Commit | Line | Data |
---|---|---|
b8aa1682 | 1 | /* |
ab5be9fa MJ |
2 | * Copyright (C) 2012 Julien Desfossez <jdesfossez@efficios.com> |
3 | * Copyright (C) 2012 David Goulet <dgoulet@efficios.com> | |
4 | * Copyright (C) 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
5 | * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
b8aa1682 | 6 | * |
ab5be9fa | 7 | * SPDX-License-Identifier: GPL-2.0-only |
b8aa1682 | 8 | * |
b8aa1682 JD |
9 | */ |
10 | ||
6c1c0768 | 11 | #define _LGPL_SOURCE |
b8aa1682 JD |
12 | #include <getopt.h> |
13 | #include <grp.h> | |
14 | #include <limits.h> | |
15 | #include <pthread.h> | |
16 | #include <signal.h> | |
17 | #include <stdio.h> | |
18 | #include <stdlib.h> | |
19 | #include <string.h> | |
20 | #include <sys/mman.h> | |
21 | #include <sys/mount.h> | |
22 | #include <sys/resource.h> | |
23 | #include <sys/socket.h> | |
24 | #include <sys/stat.h> | |
25 | #include <sys/types.h> | |
26 | #include <sys/wait.h> | |
896010e3 | 27 | #include <sys/resource.h> |
173af62f | 28 | #include <inttypes.h> |
b8aa1682 JD |
29 | #include <urcu/futex.h> |
30 | #include <urcu/uatomic.h> | |
70626904 | 31 | #include <urcu/rculist.h> |
b8aa1682 JD |
32 | #include <unistd.h> |
33 | #include <fcntl.h> | |
f8be1183 | 34 | #include <strings.h> |
896010e3 | 35 | #include <ctype.h> |
ac497a37 | 36 | #include <algorithm> |
b8aa1682 JD |
37 | |
38 | #include <lttng/lttng.h> | |
c9e313bc SM |
39 | #include <common/common.hpp> |
40 | #include <common/compat/poll.hpp> | |
41 | #include <common/compat/socket.hpp> | |
42 | #include <common/compat/endian.hpp> | |
43 | #include <common/compat/getenv.hpp> | |
44 | #include <common/defaults.hpp> | |
45 | #include <common/daemonize.hpp> | |
46 | #include <common/futex.hpp> | |
47 | #include <common/sessiond-comm/sessiond-comm.hpp> | |
48 | #include <common/sessiond-comm/inet.hpp> | |
49 | #include <common/sessiond-comm/relayd.hpp> | |
50 | #include <common/uri.hpp> | |
51 | #include <common/utils.hpp> | |
52 | #include <common/path.hpp> | |
53 | #include <common/align.hpp> | |
54 | #include <common/ini-config/ini-config.hpp> | |
55 | #include <common/dynamic-buffer.hpp> | |
56 | #include <common/buffer-view.hpp> | |
57 | #include <common/string-utils/format.hpp> | |
58 | #include <common/fd-tracker/fd-tracker.hpp> | |
59 | #include <common/fd-tracker/utils.hpp> | |
b8aa1682 | 60 | |
c9e313bc SM |
61 | #include "backward-compatibility-group-by.hpp" |
62 | #include "cmd.hpp" | |
63 | #include "connection.hpp" | |
64 | #include "ctf-trace.hpp" | |
65 | #include "health-relayd.hpp" | |
66 | #include "index.hpp" | |
67 | #include "live.hpp" | |
68 | #include "lttng-relayd.hpp" | |
69 | #include "session.hpp" | |
70 | #include "sessiond-trace-chunks.hpp" | |
71 | #include "stream.hpp" | |
72 | #include "tcp_keep_alive.hpp" | |
73 | #include "testpoint.hpp" | |
74 | #include "tracefile-array.hpp" | |
75 | #include "utils.hpp" | |
76 | #include "version.hpp" | |
77 | #include "viewer-stream.hpp" | |
b8aa1682 | 78 | |
4fc83d94 PP |
79 | static const char *help_msg = |
80 | #ifdef LTTNG_EMBED_HELP | |
81 | #include <lttng-relayd.8.h> | |
82 | #else | |
83 | NULL | |
84 | #endif | |
85 | ; | |
86 | ||
5569b118 JG |
87 | enum relay_connection_status { |
88 | RELAY_CONNECTION_STATUS_OK, | |
a9577b76 | 89 | /* An error occurred while processing an event on the connection. */ |
5569b118 JG |
90 | RELAY_CONNECTION_STATUS_ERROR, |
91 | /* Connection closed/shutdown cleanly. */ | |
92 | RELAY_CONNECTION_STATUS_CLOSED, | |
93 | }; | |
94 | ||
b8aa1682 | 95 | /* command line options */ |
ce9ee1fb | 96 | char *opt_output_path, *opt_working_directory; |
35ab25e5 | 97 | static int opt_daemon, opt_background, opt_print_version, opt_allow_clear = 1; |
a8b66566 | 98 | enum relay_group_output_by opt_group_output_by = RELAYD_GROUP_OUTPUT_BY_UNKNOWN; |
3fd27398 | 99 | |
e56e5792 MJ |
100 | /* Argument variables */ |
101 | int lttng_opt_quiet; /* not static in error.h */ | |
102 | int lttng_opt_verbose; /* not static in error.h */ | |
103 | int lttng_opt_mi; /* not static in error.h */ | |
104 | ||
3fd27398 MD |
105 | /* |
106 | * We need to wait for listener and live listener threads, as well as | |
107 | * health check thread, before being ready to signal readiness. | |
108 | */ | |
109 | #define NR_LTTNG_RELAY_READY 3 | |
110 | static int lttng_relay_ready = NR_LTTNG_RELAY_READY; | |
0848dba7 MD |
111 | |
112 | /* Size of receive buffer. */ | |
113 | #define RECV_DATA_BUFFER_SIZE 65536 | |
114 | ||
3fd27398 MD |
115 | static int recv_child_signal; /* Set to 1 when a SIGUSR1 signal is received. */ |
116 | static pid_t child_ppid; /* Internal parent PID use with daemonize. */ | |
117 | ||
095a4ae5 MD |
118 | static struct lttng_uri *control_uri; |
119 | static struct lttng_uri *data_uri; | |
d3e2ba59 | 120 | static struct lttng_uri *live_uri; |
b8aa1682 JD |
121 | |
122 | const char *progname; | |
b8aa1682 | 123 | |
65931c8b | 124 | const char *tracing_group_name = DEFAULT_TRACING_GROUP; |
cd60b05a JG |
125 | static int tracing_group_name_override; |
126 | ||
127 | const char * const config_section_name = "relayd"; | |
65931c8b | 128 | |
b8aa1682 JD |
129 | /* |
130 | * This pipe is used to inform the worker thread that a command is queued and | |
131 | * ready to be processed. | |
132 | */ | |
58eb9381 | 133 | static int relay_conn_pipe[2] = { -1, -1 }; |
b8aa1682 | 134 | |
26c9d55e | 135 | /* Shared between threads */ |
b8aa1682 JD |
136 | static int dispatch_thread_exit; |
137 | ||
138 | static pthread_t listener_thread; | |
139 | static pthread_t dispatcher_thread; | |
140 | static pthread_t worker_thread; | |
65931c8b | 141 | static pthread_t health_thread; |
b8aa1682 | 142 | |
7591bab1 MD |
143 | /* |
144 | * last_relay_stream_id_lock protects last_relay_stream_id increment | |
145 | * atomicity on 32-bit architectures. | |
146 | */ | |
147 | static pthread_mutex_t last_relay_stream_id_lock = PTHREAD_MUTEX_INITIALIZER; | |
095a4ae5 | 148 | static uint64_t last_relay_stream_id; |
b8aa1682 JD |
149 | |
150 | /* | |
151 | * Relay command queue. | |
152 | * | |
153 | * The relay_thread_listener and relay_thread_dispatcher communicate with this | |
154 | * queue. | |
155 | */ | |
58eb9381 | 156 | static struct relay_conn_queue relay_conn_queue; |
b8aa1682 | 157 | |
896010e3 | 158 | /* Cap of file desriptors to be in simultaneous use by the relay daemon. */ |
5c0551f9 | 159 | static unsigned int lttng_opt_fd_pool_size = -1; |
896010e3 | 160 | |
d3e2ba59 JD |
161 | /* Global relay stream hash table. */ |
162 | struct lttng_ht *relay_streams_ht; | |
163 | ||
92c6ca54 DG |
164 | /* Global relay viewer stream hash table. */ |
165 | struct lttng_ht *viewer_streams_ht; | |
166 | ||
7591bab1 MD |
167 | /* Global relay sessions hash table. */ |
168 | struct lttng_ht *sessions_ht; | |
0a6518b0 | 169 | |
55706a7d | 170 | /* Relayd health monitoring */ |
eea7556c | 171 | struct health_app *health_relayd; |
55706a7d | 172 | |
23c8ff50 JG |
173 | struct sessiond_trace_chunk_registry *sessiond_trace_chunk_registry; |
174 | ||
00e3b7f1 JG |
175 | /* Global fd tracker. */ |
176 | struct fd_tracker *the_fd_tracker; | |
177 | ||
cd60b05a JG |
178 | static struct option long_options[] = { |
179 | { "control-port", 1, 0, 'C', }, | |
180 | { "data-port", 1, 0, 'D', }, | |
8d5c808e | 181 | { "live-port", 1, 0, 'L', }, |
cd60b05a | 182 | { "daemonize", 0, 0, 'd', }, |
b5218ffb | 183 | { "background", 0, 0, 'b', }, |
cd60b05a | 184 | { "group", 1, 0, 'g', }, |
5c0551f9 | 185 | { "fd-pool-size", 1, 0, '\0', }, |
cd60b05a JG |
186 | { "help", 0, 0, 'h', }, |
187 | { "output", 1, 0, 'o', }, | |
188 | { "verbose", 0, 0, 'v', }, | |
189 | { "config", 1, 0, 'f' }, | |
3a904098 | 190 | { "version", 0, 0, 'V' }, |
ce9ee1fb | 191 | { "working-directory", 1, 0, 'w', }, |
a8b66566 JR |
192 | { "group-output-by-session", 0, 0, 's', }, |
193 | { "group-output-by-host", 0, 0, 'p', }, | |
35ab25e5 | 194 | { "disallow-clear", 0, 0, 'x' }, |
cd60b05a JG |
195 | { NULL, 0, 0, 0, }, |
196 | }; | |
197 | ||
3a904098 | 198 | static const char *config_ignore_options[] = { "help", "config", "version" }; |
cd60b05a | 199 | |
a3bc3918 JR |
200 | static void print_version(void) { |
201 | fprintf(stdout, "%s\n", VERSION); | |
202 | } | |
203 | ||
204 | static void relayd_config_log(void) | |
205 | { | |
206 | DBG("LTTng-relayd " VERSION " - " VERSION_NAME "%s%s", | |
207 | GIT_VERSION[0] == '\0' ? "" : " - " GIT_VERSION, | |
208 | EXTRA_VERSION_NAME[0] == '\0' ? "" : " - " EXTRA_VERSION_NAME); | |
209 | if (EXTRA_VERSION_DESCRIPTION[0] != '\0') { | |
210 | DBG("LTTng-relayd extra version description:\n\t" EXTRA_VERSION_DESCRIPTION "\n"); | |
211 | } | |
7f5ed73a JR |
212 | if (EXTRA_VERSION_PATCHES[0] != '\0') { |
213 | DBG("LTTng-relayd extra patches:\n\t" EXTRA_VERSION_PATCHES "\n"); | |
214 | } | |
a3bc3918 JR |
215 | } |
216 | ||
cd60b05a JG |
217 | /* |
218 | * Take an option from the getopt output and set it in the right variable to be | |
219 | * used later. | |
220 | * | |
221 | * Return 0 on success else a negative value. | |
222 | */ | |
7591bab1 | 223 | static int set_option(int opt, const char *arg, const char *optname) |
b8aa1682 | 224 | { |
cd60b05a JG |
225 | int ret; |
226 | ||
227 | switch (opt) { | |
228 | case 0: | |
5c0551f9 | 229 | if (!strcmp(optname, "fd-pool-size")) { |
896010e3 JG |
230 | unsigned long v; |
231 | ||
232 | errno = 0; | |
233 | v = strtoul(arg, NULL, 0); | |
60b7e1f8 | 234 | if (errno != 0 || !isdigit((unsigned char) arg[0])) { |
5c0551f9 | 235 | ERR("Wrong value in --fd-pool-size parameter: %s", arg); |
896010e3 JG |
236 | ret = -1; |
237 | goto end; | |
238 | } | |
896010e3 | 239 | if (v >= UINT_MAX) { |
5c0551f9 | 240 | ERR("File descriptor cap overflow in --fd-pool-size parameter: %s", arg); |
896010e3 JG |
241 | ret = -1; |
242 | goto end; | |
243 | } | |
5c0551f9 | 244 | lttng_opt_fd_pool_size = (unsigned int) v; |
896010e3 JG |
245 | } else { |
246 | fprintf(stderr, "unknown option %s", optname); | |
247 | if (arg) { | |
248 | fprintf(stderr, " with arg %s\n", arg); | |
249 | } | |
cd60b05a JG |
250 | } |
251 | break; | |
252 | case 'C': | |
e8fa9fb0 MD |
253 | if (lttng_is_setuid_setgid()) { |
254 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
255 | "-C, --control-port"); | |
256 | } else { | |
257 | ret = uri_parse(arg, &control_uri); | |
258 | if (ret < 0) { | |
259 | ERR("Invalid control URI specified"); | |
260 | goto end; | |
261 | } | |
262 | if (control_uri->port == 0) { | |
263 | control_uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
264 | } | |
cd60b05a JG |
265 | } |
266 | break; | |
267 | case 'D': | |
e8fa9fb0 MD |
268 | if (lttng_is_setuid_setgid()) { |
269 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
270 | "-D, -data-port"); | |
271 | } else { | |
272 | ret = uri_parse(arg, &data_uri); | |
273 | if (ret < 0) { | |
274 | ERR("Invalid data URI specified"); | |
275 | goto end; | |
276 | } | |
277 | if (data_uri->port == 0) { | |
278 | data_uri->port = DEFAULT_NETWORK_DATA_PORT; | |
279 | } | |
cd60b05a JG |
280 | } |
281 | break; | |
8d5c808e | 282 | case 'L': |
e8fa9fb0 MD |
283 | if (lttng_is_setuid_setgid()) { |
284 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
285 | "-L, -live-port"); | |
286 | } else { | |
287 | ret = uri_parse(arg, &live_uri); | |
288 | if (ret < 0) { | |
289 | ERR("Invalid live URI specified"); | |
290 | goto end; | |
291 | } | |
292 | if (live_uri->port == 0) { | |
293 | live_uri->port = DEFAULT_NETWORK_VIEWER_PORT; | |
294 | } | |
8d5c808e AM |
295 | } |
296 | break; | |
cd60b05a JG |
297 | case 'd': |
298 | opt_daemon = 1; | |
299 | break; | |
b5218ffb MD |
300 | case 'b': |
301 | opt_background = 1; | |
302 | break; | |
cd60b05a | 303 | case 'g': |
e8fa9fb0 MD |
304 | if (lttng_is_setuid_setgid()) { |
305 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
306 | "-g, --group"); | |
307 | } else { | |
308 | tracing_group_name = strdup(arg); | |
309 | if (tracing_group_name == NULL) { | |
310 | ret = -errno; | |
311 | PERROR("strdup"); | |
312 | goto end; | |
313 | } | |
314 | tracing_group_name_override = 1; | |
330a40bb | 315 | } |
cd60b05a JG |
316 | break; |
317 | case 'h': | |
4fc83d94 | 318 | ret = utils_show_help(8, "lttng-relayd", help_msg); |
655b5cc1 | 319 | if (ret) { |
4fc83d94 | 320 | ERR("Cannot show --help for `lttng-relayd`"); |
655b5cc1 PP |
321 | perror("exec"); |
322 | } | |
cd60b05a | 323 | exit(EXIT_FAILURE); |
3a904098 | 324 | case 'V': |
a3bc3918 JR |
325 | opt_print_version = 1; |
326 | break; | |
cd60b05a | 327 | case 'o': |
e8fa9fb0 MD |
328 | if (lttng_is_setuid_setgid()) { |
329 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
330 | "-o, --output"); | |
331 | } else { | |
332 | ret = asprintf(&opt_output_path, "%s", arg); | |
333 | if (ret < 0) { | |
334 | ret = -errno; | |
335 | PERROR("asprintf opt_output_path"); | |
336 | goto end; | |
337 | } | |
cd60b05a JG |
338 | } |
339 | break; | |
ce9ee1fb JR |
340 | case 'w': |
341 | if (lttng_is_setuid_setgid()) { | |
342 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
343 | "-w, --working-directory"); | |
344 | } else { | |
345 | ret = asprintf(&opt_working_directory, "%s", arg); | |
346 | if (ret < 0) { | |
347 | ret = -errno; | |
348 | PERROR("asprintf opt_working_directory"); | |
349 | goto end; | |
350 | } | |
351 | } | |
352 | break; | |
353 | ||
cd60b05a JG |
354 | case 'v': |
355 | /* Verbose level can increase using multiple -v */ | |
356 | if (arg) { | |
357 | lttng_opt_verbose = config_parse_value(arg); | |
358 | } else { | |
849e5b7b DG |
359 | /* Only 3 level of verbosity (-vvv). */ |
360 | if (lttng_opt_verbose < 3) { | |
361 | lttng_opt_verbose += 1; | |
362 | } | |
cd60b05a JG |
363 | } |
364 | break; | |
a8b66566 JR |
365 | case 's': |
366 | if (opt_group_output_by != RELAYD_GROUP_OUTPUT_BY_UNKNOWN) { | |
367 | ERR("Cannot set --group-output-by-session, another --group-output-by argument is present"); | |
368 | exit(EXIT_FAILURE); | |
369 | } | |
370 | opt_group_output_by = RELAYD_GROUP_OUTPUT_BY_SESSION; | |
371 | break; | |
372 | case 'p': | |
373 | if (opt_group_output_by != RELAYD_GROUP_OUTPUT_BY_UNKNOWN) { | |
374 | ERR("Cannot set --group-output-by-host, another --group-output-by argument is present"); | |
375 | exit(EXIT_FAILURE); | |
376 | } | |
377 | opt_group_output_by = RELAYD_GROUP_OUTPUT_BY_HOST; | |
378 | break; | |
35ab25e5 MD |
379 | case 'x': |
380 | /* Disallow clear */ | |
381 | opt_allow_clear = 0; | |
382 | break; | |
cd60b05a JG |
383 | default: |
384 | /* Unknown option or other error. | |
385 | * Error is printed by getopt, just return */ | |
386 | ret = -1; | |
387 | goto end; | |
388 | } | |
389 | ||
390 | /* All good. */ | |
391 | ret = 0; | |
392 | ||
393 | end: | |
394 | return ret; | |
395 | } | |
396 | ||
397 | /* | |
398 | * config_entry_handler_cb used to handle options read from a config file. | |
f40ef1d5 | 399 | * See config_entry_handler_cb comment in common/config/session-config.h for the |
cd60b05a JG |
400 | * return value conventions. |
401 | */ | |
f46376a1 MJ |
402 | static int config_entry_handler(const struct config_entry *entry, |
403 | void *unused __attribute__((unused))) | |
cd60b05a JG |
404 | { |
405 | int ret = 0, i; | |
406 | ||
407 | if (!entry || !entry->name || !entry->value) { | |
408 | ret = -EINVAL; | |
409 | goto end; | |
410 | } | |
411 | ||
412 | /* Check if the option is to be ignored */ | |
413 | for (i = 0; i < sizeof(config_ignore_options) / sizeof(char *); i++) { | |
414 | if (!strcmp(entry->name, config_ignore_options[i])) { | |
415 | goto end; | |
416 | } | |
417 | } | |
418 | ||
419 | for (i = 0; i < (sizeof(long_options) / sizeof(struct option)) - 1; i++) { | |
420 | /* Ignore if entry name is not fully matched. */ | |
421 | if (strcmp(entry->name, long_options[i].name)) { | |
422 | continue; | |
423 | } | |
424 | ||
425 | /* | |
7591bab1 MD |
426 | * If the option takes no argument on the command line, |
427 | * we have to check if the value is "true". We support | |
428 | * non-zero numeric values, true, on and yes. | |
cd60b05a JG |
429 | */ |
430 | if (!long_options[i].has_arg) { | |
431 | ret = config_parse_value(entry->value); | |
432 | if (ret <= 0) { | |
433 | if (ret) { | |
434 | WARN("Invalid configuration value \"%s\" for option %s", | |
435 | entry->value, entry->name); | |
436 | } | |
437 | /* False, skip boolean config option. */ | |
438 | goto end; | |
439 | } | |
440 | } | |
441 | ||
442 | ret = set_option(long_options[i].val, entry->value, entry->name); | |
443 | goto end; | |
444 | } | |
445 | ||
446 | WARN("Unrecognized option \"%s\" in daemon configuration file.", | |
447 | entry->name); | |
448 | ||
449 | end: | |
450 | return ret; | |
451 | } | |
452 | ||
2a10de3b JR |
453 | static int parse_env_options(void) |
454 | { | |
455 | int ret = 0; | |
456 | char *value = NULL; | |
457 | ||
458 | value = lttng_secure_getenv(DEFAULT_LTTNG_RELAYD_WORKING_DIRECTORY_ENV); | |
459 | if (value) { | |
460 | opt_working_directory = strdup(value); | |
461 | if (!opt_working_directory) { | |
462 | ERR("Failed to allocate working directory string (\"%s\")", | |
463 | value); | |
464 | ret = -1; | |
465 | } | |
466 | } | |
467 | return ret; | |
468 | } | |
469 | ||
5c0551f9 JG |
470 | static int set_fd_pool_size(void) |
471 | { | |
472 | int ret = 0; | |
473 | struct rlimit rlimit; | |
474 | ||
475 | ret = getrlimit(RLIMIT_NOFILE, &rlimit); | |
476 | if (ret) { | |
477 | PERROR("Failed to get file descriptor limit"); | |
478 | ret = -1; | |
479 | goto end; | |
480 | } | |
481 | ||
482 | DBG("File descriptor count limits are %" PRIu64 " (soft) and %" PRIu64 " (hard)", | |
483 | (uint64_t) rlimit.rlim_cur, | |
484 | (uint64_t) rlimit.rlim_max); | |
485 | if (lttng_opt_fd_pool_size == -1) { | |
486 | /* Use default value (soft limit - reserve). */ | |
487 | if (rlimit.rlim_cur < DEFAULT_RELAYD_MIN_FD_POOL_SIZE) { | |
488 | ERR("The process' file number limit is too low (%" PRIu64 "). The process' file number limit must be set to at least %i.", | |
489 | (uint64_t) rlimit.rlim_cur, DEFAULT_RELAYD_MIN_FD_POOL_SIZE); | |
490 | ret = -1; | |
491 | goto end; | |
492 | } | |
493 | lttng_opt_fd_pool_size = rlimit.rlim_cur - | |
494 | DEFAULT_RELAYD_FD_POOL_SIZE_RESERVE; | |
495 | goto end; | |
496 | } | |
497 | ||
498 | if (lttng_opt_fd_pool_size < DEFAULT_RELAYD_MIN_FD_POOL_SIZE) { | |
499 | ERR("File descriptor pool size must be set to at least %d", | |
500 | DEFAULT_RELAYD_MIN_FD_POOL_SIZE); | |
501 | ret = -1; | |
502 | goto end; | |
503 | } | |
504 | ||
505 | if (lttng_opt_fd_pool_size > rlimit.rlim_cur) { | |
506 | ERR("File descriptor pool size argument (%u) exceeds the process' soft limit (%" PRIu64 ").", | |
507 | lttng_opt_fd_pool_size, (uint64_t) rlimit.rlim_cur); | |
508 | ret = -1; | |
509 | goto end; | |
510 | } | |
511 | ||
d49487dc | 512 | DBG("File descriptor pool size argument (%u) adjusted to %u to accommodates transient fd uses", |
5c0551f9 JG |
513 | lttng_opt_fd_pool_size, |
514 | lttng_opt_fd_pool_size - DEFAULT_RELAYD_FD_POOL_SIZE_RESERVE); | |
515 | lttng_opt_fd_pool_size -= DEFAULT_RELAYD_FD_POOL_SIZE_RESERVE; | |
516 | end: | |
517 | return ret; | |
518 | } | |
519 | ||
7591bab1 | 520 | static int set_options(int argc, char **argv) |
cd60b05a | 521 | { |
178a0557 | 522 | int c, ret = 0, option_index = 0, retval = 0; |
cd60b05a JG |
523 | int orig_optopt = optopt, orig_optind = optind; |
524 | char *default_address, *optstring; | |
3a9e5d16 | 525 | char *config_path = NULL; |
cd60b05a JG |
526 | |
527 | optstring = utils_generate_optstring(long_options, | |
528 | sizeof(long_options) / sizeof(struct option)); | |
529 | if (!optstring) { | |
178a0557 | 530 | retval = -ENOMEM; |
cd60b05a JG |
531 | goto exit; |
532 | } | |
533 | ||
534 | /* Check for the --config option */ | |
535 | ||
536 | while ((c = getopt_long(argc, argv, optstring, long_options, | |
537 | &option_index)) != -1) { | |
538 | if (c == '?') { | |
178a0557 | 539 | retval = -EINVAL; |
cd60b05a JG |
540 | goto exit; |
541 | } else if (c != 'f') { | |
542 | continue; | |
543 | } | |
544 | ||
e8fa9fb0 MD |
545 | if (lttng_is_setuid_setgid()) { |
546 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
547 | "-f, --config"); | |
548 | } else { | |
3a9e5d16 | 549 | free(config_path); |
e8fa9fb0 MD |
550 | config_path = utils_expand_path(optarg); |
551 | if (!config_path) { | |
552 | ERR("Failed to resolve path: %s", optarg); | |
553 | } | |
cd60b05a JG |
554 | } |
555 | } | |
556 | ||
557 | ret = config_get_section_entries(config_path, config_section_name, | |
558 | config_entry_handler, NULL); | |
559 | if (ret) { | |
560 | if (ret > 0) { | |
561 | ERR("Invalid configuration option at line %i", ret); | |
cd60b05a | 562 | } |
178a0557 | 563 | retval = -1; |
cd60b05a JG |
564 | goto exit; |
565 | } | |
b8aa1682 | 566 | |
cd60b05a JG |
567 | /* Reset getopt's global state */ |
568 | optopt = orig_optopt; | |
569 | optind = orig_optind; | |
b8aa1682 | 570 | while (1) { |
cd60b05a | 571 | c = getopt_long(argc, argv, optstring, long_options, &option_index); |
b8aa1682 JD |
572 | if (c == -1) { |
573 | break; | |
574 | } | |
575 | ||
cd60b05a JG |
576 | ret = set_option(c, optarg, long_options[option_index].name); |
577 | if (ret < 0) { | |
178a0557 | 578 | retval = -1; |
b8aa1682 JD |
579 | goto exit; |
580 | } | |
581 | } | |
582 | ||
583 | /* assign default values */ | |
584 | if (control_uri == NULL) { | |
fa91dc52 MD |
585 | ret = asprintf(&default_address, |
586 | "tcp://" DEFAULT_NETWORK_CONTROL_BIND_ADDRESS ":%d", | |
587 | DEFAULT_NETWORK_CONTROL_PORT); | |
b8aa1682 JD |
588 | if (ret < 0) { |
589 | PERROR("asprintf default data address"); | |
178a0557 | 590 | retval = -1; |
b8aa1682 JD |
591 | goto exit; |
592 | } | |
593 | ||
594 | ret = uri_parse(default_address, &control_uri); | |
595 | free(default_address); | |
596 | if (ret < 0) { | |
597 | ERR("Invalid control URI specified"); | |
178a0557 | 598 | retval = -1; |
b8aa1682 JD |
599 | goto exit; |
600 | } | |
601 | } | |
602 | if (data_uri == NULL) { | |
fa91dc52 MD |
603 | ret = asprintf(&default_address, |
604 | "tcp://" DEFAULT_NETWORK_DATA_BIND_ADDRESS ":%d", | |
605 | DEFAULT_NETWORK_DATA_PORT); | |
b8aa1682 JD |
606 | if (ret < 0) { |
607 | PERROR("asprintf default data address"); | |
178a0557 | 608 | retval = -1; |
b8aa1682 JD |
609 | goto exit; |
610 | } | |
611 | ||
612 | ret = uri_parse(default_address, &data_uri); | |
613 | free(default_address); | |
614 | if (ret < 0) { | |
615 | ERR("Invalid data URI specified"); | |
178a0557 | 616 | retval = -1; |
b8aa1682 JD |
617 | goto exit; |
618 | } | |
619 | } | |
d3e2ba59 | 620 | if (live_uri == NULL) { |
fa91dc52 MD |
621 | ret = asprintf(&default_address, |
622 | "tcp://" DEFAULT_NETWORK_VIEWER_BIND_ADDRESS ":%d", | |
623 | DEFAULT_NETWORK_VIEWER_PORT); | |
d3e2ba59 JD |
624 | if (ret < 0) { |
625 | PERROR("asprintf default viewer control address"); | |
178a0557 | 626 | retval = -1; |
d3e2ba59 JD |
627 | goto exit; |
628 | } | |
629 | ||
630 | ret = uri_parse(default_address, &live_uri); | |
631 | free(default_address); | |
632 | if (ret < 0) { | |
633 | ERR("Invalid viewer control URI specified"); | |
178a0557 | 634 | retval = -1; |
d3e2ba59 JD |
635 | goto exit; |
636 | } | |
637 | } | |
5c0551f9 JG |
638 | ret = set_fd_pool_size(); |
639 | if (ret) { | |
640 | retval = -1; | |
641 | goto exit; | |
896010e3 | 642 | } |
b8aa1682 | 643 | |
a8b66566 JR |
644 | if (opt_group_output_by == RELAYD_GROUP_OUTPUT_BY_UNKNOWN) { |
645 | opt_group_output_by = RELAYD_GROUP_OUTPUT_BY_HOST; | |
646 | } | |
35ab25e5 MD |
647 | if (opt_allow_clear) { |
648 | /* Check if env variable exists. */ | |
649 | const char *value = lttng_secure_getenv(DEFAULT_LTTNG_RELAYD_DISALLOW_CLEAR_ENV); | |
650 | if (value) { | |
651 | ret = config_parse_value(value); | |
652 | if (ret < 0) { | |
653 | ERR("Invalid value for %s specified", DEFAULT_LTTNG_RELAYD_DISALLOW_CLEAR_ENV); | |
654 | retval = -1; | |
655 | goto exit; | |
656 | } | |
657 | opt_allow_clear = !ret; | |
658 | } | |
659 | } | |
a8b66566 | 660 | |
b8aa1682 | 661 | exit: |
3a9e5d16 | 662 | free(config_path); |
cd60b05a | 663 | free(optstring); |
178a0557 | 664 | return retval; |
b8aa1682 JD |
665 | } |
666 | ||
7591bab1 MD |
667 | static void print_global_objects(void) |
668 | { | |
7591bab1 MD |
669 | print_viewer_streams(); |
670 | print_relay_streams(); | |
671 | print_sessions(); | |
7591bab1 MD |
672 | } |
673 | ||
f46376a1 MJ |
674 | static int noop_close(void *data __attribute__((unused)), |
675 | int *fds __attribute__((unused))) | |
5c0551f9 JG |
676 | { |
677 | return 0; | |
678 | } | |
679 | ||
680 | static void untrack_stdio(void) | |
681 | { | |
682 | int fds[] = { fileno(stdout), fileno(stderr) }; | |
683 | ||
684 | /* | |
685 | * noop_close is used since we don't really want to close | |
686 | * the stdio output fds; we merely want to stop tracking them. | |
687 | */ | |
688 | (void) fd_tracker_close_unsuspendable_fd(the_fd_tracker, | |
689 | fds, 2, noop_close, NULL); | |
690 | } | |
691 | ||
b8aa1682 JD |
692 | /* |
693 | * Cleanup the daemon | |
694 | */ | |
7591bab1 | 695 | static void relayd_cleanup(void) |
b8aa1682 | 696 | { |
7591bab1 MD |
697 | print_global_objects(); |
698 | ||
b8aa1682 JD |
699 | DBG("Cleaning up"); |
700 | ||
178a0557 MD |
701 | if (viewer_streams_ht) |
702 | lttng_ht_destroy(viewer_streams_ht); | |
703 | if (relay_streams_ht) | |
704 | lttng_ht_destroy(relay_streams_ht); | |
7591bab1 MD |
705 | if (sessions_ht) |
706 | lttng_ht_destroy(sessions_ht); | |
178a0557 | 707 | |
095a4ae5 | 708 | free(opt_output_path); |
ce9ee1fb | 709 | free(opt_working_directory); |
095a4ae5 | 710 | |
794e2e5f JG |
711 | if (health_relayd) { |
712 | health_app_destroy(health_relayd); | |
713 | } | |
a02de639 | 714 | /* Close thread quit pipes */ |
bcee2b96 JG |
715 | if (health_quit_pipe[0] != -1) { |
716 | (void) fd_tracker_util_pipe_close( | |
717 | the_fd_tracker, health_quit_pipe); | |
718 | } | |
8a00688e | 719 | relayd_close_thread_quit_pipe(); |
794e2e5f JG |
720 | if (sessiond_trace_chunk_registry) { |
721 | sessiond_trace_chunk_registry_destroy( | |
722 | sessiond_trace_chunk_registry); | |
723 | } | |
00e3b7f1 | 724 | if (the_fd_tracker) { |
9c256b01 JG |
725 | untrack_stdio(); |
726 | /* | |
727 | * fd_tracker_destroy() will log the contents of the fd-tracker | |
728 | * if a leak is detected. | |
729 | */ | |
00e3b7f1 JG |
730 | fd_tracker_destroy(the_fd_tracker); |
731 | } | |
794e2e5f | 732 | |
710c1f73 DG |
733 | uri_free(control_uri); |
734 | uri_free(data_uri); | |
8d5c808e | 735 | /* Live URI is freed in the live thread. */ |
cd60b05a JG |
736 | |
737 | if (tracing_group_name_override) { | |
738 | free((void *) tracing_group_name); | |
739 | } | |
b8aa1682 JD |
740 | } |
741 | ||
7591bab1 | 742 | static int notify_health_quit_pipe(int *pipe) |
65931c8b | 743 | { |
6cd525e8 | 744 | ssize_t ret; |
65931c8b | 745 | |
6cd525e8 MD |
746 | ret = lttng_write(pipe[1], "4", 1); |
747 | if (ret < 1) { | |
65931c8b | 748 | PERROR("write relay health quit"); |
b4aacfdc | 749 | goto end; |
65931c8b | 750 | } |
b4aacfdc MD |
751 | ret = 0; |
752 | end: | |
753 | return ret; | |
65931c8b MD |
754 | } |
755 | ||
b8aa1682 | 756 | /* |
b4aacfdc | 757 | * Stop all relayd and relayd-live threads. |
b8aa1682 | 758 | */ |
b4aacfdc | 759 | int lttng_relay_stop_threads(void) |
b8aa1682 | 760 | { |
b4aacfdc | 761 | int retval = 0; |
b8aa1682 JD |
762 | |
763 | /* Stopping all threads */ | |
764 | DBG("Terminating all threads"); | |
8a00688e | 765 | if (relayd_notify_thread_quit_pipe()) { |
b8aa1682 | 766 | ERR("write error on thread quit pipe"); |
b4aacfdc | 767 | retval = -1; |
b8aa1682 JD |
768 | } |
769 | ||
b4aacfdc MD |
770 | if (notify_health_quit_pipe(health_quit_pipe)) { |
771 | ERR("write error on health quit pipe"); | |
772 | } | |
65931c8b | 773 | |
b8aa1682 | 774 | /* Dispatch thread */ |
26c9d55e | 775 | CMM_STORE_SHARED(dispatch_thread_exit, 1); |
58eb9381 | 776 | futex_nto1_wake(&relay_conn_queue.futex); |
178a0557 | 777 | |
b4aacfdc | 778 | if (relayd_live_stop()) { |
178a0557 | 779 | ERR("Error stopping live threads"); |
b4aacfdc | 780 | retval = -1; |
178a0557 | 781 | } |
b4aacfdc | 782 | return retval; |
b8aa1682 JD |
783 | } |
784 | ||
785 | /* | |
786 | * Signal handler for the daemon | |
787 | * | |
788 | * Simply stop all worker threads, leaving main() return gracefully after | |
789 | * joining all threads and calling cleanup(). | |
790 | */ | |
7591bab1 | 791 | static void sighandler(int sig) |
b8aa1682 JD |
792 | { |
793 | switch (sig) { | |
b8aa1682 JD |
794 | case SIGINT: |
795 | DBG("SIGINT caught"); | |
b4aacfdc MD |
796 | if (lttng_relay_stop_threads()) { |
797 | ERR("Error stopping threads"); | |
798 | } | |
b8aa1682 JD |
799 | break; |
800 | case SIGTERM: | |
801 | DBG("SIGTERM caught"); | |
b4aacfdc MD |
802 | if (lttng_relay_stop_threads()) { |
803 | ERR("Error stopping threads"); | |
804 | } | |
b8aa1682 | 805 | break; |
3fd27398 MD |
806 | case SIGUSR1: |
807 | CMM_STORE_SHARED(recv_child_signal, 1); | |
808 | break; | |
b8aa1682 JD |
809 | default: |
810 | break; | |
811 | } | |
812 | } | |
813 | ||
814 | /* | |
815 | * Setup signal handler for : | |
816 | * SIGINT, SIGTERM, SIGPIPE | |
817 | */ | |
7591bab1 | 818 | static int set_signal_handler(void) |
b8aa1682 JD |
819 | { |
820 | int ret = 0; | |
821 | struct sigaction sa; | |
822 | sigset_t sigset; | |
823 | ||
824 | if ((ret = sigemptyset(&sigset)) < 0) { | |
825 | PERROR("sigemptyset"); | |
826 | return ret; | |
827 | } | |
828 | ||
b8aa1682 JD |
829 | sa.sa_mask = sigset; |
830 | sa.sa_flags = 0; | |
0072e5e2 MD |
831 | |
832 | sa.sa_handler = sighandler; | |
b8aa1682 JD |
833 | if ((ret = sigaction(SIGTERM, &sa, NULL)) < 0) { |
834 | PERROR("sigaction"); | |
835 | return ret; | |
836 | } | |
837 | ||
838 | if ((ret = sigaction(SIGINT, &sa, NULL)) < 0) { | |
839 | PERROR("sigaction"); | |
840 | return ret; | |
841 | } | |
842 | ||
0072e5e2 | 843 | if ((ret = sigaction(SIGUSR1, &sa, NULL)) < 0) { |
b8aa1682 JD |
844 | PERROR("sigaction"); |
845 | return ret; | |
846 | } | |
847 | ||
0072e5e2 MD |
848 | sa.sa_handler = SIG_IGN; |
849 | if ((ret = sigaction(SIGPIPE, &sa, NULL)) < 0) { | |
3fd27398 MD |
850 | PERROR("sigaction"); |
851 | return ret; | |
852 | } | |
853 | ||
854 | DBG("Signal handler set for SIGTERM, SIGUSR1, SIGPIPE and SIGINT"); | |
b8aa1682 JD |
855 | |
856 | return ret; | |
857 | } | |
858 | ||
3fd27398 MD |
859 | void lttng_relay_notify_ready(void) |
860 | { | |
861 | /* Notify the parent of the fork() process that we are ready. */ | |
862 | if (opt_daemon || opt_background) { | |
863 | if (uatomic_sub_return(<tng_relay_ready, 1) == 0) { | |
864 | kill(child_ppid, SIGUSR1); | |
865 | } | |
866 | } | |
867 | } | |
868 | ||
bcee2b96 JG |
869 | /* |
870 | * Init health quit pipe. | |
871 | * | |
872 | * Return -1 on error or 0 if all pipes are created. | |
873 | */ | |
874 | static int init_health_quit_pipe(void) | |
875 | { | |
876 | return fd_tracker_util_pipe_open_cloexec(the_fd_tracker, | |
877 | "Health quit pipe", health_quit_pipe); | |
878 | } | |
879 | ||
40212d87 JG |
880 | static int create_sock(void *data, int *out_fd) |
881 | { | |
882 | int ret; | |
ac497a37 | 883 | struct lttcomm_sock *sock = (lttcomm_sock *) data; |
40212d87 JG |
884 | |
885 | ret = lttcomm_create_sock(sock); | |
886 | if (ret < 0) { | |
887 | goto end; | |
888 | } | |
889 | ||
890 | *out_fd = sock->fd; | |
891 | end: | |
892 | return ret; | |
893 | } | |
894 | ||
f46376a1 | 895 | static int close_sock(void *data, int *in_fd __attribute__((unused))) |
40212d87 | 896 | { |
ac497a37 | 897 | struct lttcomm_sock *sock = (lttcomm_sock *) data; |
40212d87 JG |
898 | |
899 | return sock->ops->close(sock); | |
900 | } | |
901 | ||
f355467e JG |
902 | static int accept_sock(void *data, int *out_fd) |
903 | { | |
904 | int ret = 0; | |
905 | /* Socks is an array of in_sock, out_sock. */ | |
ac497a37 | 906 | struct lttcomm_sock **socks = (lttcomm_sock **) data; |
f355467e JG |
907 | struct lttcomm_sock *in_sock = socks[0]; |
908 | ||
f118099a | 909 | socks[1] = in_sock->ops->accept(in_sock); |
f355467e JG |
910 | if (!socks[1]) { |
911 | ret = -1; | |
912 | goto end; | |
913 | } | |
914 | *out_fd = socks[1]->fd; | |
915 | end: | |
916 | return ret; | |
917 | } | |
918 | ||
b8aa1682 JD |
919 | /* |
920 | * Create and init socket from uri. | |
921 | */ | |
40212d87 JG |
922 | static struct lttcomm_sock *relay_socket_create(struct lttng_uri *uri, |
923 | const char *name) | |
b8aa1682 | 924 | { |
40212d87 | 925 | int ret, sock_fd; |
b8aa1682 | 926 | struct lttcomm_sock *sock = NULL; |
40212d87 JG |
927 | char uri_str[PATH_MAX]; |
928 | char *formated_name = NULL; | |
b8aa1682 JD |
929 | |
930 | sock = lttcomm_alloc_sock_from_uri(uri); | |
931 | if (sock == NULL) { | |
932 | ERR("Allocating socket"); | |
933 | goto error; | |
934 | } | |
935 | ||
40212d87 JG |
936 | /* |
937 | * Don't fail to create the socket if the name can't be built as it is | |
938 | * only used for debugging purposes. | |
939 | */ | |
940 | ret = uri_to_str_url(uri, uri_str, sizeof(uri_str)); | |
941 | uri_str[sizeof(uri_str) - 1] = '\0'; | |
942 | if (ret >= 0) { | |
943 | ret = asprintf(&formated_name, "%s socket @ %s", name, | |
944 | uri_str); | |
945 | if (ret < 0) { | |
946 | formated_name = NULL; | |
947 | } | |
b8aa1682 | 948 | } |
40212d87 JG |
949 | |
950 | ret = fd_tracker_open_unsuspendable_fd(the_fd_tracker, &sock_fd, | |
951 | (const char **) (formated_name ? &formated_name : NULL), | |
952 | 1, create_sock, sock); | |
6016eb62 JG |
953 | if (ret) { |
954 | PERROR("Failed to open \"%s\" relay socket", | |
955 | formated_name ?: "Unknown"); | |
956 | goto error; | |
957 | } | |
40212d87 | 958 | DBG("Listening on %s socket %d", name, sock->fd); |
b8aa1682 JD |
959 | |
960 | ret = sock->ops->bind(sock); | |
961 | if (ret < 0) { | |
2288467f | 962 | PERROR("Failed to bind socket"); |
b8aa1682 JD |
963 | goto error; |
964 | } | |
965 | ||
966 | ret = sock->ops->listen(sock, -1); | |
967 | if (ret < 0) { | |
968 | goto error; | |
969 | ||
970 | } | |
971 | ||
6016eb62 | 972 | free(formated_name); |
b8aa1682 JD |
973 | return sock; |
974 | ||
975 | error: | |
976 | if (sock) { | |
977 | lttcomm_destroy_sock(sock); | |
978 | } | |
6016eb62 | 979 | free(formated_name); |
b8aa1682 JD |
980 | return NULL; |
981 | } | |
982 | ||
f355467e JG |
983 | static |
984 | struct lttcomm_sock *accept_relayd_sock(struct lttcomm_sock *listening_sock, | |
985 | const char *name) | |
986 | { | |
987 | int out_fd, ret; | |
988 | struct lttcomm_sock *socks[2] = { listening_sock, NULL }; | |
989 | struct lttcomm_sock *new_sock = NULL; | |
990 | ||
f118099a | 991 | ret = fd_tracker_open_unsuspendable_fd( |
f355467e JG |
992 | the_fd_tracker, &out_fd, |
993 | (const char **) &name, | |
994 | 1, accept_sock, &socks); | |
995 | if (ret) { | |
996 | goto end; | |
997 | } | |
998 | new_sock = socks[1]; | |
999 | DBG("%s accepted, socket %d", name, new_sock->fd); | |
1000 | end: | |
1001 | return new_sock; | |
1002 | } | |
1003 | ||
b8aa1682 JD |
1004 | /* |
1005 | * This thread manages the listening for new connections on the network | |
1006 | */ | |
f46376a1 | 1007 | static void *relay_thread_listener(void *data __attribute__((unused))) |
b8aa1682 | 1008 | { |
8a00688e MJ |
1009 | int i, ret, err = -1; |
1010 | uint32_t nb_fd; | |
b8aa1682 JD |
1011 | struct lttng_poll_event events; |
1012 | struct lttcomm_sock *control_sock, *data_sock; | |
1013 | ||
b8aa1682 JD |
1014 | DBG("[thread] Relay listener started"); |
1015 | ||
8fba2b8d | 1016 | rcu_register_thread(); |
55706a7d MD |
1017 | health_register(health_relayd, HEALTH_RELAYD_TYPE_LISTENER); |
1018 | ||
f385ae0a MD |
1019 | health_code_update(); |
1020 | ||
40212d87 | 1021 | control_sock = relay_socket_create(control_uri, "Control listener"); |
b8aa1682 | 1022 | if (!control_sock) { |
095a4ae5 | 1023 | goto error_sock_control; |
b8aa1682 JD |
1024 | } |
1025 | ||
40212d87 | 1026 | data_sock = relay_socket_create(data_uri, "Data listener"); |
b8aa1682 | 1027 | if (!data_sock) { |
095a4ae5 | 1028 | goto error_sock_relay; |
b8aa1682 JD |
1029 | } |
1030 | ||
1031 | /* | |
7591bab1 MD |
1032 | * Pass 3 as size here for the thread quit pipe, control and |
1033 | * data socket. | |
b8aa1682 | 1034 | */ |
ba9cf8e1 | 1035 | ret = create_named_thread_poll_set(&events, 3, "Listener thread epoll"); |
b8aa1682 JD |
1036 | if (ret < 0) { |
1037 | goto error_create_poll; | |
1038 | } | |
1039 | ||
1040 | /* Add the control socket */ | |
1041 | ret = lttng_poll_add(&events, control_sock->fd, LPOLLIN | LPOLLRDHUP); | |
1042 | if (ret < 0) { | |
1043 | goto error_poll_add; | |
1044 | } | |
1045 | ||
1046 | /* Add the data socket */ | |
1047 | ret = lttng_poll_add(&events, data_sock->fd, LPOLLIN | LPOLLRDHUP); | |
1048 | if (ret < 0) { | |
1049 | goto error_poll_add; | |
1050 | } | |
1051 | ||
3fd27398 MD |
1052 | lttng_relay_notify_ready(); |
1053 | ||
9b5e0863 MD |
1054 | if (testpoint(relayd_thread_listener)) { |
1055 | goto error_testpoint; | |
1056 | } | |
1057 | ||
b8aa1682 | 1058 | while (1) { |
f385ae0a MD |
1059 | health_code_update(); |
1060 | ||
b8aa1682 JD |
1061 | DBG("Listener accepting connections"); |
1062 | ||
b8aa1682 | 1063 | restart: |
f385ae0a | 1064 | health_poll_entry(); |
b8aa1682 | 1065 | ret = lttng_poll_wait(&events, -1); |
f385ae0a | 1066 | health_poll_exit(); |
b8aa1682 JD |
1067 | if (ret < 0) { |
1068 | /* | |
1069 | * Restart interrupted system call. | |
1070 | */ | |
1071 | if (errno == EINTR) { | |
1072 | goto restart; | |
1073 | } | |
1074 | goto error; | |
1075 | } | |
1076 | ||
0d9c5d77 DG |
1077 | nb_fd = ret; |
1078 | ||
b8aa1682 JD |
1079 | DBG("Relay new connection received"); |
1080 | for (i = 0; i < nb_fd; i++) { | |
1081 | /* Fetch once the poll data */ | |
8a00688e MJ |
1082 | const auto revents = LTTNG_POLL_GETEV(&events, i); |
1083 | const auto pollfd = LTTNG_POLL_GETFD(&events, i); | |
b8aa1682 | 1084 | |
8a00688e MJ |
1085 | health_code_update(); |
1086 | ||
1087 | /* Activity on thread quit pipe, exiting. */ | |
1088 | if (relayd_is_thread_quit_pipe(pollfd)) { | |
1089 | DBG("Activity on thread quit pipe"); | |
095a4ae5 MD |
1090 | err = 0; |
1091 | goto exit; | |
b8aa1682 JD |
1092 | } |
1093 | ||
03e43155 | 1094 | if (revents & LPOLLIN) { |
4b7f17b2 | 1095 | /* |
7591bab1 MD |
1096 | * A new connection is requested, therefore a |
1097 | * sessiond/consumerd connection is allocated in | |
1098 | * this thread, enqueued to a global queue and | |
1099 | * dequeued (and freed) in the worker thread. | |
4b7f17b2 | 1100 | */ |
58eb9381 DG |
1101 | int val = 1; |
1102 | struct relay_connection *new_conn; | |
f355467e | 1103 | struct lttcomm_sock *newsock = NULL; |
7591bab1 | 1104 | enum connection_type type; |
b8aa1682 JD |
1105 | |
1106 | if (pollfd == data_sock->fd) { | |
7591bab1 | 1107 | type = RELAY_DATA; |
f355467e JG |
1108 | newsock = accept_relayd_sock(data_sock, |
1109 | "Data socket to relayd"); | |
4b7f17b2 | 1110 | } else { |
a0377dfe | 1111 | LTTNG_ASSERT(pollfd == control_sock->fd); |
7591bab1 | 1112 | type = RELAY_CONTROL; |
875e3164 JG |
1113 | newsock = accept_relayd_sock(control_sock, |
1114 | "Control socket to relayd"); | |
b8aa1682 | 1115 | } |
58eb9381 DG |
1116 | if (!newsock) { |
1117 | PERROR("accepting sock"); | |
58eb9381 DG |
1118 | goto error; |
1119 | } | |
1120 | ||
1121 | ret = setsockopt(newsock->fd, SOL_SOCKET, SO_REUSEADDR, &val, | |
1122 | sizeof(val)); | |
b8aa1682 JD |
1123 | if (ret < 0) { |
1124 | PERROR("setsockopt inet"); | |
4b7f17b2 | 1125 | lttcomm_destroy_sock(newsock); |
b8aa1682 JD |
1126 | goto error; |
1127 | } | |
f056029c JR |
1128 | |
1129 | ret = socket_apply_keep_alive_config(newsock->fd); | |
1130 | if (ret < 0) { | |
1131 | ERR("Failed to apply TCP keep-alive configuration on socket (%i)", | |
1132 | newsock->fd); | |
1133 | lttcomm_destroy_sock(newsock); | |
1134 | goto error; | |
1135 | } | |
1136 | ||
7591bab1 MD |
1137 | new_conn = connection_create(newsock, type); |
1138 | if (!new_conn) { | |
1139 | lttcomm_destroy_sock(newsock); | |
1140 | goto error; | |
1141 | } | |
58eb9381 DG |
1142 | |
1143 | /* Enqueue request for the dispatcher thread. */ | |
ac497a37 SM |
1144 | cds_wfcq_head_ptr_t head; |
1145 | head.h = &relay_conn_queue.head; | |
1146 | cds_wfcq_enqueue(head, &relay_conn_queue.tail, | |
8bdee6e2 | 1147 | &new_conn->qnode); |
b8aa1682 JD |
1148 | |
1149 | /* | |
7591bab1 MD |
1150 | * Wake the dispatch queue futex. |
1151 | * Implicit memory barrier with the | |
1152 | * exchange in cds_wfcq_enqueue. | |
b8aa1682 | 1153 | */ |
58eb9381 | 1154 | futex_nto1_wake(&relay_conn_queue.futex); |
03e43155 MD |
1155 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
1156 | ERR("socket poll error"); | |
1157 | goto error; | |
1158 | } else { | |
1159 | ERR("Unexpected poll events %u for sock %d", revents, pollfd); | |
1160 | goto error; | |
b8aa1682 JD |
1161 | } |
1162 | } | |
1163 | } | |
1164 | ||
095a4ae5 | 1165 | exit: |
b8aa1682 JD |
1166 | error: |
1167 | error_poll_add: | |
9b5e0863 | 1168 | error_testpoint: |
ba9cf8e1 | 1169 | (void) fd_tracker_util_poll_clean(the_fd_tracker, &events); |
b8aa1682 | 1170 | error_create_poll: |
095a4ae5 | 1171 | if (data_sock->fd >= 0) { |
40212d87 JG |
1172 | int data_sock_fd = data_sock->fd; |
1173 | ||
1174 | ret = fd_tracker_close_unsuspendable_fd(the_fd_tracker, | |
1175 | &data_sock_fd, 1, close_sock, | |
1176 | data_sock); | |
b8aa1682 | 1177 | if (ret) { |
40212d87 | 1178 | PERROR("Failed to close the data listener socket file descriptor"); |
b8aa1682 | 1179 | } |
40212d87 | 1180 | data_sock->fd = -1; |
b8aa1682 | 1181 | } |
095a4ae5 MD |
1182 | lttcomm_destroy_sock(data_sock); |
1183 | error_sock_relay: | |
1184 | if (control_sock->fd >= 0) { | |
40212d87 JG |
1185 | int control_sock_fd = control_sock->fd; |
1186 | ||
1187 | ret = fd_tracker_close_unsuspendable_fd(the_fd_tracker, | |
1188 | &control_sock_fd, 1, close_sock, | |
1189 | control_sock); | |
b8aa1682 | 1190 | if (ret) { |
40212d87 | 1191 | PERROR("Failed to close the control listener socket file descriptor"); |
b8aa1682 | 1192 | } |
40212d87 | 1193 | control_sock->fd = -1; |
b8aa1682 | 1194 | } |
095a4ae5 MD |
1195 | lttcomm_destroy_sock(control_sock); |
1196 | error_sock_control: | |
1197 | if (err) { | |
f385ae0a MD |
1198 | health_error(); |
1199 | ERR("Health error occurred in %s", __func__); | |
095a4ae5 | 1200 | } |
55706a7d | 1201 | health_unregister(health_relayd); |
8fba2b8d | 1202 | rcu_unregister_thread(); |
b8aa1682 | 1203 | DBG("Relay listener thread cleanup complete"); |
b4aacfdc | 1204 | lttng_relay_stop_threads(); |
b8aa1682 JD |
1205 | return NULL; |
1206 | } | |
1207 | ||
1208 | /* | |
1209 | * This thread manages the dispatching of the requests to worker threads | |
1210 | */ | |
f46376a1 | 1211 | static void *relay_thread_dispatcher(void *data __attribute__((unused))) |
b8aa1682 | 1212 | { |
6cd525e8 MD |
1213 | int err = -1; |
1214 | ssize_t ret; | |
8bdee6e2 | 1215 | struct cds_wfcq_node *node; |
58eb9381 | 1216 | struct relay_connection *new_conn = NULL; |
b8aa1682 JD |
1217 | |
1218 | DBG("[thread] Relay dispatcher started"); | |
1219 | ||
55706a7d MD |
1220 | health_register(health_relayd, HEALTH_RELAYD_TYPE_DISPATCHER); |
1221 | ||
9b5e0863 MD |
1222 | if (testpoint(relayd_thread_dispatcher)) { |
1223 | goto error_testpoint; | |
1224 | } | |
1225 | ||
f385ae0a MD |
1226 | health_code_update(); |
1227 | ||
0ed3b1a8 | 1228 | for (;;) { |
f385ae0a MD |
1229 | health_code_update(); |
1230 | ||
b8aa1682 | 1231 | /* Atomically prepare the queue futex */ |
58eb9381 | 1232 | futex_nto1_prepare(&relay_conn_queue.futex); |
b8aa1682 | 1233 | |
0ed3b1a8 MD |
1234 | if (CMM_LOAD_SHARED(dispatch_thread_exit)) { |
1235 | break; | |
1236 | } | |
1237 | ||
b8aa1682 | 1238 | do { |
f385ae0a MD |
1239 | health_code_update(); |
1240 | ||
b8aa1682 | 1241 | /* Dequeue commands */ |
8bdee6e2 SM |
1242 | node = cds_wfcq_dequeue_blocking(&relay_conn_queue.head, |
1243 | &relay_conn_queue.tail); | |
b8aa1682 JD |
1244 | if (node == NULL) { |
1245 | DBG("Woken up but nothing in the relay command queue"); | |
1246 | /* Continue thread execution */ | |
1247 | break; | |
1248 | } | |
0114db0e | 1249 | new_conn = lttng::utils::container_of(node, &relay_connection::qnode); |
b8aa1682 | 1250 | |
58eb9381 | 1251 | DBG("Dispatching request waiting on sock %d", new_conn->sock->fd); |
b8aa1682 JD |
1252 | |
1253 | /* | |
7591bab1 MD |
1254 | * Inform worker thread of the new request. This |
1255 | * call is blocking so we can be assured that | |
1256 | * the data will be read at some point in time | |
1257 | * or wait to the end of the world :) | |
b8aa1682 | 1258 | */ |
58eb9381 DG |
1259 | ret = lttng_write(relay_conn_pipe[1], &new_conn, sizeof(new_conn)); |
1260 | if (ret < 0) { | |
1261 | PERROR("write connection pipe"); | |
7591bab1 | 1262 | connection_put(new_conn); |
b8aa1682 JD |
1263 | goto error; |
1264 | } | |
1265 | } while (node != NULL); | |
1266 | ||
1267 | /* Futex wait on queue. Blocking call on futex() */ | |
f385ae0a | 1268 | health_poll_entry(); |
58eb9381 | 1269 | futex_nto1_wait(&relay_conn_queue.futex); |
f385ae0a | 1270 | health_poll_exit(); |
b8aa1682 JD |
1271 | } |
1272 | ||
f385ae0a MD |
1273 | /* Normal exit, no error */ |
1274 | err = 0; | |
1275 | ||
b8aa1682 | 1276 | error: |
9b5e0863 | 1277 | error_testpoint: |
f385ae0a MD |
1278 | if (err) { |
1279 | health_error(); | |
1280 | ERR("Health error occurred in %s", __func__); | |
1281 | } | |
55706a7d | 1282 | health_unregister(health_relayd); |
b8aa1682 | 1283 | DBG("Dispatch thread dying"); |
b4aacfdc | 1284 | lttng_relay_stop_threads(); |
b8aa1682 JD |
1285 | return NULL; |
1286 | } | |
1287 | ||
298a25ca JG |
1288 | static bool session_streams_have_index(const struct relay_session *session) |
1289 | { | |
1290 | return session->minor >= 4 && !session->snapshot; | |
1291 | } | |
1292 | ||
c5b6f4f0 DG |
1293 | /* |
1294 | * Handle the RELAYD_CREATE_SESSION command. | |
1295 | * | |
1296 | * On success, send back the session id or else return a negative value. | |
1297 | */ | |
f46376a1 MJ |
1298 | static int relay_create_session( |
1299 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
5312a3ed JG |
1300 | struct relay_connection *conn, |
1301 | const struct lttng_buffer_view *payload) | |
c5b6f4f0 | 1302 | { |
5312a3ed JG |
1303 | int ret = 0; |
1304 | ssize_t send_ret; | |
4c6885d2 | 1305 | struct relay_session *session = NULL; |
ecd1a12f | 1306 | struct lttcomm_relayd_create_session_reply_2_11 reply = {}; |
1e791a74 JG |
1307 | char session_name[LTTNG_NAME_MAX] = {}; |
1308 | char hostname[LTTNG_HOST_NAME_MAX] = {}; | |
7591bab1 MD |
1309 | uint32_t live_timer = 0; |
1310 | bool snapshot = false; | |
46ef2188 | 1311 | bool session_name_contains_creation_timestamp = false; |
23c8ff50 | 1312 | /* Left nil for peers < 2.11. */ |
6fa5fe7c | 1313 | char base_path[LTTNG_PATH_MAX] = {}; |
23c8ff50 | 1314 | lttng_uuid sessiond_uuid = {}; |
1e791a74 JG |
1315 | LTTNG_OPTIONAL(uint64_t) id_sessiond = {}; |
1316 | LTTNG_OPTIONAL(uint64_t) current_chunk_id = {}; | |
db1da059 | 1317 | LTTNG_OPTIONAL(time_t) creation_time = {}; |
ecd1a12f MD |
1318 | struct lttng_dynamic_buffer reply_payload; |
1319 | ||
1320 | lttng_dynamic_buffer_init(&reply_payload); | |
c5b6f4f0 | 1321 | |
f86f6389 JR |
1322 | if (conn->minor < 4) { |
1323 | /* From 2.1 to 2.3 */ | |
1324 | ret = 0; | |
1325 | } else if (conn->minor >= 4 && conn->minor < 11) { | |
1326 | /* From 2.4 to 2.10 */ | |
5312a3ed | 1327 | ret = cmd_create_session_2_4(payload, session_name, |
7591bab1 | 1328 | hostname, &live_timer, &snapshot); |
f86f6389 | 1329 | } else { |
84fa4db5 | 1330 | bool has_current_chunk; |
db1da059 JG |
1331 | uint64_t current_chunk_id_value; |
1332 | time_t creation_time_value; | |
1333 | uint64_t id_sessiond_value; | |
84fa4db5 | 1334 | |
f86f6389 | 1335 | /* From 2.11 to ... */ |
db1da059 | 1336 | ret = cmd_create_session_2_11(payload, session_name, hostname, |
6fa5fe7c | 1337 | base_path, &live_timer, &snapshot, &id_sessiond_value, |
db1da059 | 1338 | sessiond_uuid, &has_current_chunk, |
46ef2188 MD |
1339 | ¤t_chunk_id_value, &creation_time_value, |
1340 | &session_name_contains_creation_timestamp); | |
23c8ff50 JG |
1341 | if (lttng_uuid_is_nil(sessiond_uuid)) { |
1342 | /* The nil UUID is reserved for pre-2.11 clients. */ | |
1343 | ERR("Illegal nil UUID announced by peer in create session command"); | |
1344 | ret = -1; | |
1345 | goto send_reply; | |
1346 | } | |
db1da059 JG |
1347 | LTTNG_OPTIONAL_SET(&id_sessiond, id_sessiond_value); |
1348 | LTTNG_OPTIONAL_SET(&creation_time, creation_time_value); | |
1349 | if (has_current_chunk) { | |
1350 | LTTNG_OPTIONAL_SET(¤t_chunk_id, | |
1351 | current_chunk_id_value); | |
1352 | } | |
7591bab1 | 1353 | } |
f86f6389 | 1354 | |
7591bab1 MD |
1355 | if (ret < 0) { |
1356 | goto send_reply; | |
d3e2ba59 JD |
1357 | } |
1358 | ||
6fa5fe7c | 1359 | session = session_create(session_name, hostname, base_path, live_timer, |
1e791a74 JG |
1360 | snapshot, sessiond_uuid, |
1361 | id_sessiond.is_set ? &id_sessiond.value : NULL, | |
1362 | current_chunk_id.is_set ? ¤t_chunk_id.value : NULL, | |
db1da059 | 1363 | creation_time.is_set ? &creation_time.value : NULL, |
46ef2188 MD |
1364 | conn->major, conn->minor, |
1365 | session_name_contains_creation_timestamp); | |
7591bab1 MD |
1366 | if (!session) { |
1367 | ret = -1; | |
1368 | goto send_reply; | |
1369 | } | |
a0377dfe | 1370 | LTTNG_ASSERT(!conn->session); |
7591bab1 | 1371 | conn->session = session; |
c5b6f4f0 DG |
1372 | DBG("Created session %" PRIu64, session->id); |
1373 | ||
ecd1a12f | 1374 | reply.generic.session_id = htobe64(session->id); |
7591bab1 MD |
1375 | |
1376 | send_reply: | |
c5b6f4f0 | 1377 | if (ret < 0) { |
ecd1a12f | 1378 | reply.generic.ret_code = htobe32(LTTNG_ERR_FATAL); |
c5b6f4f0 | 1379 | } else { |
ecd1a12f | 1380 | reply.generic.ret_code = htobe32(LTTNG_OK); |
c5b6f4f0 DG |
1381 | } |
1382 | ||
ecd1a12f MD |
1383 | if (conn->minor < 11) { |
1384 | /* From 2.1 to 2.10 */ | |
1385 | ret = lttng_dynamic_buffer_append(&reply_payload, | |
1386 | &reply.generic, sizeof(reply.generic)); | |
1387 | if (ret) { | |
1388 | ERR("Failed to append \"create session\" command reply header to payload buffer"); | |
1389 | ret = -1; | |
1390 | goto end; | |
1391 | } | |
1392 | } else { | |
1393 | const uint32_t output_path_length = | |
8d382dd4 | 1394 | session ? strlen(session->output_path) + 1 : 0; |
ecd1a12f MD |
1395 | |
1396 | reply.output_path_length = htobe32(output_path_length); | |
8d382dd4 JG |
1397 | ret = lttng_dynamic_buffer_append( |
1398 | &reply_payload, &reply, sizeof(reply)); | |
ecd1a12f MD |
1399 | if (ret) { |
1400 | ERR("Failed to append \"create session\" command reply header to payload buffer"); | |
1401 | goto end; | |
1402 | } | |
1403 | ||
8d382dd4 JG |
1404 | if (output_path_length) { |
1405 | ret = lttng_dynamic_buffer_append(&reply_payload, | |
1406 | session->output_path, | |
1407 | output_path_length); | |
1408 | if (ret) { | |
1409 | ERR("Failed to append \"create session\" command reply path to payload buffer"); | |
1410 | goto end; | |
1411 | } | |
ecd1a12f MD |
1412 | } |
1413 | } | |
1414 | ||
1415 | send_ret = conn->sock->ops->sendmsg(conn->sock, reply_payload.data, | |
1416 | reply_payload.size, 0); | |
1417 | if (send_ret < (ssize_t) reply_payload.size) { | |
1418 | ERR("Failed to send \"create session\" command reply of %zu bytes (ret = %zd)", | |
1419 | reply_payload.size, send_ret); | |
5312a3ed | 1420 | ret = -1; |
c5b6f4f0 | 1421 | } |
ecd1a12f | 1422 | end: |
4c6885d2 JG |
1423 | if (ret < 0 && session) { |
1424 | session_put(session); | |
1425 | } | |
ecd1a12f | 1426 | lttng_dynamic_buffer_reset(&reply_payload); |
c5b6f4f0 DG |
1427 | return ret; |
1428 | } | |
1429 | ||
a4baae1b JD |
1430 | /* |
1431 | * When we have received all the streams and the metadata for a channel, | |
1432 | * we make them visible to the viewer threads. | |
1433 | */ | |
7591bab1 | 1434 | static void publish_connection_local_streams(struct relay_connection *conn) |
a4baae1b | 1435 | { |
7591bab1 MD |
1436 | struct relay_stream *stream; |
1437 | struct relay_session *session = conn->session; | |
a4baae1b | 1438 | |
7591bab1 MD |
1439 | /* |
1440 | * We publish all streams belonging to a session atomically wrt | |
1441 | * session lock. | |
1442 | */ | |
1443 | pthread_mutex_lock(&session->lock); | |
1444 | rcu_read_lock(); | |
1445 | cds_list_for_each_entry_rcu(stream, &session->recv_list, | |
1446 | recv_node) { | |
1447 | stream_publish(stream); | |
a4baae1b | 1448 | } |
7591bab1 | 1449 | rcu_read_unlock(); |
a4baae1b | 1450 | |
7591bab1 MD |
1451 | /* |
1452 | * Inform the viewer that there are new streams in the session. | |
1453 | */ | |
1454 | if (session->viewer_attached) { | |
1455 | uatomic_set(&session->new_streams, 1); | |
1456 | } | |
1457 | pthread_mutex_unlock(&session->lock); | |
a4baae1b JD |
1458 | } |
1459 | ||
348a81dc JG |
1460 | static int conform_channel_path(char *channel_path) |
1461 | { | |
1462 | int ret = 0; | |
1463 | ||
1464 | if (strstr("../", channel_path)) { | |
1465 | ERR("Refusing channel path as it walks up the path hierarchy: \"%s\"", | |
1466 | channel_path); | |
1467 | ret = -1; | |
1468 | goto end; | |
1469 | } | |
1470 | ||
1471 | if (*channel_path == '/') { | |
1472 | const size_t len = strlen(channel_path); | |
1473 | ||
1474 | /* | |
1475 | * Channel paths from peers prior to 2.11 are expressed as an | |
1476 | * absolute path that is, in reality, relative to the relay | |
1477 | * daemon's output directory. Remove the leading slash so it | |
1478 | * is correctly interpreted as a relative path later on. | |
1479 | * | |
1480 | * len (and not len - 1) is used to copy the trailing NULL. | |
1481 | */ | |
1482 | bcopy(channel_path + 1, channel_path, len); | |
1483 | } | |
1484 | end: | |
1485 | return ret; | |
1486 | } | |
1487 | ||
b8aa1682 JD |
1488 | /* |
1489 | * relay_add_stream: allocate a new stream for a session | |
1490 | */ | |
f46376a1 MJ |
1491 | static int relay_add_stream( |
1492 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
5312a3ed JG |
1493 | struct relay_connection *conn, |
1494 | const struct lttng_buffer_view *payload) | |
b8aa1682 | 1495 | { |
7591bab1 MD |
1496 | int ret; |
1497 | ssize_t send_ret; | |
58eb9381 | 1498 | struct relay_session *session = conn->session; |
b8aa1682 JD |
1499 | struct relay_stream *stream = NULL; |
1500 | struct lttcomm_relayd_status_stream reply; | |
4030a636 | 1501 | struct ctf_trace *trace = NULL; |
7591bab1 MD |
1502 | uint64_t stream_handle = -1ULL; |
1503 | char *path_name = NULL, *channel_name = NULL; | |
1504 | uint64_t tracefile_size = 0, tracefile_count = 0; | |
348a81dc | 1505 | LTTNG_OPTIONAL(uint64_t) stream_chunk_id = {}; |
b8aa1682 | 1506 | |
5312a3ed | 1507 | if (!session || !conn->version_check_done) { |
b8aa1682 JD |
1508 | ERR("Trying to add a stream before version check"); |
1509 | ret = -1; | |
1510 | goto end_no_session; | |
1511 | } | |
1512 | ||
2f21a469 JR |
1513 | if (session->minor == 1) { |
1514 | /* For 2.1 */ | |
5312a3ed | 1515 | ret = cmd_recv_stream_2_1(payload, &path_name, |
7591bab1 | 1516 | &channel_name); |
2f21a469 JR |
1517 | } else if (session->minor > 1 && session->minor < 11) { |
1518 | /* From 2.2 to 2.10 */ | |
5312a3ed | 1519 | ret = cmd_recv_stream_2_2(payload, &path_name, |
7591bab1 | 1520 | &channel_name, &tracefile_size, &tracefile_count); |
2f21a469 JR |
1521 | } else { |
1522 | /* From 2.11 to ... */ | |
1523 | ret = cmd_recv_stream_2_11(payload, &path_name, | |
0b50e4b3 JG |
1524 | &channel_name, &tracefile_size, &tracefile_count, |
1525 | &stream_chunk_id.value); | |
1526 | stream_chunk_id.is_set = true; | |
0f907de1 | 1527 | } |
2f21a469 | 1528 | |
0f907de1 | 1529 | if (ret < 0) { |
7591bab1 | 1530 | goto send_reply; |
b8aa1682 JD |
1531 | } |
1532 | ||
348a81dc JG |
1533 | if (conform_channel_path(path_name)) { |
1534 | goto send_reply; | |
1535 | } | |
1536 | ||
2a635488 JR |
1537 | /* |
1538 | * Backward compatibility for --group-output-by-session. | |
1539 | * Prior to lttng 2.11, the complete path is passed by the stream. | |
1540 | * Starting at 2.11, lttng-relayd uses chunk. When dealing with producer | |
1541 | * >=2.11 the chunk is responsible for the output path. When dealing | |
1542 | * with producer < 2.11 the chunk output_path is the root output path | |
1543 | * and the stream carries the complete path (path_name). | |
1544 | * To support --group-output-by-session with older producer (<2.11), we | |
1545 | * need to craft the path based on the stream path. | |
1546 | */ | |
1547 | if (opt_group_output_by == RELAYD_GROUP_OUTPUT_BY_SESSION) { | |
1548 | if (conn->minor < 4) { | |
1549 | /* | |
1550 | * From 2.1 to 2.3, the session_name is not passed on | |
1551 | * the RELAYD_CREATE_SESSION command. The session name | |
1552 | * is necessary to detect the presence of a base_path | |
1553 | * inside the stream path. Without it we cannot perform | |
1554 | * a valid group-output-by-session transformation. | |
1555 | */ | |
1556 | WARN("Unable to perform a --group-by-session transformation for session %" PRIu64 | |
1557 | " for stream with path \"%s\" as it is produced by a peer using a protocol older than v2.4", | |
1558 | session->id, path_name); | |
1559 | } else if (conn->minor >= 4 && conn->minor < 11) { | |
1560 | char *group_by_session_path_name; | |
1561 | ||
a0377dfe | 1562 | LTTNG_ASSERT(session->session_name[0] != '\0'); |
2a635488 JR |
1563 | |
1564 | group_by_session_path_name = | |
1565 | backward_compat_group_by_session( | |
1566 | path_name, | |
d2cb4a90 JG |
1567 | session->session_name, |
1568 | session->creation_time.value); | |
2a635488 JR |
1569 | if (!group_by_session_path_name) { |
1570 | ERR("Failed to apply group by session to stream of session %" PRIu64, | |
1571 | session->id); | |
1572 | goto send_reply; | |
1573 | } | |
1574 | ||
1575 | DBG("Transformed session path from \"%s\" to \"%s\" to honor per-session name grouping", | |
1576 | path_name, group_by_session_path_name); | |
1577 | ||
1578 | free(path_name); | |
1579 | path_name = group_by_session_path_name; | |
1580 | } | |
1581 | } | |
1582 | ||
7591bab1 | 1583 | trace = ctf_trace_get_by_path_or_create(session, path_name); |
2a174661 | 1584 | if (!trace) { |
7591bab1 | 1585 | goto send_reply; |
2a174661 | 1586 | } |
2a174661 | 1587 | |
2a635488 | 1588 | /* This stream here has one reference on the trace. */ |
7591bab1 MD |
1589 | pthread_mutex_lock(&last_relay_stream_id_lock); |
1590 | stream_handle = ++last_relay_stream_id; | |
1591 | pthread_mutex_unlock(&last_relay_stream_id_lock); | |
d3e2ba59 | 1592 | |
7591bab1 MD |
1593 | /* We pass ownership of path_name and channel_name. */ |
1594 | stream = stream_create(trace, stream_handle, path_name, | |
348a81dc | 1595 | channel_name, tracefile_size, tracefile_count); |
7591bab1 MD |
1596 | path_name = NULL; |
1597 | channel_name = NULL; | |
a4baae1b | 1598 | |
2a174661 | 1599 | /* |
7591bab1 MD |
1600 | * Streams are the owners of their trace. Reference to trace is |
1601 | * kept within stream_create(). | |
2a174661 | 1602 | */ |
7591bab1 | 1603 | ctf_trace_put(trace); |
d3e2ba59 | 1604 | |
7591bab1 | 1605 | send_reply: |
53efb85a | 1606 | memset(&reply, 0, sizeof(reply)); |
7591bab1 MD |
1607 | reply.handle = htobe64(stream_handle); |
1608 | if (!stream) { | |
f73fabfd | 1609 | reply.ret_code = htobe32(LTTNG_ERR_UNK); |
b8aa1682 | 1610 | } else { |
f73fabfd | 1611 | reply.ret_code = htobe32(LTTNG_OK); |
b8aa1682 | 1612 | } |
5af40280 | 1613 | |
58eb9381 | 1614 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
b8aa1682 | 1615 | sizeof(struct lttcomm_relayd_status_stream), 0); |
5312a3ed JG |
1616 | if (send_ret < (ssize_t) sizeof(reply)) { |
1617 | ERR("Failed to send \"add stream\" command reply (ret = %zd)", | |
1618 | send_ret); | |
1619 | ret = -1; | |
b8aa1682 JD |
1620 | } |
1621 | ||
1622 | end_no_session: | |
7591bab1 MD |
1623 | free(path_name); |
1624 | free(channel_name); | |
0f907de1 | 1625 | return ret; |
b8aa1682 JD |
1626 | } |
1627 | ||
173af62f DG |
1628 | /* |
1629 | * relay_close_stream: close a specific stream | |
1630 | */ | |
f46376a1 MJ |
1631 | static int relay_close_stream( |
1632 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
5312a3ed JG |
1633 | struct relay_connection *conn, |
1634 | const struct lttng_buffer_view *payload) | |
173af62f | 1635 | { |
5312a3ed JG |
1636 | int ret; |
1637 | ssize_t send_ret; | |
58eb9381 | 1638 | struct relay_session *session = conn->session; |
173af62f DG |
1639 | struct lttcomm_relayd_close_stream stream_info; |
1640 | struct lttcomm_relayd_generic_reply reply; | |
1641 | struct relay_stream *stream; | |
173af62f DG |
1642 | |
1643 | DBG("Close stream received"); | |
1644 | ||
5312a3ed | 1645 | if (!session || !conn->version_check_done) { |
173af62f DG |
1646 | ERR("Trying to close a stream before version check"); |
1647 | ret = -1; | |
1648 | goto end_no_session; | |
1649 | } | |
1650 | ||
5312a3ed JG |
1651 | if (payload->size < sizeof(stream_info)) { |
1652 | ERR("Unexpected payload size in \"relay_close_stream\": expected >= %zu bytes, got %zu bytes", | |
1653 | sizeof(stream_info), payload->size); | |
173af62f DG |
1654 | ret = -1; |
1655 | goto end_no_session; | |
1656 | } | |
5312a3ed JG |
1657 | memcpy(&stream_info, payload->data, sizeof(stream_info)); |
1658 | stream_info.stream_id = be64toh(stream_info.stream_id); | |
1659 | stream_info.last_net_seq_num = be64toh(stream_info.last_net_seq_num); | |
173af62f | 1660 | |
5312a3ed | 1661 | stream = stream_get_by_id(stream_info.stream_id); |
173af62f DG |
1662 | if (!stream) { |
1663 | ret = -1; | |
7591bab1 | 1664 | goto end; |
173af62f | 1665 | } |
77f7bd85 MD |
1666 | |
1667 | /* | |
1668 | * Set last_net_seq_num before the close flag. Required by data | |
1669 | * pending check. | |
1670 | */ | |
7591bab1 | 1671 | pthread_mutex_lock(&stream->lock); |
5312a3ed | 1672 | stream->last_net_seq_num = stream_info.last_net_seq_num; |
77f7bd85 MD |
1673 | pthread_mutex_unlock(&stream->lock); |
1674 | ||
bda7c7b9 JG |
1675 | /* |
1676 | * This is one of the conditions which may trigger a stream close | |
1677 | * with the others being: | |
1678 | * 1) A close command is received for a stream | |
1679 | * 2) The control connection owning the stream is closed | |
1680 | * 3) We have received all of the stream's data _after_ a close | |
1681 | * request. | |
1682 | */ | |
1683 | try_stream_close(stream); | |
7591bab1 | 1684 | stream_put(stream); |
5312a3ed | 1685 | ret = 0; |
173af62f | 1686 | |
7591bab1 | 1687 | end: |
53efb85a | 1688 | memset(&reply, 0, sizeof(reply)); |
173af62f | 1689 | if (ret < 0) { |
f73fabfd | 1690 | reply.ret_code = htobe32(LTTNG_ERR_UNK); |
173af62f | 1691 | } else { |
f73fabfd | 1692 | reply.ret_code = htobe32(LTTNG_OK); |
173af62f | 1693 | } |
58eb9381 | 1694 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
173af62f | 1695 | sizeof(struct lttcomm_relayd_generic_reply), 0); |
5312a3ed JG |
1696 | if (send_ret < (ssize_t) sizeof(reply)) { |
1697 | ERR("Failed to send \"close stream\" command reply (ret = %zd)", | |
1698 | send_ret); | |
1699 | ret = -1; | |
173af62f DG |
1700 | } |
1701 | ||
1702 | end_no_session: | |
1703 | return ret; | |
1704 | } | |
1705 | ||
93ec662e JD |
1706 | /* |
1707 | * relay_reset_metadata: reset a metadata stream | |
1708 | */ | |
1709 | static | |
f46376a1 MJ |
1710 | int relay_reset_metadata( |
1711 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
5312a3ed JG |
1712 | struct relay_connection *conn, |
1713 | const struct lttng_buffer_view *payload) | |
93ec662e | 1714 | { |
5312a3ed JG |
1715 | int ret; |
1716 | ssize_t send_ret; | |
93ec662e JD |
1717 | struct relay_session *session = conn->session; |
1718 | struct lttcomm_relayd_reset_metadata stream_info; | |
1719 | struct lttcomm_relayd_generic_reply reply; | |
1720 | struct relay_stream *stream; | |
1721 | ||
1722 | DBG("Reset metadata received"); | |
1723 | ||
5312a3ed | 1724 | if (!session || !conn->version_check_done) { |
93ec662e JD |
1725 | ERR("Trying to reset a metadata stream before version check"); |
1726 | ret = -1; | |
1727 | goto end_no_session; | |
1728 | } | |
1729 | ||
5312a3ed JG |
1730 | if (payload->size < sizeof(stream_info)) { |
1731 | ERR("Unexpected payload size in \"relay_reset_metadata\": expected >= %zu bytes, got %zu bytes", | |
1732 | sizeof(stream_info), payload->size); | |
93ec662e JD |
1733 | ret = -1; |
1734 | goto end_no_session; | |
1735 | } | |
5312a3ed JG |
1736 | memcpy(&stream_info, payload->data, sizeof(stream_info)); |
1737 | stream_info.stream_id = be64toh(stream_info.stream_id); | |
1738 | stream_info.version = be64toh(stream_info.version); | |
1739 | ||
1740 | DBG("Update metadata to version %" PRIu64, stream_info.version); | |
93ec662e JD |
1741 | |
1742 | /* Unsupported for live sessions for now. */ | |
1743 | if (session->live_timer != 0) { | |
1744 | ret = -1; | |
1745 | goto end; | |
1746 | } | |
1747 | ||
5312a3ed | 1748 | stream = stream_get_by_id(stream_info.stream_id); |
93ec662e JD |
1749 | if (!stream) { |
1750 | ret = -1; | |
1751 | goto end; | |
1752 | } | |
1753 | pthread_mutex_lock(&stream->lock); | |
1754 | if (!stream->is_metadata) { | |
1755 | ret = -1; | |
1756 | goto end_unlock; | |
1757 | } | |
1758 | ||
c35f9726 | 1759 | ret = stream_reset_file(stream); |
93ec662e | 1760 | if (ret < 0) { |
c35f9726 JG |
1761 | ERR("Failed to reset metadata stream %" PRIu64 |
1762 | ": stream_path = %s, channel = %s", | |
1763 | stream->stream_handle, stream->path_name, | |
1764 | stream->channel_name); | |
93ec662e JD |
1765 | goto end_unlock; |
1766 | } | |
93ec662e JD |
1767 | end_unlock: |
1768 | pthread_mutex_unlock(&stream->lock); | |
1769 | stream_put(stream); | |
1770 | ||
1771 | end: | |
1772 | memset(&reply, 0, sizeof(reply)); | |
1773 | if (ret < 0) { | |
1774 | reply.ret_code = htobe32(LTTNG_ERR_UNK); | |
1775 | } else { | |
1776 | reply.ret_code = htobe32(LTTNG_OK); | |
1777 | } | |
1778 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, | |
1779 | sizeof(struct lttcomm_relayd_generic_reply), 0); | |
5312a3ed JG |
1780 | if (send_ret < (ssize_t) sizeof(reply)) { |
1781 | ERR("Failed to send \"reset metadata\" command reply (ret = %zd)", | |
1782 | send_ret); | |
1783 | ret = -1; | |
93ec662e JD |
1784 | } |
1785 | ||
1786 | end_no_session: | |
1787 | return ret; | |
1788 | } | |
1789 | ||
b8aa1682 JD |
1790 | /* |
1791 | * relay_unknown_command: send -1 if received unknown command | |
1792 | */ | |
7591bab1 | 1793 | static void relay_unknown_command(struct relay_connection *conn) |
b8aa1682 JD |
1794 | { |
1795 | struct lttcomm_relayd_generic_reply reply; | |
5312a3ed | 1796 | ssize_t send_ret; |
b8aa1682 | 1797 | |
53efb85a | 1798 | memset(&reply, 0, sizeof(reply)); |
f73fabfd | 1799 | reply.ret_code = htobe32(LTTNG_ERR_UNK); |
5312a3ed JG |
1800 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
1801 | if (send_ret < sizeof(reply)) { | |
1802 | ERR("Failed to send \"unknown command\" command reply (ret = %zd)", send_ret); | |
b8aa1682 JD |
1803 | } |
1804 | } | |
1805 | ||
1806 | /* | |
1807 | * relay_start: send an acknowledgment to the client to tell if we are | |
1808 | * ready to receive data. We are ready if a session is established. | |
1809 | */ | |
f46376a1 MJ |
1810 | static int relay_start( |
1811 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
5312a3ed | 1812 | struct relay_connection *conn, |
f46376a1 | 1813 | const struct lttng_buffer_view *payload __attribute__((unused))) |
b8aa1682 | 1814 | { |
5312a3ed JG |
1815 | int ret = 0; |
1816 | ssize_t send_ret; | |
b8aa1682 | 1817 | struct lttcomm_relayd_generic_reply reply; |
58eb9381 | 1818 | struct relay_session *session = conn->session; |
b8aa1682 JD |
1819 | |
1820 | if (!session) { | |
1821 | DBG("Trying to start the streaming without a session established"); | |
f73fabfd | 1822 | ret = htobe32(LTTNG_ERR_UNK); |
b8aa1682 JD |
1823 | } |
1824 | ||
53efb85a | 1825 | memset(&reply, 0, sizeof(reply)); |
5312a3ed JG |
1826 | reply.ret_code = htobe32(LTTNG_OK); |
1827 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, | |
1828 | sizeof(reply), 0); | |
1829 | if (send_ret < (ssize_t) sizeof(reply)) { | |
1830 | ERR("Failed to send \"relay_start\" command reply (ret = %zd)", | |
1831 | send_ret); | |
1832 | ret = -1; | |
b8aa1682 JD |
1833 | } |
1834 | ||
1835 | return ret; | |
1836 | } | |
1837 | ||
b8aa1682 | 1838 | /* |
7591bab1 | 1839 | * relay_recv_metadata: receive the metadata for the session. |
b8aa1682 | 1840 | */ |
5312a3ed JG |
1841 | static int relay_recv_metadata(const struct lttcomm_relayd_hdr *recv_hdr, |
1842 | struct relay_connection *conn, | |
1843 | const struct lttng_buffer_view *payload) | |
b8aa1682 | 1844 | { |
32d1569c | 1845 | int ret = 0; |
58eb9381 | 1846 | struct relay_session *session = conn->session; |
5312a3ed | 1847 | struct lttcomm_relayd_metadata_payload metadata_payload_header; |
b8aa1682 | 1848 | struct relay_stream *metadata_stream; |
5312a3ed | 1849 | uint64_t metadata_payload_size; |
c35f9726 | 1850 | struct lttng_buffer_view packet_view; |
b8aa1682 JD |
1851 | |
1852 | if (!session) { | |
1853 | ERR("Metadata sent before version check"); | |
1854 | ret = -1; | |
1855 | goto end; | |
1856 | } | |
1857 | ||
5312a3ed | 1858 | if (recv_hdr->data_size < sizeof(struct lttcomm_relayd_metadata_payload)) { |
f6416125 MD |
1859 | ERR("Incorrect data size"); |
1860 | ret = -1; | |
1861 | goto end; | |
1862 | } | |
5312a3ed JG |
1863 | metadata_payload_size = recv_hdr->data_size - |
1864 | sizeof(struct lttcomm_relayd_metadata_payload); | |
f6416125 | 1865 | |
5312a3ed JG |
1866 | memcpy(&metadata_payload_header, payload->data, |
1867 | sizeof(metadata_payload_header)); | |
1868 | metadata_payload_header.stream_id = be64toh( | |
1869 | metadata_payload_header.stream_id); | |
1870 | metadata_payload_header.padding_size = be32toh( | |
1871 | metadata_payload_header.padding_size); | |
9d1bbf21 | 1872 | |
5312a3ed | 1873 | metadata_stream = stream_get_by_id(metadata_payload_header.stream_id); |
b8aa1682 JD |
1874 | if (!metadata_stream) { |
1875 | ret = -1; | |
7591bab1 | 1876 | goto end; |
b8aa1682 JD |
1877 | } |
1878 | ||
c35f9726 JG |
1879 | packet_view = lttng_buffer_view_from_view(payload, |
1880 | sizeof(metadata_payload_header), metadata_payload_size); | |
3e6e0df2 | 1881 | if (!lttng_buffer_view_is_valid(&packet_view)) { |
c35f9726 | 1882 | ERR("Invalid metadata packet length announced by header"); |
b8aa1682 | 1883 | ret = -1; |
7591bab1 | 1884 | goto end_put; |
b8aa1682 | 1885 | } |
1d4dfdef | 1886 | |
c35f9726 JG |
1887 | pthread_mutex_lock(&metadata_stream->lock); |
1888 | ret = stream_write(metadata_stream, &packet_view, | |
5312a3ed | 1889 | metadata_payload_header.padding_size); |
c35f9726 JG |
1890 | pthread_mutex_unlock(&metadata_stream->lock); |
1891 | if (ret){ | |
5312a3ed | 1892 | ret = -1; |
7591bab1 | 1893 | goto end_put; |
1d4dfdef | 1894 | } |
7591bab1 | 1895 | end_put: |
7591bab1 | 1896 | stream_put(metadata_stream); |
b8aa1682 JD |
1897 | end: |
1898 | return ret; | |
1899 | } | |
1900 | ||
1901 | /* | |
1902 | * relay_send_version: send relayd version number | |
1903 | */ | |
f46376a1 MJ |
1904 | static int relay_send_version( |
1905 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
5312a3ed JG |
1906 | struct relay_connection *conn, |
1907 | const struct lttng_buffer_view *payload) | |
b8aa1682 | 1908 | { |
7f51dcba | 1909 | int ret; |
5312a3ed | 1910 | ssize_t send_ret; |
092b6259 | 1911 | struct lttcomm_relayd_version reply, msg; |
87cb6359 | 1912 | bool compatible = true; |
b8aa1682 | 1913 | |
5312a3ed | 1914 | conn->version_check_done = true; |
b8aa1682 | 1915 | |
092b6259 | 1916 | /* Get version from the other side. */ |
5312a3ed JG |
1917 | if (payload->size < sizeof(msg)) { |
1918 | ERR("Unexpected payload size in \"relay_send_version\": expected >= %zu bytes, got %zu bytes", | |
1919 | sizeof(msg), payload->size); | |
092b6259 | 1920 | ret = -1; |
092b6259 DG |
1921 | goto end; |
1922 | } | |
1923 | ||
5312a3ed JG |
1924 | memcpy(&msg, payload->data, sizeof(msg)); |
1925 | msg.major = be32toh(msg.major); | |
1926 | msg.minor = be32toh(msg.minor); | |
1927 | ||
53efb85a | 1928 | memset(&reply, 0, sizeof(reply)); |
d83a952c MD |
1929 | reply.major = RELAYD_VERSION_COMM_MAJOR; |
1930 | reply.minor = RELAYD_VERSION_COMM_MINOR; | |
d4519fa3 JD |
1931 | |
1932 | /* Major versions must be the same */ | |
5312a3ed | 1933 | if (reply.major != msg.major) { |
6151a90f | 1934 | DBG("Incompatible major versions (%u vs %u), deleting session", |
5312a3ed | 1935 | reply.major, msg.major); |
87cb6359 | 1936 | compatible = false; |
d4519fa3 JD |
1937 | } |
1938 | ||
58eb9381 | 1939 | conn->major = reply.major; |
0f907de1 | 1940 | /* We adapt to the lowest compatible version */ |
5312a3ed | 1941 | if (reply.minor <= msg.minor) { |
58eb9381 | 1942 | conn->minor = reply.minor; |
0f907de1 | 1943 | } else { |
5312a3ed | 1944 | conn->minor = msg.minor; |
0f907de1 JD |
1945 | } |
1946 | ||
6151a90f JD |
1947 | reply.major = htobe32(reply.major); |
1948 | reply.minor = htobe32(reply.minor); | |
5312a3ed JG |
1949 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
1950 | sizeof(reply), 0); | |
1951 | if (send_ret < (ssize_t) sizeof(reply)) { | |
1952 | ERR("Failed to send \"send version\" command reply (ret = %zd)", | |
1953 | send_ret); | |
1954 | ret = -1; | |
1955 | goto end; | |
1956 | } else { | |
1957 | ret = 0; | |
6151a90f JD |
1958 | } |
1959 | ||
87cb6359 JD |
1960 | if (!compatible) { |
1961 | ret = -1; | |
1962 | goto end; | |
1963 | } | |
1964 | ||
58eb9381 DG |
1965 | DBG("Version check done using protocol %u.%u", conn->major, |
1966 | conn->minor); | |
b8aa1682 JD |
1967 | |
1968 | end: | |
1969 | return ret; | |
1970 | } | |
1971 | ||
c8f59ee5 | 1972 | /* |
6d805429 | 1973 | * Check for data pending for a given stream id from the session daemon. |
c8f59ee5 | 1974 | */ |
f46376a1 MJ |
1975 | static int relay_data_pending( |
1976 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
5312a3ed JG |
1977 | struct relay_connection *conn, |
1978 | const struct lttng_buffer_view *payload) | |
c8f59ee5 | 1979 | { |
58eb9381 | 1980 | struct relay_session *session = conn->session; |
6d805429 | 1981 | struct lttcomm_relayd_data_pending msg; |
c8f59ee5 DG |
1982 | struct lttcomm_relayd_generic_reply reply; |
1983 | struct relay_stream *stream; | |
5312a3ed | 1984 | ssize_t send_ret; |
c8f59ee5 | 1985 | int ret; |
298a25ca | 1986 | uint64_t stream_seq; |
c8f59ee5 | 1987 | |
6d805429 | 1988 | DBG("Data pending command received"); |
c8f59ee5 | 1989 | |
5312a3ed | 1990 | if (!session || !conn->version_check_done) { |
c8f59ee5 DG |
1991 | ERR("Trying to check for data before version check"); |
1992 | ret = -1; | |
1993 | goto end_no_session; | |
1994 | } | |
1995 | ||
5312a3ed JG |
1996 | if (payload->size < sizeof(msg)) { |
1997 | ERR("Unexpected payload size in \"relay_data_pending\": expected >= %zu bytes, got %zu bytes", | |
1998 | sizeof(msg), payload->size); | |
c8f59ee5 DG |
1999 | ret = -1; |
2000 | goto end_no_session; | |
2001 | } | |
5312a3ed JG |
2002 | memcpy(&msg, payload->data, sizeof(msg)); |
2003 | msg.stream_id = be64toh(msg.stream_id); | |
2004 | msg.last_net_seq_num = be64toh(msg.last_net_seq_num); | |
c8f59ee5 | 2005 | |
5312a3ed | 2006 | stream = stream_get_by_id(msg.stream_id); |
de91f48a | 2007 | if (stream == NULL) { |
c8f59ee5 | 2008 | ret = -1; |
7591bab1 | 2009 | goto end; |
c8f59ee5 DG |
2010 | } |
2011 | ||
7591bab1 MD |
2012 | pthread_mutex_lock(&stream->lock); |
2013 | ||
298a25ca JG |
2014 | if (session_streams_have_index(session)) { |
2015 | /* | |
2016 | * Ensure that both the index and stream data have been | |
2017 | * flushed up to the requested point. | |
2018 | */ | |
ac497a37 | 2019 | stream_seq = std::min(stream->prev_data_seq, stream->prev_index_seq); |
298a25ca | 2020 | } else { |
a8f9f353 | 2021 | stream_seq = stream->prev_data_seq; |
298a25ca | 2022 | } |
a8f9f353 | 2023 | DBG("Data pending for stream id %" PRIu64 ": prev_data_seq %" PRIu64 |
298a25ca JG |
2024 | ", prev_index_seq %" PRIu64 |
2025 | ", and last_seq %" PRIu64, msg.stream_id, | |
a8f9f353 | 2026 | stream->prev_data_seq, stream->prev_index_seq, |
298a25ca | 2027 | msg.last_net_seq_num); |
c8f59ee5 | 2028 | |
33832e64 | 2029 | /* Avoid wrapping issue */ |
298a25ca | 2030 | if (((int64_t) (stream_seq - msg.last_net_seq_num)) >= 0) { |
6d805429 | 2031 | /* Data has in fact been written and is NOT pending */ |
c8f59ee5 | 2032 | ret = 0; |
6d805429 DG |
2033 | } else { |
2034 | /* Data still being streamed thus pending */ | |
2035 | ret = 1; | |
c8f59ee5 DG |
2036 | } |
2037 | ||
7591bab1 MD |
2038 | stream->data_pending_check_done = true; |
2039 | pthread_mutex_unlock(&stream->lock); | |
f7079f67 | 2040 | |
7591bab1 MD |
2041 | stream_put(stream); |
2042 | end: | |
c8f59ee5 | 2043 | |
53efb85a | 2044 | memset(&reply, 0, sizeof(reply)); |
c8f59ee5 | 2045 | reply.ret_code = htobe32(ret); |
5312a3ed JG |
2046 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
2047 | if (send_ret < (ssize_t) sizeof(reply)) { | |
2048 | ERR("Failed to send \"data pending\" command reply (ret = %zd)", | |
2049 | send_ret); | |
2050 | ret = -1; | |
c8f59ee5 DG |
2051 | } |
2052 | ||
2053 | end_no_session: | |
2054 | return ret; | |
2055 | } | |
2056 | ||
2057 | /* | |
2058 | * Wait for the control socket to reach a quiescent state. | |
2059 | * | |
7591bab1 MD |
2060 | * Note that for now, when receiving this command from the session |
2061 | * daemon, this means that every subsequent commands or data received on | |
2062 | * the control socket has been handled. So, this is why we simply return | |
2063 | * OK here. | |
c8f59ee5 | 2064 | */ |
f46376a1 MJ |
2065 | static int relay_quiescent_control( |
2066 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
5312a3ed JG |
2067 | struct relay_connection *conn, |
2068 | const struct lttng_buffer_view *payload) | |
c8f59ee5 DG |
2069 | { |
2070 | int ret; | |
5312a3ed | 2071 | ssize_t send_ret; |
ad7051c0 | 2072 | struct relay_stream *stream; |
ad7051c0 | 2073 | struct lttcomm_relayd_quiescent_control msg; |
c8f59ee5 DG |
2074 | struct lttcomm_relayd_generic_reply reply; |
2075 | ||
2076 | DBG("Checking quiescent state on control socket"); | |
2077 | ||
5312a3ed | 2078 | if (!conn->session || !conn->version_check_done) { |
ad7051c0 DG |
2079 | ERR("Trying to check for data before version check"); |
2080 | ret = -1; | |
2081 | goto end_no_session; | |
2082 | } | |
2083 | ||
5312a3ed JG |
2084 | if (payload->size < sizeof(msg)) { |
2085 | ERR("Unexpected payload size in \"relay_quiescent_control\": expected >= %zu bytes, got %zu bytes", | |
2086 | sizeof(msg), payload->size); | |
ad7051c0 DG |
2087 | ret = -1; |
2088 | goto end_no_session; | |
2089 | } | |
5312a3ed JG |
2090 | memcpy(&msg, payload->data, sizeof(msg)); |
2091 | msg.stream_id = be64toh(msg.stream_id); | |
ad7051c0 | 2092 | |
5312a3ed | 2093 | stream = stream_get_by_id(msg.stream_id); |
7591bab1 MD |
2094 | if (!stream) { |
2095 | goto reply; | |
2096 | } | |
2097 | pthread_mutex_lock(&stream->lock); | |
2098 | stream->data_pending_check_done = true; | |
2099 | pthread_mutex_unlock(&stream->lock); | |
5312a3ed JG |
2100 | |
2101 | DBG("Relay quiescent control pending flag set to %" PRIu64, msg.stream_id); | |
7591bab1 MD |
2102 | stream_put(stream); |
2103 | reply: | |
53efb85a | 2104 | memset(&reply, 0, sizeof(reply)); |
c8f59ee5 | 2105 | reply.ret_code = htobe32(LTTNG_OK); |
5312a3ed JG |
2106 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
2107 | if (send_ret < (ssize_t) sizeof(reply)) { | |
2108 | ERR("Failed to send \"quiescent control\" command reply (ret = %zd)", | |
2109 | send_ret); | |
2110 | ret = -1; | |
2111 | } else { | |
2112 | ret = 0; | |
c8f59ee5 DG |
2113 | } |
2114 | ||
ad7051c0 | 2115 | end_no_session: |
c8f59ee5 DG |
2116 | return ret; |
2117 | } | |
2118 | ||
f7079f67 | 2119 | /* |
7591bab1 MD |
2120 | * Initialize a data pending command. This means that a consumer is about |
2121 | * to ask for data pending for each stream it holds. Simply iterate over | |
2122 | * all streams of a session and set the data_pending_check_done flag. | |
f7079f67 DG |
2123 | * |
2124 | * This command returns to the client a LTTNG_OK code. | |
2125 | */ | |
5312a3ed JG |
2126 | static int relay_begin_data_pending(const struct lttcomm_relayd_hdr *recv_hdr, |
2127 | struct relay_connection *conn, | |
2128 | const struct lttng_buffer_view *payload) | |
f7079f67 DG |
2129 | { |
2130 | int ret; | |
5312a3ed | 2131 | ssize_t send_ret; |
f7079f67 DG |
2132 | struct lttng_ht_iter iter; |
2133 | struct lttcomm_relayd_begin_data_pending msg; | |
2134 | struct lttcomm_relayd_generic_reply reply; | |
2135 | struct relay_stream *stream; | |
f7079f67 | 2136 | |
a0377dfe FD |
2137 | LTTNG_ASSERT(recv_hdr); |
2138 | LTTNG_ASSERT(conn); | |
f7079f67 DG |
2139 | |
2140 | DBG("Init streams for data pending"); | |
2141 | ||
5312a3ed | 2142 | if (!conn->session || !conn->version_check_done) { |
f7079f67 DG |
2143 | ERR("Trying to check for data before version check"); |
2144 | ret = -1; | |
2145 | goto end_no_session; | |
2146 | } | |
2147 | ||
5312a3ed JG |
2148 | if (payload->size < sizeof(msg)) { |
2149 | ERR("Unexpected payload size in \"relay_begin_data_pending\": expected >= %zu bytes, got %zu bytes", | |
2150 | sizeof(msg), payload->size); | |
f7079f67 DG |
2151 | ret = -1; |
2152 | goto end_no_session; | |
2153 | } | |
5312a3ed JG |
2154 | memcpy(&msg, payload->data, sizeof(msg)); |
2155 | msg.session_id = be64toh(msg.session_id); | |
f7079f67 DG |
2156 | |
2157 | /* | |
7591bab1 MD |
2158 | * Iterate over all streams to set the begin data pending flag. |
2159 | * For now, the streams are indexed by stream handle so we have | |
2160 | * to iterate over all streams to find the one associated with | |
2161 | * the right session_id. | |
f7079f67 DG |
2162 | */ |
2163 | rcu_read_lock(); | |
d3e2ba59 | 2164 | cds_lfht_for_each_entry(relay_streams_ht->ht, &iter.iter, stream, |
2a174661 | 2165 | node.node) { |
7591bab1 MD |
2166 | if (!stream_get(stream)) { |
2167 | continue; | |
2168 | } | |
5312a3ed | 2169 | if (stream->trace->session->id == msg.session_id) { |
7591bab1 MD |
2170 | pthread_mutex_lock(&stream->lock); |
2171 | stream->data_pending_check_done = false; | |
2172 | pthread_mutex_unlock(&stream->lock); | |
f7079f67 DG |
2173 | DBG("Set begin data pending flag to stream %" PRIu64, |
2174 | stream->stream_handle); | |
2175 | } | |
7591bab1 | 2176 | stream_put(stream); |
f7079f67 DG |
2177 | } |
2178 | rcu_read_unlock(); | |
2179 | ||
53efb85a | 2180 | memset(&reply, 0, sizeof(reply)); |
f7079f67 DG |
2181 | /* All good, send back reply. */ |
2182 | reply.ret_code = htobe32(LTTNG_OK); | |
2183 | ||
5312a3ed JG |
2184 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
2185 | if (send_ret < (ssize_t) sizeof(reply)) { | |
2186 | ERR("Failed to send \"begin data pending\" command reply (ret = %zd)", | |
2187 | send_ret); | |
2188 | ret = -1; | |
2189 | } else { | |
2190 | ret = 0; | |
f7079f67 DG |
2191 | } |
2192 | ||
2193 | end_no_session: | |
2194 | return ret; | |
2195 | } | |
2196 | ||
2197 | /* | |
7591bab1 MD |
2198 | * End data pending command. This will check, for a given session id, if |
2199 | * each stream associated with it has its data_pending_check_done flag | |
2200 | * set. If not, this means that the client lost track of the stream but | |
2201 | * the data is still being streamed on our side. In this case, we inform | |
2202 | * the client that data is in flight. | |
f7079f67 DG |
2203 | * |
2204 | * Return to the client if there is data in flight or not with a ret_code. | |
2205 | */ | |
f46376a1 MJ |
2206 | static int relay_end_data_pending( |
2207 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
5312a3ed JG |
2208 | struct relay_connection *conn, |
2209 | const struct lttng_buffer_view *payload) | |
f7079f67 DG |
2210 | { |
2211 | int ret; | |
5312a3ed | 2212 | ssize_t send_ret; |
f7079f67 DG |
2213 | struct lttng_ht_iter iter; |
2214 | struct lttcomm_relayd_end_data_pending msg; | |
2215 | struct lttcomm_relayd_generic_reply reply; | |
2216 | struct relay_stream *stream; | |
f7079f67 DG |
2217 | uint32_t is_data_inflight = 0; |
2218 | ||
f7079f67 DG |
2219 | DBG("End data pending command"); |
2220 | ||
5312a3ed | 2221 | if (!conn->session || !conn->version_check_done) { |
f7079f67 DG |
2222 | ERR("Trying to check for data before version check"); |
2223 | ret = -1; | |
2224 | goto end_no_session; | |
2225 | } | |
2226 | ||
5312a3ed JG |
2227 | if (payload->size < sizeof(msg)) { |
2228 | ERR("Unexpected payload size in \"relay_end_data_pending\": expected >= %zu bytes, got %zu bytes", | |
2229 | sizeof(msg), payload->size); | |
f7079f67 DG |
2230 | ret = -1; |
2231 | goto end_no_session; | |
2232 | } | |
5312a3ed JG |
2233 | memcpy(&msg, payload->data, sizeof(msg)); |
2234 | msg.session_id = be64toh(msg.session_id); | |
f7079f67 | 2235 | |
7591bab1 MD |
2236 | /* |
2237 | * Iterate over all streams to see if the begin data pending | |
2238 | * flag is set. | |
2239 | */ | |
f7079f67 | 2240 | rcu_read_lock(); |
d3e2ba59 | 2241 | cds_lfht_for_each_entry(relay_streams_ht->ht, &iter.iter, stream, |
2a174661 | 2242 | node.node) { |
7591bab1 MD |
2243 | if (!stream_get(stream)) { |
2244 | continue; | |
2245 | } | |
5312a3ed | 2246 | if (stream->trace->session->id != msg.session_id) { |
7591bab1 MD |
2247 | stream_put(stream); |
2248 | continue; | |
2249 | } | |
2250 | pthread_mutex_lock(&stream->lock); | |
2251 | if (!stream->data_pending_check_done) { | |
298a25ca JG |
2252 | uint64_t stream_seq; |
2253 | ||
2254 | if (session_streams_have_index(conn->session)) { | |
2255 | /* | |
2256 | * Ensure that both the index and stream data have been | |
2257 | * flushed up to the requested point. | |
2258 | */ | |
ac497a37 | 2259 | stream_seq = std::min(stream->prev_data_seq, stream->prev_index_seq); |
298a25ca | 2260 | } else { |
a8f9f353 | 2261 | stream_seq = stream->prev_data_seq; |
298a25ca JG |
2262 | } |
2263 | if (!stream->closed || !(((int64_t) (stream_seq - stream->last_net_seq_num)) >= 0)) { | |
7591bab1 MD |
2264 | is_data_inflight = 1; |
2265 | DBG("Data is still in flight for stream %" PRIu64, | |
2266 | stream->stream_handle); | |
2267 | pthread_mutex_unlock(&stream->lock); | |
2268 | stream_put(stream); | |
2269 | break; | |
2270 | } | |
f7079f67 | 2271 | } |
7591bab1 MD |
2272 | pthread_mutex_unlock(&stream->lock); |
2273 | stream_put(stream); | |
f7079f67 DG |
2274 | } |
2275 | rcu_read_unlock(); | |
2276 | ||
53efb85a | 2277 | memset(&reply, 0, sizeof(reply)); |
f7079f67 DG |
2278 | /* All good, send back reply. */ |
2279 | reply.ret_code = htobe32(is_data_inflight); | |
2280 | ||
5312a3ed JG |
2281 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
2282 | if (send_ret < (ssize_t) sizeof(reply)) { | |
2283 | ERR("Failed to send \"end data pending\" command reply (ret = %zd)", | |
2284 | send_ret); | |
2285 | ret = -1; | |
2286 | } else { | |
2287 | ret = 0; | |
f7079f67 DG |
2288 | } |
2289 | ||
2290 | end_no_session: | |
2291 | return ret; | |
2292 | } | |
2293 | ||
1c20f0e2 JD |
2294 | /* |
2295 | * Receive an index for a specific stream. | |
2296 | * | |
2297 | * Return 0 on success else a negative value. | |
2298 | */ | |
f46376a1 MJ |
2299 | static int relay_recv_index( |
2300 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
5312a3ed JG |
2301 | struct relay_connection *conn, |
2302 | const struct lttng_buffer_view *payload) | |
1c20f0e2 | 2303 | { |
5312a3ed JG |
2304 | int ret; |
2305 | ssize_t send_ret; | |
58eb9381 | 2306 | struct relay_session *session = conn->session; |
1c20f0e2 | 2307 | struct lttcomm_relayd_index index_info; |
1c20f0e2 JD |
2308 | struct lttcomm_relayd_generic_reply reply; |
2309 | struct relay_stream *stream; | |
f8f3885c | 2310 | size_t msg_len; |
1c20f0e2 | 2311 | |
a0377dfe | 2312 | LTTNG_ASSERT(conn); |
1c20f0e2 JD |
2313 | |
2314 | DBG("Relay receiving index"); | |
2315 | ||
5312a3ed | 2316 | if (!session || !conn->version_check_done) { |
1c20f0e2 JD |
2317 | ERR("Trying to close a stream before version check"); |
2318 | ret = -1; | |
2319 | goto end_no_session; | |
2320 | } | |
2321 | ||
f8f3885c MD |
2322 | msg_len = lttcomm_relayd_index_len( |
2323 | lttng_to_index_major(conn->major, conn->minor), | |
2324 | lttng_to_index_minor(conn->major, conn->minor)); | |
5312a3ed JG |
2325 | if (payload->size < msg_len) { |
2326 | ERR("Unexpected payload size in \"relay_recv_index\": expected >= %zu bytes, got %zu bytes", | |
2327 | msg_len, payload->size); | |
1c20f0e2 JD |
2328 | ret = -1; |
2329 | goto end_no_session; | |
2330 | } | |
5312a3ed JG |
2331 | memcpy(&index_info, payload->data, msg_len); |
2332 | index_info.relay_stream_id = be64toh(index_info.relay_stream_id); | |
2333 | index_info.net_seq_num = be64toh(index_info.net_seq_num); | |
2334 | index_info.packet_size = be64toh(index_info.packet_size); | |
2335 | index_info.content_size = be64toh(index_info.content_size); | |
2336 | index_info.timestamp_begin = be64toh(index_info.timestamp_begin); | |
2337 | index_info.timestamp_end = be64toh(index_info.timestamp_end); | |
2338 | index_info.events_discarded = be64toh(index_info.events_discarded); | |
2339 | index_info.stream_id = be64toh(index_info.stream_id); | |
81df238b JR |
2340 | |
2341 | if (conn->minor >= 8) { | |
2342 | index_info.stream_instance_id = | |
2343 | be64toh(index_info.stream_instance_id); | |
2344 | index_info.packet_seq_num = be64toh(index_info.packet_seq_num); | |
0f83d1cc MD |
2345 | } else { |
2346 | index_info.stream_instance_id = -1ULL; | |
2347 | index_info.packet_seq_num = -1ULL; | |
81df238b | 2348 | } |
5312a3ed JG |
2349 | |
2350 | stream = stream_get_by_id(index_info.relay_stream_id); | |
1c20f0e2 | 2351 | if (!stream) { |
7591bab1 | 2352 | ERR("stream_get_by_id not found"); |
1c20f0e2 | 2353 | ret = -1; |
7591bab1 | 2354 | goto end; |
1c20f0e2 | 2355 | } |
d3e2ba59 | 2356 | |
c35f9726 JG |
2357 | pthread_mutex_lock(&stream->lock); |
2358 | ret = stream_add_index(stream, &index_info); | |
2359 | pthread_mutex_unlock(&stream->lock); | |
2360 | if (ret) { | |
7591bab1 MD |
2361 | goto end_stream_put; |
2362 | } | |
1c20f0e2 | 2363 | |
7591bab1 | 2364 | end_stream_put: |
7591bab1 | 2365 | stream_put(stream); |
7591bab1 | 2366 | end: |
53efb85a | 2367 | memset(&reply, 0, sizeof(reply)); |
1c20f0e2 JD |
2368 | if (ret < 0) { |
2369 | reply.ret_code = htobe32(LTTNG_ERR_UNK); | |
2370 | } else { | |
2371 | reply.ret_code = htobe32(LTTNG_OK); | |
2372 | } | |
58eb9381 | 2373 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
5312a3ed JG |
2374 | if (send_ret < (ssize_t) sizeof(reply)) { |
2375 | ERR("Failed to send \"recv index\" command reply (ret = %zd)", send_ret); | |
2376 | ret = -1; | |
1c20f0e2 JD |
2377 | } |
2378 | ||
2379 | end_no_session: | |
2380 | return ret; | |
2381 | } | |
2382 | ||
a4baae1b JD |
2383 | /* |
2384 | * Receive the streams_sent message. | |
2385 | * | |
2386 | * Return 0 on success else a negative value. | |
2387 | */ | |
f46376a1 MJ |
2388 | static int relay_streams_sent( |
2389 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
5312a3ed | 2390 | struct relay_connection *conn, |
f46376a1 | 2391 | const struct lttng_buffer_view *payload __attribute__((unused))) |
a4baae1b | 2392 | { |
5312a3ed JG |
2393 | int ret; |
2394 | ssize_t send_ret; | |
a4baae1b JD |
2395 | struct lttcomm_relayd_generic_reply reply; |
2396 | ||
a0377dfe | 2397 | LTTNG_ASSERT(conn); |
a4baae1b JD |
2398 | |
2399 | DBG("Relay receiving streams_sent"); | |
2400 | ||
5312a3ed | 2401 | if (!conn->session || !conn->version_check_done) { |
a4baae1b JD |
2402 | ERR("Trying to close a stream before version check"); |
2403 | ret = -1; | |
2404 | goto end_no_session; | |
2405 | } | |
2406 | ||
2407 | /* | |
7591bab1 MD |
2408 | * Publish every pending stream in the connection recv list which are |
2409 | * now ready to be used by the viewer. | |
4a9daf17 | 2410 | */ |
7591bab1 | 2411 | publish_connection_local_streams(conn); |
4a9daf17 | 2412 | |
53efb85a | 2413 | memset(&reply, 0, sizeof(reply)); |
a4baae1b | 2414 | reply.ret_code = htobe32(LTTNG_OK); |
58eb9381 | 2415 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
5312a3ed JG |
2416 | if (send_ret < (ssize_t) sizeof(reply)) { |
2417 | ERR("Failed to send \"streams sent\" command reply (ret = %zd)", | |
2418 | send_ret); | |
2419 | ret = -1; | |
a4baae1b JD |
2420 | } else { |
2421 | /* Success. */ | |
2422 | ret = 0; | |
2423 | } | |
2424 | ||
2425 | end_no_session: | |
2426 | return ret; | |
2427 | } | |
2428 | ||
ce9dbd47 JG |
2429 | static ssize_t relay_unpack_rotate_streams_header( |
2430 | const struct lttng_buffer_view *payload, | |
2431 | struct lttcomm_relayd_rotate_streams *_rotate_streams) | |
2432 | { | |
2433 | struct lttcomm_relayd_rotate_streams rotate_streams; | |
2434 | /* | |
2435 | * Set to the smallest version (packed) of `lttcomm_relayd_rotate_streams`. | |
2436 | * This is the smallest version of this structure, but it can be larger; | |
2437 | * this variable is updated once the proper size of the structure is known. | |
2438 | * | |
2439 | * See comment at the declaration of this structure for more information. | |
2440 | */ | |
2441 | ssize_t header_len = sizeof(struct lttcomm_relayd_rotate_streams_packed); | |
2442 | size_t expected_payload_size_no_padding, | |
2443 | expected_payload_size_3_bytes_padding, | |
2444 | expected_payload_size_7_bytes_padding; | |
2445 | ||
2446 | if (payload->size < header_len) { | |
2447 | ERR("Unexpected payload size in \"relay_rotate_session_stream\": expected >= %zu bytes, got %zu bytes", | |
2448 | header_len, payload->size); | |
2449 | goto error; | |
2450 | } | |
2451 | ||
2452 | /* | |
2453 | * Some versions incorrectly omitted the LTTNG_PACKED annotation on the | |
2454 | * `new_chunk_id` optional field of struct lttcomm_relayd_rotate_streams. | |
2455 | * | |
2456 | * We start by "unpacking" `stream_count` to figure out the padding length | |
2457 | * emited by our peer. | |
2458 | */ | |
11bcbf89 JG |
2459 | { |
2460 | decltype(rotate_streams.stream_count) stream_count; | |
2461 | ||
2462 | memcpy(&stream_count, payload->data, sizeof(stream_count)); | |
2463 | rotate_streams.stream_count = be32toh(stream_count); | |
2464 | } | |
2465 | ||
2466 | rotate_streams.new_chunk_id = LTTNG_OPTIONAL_INIT_UNSET; | |
ce9dbd47 JG |
2467 | |
2468 | /* | |
2469 | * Payload size expected given the possible padding lengths in | |
2470 | * `struct lttcomm_relayd_rotate_streams`. | |
2471 | */ | |
2472 | expected_payload_size_no_padding = (rotate_streams.stream_count * | |
2473 | sizeof(*rotate_streams.rotation_positions)) + | |
2474 | sizeof(lttcomm_relayd_rotate_streams_packed); | |
2475 | expected_payload_size_3_bytes_padding = (rotate_streams.stream_count * | |
2476 | sizeof(*rotate_streams.rotation_positions)) + | |
2477 | sizeof(lttcomm_relayd_rotate_streams_3_bytes_padding); | |
2478 | expected_payload_size_7_bytes_padding = (rotate_streams.stream_count * | |
2479 | sizeof(*rotate_streams.rotation_positions)) + | |
2480 | sizeof(lttcomm_relayd_rotate_streams_7_bytes_padding); | |
2481 | ||
2482 | if (payload->size == expected_payload_size_no_padding) { | |
2483 | struct lttcomm_relayd_rotate_streams_packed packed_rotate_streams; | |
2484 | ||
2485 | /* | |
2486 | * This handles cases where someone might build with | |
2487 | * -fpack-struct or any other toolchain that wouldn't produce | |
2488 | * padding to align `value`. | |
2489 | */ | |
2490 | DBG("Received `struct lttcomm_relayd_rotate_streams` with no padding"); | |
2491 | ||
2492 | header_len = sizeof(packed_rotate_streams); | |
2493 | memcpy(&packed_rotate_streams, payload->data, header_len); | |
2494 | ||
2495 | /* Unpack the packed structure to the natively-packed version. */ | |
11bcbf89 JG |
2496 | _rotate_streams->new_chunk_id = (typeof(_rotate_streams->new_chunk_id)){ |
2497 | .is_set = !!packed_rotate_streams.new_chunk_id.is_set, | |
2498 | .value = be64toh(packed_rotate_streams.new_chunk_id.value), | |
ce9dbd47 | 2499 | }; |
11bcbf89 | 2500 | _rotate_streams->stream_count = be32toh(packed_rotate_streams.stream_count); |
ce9dbd47 JG |
2501 | } else if (payload->size == expected_payload_size_3_bytes_padding) { |
2502 | struct lttcomm_relayd_rotate_streams_3_bytes_padding padded_rotate_streams; | |
2503 | ||
2504 | DBG("Received `struct lttcomm_relayd_rotate_streams` with 3 bytes of padding (4-byte aligned peer)"); | |
2505 | ||
2506 | header_len = sizeof(padded_rotate_streams); | |
2507 | memcpy(&padded_rotate_streams, payload->data, header_len); | |
2508 | ||
2509 | /* Unpack the 3-byte padded structure to the natively-packed version. */ | |
11bcbf89 JG |
2510 | _rotate_streams->new_chunk_id = (typeof(_rotate_streams->new_chunk_id)){ |
2511 | .is_set = !!padded_rotate_streams.new_chunk_id.is_set, | |
2512 | .value = be64toh(padded_rotate_streams.new_chunk_id.value), | |
ce9dbd47 | 2513 | }; |
11bcbf89 | 2514 | _rotate_streams->stream_count = be32toh(padded_rotate_streams.stream_count); |
ce9dbd47 JG |
2515 | } else if (payload->size == expected_payload_size_7_bytes_padding) { |
2516 | struct lttcomm_relayd_rotate_streams_7_bytes_padding padded_rotate_streams; | |
2517 | ||
2518 | DBG("Received `struct lttcomm_relayd_rotate_streams` with 7 bytes of padding (8-byte aligned peer)"); | |
2519 | ||
2520 | header_len = sizeof(padded_rotate_streams); | |
2521 | memcpy(&padded_rotate_streams, payload->data, header_len); | |
2522 | ||
2523 | /* Unpack the 7-byte padded structure to the natively-packed version. */ | |
11bcbf89 JG |
2524 | _rotate_streams->new_chunk_id = (typeof(_rotate_streams->new_chunk_id)){ |
2525 | .is_set = !!padded_rotate_streams.new_chunk_id.is_set, | |
2526 | .value = be64toh(padded_rotate_streams.new_chunk_id.value), | |
ce9dbd47 | 2527 | }; |
11bcbf89 | 2528 | _rotate_streams->stream_count = be32toh(padded_rotate_streams.stream_count); |
ce9dbd47 JG |
2529 | |
2530 | header_len = sizeof(padded_rotate_streams); | |
2531 | } else { | |
2532 | ERR("Unexpected payload size in \"relay_rotate_session_stream\": expected %zu, %zu or %zu bytes, got %zu bytes", | |
2533 | expected_payload_size_no_padding, | |
2534 | expected_payload_size_3_bytes_padding, | |
2535 | expected_payload_size_7_bytes_padding, | |
2536 | payload->size); | |
2537 | goto error; | |
2538 | } | |
2539 | ||
2540 | return header_len; | |
2541 | error: | |
2542 | return -1; | |
2543 | } | |
2544 | ||
d3ecc550 | 2545 | /* |
c35f9726 JG |
2546 | * relay_rotate_session_stream: rotate a stream to a new tracefile for the |
2547 | * session rotation feature (not the tracefile rotation feature). | |
d3ecc550 | 2548 | */ |
c35f9726 | 2549 | static int relay_rotate_session_streams( |
f46376a1 | 2550 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), |
5312a3ed JG |
2551 | struct relay_connection *conn, |
2552 | const struct lttng_buffer_view *payload) | |
d3ecc550 | 2553 | { |
30b9d5ab | 2554 | int ret = 0; |
c35f9726 | 2555 | uint32_t i; |
5312a3ed | 2556 | ssize_t send_ret; |
c35f9726 | 2557 | enum lttng_error_code reply_code = LTTNG_ERR_UNK; |
d3ecc550 | 2558 | struct relay_session *session = conn->session; |
c35f9726 JG |
2559 | struct lttcomm_relayd_rotate_streams rotate_streams; |
2560 | struct lttcomm_relayd_generic_reply reply = {}; | |
2561 | struct relay_stream *stream = NULL; | |
c35f9726 JG |
2562 | struct lttng_trace_chunk *next_trace_chunk = NULL; |
2563 | struct lttng_buffer_view stream_positions; | |
70626904 JG |
2564 | char chunk_id_buf[MAX_INT_DEC_LEN(uint64_t)]; |
2565 | const char *chunk_id_str = "none"; | |
ce9dbd47 | 2566 | ssize_t header_len; |
d3ecc550 | 2567 | |
d3ecc550 JD |
2568 | if (!session || !conn->version_check_done) { |
2569 | ERR("Trying to rotate a stream before version check"); | |
2570 | ret = -1; | |
2571 | goto end_no_reply; | |
2572 | } | |
2573 | ||
2574 | if (session->major == 2 && session->minor < 11) { | |
2575 | ERR("Unsupported feature before 2.11"); | |
2576 | ret = -1; | |
2577 | goto end_no_reply; | |
2578 | } | |
2579 | ||
ce9dbd47 JG |
2580 | header_len = relay_unpack_rotate_streams_header(payload, &rotate_streams); |
2581 | if (header_len < 0) { | |
d3ecc550 JD |
2582 | ret = -1; |
2583 | goto end_no_reply; | |
2584 | } | |
2585 | ||
c35f9726 JG |
2586 | if (rotate_streams.new_chunk_id.is_set) { |
2587 | /* | |
2588 | * Retrieve the trace chunk the stream must transition to. As | |
2589 | * per the protocol, this chunk should have been created | |
2590 | * before this command is received. | |
2591 | */ | |
2592 | next_trace_chunk = sessiond_trace_chunk_registry_get_chunk( | |
2593 | sessiond_trace_chunk_registry, | |
c5c79321 JG |
2594 | session->sessiond_uuid, |
2595 | conn->session->id_sessiond.is_set ? | |
2596 | conn->session->id_sessiond.value : | |
2597 | conn->session->id, | |
c35f9726 JG |
2598 | rotate_streams.new_chunk_id.value); |
2599 | if (!next_trace_chunk) { | |
c70636a7 | 2600 | char uuid_str[LTTNG_UUID_STR_LEN]; |
c35f9726 JG |
2601 | |
2602 | lttng_uuid_to_str(session->sessiond_uuid, uuid_str); | |
2603 | ERR("Unknown next trace chunk in ROTATE_STREAMS command: sessiond_uuid = {%s}, session_id = %" PRIu64 | |
2604 | ", trace_chunk_id = %" PRIu64, | |
2605 | uuid_str, session->id, | |
2606 | rotate_streams.new_chunk_id.value); | |
2607 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
2608 | ret = -1; | |
2609 | goto end; | |
2610 | } | |
70626904 JG |
2611 | |
2612 | ret = snprintf(chunk_id_buf, sizeof(chunk_id_buf), "%" PRIu64, | |
2613 | rotate_streams.new_chunk_id.value); | |
2614 | if (ret < 0 || ret >= sizeof(chunk_id_buf)) { | |
2615 | chunk_id_str = "formatting error"; | |
2616 | } else { | |
2617 | chunk_id_str = chunk_id_buf; | |
2618 | } | |
d3ecc550 JD |
2619 | } |
2620 | ||
70626904 JG |
2621 | DBG("Rotate %" PRIu32 " streams of session \"%s\" to chunk \"%s\"", |
2622 | rotate_streams.stream_count, session->session_name, | |
2623 | chunk_id_str); | |
2624 | ||
c35f9726 | 2625 | stream_positions = lttng_buffer_view_from_view(payload, |
ce9dbd47 | 2626 | header_len, -1); |
c35f9726 JG |
2627 | if (!stream_positions.data || |
2628 | stream_positions.size < | |
2629 | (rotate_streams.stream_count * | |
2630 | sizeof(struct lttcomm_relayd_stream_rotation_position))) { | |
2631 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
d3ecc550 | 2632 | ret = -1; |
5312a3ed | 2633 | goto end; |
d3ecc550 JD |
2634 | } |
2635 | ||
c35f9726 JG |
2636 | for (i = 0; i < rotate_streams.stream_count; i++) { |
2637 | struct lttcomm_relayd_stream_rotation_position *position_comm = | |
2638 | &((typeof(position_comm)) stream_positions.data)[i]; | |
2639 | const struct lttcomm_relayd_stream_rotation_position pos = { | |
2640 | .stream_id = be64toh(position_comm->stream_id), | |
2641 | .rotate_at_seq_num = be64toh( | |
2642 | position_comm->rotate_at_seq_num), | |
2643 | }; | |
5312a3ed | 2644 | |
c35f9726 JG |
2645 | stream = stream_get_by_id(pos.stream_id); |
2646 | if (!stream) { | |
2647 | reply_code = LTTNG_ERR_INVALID; | |
2648 | ret = -1; | |
2649 | goto end; | |
c6db3843 JG |
2650 | } |
2651 | ||
c35f9726 JG |
2652 | pthread_mutex_lock(&stream->lock); |
2653 | ret = stream_set_pending_rotation(stream, next_trace_chunk, | |
2654 | pos.rotate_at_seq_num); | |
2655 | pthread_mutex_unlock(&stream->lock); | |
2656 | if (ret) { | |
2657 | reply_code = LTTNG_ERR_FILE_CREATION_ERROR; | |
2658 | goto end; | |
c6db3843 | 2659 | } |
c35f9726 JG |
2660 | |
2661 | stream_put(stream); | |
2662 | stream = NULL; | |
d3ecc550 JD |
2663 | } |
2664 | ||
c35f9726 | 2665 | reply_code = LTTNG_OK; |
eaeb64a9 | 2666 | ret = 0; |
d3ecc550 | 2667 | end: |
c35f9726 JG |
2668 | if (stream) { |
2669 | stream_put(stream); | |
d3ecc550 | 2670 | } |
c35f9726 JG |
2671 | |
2672 | reply.ret_code = htobe32((uint32_t) reply_code); | |
d3ecc550 JD |
2673 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
2674 | sizeof(struct lttcomm_relayd_generic_reply), 0); | |
5312a3ed JG |
2675 | if (send_ret < (ssize_t) sizeof(reply)) { |
2676 | ERR("Failed to send \"rotate session stream\" command reply (ret = %zd)", | |
2677 | send_ret); | |
2678 | ret = -1; | |
d3ecc550 | 2679 | } |
d3ecc550 | 2680 | end_no_reply: |
c35f9726 | 2681 | lttng_trace_chunk_put(next_trace_chunk); |
d3ecc550 JD |
2682 | return ret; |
2683 | } | |
2684 | ||
e5add6d0 JG |
2685 | /* |
2686 | * relay_create_trace_chunk: create a new trace chunk | |
2687 | */ | |
f46376a1 MJ |
2688 | static int relay_create_trace_chunk( |
2689 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
e5add6d0 JG |
2690 | struct relay_connection *conn, |
2691 | const struct lttng_buffer_view *payload) | |
2692 | { | |
2693 | int ret = 0; | |
2694 | ssize_t send_ret; | |
2695 | struct relay_session *session = conn->session; | |
2696 | struct lttcomm_relayd_create_trace_chunk *msg; | |
2697 | struct lttcomm_relayd_generic_reply reply = {}; | |
2698 | struct lttng_buffer_view header_view; | |
e5add6d0 JG |
2699 | struct lttng_trace_chunk *chunk = NULL, *published_chunk = NULL; |
2700 | enum lttng_error_code reply_code = LTTNG_OK; | |
2701 | enum lttng_trace_chunk_status chunk_status; | |
a7ceb342 | 2702 | const char *new_path; |
e5add6d0 JG |
2703 | |
2704 | if (!session || !conn->version_check_done) { | |
2705 | ERR("Trying to create a trace chunk before version check"); | |
2706 | ret = -1; | |
2707 | goto end_no_reply; | |
2708 | } | |
2709 | ||
2710 | if (session->major == 2 && session->minor < 11) { | |
2711 | ERR("Chunk creation command is unsupported before 2.11"); | |
2712 | ret = -1; | |
2713 | goto end_no_reply; | |
2714 | } | |
2715 | ||
2716 | header_view = lttng_buffer_view_from_view(payload, 0, sizeof(*msg)); | |
3e6e0df2 | 2717 | if (!lttng_buffer_view_is_valid(&header_view)) { |
e5add6d0 JG |
2718 | ERR("Failed to receive payload of chunk creation command"); |
2719 | ret = -1; | |
2720 | goto end_no_reply; | |
2721 | } | |
2722 | ||
2723 | /* Convert to host endianness. */ | |
2724 | msg = (typeof(msg)) header_view.data; | |
2725 | msg->chunk_id = be64toh(msg->chunk_id); | |
2726 | msg->creation_timestamp = be64toh(msg->creation_timestamp); | |
2727 | msg->override_name_length = be32toh(msg->override_name_length); | |
2728 | ||
8cd15f6a MD |
2729 | pthread_mutex_lock(&conn->session->lock); |
2730 | session->ongoing_rotation = true; | |
a7ceb342 MD |
2731 | if (session->current_trace_chunk && |
2732 | !lttng_trace_chunk_get_name_overridden(session->current_trace_chunk)) { | |
2733 | chunk_status = lttng_trace_chunk_rename_path(session->current_trace_chunk, | |
2734 | DEFAULT_CHUNK_TMP_OLD_DIRECTORY); | |
2735 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2736 | ERR("Failed to rename old chunk"); | |
2737 | ret = -1; | |
2738 | reply_code = LTTNG_ERR_UNK; | |
2739 | goto end; | |
2740 | } | |
2741 | } | |
a7ceb342 MD |
2742 | if (!session->current_trace_chunk) { |
2743 | if (!session->has_rotated) { | |
2744 | new_path = ""; | |
2745 | } else { | |
2746 | new_path = NULL; | |
2747 | } | |
2748 | } else { | |
2749 | new_path = DEFAULT_CHUNK_TMP_NEW_DIRECTORY; | |
2750 | } | |
e5add6d0 | 2751 | chunk = lttng_trace_chunk_create( |
a7ceb342 | 2752 | msg->chunk_id, msg->creation_timestamp, new_path); |
e5add6d0 JG |
2753 | if (!chunk) { |
2754 | ERR("Failed to create trace chunk in trace chunk creation command"); | |
2755 | ret = -1; | |
2756 | reply_code = LTTNG_ERR_NOMEM; | |
2757 | goto end; | |
2758 | } | |
7145f5e9 | 2759 | lttng_trace_chunk_set_fd_tracker(chunk, the_fd_tracker); |
e5add6d0 JG |
2760 | |
2761 | if (msg->override_name_length) { | |
2762 | const char *name; | |
3e6e0df2 JG |
2763 | const struct lttng_buffer_view chunk_name_view = |
2764 | lttng_buffer_view_from_view(payload, | |
2765 | sizeof(*msg), | |
2766 | msg->override_name_length); | |
2767 | ||
2768 | if (!lttng_buffer_view_is_valid(&chunk_name_view)) { | |
2769 | ERR("Invalid payload of chunk creation command (protocol error): buffer too short for expected name length"); | |
2770 | ret = -1; | |
2771 | reply_code = LTTNG_ERR_INVALID; | |
2772 | goto end; | |
2773 | } | |
e5add6d0 | 2774 | |
e5add6d0 | 2775 | name = chunk_name_view.data; |
3e6e0df2 JG |
2776 | if (name[msg->override_name_length - 1]) { |
2777 | ERR("Invalid payload of chunk creation command (protocol error): name is not null-terminated"); | |
e5add6d0 JG |
2778 | ret = -1; |
2779 | reply_code = LTTNG_ERR_INVALID; | |
2780 | goto end; | |
2781 | } | |
2782 | ||
2783 | chunk_status = lttng_trace_chunk_override_name( | |
2784 | chunk, chunk_name_view.data); | |
2785 | switch (chunk_status) { | |
2786 | case LTTNG_TRACE_CHUNK_STATUS_OK: | |
2787 | break; | |
2788 | case LTTNG_TRACE_CHUNK_STATUS_INVALID_ARGUMENT: | |
2789 | ERR("Failed to set the name of new trace chunk in trace chunk creation command (invalid name)"); | |
2790 | reply_code = LTTNG_ERR_INVALID; | |
2791 | ret = -1; | |
2792 | goto end; | |
2793 | default: | |
2794 | ERR("Failed to set the name of new trace chunk in trace chunk creation command (unknown error)"); | |
2795 | reply_code = LTTNG_ERR_UNK; | |
2796 | ret = -1; | |
2797 | goto end; | |
2798 | } | |
2799 | } | |
2800 | ||
e5add6d0 JG |
2801 | chunk_status = lttng_trace_chunk_set_credentials_current_user(chunk); |
2802 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2803 | reply_code = LTTNG_ERR_UNK; | |
2804 | ret = -1; | |
2805 | goto end; | |
2806 | } | |
2807 | ||
a0377dfe | 2808 | LTTNG_ASSERT(conn->session->output_directory); |
7ceefac4 JG |
2809 | chunk_status = lttng_trace_chunk_set_as_owner(chunk, |
2810 | conn->session->output_directory); | |
e5add6d0 JG |
2811 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
2812 | reply_code = LTTNG_ERR_UNK; | |
2813 | ret = -1; | |
2814 | goto end; | |
2815 | } | |
2816 | ||
2817 | published_chunk = sessiond_trace_chunk_registry_publish_chunk( | |
2818 | sessiond_trace_chunk_registry, | |
2819 | conn->session->sessiond_uuid, | |
c5c79321 JG |
2820 | conn->session->id_sessiond.is_set ? |
2821 | conn->session->id_sessiond.value : | |
2822 | conn->session->id, | |
e5add6d0 JG |
2823 | chunk); |
2824 | if (!published_chunk) { | |
c70636a7 | 2825 | char uuid_str[LTTNG_UUID_STR_LEN]; |
e5add6d0 JG |
2826 | |
2827 | lttng_uuid_to_str(conn->session->sessiond_uuid, uuid_str); | |
2828 | ERR("Failed to publish chunk: sessiond_uuid = %s, session_id = %" PRIu64 ", chunk_id = %" PRIu64, | |
2829 | uuid_str, | |
2830 | conn->session->id, | |
2831 | msg->chunk_id); | |
2832 | ret = -1; | |
2833 | reply_code = LTTNG_ERR_NOMEM; | |
2834 | goto end; | |
2835 | } | |
2836 | ||
62bad3bf JG |
2837 | if (conn->session->pending_closure_trace_chunk) { |
2838 | /* | |
2839 | * Invalid; this means a second create_trace_chunk command was | |
2840 | * received before a close_trace_chunk. | |
2841 | */ | |
2842 | ERR("Invalid trace chunk close command received; a trace chunk is already waiting for a trace chunk close command"); | |
2843 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
2844 | ret = -1; | |
8cd15f6a | 2845 | goto end; |
62bad3bf JG |
2846 | } |
2847 | conn->session->pending_closure_trace_chunk = | |
2848 | conn->session->current_trace_chunk; | |
e5add6d0 | 2849 | conn->session->current_trace_chunk = published_chunk; |
e5add6d0 | 2850 | published_chunk = NULL; |
a7ceb342 MD |
2851 | if (!conn->session->pending_closure_trace_chunk) { |
2852 | session->ongoing_rotation = false; | |
2853 | } | |
e5add6d0 | 2854 | end: |
8cd15f6a | 2855 | pthread_mutex_unlock(&conn->session->lock); |
e5add6d0 JG |
2856 | reply.ret_code = htobe32((uint32_t) reply_code); |
2857 | send_ret = conn->sock->ops->sendmsg(conn->sock, | |
2858 | &reply, | |
2859 | sizeof(struct lttcomm_relayd_generic_reply), | |
2860 | 0); | |
2861 | if (send_ret < (ssize_t) sizeof(reply)) { | |
2862 | ERR("Failed to send \"create trace chunk\" command reply (ret = %zd)", | |
2863 | send_ret); | |
2864 | ret = -1; | |
2865 | } | |
2866 | end_no_reply: | |
2867 | lttng_trace_chunk_put(chunk); | |
2868 | lttng_trace_chunk_put(published_chunk); | |
e5add6d0 JG |
2869 | return ret; |
2870 | } | |
2871 | ||
bbc4768c JG |
2872 | /* |
2873 | * relay_close_trace_chunk: close a trace chunk | |
2874 | */ | |
f46376a1 MJ |
2875 | static int relay_close_trace_chunk( |
2876 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
bbc4768c JG |
2877 | struct relay_connection *conn, |
2878 | const struct lttng_buffer_view *payload) | |
2879 | { | |
9898f786 | 2880 | int ret = 0, buf_ret; |
bbc4768c JG |
2881 | ssize_t send_ret; |
2882 | struct relay_session *session = conn->session; | |
2883 | struct lttcomm_relayd_close_trace_chunk *msg; | |
ecd1a12f | 2884 | struct lttcomm_relayd_close_trace_chunk_reply reply = {}; |
bbc4768c JG |
2885 | struct lttng_buffer_view header_view; |
2886 | struct lttng_trace_chunk *chunk = NULL; | |
2887 | enum lttng_error_code reply_code = LTTNG_OK; | |
2888 | enum lttng_trace_chunk_status chunk_status; | |
2889 | uint64_t chunk_id; | |
c35f9726 | 2890 | LTTNG_OPTIONAL(enum lttng_trace_chunk_command_type) close_command = {}; |
bbc4768c | 2891 | time_t close_timestamp; |
ecd1a12f MD |
2892 | char closed_trace_chunk_path[LTTNG_PATH_MAX]; |
2893 | size_t path_length = 0; | |
2894 | const char *chunk_name = NULL; | |
2895 | struct lttng_dynamic_buffer reply_payload; | |
a7ceb342 | 2896 | const char *new_path; |
ecd1a12f MD |
2897 | |
2898 | lttng_dynamic_buffer_init(&reply_payload); | |
bbc4768c JG |
2899 | |
2900 | if (!session || !conn->version_check_done) { | |
2901 | ERR("Trying to close a trace chunk before version check"); | |
2902 | ret = -1; | |
2903 | goto end_no_reply; | |
2904 | } | |
2905 | ||
2906 | if (session->major == 2 && session->minor < 11) { | |
2907 | ERR("Chunk close command is unsupported before 2.11"); | |
2908 | ret = -1; | |
2909 | goto end_no_reply; | |
2910 | } | |
2911 | ||
2912 | header_view = lttng_buffer_view_from_view(payload, 0, sizeof(*msg)); | |
3e6e0df2 | 2913 | if (!lttng_buffer_view_is_valid(&header_view)) { |
bbc4768c JG |
2914 | ERR("Failed to receive payload of chunk close command"); |
2915 | ret = -1; | |
2916 | goto end_no_reply; | |
2917 | } | |
2918 | ||
2919 | /* Convert to host endianness. */ | |
2920 | msg = (typeof(msg)) header_view.data; | |
2921 | chunk_id = be64toh(msg->chunk_id); | |
2922 | close_timestamp = (time_t) be64toh(msg->close_timestamp); | |
ac497a37 SM |
2923 | close_command.value = (lttng_trace_chunk_command_type) be32toh(msg->close_command.value); |
2924 | close_command.is_set = msg->close_command.is_set; | |
bbc4768c JG |
2925 | |
2926 | chunk = sessiond_trace_chunk_registry_get_chunk( | |
2927 | sessiond_trace_chunk_registry, | |
2928 | conn->session->sessiond_uuid, | |
c5c79321 JG |
2929 | conn->session->id_sessiond.is_set ? |
2930 | conn->session->id_sessiond.value : | |
2931 | conn->session->id, | |
bbc4768c JG |
2932 | chunk_id); |
2933 | if (!chunk) { | |
c70636a7 | 2934 | char uuid_str[LTTNG_UUID_STR_LEN]; |
bbc4768c JG |
2935 | |
2936 | lttng_uuid_to_str(conn->session->sessiond_uuid, uuid_str); | |
2937 | ERR("Failed to find chunk to close: sessiond_uuid = %s, session_id = %" PRIu64 ", chunk_id = %" PRIu64, | |
2938 | uuid_str, | |
2939 | conn->session->id, | |
2940 | msg->chunk_id); | |
2941 | ret = -1; | |
2942 | reply_code = LTTNG_ERR_NOMEM; | |
2943 | goto end; | |
2944 | } | |
2945 | ||
62bad3bf | 2946 | pthread_mutex_lock(&session->lock); |
f77a6ec2 MD |
2947 | if (close_command.is_set && |
2948 | close_command.value == LTTNG_TRACE_CHUNK_COMMAND_TYPE_DELETE) { | |
2949 | /* | |
2950 | * Clear command. It is a protocol error to ask for a | |
2951 | * clear on a relay which does not allow it. Querying | |
2952 | * the configuration allows figuring out whether | |
2953 | * clearing is allowed before doing the clear. | |
2954 | */ | |
2955 | if (!opt_allow_clear) { | |
2956 | ret = -1; | |
2957 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
2958 | goto end_unlock_session; | |
2959 | } | |
2960 | } | |
62bad3bf JG |
2961 | if (session->pending_closure_trace_chunk && |
2962 | session->pending_closure_trace_chunk != chunk) { | |
2963 | ERR("Trace chunk close command for session \"%s\" does not target the trace chunk pending closure", | |
2964 | session->session_name); | |
2965 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
2966 | ret = -1; | |
2967 | goto end_unlock_session; | |
2968 | } | |
2969 | ||
a7ceb342 MD |
2970 | if (session->current_trace_chunk && session->current_trace_chunk != chunk && |
2971 | !lttng_trace_chunk_get_name_overridden(session->current_trace_chunk)) { | |
2972 | if (close_command.is_set && | |
2973 | close_command.value == LTTNG_TRACE_CHUNK_COMMAND_TYPE_DELETE && | |
2974 | !session->has_rotated) { | |
2975 | /* New chunk stays in session output directory. */ | |
2976 | new_path = ""; | |
2977 | } else { | |
2978 | /* Use chunk name for new chunk. */ | |
2979 | new_path = NULL; | |
2980 | } | |
2981 | /* Rename new chunk path. */ | |
2982 | chunk_status = lttng_trace_chunk_rename_path(session->current_trace_chunk, | |
2983 | new_path); | |
2984 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2985 | ret = -1; | |
88188199 | 2986 | goto end_unlock_session; |
a7ceb342 MD |
2987 | } |
2988 | session->ongoing_rotation = false; | |
2989 | } | |
2990 | if ((!close_command.is_set || | |
2991 | close_command.value == LTTNG_TRACE_CHUNK_COMMAND_TYPE_NO_OPERATION) && | |
2992 | !lttng_trace_chunk_get_name_overridden(chunk)) { | |
2993 | const char *old_path; | |
2994 | ||
2995 | if (!session->has_rotated) { | |
2996 | old_path = ""; | |
2997 | } else { | |
2998 | old_path = NULL; | |
2999 | } | |
3000 | /* We need to move back the .tmp_old_chunk to its rightful place. */ | |
3001 | chunk_status = lttng_trace_chunk_rename_path(chunk, old_path); | |
3002 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
3003 | ret = -1; | |
88188199 | 3004 | goto end_unlock_session; |
a7ceb342 MD |
3005 | } |
3006 | } | |
bbc4768c JG |
3007 | chunk_status = lttng_trace_chunk_set_close_timestamp( |
3008 | chunk, close_timestamp); | |
3009 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
3010 | ERR("Failed to set trace chunk close timestamp"); | |
3011 | ret = -1; | |
3012 | reply_code = LTTNG_ERR_UNK; | |
62bad3bf | 3013 | goto end_unlock_session; |
bbc4768c JG |
3014 | } |
3015 | ||
3016 | if (close_command.is_set) { | |
3017 | chunk_status = lttng_trace_chunk_set_close_command( | |
3018 | chunk, close_command.value); | |
3019 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
3020 | ret = -1; | |
3021 | reply_code = LTTNG_ERR_INVALID; | |
62bad3bf | 3022 | goto end_unlock_session; |
bbc4768c JG |
3023 | } |
3024 | } | |
ecd1a12f MD |
3025 | chunk_status = lttng_trace_chunk_get_name(chunk, &chunk_name, NULL); |
3026 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
3027 | ERR("Failed to get chunk name"); | |
3028 | ret = -1; | |
3029 | reply_code = LTTNG_ERR_UNK; | |
3030 | goto end_unlock_session; | |
3031 | } | |
3032 | if (!session->has_rotated && !session->snapshot) { | |
3033 | ret = lttng_strncpy(closed_trace_chunk_path, | |
3034 | session->output_path, | |
3035 | sizeof(closed_trace_chunk_path)); | |
3036 | if (ret) { | |
3037 | ERR("Failed to send trace chunk path: path length of %zu bytes exceeds the maximal allowed length of %zu bytes", | |
3038 | strlen(session->output_path), | |
3039 | sizeof(closed_trace_chunk_path)); | |
3040 | reply_code = LTTNG_ERR_NOMEM; | |
3041 | ret = -1; | |
3042 | goto end_unlock_session; | |
3043 | } | |
3044 | } else { | |
3045 | if (session->snapshot) { | |
3046 | ret = snprintf(closed_trace_chunk_path, | |
3047 | sizeof(closed_trace_chunk_path), | |
3048 | "%s/%s", session->output_path, | |
3049 | chunk_name); | |
3050 | } else { | |
3051 | ret = snprintf(closed_trace_chunk_path, | |
3052 | sizeof(closed_trace_chunk_path), | |
3053 | "%s/" DEFAULT_ARCHIVED_TRACE_CHUNKS_DIRECTORY | |
3054 | "/%s", | |
3055 | session->output_path, chunk_name); | |
3056 | } | |
3057 | if (ret < 0 || ret == sizeof(closed_trace_chunk_path)) { | |
3058 | ERR("Failed to format closed trace chunk resulting path"); | |
3059 | reply_code = ret < 0 ? LTTNG_ERR_UNK : LTTNG_ERR_NOMEM; | |
3060 | ret = -1; | |
3061 | goto end_unlock_session; | |
3062 | } | |
3063 | } | |
489ea154 MD |
3064 | if (close_command.is_set && |
3065 | close_command.value == LTTNG_TRACE_CHUNK_COMMAND_TYPE_MOVE_TO_COMPLETED) { | |
3066 | session->has_rotated = true; | |
3067 | } | |
ecd1a12f MD |
3068 | DBG("Reply chunk path on close: %s", closed_trace_chunk_path); |
3069 | path_length = strlen(closed_trace_chunk_path) + 1; | |
3070 | if (path_length > UINT32_MAX) { | |
3071 | ERR("Closed trace chunk path exceeds the maximal length allowed by the protocol"); | |
3072 | ret = -1; | |
3073 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
3074 | goto end_unlock_session; | |
3075 | } | |
bbc4768c | 3076 | |
c35f9726 JG |
3077 | if (session->current_trace_chunk == chunk) { |
3078 | /* | |
3079 | * After a trace chunk close command, no new streams | |
3080 | * referencing the chunk may be created. Hence, on the | |
3081 | * event that no new trace chunk have been created for | |
3082 | * the session, the reference to the current trace chunk | |
3083 | * is released in order to allow it to be reclaimed when | |
3084 | * the last stream releases its reference to it. | |
3085 | */ | |
3086 | lttng_trace_chunk_put(session->current_trace_chunk); | |
3087 | session->current_trace_chunk = NULL; | |
3088 | } | |
62bad3bf JG |
3089 | lttng_trace_chunk_put(session->pending_closure_trace_chunk); |
3090 | session->pending_closure_trace_chunk = NULL; | |
3091 | end_unlock_session: | |
c35f9726 JG |
3092 | pthread_mutex_unlock(&session->lock); |
3093 | ||
bbc4768c | 3094 | end: |
ecd1a12f MD |
3095 | reply.generic.ret_code = htobe32((uint32_t) reply_code); |
3096 | reply.path_length = htobe32((uint32_t) path_length); | |
9898f786 | 3097 | buf_ret = lttng_dynamic_buffer_append( |
ecd1a12f | 3098 | &reply_payload, &reply, sizeof(reply)); |
9898f786 | 3099 | if (buf_ret) { |
ecd1a12f MD |
3100 | ERR("Failed to append \"close trace chunk\" command reply header to payload buffer"); |
3101 | goto end_no_reply; | |
3102 | } | |
3103 | ||
3104 | if (reply_code == LTTNG_OK) { | |
9898f786 | 3105 | buf_ret = lttng_dynamic_buffer_append(&reply_payload, |
ecd1a12f | 3106 | closed_trace_chunk_path, path_length); |
9898f786 | 3107 | if (buf_ret) { |
ecd1a12f MD |
3108 | ERR("Failed to append \"close trace chunk\" command reply path to payload buffer"); |
3109 | goto end_no_reply; | |
3110 | } | |
3111 | } | |
3112 | ||
bbc4768c | 3113 | send_ret = conn->sock->ops->sendmsg(conn->sock, |
ecd1a12f MD |
3114 | reply_payload.data, |
3115 | reply_payload.size, | |
bbc4768c | 3116 | 0); |
ecd1a12f MD |
3117 | if (send_ret < reply_payload.size) { |
3118 | ERR("Failed to send \"close trace chunk\" command reply of %zu bytes (ret = %zd)", | |
3119 | reply_payload.size, send_ret); | |
bbc4768c | 3120 | ret = -1; |
ecd1a12f | 3121 | goto end_no_reply; |
bbc4768c JG |
3122 | } |
3123 | end_no_reply: | |
3124 | lttng_trace_chunk_put(chunk); | |
ecd1a12f | 3125 | lttng_dynamic_buffer_reset(&reply_payload); |
bbc4768c JG |
3126 | return ret; |
3127 | } | |
3128 | ||
c35f9726 JG |
3129 | /* |
3130 | * relay_trace_chunk_exists: check if a trace chunk exists | |
3131 | */ | |
f46376a1 MJ |
3132 | static int relay_trace_chunk_exists( |
3133 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
c35f9726 JG |
3134 | struct relay_connection *conn, |
3135 | const struct lttng_buffer_view *payload) | |
3136 | { | |
3137 | int ret = 0; | |
3138 | ssize_t send_ret; | |
3139 | struct relay_session *session = conn->session; | |
3140 | struct lttcomm_relayd_trace_chunk_exists *msg; | |
3141 | struct lttcomm_relayd_trace_chunk_exists_reply reply = {}; | |
3142 | struct lttng_buffer_view header_view; | |
c35f9726 | 3143 | uint64_t chunk_id; |
6b584c2e | 3144 | bool chunk_exists; |
c35f9726 JG |
3145 | |
3146 | if (!session || !conn->version_check_done) { | |
0f1b1d25 | 3147 | ERR("Trying to check for the presence of a trace chunk before version check"); |
c35f9726 JG |
3148 | ret = -1; |
3149 | goto end_no_reply; | |
3150 | } | |
3151 | ||
3152 | if (session->major == 2 && session->minor < 11) { | |
8a82be4c | 3153 | ERR("Chunk exists command is unsupported before 2.11"); |
c35f9726 JG |
3154 | ret = -1; |
3155 | goto end_no_reply; | |
3156 | } | |
3157 | ||
3158 | header_view = lttng_buffer_view_from_view(payload, 0, sizeof(*msg)); | |
3e6e0df2 | 3159 | if (!lttng_buffer_view_is_valid(&header_view)) { |
8a82be4c | 3160 | ERR("Failed to receive payload of chunk exists command"); |
c35f9726 JG |
3161 | ret = -1; |
3162 | goto end_no_reply; | |
3163 | } | |
3164 | ||
3165 | /* Convert to host endianness. */ | |
3166 | msg = (typeof(msg)) header_view.data; | |
3167 | chunk_id = be64toh(msg->chunk_id); | |
3168 | ||
6b584c2e | 3169 | ret = sessiond_trace_chunk_registry_chunk_exists( |
c35f9726 JG |
3170 | sessiond_trace_chunk_registry, |
3171 | conn->session->sessiond_uuid, | |
3172 | conn->session->id, | |
6b584c2e JG |
3173 | chunk_id, &chunk_exists); |
3174 | /* | |
3175 | * If ret is not 0, send the reply and report the error to the caller. | |
3176 | * It is a protocol (or internal) error and the session/connection | |
3177 | * should be torn down. | |
3178 | */ | |
ac497a37 SM |
3179 | reply.generic.ret_code = htobe32((uint32_t) (ret == 0 ? LTTNG_OK : LTTNG_ERR_INVALID_PROTOCOL)); |
3180 | reply.trace_chunk_exists = ret == 0 ? chunk_exists : 0; | |
3181 | ||
6b584c2e JG |
3182 | send_ret = conn->sock->ops->sendmsg( |
3183 | conn->sock, &reply, sizeof(reply), 0); | |
c35f9726 JG |
3184 | if (send_ret < (ssize_t) sizeof(reply)) { |
3185 | ERR("Failed to send \"create trace chunk\" command reply (ret = %zd)", | |
3186 | send_ret); | |
3187 | ret = -1; | |
3188 | } | |
3189 | end_no_reply: | |
c35f9726 JG |
3190 | return ret; |
3191 | } | |
3192 | ||
8614e600 MD |
3193 | /* |
3194 | * relay_get_configuration: query whether feature is available | |
3195 | */ | |
f46376a1 MJ |
3196 | static int relay_get_configuration( |
3197 | const struct lttcomm_relayd_hdr *recv_hdr __attribute__((unused)), | |
8614e600 MD |
3198 | struct relay_connection *conn, |
3199 | const struct lttng_buffer_view *payload) | |
3200 | { | |
3201 | int ret = 0; | |
3202 | ssize_t send_ret; | |
3203 | struct lttcomm_relayd_get_configuration *msg; | |
3204 | struct lttcomm_relayd_get_configuration_reply reply = {}; | |
3205 | struct lttng_buffer_view header_view; | |
3206 | uint64_t query_flags = 0; | |
3207 | uint64_t result_flags = 0; | |
3208 | ||
3209 | header_view = lttng_buffer_view_from_view(payload, 0, sizeof(*msg)); | |
3e6e0df2 | 3210 | if (!lttng_buffer_view_is_valid(&header_view)) { |
8614e600 MD |
3211 | ERR("Failed to receive payload of chunk close command"); |
3212 | ret = -1; | |
3213 | goto end_no_reply; | |
3214 | } | |
3215 | ||
3216 | /* Convert to host endianness. */ | |
3217 | msg = (typeof(msg)) header_view.data; | |
3218 | query_flags = be64toh(msg->query_flags); | |
3219 | ||
3220 | if (query_flags) { | |
3221 | ret = LTTNG_ERR_INVALID_PROTOCOL; | |
3222 | goto reply; | |
3223 | } | |
3224 | if (opt_allow_clear) { | |
3225 | result_flags |= LTTCOMM_RELAYD_CONFIGURATION_FLAG_CLEAR_ALLOWED; | |
3226 | } | |
3227 | ret = 0; | |
3228 | reply: | |
ac497a37 SM |
3229 | reply.generic.ret_code = htobe32((uint32_t) (ret == 0 ? LTTNG_OK : LTTNG_ERR_INVALID_PROTOCOL)); |
3230 | reply.relayd_configuration_flags = htobe64(result_flags); | |
3231 | ||
8614e600 MD |
3232 | send_ret = conn->sock->ops->sendmsg( |
3233 | conn->sock, &reply, sizeof(reply), 0); | |
3234 | if (send_ret < (ssize_t) sizeof(reply)) { | |
3235 | ERR("Failed to send \"get configuration\" command reply (ret = %zd)", | |
3236 | send_ret); | |
3237 | ret = -1; | |
3238 | } | |
3239 | end_no_reply: | |
3240 | return ret; | |
3241 | } | |
3242 | ||
5312a3ed JG |
3243 | static int relay_process_control_command(struct relay_connection *conn, |
3244 | const struct lttcomm_relayd_hdr *header, | |
3245 | const struct lttng_buffer_view *payload) | |
b8aa1682 JD |
3246 | { |
3247 | int ret = 0; | |
3248 | ||
00e71031 FD |
3249 | DBG3("Processing \"%s\" command for socket %i", |
3250 | lttcomm_relayd_command_str((lttcomm_relayd_command) header->cmd), | |
3251 | conn->sock->fd); | |
5312a3ed | 3252 | switch (header->cmd) { |
b8aa1682 | 3253 | case RELAYD_CREATE_SESSION: |
5312a3ed | 3254 | ret = relay_create_session(header, conn, payload); |
b8aa1682 | 3255 | break; |
b8aa1682 | 3256 | case RELAYD_ADD_STREAM: |
5312a3ed | 3257 | ret = relay_add_stream(header, conn, payload); |
b8aa1682 JD |
3258 | break; |
3259 | case RELAYD_START_DATA: | |
5312a3ed | 3260 | ret = relay_start(header, conn, payload); |
b8aa1682 JD |
3261 | break; |
3262 | case RELAYD_SEND_METADATA: | |
5312a3ed | 3263 | ret = relay_recv_metadata(header, conn, payload); |
b8aa1682 JD |
3264 | break; |
3265 | case RELAYD_VERSION: | |
5312a3ed | 3266 | ret = relay_send_version(header, conn, payload); |
b8aa1682 | 3267 | break; |
173af62f | 3268 | case RELAYD_CLOSE_STREAM: |
5312a3ed | 3269 | ret = relay_close_stream(header, conn, payload); |
173af62f | 3270 | break; |
6d805429 | 3271 | case RELAYD_DATA_PENDING: |
5312a3ed | 3272 | ret = relay_data_pending(header, conn, payload); |
c8f59ee5 DG |
3273 | break; |
3274 | case RELAYD_QUIESCENT_CONTROL: | |
5312a3ed | 3275 | ret = relay_quiescent_control(header, conn, payload); |
c8f59ee5 | 3276 | break; |
f7079f67 | 3277 | case RELAYD_BEGIN_DATA_PENDING: |
5312a3ed | 3278 | ret = relay_begin_data_pending(header, conn, payload); |
f7079f67 DG |
3279 | break; |
3280 | case RELAYD_END_DATA_PENDING: | |
5312a3ed | 3281 | ret = relay_end_data_pending(header, conn, payload); |
f7079f67 | 3282 | break; |
1c20f0e2 | 3283 | case RELAYD_SEND_INDEX: |
5312a3ed | 3284 | ret = relay_recv_index(header, conn, payload); |
1c20f0e2 | 3285 | break; |
a4baae1b | 3286 | case RELAYD_STREAMS_SENT: |
5312a3ed | 3287 | ret = relay_streams_sent(header, conn, payload); |
a4baae1b | 3288 | break; |
93ec662e | 3289 | case RELAYD_RESET_METADATA: |
5312a3ed | 3290 | ret = relay_reset_metadata(header, conn, payload); |
93ec662e | 3291 | break; |
c35f9726 | 3292 | case RELAYD_ROTATE_STREAMS: |
c35f9726 | 3293 | ret = relay_rotate_session_streams(header, conn, payload); |
d3ecc550 | 3294 | break; |
e5add6d0 | 3295 | case RELAYD_CREATE_TRACE_CHUNK: |
e5add6d0 JG |
3296 | ret = relay_create_trace_chunk(header, conn, payload); |
3297 | break; | |
bbc4768c | 3298 | case RELAYD_CLOSE_TRACE_CHUNK: |
bbc4768c JG |
3299 | ret = relay_close_trace_chunk(header, conn, payload); |
3300 | break; | |
c35f9726 | 3301 | case RELAYD_TRACE_CHUNK_EXISTS: |
c35f9726 JG |
3302 | ret = relay_trace_chunk_exists(header, conn, payload); |
3303 | break; | |
8614e600 | 3304 | case RELAYD_GET_CONFIGURATION: |
8614e600 MD |
3305 | ret = relay_get_configuration(header, conn, payload); |
3306 | break; | |
b8aa1682 JD |
3307 | case RELAYD_UPDATE_SYNC_INFO: |
3308 | default: | |
5312a3ed | 3309 | ERR("Received unknown command (%u)", header->cmd); |
58eb9381 | 3310 | relay_unknown_command(conn); |
b8aa1682 JD |
3311 | ret = -1; |
3312 | goto end; | |
3313 | } | |
3314 | ||
3315 | end: | |
3316 | return ret; | |
3317 | } | |
3318 | ||
5569b118 JG |
3319 | static enum relay_connection_status relay_process_control_receive_payload( |
3320 | struct relay_connection *conn) | |
5312a3ed JG |
3321 | { |
3322 | int ret = 0; | |
5569b118 | 3323 | enum relay_connection_status status = RELAY_CONNECTION_STATUS_OK; |
5312a3ed JG |
3324 | struct lttng_dynamic_buffer *reception_buffer = |
3325 | &conn->protocol.ctrl.reception_buffer; | |
3326 | struct ctrl_connection_state_receive_payload *state = | |
3327 | &conn->protocol.ctrl.state.receive_payload; | |
3328 | struct lttng_buffer_view payload_view; | |
3329 | ||
3330 | if (state->left_to_receive == 0) { | |
3331 | /* Short-circuit for payload-less commands. */ | |
3332 | goto reception_complete; | |
3333 | } | |
3334 | ||
3335 | ret = conn->sock->ops->recvmsg(conn->sock, | |
3336 | reception_buffer->data + state->received, | |
3337 | state->left_to_receive, MSG_DONTWAIT); | |
3338 | if (ret < 0) { | |
942003e5 MJ |
3339 | DIAGNOSTIC_PUSH |
3340 | DIAGNOSTIC_IGNORE_LOGICAL_OP | |
5569b118 | 3341 | if (errno != EAGAIN && errno != EWOULDBLOCK) { |
942003e5 | 3342 | DIAGNOSTIC_POP |
5569b118 JG |
3343 | PERROR("Unable to receive command payload on sock %d", |
3344 | conn->sock->fd); | |
3345 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3346 | } | |
5312a3ed JG |
3347 | goto end; |
3348 | } else if (ret == 0) { | |
3349 | DBG("Socket %d performed an orderly shutdown (received EOF)", conn->sock->fd); | |
5569b118 | 3350 | status = RELAY_CONNECTION_STATUS_CLOSED; |
5312a3ed JG |
3351 | goto end; |
3352 | } | |
3353 | ||
a0377dfe FD |
3354 | LTTNG_ASSERT(ret > 0); |
3355 | LTTNG_ASSERT(ret <= state->left_to_receive); | |
5312a3ed JG |
3356 | |
3357 | state->left_to_receive -= ret; | |
3358 | state->received += ret; | |
3359 | ||
3360 | if (state->left_to_receive > 0) { | |
3361 | /* | |
3362 | * Can't transition to the protocol's next state, wait to | |
3363 | * receive the rest of the header. | |
3364 | */ | |
3365 | DBG3("Partial reception of control connection protocol payload (received %" PRIu64 " bytes, %" PRIu64 " bytes left to receive, fd = %i)", | |
3366 | state->received, state->left_to_receive, | |
3367 | conn->sock->fd); | |
5312a3ed JG |
3368 | goto end; |
3369 | } | |
3370 | ||
3371 | reception_complete: | |
3372 | DBG("Done receiving control command payload: fd = %i, payload size = %" PRIu64 " bytes", | |
3373 | conn->sock->fd, state->received); | |
3374 | /* | |
3375 | * The payload required to process the command has been received. | |
3376 | * A view to the reception buffer is forwarded to the various | |
3377 | * commands and the state of the control is reset on success. | |
3378 | * | |
3379 | * Commands are responsible for sending their reply to the peer. | |
3380 | */ | |
3381 | payload_view = lttng_buffer_view_from_dynamic_buffer(reception_buffer, | |
3382 | 0, -1); | |
3383 | ret = relay_process_control_command(conn, | |
3384 | &state->header, &payload_view); | |
3385 | if (ret < 0) { | |
5569b118 | 3386 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed JG |
3387 | goto end; |
3388 | } | |
3389 | ||
3390 | ret = connection_reset_protocol_state(conn); | |
5569b118 JG |
3391 | if (ret) { |
3392 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3393 | } | |
5312a3ed | 3394 | end: |
5569b118 | 3395 | return status; |
5312a3ed JG |
3396 | } |
3397 | ||
5569b118 JG |
3398 | static enum relay_connection_status relay_process_control_receive_header( |
3399 | struct relay_connection *conn) | |
5312a3ed JG |
3400 | { |
3401 | int ret = 0; | |
5569b118 | 3402 | enum relay_connection_status status = RELAY_CONNECTION_STATUS_OK; |
5312a3ed JG |
3403 | struct lttcomm_relayd_hdr header; |
3404 | struct lttng_dynamic_buffer *reception_buffer = | |
3405 | &conn->protocol.ctrl.reception_buffer; | |
3406 | struct ctrl_connection_state_receive_header *state = | |
3407 | &conn->protocol.ctrl.state.receive_header; | |
3408 | ||
a0377dfe | 3409 | LTTNG_ASSERT(state->left_to_receive != 0); |
5312a3ed JG |
3410 | |
3411 | ret = conn->sock->ops->recvmsg(conn->sock, | |
3412 | reception_buffer->data + state->received, | |
3413 | state->left_to_receive, MSG_DONTWAIT); | |
3414 | if (ret < 0) { | |
942003e5 MJ |
3415 | DIAGNOSTIC_PUSH |
3416 | DIAGNOSTIC_IGNORE_LOGICAL_OP | |
5569b118 | 3417 | if (errno != EAGAIN && errno != EWOULDBLOCK) { |
942003e5 | 3418 | DIAGNOSTIC_POP |
5569b118 JG |
3419 | PERROR("Unable to receive control command header on sock %d", |
3420 | conn->sock->fd); | |
3421 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3422 | } | |
5312a3ed JG |
3423 | goto end; |
3424 | } else if (ret == 0) { | |
3425 | DBG("Socket %d performed an orderly shutdown (received EOF)", conn->sock->fd); | |
5569b118 | 3426 | status = RELAY_CONNECTION_STATUS_CLOSED; |
5312a3ed JG |
3427 | goto end; |
3428 | } | |
3429 | ||
a0377dfe FD |
3430 | LTTNG_ASSERT(ret > 0); |
3431 | LTTNG_ASSERT(ret <= state->left_to_receive); | |
5312a3ed JG |
3432 | |
3433 | state->left_to_receive -= ret; | |
3434 | state->received += ret; | |
3435 | ||
3436 | if (state->left_to_receive > 0) { | |
3437 | /* | |
3438 | * Can't transition to the protocol's next state, wait to | |
3439 | * receive the rest of the header. | |
3440 | */ | |
3441 | DBG3("Partial reception of control connection protocol header (received %" PRIu64 " bytes, %" PRIu64 " bytes left to receive, fd = %i)", | |
3442 | state->received, state->left_to_receive, | |
3443 | conn->sock->fd); | |
5312a3ed JG |
3444 | goto end; |
3445 | } | |
3446 | ||
3447 | /* Transition to next state: receiving the command's payload. */ | |
3448 | conn->protocol.ctrl.state_id = | |
3449 | CTRL_CONNECTION_STATE_RECEIVE_PAYLOAD; | |
3450 | memcpy(&header, reception_buffer->data, sizeof(header)); | |
3451 | header.circuit_id = be64toh(header.circuit_id); | |
3452 | header.data_size = be64toh(header.data_size); | |
3453 | header.cmd = be32toh(header.cmd); | |
3454 | header.cmd_version = be32toh(header.cmd_version); | |
3455 | memcpy(&conn->protocol.ctrl.state.receive_payload.header, | |
3456 | &header, sizeof(header)); | |
3457 | ||
00e71031 FD |
3458 | DBG("Done receiving control command header: fd = %i, cmd = %s, cmd_version = %" PRIu32 ", payload size = %" PRIu64 " bytes", |
3459 | conn->sock->fd, lttcomm_relayd_command_str((enum lttcomm_relayd_command) header.cmd), | |
3460 | header.cmd_version, header.data_size); | |
5312a3ed | 3461 | |
715e6fb1 | 3462 | if (header.data_size > DEFAULT_NETWORK_RELAYD_CTRL_MAX_PAYLOAD_SIZE) { |
5312a3ed JG |
3463 | ERR("Command header indicates a payload (%" PRIu64 " bytes) that exceeds the maximal payload size allowed on a control connection.", |
3464 | header.data_size); | |
5569b118 | 3465 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed JG |
3466 | goto end; |
3467 | } | |
3468 | ||
3469 | conn->protocol.ctrl.state.receive_payload.left_to_receive = | |
3470 | header.data_size; | |
3471 | conn->protocol.ctrl.state.receive_payload.received = 0; | |
3472 | ret = lttng_dynamic_buffer_set_size(reception_buffer, | |
3473 | header.data_size); | |
3474 | if (ret) { | |
5569b118 | 3475 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed JG |
3476 | goto end; |
3477 | } | |
3478 | ||
3479 | if (header.data_size == 0) { | |
3480 | /* | |
3481 | * Manually invoke the next state as the poll loop | |
3482 | * will not wake-up to allow us to proceed further. | |
3483 | */ | |
5569b118 | 3484 | status = relay_process_control_receive_payload(conn); |
5312a3ed JG |
3485 | } |
3486 | end: | |
5569b118 | 3487 | return status; |
5312a3ed JG |
3488 | } |
3489 | ||
3490 | /* | |
3491 | * Process the commands received on the control socket | |
3492 | */ | |
5569b118 JG |
3493 | static enum relay_connection_status relay_process_control( |
3494 | struct relay_connection *conn) | |
5312a3ed | 3495 | { |
5569b118 | 3496 | enum relay_connection_status status; |
5312a3ed JG |
3497 | |
3498 | switch (conn->protocol.ctrl.state_id) { | |
3499 | case CTRL_CONNECTION_STATE_RECEIVE_HEADER: | |
5569b118 | 3500 | status = relay_process_control_receive_header(conn); |
5312a3ed JG |
3501 | break; |
3502 | case CTRL_CONNECTION_STATE_RECEIVE_PAYLOAD: | |
5569b118 | 3503 | status = relay_process_control_receive_payload(conn); |
5312a3ed JG |
3504 | break; |
3505 | default: | |
3506 | ERR("Unknown control connection protocol state encountered."); | |
3507 | abort(); | |
3508 | } | |
3509 | ||
5569b118 | 3510 | return status; |
5312a3ed JG |
3511 | } |
3512 | ||
5569b118 JG |
3513 | static enum relay_connection_status relay_process_data_receive_header( |
3514 | struct relay_connection *conn) | |
b8aa1682 | 3515 | { |
5312a3ed | 3516 | int ret; |
5569b118 | 3517 | enum relay_connection_status status = RELAY_CONNECTION_STATUS_OK; |
5312a3ed JG |
3518 | struct data_connection_state_receive_header *state = |
3519 | &conn->protocol.data.state.receive_header; | |
3520 | struct lttcomm_relayd_data_hdr header; | |
b8aa1682 | 3521 | struct relay_stream *stream; |
5312a3ed | 3522 | |
a0377dfe | 3523 | LTTNG_ASSERT(state->left_to_receive != 0); |
5312a3ed JG |
3524 | |
3525 | ret = conn->sock->ops->recvmsg(conn->sock, | |
3526 | state->header_reception_buffer + state->received, | |
3527 | state->left_to_receive, MSG_DONTWAIT); | |
3528 | if (ret < 0) { | |
942003e5 MJ |
3529 | DIAGNOSTIC_PUSH |
3530 | DIAGNOSTIC_IGNORE_LOGICAL_OP | |
5569b118 | 3531 | if (errno != EAGAIN && errno != EWOULDBLOCK) { |
942003e5 | 3532 | DIAGNOSTIC_POP |
5569b118 JG |
3533 | PERROR("Unable to receive data header on sock %d", conn->sock->fd); |
3534 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3535 | } | |
5312a3ed JG |
3536 | goto end; |
3537 | } else if (ret == 0) { | |
3538 | /* Orderly shutdown. Not necessary to print an error. */ | |
3539 | DBG("Socket %d performed an orderly shutdown (received EOF)", conn->sock->fd); | |
5569b118 | 3540 | status = RELAY_CONNECTION_STATUS_CLOSED; |
b8aa1682 JD |
3541 | goto end; |
3542 | } | |
3543 | ||
a0377dfe FD |
3544 | LTTNG_ASSERT(ret > 0); |
3545 | LTTNG_ASSERT(ret <= state->left_to_receive); | |
5312a3ed JG |
3546 | |
3547 | state->left_to_receive -= ret; | |
3548 | state->received += ret; | |
3549 | ||
3550 | if (state->left_to_receive > 0) { | |
3551 | /* | |
3552 | * Can't transition to the protocol's next state, wait to | |
3553 | * receive the rest of the header. | |
3554 | */ | |
3555 | DBG3("Partial reception of data connection header (received %" PRIu64 " bytes, %" PRIu64 " bytes left to receive, fd = %i)", | |
3556 | state->received, state->left_to_receive, | |
3557 | conn->sock->fd); | |
7591bab1 | 3558 | goto end; |
b8aa1682 | 3559 | } |
b8aa1682 | 3560 | |
5312a3ed JG |
3561 | /* Transition to next state: receiving the payload. */ |
3562 | conn->protocol.data.state_id = DATA_CONNECTION_STATE_RECEIVE_PAYLOAD; | |
173af62f | 3563 | |
5312a3ed JG |
3564 | memcpy(&header, state->header_reception_buffer, sizeof(header)); |
3565 | header.circuit_id = be64toh(header.circuit_id); | |
3566 | header.stream_id = be64toh(header.stream_id); | |
3567 | header.data_size = be32toh(header.data_size); | |
3568 | header.net_seq_num = be64toh(header.net_seq_num); | |
3569 | header.padding_size = be32toh(header.padding_size); | |
3570 | memcpy(&conn->protocol.data.state.receive_payload.header, &header, sizeof(header)); | |
3571 | ||
3572 | conn->protocol.data.state.receive_payload.left_to_receive = | |
3573 | header.data_size; | |
3574 | conn->protocol.data.state.receive_payload.received = 0; | |
3575 | conn->protocol.data.state.receive_payload.rotate_index = false; | |
3576 | ||
3577 | DBG("Received data connection header on fd %i: circuit_id = %" PRIu64 ", stream_id = %" PRIu64 ", data_size = %" PRIu32 ", net_seq_num = %" PRIu64 ", padding_size = %" PRIu32, | |
3578 | conn->sock->fd, header.circuit_id, | |
3579 | header.stream_id, header.data_size, | |
3580 | header.net_seq_num, header.padding_size); | |
3581 | ||
3582 | stream = stream_get_by_id(header.stream_id); | |
3583 | if (!stream) { | |
3584 | DBG("relay_process_data_receive_payload: Cannot find stream %" PRIu64, | |
3585 | header.stream_id); | |
5569b118 JG |
3586 | /* Protocol error. */ |
3587 | status = RELAY_CONNECTION_STATUS_ERROR; | |
5312a3ed JG |
3588 | goto end; |
3589 | } | |
b8aa1682 | 3590 | |
7591bab1 | 3591 | pthread_mutex_lock(&stream->lock); |
c35f9726 JG |
3592 | /* Prepare stream for the reception of a new packet. */ |
3593 | ret = stream_init_packet(stream, header.data_size, | |
3594 | &conn->protocol.data.state.receive_payload.rotate_index); | |
3595 | pthread_mutex_unlock(&stream->lock); | |
3596 | if (ret) { | |
3597 | ERR("Failed to rotate stream output file"); | |
3598 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3599 | goto end_stream_unlock; | |
1c20f0e2 JD |
3600 | } |
3601 | ||
5312a3ed | 3602 | end_stream_unlock: |
5312a3ed JG |
3603 | stream_put(stream); |
3604 | end: | |
5569b118 | 3605 | return status; |
5312a3ed JG |
3606 | } |
3607 | ||
5569b118 JG |
3608 | static enum relay_connection_status relay_process_data_receive_payload( |
3609 | struct relay_connection *conn) | |
5312a3ed JG |
3610 | { |
3611 | int ret; | |
5569b118 | 3612 | enum relay_connection_status status = RELAY_CONNECTION_STATUS_OK; |
5312a3ed JG |
3613 | struct relay_stream *stream; |
3614 | struct data_connection_state_receive_payload *state = | |
3615 | &conn->protocol.data.state.receive_payload; | |
3616 | const size_t chunk_size = RECV_DATA_BUFFER_SIZE; | |
3617 | char data_buffer[chunk_size]; | |
3618 | bool partial_recv = false; | |
3619 | bool new_stream = false, close_requested = false, index_flushed = false; | |
3620 | uint64_t left_to_receive = state->left_to_receive; | |
3621 | struct relay_session *session; | |
3622 | ||
fd0f1e3e JR |
3623 | DBG3("Receiving data for stream id %" PRIu64 " seqnum %" PRIu64 ", %" PRIu64" bytes received, %" PRIu64 " bytes left to receive", |
3624 | state->header.stream_id, state->header.net_seq_num, | |
3625 | state->received, left_to_receive); | |
3626 | ||
5312a3ed JG |
3627 | stream = stream_get_by_id(state->header.stream_id); |
3628 | if (!stream) { | |
5569b118 | 3629 | /* Protocol error. */ |
fd0f1e3e | 3630 | ERR("relay_process_data_receive_payload: cannot find stream %" PRIu64, |
5312a3ed | 3631 | state->header.stream_id); |
5569b118 | 3632 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed | 3633 | goto end; |
1c20f0e2 JD |
3634 | } |
3635 | ||
5312a3ed JG |
3636 | pthread_mutex_lock(&stream->lock); |
3637 | session = stream->trace->session; | |
fd0f1e3e JR |
3638 | if (!conn->session) { |
3639 | ret = connection_set_session(conn, session); | |
3640 | if (ret) { | |
3641 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3642 | goto end_stream_unlock; | |
3643 | } | |
3644 | } | |
5312a3ed JG |
3645 | |
3646 | /* | |
3647 | * The size of the "chunk" received on any iteration is bounded by: | |
3648 | * - the data left to receive, | |
3649 | * - the data immediately available on the socket, | |
3650 | * - the on-stack data buffer | |
3651 | */ | |
3652 | while (left_to_receive > 0 && !partial_recv) { | |
ff2aa8f0 | 3653 | size_t recv_size = std::min<uint64_t>(left_to_receive, chunk_size); |
c35f9726 | 3654 | struct lttng_buffer_view packet_chunk; |
5312a3ed JG |
3655 | |
3656 | ret = conn->sock->ops->recvmsg(conn->sock, data_buffer, | |
3657 | recv_size, MSG_DONTWAIT); | |
3658 | if (ret < 0) { | |
942003e5 MJ |
3659 | DIAGNOSTIC_PUSH |
3660 | DIAGNOSTIC_IGNORE_LOGICAL_OP | |
5569b118 | 3661 | if (errno != EAGAIN && errno != EWOULDBLOCK) { |
942003e5 | 3662 | DIAGNOSTIC_POP |
5569b118 JG |
3663 | PERROR("Socket %d error", conn->sock->fd); |
3664 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3665 | } | |
0848dba7 | 3666 | goto end_stream_unlock; |
5312a3ed JG |
3667 | } else if (ret == 0) { |
3668 | /* No more data ready to be consumed on socket. */ | |
3669 | DBG3("No more data ready for consumption on data socket of stream id %" PRIu64, | |
3670 | state->header.stream_id); | |
5569b118 | 3671 | status = RELAY_CONNECTION_STATUS_CLOSED; |
5312a3ed JG |
3672 | break; |
3673 | } else if (ret < (int) recv_size) { | |
3674 | /* | |
3675 | * All the data available on the socket has been | |
3676 | * consumed. | |
3677 | */ | |
3678 | partial_recv = true; | |
c35f9726 | 3679 | recv_size = ret; |
0848dba7 MD |
3680 | } |
3681 | ||
c35f9726 JG |
3682 | packet_chunk = lttng_buffer_view_init(data_buffer, |
3683 | 0, recv_size); | |
a0377dfe | 3684 | LTTNG_ASSERT(packet_chunk.data); |
5312a3ed | 3685 | |
c35f9726 JG |
3686 | ret = stream_write(stream, &packet_chunk, 0); |
3687 | if (ret) { | |
0848dba7 | 3688 | ERR("Relay error writing data to file"); |
5569b118 | 3689 | status = RELAY_CONNECTION_STATUS_ERROR; |
0848dba7 MD |
3690 | goto end_stream_unlock; |
3691 | } | |
3692 | ||
5312a3ed JG |
3693 | left_to_receive -= recv_size; |
3694 | state->received += recv_size; | |
3695 | state->left_to_receive = left_to_receive; | |
5312a3ed JG |
3696 | } |
3697 | ||
3698 | if (state->left_to_receive > 0) { | |
3699 | /* | |
3700 | * Did not receive all the data expected, wait for more data to | |
3701 | * become available on the socket. | |
3702 | */ | |
3703 | DBG3("Partial receive on data connection of stream id %" PRIu64 ", %" PRIu64 " bytes received, %" PRIu64 " bytes left to receive", | |
3704 | state->header.stream_id, state->received, | |
3705 | state->left_to_receive); | |
5312a3ed | 3706 | goto end_stream_unlock; |
0848dba7 | 3707 | } |
5ab7344e | 3708 | |
c35f9726 JG |
3709 | ret = stream_write(stream, NULL, state->header.padding_size); |
3710 | if (ret) { | |
5569b118 | 3711 | status = RELAY_CONNECTION_STATUS_ERROR; |
7591bab1 | 3712 | goto end_stream_unlock; |
1d4dfdef | 3713 | } |
5312a3ed | 3714 | |
298a25ca | 3715 | if (session_streams_have_index(session)) { |
c35f9726 JG |
3716 | ret = stream_update_index(stream, state->header.net_seq_num, |
3717 | state->rotate_index, &index_flushed, | |
3718 | state->header.data_size + state->header.padding_size); | |
5312a3ed | 3719 | if (ret < 0) { |
c35f9726 | 3720 | ERR("Failed to update index: stream %" PRIu64 " net_seq_num %" PRIu64 " ret %d", |
5312a3ed JG |
3721 | stream->stream_handle, |
3722 | state->header.net_seq_num, ret); | |
5569b118 | 3723 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed JG |
3724 | goto end_stream_unlock; |
3725 | } | |
3726 | } | |
3727 | ||
a8f9f353 | 3728 | if (stream->prev_data_seq == -1ULL) { |
c0bae11d MD |
3729 | new_stream = true; |
3730 | } | |
3731 | ||
c35f9726 JG |
3732 | ret = stream_complete_packet(stream, state->header.data_size + |
3733 | state->header.padding_size, state->header.net_seq_num, | |
3734 | index_flushed); | |
3735 | if (ret) { | |
3736 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3737 | goto end_stream_unlock; | |
3738 | } | |
5312a3ed JG |
3739 | |
3740 | /* | |
3741 | * Resetting the protocol state (to RECEIVE_HEADER) will trash the | |
3742 | * contents of *state which are aliased (union) to the same location as | |
3743 | * the new state. Don't use it beyond this point. | |
3744 | */ | |
3745 | connection_reset_protocol_state(conn); | |
3746 | state = NULL; | |
173af62f | 3747 | |
7591bab1 | 3748 | end_stream_unlock: |
bda7c7b9 | 3749 | close_requested = stream->close_requested; |
7591bab1 | 3750 | pthread_mutex_unlock(&stream->lock); |
5312a3ed | 3751 | if (close_requested && left_to_receive == 0) { |
bda7c7b9 JG |
3752 | try_stream_close(stream); |
3753 | } | |
3754 | ||
c0bae11d MD |
3755 | if (new_stream) { |
3756 | pthread_mutex_lock(&session->lock); | |
3757 | uatomic_set(&session->new_streams, 1); | |
3758 | pthread_mutex_unlock(&session->lock); | |
3759 | } | |
5312a3ed | 3760 | |
7591bab1 | 3761 | stream_put(stream); |
b8aa1682 | 3762 | end: |
5569b118 | 3763 | return status; |
b8aa1682 JD |
3764 | } |
3765 | ||
5312a3ed JG |
3766 | /* |
3767 | * relay_process_data: Process the data received on the data socket | |
3768 | */ | |
5569b118 JG |
3769 | static enum relay_connection_status relay_process_data( |
3770 | struct relay_connection *conn) | |
5312a3ed | 3771 | { |
5569b118 | 3772 | enum relay_connection_status status; |
5312a3ed JG |
3773 | |
3774 | switch (conn->protocol.data.state_id) { | |
3775 | case DATA_CONNECTION_STATE_RECEIVE_HEADER: | |
5569b118 | 3776 | status = relay_process_data_receive_header(conn); |
5312a3ed JG |
3777 | break; |
3778 | case DATA_CONNECTION_STATE_RECEIVE_PAYLOAD: | |
5569b118 | 3779 | status = relay_process_data_receive_payload(conn); |
5312a3ed JG |
3780 | break; |
3781 | default: | |
3782 | ERR("Unexpected data connection communication state."); | |
3783 | abort(); | |
3784 | } | |
3785 | ||
5569b118 | 3786 | return status; |
5312a3ed JG |
3787 | } |
3788 | ||
7591bab1 | 3789 | static void cleanup_connection_pollfd(struct lttng_poll_event *events, int pollfd) |
b8aa1682 JD |
3790 | { |
3791 | int ret; | |
3792 | ||
58eb9381 | 3793 | (void) lttng_poll_del(events, pollfd); |
b8aa1682 | 3794 | |
f355467e JG |
3795 | ret = fd_tracker_close_unsuspendable_fd(the_fd_tracker, &pollfd, 1, |
3796 | fd_tracker_util_close_fd, NULL); | |
b8aa1682 JD |
3797 | if (ret < 0) { |
3798 | ERR("Closing pollfd %d", pollfd); | |
3799 | } | |
3800 | } | |
3801 | ||
7591bab1 MD |
3802 | static void relay_thread_close_connection(struct lttng_poll_event *events, |
3803 | int pollfd, struct relay_connection *conn) | |
9d1bbf21 | 3804 | { |
7591bab1 | 3805 | const char *type_str; |
2a174661 | 3806 | |
7591bab1 MD |
3807 | switch (conn->type) { |
3808 | case RELAY_DATA: | |
3809 | type_str = "Data"; | |
3810 | break; | |
3811 | case RELAY_CONTROL: | |
3812 | type_str = "Control"; | |
3813 | break; | |
3814 | case RELAY_VIEWER_COMMAND: | |
3815 | type_str = "Viewer Command"; | |
3816 | break; | |
3817 | case RELAY_VIEWER_NOTIFICATION: | |
3818 | type_str = "Viewer Notification"; | |
3819 | break; | |
3820 | default: | |
3821 | type_str = "Unknown"; | |
9d1bbf21 | 3822 | } |
7591bab1 MD |
3823 | cleanup_connection_pollfd(events, pollfd); |
3824 | connection_put(conn); | |
3825 | DBG("%s connection closed with %d", type_str, pollfd); | |
b8aa1682 JD |
3826 | } |
3827 | ||
3828 | /* | |
3829 | * This thread does the actual work | |
3830 | */ | |
f46376a1 | 3831 | static void *relay_thread_worker(void *data __attribute__((unused))) |
b8aa1682 | 3832 | { |
beaad64c DG |
3833 | int ret, err = -1, last_seen_data_fd = -1; |
3834 | uint32_t nb_fd; | |
b8aa1682 JD |
3835 | struct lttng_poll_event events; |
3836 | struct lttng_ht *relay_connections_ht; | |
b8aa1682 | 3837 | struct lttng_ht_iter iter; |
90e7d72f | 3838 | struct relay_connection *destroy_conn = NULL; |
b8aa1682 JD |
3839 | |
3840 | DBG("[thread] Relay worker started"); | |
3841 | ||
9d1bbf21 MD |
3842 | rcu_register_thread(); |
3843 | ||
55706a7d MD |
3844 | health_register(health_relayd, HEALTH_RELAYD_TYPE_WORKER); |
3845 | ||
9b5e0863 MD |
3846 | if (testpoint(relayd_thread_worker)) { |
3847 | goto error_testpoint; | |
3848 | } | |
3849 | ||
f385ae0a MD |
3850 | health_code_update(); |
3851 | ||
b8aa1682 JD |
3852 | /* table of connections indexed on socket */ |
3853 | relay_connections_ht = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
095a4ae5 MD |
3854 | if (!relay_connections_ht) { |
3855 | goto relay_connections_ht_error; | |
3856 | } | |
b8aa1682 | 3857 | |
e32a0864 | 3858 | ret = create_named_thread_poll_set(&events, 2, "Worker thread epoll"); |
b8aa1682 JD |
3859 | if (ret < 0) { |
3860 | goto error_poll_create; | |
3861 | } | |
3862 | ||
58eb9381 | 3863 | ret = lttng_poll_add(&events, relay_conn_pipe[0], LPOLLIN | LPOLLRDHUP); |
b8aa1682 JD |
3864 | if (ret < 0) { |
3865 | goto error; | |
3866 | } | |
3867 | ||
beaad64c | 3868 | restart: |
b8aa1682 | 3869 | while (1) { |
beaad64c DG |
3870 | int idx = -1, i, seen_control = 0, last_notdel_data_fd = -1; |
3871 | ||
f385ae0a MD |
3872 | health_code_update(); |
3873 | ||
b8aa1682 | 3874 | /* Infinite blocking call, waiting for transmission */ |
87c1611d | 3875 | DBG3("Relayd worker thread polling..."); |
f385ae0a | 3876 | health_poll_entry(); |
b8aa1682 | 3877 | ret = lttng_poll_wait(&events, -1); |
f385ae0a | 3878 | health_poll_exit(); |
b8aa1682 JD |
3879 | if (ret < 0) { |
3880 | /* | |
3881 | * Restart interrupted system call. | |
3882 | */ | |
3883 | if (errno == EINTR) { | |
3884 | goto restart; | |
3885 | } | |
3886 | goto error; | |
3887 | } | |
3888 | ||
0d9c5d77 DG |
3889 | nb_fd = ret; |
3890 | ||
beaad64c | 3891 | /* |
7591bab1 MD |
3892 | * Process control. The control connection is |
3893 | * prioritized so we don't starve it with high | |
3894 | * throughput tracing data on the data connection. | |
beaad64c | 3895 | */ |
b8aa1682 JD |
3896 | for (i = 0; i < nb_fd; i++) { |
3897 | /* Fetch once the poll data */ | |
8a00688e MJ |
3898 | const auto revents = LTTNG_POLL_GETEV(&events, i); |
3899 | const auto pollfd = LTTNG_POLL_GETFD(&events, i); | |
b8aa1682 | 3900 | |
f385ae0a MD |
3901 | health_code_update(); |
3902 | ||
8a00688e MJ |
3903 | /* Activity on thread quit pipe, exiting. */ |
3904 | if (relayd_is_thread_quit_pipe(pollfd)) { | |
3905 | DBG("Activity on thread quit pipe"); | |
095a4ae5 MD |
3906 | err = 0; |
3907 | goto exit; | |
b8aa1682 JD |
3908 | } |
3909 | ||
58eb9381 DG |
3910 | /* Inspect the relay conn pipe for new connection */ |
3911 | if (pollfd == relay_conn_pipe[0]) { | |
03e43155 | 3912 | if (revents & LPOLLIN) { |
90e7d72f JG |
3913 | struct relay_connection *conn; |
3914 | ||
58eb9381 | 3915 | ret = lttng_read(relay_conn_pipe[0], &conn, sizeof(conn)); |
b8aa1682 JD |
3916 | if (ret < 0) { |
3917 | goto error; | |
3918 | } | |
73039936 FD |
3919 | ret = lttng_poll_add(&events, |
3920 | conn->sock->fd, | |
58eb9381 | 3921 | LPOLLIN | LPOLLRDHUP); |
73039936 FD |
3922 | if (ret) { |
3923 | ERR("Failed to add new connection file descriptor to poll set"); | |
3924 | goto error; | |
3925 | } | |
7591bab1 | 3926 | connection_ht_add(relay_connections_ht, conn); |
58eb9381 | 3927 | DBG("Connection socket %d added", conn->sock->fd); |
03e43155 MD |
3928 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
3929 | ERR("Relay connection pipe error"); | |
3930 | goto error; | |
3931 | } else { | |
3932 | ERR("Unexpected poll events %u for sock %d", revents, pollfd); | |
3933 | goto error; | |
b8aa1682 | 3934 | } |
58eb9381 | 3935 | } else { |
90e7d72f JG |
3936 | struct relay_connection *ctrl_conn; |
3937 | ||
7591bab1 | 3938 | ctrl_conn = connection_get_by_sock(relay_connections_ht, pollfd); |
58eb9381 | 3939 | /* If not found, there is a synchronization issue. */ |
a0377dfe | 3940 | LTTNG_ASSERT(ctrl_conn); |
58eb9381 | 3941 | |
03e43155 MD |
3942 | if (ctrl_conn->type == RELAY_DATA) { |
3943 | if (revents & LPOLLIN) { | |
beaad64c DG |
3944 | /* |
3945 | * Flag the last seen data fd not deleted. It will be | |
3946 | * used as the last seen fd if any fd gets deleted in | |
3947 | * this first loop. | |
3948 | */ | |
3949 | last_notdel_data_fd = pollfd; | |
3950 | } | |
03e43155 MD |
3951 | goto put_ctrl_connection; |
3952 | } | |
a0377dfe | 3953 | LTTNG_ASSERT(ctrl_conn->type == RELAY_CONTROL); |
03e43155 MD |
3954 | |
3955 | if (revents & LPOLLIN) { | |
5569b118 JG |
3956 | enum relay_connection_status status; |
3957 | ||
3958 | status = relay_process_control(ctrl_conn); | |
3959 | if (status != RELAY_CONNECTION_STATUS_OK) { | |
fd0f1e3e JR |
3960 | /* |
3961 | * On socket error flag the session as aborted to force | |
3962 | * the cleanup of its stream otherwise it can leak | |
3963 | * during the lifetime of the relayd. | |
3964 | * | |
3965 | * This prevents situations in which streams can be | |
3966 | * left opened because an index was received, the | |
3967 | * control connection is closed, and the data | |
3968 | * connection is closed (uncleanly) before the packet's | |
3969 | * data provided. | |
3970 | * | |
3971 | * Since the control connection encountered an error, | |
3972 | * it is okay to be conservative and close the | |
3973 | * session right now as we can't rely on the protocol | |
3974 | * being respected anymore. | |
3975 | */ | |
3976 | if (status == RELAY_CONNECTION_STATUS_ERROR) { | |
3977 | session_abort(ctrl_conn->session); | |
3978 | } | |
3979 | ||
5569b118 | 3980 | /* Clear the connection on error or close. */ |
5312a3ed JG |
3981 | relay_thread_close_connection(&events, |
3982 | pollfd, | |
03e43155 | 3983 | ctrl_conn); |
03e43155 | 3984 | } |
5312a3ed | 3985 | seen_control = 1; |
03e43155 MD |
3986 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
3987 | relay_thread_close_connection(&events, | |
3988 | pollfd, ctrl_conn); | |
3989 | if (last_seen_data_fd == pollfd) { | |
3990 | last_seen_data_fd = last_notdel_data_fd; | |
3991 | } | |
58eb9381 | 3992 | } else { |
03e43155 MD |
3993 | ERR("Unexpected poll events %u for control sock %d", |
3994 | revents, pollfd); | |
3995 | connection_put(ctrl_conn); | |
3996 | goto error; | |
beaad64c | 3997 | } |
03e43155 | 3998 | put_ctrl_connection: |
7591bab1 | 3999 | connection_put(ctrl_conn); |
beaad64c DG |
4000 | } |
4001 | } | |
4002 | ||
4003 | /* | |
4004 | * The last loop handled a control request, go back to poll to make | |
4005 | * sure we prioritise the control socket. | |
4006 | */ | |
4007 | if (seen_control) { | |
4008 | continue; | |
4009 | } | |
4010 | ||
4011 | if (last_seen_data_fd >= 0) { | |
4012 | for (i = 0; i < nb_fd; i++) { | |
4013 | int pollfd = LTTNG_POLL_GETFD(&events, i); | |
f385ae0a MD |
4014 | |
4015 | health_code_update(); | |
4016 | ||
beaad64c DG |
4017 | if (last_seen_data_fd == pollfd) { |
4018 | idx = i; | |
4019 | break; | |
4020 | } | |
4021 | } | |
4022 | } | |
4023 | ||
4024 | /* Process data connection. */ | |
4025 | for (i = idx + 1; i < nb_fd; i++) { | |
4026 | /* Fetch the poll data. */ | |
4027 | uint32_t revents = LTTNG_POLL_GETEV(&events, i); | |
4028 | int pollfd = LTTNG_POLL_GETFD(&events, i); | |
90e7d72f | 4029 | struct relay_connection *data_conn; |
beaad64c | 4030 | |
f385ae0a MD |
4031 | health_code_update(); |
4032 | ||
fd20dac9 MD |
4033 | if (!revents) { |
4034 | /* No activity for this FD (poll implementation). */ | |
4035 | continue; | |
4036 | } | |
4037 | ||
beaad64c | 4038 | /* Skip the command pipe. It's handled in the first loop. */ |
58eb9381 | 4039 | if (pollfd == relay_conn_pipe[0]) { |
beaad64c DG |
4040 | continue; |
4041 | } | |
4042 | ||
7591bab1 | 4043 | data_conn = connection_get_by_sock(relay_connections_ht, pollfd); |
90e7d72f | 4044 | if (!data_conn) { |
fd20dac9 | 4045 | /* Skip it. Might be removed before. */ |
fd20dac9 MD |
4046 | continue; |
4047 | } | |
03e43155 MD |
4048 | if (data_conn->type == RELAY_CONTROL) { |
4049 | goto put_data_connection; | |
4050 | } | |
a0377dfe | 4051 | LTTNG_ASSERT(data_conn->type == RELAY_DATA); |
fd20dac9 MD |
4052 | |
4053 | if (revents & LPOLLIN) { | |
5569b118 JG |
4054 | enum relay_connection_status status; |
4055 | ||
4056 | status = relay_process_data(data_conn); | |
4057 | /* Connection closed or error. */ | |
4058 | if (status != RELAY_CONNECTION_STATUS_OK) { | |
fd0f1e3e JR |
4059 | /* |
4060 | * On socket error flag the session as aborted to force | |
4061 | * the cleanup of its stream otherwise it can leak | |
4062 | * during the lifetime of the relayd. | |
4063 | * | |
4064 | * This prevents situations in which streams can be | |
4065 | * left opened because an index was received, the | |
4066 | * control connection is closed, and the data | |
4067 | * connection is closed (uncleanly) before the packet's | |
4068 | * data provided. | |
4069 | * | |
4070 | * Since the data connection encountered an error, | |
4071 | * it is okay to be conservative and close the | |
4072 | * session right now as we can't rely on the protocol | |
4073 | * being respected anymore. | |
4074 | */ | |
4075 | if (status == RELAY_CONNECTION_STATUS_ERROR) { | |
4076 | session_abort(data_conn->session); | |
4077 | } | |
7591bab1 | 4078 | relay_thread_close_connection(&events, pollfd, |
03e43155 | 4079 | data_conn); |
fd20dac9 MD |
4080 | /* |
4081 | * Every goto restart call sets the last seen fd where | |
4082 | * here we don't really care since we gracefully | |
4083 | * continue the loop after the connection is deleted. | |
4084 | */ | |
4085 | } else { | |
4086 | /* Keep last seen port. */ | |
4087 | last_seen_data_fd = pollfd; | |
7591bab1 | 4088 | connection_put(data_conn); |
fd20dac9 | 4089 | goto restart; |
b8aa1682 | 4090 | } |
03e43155 MD |
4091 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
4092 | relay_thread_close_connection(&events, pollfd, | |
4093 | data_conn); | |
4094 | } else { | |
4095 | ERR("Unknown poll events %u for data sock %d", | |
4096 | revents, pollfd); | |
b8aa1682 | 4097 | } |
03e43155 | 4098 | put_data_connection: |
7591bab1 | 4099 | connection_put(data_conn); |
b8aa1682 | 4100 | } |
beaad64c | 4101 | last_seen_data_fd = -1; |
b8aa1682 JD |
4102 | } |
4103 | ||
f385ae0a MD |
4104 | /* Normal exit, no error */ |
4105 | ret = 0; | |
4106 | ||
095a4ae5 | 4107 | exit: |
b8aa1682 | 4108 | error: |
71efa8ef | 4109 | /* Cleanup remaining connection object. */ |
9d1bbf21 | 4110 | rcu_read_lock(); |
90e7d72f JG |
4111 | cds_lfht_for_each_entry(relay_connections_ht->ht, &iter.iter, |
4112 | destroy_conn, | |
58eb9381 | 4113 | sock_n.node) { |
f385ae0a | 4114 | health_code_update(); |
98ba050e | 4115 | |
fd0f1e3e | 4116 | session_abort(destroy_conn->session); |
98ba050e | 4117 | |
7591bab1 MD |
4118 | /* |
4119 | * No need to grab another ref, because we own | |
4120 | * destroy_conn. | |
4121 | */ | |
4122 | relay_thread_close_connection(&events, destroy_conn->sock->fd, | |
4123 | destroy_conn); | |
b8aa1682 | 4124 | } |
94d49140 | 4125 | rcu_read_unlock(); |
7591bab1 | 4126 | |
e32a0864 | 4127 | (void) fd_tracker_util_poll_clean(the_fd_tracker, &events); |
7d2f7452 | 4128 | error_poll_create: |
b8aa1682 | 4129 | lttng_ht_destroy(relay_connections_ht); |
095a4ae5 | 4130 | relay_connections_ht_error: |
58eb9381 | 4131 | /* Close relay conn pipes */ |
726b2396 JG |
4132 | (void) fd_tracker_util_pipe_close(the_fd_tracker, |
4133 | relay_conn_pipe); | |
095a4ae5 MD |
4134 | if (err) { |
4135 | DBG("Thread exited with error"); | |
4136 | } | |
b8aa1682 | 4137 | DBG("Worker thread cleanup complete"); |
9b5e0863 | 4138 | error_testpoint: |
f385ae0a MD |
4139 | if (err) { |
4140 | health_error(); | |
4141 | ERR("Health error occurred in %s", __func__); | |
4142 | } | |
4143 | health_unregister(health_relayd); | |
9d1bbf21 | 4144 | rcu_unregister_thread(); |
b4aacfdc | 4145 | lttng_relay_stop_threads(); |
b8aa1682 JD |
4146 | return NULL; |
4147 | } | |
4148 | ||
4149 | /* | |
4150 | * Create the relay command pipe to wake thread_manage_apps. | |
4151 | * Closed in cleanup(). | |
4152 | */ | |
58eb9381 | 4153 | static int create_relay_conn_pipe(void) |
b8aa1682 | 4154 | { |
726b2396 JG |
4155 | return fd_tracker_util_pipe_open_cloexec(the_fd_tracker, |
4156 | "Relayd connection pipe", relay_conn_pipe); | |
b8aa1682 JD |
4157 | } |
4158 | ||
f46376a1 | 4159 | static int stdio_open(void *data __attribute__((unused)), int *fds) |
9c256b01 JG |
4160 | { |
4161 | fds[0] = fileno(stdout); | |
4162 | fds[1] = fileno(stderr); | |
4163 | return 0; | |
4164 | } | |
4165 | ||
9c256b01 JG |
4166 | static int track_stdio(void) |
4167 | { | |
4168 | int fds[2]; | |
4169 | const char *names[] = { "stdout", "stderr" }; | |
4170 | ||
4171 | return fd_tracker_open_unsuspendable_fd(the_fd_tracker, fds, | |
4172 | names, 2, stdio_open, NULL); | |
4173 | } | |
4174 | ||
b8aa1682 JD |
4175 | /* |
4176 | * main | |
4177 | */ | |
4178 | int main(int argc, char **argv) | |
4179 | { | |
00e3b7f1 | 4180 | bool thread_is_rcu_registered = false; |
178a0557 | 4181 | int ret = 0, retval = 0; |
b8aa1682 | 4182 | void *status; |
f7c3ffd7 | 4183 | char *unlinked_file_directory_path = NULL, *output_path = NULL; |
b8aa1682 | 4184 | |
2a10de3b JR |
4185 | /* Parse environment variables */ |
4186 | ret = parse_env_options(); | |
4187 | if (ret) { | |
4188 | retval = -1; | |
4189 | goto exit_options; | |
4190 | } | |
4191 | ||
4192 | /* | |
4193 | * Parse arguments. | |
4194 | * Command line arguments overwrite environment. | |
4195 | */ | |
b8aa1682 | 4196 | progname = argv[0]; |
178a0557 MD |
4197 | if (set_options(argc, argv)) { |
4198 | retval = -1; | |
4199 | goto exit_options; | |
b8aa1682 JD |
4200 | } |
4201 | ||
178a0557 MD |
4202 | if (set_signal_handler()) { |
4203 | retval = -1; | |
4204 | goto exit_options; | |
b8aa1682 JD |
4205 | } |
4206 | ||
a3bc3918 JR |
4207 | relayd_config_log(); |
4208 | ||
4209 | if (opt_print_version) { | |
4210 | print_version(); | |
4211 | retval = 0; | |
4212 | goto exit_options; | |
4213 | } | |
4214 | ||
c0407718 JG |
4215 | ret = fclose(stdin); |
4216 | if (ret) { | |
4217 | PERROR("Failed to close stdin"); | |
4218 | goto exit_options; | |
4219 | } | |
4220 | ||
35ab25e5 MD |
4221 | DBG("Clear command %s", opt_allow_clear ? "allowed" : "disallowed"); |
4222 | ||
4d513a50 DG |
4223 | /* Try to create directory if -o, --output is specified. */ |
4224 | if (opt_output_path) { | |
994fa64f DG |
4225 | if (*opt_output_path != '/') { |
4226 | ERR("Please specify an absolute path for -o, --output PATH"); | |
178a0557 MD |
4227 | retval = -1; |
4228 | goto exit_options; | |
994fa64f DG |
4229 | } |
4230 | ||
d77dded2 JG |
4231 | ret = utils_mkdir_recursive(opt_output_path, S_IRWXU | S_IRWXG, |
4232 | -1, -1); | |
4d513a50 DG |
4233 | if (ret < 0) { |
4234 | ERR("Unable to create %s", opt_output_path); | |
178a0557 MD |
4235 | retval = -1; |
4236 | goto exit_options; | |
4d513a50 DG |
4237 | } |
4238 | } | |
4239 | ||
b8aa1682 | 4240 | /* Daemonize */ |
b5218ffb | 4241 | if (opt_daemon || opt_background) { |
3fd27398 MD |
4242 | ret = lttng_daemonize(&child_ppid, &recv_child_signal, |
4243 | !opt_background); | |
b8aa1682 | 4244 | if (ret < 0) { |
178a0557 MD |
4245 | retval = -1; |
4246 | goto exit_options; | |
b8aa1682 | 4247 | } |
3fd27398 MD |
4248 | } |
4249 | ||
ce9ee1fb JR |
4250 | if (opt_working_directory) { |
4251 | ret = utils_change_working_directory(opt_working_directory); | |
4252 | if (ret) { | |
4253 | /* All errors are already logged. */ | |
4254 | goto exit_options; | |
4255 | } | |
4256 | } | |
4257 | ||
23c8ff50 JG |
4258 | sessiond_trace_chunk_registry = sessiond_trace_chunk_registry_create(); |
4259 | if (!sessiond_trace_chunk_registry) { | |
4260 | ERR("Failed to initialize session daemon trace chunk registry"); | |
4261 | retval = -1; | |
794e2e5f | 4262 | goto exit_options; |
23c8ff50 JG |
4263 | } |
4264 | ||
00e3b7f1 JG |
4265 | /* |
4266 | * The RCU thread registration (and use, through the fd-tracker's | |
4267 | * creation) is done after the daemonization to allow us to not | |
4268 | * deal with liburcu's fork() management as the call RCU needs to | |
4269 | * be restored. | |
4270 | */ | |
4271 | rcu_register_thread(); | |
4272 | thread_is_rcu_registered = true; | |
4273 | ||
f7c3ffd7 JG |
4274 | output_path = create_output_path(""); |
4275 | if (!output_path) { | |
4276 | ERR("Failed to get output path"); | |
4277 | retval = -1; | |
4278 | goto exit_options; | |
4279 | } | |
4280 | ret = asprintf(&unlinked_file_directory_path, "%s/%s", output_path, | |
4281 | DEFAULT_UNLINKED_FILES_DIRECTORY); | |
4282 | free(output_path); | |
4283 | if (ret < 0) { | |
4284 | ERR("Failed to format unlinked file directory path"); | |
4285 | retval = -1; | |
4286 | goto exit_options; | |
4287 | } | |
4288 | the_fd_tracker = fd_tracker_create( | |
4289 | unlinked_file_directory_path, lttng_opt_fd_pool_size); | |
4290 | free(unlinked_file_directory_path); | |
00e3b7f1 JG |
4291 | if (!the_fd_tracker) { |
4292 | retval = -1; | |
4293 | goto exit_options; | |
4294 | } | |
4295 | ||
9c256b01 JG |
4296 | ret = track_stdio(); |
4297 | if (ret) { | |
4298 | retval = -1; | |
4299 | goto exit_options; | |
4300 | } | |
4301 | ||
178a0557 MD |
4302 | /* Initialize thread health monitoring */ |
4303 | health_relayd = health_app_create(NR_HEALTH_RELAYD_TYPES); | |
4304 | if (!health_relayd) { | |
4305 | PERROR("health_app_create error"); | |
4306 | retval = -1; | |
794e2e5f | 4307 | goto exit_options; |
178a0557 MD |
4308 | } |
4309 | ||
3fd27398 | 4310 | /* Create thread quit pipe */ |
8a00688e | 4311 | if (relayd_init_thread_quit_pipe()) { |
178a0557 | 4312 | retval = -1; |
794e2e5f | 4313 | goto exit_options; |
b8aa1682 JD |
4314 | } |
4315 | ||
b8aa1682 | 4316 | /* Setup the thread apps communication pipe. */ |
178a0557 MD |
4317 | if (create_relay_conn_pipe()) { |
4318 | retval = -1; | |
794e2e5f | 4319 | goto exit_options; |
b8aa1682 JD |
4320 | } |
4321 | ||
4322 | /* Init relay command queue. */ | |
8bdee6e2 | 4323 | cds_wfcq_init(&relay_conn_queue.head, &relay_conn_queue.tail); |
b8aa1682 | 4324 | |
554831e7 MD |
4325 | /* Initialize communication library */ |
4326 | lttcomm_init(); | |
87e45c13 | 4327 | lttcomm_inet_init(); |
554831e7 | 4328 | |
d3e2ba59 | 4329 | /* tables of sessions indexed by session ID */ |
7591bab1 MD |
4330 | sessions_ht = lttng_ht_new(0, LTTNG_HT_TYPE_U64); |
4331 | if (!sessions_ht) { | |
178a0557 | 4332 | retval = -1; |
794e2e5f | 4333 | goto exit_options; |
d3e2ba59 JD |
4334 | } |
4335 | ||
4336 | /* tables of streams indexed by stream ID */ | |
2a174661 | 4337 | relay_streams_ht = lttng_ht_new(0, LTTNG_HT_TYPE_U64); |
d3e2ba59 | 4338 | if (!relay_streams_ht) { |
178a0557 | 4339 | retval = -1; |
794e2e5f | 4340 | goto exit_options; |
d3e2ba59 JD |
4341 | } |
4342 | ||
4343 | /* tables of streams indexed by stream ID */ | |
92c6ca54 DG |
4344 | viewer_streams_ht = lttng_ht_new(0, LTTNG_HT_TYPE_U64); |
4345 | if (!viewer_streams_ht) { | |
178a0557 | 4346 | retval = -1; |
794e2e5f | 4347 | goto exit_options; |
55706a7d MD |
4348 | } |
4349 | ||
bcee2b96 | 4350 | ret = init_health_quit_pipe(); |
178a0557 MD |
4351 | if (ret) { |
4352 | retval = -1; | |
794e2e5f | 4353 | goto exit_options; |
65931c8b MD |
4354 | } |
4355 | ||
4356 | /* Create thread to manage the client socket */ | |
1a1a34b4 | 4357 | ret = pthread_create(&health_thread, default_pthread_attr(), |
19708280 | 4358 | thread_manage_health_relayd, (void *) NULL); |
178a0557 MD |
4359 | if (ret) { |
4360 | errno = ret; | |
65931c8b | 4361 | PERROR("pthread_create health"); |
178a0557 | 4362 | retval = -1; |
794e2e5f | 4363 | goto exit_options; |
65931c8b MD |
4364 | } |
4365 | ||
b8aa1682 | 4366 | /* Setup the dispatcher thread */ |
1a1a34b4 | 4367 | ret = pthread_create(&dispatcher_thread, default_pthread_attr(), |
b8aa1682 | 4368 | relay_thread_dispatcher, (void *) NULL); |
178a0557 MD |
4369 | if (ret) { |
4370 | errno = ret; | |
b8aa1682 | 4371 | PERROR("pthread_create dispatcher"); |
178a0557 MD |
4372 | retval = -1; |
4373 | goto exit_dispatcher_thread; | |
b8aa1682 JD |
4374 | } |
4375 | ||
4376 | /* Setup the worker thread */ | |
1a1a34b4 | 4377 | ret = pthread_create(&worker_thread, default_pthread_attr(), |
7591bab1 | 4378 | relay_thread_worker, NULL); |
178a0557 MD |
4379 | if (ret) { |
4380 | errno = ret; | |
b8aa1682 | 4381 | PERROR("pthread_create worker"); |
178a0557 MD |
4382 | retval = -1; |
4383 | goto exit_worker_thread; | |
b8aa1682 JD |
4384 | } |
4385 | ||
4386 | /* Setup the listener thread */ | |
1a1a34b4 | 4387 | ret = pthread_create(&listener_thread, default_pthread_attr(), |
b8aa1682 | 4388 | relay_thread_listener, (void *) NULL); |
178a0557 MD |
4389 | if (ret) { |
4390 | errno = ret; | |
b8aa1682 | 4391 | PERROR("pthread_create listener"); |
178a0557 MD |
4392 | retval = -1; |
4393 | goto exit_listener_thread; | |
b8aa1682 JD |
4394 | } |
4395 | ||
7591bab1 | 4396 | ret = relayd_live_create(live_uri); |
178a0557 | 4397 | if (ret) { |
d3e2ba59 | 4398 | ERR("Starting live viewer threads"); |
178a0557 | 4399 | retval = -1; |
50138f51 | 4400 | goto exit_live; |
d3e2ba59 JD |
4401 | } |
4402 | ||
178a0557 MD |
4403 | /* |
4404 | * This is where we start awaiting program completion (e.g. through | |
4405 | * signal that asks threads to teardown). | |
4406 | */ | |
4407 | ||
4408 | ret = relayd_live_join(); | |
4409 | if (ret) { | |
4410 | retval = -1; | |
4411 | } | |
50138f51 | 4412 | exit_live: |
178a0557 | 4413 | |
b8aa1682 | 4414 | ret = pthread_join(listener_thread, &status); |
178a0557 MD |
4415 | if (ret) { |
4416 | errno = ret; | |
4417 | PERROR("pthread_join listener_thread"); | |
4418 | retval = -1; | |
b8aa1682 JD |
4419 | } |
4420 | ||
178a0557 | 4421 | exit_listener_thread: |
b8aa1682 | 4422 | ret = pthread_join(worker_thread, &status); |
178a0557 MD |
4423 | if (ret) { |
4424 | errno = ret; | |
4425 | PERROR("pthread_join worker_thread"); | |
4426 | retval = -1; | |
b8aa1682 JD |
4427 | } |
4428 | ||
178a0557 | 4429 | exit_worker_thread: |
b8aa1682 | 4430 | ret = pthread_join(dispatcher_thread, &status); |
178a0557 MD |
4431 | if (ret) { |
4432 | errno = ret; | |
4433 | PERROR("pthread_join dispatcher_thread"); | |
4434 | retval = -1; | |
b8aa1682 | 4435 | } |
178a0557 | 4436 | exit_dispatcher_thread: |
42415026 | 4437 | |
65931c8b | 4438 | ret = pthread_join(health_thread, &status); |
178a0557 MD |
4439 | if (ret) { |
4440 | errno = ret; | |
4441 | PERROR("pthread_join health_thread"); | |
4442 | retval = -1; | |
65931c8b | 4443 | } |
178a0557 | 4444 | exit_options: |
4d62fbf8 MD |
4445 | /* |
4446 | * Wait for all pending call_rcu work to complete before tearing | |
4447 | * down data structures. call_rcu worker may be trying to | |
4448 | * perform lookups in those structures. | |
4449 | */ | |
4450 | rcu_barrier(); | |
7591bab1 MD |
4451 | relayd_cleanup(); |
4452 | ||
4453 | /* Ensure all prior call_rcu are done. */ | |
4454 | rcu_barrier(); | |
d3e2ba59 | 4455 | |
00e3b7f1 JG |
4456 | if (thread_is_rcu_registered) { |
4457 | rcu_unregister_thread(); | |
4458 | } | |
4459 | ||
178a0557 | 4460 | if (!retval) { |
b8aa1682 | 4461 | exit(EXIT_SUCCESS); |
178a0557 MD |
4462 | } else { |
4463 | exit(EXIT_FAILURE); | |
b8aa1682 | 4464 | } |
b8aa1682 | 4465 | } |