | &buf->prod_snapshot, consumer_chan->chan->handle); |
57773204 MD |
1726 | } |
1727 | ||
f45930b7 JG |
1728 | /* |
1729 | * Get a snapshot of the current ring buffer producer and consumer positions | |
1730 | * even if the consumed and produced positions are contained within the same | |
1731 | * subbuffer. | |
1732 | */ | |
1733 | int ustctl_snapshot_sample_positions(struct ustctl_consumer_stream *stream) | |
1734 | { | |
1735 | struct lttng_ust_lib_ring_buffer *buf; | |
1736 | struct ustctl_consumer_channel *consumer_chan; | |
1737 | ||
1738 | if (!stream) | |
1739 | return -EINVAL; | |
1740 | buf = stream->buf; | |
1741 | consumer_chan = stream->chan; | |
1742 | return lib_ring_buffer_snapshot_sample_positions(buf, | |
1743 | &buf->cons_snapshot, &buf->prod_snapshot, | |
1744 | consumer_chan->chan->handle); | |
1745 | } | |
1746 | ||
57773204 | 1747 | /* Get the consumer position (iteration start) */ |
74d81a6c MD |
1748 | int ustctl_snapshot_get_consumed(struct ustctl_consumer_stream *stream, |
1749 | unsigned long *pos) | |
57773204 | 1750 | { |
74d81a6c | 1751 | struct lttng_ust_lib_ring_buffer *buf; |
9bfc503d | 1752 | |
74d81a6c MD |
1753 | if (!stream) |
1754 | return -EINVAL; | |
1755 | buf = stream->buf; | |
57773204 MD |
1756 | *pos = buf->cons_snapshot; |
1757 | return 0; | |
1758 | } | |
1759 | ||
1760 | /* Get the producer position (iteration end) */ | |
74d81a6c MD |
1761 | int ustctl_snapshot_get_produced(struct ustctl_consumer_stream *stream, |
1762 | unsigned long *pos) | |
57773204 | 1763 | { |
74d81a6c | 1764 | struct lttng_ust_lib_ring_buffer *buf; |
9bfc503d | 1765 | |
74d81a6c MD |
1766 | if (!stream) |
1767 | return -EINVAL; | |
1768 | buf = stream->buf; | |
57773204 MD |
1769 | *pos = buf->prod_snapshot; |
1770 | return 0; | |
1771 | } | |
1772 | ||
1773 | /* Get exclusive read access to the specified sub-buffer position */ | |
74d81a6c MD |
1774 | int ustctl_get_subbuf(struct ustctl_consumer_stream *stream, |
1775 | unsigned long *pos) | |
57773204 | 1776 | { |
74d81a6c MD |
1777 | struct lttng_ust_lib_ring_buffer *buf; |
1778 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1779 | |
74d81a6c MD |
1780 | if (!stream) |
1781 | return -EINVAL; | |
1782 | buf = stream->buf; | |
1783 | consumer_chan = stream->chan; | |
1784 | return lib_ring_buffer_get_subbuf(buf, *pos, | |
1785 | consumer_chan->chan->handle); | |
57773204 MD |
1786 | } |
1787 | ||
1788 | /* Release exclusive sub-buffer access */ | |
74d81a6c | 1789 | int ustctl_put_subbuf(struct ustctl_consumer_stream *stream) |
57773204 | 1790 | { |
74d81a6c MD |
1791 | struct lttng_ust_lib_ring_buffer *buf; |
1792 | struct ustctl_consumer_channel *consumer_chan; | |
9bfc503d | 1793 | |
74d81a6c MD |
1794 | if (!stream) |
1795 | return -EINVAL; | |
1796 | buf = stream->buf; | |
1797 | consumer_chan = stream->chan; | |
1798 | lib_ring_buffer_put_subbuf(buf, consumer_chan->chan->handle); | |
57773204 MD |
1799 | return 0; |
1800 | } | |
1801 | ||
74d81a6c | 1802 | void ustctl_flush_buffer(struct ustctl_consumer_stream *stream, |
b52190f2 | 1803 | int producer_active) |
57773204 | 1804 | { |
74d81a6c MD |
1805 | struct lttng_ust_lib_ring_buffer *buf; |
1806 | struct ustctl_consumer_channel *consumer_chan; | |
1807 | ||
1808 | assert(stream); | |
1809 | buf = stream->buf; | |
1810 | consumer_chan = stream->chan; | |
b52190f2 MD |
1811 | lib_ring_buffer_switch_slow(buf, |
1812 | producer_active ? SWITCH_ACTIVE : SWITCH_FLUSH, | |
74d81a6c MD |
1813 | consumer_chan->chan->handle); |
1814 | } | |
1815 | ||
beca55a1 MD |
1816 | void ustctl_clear_buffer(struct ustctl_consumer_stream *stream) |
1817 | { | |
1818 | struct lttng_ust_lib_ring_buffer *buf; | |
1819 | struct ustctl_consumer_channel *consumer_chan; | |
1820 | ||
1821 | assert(stream); | |
1822 | buf = stream->buf; | |
1823 | consumer_chan = stream->chan; | |
1824 | lib_ring_buffer_switch_slow(buf, SWITCH_ACTIVE, | |
1825 | consumer_chan->chan->handle); | |
1826 | lib_ring_buffer_clear_reader(buf, consumer_chan->chan->handle); | |
1827 | } | |
1828 | ||
b2f3252a JD |
1829 | static |
1830 | struct lttng_ust_client_lib_ring_buffer_client_cb *get_client_cb( | |
1831 | struct lttng_ust_lib_ring_buffer *buf, | |
1832 | struct lttng_ust_shm_handle *handle) | |
1833 | { | |
1834 | struct channel *chan; | |
1835 | const struct lttng_ust_lib_ring_buffer_config *config; | |
1836 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1837 | ||
1838 | chan = shmp(handle, buf->backend.chan); | |
34daae3e MD |
1839 | if (!chan) |
1840 | return NULL; | |
b2f3252a JD |
1841 | config = &chan->backend.config; |
1842 | if (!config->cb_ptr) | |
1843 | return NULL; | |
1844 | client_cb = caa_container_of(config->cb_ptr, | |
1845 | struct lttng_ust_client_lib_ring_buffer_client_cb, | |
1846 | parent); | |
1847 | return client_cb; | |
1848 | } | |
1849 | ||
1850 | int ustctl_get_timestamp_begin(struct ustctl_consumer_stream *stream, | |
1851 | uint64_t *timestamp_begin) | |
1852 | { | |
1853 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1854 | struct lttng_ust_lib_ring_buffer *buf; |
1855 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1856 | |
1857 | if (!stream || !timestamp_begin) | |
1858 | return -EINVAL; | |
e1919a41 MD |
1859 | buf = stream->buf; |
1860 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1861 | client_cb = get_client_cb(buf, handle); |
1862 | if (!client_cb) | |
1863 | return -ENOSYS; | |
1864 | return client_cb->timestamp_begin(buf, handle, timestamp_begin); | |
1865 | } | |
1866 | ||
1867 | int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream, | |
1868 | uint64_t *timestamp_end) | |
1869 | { | |
1870 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1871 | struct lttng_ust_lib_ring_buffer *buf; |
1872 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1873 | |
1874 | if (!stream || !timestamp_end) | |
1875 | return -EINVAL; | |
e1919a41 MD |
1876 | buf = stream->buf; |
1877 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1878 | client_cb = get_client_cb(buf, handle); |
1879 | if (!client_cb) | |
1880 | return -ENOSYS; | |
1881 | return client_cb->timestamp_end(buf, handle, timestamp_end); | |
1882 | } | |
1883 | ||
1884 | int ustctl_get_events_discarded(struct ustctl_consumer_stream *stream, | |
1885 | uint64_t *events_discarded) | |
1886 | { | |
1887 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1888 | struct lttng_ust_lib_ring_buffer *buf; |
1889 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1890 | |
1891 | if (!stream || !events_discarded) | |
1892 | return -EINVAL; | |
e1919a41 MD |
1893 | buf = stream->buf; |
1894 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1895 | client_cb = get_client_cb(buf, handle); |
1896 | if (!client_cb) | |
1897 | return -ENOSYS; | |
1898 | return client_cb->events_discarded(buf, handle, events_discarded); | |
1899 | } | |
1900 | ||
1901 | int ustctl_get_content_size(struct ustctl_consumer_stream *stream, | |
1902 | uint64_t *content_size) | |
1903 | { | |
1904 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1905 | struct lttng_ust_lib_ring_buffer *buf; |
1906 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1907 | |
1908 | if (!stream || !content_size) | |
1909 | return -EINVAL; | |
e1919a41 MD |
1910 | buf = stream->buf; |
1911 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1912 | client_cb = get_client_cb(buf, handle); |
1913 | if (!client_cb) | |
1914 | return -ENOSYS; | |
1915 | return client_cb->content_size(buf, handle, content_size); | |
1916 | } | |
1917 | ||
1918 | int ustctl_get_packet_size(struct ustctl_consumer_stream *stream, | |
1919 | uint64_t *packet_size) | |
1920 | { | |
1921 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1922 | struct lttng_ust_lib_ring_buffer *buf; |
1923 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1924 | |
1925 | if (!stream || !packet_size) | |
1926 | return -EINVAL; | |
e1919a41 MD |
1927 | buf = stream->buf; |
1928 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1929 | client_cb = get_client_cb(buf, handle); |
1930 | if (!client_cb) | |
1931 | return -ENOSYS; | |
1932 | return client_cb->packet_size(buf, handle, packet_size); | |
1933 | } | |
1934 | ||
1935 | int ustctl_get_stream_id(struct ustctl_consumer_stream *stream, | |
1936 | uint64_t *stream_id) | |
1937 | { | |
1938 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1939 | struct lttng_ust_lib_ring_buffer *buf; |
1940 | struct lttng_ust_shm_handle *handle; | |
b2f3252a JD |
1941 | |
1942 | if (!stream || !stream_id) | |
1943 | return -EINVAL; | |
e1919a41 MD |
1944 | buf = stream->buf; |
1945 | handle = stream->chan->chan->handle; | |
b2f3252a JD |
1946 | client_cb = get_client_cb(buf, handle); |
1947 | if (!client_cb) | |
1948 | return -ENOSYS; | |
1949 | return client_cb->stream_id(buf, handle, stream_id); | |
1950 | } | |
1951 | ||
fca361e8 JD |
1952 | int ustctl_get_current_timestamp(struct ustctl_consumer_stream *stream, |
1953 | uint64_t *ts) | |
1954 | { | |
1955 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
e1919a41 MD |
1956 | struct lttng_ust_lib_ring_buffer *buf; |
1957 | struct lttng_ust_shm_handle *handle; | |
fca361e8 JD |
1958 | |
1959 | if (!stream || !ts) | |
1960 | return -EINVAL; | |
e1919a41 MD |
1961 | buf = stream->buf; |
1962 | handle = stream->chan->chan->handle; | |
fca361e8 JD |
1963 | client_cb = get_client_cb(buf, handle); |
1964 | if (!client_cb || !client_cb->current_timestamp) | |
1965 | return -ENOSYS; | |
1966 | return client_cb->current_timestamp(buf, handle, ts); | |
1967 | } | |
1968 | ||
1ff31389 JD |
1969 | int ustctl_get_sequence_number(struct ustctl_consumer_stream *stream, |
1970 | uint64_t *seq) | |
1971 | { | |
1972 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1973 | struct lttng_ust_lib_ring_buffer *buf; | |
1974 | struct lttng_ust_shm_handle *handle; | |
1975 | ||
1976 | if (!stream || !seq) | |
1977 | return -EINVAL; | |
1978 | buf = stream->buf; | |
1979 | handle = stream->chan->chan->handle; | |
1980 | client_cb = get_client_cb(buf, handle); | |
1981 | if (!client_cb || !client_cb->sequence_number) | |
1982 | return -ENOSYS; | |
1983 | return client_cb->sequence_number(buf, handle, seq); | |
1984 | } | |
1985 | ||
45a00b05 JD |
1986 | int ustctl_get_instance_id(struct ustctl_consumer_stream *stream, |
1987 | uint64_t *id) | |
1988 | { | |
1989 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
1990 | struct lttng_ust_lib_ring_buffer *buf; | |
1991 | struct lttng_ust_shm_handle *handle; | |
1992 | ||
1993 | if (!stream || !id) | |
1994 | return -EINVAL; | |
1995 | buf = stream->buf; | |
1996 | handle = stream->chan->chan->handle; | |
1997 | client_cb = get_client_cb(buf, handle); | |
1998 | if (!client_cb) | |
1999 | return -ENOSYS; | |
2000 | return client_cb->instance_id(buf, handle, id); | |
2001 | } | |
2002 | ||
bd8c1787 | 2003 | #ifdef HAVE_PERF_EVENT |
57201bb3 MD |
2004 | |
2005 | int ustctl_has_perf_counters(void) | |
2006 | { | |
2007 | return 1; | |
2008 | } | |
2009 | ||
2010 | #else | |
2011 | ||
2012 | int ustctl_has_perf_counters(void) | |
2013 | { | |
2014 | return 0; | |
2015 | } | |
2016 | ||
2017 | #endif | |
2018 | ||
a834901f MD |
2019 | #ifdef __linux__ |
2020 | /* | |
2021 | * Override application pid/uid/gid with unix socket credentials. If | |
2022 | * the application announced a pid matching our view, it means it is | |
2023 | * within the same pid namespace, so expose the ppid provided by the | |
2024 | * application. | |
2025 | */ | |
2026 | static | |
2027 | int get_cred(int sock, | |
2028 | const struct ustctl_reg_msg *reg_msg, | |
2029 | uint32_t *pid, | |
2030 | uint32_t *ppid, | |
2031 | uint32_t *uid, | |
2032 | uint32_t *gid) | |
2033 | { | |
2034 | struct ucred ucred; | |
2035 | socklen_t ucred_len = sizeof(struct ucred); | |
2036 | int ret; | |
2037 | ||
2038 | ret = getsockopt(sock, SOL_SOCKET, SO_PEERCRED, &ucred, &ucred_len); | |
2039 | if (ret) { | |
2040 | return -LTTNG_UST_ERR_PEERCRED; | |
2041 | } | |
2042 | DBG("Unix socket peercred [ pid: %u, uid: %u, gid: %u ], " | |
2043 | "application registered claiming [ pid: %u, ppid: %u, uid: %u, gid: %u ]", | |
2044 | ucred.pid, ucred.uid, ucred.gid, | |
2045 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); | |
2046 | if (!ucred.pid) { | |
2047 | ERR("Unix socket credential pid=0. Refusing application in distinct, non-nested pid namespace."); | |
2048 | return -LTTNG_UST_ERR_PEERCRED_PID; | |
2049 | } | |
2050 | *pid = ucred.pid; | |
2051 | *uid = ucred.uid; | |
2052 | *gid = ucred.gid; | |
2053 | if (ucred.pid == reg_msg->pid) { | |
2054 | *ppid = reg_msg->ppid; | |
2055 | } else { | |
2056 | *ppid = 0; | |
2057 | } | |
2058 | return 0; | |
2059 | } | |
2060 | #elif defined(__FreeBSD__) | |
2061 | #include <sys/ucred.h> | |
e494a9cd | 2062 | #include <sys/un.h> |
a834901f MD |
2063 | |
2064 | /* | |
2065 | * Override application uid/gid with unix socket credentials. Use the | |
2066 | * first group of the cr_groups. | |
2067 | * Use the pid and ppid provided by the application on registration. | |
2068 | */ | |
2069 | static | |
2070 | int get_cred(int sock, | |
2071 | const struct ustctl_reg_msg *reg_msg, | |
2072 | uint32_t *pid, | |
2073 | uint32_t *ppid, | |
2074 | uint32_t *uid, | |
2075 | uint32_t *gid) | |
2076 | { | |
2077 | struct xucred xucred; | |
2078 | socklen_t xucred_len = sizeof(struct xucred); | |
2079 | int ret; | |
2080 | ||
2081 | ret = getsockopt(sock, SOL_SOCKET, LOCAL_PEERCRED, &xucred, &xucred_len); | |
2082 | if (ret) { | |
2083 | return -LTTNG_UST_ERR_PEERCRED; | |
2084 | } | |
2085 | if (xucred.cr_version != XUCRED_VERSION || xucred.cr_ngroups < 1) { | |
2086 | return -LTTNG_UST_ERR_PEERCRED; | |
2087 | } | |
2088 | DBG("Unix socket peercred [ uid: %u, gid: %u ], " | |
2089 | "application registered claiming [ pid: %d, ppid: %d, uid: %u, gid: %u ]", | |
e494a9cd | 2090 | xucred.cr_uid, xucred.cr_groups[0], |
a834901f MD |
2091 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); |
2092 | *pid = reg_msg->pid; | |
2093 | *ppid = reg_msg->ppid; | |
e494a9cd | 2094 | *uid = xucred.cr_uid; |
a834901f MD |
2095 | *gid = xucred.cr_groups[0]; |
2096 | return 0; | |
2097 | } | |
2098 | #else | |
2099 | #warning "Using insecure fallback: trusting user id provided by registered applications. Please consider implementing use of unix socket credentials on your platform." | |
2100 | static | |
2101 | int get_cred(int sock, | |
2102 | const struct ustctl_reg_msg *reg_msg, | |
2103 | uint32_t *pid, | |
2104 | uint32_t *ppid, | |
2105 | uint32_t *uid, | |
2106 | uint32_t *gid) | |
2107 | { | |
2108 | DBG("Application registered claiming [ pid: %u, ppid: %d, uid: %u, gid: %u ]", | |
2109 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); | |
2110 | *pid = reg_msg->pid; | |
2111 | *ppid = reg_msg->ppid; | |
2112 | *uid = reg_msg->uid; | |
2113 | *gid = reg_msg->gid; | |
2114 | return 0; | |
2115 | } | |
2116 | #endif | |
2117 | ||
32ce8569 MD |
2118 | /* |
2119 | * Returns 0 on success, negative error value on error. | |
2120 | */ | |
2121 | int ustctl_recv_reg_msg(int sock, | |
2122 | enum ustctl_socket_type *type, | |
2123 | uint32_t *major, | |
2124 | uint32_t *minor, | |
2125 | uint32_t *pid, | |
2126 | uint32_t *ppid, | |
2127 | uint32_t *uid, | |
2128 | uint32_t *gid, | |
2129 | uint32_t *bits_per_long, | |
2130 | uint32_t *uint8_t_alignment, | |
2131 | uint32_t *uint16_t_alignment, | |
2132 | uint32_t *uint32_t_alignment, | |
2133 | uint32_t *uint64_t_alignment, | |
2134 | uint32_t *long_alignment, | |
2135 | int *byte_order, | |
2136 | char *name) | |
2137 | { | |
2138 | ssize_t len; | |
2139 | struct ustctl_reg_msg reg_msg; | |
2140 | ||
2141 | len = ustcomm_recv_unix_sock(sock, ®_msg, sizeof(reg_msg)); | |
2142 | if (len > 0 && len != sizeof(reg_msg)) | |
2143 | return -EIO; | |
2144 | if (len == 0) | |
2145 | return -EPIPE; | |
2146 | if (len < 0) | |
2147 | return len; | |
2148 | ||
fd17d7ce | 2149 | if (reg_msg.magic == LTTNG_UST_ABI_COMM_MAGIC) { |
32ce8569 MD |
2150 | *byte_order = BYTE_ORDER == BIG_ENDIAN ? |
2151 | BIG_ENDIAN : LITTLE_ENDIAN; | |
fd17d7ce | 2152 | } else if (reg_msg.magic == bswap_32(LTTNG_UST_ABI_COMM_MAGIC)) { |
32ce8569 MD |
2153 | *byte_order = BYTE_ORDER == BIG_ENDIAN ? |
2154 | LITTLE_ENDIAN : BIG_ENDIAN; | |
2155 | } else { | |
2156 | return -LTTNG_UST_ERR_INVAL_MAGIC; | |
2157 | } | |
2158 | switch (reg_msg.socket_type) { | |
2159 | case 0: *type = USTCTL_SOCKET_CMD; | |
2160 | break; | |
2161 | case 1: *type = USTCTL_SOCKET_NOTIFY; | |
2162 | break; | |
2163 | default: | |
2164 | return -LTTNG_UST_ERR_INVAL_SOCKET_TYPE; | |
2165 | } | |
2166 | *major = reg_msg.major; | |
2167 | *minor = reg_msg.minor; | |
32ce8569 MD |
2168 | *bits_per_long = reg_msg.bits_per_long; |
2169 | *uint8_t_alignment = reg_msg.uint8_t_alignment; | |
2170 | *uint16_t_alignment = reg_msg.uint16_t_alignment; | |
2171 | *uint32_t_alignment = reg_msg.uint32_t_alignment; | |
2172 | *uint64_t_alignment = reg_msg.uint64_t_alignment; | |
2173 | *long_alignment = reg_msg.long_alignment; | |
2174 | memcpy(name, reg_msg.name, LTTNG_UST_ABI_PROCNAME_LEN); | |
6a359b8a MD |
2175 | if (reg_msg.major < LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE || |
2176 | reg_msg.major > LTTNG_UST_ABI_MAJOR_VERSION) { | |
32ce8569 MD |
2177 | return -LTTNG_UST_ERR_UNSUP_MAJOR; |
2178 | } | |
a834901f | 2179 | return get_cred(sock, ®_msg, pid, ppid, uid, gid); |
32ce8569 MD |
2180 | } |
2181 | ||
2182 | int ustctl_recv_notify(int sock, enum ustctl_notify_cmd *notify_cmd) | |
2183 | { | |
2184 | struct ustcomm_notify_hdr header; | |
2185 | ssize_t len; | |
2186 | ||
2187 | len = ustcomm_recv_unix_sock(sock, &header, sizeof(header)); | |
2188 | if (len > 0 && len != sizeof(header)) | |
2189 | return -EIO; | |
2190 | if (len == 0) | |
2191 | return -EPIPE; | |
2192 | if (len < 0) | |
2193 | return len; | |
2194 | switch (header.notify_cmd) { | |
2195 | case 0: | |
2196 | *notify_cmd = USTCTL_NOTIFY_CMD_EVENT; | |
2197 | break; | |
2198 | case 1: | |
2199 | *notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL; | |
2200 | break; | |
c785c634 MD |
2201 | case 2: |
2202 | *notify_cmd = USTCTL_NOTIFY_CMD_ENUM; | |
2203 | break; | |
32ce8569 MD |
2204 | default: |
2205 | return -EINVAL; | |
2206 | } | |
2207 | return 0; | |
2208 | } | |
2209 | ||
2210 | /* | |
2211 | * Returns 0 on success, negative error value on error. | |
2212 | */ | |
2213 | int ustctl_recv_register_event(int sock, | |
2214 | int *session_objd, | |
2215 | int *channel_objd, | |
2216 | char *event_name, | |
2217 | int *loglevel, | |
2218 | char **signature, | |
2219 | size_t *nr_fields, | |
2220 | struct ustctl_field **fields, | |
2221 | char **model_emf_uri) | |
2222 | { | |
2223 | ssize_t len; | |
2224 | struct ustcomm_notify_event_msg msg; | |
2225 | size_t signature_len, fields_len, model_emf_uri_len; | |
2226 | char *a_sign = NULL, *a_model_emf_uri = NULL; | |
2227 | struct ustctl_field *a_fields = NULL; | |
2228 | ||
2229 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2230 | if (len > 0 && len != sizeof(msg)) | |
2231 | return -EIO; | |
2232 | if (len == 0) | |
2233 | return -EPIPE; | |
2234 | if (len < 0) | |
2235 | return len; | |
2236 | ||
2237 | *session_objd = msg.session_objd; | |
2238 | *channel_objd = msg.channel_objd; | |
fd17d7ce MD |
2239 | strncpy(event_name, msg.event_name, LTTNG_UST_ABI_SYM_NAME_LEN); |
2240 | event_name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; | |
32ce8569 MD |
2241 | *loglevel = msg.loglevel; |
2242 | signature_len = msg.signature_len; | |
2243 | fields_len = msg.fields_len; | |
2244 | ||
2245 | if (fields_len % sizeof(*a_fields) != 0) { | |
2246 | return -EINVAL; | |
2247 | } | |
2248 | ||
2249 | model_emf_uri_len = msg.model_emf_uri_len; | |
2250 | ||
2251 | /* recv signature. contains at least \0. */ | |
2252 | a_sign = zmalloc(signature_len); | |
2253 | if (!a_sign) | |
2254 | return -ENOMEM; | |
2255 | len = ustcomm_recv_unix_sock(sock, a_sign, signature_len); | |
2256 | if (len > 0 && len != signature_len) { | |
2257 | len = -EIO; | |
2258 | goto signature_error; | |
2259 | } | |
2260 | if (len == 0) { | |
2261 | len = -EPIPE; | |
2262 | goto signature_error; | |
2263 | } | |
2264 | if (len < 0) { | |
2265 | goto signature_error; | |
2266 | } | |
2267 | /* Enforce end of string */ | |
111198c2 | 2268 | a_sign[signature_len - 1] = '\0'; |
32ce8569 MD |
2269 | |
2270 | /* recv fields */ | |
2271 | if (fields_len) { | |
2272 | a_fields = zmalloc(fields_len); | |
2273 | if (!a_fields) { | |
2274 | len = -ENOMEM; | |
2275 | goto signature_error; | |
2276 | } | |
2277 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2278 | if (len > 0 && len != fields_len) { | |
2279 | len = -EIO; | |
2280 | goto fields_error; | |
2281 | } | |
2282 | if (len == 0) { | |
2283 | len = -EPIPE; | |
2284 | goto fields_error; | |
2285 | } | |
2286 | if (len < 0) { | |
2287 | goto fields_error; | |
2288 | } | |
2289 | } | |
2290 | ||
2291 | if (model_emf_uri_len) { | |
2292 | /* recv model_emf_uri_len */ | |
2293 | a_model_emf_uri = zmalloc(model_emf_uri_len); | |
2294 | if (!a_model_emf_uri) { | |
2295 | len = -ENOMEM; | |
2296 | goto fields_error; | |
2297 | } | |
2298 | len = ustcomm_recv_unix_sock(sock, a_model_emf_uri, | |
2299 | model_emf_uri_len); | |
2300 | if (len > 0 && len != model_emf_uri_len) { | |
2301 | len = -EIO; | |
2302 | goto model_error; | |
2303 | } | |
2304 | if (len == 0) { | |
2305 | len = -EPIPE; | |
2306 | goto model_error; | |
2307 | } | |
2308 | if (len < 0) { | |
2309 | goto model_error; | |
2310 | } | |
2311 | /* Enforce end of string */ | |
2312 | a_model_emf_uri[model_emf_uri_len - 1] = '\0'; | |
2313 | } | |
2314 | ||
2315 | *signature = a_sign; | |
2316 | *nr_fields = fields_len / sizeof(*a_fields); | |
2317 | *fields = a_fields; | |
2318 | *model_emf_uri = a_model_emf_uri; | |
2319 | ||
2320 | return 0; | |
2321 | ||
2322 | model_error: | |
2323 | free(a_model_emf_uri); | |
2324 | fields_error: | |
2325 | free(a_fields); | |
2326 | signature_error: | |
2327 | free(a_sign); | |
2328 | return len; | |
2329 | } | |
2330 | ||
2331 | /* | |
2332 | * Returns 0 on success, negative error value on error. | |
2333 | */ | |
2334 | int ustctl_reply_register_event(int sock, | |
2335 | uint32_t id, | |
2336 | int ret_code) | |
2337 | { | |
2338 | ssize_t len; | |
2339 | struct { | |
2340 | struct ustcomm_notify_hdr header; | |
2341 | struct ustcomm_notify_event_reply r; | |
2342 | } reply; | |
2343 | ||
2344 | memset(&reply, 0, sizeof(reply)); | |
2345 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_EVENT; | |
2346 | reply.r.ret_code = ret_code; | |
2347 | reply.r.event_id = id; | |
2348 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2349 | if (len > 0 && len != sizeof(reply)) | |
2350 | return -EIO; | |
2351 | if (len < 0) | |
2352 | return len; | |
2353 | return 0; | |
2354 | } | |
2355 | ||
c785c634 MD |
2356 | /* |
2357 | * Returns 0 on success, negative UST or system error value on error. | |
2358 | */ | |
2359 | int ustctl_recv_register_enum(int sock, | |
2360 | int *session_objd, | |
2361 | char *enum_name, | |
2362 | struct ustctl_enum_entry **entries, | |
2363 | size_t *nr_entries) | |
2364 | { | |
2365 | ssize_t len; | |
2366 | struct ustcomm_notify_enum_msg msg; | |
2367 | size_t entries_len; | |
2368 | struct ustctl_enum_entry *a_entries = NULL; | |
2369 | ||
2370 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2371 | if (len > 0 && len != sizeof(msg)) | |
2372 | return -EIO; | |
2373 | if (len == 0) | |
2374 | return -EPIPE; | |
2375 | if (len < 0) | |
2376 | return len; | |
2377 | ||
2378 | *session_objd = msg.session_objd; | |
fd17d7ce MD |
2379 | strncpy(enum_name, msg.enum_name, LTTNG_UST_ABI_SYM_NAME_LEN); |
2380 | enum_name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; | |
c785c634 MD |
2381 | entries_len = msg.entries_len; |
2382 | ||
2383 | if (entries_len % sizeof(*a_entries) != 0) { | |
2384 | return -EINVAL; | |
2385 | } | |
2386 | ||
2387 | /* recv entries */ | |
2388 | if (entries_len) { | |
2389 | a_entries = zmalloc(entries_len); | |
2390 | if (!a_entries) | |
2391 | return -ENOMEM; | |
2392 | len = ustcomm_recv_unix_sock(sock, a_entries, entries_len); | |
2393 | if (len > 0 && len != entries_len) { | |
2394 | len = -EIO; | |
2395 | goto entries_error; | |
2396 | } | |
2397 | if (len == 0) { | |
2398 | len = -EPIPE; | |
2399 | goto entries_error; | |
2400 | } | |
2401 | if (len < 0) { | |
2402 | goto entries_error; | |
2403 | } | |
2404 | } | |
2405 | *nr_entries = entries_len / sizeof(*a_entries); | |
2406 | *entries = a_entries; | |
2407 | ||
2408 | return 0; | |
2409 | ||
2410 | entries_error: | |
2411 | free(a_entries); | |
2412 | return len; | |
2413 | } | |
2414 | ||
2415 | /* | |
2416 | * Returns 0 on success, negative error value on error. | |
2417 | */ | |
2418 | int ustctl_reply_register_enum(int sock, | |
2419 | uint64_t id, | |
2420 | int ret_code) | |
2421 | { | |
2422 | ssize_t len; | |
2423 | struct { | |
2424 | struct ustcomm_notify_hdr header; | |
2425 | struct ustcomm_notify_enum_reply r; | |
2426 | } reply; | |
2427 | ||
2428 | memset(&reply, 0, sizeof(reply)); | |
2429 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_ENUM; | |
2430 | reply.r.ret_code = ret_code; | |
2431 | reply.r.enum_id = id; | |
2432 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2433 | if (len > 0 && len != sizeof(reply)) | |
2434 | return -EIO; | |
2435 | if (len < 0) | |
2436 | return len; | |
2437 | return 0; | |
2438 | } | |
2439 | ||
32ce8569 MD |
2440 | /* |
2441 | * Returns 0 on success, negative UST or system error value on error. | |
2442 | */ | |
2443 | int ustctl_recv_register_channel(int sock, | |
2444 | int *session_objd, /* session descriptor (output) */ | |
2445 | int *channel_objd, /* channel descriptor (output) */ | |
2446 | size_t *nr_fields, | |
2447 | struct ustctl_field **fields) | |
2448 | { | |
2449 | ssize_t len; | |
2450 | struct ustcomm_notify_channel_msg msg; | |
2451 | size_t fields_len; | |
2452 | struct ustctl_field *a_fields; | |
2453 | ||
2454 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2455 | if (len > 0 && len != sizeof(msg)) | |
2456 | return -EIO; | |
2457 | if (len == 0) | |
2458 | return -EPIPE; | |
2459 | if (len < 0) | |
2460 | return len; | |
2461 | ||
2462 | *session_objd = msg.session_objd; | |
2463 | *channel_objd = msg.channel_objd; | |
2464 | fields_len = msg.ctx_fields_len; | |
2465 | ||
2466 | if (fields_len % sizeof(*a_fields) != 0) { | |
2467 | return -EINVAL; | |
2468 | } | |
2469 | ||
2470 | /* recv fields */ | |
2471 | if (fields_len) { | |
2472 | a_fields = zmalloc(fields_len); | |
2473 | if (!a_fields) { | |
2474 | len = -ENOMEM; | |
2475 | goto alloc_error; | |
2476 | } | |
2477 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2478 | if (len > 0 && len != fields_len) { | |
2479 | len = -EIO; | |
2480 | goto fields_error; | |
2481 | } | |
2482 | if (len == 0) { | |
2483 | len = -EPIPE; | |
2484 | goto fields_error; | |
2485 | } | |
2486 | if (len < 0) { | |
2487 | goto fields_error; | |
2488 | } | |
2489 | *fields = a_fields; | |
2490 | } else { | |
2491 | *fields = NULL; | |
2492 | } | |
2493 | *nr_fields = fields_len / sizeof(*a_fields); | |
2494 | return 0; | |
2495 | ||
2496 | fields_error: | |
2497 | free(a_fields); | |
2498 | alloc_error: | |
2499 | return len; | |
2500 | } | |
2501 | ||
2502 | /* | |
2503 | * Returns 0 on success, negative error value on error. | |
2504 | */ | |
2505 | int ustctl_reply_register_channel(int sock, | |
2506 | uint32_t chan_id, | |
2507 | enum ustctl_channel_header header_type, | |
2508 | int ret_code) | |
2509 | { | |
2510 | ssize_t len; | |
2511 | struct { | |
2512 | struct ustcomm_notify_hdr header; | |
2513 | struct ustcomm_notify_channel_reply r; | |
2514 | } reply; | |
2515 | ||
2516 | memset(&reply, 0, sizeof(reply)); | |
2517 | reply.header.notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL; | |
2518 | reply.r.ret_code = ret_code; | |
2519 | reply.r.chan_id = chan_id; | |
2520 | switch (header_type) { | |
2521 | case USTCTL_CHANNEL_HEADER_COMPACT: | |
2522 | reply.r.header_type = 1; | |
2523 | break; | |
2524 | case USTCTL_CHANNEL_HEADER_LARGE: | |
2525 | reply.r.header_type = 2; | |
2526 | break; | |
2527 | default: | |
2528 | reply.r.header_type = 0; | |
2529 | break; | |
2530 | } | |
2531 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2532 | if (len > 0 && len != sizeof(reply)) | |
2533 | return -EIO; | |
2534 | if (len < 0) | |
2535 | return len; | |
2536 | return 0; | |
2537 | } | |
2538 | ||
f53329f3 JD |
2539 | /* Regenerate the statedump. */ |
2540 | int ustctl_regenerate_statedump(int sock, int handle) | |
2541 | { | |
2542 | struct ustcomm_ust_msg lum; | |
2543 | struct ustcomm_ust_reply lur; | |
2544 | int ret; | |
2545 | ||
2546 | memset(&lum, 0, sizeof(lum)); | |
2547 | lum.handle = handle; | |
fd17d7ce | 2548 | lum.cmd = LTTNG_UST_ABI_SESSION_STATEDUMP; |
f53329f3 JD |
2549 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
2550 | if (ret) | |
2551 | return ret; | |
2552 | DBG("Regenerated statedump for handle %u", handle); | |
2553 | return 0; | |
2554 | } | |
2555 | ||
ebabbf58 MD |
2556 | /* counter operations */ |
2557 | ||
2558 | int ustctl_get_nr_cpu_per_counter(void) | |
2559 | { | |
2560 | return lttng_counter_num_possible_cpus(); | |
2561 | } | |
2562 | ||
2563 | struct ustctl_daemon_counter * | |
2564 | ustctl_create_counter(size_t nr_dimensions, | |
2565 | const struct ustctl_counter_dimension *dimensions, | |
2566 | int64_t global_sum_step, | |
2567 | int global_counter_fd, | |
2568 | int nr_counter_cpu_fds, | |
2569 | const int *counter_cpu_fds, | |
2570 | enum ustctl_counter_bitness bitness, | |
2571 | enum ustctl_counter_arithmetic arithmetic, | |
81bc4972 MD |
2572 | uint32_t alloc_flags, |
2573 | bool coalesce_hits) | |
ebabbf58 MD |
2574 | { |
2575 | const char *transport_name; | |
2576 | struct ustctl_daemon_counter *counter; | |
2577 | struct lttng_counter_transport *transport; | |
2578 | struct lttng_counter_dimension ust_dim[LTTNG_COUNTER_DIMENSION_MAX]; | |
2579 | size_t i; | |
2580 | ||
2581 | if (nr_dimensions > LTTNG_COUNTER_DIMENSION_MAX) | |
2582 | return NULL; | |
2583 | /* Currently, only per-cpu allocation is supported. */ | |
2584 | switch (alloc_flags) { | |
2585 | case USTCTL_COUNTER_ALLOC_PER_CPU: | |
2586 | break; | |
2587 | ||
2588 | case USTCTL_COUNTER_ALLOC_PER_CPU | USTCTL_COUNTER_ALLOC_GLOBAL: | |
2589 | case USTCTL_COUNTER_ALLOC_GLOBAL: | |
2590 | default: | |
2591 | return NULL; | |
2592 | } | |
2593 | switch (bitness) { | |
2594 | case USTCTL_COUNTER_BITNESS_32: | |
2595 | switch (arithmetic) { | |
2596 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2597 | transport_name = "counter-per-cpu-32-modular"; | |
2598 | break; | |
2599 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2600 | transport_name = "counter-per-cpu-32-saturation"; | |
2601 | break; | |
2602 | default: | |
2603 | return NULL; | |
2604 | } | |
2605 | break; | |
2606 | case USTCTL_COUNTER_BITNESS_64: | |
2607 | switch (arithmetic) { | |
2608 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
2609 | transport_name = "counter-per-cpu-64-modular"; | |
2610 | break; | |
2611 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
2612 | transport_name = "counter-per-cpu-64-saturation"; | |
2613 | break; | |
2614 | default: | |
2615 | return NULL; | |
2616 | } | |
2617 | break; | |
2618 | default: | |
2619 | return NULL; | |
2620 | } | |
2621 | ||
2622 | transport = lttng_counter_transport_find(transport_name); | |
2623 | if (!transport) { | |
2624 | DBG("LTTng transport %s not found\n", | |
2625 | transport_name); | |
2626 | return NULL; | |
2627 | } | |
2628 | ||
2629 | counter = zmalloc(sizeof(*counter)); | |
2630 | if (!counter) | |
2631 | return NULL; | |
2632 | counter->attr = zmalloc(sizeof(*counter->attr)); | |
2633 | if (!counter->attr) | |
2634 | goto free_counter; | |
2635 | counter->attr->bitness = bitness; | |
2636 | counter->attr->arithmetic = arithmetic; | |
2637 | counter->attr->nr_dimensions = nr_dimensions; | |
2638 | counter->attr->global_sum_step = global_sum_step; | |
81bc4972 | 2639 | counter->attr->coalesce_hits = coalesce_hits; |
ebabbf58 MD |
2640 | for (i = 0; i < nr_dimensions; i++) |
2641 | counter->attr->dimensions[i] = dimensions[i]; | |
2642 | ||
2643 | for (i = 0; i < nr_dimensions; i++) { | |
2644 | ust_dim[i].size = dimensions[i].size; | |
2645 | ust_dim[i].underflow_index = dimensions[i].underflow_index; | |
2646 | ust_dim[i].overflow_index = dimensions[i].overflow_index; | |
2647 | ust_dim[i].has_underflow = dimensions[i].has_underflow; | |
2648 | ust_dim[i].has_overflow = dimensions[i].has_overflow; | |
2649 | } | |
2650 | counter->counter = transport->ops.counter_create(nr_dimensions, | |
2651 | ust_dim, global_sum_step, global_counter_fd, | |
2652 | nr_counter_cpu_fds, counter_cpu_fds, true); | |
2653 | if (!counter->counter) | |
2654 | goto free_attr; | |
2655 | counter->ops = &transport->ops; | |
2656 | return counter; | |
2657 | ||
2658 | free_attr: | |
2659 | free(counter->attr); | |
2660 | free_counter: | |
2661 | free(counter); | |
2662 | return NULL; | |
2663 | } | |
2664 | ||
2665 | int ustctl_create_counter_data(struct ustctl_daemon_counter *counter, | |
fd17d7ce | 2666 | struct lttng_ust_abi_object_data **_counter_data) |
ebabbf58 | 2667 | { |
fd17d7ce MD |
2668 | struct lttng_ust_abi_object_data *counter_data; |
2669 | struct lttng_ust_abi_counter_conf counter_conf = {0}; | |
ebabbf58 MD |
2670 | size_t i; |
2671 | int ret; | |
2672 | ||
2673 | switch (counter->attr->arithmetic) { | |
2674 | case USTCTL_COUNTER_ARITHMETIC_MODULAR: | |
fd17d7ce | 2675 | counter_conf.arithmetic = LTTNG_UST_ABI_COUNTER_ARITHMETIC_MODULAR; |
ebabbf58 MD |
2676 | break; |
2677 | case USTCTL_COUNTER_ARITHMETIC_SATURATION: | |
fd17d7ce | 2678 | counter_conf.arithmetic = LTTNG_UST_ABI_COUNTER_ARITHMETIC_SATURATION; |
ebabbf58 MD |
2679 | break; |
2680 | default: | |
2681 | return -EINVAL; | |
2682 | } | |
2683 | switch (counter->attr->bitness) { | |
2684 | case USTCTL_COUNTER_BITNESS_32: | |
fd17d7ce | 2685 | counter_conf.bitness = LTTNG_UST_ABI_COUNTER_BITNESS_32; |
ebabbf58 MD |
2686 | break; |
2687 | case USTCTL_COUNTER_BITNESS_64: | |
fd17d7ce | 2688 | counter_conf.bitness = LTTNG_UST_ABI_COUNTER_BITNESS_64; |
ebabbf58 MD |
2689 | break; |
2690 | default: | |
2691 | return -EINVAL; | |
2692 | } | |
2693 | counter_conf.number_dimensions = counter->attr->nr_dimensions; | |
2694 | counter_conf.global_sum_step = counter->attr->global_sum_step; | |
81bc4972 | 2695 | counter_conf.coalesce_hits = counter->attr->coalesce_hits; |
ebabbf58 MD |
2696 | for (i = 0; i < counter->attr->nr_dimensions; i++) { |
2697 | counter_conf.dimensions[i].size = counter->attr->dimensions[i].size; | |
2698 | counter_conf.dimensions[i].underflow_index = counter->attr->dimensions[i].underflow_index; | |
2699 | counter_conf.dimensions[i].overflow_index = counter->attr->dimensions[i].overflow_index; | |
2700 | counter_conf.dimensions[i].has_underflow = counter->attr->dimensions[i].has_underflow; | |
2701 | counter_conf.dimensions[i].has_overflow = counter->attr->dimensions[i].has_overflow; | |
2702 | } | |
2703 | ||
2704 | counter_data = zmalloc(sizeof(*counter_data)); | |
2705 | if (!counter_data) { | |
2706 | ret = -ENOMEM; | |
2707 | goto error_alloc; | |
2708 | } | |
fd17d7ce | 2709 | counter_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER; |
ebabbf58 MD |
2710 | counter_data->handle = -1; |
2711 | ||
2712 | counter_data->size = sizeof(counter_conf); | |
2713 | counter_data->u.counter.data = zmalloc(sizeof(counter_conf)); | |
2714 | if (!counter_data->u.counter.data) { | |
2715 | ret = -ENOMEM; | |
2716 | goto error_alloc_data; | |
2717 | } | |
2718 | ||
2719 | memcpy(counter_data->u.counter.data, &counter_conf, sizeof(counter_conf)); | |
2720 | *_counter_data = counter_data; | |
2721 | ||
2722 | return 0; | |
2723 | ||
2724 | error_alloc_data: | |
2725 | free(counter_data); | |
2726 | error_alloc: | |
2727 | return ret; | |
2728 | } | |
2729 | ||
2730 | int ustctl_create_counter_global_data(struct ustctl_daemon_counter *counter, | |
fd17d7ce | 2731 | struct lttng_ust_abi_object_data **_counter_global_data) |
ebabbf58 | 2732 | { |
fd17d7ce | 2733 | struct lttng_ust_abi_object_data *counter_global_data; |
ebabbf58 MD |
2734 | int ret, fd; |
2735 | size_t len; | |
2736 | ||
2737 | if (lttng_counter_get_global_shm(counter->counter, &fd, &len)) | |
2738 | return -EINVAL; | |
2739 | counter_global_data = zmalloc(sizeof(*counter_global_data)); | |
2740 | if (!counter_global_data) { | |
2741 | ret = -ENOMEM; | |
2742 | goto error_alloc; | |
2743 | } | |
fd17d7ce | 2744 | counter_global_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL; |
ebabbf58 MD |
2745 | counter_global_data->handle = -1; |
2746 | counter_global_data->size = len; | |
2747 | counter_global_data->u.counter_global.shm_fd = fd; | |
2748 | *_counter_global_data = counter_global_data; | |
2749 | return 0; | |
2750 | ||
2751 | error_alloc: | |
2752 | return ret; | |
2753 | } | |
2754 | ||
2755 | int ustctl_create_counter_cpu_data(struct ustctl_daemon_counter *counter, int cpu, | |
fd17d7ce | 2756 | struct lttng_ust_abi_object_data **_counter_cpu_data) |
ebabbf58 | 2757 | { |
fd17d7ce | 2758 | struct lttng_ust_abi_object_data *counter_cpu_data; |
ebabbf58 MD |
2759 | int ret, fd; |
2760 | size_t len; | |
2761 | ||
2762 | if (lttng_counter_get_cpu_shm(counter->counter, cpu, &fd, &len)) | |
2763 | return -EINVAL; | |
2764 | counter_cpu_data = zmalloc(sizeof(*counter_cpu_data)); | |
2765 | if (!counter_cpu_data) { | |
2766 | ret = -ENOMEM; | |
2767 | goto error_alloc; | |
2768 | } | |
fd17d7ce | 2769 | counter_cpu_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU; |
ebabbf58 MD |
2770 | counter_cpu_data->handle = -1; |
2771 | counter_cpu_data->size = len; | |
2772 | counter_cpu_data->u.counter_cpu.shm_fd = fd; | |
2773 | counter_cpu_data->u.counter_cpu.cpu_nr = cpu; | |
2774 | *_counter_cpu_data = counter_cpu_data; | |
2775 | return 0; | |
2776 | ||
2777 | error_alloc: | |
2778 | return ret; | |
2779 | } | |
2780 | ||
2781 | void ustctl_destroy_counter(struct ustctl_daemon_counter *counter) | |
2782 | { | |
2783 | counter->ops->counter_destroy(counter->counter); | |
2784 | free(counter->attr); | |
2785 | free(counter); | |
2786 | } | |
2787 | ||
2788 | int ustctl_send_counter_data_to_ust(int sock, int parent_handle, | |
fd17d7ce | 2789 | struct lttng_ust_abi_object_data *counter_data) |
ebabbf58 MD |
2790 | { |
2791 | struct ustcomm_ust_msg lum; | |
2792 | struct ustcomm_ust_reply lur; | |
2793 | int ret; | |
2794 | size_t size; | |
2795 | ssize_t len; | |
2796 | ||
2797 | if (!counter_data) | |
2798 | return -EINVAL; | |
2799 | ||
2800 | size = counter_data->size; | |
2801 | memset(&lum, 0, sizeof(lum)); | |
2802 | lum.handle = parent_handle; | |
fd17d7ce | 2803 | lum.cmd = LTTNG_UST_ABI_COUNTER; |
ebabbf58 MD |
2804 | lum.u.counter.len = size; |
2805 | ret = ustcomm_send_app_msg(sock, &lum); | |
2806 | if (ret) | |
2807 | return ret; | |
2808 | ||
2809 | /* Send counter data */ | |
2810 | len = ustcomm_send_unix_sock(sock, counter_data->u.counter.data, size); | |
2811 | if (len != size) { | |
2812 | if (len < 0) | |
2813 | return len; | |
2814 | else | |
2815 | return -EIO; | |
2816 | } | |
2817 | ||
2818 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2819 | if (!ret) { | |
2820 | counter_data->handle = lur.ret_val; | |
2821 | } | |
2822 | return ret; | |
2823 | } | |
2824 | ||
2825 | int ustctl_send_counter_global_data_to_ust(int sock, | |
fd17d7ce MD |
2826 | struct lttng_ust_abi_object_data *counter_data, |
2827 | struct lttng_ust_abi_object_data *counter_global_data) | |
ebabbf58 MD |
2828 | { |
2829 | struct ustcomm_ust_msg lum; | |
2830 | struct ustcomm_ust_reply lur; | |
2831 | int ret, shm_fd[1]; | |
2832 | size_t size; | |
2833 | ssize_t len; | |
2834 | ||
2835 | if (!counter_data || !counter_global_data) | |
2836 | return -EINVAL; | |
2837 | ||
2838 | size = counter_global_data->size; | |
2839 | memset(&lum, 0, sizeof(lum)); | |
2840 | lum.handle = counter_data->handle; /* parent handle */ | |
fd17d7ce | 2841 | lum.cmd = LTTNG_UST_ABI_COUNTER_GLOBAL; |
ebabbf58 MD |
2842 | lum.u.counter_global.len = size; |
2843 | ret = ustcomm_send_app_msg(sock, &lum); | |
2844 | if (ret) | |
2845 | return ret; | |
2846 | ||
2847 | shm_fd[0] = counter_global_data->u.counter_global.shm_fd; | |
2848 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
2849 | if (len <= 0) { | |
2850 | if (len < 0) | |
2851 | return len; | |
2852 | else | |
2853 | return -EIO; | |
2854 | } | |
2855 | ||
2856 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2857 | if (!ret) { | |
2858 | counter_global_data->handle = lur.ret_val; | |
2859 | } | |
2860 | return ret; | |
2861 | } | |
2862 | ||
2863 | int ustctl_send_counter_cpu_data_to_ust(int sock, | |
fd17d7ce MD |
2864 | struct lttng_ust_abi_object_data *counter_data, |
2865 | struct lttng_ust_abi_object_data *counter_cpu_data) | |
ebabbf58 MD |
2866 | { |
2867 | struct ustcomm_ust_msg lum; | |
2868 | struct ustcomm_ust_reply lur; | |
2869 | int ret, shm_fd[1]; | |
2870 | size_t size; | |
2871 | ssize_t len; | |
2872 | ||
2873 | if (!counter_data || !counter_cpu_data) | |
2874 | return -EINVAL; | |
2875 | ||
2876 | size = counter_cpu_data->size; | |
2877 | memset(&lum, 0, sizeof(lum)); | |
2878 | lum.handle = counter_data->handle; /* parent handle */ | |
fd17d7ce | 2879 | lum.cmd = LTTNG_UST_ABI_COUNTER_CPU; |
ebabbf58 MD |
2880 | lum.u.counter_cpu.len = size; |
2881 | lum.u.counter_cpu.cpu_nr = counter_cpu_data->u.counter_cpu.cpu_nr; | |
2882 | ret = ustcomm_send_app_msg(sock, &lum); | |
2883 | if (ret) | |
2884 | return ret; | |
2885 | ||
2886 | shm_fd[0] = counter_cpu_data->u.counter_global.shm_fd; | |
2887 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
2888 | if (len <= 0) { | |
2889 | if (len < 0) | |
2890 | return len; | |
2891 | else | |
2892 | return -EIO; | |
2893 | } | |
2894 | ||
2895 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
2896 | if (!ret) { | |
2897 | counter_cpu_data->handle = lur.ret_val; | |
2898 | } | |
2899 | return ret; | |
2900 | } | |
2901 | ||
2902 | int ustctl_counter_read(struct ustctl_daemon_counter *counter, | |
2903 | const size_t *dimension_indexes, | |
2904 | int cpu, int64_t *value, | |
2905 | bool *overflow, bool *underflow) | |
2906 | { | |
2907 | return counter->ops->counter_read(counter->counter, dimension_indexes, cpu, | |
2908 | value, overflow, underflow); | |
2909 | } | |
2910 | ||
2911 | int ustctl_counter_aggregate(struct ustctl_daemon_counter *counter, | |
2912 | const size_t *dimension_indexes, | |
2913 | int64_t *value, | |
2914 | bool *overflow, bool *underflow) | |
2915 | { | |
2916 | return counter->ops->counter_aggregate(counter->counter, dimension_indexes, | |
2917 | value, overflow, underflow); | |
2918 | } | |
2919 | ||
2920 | int ustctl_counter_clear(struct ustctl_daemon_counter *counter, | |
2921 | const size_t *dimension_indexes) | |
2922 | { | |
2923 | return counter->ops->counter_clear(counter->counter, dimension_indexes); | |
2924 | } | |
2925 | ||
74d81a6c MD |
2926 | static __attribute__((constructor)) |
2927 | void ustctl_init(void) | |
2928 | { | |
2b6f4374 MJ |
2929 | ust_err_init(); |
2930 | lttng_ust_getenv_init(); /* Needs ust_err_init() to be completed. */ | |
f9364363 | 2931 | lttng_ust_clock_init(); |
74d81a6c MD |
2932 | lttng_ring_buffer_metadata_client_init(); |
2933 | lttng_ring_buffer_client_overwrite_init(); | |
34a91bdb | 2934 | lttng_ring_buffer_client_overwrite_rt_init(); |
74d81a6c | 2935 | lttng_ring_buffer_client_discard_init(); |
34a91bdb | 2936 | lttng_ring_buffer_client_discard_rt_init(); |
ebabbf58 MD |
2937 | lttng_counter_client_percpu_32_modular_init(); |
2938 | lttng_counter_client_percpu_64_modular_init(); | |
03d2d293 | 2939 | lib_ringbuffer_signal_init(); |
74d81a6c MD |
2940 | } |
2941 | ||
2942 | static __attribute__((destructor)) | |
2943 | void ustctl_exit(void) | |
2944 | { | |
34a91bdb | 2945 | lttng_ring_buffer_client_discard_rt_exit(); |
74d81a6c | 2946 | lttng_ring_buffer_client_discard_exit(); |
34a91bdb | 2947 | lttng_ring_buffer_client_overwrite_rt_exit(); |
74d81a6c MD |
2948 | lttng_ring_buffer_client_overwrite_exit(); |
2949 | lttng_ring_buffer_metadata_client_exit(); | |
ebabbf58 MD |
2950 | lttng_counter_client_percpu_32_modular_exit(); |
2951 | lttng_counter_client_percpu_64_modular_exit(); | |
57773204 | 2952 | } |