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> |
fca97dfd | 19 | #include <lttng/ust-common.h> |
63b3205f MD |
20 | #include <lttng/ust-sigbus.h> |
21 | #include <urcu/rculist.h> | |
bb7ad29d | 22 | |
9d315d6d MJ |
23 | #include "common/logging.h" |
24 | #include "common/ustcomm.h" | |
25 | #include "common/macros.h" | |
26 | #include "common/align.h" | |
57773204 | 27 | |
e4db8f98 MJ |
28 | #include "common/ringbuffer/backend.h" |
29 | #include "common/ringbuffer/frontend.h" | |
36c52fff | 30 | #include "common/events.h" |
6bd9392e | 31 | #include "common/wait.h" |
8cd08025 | 32 | #include "common/ringbuffer-clients/clients.h" |
910dcd72 | 33 | #include "common/getenv.h" |
8cd08025 MJ |
34 | #include "common/tracer.h" |
35 | #include "common/counter-clients/clients.h" | |
c80497fe | 36 | |
74cc1f59 | 37 | #include "common/smp.h" |
cdff92e0 | 38 | #include "common/counter/counter.h" |
ebabbf58 | 39 | |
c9023c93 MD |
40 | /* |
41 | * Number of milliseconds to retry before failing metadata writes on | |
42 | * buffer full condition. (10 seconds) | |
43 | */ | |
44 | #define LTTNG_METADATA_TIMEOUT_MSEC 10000 | |
57773204 | 45 | |
74d81a6c MD |
46 | /* |
47 | * Channel representation within consumer. | |
48 | */ | |
249cffb5 | 49 | struct lttng_ust_ctl_consumer_channel { |
e7bc0ef6 | 50 | struct lttng_ust_channel_buffer *chan; /* lttng channel buffers */ |
6b120308 | 51 | |
74d81a6c | 52 | /* initial attributes */ |
249cffb5 | 53 | struct lttng_ust_ctl_consumer_channel_attr attr; |
ff0f5728 MD |
54 | int wait_fd; /* monitor close() */ |
55 | int wakeup_fd; /* monitor close() */ | |
74d81a6c MD |
56 | }; |
57 | ||
58 | /* | |
59 | * Stream representation within consumer. | |
60 | */ | |
249cffb5 | 61 | struct lttng_ust_ctl_consumer_stream { |
b5457df5 | 62 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 63 | struct lttng_ust_ctl_consumer_channel *chan; |
74d81a6c MD |
64 | int shm_fd, wait_fd, wakeup_fd; |
65 | int cpu; | |
66 | uint64_t memory_map_size; | |
63b3205f | 67 | void *memory_map_addr; |
74d81a6c MD |
68 | }; |
69 | ||
249cffb5 MJ |
70 | #define LTTNG_UST_CTL_COUNTER_ATTR_DIMENSION_MAX 8 |
71 | struct lttng_ust_ctl_counter_attr { | |
72 | enum lttng_ust_ctl_counter_arithmetic arithmetic; | |
73 | enum lttng_ust_ctl_counter_bitness bitness; | |
ebabbf58 MD |
74 | uint32_t nr_dimensions; |
75 | int64_t global_sum_step; | |
249cffb5 | 76 | struct lttng_ust_ctl_counter_dimension dimensions[LTTNG_UST_CTL_COUNTER_ATTR_DIMENSION_MAX]; |
81bc4972 | 77 | bool coalesce_hits; |
ebabbf58 MD |
78 | }; |
79 | ||
80 | /* | |
81 | * Counter representation within daemon. | |
82 | */ | |
249cffb5 | 83 | struct lttng_ust_ctl_daemon_counter { |
ebabbf58 MD |
84 | struct lib_counter *counter; |
85 | const struct lttng_counter_ops *ops; | |
249cffb5 | 86 | struct lttng_ust_ctl_counter_attr *attr; /* initial attributes */ |
ebabbf58 MD |
87 | }; |
88 | ||
63b3205f MD |
89 | /* |
90 | * Evaluates to false if transaction begins, true if it has failed due to SIGBUS. | |
91 | * The entire transaction must complete before the current function returns. | |
92 | * A transaction can contain 0 or more tracked ranges as sigbus begin/end pairs. | |
93 | */ | |
94 | #define sigbus_begin() \ | |
95 | ({ \ | |
96 | assert(!lttng_ust_sigbus_state.jmp_ready); \ | |
97 | if (!lttng_ust_sigbus_state.head.next) { \ | |
98 | /* \ | |
99 | * Lazy init because static list initialisation is \ | |
100 | * problematic for TLS variable. \ | |
101 | */ \ | |
102 | CDS_INIT_LIST_HEAD(<tng_ust_sigbus_state.head); \ | |
103 | } \ | |
104 | if (sigsetjmp(lttng_ust_sigbus_state.sj_env, 1)) { \ | |
105 | /* SIGBUS. */ \ | |
106 | CMM_STORE_SHARED(lttng_ust_sigbus_state.jmp_ready, 0); \ | |
107 | true; \ | |
108 | } \ | |
109 | cmm_barrier(); \ | |
110 | CMM_STORE_SHARED(lttng_ust_sigbus_state.jmp_ready, 1); \ | |
111 | false; \ | |
112 | }) | |
113 | ||
114 | static void sigbus_end(void) | |
115 | { | |
116 | assert(lttng_ust_sigbus_state.jmp_ready); | |
117 | cmm_barrier(); | |
118 | CMM_STORE_SHARED(lttng_ust_sigbus_state.jmp_ready, 0); | |
119 | } | |
120 | ||
121 | static | |
122 | void lttng_ust_sigbus_add_range(struct lttng_ust_sigbus_range *range, void *start, size_t len) | |
123 | { | |
124 | range->start = start; | |
125 | range->end = (char *)start + len; | |
126 | cds_list_add_rcu(&range->node, <tng_ust_sigbus_state.head); | |
127 | cmm_barrier(); | |
128 | } | |
129 | ||
130 | static | |
131 | void lttng_ust_sigbus_del_range(struct lttng_ust_sigbus_range *range) | |
132 | { | |
133 | cmm_barrier(); | |
134 | cds_list_del_rcu(&range->node); | |
135 | } | |
136 | ||
137 | void lttng_ust_ctl_sigbus_handle(void *addr) | |
138 | { | |
139 | struct lttng_ust_sigbus_range *range; | |
140 | ||
141 | if (!CMM_LOAD_SHARED(lttng_ust_sigbus_state.jmp_ready)) | |
142 | return; | |
143 | cds_list_for_each_entry_rcu(range, <tng_ust_sigbus_state.head, node) { | |
144 | if (addr < range->start || addr >= range->end) | |
145 | continue; | |
146 | siglongjmp(lttng_ust_sigbus_state.sj_env, 1); | |
147 | } | |
148 | } | |
149 | ||
249cffb5 | 150 | int lttng_ust_ctl_release_handle(int sock, int handle) |
2be0e72c MD |
151 | { |
152 | struct ustcomm_ust_msg lum; | |
153 | struct ustcomm_ust_reply lur; | |
2be0e72c | 154 | |
74d81a6c MD |
155 | if (sock < 0 || handle < 0) |
156 | return 0; | |
157 | memset(&lum, 0, sizeof(lum)); | |
158 | lum.handle = handle; | |
fd17d7ce | 159 | lum.cmd = LTTNG_UST_ABI_RELEASE; |
74d81a6c | 160 | return ustcomm_send_app_cmd(sock, &lum, &lur); |
2be0e72c | 161 | } |
74d81a6c | 162 | |
12388166 MD |
163 | /* |
164 | * If sock is negative, it means we don't have to notify the other side | |
165 | * (e.g. application has already vanished). | |
166 | */ | |
249cffb5 | 167 | int lttng_ust_ctl_release_object(int sock, struct lttng_ust_abi_object_data *data) |
57773204 | 168 | { |
57773204 MD |
169 | int ret; |
170 | ||
9bfc503d MD |
171 | if (!data) |
172 | return -EINVAL; | |
173 | ||
74d81a6c | 174 | switch (data->type) { |
fd17d7ce | 175 | case LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL: |
ff0f5728 MD |
176 | if (data->u.channel.wakeup_fd >= 0) { |
177 | ret = close(data->u.channel.wakeup_fd); | |
178 | if (ret < 0) { | |
179 | ret = -errno; | |
180 | return ret; | |
181 | } | |
dd6c697c | 182 | data->u.channel.wakeup_fd = -1; |
ff0f5728 | 183 | } |
74d81a6c | 184 | free(data->u.channel.data); |
dd6c697c | 185 | data->u.channel.data = NULL; |
74d81a6c | 186 | break; |
fd17d7ce | 187 | case LTTNG_UST_ABI_OBJECT_TYPE_STREAM: |
74d81a6c MD |
188 | if (data->u.stream.shm_fd >= 0) { |
189 | ret = close(data->u.stream.shm_fd); | |
190 | if (ret < 0) { | |
191 | ret = -errno; | |
192 | return ret; | |
193 | } | |
dd6c697c | 194 | data->u.stream.shm_fd = -1; |
d26228ae | 195 | } |
74d81a6c MD |
196 | if (data->u.stream.wakeup_fd >= 0) { |
197 | ret = close(data->u.stream.wakeup_fd); | |
198 | if (ret < 0) { | |
199 | ret = -errno; | |
200 | return ret; | |
201 | } | |
dd6c697c | 202 | data->u.stream.wakeup_fd = -1; |
d26228ae | 203 | } |
74d81a6c | 204 | break; |
fd17d7ce MD |
205 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT: |
206 | case LTTNG_UST_ABI_OBJECT_TYPE_CONTEXT: | |
207 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER_GROUP: | |
208 | case LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER: | |
32ce8569 | 209 | break; |
fd17d7ce | 210 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER: |
ebabbf58 MD |
211 | free(data->u.counter.data); |
212 | data->u.counter.data = NULL; | |
213 | break; | |
fd17d7ce | 214 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL: |
ebabbf58 MD |
215 | if (data->u.counter_global.shm_fd >= 0) { |
216 | ret = close(data->u.counter_global.shm_fd); | |
217 | if (ret < 0) { | |
218 | ret = -errno; | |
219 | return ret; | |
220 | } | |
221 | data->u.counter_global.shm_fd = -1; | |
222 | } | |
223 | break; | |
fd17d7ce | 224 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU: |
ebabbf58 MD |
225 | if (data->u.counter_cpu.shm_fd >= 0) { |
226 | ret = close(data->u.counter_cpu.shm_fd); | |
227 | if (ret < 0) { | |
228 | ret = -errno; | |
229 | return ret; | |
230 | } | |
231 | data->u.counter_cpu.shm_fd = -1; | |
232 | } | |
233 | break; | |
74d81a6c MD |
234 | default: |
235 | assert(0); | |
d26228ae | 236 | } |
249cffb5 | 237 | return lttng_ust_ctl_release_handle(sock, data->handle); |
57773204 MD |
238 | } |
239 | ||
1c5e467e MD |
240 | /* |
241 | * Send registration done packet to the application. | |
242 | */ | |
249cffb5 | 243 | int lttng_ust_ctl_register_done(int sock) |
1c5e467e MD |
244 | { |
245 | struct ustcomm_ust_msg lum; | |
246 | struct ustcomm_ust_reply lur; | |
247 | int ret; | |
248 | ||
249 | DBG("Sending register done command to %d", sock); | |
250 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
251 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
252 | lum.cmd = LTTNG_UST_ABI_REGISTER_DONE; | |
1c5e467e MD |
253 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
254 | if (ret) | |
255 | return ret; | |
1c5e467e | 256 | return 0; |
1c5e467e MD |
257 | } |
258 | ||
57773204 MD |
259 | /* |
260 | * returns session handle. | |
261 | */ | |
249cffb5 | 262 | int lttng_ust_ctl_create_session(int sock) |
57773204 MD |
263 | { |
264 | struct ustcomm_ust_msg lum; | |
265 | struct ustcomm_ust_reply lur; | |
266 | int ret, session_handle; | |
267 | ||
268 | /* Create session */ | |
269 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
270 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
271 | lum.cmd = LTTNG_UST_ABI_SESSION; | |
57773204 MD |
272 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
273 | if (ret) | |
274 | return ret; | |
275 | session_handle = lur.ret_val; | |
276 | DBG("received session handle %u", session_handle); | |
277 | return session_handle; | |
278 | } | |
279 | ||
249cffb5 | 280 | int lttng_ust_ctl_create_event(int sock, struct lttng_ust_abi_event *ev, |
fd17d7ce MD |
281 | struct lttng_ust_abi_object_data *channel_data, |
282 | struct lttng_ust_abi_object_data **_event_data) | |
57773204 MD |
283 | { |
284 | struct ustcomm_ust_msg lum; | |
285 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 286 | struct lttng_ust_abi_object_data *event_data; |
57773204 MD |
287 | int ret; |
288 | ||
9bfc503d MD |
289 | if (!channel_data || !_event_data) |
290 | return -EINVAL; | |
291 | ||
74d81a6c | 292 | event_data = zmalloc(sizeof(*event_data)); |
57773204 MD |
293 | if (!event_data) |
294 | return -ENOMEM; | |
fd17d7ce | 295 | event_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT; |
57773204 MD |
296 | memset(&lum, 0, sizeof(lum)); |
297 | lum.handle = channel_data->handle; | |
fd17d7ce | 298 | lum.cmd = LTTNG_UST_ABI_EVENT; |
57773204 | 299 | strncpy(lum.u.event.name, ev->name, |
fd17d7ce | 300 | LTTNG_UST_ABI_SYM_NAME_LEN); |
57773204 | 301 | lum.u.event.instrumentation = ev->instrumentation; |
457a6b58 MD |
302 | lum.u.event.loglevel_type = ev->loglevel_type; |
303 | lum.u.event.loglevel = ev->loglevel; | |
57773204 MD |
304 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
305 | if (ret) { | |
306 | free(event_data); | |
307 | return ret; | |
308 | } | |
309 | event_data->handle = lur.ret_val; | |
310 | DBG("received event handle %u", event_data->handle); | |
311 | *_event_data = event_data; | |
312 | return 0; | |
313 | } | |
314 | ||
249cffb5 | 315 | int lttng_ust_ctl_add_context(int sock, struct lttng_ust_context_attr *ctx, |
fd17d7ce MD |
316 | struct lttng_ust_abi_object_data *obj_data, |
317 | struct lttng_ust_abi_object_data **_context_data) | |
57773204 MD |
318 | { |
319 | struct ustcomm_ust_msg lum; | |
320 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 321 | struct lttng_ust_abi_object_data *context_data = NULL; |
53f0df51 JG |
322 | char *buf = NULL; |
323 | size_t len; | |
57773204 MD |
324 | int ret; |
325 | ||
53f0df51 JG |
326 | if (!obj_data || !_context_data) { |
327 | ret = -EINVAL; | |
328 | goto end; | |
329 | } | |
9bfc503d | 330 | |
74d81a6c | 331 | context_data = zmalloc(sizeof(*context_data)); |
53f0df51 JG |
332 | if (!context_data) { |
333 | ret = -ENOMEM; | |
334 | goto end; | |
335 | } | |
fd17d7ce | 336 | context_data->type = LTTNG_UST_ABI_OBJECT_TYPE_CONTEXT; |
57773204 | 337 | memset(&lum, 0, sizeof(lum)); |
3039d8ed | 338 | lum.handle = obj_data->handle; |
fd17d7ce | 339 | lum.cmd = LTTNG_UST_ABI_CONTEXT; |
53f0df51 JG |
340 | |
341 | lum.u.context.ctx = ctx->ctx; | |
342 | switch (ctx->ctx) { | |
fd17d7ce | 343 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
53f0df51 JG |
344 | lum.u.context.u.perf_counter = ctx->u.perf_counter; |
345 | break; | |
fd17d7ce | 346 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
53f0df51 JG |
347 | { |
348 | size_t provider_name_len = strlen( | |
349 | ctx->u.app_ctx.provider_name) + 1; | |
350 | size_t ctx_name_len = strlen(ctx->u.app_ctx.ctx_name) + 1; | |
351 | ||
352 | lum.u.context.u.app_ctx.provider_name_len = provider_name_len; | |
353 | lum.u.context.u.app_ctx.ctx_name_len = ctx_name_len; | |
354 | ||
355 | len = provider_name_len + ctx_name_len; | |
356 | buf = zmalloc(len); | |
357 | if (!buf) { | |
358 | ret = -ENOMEM; | |
359 | goto end; | |
360 | } | |
361 | memcpy(buf, ctx->u.app_ctx.provider_name, | |
362 | provider_name_len); | |
363 | memcpy(buf + provider_name_len, ctx->u.app_ctx.ctx_name, | |
364 | ctx_name_len); | |
365 | break; | |
366 | } | |
367 | default: | |
368 | break; | |
369 | } | |
370 | ret = ustcomm_send_app_msg(sock, &lum); | |
371 | if (ret) | |
372 | goto end; | |
373 | if (buf) { | |
374 | /* send var len ctx_name */ | |
375 | ret = ustcomm_send_unix_sock(sock, buf, len); | |
376 | if (ret < 0) { | |
377 | goto end; | |
378 | } | |
379 | if (ret != len) { | |
380 | ret = -EINVAL; | |
381 | goto end; | |
382 | } | |
383 | } | |
384 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
385 | if (ret < 0) { | |
386 | goto end; | |
57773204 | 387 | } |
32ce8569 MD |
388 | context_data->handle = -1; |
389 | DBG("Context created successfully"); | |
57773204 | 390 | *_context_data = context_data; |
53f0df51 JG |
391 | context_data = NULL; |
392 | end: | |
393 | free(context_data); | |
394 | free(buf); | |
57773204 MD |
395 | return ret; |
396 | } | |
397 | ||
249cffb5 | 398 | int lttng_ust_ctl_set_filter(int sock, struct lttng_ust_abi_filter_bytecode *bytecode, |
fd17d7ce | 399 | struct lttng_ust_abi_object_data *obj_data) |
cd54f6d9 MD |
400 | { |
401 | struct ustcomm_ust_msg lum; | |
402 | struct ustcomm_ust_reply lur; | |
403 | int ret; | |
404 | ||
405 | if (!obj_data) | |
406 | return -EINVAL; | |
407 | ||
408 | memset(&lum, 0, sizeof(lum)); | |
409 | lum.handle = obj_data->handle; | |
fd17d7ce | 410 | lum.cmd = LTTNG_UST_ABI_FILTER; |
cd54f6d9 MD |
411 | lum.u.filter.data_size = bytecode->len; |
412 | lum.u.filter.reloc_offset = bytecode->reloc_offset; | |
e695af51 | 413 | lum.u.filter.seqnum = bytecode->seqnum; |
cd54f6d9 MD |
414 | |
415 | ret = ustcomm_send_app_msg(sock, &lum); | |
d37ecb3f FD |
416 | if (ret) |
417 | return ret; | |
418 | /* send var len bytecode */ | |
419 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
420 | bytecode->len); | |
421 | if (ret < 0) { | |
422 | return ret; | |
423 | } | |
424 | if (ret != bytecode->len) | |
425 | return -EINVAL; | |
426 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
427 | } | |
428 | ||
249cffb5 | 429 | int lttng_ust_ctl_set_capture(int sock, struct lttng_ust_abi_capture_bytecode *bytecode, |
fd17d7ce | 430 | struct lttng_ust_abi_object_data *obj_data) |
d37ecb3f FD |
431 | { |
432 | struct ustcomm_ust_msg lum; | |
433 | struct ustcomm_ust_reply lur; | |
434 | int ret; | |
435 | ||
436 | if (!obj_data) | |
437 | return -EINVAL; | |
438 | ||
439 | memset(&lum, 0, sizeof(lum)); | |
440 | lum.handle = obj_data->handle; | |
fd17d7ce | 441 | lum.cmd = LTTNG_UST_ABI_CAPTURE; |
d37ecb3f FD |
442 | lum.u.capture.data_size = bytecode->len; |
443 | lum.u.capture.reloc_offset = bytecode->reloc_offset; | |
444 | lum.u.capture.seqnum = bytecode->seqnum; | |
445 | ||
446 | ret = ustcomm_send_app_msg(sock, &lum); | |
cd54f6d9 MD |
447 | if (ret) |
448 | return ret; | |
cd54f6d9 MD |
449 | /* send var len bytecode */ |
450 | ret = ustcomm_send_unix_sock(sock, bytecode->data, | |
451 | bytecode->len); | |
452 | if (ret < 0) { | |
453 | return ret; | |
454 | } | |
7bc53e94 MD |
455 | if (ret != bytecode->len) |
456 | return -EINVAL; | |
457 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
cd54f6d9 MD |
458 | } |
459 | ||
249cffb5 | 460 | int lttng_ust_ctl_set_exclusion(int sock, struct lttng_ust_abi_event_exclusion *exclusion, |
fd17d7ce | 461 | struct lttng_ust_abi_object_data *obj_data) |
da57c034 JI |
462 | { |
463 | struct ustcomm_ust_msg lum; | |
464 | struct ustcomm_ust_reply lur; | |
465 | int ret; | |
466 | ||
467 | if (!obj_data) { | |
468 | return -EINVAL; | |
469 | } | |
470 | ||
471 | memset(&lum, 0, sizeof(lum)); | |
472 | lum.handle = obj_data->handle; | |
fd17d7ce | 473 | lum.cmd = LTTNG_UST_ABI_EXCLUSION; |
da57c034 JI |
474 | lum.u.exclusion.count = exclusion->count; |
475 | ||
476 | ret = ustcomm_send_app_msg(sock, &lum); | |
477 | if (ret) { | |
478 | return ret; | |
479 | } | |
480 | ||
1628366f | 481 | /* send var len exclusion names */ |
da57c034 JI |
482 | ret = ustcomm_send_unix_sock(sock, |
483 | exclusion->names, | |
fd17d7ce | 484 | exclusion->count * LTTNG_UST_ABI_SYM_NAME_LEN); |
da57c034 JI |
485 | if (ret < 0) { |
486 | return ret; | |
487 | } | |
fd17d7ce | 488 | if (ret != exclusion->count * LTTNG_UST_ABI_SYM_NAME_LEN) { |
da57c034 JI |
489 | return -EINVAL; |
490 | } | |
491 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
492 | } | |
493 | ||
57773204 | 494 | /* Enable event, channel and session ioctl */ |
249cffb5 | 495 | int lttng_ust_ctl_enable(int sock, struct lttng_ust_abi_object_data *object) |
57773204 MD |
496 | { |
497 | struct ustcomm_ust_msg lum; | |
498 | struct ustcomm_ust_reply lur; | |
499 | int ret; | |
500 | ||
9bfc503d MD |
501 | if (!object) |
502 | return -EINVAL; | |
503 | ||
57773204 MD |
504 | memset(&lum, 0, sizeof(lum)); |
505 | lum.handle = object->handle; | |
fd17d7ce | 506 | lum.cmd = LTTNG_UST_ABI_ENABLE; |
57773204 MD |
507 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
508 | if (ret) | |
509 | return ret; | |
510 | DBG("enabled handle %u", object->handle); | |
511 | return 0; | |
512 | } | |
513 | ||
514 | /* Disable event, channel and session ioctl */ | |
249cffb5 | 515 | int lttng_ust_ctl_disable(int sock, struct lttng_ust_abi_object_data *object) |
57773204 MD |
516 | { |
517 | struct ustcomm_ust_msg lum; | |
518 | struct ustcomm_ust_reply lur; | |
519 | int ret; | |
520 | ||
9bfc503d MD |
521 | if (!object) |
522 | return -EINVAL; | |
523 | ||
57773204 MD |
524 | memset(&lum, 0, sizeof(lum)); |
525 | lum.handle = object->handle; | |
fd17d7ce | 526 | lum.cmd = LTTNG_UST_ABI_DISABLE; |
57773204 MD |
527 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
528 | if (ret) | |
529 | return ret; | |
530 | DBG("disable handle %u", object->handle); | |
531 | return 0; | |
532 | } | |
533 | ||
249cffb5 | 534 | int lttng_ust_ctl_start_session(int sock, int handle) |
57773204 | 535 | { |
fd17d7ce | 536 | struct lttng_ust_abi_object_data obj; |
4a6ca058 MD |
537 | |
538 | obj.handle = handle; | |
249cffb5 | 539 | return lttng_ust_ctl_enable(sock, &obj); |
57773204 MD |
540 | } |
541 | ||
249cffb5 | 542 | int lttng_ust_ctl_stop_session(int sock, int handle) |
57773204 | 543 | { |
fd17d7ce | 544 | struct lttng_ust_abi_object_data obj; |
4a6ca058 MD |
545 | |
546 | obj.handle = handle; | |
249cffb5 | 547 | return lttng_ust_ctl_disable(sock, &obj); |
57773204 MD |
548 | } |
549 | ||
249cffb5 | 550 | int lttng_ust_ctl_create_event_notifier_group(int sock, int pipe_fd, |
fd17d7ce | 551 | struct lttng_ust_abi_object_data **_event_notifier_group_data) |
d8d2416d | 552 | { |
fd17d7ce | 553 | struct lttng_ust_abi_object_data *event_notifier_group_data; |
d8d2416d FD |
554 | struct ustcomm_ust_msg lum; |
555 | struct ustcomm_ust_reply lur; | |
556 | ssize_t len; | |
557 | int ret; | |
558 | ||
559 | if (!_event_notifier_group_data) | |
560 | return -EINVAL; | |
561 | ||
562 | event_notifier_group_data = zmalloc(sizeof(*event_notifier_group_data)); | |
563 | if (!event_notifier_group_data) | |
564 | return -ENOMEM; | |
565 | ||
fd17d7ce | 566 | event_notifier_group_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER_GROUP; |
d8d2416d FD |
567 | |
568 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
569 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
570 | lum.cmd = LTTNG_UST_ABI_EVENT_NOTIFIER_GROUP_CREATE; | |
d8d2416d FD |
571 | |
572 | ret = ustcomm_send_app_msg(sock, &lum); | |
573 | if (ret) | |
574 | goto error; | |
575 | ||
576 | /* Send event_notifier notification pipe. */ | |
577 | len = ustcomm_send_fds_unix_sock(sock, &pipe_fd, 1); | |
578 | if (len <= 0) { | |
579 | ret = len; | |
580 | goto error; | |
581 | } | |
582 | ||
583 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
584 | if (ret) | |
585 | goto error; | |
586 | ||
587 | event_notifier_group_data->handle = lur.ret_val; | |
588 | DBG("received event_notifier group handle %d", event_notifier_group_data->handle); | |
589 | ||
590 | *_event_notifier_group_data = event_notifier_group_data; | |
591 | ||
592 | ret = 0; | |
593 | goto end; | |
594 | error: | |
595 | free(event_notifier_group_data); | |
596 | ||
597 | end: | |
598 | return ret; | |
599 | } | |
600 | ||
249cffb5 | 601 | int lttng_ust_ctl_create_event_notifier(int sock, struct lttng_ust_abi_event_notifier *event_notifier, |
fd17d7ce MD |
602 | struct lttng_ust_abi_object_data *event_notifier_group, |
603 | struct lttng_ust_abi_object_data **_event_notifier_data) | |
d8d2416d FD |
604 | { |
605 | struct ustcomm_ust_msg lum; | |
606 | struct ustcomm_ust_reply lur; | |
fd17d7ce | 607 | struct lttng_ust_abi_object_data *event_notifier_data; |
8406222c | 608 | ssize_t len; |
d8d2416d FD |
609 | int ret; |
610 | ||
611 | if (!event_notifier_group || !_event_notifier_data) | |
612 | return -EINVAL; | |
613 | ||
614 | event_notifier_data = zmalloc(sizeof(*event_notifier_data)); | |
615 | if (!event_notifier_data) | |
616 | return -ENOMEM; | |
617 | ||
fd17d7ce | 618 | event_notifier_data->type = LTTNG_UST_ABI_OBJECT_TYPE_EVENT_NOTIFIER; |
d8d2416d FD |
619 | |
620 | memset(&lum, 0, sizeof(lum)); | |
621 | lum.handle = event_notifier_group->handle; | |
fd17d7ce | 622 | lum.cmd = LTTNG_UST_ABI_EVENT_NOTIFIER_CREATE; |
8406222c | 623 | lum.u.event_notifier.len = sizeof(*event_notifier); |
d8d2416d | 624 | |
41844673 | 625 | ret = ustcomm_send_app_msg(sock, &lum); |
d8d2416d FD |
626 | if (ret) { |
627 | free(event_notifier_data); | |
628 | return ret; | |
629 | } | |
31624f6c | 630 | /* Send struct lttng_ust_abi_event_notifier */ |
8406222c MD |
631 | len = ustcomm_send_unix_sock(sock, event_notifier, sizeof(*event_notifier)); |
632 | if (len != sizeof(*event_notifier)) { | |
4c4f4917 | 633 | free(event_notifier_data); |
8406222c MD |
634 | if (len < 0) |
635 | return len; | |
636 | else | |
637 | return -EIO; | |
638 | } | |
41844673 MD |
639 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); |
640 | if (ret) { | |
641 | free(event_notifier_data); | |
642 | return ret; | |
643 | } | |
d8d2416d FD |
644 | event_notifier_data->handle = lur.ret_val; |
645 | DBG("received event_notifier handle %u", event_notifier_data->handle); | |
646 | *_event_notifier_data = event_notifier_data; | |
647 | ||
648 | return ret; | |
649 | } | |
650 | ||
249cffb5 | 651 | int lttng_ust_ctl_tracepoint_list(int sock) |
57773204 | 652 | { |
b115631f MD |
653 | struct ustcomm_ust_msg lum; |
654 | struct ustcomm_ust_reply lur; | |
655 | int ret, tp_list_handle; | |
656 | ||
657 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
658 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
659 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_LIST; | |
b115631f MD |
660 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
661 | if (ret) | |
662 | return ret; | |
663 | tp_list_handle = lur.ret_val; | |
664 | DBG("received tracepoint list handle %u", tp_list_handle); | |
665 | return tp_list_handle; | |
666 | } | |
667 | ||
249cffb5 | 668 | int lttng_ust_ctl_tracepoint_list_get(int sock, int tp_list_handle, |
fd17d7ce | 669 | struct lttng_ust_abi_tracepoint_iter *iter) |
b115631f MD |
670 | { |
671 | struct ustcomm_ust_msg lum; | |
672 | struct ustcomm_ust_reply lur; | |
673 | int ret; | |
674 | ||
9bfc503d MD |
675 | if (!iter) |
676 | return -EINVAL; | |
677 | ||
b115631f MD |
678 | memset(&lum, 0, sizeof(lum)); |
679 | lum.handle = tp_list_handle; | |
fd17d7ce | 680 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_LIST_GET; |
b115631f MD |
681 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
682 | if (ret) | |
683 | return ret; | |
882a56d7 | 684 | DBG("received tracepoint list entry name %s loglevel %d", |
cbef6901 | 685 | lur.u.tracepoint.name, |
882a56d7 | 686 | lur.u.tracepoint.loglevel); |
cbef6901 | 687 | memcpy(iter, &lur.u.tracepoint, sizeof(*iter)); |
b115631f | 688 | return 0; |
57773204 MD |
689 | } |
690 | ||
249cffb5 | 691 | int lttng_ust_ctl_tracepoint_field_list(int sock) |
40003310 MD |
692 | { |
693 | struct ustcomm_ust_msg lum; | |
694 | struct ustcomm_ust_reply lur; | |
695 | int ret, tp_field_list_handle; | |
696 | ||
697 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
698 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
699 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_FIELD_LIST; | |
40003310 MD |
700 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
701 | if (ret) | |
702 | return ret; | |
703 | tp_field_list_handle = lur.ret_val; | |
704 | DBG("received tracepoint field list handle %u", tp_field_list_handle); | |
705 | return tp_field_list_handle; | |
706 | } | |
707 | ||
249cffb5 | 708 | int lttng_ust_ctl_tracepoint_field_list_get(int sock, int tp_field_list_handle, |
fd17d7ce | 709 | struct lttng_ust_abi_field_iter *iter) |
40003310 MD |
710 | { |
711 | struct ustcomm_ust_msg lum; | |
712 | struct ustcomm_ust_reply lur; | |
713 | int ret; | |
714 | ssize_t len; | |
715 | ||
716 | if (!iter) | |
717 | return -EINVAL; | |
718 | ||
719 | memset(&lum, 0, sizeof(lum)); | |
720 | lum.handle = tp_field_list_handle; | |
fd17d7ce | 721 | lum.cmd = LTTNG_UST_ABI_TRACEPOINT_FIELD_LIST_GET; |
40003310 MD |
722 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
723 | if (ret) | |
724 | return ret; | |
725 | len = ustcomm_recv_unix_sock(sock, iter, sizeof(*iter)); | |
726 | if (len != sizeof(*iter)) { | |
727 | return -EINVAL; | |
728 | } | |
729 | DBG("received tracepoint field list entry event_name %s event_loglevel %d field_name %s field_type %d", | |
730 | iter->event_name, | |
731 | iter->loglevel, | |
732 | iter->field_name, | |
733 | iter->type); | |
734 | return 0; | |
735 | } | |
736 | ||
249cffb5 | 737 | int lttng_ust_ctl_tracer_version(int sock, struct lttng_ust_abi_tracer_version *v) |
57773204 MD |
738 | { |
739 | struct ustcomm_ust_msg lum; | |
740 | struct ustcomm_ust_reply lur; | |
741 | int ret; | |
742 | ||
9bfc503d MD |
743 | if (!v) |
744 | return -EINVAL; | |
745 | ||
57773204 | 746 | memset(&lum, 0, sizeof(lum)); |
fd17d7ce MD |
747 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
748 | lum.cmd = LTTNG_UST_ABI_TRACER_VERSION; | |
57773204 MD |
749 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
750 | if (ret) | |
751 | return ret; | |
752 | memcpy(v, &lur.u.version, sizeof(*v)); | |
753 | DBG("received tracer version"); | |
754 | return 0; | |
755 | } | |
756 | ||
249cffb5 | 757 | int lttng_ust_ctl_wait_quiescent(int sock) |
57773204 MD |
758 | { |
759 | struct ustcomm_ust_msg lum; | |
760 | struct ustcomm_ust_reply lur; | |
761 | int ret; | |
762 | ||
763 | memset(&lum, 0, sizeof(lum)); | |
fd17d7ce MD |
764 | lum.handle = LTTNG_UST_ABI_ROOT_HANDLE; |
765 | lum.cmd = LTTNG_UST_ABI_WAIT_QUIESCENT; | |
57773204 MD |
766 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
767 | if (ret) | |
768 | return ret; | |
769 | DBG("waited for quiescent state"); | |
770 | return 0; | |
771 | } | |
772 | ||
249cffb5 | 773 | int lttng_ust_ctl_calibrate(int sock __attribute__((unused)), |
2208d8b5 | 774 | struct lttng_ust_abi_calibrate *calibrate) |
57773204 | 775 | { |
9bfc503d MD |
776 | if (!calibrate) |
777 | return -EINVAL; | |
778 | ||
57773204 MD |
779 | return -ENOSYS; |
780 | } | |
781 | ||
249cffb5 | 782 | int lttng_ust_ctl_sock_flush_buffer(int sock, struct lttng_ust_abi_object_data *object) |
f1fffc57 MD |
783 | { |
784 | struct ustcomm_ust_msg lum; | |
785 | struct ustcomm_ust_reply lur; | |
786 | int ret; | |
787 | ||
9bfc503d MD |
788 | if (!object) |
789 | return -EINVAL; | |
790 | ||
f1fffc57 MD |
791 | memset(&lum, 0, sizeof(lum)); |
792 | lum.handle = object->handle; | |
fd17d7ce | 793 | lum.cmd = LTTNG_UST_ABI_FLUSH_BUFFER; |
f1fffc57 MD |
794 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
795 | if (ret) | |
796 | return ret; | |
797 | DBG("flushed buffer handle %u", object->handle); | |
798 | return 0; | |
799 | } | |
800 | ||
74d81a6c | 801 | static |
249cffb5 | 802 | int lttng_ust_ctl_send_channel(int sock, |
fd17d7ce | 803 | enum lttng_ust_abi_chan_type type, |
74d81a6c MD |
804 | void *data, |
805 | uint64_t size, | |
ff0f5728 | 806 | int wakeup_fd, |
74d81a6c MD |
807 | int send_fd_only) |
808 | { | |
809 | ssize_t len; | |
810 | ||
811 | if (!send_fd_only) { | |
812 | /* Send mmap size */ | |
813 | len = ustcomm_send_unix_sock(sock, &size, sizeof(size)); | |
814 | if (len != sizeof(size)) { | |
815 | if (len < 0) | |
816 | return len; | |
817 | else | |
818 | return -EIO; | |
819 | } | |
820 | ||
821 | /* Send channel type */ | |
822 | len = ustcomm_send_unix_sock(sock, &type, sizeof(type)); | |
823 | if (len != sizeof(type)) { | |
824 | if (len < 0) | |
825 | return len; | |
826 | else | |
827 | return -EIO; | |
828 | } | |
829 | } | |
830 | ||
831 | /* Send channel data */ | |
832 | len = ustcomm_send_unix_sock(sock, data, size); | |
833 | if (len != size) { | |
834 | if (len < 0) | |
835 | return len; | |
836 | else | |
837 | return -EIO; | |
838 | } | |
57773204 | 839 | |
ff0f5728 MD |
840 | /* Send wakeup fd */ |
841 | len = ustcomm_send_fds_unix_sock(sock, &wakeup_fd, 1); | |
842 | if (len <= 0) { | |
843 | if (len < 0) | |
844 | return len; | |
845 | else | |
846 | return -EIO; | |
847 | } | |
74d81a6c MD |
848 | return 0; |
849 | } | |
850 | ||
851 | static | |
249cffb5 | 852 | int lttng_ust_ctl_send_stream(int sock, |
74d81a6c MD |
853 | uint32_t stream_nr, |
854 | uint64_t memory_map_size, | |
855 | int shm_fd, int wakeup_fd, | |
856 | int send_fd_only) | |
57773204 | 857 | { |
74d81a6c MD |
858 | ssize_t len; |
859 | int fds[2]; | |
860 | ||
861 | if (!send_fd_only) { | |
862 | if (shm_fd < 0) { | |
863 | /* finish iteration */ | |
864 | uint64_t v = -1; | |
865 | ||
866 | len = ustcomm_send_unix_sock(sock, &v, sizeof(v)); | |
867 | if (len != sizeof(v)) { | |
868 | if (len < 0) | |
869 | return len; | |
870 | else | |
871 | return -EIO; | |
872 | } | |
873 | return 0; | |
874 | } | |
875 | ||
876 | /* Send mmap size */ | |
877 | len = ustcomm_send_unix_sock(sock, &memory_map_size, | |
878 | sizeof(memory_map_size)); | |
879 | if (len != sizeof(memory_map_size)) { | |
880 | if (len < 0) | |
881 | return len; | |
882 | else | |
883 | return -EIO; | |
884 | } | |
885 | ||
886 | /* Send stream nr */ | |
887 | len = ustcomm_send_unix_sock(sock, &stream_nr, | |
888 | sizeof(stream_nr)); | |
889 | if (len != sizeof(stream_nr)) { | |
890 | if (len < 0) | |
891 | return len; | |
892 | else | |
893 | return -EIO; | |
894 | } | |
895 | } | |
896 | ||
897 | /* Send shm fd and wakeup fd */ | |
898 | fds[0] = shm_fd; | |
899 | fds[1] = wakeup_fd; | |
900 | len = ustcomm_send_fds_unix_sock(sock, fds, 2); | |
901 | if (len <= 0) { | |
902 | if (len < 0) | |
903 | return len; | |
904 | else | |
905 | return -EIO; | |
906 | } | |
907 | return 0; | |
908 | } | |
909 | ||
249cffb5 | 910 | int lttng_ust_ctl_recv_channel_from_consumer(int sock, |
fd17d7ce | 911 | struct lttng_ust_abi_object_data **_channel_data) |
74d81a6c | 912 | { |
fd17d7ce | 913 | struct lttng_ust_abi_object_data *channel_data; |
74d81a6c | 914 | ssize_t len; |
ff0f5728 | 915 | int wakeup_fd; |
7a784989 | 916 | int ret; |
57773204 | 917 | |
74d81a6c MD |
918 | channel_data = zmalloc(sizeof(*channel_data)); |
919 | if (!channel_data) { | |
920 | ret = -ENOMEM; | |
921 | goto error_alloc; | |
922 | } | |
fd17d7ce | 923 | channel_data->type = LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL; |
12f3dabc | 924 | channel_data->handle = -1; |
74d81a6c MD |
925 | |
926 | /* recv mmap size */ | |
927 | len = ustcomm_recv_unix_sock(sock, &channel_data->size, | |
928 | sizeof(channel_data->size)); | |
929 | if (len != sizeof(channel_data->size)) { | |
930 | if (len < 0) | |
931 | ret = len; | |
932 | else | |
933 | ret = -EINVAL; | |
934 | goto error; | |
935 | } | |
9bfc503d | 936 | |
74d81a6c MD |
937 | /* recv channel type */ |
938 | len = ustcomm_recv_unix_sock(sock, &channel_data->u.channel.type, | |
939 | sizeof(channel_data->u.channel.type)); | |
940 | if (len != sizeof(channel_data->u.channel.type)) { | |
941 | if (len < 0) | |
942 | ret = len; | |
943 | else | |
944 | ret = -EINVAL; | |
945 | goto error; | |
946 | } | |
947 | ||
948 | /* recv channel data */ | |
949 | channel_data->u.channel.data = zmalloc(channel_data->size); | |
950 | if (!channel_data->u.channel.data) { | |
951 | ret = -ENOMEM; | |
952 | goto error; | |
953 | } | |
954 | len = ustcomm_recv_unix_sock(sock, channel_data->u.channel.data, | |
955 | channel_data->size); | |
956 | if (len != channel_data->size) { | |
957 | if (len < 0) | |
958 | ret = len; | |
959 | else | |
960 | ret = -EINVAL; | |
961 | goto error_recv_data; | |
962 | } | |
ff0f5728 MD |
963 | /* recv wakeup fd */ |
964 | len = ustcomm_recv_fds_unix_sock(sock, &wakeup_fd, 1); | |
965 | if (len <= 0) { | |
966 | if (len < 0) { | |
967 | ret = len; | |
968 | goto error_recv_data; | |
969 | } else { | |
970 | ret = -EIO; | |
971 | goto error_recv_data; | |
972 | } | |
973 | } | |
974 | channel_data->u.channel.wakeup_fd = wakeup_fd; | |
74d81a6c MD |
975 | *_channel_data = channel_data; |
976 | return 0; | |
977 | ||
978 | error_recv_data: | |
979 | free(channel_data->u.channel.data); | |
980 | error: | |
981 | free(channel_data); | |
982 | error_alloc: | |
983 | return ret; | |
984 | } | |
985 | ||
249cffb5 | 986 | int lttng_ust_ctl_recv_stream_from_consumer(int sock, |
fd17d7ce | 987 | struct lttng_ust_abi_object_data **_stream_data) |
74d81a6c | 988 | { |
fd17d7ce | 989 | struct lttng_ust_abi_object_data *stream_data; |
74d81a6c MD |
990 | ssize_t len; |
991 | int ret; | |
992 | int fds[2]; | |
993 | ||
994 | stream_data = zmalloc(sizeof(*stream_data)); | |
995 | if (!stream_data) { | |
996 | ret = -ENOMEM; | |
997 | goto error_alloc; | |
57773204 | 998 | } |
74d81a6c | 999 | |
fd17d7ce | 1000 | stream_data->type = LTTNG_UST_ABI_OBJECT_TYPE_STREAM; |
74d81a6c MD |
1001 | stream_data->handle = -1; |
1002 | ||
1003 | /* recv mmap size */ | |
1004 | len = ustcomm_recv_unix_sock(sock, &stream_data->size, | |
1005 | sizeof(stream_data->size)); | |
1006 | if (len != sizeof(stream_data->size)) { | |
1007 | if (len < 0) | |
1008 | ret = len; | |
1009 | else | |
1010 | ret = -EINVAL; | |
1011 | goto error; | |
1012 | } | |
1013 | if (stream_data->size == -1) { | |
1014 | ret = -LTTNG_UST_ERR_NOENT; | |
1015 | goto error; | |
1016 | } | |
1017 | ||
1018 | /* recv stream nr */ | |
1019 | len = ustcomm_recv_unix_sock(sock, &stream_data->u.stream.stream_nr, | |
1020 | sizeof(stream_data->u.stream.stream_nr)); | |
1021 | if (len != sizeof(stream_data->u.stream.stream_nr)) { | |
1022 | if (len < 0) | |
1023 | ret = len; | |
1024 | else | |
1025 | ret = -EINVAL; | |
1026 | goto error; | |
1027 | } | |
1028 | ||
1029 | /* recv shm fd and wakeup fd */ | |
1030 | len = ustcomm_recv_fds_unix_sock(sock, fds, 2); | |
1031 | if (len <= 0) { | |
1032 | if (len < 0) { | |
1033 | ret = len; | |
1034 | goto error; | |
1035 | } else { | |
1036 | ret = -EIO; | |
1037 | goto error; | |
0bfe09ec | 1038 | } |
0bfe09ec | 1039 | } |
74d81a6c MD |
1040 | stream_data->u.stream.shm_fd = fds[0]; |
1041 | stream_data->u.stream.wakeup_fd = fds[1]; | |
1042 | *_stream_data = stream_data; | |
1043 | return 0; | |
0bfe09ec | 1044 | |
74d81a6c MD |
1045 | error: |
1046 | free(stream_data); | |
1047 | error_alloc: | |
1048 | return ret; | |
1049 | } | |
1050 | ||
249cffb5 | 1051 | int lttng_ust_ctl_send_channel_to_ust(int sock, int session_handle, |
fd17d7ce | 1052 | struct lttng_ust_abi_object_data *channel_data) |
74d81a6c MD |
1053 | { |
1054 | struct ustcomm_ust_msg lum; | |
1055 | struct ustcomm_ust_reply lur; | |
1056 | int ret; | |
1057 | ||
1058 | if (!channel_data) | |
1059 | return -EINVAL; | |
1060 | ||
1061 | memset(&lum, 0, sizeof(lum)); | |
1062 | lum.handle = session_handle; | |
fd17d7ce | 1063 | lum.cmd = LTTNG_UST_ABI_CHANNEL; |
74d81a6c MD |
1064 | lum.u.channel.len = channel_data->size; |
1065 | lum.u.channel.type = channel_data->u.channel.type; | |
1066 | ret = ustcomm_send_app_msg(sock, &lum); | |
1067 | if (ret) | |
1068 | return ret; | |
1069 | ||
249cffb5 | 1070 | ret = lttng_ust_ctl_send_channel(sock, |
74d81a6c MD |
1071 | channel_data->u.channel.type, |
1072 | channel_data->u.channel.data, | |
1073 | channel_data->size, | |
ff0f5728 | 1074 | channel_data->u.channel.wakeup_fd, |
74d81a6c MD |
1075 | 1); |
1076 | if (ret) | |
1077 | return ret; | |
1078 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1079 | if (!ret) { | |
7f2348b8 | 1080 | channel_data->handle = lur.ret_val; |
57773204 | 1081 | } |
74d81a6c MD |
1082 | return ret; |
1083 | } | |
1084 | ||
249cffb5 | 1085 | int lttng_ust_ctl_send_stream_to_ust(int sock, |
fd17d7ce MD |
1086 | struct lttng_ust_abi_object_data *channel_data, |
1087 | struct lttng_ust_abi_object_data *stream_data) | |
74d81a6c MD |
1088 | { |
1089 | struct ustcomm_ust_msg lum; | |
1090 | struct ustcomm_ust_reply lur; | |
1091 | int ret; | |
1092 | ||
1093 | memset(&lum, 0, sizeof(lum)); | |
1094 | lum.handle = channel_data->handle; | |
fd17d7ce | 1095 | lum.cmd = LTTNG_UST_ABI_STREAM; |
74d81a6c MD |
1096 | lum.u.stream.len = stream_data->size; |
1097 | lum.u.stream.stream_nr = stream_data->u.stream.stream_nr; | |
1098 | ret = ustcomm_send_app_msg(sock, &lum); | |
1099 | if (ret) | |
1100 | return ret; | |
1101 | ||
1102 | assert(stream_data); | |
fd17d7ce | 1103 | assert(stream_data->type == LTTNG_UST_ABI_OBJECT_TYPE_STREAM); |
74d81a6c | 1104 | |
249cffb5 | 1105 | ret = lttng_ust_ctl_send_stream(sock, |
74d81a6c MD |
1106 | stream_data->u.stream.stream_nr, |
1107 | stream_data->size, | |
1108 | stream_data->u.stream.shm_fd, | |
1109 | stream_data->u.stream.wakeup_fd, 1); | |
1110 | if (ret) | |
1111 | return ret; | |
1112 | return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
1113 | } | |
1114 | ||
249cffb5 | 1115 | int lttng_ust_ctl_duplicate_ust_object_data(struct lttng_ust_abi_object_data **dest, |
fd17d7ce | 1116 | struct lttng_ust_abi_object_data *src) |
12f3dabc | 1117 | { |
fd17d7ce | 1118 | struct lttng_ust_abi_object_data *obj; |
12f3dabc MD |
1119 | int ret; |
1120 | ||
1121 | if (src->handle != -1) { | |
1122 | ret = -EINVAL; | |
1123 | goto error; | |
1124 | } | |
1125 | ||
1126 | obj = zmalloc(sizeof(*obj)); | |
1127 | if (!obj) { | |
1128 | ret = -ENOMEM; | |
1129 | goto error; | |
1130 | } | |
1131 | ||
1132 | obj->type = src->type; | |
1133 | obj->handle = src->handle; | |
1134 | obj->size = src->size; | |
1135 | ||
1136 | switch (obj->type) { | |
fd17d7ce | 1137 | case LTTNG_UST_ABI_OBJECT_TYPE_CHANNEL: |
12f3dabc MD |
1138 | { |
1139 | obj->u.channel.type = src->u.channel.type; | |
1140 | if (src->u.channel.wakeup_fd >= 0) { | |
1141 | obj->u.channel.wakeup_fd = | |
1142 | dup(src->u.channel.wakeup_fd); | |
1143 | if (obj->u.channel.wakeup_fd < 0) { | |
1144 | ret = errno; | |
1145 | goto chan_error_wakeup_fd; | |
1146 | } | |
1147 | } else { | |
1148 | obj->u.channel.wakeup_fd = | |
1149 | src->u.channel.wakeup_fd; | |
1150 | } | |
1151 | obj->u.channel.data = zmalloc(obj->size); | |
1152 | if (!obj->u.channel.data) { | |
1153 | ret = -ENOMEM; | |
1154 | goto chan_error_alloc; | |
1155 | } | |
1156 | memcpy(obj->u.channel.data, src->u.channel.data, obj->size); | |
1157 | break; | |
1158 | ||
1159 | chan_error_alloc: | |
1160 | if (src->u.channel.wakeup_fd >= 0) { | |
1161 | int closeret; | |
1162 | ||
1163 | closeret = close(obj->u.channel.wakeup_fd); | |
1164 | if (closeret) { | |
1165 | PERROR("close"); | |
1166 | } | |
1167 | } | |
1168 | chan_error_wakeup_fd: | |
1169 | goto error_type; | |
1170 | ||
1171 | } | |
1172 | ||
fd17d7ce | 1173 | case LTTNG_UST_ABI_OBJECT_TYPE_STREAM: |
12f3dabc MD |
1174 | { |
1175 | obj->u.stream.stream_nr = src->u.stream.stream_nr; | |
1176 | if (src->u.stream.wakeup_fd >= 0) { | |
1177 | obj->u.stream.wakeup_fd = | |
1178 | dup(src->u.stream.wakeup_fd); | |
1179 | if (obj->u.stream.wakeup_fd < 0) { | |
1180 | ret = errno; | |
1181 | goto stream_error_wakeup_fd; | |
1182 | } | |
1183 | } else { | |
1184 | obj->u.stream.wakeup_fd = | |
1185 | src->u.stream.wakeup_fd; | |
1186 | } | |
1187 | ||
1188 | if (src->u.stream.shm_fd >= 0) { | |
1189 | obj->u.stream.shm_fd = | |
1190 | dup(src->u.stream.shm_fd); | |
1191 | if (obj->u.stream.shm_fd < 0) { | |
1192 | ret = errno; | |
1193 | goto stream_error_shm_fd; | |
1194 | } | |
1195 | } else { | |
1196 | obj->u.stream.shm_fd = | |
1197 | src->u.stream.shm_fd; | |
1198 | } | |
1199 | break; | |
1200 | ||
1201 | stream_error_shm_fd: | |
1202 | if (src->u.stream.wakeup_fd >= 0) { | |
1203 | int closeret; | |
1204 | ||
1205 | closeret = close(obj->u.stream.wakeup_fd); | |
1206 | if (closeret) { | |
1207 | PERROR("close"); | |
1208 | } | |
1209 | } | |
1210 | stream_error_wakeup_fd: | |
1211 | goto error_type; | |
1212 | } | |
1213 | ||
fd17d7ce | 1214 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER: |
ebabbf58 MD |
1215 | { |
1216 | obj->u.counter.data = zmalloc(obj->size); | |
1217 | if (!obj->u.counter.data) { | |
1218 | ret = -ENOMEM; | |
1219 | goto error_type; | |
1220 | } | |
1221 | memcpy(obj->u.counter.data, src->u.counter.data, obj->size); | |
1222 | break; | |
1223 | } | |
1224 | ||
fd17d7ce | 1225 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL: |
ebabbf58 MD |
1226 | { |
1227 | if (src->u.counter_global.shm_fd >= 0) { | |
1228 | obj->u.counter_global.shm_fd = | |
1229 | dup(src->u.counter_global.shm_fd); | |
1230 | if (obj->u.counter_global.shm_fd < 0) { | |
1231 | ret = errno; | |
1232 | goto error_type; | |
1233 | } | |
1234 | } | |
1235 | break; | |
1236 | } | |
1237 | ||
fd17d7ce | 1238 | case LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU: |
ebabbf58 MD |
1239 | { |
1240 | obj->u.counter_cpu.cpu_nr = src->u.counter_cpu.cpu_nr; | |
1241 | if (src->u.counter_cpu.shm_fd >= 0) { | |
1242 | obj->u.counter_cpu.shm_fd = | |
1243 | dup(src->u.counter_cpu.shm_fd); | |
1244 | if (obj->u.counter_cpu.shm_fd < 0) { | |
1245 | ret = errno; | |
1246 | goto error_type; | |
1247 | } | |
1248 | } | |
1249 | break; | |
1250 | } | |
1251 | ||
12f3dabc MD |
1252 | default: |
1253 | ret = -EINVAL; | |
1254 | goto error_type; | |
1255 | } | |
1256 | ||
1257 | *dest = obj; | |
1258 | return 0; | |
1259 | ||
1260 | error_type: | |
1261 | free(obj); | |
1262 | error: | |
1263 | return ret; | |
1264 | } | |
1265 | ||
74d81a6c MD |
1266 | |
1267 | /* Buffer operations */ | |
1268 | ||
249cffb5 | 1269 | int lttng_ust_ctl_get_nr_stream_per_channel(void) |
5ea386c3 MD |
1270 | { |
1271 | return num_possible_cpus(); | |
1272 | } | |
1273 | ||
249cffb5 MJ |
1274 | struct lttng_ust_ctl_consumer_channel * |
1275 | lttng_ust_ctl_create_channel(struct lttng_ust_ctl_consumer_channel_attr *attr, | |
5ea386c3 | 1276 | const int *stream_fds, int nr_stream_fds) |
74d81a6c | 1277 | { |
249cffb5 | 1278 | struct lttng_ust_ctl_consumer_channel *chan; |
74d81a6c MD |
1279 | const char *transport_name; |
1280 | struct lttng_transport *transport; | |
1281 | ||
1282 | switch (attr->type) { | |
fd17d7ce MD |
1283 | case LTTNG_UST_ABI_CHAN_PER_CPU: |
1284 | if (attr->output == LTTNG_UST_ABI_MMAP) { | |
34a91bdb MD |
1285 | if (attr->overwrite) { |
1286 | if (attr->read_timer_interval == 0) { | |
1287 | transport_name = "relay-overwrite-mmap"; | |
1288 | } else { | |
1289 | transport_name = "relay-overwrite-rt-mmap"; | |
1290 | } | |
1291 | } else { | |
1292 | if (attr->read_timer_interval == 0) { | |
1293 | transport_name = "relay-discard-mmap"; | |
1294 | } else { | |
1295 | transport_name = "relay-discard-rt-mmap"; | |
1296 | } | |
1297 | } | |
74d81a6c MD |
1298 | } else { |
1299 | return NULL; | |
1300 | } | |
c1fca457 | 1301 | break; |
fd17d7ce MD |
1302 | case LTTNG_UST_ABI_CHAN_METADATA: |
1303 | if (attr->output == LTTNG_UST_ABI_MMAP) | |
74d81a6c MD |
1304 | transport_name = "relay-metadata-mmap"; |
1305 | else | |
1306 | return NULL; | |
c1fca457 MD |
1307 | break; |
1308 | default: | |
74d81a6c | 1309 | transport_name = "<unknown>"; |
c1fca457 MD |
1310 | return NULL; |
1311 | } | |
74d81a6c | 1312 | |
65c48d6a | 1313 | transport = lttng_ust_transport_find(transport_name); |
74d81a6c MD |
1314 | if (!transport) { |
1315 | DBG("LTTng transport %s not found\n", | |
32ce8569 | 1316 | transport_name); |
74d81a6c | 1317 | return NULL; |
7a784989 | 1318 | } |
74d81a6c MD |
1319 | |
1320 | chan = zmalloc(sizeof(*chan)); | |
1321 | if (!chan) | |
1322 | return NULL; | |
1323 | ||
a880bae5 | 1324 | chan->chan = transport->ops.priv->channel_create(transport_name, NULL, |
32ce8569 | 1325 | attr->subbuf_size, attr->num_subbuf, |
74d81a6c | 1326 | attr->switch_timer_interval, |
32ce8569 | 1327 | attr->read_timer_interval, |
a9ff648c | 1328 | attr->uuid, attr->chan_id, |
b2c5f61a MD |
1329 | stream_fds, nr_stream_fds, |
1330 | attr->blocking_timeout); | |
74d81a6c MD |
1331 | if (!chan->chan) { |
1332 | goto chan_error; | |
1333 | } | |
1334 | chan->chan->ops = &transport->ops; | |
1335 | memcpy(&chan->attr, attr, sizeof(chan->attr)); | |
249cffb5 MJ |
1336 | chan->wait_fd = lttng_ust_ctl_channel_get_wait_fd(chan); |
1337 | chan->wakeup_fd = lttng_ust_ctl_channel_get_wakeup_fd(chan); | |
74d81a6c MD |
1338 | return chan; |
1339 | ||
1340 | chan_error: | |
1341 | free(chan); | |
1342 | return NULL; | |
57773204 MD |
1343 | } |
1344 | ||
249cffb5 | 1345 | void lttng_ust_ctl_destroy_channel(struct lttng_ust_ctl_consumer_channel *chan) |
57773204 | 1346 | { |
249cffb5 MJ |
1347 | (void) lttng_ust_ctl_channel_close_wait_fd(chan); |
1348 | (void) lttng_ust_ctl_channel_close_wakeup_fd(chan); | |
a880bae5 | 1349 | chan->chan->ops->priv->channel_destroy(chan->chan); |
74d81a6c MD |
1350 | free(chan); |
1351 | } | |
1352 | ||
249cffb5 MJ |
1353 | int lttng_ust_ctl_send_channel_to_sessiond(int sock, |
1354 | struct lttng_ust_ctl_consumer_channel *channel) | |
74d81a6c MD |
1355 | { |
1356 | struct shm_object_table *table; | |
57773204 | 1357 | |
07539b34 | 1358 | table = channel->chan->priv->rb_chan->handle->table; |
74d81a6c | 1359 | if (table->size <= 0) |
9bfc503d | 1360 | return -EINVAL; |
249cffb5 | 1361 | return lttng_ust_ctl_send_channel(sock, |
74d81a6c MD |
1362 | channel->attr.type, |
1363 | table->objects[0].memory_map, | |
1364 | table->objects[0].memory_map_size, | |
ff0f5728 | 1365 | channel->wakeup_fd, |
74d81a6c MD |
1366 | 0); |
1367 | } | |
9bfc503d | 1368 | |
249cffb5 MJ |
1369 | int lttng_ust_ctl_send_stream_to_sessiond(int sock, |
1370 | struct lttng_ust_ctl_consumer_stream *stream) | |
74d81a6c MD |
1371 | { |
1372 | if (!stream) | |
249cffb5 | 1373 | return lttng_ust_ctl_send_stream(sock, -1U, -1U, -1, -1, 0); |
74d81a6c | 1374 | |
249cffb5 | 1375 | return lttng_ust_ctl_send_stream(sock, |
74d81a6c MD |
1376 | stream->cpu, |
1377 | stream->memory_map_size, | |
1378 | stream->shm_fd, stream->wakeup_fd, | |
1379 | 0); | |
57773204 MD |
1380 | } |
1381 | ||
249cffb5 MJ |
1382 | int lttng_ust_ctl_write_metadata_to_channel( |
1383 | struct lttng_ust_ctl_consumer_channel *channel, | |
c9023c93 MD |
1384 | const char *metadata_str, /* NOT null-terminated */ |
1385 | size_t len) /* metadata length */ | |
1386 | { | |
b5457df5 | 1387 | struct lttng_ust_ring_buffer_ctx ctx; |
e7bc0ef6 | 1388 | struct lttng_ust_channel_buffer *lttng_chan_buf = channel->chan; |
b5457df5 | 1389 | struct lttng_ust_ring_buffer_channel *rb_chan = lttng_chan_buf->priv->rb_chan; |
c9023c93 MD |
1390 | const char *str = metadata_str; |
1391 | int ret = 0, waitret; | |
1392 | size_t reserve_len, pos; | |
1393 | ||
1394 | for (pos = 0; pos < len; pos += reserve_len) { | |
1395 | reserve_len = min_t(size_t, | |
07539b34 | 1396 | lttng_chan_buf->ops->priv->packet_avail_size(lttng_chan_buf), |
c9023c93 | 1397 | len - pos); |
b5457df5 | 1398 | lttng_ust_ring_buffer_ctx_init(&ctx, rb_chan, reserve_len, sizeof(char), NULL); |
c9023c93 MD |
1399 | /* |
1400 | * We don't care about metadata buffer's records lost | |
1401 | * count, because we always retry here. Report error if | |
1402 | * we need to bail out after timeout or being | |
1403 | * interrupted. | |
1404 | */ | |
1405 | waitret = wait_cond_interruptible_timeout( | |
1406 | ({ | |
8936b6c0 | 1407 | ret = lttng_chan_buf->ops->event_reserve(&ctx); |
c9023c93 MD |
1408 | ret != -ENOBUFS || !ret; |
1409 | }), | |
1410 | LTTNG_METADATA_TIMEOUT_MSEC); | |
1411 | if (waitret == -ETIMEDOUT || waitret == -EINTR || ret) { | |
1412 | DBG("LTTng: Failure to write metadata to buffers (%s)\n", | |
1413 | waitret == -EINTR ? "interrupted" : | |
1414 | (ret == -ENOBUFS ? "timeout" : "I/O error")); | |
1415 | if (waitret == -EINTR) | |
1416 | ret = waitret; | |
1417 | goto end; | |
1418 | } | |
8936b6c0 | 1419 | lttng_chan_buf->ops->event_write(&ctx, &str[pos], reserve_len, 1); |
e7bc0ef6 | 1420 | lttng_chan_buf->ops->event_commit(&ctx); |
c9023c93 MD |
1421 | } |
1422 | end: | |
1423 | return ret; | |
1424 | } | |
1425 | ||
3ef94b0e JD |
1426 | /* |
1427 | * Write at most one packet in the channel. | |
1428 | * Returns the number of bytes written on success, < 0 on error. | |
1429 | */ | |
249cffb5 MJ |
1430 | ssize_t lttng_ust_ctl_write_one_packet_to_channel( |
1431 | struct lttng_ust_ctl_consumer_channel *channel, | |
3ef94b0e JD |
1432 | const char *metadata_str, /* NOT null-terminated */ |
1433 | size_t len) /* metadata length */ | |
1434 | { | |
b5457df5 | 1435 | struct lttng_ust_ring_buffer_ctx ctx; |
e7bc0ef6 | 1436 | struct lttng_ust_channel_buffer *lttng_chan_buf = channel->chan; |
b5457df5 | 1437 | struct lttng_ust_ring_buffer_channel *rb_chan = lttng_chan_buf->priv->rb_chan; |
3ef94b0e JD |
1438 | const char *str = metadata_str; |
1439 | ssize_t reserve_len; | |
1440 | int ret; | |
1441 | ||
1442 | reserve_len = min_t(ssize_t, | |
07539b34 | 1443 | lttng_chan_buf->ops->priv->packet_avail_size(lttng_chan_buf), |
3ef94b0e | 1444 | len); |
b5457df5 | 1445 | lttng_ust_ring_buffer_ctx_init(&ctx, rb_chan, reserve_len, sizeof(char), NULL); |
8936b6c0 | 1446 | ret = lttng_chan_buf->ops->event_reserve(&ctx); |
3ef94b0e JD |
1447 | if (ret != 0) { |
1448 | DBG("LTTng: event reservation failed"); | |
1449 | assert(ret < 0); | |
1450 | reserve_len = ret; | |
1451 | goto end; | |
1452 | } | |
8936b6c0 | 1453 | lttng_chan_buf->ops->event_write(&ctx, str, reserve_len, 1); |
e7bc0ef6 | 1454 | lttng_chan_buf->ops->event_commit(&ctx); |
3ef94b0e JD |
1455 | |
1456 | end: | |
1457 | return reserve_len; | |
1458 | } | |
1459 | ||
249cffb5 | 1460 | int lttng_ust_ctl_channel_close_wait_fd(struct lttng_ust_ctl_consumer_channel *consumer_chan) |
ff0f5728 | 1461 | { |
b5457df5 | 1462 | struct lttng_ust_ring_buffer_channel *chan; |
cb7378b3 | 1463 | int ret; |
ff0f5728 | 1464 | |
07539b34 | 1465 | chan = consumer_chan->chan->priv->rb_chan; |
cb7378b3 | 1466 | ret = ring_buffer_channel_close_wait_fd(&chan->backend.config, |
ff0f5728 | 1467 | chan, chan->handle); |
cb7378b3 MD |
1468 | if (!ret) |
1469 | consumer_chan->wait_fd = -1; | |
1470 | return ret; | |
ff0f5728 MD |
1471 | } |
1472 | ||
249cffb5 | 1473 | int lttng_ust_ctl_channel_close_wakeup_fd(struct lttng_ust_ctl_consumer_channel *consumer_chan) |
ff0f5728 | 1474 | { |
b5457df5 | 1475 | struct lttng_ust_ring_buffer_channel *chan; |
cb7378b3 | 1476 | int ret; |
ff0f5728 | 1477 | |
07539b34 | 1478 | chan = consumer_chan->chan->priv->rb_chan; |
cb7378b3 | 1479 | ret = ring_buffer_channel_close_wakeup_fd(&chan->backend.config, |
ff0f5728 | 1480 | chan, chan->handle); |
cb7378b3 MD |
1481 | if (!ret) |
1482 | consumer_chan->wakeup_fd = -1; | |
1483 | return ret; | |
ff0f5728 MD |
1484 | } |
1485 | ||
249cffb5 | 1486 | int lttng_ust_ctl_stream_close_wait_fd(struct lttng_ust_ctl_consumer_stream *stream) |
5224b5c8 | 1487 | { |
b5457df5 | 1488 | struct lttng_ust_ring_buffer_channel *chan; |
5224b5c8 | 1489 | |
07539b34 | 1490 | chan = stream->chan->chan->priv->rb_chan; |
ff0f5728 | 1491 | return ring_buffer_stream_close_wait_fd(&chan->backend.config, |
07539b34 | 1492 | chan, chan->handle, stream->cpu); |
5224b5c8 MD |
1493 | } |
1494 | ||
249cffb5 | 1495 | int lttng_ust_ctl_stream_close_wakeup_fd(struct lttng_ust_ctl_consumer_stream *stream) |
6e922b24 | 1496 | { |
b5457df5 | 1497 | struct lttng_ust_ring_buffer_channel *chan; |
74d81a6c | 1498 | |
07539b34 | 1499 | chan = stream->chan->chan->priv->rb_chan; |
ff0f5728 | 1500 | return ring_buffer_stream_close_wakeup_fd(&chan->backend.config, |
07539b34 | 1501 | chan, chan->handle, stream->cpu); |
74d81a6c MD |
1502 | } |
1503 | ||
249cffb5 MJ |
1504 | struct lttng_ust_ctl_consumer_stream * |
1505 | lttng_ust_ctl_create_stream(struct lttng_ust_ctl_consumer_channel *channel, | |
74d81a6c MD |
1506 | int cpu) |
1507 | { | |
249cffb5 | 1508 | struct lttng_ust_ctl_consumer_stream *stream; |
74d81a6c | 1509 | struct lttng_ust_shm_handle *handle; |
b5457df5 | 1510 | struct lttng_ust_ring_buffer_channel *rb_chan; |
74d81a6c MD |
1511 | int shm_fd, wait_fd, wakeup_fd; |
1512 | uint64_t memory_map_size; | |
63b3205f | 1513 | void *memory_map_addr; |
b5457df5 | 1514 | struct lttng_ust_ring_buffer *buf; |
6e922b24 MD |
1515 | int ret; |
1516 | ||
74d81a6c MD |
1517 | if (!channel) |
1518 | return NULL; | |
07539b34 MD |
1519 | rb_chan = channel->chan->priv->rb_chan; |
1520 | handle = rb_chan->handle; | |
9bfc503d MD |
1521 | if (!handle) |
1522 | return NULL; | |
1523 | ||
07539b34 MD |
1524 | buf = channel_get_ring_buffer(&rb_chan->backend.config, |
1525 | rb_chan, cpu, handle, &shm_fd, &wait_fd, | |
63b3205f | 1526 | &wakeup_fd, &memory_map_size, &memory_map_addr); |
6e922b24 MD |
1527 | if (!buf) |
1528 | return NULL; | |
74d81a6c | 1529 | ret = lib_ring_buffer_open_read(buf, handle); |
6e922b24 MD |
1530 | if (ret) |
1531 | return NULL; | |
74d81a6c MD |
1532 | |
1533 | stream = zmalloc(sizeof(*stream)); | |
1534 | if (!stream) | |
1535 | goto alloc_error; | |
74d81a6c MD |
1536 | stream->buf = buf; |
1537 | stream->chan = channel; | |
1538 | stream->shm_fd = shm_fd; | |
1539 | stream->wait_fd = wait_fd; | |
1540 | stream->wakeup_fd = wakeup_fd; | |
1541 | stream->memory_map_size = memory_map_size; | |
63b3205f | 1542 | stream->memory_map_addr = memory_map_addr; |
74d81a6c MD |
1543 | stream->cpu = cpu; |
1544 | return stream; | |
1545 | ||
1546 | alloc_error: | |
1547 | return NULL; | |
1548 | } | |
1549 | ||
249cffb5 | 1550 | void lttng_ust_ctl_destroy_stream(struct lttng_ust_ctl_consumer_stream *stream) |
74d81a6c | 1551 | { |
b5457df5 | 1552 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1553 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
74d81a6c MD |
1554 | |
1555 | assert(stream); | |
1556 | buf = stream->buf; | |
1557 | consumer_chan = stream->chan; | |
249cffb5 MJ |
1558 | (void) lttng_ust_ctl_stream_close_wait_fd(stream); |
1559 | (void) lttng_ust_ctl_stream_close_wakeup_fd(stream); | |
07539b34 | 1560 | lib_ring_buffer_release_read(buf, consumer_chan->chan->priv->rb_chan->handle); |
74d81a6c | 1561 | free(stream); |
6e922b24 MD |
1562 | } |
1563 | ||
249cffb5 | 1564 | int lttng_ust_ctl_channel_get_wait_fd(struct lttng_ust_ctl_consumer_channel *chan) |
ff0f5728 MD |
1565 | { |
1566 | if (!chan) | |
1567 | return -EINVAL; | |
07539b34 MD |
1568 | return shm_get_wait_fd(chan->chan->priv->rb_chan->handle, |
1569 | &chan->chan->priv->rb_chan->handle->chan._ref); | |
ff0f5728 MD |
1570 | } |
1571 | ||
249cffb5 | 1572 | int lttng_ust_ctl_channel_get_wakeup_fd(struct lttng_ust_ctl_consumer_channel *chan) |
ff0f5728 MD |
1573 | { |
1574 | if (!chan) | |
1575 | return -EINVAL; | |
07539b34 MD |
1576 | return shm_get_wakeup_fd(chan->chan->priv->rb_chan->handle, |
1577 | &chan->chan->priv->rb_chan->handle->chan._ref); | |
ff0f5728 MD |
1578 | } |
1579 | ||
249cffb5 | 1580 | int lttng_ust_ctl_stream_get_wait_fd(struct lttng_ust_ctl_consumer_stream *stream) |
6e922b24 | 1581 | { |
b5457df5 | 1582 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1583 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
74d81a6c MD |
1584 | |
1585 | if (!stream) | |
1586 | return -EINVAL; | |
1587 | buf = stream->buf; | |
1588 | consumer_chan = stream->chan; | |
07539b34 | 1589 | return shm_get_wait_fd(consumer_chan->chan->priv->rb_chan->handle, &buf->self._ref); |
74d81a6c MD |
1590 | } |
1591 | ||
249cffb5 | 1592 | int lttng_ust_ctl_stream_get_wakeup_fd(struct lttng_ust_ctl_consumer_stream *stream) |
74d81a6c | 1593 | { |
b5457df5 | 1594 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1595 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
74d81a6c MD |
1596 | |
1597 | if (!stream) | |
1598 | return -EINVAL; | |
1599 | buf = stream->buf; | |
1600 | consumer_chan = stream->chan; | |
07539b34 | 1601 | return shm_get_wakeup_fd(consumer_chan->chan->priv->rb_chan->handle, &buf->self._ref); |
6e922b24 MD |
1602 | } |
1603 | ||
57773204 MD |
1604 | /* For mmap mode, readable without "get" operation */ |
1605 | ||
249cffb5 | 1606 | void *lttng_ust_ctl_get_mmap_base(struct lttng_ust_ctl_consumer_stream *stream) |
9095efe9 | 1607 | { |
b5457df5 | 1608 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1609 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
63b3205f MD |
1610 | struct lttng_ust_sigbus_range range; |
1611 | void *p; | |
74d81a6c MD |
1612 | |
1613 | if (!stream) | |
9bfc503d | 1614 | return NULL; |
74d81a6c MD |
1615 | buf = stream->buf; |
1616 | consumer_chan = stream->chan; | |
63b3205f MD |
1617 | if (sigbus_begin()) |
1618 | return NULL; | |
1619 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
1620 | stream->memory_map_size); | |
1621 | p = shmp(consumer_chan->chan->priv->rb_chan->handle, buf->backend.memory_map); | |
1622 | lttng_ust_sigbus_del_range(&range); | |
1623 | sigbus_end(); | |
1624 | return p; /* Users of this pointer should check for sigbus. */ | |
9095efe9 MD |
1625 | } |
1626 | ||
57773204 | 1627 | /* returns the length to mmap. */ |
249cffb5 | 1628 | int lttng_ust_ctl_get_mmap_len(struct lttng_ust_ctl_consumer_stream *stream, |
57773204 MD |
1629 | unsigned long *len) |
1630 | { | |
249cffb5 | 1631 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
57773204 | 1632 | unsigned long mmap_buf_len; |
b5457df5 | 1633 | struct lttng_ust_ring_buffer_channel *rb_chan; |
57773204 | 1634 | |
74d81a6c | 1635 | if (!stream) |
9bfc503d | 1636 | return -EINVAL; |
74d81a6c | 1637 | consumer_chan = stream->chan; |
07539b34 MD |
1638 | rb_chan = consumer_chan->chan->priv->rb_chan; |
1639 | if (rb_chan->backend.config.output != RING_BUFFER_MMAP) | |
57773204 | 1640 | return -EINVAL; |
07539b34 MD |
1641 | mmap_buf_len = rb_chan->backend.buf_size; |
1642 | if (rb_chan->backend.extra_reader_sb) | |
1643 | mmap_buf_len += rb_chan->backend.subbuf_size; | |
57773204 MD |
1644 | if (mmap_buf_len > INT_MAX) |
1645 | return -EFBIG; | |
1646 | *len = mmap_buf_len; | |
1647 | return 0; | |
1648 | } | |
1649 | ||
1650 | /* returns the maximum size for sub-buffers. */ | |
249cffb5 | 1651 | int lttng_ust_ctl_get_max_subbuf_size(struct lttng_ust_ctl_consumer_stream *stream, |
57773204 MD |
1652 | unsigned long *len) |
1653 | { | |
249cffb5 | 1654 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
b5457df5 | 1655 | struct lttng_ust_ring_buffer_channel *rb_chan; |
57773204 | 1656 | |
74d81a6c | 1657 | if (!stream) |
9bfc503d | 1658 | return -EINVAL; |
74d81a6c | 1659 | consumer_chan = stream->chan; |
07539b34 MD |
1660 | rb_chan = consumer_chan->chan->priv->rb_chan; |
1661 | *len = rb_chan->backend.subbuf_size; | |
57773204 MD |
1662 | return 0; |
1663 | } | |
1664 | ||
1665 | /* | |
1666 | * For mmap mode, operate on the current packet (between get/put or | |
1667 | * get_next/put_next). | |
1668 | */ | |
1669 | ||
1670 | /* returns the offset of the subbuffer belonging to the mmap reader. */ | |
249cffb5 | 1671 | int lttng_ust_ctl_get_mmap_read_offset(struct lttng_ust_ctl_consumer_stream *stream, |
74d81a6c | 1672 | unsigned long *off) |
57773204 | 1673 | { |
b5457df5 | 1674 | struct lttng_ust_ring_buffer_channel *rb_chan; |
57773204 | 1675 | unsigned long sb_bindex; |
b5457df5 | 1676 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1677 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
b5457df5 MD |
1678 | struct lttng_ust_ring_buffer_backend_pages_shmp *barray_idx; |
1679 | struct lttng_ust_ring_buffer_backend_pages *pages; | |
63b3205f MD |
1680 | struct lttng_ust_sigbus_range range; |
1681 | int ret; | |
57773204 | 1682 | |
74d81a6c | 1683 | if (!stream) |
9bfc503d | 1684 | return -EINVAL; |
74d81a6c MD |
1685 | buf = stream->buf; |
1686 | consumer_chan = stream->chan; | |
07539b34 MD |
1687 | rb_chan = consumer_chan->chan->priv->rb_chan; |
1688 | if (rb_chan->backend.config.output != RING_BUFFER_MMAP) | |
57773204 | 1689 | return -EINVAL; |
63b3205f MD |
1690 | |
1691 | if (sigbus_begin()) | |
1692 | return -EIO; | |
1693 | ret = 0; | |
1694 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
1695 | stream->memory_map_size); | |
1696 | ||
07539b34 | 1697 | sb_bindex = subbuffer_id_get_index(&rb_chan->backend.config, |
32ce8569 | 1698 | buf->backend.buf_rsb.id); |
07539b34 | 1699 | barray_idx = shmp_index(rb_chan->handle, buf->backend.array, |
34daae3e | 1700 | sb_bindex); |
63b3205f MD |
1701 | if (!barray_idx) { |
1702 | ret = -EINVAL; | |
1703 | goto end; | |
1704 | } | |
07539b34 | 1705 | pages = shmp(rb_chan->handle, barray_idx->shmp); |
63b3205f MD |
1706 | if (!pages) { |
1707 | ret = -EINVAL; | |
1708 | goto end; | |
1709 | } | |
34daae3e | 1710 | *off = pages->mmap_offset; |
63b3205f MD |
1711 | end: |
1712 | lttng_ust_sigbus_del_range(&range); | |
1713 | sigbus_end(); | |
1714 | return ret; | |
57773204 MD |
1715 | } |
1716 | ||
1717 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
249cffb5 | 1718 | int lttng_ust_ctl_get_subbuf_size(struct lttng_ust_ctl_consumer_stream *stream, |
74d81a6c | 1719 | unsigned long *len) |
57773204 | 1720 | { |
249cffb5 | 1721 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
b5457df5 MD |
1722 | struct lttng_ust_ring_buffer_channel *rb_chan; |
1723 | struct lttng_ust_ring_buffer *buf; | |
63b3205f | 1724 | struct lttng_ust_sigbus_range range; |
57773204 | 1725 | |
74d81a6c | 1726 | if (!stream) |
9bfc503d MD |
1727 | return -EINVAL; |
1728 | ||
74d81a6c MD |
1729 | buf = stream->buf; |
1730 | consumer_chan = stream->chan; | |
07539b34 | 1731 | rb_chan = consumer_chan->chan->priv->rb_chan; |
63b3205f MD |
1732 | if (sigbus_begin()) |
1733 | return -EIO; | |
1734 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
1735 | stream->memory_map_size); | |
07539b34 MD |
1736 | *len = lib_ring_buffer_get_read_data_size(&rb_chan->backend.config, buf, |
1737 | rb_chan->handle); | |
63b3205f MD |
1738 | lttng_ust_sigbus_del_range(&range); |
1739 | sigbus_end(); | |
57773204 MD |
1740 | return 0; |
1741 | } | |
1742 | ||
1743 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
249cffb5 | 1744 | int lttng_ust_ctl_get_padded_subbuf_size(struct lttng_ust_ctl_consumer_stream *stream, |
74d81a6c | 1745 | unsigned long *len) |
57773204 | 1746 | { |
249cffb5 | 1747 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
b5457df5 MD |
1748 | struct lttng_ust_ring_buffer_channel *rb_chan; |
1749 | struct lttng_ust_ring_buffer *buf; | |
63b3205f | 1750 | struct lttng_ust_sigbus_range range; |
57773204 | 1751 | |
74d81a6c | 1752 | if (!stream) |
9bfc503d | 1753 | return -EINVAL; |
74d81a6c MD |
1754 | buf = stream->buf; |
1755 | consumer_chan = stream->chan; | |
07539b34 | 1756 | rb_chan = consumer_chan->chan->priv->rb_chan; |
63b3205f MD |
1757 | if (sigbus_begin()) |
1758 | return -EIO; | |
1759 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
1760 | stream->memory_map_size); | |
07539b34 MD |
1761 | *len = lib_ring_buffer_get_read_data_size(&rb_chan->backend.config, buf, |
1762 | rb_chan->handle); | |
b72687b8 | 1763 | *len = LTTNG_UST_PAGE_ALIGN(*len); |
63b3205f MD |
1764 | lttng_ust_sigbus_del_range(&range); |
1765 | sigbus_end(); | |
57773204 MD |
1766 | return 0; |
1767 | } | |
1768 | ||
1769 | /* Get exclusive read access to the next sub-buffer that can be read. */ | |
249cffb5 | 1770 | int lttng_ust_ctl_get_next_subbuf(struct lttng_ust_ctl_consumer_stream *stream) |
57773204 | 1771 | { |
b5457df5 | 1772 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1773 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
63b3205f MD |
1774 | struct lttng_ust_sigbus_range range; |
1775 | int ret; | |
9bfc503d | 1776 | |
74d81a6c MD |
1777 | if (!stream) |
1778 | return -EINVAL; | |
1779 | buf = stream->buf; | |
1780 | consumer_chan = stream->chan; | |
63b3205f MD |
1781 | if (sigbus_begin()) |
1782 | return -EIO; | |
1783 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
1784 | stream->memory_map_size); | |
1785 | ret = lib_ring_buffer_get_next_subbuf(buf, | |
07539b34 | 1786 | consumer_chan->chan->priv->rb_chan->handle); |
63b3205f MD |
1787 | lttng_ust_sigbus_del_range(&range); |
1788 | sigbus_end(); | |
1789 | return ret; | |
57773204 MD |
1790 | } |
1791 | ||
57773204 | 1792 | /* Release exclusive sub-buffer access, move consumer forward. */ |
249cffb5 | 1793 | int lttng_ust_ctl_put_next_subbuf(struct lttng_ust_ctl_consumer_stream *stream) |
57773204 | 1794 | { |
b5457df5 | 1795 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1796 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
63b3205f | 1797 | struct lttng_ust_sigbus_range range; |
9bfc503d | 1798 | |
74d81a6c MD |
1799 | if (!stream) |
1800 | return -EINVAL; | |
1801 | buf = stream->buf; | |
1802 | consumer_chan = stream->chan; | |
63b3205f MD |
1803 | if (sigbus_begin()) |
1804 | return -EIO; | |
1805 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
1806 | stream->memory_map_size); | |
07539b34 | 1807 | lib_ring_buffer_put_next_subbuf(buf, consumer_chan->chan->priv->rb_chan->handle); |
63b3205f MD |
1808 | lttng_ust_sigbus_del_range(&range); |
1809 | sigbus_end(); | |
57773204 MD |
1810 | return 0; |
1811 | } | |
1812 | ||
1813 | /* snapshot */ | |
1814 | ||
1815 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
249cffb5 | 1816 | int lttng_ust_ctl_snapshot(struct lttng_ust_ctl_consumer_stream *stream) |
57773204 | 1817 | { |
b5457df5 | 1818 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1819 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
63b3205f MD |
1820 | struct lttng_ust_sigbus_range range; |
1821 | int ret; | |
9bfc503d | 1822 | |
74d81a6c MD |
1823 | if (!stream) |
1824 | return -EINVAL; | |
1825 | buf = stream->buf; | |
1826 | consumer_chan = stream->chan; | |
63b3205f MD |
1827 | if (sigbus_begin()) |
1828 | return -EIO; | |
1829 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
1830 | stream->memory_map_size); | |
1831 | ret = lib_ring_buffer_snapshot(buf, &buf->cons_snapshot, | |
07539b34 | 1832 | &buf->prod_snapshot, consumer_chan->chan->priv->rb_chan->handle); |
63b3205f MD |
1833 | lttng_ust_sigbus_del_range(&range); |
1834 | sigbus_end(); | |
1835 | return ret; | |
57773204 MD |
1836 | } |
1837 | ||
f45930b7 JG |
1838 | /* |
1839 | * Get a snapshot of the current ring buffer producer and consumer positions | |
1840 | * even if the consumed and produced positions are contained within the same | |
1841 | * subbuffer. | |
1842 | */ | |
249cffb5 | 1843 | int lttng_ust_ctl_snapshot_sample_positions(struct lttng_ust_ctl_consumer_stream *stream) |
f45930b7 | 1844 | { |
b5457df5 | 1845 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1846 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
63b3205f MD |
1847 | struct lttng_ust_sigbus_range range; |
1848 | int ret; | |
f45930b7 JG |
1849 | |
1850 | if (!stream) | |
1851 | return -EINVAL; | |
1852 | buf = stream->buf; | |
1853 | consumer_chan = stream->chan; | |
63b3205f MD |
1854 | if (sigbus_begin()) |
1855 | return -EIO; | |
1856 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
1857 | stream->memory_map_size); | |
1858 | ret = lib_ring_buffer_snapshot_sample_positions(buf, | |
f45930b7 | 1859 | &buf->cons_snapshot, &buf->prod_snapshot, |
07539b34 | 1860 | consumer_chan->chan->priv->rb_chan->handle); |
63b3205f MD |
1861 | lttng_ust_sigbus_del_range(&range); |
1862 | sigbus_end(); | |
1863 | return ret; | |
f45930b7 JG |
1864 | } |
1865 | ||
57773204 | 1866 | /* Get the consumer position (iteration start) */ |
249cffb5 | 1867 | int lttng_ust_ctl_snapshot_get_consumed(struct lttng_ust_ctl_consumer_stream *stream, |
74d81a6c | 1868 | unsigned long *pos) |
57773204 | 1869 | { |
b5457df5 | 1870 | struct lttng_ust_ring_buffer *buf; |
9bfc503d | 1871 | |
74d81a6c MD |
1872 | if (!stream) |
1873 | return -EINVAL; | |
1874 | buf = stream->buf; | |
57773204 MD |
1875 | *pos = buf->cons_snapshot; |
1876 | return 0; | |
1877 | } | |
1878 | ||
1879 | /* Get the producer position (iteration end) */ | |
249cffb5 | 1880 | int lttng_ust_ctl_snapshot_get_produced(struct lttng_ust_ctl_consumer_stream *stream, |
74d81a6c | 1881 | unsigned long *pos) |
57773204 | 1882 | { |
b5457df5 | 1883 | struct lttng_ust_ring_buffer *buf; |
9bfc503d | 1884 | |
74d81a6c MD |
1885 | if (!stream) |
1886 | return -EINVAL; | |
1887 | buf = stream->buf; | |
57773204 MD |
1888 | *pos = buf->prod_snapshot; |
1889 | return 0; | |
1890 | } | |
1891 | ||
1892 | /* Get exclusive read access to the specified sub-buffer position */ | |
249cffb5 | 1893 | int lttng_ust_ctl_get_subbuf(struct lttng_ust_ctl_consumer_stream *stream, |
74d81a6c | 1894 | unsigned long *pos) |
57773204 | 1895 | { |
b5457df5 | 1896 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1897 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
63b3205f MD |
1898 | struct lttng_ust_sigbus_range range; |
1899 | int ret; | |
9bfc503d | 1900 | |
74d81a6c MD |
1901 | if (!stream) |
1902 | return -EINVAL; | |
1903 | buf = stream->buf; | |
1904 | consumer_chan = stream->chan; | |
63b3205f MD |
1905 | if (sigbus_begin()) |
1906 | return -EIO; | |
1907 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
1908 | stream->memory_map_size); | |
1909 | ret = lib_ring_buffer_get_subbuf(buf, *pos, | |
07539b34 | 1910 | consumer_chan->chan->priv->rb_chan->handle); |
63b3205f MD |
1911 | lttng_ust_sigbus_del_range(&range); |
1912 | sigbus_end(); | |
1913 | return ret; | |
57773204 MD |
1914 | } |
1915 | ||
1916 | /* Release exclusive sub-buffer access */ | |
249cffb5 | 1917 | int lttng_ust_ctl_put_subbuf(struct lttng_ust_ctl_consumer_stream *stream) |
57773204 | 1918 | { |
b5457df5 | 1919 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1920 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
63b3205f | 1921 | struct lttng_ust_sigbus_range range; |
9bfc503d | 1922 | |
74d81a6c MD |
1923 | if (!stream) |
1924 | return -EINVAL; | |
1925 | buf = stream->buf; | |
1926 | consumer_chan = stream->chan; | |
63b3205f MD |
1927 | if (sigbus_begin()) |
1928 | return -EIO; | |
1929 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
1930 | stream->memory_map_size); | |
07539b34 | 1931 | lib_ring_buffer_put_subbuf(buf, consumer_chan->chan->priv->rb_chan->handle); |
63b3205f MD |
1932 | lttng_ust_sigbus_del_range(&range); |
1933 | sigbus_end(); | |
57773204 MD |
1934 | return 0; |
1935 | } | |
1936 | ||
63b3205f | 1937 | int lttng_ust_ctl_flush_buffer(struct lttng_ust_ctl_consumer_stream *stream, |
b52190f2 | 1938 | int producer_active) |
57773204 | 1939 | { |
b5457df5 | 1940 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1941 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
63b3205f | 1942 | struct lttng_ust_sigbus_range range; |
74d81a6c MD |
1943 | |
1944 | assert(stream); | |
1945 | buf = stream->buf; | |
1946 | consumer_chan = stream->chan; | |
63b3205f MD |
1947 | if (sigbus_begin()) |
1948 | return -EIO; | |
1949 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
1950 | stream->memory_map_size); | |
b52190f2 MD |
1951 | lib_ring_buffer_switch_slow(buf, |
1952 | producer_active ? SWITCH_ACTIVE : SWITCH_FLUSH, | |
07539b34 | 1953 | consumer_chan->chan->priv->rb_chan->handle); |
63b3205f MD |
1954 | lttng_ust_sigbus_del_range(&range); |
1955 | sigbus_end(); | |
1956 | return 0; | |
74d81a6c MD |
1957 | } |
1958 | ||
63b3205f | 1959 | int lttng_ust_ctl_clear_buffer(struct lttng_ust_ctl_consumer_stream *stream) |
beca55a1 | 1960 | { |
b5457df5 | 1961 | struct lttng_ust_ring_buffer *buf; |
249cffb5 | 1962 | struct lttng_ust_ctl_consumer_channel *consumer_chan; |
63b3205f | 1963 | struct lttng_ust_sigbus_range range; |
beca55a1 MD |
1964 | |
1965 | assert(stream); | |
1966 | buf = stream->buf; | |
1967 | consumer_chan = stream->chan; | |
63b3205f MD |
1968 | if (sigbus_begin()) |
1969 | return -EIO; | |
1970 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
1971 | stream->memory_map_size); | |
beca55a1 | 1972 | lib_ring_buffer_switch_slow(buf, SWITCH_ACTIVE, |
07539b34 MD |
1973 | consumer_chan->chan->priv->rb_chan->handle); |
1974 | lib_ring_buffer_clear_reader(buf, consumer_chan->chan->priv->rb_chan->handle); | |
63b3205f MD |
1975 | lttng_ust_sigbus_del_range(&range); |
1976 | sigbus_end(); | |
1977 | return 0; | |
beca55a1 MD |
1978 | } |
1979 | ||
b2f3252a JD |
1980 | static |
1981 | struct lttng_ust_client_lib_ring_buffer_client_cb *get_client_cb( | |
b5457df5 MD |
1982 | struct lttng_ust_ring_buffer *buf __attribute__((unused)), |
1983 | struct lttng_ust_ring_buffer_channel *chan) | |
b2f3252a | 1984 | { |
b5457df5 | 1985 | const struct lttng_ust_ring_buffer_config *config; |
b2f3252a JD |
1986 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; |
1987 | ||
b2f3252a JD |
1988 | config = &chan->backend.config; |
1989 | if (!config->cb_ptr) | |
1990 | return NULL; | |
1991 | client_cb = caa_container_of(config->cb_ptr, | |
1992 | struct lttng_ust_client_lib_ring_buffer_client_cb, | |
1993 | parent); | |
1994 | return client_cb; | |
1995 | } | |
1996 | ||
249cffb5 | 1997 | int lttng_ust_ctl_get_timestamp_begin(struct lttng_ust_ctl_consumer_stream *stream, |
b2f3252a JD |
1998 | uint64_t *timestamp_begin) |
1999 | { | |
2000 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
2001 | struct lttng_ust_ring_buffer_channel *chan; |
2002 | struct lttng_ust_ring_buffer *buf; | |
63b3205f MD |
2003 | struct lttng_ust_sigbus_range range; |
2004 | int ret; | |
b2f3252a JD |
2005 | |
2006 | if (!stream || !timestamp_begin) | |
2007 | return -EINVAL; | |
e1919a41 | 2008 | buf = stream->buf; |
07539b34 MD |
2009 | chan = stream->chan->chan->priv->rb_chan; |
2010 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
2011 | if (!client_cb) |
2012 | return -ENOSYS; | |
63b3205f MD |
2013 | if (sigbus_begin()) |
2014 | return -EIO; | |
2015 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
2016 | stream->memory_map_size); | |
2017 | ret = client_cb->timestamp_begin(buf, chan, timestamp_begin); | |
2018 | lttng_ust_sigbus_del_range(&range); | |
2019 | sigbus_end(); | |
2020 | return ret; | |
b2f3252a JD |
2021 | } |
2022 | ||
249cffb5 | 2023 | int lttng_ust_ctl_get_timestamp_end(struct lttng_ust_ctl_consumer_stream *stream, |
b2f3252a JD |
2024 | uint64_t *timestamp_end) |
2025 | { | |
2026 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
2027 | struct lttng_ust_ring_buffer_channel *chan; |
2028 | struct lttng_ust_ring_buffer *buf; | |
63b3205f MD |
2029 | struct lttng_ust_sigbus_range range; |
2030 | int ret; | |
b2f3252a JD |
2031 | |
2032 | if (!stream || !timestamp_end) | |
2033 | return -EINVAL; | |
e1919a41 | 2034 | buf = stream->buf; |
07539b34 MD |
2035 | chan = stream->chan->chan->priv->rb_chan; |
2036 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
2037 | if (!client_cb) |
2038 | return -ENOSYS; | |
63b3205f MD |
2039 | if (sigbus_begin()) |
2040 | return -EIO; | |
2041 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
2042 | stream->memory_map_size); | |
2043 | ret = client_cb->timestamp_end(buf, chan, timestamp_end); | |
2044 | lttng_ust_sigbus_del_range(&range); | |
2045 | sigbus_end(); | |
2046 | return ret; | |
b2f3252a JD |
2047 | } |
2048 | ||
249cffb5 | 2049 | int lttng_ust_ctl_get_events_discarded(struct lttng_ust_ctl_consumer_stream *stream, |
b2f3252a JD |
2050 | uint64_t *events_discarded) |
2051 | { | |
2052 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
2053 | struct lttng_ust_ring_buffer_channel *chan; |
2054 | struct lttng_ust_ring_buffer *buf; | |
63b3205f MD |
2055 | struct lttng_ust_sigbus_range range; |
2056 | int ret; | |
b2f3252a JD |
2057 | |
2058 | if (!stream || !events_discarded) | |
2059 | return -EINVAL; | |
e1919a41 | 2060 | buf = stream->buf; |
07539b34 MD |
2061 | chan = stream->chan->chan->priv->rb_chan; |
2062 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
2063 | if (!client_cb) |
2064 | return -ENOSYS; | |
63b3205f MD |
2065 | if (sigbus_begin()) |
2066 | return -EIO; | |
2067 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
2068 | stream->memory_map_size); | |
2069 | ret = client_cb->events_discarded(buf, chan, events_discarded); | |
2070 | lttng_ust_sigbus_del_range(&range); | |
2071 | sigbus_end(); | |
2072 | return ret; | |
b2f3252a JD |
2073 | } |
2074 | ||
249cffb5 | 2075 | int lttng_ust_ctl_get_content_size(struct lttng_ust_ctl_consumer_stream *stream, |
b2f3252a JD |
2076 | uint64_t *content_size) |
2077 | { | |
2078 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
2079 | struct lttng_ust_ring_buffer_channel *chan; |
2080 | struct lttng_ust_ring_buffer *buf; | |
63b3205f MD |
2081 | struct lttng_ust_sigbus_range range; |
2082 | int ret; | |
b2f3252a JD |
2083 | |
2084 | if (!stream || !content_size) | |
2085 | return -EINVAL; | |
e1919a41 | 2086 | buf = stream->buf; |
07539b34 MD |
2087 | chan = stream->chan->chan->priv->rb_chan; |
2088 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
2089 | if (!client_cb) |
2090 | return -ENOSYS; | |
63b3205f MD |
2091 | if (sigbus_begin()) |
2092 | return -EIO; | |
2093 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
2094 | stream->memory_map_size); | |
2095 | ret = client_cb->content_size(buf, chan, content_size); | |
2096 | lttng_ust_sigbus_del_range(&range); | |
2097 | sigbus_end(); | |
2098 | return ret; | |
b2f3252a JD |
2099 | } |
2100 | ||
249cffb5 | 2101 | int lttng_ust_ctl_get_packet_size(struct lttng_ust_ctl_consumer_stream *stream, |
b2f3252a JD |
2102 | uint64_t *packet_size) |
2103 | { | |
2104 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
2105 | struct lttng_ust_ring_buffer_channel *chan; |
2106 | struct lttng_ust_ring_buffer *buf; | |
63b3205f MD |
2107 | struct lttng_ust_sigbus_range range; |
2108 | int ret; | |
b2f3252a JD |
2109 | |
2110 | if (!stream || !packet_size) | |
2111 | return -EINVAL; | |
e1919a41 | 2112 | buf = stream->buf; |
07539b34 MD |
2113 | chan = stream->chan->chan->priv->rb_chan; |
2114 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
2115 | if (!client_cb) |
2116 | return -ENOSYS; | |
63b3205f MD |
2117 | if (sigbus_begin()) |
2118 | return -EIO; | |
2119 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
2120 | stream->memory_map_size); | |
2121 | ret = client_cb->packet_size(buf, chan, packet_size); | |
2122 | lttng_ust_sigbus_del_range(&range); | |
2123 | sigbus_end(); | |
2124 | return ret; | |
b2f3252a JD |
2125 | } |
2126 | ||
249cffb5 | 2127 | int lttng_ust_ctl_get_stream_id(struct lttng_ust_ctl_consumer_stream *stream, |
b2f3252a JD |
2128 | uint64_t *stream_id) |
2129 | { | |
2130 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
2131 | struct lttng_ust_ring_buffer_channel *chan; |
2132 | struct lttng_ust_ring_buffer *buf; | |
63b3205f MD |
2133 | struct lttng_ust_sigbus_range range; |
2134 | int ret; | |
b2f3252a JD |
2135 | |
2136 | if (!stream || !stream_id) | |
2137 | return -EINVAL; | |
e1919a41 | 2138 | buf = stream->buf; |
07539b34 MD |
2139 | chan = stream->chan->chan->priv->rb_chan; |
2140 | client_cb = get_client_cb(buf, chan); | |
b2f3252a JD |
2141 | if (!client_cb) |
2142 | return -ENOSYS; | |
63b3205f MD |
2143 | if (sigbus_begin()) |
2144 | return -EIO; | |
2145 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
2146 | stream->memory_map_size); | |
2147 | ret = client_cb->stream_id(buf, chan, stream_id); | |
2148 | lttng_ust_sigbus_del_range(&range); | |
2149 | sigbus_end(); | |
2150 | return ret; | |
b2f3252a JD |
2151 | } |
2152 | ||
249cffb5 | 2153 | int lttng_ust_ctl_get_current_timestamp(struct lttng_ust_ctl_consumer_stream *stream, |
fca361e8 JD |
2154 | uint64_t *ts) |
2155 | { | |
2156 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
2157 | struct lttng_ust_ring_buffer_channel *chan; |
2158 | struct lttng_ust_ring_buffer *buf; | |
63b3205f MD |
2159 | struct lttng_ust_sigbus_range range; |
2160 | int ret; | |
fca361e8 JD |
2161 | |
2162 | if (!stream || !ts) | |
2163 | return -EINVAL; | |
e1919a41 | 2164 | buf = stream->buf; |
07539b34 MD |
2165 | chan = stream->chan->chan->priv->rb_chan; |
2166 | client_cb = get_client_cb(buf, chan); | |
fca361e8 JD |
2167 | if (!client_cb || !client_cb->current_timestamp) |
2168 | return -ENOSYS; | |
63b3205f MD |
2169 | if (sigbus_begin()) |
2170 | return -EIO; | |
2171 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
2172 | stream->memory_map_size); | |
2173 | ret = client_cb->current_timestamp(buf, chan, ts); | |
2174 | lttng_ust_sigbus_del_range(&range); | |
2175 | sigbus_end(); | |
2176 | return ret; | |
fca361e8 JD |
2177 | } |
2178 | ||
249cffb5 | 2179 | int lttng_ust_ctl_get_sequence_number(struct lttng_ust_ctl_consumer_stream *stream, |
1ff31389 JD |
2180 | uint64_t *seq) |
2181 | { | |
2182 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
2183 | struct lttng_ust_ring_buffer_channel *chan; |
2184 | struct lttng_ust_ring_buffer *buf; | |
63b3205f MD |
2185 | struct lttng_ust_sigbus_range range; |
2186 | int ret; | |
1ff31389 JD |
2187 | |
2188 | if (!stream || !seq) | |
2189 | return -EINVAL; | |
2190 | buf = stream->buf; | |
07539b34 MD |
2191 | chan = stream->chan->chan->priv->rb_chan; |
2192 | client_cb = get_client_cb(buf, chan); | |
1ff31389 JD |
2193 | if (!client_cb || !client_cb->sequence_number) |
2194 | return -ENOSYS; | |
63b3205f MD |
2195 | if (sigbus_begin()) |
2196 | return -EIO; | |
2197 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
2198 | stream->memory_map_size); | |
2199 | ret = client_cb->sequence_number(buf, chan, seq); | |
2200 | lttng_ust_sigbus_del_range(&range); | |
2201 | sigbus_end(); | |
2202 | return ret; | |
1ff31389 JD |
2203 | } |
2204 | ||
249cffb5 | 2205 | int lttng_ust_ctl_get_instance_id(struct lttng_ust_ctl_consumer_stream *stream, |
45a00b05 JD |
2206 | uint64_t *id) |
2207 | { | |
2208 | struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb; | |
b5457df5 MD |
2209 | struct lttng_ust_ring_buffer_channel *chan; |
2210 | struct lttng_ust_ring_buffer *buf; | |
63b3205f MD |
2211 | struct lttng_ust_sigbus_range range; |
2212 | int ret; | |
45a00b05 JD |
2213 | |
2214 | if (!stream || !id) | |
2215 | return -EINVAL; | |
2216 | buf = stream->buf; | |
07539b34 MD |
2217 | chan = stream->chan->chan->priv->rb_chan; |
2218 | client_cb = get_client_cb(buf, chan); | |
45a00b05 JD |
2219 | if (!client_cb) |
2220 | return -ENOSYS; | |
63b3205f MD |
2221 | if (sigbus_begin()) |
2222 | return -EIO; | |
2223 | lttng_ust_sigbus_add_range(&range, stream->memory_map_addr, | |
2224 | stream->memory_map_size); | |
2225 | ret = client_cb->instance_id(buf, chan, id); | |
2226 | lttng_ust_sigbus_del_range(&range); | |
2227 | sigbus_end(); | |
2228 | return ret; | |
45a00b05 JD |
2229 | } |
2230 | ||
eeef0055 | 2231 | #ifdef HAVE_LINUX_PERF_EVENT_H |
57201bb3 | 2232 | |
249cffb5 | 2233 | int lttng_ust_ctl_has_perf_counters(void) |
57201bb3 MD |
2234 | { |
2235 | return 1; | |
2236 | } | |
2237 | ||
2238 | #else | |
2239 | ||
249cffb5 | 2240 | int lttng_ust_ctl_has_perf_counters(void) |
57201bb3 MD |
2241 | { |
2242 | return 0; | |
2243 | } | |
2244 | ||
2245 | #endif | |
2246 | ||
a834901f MD |
2247 | #ifdef __linux__ |
2248 | /* | |
2249 | * Override application pid/uid/gid with unix socket credentials. If | |
2250 | * the application announced a pid matching our view, it means it is | |
2251 | * within the same pid namespace, so expose the ppid provided by the | |
2252 | * application. | |
2253 | */ | |
2254 | static | |
2255 | int get_cred(int sock, | |
249cffb5 | 2256 | const struct lttng_ust_ctl_reg_msg *reg_msg, |
a834901f MD |
2257 | uint32_t *pid, |
2258 | uint32_t *ppid, | |
2259 | uint32_t *uid, | |
2260 | uint32_t *gid) | |
2261 | { | |
2262 | struct ucred ucred; | |
2263 | socklen_t ucred_len = sizeof(struct ucred); | |
2264 | int ret; | |
2265 | ||
2266 | ret = getsockopt(sock, SOL_SOCKET, SO_PEERCRED, &ucred, &ucred_len); | |
2267 | if (ret) { | |
2268 | return -LTTNG_UST_ERR_PEERCRED; | |
2269 | } | |
2270 | DBG("Unix socket peercred [ pid: %u, uid: %u, gid: %u ], " | |
2271 | "application registered claiming [ pid: %u, ppid: %u, uid: %u, gid: %u ]", | |
2272 | ucred.pid, ucred.uid, ucred.gid, | |
2273 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); | |
2274 | if (!ucred.pid) { | |
2275 | ERR("Unix socket credential pid=0. Refusing application in distinct, non-nested pid namespace."); | |
2276 | return -LTTNG_UST_ERR_PEERCRED_PID; | |
2277 | } | |
2278 | *pid = ucred.pid; | |
2279 | *uid = ucred.uid; | |
2280 | *gid = ucred.gid; | |
2281 | if (ucred.pid == reg_msg->pid) { | |
2282 | *ppid = reg_msg->ppid; | |
2283 | } else { | |
2284 | *ppid = 0; | |
2285 | } | |
2286 | return 0; | |
2287 | } | |
2288 | #elif defined(__FreeBSD__) | |
2289 | #include <sys/ucred.h> | |
e494a9cd | 2290 | #include <sys/un.h> |
a834901f MD |
2291 | |
2292 | /* | |
2293 | * Override application uid/gid with unix socket credentials. Use the | |
2294 | * first group of the cr_groups. | |
2295 | * Use the pid and ppid provided by the application on registration. | |
2296 | */ | |
2297 | static | |
2298 | int get_cred(int sock, | |
249cffb5 | 2299 | const struct lttng_ust_ctl_reg_msg *reg_msg, |
a834901f MD |
2300 | uint32_t *pid, |
2301 | uint32_t *ppid, | |
2302 | uint32_t *uid, | |
2303 | uint32_t *gid) | |
2304 | { | |
2305 | struct xucred xucred; | |
2306 | socklen_t xucred_len = sizeof(struct xucred); | |
2307 | int ret; | |
2308 | ||
2309 | ret = getsockopt(sock, SOL_SOCKET, LOCAL_PEERCRED, &xucred, &xucred_len); | |
2310 | if (ret) { | |
2311 | return -LTTNG_UST_ERR_PEERCRED; | |
2312 | } | |
2313 | if (xucred.cr_version != XUCRED_VERSION || xucred.cr_ngroups < 1) { | |
2314 | return -LTTNG_UST_ERR_PEERCRED; | |
2315 | } | |
2316 | DBG("Unix socket peercred [ uid: %u, gid: %u ], " | |
2317 | "application registered claiming [ pid: %d, ppid: %d, uid: %u, gid: %u ]", | |
e494a9cd | 2318 | xucred.cr_uid, xucred.cr_groups[0], |
a834901f MD |
2319 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); |
2320 | *pid = reg_msg->pid; | |
2321 | *ppid = reg_msg->ppid; | |
e494a9cd | 2322 | *uid = xucred.cr_uid; |
a834901f MD |
2323 | *gid = xucred.cr_groups[0]; |
2324 | return 0; | |
2325 | } | |
2326 | #else | |
2327 | #warning "Using insecure fallback: trusting user id provided by registered applications. Please consider implementing use of unix socket credentials on your platform." | |
2328 | static | |
2329 | int get_cred(int sock, | |
249cffb5 | 2330 | const struct lttng_ust_ctl_reg_msg *reg_msg, |
a834901f MD |
2331 | uint32_t *pid, |
2332 | uint32_t *ppid, | |
2333 | uint32_t *uid, | |
2334 | uint32_t *gid) | |
2335 | { | |
2336 | DBG("Application registered claiming [ pid: %u, ppid: %d, uid: %u, gid: %u ]", | |
2337 | reg_msg->pid, reg_msg->ppid, reg_msg->uid, reg_msg->gid); | |
2338 | *pid = reg_msg->pid; | |
2339 | *ppid = reg_msg->ppid; | |
2340 | *uid = reg_msg->uid; | |
2341 | *gid = reg_msg->gid; | |
2342 | return 0; | |
2343 | } | |
2344 | #endif | |
2345 | ||
32ce8569 MD |
2346 | /* |
2347 | * Returns 0 on success, negative error value on error. | |
2348 | */ | |
249cffb5 MJ |
2349 | int lttng_ust_ctl_recv_reg_msg(int sock, |
2350 | enum lttng_ust_ctl_socket_type *type, | |
32ce8569 MD |
2351 | uint32_t *major, |
2352 | uint32_t *minor, | |
2353 | uint32_t *pid, | |
2354 | uint32_t *ppid, | |
2355 | uint32_t *uid, | |
2356 | uint32_t *gid, | |
2357 | uint32_t *bits_per_long, | |
2358 | uint32_t *uint8_t_alignment, | |
2359 | uint32_t *uint16_t_alignment, | |
2360 | uint32_t *uint32_t_alignment, | |
2361 | uint32_t *uint64_t_alignment, | |
2362 | uint32_t *long_alignment, | |
2363 | int *byte_order, | |
2364 | char *name) | |
2365 | { | |
2366 | ssize_t len; | |
249cffb5 | 2367 | struct lttng_ust_ctl_reg_msg reg_msg; |
32ce8569 MD |
2368 | |
2369 | len = ustcomm_recv_unix_sock(sock, ®_msg, sizeof(reg_msg)); | |
2370 | if (len > 0 && len != sizeof(reg_msg)) | |
2371 | return -EIO; | |
2372 | if (len == 0) | |
2373 | return -EPIPE; | |
2374 | if (len < 0) | |
2375 | return len; | |
2376 | ||
fd17d7ce | 2377 | if (reg_msg.magic == LTTNG_UST_ABI_COMM_MAGIC) { |
baa8acf3 MJ |
2378 | *byte_order = LTTNG_UST_BYTE_ORDER == LTTNG_UST_BIG_ENDIAN ? |
2379 | LTTNG_UST_BIG_ENDIAN : LTTNG_UST_LITTLE_ENDIAN; | |
2380 | } else if (reg_msg.magic == lttng_ust_bswap_32(LTTNG_UST_ABI_COMM_MAGIC)) { | |
2381 | *byte_order = LTTNG_UST_BYTE_ORDER == LTTNG_UST_BIG_ENDIAN ? | |
2382 | LTTNG_UST_LITTLE_ENDIAN : LTTNG_UST_BIG_ENDIAN; | |
32ce8569 MD |
2383 | } else { |
2384 | return -LTTNG_UST_ERR_INVAL_MAGIC; | |
2385 | } | |
2386 | switch (reg_msg.socket_type) { | |
249cffb5 | 2387 | case 0: *type = LTTNG_UST_CTL_SOCKET_CMD; |
32ce8569 | 2388 | break; |
249cffb5 | 2389 | case 1: *type = LTTNG_UST_CTL_SOCKET_NOTIFY; |
32ce8569 MD |
2390 | break; |
2391 | default: | |
2392 | return -LTTNG_UST_ERR_INVAL_SOCKET_TYPE; | |
2393 | } | |
2394 | *major = reg_msg.major; | |
2395 | *minor = reg_msg.minor; | |
32ce8569 MD |
2396 | *bits_per_long = reg_msg.bits_per_long; |
2397 | *uint8_t_alignment = reg_msg.uint8_t_alignment; | |
2398 | *uint16_t_alignment = reg_msg.uint16_t_alignment; | |
2399 | *uint32_t_alignment = reg_msg.uint32_t_alignment; | |
2400 | *uint64_t_alignment = reg_msg.uint64_t_alignment; | |
2401 | *long_alignment = reg_msg.long_alignment; | |
2402 | memcpy(name, reg_msg.name, LTTNG_UST_ABI_PROCNAME_LEN); | |
6a359b8a MD |
2403 | if (reg_msg.major < LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE || |
2404 | reg_msg.major > LTTNG_UST_ABI_MAJOR_VERSION) { | |
32ce8569 MD |
2405 | return -LTTNG_UST_ERR_UNSUP_MAJOR; |
2406 | } | |
a834901f | 2407 | return get_cred(sock, ®_msg, pid, ppid, uid, gid); |
32ce8569 MD |
2408 | } |
2409 | ||
249cffb5 | 2410 | int lttng_ust_ctl_recv_notify(int sock, enum lttng_ust_ctl_notify_cmd *notify_cmd) |
32ce8569 MD |
2411 | { |
2412 | struct ustcomm_notify_hdr header; | |
2413 | ssize_t len; | |
2414 | ||
2415 | len = ustcomm_recv_unix_sock(sock, &header, sizeof(header)); | |
2416 | if (len > 0 && len != sizeof(header)) | |
2417 | return -EIO; | |
2418 | if (len == 0) | |
2419 | return -EPIPE; | |
2420 | if (len < 0) | |
2421 | return len; | |
2422 | switch (header.notify_cmd) { | |
2423 | case 0: | |
249cffb5 | 2424 | *notify_cmd = LTTNG_UST_CTL_NOTIFY_CMD_EVENT; |
32ce8569 MD |
2425 | break; |
2426 | case 1: | |
249cffb5 | 2427 | *notify_cmd = LTTNG_UST_CTL_NOTIFY_CMD_CHANNEL; |
32ce8569 | 2428 | break; |
c785c634 | 2429 | case 2: |
249cffb5 | 2430 | *notify_cmd = LTTNG_UST_CTL_NOTIFY_CMD_ENUM; |
c785c634 | 2431 | break; |
32ce8569 MD |
2432 | default: |
2433 | return -EINVAL; | |
2434 | } | |
2435 | return 0; | |
2436 | } | |
2437 | ||
2438 | /* | |
2439 | * Returns 0 on success, negative error value on error. | |
2440 | */ | |
249cffb5 | 2441 | int lttng_ust_ctl_recv_register_event(int sock, |
32ce8569 MD |
2442 | int *session_objd, |
2443 | int *channel_objd, | |
2444 | char *event_name, | |
2445 | int *loglevel, | |
2446 | char **signature, | |
2447 | size_t *nr_fields, | |
249cffb5 | 2448 | struct lttng_ust_ctl_field **fields, |
32ce8569 MD |
2449 | char **model_emf_uri) |
2450 | { | |
2451 | ssize_t len; | |
2452 | struct ustcomm_notify_event_msg msg; | |
2453 | size_t signature_len, fields_len, model_emf_uri_len; | |
2454 | char *a_sign = NULL, *a_model_emf_uri = NULL; | |
249cffb5 | 2455 | struct lttng_ust_ctl_field *a_fields = NULL; |
32ce8569 MD |
2456 | |
2457 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2458 | if (len > 0 && len != sizeof(msg)) | |
2459 | return -EIO; | |
2460 | if (len == 0) | |
2461 | return -EPIPE; | |
2462 | if (len < 0) | |
2463 | return len; | |
2464 | ||
2465 | *session_objd = msg.session_objd; | |
2466 | *channel_objd = msg.channel_objd; | |
fd17d7ce MD |
2467 | strncpy(event_name, msg.event_name, LTTNG_UST_ABI_SYM_NAME_LEN); |
2468 | event_name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; | |
32ce8569 MD |
2469 | *loglevel = msg.loglevel; |
2470 | signature_len = msg.signature_len; | |
2471 | fields_len = msg.fields_len; | |
2472 | ||
2473 | if (fields_len % sizeof(*a_fields) != 0) { | |
2474 | return -EINVAL; | |
2475 | } | |
2476 | ||
2477 | model_emf_uri_len = msg.model_emf_uri_len; | |
2478 | ||
2479 | /* recv signature. contains at least \0. */ | |
2480 | a_sign = zmalloc(signature_len); | |
2481 | if (!a_sign) | |
2482 | return -ENOMEM; | |
2483 | len = ustcomm_recv_unix_sock(sock, a_sign, signature_len); | |
2484 | if (len > 0 && len != signature_len) { | |
2485 | len = -EIO; | |
2486 | goto signature_error; | |
2487 | } | |
2488 | if (len == 0) { | |
2489 | len = -EPIPE; | |
2490 | goto signature_error; | |
2491 | } | |
2492 | if (len < 0) { | |
2493 | goto signature_error; | |
2494 | } | |
2495 | /* Enforce end of string */ | |
111198c2 | 2496 | a_sign[signature_len - 1] = '\0'; |
32ce8569 MD |
2497 | |
2498 | /* recv fields */ | |
2499 | if (fields_len) { | |
2500 | a_fields = zmalloc(fields_len); | |
2501 | if (!a_fields) { | |
2502 | len = -ENOMEM; | |
2503 | goto signature_error; | |
2504 | } | |
2505 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2506 | if (len > 0 && len != fields_len) { | |
2507 | len = -EIO; | |
2508 | goto fields_error; | |
2509 | } | |
2510 | if (len == 0) { | |
2511 | len = -EPIPE; | |
2512 | goto fields_error; | |
2513 | } | |
2514 | if (len < 0) { | |
2515 | goto fields_error; | |
2516 | } | |
2517 | } | |
2518 | ||
2519 | if (model_emf_uri_len) { | |
2520 | /* recv model_emf_uri_len */ | |
2521 | a_model_emf_uri = zmalloc(model_emf_uri_len); | |
2522 | if (!a_model_emf_uri) { | |
2523 | len = -ENOMEM; | |
2524 | goto fields_error; | |
2525 | } | |
2526 | len = ustcomm_recv_unix_sock(sock, a_model_emf_uri, | |
2527 | model_emf_uri_len); | |
2528 | if (len > 0 && len != model_emf_uri_len) { | |
2529 | len = -EIO; | |
2530 | goto model_error; | |
2531 | } | |
2532 | if (len == 0) { | |
2533 | len = -EPIPE; | |
2534 | goto model_error; | |
2535 | } | |
2536 | if (len < 0) { | |
2537 | goto model_error; | |
2538 | } | |
2539 | /* Enforce end of string */ | |
2540 | a_model_emf_uri[model_emf_uri_len - 1] = '\0'; | |
2541 | } | |
2542 | ||
2543 | *signature = a_sign; | |
2544 | *nr_fields = fields_len / sizeof(*a_fields); | |
2545 | *fields = a_fields; | |
2546 | *model_emf_uri = a_model_emf_uri; | |
2547 | ||
2548 | return 0; | |
2549 | ||
2550 | model_error: | |
2551 | free(a_model_emf_uri); | |
2552 | fields_error: | |
2553 | free(a_fields); | |
2554 | signature_error: | |
2555 | free(a_sign); | |
2556 | return len; | |
2557 | } | |
2558 | ||
2559 | /* | |
2560 | * Returns 0 on success, negative error value on error. | |
2561 | */ | |
249cffb5 | 2562 | int lttng_ust_ctl_reply_register_event(int sock, |
32ce8569 MD |
2563 | uint32_t id, |
2564 | int ret_code) | |
2565 | { | |
2566 | ssize_t len; | |
2567 | struct { | |
2568 | struct ustcomm_notify_hdr header; | |
2569 | struct ustcomm_notify_event_reply r; | |
2570 | } reply; | |
2571 | ||
2572 | memset(&reply, 0, sizeof(reply)); | |
249cffb5 | 2573 | reply.header.notify_cmd = LTTNG_UST_CTL_NOTIFY_CMD_EVENT; |
32ce8569 MD |
2574 | reply.r.ret_code = ret_code; |
2575 | reply.r.event_id = id; | |
2576 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2577 | if (len > 0 && len != sizeof(reply)) | |
2578 | return -EIO; | |
2579 | if (len < 0) | |
2580 | return len; | |
2581 | return 0; | |
2582 | } | |
2583 | ||
c785c634 MD |
2584 | /* |
2585 | * Returns 0 on success, negative UST or system error value on error. | |
2586 | */ | |
249cffb5 | 2587 | int lttng_ust_ctl_recv_register_enum(int sock, |
c785c634 MD |
2588 | int *session_objd, |
2589 | char *enum_name, | |
249cffb5 | 2590 | struct lttng_ust_ctl_enum_entry **entries, |
c785c634 MD |
2591 | size_t *nr_entries) |
2592 | { | |
2593 | ssize_t len; | |
2594 | struct ustcomm_notify_enum_msg msg; | |
2595 | size_t entries_len; | |
249cffb5 | 2596 | struct lttng_ust_ctl_enum_entry *a_entries = NULL; |
c785c634 MD |
2597 | |
2598 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2599 | if (len > 0 && len != sizeof(msg)) | |
2600 | return -EIO; | |
2601 | if (len == 0) | |
2602 | return -EPIPE; | |
2603 | if (len < 0) | |
2604 | return len; | |
2605 | ||
2606 | *session_objd = msg.session_objd; | |
fd17d7ce MD |
2607 | strncpy(enum_name, msg.enum_name, LTTNG_UST_ABI_SYM_NAME_LEN); |
2608 | enum_name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; | |
c785c634 MD |
2609 | entries_len = msg.entries_len; |
2610 | ||
2611 | if (entries_len % sizeof(*a_entries) != 0) { | |
2612 | return -EINVAL; | |
2613 | } | |
2614 | ||
2615 | /* recv entries */ | |
2616 | if (entries_len) { | |
2617 | a_entries = zmalloc(entries_len); | |
2618 | if (!a_entries) | |
2619 | return -ENOMEM; | |
2620 | len = ustcomm_recv_unix_sock(sock, a_entries, entries_len); | |
2621 | if (len > 0 && len != entries_len) { | |
2622 | len = -EIO; | |
2623 | goto entries_error; | |
2624 | } | |
2625 | if (len == 0) { | |
2626 | len = -EPIPE; | |
2627 | goto entries_error; | |
2628 | } | |
2629 | if (len < 0) { | |
2630 | goto entries_error; | |
2631 | } | |
2632 | } | |
2633 | *nr_entries = entries_len / sizeof(*a_entries); | |
2634 | *entries = a_entries; | |
2635 | ||
2636 | return 0; | |
2637 | ||
2638 | entries_error: | |
2639 | free(a_entries); | |
2640 | return len; | |
2641 | } | |
2642 | ||
2643 | /* | |
2644 | * Returns 0 on success, negative error value on error. | |
2645 | */ | |
249cffb5 | 2646 | int lttng_ust_ctl_reply_register_enum(int sock, |
c785c634 MD |
2647 | uint64_t id, |
2648 | int ret_code) | |
2649 | { | |
2650 | ssize_t len; | |
2651 | struct { | |
2652 | struct ustcomm_notify_hdr header; | |
2653 | struct ustcomm_notify_enum_reply r; | |
2654 | } reply; | |
2655 | ||
2656 | memset(&reply, 0, sizeof(reply)); | |
249cffb5 | 2657 | reply.header.notify_cmd = LTTNG_UST_CTL_NOTIFY_CMD_ENUM; |
c785c634 MD |
2658 | reply.r.ret_code = ret_code; |
2659 | reply.r.enum_id = id; | |
2660 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2661 | if (len > 0 && len != sizeof(reply)) | |
2662 | return -EIO; | |
2663 | if (len < 0) | |
2664 | return len; | |
2665 | return 0; | |
2666 | } | |
2667 | ||
32ce8569 MD |
2668 | /* |
2669 | * Returns 0 on success, negative UST or system error value on error. | |
2670 | */ | |
249cffb5 | 2671 | int lttng_ust_ctl_recv_register_channel(int sock, |
32ce8569 MD |
2672 | int *session_objd, /* session descriptor (output) */ |
2673 | int *channel_objd, /* channel descriptor (output) */ | |
2674 | size_t *nr_fields, | |
249cffb5 | 2675 | struct lttng_ust_ctl_field **fields) |
32ce8569 MD |
2676 | { |
2677 | ssize_t len; | |
2678 | struct ustcomm_notify_channel_msg msg; | |
2679 | size_t fields_len; | |
249cffb5 | 2680 | struct lttng_ust_ctl_field *a_fields; |
32ce8569 MD |
2681 | |
2682 | len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg)); | |
2683 | if (len > 0 && len != sizeof(msg)) | |
2684 | return -EIO; | |
2685 | if (len == 0) | |
2686 | return -EPIPE; | |
2687 | if (len < 0) | |
2688 | return len; | |
2689 | ||
2690 | *session_objd = msg.session_objd; | |
2691 | *channel_objd = msg.channel_objd; | |
2692 | fields_len = msg.ctx_fields_len; | |
2693 | ||
2694 | if (fields_len % sizeof(*a_fields) != 0) { | |
2695 | return -EINVAL; | |
2696 | } | |
2697 | ||
2698 | /* recv fields */ | |
2699 | if (fields_len) { | |
2700 | a_fields = zmalloc(fields_len); | |
2701 | if (!a_fields) { | |
2702 | len = -ENOMEM; | |
2703 | goto alloc_error; | |
2704 | } | |
2705 | len = ustcomm_recv_unix_sock(sock, a_fields, fields_len); | |
2706 | if (len > 0 && len != fields_len) { | |
2707 | len = -EIO; | |
2708 | goto fields_error; | |
2709 | } | |
2710 | if (len == 0) { | |
2711 | len = -EPIPE; | |
2712 | goto fields_error; | |
2713 | } | |
2714 | if (len < 0) { | |
2715 | goto fields_error; | |
2716 | } | |
2717 | *fields = a_fields; | |
2718 | } else { | |
2719 | *fields = NULL; | |
2720 | } | |
2721 | *nr_fields = fields_len / sizeof(*a_fields); | |
2722 | return 0; | |
2723 | ||
2724 | fields_error: | |
2725 | free(a_fields); | |
2726 | alloc_error: | |
2727 | return len; | |
2728 | } | |
2729 | ||
2730 | /* | |
2731 | * Returns 0 on success, negative error value on error. | |
2732 | */ | |
249cffb5 | 2733 | int lttng_ust_ctl_reply_register_channel(int sock, |
32ce8569 | 2734 | uint32_t chan_id, |
249cffb5 | 2735 | enum lttng_ust_ctl_channel_header header_type, |
32ce8569 MD |
2736 | int ret_code) |
2737 | { | |
2738 | ssize_t len; | |
2739 | struct { | |
2740 | struct ustcomm_notify_hdr header; | |
2741 | struct ustcomm_notify_channel_reply r; | |
2742 | } reply; | |
2743 | ||
2744 | memset(&reply, 0, sizeof(reply)); | |
249cffb5 | 2745 | reply.header.notify_cmd = LTTNG_UST_CTL_NOTIFY_CMD_CHANNEL; |
32ce8569 MD |
2746 | reply.r.ret_code = ret_code; |
2747 | reply.r.chan_id = chan_id; | |
2748 | switch (header_type) { | |
249cffb5 | 2749 | case LTTNG_UST_CTL_CHANNEL_HEADER_COMPACT: |
32ce8569 MD |
2750 | reply.r.header_type = 1; |
2751 | break; | |
249cffb5 | 2752 | case LTTNG_UST_CTL_CHANNEL_HEADER_LARGE: |
32ce8569 MD |
2753 | reply.r.header_type = 2; |
2754 | break; | |
2755 | default: | |
2756 | reply.r.header_type = 0; | |
2757 | break; | |
2758 | } | |
2759 | len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply)); | |
2760 | if (len > 0 && len != sizeof(reply)) | |
2761 | return -EIO; | |
2762 | if (len < 0) | |
2763 | return len; | |
2764 | return 0; | |
2765 | } | |
2766 | ||
f53329f3 | 2767 | /* Regenerate the statedump. */ |
249cffb5 | 2768 | int lttng_ust_ctl_regenerate_statedump(int sock, int handle) |
f53329f3 JD |
2769 | { |
2770 | struct ustcomm_ust_msg lum; | |
2771 | struct ustcomm_ust_reply lur; | |
2772 | int ret; | |
2773 | ||
2774 | memset(&lum, 0, sizeof(lum)); | |
2775 | lum.handle = handle; | |
fd17d7ce | 2776 | lum.cmd = LTTNG_UST_ABI_SESSION_STATEDUMP; |
f53329f3 JD |
2777 | ret = ustcomm_send_app_cmd(sock, &lum, &lur); |
2778 | if (ret) | |
2779 | return ret; | |
2780 | DBG("Regenerated statedump for handle %u", handle); | |
2781 | return 0; | |
2782 | } | |
2783 | ||
ebabbf58 MD |
2784 | /* counter operations */ |
2785 | ||
249cffb5 | 2786 | int lttng_ust_ctl_get_nr_cpu_per_counter(void) |
ebabbf58 | 2787 | { |
74cc1f59 | 2788 | return num_possible_cpus(); |
ebabbf58 MD |
2789 | } |
2790 | ||
249cffb5 MJ |
2791 | struct lttng_ust_ctl_daemon_counter * |
2792 | lttng_ust_ctl_create_counter(size_t nr_dimensions, | |
2793 | const struct lttng_ust_ctl_counter_dimension *dimensions, | |
ebabbf58 MD |
2794 | int64_t global_sum_step, |
2795 | int global_counter_fd, | |
2796 | int nr_counter_cpu_fds, | |
2797 | const int *counter_cpu_fds, | |
249cffb5 MJ |
2798 | enum lttng_ust_ctl_counter_bitness bitness, |
2799 | enum lttng_ust_ctl_counter_arithmetic arithmetic, | |
81bc4972 MD |
2800 | uint32_t alloc_flags, |
2801 | bool coalesce_hits) | |
ebabbf58 MD |
2802 | { |
2803 | const char *transport_name; | |
249cffb5 | 2804 | struct lttng_ust_ctl_daemon_counter *counter; |
ebabbf58 MD |
2805 | struct lttng_counter_transport *transport; |
2806 | struct lttng_counter_dimension ust_dim[LTTNG_COUNTER_DIMENSION_MAX]; | |
2807 | size_t i; | |
2808 | ||
2809 | if (nr_dimensions > LTTNG_COUNTER_DIMENSION_MAX) | |
2810 | return NULL; | |
2811 | /* Currently, only per-cpu allocation is supported. */ | |
2812 | switch (alloc_flags) { | |
249cffb5 | 2813 | case LTTNG_UST_CTL_COUNTER_ALLOC_PER_CPU: |
ebabbf58 MD |
2814 | break; |
2815 | ||
249cffb5 MJ |
2816 | case LTTNG_UST_CTL_COUNTER_ALLOC_PER_CPU | LTTNG_UST_CTL_COUNTER_ALLOC_GLOBAL: |
2817 | case LTTNG_UST_CTL_COUNTER_ALLOC_GLOBAL: | |
ebabbf58 MD |
2818 | default: |
2819 | return NULL; | |
2820 | } | |
2821 | switch (bitness) { | |
249cffb5 | 2822 | case LTTNG_UST_CTL_COUNTER_BITNESS_32: |
ebabbf58 | 2823 | switch (arithmetic) { |
249cffb5 | 2824 | case LTTNG_UST_CTL_COUNTER_ARITHMETIC_MODULAR: |
ebabbf58 MD |
2825 | transport_name = "counter-per-cpu-32-modular"; |
2826 | break; | |
249cffb5 | 2827 | case LTTNG_UST_CTL_COUNTER_ARITHMETIC_SATURATION: |
ebabbf58 MD |
2828 | transport_name = "counter-per-cpu-32-saturation"; |
2829 | break; | |
2830 | default: | |
2831 | return NULL; | |
2832 | } | |
2833 | break; | |
249cffb5 | 2834 | case LTTNG_UST_CTL_COUNTER_BITNESS_64: |
ebabbf58 | 2835 | switch (arithmetic) { |
249cffb5 | 2836 | case LTTNG_UST_CTL_COUNTER_ARITHMETIC_MODULAR: |
ebabbf58 MD |
2837 | transport_name = "counter-per-cpu-64-modular"; |
2838 | break; | |
249cffb5 | 2839 | case LTTNG_UST_CTL_COUNTER_ARITHMETIC_SATURATION: |
ebabbf58 MD |
2840 | transport_name = "counter-per-cpu-64-saturation"; |
2841 | break; | |
2842 | default: | |
2843 | return NULL; | |
2844 | } | |
2845 | break; | |
2846 | default: | |
2847 | return NULL; | |
2848 | } | |
2849 | ||
2850 | transport = lttng_counter_transport_find(transport_name); | |
2851 | if (!transport) { | |
2852 | DBG("LTTng transport %s not found\n", | |
2853 | transport_name); | |
2854 | return NULL; | |
2855 | } | |
2856 | ||
2857 | counter = zmalloc(sizeof(*counter)); | |
2858 | if (!counter) | |
2859 | return NULL; | |
2860 | counter->attr = zmalloc(sizeof(*counter->attr)); | |
2861 | if (!counter->attr) | |
2862 | goto free_counter; | |
2863 | counter->attr->bitness = bitness; | |
2864 | counter->attr->arithmetic = arithmetic; | |
2865 | counter->attr->nr_dimensions = nr_dimensions; | |
2866 | counter->attr->global_sum_step = global_sum_step; | |
81bc4972 | 2867 | counter->attr->coalesce_hits = coalesce_hits; |
ebabbf58 MD |
2868 | for (i = 0; i < nr_dimensions; i++) |
2869 | counter->attr->dimensions[i] = dimensions[i]; | |
2870 | ||
2871 | for (i = 0; i < nr_dimensions; i++) { | |
2872 | ust_dim[i].size = dimensions[i].size; | |
2873 | ust_dim[i].underflow_index = dimensions[i].underflow_index; | |
2874 | ust_dim[i].overflow_index = dimensions[i].overflow_index; | |
2875 | ust_dim[i].has_underflow = dimensions[i].has_underflow; | |
2876 | ust_dim[i].has_overflow = dimensions[i].has_overflow; | |
2877 | } | |
2878 | counter->counter = transport->ops.counter_create(nr_dimensions, | |
2879 | ust_dim, global_sum_step, global_counter_fd, | |
2880 | nr_counter_cpu_fds, counter_cpu_fds, true); | |
2881 | if (!counter->counter) | |
2882 | goto free_attr; | |
2883 | counter->ops = &transport->ops; | |
2884 | return counter; | |
2885 | ||
2886 | free_attr: | |
2887 | free(counter->attr); | |
2888 | free_counter: | |
2889 | free(counter); | |
2890 | return NULL; | |
2891 | } | |
2892 | ||
249cffb5 | 2893 | int lttng_ust_ctl_create_counter_data(struct lttng_ust_ctl_daemon_counter *counter, |
fd17d7ce | 2894 | struct lttng_ust_abi_object_data **_counter_data) |
ebabbf58 | 2895 | { |
fd17d7ce MD |
2896 | struct lttng_ust_abi_object_data *counter_data; |
2897 | struct lttng_ust_abi_counter_conf counter_conf = {0}; | |
ebabbf58 MD |
2898 | size_t i; |
2899 | int ret; | |
2900 | ||
2901 | switch (counter->attr->arithmetic) { | |
249cffb5 | 2902 | case LTTNG_UST_CTL_COUNTER_ARITHMETIC_MODULAR: |
fd17d7ce | 2903 | counter_conf.arithmetic = LTTNG_UST_ABI_COUNTER_ARITHMETIC_MODULAR; |
ebabbf58 | 2904 | break; |
249cffb5 | 2905 | case LTTNG_UST_CTL_COUNTER_ARITHMETIC_SATURATION: |
fd17d7ce | 2906 | counter_conf.arithmetic = LTTNG_UST_ABI_COUNTER_ARITHMETIC_SATURATION; |
ebabbf58 MD |
2907 | break; |
2908 | default: | |
2909 | return -EINVAL; | |
2910 | } | |
2911 | switch (counter->attr->bitness) { | |
249cffb5 | 2912 | case LTTNG_UST_CTL_COUNTER_BITNESS_32: |
fd17d7ce | 2913 | counter_conf.bitness = LTTNG_UST_ABI_COUNTER_BITNESS_32; |
ebabbf58 | 2914 | break; |
249cffb5 | 2915 | case LTTNG_UST_CTL_COUNTER_BITNESS_64: |
fd17d7ce | 2916 | counter_conf.bitness = LTTNG_UST_ABI_COUNTER_BITNESS_64; |
ebabbf58 MD |
2917 | break; |
2918 | default: | |
2919 | return -EINVAL; | |
2920 | } | |
2921 | counter_conf.number_dimensions = counter->attr->nr_dimensions; | |
2922 | counter_conf.global_sum_step = counter->attr->global_sum_step; | |
81bc4972 | 2923 | counter_conf.coalesce_hits = counter->attr->coalesce_hits; |
ebabbf58 MD |
2924 | for (i = 0; i < counter->attr->nr_dimensions; i++) { |
2925 | counter_conf.dimensions[i].size = counter->attr->dimensions[i].size; | |
2926 | counter_conf.dimensions[i].underflow_index = counter->attr->dimensions[i].underflow_index; | |
2927 | counter_conf.dimensions[i].overflow_index = counter->attr->dimensions[i].overflow_index; | |
2928 | counter_conf.dimensions[i].has_underflow = counter->attr->dimensions[i].has_underflow; | |
2929 | counter_conf.dimensions[i].has_overflow = counter->attr->dimensions[i].has_overflow; | |
2930 | } | |
2931 | ||
2932 | counter_data = zmalloc(sizeof(*counter_data)); | |
2933 | if (!counter_data) { | |
2934 | ret = -ENOMEM; | |
2935 | goto error_alloc; | |
2936 | } | |
fd17d7ce | 2937 | counter_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER; |
ebabbf58 MD |
2938 | counter_data->handle = -1; |
2939 | ||
2940 | counter_data->size = sizeof(counter_conf); | |
2941 | counter_data->u.counter.data = zmalloc(sizeof(counter_conf)); | |
2942 | if (!counter_data->u.counter.data) { | |
2943 | ret = -ENOMEM; | |
2944 | goto error_alloc_data; | |
2945 | } | |
2946 | ||
2947 | memcpy(counter_data->u.counter.data, &counter_conf, sizeof(counter_conf)); | |
2948 | *_counter_data = counter_data; | |
2949 | ||
2950 | return 0; | |
2951 | ||
2952 | error_alloc_data: | |
2953 | free(counter_data); | |
2954 | error_alloc: | |
2955 | return ret; | |
2956 | } | |
2957 | ||
249cffb5 | 2958 | int lttng_ust_ctl_create_counter_global_data(struct lttng_ust_ctl_daemon_counter *counter, |
fd17d7ce | 2959 | struct lttng_ust_abi_object_data **_counter_global_data) |
ebabbf58 | 2960 | { |
fd17d7ce | 2961 | struct lttng_ust_abi_object_data *counter_global_data; |
ebabbf58 MD |
2962 | int ret, fd; |
2963 | size_t len; | |
2964 | ||
2965 | if (lttng_counter_get_global_shm(counter->counter, &fd, &len)) | |
2966 | return -EINVAL; | |
2967 | counter_global_data = zmalloc(sizeof(*counter_global_data)); | |
2968 | if (!counter_global_data) { | |
2969 | ret = -ENOMEM; | |
2970 | goto error_alloc; | |
2971 | } | |
fd17d7ce | 2972 | counter_global_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_GLOBAL; |
ebabbf58 MD |
2973 | counter_global_data->handle = -1; |
2974 | counter_global_data->size = len; | |
2975 | counter_global_data->u.counter_global.shm_fd = fd; | |
2976 | *_counter_global_data = counter_global_data; | |
2977 | return 0; | |
2978 | ||
2979 | error_alloc: | |
2980 | return ret; | |
2981 | } | |
2982 | ||
249cffb5 | 2983 | int lttng_ust_ctl_create_counter_cpu_data(struct lttng_ust_ctl_daemon_counter *counter, int cpu, |
fd17d7ce | 2984 | struct lttng_ust_abi_object_data **_counter_cpu_data) |
ebabbf58 | 2985 | { |
fd17d7ce | 2986 | struct lttng_ust_abi_object_data *counter_cpu_data; |
ebabbf58 MD |
2987 | int ret, fd; |
2988 | size_t len; | |
2989 | ||
2990 | if (lttng_counter_get_cpu_shm(counter->counter, cpu, &fd, &len)) | |
2991 | return -EINVAL; | |
2992 | counter_cpu_data = zmalloc(sizeof(*counter_cpu_data)); | |
2993 | if (!counter_cpu_data) { | |
2994 | ret = -ENOMEM; | |
2995 | goto error_alloc; | |
2996 | } | |
fd17d7ce | 2997 | counter_cpu_data->type = LTTNG_UST_ABI_OBJECT_TYPE_COUNTER_CPU; |
ebabbf58 MD |
2998 | counter_cpu_data->handle = -1; |
2999 | counter_cpu_data->size = len; | |
3000 | counter_cpu_data->u.counter_cpu.shm_fd = fd; | |
3001 | counter_cpu_data->u.counter_cpu.cpu_nr = cpu; | |
3002 | *_counter_cpu_data = counter_cpu_data; | |
3003 | return 0; | |
3004 | ||
3005 | error_alloc: | |
3006 | return ret; | |
3007 | } | |
3008 | ||
249cffb5 | 3009 | void lttng_ust_ctl_destroy_counter(struct lttng_ust_ctl_daemon_counter *counter) |
ebabbf58 MD |
3010 | { |
3011 | counter->ops->counter_destroy(counter->counter); | |
3012 | free(counter->attr); | |
3013 | free(counter); | |
3014 | } | |
3015 | ||
249cffb5 | 3016 | int lttng_ust_ctl_send_counter_data_to_ust(int sock, int parent_handle, |
fd17d7ce | 3017 | struct lttng_ust_abi_object_data *counter_data) |
ebabbf58 MD |
3018 | { |
3019 | struct ustcomm_ust_msg lum; | |
3020 | struct ustcomm_ust_reply lur; | |
3021 | int ret; | |
3022 | size_t size; | |
3023 | ssize_t len; | |
3024 | ||
3025 | if (!counter_data) | |
3026 | return -EINVAL; | |
3027 | ||
3028 | size = counter_data->size; | |
3029 | memset(&lum, 0, sizeof(lum)); | |
3030 | lum.handle = parent_handle; | |
fd17d7ce | 3031 | lum.cmd = LTTNG_UST_ABI_COUNTER; |
ebabbf58 MD |
3032 | lum.u.counter.len = size; |
3033 | ret = ustcomm_send_app_msg(sock, &lum); | |
3034 | if (ret) | |
3035 | return ret; | |
3036 | ||
3037 | /* Send counter data */ | |
3038 | len = ustcomm_send_unix_sock(sock, counter_data->u.counter.data, size); | |
3039 | if (len != size) { | |
3040 | if (len < 0) | |
3041 | return len; | |
3042 | else | |
3043 | return -EIO; | |
3044 | } | |
3045 | ||
3046 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
3047 | if (!ret) { | |
3048 | counter_data->handle = lur.ret_val; | |
3049 | } | |
3050 | return ret; | |
3051 | } | |
3052 | ||
249cffb5 | 3053 | int lttng_ust_ctl_send_counter_global_data_to_ust(int sock, |
fd17d7ce MD |
3054 | struct lttng_ust_abi_object_data *counter_data, |
3055 | struct lttng_ust_abi_object_data *counter_global_data) | |
ebabbf58 MD |
3056 | { |
3057 | struct ustcomm_ust_msg lum; | |
3058 | struct ustcomm_ust_reply lur; | |
3059 | int ret, shm_fd[1]; | |
3060 | size_t size; | |
3061 | ssize_t len; | |
3062 | ||
3063 | if (!counter_data || !counter_global_data) | |
3064 | return -EINVAL; | |
3065 | ||
3066 | size = counter_global_data->size; | |
3067 | memset(&lum, 0, sizeof(lum)); | |
3068 | lum.handle = counter_data->handle; /* parent handle */ | |
fd17d7ce | 3069 | lum.cmd = LTTNG_UST_ABI_COUNTER_GLOBAL; |
ebabbf58 MD |
3070 | lum.u.counter_global.len = size; |
3071 | ret = ustcomm_send_app_msg(sock, &lum); | |
3072 | if (ret) | |
3073 | return ret; | |
3074 | ||
3075 | shm_fd[0] = counter_global_data->u.counter_global.shm_fd; | |
3076 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
3077 | if (len <= 0) { | |
3078 | if (len < 0) | |
3079 | return len; | |
3080 | else | |
3081 | return -EIO; | |
3082 | } | |
3083 | ||
3084 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
3085 | if (!ret) { | |
3086 | counter_global_data->handle = lur.ret_val; | |
3087 | } | |
3088 | return ret; | |
3089 | } | |
3090 | ||
249cffb5 | 3091 | int lttng_ust_ctl_send_counter_cpu_data_to_ust(int sock, |
fd17d7ce MD |
3092 | struct lttng_ust_abi_object_data *counter_data, |
3093 | struct lttng_ust_abi_object_data *counter_cpu_data) | |
ebabbf58 MD |
3094 | { |
3095 | struct ustcomm_ust_msg lum; | |
3096 | struct ustcomm_ust_reply lur; | |
3097 | int ret, shm_fd[1]; | |
3098 | size_t size; | |
3099 | ssize_t len; | |
3100 | ||
3101 | if (!counter_data || !counter_cpu_data) | |
3102 | return -EINVAL; | |
3103 | ||
3104 | size = counter_cpu_data->size; | |
3105 | memset(&lum, 0, sizeof(lum)); | |
3106 | lum.handle = counter_data->handle; /* parent handle */ | |
fd17d7ce | 3107 | lum.cmd = LTTNG_UST_ABI_COUNTER_CPU; |
ebabbf58 MD |
3108 | lum.u.counter_cpu.len = size; |
3109 | lum.u.counter_cpu.cpu_nr = counter_cpu_data->u.counter_cpu.cpu_nr; | |
3110 | ret = ustcomm_send_app_msg(sock, &lum); | |
3111 | if (ret) | |
3112 | return ret; | |
3113 | ||
3114 | shm_fd[0] = counter_cpu_data->u.counter_global.shm_fd; | |
3115 | len = ustcomm_send_fds_unix_sock(sock, shm_fd, 1); | |
3116 | if (len <= 0) { | |
3117 | if (len < 0) | |
3118 | return len; | |
3119 | else | |
3120 | return -EIO; | |
3121 | } | |
3122 | ||
3123 | ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd); | |
3124 | if (!ret) { | |
3125 | counter_cpu_data->handle = lur.ret_val; | |
3126 | } | |
3127 | return ret; | |
3128 | } | |
3129 | ||
249cffb5 | 3130 | int lttng_ust_ctl_counter_read(struct lttng_ust_ctl_daemon_counter *counter, |
ebabbf58 MD |
3131 | const size_t *dimension_indexes, |
3132 | int cpu, int64_t *value, | |
3133 | bool *overflow, bool *underflow) | |
3134 | { | |
3135 | return counter->ops->counter_read(counter->counter, dimension_indexes, cpu, | |
3136 | value, overflow, underflow); | |
3137 | } | |
3138 | ||
249cffb5 | 3139 | int lttng_ust_ctl_counter_aggregate(struct lttng_ust_ctl_daemon_counter *counter, |
ebabbf58 MD |
3140 | const size_t *dimension_indexes, |
3141 | int64_t *value, | |
3142 | bool *overflow, bool *underflow) | |
3143 | { | |
3144 | return counter->ops->counter_aggregate(counter->counter, dimension_indexes, | |
3145 | value, overflow, underflow); | |
3146 | } | |
3147 | ||
249cffb5 | 3148 | int lttng_ust_ctl_counter_clear(struct lttng_ust_ctl_daemon_counter *counter, |
ebabbf58 MD |
3149 | const size_t *dimension_indexes) |
3150 | { | |
3151 | return counter->ops->counter_clear(counter->counter, dimension_indexes); | |
3152 | } | |
3153 | ||
465a0d04 | 3154 | static |
fca97dfd | 3155 | void lttng_ust_ctl_ctor(void) |
465a0d04 MJ |
3156 | __attribute__((constructor)); |
3157 | static | |
fca97dfd | 3158 | void lttng_ust_ctl_ctor(void) |
74d81a6c | 3159 | { |
fca97dfd MJ |
3160 | /* |
3161 | * Call the liblttng-ust-common constructor to ensure it runs first. | |
3162 | */ | |
3163 | lttng_ust_common_ctor(); | |
3164 | ||
14e0a135 MD |
3165 | lttng_ust_ring_buffer_clients_init(); |
3166 | lttng_ust_counter_clients_init(); | |
03d2d293 | 3167 | lib_ringbuffer_signal_init(); |
74d81a6c MD |
3168 | } |
3169 | ||
c589eca2 | 3170 | static |
249cffb5 | 3171 | void lttng_ust_ctl_exit(void) |
c589eca2 MJ |
3172 | __attribute__((destructor)); |
3173 | static | |
249cffb5 | 3174 | void lttng_ust_ctl_exit(void) |
74d81a6c | 3175 | { |
14e0a135 MD |
3176 | lttng_ust_counter_clients_exit(); |
3177 | lttng_ust_ring_buffer_clients_exit(); | |
57773204 | 3178 | } |