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 | ||
b4051ad8 | 22 | #include <stddef.h> |
4318ae1b | 23 | #include <lttng/ust-abi.h> |
32ce8569 | 24 | #include <sys/types.h> |
a9ff648c | 25 | #include <limits.h> |
74d81a6c | 26 | |
db56acaf MD |
27 | #ifndef LTTNG_PACKED |
28 | #error "LTTNG_PACKED should be defined" | |
29 | #endif | |
30 | ||
74d81a6c MD |
31 | #ifndef LTTNG_UST_UUID_LEN |
32 | #define LTTNG_UST_UUID_LEN 16 | |
33 | #endif | |
34 | ||
32ce8569 MD |
35 | /* Default unix socket path */ |
36 | #define LTTNG_UST_SOCK_FILENAME \ | |
37 | "lttng-ust-sock-" \ | |
38 | __ust_stringify(LTTNG_UST_ABI_MAJOR_VERSION) | |
39 | ||
40 | /* | |
41 | * Shared memory files path are automatically related to shm root, e.g. | |
42 | * /dev/shm under linux. | |
43 | */ | |
44 | #define LTTNG_UST_WAIT_FILENAME \ | |
45 | "lttng-ust-wait-" \ | |
46 | __ust_stringify(LTTNG_UST_ABI_MAJOR_VERSION) | |
47 | ||
74d81a6c MD |
48 | struct lttng_ust_shm_handle; |
49 | struct lttng_ust_lib_ring_buffer; | |
50 | ||
51 | struct ustctl_consumer_channel_attr { | |
52 | enum lttng_ust_chan_type type; | |
53 | uint64_t subbuf_size; /* bytes */ | |
54 | uint64_t num_subbuf; /* power of 2 */ | |
55 | int overwrite; /* 1: overwrite, 0: discard */ | |
56 | unsigned int switch_timer_interval; /* usec */ | |
57 | unsigned int read_timer_interval; /* usec */ | |
58 | enum lttng_ust_output output; /* splice, mmap */ | |
6ca18e66 | 59 | uint32_t chan_id; /* channel ID */ |
74d81a6c | 60 | unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ |
b2c5f61a | 61 | int64_t blocking_timeout; /* Blocking timeout (usec) */ |
74d81a6c MD |
62 | } LTTNG_PACKED; |
63 | ||
64 | /* | |
65 | * API used by sessiond. | |
66 | */ | |
67 | ||
53f0df51 JG |
68 | struct lttng_ust_context_attr { |
69 | enum lttng_ust_context_type ctx; | |
70 | union { | |
71 | struct lttng_ust_perf_counter_ctx perf_counter; | |
72 | struct { | |
73 | char *provider_name; | |
74 | char *ctx_name; | |
75 | } app_ctx; | |
76 | } u; | |
77 | }; | |
78 | ||
7bc53e94 MD |
79 | /* |
80 | * Error values: all the following functions return: | |
c354a72c | 81 | * >= 0: Success (LTTNG_UST_OK) |
7bc53e94 MD |
82 | * < 0: error code. |
83 | */ | |
1c5e467e | 84 | int ustctl_register_done(int sock); |
f3105c67 | 85 | int ustctl_create_session(int sock); |
f3105c67 | 86 | int ustctl_create_event(int sock, struct lttng_ust_event *ev, |
61f02aea MD |
87 | struct lttng_ust_object_data *channel_data, |
88 | struct lttng_ust_object_data **event_data); | |
53f0df51 | 89 | int ustctl_add_context(int sock, struct lttng_ust_context_attr *ctx, |
61f02aea MD |
90 | struct lttng_ust_object_data *obj_data, |
91 | struct lttng_ust_object_data **context_data); | |
cd54f6d9 MD |
92 | int ustctl_set_filter(int sock, struct lttng_ust_filter_bytecode *bytecode, |
93 | struct lttng_ust_object_data *obj_data); | |
da57c034 JI |
94 | int ustctl_set_exclusion(int sock, struct lttng_ust_event_exclusion *exclusion, |
95 | struct lttng_ust_object_data *obj_data); | |
f3105c67 | 96 | |
61f02aea MD |
97 | int ustctl_enable(int sock, struct lttng_ust_object_data *object); |
98 | int ustctl_disable(int sock, struct lttng_ust_object_data *object); | |
4a6ca058 MD |
99 | int ustctl_start_session(int sock, int handle); |
100 | int ustctl_stop_session(int sock, int handle); | |
f3105c67 | 101 | |
b115631f MD |
102 | /* |
103 | * ustctl_tracepoint_list returns a tracepoint list handle, or negative | |
104 | * error value. | |
105 | */ | |
106 | int ustctl_tracepoint_list(int sock); | |
74d81a6c | 107 | |
b115631f MD |
108 | /* |
109 | * ustctl_tracepoint_list_get is used to iterate on the tp list | |
7bc53e94 MD |
110 | * handle. End is iteration is reached when -LTTNG_UST_ERR_NOENT is |
111 | * returned. | |
b115631f MD |
112 | */ |
113 | int ustctl_tracepoint_list_get(int sock, int tp_list_handle, | |
cbef6901 | 114 | struct lttng_ust_tracepoint_iter *iter); |
b115631f | 115 | |
40003310 MD |
116 | /* |
117 | * ustctl_tracepoint_field_list returns a tracepoint field list handle, | |
118 | * or negative error value. | |
119 | */ | |
120 | int ustctl_tracepoint_field_list(int sock); | |
121 | ||
122 | /* | |
123 | * ustctl_tracepoint_field_list_get is used to iterate on the tp field | |
7bc53e94 MD |
124 | * list handle. End is iteration is reached when -LTTNG_UST_ERR_NOENT is |
125 | * returned. | |
40003310 MD |
126 | */ |
127 | int ustctl_tracepoint_field_list_get(int sock, int tp_field_list_handle, | |
128 | struct lttng_ust_field_iter *iter); | |
129 | ||
f3105c67 MD |
130 | int ustctl_tracer_version(int sock, struct lttng_ust_tracer_version *v); |
131 | int ustctl_wait_quiescent(int sock); | |
132 | ||
f1fffc57 MD |
133 | int ustctl_sock_flush_buffer(int sock, struct lttng_ust_object_data *object); |
134 | ||
f3105c67 MD |
135 | int ustctl_calibrate(int sock, struct lttng_ust_calibrate *calibrate); |
136 | ||
74d81a6c MD |
137 | /* Release object created by members of this API. */ |
138 | int ustctl_release_object(int sock, struct lttng_ust_object_data *data); | |
139 | /* Release handle returned by create session. */ | |
140 | int ustctl_release_handle(int sock, int handle); | |
141 | ||
142 | int ustctl_recv_channel_from_consumer(int sock, | |
143 | struct lttng_ust_object_data **channel_data); | |
144 | int ustctl_recv_stream_from_consumer(int sock, | |
145 | struct lttng_ust_object_data **stream_data); | |
146 | int ustctl_send_channel_to_ust(int sock, int session_handle, | |
147 | struct lttng_ust_object_data *channel_data); | |
148 | int ustctl_send_stream_to_ust(int sock, | |
149 | struct lttng_ust_object_data *channel_data, | |
150 | struct lttng_ust_object_data *stream_data); | |
151 | ||
12f3dabc MD |
152 | /* |
153 | * ustctl_duplicate_ust_object_data allocated a new object in "dest" if | |
154 | * it succeeds (returns 0). It must be released using | |
155 | * ustctl_release_object() and then freed with free(). | |
156 | */ | |
157 | int ustctl_duplicate_ust_object_data(struct lttng_ust_object_data **dest, | |
158 | struct lttng_ust_object_data *src); | |
159 | ||
f3105c67 | 160 | /* |
74d81a6c | 161 | * API used by consumer. |
f3105c67 | 162 | */ |
74d81a6c MD |
163 | |
164 | struct ustctl_consumer_channel; | |
165 | struct ustctl_consumer_stream; | |
166 | struct ustctl_consumer_channel_attr; | |
167 | ||
5ea386c3 MD |
168 | int ustctl_get_nr_stream_per_channel(void); |
169 | ||
74d81a6c | 170 | struct ustctl_consumer_channel * |
5ea386c3 MD |
171 | ustctl_create_channel(struct ustctl_consumer_channel_attr *attr, |
172 | const int *stream_fds, int nr_stream_fds); | |
5224b5c8 | 173 | /* |
74d81a6c MD |
174 | * Each stream created needs to be destroyed before calling |
175 | * ustctl_destroy_channel(). | |
5224b5c8 | 176 | */ |
74d81a6c | 177 | void ustctl_destroy_channel(struct ustctl_consumer_channel *chan); |
f3105c67 | 178 | |
74d81a6c MD |
179 | int ustctl_send_channel_to_sessiond(int sock, |
180 | struct ustctl_consumer_channel *channel); | |
ff0f5728 MD |
181 | int ustctl_channel_close_wait_fd(struct ustctl_consumer_channel *consumer_chan); |
182 | int ustctl_channel_close_wakeup_fd(struct ustctl_consumer_channel *consumer_chan); | |
183 | int ustctl_channel_get_wait_fd(struct ustctl_consumer_channel *consumer_chan); | |
184 | int ustctl_channel_get_wakeup_fd(struct ustctl_consumer_channel *consumer_chan); | |
c9023c93 MD |
185 | |
186 | int ustctl_write_metadata_to_channel( | |
187 | struct ustctl_consumer_channel *channel, | |
188 | const char *metadata_str, /* NOT null-terminated */ | |
189 | size_t len); /* metadata length */ | |
3ef94b0e JD |
190 | ssize_t ustctl_write_one_packet_to_channel( |
191 | struct ustctl_consumer_channel *channel, | |
192 | const char *metadata_str, /* NOT null-terminated */ | |
193 | size_t len); /* metadata length */ | |
c9023c93 | 194 | |
74d81a6c MD |
195 | /* |
196 | * Send a NULL stream to finish iteration over all streams of a given | |
197 | * channel. | |
198 | */ | |
199 | int ustctl_send_stream_to_sessiond(int sock, | |
200 | struct ustctl_consumer_stream *stream); | |
201 | int ustctl_stream_close_wait_fd(struct ustctl_consumer_stream *stream); | |
202 | int ustctl_stream_close_wakeup_fd(struct ustctl_consumer_stream *stream); | |
ff0f5728 MD |
203 | int ustctl_stream_get_wait_fd(struct ustctl_consumer_stream *stream); |
204 | int ustctl_stream_get_wakeup_fd(struct ustctl_consumer_stream *stream); | |
f3105c67 | 205 | |
74d81a6c MD |
206 | /* Create/destroy stream buffers for read */ |
207 | struct ustctl_consumer_stream * | |
208 | ustctl_create_stream(struct ustctl_consumer_channel *channel, | |
209 | int cpu); | |
210 | void ustctl_destroy_stream(struct ustctl_consumer_stream *stream); | |
f3105c67 MD |
211 | |
212 | /* For mmap mode, readable without "get" operation */ | |
74d81a6c | 213 | int ustctl_get_mmap_len(struct ustctl_consumer_stream *stream, |
f3105c67 | 214 | unsigned long *len); |
74d81a6c | 215 | int ustctl_get_max_subbuf_size(struct ustctl_consumer_stream *stream, |
f3105c67 MD |
216 | unsigned long *len); |
217 | ||
218 | /* | |
219 | * For mmap mode, operate on the current packet (between get/put or | |
220 | * get_next/put_next). | |
221 | */ | |
74d81a6c MD |
222 | void *ustctl_get_mmap_base(struct ustctl_consumer_stream *stream); |
223 | int ustctl_get_mmap_read_offset(struct ustctl_consumer_stream *stream, | |
224 | unsigned long *off); | |
225 | int ustctl_get_subbuf_size(struct ustctl_consumer_stream *stream, | |
226 | unsigned long *len); | |
227 | int ustctl_get_padded_subbuf_size(struct ustctl_consumer_stream *stream, | |
228 | unsigned long *len); | |
229 | int ustctl_get_next_subbuf(struct ustctl_consumer_stream *stream); | |
230 | int ustctl_put_next_subbuf(struct ustctl_consumer_stream *stream); | |
f3105c67 MD |
231 | |
232 | /* snapshot */ | |
233 | ||
74d81a6c | 234 | int ustctl_snapshot(struct ustctl_consumer_stream *stream); |
f45930b7 | 235 | int ustctl_snapshot_sample_positions(struct ustctl_consumer_stream *stream); |
74d81a6c MD |
236 | int ustctl_snapshot_get_consumed(struct ustctl_consumer_stream *stream, |
237 | unsigned long *pos); | |
238 | int ustctl_snapshot_get_produced(struct ustctl_consumer_stream *stream, | |
239 | unsigned long *pos); | |
240 | int ustctl_get_subbuf(struct ustctl_consumer_stream *stream, | |
241 | unsigned long *pos); | |
242 | int ustctl_put_subbuf(struct ustctl_consumer_stream *stream); | |
5f9d3dbc | 243 | |
74d81a6c MD |
244 | void ustctl_flush_buffer(struct ustctl_consumer_stream *stream, |
245 | int producer_active); | |
beca55a1 | 246 | void ustctl_clear_buffer(struct ustctl_consumer_stream *stream); |
f3105c67 | 247 | |
b2f3252a | 248 | /* index */ |
82df14e4 MD |
249 | |
250 | /* | |
251 | * Getters which need to be used on the current packet (between get/put | |
252 | * or get_next/put_next. | |
253 | */ | |
254 | ||
b2f3252a JD |
255 | int ustctl_get_timestamp_begin(struct ustctl_consumer_stream *stream, |
256 | uint64_t *timestamp_begin); | |
257 | int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream, | |
258 | uint64_t *timestamp_end); | |
259 | int ustctl_get_events_discarded(struct ustctl_consumer_stream *stream, | |
260 | uint64_t *events_discarded); | |
261 | int ustctl_get_content_size(struct ustctl_consumer_stream *stream, | |
262 | uint64_t *content_size); | |
263 | int ustctl_get_packet_size(struct ustctl_consumer_stream *stream, | |
264 | uint64_t *packet_size); | |
1ff31389 JD |
265 | int ustctl_get_sequence_number(struct ustctl_consumer_stream *stream, |
266 | uint64_t *seq); | |
82df14e4 MD |
267 | |
268 | /* | |
269 | * Getter returning state invariant for the stream, which can be used | |
270 | * without "get" operation. | |
271 | */ | |
272 | ||
273 | int ustctl_get_stream_id(struct ustctl_consumer_stream *stream, | |
274 | uint64_t *stream_id); | |
45a00b05 JD |
275 | int ustctl_get_instance_id(struct ustctl_consumer_stream *stream, |
276 | uint64_t *id); | |
b2f3252a | 277 | |
82df14e4 MD |
278 | /* |
279 | * Getter returning the current timestamp as perceived from the | |
280 | * tracer. | |
281 | */ | |
282 | int ustctl_get_current_timestamp(struct ustctl_consumer_stream *stream, | |
283 | uint64_t *ts); | |
284 | ||
57201bb3 MD |
285 | /* returns whether UST has perf counters support. */ |
286 | int ustctl_has_perf_counters(void); | |
287 | ||
f53329f3 JD |
288 | /* Regenerate the statedump. */ |
289 | int ustctl_regenerate_statedump(int sock, int handle); | |
290 | ||
32ce8569 MD |
291 | /* event registry management */ |
292 | ||
293 | enum ustctl_socket_type { | |
294 | USTCTL_SOCKET_CMD = 0, | |
295 | USTCTL_SOCKET_NOTIFY = 1, | |
296 | }; | |
297 | ||
298 | enum ustctl_notify_cmd { | |
299 | USTCTL_NOTIFY_CMD_EVENT = 0, | |
300 | USTCTL_NOTIFY_CMD_CHANNEL = 1, | |
c785c634 | 301 | USTCTL_NOTIFY_CMD_ENUM = 2, |
32ce8569 MD |
302 | }; |
303 | ||
304 | enum ustctl_channel_header { | |
305 | USTCTL_CHANNEL_HEADER_UNKNOWN = 0, | |
306 | USTCTL_CHANNEL_HEADER_COMPACT = 1, | |
307 | USTCTL_CHANNEL_HEADER_LARGE = 2, | |
308 | }; | |
309 | ||
310 | /* event type structures */ | |
311 | ||
312 | enum ustctl_abstract_types { | |
313 | ustctl_atype_integer, | |
314 | ustctl_atype_enum, | |
315 | ustctl_atype_array, | |
316 | ustctl_atype_sequence, | |
317 | ustctl_atype_string, | |
318 | ustctl_atype_float, | |
53569322 MD |
319 | ustctl_atype_variant, |
320 | ustctl_atype_struct, | |
32ce8569 MD |
321 | NR_USTCTL_ABSTRACT_TYPES, |
322 | }; | |
323 | ||
324 | enum ustctl_string_encodings { | |
325 | ustctl_encode_none = 0, | |
326 | ustctl_encode_UTF8 = 1, | |
327 | ustctl_encode_ASCII = 2, | |
328 | NR_USTCTL_STRING_ENCODINGS, | |
329 | }; | |
330 | ||
331 | #define USTCTL_UST_INTEGER_TYPE_PADDING 24 | |
332 | struct ustctl_integer_type { | |
333 | uint32_t size; /* in bits */ | |
334 | uint32_t signedness; | |
335 | uint32_t reverse_byte_order; | |
336 | uint32_t base; /* 2, 8, 10, 16, for pretty print */ | |
735ea6a8 | 337 | int32_t encoding; /* enum ustctl_string_encodings */ |
32ce8569 MD |
338 | uint16_t alignment; /* in bits */ |
339 | char padding[USTCTL_UST_INTEGER_TYPE_PADDING]; | |
340 | } LTTNG_PACKED; | |
341 | ||
342 | #define USTCTL_UST_FLOAT_TYPE_PADDING 24 | |
343 | struct ustctl_float_type { | |
344 | uint32_t exp_dig; /* exponent digits, in bits */ | |
345 | uint32_t mant_dig; /* mantissa digits, in bits */ | |
346 | uint32_t reverse_byte_order; | |
347 | uint16_t alignment; /* in bits */ | |
348 | char padding[USTCTL_UST_FLOAT_TYPE_PADDING]; | |
349 | } LTTNG_PACKED; | |
350 | ||
a6f80644 MD |
351 | #define USTCTL_UST_ENUM_VALUE_PADDING 15 |
352 | struct ustctl_enum_value { | |
353 | uint64_t value; | |
354 | uint8_t signedness; | |
355 | char padding[USTCTL_UST_ENUM_VALUE_PADDING]; | |
356 | } LTTNG_PACKED; | |
357 | ||
3e762260 PP |
358 | enum ustctl_ust_enum_entry_options { |
359 | USTCTL_UST_ENUM_ENTRY_OPTION_IS_AUTO = 1U << 0, | |
360 | }; | |
361 | ||
c785c634 MD |
362 | #define USTCTL_UST_ENUM_ENTRY_PADDING 32 |
363 | struct ustctl_enum_entry { | |
a6f80644 | 364 | struct ustctl_enum_value start, end; /* start and end are inclusive */ |
c785c634 | 365 | char string[LTTNG_UST_SYM_NAME_LEN]; |
3e762260 PP |
366 | union { |
367 | struct { | |
368 | uint32_t options; | |
369 | } LTTNG_PACKED extra; | |
370 | char padding[USTCTL_UST_ENUM_ENTRY_PADDING]; | |
371 | } u; | |
a6f80644 | 372 | } LTTNG_PACKED; |
c785c634 | 373 | |
32ce8569 MD |
374 | #define USTCTL_UST_BASIC_TYPE_PADDING 296 |
375 | union _ustctl_basic_type { | |
376 | struct ustctl_integer_type integer; | |
c785c634 MD |
377 | struct { |
378 | char name[LTTNG_UST_SYM_NAME_LEN]; | |
379 | struct ustctl_integer_type container_type; | |
380 | uint64_t id; /* enum ID in sessiond. */ | |
381 | } enumeration; | |
32ce8569 | 382 | struct { |
735ea6a8 | 383 | int32_t encoding; /* enum ustctl_string_encodings */ |
32ce8569 MD |
384 | } string; |
385 | struct ustctl_float_type _float; | |
386 | char padding[USTCTL_UST_BASIC_TYPE_PADDING]; | |
387 | } LTTNG_PACKED; | |
388 | ||
389 | struct ustctl_basic_type { | |
390 | enum ustctl_abstract_types atype; | |
391 | union { | |
392 | union _ustctl_basic_type basic; | |
393 | } u; | |
394 | } LTTNG_PACKED; | |
395 | ||
396 | #define USTCTL_UST_TYPE_PADDING 128 | |
397 | struct ustctl_type { | |
398 | enum ustctl_abstract_types atype; | |
399 | union { | |
400 | union _ustctl_basic_type basic; | |
401 | struct { | |
402 | struct ustctl_basic_type elem_type; | |
403 | uint32_t length; /* num. elems. */ | |
404 | } array; | |
405 | struct { | |
406 | struct ustctl_basic_type length_type; | |
407 | struct ustctl_basic_type elem_type; | |
408 | } sequence; | |
53569322 MD |
409 | struct { |
410 | uint32_t nr_choices; | |
411 | char tag_name[LTTNG_UST_SYM_NAME_LEN]; | |
412 | /* Followed by nr_choices struct ustctl_field. */ | |
413 | } variant; | |
414 | struct { | |
415 | uint32_t nr_fields; | |
416 | /* Followed by nr_fields struct ustctl_field. */ | |
417 | } _struct; | |
32ce8569 MD |
418 | char padding[USTCTL_UST_TYPE_PADDING]; |
419 | } u; | |
420 | } LTTNG_PACKED; | |
421 | ||
422 | #define USTCTL_UST_FIELD_PADDING 28 | |
423 | struct ustctl_field { | |
424 | char name[LTTNG_UST_SYM_NAME_LEN]; | |
425 | struct ustctl_type type; | |
426 | char padding[USTCTL_UST_FIELD_PADDING]; | |
427 | } LTTNG_PACKED; | |
428 | ||
429 | /* | |
430 | * Returns 0 on success, negative error value on error. | |
431 | * If an error other than -LTTNG_UST_ERR_UNSUP_MAJOR is returned, | |
432 | * the output fields are not populated. | |
433 | */ | |
434 | int ustctl_recv_reg_msg(int sock, | |
435 | enum ustctl_socket_type *type, | |
436 | uint32_t *major, | |
437 | uint32_t *minor, | |
438 | uint32_t *pid, | |
439 | uint32_t *ppid, | |
440 | uint32_t *uid, | |
441 | uint32_t *gid, | |
442 | uint32_t *bits_per_long, | |
443 | uint32_t *uint8_t_alignment, | |
444 | uint32_t *uint16_t_alignment, | |
445 | uint32_t *uint32_t_alignment, | |
446 | uint32_t *uint64_t_alignment, | |
447 | uint32_t *long_alignment, | |
448 | int *byte_order, | |
449 | char *name); /* size LTTNG_UST_ABI_PROCNAME_LEN */ | |
450 | ||
451 | /* | |
452 | * Returns 0 on success, negative UST or system error value on error. | |
453 | * Receive the notification command. The "notify_cmd" can then be used | |
454 | * by the caller to find out which ustctl_recv_* function should be | |
455 | * called to receive the notification, and which ustctl_reply_* is | |
456 | * appropriate. | |
457 | */ | |
458 | int ustctl_recv_notify(int sock, enum ustctl_notify_cmd *notify_cmd); | |
459 | ||
460 | /* | |
461 | * Returns 0 on success, negative UST or system error value on error. | |
462 | */ | |
463 | int ustctl_recv_register_event(int sock, | |
464 | int *session_objd, /* session descriptor (output) */ | |
465 | int *channel_objd, /* channel descriptor (output) */ | |
466 | char *event_name, /* | |
467 | * event name (output, | |
468 | * size LTTNG_UST_SYM_NAME_LEN) | |
469 | */ | |
470 | int *loglevel, | |
471 | char **signature, /* | |
472 | * event signature | |
473 | * (output, dynamically | |
474 | * allocated, must be free(3)'d | |
475 | * by the caller if function | |
476 | * returns success.) | |
477 | */ | |
478 | size_t *nr_fields, | |
479 | struct ustctl_field **fields, | |
480 | char **model_emf_uri); | |
481 | ||
482 | /* | |
483 | * Returns 0 on success, negative error value on error. | |
484 | */ | |
485 | int ustctl_reply_register_event(int sock, | |
486 | uint32_t id, /* event id (input) */ | |
487 | int ret_code); /* return code. 0 ok, negative error */ | |
488 | ||
c785c634 MD |
489 | /* |
490 | * Returns 0 on success, negative UST or system error value on error. | |
491 | */ | |
492 | int ustctl_recv_register_enum(int sock, | |
493 | int *session_objd, | |
494 | char *enum_name, | |
495 | struct ustctl_enum_entry **entries, | |
496 | size_t *nr_entries); | |
497 | ||
498 | /* | |
499 | * Returns 0 on success, negative error value on error. | |
500 | */ | |
501 | int ustctl_reply_register_enum(int sock, | |
502 | uint64_t id, /* enum id (input) */ | |
503 | int ret_code); | |
504 | ||
32ce8569 MD |
505 | /* |
506 | * Returns 0 on success, negative UST or system error value on error. | |
507 | */ | |
508 | int ustctl_recv_register_channel(int sock, | |
509 | int *session_objd, /* session descriptor (output) */ | |
510 | int *channel_objd, /* channel descriptor (output) */ | |
511 | size_t *nr_fields, /* context fields */ | |
512 | struct ustctl_field **fields); | |
513 | ||
514 | /* | |
515 | * Returns 0 on success, negative error value on error. | |
516 | */ | |
517 | int ustctl_reply_register_channel(int sock, | |
518 | uint32_t chan_id, | |
519 | enum ustctl_channel_header header_type, | |
520 | int ret_code); /* return code. 0 ok, negative error */ | |
521 | ||
f3105c67 | 522 | #endif /* _LTTNG_UST_CTL_H */ |