Commit | Line | Data |
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75018ab6 | 1 | /* |
ab5be9fa MJ |
2 | * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca> |
3 | * Copyright (C) 2011-2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
75018ab6 | 4 | * |
ab5be9fa | 5 | * SPDX-License-Identifier: GPL-2.0-only |
75018ab6 | 6 | * |
75018ab6 JG |
7 | */ |
8 | ||
9 | #ifndef LTTNG_UST_CTL_INTERNAL_H | |
10 | #define LTTNG_UST_CTL_INTERNAL_H | |
11 | ||
12 | #include <sys/types.h> | |
13 | #include <limits.h> | |
14 | ||
15 | #include "lttng-ust-abi.h" | |
16 | ||
17 | #ifndef LTTNG_UST_UUID_LEN | |
18 | #define LTTNG_UST_UUID_LEN 16 | |
19 | #endif | |
20 | ||
21 | /* Default unix socket path */ | |
22 | #define LTTNG_UST_SOCK_FILENAME \ | |
23 | "lttng-ust-sock-" \ | |
24 | __ust_stringify(LTTNG_UST_ABI_MAJOR_VERSION) | |
25 | ||
26 | /* | |
27 | * Shared memory files path are automatically related to shm root, e.g. | |
28 | * /dev/shm under linux. | |
29 | */ | |
30 | #define LTTNG_UST_WAIT_FILENAME \ | |
31 | "lttng-ust-wait-" \ | |
32 | __ust_stringify(LTTNG_UST_ABI_MAJOR_VERSION) | |
33 | ||
34 | struct lttng_ust_shm_handle; | |
35 | struct lttng_ust_lib_ring_buffer; | |
36 | ||
37 | struct ustctl_consumer_channel_attr { | |
38 | enum lttng_ust_chan_type type; | |
39 | uint64_t subbuf_size; /* bytes */ | |
40 | uint64_t num_subbuf; /* power of 2 */ | |
41 | int overwrite; /* 1: overwrite, 0: discard */ | |
42 | unsigned int switch_timer_interval; /* usec */ | |
43 | unsigned int read_timer_interval; /* usec */ | |
44 | enum lttng_ust_output output; /* splice, mmap */ | |
45 | uint32_t chan_id; /* channel ID */ | |
46 | unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */ | |
47 | int64_t blocking_timeout; /* Blocking timeout (usec) */ | |
48 | } LTTNG_PACKED; | |
49 | ||
50 | /* | |
51 | * API used by sessiond. | |
52 | */ | |
53 | ||
54 | struct lttng_ust_context_attr { | |
55 | enum lttng_ust_context_type ctx; | |
56 | union { | |
57 | struct lttng_ust_perf_counter_ctx perf_counter; | |
58 | struct { | |
59 | char *provider_name; | |
60 | char *ctx_name; | |
61 | } app_ctx; | |
62 | } u; | |
63 | }; | |
64 | ||
65 | /* | |
66 | * Error values: all the following functions return: | |
67 | * >= 0: Success (LTTNG_UST_OK) | |
68 | * < 0: error code. | |
69 | */ | |
70 | int ustctl_register_done(int sock); | |
71 | int ustctl_create_session(int sock); | |
72 | int ustctl_create_event(int sock, struct lttng_ust_event *ev, | |
73 | struct lttng_ust_object_data *channel_data, | |
74 | struct lttng_ust_object_data **event_data); | |
75 | int ustctl_add_context(int sock, struct lttng_ust_context_attr *ctx, | |
76 | struct lttng_ust_object_data *obj_data, | |
77 | struct lttng_ust_object_data **context_data); | |
78 | int ustctl_set_filter(int sock, struct lttng_ust_filter_bytecode *bytecode, | |
79 | struct lttng_ust_object_data *obj_data); | |
80 | int ustctl_set_exclusion(int sock, struct lttng_ust_event_exclusion *exclusion, | |
81 | struct lttng_ust_object_data *obj_data); | |
82 | ||
83 | int ustctl_enable(int sock, struct lttng_ust_object_data *object); | |
84 | int ustctl_disable(int sock, struct lttng_ust_object_data *object); | |
85 | int ustctl_start_session(int sock, int handle); | |
86 | int ustctl_stop_session(int sock, int handle); | |
87 | ||
88 | /* | |
89 | * ustctl_tracepoint_list returns a tracepoint list handle, or negative | |
90 | * error value. | |
91 | */ | |
92 | int ustctl_tracepoint_list(int sock); | |
93 | ||
94 | /* | |
95 | * ustctl_tracepoint_list_get is used to iterate on the tp list | |
96 | * handle. End is iteration is reached when -LTTNG_UST_ERR_NOENT is | |
97 | * returned. | |
98 | */ | |
99 | int ustctl_tracepoint_list_get(int sock, int tp_list_handle, | |
100 | struct lttng_ust_tracepoint_iter *iter); | |
101 | ||
102 | /* | |
103 | * ustctl_tracepoint_field_list returns a tracepoint field list handle, | |
104 | * or negative error value. | |
105 | */ | |
106 | int ustctl_tracepoint_field_list(int sock); | |
107 | ||
108 | /* | |
109 | * ustctl_tracepoint_field_list_get is used to iterate on the tp field | |
110 | * list handle. End is iteration is reached when -LTTNG_UST_ERR_NOENT is | |
111 | * returned. | |
112 | */ | |
113 | int ustctl_tracepoint_field_list_get(int sock, int tp_field_list_handle, | |
114 | struct lttng_ust_field_iter *iter); | |
115 | ||
116 | int ustctl_tracer_version(int sock, struct lttng_ust_tracer_version *v); | |
117 | int ustctl_wait_quiescent(int sock); | |
118 | ||
119 | int ustctl_sock_flush_buffer(int sock, struct lttng_ust_object_data *object); | |
120 | ||
121 | int ustctl_calibrate(int sock, struct lttng_ust_calibrate *calibrate); | |
122 | ||
123 | /* Release object created by members of this API. */ | |
124 | int ustctl_release_object(int sock, struct lttng_ust_object_data *data); | |
125 | /* Release handle returned by create session. */ | |
126 | int ustctl_release_handle(int sock, int handle); | |
127 | ||
128 | int ustctl_recv_channel_from_consumer(int sock, | |
129 | struct lttng_ust_object_data **channel_data); | |
130 | int ustctl_recv_stream_from_consumer(int sock, | |
131 | struct lttng_ust_object_data **stream_data); | |
132 | int ustctl_send_channel_to_ust(int sock, int session_handle, | |
133 | struct lttng_ust_object_data *channel_data); | |
134 | int ustctl_send_stream_to_ust(int sock, | |
135 | struct lttng_ust_object_data *channel_data, | |
136 | struct lttng_ust_object_data *stream_data); | |
137 | ||
138 | /* | |
139 | * ustctl_duplicate_ust_object_data allocated a new object in "dest" if | |
140 | * it succeeds (returns 0). It must be released using | |
141 | * ustctl_release_object() and then freed with free(). | |
142 | */ | |
143 | int ustctl_duplicate_ust_object_data(struct lttng_ust_object_data **dest, | |
144 | struct lttng_ust_object_data *src); | |
145 | ||
146 | /* | |
147 | * API used by consumer. | |
148 | */ | |
149 | ||
150 | struct ustctl_consumer_channel; | |
151 | struct ustctl_consumer_stream; | |
152 | struct ustctl_consumer_channel_attr; | |
153 | ||
154 | int ustctl_get_nr_stream_per_channel(void); | |
155 | ||
156 | struct ustctl_consumer_channel * | |
157 | ustctl_create_channel(struct ustctl_consumer_channel_attr *attr, | |
158 | const int *stream_fds, int nr_stream_fds); | |
159 | /* | |
160 | * Each stream created needs to be destroyed before calling | |
161 | * ustctl_destroy_channel(). | |
162 | */ | |
163 | void ustctl_destroy_channel(struct ustctl_consumer_channel *chan); | |
164 | ||
165 | int ustctl_send_channel_to_sessiond(int sock, | |
166 | struct ustctl_consumer_channel *channel); | |
167 | int ustctl_channel_close_wait_fd(struct ustctl_consumer_channel *consumer_chan); | |
168 | int ustctl_channel_close_wakeup_fd(struct ustctl_consumer_channel *consumer_chan); | |
169 | int ustctl_channel_get_wait_fd(struct ustctl_consumer_channel *consumer_chan); | |
170 | int ustctl_channel_get_wakeup_fd(struct ustctl_consumer_channel *consumer_chan); | |
171 | ||
172 | int ustctl_write_metadata_to_channel( | |
173 | struct ustctl_consumer_channel *channel, | |
174 | const char *metadata_str, /* NOT null-terminated */ | |
175 | size_t len); /* metadata length */ | |
176 | ssize_t ustctl_write_one_packet_to_channel( | |
177 | struct ustctl_consumer_channel *channel, | |
178 | const char *metadata_str, /* NOT null-terminated */ | |
179 | size_t len); /* metadata length */ | |
180 | ||
181 | /* | |
182 | * Send a NULL stream to finish iteration over all streams of a given | |
183 | * channel. | |
184 | */ | |
185 | int ustctl_send_stream_to_sessiond(int sock, | |
186 | struct ustctl_consumer_stream *stream); | |
187 | int ustctl_stream_close_wait_fd(struct ustctl_consumer_stream *stream); | |
188 | int ustctl_stream_close_wakeup_fd(struct ustctl_consumer_stream *stream); | |
189 | int ustctl_stream_get_wait_fd(struct ustctl_consumer_stream *stream); | |
190 | int ustctl_stream_get_wakeup_fd(struct ustctl_consumer_stream *stream); | |
191 | ||
192 | /* Create/destroy stream buffers for read */ | |
193 | struct ustctl_consumer_stream * | |
194 | ustctl_create_stream(struct ustctl_consumer_channel *channel, | |
195 | int cpu); | |
196 | void ustctl_destroy_stream(struct ustctl_consumer_stream *stream); | |
197 | ||
198 | /* For mmap mode, readable without "get" operation */ | |
199 | int ustctl_get_mmap_len(struct ustctl_consumer_stream *stream, | |
200 | unsigned long *len); | |
201 | int ustctl_get_max_subbuf_size(struct ustctl_consumer_stream *stream, | |
202 | unsigned long *len); | |
203 | ||
204 | /* | |
205 | * For mmap mode, operate on the current packet (between get/put or | |
206 | * get_next/put_next). | |
207 | */ | |
208 | void *ustctl_get_mmap_base(struct ustctl_consumer_stream *stream); | |
209 | int ustctl_get_mmap_read_offset(struct ustctl_consumer_stream *stream, | |
210 | unsigned long *off); | |
211 | int ustctl_get_subbuf_size(struct ustctl_consumer_stream *stream, | |
212 | unsigned long *len); | |
213 | int ustctl_get_padded_subbuf_size(struct ustctl_consumer_stream *stream, | |
214 | unsigned long *len); | |
215 | int ustctl_get_next_subbuf(struct ustctl_consumer_stream *stream); | |
216 | int ustctl_put_next_subbuf(struct ustctl_consumer_stream *stream); | |
217 | ||
218 | /* snapshot */ | |
219 | ||
220 | int ustctl_snapshot(struct ustctl_consumer_stream *stream); | |
221 | int ustctl_snapshot_sample_positions(struct ustctl_consumer_stream *stream); | |
222 | int ustctl_snapshot_get_consumed(struct ustctl_consumer_stream *stream, | |
223 | unsigned long *pos); | |
224 | int ustctl_snapshot_get_produced(struct ustctl_consumer_stream *stream, | |
225 | unsigned long *pos); | |
226 | int ustctl_get_subbuf(struct ustctl_consumer_stream *stream, | |
227 | unsigned long *pos); | |
228 | int ustctl_put_subbuf(struct ustctl_consumer_stream *stream); | |
229 | ||
230 | void ustctl_flush_buffer(struct ustctl_consumer_stream *stream, | |
231 | int producer_active); | |
232 | ||
233 | /* index */ | |
234 | int ustctl_get_timestamp_begin(struct ustctl_consumer_stream *stream, | |
235 | uint64_t *timestamp_begin); | |
236 | int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream, | |
237 | uint64_t *timestamp_end); | |
238 | int ustctl_get_events_discarded(struct ustctl_consumer_stream *stream, | |
239 | uint64_t *events_discarded); | |
240 | int ustctl_get_content_size(struct ustctl_consumer_stream *stream, | |
241 | uint64_t *content_size); | |
242 | int ustctl_get_packet_size(struct ustctl_consumer_stream *stream, | |
243 | uint64_t *packet_size); | |
244 | int ustctl_get_stream_id(struct ustctl_consumer_stream *stream, | |
245 | uint64_t *stream_id); | |
246 | int ustctl_get_current_timestamp(struct ustctl_consumer_stream *stream, | |
247 | uint64_t *ts); | |
248 | int ustctl_get_sequence_number(struct ustctl_consumer_stream *stream, | |
249 | uint64_t *seq); | |
250 | int ustctl_get_instance_id(struct ustctl_consumer_stream *stream, | |
251 | uint64_t *id); | |
252 | ||
253 | /* returns whether UST has perf counters support. */ | |
254 | int ustctl_has_perf_counters(void); | |
255 | ||
256 | /* Regenerate the statedump. */ | |
257 | int ustctl_regenerate_statedump(int sock, int handle); | |
258 | ||
259 | /* event registry management */ | |
260 | ||
261 | enum ustctl_socket_type { | |
262 | USTCTL_SOCKET_CMD = 0, | |
263 | USTCTL_SOCKET_NOTIFY = 1, | |
264 | }; | |
265 | ||
266 | enum ustctl_notify_cmd { | |
267 | USTCTL_NOTIFY_CMD_EVENT = 0, | |
268 | USTCTL_NOTIFY_CMD_CHANNEL = 1, | |
269 | USTCTL_NOTIFY_CMD_ENUM = 2, | |
270 | }; | |
271 | ||
272 | enum ustctl_channel_header { | |
273 | USTCTL_CHANNEL_HEADER_UNKNOWN = 0, | |
274 | USTCTL_CHANNEL_HEADER_COMPACT = 1, | |
275 | USTCTL_CHANNEL_HEADER_LARGE = 2, | |
276 | }; | |
277 | ||
278 | /* event type structures */ | |
279 | ||
280 | enum ustctl_abstract_types { | |
281 | ustctl_atype_integer, | |
0d32d1a9 MD |
282 | ustctl_atype_enum, /* legacy */ |
283 | ustctl_atype_array, /* legacy */ | |
284 | ustctl_atype_sequence, /* legacy */ | |
75018ab6 JG |
285 | ustctl_atype_string, |
286 | ustctl_atype_float, | |
0d32d1a9 MD |
287 | ustctl_atype_variant, /* legacy */ |
288 | ustctl_atype_struct, /* legacy */ | |
289 | ustctl_atype_enum_nestable, | |
290 | ustctl_atype_array_nestable, | |
291 | ustctl_atype_sequence_nestable, | |
292 | ustctl_atype_struct_nestable, | |
293 | ustctl_atype_variant_nestable, | |
75018ab6 JG |
294 | NR_USTCTL_ABSTRACT_TYPES, |
295 | }; | |
296 | ||
297 | enum ustctl_string_encodings { | |
298 | ustctl_encode_none = 0, | |
299 | ustctl_encode_UTF8 = 1, | |
300 | ustctl_encode_ASCII = 2, | |
301 | NR_USTCTL_STRING_ENCODINGS, | |
302 | }; | |
303 | ||
304 | #define USTCTL_UST_INTEGER_TYPE_PADDING 24 | |
305 | struct ustctl_integer_type { | |
306 | uint32_t size; /* in bits */ | |
307 | uint32_t signedness; | |
308 | uint32_t reverse_byte_order; | |
309 | uint32_t base; /* 2, 8, 10, 16, for pretty print */ | |
310 | int32_t encoding; /* enum ustctl_string_encodings */ | |
311 | uint16_t alignment; /* in bits */ | |
312 | char padding[USTCTL_UST_INTEGER_TYPE_PADDING]; | |
313 | } LTTNG_PACKED; | |
314 | ||
315 | #define USTCTL_UST_FLOAT_TYPE_PADDING 24 | |
316 | struct ustctl_float_type { | |
317 | uint32_t exp_dig; /* exponent digits, in bits */ | |
318 | uint32_t mant_dig; /* mantissa digits, in bits */ | |
319 | uint32_t reverse_byte_order; | |
320 | uint16_t alignment; /* in bits */ | |
321 | char padding[USTCTL_UST_FLOAT_TYPE_PADDING]; | |
322 | } LTTNG_PACKED; | |
323 | ||
324 | #define USTCTL_UST_ENUM_VALUE_PADDING 15 | |
325 | struct ustctl_enum_value { | |
326 | uint64_t value; | |
327 | uint8_t signedness; | |
328 | char padding[USTCTL_UST_ENUM_VALUE_PADDING]; | |
329 | } LTTNG_PACKED; | |
330 | ||
331 | enum ustctl_ust_enum_entry_options { | |
332 | USTCTL_UST_ENUM_ENTRY_OPTION_IS_AUTO = 1U << 0, | |
333 | }; | |
334 | ||
335 | #define USTCTL_UST_ENUM_ENTRY_PADDING 32 | |
336 | struct ustctl_enum_entry { | |
337 | struct ustctl_enum_value start, end; /* start and end are inclusive */ | |
338 | char string[LTTNG_UST_SYM_NAME_LEN]; | |
339 | union { | |
340 | struct { | |
341 | uint32_t options; | |
342 | } LTTNG_PACKED extra; | |
343 | char padding[USTCTL_UST_ENUM_ENTRY_PADDING]; | |
344 | } u; | |
345 | } LTTNG_PACKED; | |
346 | ||
0d32d1a9 | 347 | /* legacy */ |
75018ab6 JG |
348 | #define USTCTL_UST_BASIC_TYPE_PADDING 296 |
349 | union _ustctl_basic_type { | |
350 | struct ustctl_integer_type integer; | |
351 | struct { | |
352 | char name[LTTNG_UST_SYM_NAME_LEN]; | |
353 | struct ustctl_integer_type container_type; | |
354 | uint64_t id; /* enum ID in sessiond. */ | |
355 | } enumeration; | |
356 | struct { | |
357 | int32_t encoding; /* enum ustctl_string_encodings */ | |
358 | } string; | |
359 | struct ustctl_float_type _float; | |
360 | char padding[USTCTL_UST_BASIC_TYPE_PADDING]; | |
361 | } LTTNG_PACKED; | |
362 | ||
0d32d1a9 | 363 | /* legacy */ |
75018ab6 JG |
364 | struct ustctl_basic_type { |
365 | enum ustctl_abstract_types atype; | |
366 | union { | |
367 | union _ustctl_basic_type basic; | |
368 | } u; | |
369 | } LTTNG_PACKED; | |
370 | ||
0d32d1a9 MD |
371 | /* |
372 | * Padding is derived from largest member: u.legacy.sequence which | |
373 | * contains two basic types, each with USTCTL_UST_BASIC_TYPE_PADDING. | |
374 | */ | |
375 | #define USTCTL_UST_TYPE_PADDING (2 * USTCTL_UST_BASIC_TYPE_PADDING) | |
75018ab6 JG |
376 | struct ustctl_type { |
377 | enum ustctl_abstract_types atype; | |
378 | union { | |
0d32d1a9 MD |
379 | struct ustctl_integer_type integer; |
380 | struct ustctl_float_type _float; | |
381 | struct { | |
382 | int32_t encoding; /* enum ustctl_string_encodings */ | |
383 | } string; | |
384 | struct { | |
385 | char name[LTTNG_UST_SYM_NAME_LEN]; | |
386 | uint64_t id; /* enum ID in sessiond. */ | |
387 | /* container_type follows after this struct ustctl_field. */ | |
388 | } enum_nestable; | |
75018ab6 | 389 | struct { |
75018ab6 | 390 | uint32_t length; /* num. elems. */ |
0d32d1a9 MD |
391 | uint32_t alignment; |
392 | /* elem_type follows after this struct ustctl_field. */ | |
393 | } array_nestable; | |
75018ab6 | 394 | struct { |
0d32d1a9 MD |
395 | char length_name[LTTNG_UST_SYM_NAME_LEN]; |
396 | uint32_t alignment; /* Alignment before elements. */ | |
397 | /* elem_type follows after the length_type. */ | |
398 | } sequence_nestable; | |
399 | struct { | |
400 | uint32_t nr_fields; | |
401 | uint32_t alignment; | |
402 | /* Followed by nr_fields struct ustctl_field. */ | |
403 | } struct_nestable; | |
75018ab6 JG |
404 | struct { |
405 | uint32_t nr_choices; | |
406 | char tag_name[LTTNG_UST_SYM_NAME_LEN]; | |
0d32d1a9 | 407 | uint32_t alignment; |
75018ab6 | 408 | /* Followed by nr_choices struct ustctl_field. */ |
0d32d1a9 MD |
409 | } variant_nestable; |
410 | ||
411 | /* Legacy ABI */ | |
412 | union { | |
413 | union _ustctl_basic_type basic; | |
414 | struct { | |
415 | struct ustctl_basic_type elem_type; | |
416 | uint32_t length; /* num. elems. */ | |
417 | } array; | |
418 | struct { | |
419 | struct ustctl_basic_type length_type; | |
420 | struct ustctl_basic_type elem_type; | |
421 | } sequence; | |
422 | struct { | |
423 | uint32_t nr_fields; | |
424 | /* Followed by nr_fields struct ustctl_field. */ | |
425 | } _struct; | |
426 | struct { | |
427 | uint32_t nr_choices; | |
428 | char tag_name[LTTNG_UST_SYM_NAME_LEN]; | |
429 | /* Followed by nr_choices struct ustctl_field. */ | |
430 | } variant; | |
431 | } legacy; | |
75018ab6 JG |
432 | char padding[USTCTL_UST_TYPE_PADDING]; |
433 | } u; | |
434 | } LTTNG_PACKED; | |
435 | ||
436 | #define USTCTL_UST_FIELD_PADDING 28 | |
437 | struct ustctl_field { | |
438 | char name[LTTNG_UST_SYM_NAME_LEN]; | |
439 | struct ustctl_type type; | |
440 | char padding[USTCTL_UST_FIELD_PADDING]; | |
441 | } LTTNG_PACKED; | |
442 | ||
443 | /* | |
444 | * Returns 0 on success, negative error value on error. | |
445 | * If an error other than -LTTNG_UST_ERR_UNSUP_MAJOR is returned, | |
446 | * the output fields are not populated. | |
447 | */ | |
448 | int ustctl_recv_reg_msg(int sock, | |
449 | enum ustctl_socket_type *type, | |
450 | uint32_t *major, | |
451 | uint32_t *minor, | |
452 | uint32_t *pid, | |
453 | uint32_t *ppid, | |
454 | uint32_t *uid, | |
455 | uint32_t *gid, | |
456 | uint32_t *bits_per_long, | |
457 | uint32_t *uint8_t_alignment, | |
458 | uint32_t *uint16_t_alignment, | |
459 | uint32_t *uint32_t_alignment, | |
460 | uint32_t *uint64_t_alignment, | |
461 | uint32_t *long_alignment, | |
462 | int *byte_order, | |
463 | char *name); /* size LTTNG_UST_ABI_PROCNAME_LEN */ | |
464 | ||
465 | /* | |
466 | * Returns 0 on success, negative UST or system error value on error. | |
467 | * Receive the notification command. The "notify_cmd" can then be used | |
468 | * by the caller to find out which ustctl_recv_* function should be | |
469 | * called to receive the notification, and which ustctl_reply_* is | |
470 | * appropriate. | |
471 | */ | |
472 | int ustctl_recv_notify(int sock, enum ustctl_notify_cmd *notify_cmd); | |
473 | ||
474 | /* | |
475 | * Returns 0 on success, negative UST or system error value on error. | |
476 | */ | |
477 | int ustctl_recv_register_event(int sock, | |
478 | int *session_objd, /* session descriptor (output) */ | |
479 | int *channel_objd, /* channel descriptor (output) */ | |
480 | char *event_name, /* | |
481 | * event name (output, | |
482 | * size LTTNG_UST_SYM_NAME_LEN) | |
483 | */ | |
484 | int *loglevel, | |
485 | char **signature, /* | |
486 | * event signature | |
487 | * (output, dynamically | |
488 | * allocated, must be free(3)'d | |
489 | * by the caller if function | |
490 | * returns success.) | |
491 | */ | |
492 | size_t *nr_fields, | |
493 | struct ustctl_field **fields, | |
494 | char **model_emf_uri); | |
495 | ||
496 | /* | |
497 | * Returns 0 on success, negative error value on error. | |
498 | */ | |
499 | int ustctl_reply_register_event(int sock, | |
500 | uint32_t id, /* event id (input) */ | |
501 | int ret_code); /* return code. 0 ok, negative error */ | |
502 | ||
503 | /* | |
504 | * Returns 0 on success, negative UST or system error value on error. | |
505 | */ | |
506 | int ustctl_recv_register_enum(int sock, | |
507 | int *session_objd, | |
508 | char *enum_name, | |
509 | struct ustctl_enum_entry **entries, | |
510 | size_t *nr_entries); | |
511 | ||
512 | /* | |
513 | * Returns 0 on success, negative error value on error. | |
514 | */ | |
515 | int ustctl_reply_register_enum(int sock, | |
516 | uint64_t id, /* enum id (input) */ | |
517 | int ret_code); | |
518 | ||
519 | /* | |
520 | * Returns 0 on success, negative UST or system error value on error. | |
521 | */ | |
522 | int ustctl_recv_register_channel(int sock, | |
523 | int *session_objd, /* session descriptor (output) */ | |
524 | int *channel_objd, /* channel descriptor (output) */ | |
525 | size_t *nr_fields, /* context fields */ | |
526 | struct ustctl_field **fields); | |
527 | ||
528 | /* | |
529 | * Returns 0 on success, negative error value on error. | |
530 | */ | |
531 | int ustctl_reply_register_channel(int sock, | |
532 | uint32_t chan_id, | |
533 | enum ustctl_channel_header header_type, | |
534 | int ret_code); /* return code. 0 ok, negative error */ | |
535 | ||
536 | #endif /* LTTNG_UST_CTL_INTERNAL_H */ |