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; |
35ab25e5 | 101 | static int opt_daemon, opt_background, opt_print_version, opt_allow_clear = 1; |
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', }, | |
35ab25e5 | 192 | { "disallow-clear", 0, 0, 'x' }, |
cd60b05a JG |
193 | { NULL, 0, 0, 0, }, |
194 | }; | |
195 | ||
3a904098 | 196 | static const char *config_ignore_options[] = { "help", "config", "version" }; |
cd60b05a | 197 | |
a3bc3918 JR |
198 | static void print_version(void) { |
199 | fprintf(stdout, "%s\n", VERSION); | |
200 | } | |
201 | ||
202 | static void relayd_config_log(void) | |
203 | { | |
204 | DBG("LTTng-relayd " VERSION " - " VERSION_NAME "%s%s", | |
205 | GIT_VERSION[0] == '\0' ? "" : " - " GIT_VERSION, | |
206 | EXTRA_VERSION_NAME[0] == '\0' ? "" : " - " EXTRA_VERSION_NAME); | |
207 | if (EXTRA_VERSION_DESCRIPTION[0] != '\0') { | |
208 | DBG("LTTng-relayd extra version description:\n\t" EXTRA_VERSION_DESCRIPTION "\n"); | |
209 | } | |
7f5ed73a JR |
210 | if (EXTRA_VERSION_PATCHES[0] != '\0') { |
211 | DBG("LTTng-relayd extra patches:\n\t" EXTRA_VERSION_PATCHES "\n"); | |
212 | } | |
a3bc3918 JR |
213 | } |
214 | ||
cd60b05a JG |
215 | /* |
216 | * Take an option from the getopt output and set it in the right variable to be | |
217 | * used later. | |
218 | * | |
219 | * Return 0 on success else a negative value. | |
220 | */ | |
7591bab1 | 221 | static int set_option(int opt, const char *arg, const char *optname) |
b8aa1682 | 222 | { |
cd60b05a JG |
223 | int ret; |
224 | ||
225 | switch (opt) { | |
226 | case 0: | |
227 | fprintf(stderr, "option %s", optname); | |
228 | if (arg) { | |
229 | fprintf(stderr, " with arg %s\n", arg); | |
230 | } | |
231 | break; | |
232 | case 'C': | |
e8fa9fb0 MD |
233 | if (lttng_is_setuid_setgid()) { |
234 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
235 | "-C, --control-port"); | |
236 | } else { | |
237 | ret = uri_parse(arg, &control_uri); | |
238 | if (ret < 0) { | |
239 | ERR("Invalid control URI specified"); | |
240 | goto end; | |
241 | } | |
242 | if (control_uri->port == 0) { | |
243 | control_uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
244 | } | |
cd60b05a JG |
245 | } |
246 | break; | |
247 | case 'D': | |
e8fa9fb0 MD |
248 | if (lttng_is_setuid_setgid()) { |
249 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
250 | "-D, -data-port"); | |
251 | } else { | |
252 | ret = uri_parse(arg, &data_uri); | |
253 | if (ret < 0) { | |
254 | ERR("Invalid data URI specified"); | |
255 | goto end; | |
256 | } | |
257 | if (data_uri->port == 0) { | |
258 | data_uri->port = DEFAULT_NETWORK_DATA_PORT; | |
259 | } | |
cd60b05a JG |
260 | } |
261 | break; | |
8d5c808e | 262 | case 'L': |
e8fa9fb0 MD |
263 | if (lttng_is_setuid_setgid()) { |
264 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
265 | "-L, -live-port"); | |
266 | } else { | |
267 | ret = uri_parse(arg, &live_uri); | |
268 | if (ret < 0) { | |
269 | ERR("Invalid live URI specified"); | |
270 | goto end; | |
271 | } | |
272 | if (live_uri->port == 0) { | |
273 | live_uri->port = DEFAULT_NETWORK_VIEWER_PORT; | |
274 | } | |
8d5c808e AM |
275 | } |
276 | break; | |
cd60b05a JG |
277 | case 'd': |
278 | opt_daemon = 1; | |
279 | break; | |
b5218ffb MD |
280 | case 'b': |
281 | opt_background = 1; | |
282 | break; | |
cd60b05a | 283 | case 'g': |
e8fa9fb0 MD |
284 | if (lttng_is_setuid_setgid()) { |
285 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
286 | "-g, --group"); | |
287 | } else { | |
288 | tracing_group_name = strdup(arg); | |
289 | if (tracing_group_name == NULL) { | |
290 | ret = -errno; | |
291 | PERROR("strdup"); | |
292 | goto end; | |
293 | } | |
294 | tracing_group_name_override = 1; | |
330a40bb | 295 | } |
cd60b05a JG |
296 | break; |
297 | case 'h': | |
4fc83d94 | 298 | ret = utils_show_help(8, "lttng-relayd", help_msg); |
655b5cc1 | 299 | if (ret) { |
4fc83d94 | 300 | ERR("Cannot show --help for `lttng-relayd`"); |
655b5cc1 PP |
301 | perror("exec"); |
302 | } | |
cd60b05a | 303 | exit(EXIT_FAILURE); |
3a904098 | 304 | case 'V': |
a3bc3918 JR |
305 | opt_print_version = 1; |
306 | break; | |
cd60b05a | 307 | case 'o': |
e8fa9fb0 MD |
308 | if (lttng_is_setuid_setgid()) { |
309 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
310 | "-o, --output"); | |
311 | } else { | |
312 | ret = asprintf(&opt_output_path, "%s", arg); | |
313 | if (ret < 0) { | |
314 | ret = -errno; | |
315 | PERROR("asprintf opt_output_path"); | |
316 | goto end; | |
317 | } | |
cd60b05a JG |
318 | } |
319 | break; | |
ce9ee1fb JR |
320 | case 'w': |
321 | if (lttng_is_setuid_setgid()) { | |
322 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
323 | "-w, --working-directory"); | |
324 | } else { | |
325 | ret = asprintf(&opt_working_directory, "%s", arg); | |
326 | if (ret < 0) { | |
327 | ret = -errno; | |
328 | PERROR("asprintf opt_working_directory"); | |
329 | goto end; | |
330 | } | |
331 | } | |
332 | break; | |
333 | ||
cd60b05a JG |
334 | case 'v': |
335 | /* Verbose level can increase using multiple -v */ | |
336 | if (arg) { | |
337 | lttng_opt_verbose = config_parse_value(arg); | |
338 | } else { | |
849e5b7b DG |
339 | /* Only 3 level of verbosity (-vvv). */ |
340 | if (lttng_opt_verbose < 3) { | |
341 | lttng_opt_verbose += 1; | |
342 | } | |
cd60b05a JG |
343 | } |
344 | break; | |
a8b66566 JR |
345 | case 's': |
346 | if (opt_group_output_by != RELAYD_GROUP_OUTPUT_BY_UNKNOWN) { | |
347 | ERR("Cannot set --group-output-by-session, another --group-output-by argument is present"); | |
348 | exit(EXIT_FAILURE); | |
349 | } | |
350 | opt_group_output_by = RELAYD_GROUP_OUTPUT_BY_SESSION; | |
351 | break; | |
352 | case 'p': | |
353 | if (opt_group_output_by != RELAYD_GROUP_OUTPUT_BY_UNKNOWN) { | |
354 | ERR("Cannot set --group-output-by-host, another --group-output-by argument is present"); | |
355 | exit(EXIT_FAILURE); | |
356 | } | |
357 | opt_group_output_by = RELAYD_GROUP_OUTPUT_BY_HOST; | |
358 | break; | |
35ab25e5 MD |
359 | case 'x': |
360 | /* Disallow clear */ | |
361 | opt_allow_clear = 0; | |
362 | break; | |
cd60b05a JG |
363 | default: |
364 | /* Unknown option or other error. | |
365 | * Error is printed by getopt, just return */ | |
366 | ret = -1; | |
367 | goto end; | |
368 | } | |
369 | ||
370 | /* All good. */ | |
371 | ret = 0; | |
372 | ||
373 | end: | |
374 | return ret; | |
375 | } | |
376 | ||
377 | /* | |
378 | * config_entry_handler_cb used to handle options read from a config file. | |
f40ef1d5 | 379 | * See config_entry_handler_cb comment in common/config/session-config.h for the |
cd60b05a JG |
380 | * return value conventions. |
381 | */ | |
7591bab1 | 382 | static int config_entry_handler(const struct config_entry *entry, void *unused) |
cd60b05a JG |
383 | { |
384 | int ret = 0, i; | |
385 | ||
386 | if (!entry || !entry->name || !entry->value) { | |
387 | ret = -EINVAL; | |
388 | goto end; | |
389 | } | |
390 | ||
391 | /* Check if the option is to be ignored */ | |
392 | for (i = 0; i < sizeof(config_ignore_options) / sizeof(char *); i++) { | |
393 | if (!strcmp(entry->name, config_ignore_options[i])) { | |
394 | goto end; | |
395 | } | |
396 | } | |
397 | ||
398 | for (i = 0; i < (sizeof(long_options) / sizeof(struct option)) - 1; i++) { | |
399 | /* Ignore if entry name is not fully matched. */ | |
400 | if (strcmp(entry->name, long_options[i].name)) { | |
401 | continue; | |
402 | } | |
403 | ||
404 | /* | |
7591bab1 MD |
405 | * If the option takes no argument on the command line, |
406 | * we have to check if the value is "true". We support | |
407 | * non-zero numeric values, true, on and yes. | |
cd60b05a JG |
408 | */ |
409 | if (!long_options[i].has_arg) { | |
410 | ret = config_parse_value(entry->value); | |
411 | if (ret <= 0) { | |
412 | if (ret) { | |
413 | WARN("Invalid configuration value \"%s\" for option %s", | |
414 | entry->value, entry->name); | |
415 | } | |
416 | /* False, skip boolean config option. */ | |
417 | goto end; | |
418 | } | |
419 | } | |
420 | ||
421 | ret = set_option(long_options[i].val, entry->value, entry->name); | |
422 | goto end; | |
423 | } | |
424 | ||
425 | WARN("Unrecognized option \"%s\" in daemon configuration file.", | |
426 | entry->name); | |
427 | ||
428 | end: | |
429 | return ret; | |
430 | } | |
431 | ||
2a10de3b JR |
432 | static int parse_env_options(void) |
433 | { | |
434 | int ret = 0; | |
435 | char *value = NULL; | |
436 | ||
437 | value = lttng_secure_getenv(DEFAULT_LTTNG_RELAYD_WORKING_DIRECTORY_ENV); | |
438 | if (value) { | |
439 | opt_working_directory = strdup(value); | |
440 | if (!opt_working_directory) { | |
441 | ERR("Failed to allocate working directory string (\"%s\")", | |
442 | value); | |
443 | ret = -1; | |
444 | } | |
445 | } | |
446 | return ret; | |
447 | } | |
448 | ||
7591bab1 | 449 | static int set_options(int argc, char **argv) |
cd60b05a | 450 | { |
178a0557 | 451 | int c, ret = 0, option_index = 0, retval = 0; |
cd60b05a JG |
452 | int orig_optopt = optopt, orig_optind = optind; |
453 | char *default_address, *optstring; | |
454 | const char *config_path = NULL; | |
455 | ||
456 | optstring = utils_generate_optstring(long_options, | |
457 | sizeof(long_options) / sizeof(struct option)); | |
458 | if (!optstring) { | |
178a0557 | 459 | retval = -ENOMEM; |
cd60b05a JG |
460 | goto exit; |
461 | } | |
462 | ||
463 | /* Check for the --config option */ | |
464 | ||
465 | while ((c = getopt_long(argc, argv, optstring, long_options, | |
466 | &option_index)) != -1) { | |
467 | if (c == '?') { | |
178a0557 | 468 | retval = -EINVAL; |
cd60b05a JG |
469 | goto exit; |
470 | } else if (c != 'f') { | |
471 | continue; | |
472 | } | |
473 | ||
e8fa9fb0 MD |
474 | if (lttng_is_setuid_setgid()) { |
475 | WARN("Getting '%s' argument from setuid/setgid binary refused for security reasons.", | |
476 | "-f, --config"); | |
477 | } else { | |
478 | config_path = utils_expand_path(optarg); | |
479 | if (!config_path) { | |
480 | ERR("Failed to resolve path: %s", optarg); | |
481 | } | |
cd60b05a JG |
482 | } |
483 | } | |
484 | ||
485 | ret = config_get_section_entries(config_path, config_section_name, | |
486 | config_entry_handler, NULL); | |
487 | if (ret) { | |
488 | if (ret > 0) { | |
489 | ERR("Invalid configuration option at line %i", ret); | |
cd60b05a | 490 | } |
178a0557 | 491 | retval = -1; |
cd60b05a JG |
492 | goto exit; |
493 | } | |
b8aa1682 | 494 | |
cd60b05a JG |
495 | /* Reset getopt's global state */ |
496 | optopt = orig_optopt; | |
497 | optind = orig_optind; | |
b8aa1682 | 498 | while (1) { |
cd60b05a | 499 | c = getopt_long(argc, argv, optstring, long_options, &option_index); |
b8aa1682 JD |
500 | if (c == -1) { |
501 | break; | |
502 | } | |
503 | ||
cd60b05a JG |
504 | ret = set_option(c, optarg, long_options[option_index].name); |
505 | if (ret < 0) { | |
178a0557 | 506 | retval = -1; |
b8aa1682 JD |
507 | goto exit; |
508 | } | |
509 | } | |
510 | ||
511 | /* assign default values */ | |
512 | if (control_uri == NULL) { | |
fa91dc52 MD |
513 | ret = asprintf(&default_address, |
514 | "tcp://" DEFAULT_NETWORK_CONTROL_BIND_ADDRESS ":%d", | |
515 | DEFAULT_NETWORK_CONTROL_PORT); | |
b8aa1682 JD |
516 | if (ret < 0) { |
517 | PERROR("asprintf default data address"); | |
178a0557 | 518 | retval = -1; |
b8aa1682 JD |
519 | goto exit; |
520 | } | |
521 | ||
522 | ret = uri_parse(default_address, &control_uri); | |
523 | free(default_address); | |
524 | if (ret < 0) { | |
525 | ERR("Invalid control URI specified"); | |
178a0557 | 526 | retval = -1; |
b8aa1682 JD |
527 | goto exit; |
528 | } | |
529 | } | |
530 | if (data_uri == NULL) { | |
fa91dc52 MD |
531 | ret = asprintf(&default_address, |
532 | "tcp://" DEFAULT_NETWORK_DATA_BIND_ADDRESS ":%d", | |
533 | DEFAULT_NETWORK_DATA_PORT); | |
b8aa1682 JD |
534 | if (ret < 0) { |
535 | PERROR("asprintf default data address"); | |
178a0557 | 536 | retval = -1; |
b8aa1682 JD |
537 | goto exit; |
538 | } | |
539 | ||
540 | ret = uri_parse(default_address, &data_uri); | |
541 | free(default_address); | |
542 | if (ret < 0) { | |
543 | ERR("Invalid data URI specified"); | |
178a0557 | 544 | retval = -1; |
b8aa1682 JD |
545 | goto exit; |
546 | } | |
547 | } | |
d3e2ba59 | 548 | if (live_uri == NULL) { |
fa91dc52 MD |
549 | ret = asprintf(&default_address, |
550 | "tcp://" DEFAULT_NETWORK_VIEWER_BIND_ADDRESS ":%d", | |
551 | DEFAULT_NETWORK_VIEWER_PORT); | |
d3e2ba59 JD |
552 | if (ret < 0) { |
553 | PERROR("asprintf default viewer control address"); | |
178a0557 | 554 | retval = -1; |
d3e2ba59 JD |
555 | goto exit; |
556 | } | |
557 | ||
558 | ret = uri_parse(default_address, &live_uri); | |
559 | free(default_address); | |
560 | if (ret < 0) { | |
561 | ERR("Invalid viewer control URI specified"); | |
178a0557 | 562 | retval = -1; |
d3e2ba59 JD |
563 | goto exit; |
564 | } | |
565 | } | |
b8aa1682 | 566 | |
a8b66566 JR |
567 | if (opt_group_output_by == RELAYD_GROUP_OUTPUT_BY_UNKNOWN) { |
568 | opt_group_output_by = RELAYD_GROUP_OUTPUT_BY_HOST; | |
569 | } | |
35ab25e5 MD |
570 | if (opt_allow_clear) { |
571 | /* Check if env variable exists. */ | |
572 | const char *value = lttng_secure_getenv(DEFAULT_LTTNG_RELAYD_DISALLOW_CLEAR_ENV); | |
573 | if (value) { | |
574 | ret = config_parse_value(value); | |
575 | if (ret < 0) { | |
576 | ERR("Invalid value for %s specified", DEFAULT_LTTNG_RELAYD_DISALLOW_CLEAR_ENV); | |
577 | retval = -1; | |
578 | goto exit; | |
579 | } | |
580 | opt_allow_clear = !ret; | |
581 | } | |
582 | } | |
a8b66566 | 583 | |
b8aa1682 | 584 | exit: |
cd60b05a | 585 | free(optstring); |
178a0557 | 586 | return retval; |
b8aa1682 JD |
587 | } |
588 | ||
7591bab1 MD |
589 | static void print_global_objects(void) |
590 | { | |
591 | rcu_register_thread(); | |
592 | ||
593 | print_viewer_streams(); | |
594 | print_relay_streams(); | |
595 | print_sessions(); | |
596 | ||
597 | rcu_unregister_thread(); | |
598 | } | |
599 | ||
b8aa1682 JD |
600 | /* |
601 | * Cleanup the daemon | |
602 | */ | |
7591bab1 | 603 | static void relayd_cleanup(void) |
b8aa1682 | 604 | { |
7591bab1 MD |
605 | print_global_objects(); |
606 | ||
b8aa1682 JD |
607 | DBG("Cleaning up"); |
608 | ||
178a0557 MD |
609 | if (viewer_streams_ht) |
610 | lttng_ht_destroy(viewer_streams_ht); | |
611 | if (relay_streams_ht) | |
612 | lttng_ht_destroy(relay_streams_ht); | |
7591bab1 MD |
613 | if (sessions_ht) |
614 | lttng_ht_destroy(sessions_ht); | |
178a0557 | 615 | |
095a4ae5 | 616 | free(opt_output_path); |
ce9ee1fb | 617 | free(opt_working_directory); |
095a4ae5 | 618 | |
a02de639 CB |
619 | /* Close thread quit pipes */ |
620 | utils_close_pipe(thread_quit_pipe); | |
621 | ||
710c1f73 DG |
622 | uri_free(control_uri); |
623 | uri_free(data_uri); | |
8d5c808e | 624 | /* Live URI is freed in the live thread. */ |
cd60b05a JG |
625 | |
626 | if (tracing_group_name_override) { | |
627 | free((void *) tracing_group_name); | |
628 | } | |
b8aa1682 JD |
629 | } |
630 | ||
631 | /* | |
632 | * Write to writable pipe used to notify a thread. | |
633 | */ | |
7591bab1 | 634 | static int notify_thread_pipe(int wpipe) |
b8aa1682 | 635 | { |
6cd525e8 | 636 | ssize_t ret; |
b8aa1682 | 637 | |
6cd525e8 MD |
638 | ret = lttng_write(wpipe, "!", 1); |
639 | if (ret < 1) { | |
b8aa1682 | 640 | PERROR("write poll pipe"); |
b4aacfdc | 641 | goto end; |
b8aa1682 | 642 | } |
b4aacfdc MD |
643 | ret = 0; |
644 | end: | |
b8aa1682 JD |
645 | return ret; |
646 | } | |
647 | ||
7591bab1 | 648 | static int notify_health_quit_pipe(int *pipe) |
65931c8b | 649 | { |
6cd525e8 | 650 | ssize_t ret; |
65931c8b | 651 | |
6cd525e8 MD |
652 | ret = lttng_write(pipe[1], "4", 1); |
653 | if (ret < 1) { | |
65931c8b | 654 | PERROR("write relay health quit"); |
b4aacfdc | 655 | goto end; |
65931c8b | 656 | } |
b4aacfdc MD |
657 | ret = 0; |
658 | end: | |
659 | return ret; | |
65931c8b MD |
660 | } |
661 | ||
b8aa1682 | 662 | /* |
b4aacfdc | 663 | * Stop all relayd and relayd-live threads. |
b8aa1682 | 664 | */ |
b4aacfdc | 665 | int lttng_relay_stop_threads(void) |
b8aa1682 | 666 | { |
b4aacfdc | 667 | int retval = 0; |
b8aa1682 JD |
668 | |
669 | /* Stopping all threads */ | |
670 | DBG("Terminating all threads"); | |
b4aacfdc | 671 | if (notify_thread_pipe(thread_quit_pipe[1])) { |
b8aa1682 | 672 | ERR("write error on thread quit pipe"); |
b4aacfdc | 673 | retval = -1; |
b8aa1682 JD |
674 | } |
675 | ||
b4aacfdc MD |
676 | if (notify_health_quit_pipe(health_quit_pipe)) { |
677 | ERR("write error on health quit pipe"); | |
678 | } | |
65931c8b | 679 | |
b8aa1682 | 680 | /* Dispatch thread */ |
26c9d55e | 681 | CMM_STORE_SHARED(dispatch_thread_exit, 1); |
58eb9381 | 682 | futex_nto1_wake(&relay_conn_queue.futex); |
178a0557 | 683 | |
b4aacfdc | 684 | if (relayd_live_stop()) { |
178a0557 | 685 | ERR("Error stopping live threads"); |
b4aacfdc | 686 | retval = -1; |
178a0557 | 687 | } |
b4aacfdc | 688 | return retval; |
b8aa1682 JD |
689 | } |
690 | ||
691 | /* | |
692 | * Signal handler for the daemon | |
693 | * | |
694 | * Simply stop all worker threads, leaving main() return gracefully after | |
695 | * joining all threads and calling cleanup(). | |
696 | */ | |
7591bab1 | 697 | static void sighandler(int sig) |
b8aa1682 JD |
698 | { |
699 | switch (sig) { | |
b8aa1682 JD |
700 | case SIGINT: |
701 | DBG("SIGINT caught"); | |
b4aacfdc MD |
702 | if (lttng_relay_stop_threads()) { |
703 | ERR("Error stopping threads"); | |
704 | } | |
b8aa1682 JD |
705 | break; |
706 | case SIGTERM: | |
707 | DBG("SIGTERM caught"); | |
b4aacfdc MD |
708 | if (lttng_relay_stop_threads()) { |
709 | ERR("Error stopping threads"); | |
710 | } | |
b8aa1682 | 711 | break; |
3fd27398 MD |
712 | case SIGUSR1: |
713 | CMM_STORE_SHARED(recv_child_signal, 1); | |
714 | break; | |
b8aa1682 JD |
715 | default: |
716 | break; | |
717 | } | |
718 | } | |
719 | ||
720 | /* | |
721 | * Setup signal handler for : | |
722 | * SIGINT, SIGTERM, SIGPIPE | |
723 | */ | |
7591bab1 | 724 | static int set_signal_handler(void) |
b8aa1682 JD |
725 | { |
726 | int ret = 0; | |
727 | struct sigaction sa; | |
728 | sigset_t sigset; | |
729 | ||
730 | if ((ret = sigemptyset(&sigset)) < 0) { | |
731 | PERROR("sigemptyset"); | |
732 | return ret; | |
733 | } | |
734 | ||
b8aa1682 JD |
735 | sa.sa_mask = sigset; |
736 | sa.sa_flags = 0; | |
0072e5e2 MD |
737 | |
738 | sa.sa_handler = sighandler; | |
b8aa1682 JD |
739 | if ((ret = sigaction(SIGTERM, &sa, NULL)) < 0) { |
740 | PERROR("sigaction"); | |
741 | return ret; | |
742 | } | |
743 | ||
744 | if ((ret = sigaction(SIGINT, &sa, NULL)) < 0) { | |
745 | PERROR("sigaction"); | |
746 | return ret; | |
747 | } | |
748 | ||
0072e5e2 | 749 | if ((ret = sigaction(SIGUSR1, &sa, NULL)) < 0) { |
b8aa1682 JD |
750 | PERROR("sigaction"); |
751 | return ret; | |
752 | } | |
753 | ||
0072e5e2 MD |
754 | sa.sa_handler = SIG_IGN; |
755 | if ((ret = sigaction(SIGPIPE, &sa, NULL)) < 0) { | |
3fd27398 MD |
756 | PERROR("sigaction"); |
757 | return ret; | |
758 | } | |
759 | ||
760 | DBG("Signal handler set for SIGTERM, SIGUSR1, SIGPIPE and SIGINT"); | |
b8aa1682 JD |
761 | |
762 | return ret; | |
763 | } | |
764 | ||
3fd27398 MD |
765 | void lttng_relay_notify_ready(void) |
766 | { | |
767 | /* Notify the parent of the fork() process that we are ready. */ | |
768 | if (opt_daemon || opt_background) { | |
769 | if (uatomic_sub_return(<tng_relay_ready, 1) == 0) { | |
770 | kill(child_ppid, SIGUSR1); | |
771 | } | |
772 | } | |
773 | } | |
774 | ||
b8aa1682 JD |
775 | /* |
776 | * Init thread quit pipe. | |
777 | * | |
778 | * Return -1 on error or 0 if all pipes are created. | |
779 | */ | |
7591bab1 | 780 | static int init_thread_quit_pipe(void) |
b8aa1682 | 781 | { |
a02de639 | 782 | int ret; |
b8aa1682 | 783 | |
a02de639 | 784 | ret = utils_create_pipe_cloexec(thread_quit_pipe); |
b8aa1682 | 785 | |
b8aa1682 JD |
786 | return ret; |
787 | } | |
788 | ||
789 | /* | |
790 | * Create a poll set with O_CLOEXEC and add the thread quit pipe to the set. | |
791 | */ | |
7591bab1 | 792 | static int create_thread_poll_set(struct lttng_poll_event *events, int size) |
b8aa1682 JD |
793 | { |
794 | int ret; | |
795 | ||
796 | if (events == NULL || size == 0) { | |
797 | ret = -1; | |
798 | goto error; | |
799 | } | |
800 | ||
801 | ret = lttng_poll_create(events, size, LTTNG_CLOEXEC); | |
802 | if (ret < 0) { | |
803 | goto error; | |
804 | } | |
805 | ||
806 | /* Add quit pipe */ | |
c7759e6a | 807 | ret = lttng_poll_add(events, thread_quit_pipe[0], LPOLLIN | LPOLLERR); |
b8aa1682 JD |
808 | if (ret < 0) { |
809 | goto error; | |
810 | } | |
811 | ||
812 | return 0; | |
813 | ||
814 | error: | |
815 | return ret; | |
816 | } | |
817 | ||
818 | /* | |
819 | * Check if the thread quit pipe was triggered. | |
820 | * | |
821 | * Return 1 if it was triggered else 0; | |
822 | */ | |
7591bab1 | 823 | static int check_thread_quit_pipe(int fd, uint32_t events) |
b8aa1682 JD |
824 | { |
825 | if (fd == thread_quit_pipe[0] && (events & LPOLLIN)) { | |
826 | return 1; | |
827 | } | |
828 | ||
829 | return 0; | |
830 | } | |
831 | ||
832 | /* | |
833 | * Create and init socket from uri. | |
834 | */ | |
7591bab1 | 835 | static struct lttcomm_sock *relay_socket_create(struct lttng_uri *uri) |
b8aa1682 JD |
836 | { |
837 | int ret; | |
838 | struct lttcomm_sock *sock = NULL; | |
839 | ||
840 | sock = lttcomm_alloc_sock_from_uri(uri); | |
841 | if (sock == NULL) { | |
842 | ERR("Allocating socket"); | |
843 | goto error; | |
844 | } | |
845 | ||
846 | ret = lttcomm_create_sock(sock); | |
847 | if (ret < 0) { | |
848 | goto error; | |
849 | } | |
850 | DBG("Listening on sock %d", sock->fd); | |
851 | ||
852 | ret = sock->ops->bind(sock); | |
853 | if (ret < 0) { | |
2288467f | 854 | PERROR("Failed to bind socket"); |
b8aa1682 JD |
855 | goto error; |
856 | } | |
857 | ||
858 | ret = sock->ops->listen(sock, -1); | |
859 | if (ret < 0) { | |
860 | goto error; | |
861 | ||
862 | } | |
863 | ||
864 | return sock; | |
865 | ||
866 | error: | |
867 | if (sock) { | |
868 | lttcomm_destroy_sock(sock); | |
869 | } | |
870 | return NULL; | |
871 | } | |
872 | ||
873 | /* | |
874 | * This thread manages the listening for new connections on the network | |
875 | */ | |
7591bab1 | 876 | static void *relay_thread_listener(void *data) |
b8aa1682 | 877 | { |
095a4ae5 | 878 | int i, ret, pollfd, err = -1; |
b8aa1682 JD |
879 | uint32_t revents, nb_fd; |
880 | struct lttng_poll_event events; | |
881 | struct lttcomm_sock *control_sock, *data_sock; | |
882 | ||
b8aa1682 JD |
883 | DBG("[thread] Relay listener started"); |
884 | ||
55706a7d MD |
885 | health_register(health_relayd, HEALTH_RELAYD_TYPE_LISTENER); |
886 | ||
f385ae0a MD |
887 | health_code_update(); |
888 | ||
7591bab1 | 889 | control_sock = relay_socket_create(control_uri); |
b8aa1682 | 890 | if (!control_sock) { |
095a4ae5 | 891 | goto error_sock_control; |
b8aa1682 JD |
892 | } |
893 | ||
7591bab1 | 894 | data_sock = relay_socket_create(data_uri); |
b8aa1682 | 895 | if (!data_sock) { |
095a4ae5 | 896 | goto error_sock_relay; |
b8aa1682 JD |
897 | } |
898 | ||
899 | /* | |
7591bab1 MD |
900 | * Pass 3 as size here for the thread quit pipe, control and |
901 | * data socket. | |
b8aa1682 JD |
902 | */ |
903 | ret = create_thread_poll_set(&events, 3); | |
904 | if (ret < 0) { | |
905 | goto error_create_poll; | |
906 | } | |
907 | ||
908 | /* Add the control socket */ | |
909 | ret = lttng_poll_add(&events, control_sock->fd, LPOLLIN | LPOLLRDHUP); | |
910 | if (ret < 0) { | |
911 | goto error_poll_add; | |
912 | } | |
913 | ||
914 | /* Add the data socket */ | |
915 | ret = lttng_poll_add(&events, data_sock->fd, LPOLLIN | LPOLLRDHUP); | |
916 | if (ret < 0) { | |
917 | goto error_poll_add; | |
918 | } | |
919 | ||
3fd27398 MD |
920 | lttng_relay_notify_ready(); |
921 | ||
9b5e0863 MD |
922 | if (testpoint(relayd_thread_listener)) { |
923 | goto error_testpoint; | |
924 | } | |
925 | ||
b8aa1682 | 926 | while (1) { |
f385ae0a MD |
927 | health_code_update(); |
928 | ||
b8aa1682 JD |
929 | DBG("Listener accepting connections"); |
930 | ||
b8aa1682 | 931 | restart: |
f385ae0a | 932 | health_poll_entry(); |
b8aa1682 | 933 | ret = lttng_poll_wait(&events, -1); |
f385ae0a | 934 | health_poll_exit(); |
b8aa1682 JD |
935 | if (ret < 0) { |
936 | /* | |
937 | * Restart interrupted system call. | |
938 | */ | |
939 | if (errno == EINTR) { | |
940 | goto restart; | |
941 | } | |
942 | goto error; | |
943 | } | |
944 | ||
0d9c5d77 DG |
945 | nb_fd = ret; |
946 | ||
b8aa1682 JD |
947 | DBG("Relay new connection received"); |
948 | for (i = 0; i < nb_fd; i++) { | |
f385ae0a MD |
949 | health_code_update(); |
950 | ||
b8aa1682 JD |
951 | /* Fetch once the poll data */ |
952 | revents = LTTNG_POLL_GETEV(&events, i); | |
953 | pollfd = LTTNG_POLL_GETFD(&events, i); | |
954 | ||
955 | /* Thread quit pipe has been closed. Killing thread. */ | |
956 | ret = check_thread_quit_pipe(pollfd, revents); | |
957 | if (ret) { | |
095a4ae5 MD |
958 | err = 0; |
959 | goto exit; | |
b8aa1682 JD |
960 | } |
961 | ||
03e43155 | 962 | if (revents & LPOLLIN) { |
4b7f17b2 | 963 | /* |
7591bab1 MD |
964 | * A new connection is requested, therefore a |
965 | * sessiond/consumerd connection is allocated in | |
966 | * this thread, enqueued to a global queue and | |
967 | * dequeued (and freed) in the worker thread. | |
4b7f17b2 | 968 | */ |
58eb9381 DG |
969 | int val = 1; |
970 | struct relay_connection *new_conn; | |
4b7f17b2 | 971 | struct lttcomm_sock *newsock; |
7591bab1 | 972 | enum connection_type type; |
b8aa1682 JD |
973 | |
974 | if (pollfd == data_sock->fd) { | |
7591bab1 | 975 | type = RELAY_DATA; |
b8aa1682 | 976 | newsock = data_sock->ops->accept(data_sock); |
58eb9381 DG |
977 | DBG("Relay data connection accepted, socket %d", |
978 | newsock->fd); | |
4b7f17b2 MD |
979 | } else { |
980 | assert(pollfd == control_sock->fd); | |
7591bab1 | 981 | type = RELAY_CONTROL; |
b8aa1682 | 982 | newsock = control_sock->ops->accept(control_sock); |
58eb9381 DG |
983 | DBG("Relay control connection accepted, socket %d", |
984 | newsock->fd); | |
b8aa1682 | 985 | } |
58eb9381 DG |
986 | if (!newsock) { |
987 | PERROR("accepting sock"); | |
58eb9381 DG |
988 | goto error; |
989 | } | |
990 | ||
991 | ret = setsockopt(newsock->fd, SOL_SOCKET, SO_REUSEADDR, &val, | |
992 | sizeof(val)); | |
b8aa1682 JD |
993 | if (ret < 0) { |
994 | PERROR("setsockopt inet"); | |
4b7f17b2 | 995 | lttcomm_destroy_sock(newsock); |
b8aa1682 JD |
996 | goto error; |
997 | } | |
f056029c JR |
998 | |
999 | ret = socket_apply_keep_alive_config(newsock->fd); | |
1000 | if (ret < 0) { | |
1001 | ERR("Failed to apply TCP keep-alive configuration on socket (%i)", | |
1002 | newsock->fd); | |
1003 | lttcomm_destroy_sock(newsock); | |
1004 | goto error; | |
1005 | } | |
1006 | ||
7591bab1 MD |
1007 | new_conn = connection_create(newsock, type); |
1008 | if (!new_conn) { | |
1009 | lttcomm_destroy_sock(newsock); | |
1010 | goto error; | |
1011 | } | |
58eb9381 DG |
1012 | |
1013 | /* Enqueue request for the dispatcher thread. */ | |
8bdee6e2 SM |
1014 | cds_wfcq_enqueue(&relay_conn_queue.head, &relay_conn_queue.tail, |
1015 | &new_conn->qnode); | |
b8aa1682 JD |
1016 | |
1017 | /* | |
7591bab1 MD |
1018 | * Wake the dispatch queue futex. |
1019 | * Implicit memory barrier with the | |
1020 | * exchange in cds_wfcq_enqueue. | |
b8aa1682 | 1021 | */ |
58eb9381 | 1022 | futex_nto1_wake(&relay_conn_queue.futex); |
03e43155 MD |
1023 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
1024 | ERR("socket poll error"); | |
1025 | goto error; | |
1026 | } else { | |
1027 | ERR("Unexpected poll events %u for sock %d", revents, pollfd); | |
1028 | goto error; | |
b8aa1682 JD |
1029 | } |
1030 | } | |
1031 | } | |
1032 | ||
095a4ae5 | 1033 | exit: |
b8aa1682 JD |
1034 | error: |
1035 | error_poll_add: | |
9b5e0863 | 1036 | error_testpoint: |
b8aa1682 JD |
1037 | lttng_poll_clean(&events); |
1038 | error_create_poll: | |
095a4ae5 MD |
1039 | if (data_sock->fd >= 0) { |
1040 | ret = data_sock->ops->close(data_sock); | |
b8aa1682 JD |
1041 | if (ret) { |
1042 | PERROR("close"); | |
1043 | } | |
b8aa1682 | 1044 | } |
095a4ae5 MD |
1045 | lttcomm_destroy_sock(data_sock); |
1046 | error_sock_relay: | |
1047 | if (control_sock->fd >= 0) { | |
1048 | ret = control_sock->ops->close(control_sock); | |
b8aa1682 JD |
1049 | if (ret) { |
1050 | PERROR("close"); | |
1051 | } | |
b8aa1682 | 1052 | } |
095a4ae5 MD |
1053 | lttcomm_destroy_sock(control_sock); |
1054 | error_sock_control: | |
1055 | if (err) { | |
f385ae0a MD |
1056 | health_error(); |
1057 | ERR("Health error occurred in %s", __func__); | |
095a4ae5 | 1058 | } |
55706a7d | 1059 | health_unregister(health_relayd); |
b8aa1682 | 1060 | DBG("Relay listener thread cleanup complete"); |
b4aacfdc | 1061 | lttng_relay_stop_threads(); |
b8aa1682 JD |
1062 | return NULL; |
1063 | } | |
1064 | ||
1065 | /* | |
1066 | * This thread manages the dispatching of the requests to worker threads | |
1067 | */ | |
7591bab1 | 1068 | static void *relay_thread_dispatcher(void *data) |
b8aa1682 | 1069 | { |
6cd525e8 MD |
1070 | int err = -1; |
1071 | ssize_t ret; | |
8bdee6e2 | 1072 | struct cds_wfcq_node *node; |
58eb9381 | 1073 | struct relay_connection *new_conn = NULL; |
b8aa1682 JD |
1074 | |
1075 | DBG("[thread] Relay dispatcher started"); | |
1076 | ||
55706a7d MD |
1077 | health_register(health_relayd, HEALTH_RELAYD_TYPE_DISPATCHER); |
1078 | ||
9b5e0863 MD |
1079 | if (testpoint(relayd_thread_dispatcher)) { |
1080 | goto error_testpoint; | |
1081 | } | |
1082 | ||
f385ae0a MD |
1083 | health_code_update(); |
1084 | ||
0ed3b1a8 | 1085 | for (;;) { |
f385ae0a MD |
1086 | health_code_update(); |
1087 | ||
b8aa1682 | 1088 | /* Atomically prepare the queue futex */ |
58eb9381 | 1089 | futex_nto1_prepare(&relay_conn_queue.futex); |
b8aa1682 | 1090 | |
0ed3b1a8 MD |
1091 | if (CMM_LOAD_SHARED(dispatch_thread_exit)) { |
1092 | break; | |
1093 | } | |
1094 | ||
b8aa1682 | 1095 | do { |
f385ae0a MD |
1096 | health_code_update(); |
1097 | ||
b8aa1682 | 1098 | /* Dequeue commands */ |
8bdee6e2 SM |
1099 | node = cds_wfcq_dequeue_blocking(&relay_conn_queue.head, |
1100 | &relay_conn_queue.tail); | |
b8aa1682 JD |
1101 | if (node == NULL) { |
1102 | DBG("Woken up but nothing in the relay command queue"); | |
1103 | /* Continue thread execution */ | |
1104 | break; | |
1105 | } | |
58eb9381 | 1106 | new_conn = caa_container_of(node, struct relay_connection, qnode); |
b8aa1682 | 1107 | |
58eb9381 | 1108 | DBG("Dispatching request waiting on sock %d", new_conn->sock->fd); |
b8aa1682 JD |
1109 | |
1110 | /* | |
7591bab1 MD |
1111 | * Inform worker thread of the new request. This |
1112 | * call is blocking so we can be assured that | |
1113 | * the data will be read at some point in time | |
1114 | * or wait to the end of the world :) | |
b8aa1682 | 1115 | */ |
58eb9381 DG |
1116 | ret = lttng_write(relay_conn_pipe[1], &new_conn, sizeof(new_conn)); |
1117 | if (ret < 0) { | |
1118 | PERROR("write connection pipe"); | |
7591bab1 | 1119 | connection_put(new_conn); |
b8aa1682 JD |
1120 | goto error; |
1121 | } | |
1122 | } while (node != NULL); | |
1123 | ||
1124 | /* Futex wait on queue. Blocking call on futex() */ | |
f385ae0a | 1125 | health_poll_entry(); |
58eb9381 | 1126 | futex_nto1_wait(&relay_conn_queue.futex); |
f385ae0a | 1127 | health_poll_exit(); |
b8aa1682 JD |
1128 | } |
1129 | ||
f385ae0a MD |
1130 | /* Normal exit, no error */ |
1131 | err = 0; | |
1132 | ||
b8aa1682 | 1133 | error: |
9b5e0863 | 1134 | error_testpoint: |
f385ae0a MD |
1135 | if (err) { |
1136 | health_error(); | |
1137 | ERR("Health error occurred in %s", __func__); | |
1138 | } | |
55706a7d | 1139 | health_unregister(health_relayd); |
b8aa1682 | 1140 | DBG("Dispatch thread dying"); |
b4aacfdc | 1141 | lttng_relay_stop_threads(); |
b8aa1682 JD |
1142 | return NULL; |
1143 | } | |
1144 | ||
298a25ca JG |
1145 | static bool session_streams_have_index(const struct relay_session *session) |
1146 | { | |
1147 | return session->minor >= 4 && !session->snapshot; | |
1148 | } | |
1149 | ||
c5b6f4f0 DG |
1150 | /* |
1151 | * Handle the RELAYD_CREATE_SESSION command. | |
1152 | * | |
1153 | * On success, send back the session id or else return a negative value. | |
1154 | */ | |
5312a3ed JG |
1155 | static int relay_create_session(const struct lttcomm_relayd_hdr *recv_hdr, |
1156 | struct relay_connection *conn, | |
1157 | const struct lttng_buffer_view *payload) | |
c5b6f4f0 | 1158 | { |
5312a3ed JG |
1159 | int ret = 0; |
1160 | ssize_t send_ret; | |
4c6885d2 | 1161 | struct relay_session *session = NULL; |
ecd1a12f | 1162 | struct lttcomm_relayd_create_session_reply_2_11 reply = {}; |
1e791a74 JG |
1163 | char session_name[LTTNG_NAME_MAX] = {}; |
1164 | char hostname[LTTNG_HOST_NAME_MAX] = {}; | |
7591bab1 MD |
1165 | uint32_t live_timer = 0; |
1166 | bool snapshot = false; | |
46ef2188 | 1167 | bool session_name_contains_creation_timestamp = false; |
23c8ff50 | 1168 | /* Left nil for peers < 2.11. */ |
6fa5fe7c | 1169 | char base_path[LTTNG_PATH_MAX] = {}; |
23c8ff50 | 1170 | lttng_uuid sessiond_uuid = {}; |
1e791a74 JG |
1171 | LTTNG_OPTIONAL(uint64_t) id_sessiond = {}; |
1172 | LTTNG_OPTIONAL(uint64_t) current_chunk_id = {}; | |
db1da059 | 1173 | LTTNG_OPTIONAL(time_t) creation_time = {}; |
ecd1a12f MD |
1174 | struct lttng_dynamic_buffer reply_payload; |
1175 | ||
1176 | lttng_dynamic_buffer_init(&reply_payload); | |
c5b6f4f0 | 1177 | |
f86f6389 JR |
1178 | if (conn->minor < 4) { |
1179 | /* From 2.1 to 2.3 */ | |
1180 | ret = 0; | |
1181 | } else if (conn->minor >= 4 && conn->minor < 11) { | |
1182 | /* From 2.4 to 2.10 */ | |
5312a3ed | 1183 | ret = cmd_create_session_2_4(payload, session_name, |
7591bab1 | 1184 | hostname, &live_timer, &snapshot); |
f86f6389 | 1185 | } else { |
84fa4db5 | 1186 | bool has_current_chunk; |
db1da059 JG |
1187 | uint64_t current_chunk_id_value; |
1188 | time_t creation_time_value; | |
1189 | uint64_t id_sessiond_value; | |
84fa4db5 | 1190 | |
f86f6389 | 1191 | /* From 2.11 to ... */ |
db1da059 | 1192 | ret = cmd_create_session_2_11(payload, session_name, hostname, |
6fa5fe7c | 1193 | base_path, &live_timer, &snapshot, &id_sessiond_value, |
db1da059 | 1194 | sessiond_uuid, &has_current_chunk, |
46ef2188 MD |
1195 | ¤t_chunk_id_value, &creation_time_value, |
1196 | &session_name_contains_creation_timestamp); | |
23c8ff50 JG |
1197 | if (lttng_uuid_is_nil(sessiond_uuid)) { |
1198 | /* The nil UUID is reserved for pre-2.11 clients. */ | |
1199 | ERR("Illegal nil UUID announced by peer in create session command"); | |
1200 | ret = -1; | |
1201 | goto send_reply; | |
1202 | } | |
db1da059 JG |
1203 | LTTNG_OPTIONAL_SET(&id_sessiond, id_sessiond_value); |
1204 | LTTNG_OPTIONAL_SET(&creation_time, creation_time_value); | |
1205 | if (has_current_chunk) { | |
1206 | LTTNG_OPTIONAL_SET(¤t_chunk_id, | |
1207 | current_chunk_id_value); | |
1208 | } | |
7591bab1 | 1209 | } |
f86f6389 | 1210 | |
7591bab1 MD |
1211 | if (ret < 0) { |
1212 | goto send_reply; | |
d3e2ba59 JD |
1213 | } |
1214 | ||
6fa5fe7c | 1215 | session = session_create(session_name, hostname, base_path, live_timer, |
1e791a74 JG |
1216 | snapshot, sessiond_uuid, |
1217 | id_sessiond.is_set ? &id_sessiond.value : NULL, | |
1218 | current_chunk_id.is_set ? ¤t_chunk_id.value : NULL, | |
db1da059 | 1219 | creation_time.is_set ? &creation_time.value : NULL, |
46ef2188 MD |
1220 | conn->major, conn->minor, |
1221 | session_name_contains_creation_timestamp); | |
7591bab1 MD |
1222 | if (!session) { |
1223 | ret = -1; | |
1224 | goto send_reply; | |
1225 | } | |
1226 | assert(!conn->session); | |
1227 | conn->session = session; | |
c5b6f4f0 DG |
1228 | DBG("Created session %" PRIu64, session->id); |
1229 | ||
ecd1a12f | 1230 | reply.generic.session_id = htobe64(session->id); |
7591bab1 MD |
1231 | |
1232 | send_reply: | |
c5b6f4f0 | 1233 | if (ret < 0) { |
ecd1a12f | 1234 | reply.generic.ret_code = htobe32(LTTNG_ERR_FATAL); |
c5b6f4f0 | 1235 | } else { |
ecd1a12f | 1236 | reply.generic.ret_code = htobe32(LTTNG_OK); |
c5b6f4f0 DG |
1237 | } |
1238 | ||
ecd1a12f MD |
1239 | if (conn->minor < 11) { |
1240 | /* From 2.1 to 2.10 */ | |
1241 | ret = lttng_dynamic_buffer_append(&reply_payload, | |
1242 | &reply.generic, sizeof(reply.generic)); | |
1243 | if (ret) { | |
1244 | ERR("Failed to append \"create session\" command reply header to payload buffer"); | |
1245 | ret = -1; | |
1246 | goto end; | |
1247 | } | |
1248 | } else { | |
1249 | const uint32_t output_path_length = | |
8d382dd4 | 1250 | session ? strlen(session->output_path) + 1 : 0; |
ecd1a12f MD |
1251 | |
1252 | reply.output_path_length = htobe32(output_path_length); | |
8d382dd4 JG |
1253 | ret = lttng_dynamic_buffer_append( |
1254 | &reply_payload, &reply, sizeof(reply)); | |
ecd1a12f MD |
1255 | if (ret) { |
1256 | ERR("Failed to append \"create session\" command reply header to payload buffer"); | |
1257 | goto end; | |
1258 | } | |
1259 | ||
8d382dd4 JG |
1260 | if (output_path_length) { |
1261 | ret = lttng_dynamic_buffer_append(&reply_payload, | |
1262 | session->output_path, | |
1263 | output_path_length); | |
1264 | if (ret) { | |
1265 | ERR("Failed to append \"create session\" command reply path to payload buffer"); | |
1266 | goto end; | |
1267 | } | |
ecd1a12f MD |
1268 | } |
1269 | } | |
1270 | ||
1271 | send_ret = conn->sock->ops->sendmsg(conn->sock, reply_payload.data, | |
1272 | reply_payload.size, 0); | |
1273 | if (send_ret < (ssize_t) reply_payload.size) { | |
1274 | ERR("Failed to send \"create session\" command reply of %zu bytes (ret = %zd)", | |
1275 | reply_payload.size, send_ret); | |
5312a3ed | 1276 | ret = -1; |
c5b6f4f0 | 1277 | } |
ecd1a12f | 1278 | end: |
4c6885d2 JG |
1279 | if (ret < 0 && session) { |
1280 | session_put(session); | |
1281 | } | |
ecd1a12f | 1282 | lttng_dynamic_buffer_reset(&reply_payload); |
c5b6f4f0 DG |
1283 | return ret; |
1284 | } | |
1285 | ||
a4baae1b JD |
1286 | /* |
1287 | * When we have received all the streams and the metadata for a channel, | |
1288 | * we make them visible to the viewer threads. | |
1289 | */ | |
7591bab1 | 1290 | static void publish_connection_local_streams(struct relay_connection *conn) |
a4baae1b | 1291 | { |
7591bab1 MD |
1292 | struct relay_stream *stream; |
1293 | struct relay_session *session = conn->session; | |
a4baae1b | 1294 | |
7591bab1 MD |
1295 | /* |
1296 | * We publish all streams belonging to a session atomically wrt | |
1297 | * session lock. | |
1298 | */ | |
1299 | pthread_mutex_lock(&session->lock); | |
1300 | rcu_read_lock(); | |
1301 | cds_list_for_each_entry_rcu(stream, &session->recv_list, | |
1302 | recv_node) { | |
1303 | stream_publish(stream); | |
a4baae1b | 1304 | } |
7591bab1 | 1305 | rcu_read_unlock(); |
a4baae1b | 1306 | |
7591bab1 MD |
1307 | /* |
1308 | * Inform the viewer that there are new streams in the session. | |
1309 | */ | |
1310 | if (session->viewer_attached) { | |
1311 | uatomic_set(&session->new_streams, 1); | |
1312 | } | |
1313 | pthread_mutex_unlock(&session->lock); | |
a4baae1b JD |
1314 | } |
1315 | ||
348a81dc JG |
1316 | static int conform_channel_path(char *channel_path) |
1317 | { | |
1318 | int ret = 0; | |
1319 | ||
1320 | if (strstr("../", channel_path)) { | |
1321 | ERR("Refusing channel path as it walks up the path hierarchy: \"%s\"", | |
1322 | channel_path); | |
1323 | ret = -1; | |
1324 | goto end; | |
1325 | } | |
1326 | ||
1327 | if (*channel_path == '/') { | |
1328 | const size_t len = strlen(channel_path); | |
1329 | ||
1330 | /* | |
1331 | * Channel paths from peers prior to 2.11 are expressed as an | |
1332 | * absolute path that is, in reality, relative to the relay | |
1333 | * daemon's output directory. Remove the leading slash so it | |
1334 | * is correctly interpreted as a relative path later on. | |
1335 | * | |
1336 | * len (and not len - 1) is used to copy the trailing NULL. | |
1337 | */ | |
1338 | bcopy(channel_path + 1, channel_path, len); | |
1339 | } | |
1340 | end: | |
1341 | return ret; | |
1342 | } | |
1343 | ||
b8aa1682 JD |
1344 | /* |
1345 | * relay_add_stream: allocate a new stream for a session | |
1346 | */ | |
5312a3ed JG |
1347 | static int relay_add_stream(const struct lttcomm_relayd_hdr *recv_hdr, |
1348 | struct relay_connection *conn, | |
1349 | const struct lttng_buffer_view *payload) | |
b8aa1682 | 1350 | { |
7591bab1 MD |
1351 | int ret; |
1352 | ssize_t send_ret; | |
58eb9381 | 1353 | struct relay_session *session = conn->session; |
b8aa1682 JD |
1354 | struct relay_stream *stream = NULL; |
1355 | struct lttcomm_relayd_status_stream reply; | |
4030a636 | 1356 | struct ctf_trace *trace = NULL; |
7591bab1 MD |
1357 | uint64_t stream_handle = -1ULL; |
1358 | char *path_name = NULL, *channel_name = NULL; | |
1359 | uint64_t tracefile_size = 0, tracefile_count = 0; | |
348a81dc | 1360 | LTTNG_OPTIONAL(uint64_t) stream_chunk_id = {}; |
b8aa1682 | 1361 | |
5312a3ed | 1362 | if (!session || !conn->version_check_done) { |
b8aa1682 JD |
1363 | ERR("Trying to add a stream before version check"); |
1364 | ret = -1; | |
1365 | goto end_no_session; | |
1366 | } | |
1367 | ||
2f21a469 JR |
1368 | if (session->minor == 1) { |
1369 | /* For 2.1 */ | |
5312a3ed | 1370 | ret = cmd_recv_stream_2_1(payload, &path_name, |
7591bab1 | 1371 | &channel_name); |
2f21a469 JR |
1372 | } else if (session->minor > 1 && session->minor < 11) { |
1373 | /* From 2.2 to 2.10 */ | |
5312a3ed | 1374 | ret = cmd_recv_stream_2_2(payload, &path_name, |
7591bab1 | 1375 | &channel_name, &tracefile_size, &tracefile_count); |
2f21a469 JR |
1376 | } else { |
1377 | /* From 2.11 to ... */ | |
1378 | ret = cmd_recv_stream_2_11(payload, &path_name, | |
0b50e4b3 JG |
1379 | &channel_name, &tracefile_size, &tracefile_count, |
1380 | &stream_chunk_id.value); | |
1381 | stream_chunk_id.is_set = true; | |
0f907de1 | 1382 | } |
2f21a469 | 1383 | |
0f907de1 | 1384 | if (ret < 0) { |
7591bab1 | 1385 | goto send_reply; |
b8aa1682 JD |
1386 | } |
1387 | ||
348a81dc JG |
1388 | if (conform_channel_path(path_name)) { |
1389 | goto send_reply; | |
1390 | } | |
1391 | ||
2a635488 JR |
1392 | /* |
1393 | * Backward compatibility for --group-output-by-session. | |
1394 | * Prior to lttng 2.11, the complete path is passed by the stream. | |
1395 | * Starting at 2.11, lttng-relayd uses chunk. When dealing with producer | |
1396 | * >=2.11 the chunk is responsible for the output path. When dealing | |
1397 | * with producer < 2.11 the chunk output_path is the root output path | |
1398 | * and the stream carries the complete path (path_name). | |
1399 | * To support --group-output-by-session with older producer (<2.11), we | |
1400 | * need to craft the path based on the stream path. | |
1401 | */ | |
1402 | if (opt_group_output_by == RELAYD_GROUP_OUTPUT_BY_SESSION) { | |
1403 | if (conn->minor < 4) { | |
1404 | /* | |
1405 | * From 2.1 to 2.3, the session_name is not passed on | |
1406 | * the RELAYD_CREATE_SESSION command. The session name | |
1407 | * is necessary to detect the presence of a base_path | |
1408 | * inside the stream path. Without it we cannot perform | |
1409 | * a valid group-output-by-session transformation. | |
1410 | */ | |
1411 | WARN("Unable to perform a --group-by-session transformation for session %" PRIu64 | |
1412 | " for stream with path \"%s\" as it is produced by a peer using a protocol older than v2.4", | |
1413 | session->id, path_name); | |
1414 | } else if (conn->minor >= 4 && conn->minor < 11) { | |
1415 | char *group_by_session_path_name; | |
1416 | ||
1417 | assert(session->session_name[0] != '\0'); | |
1418 | ||
1419 | group_by_session_path_name = | |
1420 | backward_compat_group_by_session( | |
1421 | path_name, | |
1422 | session->session_name); | |
1423 | if (!group_by_session_path_name) { | |
1424 | ERR("Failed to apply group by session to stream of session %" PRIu64, | |
1425 | session->id); | |
1426 | goto send_reply; | |
1427 | } | |
1428 | ||
1429 | DBG("Transformed session path from \"%s\" to \"%s\" to honor per-session name grouping", | |
1430 | path_name, group_by_session_path_name); | |
1431 | ||
1432 | free(path_name); | |
1433 | path_name = group_by_session_path_name; | |
1434 | } | |
1435 | } | |
1436 | ||
7591bab1 | 1437 | trace = ctf_trace_get_by_path_or_create(session, path_name); |
2a174661 | 1438 | if (!trace) { |
7591bab1 | 1439 | goto send_reply; |
2a174661 | 1440 | } |
2a174661 | 1441 | |
2a635488 | 1442 | /* This stream here has one reference on the trace. */ |
7591bab1 MD |
1443 | pthread_mutex_lock(&last_relay_stream_id_lock); |
1444 | stream_handle = ++last_relay_stream_id; | |
1445 | pthread_mutex_unlock(&last_relay_stream_id_lock); | |
d3e2ba59 | 1446 | |
7591bab1 MD |
1447 | /* We pass ownership of path_name and channel_name. */ |
1448 | stream = stream_create(trace, stream_handle, path_name, | |
348a81dc | 1449 | channel_name, tracefile_size, tracefile_count); |
7591bab1 MD |
1450 | path_name = NULL; |
1451 | channel_name = NULL; | |
a4baae1b | 1452 | |
2a174661 | 1453 | /* |
7591bab1 MD |
1454 | * Streams are the owners of their trace. Reference to trace is |
1455 | * kept within stream_create(). | |
2a174661 | 1456 | */ |
7591bab1 | 1457 | ctf_trace_put(trace); |
d3e2ba59 | 1458 | |
7591bab1 | 1459 | send_reply: |
53efb85a | 1460 | memset(&reply, 0, sizeof(reply)); |
7591bab1 MD |
1461 | reply.handle = htobe64(stream_handle); |
1462 | if (!stream) { | |
f73fabfd | 1463 | reply.ret_code = htobe32(LTTNG_ERR_UNK); |
b8aa1682 | 1464 | } else { |
f73fabfd | 1465 | reply.ret_code = htobe32(LTTNG_OK); |
b8aa1682 | 1466 | } |
5af40280 | 1467 | |
58eb9381 | 1468 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
b8aa1682 | 1469 | sizeof(struct lttcomm_relayd_status_stream), 0); |
5312a3ed JG |
1470 | if (send_ret < (ssize_t) sizeof(reply)) { |
1471 | ERR("Failed to send \"add stream\" command reply (ret = %zd)", | |
1472 | send_ret); | |
1473 | ret = -1; | |
b8aa1682 JD |
1474 | } |
1475 | ||
1476 | end_no_session: | |
7591bab1 MD |
1477 | free(path_name); |
1478 | free(channel_name); | |
0f907de1 | 1479 | return ret; |
b8aa1682 JD |
1480 | } |
1481 | ||
173af62f DG |
1482 | /* |
1483 | * relay_close_stream: close a specific stream | |
1484 | */ | |
5312a3ed JG |
1485 | static int relay_close_stream(const struct lttcomm_relayd_hdr *recv_hdr, |
1486 | struct relay_connection *conn, | |
1487 | const struct lttng_buffer_view *payload) | |
173af62f | 1488 | { |
5312a3ed JG |
1489 | int ret; |
1490 | ssize_t send_ret; | |
58eb9381 | 1491 | struct relay_session *session = conn->session; |
173af62f DG |
1492 | struct lttcomm_relayd_close_stream stream_info; |
1493 | struct lttcomm_relayd_generic_reply reply; | |
1494 | struct relay_stream *stream; | |
173af62f DG |
1495 | |
1496 | DBG("Close stream received"); | |
1497 | ||
5312a3ed | 1498 | if (!session || !conn->version_check_done) { |
173af62f DG |
1499 | ERR("Trying to close a stream before version check"); |
1500 | ret = -1; | |
1501 | goto end_no_session; | |
1502 | } | |
1503 | ||
5312a3ed JG |
1504 | if (payload->size < sizeof(stream_info)) { |
1505 | ERR("Unexpected payload size in \"relay_close_stream\": expected >= %zu bytes, got %zu bytes", | |
1506 | sizeof(stream_info), payload->size); | |
173af62f DG |
1507 | ret = -1; |
1508 | goto end_no_session; | |
1509 | } | |
5312a3ed JG |
1510 | memcpy(&stream_info, payload->data, sizeof(stream_info)); |
1511 | stream_info.stream_id = be64toh(stream_info.stream_id); | |
1512 | stream_info.last_net_seq_num = be64toh(stream_info.last_net_seq_num); | |
173af62f | 1513 | |
5312a3ed | 1514 | stream = stream_get_by_id(stream_info.stream_id); |
173af62f DG |
1515 | if (!stream) { |
1516 | ret = -1; | |
7591bab1 | 1517 | goto end; |
173af62f | 1518 | } |
77f7bd85 MD |
1519 | |
1520 | /* | |
1521 | * Set last_net_seq_num before the close flag. Required by data | |
1522 | * pending check. | |
1523 | */ | |
7591bab1 | 1524 | pthread_mutex_lock(&stream->lock); |
5312a3ed | 1525 | stream->last_net_seq_num = stream_info.last_net_seq_num; |
77f7bd85 MD |
1526 | pthread_mutex_unlock(&stream->lock); |
1527 | ||
bda7c7b9 JG |
1528 | /* |
1529 | * This is one of the conditions which may trigger a stream close | |
1530 | * with the others being: | |
1531 | * 1) A close command is received for a stream | |
1532 | * 2) The control connection owning the stream is closed | |
1533 | * 3) We have received all of the stream's data _after_ a close | |
1534 | * request. | |
1535 | */ | |
1536 | try_stream_close(stream); | |
7591bab1 MD |
1537 | if (stream->is_metadata) { |
1538 | struct relay_viewer_stream *vstream; | |
173af62f | 1539 | |
7591bab1 MD |
1540 | vstream = viewer_stream_get_by_id(stream->stream_handle); |
1541 | if (vstream) { | |
94f73d08 | 1542 | if (stream->no_new_metadata_notified) { |
7591bab1 MD |
1543 | /* |
1544 | * Since all the metadata has been sent to the | |
1545 | * viewer and that we have a request to close | |
1546 | * its stream, we can safely teardown the | |
1547 | * corresponding metadata viewer stream. | |
1548 | */ | |
1549 | viewer_stream_put(vstream); | |
1550 | } | |
1551 | /* Put local reference. */ | |
1552 | viewer_stream_put(vstream); | |
1553 | } | |
1554 | } | |
7591bab1 | 1555 | stream_put(stream); |
5312a3ed | 1556 | ret = 0; |
173af62f | 1557 | |
7591bab1 | 1558 | end: |
53efb85a | 1559 | memset(&reply, 0, sizeof(reply)); |
173af62f | 1560 | if (ret < 0) { |
f73fabfd | 1561 | reply.ret_code = htobe32(LTTNG_ERR_UNK); |
173af62f | 1562 | } else { |
f73fabfd | 1563 | reply.ret_code = htobe32(LTTNG_OK); |
173af62f | 1564 | } |
58eb9381 | 1565 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
173af62f | 1566 | sizeof(struct lttcomm_relayd_generic_reply), 0); |
5312a3ed JG |
1567 | if (send_ret < (ssize_t) sizeof(reply)) { |
1568 | ERR("Failed to send \"close stream\" command reply (ret = %zd)", | |
1569 | send_ret); | |
1570 | ret = -1; | |
173af62f DG |
1571 | } |
1572 | ||
1573 | end_no_session: | |
1574 | return ret; | |
1575 | } | |
1576 | ||
93ec662e JD |
1577 | /* |
1578 | * relay_reset_metadata: reset a metadata stream | |
1579 | */ | |
1580 | static | |
5312a3ed JG |
1581 | int relay_reset_metadata(const struct lttcomm_relayd_hdr *recv_hdr, |
1582 | struct relay_connection *conn, | |
1583 | const struct lttng_buffer_view *payload) | |
93ec662e | 1584 | { |
5312a3ed JG |
1585 | int ret; |
1586 | ssize_t send_ret; | |
93ec662e JD |
1587 | struct relay_session *session = conn->session; |
1588 | struct lttcomm_relayd_reset_metadata stream_info; | |
1589 | struct lttcomm_relayd_generic_reply reply; | |
1590 | struct relay_stream *stream; | |
1591 | ||
1592 | DBG("Reset metadata received"); | |
1593 | ||
5312a3ed | 1594 | if (!session || !conn->version_check_done) { |
93ec662e JD |
1595 | ERR("Trying to reset a metadata stream before version check"); |
1596 | ret = -1; | |
1597 | goto end_no_session; | |
1598 | } | |
1599 | ||
5312a3ed JG |
1600 | if (payload->size < sizeof(stream_info)) { |
1601 | ERR("Unexpected payload size in \"relay_reset_metadata\": expected >= %zu bytes, got %zu bytes", | |
1602 | sizeof(stream_info), payload->size); | |
93ec662e JD |
1603 | ret = -1; |
1604 | goto end_no_session; | |
1605 | } | |
5312a3ed JG |
1606 | memcpy(&stream_info, payload->data, sizeof(stream_info)); |
1607 | stream_info.stream_id = be64toh(stream_info.stream_id); | |
1608 | stream_info.version = be64toh(stream_info.version); | |
1609 | ||
1610 | DBG("Update metadata to version %" PRIu64, stream_info.version); | |
93ec662e JD |
1611 | |
1612 | /* Unsupported for live sessions for now. */ | |
1613 | if (session->live_timer != 0) { | |
1614 | ret = -1; | |
1615 | goto end; | |
1616 | } | |
1617 | ||
5312a3ed | 1618 | stream = stream_get_by_id(stream_info.stream_id); |
93ec662e JD |
1619 | if (!stream) { |
1620 | ret = -1; | |
1621 | goto end; | |
1622 | } | |
1623 | pthread_mutex_lock(&stream->lock); | |
1624 | if (!stream->is_metadata) { | |
1625 | ret = -1; | |
1626 | goto end_unlock; | |
1627 | } | |
1628 | ||
c35f9726 | 1629 | ret = stream_reset_file(stream); |
93ec662e | 1630 | if (ret < 0) { |
c35f9726 JG |
1631 | ERR("Failed to reset metadata stream %" PRIu64 |
1632 | ": stream_path = %s, channel = %s", | |
1633 | stream->stream_handle, stream->path_name, | |
1634 | stream->channel_name); | |
93ec662e JD |
1635 | goto end_unlock; |
1636 | } | |
93ec662e JD |
1637 | end_unlock: |
1638 | pthread_mutex_unlock(&stream->lock); | |
1639 | stream_put(stream); | |
1640 | ||
1641 | end: | |
1642 | memset(&reply, 0, sizeof(reply)); | |
1643 | if (ret < 0) { | |
1644 | reply.ret_code = htobe32(LTTNG_ERR_UNK); | |
1645 | } else { | |
1646 | reply.ret_code = htobe32(LTTNG_OK); | |
1647 | } | |
1648 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, | |
1649 | sizeof(struct lttcomm_relayd_generic_reply), 0); | |
5312a3ed JG |
1650 | if (send_ret < (ssize_t) sizeof(reply)) { |
1651 | ERR("Failed to send \"reset metadata\" command reply (ret = %zd)", | |
1652 | send_ret); | |
1653 | ret = -1; | |
93ec662e JD |
1654 | } |
1655 | ||
1656 | end_no_session: | |
1657 | return ret; | |
1658 | } | |
1659 | ||
b8aa1682 JD |
1660 | /* |
1661 | * relay_unknown_command: send -1 if received unknown command | |
1662 | */ | |
7591bab1 | 1663 | static void relay_unknown_command(struct relay_connection *conn) |
b8aa1682 JD |
1664 | { |
1665 | struct lttcomm_relayd_generic_reply reply; | |
5312a3ed | 1666 | ssize_t send_ret; |
b8aa1682 | 1667 | |
53efb85a | 1668 | memset(&reply, 0, sizeof(reply)); |
f73fabfd | 1669 | reply.ret_code = htobe32(LTTNG_ERR_UNK); |
5312a3ed JG |
1670 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
1671 | if (send_ret < sizeof(reply)) { | |
1672 | ERR("Failed to send \"unknown command\" command reply (ret = %zd)", send_ret); | |
b8aa1682 JD |
1673 | } |
1674 | } | |
1675 | ||
1676 | /* | |
1677 | * relay_start: send an acknowledgment to the client to tell if we are | |
1678 | * ready to receive data. We are ready if a session is established. | |
1679 | */ | |
5312a3ed JG |
1680 | static int relay_start(const struct lttcomm_relayd_hdr *recv_hdr, |
1681 | struct relay_connection *conn, | |
1682 | const struct lttng_buffer_view *payload) | |
b8aa1682 | 1683 | { |
5312a3ed JG |
1684 | int ret = 0; |
1685 | ssize_t send_ret; | |
b8aa1682 | 1686 | struct lttcomm_relayd_generic_reply reply; |
58eb9381 | 1687 | struct relay_session *session = conn->session; |
b8aa1682 JD |
1688 | |
1689 | if (!session) { | |
1690 | DBG("Trying to start the streaming without a session established"); | |
f73fabfd | 1691 | ret = htobe32(LTTNG_ERR_UNK); |
b8aa1682 JD |
1692 | } |
1693 | ||
53efb85a | 1694 | memset(&reply, 0, sizeof(reply)); |
5312a3ed JG |
1695 | reply.ret_code = htobe32(LTTNG_OK); |
1696 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, | |
1697 | sizeof(reply), 0); | |
1698 | if (send_ret < (ssize_t) sizeof(reply)) { | |
1699 | ERR("Failed to send \"relay_start\" command reply (ret = %zd)", | |
1700 | send_ret); | |
1701 | ret = -1; | |
b8aa1682 JD |
1702 | } |
1703 | ||
1704 | return ret; | |
1705 | } | |
1706 | ||
b8aa1682 | 1707 | /* |
7591bab1 | 1708 | * relay_recv_metadata: receive the metadata for the session. |
b8aa1682 | 1709 | */ |
5312a3ed JG |
1710 | static int relay_recv_metadata(const struct lttcomm_relayd_hdr *recv_hdr, |
1711 | struct relay_connection *conn, | |
1712 | const struct lttng_buffer_view *payload) | |
b8aa1682 | 1713 | { |
32d1569c | 1714 | int ret = 0; |
58eb9381 | 1715 | struct relay_session *session = conn->session; |
5312a3ed | 1716 | struct lttcomm_relayd_metadata_payload metadata_payload_header; |
b8aa1682 | 1717 | struct relay_stream *metadata_stream; |
5312a3ed | 1718 | uint64_t metadata_payload_size; |
c35f9726 | 1719 | struct lttng_buffer_view packet_view; |
b8aa1682 JD |
1720 | |
1721 | if (!session) { | |
1722 | ERR("Metadata sent before version check"); | |
1723 | ret = -1; | |
1724 | goto end; | |
1725 | } | |
1726 | ||
5312a3ed | 1727 | if (recv_hdr->data_size < sizeof(struct lttcomm_relayd_metadata_payload)) { |
f6416125 MD |
1728 | ERR("Incorrect data size"); |
1729 | ret = -1; | |
1730 | goto end; | |
1731 | } | |
5312a3ed JG |
1732 | metadata_payload_size = recv_hdr->data_size - |
1733 | sizeof(struct lttcomm_relayd_metadata_payload); | |
f6416125 | 1734 | |
5312a3ed JG |
1735 | memcpy(&metadata_payload_header, payload->data, |
1736 | sizeof(metadata_payload_header)); | |
1737 | metadata_payload_header.stream_id = be64toh( | |
1738 | metadata_payload_header.stream_id); | |
1739 | metadata_payload_header.padding_size = be32toh( | |
1740 | metadata_payload_header.padding_size); | |
9d1bbf21 | 1741 | |
5312a3ed | 1742 | metadata_stream = stream_get_by_id(metadata_payload_header.stream_id); |
b8aa1682 JD |
1743 | if (!metadata_stream) { |
1744 | ret = -1; | |
7591bab1 | 1745 | goto end; |
b8aa1682 JD |
1746 | } |
1747 | ||
c35f9726 JG |
1748 | packet_view = lttng_buffer_view_from_view(payload, |
1749 | sizeof(metadata_payload_header), metadata_payload_size); | |
1750 | if (!packet_view.data) { | |
1751 | ERR("Invalid metadata packet length announced by header"); | |
b8aa1682 | 1752 | ret = -1; |
7591bab1 | 1753 | goto end_put; |
b8aa1682 | 1754 | } |
1d4dfdef | 1755 | |
c35f9726 JG |
1756 | pthread_mutex_lock(&metadata_stream->lock); |
1757 | ret = stream_write(metadata_stream, &packet_view, | |
5312a3ed | 1758 | metadata_payload_header.padding_size); |
c35f9726 JG |
1759 | pthread_mutex_unlock(&metadata_stream->lock); |
1760 | if (ret){ | |
5312a3ed | 1761 | ret = -1; |
7591bab1 | 1762 | goto end_put; |
1d4dfdef | 1763 | } |
7591bab1 | 1764 | end_put: |
7591bab1 | 1765 | stream_put(metadata_stream); |
b8aa1682 JD |
1766 | end: |
1767 | return ret; | |
1768 | } | |
1769 | ||
1770 | /* | |
1771 | * relay_send_version: send relayd version number | |
1772 | */ | |
5312a3ed JG |
1773 | static int relay_send_version(const struct lttcomm_relayd_hdr *recv_hdr, |
1774 | struct relay_connection *conn, | |
1775 | const struct lttng_buffer_view *payload) | |
b8aa1682 | 1776 | { |
7f51dcba | 1777 | int ret; |
5312a3ed | 1778 | ssize_t send_ret; |
092b6259 | 1779 | struct lttcomm_relayd_version reply, msg; |
87cb6359 | 1780 | bool compatible = true; |
b8aa1682 | 1781 | |
5312a3ed | 1782 | conn->version_check_done = true; |
b8aa1682 | 1783 | |
092b6259 | 1784 | /* Get version from the other side. */ |
5312a3ed JG |
1785 | if (payload->size < sizeof(msg)) { |
1786 | ERR("Unexpected payload size in \"relay_send_version\": expected >= %zu bytes, got %zu bytes", | |
1787 | sizeof(msg), payload->size); | |
092b6259 | 1788 | ret = -1; |
092b6259 DG |
1789 | goto end; |
1790 | } | |
1791 | ||
5312a3ed JG |
1792 | memcpy(&msg, payload->data, sizeof(msg)); |
1793 | msg.major = be32toh(msg.major); | |
1794 | msg.minor = be32toh(msg.minor); | |
1795 | ||
53efb85a | 1796 | memset(&reply, 0, sizeof(reply)); |
d83a952c MD |
1797 | reply.major = RELAYD_VERSION_COMM_MAJOR; |
1798 | reply.minor = RELAYD_VERSION_COMM_MINOR; | |
d4519fa3 JD |
1799 | |
1800 | /* Major versions must be the same */ | |
5312a3ed | 1801 | if (reply.major != msg.major) { |
6151a90f | 1802 | DBG("Incompatible major versions (%u vs %u), deleting session", |
5312a3ed | 1803 | reply.major, msg.major); |
87cb6359 | 1804 | compatible = false; |
d4519fa3 JD |
1805 | } |
1806 | ||
58eb9381 | 1807 | conn->major = reply.major; |
0f907de1 | 1808 | /* We adapt to the lowest compatible version */ |
5312a3ed | 1809 | if (reply.minor <= msg.minor) { |
58eb9381 | 1810 | conn->minor = reply.minor; |
0f907de1 | 1811 | } else { |
5312a3ed | 1812 | conn->minor = msg.minor; |
0f907de1 JD |
1813 | } |
1814 | ||
6151a90f JD |
1815 | reply.major = htobe32(reply.major); |
1816 | reply.minor = htobe32(reply.minor); | |
5312a3ed JG |
1817 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
1818 | sizeof(reply), 0); | |
1819 | if (send_ret < (ssize_t) sizeof(reply)) { | |
1820 | ERR("Failed to send \"send version\" command reply (ret = %zd)", | |
1821 | send_ret); | |
1822 | ret = -1; | |
1823 | goto end; | |
1824 | } else { | |
1825 | ret = 0; | |
6151a90f JD |
1826 | } |
1827 | ||
87cb6359 JD |
1828 | if (!compatible) { |
1829 | ret = -1; | |
1830 | goto end; | |
1831 | } | |
1832 | ||
58eb9381 DG |
1833 | DBG("Version check done using protocol %u.%u", conn->major, |
1834 | conn->minor); | |
b8aa1682 JD |
1835 | |
1836 | end: | |
1837 | return ret; | |
1838 | } | |
1839 | ||
c8f59ee5 | 1840 | /* |
6d805429 | 1841 | * Check for data pending for a given stream id from the session daemon. |
c8f59ee5 | 1842 | */ |
5312a3ed JG |
1843 | static int relay_data_pending(const struct lttcomm_relayd_hdr *recv_hdr, |
1844 | struct relay_connection *conn, | |
1845 | const struct lttng_buffer_view *payload) | |
c8f59ee5 | 1846 | { |
58eb9381 | 1847 | struct relay_session *session = conn->session; |
6d805429 | 1848 | struct lttcomm_relayd_data_pending msg; |
c8f59ee5 DG |
1849 | struct lttcomm_relayd_generic_reply reply; |
1850 | struct relay_stream *stream; | |
5312a3ed | 1851 | ssize_t send_ret; |
c8f59ee5 | 1852 | int ret; |
298a25ca | 1853 | uint64_t stream_seq; |
c8f59ee5 | 1854 | |
6d805429 | 1855 | DBG("Data pending command received"); |
c8f59ee5 | 1856 | |
5312a3ed | 1857 | if (!session || !conn->version_check_done) { |
c8f59ee5 DG |
1858 | ERR("Trying to check for data before version check"); |
1859 | ret = -1; | |
1860 | goto end_no_session; | |
1861 | } | |
1862 | ||
5312a3ed JG |
1863 | if (payload->size < sizeof(msg)) { |
1864 | ERR("Unexpected payload size in \"relay_data_pending\": expected >= %zu bytes, got %zu bytes", | |
1865 | sizeof(msg), payload->size); | |
c8f59ee5 DG |
1866 | ret = -1; |
1867 | goto end_no_session; | |
1868 | } | |
5312a3ed JG |
1869 | memcpy(&msg, payload->data, sizeof(msg)); |
1870 | msg.stream_id = be64toh(msg.stream_id); | |
1871 | msg.last_net_seq_num = be64toh(msg.last_net_seq_num); | |
c8f59ee5 | 1872 | |
5312a3ed | 1873 | stream = stream_get_by_id(msg.stream_id); |
de91f48a | 1874 | if (stream == NULL) { |
c8f59ee5 | 1875 | ret = -1; |
7591bab1 | 1876 | goto end; |
c8f59ee5 DG |
1877 | } |
1878 | ||
7591bab1 MD |
1879 | pthread_mutex_lock(&stream->lock); |
1880 | ||
298a25ca JG |
1881 | if (session_streams_have_index(session)) { |
1882 | /* | |
1883 | * Ensure that both the index and stream data have been | |
1884 | * flushed up to the requested point. | |
1885 | */ | |
a8f9f353 | 1886 | stream_seq = min(stream->prev_data_seq, stream->prev_index_seq); |
298a25ca | 1887 | } else { |
a8f9f353 | 1888 | stream_seq = stream->prev_data_seq; |
298a25ca | 1889 | } |
a8f9f353 | 1890 | DBG("Data pending for stream id %" PRIu64 ": prev_data_seq %" PRIu64 |
298a25ca JG |
1891 | ", prev_index_seq %" PRIu64 |
1892 | ", and last_seq %" PRIu64, msg.stream_id, | |
a8f9f353 | 1893 | stream->prev_data_seq, stream->prev_index_seq, |
298a25ca | 1894 | msg.last_net_seq_num); |
c8f59ee5 | 1895 | |
33832e64 | 1896 | /* Avoid wrapping issue */ |
298a25ca | 1897 | if (((int64_t) (stream_seq - msg.last_net_seq_num)) >= 0) { |
6d805429 | 1898 | /* Data has in fact been written and is NOT pending */ |
c8f59ee5 | 1899 | ret = 0; |
6d805429 DG |
1900 | } else { |
1901 | /* Data still being streamed thus pending */ | |
1902 | ret = 1; | |
c8f59ee5 DG |
1903 | } |
1904 | ||
7591bab1 MD |
1905 | stream->data_pending_check_done = true; |
1906 | pthread_mutex_unlock(&stream->lock); | |
f7079f67 | 1907 | |
7591bab1 MD |
1908 | stream_put(stream); |
1909 | end: | |
c8f59ee5 | 1910 | |
53efb85a | 1911 | memset(&reply, 0, sizeof(reply)); |
c8f59ee5 | 1912 | reply.ret_code = htobe32(ret); |
5312a3ed JG |
1913 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
1914 | if (send_ret < (ssize_t) sizeof(reply)) { | |
1915 | ERR("Failed to send \"data pending\" command reply (ret = %zd)", | |
1916 | send_ret); | |
1917 | ret = -1; | |
c8f59ee5 DG |
1918 | } |
1919 | ||
1920 | end_no_session: | |
1921 | return ret; | |
1922 | } | |
1923 | ||
1924 | /* | |
1925 | * Wait for the control socket to reach a quiescent state. | |
1926 | * | |
7591bab1 MD |
1927 | * Note that for now, when receiving this command from the session |
1928 | * daemon, this means that every subsequent commands or data received on | |
1929 | * the control socket has been handled. So, this is why we simply return | |
1930 | * OK here. | |
c8f59ee5 | 1931 | */ |
5312a3ed JG |
1932 | static int relay_quiescent_control(const struct lttcomm_relayd_hdr *recv_hdr, |
1933 | struct relay_connection *conn, | |
1934 | const struct lttng_buffer_view *payload) | |
c8f59ee5 DG |
1935 | { |
1936 | int ret; | |
5312a3ed | 1937 | ssize_t send_ret; |
ad7051c0 | 1938 | struct relay_stream *stream; |
ad7051c0 | 1939 | struct lttcomm_relayd_quiescent_control msg; |
c8f59ee5 DG |
1940 | struct lttcomm_relayd_generic_reply reply; |
1941 | ||
1942 | DBG("Checking quiescent state on control socket"); | |
1943 | ||
5312a3ed | 1944 | if (!conn->session || !conn->version_check_done) { |
ad7051c0 DG |
1945 | ERR("Trying to check for data before version check"); |
1946 | ret = -1; | |
1947 | goto end_no_session; | |
1948 | } | |
1949 | ||
5312a3ed JG |
1950 | if (payload->size < sizeof(msg)) { |
1951 | ERR("Unexpected payload size in \"relay_quiescent_control\": expected >= %zu bytes, got %zu bytes", | |
1952 | sizeof(msg), payload->size); | |
ad7051c0 DG |
1953 | ret = -1; |
1954 | goto end_no_session; | |
1955 | } | |
5312a3ed JG |
1956 | memcpy(&msg, payload->data, sizeof(msg)); |
1957 | msg.stream_id = be64toh(msg.stream_id); | |
ad7051c0 | 1958 | |
5312a3ed | 1959 | stream = stream_get_by_id(msg.stream_id); |
7591bab1 MD |
1960 | if (!stream) { |
1961 | goto reply; | |
1962 | } | |
1963 | pthread_mutex_lock(&stream->lock); | |
1964 | stream->data_pending_check_done = true; | |
1965 | pthread_mutex_unlock(&stream->lock); | |
5312a3ed JG |
1966 | |
1967 | DBG("Relay quiescent control pending flag set to %" PRIu64, msg.stream_id); | |
7591bab1 MD |
1968 | stream_put(stream); |
1969 | reply: | |
53efb85a | 1970 | memset(&reply, 0, sizeof(reply)); |
c8f59ee5 | 1971 | reply.ret_code = htobe32(LTTNG_OK); |
5312a3ed JG |
1972 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
1973 | if (send_ret < (ssize_t) sizeof(reply)) { | |
1974 | ERR("Failed to send \"quiescent control\" command reply (ret = %zd)", | |
1975 | send_ret); | |
1976 | ret = -1; | |
1977 | } else { | |
1978 | ret = 0; | |
c8f59ee5 DG |
1979 | } |
1980 | ||
ad7051c0 | 1981 | end_no_session: |
c8f59ee5 DG |
1982 | return ret; |
1983 | } | |
1984 | ||
f7079f67 | 1985 | /* |
7591bab1 MD |
1986 | * Initialize a data pending command. This means that a consumer is about |
1987 | * to ask for data pending for each stream it holds. Simply iterate over | |
1988 | * all streams of a session and set the data_pending_check_done flag. | |
f7079f67 DG |
1989 | * |
1990 | * This command returns to the client a LTTNG_OK code. | |
1991 | */ | |
5312a3ed JG |
1992 | static int relay_begin_data_pending(const struct lttcomm_relayd_hdr *recv_hdr, |
1993 | struct relay_connection *conn, | |
1994 | const struct lttng_buffer_view *payload) | |
f7079f67 DG |
1995 | { |
1996 | int ret; | |
5312a3ed | 1997 | ssize_t send_ret; |
f7079f67 DG |
1998 | struct lttng_ht_iter iter; |
1999 | struct lttcomm_relayd_begin_data_pending msg; | |
2000 | struct lttcomm_relayd_generic_reply reply; | |
2001 | struct relay_stream *stream; | |
f7079f67 DG |
2002 | |
2003 | assert(recv_hdr); | |
58eb9381 | 2004 | assert(conn); |
f7079f67 DG |
2005 | |
2006 | DBG("Init streams for data pending"); | |
2007 | ||
5312a3ed | 2008 | if (!conn->session || !conn->version_check_done) { |
f7079f67 DG |
2009 | ERR("Trying to check for data before version check"); |
2010 | ret = -1; | |
2011 | goto end_no_session; | |
2012 | } | |
2013 | ||
5312a3ed JG |
2014 | if (payload->size < sizeof(msg)) { |
2015 | ERR("Unexpected payload size in \"relay_begin_data_pending\": expected >= %zu bytes, got %zu bytes", | |
2016 | sizeof(msg), payload->size); | |
f7079f67 DG |
2017 | ret = -1; |
2018 | goto end_no_session; | |
2019 | } | |
5312a3ed JG |
2020 | memcpy(&msg, payload->data, sizeof(msg)); |
2021 | msg.session_id = be64toh(msg.session_id); | |
f7079f67 DG |
2022 | |
2023 | /* | |
7591bab1 MD |
2024 | * Iterate over all streams to set the begin data pending flag. |
2025 | * For now, the streams are indexed by stream handle so we have | |
2026 | * to iterate over all streams to find the one associated with | |
2027 | * the right session_id. | |
f7079f67 DG |
2028 | */ |
2029 | rcu_read_lock(); | |
d3e2ba59 | 2030 | cds_lfht_for_each_entry(relay_streams_ht->ht, &iter.iter, stream, |
2a174661 | 2031 | node.node) { |
7591bab1 MD |
2032 | if (!stream_get(stream)) { |
2033 | continue; | |
2034 | } | |
5312a3ed | 2035 | if (stream->trace->session->id == msg.session_id) { |
7591bab1 MD |
2036 | pthread_mutex_lock(&stream->lock); |
2037 | stream->data_pending_check_done = false; | |
2038 | pthread_mutex_unlock(&stream->lock); | |
f7079f67 DG |
2039 | DBG("Set begin data pending flag to stream %" PRIu64, |
2040 | stream->stream_handle); | |
2041 | } | |
7591bab1 | 2042 | stream_put(stream); |
f7079f67 DG |
2043 | } |
2044 | rcu_read_unlock(); | |
2045 | ||
53efb85a | 2046 | memset(&reply, 0, sizeof(reply)); |
f7079f67 DG |
2047 | /* All good, send back reply. */ |
2048 | reply.ret_code = htobe32(LTTNG_OK); | |
2049 | ||
5312a3ed JG |
2050 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
2051 | if (send_ret < (ssize_t) sizeof(reply)) { | |
2052 | ERR("Failed to send \"begin data pending\" command reply (ret = %zd)", | |
2053 | send_ret); | |
2054 | ret = -1; | |
2055 | } else { | |
2056 | ret = 0; | |
f7079f67 DG |
2057 | } |
2058 | ||
2059 | end_no_session: | |
2060 | return ret; | |
2061 | } | |
2062 | ||
2063 | /* | |
7591bab1 MD |
2064 | * End data pending command. This will check, for a given session id, if |
2065 | * each stream associated with it has its data_pending_check_done flag | |
2066 | * set. If not, this means that the client lost track of the stream but | |
2067 | * the data is still being streamed on our side. In this case, we inform | |
2068 | * the client that data is in flight. | |
f7079f67 DG |
2069 | * |
2070 | * Return to the client if there is data in flight or not with a ret_code. | |
2071 | */ | |
5312a3ed JG |
2072 | static int relay_end_data_pending(const struct lttcomm_relayd_hdr *recv_hdr, |
2073 | struct relay_connection *conn, | |
2074 | const struct lttng_buffer_view *payload) | |
f7079f67 DG |
2075 | { |
2076 | int ret; | |
5312a3ed | 2077 | ssize_t send_ret; |
f7079f67 DG |
2078 | struct lttng_ht_iter iter; |
2079 | struct lttcomm_relayd_end_data_pending msg; | |
2080 | struct lttcomm_relayd_generic_reply reply; | |
2081 | struct relay_stream *stream; | |
f7079f67 DG |
2082 | uint32_t is_data_inflight = 0; |
2083 | ||
f7079f67 DG |
2084 | DBG("End data pending command"); |
2085 | ||
5312a3ed | 2086 | if (!conn->session || !conn->version_check_done) { |
f7079f67 DG |
2087 | ERR("Trying to check for data before version check"); |
2088 | ret = -1; | |
2089 | goto end_no_session; | |
2090 | } | |
2091 | ||
5312a3ed JG |
2092 | if (payload->size < sizeof(msg)) { |
2093 | ERR("Unexpected payload size in \"relay_end_data_pending\": expected >= %zu bytes, got %zu bytes", | |
2094 | sizeof(msg), payload->size); | |
f7079f67 DG |
2095 | ret = -1; |
2096 | goto end_no_session; | |
2097 | } | |
5312a3ed JG |
2098 | memcpy(&msg, payload->data, sizeof(msg)); |
2099 | msg.session_id = be64toh(msg.session_id); | |
f7079f67 | 2100 | |
7591bab1 MD |
2101 | /* |
2102 | * Iterate over all streams to see if the begin data pending | |
2103 | * flag is set. | |
2104 | */ | |
f7079f67 | 2105 | rcu_read_lock(); |
d3e2ba59 | 2106 | cds_lfht_for_each_entry(relay_streams_ht->ht, &iter.iter, stream, |
2a174661 | 2107 | node.node) { |
7591bab1 MD |
2108 | if (!stream_get(stream)) { |
2109 | continue; | |
2110 | } | |
5312a3ed | 2111 | if (stream->trace->session->id != msg.session_id) { |
7591bab1 MD |
2112 | stream_put(stream); |
2113 | continue; | |
2114 | } | |
2115 | pthread_mutex_lock(&stream->lock); | |
2116 | if (!stream->data_pending_check_done) { | |
298a25ca JG |
2117 | uint64_t stream_seq; |
2118 | ||
2119 | if (session_streams_have_index(conn->session)) { | |
2120 | /* | |
2121 | * Ensure that both the index and stream data have been | |
2122 | * flushed up to the requested point. | |
2123 | */ | |
a8f9f353 | 2124 | stream_seq = min(stream->prev_data_seq, stream->prev_index_seq); |
298a25ca | 2125 | } else { |
a8f9f353 | 2126 | stream_seq = stream->prev_data_seq; |
298a25ca JG |
2127 | } |
2128 | if (!stream->closed || !(((int64_t) (stream_seq - stream->last_net_seq_num)) >= 0)) { | |
7591bab1 MD |
2129 | is_data_inflight = 1; |
2130 | DBG("Data is still in flight for stream %" PRIu64, | |
2131 | stream->stream_handle); | |
2132 | pthread_mutex_unlock(&stream->lock); | |
2133 | stream_put(stream); | |
2134 | break; | |
2135 | } | |
f7079f67 | 2136 | } |
7591bab1 MD |
2137 | pthread_mutex_unlock(&stream->lock); |
2138 | stream_put(stream); | |
f7079f67 DG |
2139 | } |
2140 | rcu_read_unlock(); | |
2141 | ||
53efb85a | 2142 | memset(&reply, 0, sizeof(reply)); |
f7079f67 DG |
2143 | /* All good, send back reply. */ |
2144 | reply.ret_code = htobe32(is_data_inflight); | |
2145 | ||
5312a3ed JG |
2146 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
2147 | if (send_ret < (ssize_t) sizeof(reply)) { | |
2148 | ERR("Failed to send \"end data pending\" command reply (ret = %zd)", | |
2149 | send_ret); | |
2150 | ret = -1; | |
2151 | } else { | |
2152 | ret = 0; | |
f7079f67 DG |
2153 | } |
2154 | ||
2155 | end_no_session: | |
2156 | return ret; | |
2157 | } | |
2158 | ||
1c20f0e2 JD |
2159 | /* |
2160 | * Receive an index for a specific stream. | |
2161 | * | |
2162 | * Return 0 on success else a negative value. | |
2163 | */ | |
5312a3ed JG |
2164 | static int relay_recv_index(const struct lttcomm_relayd_hdr *recv_hdr, |
2165 | struct relay_connection *conn, | |
2166 | const struct lttng_buffer_view *payload) | |
1c20f0e2 | 2167 | { |
5312a3ed JG |
2168 | int ret; |
2169 | ssize_t send_ret; | |
58eb9381 | 2170 | struct relay_session *session = conn->session; |
1c20f0e2 | 2171 | struct lttcomm_relayd_index index_info; |
1c20f0e2 JD |
2172 | struct lttcomm_relayd_generic_reply reply; |
2173 | struct relay_stream *stream; | |
f8f3885c | 2174 | size_t msg_len; |
1c20f0e2 | 2175 | |
58eb9381 | 2176 | assert(conn); |
1c20f0e2 JD |
2177 | |
2178 | DBG("Relay receiving index"); | |
2179 | ||
5312a3ed | 2180 | if (!session || !conn->version_check_done) { |
1c20f0e2 JD |
2181 | ERR("Trying to close a stream before version check"); |
2182 | ret = -1; | |
2183 | goto end_no_session; | |
2184 | } | |
2185 | ||
f8f3885c MD |
2186 | msg_len = lttcomm_relayd_index_len( |
2187 | lttng_to_index_major(conn->major, conn->minor), | |
2188 | lttng_to_index_minor(conn->major, conn->minor)); | |
5312a3ed JG |
2189 | if (payload->size < msg_len) { |
2190 | ERR("Unexpected payload size in \"relay_recv_index\": expected >= %zu bytes, got %zu bytes", | |
2191 | msg_len, payload->size); | |
1c20f0e2 JD |
2192 | ret = -1; |
2193 | goto end_no_session; | |
2194 | } | |
5312a3ed JG |
2195 | memcpy(&index_info, payload->data, msg_len); |
2196 | index_info.relay_stream_id = be64toh(index_info.relay_stream_id); | |
2197 | index_info.net_seq_num = be64toh(index_info.net_seq_num); | |
2198 | index_info.packet_size = be64toh(index_info.packet_size); | |
2199 | index_info.content_size = be64toh(index_info.content_size); | |
2200 | index_info.timestamp_begin = be64toh(index_info.timestamp_begin); | |
2201 | index_info.timestamp_end = be64toh(index_info.timestamp_end); | |
2202 | index_info.events_discarded = be64toh(index_info.events_discarded); | |
2203 | index_info.stream_id = be64toh(index_info.stream_id); | |
81df238b JR |
2204 | |
2205 | if (conn->minor >= 8) { | |
2206 | index_info.stream_instance_id = | |
2207 | be64toh(index_info.stream_instance_id); | |
2208 | index_info.packet_seq_num = be64toh(index_info.packet_seq_num); | |
0f83d1cc MD |
2209 | } else { |
2210 | index_info.stream_instance_id = -1ULL; | |
2211 | index_info.packet_seq_num = -1ULL; | |
81df238b | 2212 | } |
5312a3ed JG |
2213 | |
2214 | stream = stream_get_by_id(index_info.relay_stream_id); | |
1c20f0e2 | 2215 | if (!stream) { |
7591bab1 | 2216 | ERR("stream_get_by_id not found"); |
1c20f0e2 | 2217 | ret = -1; |
7591bab1 | 2218 | goto end; |
1c20f0e2 | 2219 | } |
d3e2ba59 | 2220 | |
c35f9726 JG |
2221 | pthread_mutex_lock(&stream->lock); |
2222 | ret = stream_add_index(stream, &index_info); | |
2223 | pthread_mutex_unlock(&stream->lock); | |
2224 | if (ret) { | |
7591bab1 MD |
2225 | goto end_stream_put; |
2226 | } | |
1c20f0e2 | 2227 | |
7591bab1 | 2228 | end_stream_put: |
7591bab1 | 2229 | stream_put(stream); |
7591bab1 | 2230 | end: |
53efb85a | 2231 | memset(&reply, 0, sizeof(reply)); |
1c20f0e2 JD |
2232 | if (ret < 0) { |
2233 | reply.ret_code = htobe32(LTTNG_ERR_UNK); | |
2234 | } else { | |
2235 | reply.ret_code = htobe32(LTTNG_OK); | |
2236 | } | |
58eb9381 | 2237 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
5312a3ed JG |
2238 | if (send_ret < (ssize_t) sizeof(reply)) { |
2239 | ERR("Failed to send \"recv index\" command reply (ret = %zd)", send_ret); | |
2240 | ret = -1; | |
1c20f0e2 JD |
2241 | } |
2242 | ||
2243 | end_no_session: | |
2244 | return ret; | |
2245 | } | |
2246 | ||
a4baae1b JD |
2247 | /* |
2248 | * Receive the streams_sent message. | |
2249 | * | |
2250 | * Return 0 on success else a negative value. | |
2251 | */ | |
5312a3ed JG |
2252 | static int relay_streams_sent(const struct lttcomm_relayd_hdr *recv_hdr, |
2253 | struct relay_connection *conn, | |
2254 | const struct lttng_buffer_view *payload) | |
a4baae1b | 2255 | { |
5312a3ed JG |
2256 | int ret; |
2257 | ssize_t send_ret; | |
a4baae1b JD |
2258 | struct lttcomm_relayd_generic_reply reply; |
2259 | ||
58eb9381 | 2260 | assert(conn); |
a4baae1b JD |
2261 | |
2262 | DBG("Relay receiving streams_sent"); | |
2263 | ||
5312a3ed | 2264 | if (!conn->session || !conn->version_check_done) { |
a4baae1b JD |
2265 | ERR("Trying to close a stream before version check"); |
2266 | ret = -1; | |
2267 | goto end_no_session; | |
2268 | } | |
2269 | ||
2270 | /* | |
7591bab1 MD |
2271 | * Publish every pending stream in the connection recv list which are |
2272 | * now ready to be used by the viewer. | |
4a9daf17 | 2273 | */ |
7591bab1 | 2274 | publish_connection_local_streams(conn); |
4a9daf17 | 2275 | |
53efb85a | 2276 | memset(&reply, 0, sizeof(reply)); |
a4baae1b | 2277 | reply.ret_code = htobe32(LTTNG_OK); |
58eb9381 | 2278 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, sizeof(reply), 0); |
5312a3ed JG |
2279 | if (send_ret < (ssize_t) sizeof(reply)) { |
2280 | ERR("Failed to send \"streams sent\" command reply (ret = %zd)", | |
2281 | send_ret); | |
2282 | ret = -1; | |
a4baae1b JD |
2283 | } else { |
2284 | /* Success. */ | |
2285 | ret = 0; | |
2286 | } | |
2287 | ||
2288 | end_no_session: | |
2289 | return ret; | |
2290 | } | |
2291 | ||
d3ecc550 | 2292 | /* |
c35f9726 JG |
2293 | * relay_rotate_session_stream: rotate a stream to a new tracefile for the |
2294 | * session rotation feature (not the tracefile rotation feature). | |
d3ecc550 | 2295 | */ |
c35f9726 JG |
2296 | static int relay_rotate_session_streams( |
2297 | const struct lttcomm_relayd_hdr *recv_hdr, | |
5312a3ed JG |
2298 | struct relay_connection *conn, |
2299 | const struct lttng_buffer_view *payload) | |
d3ecc550 | 2300 | { |
30b9d5ab | 2301 | int ret = 0; |
c35f9726 | 2302 | uint32_t i; |
5312a3ed | 2303 | ssize_t send_ret; |
c35f9726 | 2304 | enum lttng_error_code reply_code = LTTNG_ERR_UNK; |
d3ecc550 | 2305 | struct relay_session *session = conn->session; |
c35f9726 JG |
2306 | struct lttcomm_relayd_rotate_streams rotate_streams; |
2307 | struct lttcomm_relayd_generic_reply reply = {}; | |
2308 | struct relay_stream *stream = NULL; | |
2309 | const size_t header_len = sizeof(struct lttcomm_relayd_rotate_streams); | |
2310 | struct lttng_trace_chunk *next_trace_chunk = NULL; | |
2311 | struct lttng_buffer_view stream_positions; | |
70626904 JG |
2312 | char chunk_id_buf[MAX_INT_DEC_LEN(uint64_t)]; |
2313 | const char *chunk_id_str = "none"; | |
d3ecc550 | 2314 | |
d3ecc550 JD |
2315 | if (!session || !conn->version_check_done) { |
2316 | ERR("Trying to rotate a stream before version check"); | |
2317 | ret = -1; | |
2318 | goto end_no_reply; | |
2319 | } | |
2320 | ||
2321 | if (session->major == 2 && session->minor < 11) { | |
2322 | ERR("Unsupported feature before 2.11"); | |
2323 | ret = -1; | |
2324 | goto end_no_reply; | |
2325 | } | |
2326 | ||
5312a3ed JG |
2327 | if (payload->size < header_len) { |
2328 | ERR("Unexpected payload size in \"relay_rotate_session_stream\": expected >= %zu bytes, got %zu bytes", | |
2329 | header_len, payload->size); | |
d3ecc550 JD |
2330 | ret = -1; |
2331 | goto end_no_reply; | |
2332 | } | |
2333 | ||
c35f9726 | 2334 | memcpy(&rotate_streams, payload->data, header_len); |
5312a3ed | 2335 | |
c35f9726 JG |
2336 | /* Convert header to host endianness. */ |
2337 | rotate_streams = (typeof(rotate_streams)) { | |
2338 | .stream_count = be32toh(rotate_streams.stream_count), | |
2339 | .new_chunk_id = (typeof(rotate_streams.new_chunk_id)) { | |
2340 | .is_set = !!rotate_streams.new_chunk_id.is_set, | |
2341 | .value = be64toh(rotate_streams.new_chunk_id.value), | |
2342 | } | |
2343 | }; | |
d3ecc550 | 2344 | |
c35f9726 JG |
2345 | if (rotate_streams.new_chunk_id.is_set) { |
2346 | /* | |
2347 | * Retrieve the trace chunk the stream must transition to. As | |
2348 | * per the protocol, this chunk should have been created | |
2349 | * before this command is received. | |
2350 | */ | |
2351 | next_trace_chunk = sessiond_trace_chunk_registry_get_chunk( | |
2352 | sessiond_trace_chunk_registry, | |
2353 | session->sessiond_uuid, session->id, | |
2354 | rotate_streams.new_chunk_id.value); | |
2355 | if (!next_trace_chunk) { | |
c70636a7 | 2356 | char uuid_str[LTTNG_UUID_STR_LEN]; |
c35f9726 JG |
2357 | |
2358 | lttng_uuid_to_str(session->sessiond_uuid, uuid_str); | |
2359 | ERR("Unknown next trace chunk in ROTATE_STREAMS command: sessiond_uuid = {%s}, session_id = %" PRIu64 | |
2360 | ", trace_chunk_id = %" PRIu64, | |
2361 | uuid_str, session->id, | |
2362 | rotate_streams.new_chunk_id.value); | |
2363 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
2364 | ret = -1; | |
2365 | goto end; | |
2366 | } | |
70626904 JG |
2367 | |
2368 | ret = snprintf(chunk_id_buf, sizeof(chunk_id_buf), "%" PRIu64, | |
2369 | rotate_streams.new_chunk_id.value); | |
2370 | if (ret < 0 || ret >= sizeof(chunk_id_buf)) { | |
2371 | chunk_id_str = "formatting error"; | |
2372 | } else { | |
2373 | chunk_id_str = chunk_id_buf; | |
2374 | } | |
ecd1a12f | 2375 | session->has_rotated = true; |
d3ecc550 JD |
2376 | } |
2377 | ||
70626904 JG |
2378 | DBG("Rotate %" PRIu32 " streams of session \"%s\" to chunk \"%s\"", |
2379 | rotate_streams.stream_count, session->session_name, | |
2380 | chunk_id_str); | |
2381 | ||
c35f9726 JG |
2382 | stream_positions = lttng_buffer_view_from_view(payload, |
2383 | sizeof(rotate_streams), -1); | |
2384 | if (!stream_positions.data || | |
2385 | stream_positions.size < | |
2386 | (rotate_streams.stream_count * | |
2387 | sizeof(struct lttcomm_relayd_stream_rotation_position))) { | |
2388 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
d3ecc550 | 2389 | ret = -1; |
5312a3ed | 2390 | goto end; |
d3ecc550 JD |
2391 | } |
2392 | ||
c35f9726 JG |
2393 | for (i = 0; i < rotate_streams.stream_count; i++) { |
2394 | struct lttcomm_relayd_stream_rotation_position *position_comm = | |
2395 | &((typeof(position_comm)) stream_positions.data)[i]; | |
2396 | const struct lttcomm_relayd_stream_rotation_position pos = { | |
2397 | .stream_id = be64toh(position_comm->stream_id), | |
2398 | .rotate_at_seq_num = be64toh( | |
2399 | position_comm->rotate_at_seq_num), | |
2400 | }; | |
5312a3ed | 2401 | |
c35f9726 JG |
2402 | stream = stream_get_by_id(pos.stream_id); |
2403 | if (!stream) { | |
2404 | reply_code = LTTNG_ERR_INVALID; | |
2405 | ret = -1; | |
2406 | goto end; | |
c6db3843 JG |
2407 | } |
2408 | ||
c35f9726 JG |
2409 | pthread_mutex_lock(&stream->lock); |
2410 | ret = stream_set_pending_rotation(stream, next_trace_chunk, | |
2411 | pos.rotate_at_seq_num); | |
2412 | pthread_mutex_unlock(&stream->lock); | |
2413 | if (ret) { | |
2414 | reply_code = LTTNG_ERR_FILE_CREATION_ERROR; | |
2415 | goto end; | |
c6db3843 | 2416 | } |
c35f9726 JG |
2417 | |
2418 | stream_put(stream); | |
2419 | stream = NULL; | |
d3ecc550 JD |
2420 | } |
2421 | ||
c35f9726 | 2422 | reply_code = LTTNG_OK; |
eaeb64a9 | 2423 | ret = 0; |
d3ecc550 | 2424 | end: |
c35f9726 JG |
2425 | if (stream) { |
2426 | stream_put(stream); | |
d3ecc550 | 2427 | } |
c35f9726 JG |
2428 | |
2429 | reply.ret_code = htobe32((uint32_t) reply_code); | |
d3ecc550 JD |
2430 | send_ret = conn->sock->ops->sendmsg(conn->sock, &reply, |
2431 | sizeof(struct lttcomm_relayd_generic_reply), 0); | |
5312a3ed JG |
2432 | if (send_ret < (ssize_t) sizeof(reply)) { |
2433 | ERR("Failed to send \"rotate session stream\" command reply (ret = %zd)", | |
2434 | send_ret); | |
2435 | ret = -1; | |
d3ecc550 | 2436 | } |
d3ecc550 | 2437 | end_no_reply: |
c35f9726 | 2438 | lttng_trace_chunk_put(next_trace_chunk); |
d3ecc550 JD |
2439 | return ret; |
2440 | } | |
2441 | ||
e5add6d0 | 2442 | |
e5add6d0 JG |
2443 | |
2444 | /* | |
2445 | * relay_create_trace_chunk: create a new trace chunk | |
2446 | */ | |
2447 | static int relay_create_trace_chunk(const struct lttcomm_relayd_hdr *recv_hdr, | |
2448 | struct relay_connection *conn, | |
2449 | const struct lttng_buffer_view *payload) | |
2450 | { | |
2451 | int ret = 0; | |
2452 | ssize_t send_ret; | |
2453 | struct relay_session *session = conn->session; | |
2454 | struct lttcomm_relayd_create_trace_chunk *msg; | |
2455 | struct lttcomm_relayd_generic_reply reply = {}; | |
2456 | struct lttng_buffer_view header_view; | |
2457 | struct lttng_buffer_view chunk_name_view; | |
2458 | struct lttng_trace_chunk *chunk = NULL, *published_chunk = NULL; | |
2459 | enum lttng_error_code reply_code = LTTNG_OK; | |
2460 | enum lttng_trace_chunk_status chunk_status; | |
cbf53d23 | 2461 | struct lttng_directory_handle *session_output = NULL; |
e5add6d0 JG |
2462 | |
2463 | if (!session || !conn->version_check_done) { | |
2464 | ERR("Trying to create a trace chunk before version check"); | |
2465 | ret = -1; | |
2466 | goto end_no_reply; | |
2467 | } | |
2468 | ||
2469 | if (session->major == 2 && session->minor < 11) { | |
2470 | ERR("Chunk creation command is unsupported before 2.11"); | |
2471 | ret = -1; | |
2472 | goto end_no_reply; | |
2473 | } | |
2474 | ||
2475 | header_view = lttng_buffer_view_from_view(payload, 0, sizeof(*msg)); | |
2476 | if (!header_view.data) { | |
2477 | ERR("Failed to receive payload of chunk creation command"); | |
2478 | ret = -1; | |
2479 | goto end_no_reply; | |
2480 | } | |
2481 | ||
2482 | /* Convert to host endianness. */ | |
2483 | msg = (typeof(msg)) header_view.data; | |
2484 | msg->chunk_id = be64toh(msg->chunk_id); | |
2485 | msg->creation_timestamp = be64toh(msg->creation_timestamp); | |
2486 | msg->override_name_length = be32toh(msg->override_name_length); | |
2487 | ||
2488 | chunk = lttng_trace_chunk_create( | |
2489 | msg->chunk_id, msg->creation_timestamp); | |
2490 | if (!chunk) { | |
2491 | ERR("Failed to create trace chunk in trace chunk creation command"); | |
2492 | ret = -1; | |
2493 | reply_code = LTTNG_ERR_NOMEM; | |
2494 | goto end; | |
2495 | } | |
2496 | ||
2497 | if (msg->override_name_length) { | |
2498 | const char *name; | |
2499 | ||
2500 | chunk_name_view = lttng_buffer_view_from_view(payload, | |
2501 | sizeof(*msg), | |
2502 | msg->override_name_length); | |
2503 | name = chunk_name_view.data; | |
2504 | if (!name || name[msg->override_name_length - 1]) { | |
2505 | ERR("Failed to receive payload of chunk creation command"); | |
2506 | ret = -1; | |
2507 | reply_code = LTTNG_ERR_INVALID; | |
2508 | goto end; | |
2509 | } | |
2510 | ||
2511 | chunk_status = lttng_trace_chunk_override_name( | |
2512 | chunk, chunk_name_view.data); | |
2513 | switch (chunk_status) { | |
2514 | case LTTNG_TRACE_CHUNK_STATUS_OK: | |
2515 | break; | |
2516 | case LTTNG_TRACE_CHUNK_STATUS_INVALID_ARGUMENT: | |
2517 | ERR("Failed to set the name of new trace chunk in trace chunk creation command (invalid name)"); | |
2518 | reply_code = LTTNG_ERR_INVALID; | |
2519 | ret = -1; | |
2520 | goto end; | |
2521 | default: | |
2522 | ERR("Failed to set the name of new trace chunk in trace chunk creation command (unknown error)"); | |
2523 | reply_code = LTTNG_ERR_UNK; | |
2524 | ret = -1; | |
2525 | goto end; | |
2526 | } | |
2527 | } | |
2528 | ||
e5add6d0 JG |
2529 | chunk_status = lttng_trace_chunk_set_credentials_current_user(chunk); |
2530 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2531 | reply_code = LTTNG_ERR_UNK; | |
2532 | ret = -1; | |
2533 | goto end; | |
2534 | } | |
2535 | ||
cbf53d23 JG |
2536 | session_output = session_create_output_directory_handle( |
2537 | conn->session); | |
2538 | if (!session_output) { | |
0ccc0411 JG |
2539 | reply_code = LTTNG_ERR_CREATE_DIR_FAIL; |
2540 | goto end; | |
2541 | } | |
cbf53d23 JG |
2542 | chunk_status = lttng_trace_chunk_set_as_owner(chunk, session_output); |
2543 | lttng_directory_handle_put(session_output); | |
2544 | session_output = NULL; | |
e5add6d0 JG |
2545 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
2546 | reply_code = LTTNG_ERR_UNK; | |
2547 | ret = -1; | |
2548 | goto end; | |
2549 | } | |
2550 | ||
2551 | published_chunk = sessiond_trace_chunk_registry_publish_chunk( | |
2552 | sessiond_trace_chunk_registry, | |
2553 | conn->session->sessiond_uuid, | |
2554 | conn->session->id, | |
2555 | chunk); | |
2556 | if (!published_chunk) { | |
c70636a7 | 2557 | char uuid_str[LTTNG_UUID_STR_LEN]; |
e5add6d0 JG |
2558 | |
2559 | lttng_uuid_to_str(conn->session->sessiond_uuid, uuid_str); | |
2560 | ERR("Failed to publish chunk: sessiond_uuid = %s, session_id = %" PRIu64 ", chunk_id = %" PRIu64, | |
2561 | uuid_str, | |
2562 | conn->session->id, | |
2563 | msg->chunk_id); | |
2564 | ret = -1; | |
2565 | reply_code = LTTNG_ERR_NOMEM; | |
2566 | goto end; | |
2567 | } | |
2568 | ||
2569 | pthread_mutex_lock(&conn->session->lock); | |
62bad3bf JG |
2570 | if (conn->session->pending_closure_trace_chunk) { |
2571 | /* | |
2572 | * Invalid; this means a second create_trace_chunk command was | |
2573 | * received before a close_trace_chunk. | |
2574 | */ | |
2575 | ERR("Invalid trace chunk close command received; a trace chunk is already waiting for a trace chunk close command"); | |
2576 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
2577 | ret = -1; | |
2578 | goto end_unlock_session; | |
2579 | } | |
2580 | conn->session->pending_closure_trace_chunk = | |
2581 | conn->session->current_trace_chunk; | |
e5add6d0 | 2582 | conn->session->current_trace_chunk = published_chunk; |
e5add6d0 | 2583 | published_chunk = NULL; |
62bad3bf | 2584 | end_unlock_session: |
c35f9726 | 2585 | pthread_mutex_unlock(&conn->session->lock); |
e5add6d0 JG |
2586 | end: |
2587 | reply.ret_code = htobe32((uint32_t) reply_code); | |
2588 | send_ret = conn->sock->ops->sendmsg(conn->sock, | |
2589 | &reply, | |
2590 | sizeof(struct lttcomm_relayd_generic_reply), | |
2591 | 0); | |
2592 | if (send_ret < (ssize_t) sizeof(reply)) { | |
2593 | ERR("Failed to send \"create trace chunk\" command reply (ret = %zd)", | |
2594 | send_ret); | |
2595 | ret = -1; | |
2596 | } | |
2597 | end_no_reply: | |
2598 | lttng_trace_chunk_put(chunk); | |
2599 | lttng_trace_chunk_put(published_chunk); | |
cbf53d23 | 2600 | lttng_directory_handle_put(session_output); |
e5add6d0 JG |
2601 | return ret; |
2602 | } | |
2603 | ||
bbc4768c JG |
2604 | /* |
2605 | * relay_close_trace_chunk: close a trace chunk | |
2606 | */ | |
2607 | static int relay_close_trace_chunk(const struct lttcomm_relayd_hdr *recv_hdr, | |
2608 | struct relay_connection *conn, | |
2609 | const struct lttng_buffer_view *payload) | |
2610 | { | |
9898f786 | 2611 | int ret = 0, buf_ret; |
bbc4768c JG |
2612 | ssize_t send_ret; |
2613 | struct relay_session *session = conn->session; | |
2614 | struct lttcomm_relayd_close_trace_chunk *msg; | |
ecd1a12f | 2615 | struct lttcomm_relayd_close_trace_chunk_reply reply = {}; |
bbc4768c JG |
2616 | struct lttng_buffer_view header_view; |
2617 | struct lttng_trace_chunk *chunk = NULL; | |
2618 | enum lttng_error_code reply_code = LTTNG_OK; | |
2619 | enum lttng_trace_chunk_status chunk_status; | |
2620 | uint64_t chunk_id; | |
c35f9726 | 2621 | LTTNG_OPTIONAL(enum lttng_trace_chunk_command_type) close_command = {}; |
bbc4768c | 2622 | time_t close_timestamp; |
ecd1a12f MD |
2623 | char closed_trace_chunk_path[LTTNG_PATH_MAX]; |
2624 | size_t path_length = 0; | |
2625 | const char *chunk_name = NULL; | |
2626 | struct lttng_dynamic_buffer reply_payload; | |
2627 | ||
2628 | lttng_dynamic_buffer_init(&reply_payload); | |
bbc4768c JG |
2629 | |
2630 | if (!session || !conn->version_check_done) { | |
2631 | ERR("Trying to close a trace chunk before version check"); | |
2632 | ret = -1; | |
2633 | goto end_no_reply; | |
2634 | } | |
2635 | ||
2636 | if (session->major == 2 && session->minor < 11) { | |
2637 | ERR("Chunk close command is unsupported before 2.11"); | |
2638 | ret = -1; | |
2639 | goto end_no_reply; | |
2640 | } | |
2641 | ||
2642 | header_view = lttng_buffer_view_from_view(payload, 0, sizeof(*msg)); | |
2643 | if (!header_view.data) { | |
2644 | ERR("Failed to receive payload of chunk close command"); | |
2645 | ret = -1; | |
2646 | goto end_no_reply; | |
2647 | } | |
2648 | ||
2649 | /* Convert to host endianness. */ | |
2650 | msg = (typeof(msg)) header_view.data; | |
2651 | chunk_id = be64toh(msg->chunk_id); | |
2652 | close_timestamp = (time_t) be64toh(msg->close_timestamp); | |
2653 | close_command = (typeof(close_command)){ | |
2654 | .value = be32toh(msg->close_command.value), | |
2655 | .is_set = msg->close_command.is_set, | |
2656 | }; | |
2657 | ||
2658 | chunk = sessiond_trace_chunk_registry_get_chunk( | |
2659 | sessiond_trace_chunk_registry, | |
2660 | conn->session->sessiond_uuid, | |
2661 | conn->session->id, | |
2662 | chunk_id); | |
2663 | if (!chunk) { | |
c70636a7 | 2664 | char uuid_str[LTTNG_UUID_STR_LEN]; |
bbc4768c JG |
2665 | |
2666 | lttng_uuid_to_str(conn->session->sessiond_uuid, uuid_str); | |
2667 | ERR("Failed to find chunk to close: sessiond_uuid = %s, session_id = %" PRIu64 ", chunk_id = %" PRIu64, | |
2668 | uuid_str, | |
2669 | conn->session->id, | |
2670 | msg->chunk_id); | |
2671 | ret = -1; | |
2672 | reply_code = LTTNG_ERR_NOMEM; | |
2673 | goto end; | |
2674 | } | |
2675 | ||
62bad3bf JG |
2676 | pthread_mutex_lock(&session->lock); |
2677 | if (session->pending_closure_trace_chunk && | |
2678 | session->pending_closure_trace_chunk != chunk) { | |
2679 | ERR("Trace chunk close command for session \"%s\" does not target the trace chunk pending closure", | |
2680 | session->session_name); | |
2681 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
2682 | ret = -1; | |
2683 | goto end_unlock_session; | |
2684 | } | |
2685 | ||
bbc4768c JG |
2686 | chunk_status = lttng_trace_chunk_set_close_timestamp( |
2687 | chunk, close_timestamp); | |
2688 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2689 | ERR("Failed to set trace chunk close timestamp"); | |
2690 | ret = -1; | |
2691 | reply_code = LTTNG_ERR_UNK; | |
62bad3bf | 2692 | goto end_unlock_session; |
bbc4768c JG |
2693 | } |
2694 | ||
2695 | if (close_command.is_set) { | |
2696 | chunk_status = lttng_trace_chunk_set_close_command( | |
2697 | chunk, close_command.value); | |
2698 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2699 | ret = -1; | |
2700 | reply_code = LTTNG_ERR_INVALID; | |
62bad3bf | 2701 | goto end_unlock_session; |
bbc4768c JG |
2702 | } |
2703 | } | |
ecd1a12f MD |
2704 | chunk_status = lttng_trace_chunk_get_name(chunk, &chunk_name, NULL); |
2705 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2706 | ERR("Failed to get chunk name"); | |
2707 | ret = -1; | |
2708 | reply_code = LTTNG_ERR_UNK; | |
2709 | goto end_unlock_session; | |
2710 | } | |
2711 | if (!session->has_rotated && !session->snapshot) { | |
2712 | ret = lttng_strncpy(closed_trace_chunk_path, | |
2713 | session->output_path, | |
2714 | sizeof(closed_trace_chunk_path)); | |
2715 | if (ret) { | |
2716 | ERR("Failed to send trace chunk path: path length of %zu bytes exceeds the maximal allowed length of %zu bytes", | |
2717 | strlen(session->output_path), | |
2718 | sizeof(closed_trace_chunk_path)); | |
2719 | reply_code = LTTNG_ERR_NOMEM; | |
2720 | ret = -1; | |
2721 | goto end_unlock_session; | |
2722 | } | |
2723 | } else { | |
2724 | if (session->snapshot) { | |
2725 | ret = snprintf(closed_trace_chunk_path, | |
2726 | sizeof(closed_trace_chunk_path), | |
2727 | "%s/%s", session->output_path, | |
2728 | chunk_name); | |
2729 | } else { | |
2730 | ret = snprintf(closed_trace_chunk_path, | |
2731 | sizeof(closed_trace_chunk_path), | |
2732 | "%s/" DEFAULT_ARCHIVED_TRACE_CHUNKS_DIRECTORY | |
2733 | "/%s", | |
2734 | session->output_path, chunk_name); | |
2735 | } | |
2736 | if (ret < 0 || ret == sizeof(closed_trace_chunk_path)) { | |
2737 | ERR("Failed to format closed trace chunk resulting path"); | |
2738 | reply_code = ret < 0 ? LTTNG_ERR_UNK : LTTNG_ERR_NOMEM; | |
2739 | ret = -1; | |
2740 | goto end_unlock_session; | |
2741 | } | |
2742 | } | |
2743 | DBG("Reply chunk path on close: %s", closed_trace_chunk_path); | |
2744 | path_length = strlen(closed_trace_chunk_path) + 1; | |
2745 | if (path_length > UINT32_MAX) { | |
2746 | ERR("Closed trace chunk path exceeds the maximal length allowed by the protocol"); | |
2747 | ret = -1; | |
2748 | reply_code = LTTNG_ERR_INVALID_PROTOCOL; | |
2749 | goto end_unlock_session; | |
2750 | } | |
bbc4768c | 2751 | |
c35f9726 JG |
2752 | if (session->current_trace_chunk == chunk) { |
2753 | /* | |
2754 | * After a trace chunk close command, no new streams | |
2755 | * referencing the chunk may be created. Hence, on the | |
2756 | * event that no new trace chunk have been created for | |
2757 | * the session, the reference to the current trace chunk | |
2758 | * is released in order to allow it to be reclaimed when | |
2759 | * the last stream releases its reference to it. | |
2760 | */ | |
2761 | lttng_trace_chunk_put(session->current_trace_chunk); | |
2762 | session->current_trace_chunk = NULL; | |
2763 | } | |
62bad3bf JG |
2764 | lttng_trace_chunk_put(session->pending_closure_trace_chunk); |
2765 | session->pending_closure_trace_chunk = NULL; | |
2766 | end_unlock_session: | |
c35f9726 JG |
2767 | pthread_mutex_unlock(&session->lock); |
2768 | ||
bbc4768c | 2769 | end: |
ecd1a12f MD |
2770 | reply.generic.ret_code = htobe32((uint32_t) reply_code); |
2771 | reply.path_length = htobe32((uint32_t) path_length); | |
9898f786 | 2772 | buf_ret = lttng_dynamic_buffer_append( |
ecd1a12f | 2773 | &reply_payload, &reply, sizeof(reply)); |
9898f786 | 2774 | if (buf_ret) { |
ecd1a12f MD |
2775 | ERR("Failed to append \"close trace chunk\" command reply header to payload buffer"); |
2776 | goto end_no_reply; | |
2777 | } | |
2778 | ||
2779 | if (reply_code == LTTNG_OK) { | |
9898f786 | 2780 | buf_ret = lttng_dynamic_buffer_append(&reply_payload, |
ecd1a12f | 2781 | closed_trace_chunk_path, path_length); |
9898f786 | 2782 | if (buf_ret) { |
ecd1a12f MD |
2783 | ERR("Failed to append \"close trace chunk\" command reply path to payload buffer"); |
2784 | goto end_no_reply; | |
2785 | } | |
2786 | } | |
2787 | ||
bbc4768c | 2788 | send_ret = conn->sock->ops->sendmsg(conn->sock, |
ecd1a12f MD |
2789 | reply_payload.data, |
2790 | reply_payload.size, | |
bbc4768c | 2791 | 0); |
ecd1a12f MD |
2792 | if (send_ret < reply_payload.size) { |
2793 | ERR("Failed to send \"close trace chunk\" command reply of %zu bytes (ret = %zd)", | |
2794 | reply_payload.size, send_ret); | |
bbc4768c | 2795 | ret = -1; |
ecd1a12f | 2796 | goto end_no_reply; |
bbc4768c JG |
2797 | } |
2798 | end_no_reply: | |
2799 | lttng_trace_chunk_put(chunk); | |
ecd1a12f | 2800 | lttng_dynamic_buffer_reset(&reply_payload); |
bbc4768c JG |
2801 | return ret; |
2802 | } | |
2803 | ||
c35f9726 JG |
2804 | /* |
2805 | * relay_trace_chunk_exists: check if a trace chunk exists | |
2806 | */ | |
2807 | static int relay_trace_chunk_exists(const struct lttcomm_relayd_hdr *recv_hdr, | |
2808 | struct relay_connection *conn, | |
2809 | const struct lttng_buffer_view *payload) | |
2810 | { | |
2811 | int ret = 0; | |
2812 | ssize_t send_ret; | |
2813 | struct relay_session *session = conn->session; | |
2814 | struct lttcomm_relayd_trace_chunk_exists *msg; | |
2815 | struct lttcomm_relayd_trace_chunk_exists_reply reply = {}; | |
2816 | struct lttng_buffer_view header_view; | |
c35f9726 | 2817 | uint64_t chunk_id; |
6b584c2e | 2818 | bool chunk_exists; |
c35f9726 JG |
2819 | |
2820 | if (!session || !conn->version_check_done) { | |
2821 | ERR("Trying to close a trace chunk before version check"); | |
2822 | ret = -1; | |
2823 | goto end_no_reply; | |
2824 | } | |
2825 | ||
2826 | if (session->major == 2 && session->minor < 11) { | |
2827 | ERR("Chunk close command is unsupported before 2.11"); | |
2828 | ret = -1; | |
2829 | goto end_no_reply; | |
2830 | } | |
2831 | ||
2832 | header_view = lttng_buffer_view_from_view(payload, 0, sizeof(*msg)); | |
2833 | if (!header_view.data) { | |
2834 | ERR("Failed to receive payload of chunk close command"); | |
2835 | ret = -1; | |
2836 | goto end_no_reply; | |
2837 | } | |
2838 | ||
2839 | /* Convert to host endianness. */ | |
2840 | msg = (typeof(msg)) header_view.data; | |
2841 | chunk_id = be64toh(msg->chunk_id); | |
2842 | ||
6b584c2e | 2843 | ret = sessiond_trace_chunk_registry_chunk_exists( |
c35f9726 JG |
2844 | sessiond_trace_chunk_registry, |
2845 | conn->session->sessiond_uuid, | |
2846 | conn->session->id, | |
6b584c2e JG |
2847 | chunk_id, &chunk_exists); |
2848 | /* | |
2849 | * If ret is not 0, send the reply and report the error to the caller. | |
2850 | * It is a protocol (or internal) error and the session/connection | |
2851 | * should be torn down. | |
2852 | */ | |
2853 | reply = (typeof(reply)){ | |
2854 | .generic.ret_code = htobe32((uint32_t) | |
2855 | (ret == 0 ? LTTNG_OK : LTTNG_ERR_INVALID_PROTOCOL)), | |
2856 | .trace_chunk_exists = ret == 0 ? chunk_exists : 0, | |
c35f9726 | 2857 | }; |
6b584c2e JG |
2858 | send_ret = conn->sock->ops->sendmsg( |
2859 | conn->sock, &reply, sizeof(reply), 0); | |
c35f9726 JG |
2860 | if (send_ret < (ssize_t) sizeof(reply)) { |
2861 | ERR("Failed to send \"create trace chunk\" command reply (ret = %zd)", | |
2862 | send_ret); | |
2863 | ret = -1; | |
2864 | } | |
2865 | end_no_reply: | |
c35f9726 JG |
2866 | return ret; |
2867 | } | |
2868 | ||
8614e600 MD |
2869 | /* |
2870 | * relay_get_configuration: query whether feature is available | |
2871 | */ | |
2872 | static int relay_get_configuration(const struct lttcomm_relayd_hdr *recv_hdr, | |
2873 | struct relay_connection *conn, | |
2874 | const struct lttng_buffer_view *payload) | |
2875 | { | |
2876 | int ret = 0; | |
2877 | ssize_t send_ret; | |
2878 | struct lttcomm_relayd_get_configuration *msg; | |
2879 | struct lttcomm_relayd_get_configuration_reply reply = {}; | |
2880 | struct lttng_buffer_view header_view; | |
2881 | uint64_t query_flags = 0; | |
2882 | uint64_t result_flags = 0; | |
2883 | ||
2884 | header_view = lttng_buffer_view_from_view(payload, 0, sizeof(*msg)); | |
2885 | if (!header_view.data) { | |
2886 | ERR("Failed to receive payload of chunk close command"); | |
2887 | ret = -1; | |
2888 | goto end_no_reply; | |
2889 | } | |
2890 | ||
2891 | /* Convert to host endianness. */ | |
2892 | msg = (typeof(msg)) header_view.data; | |
2893 | query_flags = be64toh(msg->query_flags); | |
2894 | ||
2895 | if (query_flags) { | |
2896 | ret = LTTNG_ERR_INVALID_PROTOCOL; | |
2897 | goto reply; | |
2898 | } | |
2899 | if (opt_allow_clear) { | |
2900 | result_flags |= LTTCOMM_RELAYD_CONFIGURATION_FLAG_CLEAR_ALLOWED; | |
2901 | } | |
2902 | ret = 0; | |
2903 | reply: | |
2904 | reply = (typeof(reply)){ | |
2905 | .generic.ret_code = htobe32((uint32_t) | |
2906 | (ret == 0 ? LTTNG_OK : LTTNG_ERR_INVALID_PROTOCOL)), | |
2907 | .relayd_configuration_flags = htobe64(result_flags), | |
2908 | }; | |
2909 | send_ret = conn->sock->ops->sendmsg( | |
2910 | conn->sock, &reply, sizeof(reply), 0); | |
2911 | if (send_ret < (ssize_t) sizeof(reply)) { | |
2912 | ERR("Failed to send \"get configuration\" command reply (ret = %zd)", | |
2913 | send_ret); | |
2914 | ret = -1; | |
2915 | } | |
2916 | end_no_reply: | |
2917 | return ret; | |
2918 | } | |
2919 | ||
5312a3ed JG |
2920 | #define DBG_CMD(cmd_name, conn) \ |
2921 | DBG3("Processing \"%s\" command for socket %i", cmd_name, conn->sock->fd); | |
2922 | ||
2923 | static int relay_process_control_command(struct relay_connection *conn, | |
2924 | const struct lttcomm_relayd_hdr *header, | |
2925 | const struct lttng_buffer_view *payload) | |
b8aa1682 JD |
2926 | { |
2927 | int ret = 0; | |
2928 | ||
5312a3ed | 2929 | switch (header->cmd) { |
b8aa1682 | 2930 | case RELAYD_CREATE_SESSION: |
5312a3ed JG |
2931 | DBG_CMD("RELAYD_CREATE_SESSION", conn); |
2932 | ret = relay_create_session(header, conn, payload); | |
b8aa1682 | 2933 | break; |
b8aa1682 | 2934 | case RELAYD_ADD_STREAM: |
5312a3ed JG |
2935 | DBG_CMD("RELAYD_ADD_STREAM", conn); |
2936 | ret = relay_add_stream(header, conn, payload); | |
b8aa1682 JD |
2937 | break; |
2938 | case RELAYD_START_DATA: | |
5312a3ed JG |
2939 | DBG_CMD("RELAYD_START_DATA", conn); |
2940 | ret = relay_start(header, conn, payload); | |
b8aa1682 JD |
2941 | break; |
2942 | case RELAYD_SEND_METADATA: | |
5312a3ed JG |
2943 | DBG_CMD("RELAYD_SEND_METADATA", conn); |
2944 | ret = relay_recv_metadata(header, conn, payload); | |
b8aa1682 JD |
2945 | break; |
2946 | case RELAYD_VERSION: | |
5312a3ed JG |
2947 | DBG_CMD("RELAYD_VERSION", conn); |
2948 | ret = relay_send_version(header, conn, payload); | |
b8aa1682 | 2949 | break; |
173af62f | 2950 | case RELAYD_CLOSE_STREAM: |
5312a3ed JG |
2951 | DBG_CMD("RELAYD_CLOSE_STREAM", conn); |
2952 | ret = relay_close_stream(header, conn, payload); | |
173af62f | 2953 | break; |
6d805429 | 2954 | case RELAYD_DATA_PENDING: |
5312a3ed JG |
2955 | DBG_CMD("RELAYD_DATA_PENDING", conn); |
2956 | ret = relay_data_pending(header, conn, payload); | |
c8f59ee5 DG |
2957 | break; |
2958 | case RELAYD_QUIESCENT_CONTROL: | |
5312a3ed JG |
2959 | DBG_CMD("RELAYD_QUIESCENT_CONTROL", conn); |
2960 | ret = relay_quiescent_control(header, conn, payload); | |
c8f59ee5 | 2961 | break; |
f7079f67 | 2962 | case RELAYD_BEGIN_DATA_PENDING: |
5312a3ed JG |
2963 | DBG_CMD("RELAYD_BEGIN_DATA_PENDING", conn); |
2964 | ret = relay_begin_data_pending(header, conn, payload); | |
f7079f67 DG |
2965 | break; |
2966 | case RELAYD_END_DATA_PENDING: | |
5312a3ed JG |
2967 | DBG_CMD("RELAYD_END_DATA_PENDING", conn); |
2968 | ret = relay_end_data_pending(header, conn, payload); | |
f7079f67 | 2969 | break; |
1c20f0e2 | 2970 | case RELAYD_SEND_INDEX: |
5312a3ed JG |
2971 | DBG_CMD("RELAYD_SEND_INDEX", conn); |
2972 | ret = relay_recv_index(header, conn, payload); | |
1c20f0e2 | 2973 | break; |
a4baae1b | 2974 | case RELAYD_STREAMS_SENT: |
5312a3ed JG |
2975 | DBG_CMD("RELAYD_STREAMS_SENT", conn); |
2976 | ret = relay_streams_sent(header, conn, payload); | |
a4baae1b | 2977 | break; |
93ec662e | 2978 | case RELAYD_RESET_METADATA: |
5312a3ed JG |
2979 | DBG_CMD("RELAYD_RESET_METADATA", conn); |
2980 | ret = relay_reset_metadata(header, conn, payload); | |
93ec662e | 2981 | break; |
c35f9726 JG |
2982 | case RELAYD_ROTATE_STREAMS: |
2983 | DBG_CMD("RELAYD_ROTATE_STREAMS", conn); | |
2984 | ret = relay_rotate_session_streams(header, conn, payload); | |
d3ecc550 | 2985 | break; |
e5add6d0 JG |
2986 | case RELAYD_CREATE_TRACE_CHUNK: |
2987 | DBG_CMD("RELAYD_CREATE_TRACE_CHUNK", conn); | |
2988 | ret = relay_create_trace_chunk(header, conn, payload); | |
2989 | break; | |
bbc4768c JG |
2990 | case RELAYD_CLOSE_TRACE_CHUNK: |
2991 | DBG_CMD("RELAYD_CLOSE_TRACE_CHUNK", conn); | |
2992 | ret = relay_close_trace_chunk(header, conn, payload); | |
2993 | break; | |
c35f9726 JG |
2994 | case RELAYD_TRACE_CHUNK_EXISTS: |
2995 | DBG_CMD("RELAYD_TRACE_CHUNK_EXISTS", conn); | |
2996 | ret = relay_trace_chunk_exists(header, conn, payload); | |
2997 | break; | |
8614e600 MD |
2998 | case RELAYD_GET_CONFIGURATION: |
2999 | DBG_CMD("RELAYD_GET_CONFIGURATION", conn); | |
3000 | ret = relay_get_configuration(header, conn, payload); | |
3001 | break; | |
b8aa1682 JD |
3002 | case RELAYD_UPDATE_SYNC_INFO: |
3003 | default: | |
5312a3ed | 3004 | ERR("Received unknown command (%u)", header->cmd); |
58eb9381 | 3005 | relay_unknown_command(conn); |
b8aa1682 JD |
3006 | ret = -1; |
3007 | goto end; | |
3008 | } | |
3009 | ||
3010 | end: | |
3011 | return ret; | |
3012 | } | |
3013 | ||
5569b118 JG |
3014 | static enum relay_connection_status relay_process_control_receive_payload( |
3015 | struct relay_connection *conn) | |
5312a3ed JG |
3016 | { |
3017 | int ret = 0; | |
5569b118 | 3018 | enum relay_connection_status status = RELAY_CONNECTION_STATUS_OK; |
5312a3ed JG |
3019 | struct lttng_dynamic_buffer *reception_buffer = |
3020 | &conn->protocol.ctrl.reception_buffer; | |
3021 | struct ctrl_connection_state_receive_payload *state = | |
3022 | &conn->protocol.ctrl.state.receive_payload; | |
3023 | struct lttng_buffer_view payload_view; | |
3024 | ||
3025 | if (state->left_to_receive == 0) { | |
3026 | /* Short-circuit for payload-less commands. */ | |
3027 | goto reception_complete; | |
3028 | } | |
3029 | ||
3030 | ret = conn->sock->ops->recvmsg(conn->sock, | |
3031 | reception_buffer->data + state->received, | |
3032 | state->left_to_receive, MSG_DONTWAIT); | |
3033 | if (ret < 0) { | |
5569b118 JG |
3034 | if (errno != EAGAIN && errno != EWOULDBLOCK) { |
3035 | PERROR("Unable to receive command payload on sock %d", | |
3036 | conn->sock->fd); | |
3037 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3038 | } | |
5312a3ed JG |
3039 | goto end; |
3040 | } else if (ret == 0) { | |
3041 | DBG("Socket %d performed an orderly shutdown (received EOF)", conn->sock->fd); | |
5569b118 | 3042 | status = RELAY_CONNECTION_STATUS_CLOSED; |
5312a3ed JG |
3043 | goto end; |
3044 | } | |
3045 | ||
3046 | assert(ret > 0); | |
3047 | assert(ret <= state->left_to_receive); | |
3048 | ||
3049 | state->left_to_receive -= ret; | |
3050 | state->received += ret; | |
3051 | ||
3052 | if (state->left_to_receive > 0) { | |
3053 | /* | |
3054 | * Can't transition to the protocol's next state, wait to | |
3055 | * receive the rest of the header. | |
3056 | */ | |
3057 | DBG3("Partial reception of control connection protocol payload (received %" PRIu64 " bytes, %" PRIu64 " bytes left to receive, fd = %i)", | |
3058 | state->received, state->left_to_receive, | |
3059 | conn->sock->fd); | |
5312a3ed JG |
3060 | goto end; |
3061 | } | |
3062 | ||
3063 | reception_complete: | |
3064 | DBG("Done receiving control command payload: fd = %i, payload size = %" PRIu64 " bytes", | |
3065 | conn->sock->fd, state->received); | |
3066 | /* | |
3067 | * The payload required to process the command has been received. | |
3068 | * A view to the reception buffer is forwarded to the various | |
3069 | * commands and the state of the control is reset on success. | |
3070 | * | |
3071 | * Commands are responsible for sending their reply to the peer. | |
3072 | */ | |
3073 | payload_view = lttng_buffer_view_from_dynamic_buffer(reception_buffer, | |
3074 | 0, -1); | |
3075 | ret = relay_process_control_command(conn, | |
3076 | &state->header, &payload_view); | |
3077 | if (ret < 0) { | |
5569b118 | 3078 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed JG |
3079 | goto end; |
3080 | } | |
3081 | ||
3082 | ret = connection_reset_protocol_state(conn); | |
5569b118 JG |
3083 | if (ret) { |
3084 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3085 | } | |
5312a3ed | 3086 | end: |
5569b118 | 3087 | return status; |
5312a3ed JG |
3088 | } |
3089 | ||
5569b118 JG |
3090 | static enum relay_connection_status relay_process_control_receive_header( |
3091 | struct relay_connection *conn) | |
5312a3ed JG |
3092 | { |
3093 | int ret = 0; | |
5569b118 | 3094 | enum relay_connection_status status = RELAY_CONNECTION_STATUS_OK; |
5312a3ed JG |
3095 | struct lttcomm_relayd_hdr header; |
3096 | struct lttng_dynamic_buffer *reception_buffer = | |
3097 | &conn->protocol.ctrl.reception_buffer; | |
3098 | struct ctrl_connection_state_receive_header *state = | |
3099 | &conn->protocol.ctrl.state.receive_header; | |
3100 | ||
3101 | assert(state->left_to_receive != 0); | |
3102 | ||
3103 | ret = conn->sock->ops->recvmsg(conn->sock, | |
3104 | reception_buffer->data + state->received, | |
3105 | state->left_to_receive, MSG_DONTWAIT); | |
3106 | if (ret < 0) { | |
5569b118 JG |
3107 | if (errno != EAGAIN && errno != EWOULDBLOCK) { |
3108 | PERROR("Unable to receive control command header on sock %d", | |
3109 | conn->sock->fd); | |
3110 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3111 | } | |
5312a3ed JG |
3112 | goto end; |
3113 | } else if (ret == 0) { | |
3114 | DBG("Socket %d performed an orderly shutdown (received EOF)", conn->sock->fd); | |
5569b118 | 3115 | status = RELAY_CONNECTION_STATUS_CLOSED; |
5312a3ed JG |
3116 | goto end; |
3117 | } | |
3118 | ||
3119 | assert(ret > 0); | |
3120 | assert(ret <= state->left_to_receive); | |
3121 | ||
3122 | state->left_to_receive -= ret; | |
3123 | state->received += ret; | |
3124 | ||
3125 | if (state->left_to_receive > 0) { | |
3126 | /* | |
3127 | * Can't transition to the protocol's next state, wait to | |
3128 | * receive the rest of the header. | |
3129 | */ | |
3130 | DBG3("Partial reception of control connection protocol header (received %" PRIu64 " bytes, %" PRIu64 " bytes left to receive, fd = %i)", | |
3131 | state->received, state->left_to_receive, | |
3132 | conn->sock->fd); | |
5312a3ed JG |
3133 | goto end; |
3134 | } | |
3135 | ||
3136 | /* Transition to next state: receiving the command's payload. */ | |
3137 | conn->protocol.ctrl.state_id = | |
3138 | CTRL_CONNECTION_STATE_RECEIVE_PAYLOAD; | |
3139 | memcpy(&header, reception_buffer->data, sizeof(header)); | |
3140 | header.circuit_id = be64toh(header.circuit_id); | |
3141 | header.data_size = be64toh(header.data_size); | |
3142 | header.cmd = be32toh(header.cmd); | |
3143 | header.cmd_version = be32toh(header.cmd_version); | |
3144 | memcpy(&conn->protocol.ctrl.state.receive_payload.header, | |
3145 | &header, sizeof(header)); | |
3146 | ||
3147 | DBG("Done receiving control command header: fd = %i, cmd = %" PRIu32 ", cmd_version = %" PRIu32 ", payload size = %" PRIu64 " bytes", | |
3148 | conn->sock->fd, header.cmd, header.cmd_version, | |
3149 | header.data_size); | |
3150 | ||
715e6fb1 | 3151 | if (header.data_size > DEFAULT_NETWORK_RELAYD_CTRL_MAX_PAYLOAD_SIZE) { |
5312a3ed JG |
3152 | ERR("Command header indicates a payload (%" PRIu64 " bytes) that exceeds the maximal payload size allowed on a control connection.", |
3153 | header.data_size); | |
5569b118 | 3154 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed JG |
3155 | goto end; |
3156 | } | |
3157 | ||
3158 | conn->protocol.ctrl.state.receive_payload.left_to_receive = | |
3159 | header.data_size; | |
3160 | conn->protocol.ctrl.state.receive_payload.received = 0; | |
3161 | ret = lttng_dynamic_buffer_set_size(reception_buffer, | |
3162 | header.data_size); | |
3163 | if (ret) { | |
5569b118 | 3164 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed JG |
3165 | goto end; |
3166 | } | |
3167 | ||
3168 | if (header.data_size == 0) { | |
3169 | /* | |
3170 | * Manually invoke the next state as the poll loop | |
3171 | * will not wake-up to allow us to proceed further. | |
3172 | */ | |
5569b118 | 3173 | status = relay_process_control_receive_payload(conn); |
5312a3ed JG |
3174 | } |
3175 | end: | |
5569b118 | 3176 | return status; |
5312a3ed JG |
3177 | } |
3178 | ||
3179 | /* | |
3180 | * Process the commands received on the control socket | |
3181 | */ | |
5569b118 JG |
3182 | static enum relay_connection_status relay_process_control( |
3183 | struct relay_connection *conn) | |
5312a3ed | 3184 | { |
5569b118 | 3185 | enum relay_connection_status status; |
5312a3ed JG |
3186 | |
3187 | switch (conn->protocol.ctrl.state_id) { | |
3188 | case CTRL_CONNECTION_STATE_RECEIVE_HEADER: | |
5569b118 | 3189 | status = relay_process_control_receive_header(conn); |
5312a3ed JG |
3190 | break; |
3191 | case CTRL_CONNECTION_STATE_RECEIVE_PAYLOAD: | |
5569b118 | 3192 | status = relay_process_control_receive_payload(conn); |
5312a3ed JG |
3193 | break; |
3194 | default: | |
3195 | ERR("Unknown control connection protocol state encountered."); | |
3196 | abort(); | |
3197 | } | |
3198 | ||
5569b118 | 3199 | return status; |
5312a3ed JG |
3200 | } |
3201 | ||
5569b118 JG |
3202 | static enum relay_connection_status relay_process_data_receive_header( |
3203 | struct relay_connection *conn) | |
b8aa1682 | 3204 | { |
5312a3ed | 3205 | int ret; |
5569b118 | 3206 | enum relay_connection_status status = RELAY_CONNECTION_STATUS_OK; |
5312a3ed JG |
3207 | struct data_connection_state_receive_header *state = |
3208 | &conn->protocol.data.state.receive_header; | |
3209 | struct lttcomm_relayd_data_hdr header; | |
b8aa1682 | 3210 | struct relay_stream *stream; |
5312a3ed JG |
3211 | |
3212 | assert(state->left_to_receive != 0); | |
3213 | ||
3214 | ret = conn->sock->ops->recvmsg(conn->sock, | |
3215 | state->header_reception_buffer + state->received, | |
3216 | state->left_to_receive, MSG_DONTWAIT); | |
3217 | if (ret < 0) { | |
5569b118 JG |
3218 | if (errno != EAGAIN && errno != EWOULDBLOCK) { |
3219 | PERROR("Unable to receive data header on sock %d", conn->sock->fd); | |
3220 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3221 | } | |
5312a3ed JG |
3222 | goto end; |
3223 | } else if (ret == 0) { | |
3224 | /* Orderly shutdown. Not necessary to print an error. */ | |
3225 | DBG("Socket %d performed an orderly shutdown (received EOF)", conn->sock->fd); | |
5569b118 | 3226 | status = RELAY_CONNECTION_STATUS_CLOSED; |
b8aa1682 JD |
3227 | goto end; |
3228 | } | |
3229 | ||
5312a3ed JG |
3230 | assert(ret > 0); |
3231 | assert(ret <= state->left_to_receive); | |
3232 | ||
3233 | state->left_to_receive -= ret; | |
3234 | state->received += ret; | |
3235 | ||
3236 | if (state->left_to_receive > 0) { | |
3237 | /* | |
3238 | * Can't transition to the protocol's next state, wait to | |
3239 | * receive the rest of the header. | |
3240 | */ | |
3241 | DBG3("Partial reception of data connection header (received %" PRIu64 " bytes, %" PRIu64 " bytes left to receive, fd = %i)", | |
3242 | state->received, state->left_to_receive, | |
3243 | conn->sock->fd); | |
7591bab1 | 3244 | goto end; |
b8aa1682 | 3245 | } |
b8aa1682 | 3246 | |
5312a3ed JG |
3247 | /* Transition to next state: receiving the payload. */ |
3248 | conn->protocol.data.state_id = DATA_CONNECTION_STATE_RECEIVE_PAYLOAD; | |
173af62f | 3249 | |
5312a3ed JG |
3250 | memcpy(&header, state->header_reception_buffer, sizeof(header)); |
3251 | header.circuit_id = be64toh(header.circuit_id); | |
3252 | header.stream_id = be64toh(header.stream_id); | |
3253 | header.data_size = be32toh(header.data_size); | |
3254 | header.net_seq_num = be64toh(header.net_seq_num); | |
3255 | header.padding_size = be32toh(header.padding_size); | |
3256 | memcpy(&conn->protocol.data.state.receive_payload.header, &header, sizeof(header)); | |
3257 | ||
3258 | conn->protocol.data.state.receive_payload.left_to_receive = | |
3259 | header.data_size; | |
3260 | conn->protocol.data.state.receive_payload.received = 0; | |
3261 | conn->protocol.data.state.receive_payload.rotate_index = false; | |
3262 | ||
3263 | DBG("Received data connection header on fd %i: circuit_id = %" PRIu64 ", stream_id = %" PRIu64 ", data_size = %" PRIu32 ", net_seq_num = %" PRIu64 ", padding_size = %" PRIu32, | |
3264 | conn->sock->fd, header.circuit_id, | |
3265 | header.stream_id, header.data_size, | |
3266 | header.net_seq_num, header.padding_size); | |
3267 | ||
3268 | stream = stream_get_by_id(header.stream_id); | |
3269 | if (!stream) { | |
3270 | DBG("relay_process_data_receive_payload: Cannot find stream %" PRIu64, | |
3271 | header.stream_id); | |
5569b118 JG |
3272 | /* Protocol error. */ |
3273 | status = RELAY_CONNECTION_STATUS_ERROR; | |
5312a3ed JG |
3274 | goto end; |
3275 | } | |
b8aa1682 | 3276 | |
7591bab1 | 3277 | pthread_mutex_lock(&stream->lock); |
c35f9726 JG |
3278 | /* Prepare stream for the reception of a new packet. */ |
3279 | ret = stream_init_packet(stream, header.data_size, | |
3280 | &conn->protocol.data.state.receive_payload.rotate_index); | |
3281 | pthread_mutex_unlock(&stream->lock); | |
3282 | if (ret) { | |
3283 | ERR("Failed to rotate stream output file"); | |
3284 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3285 | goto end_stream_unlock; | |
1c20f0e2 JD |
3286 | } |
3287 | ||
5312a3ed | 3288 | end_stream_unlock: |
5312a3ed JG |
3289 | stream_put(stream); |
3290 | end: | |
5569b118 | 3291 | return status; |
5312a3ed JG |
3292 | } |
3293 | ||
5569b118 JG |
3294 | static enum relay_connection_status relay_process_data_receive_payload( |
3295 | struct relay_connection *conn) | |
5312a3ed JG |
3296 | { |
3297 | int ret; | |
5569b118 | 3298 | enum relay_connection_status status = RELAY_CONNECTION_STATUS_OK; |
5312a3ed JG |
3299 | struct relay_stream *stream; |
3300 | struct data_connection_state_receive_payload *state = | |
3301 | &conn->protocol.data.state.receive_payload; | |
3302 | const size_t chunk_size = RECV_DATA_BUFFER_SIZE; | |
3303 | char data_buffer[chunk_size]; | |
3304 | bool partial_recv = false; | |
3305 | bool new_stream = false, close_requested = false, index_flushed = false; | |
3306 | uint64_t left_to_receive = state->left_to_receive; | |
3307 | struct relay_session *session; | |
3308 | ||
fd0f1e3e JR |
3309 | DBG3("Receiving data for stream id %" PRIu64 " seqnum %" PRIu64 ", %" PRIu64" bytes received, %" PRIu64 " bytes left to receive", |
3310 | state->header.stream_id, state->header.net_seq_num, | |
3311 | state->received, left_to_receive); | |
3312 | ||
5312a3ed JG |
3313 | stream = stream_get_by_id(state->header.stream_id); |
3314 | if (!stream) { | |
5569b118 | 3315 | /* Protocol error. */ |
fd0f1e3e | 3316 | ERR("relay_process_data_receive_payload: cannot find stream %" PRIu64, |
5312a3ed | 3317 | state->header.stream_id); |
5569b118 | 3318 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed | 3319 | goto end; |
1c20f0e2 JD |
3320 | } |
3321 | ||
5312a3ed JG |
3322 | pthread_mutex_lock(&stream->lock); |
3323 | session = stream->trace->session; | |
fd0f1e3e JR |
3324 | if (!conn->session) { |
3325 | ret = connection_set_session(conn, session); | |
3326 | if (ret) { | |
3327 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3328 | goto end_stream_unlock; | |
3329 | } | |
3330 | } | |
5312a3ed JG |
3331 | |
3332 | /* | |
3333 | * The size of the "chunk" received on any iteration is bounded by: | |
3334 | * - the data left to receive, | |
3335 | * - the data immediately available on the socket, | |
3336 | * - the on-stack data buffer | |
3337 | */ | |
3338 | while (left_to_receive > 0 && !partial_recv) { | |
5312a3ed | 3339 | size_t recv_size = min(left_to_receive, chunk_size); |
c35f9726 | 3340 | struct lttng_buffer_view packet_chunk; |
5312a3ed JG |
3341 | |
3342 | ret = conn->sock->ops->recvmsg(conn->sock, data_buffer, | |
3343 | recv_size, MSG_DONTWAIT); | |
3344 | if (ret < 0) { | |
5569b118 JG |
3345 | if (errno != EAGAIN && errno != EWOULDBLOCK) { |
3346 | PERROR("Socket %d error", conn->sock->fd); | |
3347 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3348 | } | |
0848dba7 | 3349 | goto end_stream_unlock; |
5312a3ed JG |
3350 | } else if (ret == 0) { |
3351 | /* No more data ready to be consumed on socket. */ | |
3352 | DBG3("No more data ready for consumption on data socket of stream id %" PRIu64, | |
3353 | state->header.stream_id); | |
5569b118 | 3354 | status = RELAY_CONNECTION_STATUS_CLOSED; |
5312a3ed JG |
3355 | break; |
3356 | } else if (ret < (int) recv_size) { | |
3357 | /* | |
3358 | * All the data available on the socket has been | |
3359 | * consumed. | |
3360 | */ | |
3361 | partial_recv = true; | |
c35f9726 | 3362 | recv_size = ret; |
0848dba7 MD |
3363 | } |
3364 | ||
c35f9726 JG |
3365 | packet_chunk = lttng_buffer_view_init(data_buffer, |
3366 | 0, recv_size); | |
3367 | assert(packet_chunk.data); | |
5312a3ed | 3368 | |
c35f9726 JG |
3369 | ret = stream_write(stream, &packet_chunk, 0); |
3370 | if (ret) { | |
0848dba7 | 3371 | ERR("Relay error writing data to file"); |
5569b118 | 3372 | status = RELAY_CONNECTION_STATUS_ERROR; |
0848dba7 MD |
3373 | goto end_stream_unlock; |
3374 | } | |
3375 | ||
5312a3ed JG |
3376 | left_to_receive -= recv_size; |
3377 | state->received += recv_size; | |
3378 | state->left_to_receive = left_to_receive; | |
5312a3ed JG |
3379 | } |
3380 | ||
3381 | if (state->left_to_receive > 0) { | |
3382 | /* | |
3383 | * Did not receive all the data expected, wait for more data to | |
3384 | * become available on the socket. | |
3385 | */ | |
3386 | DBG3("Partial receive on data connection of stream id %" PRIu64 ", %" PRIu64 " bytes received, %" PRIu64 " bytes left to receive", | |
3387 | state->header.stream_id, state->received, | |
3388 | state->left_to_receive); | |
5312a3ed | 3389 | goto end_stream_unlock; |
0848dba7 | 3390 | } |
5ab7344e | 3391 | |
c35f9726 JG |
3392 | ret = stream_write(stream, NULL, state->header.padding_size); |
3393 | if (ret) { | |
5569b118 | 3394 | status = RELAY_CONNECTION_STATUS_ERROR; |
7591bab1 | 3395 | goto end_stream_unlock; |
1d4dfdef | 3396 | } |
5312a3ed | 3397 | |
298a25ca | 3398 | if (session_streams_have_index(session)) { |
c35f9726 JG |
3399 | ret = stream_update_index(stream, state->header.net_seq_num, |
3400 | state->rotate_index, &index_flushed, | |
3401 | state->header.data_size + state->header.padding_size); | |
5312a3ed | 3402 | if (ret < 0) { |
c35f9726 | 3403 | ERR("Failed to update index: stream %" PRIu64 " net_seq_num %" PRIu64 " ret %d", |
5312a3ed JG |
3404 | stream->stream_handle, |
3405 | state->header.net_seq_num, ret); | |
5569b118 | 3406 | status = RELAY_CONNECTION_STATUS_ERROR; |
5312a3ed JG |
3407 | goto end_stream_unlock; |
3408 | } | |
3409 | } | |
3410 | ||
a8f9f353 | 3411 | if (stream->prev_data_seq == -1ULL) { |
c0bae11d MD |
3412 | new_stream = true; |
3413 | } | |
3414 | ||
c35f9726 JG |
3415 | ret = stream_complete_packet(stream, state->header.data_size + |
3416 | state->header.padding_size, state->header.net_seq_num, | |
3417 | index_flushed); | |
3418 | if (ret) { | |
3419 | status = RELAY_CONNECTION_STATUS_ERROR; | |
3420 | goto end_stream_unlock; | |
3421 | } | |
5312a3ed JG |
3422 | |
3423 | /* | |
3424 | * Resetting the protocol state (to RECEIVE_HEADER) will trash the | |
3425 | * contents of *state which are aliased (union) to the same location as | |
3426 | * the new state. Don't use it beyond this point. | |
3427 | */ | |
3428 | connection_reset_protocol_state(conn); | |
3429 | state = NULL; | |
173af62f | 3430 | |
7591bab1 | 3431 | end_stream_unlock: |
bda7c7b9 | 3432 | close_requested = stream->close_requested; |
7591bab1 | 3433 | pthread_mutex_unlock(&stream->lock); |
5312a3ed | 3434 | if (close_requested && left_to_receive == 0) { |
bda7c7b9 JG |
3435 | try_stream_close(stream); |
3436 | } | |
3437 | ||
c0bae11d MD |
3438 | if (new_stream) { |
3439 | pthread_mutex_lock(&session->lock); | |
3440 | uatomic_set(&session->new_streams, 1); | |
3441 | pthread_mutex_unlock(&session->lock); | |
3442 | } | |
5312a3ed | 3443 | |
7591bab1 | 3444 | stream_put(stream); |
b8aa1682 | 3445 | end: |
5569b118 | 3446 | return status; |
b8aa1682 JD |
3447 | } |
3448 | ||
5312a3ed JG |
3449 | /* |
3450 | * relay_process_data: Process the data received on the data socket | |
3451 | */ | |
5569b118 JG |
3452 | static enum relay_connection_status relay_process_data( |
3453 | struct relay_connection *conn) | |
5312a3ed | 3454 | { |
5569b118 | 3455 | enum relay_connection_status status; |
5312a3ed JG |
3456 | |
3457 | switch (conn->protocol.data.state_id) { | |
3458 | case DATA_CONNECTION_STATE_RECEIVE_HEADER: | |
5569b118 | 3459 | status = relay_process_data_receive_header(conn); |
5312a3ed JG |
3460 | break; |
3461 | case DATA_CONNECTION_STATE_RECEIVE_PAYLOAD: | |
5569b118 | 3462 | status = relay_process_data_receive_payload(conn); |
5312a3ed JG |
3463 | break; |
3464 | default: | |
3465 | ERR("Unexpected data connection communication state."); | |
3466 | abort(); | |
3467 | } | |
3468 | ||
5569b118 | 3469 | return status; |
5312a3ed JG |
3470 | } |
3471 | ||
7591bab1 | 3472 | static void cleanup_connection_pollfd(struct lttng_poll_event *events, int pollfd) |
b8aa1682 JD |
3473 | { |
3474 | int ret; | |
3475 | ||
58eb9381 | 3476 | (void) lttng_poll_del(events, pollfd); |
b8aa1682 JD |
3477 | |
3478 | ret = close(pollfd); | |
3479 | if (ret < 0) { | |
3480 | ERR("Closing pollfd %d", pollfd); | |
3481 | } | |
3482 | } | |
3483 | ||
7591bab1 MD |
3484 | static void relay_thread_close_connection(struct lttng_poll_event *events, |
3485 | int pollfd, struct relay_connection *conn) | |
9d1bbf21 | 3486 | { |
7591bab1 | 3487 | const char *type_str; |
2a174661 | 3488 | |
7591bab1 MD |
3489 | switch (conn->type) { |
3490 | case RELAY_DATA: | |
3491 | type_str = "Data"; | |
3492 | break; | |
3493 | case RELAY_CONTROL: | |
3494 | type_str = "Control"; | |
3495 | break; | |
3496 | case RELAY_VIEWER_COMMAND: | |
3497 | type_str = "Viewer Command"; | |
3498 | break; | |
3499 | case RELAY_VIEWER_NOTIFICATION: | |
3500 | type_str = "Viewer Notification"; | |
3501 | break; | |
3502 | default: | |
3503 | type_str = "Unknown"; | |
9d1bbf21 | 3504 | } |
7591bab1 MD |
3505 | cleanup_connection_pollfd(events, pollfd); |
3506 | connection_put(conn); | |
3507 | DBG("%s connection closed with %d", type_str, pollfd); | |
b8aa1682 JD |
3508 | } |
3509 | ||
3510 | /* | |
3511 | * This thread does the actual work | |
3512 | */ | |
7591bab1 | 3513 | static void *relay_thread_worker(void *data) |
b8aa1682 | 3514 | { |
beaad64c DG |
3515 | int ret, err = -1, last_seen_data_fd = -1; |
3516 | uint32_t nb_fd; | |
b8aa1682 JD |
3517 | struct lttng_poll_event events; |
3518 | struct lttng_ht *relay_connections_ht; | |
b8aa1682 | 3519 | struct lttng_ht_iter iter; |
90e7d72f | 3520 | struct relay_connection *destroy_conn = NULL; |
b8aa1682 JD |
3521 | |
3522 | DBG("[thread] Relay worker started"); | |
3523 | ||
9d1bbf21 MD |
3524 | rcu_register_thread(); |
3525 | ||
55706a7d MD |
3526 | health_register(health_relayd, HEALTH_RELAYD_TYPE_WORKER); |
3527 | ||
9b5e0863 MD |
3528 | if (testpoint(relayd_thread_worker)) { |
3529 | goto error_testpoint; | |
3530 | } | |
3531 | ||
f385ae0a MD |
3532 | health_code_update(); |
3533 | ||
b8aa1682 JD |
3534 | /* table of connections indexed on socket */ |
3535 | relay_connections_ht = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
095a4ae5 MD |
3536 | if (!relay_connections_ht) { |
3537 | goto relay_connections_ht_error; | |
3538 | } | |
b8aa1682 | 3539 | |
b8aa1682 JD |
3540 | ret = create_thread_poll_set(&events, 2); |
3541 | if (ret < 0) { | |
3542 | goto error_poll_create; | |
3543 | } | |
3544 | ||
58eb9381 | 3545 | ret = lttng_poll_add(&events, relay_conn_pipe[0], LPOLLIN | LPOLLRDHUP); |
b8aa1682 JD |
3546 | if (ret < 0) { |
3547 | goto error; | |
3548 | } | |
3549 | ||
beaad64c | 3550 | restart: |
b8aa1682 | 3551 | while (1) { |
beaad64c DG |
3552 | int idx = -1, i, seen_control = 0, last_notdel_data_fd = -1; |
3553 | ||
f385ae0a MD |
3554 | health_code_update(); |
3555 | ||
b8aa1682 | 3556 | /* Infinite blocking call, waiting for transmission */ |
87c1611d | 3557 | DBG3("Relayd worker thread polling..."); |
f385ae0a | 3558 | health_poll_entry(); |
b8aa1682 | 3559 | ret = lttng_poll_wait(&events, -1); |
f385ae0a | 3560 | health_poll_exit(); |
b8aa1682 JD |
3561 | if (ret < 0) { |
3562 | /* | |
3563 | * Restart interrupted system call. | |
3564 | */ | |
3565 | if (errno == EINTR) { | |
3566 | goto restart; | |
3567 | } | |
3568 | goto error; | |
3569 | } | |
3570 | ||
0d9c5d77 DG |
3571 | nb_fd = ret; |
3572 | ||
beaad64c | 3573 | /* |
7591bab1 MD |
3574 | * Process control. The control connection is |
3575 | * prioritized so we don't starve it with high | |
3576 | * throughput tracing data on the data connection. | |
beaad64c | 3577 | */ |
b8aa1682 JD |
3578 | for (i = 0; i < nb_fd; i++) { |
3579 | /* Fetch once the poll data */ | |
beaad64c DG |
3580 | uint32_t revents = LTTNG_POLL_GETEV(&events, i); |
3581 | int pollfd = LTTNG_POLL_GETFD(&events, i); | |
b8aa1682 | 3582 | |
f385ae0a MD |
3583 | health_code_update(); |
3584 | ||
b8aa1682 JD |
3585 | /* Thread quit pipe has been closed. Killing thread. */ |
3586 | ret = check_thread_quit_pipe(pollfd, revents); | |
3587 | if (ret) { | |
095a4ae5 MD |
3588 | err = 0; |
3589 | goto exit; | |
b8aa1682 JD |
3590 | } |
3591 | ||
58eb9381 DG |
3592 | /* Inspect the relay conn pipe for new connection */ |
3593 | if (pollfd == relay_conn_pipe[0]) { | |
03e43155 | 3594 | if (revents & LPOLLIN) { |
90e7d72f JG |
3595 | struct relay_connection *conn; |
3596 | ||
58eb9381 | 3597 | ret = lttng_read(relay_conn_pipe[0], &conn, sizeof(conn)); |
b8aa1682 JD |
3598 | if (ret < 0) { |
3599 | goto error; | |
3600 | } | |
73039936 FD |
3601 | ret = lttng_poll_add(&events, |
3602 | conn->sock->fd, | |
58eb9381 | 3603 | LPOLLIN | LPOLLRDHUP); |
73039936 FD |
3604 | if (ret) { |
3605 | ERR("Failed to add new connection file descriptor to poll set"); | |
3606 | goto error; | |
3607 | } | |
7591bab1 | 3608 | connection_ht_add(relay_connections_ht, conn); |
58eb9381 | 3609 | DBG("Connection socket %d added", conn->sock->fd); |
03e43155 MD |
3610 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
3611 | ERR("Relay connection pipe error"); | |
3612 | goto error; | |
3613 | } else { | |
3614 | ERR("Unexpected poll events %u for sock %d", revents, pollfd); | |
3615 | goto error; | |
b8aa1682 | 3616 | } |
58eb9381 | 3617 | } else { |
90e7d72f JG |
3618 | struct relay_connection *ctrl_conn; |
3619 | ||
7591bab1 | 3620 | ctrl_conn = connection_get_by_sock(relay_connections_ht, pollfd); |
58eb9381 | 3621 | /* If not found, there is a synchronization issue. */ |
90e7d72f | 3622 | assert(ctrl_conn); |
58eb9381 | 3623 | |
03e43155 MD |
3624 | if (ctrl_conn->type == RELAY_DATA) { |
3625 | if (revents & LPOLLIN) { | |
beaad64c DG |
3626 | /* |
3627 | * Flag the last seen data fd not deleted. It will be | |
3628 | * used as the last seen fd if any fd gets deleted in | |
3629 | * this first loop. | |
3630 | */ | |
3631 | last_notdel_data_fd = pollfd; | |
3632 | } | |
03e43155 MD |
3633 | goto put_ctrl_connection; |
3634 | } | |
3635 | assert(ctrl_conn->type == RELAY_CONTROL); | |
3636 | ||
3637 | if (revents & LPOLLIN) { | |
5569b118 JG |
3638 | enum relay_connection_status status; |
3639 | ||
3640 | status = relay_process_control(ctrl_conn); | |
3641 | if (status != RELAY_CONNECTION_STATUS_OK) { | |
fd0f1e3e JR |
3642 | /* |
3643 | * On socket error flag the session as aborted to force | |
3644 | * the cleanup of its stream otherwise it can leak | |
3645 | * during the lifetime of the relayd. | |
3646 | * | |
3647 | * This prevents situations in which streams can be | |
3648 | * left opened because an index was received, the | |
3649 | * control connection is closed, and the data | |
3650 | * connection is closed (uncleanly) before the packet's | |
3651 | * data provided. | |
3652 | * | |
3653 | * Since the control connection encountered an error, | |
3654 | * it is okay to be conservative and close the | |
3655 | * session right now as we can't rely on the protocol | |
3656 | * being respected anymore. | |
3657 | */ | |
3658 | if (status == RELAY_CONNECTION_STATUS_ERROR) { | |
3659 | session_abort(ctrl_conn->session); | |
3660 | } | |
3661 | ||
5569b118 | 3662 | /* Clear the connection on error or close. */ |
5312a3ed JG |
3663 | relay_thread_close_connection(&events, |
3664 | pollfd, | |
03e43155 | 3665 | ctrl_conn); |
03e43155 | 3666 | } |
5312a3ed | 3667 | seen_control = 1; |
03e43155 MD |
3668 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
3669 | relay_thread_close_connection(&events, | |
3670 | pollfd, ctrl_conn); | |
3671 | if (last_seen_data_fd == pollfd) { | |
3672 | last_seen_data_fd = last_notdel_data_fd; | |
3673 | } | |
58eb9381 | 3674 | } else { |
03e43155 MD |
3675 | ERR("Unexpected poll events %u for control sock %d", |
3676 | revents, pollfd); | |
3677 | connection_put(ctrl_conn); | |
3678 | goto error; | |
beaad64c | 3679 | } |
03e43155 | 3680 | put_ctrl_connection: |
7591bab1 | 3681 | connection_put(ctrl_conn); |
beaad64c DG |
3682 | } |
3683 | } | |
3684 | ||
3685 | /* | |
3686 | * The last loop handled a control request, go back to poll to make | |
3687 | * sure we prioritise the control socket. | |
3688 | */ | |
3689 | if (seen_control) { | |
3690 | continue; | |
3691 | } | |
3692 | ||
3693 | if (last_seen_data_fd >= 0) { | |
3694 | for (i = 0; i < nb_fd; i++) { | |
3695 | int pollfd = LTTNG_POLL_GETFD(&events, i); | |
f385ae0a MD |
3696 | |
3697 | health_code_update(); | |
3698 | ||
beaad64c DG |
3699 | if (last_seen_data_fd == pollfd) { |
3700 | idx = i; | |
3701 | break; | |
3702 | } | |
3703 | } | |
3704 | } | |
3705 | ||
3706 | /* Process data connection. */ | |
3707 | for (i = idx + 1; i < nb_fd; i++) { | |
3708 | /* Fetch the poll data. */ | |
3709 | uint32_t revents = LTTNG_POLL_GETEV(&events, i); | |
3710 | int pollfd = LTTNG_POLL_GETFD(&events, i); | |
90e7d72f | 3711 | struct relay_connection *data_conn; |
beaad64c | 3712 | |
f385ae0a MD |
3713 | health_code_update(); |
3714 | ||
fd20dac9 MD |
3715 | if (!revents) { |
3716 | /* No activity for this FD (poll implementation). */ | |
3717 | continue; | |
3718 | } | |
3719 | ||
beaad64c | 3720 | /* Skip the command pipe. It's handled in the first loop. */ |
58eb9381 | 3721 | if (pollfd == relay_conn_pipe[0]) { |
beaad64c DG |
3722 | continue; |
3723 | } | |
3724 | ||
7591bab1 | 3725 | data_conn = connection_get_by_sock(relay_connections_ht, pollfd); |
90e7d72f | 3726 | if (!data_conn) { |
fd20dac9 | 3727 | /* Skip it. Might be removed before. */ |
fd20dac9 MD |
3728 | continue; |
3729 | } | |
03e43155 MD |
3730 | if (data_conn->type == RELAY_CONTROL) { |
3731 | goto put_data_connection; | |
3732 | } | |
3733 | assert(data_conn->type == RELAY_DATA); | |
fd20dac9 MD |
3734 | |
3735 | if (revents & LPOLLIN) { | |
5569b118 JG |
3736 | enum relay_connection_status status; |
3737 | ||
3738 | status = relay_process_data(data_conn); | |
3739 | /* Connection closed or error. */ | |
3740 | if (status != RELAY_CONNECTION_STATUS_OK) { | |
fd0f1e3e JR |
3741 | /* |
3742 | * On socket error flag the session as aborted to force | |
3743 | * the cleanup of its stream otherwise it can leak | |
3744 | * during the lifetime of the relayd. | |
3745 | * | |
3746 | * This prevents situations in which streams can be | |
3747 | * left opened because an index was received, the | |
3748 | * control connection is closed, and the data | |
3749 | * connection is closed (uncleanly) before the packet's | |
3750 | * data provided. | |
3751 | * | |
3752 | * Since the data connection encountered an error, | |
3753 | * it is okay to be conservative and close the | |
3754 | * session right now as we can't rely on the protocol | |
3755 | * being respected anymore. | |
3756 | */ | |
3757 | if (status == RELAY_CONNECTION_STATUS_ERROR) { | |
3758 | session_abort(data_conn->session); | |
3759 | } | |
7591bab1 | 3760 | relay_thread_close_connection(&events, pollfd, |
03e43155 | 3761 | data_conn); |
fd20dac9 MD |
3762 | /* |
3763 | * Every goto restart call sets the last seen fd where | |
3764 | * here we don't really care since we gracefully | |
3765 | * continue the loop after the connection is deleted. | |
3766 | */ | |
3767 | } else { | |
3768 | /* Keep last seen port. */ | |
3769 | last_seen_data_fd = pollfd; | |
7591bab1 | 3770 | connection_put(data_conn); |
fd20dac9 | 3771 | goto restart; |
b8aa1682 | 3772 | } |
03e43155 MD |
3773 | } else if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
3774 | relay_thread_close_connection(&events, pollfd, | |
3775 | data_conn); | |
3776 | } else { | |
3777 | ERR("Unknown poll events %u for data sock %d", | |
3778 | revents, pollfd); | |
b8aa1682 | 3779 | } |
03e43155 | 3780 | put_data_connection: |
7591bab1 | 3781 | connection_put(data_conn); |
b8aa1682 | 3782 | } |
beaad64c | 3783 | last_seen_data_fd = -1; |
b8aa1682 JD |
3784 | } |
3785 | ||
f385ae0a MD |
3786 | /* Normal exit, no error */ |
3787 | ret = 0; | |
3788 | ||
095a4ae5 | 3789 | exit: |
b8aa1682 | 3790 | error: |
71efa8ef | 3791 | /* Cleanup remaining connection object. */ |
9d1bbf21 | 3792 | rcu_read_lock(); |
90e7d72f JG |
3793 | cds_lfht_for_each_entry(relay_connections_ht->ht, &iter.iter, |
3794 | destroy_conn, | |
58eb9381 | 3795 | sock_n.node) { |
f385ae0a | 3796 | health_code_update(); |
98ba050e | 3797 | |
fd0f1e3e | 3798 | session_abort(destroy_conn->session); |
98ba050e | 3799 | |
7591bab1 MD |
3800 | /* |
3801 | * No need to grab another ref, because we own | |
3802 | * destroy_conn. | |
3803 | */ | |
3804 | relay_thread_close_connection(&events, destroy_conn->sock->fd, | |
3805 | destroy_conn); | |
b8aa1682 | 3806 | } |
94d49140 | 3807 | rcu_read_unlock(); |
7591bab1 MD |
3808 | |
3809 | lttng_poll_clean(&events); | |
7d2f7452 | 3810 | error_poll_create: |
b8aa1682 | 3811 | lttng_ht_destroy(relay_connections_ht); |
095a4ae5 | 3812 | relay_connections_ht_error: |
58eb9381 DG |
3813 | /* Close relay conn pipes */ |
3814 | utils_close_pipe(relay_conn_pipe); | |
095a4ae5 MD |
3815 | if (err) { |
3816 | DBG("Thread exited with error"); | |
3817 | } | |
b8aa1682 | 3818 | DBG("Worker thread cleanup complete"); |
9b5e0863 | 3819 | error_testpoint: |
f385ae0a MD |
3820 | if (err) { |
3821 | health_error(); | |
3822 | ERR("Health error occurred in %s", __func__); | |
3823 | } | |
3824 | health_unregister(health_relayd); | |
9d1bbf21 | 3825 | rcu_unregister_thread(); |
b4aacfdc | 3826 | lttng_relay_stop_threads(); |
b8aa1682 JD |
3827 | return NULL; |
3828 | } | |
3829 | ||
3830 | /* | |
3831 | * Create the relay command pipe to wake thread_manage_apps. | |
3832 | * Closed in cleanup(). | |
3833 | */ | |
58eb9381 | 3834 | static int create_relay_conn_pipe(void) |
b8aa1682 | 3835 | { |
a02de639 | 3836 | int ret; |
b8aa1682 | 3837 | |
58eb9381 | 3838 | ret = utils_create_pipe_cloexec(relay_conn_pipe); |
b8aa1682 | 3839 | |
b8aa1682 JD |
3840 | return ret; |
3841 | } | |
3842 | ||
3843 | /* | |
3844 | * main | |
3845 | */ | |
3846 | int main(int argc, char **argv) | |
3847 | { | |
178a0557 | 3848 | int ret = 0, retval = 0; |
b8aa1682 JD |
3849 | void *status; |
3850 | ||
2a10de3b JR |
3851 | /* Parse environment variables */ |
3852 | ret = parse_env_options(); | |
3853 | if (ret) { | |
3854 | retval = -1; | |
3855 | goto exit_options; | |
3856 | } | |
3857 | ||
3858 | /* | |
3859 | * Parse arguments. | |
3860 | * Command line arguments overwrite environment. | |
3861 | */ | |
b8aa1682 | 3862 | progname = argv[0]; |
178a0557 MD |
3863 | if (set_options(argc, argv)) { |
3864 | retval = -1; | |
3865 | goto exit_options; | |
b8aa1682 JD |
3866 | } |
3867 | ||
178a0557 MD |
3868 | if (set_signal_handler()) { |
3869 | retval = -1; | |
3870 | goto exit_options; | |
b8aa1682 JD |
3871 | } |
3872 | ||
a3bc3918 JR |
3873 | relayd_config_log(); |
3874 | ||
3875 | if (opt_print_version) { | |
3876 | print_version(); | |
3877 | retval = 0; | |
3878 | goto exit_options; | |
3879 | } | |
3880 | ||
c0407718 JG |
3881 | ret = fclose(stdin); |
3882 | if (ret) { | |
3883 | PERROR("Failed to close stdin"); | |
3884 | goto exit_options; | |
3885 | } | |
3886 | ||
35ab25e5 MD |
3887 | DBG("Clear command %s", opt_allow_clear ? "allowed" : "disallowed"); |
3888 | ||
4d513a50 DG |
3889 | /* Try to create directory if -o, --output is specified. */ |
3890 | if (opt_output_path) { | |
994fa64f DG |
3891 | if (*opt_output_path != '/') { |
3892 | ERR("Please specify an absolute path for -o, --output PATH"); | |
178a0557 MD |
3893 | retval = -1; |
3894 | goto exit_options; | |
994fa64f DG |
3895 | } |
3896 | ||
d77dded2 JG |
3897 | ret = utils_mkdir_recursive(opt_output_path, S_IRWXU | S_IRWXG, |
3898 | -1, -1); | |
4d513a50 DG |
3899 | if (ret < 0) { |
3900 | ERR("Unable to create %s", opt_output_path); | |
178a0557 MD |
3901 | retval = -1; |
3902 | goto exit_options; | |
4d513a50 DG |
3903 | } |
3904 | } | |
3905 | ||
b8aa1682 | 3906 | /* Daemonize */ |
b5218ffb | 3907 | if (opt_daemon || opt_background) { |
3fd27398 MD |
3908 | int i; |
3909 | ||
3910 | ret = lttng_daemonize(&child_ppid, &recv_child_signal, | |
3911 | !opt_background); | |
b8aa1682 | 3912 | if (ret < 0) { |
178a0557 MD |
3913 | retval = -1; |
3914 | goto exit_options; | |
b8aa1682 | 3915 | } |
3fd27398 MD |
3916 | |
3917 | /* | |
3918 | * We are in the child. Make sure all other file | |
3919 | * descriptors are closed, in case we are called with | |
3920 | * more opened file descriptors than the standard ones. | |
3921 | */ | |
3922 | for (i = 3; i < sysconf(_SC_OPEN_MAX); i++) { | |
3923 | (void) close(i); | |
3924 | } | |
3925 | } | |
3926 | ||
ce9ee1fb JR |
3927 | if (opt_working_directory) { |
3928 | ret = utils_change_working_directory(opt_working_directory); | |
3929 | if (ret) { | |
3930 | /* All errors are already logged. */ | |
3931 | goto exit_options; | |
3932 | } | |
3933 | } | |
3934 | ||
23c8ff50 JG |
3935 | sessiond_trace_chunk_registry = sessiond_trace_chunk_registry_create(); |
3936 | if (!sessiond_trace_chunk_registry) { | |
3937 | ERR("Failed to initialize session daemon trace chunk registry"); | |
3938 | retval = -1; | |
3939 | goto exit_sessiond_trace_chunk_registry; | |
3940 | } | |
3941 | ||
178a0557 MD |
3942 | /* Initialize thread health monitoring */ |
3943 | health_relayd = health_app_create(NR_HEALTH_RELAYD_TYPES); | |
3944 | if (!health_relayd) { | |
3945 | PERROR("health_app_create error"); | |
3946 | retval = -1; | |
3947 | goto exit_health_app_create; | |
3948 | } | |
3949 | ||
3fd27398 | 3950 | /* Create thread quit pipe */ |
178a0557 MD |
3951 | if (init_thread_quit_pipe()) { |
3952 | retval = -1; | |
3953 | goto exit_init_data; | |
b8aa1682 JD |
3954 | } |
3955 | ||
b8aa1682 | 3956 | /* Setup the thread apps communication pipe. */ |
178a0557 MD |
3957 | if (create_relay_conn_pipe()) { |
3958 | retval = -1; | |
3959 | goto exit_init_data; | |
b8aa1682 JD |
3960 | } |
3961 | ||
3962 | /* Init relay command queue. */ | |
8bdee6e2 | 3963 | cds_wfcq_init(&relay_conn_queue.head, &relay_conn_queue.tail); |
b8aa1682 | 3964 | |
554831e7 MD |
3965 | /* Initialize communication library */ |
3966 | lttcomm_init(); | |
87e45c13 | 3967 | lttcomm_inet_init(); |
554831e7 | 3968 | |
d3e2ba59 | 3969 | /* tables of sessions indexed by session ID */ |
7591bab1 MD |
3970 | sessions_ht = lttng_ht_new(0, LTTNG_HT_TYPE_U64); |
3971 | if (!sessions_ht) { | |
178a0557 MD |
3972 | retval = -1; |
3973 | goto exit_init_data; | |
d3e2ba59 JD |
3974 | } |
3975 | ||
3976 | /* tables of streams indexed by stream ID */ | |
2a174661 | 3977 | relay_streams_ht = lttng_ht_new(0, LTTNG_HT_TYPE_U64); |
d3e2ba59 | 3978 | if (!relay_streams_ht) { |
178a0557 MD |
3979 | retval = -1; |
3980 | goto exit_init_data; | |
d3e2ba59 JD |
3981 | } |
3982 | ||
3983 | /* tables of streams indexed by stream ID */ | |
92c6ca54 DG |
3984 | viewer_streams_ht = lttng_ht_new(0, LTTNG_HT_TYPE_U64); |
3985 | if (!viewer_streams_ht) { | |
178a0557 MD |
3986 | retval = -1; |
3987 | goto exit_init_data; | |
55706a7d MD |
3988 | } |
3989 | ||
65931c8b | 3990 | ret = utils_create_pipe(health_quit_pipe); |
178a0557 MD |
3991 | if (ret) { |
3992 | retval = -1; | |
3993 | goto exit_health_quit_pipe; | |
65931c8b MD |
3994 | } |
3995 | ||
3996 | /* Create thread to manage the client socket */ | |
1a1a34b4 | 3997 | ret = pthread_create(&health_thread, default_pthread_attr(), |
65931c8b | 3998 | thread_manage_health, (void *) NULL); |
178a0557 MD |
3999 | if (ret) { |
4000 | errno = ret; | |
65931c8b | 4001 | PERROR("pthread_create health"); |
178a0557 MD |
4002 | retval = -1; |
4003 | goto exit_health_thread; | |
65931c8b MD |
4004 | } |
4005 | ||
b8aa1682 | 4006 | /* Setup the dispatcher thread */ |
1a1a34b4 | 4007 | ret = pthread_create(&dispatcher_thread, default_pthread_attr(), |
b8aa1682 | 4008 | relay_thread_dispatcher, (void *) NULL); |
178a0557 MD |
4009 | if (ret) { |
4010 | errno = ret; | |
b8aa1682 | 4011 | PERROR("pthread_create dispatcher"); |
178a0557 MD |
4012 | retval = -1; |
4013 | goto exit_dispatcher_thread; | |
b8aa1682 JD |
4014 | } |
4015 | ||
4016 | /* Setup the worker thread */ | |
1a1a34b4 | 4017 | ret = pthread_create(&worker_thread, default_pthread_attr(), |
7591bab1 | 4018 | relay_thread_worker, NULL); |
178a0557 MD |
4019 | if (ret) { |
4020 | errno = ret; | |
b8aa1682 | 4021 | PERROR("pthread_create worker"); |
178a0557 MD |
4022 | retval = -1; |
4023 | goto exit_worker_thread; | |
b8aa1682 JD |
4024 | } |
4025 | ||
4026 | /* Setup the listener thread */ | |
1a1a34b4 | 4027 | ret = pthread_create(&listener_thread, default_pthread_attr(), |
b8aa1682 | 4028 | relay_thread_listener, (void *) NULL); |
178a0557 MD |
4029 | if (ret) { |
4030 | errno = ret; | |
b8aa1682 | 4031 | PERROR("pthread_create listener"); |
178a0557 MD |
4032 | retval = -1; |
4033 | goto exit_listener_thread; | |
b8aa1682 JD |
4034 | } |
4035 | ||
7591bab1 | 4036 | ret = relayd_live_create(live_uri); |
178a0557 | 4037 | if (ret) { |
d3e2ba59 | 4038 | ERR("Starting live viewer threads"); |
178a0557 | 4039 | retval = -1; |
50138f51 | 4040 | goto exit_live; |
d3e2ba59 JD |
4041 | } |
4042 | ||
178a0557 MD |
4043 | /* |
4044 | * This is where we start awaiting program completion (e.g. through | |
4045 | * signal that asks threads to teardown). | |
4046 | */ | |
4047 | ||
4048 | ret = relayd_live_join(); | |
4049 | if (ret) { | |
4050 | retval = -1; | |
4051 | } | |
50138f51 | 4052 | exit_live: |
178a0557 | 4053 | |
b8aa1682 | 4054 | ret = pthread_join(listener_thread, &status); |
178a0557 MD |
4055 | if (ret) { |
4056 | errno = ret; | |
4057 | PERROR("pthread_join listener_thread"); | |
4058 | retval = -1; | |
b8aa1682 JD |
4059 | } |
4060 | ||
178a0557 | 4061 | exit_listener_thread: |
b8aa1682 | 4062 | ret = pthread_join(worker_thread, &status); |
178a0557 MD |
4063 | if (ret) { |
4064 | errno = ret; | |
4065 | PERROR("pthread_join worker_thread"); | |
4066 | retval = -1; | |
b8aa1682 JD |
4067 | } |
4068 | ||
178a0557 | 4069 | exit_worker_thread: |
b8aa1682 | 4070 | ret = pthread_join(dispatcher_thread, &status); |
178a0557 MD |
4071 | if (ret) { |
4072 | errno = ret; | |
4073 | PERROR("pthread_join dispatcher_thread"); | |
4074 | retval = -1; | |
b8aa1682 | 4075 | } |
178a0557 | 4076 | exit_dispatcher_thread: |
42415026 | 4077 | |
65931c8b | 4078 | ret = pthread_join(health_thread, &status); |
178a0557 MD |
4079 | if (ret) { |
4080 | errno = ret; | |
4081 | PERROR("pthread_join health_thread"); | |
4082 | retval = -1; | |
65931c8b | 4083 | } |
178a0557 | 4084 | exit_health_thread: |
65931c8b | 4085 | |
65931c8b | 4086 | utils_close_pipe(health_quit_pipe); |
178a0557 | 4087 | exit_health_quit_pipe: |
65931c8b | 4088 | |
178a0557 | 4089 | exit_init_data: |
55706a7d | 4090 | health_app_destroy(health_relayd); |
23c8ff50 | 4091 | sessiond_trace_chunk_registry_destroy(sessiond_trace_chunk_registry); |
55706a7d | 4092 | exit_health_app_create: |
23c8ff50 | 4093 | exit_sessiond_trace_chunk_registry: |
178a0557 | 4094 | exit_options: |
4d62fbf8 MD |
4095 | /* |
4096 | * Wait for all pending call_rcu work to complete before tearing | |
4097 | * down data structures. call_rcu worker may be trying to | |
4098 | * perform lookups in those structures. | |
4099 | */ | |
4100 | rcu_barrier(); | |
7591bab1 MD |
4101 | relayd_cleanup(); |
4102 | ||
4103 | /* Ensure all prior call_rcu are done. */ | |
4104 | rcu_barrier(); | |
d3e2ba59 | 4105 | |
178a0557 | 4106 | if (!retval) { |
b8aa1682 | 4107 | exit(EXIT_SUCCESS); |
178a0557 MD |
4108 | } else { |
4109 | exit(EXIT_FAILURE); | |
b8aa1682 | 4110 | } |
b8aa1682 | 4111 | } |