Commit | Line | Data |
---|---|---|
b8aa1682 JD |
1 | /* |
2 | * Copyright (C) 2012 - Julien Desfossez <jdesfossez@efficios.com> | |
3 | * David Goulet <dgoulet@efficios.com> | |
cd60b05a | 4 | * 2013 - Jérémie Galarneau <jeremie.galarneau@efficios.com> |
7591bab1 | 5 | * 2015 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
b8aa1682 JD |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License, version 2 only, | |
9 | * as published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; if not, write to the Free Software Foundation, Inc., | |
18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 | */ | |
20 | ||
6c1c0768 | 21 | #define _LGPL_SOURCE |
b8aa1682 JD |
22 | #include <getopt.h> |
23 | #include <grp.h> | |
24 | #include <limits.h> | |
25 | #include <pthread.h> | |
26 | #include <signal.h> | |
27 | #include <stdio.h> | |
28 | #include <stdlib.h> | |
29 | #include <string.h> | |
30 | #include <sys/mman.h> | |
31 | #include <sys/mount.h> | |
32 | #include <sys/resource.h> | |
33 | #include <sys/socket.h> | |
34 | #include <sys/stat.h> | |
35 | #include <sys/types.h> | |
36 | #include <sys/wait.h> | |
173af62f | 37 | #include <inttypes.h> |
b8aa1682 JD |
38 | #include <urcu/futex.h> |
39 | #include <urcu/uatomic.h> | |
70626904 | 40 | #include <urcu/rculist.h> |
b8aa1682 JD |
41 | #include <unistd.h> |
42 | #include <fcntl.h> | |
f8be1183 | 43 | #include <strings.h> |
b8aa1682 JD |
44 | |
45 | #include <lttng/lttng.h> | |
46 | #include <common/common.h> | |
47 | #include <common/compat/poll.h> | |
48 | #include <common/compat/socket.h> | |
f263b7fd | 49 | #include <common/compat/endian.h> |
e8fa9fb0 | 50 | #include <common/compat/getenv.h> |
b8aa1682 | 51 | #include <common/defaults.h> |
3fd27398 | 52 | #include <common/daemonize.h> |
b8aa1682 JD |
53 | #include <common/futex.h> |
54 | #include <common/sessiond-comm/sessiond-comm.h> | |
55 | #include <common/sessiond-comm/inet.h> | |
b8aa1682 JD |
56 | #include <common/sessiond-comm/relayd.h> |
57 | #include <common/uri.h> | |
a02de639 | 58 | #include <common/utils.h> |
d3ecc550 | 59 | #include <common/align.h> |
f40ef1d5 | 60 | #include <common/config/session-config.h> |
5312a3ed JG |
61 | #include <common/dynamic-buffer.h> |
62 | #include <common/buffer-view.h> | |
70626904 | 63 | #include <common/string-utils/format.h> |
b8aa1682 | 64 | |
2a635488 | 65 | #include "backward-compatibility-group-by.h" |
0f907de1 | 66 | #include "cmd.h" |
2a635488 | 67 | #include "connection.h" |
d3e2ba59 | 68 | #include "ctf-trace.h" |
2a635488 | 69 | #include "health-relayd.h" |
1c20f0e2 | 70 | #include "index.h" |
d3e2ba59 | 71 | #include "live.h" |
2a635488 | 72 | #include "lttng-relayd.h" |
2a174661 | 73 | #include "session.h" |
2a635488 | 74 | #include "sessiond-trace-chunks.h" |
2a174661 | 75 | #include "stream.h" |
f056029c | 76 | #include "tcp_keep_alive.h" |
2a635488 JR |
77 | #include "testpoint.h" |
78 | #include "tracefile-array.h" | |
79 | #include "utils.h" | |
80 | #include "version.h" | |
81 | #include "viewer-stream.h" | |
b8aa1682 | 82 | |
4fc83d94 PP |
83 | static const char *help_msg = |
84 | #ifdef LTTNG_EMBED_HELP | |
85 | #include <lttng-relayd.8.h> | |
86 | #else | |
87 | NULL | |
88 | #endif | |
89 | ; | |
90 | ||
5569b118 JG |
91 | enum relay_connection_status { |
92 | RELAY_CONNECTION_STATUS_OK, | |
a9577b76 | 93 | /* An error occurred while processing an event on the connection. */ |
5569b118 JG |
94 | RELAY_CONNECTION_STATUS_ERROR, |
95 | /* Connection closed/shutdown cleanly. */ | |
96 | RELAY_CONNECTION_STATUS_CLOSED, | |
97 | }; | |
98 | ||
b8aa1682 | 99 | /* command line options */ |
ce9ee1fb | 100 | char *opt_output_path, *opt_working_directory; |
a3bc3918 | 101 | static int opt_daemon, opt_background, opt_print_version; |
a8b66566 | 102 | enum relay_group_output_by opt_group_output_by = RELAYD_GROUP_OUTPUT_BY_UNKNOWN; |
3fd27398 MD |
103 | |
104 | /* | |
105 | * We need to wait for listener and live listener threads, as well as | |
106 | * health check thread, before being ready to signal readiness. | |
107 | */ | |
108 | #define NR_LTTNG_RELAY_READY 3 | |
109 | static int lttng_relay_ready = NR_LTTNG_RELAY_READY; | |
0848dba7 MD |
110 | |
111 | /* Size of receive buffer. */ | |
112 | #define RECV_DATA_BUFFER_SIZE 65536 | |
113 | ||
3fd27398 MD |
114 | static int recv_child_signal; /* Set to 1 when a SIGUSR1 signal is received. */ |
115 | static pid_t child_ppid; /* Internal parent PID use with daemonize. */ | |
116 | ||
095a4ae5 MD |
117 | static struct lttng_uri *control_uri; |
118 | static struct lttng_uri *data_uri; | |
d3e2ba59 | 119 | static struct lttng_uri *live_uri; |
b8aa1682 JD |
120 | |
121 | const char *progname; | |
b8aa1682 | 122 | |
65931c8b | 123 | const char *tracing_group_name = DEFAULT_TRACING_GROUP; |
cd60b05a JG |
124 | static int tracing_group_name_override; |
125 | ||
126 | const char * const config_section_name = "relayd"; | |
65931c8b | 127 | |
b8aa1682 JD |
128 | /* |
129 | * Quit pipe for all threads. This permits a single cancellation point | |
130 | * for all threads when receiving an event on the pipe. | |
131 | */ | |
0b242f62 | 132 | int thread_quit_pipe[2] = { -1, -1 }; |
b8aa1682 JD |
133 | |
134 | /* | |
135 | * This pipe is used to inform the worker thread that a command is queued and | |
136 | * ready to be processed. | |
137 | */ | |
58eb9381 | 138 | static int relay_conn_pipe[2] = { -1, -1 }; |
b8aa1682 | 139 | |
26c9d55e | 140 | /* Shared between threads */ |
b8aa1682 JD |
141 | static int dispatch_thread_exit; |
142 | ||
143 | static pthread_t listener_thread; | |
144 | static pthread_t dispatcher_thread; | |
145 | static pthread_t worker_thread; | |
65931c8b | 146 | static pthread_t health_thread; |
b8aa1682 | 147 | |
7591bab1 MD |
148 | /* |
149 | * last_relay_stream_id_lock protects last_relay_stream_id increment | |
150 | * atomicity on 32-bit architectures. | |
151 | */ | |
152 | static pthread_mutex_t last_relay_stream_id_lock = PTHREAD_MUTEX_INITIALIZER; | |
095a4ae5 | 153 | static uint64_t last_relay_stream_id; |
b8aa1682 JD |
154 | |
155 | /* | |
156 | * Relay command queue. | |
157 | * | |
158 | * The relay_thread_listener and relay_thread_dispatcher communicate with this | |
159 | * queue. | |
160 | */ | |
58eb9381 | 161 | static struct relay_conn_queue relay_conn_queue; |
b8aa1682 | 162 | |
d3e2ba59 JD |
163 | /* Global relay stream hash table. */ |
164 | struct lttng_ht *relay_streams_ht; | |
165 | ||
92c6ca54 DG |
166 | /* Global relay viewer stream hash table. */ |
167 | struct lttng_ht *viewer_streams_ht; | |
168 | ||
7591bab1 MD |
169 | /* Global relay sessions hash table. */ |
170 | struct lttng_ht *sessions_ht; | |
0a6518b0 | 171 | |
55706a7d | 172 | /* Relayd health monitoring */ |
eea7556c | 173 | struct health_app *health_relayd; |
55706a7d | 174 | |
23c8ff50 JG |
175 | struct sessiond_trace_chunk_registry *sessiond_trace_chunk_registry; |
176 | ||
cd60b05a JG |
177 | static struct option long_options[] = { |
178 | { "control-port", 1, 0, 'C', }, | |
179 | { "data-port", 1, 0, 'D', }, | |
8d5c808e | 180 | { "live-port", 1, 0, 'L', }, |
cd60b05a | 181 | { "daemonize", 0, 0, 'd', }, |
b5218ffb | 182 | { "background", 0, 0, 'b', }, |
cd60b05a JG |
183 | { "group", 1, 0, 'g', }, |
184 | { "help", 0, 0, 'h', }, | |
185 | { "output", 1, 0, 'o', }, | |
186 | { "verbose", 0, 0, 'v', }, | |
187 | { "config", 1, 0, 'f' }, | |
3a904098 | 188 | { "version", 0, 0, 'V' }, |
ce9ee1fb | 189 | { "working-directory", 1, 0, 'w', }, |
a8b66566 JR |
190 | { "group-output-by-session", 0, 0, 's', }, |
191 | { "group-output-by-host", 0, 0, 'p', }, | |
cd60b05a JG |
192 | { NULL, 0, 0, 0, }, |
193 | }; | |
194 | ||
3a904098 | 195 | static const char *config_ignore_options[] = { "help", "config", "version" }; |
cd60b05a | 196 | |
a3bc3918 JR |
197 | static void print_version(void) { |
198 | fprintf(stdout, "%s\n", VERSION); | |
199 | } | |
200 | ||
201 | static void relayd_config_log(void) | |
202 | { | |
203 | DBG("LTTng-relayd " VERSION " - " VERSION_NAME "%s%s", | |
204 | GIT_VERSION[0] == '\0' ? "" : " - " GIT_VERSION, | |
205 | EXTRA_VERSION_NAME[0] == '\0' ? "" : " - " EXTRA_VERSION_NAME); | |
206 | if (EXTRA_VERSION_DESCRIPTION[0] != '\0') { | |
207 | DBG("LTTng-relayd extra version description:\n\t" EXTRA_VERSION_DESCRIPTION "\n"); | |
208 | } | |
7f5ed73a JR |
209 | if (EXTRA_VERSION_PATCHES[0] != '\0') { |
210 | DBG("LTTng-relayd extra patches:\n\t" EXTRA_VERSION_PATCHES "\n"); | |
211 | } | |
a3bc3918 JR |
212 | } |
213 | ||
cd60b05a JG |
214 | /* |
215 | * Take an option from the getopt output and set it in the right variable to be | |
216 | * used later. | |
217 | * | |
218 | * Return 0 on success else a negative value. | |
219 | */ | |
7591bab1 | 220 | static int set_option(int opt, const char *arg, const char *optname) |
b8aa1682 | 221 | { |
cd60b05a JG |
222 | int ret; |
223 | ||
224 | switch (opt) { | |
225 | case 0: | |
226 | fprintf(stderr, "option %s", optname); | |
227 | if (arg) { | |
228 | fprintf(stderr, " with arg %s\n", arg); | |
229 | } | |
230 | break; | |
231 | case 'C': | |
e8fa9fb0 MD |
232 | if (lttng_is_setuid_setgid()) { |
233 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
234 | "-C, --control-port"); | |
235 | } else { | |
236 | ret = uri_parse(arg, &control_uri); | |
237 | if (ret < 0) { | |
238 | ERR("Invalid control URI specified"); | |
239 | goto end; | |
240 | } | |
241 | if (control_uri->port == 0) { | |
242 | control_uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
243 | } | |
cd60b05a JG |
244 | } |
245 | break; | |
246 | case 'D': | |
e8fa9fb0 MD |
247 | if (lttng_is_setuid_setgid()) { |
248 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
249 | "-D, -data-port"); | |
250 | } else { | |
251 | ret = uri_parse(arg, &data_uri); | |
252 | if (ret < 0) { | |
253 | ERR("Invalid data URI specified"); | |
254 | goto end; | |
255 | } | |
256 | if (data_uri->port == 0) { | |
257 | data_uri->port = DEFAULT_NETWORK_DATA_PORT; | |
258 | } | |
cd60b05a JG |
259 | } |
260 | break; | |
8d5c808e | 261 | case 'L': |
e8fa9fb0 MD |
262 | if (lttng_is_setuid_setgid()) { |
263 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
264 | "-L, -live-port"); | |
265 | } else { | |
266 | ret = uri_parse(arg, &live_uri); | |
267 | if (ret < 0) { | |
268 | ERR("Invalid live URI specified"); | |
269 | goto end; | |
270 | } | |
271 | if (live_uri->port == 0) { | |
272 | live_uri->port = DEFAULT_NETWORK_VIEWER_PORT; | |
273 | } | |
8d5c808e AM |
274 | } |
275 | break; | |
cd60b05a JG |
276 | case 'd': |
277 | opt_daemon = 1; | |
278 | break; | |
b5218ffb MD |
279 | case 'b': |
280 | opt_background = 1; | |
281 | break; | |
cd60b05a | 282 | case 'g': |
e8fa9fb0 MD |
283 | if (lttng_is_setuid_setgid()) { |
284 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
285 | "-g, --group"); | |
286 | } else { | |
287 | tracing_group_name = strdup(arg); | |
288 | if (tracing_group_name == NULL) { | |
289 | ret = -errno; | |
290 | PERROR("strdup"); | |
291 | goto end; | |
292 | } | |
293 | tracing_group_name_override = 1; | |
330a40bb | 294 | } |
cd60b05a JG |
295 | break; |
296 | case 'h': | |
4fc83d94 | 297 | ret = utils_show_help(8, "lttng-relayd", help_msg); |
655b5cc1 | 298 | if (ret) { |
4fc83d94 | 299 | ERR("Cannot show --help for `lttng-relayd`"); |
655b5cc1 PP |
300 | perror("exec"); |
301 | } | |
cd60b05a | 302 | exit(EXIT_FAILURE); |
3a904098 | 303 | case 'V': |
a3bc3918 JR |
304 | opt_print_version = 1; |
305 | break; | |
cd60b05a | 306 | case 'o': |
e8fa9fb0 MD |
307 | if (lttng_is_setuid_setgid()) { |
308 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
309 | "-o, --output"); | |
310 | } else { | |
311 | ret = asprintf(&opt_output_path, "%s", arg); | |
312 | if (ret < 0) { | |
313 | ret = -errno; | |
314 | PERROR("asprintf opt_output_path"); | |
315 | goto end; | |
316 | } | |
cd60b05a JG |
317 | } |
318 | break; | |
ce9ee1fb JR |
319 | case 'w': |
320 | if (lttng_is_setuid_setgid()) { | |
321 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
322 | "-w, --working-directory"); | |
323 | } else { | |
324 | ret = asprintf(&opt_working_directory, "%s", arg); | |
325 | if (ret < 0) { | |
326 | ret = -errno; | |
327 | PERROR("asprintf opt_working_directory"); | |
328 | goto end; | |
329 | } | |
330 | } | |
331 | break; | |
332 | ||
cd60b05a JG |
333 | case 'v': |
334 | /* Verbose level can increase using multiple -v */ | |
335 | if (arg) { | |
336 | lttng_opt_verbose = config_parse_value(arg); | |
337 | } else { | |
849e5b7b DG |
338 | /* Only 3 level of verbosity (-vvv). */ |
339 | if (lttng_opt_verbose < 3) { | |
340 | lttng_opt_verbose += 1; | |
341 | } | |
cd60b05a JG |
342 | } |
343 | break; | |
a8b66566 JR |
344 | case 's': |
345 | if (opt_group_output_by != RELAYD_GROUP_OUTPUT_BY_UNKNOWN) { | |
346 | ERR("Cannot set --group-output-by-session, another --group-output-by argument is present"); | |
347 | exit(EXIT_FAILURE); | |
348 | } | |
349 | opt_group_output_by = RELAYD_GROUP_OUTPUT_BY_SESSION; | |
350 | break; | |
351 | case 'p': | |
352 | if (opt_group_output_by != RELAYD_GROUP_OUTPUT_BY_UNKNOWN) { | |
353 | ERR("Cannot set --group-output-by-host, another --group-output-by argument is present"); | |
354 | exit(EXIT_FAILURE); | |
355 | } | |
356 | opt_group_output_by = RELAYD_GROUP_OUTPUT_BY_HOST; | |
357 | break; | |
cd60b05a JG |
358 | default: |
359 | /* Unknown option or other error. | |
360 | * Error is printed by getopt, just return */ | |
361 | ret = -1; | |
362 | goto end; | |
363 | } | |
364 | ||
365 | /* All good. */ | |
366 | ret = 0; | |
367 | ||
368 | end: | |
369 | return ret; | |
370 | } | |
371 | ||
372 | /* | |
373 | * config_entry_handler_cb used to handle options read from a config file. | |
f40ef1d5 | 374 | * See config_entry_handler_cb comment in common/config/session-config.h for the |
cd60b05a JG |
375 | * return value conventions. |
376 | */ | |
7591bab1 | 377 | static int config_entry_handler(const struct config_entry *entry, void *unused) |
cd60b05a JG |
378 | { |
379 | int ret = 0, i; | |
380 | ||
381 | if (!entry || !entry->name || !entry->value) { | |
382 | ret = -EINVAL; | |
383 | goto end; | |
384 | } | |
385 | ||
386 | /* Check if the option is to be ignored */ | |
387 | for (i = 0; i < sizeof(config_ignore_options) / sizeof(char *); i++) { | |
388 | if (!strcmp(entry->name, config_ignore_options[i])) { | |
389 | goto end; | |
390 | } | |
391 | } | |
392 | ||
393 | for (i = 0; i < (sizeof(long_options) / sizeof(struct option)) - 1; i++) { | |
394 | /* Ignore if entry name is not fully matched. */ | |
395 | if (strcmp(entry->name, long_options[i].name)) { | |
396 | continue; | |
397 | } | |
398 | ||
399 | /* | |
7591bab1 MD |
400 | * If the option takes no argument on the command line, |
401 | * we have to check if the value is "true". We support | |
402 | * non-zero numeric values, true, on and yes. | |
cd60b05a JG |
403 | */ |
404 | if (!long_options[i].has_arg) { | |
405 | ret = config_parse_value(entry->value); | |
406 | if (ret <= 0) { | |
407 | if (ret) { | |
408 | WARN("Invalid configuration value \"%s\" for option %s", | |
409 | entry->value, entry->name); | |
410 | } | |
411 | /* False, skip boolean config option. */ | |
412 | goto end; | |
413 | } | |
414 | } | |
415 | ||
416 | ret = set_option(long_options[i].val, entry->value, entry->name); | |
417 | goto end; | |
418 | } | |
419 | ||
420 | WARN("Unrecognized option \"%s\" in daemon configuration file.", | |
421 | entry->name); | |
422 | ||
423 | end: | |
424 | return ret; | |
425 | } | |
426 | ||
2a10de3b JR |
427 | static int parse_env_options(void) |
428 | { | |
429 | int ret = 0; | |
430 | char *value = NULL; | |
431 | ||
432 | value = lttng_secure_getenv(DEFAULT_LTTNG_RELAYD_WORKING_DIRECTORY_ENV); | |
433 | if (value) { | |
434 | opt_working_directory = strdup(value); | |
435 | if (!opt_working_directory) { | |
436 | ERR("Failed to allocate working directory string (\"%s\")", | |
437 | value); | |
438 | ret = -1; | |
439 | } | |
440 | } | |
441 | return ret; | |
442 | } | |
443 | ||
7591bab1 | 444 | static int set_options(int argc, char **argv) |
cd60b05a | 445 | { |
178a0557 | 446 | int c, ret = 0, option_index = 0, retval = 0; |
cd60b05a JG |
447 | int orig_optopt = optopt, orig_optind = optind; |
448 | char *default_address, *optstring; | |
449 | const char *config_path = NULL; | |
450 | ||
451 | optstring = utils_generate_optstring(long_options, | |
452 | sizeof(long_options) / sizeof(struct option)); | |
453 | if (!optstring) { | |
178a0557 | 454 | retval = -ENOMEM; |
cd60b05a JG |
455 | goto exit; |
456 | } | |
457 | ||
458 | /* Check for the --config option */ | |
459 | ||
460 | while ((c = getopt_long(argc, argv, optstring, long_options, | |
461 | &option_index)) != -1) { | |
462 | if (c == '?') { | |
178a0557 | 463 | retval = -EINVAL; |
cd60b05a JG |
464 | goto exit; |
465 | } else if (c != 'f') { | |
466 | continue; | |
467 | } | |
468 | ||
e8fa9fb0 MD |
469 | if (lttng_is_setuid_setgid()) { |
470 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
471 | "-f, --config"); | |
472 | } else { | |
473 | config_path = utils_expand_path(optarg); | |
474 | if (!config_path) { | |
475 | ERR("Failed to resolve path: %s", optarg); | |
476 | } | |
cd60b05a JG |
477 | } |
478 | } | |
479 | ||
480 | ret = config_get_section_entries(config_path, config_section_name, | |
481 | config_entry_handler, NULL); | |
482 | if (ret) { | |
483 | if (ret > 0) { | |
484 | ERR("Invalid configuration option at line %i", ret); | |
cd60b05a | 485 | } |
178a0557 | 486 | retval = -1; |
cd60b05a JG |
487 | goto exit; |
488 | } | |
b8aa1682 | 489 | |
cd60b05a JG |
490 | /* Reset getopt's global state */ |
491 | optopt = orig_optopt; | |
492 | optind = orig_optind; | |
b8aa1682 | 493 | while (1) { |
cd60b05a | 494 | c = getopt_long(argc, argv, optstring, long_options, &option_index); |
b8aa1682 JD |
495 | if (c == -1) { |
496 | break; | |
497 | } | |
498 | ||
cd60b05a JG |
499 | ret = set_option(c, optarg, long_options[option_index].name); |
500 | if (ret < 0) { | |
178a0557 | 501 | retval = -1; |
b8aa1682 JD |
502 | goto exit; |
503 | } | |
504 | } | |
505 | ||
506 | /* assign default values */ | |
507 | if (control_uri == NULL) { | |
fa91dc52 MD |
508 | ret = asprintf(&default_address, |
509 | "tcp://" DEFAULT_NETWORK_CONTROL_BIND_ADDRESS ":%d", | |
510 | DEFAULT_NETWORK_CONTROL_PORT); | |
b8aa1682 JD |
511 | if (ret < 0) { |
512 | PERROR("asprintf default data address"); | |
178a0557 | 513 | retval = -1; |
b8aa1682 JD |
514 | goto exit; |
515 | } | |
516 | ||
517 | ret = uri_parse(default_address, &control_uri); | |
518 | free(default_address); | |
519 | if (ret < 0) { | |
520 | ERR("Invalid control URI specified"); | |
178a0557 | 521 | retval = -1; |
b8aa1682 JD |
522 | goto exit; |
523 | } | |
524 | } | |
525 | if (data_uri == NULL) { | |
fa91dc52 MD |
526 | ret = asprintf(&default_address, |
527 | "tcp://" DEFAULT_NETWORK_DATA_BIND_ADDRESS ":%d", | |
528 | DEFAULT_NETWORK_DATA_PORT); | |
b8aa1682 JD |
529 | if (ret < 0) { |
530 | PERROR("asprintf default data address"); | |
178a0557 | 531 | retval = -1; |
b8aa1682 JD |
532 | goto exit; |
533 | } | |
534 | ||
535 | ret = uri_parse(default_address, &data_uri); | |
536 | free(default_address); | |
537 | if (ret < 0) { | |
538 | ERR("Invalid data URI specified"); | |
178a0557 | 539 | retval = -1; |
b8aa1682 JD |
540 | goto exit; |
541 | } | |
542 | } | |
d3e2ba59 | 543 | if (live_uri == NULL) { |
fa91dc52 MD |
544 | ret = asprintf(&default_address, |
545 | "tcp://" DEFAULT_NETWORK_VIEWER_BIND_ADDRESS ":%d", | |
546 | DEFAULT_NETWORK_VIEWER_PORT); | |
d3e2ba59 JD |
547 | if (ret < 0) { |
548 | PERROR("asprintf default viewer control address"); | |
178a0557 | 549 | retval = -1; |
d3e2ba59 JD |
550 | goto exit; |
551 | } | |
552 | ||
553 | ret = uri_parse(default_address, &live_uri); | |
554 | free(default_address); | |
555 | if (ret < 0) { | |
556 | ERR("Invalid viewer control URI specified"); | |
178a0557 | 557 | retval = -1; |
d3e2ba59 JD |
558 | goto exit; |
559 | } | |
560 | } | |
b8aa1682 | 561 | |
a8b66566 JR |
562 | if (opt_group_output_by == RELAYD_GROUP_OUTPUT_BY_UNKNOWN) { |
563 | opt_group_output_by = RELAYD_GROUP_OUTPUT_BY_HOST; | |
564 | } | |
565 | ||
b8aa1682 | 566 | exit: |
cd60b05a | 567 | free(optstring); |
178a0557 | 568 | return retval; |
b8aa1682 JD |
569 | } |
570 | ||
7591bab1 MD |
571 | static void print_global_objects(void) |
572 | { | |
573 | rcu_register_thread(); | |
574 | ||
575 | print_viewer_streams(); | |
576 | print_relay_streams(); | |
577 | print_sessions(); | |
578 | ||
579 | rcu_unregister_thread(); | |
580 | } | |
581 | ||
b8aa1682 JD |
582 | /* |
583 | * Cleanup the daemon | |
584 | */ | |
7591bab1 | 585 | static void relayd_cleanup(void) |
b8aa1682 | 586 | { |
7591bab1 MD |
587 | print_global_objects(); |
588 | ||
b8aa1682 JD |
589 | DBG("Cleaning up"); |
590 | ||
178a0557 MD |
591 | if (viewer_streams_ht) |
592 | lttng_ht_destroy(viewer_streams_ht); | |
593 | if (relay_streams_ht) | |
594 | lttng_ht_destroy(relay_streams_ht); | |
7591bab1 MD |
595 | if (sessions_ht) |
596 | lttng_ht_destroy(sessions_ht); | |
178a0557 | 597 | |
095a4ae5 | 598 | free(opt_output_path); |
ce9ee1fb | 599 | free(opt_working_directory); |
095a4ae5 | 600 | |
a02de639 CB |
601 | /* Close thread quit pipes */ |
602 | utils_close_pipe(thread_quit_pipe); | |
603 | ||
710c1f73 DG |
604 | uri_free(control_uri); |
605 | uri_free(data_uri); | |
8d5c808e | 606 | /* Live URI is freed in the live thread. */ |
cd60b05a JG |
607 | |
608 | if (tracing_group_name_override) { | |
609 | free((void *) tracing_group_name); | |
610 | } | |
b8aa1682 JD |
611 | } |
612 | ||
613 | /* | |
614 | * Write to writable pipe used to notify a thread. | |
615 | */ | |
7591bab1 | 616 | static int notify_thread_pipe(int wpipe) |
b8aa1682 | 617 | { |
6cd525e8 | 618 | ssize_t ret; |
b8aa1682 | 619 | |
6cd525e8 MD |
620 | ret = lttng_write(wpipe, "!", 1); |
621 | if (ret < 1) { | |
b8aa1682 | 622 | PERROR("write poll pipe"); |
b4aacfdc | 623 | goto end; |
b8aa1682 | 624 | } |
b4aacfdc MD |
625 | ret = 0; |
626 | end: | |
b8aa1682 JD |
627 | return ret; |
628 | } | |
629 | ||
7591bab1 | 630 | static int notify_health_quit_pipe(int *pipe) |
65931c8b | 631 | { |
6cd525e8 | 632 | ssize_t ret; |
65931c8b | 633 | |
6cd525e8 MD |
634 | ret = lttng_write(pipe[1], "4", 1); |
635 | if (ret < 1) { | |
65931c8b | 636 | PERROR("write relay health quit"); |
b4aacfdc | 637 | goto end; |
65931c8b | 638 | } |
b4aacfdc MD |
639 | ret = 0; |
640 | end: | |
641 | return ret; | |
65931c8b MD |
642 | } |
643 | ||
b8aa1682 | 644 | /* |
b4aacfdc | 645 | * Stop all relayd and relayd-live threads. |
b8aa1682 | 646 | */ |
b4aacfdc | 647 | int lttng_relay_stop_threads(void) |
b8aa1682 | 648 | { |
b4aacfdc | 649 | int retval = 0; |
b8aa1682 JD |
650 | |
651 | /* Stopping all threads */ | |
652 | DBG("Terminating all threads"); | |
b4aacfdc | 653 | if (notify_thread_pipe(thread_quit_pipe[1])) { |
b8aa1682 | 654 | ERR("write error on thread quit pipe"); |
b4aacfdc | 655 | retval = -1; |
b8aa1682 JD |
656 | } |
657 | ||
b4aacfdc MD |
658 | if (notify_health_quit_pipe(health_quit_pipe)) { |
659 | ERR("write error on health quit pipe"); | |
660 | } | |
65931c8b | 661 | |
b8aa1682 | 662 | /* Dispatch thread */ |
26c9d55e | 663 | CMM_STORE_SHARED(dispatch_thread_exit, 1); |
58eb9381 | 664 | futex_nto1_wake(&relay_conn_queue.futex); |
178a0557 | 665 | |
b4aacfdc | 666 | if (relayd_live_stop()) { |
178a0557 | 667 | ERR("Error stopping live threads"); |
b4aacfdc | 668 | retval = -1; |
178a0557 | 669 | } |
b4aacfdc | 670 | return retval; |
b8aa1682 JD |
671 | } |
672 | ||
673 | /* | |
674 | * Signal handler for the daemon | |
675 | * | |
676 | * Simply stop all worker threads, leaving main() return gracefully after | |
677 | * joining all threads and calling cleanup(). | |
678 | */ | |
7591bab1 | 679 | static void sighandler(int sig) |
b8aa1682 JD |
680 | { |
681 | switch (sig) { | |
b8aa1682 JD |
682 | case SIGINT: |
683 | DBG("SIGINT caught"); | |
b4aacfdc MD |
684 | if (lttng_relay_stop_threads()) { |
685 | ERR("Error stopping threads"); | |
686 | } | |
b8aa1682 JD |
687 | break; |
688 | case SIGTERM: | |
689 | DBG("SIGTERM caught"); | |
b4aacfdc MD |
690 | if (lttng_relay_stop_threads()) { |
691 | ERR("Error stopping threads"); | |
692 | } | |
b8aa1682 | 693 | break; |
3fd27398 MD |
694 | case SIGUSR1: |
695 | CMM_STORE_SHARED(recv_child_signal, 1); | |
696 | break; | |
b8aa1682 JD |
697 | default: |
698 | break; | |
699 | } | |
700 | } | |
701 | ||
702 | /* | |
703 | * Setup signal handler for : | |
704 | * SIGINT, SIGTERM, SIGPIPE | |
705 | */ | |
7591bab1 | 706 | static int set_signal_handler(void) |
b8aa1682 JD |
707 | { |
708 | int ret = 0; | |
709 | struct sigaction sa; | |
710 | sigset_t sigset; | |
711 | ||
712 | if ((ret = sigemptyset(&sigset)) < 0) { | |
713 | PERROR("sigemptyset"); | |
714 | return ret; | |
715 | } | |
716 | ||
b8aa1682 JD |
717 | sa.sa_mask = sigset; |
718 | sa.sa_flags = 0; | |
0072e5e2 MD |
719 | |
720 | sa.sa_handler = sighandler; | |
b8aa1682 JD |
721 | if ((ret = sigaction(SIGTERM, &sa, NULL)) < 0) { |
722 | PERROR("sigaction"); | |
723 | return ret; | |
724 | } | |
725 | ||
726 | if ((ret = sigaction(SIGINT, &sa, NULL)) < 0) { | |
727 | PERROR("sigaction"); | |
728 | return ret; | |
729 | } | |
730 | ||
0072e5e2 | 731 | if ((ret = sigaction(SIGUSR1, &sa, NULL)) < 0) { |
b8aa1682 JD |
732 | PERROR("sigaction"); |
733 | return ret; | |
734 | } | |
735 | ||
0072e5e2 MD |
736 | sa.sa_handler = SIG_IGN; |
737 | if ((ret = sigaction(SIGPIPE, &sa, NULL)) < 0) { | |
3fd27398 MD |
738 | PERROR("sigaction"); |
739 | return ret; | |
740 | } | |
741 | ||
742 | DBG("Signal handler set for SIGTERM, SIGUSR1, SIGPIPE and SIGINT"); | |
b8aa1682 JD |
743 | |
744 | return ret; | |
745 | } | |
746 | ||
3fd27398 MD |
747 | void lttng_relay_notify_ready(void) |
748 | { | |
749 | /* Notify the parent of the fork() process that we are ready. */ | |
750 | if (opt_daemon || opt_background) { | |
751 | if (uatomic_sub_return(<tng_relay_ready, 1) == 0) { | |
752 | kill(child_ppid, SIGUSR1); | |
753 | } | |
754 | } | |
755 | } | |
756 | ||
b8aa1682 JD |
757 | /* |
758 | * Init thread quit pipe. | |
759 | * | |
760 | * Return -1 on error or 0 if all pipes are created. | |
761 | */ | |
7591bab1 | 762 | static int init_thread_quit_pipe(void) |
b8aa1682 | 763 | { |
a02de639 | 764 | int ret; |
b8aa1682 | 765 | |
a02de639 | 766 | ret = utils_create_pipe_cloexec(thread_quit_pipe); |
b8aa1682 | 767 | |
b8aa1682 JD |
768 | return ret; |
769 | } | |
770 | ||
771 | /* | |
772 | * Create a poll set with O_CLOEXEC and add the thread quit pipe to the set. | |
773 | */ | |
7591bab1 | 774 | static int create_thread_poll_set(struct lttng_poll_event *events, int size) |
b8aa1682 JD |
775 | { |
776 | int ret; | |
777 | ||
778 | if (events == NULL || size == 0) { | |
779 | ret = -1; | |
780 | goto error; | |
781 | } | |
782 | ||
783 | ret = lttng_poll_create(events, size, LTTNG_CLOEXEC); | |
784 | if (ret < 0) { | |
785 | goto error; | |
786 | } | |
787 | ||
788 | /* Add quit pipe */ | |
c7759e6a | 789 | ret = lttng_poll_add(events, thread_quit_pipe[0], LPOLLIN | LPOLLERR); |
b8aa1682 JD |
790 | if (ret < 0) { |
791 | goto error; | |
792 | } | |
793 | ||
794 | return 0; | |
795 | ||
796 | error: | |
797 | return ret; | |
798 | } | |
799 | ||
800 | /* | |
801 | * Check if the thread quit pipe was triggered. | |
802 | * | |
803 | * Return 1 if it was triggered else 0; | |
804 | */ | |
7591bab1 | 805 | static int check_thread_quit_pipe(int fd, uint32_t events) |
b8aa1682 JD |
806 | { |
807 | if (fd == thread_quit_pipe[0] && (events & LPOLLIN)) { | |
808 | return 1; | |
809 | } | |
810 | ||
811 | return 0; | |
812 | } | |
813 | ||
814 | /* | |
815 | * Create and init socket from uri. | |
816 | */ | |
7591bab1 | 817 | static struct lttcomm_sock *relay_socket_create(struct lttng_uri *uri) |
b8aa1682 JD |
818 | { |
819 | int ret; | |
820 | struct lttcomm_sock *sock = NULL; | |
821 | ||
822 | sock = lttcomm_alloc_sock_from_uri(uri); | |
823 | if (sock == NULL) { | |
824 | ERR("Allocating socket"); | |
825 | goto error; | |
826 | } | |
827 | ||
828 | ret = lttcomm_create_sock(sock); | |
829 | if (ret < 0) { | |
830 | goto error; | |
831 | } | |
832 | DBG("Listening on sock %d", sock->fd); | |
833 | ||
834 | ret = sock->ops->bind(sock); | |
835 | if (ret < 0) { | |
2288467f | 836 | PERROR("Failed to bind socket"); |
b8aa1682 JD |
837 | goto error; |
838 | } | |
839 | ||
840 | ret = sock->ops->listen(sock, -1); | |
841 | if (ret < 0) { | |
842 | goto error; | |
843 | ||
844 | } | |
845 | ||
846 | return sock; | |
847 | ||
848 | error: | |
849 | if (sock) { | |
850 | lttcomm_destroy_sock(sock); | |
851 | } | |
852 | return NULL; | |
853 | } | |
854 | ||
855 | /* | |
856 | * This thread manages the listening for new connections on the network | |
857 | */ | |
7591bab1 | 858 | static void *relay_thread_listener(void *data) |
b8aa1682 | 859 | { |
095a4ae5 | 860 | int i, ret, pollfd, err = -1; |
b8aa1682 JD |
861 | uint32_t revents, nb_fd; |
862 | struct lttng_poll_event events; | |
863 | struct lttcomm_sock *control_sock, *data_sock; | |
864 | ||
b8aa1682 JD |
865 | DBG("[thread] Relay listener started"); |
866 | ||
55706a7d MD |
867 | health_register(health_relayd, HEALTH_RELAYD_TYPE_LISTENER); |
868 | ||
f385ae0a MD |
869 | health_code_update(); |
870 | ||
7591bab1 | 871 | control_sock = relay_socket_create(control_uri); |
b8aa1682 | 872 | if (!control_sock) { |
095a4ae5 | 873 | goto error_sock_control; |
b8aa1682 JD |
874 | } |
875 | ||
7591bab1 | 876 | data_sock = relay_socket_create(data_uri); |
b8aa1682 | 877 | if (!data_sock) { |
095a4ae5 | 878 | goto error_sock_relay; |
b8aa1682 JD |
879 | } |
880 | ||
881 | /* | |
7591bab1 MD |
882 | * Pass 3 as size here for the thread quit pipe, control and |
883 | * data socket. | |
b8aa1682 JD |
884 | */ |
885 | ret = create_thread_poll_set(&events, 3); | |
886 | if (ret < 0) { | |
887 | goto error_create_poll; | |
888 | } | |
889 | ||
890 | /* Add the control socket */ | |
891 | ret = lttng_poll_add(&events, control_sock->fd, LPOLLIN | LPOLLRDHUP); | |
892 | if (ret < 0) { | |
893 | goto error_poll_add; | |
894 | } | |
895 | ||
896 | /* Add the data socket */ | |
897 | ret = lttng_poll_add(&events, data_sock->fd, LPOLLIN | LPOLLRDHUP); | |
898 | if (ret < 0) { | |
899 | goto error_poll_add; | |
900 | } | |
901 | ||
3fd27398 MD |
902 | lttng_relay_notify_ready(); |
903 | ||
9b5e0863 MD |
904 | if (testpoint(relayd_thread_listener)) { |
905 | goto error_testpoint; | |
906 | } | |
907 | ||
b8aa1682 | 908 | while (1) { |
f385ae0a MD |
909 | health_code_update(); |
910 | ||
b8aa1682 JD |
911 | DBG("Listener accepting connections"); |
912 | ||
b8aa1682 | 913 | restart: |
f385ae0a | 914 | health_poll_entry(); |
b8aa1682 | 915 | ret = lttng_poll_wait(&events, -1); |
f385ae0a | 916 | health_poll_exit(); |
b8aa1682 JD |
917 | if (ret < 0) { |
918 | /* | |
919 | * Restart interrupted system call. | |
920 | */ | |
921 | if (errno == EINTR) { | |
922 | goto restart; | |
923 | } | |
924 | goto error; | |
925 | } | |
926 | ||
0d9c5d77 DG |
927 | nb_fd = ret; |
928 | ||
b8aa1682 JD |
929 | DBG("Relay new connection received"); |
930 | for (i = 0; i < nb_fd; i++) { | |
f385ae0a MD |
931 | health_code_update(); |
932 | ||
b8aa1682 JD |
933 | /* Fetch once the poll data */ |
934 | revents = LTTNG_POLL_GETEV(&events, i); | |
935 | pollfd = LTTNG_POLL_GETFD(&events, i); | |
936 | ||
937 | /* Thread quit pipe has been closed. Killing thread. */ | |
938 | ret = check_thread_quit_pipe(pollfd, revents); | |
939 | if (ret) { | |
095a4ae5 MD |
940 | err = 0; |
941 | goto exit; | |
b8aa1682 JD |
942 | } |
943 | ||
03e43155 | 944 | if (revents & LPOLLIN) { |
4b7f17b2 | 945 | /* |
7591bab1 MD |
946 | * A new connection is requested, therefore a |
947 | * sessiond/consumerd connection is allocated in | |
948 | * this thread, enqueued to a global queue and | |
949 | * dequeued (and freed) in the worker thread. | |
4b7f17b2 | 950 | */ |
58eb9381 DG |
951 | int val = 1; |
952 | struct relay_connection *new_conn; | |
4b7f17b2 | 953 | struct lttcomm_sock *newsock; |
7591bab1 | 954 | enum connection_type type; |
b8aa1682 JD |
955 | |
956 | if (pollfd == data_sock->fd) { | |
7591bab1 | 957 | type = RELAY_DATA; |
b8aa1682 | 958 | newsock = data_sock->ops->accept(data_sock); |
58eb9381 DG |
959 | DBG("Relay data connection accepted, socket %d", |
960 | newsock->fd); | |
4b7f17b2 MD |
961 | } else { |
962 | assert(pollfd == control_sock->fd); | |
7591bab1 | 963 | type = RELAY_CONTROL; |
b8aa1682 | 964 | newsock = control_sock->ops->accept(control_sock); |
58eb9381 DG |
965 | DBG("Relay control connection accepted, socket %d", |
966 | newsock->fd); | |
b8aa1682 | 967 | } |
58eb9381 DG |
968 | if (!newsock) { |
969 | PERROR("accepting sock"); | |
58eb9381 DG |
970 | goto error; |
971 | } | |
972 | ||
973 | ret = setsockopt(newsock->fd, SOL_SOCKET, SO_REUSEADDR, &val, | |
974 | sizeof(val)); | |
b8aa1682 JD |
975 | if (ret < 0) { |
976 | PERROR("setsockopt inet"); | |
4b7f17b2 | 977 | lttcomm_destroy_sock(newsock); |
b8aa1682 JD |
978 | goto error; |
979 | } | |
f056029c JR |
980 | |
981 | ret = socket_apply_keep_alive_config(newsock->fd); | |
982 | if (ret < 0) { | |
983 | ERR("Failed to apply TCP keep-alive configuration on socket (%i)", | |
984 | newsock->fd); | |
985 | lttcomm_destroy_sock(newsock); | |
986 | goto error; | |
987 | } | |
988 | ||
7591bab1 MD |
989 | new_conn = connection_create(newsock, type); |
990 | if (!new_conn) { | |
991 | lttcomm_destroy_sock(newsock); | |
992 | goto error; | |
993 | } | |
58eb9381 DG |
994 | |
995 | /* Enqueue request for the dispatcher thread. */ | |
8bdee6e2 SM |
996 | cds_wfcq_enqueue(&relay_conn_queue.head, &relay_conn_queue.tail, |
997 | &new_conn->qnode); | |
b8aa1682 JD |
998 | |
999 | /* | |
7591bab1 MD |
1000 | * Wake the dispatch queue futex. |
1001 | * Implicit memory barrier with the | |
1002 | * exchange in cds_wfcq_enqueue. | |
b8aa1682 | 1003 | */ |
58eb9381 | 1004 | futex_nto1_wake(&relay_conn_queue.futex); |
03e43155 MD |
1005 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
1006 | ERR("socket poll error"); | |
1007 | goto error; | |
1008 | } else { | |
1009 | ERR("Unexpected poll events %u for sock %d", revents, pollfd); | |
1010 | goto error; | |
b8aa1682 JD |
1011 | } |
1012 | } | |
1013 | } | |
1014 | ||
095a4ae5 | 1015 | exit: |
b8aa1682 JD |
1016 | error: |
1017 | error_poll_add: | |
9b5e0863 | 1018 | error_testpoint: |
b8aa1682 JD |
1019 | lttng_poll_clean(&events); |
1020 | error_create_poll: | |
095a4ae5 MD |
1021 | if (data_sock->fd >= 0) { |
1022 | ret = data_sock->ops->close(data_sock); | |
b8aa1682 JD |
1023 | if (ret) { |
1024 | PERROR("close"); | |
1025 | } | |
b8aa1682 | 1026 | } |
095a4ae5 MD |
1027 | lttcomm_destroy_sock(data_sock); |
1028 | error_sock_relay: | |
1029 | if (control_sock->fd >= 0) { | |
1030 | ret = control_sock->ops->close(control_sock); | |
b8aa1682 JD |
1031 | if (ret) { |
1032 | PERROR("close"); | |
1033 | } | |
b8aa1682 | 1034 | } |
095a4ae5 MD |
1035 | lttcomm_destroy_sock(control_sock); |
1036 | error_sock_control: | |
1037 | if (err) { | |
f385ae0a MD |
1038 | health_error(); |
1039 | ERR("Health error occurred in %s", __func__); | |
095a4ae5 | 1040 | } |
55706a7d | 1041 | health_unregister(health_relayd); |
b8aa1682 | 1042 | DBG("Relay listener thread cleanup complete"); |
b4aacfdc | 1043 | lttng_relay_stop_threads(); |
b8aa1682 JD |
1044 | return NULL; |
1045 | } | |
1046 | ||
1047 | /* | |
1048 | * This thread manages the dispatching of the requests to worker threads | |
1049 | */ | |
7591bab1 | 1050 | static void *relay_thread_dispatcher(void *data) |
b8aa1682 | 1051 | { |
6cd525e8 MD |
1052 | int err = -1; |
1053 | ssize_t ret; | |
8bdee6e2 | 1054 | struct cds_wfcq_node *node; |
58eb9381 | 1055 | struct relay_connection *new_conn = NULL; |
b8aa1682 JD |
1056 | |
1057 | DBG("[thread] Relay dispatcher started"); | |
1058 | ||
55706a7d MD |
1059 | health_register(health_relayd, HEALTH_RELAYD_TYPE_DISPATCHER); |
1060 | ||
9b5e0863 MD |
1061 | if (testpoint(relayd_thread_dispatcher)) { |
1062 | goto error_testpoint; | |
1063 | } | |
1064 | ||
f385ae0a MD |
1065 | health_code_update(); |
1066 | ||
0ed3b1a8 | 1067 | for (;;) { |
f385ae0a MD |
1068 | health_code_update(); |
1069 | ||
b8aa1682 | 1070 | /* Atomically prepare the queue futex */ |
58eb9381 | 1071 | futex_nto1_prepare(&relay_conn_queue.futex); |
b8aa1682 | 1072 | |
0ed3b1a8 MD |
1073 | if (CMM_LOAD_SHARED(dispatch_thread_exit)) { |
1074 | break; | |
1075 | } | |
1076 | ||
b8aa1682 | 1077 | do { |
f385ae0a MD |
1078 | health_code_update(); |
1079 | ||
b8aa1682 | 1080 | /* Dequeue commands */ |
8bdee6e2 SM |
1081 | node = cds_wfcq_dequeue_blocking(&relay_conn_queue.head, |
1082 | &relay_conn_queue.tail); | |
b8aa1682 JD |
1083 | if (node == NULL) { |
1084 | DBG("Woken up but nothing in the relay command queue"); | |
1085 | /* Continue thread execution */ | |
1086 | break; | |
1087 | } | |
58eb9381 | 1088 | new_conn = caa_container_of(node, struct relay_connection, qnode); |
b8aa1682 | 1089 | |
58eb9381 | 1090 | DBG("Dispatching request waiting on sock %d", new_conn->sock->fd); |
b8aa1682 JD |
1091 | |
1092 | /* | |
7591bab1 MD |
1093 | * Inform worker thread of the new request. This |
1094 | * call is blocking so we can be assured that | |
1095 | * the data will be read at some point in time | |
1096 | * or wait to the end of the world :) | |
b8aa1682 | 1097 | */ |
58eb9381 DG |
1098 | ret = lttng_write(relay_conn_pipe[1], &new_conn, sizeof(new_conn)); |
1099 | if (ret < 0) { | |
1100 | PERROR("write connection pipe"); | |
7591bab1 | 1101 | connection_put(new_conn); |
b8aa1682 JD |
1102 | goto error; |
1103 | } | |
1104 | } while (node != NULL); | |
1105 | ||
1106 | /* Futex wait on queue. Blocking call on futex() */ | |
f385ae0a | 1107 | health_poll_entry(); |
58eb9381 | 1108 | futex_nto1_wait(&relay_conn_queue.futex); |
f385ae0a | 1109 | health_poll_exit(); |
b8aa1682 JD |
1110 | } |
1111 | ||
f385ae0a MD |
1112 | /* Normal exit, no error */ |
1113 | err = 0; | |
1114 | ||
b8aa1682 | 1115 | error: |
9b5e0863 | 1116 | error_testpoint: |
f385ae0a MD |
1117 | if (err) { |
1118 | health_error(); | |
1119 | ERR("Health error occurred in %s", __func__); | |
1120 | } | |
55706a7d | 1121 | health_unregister(health_relayd); |
b8aa1682 | 1122 | DBG("Dispatch thread dying"); |
b4aacfdc | 1123 | lttng_relay_stop_threads(); |
b8aa1682 JD |
1124 | return NULL; |
1125 | } | |
1126 | ||
298a25ca JG |
1127 | static bool session_streams_have_index(const struct relay_session *session) |
1128 | { | |
1129 | return session->minor >= 4 && !session->snapshot; | |
1130 | } | |
1131 | ||
c5b6f4f0 DG |
1132 | /* |
1133 | * Handle the RELAYD_CREATE_SESSION command. | |
1134 | * | |
1135 | * On success, send back the session id or else return a negative value. | |
1136 | */ | |
5312a3ed JG |
1137 | static int relay_create_session(const struct lttcomm_relayd_hdr *recv_hdr, |
1138 | struct relay_connection *conn, | |
1139 | const struct lttng_buffer_view *payload) | |
c5b6f4f0 | 1140 | { |
5312a3ed JG |
1141 | int ret = 0; |
1142 | ssize_t send_ret; | |
4c6885d2 | 1143 | struct relay_session *session = NULL; |
ecd1a12f | 1144 | struct lttcomm_relayd_create_session_reply_2_11 reply = {}; |
1e791a74 JG |
1145 | char session_name[LTTNG_NAME_MAX] = {}; |
1146 | char hostname[LTTNG_HOST_NAME_MAX] = {}; | |
7591bab1 MD |
1147 | uint32_t live_timer = 0; |
1148 | bool snapshot = false; | |
46ef2188 | 1149 | bool session_name_contains_creation_timestamp = false; |
23c8ff50 | 1150 | /* Left nil for peers < 2.11. */ |
6fa5fe7c | 1151 | char base_path[LTTNG_PATH_MAX] = {}; |
23c8ff50 | 1152 | lttng_uuid sessiond_uuid = {}; |
1e791a74 JG |
1153 | LTTNG_OPTIONAL(uint64_t) id_sessiond = {}; |
1154 | LTTNG_OPTIONAL(uint64_t) current_chunk_id = {}; | |
db1da059 | 1155 | LTTNG_OPTIONAL(time_t) creation_time = {}; |
ecd1a12f MD |
1156 | struct lttng_dynamic_buffer reply_payload; |
1157 | ||
1158 | lttng_dynamic_buffer_init(&reply_payload); | |
c5b6f4f0 | 1159 | |
f86f6389 JR |
1160 | if (conn->minor < 4) { |
1161 | /* From 2.1 to 2.3 */ | |
1162 | ret = 0; | |
1163 | } else if (conn->minor >= 4 && conn->minor < 11) { | |
1164 | /* From 2.4 to 2.10 */ | |
5312a3ed | 1165 | ret = cmd_create_session_2_4(payload, session_name, |
7591bab1 | 1166 | hostname, &live_timer, &snapshot); |
f86f6389 | 1167 | } else { |
84fa4db5 | 1168 | bool has_current_chunk; |
db1da059 JG |
1169 | uint64_t current_chunk_id_value; |
1170 | time_t creation_time_value; | |
1171 | uint64_t id_sessiond_value; | |
84fa4db5 | 1172 | |
f86f6389 | 1173 | /* From 2.11 to ... */ |
db1da059 | 1174 | ret = cmd_create_session_2_11(payload, session_name, hostname, |
6fa5fe7c | 1175 | base_path, &live_timer, &snapshot, &id_sessiond_value, |
db1da059 | 1176 | sessiond_uuid, &has_current_chunk, |
46ef2188 MD |
1177 | ¤t_chunk_id_value, &creation_time_value, |
1178 | &session_name_contains_creation_timestamp); | |
23c8ff50 JG |
1179 | if (lttng_uuid_is_nil(sessiond_uuid)) { |
1180 | /* The nil UUID is reserved for pre-2.11 clients. */ | |
1181 | ERR("Illegal nil UUID announced by peer in create session command"); | |
1182 | ret = -1; | |
1183 | goto send_reply; | |
1184 | } | |
db1da059 JG |
1185 | LTTNG_OPTIONAL_SET(&id_sessiond, id_sessiond_value); |
1186 | LTTNG_OPTIONAL_SET(&creation_time, creation_time_value); | |
1187 | if (has_current_chunk) { | |
1188 | LTTNG_OPTIONAL_SET(¤t_chunk_id, | |
1189 | current_chunk_id_value); | |
1190 | } | |
7591bab1 | 1191 | } |
f86f6389 | 1192 | |
7591bab1 MD |
1193 | if (ret < 0) { |
1194 | goto send_reply; | |
d3e2ba59 JD |
1195 | } |
1196 | ||
6fa5fe7c | 1197 | session = session_create(session_name, hostname, base_path, live_timer, |
1e791a74 JG |
1198 | snapshot, sessiond_uuid, |
1199 | id_sessiond.is_set ? &id_sessiond.value : NULL, | |
1200 | current_chunk_id.is_set ? ¤t_chunk_id.value : NULL, | |
db1da059 | 1201 | creation_time.is_set ? &creation_time.value : NULL, |
46ef2188 MD |
1202 | conn->major, conn->minor, |
1203 | session_name_contains_creation_timestamp); | |
7591bab1 MD |
1204 | if (!session) { |
1205 | ret = -1; | |
1206 | goto send_reply; | |
1207 | } | |
1208 | assert(!conn->session); | |
1209 | conn->session = session; | |
c5b6f4f0 DG |
1210 | DBG("Created session %" PRIu64, session->id); |
1211 | ||
ecd1a12f | 1212 | reply.generic.session_id = htobe64(session->id); |
7591bab1 MD |
1213 | |
1214 | send_reply: | |
c5b6f4f0 | 1215 | if (ret < 0) { |
ecd1a12f | 1216 | reply.generic.ret_code = htobe32(LTTNG_ERR_FATAL); |
c5b6f4f0 | 1217 | } else { |
ecd1a12f | 1218 | reply.generic.ret_code = htobe32(LTTNG_OK); |
c5b6f4f0 DG |
1219 | } |
1220 | ||
ecd1a12f MD |
1221 | if (conn->minor < 11) { |
1222 | /* From 2.1 to 2.10 */ | |
1223 | ret = lttng_dynamic_buffer_append(&reply_payload, | |
1224 | &reply.generic, sizeof(reply.generic)); | |
1225 | if (ret) { | |
1226 | ERR("Failed to append \"create session\" command reply header to payload buffer"); | |
1227 | ret = -1; | |
1228 | goto end; | |
1229 | } | |
1230 | } else { | |
1231 | const uint32_t output_path_length = | |
8d382dd4 | 1232 | session ? strlen(session->output_path) + 1 : 0; |
ecd1a12f MD |
1233 | |
1234 | reply.output_path_length = htobe32(output_path_length); | |
8d382dd4 JG |
1235 | ret = lttng_dynamic_buffer_append( |
1236 | &reply_payload, &reply, sizeof(reply)); | |
ecd1a12f MD |
1237 | if (ret) { |
1238 | ERR("Failed to append \"create session\" command reply header to payload buffer"); | |
1239 | goto end; | |
1240 | } | |
1241 | ||
8d382dd4 JG |
1242 | if (output_path_length) { |
1243 | ret = lttng_dynamic_buffer_append(&reply_payload, | |
1244 | session->output_path, | |
1245 | output_path_length); | |
1246 | if (ret) { | |
1247 | ERR("Failed to append \"create session\" command reply path to payload buffer"); | |
1248 | goto end; | |
1249 | } | |
ecd1a12f MD |
1250 | } |
1251 | } | |
1252 | ||
1253 | send_ret = conn->sock->ops->sendmsg(conn->sock, reply_payload.data, | |
1254 | reply_payload.size, 0); | |
1255 | if (send_ret < (ssize_t) reply_payload.size) { | |
1256 | ERR("Failed to send \"create session\" command reply of %zu bytes (ret = %zd)", | |
1257 | reply_payload.size, send_ret); | |
5312a3ed | 1258 | ret = -1; |
c5b6f4f0 | 1259 | } |
ecd1a12f | 1260 | end: |
4c6885d2 JG |
1261 | if (ret < 0 && session) { |
1262 | session_put(session); | |
1263 | } | |
ecd1a12f | 1264 | lttng_dynamic_buffer_reset(&reply_payload); |
c5b6f4f0 DG |
1265 | return ret; |
1266 | } | |
1267 | ||
a4baae1b JD |
1268 | /* |
1269 | * When we have received all the streams and the metadata for a channel, | |
1270 | * we make them visible to the viewer threads. | |
1271 | */ | |
7591bab1 | 1272 | static void publish_connection_local_streams(struct relay_connection *conn) |
a4baae1b | 1273 | { |
7591bab1 MD |
1274 | struct relay_stream *stream; |
1275 | struct relay_session *session = conn->session; | |
a4baae1b | 1276 | |
7591bab1 MD |
1277 | /* |
1278 | * We publish all streams belonging to a session atomically wrt | |
1279 | * session lock. | |
1280 | */ | |
1281 | pthread_mutex_lock(&session->lock); | |
1282 | rcu_read_lock(); | |
1283 | cds_list_for_each_entry_rcu(stream, &session->recv_list, | |
1284 | recv_node) { | |
1285 | stream_publish(stream); | |
a4baae1b | 1286 | } |
7591bab1 | 1287 | rcu_read_unlock(); |
a4baae1b | 1288 | |
7591bab1 MD |
1289 | /* |
1290 | * Inform the viewer that there are new streams in the session. | |
1291 | */ | |
1292 | if (session->viewer_attached) { | |
1293 | uatomic_set(&session->new_streams, 1); | |
1294 | } | |
1295 | pthread_mutex_unlock(&session->lock); | |
a4baae1b JD |
1296 | } |
1297 | ||
348a81dc JG |
1298 | static int conform_channel_path(char *channel_path) |
1299 | { | |
1300 | int ret = 0; | |
1301 | ||
1302 | if (strstr("../", channel_path)) { | |
1303 | ERR("Refusing channel path as it walks up the path hierarchy: \"%s\"", | |
1304 | channel_path); | |
1305 | ret = -1; | |
1306 | goto end; | |
1307 | } | |
1308 | ||
1309 | if (*channel_path == '/') { | |
1310 | const size_t len = strlen(channel_path); | |
1311 | ||
1312 | /* | |
1313 | * Channel paths from peers prior to 2.11 are expressed as an | |
1314 | * absolute path that is, in reality, relative to the relay | |
1315 | * daemon's output directory. Remove the leading slash so it | |
1316 | * is correctly interpreted as a relative path later on. | |
1317 | * | |
1318 | * len (and not len - 1) is used to copy the trailing NULL. | |
1319 | */ | |
1320 | bcopy(channel_path + 1, channel_path, len); | |
1321 | } | |
1322 | end: | |
1323 | return ret; | |
1324 | } | |
1325 | ||
b8aa1682 JD |
1326 | /* |
1327 | * relay_add_stream: allocate a new stream for a session | |
1328 | */ | |
5312a3ed JG |
1329 | static int relay_add_stream(const struct lttcomm_relayd_hdr *recv_hdr, |
1330 | struct relay_connection *conn, | |
1331 | const struct lttng_buffer_view *payload) | |
b8aa1682 | 1332 | { |
7591bab1 MD |
1333 | int ret; |
1334 | ssize_t send_ret; | |
58eb9381 | 1335 | struct relay_session *session = conn->session; |
b8aa1682 JD |
1336 | struct relay_stream *stream = NULL; |
1337 | struct lttcomm_relayd_status_stream reply; | |
4030a636 | 1338 | struct ctf_trace *trace = NULL; |
7591bab1 MD |
1339 | uint64_t stream_handle = -1ULL; |
1340 | char *path_name = NULL, *channel_name = NULL; | |
1341 | uint64_t tracefile_size = 0, tracefile_count = 0; | |
348a81dc | 1342 | LTTNG_OPTIONAL(uint64_t) stream_chunk_id = {}; |
b8aa1682 | 1343 | |
5312a3ed | 1344 | if (!session || !conn->version_check_done) { |
b8aa1682 JD |
1345 | ERR("Trying to add a stream before version check"); |
1346 | ret = -1; | |
1347 | goto end_no_session; | |
1348 | } | |
1349 | ||
2f21a469 JR |
1350 | if (session->minor == 1) { |
1351 | /* For 2.1 */ | |
5312a3ed | 1352 | ret = cmd_recv_stream_2_1(payload, &path_name, |
7591bab1 | 1353 | &channel_name); |
2f21a469 JR |
1354 | } else if (session->minor > 1 && session->minor < 11) { |
1355 | /* From 2.2 to 2.10 */ | |
5312a3ed | 1356 | ret = cmd_recv_stream_2_2(payload, &path_name, |
7591bab1 | 1357 | &channel_name, &tracefile_size, &tracefile_count); |
2f21a469 JR |
1358 | } else { |
1359 | /* From 2.11 to ... */ | |
1360 | ret = cmd_recv_stream_2_11(payload, &path_name, | |
0b50e4b3 JG |
1361 | &channel_name, &tracefile_size, &tracefile_count, |
1362 | &stream_chunk_id.value); | |
1363 | stream_chunk_id.is_set = true; | |
0f907de1 | 1364 | } |
2f21a469 | 1365 | |
0f907de1 | 1366 | if (ret < 0) { |
7591bab1 | 1367 | goto send_reply; |
b8aa1682 JD |
1368 | } |
1369 | ||
348a81dc JG |
1370 | if (conform_channel_path(path_name)) { |
1371 | goto send_reply; | |
1372 | } | |
1373 | ||
2a635488 JR |
1374 | /* |
1375 | * Backward compatibility for --group-output-by-session. | |
1376 | * Prior to lttng 2.11, the complete path is passed by the stream. | |
1377 | * Starting at 2.11, lttng-relayd uses chunk. When dealing with producer | |
1378 | * >=2.11 the chunk is responsible for the output path. When dealing | |
1379 | * with producer < 2.11 the chunk output_path is the root output path | |
1380 | * and the stream carries the complete path (path_name). | |
1381 | * To support --group-output-by-session with older producer (<2.11), we | |
1382 | * need to craft the path based on the stream path. | |
1383 | */ | |
1384 | if (opt_group_output_by == RELAYD_GROUP_OUTPUT_BY_SESSION) { | |
1385 | if (conn->minor < 4) { | |
1386 | /* | |
1387 | * From 2.1 to 2.3, the session_name is not passed on | |
1388 | * the RELAYD_CREATE_SESSION command. The session name | |
1389 | * is necessary to detect the presence of a base_path | |
1390 | * inside the stream path. Without it we cannot perform | |
1391 | * a valid group-output-by-session transformation. | |
1392 | */ | |
1393 | WARN("Unable to perform a --group-by-session transformation for session %" PRIu64 | |
1394 | " for stream with path \"%s\" as it is produced by a peer using a protocol older than v2.4", | |
1395 | session->id, path_name); | |
1396 | } else if (conn->minor >= 4 && conn->minor < 11) { | |
1397 | char *group_by_session_path_name; | |
1398 | ||
1399 | assert(session->session_name[0] != '\0'); | |
1400 | ||
1401 | group_by_session_path_name = | |
1402 | backward_compat_group_by_session( | |
1403 | path_name, | |
1404 | session->session_name); | |
1405 | if (!group_by_session_path_name) { | |
1406 | ERR("Failed to apply group by session to stream of session %" PRIu64, | |
1407 | session->id); | |
1408 | goto send_reply; | |
1409 | } | |
1410 | ||
1411 | DBG("Transformed session path from \"%s\" to \"%s\" to honor per-session name grouping", | |
1412 | path_name, group_by_session_path_name); | |
1413 | ||
1414 | free(path_name); | |
1415 | path_name = group_by_session_path_name; | |
1416 | } | |
1417 | } | |
1418 | ||
7591bab1 | 1419 | trace = ctf_trace_get_by_path_or_create(session, path_name); |
2a174661 | 1420 | if (!trace) { |
7591bab1 | 1421 | goto send_reply; |
2a174661 | 1422 | } |
2a174661 | 1423 | |
2a635488 | 1424 | /* This stream here has one reference on the trace. */ |
7591bab1 MD |
1425 | pthread_mutex_lock(&last_relay_stream_id_lock); |
1426 | stream_handle = ++last_relay_stream_id; | |
1427 | pthread_mutex_unlock(&last_relay_stream_id_lock); | |
d3e2ba59 | 1428 | |
7591bab1 MD |
1429 | /* We pass ownership of path_name and channel_name. */ |
1430 | stream = stream_create(trace, stream_handle, path_name, | |
348a81dc | 1431 | channel_name, tracefile_size, tracefile_count); |
7591bab1 MD |
1432 | path_name = NULL; |
1433 | channel_name = NULL; | |
a4baae1b | 1434 | |
2a174661 | 1435 | /* |
7591bab1 MD |
1436 | * Streams are the owners of their trace. Reference to trace is |
1437 | * kept within stream_create(). | |
2a174661 | 1438 | */ |
7591bab1 | 1439 | ctf_trace_put(trace); |
d3e2ba59 | 1440 | |
7591bab1 | 1441 | send_reply: |
53efb85a | 1442 | memset(&reply, 0, sizeof(reply)); |
7591bab1 MD |
1443 | reply.handle = htobe64(stream_handle); |
1444 | if (!stream) { | |
f73fabfd | 1445 | reply.ret_code = htobe32(LTTNG_ERR_UNK); |
b8aa1682 | 1446 | } else { |
f73fabfd | 1447 | reply.ret_code = htobe32(LTTNG_OK); |
b8aa1682 | 1448 | } |
5af40280 | 1449 | |
58eb9381 | 1450 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
b8aa1682 | 1451 | sizeof(struct lttcomm_relayd_status_stream), 0); |
5312a3ed JG |
1452 | if (send_ret < (ssize_t) sizeof(reply)) { |
1453 | ERR("Failed to send \"add stream\" command reply (ret = %zd)", | |
1454 | send_ret); | |
1455 | ret = -1; | |
b8aa1682 JD |
1456 | } |
1457 | ||
1458 | end_no_session: | |
7591bab1 MD |
1459 | free(path_name); |
1460 | free(channel_name); | |
0f907de1 | 1461 | return ret; |
b8aa1682 JD |
1462 | } |
1463 | ||
173af62f DG |
1464 | /* |
1465 | * relay_close_stream: close a specific stream | |
1466 | */ | |
5312a3ed JG |
1467 | static int relay_close_stream(const struct lttcomm_relayd_hdr *recv_hdr, |
1468 | struct relay_connection *conn, | |
1469 | const struct lttng_buffer_view *payload) | |
173af62f | 1470 | { |
5312a3ed JG |
1471 | int ret; |
1472 | ssize_t send_ret; | |
58eb9381 | 1473 | struct relay_session *session = conn->session; |
173af62f DG |
1474 | struct lttcomm_relayd_close_stream stream_info; |
1475 | struct lttcomm_relayd_generic_reply reply; | |
1476 | struct relay_stream *stream; | |
173af62f DG |
1477 | |
1478 | DBG("Close stream received"); | |
1479 | ||
5312a3ed | 1480 | if (!session || !conn->version_check_done) { |
173af62f DG |
1481 | ERR("Trying to close a stream before version check"); |
1482 | ret = -1; | |
1483 | goto end_no_session; | |
1484 | } | |
1485 | ||
5312a3ed JG |
1486 | if (payload->size < sizeof(stream_info)) { |
1487 | ERR("Unexpected payload size in \"relay_close_stream\": expected >= %zu bytes, got %zu bytes", | |
1488 | sizeof(stream_info), payload->size); | |
173af62f DG |
1489 | ret = -1; |
1490 | goto end_no_session; | |
1491 | } | |
5312a3ed JG |
1492 | memcpy(&stream_info, payload->data, sizeof(stream_info)); |
1493 | stream_info.stream_id = be64toh(stream_info.stream_id); | |
1494 | stream_info.last_net_seq_num = be64toh(stream_info.last_net_seq_num); | |
173af62f | 1495 | |
5312a3ed | 1496 | stream = stream_get_by_id(stream_info.stream_id); |
173af62f DG |
1497 | if (!stream) { |
1498 | ret = -1; | |
7591bab1 | 1499 | goto end; |
173af62f | 1500 | } |
77f7bd85 MD |
1501 | |
1502 | /* | |
1503 | * Set last_net_seq_num before the close flag. Required by data | |
1504 | * pending check. | |
1505 | */ | |
7591bab1 | 1506 | pthread_mutex_lock(&stream->lock); |
5312a3ed | 1507 | stream->last_net_seq_num = stream_info.last_net_seq_num; |
77f7bd85 MD |
1508 | pthread_mutex_unlock(&stream->lock); |
1509 | ||
bda7c7b9 JG |
1510 | /* |
1511 | * This is one of the conditions which may trigger a stream close | |
1512 | * with the others being: | |
1513 | * 1) A close command is received for a stream | |
1514 | * 2) The control connection owning the stream is closed | |
1515 | * 3) We have received all of the stream's data _after_ a close | |
1516 | * request. | |
1517 | */ | |
1518 | try_stream_close(stream); | |
7591bab1 MD |
1519 | if (stream->is_metadata) { |
1520 | struct relay_viewer_stream *vstream; | |
173af62f | 1521 | |
7591bab1 MD |
1522 | vstream = viewer_stream_get_by_id(stream->stream_handle); |
1523 | if (vstream) { | |
1524 | if (vstream->metadata_sent == stream->metadata_received) { | |
1525 | /* | |
1526 | * Since all the metadata has been sent to the | |
1527 | * viewer and that we have a request to close | |
1528 | * its stream, we can safely teardown the | |
1529 | * corresponding metadata viewer stream. | |
1530 | */ | |
1531 | viewer_stream_put(vstream); | |
1532 | } | |
1533 | /* Put local reference. */ | |
1534 | viewer_stream_put(vstream); | |
1535 | } | |
1536 | } | |
7591bab1 | 1537 | stream_put(stream); |
5312a3ed | 1538 | ret = 0; |
173af62f | 1539 | |
7591bab1 | 1540 | end: |
53efb85a | 1541 | memset(&reply, 0, sizeof(reply)); |
173af62f | 1542 | if (ret < 0) { |
f73fabfd | 1543 | reply.ret_code = htobe32(LTTNG_ERR_UNK); |
173af62f | 1544 | } else { |
f73fabfd | 1545 | reply.ret_code = htobe32(LTTNG_OK); |
173af62f | 1546 | } |
58eb9381 | 1547 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
173af62f | 1548 | sizeof(struct lttcomm_relayd_generic_reply), 0); |
5312a3ed JG |
1549 | if (send_ret < (ssize_t) sizeof(reply)) { |
1550 | ERR("Failed to send \"close stream\" command reply (ret = %zd)", | |
1551 | send_ret); | |
1552 | ret = -1; | |
173af62f DG |
1553 | } |
1554 | ||
1555 | end_no_session: | |
1556 | return ret; | |
1557 | } | |
1558 | ||
93ec662e JD |
1559 | /* |
1560 | * relay_reset_metadata: reset a metadata stream | |
1561 | */ | |
1562 | static | |
5312a3ed JG |
1563 | int relay_reset_metadata(const struct lttcomm_relayd_hdr *recv_hdr, |
1564 | struct relay_connection *conn, | |
1565 | const struct lttng_buffer_view *payload) | |
93ec662e | 1566 | { |
5312a3ed JG |
1567 | int ret; |
1568 | ssize_t send_ret; | |
93ec662e JD |
1569 | struct relay_session *session = conn->session; |
1570 | struct lttcomm_relayd_reset_metadata stream_info; | |
1571 | struct lttcomm_relayd_generic_reply reply; | |
1572 | struct relay_stream *stream; | |
1573 | ||
1574 | DBG("Reset metadata received"); | |
1575 | ||
5312a3ed | 1576 | if (!session || !conn->version_check_done) { |
93ec662e JD |
1577 | ERR("Trying to reset a metadata stream before version check"); |
1578 | ret = -1; | |
1579 | goto end_no_session; | |
1580 | } | |
1581 | ||
5312a3ed JG |
1582 | if (payload->size < sizeof(stream_info)) { |
1583 | ERR("Unexpected payload size in \"relay_reset_metadata\": expected >= %zu bytes, got %zu bytes", | |
1584 | sizeof(stream_info), payload->size); | |
93ec662e JD |
1585 | ret = -1; |
1586 | goto end_no_session; | |
1587 | } | |
5312a3ed JG |
1588 | memcpy(&stream_info, payload->data, sizeof(stream_info)); |
1589 | stream_info.stream_id = be64toh(stream_info.stream_id); | |
1590 | stream_info.version = be64toh(stream_info.version); | |
1591 | ||
1592 | DBG("Update metadata to version %" PRIu64, stream_info.version); | |
93ec662e JD |
1593 | |
1594 | /* Unsupported for live sessions for now. */ | |
1595 | if (session->live_timer != 0) { | |
1596 | ret = -1; | |
1597 | goto end; | |
1598 | } | |
1599 | ||
5312a3ed | 1600 | stream = stream_get_by_id(stream_info.stream_id); |
93ec662e JD |
1601 | if (!stream) { |
1602 | ret = -1; | |
1603 | goto end; | |
1604 | } | |
1605 | pthread_mutex_lock(&stream->lock); | |
1606 | if (!stream->is_metadata) { | |
1607 | ret = -1; | |
1608 | goto end_unlock; | |
1609 | } | |
1610 | ||
c35f9726 | 1611 | ret = stream_reset_file(stream); |
93ec662e | 1612 | if (ret < 0) { |
c35f9726 JG |
1613 | ERR("Failed to reset metadata stream %" PRIu64 |
1614 | ": stream_path = %s, channel = %s", | |
1615 | stream->stream_handle, stream->path_name, | |
1616 | stream->channel_name); | |
93ec662e JD |
1617 | goto end_unlock; |
1618 | } | |
93ec662e JD |
1619 | end_unlock: |
1620 | pthread_mutex_unlock(&stream->lock); | |
1621 | stream_put(stream); | |
1622 | ||
1623 | end: | |
1624 | memset(&reply, 0, sizeof(reply)); | |
1625 | if (ret < 0) { | |
1626 | reply.ret_code = htobe32(LTTNG_ERR_UNK); | |
1627 | } else { | |
1628 | reply.ret_code = htobe32(LTTNG_OK); | |
1629 | } | |
1630 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, | |
1631 | sizeof(struct lttcomm_relayd_generic_reply), 0); | |
5312a3ed JG |
1632 | if (send_ret < (ssize_t) sizeof(reply)) { |
1633 | ERR("Failed to send \"reset metadata\" command reply (ret = %zd)", | |
1634 | send_ret); | |
1635 | ret = -1; | |
93ec662e JD |
1636 | } |
1637 | ||
1638 | end_no_session: | |
1639 | return ret; | |
1640 | } | |
1641 | ||
b8aa1682 JD |
1642 | /* |
1643 | * relay_unknown_command: send -1 if received unknown command | |
1644 | */ | |
7591bab1 | 1645 | static void relay_unknown_command(struct relay_connection *conn) |
b8aa1682 JD |
1646 | { |
1647 | struct lttcomm_relayd_generic_reply reply; | |
5312a3ed | 1648 | ssize_t send_ret; |
b8aa1682 | 1649 | |
53efb85a | 1650 | memset(&reply, 0, sizeof(reply)); |
f73fabfd | 1651 | reply.ret_code = htobe32(LTTNG_ERR_UNK); |
5312a3ed JG |
1652 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
1653 | if (send_ret < sizeof(reply)) { | |
1654 | ERR("Failed to send \"unknown command\" command reply (ret = %zd)", send_ret); | |
b8aa1682 JD |
1655 | } |
1656 | } | |
1657 | ||
1658 | /* | |
1659 | * relay_start: send an acknowledgment to the client to tell if we are | |
1660 | * ready to receive data. We are ready if a session is established. | |
1661 | */ | |
5312a3ed JG |
1662 | static int relay_start(const struct lttcomm_relayd_hdr *recv_hdr, |
1663 | struct relay_connection *conn, | |
1664 | const struct lttng_buffer_view *payload) | |
b8aa1682 | 1665 | { |
5312a3ed JG |
1666 | int ret = 0; |
1667 | ssize_t send_ret; | |
b8aa1682 | 1668 | struct lttcomm_relayd_generic_reply reply; |
58eb9381 | 1669 | struct relay_session *session = conn->session; |
b8aa1682 JD |
1670 | |
1671 | if (!session) { | |
1672 | DBG("Trying to start the streaming without a session established"); | |
f73fabfd | 1673 | ret = htobe32(LTTNG_ERR_UNK); |
b8aa1682 JD |
1674 | } |
1675 | ||
53efb85a | 1676 | memset(&reply, 0, sizeof(reply)); |
5312a3ed JG |
1677 | reply.ret_code = htobe32(LTTNG_OK); |
1678 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, | |
1679 | sizeof(reply), 0); | |
1680 | if (send_ret < (ssize_t) sizeof(reply)) { | |
1681 | ERR("Failed to send \"relay_start\" command reply (ret = %zd)", | |
1682 | send_ret); | |
1683 | ret = -1; | |
b8aa1682 JD |
1684 | } |
1685 | ||
1686 | return ret; | |
1687 | } | |
1688 | ||
b8aa1682 | 1689 | /* |
7591bab1 | 1690 | * relay_recv_metadata: receive the metadata for the session. |
b8aa1682 | 1691 | */ |
5312a3ed JG |
1692 | static int relay_recv_metadata(const struct lttcomm_relayd_hdr *recv_hdr, |
1693 | struct relay_connection *conn, | |
1694 | const struct lttng_buffer_view *payload) | |
b8aa1682 | 1695 | { |
32d1569c | 1696 | int ret = 0; |
58eb9381 | 1697 | struct relay_session *session = conn->session; |
5312a3ed | 1698 | struct lttcomm_relayd_metadata_payload metadata_payload_header; |
b8aa1682 | 1699 | struct relay_stream *metadata_stream; |
5312a3ed | 1700 | uint64_t metadata_payload_size; |
c35f9726 | 1701 | struct lttng_buffer_view packet_view; |
b8aa1682 JD |
1702 | |
1703 | if (!session) { | |
1704 | ERR("Metadata sent before version check"); | |
1705 | ret = -1; | |
1706 | goto end; | |
1707 | } | |
1708 | ||
5312a3ed | 1709 | if (recv_hdr->data_size < sizeof(struct lttcomm_relayd_metadata_payload)) { |
f6416125 MD |
1710 | ERR("Incorrect data size"); |
1711 | ret = -1; | |
1712 | goto end; | |
1713 | } | |
5312a3ed JG |
1714 | metadata_payload_size = recv_hdr->data_size - |
1715 | sizeof(struct lttcomm_relayd_metadata_payload); | |
f6416125 | 1716 | |
5312a3ed JG |
1717 | memcpy(&metadata_payload_header, payload->data, |
1718 | sizeof(metadata_payload_header)); | |
1719 | metadata_payload_header.stream_id = be64toh( | |
1720 | metadata_payload_header.stream_id); | |
1721 | metadata_payload_header.padding_size = be32toh( | |
1722 | metadata_payload_header.padding_size); | |
9d1bbf21 | 1723 | |
5312a3ed | 1724 | metadata_stream = stream_get_by_id(metadata_payload_header.stream_id); |
b8aa1682 JD |
1725 | if (!metadata_stream) { |
1726 | ret = -1; | |
7591bab1 | 1727 | goto end; |
b8aa1682 JD |
1728 | } |
1729 | ||
c35f9726 JG |
1730 | packet_view = lttng_buffer_view_from_view(payload, |
1731 | sizeof(metadata_payload_header), metadata_payload_size); | |
1732 | if (!packet_view.data) { | |
1733 | ERR("Invalid metadata packet length announced by header"); | |
b8aa1682 | 1734 | ret = -1; |
7591bab1 | 1735 | goto end_put; |
b8aa1682 | 1736 | } |
1d4dfdef | 1737 | |
c35f9726 JG |
1738 | pthread_mutex_lock(&metadata_stream->lock); |
1739 | ret = stream_write(metadata_stream, &packet_view, | |
5312a3ed | 1740 | metadata_payload_header.padding_size); |
c35f9726 JG |
1741 | pthread_mutex_unlock(&metadata_stream->lock); |
1742 | if (ret){ | |
5312a3ed | 1743 | ret = -1; |
7591bab1 | 1744 | goto end_put; |
1d4dfdef | 1745 | } |
7591bab1 | 1746 | end_put: |
7591bab1 | 1747 | stream_put(metadata_stream); |
b8aa1682 JD |
1748 | end: |
1749 | return ret; | |
1750 | } | |
1751 | ||
1752 | /* | |
1753 | * relay_send_version: send relayd version number | |
1754 | */ | |
5312a3ed JG |
1755 | static int relay_send_version(const struct lttcomm_relayd_hdr *recv_hdr, |
1756 | struct relay_connection *conn, | |
1757 | const struct lttng_buffer_view *payload) | |
b8aa1682 | 1758 | { |
7f51dcba | 1759 | int ret; |
5312a3ed | 1760 | ssize_t send_ret; |
092b6259 | 1761 | struct lttcomm_relayd_version reply, msg; |
87cb6359 | 1762 | bool compatible = true; |
b8aa1682 | 1763 | |
5312a3ed | 1764 | conn->version_check_done = true; |
b8aa1682 | 1765 | |
092b6259 | 1766 | /* Get version from the other side. */ |
5312a3ed JG |
1767 | if (payload->size < sizeof(msg)) { |
1768 | ERR("Unexpected payload size in \"relay_send_version\": expected >= %zu bytes, got %zu bytes", | |
1769 | sizeof(msg), payload->size); | |
092b6259 | 1770 | ret = -1; |
092b6259 DG |
1771 | goto end; |
1772 | } | |
1773 | ||
5312a3ed JG |
1774 | memcpy(&msg, payload->data, sizeof(msg)); |
1775 | msg.major = be32toh(msg.major); | |
1776 | msg.minor = be32toh(msg.minor); | |
1777 | ||
53efb85a | 1778 | memset(&reply, 0, sizeof(reply)); |
d83a952c MD |
1779 | reply.major = RELAYD_VERSION_COMM_MAJOR; |
1780 | reply.minor = RELAYD_VERSION_COMM_MINOR; | |
d4519fa3 JD |
1781 | |
1782 | /* Major versions must be the same */ | |
5312a3ed | 1783 | if (reply.major != msg.major) { |
6151a90f | 1784 | DBG("Incompatible major versions (%u vs %u), deleting session", |
5312a3ed | 1785 | reply.major, msg.major); |
87cb6359 | 1786 | compatible = false; |
d4519fa3 JD |
1787 | } |
1788 | ||
58eb9381 | 1789 | conn->major = reply.major; |
0f907de1 | 1790 | /* We adapt to the lowest compatible version */ |
5312a3ed | 1791 | if (reply.minor <= msg.minor) { |
58eb9381 | 1792 | conn->minor = reply.minor; |
0f907de1 | 1793 | } else { |
5312a3ed | 1794 | conn->minor = msg.minor; |
0f907de1 JD |
1795 | } |
1796 | ||
6151a90f JD |
1797 | reply.major = htobe32(reply.major); |
1798 | reply.minor = htobe32(reply.minor); | |
5312a3ed JG |
1799 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
1800 | sizeof(reply), 0); | |
1801 | if (send_ret < (ssize_t) sizeof(reply)) { | |
1802 | ERR("Failed to send \"send version\" command reply (ret = %zd)", | |
1803 | send_ret); | |
1804 | ret = -1; | |
1805 | goto end; | |
1806 | } else { | |
1807 | ret = 0; | |
6151a90f JD |
1808 | } |
1809 | ||
87cb6359 JD |
1810 | if (!compatible) { |
1811 | ret = -1; | |
1812 | goto end; | |
1813 | } | |
1814 | ||
58eb9381 DG |
1815 | DBG("Version check done using protocol %u.%u", conn->major, |
1816 | conn->minor); | |
b8aa1682 JD |
1817 | |
1818 | end: | |
1819 | return ret; | |
1820 | } | |
1821 | ||
c8f59ee5 | 1822 | /* |
6d805429 | 1823 | * Check for data pending for a given stream id from the session daemon. |
c8f59ee5 | 1824 | */ |
5312a3ed JG |
1825 | static int relay_data_pending(const struct lttcomm_relayd_hdr *recv_hdr, |
1826 | struct relay_connection *conn, | |
1827 | const struct lttng_buffer_view *payload) | |
c8f59ee5 | 1828 | { |
58eb9381 | 1829 | struct relay_session *session = conn->session; |
6d805429 | 1830 | struct lttcomm_relayd_data_pending msg; |
c8f59ee5 DG |
1831 | struct lttcomm_relayd_generic_reply reply; |
1832 | struct relay_stream *stream; | |
5312a3ed | 1833 | ssize_t send_ret; |
c8f59ee5 | 1834 | int ret; |
298a25ca | 1835 | uint64_t stream_seq; |
c8f59ee5 | 1836 | |
6d805429 | 1837 | DBG("Data pending command received"); |
c8f59ee5 | 1838 | |
5312a3ed | 1839 | if (!session || !conn->version_check_done) { |
c8f59ee5 DG |
1840 | ERR("Trying to check for data before version check"); |
1841 | ret = -1; | |
1842 | goto end_no_session; | |
1843 | } | |
1844 | ||
5312a3ed JG |
1845 | if (payload->size < sizeof(msg)) { |
1846 | ERR("Unexpected payload size in \"relay_data_pending\": expected >= %zu bytes, got %zu bytes", | |
1847 | sizeof(msg), payload->size); | |
c8f59ee5 DG |
1848 | ret = -1; |
1849 | goto end_no_session; | |
1850 | } | |
5312a3ed JG |
1851 | memcpy(&msg, payload->data, sizeof(msg)); |
1852 | msg.stream_id = be64toh(msg.stream_id); | |
1853 | msg.last_net_seq_num = be64toh(msg.last_net_seq_num); | |
c8f59ee5 | 1854 | |
5312a3ed | 1855 | stream = stream_get_by_id(msg.stream_id); |
de91f48a | 1856 | if (stream == NULL) { |
c8f59ee5 | 1857 | ret = -1; |
7591bab1 | 1858 | goto end; |
c8f59ee5 DG |
1859 | } |
1860 | ||
7591bab1 MD |
1861 | pthread_mutex_lock(&stream->lock); |
1862 | ||
298a25ca JG |
1863 | if (session_streams_have_index(session)) { |
1864 | /* | |
1865 | * Ensure that both the index and stream data have been | |
1866 | * flushed up to the requested point. | |
1867 | */ | |
a8f9f353 | 1868 | stream_seq = min(stream->prev_data_seq, stream->prev_index_seq); |
298a25ca | 1869 | } else { |
a8f9f353 | 1870 | stream_seq = stream->prev_data_seq; |
298a25ca | 1871 | } |
a8f9f353 | 1872 | DBG("Data pending for stream id %" PRIu64 ": prev_data_seq %" PRIu64 |
298a25ca JG |
1873 | ", prev_index_seq %" PRIu64 |
1874 | ", and last_seq %" PRIu64, msg.stream_id, | |
a8f9f353 | 1875 | stream->prev_data_seq, stream->prev_index_seq, |
298a25ca | 1876 | msg.last_net_seq_num); |
c8f59ee5 | 1877 | |
33832e64 | 1878 | /* Avoid wrapping issue */ |
298a25ca | 1879 | if (((int64_t) (stream_seq - msg.last_net_seq_num)) >= 0) { |
6d805429 | 1880 | /* Data has in fact been written and is NOT pending */ |
c8f59ee5 | 1881 | ret = 0; |
6d805429 DG |
1882 | } else { |
1883 | /* Data still being streamed thus pending */ | |
1884 | ret = 1; | |
c8f59ee5 DG |
1885 | } |
1886 | ||
7591bab1 MD |
1887 | stream->data_pending_check_done = true; |
1888 | pthread_mutex_unlock(&stream->lock); | |
f7079f67 | 1889 | |
7591bab1 MD |
1890 | stream_put(stream); |
1891 | end: | |
c8f59ee5 | 1892 | |
53efb85a | 1893 | memset(&reply, 0, sizeof(reply)); |
c8f59ee5 | 1894 | reply.ret_code = htobe32(ret); |
5312a3ed JG |
1895 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
1896 | if (send_ret < (ssize_t) sizeof(reply)) { | |
1897 | ERR("Failed to send \"data pending\" command reply (ret = %zd)", | |
1898 | send_ret); | |
1899 | ret = -1; | |
c8f59ee5 DG |
1900 | } |
1901 | ||
1902 | end_no_session: | |
1903 | return ret; | |
1904 | } | |
1905 | ||
1906 | /* | |
1907 | * Wait for the control socket to reach a quiescent state. | |
1908 | * | |
7591bab1 MD |
1909 | * Note that for now, when receiving this command from the session |
1910 | * daemon, this means that every subsequent commands or data received on | |
1911 | * the control socket has been handled. So, this is why we simply return | |
1912 | * OK here. | |
c8f59ee5 | 1913 | */ |
5312a3ed JG |
1914 | static int relay_quiescent_control(const struct lttcomm_relayd_hdr *recv_hdr, |
1915 | struct relay_connection *conn, | |
1916 | const struct lttng_buffer_view *payload) | |
c8f59ee5 DG |
1917 | { |
1918 | int ret; | |
5312a3ed | 1919 | ssize_t send_ret; |
ad7051c0 | 1920 | struct relay_stream *stream; |
ad7051c0 | 1921 | struct lttcomm_relayd_quiescent_control msg; |
c8f59ee5 DG |
1922 | struct lttcomm_relayd_generic_reply reply; |
1923 | ||
1924 | DBG("Checking quiescent state on control socket"); | |
1925 | ||
5312a3ed | 1926 | if (!conn->session || !conn->version_check_done) { |
ad7051c0 DG |
1927 | ERR("Trying to check for data before version check"); |
1928 | ret = -1; | |
1929 | goto end_no_session; | |
1930 | } | |
1931 | ||
5312a3ed JG |
1932 | if (payload->size < sizeof(msg)) { |
1933 | ERR("Unexpected payload size in \"relay_quiescent_control\": expected >= %zu bytes, got %zu bytes", | |
1934 | sizeof(msg), payload->size); | |
ad7051c0 DG |
1935 | ret = -1; |
1936 | goto end_no_session; | |
1937 | } | |
5312a3ed JG |
1938 | memcpy(&msg, payload->data, sizeof(msg)); |
1939 | msg.stream_id = be64toh(msg.stream_id); | |
ad7051c0 | 1940 | |
5312a3ed | 1941 | stream = stream_get_by_id(msg.stream_id); |
7591bab1 MD |
1942 | if (!stream) { |
1943 | goto reply; | |
1944 | } | |
1945 | pthread_mutex_lock(&stream->lock); | |
1946 | stream->data_pending_check_done = true; | |
1947 | pthread_mutex_unlock(&stream->lock); | |
5312a3ed JG |
1948 | |
1949 | DBG("Relay quiescent control pending flag set to %" PRIu64, msg.stream_id); | |
7591bab1 MD |
1950 | stream_put(stream); |
1951 | reply: | |
53efb85a | 1952 | memset(&reply, 0, sizeof(reply)); |
c8f59ee5 | 1953 | reply.ret_code = htobe32(LTTNG_OK); |
5312a3ed JG |
1954 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
1955 | if (send_ret < (ssize_t) sizeof(reply)) { | |
1956 | ERR("Failed to send \"quiescent control\" command reply (ret = %zd)", | |
1957 | send_ret); | |
1958 | ret = -1; | |
1959 | } else { | |
1960 | ret = 0; | |
c8f59ee5 DG |
1961 | } |
1962 | ||
ad7051c0 | 1963 | end_no_session: |
c8f59ee5 DG |
1964 | return ret; |
1965 | } | |
1966 | ||
f7079f67 | 1967 | /* |
7591bab1 MD |
1968 | * Initialize a data pending command. This means that a consumer is about |
1969 | * to ask for data pending for each stream it holds. Simply iterate over | |
1970 | * all streams of a session and set the data_pending_check_done flag. | |
f7079f67 DG |
1971 | * |
1972 | * This command returns to the client a LTTNG_OK code. | |
1973 | */ | |
5312a3ed JG |
1974 | static int relay_begin_data_pending(const struct lttcomm_relayd_hdr *recv_hdr, |
1975 | struct relay_connection *conn, | |
1976 | const struct lttng_buffer_view *payload) | |
f7079f67 DG |
1977 | { |
1978 | int ret; | |
5312a3ed | 1979 | ssize_t send_ret; |
f7079f67 DG |
1980 | struct lttng_ht_iter iter; |
1981 | struct lttcomm_relayd_begin_data_pending msg; | |
1982 | struct lttcomm_relayd_generic_reply reply; | |
1983 | struct relay_stream *stream; | |
f7079f67 DG |
1984 | |
1985 | assert(recv_hdr); | |
58eb9381 | 1986 | assert(conn); |
f7079f67 DG |
1987 | |
1988 | DBG("Init streams for data pending"); | |
1989 | ||
5312a3ed | 1990 | if (!conn->session || !conn->version_check_done) { |
f7079f67 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_begin_data_pending\": expected >= %zu bytes, got %zu bytes", | |
1998 | sizeof(msg), payload->size); | |
f7079f67 DG |
1999 | ret = -1; |
2000 | goto end_no_session; | |
2001 | } | |
5312a3ed JG |
2002 | memcpy(&msg, payload->data, sizeof(msg)); |
2003 | msg.session_id = be64toh(msg.session_id); | |
f7079f67 DG |
2004 | |
2005 | /* | |
7591bab1 MD |
2006 | * Iterate over all streams to set the begin data pending flag. |
2007 | * For now, the streams are indexed by stream handle so we have | |
2008 | * to iterate over all streams to find the one associated with | |
2009 | * the right session_id. | |
f7079f67 DG |
2010 | */ |
2011 | rcu_read_lock(); | |
d3e2ba59 | 2012 | cds_lfht_for_each_entry(relay_streams_ht->ht, &iter.iter, stream, |
2a174661 | 2013 | node.node) { |
7591bab1 MD |
2014 | if (!stream_get(stream)) { |
2015 | continue; | |
2016 | } | |
5312a3ed | 2017 | if (stream->trace->session->id == msg.session_id) { |
7591bab1 MD |
2018 | pthread_mutex_lock(&stream->lock); |
2019 | stream->data_pending_check_done = false; | |
2020 | pthread_mutex_unlock(&stream->lock); | |
f7079f67 DG |
2021 | DBG("Set begin data pending flag to stream %" PRIu64, |
2022 | stream->stream_handle); | |
2023 | } | |
7591bab1 | 2024 | stream_put(stream); |
f7079f67 DG |
2025 | } |
2026 | rcu_read_unlock(); | |
2027 | ||
53efb85a | 2028 | memset(&reply, 0, sizeof(reply)); |
f7079f67 DG |
2029 | /* All good, send back reply. */ |
2030 | reply.ret_code = htobe32(LTTNG_OK); | |
2031 | ||
5312a3ed JG |
2032 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
2033 | if (send_ret < (ssize_t) sizeof(reply)) { | |
2034 | ERR("Failed to send \"begin data pending\" command reply (ret = %zd)", | |
2035 | send_ret); | |
2036 | ret = -1; | |
2037 | } else { | |
2038 | ret = 0; | |
f7079f67 DG |
2039 | } |
2040 | ||
2041 | end_no_session: | |
2042 | return ret; | |
2043 | } | |
2044 | ||
2045 | /* | |
7591bab1 MD |
2046 | * End data pending command. This will check, for a given session id, if |
2047 | * each stream associated with it has its data_pending_check_done flag | |
2048 | * set. If not, this means that the client lost track of the stream but | |
2049 | * the data is still being streamed on our side. In this case, we inform | |
2050 | * the client that data is in flight. | |
f7079f67 DG |
2051 | * |
2052 | * Return to the client if there is data in flight or not with a ret_code. | |
2053 | */ | |
5312a3ed JG |
2054 | static int relay_end_data_pending(const struct lttcomm_relayd_hdr *recv_hdr, |
2055 | struct relay_connection *conn, | |
2056 | const struct lttng_buffer_view *payload) | |
f7079f67 DG |
2057 | { |
2058 | int ret; | |
5312a3ed | 2059 | ssize_t send_ret; |
f7079f67 DG |
2060 | struct lttng_ht_iter iter; |
2061 | struct lttcomm_relayd_end_data_pending msg; | |
2062 | struct lttcomm_relayd_generic_reply reply; | |
2063 | struct relay_stream *stream; | |
f7079f67 DG |
2064 | uint32_t is_data_inflight = 0; |
2065 | ||
f7079f67 DG |
2066 | DBG("End data pending command"); |
2067 | ||
5312a3ed | 2068 | if (!conn->session || !conn->version_check_done) { |
f7079f67 DG |
2069 | ERR("Trying to check for data before version check"); |
2070 | ret = -1; | |
2071 | goto end_no_session; | |
2072 | } | |
2073 | ||
5312a3ed JG |
2074 | if (payload->size < sizeof(msg)) { |
2075 | ERR("Unexpected payload size in \"relay_end_data_pending\": expected >= %zu bytes, got %zu bytes", | |
2076 | sizeof(msg), payload->size); | |
f7079f67 DG |
2077 | ret = -1; |
2078 | goto end_no_session; | |
2079 | } | |
5312a3ed JG |
2080 | memcpy(&msg, payload->data, sizeof(msg)); |
2081 | msg.session_id = be64toh(msg.session_id); | |
f7079f67 | 2082 | |
7591bab1 MD |
2083 | /* |
2084 | * Iterate over all streams to see if the begin data pending | |
2085 | * flag is set. | |
2086 | */ | |
f7079f67 | 2087 | rcu_read_lock(); |
d3e2ba59 | 2088 | cds_lfht_for_each_entry(relay_streams_ht->ht, &iter.iter, stream, |
2a174661 | 2089 | node.node) { |
7591bab1 MD |
2090 | if (!stream_get(stream)) { |
2091 | continue; | |
2092 | } | |
5312a3ed | 2093 | if (stream->trace->session->id != msg.session_id) { |
7591bab1 MD |
2094 | stream_put(stream); |
2095 | continue; | |
2096 | } | |
2097 | pthread_mutex_lock(&stream->lock); | |
2098 | if (!stream->data_pending_check_done) { | |
298a25ca JG |
2099 | uint64_t stream_seq; |
2100 | ||
2101 | if (session_streams_have_index(conn->session)) { | |
2102 | /* | |
2103 | * Ensure that both the index and stream data have been | |
2104 | * flushed up to the requested point. | |
2105 | */ | |
a8f9f353 | 2106 | stream_seq = min(stream->prev_data_seq, stream->prev_index_seq); |
298a25ca | 2107 | } else { |
a8f9f353 | 2108 | stream_seq = stream->prev_data_seq; |
298a25ca JG |
2109 | } |
2110 | if (!stream->closed || !(((int64_t) (stream_seq - stream->last_net_seq_num)) >= 0)) { | |
7591bab1 MD |
2111 | is_data_inflight = 1; |
2112 | DBG("Data is still in flight for stream %" PRIu64, | |
2113 | stream->stream_handle); | |
2114 | pthread_mutex_unlock(&stream->lock); | |
2115 | stream_put(stream); | |
2116 | break; | |
2117 | } | |
f7079f67 | 2118 | } |
7591bab1 MD |
2119 | pthread_mutex_unlock(&stream->lock); |
2120 | stream_put(stream); | |
f7079f67 DG |
2121 | } |
2122 | rcu_read_unlock(); | |
2123 | ||
53efb85a | 2124 | memset(&reply, 0, sizeof(reply)); |
f7079f67 DG |
2125 | /* All good, send back reply. */ |
2126 | reply.ret_code = htobe32(is_data_inflight); | |
2127 | ||
5312a3ed JG |
2128 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
2129 | if (send_ret < (ssize_t) sizeof(reply)) { | |
2130 | ERR("Failed to send \"end data pending\" command reply (ret = %zd)", | |
2131 | send_ret); | |
2132 | ret = -1; | |
2133 | } else { | |
2134 | ret = 0; | |
f7079f67 DG |
2135 | } |
2136 | ||
2137 | end_no_session: | |
2138 | return ret; | |
2139 | } | |
2140 | ||
1c20f0e2 JD |
2141 | /* |
2142 | * Receive an index for a specific stream. | |
2143 | * | |
2144 | * Return 0 on success else a negative value. | |
2145 | */ | |
5312a3ed JG |
2146 | static int relay_recv_index(const struct lttcomm_relayd_hdr *recv_hdr, |
2147 | struct relay_connection *conn, | |
2148 | const struct lttng_buffer_view *payload) | |
1c20f0e2 | 2149 | { |
5312a3ed JG |
2150 | int ret; |
2151 | ssize_t send_ret; | |
58eb9381 | 2152 | struct relay_session *session = conn->session; |
1c20f0e2 | 2153 | struct lttcomm_relayd_index index_info; |
1c20f0e2 JD |
2154 | struct lttcomm_relayd_generic_reply reply; |
2155 | struct relay_stream *stream; | |
f8f3885c | 2156 | size_t msg_len; |
1c20f0e2 | 2157 | |
58eb9381 | 2158 | assert(conn); |
1c20f0e2 JD |
2159 | |
2160 | DBG("Relay receiving index"); | |
2161 | ||
5312a3ed | 2162 | if (!session || !conn->version_check_done) { |
1c20f0e2 JD |
2163 | ERR("Trying to close a stream before version check"); |
2164 | ret = -1; | |
2165 | goto end_no_session; | |
2166 | } | |
2167 | ||
f8f3885c MD |
2168 | msg_len = lttcomm_relayd_index_len( |
2169 | lttng_to_index_major(conn->major, conn->minor), | |
2170 | lttng_to_index_minor(conn->major, conn->minor)); | |
5312a3ed JG |
2171 | if (payload->size < msg_len) { |
2172 | ERR("Unexpected payload size in \"relay_recv_index\": expected >= %zu bytes, got %zu bytes", | |
2173 | msg_len, payload->size); | |
1c20f0e2 JD |
2174 | ret = -1; |
2175 | goto end_no_session; | |
2176 | } | |
5312a3ed JG |
2177 | memcpy(&index_info, payload->data, msg_len); |
2178 | index_info.relay_stream_id = be64toh(index_info.relay_stream_id); | |
2179 | index_info.net_seq_num = be64toh(index_info.net_seq_num); | |
2180 | index_info.packet_size = be64toh(index_info.packet_size); | |
2181 | index_info.content_size = be64toh(index_info.content_size); | |
2182 | index_info.timestamp_begin = be64toh(index_info.timestamp_begin); | |
2183 | index_info.timestamp_end = be64toh(index_info.timestamp_end); | |
2184 | index_info.events_discarded = be64toh(index_info.events_discarded); | |
2185 | index_info.stream_id = be64toh(index_info.stream_id); | |
81df238b JR |
2186 | |
2187 | if (conn->minor >= 8) { | |
2188 | index_info.stream_instance_id = | |
2189 | be64toh(index_info.stream_instance_id); | |
2190 | index_info.packet_seq_num = be64toh(index_info.packet_seq_num); | |
2191 | } | |
5312a3ed JG |
2192 | |
2193 | stream = stream_get_by_id(index_info.relay_stream_id); | |
1c20f0e2 | 2194 | if (!stream) { |
7591bab1 | 2195 | ERR("stream_get_by_id not found"); |
1c20f0e2 | 2196 | ret = -1; |
7591bab1 | 2197 | goto end; |
1c20f0e2 | 2198 | } |
d3e2ba59 | 2199 | |
c35f9726 JG |
2200 | pthread_mutex_lock(&stream->lock); |
2201 | ret = stream_add_index(stream, &index_info); | |
2202 | pthread_mutex_unlock(&stream->lock); | |
2203 | if (ret) { | |
7591bab1 MD |
2204 | goto end_stream_put; |
2205 | } | |
1c20f0e2 | 2206 | |
7591bab1 | 2207 | end_stream_put: |
7591bab1 | 2208 | stream_put(stream); |
7591bab1 | 2209 | end: |
53efb85a | 2210 | memset(&reply, 0, sizeof(reply)); |
1c20f0e2 JD |
2211 | if (ret < 0) { |
2212 | reply.ret_code = htobe32(LTTNG_ERR_UNK); | |
2213 | } else { | |
2214 | reply.ret_code = htobe32(LTTNG_OK); | |
2215 | } | |
58eb9381 | 2216 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
5312a3ed JG |
2217 | if (send_ret < (ssize_t) sizeof(reply)) { |
2218 | ERR("Failed to send \"recv index\" command reply (ret = %zd)", send_ret); | |
2219 | ret = -1; | |
1c20f0e2 JD |
2220 | } |
2221 | ||
2222 | end_no_session: | |
2223 | return ret; | |
2224 | } | |
2225 | ||
a4baae1b JD |
2226 | /* |
2227 | * Receive the streams_sent message. | |
2228 | * | |
2229 | * Return 0 on success else a negative value. | |
2230 | */ | |
5312a3ed JG |
2231 | static int relay_streams_sent(const struct lttcomm_relayd_hdr *recv_hdr, |
2232 | struct relay_connection *conn, | |
2233 | const struct lttng_buffer_view *payload) | |
a4baae1b | 2234 | { |
5312a3ed JG |
2235 | int ret; |
2236 | ssize_t send_ret; | |
a4baae1b JD |
2237 | struct lttcomm_relayd_generic_reply reply; |
2238 | ||
58eb9381 | 2239 | assert(conn); |
a4baae1b JD |
2240 | |
2241 | DBG("Relay receiving streams_sent"); | |
2242 | ||
5312a3ed | 2243 | if (!conn->session || !conn->version_check_done) { |
a4baae1b JD |
2244 | ERR("Trying to close a stream before version check"); |
2245 | ret = -1; | |
2246 | goto end_no_session; | |
2247 | } | |
2248 | ||
2249 | /* | |
7591bab1 MD |
2250 | * Publish every pending stream in the connection recv list which are |
2251 | * now ready to be used by the viewer. | |
4a9daf17 | 2252 | */ |
7591bab1 | 2253 | publish_connection_local_streams(conn); |
4a9daf17 | 2254 | |
53efb85a | 2255 | memset(&reply, 0, sizeof(reply)); |
a4baae1b | 2256 | reply.ret_code = htobe32(LTTNG_OK); |
58eb9381 | 2257 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
5312a3ed JG |
2258 | if (send_ret < (ssize_t) sizeof(reply)) { |
2259 | ERR("Failed to send \"streams sent\" command reply (ret = %zd)", | |
2260 | send_ret); | |
2261 | ret = -1; | |
a4baae1b JD |
2262 | } else { |
2263 | /* Success. */ | |
2264 | ret = 0; | |
2265 | } | |
2266 | ||
2267 | end_no_session: | |
2268 | return ret; | |
2269 | } | |
2270 | ||
d3ecc550 | 2271 | /* |
c35f9726 JG |
2272 | * relay_rotate_session_stream: rotate a stream to a new tracefile for the |
2273 | * session rotation feature (not the tracefile rotation feature). | |
d3ecc550 | 2274 | */ |
c35f9726 JG |
2275 | static int relay_rotate_session_streams( |
2276 | const struct lttcomm_relayd_hdr *recv_hdr, | |
5312a3ed JG |
2277 | struct relay_connection *conn, |
2278 | const struct lttng_buffer_view *payload) | |
d3ecc550 | 2279 | { |
30b9d5ab | 2280 | int ret = 0; |
c35f9726 | 2281 | uint32_t i; |
5312a3ed | 2282 | ssize_t send_ret; |
c35f9726 | 2283 | enum lttng_error_code reply_code = LTTNG_ERR_UNK; |
d3ecc550 | 2284 | struct relay_session *session = conn->session; |
c35f9726 JG |
2285 | struct lttcomm_relayd_rotate_streams rotate_streams; |
2286 | struct lttcomm_relayd_generic_reply reply = {}; | |
2287 | struct relay_stream *stream = NULL; | |
2288 | const size_t header_len = sizeof(struct lttcomm_relayd_rotate_streams); | |
2289 | struct lttng_trace_chunk *next_trace_chunk = NULL; | |
2290 | struct lttng_buffer_view stream_positions; | |
70626904 JG |
2291 | char chunk_id_buf[MAX_INT_DEC_LEN(uint64_t)]; |
2292 | const char *chunk_id_str = "none"; | |
d3ecc550 | 2293 | |
d3ecc550 JD |
2294 | if (!session || !conn->version_check_done) { |
2295 | ERR("Trying to rotate a stream before version check"); | |
2296 | ret = -1; | |
2297 | goto end_no_reply; | |
2298 | } | |
2299 | ||
2300 | if (session->major == 2 && session->minor < 11) { | |
2301 | ERR("Unsupported feature before 2.11"); | |
2302 | ret = -1; | |
2303 | goto end_no_reply; | |
2304 | } | |
2305 | ||
5312a3ed JG |
2306 | if (payload->size < header_len) { |
2307 | ERR("Unexpected payload size in \"relay_rotate_session_stream\": expected >= %zu bytes, got %zu bytes", | |
2308 | header_len, payload->size); | |
d3ecc550 JD |
2309 | ret = -1; |
2310 | goto end_no_reply; | |
2311 | } | |
2312 | ||
c35f9726 | 2313 | memcpy(&rotate_streams, payload->data, header_len); |
5312a3ed | 2314 | |
c35f9726 JG |
2315 | /* Convert header to host endianness. */ |
2316 | rotate_streams = (typeof(rotate_streams)) { | |
2317 | .stream_count = be32toh(rotate_streams.stream_count), | |
2318 | .new_chunk_id = (typeof(rotate_streams.new_chunk_id)) { | |
2319 | .is_set = !!rotate_streams.new_chunk_id.is_set, | |
2320 | .value = be64toh(rotate_streams.new_chunk_id.value), | |
2321 | } | |
2322 | }; | |
d3ecc550 | 2323 | |
c35f9726 JG |
2324 | if (rotate_streams.new_chunk_id.is_set) { |
2325 | /* | |
2326 | * Retrieve the trace chunk the stream must transition to. As | |
2327 | * per the protocol, this chunk should have been created | |
2328 | * before this command is received. | |
2329 | */ | |
2330 | next_trace_chunk = sessiond_trace_chunk_registry_get_chunk( | |
2331 | sessiond_trace_chunk_registry, | |
2332 | session->sessiond_uuid, session->id, | |
2333 | rotate_streams.new_chunk_id.value); | |
2334 | if (!next_trace_chunk) { | |
2335 | char uuid_str[UUID_STR_LEN]; | |
2336 | ||
2337 | lttng_uuid_to_str(session->sessiond_uuid, uuid_str); | |
2338 | ERR("Unknown next trace chunk in ROTATE_STREAMS command: sessiond_uuid = {%s}, session_id = %" PRIu64 | |
2339 | ", trace_chunk_id = %" PRIu64, | |
2340 | uuid_str, session->id, | |
2341 | rotate_streams.new_chunk_id.value); | |
2342 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
2343 | ret = -1; | |
2344 | goto end; | |
2345 | } | |
70626904 JG |
2346 | |
2347 | ret = snprintf(chunk_id_buf, sizeof(chunk_id_buf), "%" PRIu64, | |
2348 | rotate_streams.new_chunk_id.value); | |
2349 | if (ret < 0 || ret >= sizeof(chunk_id_buf)) { | |
2350 | chunk_id_str = "formatting error"; | |
2351 | } else { | |
2352 | chunk_id_str = chunk_id_buf; | |
2353 | } | |
ecd1a12f | 2354 | session->has_rotated = true; |
d3ecc550 JD |
2355 | } |
2356 | ||
70626904 JG |
2357 | DBG("Rotate %" PRIu32 " streams of session \"%s\" to chunk \"%s\"", |
2358 | rotate_streams.stream_count, session->session_name, | |
2359 | chunk_id_str); | |
2360 | ||
c35f9726 JG |
2361 | stream_positions = lttng_buffer_view_from_view(payload, |
2362 | sizeof(rotate_streams), -1); | |
2363 | if (!stream_positions.data || | |
2364 | stream_positions.size < | |
2365 | (rotate_streams.stream_count * | |
2366 | sizeof(struct lttcomm_relayd_stream_rotation_position))) { | |
2367 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
d3ecc550 | 2368 | ret = -1; |
5312a3ed | 2369 | goto end; |
d3ecc550 JD |
2370 | } |
2371 | ||
c35f9726 JG |
2372 | for (i = 0; i < rotate_streams.stream_count; i++) { |
2373 | struct lttcomm_relayd_stream_rotation_position *position_comm = | |
2374 | &((typeof(position_comm)) stream_positions.data)[i]; | |
2375 | const struct lttcomm_relayd_stream_rotation_position pos = { | |
2376 | .stream_id = be64toh(position_comm->stream_id), | |
2377 | .rotate_at_seq_num = be64toh( | |
2378 | position_comm->rotate_at_seq_num), | |
2379 | }; | |
5312a3ed | 2380 | |
c35f9726 JG |
2381 | stream = stream_get_by_id(pos.stream_id); |
2382 | if (!stream) { | |
2383 | reply_code = LTTNG_ERR_INVALID; | |
2384 | ret = -1; | |
2385 | goto end; | |
c6db3843 JG |
2386 | } |
2387 | ||
c35f9726 JG |
2388 | pthread_mutex_lock(&stream->lock); |
2389 | ret = stream_set_pending_rotation(stream, next_trace_chunk, | |
2390 | pos.rotate_at_seq_num); | |
2391 | pthread_mutex_unlock(&stream->lock); | |
2392 | if (ret) { | |
2393 | reply_code = LTTNG_ERR_FILE_CREATION_ERROR; | |
2394 | goto end; | |
c6db3843 | 2395 | } |
c35f9726 JG |
2396 | |
2397 | stream_put(stream); | |
2398 | stream = NULL; | |
d3ecc550 JD |
2399 | } |
2400 | ||
c35f9726 | 2401 | reply_code = LTTNG_OK; |
eaeb64a9 | 2402 | ret = 0; |
d3ecc550 | 2403 | end: |
c35f9726 JG |
2404 | if (stream) { |
2405 | stream_put(stream); | |
d3ecc550 | 2406 | } |
c35f9726 JG |
2407 | |
2408 | reply.ret_code = htobe32((uint32_t) reply_code); | |
d3ecc550 JD |
2409 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
2410 | sizeof(struct lttcomm_relayd_generic_reply), 0); | |
5312a3ed JG |
2411 | if (send_ret < (ssize_t) sizeof(reply)) { |
2412 | ERR("Failed to send \"rotate session stream\" command reply (ret = %zd)", | |
2413 | send_ret); | |
2414 | ret = -1; | |
d3ecc550 | 2415 | } |
d3ecc550 | 2416 | end_no_reply: |
c35f9726 | 2417 | lttng_trace_chunk_put(next_trace_chunk); |
d3ecc550 JD |
2418 | return ret; |
2419 | } | |
2420 | ||
e5add6d0 | 2421 | |
e5add6d0 JG |
2422 | |
2423 | /* | |
2424 | * relay_create_trace_chunk: create a new trace chunk | |
2425 | */ | |
2426 | static int relay_create_trace_chunk(const struct lttcomm_relayd_hdr *recv_hdr, | |
2427 | struct relay_connection *conn, | |
2428 | const struct lttng_buffer_view *payload) | |
2429 | { | |
2430 | int ret = 0; | |
2431 | ssize_t send_ret; | |
2432 | struct relay_session *session = conn->session; | |
2433 | struct lttcomm_relayd_create_trace_chunk *msg; | |
2434 | struct lttcomm_relayd_generic_reply reply = {}; | |
2435 | struct lttng_buffer_view header_view; | |
2436 | struct lttng_buffer_view chunk_name_view; | |
2437 | struct lttng_trace_chunk *chunk = NULL, *published_chunk = NULL; | |
2438 | enum lttng_error_code reply_code = LTTNG_OK; | |
2439 | enum lttng_trace_chunk_status chunk_status; | |
2440 | struct lttng_directory_handle session_output; | |
2441 | ||
2442 | if (!session || !conn->version_check_done) { | |
2443 | ERR("Trying to create a trace chunk before version check"); | |
2444 | ret = -1; | |
2445 | goto end_no_reply; | |
2446 | } | |
2447 | ||
2448 | if (session->major == 2 && session->minor < 11) { | |
2449 | ERR("Chunk creation command is unsupported before 2.11"); | |
2450 | ret = -1; | |
2451 | goto end_no_reply; | |
2452 | } | |
2453 | ||
2454 | header_view = lttng_buffer_view_from_view(payload, 0, sizeof(*msg)); | |
2455 | if (!header_view.data) { | |
2456 | ERR("Failed to receive payload of chunk creation command"); | |
2457 | ret = -1; | |
2458 | goto end_no_reply; | |
2459 | } | |
2460 | ||
2461 | /* Convert to host endianness. */ | |
2462 | msg = (typeof(msg)) header_view.data; | |
2463 | msg->chunk_id = be64toh(msg->chunk_id); | |
2464 | msg->creation_timestamp = be64toh(msg->creation_timestamp); | |
2465 | msg->override_name_length = be32toh(msg->override_name_length); | |
2466 | ||
2467 | chunk = lttng_trace_chunk_create( | |
2468 | msg->chunk_id, msg->creation_timestamp); | |
2469 | if (!chunk) { | |
2470 | ERR("Failed to create trace chunk in trace chunk creation command"); | |
2471 | ret = -1; | |
2472 | reply_code = LTTNG_ERR_NOMEM; | |
2473 | goto end; | |
2474 | } | |
2475 | ||
2476 | if (msg->override_name_length) { | |
2477 | const char *name; | |
2478 | ||
2479 | chunk_name_view = lttng_buffer_view_from_view(payload, | |
2480 | sizeof(*msg), | |
2481 | msg->override_name_length); | |
2482 | name = chunk_name_view.data; | |
2483 | if (!name || name[msg->override_name_length - 1]) { | |
2484 | ERR("Failed to receive payload of chunk creation command"); | |
2485 | ret = -1; | |
2486 | reply_code = LTTNG_ERR_INVALID; | |
2487 | goto end; | |
2488 | } | |
2489 | ||
2490 | chunk_status = lttng_trace_chunk_override_name( | |
2491 | chunk, chunk_name_view.data); | |
2492 | switch (chunk_status) { | |
2493 | case LTTNG_TRACE_CHUNK_STATUS_OK: | |
2494 | break; | |
2495 | case LTTNG_TRACE_CHUNK_STATUS_INVALID_ARGUMENT: | |
2496 | ERR("Failed to set the name of new trace chunk in trace chunk creation command (invalid name)"); | |
2497 | reply_code = LTTNG_ERR_INVALID; | |
2498 | ret = -1; | |
2499 | goto end; | |
2500 | default: | |
2501 | ERR("Failed to set the name of new trace chunk in trace chunk creation command (unknown error)"); | |
2502 | reply_code = LTTNG_ERR_UNK; | |
2503 | ret = -1; | |
2504 | goto end; | |
2505 | } | |
2506 | } | |
2507 | ||
e5add6d0 JG |
2508 | chunk_status = lttng_trace_chunk_set_credentials_current_user(chunk); |
2509 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2510 | reply_code = LTTNG_ERR_UNK; | |
2511 | ret = -1; | |
2512 | goto end; | |
2513 | } | |
2514 | ||
0ccc0411 JG |
2515 | ret = session_init_output_directory_handle( |
2516 | conn->session, &session_output); | |
2517 | if (ret) { | |
2518 | reply_code = LTTNG_ERR_CREATE_DIR_FAIL; | |
2519 | goto end; | |
2520 | } | |
e5add6d0 | 2521 | chunk_status = lttng_trace_chunk_set_as_owner(chunk, &session_output); |
0ccc0411 | 2522 | lttng_directory_handle_fini(&session_output); |
e5add6d0 JG |
2523 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
2524 | reply_code = LTTNG_ERR_UNK; | |
2525 | ret = -1; | |
2526 | goto end; | |
2527 | } | |
2528 | ||
2529 | published_chunk = sessiond_trace_chunk_registry_publish_chunk( | |
2530 | sessiond_trace_chunk_registry, | |
2531 | conn->session->sessiond_uuid, | |
2532 | conn->session->id, | |
2533 | chunk); | |
2534 | if (!published_chunk) { | |
2535 | char uuid_str[UUID_STR_LEN]; | |
2536 | ||
2537 | lttng_uuid_to_str(conn->session->sessiond_uuid, uuid_str); | |
2538 | ERR("Failed to publish chunk: sessiond_uuid = %s, session_id = %" PRIu64 ", chunk_id = %" PRIu64, | |
2539 | uuid_str, | |
2540 | conn->session->id, | |
2541 | msg->chunk_id); | |
2542 | ret = -1; | |
2543 | reply_code = LTTNG_ERR_NOMEM; | |
2544 | goto end; | |
2545 | } | |
2546 | ||
2547 | pthread_mutex_lock(&conn->session->lock); | |
62bad3bf JG |
2548 | if (conn->session->pending_closure_trace_chunk) { |
2549 | /* | |
2550 | * Invalid; this means a second create_trace_chunk command was | |
2551 | * received before a close_trace_chunk. | |
2552 | */ | |
2553 | ERR("Invalid trace chunk close command received; a trace chunk is already waiting for a trace chunk close command"); | |
2554 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
2555 | ret = -1; | |
2556 | goto end_unlock_session; | |
2557 | } | |
2558 | conn->session->pending_closure_trace_chunk = | |
2559 | conn->session->current_trace_chunk; | |
e5add6d0 | 2560 | conn->session->current_trace_chunk = published_chunk; |
e5add6d0 | 2561 | published_chunk = NULL; |
62bad3bf | 2562 | end_unlock_session: |
c35f9726 | 2563 | pthread_mutex_unlock(&conn->session->lock); |
e5add6d0 JG |
2564 | end: |
2565 | reply.ret_code = htobe32((uint32_t) reply_code); | |
2566 | send_ret = conn->sock->ops->sendmsg(conn->sock, | |
2567 | &reply, | |
2568 | sizeof(struct lttcomm_relayd_generic_reply), | |
2569 | 0); | |
2570 | if (send_ret < (ssize_t) sizeof(reply)) { | |
2571 | ERR("Failed to send \"create trace chunk\" command reply (ret = %zd)", | |
2572 | send_ret); | |
2573 | ret = -1; | |
2574 | } | |
2575 | end_no_reply: | |
2576 | lttng_trace_chunk_put(chunk); | |
2577 | lttng_trace_chunk_put(published_chunk); | |
e5add6d0 JG |
2578 | return ret; |
2579 | } | |
2580 | ||
bbc4768c JG |
2581 | /* |
2582 | * relay_close_trace_chunk: close a trace chunk | |
2583 | */ | |
2584 | static int relay_close_trace_chunk(const struct lttcomm_relayd_hdr *recv_hdr, | |
2585 | struct relay_connection *conn, | |
2586 | const struct lttng_buffer_view *payload) | |
2587 | { | |
9898f786 | 2588 | int ret = 0, buf_ret; |
bbc4768c JG |
2589 | ssize_t send_ret; |
2590 | struct relay_session *session = conn->session; | |
2591 | struct lttcomm_relayd_close_trace_chunk *msg; | |
ecd1a12f | 2592 | struct lttcomm_relayd_close_trace_chunk_reply reply = {}; |
bbc4768c JG |
2593 | struct lttng_buffer_view header_view; |
2594 | struct lttng_trace_chunk *chunk = NULL; | |
2595 | enum lttng_error_code reply_code = LTTNG_OK; | |
2596 | enum lttng_trace_chunk_status chunk_status; | |
2597 | uint64_t chunk_id; | |
c35f9726 | 2598 | LTTNG_OPTIONAL(enum lttng_trace_chunk_command_type) close_command = {}; |
bbc4768c | 2599 | time_t close_timestamp; |
ecd1a12f MD |
2600 | char closed_trace_chunk_path[LTTNG_PATH_MAX]; |
2601 | size_t path_length = 0; | |
2602 | const char *chunk_name = NULL; | |
2603 | struct lttng_dynamic_buffer reply_payload; | |
2604 | ||
2605 | lttng_dynamic_buffer_init(&reply_payload); | |
bbc4768c JG |
2606 | |
2607 | if (!session || !conn->version_check_done) { | |
2608 | ERR("Trying to close a trace chunk before version check"); | |
2609 | ret = -1; | |
2610 | goto end_no_reply; | |
2611 | } | |
2612 | ||
2613 | if (session->major == 2 && session->minor < 11) { | |
2614 | ERR("Chunk close command is unsupported before 2.11"); | |
2615 | ret = -1; | |
2616 | goto end_no_reply; | |
2617 | } | |
2618 | ||
2619 | header_view = lttng_buffer_view_from_view(payload, 0, sizeof(*msg)); | |
2620 | if (!header_view.data) { | |
2621 | ERR("Failed to receive payload of chunk close command"); | |
2622 | ret = -1; | |
2623 | goto end_no_reply; | |
2624 | } | |
2625 | ||
2626 | /* Convert to host endianness. */ | |
2627 | msg = (typeof(msg)) header_view.data; | |
2628 | chunk_id = be64toh(msg->chunk_id); | |
2629 | close_timestamp = (time_t) be64toh(msg->close_timestamp); | |
2630 | close_command = (typeof(close_command)){ | |
2631 | .value = be32toh(msg->close_command.value), | |
2632 | .is_set = msg->close_command.is_set, | |
2633 | }; | |
2634 | ||
2635 | chunk = sessiond_trace_chunk_registry_get_chunk( | |
2636 | sessiond_trace_chunk_registry, | |
2637 | conn->session->sessiond_uuid, | |
2638 | conn->session->id, | |
2639 | chunk_id); | |
2640 | if (!chunk) { | |
2641 | char uuid_str[UUID_STR_LEN]; | |
2642 | ||
2643 | lttng_uuid_to_str(conn->session->sessiond_uuid, uuid_str); | |
2644 | ERR("Failed to find chunk to close: sessiond_uuid = %s, session_id = %" PRIu64 ", chunk_id = %" PRIu64, | |
2645 | uuid_str, | |
2646 | conn->session->id, | |
2647 | msg->chunk_id); | |
2648 | ret = -1; | |
2649 | reply_code = LTTNG_ERR_NOMEM; | |
2650 | goto end; | |
2651 | } | |
2652 | ||
62bad3bf JG |
2653 | pthread_mutex_lock(&session->lock); |
2654 | if (session->pending_closure_trace_chunk && | |
2655 | session->pending_closure_trace_chunk != chunk) { | |
2656 | ERR("Trace chunk close command for session \"%s\" does not target the trace chunk pending closure", | |
2657 | session->session_name); | |
2658 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
2659 | ret = -1; | |
2660 | goto end_unlock_session; | |
2661 | } | |
2662 | ||
bbc4768c JG |
2663 | chunk_status = lttng_trace_chunk_set_close_timestamp( |
2664 | chunk, close_timestamp); | |
2665 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2666 | ERR("Failed to set trace chunk close timestamp"); | |
2667 | ret = -1; | |
2668 | reply_code = LTTNG_ERR_UNK; | |
62bad3bf | 2669 | goto end_unlock_session; |
bbc4768c JG |
2670 | } |
2671 | ||
2672 | if (close_command.is_set) { | |
2673 | chunk_status = lttng_trace_chunk_set_close_command( | |
2674 | chunk, close_command.value); | |
2675 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2676 | ret = -1; | |
2677 | reply_code = LTTNG_ERR_INVALID; | |
62bad3bf | 2678 | goto end_unlock_session; |
bbc4768c JG |
2679 | } |
2680 | } | |
ecd1a12f MD |
2681 | chunk_status = lttng_trace_chunk_get_name(chunk, &chunk_name, NULL); |
2682 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2683 | ERR("Failed to get chunk name"); | |
2684 | ret = -1; | |
2685 | reply_code = LTTNG_ERR_UNK; | |
2686 | goto end_unlock_session; | |
2687 | } | |
2688 | if (!session->has_rotated && !session->snapshot) { | |
2689 | ret = lttng_strncpy(closed_trace_chunk_path, | |
2690 | session->output_path, | |
2691 | sizeof(closed_trace_chunk_path)); | |
2692 | if (ret) { | |
2693 | ERR("Failed to send trace chunk path: path length of %zu bytes exceeds the maximal allowed length of %zu bytes", | |
2694 | strlen(session->output_path), | |
2695 | sizeof(closed_trace_chunk_path)); | |
2696 | reply_code = LTTNG_ERR_NOMEM; | |
2697 | ret = -1; | |
2698 | goto end_unlock_session; | |
2699 | } | |
2700 | } else { | |
2701 | if (session->snapshot) { | |
2702 | ret = snprintf(closed_trace_chunk_path, | |
2703 | sizeof(closed_trace_chunk_path), | |
2704 | "%s/%s", session->output_path, | |
2705 | chunk_name); | |
2706 | } else { | |
2707 | ret = snprintf(closed_trace_chunk_path, | |
2708 | sizeof(closed_trace_chunk_path), | |
2709 | "%s/" DEFAULT_ARCHIVED_TRACE_CHUNKS_DIRECTORY | |
2710 | "/%s", | |
2711 | session->output_path, chunk_name); | |
2712 | } | |
2713 | if (ret < 0 || ret == sizeof(closed_trace_chunk_path)) { | |
2714 | ERR("Failed to format closed trace chunk resulting path"); | |
2715 | reply_code = ret < 0 ? LTTNG_ERR_UNK : LTTNG_ERR_NOMEM; | |
2716 | ret = -1; | |
2717 | goto end_unlock_session; | |
2718 | } | |
2719 | } | |
2720 | DBG("Reply chunk path on close: %s", closed_trace_chunk_path); | |
2721 | path_length = strlen(closed_trace_chunk_path) + 1; | |
2722 | if (path_length > UINT32_MAX) { | |
2723 | ERR("Closed trace chunk path exceeds the maximal length allowed by the protocol"); | |
2724 | ret = -1; | |
2725 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
2726 | goto end_unlock_session; | |
2727 | } | |
bbc4768c | 2728 | |
c35f9726 JG |
2729 | if (session->current_trace_chunk == chunk) { |
2730 | /* | |
2731 | * After a trace chunk close command, no new streams | |
2732 | * referencing the chunk may be created. Hence, on the | |
2733 | * event that no new trace chunk have been created for | |
2734 | * the session, the reference to the current trace chunk | |
2735 | * is released in order to allow it to be reclaimed when | |
2736 | * the last stream releases its reference to it. | |
2737 | */ | |
2738 | lttng_trace_chunk_put(session->current_trace_chunk); | |
2739 | session->current_trace_chunk = NULL; | |
2740 | } | |
62bad3bf JG |
2741 | lttng_trace_chunk_put(session->pending_closure_trace_chunk); |
2742 | session->pending_closure_trace_chunk = NULL; | |
2743 | end_unlock_session: | |
c35f9726 JG |
2744 | pthread_mutex_unlock(&session->lock); |
2745 | ||
bbc4768c | 2746 | end: |
ecd1a12f MD |
2747 | reply.generic.ret_code = htobe32((uint32_t) reply_code); |
2748 | reply.path_length = htobe32((uint32_t) path_length); | |
9898f786 | 2749 | buf_ret = lttng_dynamic_buffer_append( |
ecd1a12f | 2750 | &reply_payload, &reply, sizeof(reply)); |
9898f786 | 2751 | if (buf_ret) { |
ecd1a12f MD |
2752 | ERR("Failed to append \"close trace chunk\" command reply header to payload buffer"); |
2753 | goto end_no_reply; | |
2754 | } | |
2755 | ||
2756 | if (reply_code == LTTNG_OK) { | |
9898f786 | 2757 | buf_ret = lttng_dynamic_buffer_append(&reply_payload, |
ecd1a12f | 2758 | closed_trace_chunk_path, path_length); |
9898f786 | 2759 | if (buf_ret) { |
ecd1a12f MD |
2760 | ERR("Failed to append \"close trace chunk\" command reply path to payload buffer"); |
2761 | goto end_no_reply; | |
2762 | } | |
2763 | } | |
2764 | ||
bbc4768c | 2765 | send_ret = conn->sock->ops->sendmsg(conn->sock, |
ecd1a12f MD |
2766 | reply_payload.data, |
2767 | reply_payload.size, | |
bbc4768c | 2768 | 0); |
ecd1a12f MD |
2769 | if (send_ret < reply_payload.size) { |
2770 | ERR("Failed to send \"close trace chunk\" command reply of %zu bytes (ret = %zd)", | |
2771 | reply_payload.size, send_ret); | |
bbc4768c | 2772 | ret = -1; |
ecd1a12f | 2773 | goto end_no_reply; |
bbc4768c JG |
2774 | } |
2775 | end_no_reply: | |
2776 | lttng_trace_chunk_put(chunk); | |
ecd1a12f | 2777 | lttng_dynamic_buffer_reset(&reply_payload); |
bbc4768c JG |
2778 | return ret; |
2779 | } | |
2780 | ||
c35f9726 JG |
2781 | /* |
2782 | * relay_trace_chunk_exists: check if a trace chunk exists | |
2783 | */ | |
2784 | static int relay_trace_chunk_exists(const struct lttcomm_relayd_hdr *recv_hdr, | |
2785 | struct relay_connection *conn, | |
2786 | const struct lttng_buffer_view *payload) | |
2787 | { | |
2788 | int ret = 0; | |
2789 | ssize_t send_ret; | |
2790 | struct relay_session *session = conn->session; | |
2791 | struct lttcomm_relayd_trace_chunk_exists *msg; | |
2792 | struct lttcomm_relayd_trace_chunk_exists_reply reply = {}; | |
2793 | struct lttng_buffer_view header_view; | |
c35f9726 | 2794 | uint64_t chunk_id; |
6b584c2e | 2795 | bool chunk_exists; |
c35f9726 JG |
2796 | |
2797 | if (!session || !conn->version_check_done) { | |
2798 | ERR("Trying to close a trace chunk before version check"); | |
2799 | ret = -1; | |
2800 | goto end_no_reply; | |
2801 | } | |
2802 | ||
2803 | if (session->major == 2 && session->minor < 11) { | |
2804 | ERR("Chunk close command is unsupported before 2.11"); | |
2805 | ret = -1; | |
2806 | goto end_no_reply; | |
2807 | } | |
2808 | ||
2809 | header_view = lttng_buffer_view_from_view(payload, 0, sizeof(*msg)); | |
2810 | if (!header_view.data) { | |
2811 | ERR("Failed to receive payload of chunk close command"); | |
2812 | ret = -1; | |
2813 | goto end_no_reply; | |
2814 | } | |
2815 | ||
2816 | /* Convert to host endianness. */ | |
2817 | msg = (typeof(msg)) header_view.data; | |
2818 | chunk_id = be64toh(msg->chunk_id); | |
2819 | ||
6b584c2e | 2820 | ret = sessiond_trace_chunk_registry_chunk_exists( |
c35f9726 JG |
2821 | sessiond_trace_chunk_registry, |
2822 | conn->session->sessiond_uuid, | |
2823 | conn->session->id, | |
6b584c2e JG |
2824 | chunk_id, &chunk_exists); |
2825 | /* | |
2826 | * If ret is not 0, send the reply and report the error to the caller. | |
2827 | * It is a protocol (or internal) error and the session/connection | |
2828 | * should be torn down. | |
2829 | */ | |
2830 | reply = (typeof(reply)){ | |
2831 | .generic.ret_code = htobe32((uint32_t) | |
2832 | (ret == 0 ? LTTNG_OK : LTTNG_ERR_INVALID_PROTOCOL)), | |
2833 | .trace_chunk_exists = ret == 0 ? chunk_exists : 0, | |
c35f9726 | 2834 | }; |
6b584c2e JG |
2835 | send_ret = conn->sock->ops->sendmsg( |
2836 | conn->sock, &reply, sizeof(reply), 0); | |
c35f9726 JG |
2837 | if (send_ret < (ssize_t) sizeof(reply)) { |
2838 | ERR("Failed to send \"create trace chunk\" command reply (ret = %zd)", | |
2839 | send_ret); | |
2840 | ret = -1; | |
2841 | } | |
2842 | end_no_reply: | |
c35f9726 JG |
2843 | return ret; |
2844 | } | |
2845 | ||
5312a3ed JG |
2846 | #define DBG_CMD(cmd_name, conn) \ |
2847 | DBG3("Processing \"%s\" command for socket %i", cmd_name, conn->sock->fd); | |
2848 | ||
2849 | static int relay_process_control_command(struct relay_connection *conn, | |
2850 | const struct lttcomm_relayd_hdr *header, | |
2851 | const struct lttng_buffer_view *payload) | |
b8aa1682 JD |
2852 | { |
2853 | int ret = 0; | |
2854 | ||
5312a3ed | 2855 | switch (header->cmd) { |
b8aa1682 | 2856 | case RELAYD_CREATE_SESSION: |
5312a3ed JG |
2857 | DBG_CMD("RELAYD_CREATE_SESSION", conn); |
2858 | ret = relay_create_session(header, conn, payload); | |
b8aa1682 | 2859 | break; |
b8aa1682 | 2860 | case RELAYD_ADD_STREAM: |
5312a3ed JG |
2861 | DBG_CMD("RELAYD_ADD_STREAM", conn); |
2862 | ret = relay_add_stream(header, conn, payload); | |
b8aa1682 JD |
2863 | break; |
2864 | case RELAYD_START_DATA: | |
5312a3ed JG |
2865 | DBG_CMD("RELAYD_START_DATA", conn); |
2866 | ret = relay_start(header, conn, payload); | |
b8aa1682 JD |
2867 | break; |
2868 | case RELAYD_SEND_METADATA: | |
5312a3ed JG |
2869 | DBG_CMD("RELAYD_SEND_METADATA", conn); |
2870 | ret = relay_recv_metadata(header, conn, payload); | |
b8aa1682 JD |
2871 | break; |
2872 | case RELAYD_VERSION: | |
5312a3ed JG |
2873 | DBG_CMD("RELAYD_VERSION", conn); |
2874 | ret = relay_send_version(header, conn, payload); | |
b8aa1682 | 2875 | break; |
173af62f | 2876 | case RELAYD_CLOSE_STREAM: |
5312a3ed JG |
2877 | DBG_CMD("RELAYD_CLOSE_STREAM", conn); |
2878 | ret = relay_close_stream(header, conn, payload); | |
173af62f | 2879 | break; |
6d805429 | 2880 | case RELAYD_DATA_PENDING: |
5312a3ed JG |
2881 | DBG_CMD("RELAYD_DATA_PENDING", conn); |
2882 | ret = relay_data_pending(header, conn, payload); | |
c8f59ee5 DG |
2883 | break; |
2884 | case RELAYD_QUIESCENT_CONTROL: | |
5312a3ed JG |
2885 | DBG_CMD("RELAYD_QUIESCENT_CONTROL", conn); |
2886 | ret = relay_quiescent_control(header, conn, payload); | |
c8f59ee5 | 2887 | break; |
f7079f67 | 2888 | case RELAYD_BEGIN_DATA_PENDING: |
5312a3ed JG |
2889 | DBG_CMD("RELAYD_BEGIN_DATA_PENDING", conn); |
2890 | ret = relay_begin_data_pending(header, conn, payload); | |
f7079f67 DG |
2891 | break; |
2892 | case RELAYD_END_DATA_PENDING: | |
5312a3ed JG |
2893 | DBG_CMD("RELAYD_END_DATA_PENDING", conn); |
2894 | ret = relay_end_data_pending(header, conn, payload); | |
f7079f67 | 2895 | break; |
1c20f0e2 | 2896 | case RELAYD_SEND_INDEX: |
5312a3ed JG |
2897 | DBG_CMD("RELAYD_SEND_INDEX", conn); |
2898 | ret = relay_recv_index(header, conn, payload); | |
1c20f0e2 | 2899 | break; |
a4baae1b | 2900 | case RELAYD_STREAMS_SENT: |
5312a3ed JG |
2901 | DBG_CMD("RELAYD_STREAMS_SENT", conn); |
2902 | ret = relay_streams_sent(header, conn, payload); | |
a4baae1b | 2903 | break; |
93ec662e | 2904 | case RELAYD_RESET_METADATA: |
5312a3ed JG |
2905 | DBG_CMD("RELAYD_RESET_METADATA", conn); |
2906 | ret = relay_reset_metadata(header, conn, payload); | |
93ec662e | 2907 | break; |
c35f9726 JG |
2908 | case RELAYD_ROTATE_STREAMS: |
2909 | DBG_CMD("RELAYD_ROTATE_STREAMS", conn); | |
2910 | ret = relay_rotate_session_streams(header, conn, payload); | |
d3ecc550 | 2911 | break; |
e5add6d0 JG |
2912 | case RELAYD_CREATE_TRACE_CHUNK: |
2913 | DBG_CMD("RELAYD_CREATE_TRACE_CHUNK", conn); | |
2914 | ret = relay_create_trace_chunk(header, conn, payload); | |
2915 | break; | |
bbc4768c JG |
2916 | case RELAYD_CLOSE_TRACE_CHUNK: |
2917 | DBG_CMD("RELAYD_CLOSE_TRACE_CHUNK", conn); | |
2918 | ret = relay_close_trace_chunk(header, conn, payload); | |
2919 | break; | |
c35f9726 JG |
2920 | case RELAYD_TRACE_CHUNK_EXISTS: |
2921 | DBG_CMD("RELAYD_TRACE_CHUNK_EXISTS", conn); | |
2922 | ret = relay_trace_chunk_exists(header, conn, payload); | |
2923 | break; | |
b8aa1682 JD |
2924 | case RELAYD_UPDATE_SYNC_INFO: |
2925 | default: | |
5312a3ed | 2926 | ERR("Received unknown command (%u)", header->cmd); |
58eb9381 | 2927 | relay_unknown_command(conn); |
b8aa1682 JD |
2928 | ret = -1; |
2929 | goto end; | |
2930 | } | |
2931 | ||
2932 | end: | |
2933 | return ret; | |
2934 | } | |
2935 | ||
5569b118 JG |
2936 | static enum relay_connection_status relay_process_control_receive_payload( |
2937 | struct relay_connection *conn) | |
5312a3ed JG |
2938 | { |
2939 | int ret = 0; | |
5569b118 | 2940 | enum relay_connection_status status = RELAY_CONNECTION_STATUS_OK; |
5312a3ed JG |
2941 | struct lttng_dynamic_buffer *reception_buffer = |
2942 | &conn->protocol.ctrl.reception_buffer; | |
2943 | struct ctrl_connection_state_receive_payload *state = | |
2944 | &conn->protocol.ctrl.state.receive_payload; | |
2945 | struct lttng_buffer_view payload_view; | |
2946 | ||
2947 | if (state->left_to_receive == 0) { | |
2948 | /* Short-circuit for payload-less commands. */ | |
2949 | goto reception_complete; | |
2950 | } | |
2951 | ||
2952 | ret = conn->sock->ops->recvmsg(conn->sock, | |
2953 | reception_buffer->data + state->received, | |
2954 | state->left_to_receive, MSG_DONTWAIT); | |
2955 | if (ret < 0) { | |
5569b118 JG |
2956 | if (errno != EAGAIN && errno != EWOULDBLOCK) { |
2957 | PERROR("Unable to receive command payload on sock %d", | |
2958 | conn->sock->fd); | |
2959 | status = RELAY_CONNECTION_STATUS_ERROR; | |
2960 | } | |
5312a3ed JG |
2961 | goto end; |
2962 | } else if (ret == 0) { | |
2963 | DBG("Socket %d performed an orderly shutdown (received EOF)", conn->sock->fd); | |
5569b118 | 2964 | status = RELAY_CONNECTION_STATUS_CLOSED; |
5312a3ed JG |
2965 | goto end; |
2966 | } | |
2967 | ||
2968 | assert(ret > 0); | |
2969 | assert(ret <= state->left_to_receive); | |
2970 | ||
2971 | state->left_to_receive -= ret; | |
2972 | state->received += ret; | |
2973 | ||
2974 | if (state->left_to_receive > 0) { | |
2975 | /* | |
2976 | * Can't transition to the protocol's next state, wait to | |
2977 | * receive the rest of the header. | |
2978 | */ | |
2979 | DBG3("Partial reception of control connection protocol payload (received %" PRIu64 " bytes, %" PRIu64 " bytes left to receive, fd = %i)", | |
2980 | state->received, state->left_to_receive, | |
2981 | conn->sock->fd); | |
5312a3ed JG |
2982 | goto end; |
2983 | } | |
2984 | ||
2985 | reception_complete: | |
2986 | DBG("Done receiving control command payload: fd = %i, payload size = %" PRIu64 " bytes", | |
2987 | conn->sock->fd, state->received); | |
2988 | /* | |
2989 | * The payload required to process the command has been received. | |
2990 | * A view to the reception buffer is forwarded to the various | |
2991 | * commands and the state of the control is reset on success. | |
2992 | * | |
2993 | * Commands are responsible for sending their reply to the peer. | |
2994 | */ | |
2995 | payload_view = lttng_buffer_view_from_dynamic_buffer(reception_buffer, | |
2996 | 0, -1); | |
2997 | ret = relay_process_control_command(conn, | |
2998 | &state->header, &payload_view); | |
2999 | if (ret < 0) { | |
5569b118 | 3000 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed JG |
3001 | goto end; |
3002 | } | |
3003 | ||
3004 | ret = connection_reset_protocol_state(conn); | |
5569b118 JG |
3005 | if (ret) { |
3006 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3007 | } | |
5312a3ed | 3008 | end: |
5569b118 | 3009 | return status; |
5312a3ed JG |
3010 | } |
3011 | ||
5569b118 JG |
3012 | static enum relay_connection_status relay_process_control_receive_header( |
3013 | struct relay_connection *conn) | |
5312a3ed JG |
3014 | { |
3015 | int ret = 0; | |
5569b118 | 3016 | enum relay_connection_status status = RELAY_CONNECTION_STATUS_OK; |
5312a3ed JG |
3017 | struct lttcomm_relayd_hdr header; |
3018 | struct lttng_dynamic_buffer *reception_buffer = | |
3019 | &conn->protocol.ctrl.reception_buffer; | |
3020 | struct ctrl_connection_state_receive_header *state = | |
3021 | &conn->protocol.ctrl.state.receive_header; | |
3022 | ||
3023 | assert(state->left_to_receive != 0); | |
3024 | ||
3025 | ret = conn->sock->ops->recvmsg(conn->sock, | |
3026 | reception_buffer->data + state->received, | |
3027 | state->left_to_receive, MSG_DONTWAIT); | |
3028 | if (ret < 0) { | |
5569b118 JG |
3029 | if (errno != EAGAIN && errno != EWOULDBLOCK) { |
3030 | PERROR("Unable to receive control command header on sock %d", | |
3031 | conn->sock->fd); | |
3032 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3033 | } | |
5312a3ed JG |
3034 | goto end; |
3035 | } else if (ret == 0) { | |
3036 | DBG("Socket %d performed an orderly shutdown (received EOF)", conn->sock->fd); | |
5569b118 | 3037 | status = RELAY_CONNECTION_STATUS_CLOSED; |
5312a3ed JG |
3038 | goto end; |
3039 | } | |
3040 | ||
3041 | assert(ret > 0); | |
3042 | assert(ret <= state->left_to_receive); | |
3043 | ||
3044 | state->left_to_receive -= ret; | |
3045 | state->received += ret; | |
3046 | ||
3047 | if (state->left_to_receive > 0) { | |
3048 | /* | |
3049 | * Can't transition to the protocol's next state, wait to | |
3050 | * receive the rest of the header. | |
3051 | */ | |
3052 | DBG3("Partial reception of control connection protocol header (received %" PRIu64 " bytes, %" PRIu64 " bytes left to receive, fd = %i)", | |
3053 | state->received, state->left_to_receive, | |
3054 | conn->sock->fd); | |
5312a3ed JG |
3055 | goto end; |
3056 | } | |
3057 | ||
3058 | /* Transition to next state: receiving the command's payload. */ | |
3059 | conn->protocol.ctrl.state_id = | |
3060 | CTRL_CONNECTION_STATE_RECEIVE_PAYLOAD; | |
3061 | memcpy(&header, reception_buffer->data, sizeof(header)); | |
3062 | header.circuit_id = be64toh(header.circuit_id); | |
3063 | header.data_size = be64toh(header.data_size); | |
3064 | header.cmd = be32toh(header.cmd); | |
3065 | header.cmd_version = be32toh(header.cmd_version); | |
3066 | memcpy(&conn->protocol.ctrl.state.receive_payload.header, | |
3067 | &header, sizeof(header)); | |
3068 | ||
3069 | DBG("Done receiving control command header: fd = %i, cmd = %" PRIu32 ", cmd_version = %" PRIu32 ", payload size = %" PRIu64 " bytes", | |
3070 | conn->sock->fd, header.cmd, header.cmd_version, | |
3071 | header.data_size); | |
3072 | ||
715e6fb1 | 3073 | if (header.data_size > DEFAULT_NETWORK_RELAYD_CTRL_MAX_PAYLOAD_SIZE) { |
5312a3ed JG |
3074 | ERR("Command header indicates a payload (%" PRIu64 " bytes) that exceeds the maximal payload size allowed on a control connection.", |
3075 | header.data_size); | |
5569b118 | 3076 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed JG |
3077 | goto end; |
3078 | } | |
3079 | ||
3080 | conn->protocol.ctrl.state.receive_payload.left_to_receive = | |
3081 | header.data_size; | |
3082 | conn->protocol.ctrl.state.receive_payload.received = 0; | |
3083 | ret = lttng_dynamic_buffer_set_size(reception_buffer, | |
3084 | header.data_size); | |
3085 | if (ret) { | |
5569b118 | 3086 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed JG |
3087 | goto end; |
3088 | } | |
3089 | ||
3090 | if (header.data_size == 0) { | |
3091 | /* | |
3092 | * Manually invoke the next state as the poll loop | |
3093 | * will not wake-up to allow us to proceed further. | |
3094 | */ | |
5569b118 | 3095 | status = relay_process_control_receive_payload(conn); |
5312a3ed JG |
3096 | } |
3097 | end: | |
5569b118 | 3098 | return status; |
5312a3ed JG |
3099 | } |
3100 | ||
3101 | /* | |
3102 | * Process the commands received on the control socket | |
3103 | */ | |
5569b118 JG |
3104 | static enum relay_connection_status relay_process_control( |
3105 | struct relay_connection *conn) | |
5312a3ed | 3106 | { |
5569b118 | 3107 | enum relay_connection_status status; |
5312a3ed JG |
3108 | |
3109 | switch (conn->protocol.ctrl.state_id) { | |
3110 | case CTRL_CONNECTION_STATE_RECEIVE_HEADER: | |
5569b118 | 3111 | status = relay_process_control_receive_header(conn); |
5312a3ed JG |
3112 | break; |
3113 | case CTRL_CONNECTION_STATE_RECEIVE_PAYLOAD: | |
5569b118 | 3114 | status = relay_process_control_receive_payload(conn); |
5312a3ed JG |
3115 | break; |
3116 | default: | |
3117 | ERR("Unknown control connection protocol state encountered."); | |
3118 | abort(); | |
3119 | } | |
3120 | ||
5569b118 | 3121 | return status; |
5312a3ed JG |
3122 | } |
3123 | ||
5569b118 JG |
3124 | static enum relay_connection_status relay_process_data_receive_header( |
3125 | struct relay_connection *conn) | |
b8aa1682 | 3126 | { |
5312a3ed | 3127 | int ret; |
5569b118 | 3128 | enum relay_connection_status status = RELAY_CONNECTION_STATUS_OK; |
5312a3ed JG |
3129 | struct data_connection_state_receive_header *state = |
3130 | &conn->protocol.data.state.receive_header; | |
3131 | struct lttcomm_relayd_data_hdr header; | |
b8aa1682 | 3132 | struct relay_stream *stream; |
5312a3ed JG |
3133 | |
3134 | assert(state->left_to_receive != 0); | |
3135 | ||
3136 | ret = conn->sock->ops->recvmsg(conn->sock, | |
3137 | state->header_reception_buffer + state->received, | |
3138 | state->left_to_receive, MSG_DONTWAIT); | |
3139 | if (ret < 0) { | |
5569b118 JG |
3140 | if (errno != EAGAIN && errno != EWOULDBLOCK) { |
3141 | PERROR("Unable to receive data header on sock %d", conn->sock->fd); | |
3142 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3143 | } | |
5312a3ed JG |
3144 | goto end; |
3145 | } else if (ret == 0) { | |
3146 | /* Orderly shutdown. Not necessary to print an error. */ | |
3147 | DBG("Socket %d performed an orderly shutdown (received EOF)", conn->sock->fd); | |
5569b118 | 3148 | status = RELAY_CONNECTION_STATUS_CLOSED; |
b8aa1682 JD |
3149 | goto end; |
3150 | } | |
3151 | ||
5312a3ed JG |
3152 | assert(ret > 0); |
3153 | assert(ret <= state->left_to_receive); | |
3154 | ||
3155 | state->left_to_receive -= ret; | |
3156 | state->received += ret; | |
3157 | ||
3158 | if (state->left_to_receive > 0) { | |
3159 | /* | |
3160 | * Can't transition to the protocol's next state, wait to | |
3161 | * receive the rest of the header. | |
3162 | */ | |
3163 | DBG3("Partial reception of data connection header (received %" PRIu64 " bytes, %" PRIu64 " bytes left to receive, fd = %i)", | |
3164 | state->received, state->left_to_receive, | |
3165 | conn->sock->fd); | |
7591bab1 | 3166 | goto end; |
b8aa1682 | 3167 | } |
b8aa1682 | 3168 | |
5312a3ed JG |
3169 | /* Transition to next state: receiving the payload. */ |
3170 | conn->protocol.data.state_id = DATA_CONNECTION_STATE_RECEIVE_PAYLOAD; | |
173af62f | 3171 | |
5312a3ed JG |
3172 | memcpy(&header, state->header_reception_buffer, sizeof(header)); |
3173 | header.circuit_id = be64toh(header.circuit_id); | |
3174 | header.stream_id = be64toh(header.stream_id); | |
3175 | header.data_size = be32toh(header.data_size); | |
3176 | header.net_seq_num = be64toh(header.net_seq_num); | |
3177 | header.padding_size = be32toh(header.padding_size); | |
3178 | memcpy(&conn->protocol.data.state.receive_payload.header, &header, sizeof(header)); | |
3179 | ||
3180 | conn->protocol.data.state.receive_payload.left_to_receive = | |
3181 | header.data_size; | |
3182 | conn->protocol.data.state.receive_payload.received = 0; | |
3183 | conn->protocol.data.state.receive_payload.rotate_index = false; | |
3184 | ||
3185 | DBG("Received data connection header on fd %i: circuit_id = %" PRIu64 ", stream_id = %" PRIu64 ", data_size = %" PRIu32 ", net_seq_num = %" PRIu64 ", padding_size = %" PRIu32, | |
3186 | conn->sock->fd, header.circuit_id, | |
3187 | header.stream_id, header.data_size, | |
3188 | header.net_seq_num, header.padding_size); | |
3189 | ||
3190 | stream = stream_get_by_id(header.stream_id); | |
3191 | if (!stream) { | |
3192 | DBG("relay_process_data_receive_payload: Cannot find stream %" PRIu64, | |
3193 | header.stream_id); | |
5569b118 JG |
3194 | /* Protocol error. */ |
3195 | status = RELAY_CONNECTION_STATUS_ERROR; | |
5312a3ed JG |
3196 | goto end; |
3197 | } | |
b8aa1682 | 3198 | |
7591bab1 | 3199 | pthread_mutex_lock(&stream->lock); |
c35f9726 JG |
3200 | /* Prepare stream for the reception of a new packet. */ |
3201 | ret = stream_init_packet(stream, header.data_size, | |
3202 | &conn->protocol.data.state.receive_payload.rotate_index); | |
3203 | pthread_mutex_unlock(&stream->lock); | |
3204 | if (ret) { | |
3205 | ERR("Failed to rotate stream output file"); | |
3206 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3207 | goto end_stream_unlock; | |
1c20f0e2 JD |
3208 | } |
3209 | ||
5312a3ed | 3210 | end_stream_unlock: |
5312a3ed JG |
3211 | stream_put(stream); |
3212 | end: | |
5569b118 | 3213 | return status; |
5312a3ed JG |
3214 | } |
3215 | ||
5569b118 JG |
3216 | static enum relay_connection_status relay_process_data_receive_payload( |
3217 | struct relay_connection *conn) | |
5312a3ed JG |
3218 | { |
3219 | int ret; | |
5569b118 | 3220 | enum relay_connection_status status = RELAY_CONNECTION_STATUS_OK; |
5312a3ed JG |
3221 | struct relay_stream *stream; |
3222 | struct data_connection_state_receive_payload *state = | |
3223 | &conn->protocol.data.state.receive_payload; | |
3224 | const size_t chunk_size = RECV_DATA_BUFFER_SIZE; | |
3225 | char data_buffer[chunk_size]; | |
3226 | bool partial_recv = false; | |
3227 | bool new_stream = false, close_requested = false, index_flushed = false; | |
3228 | uint64_t left_to_receive = state->left_to_receive; | |
3229 | struct relay_session *session; | |
3230 | ||
fd0f1e3e JR |
3231 | DBG3("Receiving data for stream id %" PRIu64 " seqnum %" PRIu64 ", %" PRIu64" bytes received, %" PRIu64 " bytes left to receive", |
3232 | state->header.stream_id, state->header.net_seq_num, | |
3233 | state->received, left_to_receive); | |
3234 | ||
5312a3ed JG |
3235 | stream = stream_get_by_id(state->header.stream_id); |
3236 | if (!stream) { | |
5569b118 | 3237 | /* Protocol error. */ |
fd0f1e3e | 3238 | ERR("relay_process_data_receive_payload: cannot find stream %" PRIu64, |
5312a3ed | 3239 | state->header.stream_id); |
5569b118 | 3240 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed | 3241 | goto end; |
1c20f0e2 JD |
3242 | } |
3243 | ||
5312a3ed JG |
3244 | pthread_mutex_lock(&stream->lock); |
3245 | session = stream->trace->session; | |
fd0f1e3e JR |
3246 | if (!conn->session) { |
3247 | ret = connection_set_session(conn, session); | |
3248 | if (ret) { | |
3249 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3250 | goto end_stream_unlock; | |
3251 | } | |
3252 | } | |
5312a3ed JG |
3253 | |
3254 | /* | |
3255 | * The size of the "chunk" received on any iteration is bounded by: | |
3256 | * - the data left to receive, | |
3257 | * - the data immediately available on the socket, | |
3258 | * - the on-stack data buffer | |
3259 | */ | |
3260 | while (left_to_receive > 0 && !partial_recv) { | |
5312a3ed | 3261 | size_t recv_size = min(left_to_receive, chunk_size); |
c35f9726 | 3262 | struct lttng_buffer_view packet_chunk; |
5312a3ed JG |
3263 | |
3264 | ret = conn->sock->ops->recvmsg(conn->sock, data_buffer, | |
3265 | recv_size, MSG_DONTWAIT); | |
3266 | if (ret < 0) { | |
5569b118 JG |
3267 | if (errno != EAGAIN && errno != EWOULDBLOCK) { |
3268 | PERROR("Socket %d error", conn->sock->fd); | |
3269 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3270 | } | |
0848dba7 | 3271 | goto end_stream_unlock; |
5312a3ed JG |
3272 | } else if (ret == 0) { |
3273 | /* No more data ready to be consumed on socket. */ | |
3274 | DBG3("No more data ready for consumption on data socket of stream id %" PRIu64, | |
3275 | state->header.stream_id); | |
5569b118 | 3276 | status = RELAY_CONNECTION_STATUS_CLOSED; |
5312a3ed JG |
3277 | break; |
3278 | } else if (ret < (int) recv_size) { | |
3279 | /* | |
3280 | * All the data available on the socket has been | |
3281 | * consumed. | |
3282 | */ | |
3283 | partial_recv = true; | |
c35f9726 | 3284 | recv_size = ret; |
0848dba7 MD |
3285 | } |
3286 | ||
c35f9726 JG |
3287 | packet_chunk = lttng_buffer_view_init(data_buffer, |
3288 | 0, recv_size); | |
3289 | assert(packet_chunk.data); | |
5312a3ed | 3290 | |
c35f9726 JG |
3291 | ret = stream_write(stream, &packet_chunk, 0); |
3292 | if (ret) { | |
0848dba7 | 3293 | ERR("Relay error writing data to file"); |
5569b118 | 3294 | status = RELAY_CONNECTION_STATUS_ERROR; |
0848dba7 MD |
3295 | goto end_stream_unlock; |
3296 | } | |
3297 | ||
5312a3ed JG |
3298 | left_to_receive -= recv_size; |
3299 | state->received += recv_size; | |
3300 | state->left_to_receive = left_to_receive; | |
5312a3ed JG |
3301 | } |
3302 | ||
3303 | if (state->left_to_receive > 0) { | |
3304 | /* | |
3305 | * Did not receive all the data expected, wait for more data to | |
3306 | * become available on the socket. | |
3307 | */ | |
3308 | DBG3("Partial receive on data connection of stream id %" PRIu64 ", %" PRIu64 " bytes received, %" PRIu64 " bytes left to receive", | |
3309 | state->header.stream_id, state->received, | |
3310 | state->left_to_receive); | |
5312a3ed | 3311 | goto end_stream_unlock; |
0848dba7 | 3312 | } |
5ab7344e | 3313 | |
c35f9726 JG |
3314 | ret = stream_write(stream, NULL, state->header.padding_size); |
3315 | if (ret) { | |
5569b118 | 3316 | status = RELAY_CONNECTION_STATUS_ERROR; |
7591bab1 | 3317 | goto end_stream_unlock; |
1d4dfdef | 3318 | } |
5312a3ed | 3319 | |
298a25ca | 3320 | if (session_streams_have_index(session)) { |
c35f9726 JG |
3321 | ret = stream_update_index(stream, state->header.net_seq_num, |
3322 | state->rotate_index, &index_flushed, | |
3323 | state->header.data_size + state->header.padding_size); | |
5312a3ed | 3324 | if (ret < 0) { |
c35f9726 | 3325 | ERR("Failed to update index: stream %" PRIu64 " net_seq_num %" PRIu64 " ret %d", |
5312a3ed JG |
3326 | stream->stream_handle, |
3327 | state->header.net_seq_num, ret); | |
5569b118 | 3328 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed JG |
3329 | goto end_stream_unlock; |
3330 | } | |
3331 | } | |
3332 | ||
a8f9f353 | 3333 | if (stream->prev_data_seq == -1ULL) { |
c0bae11d MD |
3334 | new_stream = true; |
3335 | } | |
3336 | ||
c35f9726 JG |
3337 | ret = stream_complete_packet(stream, state->header.data_size + |
3338 | state->header.padding_size, state->header.net_seq_num, | |
3339 | index_flushed); | |
3340 | if (ret) { | |
3341 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3342 | goto end_stream_unlock; | |
3343 | } | |
5312a3ed JG |
3344 | |
3345 | /* | |
3346 | * Resetting the protocol state (to RECEIVE_HEADER) will trash the | |
3347 | * contents of *state which are aliased (union) to the same location as | |
3348 | * the new state. Don't use it beyond this point. | |
3349 | */ | |
3350 | connection_reset_protocol_state(conn); | |
3351 | state = NULL; | |
173af62f | 3352 | |
7591bab1 | 3353 | end_stream_unlock: |
bda7c7b9 | 3354 | close_requested = stream->close_requested; |
7591bab1 | 3355 | pthread_mutex_unlock(&stream->lock); |
5312a3ed | 3356 | if (close_requested && left_to_receive == 0) { |
bda7c7b9 JG |
3357 | try_stream_close(stream); |
3358 | } | |
3359 | ||
c0bae11d MD |
3360 | if (new_stream) { |
3361 | pthread_mutex_lock(&session->lock); | |
3362 | uatomic_set(&session->new_streams, 1); | |
3363 | pthread_mutex_unlock(&session->lock); | |
3364 | } | |
5312a3ed | 3365 | |
7591bab1 | 3366 | stream_put(stream); |
b8aa1682 | 3367 | end: |
5569b118 | 3368 | return status; |
b8aa1682 JD |
3369 | } |
3370 | ||
5312a3ed JG |
3371 | /* |
3372 | * relay_process_data: Process the data received on the data socket | |
3373 | */ | |
5569b118 JG |
3374 | static enum relay_connection_status relay_process_data( |
3375 | struct relay_connection *conn) | |
5312a3ed | 3376 | { |
5569b118 | 3377 | enum relay_connection_status status; |
5312a3ed JG |
3378 | |
3379 | switch (conn->protocol.data.state_id) { | |
3380 | case DATA_CONNECTION_STATE_RECEIVE_HEADER: | |
5569b118 | 3381 | status = relay_process_data_receive_header(conn); |
5312a3ed JG |
3382 | break; |
3383 | case DATA_CONNECTION_STATE_RECEIVE_PAYLOAD: | |
5569b118 | 3384 | status = relay_process_data_receive_payload(conn); |
5312a3ed JG |
3385 | break; |
3386 | default: | |
3387 | ERR("Unexpected data connection communication state."); | |
3388 | abort(); | |
3389 | } | |
3390 | ||
5569b118 | 3391 | return status; |
5312a3ed JG |
3392 | } |
3393 | ||
7591bab1 | 3394 | static void cleanup_connection_pollfd(struct lttng_poll_event *events, int pollfd) |
b8aa1682 JD |
3395 | { |
3396 | int ret; | |
3397 | ||
58eb9381 | 3398 | (void) lttng_poll_del(events, pollfd); |
b8aa1682 JD |
3399 | |
3400 | ret = close(pollfd); | |
3401 | if (ret < 0) { | |
3402 | ERR("Closing pollfd %d", pollfd); | |
3403 | } | |
3404 | } | |
3405 | ||
7591bab1 MD |
3406 | static void relay_thread_close_connection(struct lttng_poll_event *events, |
3407 | int pollfd, struct relay_connection *conn) | |
9d1bbf21 | 3408 | { |
7591bab1 | 3409 | const char *type_str; |
2a174661 | 3410 | |
7591bab1 MD |
3411 | switch (conn->type) { |
3412 | case RELAY_DATA: | |
3413 | type_str = "Data"; | |
3414 | break; | |
3415 | case RELAY_CONTROL: | |
3416 | type_str = "Control"; | |
3417 | break; | |
3418 | case RELAY_VIEWER_COMMAND: | |
3419 | type_str = "Viewer Command"; | |
3420 | break; | |
3421 | case RELAY_VIEWER_NOTIFICATION: | |
3422 | type_str = "Viewer Notification"; | |
3423 | break; | |
3424 | default: | |
3425 | type_str = "Unknown"; | |
9d1bbf21 | 3426 | } |
7591bab1 MD |
3427 | cleanup_connection_pollfd(events, pollfd); |
3428 | connection_put(conn); | |
3429 | DBG("%s connection closed with %d", type_str, pollfd); | |
b8aa1682 JD |
3430 | } |
3431 | ||
3432 | /* | |
3433 | * This thread does the actual work | |
3434 | */ | |
7591bab1 | 3435 | static void *relay_thread_worker(void *data) |
b8aa1682 | 3436 | { |
beaad64c DG |
3437 | int ret, err = -1, last_seen_data_fd = -1; |
3438 | uint32_t nb_fd; | |
b8aa1682 JD |
3439 | struct lttng_poll_event events; |
3440 | struct lttng_ht *relay_connections_ht; | |
b8aa1682 | 3441 | struct lttng_ht_iter iter; |
90e7d72f | 3442 | struct relay_connection *destroy_conn = NULL; |
b8aa1682 JD |
3443 | |
3444 | DBG("[thread] Relay worker started"); | |
3445 | ||
9d1bbf21 MD |
3446 | rcu_register_thread(); |
3447 | ||
55706a7d MD |
3448 | health_register(health_relayd, HEALTH_RELAYD_TYPE_WORKER); |
3449 | ||
9b5e0863 MD |
3450 | if (testpoint(relayd_thread_worker)) { |
3451 | goto error_testpoint; | |
3452 | } | |
3453 | ||
f385ae0a MD |
3454 | health_code_update(); |
3455 | ||
b8aa1682 JD |
3456 | /* table of connections indexed on socket */ |
3457 | relay_connections_ht = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
095a4ae5 MD |
3458 | if (!relay_connections_ht) { |
3459 | goto relay_connections_ht_error; | |
3460 | } | |
b8aa1682 | 3461 | |
b8aa1682 JD |
3462 | ret = create_thread_poll_set(&events, 2); |
3463 | if (ret < 0) { | |
3464 | goto error_poll_create; | |
3465 | } | |
3466 | ||
58eb9381 | 3467 | ret = lttng_poll_add(&events, relay_conn_pipe[0], LPOLLIN | LPOLLRDHUP); |
b8aa1682 JD |
3468 | if (ret < 0) { |
3469 | goto error; | |
3470 | } | |
3471 | ||
beaad64c | 3472 | restart: |
b8aa1682 | 3473 | while (1) { |
beaad64c DG |
3474 | int idx = -1, i, seen_control = 0, last_notdel_data_fd = -1; |
3475 | ||
f385ae0a MD |
3476 | health_code_update(); |
3477 | ||
b8aa1682 | 3478 | /* Infinite blocking call, waiting for transmission */ |
87c1611d | 3479 | DBG3("Relayd worker thread polling..."); |
f385ae0a | 3480 | health_poll_entry(); |
b8aa1682 | 3481 | ret = lttng_poll_wait(&events, -1); |
f385ae0a | 3482 | health_poll_exit(); |
b8aa1682 JD |
3483 | if (ret < 0) { |
3484 | /* | |
3485 | * Restart interrupted system call. | |
3486 | */ | |
3487 | if (errno == EINTR) { | |
3488 | goto restart; | |
3489 | } | |
3490 | goto error; | |
3491 | } | |
3492 | ||
0d9c5d77 DG |
3493 | nb_fd = ret; |
3494 | ||
beaad64c | 3495 | /* |
7591bab1 MD |
3496 | * Process control. The control connection is |
3497 | * prioritized so we don't starve it with high | |
3498 | * throughput tracing data on the data connection. | |
beaad64c | 3499 | */ |
b8aa1682 JD |
3500 | for (i = 0; i < nb_fd; i++) { |
3501 | /* Fetch once the poll data */ | |
beaad64c DG |
3502 | uint32_t revents = LTTNG_POLL_GETEV(&events, i); |
3503 | int pollfd = LTTNG_POLL_GETFD(&events, i); | |
b8aa1682 | 3504 | |
f385ae0a MD |
3505 | health_code_update(); |
3506 | ||
b8aa1682 JD |
3507 | /* Thread quit pipe has been closed. Killing thread. */ |
3508 | ret = check_thread_quit_pipe(pollfd, revents); | |
3509 | if (ret) { | |
095a4ae5 MD |
3510 | err = 0; |
3511 | goto exit; | |
b8aa1682 JD |
3512 | } |
3513 | ||
58eb9381 DG |
3514 | /* Inspect the relay conn pipe for new connection */ |
3515 | if (pollfd == relay_conn_pipe[0]) { | |
03e43155 | 3516 | if (revents & LPOLLIN) { |
90e7d72f JG |
3517 | struct relay_connection *conn; |
3518 | ||
58eb9381 | 3519 | ret = lttng_read(relay_conn_pipe[0], &conn, sizeof(conn)); |
b8aa1682 JD |
3520 | if (ret < 0) { |
3521 | goto error; | |
3522 | } | |
73039936 FD |
3523 | ret = lttng_poll_add(&events, |
3524 | conn->sock->fd, | |
58eb9381 | 3525 | LPOLLIN | LPOLLRDHUP); |
73039936 FD |
3526 | if (ret) { |
3527 | ERR("Failed to add new connection file descriptor to poll set"); | |
3528 | goto error; | |
3529 | } | |
7591bab1 | 3530 | connection_ht_add(relay_connections_ht, conn); |
58eb9381 | 3531 | DBG("Connection socket %d added", conn->sock->fd); |
03e43155 MD |
3532 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
3533 | ERR("Relay connection pipe error"); | |
3534 | goto error; | |
3535 | } else { | |
3536 | ERR("Unexpected poll events %u for sock %d", revents, pollfd); | |
3537 | goto error; | |
b8aa1682 | 3538 | } |
58eb9381 | 3539 | } else { |
90e7d72f JG |
3540 | struct relay_connection *ctrl_conn; |
3541 | ||
7591bab1 | 3542 | ctrl_conn = connection_get_by_sock(relay_connections_ht, pollfd); |
58eb9381 | 3543 | /* If not found, there is a synchronization issue. */ |
90e7d72f | 3544 | assert(ctrl_conn); |
58eb9381 | 3545 | |
03e43155 MD |
3546 | if (ctrl_conn->type == RELAY_DATA) { |
3547 | if (revents & LPOLLIN) { | |
beaad64c DG |
3548 | /* |
3549 | * Flag the last seen data fd not deleted. It will be | |
3550 | * used as the last seen fd if any fd gets deleted in | |
3551 | * this first loop. | |
3552 | */ | |
3553 | last_notdel_data_fd = pollfd; | |
3554 | } | |
03e43155 MD |
3555 | goto put_ctrl_connection; |
3556 | } | |
3557 | assert(ctrl_conn->type == RELAY_CONTROL); | |
3558 | ||
3559 | if (revents & LPOLLIN) { | |
5569b118 JG |
3560 | enum relay_connection_status status; |
3561 | ||
3562 | status = relay_process_control(ctrl_conn); | |
3563 | if (status != RELAY_CONNECTION_STATUS_OK) { | |
fd0f1e3e JR |
3564 | /* |
3565 | * On socket error flag the session as aborted to force | |
3566 | * the cleanup of its stream otherwise it can leak | |
3567 | * during the lifetime of the relayd. | |
3568 | * | |
3569 | * This prevents situations in which streams can be | |
3570 | * left opened because an index was received, the | |
3571 | * control connection is closed, and the data | |
3572 | * connection is closed (uncleanly) before the packet's | |
3573 | * data provided. | |
3574 | * | |
3575 | * Since the control connection encountered an error, | |
3576 | * it is okay to be conservative and close the | |
3577 | * session right now as we can't rely on the protocol | |
3578 | * being respected anymore. | |
3579 | */ | |
3580 | if (status == RELAY_CONNECTION_STATUS_ERROR) { | |
3581 | session_abort(ctrl_conn->session); | |
3582 | } | |
3583 | ||
5569b118 | 3584 | /* Clear the connection on error or close. */ |
5312a3ed JG |
3585 | relay_thread_close_connection(&events, |
3586 | pollfd, | |
03e43155 | 3587 | ctrl_conn); |
03e43155 | 3588 | } |
5312a3ed | 3589 | seen_control = 1; |
03e43155 MD |
3590 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
3591 | relay_thread_close_connection(&events, | |
3592 | pollfd, ctrl_conn); | |
3593 | if (last_seen_data_fd == pollfd) { | |
3594 | last_seen_data_fd = last_notdel_data_fd; | |
3595 | } | |
58eb9381 | 3596 | } else { |
03e43155 MD |
3597 | ERR("Unexpected poll events %u for control sock %d", |
3598 | revents, pollfd); | |
3599 | connection_put(ctrl_conn); | |
3600 | goto error; | |
beaad64c | 3601 | } |
03e43155 | 3602 | put_ctrl_connection: |
7591bab1 | 3603 | connection_put(ctrl_conn); |
beaad64c DG |
3604 | } |
3605 | } | |
3606 | ||
3607 | /* | |
3608 | * The last loop handled a control request, go back to poll to make | |
3609 | * sure we prioritise the control socket. | |
3610 | */ | |
3611 | if (seen_control) { | |
3612 | continue; | |
3613 | } | |
3614 | ||
3615 | if (last_seen_data_fd >= 0) { | |
3616 | for (i = 0; i < nb_fd; i++) { | |
3617 | int pollfd = LTTNG_POLL_GETFD(&events, i); | |
f385ae0a MD |
3618 | |
3619 | health_code_update(); | |
3620 | ||
beaad64c DG |
3621 | if (last_seen_data_fd == pollfd) { |
3622 | idx = i; | |
3623 | break; | |
3624 | } | |
3625 | } | |
3626 | } | |
3627 | ||
3628 | /* Process data connection. */ | |
3629 | for (i = idx + 1; i < nb_fd; i++) { | |
3630 | /* Fetch the poll data. */ | |
3631 | uint32_t revents = LTTNG_POLL_GETEV(&events, i); | |
3632 | int pollfd = LTTNG_POLL_GETFD(&events, i); | |
90e7d72f | 3633 | struct relay_connection *data_conn; |
beaad64c | 3634 | |
f385ae0a MD |
3635 | health_code_update(); |
3636 | ||
fd20dac9 MD |
3637 | if (!revents) { |
3638 | /* No activity for this FD (poll implementation). */ | |
3639 | continue; | |
3640 | } | |
3641 | ||
beaad64c | 3642 | /* Skip the command pipe. It's handled in the first loop. */ |
58eb9381 | 3643 | if (pollfd == relay_conn_pipe[0]) { |
beaad64c DG |
3644 | continue; |
3645 | } | |
3646 | ||
7591bab1 | 3647 | data_conn = connection_get_by_sock(relay_connections_ht, pollfd); |
90e7d72f | 3648 | if (!data_conn) { |
fd20dac9 | 3649 | /* Skip it. Might be removed before. */ |
fd20dac9 MD |
3650 | continue; |
3651 | } | |
03e43155 MD |
3652 | if (data_conn->type == RELAY_CONTROL) { |
3653 | goto put_data_connection; | |
3654 | } | |
3655 | assert(data_conn->type == RELAY_DATA); | |
fd20dac9 MD |
3656 | |
3657 | if (revents & LPOLLIN) { | |
5569b118 JG |
3658 | enum relay_connection_status status; |
3659 | ||
3660 | status = relay_process_data(data_conn); | |
3661 | /* Connection closed or error. */ | |
3662 | if (status != RELAY_CONNECTION_STATUS_OK) { | |
fd0f1e3e JR |
3663 | /* |
3664 | * On socket error flag the session as aborted to force | |
3665 | * the cleanup of its stream otherwise it can leak | |
3666 | * during the lifetime of the relayd. | |
3667 | * | |
3668 | * This prevents situations in which streams can be | |
3669 | * left opened because an index was received, the | |
3670 | * control connection is closed, and the data | |
3671 | * connection is closed (uncleanly) before the packet's | |
3672 | * data provided. | |
3673 | * | |
3674 | * Since the data connection encountered an error, | |
3675 | * it is okay to be conservative and close the | |
3676 | * session right now as we can't rely on the protocol | |
3677 | * being respected anymore. | |
3678 | */ | |
3679 | if (status == RELAY_CONNECTION_STATUS_ERROR) { | |
3680 | session_abort(data_conn->session); | |
3681 | } | |
7591bab1 | 3682 | relay_thread_close_connection(&events, pollfd, |
03e43155 | 3683 | data_conn); |
fd20dac9 MD |
3684 | /* |
3685 | * Every goto restart call sets the last seen fd where | |
3686 | * here we don't really care since we gracefully | |
3687 | * continue the loop after the connection is deleted. | |
3688 | */ | |
3689 | } else { | |
3690 | /* Keep last seen port. */ | |
3691 | last_seen_data_fd = pollfd; | |
7591bab1 | 3692 | connection_put(data_conn); |
fd20dac9 | 3693 | goto restart; |
b8aa1682 | 3694 | } |
03e43155 MD |
3695 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
3696 | relay_thread_close_connection(&events, pollfd, | |
3697 | data_conn); | |
3698 | } else { | |
3699 | ERR("Unknown poll events %u for data sock %d", | |
3700 | revents, pollfd); | |
b8aa1682 | 3701 | } |
03e43155 | 3702 | put_data_connection: |
7591bab1 | 3703 | connection_put(data_conn); |
b8aa1682 | 3704 | } |
beaad64c | 3705 | last_seen_data_fd = -1; |
b8aa1682 JD |
3706 | } |
3707 | ||
f385ae0a MD |
3708 | /* Normal exit, no error */ |
3709 | ret = 0; | |
3710 | ||
095a4ae5 | 3711 | exit: |
b8aa1682 | 3712 | error: |
71efa8ef | 3713 | /* Cleanup remaining connection object. */ |
9d1bbf21 | 3714 | rcu_read_lock(); |
90e7d72f JG |
3715 | cds_lfht_for_each_entry(relay_connections_ht->ht, &iter.iter, |
3716 | destroy_conn, | |
58eb9381 | 3717 | sock_n.node) { |
f385ae0a | 3718 | health_code_update(); |
98ba050e | 3719 | |
fd0f1e3e | 3720 | session_abort(destroy_conn->session); |
98ba050e | 3721 | |
7591bab1 MD |
3722 | /* |
3723 | * No need to grab another ref, because we own | |
3724 | * destroy_conn. | |
3725 | */ | |
3726 | relay_thread_close_connection(&events, destroy_conn->sock->fd, | |
3727 | destroy_conn); | |
b8aa1682 | 3728 | } |
94d49140 | 3729 | rcu_read_unlock(); |
7591bab1 MD |
3730 | |
3731 | lttng_poll_clean(&events); | |
7d2f7452 | 3732 | error_poll_create: |
b8aa1682 | 3733 | lttng_ht_destroy(relay_connections_ht); |
095a4ae5 | 3734 | relay_connections_ht_error: |
58eb9381 DG |
3735 | /* Close relay conn pipes */ |
3736 | utils_close_pipe(relay_conn_pipe); | |
095a4ae5 MD |
3737 | if (err) { |
3738 | DBG("Thread exited with error"); | |
3739 | } | |
b8aa1682 | 3740 | DBG("Worker thread cleanup complete"); |
9b5e0863 | 3741 | error_testpoint: |
f385ae0a MD |
3742 | if (err) { |
3743 | health_error(); | |
3744 | ERR("Health error occurred in %s", __func__); | |
3745 | } | |
3746 | health_unregister(health_relayd); | |
9d1bbf21 | 3747 | rcu_unregister_thread(); |
b4aacfdc | 3748 | lttng_relay_stop_threads(); |
b8aa1682 JD |
3749 | return NULL; |
3750 | } | |
3751 | ||
3752 | /* | |
3753 | * Create the relay command pipe to wake thread_manage_apps. | |
3754 | * Closed in cleanup(). | |
3755 | */ | |
58eb9381 | 3756 | static int create_relay_conn_pipe(void) |
b8aa1682 | 3757 | { |
a02de639 | 3758 | int ret; |
b8aa1682 | 3759 | |
58eb9381 | 3760 | ret = utils_create_pipe_cloexec(relay_conn_pipe); |
b8aa1682 | 3761 | |
b8aa1682 JD |
3762 | return ret; |
3763 | } | |
3764 | ||
3765 | /* | |
3766 | * main | |
3767 | */ | |
3768 | int main(int argc, char **argv) | |
3769 | { | |
178a0557 | 3770 | int ret = 0, retval = 0; |
b8aa1682 JD |
3771 | void *status; |
3772 | ||
2a10de3b JR |
3773 | /* Parse environment variables */ |
3774 | ret = parse_env_options(); | |
3775 | if (ret) { | |
3776 | retval = -1; | |
3777 | goto exit_options; | |
3778 | } | |
3779 | ||
3780 | /* | |
3781 | * Parse arguments. | |
3782 | * Command line arguments overwrite environment. | |
3783 | */ | |
b8aa1682 | 3784 | progname = argv[0]; |
178a0557 MD |
3785 | if (set_options(argc, argv)) { |
3786 | retval = -1; | |
3787 | goto exit_options; | |
b8aa1682 JD |
3788 | } |
3789 | ||
178a0557 MD |
3790 | if (set_signal_handler()) { |
3791 | retval = -1; | |
3792 | goto exit_options; | |
b8aa1682 JD |
3793 | } |
3794 | ||
a3bc3918 JR |
3795 | relayd_config_log(); |
3796 | ||
3797 | if (opt_print_version) { | |
3798 | print_version(); | |
3799 | retval = 0; | |
3800 | goto exit_options; | |
3801 | } | |
3802 | ||
4d513a50 DG |
3803 | /* Try to create directory if -o, --output is specified. */ |
3804 | if (opt_output_path) { | |
994fa64f DG |
3805 | if (*opt_output_path != '/') { |
3806 | ERR("Please specify an absolute path for -o, --output PATH"); | |
178a0557 MD |
3807 | retval = -1; |
3808 | goto exit_options; | |
994fa64f DG |
3809 | } |
3810 | ||
d77dded2 JG |
3811 | ret = utils_mkdir_recursive(opt_output_path, S_IRWXU | S_IRWXG, |
3812 | -1, -1); | |
4d513a50 DG |
3813 | if (ret < 0) { |
3814 | ERR("Unable to create %s", opt_output_path); | |
178a0557 MD |
3815 | retval = -1; |
3816 | goto exit_options; | |
4d513a50 DG |
3817 | } |
3818 | } | |
3819 | ||
b8aa1682 | 3820 | /* Daemonize */ |
b5218ffb | 3821 | if (opt_daemon || opt_background) { |
3fd27398 MD |
3822 | int i; |
3823 | ||
3824 | ret = lttng_daemonize(&child_ppid, &recv_child_signal, | |
3825 | !opt_background); | |
b8aa1682 | 3826 | if (ret < 0) { |
178a0557 MD |
3827 | retval = -1; |
3828 | goto exit_options; | |
b8aa1682 | 3829 | } |
3fd27398 MD |
3830 | |
3831 | /* | |
3832 | * We are in the child. Make sure all other file | |
3833 | * descriptors are closed, in case we are called with | |
3834 | * more opened file descriptors than the standard ones. | |
3835 | */ | |
3836 | for (i = 3; i < sysconf(_SC_OPEN_MAX); i++) { | |
3837 | (void) close(i); | |
3838 | } | |
3839 | } | |
3840 | ||
ce9ee1fb JR |
3841 | if (opt_working_directory) { |
3842 | ret = utils_change_working_directory(opt_working_directory); | |
3843 | if (ret) { | |
3844 | /* All errors are already logged. */ | |
3845 | goto exit_options; | |
3846 | } | |
3847 | } | |
3848 | ||
23c8ff50 JG |
3849 | sessiond_trace_chunk_registry = sessiond_trace_chunk_registry_create(); |
3850 | if (!sessiond_trace_chunk_registry) { | |
3851 | ERR("Failed to initialize session daemon trace chunk registry"); | |
3852 | retval = -1; | |
3853 | goto exit_sessiond_trace_chunk_registry; | |
3854 | } | |
3855 | ||
178a0557 MD |
3856 | /* Initialize thread health monitoring */ |
3857 | health_relayd = health_app_create(NR_HEALTH_RELAYD_TYPES); | |
3858 | if (!health_relayd) { | |
3859 | PERROR("health_app_create error"); | |
3860 | retval = -1; | |
3861 | goto exit_health_app_create; | |
3862 | } | |
3863 | ||
3fd27398 | 3864 | /* Create thread quit pipe */ |
178a0557 MD |
3865 | if (init_thread_quit_pipe()) { |
3866 | retval = -1; | |
3867 | goto exit_init_data; | |
b8aa1682 JD |
3868 | } |
3869 | ||
b8aa1682 | 3870 | /* Setup the thread apps communication pipe. */ |
178a0557 MD |
3871 | if (create_relay_conn_pipe()) { |
3872 | retval = -1; | |
3873 | goto exit_init_data; | |
b8aa1682 JD |
3874 | } |
3875 | ||
3876 | /* Init relay command queue. */ | |
8bdee6e2 | 3877 | cds_wfcq_init(&relay_conn_queue.head, &relay_conn_queue.tail); |
b8aa1682 | 3878 | |
554831e7 MD |
3879 | /* Initialize communication library */ |
3880 | lttcomm_init(); | |
87e45c13 | 3881 | lttcomm_inet_init(); |
554831e7 | 3882 | |
d3e2ba59 | 3883 | /* tables of sessions indexed by session ID */ |
7591bab1 MD |
3884 | sessions_ht = lttng_ht_new(0, LTTNG_HT_TYPE_U64); |
3885 | if (!sessions_ht) { | |
178a0557 MD |
3886 | retval = -1; |
3887 | goto exit_init_data; | |
d3e2ba59 JD |
3888 | } |
3889 | ||
3890 | /* tables of streams indexed by stream ID */ | |
2a174661 | 3891 | relay_streams_ht = lttng_ht_new(0, LTTNG_HT_TYPE_U64); |
d3e2ba59 | 3892 | if (!relay_streams_ht) { |
178a0557 MD |
3893 | retval = -1; |
3894 | goto exit_init_data; | |
d3e2ba59 JD |
3895 | } |
3896 | ||
3897 | /* tables of streams indexed by stream ID */ | |
92c6ca54 DG |
3898 | viewer_streams_ht = lttng_ht_new(0, LTTNG_HT_TYPE_U64); |
3899 | if (!viewer_streams_ht) { | |
178a0557 MD |
3900 | retval = -1; |
3901 | goto exit_init_data; | |
55706a7d MD |
3902 | } |
3903 | ||
65931c8b | 3904 | ret = utils_create_pipe(health_quit_pipe); |
178a0557 MD |
3905 | if (ret) { |
3906 | retval = -1; | |
3907 | goto exit_health_quit_pipe; | |
65931c8b MD |
3908 | } |
3909 | ||
3910 | /* Create thread to manage the client socket */ | |
1a1a34b4 | 3911 | ret = pthread_create(&health_thread, default_pthread_attr(), |
65931c8b | 3912 | thread_manage_health, (void *) NULL); |
178a0557 MD |
3913 | if (ret) { |
3914 | errno = ret; | |
65931c8b | 3915 | PERROR("pthread_create health"); |
178a0557 MD |
3916 | retval = -1; |
3917 | goto exit_health_thread; | |
65931c8b MD |
3918 | } |
3919 | ||
b8aa1682 | 3920 | /* Setup the dispatcher thread */ |
1a1a34b4 | 3921 | ret = pthread_create(&dispatcher_thread, default_pthread_attr(), |
b8aa1682 | 3922 | relay_thread_dispatcher, (void *) NULL); |
178a0557 MD |
3923 | if (ret) { |
3924 | errno = ret; | |
b8aa1682 | 3925 | PERROR("pthread_create dispatcher"); |
178a0557 MD |
3926 | retval = -1; |
3927 | goto exit_dispatcher_thread; | |
b8aa1682 JD |
3928 | } |
3929 | ||
3930 | /* Setup the worker thread */ | |
1a1a34b4 | 3931 | ret = pthread_create(&worker_thread, default_pthread_attr(), |
7591bab1 | 3932 | relay_thread_worker, NULL); |
178a0557 MD |
3933 | if (ret) { |
3934 | errno = ret; | |
b8aa1682 | 3935 | PERROR("pthread_create worker"); |
178a0557 MD |
3936 | retval = -1; |
3937 | goto exit_worker_thread; | |
b8aa1682 JD |
3938 | } |
3939 | ||
3940 | /* Setup the listener thread */ | |
1a1a34b4 | 3941 | ret = pthread_create(&listener_thread, default_pthread_attr(), |
b8aa1682 | 3942 | relay_thread_listener, (void *) NULL); |
178a0557 MD |
3943 | if (ret) { |
3944 | errno = ret; | |
b8aa1682 | 3945 | PERROR("pthread_create listener"); |
178a0557 MD |
3946 | retval = -1; |
3947 | goto exit_listener_thread; | |
b8aa1682 JD |
3948 | } |
3949 | ||
7591bab1 | 3950 | ret = relayd_live_create(live_uri); |
178a0557 | 3951 | if (ret) { |
d3e2ba59 | 3952 | ERR("Starting live viewer threads"); |
178a0557 | 3953 | retval = -1; |
50138f51 | 3954 | goto exit_live; |
d3e2ba59 JD |
3955 | } |
3956 | ||
178a0557 MD |
3957 | /* |
3958 | * This is where we start awaiting program completion (e.g. through | |
3959 | * signal that asks threads to teardown). | |
3960 | */ | |
3961 | ||
3962 | ret = relayd_live_join(); | |
3963 | if (ret) { | |
3964 | retval = -1; | |
3965 | } | |
50138f51 | 3966 | exit_live: |
178a0557 | 3967 | |
b8aa1682 | 3968 | ret = pthread_join(listener_thread, &status); |
178a0557 MD |
3969 | if (ret) { |
3970 | errno = ret; | |
3971 | PERROR("pthread_join listener_thread"); | |
3972 | retval = -1; | |
b8aa1682 JD |
3973 | } |
3974 | ||
178a0557 | 3975 | exit_listener_thread: |
b8aa1682 | 3976 | ret = pthread_join(worker_thread, &status); |
178a0557 MD |
3977 | if (ret) { |
3978 | errno = ret; | |
3979 | PERROR("pthread_join worker_thread"); | |
3980 | retval = -1; | |
b8aa1682 JD |
3981 | } |
3982 | ||
178a0557 | 3983 | exit_worker_thread: |
b8aa1682 | 3984 | ret = pthread_join(dispatcher_thread, &status); |
178a0557 MD |
3985 | if (ret) { |
3986 | errno = ret; | |
3987 | PERROR("pthread_join dispatcher_thread"); | |
3988 | retval = -1; | |
b8aa1682 | 3989 | } |
178a0557 | 3990 | exit_dispatcher_thread: |
42415026 | 3991 | |
65931c8b | 3992 | ret = pthread_join(health_thread, &status); |
178a0557 MD |
3993 | if (ret) { |
3994 | errno = ret; | |
3995 | PERROR("pthread_join health_thread"); | |
3996 | retval = -1; | |
65931c8b | 3997 | } |
178a0557 | 3998 | exit_health_thread: |
65931c8b | 3999 | |
65931c8b | 4000 | utils_close_pipe(health_quit_pipe); |
178a0557 | 4001 | exit_health_quit_pipe: |
65931c8b | 4002 | |
178a0557 | 4003 | exit_init_data: |
55706a7d | 4004 | health_app_destroy(health_relayd); |
23c8ff50 | 4005 | sessiond_trace_chunk_registry_destroy(sessiond_trace_chunk_registry); |
55706a7d | 4006 | exit_health_app_create: |
23c8ff50 | 4007 | exit_sessiond_trace_chunk_registry: |
178a0557 | 4008 | exit_options: |
4d62fbf8 MD |
4009 | /* |
4010 | * Wait for all pending call_rcu work to complete before tearing | |
4011 | * down data structures. call_rcu worker may be trying to | |
4012 | * perform lookups in those structures. | |
4013 | */ | |
4014 | rcu_barrier(); | |
7591bab1 MD |
4015 | relayd_cleanup(); |
4016 | ||
4017 | /* Ensure all prior call_rcu are done. */ | |
4018 | rcu_barrier(); | |
d3e2ba59 | 4019 | |
178a0557 | 4020 | if (!retval) { |
b8aa1682 | 4021 | exit(EXIT_SUCCESS); |
178a0557 MD |
4022 | } else { |
4023 | exit(EXIT_FAILURE); | |
b8aa1682 | 4024 | } |
b8aa1682 | 4025 | } |