| 1 | /* |
| 2 | * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca> |
| 3 | * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca> |
| 4 | * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 5 | * |
| 6 | * SPDX-License-Identifier: GPL-2.0-only |
| 7 | * |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * This header is meant for liblttng and libust internal use ONLY. These |
| 12 | * declarations should NOT be considered stable API. |
| 13 | */ |
| 14 | |
| 15 | #ifndef _LTTNG_SESSIOND_COMM_H |
| 16 | #define _LTTNG_SESSIOND_COMM_H |
| 17 | |
| 18 | #include <limits.h> |
| 19 | #include <lttng/lttng.h> |
| 20 | #include <lttng/snapshot-internal.h> |
| 21 | #include <lttng/save-internal.h> |
| 22 | #include <lttng/channel-internal.h> |
| 23 | #include <lttng/trigger/trigger-internal.h> |
| 24 | #include <lttng/rotate-internal.h> |
| 25 | #include <common/compat/socket.h> |
| 26 | #include <common/uri.h> |
| 27 | #include <common/defaults.h> |
| 28 | #include <common/uuid.h> |
| 29 | #include <common/macros.h> |
| 30 | #include <common/optional.h> |
| 31 | |
| 32 | #include <arpa/inet.h> |
| 33 | #include <netinet/in.h> |
| 34 | #include <sys/un.h> |
| 35 | |
| 36 | #include "inet.h" |
| 37 | #include "inet6.h" |
| 38 | #include <common/unix.h> |
| 39 | |
| 40 | /* Queue size of listen(2) */ |
| 41 | #define LTTNG_SESSIOND_COMM_MAX_LISTEN 64 |
| 42 | |
| 43 | /* Maximum number of FDs that can be sent over a Unix socket */ |
| 44 | #if defined(__linux__) |
| 45 | /* Based on the kernel's SCM_MAX_FD which is 253 since 2.6.38 (255 before) */ |
| 46 | #define LTTCOMM_MAX_SEND_FDS 253 |
| 47 | #else |
| 48 | #define LTTCOMM_MAX_SEND_FDS 16 |
| 49 | #endif |
| 50 | |
| 51 | enum lttcomm_sessiond_command { |
| 52 | /* Tracer command */ |
| 53 | LTTNG_ADD_CONTEXT = 0, |
| 54 | /* LTTNG_CALIBRATE used to be here */ |
| 55 | LTTNG_DISABLE_CHANNEL = 2, |
| 56 | LTTNG_DISABLE_EVENT = 3, |
| 57 | LTTNG_LIST_SYSCALLS = 4, |
| 58 | LTTNG_ENABLE_CHANNEL = 5, |
| 59 | LTTNG_ENABLE_EVENT = 6, |
| 60 | /* 7 */ |
| 61 | /* Session daemon command */ |
| 62 | /* 8 */ |
| 63 | LTTNG_DESTROY_SESSION = 9, |
| 64 | LTTNG_LIST_CHANNELS = 10, |
| 65 | LTTNG_LIST_DOMAINS = 11, |
| 66 | LTTNG_LIST_EVENTS = 12, |
| 67 | LTTNG_LIST_SESSIONS = 13, |
| 68 | LTTNG_LIST_TRACEPOINTS = 14, |
| 69 | LTTNG_REGISTER_CONSUMER = 15, |
| 70 | LTTNG_START_TRACE = 16, |
| 71 | LTTNG_STOP_TRACE = 17, |
| 72 | LTTNG_LIST_TRACEPOINT_FIELDS = 18, |
| 73 | |
| 74 | /* Consumer */ |
| 75 | LTTNG_DISABLE_CONSUMER = 19, |
| 76 | LTTNG_ENABLE_CONSUMER = 20, |
| 77 | LTTNG_SET_CONSUMER_URI = 21, |
| 78 | /* 22 */ |
| 79 | /* 23 */ |
| 80 | LTTNG_DATA_PENDING = 24, |
| 81 | LTTNG_SNAPSHOT_ADD_OUTPUT = 25, |
| 82 | LTTNG_SNAPSHOT_DEL_OUTPUT = 26, |
| 83 | LTTNG_SNAPSHOT_LIST_OUTPUT = 27, |
| 84 | LTTNG_SNAPSHOT_RECORD = 28, |
| 85 | /* 29 */ |
| 86 | /* 30 */ |
| 87 | LTTNG_SAVE_SESSION = 31, |
| 88 | LTTNG_PROCESS_ATTR_TRACKER_ADD_INCLUDE_VALUE = 32, |
| 89 | LTTNG_PROCESS_ATTR_TRACKER_REMOVE_INCLUDE_VALUE = 33, |
| 90 | LTTNG_PROCESS_ATTR_TRACKER_GET_POLICY = 34, |
| 91 | LTTNG_PROCESS_ATTR_TRACKER_SET_POLICY = 35, |
| 92 | LTTNG_PROCESS_ATTR_TRACKER_GET_INCLUSION_SET = 36, |
| 93 | LTTNG_SET_SESSION_SHM_PATH = 40, |
| 94 | LTTNG_REGENERATE_METADATA = 41, |
| 95 | LTTNG_REGENERATE_STATEDUMP = 42, |
| 96 | LTTNG_REGISTER_TRIGGER = 43, |
| 97 | LTTNG_UNREGISTER_TRIGGER = 44, |
| 98 | LTTNG_ROTATE_SESSION = 45, |
| 99 | LTTNG_ROTATION_GET_INFO = 46, |
| 100 | LTTNG_ROTATION_SET_SCHEDULE = 47, |
| 101 | LTTNG_SESSION_LIST_ROTATION_SCHEDULES = 48, |
| 102 | LTTNG_CREATE_SESSION_EXT = 49, |
| 103 | LTTNG_CLEAR_SESSION = 50, |
| 104 | LTTNG_LIST_TRIGGERS = 51, |
| 105 | LTTNG_EXECUTE_ERROR_QUERY = 52, |
| 106 | }; |
| 107 | |
| 108 | static inline |
| 109 | const char *lttcomm_sessiond_command_str(enum lttcomm_sessiond_command cmd) |
| 110 | { |
| 111 | switch (cmd) { |
| 112 | case LTTNG_ADD_CONTEXT: |
| 113 | return "LTTNG_ADD_CONTEXT"; |
| 114 | case LTTNG_DISABLE_CHANNEL: |
| 115 | return "LTTNG_DISABLE_CHANNEL"; |
| 116 | case LTTNG_DISABLE_EVENT: |
| 117 | return "LTTNG_DISABLE_EVENT"; |
| 118 | case LTTNG_LIST_SYSCALLS: |
| 119 | return "LTTNG_LIST_SYSCALLS"; |
| 120 | case LTTNG_ENABLE_CHANNEL: |
| 121 | return "LTTNG_ENABLE_CHANNEL"; |
| 122 | case LTTNG_ENABLE_EVENT: |
| 123 | return "LTTNG_ENABLE_EVENT"; |
| 124 | case LTTNG_DESTROY_SESSION: |
| 125 | return "LTTNG_DESTROY_SESSION"; |
| 126 | case LTTNG_LIST_CHANNELS: |
| 127 | return "LTTNG_LIST_CHANNELS"; |
| 128 | case LTTNG_LIST_DOMAINS: |
| 129 | return "LTTNG_LIST_DOMAINS"; |
| 130 | case LTTNG_LIST_EVENTS: |
| 131 | return "LTTNG_LIST_EVENTS"; |
| 132 | case LTTNG_LIST_SESSIONS: |
| 133 | return "LTTNG_LIST_SESSIONS"; |
| 134 | case LTTNG_LIST_TRACEPOINTS: |
| 135 | return "LTTNG_LIST_TRACEPOINTS"; |
| 136 | case LTTNG_REGISTER_CONSUMER: |
| 137 | return "LTTNG_REGISTER_CONSUMER"; |
| 138 | case LTTNG_START_TRACE: |
| 139 | return "LTTNG_START_TRACE"; |
| 140 | case LTTNG_STOP_TRACE: |
| 141 | return "LTTNG_STOP_TRACE"; |
| 142 | case LTTNG_LIST_TRACEPOINT_FIELDS: |
| 143 | return "LTTNG_LIST_TRACEPOINT_FIELDS"; |
| 144 | case LTTNG_DISABLE_CONSUMER: |
| 145 | return "LTTNG_DISABLE_CONSUMER"; |
| 146 | case LTTNG_ENABLE_CONSUMER: |
| 147 | return "LTTNG_ENABLE_CONSUMER"; |
| 148 | case LTTNG_SET_CONSUMER_URI: |
| 149 | return "LTTNG_SET_CONSUMER_URI"; |
| 150 | case LTTNG_DATA_PENDING: |
| 151 | return "LTTNG_DATA_PENDING"; |
| 152 | case LTTNG_SNAPSHOT_ADD_OUTPUT: |
| 153 | return "LTTNG_SNAPSHOT_ADD_OUTPUT"; |
| 154 | case LTTNG_SNAPSHOT_DEL_OUTPUT: |
| 155 | return "LTTNG_SNAPSHOT_DEL_OUTPUT"; |
| 156 | case LTTNG_SNAPSHOT_LIST_OUTPUT: |
| 157 | return "LTTNG_SNAPSHOT_LIST_OUTPUT"; |
| 158 | case LTTNG_SNAPSHOT_RECORD: |
| 159 | return "LTTNG_SNAPSHOT_RECORD"; |
| 160 | case LTTNG_SAVE_SESSION: |
| 161 | return "LTTNG_SAVE_SESSION"; |
| 162 | case LTTNG_PROCESS_ATTR_TRACKER_ADD_INCLUDE_VALUE: |
| 163 | return "LTTNG_PROCESS_ATTR_TRACKER_ADD_INCLUDE_VALUE"; |
| 164 | case LTTNG_PROCESS_ATTR_TRACKER_REMOVE_INCLUDE_VALUE: |
| 165 | return "LTTNG_PROCESS_ATTR_TRACKER_REMOVE_INCLUDE_VALUE"; |
| 166 | case LTTNG_PROCESS_ATTR_TRACKER_GET_POLICY: |
| 167 | return "LTTNG_PROCESS_ATTR_TRACKER_GET_POLICY"; |
| 168 | case LTTNG_PROCESS_ATTR_TRACKER_SET_POLICY: |
| 169 | return "LTTNG_PROCESS_ATTR_TRACKER_SET_POLICY"; |
| 170 | case LTTNG_PROCESS_ATTR_TRACKER_GET_INCLUSION_SET: |
| 171 | return "LTTNG_PROCESS_ATTR_TRACKER_GET_INCLUSION_SET"; |
| 172 | case LTTNG_SET_SESSION_SHM_PATH: |
| 173 | return "LTTNG_SET_SESSION_SHM_PATH"; |
| 174 | case LTTNG_REGENERATE_METADATA: |
| 175 | return "LTTNG_REGENERATE_METADATA"; |
| 176 | case LTTNG_REGENERATE_STATEDUMP: |
| 177 | return "LTTNG_REGENERATE_STATEDUMP"; |
| 178 | case LTTNG_REGISTER_TRIGGER: |
| 179 | return "LTTNG_REGISTER_TRIGGER"; |
| 180 | case LTTNG_UNREGISTER_TRIGGER: |
| 181 | return "LTTNG_UNREGISTER_TRIGGER"; |
| 182 | case LTTNG_ROTATE_SESSION: |
| 183 | return "LTTNG_ROTATE_SESSION"; |
| 184 | case LTTNG_ROTATION_GET_INFO: |
| 185 | return "LTTNG_ROTATION_GET_INFO"; |
| 186 | case LTTNG_ROTATION_SET_SCHEDULE: |
| 187 | return "LTTNG_ROTATION_SET_SCHEDULE"; |
| 188 | case LTTNG_SESSION_LIST_ROTATION_SCHEDULES: |
| 189 | return "LTTNG_SESSION_LIST_ROTATION_SCHEDULES"; |
| 190 | case LTTNG_CREATE_SESSION_EXT: |
| 191 | return "LTTNG_CREATE_SESSION_EXT"; |
| 192 | case LTTNG_CLEAR_SESSION: |
| 193 | return "LTTNG_CLEAR_SESSION"; |
| 194 | case LTTNG_LIST_TRIGGERS: |
| 195 | return "LTTNG_LIST_TRIGGERS"; |
| 196 | case LTTNG_EXECUTE_ERROR_QUERY: |
| 197 | return "LTTNG_EXECUTE_ERROR_QUERY"; |
| 198 | default: |
| 199 | abort(); |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | enum lttcomm_relayd_command { |
| 204 | RELAYD_ADD_STREAM = 1, |
| 205 | RELAYD_CREATE_SESSION = 2, |
| 206 | RELAYD_START_DATA = 3, |
| 207 | RELAYD_UPDATE_SYNC_INFO = 4, |
| 208 | RELAYD_VERSION = 5, |
| 209 | RELAYD_SEND_METADATA = 6, |
| 210 | RELAYD_CLOSE_STREAM = 7, |
| 211 | RELAYD_DATA_PENDING = 8, |
| 212 | RELAYD_QUIESCENT_CONTROL = 9, |
| 213 | RELAYD_BEGIN_DATA_PENDING = 10, |
| 214 | RELAYD_END_DATA_PENDING = 11, |
| 215 | RELAYD_ADD_INDEX = 12, |
| 216 | RELAYD_SEND_INDEX = 13, |
| 217 | RELAYD_CLOSE_INDEX = 14, |
| 218 | /* Live-reading commands (2.4+). */ |
| 219 | RELAYD_LIST_SESSIONS = 15, |
| 220 | /* All streams of the channel have been sent to the relayd (2.4+). */ |
| 221 | RELAYD_STREAMS_SENT = 16, |
| 222 | /* Ask the relay to reset the metadata trace file (2.8+) */ |
| 223 | RELAYD_RESET_METADATA = 17, |
| 224 | /* Ask the relay to rotate a set of stream files (2.11+) */ |
| 225 | RELAYD_ROTATE_STREAMS = 18, |
| 226 | /* Ask the relay to create a trace chunk (2.11+) */ |
| 227 | RELAYD_CREATE_TRACE_CHUNK = 19, |
| 228 | /* Ask the relay to close a trace chunk (2.11+) */ |
| 229 | RELAYD_CLOSE_TRACE_CHUNK = 20, |
| 230 | /* Ask the relay whether a trace chunk exists (2.11+) */ |
| 231 | RELAYD_TRACE_CHUNK_EXISTS = 21, |
| 232 | /* Get the current configuration of a relayd peer (2.12+) */ |
| 233 | RELAYD_GET_CONFIGURATION = 22, |
| 234 | |
| 235 | /* Feature branch specific commands start at 10000. */ |
| 236 | }; |
| 237 | |
| 238 | static inline |
| 239 | const char *lttcomm_relayd_command_str(lttcomm_relayd_command cmd) |
| 240 | { |
| 241 | switch (cmd) { |
| 242 | case RELAYD_ADD_STREAM: |
| 243 | return "RELAYD_ADD_STREAM"; |
| 244 | case RELAYD_CREATE_SESSION: |
| 245 | return "RELAYD_CREATE_SESSION"; |
| 246 | case RELAYD_START_DATA: |
| 247 | return "RELAYD_START_DATA"; |
| 248 | case RELAYD_UPDATE_SYNC_INFO: |
| 249 | return "RELAYD_UPDATE_SYNC_INFO"; |
| 250 | case RELAYD_VERSION: |
| 251 | return "RELAYD_VERSION"; |
| 252 | case RELAYD_SEND_METADATA: |
| 253 | return "RELAYD_SEND_METADATA"; |
| 254 | case RELAYD_CLOSE_STREAM: |
| 255 | return "RELAYD_CLOSE_STREAM"; |
| 256 | case RELAYD_DATA_PENDING: |
| 257 | return "RELAYD_DATA_PENDING"; |
| 258 | case RELAYD_QUIESCENT_CONTROL: |
| 259 | return "RELAYD_QUIESCENT_CONTROL"; |
| 260 | case RELAYD_BEGIN_DATA_PENDING: |
| 261 | return "RELAYD_BEGIN_DATA_PENDING"; |
| 262 | case RELAYD_END_DATA_PENDING: |
| 263 | return "RELAYD_END_DATA_PENDING"; |
| 264 | case RELAYD_ADD_INDEX: |
| 265 | return "RELAYD_ADD_INDEX"; |
| 266 | case RELAYD_SEND_INDEX: |
| 267 | return "RELAYD_SEND_INDEX"; |
| 268 | case RELAYD_CLOSE_INDEX: |
| 269 | return "RELAYD_CLOSE_INDEX"; |
| 270 | case RELAYD_LIST_SESSIONS: |
| 271 | return "RELAYD_LIST_SESSIONS"; |
| 272 | case RELAYD_STREAMS_SENT: |
| 273 | return "RELAYD_STREAMS_SENT"; |
| 274 | case RELAYD_RESET_METADATA: |
| 275 | return "RELAYD_RESET_METADATA"; |
| 276 | case RELAYD_ROTATE_STREAMS: |
| 277 | return "RELAYD_ROTATE_STREAMS"; |
| 278 | case RELAYD_CREATE_TRACE_CHUNK: |
| 279 | return "RELAYD_CREATE_TRACE_CHUNK"; |
| 280 | case RELAYD_CLOSE_TRACE_CHUNK: |
| 281 | return "RELAYD_CLOSE_TRACE_CHUNK"; |
| 282 | case RELAYD_TRACE_CHUNK_EXISTS: |
| 283 | return "RELAYD_TRACE_CHUNK_EXISTS"; |
| 284 | case RELAYD_GET_CONFIGURATION: |
| 285 | return "RELAYD_GET_CONFIGURATION"; |
| 286 | default: |
| 287 | abort(); |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | /* |
| 292 | * lttcomm error code. |
| 293 | */ |
| 294 | enum lttcomm_return_code { |
| 295 | LTTCOMM_CONSUMERD_SUCCESS = 0, /* Everything went fine. */ |
| 296 | /* |
| 297 | * Some code paths use -1 to express an error, others |
| 298 | * negate this consumer return code. Starting codes at |
| 299 | * 100 ensures there is no mix-up between this error value |
| 300 | * and legitimate status codes. |
| 301 | */ |
| 302 | LTTCOMM_CONSUMERD_COMMAND_SOCK_READY = 100, /* Command socket ready */ |
| 303 | LTTCOMM_CONSUMERD_SUCCESS_RECV_FD, /* Success on receiving fds */ |
| 304 | LTTCOMM_CONSUMERD_ERROR_RECV_FD, /* Error on receiving fds */ |
| 305 | LTTCOMM_CONSUMERD_ERROR_RECV_CMD, /* Error on receiving command */ |
| 306 | LTTCOMM_CONSUMERD_POLL_ERROR, /* Error in polling thread */ |
| 307 | LTTCOMM_CONSUMERD_POLL_NVAL, /* Poll on closed fd */ |
| 308 | LTTCOMM_CONSUMERD_POLL_HUP, /* All fds have hungup */ |
| 309 | LTTCOMM_CONSUMERD_EXIT_SUCCESS, /* Consumerd exiting normally */ |
| 310 | LTTCOMM_CONSUMERD_EXIT_FAILURE, /* Consumerd exiting on error */ |
| 311 | LTTCOMM_CONSUMERD_OUTFD_ERROR, /* Error opening the tracefile */ |
| 312 | LTTCOMM_CONSUMERD_SPLICE_EBADF, /* EBADF from splice(2) */ |
| 313 | LTTCOMM_CONSUMERD_SPLICE_EINVAL, /* EINVAL from splice(2) */ |
| 314 | LTTCOMM_CONSUMERD_SPLICE_ENOMEM, /* ENOMEM from splice(2) */ |
| 315 | LTTCOMM_CONSUMERD_SPLICE_ESPIPE, /* ESPIPE from splice(2) */ |
| 316 | LTTCOMM_CONSUMERD_ENOMEM, /* Consumer is out of memory */ |
| 317 | LTTCOMM_CONSUMERD_ERROR_METADATA, /* Error with metadata. */ |
| 318 | LTTCOMM_CONSUMERD_FATAL, /* Fatal error. */ |
| 319 | LTTCOMM_CONSUMERD_RELAYD_FAIL, /* Error on remote relayd */ |
| 320 | LTTCOMM_CONSUMERD_CHANNEL_FAIL, /* Channel creation failed. */ |
| 321 | LTTCOMM_CONSUMERD_CHAN_NOT_FOUND, /* Channel not found. */ |
| 322 | LTTCOMM_CONSUMERD_ALREADY_SET, /* Resource already set. */ |
| 323 | LTTCOMM_CONSUMERD_ROTATION_FAIL, /* Rotation has failed. */ |
| 324 | LTTCOMM_CONSUMERD_SNAPSHOT_FAILED, /* snapshot has failed. */ |
| 325 | LTTCOMM_CONSUMERD_CREATE_TRACE_CHUNK_FAILED,/* Trace chunk creation failed. */ |
| 326 | LTTCOMM_CONSUMERD_CLOSE_TRACE_CHUNK_FAILED, /* Trace chunk close failed. */ |
| 327 | LTTCOMM_CONSUMERD_INVALID_PARAMETERS, /* Invalid parameters. */ |
| 328 | LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_LOCAL, /* Trace chunk exists on consumer daemon. */ |
| 329 | LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_REMOTE,/* Trace chunk exists on relay daemon. */ |
| 330 | LTTCOMM_CONSUMERD_UNKNOWN_TRACE_CHUNK, /* Unknown trace chunk. */ |
| 331 | LTTCOMM_CONSUMERD_RELAYD_CLEAR_DISALLOWED, /* Relayd does not accept clear command. */ |
| 332 | LTTCOMM_CONSUMERD_UNKNOWN_ERROR, /* Unknown error. */ |
| 333 | |
| 334 | /* MUST be last element */ |
| 335 | LTTCOMM_NR, /* Last element */ |
| 336 | }; |
| 337 | |
| 338 | /* lttng socket protocol. */ |
| 339 | enum lttcomm_sock_proto { |
| 340 | LTTCOMM_SOCK_UDP, |
| 341 | LTTCOMM_SOCK_TCP, |
| 342 | }; |
| 343 | |
| 344 | /* |
| 345 | * Index in the net_families array below. Please keep in sync! |
| 346 | */ |
| 347 | enum lttcomm_sock_domain { |
| 348 | LTTCOMM_INET = 0, |
| 349 | LTTCOMM_INET6 = 1, |
| 350 | }; |
| 351 | |
| 352 | enum lttcomm_metadata_command { |
| 353 | LTTCOMM_METADATA_REQUEST = 1, |
| 354 | }; |
| 355 | |
| 356 | /* |
| 357 | * Commands sent from the consumerd to the sessiond to request if new metadata |
| 358 | * is available. This message is used to find the per UID _or_ per PID registry |
| 359 | * for the channel key. For per UID lookup, the triplet |
| 360 | * bits_per_long/uid/session_id is used. On lookup failure, we search for the |
| 361 | * per PID registry indexed by session id ignoring the other values. |
| 362 | */ |
| 363 | struct lttcomm_metadata_request_msg { |
| 364 | uint64_t session_id; /* Tracing session id */ |
| 365 | uint64_t session_id_per_pid; /* Tracing session id for per-pid */ |
| 366 | uint32_t bits_per_long; /* Consumer ABI */ |
| 367 | uint32_t uid; |
| 368 | uint64_t key; /* Metadata channel key. */ |
| 369 | } LTTNG_PACKED; |
| 370 | |
| 371 | struct lttcomm_sockaddr { |
| 372 | enum lttcomm_sock_domain type; |
| 373 | union { |
| 374 | struct sockaddr_in sin; |
| 375 | struct sockaddr_in6 sin6; |
| 376 | } addr; |
| 377 | } LTTNG_PACKED; |
| 378 | |
| 379 | struct lttcomm_sock { |
| 380 | int32_t fd; |
| 381 | enum lttcomm_sock_proto proto; |
| 382 | struct lttcomm_sockaddr sockaddr; |
| 383 | const struct lttcomm_proto_ops *ops; |
| 384 | } LTTNG_PACKED; |
| 385 | |
| 386 | /* |
| 387 | * Relayd sock. Adds the protocol version to use for the communications with |
| 388 | * the relayd. |
| 389 | */ |
| 390 | struct lttcomm_relayd_sock { |
| 391 | struct lttcomm_sock sock; |
| 392 | uint32_t major; |
| 393 | uint32_t minor; |
| 394 | } LTTNG_PACKED; |
| 395 | |
| 396 | struct lttcomm_net_family { |
| 397 | int family; |
| 398 | int (*create) (struct lttcomm_sock *sock, int type, int proto); |
| 399 | }; |
| 400 | |
| 401 | struct lttcomm_proto_ops { |
| 402 | int (*bind) (struct lttcomm_sock *sock); |
| 403 | int (*close) (struct lttcomm_sock *sock); |
| 404 | int (*connect) (struct lttcomm_sock *sock); |
| 405 | struct lttcomm_sock *(*accept) (struct lttcomm_sock *sock); |
| 406 | int (*listen) (struct lttcomm_sock *sock, int backlog); |
| 407 | ssize_t (*recvmsg) (struct lttcomm_sock *sock, void *buf, size_t len, |
| 408 | int flags); |
| 409 | ssize_t (*sendmsg) (struct lttcomm_sock *sock, const void *buf, |
| 410 | size_t len, int flags); |
| 411 | }; |
| 412 | |
| 413 | struct process_attr_integral_value_comm { |
| 414 | union { |
| 415 | int64_t _signed; |
| 416 | uint64_t _unsigned; |
| 417 | } u; |
| 418 | } LTTNG_PACKED; |
| 419 | |
| 420 | /* |
| 421 | * Data structure received from lttng client to session daemon. |
| 422 | */ |
| 423 | struct lttcomm_session_msg { |
| 424 | uint32_t cmd_type; /* enum lttcomm_sessiond_command */ |
| 425 | struct lttng_session session; |
| 426 | struct lttng_domain domain; |
| 427 | union { |
| 428 | /* Event data */ |
| 429 | struct { |
| 430 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; |
| 431 | struct lttng_event event; |
| 432 | /* Length of following filter expression. */ |
| 433 | uint32_t expression_len; |
| 434 | /* Length of following bytecode for filter. */ |
| 435 | uint32_t bytecode_len; |
| 436 | /* Exclusion count (fixed-size strings). */ |
| 437 | uint32_t exclusion_count; |
| 438 | /* Userspace probe location size. */ |
| 439 | uint32_t userspace_probe_location_len; |
| 440 | /* |
| 441 | * After this structure, the following variable-length |
| 442 | * items are transmitted: |
| 443 | * - char exclusion_names[LTTNG_SYMBOL_NAME_LEN][exclusion_count] |
| 444 | * - char filter_expression[expression_len] |
| 445 | * - unsigned char filter_bytecode[bytecode_len] |
| 446 | */ |
| 447 | } LTTNG_PACKED enable; |
| 448 | struct { |
| 449 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; |
| 450 | struct lttng_event event; |
| 451 | /* Length of following filter expression. */ |
| 452 | uint32_t expression_len; |
| 453 | /* Length of following bytecode for filter. */ |
| 454 | uint32_t bytecode_len; |
| 455 | /* |
| 456 | * After this structure, the following variable-length |
| 457 | * items are transmitted: |
| 458 | * - unsigned char filter_expression[expression_len] |
| 459 | * - unsigned char filter_bytecode[bytecode_len] |
| 460 | */ |
| 461 | } LTTNG_PACKED disable; |
| 462 | /* Create channel */ |
| 463 | struct { |
| 464 | struct lttng_channel chan; |
| 465 | struct lttng_channel_extended extended; |
| 466 | } LTTNG_PACKED channel; |
| 467 | /* Context */ |
| 468 | struct { |
| 469 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; |
| 470 | struct lttng_event_context ctx; |
| 471 | uint32_t provider_name_len; |
| 472 | uint32_t context_name_len; |
| 473 | } LTTNG_PACKED context; |
| 474 | /* Use by register_consumer */ |
| 475 | struct { |
| 476 | char path[PATH_MAX]; |
| 477 | } LTTNG_PACKED reg; |
| 478 | /* List */ |
| 479 | struct { |
| 480 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; |
| 481 | } LTTNG_PACKED list; |
| 482 | struct lttng_calibrate calibrate; |
| 483 | /* Used by the set_consumer_url and used by create_session also call */ |
| 484 | struct { |
| 485 | /* Number of lttng_uri following */ |
| 486 | uint32_t size; |
| 487 | } LTTNG_PACKED uri; |
| 488 | struct { |
| 489 | struct lttng_snapshot_output output; |
| 490 | } LTTNG_PACKED snapshot_output; |
| 491 | struct { |
| 492 | uint32_t wait; |
| 493 | struct lttng_snapshot_output output; |
| 494 | } LTTNG_PACKED snapshot_record; |
| 495 | struct { |
| 496 | uint32_t nb_uri; |
| 497 | unsigned int timer_interval; /* usec */ |
| 498 | } LTTNG_PACKED session_live; |
| 499 | struct { |
| 500 | struct lttng_save_session_attr attr; |
| 501 | } LTTNG_PACKED save_session; |
| 502 | struct { |
| 503 | char shm_path[PATH_MAX]; |
| 504 | } LTTNG_PACKED set_shm_path; |
| 505 | struct { |
| 506 | /* enum lttng_process_attr */ |
| 507 | int32_t process_attr; |
| 508 | /* enum lttng_process_attr_value_type */ |
| 509 | int32_t value_type; |
| 510 | |
| 511 | struct process_attr_integral_value_comm integral_value; |
| 512 | /* |
| 513 | * For user/group names, a variable length, |
| 514 | * zero-terminated, string of length 'name_len' |
| 515 | * (including the terminator) follows. |
| 516 | * |
| 517 | * integral_value should not be used in those cases. |
| 518 | */ |
| 519 | uint32_t name_len; |
| 520 | } LTTNG_PACKED process_attr_tracker_add_remove_include_value; |
| 521 | struct { |
| 522 | /* enum lttng_process_attr */ |
| 523 | int32_t process_attr; |
| 524 | } LTTNG_PACKED process_attr_tracker_get_inclusion_set; |
| 525 | struct { |
| 526 | /* enum lttng_process_attr */ |
| 527 | int32_t process_attr; |
| 528 | } LTTNG_PACKED process_attr_tracker_get_tracking_policy; |
| 529 | struct { |
| 530 | /* enum lttng_process_attr */ |
| 531 | int32_t process_attr; |
| 532 | /* enum lttng_tracking_policy */ |
| 533 | int32_t tracking_policy; |
| 534 | } LTTNG_PACKED process_attr_tracker_set_tracking_policy; |
| 535 | struct { |
| 536 | uint32_t length; |
| 537 | uint8_t is_trigger_anonymous; |
| 538 | } LTTNG_PACKED trigger; |
| 539 | struct { |
| 540 | uint32_t length; |
| 541 | } LTTNG_PACKED error_query; |
| 542 | struct { |
| 543 | uint64_t rotation_id; |
| 544 | } LTTNG_PACKED get_rotation_info; |
| 545 | struct { |
| 546 | /* enum lttng_rotation_schedule_type */ |
| 547 | uint8_t type; |
| 548 | /* |
| 549 | * If set == 1, set schedule to value, if set == 0, |
| 550 | * clear this schedule type. |
| 551 | */ |
| 552 | uint8_t set; |
| 553 | uint64_t value; |
| 554 | } LTTNG_PACKED rotation_set_schedule; |
| 555 | struct { |
| 556 | /* |
| 557 | * Includes the null-terminator. |
| 558 | * Must be an absolute path. |
| 559 | * |
| 560 | * Size bounded by LTTNG_PATH_MAX. |
| 561 | */ |
| 562 | uint16_t home_dir_size; |
| 563 | uint64_t session_descriptor_size; |
| 564 | /* An lttng_session_descriptor follows. */ |
| 565 | } LTTNG_PACKED create_session; |
| 566 | } u; |
| 567 | /* Count of fds sent. */ |
| 568 | uint32_t fd_count; |
| 569 | } LTTNG_PACKED; |
| 570 | |
| 571 | #define LTTNG_FILTER_MAX_LEN 65536 |
| 572 | #define LTTNG_SESSION_DESCRIPTOR_MAX_LEN 65536 |
| 573 | |
| 574 | /* |
| 575 | * Filter bytecode data. The reloc table is located at the end of the |
| 576 | * bytecode. It is made of tuples: (uint16_t, var. len. string). It |
| 577 | * starts at reloc_table_offset. |
| 578 | */ |
| 579 | #define LTTNG_FILTER_PADDING 32 |
| 580 | struct lttng_bytecode { |
| 581 | uint32_t len; /* len of data */ |
| 582 | uint32_t reloc_table_offset; |
| 583 | uint64_t seqnum; |
| 584 | char padding[LTTNG_FILTER_PADDING]; |
| 585 | char data[0]; |
| 586 | } LTTNG_PACKED; |
| 587 | |
| 588 | /* |
| 589 | * Event exclusion data. At the end of the structure, there will actually |
| 590 | * by zero or more names, where the actual number of names is given by |
| 591 | * the 'count' item of the structure. |
| 592 | */ |
| 593 | #define LTTNG_EVENT_EXCLUSION_PADDING 32 |
| 594 | struct lttng_event_exclusion { |
| 595 | uint32_t count; |
| 596 | char padding[LTTNG_EVENT_EXCLUSION_PADDING]; |
| 597 | char names[0][LTTNG_SYMBOL_NAME_LEN]; |
| 598 | } LTTNG_PACKED; |
| 599 | |
| 600 | #define LTTNG_EVENT_EXCLUSION_NAME_AT(_exclusion, _i) \ |
| 601 | (&(_exclusion)->names[_i][0]) |
| 602 | |
| 603 | /* |
| 604 | * Event command header. |
| 605 | */ |
| 606 | struct lttcomm_event_command_header { |
| 607 | /* Number of events */ |
| 608 | uint32_t nb_events; |
| 609 | } LTTNG_PACKED; |
| 610 | |
| 611 | /* |
| 612 | * Event extended info header. This is the structure preceding each |
| 613 | * extended info data. |
| 614 | */ |
| 615 | struct lttcomm_event_extended_header { |
| 616 | /* |
| 617 | * Size of filter string immediately following this header. |
| 618 | * This size includes the terminal null character. |
| 619 | */ |
| 620 | uint32_t filter_len; |
| 621 | |
| 622 | /* |
| 623 | * Number of exclusion names, immediately following the filter |
| 624 | * string. Each exclusion name has a fixed length of |
| 625 | * LTTNG_SYMBOL_NAME_LEN bytes, including the terminal null |
| 626 | * character. |
| 627 | */ |
| 628 | uint32_t nb_exclusions; |
| 629 | |
| 630 | /* |
| 631 | * Size of the event's userspace probe location (if applicable). |
| 632 | */ |
| 633 | uint32_t userspace_probe_location_len; |
| 634 | } LTTNG_PACKED; |
| 635 | |
| 636 | /* |
| 637 | * Command header of the reply to an LTTNG_DESTROY_SESSION command. |
| 638 | */ |
| 639 | struct lttcomm_session_destroy_command_header { |
| 640 | /* enum lttng_session */ |
| 641 | int32_t rotation_state; |
| 642 | }; |
| 643 | |
| 644 | /* |
| 645 | * tracker command header. |
| 646 | */ |
| 647 | struct lttcomm_tracker_command_header { |
| 648 | uint32_t nb_tracker_id; |
| 649 | } LTTNG_PACKED; |
| 650 | |
| 651 | /* |
| 652 | * Data structure for the response from sessiond to the lttng client. |
| 653 | */ |
| 654 | struct lttcomm_lttng_msg { |
| 655 | uint32_t cmd_type; /* enum lttcomm_sessiond_command */ |
| 656 | uint32_t ret_code; /* enum lttcomm_return_code */ |
| 657 | uint32_t pid; /* pid_t */ |
| 658 | uint32_t cmd_header_size; |
| 659 | uint32_t data_size; |
| 660 | uint32_t fd_count; |
| 661 | } LTTNG_PACKED; |
| 662 | |
| 663 | struct lttcomm_lttng_output_id { |
| 664 | uint32_t id; |
| 665 | } LTTNG_PACKED; |
| 666 | |
| 667 | /* |
| 668 | * lttcomm_consumer_msg is the message sent from sessiond to consumerd |
| 669 | * to either add a channel, add a stream, update a stream, or stop |
| 670 | * operation. |
| 671 | */ |
| 672 | struct lttcomm_consumer_msg { |
| 673 | uint32_t cmd_type; /* enum lttng_consumer_command */ |
| 674 | union { |
| 675 | struct { |
| 676 | uint64_t channel_key; |
| 677 | uint64_t session_id; |
| 678 | /* ID of the session's current trace chunk. */ |
| 679 | LTTNG_OPTIONAL_COMM(uint64_t) LTTNG_PACKED chunk_id; |
| 680 | char pathname[PATH_MAX]; |
| 681 | uint64_t relayd_id; |
| 682 | /* nb_init_streams is the number of streams open initially. */ |
| 683 | uint32_t nb_init_streams; |
| 684 | char name[LTTNG_SYMBOL_NAME_LEN]; |
| 685 | /* Use splice or mmap to consume this fd */ |
| 686 | enum lttng_event_output output; |
| 687 | int type; /* Per cpu or metadata. */ |
| 688 | uint64_t tracefile_size; /* bytes */ |
| 689 | uint32_t tracefile_count; /* number of tracefiles */ |
| 690 | /* If the channel's streams have to be monitored or not. */ |
| 691 | uint32_t monitor; |
| 692 | /* timer to check the streams usage in live mode (usec). */ |
| 693 | unsigned int live_timer_interval; |
| 694 | /* is part of a live session */ |
| 695 | uint8_t is_live; |
| 696 | /* timer to sample a channel's positions (usec). */ |
| 697 | unsigned int monitor_timer_interval; |
| 698 | } LTTNG_PACKED channel; /* Only used by Kernel. */ |
| 699 | struct { |
| 700 | uint64_t stream_key; |
| 701 | uint64_t channel_key; |
| 702 | int32_t cpu; /* On which CPU this stream is assigned. */ |
| 703 | /* Tells the consumer if the stream should be or not monitored. */ |
| 704 | uint32_t no_monitor; |
| 705 | } LTTNG_PACKED stream; /* Only used by Kernel. */ |
| 706 | struct { |
| 707 | uint64_t net_index; |
| 708 | enum lttng_stream_type type; |
| 709 | /* Open socket to the relayd */ |
| 710 | struct lttcomm_relayd_sock sock; |
| 711 | /* Tracing session id associated to the relayd. */ |
| 712 | uint64_t session_id; |
| 713 | /* Relayd session id, only used with control socket. */ |
| 714 | uint64_t relayd_session_id; |
| 715 | } LTTNG_PACKED relayd_sock; |
| 716 | struct { |
| 717 | uint64_t net_seq_idx; |
| 718 | } LTTNG_PACKED destroy_relayd; |
| 719 | struct { |
| 720 | uint64_t session_id; |
| 721 | } LTTNG_PACKED data_pending; |
| 722 | struct { |
| 723 | uint64_t subbuf_size; /* bytes */ |
| 724 | uint64_t num_subbuf; /* power of 2 */ |
| 725 | int32_t overwrite; /* 1: overwrite, 0: discard */ |
| 726 | uint32_t switch_timer_interval; /* usec */ |
| 727 | uint32_t read_timer_interval; /* usec */ |
| 728 | unsigned int live_timer_interval; /* usec */ |
| 729 | uint8_t is_live; /* is part of a live session */ |
| 730 | uint32_t monitor_timer_interval; /* usec */ |
| 731 | int32_t output; /* splice, mmap */ |
| 732 | int32_t type; /* metadata or per_cpu */ |
| 733 | uint64_t session_id; /* Tracing session id */ |
| 734 | char pathname[PATH_MAX]; /* Channel file path. */ |
| 735 | char name[LTTNG_SYMBOL_NAME_LEN]; /* Channel name. */ |
| 736 | /* Credentials used to open the UST buffer shared mappings. */ |
| 737 | struct { |
| 738 | uint32_t uid; |
| 739 | uint32_t gid; |
| 740 | } LTTNG_PACKED buffer_credentials; |
| 741 | uint64_t relayd_id; /* Relayd id if apply. */ |
| 742 | uint64_t key; /* Unique channel key. */ |
| 743 | /* ID of the session's current trace chunk. */ |
| 744 | LTTNG_OPTIONAL_COMM(uint64_t) LTTNG_PACKED chunk_id; |
| 745 | unsigned char uuid[LTTNG_UUID_LEN]; /* uuid for ust tracer. */ |
| 746 | uint32_t chan_id; /* Channel ID on the tracer side. */ |
| 747 | uint64_t tracefile_size; /* bytes */ |
| 748 | uint32_t tracefile_count; /* number of tracefiles */ |
| 749 | uint64_t session_id_per_pid; /* Per-pid session ID. */ |
| 750 | /* Tells the consumer if the stream should be or not monitored. */ |
| 751 | uint32_t monitor; |
| 752 | /* |
| 753 | * For UST per UID buffers, this is the application UID of the |
| 754 | * channel. This can be different from the user UID requesting the |
| 755 | * channel creation and used for the rights on the stream file |
| 756 | * because the application can be in the tracing for instance. |
| 757 | */ |
| 758 | uint32_t ust_app_uid; |
| 759 | int64_t blocking_timeout; |
| 760 | char root_shm_path[PATH_MAX]; |
| 761 | char shm_path[PATH_MAX]; |
| 762 | } LTTNG_PACKED ask_channel; |
| 763 | struct { |
| 764 | uint64_t key; |
| 765 | } LTTNG_PACKED get_channel; |
| 766 | struct { |
| 767 | uint64_t key; |
| 768 | } LTTNG_PACKED destroy_channel; |
| 769 | struct { |
| 770 | uint64_t key; /* Metadata channel key. */ |
| 771 | uint64_t target_offset; /* Offset in the consumer */ |
| 772 | uint64_t len; /* Length of metadata to be received. */ |
| 773 | uint64_t version; /* Version of the metadata. */ |
| 774 | } LTTNG_PACKED push_metadata; |
| 775 | struct { |
| 776 | uint64_t key; /* Metadata channel key. */ |
| 777 | } LTTNG_PACKED close_metadata; |
| 778 | struct { |
| 779 | uint64_t key; /* Metadata channel key. */ |
| 780 | } LTTNG_PACKED setup_metadata; |
| 781 | struct { |
| 782 | uint64_t key; /* Channel key. */ |
| 783 | } LTTNG_PACKED flush_channel; |
| 784 | struct { |
| 785 | uint64_t key; /* Channel key. */ |
| 786 | } LTTNG_PACKED clear_quiescent_channel; |
| 787 | struct { |
| 788 | char pathname[PATH_MAX]; |
| 789 | /* Indicate if the snapshot goes on the relayd or locally. */ |
| 790 | uint32_t use_relayd; |
| 791 | uint32_t metadata; /* This a metadata snapshot. */ |
| 792 | uint64_t relayd_id; /* Relayd id if apply. */ |
| 793 | uint64_t key; |
| 794 | uint64_t nb_packets_per_stream; |
| 795 | } LTTNG_PACKED snapshot_channel; |
| 796 | struct { |
| 797 | uint64_t channel_key; |
| 798 | uint64_t net_seq_idx; |
| 799 | } LTTNG_PACKED sent_streams; |
| 800 | struct { |
| 801 | uint64_t session_id; |
| 802 | uint64_t channel_key; |
| 803 | } LTTNG_PACKED discarded_events; |
| 804 | struct { |
| 805 | uint64_t session_id; |
| 806 | uint64_t channel_key; |
| 807 | } LTTNG_PACKED lost_packets; |
| 808 | struct { |
| 809 | uint64_t session_id; |
| 810 | } LTTNG_PACKED regenerate_metadata; |
| 811 | struct { |
| 812 | uint32_t metadata; /* This is a metadata channel. */ |
| 813 | uint64_t relayd_id; /* Relayd id if apply. */ |
| 814 | uint64_t key; |
| 815 | } LTTNG_PACKED rotate_channel; |
| 816 | struct { |
| 817 | uint64_t session_id; |
| 818 | uint64_t chunk_id; |
| 819 | } LTTNG_PACKED check_rotation_pending_local; |
| 820 | struct { |
| 821 | uint64_t relayd_id; |
| 822 | uint64_t session_id; |
| 823 | uint64_t chunk_id; |
| 824 | } LTTNG_PACKED check_rotation_pending_relay; |
| 825 | struct { |
| 826 | /* |
| 827 | * Relayd id, if applicable (remote). |
| 828 | * |
| 829 | * A directory file descriptor referring to the chunk's |
| 830 | * output folder is transmitted if the chunk is local |
| 831 | * (relayd_id unset). |
| 832 | * |
| 833 | * `override_name` is left NULL (all-zeroes) if the |
| 834 | * chunk's name is not overridden. |
| 835 | */ |
| 836 | LTTNG_OPTIONAL_COMM(uint64_t) LTTNG_PACKED relayd_id; |
| 837 | char override_name[LTTNG_NAME_MAX]; |
| 838 | uint64_t session_id; |
| 839 | uint64_t chunk_id; |
| 840 | uint64_t creation_timestamp; |
| 841 | LTTNG_OPTIONAL_COMM(struct { |
| 842 | uint32_t uid; |
| 843 | uint32_t gid; |
| 844 | } LTTNG_PACKED ) LTTNG_PACKED credentials; |
| 845 | } LTTNG_PACKED create_trace_chunk; |
| 846 | struct { |
| 847 | LTTNG_OPTIONAL_COMM(uint64_t) LTTNG_PACKED relayd_id; |
| 848 | uint64_t session_id; |
| 849 | uint64_t chunk_id; |
| 850 | uint64_t close_timestamp; |
| 851 | /* enum lttng_trace_chunk_command_type */ |
| 852 | LTTNG_OPTIONAL_COMM(uint32_t) LTTNG_PACKED close_command; |
| 853 | } LTTNG_PACKED close_trace_chunk; |
| 854 | struct { |
| 855 | LTTNG_OPTIONAL_COMM(uint64_t) LTTNG_PACKED relayd_id; |
| 856 | uint64_t session_id; |
| 857 | uint64_t chunk_id; |
| 858 | } LTTNG_PACKED trace_chunk_exists; |
| 859 | struct { |
| 860 | lttng_uuid sessiond_uuid; |
| 861 | } LTTNG_PACKED init; |
| 862 | struct { |
| 863 | uint64_t key; |
| 864 | } LTTNG_PACKED clear_channel; |
| 865 | struct { |
| 866 | uint64_t key; |
| 867 | } LTTNG_PACKED open_channel_packets; |
| 868 | } u; |
| 869 | } LTTNG_PACKED; |
| 870 | |
| 871 | /* |
| 872 | * Channel monitoring message returned to the session daemon on every |
| 873 | * monitor timer expiration. |
| 874 | */ |
| 875 | struct lttcomm_consumer_channel_monitor_msg { |
| 876 | /* Key of the sampled channel. */ |
| 877 | uint64_t key; |
| 878 | /* |
| 879 | * Lowest and highest usage (bytes) at the moment the sample was taken. |
| 880 | */ |
| 881 | uint64_t lowest, highest; |
| 882 | /* |
| 883 | * Sum of all the consumed positions for a channel. |
| 884 | */ |
| 885 | uint64_t total_consumed; |
| 886 | } LTTNG_PACKED; |
| 887 | |
| 888 | /* |
| 889 | * Status message returned to the sessiond after a received command. |
| 890 | */ |
| 891 | struct lttcomm_consumer_status_msg { |
| 892 | enum lttcomm_return_code ret_code; |
| 893 | } LTTNG_PACKED; |
| 894 | |
| 895 | struct lttcomm_consumer_status_channel { |
| 896 | enum lttcomm_return_code ret_code; |
| 897 | uint64_t key; |
| 898 | unsigned int stream_count; |
| 899 | } LTTNG_PACKED; |
| 900 | |
| 901 | struct lttcomm_consumer_close_trace_chunk_reply { |
| 902 | enum lttcomm_return_code ret_code; |
| 903 | uint32_t path_length; |
| 904 | char path[]; |
| 905 | }; |
| 906 | |
| 907 | #ifdef HAVE_LIBLTTNG_UST_CTL |
| 908 | |
| 909 | #include <lttng/ust-abi.h> |
| 910 | |
| 911 | /* |
| 912 | * Data structure for the commands sent from sessiond to UST. |
| 913 | */ |
| 914 | struct lttcomm_ust_msg { |
| 915 | uint32_t handle; |
| 916 | uint32_t cmd; |
| 917 | union { |
| 918 | struct lttng_ust_abi_channel channel; |
| 919 | struct lttng_ust_abi_stream stream; |
| 920 | struct lttng_ust_abi_event event; |
| 921 | struct lttng_ust_abi_context context; |
| 922 | struct lttng_ust_abi_tracer_version version; |
| 923 | } u; |
| 924 | } LTTNG_PACKED; |
| 925 | |
| 926 | /* |
| 927 | * Data structure for the response from UST to the session daemon. |
| 928 | * cmd_type is sent back in the reply for validation. |
| 929 | */ |
| 930 | struct lttcomm_ust_reply { |
| 931 | uint32_t handle; |
| 932 | uint32_t cmd; |
| 933 | uint32_t ret_code; /* enum lttcomm_return_code */ |
| 934 | uint32_t ret_val; /* return value */ |
| 935 | union { |
| 936 | struct { |
| 937 | uint64_t memory_map_size; |
| 938 | } LTTNG_PACKED channel; |
| 939 | struct { |
| 940 | uint64_t memory_map_size; |
| 941 | } LTTNG_PACKED stream; |
| 942 | struct lttng_ust_abi_tracer_version version; |
| 943 | } u; |
| 944 | } LTTNG_PACKED; |
| 945 | |
| 946 | #endif /* HAVE_LIBLTTNG_UST_CTL */ |
| 947 | |
| 948 | const char *lttcomm_get_readable_code(enum lttcomm_return_code code); |
| 949 | |
| 950 | int lttcomm_init_inet_sockaddr(struct lttcomm_sockaddr *sockaddr, |
| 951 | const char *ip, unsigned int port); |
| 952 | int lttcomm_init_inet6_sockaddr(struct lttcomm_sockaddr *sockaddr, |
| 953 | const char *ip, unsigned int port); |
| 954 | |
| 955 | struct lttcomm_sock *lttcomm_alloc_sock(enum lttcomm_sock_proto proto); |
| 956 | int lttcomm_create_sock(struct lttcomm_sock *sock); |
| 957 | struct lttcomm_sock *lttcomm_alloc_sock_from_uri(struct lttng_uri *uri); |
| 958 | void lttcomm_destroy_sock(struct lttcomm_sock *sock); |
| 959 | struct lttcomm_sock *lttcomm_alloc_copy_sock(struct lttcomm_sock *src); |
| 960 | void lttcomm_copy_sock(struct lttcomm_sock *dst, |
| 961 | struct lttcomm_sock *src); |
| 962 | |
| 963 | /* Relayd socket object. */ |
| 964 | struct lttcomm_relayd_sock *lttcomm_alloc_relayd_sock( |
| 965 | struct lttng_uri *uri, uint32_t major, uint32_t minor); |
| 966 | |
| 967 | int lttcomm_setsockopt_rcv_timeout(int sock, unsigned int msec); |
| 968 | int lttcomm_setsockopt_snd_timeout(int sock, unsigned int msec); |
| 969 | |
| 970 | int lttcomm_sock_get_port(const struct lttcomm_sock *sock, |
| 971 | uint16_t *port); |
| 972 | /* |
| 973 | * Set a port to an lttcomm_sock. This will have no effect is the socket is |
| 974 | * already bound. |
| 975 | */ |
| 976 | int lttcomm_sock_set_port(struct lttcomm_sock *sock, uint16_t port); |
| 977 | |
| 978 | void lttcomm_init(void); |
| 979 | /* Get network timeout, in milliseconds */ |
| 980 | unsigned long lttcomm_get_network_timeout(void); |
| 981 | |
| 982 | #endif /* _LTTNG_SESSIOND_COMM_H */ |