Commit | Line | Data |
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f3105c67 MD |
1 | /* |
2 | * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca> | |
74d81a6c | 3 | * Copyright (C) 2011-2013 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
f3105c67 | 4 | * |
e92f3e28 MD |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; version 2 of the License only. | |
f3105c67 MD |
8 | * |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
e92f3e28 MD |
14 | * You should have received a copy of the GNU General Public License along |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
f3105c67 MD |
17 | */ |
18 | ||
19 | #ifndef _LTTNG_UST_CTL_H | |
20 | #define _LTTNG_UST_CTL_H | |
21 | ||
4318ae1b | 22 | #include <lttng/ust-abi.h> |
32ce8569 | 23 | #include <sys/types.h> |
a9ff648c | 24 | #include <limits.h> |
74d81a6c | 25 | |
db56acaf MD |
26 | #ifndef LTTNG_PACKED |
27 | #error "LTTNG_PACKED should be defined" | |
28 | #endif | |
29 | ||
74d81a6c MD |
30 | #ifndef LTTNG_UST_UUID_LEN |
31 | #define LTTNG_UST_UUID_LEN 16 | |
32 | #endif | |
33 | ||
32ce8569 MD |
34 | /* Default unix socket path */ |
35 | #define LTTNG_UST_SOCK_FILENAME \ | |
36 | "lttng-ust-sock-" \ | |
37 | __ust_stringify(LTTNG_UST_ABI_MAJOR_VERSION) | |
38 | ||
39 | /* | |
40 | * Shared memory files path are automatically related to shm root, e.g. | |
41 | * /dev/shm under linux. | |
42 | */ | |
43 | #define LTTNG_UST_WAIT_FILENAME \ | |
44 | "lttng-ust-wait-" \ | |
45 | __ust_stringify(LTTNG_UST_ABI_MAJOR_VERSION) | |
46 | ||
74d81a6c MD |
47 | struct lttng_ust_shm_handle; |
48 | struct lttng_ust_lib_ring_buffer; | |
49 | ||
50 | struct ustctl_consumer_channel_attr { | |
51 | enum lttng_ust_chan_type type; | |
52 | uint64_t subbuf_size; /* bytes */ | |
53 | uint64_t num_subbuf; /* power of 2 */ | |
54 | int overwrite; /* 1: overwrite, 0: discard */ | |
55 | unsigned int switch_timer_interval; /* usec */ | |
56 | unsigned int read_timer_interval; /* usec */ | |
57 | enum lttng_ust_output output; /* splice, mmap */ | |
6ca18e66 | 58 | uint32_t chan_id; /* channel ID */ |
74d81a6c | 59 | unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ |
b2c5f61a | 60 | int64_t blocking_timeout; /* Blocking timeout (usec) */ |
74d81a6c MD |
61 | } LTTNG_PACKED; |
62 | ||
63 | /* | |
64 | * API used by sessiond. | |
65 | */ | |
66 | ||
53f0df51 JG |
67 | struct lttng_ust_context_attr { |
68 | enum lttng_ust_context_type ctx; | |
69 | union { | |
70 | struct lttng_ust_perf_counter_ctx perf_counter; | |
71 | struct { | |
72 | char *provider_name; | |
73 | char *ctx_name; | |
74 | } app_ctx; | |
75 | } u; | |
76 | }; | |
77 | ||
7bc53e94 MD |
78 | /* |
79 | * Error values: all the following functions return: | |
c354a72c | 80 | * >= 0: Success (LTTNG_UST_OK) |
7bc53e94 MD |
81 | * < 0: error code. |
82 | */ | |
1c5e467e | 83 | int ustctl_register_done(int sock); |
f3105c67 | 84 | int ustctl_create_session(int sock); |
f3105c67 | 85 | int ustctl_create_event(int sock, struct lttng_ust_event *ev, |
61f02aea MD |
86 | struct lttng_ust_object_data *channel_data, |
87 | struct lttng_ust_object_data **event_data); | |
53f0df51 | 88 | int ustctl_add_context(int sock, struct lttng_ust_context_attr *ctx, |
61f02aea MD |
89 | struct lttng_ust_object_data *obj_data, |
90 | struct lttng_ust_object_data **context_data); | |
cd54f6d9 MD |
91 | int ustctl_set_filter(int sock, struct lttng_ust_filter_bytecode *bytecode, |
92 | struct lttng_ust_object_data *obj_data); | |
da57c034 JI |
93 | int ustctl_set_exclusion(int sock, struct lttng_ust_event_exclusion *exclusion, |
94 | struct lttng_ust_object_data *obj_data); | |
f3105c67 | 95 | |
61f02aea MD |
96 | int ustctl_enable(int sock, struct lttng_ust_object_data *object); |
97 | int ustctl_disable(int sock, struct lttng_ust_object_data *object); | |
4a6ca058 MD |
98 | int ustctl_start_session(int sock, int handle); |
99 | int ustctl_stop_session(int sock, int handle); | |
f3105c67 | 100 | |
b115631f MD |
101 | /* |
102 | * ustctl_tracepoint_list returns a tracepoint list handle, or negative | |
103 | * error value. | |
104 | */ | |
105 | int ustctl_tracepoint_list(int sock); | |
74d81a6c | 106 | |
b115631f MD |
107 | /* |
108 | * ustctl_tracepoint_list_get is used to iterate on the tp list | |
7bc53e94 MD |
109 | * handle. End is iteration is reached when -LTTNG_UST_ERR_NOENT is |
110 | * returned. | |
b115631f MD |
111 | */ |
112 | int ustctl_tracepoint_list_get(int sock, int tp_list_handle, | |
cbef6901 | 113 | struct lttng_ust_tracepoint_iter *iter); |
b115631f | 114 | |
40003310 MD |
115 | /* |
116 | * ustctl_tracepoint_field_list returns a tracepoint field list handle, | |
117 | * or negative error value. | |
118 | */ | |
119 | int ustctl_tracepoint_field_list(int sock); | |
120 | ||
121 | /* | |
122 | * ustctl_tracepoint_field_list_get is used to iterate on the tp field | |
7bc53e94 MD |
123 | * list handle. End is iteration is reached when -LTTNG_UST_ERR_NOENT is |
124 | * returned. | |
40003310 MD |
125 | */ |
126 | int ustctl_tracepoint_field_list_get(int sock, int tp_field_list_handle, | |
127 | struct lttng_ust_field_iter *iter); | |
128 | ||
f3105c67 MD |
129 | int ustctl_tracer_version(int sock, struct lttng_ust_tracer_version *v); |
130 | int ustctl_wait_quiescent(int sock); | |
131 | ||
f1fffc57 MD |
132 | int ustctl_sock_flush_buffer(int sock, struct lttng_ust_object_data *object); |
133 | ||
f3105c67 MD |
134 | int ustctl_calibrate(int sock, struct lttng_ust_calibrate *calibrate); |
135 | ||
74d81a6c MD |
136 | /* Release object created by members of this API. */ |
137 | int ustctl_release_object(int sock, struct lttng_ust_object_data *data); | |
138 | /* Release handle returned by create session. */ | |
139 | int ustctl_release_handle(int sock, int handle); | |
140 | ||
141 | int ustctl_recv_channel_from_consumer(int sock, | |
142 | struct lttng_ust_object_data **channel_data); | |
143 | int ustctl_recv_stream_from_consumer(int sock, | |
144 | struct lttng_ust_object_data **stream_data); | |
145 | int ustctl_send_channel_to_ust(int sock, int session_handle, | |
146 | struct lttng_ust_object_data *channel_data); | |
147 | int ustctl_send_stream_to_ust(int sock, | |
148 | struct lttng_ust_object_data *channel_data, | |
149 | struct lttng_ust_object_data *stream_data); | |
150 | ||
12f3dabc MD |
151 | /* |
152 | * ustctl_duplicate_ust_object_data allocated a new object in "dest" if | |
153 | * it succeeds (returns 0). It must be released using | |
154 | * ustctl_release_object() and then freed with free(). | |
155 | */ | |
156 | int ustctl_duplicate_ust_object_data(struct lttng_ust_object_data **dest, | |
157 | struct lttng_ust_object_data *src); | |
158 | ||
f3105c67 | 159 | /* |
74d81a6c | 160 | * API used by consumer. |
f3105c67 | 161 | */ |
74d81a6c MD |
162 | |
163 | struct ustctl_consumer_channel; | |
164 | struct ustctl_consumer_stream; | |
165 | struct ustctl_consumer_channel_attr; | |
166 | ||
5ea386c3 MD |
167 | int ustctl_get_nr_stream_per_channel(void); |
168 | ||
74d81a6c | 169 | struct ustctl_consumer_channel * |
5ea386c3 MD |
170 | ustctl_create_channel(struct ustctl_consumer_channel_attr *attr, |
171 | const int *stream_fds, int nr_stream_fds); | |
5224b5c8 | 172 | /* |
74d81a6c MD |
173 | * Each stream created needs to be destroyed before calling |
174 | * ustctl_destroy_channel(). | |
5224b5c8 | 175 | */ |
74d81a6c | 176 | void ustctl_destroy_channel(struct ustctl_consumer_channel *chan); |
f3105c67 | 177 | |
74d81a6c MD |
178 | int ustctl_send_channel_to_sessiond(int sock, |
179 | struct ustctl_consumer_channel *channel); | |
ff0f5728 MD |
180 | int ustctl_channel_close_wait_fd(struct ustctl_consumer_channel *consumer_chan); |
181 | int ustctl_channel_close_wakeup_fd(struct ustctl_consumer_channel *consumer_chan); | |
182 | int ustctl_channel_get_wait_fd(struct ustctl_consumer_channel *consumer_chan); | |
183 | int ustctl_channel_get_wakeup_fd(struct ustctl_consumer_channel *consumer_chan); | |
c9023c93 MD |
184 | |
185 | int ustctl_write_metadata_to_channel( | |
186 | struct ustctl_consumer_channel *channel, | |
187 | const char *metadata_str, /* NOT null-terminated */ | |
188 | size_t len); /* metadata length */ | |
3ef94b0e JD |
189 | ssize_t ustctl_write_one_packet_to_channel( |
190 | struct ustctl_consumer_channel *channel, | |
191 | const char *metadata_str, /* NOT null-terminated */ | |
192 | size_t len); /* metadata length */ | |
c9023c93 | 193 | |
74d81a6c MD |
194 | /* |
195 | * Send a NULL stream to finish iteration over all streams of a given | |
196 | * channel. | |
197 | */ | |
198 | int ustctl_send_stream_to_sessiond(int sock, | |
199 | struct ustctl_consumer_stream *stream); | |
200 | int ustctl_stream_close_wait_fd(struct ustctl_consumer_stream *stream); | |
201 | int ustctl_stream_close_wakeup_fd(struct ustctl_consumer_stream *stream); | |
ff0f5728 MD |
202 | int ustctl_stream_get_wait_fd(struct ustctl_consumer_stream *stream); |
203 | int ustctl_stream_get_wakeup_fd(struct ustctl_consumer_stream *stream); | |
f3105c67 | 204 | |
74d81a6c MD |
205 | /* Create/destroy stream buffers for read */ |
206 | struct ustctl_consumer_stream * | |
207 | ustctl_create_stream(struct ustctl_consumer_channel *channel, | |
208 | int cpu); | |
209 | void ustctl_destroy_stream(struct ustctl_consumer_stream *stream); | |
f3105c67 MD |
210 | |
211 | /* For mmap mode, readable without "get" operation */ | |
74d81a6c | 212 | int ustctl_get_mmap_len(struct ustctl_consumer_stream *stream, |
f3105c67 | 213 | unsigned long *len); |
74d81a6c | 214 | int ustctl_get_max_subbuf_size(struct ustctl_consumer_stream *stream, |
f3105c67 MD |
215 | unsigned long *len); |
216 | ||
217 | /* | |
218 | * For mmap mode, operate on the current packet (between get/put or | |
219 | * get_next/put_next). | |
220 | */ | |
74d81a6c MD |
221 | void *ustctl_get_mmap_base(struct ustctl_consumer_stream *stream); |
222 | int ustctl_get_mmap_read_offset(struct ustctl_consumer_stream *stream, | |
223 | unsigned long *off); | |
224 | int ustctl_get_subbuf_size(struct ustctl_consumer_stream *stream, | |
225 | unsigned long *len); | |
226 | int ustctl_get_padded_subbuf_size(struct ustctl_consumer_stream *stream, | |
227 | unsigned long *len); | |
228 | int ustctl_get_next_subbuf(struct ustctl_consumer_stream *stream); | |
229 | int ustctl_put_next_subbuf(struct ustctl_consumer_stream *stream); | |
f3105c67 MD |
230 | |
231 | /* snapshot */ | |
232 | ||
74d81a6c | 233 | int ustctl_snapshot(struct ustctl_consumer_stream *stream); |
f45930b7 | 234 | int ustctl_snapshot_sample_positions(struct ustctl_consumer_stream *stream); |
74d81a6c MD |
235 | int ustctl_snapshot_get_consumed(struct ustctl_consumer_stream *stream, |
236 | unsigned long *pos); | |
237 | int ustctl_snapshot_get_produced(struct ustctl_consumer_stream *stream, | |
238 | unsigned long *pos); | |
239 | int ustctl_get_subbuf(struct ustctl_consumer_stream *stream, | |
240 | unsigned long *pos); | |
241 | int ustctl_put_subbuf(struct ustctl_consumer_stream *stream); | |
5f9d3dbc | 242 | |
74d81a6c MD |
243 | void ustctl_flush_buffer(struct ustctl_consumer_stream *stream, |
244 | int producer_active); | |
beca55a1 | 245 | void ustctl_clear_buffer(struct ustctl_consumer_stream *stream); |
f3105c67 | 246 | |
b2f3252a | 247 | /* index */ |
82df14e4 MD |
248 | |
249 | /* | |
250 | * Getters which need to be used on the current packet (between get/put | |
251 | * or get_next/put_next. | |
252 | */ | |
253 | ||
b2f3252a JD |
254 | int ustctl_get_timestamp_begin(struct ustctl_consumer_stream *stream, |
255 | uint64_t *timestamp_begin); | |
256 | int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream, | |
257 | uint64_t *timestamp_end); | |
258 | int ustctl_get_events_discarded(struct ustctl_consumer_stream *stream, | |
259 | uint64_t *events_discarded); | |
260 | int ustctl_get_content_size(struct ustctl_consumer_stream *stream, | |
261 | uint64_t *content_size); | |
262 | int ustctl_get_packet_size(struct ustctl_consumer_stream *stream, | |
263 | uint64_t *packet_size); | |
1ff31389 JD |
264 | int ustctl_get_sequence_number(struct ustctl_consumer_stream *stream, |
265 | uint64_t *seq); | |
82df14e4 MD |
266 | |
267 | /* | |
268 | * Getter returning state invariant for the stream, which can be used | |
269 | * without "get" operation. | |
270 | */ | |
271 | ||
272 | int ustctl_get_stream_id(struct ustctl_consumer_stream *stream, | |
273 | uint64_t *stream_id); | |
45a00b05 JD |
274 | int ustctl_get_instance_id(struct ustctl_consumer_stream *stream, |
275 | uint64_t *id); | |
b2f3252a | 276 | |
82df14e4 MD |
277 | /* |
278 | * Getter returning the current timestamp as perceived from the | |
279 | * tracer. | |
280 | */ | |
281 | int ustctl_get_current_timestamp(struct ustctl_consumer_stream *stream, | |
282 | uint64_t *ts); | |
283 | ||
57201bb3 MD |
284 | /* returns whether UST has perf counters support. */ |
285 | int ustctl_has_perf_counters(void); | |
286 | ||
f53329f3 JD |
287 | /* Regenerate the statedump. */ |
288 | int ustctl_regenerate_statedump(int sock, int handle); | |
289 | ||
32ce8569 MD |
290 | /* event registry management */ |
291 | ||
292 | enum ustctl_socket_type { | |
293 | USTCTL_SOCKET_CMD = 0, | |
294 | USTCTL_SOCKET_NOTIFY = 1, | |
295 | }; | |
296 | ||
297 | enum ustctl_notify_cmd { | |
298 | USTCTL_NOTIFY_CMD_EVENT = 0, | |
299 | USTCTL_NOTIFY_CMD_CHANNEL = 1, | |
c785c634 | 300 | USTCTL_NOTIFY_CMD_ENUM = 2, |
32ce8569 MD |
301 | }; |
302 | ||
303 | enum ustctl_channel_header { | |
304 | USTCTL_CHANNEL_HEADER_UNKNOWN = 0, | |
305 | USTCTL_CHANNEL_HEADER_COMPACT = 1, | |
306 | USTCTL_CHANNEL_HEADER_LARGE = 2, | |
307 | }; | |
308 | ||
309 | /* event type structures */ | |
310 | ||
311 | enum ustctl_abstract_types { | |
312 | ustctl_atype_integer, | |
313 | ustctl_atype_enum, | |
314 | ustctl_atype_array, | |
315 | ustctl_atype_sequence, | |
316 | ustctl_atype_string, | |
317 | ustctl_atype_float, | |
53569322 MD |
318 | ustctl_atype_variant, |
319 | ustctl_atype_struct, | |
32ce8569 MD |
320 | NR_USTCTL_ABSTRACT_TYPES, |
321 | }; | |
322 | ||
323 | enum ustctl_string_encodings { | |
324 | ustctl_encode_none = 0, | |
325 | ustctl_encode_UTF8 = 1, | |
326 | ustctl_encode_ASCII = 2, | |
327 | NR_USTCTL_STRING_ENCODINGS, | |
328 | }; | |
329 | ||
330 | #define USTCTL_UST_INTEGER_TYPE_PADDING 24 | |
331 | struct ustctl_integer_type { | |
332 | uint32_t size; /* in bits */ | |
333 | uint32_t signedness; | |
334 | uint32_t reverse_byte_order; | |
335 | uint32_t base; /* 2, 8, 10, 16, for pretty print */ | |
735ea6a8 | 336 | int32_t encoding; /* enum ustctl_string_encodings */ |
32ce8569 MD |
337 | uint16_t alignment; /* in bits */ |
338 | char padding[USTCTL_UST_INTEGER_TYPE_PADDING]; | |
339 | } LTTNG_PACKED; | |
340 | ||
341 | #define USTCTL_UST_FLOAT_TYPE_PADDING 24 | |
342 | struct ustctl_float_type { | |
343 | uint32_t exp_dig; /* exponent digits, in bits */ | |
344 | uint32_t mant_dig; /* mantissa digits, in bits */ | |
345 | uint32_t reverse_byte_order; | |
346 | uint16_t alignment; /* in bits */ | |
347 | char padding[USTCTL_UST_FLOAT_TYPE_PADDING]; | |
348 | } LTTNG_PACKED; | |
349 | ||
a6f80644 MD |
350 | #define USTCTL_UST_ENUM_VALUE_PADDING 15 |
351 | struct ustctl_enum_value { | |
352 | uint64_t value; | |
353 | uint8_t signedness; | |
354 | char padding[USTCTL_UST_ENUM_VALUE_PADDING]; | |
355 | } LTTNG_PACKED; | |
356 | ||
3e762260 PP |
357 | enum ustctl_ust_enum_entry_options { |
358 | USTCTL_UST_ENUM_ENTRY_OPTION_IS_AUTO = 1U << 0, | |
359 | }; | |
360 | ||
c785c634 MD |
361 | #define USTCTL_UST_ENUM_ENTRY_PADDING 32 |
362 | struct ustctl_enum_entry { | |
a6f80644 | 363 | struct ustctl_enum_value start, end; /* start and end are inclusive */ |
c785c634 | 364 | char string[LTTNG_UST_SYM_NAME_LEN]; |
3e762260 PP |
365 | union { |
366 | struct { | |
367 | uint32_t options; | |
368 | } LTTNG_PACKED extra; | |
369 | char padding[USTCTL_UST_ENUM_ENTRY_PADDING]; | |
370 | } u; | |
a6f80644 | 371 | } LTTNG_PACKED; |
c785c634 | 372 | |
32ce8569 MD |
373 | #define USTCTL_UST_BASIC_TYPE_PADDING 296 |
374 | union _ustctl_basic_type { | |
375 | struct ustctl_integer_type integer; | |
c785c634 MD |
376 | struct { |
377 | char name[LTTNG_UST_SYM_NAME_LEN]; | |
378 | struct ustctl_integer_type container_type; | |
379 | uint64_t id; /* enum ID in sessiond. */ | |
380 | } enumeration; | |
32ce8569 | 381 | struct { |
735ea6a8 | 382 | int32_t encoding; /* enum ustctl_string_encodings */ |
32ce8569 MD |
383 | } string; |
384 | struct ustctl_float_type _float; | |
385 | char padding[USTCTL_UST_BASIC_TYPE_PADDING]; | |
386 | } LTTNG_PACKED; | |
387 | ||
388 | struct ustctl_basic_type { | |
389 | enum ustctl_abstract_types atype; | |
390 | union { | |
391 | union _ustctl_basic_type basic; | |
392 | } u; | |
393 | } LTTNG_PACKED; | |
394 | ||
395 | #define USTCTL_UST_TYPE_PADDING 128 | |
396 | struct ustctl_type { | |
397 | enum ustctl_abstract_types atype; | |
398 | union { | |
399 | union _ustctl_basic_type basic; | |
400 | struct { | |
401 | struct ustctl_basic_type elem_type; | |
402 | uint32_t length; /* num. elems. */ | |
403 | } array; | |
404 | struct { | |
405 | struct ustctl_basic_type length_type; | |
406 | struct ustctl_basic_type elem_type; | |
407 | } sequence; | |
53569322 MD |
408 | struct { |
409 | uint32_t nr_choices; | |
410 | char tag_name[LTTNG_UST_SYM_NAME_LEN]; | |
411 | /* Followed by nr_choices struct ustctl_field. */ | |
412 | } variant; | |
413 | struct { | |
414 | uint32_t nr_fields; | |
415 | /* Followed by nr_fields struct ustctl_field. */ | |
416 | } _struct; | |
32ce8569 MD |
417 | char padding[USTCTL_UST_TYPE_PADDING]; |
418 | } u; | |
419 | } LTTNG_PACKED; | |
420 | ||
421 | #define USTCTL_UST_FIELD_PADDING 28 | |
422 | struct ustctl_field { | |
423 | char name[LTTNG_UST_SYM_NAME_LEN]; | |
424 | struct ustctl_type type; | |
425 | char padding[USTCTL_UST_FIELD_PADDING]; | |
426 | } LTTNG_PACKED; | |
427 | ||
428 | /* | |
429 | * Returns 0 on success, negative error value on error. | |
430 | * If an error other than -LTTNG_UST_ERR_UNSUP_MAJOR is returned, | |
431 | * the output fields are not populated. | |
432 | */ | |
433 | int ustctl_recv_reg_msg(int sock, | |
434 | enum ustctl_socket_type *type, | |
435 | uint32_t *major, | |
436 | uint32_t *minor, | |
437 | uint32_t *pid, | |
438 | uint32_t *ppid, | |
439 | uint32_t *uid, | |
440 | uint32_t *gid, | |
441 | uint32_t *bits_per_long, | |
442 | uint32_t *uint8_t_alignment, | |
443 | uint32_t *uint16_t_alignment, | |
444 | uint32_t *uint32_t_alignment, | |
445 | uint32_t *uint64_t_alignment, | |
446 | uint32_t *long_alignment, | |
447 | int *byte_order, | |
448 | char *name); /* size LTTNG_UST_ABI_PROCNAME_LEN */ | |
449 | ||
450 | /* | |
451 | * Returns 0 on success, negative UST or system error value on error. | |
452 | * Receive the notification command. The "notify_cmd" can then be used | |
453 | * by the caller to find out which ustctl_recv_* function should be | |
454 | * called to receive the notification, and which ustctl_reply_* is | |
455 | * appropriate. | |
456 | */ | |
457 | int ustctl_recv_notify(int sock, enum ustctl_notify_cmd *notify_cmd); | |
458 | ||
459 | /* | |
460 | * Returns 0 on success, negative UST or system error value on error. | |
461 | */ | |
462 | int ustctl_recv_register_event(int sock, | |
463 | int *session_objd, /* session descriptor (output) */ | |
464 | int *channel_objd, /* channel descriptor (output) */ | |
465 | char *event_name, /* | |
466 | * event name (output, | |
467 | * size LTTNG_UST_SYM_NAME_LEN) | |
468 | */ | |
469 | int *loglevel, | |
470 | char **signature, /* | |
471 | * event signature | |
472 | * (output, dynamically | |
473 | * allocated, must be free(3)'d | |
474 | * by the caller if function | |
475 | * returns success.) | |
476 | */ | |
477 | size_t *nr_fields, | |
478 | struct ustctl_field **fields, | |
479 | char **model_emf_uri); | |
480 | ||
481 | /* | |
482 | * Returns 0 on success, negative error value on error. | |
483 | */ | |
484 | int ustctl_reply_register_event(int sock, | |
485 | uint32_t id, /* event id (input) */ | |
486 | int ret_code); /* return code. 0 ok, negative error */ | |
487 | ||
c785c634 MD |
488 | /* |
489 | * Returns 0 on success, negative UST or system error value on error. | |
490 | */ | |
491 | int ustctl_recv_register_enum(int sock, | |
492 | int *session_objd, | |
493 | char *enum_name, | |
494 | struct ustctl_enum_entry **entries, | |
495 | size_t *nr_entries); | |
496 | ||
497 | /* | |
498 | * Returns 0 on success, negative error value on error. | |
499 | */ | |
500 | int ustctl_reply_register_enum(int sock, | |
501 | uint64_t id, /* enum id (input) */ | |
502 | int ret_code); | |
503 | ||
32ce8569 MD |
504 | /* |
505 | * Returns 0 on success, negative UST or system error value on error. | |
506 | */ | |
507 | int ustctl_recv_register_channel(int sock, | |
508 | int *session_objd, /* session descriptor (output) */ | |
509 | int *channel_objd, /* channel descriptor (output) */ | |
510 | size_t *nr_fields, /* context fields */ | |
511 | struct ustctl_field **fields); | |
512 | ||
513 | /* | |
514 | * Returns 0 on success, negative error value on error. | |
515 | */ | |
516 | int ustctl_reply_register_channel(int sock, | |
517 | uint32_t chan_id, | |
518 | enum ustctl_channel_header header_type, | |
519 | int ret_code); /* return code. 0 ok, negative error */ | |
520 | ||
f3105c67 | 521 | #endif /* _LTTNG_UST_CTL_H */ |